subprojects: Prepare for release

The Vala README only mentions autotools instructions, and when Vala is
compiled that way the -frida suffix is not added to the version string,
and the frida-core check for Vala fails.

Therefore, clarify that Vala needs to be built from source with Meson.

.github/workflows/ci.yml

@@ -16,13 +16,13 @@ jobs:
     strategy:
       matrix:
         include:
-          - { id: windows-x86_64, runner: '"windows-latest"'                    }
-          - { id: windows-x86,    runner: '"windows-latest"'                    }
-          - { id: macos-x86_64,   runner: '"macos-latest"'                      }
-          - { id: macos-arm64,    runner: '"macos-latest"'                      }
-          - { id: linux-x86_64,   runner: '"ubuntu-latest"'                     }
-          - { id: linux-x86,      runner: '"ubuntu-latest"'                     }
-          - { id: freebsd-arm64,  runner: '["self-hosted", "freebsd", "arm64"]' }
+          - { id: windows-arm64,  runner: '"windows-11-arm"', sys: CLANGARM64, pkg: 'mingw-w64-clang-aarch64-clang' }
+          - { id: windows-x86_64, runner: '"windows-latest"', sys: MINGW64,    pkg: 'mingw-w64-x86_64-gcc'          }
+          - { id: windows-x86,    runner: '"windows-latest"', sys: MINGW32,    pkg: 'mingw-w64-i686-gcc'            }
+          - { id: macos-x86_64,   runner: '"macos-latest"'                                                          }
+          - { id: macos-arm64,    runner: '"macos-latest"'                                                          }
+          - { id: linux-x86_64,   runner: '"ubuntu-latest"'                                                         }
+          - { id: linux-x86,      runner: '"ubuntu-latest"'                                                         }
       fail-fast: false
     runs-on: ${{ fromJSON(matrix.runner) }}
     steps:
@@ -30,6 +30,18 @@ jobs:
         uses: actions/checkout@v4
         with:
           submodules: recursive
+      - name: Install MinGW toolchain for cgo support
+        if: ${{ startsWith(matrix.id, 'windows-') }}
+        id: msys2
+        uses: msys2/setup-msys2@v2
+        with:
+          msystem: ${{ matrix.sys }}
+          install: ${{ matrix.pkg }}
+      - name: Install Go toolchain
+        uses: actions/setup-go@v5
+        with:
+          go-version-file: 'src/compiler/go.mod'
+          cache-dependency-path: 'src/compiler/go.mod'
       - name: Set up Apple certificates
         if: ${{ startsWith(matrix.id, 'macos-') }}
         uses: ./.github/actions/setup-apple-certificates
@@ -48,18 +60,29 @@ jobs:
       - name: Build
         if: ${{ startsWith(matrix.id, 'windows-') }}
         run: |
-          .\configure ${{ env.FRIDA_CORE_OPTIONS }}
+          .\configure `
+              --host=${{ matrix.id }} `
+              --enable-compiler-backend `
+              ${{ env.FRIDA_CORE_OPTIONS }}
           .\make
+        env:
+          MSYS2_LOCATION: ${{ steps.msys2.outputs.msys2-location }}
       - name: Build
         if: ${{ !startsWith(matrix.id, 'windows-') && matrix.id != 'linux-x86' }}
         run: |
-          ./configure ${{ env.FRIDA_CORE_OPTIONS }}
+          ./configure \
+              --enable-compiler-backend \
+              ${{ env.FRIDA_CORE_OPTIONS }}
           make
       - name: Build
         if: matrix.id == 'linux-x86'
         run: |
           CC="gcc -m32" CXX="g++ -m32" STRIP="strip" \
-              ./configure --build=linux-x86 --host=linux-x86 ${{ env.FRIDA_CORE_OPTIONS }}
+              ./configure \
+                --build=linux-x86 \
+                --host=linux-x86 \
+                --enable-compiler-backend \
+                ${{ env.FRIDA_CORE_OPTIONS }}
           make
       - name: Upload devkit
         if: ${{ !startsWith(matrix.id, 'linux-') }}
@@ -68,6 +91,7 @@ jobs:
           name: core-devkit-${{ matrix.id }}
           path: build/src/devkit/
       - name: Test
+        if: ${{ matrix.id != 'windows-arm64' && !startsWith(matrix.id, 'macos-') }}
         run: make test
 
   cross:
@@ -91,9 +115,17 @@ jobs:
         run: |
           sudo apt-get update
           sudo apt-get install ${{ matrix.pkg }}
+      - name: Install Go toolchain
+        uses: actions/setup-go@v5
+        with:
+          go-version-file: 'src/compiler/go.mod'
+          cache-dependency-path: 'src/compiler/go.mod'
       - name: Build
         run: |
-          ./configure ${{ matrix.opts }} ${{ env.FRIDA_CORE_OPTIONS }}
+          ./configure \
+              ${{ matrix.opts }} \
+              ${{ !contains(matrix.id, 'mips') && '--enable-compiler-backend' || '' }} \
+              ${{ env.FRIDA_CORE_OPTIONS }}
           make
       - name: Upload devkit
         if: ${{ !startsWith(matrix.id, 'linux-') }}
@@ -114,9 +146,17 @@ jobs:
         uses: actions/checkout@v4
         with:
           submodules: recursive
+      - name: Install Go toolchain
+        uses: actions/setup-go@v5
+        with:
+          go-version-file: 'src/compiler/go.mod'
+          cache-dependency-path: 'src/compiler/go.mod'
       - name: Build
         run: |
-          ./configure --host=$XTOOLS_HOST ${{ env.FRIDA_CORE_OPTIONS }}
+          ./configure \
+              --host=$XTOOLS_HOST \
+              ${{ !startsWith(matrix.arch, 'mips') && '--enable-compiler-backend' || '' }} \
+              ${{ env.FRIDA_CORE_OPTIONS }}
           make
       - name: Upload devkit
         uses: actions/upload-artifact@v4
@@ -127,6 +167,131 @@ jobs:
         if: matrix.arch == 'x86' || matrix.arch == 'x86_64'
         run: make test
 
+  emulator:
+    strategy:
+      matrix:
+        arch: [armbe8, arm64be]
+      fail-fast: false
+    runs-on: ubuntu-latest
+    container: ghcr.io/frida/x-tools-linux-${{ matrix.arch }}:latest
+    steps:
+      - name: Check out repo
+        uses: actions/checkout@v4
+        with:
+          submodules: recursive
+      - name: Build
+        run: |
+          ./configure --host=$XTOOLS_HOST --without-prebuilds=sdk:host --enable-tests
+          make
+      - name: Run custom container
+        uses: addnab/docker-run-action@v3
+        with:
+          image: docker:stable
+          options: -v ${{ github.workspace }}:/workspace:delegated
+          run: |
+            cat <<EOF > /workspace/initscript
+            #!/bin/sh
+            dmesg -n1
+            mount -t proc none /proc
+            mount -t sysfs none /sys
+            mount -t tmpfs none /tmp
+            mount -t devtmpfs none /dev
+            mount -t 9p -o rw,sync,dirsync,relatime,trans=virtio,msize=131072,version=9p2000.L host0 /workspace
+            ip link set lo up
+            ip addr add 192.168.76.20/24 dev eth0
+            ip link set eth0 up
+            ip route add default via 192.168.76.2 dev eth0
+            export LD_LIBRARY_PATH=/lib:/lib64:/libilp32
+            /sbin/entropy
+            cat /etc/motd
+            export PS1='\u@frida:\w\$ '
+            /root/frida-tests
+            status=\$?
+            echo "exit status: \$status"
+            if [ \$status -eq 0 ]; then
+              echo EXIT_OK
+            elif [ \$status -gt 128 ]; then
+              signal=\$((\$status - 128))
+              echo "EXIT_FAIL (terminated by signal \$signal)"
+            else
+              echo "EXIT_FAIL (exit code \$status)"
+            fi
+            EOF
+
+            cat <<EOF > /workspace/launch.sh
+            #!/bin/sh
+            LOGFILE=/workspace/qemu.log
+            : > "\$LOGFILE"
+            timeout 120 qemu-system-aarch64 \
+                -M virt \
+                -machine virtualization=true \
+                -machine type=virt \
+                -cpu cortex-a72 \
+                -smp 4 \
+                -kernel /root/Image.gz \
+                -initrd /root/initramfs.img \
+                -append 'earlyprintk=serial,ttyAMA0 console=ttyAMA0 coredump_filter=0x3f' \
+                -m 4096M \
+                -net nic,id=eth \
+                -net user,id=mynet,net=192.168.76.0/24 \
+                -virtfs local,path=/workspace/,mount_tag=host0,security_model=passthrough,id=host0 \
+                -nographic \
+                -no-reboot \
+                >> "\$LOGFILE" 2>&1 &
+            QEMU_PID=\$!
+            echo "QEMU started with PID \$QEMU_PID"
+            tail -n 0 -f "\$LOGFILE" | while read line; do
+              echo "\$line"
+              echo "\$line" | grep "EXIT_OK" >/dev/null 2>&1
+              if [ \$? -eq 0 ]; then
+                echo "Success signal received from guest. Killing QEMU..."
+                kill -9 "\$QEMU_PID"
+                cat -n "\$LOGFILE"
+                exit 0
+              fi
+              echo "\$line" | grep "EXIT_FAIL" >/dev/null 2>&1
+              if [ \$? -eq 0 ]; then
+                echo "Failure signal received from guest. Killing QEMU..."
+                kill -9 "\$QEMU_PID"
+                cat -n "\$LOGFILE"
+                exit 1
+              fi
+              if ! kill -0 "\$QEMU_PID" 2>/dev/null; then
+                echo "QEMU process has exited."
+                cat -n "\$LOGFILE"
+                exit 1
+              fi
+            done
+            EOF
+
+            cat <<EOF > /workspace/Dockerfile.ci
+            FROM ghcr.io/frida/x-tools-linux-be-target:latest
+
+            ENV DEBIAN_FRONTEND=noninteractive
+            RUN apt-get update && \
+                apt-get install -y \
+                cpio
+
+            RUN mkdir /tmp/initramfs
+            WORKDIR /tmp/initramfs
+            RUN cpio --extract < /root/initramfs.img
+
+            RUN mkdir /tmp/initramfs/workspace
+
+            COPY initscript /tmp/initramfs/init
+            RUN chmod +x /tmp/initramfs/init
+
+            COPY build/tests /tmp/initramfs/root/
+            RUN find . | cpio -o --format=newc -R root:root > /root/initramfs.img
+
+            COPY launch.sh /root/launch.sh
+            RUN chmod +x /root/launch.sh
+            ENTRYPOINT ["/root/launch.sh"]
+            EOF
+
+            docker build -t ci-image -f /workspace/Dockerfile.ci /workspace
+            docker run --rm -v /workspace:/workspace ci-image
+
   mobile:
     strategy:
       matrix:
@@ -143,6 +308,11 @@ jobs:
         uses: actions/checkout@v4
         with:
           submodules: recursive
+      - name: Install Go toolchain
+        uses: actions/setup-go@v5
+        with:
+          go-version-file: 'src/compiler/go.mod'
+          cache-dependency-path: 'src/compiler/go.mod'
       - name: Set up Apple certificates
         if: startsWith(matrix.id, 'ios-')
         uses: ./.github/actions/setup-apple-certificates
@@ -160,7 +330,10 @@ jobs:
         run: echo ANDROID_NDK_ROOT=${{ steps.setup-ndk.outputs.ndk-path }} >> $GITHUB_ENV
       - name: Build
         run: |
-          ./configure --host=${{ matrix.id }} ${{ env.FRIDA_CORE_OPTIONS }}
+          ./configure \
+              --host=${{ matrix.id }} \
+              --enable-compiler-backend \
+              ${{ env.FRIDA_CORE_OPTIONS }}
           make
       - name: Upload devkit
         uses: actions/upload-artifact@v4
@@ -250,6 +423,7 @@ jobs:
     strategy:
       matrix:
         arch: [x86, x86_64, arm, armbe8, arm64, arm64be, arm64beilp32, mips, mipsel, mips64, mips64el]
+      fail-fast: false
     runs-on: ubuntu-latest
     container: ghcr.io/frida/core-linux-helpers-${{ matrix.arch }}:latest
     steps:
@@ -263,7 +437,40 @@ jobs:
       - name: Check for unexpected changes
         run: |
           git config --global --add safe.directory "$(realpath .)"
-          status_output="$(git status --porcelain)"
+          status_output=$(git status --porcelain tests/labrats/{resident-agent,simple-agent}-linux-${{ matrix.arch }}.so tests/labrats/{forker,sleeper,spawner}-linux-${{ matrix.arch }})
+          if [ -n "$status_output" ]; then
+            echo "Unexpected changes detected:"
+            echo "$status_output"
+            echo "Diff:"
+            git diff
+            exit 1
+          else
+            echo "No unexpected changes detected."
+          fi
+
+  # This job is used to check that the Linux labrats are built correctly for all
+  # supported architectures. We do this because the binary artifacts are checked
+  # in, and we want to ensure that they are up-to-date with respect to the source
+  # for all architectures.
+  check-labrats:
+    strategy:
+      matrix:
+        arch: [x86, x86_64, arm, armbe8, arm64, arm64be, arm64beilp32, mips, mipsel, mips64, mips64el]
+      fail-fast: false
+    runs-on: ubuntu-latest
+    container: ghcr.io/frida/core-linux-helpers-${{ matrix.arch }}:latest
+    steps:
+      - name: Check out repo
+        uses: actions/checkout@v4
+        with:
+          submodules: recursive
+      - name: Build
+        run: |
+          ./tests/labrats/rebuild.sh ${{ matrix.arch }}
+      - name: Check for unexpected changes
+        run: |
+          git config --global --add safe.directory "$(realpath .)"
+          status_output=$(git status --porcelain src/linux/helpers/{bootstrapper,loader}-${{ matrix.arch }}.bin)
           if [ -n "$status_output" ]; then
             echo "Unexpected changes detected:"
             echo "$status_output"

.gitignore

@@ -3,9 +3,16 @@
 /src/barebone/helpers/memory-scanner/target/
 /src/barebone/helpers/target/
 /src/barebone/node_modules/
+/src/barebone/script-runtime.js
 /src/compiler/node_modules/
+/src/darwin/agent/osanalytics/node_modules/
+/src/darwin/agent/osanalytics/osanalytics.js
+/src/darwin/agent/reportcrash/node_modules/
+/src/darwin/agent/reportcrash/reportcrash.js
 /src/droidy/helper/build/
 /src/fruity/helpers/build/
+/src/linux/agent/system-server/node_modules/
+/src/linux/agent/system-server/system-server.js
 /src/linux/helpers/build/
 /src/linux/helpers/ext/
 /subprojects/*

compat/build.py

@@ -435,6 +435,7 @@ def compile(privdir: Path, state: State):
                       environ={**build_env, **group.extra_environ},
                       allowed_prebuilds=state.allowed_prebuilds,
                       extra_meson_options=[
+                          "-Dcompiler_backend=disabled",
                           "-Dhelper_modern=",
                           "-Dhelper_legacy=",
                           "-Dagent_modern=",
@@ -499,6 +500,8 @@ def option_should_be_forwarded(k: "OptionKey",
 
     if k.is_project():
         if is_for_us:
+            if k.name == "compiler_backend":
+                return False
             tokens = k.name.split("_")
             if tokens[0] in {"helper", "agent"} and tokens[-1] in {"modern", "legacy"}:
                 return False

inject/inject.vala

@@ -147,7 +147,7 @@ namespace Frida.Inject {
 		public extern void init ();
 	}
 
-	public class Application : Object {
+	public sealed class Application : Object {
 		public string? device_id {
 			get;
 			construct;
@@ -426,7 +426,7 @@ namespace Frida.Inject {
 #endif
 	}
 
-	private class ScriptRunner : Object, RpcPeer {
+	private sealed class ScriptRunner : Object, RpcPeer {
 		public TerminalMode terminal_mode {
 			get;
 			private set;

lib/agent/agent.vala

@@ -11,7 +11,7 @@ namespace Frida.Agent {
 		PROCESS_TRANSITION
 	}
 
-	private class Runner : Object, ProcessInvader, AgentSessionProvider, ExitHandler, ForkHandler, SpawnHandler {
+	private sealed class Runner : Object, ProcessInvader, AgentSessionProvider, ExitHandler, ForkHandler, SpawnHandler {
 		public static Runner shared_instance = null;
 		public static Mutex shared_mutex;
 		private static string? cached_agent_path = null;
@@ -1400,12 +1400,12 @@ namespace Frida.Agent {
 				if (nb_api.unload_library == null)
 					parameters.append ("|eternal|sticky");
 				/*
-				 * Disable ExitMonitor to work around a bug in Android's libndk_translation.so on Android 11.
-				 * We need to avoid modifying libc.so ranges that the translator potentially depends on, to
-				 * avoid blowing up when Interceptor's CPU cache flush results in the translated code being
-				 * discarded, which seems like an edge-case the translator doesn't handle.
+				 * Disable Exceptor and ExitMonitor to work around a bug in Android's libndk_translation.so
+				 * on Android 11. We need to avoid modifying libc.so ranges that the translator potentially
+				 * depends on, to avoid blowing up when Interceptor's CPU cache flush results in the translated
+				 * code being discarded, which seems like an edge-case the translator doesn't handle.
 				 */
-				parameters.append ("|exit-monitor:off");
+				parameters.append ("|exceptor:off|exit-monitor:off");
 
 				emulated_bridge_state = new BridgeState (parameters.str);
 
@@ -1621,7 +1621,7 @@ namespace Frida.Agent {
 	}
 #endif
 
-	private class LiveAgentSession : BaseAgentSession {
+	private sealed class LiveAgentSession : BaseAgentSession {
 		public uint registration_id {
 			get;
 			set;

lib/base/buffer.vala

@@ -1,5 +1,5 @@
 namespace Frida {
-	public class BufferBuilder : Object {
+	public sealed class BufferBuilder : Object {
 		public ByteOrder byte_order {
 			get;
 			construct;
@@ -307,7 +307,7 @@ namespace Frida {
 		NUL
 	}
 
-	public class Buffer : Object {
+	public sealed class Buffer : Object {
 		public Bytes bytes {
 			get;
 			construct;
@@ -446,7 +446,14 @@ namespace Frida {
 
 		public string read_fixed_string (size_t offset, size_t size) throws Error {
 			string * start = (string *) get_pointer (offset, size);
-			string val = start->substring (0, (long) size);
+			size_t max_length = size_t.min (size, this.size - offset);
+			string * end = memchr (start, 0, max_length);
+			size_t n;
+			if (end != null)
+				n = end - start;
+			else
+				n = size;
+			string val = start->substring (0, (long) n);
 			if (!val.validate ())
 				throw new Error.PROTOCOL ("Invalid UTF-8 string");
 			return val;
@@ -466,7 +473,7 @@ namespace Frida {
 		}
 	}
 
-	public class BufferReader {
+	public sealed class BufferReader {
 		public size_t available {
 			get {
 				return buffer.bytes.get_size () - offset;
@@ -579,6 +586,12 @@ namespace Frida {
 			return val;
 		}
 
+		public unowned BufferReader skip (size_t n) throws Error {
+			check_available (n);
+			offset += n;
+			return this;
+		}
+
 		private void check_available (size_t n) throws Error {
 			if (available < n)
 				throw new Error.PROTOCOL ("Malformed buffer: truncated");

lib/base/channel.vala

@@ -0,0 +1,243 @@
+namespace Frida {
+	public sealed class ChannelRegistry : Object {
+		public signal void channel_closed (ChannelId id);
+
+		private Gee.Map<ChannelId?, weak IOStream> channels =
+			new Gee.HashMap<ChannelId?, weak IOStream> (ChannelId.hash, ChannelId.equal);
+
+		~ChannelRegistry () {
+			clear ();
+		}
+
+		public void clear () {
+			foreach (IOStream stream in channels.values.to_array ()) {
+				var channel_stream = stream as ChannelStream;
+				if (channel_stream != null)
+					channel_stream.abandon ();
+			}
+			channels.clear ();
+		}
+
+		public void register (ChannelId id, IOStream stream) {
+			stream.set_data ("channel-registry-entry", new Entry (this, id));
+			lock (channels)
+				channels[id] = stream;
+		}
+
+		public IOStream link (ChannelId id) throws Error {
+			IOStream? stream;
+			lock (channels)
+				stream = channels[id];
+			if (stream == null)
+				throw new Error.INVALID_ARGUMENT ("Invalid channel ID");
+			return stream;
+		}
+
+		public void unlink (ChannelId id) {
+			lock (channels) {
+				if (!channels.unset (id))
+					return;
+			}
+
+			channel_closed (id);
+		}
+
+		private class Entry {
+			public ChannelRegistry parent;
+			public ChannelId id;
+
+			public Entry (ChannelRegistry parent, ChannelId id) {
+				this.parent = parent;
+				this.id = id;
+			}
+
+			~Entry () {
+				parent.unlink (id);
+			}
+		}
+	}
+
+	public sealed class ChannelEndpoint : Object, Channel {
+		private IOStream? stream;
+
+		private ByteArray write_queue = new ByteArray ();
+		private bool writing = false;
+
+		private Cancellable io_cancellable = new Cancellable ();
+
+		public ChannelEndpoint (IOStream stream) {
+			this.stream = stream;
+
+			read_loop.begin ();
+		}
+
+		public async void close (Cancellable? cancellable) throws Error, IOError {
+			io_cancellable.cancel ();
+		}
+
+		public async void input (uint8[] data, Cancellable? cancellable) throws Error, IOError {
+			if (io_cancellable.is_cancelled ())
+				throw new Error.INVALID_OPERATION ("Channel is closed");
+
+			write_queue.append (data);
+
+			if (!writing) {
+				writing = true;
+
+				var source = new IdleSource ();
+				source.set_callback (() => {
+					process_write_queue.begin ();
+					return false;
+				});
+				source.attach (MainContext.get_thread_default ());
+			}
+		}
+
+		private async void read_loop () {
+			var input = stream.get_input_stream ();
+			var buffer = new uint8[64 * 1024];
+
+			while (true) {
+				ssize_t n;
+				try {
+					n = yield input.read_async (buffer, Priority.DEFAULT, io_cancellable);
+				} catch (GLib.Error e) {
+					break;
+				}
+
+				output (buffer[:n]);
+
+				if (n == 0)
+					break;
+			}
+
+			stream.close_async.begin ();
+			stream = null;
+		}
+
+		private async void process_write_queue () {
+			if (stream != null) {
+				var output = stream.get_output_stream ();
+
+				while (write_queue.len > 0) {
+					uint8[] batch = write_queue.steal ();
+
+					size_t bytes_written;
+					try {
+						yield output.write_all_async (batch, Priority.DEFAULT, io_cancellable, out bytes_written);
+					} catch (GLib.Error e) {
+						break;
+					}
+				}
+			}
+
+			writing = false;
+		}
+	}
+
+	public sealed class ChannelStream : VirtualStream {
+		public Channel channel {
+			get;
+			construct;
+		}
+
+		private ByteArray recv_queue = new ByteArray ();
+		private ByteArray send_queue = new ByteArray ();
+
+		public ChannelStream (Channel channel) {
+			Object (channel: channel);
+		}
+
+		construct {
+			channel.output.connect (on_output);
+		}
+
+		public void abandon () {
+			with_state_lock (() => {
+				state = CLOSED;
+				update_pending_io ();
+			});
+		}
+
+		protected override IOCondition query_events () {
+			IOCondition new_events = 0;
+
+			if (recv_queue.len != 0 || state == CLOSED)
+				new_events |= IN;
+
+			if (state == OPEN)
+				new_events |= OUT;
+
+			return new_events;
+		}
+
+		protected override void handle_close () {
+			channel.close.begin (null);
+		}
+
+		public override ssize_t read (uint8[] buffer) throws IOError {
+			ssize_t n = 0;
+			with_state_lock (() => {
+				n = ssize_t.min (recv_queue.len, buffer.length);
+				if (n > 0) {
+					Memory.copy (buffer, recv_queue.data, n);
+					recv_queue.remove_range (0, (uint) n);
+
+					update_pending_io ();
+				} else {
+					if (state == OPEN)
+						n = -1;
+				}
+			});
+
+			if (n == -1)
+				throw new IOError.WOULD_BLOCK ("Resource temporarily unavailable");
+
+			return n;
+		}
+
+		public override ssize_t write (uint8[] buffer) throws IOError {
+			with_state_lock (() => {
+				send_queue.append (buffer);
+			});
+
+			if (main_context.is_owner ()) {
+				process_send_queue ();
+			} else {
+				var source = new IdleSource ();
+				source.set_callback (() => {
+					process_send_queue ();
+					return Source.REMOVE;
+				});
+				source.attach (main_context);
+			}
+
+			return buffer.length;
+		}
+
+		private void process_send_queue () {
+			uint8[]? chunk = null;
+			with_state_lock (() => {
+				size_t n = send_queue.len;
+				if (n == 0)
+					return;
+				chunk = send_queue.data[0:n];
+				send_queue.remove_range (0, (uint) n);
+			});
+			if (chunk == null)
+				return;
+
+			channel.input.begin (chunk, io_cancellable);
+		}
+
+		private void on_output (uint8[] data) {
+			with_state_lock (() => {
+				if (data.length != 0)
+					recv_queue.append (data);
+				else
+					state = CLOSED;
+				update_pending_io ();
+			});
+		}
+	}
+}

lib/base/corefoundation.vala

@@ -1,5 +1,5 @@
 namespace Frida {
-	public class CFArray<T> {
+	public sealed class CFArray<T> {
 		private CoreFoundation.Array handle;
 
 		public static CFArray<T> wrap<T> (void * handle) {

lib/base/dbus.vala

@@ -60,7 +60,7 @@ namespace Frida {
 		return yield connection.get_proxy (null, ObjectPath.HOST_SESSION, DBusProxyFlags.NONE, cancellable);
 	}
 
-	private class DummyInputStream : InputStream {
+	private sealed class DummyInputStream : InputStream {
 		private bool done = false;
 		private Mutex mutex;
 		private Cond cond;

lib/base/fs.vala

@@ -0,0 +1,114 @@
+namespace Frida.FS {
+	public void mkdirp (File dir, Cancellable? cancellable = null) throws Error {
+		try {
+			dir.make_directory_with_parents (cancellable);
+		} catch (GLib.Error e) {
+			if (!(e is IOError.EXISTS))
+				throw new Error.PERMISSION_DENIED ("%s", e.message);
+		}
+	}
+
+	public void rmtree (File dir, Cancellable? cancellable = null) throws Error {
+		rmtree_worker (dir, 0, cancellable);
+	}
+
+	private void rmtree_worker (File dir, uint depth, Cancellable? cancellable = null) throws Error {
+		FileEnumerator enumerator;
+		try {
+			enumerator = dir.enumerate_children (FileAttribute.STANDARD_NAME, NOFOLLOW_SYMLINKS, cancellable);
+		} catch (GLib.Error e) {
+			if (depth == 0 && e is IOError.NOT_FOUND)
+				return;
+			throw new Error.PERMISSION_DENIED ("%s", e.message);
+		}
+
+		try {
+			FileInfo? info;
+			File? child;
+			while (enumerator.iterate (out info, out child, cancellable) && info != null) {
+				if (info == null)
+					continue;
+				if (info.get_file_type () == DIRECTORY)
+					rmtree (child, cancellable);
+				else
+					child.delete (cancellable);
+			}
+
+			dir.delete (cancellable);
+		} catch (GLib.Error e) {
+			if (!(e is IOError.EXISTS))
+				throw new Error.PERMISSION_DENIED ("%s", e.message);
+		}
+	}
+
+	public async void rmtree_async (File dir, Cancellable? cancellable = null) throws Error, IOError {
+		yield rmtree_async_worker (dir, 0, cancellable);
+	}
+
+	private async void rmtree_async_worker (File dir, uint depth, Cancellable? cancellable = null) throws Error, IOError {
+		int io_priority = Priority.DEFAULT;
+
+		FileEnumerator enumerator;
+		try {
+			enumerator = yield dir.enumerate_children_async (FileAttribute.STANDARD_NAME, NOFOLLOW_SYMLINKS, io_priority,
+				cancellable);
+		} catch (GLib.Error e) {
+			if (depth == 0 && e is IOError.NOT_FOUND)
+				return;
+			throw new Error.PERMISSION_DENIED ("%s", e.message);
+		}
+
+		try {
+			while (true) {
+				var batch = yield enumerator.next_files_async (1000, io_priority, cancellable);
+				if (batch.is_empty ())
+					break;
+				foreach (FileInfo info in batch) {
+					File child = dir.get_child (info.get_name ());
+					if (info.get_file_type () == DIRECTORY)
+						yield rmtree_async_worker (child, depth + 1, cancellable);
+					else
+						yield child.delete_async (io_priority, cancellable);
+				}
+			}
+
+			yield dir.delete_async (io_priority, cancellable);
+		} catch (GLib.Error e) {
+			throw new Error.PERMISSION_DENIED ("%s", e.message);
+		}
+	}
+
+	public async string read_all_text (File f, Cancellable? cancellable) throws Error, IOError {
+		Bytes b = yield read_all_bytes (f, cancellable);
+		string text = (string) b.get_data ();
+		if (!text.validate ())
+			throw new Error.PROTOCOL ("Unable to read '%s': invalid UTF-8", f.get_parse_name ());
+		return text;
+	}
+
+	public async void write_all_text (File f, string t, Cancellable? cancellable) throws Error, IOError {
+		yield write_all_bytes (f, new Bytes (t.data), cancellable);
+	}
+
+	public async Bytes read_all_bytes (File f, Cancellable? cancellable) throws Error, IOError {
+		try {
+			return yield f.load_bytes_async (cancellable, null);
+		} catch (GLib.Error e) {
+			if (e is IOError.CANCELLED)
+				throw (IOError) e;
+			if (e is IOError.NOT_FOUND)
+				throw new Error.INVALID_ARGUMENT ("%s", e.message);
+			throw new Error.PERMISSION_DENIED ("%s", e.message);
+		}
+	}
+
+	public async void write_all_bytes (File f, Bytes b, Cancellable? cancellable) throws Error, IOError {
+		try {
+			yield f.replace_contents_bytes_async (b, null, false, FileCreateFlags.NONE, cancellable, null);
+		} catch (GLib.Error e) {
+			if (e is IOError.CANCELLED)
+				throw (IOError) e;
+			throw new Error.PERMISSION_DENIED ("%s", e.message);
+		}
+	}
+}

lib/base/linux-syscall.h

@@ -1,5 +1,5 @@
-#ifndef __FRIDA_SYSCALL_H__
-#define __FRIDA_SYSCALL_H__
+#ifndef __FRIDA_LINUX_SYSCALL_H__
+#define __FRIDA_LINUX_SYSCALL_H__
 
 #include <linux/unistd.h>
 #include <sys/syscall.h>

lib/base/linux-system.vapi

@@ -14,7 +14,7 @@ namespace Frida {
 	[CCode (cheader_filename = "sys/mman.h", cname = "MAP_ANONYMOUS")]
 	public const int MAP_ANONYMOUS;
 
-	[CCode (cheader_filename = "linux/frida-syscall.h", cprefix = "SYS_", has_type_id = false)]
+	[CCode (cheader_filename = "linux-syscall.h", cprefix = "SYS_", has_type_id = false)]
 	public enum SysCall {
 		memfd_create,
 		pidfd_getfd,

lib/base/linux.vala

@@ -0,0 +1,107 @@
+namespace Frida {
+	private uint linux_major = 0;
+	private uint linux_minor = 0;
+
+	public bool check_kernel_version (uint major, uint minor) {
+		if (linux_major == 0) {
+			var name = Posix.utsname ();
+			name.release.scanf ("%u.%u", out linux_major, out linux_minor);
+		}
+
+		return (linux_major == major && linux_minor >= minor) || linux_major > major;
+	}
+
+	public class FileDescriptor : Object, FileDescriptorBased {
+		public int handle;
+
+		public FileDescriptor (int handle) {
+			this.handle = handle;
+		}
+
+		~FileDescriptor () {
+			if (handle != -1)
+				Posix.close (handle);
+		}
+
+		public int steal () {
+			int result = handle;
+			handle = -1;
+			return result;
+		}
+
+		public int get_fd () {
+			return handle;
+		}
+	}
+
+	public sealed class PidFileDescriptor : FileDescriptor {
+		private uint pid;
+
+		private PidFileDescriptor (int fd, uint pid) {
+			base (fd);
+			this.pid = pid;
+		}
+
+		public static bool is_supported () {
+			return check_kernel_version (5, 3);
+		}
+
+		public static bool getfd_is_supported () {
+			return check_kernel_version (5, 6);
+		}
+
+		public static PidFileDescriptor from_pid (uint pid) throws Error {
+			int fd = pidfd_open (pid, 0);
+			if (fd == -1)
+				throw_pidfd_error (pid, errno);
+			return new PidFileDescriptor (fd, pid);
+		}
+
+		public FileDescriptor getfd (int targetfd) throws Error {
+			int fd = pidfd_getfd (handle, targetfd, 0);
+			if (fd == -1)
+				throw_pidfd_error (pid, errno);
+			return new FileDescriptor (fd);
+		}
+
+		private static int pidfd_open (uint pid, uint flags) {
+			return Linux.syscall (SysCall.pidfd_open, pid, flags);
+		}
+
+		private static int pidfd_getfd (int pidfd, int targetfd, uint flags) {
+			return Linux.syscall (SysCall.pidfd_getfd, pidfd, targetfd, flags);
+		}
+
+		[NoReturn]
+		private static void throw_pidfd_error (uint pid, int err) throws Error {
+			switch (err) {
+				case Posix.ESRCH:
+					throw new Error.PROCESS_NOT_FOUND ("Process not found");
+				case Posix.EPERM:
+					throw new Error.PERMISSION_DENIED ("Unable to use pidfd for pid %u: %s", pid, strerror (err));
+				default:
+					throw new Error.NOT_SUPPORTED ("Unable to use pidfd for pid %u: %s", pid, strerror (err));
+			}
+		}
+	}
+
+	namespace MemoryFileDescriptor {
+		public bool is_supported () {
+			return check_kernel_version (3, 17);
+		}
+
+		public static FileDescriptor from_bytes (string name, Bytes bytes) {
+			assert (is_supported ());
+
+			var fd = new FileDescriptor (memfd_create (name, 0));
+			unowned uint8[] data = bytes.get_data ();
+			ssize_t n = Posix.write (fd.handle, data, data.length);
+			assert (n == data.length);
+			return fd;
+		}
+
+		private int memfd_create (string name, uint flags) {
+			return Linux.syscall (SysCall.memfd_create, name, flags);
+		}
+	}
+}

lib/base/meson.build

@@ -1,11 +1,15 @@
 base_sources = [
   'session.vala',
   'session-glue.c',
+  'channel.vala',
+  'service.vala',
+  'stream.vala',
   'rpc.vala',
   'p2p.vala',
   'p2p-glue.c',
   'dbus.vala',
   'promise.vala',
+  'fs.vala',
   'socket.vala',
   'socket-glue.c',
   'buffer.vala',
@@ -25,6 +29,15 @@ if host_os_family == 'darwin'
   base_sources += 'corefoundation.vala'
 endif
 
+if host_os_family == 'linux'
+  base_sources += 'linux.vala'
+  extra_vala_args += [
+    '--pkg=linux',
+    '--pkg=linux-system',
+    '--pkg=posix',
+  ]
+endif
+
 extra_deps = []
 if host_os_family != 'windows'
   extra_vala_args += '--pkg=gio-unix-2.0'
@@ -42,6 +55,12 @@ if host_os_family == 'darwin'
     '--pkg=darwin-xpc',
   ]
 endif
+if host_os_family == 'linux'
+  base_vala_args += [
+    '--vapidir=' + meson.current_source_dir(),
+    '--pkg=gio-unix-2.0',
+  ]
+endif
 
 base_gir_name = f'FridaBase-@[email protected]'
 
@@ -59,7 +78,7 @@ base = static_library('frida-base-' + api_version, base_sources,
 base_dep = declare_dependency(
   include_directories: include_directories('.'),
   link_with: base,
-  dependencies: [nice_dep, json_glib_dep, gum_dep],
+  dependencies: [nice_dep, json_glib_dep, gum_dep] + extra_deps,
 )
 
 base_build_dir = meson.current_build_dir()

lib/base/p2p.vala

@@ -169,7 +169,7 @@ namespace Frida {
 		}
 	}
 
-	public class PeerSocket : Object, DatagramBased {
+	public sealed class PeerSocket : Object, DatagramBased {
 		public Nice.Agent agent {
 			get;
 			construct;
@@ -452,6 +452,8 @@ namespace Frida {
 				if ((_pending_io & c) != 0)
 					source.set_ready_time (0);
 			}
+
+			notify_property ("pending-io");
 		}
 
 		private void prepare_for_io (int64 timeout, Cancellable? cancellable, out int64 deadline) throws IOError {
@@ -563,7 +565,7 @@ namespace Frida {
 		}
 	}
 
-	public class SctpConnection : IOStream {
+	public sealed class SctpConnection : VirtualStream {
 		public DatagramBased transport_socket {
 			get;
 			construct;
@@ -584,55 +586,14 @@ namespace Frida {
 			construct;
 		}
 
-		public State state {
-			get {
-				return _state;
-			}
-		}
-
-		public override InputStream input_stream {
-			get {
-				return _input_stream;
-			}
-		}
-
-		public override OutputStream output_stream {
-			get {
-				return _output_stream;
-			}
-		}
-
-		public IOCondition pending_io {
-			get {
-				lock (state)
-					return sctp_events;
-			}
-		}
-
-		private State _state = CREATED;
-		private SctpInputStream _input_stream;
-		private SctpOutputStream _output_stream;
-
 		private DatagramBasedSource transport_source;
 		private uint8[] transport_buffer = new uint8[65536];
 
 		private void * sctp_socket;
-		private IOCondition sctp_events = 0;
 		private SctpTimerSource sctp_source;
 		private uint16 stream_id;
 		private ByteArray dcep_message = new ByteArray ();
 
-		private Gee.Map<unowned Source, IOCondition> sources = new Gee.HashMap<unowned Source, IOCondition> ();
-
-		private Cancellable io_cancellable = new Cancellable ();
-
-		public enum State {
-			CREATED,
-			OPENING,
-			OPENED,
-			CLOSED
-		}
-
 		public SctpConnection (DatagramBased transport_socket, PeerSetup setup, uint16 port, size_t max_message_size) {
 			Object (
 				transport_socket: transport_socket,
@@ -649,14 +610,9 @@ namespace Frida {
 		protected extern static void _initialize_sctp_backend ();
 
 		construct {
-			_input_stream = new SctpInputStream (this);
-			_output_stream = new SctpOutputStream (this);
-
 			sctp_socket = _create_sctp_socket ();
 			_connect_sctp_socket (sctp_socket, port);
 
-			var main_context = MainContext.get_thread_default ();
-
 			transport_source = transport_socket.create_source (IOCondition.IN, io_cancellable);
 			transport_source.set_callback (on_transport_socket_readable);
 			transport_source.attach (main_context);
@@ -669,17 +625,22 @@ namespace Frida {
 
 		protected extern void _connect_sctp_socket (void * sock, uint16 port);
 
-		public override bool close (GLib.Cancellable? cancellable) throws IOError {
-			do_close ();
-			return true;
+		protected override VirtualStream.State query_initial_state () {
+			return CREATED;
 		}
 
-		public override async bool close_async (int io_priority, GLib.Cancellable? cancellable) throws IOError {
-			do_close ();
-			return true;
+		protected override IOCondition query_events () {
+			return _query_sctp_socket_events (sctp_socket);
 		}
 
-		private void do_close () {
+		protected override void update_pending_io () {
+			base.update_pending_io ();
+			sctp_source.invalidate ();
+		}
+
+		protected extern static IOCondition _query_sctp_socket_events (void * sock);
+
+		protected override void handle_close () {
 			sctp_source.destroy ();
 			transport_source.destroy ();
 
@@ -689,13 +650,17 @@ namespace Frida {
 
 		public extern static void _close (void * sock);
 
-		public void shutdown (SctpShutdownType type) throws IOError {
-			_shutdown (sctp_socket, type);
+		public override void shutdown_read () throws IOError {
+			_shutdown (sctp_socket, READ);
+		}
+
+		public override void shutdown_write () throws IOError {
+			_shutdown (sctp_socket, WRITE);
 		}
 
 		public extern static void _shutdown (void * sock, SctpShutdownType type) throws IOError;
 
-		public ssize_t recv (uint8[] buffer) throws IOError {
+		public override ssize_t read (uint8[] buffer) throws IOError {
 			ssize_t n = -1;
 
 			try {
@@ -711,18 +676,18 @@ namespace Frida {
 						handle_dcep_message (stream_id, dcep_message.steal ());
 					}
 					throw new IOError.WOULD_BLOCK ("Resource temporarily unavailable");
-				} else if (protocol_id == NONE || _state != OPENED) {
+				} else if (protocol_id == NONE || state != OPEN) {
 					throw new IOError.WOULD_BLOCK ("Resource temporarily unavailable");
 				}
 			} finally {
-				update_sctp_events ();
+				update_pending_io ();
 			}
 
 			return n;
 		}
 
-		public ssize_t send (uint8[] buffer) throws IOError {
-			if (_state != OPENED)
+		public override ssize_t write (uint8[] buffer) throws IOError {
+			if (state != OPEN)
 				throw new IOError.WOULD_BLOCK ("Resource temporarily unavailable");
 
 			ssize_t n = ssize_t.min (buffer.length, (ssize_t) max_message_size);
@@ -730,20 +695,10 @@ namespace Frida {
 			try {
 				return _send (sctp_socket, stream_id, WEBRTC_BINARY, buffer[0:n]);
 			} finally {
-				update_sctp_events ();
+				update_pending_io ();
 			}
 		}
 
-		public void register_source (Source source, IOCondition condition) {
-			lock (state)
-				sources[source] = condition | IOCondition.ERR | IOCondition.HUP;
-		}
-
-		public void unregister_source (Source source) {
-			lock (state)
-				sources.unset (source);
-		}
-
 		private bool on_transport_socket_readable (DatagramBased datagram_based, IOCondition condition) {
 			var v = InputVector ();
 			v.buffer = transport_buffer;
@@ -783,9 +738,9 @@ namespace Frida {
 		}
 
 		protected void _on_sctp_socket_events_changed () {
-			update_sctp_events ();
+			update_pending_io ();
 
-			if (_state == CREATED && setup == ACTIVE && (sctp_events & IOCondition.OUT) != 0) {
+			if (state == CREATED && setup == ACTIVE && (pending_io & IOCondition.OUT) != 0) {
 				stream_id = 1;
 
 				uint8[] open_message = {
@@ -799,31 +754,12 @@ namespace Frida {
 				};
 				try {
 					_send (sctp_socket, stream_id, WEBRTC_DCEP, open_message);
-					_state = OPENING;
+					state = OPENING;
 				} catch (IOError e) {
 				}
 			}
 		}
 
-		private void update_sctp_events () {
-			IOCondition new_events = _query_sctp_socket_events (sctp_socket);
-
-			lock (state) {
-				sctp_events = new_events;
-
-				foreach (var entry in sources.entries) {
-					unowned Source source = entry.key;
-					IOCondition c = entry.value;
-					if ((new_events & c) != 0)
-						source.set_ready_time (0);
-				}
-
-				sctp_source.invalidate ();
-			}
-		}
-
-		protected extern static IOCondition _query_sctp_socket_events (void * sock);
-
 		protected extern static ssize_t _recv (void * sock, uint8[] buffer, out uint16 stream_id,
 			out PayloadProtocolId protocol_id, out SctpMessageFlags message_flags) throws IOError;
 
@@ -835,7 +771,7 @@ namespace Frida {
 
 			switch (type) {
 				case DATA_CHANNEL_OPEN: {
-					if (_state != CREATED || setup == ACTIVE)
+					if (state != CREATED || setup == ACTIVE)
 						return;
 
 					this.stream_id = stream_id;
@@ -843,15 +779,15 @@ namespace Frida {
 					uint8[] reply = { DcepMessageType.DATA_CHANNEL_ACK };
 					_send (sctp_socket, stream_id, WEBRTC_DCEP, reply);
 
-					_state = OPENED;
+					state = OPEN;
 
 					break;
 				}
 				case DATA_CHANNEL_ACK:
-					if (_state != OPENING)
+					if (state != OPENING)
 						return;
 
-					_state = OPENED;
+					state = OPEN;
 
 					break;
 			}
@@ -886,140 +822,6 @@ namespace Frida {
 		DATA_CHANNEL_ACK = 0x02
 	}
 
-	private class SctpInputStream : InputStream, PollableInputStream {
-		public weak SctpConnection connection {
-			get;
-			construct;
-		}
-
-		public SctpInputStream (SctpConnection connection) {
-			Object (connection: connection);
-		}
-
-		public override bool close (Cancellable? cancellable) throws IOError {
-			connection.shutdown (READ);
-			return true;
-		}
-
-		public override async bool close_async (int io_priority, Cancellable? cancellable) throws GLib.IOError {
-			return close (cancellable);
-		}
-
-		public override ssize_t read (uint8[] buffer, Cancellable? cancellable) throws IOError {
-			assert_not_reached ();
-		}
-
-		public bool can_poll () {
-			return true;
-		}
-
-		public bool is_readable () {
-			return (connection.pending_io & IOCondition.IN) != 0;
-		}
-
-		public PollableSource create_source (Cancellable? cancellable) {
-			return new PollableSource.full (this, new SctpIOSource (connection, IOCondition.IN), cancellable);
-		}
-
-		public ssize_t read_nonblocking_fn (uint8[] buffer) throws GLib.Error {
-			return connection.recv (buffer);
-		}
-	}
-
-	private class SctpOutputStream : OutputStream, PollableOutputStream {
-		public weak SctpConnection connection {
-			get;
-			construct;
-		}
-
-		public SctpOutputStream (SctpConnection connection) {
-			Object (connection: connection);
-		}
-
-		public override bool close (Cancellable? cancellable) throws IOError {
-			connection.shutdown (WRITE);
-			return true;
-		}
-
-		public override async bool close_async (int io_priority, Cancellable? cancellable) throws GLib.IOError {
-			return close (cancellable);
-		}
-
-		public override bool flush (GLib.Cancellable? cancellable) throws GLib.Error {
-			return true;
-		}
-
-		public override async bool flush_async (int io_priority, GLib.Cancellable? cancellable) throws GLib.Error {
-			return true;
-		}
-
-		public override ssize_t write (uint8[] buffer, Cancellable? cancellable) throws IOError {
-			assert_not_reached ();
-		}
-
-		public bool can_poll () {
-			return true;
-		}
-
-		public bool is_writable () {
-			return (connection.pending_io & IOCondition.OUT) != 0;
-		}
-
-		public PollableSource create_source (Cancellable? cancellable) {
-			return new PollableSource.full (this, new SctpIOSource (connection, IOCondition.OUT), cancellable);
-		}
-
-		public ssize_t write_nonblocking_fn (uint8[]? buffer) throws GLib.Error {
-			return connection.send (buffer);
-		}
-
-		public PollableReturn writev_nonblocking_fn (OutputVector[] vectors, out size_t bytes_written) throws GLib.Error {
-			assert_not_reached ();
-		}
-	}
-
-	private class SctpIOSource : Source {
-		public SctpConnection connection;
-		public IOCondition condition;
-
-		public SctpIOSource (SctpConnection connection, IOCondition condition) {
-			this.connection = connection;
-			this.condition = condition;
-
-			connection.register_source (this, condition);
-		}
-
-		~SctpIOSource () {
-			connection.unregister_source (this);
-		}
-
-		protected override bool prepare (out int timeout) {
-			timeout = -1;
-			return (connection.pending_io & condition) != 0;
-		}
-
-		protected override bool check () {
-			return (connection.pending_io & condition) != 0;
-		}
-
-		protected override bool dispatch (SourceFunc? callback) {
-			set_ready_time (-1);
-
-			if (callback == null)
-				return Source.REMOVE;
-
-			return callback ();
-		}
-
-		protected static bool closure_callback (Closure closure) {
-			var return_value = Value (typeof (bool));
-
-			closure.invoke (ref return_value, {});
-
-			return return_value.get_boolean ();
-		}
-	}
-
 	private class SctpTimerSource : Source {
 		private static int64 last_process_time = -1;
 

lib/base/promise.vala

@@ -1,5 +1,5 @@
 namespace Frida {
-	public class Promise<T> {
+	public sealed class Promise<T> {
 		private Impl<T> impl;
 
 		public Future<T> future {
@@ -46,7 +46,8 @@ namespace Frida {
 			}
 			private GLib.Error? _error;
 
-			private Gee.ArrayQueue<CompletionFuncEntry> on_complete;
+			private Gee.ArrayQueue<CompletionFuncEntry>? on_complete;
+			private Gee.ArrayQueue<ThenHandlerEntry<T>>? on_then;
 
 			public async T wait_async (Cancellable? cancellable) throws Frida.Error, IOError {
 				if (_ready)
@@ -74,7 +75,21 @@ namespace Frida {
 				return get_result ();
 			}
 
-			private T get_result () throws Frida.Error, IOError {
+			public void then (owned FutureCompletionHandler<T> handler) {
+				if (_ready) {
+					schedule (() => {
+						handler (this);
+						return Source.REMOVE;
+					});
+					return;
+				}
+
+				if (on_then == null)
+					on_then = new Gee.ArrayQueue<ThenHandlerEntry<T>> ();
+				on_then.offer (new ThenHandlerEntry<T> ((owned) handler));
+			}
+
+			public T get_result () throws Frida.Error, IOError {
 				if (error != null) {
 					if (error is Frida.Error)
 						throw (Frida.Error) error;
@@ -111,19 +126,32 @@ namespace Frida {
 			internal void transition_to_ready () {
 				_ready = true;
 
-				if (on_complete != null && !on_complete.is_empty) {
-					var source = new IdleSource ();
-					source.set_priority (Priority.HIGH);
-					source.set_callback (() => {
-						CompletionFuncEntry? entry;
-						while ((entry = on_complete.poll ()) != null)
-							entry.func ();
-						on_complete = null;
-						return false;
+				if (on_complete != null || on_then != null) {
+					schedule (() => {
+						if (on_complete != null) {
+							CompletionFuncEntry? entry;
+							while ((entry = on_complete.poll ()) != null)
+								entry.func ();
+							on_complete = null;
+						}
+
+						if (on_then != null) {
+							ThenHandlerEntry? entry;
+							while ((entry = on_then.poll ()) != null)
+								entry.handler (this);
+							on_then = null;
+						}
+
+						return Source.REMOVE;
 					});
-					source.attach (MainContext.get_thread_default ());
 				}
 			}
+
+			private static void schedule (owned SourceFunc function) {
+				var source = new IdleSource ();
+				source.set_callback ((owned) function);
+				source.attach (MainContext.get_thread_default ());
+			}
 		}
 
 		private class CompletionFuncEntry {
@@ -133,6 +161,14 @@ namespace Frida {
 				this.func = (owned) func;
 			}
 		}
+
+		private class ThenHandlerEntry<T> {
+			public FutureCompletionHandler<T> handler;
+
+			public ThenHandlerEntry (owned FutureCompletionHandler<T> handler) {
+				this.handler = (owned) handler;
+			}
+		}
 	}
 
 	public interface Future<T> : Object {
@@ -140,5 +176,9 @@ namespace Frida {
 		public abstract T? value { get; }
 		public abstract GLib.Error? error { get; }
 		public abstract async T wait_async (Cancellable? cancellable) throws Frida.Error, IOError;
+		public abstract void then (owned FutureCompletionHandler<T> handler);
+		public abstract T get_result () throws Frida.Error, IOError;
 	}
+
+	public delegate void FutureCompletionHandler<T> (Future<T> future);
 }

lib/base/rpc.vala

@@ -1,5 +1,5 @@
 namespace Frida {
-	public class RpcClient : Object {
+	public sealed class RpcClient : Object {
 		public weak RpcPeer peer {
 			get;
 			construct;

lib/base/service.vala

@@ -0,0 +1,48 @@
+namespace Frida {
+	public sealed class ServiceSessionRegistry : Object {
+		public signal void session_closed (ServiceSessionId id);
+
+		private Gee.Map<ServiceSessionId?, ServiceSession> sessions =
+			new Gee.HashMap<ServiceSessionId?, ServiceSession> (ServiceSessionId.hash, ServiceSessionId.equal);
+
+		~ServiceSessionRegistry () {
+			clear ();
+		}
+
+		public void clear () {
+			foreach (var session in sessions.values.to_array ())
+				session.close ();
+			sessions.clear ();
+		}
+
+		public void register (ServiceSessionId id, ServiceSession session) {
+			sessions[id] = session;
+
+			ServiceSessionId? boxed_id = id;
+			session.set_data ("service-session-id", boxed_id);
+
+			session.close.connect (on_session_close);
+		}
+
+		public ServiceSession link (ServiceSessionId id) throws Error {
+			var session = sessions[id];
+			if (session == null)
+				throw new Error.INVALID_ARGUMENT ("Invalid session ID");
+			return session;
+		}
+
+		public void unlink (ServiceSessionId id) {
+			ServiceSession? session;
+			if (sessions.unset (id, out session)) {
+				session.close.disconnect (on_session_close);
+
+				session_closed (id);
+			}
+		}
+
+		private void on_session_close (ServiceSession session) {
+			ServiceSessionId? id = session.get_data ("service-session-id");
+			unlink (id);
+		}
+	}
+}

lib/base/session.vala

@@ -1,5 +1,5 @@
 namespace Frida {
-	[DBus (name = "re.frida.HostSession16")]
+	[DBus (name = "re.frida.HostSession17")]
 	public interface HostSession : Object {
 		public abstract async void ping (uint interval_seconds, Cancellable? cancellable) throws GLib.Error;
 
@@ -27,6 +27,10 @@ namespace Frida {
 		public abstract async InjectorPayloadId inject_library_blob (uint pid, uint8[] blob, string entrypoint, string data,
 			Cancellable? cancellable) throws GLib.Error;
 
+		public abstract async ChannelId open_channel (string address, Cancellable? cancellable) throws GLib.Error;
+
+		public abstract async ServiceSessionId open_service (string address, Cancellable? cancellable) throws GLib.Error;
+
 		public signal void spawn_added (HostSpawnInfo info);
 		public signal void spawn_removed (HostSpawnInfo info);
 		public signal void child_added (HostChildInfo info);
@@ -34,10 +38,12 @@ namespace Frida {
 		public signal void process_crashed (CrashInfo crash);
 		public signal void output (uint pid, int fd, uint8[] data);
 		public signal void agent_session_detached (AgentSessionId id, SessionDetachReason reason, CrashInfo crash);
+		public signal void channel_closed (ChannelId id);
+		public signal void service_session_closed (ServiceSessionId id);
 		public signal void uninjected (InjectorPayloadId id);
 	}
 
-	[DBus (name = "re.frida.AgentSessionProvider16")]
+	[DBus (name = "re.frida.AgentSessionProvider17")]
 	public interface AgentSessionProvider : Object {
 		public abstract async void open (AgentSessionId id, HashTable<string, Variant> options,
 			Cancellable? cancellable) throws GLib.Error;
@@ -52,7 +58,7 @@ namespace Frida {
 		public signal void child_gating_changed (uint subscriber_count);
 	}
 
-	[DBus (name = "re.frida.AgentSession16")]
+	[DBus (name = "re.frida.AgentSession17")]
 	public interface AgentSession : Object {
 		public abstract async void close (Cancellable? cancellable) throws GLib.Error;
 
@@ -94,7 +100,7 @@ namespace Frida {
 		public signal void candidate_gathering_done ();
 	}
 
-	[DBus (name = "re.frida.AgentController16")]
+	[DBus (name = "re.frida.AgentController17")]
 	public interface AgentController : Object {
 #if !WINDOWS
 		public abstract async HostChildId prepare_to_fork (uint parent_pid, Cancellable? cancellable, out uint parent_injectee_id,
@@ -115,7 +121,7 @@ namespace Frida {
 			Cancellable? cancellable) throws GLib.Error;
 	}
 
-	[DBus (name = "re.frida.AgentMessageSink16")]
+	[DBus (name = "re.frida.AgentMessageSink17")]
 	public interface AgentMessageSink : Object {
 		public abstract async void post_messages (AgentMessage[] messages, uint batch_id,
 			Cancellable? cancellable) throws GLib.Error;
@@ -145,7 +151,7 @@ namespace Frida {
 		DEBUGGER
 	}
 
-	public class AgentMessageTransmitter : Object {
+	public sealed class AgentMessageTransmitter : Object {
 		public signal void closed ();
 		public signal void new_candidates (string[] candidate_sdps);
 		public signal void candidate_gathering_done ();
@@ -743,13 +749,30 @@ namespace Frida {
 		}
 	}
 
-	[DBus (name = "re.frida.TransportBroker16")]
+	[DBus (name = "re.frida.Channel17")]
+	public interface Channel : Object {
+		public abstract async void close (Cancellable? cancellable) throws GLib.Error;
+		public abstract async void input (uint8[] data, Cancellable? cancellable) throws GLib.Error;
+		public signal void output (uint8[] data);
+	}
+
+	[DBus (name = "re.frida.ServiceSession17")]
+	public interface ServiceSession : Object {
+		public signal void close ();
+		public signal void message (Variant message);
+
+		public abstract async void activate (Cancellable? cancellable) throws GLib.Error;
+		public abstract async void cancel (Cancellable? cancellable) throws GLib.Error;
+		public abstract async Variant request (Variant parameters, Cancellable? cancellable) throws GLib.Error;
+	}
+
+	[DBus (name = "re.frida.TransportBroker17")]
 	public interface TransportBroker : Object {
 		public abstract async void open_tcp_transport (AgentSessionId id, Cancellable? cancellable, out uint16 port,
 			out string token) throws GLib.Error;
 	}
 
-	[DBus (name = "re.frida.PortalSession16")]
+	[DBus (name = "re.frida.PortalSession17")]
 	public interface PortalSession : Object {
 		public abstract async void join (HostApplicationInfo app, SpawnStartState current_state,
 			AgentSessionId[] interrupted_sessions, HashTable<string, Variant> options, Cancellable? cancellable,
@@ -758,19 +781,19 @@ namespace Frida {
 		public signal void kill ();
 	}
 
-	[DBus (name = "re.frida.BusSession16")]
+	[DBus (name = "re.frida.BusSession17")]
 	public interface BusSession : Object {
 		public abstract async void attach (Cancellable? cancellable) throws GLib.Error;
 		public abstract async void post (string json, bool has_data, uint8[] data, Cancellable? cancellable) throws GLib.Error;
 		public signal void message (string json, bool has_data, uint8[] data);
 	}
 
-	[DBus (name = "re.frida.AuthenticationService16")]
+	[DBus (name = "re.frida.AuthenticationService17")]
 	public interface AuthenticationService : Object {
 		public abstract async string authenticate (string token, Cancellable? cancellable) throws GLib.Error;
 	}
 
-	public class StaticAuthenticationService : Object, AuthenticationService {
+	public sealed class StaticAuthenticationService : Object, AuthenticationService {
 		public string token_hash {
 			get;
 			construct;
@@ -795,13 +818,13 @@ namespace Frida {
 		}
 	}
 
-	public class NullAuthenticationService : Object, AuthenticationService {
+	public sealed class NullAuthenticationService : Object, AuthenticationService {
 		public async string authenticate (string token, Cancellable? cancellable) throws Error, IOError {
 			throw new Error.INVALID_OPERATION ("Authentication not expected");
 		}
 	}
 
-	public class UnauthorizedHostSession : Object, HostSession {
+	public sealed class UnauthorizedHostSession : Object, HostSession {
 		public async void ping (uint interval_seconds, Cancellable? cancellable) throws Error, IOError {
 			throw_not_authorized ();
 		}
@@ -875,9 +898,17 @@ namespace Frida {
 				Cancellable? cancellable) throws Error, IOError {
 			throw_not_authorized ();
 		}
+
+		public async ChannelId open_channel (string address, Cancellable? cancellable) throws Error, IOError {
+			throw_not_authorized ();
+		}
+
+		public async ServiceSessionId open_service (string address, Cancellable? cancellable) throws Error, IOError {
+			throw_not_authorized ();
+		}
 	}
 
-	public class UnauthorizedPortalSession : Object, PortalSession {
+	public sealed class UnauthorizedPortalSession : Object, PortalSession {
 		public async void join (HostApplicationInfo app, SpawnStartState current_state,
 				AgentSessionId[] interrupted_sessions, HashTable<string, Variant> options,
 				Cancellable? cancellable, out SpawnStartState next_state) throws Error, IOError {
@@ -885,7 +916,7 @@ namespace Frida {
 		}
 	}
 
-	public class UnauthorizedBusSession : Object, BusSession {
+	public sealed class UnauthorizedBusSession : Object, BusSession {
 		public async void attach (Cancellable? cancellable) throws Error, IOError {
 			throw_not_authorized ();
 		}
@@ -1083,7 +1114,7 @@ namespace Frida {
 		}
 	}
 
-	public class FrontmostQueryOptions : Object {
+	public sealed class FrontmostQueryOptions : Object {
 		public Scope scope {
 			get;
 			set;
@@ -1113,7 +1144,7 @@ namespace Frida {
 		}
 	}
 
-	public class ApplicationQueryOptions : Object {
+	public sealed class ApplicationQueryOptions : Object {
 		public Scope scope {
 			get;
 			set;
@@ -1171,7 +1202,7 @@ namespace Frida {
 		}
 	}
 
-	public class ProcessQueryOptions : Object {
+	public sealed class ProcessQueryOptions : Object {
 		public Scope scope {
 			get;
 			set;
@@ -1313,7 +1344,7 @@ namespace Frida {
 		}
 	}
 
-	public class SessionOptions : Object {
+	public sealed class SessionOptions : Object {
 		public Realm realm {
 			get;
 			set;
@@ -1502,6 +1533,46 @@ namespace Frida {
 		}
 	}
 
+	public struct ChannelId {
+		public string handle;
+
+		public ChannelId (string handle) {
+			this.handle = handle;
+		}
+
+		public ChannelId.generate () {
+			this.handle = Uuid.string_random ().replace ("-", "");
+		}
+
+		public static uint hash (ChannelId? id) {
+			return id.handle.hash ();
+		}
+
+		public static bool equal (ChannelId? a, ChannelId? b) {
+			return a.handle == b.handle;
+		}
+	}
+
+	public struct ServiceSessionId {
+		public string handle;
+
+		public ServiceSessionId (string handle) {
+			this.handle = handle;
+		}
+
+		public ServiceSessionId.generate () {
+			this.handle = Uuid.string_random ().replace ("-", "");
+		}
+
+		public static uint hash (ServiceSessionId? id) {
+			return id.handle.hash ();
+		}
+
+		public static bool equal (ServiceSessionId? a, ServiceSessionId? b) {
+			return a.handle == b.handle;
+		}
+	}
+
 	public struct AgentScriptId {
 		public uint handle;
 
@@ -1518,7 +1589,7 @@ namespace Frida {
 		}
 	}
 
-	public class ScriptOptions : Object {
+	public sealed class ScriptOptions : Object {
 		public string? name {
 			get;
 			set;
@@ -1608,7 +1679,7 @@ namespace Frida {
 		SHARED_MEMORY
 	}
 
-	public class SnapshotOptions : Object {
+	public sealed class SnapshotOptions : Object {
 		public string? warmup_script {
 			get;
 			set;
@@ -1683,7 +1754,7 @@ namespace Frida {
 		}
 	}
 
-	public class PortalOptions : Object {
+	public sealed class PortalOptions : Object {
 		public TlsCertificate? certificate {
 			get;
 			set;
@@ -1746,7 +1817,7 @@ namespace Frida {
 		}
 	}
 
-	public class PeerOptions : Object {
+	public sealed class PeerOptions : Object {
 		public string? stun_server {
 			get;
 			set;
@@ -1807,7 +1878,7 @@ namespace Frida {
 		}
 	}
 
-	public class Relay : Object {
+	public sealed class Relay : Object {
 		public string address {
 			get;
 			construct;
@@ -2048,7 +2119,8 @@ namespace Frida {
 		public const string AGENT_SESSION = "/re/frida/AgentSession";
 		public const string AGENT_CONTROLLER = "/re/frida/AgentController";
 		public const string AGENT_MESSAGE_SINK = "/re/frida/AgentMessageSink";
-		public const string CHILD_SESSION = "/re/frida/ChildSession";
+		public const string CHANNEL = "/re/frida/Channel";
+		public const string SERVICE = "/re/frida/Service";
 		public const string TRANSPORT_BROKER = "/re/frida/TransportBroker";
 		public const string PORTAL_SESSION = "/re/frida/PortalSession";
 		public const string BUS_SESSION = "/re/frida/BusSession";
@@ -2061,6 +2133,14 @@ namespace Frida {
 		public static string for_agent_message_sink (AgentSessionId id) {
 			return AGENT_MESSAGE_SINK + "/" + id.handle;
 		}
+
+		public static string for_channel (ChannelId id) {
+			return CHANNEL + "/" + id.handle;
+		}
+
+		public static string for_service_session (ServiceSessionId id) {
+			return SERVICE + "/" + id.handle;
+		}
 	}
 
 	namespace Marshal {

lib/base/socket.vala

@@ -97,7 +97,7 @@ namespace Frida {
 		}
 	}
 
-	public class EndpointParameters : Object {
+	public sealed class EndpointParameters : Object {
 		public string? address {
 			get;
 			construct;
@@ -234,7 +234,7 @@ namespace Frida {
 		return (inet_addr.get_family () == IPV6) ? @"[$host]" : host;
 	}
 
-	public class WebService : Object {
+	public sealed class WebService : Object {
 		public signal void incoming (IOStream connection, SocketAddress remote_address, DynamicInterface? dynamic_iface);
 
 		public EndpointParameters endpoint_params {
@@ -548,12 +548,17 @@ namespace Frida {
 
 				IOStream soup_stream = connection.get_io_stream ();
 
-				SocketConnection socket_stream;
-				soup_stream.get ("base-iostream", out socket_stream);
+				IOStream base_iostream;
+				soup_stream.get ("base-iostream", out base_iostream);
 
-				SocketAddress remote_address;
+				SocketAddress? remote_address = null;
+				SocketConnection? sc = base_iostream as SocketConnection;
+				if (sc == null) {
+					IOStream tls_stream = base_iostream;
+					tls_stream.get ("base-io-stream", out sc);
+				}
 				try {
-					remote_address = socket_stream.get_remote_address ();
+					remote_address = sc.get_remote_address ();
 				} catch (GLib.Error e) {
 					assert_not_reached ();
 				}
@@ -852,7 +857,7 @@ namespace Frida {
 		public abstract void start ();
 	}
 
-	public class DynamicInterface : Object {
+	public sealed class DynamicInterface : Object {
 		public string name {
 			get;
 			construct;
@@ -870,7 +875,7 @@ namespace Frida {
 
 	public extern static unowned string _version_string ();
 
-	private class WebConnection : IOStream {
+	private sealed class WebConnection : VirtualStream {
 		public signal void websocket_closed ();
 
 		public Soup.WebsocketConnection websocket {
@@ -878,37 +883,9 @@ namespace Frida {
 			construct;
 		}
 
-		public override InputStream input_stream {
-			get {
-				return _input_stream;
-			}
-		}
-
-		public override OutputStream output_stream {
-			get {
-				return _output_stream;
-			}
-		}
-
-		public IOCondition pending_io {
-			get {
-				lock (state)
-					return _pending_io;
-			}
-		}
-
-		private WebInputStream _input_stream;
-		private WebOutputStream _output_stream;
-
-		private Soup.WebsocketState state;
-		private IOCondition _pending_io;
 		private ByteArray recv_queue = new ByteArray ();
 		private ByteArray send_queue = new ByteArray ();
 
-		private Gee.Map<unowned Source, IOCondition> sources = new Gee.HashMap<unowned Source, IOCondition> ();
-
-		private MainContext main_context;
-
 		public WebConnection (Soup.WebsocketConnection websocket) {
 			Object (websocket: websocket);
 		}
@@ -916,14 +893,6 @@ namespace Frida {
 		construct {
 			websocket.max_incoming_payload_size = (256 * 1024) + 1; // XXX: There's an off-by-one error in libsoup
 
-			_input_stream = new WebInputStream (this);
-			_output_stream = new WebOutputStream (this);
-
-			state = websocket.state;
-			_pending_io = (state == OPEN) ? IOCondition.OUT : IOCondition.IN;
-
-			main_context = MainContext.ref_thread_default ();
-
 			websocket.closed.connect (on_closed);
 			websocket.message.connect (on_message);
 		}
@@ -933,51 +902,50 @@ namespace Frida {
 			websocket.closed.disconnect (on_closed);
 		}
 
-		public override bool close (GLib.Cancellable? cancellable) throws IOError {
-			_close ();
-			return true;
-		}
-
-		public override async bool close_async (int io_priority, GLib.Cancellable? cancellable) throws IOError {
-			_close ();
-			return true;
-		}
-
-		private void _close () {
-			if (main_context.is_owner ()) {
-				do_close ();
-			} else {
-				var source = new IdleSource ();
-				source.set_callback (() => {
-					do_close ();
-					return Source.REMOVE;
-				});
-				source.attach (main_context);
+		protected override VirtualStream.State query_initial_state () {
+			switch (websocket.state) {
+				case OPEN:
+				case CLOSING:
+					return OPEN;
+				case CLOSED:
+					return CLOSED;
 			}
+			assert_not_reached ();
 		}
 
-		private void do_close () {
+		protected override IOCondition query_events () {
+			IOCondition new_events = 0;
+
+			if (recv_queue.len > 0 || state != OPEN)
+				new_events |= IN;
+
+			if (state == OPEN)
+				new_events |= OUT;
+
+			return new_events;
+		}
+
+		protected override void handle_close () {
 			if (websocket.state != OPEN)
 				return;
 
 			websocket.close (1000, "Closing");
 		}
 
-		public ssize_t recv (uint8[] buffer) throws IOError {
-			ssize_t n;
-			lock (state) {
+		public override ssize_t read (uint8[] buffer) throws IOError {
+			ssize_t n = 0;
+			with_state_lock (() => {
 				n = ssize_t.min (recv_queue.len, buffer.length);
 				if (n > 0) {
 					Memory.copy (buffer, recv_queue.data, n);
 					recv_queue.remove_range (0, (uint) n);
 
-					recompute_pending_io_unlocked ();
+					update_pending_io ();
 				} else {
 					if (state == OPEN)
 						n = -1;
 				}
-
-			}
+			});
 
 			if (n == -1)
 				throw new IOError.WOULD_BLOCK ("Resource temporarily unavailable");
@@ -985,9 +953,10 @@ namespace Frida {
 			return n;
 		}
 
-		public ssize_t send (uint8[] buffer) {
-			lock (state)
+		public override ssize_t write (uint8[] buffer) {
+			with_state_lock (() => {
 				send_queue.append (buffer);
+			});
 
 			if (main_context.is_owner ()) {
 				process_send_queue ();
@@ -1011,190 +980,34 @@ namespace Frida {
 
 			while (true) {
 				uint8[]? chunk = null;
-				lock (state) {
+				with_state_lock (() => {
 					size_t n = size_t.min (send_queue.len, max_message_size);
 					if (n == 0)
 						return;
 					chunk = send_queue.data[0:n];
 					send_queue.remove_range (0, (uint) n);
-				}
+				});
+				if (chunk == null)
+					return;
 
 				websocket.send_binary (chunk);
 			}
 		}
 
-		public void register_source (Source source, IOCondition condition) {
-			lock (state)
-				sources[source] = condition;
-		}
-
-		public void unregister_source (Source source) {
-			lock (state)
-				sources.unset (source);
-		}
-
 		private void on_closed () {
-			lock (state) {
-				state = websocket.state;
-				recompute_pending_io_unlocked ();
-			}
+			with_state_lock (() => {
+				state = CLOSED;
+				update_pending_io ();
+			});
 
 			websocket_closed ();
 		}
 
 		private void on_message (int type, Bytes message) {
-			lock (state) {
+			with_state_lock (() => {
 				recv_queue.append (message.get_data ());
-				recompute_pending_io_unlocked ();
-			}
-		}
-
-		private void recompute_pending_io_unlocked () {
-			IOCondition new_io = 0;
-			if (recv_queue.len > 0 || state != OPEN)
-				new_io |= IN;
-			if (state == OPEN)
-				new_io |= OUT;
-			_pending_io = new_io;
-
-			foreach (var entry in sources.entries) {
-				unowned Source source = entry.key;
-				IOCondition c = entry.value;
-				if ((new_io & c) != 0)
-					source.set_ready_time (0);
-			}
-		}
-	}
-
-	private class WebInputStream : InputStream, PollableInputStream {
-		public weak WebConnection connection {
-			get;
-			construct;
-		}
-
-		public WebInputStream (WebConnection connection) {
-			Object (connection: connection);
-		}
-
-		public override bool close (Cancellable? cancellable) throws IOError {
-			return true;
-		}
-
-		public override async bool close_async (int io_priority, Cancellable? cancellable) throws GLib.IOError {
-			return close (cancellable);
-		}
-
-		public override ssize_t read (uint8[] buffer, Cancellable? cancellable) throws IOError {
-			assert_not_reached ();
-		}
-
-		public bool can_poll () {
-			return true;
-		}
-
-		public bool is_readable () {
-			return (connection.pending_io & IOCondition.IN) != 0;
-		}
-
-		public PollableSource create_source (Cancellable? cancellable) {
-			return new PollableSource.full (this, new WebIOSource (connection, IOCondition.IN), cancellable);
-		}
-
-		public ssize_t read_nonblocking_fn (uint8[] buffer) throws GLib.Error {
-			return connection.recv (buffer);
-		}
-	}
-
-	private class WebOutputStream : OutputStream, PollableOutputStream {
-		public weak WebConnection connection {
-			get;
-			construct;
-		}
-
-		public WebOutputStream (WebConnection connection) {
-			Object (connection: connection);
-		}
-
-		public override bool close (Cancellable? cancellable) throws IOError {
-			return true;
-		}
-
-		public override async bool close_async (int io_priority, Cancellable? cancellable) throws GLib.IOError {
-			return close (cancellable);
-		}
-
-		public override bool flush (GLib.Cancellable? cancellable) throws GLib.Error {
-			return true;
-		}
-
-		public override async bool flush_async (int io_priority, GLib.Cancellable? cancellable) throws GLib.Error {
-			return true;
-		}
-
-		public override ssize_t write (uint8[] buffer, Cancellable? cancellable) throws IOError {
-			assert_not_reached ();
-		}
-
-		public bool can_poll () {
-			return true;
-		}
-
-		public bool is_writable () {
-			return (connection.pending_io & IOCondition.OUT) != 0;
-		}
-
-		public PollableSource create_source (Cancellable? cancellable) {
-			return new PollableSource.full (this, new WebIOSource (connection, IOCondition.OUT), cancellable);
-		}
-
-		public ssize_t write_nonblocking_fn (uint8[]? buffer) throws GLib.Error {
-			return connection.send (buffer);
-		}
-
-		public PollableReturn writev_nonblocking_fn (OutputVector[] vectors, out size_t bytes_written) throws GLib.Error {
-			assert_not_reached ();
-		}
-	}
-
-	private class WebIOSource : Source {
-		public WebConnection connection;
-		public IOCondition condition;
-
-		public WebIOSource (WebConnection connection, IOCondition condition) {
-			this.connection = connection;
-			this.condition = condition;
-
-			connection.register_source (this, condition);
-		}
-
-		~WebIOSource () {
-			connection.unregister_source (this);
-		}
-
-		protected override bool prepare (out int timeout) {
-			timeout = -1;
-			return (connection.pending_io & condition) != 0;
-		}
-
-		protected override bool check () {
-			return (connection.pending_io & condition) != 0;
-		}
-
-		protected override bool dispatch (SourceFunc? callback) {
-			set_ready_time (-1);
-
-			if (callback == null)
-				return Source.REMOVE;
-
-			return callback ();
-		}
-
-		protected static bool closure_callback (Closure closure) {
-			var return_value = Value (typeof (bool));
-
-			closure.invoke (ref return_value, {});
-
-			return return_value.get_boolean ();
+				update_pending_io ();
+			});
 		}
 	}
 }

lib/base/stream.vala

@@ -0,0 +1,336 @@
+namespace Frida {
+	public abstract class VirtualStream : IOStream {
+		public override InputStream input_stream {
+			get {
+				return _input_stream;
+			}
+		}
+
+		public override OutputStream output_stream {
+			get {
+				return _output_stream;
+			}
+		}
+
+		public IOCondition pending_io {
+			get {
+				lock (state)
+					return _pending_io;
+			}
+		}
+
+		protected State state = OPEN;
+
+		private VirtualInputStream _input_stream;
+		private VirtualOutputStream _output_stream;
+
+		private IOCondition _pending_io;
+
+		private Gee.Map<unowned Source, IOCondition> sources = new Gee.HashMap<unowned Source, IOCondition> ();
+
+		protected Cancellable io_cancellable = new Cancellable ();
+
+		protected MainContext main_context;
+
+		protected enum State {
+			CREATED,
+			OPENING,
+			OPEN,
+			CLOSED
+		}
+
+		protected delegate void WorkFunc ();
+
+		construct {
+			_input_stream = new VirtualInputStream (this);
+			_output_stream = new VirtualOutputStream (this);
+
+			main_context = MainContext.ref_thread_default ();
+
+			state = query_initial_state ();
+			_pending_io = query_events ();
+		}
+
+		public override void dispose () {
+			_output_stream.detach ();
+			_input_stream.detach ();
+
+			io_cancellable.cancel ();
+
+			base.dispose ();
+		}
+
+		protected virtual State query_initial_state () {
+			return OPEN;
+		}
+
+		protected abstract IOCondition query_events ();
+
+		public override bool close (GLib.Cancellable? cancellable) throws IOError {
+			_close ();
+			return true;
+		}
+
+		public override async bool close_async (int io_priority, GLib.Cancellable? cancellable) throws IOError {
+			_close ();
+			return true;
+		}
+
+		private void _close () {
+			if (main_context.is_owner ()) {
+				do_close ();
+			} else {
+				var source = new IdleSource ();
+				source.set_callback (() => {
+					do_close ();
+					return Source.REMOVE;
+				});
+				source.attach (main_context);
+			}
+		}
+
+		private void do_close () {
+			if (state == CLOSED)
+				return;
+
+			handle_close ();
+		}
+
+		protected abstract void handle_close ();
+
+		public virtual void shutdown_read () throws IOError {
+		}
+
+		public virtual void shutdown_write () throws IOError {
+		}
+
+		public abstract ssize_t read (uint8[] buffer) throws IOError;
+
+		public abstract ssize_t write (uint8[] buffer) throws IOError;
+
+		protected void with_state_lock (WorkFunc func) {
+			lock (state)
+				func ();
+		}
+
+		public void register_source (Source source, IOCondition condition) {
+			lock (state)
+				sources[source] = condition | IOCondition.ERR | IOCondition.HUP;
+		}
+
+		public void unregister_source (Source source) {
+			lock (state)
+				sources.unset (source);
+		}
+
+		protected virtual void update_pending_io () {
+			lock (state) {
+				_pending_io = query_events ();
+
+				foreach (var entry in sources.entries) {
+					unowned Source source = entry.key;
+					IOCondition c = entry.value;
+					if ((_pending_io & c) != 0)
+						source.set_ready_time (0);
+				}
+			}
+
+			notify_property ("pending-io");
+		}
+	}
+
+	private sealed class VirtualInputStream : InputStream, PollableInputStream {
+		private weak VirtualStream stream;
+
+		public VirtualInputStream (VirtualStream stream) {
+			Object ();
+			this.stream = stream;
+		}
+
+		internal void detach () {
+			stream = null;
+		}
+
+		public override bool close (Cancellable? cancellable) throws IOError {
+			if (stream != null)
+				stream.shutdown_read ();
+			return true;
+		}
+
+		public override async bool close_async (int io_priority, Cancellable? cancellable) throws GLib.IOError {
+			return close (cancellable);
+		}
+
+		public override ssize_t read (uint8[] buffer, Cancellable? cancellable) throws IOError {
+			if (stream == null)
+				return 0;
+
+			if (!is_readable ()) {
+				bool done = false;
+				var mutex = Mutex ();
+				var cond = Cond ();
+
+				ulong io_handler = stream.notify["pending-io"].connect ((obj, pspec) => {
+					if (is_readable ()) {
+						mutex.lock ();
+						done = true;
+						cond.signal ();
+						mutex.unlock ();
+					}
+				});
+				ulong cancellation_handler = 0;
+				if (cancellable != null) {
+					cancellation_handler = cancellable.connect (() => {
+						mutex.lock ();
+						done = true;
+						cond.signal ();
+						mutex.unlock ();
+					});
+				}
+
+				if (!is_readable ()) {
+					mutex.lock ();
+					while (!done)
+						cond.wait (mutex);
+					mutex.unlock ();
+				}
+
+				if (cancellation_handler != 0)
+					cancellable.disconnect (cancellation_handler);
+				stream.disconnect (io_handler);
+
+				cancellable.set_error_if_cancelled ();
+			}
+
+			return stream.read (buffer);
+		}
+
+		public bool can_poll () {
+			return true;
+		}
+
+		public bool is_readable () {
+			if (stream == null)
+				return true;
+			return (stream.pending_io & IOCondition.IN) != 0;
+		}
+
+		public PollableSource create_source (Cancellable? cancellable) {
+			return new PollableSource.full (this, new VirtualIOSource (stream, IOCondition.IN), cancellable);
+		}
+
+		public ssize_t read_nonblocking_fn (uint8[] buffer) throws GLib.Error {
+			if (stream == null)
+				return 0;
+			return stream.read (buffer);
+		}
+	}
+
+	private sealed class VirtualOutputStream : OutputStream, PollableOutputStream {
+		private weak VirtualStream? stream;
+
+		public VirtualOutputStream (VirtualStream stream) {
+			Object ();
+			this.stream = stream;
+		}
+
+		internal void detach () {
+			stream = null;
+		}
+
+		public override bool close (Cancellable? cancellable) throws IOError {
+			if (stream != null)
+				stream.shutdown_write ();
+			return true;
+		}
+
+		public override async bool close_async (int io_priority, Cancellable? cancellable) throws GLib.IOError {
+			return close (cancellable);
+		}
+
+		public override bool flush (GLib.Cancellable? cancellable) throws GLib.Error {
+			return true;
+		}
+
+		public override async bool flush_async (int io_priority, GLib.Cancellable? cancellable) throws GLib.Error {
+			return true;
+		}
+
+		public override ssize_t write (uint8[] buffer, Cancellable? cancellable) throws IOError {
+			return stream.write (buffer);
+		}
+
+		public bool can_poll () {
+			return true;
+		}
+
+		public bool is_writable () {
+			if (stream == null)
+				return false;
+			return (stream.pending_io & IOCondition.OUT) != 0;
+		}
+
+		public PollableSource create_source (Cancellable? cancellable) {
+			return new PollableSource.full (this, new VirtualIOSource (stream, IOCondition.OUT), cancellable);
+		}
+
+		public ssize_t write_nonblocking_fn (uint8[]? buffer) throws GLib.Error {
+			if (stream == null)
+				throw new IOError.CLOSED ("Virtual is closed");
+			return stream.write (buffer);
+		}
+
+		public PollableReturn writev_nonblocking_fn (OutputVector[] vectors, out size_t bytes_written) throws GLib.Error {
+			assert_not_reached ();
+		}
+	}
+
+	private class VirtualIOSource : Source {
+		public VirtualStream? stream;
+		public IOCondition condition;
+
+		public VirtualIOSource (VirtualStream stream, IOCondition condition) {
+			this.stream = stream;
+			this.condition = condition;
+
+			if (stream != null)
+				stream.register_source (this, condition);
+		}
+
+		~VirtualIOSource () {
+			if (stream != null)
+				stream.unregister_source (this);
+		}
+
+		protected override bool prepare (out int timeout) {
+			timeout = -1;
+			return is_ready ();
+		}
+
+		protected override bool check () {
+			return is_ready ();
+		}
+
+		private bool is_ready () {
+			IOCondition pending_io = (stream != null) ? stream.pending_io : IOCondition.IN;
+			return (pending_io & condition) != 0;
+		}
+
+		protected override bool dispatch (SourceFunc? callback) {
+			set_ready_time (-1);
+
+			if (callback == null)
+				return Source.REMOVE;
+
+			return callback ();
+		}
+
+		protected static bool closure_callback (Closure closure) {
+			var return_value = Value (typeof (bool));
+
+			closure.invoke (ref return_value, {});
+
+			return return_value.get_boolean ();
+		}
+	}
+}

lib/base/value.vala

@@ -38,7 +38,7 @@ namespace Frida {
 		public abstract unowned string get_uuid_value () throws Error;
 	}
 
-	public class VariantReader : Object, ObjectReader {
+	public sealed class VariantReader : Object, ObjectReader {
 		public Variant root_object {
 			get {
 				return scopes.peek_head ().val;
@@ -180,7 +180,7 @@ namespace Frida {
 		}
 	}
 
-	public class JsonObjectBuilder : Object, ObjectBuilder {
+	public sealed class JsonObjectBuilder : Object, ObjectBuilder {
 		private Json.Builder builder = new Json.Builder ();
 		private Gee.Map<string, Bytes> raw_values = new Gee.HashMap<string, Bytes> ();
 
@@ -267,7 +267,7 @@ namespace Frida {
 		}
 	}
 
-	public class JsonObjectReader : Object, ObjectReader {
+	public sealed class JsonObjectReader : Object, ObjectReader {
 		private Json.Reader reader;
 
 		public JsonObjectReader (string json) throws Error {

lib/base/xpc.vala

@@ -1,5 +1,5 @@
 namespace Frida {
-	public class XpcClient : Object {
+	public sealed class XpcClient : Object {
 		public signal void message (Darwin.Xpc.Object obj);
 
 		public State state {
@@ -123,7 +123,7 @@ namespace Frida {
 		}
 	}
 
-	public class XpcObjectReader {
+	public sealed class XpcObjectReader {
 		public Darwin.Xpc.Object root_object {
 			get {
 				return scopes.peek_head ().object;
@@ -136,6 +136,8 @@ namespace Frida {
 			}
 		}
 
+		public delegate int TranslateErrorFunc (string domain, int code, string description);
+
 		private Gee.Deque<Scope> scopes = new Gee.ArrayQueue<Scope> ();
 
 		public XpcObjectReader (Darwin.Xpc.Object obj) {
@@ -224,6 +226,28 @@ namespace Frida {
 			return error.get_string (Darwin.Xpc.Error.KEY_DESCRIPTION);
 		}
 
+		public void check_nserror (TranslateErrorFunc translate_error) throws Error {
+			if (!has_member ("error"))
+				return;
+
+			read_member ("error");
+
+			unowned string domain = read_member ("domain").get_string_value ();
+			end_member ();
+
+			var code = (int) read_member ("code").get_int64_value ();
+			end_member ();
+
+			string description = read_member ("userInfo").read_member ("NSLocalizedDescription").get_string_value ();
+			if (description.has_suffix ("."))
+				description = description[:description.length - 1];
+
+			throw (Error) new GLib.Error.literal (
+				Quark.from_string ("frida-error-quark"),
+				translate_error (domain, code, description),
+				description);
+		}
+
 		public unowned Darwin.Xpc.Object get_object_value (Darwin.Xpc.Type expected_type) throws Error {
 			return peek_scope ().get_object<Darwin.Xpc.Object> (expected_type);
 		}

lib/gadget/gadget.vala

@@ -1,5 +1,5 @@
 namespace Frida.Gadget {
-	private class Config : Object, Json.Serializable {
+	private sealed class Config : Object, Json.Serializable {
 		public Object interaction {
 			get;
 			set;
@@ -93,7 +93,7 @@ namespace Frida.Gadget {
 		}
 	}
 
-	private class ScriptInteraction : Object, Json.Serializable {
+	private sealed class ScriptInteraction : Object, Json.Serializable {
 		public string path {
 			get;
 			set;
@@ -145,7 +145,7 @@ namespace Frida.Gadget {
 		}
 	}
 
-	private class ScriptDirectoryInteraction : Object {
+	private sealed class ScriptDirectoryInteraction : Object {
 		public string path {
 			get;
 			set;
@@ -164,7 +164,7 @@ namespace Frida.Gadget {
 		}
 	}
 
-	private class ScriptConfig : Object, Json.Serializable {
+	private sealed class ScriptConfig : Object, Json.Serializable {
 		public ProcessFilter? filter {
 			get;
 			set;
@@ -216,7 +216,7 @@ namespace Frida.Gadget {
 		}
 	}
 
-	private class ProcessFilter : Object {
+	private sealed class ProcessFilter : Object {
 		public string[] executables {
 			get;
 			set;
@@ -258,7 +258,7 @@ namespace Frida.Gadget {
 		}
 	}
 
-	private class ListenInteraction : SocketInteraction {
+	private sealed class ListenInteraction : SocketInteraction {
 		public PortConflictBehavior on_port_conflict {
 			get;
 			set;
@@ -287,7 +287,7 @@ namespace Frida.Gadget {
 		}
 	}
 
-	private class ConnectInteraction : SocketInteraction, Json.Serializable {
+	private sealed class ConnectInteraction : SocketInteraction, Json.Serializable {
 		public string[]? acl {
 			get;
 			set;
@@ -328,7 +328,7 @@ namespace Frida.Gadget {
 		}
 	}
 
-	private class Location : Object {
+	private sealed class Location : Object {
 		public string executable_name {
 			get;
 			construct;
@@ -988,7 +988,7 @@ namespace Frida.Gadget {
 		}
 	}
 
-	private class ScriptRunner : BaseController {
+	private sealed class ScriptRunner : BaseController {
 		private ScriptEngine engine;
 		private Script script;
 
@@ -1036,7 +1036,7 @@ namespace Frida.Gadget {
 		}
 	}
 
-	private class ScriptDirectoryRunner : BaseController {
+	private sealed class ScriptDirectoryRunner : BaseController {
 		public string directory_path {
 			get;
 			construct;
@@ -1241,8 +1241,14 @@ namespace Frida.Gadget {
 		}
 	}
 
-	private class Script : Object, RpcPeer {
-		private const uint8 QUICKJS_BYTECODE_MAGIC = 0x02;
+	private sealed class Script : Object, RpcPeer {
+		private const uint8 QUICKJS_BYTECODE_MAGIC =
+#if BIG_ENDIAN
+			0x42
+#else
+			0x02
+#endif
+			;
 
 		public enum ChangeBehavior {
 			IGNORE,
@@ -1453,7 +1459,7 @@ namespace Frida.Gadget {
 		}
 	}
 
-	private class ControlServer : BaseController {
+	private sealed class ControlServer : BaseController {
 		public EndpointParameters endpoint_params {
 			get;
 			construct;
@@ -1927,6 +1933,14 @@ namespace Frida.Gadget {
 				throw new Error.NOT_SUPPORTED ("Unable to inject libraries when embedded");
 			}
 
+			public async ChannelId open_channel (string address, Cancellable? cancellable) throws Error, IOError {
+				throw new Error.NOT_SUPPORTED ("Unable to open channels when embedded");
+			}
+
+			public async ServiceSessionId open_service (string address, Cancellable? cancellable) throws Error, IOError {
+				throw new Error.NOT_SUPPORTED ("Unable to open services when embedded");
+			}
+
 			private void validate_pid (uint pid) throws Error {
 				if (pid != this_process.pid)
 					throw new Error.NOT_SUPPORTED ("Unable to act on other processes when embedded");
@@ -1958,7 +1972,7 @@ namespace Frida.Gadget {
 		}
 	}
 
-	private class ClusterClient : BaseController {
+	private sealed class ClusterClient : BaseController {
 		public SocketConnectable connectable {
 			get;
 			construct;

lib/netif/tunnel-interface-observer.vala

@@ -1,4 +1,4 @@
-public class Frida.TunnelInterfaceObserver : Object, DynamicInterfaceObserver {
+public sealed class Frida.TunnelInterfaceObserver : Object, DynamicInterfaceObserver {
 #if IOS || TVOS
 	private Gee.Map<string, DynamicInterface> interfaces = new Gee.HashMap<string, DynamicInterface> ();
 

lib/payload/cloak.vala

@@ -1,5 +1,5 @@
 namespace Frida {
-	public class ThreadIgnoreScope {
+	public sealed class ThreadIgnoreScope {
 		public enum Kind {
 			APPLICATION_THREAD,
 			FRIDA_THREAD
@@ -43,7 +43,7 @@ namespace Frida {
 	}
 
 #if ANDROID
-	public class ThreadCountCloaker : Object {
+	public sealed class ThreadCountCloaker : Object {
 		private ReadFunc * read_slot;
 		private static ReadFunc old_read_impl;
 
@@ -156,12 +156,12 @@ namespace Frida {
 		}
 	}
 #else
-	public class ThreadCountCloaker : Object {
+	public sealed class ThreadCountCloaker : Object {
 	}
 #endif
 
 #if LINUX
-	public class ThreadListCloaker : Object, DirListFilter {
+	public sealed class ThreadListCloaker : Object, DirListFilter {
 		private string our_dir_by_pid;
 		private DirListCloaker cloaker;
 
@@ -180,7 +180,7 @@ namespace Frida {
 		}
 	}
 
-	public class FDListCloaker : Object, DirListFilter {
+	public sealed class FDListCloaker : Object, DirListFilter {
 		private string our_dir_by_pid;
 		private DirListCloaker cloaker;
 
@@ -199,7 +199,7 @@ namespace Frida {
 		}
 	}
 
-	private class DirListCloaker : Object {
+	private sealed class DirListCloaker : Object {
 		public weak DirListFilter filter {
 			get;
 			construct;
@@ -467,10 +467,10 @@ namespace Frida {
 		public abstract bool matches_file (string name);
 	}
 #else
-	public class ThreadListCloaker : Object {
+	public sealed class ThreadListCloaker : Object {
 	}
 
-	public class FDListCloaker : Object {
+	public sealed class FDListCloaker : Object {
 	}
 #endif
 }

lib/payload/exit-monitor.vala

@@ -1,5 +1,5 @@
 namespace Frida {
-	public class ExitMonitor : Object, Gum.InvocationListener {
+	public sealed class ExitMonitor : Object, Gum.InvocationListener {
 		public weak ExitHandler handler {
 			get;
 			construct;

lib/payload/fd-guard.vala

@@ -1,6 +1,6 @@
 namespace Frida {
 #if WINDOWS
-	public class FileDescriptorGuard : Object {
+	public sealed class FileDescriptorGuard : Object {
 		public Gum.MemoryRange agent_range {
 			get;
 			construct;
@@ -11,7 +11,7 @@ namespace Frida {
 		}
 	}
 #else
-	public class FileDescriptorGuard : Object {
+	public sealed class FileDescriptorGuard : Object {
 		public Gum.MemoryRange agent_range {
 			get;
 			construct;

lib/payload/fdt-padder.vala

@@ -1,6 +1,6 @@
 namespace Frida {
 #if WINDOWS
-	public class FileDescriptorTablePadder {
+	public sealed class FileDescriptorTablePadder {
 		public static FileDescriptorTablePadder obtain () {
 			return new FileDescriptorTablePadder ();
 		}
@@ -9,7 +9,7 @@ namespace Frida {
 		}
 	}
 #else
-	public class FileDescriptorTablePadder {
+	public sealed class FileDescriptorTablePadder {
 		private const int MIN_TABLE_SIZE = 32;
 
 		private static unowned FileDescriptorTablePadder shared_instance = null;

lib/payload/fork-monitor.vala

@@ -1,6 +1,6 @@
 namespace Frida {
 #if WINDOWS
-	public class ForkMonitor : Object {
+	public sealed class ForkMonitor : Object {
 		public weak ForkHandler handler {
 			get;
 			construct;
@@ -11,7 +11,7 @@ namespace Frida {
 		}
 	}
 #else
-	public class ForkMonitor : Object, Gum.InvocationListener {
+	public sealed class ForkMonitor : Object, Gum.InvocationListener {
 		public weak ForkHandler handler {
 			get;
 			construct;

lib/payload/portal-client.vala

@@ -1,5 +1,5 @@
 namespace Frida {
-	public class PortalClient : Object, AgentSessionProvider {
+	public sealed class PortalClient : Object, AgentSessionProvider {
 		public signal void resume ();
 		public signal void kill ();
 

lib/payload/script-engine.vala

@@ -1,5 +1,5 @@
 namespace Frida {
-	public class ScriptEngine : Object {
+	public sealed class ScriptEngine : Object {
 		public signal void message_from_script (AgentScriptId script_id, string json, Bytes? data);
 		public signal void message_from_debugger (AgentScriptId script_id, string message);
 
@@ -223,7 +223,7 @@ namespace Frida {
 			source.attach (Gum.ScriptBackend.get_scheduler ().get_js_context ());
 		}
 
-		public class ScriptInstance : Object, RpcPeer {
+		public sealed class ScriptInstance : Object, RpcPeer {
 			public signal void closed ();
 			public signal void message (string json, Bytes? data);
 			public signal void debug_message (string message);

lib/payload/spawn-monitor.vala

@@ -1,5 +1,5 @@
 namespace Frida {
-	public class SpawnMonitor : Object, Gum.InvocationListener {
+	public sealed class SpawnMonitor : Object, Gum.InvocationListener {
 		public weak SpawnHandler handler {
 			get;
 			construct;

lib/payload/thread-suspend-monitor.vala

@@ -1,6 +1,6 @@
 namespace Frida {
 #if DARWIN
-	public class ThreadSuspendMonitor : Object {
+	public sealed class ThreadSuspendMonitor : Object {
 		public weak ProcessInvader invader {
 			get;
 			construct;
@@ -131,7 +131,7 @@ namespace Frida {
 		}
 	}
 #else
-	public class ThreadSuspendMonitor : Object {
+	public sealed class ThreadSuspendMonitor : Object {
 		public weak ProcessInvader invader {
 			get;
 			construct;

lib/payload/unwind-sitter-glue.c

@@ -55,6 +55,7 @@ struct _FridaUnwindHookState
   gpointer set_info_original;
   void (* set_info) (gpointer cursor, gint is_return_address);
   gpointer (* get_reg) (gpointer cursor, gint reg);
+  GumInterceptor * interceptor;
 };
 
 #if __has_feature (ptrauth_calls)
@@ -97,7 +98,6 @@ _frida_unwind_sitter_hook_libunwind (void)
 #if GLIB_SIZEOF_VOID_P == 8
   gpointer * set_info_slot;
   gpointer get_reg_impl;
-  GumInterceptor * interceptor;
 
   if (state != NULL)
     return;
@@ -121,8 +121,9 @@ _frida_unwind_sitter_hook_libunwind (void)
   state->set_info = FRIDA_RESIGN_PTR (state->set_info_original);
   state->get_reg = FRIDA_RESIGN_PTR (get_reg_impl);
 
-  interceptor = gum_interceptor_obtain ();
-  if (gum_interceptor_replace (interceptor, state->set_info_original, frida_unwind_cursor_set_info_replacement, NULL, NULL)
+  state->interceptor = gum_interceptor_obtain ();
+
+  if (gum_interceptor_replace (state->interceptor, state->set_info_original, frida_unwind_cursor_set_info_replacement, NULL, NULL)
       != GUM_REPLACE_OK)
     goto unsupported_version;
 
@@ -137,13 +138,12 @@ unsupported_version:
 void
 _frida_unwind_sitter_unhook_libunwind (void)
 {
-  GumInterceptor * interceptor;
-
   if (state == NULL)
     return;
 
-  interceptor = gum_interceptor_obtain ();
-  gum_interceptor_revert (interceptor, state->set_info_original);
+  gum_interceptor_revert (state->interceptor, state->set_info_original);
+
+  g_object_unref (state->interceptor);
 
   g_slice_free (FridaUnwindHookState, state);
   state = NULL;

lib/payload/unwind-sitter.vala

@@ -1,6 +1,6 @@
 namespace Frida {
 #if DARWIN
-	public class UnwindSitter : Object {
+	public sealed class UnwindSitter : Object {
 		public weak ProcessInvader invader {
 			get;
 			construct;
@@ -62,7 +62,7 @@ namespace Frida {
 		public extern static void _unhook_libunwind ();
 	}
 #else
-	public class UnwindSitter : Object {
+	public sealed class UnwindSitter : Object {
 		public weak ProcessInvader invader {
 			get;
 			construct;

lib/pipe/pipe.vala

@@ -1,5 +1,5 @@
 namespace Frida {
-	public class PipeTransport : Object {
+	public sealed class PipeTransport : Object {
 		public string local_address {
 			get;
 			construct;
@@ -42,7 +42,7 @@ namespace Frida {
 	}
 
 #if WINDOWS
-	public class WindowsPipe : IOStream {
+	public sealed class WindowsPipe : IOStream {
 		public string address {
 			get;
 			construct;

meson.build

@@ -6,13 +6,17 @@ project('frida-core', 'vala', 'c', 'cpp',
   default_options: ['c_std=gnu99,c99', 'cpp_std=c++17'],
 )
 
+fs = import('fs')
+
 if not meson.get_compiler('vala').version().endswith('-frida')
   error('''Incompatible Vala compiler detected.
 
 Frida currently relies on features not yet upstream. Grab the Frida-optimized
-Vala compiler from:
+Vala sources from:
 
-    https://github.com/frida/vala''')
+    https://github.com/frida/vala
+
+and compile them with Meson.''')
 endif
 
 c_languages = ['c', 'cpp']
@@ -20,7 +24,7 @@ cc = meson.get_compiler('c')
 cpp = meson.get_compiler('cpp')
 
 releng = meson.global_source_root() / 'releng'
-if not import('fs').exists(releng)
+if not fs.exists(releng)
   releng = meson.project_source_root() / 'releng'
 endif
 
@@ -98,11 +102,6 @@ else
   host_cpu_mode = '32'
 endif
 host_docks_mobile_devices = host_os in ['windows', 'macos', 'linux'] and host_cpu_mode == '64'
-gumjs_archs = {
-  'x86': 'ia32',
-  'x86_64': 'x64',
-}
-host_arch_gumjs = gumjs_archs.get(host_arch, host_arch)
 
 if host_os_family == 'darwin'
   c_languages += ['objc', 'objcpp']
@@ -162,6 +161,14 @@ if host_os_family == 'darwin'
   endif
 endif
 
+if host_machine.endian() == 'big'
+  if host_abi in ['arm', 'armhf']
+    host_abi = 'armbe8'
+  elif host_abi == 'arm64'
+    host_abi = 'arm64be'
+  endif
+endif
+
 if host_os_family == 'darwin' and host_arch == 'arm64'
   host_is_modern = host_abi == 'arm64e'
 else
@@ -264,12 +271,14 @@ if host_os == 'linux'
 #endif
 '''
   if cc.compiles(glibc_src, name: 'compiling for glibc')
-    cdata.set('HAVE_GLIBC', 1)
+    libc = 'glibc'
   elif cc.compiles(uclibc_src, name: 'compiling for uClibc')
-    cdata.set('HAVE_UCLIBC', 1)
+    libc = 'uclibc'
   else
-    cdata.set('HAVE_MUSL', 1)
+    libc = 'musl'
   endif
+  cdata.set('HAVE_' + libc.to_upper(), 1)
+  vala_flags += '--define=' + libc.to_upper()
 endif
 
 if get_option('b_sanitize') == 'address'
@@ -354,6 +363,44 @@ if host_os == 'android'
   ])
 endif
 
+if host_toolchain == 'microsoft'
+  lib = find_program('lib')
+  ar = ''
+  nm = ''
+  ranlib = ''
+  strip = ''
+else
+  lib = ''
+  ar = find_program('ar')
+  nm = find_program('nm')
+  ranlib = find_program('ranlib')
+  strip = find_program('strip')
+endif
+if host_os_family != 'windows'
+  if host_os_family == 'darwin'
+    readelf = ''
+    otool = find_program('otool')
+    libtool = find_program('libtool')
+  else
+    readelf = find_program('readelf')
+    otool = ''
+    libtool = ''
+  endif
+else
+  readelf = ''
+  otool = ''
+  libtool = ''
+endif
+if host_os_family == 'darwin'
+  install_name_tool = find_program('install_name_tool')
+  lipo = find_program('lipo')
+  codesign = find_program('codesign')
+else
+  install_name_tool = ''
+  lipo = ''
+  codesign = ''
+endif
+
 have_local_backend = get_option('local_backend').allowed()
 have_fruity_backend = get_option('fruity_backend') \
     .disable_auto_if(not host_docks_mobile_devices) \
@@ -366,15 +413,54 @@ have_barebone_backend = get_option('barebone_backend') \
     .disable_if(not quickjs_dep.found()) \
     .disable_auto_if(not host_docks_mobile_devices) \
     .allowed()
-have_compiler_backend = get_option('compiler_backend') \
-    .disable_if(not have_local_backend, error_message: 'compiler backend requires the local backend for script execution') \
-    .disable_auto_if(host_os == 'watchos') \
-    .allowed()
-if get_option('compiler_snapshot').auto()
-  # Generating our snapshot with V8's CPU simulator takes a very long time.
-  generate_compiler_snapshot = meson.can_run_host_binaries()
-else
-  generate_compiler_snapshot = get_option('compiler_snapshot').enabled()
+compiler_backend_opt = get_option('compiler_backend') \
+    .disable_auto_if(host_os == 'watchos')
+have_compiler_backend = false
+if compiler_backend_opt.allowed()
+  go = find_program('go', native: true, required: false)
+  if go.found()
+    message('Detecting cgo availability')
+    detect_output = run_command(
+      [
+        python,
+        files('tools' / 'cgo' / 'detect.py'),
+        go,
+        host_os,
+        host_abi,
+        shlib_suffix,
+        cc.get_id(),
+        '>>>', cc.cmd_array(), '<<<',
+        '>>>', ar, '<<<',
+        '>>>', nm, '<<<',
+        '>>>', ranlib, '<<<',
+      ],
+      capture: true,
+      check: true
+    ).stdout()
+    lines = detect_output.split('\n')
+    status = lines[0]
+    if status == 'ok'
+      have_compiler_backend = true
+      tokens = lines[1].split(' ')
+      go_mode = tokens[0]
+      go_config = tokens[1]
+      compiler_backend_static_compilation = go_mode == 'c-archive'
+      if compiler_backend_static_compilation
+        vala_flags += '--define=COMPILER_BACKEND_STATIC_COMPILATION'
+      endif
+    else
+      error_message = lines[1]
+      if compiler_backend_opt.enabled()
+        error(error_message)
+      else
+        warning(f'Building without Compiler backend: @error_message@')
+      endif
+    endif
+  elif compiler_backend_opt.enabled()
+    error('Need Go >= 1.24 to build the Compiler backend powered by ESBuild and typescript-go')
+  else
+    warning('Building without Compiler backend: Go >= 1.24 not found')
+  endif
 endif
 
 build_gadget = get_option('gadget') \
@@ -414,7 +500,7 @@ foreach b : [['local', have_local_backend],
   endif
 endforeach
 
-if have_barebone_backend or have_compiler_backend
+if host_os_family == 'darwin' or host_os == 'android' or have_barebone_backend or have_compiler_backend
   node = find_program('node', version: '>=18.0.0', native: true, required: false)
   if not node.found()
     error('Need Node.js >= 18.0.0 to process JavaScript code at build time')
@@ -431,7 +517,6 @@ if gi_dep.found()
 else
   girdir = get_option('prefix') / get_option('datadir') / 'gir-1.0'
 endif
-uninstalled_girdir = meson.current_build_dir() / 'src'
 
 vapidir = get_option('prefix') / get_option('datadir') / 'vala' / 'vapi'
 
@@ -445,12 +530,6 @@ gumjs_inspector_vala_args = ['--pkg=frida-gumjs-inspector-1.0', gum_vala_args]
 have_v8 = gumjs_dep.get_variable('gumjs_v8') == 'enabled'
 if have_v8
   vala_flags += ['--define=HAVE_V8']
-  v8_mksnapshot = find_program('v8-mksnapshot-@0@-@1@'.format(host_os, host_abi), required: false)
-  if not v8_mksnapshot.found()
-    v8_mksnapshot = ''
-  endif
-else
-  v8_mksnapshot = ''
 endif
 
 backend_deps_private = []
@@ -572,42 +651,6 @@ if host_os in ['ios', 'tvos']
   backend_libs_private += ['-Wl,-framework,CoreGraphics', '-Wl,-framework,UIKit']
 endif
 
-if host_toolchain == 'microsoft'
-  lib = find_program('lib')
-  ar = ''
-  nm = ''
-  strip = ''
-else
-  lib = ''
-  ar = find_program('ar')
-  nm = find_program('nm')
-  strip = find_program('strip')
-endif
-if host_os_family != 'windows'
-  if host_os_family == 'darwin'
-    readelf = ''
-    otool = find_program('otool')
-    libtool = find_program('libtool')
-  else
-    readelf = find_program('readelf')
-    otool = ''
-    libtool = ''
-  endif
-else
-  readelf = ''
-  otool = ''
-  libtool = ''
-endif
-if host_os_family == 'darwin'
-  install_name_tool = find_program('install_name_tool')
-  lipo = find_program('lipo')
-  codesign = find_program('codesign')
-else
-  install_name_tool = ''
-  lipo = ''
-  codesign = ''
-endif
-
 if get_option('devkits').length() != 0
   if get_option('default_library') != 'static'
     error('Devkits can only be generated from static libraries')
@@ -665,6 +708,8 @@ post_process = [
   '@INPUT0@',
 ]
 
+compile_js_agent = files('tools' / 'compile-js-agent.py')
+
 mapper_opt = get_option('mapper')
 if mapper_opt.auto()
   have_mapper = host_os_family == 'darwin'
@@ -699,14 +744,15 @@ vala_flags += [
   '--pkg', 'config',
 ]
 
-vala_flags += ['--define=' + host_os_family.to_upper()]
+vala_flags += '--define=' + host_os_family.to_upper()
 if host_os != host_os_family
-  vala_flags += ['--define=' + host_os.to_upper()]
+  vala_flags += '--define=' + host_os.to_upper()
 endif
-vala_flags += ['--define=' + host_arch.to_upper()]
+vala_flags += '--define=' + host_arch.to_upper()
 if host_abi != host_arch
-  vala_flags += ['--define=' + host_abi.to_upper()]
+  vala_flags += '--define=' + host_abi.to_upper()
 endif
+vala_flags += '--define=' + host_machine.endian().to_upper() + '_ENDIAN'
 add_project_arguments(vala_flags, language: 'vala')
 add_project_arguments('-I' + vapidir, language: 'c')
 
@@ -751,7 +797,6 @@ summary(
     'assets': get_option('assets'),
     'mapper': have_mapper,
     'connectivity': tls_provider_dep.found(),
-    'compiler_snapshot': generate_compiler_snapshot,
     'gadget': build_gadget,
     'server': build_server,
     'portal': build_portal,

meson.options

@@ -37,13 +37,7 @@ option('barebone_backend',
 option('compiler_backend',
   type: 'feature',
   value: 'auto',
-  description: 'Include frida-compile backend powered by GumJS',
-)
-
-option('compiler_snapshot',
-  type: 'feature',
-  value: 'auto',
-  description: 'Speed up compiler startup by using a snapshot'
+  description: 'Include frida-compile backend powered by ESBuild and typescript-go',
 )
 
 option('assets',

portal/portal.vala

@@ -142,7 +142,7 @@ namespace Frida.Portal {
 		return application.run ();
 	}
 
-	private class Application : Object {
+	private sealed class Application : Object {
 		public signal void ready (bool success);
 
 		public PortalService service {

server/server.vala

@@ -235,7 +235,7 @@ namespace Frida.Server {
 	}
 #endif
 
-	private class Application : Object {
+	private sealed class Application : Object {
 		public signal void ready (bool success);
 
 		public string? device_id {

src/agent-container.vala

@@ -1,5 +1,5 @@
 namespace Frida {
-	public class AgentContainer : Object, AgentSessionProvider {
+	public sealed class AgentContainer : Object, AgentSessionProvider {
 		public DBusConnection connection {
 			get;
 			private set;

src/api/generate.py

@@ -16,13 +16,21 @@ GIR_NAMESPACES = {
     "glib": GLIB_NAMESPACE,
 }
 
+CORE_TAG_IMPLEMENTS = f"{{{CORE_NAMESPACE}}}implements"
 CORE_TAG_FIELD = f"{{{CORE_NAMESPACE}}}field"
 CORE_TAG_CONSTRUCTOR = f"{{{CORE_NAMESPACE}}}constructor"
 CORE_TAG_METHOD = f"{{{CORE_NAMESPACE}}}method"
 
+OBJECT_TYPE_PATTERN = re.compile(r"\bpublic\s+(sealed )?(class|interface)\s+(\w+)\b")
+
 def main():
     parser = argparse.ArgumentParser(description="Generate refined Frida API definitions")
     parser.add_argument('--output', dest='output_type', choices=['bundle', 'header', 'gir', 'vapi', 'vapi-stamp'], default='bundle')
+    parser.add_argument('frida_version', metavar='frida-version', type=str)
+    parser.add_argument('frida_major_version', metavar='frida-major-version', type=str)
+    parser.add_argument('frida_minor_version', metavar='frida-minor-version', type=str)
+    parser.add_argument('frida_micro_version', metavar='frida-micro-version', type=str)
+    parser.add_argument('frida_nano_version', metavar='frida-nano-version', type=str)
     parser.add_argument('api_version', metavar='api-version', type=str)
     parser.add_argument('core_header', metavar='/path/to/frida-core.h', type=argparse.FileType('r', encoding='utf-8'))
     parser.add_argument('core_gir', metavar='/path/to/Frida-x.y.gir', type=argparse.FileType('r', encoding='utf-8'))
@@ -35,6 +43,13 @@ def main():
     args = parser.parse_args()
 
     output_type = args.output_type
+    frida_version = args.frida_version
+    frida_version_components = (
+        args.frida_major_version,
+        args.frida_minor_version,
+        args.frida_micro_version,
+        args.frida_nano_version,
+    )
     api_version = args.api_version
     core_header = args.core_header.read()
     core_gir = args.core_gir.read()
@@ -50,6 +65,7 @@ def main():
 
     toplevel_names = [
         "frida.vala",
+        "package-manager.vala",
         "control-service.vala",
         "portal-service.vala",
         "file-monitor.vala",
@@ -75,7 +91,7 @@ def main():
     elif output_type == 'vapi':
         enable_vapi = True
 
-    api = parse_api(api_version, toplevel_code, core_header, core_vapi, base_header, base_vapi)
+    api = parse_api(frida_version, frida_version_components, api_version, toplevel_code, core_header, core_vapi, base_header, base_vapi)
 
     if enable_header:
         emit_header(api, output_dir)
@@ -90,7 +106,26 @@ def emit_header(api, output_dir):
     with OutputFile(output_dir / 'frida-core.h') as output_header_file:
         output_header_file.write("#ifndef __FRIDA_CORE_H__\n#define __FRIDA_CORE_H__\n\n")
 
-        output_header_file.write("#include <glib.h>\n#include <glib-object.h>\n#include <gio/gio.h>\n#include <json-glib/json-glib.h>\n")
+        output_header_file.write("#include <glib.h>\n#include <glib-object.h>\n#include <gio/gio.h>\n#include <json-glib/json-glib.h>\n\n")
+
+        output_header_file.write(f"#define FRIDA_VERSION \"{api.frida_version}\"\n\n")
+
+        for name, value in zip(['MAJOR', 'MINOR', 'MICRO', 'NANO'], api.frida_version_components):
+            output_header_file.write(f"#define FRIDA_{name}_VERSION {value}\n")
+
+        output_header_file.write("""
+#define FRIDA_CHECK_VERSION(maj, min, mic) \\
+    (FRIDA_CURRENT_VERSION >= FRIDA_VERSION_ENCODE ((maj), (min), (mic)))
+
+#define FRIDA_CURRENT_VERSION \\
+    FRIDA_VERSION_ENCODE (    \\
+        FRIDA_MAJOR_VERSION,  \\
+        FRIDA_MINOR_VERSION,  \\
+        FRIDA_MICRO_VERSION)
+
+#define FRIDA_VERSION_ENCODE(maj, min, mic) \\
+    (((maj) * 1000000U) + ((min) * 1000U) + (mic))
+""")
 
         output_header_file.write("\nG_BEGIN_DECLS\n")
 
@@ -203,7 +238,9 @@ def emit_gir(api: ApiSpec, core_gir: str, base_gir: str, output_dir: Path) -> st
         for elem in core_elements + base_elements:
             if tag_name == "class":
                 for child in list(elem):
-                    if child.tag == CORE_TAG_FIELD or child.get("name").startswith("_"):
+                    if (child.tag == CORE_TAG_IMPLEMENTS and child.get("name") == "FridaBase.AgentMessageSink") \
+                            or child.tag == CORE_TAG_FIELD \
+                            or child.get("name").startswith("_"):
                         elem.remove(child)
             merged_namespace.append(elem)
 
@@ -215,6 +252,7 @@ def emit_gir(api: ApiSpec, core_gir: str, base_gir: str, output_dir: Path) -> st
     result = ET.tostring(merged_root,
                          encoding="unicode",
                          xml_declaration=True)
+    result = result.replace("FridaBase.", "Frida.")
     with OutputFile(output_dir / f"Frida-{api.version}.gir") as output_gir:
         output_gir.write(result)
 
@@ -265,7 +303,7 @@ def emit_vapi(api, output_dir):
         output_deps_file.write("gobject-2.0\n")
         output_deps_file.write("gio-2.0\n")
 
-def parse_api(api_version, toplevel_code, core_header, core_vapi, base_header, base_vapi):
+def parse_api(frida_version, frida_version_components, api_version, toplevel_code, core_header, core_vapi, base_header, base_vapi):
     all_headers = core_header + "\n" + base_header
 
     all_enum_names = [m.group(1) for m in re.finditer(r"^\t+public\s+enum\s+(\w+)\s+", toplevel_code + "\n" + base_vapi, re.MULTILINE)]
@@ -288,12 +326,18 @@ def parse_api(api_version, toplevel_code, core_header, core_vapi, base_header, b
         "StaticAuthenticationService": "AuthenticationService",
     }
     internal_type_prefixes = [
+        "AgentMessageKind",
         "Fruity",
         "HostSession",
         "MessageType",
+        "PeerSetup",
+        "PortConflictBehavior",
         "ResultCode",
         "SpawnStartState",
         "State",
+        "StringTerminator",
+        "UnloadPolicy",
+        "WebService",
         "Winjector"
     ]
     seen_enum_names = set()
@@ -375,7 +419,7 @@ def parse_api(api_version, toplevel_code, core_header, core_vapi, base_header, b
             if delegate_cname not in seen_cdelegates:
                 seen_cdelegates.add(delegate_cname)
                 object_type.c_delegate_typedefs.append(beautify_cprototype(d.group(0)))
-        if object_type.kind == 'interface' and object_type.name != "Injector":
+        if object_type.kind == 'interface':
             for m in re.finditer("^(struct _" + object_type.c_name + "Iface {[^}]+};)$", all_headers, re.MULTILINE):
                 object_type.c_iface_definition = beautify_cinterface(m.group(1))
 
@@ -412,8 +456,8 @@ def parse_api(api_version, toplevel_code, core_header, core_vapi, base_header, b
                         current_enum.vapi_declaration = stripped_line
                     else:
                         ignoring = True
-                elif stripped_line.startswith("public class") or stripped_line.startswith("public interface"):
-                    name = re.match(r"^public (class|interface) (\w+) ", stripped_line).group(2)
+                elif (match := OBJECT_TYPE_PATTERN.match(stripped_line)) is not None:
+                    name = match.group(3)
                     if name not in object_type_by_name:
                         ignoring = True
                     else:
@@ -452,7 +496,7 @@ def parse_api(api_version, toplevel_code, core_header, core_vapi, base_header, b
         m = re.search(r"^[\w\*]+ frida_{}.+?;".format(f.name), all_headers, re.MULTILINE | re.DOTALL)
         f.c_prototype = beautify_cprototype(m.group(0))
 
-    return ApiSpec(api_version, object_types, functions, enum_types, error_types)
+    return ApiSpec(frida_version, frida_version_components, api_version, object_types, functions, enum_types, error_types)
 
 def function_is_public(name):
     return not name.startswith("_") and \
@@ -466,17 +510,20 @@ def function_is_public(name):
                 "parse_control_address",
                 "parse_cluster_address",
                 "parse_socket_address",
-                "negotiate_connection"
+                "negotiate_connection",
+                "check_kernel_version",
             ]
 
 def parse_vala_object_types(source) -> List[ApiObjectType]:
-    return [ApiObjectType(m.group(2), m.group(1)) for m in re.finditer(r"^\t+public\s+(class|interface)\s+(\w+)\s+", source, re.MULTILINE)]
+    return [ApiObjectType(m.group(3), m.group(2)) for m in OBJECT_TYPE_PATTERN.finditer(source, re.MULTILINE)]
 
 def parse_vapi_functions(vapi) -> List[ApiFunction]:
     return [ApiFunction(m.group(1), m.group(0)) for m in re.finditer(r"^\tpublic static .+ (\w+) \(.+;", vapi, re.MULTILINE)]
 
 @dataclass
 class ApiSpec:
+    frida_version: str
+    frida_version_components: List[int]
     version: str
     object_types: List[ApiObjectType]
     functions: List[ApiFunction]

src/api/meson.build

@@ -1,6 +1,13 @@
+fs = import('fs')
+
 generate_api = [python, files('generate.py')]
 
 generate_api_args = [
+  frida_version,
+  frida_major_version.to_string(),
+  frida_minor_version.to_string(),
+  frida_micro_version.to_string(),
+  frida_nano_version.to_string(),
   api_version,
   core_build_dir / 'frida-core.h',
   core_build_dir / core_gir_name,
@@ -32,6 +39,11 @@ core_public_h = core_api[0]
 core_public_gir = core_api[1]
 core_public_vapi = [core_api[2], core_api[3]]
 
+install_glib_girs = not gi_dep.found() and not fs.exists(girdir / 'GLib-2.0.gir')
+glib_gir = fs.copyfile('GLib-2.0.gir', install: install_glib_girs, install_dir: girdir)
+gobject_gir = fs.copyfile('GObject-2.0.gir', install: install_glib_girs, install_dir: girdir)
+gio_gir = fs.copyfile('Gio-2.0.gir', install: install_glib_girs, install_dir: girdir)
+
 core_public_vapi_stamp = custom_target('frida-core-vapi-stamp',
   input: core_public_vapi,
   output: f'frida-core-@[email protected]',
@@ -59,8 +71,6 @@ core_public_lib = custom_target('frida-core-library',
   install_dir: get_option('libdir'),
 )
 
-fs = import('fs')
-
 core_public_extra_headers = []
 if host_os == 'android'
   core_public_extra_headers += fs.copyfile(frida_selinux_h)
@@ -71,6 +81,7 @@ if build_machine.system() == 'windows'
 else
   uninstalled_incdir = meson.current_build_dir()
 endif
+uninstalled_girdir = uninstalled_incdir
 uninstalled_vapidir = uninstalled_incdir
 
 uninstalled_variables = {
@@ -86,7 +97,7 @@ installed_variables = {
 }
 
 core_public_dep = declare_dependency(
-  sources: [core_public_h, core_public_gir, core_public_vapi_stamp, core_public_extra_headers],
+  sources: [core_public_h, core_public_gir, glib_gir, gobject_gir, gio_gir, core_public_vapi_stamp, core_public_extra_headers],
   include_directories: include_directories('.'),
   link_args: backend_libs_private,
   link_with: core_public_lib,

src/barebone/allocator.vala

@@ -17,7 +17,7 @@ namespace Frida.Barebone {
 		public abstract async void deallocate (Cancellable? cancellable) throws Error, IOError;
 	}
 
-	public class SimpleAllocator : Object, Allocator {
+	public sealed class SimpleAllocator : Object, Allocator {
 		public size_t page_size {
 			get { return _page_size; }
 		}

src/barebone/arch-arm/machine.vala

@@ -1,6 +1,6 @@
 [CCode (gir_namespace = "FridaBarebone", gir_version = "1.0")]
 namespace Frida.Barebone {
-	public class ArmMachine : Object, Machine {
+	public sealed class ArmMachine : Object, Machine {
 		public override GDB.Client gdb {
 			get;
 			set;

src/barebone/arch-arm64/machine.vala

@@ -1,6 +1,6 @@
 [CCode (gir_namespace = "FridaBarebone", gir_version = "1.0")]
 namespace Frida.Barebone {
-	public class Arm64Machine : Object, Machine {
+	public sealed class Arm64Machine : Object, Machine {
 		public override GDB.Client gdb {
 			get;
 			set;

src/barebone/arch-unknown/machine.vala

@@ -1,6 +1,6 @@
 [CCode (gir_namespace = "FridaBarebone", gir_version = "1.0")]
 namespace Frida.Barebone {
-	public class UnknownMachine : Object, Machine {
+	public sealed class UnknownMachine : Object, Machine {
 		public GDB.Client gdb {
 			get;
 			set;

src/barebone/arch-x86/machine.vala

@@ -1,6 +1,6 @@
 [CCode (gir_namespace = "FridaBarebone", gir_version = "1.0")]
 namespace Frida.Barebone {
-	public class IA32Machine : Object, Machine {
+	public sealed class IA32Machine : Object, Machine {
 		public override GDB.Client gdb {
 			get;
 			set;

src/barebone/arch-x86_64/machine.vala

@@ -1,6 +1,6 @@
 [CCode (gir_namespace = "FridaBarebone", gir_version = "1.0")]
 namespace Frida.Barebone {
-	public class X64Machine : Object, Machine {
+	public sealed class X64Machine : Object, Machine {
 		public override GDB.Client gdb {
 			get;
 			set;

src/barebone/barebone-host-session.vala

@@ -1,5 +1,5 @@
 namespace Frida {
-	public class BareboneHostSessionBackend : Object, HostSessionBackend {
+	public sealed class BareboneHostSessionBackend : Object, HostSessionBackend {
 		private BareboneHostSessionProvider? provider;
 
 		private const uint16 DEFAULT_PORT = 3333;
@@ -30,7 +30,7 @@ namespace Frida {
 		}
 	}
 
-	public class BareboneHostSessionProvider : Object, HostSessionProvider {
+	public sealed class BareboneHostSessionProvider : Object, HostSessionProvider {
 		public string id {
 			get { return "barebone"; }
 		}
@@ -141,12 +141,35 @@ namespace Frida {
 			return yield this.host_session.link_agent_session (id, sink, cancellable);
 		}
 
+		public void unlink_agent_session (HostSession host_session, AgentSessionId id) {
+			if (host_session != this.host_session)
+				return;
+
+			this.host_session.unlink_agent_session (id);
+		}
+
+		public async IOStream link_channel (HostSession host_session, ChannelId id, Cancellable? cancellable)
+				throws Error, IOError {
+			throw new Error.NOT_SUPPORTED ("Channels are not supported by this backend");
+		}
+
+		public void unlink_channel (HostSession host_session, ChannelId id) {
+		}
+
+		public async ServiceSession link_service_session (HostSession host_session, ServiceSessionId id, Cancellable? cancellable)
+				throws Error, IOError {
+			throw new Error.NOT_SUPPORTED ("Services are not supported by this backend");
+		}
+
+		public void unlink_service_session (HostSession host_session, ServiceSessionId id) {
+		}
+
 		private void on_agent_session_detached (AgentSessionId id, SessionDetachReason reason, CrashInfo crash) {
 			agent_session_detached (id, reason, crash);
 		}
 	}
 
-	public class BareboneHostSession : Object, HostSession {
+	public sealed class BareboneHostSession : Object, HostSession {
 		public Barebone.Services services {
 			get;
 			construct;
@@ -260,6 +283,14 @@ namespace Frida {
 			return session;
 		}
 
+		public void unlink_agent_session (AgentSessionId id) {
+			BareboneAgentSession? session = agent_sessions[id];
+			if (session == null)
+				return;
+
+			session.message_sink = null;
+		}
+
 		public async InjectorPayloadId inject_library_file (uint pid, string path, string entrypoint, string data,
 				Cancellable? cancellable) throws Error, IOError {
 			throw_not_supported ();
@@ -270,6 +301,14 @@ namespace Frida {
 			throw_not_supported ();
 		}
 
+		public async ChannelId open_channel (string address, Cancellable? cancellable) throws Error, IOError {
+			throw new Error.NOT_SUPPORTED ("Channels are not supported by this backend");
+		}
+
+		public async ServiceSessionId open_service (string address, Cancellable? cancellable) throws Error, IOError {
+			throw new Error.NOT_SUPPORTED ("Services are not supported by this backend");
+		}
+
 		private void on_agent_session_closed (BareboneAgentSession session) {
 			AgentSessionId id = session.id;
 
@@ -282,7 +321,7 @@ namespace Frida {
 		}
 	}
 
-	private class BareboneAgentSession : Object, AgentSession {
+	private sealed class BareboneAgentSession : Object, AgentSession {
 		public signal void closed ();
 
 		public AgentSessionId id {
@@ -426,7 +465,8 @@ namespace Frida {
 
 		public async void load_script (AgentScriptId script_id, Cancellable? cancellable) throws Error, IOError {
 			check_open ();
-			get_script (script_id).load ();
+			var script = get_script (script_id);
+			yield script.load (cancellable);
 		}
 
 		public async void eternalize_script (AgentScriptId script_id, Cancellable? cancellable) throws Error, IOError {
@@ -525,7 +565,7 @@ namespace Frida {
 	}
 
 	namespace Barebone {
-		public class Services : Object {
+		public sealed class Services : Object {
 			public Machine machine {
 				get;
 				construct;

src/barebone/callback.vala

@@ -1,6 +1,6 @@
 [CCode (gir_namespace = "FridaBarebone", gir_version = "1.0")]
 namespace Frida.Barebone {
-	public class Callback : Object {
+	public sealed class Callback : Object {
 		private uint64 code;
 		private CallbackHandler handler;
 		private Machine machine;

src/barebone/generate-script-runtime.py

@@ -1,36 +0,0 @@
-from pathlib import Path
-import shutil
-import subprocess
-import sys
-
-
-def main(argv):
-    output_dir, priv_dir, input_dir, npm = [Path(d).resolve() for d in argv[1:]]
-
-    try:
-        generate_runtime(output_dir, priv_dir, input_dir, npm)
-    except Exception as e:
-        print(e, file=sys.stderr)
-        sys.exit(1)
-
-
-def generate_runtime(output_dir, priv_dir, input_dir, npm):
-    priv_dir.mkdir(exist_ok=True)
-
-    shutil.copy(input_dir / "package.json", priv_dir)
-    shutil.copy(input_dir / "package-lock.json", priv_dir)
-
-    runtime_reldir = Path("script-runtime")
-    runtime_srcdir = input_dir / runtime_reldir
-    runtime_intdir = priv_dir / runtime_reldir
-    if runtime_intdir.exists():
-        shutil.rmtree(runtime_intdir)
-    shutil.copytree(runtime_srcdir, runtime_intdir)
-
-    subprocess.run([npm, "install"], capture_output=True, cwd=priv_dir, check=True)
-
-    shutil.copy(priv_dir / "script-runtime.js", output_dir)
-
-
-if __name__ == "__main__":
-    main(sys.argv)

src/barebone/interceptor.vala

@@ -1,6 +1,6 @@
 [CCode (gir_namespace = "FridaBarebone", gir_version = "1.0")]
 namespace Frida.Barebone {
-	public class Interceptor : Object {
+	public sealed class Interceptor : Object {
 		public Machine machine {
 			get;
 			construct;

src/barebone/meson.build

@@ -29,11 +29,11 @@ barebone_script_runtime = custom_target('frida-barebone-script-runtime',
   ],
   command: [
     python,
-    files('generate-script-runtime.py'),
-    meson.current_build_dir(),
+    compile_js_agent,
+    '@OUTPUT@',
     '@PRIVATE_DIR@',
-    meson.current_source_dir(),
     npm,
+    '@INPUT@',
   ],
 )
 backend_sources += custom_target('frida-data-barebone',

src/barebone/package-lock.json

@@ -1,494 +1,503 @@
 {
-  "name": "frida-barebone-runtime",
+  "name": "frida-barebone-script-runtime",
   "version": "1.0.0",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
-      "name": "frida-barebone-runtime",
+      "name": "frida-barebone-script-runtime",
       "version": "1.0.0",
       "devDependencies": {
-        "@types/frida-gum": "^18.3.2",
-        "frida-compile": "^16.2.1"
+        "@types/frida-gum": "^19.0.0",
+        "esbuild": "^0.25.5",
+        "typescript": "^5.8.3"
       }
     },
-    "node_modules/@frida/assert": {
-      "version": "3.0.2",
-      "resolved": "https://registry.npmjs.org/@frida/assert/-/assert-3.0.2.tgz",
-      "integrity": "sha512-JXJq5SbXGrM5EkjrZKfRmB29zOoEOix02NC6A5TSJ+C1GE/X051EinJJsuOO2pEOx7KZwpvAHvS0WXW0+levKg==",
-      "dev": true
-    },
-    "node_modules/@frida/base64-js": {
-      "version": "2.0.3",
-      "resolved": "https://registry.npmjs.org/@frida/base64-js/-/base64-js-2.0.3.tgz",
-      "integrity": "sha512-2w0F+1TynOTCZ/v7du9LdHPWwq0lJhazjo2fF9upMyQmA1zHetT14fLuQ1v/6T0qPgyeEGkiSrybstU8EsgeUA==",
-      "dev": true,
-      "funding": [
-        {
-          "type": "github",
-          "url": "https://github.com/sponsors/feross"
-        },
-        {
-          "type": "patreon",
-          "url": "https://www.patreon.com/feross"
-        },
-        {
-          "type": "consulting",
-          "url": "https://feross.org/support"
-        }
-      ]
-    },
-    "node_modules/@frida/buffer": {
-      "version": "7.0.4",
-      "resolved": "https://registry.npmjs.org/@frida/buffer/-/buffer-7.0.4.tgz",
-      "integrity": "sha512-RxQ1lZRRiCJj7nhcCiD8xeJx0NsLpGGnjqsmTg7jShGmbnVFMN5W7+J+3gqdPSQhc/IxNBIWc6zRXVp4+qnYHg==",
-      "dev": true,
-      "funding": [
-        {
-          "type": "github",
-          "url": "https://github.com/sponsors/feross"
-        },
-        {
-          "type": "patreon",
-          "url": "https://www.patreon.com/feross"
-        },
-        {
-          "type": "consulting",
-          "url": "https://feross.org/support"
-        }
+    "node_modules/@esbuild/aix-ppc64": {
+      "version": "0.25.5",
+      "resolved": "https://registry.npmjs.org/@esbuild/aix-ppc64/-/aix-ppc64-0.25.5.tgz",
+      "integrity": "sha512-9o3TMmpmftaCMepOdA5k/yDw8SfInyzWWTjYTFCX3kPSDJMROQTb8jg+h9Cnwnmm1vOzvxN7gIfB5V2ewpjtGA==",
+      "cpu": [
+        "ppc64"
       ],
-      "dependencies": {
-        "base64-js": "^1.5.1",
-        "ieee754": "^1.2.1"
-      }
-    },
-    "node_modules/@frida/crosspath": {
-      "version": "3.0.0",
-      "resolved": "https://registry.npmjs.org/@frida/crosspath/-/crosspath-3.0.0.tgz",
-      "integrity": "sha512-bNdO1spIPD2P40XtK89N49oZpJhstdlnkJZcD4yJ17jrdkm9Ctu0sd9MIEX6Z8Tm8ydhVJBAOMEKl9/R27onAQ==",
       "dev": true,
-      "dependencies": {
-        "@types/node": "^17.0.36"
-      },
+      "license": "MIT",
+      "optional": true,
+      "os": [
+        "aix"
+      ],
       "engines": {
-        "node": ">=14.9.0"
+        "node": ">=18"
       }
     },
-    "node_modules/@frida/diagnostics_channel": {
-      "version": "1.0.0",
-      "resolved": "https://registry.npmjs.org/@frida/diagnostics_channel/-/diagnostics_channel-1.0.0.tgz",
-      "integrity": "sha512-mYX1jp/5Bpk24tHArJNx65iCk7qSuV8YJkdU0gFNVtJUXxfV8BG5WuPa4mL+ynxsbWWpsg/cwKZbLAepYKTdQQ==",
-      "dev": true
-    },
-    "node_modules/@frida/events": {
-      "version": "4.0.4",
-      "resolved": "https://registry.npmjs.org/@frida/events/-/events-4.0.4.tgz",
-      "integrity": "sha512-qJVQ6VWHf9sjUKuiJzoCAC00frbpcwxeYfvQ+PP9LU/d70j+QvjWgYe98Qa3ekLaBU6r/AvWm8ThKCDUCLWrQQ==",
+    "node_modules/@esbuild/android-arm": {
+      "version": "0.25.5",
+      "resolved": "https://registry.npmjs.org/@esbuild/android-arm/-/android-arm-0.25.5.tgz",
+      "integrity": "sha512-AdJKSPeEHgi7/ZhuIPtcQKr5RQdo6OO2IL87JkianiMYMPbCtot9fxPbrMiBADOWWm3T2si9stAiVsGbTQFkbA==",
+      "cpu": [
+        "arm"
+      ],
       "dev": true,
+      "license": "MIT",
+      "optional": true,
+      "os": [
+        "android"
+      ],
       "engines": {
-        "node": ">=0.8.x"
+        "node": ">=18"
       }
     },
-    "node_modules/@frida/http": {
-      "version": "4.0.2",
-      "resolved": "https://registry.npmjs.org/@frida/http/-/http-4.0.2.tgz",
-      "integrity": "sha512-cvkc7ex7GmVXVOWqtjXKBWUUbYEBgpNRKZbEEoMeI8KiIs8zejKwg+N7rx7296Ao+EP3+xcUr4wBVr3xLaUVfQ==",
+    "node_modules/@esbuild/android-arm64": {
+      "version": "0.25.5",
+      "resolved": "https://registry.npmjs.org/@esbuild/android-arm64/-/android-arm64-0.25.5.tgz",
+      "integrity": "sha512-VGzGhj4lJO+TVGV1v8ntCZWJktV7SGCs3Pn1GRWI1SBFtRALoomm8k5E9Pmwg3HOAal2VDc2F9+PM/rEY6oIDg==",
+      "cpu": [
+        "arm64"
+      ],
       "dev": true,
-      "dependencies": {
-        "http-parser-js": "^0.5.3"
-      }
-    },
-    "node_modules/@frida/http-parser-js": {
-      "version": "1.0.0",
-      "resolved": "https://registry.npmjs.org/@frida/http-parser-js/-/http-parser-js-1.0.0.tgz",
-      "integrity": "sha512-2nMrNXt/OeTlWbqnE8AH4Sfz4I2+BGoN206dzKEyC/g2svtn83Xu+zuv/V3TkwrA27s26Mcy84ZwsXeNlqNxUQ==",
-      "dev": true
-    },
-    "node_modules/@frida/https": {
-      "version": "1.0.0",
-      "resolved": "https://registry.npmjs.org/@frida/https/-/https-1.0.0.tgz",
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+      "resolved": "https://registry.npmjs.org/@types/frida-gum/-/frida-gum-19.0.0.tgz",
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       "dev": true,
+      "license": "MIT"
+    },
+    "node_modules/esbuild": {
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+      "resolved": "https://registry.npmjs.org/esbuild/-/esbuild-0.25.5.tgz",
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+      "dev": true,
+      "hasInstallScript": true,
+      "license": "MIT",
       "bin": {
-        "acorn": "bin/acorn"
+        "esbuild": "bin/esbuild"
       },
       "engines": {
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-    "node_modules/base64-js": {
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-          "type": "github",
-          "url": "https://github.com/sponsors/feross"
-        },
-        {
-          "type": "patreon",
-          "url": "https://www.patreon.com/feross"
-        },
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-      "dev": true,
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-      }
-    },
-    "node_modules/frida-compile": {
-      "version": "16.2.1",
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-      "dev": true,
-      "dependencies": {
-        "@frida/assert": "^3.0.1",
-        "@frida/base64-js": "^2.0.3",
-        "@frida/buffer": "^7.0.4",
-        "@frida/crosspath": "^3.0.0",
-        "@frida/diagnostics_channel": "^1.0.0",
-        "@frida/events": "^4.0.4",
-        "@frida/http": "^4.0.2",
-        "@frida/http-parser-js": "^1.0.0",
-        "@frida/https": "^1.0.0",
-        "@frida/ieee754": "^2.0.2",
-        "@frida/net": "^4.0.1",
-        "@frida/os": "^1.0.0",
-        "@frida/path": "^2.0.3",
-        "@frida/process": "^1.2.1",
-        "@frida/punycode": "^3.0.0",
-        "@frida/querystring": "^1.0.0",
-        "@frida/readable-stream": "^4.1.3",
-        "@frida/reserved-words": "^1.0.0",
-        "@frida/stream": "^1.0.2",
-        "@frida/string_decoder": "^2.0.0",
-        "@frida/terser": "^1.0.0",
-        "@frida/timers": "^3.0.0",
-        "@frida/tty": "^1.0.0",
-        "@frida/url": "^1.0.2",
-        "@frida/util": "^1.0.3",
-        "@frida/vm": "^2.0.0",
-        "commander": "^9.4.0",
-        "frida-fs": "^5.2.3",
-        "typed-emitter": "^2.1.0"
+        "node": ">=18"
       },
-      "bin": {
-        "frida-compile": "dist/cli.js"
-      }
-    },
-    "node_modules/frida-fs": {
-      "version": "5.2.3",
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-          "url": "https://github.com/sponsors/feross"
-        },
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-          "url": "https://www.patreon.com/feross"
-        },
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-      "resolved": "https://registry.npmjs.org/typed-emitter/-/typed-emitter-2.1.0.tgz",
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-      "dev": true,
       "optionalDependencies": {
-        "rxjs": "*"
+        "@esbuild/aix-ppc64": "0.25.5",
+        "@esbuild/android-arm": "0.25.5",
+        "@esbuild/android-arm64": "0.25.5",
+        "@esbuild/android-x64": "0.25.5",
+        "@esbuild/darwin-arm64": "0.25.5",
+        "@esbuild/darwin-x64": "0.25.5",
+        "@esbuild/freebsd-arm64": "0.25.5",
+        "@esbuild/freebsd-x64": "0.25.5",
+        "@esbuild/linux-arm": "0.25.5",
+        "@esbuild/linux-arm64": "0.25.5",
+        "@esbuild/linux-ia32": "0.25.5",
+        "@esbuild/linux-loong64": "0.25.5",
+        "@esbuild/linux-mips64el": "0.25.5",
+        "@esbuild/linux-ppc64": "0.25.5",
+        "@esbuild/linux-riscv64": "0.25.5",
+        "@esbuild/linux-s390x": "0.25.5",
+        "@esbuild/linux-x64": "0.25.5",
+        "@esbuild/netbsd-arm64": "0.25.5",
+        "@esbuild/netbsd-x64": "0.25.5",
+        "@esbuild/openbsd-arm64": "0.25.5",
+        "@esbuild/openbsd-x64": "0.25.5",
+        "@esbuild/sunos-x64": "0.25.5",
+        "@esbuild/win32-arm64": "0.25.5",
+        "@esbuild/win32-ia32": "0.25.5",
+        "@esbuild/win32-x64": "0.25.5"
+      }
+    },
+    "node_modules/typescript": {
+      "version": "5.8.3",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-5.8.3.tgz",
+      "integrity": "sha512-p1diW6TqL9L07nNxvRMM7hMMw4c5XOo/1ibL4aAIGmSAt9slTE1Xgw5KWuof2uTOvCg9BY7ZRi+GaF+7sfgPeQ==",
+      "dev": true,
+      "license": "Apache-2.0",
+      "bin": {
+        "tsc": "bin/tsc",
+        "tsserver": "bin/tsserver"
+      },
+      "engines": {
+        "node": ">=14.17"
       }
     }
   }

src/barebone/package.json

@@ -2,12 +2,15 @@
   "name": "frida-barebone-script-runtime",
   "version": "1.0.0",
   "description": "Script runtime used by Frida's Barebone backend",
+  "type": "module",
   "scripts": {
-    "prepare": "npm run build",
-    "build": "frida-compile script-runtime/entrypoint.ts -o script-runtime.js -c"
+    "build": "esbuild script-runtime/entrypoint.ts --outfile=script-runtime.js --bundle --platform=node --target=es2022 --minify",
+    "check": "tsc",
+    "watch": "tsc -w"
   },
   "devDependencies": {
-    "@types/frida-gum": "^18.3.2",
-    "frida-compile": "^16.2.1"
+    "@types/frida-gum": "^19.0.0",
+    "esbuild": "^0.25.5",
+    "typescript": "^5.8.3"
   }
 }

src/barebone/rust-module.vala

@@ -1,6 +1,6 @@
 [CCode (gir_namespace = "FridaBarebone", gir_version = "1.0")]
 namespace Frida.Barebone {
-	private class RustModule : Object {
+	private sealed class RustModule : Object {
 		public signal void console_output (string message);
 
 		public Gee.List<Export> exports {
@@ -208,7 +208,10 @@ namespace Frida.Barebone {
 			}
 
 			~CompilationAssets () {
-				rmtree (workdir);
+				try {
+					FS.rmtree (workdir);
+				} catch (Error e) {
+				}
 			}
 
 			private static string make_main_rs (string code, Machine machine) {
@@ -428,23 +431,4 @@ namespace Frida.Barebone {
 		yield file.replace_contents_async (content.data, null, false, FileCreateFlags.NONE, cancellable, null);
 		return file;
 	}
-
-	private void rmtree (File dir) {
-		try {
-			var enumerator = dir.enumerate_children (FileAttribute.STANDARD_NAME, NOFOLLOW_SYMLINKS);
-			FileInfo? info;
-			File? child;
-			while (enumerator.iterate (out info, out child) && info != null) {
-				if (info == null)
-					continue;
-				if (info.get_file_type () == DIRECTORY)
-					rmtree (child);
-				else
-					child.delete ();
-			}
-
-			dir.delete ();
-		} catch (GLib.Error e) {
-		}
-	}
 }

src/barebone/script-runtime/entrypoint.ts

@@ -210,24 +210,6 @@ Object.defineProperties(globalThis, {
             }
         }
     },
-    ObjC: {
-        enumerable: true,
-        value: {
-            available: false
-        }
-    },
-    Swift: {
-        enumerable: true,
-        value: {
-            available: false
-        }
-    },
-    Java: {
-        enumerable: true,
-        value: {
-            available: false
-        }
-    },
     console: {
         enumerable: true,
         value: new Console()
@@ -278,6 +260,8 @@ Object.defineProperties(Process, {
                     base: NULL,
                     size: 0x1000,
                     path: "/kernel",
+                    ensureInitialized() {
+                    },
                     enumerateImports() {
                         return [];
                     },
@@ -290,11 +274,23 @@ Object.defineProperties(Process, {
                     enumerateRanges() {
                         return [];
                     },
+                    enumerateSections() {
+                        return [];
+                    },
+                    enumerateDependencies() {
+                        return [];
+                    },
                     findExportByName() {
                         return null;
                     },
-                    getExportByName(exportName) {
-                        throw new Error(`unable to find export '${exportName}'`);
+                    getExportByName(name) {
+                        throw new Error(`unable to find export '${name}'`);
+                    },
+                    findSymbolByName() {
+                        return null;
+                    },
+                    getSymbolByName(name) {
+                        throw new Error(`unable to find symbol '${name}'`);
                     }
                 }
             ];

src/barebone/script.vala

@@ -1,5 +1,5 @@
 namespace Frida {
-	private class BareboneScript : Object {
+	private sealed class BareboneScript : Object {
 		public signal void message (string json, Bytes? data);
 
 		public AgentScriptId id {
@@ -72,7 +72,7 @@ namespace Frida {
 		private QuickJS.Value int64_func = QuickJS.Undefined;
 		private QuickJS.Value uint64_func = QuickJS.Undefined;
 
-		private Gee.ArrayList<QuickJS.Value?> entrypoints = new Gee.ArrayList<QuickJS.Value?> ();
+		private Gee.Queue<Entrypoint> entrypoints = new Gee.ArrayQueue<Entrypoint> ();
 		private Gee.Map<string, Asset> assets = new Gee.HashMap<string, Asset> ();
 
 		private Cancellable io_cancellable = new Cancellable ();
@@ -328,6 +328,8 @@ namespace Frida {
 			foreach (var val in values)
 				ctx.free_value (val);
 
+			entrypoints.clear ();
+
 			QuickJS.Atom atoms[] = {
 				address_key,
 				base_key,
@@ -376,48 +378,65 @@ namespace Frida {
 			yield;
 		}
 
-		public void load () {
-			foreach (QuickJS.Value? entrypoint in entrypoints) {
-				var result = ctx.eval_function (entrypoint);
-				if (result.is_exception ())
+		public async void load (Cancellable? cancellable) throws IOError {
+			Entrypoint? entrypoint;
+			while ((entrypoint = entrypoints.poll ()) != null) {
+				var result = ctx.eval_function (ctx.dup_value (entrypoint.callable));
+				if (result.is_exception ()) {
 					catch_and_emit ();
-				ctx.free_value (result);
-
-				if (runtime_obj.is_undefined ()) {
-					runtime_obj = global.get_property_str (ctx, "$rt");
-					if (!runtime_obj.is_undefined ()) {
-						dispatch_exception_func = runtime_obj.get_property_str (ctx, "dispatchException");
-						assert (!dispatch_exception_func.is_undefined ());
-
-						dispatch_message_func = runtime_obj.get_property_str (ctx, "dispatchMessage");
-						assert (!dispatch_message_func.is_undefined ());
-
-						var native_pointer_instance = global.get_property_str (ctx, "NULL");
-						assert (!native_pointer_instance.is_undefined ());
-						var native_pointer_proto = native_pointer_instance.get_prototype (ctx);
-
-						var ir_proto = ctx.make_object_proto (native_pointer_proto);
-						add_cfunc (ir_proto, "replace", on_invocation_retval_replace, 1);
-						ctx.set_class_proto (invocation_retval_class, ir_proto);
-
-						ctx.free_value (native_pointer_proto);
-						ctx.free_value (native_pointer_instance);
-
-						ptr_func = global.get_property_str (ctx, "ptr");
-						assert (!ptr_func.is_undefined ());
-
-						int64_func = global.get_property_str (ctx, "int64");
-						assert (!int64_func.is_undefined ());
-
-						uint64_func = global.get_property_str (ctx, "uint64");
-						assert (!uint64_func.is_undefined ());
-					}
+					continue;
 				}
+
+				if (entrypoint.kind == ESM) {
+					var op = new PromiseWaitOperation (this, result);
+					var r = yield op.perform (cancellable);
+					if (!r.error.is_null ())
+						on_unhandled_exception (r.error);
+				} else {
+					ctx.free_value (result);
+				}
+
+				maybe_bind_runtime ();
 			}
 
 			perform_pending_io ();
 		}
 
+		private void maybe_bind_runtime () {
+			if (!runtime_obj.is_undefined ())
+				return;
+
+			runtime_obj = global.get_property_str (ctx, "$rt");
+			if (runtime_obj.is_undefined ())
+				return;
+
+			dispatch_exception_func = runtime_obj.get_property_str (ctx, "dispatchException");
+			assert (!dispatch_exception_func.is_undefined ());
+
+			dispatch_message_func = runtime_obj.get_property_str (ctx, "dispatchMessage");
+			assert (!dispatch_message_func.is_undefined ());
+
+			var native_pointer_instance = global.get_property_str (ctx, "NULL");
+			assert (!native_pointer_instance.is_undefined ());
+			var native_pointer_proto = native_pointer_instance.get_prototype (ctx);
+
+			var ir_proto = ctx.make_object_proto (native_pointer_proto);
+			add_cfunc (ir_proto, "replace", on_invocation_retval_replace, 1);
+			ctx.set_class_proto (invocation_retval_class, ir_proto);
+
+			ctx.free_value (native_pointer_proto);
+			ctx.free_value (native_pointer_instance);
+
+			ptr_func = global.get_property_str (ctx, "ptr");
+			assert (!ptr_func.is_undefined ());
+
+			int64_func = global.get_property_str (ctx, "int64");
+			assert (!int64_func.is_undefined ());
+
+			uint64_func = global.get_property_str (ctx, "uint64");
+			assert (!uint64_func.is_undefined ());
+		}
+
 		public void post (string json, Bytes? data) {
 			var json_val = ctx.make_string (json);
 			var data_val = (data != null) ? ctx.make_array_buffer (data.get_data ()) : QuickJS.Null;
@@ -495,7 +514,7 @@ namespace Frida {
 						throw_malformed_package ();
 
 					var val = compile_module (entrypoint);
-					entrypoints.add (val);
+					entrypoints.offer (new Entrypoint (this, val, ESM));
 
 					string rest = raw_assets[assets_offset:];
 					if (rest.has_prefix (delimiter_marker))
@@ -507,7 +526,7 @@ namespace Frida {
 				}
 			} else {
 				var val = compile_script (source, name);
-				entrypoints.add (val);
+				entrypoints.offer (new Entrypoint (this, val, PLAIN));
 			}
 		}
 
@@ -708,6 +727,111 @@ namespace Frida {
 			}
 		}
 
+		private class Entrypoint {
+			private weak BareboneScript script;
+			public QuickJS.Value callable;
+			public Kind kind;
+
+			public enum Kind {
+				PLAIN,
+				ESM
+			}
+
+			public Entrypoint (BareboneScript script, QuickJS.Value callable, Kind kind) {
+				this.script = script;
+				this.callable = callable;
+				this.kind = kind;
+			}
+
+			~Entrypoint () {
+				script.ctx.free_value (callable);
+			}
+		}
+
+		private class PromiseWaitOperation {
+			private BareboneScript script;
+			private QuickJS.Value promise;
+
+			private enum Magic {
+				ON_SUCCESS,
+				ON_FAILURE,
+			}
+
+			public PromiseWaitOperation (BareboneScript script, QuickJS.Value promise) {
+				this.script = script;
+				this.promise = promise;
+			}
+
+			~PromiseWaitOperation () {
+				script.ctx.free_value (promise);
+			}
+
+			public async Result perform (Cancellable? cancellable) throws IOError {
+				var res = new Result (script, perform.callback);
+
+				unowned QuickJS.Context ctx = script.ctx;
+
+				var data = ctx.make_object ();
+				data.set_opaque (res);
+
+				var on_success = ctx.make_cfunction_data (on_settled, 1, Magic.ON_SUCCESS, { data });
+				var on_failure = ctx.make_cfunction_data (on_settled, 1, Magic.ON_FAILURE, { data });
+
+				var then_func = promise.get_property_str (ctx, "then");
+				var catch_func = promise.get_property_str (ctx, "catch");
+
+				ctx.free_value (then_func.call (ctx, promise, { on_success }));
+				ctx.free_value (catch_func.call (ctx, promise, { on_failure }));
+
+				ctx.free_value (catch_func);
+				ctx.free_value (then_func);
+
+				ctx.free_value (on_failure);
+				ctx.free_value (on_success);
+
+				script.perform_pending_io ();
+				yield;
+
+				return res;
+			}
+
+			private static QuickJS.Value on_settled (QuickJS.Context ctx, QuickJS.Value this_val, QuickJS.Value[] argv, int magic,
+					QuickJS.Value[] data) {
+				QuickJS.ClassID cid;
+				unowned Result res = (Result) data[0].get_any_opaque (out cid);
+
+				if (magic == Magic.ON_SUCCESS)
+					res.val = ctx.dup_value (argv[0]);
+				else
+					res.error = ctx.dup_value (argv[0]);
+
+				var source = new IdleSource ();
+				source.set_callback ((owned) res.on_complete);
+				source.attach (MainContext.get_thread_default ());
+
+				return QuickJS.Undefined;
+			}
+
+			public class Result {
+				public BareboneScript script;
+				public SourceFunc on_complete;
+
+				public QuickJS.Value val = QuickJS.Null;
+				public QuickJS.Value error = QuickJS.Null;
+
+				public Result (BareboneScript script, owned SourceFunc on_complete) {
+					this.script = script;
+					this.on_complete = (owned) on_complete;
+				}
+
+				~Result () {
+					unowned QuickJS.Context ctx = script.ctx;
+					ctx.free_value (val);
+					ctx.free_value (error);
+				}
+			}
+		}
+
 		private class NativeCallbackHandler : Object, Barebone.CallbackHandler {
 			public uint arity {
 				get { return _arity; }

src/barebone/tsconfig.json

@@ -0,0 +1,10 @@
+{
+  "compilerOptions": {
+    "target": "ES2022",
+    "lib": ["ES2022"],
+    "module": "Node16",
+    "strict": true,
+    "noEmit": true
+  },
+  "include": ["script-runtime/**/*.ts"]
+}

src/compiler/agent-core.ts

@@ -1,469 +0,0 @@
-import * as crosspath from "@frida/crosspath";
-import type * as backend from "frida-compile";
-import {
-    makeDefaultCompilerOptions,
-    build as _build,
-    watch as _watch,
-    queryDefaultAssets as _queryDefaultAssets,
-} from "frida-compile";
-import ts from "frida-compile/ext/typescript.js";
-import fridaFs from "frida-fs";
-import fs from "fs";
-
-const { DiagnosticCategory, FileWatcherEventKind } = ts;
-
-const { S_IFDIR } = fs.constants;
-
-export const compilerRoot = "/frida-compile";
-export const compilerNodeModules = compilerRoot + "/node_modules";
-
-export const agentDirectories = new Set<string>(__agentDirectories__);
-export const agentFiles = new Map<string, string>(__agentFiles__);
-const cachedSourceFiles = new Map<string, ts.SourceFile>();
-
-declare const __agentDirectories__: string[];
-declare const __agentFiles__: [string, string][];
-
-const pendingDiagnostics: ts.Diagnostic[] = [];
-
-const fileWatchers = new Map<WatcherId, WatcherCallback>();
-let nextWatcherId: WatcherId = 1;
-
-populateSourceFileCache();
-
-function populateSourceFileCache() {
-    const config = makeDefaultCompilerOptions();
-    for (const [name, contents] of agentFiles) {
-        if (name.endsWith(".d.ts")) {
-            const sf = ts.createSourceFile(name, contents, config.target!);
-            ts.prebindSourceFile(sf, config);
-            cachedSourceFiles.set(name, sf);
-        }
-    }
-}
-
-export function init(): void {
-    function onChange(message: WatchChangeMessage): void {
-        const callback = fileWatchers.get(message.id);
-        callback?.(fileWatcherEventKindFromFileState(message.state));
-
-        recv("watch:change", onChange);
-    }
-    recv("watch:change", onChange);
-
-    const origCreateCompilerHostFromProgramHost = (ts as any).createCompilerHostFromProgramHost;
-    (ts as any).createCompilerHostFromProgramHost = (...args: any[]): ts.CompilerHost => {
-        const host = origCreateCompilerHostFromProgramHost(...args);
-        patchCompilerHost(host);
-        return host;
-    };
-}
-
-export function build(projectRoot: string, entrypoint: string, sourceMaps: backend.SourceMaps, compression: backend.Compression): string {
-    const system = new FridaSystem(projectRoot);
-    const assets = _queryDefaultAssets(projectRoot, system);
-
-    try {
-        return _build({
-            projectRoot,
-            entrypoint,
-            assets,
-            system,
-            sourceMaps,
-            compression,
-            onDiagnostic,
-            onCompilerHostCreated: patchCompilerHost,
-        });
-    } finally {
-        flushDiagnostics();
-    }
-}
-
-export function watch(projectRoot: string, entrypoint: string, sourceMaps: backend.SourceMaps, compression: backend.Compression): void {
-    const system = new FridaSystem(projectRoot);
-    const assets = _queryDefaultAssets(projectRoot, system);
-    _watch({
-        projectRoot,
-        entrypoint,
-        assets,
-        system,
-        sourceMaps,
-        compression,
-        onDiagnostic,
-    })
-        .on("compilationStarting", () => {
-            send(["watch:compilation-starting"]);
-        })
-        .on("compilationFinished", () => {
-            send(["watch:compilation-finished"]);
-        })
-        .on("bundleUpdated", bundle => {
-            send(["watch:bundle-updated", bundle]);
-        });
-}
-
-function patchCompilerHost(host: ts.CompilerHost) {
-    const origGetSourceFile = host.getSourceFile;
-    host.getSourceFile = (fileName, ...args) => {
-        const compilerPath = nativePathToCompilerPath(fileName);
-        if (compilerPath !== null) {
-            const sf = cachedSourceFiles.get(compilerPath);
-            if (sf !== undefined) {
-                return sf;
-            }
-        } else {
-            const startPos = fileName.indexOf("/node_modules/@types/");
-            if (startPos !== -1) {
-                const builtinsPath = fileName.substring(startPos);
-                const sf = cachedSourceFiles.get(builtinsPath);
-                if (sf !== undefined) {
-                    let allowCache = true;
-
-                    if (builtinsPath.startsWith("/node_modules/@types/frida-gum/")) {
-                        try {
-                            const hashOnDisk = Checksum.compute("sha256", File.readAllText(fileName));
-                            const hashInCache = Checksum.compute("sha256", agentFiles.get(sf.fileName)!);
-                            allowCache = hashOnDisk === hashInCache;
-                        } catch (e) {
-                        }
-                    }
-
-                    if (allowCache) {
-                        return sf;
-                    }
-                }
-            }
-        }
-
-        return origGetSourceFile(fileName, ...args);
-    };
-}
-
-export { _build, _watch, _queryDefaultAssets };
-
-type DiagnosticFile = [path: string, line: number, character: number];
-
-function onDiagnostic(diagnostic: ts.Diagnostic): void {
-    pendingDiagnostics.push(diagnostic);
-    if (pendingDiagnostics.length === 1) {
-        Script.nextTick(flushDiagnostics);
-    }
-}
-
-function flushDiagnostics(): void {
-    const pending = pendingDiagnostics.splice(0, pendingDiagnostics.length);
-    if (pending.length === 0) {
-        return;
-    }
-
-    send([
-        "diagnostics",
-        pending.map(({
-            category,
-            code,
-            file: tsFile,
-            start,
-            messageText
-        }) => {
-            let file: DiagnosticFile | null = null;
-            if (tsFile !== undefined) {
-                const { line, character } = ts.getLineAndCharacterOfPosition(tsFile, start!);
-                file = [tsFile.fileName, line, character];
-            }
-            return [
-                diagnosticCategoryToString(category),
-                code,
-                file,
-                ts.flattenDiagnosticMessageText(messageText, "\n")
-            ];
-        }),
-    ]);
-}
-
-function diagnosticCategoryToString(category: ts.DiagnosticCategory): string {
-    switch (category) {
-        case DiagnosticCategory.Warning:
-            return "warning";
-        case DiagnosticCategory.Error:
-            return "error";
-        case DiagnosticCategory.Suggestion:
-            return "suggestion";
-        case DiagnosticCategory.Message:
-            return "message";
-    }
-}
-
-class FridaSystem implements ts.System {
-    args = [];
-    newLine = "\n";
-    useCaseSensitiveFileNames = true;
-
-    #projectRoot: string;
-    #projectNodeModules: string;
-
-    constructor(projectRoot: string) {
-        this.#projectRoot = crosspath.ensurePosix(projectRoot);
-        this.#projectNodeModules = crosspath.join(this.#projectRoot, "node_modules");
-    }
-
-    write(s: string): void {
-    }
-
-    writeOutputIsTTY(): boolean {
-        return true;
-    }
-
-    readFile(path: string, encoding?: string): string | undefined {
-        let result: string | undefined;
-        if (path.startsWith(this.#projectRoot)) {
-            try {
-                result = File.readAllText(path);
-            } catch (e) {
-            }
-        }
-
-        if (result === undefined) {
-            const agentZipPath = this.#nativePathToAgentZipPath(path);
-            if (agentZipPath !== null) {
-                result = agentFiles.get(agentZipPath);
-            }
-        }
-
-        return result;
-    }
-
-    getFileSize(path: string): number {
-        throw new Error("not implemented");
-    }
-
-    writeFile(path: string, data: string, writeByteOrderMark?: boolean): void {
-        File.writeAllText(path, data);
-    }
-
-    watchFile(path: string, callback: ts.FileWatcherCallback, pollingInterval?: number, options?: ts.WatchOptions): ts.FileWatcher {
-        if (path.startsWith(compilerRoot)) {
-            return makeDummyWatcher();
-        }
-
-        return makeFileWatcher(path, "file", pollingInterval ?? 0, kind => {
-            callback(path, kind);
-        });
-    }
-
-    watchDirectory(path: string, callback: ts.DirectoryWatcherCallback, recursive?: boolean, options?: ts.WatchOptions): ts.FileWatcher {
-        if (path.startsWith(compilerRoot)) {
-            return makeDummyWatcher();
-        }
-
-        return makeFileWatcher(path, "directory", 0, kind => {
-            callback(path);
-        });
-    }
-
-    resolvePath(path: string): string {
-        return path;
-    }
-
-    fileExists(path: string): boolean {
-        if (path.startsWith(this.#projectRoot)) {
-            try {
-                const st = fs.statSync(path);
-                return !st.isDirectory();
-            } catch (e) {
-            }
-        }
-
-        const agentZipPath = this.#nativePathToAgentZipPath(path);
-        if (agentZipPath === null) {
-            return false;
-        }
-        return agentFiles.has(agentZipPath);
-    }
-
-    directoryExists(path: string): boolean {
-        if (path === compilerNodeModules) {
-            return true;
-        }
-
-        if (path.startsWith(this.#projectRoot)) {
-            try {
-                const st = fs.statSync(path);
-                return st.isDirectory();
-            } catch (e) {
-            }
-        }
-
-        const agentZipPath = this.#nativePathToAgentZipPath(path);
-        if (agentZipPath === null) {
-            return false;
-        }
-        return agentDirectories.has(agentZipPath);
-    }
-
-    createDirectory(path: string): void {
-        throw new Error("not implemented");
-    }
-
-    getExecutingFilePath(): string {
-        return [compilerRoot, "ext", "typescript.js"].join("/");
-    }
-
-    getCurrentDirectory(): string {
-        return this.#projectRoot;
-    }
-
-    getDirectories(path: string): string[] {
-        const result = new Set<string>();
-
-        if (path.startsWith(this.#projectRoot)) {
-            try {
-                for (const entry of fridaFs.list(path).filter(entry => entry.type === S_IFDIR)) {
-                    result.add(entry.name);
-                }
-            } catch (e) {
-            }
-        }
-
-        const agentZipPath = this.#nativePathToAgentZipPath(path);
-        if (agentZipPath !== null) {
-            for (const dir of agentDirectories) {
-                const slashIndex = dir.lastIndexOf("/");
-                const parent = dir.substring(0, slashIndex);
-                if (parent === agentZipPath) {
-                    const basename = dir.substring(slashIndex + 1);
-                    result.add(basename);
-                }
-            }
-        }
-
-        return Array.from(result);
-    }
-
-    readDirectory(path: string, extensions?: readonly string[], exclude?: readonly string[], include?: readonly string[], depth?: number): string[] {
-        return [];
-    }
-
-    getModifiedTime(path: string): Date | undefined {
-        return undefined;
-    }
-
-    setModifiedTime(path: string, time: Date): void {
-    }
-
-    deleteFile(path: string): void {
-    }
-
-    createHash(data: string): string {
-        return this.createSHA256Hash(data);
-    }
-
-    createSHA256Hash(data: string): string {
-        return Checksum.compute("sha256", data);
-    }
-
-    getMemoryUsage(): number {
-        return Frida.heapSize;
-    }
-
-    exit(exitCode?: number): void {
-    }
-
-    realpath(path: string): string {
-        return path;
-    }
-
-    getEnvironmentVariable(name: string): string {
-        return "";
-    }
-
-    setTimeout(callback: (...args: any[]) => void, ms: number, ...args: any[]): any {
-        return setTimeout(callback);
-    }
-
-    clearTimeout(timeoutId: any): void {
-        return clearTimeout(timeoutId);
-    }
-
-    clearScreen(): void {
-    }
-
-    base64decode(input: string): string {
-        throw new Error("not implemented");
-    }
-
-    base64encode(input: string): string {
-        throw new Error("not implemented");
-    }
-
-    #nativePathToAgentZipPath(path: string): string | null {
-        const compilerPath = nativePathToCompilerPath(path);
-        if (compilerPath !== null) {
-            return compilerPath;
-        }
-
-        if (path.startsWith(this.#projectNodeModules)) {
-            return "/node_modules" + path.substring(this.#projectNodeModules.length);
-        }
-
-        return null;
-    }
-}
-
-function nativePathToCompilerPath(path: string): string | null {
-    if (!path.startsWith(compilerRoot)) {
-        return null;
-    }
-
-    const subPath = path.substring(compilerRoot.length);
-    if (subPath.startsWith("/node_modules")) {
-        return subPath;
-    }
-
-    return "/node_modules/frida-compile" + subPath;
-}
-
-type WatcherId = number;
-type WatcherCallback = (eventKind: ts.FileWatcherEventKind) => void;
-type FileState = "pristine" | "modified" | "deleted";
-
-interface WatchChangeMessage {
-    id: WatcherId;
-    state: FileState;
-}
-
-function makeFileWatcher(path: string, type: "file" | "directory", pollingInterval: number, callback: WatcherCallback): ts.FileWatcher {
-    if (nextWatcherId === 0xffffffff) {
-        nextWatcherId = 1;
-    }
-    let id: WatcherId = nextWatcherId++;
-    while (fileWatchers.has(id)) {
-        id = nextWatcherId++;
-    }
-
-    fileWatchers.set(id, callback);
-
-    send(["watch:add", id, path, type, pollingInterval ?? 0]);
-
-    return {
-        close() {
-            send(["watch:remove", id]);
-
-            fileWatchers.delete(id);
-        }
-    };
-}
-
-function makeDummyWatcher(): ts.FileWatcher {
-    return {
-        close() {
-        }
-    };
-}
-
-function fileWatcherEventKindFromFileState(state: FileState): ts.FileWatcherEventKind {
-    switch (state) {
-        case "pristine": return FileWatcherEventKind.Created;
-        case "modified": return FileWatcherEventKind.Changed;
-        case "deleted": return FileWatcherEventKind.Deleted;
-    }
-}

src/compiler/agent-entrypoint.js

@@ -1,5 +0,0 @@
-const { init, build, watch } = FridaCompilerAgentCore;
-
-init();
-
-rpc.exports = { build, watch };

src/compiler/agent-warmup.js

@@ -1,222 +0,0 @@
-const {
-  compilerRoot,
-  compilerNodeModules,
-  agentDirectories,
-  agentFiles,
-  _build,
-  _queryDefaultAssets,
-} = FridaCompilerAgentCore;
-
-const projectRoot = '/agent';
-const projectNodeModules = '/agent/node_modules';
-const entrypoint = 'index.ts';
-const sourceMaps = 'included';
-const compression = 'none';
-
-const hashes = new Map();
-let nextHashId = 1;
-
-function main() {
-  const system = new StubSystem();
-  const assets = _queryDefaultAssets(projectRoot, system);
-  _build({
-    projectRoot,
-    entrypoint,
-    assets,
-    system,
-    sourceMaps,
-    compression,
-    onDiagnostic,
-  });
-}
-
-function onDiagnostic(diagnostic) {
-  throwNotImplemented('diagnostic', ts.flattenDiagnosticMessageText(diagnostic, '\n'));
-}
-
-class StubSystem {
-  args = [];
-  newLine = '\n';
-  useCaseSensitiveFileNames = true;
-
-  write(s) {
-  }
-
-  writeOutputIsTTY() {
-    return true;
-  }
-
-  readFile(path, encoding) {
-    if (path === '/agent/tsconfig.json')
-      return '{}';
-
-    if (path === '/agent/index.ts')
-      return 'Interceptor.attach(ptr(1234), { onEnter(args) {} });'
-
-    const agentZipPath = this.#nativePathToAgentZipPath(path);
-    if (agentZipPath !== null) {
-      return agentFiles.get(agentZipPath);
-    }
-
-    throwNotImplemented('readFile', path);
-  }
-
-  getFileSize(path) {
-    throwNotImplemented('getFileSize');
-  }
-
-  writeFile(path, data, writeByteOrderMark) {
-    throwNotImplemented('writeFile');
-  }
-
-  watchFile(path, callback, pollingInterval, options) {
-    throwNotImplemented('watchFile');
-  }
-
-  watchDirectory(path, callback, recursive, options) {
-    throwNotImplemented('watchDirectory');
-  }
-
-  resolvePath(path) {
-    throwNotImplemented('resolvePath');
-  }
-
-  fileExists(path) {
-    if (path === '/package.json' || path === '/agent/package.json')
-      return false;
-
-    const agentZipPath = this.#nativePathToAgentZipPath(path);
-    if (agentZipPath !== null)
-      return agentFiles.has(agentZipPath);
-
-    throwNotImplemented('fileExists', path);
-  }
-
-  directoryExists(path) {
-    if (path === '/' || path === projectRoot || path === compilerNodeModules)
-      return true;
-
-    const agentZipPath = this.#nativePathToAgentZipPath(path);
-    if (agentZipPath !== null)
-      return agentDirectories.has(agentZipPath);
-
-    if (path === '/node_modules/@types' || path === '/node_modules')
-      return false;
-
-    throwNotImplemented('directoryExists', path);
-  }
-
-  createDirectory(path) {
-    throwNotImplemented('createDirectory');
-  }
-
-  getExecutingFilePath() {
-    return [compilerRoot, 'ext', 'typescript.js'].join('/');
-  }
-
-  getCurrentDirectory() {
-    return '/';
-  }
-
-  getDirectories(path) {
-    const agentZipPath = this.#nativePathToAgentZipPath(path);
-    if (agentZipPath !== null) {
-      const result = [];
-      for (const dir of agentDirectories) {
-        const slashIndex = dir.lastIndexOf('/');
-        const parent = dir.substring(0, slashIndex);
-        if (parent === agentZipPath) {
-          const basename = dir.substring(slashIndex + 1);
-          result.push(basename);
-        }
-      }
-      return result;
-    }
-
-    throwNotImplemented('getDirectories', path);
-  }
-
-  readDirectory(path, extensions, exclude, include, depth) {
-    if (!extensions.includes('.ts'))
-      throwNotImplemented('readDirectory', path, extensions);
-    return ['index.ts'];
-  }
-
-  getModifiedTime(path) {
-  }
-
-  setModifiedTime(path, time) {
-  }
-
-  deleteFile(path) {
-  }
-
-  createHash(data) {
-    let hash = hashes.get(data);
-    if (hash === undefined) {
-      hash = 'hash' + nextHashId++;
-      hashes.set(data, hash);
-    }
-    return hash;
-  }
-
-  createSHA256Hash(data) {
-    throwNotImplemented('createSHA256Hash');
-  }
-
-  getMemoryUsage() {
-    throwNotImplemented('getMemoryUsage');
-  }
-
-  exit(exitCode) {
-  }
-
-  realpath(path) {
-    return path;
-  }
-
-  getEnvironmentVariable(name) {
-    return '';
-  }
-
-  setTimeout(callback, ms, ...args) {
-    throwNotImplemented('setTimeout');
-  }
-
-  clearTimeout(timeoutId) {
-    throwNotImplemented('clearTimeout');
-  }
-
-  clearScreen() {
-  }
-
-  base64decode(input) {
-    throwNotImplemented('base64decode');
-  }
-
-  base64encode(input) {
-    throwNotImplemented('base64encode');
-  }
-
-  #nativePathToAgentZipPath(path) {
-    if (path.startsWith(compilerRoot)) {
-      const subPath = path.substring(compilerRoot.length);
-      if (subPath.startsWith('/node_modules')) {
-        return subPath;
-      }
-      return '/node_modules/frida-compile' + subPath;
-    }
-
-    if (path.startsWith(projectNodeModules)) {
-      return '/node_modules' + path.substring(projectNodeModules.length);
-    }
-
-    return null;
-  }
-}
-
-function throwNotImplemented(operation, ...details) {
-  throw new Error('not implemented: ' + operation + ((details.length > 0) ? ` (${details.join(' ')})` : ''));
-}
-
-main();

src/compiler/backend-glue.c

@@ -0,0 +1,28 @@
+#ifdef _MSC_VER
+
+#include <glib.h>
+
+#ifdef HAVE_ARM64
+# define FRIDA_CGO_INIT_FUNC _st0_arm64_windows_lib
+#elif GLIB_SIZEOF_VOID_P == 8
+# define FRIDA_CGO_INIT_FUNC _st0_amd64_windows_lib
+#else
+# define FRIDA_CGO_INIT_FUNC st0_386_windows_lib
+#endif
+
+extern void FRIDA_CGO_INIT_FUNC ();
+
+void
+_frida_compiler_backend_init_go_runtime (void)
+{
+  FRIDA_CGO_INIT_FUNC ();
+}
+
+#else
+
+void
+_frida_compiler_backend_init_go_runtime (void)
+{
+}
+
+#endif

src/compiler/backend.go

@@ -0,0 +1,816 @@
+package main
+
+/*
+#include <stdint.h>
+
+typedef enum {
+  FRIDA_OUTPUT_UNESCAPED,
+  FRIDA_OUTPUT_HEX_BYTES,
+  FRIDA_OUTPUT_C_STRING,
+} FridaOutputFormat;
+
+typedef enum {
+  FRIDA_BUNDLE_ESM,
+  FRIDA_BUNDLE_IIFE,
+} FridaBundleFormat;
+
+typedef void (* FridaBuildCompleteFunc) (char * bundle, char * error_message, void * user_data);
+typedef void (* FridaWatchReadyFunc) (uintptr_t session_handle, char * error_message, void * user_data);
+typedef void (* FridaStartingFunc) (void * user_data);
+typedef void (* FridaFinishedFunc) (void * user_data);
+typedef void (* FridaOutputFunc) (char * bundle, void * user_data);
+typedef void (* FridaDiagnosticFunc) (char * category, int code, char * path, int line, int character, char * text,
+    void * user_data);
+typedef void (* FridaDestroyFunc) (void * user_data);
+
+static inline void
+invoke_build_complete_func (FridaBuildCompleteFunc fn,
+                            char * bundle,
+                            char * error_message,
+                            void * user_data)
+{
+  fn (bundle, error_message, user_data);
+}
+
+static inline void
+invoke_watch_ready_func (FridaWatchReadyFunc fn,
+                         uintptr_t session_handle,
+                         char * error_message,
+                         void * user_data)
+{
+  fn (session_handle, error_message, user_data);
+}
+
+static inline void
+invoke_starting_func (FridaStartingFunc fn,
+                      void * user_data)
+{
+  fn (user_data);
+}
+
+static inline void
+invoke_finished_func (FridaFinishedFunc fn,
+                      void * user_data)
+{
+  fn (user_data);
+}
+
+static inline void
+invoke_output_func (FridaOutputFunc fn,
+                    char * bundle,
+                    void * user_data)
+{
+  fn (bundle, user_data);
+}
+
+static inline void
+invoke_diagnostic_func (FridaDiagnosticFunc fn,
+                        char * category,
+                        int code,
+                        char * path,
+                        int line,
+                        int character,
+                        char * text,
+                        void * user_data)
+{
+  fn (category, code, path, line, character, text, user_data);
+}
+
+static inline void
+invoke_destroy_func (FridaDestroyFunc fn,
+                     void * user_data)
+{
+  fn (user_data);
+}
+*/
+import "C"
+
+import (
+	"fmt"
+	"path"
+	"path/filepath"
+	"runtime/cgo"
+	"strings"
+	"sync"
+	"unsafe"
+
+	esbuild "github.com/evanw/esbuild/pkg/api"
+	tsscanner "github.com/frida/typescript-go/pkg/scanner"
+)
+
+type BuildOptions struct {
+	ProjectRoot      string
+	Entrypoint       string
+	OutputFormat     OutputFormat
+	BundleFormat     BundleFormat
+	DisableTypeCheck bool
+	SourceMap        bool
+	Compress         bool
+}
+
+type OutputFormat C.FridaOutputFormat
+
+const (
+	OutputFormatUnescaped OutputFormat = OutputFormat(C.FRIDA_OUTPUT_UNESCAPED)
+	OutputFormatHexBytes  OutputFormat = OutputFormat(C.FRIDA_OUTPUT_HEX_BYTES)
+	OutputFormatCString   OutputFormat = OutputFormat(C.FRIDA_OUTPUT_C_STRING)
+)
+
+type BundleFormat C.FridaBundleFormat
+
+const (
+	BundleFormatESM  BundleFormat = BundleFormat(C.FRIDA_BUNDLE_ESM)
+	BundleFormatIIFE BundleFormat = BundleFormat(C.FRIDA_BUNDLE_IIFE)
+)
+
+type Diagnostic struct {
+	category        string
+	code            int
+	path            string
+	line, character int
+	text            string
+}
+
+type BuildEventCallbacks struct {
+	OnStart        BuildStartCallback
+	OnEnd          BuildEndCallback
+	OnOutput       BuildOutputCallback
+	OnDiagnostic   BuildDiagnosticCallback
+	OnConfigChange ConfigChangeCallback
+}
+
+type BuildStartCallback func()
+type BuildEndCallback func()
+type BuildOutputCallback func(bundle string)
+type BuildDiagnosticCallback func(d Diagnostic)
+
+//export _frida_compiler_backend_build
+func _frida_compiler_backend_build(cProjectRoot, cEntrypoint *C.char, outputFormat C.FridaOutputFormat, bundleFormat C.FridaBundleFormat,
+	disableTypeCheck, sourceMap, compress uintptr,
+	onCompleteFn C.FridaBuildCompleteFunc, onCompleteData unsafe.Pointer, onCompleteDataDestroy C.FridaDestroyFunc,
+	onDiagnosticFn C.FridaDiagnosticFunc, onDiagnosticData unsafe.Pointer) {
+	options := BuildOptions{
+		ProjectRoot:      C.GoString(cProjectRoot),
+		Entrypoint:       C.GoString(cEntrypoint),
+		OutputFormat:     OutputFormat(outputFormat),
+		BundleFormat:     BundleFormat(bundleFormat),
+		DisableTypeCheck: disableTypeCheck != 0,
+		SourceMap:        sourceMap != 0,
+		Compress:         compress != 0,
+	}
+	onComplete := NewCDelegate(onCompleteFn, onCompleteData, onCompleteDataDestroy)
+	onDiagnostic := NewCDelegate(onDiagnosticFn, onDiagnosticData, nil)
+
+	go func() {
+		defer onComplete.Dispose()
+		defer onDiagnostic.Dispose()
+
+		onDiagnostic := makeCBuildDiagnosticCallback(onDiagnostic)
+
+		bundle, err := build(options, onDiagnostic)
+
+		var cBundle, cErrorMessage *C.char
+		if err == nil {
+			cBundle = C.CString(bundle)
+		} else {
+			cErrorMessage = C.CString(err.Error())
+		}
+		C.invoke_build_complete_func(onComplete.Func, cBundle, cErrorMessage, onComplete.Data)
+	}()
+}
+
+//export _frida_compiler_backend_watch
+func _frida_compiler_backend_watch(cProjectRoot, cEntrypoint *C.char, outputFormat C.FridaOutputFormat, bundleFormat C.FridaBundleFormat,
+	disableTypeCheck, sourceMap, compress uintptr,
+	onReadyFn C.FridaWatchReadyFunc, onReadyData unsafe.Pointer, onReadyDataDestroy C.FridaDestroyFunc,
+	onStartingFn C.FridaStartingFunc, onStartingData unsafe.Pointer,
+	onFinishedFn C.FridaFinishedFunc, onFinishedData unsafe.Pointer,
+	onOutputFn C.FridaOutputFunc, onOutputData unsafe.Pointer,
+	onDiagnosticFn C.FridaDiagnosticFunc, onDiagnosticData unsafe.Pointer) {
+	options := BuildOptions{
+		ProjectRoot:      C.GoString(cProjectRoot),
+		Entrypoint:       C.GoString(cEntrypoint),
+		OutputFormat:     OutputFormat(outputFormat),
+		BundleFormat:     BundleFormat(bundleFormat),
+		DisableTypeCheck: disableTypeCheck != 0,
+		SourceMap:        sourceMap != 0,
+		Compress:         compress != 0,
+	}
+	onReady := NewCDelegate(onReadyFn, onReadyData, onReadyDataDestroy)
+	onStarting := NewCDelegate(onStartingFn, onStartingData, nil)
+	onFinished := NewCDelegate(onFinishedFn, onFinishedData, nil)
+	onOutput := NewCDelegate(onOutputFn, onOutputData, nil)
+	onDiagnostic := NewCDelegate(onDiagnosticFn, onDiagnosticData, nil)
+
+	go func() {
+		defer onReady.Dispose()
+
+		onDispose := func() {
+			onStarting.Dispose()
+			onFinished.Dispose()
+			onOutput.Dispose()
+			onDiagnostic.Dispose()
+		}
+
+		callbacks := BuildEventCallbacks{
+			OnStart: func() {
+				C.invoke_starting_func(onStarting.Func, onStarting.Data)
+			},
+			OnEnd: func() {
+				C.invoke_starting_func(onFinished.Func, onFinished.Data)
+			},
+			OnOutput: func(bundle string) {
+				C.invoke_output_func(onOutput.Func, C.CString(bundle), onOutput.Data)
+			},
+			OnDiagnostic: makeCBuildDiagnosticCallback(onDiagnostic),
+		}
+
+		session, err := NewWatchSession(options, onDispose, callbacks)
+
+		var cSession C.uintptr_t
+		var cErrorMessage *C.char
+		if err == nil {
+			cSession = C.uintptr_t(cgo.NewHandle(session))
+		} else {
+			cErrorMessage = C.CString(err.Error())
+		}
+		C.invoke_watch_ready_func(onReady.Func, cSession, cErrorMessage, onReady.Data)
+	}()
+}
+
+//export _frida_compiler_backend_watch_session_dispose
+func _frida_compiler_backend_watch_session_dispose(h uintptr) {
+	handle := cgo.Handle(h)
+	session := handle.Value().(*WatchSession)
+	session.Dispose()
+	handle.Delete()
+}
+
+func makeCBuildDiagnosticCallback(onDiagnostic *CDelegate[C.FridaDiagnosticFunc]) BuildDiagnosticCallback {
+	return func(d Diagnostic) {
+		var cPath *C.char
+		if d.path != "" {
+			cPath = C.CString(d.path)
+		}
+
+		C.invoke_diagnostic_func(onDiagnostic.Func, C.CString(d.category), C.int(d.code), cPath, C.int(d.line),
+			C.int(d.character), C.CString(d.text), onDiagnostic.Data)
+	}
+}
+
+func build(options BuildOptions, onDiagnostic BuildDiagnosticCallback) (bundle string, err error) {
+	callbacks := BuildEventCallbacks{
+		OnOutput: func(b string) {
+			bundle = b
+		},
+		OnDiagnostic: onDiagnostic,
+	}
+
+	ctx, err := makeContext(options, callbacks)
+	if err != nil {
+		return
+	}
+	defer ctx.Dispose()
+
+	result := ctx.Rebuild()
+
+	if len(result.Errors) != 0 {
+		err = fmt.Errorf("Compilation failed")
+	}
+	return
+}
+
+type WatchSession struct {
+	mu        sync.Mutex
+	options   BuildOptions
+	callbacks BuildEventCallbacks
+	ctx       esbuild.BuildContext
+	onDispose SessionDisposeHandler
+}
+
+type SessionDisposeHandler func()
+
+func NewWatchSession(opts BuildOptions, onDispose SessionDisposeHandler, callbacks BuildEventCallbacks) (session *WatchSession, err error) {
+	cbs := BuildEventCallbacks{
+		OnStart:      callbacks.OnStart,
+		OnEnd:        callbacks.OnEnd,
+		OnOutput:     callbacks.OnOutput,
+		OnDiagnostic: callbacks.OnDiagnostic,
+		OnConfigChange: func() {
+			if callbacks.OnConfigChange != nil {
+				callbacks.OnConfigChange()
+			}
+			session.onConfigChange()
+		},
+	}
+
+	ctx, err := makeContext(opts, cbs)
+	if err != nil {
+		return
+	}
+
+	ctx.Watch(esbuild.WatchOptions{})
+
+	session = &WatchSession{
+		options:   opts,
+		callbacks: cbs,
+		ctx:       ctx,
+		onDispose: onDispose,
+	}
+	return
+}
+
+func (s *WatchSession) Dispose() {
+	s.mu.Lock()
+	defer s.mu.Unlock()
+
+	if s.ctx != nil {
+		s.ctx.Dispose()
+		s.ctx = nil
+	}
+
+	s.onDispose()
+}
+
+func (s *WatchSession) onConfigChange() {
+	go func() {
+		s.mu.Lock()
+		defer s.mu.Unlock()
+
+		if s.ctx != nil {
+			s.ctx.Dispose()
+			s.ctx = nil
+		}
+
+		ctx, err := makeContext(s.options, s.callbacks)
+		if err != nil {
+			return
+		}
+		s.ctx = ctx
+
+		ctx.Watch(esbuild.WatchOptions{})
+	}()
+}
+
+func makeContext(options BuildOptions, callbacks BuildEventCallbacks) (ctx esbuild.BuildContext, err error) {
+	var e error
+
+	var projectRoot string
+	if projectRoot, e = filepath.EvalSymlinks(options.ProjectRoot); e != nil {
+		err = fmt.Errorf("Failed to resolve project root: %w", e)
+		return
+	}
+
+	var entrypoint string
+	if filepath.IsAbs(options.Entrypoint) {
+		entrypoint = options.Entrypoint
+	} else {
+		entrypoint = filepath.Join(projectRoot, options.Entrypoint)
+	}
+	if entrypoint, e = filepath.EvalSymlinks(entrypoint); e != nil {
+		err = fmt.Errorf("Failed to resolve entrypoint: %w", e)
+		return
+	}
+	rel, e := filepath.Rel(projectRoot, entrypoint)
+	if e != nil {
+		err = fmt.Errorf("Could not compute entrypoint path relative to project root: %w", e)
+		return
+	}
+	if strings.HasPrefix(rel, "..") {
+		err = fmt.Errorf("Entrypoint must be inside the project root")
+		return
+	}
+
+	isTS := strings.HasSuffix(entrypoint, ".ts")
+
+	var tsconfigCache *TSConfigCache
+	var tsconfigText string
+	var tsCompiler *TSCompiler
+
+	if isTS {
+		tsconfigCache = NewTSConfigCache(projectRoot, options.SourceMap, callbacks.OnConfigChange)
+
+		tsCompiler = NewTSCompiler(projectRoot, entrypoint, tsconfigCache.GetCompilerOptions)
+
+		_, tsconfigText, err = tsconfigCache.GetCompilerOptions(tsCompiler)
+		if err != nil {
+			err = fmt.Errorf("Failed to load tsconfig options: %w", err)
+			return
+		}
+	}
+
+	sourcemapOption := esbuild.SourceMapNone
+	if options.SourceMap {
+		if options.BundleFormat == BundleFormatESM {
+			sourcemapOption = esbuild.SourceMapExternal
+		} else {
+			sourcemapOption = esbuild.SourceMapInline
+		}
+	}
+
+	minifyWhitespace := false
+	minifyIdentifiers := false
+	minifySyntax := false
+	if options.Compress {
+		minifyWhitespace = true
+		minifyIdentifiers = true
+		minifySyntax = true
+	}
+
+	var format esbuild.Format
+	if options.BundleFormat == BundleFormatESM {
+		format = esbuild.FormatESModule
+	} else {
+		format = esbuild.FormatIIFE
+	}
+
+	plugins := []esbuild.Plugin{
+		makeBuildObserverPlugin(projectRoot, entrypoint, options, callbacks),
+	}
+
+	if isTS && !options.DisableTypeCheck {
+		plugins = append(plugins, makeTypeScriptPlugin(tsCompiler))
+	}
+
+	plugins = append(plugins, makeFridaShimsPlugin())
+
+	buildOpts := esbuild.BuildOptions{
+		Sourcemap:         sourcemapOption,
+		SourcesContent:    esbuild.SourcesContentExclude,
+		Target:            esbuild.ES2022,
+		MinifyWhitespace:  minifyWhitespace,
+		MinifyIdentifiers: minifyIdentifiers,
+		MinifySyntax:      minifySyntax,
+		LegalComments:     esbuild.LegalCommentsNone,
+		Bundle:            true,
+		Outdir:            projectRoot,
+		AbsWorkingDir:     projectRoot,
+		Platform:          esbuild.PlatformNode,
+		Format:            format,
+		Inject:            []string{"frida-builtins:///node-globals.js"},
+		EntryPoints:       []string{entrypoint},
+		Write:             false,
+		Plugins:           plugins,
+	}
+
+	if isTS {
+		buildOpts.TsconfigRaw = tsconfigText
+	}
+
+	if buildCtx, ctxErr := esbuild.Context(buildOpts); ctxErr == nil {
+		ctx = buildCtx
+	} else {
+		for _, e := range ctxErr.Errors {
+			emitDiagnostic("error", e, callbacks.OnDiagnostic)
+		}
+		err = fmt.Errorf("Failed to create ESBuild context")
+	}
+	return
+}
+
+func emitDiagnostic(category string, message esbuild.Message, onDiagnostic BuildDiagnosticCallback) {
+	d := Diagnostic{
+		category: category,
+		code:     -1,
+		text:     message.Text,
+	}
+
+	l := message.Location
+	if l != nil {
+		d.path = l.File
+		d.line = l.Line
+		d.character = l.Column
+	}
+
+	if message.PluginName == "frida-custom-ts" && len(message.Notes) == 2 {
+		d.category = message.Notes[0].Text
+		fmt.Sscan(message.Notes[1].Text, &d.code)
+	}
+
+	onDiagnostic(d)
+}
+
+func changeToJS(p string) string {
+	ext := path.Ext(p)
+	base := p[:len(p)-len(ext)]
+	return base + ".js"
+}
+
+func makeBuildObserverPlugin(projectRoot, entrypoint string, options BuildOptions, callbacks BuildEventCallbacks) esbuild.Plugin {
+	return esbuild.Plugin{
+		Name: "frida-build-observer",
+		Setup: func(build esbuild.PluginBuild) {
+			if callbacks.OnStart != nil {
+				build.OnStart(func() (esbuild.OnStartResult, error) {
+					callbacks.OnStart()
+					return esbuild.OnStartResult{}, nil
+				})
+			}
+
+			build.OnEnd(func(result *esbuild.BuildResult) (esbuild.OnEndResult, error) {
+				if len(result.Errors) == 0 {
+					var output string
+					if options.BundleFormat == BundleFormatESM {
+						output = makeESMBundle(result.OutputFiles, projectRoot, entrypoint)
+					} else {
+						output = string(result.OutputFiles[0].Contents)
+					}
+
+					switch options.OutputFormat {
+					case OutputFormatHexBytes:
+						output = encodeStringToHexBytes(output)
+					case OutputFormatCString:
+						output = encodeStringToCString(output)
+					}
+
+					callbacks.OnOutput(output)
+				} else {
+					for _, e := range result.Errors {
+						emitDiagnostic("error", e, callbacks.OnDiagnostic)
+					}
+					for _, e := range result.Warnings {
+						emitDiagnostic("warning", e, callbacks.OnDiagnostic)
+					}
+				}
+
+				if callbacks.OnEnd != nil {
+					callbacks.OnEnd()
+				}
+
+				return esbuild.OnEndResult{}, nil
+			})
+		},
+	}
+}
+
+func makeESMBundle(files []esbuild.OutputFile, projectRoot, entrypoint string) string {
+	entrypointJS, entrypointMap := outputForEntrypoint(projectRoot, entrypoint)
+	relEntryp, err := filepath.Rel(projectRoot, entrypoint)
+	if err != nil {
+		panic(fmt.Sprintf("Cannot compute entrypoint relative path: %v", err))
+	}
+	entrySubDir := filepath.Dir(relEntryp)
+
+	entryIndexJS := -1
+	entryIndexMap := -1
+	for i, of := range files {
+		if of.Path == entrypointJS {
+			entryIndexJS = i
+		}
+		if of.Path == entrypointMap {
+			entryIndexMap = i
+		}
+	}
+	if entryIndexJS < 0 {
+		panic(fmt.Sprintf("Entrypoint JS %q not found in files", entrypointJS))
+	}
+
+	orderedFiles := make([]esbuild.OutputFile, 0, len(files))
+	orderedFiles = append(orderedFiles, files[entryIndexJS])
+	if entryIndexMap >= 0 {
+		orderedFiles = append(orderedFiles, files[entryIndexMap])
+	}
+
+	for i, of := range files {
+		if i == entryIndexJS || i == entryIndexMap {
+			continue
+		}
+		orderedFiles = append(orderedFiles, of)
+	}
+
+	var sb strings.Builder
+
+	sb.WriteString("📦\n")
+	for _, of := range orderedFiles {
+		size := len(of.Contents)
+		relPath, _ := filepath.Rel(projectRoot, of.Path)
+		withSub := filepath.Join(entrySubDir, relPath)
+		sb.WriteString(fmt.Sprintf("%d /%s\n", size, filepath.ToSlash(withSub)))
+	}
+
+	sb.WriteString("✄\n")
+	for i, of := range orderedFiles {
+		sb.Write(of.Contents)
+		if i < len(orderedFiles)-1 {
+			sb.WriteString("\n✄\n")
+		}
+	}
+
+	return sb.String()
+}
+
+func outputForEntrypoint(projectRoot, entrypoint string) (jsOut, mapOut string) {
+	jsOut = filepath.Join(projectRoot, changeToJS(filepath.Base(entrypoint)))
+	mapOut = jsOut + ".map"
+	return
+}
+
+func encodeStringToHexBytes(s string) string {
+	n := len(s)
+	if n == 0 {
+		return ""
+	}
+
+	totalLen := n*4 + (n-1)*2 + 1
+	buf := make([]byte, 0, totalLen)
+
+	hexDigits := "0123456789abcdef"
+	for i := 0; i < n; i++ {
+		b := s[i]
+		buf = append(buf, '0', 'x')
+		buf = append(buf,
+			hexDigits[b>>4],
+			hexDigits[b&0xF],
+		)
+
+		if i < n-1 {
+			if (i+1)%12 == 0 {
+				buf = append(buf, ',', '\n')
+			} else {
+				buf = append(buf, ',', ' ')
+			}
+		}
+	}
+
+	buf = append(buf, '\n')
+
+	return string(buf)
+}
+
+func encodeStringToCString(s string) string {
+	n := len(s)
+	if n == 0 {
+		return `""`
+	}
+
+	hexDigits := "0123456789abcdef"
+	var bldr strings.Builder
+
+	openLiteral := func() {
+		bldr.WriteByte('"')
+	}
+	closeLiteral := func() {
+		bldr.WriteByte('"')
+	}
+
+	inLiteral := false
+
+	for i := 0; i < n; i++ {
+		c := s[i]
+
+		if !inLiteral {
+			openLiteral()
+			inLiteral = true
+		}
+
+		if c == '\n' {
+			bldr.WriteByte('\\')
+			bldr.WriteByte('n')
+			closeLiteral()
+			inLiteral = false
+
+			if i < n-1 {
+				bldr.WriteByte('\n')
+				openLiteral()
+				inLiteral = true
+			}
+			continue
+		}
+
+		switch c {
+		case '"':
+			bldr.WriteByte('\\')
+			bldr.WriteByte('"')
+		case '\\':
+			bldr.WriteByte('\\')
+			bldr.WriteByte('\\')
+
+		case '\a':
+			bldr.WriteByte('\\')
+			bldr.WriteByte('a')
+		case '\b':
+			bldr.WriteByte('\\')
+			bldr.WriteByte('b')
+		case '\t':
+			bldr.WriteByte('\\')
+			bldr.WriteByte('t')
+		case '\v':
+			bldr.WriteByte('\\')
+			bldr.WriteByte('v')
+		case '\f':
+			bldr.WriteByte('\\')
+			bldr.WriteByte('f')
+		case '\r':
+			bldr.WriteByte('\\')
+			bldr.WriteByte('r')
+
+		default:
+			isPrintableExceptQuoteAndBackslash := c >= 0x20 && c <= 0x7E
+			if isPrintableExceptQuoteAndBackslash {
+				bldr.WriteByte(c)
+			} else {
+				bldr.WriteByte('\\')
+				bldr.WriteByte('x')
+				bldr.WriteByte(hexDigits[c>>4])
+				bldr.WriteByte(hexDigits[c&0xF])
+			}
+		}
+	}
+
+	if inLiteral {
+		closeLiteral()
+	}
+
+	bldr.WriteByte('\n')
+
+	return bldr.String()
+}
+
+func makeTypeScriptPlugin(compiler *TSCompiler) esbuild.Plugin {
+	return esbuild.Plugin{
+		Name: "frida-custom-ts",
+		Setup: func(build esbuild.PluginBuild) {
+			build.OnStart(func() (esbuild.OnStartResult, error) {
+				compiler.EnsureProgramUpToDate()
+				return esbuild.OnStartResult{}, nil
+			})
+
+			build.OnEnd(func(result *esbuild.BuildResult) (esbuild.OnEndResult, error) {
+				if len(result.Errors) == 0 {
+					compiler.CommitPendingInputs()
+				} else {
+					compiler.DropPendingInputs()
+				}
+				return esbuild.OnEndResult{}, nil
+			})
+
+			build.OnLoad(esbuild.OnLoadOptions{Filter: "\\.ts$"}, func(args esbuild.OnLoadArgs) (esbuild.OnLoadResult, error) {
+				compiledJS, tsDiagnostics, err := compiler.Compile(args.Path)
+
+				result := esbuild.OnLoadResult{
+					WatchFiles: compiler.WatchFiles(),
+					WatchDirs:  compiler.WatchDirs(),
+				}
+
+				var esbuildMessages []esbuild.Message
+				for _, d := range tsDiagnostics {
+					f := d.File()
+					pos := d.Pos()
+					line, column := tsscanner.GetLineAndCharacterOfPosition(f, pos)
+
+					esbuildMessages = append(esbuildMessages, esbuild.Message{
+						Text: d.Message(),
+						Location: &esbuild.Location{
+							File:     f.FileName(),
+							Line:     line,
+							Column:   column,
+							Length:   d.Len(),
+							LineText: f.Text()[pos:d.End()],
+						},
+						Notes: []esbuild.Note{
+							{Text: d.Category().Name()},
+							{Text: fmt.Sprintf("%d", d.Code())},
+						},
+					})
+				}
+
+				if err != nil {
+					mainErr := esbuild.Message{Text: err.Error()}
+					result.Errors = append([]esbuild.Message{mainErr}, esbuildMessages...)
+					return result, nil
+				}
+
+				if len(esbuildMessages) > 0 {
+					result.Errors = esbuildMessages
+					return result, nil
+				}
+
+				result.Contents = &compiledJS
+				result.Loader = esbuild.LoaderJS
+				return result, nil
+			})
+		},
+	}
+}
+
+type CDelegate[F any] struct {
+	Func        F
+	null        F
+	Data        unsafe.Pointer
+	dataDestroy C.FridaDestroyFunc
+}
+
+func NewCDelegate[F any](function F, data unsafe.Pointer, dataDestroy C.FridaDestroyFunc) *CDelegate[F] {
+	return &CDelegate[F]{Func: function, Data: data, dataDestroy: dataDestroy}
+}
+
+func (d *CDelegate[F]) Dispose() {
+	if d.dataDestroy != nil {
+		C.invoke_destroy_func(d.dataDestroy, d.Data)
+	}
+	d.Func = d.null
+	d.Data = nil
+	d.dataDestroy = nil
+}
+
+func main() {}

src/compiler/backend.version

@@ -0,0 +1,7 @@
+{
+  global:
+    _frida_compiler_backend_*;
+
+  local:
+    *;
+};

src/compiler/build-backend.py

@@ -0,0 +1,375 @@
+import base64
+import json
+import os
+import shutil
+import struct
+import subprocess
+import sys
+from pathlib import Path
+from typing import List
+
+
+def main(argv):
+    go_config = json.loads(base64.b64decode(argv[1]).decode("utf-8"))
+    output_dir, priv_dir, go, npm, *inputs = [Path(d).resolve() for d in argv[2:]]
+
+    try:
+        build_backend(go_config, inputs, output_dir, priv_dir, go, npm)
+    except subprocess.CalledProcessError as e:
+        print(e, file=sys.stderr)
+        print(
+            "Output:\n\t| " + "\n\t| ".join(e.output.strip().split("\n")),
+            file=sys.stderr,
+        )
+        sys.exit(2)
+    except Exception as e:
+        print(e, file=sys.stderr)
+        sys.exit(1)
+
+
+def build_backend(
+    config: dict,
+    inputs: List[Path],
+    output_dir: Path,
+    priv_dir: Path,
+    go: Path,
+    npm: Path,
+):
+    base_dir = min(inputs, key=lambda p: len(p.parts)).parent
+    for f in inputs:
+        dest = priv_dir / f.relative_to(base_dir)
+        dest.parent.mkdir(exist_ok=True)
+        shutil.copy(f, dest)
+
+    go_sources = [str(f.relative_to(base_dir)) for f in inputs if f.suffix == ".go"]
+
+    def run(*args):
+        return subprocess.run(
+            args,
+            cwd=priv_dir,
+            env=config["env"],
+            stdout=subprocess.PIPE,
+            stderr=subprocess.STDOUT,
+            encoding="utf-8",
+            check=True,
+        )
+
+    run(npm, "install")
+    # run(npm, "link", "/home/oleavr/src/frida-fs")
+
+    mode = config["mode"]
+
+    backend_stem = "frida-compiler-backend"
+    if mode == "c-shared":
+        backend_stem += "-raw"
+
+    backend_a = priv_dir / f"{backend_stem}.a"
+    backend_shlib = priv_dir / (f"{backend_stem}" + config["shlib_suffix"])
+    backend_h = priv_dir / f"{backend_stem}.h"
+
+    extra_go_args = config["extra_go_args"].copy()
+
+    if mode == "c-shared":
+        version_script = priv_dir / "backend.version"
+        extra_go_args.append(f"-ldflags=-linkmode=external -extldflags=-Wl,--version-script={version_script}")
+
+    run(
+        go,
+        "build",
+        f"-buildmode={mode}",
+        "-o",
+        backend_a.name if mode == "c-archive" else backend_shlib.name,
+        "-buildvcs=false",
+        *extra_go_args,
+        *go_sources,
+    )
+
+    if mode == "c-archive":
+        symbols_to_scramble = detect_conflictful_symbols_in_archive(backend_a, config["nm"])
+        scramble_symbols_in_archive(backend_a, symbols_to_scramble, config["ranlib"])
+
+        if (mingw := config.get("mingw")) is not None and (abi := config["abi"]) in {
+            "x86",
+            "x86_64",
+        }:
+            prefix = Path(mingw["prefix"])
+            ar = config["ar"]
+
+            libmingwex_a = prefix / "lib" / "libmingwex.a"
+            if not libmingwex_a.exists():
+                libmingwex_a = prefix / mingw["triplet"] / "lib" / "libmingwex.a"
+
+            libgcc_objects = [
+                "_chkstk_ms.o",
+            ]
+            run(*ar, "x", mingw["libcc"], *libgcc_objects)
+
+            gwex_objflavor = "64" if abi == "x86_64" else "32"
+            gwex_objects = [
+                f"lib{gwex_objflavor}_libmingwex_a-{name}.o"
+                for name in [
+                    "dmisc",
+                    "gdtoa",
+                    "gmisc",
+                    "mingw_fprintf",
+                    "mingw_pformat",
+                    "misc",
+                ]
+            ]
+            run(*ar, "x", libmingwex_a, *gwex_objects)
+
+            extra_objects = []
+            if abi == "x86_64":
+                run(*ar, "x", backend_a.name, "go.o")
+                sort_pdata_in_object(Path(priv_dir) / "go.o")
+                extra_objects.append("go.o")
+
+            run(*ar, "rs", backend_a.name, *libgcc_objects, *gwex_objects, *extra_objects)
+
+        shutil.copy(priv_dir / backend_a.name, output_dir / backend_a.name)
+    else:
+        shutil.copy(priv_dir / backend_shlib.name, output_dir / backend_shlib.name)
+
+    shutil.copy(priv_dir / backend_h.name, output_dir / backend_h.name)
+
+
+def detect_conflictful_symbols_in_archive(
+    archive: Path, nm_cmd_array: List[str]
+) -> List[str]:
+    result = []
+    for line in subprocess.run(
+        [*nm_cmd_array, str(archive)], capture_output=True, encoding="utf-8", check=True
+    ).stdout.splitlines():
+        tokens = line.lstrip().split(" ")
+        if len(tokens) >= 3 and tokens[1] in {"S", "T"}:
+            symbol = tokens[2]
+            if all(sub not in symbol for sub in ("/", ".", ":", "frida")):
+                result.append(symbol)
+    return result
+
+
+def scramble_symbols_in_archive(
+    archive: Path, symbols: List[str], ranlib_cmd_array: List[str]
+):
+    data = archive.read_bytes()
+
+    for old_sym in symbols:
+        new_sym = roll_first_alpha(old_sym)
+        data = data.replace(old_sym.encode("ascii"), new_sym.encode("ascii"))
+
+    archive.write_bytes(data)
+
+    subprocess.run([*ranlib_cmd_array, str(archive)], check=True)
+
+
+def roll_first_alpha(s: str) -> str:
+    chars = list(s)
+    for i, c in enumerate(chars):
+        if c.isalpha():
+            if c == "z":
+                chars[i] = "a"
+            elif c == "Z":
+                chars[i] = "A"
+            else:
+                chars[i] = chr(ord(c) + 1)
+            break
+    return "".join(chars)
+
+
+# Work around the Go toolchain's almost-MSVC-compatible object files
+# until our patch is merged upstream:
+# https://go-review.googlesource.com/c/go/+/678795
+def sort_pdata_in_object(object_file: Path):
+    data = bytearray(object_file.read_bytes())
+
+    # --- Parse COFF File Header (IMAGE_FILE_HEADER) ---
+    # Format: WORD Machine; WORD NumberOfSections;
+    #         DWORD TimeDateStamp; DWORD PointerToSymbolTable;
+    #         DWORD NumberOfSymbols; WORD SizeOfOptionalHeader;
+    #         WORD Characteristics;
+    IMAGE_FILE_HEADER_FMT = "<HHLLLHH"
+    IMAGE_FILE_HEADER_SIZE = struct.calcsize(IMAGE_FILE_HEADER_FMT)
+
+    if len(data) < IMAGE_FILE_HEADER_SIZE:
+        print("Error: File too small to be a valid COFF object", file=sys.stderr)
+        return
+
+    (
+        machine,
+        number_of_sections,
+        time_date_stamp,
+        pointer_to_symbol_table,
+        number_of_symbols,
+        size_of_optional_header,
+        characteristics,
+    ) = struct.unpack(IMAGE_FILE_HEADER_FMT, data[0:IMAGE_FILE_HEADER_SIZE])
+
+    # --- Parse Section Headers to find .pdata ---
+    # Each IMAGE_SECTION_HEADER is 40 bytes: Name[8], Misc(VirtualSize), VirtualAddress,
+    # SizeOfRawData, PointerToRawData, PointerToRelocations, PointerToLinenumbers,
+    # NumberOfRelocations, NumberOfLinenumbers, Characteristics
+    SECTION_HEADER_FMT = "<8sLLLLLLHHI"
+    SECTION_HEADER_SIZE = struct.calcsize(SECTION_HEADER_FMT)
+    section_table_offset = IMAGE_FILE_HEADER_SIZE + size_of_optional_header
+
+    pdata_section_index = None
+    pdata_pointer_to_raw = None
+    pdata_size_of_raw = None
+    pdata_pointer_to_relocs = None
+    pdata_number_of_relocs = None
+
+    # Keep all section headers for rewriting relocation entries later if needed
+    section_headers = []
+
+    for i in range(number_of_sections):
+        offset = section_table_offset + i * SECTION_HEADER_SIZE
+        section_data = data[offset : offset + SECTION_HEADER_SIZE]
+        (
+            name,
+            virtual_size,
+            virtual_address,
+            size_of_raw_data,
+            pointer_to_raw_data,
+            pointer_to_relocations,
+            pointer_to_linenumbers,
+            number_of_relocations,
+            number_of_linenumbers,
+            sec_characteristics,
+        ) = struct.unpack(SECTION_HEADER_FMT, section_data)
+
+        section_name = name.rstrip(b"\x00").decode("utf-8")
+        section_headers.append(
+            {
+                "name": section_name,
+                "offset": offset,
+                "virtual_size": virtual_size,
+                "virtual_address": virtual_address,
+                "size_of_raw_data": size_of_raw_data,
+                "pointer_to_raw_data": pointer_to_raw_data,
+                "pointer_to_relocations": pointer_to_relocations,
+                "number_of_relocations": number_of_relocations,
+            }
+        )
+
+        if section_name == ".pdata":
+            pdata_section_index = i
+            pdata_pointer_to_raw = pointer_to_raw_data
+            pdata_size_of_raw = size_of_raw_data
+            pdata_pointer_to_relocs = pointer_to_relocations
+            pdata_number_of_relocs = number_of_relocations
+
+    if pdata_section_index is None:
+        print("Error: No .pdata section found in the object file", file=sys.stderr)
+        return
+
+    # --- Parse Symbol Table ---
+    # Each IMAGE_SYMBOL is 18 bytes: Name[8], Value (4 bytes), SectionNumber (2 bytes),
+    # Type (2 bytes), StorageClass (1 byte), NumberOfAuxSymbols (1 byte)
+    SYMBOL_TABLE_ENTRY_SIZE = 18
+    symbols = []
+    for sym_index in range(number_of_symbols):
+        sym_offset = pointer_to_symbol_table + sym_index * SYMBOL_TABLE_ENTRY_SIZE
+        entry = data[sym_offset : sym_offset + SYMBOL_TABLE_ENTRY_SIZE]
+        if len(entry) < SYMBOL_TABLE_ENTRY_SIZE:
+            print("Error: Truncated symbol table entry", file=sys.stderr)
+            return
+        # Unpack: Name (8s), Value (L), SectionNumber (h), Type (H), StorageClass (B), NumberOfAuxSymbols (B)
+        name_bytes, value, section_number, sym_type, storage_class, num_aux = (
+            struct.unpack("<8sLhHBB", entry)
+        )
+        # Decode name: if name_bytes[0:4] are zeros, use string from offset in string table
+        if name_bytes[:4] == b"\x00\x00\x00\x00":
+            str_table_offset = struct.unpack("<L", name_bytes[4:])[0]
+            # String table starts immediately after symbol table: size (4 bytes) + NUL-terminated strings
+            str_tab_start = (
+                pointer_to_symbol_table + number_of_symbols * SYMBOL_TABLE_ENTRY_SIZE
+            )
+            # Fetch the name from string table
+            str_offset = str_tab_start + str_table_offset
+            name_end = data.find(b"\x00", str_offset)
+            symbol_name = data[str_offset:name_end].decode("utf-8")
+        else:
+            symbol_name = name_bytes.partition(b"\x00")[0].decode("utf-8")
+
+        symbols.append(
+            {"name": symbol_name, "value": value, "section_number": section_number}
+        )
+
+    # --- Read original .pdata section raw data ---
+    pdata_data = data[pdata_pointer_to_raw : pdata_pointer_to_raw + pdata_size_of_raw]
+    if len(pdata_data) % 12 != 0:
+        print("Error: .pdata size is not a multiple of 12 bytes", file=sys.stderr)
+        return
+    num_entries = len(pdata_data) // 12
+
+    # --- Read relocation entries for .pdata ---
+    # Each IMAGE_RELOCATION is 10 bytes: VirtualAddress (4), SymbolTableIndex (4), Type (2)
+    RELOC_ENTRY_SIZE = 10
+    reloc_entries = []
+    reloc_table_start = pdata_pointer_to_relocs
+    for rindex in range(pdata_number_of_relocs):
+        reloff = reloc_table_start + rindex * RELOC_ENTRY_SIZE
+        entry = data[reloff : reloff + RELOC_ENTRY_SIZE]
+        if len(entry) < RELOC_ENTRY_SIZE:
+            print("Error: Truncated relocation entry", file=sys.stderr)
+            return
+        va, sym_index, rtype = struct.unpack("<LLH", entry)
+        reloc_entries.append(
+            {"virtual_address": va, "symbol_index": sym_index, "type": rtype}
+        )
+
+    # There should be 3 relocations per .pdata entry
+    if len(reloc_entries) != num_entries * 3:
+        print(
+            "Warning: Expected {} relocations but found {}".format(
+                num_entries * 3, len(reloc_entries)
+            ),
+            file=sys.stderr,
+        )
+
+    # --- Associate each entry with its relocations and sorting key ---
+    entries = []
+    for i in range(num_entries):
+        entry_bytes = pdata_data[i * 12 : (i + 1) * 12]
+        entry_relocs = reloc_entries[i * 3 : i * 3 + 3]
+
+        # Sorting key: use symbol.Value of first relocation"s symbol index
+        sym_idx = entry_relocs[0]["symbol_index"]
+        if sym_idx < 0 or sym_idx >= number_of_symbols:
+            key = 0
+        else:
+            key = symbols[sym_idx]["value"]
+
+        entries.append({"entry_bytes": entry_bytes, "relocs": entry_relocs, "key": key})
+
+    # --- Sort entries by computed key ---
+    entries.sort(key=lambda x: x["key"])
+
+    # --- Build new .pdata data buffer ---
+    sorted_pdata = bytearray()
+    for e in entries:
+        sorted_pdata.extend(e["entry_bytes"])
+
+    # --- Build new relocation table buffer ---
+    new_reloc_buf = bytearray()
+    for new_i, e in enumerate(entries):
+        for reloc in e["relocs"]:
+            field_offset = reloc["virtual_address"] % 12
+            new_va = new_i * 12 + field_offset
+            packed = struct.pack("<LLH", new_va, reloc["symbol_index"], reloc["type"])
+            new_reloc_buf.extend(packed)
+
+    # --- Write back sorted .pdata and new relocations into data buffer ---
+    # Replace .pdata raw data
+    data[pdata_pointer_to_raw : pdata_pointer_to_raw + pdata_size_of_raw] = sorted_pdata
+    # Replace relocation entries
+    data[pdata_pointer_to_relocs : pdata_pointer_to_relocs + len(new_reloc_buf)] = (
+        new_reloc_buf
+    )
+
+    # --- Emit the fixed object file ---
+    object_file.write_bytes(data)
+
+
+if __name__ == "__main__":
+    main(sys.argv)

src/compiler/compiler.resources

@@ -1,3 +1,2 @@
 [resource-compiler]
 namespace = Frida.Data.Compiler
-compress = *.js:text:7; *.bin:generic:7

src/compiler/compiler.resources.prod

@@ -1,3 +0,0 @@
-[resource-compiler]
-namespace = Frida.Data.Compiler
-compress = *.js:text:11; *.bin:generic:11

src/compiler/compiler.vala

@@ -1,63 +1,56 @@
 namespace Frida {
-	public class Compiler : Object {
+	public sealed class Compiler : Object {
 		public signal void starting ();
 		public signal void finished ();
 		public signal void output (string bundle);
 		public signal void diagnostics (Variant diagnostics);
 
-		public DeviceManager manager {
-			get;
-			construct;
+		private size_t watch_session_handle = 0;
+		private Gee.Queue<Diagnostic> pending_diagnostics = new Gee.ArrayQueue<Diagnostic> ();
+
+		private MainContext main_context;
+
+		// TODO: Remove the DeviceManager parameter.
+		public Compiler (DeviceManager? manager = null) {
+			Object ();
 		}
 
-#if HAVE_COMPILER_BACKEND
-		private Promise<Agent>? load_request;
-		private Gee.Map<uint, MonitorEntry> monitors = new Gee.HashMap<uint, MonitorEntry> ();
-		private Gee.Set<MonitorEntry> dirty_monitors = new Gee.HashSet<MonitorEntry> ();
-		private TimeoutSource? monitor_flush_timer;
-
-		private Cancellable io_cancellable = new Cancellable ();
-#endif
-
-		public Compiler (DeviceManager manager) {
-			Object (manager: manager);
+		static construct {
+			CompilerBackend.init ();
 		}
 
-#if HAVE_COMPILER_BACKEND
-		public override void dispose () {
-			if (load_request != null)
-				close.begin ();
-
-			base.dispose ();
+		construct {
+			main_context = Frida.get_main_context ();
 		}
 
-		private async void close () {
-			try {
-				var agent = yield get_agent (null);
-				yield agent.close (null);
-			} catch (GLib.Error e) {
-			}
-			load_request = null;
-
-			if (monitor_flush_timer != null) {
-				monitor_flush_timer.destroy ();
-				monitor_flush_timer = null;
-			}
-
-			foreach (var entry in monitors.values)
-				detach_monitor_entry (entry);
-			monitors.clear ();
+		~Compiler () {
+			cancel_watch ();
 		}
-#endif
 
 		public async string build (string entrypoint, BuildOptions? options = null, Cancellable? cancellable = null)
 				throws Error, IOError {
-#if HAVE_COMPILER_BACKEND
-			var agent = yield get_agent (cancellable);
+			CompilerBackend.check_available ();
+
+			BuildOptions opts = (options != null) ? options : new BuildOptions ();
+			string project_root = compute_project_root (entrypoint, opts);
 
 			starting ();
 			try {
-				string bundle = yield agent.build (entrypoint, options, cancellable);
+				string? bundle = null;
+				string? error_message = null;
+				CompilerBackend.BuildCompleteFunc on_complete = (b, e) => {
+					bundle = b;
+					error_message = e;
+					schedule_on_frida_thread (build.callback);
+				};
+
+				CompilerBackend.build (project_root, entrypoint, opts.output_format, opts.bundle_format,
+					(size_t) (opts.type_check == NONE), (size_t) (opts.source_maps == INCLUDED),
+					(size_t) (opts.compression == TERSER), (owned) on_complete, on_diagnostic);
+				yield;
+
+				if (error_message != null)
+					throw new Error.INVALID_ARGUMENT ("%s", error_message);
 
 				output (bundle);
 
@@ -65,9 +58,6 @@ namespace Frida {
 			} finally {
 				finished ();
 			}
-#else
-			throw_not_supported ();
-#endif
 		}
 
 		public string build_sync (string entrypoint, BuildOptions? options = null, Cancellable? cancellable = null)
@@ -89,13 +79,38 @@ namespace Frida {
 
 		public async void watch (string entrypoint, WatchOptions? options = null, Cancellable? cancellable = null)
 				throws Error, IOError {
-#if HAVE_COMPILER_BACKEND
-			var agent = yield get_agent (cancellable);
+			CompilerBackend.check_available ();
 
-			yield agent.watch (entrypoint, options, cancellable);
-#else
-			throw_not_supported ();
-#endif
+			WatchOptions opts = (options != null) ? options : new WatchOptions ();
+			string project_root = compute_project_root (entrypoint, opts);
+
+			cancel_watch ();
+
+			size_t session_handle = 0;
+			string? error_message = null;
+			CompilerBackend.WatchReadyFunc on_ready = (h, e) => {
+				session_handle = h;
+				error_message = e;
+				schedule_on_frida_thread (watch.callback);
+			};
+
+			CompilerBackend.watch (project_root, entrypoint, opts.output_format, opts.bundle_format,
+				(size_t) (opts.type_check == NONE), (size_t) (opts.source_maps == INCLUDED),
+				(size_t) (opts.compression == TERSER), (owned) on_ready, on_starting, on_finished,
+				on_output, on_diagnostic);
+			yield;
+
+			if (error_message != null)
+				throw new Error.INVALID_ARGUMENT ("%s", error_message);
+
+			watch_session_handle = session_handle;
+		}
+
+		private void cancel_watch () {
+			if (watch_session_handle != 0) {
+				CompilerBackend.WatchSession.dispose (watch_session_handle);
+				watch_session_handle = 0;
+			}
 		}
 
 		public void watch_sync (string entrypoint, WatchOptions? options = null, Cancellable? cancellable = null)
@@ -115,343 +130,238 @@ namespace Frida {
 			}
 		}
 
-#if HAVE_COMPILER_BACKEND
-		private void on_watch_add (uint id, string path, string type, int64 polling_interval) {
-			var file = File.parse_name (path);
+		private void on_starting () {
+			schedule_on_frida_thread (() => {
+				starting ();
+				return Source.REMOVE;
+			});
+		}
 
-			GLib.FileMonitor monitor;
-			try {
-				if (type == "file")
-					monitor = file.monitor_file (FileMonitorFlags.SEND_MOVED, io_cancellable);
-				else if (type == "directory")
-					monitor = file.monitor_directory (FileMonitorFlags.NONE, io_cancellable);
-				else
-					assert_not_reached ();
-			} catch (GLib.Error e) {
-				return;
+		private void on_finished () {
+			schedule_on_frida_thread (() => {
+				finished ();
+				return Source.REMOVE;
+			});
+		}
+
+		private void on_output (owned string bundle) {
+			schedule_on_frida_thread (() => {
+				output (bundle);
+				return Source.REMOVE;
+			});
+		}
+
+		private void on_diagnostic (owned string category, int code, owned string? path, int line, int character,
+				owned string text) {
+			var diag = new Diagnostic () {
+				category = category,
+				code = code,
+				path = path,
+				line = line,
+				character = character,
+				text = text,
+			};
+
+			bool schedule_emit = false;
+			lock (pending_diagnostics) {
+				schedule_emit = pending_diagnostics.is_empty;
+				pending_diagnostics.add (diag);
 			}
 
-			if (polling_interval != 0)
-				monitor.rate_limit = (int) polling_interval;
-
-			var entry = new MonitorEntry (id, monitor);
-			entry.file_changed.connect (on_file_changed);
-			monitors[id] = entry;
-		}
-
-		private void on_watch_remove (uint id) {
-			MonitorEntry? entry;
-			if (monitors.unset (id, out entry))
-				detach_monitor_entry (entry);
-		}
-
-		private void detach_monitor_entry (MonitorEntry entry) {
-			dirty_monitors.remove (entry);
-
-			entry.file_changed.disconnect (on_file_changed);
-			entry.destroy ();
-		}
-
-		private void on_file_changed (MonitorEntry entry) {
-			dirty_monitors.add (entry);
-
-			if (monitor_flush_timer == null) {
-				var source = new TimeoutSource (50);
-				source.set_callback (on_monitor_flush_tick);
-				source.attach (MainContext.get_thread_default ());
-				monitor_flush_timer = source;
+			if (schedule_emit) {
+				schedule_on_frida_thread (() => {
+					emit_pending_diagnostics ();
+					return Source.REMOVE;
+				});
 			}
 		}
 
-		private bool on_monitor_flush_tick () {
-			var settled = new Gee.ArrayList<MonitorEntry> ();
-			var now = get_monotonic_time ();
-			settled.add_all_iterator (dirty_monitors.filter (m => now - m.last_change >= 50000));
-
-			Agent agent = load_request.future.value;
-			foreach (var entry in settled) {
-				agent.notify_file_changed (entry.id, entry.state, io_cancellable);
-				dirty_monitors.remove (entry);
+		private void emit_pending_diagnostics () {
+			var batch = new Gee.ArrayList<Diagnostic> ();
+			lock (pending_diagnostics) {
+				batch.add_all (pending_diagnostics);
+				pending_diagnostics.clear ();
 			}
 
-			if (!dirty_monitors.is_empty)
-				return Source.CONTINUE;
+			var builder = new VariantBuilder (new VariantType.array (VariantType.VARDICT));
 
-			monitor_flush_timer = null;
-			return Source.REMOVE;
-		}
-
-		private async Agent get_agent (Cancellable? cancellable) throws Error, IOError {
-			Future<Agent> future;
-			if (load_request != null) {
-				future = load_request.future;
-			} else {
-				load_request = new Promise<Agent> ();
-				future = load_request.future;
-
-				load_agent.begin ();
+			foreach (var d in batch) {
+				builder.open (VariantType.VARDICT);
+				builder.add ("{sv}", "category", new Variant.string (d.category));
+				builder.add ("{sv}", "code", new Variant.int64 (d.code));
+				if (d.path != null) {
+					var b = new VariantBuilder (VariantType.VARDICT);
+					b.add ("{sv}", "path", new Variant.string (d.path));
+					b.add ("{sv}", "line", new Variant.int64 (d.line));
+					b.add ("{sv}", "character", new Variant.int64 (d.character));
+					builder.add ("{sv}", "file", b.end ());
+				}
+				builder.add ("{sv}", "text", new Variant.string (d.text));
+				builder.close ();
 			}
 
-			return yield future.wait_async (cancellable);
+			diagnostics (builder.end ());
 		}
 
-		private async void load_agent () {
-			try {
-				var device = yield manager.get_device_by_type (LOCAL, 0, io_cancellable);
-				var session = yield device.get_host_session (io_cancellable);
-				var agent = new Agent (this, (BaseDBusHostSession) session);
-
-				load_request.resolve (agent);
-			} catch (GLib.Error e) {
-				if ((e is Error || e is IOError.CANCELLED))
-					e = new Error.NOT_SUPPORTED ("%s", e.message);
-
-				load_request.reject (e);
-				load_request = null;
-			}
-		}
-#else
-		[NoReturn]
-		private void throw_not_supported () throws Error {
-			throw new Error.NOT_SUPPORTED ("Compiler backend disabled at build-time");
-		}
-#endif
-
 		private T create<T> () {
 			return Object.new (typeof (T), parent: this);
 		}
 
+		protected void schedule_on_frida_thread (owned SourceFunc function) {
+			var source = new IdleSource ();
+			source.set_callback ((owned) function);
+			source.attach (main_context);
+		}
+
+		private class Diagnostic {
+			public string category;
+			public int code;
+			public string? path;
+			public int line;
+			public int character;
+			public string text;
+		}
+
 		private abstract class CompilerTask<T> : AsyncTask<T> {
 			public weak Compiler parent {
 				get;
 				construct;
 			}
 		}
+	}
 
+	namespace CompilerBackend {
+		private void init () {
 #if HAVE_COMPILER_BACKEND
-		private class Agent : InternalAgent {
-			public weak Compiler parent {
-				get;
-				construct;
-			}
-
-			private Promise<string> source_request = new Promise<string> ();
-			private Promise<Bytes?> snapshot_request = new Promise<Bytes?> ();
-
-			public Agent (Compiler parent, BaseDBusHostSession host_session) {
-				Object (
-					parent: parent,
-					host_session: host_session,
-#if HAVE_V8
-					script_runtime: ScriptRuntime.V8
+#if COMPILER_BACKEND_STATIC_COMPILATION
+			_init_go_runtime ();
+			build = (BuildFunc) _build;
+			watch = (WatchFunc) _watch;
+			WatchSession.dispose = (WatchSession.DisposeFunc) WatchSession._dispose;
 #else
-					script_runtime: ScriptRuntime.DEFAULT
-#endif
-				);
-			}
+			unowned uint8[] backend_so = Frida.Data.Compiler.get_frida_compiler_backend_so_blob ().data;
 
-			construct {
-				load_resources ();
-			}
+			FileDescriptor fd;
+			if (MemoryFileDescriptor.is_supported ()) {
+				fd = MemoryFileDescriptor.from_bytes ("frida-compiler-backend.so", new Bytes.static (backend_so));
+			} else {
+				string name_used;
+				try {
+					fd = new FileDescriptor (FileUtils.open_tmp ("frida-compiler-backend-XXXXXX.so", out name_used));
+					FileUtils.unlink (name_used);
 
-			private void load_resources () {
-				new Thread<void> ("compiler-agent-loader", () => {
-					var agent_js_blob = Data.Compiler.get_agent_js_blob ();
-					Bytes agent_js_bytes = decompress (agent_js_blob.data, agent_js_blob.uncompressed_size);
-					source_request.resolve ((string) agent_js_bytes.get_data ());
+					var output = new UnixOutputStream (fd.handle, false);
+					output.write_all (backend_so, null);
 
-					var snapshot_blob = Data.Compiler.get_snapshot_bin_blob ();
-					Bytes snapshot = decompress (snapshot_blob.data, snapshot_blob.uncompressed_size);
-					snapshot_request.resolve ((snapshot.get_size () != 0) ? snapshot : null);
-				});
-			}
-
-			public async string build (string entrypoint, BuildOptions? options, Cancellable? cancellable)
-					throws Error, IOError {
-				BuildOptions opts = (options != null) ? options : new BuildOptions ();
-
-				Json.Node bundle = yield call ("build", new Json.Node[] {
-						new Json.Node.alloc ().init_string (compute_project_root (entrypoint, opts)),
-						new Json.Node.alloc ().init_string (entrypoint),
-						new Json.Node.alloc ().init_string (opts.source_maps.to_nick ()),
-						new Json.Node.alloc ().init_string (opts.compression.to_nick ()),
-					}, null, cancellable);
-				return bundle.get_string ();
-			}
-
-			public async void watch (string entrypoint, WatchOptions? options, Cancellable? cancellable)
-					throws Error, IOError {
-				WatchOptions opts = (options != null) ? options : new WatchOptions ();
-
-				yield call ("watch", new Json.Node[] {
-						new Json.Node.alloc ().init_string (compute_project_root (entrypoint, opts)),
-						new Json.Node.alloc ().init_string (entrypoint),
-						new Json.Node.alloc ().init_string (opts.source_maps.to_nick ()),
-						new Json.Node.alloc ().init_string (opts.compression.to_nick ()),
-					}, null, cancellable);
-			}
-
-			private static string compute_project_root (string entrypoint, CompilerOptions options) {
-				string? project_root = options.project_root;
-
-				if (project_root != null)
-					return project_root;
-
-				if (Path.is_absolute (entrypoint))
-					return Path.get_dirname (entrypoint);
-
-				return Environment.get_current_dir ();
-			}
-
-			public void notify_file_changed (uint id, FileState state, Cancellable? cancellable) {
-				var notification = new Json.Builder ();
-				notification
-					.begin_object ()
-						.set_member_name ("type")
-						.add_string_value ("watch:change")
-						.set_member_name ("id")
-						.add_int_value (id)
-						.set_member_name ("state")
-						.add_string_value (Marshal.enum_to_nick<FileState> (state))
-					.end_object ();
-				post.begin (notification.get_root (), cancellable);
-			}
-
-			protected override async uint get_target_pid (Cancellable? cancellable) throws Error, IOError {
-				return 0;
-			}
-
-			protected override async string? load_source (Cancellable? cancellable) throws Error, IOError {
-				return yield source_request.future.wait_async (cancellable);
-			}
-
-			protected override async Bytes? load_snapshot (Cancellable? cancellable, out SnapshotTransport transport)
-					throws Error, IOError {
-				transport = SHARED_MEMORY;
-				return yield snapshot_request.future.wait_async (cancellable);
-			}
-
-			protected override void on_event (string type, Json.Array event) {
-				if (type == "diagnostics") {
-					on_build_diagnostics (event.get_array_element (1));
-				} else if (type == "watch:compilation-starting") {
-					parent.starting ();
-				} else if (type == "watch:compilation-finished") {
-					parent.finished ();
-				} else if (type == "watch:bundle-updated") {
-					on_watch_bundle_updated (event.get_string_element (1));
-				} else if (type == "watch:add") {
-					parent.on_watch_add ((uint) event.get_int_element (1), event.get_string_element (2),
-						event.get_string_element (3), event.get_int_element (4));
-				} else if (type == "watch:remove") {
-					parent.on_watch_remove ((uint) event.get_int_element (1));
-				} else {
+					Posix.lseek (fd.handle, 0, Posix.SEEK_SET);
+				} catch (GLib.Error e) {
 					assert_not_reached ();
 				}
 			}
 
-			private void on_build_diagnostics (Json.Array diagnostics) {
-				uint n = diagnostics.get_length ();
-
-				var builder = new VariantBuilder (new VariantType.array (VariantType.VARDICT));
-				for (uint i = 0; i != n; i++) {
-					var diag = diagnostics.get_array_element (i);
-					builder.open (VariantType.VARDICT);
-					builder.add ("{sv}", "category", new Variant.string (diag.get_string_element (0)));
-					builder.add ("{sv}", "code", new Variant.int64 (diag.get_int_element (1)));
-					if (!diag.get_null_element (2)) {
-						var file = diag.get_array_element (2);
-						var b = new VariantBuilder (VariantType.VARDICT);
-						b.add ("{sv}", "path", new Variant.string (file.get_string_element (0)));
-						b.add ("{sv}", "line", new Variant.int64 (file.get_int_element (1)));
-						b.add ("{sv}", "character", new Variant.int64 (file.get_int_element (2)));
-						builder.add ("{sv}", "file", b.end ());
-					}
-					builder.add ("{sv}", "text", new Variant.string (diag.get_string_element (3)));
-					builder.close ();
-				}
-
-				parent.diagnostics (builder.end ());
-			}
-
-			private void on_watch_bundle_updated (string bundle) {
-				parent.output (bundle);
-			}
-
-			private static Bytes decompress (uint8[] data, uint uncompressed_size) {
-				var decoder = new Brotli.Decoder ();
-				decoder.set_parameter (LARGE_WINDOW, 1);
-
-				uint8[] uncompressed_data = new uint8[uncompressed_size + 1];
-				size_t available_in = data.length;
-				size_t available_out = uncompressed_size;
-				uint8 * next_in = data;
-				uint8 * next_out = uncompressed_data;
-				decoder.decompress_stream (&available_in, &next_in, &available_out, &next_out);
-				uncompressed_data.length = (int) (next_out - (uint8 *) uncompressed_data);
-
-				return new Bytes.take ((owned) uncompressed_data);
+			Module backend;
+			try {
+				backend = new Module ("/proc/self/fd/%d".printf (fd.handle), LOCAL);
+			} catch (ModuleError e) {
+				assert_not_reached ();
 			}
+			build = resolve_symbol (backend, "_frida_compiler_backend_build");
+			watch = resolve_symbol (backend, "_frida_compiler_backend_watch");
+			WatchSession.dispose = resolve_symbol (backend, "_frida_compiler_backend_watch_session_dispose");
+#endif
+#endif
 		}
 
-		private class MonitorEntry : Object {
-			public signal void file_changed ();
-
-			public uint id;
-			public GLib.FileMonitor monitor;
-
-			public FileState state = PRISTINE;
-			public int64 last_change = -1;
-
-			public MonitorEntry (uint id, GLib.FileMonitor monitor) {
-				this.id = id;
-				this.monitor = monitor;
-
-				monitor.changed.connect (on_file_changed);
-			}
-
-			public void destroy () {
-				monitor.changed.disconnect (on_file_changed);
-				monitor.cancel ();
-			}
-
-			private void on_file_changed (File file, File? other_file, FileMonitorEvent event) {
-				switch (event) {
-					case CREATED:
-						state = PRISTINE;
-						break;
-					case CHANGED:
-						if (state != PRISTINE)
-							state = MODIFIED;
-						break;
-					case DELETED:
-					case MOVED:
-						state = DELETED;
-						break;
-					default:
-						return;
-				}
-
-				last_change = get_monotonic_time ();
-
-				file_changed ();
-			}
+		private void check_available () throws Error {
+			if (build == null)
+				throw new Error.NOT_SUPPORTED ("Compiler backend disabled at build-time");
 		}
 
-		private enum FileState {
-			PRISTINE,
-			MODIFIED,
-			DELETED,
+		private BuildFunc? build;
+		private WatchFunc? watch;
+
+		[CCode (has_target = false)]
+		private delegate void BuildFunc (string project_root, string entrypoint, OutputFormat output_format,
+			BundleFormat bundle_format, size_t disable_type_check, size_t source_map, size_t compress,
+			owned BuildCompleteFunc on_complete, DiagnosticFunc on_diagnostic);
+
+		[CCode (has_target = false)]
+		private delegate void WatchFunc (string project_root, string entrypoint, OutputFormat output_format,
+			BundleFormat bundle_format, size_t disable_type_check, size_t source_map, size_t compress,
+			owned WatchReadyFunc on_ready, StartingFunc on_starting, FinishedFunc on_finished, OutputFunc on_output,
+			DiagnosticFunc on_diagnostic);
+
+#if COMPILER_BACKEND_STATIC_COMPILATION
+		private extern void _init_go_runtime ();
+		private extern void _build ();
+		private extern void _watch ();
+#endif
+
+		namespace WatchSession {
+			[CCode (has_target = false)]
+			private delegate void DisposeFunc (size_t handle);
+
+			private DisposeFunc? dispose;
+
+#if COMPILER_BACKEND_STATIC_COMPILATION
+			private extern void _dispose ();
+#endif
+		}
+
+		private delegate void BuildCompleteFunc (owned string? bundle, owned string? error_message);
+		private delegate void WatchReadyFunc (size_t session_handle, owned string? error_message);
+		private delegate void StartingFunc ();
+		private delegate void FinishedFunc ();
+		private delegate void OutputFunc (owned string bundle);
+		private delegate void DiagnosticFunc (owned string category, int code, owned string? path, int line, int character,
+			owned string text);
+
+#if HAVE_COMPILER_BACKEND && !COMPILER_BACKEND_STATIC_COMPILATION
+		private static T resolve_symbol<T> (Module m, string name) {
+			void * address;
+			if (!m.symbol (name, out address))
+				assert_not_reached ();
+			return (T) address;
 		}
 #endif
 	}
 
+	private string compute_project_root (string entrypoint, CompilerOptions options) {
+		string? project_root = options.project_root;
+
+		if (project_root != null)
+			return project_root;
+
+		if (Path.is_absolute (entrypoint))
+			return Path.get_dirname (entrypoint);
+
+		return Environment.get_current_dir ();
+	}
+
 	public class CompilerOptions : Object {
 		public string? project_root {
 			get;
 			set;
 		}
 
+		public OutputFormat output_format {
+			get;
+			set;
+			default = UNESCAPED;
+		}
+
+		public BundleFormat bundle_format {
+			get;
+			set;
+			default = ESM;
+		}
+
+		public TypeCheckMode type_check {
+			get;
+			set;
+			default = FULL;
+		}
+
 		public SourceMaps source_maps {
 			get;
 			set;
@@ -465,10 +375,50 @@ namespace Frida {
 		}
 	}
 
-	public class BuildOptions : CompilerOptions {
+	public sealed class BuildOptions : CompilerOptions {
 	}
 
-	public class WatchOptions : CompilerOptions {
+	public sealed class WatchOptions : CompilerOptions {
+	}
+
+	public enum OutputFormat {
+		UNESCAPED,
+		HEX_BYTES,
+		C_STRING;
+
+		public static OutputFormat from_nick (string nick) throws Error {
+			return Marshal.enum_from_nick<OutputFormat> (nick);
+		}
+
+		public string to_nick () {
+			return Marshal.enum_to_nick<OutputFormat> (this);
+		}
+	}
+
+	public enum BundleFormat {
+		ESM,
+		IIFE;
+
+		public static BundleFormat from_nick (string nick) throws Error {
+			return Marshal.enum_from_nick<BundleFormat> (nick);
+		}
+
+		public string to_nick () {
+			return Marshal.enum_to_nick<BundleFormat> (this);
+		}
+	}
+
+	public enum TypeCheckMode {
+		FULL,
+		NONE;
+
+		public static TypeCheckMode from_nick (string nick) throws Error {
+			return Marshal.enum_from_nick<TypeCheckMode> (nick);
+		}
+
+		public string to_nick () {
+			return Marshal.enum_to_nick<TypeCheckMode> (this);
+		}
 	}
 
 	public enum SourceMaps {

src/compiler/generate-agent.py

@@ -1,91 +0,0 @@
-from pathlib import Path
-import shutil
-import subprocess
-import sys
-
-
-INPUTS = [
-    "agent-entrypoint.js",
-    "agent-core.ts",
-    "agent-warmup.js",
-    "package.json",
-    "package-lock.json",
-    "tsconfig.json",
-    "rollup.config.agent-core.ts",
-    "rollup.config.typescript.ts",
-]
-
-
-def main(argv):
-    output_dir, priv_dir, input_dir, npm, v8_mksnapshot = [Path(d).resolve() if d else None for d in argv[1:6]]
-    host_os_family, host_arch, host_cpu_mode = argv[6:9]
-
-    try:
-        generate_agent(output_dir, priv_dir, input_dir, npm, v8_mksnapshot, host_os_family, host_arch, host_cpu_mode)
-    except subprocess.CalledProcessError as e:
-        print(e, file=sys.stderr)
-        print("Output:\n\t| " + "\n\t| ".join(e.output.strip().split("\n")), file=sys.stderr)
-        sys.exit(2)
-    except Exception as e:
-        print(e, file=sys.stderr)
-        sys.exit(1)
-
-
-def generate_agent(output_dir, priv_dir, input_dir, npm, v8_mksnapshot, host_os_family, host_arch, host_cpu_mode):
-    entrypoint = input_dir / "agent-entrypoint.js"
-    priv_dir.mkdir(exist_ok=True)
-    for name in INPUTS:
-        if name == "agent-entrypoint.js":
-            continue
-        shutil.copy(input_dir / name, priv_dir / name)
-
-    run_kwargs = {
-        "cwd": priv_dir,
-        "stdout": subprocess.PIPE,
-        "stderr": subprocess.STDOUT,
-        "encoding": "utf-8",
-        "check": True,
-    }
-
-    subprocess.run([npm, "install"], **run_kwargs)
-    #subprocess.run([npm, "link", "/Users/oleavr/src/frida-compile"], **run_kwargs)
-
-    components = ["typescript", "agent-core"]
-    for component in components:
-        subprocess.run([
-                           npm, "run", "build:" + component,
-                           "--",
-                           "--environment", f"FRIDA_HOST_OS_FAMILY:{host_os_family},FRIDA_HOST_ARCH:{host_arch},FRIDA_HOST_CPU_MODE:{host_cpu_mode}",
-                           "--silent",
-                       ],
-                       **run_kwargs)
-    chunks = []
-    for component in components:
-        script = (priv_dir / f"{component}.js").read_text(encoding="utf-8")
-        chunks.append(script)
-    components_source = "\n".join(chunks)
-
-    agent = output_dir / "agent.js"
-    snapshot = output_dir / "snapshot.bin"
-
-    if v8_mksnapshot is not None:
-        shutil.copy(entrypoint, agent)
-        (priv_dir / "embed.js").write_text(components_source, encoding="utf-8")
-        subprocess.run([
-                           v8_mksnapshot,
-                           "--turbo-instruction-scheduling",
-                           f"--startup-blob={snapshot}",
-                           "embed.js",
-                           input_dir / "agent-warmup.js",
-                       ],
-                       **run_kwargs)
-    else:
-        agent.write_text("\n".join([
-            components_source,
-            entrypoint.read_text(encoding="utf-8"),
-        ]), encoding="utf-8")
-        snapshot.write_bytes(b"")
-
-
-if __name__ == "__main__":
-    main(sys.argv)

src/compiler/go.mod

@@ -0,0 +1,14 @@
+module github.com/frida/frida-core-compiler
+
+go 1.24.3
+
+require (
+	github.com/evanw/esbuild v0.25.5
+	github.com/frida/typescript-go v0.0.0-20250601212135-a4721f45f19c
+)
+
+require (
+	github.com/dlclark/regexp2 v1.11.5 // indirect
+	github.com/go-json-experiment/json v0.0.0-20250517221953-25912455fbc8 // indirect
+	golang.org/x/sys v0.33.0 // indirect
+)

src/compiler/go.sum

@@ -0,0 +1,17 @@
+github.com/dlclark/regexp2 v1.11.5 h1:Q/sSnsKerHeCkc/jSTNq1oCm7KiVgUMZRDUoRu0JQZQ=
+github.com/dlclark/regexp2 v1.11.5/go.mod h1:DHkYz0B9wPfa6wondMfaivmHpzrQ3v9q8cnmRbL6yW8=
+github.com/evanw/esbuild v0.25.5 h1:E+JpeY5S/1LFmnX1vtuZqUKT7qDVcfXdhzMhM3uIKFs=
+github.com/evanw/esbuild v0.25.5/go.mod h1:D2vIQZqV/vIf/VRHtViaUtViZmG7o+kKmlBfVQuRi48=
+github.com/frida/typescript-go v0.0.0-20250601212135-a4721f45f19c h1:IWBI9AwSFLWymI4enx1jrAw0E4H2E+qHwsihv+AxSoE=
+github.com/frida/typescript-go v0.0.0-20250601212135-a4721f45f19c/go.mod h1:L4RMzD/pFBl7CqIf9XTrX41RO2xcok3OOVVcowv0H4k=
+github.com/go-json-experiment/json v0.0.0-20250517221953-25912455fbc8 h1:o8UqXPI6SVwQt04RGsqKp3qqmbOfTNMqDrWsc4O47kk=
+github.com/go-json-experiment/json v0.0.0-20250517221953-25912455fbc8/go.mod h1:TiCD2a1pcmjd7YnhGH0f/zKNcCD06B029pHhzV23c2M=
+github.com/google/go-cmp v0.7.0 h1:wk8382ETsv4JYUZwIsn6YpYiWiBsYLSJiTsyBybVuN8=
+github.com/google/go-cmp v0.7.0/go.mod h1:pXiqmnSA92OHEEa9HXL2W4E7lf9JzCmGVUdgjX3N/iU=
+github.com/peter-evans/patience v0.3.0 h1:rX0JdJeepqdQl1Sk9c9uvorjYYzL2TfgLX1adqYm9cA=
+github.com/peter-evans/patience v0.3.0/go.mod h1:Kmxu5sY1NmBLFSStvXjX1wS9mIv7wMcP/ubucyMOAu0=
+golang.org/x/sys v0.0.0-20220715151400-c0bba94af5f8/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.33.0 h1:q3i8TbbEz+JRD9ywIRlyRAQbM0qF7hu24q3teo2hbuw=
+golang.org/x/sys v0.33.0/go.mod h1:BJP2sWEmIv4KK5OTEluFJCKSidICx8ciO85XgH3Ak8k=
+gotest.tools/v3 v3.5.2 h1:7koQfIKdy+I8UTetycgUqXWSDwpgv193Ka+qRsmBY8Q=
+gotest.tools/v3 v3.5.2/go.mod h1:LtdLGcnqToBH83WByAAi/wiwSFCArdFIUV/xxN4pcjA=

src/compiler/meson.build

@@ -1,61 +1,65 @@
 compiler_sources = files(
   'compiler.vala',
+  'backend-glue.c',
 )
 
 if have_compiler_backend
-  compiler_mksnapshot = generate_compiler_snapshot ? v8_mksnapshot : ''
-
-  compiler_agent = custom_target('frida-compiler-agent',
+  compiler_backend = custom_target('frida-compiler-backend',
     input: [
-      'agent-entrypoint.js',
-      'agent-core.ts',
-      'agent-warmup.js',
+      'go.mod',
+      'go.sum',
+      'backend.go',
+      'backend.version',
+      'tscompiler.go',
+      'tsconfig.go',
+      'shims.go',
       'package.json',
       'package-lock.json',
-      'tsconfig.json',
-      'rollup.config.agent-core.ts',
-      'rollup.config.typescript.ts',
     ],
     output: [
-      'agent.js',
-      'snapshot.bin',
+      'frida-compiler-backend' + (compiler_backend_static_compilation ? '.a' : ('-raw' + shlib_suffix)),
+      'frida-compiler-backend.h',
     ],
     command: [
       python,
-      files('generate-agent.py'),
+      files('build-backend.py'),
+      go_config,
       meson.current_build_dir(),
       '@PRIVATE_DIR@',
-      meson.current_source_dir(),
+      go,
       npm,
-      compiler_mksnapshot,
-      host_os_family,
-      host_arch_gumjs,
-      host_cpu_mode,
+      '@INPUT@',
     ],
   )
-  compiler_data = custom_target('frida-data-compiler',
-    input: [
-      'compiler.resources.' + frida_profile,
-      compiler_agent,
-    ],
-    output: [
-      'frida-data-compiler.vapi',
-      'frida-data-compiler.h',
-      'frida-data-compiler.c',
-      'frida-data-compiler-blob' + resource_blob_extension,
-      'frida-data-compiler-agent.js.br',
-      'frida-data-compiler-snapshot.bin.br',
-    ],
-    command: [
-      resource_compiler_cmd_array,
-      '-c', '@INPUT0@',
-      '-o', meson.current_build_dir() / 'frida-data-compiler',
-      '@INPUT1@',
-      '@INPUT2@',
-    ],
-  )
-  compiler_sources += compiler_data
+  if compiler_backend_static_compilation
+    backend_libs += compiler_backend[0]
+  else
+    filename = 'frida-compiler-backend' + shlib_suffix
+    identity = (host_os_family == 'darwin') ? 'FridaCompilerBackend' : filename
+    compiler_backend_shlib = custom_target('frida-compiler-backend-shlib',
+      input: compiler_backend[0],
+      output: filename,
+      command: post_process + ['shared-library', identity, 'elf-cleaner:off'],
+    )
 
-  backend_vala_args_private += '--pkg=libbrotlidec'
-  backend_deps_private += brotlidec_dep
+    compiler_data = custom_target('frida-data-compiler',
+      input: [
+        'compiler.resources',
+        compiler_backend_shlib,
+      ],
+      output: [
+        'frida-data-compiler.vapi',
+        'frida-data-compiler.h',
+        'frida-data-compiler.c',
+        'frida-data-compiler-blob' + resource_blob_extension,
+      ],
+      command: [
+        resource_compiler_cmd_array,
+        '-c', '@INPUT0@',
+        '-o', meson.current_build_dir() / 'frida-data-compiler',
+        '@INPUT1@',
+      ],
+    )
+    backend_sources += compiler_data
+  endif
 endif

src/compiler/package.json

@@ -1,27 +1,36 @@
 {
-  "name": "frida-compiler-agent",
+  "name": "frida-compiler-shims",
   "version": "1.0.0",
-  "description": "Agent used by Frida's compiler",
-  "main": "agent.ts",
-  "scripts": {
-    "build:typescript": "rollup --config rollup.config.typescript.ts --configPlugin typescript",
-    "build:agent-core": "rollup --config rollup.config.agent-core.ts --configPlugin typescript"
-  },
+  "description": "Shims used by Frida's compiler",
+  "private": true,
   "dependencies": {
-    "@frida/crosspath": "3.0.0",
-    "frida-compile": "16.4.1",
-    "frida-fs": "5.2.5"
-  },
-  "devDependencies": {
-    "@frida/rollup-plugin-node-polyfills": "^1.0.3",
-    "@rollup/plugin-node-resolve": "^14.1.0",
-    "@rollup/plugin-replace": "^4.0.0",
-    "@rollup/plugin-typescript": "^8.3.4",
-    "@types/frida-gum": "18.8.1",
-    "@types/glob": "^8.0.0",
-    "@types/node": "18.7.23",
-    "glob": "^8.0.3",
-    "rollup": "^2.79.1",
-    "rollup-plugin-terser": "^7.0.2"
+    "@frida/assert": "^3.0.2",
+    "@frida/base64-js": "^2.0.3",
+    "@frida/buffer": "^7.0.4",
+    "@frida/crypto": "^1.0.1",
+    "@frida/diagnostics_channel": "^1.0.0",
+    "@frida/events": "^4.0.4",
+    "@frida/http": "^4.0.2",
+    "@frida/http-parser-js": "^1.0.0",
+    "@frida/https": "^1.0.0",
+    "@frida/ieee754": "^2.0.2",
+    "@frida/net": "^5.0.0",
+    "@frida/os": "^1.0.2",
+    "@frida/path": "^2.0.3",
+    "@frida/process": "^1.2.1",
+    "@frida/punycode": "^3.0.0",
+    "@frida/querystring": "^1.0.0",
+    "@frida/readable-stream": "^4.1.3",
+    "@frida/reserved-words": "^1.0.0",
+    "@frida/stream": "^1.0.2",
+    "@frida/string_decoder": "^2.0.0",
+    "@frida/timers": "^3.0.0",
+    "@frida/tty": "^1.0.0",
+    "@frida/url": "^1.0.2",
+    "@frida/util": "^1.0.3",
+    "@frida/vm": "^2.0.0",
+    "@types/frida-gum": "19.0.0",
+    "@types/node": "18.19.103",
+    "frida-fs": "7.0.0"
   }
 }

src/compiler/rollup.config.agent-core.ts

@@ -1,184 +0,0 @@
-import crosspath from "@frida/crosspath";
-import fs from "fs";
-import { sync as glob } from "glob";
-import replace from "@rollup/plugin-replace";
-import resolve from "@rollup/plugin-node-resolve";
-import typescript from "@rollup/plugin-typescript";
-import polyfills from "@frida/rollup-plugin-node-polyfills";
-import { terser } from "rollup-plugin-terser";
-import { defineConfig } from "rollup";
-import type rollup from "rollup";
-
-export default defineConfig({
-    input: "agent-core.ts",
-    output: {
-        file: "agent-core.js",
-        format: "umd",
-        name: "FridaCompilerAgentCore",
-        generatedCode: {
-            preset: "es2015",
-        },
-        strict: false,
-        interop: "default",
-        globals: {
-            "typescript": "ts",
-        },
-    },
-    plugins: [
-        typescript(),
-        replace({
-            preventAssignment: true,
-            values: computeSubstitutionValues(),
-        }),
-        stubTsImportPlugin(),
-        polyfills(),
-        resolve(),
-        /*
-        terser({
-            ecma: 2020,
-            compress: {
-                module: true,
-                global_defs: {
-                    "process.env.FRIDA_COMPILE": true
-                },
-            },
-            mangle: {
-                module: true,
-            },
-        }),
-        */
-    ],
-});
-
-function computeSubstitutionValues() {
-    const hostOsFamily = process.env.FRIDA_HOST_OS_FAMILY;
-    if (hostOsFamily === undefined) {
-      throw new Error("missing FRIDA_HOST_OS_FAMILY");
-    }
-
-    const hostArch = process.env.FRIDA_HOST_ARCH;
-    if (hostArch === undefined) {
-      throw new Error("missing FRIDA_HOST_ARCH");
-    }
-
-    const hostCpuMode = process.env.FRIDA_HOST_CPU_MODE;
-    if (hostCpuMode === undefined) {
-      throw new Error("missing FRIDA_HOST_CPU_MODE");
-    }
-
-    const outputDir = __dirname;
-
-    const compilerDir = crosspath.join(__dirname, "node_modules", "frida-compile");
-    let usingLinkedCompiler = false;
-    try {
-        usingLinkedCompiler = fs.statSync(crosspath.join(compilerDir, "node_modules")).isDirectory();
-    } catch (e) {
-    }
-
-    const assetParentDir = usingLinkedCompiler ? compilerDir : outputDir;
-    const assetModulesDir = crosspath.join(assetParentDir, "node_modules");
-
-    const shimDirs = [
-        ["@frida", "assert"],
-        ["@frida", "base64-js"],
-        ["@frida", "buffer"],
-        ["@frida", "crypto"],
-        ["@frida", "diagnostics_channel"],
-        ["@frida", "events"],
-        ["@frida", "http"],
-        ["@frida", "http-parser-js"],
-        ["@frida", "https"],
-        ["@frida", "ieee754"],
-        ["@frida", "net"],
-        ["@frida", "os"],
-        ["@frida", "path"],
-        ["@frida", "process"],
-        ["@frida", "punycode"],
-        ["@frida", "querystring"],
-        ["@frida", "readable-stream"],
-        ["@frida", "stream"],
-        ["@frida", "string_decoder"],
-        ["@frida", "timers"],
-        ["@frida", "tty"],
-        ["@frida", "url"],
-        ["@frida", "util"],
-        ["@frida", "vm"],
-        ["frida-fs"],
-    ];
-    const typeDirs = [
-        ["@types", "node"],
-        ["@types", "frida-gum"],
-    ];
-
-    const assets: string[] = [];
-    for (const shimDir of shimDirs) {
-        assets.push(...glob(crosspath.join(assetModulesDir, ...shimDir, "package.json")));
-        assets.push(...glob(crosspath.join(assetModulesDir, ...shimDir, "**", "*.js")));
-    }
-    for (const typeDir of typeDirs) {
-        assets.push(...glob(crosspath.join(assetModulesDir, ...typeDir, "package.json")));
-        assets.push(...glob(crosspath.join(assetModulesDir, ...typeDir, "**", "*.d.ts")));
-    }
-    assets.push(...glob(crosspath.join(compilerDir, "ext", "lib.es*.d.ts")));
-    assets.push(...glob(crosspath.join(compilerDir, "ext", "lib.decorators*.d.ts")));
-
-    const ignoredAssetFiles = new Set([
-        "@frida/process/browser.js",
-    ]);
-
-    const agentDirectories = new Set<string>();
-    const agentFiles = new Map<string, string>();
-    for (const assetPath of assets) {
-        let assetRelpath = assetPath.substring(assetParentDir.length);
-        if (usingLinkedCompiler && assetRelpath.startsWith("/ext/")) {
-            assetRelpath = crosspath.join("/", "node_modules", "frida-compile", assetRelpath.substring(1));
-        }
-
-        const identifier = assetRelpath.split("/").slice(2).join("/");
-        if (ignoredAssetFiles.has(identifier)) {
-            continue;
-        }
-
-        let currentDir = crosspath.dirname(assetRelpath);
-        do {
-            agentDirectories.add(currentDir);
-            currentDir = crosspath.dirname(currentDir);
-        } while (currentDir !== "/");
-        agentFiles.set(assetRelpath, fs.readFileSync(assetPath, "utf-8"));
-    }
-
-    const orderedAgentDirectories = Array.from(agentDirectories);
-    orderedAgentDirectories.sort();
-
-    const orderedAgentFiles = Array.from(agentFiles);
-    orderedAgentFiles.sort((a, b) => a[0].localeCompare(b[0]));
-
-    return {
-        "Frida.version": "'0.0.0'",
-        "Process.id": "1",
-        "Process.platform": `'${hostOsFamily}'`,
-        "Process.arch": `'${hostArch}'`,
-        "Process.pointerSize": (hostCpuMode === "64") ? "8" : "4",
-        "__agentDirectories__": JSON.stringify(orderedAgentDirectories, null, 4),
-        "__agentFiles__": JSON.stringify(orderedAgentFiles, null, 4),
-    };
-}
-
-function stubTsImportPlugin(): rollup.Plugin {
-    return {
-        name: "stub-ts-import",
-        async resolveId(source, importer, options) {
-            if (crosspath.basename(source) === "typescript.js") {
-                return {
-                    id: "typescript",
-                    external: true,
-                    meta: {},
-                    moduleSideEffects: false,
-                    syntheticNamedExports: false
-                };
-            }
-
-            return this.resolve(source, importer, { skipSelf: true, ...options });
-        }
-    };
-}

src/compiler/rollup.config.typescript.ts

@@ -1,15 +0,0 @@
-import path from "path";
-import { defineConfig } from "rollup";
-
-export default defineConfig({
-    input: path.join("node_modules", "frida-compile", "ext", "typescript.js"),
-    output: {
-        file: "typescript.js",
-        format: "umd",
-        name: "ts",
-        generatedCode: {
-            preset: "es2015",
-        },
-        strict: false,
-    },
-});

src/compiler/shims.go

@@ -0,0 +1,196 @@
+package main
+
+import (
+	"embed"
+	"encoding/json"
+	"fmt"
+	"path/filepath"
+	"strings"
+
+	esbuild "github.com/evanw/esbuild/pkg/api"
+)
+
+var nodeGlobals = `
+export { Buffer } from 'node:buffer';
+export { default as process } from 'node:process';
+`
+
+//go:embed node_modules/@frida/*/package.json
+//go:embed node_modules/@frida/*/*.js
+//go:embed node_modules/@frida/*/*/*.js
+//go:embed node_modules/@frida/*/*/*/*.js
+//go:embed node_modules/frida-fs/package.json
+//go:embed node_modules/frida-fs/*/*.js
+var embeddedShims embed.FS
+
+func makeFridaShimsPlugin() esbuild.Plugin {
+	const (
+		nsBuiltins = "frida-builtins"
+		nsShim     = "frida-shim"
+	)
+
+	const (
+		builtinFilter        = `^frida-builtins://(.+)$`
+		shimFilter           = `^(assert|base64-js|buffer|crypto|diagnostics_channel|events|fs|http|https|http-parser-js|ieee754|net|os|path|process|punycode|querystring|readable-stream|stream|string_decoder|timers|tty|url|util|vm)$`
+		shimNodePrefixFilter = `^node:(assert|buffer|crypto|diagnostics_channel|events|fs|http|https|net|os|path|process|punycode|querystring|stream|string_decoder|timers|tty|url|util|vm)$`
+	)
+
+	return esbuild.Plugin{
+		Name: "frida-custom-shims",
+		Setup: func(build esbuild.PluginBuild) {
+			build.OnResolve(esbuild.OnResolveOptions{Filter: builtinFilter},
+				func(args esbuild.OnResolveArgs) (esbuild.OnResolveResult, error) {
+					return esbuild.OnResolveResult{
+						Path:        strings.TrimPrefix(args.Path, "frida-builtins://"),
+						Namespace:   nsBuiltins,
+						SideEffects: esbuild.SideEffectsFalse,
+					}, nil
+				})
+
+			build.OnLoad(esbuild.OnLoadOptions{Filter: ".*", Namespace: nsBuiltins},
+				func(args esbuild.OnLoadArgs) (esbuild.OnLoadResult, error) {
+					if args.Path != "/node-globals.js" {
+						return esbuild.OnLoadResult{
+							Errors: []esbuild.Message{{Text: "Unexpected path: " + args.Path}},
+						}, nil
+					}
+					return esbuild.OnLoadResult{
+						Contents: &nodeGlobals,
+						Loader:   esbuild.LoaderJS,
+					}, nil
+				})
+
+			registerShimResolve := func(pattern string) {
+				build.OnResolve(esbuild.OnResolveOptions{Filter: pattern},
+					func(args esbuild.OnResolveArgs) (esbuild.OnResolveResult, error) {
+						return makeResolveResult(nsShim, args.Path)
+					})
+			}
+			registerShimResolve(shimFilter)
+			registerShimResolve(shimNodePrefixFilter)
+
+			build.OnResolve(esbuild.OnResolveOptions{Filter: ".*", Namespace: nsShim},
+				func(args esbuild.OnResolveArgs) (esbuild.OnResolveResult, error) {
+					if strings.HasPrefix(args.Path, ".") {
+						abs := filepath.ToSlash(filepath.Join(filepath.Dir(args.Importer), args.Path))
+						return esbuild.OnResolveResult{
+							Path:        abs,
+							Namespace:   nsShim,
+							SideEffects: esbuild.SideEffectsFalse,
+						}, nil
+					}
+					return makeResolveResult(nsShim, args.Path)
+				})
+
+			build.OnLoad(esbuild.OnLoadOptions{Filter: ".*", Namespace: nsShim},
+				func(args esbuild.OnLoadArgs) (esbuild.OnLoadResult, error) {
+					data, err := embeddedShims.ReadFile(filepath.ToSlash(args.Path))
+					if err != nil {
+						return esbuild.OnLoadResult{
+							Errors: []esbuild.Message{{
+								Text: fmt.Sprintf("Error reading shim file %q: %v", args.Path, err),
+							}},
+						}, nil
+					}
+
+					content := string(data)
+					return esbuild.OnLoadResult{
+						Contents: &content,
+						Loader:   loaderFor(args.Path),
+					}, nil
+				})
+		},
+	}
+}
+
+func makeResolveResult(ns string, module string) (esbuild.OnResolveResult, error) {
+	path, errs := resolveShim(module)
+	if len(errs) > 0 {
+		return esbuild.OnResolveResult{Errors: errs}, nil
+	}
+	return esbuild.OnResolveResult{
+		Path:        path,
+		Namespace:   ns,
+		SideEffects: esbuild.SideEffectsFalse,
+	}, nil
+}
+
+func loaderFor(path string) esbuild.Loader {
+	switch ext := filepath.Ext(path); ext {
+	case ".js", ".mjs", ".cjs":
+		return esbuild.LoaderJS
+	case ".json":
+		return esbuild.LoaderJSON
+	default:
+		panic(fmt.Sprintf("frida-shims: unsupported file type %q", ext))
+	}
+}
+
+var shimMap = map[string]string{
+	"assert":              "@frida/assert",
+	"base64-js":           "@frida/base64-js",
+	"buffer":              "@frida/buffer",
+	"crypto":              "@frida/crypto",
+	"diagnostics_channel": "@frida/diagnostics_channel",
+	"events":              "@frida/events",
+	"fs":                  "frida-fs",
+	"http":                "@frida/http",
+	"https":               "@frida/https",
+	"http-parser-js":      "@frida/http-parser-js",
+	"ieee754":             "@frida/ieee754",
+	"net":                 "@frida/net",
+	"os":                  "@frida/os",
+	"path":                "@frida/path",
+	"process":             "@frida/process",
+	"punycode":            "@frida/punycode",
+	"querystring":         "@frida/querystring",
+	"readable-stream":     "@frida/readable-stream",
+	"stream":              "@frida/stream",
+	"string_decoder":      "@frida/string_decoder",
+	"timers":              "@frida/timers",
+	"tty":                 "@frida/tty",
+	"url":                 "@frida/url",
+	"util":                "@frida/util",
+	"vm":                  "@frida/vm",
+}
+
+type PackageJSON struct {
+	Main   string `json:"main"`
+	Module string `json:"module"`
+}
+
+func resolveShim(shimName string) (string, []esbuild.Message) {
+	var subDir string
+	if strings.HasPrefix(shimName, "@frida/") {
+		subDir = shimName
+	} else {
+		actualShimName := strings.TrimPrefix(shimName, "node:")
+
+		var ok bool
+		subDir, ok = shimMap[actualShimName]
+		if !ok {
+			return "", []esbuild.Message{{Text: "Unknown shim: " + actualShimName}}
+		}
+	}
+
+	shimPackageDir := filepath.Join("node_modules", subDir)
+	packageJSONPath := filepath.Join(shimPackageDir, "package.json")
+
+	pkgJSONBytes, _ := embeddedShims.ReadFile(filepath.ToSlash(packageJSONPath))
+
+	var pkg PackageJSON
+	json.Unmarshal(pkgJSONBytes, &pkg)
+
+	entryFile := ""
+	if pkg.Module != "" {
+		entryFile = pkg.Module
+	} else if pkg.Main != "" {
+		entryFile = pkg.Main
+	} else {
+		entryFile = "index.js"
+	}
+
+	resolvedEntryPath := filepath.Join(shimPackageDir, entryFile)
+
+	return filepath.ToSlash(resolvedEntryPath), nil
+}

src/compiler/tscompiler.go

@@ -0,0 +1,448 @@
+package main
+
+import (
+	"context"
+	"embed"
+	"fmt"
+	"maps"
+	"os"
+	"path/filepath"
+	"slices"
+	"sort"
+	"strings"
+	"sync"
+	"time"
+
+	"github.com/frida/typescript-go/pkg/ast"
+	"github.com/frida/typescript-go/pkg/bundled"
+	"github.com/frida/typescript-go/pkg/compiler"
+	"github.com/frida/typescript-go/pkg/core"
+	"github.com/frida/typescript-go/pkg/tsoptions"
+	"github.com/frida/typescript-go/pkg/tspath"
+	"github.com/frida/typescript-go/pkg/vfs"
+	"github.com/frida/typescript-go/pkg/vfs/iovfs"
+	"github.com/frida/typescript-go/pkg/vfs/osvfs"
+)
+
+//go:embed node_modules/@types/*/package.json
+//go:embed node_modules/@types/*/*.d.ts
+//go:embed node_modules/@types/*/*/*.d.ts
+var embeddedTypes embed.FS
+
+type TSCompiler struct {
+	projectRoot         string
+	entrypoint          string
+	loadCompilerOptions LoadCompilerOptionsHandler
+	fs                  vfs.FS
+	captureFs           *captureFS
+
+	mu                        sync.Mutex
+	options                   *core.CompilerOptions
+	program                   *compiler.Program
+	programErr                error
+	forceFreshProgram         bool
+	mtimes                    map[tspath.Path]time.Time
+	inputDirs, inputFiles     []string
+	pendingDirs, pendingFiles []string
+}
+
+type LoadCompilerOptionsHandler func(host tsoptions.ParseConfigHost) (*core.CompilerOptions, string, error)
+
+func NewTSCompiler(projectRoot, entrypoint string, loadCompilerOptions LoadCompilerOptionsHandler) *TSCompiler {
+	captureFs := newCaptureFS(osvfs.FS())
+	fs := newTypesFS(bundled.WrapFS(captureFs), projectRoot)
+
+	return &TSCompiler{
+		projectRoot:         projectRoot,
+		entrypoint:          tspath.NormalizePath(entrypoint),
+		loadCompilerOptions: loadCompilerOptions,
+		fs:                  fs,
+		captureFs:           captureFs,
+	}
+}
+
+func (c *TSCompiler) resetProgramState() {
+	c.options = nil
+	c.program = nil
+	c.programErr = nil
+	c.forceFreshProgram = false
+	c.mtimes = nil
+}
+
+func (c *TSCompiler) EnsureProgramUpToDate() error {
+	opts, _, err := c.loadCompilerOptions(c)
+	if err != nil {
+		c.resetProgramState()
+		c.recomputeInputs()
+		return err
+	}
+
+	var prog *compiler.Program
+	var progErr error
+
+	if c.forceFreshProgram || c.program == nil || opts != c.options {
+		c.forceFreshProgram = false
+		prog, progErr = c.createProgram(opts)
+	} else {
+		prog, progErr = c.updateProgram(c.program, opts)
+	}
+
+	c.program = prog
+	c.programErr = progErr
+	c.options = opts
+
+	c.recomputeInputs()
+
+	return progErr
+}
+
+func (c *TSCompiler) createProgram(options *core.CompilerOptions) (*compiler.Program, error) {
+	host := compiler.NewCompilerHost(options, c.projectRoot, c.fs, bundled.LibPath())
+
+	program := compiler.NewProgram(compiler.ProgramOptions{
+		RootFiles: []string{c.entrypoint},
+		Host:      host,
+		Options:   options,
+	})
+
+	c.updateMtimes(program)
+
+	return program, nil
+}
+
+func (c *TSCompiler) updateProgram(old *compiler.Program, options *core.CompilerOptions) (*compiler.Program, error) {
+	newMtimes, err := c.collectMtimes(old)
+	if err != nil {
+		return c.createProgram(options)
+	}
+
+	updated := []tspath.Path{}
+	newProg := old
+	for path, mtime := range newMtimes {
+		if !mtime.Equal(c.mtimes[path]) {
+			var reused bool
+			newProg, reused = newProg.UpdateProgram(path)
+			updated = append(updated, path)
+			if !reused {
+				c.updateMtimes(newProg)
+				return newProg, nil
+			}
+		}
+	}
+	c.mtimes = newMtimes
+	return newProg, nil
+}
+
+func (c *TSCompiler) updateMtimes(p *compiler.Program) {
+	mt, _ := c.collectMtimes(p)
+	c.mtimes = mt
+}
+
+func (c *TSCompiler) collectMtimes(p *compiler.Program) (map[tspath.Path]time.Time, error) {
+	mt := make(map[tspath.Path]time.Time, len(p.SourceFiles()))
+
+	for _, sf := range p.SourceFiles() {
+		name := sf.FileName()
+		if isBundled(name) {
+			continue
+		}
+		info := c.fs.Stat(name)
+		if info == nil {
+			return nil, fmt.Errorf("File %q disappeared", name)
+		}
+		mt[sf.Path()] = info.ModTime()
+	}
+
+	return mt, nil
+}
+
+func isBundled(name string) bool {
+	return strings.HasPrefix(name, "bundled://")
+}
+
+func (c *TSCompiler) WatchDirs() []string {
+	if c.inputDirs != nil {
+		return c.inputDirs
+	}
+	return c.pendingDirs
+}
+
+func (c *TSCompiler) WatchFiles() []string {
+	if c.inputFiles != nil {
+		return c.inputFiles
+	}
+	return c.pendingFiles
+}
+
+func (c *TSCompiler) CommitPendingInputs() {
+	c.inputDirs, c.pendingDirs = c.pendingDirs, nil
+	c.inputFiles, c.pendingFiles = c.pendingFiles, nil
+}
+
+func (c *TSCompiler) DropPendingInputs() {
+	c.pendingDirs, c.pendingFiles = nil, nil
+}
+
+func (c *TSCompiler) recomputeInputs() {
+	var capHint int
+	if c.program != nil {
+		capHint = 1 + len(c.program.GetSourceFiles())
+	} else {
+		capHint = 1
+	}
+
+	files := make([]string, 0, capHint)
+	files = append(files, filepath.Join(c.projectRoot, "tsconfig.json"))
+	if c.program != nil {
+		for _, sf := range c.program.GetSourceFiles() {
+			name := sf.FileName()
+			if !isBundled(name) {
+				files = append(files, name)
+			}
+		}
+	}
+	sort.Strings(files)
+
+	c.pendingDirs = uniqueDirs(files)
+	c.pendingFiles = files
+}
+
+func (c *TSCompiler) Compile(filePathToCompile string) (string, []*ast.Diagnostic, error) {
+	c.mu.Lock()
+	defer c.mu.Unlock()
+
+	if c.programErr != nil {
+		return "", nil, c.programErr
+	}
+	program := c.program
+
+	var targetSourceFile *ast.SourceFile
+	normalizedFilePathToCompile := tspath.NormalizePath(filePathToCompile)
+	for _, sf := range program.GetSourceFiles() {
+		if sf.FileName() == normalizedFilePathToCompile {
+			targetSourceFile = sf
+			break
+		}
+	}
+	if targetSourceFile == nil {
+		return "", nil, fmt.Errorf("TypeScript source file not found in program: %s", filePathToCompile)
+	}
+
+	c.captureFs.ClearOutputs()
+
+	res := program.Emit(compiler.EmitOptions{
+		TargetSourceFile: targetSourceFile,
+	})
+
+	ctx := context.Background()
+
+	diagnostics := program.GetSyntacticDiagnostics(ctx, targetSourceFile)
+	if len(diagnostics) == 0 {
+		diagnostics = append(diagnostics, program.GetBindDiagnostics(ctx, targetSourceFile)...)
+	}
+	if len(diagnostics) == 0 {
+		diagnostics = append(diagnostics, program.GetOptionsDiagnostics(ctx)...)
+	}
+	if len(diagnostics) == 0 {
+		diagnostics = append(diagnostics, program.GetGlobalDiagnostics(ctx)...)
+	}
+	if len(diagnostics) == 0 {
+		semanticDiags := program.GetSemanticDiagnostics(ctx, targetSourceFile)
+		for _, d := range semanticDiags {
+			switch d.Code() {
+			case
+				2305, // Module '{0}' has no exported member '{1}'.
+				2306, // File '{0}' is not a module.
+				2307: // Cannot find module '{0}' or its corresponding type declarations.
+				c.forceFreshProgram = true
+			}
+		}
+		diagnostics = append(diagnostics, semanticDiags...)
+	}
+
+	if res.EmitSkipped {
+		errMsg := "TypeScript compilation failed and was skipped"
+		if len(diagnostics) == 0 {
+			errMsg = fmt.Sprintf("TypeScript compilation failed and was skipped for %s, but no diagnostics reported", filePathToCompile)
+		}
+		return "", diagnostics, fmt.Errorf(errMsg)
+	}
+
+	var compiledJS string
+	var foundJSOutput bool
+	for path, content := range c.captureFs.GetOutputs() {
+		ext := filepath.Ext(path)
+		if ext == ".js" {
+			compiledJS = content
+			foundJSOutput = true
+			break
+		}
+	}
+	if !foundJSOutput {
+		if len(diagnostics) == 0 {
+			return "", nil, fmt.Errorf("TypeScript compilation for %s seemed to succeed (emit not skipped, no diagnostics) but no .js output file was captured. Captured outputs: %v", filePathToCompile, c.captureFs.GetOutputs())
+		}
+		return "", diagnostics, fmt.Errorf("No .js output file was captured for %s. Captured outputs: %v", filePathToCompile, c.captureFs.GetOutputs())
+	}
+
+	return compiledJS, diagnostics, nil
+}
+
+func uniqueDirs(files []string) []string {
+	m := make(map[string]struct{}, len(files))
+	for _, f := range files {
+		m[filepath.Dir(f)] = struct{}{}
+	}
+
+	out := make([]string, 0, len(m))
+	for d := range m {
+		out = append(out, d)
+	}
+	sort.Strings(out)
+	return out
+}
+
+// FS implements ParseConfigHost.
+func (c *TSCompiler) FS() vfs.FS {
+	return c.fs
+}
+
+// GetCurrentDirectory implements ParseConfigHost.
+func (c *TSCompiler) GetCurrentDirectory() string {
+	return c.projectRoot
+}
+
+type captureFS struct {
+	vfs.FS
+	outputs map[string]string
+	mutex   sync.Mutex
+}
+
+var _ vfs.FS = (*captureFS)(nil)
+
+func newCaptureFS(inner vfs.FS) *captureFS {
+	return &captureFS{
+		FS:      inner,
+		outputs: make(map[string]string),
+	}
+}
+
+func (c *captureFS) ClearOutputs() {
+	c.mutex.Lock()
+	defer c.mutex.Unlock()
+	c.outputs = make(map[string]string)
+}
+
+func (c *captureFS) GetOutputs() map[string]string {
+	c.mutex.Lock()
+	defer c.mutex.Unlock()
+
+	snap := make(map[string]string, len(c.outputs))
+	for k, v := range c.outputs {
+		snap[k] = v
+	}
+	return snap
+}
+
+func (c *captureFS) WriteFile(path string, data string, writeByteOrderMark bool) error {
+	c.mutex.Lock()
+	defer c.mutex.Unlock()
+	c.outputs[path] = data
+	return nil
+}
+
+func (c *captureFS) Remove(path string) error {
+	c.mutex.Lock()
+	defer c.mutex.Unlock()
+	delete(c.outputs, path)
+	return nil
+}
+
+type typesFS struct {
+	vfs.FS
+	projectRoot string
+	types       vfs.FS
+}
+
+var _ vfs.FS = (*typesFS)(nil)
+
+func newTypesFS(inner vfs.FS, projectRoot string) *typesFS {
+	return &typesFS{
+		FS:          inner,
+		projectRoot: projectRoot,
+		types:       iovfs.From(embeddedTypes, true),
+	}
+}
+
+func (t *typesFS) DirectoryExists(path string) bool {
+	embeddedPath := t.resolveEmbeddedPath(path)
+	if embeddedPath != "" {
+		if t.types.DirectoryExists(embeddedPath) {
+			return true
+		}
+	}
+
+	return t.FS.DirectoryExists(path)
+}
+
+func (t *typesFS) GetAccessibleEntries(path string) vfs.Entries {
+	embeddedPath := t.resolveEmbeddedPath(path)
+
+	var embeddedEntries vfs.Entries
+	if embeddedPath != "" {
+		embeddedEntries = t.types.GetAccessibleEntries(embeddedPath)
+	}
+
+	otherEntries := t.FS.GetAccessibleEntries(path)
+
+	return vfs.Entries{
+		Files:       mergeAndSort(embeddedEntries.Files, otherEntries.Files),
+		Directories: mergeAndSort(embeddedEntries.Directories, otherEntries.Directories),
+	}
+}
+
+func (t *typesFS) FileExists(path string) bool {
+	embeddedPath := t.resolveEmbeddedPath(path)
+	if embeddedPath != "" {
+		if t.types.FileExists(embeddedPath) {
+			return true
+		}
+	}
+
+	return t.FS.FileExists(path)
+}
+
+func (t *typesFS) ReadFile(path string) (contents string, ok bool) {
+	contents, ok = t.FS.ReadFile(path)
+	if ok {
+		return contents, ok
+	}
+
+	embeddedPath := t.resolveEmbeddedPath(path)
+	if embeddedPath != "" {
+		contents, ok = t.types.ReadFile(embeddedPath)
+	}
+
+	return contents, ok
+}
+
+func (c *typesFS) resolveEmbeddedPath(path string) string {
+	rel, err := filepath.Rel(c.projectRoot, path)
+	if err != nil {
+		return ""
+	}
+
+	if rel == ".." || strings.HasPrefix(rel, ".."+string(os.PathSeparator)) {
+		return ""
+	}
+
+	return "/" + filepath.ToSlash(rel)
+}
+
+func mergeAndSort(a, b []string) []string {
+	m := make(map[string]struct{}, len(a)+len(b))
+	for _, v := range append(a, b...) {
+		m[v] = struct{}{}
+	}
+	return slices.Sorted(maps.Keys(m))
+}

src/compiler/tsconfig.go

@@ -0,0 +1,158 @@
+package main
+
+import (
+	"encoding/json"
+	"fmt"
+	"path/filepath"
+	"reflect"
+	"strings"
+	"sync"
+	"time"
+
+	tscore "github.com/frida/typescript-go/pkg/core"
+	"github.com/frida/typescript-go/pkg/tsoptions"
+	"github.com/frida/typescript-go/pkg/tspath"
+)
+
+type TSConfigCache struct {
+	projectRoot  string
+	sourceMap    bool
+	tsconfigPath string
+	onChange     ConfigChangeCallback
+
+	mu          sync.Mutex
+	lastModTime time.Time
+	cachedOpts  *tscore.CompilerOptions
+	lastText    string
+}
+
+type ConfigChangeCallback func()
+
+func NewTSConfigCache(
+	projectRoot string,
+	sourceMap bool,
+	callback ConfigChangeCallback,
+) *TSConfigCache {
+	return &TSConfigCache{
+		projectRoot:  projectRoot,
+		sourceMap:    sourceMap,
+		tsconfigPath: filepath.Join(projectRoot, "tsconfig.json"),
+		lastModTime:  time.Time{},
+		cachedOpts:   nil,
+		lastText:     "",
+		onChange:     callback,
+	}
+}
+
+func (c *TSConfigCache) GetCompilerOptions(
+	host tsoptions.ParseConfigHost,
+) (*tscore.CompilerOptions, string, error) {
+	c.mu.Lock()
+	defer c.mu.Unlock()
+
+	fs := host.FS()
+
+	info := fs.Stat(c.tsconfigPath)
+	var currentModTime time.Time
+	if info != nil {
+		currentModTime = info.ModTime()
+	} else {
+		currentModTime = time.Time{}
+	}
+
+	if c.cachedOpts != nil && currentModTime.Equal(c.lastModTime) {
+		return c.cachedOpts, c.lastText, nil
+	}
+
+	var tsconfigText string
+	if info != nil {
+		data, ok := fs.ReadFile(c.tsconfigPath)
+		if !ok {
+			return nil, "", fmt.Errorf("Unable to read %q", c.tsconfigPath)
+		}
+		tsconfigText = string(data)
+	} else {
+		tsconfigText = "{}"
+	}
+
+	parsedSource := tsoptions.NewTsconfigSourceFileFromFilePath(
+		tspath.NormalizePath(c.tsconfigPath),
+		tspath.ToPath(c.tsconfigPath, "", fs.UseCaseSensitiveFileNames()),
+		tsconfigText,
+	)
+	parsedCommandLine := tsoptions.ParseJsonSourceFileConfigFileContent(
+		parsedSource,
+		host,
+		c.projectRoot,
+		nil,
+		c.tsconfigPath,
+		nil, nil, nil,
+	)
+
+	if len(parsedCommandLine.Errors) > 0 {
+		var msgs []string
+		for _, diag := range parsedCommandLine.Errors {
+			msgs = append(msgs, diag.Message())
+		}
+		return nil, "", fmt.Errorf(
+			"Failed to parse %s: %s",
+			c.tsconfigPath,
+			strings.Join(msgs, "; "),
+		)
+	}
+
+	newOpts := parsedCommandLine.CompilerOptions()
+	newOpts.Module = tscore.ModuleKindNode16
+	newOpts.ModuleResolution = tscore.ModuleResolutionKindNode16
+	newOpts.NoEmit = tscore.TSFalse
+
+	sourceMapOptVal := boolToTristate(c.sourceMap)
+	newOpts.SourceMap = sourceMapOptVal
+	newOpts.InlineSourceMap = sourceMapOptVal
+
+	if newOpts.Target == tscore.ScriptTargetNone {
+		newOpts.Target = tscore.ScriptTargetES2022
+	}
+	if newOpts.Lib == nil {
+		newOpts.Lib = []string{"lib.es2022.d.ts"}
+	}
+	if newOpts.SkipLibCheck == tscore.TSUnknown {
+		newOpts.SkipLibCheck = tscore.TSTrue
+	}
+	if newOpts.Strict == tscore.TSUnknown {
+		newOpts.Strict = tscore.TSTrue
+	}
+
+	tsconfigData, _ := json.Marshal(parsedCommandLine.ParsedConfig)
+	tsconfigText = string(tsconfigData)
+
+	hadPreviousOpts := c.cachedOpts != nil
+	optsChanged := true
+	if c.cachedOpts != nil && reflect.DeepEqual(newOpts, c.cachedOpts) {
+		optsChanged = false
+	}
+
+	if optsChanged {
+		c.cachedOpts = newOpts
+		c.lastText = tsconfigText
+	}
+	c.lastModTime = currentModTime
+
+	c.mu.Unlock()
+	defer c.mu.Lock()
+
+	if hadPreviousOpts && optsChanged {
+		if c.onChange != nil {
+			c.onChange()
+		}
+	}
+
+	return newOpts, tsconfigText, nil
+}
+
+func boolToTristate(val bool) tscore.Tristate {
+	if val {
+		return tscore.TSTrue
+	}
+	return tscore.TSFalse
+}

src/compiler/tsconfig.json

@@ -1,11 +0,0 @@
-{
-  "compilerOptions": {
-    "target": "es2020",
-    "lib": ["es2020"],
-    "module": "ES2020",
-    "moduleResolution": "node",
-    "allowSyntheticDefaultImports": true,
-    "strict": true,
-    "noEmit": true
-  }
-}

src/control-service.vala

@@ -1,6 +1,5 @@
 namespace Frida {
-#if HAVE_LOCAL_BACKEND
-	public class ControlService : Object {
+	public sealed class ControlService : Object {
 		public EndpointParameters endpoint_params {
 			get;
 			construct;
@@ -12,6 +11,7 @@ namespace Frida {
 		}
 
 		private HostSession host_session;
+		private HostSessionProvider provider;
 
 		private State state = STOPPED;
 
@@ -21,8 +21,12 @@ namespace Frida {
 
 		private Gee.Set<ControlChannel> spawn_gaters = new Gee.HashSet<ControlChannel> ();
 		private Gee.Map<uint, PendingSpawn> pending_spawn = new Gee.HashMap<uint, PendingSpawn> ();
-		private Gee.Map<AgentSessionId?, AgentSessionEntry> sessions =
+		private Gee.Map<AgentSessionId?, AgentSessionEntry> agent_sessions =
 			new Gee.HashMap<AgentSessionId?, AgentSessionEntry> (AgentSessionId.hash, AgentSessionId.equal);
+		private Gee.Map<ChannelId?, ChannelEntry> channels =
+			new Gee.HashMap<ChannelId?, ChannelEntry> (ChannelId.hash, ChannelId.equal);
+		private Gee.Map<ServiceSessionId?, ServiceSessionEntry> service_sessions =
+			new Gee.HashMap<ServiceSessionId?, ServiceSessionEntry> (ServiceSessionId.hash, ServiceSessionId.equal);
 
 		private Cancellable io_cancellable = new Cancellable ();
 
@@ -35,7 +39,8 @@ namespace Frida {
 			STOPPING
 		}
 
-		public ControlService (EndpointParameters endpoint_params, ControlServiceOptions? options = null) {
+		public ControlService (EndpointParameters endpoint_params, ControlServiceOptions? options = null) throws Error {
+#if HAVE_LOCAL_BACKEND
 			ControlServiceOptions opts = (options != null) ? options : new ControlServiceOptions ();
 
 			HostSession session;
@@ -63,7 +68,10 @@ namespace Frida {
 				options: opts
 			);
 
-			assign_session (session);
+			assign_session (session, new PrecreatedLocalHostSessionProvider ((LocalHostSession) session));
+#else
+			throw new Error.NOT_SUPPORTED ("Local backend not available");
+#endif
 		}
 
 		public async ControlService.with_device (Device device, EndpointParameters endpoint_params,
@@ -77,17 +85,7 @@ namespace Frida {
 				options: opts
 			);
 
-			assign_session (session);
-		}
-
-		internal ControlService.with_host_session (HostSession host_session, EndpointParameters endpoint_params,
-				ControlServiceOptions? options = null) {
-			Object (
-				endpoint_params: endpoint_params,
-				options: (options != null) ? options : new ControlServiceOptions ()
-			);
-
-			assign_session (host_session);
+			assign_session (session, device.provider);
 		}
 
 		construct {
@@ -99,7 +97,7 @@ namespace Frida {
 			main_handler = new ConnectionHandler (this, null);
 		}
 
-		private void assign_session (HostSession session) {
+		private void assign_session (HostSession session, HostSessionProvider provider) {
 			host_session = session;
 			host_session.spawn_added.connect (notify_spawn_added);
 			host_session.child_added.connect (notify_child_added);
@@ -107,7 +105,11 @@ namespace Frida {
 			host_session.process_crashed.connect (notify_process_crashed);
 			host_session.output.connect (notify_output);
 			host_session.agent_session_detached.connect (on_agent_session_detached);
+			host_session.channel_closed.connect (on_channel_closed);
+			host_session.service_session_closed.connect (on_service_session_closed);
 			host_session.uninjected.connect (notify_uninjected);
+
+			this.provider = provider;
 		}
 
 		public async void start (Cancellable? cancellable = null) throws Error, IOError {
@@ -123,7 +125,7 @@ namespace Frida {
 				yield service.start (cancellable);
 
 				if (options.enable_preload) {
-					var base_host_session = host_session as BaseDBusHostSession;
+					var base_host_session = host_session as LocalHostSession;
 					if (base_host_session != null)
 						base_host_session.preload.begin (io_cancellable);
 				}
@@ -162,9 +164,8 @@ namespace Frida {
 
 			yield main_handler.close (cancellable);
 
-			var base_host_session = host_session as BaseDBusHostSession;
-			if (base_host_session != null)
-				yield base_host_session.close (cancellable);
+			if (provider is PrecreatedLocalHostSessionProvider)
+				yield provider.destroy (host_session, cancellable);
 
 			state = STOPPED;
 		}
@@ -226,17 +227,15 @@ namespace Frida {
 		}
 
 		private async void teardown_control_channel (ControlChannel channel) {
-			foreach (AgentSessionId id in channel.sessions) {
-				AgentSessionEntry entry = sessions[id];
+			foreach (AgentSessionId id in channel.agent_sessions) {
+				AgentSessionEntry entry = agent_sessions[id];
 
-				var base_host_session = host_session as BaseDBusHostSession;
-				if (base_host_session != null)
-					base_host_session.unlink_agent_session (id);
+				provider.unlink_agent_session (host_session, id);
 
 				AgentSession? session = entry.session;
 
 				if (entry.persist_timeout == 0 || session == null) {
-					sessions.unset (id);
+					agent_sessions.unset (id);
 					if (session != null)
 						session.close.begin (io_cancellable);
 				} else {
@@ -245,6 +244,24 @@ namespace Frida {
 				}
 			}
 
+			foreach (ChannelId id in channel.channels.to_array ()) {
+				ChannelEntry entry = channels[id];
+
+				provider.unlink_channel (host_session, id);
+
+				channels.unset (id);
+
+				Channel? ch = entry.channel;
+				if (ch != null)
+					ch.close.begin (null);
+			}
+
+			foreach (ServiceSessionId id in channel.service_sessions.to_array ()) {
+				provider.unlink_service_session (host_session, id);
+
+				service_sessions.unset (id);
+			}
+
 			try {
 				yield disable_spawn_gating (channel);
 			} catch (GLib.Error e) {
@@ -379,12 +396,22 @@ namespace Frida {
 				yield parent.reattach (id, requester, cancellable);
 			}
 
+			public async ChannelId open_channel (string address, ControlChannel requester, Cancellable? cancellable)
+					throws Error, IOError {
+				return yield parent.open_channel (address, requester, cancellable);
+			}
+
+			public async ServiceSessionId open_service (string address, ControlChannel requester, Cancellable? cancellable)
+					throws Error, IOError {
+				return yield parent.open_service (address, requester, cancellable);
+			}
+
 			public void open_tcp_transport (AgentSessionId id, Cancellable? cancellable, out uint16 port, out string token)
 					throws Error {
 #if WINDOWS
 				throw new Error.NOT_SUPPORTED ("Not yet supported on Windows");
 #else
-				var base_host_session = host_session as BaseDBusHostSession;
+				var base_host_session = host_session as LocalHostSession;
 				if (base_host_session == null)
 					throw new Error.NOT_SUPPORTED ("Not supported for remote host sessions");
 				if (!base_host_session.can_pass_file_descriptors_to_agent_session (id))
@@ -454,7 +481,7 @@ namespace Frida {
 #if !WINDOWS
 				AgentSessionId session_id = transport.session_id;
 
-				var base_host_session = host_session as BaseDBusHostSession;
+				var base_host_session = host_session as LocalHostSession;
 				if (base_host_session == null)
 					throw new Error.NOT_SUPPORTED ("Not supported for remote host sessions");
 
@@ -537,12 +564,12 @@ namespace Frida {
 				throw_dbus_error (e);
 			}
 
-			requester.sessions.add (id);
+			requester.agent_sessions.add (id);
 
 			var opts = SessionOptions._deserialize (options);
 
-			var entry = new AgentSessionEntry (requester, id, opts.persist_timeout, io_cancellable);
-			sessions[id] = entry;
+			var entry = new AgentSessionEntry (requester, id, opts.persist_timeout);
+			agent_sessions[id] = entry;
 			entry.expired.connect (on_agent_session_expired);
 
 			yield link_session (id, entry, requester, cancellable);
@@ -551,11 +578,11 @@ namespace Frida {
 		}
 
 		private async void reattach (AgentSessionId id, ControlChannel requester, Cancellable? cancellable) throws Error, IOError {
-			AgentSessionEntry? entry = sessions[id];
+			AgentSessionEntry? entry = agent_sessions[id];
 			if (entry == null || entry.controller != null)
 				throw new Error.INVALID_OPERATION ("Invalid session ID");
 
-			requester.sessions.add (id);
+			requester.agent_sessions.add (id);
 
 			entry.attach_controller (requester);
 
@@ -574,28 +601,7 @@ namespace Frida {
 				throw_dbus_error (e);
 			}
 
-			AgentSession session;
-			var base_host_session = host_session as BaseDBusHostSession;
-			if (base_host_session != null) {
-				session = yield base_host_session.link_agent_session (id, sink, cancellable);
-			} else {
-				DBusConnection internal_connection = ((DBusProxy) host_session).g_connection;
-
-				try {
-					session = yield internal_connection.get_proxy (null, ObjectPath.for_agent_session (id),
-						DO_NOT_LOAD_PROPERTIES, cancellable);
-				} catch (IOError e) {
-					throw_dbus_error (e);
-				}
-
-				entry.internal_connection = internal_connection;
-				try {
-					entry.take_internal_registration (
-						internal_connection.register_object (ObjectPath.for_agent_message_sink (id), sink));
-				} catch (IOError e) {
-					assert_not_reached ();
-				}
-			}
+			var session = yield provider.link_agent_session (host_session, id, sink, cancellable);
 
 			entry.session = session;
 			try {
@@ -606,6 +612,52 @@ namespace Frida {
 			}
 		}
 
+		private async ChannelId open_channel (string address, ControlChannel requester, Cancellable? cancellable)
+				throws Error, IOError {
+			ChannelId id;
+			try {
+				id = yield host_session.open_channel (address, cancellable);
+			} catch (GLib.Error e) {
+				throw_dbus_error (e);
+			}
+
+			requester.channels.add (id);
+
+			var entry = new ChannelEntry (requester, id);
+			channels[id] = entry;
+
+			var stream = yield provider.link_channel (host_session, id, cancellable);
+
+			Channel channel = new ChannelEndpoint (stream);
+			entry.channel = channel;
+			entry.take_controller_registration (requester.connection.register_object (ObjectPath.for_channel (id), channel));
+
+			return id;
+		}
+
+		private async ServiceSessionId open_service (string address, ControlChannel requester, Cancellable? cancellable)
+				throws Error, IOError {
+			ServiceSessionId id;
+			try {
+				id = yield host_session.open_service (address, cancellable);
+			} catch (GLib.Error e) {
+				throw_dbus_error (e);
+			}
+
+			requester.service_sessions.add (id);
+
+			var entry = new ServiceSessionEntry (requester, id);
+			service_sessions[id] = entry;
+
+			var session = yield provider.link_service_session (host_session, id, cancellable);
+
+			entry.session = session;
+			entry.take_controller_registration (
+				requester.connection.register_object (ObjectPath.for_service_session (id), session));
+
+			return id;
+		}
+
 		private void notify_spawn_added (HostSpawnInfo info) {
 			foreach (ControlChannel channel in spawn_gaters)
 				channel.spawn_added (info);
@@ -646,15 +698,33 @@ namespace Frida {
 
 		private void on_agent_session_detached (AgentSessionId id, SessionDetachReason reason, CrashInfo crash) {
 			AgentSessionEntry entry;
-			if (sessions.unset (id, out entry)) {
+			if (agent_sessions.unset (id, out entry)) {
 				ControlChannel? controller = entry.controller;
 				if (controller != null) {
-					controller.sessions.remove (id);
+					controller.agent_sessions.remove (id);
 					controller.agent_session_detached (id, reason, crash);
 				}
 			}
 		}
 
+		private void on_channel_closed (ChannelId id) {
+			ChannelEntry entry;
+			if (channels.unset (id, out entry)) {
+				ControlChannel controller = entry.controller;
+				controller.channels.remove (id);
+				controller.channel_closed (id);
+			}
+		}
+
+		private void on_service_session_closed (ServiceSessionId id) {
+			ServiceSessionEntry entry;
+			if (service_sessions.unset (id, out entry)) {
+				ControlChannel controller = entry.controller;
+				controller.service_sessions.remove (id);
+				controller.service_session_closed (id);
+			}
+		}
+
 		private void notify_uninjected (InjectorPayloadId id) {
 			all_control_channels ().foreach (channel => {
 				channel.uninjected (id);
@@ -663,7 +733,7 @@ namespace Frida {
 		}
 
 		private void on_agent_session_expired (AgentSessionEntry entry) {
-			sessions.unset (entry.id);
+			agent_sessions.unset (entry.id);
 		}
 
 		private interface Peer : Object {
@@ -738,11 +808,21 @@ namespace Frida {
 				construct;
 			}
 
-			public Gee.Set<AgentSessionId?> sessions {
+			public Gee.Set<AgentSessionId?> agent_sessions {
 				get;
 				default = new Gee.HashSet<AgentSessionId?> (AgentSessionId.hash, AgentSessionId.equal);
 			}
 
+			public Gee.Set<ChannelId?> channels {
+				get;
+				default = new Gee.HashSet<ChannelId?> (ChannelId.hash, ChannelId.equal);
+			}
+
+			public Gee.Set<ServiceSessionId?> service_sessions {
+				get;
+				default = new Gee.HashSet<ServiceSessionId?> (ServiceSessionId.hash, ServiceSessionId.equal);
+			}
+
 			private Gee.Set<uint> registrations = new Gee.HashSet<uint> ();
 			private TimeoutSource? ping_timer;
 
@@ -867,6 +947,14 @@ namespace Frida {
 				return yield parent.host_session.inject_library_blob (pid, blob, entrypoint, data, cancellable);
 			}
 
+			public async ChannelId open_channel (string address, Cancellable? cancellable) throws GLib.Error {
+				return yield parent.open_channel (address, this, cancellable);
+			}
+
+			public async ServiceSessionId open_service (string address, Cancellable? cancellable) throws GLib.Error {
+				return yield parent.open_service (address, this, cancellable);
+			}
+
 			private async void open_tcp_transport (AgentSessionId id, Cancellable? cancellable, out uint16 port,
 					out string token) throws Error {
 				parent.open_tcp_transport (id, cancellable, out port, out token);
@@ -890,14 +978,45 @@ namespace Frida {
 			}
 		}
 
-		private class AgentSessionEntry {
-			public signal void expired ();
-
+		private abstract class Entry {
 			public ControlChannel? controller {
-				get;
-				private set;
+				get {
+					return _controller;
+				}
+				protected set {
+					unregister_all ();
+					_controller = value;
+				}
 			}
 
+			private ControlChannel? _controller;
+			private Gee.Collection<uint> registrations = new Gee.ArrayList<uint> ();
+
+			protected Entry (ControlChannel? controller) {
+				this.controller = controller;
+			}
+
+			~Entry () {
+				unregister_all ();
+			}
+
+			public void take_controller_registration (uint id) {
+				registrations.add (id);
+			}
+
+			private void unregister_all () {
+				if (_controller == null)
+					return;
+				var connection = _controller.connection;
+				foreach (uint id in registrations)
+					connection.unregister_object (id);
+				registrations.clear ();
+			}
+		}
+
+		private class AgentSessionEntry : Entry {
+			public signal void expired ();
+
 			public AgentSessionId id {
 				get;
 				private set;
@@ -913,36 +1032,20 @@ namespace Frida {
 				private set;
 			}
 
-			public DBusConnection? internal_connection {
-				get;
-				set;
-			}
-
-			public Cancellable io_cancellable {
-				get;
-				private set;
-			}
-
-			private Gee.Collection<uint> internal_registrations = new Gee.ArrayList<uint> ();
-			private Gee.Collection<uint> controller_registrations = new Gee.ArrayList<uint> ();
-
 			private TimeoutSource? expiry_timer;
 
-			public AgentSessionEntry (ControlChannel controller, AgentSessionId id, uint persist_timeout,
-					Cancellable io_cancellable) {
-				this.controller = controller;
+			public AgentSessionEntry (ControlChannel? controller, AgentSessionId id, uint persist_timeout) {
+				base (controller);
+
 				this.id = id;
 				this.persist_timeout = persist_timeout;
-				this.io_cancellable = io_cancellable;
 			}
 
 			~AgentSessionEntry () {
 				stop_expiry_timer ();
-				unregister_all ();
 			}
 
 			public void detach_controller () {
-				unregister_all ();
 				controller = null;
 				session = null;
 
@@ -956,27 +1059,6 @@ namespace Frida {
 				controller = c;
 			}
 
-			public void take_internal_registration (uint id) {
-				internal_registrations.add (id);
-			}
-
-			public void take_controller_registration (uint id) {
-				controller_registrations.add (id);
-			}
-
-			private void unregister_all () {
-				if (controller != null)
-					unregister_all_in (controller_registrations, controller.connection);
-				if (internal_connection != null)
-					unregister_all_in (internal_registrations, internal_connection);
-			}
-
-			private void unregister_all_in (Gee.Collection<uint> ids, DBusConnection connection) {
-				foreach (uint id in ids)
-					connection.unregister_object (id);
-				ids.clear ();
-			}
-
 			private void start_expiry_timer () {
 				if (expiry_timer != null)
 					return;
@@ -995,57 +1077,55 @@ namespace Frida {
 				expiry_timer = null;
 			}
 		}
-	}
-#else
-	public class ControlService : Object {
-		public ControlService (EndpointParameters endpoint_params, ControlServiceOptions? options = null) {
-		}
 
-		public ControlService.with_host_session (HostSession host_session, EndpointParameters endpoint_params,
-				ControlServiceOptions? options = null) {
-		}
-
-		public async void start (Cancellable? cancellable = null) throws Error, IOError {
-			throw new Error.NOT_SUPPORTED ("Local backend not available");
-		}
-
-		public void start_sync (Cancellable? cancellable = null) throws Error, IOError {
-			create<StartTask> ().execute (cancellable);
-		}
-
-		private class StartTask : ControlServiceTask<void> {
-			protected override async void perform_operation () throws Error, IOError {
-				yield parent.start (cancellable);
-			}
-		}
-
-		public async void stop (Cancellable? cancellable = null) throws Error, IOError {
-		}
-
-		public void stop_sync (Cancellable? cancellable = null) throws Error, IOError {
-			create<StopTask> ().execute (cancellable);
-		}
-
-		private class StopTask : ControlServiceTask<void> {
-			protected override async void perform_operation () throws Error, IOError {
-				yield parent.stop (cancellable);
-			}
-		}
-
-		private T create<T> () {
-			return Object.new (typeof (T), parent: this);
-		}
-
-		private abstract class ControlServiceTask<T> : AsyncTask<T> {
-			public weak ControlService parent {
+		private class ChannelEntry : Entry {
+			public ChannelId id {
 				get;
-				construct;
+				private set;
+			}
+
+			public Channel? channel {
+				get;
+				set;
+			}
+
+			public ChannelEntry (ControlChannel controller, ChannelId id) {
+				base (controller);
+
+				this.id = id;
+			}
+		}
+
+		private class ServiceSessionEntry : Entry {
+			public ServiceSessionId id {
+				get;
+				private set;
+			}
+
+			public ServiceSession? session {
+				get;
+				set;
+			}
+
+			public ServiceSessionEntry (ControlChannel controller, ServiceSessionId id) {
+				base (controller);
+
+				this.id = id;
 			}
 		}
 	}
-#endif
 
-	public class ControlServiceOptions : Object {
+	private sealed class PrecreatedLocalHostSessionProvider : LocalHostSessionProvider {
+		public PrecreatedLocalHostSessionProvider (LocalHostSession session) {
+			take_host_session (session);
+		}
+
+		protected override LocalHostSession make_host_session (HostSessionOptions? options) throws Error {
+			throw new Error.NOT_SUPPORTED ("Not supported");
+		}
+	}
+
+	public sealed class ControlServiceOptions : Object {
 		public string? sysroot {
 			get;
 			set;

src/darwin/agent/launchd.js

@@ -21,7 +21,7 @@ const substratePidsPending = new Map();
 rpc.exports = {
   dispose() {
     if (suspendedPids.size > 0) {
-      const kill = new NativeFunction(Module.getExportByName(null, 'kill'), 'int', ['int', 'int']);
+      const kill = new NativeFunction(Module.getGlobalExportByName('kill'), 'int', ['int', 'int']);
       for (const pid of suspendedPids) {
         kill(pid, SIGKILL);
       }
@@ -49,7 +49,7 @@ rpc.exports = {
 
 applyJailbreakQuirks();
 
-Interceptor.attach(Module.getExportByName('/usr/lib/system/libsystem_kernel.dylib', '__posix_spawn'), {
+Interceptor.attach(Process.getModuleByName('/usr/lib/system/libsystem_kernel.dylib').getExportByName('__posix_spawn'), {
   onEnter(args) {
     const env = parseStringv(args[4]);
     const prewarm = isPrewarmLaunch(env);
@@ -238,7 +238,7 @@ function instrumentInserter(at) {
 }
 
 function findJbdCallImpl() {
-  const impl = Module.findExportByName(null, 'jbd_call');
+  const impl = Module.findGlobalExportByName('jbd_call');
   if (impl !== null)
     return impl;
 
@@ -257,7 +257,7 @@ function findSubstrateLauncher() {
   if (Process.arch !== 'arm64')
     return null;
 
-  const imp = Module.enumerateImports('/sbin/launchd').filter(imp => imp.name === 'posix_spawn')[0];
+  const imp = Process.mainModule.enumerateImports().find(imp => imp.name === 'posix_spawn');
   if (imp === undefined)
     return null;
   const impl = imp.slot.readPointer().strip();

src/darwin/agent/osanalytics/index.js

@@ -1,3 +1,5 @@
+import ObjC from 'frida-objc-bridge';
+
 const YES = ptr(1);
 
 const {
@@ -53,7 +55,8 @@ function tryInitialize() {
 }
 
 if (!tryInitialize()) {
-  const listener = Interceptor.attach(Module.getExportByName('/usr/lib/system/libsystem_trace.dylib', 'os_log_type_enabled'), () => {
+  const listener = Interceptor.attach(
+      Process.getModuleByName('/usr/lib/system/libsystem_trace.dylib').getExportByName('os_log_type_enabled'), () => {
     tryInitialize();
     listener.detach();
   });

src/darwin/agent/osanalytics/meson.build

@@ -0,0 +1,18 @@
+osanalytics_js = custom_target('osanalytics.js',
+  input: [
+    'package.json',
+    'package-lock.json',
+    'index.js',
+  ],
+  output: [
+    'osanalytics.js',
+  ],
+  command: [
+    python,
+    compile_js_agent,
+    '@OUTPUT@',
+    '@PRIVATE_DIR@',
+    npm,
+    '@INPUT@',
+  ],
+)

src/darwin/agent/osanalytics/package-lock.json

@@ -0,0 +1,490 @@
+{
+  "name": "frida-osanalytics-agent",
+  "version": "1.0.0",
+  "lockfileVersion": 3,
+  "requires": true,
+  "packages": {
+    "": {
+      "name": "frida-osanalytics-agent",
+      "version": "1.0.0",
+      "dependencies": {
+        "frida-objc-bridge": "^8.0.5"
+      },
+      "devDependencies": {
+        "esbuild": "^0.25.5"
+      }
+    },
+    "node_modules/@esbuild/aix-ppc64": {
+      "version": "0.25.5",
+      "resolved": "https://registry.npmjs.org/@esbuild/aix-ppc64/-/aix-ppc64-0.25.5.tgz",
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+        "esbuild": "bin/esbuild"
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+        "@esbuild/android-arm": "0.25.5",
+        "@esbuild/android-arm64": "0.25.5",
+        "@esbuild/android-x64": "0.25.5",
+        "@esbuild/darwin-arm64": "0.25.5",
+        "@esbuild/darwin-x64": "0.25.5",
+        "@esbuild/freebsd-arm64": "0.25.5",
+        "@esbuild/freebsd-x64": "0.25.5",
+        "@esbuild/linux-arm": "0.25.5",
+        "@esbuild/linux-arm64": "0.25.5",
+        "@esbuild/linux-ia32": "0.25.5",
+        "@esbuild/linux-loong64": "0.25.5",
+        "@esbuild/linux-mips64el": "0.25.5",
+        "@esbuild/linux-ppc64": "0.25.5",
+        "@esbuild/linux-riscv64": "0.25.5",
+        "@esbuild/linux-s390x": "0.25.5",
+        "@esbuild/linux-x64": "0.25.5",
+        "@esbuild/netbsd-arm64": "0.25.5",
+        "@esbuild/netbsd-x64": "0.25.5",
+        "@esbuild/openbsd-arm64": "0.25.5",
+        "@esbuild/openbsd-x64": "0.25.5",
+        "@esbuild/sunos-x64": "0.25.5",
+        "@esbuild/win32-arm64": "0.25.5",
+        "@esbuild/win32-ia32": "0.25.5",
+        "@esbuild/win32-x64": "0.25.5"
+      }
+    },
+    "node_modules/frida-objc-bridge": {
+      "version": "8.0.5",
+      "resolved": "https://registry.npmjs.org/frida-objc-bridge/-/frida-objc-bridge-8.0.5.tgz",
+      "integrity": "sha512-0xnL0VgxSQXgLj3S33S0kdAvLrCHSCIZb9HVraEgEyKnf9wOcu0KZ9fI5xzx0e0y+ry/g2Vl3yw9j3dsn92Ffg==",
+      "license": "LGPL-2.0 WITH WxWindows-exception-3.1"
+    }
+  }
+}

src/darwin/agent/osanalytics/package.json

@@ -0,0 +1,15 @@
+{
+  "name": "frida-osanalytics-agent",
+  "version": "1.0.0",
+  "description": "Agent used by Frida's Darwin backend on iOS/iPadOS/tvOS",
+  "type": "module",
+  "scripts": {
+    "build": "esbuild index.js --outfile=osanalytics.js --bundle --platform=node --target=es2022 --minify"
+  },
+  "devDependencies": {
+    "esbuild": "^0.25.5"
+  },
+  "dependencies": {
+    "frida-objc-bridge": "^8.0.5"
+  }
+}

src/darwin/agent/reportcrash/index.js

@@ -1,6 +1,5 @@
-const LIBSYSTEM_KERNEL_PATH = '/usr/lib/system/libsystem_kernel.dylib';
-const CORESYMBOLICATION_PATH = '/System/Library/PrivateFrameworks/CoreSymbolication.framework/CoreSymbolication';
-const CRASH_REPORTER_SUPPORT_PATH = '/System/Library/PrivateFrameworks/CrashReporterSupport.framework/CrashReporterSupport';
+import ObjC from 'frida-objc-bridge';
+
 const YES = ptr(1);
 
 const CSTypeRef = ['pointer', 'pointer'];
@@ -17,42 +16,45 @@ const complexFuncOptions = {
   scheduling: 'cooperative',
   exceptions: 'propagate'
 };
+const libsystemKernel = Process.getModuleByName('/usr/lib/system/libsystem_kernel.dylib');
 const _pidForTask = new NativeFunction(
-    Module.getExportByName(LIBSYSTEM_KERNEL_PATH, 'pid_for_task'),
+    libsystemKernel.getExportByName('pid_for_task'),
     'int',
     ['uint', 'pointer'],
     simpleFuncOptions
 );
 const unlink = new NativeFunction(
-    Module.getExportByName(LIBSYSTEM_KERNEL_PATH, 'unlink'),
+    libsystemKernel.getExportByName('unlink'),
     'int',
     ['pointer'],
     simpleFuncOptions
 );
+const coreSymbolication = Process.getModuleByName('/System/Library/PrivateFrameworks/CoreSymbolication.framework/CoreSymbolication');
 const CSSymbolicatorGetSymbolWithAddressAtTime = new NativeFunction(
-    Module.getExportByName(CORESYMBOLICATION_PATH, 'CSSymbolicatorGetSymbolWithAddressAtTime'),
+    coreSymbolication.getExportByName('CSSymbolicatorGetSymbolWithAddressAtTime'),
     CSTypeRef,
     [CSTypeRef, 'uint64', 'uint64'],
     complexFuncOptions
 );
 const CSIsNull = new NativeFunction(
-    Module.getExportByName(CORESYMBOLICATION_PATH, 'CSIsNull'),
+    coreSymbolication.getExportByName('CSIsNull'),
     'int',
     [CSTypeRef],
     simpleFuncOptions
 );
 const mappedMemoryRead = new NativeFunction(
-    Module.getExportByName(CORESYMBOLICATION_PATH, 'mapped_memory_read'),
+    coreSymbolication.getExportByName('mapped_memory_read'),
     'uint',
     ['pointer', 'uint64', 'uint64', 'pointer'],
     simpleFuncOptions
 );
 const mappedMemoryReadPointer = new NativeFunction(
-    Module.getExportByName(CORESYMBOLICATION_PATH, 'mapped_memory_read_pointer'),
+    coreSymbolication.getExportByName('mapped_memory_read_pointer'),
     'uint',
     ['pointer', 'uint64', 'pointer'],
     simpleFuncOptions
 );
+const crashReporterSupport = Process.getModuleByName('/System/Library/PrivateFrameworks/CrashReporterSupport.framework/CrashReporterSupport');
 
 const {
   AppleErrorReport,
@@ -67,7 +69,7 @@ const sessions = new Map();
 let osaHookState = 'pending';
 
 function initialize() {
-  const listener = Interceptor.attach(Module.getExportByName(CRASH_REPORTER_SUPPORT_PATH, 'CRCreateDirectoryStructure'), () => {
+  const listener = Interceptor.attach(crashReporterSupport.getExportByName('CRCreateDirectoryStructure'), () => {
     applyInstrumentation();
     listener.detach();
   });
@@ -144,7 +146,7 @@ function applyInstrumentation() {
     },
   });
 
-  Interceptor.attach(Module.getExportByName(CORESYMBOLICATION_PATH, 'task_is_64bit'), {
+  Interceptor.attach(coreSymbolication.getExportByName('task_is_64bit'), {
     onEnter(args) {
       this.pid = pidForTask(args[0].toUInt32());
     },
@@ -216,7 +218,7 @@ function applyInstrumentation() {
       }
     });
   } else {
-    Interceptor.attach(Module.getExportByName(LIBSYSTEM_KERNEL_PATH, 'rename'), {
+    Interceptor.attach(libsystemKernel.getExportByName('rename'), {
       onEnter(args) {
         const newPath = args[1].readUtf8String();
         const session = getSession(this.threadId, 'rename');
@@ -225,7 +227,7 @@ function applyInstrumentation() {
       },
     });
 
-    Interceptor.attach(Module.getExportByName(LIBSYSTEM_KERNEL_PATH, 'open_dprotected_np'), {
+    Interceptor.attach(libsystemKernel.getExportByName('open_dprotected_np'), {
       onEnter(args) {
         const path = args[0].readUtf8String();
         this.isCrashLog = /\.ips$/.test(path);
@@ -237,7 +239,7 @@ function applyInstrumentation() {
       },
     });
 
-    Interceptor.attach(Module.getExportByName(LIBSYSTEM_KERNEL_PATH, 'write'), {
+    Interceptor.attach(libsystemKernel.getExportByName('write'), {
       onEnter(args) {
         const fd = args[0].toInt32();
         this.buf = args[1];
@@ -266,7 +268,7 @@ function applyInstrumentation() {
     });
   }
 
-  Interceptor.attach(Module.getExportByName(CRASH_REPORTER_SUPPORT_PATH, 'OSAPreferencesGetBoolValue'), {
+  Interceptor.attach(crashReporterSupport.getExportByName('OSAPreferencesGetBoolValue'), {
     onEnter(args) {
       this.name = new ObjC.Object(args[0]).toString();
       this.domain = new ObjC.Object(args[1]).toString();

src/darwin/agent/reportcrash/meson.build

@@ -0,0 +1,18 @@
+reportcrash_js = custom_target('reportcrash.js',
+  input: [
+    'package.json',
+    'package-lock.json',
+    'index.js',
+  ],
+  output: [
+    'reportcrash.js',
+  ],
+  command: [
+    python,
+    compile_js_agent,
+    '@OUTPUT@',
+    '@PRIVATE_DIR@',
+    npm,
+    '@INPUT@',
+  ],
+)

src/darwin/agent/reportcrash/package-lock.json

@@ -0,0 +1,490 @@
+{
+  "name": "frida-reportcrash-agent",
+  "version": "1.0.0",
+  "lockfileVersion": 3,
+  "requires": true,
+  "packages": {
+    "": {
+      "name": "frida-reportcrash-agent",
+      "version": "1.0.0",
+      "dependencies": {
+        "frida-objc-bridge": "^8.0.5"
+      },
+      "devDependencies": {
+        "esbuild": "^0.25.5"
+      }
+    },
+    "node_modules/@esbuild/aix-ppc64": {
+      "version": "0.25.5",
+      "resolved": "https://registry.npmjs.org/@esbuild/aix-ppc64/-/aix-ppc64-0.25.5.tgz",
+      "integrity": "sha512-9o3TMmpmftaCMepOdA5k/yDw8SfInyzWWTjYTFCX3kPSDJMROQTb8jg+h9Cnwnmm1vOzvxN7gIfB5V2ewpjtGA==",
+      "cpu": [
+        "ppc64"
+      ],
+      "dev": true,
+      "license": "MIT",
+      "optional": true,
+      "os": [
+        "aix"
+      ],
+      "engines": {
+        "node": ">=18"
+      }
+    },
+    "node_modules/@esbuild/android-arm": {
+      "version": "0.25.5",
+      "resolved": "https://registry.npmjs.org/@esbuild/android-arm/-/android-arm-0.25.5.tgz",
+      "integrity": "sha512-AdJKSPeEHgi7/ZhuIPtcQKr5RQdo6OO2IL87JkianiMYMPbCtot9fxPbrMiBADOWWm3T2si9stAiVsGbTQFkbA==",
+      "cpu": [
+        "arm"
+      ],
+      "dev": true,
+      "license": "MIT",
+      "optional": true,
+      "os": [
+        "android"
+      ],
+      "engines": {
+        "node": ">=18"
+      }
+    },
+    "node_modules/@esbuild/android-arm64": {
+      "version": "0.25.5",
+      "resolved": "https://registry.npmjs.org/@esbuild/android-arm64/-/android-arm64-0.25.5.tgz",
+      "integrity": "sha512-VGzGhj4lJO+TVGV1v8ntCZWJktV7SGCs3Pn1GRWI1SBFtRALoomm8k5E9Pmwg3HOAal2VDc2F9+PM/rEY6oIDg==",
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+        "arm64"
+      ],
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+      "license": "MIT",
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+        "android"
+      ],
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+        "x64"
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+      ],
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+        "arm64"
+      ],
+      "dev": true,
+      "license": "MIT",
+      "optional": true,
+      "os": [
+        "darwin"
+      ],
+      "engines": {
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+        "freebsd"
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+        "@esbuild/openbsd-x64": "0.25.5",
+        "@esbuild/sunos-x64": "0.25.5",
+        "@esbuild/win32-arm64": "0.25.5",
+        "@esbuild/win32-ia32": "0.25.5",
+        "@esbuild/win32-x64": "0.25.5"
+      }
+    },
+    "node_modules/frida-objc-bridge": {
+      "version": "8.0.5",
+      "resolved": "https://registry.npmjs.org/frida-objc-bridge/-/frida-objc-bridge-8.0.5.tgz",
+      "integrity": "sha512-0xnL0VgxSQXgLj3S33S0kdAvLrCHSCIZb9HVraEgEyKnf9wOcu0KZ9fI5xzx0e0y+ry/g2Vl3yw9j3dsn92Ffg==",
+      "license": "LGPL-2.0 WITH WxWindows-exception-3.1"
+    }
+  }
+}

src/darwin/agent/reportcrash/package.json

@@ -0,0 +1,15 @@
+{
+  "name": "frida-reportcrash-agent",
+  "version": "1.0.0",
+  "description": "Agent used by Frida's Darwin backend on iOS/iPadOS/tvOS",
+  "type": "module",
+  "scripts": {
+    "build": "esbuild index.js --outfile=reportcrash.js --bundle --platform=node --target=es2022 --minify"
+  },
+  "devDependencies": {
+    "esbuild": "^0.25.5"
+  },
+  "dependencies": {
+    "frida-objc-bridge": "^8.0.5"
+  }
+}

src/darwin/agent/xpcproxy.js

@@ -2,7 +2,7 @@ const POSIX_SPAWN_START_SUSPENDED = 0x0080;
 
 applyJailbreakQuirks();
 
-Interceptor.attach(Module.getExportByName('/usr/lib/system/libsystem_kernel.dylib', '__posix_spawn'), {
+Interceptor.attach(Process.getModuleByName('/usr/lib/system/libsystem_kernel.dylib').getExportByName('__posix_spawn'), {
   onEnter(args) {
     const attrs = args[2].add(Process.pointerSize).readPointer();
 
@@ -42,7 +42,7 @@ function sabotageJbdCall(jbdCallImpl) {
 }
 
 function instrumentSubstrateBootstrapper(bootstrapper) {
-  Interceptor.attach(Module.getExportByName('/usr/lib/system/libdyld.dylib', 'dlopen'), {
+  Interceptor.attach(Process.getModuleByName('/usr/lib/system/libdyld.dylib').getExportByName('dlopen'), {
     onEnter(args) {
       this.path = args[0].readUtf8String();
     },
@@ -66,7 +66,7 @@ function instrumentSubstrateExec(exec) {
 }
 
 function findJbdCallImpl() {
-  const impl = Module.findExportByName(null, 'jbd_call');
+  const impl = Module.findGlobalExportByName('jbd_call');
   if (impl !== null)
     return impl;
 

src/darwin/darwin-host-session.vala

@@ -1,98 +1,24 @@
 namespace Frida {
-	public class DarwinHostSessionBackend : Object, HostSessionBackend {
-		private DarwinHostSessionProvider local_provider;
-
-		public async void start (Cancellable? cancellable) throws IOError {
-			assert (local_provider == null);
-			local_provider = new DarwinHostSessionProvider ();
-			provider_available (local_provider);
-		}
-
-		public async void stop (Cancellable? cancellable) throws IOError {
-			assert (local_provider != null);
-			provider_unavailable (local_provider);
-			yield local_provider.close (cancellable);
-			local_provider = null;
+	public sealed class DarwinHostSessionBackend : LocalHostSessionBackend {
+		protected override LocalHostSessionProvider make_provider () {
+			return new DarwinHostSessionProvider ();
 		}
 	}
 
-	public class DarwinHostSessionProvider : Object, HostSessionProvider {
-		public string id {
-			get { return "local"; }
-		}
-
-		public string name {
-			get { return "Local System"; }
-		}
-
-		public Variant? icon {
-			get { return _icon; }
-		}
-		private Variant? _icon;
-
-		public HostSessionProviderKind kind {
-			get { return HostSessionProviderKind.LOCAL; }
-		}
-
-		private DarwinHostSession host_session;
-
-		construct {
-			_icon = _try_extract_icon ();
-		}
-
-		public async void close (Cancellable? cancellable) throws IOError {
-			if (host_session == null)
-				return;
-			host_session.agent_session_detached.disconnect (on_agent_session_detached);
-			yield host_session.close (cancellable);
-			host_session = null;
-		}
-
-		public async HostSession create (HostSessionOptions? options, Cancellable? cancellable) throws Error, IOError {
-			if (host_session != null)
-				throw new Error.INVALID_OPERATION ("Already created");
-
+	public sealed class DarwinHostSessionProvider : LocalHostSessionProvider {
+		protected override LocalHostSession make_host_session (HostSessionOptions? options) throws Error {
 			var tempdir = new TemporaryDirectory ();
-
-			host_session = new DarwinHostSession (new DarwinHelperProcess (tempdir), tempdir);
-			host_session.agent_session_detached.connect (on_agent_session_detached);
-
-			return host_session;
+			return new DarwinHostSession (new DarwinHelperProcess (tempdir), tempdir);
 		}
 
-		public async void destroy (HostSession session, Cancellable? cancellable) throws Error, IOError {
-			if (session != host_session)
-				throw new Error.INVALID_ARGUMENT ("Invalid host session");
-
-			host_session.agent_session_detached.disconnect (on_agent_session_detached);
-
-			yield host_session.close (cancellable);
-			host_session = null;
-		}
-
-		public async AgentSession link_agent_session (HostSession host_session, AgentSessionId id, AgentMessageSink sink,
-				Cancellable? cancellable) throws Error, IOError {
-			if (host_session != this.host_session)
-				throw new Error.INVALID_ARGUMENT ("Invalid host session");
-
-			return yield this.host_session.link_agent_session (id, sink, cancellable);
-		}
-
-		public void unlink_agent_session (HostSession host_session, AgentSessionId id) {
-			if (host_session != this.host_session)
-				return;
-
-			this.host_session.unlink_agent_session (id);
-		}
-
-		private void on_agent_session_detached (AgentSessionId id, SessionDetachReason reason, CrashInfo crash) {
-			agent_session_detached (id, reason, crash);
+		protected override Variant? load_icon () {
+			return _try_extract_icon ();
 		}
 
 		public extern static Variant? _try_extract_icon ();
 	}
 
-	public class DarwinHostSession : BaseDBusHostSession {
+	public sealed class DarwinHostSession : LocalHostSession {
 		public DarwinHelper helper {
 			get;
 			construct;
@@ -410,7 +336,7 @@ namespace Frida {
 	}
 
 #if IOS || TVOS
-	private class FruitController : Object, MappedAgentContainer {
+	private sealed class FruitController : Object, MappedAgentContainer {
 		public signal void spawn_added (HostSpawnInfo info);
 		public signal void spawn_removed (HostSpawnInfo info);
 		public signal void process_crashed (CrashInfo crash);
@@ -815,7 +741,7 @@ namespace Frida {
 			crash_deliveries.unset (delivery.pid);
 		}
 
-		private class CrashDelivery : Object {
+		private sealed class CrashDelivery : Object {
 			public signal void expired ();
 
 			public uint pid {
@@ -882,7 +808,7 @@ namespace Frida {
 
 	private delegate void FoundMappedAgentFunc (MappedAgent agent);
 
-	private class MappedAgent {
+	private sealed class MappedAgent {
 		public uint id {
 			get;
 			private set;
@@ -905,7 +831,7 @@ namespace Frida {
 		}
 	}
 
-	private class LaunchdAgent : InternalAgent {
+	private sealed class LaunchdAgent : InternalAgent {
 		public signal void app_launch_started (string identifier, uint pid);
 		public signal void app_launch_completed (string identifier, uint pid, GLib.Error? error);
 		public signal void spawn_preparation_started (HostSpawnInfo info);
@@ -1015,7 +941,7 @@ namespace Frida {
 		}
 	}
 
-	private class XpcProxyAgent : InternalAgent {
+	private sealed class XpcProxyAgent : InternalAgent {
 		public string identifier {
 			get;
 			construct;
@@ -1057,7 +983,7 @@ namespace Frida {
 		}
 	}
 
-	private class ReportCrashAgent : InternalAgent {
+	private sealed class ReportCrashAgent : InternalAgent {
 		public signal void crash_detected (uint pid);
 		public signal void crash_received (CrashInfo crash);
 
@@ -1289,7 +1215,7 @@ namespace Frida {
 		}
 	}
 
-	private class OSAnalyticsAgent : InternalAgent {
+	private sealed class OSAnalyticsAgent : InternalAgent {
 		public uint pid {
 			get;
 			construct;

src/darwin/frida-helper-backend-glue.m

@@ -2027,7 +2027,9 @@ _frida_darwin_helper_backend_prepare_spawn_instance_for_injection (FridaDarwinHe
     }
   }
 
-  modern_entry_address = gum_darwin_module_resolve_symbol_address (dyld, "__ZN5dyld44APIs19_libdyld_initializeEPKNS_16LibSystemHelpersE");
+  modern_entry_address = gum_darwin_module_resolve_symbol_address (dyld, "__ZN5dyld44APIs19_libdyld_initializeEv");
+  if (modern_entry_address == 0)
+    modern_entry_address = gum_darwin_module_resolve_symbol_address (dyld, "__ZN5dyld44APIs19_libdyld_initializeEPKNS_16LibSystemHelpersE");
   instance->dyld_flavor = (modern_entry_address != 0) ? FRIDA_DYLD_V4_PLUS : FRIDA_DYLD_V3_MINUS;
   if (instance->dyld_flavor == FRIDA_DYLD_V4_PLUS)
   {
@@ -2113,7 +2115,12 @@ _frida_darwin_helper_backend_prepare_spawn_instance_for_injection (FridaDarwinHe
   if (instance->dyld_flavor == FRIDA_DYLD_V4_PLUS)
   {
     GumAddress restart_with_dyld_in_cache = gum_darwin_module_resolve_symbol_address (dyld,
-        "__ZN5dyld422restartWithDyldInCacheEPKNS_10KernelArgsEPKN5dyld39MachOFileEPK15DyldSharedCachePv");
+        "__ZN5dyld422restartWithDyldInCacheEPKNS_10KernelArgsEPKN6mach_o6HeaderEPK15DyldSharedCachePv");
+    if (restart_with_dyld_in_cache == 0)
+    {
+      restart_with_dyld_in_cache = gum_darwin_module_resolve_symbol_address (dyld,
+          "__ZN5dyld422restartWithDyldInCacheEPKNS_10KernelArgsEPKN5dyld39MachOFileEPK15DyldSharedCachePv");
+    }
     if (restart_with_dyld_in_cache == 0)
     {
       restart_with_dyld_in_cache = gum_darwin_module_resolve_symbol_address (dyld,