mirror of
https://github.com/hrydgard/ppsspp.git
synced 2024-11-26 23:10:38 +00:00
592 lines
18 KiB
Plaintext
592 lines
18 KiB
Plaintext
// main.mm boilerplate
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//
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// Overview
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//
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// main.mm: JIT enablement, starting the next step
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// AppDelegate.mm: Runs NativeInit, launches the main ViewController
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// ViewController.mm: The main application window
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#import <UIKit/UIKit.h>
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#import <dlfcn.h>
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#import <mach/mach.h>
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#import <mach-o/loader.h>
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#import <mach-o/getsect.h>
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#import <pthread.h>
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#import <spawn.h>
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#import <signal.h>
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#import <string>
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#import <stdio.h>
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#import <stdlib.h>
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#import <sys/syscall.h>
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#import <sys/utsname.h>
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#import <AudioToolbox/AudioToolbox.h>
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#import "AppDelegate.h"
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#import "PPSSPPUIApplication.h"
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#import "ViewController.h"
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#include "Common/MemoryUtil.h"
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#include "Common/System/NativeApp.h"
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#include "Common/System/System.h"
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#include "Common/System/Request.h"
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#include "Common/StringUtils.h"
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#include "Common/Profiler/Profiler.h"
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#include "Core/Config.h"
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#include "Common/Log.h"
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#include "UI/DarwinFileSystemServices.h"
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// Compile out all the hackery in app store builds.
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#if !PPSSPP_PLATFORM(IOS_APP_STORE)
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struct cs_blob_index {
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uint32_t type;
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uint32_t offset;
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};
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struct cs_superblob {
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uint32_t magic;
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uint32_t length;
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uint32_t count;
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struct cs_blob_index index[];
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};
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struct cs_entitlements {
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uint32_t magic;
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uint32_t length;
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char entitlements[];
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};
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static int (*csops)(pid_t pid, unsigned int ops, void * useraddr, size_t usersize);
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static boolean_t (*exc_server)(mach_msg_header_t *, mach_msg_header_t *);
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static int (*ptrace)(int request, pid_t pid, caddr_t addr, int data);
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#define CS_OPS_STATUS 0 /* return status */
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#define CS_KILL 0x00000200 /* kill process if it becomes invalid */
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#define CS_DEBUGGED 0x10000000 /* process is currently or has previously been debugged and allowed to run with invalid pages */
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#define PT_TRACE_ME 0 /* child declares it's being traced */
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#define PT_SIGEXC 12 /* signals as exceptions for current_proc */
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#define ptrace(a, b, c, d) syscall(SYS_ptrace, a, b, c, d)
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static void *exception_handler(void *argument) {
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mach_port_t port = *(mach_port_t *)argument;
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mach_msg_server(exc_server, 2048, port, 0);
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return NULL;
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}
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static NSDictionary *parse_entitlements(const void *entitlements, size_t length) {
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char *copy = (char *)malloc(length);
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memcpy(copy, entitlements, length);
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// strip out psychic paper entitlement hiding
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if (@available(iOS 13.5, *)) {
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} else {
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static const char *needle = "<!---><!-->";
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char *found = strnstr(copy, needle, length);
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if (found) {
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memset(found, ' ', strlen(needle));
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}
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}
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NSData *data = [NSData dataWithBytes:copy length:length];
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free(copy);
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return [NSPropertyListSerialization propertyListWithData:data
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options:NSPropertyListImmutable
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format:nil
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error:nil];
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}
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static NSDictionary *app_entitlements(void) {
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// Inspired by codesign.c in Darwin sources for Security.framework
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// Find our mach-o header
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Dl_info dl_info;
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if (dladdr((const void *)app_entitlements, &dl_info) == 0)
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return nil;
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if (dl_info.dli_fbase == NULL)
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return nil;
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char *base = (char *)dl_info.dli_fbase;
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struct mach_header_64 *header = (struct mach_header_64 *)dl_info.dli_fbase;
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if (header->magic != MH_MAGIC_64)
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return nil;
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// Simulator executables have fake entitlements in the code signature. The real entitlements can be found in an __entitlements section.
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size_t entitlements_size;
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uint8_t *entitlements_data = getsectiondata(header, "__TEXT", "__entitlements", &entitlements_size);
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if (entitlements_data != NULL) {
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NSData *data = [NSData dataWithBytesNoCopy:entitlements_data
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length:entitlements_size
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freeWhenDone:NO];
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return [NSPropertyListSerialization propertyListWithData:data
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options:NSPropertyListImmutable
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format:nil
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error:nil];
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}
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// Find the LC_CODE_SIGNATURE
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struct load_command *lc = (struct load_command *) (base + sizeof(*header));
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struct linkedit_data_command *cs_lc = NULL;
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for (uint32_t i = 0; i < header->ncmds; i++) {
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if (lc->cmd == LC_CODE_SIGNATURE) {
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cs_lc = (struct linkedit_data_command *) lc;
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break;
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}
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lc = (struct load_command *) ((char *) lc + lc->cmdsize);
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}
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if (cs_lc == NULL)
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return nil;
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// Read the code signature off disk, as it's apparently not loaded into memory
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NSFileHandle *fileHandle = [NSFileHandle fileHandleForReadingFromURL:NSBundle.mainBundle.executableURL error:nil];
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if (fileHandle == nil)
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return nil;
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[fileHandle seekToFileOffset:cs_lc->dataoff];
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NSData *csData = [fileHandle readDataOfLength:cs_lc->datasize];
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[fileHandle closeFile];
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const struct cs_superblob *cs = (const struct cs_superblob *)csData.bytes;
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if (ntohl(cs->magic) != 0xfade0cc0)
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return nil;
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// Find the entitlements in the code signature
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for (uint32_t i = 0; i < ntohl(cs->count); i++) {
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struct cs_entitlements *ents = (struct cs_entitlements *) ((char *) cs + ntohl(cs->index[i].offset));
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if (ntohl(ents->magic) == 0xfade7171) {
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return parse_entitlements(ents->entitlements, ntohl(ents->length) - offsetof(struct cs_entitlements, entitlements));
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}
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}
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return nil;
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}
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static NSDictionary *cached_app_entitlements(void) {
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static NSDictionary *entitlements = nil;
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if (!entitlements) {
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entitlements = app_entitlements();
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}
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return entitlements;
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}
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bool jb_has_container(void) {
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NSDictionary *entitlements = cached_app_entitlements();
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return ![entitlements[@"com.apple.private.security.no-sandbox"] boolValue];
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}
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static char *childArgv[] = {NULL, "debugme", NULL};
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bool jb_spawn_ptrace_child(int argc, char **argv) {
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int ret; pid_t pid;
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if (argc > 1 && strcmp(argv[1], childArgv[1]) == 0) {
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ret = ptrace(PT_TRACE_ME, 0, NULL, 0);
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NSLog(@"child: ptrace(PT_TRACE_ME) %d", ret);
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exit(ret);
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}
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if (jb_has_container()) {
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return false;
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}
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childArgv[0] = argv[0];
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if ((ret = posix_spawnp(&pid, argv[0], NULL, NULL, (char *const *)childArgv, NULL)) != 0) {
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return false;
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}
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return true;
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}
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bool jb_has_jit_entitlement(void) {
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NSDictionary *entitlements = cached_app_entitlements();
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return [entitlements[@"dynamic-codesigning"] boolValue];
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}
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bool jb_has_cs_disabled(void) {
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int flags;
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return !csops(getpid(), CS_OPS_STATUS, &flags, sizeof(flags)) && (flags & ~CS_KILL) == flags;
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}
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#define _COMM_PAGE_START_ADDRESS (0x0000000FFFFFC000ULL) /* In TTBR0 */
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#define _COMM_PAGE_APRR_SUPPORT (_COMM_PAGE_START_ADDRESS+0x10C)
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static bool is_device_A12_or_newer(void) {
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// devices without APRR are definitely < A12
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char aprr_support = *(volatile char *)_COMM_PAGE_APRR_SUPPORT;
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if (aprr_support == 0) {
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return false;
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}
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// we still have A11 devices that support APRR
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struct utsname systemInfo;
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if (uname(&systemInfo) != 0) {
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return false;
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}
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// iPhone 8, 8 Plus, and iPhone X
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if (strncmp("iPhone10,", systemInfo.machine, 9) == 0) {
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return false;
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} else {
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return true;
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}
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}
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bool jb_has_cs_execseg_allow_unsigned(void) {
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NSDictionary *entitlements = cached_app_entitlements();
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if (@available(iOS 14.2, *)) {
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if (@available(iOS 14.4, *)) {
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return false; // iOS 14.4 broke it again
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}
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// technically we need to check the Code Directory and make sure
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// CS_EXECSEG_ALLOW_UNSIGNED is set but we assume that it is properly
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// signed, which should reflect the get-task-allow entitlement
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return is_device_A12_or_newer() && [entitlements[@"get-task-allow"] boolValue];
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} else {
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return false;
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}
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}
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static bool jb_has_debugger_attached(void) {
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int flags;
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return !csops(getpid(), CS_OPS_STATUS, &flags, sizeof(flags)) && flags & CS_DEBUGGED;
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}
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bool jb_enable_ptrace_hack(void) {
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bool debugged = jb_has_debugger_attached();
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// Thanks to this comment: https://news.ycombinator.com/item?id=18431524
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// We use this hack to allow mmap with PROT_EXEC (which usually requires the
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// dynamic-codesigning entitlement) by tricking the process into thinking
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// that Xcode is debugging it. We abuse the fact that JIT is needed to
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// debug the process.
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if (ptrace(PT_TRACE_ME, 0, NULL, 0) < 0) {
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return false;
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}
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// ptracing ourselves confuses the kernel and will cause bad things to
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// happen to the system (hangs…) if an exception or signal occurs. Setup
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// some "safety nets" so we can cause the process to exit in a somewhat sane
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// state. We only need to do this if the debugger isn't attached. (It'll do
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// this itself, and if we do it we'll interfere with its normal operation
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// anyways.)
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if (!debugged) {
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// First, ensure that signals are delivered as Mach software exceptions…
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ptrace(PT_SIGEXC, 0, NULL, 0);
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// …then ensure that this exception goes through our exception handler.
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// I think it's OK to just watch for EXC_SOFTWARE because the other
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// exceptions (e.g. EXC_BAD_ACCESS, EXC_BAD_INSTRUCTION, and friends)
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// will end up being delivered as signals anyways, and we can get them
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// once they're resent as a software exception.
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mach_port_t port = MACH_PORT_NULL;
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mach_port_allocate(mach_task_self(), MACH_PORT_RIGHT_RECEIVE, &port);
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mach_port_insert_right(mach_task_self(), port, port, MACH_MSG_TYPE_MAKE_SEND);
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task_set_exception_ports(mach_task_self(), EXC_MASK_SOFTWARE, port, EXCEPTION_DEFAULT, THREAD_STATE_NONE);
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pthread_t thread;
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pthread_create(&thread, NULL, exception_handler, (void *)&port);
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}
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return true;
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}
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#endif
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float g_safeInsetLeft = 0.0;
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float g_safeInsetRight = 0.0;
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float g_safeInsetTop = 0.0;
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float g_safeInsetBottom = 0.0;
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// We no longer need to judge if jit is usable or not by according to the ios version.
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static bool g_jitAvailable = true;
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//static int g_iosVersionMinor;
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static int g_iosVersionMajor;
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static std::string version;
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std::string System_GetProperty(SystemProperty prop) {
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switch (prop) {
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case SYSPROP_NAME:
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return StringFromFormat("iOS %s", version.c_str());
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case SYSPROP_LANGREGION:
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return [[[NSLocale currentLocale] objectForKey:NSLocaleIdentifier] UTF8String];
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case SYSPROP_BUILD_VERSION:
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return PPSSPP_GIT_VERSION;
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default:
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return "";
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}
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}
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std::vector<std::string> System_GetPropertyStringVec(SystemProperty prop) {
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switch (prop) {
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case SYSPROP_TEMP_DIRS:
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default:
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return std::vector<std::string>();
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}
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}
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int64_t System_GetPropertyInt(SystemProperty prop) {
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switch (prop) {
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case SYSPROP_AUDIO_SAMPLE_RATE:
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return 44100;
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case SYSPROP_DEVICE_TYPE:
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return DEVICE_TYPE_MOBILE;
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case SYSPROP_SYSTEMVERSION:
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return g_iosVersionMajor;
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default:
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return -1;
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}
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}
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float System_GetPropertyFloat(SystemProperty prop) {
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switch (prop) {
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case SYSPROP_DISPLAY_REFRESH_RATE:
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return 60.f;
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case SYSPROP_DISPLAY_SAFE_INSET_LEFT:
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return g_safeInsetLeft;
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case SYSPROP_DISPLAY_SAFE_INSET_RIGHT:
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return g_safeInsetRight;
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case SYSPROP_DISPLAY_SAFE_INSET_TOP:
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return g_safeInsetTop;
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case SYSPROP_DISPLAY_SAFE_INSET_BOTTOM:
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return g_safeInsetBottom;
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default:
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return -1;
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}
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}
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bool System_GetPropertyBool(SystemProperty prop) {
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switch (prop) {
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case SYSPROP_HAS_FILE_BROWSER:
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return true;
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case SYSPROP_HAS_FOLDER_BROWSER:
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return true;
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case SYSPROP_HAS_OPEN_DIRECTORY:
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return false;
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case SYSPROP_HAS_BACK_BUTTON:
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return false;
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case SYSPROP_HAS_ACCELEROMETER:
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return true;
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case SYSPROP_HAS_KEYBOARD:
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return true;
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case SYSPROP_KEYBOARD_IS_SOFT:
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// If a hardware keyboard is connected, and we add support, we could return false here.
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return true;
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case SYSPROP_APP_GOLD:
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#ifdef GOLD
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return true;
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#else
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return false;
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#endif
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case SYSPROP_CAN_JIT:
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return g_jitAvailable;
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case SYSPROP_LIMITED_FILE_BROWSING:
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#if PPSSPP_PLATFORM(IOS_APP_STORE)
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return true;
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#else
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return false; // But will return true in app store builds.
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#endif
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#ifndef HTTPS_NOT_AVAILABLE
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case SYSPROP_SUPPORTS_HTTPS:
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return true;
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#endif
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default:
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return false;
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}
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}
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void System_Notify(SystemNotification notification) {
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switch (notification) {
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default: break;
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}
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}
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bool System_MakeRequest(SystemRequestType type, int requestId, const std::string ¶m1, const std::string ¶m2, int64_t param3, int64_t param4) {
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switch (type) {
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case SystemRequestType::EXIT_APP:
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exit(0);
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// The below seems right, but causes hangs. See #12140.
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// dispatch_async(dispatch_get_main_queue(), ^{
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// [sharedViewController shutdown];
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// exit(0);
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// });
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break;
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case SystemRequestType::BROWSE_FOR_FILE:
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{
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DarwinDirectoryPanelCallback callback = [requestId] (bool success, Path path) {
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if (success) {
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g_requestManager.PostSystemSuccess(requestId, path.c_str());
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} else {
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g_requestManager.PostSystemFailure(requestId);
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}
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};
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DarwinFileSystemServices services;
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services.presentDirectoryPanel(callback, /* allowFiles = */ true, /* allowDirectories = */ false);
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return true;
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}
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case SystemRequestType::BROWSE_FOR_FOLDER:
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{
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DarwinDirectoryPanelCallback callback = [requestId] (bool success, Path path) {
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if (success) {
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g_requestManager.PostSystemSuccess(requestId, path.c_str());
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} else {
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g_requestManager.PostSystemFailure(requestId);
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}
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};
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DarwinFileSystemServices services;
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services.presentDirectoryPanel(callback, /* allowFiles = */ false, /* allowDirectories = */ true);
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return true;
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}
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case SystemRequestType::CAMERA_COMMAND:
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if (!strncmp(param1.c_str(), "startVideo", 10)) {
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int width = 0, height = 0;
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sscanf(param1.c_str(), "startVideo_%dx%d", &width, &height);
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setCameraSize(width, height);
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startVideo();
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} else if (!strcmp(param1.c_str(), "stopVideo")) {
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stopVideo();
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}
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return true;
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case SystemRequestType::GPS_COMMAND:
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if (param1 == "open") {
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startLocation();
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} else if (param1 == "close") {
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stopLocation();
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}
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return true;
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case SystemRequestType::SHARE_TEXT:
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{
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NSString *text = [NSString stringWithUTF8String:param1.c_str()];
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[sharedViewController shareText:text];
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return true;
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}
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case SystemRequestType::NOTIFY_UI_EVENT:
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{
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switch ((UIEventNotification)param3) {
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case UIEventNotification::POPUP_CLOSED:
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[sharedViewController hideKeyboard];
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break;
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case UIEventNotification::TEXT_GOTFOCUS:
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[sharedViewController showKeyboard];
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break;
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case UIEventNotification::TEXT_LOSTFOCUS:
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[sharedViewController hideKeyboard];
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break;
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default:
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break;
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}
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return true;
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}
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/*
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// Not 100% sure the threading is right
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case SystemRequestType::COPY_TO_CLIPBOARD:
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{
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@autoreleasepool {
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[UIPasteboard generalPasteboard].string = @(param1.c_str());
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return 0;
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}
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}
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*/
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case SystemRequestType::SET_KEEP_SCREEN_BRIGHT:
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dispatch_async(dispatch_get_main_queue(), ^{
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INFO_LOG(SYSTEM, "SET_KEEP_SCREEN_BRIGHT: %d", (int)param3);
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[[UIApplication sharedApplication] setIdleTimerDisabled: (param3 ? YES : NO)];
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});
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return true;
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default:
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return false;
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}
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}
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void System_Toast(std::string_view text) {}
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void System_AskForPermission(SystemPermission permission) {}
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|
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PermissionStatus System_GetPermissionStatus(SystemPermission permission) { return PERMISSION_STATUS_GRANTED; }
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|
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#if !PPSSPP_PLATFORM(IOS_APP_STORE)
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FOUNDATION_EXTERN void AudioServicesPlaySystemSoundWithVibration(unsigned long, objc_object*, NSDictionary*);
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#endif
|
|
|
|
BOOL SupportsTaptic() {
|
|
// we're on an iOS version that cannot instantiate UISelectionFeedbackGenerator, so no.
|
|
if(!NSClassFromString(@"UISelectionFeedbackGenerator")) {
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|
return NO;
|
|
}
|
|
|
|
// http://www.mikitamanko.com/blog/2017/01/29/haptic-feedback-with-uifeedbackgenerator/
|
|
// use private API against UIDevice to determine the haptic stepping
|
|
// 2 - iPhone 7 or above, full taptic feedback
|
|
// 1 - iPhone 6S, limited taptic feedback
|
|
// 0 - iPhone 6 or below, no taptic feedback
|
|
NSNumber* val = (NSNumber*)[[UIDevice currentDevice] valueForKey:@"feedbackSupportLevel"];
|
|
return [val intValue] >= 2;
|
|
}
|
|
|
|
void System_Vibrate(int mode) {
|
|
if (SupportsTaptic()) {
|
|
PPSSPPUIApplication* app = (PPSSPPUIApplication*)[UIApplication sharedApplication];
|
|
if(app.feedbackGenerator == nil)
|
|
{
|
|
app.feedbackGenerator = [[UISelectionFeedbackGenerator alloc] init];
|
|
[app.feedbackGenerator prepare];
|
|
}
|
|
[app.feedbackGenerator selectionChanged];
|
|
} else {
|
|
#if !PPSSPP_PLATFORM(IOS_APP_STORE)
|
|
NSMutableDictionary *dictionary = [NSMutableDictionary dictionary];
|
|
NSArray *pattern = @[@YES, @30, @NO, @2];
|
|
|
|
dictionary[@"VibePattern"] = pattern;
|
|
dictionary[@"Intensity"] = @2;
|
|
|
|
AudioServicesPlaySystemSoundWithVibration(kSystemSoundID_Vibrate, nil, dictionary);
|
|
#endif
|
|
}
|
|
}
|
|
|
|
int main(int argc, char *argv[])
|
|
{
|
|
version = [[[UIDevice currentDevice] systemVersion] UTF8String];
|
|
if (2 != sscanf(version.c_str(), "%d", &g_iosVersionMajor)) {
|
|
// Just set it to 14.0 if the parsing fails for whatever reason.
|
|
g_iosVersionMajor = 14;
|
|
}
|
|
|
|
#if PPSSPP_PLATFORM(IOS_APP_STORE)
|
|
g_jitAvailable = false;
|
|
#else
|
|
// Hacky hacks to try to enable JIT by pretending to be a debugger.
|
|
csops = reinterpret_cast<decltype(csops)>(dlsym(dlopen(nullptr, RTLD_LAZY), "csops"));
|
|
exc_server = reinterpret_cast<decltype(exc_server)>(dlsym(dlopen(NULL, RTLD_LAZY), "exc_server"));
|
|
ptrace = reinterpret_cast<decltype(ptrace)>(dlsym(dlopen(NULL, RTLD_LAZY), "ptrace"));
|
|
// see https://github.com/hrydgard/ppsspp/issues/11905
|
|
|
|
if (jb_spawn_ptrace_child(argc, argv)) {
|
|
INFO_LOG(SYSTEM, "JIT: ptrace() child spawn trick\n");
|
|
} else if (jb_has_jit_entitlement()) {
|
|
INFO_LOG(SYSTEM, "JIT: found entitlement\n");
|
|
} else if (jb_has_cs_disabled()) {
|
|
INFO_LOG(SYSTEM, "JIT: CS_KILL disabled\n");
|
|
} else if (jb_has_cs_execseg_allow_unsigned()) {
|
|
INFO_LOG(SYSTEM, "JIT: CS_EXECSEG_ALLOW_UNSIGNED set\n");
|
|
} else if (jb_enable_ptrace_hack()) {
|
|
INFO_LOG(SYSTEM, "JIT: ptrace() hack supported\n");
|
|
} else {
|
|
INFO_LOG(SYSTEM, "JIT: ptrace() hack failed\n");
|
|
g_jitAvailable = false;
|
|
}
|
|
|
|
// Tried checking for JIT support here with AllocateExecutableMemory and ProtectMemoryPages,
|
|
// but it just succeeds, and then fails when you try to execute from it.
|
|
|
|
// So, we'll just resort to a version check.
|
|
// TODO: This seems outdated.
|
|
/*
|
|
if (g_iosVersionMajor > 14 || (g_iosVersionMajor == 14 && g_iosVersionMinor >= 4)) {
|
|
g_jitAvailable = false;
|
|
} else {
|
|
g_jitAvailable = true;
|
|
}
|
|
*/
|
|
#endif
|
|
|
|
// Ignore sigpipe.
|
|
if (signal(SIGPIPE, SIG_IGN) == SIG_ERR) {
|
|
perror("Unable to ignore SIGPIPE");
|
|
}
|
|
PROFILE_INIT();
|
|
|
|
@autoreleasepool {
|
|
return UIApplicationMain(argc, argv, NSStringFromClass([PPSSPPUIApplication class]), NSStringFromClass([AppDelegate class]));
|
|
}
|
|
}
|
|
|