wifi scanner

src/core/CMakeLists.txt

@@ -1171,8 +1171,12 @@ add_library(core STATIC
 
 if (ENABLE_WIFI_SCAN)
     # find_package(libiw REQUIRED)
-    target_compile_definitions(core PRIVATE ENABLE_WIFI_SCAN)
-    target_link_libraries(core PRIVATE iw)
+    target_sources(core PRIVATE internal_network/wifi_scanner.cpp)
+    if (PLATFORM_LINUX)
+        target_link_libraries(core PRIVATE iw)
+    endif()
+else()
+    target_sources(core PRIVATE internal_network/wifi_scanner_dummy.cpp)
 endif()
 
 if (WIN32)

src/core/internal_network/network_interface.cpp

@@ -9,6 +9,30 @@
 #include <ranges>
 #include <bit>
 
+#ifdef _WIN32
+#include <iphlpapi.h>
+#elif defined(__linux__) || defined(__ANDROID__)
+#include <cerrno>
+#include <ifaddrs.h>
+#include <net/if.h>
+#elif defined(__FreeBSD__)
+#include <sys/types.h>
+#include <sys/time.h>
+#include <sys/socket.h>
+#include <net/if.h>
+#include <net/route.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <sys/sysctl.h>
+#include <net/if.h>
+#include <net/route.h>
+#include <net/if_dl.h>
+#include <netinet/in.h>
+#include <netinet/if_ether.h>
+#include <arpa/inet.h>
+#include <netdb.h>
+#endif
+
 #include "common/common_types.h"
 #include "common/logging/log.h"
 #include "common/settings.h"
@@ -16,14 +40,6 @@
 #include "core/internal_network/emu_net_state.h"
 #include "core/internal_network/network_interface.h"
 
-#ifdef _WIN32
-#include <iphlpapi.h>
-#else
-#include <cerrno>
-#include <ifaddrs.h>
-#include <net/if.h>
-#endif
-
 namespace Network {
 
 #ifdef _WIN32
@@ -86,8 +102,8 @@ std::vector<Network::NetworkInterface> GetAvailableNetworkInterfaces() {
 #else
 
 std::vector<Network::NetworkInterface> GetAvailableNetworkInterfaces() {
+#if defined(__ANDROID__) || defined(__linux__)
     struct ifaddrs* ifaddr = nullptr;
-
     if (getifaddrs(&ifaddr) != 0) {
         LOG_ERROR(Network, "getifaddrs: {}", std::strerror(errno));
         return {};
@@ -101,7 +117,7 @@ std::vector<Network::NetworkInterface> GetAvailableNetworkInterfaces() {
         u32 flags;
     };
     std::vector<RoutingEntry> routes{};
-#ifdef ANDROID
+#ifdef __ANDROID__
     // Even through Linux based, we can't reliably obtain routing information from there :(
 #else
     if (std::ifstream file("/proc/net/route"); file.is_open()) {
@@ -140,6 +156,62 @@ std::vector<Network::NetworkInterface> GetAvailableNetworkInterfaces() {
     }
     freeifaddrs(ifaddr);
     return ifaces;
+#elif defined(__FreeBSD__)
+    std::vector<Network::NetworkInterface> ifaces;
+    int fd = ::socket(PF_ROUTE, SOCK_RAW, AF_UNSPEC);
+    if (fd < 0) {
+        LOG_ERROR(Network, "socket: {}", std::strerror(errno));
+        return {};
+    }
+
+    size_t bufsz = 0;
+    int mib[6] = {
+        CTL_NET, PF_ROUTE, 0,
+        AF_UNSPEC, NET_RT_IFLIST, 0
+    };
+    if (::sysctl(mib, sizeof(mib) / sizeof(mib[0]), nullptr, &bufsz, nullptr, 0) < 0) {
+        LOG_ERROR(Network, "sysctl.1: {}", std::strerror(errno));
+        return {};
+    }
+    std::vector<char> buf(bufsz);
+    if (::sysctl(mib, sizeof(mib) / sizeof(mib[0]), buf.data(), &bufsz, nullptr, 0) < 0) {
+        LOG_ERROR(Network, "sysctl.2: {}", std::strerror(errno));
+        return {};
+    }
+
+    struct rt_msghdr const *rtm = NULL;
+    for (char *next = buf.data(); next < buf.data() + bufsz; next += rtm->rtm_msglen) {
+        rtm = (struct rt_msghdr const *)next;
+        if (rtm->rtm_type == RTM_IFINFO) {
+            struct if_msghdr const* ifm = (struct if_msghdr const *)rtm;
+            size_t msglen = rtm->rtm_msglen - sizeof(*ifm);
+            char const* p = (char const*)(ifm + 1);
+
+            Network::NetworkInterface iface{};
+            for (size_t i = 0; i < RTAX_MAX; i++)
+                if ((ifm->ifm_addrs & (1 << i)) != 0) {
+                    struct sockaddr const* sa = reinterpret_cast<struct sockaddr const*>(p);
+                    if (msglen == 0 || msglen < SA_SIZE(sa))
+                        break;
+                    if (i == RTA_NETMASK && sa->sa_family == AF_LINK) {
+                        size_t namelen = 0;
+                        struct sockaddr_dl const* sdl = reinterpret_cast<struct sockaddr_dl const*>(sa);
+                        ::link_ntoa_r(sdl, nullptr, &namelen);
+                        iface.name = std::string(namelen, ' ');
+                        ::link_ntoa_r(sdl, iface.name.data(), &namelen);
+                        std::memcpy(&iface.ip_address, sa, sizeof(struct sockaddr_in));
+                    }
+                    msglen -= SA_SIZE(sa);
+                    p += SA_SIZE(sa);
+                }
+            ifaces.push_back(iface);
+        }
+    }
+    ::close(fd);
+    return ifaces;
+#else
+    return {};
+#endif
 }
 
 #endif // _WIN32

src/core/internal_network/wifi_scanner.cpp

@@ -6,11 +6,6 @@
 #include <thread>
 #include <vector>
 
-#include "common/logging/log.h"
-#include "core/internal_network/wifi_scanner.h"
-
-using namespace std::chrono_literals;
-
 #ifdef _WIN32
 #define NOMINMAX
 #include <windows.h>
@@ -18,16 +13,28 @@ using namespace std::chrono_literals;
 #ifdef _MSC_VER
 #pragma comment(lib, "wlanapi.lib")
 #endif
+#elif defined(__linux__) && !defined(__ANDROID__)
+#include <iwlib.h>
+#elif defined(__FreeBSD__)
+#include <sys/types.h>
+#include <sys/time.h>
+#include <sys/socket.h>
+#include <net/if.h>
+#include <net/route.h>
 #endif
 
+#include "common/logging/log.h"
+#include "core/internal_network/wifi_scanner.h"
+
+using namespace std::chrono_literals;
+
 namespace Network {
-#ifdef ENABLE_WIFI_SCAN
 #ifdef _WIN32
 static u8 QualityToPercent(DWORD q) {
-    return static_cast<u8>(q);
+    return u8(q);
 }
 
-static std::vector<Network::ScanData> ScanWifiWin(std::chrono::milliseconds deadline) {
+std::vector<Network::ScanData> ScanWifiNetworks(std::chrono::milliseconds deadline) {
     std::vector<Network::ScanData> out;
 
     HANDLE hClient{};
@@ -85,38 +92,16 @@ static std::vector<Network::ScanData> ScanWifiWin(std::chrono::milliseconds dead
     WlanCloseHandle(hClient, nullptr);
     return out;
 }
-#endif /* _WIN32 */
-
-#if defined(__linux__) && !defined(_WIN32) && !defined(ANDROID)
-#include <iwlib.h>
-
+#elif defined(__linux__) && !defined(__ANDROID__)
 static u8 QualityToPercent(const iwrange& r, const wireless_scan* ws) {
     const iw_quality qual = ws->stats.qual;
     const int lvl = qual.level;
     const int max = r.max_qual.level ? r.max_qual.level : 100;
-    return static_cast<u8>(std::clamp(100 * lvl / max, 0, 100));
-}
-
-static int wifi_callback(int skfd, char* ifname, char* args[], int count)
-{
-    iwrange range;
-
-    int res = iw_get_range_info(skfd, ifname, &range);
-
-    LOG_INFO(Network, "ifname {} returned {} on iw_get_range_info", ifname, res);
-
-    if (res >= 0) {
-        strncpy(args[0], ifname, IFNAMSIZ - 1);
-        args[0][IFNAMSIZ - 1] = 0;
-
-        return 1;
-    }
-
-    return 0;
+    return u8(std::clamp(100 * lvl / max, 0, 100));
 }
 
 // TODO(crueter, Maufeat): Check if driver supports wireless extensions, fallback to nl80211 if not
-static std::vector<Network::ScanData> ScanWifiLinux(std::chrono::milliseconds deadline) {
+std::vector<Network::ScanData> ScanWifiNetworks(std::chrono::milliseconds deadline) {
     std::vector<Network::ScanData> out;
     int sock = iw_sockets_open();
     if (sock < 0) {
@@ -127,7 +112,17 @@ static std::vector<Network::ScanData> ScanWifiLinux(std::chrono::milliseconds de
     char ifname[IFNAMSIZ] = {0};
     char *args[1] = {ifname};
 
-    iw_enum_devices(sock, &wifi_callback, args, 0);
+    iw_enum_devices(sock, [](int skfd, char* ifname, char* args[], int count) -> int {
+        iwrange range;
+        int res = iw_get_range_info(skfd, ifname, &range);
+        LOG_INFO(Network, "ifname {} returned {} on iw_get_range_info", ifname, res);
+        if (res >= 0) {
+            strncpy(args[0], ifname, IFNAMSIZ - 1);
+            args[0][IFNAMSIZ - 1] = 0;
+            return 1;
+        }
+        return 0;
+    }, args, 0);
 
     if (strlen(ifname) == 0) {
         LOG_WARNING(Network, "No wireless interface found");
@@ -153,20 +148,19 @@ static std::vector<Network::ScanData> ScanWifiLinux(std::chrono::milliseconds de
 
         out.clear();
         for (auto* ws = head.result; ws; ws = ws->next) {
-            if (!ws->b.has_essid)
-                continue;
+            if (ws->b.has_essid) {
+                Network::ScanData sd{};
+                sd.ssid_len = static_cast<u8>(std::min<int>(ws->b.essid_len, 0x20));
+                std::memcpy(sd.ssid, ws->b.essid, sd.ssid_len);
+                sd.quality = QualityToPercent(range, ws);
+                sd.flags |= 1;
+                if (ws->b.has_key)
+                    sd.flags |= 2;
 
-            Network::ScanData sd{};
-            sd.ssid_len = static_cast<u8>(std::min<int>(ws->b.essid_len, 0x20));
-            std::memcpy(sd.ssid, ws->b.essid, sd.ssid_len);
-            sd.quality = QualityToPercent(range, ws);
-            sd.flags |= 1;
-            if (ws->b.has_key)
-                sd.flags |= 2;
-
-            out.emplace_back(sd);
-            char tmp[0x22]{};
-            std::memcpy(tmp, sd.ssid, sd.ssid_len);
+                out.emplace_back(sd);
+                char tmp[0x22]{};
+                std::memcpy(tmp, sd.ssid, sd.ssid_len);
+            }
         }
         have = !out.empty();
     }
@@ -174,21 +168,10 @@ static std::vector<Network::ScanData> ScanWifiLinux(std::chrono::milliseconds de
     iw_sockets_close(sock);
     return out;
 }
-#endif /* linux */
-#endif
-
+#else
 std::vector<Network::ScanData> ScanWifiNetworks(std::chrono::milliseconds deadline) {
-#ifdef ENABLE_WIFI_SCAN
-#if defined(_WIN32)
-    return ScanWifiWin(deadline);
-#elif defined(__linux__) && !defined(ANDROID)
-    return ScanWifiLinux(deadline);
-#else
-    return {}; // unsupported host, pretend no results
-#endif
-#else
     return {}; // disabled, pretend no results
-#endif
 }
+#endif
 
 } // namespace Network

src/core/internal_network/wifi_scanner_dummy.cpp

@@ -0,0 +1,8 @@
+// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+namespace Network {
+std::vector<Network::ScanData> ScanWifiNetworks(std::chrono::milliseconds deadline) {
+    return {}; // disabled, pretend no results
+}
+} // namespace Network