Add FreeBSD support

CMakeLists.txt

@@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 3.15)
+cmake_minimum_required(VERSION 3.25)
 project(TgBot++ LANGUAGES CXX C)
 
 ####################### Set CMake Policy #######################
@@ -115,7 +115,7 @@ set(GLOBAL_DEFINITIONS -D__TGBOT__)
 if (CMAKE_CXX_COMPILER_ID STREQUAL "Clang")
   set(CMAKE_EXE_LINKER_FLAGS "-fuse-ld=lld")
   set(CMAKE_SHARED_LINKER_FLAGS "-fuse-ld=lld")
-  if (APPLE OR ANDROID)
+  if (APPLE OR ANDROID OR BSD)
     list(APPEND GLOBAL_COMPILE_OPTIONS -fexperimental-library)
   endif()
 endif()

resources/about.html.in

@@ -4,7 +4,7 @@ Hi! I'm <a href="https://t.me/_botusername_">_botname_</a>
 - Proudly backed by C/C++
 - Spam purge feature
 - Regex command support
-- Runs on Windows (MSYS2/MSVC), macOS, Linux, Android (Termux)
+- Runs on Windows (MSYS2/MSVC), macOS, Linux, Android (Termux), BSD-like systems
 - Exports a network control interface with IPv4 and IPv6
 - Client apps supported for Win32/Android</blockquote>
 <blockquote><b>BUILD INFO</b>:

src/command_modules/support/popen_wdt/popen_wdt_posix.c

@@ -135,7 +135,7 @@ bool popen_watchdog_start(popen_watchdog_data_t **data_in) {
         // Force "C" locale to avoid locale-dependent behavior
         setenv("LC_ALL", "C", true);
         // Set process group ID it its pid.
-        if (setpgrp() == -1) {
+        if (setpgid(0, 0) == -1) {
             POPEN_WDT_DBGLOG("Failed to set process group: %s",
                              strerror(errno));
             _exit(127);

src/mainDaemon.cpp

@@ -8,10 +8,10 @@
 #include <unistd.h>
 
 #include <StructF.hpp>
+#include <csignal>
 #include <cstdint>
 #include <cstdio>
 #include <cstdlib>
-#include <csignal>
 #include <filesystem>
 #include <limits>
 #include <logging/AbslLogInit.hpp>
@@ -94,7 +94,7 @@ int main(const int argc, char** argv) {
 
     if (pid == 0) {
         // Set the process group ID to the same as the process ID
-        setpgrp();
+        setpgid(0, 0);
         // Execute the bot executable with the provided arguments
         LOG(INFO) << "Executing the child process, " << argv[0] << " with pid "
                   << getpid();
@@ -139,13 +139,15 @@ int main(const int argc, char** argv) {
             }
         }
         constexpr std::chrono::seconds sleep_secs(10);
-        LOG(INFO) << fmt::format("Consumed child death, sleeping for {}", sleep_secs);
+        LOG(INFO) << fmt::format("Consumed child death, sleeping for {}",
+                                 sleep_secs);
         std::this_thread::sleep_for(sleep_secs);
         if (!std::filesystem::exists(kPidFile)) {
             LOG(INFO) << "Pid file gone, exiting";
             return EXIT_SUCCESS;
         }
-        std::filesystem::remove(kPidFile);  // Remove the pid file after termination
+        std::filesystem::remove(
+            kPidFile);    // Remove the pid file after termination
         goto redo_vfork;  // Restart the daemon process loop
     }
 }

src/socket/interface/CMakeLists.txt

@@ -13,7 +13,7 @@ if (UNIX)
     list(APPEND TGBOTSOCKET_SRC_LIST
       impl/helper/SocketHelperDarwin.cpp
     )
-  elseif(LINUX OR ANDROID)
+  elseif(LINUX OR ANDROID OR BSD)
     list(APPEND TGBOTSOCKET_SRC_LIST
       impl/helper/SocketHelperLinux.cpp
     )

src/socket/interface/impl/helper/SocketHelperLinux.cpp

@@ -4,12 +4,20 @@
 
 void SocketInterfaceUnix::bindToInterface(const socket_handle_t sock,
                                           const std::string& iface) {
+#ifdef SO_BINDTODEVICE
     struct ifreq intf {};
+    strncpy(intf.ifr_name, iface.c_str(), IFNAMSIZ);
+    if (setsockopt(sock, SOL_SOCKET, SO_BINDTODEVICE, &intf, sizeof(intf)) <
+        0) {
+        PLOG(ERROR) << "setsockopt(SO_BINDTODEVICE) failed";
+        return;
+    }
+#endif
     int opt = 1;
 
-    memset(&intf, 0, sizeof(intf));
-    strncpy(intf.ifr_ifrn.ifrn_name, iface.c_str(), IFNAMSIZ);
-    setsockopt(sock, SOL_SOCKET, SO_BINDTODEVICE, &intf, sizeof(intf));
-    setsockopt(sock, SOL_SOCKET, SO_REUSEADDR | SO_REUSEPORT, &opt,
-               sizeof(opt));
-}
+    if (setsockopt(sock, SOL_SOCKET, SO_REUSEADDR | SO_REUSEPORT, &opt,
+                   sizeof(opt)) < 0) {
+        PLOG(ERROR) << "setsockopt(SO_REUSEADDR/SO_REUSEPORT) failed";
+        return;
+    }
+}

src/socket/selector/CMakeLists.txt

@@ -9,7 +9,7 @@ if (UNIX)
   list(APPEND SELECTOR_SRC_LIST
       SelectorLinuxEPollStub.cpp
     )
-  else()
+  elseif(LINUX)
     list(APPEND SELECTOR_SRC_LIST
       SelectorLinuxEPoll.cpp
     )