add source sdk path fetching, directly launch OF via sdk executable

- guard Flatpak logic for non Linux UNIX systems
- add /proc check on FreeBSD
- allow arguments when launching OF
- update README
- add alternative launch options to CMakeLists.txt
- add CFLAGS to all libraries and executables

6 files changed, 186 insertions, 27 deletions

diff --git a/src/cli/CMakeLists.txt b/src/cli/CMakeLists.txt
index 38e5e13..2947a5b 100644
--- a/src/cli/CMakeLists.txt
+++ b/src/cli/CMakeLists.txt
@@ -12,6 +12,7 @@ set(THREADS_PREFER_PTHREAD_FLAG ON)
 find_package(Threads REQUIRED)
 
 add_executable(${FRONTEND_NAME} ${CLI_SOURCES})
+target_compile_options(${FRONTEND_NAME} PUBLIC ${CFLAGS})
 target_link_libraries(${FRONTEND_NAME} PRIVATE tvn)
 target_link_libraries(${FRONTEND_NAME} PRIVATE Threads::Threads)
 install(TARGETS ${FRONTEND_NAME})
diff --git a/src/cli/commands.c b/src/cli/commands.c
index 4bac2f7..d206865 100644
--- a/src/cli/commands.c
+++ b/src/cli/commands.c
@@ -211,7 +211,7 @@ static int run(int c, char** v)
         goto run_cleanup;
     }
 
-    runOpenFortress();
+    runOpenFortress(v+1, (size_t)(c-1));
 
     run_cleanup:
     free(of_dir);
diff --git a/src/qt/CMakeLists.txt b/src/qt/CMakeLists.txt
index 56d16c4..3702ad5 100644
--- a/src/qt/CMakeLists.txt
+++ b/src/qt/CMakeLists.txt
@@ -32,6 +32,7 @@ set(THREADS_PREFER_PTHREAD_FLAG ON)
 find_package(Threads REQUIRED)
 
 add_executable(${FRONTEND_NAME} WIN32 ${QT_SOURCES})
+target_compile_options(${FRONTEND_NAME} PUBLIC ${CFLAGS})
 target_link_libraries(${FRONTEND_NAME} PRIVATE tvn)
 target_link_libraries(${FRONTEND_NAME} PRIVATE Threads::Threads)
 target_link_libraries(${FRONTEND_NAME} PRIVATE Qt${QT_VERSION_MAJOR}::Widgets)
diff --git a/src/qt/workers.cpp b/src/qt/workers.cpp
index 8eb26df..41e8994 100644
--- a/src/qt/workers.cpp
+++ b/src/qt/workers.cpp
@@ -291,7 +291,7 @@ void Worker::doWork(const enum Worker::Tasks_t &parameter) {
 
         case TASK_RUN:
             result = getSteamPID() > -1 ? RESULT_EXIT : RESULT_NO_STEAM;
-            if (result == RESULT_EXIT) runOpenFortress();
+            if (result == RESULT_EXIT) runOpenFortress(NULL, 0);
             break;
     }
 
diff --git a/src/steam.c b/src/steam.c
index 4213768..83d05ce 100644
--- a/src/steam.c
+++ b/src/steam.c
@@ -5,6 +5,7 @@
 #include <dirent.h>
 #include <stdio.h>
 
+#include "vdf.h"
 #include "steam.h"
 
 #ifdef _WIN32
@@ -18,13 +19,18 @@
  */
 char* getSteamDir()
 {
-#if defined(__linux__)
+#if defined(__linux__) || defined(__FreeBSD__)
     char* home = getenv("HOME");
 
     if (!home || !isDir(home))
         return NULL;
 
-    size_t len = strlen(home) + strlen(FLATPAK_DIR);
+    size_t len = strlen(home);
+#ifdef FLATPAK_DIR
+    len += strlen(FLATPAK_DIR);
+#else
+    len += strlen(STEAM_DIR);
+#endif
     char* path = malloc(len+1);
 
     strncpy(path, home, len);
@@ -33,11 +39,13 @@ char* getSteamDir()
     if (isDir(path))
         return path;
 
+#ifdef FLATPAK_DIR
     strncpy(path, home, len);
     strncat(path, FLATPAK_DIR, len-strlen(path));
 
     if (isDir(path))
         return path;
+#endif
 
     free(path);
 #elif defined(_WIN32)
@@ -94,19 +102,85 @@ char* getOpenFortressDir()
     if (!sm_dir)
         return NULL;
 
-    sm_dir = realloc(sm_dir, strlen(sm_dir) + strlen(OPEN_FORTRESS_DIR) + 1);
+    sm_dir = realloc(sm_dir, strlen(sm_dir) + strlen(OS_PATH_SEP) + strlen(OPEN_FORTRESS_DIR) + 1);
+    strcat(sm_dir, OS_PATH_SEP);
     strcat(sm_dir, OPEN_FORTRESS_DIR);
 
     return sm_dir;
 }
 
+char* getSourceSDK2013MpDir()
+{
+    char* librayfolders = getSteamDir();
+    if (!librayfolders)
+        return NULL;
+
+    librayfolders = realloc(librayfolders, strlen(librayfolders) + strlen(OS_PATH_SEP) + strlen(STEAMAPPS) + strlen(OS_PATH_SEP) + strlen(SOURCESDK_MANIFEST) + 1);
+
+    strcat(librayfolders, OS_PATH_SEP);
+    strcat(librayfolders, STEAMAPPS);
+    strcat(librayfolders, OS_PATH_SEP);
+    strcat(librayfolders, LIBARYFOLDERS_VDF);
+
+    struct vdf_object* o = vdf_parse_file(librayfolders);
+    free(librayfolders);
+
+    char* sdkdir = NULL;
+
+    if (o)
+    {
+        for (size_t i = 0; i < vdf_object_get_array_length(o); ++i)
+        {
+            struct vdf_object* library = vdf_object_index_array(o, i);
+            struct vdf_object* apps = vdf_object_index_array_str(library, "apps");
+
+            if (vdf_object_index_array_str(apps, SOURCESDK_APPID))
+            {
+                struct vdf_object* path = vdf_object_index_array_str(library, "path");
+
+                size_t path_len = path->data.data_string.len + strlen(OS_PATH_SEP) + strlen(STEAMAPPS) + strlen(OS_PATH_SEP) + strlen(SOURCESDK_MANIFEST) + 1;
+                char* path_str = malloc(path_len);
+
+                snprintf(path_str, path_len, "%s%s%s%s%s", vdf_object_get_string(path), OS_PATH_SEP, STEAMAPPS, OS_PATH_SEP, SOURCESDK_MANIFEST);
+
+                struct vdf_object* k = vdf_parse_file(path_str);
+                free(path_str);
+
+                if (k)
+                {
+                    struct vdf_object* installdir = vdf_object_index_array_str(k, "installdir");
+
+                    path_len = path->data.data_string.len + strlen(OS_PATH_SEP) + strlen(STEAMAPPS_COMMON) + strlen(OS_PATH_SEP) + installdir->data.data_string.len + 1;
+                    path_str = malloc(path_len);
+                    snprintf(path_str, path_len, "%s%s%s%s%s", vdf_object_get_string(path), OS_PATH_SEP, STEAMAPPS_COMMON, OS_PATH_SEP, vdf_object_get_string(installdir));
+
+                    sdkdir = path_str;
+
+                    vdf_free_object(k);
+                }
+            }
+        }
+
+        vdf_free_object(o);
+    }
+
+    return sdkdir;
+}
+
 /**
  * function to fetch the PID of a running Steam process.
  * If none were found returns -1
  */
 long getSteamPID()
 {
-#ifdef __linux__
+#if defined(__linux__) || defined(__FreeBSD__)
+
+#ifdef __FreeBSD__
+    // on FreeBSD /proc is not mounted by default
+    if (!isDir("/proc"))
+        return -1;
+#endif
+
     long pid;
     char buf[PATH_MAX];
     struct dirent* ent;
@@ -157,22 +231,88 @@ long getSteamPID()
 
 #define STEAM_LAUNCH
 
-int runOpenFortress()
+int runOpenFortress(char** args, size_t arg_count)
 {
-#ifdef STEAM_LAUNCH
-    #ifdef _WIN32
-        return system("start steam://rungameid/11677091221058336806");
-    #else
-        return system("xdg-open steam://rungameid/11677091221058336806");
-    #endif
+#ifdef STEAM_DIRECT_LAUNCH
+#if defined(__linux__) || defined(__FreeBSD__)
+    // fork so we don't have to stay alive for the game
+    if (fork()) return 0;
+#endif
+
+    char* game = getSourceSDK2013MpDir();
+    if (!game)
+        exit(0);
 
-#else
     char* of_dir = getOpenFortressDir();
-    char* steam = getSteamDir();
-    steam = realloc(steam, strlen(steam) + strlen(OS_PATH_SEP) + strlen(STEAM_BIN) + 1);
-    strcat(steam, OS_PATH_SEP);
-    strcat(steam, STEAM_BIN);
+    if (!of_dir)
+    {
+        free(game);
+        exit(0);
+    }
 
-    return execl(steam, steam, "-applaunch", "243750", "-game", of_dir, "-secure", "-steam", NULL);
+    game = realloc(game, strlen(game) + strlen(OS_PATH_SEP) + strlen(HL2_EXE) + 1);
+    strcat(game, OS_PATH_SEP);
+    strcat(game, HL2_EXE);
+
+#if defined(__linux__) || defined(__FreeBSD__)
+    // we need to be in the steam environment to get the right locales 
+    setenv("SteamEnv", "1", 1);
+#endif
+
+    char** argv = malloc(sizeof(char*) * (arg_count + 6));
+
+    size_t of_dir_len = strlen(of_dir); 
+    of_dir = realloc(of_dir, of_dir_len + 3);
+    memmove(of_dir+1, of_dir, of_dir_len);
+    of_dir[0] = '"';
+    of_dir[of_dir_len+1] = '"';
+
+    argv[0] = game;
+    argv[1] = "-game";
+    argv[2] = of_dir;
+    argv[3] = "-secure";
+    argv[4] = "-steam";
+    for (size_t i = 0; i < arg_count; ++i)
+        argv[5+i] = args[i];
+    argv[5+arg_count] = NULL;
+
+    execv(game, argv);
+
+    free(game);
+    free(of_dir);
+
+    exit(0);
+
+#else
+    #ifdef STEAM_NAIVE_LAUNCH
+        #ifdef _WIN32
+            return system("start steam://rungameid/11677091221058336806");
+        #else
+            return system("xdg-open steam://rungameid/11677091221058336806");
+        #endif
+
+    #else
+        char* of_dir = getOpenFortressDir();
+        char* steam = getSteamDir();
+        steam = realloc(steam, strlen(steam) + strlen(OS_PATH_SEP) + strlen(STEAM_BIN) + 1);
+        strcat(steam, OS_PATH_SEP);
+        strcat(steam, STEAM_BIN);
+
+        char** argv = malloc(sizeof(char*) * (arg_count + 8));
+
+        argv[0] = steam;
+        argv[1] = "-applaunch";
+        argv[2] = "243750";
+        argv[3] = "-game";
+        argv[4] = of_dir;
+        argv[5] = "-secure";
+        argv[6] = "-steam";
+        for (size_t i = 0; i < arg_count; ++i)
+            argv[7+i] = args[i];
+        argv[7+arg_count] = NULL;
+
+        return execv(steam, argv);
+    #endif
 #endif
 }
+    
\ No newline at end of file
diff --git a/src/steam.h b/src/steam.h
index 9c24337..c6f6887 100644
--- a/src/steam.h
+++ b/src/steam.h
@@ -14,31 +14,48 @@ extern "C" {
 #define STEAM_PROC "steam.exe"
 #define STEAM_BIN OS_PATH_SEP STEAM_PROC
 #else
+// Works on Linux and FreeBSD
 #define STEAM_PROC "steam"
 #define STEAM_BIN "steam.sh"
 #endif
 
-#define STEAM_APPID "243750"
+#define LIBARYFOLDERS_VDF "libraryfolders.vdf"
+#define SOURCESDK_APPID "243750"
+#define SOURCESDK_MANIFEST "appmanifest_" SOURCESDK_APPID ".acf"
 
-#ifdef _WIN32
-#define _STEAM_NAME "Steam"
-#define STEAM_PGRM_64 "C:\\Program Files (x86)\\" _STEAM_NAME
-#define STEAM_PGRM_86 "C:\\Program Files\\" _STEAM_NAME
+#if defined(_WIN32)
+#define HL2_EXE "hl2.exe"
+#define STEAM_PGRM_64 "C:\\Program Files (x86)\\Steam"
+#define STEAM_PGRM_86 "C:\\Program Files\\Steam"
 // TODO check if this is the right registry path for x86
 #define REG_PATH "SOFTWARE\\Wow6432Node\\Valve\\Steam"
-#else // _WIN32
+
+#elif defined(__linux__)
+#define HL2_EXE "hl2.sh"
 #define STEAM_DIR "/.local/share/Steam"
 #define FLATPAK_DIR "/.var/app/com.valvesoftware.Steam" STEAM_DIR
+
+#elif defined(__FreeBSD__)
+#define HL2_EXE "hl2.sh"
+#define STEAM_DIR "/.steam/steam"
+
 #endif
 
-#define SOURCEMOD_DIR "steamapps" OS_PATH_SEP "sourcemods" OS_PATH_SEP
+#define STEAMAPPS "steamapps"
+#define STEAMAPPS_COMMON STEAMAPPS OS_PATH_SEP "common"
+#define SOURCEMOD_DIR STEAMAPPS OS_PATH_SEP "sourcemods"
 #define OPEN_FORTRESS_DIR "open_fortress"
 
+#if defined(_WIN32)
+#else
+#endif
+
 char* getSteamDir();
 char* getSourcemodDir();
 char* getOpenFortressDir();
+char* getSourceSDK2013MpDir();
 long getSteamPID();
-int runOpenFortress();
+int runOpenFortress(char**, size_t);
 
 #ifdef __cplusplus
 }