1 files changed, 178 insertions, 0 deletions
diff --git a/src/steam.c b/src/steam.c
new file mode 100644
index 0000000..4213768
--- /dev/null
+++ b/src/steam.c
@@ -0,0 +1,178 @@
+#include <stdlib.h>
+#include <string.h>
+#include <limits.h>
+#include <unistd.h>
+#include <dirent.h>
+#include <stdio.h>
+
+#include "steam.h"
+
+#ifdef _WIN32
+#include <windows.h>
+#include <tlhelp32.h>
+#endif
+
+/**
+ * Returns a heap allocated path to the main steam directory
+ * If a problem occurs returns NULL
+ */
+char* getSteamDir()
+{
+#if defined(__linux__)
+    char* home = getenv("HOME");
+
+    if (!home || !isDir(home))
+        return NULL;
+
+    size_t len = strlen(home) + strlen(FLATPAK_DIR);
+    char* path = malloc(len+1);
+
+    strncpy(path, home, len);
+    strncat(path, STEAM_DIR, len-strlen(path));
+
+    if (isDir(path))
+        return path;
+
+    strncpy(path, home, len);
+    strncat(path, FLATPAK_DIR, len-strlen(path));
+
+    if (isDir(path))
+        return path;
+
+    free(path);
+#elif defined(_WIN32)
+    size_t size = PATH_MAX;
+    char* path = malloc(size+1);
+    if (!path)
+        return NULL;
+
+    LSTATUS res = RegGetValueA(HKEY_LOCAL_MACHINE, REG_PATH, "InstallPath", RRF_RT_REG_SZ, NULL, path, (LPDWORD)&size);
+
+    if (res == ERROR_SUCCESS && isDir(path))
+        return path;
+    
+    strncpy(path, STEAM_PGRM_64, size);
+    path[size] = '\0';
+
+    if (isDir(path))
+        return path;
+
+    strncpy(path, STEAM_PGRM_86, size);
+    path[size] = '\0';
+
+    if (isDir(path))
+        return path;
+
+    free(path);
+
+#else
+    #error No Implementation
+#endif
+    return NULL;
+}
+
+/**
+ * Returns a heap allocated path to the sourcemod dirctory
+ * If a problem occurs returns NULL
+ */
+char* getSourcemodDir()
+{
+    char* steam = getSteamDir();
+    if (!steam)
+        return NULL;
+
+    steam = realloc(steam, strlen(steam) + strlen(OS_PATH_SEP) + strlen(SOURCEMOD_DIR) + 1);
+    strcat(steam, OS_PATH_SEP);
+    strcat(steam, SOURCEMOD_DIR);
+
+    return steam;
+}
+
+char* getOpenFortressDir()
+{
+    char* sm_dir = getSourcemodDir();
+    if (!sm_dir)
+        return NULL;
+
+    sm_dir = realloc(sm_dir, strlen(sm_dir) + strlen(OPEN_FORTRESS_DIR) + 1);
+    strcat(sm_dir, OPEN_FORTRESS_DIR);
+
+    return sm_dir;
+}
+
+/**
+ * function to fetch the PID of a running Steam process.
+ * If none were found returns -1
+ */
+long getSteamPID()
+{
+#ifdef __linux__
+    long pid;
+    char buf[PATH_MAX];
+    struct dirent* ent;
+    DIR* proc = opendir("/proc");
+    FILE* stat;
+
+    if (proc)
+    {
+        while ((ent = readdir(proc)) != NULL)
+        {
+            long lpid = atol(ent->d_name);
+            if (!lpid) continue;
+
+            snprintf(buf, sizeof(buf), "/proc/%ld/stat", lpid);
+            stat = fopen(buf, "r");
+
+            if (stat && (fscanf(stat, "%li (%[^)])", &pid, buf)) == 2)
+            {                
+                if (!strcmp(buf, STEAM_PROC))
+                {
+                    fclose(stat);
+                    closedir(proc);
+                    return pid;
+                }
+                fclose(stat);
+            }
+        }
+
+        closedir(proc);
+    }
+
+#elif _WIN32
+    HANDLE hSnap = CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS, 0);
+    PROCESSENTRY32 pe32 = {0};
+    pe32.dwSize = sizeof(PROCESSENTRY32); 
+    Process32First(hSnap,&pe32);
+
+    while(Process32Next(hSnap,&pe32))
+    {
+        if (!strcmp(pe32.szExeFile, STEAM_PROC))
+            return (long)pe32.th32ProcessID;
+    }
+#else
+    #error No Implementation
+#endif
+    return -1;
+}
+
+#define STEAM_LAUNCH
+
+int runOpenFortress()
+{
+#ifdef STEAM_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);
+
+    return execl(steam, steam, "-applaunch", "243750", "-game", of_dir, "-secure", "-steam", NULL);
+#endif
+}