C++ (Cpp) Posix_Getenv Examples

Example #1

const char *
Xdg_GetCacheHome(void)
{
   static char *result = NULL;
   struct passwd *pw;

   if (result == NULL) {
      do {
         if (!Id_IsSetUGid()) {
            const char *base = NULL;

            /*
             * Paranoia:  Avoid environment variables if running in a sensitive
             *            context.  sudo or other loader should've sanitized the
             *            environment, but, well, we're paranoid, remember?
             */

            // 1. $XDG_CACHE_HOME
            base = Posix_Getenv("XDG_CACHE_HOME");
            if (Util_IsAbsolutePath(base)) {
               result = Util_SafeStrdup(base);
               break;
            }

            // 2. $HOME/.cache
            base = Posix_Getenv("HOME");
            if (Util_IsAbsolutePath(base)) {
               result = Util_SafeStrdup(base);
               StrUtil_SafeStrcat(&result, "/.cache");
               break;
            }
         }

         // 3. <pw_dir>/.cache
         pw = Posix_Getpwuid(geteuid());

         if (pw != NULL && Util_IsAbsolutePath(pw->pw_dir)) {
            result = Str_Asprintf(NULL, "%s/.cache", pw->pw_dir);
         }
      } while(0);
   }

   VERIFY(result == NULL || result[0] == '/');
   return result;
}

Example #2

File: fileTempPosix.c Project: AlissonGiron/open-vm-tools

static char *
FileGetTmpDir(Bool useConf)  // IN: Use the config file?
{
   char *dirName;
   char *edirName;

   /* Make several attempts to find a good temporary directory candidate */

   if (useConf) {
      dirName = (char *)LocalConfig_GetString(NULL, "tmpDirectory");
      edirName = FileTryDir(dirName);
      free(dirName);
      if (edirName != NULL) {
         return edirName;
      }
   }

   /* Posix_Getenv string must _not_ be freed */
   edirName = FileTryDir(Posix_Getenv("TMPDIR"));
   if (edirName != NULL) {
      return edirName;
   }

   /* P_tmpdir is usually defined in <stdio.h> */
   edirName = FileTryDir(P_tmpdir);
   if (edirName != NULL) {
      return edirName;
   }

   edirName = FileTryDir("/tmp");
   if (edirName != NULL) {
      return edirName;
   }

   edirName = FileTryDir("~");
   if (edirName != NULL) {
      return edirName;
   }

   dirName = File_Cwd(NULL);

   if (dirName != NULL) {
      edirName = FileTryDir(dirName);
      free(dirName);
      if (edirName != NULL) {
         return edirName;
      }
   }

   edirName = FileTryDir("/");
   if (edirName != NULL) {
      return edirName;
   }

   Warning("%s: Couldn't get a temporary directory\n", __FUNCTION__);
   return NULL;
}

Example #3

char *
VixToolsGetEnvFromUserEnvironment(const VixToolsUserEnvironment *env,  // IN
                                  const char *name)                    // IN
{
   char *envVar;

   if (NULL == env) {
      return NULL;
   }

#ifdef _WIN32
   if (env->impersonated) {
      envVar = VixToolsGetEnvVarFromEnvBlock(env->envBlock, name);
   } else {
      envVar = Util_SafeStrdup(Posix_Getenv(name));
   }
#else
   envVar = Util_SafeStrdup(Posix_Getenv(name));
#endif

   return envVar;
}

Example #4

File: systemLinux.c Project: SvenDowideit/open-vm-tools

char *
System_GetEnv(Bool global,           // IN
              const char *valueName) // IN: UTF-8
{
   char *result;

   result = Posix_Getenv(valueName);

   if (NULL != result) {
      result = strdup(result);
   }

   return(result);
} // System_GetEnv