Before clearing the environment variables, save the language environment variable first, and then set it again after clearing the environment variables to solve the problem that the PAM messages are not translated.

Author: liuyuanpeng176

src/polkitagent/polkitagenthelper-pam.c

@@ -83,13 +83,21 @@ main (int argc, char *argv[])
   rc = 0;
   pam_h = NULL;
 
+  char *lang = getenv("LANG");
+  char *language = getenv("LANGUAGE");
+
   /* clear the entire environment to avoid attacks using with libraries honoring environment variables */
   if (_polkit_clearenv () != 0)
     goto error;
 
   /* set a minimal environment */
   setenv ("PATH", "/usr/sbin:/usr/bin:/sbin:/bin", 1);
 
+  if(lang)
+      setenv("LANG",lang,0);
+  if(language)
+      setenv("LANGUAGE",language,0);
+
   /* check that we are setuid root */
   if (geteuid () != 0)
     {