print a warning from useradd if -u is used with uid number outside range.

diff --git a/src/useradd.c b/src/useradd.c
index 645d4a40f204a9142396bfaafb875a367a9e1e88..258a073df5fb52ebc927da4b83abbfeba6f2359e 100644 (file)
--- a/src/useradd.c
+++ b/src/useradd.c
@@ -228,6 +228,7 @@ static void tallylog_reset (const char *);
 static void usr_update (void);
 static void create_home (void);
 static void create_mail (void);
+static void check_uid_range(int rflg, uid_t user_id);
 
 /*
  * fail_exit - undo as much as possible
@@ -2257,6 +2258,27 @@ static void create_mail (void)
        }
 }
 
+static void check_uid_range(int rflg, uid_t user_id)
+{
+       uid_t uid_min ;
+       uid_t uid_max ;
+       if(rflg){
+               uid_min = (uid_t)getdef_ulong("SYS_UID_MIN",101UL);
+               uid_max = (uid_t)getdef_ulong("SYS_UID_MAX",getdef_ulong("UID_MIN",1000UL)-1);
+               if(uid_min <= uid_max){
+                       if(user_id < uid_min || user_id >uid_max)
+                               printf(_("warning: %s's uid %d outside of the SYS_UID_MIN %d and SYS_UID_MAX %d range.\n"),user_name, user_id, uid_min, uid_max);
+               }
+       }else{
+               uid_min = (uid_t)getdef_ulong("UID_MIN", 1000UL);
+               uid_max = (uid_t)getdef_ulong("UID_MAX", 6000UL);
+               if(uid_min <= uid_max){
+                       if(user_id < uid_min || user_id >uid_max)
+                               printf(_("warning: %s's uid %d outside of the UID_MIN %d and UID_MAX %d range.\n"),user_name, user_id, uid_min, uid_max);
+               }
+       }
+
+}
 /*
  * main - useradd command
  */
@@ -2439,6 +2461,8 @@ int main (int argc, char **argv)
                }
        }
 
+       if(uflg)
+          check_uid_range(rflg,user_id);
 #ifdef WITH_TCB
        if (getdef_bool ("USE_TCB")) {
                if (shadowtcb_create (user_name, user_id) == SHADOWTCB_FAILURE) {