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

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This commit is contained in:
blueskycs2c 2020-04-11 22:45:54 +08:00
parent 942f1945bb
commit 00e629c0ba
1 changed files with 24 additions and 0 deletions
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24
src/useradd.c
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@ -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) {