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Fortify the sanity-checks

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Hiltjo made a good start, but we need to check both the pointers
and the first value to make sure that a NULL-pointer is not
passed to the functions.
This commit is contained in:
FRIGN 2014-08-14 17:48:37 +02:00
parent 8aa3e3f48f
commit bd9d7e3493
1 changed files with 2 additions and 2 deletions
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quark.c
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@ -553,9 +553,9 @@ main(int argc, char *argv[]) {
} ARGEND; } ARGEND;
/* sanity checks */ /* sanity checks */
if (*user && !(upwd = getpwnam(user))) if (user && *user && !(upwd = getpwnam(user)))
die("error\tinvalid user %s\n", user); die("error\tinvalid user %s\n", user);
if (*group && !(gpwd = getgrnam(group))) if (group && *group && !(gpwd = getgrnam(group)))
die("error\tinvalid group %s\n", group); die("error\tinvalid group %s\n", group);
signal(SIGCHLD, sighandler); signal(SIGCHLD, sighandler);