Prevent l from becoming negative if strlen returns 0

ppp-project · May 22, 2024 · cdda23f · cdda23f
1 parent 04e6b8d
commit cdda23f
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/pppd/auth.c b/pppd/auth.c
@@ -2164,6 +2164,8 @@ auth_number(void)
     while (wp) {
 	/* trailing '*' wildcard */
 	l = strlen(wp->word);
+	if (l == 0)
+	    return 1;
 	if ((wp->word)[l - 1] == '*')
 	    l--;
 	if (!strncasecmp(wp->word, remote_number, l))