[Asterisk-cvs] asterisk utils.c,1.1,1.2

[markster at lists.digium.com]

Update of /usr/cvsroot/asterisk
In directory mongoose.digium.com:/tmp/cvs-serv24392

Modified Files:
	utils.c 
Log Message:
Refuse to gethostbyname on a pure integer


Index: utils.c
===================================================================
RCS file: /usr/cvsroot/asterisk/utils.c,v
retrieving revision 1.1
retrieving revision 1.2
diff -u -d -r1.1 -r1.2
--- utils.c	9 May 2004 08:22:15 -0000	1.1
+++ utils.c	11 May 2004 18:41:09 -0000	1.2
@@ -9,6 +9,7 @@
  * the GNU General Public License
  */
 
+#include <ctype.h>
 #include <asterisk/lock.h>
 #include <asterisk/utils.h>
 
@@ -120,8 +121,20 @@
 {
 	int res;
 	int herrno;
+	const char *s;
 	struct hostent *result = NULL;
-
+	/* Although it is perfectly legitimate to lookup a pure integer, for
+	   the sake of the sanity of people who like to name their peers as
+	   integers, we break with tradition and refuse to look up a
+	   pure integer */
+	s = host;
+	while(s && *s) {
+		if (!isdigit(*s))
+			break;
+		s++;
+	}
+	if (!s || !*s)
+		return NULL;
 	res = gethostbyname_r(host, &hp->hp, hp->buf, sizeof(hp->buf), &result, &herrno);
 
 	if (res || !hp->hp.h_addr_list || !hp->hp.h_addr_list[0])