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Refuse to gethostbyname on a pure integer 

git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@2949 65c4cc65-6c06-0410-ace0-fbb531ad65f3
This commit is contained in:
Mark Spencer 2004-05-11 18:41:09 +00:00
parent a7818fb1be
commit 34e400fe2b
1 changed files with 14 additions and 1 deletions
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15
utils.c
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@ -9,6 +9,7 @@
* the GNU General Public License
*/
#include <ctype.h>
#include <asterisk/lock.h>
#include <asterisk/utils.h>
@ -120,8 +121,20 @@ struct hostent *ast_gethostbyname(const char *host, struct ast_hostent *hp)
{
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])