tony2001 Fri Oct 21 09:48:11 2005 EDT
Modified files:
/php-src/ext/standard dns.c
Log:
fix possible crash in dns_get_record()
cleanup code a bit
(partly fixes #34938)
http://cvs.php.net/diff.php/php-src/ext/standard/dns.c?r1=1.71&r2=1.72&ty=u
Index: php-src/ext/standard/dns.c
diff -u php-src/ext/standard/dns.c:1.71 php-src/ext/standard/dns.c:1.72
--- php-src/ext/standard/dns.c:1.71 Tue Aug 23 08:53:22 2005
+++ php-src/ext/standard/dns.c Fri Oct 21 09:48:07 2005
@@ -18,7 +18,7 @@
+----------------------------------------------------------------------+
*/
-/* $Id: dns.c,v 1.71 2005/08/23 12:53:22 dmitry Exp $ */
+/* $Id: dns.c,v 1.72 2005/10/21 13:48:07 tony2001 Exp $ */
/* {{{ includes */
#include "php.h"
@@ -381,6 +381,8 @@
char name[MAXHOSTNAMELEN];
int have_v6_break = 0, in_v6_break = 0;
+ *subarray = NULL;
+
n = dn_expand(answer->qb2, answer->qb2+65536, cp, name, (sizeof(name))
- 2);
if (n < 0) {
return NULL;
@@ -392,13 +394,11 @@
GETLONG(ttl, cp);
GETSHORT(dlen, cp);
if (type_to_fetch != T_ANY && type != type_to_fetch) {
- *subarray = NULL;
cp += dlen;
return cp;
}
if (!store) {
- *subarray = NULL;
cp += dlen;
return cp;
}
@@ -648,7 +648,7 @@
int type_to_fetch, type_param = PHP_DNS_ANY;
struct __res_state res;
HEADER *hp;
- querybuf buf, answer, *ans;
+ querybuf buf, answer;
u_char *cp = NULL, *end = NULL;
long n, qd, an, ns = 0, ar = 0;
int type, first_query = 1, store_results = 1;
@@ -663,12 +663,14 @@
if (zend_get_parameters(ht, 2, &host, &fetch_type) ==
FAILURE) {
WRONG_PARAM_COUNT;
}
+ convert_to_long(fetch_type);
type_param = Z_LVAL_P(fetch_type);
break;
case 4:
if (zend_get_parameters(ht, 4, &host, &fetch_type,
&authns, &addtl) == FAILURE) {
WRONG_PARAM_COUNT;
}
+ convert_to_long(fetch_type);
type_param = Z_LVAL_P(fetch_type);
pval_destructor(authns);
addtl_recs = 1; /* We want the additional
Records */
@@ -764,13 +766,12 @@
cp = answer.qb2 + HFIXEDSZ;
end = answer.qb2 + n;
- ans = &answer;
- hp = (HEADER *)ans;
+ hp = (HEADER *)&answer;
qd = ntohs(hp->qdcount);
an = ntohs(hp->ancount);
ns = ntohs(hp->nscount);
ar = ntohs(hp->arcount);
-
+
/* Skip QD entries, they're only used by dn_expand
later on */
while (qd-- > 0) {
n = dn_skipname(cp, end);
--
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