Merged revisions 110335 via svnmerge from

https://origsvn.digium.com/svn/asterisk/branches/1.2

........
r110335 | russell | 2008-03-20 16:53:27 -0500 (Thu, 20 Mar 2008) | 6 lines

Fix some very broken code that was introduced in 1.2.26 as a part of the security
fix.  The dnsmgr is not appropriate here.  The dnsmgr takes a pointer to an address
structure that a background thread continuously updates.  However, in these cases,
a stack variable was passed.  That means that the dnsmgr thread would be continuously
writing to bogus memory.

........


git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.4@110336 65c4cc65-6c06-0410-ace0-fbb531ad65f3

channels/chan_iax2.c

@@ -2692,10 +2692,9 @@ static struct iax2_peer *realtime_peer(const char *peername, struct sockaddr_in
 		if (var && sin) {
 			for (tmp = var; tmp; tmp = tmp->next) {
 				if (!strcasecmp(tmp->name, "host")) {
-					struct in_addr sin2;
-					struct ast_dnsmgr_entry *dnsmgr = NULL;
-					memset(&sin2, 0, sizeof(sin2));
-					if ((ast_dnsmgr_lookup(tmp->value, &sin2, &dnsmgr) < 0) || (memcmp(&sin2, &sin->sin_addr, sizeof(sin2)) != 0)) {
+					struct ast_hostent ahp;
+					struct hostent *hp;
+					if (!(hp = ast_gethostbyname(tmp->value, &ahp)) || (memcmp(&hp->h_addr, &sin->sin_addr, sizeof(hp->h_addr)))) {
 						/* No match */
 						ast_variables_destroy(var);
 						var = NULL;
@@ -2807,10 +2806,9 @@ static struct iax2_user *realtime_user(const char *username, struct sockaddr_in
 		if (var) {
 			for (tmp = var; tmp; tmp = tmp->next) {
 				if (!strcasecmp(tmp->name, "host")) {
-					struct in_addr sin2;
-					struct ast_dnsmgr_entry *dnsmgr = NULL;
-					memset(&sin2, 0, sizeof(sin2));
-					if ((ast_dnsmgr_lookup(tmp->value, &sin2, &dnsmgr) < 0) || (memcmp(&sin2, &sin->sin_addr, sizeof(sin2)) != 0)) {
+					struct ast_hostent ahp;
+					struct hostent *hp;
+					if (!(hp = ast_gethostbyname(tmp->value, &ahp)) || (memcmp(&hp->h_addr, &sin->sin_addr, sizeof(hp->h_addr)))) {
 						/* No match */
 						ast_variables_destroy(var);
 						var = NULL;

channels/chan_sip.c

@@ -149,7 +149,6 @@ ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
 #include "asterisk/compiler.h"
 #include "asterisk/threadstorage.h"
 #include "asterisk/translate.h"
-#include "asterisk/dnsmgr.h"
 
 #ifndef FALSE
 #define FALSE    0
@@ -2543,10 +2542,9 @@ static struct sip_peer *realtime_peer(const char *newpeername, struct sockaddr_i
 			if (var) {
 				for (tmp = var; tmp; tmp = tmp->next) {
 					if (!strcasecmp(var->name, "host")) {
-						struct in_addr sin2;
-						struct ast_dnsmgr_entry *dnsmgr = NULL;
-						memset(&sin2, 0, sizeof(sin2));
-						if ((ast_dnsmgr_lookup(tmp->value, &sin2, &dnsmgr) < 0) || (memcmp(&sin2, &sin->sin_addr, sizeof(sin2)) != 0)) {
+						struct hostent *hp;
+						struct ast_hostent ahp;
+						if (!(hp = ast_gethostbyname(tmp->value, &ahp)) || (memcmp(&hp->h_addr, &sin->sin_addr, sizeof(hp->h_addr)))) {
 							/* No match */
 							ast_variables_destroy(var);
 							var = NULL;