More memory checks

git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@4056 65c4cc65-6c06-0410-ace0-fbb531ad65f3

channels/chan_iax2.c

@@ -6411,10 +6411,12 @@ static struct iax2_peer *build_peer(const char *name, struct ast_variable *v, in
  	} else {
 		ast_mutex_unlock(&peerl.lock);
 		peer = malloc(sizeof(struct iax2_peer));
+		if (peer) {
 			memset(peer, 0, sizeof(struct iax2_peer));
 			peer->expire = -1;
 			peer->pokeexpire = -1;
 		}
+	}
 	if (peer) {
 		peer->messagedetail = globalmessagedetail;
 		peer->usejitterbuf = globalusejitterbuf;
@@ -6589,6 +6591,7 @@ static struct iax2_user *build_user(const char *name, struct ast_variable *v, in
  	} else {
 		ast_mutex_unlock(&userl.lock);
 		user = malloc(sizeof(struct iax2_user));
+		if (user)
 			memset(user, 0, sizeof(struct iax2_user));
 	}
 	

channels/chan_sip.c

@@ -8164,6 +8164,8 @@ static struct sip_peer *temp_peer(char *name)
 {
 	struct sip_peer *peer;
 	peer = malloc(sizeof(struct sip_peer));
+	if (!peer)
+		return NULL;
 	memset(peer, 0, sizeof(struct sip_peer));
 	peer->expire = -1;
 	peer->pokeexpire = -1;
@@ -8228,12 +8230,14 @@ static struct sip_peer *build_peer(const char *name, struct ast_variable *v, int
  	} else {
 		ast_mutex_unlock(&peerl.lock);
 		peer = malloc(sizeof(struct sip_peer));
+		if (peer) {
 			memset(peer, 0, sizeof(struct sip_peer));
 			peer->expire = -1;
 			peer->pokeexpire = -1;
 		}
-	peer->lastmsgssent = -1;
+	}
 	if (peer) {
+		peer->lastmsgssent = -1;
 		if (!found) {
 			strncpy(peer->name, name, sizeof(peer->name)-1);
 			strncpy(peer->context, default_context, sizeof(peer->context)-1);

res/res_monitor.c

@@ -90,6 +90,11 @@ int ast_monitor_start(	struct ast_channel *chan, const char *format_spec,
 		}
 
 		monitor = malloc(sizeof(struct ast_channel_monitor));
+		if (!monitor) {
+			if (need_lock) 
+				ast_mutex_unlock(&chan->lock);
+			return -1;
+		}
 		memset(monitor, 0, sizeof(struct ast_channel_monitor));
 
 		/* Determine file names */
@@ -391,6 +396,11 @@ static int start_monitor_action(struct mansession *s, struct message *m)
 	if ((!fname) || (ast_strlen_zero(fname))) {
 		// No filename base specified, default to channel name as per CLI
 		fname = malloc (FILENAME_MAX);
+		if (!fname) {
+			astman_send_error(s, m, "Could not start monitoring channel");
+			ast_mutex_unlock(&c->lock);
+			return 0;
+		}
 		memset(fname, 0, FILENAME_MAX);
 		strncpy(fname, c->name, FILENAME_MAX-1);
 		// Channels have the format technology/channel_name - have to replace that / 

res/res_odbc.c

@@ -99,11 +99,13 @@ static int load_odbc_config(void)
 			if (!strcmp(cat, "ENV")) {
 				for (v = ast_variable_browse(config, cat); v; v = v->next) {
 					env_var = malloc(strlen(v->name) + strlen(v->value) + 2);
+					if (env_var) {
 						sprintf(env_var, "%s=%s", v->name, v->value);
 						ast_log(LOG_NOTICE, "Adding ENV var: %s=%s\n", v->name, v->value);
 						putenv(env_var);
 						free(env_var);
 					}
+				}
 
 			cat = ast_category_browse(config, cat);
 			}
@@ -222,6 +224,8 @@ odbc_obj *new_odbc_obj(char *name, char *dsn, char *username, char *password)
 	static odbc_obj *new;
 
 	new = malloc(sizeof(odbc_obj));
+	if (!new)
+		return NULL;
 	memset(new, 0, sizeof(odbc_obj));
 	new->env = SQL_NULL_HANDLE;