MT#55283 fix mem leak

SDP attributes have been moved to the call's memory arena in 5115fe000.
Make sure the redis restore code uses the same.

Remove some redundant null checks as well.

Closes #1959

Change-Id: I2f37869f5f2c95999d028c811c6a0eb10215f576
(cherry picked from commit a7a43c9b75)

daemon/call.c

@@ -2800,8 +2800,7 @@ static void __call_monologue_init_from_flags(struct call_monologue *ml, struct c
 
 		/* origin (name, version etc.) */
 		if (flags->session_sdp_orig.parsed) {
-			if (ml->session_sdp_orig)
-				sdp_orig_free(ml->session_sdp_orig);
+			sdp_orig_free(ml->session_sdp_orig);
 			ml->session_sdp_orig = sdp_orig_dup(&flags->session_sdp_orig);
 		}
 
@@ -4359,10 +4358,8 @@ void __monologue_free(struct call_monologue *m) {
 	free_ssrc_hash(&m->ssrc_hash);
 	if (m->last_out_sdp)
 		g_string_free(m->last_out_sdp, TRUE);
-	if (m->session_sdp_orig)
-		sdp_orig_free(m->session_sdp_orig);
-	if (m->session_last_sdp_orig)
-		sdp_orig_free(m->session_last_sdp_orig);
+	sdp_orig_free(m->session_sdp_orig);
+	sdp_orig_free(m->session_last_sdp_orig);
 	t_queue_clear_full(&m->generic_attributes, sdp_attr_free);
 	t_queue_clear_full(&m->all_attributes, sdp_attr_free);
 	t_queue_clear(&m->tag_aliases);

daemon/redis.c

@@ -32,6 +32,7 @@
 #include "ssrc.h"
 #include "main.h"
 #include "codec.h"
+#include "sdp.h"
 
 typedef union {
 	GQueue *q;
@@ -1514,39 +1515,41 @@ static int redis_tags(call_t *c, struct redis_list *tags, parser_arg arg) {
 			ml->sdp_session_timing = call_str_cpy(&s);
 		/* o= */
 		if (!redis_hash_get_str(&s, rh, "sdp_orig_parsed")) {
+			sdp_orig_free(ml->session_sdp_orig);
 			ml->session_sdp_orig = g_new0(__typeof(*ml->session_sdp_orig), 1);
 			ml->session_sdp_orig->parsed = 1;
 			redis_hash_get_llu(&ml->session_sdp_orig->version_num, rh, "sdp_orig_version_num");
 			if (!redis_hash_get_str(&s, rh, "sdp_orig_username"))
-				ml->session_sdp_orig->username = str_dup_str(&s);
+				ml->session_sdp_orig->username = call_str_cpy(&s);
 			if (!redis_hash_get_str(&s, rh, "sdp_orig_session_id"))
-				ml->session_sdp_orig->session_id = str_dup_str(&s);
+				ml->session_sdp_orig->session_id = call_str_cpy(&s);
 			if (!redis_hash_get_str(&s, rh, "sdp_orig_version_str"))
-				ml->session_sdp_orig->version_str = str_dup_str(&s);
+				ml->session_sdp_orig->version_str = call_str_cpy(&s);
 			if (!redis_hash_get_str(&s, rh, "sdp_orig_address_network_type"))
-				ml->session_sdp_orig->address.network_type = str_dup_str(&s);
+				ml->session_sdp_orig->address.network_type = call_str_cpy(&s);
 			if (!redis_hash_get_str(&s, rh, "sdp_orig_address_address_type"))
-				ml->session_sdp_orig->address.address_type = str_dup_str(&s);
+				ml->session_sdp_orig->address.address_type = call_str_cpy(&s);
 			if (!redis_hash_get_str(&s, rh, "sdp_orig_address_address"))
-				ml->session_sdp_orig->address.address = str_dup_str(&s);
+				ml->session_sdp_orig->address.address = call_str_cpy(&s);
 		}
 		/* o= last used of the other side*/
 		if (!redis_hash_get_str(&s, rh, "last_sdp_orig_parsed")) {
+			sdp_orig_free(ml->session_last_sdp_orig);
 			ml->session_last_sdp_orig = g_new0(__typeof(*ml->session_last_sdp_orig), 1);
 			ml->session_last_sdp_orig->parsed = 1;
 			redis_hash_get_llu(&ml->session_last_sdp_orig->version_num, rh, "last_sdp_orig_version_num");
 			if (!redis_hash_get_str(&s, rh, "last_sdp_orig_username"))
-				ml->session_last_sdp_orig->username = str_dup_str(&s);
+				ml->session_last_sdp_orig->username = call_str_cpy(&s);
 			if (!redis_hash_get_str(&s, rh, "last_sdp_orig_session_id"))
-				ml->session_last_sdp_orig->session_id = str_dup_str(&s);
+				ml->session_last_sdp_orig->session_id = call_str_cpy(&s);
 			if (!redis_hash_get_str(&s, rh, "last_sdp_orig_version_str"))
-				ml->session_last_sdp_orig->version_str = str_dup_str(&s);
+				ml->session_last_sdp_orig->version_str = call_str_cpy(&s);
 			if (!redis_hash_get_str(&s, rh, "last_sdp_orig_address_network_type"))
-				ml->session_last_sdp_orig->address.network_type = str_dup_str(&s);
+				ml->session_last_sdp_orig->address.network_type = call_str_cpy(&s);
 			if (!redis_hash_get_str(&s, rh, "last_sdp_orig_address_address_type"))
-				ml->session_last_sdp_orig->address.address_type = str_dup_str(&s);
+				ml->session_last_sdp_orig->address.address_type = call_str_cpy(&s);
 			if (!redis_hash_get_str(&s, rh, "last_sdp_orig_address_address"))
-				ml->session_last_sdp_orig->address.address = str_dup_str(&s);
+				ml->session_last_sdp_orig->address.address = call_str_cpy(&s);
 		}
 
 		ml->sdp_session_bandwidth.as = (!redis_hash_get_ld(&il, rh, "sdp_session_as")) ? il : -1;