No local support.

src/handle_subscribe.c

@@ -36,7 +36,6 @@ int handle__subscribe(struct mosquitto_db *db, struct mosquitto *context)
 	uint8_t subscription_options;
 	uint8_t qos;
 	uint8_t retain_handling = 0;
-	uint8_t retain_as_published = 0;
 	uint8_t *payload = NULL, *tmp_payload;
 	uint32_t payloadlen = 0;
 	int len;
@@ -95,17 +94,14 @@ int handle__subscribe(struct mosquitto_db *db, struct mosquitto *context)
 			if(context->protocol == mosq_p_mqtt31 || context->protocol == mosq_p_mqtt311){
 				qos = subscription_options;
 				if(context->is_bridge){
-					retain_as_published = 1;
+					subscription_options = MQTT_SUB_OPT_RETAIN_AS_PUBLISHED | MQTT_SUB_OPT_NO_LOCAL;
 				}
 			}else{
 				qos = subscription_options & 0x03;
-
-				retain_as_published = subscription_options & 0x08;
+				subscription_options &= 0xFC;
 
 				retain_handling = (subscription_options & 0x30) >> 4;
-				if(retain_handling == 3){
-					mosquitto__free(sub);
-					mosquitto__free(payload);
+				if(retain_handling == 3 || (subscription_options & 0xC0) != 0){
 					return MOSQ_ERR_PROTOCOL;
 				}
 			}
@@ -151,7 +147,7 @@ int handle__subscribe(struct mosquitto_db *db, struct mosquitto *context)
 			}
 
 			if(qos != 0x80){
-				rc2 = sub__add(db, context, sub, qos, retain_as_published, &db->subs);
+				rc2 = sub__add(db, context, sub, qos, subscription_options, &db->subs);
 				if(context->protocol == mosq_p_mqtt311 || context->protocol == mosq_p_mqtt31){
 					if(rc2 == MOSQ_ERR_SUCCESS || rc2 == MOSQ_ERR_SUB_EXISTS){
 						if(sub__retain_queue(db, context, sub, qos)) rc = 1;

src/mosquitto_broker_internal.h

@@ -290,6 +290,7 @@ struct mosquitto__subleaf {
 	struct mosquitto__subleaf *next;
 	struct mosquitto *context;
 	int qos;
+	bool no_local;
 	bool retain_as_published;
 };
 
@@ -573,7 +574,7 @@ void sys_tree__update(struct mosquitto_db *db, int interval, time_t start_time);
 /* ============================================================
  * Subscription functions
  * ============================================================ */
-int sub__add(struct mosquitto_db *db, struct mosquitto *context, const char *sub, int qos, bool retain_as_published, struct mosquitto__subhier **root);
+int sub__add(struct mosquitto_db *db, struct mosquitto *context, const char *sub, int qos, int options, struct mosquitto__subhier **root);
 struct mosquitto__subhier *sub__add_hier_entry(struct mosquitto__subhier *parent, struct mosquitto__subhier **sibling, const char *topic, size_t len);
 int sub__remove(struct mosquitto_db *db, struct mosquitto *context, const char *sub, struct mosquitto__subhier *root);
 void sub__tree_print(struct mosquitto__subhier *root, int level);

src/subs.c

@@ -97,7 +97,7 @@ static int subs__process(struct mosquitto_db *db, struct mosquitto__subhier *hie
 		}
 	}
 	while(source_id && leaf){
-		if(!leaf->context->id || (leaf->context->is_bridge && !strcmp(leaf->context->id, source_id))){
+		if(!leaf->context->id || leaf->no_local){
 			leaf = leaf->next;
 			continue;
 		}
@@ -240,7 +240,7 @@ static void sub__topic_tokens_free(struct sub__token *tokens)
 	}
 }
 
-static int sub__add_recurse(struct mosquitto_db *db, struct mosquitto *context, int qos, bool retain_as_published, struct mosquitto__subhier *subhier, struct sub__token *tokens)
+static int sub__add_recurse(struct mosquitto_db *db, struct mosquitto *context, int qos, int options, struct mosquitto__subhier *subhier, struct sub__token *tokens)
 	/* FIXME - this function has the potential to leak subhier, audit calling functions. */
 {
 	struct mosquitto__subhier *branch;
@@ -274,7 +274,8 @@ static int sub__add_recurse(struct mosquitto_db *db, struct mosquitto *context,
 			leaf->next = NULL;
 			leaf->context = context;
 			leaf->qos = qos;
-			leaf->retain_as_published = retain_as_published;
+			leaf->no_local = ((options & 0x04) != 0);
+			leaf->retain_as_published = ((options & 0x08) != 0);
 			for(i=0; i<context->sub_count; i++){
 				if(!context->subs[i]){
 					context->subs[i] = subhier;
@@ -307,13 +308,13 @@ static int sub__add_recurse(struct mosquitto_db *db, struct mosquitto *context,
 
 	HASH_FIND(hh, subhier->children, UHPA_ACCESS_TOPIC(tokens), tokens->topic_len, branch);
 	if(branch){
-		return sub__add_recurse(db, context, qos, retain_as_published, branch, tokens->next);
+		return sub__add_recurse(db, context, qos, options, branch, tokens->next);
 	}else{
 		/* Not found */
 		branch = sub__add_hier_entry(subhier, &subhier->children, UHPA_ACCESS_TOPIC(tokens), tokens->topic_len);
 		if(!branch) return MOSQ_ERR_NOMEM;
 
-		return sub__add_recurse(db, context, qos, retain_as_published, branch, tokens->next);
+		return sub__add_recurse(db, context, qos, options, branch, tokens->next);
 	}
 }
 
@@ -442,7 +443,7 @@ struct mosquitto__subhier *sub__add_hier_entry(struct mosquitto__subhier *parent
 }
 
 
-int sub__add(struct mosquitto_db *db, struct mosquitto *context, const char *sub, int qos, bool retain_as_published, struct mosquitto__subhier **root)
+int sub__add(struct mosquitto_db *db, struct mosquitto *context, const char *sub, int qos, int options, struct mosquitto__subhier **root)
 {
 	int rc = 0;
 	struct mosquitto__subhier *subhier;
@@ -464,7 +465,7 @@ int sub__add(struct mosquitto_db *db, struct mosquitto *context, const char *sub
 		}
 
 	}
-	rc = sub__add_recurse(db, context, qos, retain_as_published, subhier, tokens);
+	rc = sub__add_recurse(db, context, qos, options, subhier, tokens);
 
 	sub__topic_tokens_free(tokens);