int MQTTSProtocol_handleSubscribes(void* pack, int sock, char* clientAddr, Clients* client)
{
int rc = 0;
MQTTS_Subscribe* sub = (MQTTS_Subscribe*)pack;
int isnew;
int topicId = 0;
char* topicName = NULL , *preDefinedTopicName = NULL;
FUNC_ENTRY;
Log(LOG_PROTOCOL, 67, NULL, sock, clientAddr, client ? client->clientID : "",
sub->msgId,
(sub->flags.QoS == 3) ? -1: sub->flags.QoS,
sub->flags.topicIdType);
// NORMAL (topic name is in subscribe packet) or SHORT topic name
if (sub->flags.topicIdType == MQTTS_TOPIC_TYPE_NORMAL || sub->flags.topicIdType == MQTTS_TOPIC_TYPE_SHORT)
{
topicName = sub->topicName;
sub->topicName = NULL;
}
// Pre-defined topic
else if (sub->flags.topicIdType == MQTTS_TOPIC_TYPE_PREDEFINED && client != NULL && sub->topicId != 0)
{
char *name = MQTTSProtocol_getPreRegisteredTopicName(client, sub->topicId) ;
if (name) {
preDefinedTopicName = MQTTSProtocol_replaceTopicNamePlaceholders(client , name ) ;
}
topicName = preDefinedTopicName ;
topicId = sub->topicId;
}
// If topic name not found send SubAck with Rejected - Invalid topic ID
if (topicName == NULL)
rc = MQTTSPacket_send_subAck(client, sub, 0, sub->flags.QoS, MQTTS_RC_REJECTED_INVALID_TOPIC_ID);
else
{
if (sub->flags.topicIdType == MQTTS_TOPIC_TYPE_NORMAL && !Topics_hasWildcards(topicName))
{
char* regTopicName = malloc(strlen(topicName)+1);
strcpy(regTopicName, topicName);
topicId = (MQTTSProtocol_registerTopic(client, regTopicName))->id;
}
isnew = SubscriptionEngines_subscribe(bstate->se, client->clientID,
topicName, sub->flags.QoS, client->noLocal, (client->cleansession == 0), PRIORITY_NORMAL);
if ( (rc = MQTTSPacket_send_subAck(client, sub, topicId, sub->flags.QoS, MQTTS_RC_ACCEPTED)) == 0)
if ((client->noLocal == 0) || isnew)
MQTTProtocol_processRetaineds(client, topicName,sub->flags.QoS, PRIORITY_NORMAL);
}
time( &(client->lastContact) );
MQTTSPacket_free_packet(pack);
if (preDefinedTopicName)
free (preDefinedTopicName);
FUNC_EXIT_RC(rc);
return rc;
}
int MQTTSProtocol_handlePublishes(void* pack, int sock, char* clientAddr, Clients* client)
{
int rc = 0;
char* topicName = NULL, *expandedPreDefinedTopicName = NULL;
MQTTS_Publish* pub = NULL;
FUNC_ENTRY;
pub = (MQTTS_Publish*)pack;
Log(LOG_PROTOCOL, 55, NULL, sock, clientAddr, client ? client->clientID : "",
pub->msgId, pub->flags.QoS, pub->flags.retain);
// Normal - registered topic
if (pub->flags.topicIdType == MQTTS_TOPIC_TYPE_NORMAL && client != NULL && pub->topicId != 0)
{
/* copy the topic name as it will be freed later */
char* name = MQTTSProtocol_getRegisteredTopicName(client, pub->topicId);
if (name)
{
topicName = malloc(strlen(name) + 1);
strcpy(topicName, name);
}
}
// Pre-defined topics
else if (pub->flags.topicIdType == MQTTS_TOPIC_TYPE_PREDEFINED && client != NULL && pub->topicId != 0)
{
/* copy the topic name as it will be freed later */
char *origPreDefinedTopicName = MQTTSProtocol_getPreDefinedTopicName(client, pub->topicId) ;
if (origPreDefinedTopicName)
{
expandedPreDefinedTopicName = MQTTSProtocol_replaceTopicNamePlaceholders(client, origPreDefinedTopicName) ;
}
// If original and expanded predef topic names are same, use expanded
// while it is already a copy of orig name
if (strcmp(origPreDefinedTopicName, expandedPreDefinedTopicName) == 0)
{
topicName = expandedPreDefinedTopicName ;
} else {
topicName = malloc(strlen(origPreDefinedTopicName)+1);
strcpy(topicName, origPreDefinedTopicName);
}
}
// Short topic names
else if (pub->flags.topicIdType == MQTTS_TOPIC_TYPE_SHORT && pub->shortTopic != NULL)
{
topicName = pub->shortTopic;
pub->shortTopic = NULL; /* will be freed in Protocol_handlePublishes */
}
// If topic name not found send PubAck with Rejected - Invalid topic ID
if (topicName == NULL)
{
rc = MQTTSPacket_send_puback(client, pub->topicId , pub->msgId, MQTTS_RC_REJECTED_INVALID_TOPIC_ID);
}
else
{
Publish* publish = malloc(sizeof(Publish));
publish->header.bits.type = PUBLISH;
publish->header.bits.qos = pub->flags.QoS;
publish->header.bits.retain = pub->flags.retain;
publish->header.bits.dup = pub->flags.dup;
publish->msgId = pub->msgId;
publish->payload = pub->data;
publish->payloadlen = pub->dataLen;
publish->topic = topicName;
rc = Protocol_handlePublishes(publish, sock, client, client ? client->clientID : clientAddr, pub->topicId);
// If predefined topic Id and predefined topic name contains [ClientId]
// publish message to expanded topic name too.
if ( pub->flags.topicIdType == MQTTS_TOPIC_TYPE_PREDEFINED && topicName != expandedPreDefinedTopicName)
{
publish = malloc(sizeof(Publish));
publish->header.bits.type = PUBLISH;
publish->header.bits.qos = pub->flags.QoS;
publish->header.bits.retain = pub->flags.retain;
publish->header.bits.dup = pub->flags.dup;
publish->msgId = pub->msgId;
publish->payload = pub->data;
publish->payloadlen = pub->dataLen;
publish->topic = expandedPreDefinedTopicName;
rc = Protocol_handlePublishes(publish, sock, client, client ? client->clientID : clientAddr, pub->topicId);
}
}
if (client != NULL)
time( &(client->lastContact) );
MQTTSPacket_free_packet(pack);
FUNC_EXIT_RC(rc);
return rc;
}
