int _mosquitto_send_subscribe(struct mosquitto *mosq, int *mid, bool dup, const char *topic, uint8_t topic_qos) { /* FIXME - only deals with a single topic */ struct _mosquitto_packet *packet = NULL; uint32_t packetlen; uint16_t local_mid; int rc; assert(mosq); assert(topic); packet = _mosquitto_calloc(1, sizeof(struct _mosquitto_packet)); if(!packet) return MOSQ_ERR_NOMEM; packetlen = 2 + 2+strlen(topic) + 1; packet->command = SUBSCRIBE | (dup<<3) | (1<<1); packet->remaining_length = packetlen; rc = _mosquitto_packet_alloc(packet); if(rc){ _mosquitto_free(packet); return rc; } /* Variable header */ local_mid = _mosquitto_mid_generate(mosq); if(mid) *mid = (int)local_mid; _mosquitto_write_uint16(packet, local_mid); /* Payload */ _mosquitto_write_string(packet, topic, strlen(topic)); _mosquitto_write_byte(packet, topic_qos); #ifdef WITH_BROKER # ifdef WITH_BRIDGE _mosquitto_log_printf(mosq, MOSQ_LOG_DEBUG, "Bridge %s sending SUBSCRIBE (Mid: %d, Topic: %s, QoS: %d)", mosq->id, local_mid, topic, topic_qos); # endif #else _mosquitto_log_printf(mosq, MOSQ_LOG_DEBUG, "Client %s sending SUBSCRIBE (Mid: %d, Topic: %s, QoS: %d)", mosq->id, local_mid, topic, topic_qos); #endif return _mosquitto_packet_queue(mosq, packet); }
int _mosquitto_send_connect(struct mosquitto *mosq, uint16_t keepalive, bool clean_session) { struct _mosquitto_packet *packet = NULL; int payloadlen; uint8_t will = 0; uint8_t byte; int rc; uint8_t version = PROTOCOL_VERSION; assert(mosq); assert(mosq->id); packet = _mosquitto_calloc(1, sizeof(struct _mosquitto_packet)); if(!packet) return MOSQ_ERR_NOMEM; payloadlen = 2+strlen(mosq->id); if(mosq->will){ will = 1; assert(mosq->will->topic); payloadlen += 2+strlen(mosq->will->topic) + 2+mosq->will->payloadlen; } if(mosq->username){ payloadlen += 2+strlen(mosq->username); if(mosq->password){ payloadlen += 2+strlen(mosq->password); } } packet->command = CONNECT; packet->remaining_length = 12+payloadlen; rc = _mosquitto_packet_alloc(packet); if(rc){ _mosquitto_free(packet); return rc; } /* Variable header */ _mosquitto_write_string(packet, PROTOCOL_NAME, strlen(PROTOCOL_NAME)); _mosquitto_write_byte(packet, version); byte = (clean_session&0x1)<<1; if(will){ byte = byte | ((mosq->will->retain&0x1)<<5) | ((mosq->will->qos&0x3)<<3) | ((will&0x1)<<2); } if(mosq->username){ byte = byte | 0x1<<7; if(mosq->password){ byte = byte | 0x1<<6; } } _mosquitto_write_byte(packet, byte); _mosquitto_write_uint16(packet, keepalive); /* Payload */ _mosquitto_write_string(packet, mosq->id, strlen(mosq->id)); if(will){ _mosquitto_write_string(packet, mosq->will->topic, strlen(mosq->will->topic)); _mosquitto_write_string(packet, (const char *)mosq->will->payload, mosq->will->payloadlen); } if(mosq->username){ _mosquitto_write_string(packet, mosq->username, strlen(mosq->username)); if(mosq->password){ _mosquitto_write_string(packet, mosq->password, strlen(mosq->password)); } } mosq->keepalive = keepalive; #ifdef WITH_BROKER #else _mosquitto_log_printf(mosq, MOSQ_LOG_DEBUG, "Client %s sending CONNECT", mosq->id); #endif return _mosquitto_packet_queue(mosq, packet); }
void _mosquitto_write_uint16(struct _mosquitto_packet *packet, uint16_t word) { _mosquitto_write_byte(packet, MOSQ_MSB(word)); _mosquitto_write_byte(packet, MOSQ_LSB(word)); }