static int build_http_request(const char* domainName, const char* path,
int ocspReqSz, byte* buf, int bufSize)
{
return XSNPRINTF((char*)buf, bufSize,
"POST %s HTTP/1.1\r\n"
"Host: %s\r\n"
"Content-Length: %d\r\n"
"Content-Type: application/ocsp-request\r\n"
"\r\n",
path, domainName, ocspReqSz);
}
int awsiot_test(MQTTCtx *mqttCtx)
{
int rc = MQTT_CODE_SUCCESS, i;
switch (mqttCtx->stat)
{
case WMQ_BEGIN:
{
PRINTF("AwsIoT Client: QoS %d, Use TLS %d", mqttCtx->qos, mqttCtx->use_tls);
/* Aws IoT requires TLS */
if (!mqttCtx->use_tls) {
return MQTT_CODE_ERROR_BAD_ARG;
}
}
case WMQ_NET_INIT:
{
mqttCtx->stat = WMQ_NET_INIT;
/* Initialize Network */
rc = MqttClientNet_Init(&mqttCtx->net);
if (rc == MQTT_CODE_CONTINUE) {
return rc;
}
PRINTF("MQTT Net Init: %s (%d)",
MqttClient_ReturnCodeToString(rc), rc);
if (rc != MQTT_CODE_SUCCESS) {
goto exit;
}
/* setup tx/rx buffers */
mqttCtx->tx_buf = (byte*)WOLFMQTT_MALLOC(MAX_BUFFER_SIZE);
mqttCtx->rx_buf = (byte*)WOLFMQTT_MALLOC(MAX_BUFFER_SIZE);
}
case WMQ_INIT:
{
mqttCtx->stat = WMQ_INIT;
/* Initialize MqttClient structure */
rc = MqttClient_Init(&mqttCtx->client, &mqttCtx->net, mqtt_message_cb,
mqttCtx->tx_buf, MAX_BUFFER_SIZE, mqttCtx->rx_buf, MAX_BUFFER_SIZE,
mqttCtx->cmd_timeout_ms);
if (rc == MQTT_CODE_CONTINUE) {
return rc;
}
PRINTF("MQTT Init: %s (%d)",
MqttClient_ReturnCodeToString(rc), rc);
if (rc != MQTT_CODE_SUCCESS) {
goto exit;
}
mqttCtx->client.ctx = mqttCtx;
}
case WMQ_TCP_CONN:
{
mqttCtx->stat = WMQ_TCP_CONN;
/* Connect to broker */
rc = MqttClient_NetConnect(&mqttCtx->client, mqttCtx->host, mqttCtx->port,
DEFAULT_CON_TIMEOUT_MS, mqttCtx->use_tls, mqtt_aws_tls_cb);
if (rc == MQTT_CODE_CONTINUE) {
return rc;
}
PRINTF("MQTT Socket Connect: %s (%d)",
MqttClient_ReturnCodeToString(rc), rc);
if (rc != MQTT_CODE_SUCCESS) {
goto exit;
}
}
case WMQ_MQTT_CONN:
{
mqttCtx->stat = WMQ_MQTT_CONN;
XMEMSET(&mqttCtx->connect, 0, sizeof(MqttConnect));
mqttCtx->connect.keep_alive_sec = mqttCtx->keep_alive_sec;
mqttCtx->connect.clean_session = mqttCtx->clean_session;
mqttCtx->connect.client_id = mqttCtx->client_id;
/* Last will and testament sent by broker to subscribers
of topic when broker connection is lost */
XMEMSET(&mqttCtx->lwt_msg, 0, sizeof(mqttCtx->lwt_msg));
mqttCtx->connect.lwt_msg = &mqttCtx->lwt_msg;
mqttCtx->connect.enable_lwt = mqttCtx->enable_lwt;
if (mqttCtx->enable_lwt) {
/* Send client id in LWT payload */
mqttCtx->lwt_msg.qos = mqttCtx->qos;
mqttCtx->lwt_msg.retain = 0;
mqttCtx->lwt_msg.topic_name = AWSIOT_PUBLISH_TOPIC"lwt";
mqttCtx->lwt_msg.buffer = (byte*)mqttCtx->client_id;
mqttCtx->lwt_msg.total_len = (word16)XSTRLEN(mqttCtx->client_id);
}
/* Optional authentication */
mqttCtx->connect.username = mqttCtx->username;
mqttCtx->connect.password = mqttCtx->password;
/* Send Connect and wait for Connect Ack */
rc = MqttClient_Connect(&mqttCtx->client, &mqttCtx->connect);
if (rc == MQTT_CODE_CONTINUE) {
return rc;
}
PRINTF("MQTT Connect: %s (%d)",
MqttClient_ReturnCodeToString(rc), rc);
if (rc != MQTT_CODE_SUCCESS) {
goto disconn;
}
/* Validate Connect Ack info */
PRINTF("MQTT Connect Ack: Return Code %u, Session Present %d",
mqttCtx->connect.ack.return_code,
(mqttCtx->connect.ack.flags &
MQTT_CONNECT_ACK_FLAG_SESSION_PRESENT) ?
1 : 0
);
/* Build list of topics */
mqttCtx->topics[0].topic_filter = mqttCtx->topic_name;
mqttCtx->topics[0].qos = mqttCtx->qos;
/* Subscribe Topic */
XMEMSET(&mqttCtx->subscribe, 0, sizeof(MqttSubscribe));
mqttCtx->subscribe.packet_id = mqtt_get_packetid();
mqttCtx->subscribe.topic_count = sizeof(mqttCtx->topics)/sizeof(MqttTopic);
mqttCtx->subscribe.topics = mqttCtx->topics;
}
case WMQ_SUB:
{
mqttCtx->stat = WMQ_SUB;
rc = MqttClient_Subscribe(&mqttCtx->client, &mqttCtx->subscribe);
if (rc == MQTT_CODE_CONTINUE) {
return rc;
}
PRINTF("MQTT Subscribe: %s (%d)",
MqttClient_ReturnCodeToString(rc), rc);
if (rc != MQTT_CODE_SUCCESS) {
goto disconn;
}
/* show subscribe results */
for (i = 0; i < mqttCtx->subscribe.topic_count; i++) {
mqttCtx->topic = &mqttCtx->subscribe.topics[i];
PRINTF(" Topic %s, Qos %u, Return Code %u",
mqttCtx->topic->topic_filter,
mqttCtx->topic->qos, mqttCtx->topic->return_code);
}
/* Publish Topic */
XSNPRINTF(mqttCtx->buffer.pubMsg, sizeof(mqttCtx->buffer.pubMsg),
"{\"state\":{\"reported\":{\"hardware\":{\"type\":\"%s\",\"firmware_version\":\"%s\"}}}}",
APP_HARDWARE, APP_FIRMWARE_VERSION);
XMEMSET(&mqttCtx->publish, 0, sizeof(MqttPublish));
mqttCtx->publish.retain = 0;
mqttCtx->publish.qos = mqttCtx->qos;
mqttCtx->publish.duplicate = 0;
mqttCtx->publish.topic_name = AWSIOT_PUBLISH_TOPIC;
mqttCtx->publish.packet_id = mqtt_get_packetid();
mqttCtx->publish.buffer = (byte*)mqttCtx->buffer.pubMsg;
mqttCtx->publish.total_len = (word32)XSTRLEN(mqttCtx->buffer.pubMsg);
}
case WMQ_PUB:
{
mqttCtx->stat = WMQ_PUB;
rc = MqttClient_Publish(&mqttCtx->client, &mqttCtx->publish);
if (rc == MQTT_CODE_CONTINUE) {
return rc;
}
PRINTF("MQTT Publish: Topic %s, %s (%d)",
mqttCtx->publish.topic_name, MqttClient_ReturnCodeToString(rc), rc);
if (rc != MQTT_CODE_SUCCESS) {
goto disconn;
}
/* Read Loop */
PRINTF("MQTT Waiting for message...");
MqttClientNet_CheckForCommand_Enable(&mqttCtx->net);
}
case WMQ_WAIT_MSG:
{
mqttCtx->stat = WMQ_WAIT_MSG;
do {
/* Try and read packet */
rc = MqttClient_WaitMessage(&mqttCtx->client, mqttCtx->cmd_timeout_ms);
/* check for test mode or stop */
if (mStopRead || mqttCtx->test_mode) {
rc = MQTT_CODE_SUCCESS;
break;
}
/* check return code */
if (rc == MQTT_CODE_CONTINUE) {
return rc;
}
else if (rc == MQTT_CODE_ERROR_TIMEOUT) {
/* Check to see if command data (stdin) is available */
rc = MqttClientNet_CheckForCommand(&mqttCtx->net,
mqttCtx->rx_buf, MAX_BUFFER_SIZE);
if (rc > 0) {
/* Publish Topic */
XSNPRINTF(mqttCtx->buffer.pubMsg, sizeof(mqttCtx->buffer.pubMsg),
"{\"state\":{\"reported\":{\"msg\":\"%s\"}}}",
mqttCtx->rx_buf);
mqttCtx->stat = WMQ_PUB;
XMEMSET(&mqttCtx->publish, 0, sizeof(MqttPublish));
mqttCtx->publish.retain = 0;
mqttCtx->publish.qos = mqttCtx->qos;
mqttCtx->publish.duplicate = 0;
mqttCtx->publish.topic_name = AWSIOT_PUBLISH_TOPIC;
mqttCtx->publish.packet_id = mqtt_get_packetid();
mqttCtx->publish.buffer = (byte*)mqttCtx->buffer.pubMsg;
mqttCtx->publish.total_len = (word32)XSTRLEN(mqttCtx->buffer.pubMsg);
rc = MqttClient_Publish(&mqttCtx->client, &mqttCtx->publish);
PRINTF("MQTT Publish: Topic %s, %s (%d)",
mqttCtx->publish.topic_name,
MqttClient_ReturnCodeToString(rc), rc);
}
/* Keep Alive */
else {
rc = MqttClient_Ping(&mqttCtx->client);
if (rc == MQTT_CODE_CONTINUE) {
return rc;
}
else if (rc != MQTT_CODE_SUCCESS) {
PRINTF("MQTT Ping Keep Alive Error: %s (%d)",
MqttClient_ReturnCodeToString(rc), rc);
break;
}
}
}
else if (rc != MQTT_CODE_SUCCESS) {
/* There was an error */
PRINTF("MQTT Message Wait: %s (%d)",
MqttClient_ReturnCodeToString(rc), rc);
break;
}
} while (1);
/* Check for error */
if (rc != MQTT_CODE_SUCCESS) {
goto disconn;
}
}
case WMQ_DISCONNECT:
{
PRINTF("MQTT Exiting...");
/* Disconnect */
rc = MqttClient_Disconnect(&mqttCtx->client);
if (rc == MQTT_CODE_CONTINUE) {
return rc;
}
PRINTF("MQTT Disconnect: %s (%d)",
MqttClient_ReturnCodeToString(rc), rc);
if (rc != MQTT_CODE_SUCCESS) {
goto disconn;
}
}
case WMQ_NET_DISCONNECT:
{
mqttCtx->stat = WMQ_NET_DISCONNECT;
rc = MqttClient_NetDisconnect(&mqttCtx->client);
if (rc == MQTT_CODE_CONTINUE) {
return rc;
}
PRINTF("MQTT Socket Disconnect: %s (%d)",
MqttClient_ReturnCodeToString(rc), rc);
}
case WMQ_DONE:
{
mqttCtx->stat = WMQ_DONE;
rc = mqttCtx->return_code;
goto exit;
}
case WMQ_UNSUB: /* not used */
default:
rc = MQTT_CODE_ERROR_STAT;
goto exit;
} /* switch */
disconn:
mqttCtx->stat = WMQ_NET_DISCONNECT;
mqttCtx->return_code = rc;
return MQTT_CODE_CONTINUE;
exit:
/* Free resources */
if (mqttCtx->tx_buf) WOLFMQTT_FREE(mqttCtx->tx_buf);
if (mqttCtx->rx_buf) WOLFMQTT_FREE(mqttCtx->rx_buf);
/* Cleanup network */
MqttClientNet_DeInit(&mqttCtx->net);
return rc;
}
static int tcp_connect(SOCKET_T* sockfd, const char* ip, word16 port)
{
struct sockaddr_storage addr;
int sockaddr_len = sizeof(struct sockaddr_in);
XMEMSET(&addr, 0, sizeof(addr));
#ifdef HAVE_GETADDRINFO
{
struct addrinfo hints;
struct addrinfo* answer = NULL;
char strPort[8];
XMEMSET(&hints, 0, sizeof(hints));
hints.ai_family = AF_UNSPEC;
hints.ai_socktype = SOCK_STREAM;
hints.ai_protocol = IPPROTO_TCP;
XSNPRINTF(strPort, sizeof(strPort), "%d", port);
strPort[7] = '\0';
if (getaddrinfo(ip, strPort, &hints, &answer) < 0 || answer == NULL) {
CYASSL_MSG("no addr info for OCSP responder");
return -1;
}
sockaddr_len = answer->ai_addrlen;
XMEMCPY(&addr, answer->ai_addr, sockaddr_len);
freeaddrinfo(answer);
}
#else /* HAVE_GETADDRINFO */
{
struct hostent* entry = gethostbyname(ip);
struct sockaddr_in *sin = (struct sockaddr_in *)&addr;
if (entry) {
sin->sin_family = AF_INET;
sin->sin_port = htons(port);
XMEMCPY(&sin->sin_addr.s_addr, entry->h_addr_list[0],
entry->h_length);
}
else {
CYASSL_MSG("no addr info for OCSP responder");
return -1;
}
}
#endif /* HAVE_GETADDRINFO */
*sockfd = socket(addr.ss_family, SOCK_STREAM, 0);
if (*sockfd < 0) {
CYASSL_MSG("bad socket fd, out of fds?");
return -1;
}
if (connect(*sockfd, (struct sockaddr *)&addr, sockaddr_len) != 0) {
CYASSL_MSG("OCSP responder tcp connect failed");
return -1;
}
return 0;
}
