MQTT client api and example
This code based on ESP8266 port of the embedded C client in Eclipse Paho project (http://www.eclipse.org/paho/) and it port for espressif ESP8266_RTOS_SDK by baoshi (https://github.com/baoshi/ESP-RTOS-Paho.git)
This commit is contained in:
Yudi Ludkevich
Angus Gratton
parent
83c5f91bc0
commit
7e9d5bd2e2
21 changed files with 2793 additions and 0 deletions
3
examples/mqtt_client/Makefile
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3
examples/mqtt_client/Makefile
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@ -0,0 +1,3 @@
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PROGRAM=mqtt_client
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EXTRA_COMPONENTS = extras/paho_mqtt_c
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include ../../common.mk
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221
examples/mqtt_client/mqtt_client.c
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221
examples/mqtt_client/mqtt_client.c
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#include "espressif/esp_common.h"
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#include "esp/uart.h"
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#include <string.h>
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#include <FreeRTOS.h>
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#include <task.h>
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#include <ssid_config.h>
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#include <espressif/esp_sta.h>
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#include <espressif/esp_wifi.h>
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#include <paho_mqtt_c/MQTTESP8266.h>
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#include <paho_mqtt_c/MQTTClient.h>
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#include <semphr.h>
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/* You can use http://test.mosquitto.org/ to test mqtt_client instead
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* of setting up your own MQTT server */
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#define MQTT_HOST ("test.mosquitto.org")
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#define MQTT_PORT 1883
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#define MQTT_USER NULL
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#define MQTT_PASS NULL
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xSemaphoreHandle wifi_alive;
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xQueueHandle publish_queue;
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#define PUB_MSG_LEN 16
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static void beat_task(void *pvParameters)
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{
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portTickType xLastWakeTime = xTaskGetTickCount();
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char msg[PUB_MSG_LEN];
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int count = 0;
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while (1) {
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vTaskDelayUntil(&xLastWakeTime, 10000 / portTICK_RATE_MS);
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printf("beat\r\n");
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snprintf(msg, PUB_MSG_LEN, "Beat %d\r\n", count++);
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if (xQueueSend(publish_queue, (void *)msg, 0) == pdFALSE) {
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printf("Publish queue overflow.\r\n");
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}
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}
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}
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static void topic_received(MessageData *md)
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{
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int i;
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MQTTMessage *message = md->message;
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printf("Received: ");
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for( i = 0; i < md->topic->lenstring.len; ++i)
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printf("%c", md->topic->lenstring.data[ i ]);
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printf(" = ");
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for( i = 0; i < (int)message->payloadlen; ++i)
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printf("%c", ((char *)(message->payload))[i]);
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printf("\r\n");
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}
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static const char * get_my_id(void)
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{
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// Use MAC address for Station as unique ID
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static char my_id[13];
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static bool my_id_done = false;
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int8_t i;
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uint8_t x;
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if (my_id_done)
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return my_id;
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if (!sdk_wifi_get_macaddr(STATION_IF, (uint8_t *)my_id))
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return NULL;
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for (i = 5; i >= 0; --i)
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{
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x = my_id[i] & 0x0F;
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if (x > 9) x += 7;
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my_id[i * 2 + 1] = x + '0';
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x = my_id[i] >> 4;
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if (x > 9) x += 7;
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my_id[i * 2] = x + '0';
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}
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my_id[12] = '\0';
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my_id_done = true;
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return my_id;
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}
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static void mqtt_task(void *pvParameters)
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{
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int ret = 0;
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struct Network network;
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MQTTClient client = DefaultClient;
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char mqtt_client_id[20];
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uint8_t mqtt_buf[100];
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uint8_t mqtt_readbuf[100];
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MQTTPacket_connectData data = MQTTPacket_connectData_initializer;
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NewNetwork( &network );
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memset(mqtt_client_id, 0, sizeof(mqtt_client_id));
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strcpy(mqtt_client_id, "ESP-");
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strcat(mqtt_client_id, get_my_id());
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while(1) {
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xSemaphoreTake(wifi_alive, portMAX_DELAY);
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printf("%s: started\n\r", __func__);
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printf("%s: (Re)connecting to MQTT server %s ... ",__func__,
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MQTT_HOST);
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ret = ConnectNetwork(&network, MQTT_HOST, MQTT_PORT);
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if( ret ){
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printf("error: %d\n\r", ret);
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taskYIELD();
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continue;
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}
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printf("done\n\r");
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NewMQTTClient(&client, &network, 5000, mqtt_buf, 100,
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mqtt_readbuf, 100);
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data.willFlag = 0;
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data.MQTTVersion = 3;
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data.clientID.cstring = mqtt_client_id;
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data.username.cstring = MQTT_USER;
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data.password.cstring = MQTT_PASS;
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data.keepAliveInterval = 10;
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data.cleansession = 0;
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printf("Send MQTT connect ... ");
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ret = MQTTConnect(&client, &data);
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if(ret){
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printf("error: %d\n\r", ret);
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DisconnectNetwork(&network);
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taskYIELD();
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continue;
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}
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printf("done\r\n");
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MQTTSubscribe(&client, "/esptopic", QOS1, topic_received);
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xQueueReset(publish_queue);
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while(1){
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char msg[PUB_MSG_LEN - 1] = "\0";
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while(xQueueReceive(publish_queue, (void *)msg, 0) ==
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pdTRUE){
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printf("got message to publish\r\n");
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MQTTMessage message;
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message.payload = msg;
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message.payloadlen = PUB_MSG_LEN;
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message.dup = 0;
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message.qos = QOS1;
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message.retained = 0;
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ret = MQTTPublish(&client, "/beat", &message);
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if (ret != SUCCESS ){
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printf("error while publishing message: %d\n", ret );
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break;
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}
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}
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ret = MQTTYield(&client, 1000);
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if (ret == DISCONNECTED)
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break;
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}
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printf("Connection dropped, request restart\n\r");
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taskYIELD();
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}
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}
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static void wifi_task(void *pvParameters)
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{
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uint8_t status = 0;
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uint8_t retries = 30;
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struct sdk_station_config config = {
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.ssid = WIFI_SSID,
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.password = WIFI_PASS,
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};
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printf("WiFi: connecting to WiFi\n\r");
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sdk_wifi_set_opmode(STATION_MODE);
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sdk_wifi_station_set_config(&config);
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while(1)
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{
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while ((status != STATION_GOT_IP) && (retries)){
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status = sdk_wifi_station_get_connect_status();
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printf("%s: status = %d\n\r", __func__, status );
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if( status == STATION_WRONG_PASSWORD ){
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printf("WiFi: wrong password\n\r");
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break;
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} else if( status == STATION_NO_AP_FOUND ) {
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printf("WiFi: AP not found\n\r");
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break;
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} else if( status == STATION_CONNECT_FAIL ) {
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printf("WiFi: connection failed\r\n");
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break;
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}
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vTaskDelay( 1000 / portTICK_RATE_MS );
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--retries;
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}
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if (status == STATION_GOT_IP) {
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printf("WiFi: Connected\n\r");
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xSemaphoreGive( wifi_alive );
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taskYIELD();
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}
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while ((status = sdk_wifi_station_get_connect_status()) == STATION_GOT_IP) {
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xSemaphoreGive( wifi_alive );
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taskYIELD();
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}
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printf("WiFi: disconnected\n\r");
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sdk_wifi_station_disconnect();
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vTaskDelay( 1000 / portTICK_RATE_MS );
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}
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}
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void user_init(void)
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{
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uart_set_baud(0, 115200);
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printf("SDK version:%s\n", sdk_system_get_sdk_version());
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vSemaphoreCreateBinary(wifi_alive);
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publish_queue = xQueueCreate(3, PUB_MSG_LEN);
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xTaskCreate(&wifi_task, (int8_t *)"wifi_task", 256, NULL, 2, NULL);
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xTaskCreate(&beat_task, (int8_t *)"beat_task", 256, NULL, 3, NULL);
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xTaskCreate(&mqtt_task, (int8_t *)"mqtt_task", 1024, NULL, 4, NULL);
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}
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32
extras/paho_mqtt_c/LICENSE.txt
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32
extras/paho_mqtt_c/LICENSE.txt
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Software License Agreement (BSD License)
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Copyright (c) 2015, Baoshi Zhu (www.ba0sh1.com)
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All rights reserved.
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Redistribution and use in source and binary forms, with or without modification,
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are permitted provided that the following conditions are met:
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* Redistributions of source code must retain the above copyright notice, this
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list of conditions and the following disclaimer.
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* Redistributions in binary form must reproduce the above copyright notice, this
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list of conditions and the following disclaimer in the documentation and/or
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other materials provided with the distribution.
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* Neither the name of Baoshi Zhu nor the names of its contributors may be
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used to endorse or promote products derived from this software without
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specific prior written permission from me.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
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ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
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ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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Part of this project is based on Eclipse Paho which is copyrighted by IBM corp.
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Refer to the licensing information at the begining of corresponding source files.
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551
extras/paho_mqtt_c/MQTTClient.c
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551
extras/paho_mqtt_c/MQTTClient.c
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/*******************************************************************************
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* Copyright (c) 2014 IBM Corp.
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*
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* All rights reserved. This program and the accompanying materials
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* are made available under the terms of the Eclipse Public License v1.0
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* and Eclipse Distribution License v1.0 which accompany this distribution.
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*
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* The Eclipse Public License is available at
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* http://www.eclipse.org/legal/epl-v10.html
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* and the Eclipse Distribution License is available at
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* http://www.eclipse.org/org/documents/edl-v10.php.
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*
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* Contributors:
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* Allan Stockdill-Mander/Ian Craggs - initial API and implementation and/or initial documentation
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*******************************************************************************/
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#include <espressif/esp_common.h>
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#include <lwip/arch.h>
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#include "MQTTClient.h"
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void NewMessageData(MessageData* md, MQTTString* aTopicName, MQTTMessage* aMessgage) {
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md->topic = aTopicName;
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md->message = aMessgage;
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}
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int getNextPacketId(MQTTClient *c) {
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return c->next_packetid = (c->next_packetid == MAX_PACKET_ID) ? 1 : c->next_packetid + 1;
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}
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int sendPacket(MQTTClient* c, int length, Timer* timer)
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{
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int rc = FAILURE,
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sent = 0;
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while (sent < length && !expired(timer))
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{
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rc = c->ipstack->mqttwrite(c->ipstack, &c->buf[sent], length, left_ms(timer));
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if (rc < 0) // there was an error writing the data
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break;
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sent += rc;
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}
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if (sent == length)
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{
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countdown(&(c->ping_timer), c->keepAliveInterval); // record the fact that we have successfully sent the packet
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rc = SUCCESS;
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}
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else
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rc = FAILURE;
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return rc;
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}
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int decodePacket(MQTTClient* c, int* value, int timeout)
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{
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unsigned char i;
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int multiplier = 1;
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int len = 0;
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const int MAX_NO_OF_REMAINING_LENGTH_BYTES = 4;
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*value = 0;
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do
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{
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int rc = MQTTPACKET_READ_ERROR;
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if (++len > MAX_NO_OF_REMAINING_LENGTH_BYTES)
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{
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rc = MQTTPACKET_READ_ERROR; /* bad data */
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goto exit;
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}
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rc = c->ipstack->mqttread(c->ipstack, &i, 1, timeout);
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if (rc != 1)
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goto exit;
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*value += (i & 127) * multiplier;
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multiplier *= 128;
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} while ((i & 128) != 0);
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exit:
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return len;
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}
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int readPacket(MQTTClient* c, Timer* timer)
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{
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int rc = FAILURE;
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MQTTHeader header = {0};
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int len = 0;
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int rem_len = 0;
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/* 1. read the header byte. This has the packet type in it */
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if (c->ipstack->mqttread(c->ipstack, c->readbuf, 1, left_ms(timer)) != 1)
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goto exit;
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len = 1;
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/* 2. read the remaining length. This is variable in itself */
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decodePacket(c, &rem_len, left_ms(timer));
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len += MQTTPacket_encode(c->readbuf + 1, rem_len); /* put the original remaining length back into the buffer */
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/* 3. read the rest of the buffer using a callback to supply the rest of the data */
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if (rem_len > 0 && (c->ipstack->mqttread(c->ipstack, c->readbuf + len, rem_len, left_ms(timer)) != rem_len))
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goto exit;
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header.byte = c->readbuf[0];
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rc = header.bits.type;
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exit:
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//dmsg_printf("readPacket=%d\r\n", rc);
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return rc;
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}
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// assume topic filter and name is in correct format
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// # can only be at end
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// + and # can only be next to separator
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char isTopicMatched(char* topicFilter, MQTTString* topicName)
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{
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char* curf = topicFilter;
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char* curn = topicName->lenstring.data;
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char* curn_end = curn + topicName->lenstring.len;
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while (*curf && curn < curn_end)
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{
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if (*curn == '/' && *curf != '/')
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break;
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if (*curf != '+' && *curf != '#' && *curf != *curn)
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break;
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if (*curf == '+')
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{ // skip until we meet the next separator, or end of string
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char* nextpos = curn + 1;
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while (nextpos < curn_end && *nextpos != '/')
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nextpos = ++curn + 1;
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}
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else if (*curf == '#')
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curn = curn_end - 1; // skip until end of string
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curf++;
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curn++;
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};
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return (curn == curn_end) && (*curf == '\0');
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}
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int deliverMessage(MQTTClient* c, MQTTString* topicName, MQTTMessage* message)
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{
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int i;
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int rc = FAILURE;
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// we have to find the right message handler - indexed by topic
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for (i = 0; i < MAX_MESSAGE_HANDLERS; ++i)
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{
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if (c->messageHandlers[i].topicFilter != 0 && (MQTTPacket_equals(topicName, (char*)c->messageHandlers[i].topicFilter) ||
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isTopicMatched((char*)c->messageHandlers[i].topicFilter, topicName)))
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{
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if (c->messageHandlers[i].fp != NULL)
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{
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MessageData md;
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NewMessageData(&md, topicName, message);
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c->messageHandlers[i].fp(&md);
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rc = SUCCESS;
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}
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}
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}
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if (rc == FAILURE && c->defaultMessageHandler != NULL)
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{
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MessageData md;
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NewMessageData(&md, topicName, message);
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c->defaultMessageHandler(&md);
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rc = SUCCESS;
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}
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return rc;
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}
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int keepalive(MQTTClient* c)
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{
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int rc = SUCCESS;
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if (c->keepAliveInterval == 0)
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{
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rc = SUCCESS;
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goto exit;
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}
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if (expired(&(c->ping_timer)))
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{
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if (c->ping_outstanding)
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{
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// if ping failure accumulated above MAX_FAIL_ALLOWED, the connection is broken
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++(c->fail_count);
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if (c->fail_count >= MAX_FAIL_ALLOWED)
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{
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rc = DISCONNECTED;
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goto exit;
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}
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}
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else
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{
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Timer timer;
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InitTimer(&timer);
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countdown_ms(&timer, 1000);
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c->ping_outstanding = 1;
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int len = MQTTSerialize_pingreq(c->buf, c->buf_size);
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if (len > 0)
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sendPacket(c, len, &timer);
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}
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||||
// re-arm ping counter
|
||||
countdown(&(c->ping_timer), c->keepAliveInterval);
|
||||
}
|
||||
|
||||
exit:
|
||||
return rc;
|
||||
}
|
||||
|
||||
|
||||
int cycle(MQTTClient* c, Timer* timer)
|
||||
{
|
||||
// read the socket, see what work is due
|
||||
unsigned short packet_type = readPacket(c, timer);
|
||||
|
||||
int len = 0,
|
||||
rc = SUCCESS;
|
||||
|
||||
switch (packet_type)
|
||||
{
|
||||
case CONNACK:
|
||||
case PUBACK:
|
||||
case SUBACK:
|
||||
break;
|
||||
case PUBLISH:
|
||||
{
|
||||
MQTTString topicName;
|
||||
MQTTMessage msg;
|
||||
if (MQTTDeserialize_publish((unsigned char*)&msg.dup, (int*)&msg.qos, (unsigned char*)&msg.retained, (unsigned short*)&msg.id, &topicName,
|
||||
(unsigned char**)&msg.payload, (int*)&msg.payloadlen, c->readbuf, c->readbuf_size) != 1)
|
||||
goto exit;
|
||||
deliverMessage(c, &topicName, &msg);
|
||||
if (msg.qos != QOS0)
|
||||
{
|
||||
if (msg.qos == QOS1)
|
||||
len = MQTTSerialize_ack(c->buf, c->buf_size, PUBACK, 0, msg.id);
|
||||
else if (msg.qos == QOS2)
|
||||
len = MQTTSerialize_ack(c->buf, c->buf_size, PUBREC, 0, msg.id);
|
||||
if (len <= 0)
|
||||
rc = FAILURE;
|
||||
else
|
||||
rc = sendPacket(c, len, timer);
|
||||
if (rc == FAILURE)
|
||||
goto exit; // there was a problem
|
||||
}
|
||||
break;
|
||||
}
|
||||
case PUBREC:
|
||||
{
|
||||
unsigned short mypacketid;
|
||||
unsigned char dup, type;
|
||||
if (MQTTDeserialize_ack(&type, &dup, &mypacketid, c->readbuf, c->readbuf_size) != 1)
|
||||
rc = FAILURE;
|
||||
else if ((len = MQTTSerialize_ack(c->buf, c->buf_size, PUBREL, 0, mypacketid)) <= 0)
|
||||
rc = FAILURE;
|
||||
else if ((rc = sendPacket(c, len, timer)) != SUCCESS) // send the PUBREL packet
|
||||
rc = FAILURE; // there was a problem
|
||||
if (rc == FAILURE)
|
||||
goto exit; // there was a problem
|
||||
break;
|
||||
}
|
||||
case PUBCOMP:
|
||||
break;
|
||||
case PINGRESP:
|
||||
{
|
||||
c->ping_outstanding = 0;
|
||||
c->fail_count = 0;
|
||||
}
|
||||
break;
|
||||
}
|
||||
if (c->isconnected)
|
||||
rc = keepalive(c);
|
||||
exit:
|
||||
if (rc == SUCCESS)
|
||||
rc = packet_type;
|
||||
return rc;
|
||||
}
|
||||
|
||||
|
||||
void NewMQTTClient(MQTTClient* c, Network* network, unsigned int command_timeout_ms, unsigned char* buf, size_t buf_size, unsigned char* readbuf, size_t readbuf_size)
|
||||
{
|
||||
int i;
|
||||
c->ipstack = network;
|
||||
|
||||
for (i = 0; i < MAX_MESSAGE_HANDLERS; ++i)
|
||||
c->messageHandlers[i].topicFilter = 0;
|
||||
c->command_timeout_ms = command_timeout_ms;
|
||||
c->buf = buf;
|
||||
c->buf_size = buf_size;
|
||||
c->readbuf = readbuf;
|
||||
c->readbuf_size = readbuf_size;
|
||||
c->isconnected = 0;
|
||||
c->ping_outstanding = 0;
|
||||
c->fail_count = 0;
|
||||
c->defaultMessageHandler = NULL;
|
||||
InitTimer(&(c->ping_timer));
|
||||
}
|
||||
|
||||
|
||||
int MQTTYield(MQTTClient* c, int timeout_ms)
|
||||
{
|
||||
int rc = SUCCESS;
|
||||
Timer timer;
|
||||
|
||||
InitTimer(&timer);
|
||||
countdown_ms(&timer, timeout_ms);
|
||||
while (!expired(&timer))
|
||||
{
|
||||
rc = cycle(c, &timer);
|
||||
// cycle could return 0 or packet_type or 65535 if nothing is read
|
||||
// cycle returns DISCONNECTED only if keepalive() fails.
|
||||
if (rc == DISCONNECTED)
|
||||
break;
|
||||
rc = SUCCESS;
|
||||
}
|
||||
return rc;
|
||||
}
|
||||
|
||||
|
||||
// only used in single-threaded mode where one command at a time is in process
|
||||
int waitfor(MQTTClient* c, int packet_type, Timer* timer)
|
||||
{
|
||||
int rc = FAILURE;
|
||||
|
||||
do
|
||||
{
|
||||
if (expired(timer))
|
||||
break; // we timed out
|
||||
}
|
||||
while ((rc = cycle(c, timer)) != packet_type);
|
||||
|
||||
return rc;
|
||||
}
|
||||
|
||||
|
||||
int MQTTConnect(MQTTClient* c, MQTTPacket_connectData* options)
|
||||
{
|
||||
Timer connect_timer;
|
||||
int rc = FAILURE;
|
||||
MQTTPacket_connectData default_options = MQTTPacket_connectData_initializer;
|
||||
int len = 0;
|
||||
|
||||
InitTimer(&connect_timer);
|
||||
countdown_ms(&connect_timer, c->command_timeout_ms);
|
||||
|
||||
if (c->isconnected) // don't send connect packet again if we are already connected
|
||||
goto exit;
|
||||
|
||||
if (options == 0)
|
||||
options = &default_options; // set default options if none were supplied
|
||||
|
||||
c->keepAliveInterval = options->keepAliveInterval;
|
||||
countdown(&(c->ping_timer), c->keepAliveInterval);
|
||||
|
||||
if ((len = MQTTSerialize_connect(c->buf, c->buf_size, options)) <= 0)
|
||||
goto exit;
|
||||
if ((rc = sendPacket(c, len, &connect_timer)) != SUCCESS) // send the connect packet
|
||||
goto exit; // there was a problem
|
||||
|
||||
// this will be a blocking call, wait for the connack
|
||||
if (waitfor(c, CONNACK, &connect_timer) == CONNACK)
|
||||
{
|
||||
unsigned char connack_rc = 255;
|
||||
char sessionPresent = 0;
|
||||
if (MQTTDeserialize_connack((unsigned char*)&sessionPresent, &connack_rc, c->readbuf, c->readbuf_size) == 1)
|
||||
rc = connack_rc;
|
||||
else
|
||||
rc = FAILURE;
|
||||
}
|
||||
else
|
||||
rc = FAILURE;
|
||||
|
||||
exit:
|
||||
if (rc == SUCCESS)
|
||||
c->isconnected = 1;
|
||||
return rc;
|
||||
}
|
||||
|
||||
|
||||
int MQTTSubscribe(MQTTClient* c, const char* topic, enum QoS qos, messageHandler handler)
|
||||
{
|
||||
int rc = FAILURE;
|
||||
Timer timer;
|
||||
int len = 0;
|
||||
MQTTString topicStr = MQTTString_initializer;
|
||||
topicStr.cstring = (char *)topic;
|
||||
|
||||
InitTimer(&timer);
|
||||
countdown_ms(&timer, c->command_timeout_ms);
|
||||
if (!c->isconnected)
|
||||
goto exit;
|
||||
|
||||
len = MQTTSerialize_subscribe(c->buf, c->buf_size, 0, getNextPacketId(c), 1, &topicStr, (int*)&qos);
|
||||
if (len <= 0)
|
||||
goto exit;
|
||||
if ((rc = sendPacket(c, len, &timer)) != SUCCESS) // send the subscribe packet
|
||||
{
|
||||
goto exit; // there was a problem
|
||||
}
|
||||
|
||||
if (waitfor(c, SUBACK, &timer) == SUBACK) // wait for suback
|
||||
{
|
||||
int count = 0, grantedQoS = -1;
|
||||
unsigned short mypacketid;
|
||||
if (MQTTDeserialize_suback(&mypacketid, 1, &count, &grantedQoS, c->readbuf, c->readbuf_size) == 1)
|
||||
rc = grantedQoS; // 0, 1, 2 or 0x80
|
||||
if (rc != 0x80)
|
||||
{
|
||||
int i;
|
||||
for (i = 0; i < MAX_MESSAGE_HANDLERS; ++i)
|
||||
{
|
||||
if (c->messageHandlers[i].topicFilter == 0)
|
||||
{
|
||||
c->messageHandlers[i].topicFilter = topic;
|
||||
c->messageHandlers[i].fp = handler;
|
||||
rc = 0;
|
||||
break;
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
else
|
||||
rc = FAILURE;
|
||||
|
||||
exit:
|
||||
return rc;
|
||||
}
|
||||
|
||||
|
||||
int MQTTUnsubscribe(MQTTClient* c, const char* topicFilter)
|
||||
{
|
||||
int rc = FAILURE;
|
||||
Timer timer;
|
||||
MQTTString topic = MQTTString_initializer;
|
||||
topic.cstring = (char *)topicFilter;
|
||||
int len = 0;
|
||||
|
||||
InitTimer(&timer);
|
||||
countdown_ms(&timer, c->command_timeout_ms);
|
||||
|
||||
if (!c->isconnected)
|
||||
goto exit;
|
||||
|
||||
if ((len = MQTTSerialize_unsubscribe(c->buf, c->buf_size, 0, getNextPacketId(c), 1, &topic)) <= 0)
|
||||
goto exit;
|
||||
if ((rc = sendPacket(c, len, &timer)) != SUCCESS) // send the subscribe packet
|
||||
goto exit; // there was a problem
|
||||
|
||||
if (waitfor(c, UNSUBACK, &timer) == UNSUBACK)
|
||||
{
|
||||
unsigned short mypacketid; // should be the same as the packetid above
|
||||
if (MQTTDeserialize_unsuback(&mypacketid, c->readbuf, c->readbuf_size) == 1)
|
||||
rc = 0;
|
||||
}
|
||||
else
|
||||
rc = FAILURE;
|
||||
|
||||
exit:
|
||||
return rc;
|
||||
}
|
||||
|
||||
|
||||
int MQTTPublish(MQTTClient* c, const char* topic, MQTTMessage* message)
|
||||
{
|
||||
int rc = FAILURE;
|
||||
Timer timer;
|
||||
MQTTString topicStr = MQTTString_initializer;
|
||||
topicStr.cstring = (char *)topic;
|
||||
int len = 0;
|
||||
|
||||
InitTimer(&timer);
|
||||
countdown_ms(&timer, c->command_timeout_ms);
|
||||
|
||||
if (!c->isconnected)
|
||||
goto exit;
|
||||
|
||||
if (message->qos == QOS1 || message->qos == QOS2)
|
||||
message->id = getNextPacketId(c);
|
||||
|
||||
len = MQTTSerialize_publish(c->buf, c->buf_size, 0, message->qos, message->retained, message->id,
|
||||
topicStr, (unsigned char*)message->payload, message->payloadlen);
|
||||
if (len <= 0)
|
||||
goto exit;
|
||||
if ((rc = sendPacket(c, len, &timer)) != SUCCESS) // send the subscribe packet
|
||||
{
|
||||
goto exit; // there was a problem
|
||||
}
|
||||
|
||||
if (message->qos == QOS1)
|
||||
{
|
||||
if (waitfor(c, PUBACK, &timer) == PUBACK)
|
||||
{
|
||||
// We still can receive from broker, treat as recoverable
|
||||
c->fail_count = 0;
|
||||
unsigned short mypacketid;
|
||||
unsigned char dup, type;
|
||||
if (MQTTDeserialize_ack(&type, &dup, &mypacketid, c->readbuf, c->readbuf_size) != 1)
|
||||
rc = FAILURE;
|
||||
else
|
||||
rc = SUCCESS;
|
||||
}
|
||||
else
|
||||
{
|
||||
rc = FAILURE;
|
||||
}
|
||||
|
||||
}
|
||||
else if (message->qos == QOS2)
|
||||
{
|
||||
if (waitfor(c, PUBCOMP, &timer) == PUBCOMP)
|
||||
{
|
||||
// We still can receive from broker, treat as recoverable
|
||||
c->fail_count = 0;
|
||||
unsigned short mypacketid;
|
||||
unsigned char dup, type;
|
||||
if (MQTTDeserialize_ack(&type, &dup, &mypacketid, c->readbuf, c->readbuf_size) != 1)
|
||||
rc = FAILURE;
|
||||
else
|
||||
rc = SUCCESS;
|
||||
}
|
||||
else
|
||||
{
|
||||
rc = FAILURE;
|
||||
}
|
||||
}
|
||||
|
||||
exit:
|
||||
return rc;
|
||||
}
|
||||
|
||||
|
||||
int MQTTDisconnect(MQTTClient* c)
|
||||
{
|
||||
int rc = FAILURE;
|
||||
Timer timer; // we might wait for incomplete incoming publishes to complete
|
||||
int len = MQTTSerialize_disconnect(c->buf, c->buf_size);
|
||||
|
||||
InitTimer(&timer);
|
||||
countdown_ms(&timer, c->command_timeout_ms);
|
||||
|
||||
if (len > 0)
|
||||
rc = sendPacket(c, len, &timer); // send the disconnect packet
|
||||
|
||||
c->isconnected = 0;
|
||||
return rc;
|
||||
}
|
||||
|
||||
91
extras/paho_mqtt_c/MQTTClient.h
Normal file
91
extras/paho_mqtt_c/MQTTClient.h
Normal file
|
|
@ -0,0 +1,91 @@
|
|||
/*******************************************************************************
|
||||
* Copyright (c) 2014 IBM Corp.
|
||||
*
|
||||
* All rights reserved. This program and the accompanying materials
|
||||
* are made available under the terms of the Eclipse Public License v1.0
|
||||
* and Eclipse Distribution License v1.0 which accompany this distribution.
|
||||
*
|
||||
* The Eclipse Public License is available at
|
||||
* http://www.eclipse.org/legal/epl-v10.html
|
||||
* and the Eclipse Distribution License is available at
|
||||
* http://www.eclipse.org/org/documents/edl-v10.php.
|
||||
*
|
||||
* Contributors:
|
||||
* Allan Stockdill-Mander/Ian Craggs - initial API and implementation and/or initial documentation
|
||||
*******************************************************************************/
|
||||
|
||||
#ifndef __MQTT_CLIENT_C_
|
||||
#define __MQTT_CLIENT_C_
|
||||
|
||||
#include "MQTTPacket.h"
|
||||
#include "MQTTESP8266.h"
|
||||
|
||||
#define MAX_PACKET_ID 65535
|
||||
#define MAX_MESSAGE_HANDLERS 5
|
||||
#define MAX_FAIL_ALLOWED 2
|
||||
|
||||
enum QoS { QOS0, QOS1, QOS2 };
|
||||
|
||||
// all failure return codes must be negative
|
||||
enum returnCode {DISCONNECTED = -3, BUFFER_OVERFLOW = -2, FAILURE = -1, SUCCESS = 0 };
|
||||
|
||||
void NewTimer(Timer*);
|
||||
|
||||
typedef struct _MQTTMessage
|
||||
{
|
||||
enum QoS qos;
|
||||
char retained;
|
||||
char dup;
|
||||
unsigned short id;
|
||||
void *payload;
|
||||
size_t payloadlen;
|
||||
} MQTTMessage;
|
||||
|
||||
typedef struct _MessageData
|
||||
{
|
||||
MQTTString* topic;
|
||||
MQTTMessage* message;
|
||||
} MessageData;
|
||||
|
||||
typedef void (*messageHandler)(MessageData*);
|
||||
|
||||
struct _MQTTClient
|
||||
{
|
||||
unsigned int next_packetid;
|
||||
unsigned int command_timeout_ms;
|
||||
size_t buf_size, readbuf_size;
|
||||
unsigned char *buf;
|
||||
unsigned char *readbuf;
|
||||
unsigned int keepAliveInterval;
|
||||
char ping_outstanding;
|
||||
int fail_count;
|
||||
int isconnected;
|
||||
|
||||
struct MessageHandlers
|
||||
{
|
||||
const char* topicFilter;
|
||||
void (*fp) (MessageData*);
|
||||
} messageHandlers[MAX_MESSAGE_HANDLERS]; // Message handlers are indexed by subscription topic
|
||||
|
||||
void (*defaultMessageHandler) (MessageData*);
|
||||
|
||||
Network* ipstack;
|
||||
Timer ping_timer;
|
||||
};
|
||||
|
||||
|
||||
typedef struct _MQTTClient MQTTClient;
|
||||
|
||||
|
||||
int MQTTConnect(MQTTClient* c, MQTTPacket_connectData* options);
|
||||
int MQTTPublish(MQTTClient* c, const char* topic, MQTTMessage* message);
|
||||
int MQTTSubscribe(MQTTClient* c, const char* topic, enum QoS qos, messageHandler handler);
|
||||
int MQTTUnsubscribe(MQTTClient* c, const char* topic);
|
||||
int MQTTDisconnect(MQTTClient* c);
|
||||
int MQTTYield(MQTTClient* c, int timeout_ms);
|
||||
|
||||
void NewMQTTClient(MQTTClient*, Network*, unsigned int, unsigned char*, size_t, unsigned char*, size_t);
|
||||
|
||||
#define DefaultClient {0, 0, 0, 0, NULL, NULL, 0, 0, 0}
|
||||
|
||||
#endif
|
||||
136
extras/paho_mqtt_c/MQTTConnect.h
Normal file
136
extras/paho_mqtt_c/MQTTConnect.h
Normal file
|
|
@ -0,0 +1,136 @@
|
|||
/*******************************************************************************
|
||||
* Copyright (c) 2014 IBM Corp.
|
||||
*
|
||||
* All rights reserved. This program and the accompanying materials
|
||||
* are made available under the terms of the Eclipse Public License v1.0
|
||||
* and Eclipse Distribution License v1.0 which accompany this distribution.
|
||||
*
|
||||
* The Eclipse Public License is available at
|
||||
* http://www.eclipse.org/legal/epl-v10.html
|
||||
* and the Eclipse Distribution License is available at
|
||||
* http://www.eclipse.org/org/documents/edl-v10.php.
|
||||
*
|
||||
* Contributors:
|
||||
* Ian Craggs - initial API and implementation and/or initial documentation
|
||||
* Xiang Rong - 442039 Add makefile to Embedded C client
|
||||
*******************************************************************************/
|
||||
|
||||
#ifndef MQTTCONNECT_H_
|
||||
#define MQTTCONNECT_H_
|
||||
|
||||
#if !defined(DLLImport)
|
||||
#define DLLImport
|
||||
#endif
|
||||
#if !defined(DLLExport)
|
||||
#define DLLExport
|
||||
#endif
|
||||
|
||||
|
||||
typedef union
|
||||
{
|
||||
unsigned char all; /**< all connect flags */
|
||||
#if defined(REVERSED)
|
||||
struct
|
||||
{
|
||||
unsigned int username : 1; /**< 3.1 user name */
|
||||
unsigned int password : 1; /**< 3.1 password */
|
||||
unsigned int willRetain : 1; /**< will retain setting */
|
||||
unsigned int willQoS : 2; /**< will QoS value */
|
||||
unsigned int will : 1; /**< will flag */
|
||||
unsigned int cleansession : 1; /**< clean session flag */
|
||||
unsigned int : 1; /**< unused */
|
||||
} bits;
|
||||
#else
|
||||
struct
|
||||
{
|
||||
unsigned int : 1; /**< unused */
|
||||
unsigned int cleansession : 1; /**< cleansession flag */
|
||||
unsigned int will : 1; /**< will flag */
|
||||
unsigned int willQoS : 2; /**< will QoS value */
|
||||
unsigned int willRetain : 1; /**< will retain setting */
|
||||
unsigned int password : 1; /**< 3.1 password */
|
||||
unsigned int username : 1; /**< 3.1 user name */
|
||||
} bits;
|
||||
#endif
|
||||
} MQTTConnectFlags; /**< connect flags byte */
|
||||
|
||||
|
||||
|
||||
/**
|
||||
* Defines the MQTT "Last Will and Testament" (LWT) settings for
|
||||
* the connect packet.
|
||||
*/
|
||||
typedef struct
|
||||
{
|
||||
/** The eyecatcher for this structure. must be MQTW. */
|
||||
char struct_id[4];
|
||||
/** The version number of this structure. Must be 0 */
|
||||
int struct_version;
|
||||
/** The LWT topic to which the LWT message will be published. */
|
||||
MQTTString topicName;
|
||||
/** The LWT payload. */
|
||||
MQTTString message;
|
||||
/**
|
||||
* The retained flag for the LWT message (see MQTTAsync_message.retained).
|
||||
*/
|
||||
unsigned char retained;
|
||||
/**
|
||||
* The quality of service setting for the LWT message (see
|
||||
* MQTTAsync_message.qos and @ref qos).
|
||||
*/
|
||||
char qos;
|
||||
} MQTTPacket_willOptions;
|
||||
|
||||
|
||||
#define MQTTPacket_willOptions_initializer { {'M', 'Q', 'T', 'W'}, 0, {NULL, {0, NULL}}, {NULL, {0, NULL}}, 0, 0 }
|
||||
|
||||
|
||||
typedef struct
|
||||
{
|
||||
/** The eyecatcher for this structure. must be MQTC. */
|
||||
char struct_id[4];
|
||||
/** The version number of this structure. Must be 0 */
|
||||
int struct_version;
|
||||
/** Version of MQTT to be used. 3 = 3.1 4 = 3.1.1
|
||||
*/
|
||||
unsigned char MQTTVersion;
|
||||
MQTTString clientID;
|
||||
unsigned short keepAliveInterval;
|
||||
unsigned char cleansession;
|
||||
unsigned char willFlag;
|
||||
MQTTPacket_willOptions will;
|
||||
MQTTString username;
|
||||
MQTTString password;
|
||||
} MQTTPacket_connectData;
|
||||
|
||||
typedef union
|
||||
{
|
||||
unsigned char all; /**< all connack flags */
|
||||
#if defined(REVERSED)
|
||||
struct
|
||||
{
|
||||
unsigned int sessionpresent : 1; /**< session present flag */
|
||||
unsigned int : 7; /**< unused */
|
||||
} bits;
|
||||
#else
|
||||
struct
|
||||
{
|
||||
unsigned int : 7; /**< unused */
|
||||
unsigned int sessionpresent : 1; /**< session present flag */
|
||||
} bits;
|
||||
#endif
|
||||
} MQTTConnackFlags; /**< connack flags byte */
|
||||
|
||||
#define MQTTPacket_connectData_initializer { {'M', 'Q', 'T', 'C'}, 0, 4, {NULL, {0, NULL}}, 60, 1, 0, \
|
||||
MQTTPacket_willOptions_initializer, {NULL, {0, NULL}}, {NULL, {0, NULL}} }
|
||||
|
||||
DLLExport int MQTTSerialize_connect(unsigned char* buf, int buflen, MQTTPacket_connectData* options);
|
||||
DLLExport int MQTTDeserialize_connect(MQTTPacket_connectData* data, unsigned char* buf, int len);
|
||||
|
||||
DLLExport int MQTTSerialize_connack(unsigned char* buf, int buflen, unsigned char connack_rc, unsigned char sessionPresent);
|
||||
DLLExport int MQTTDeserialize_connack(unsigned char* sessionPresent, unsigned char* connack_rc, unsigned char* buf, int buflen);
|
||||
|
||||
DLLExport int MQTTSerialize_disconnect(unsigned char* buf, int buflen);
|
||||
DLLExport int MQTTSerialize_pingreq(unsigned char* buf, int buflen);
|
||||
|
||||
#endif /* MQTTCONNECT_H_ */
|
||||
214
extras/paho_mqtt_c/MQTTConnectClient.c
Normal file
214
extras/paho_mqtt_c/MQTTConnectClient.c
Normal file
|
|
@ -0,0 +1,214 @@
|
|||
/*******************************************************************************
|
||||
* Copyright (c) 2014 IBM Corp.
|
||||
*
|
||||
* All rights reserved. This program and the accompanying materials
|
||||
* are made available under the terms of the Eclipse Public License v1.0
|
||||
* and Eclipse Distribution License v1.0 which accompany this distribution.
|
||||
*
|
||||
* The Eclipse Public License is available at
|
||||
* http://www.eclipse.org/legal/epl-v10.html
|
||||
* and the Eclipse Distribution License is available at
|
||||
* http://www.eclipse.org/org/documents/edl-v10.php.
|
||||
*
|
||||
* Contributors:
|
||||
* Ian Craggs - initial API and implementation and/or initial documentation
|
||||
*******************************************************************************/
|
||||
#include <espressif/esp_common.h>
|
||||
#include "MQTTPacket.h"
|
||||
#include "StackTrace.h"
|
||||
|
||||
#include <string.h>
|
||||
|
||||
/**
|
||||
* Determines the length of the MQTT connect packet that would be produced using the supplied connect options.
|
||||
* @param options the options to be used to build the connect packet
|
||||
* @return the length of buffer needed to contain the serialized version of the packet
|
||||
*/
|
||||
int MQTTSerialize_connectLength(MQTTPacket_connectData* options)
|
||||
{
|
||||
int len = 0;
|
||||
|
||||
FUNC_ENTRY;
|
||||
|
||||
if (options->MQTTVersion == 3)
|
||||
len = 12; /* variable depending on MQTT or MQIsdp */
|
||||
else if (options->MQTTVersion == 4)
|
||||
len = 10;
|
||||
|
||||
len += MQTTstrlen(options->clientID)+2;
|
||||
if (options->willFlag)
|
||||
len += MQTTstrlen(options->will.topicName)+2 + MQTTstrlen(options->will.message)+2;
|
||||
if (options->username.cstring || options->username.lenstring.data)
|
||||
len += MQTTstrlen(options->username)+2;
|
||||
if (options->password.cstring || options->password.lenstring.data)
|
||||
len += MQTTstrlen(options->password)+2;
|
||||
|
||||
FUNC_EXIT_RC(len);
|
||||
return len;
|
||||
}
|
||||
|
||||
|
||||
/**
|
||||
* Serializes the connect options into the buffer.
|
||||
* @param buf the buffer into which the packet will be serialized
|
||||
* @param len the length in bytes of the supplied buffer
|
||||
* @param options the options to be used to build the connect packet
|
||||
* @return serialized length, or error if 0
|
||||
*/
|
||||
int MQTTSerialize_connect(unsigned char* buf, int buflen, MQTTPacket_connectData* options)
|
||||
{
|
||||
unsigned char *ptr = buf;
|
||||
MQTTHeader header = {0};
|
||||
MQTTConnectFlags flags = {0};
|
||||
int len = 0;
|
||||
int rc = -1;
|
||||
|
||||
FUNC_ENTRY;
|
||||
if (MQTTPacket_len(len = MQTTSerialize_connectLength(options)) > buflen)
|
||||
{
|
||||
rc = MQTTPACKET_BUFFER_TOO_SHORT;
|
||||
goto exit;
|
||||
}
|
||||
|
||||
header.byte = 0;
|
||||
header.bits.type = CONNECT;
|
||||
writeChar(&ptr, header.byte); /* write header */
|
||||
|
||||
ptr += MQTTPacket_encode(ptr, len); /* write remaining length */
|
||||
|
||||
if (options->MQTTVersion == 4)
|
||||
{
|
||||
writeCString(&ptr, "MQTT");
|
||||
writeChar(&ptr, (char) 4);
|
||||
}
|
||||
else
|
||||
{
|
||||
writeCString(&ptr, "MQIsdp");
|
||||
writeChar(&ptr, (char) 3);
|
||||
}
|
||||
|
||||
flags.all = 0;
|
||||
flags.bits.cleansession = options->cleansession;
|
||||
flags.bits.will = (options->willFlag) ? 1 : 0;
|
||||
if (flags.bits.will)
|
||||
{
|
||||
flags.bits.willQoS = options->will.qos;
|
||||
flags.bits.willRetain = options->will.retained;
|
||||
}
|
||||
|
||||
if (options->username.cstring || options->username.lenstring.data)
|
||||
flags.bits.username = 1;
|
||||
if (options->password.cstring || options->password.lenstring.data)
|
||||
flags.bits.password = 1;
|
||||
|
||||
writeChar(&ptr, flags.all);
|
||||
writeInt(&ptr, options->keepAliveInterval);
|
||||
writeMQTTString(&ptr, options->clientID);
|
||||
if (options->willFlag)
|
||||
{
|
||||
writeMQTTString(&ptr, options->will.topicName);
|
||||
writeMQTTString(&ptr, options->will.message);
|
||||
}
|
||||
if (flags.bits.username)
|
||||
writeMQTTString(&ptr, options->username);
|
||||
if (flags.bits.password)
|
||||
writeMQTTString(&ptr, options->password);
|
||||
|
||||
rc = ptr - buf;
|
||||
|
||||
exit: FUNC_EXIT_RC(rc);
|
||||
return rc;
|
||||
}
|
||||
|
||||
|
||||
/**
|
||||
* Deserializes the supplied (wire) buffer into connack data - return code
|
||||
* @param sessionPresent the session present flag returned (only for MQTT 3.1.1)
|
||||
* @param connack_rc returned integer value of the connack return code
|
||||
* @param buf the raw buffer data, of the correct length determined by the remaining length field
|
||||
* @param len the length in bytes of the data in the supplied buffer
|
||||
* @return error code. 1 is success, 0 is failure
|
||||
*/
|
||||
int MQTTDeserialize_connack(unsigned char* sessionPresent, unsigned char* connack_rc, unsigned char* buf, int buflen)
|
||||
{
|
||||
MQTTHeader header = {0};
|
||||
unsigned char* curdata = buf;
|
||||
unsigned char* enddata = NULL;
|
||||
int rc = 0;
|
||||
int mylen;
|
||||
MQTTConnackFlags flags = {0};
|
||||
|
||||
FUNC_ENTRY;
|
||||
header.byte = readChar(&curdata);
|
||||
if (header.bits.type != CONNACK)
|
||||
goto exit;
|
||||
|
||||
curdata += (rc = MQTTPacket_decodeBuf(curdata, &mylen)); /* read remaining length */
|
||||
enddata = curdata + mylen;
|
||||
if (enddata - curdata < 2)
|
||||
goto exit;
|
||||
|
||||
flags.all = readChar(&curdata);
|
||||
*sessionPresent = flags.bits.sessionpresent;
|
||||
*connack_rc = readChar(&curdata);
|
||||
|
||||
rc = 1;
|
||||
exit:
|
||||
FUNC_EXIT_RC(rc);
|
||||
return rc;
|
||||
}
|
||||
|
||||
|
||||
/**
|
||||
* Serializes a 0-length packet into the supplied buffer, ready for writing to a socket
|
||||
* @param buf the buffer into which the packet will be serialized
|
||||
* @param buflen the length in bytes of the supplied buffer, to avoid overruns
|
||||
* @param packettype the message type
|
||||
* @return serialized length, or error if 0
|
||||
*/
|
||||
int MQTTSerialize_zero(unsigned char* buf, int buflen, unsigned char packettype)
|
||||
{
|
||||
MQTTHeader header = {0};
|
||||
int rc = -1;
|
||||
unsigned char *ptr = buf;
|
||||
|
||||
FUNC_ENTRY;
|
||||
if (buflen < 2)
|
||||
{
|
||||
rc = MQTTPACKET_BUFFER_TOO_SHORT;
|
||||
goto exit;
|
||||
}
|
||||
header.byte = 0;
|
||||
header.bits.type = packettype;
|
||||
writeChar(&ptr, header.byte); /* write header */
|
||||
|
||||
ptr += MQTTPacket_encode(ptr, 0); /* write remaining length */
|
||||
rc = ptr - buf;
|
||||
exit:
|
||||
FUNC_EXIT_RC(rc);
|
||||
return rc;
|
||||
}
|
||||
|
||||
|
||||
/**
|
||||
* Serializes a disconnect packet into the supplied buffer, ready for writing to a socket
|
||||
* @param buf the buffer into which the packet will be serialized
|
||||
* @param buflen the length in bytes of the supplied buffer, to avoid overruns
|
||||
* @return serialized length, or error if 0
|
||||
*/
|
||||
int MQTTSerialize_disconnect(unsigned char* buf, int buflen)
|
||||
{
|
||||
return MQTTSerialize_zero(buf, buflen, DISCONNECT);
|
||||
}
|
||||
|
||||
|
||||
/**
|
||||
* Serializes a disconnect packet into the supplied buffer, ready for writing to a socket
|
||||
* @param buf the buffer into which the packet will be serialized
|
||||
* @param buflen the length in bytes of the supplied buffer, to avoid overruns
|
||||
* @return serialized length, or error if 0
|
||||
*/
|
||||
int MQTTSerialize_pingreq(unsigned char* buf, int buflen)
|
||||
{
|
||||
return MQTTSerialize_zero(buf, buflen, PINGREQ);
|
||||
}
|
||||
107
extras/paho_mqtt_c/MQTTDeserializePublish.c
Normal file
107
extras/paho_mqtt_c/MQTTDeserializePublish.c
Normal file
|
|
@ -0,0 +1,107 @@
|
|||
/*******************************************************************************
|
||||
* Copyright (c) 2014 IBM Corp.
|
||||
*
|
||||
* All rights reserved. This program and the accompanying materials
|
||||
* are made available under the terms of the Eclipse Public License v1.0
|
||||
* and Eclipse Distribution License v1.0 which accompany this distribution.
|
||||
*
|
||||
* The Eclipse Public License is available at
|
||||
* http://www.eclipse.org/legal/epl-v10.html
|
||||
* and the Eclipse Distribution License is available at
|
||||
* http://www.eclipse.org/org/documents/edl-v10.php.
|
||||
*
|
||||
* Contributors:
|
||||
* Ian Craggs - initial API and implementation and/or initial documentation
|
||||
*******************************************************************************/
|
||||
#include <espressif/esp_common.h>
|
||||
#include "StackTrace.h"
|
||||
#include "MQTTPacket.h"
|
||||
#include <string.h>
|
||||
|
||||
#define min(a, b) ((a < b) ? 1 : 0)
|
||||
|
||||
/**
|
||||
* Deserializes the supplied (wire) buffer into publish data
|
||||
* @param dup returned integer - the MQTT dup flag
|
||||
* @param qos returned integer - the MQTT QoS value
|
||||
* @param retained returned integer - the MQTT retained flag
|
||||
* @param packetid returned integer - the MQTT packet identifier
|
||||
* @param topicName returned MQTTString - the MQTT topic in the publish
|
||||
* @param payload returned byte buffer - the MQTT publish payload
|
||||
* @param payloadlen returned integer - the length of the MQTT payload
|
||||
* @param buf the raw buffer data, of the correct length determined by the remaining length field
|
||||
* @param buflen the length in bytes of the data in the supplied buffer
|
||||
* @return error code. 1 is success
|
||||
*/
|
||||
int MQTTDeserialize_publish(unsigned char* dup, int* qos, unsigned char* retained, unsigned short* packetid, MQTTString* topicName,
|
||||
unsigned char** payload, int* payloadlen, unsigned char* buf, int buflen)
|
||||
{
|
||||
MQTTHeader header = {0};
|
||||
unsigned char* curdata = buf;
|
||||
unsigned char* enddata = NULL;
|
||||
int rc = 0;
|
||||
int mylen = 0;
|
||||
|
||||
FUNC_ENTRY;
|
||||
header.byte = readChar(&curdata);
|
||||
if (header.bits.type != PUBLISH)
|
||||
goto exit;
|
||||
*dup = header.bits.dup;
|
||||
*qos = header.bits.qos;
|
||||
*retained = header.bits.retain;
|
||||
|
||||
curdata += (rc = MQTTPacket_decodeBuf(curdata, &mylen)); /* read remaining length */
|
||||
enddata = curdata + mylen;
|
||||
|
||||
if (!readMQTTLenString(topicName, &curdata, enddata) ||
|
||||
enddata - curdata < 0) /* do we have enough data to read the protocol version byte? */
|
||||
goto exit;
|
||||
|
||||
if (*qos > 0)
|
||||
*packetid = readInt(&curdata);
|
||||
|
||||
*payloadlen = enddata - curdata;
|
||||
*payload = curdata;
|
||||
rc = 1;
|
||||
exit:
|
||||
FUNC_EXIT_RC(rc);
|
||||
return rc;
|
||||
}
|
||||
|
||||
|
||||
|
||||
/**
|
||||
* Deserializes the supplied (wire) buffer into an ack
|
||||
* @param packettype returned integer - the MQTT packet type
|
||||
* @param dup returned integer - the MQTT dup flag
|
||||
* @param packetid returned integer - the MQTT packet identifier
|
||||
* @param buf the raw buffer data, of the correct length determined by the remaining length field
|
||||
* @param buflen the length in bytes of the data in the supplied buffer
|
||||
* @return error code. 1 is success, 0 is failure
|
||||
*/
|
||||
int MQTTDeserialize_ack(unsigned char* packettype, unsigned char* dup, unsigned short* packetid, unsigned char* buf, int buflen)
|
||||
{
|
||||
MQTTHeader header = {0};
|
||||
unsigned char* curdata = buf;
|
||||
unsigned char* enddata = NULL;
|
||||
int rc = 0;
|
||||
int mylen;
|
||||
|
||||
FUNC_ENTRY;
|
||||
header.byte = readChar(&curdata);
|
||||
*dup = header.bits.dup;
|
||||
*packettype = header.bits.type;
|
||||
|
||||
curdata += (rc = MQTTPacket_decodeBuf(curdata, &mylen)); /* read remaining length */
|
||||
enddata = curdata + mylen;
|
||||
|
||||
if (enddata - curdata < 2)
|
||||
goto exit;
|
||||
*packetid = readInt(&curdata);
|
||||
|
||||
rc = 1;
|
||||
exit:
|
||||
FUNC_EXIT_RC(rc);
|
||||
return rc;
|
||||
}
|
||||
|
||||
187
extras/paho_mqtt_c/MQTTESP8266.c
Normal file
187
extras/paho_mqtt_c/MQTTESP8266.c
Normal file
|
|
@ -0,0 +1,187 @@
|
|||
/**
|
||||
******************************************************************************
|
||||
* @file MQTTESP8266.c
|
||||
* @author Baoshi <mail(at)ba0sh1(dot)com>
|
||||
* @version 0.1
|
||||
* @date Sep 9, 2015
|
||||
* @brief Eclipse Paho ported to ESP8266 RTOS
|
||||
*
|
||||
******************************************************************************
|
||||
* @copyright
|
||||
*
|
||||
* Copyright (c) 2015, Baoshi Zhu. All rights reserved.
|
||||
* Use of this source code is governed by a BSD-style license that can be
|
||||
* found in the LICENSE.txt file.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED 'AS-IS', WITHOUT ANY EXPRESS OR IMPLIED
|
||||
* WARRANTY. IN NO EVENT WILL THE AUTHOR(S) BE HELD LIABLE FOR ANY DAMAGES
|
||||
* ARISING FROM THE USE OF THIS SOFTWARE.
|
||||
*
|
||||
*/
|
||||
|
||||
#include <espressif/esp_common.h>
|
||||
#include <lwip/sockets.h>
|
||||
#include <lwip/inet.h>
|
||||
#include <lwip/netdb.h>
|
||||
#include <lwip/sys.h>
|
||||
#include <string.h>
|
||||
|
||||
#include "MQTTESP8266.h"
|
||||
|
||||
char expired(Timer* timer)
|
||||
{
|
||||
portTickType now = xTaskGetTickCount();
|
||||
int32_t left = timer->end_time - now;
|
||||
return (left < 0);
|
||||
}
|
||||
|
||||
|
||||
void countdown_ms(Timer* timer, unsigned int timeout)
|
||||
{
|
||||
portTickType now = xTaskGetTickCount();
|
||||
timer->end_time = now + timeout / portTICK_RATE_MS;
|
||||
}
|
||||
|
||||
|
||||
void countdown(Timer* timer, unsigned int timeout)
|
||||
{
|
||||
countdown_ms(timer, timeout * 1000);
|
||||
}
|
||||
|
||||
|
||||
int left_ms(Timer* timer)
|
||||
{
|
||||
portTickType now = xTaskGetTickCount();
|
||||
int32_t left = timer->end_time - now;
|
||||
return (left < 0) ? 0 : left / portTICK_RATE_MS;
|
||||
}
|
||||
|
||||
|
||||
void InitTimer(Timer* timer)
|
||||
{
|
||||
timer->end_time = 0;
|
||||
}
|
||||
|
||||
|
||||
|
||||
int mqtt_esp_read(Network* n, unsigned char* buffer, int len, int timeout_ms)
|
||||
{
|
||||
struct timeval tv;
|
||||
fd_set fdset;
|
||||
int rc = 0;
|
||||
int rcvd = 0;
|
||||
FD_ZERO(&fdset);
|
||||
FD_SET(n->my_socket, &fdset);
|
||||
// It seems tv_sec actually means FreeRTOS tick
|
||||
tv.tv_sec = timeout_ms / portTICK_RATE_MS;
|
||||
tv.tv_usec = 0;
|
||||
rc = select(n->my_socket + 1, &fdset, 0, 0, &tv);
|
||||
if ((rc > 0) && (FD_ISSET(n->my_socket, &fdset)))
|
||||
{
|
||||
rcvd = recv(n->my_socket, buffer, len, 0);
|
||||
}
|
||||
else
|
||||
{
|
||||
// select fail
|
||||
return -1;
|
||||
}
|
||||
return rcvd;
|
||||
}
|
||||
|
||||
|
||||
int mqtt_esp_write(Network* n, unsigned char* buffer, int len, int timeout_ms)
|
||||
{
|
||||
struct timeval tv;
|
||||
fd_set fdset;
|
||||
int rc = 0;
|
||||
|
||||
FD_ZERO(&fdset);
|
||||
FD_SET(n->my_socket, &fdset);
|
||||
// It seems tv_sec actually means FreeRTOS tick
|
||||
tv.tv_sec = timeout_ms / portTICK_RATE_MS;
|
||||
tv.tv_usec = 0;
|
||||
rc = select(n->my_socket + 1, 0, &fdset, 0, &tv);
|
||||
if ((rc > 0) && (FD_ISSET(n->my_socket, &fdset)))
|
||||
{
|
||||
rc = send(n->my_socket, buffer, len, 0);
|
||||
}
|
||||
else
|
||||
{
|
||||
// select fail
|
||||
return -1;
|
||||
}
|
||||
return rc;
|
||||
}
|
||||
|
||||
|
||||
|
||||
void NewNetwork(Network* n)
|
||||
{
|
||||
n->my_socket = -1;
|
||||
n->mqttread = mqtt_esp_read;
|
||||
n->mqttwrite = mqtt_esp_write;
|
||||
}
|
||||
|
||||
static int host2addr(const char *hostname , struct in_addr *in)
|
||||
{
|
||||
struct addrinfo hints, *servinfo, *p;
|
||||
struct sockaddr_in *h;
|
||||
int rv;
|
||||
|
||||
memset(&hints, 0, sizeof(hints));
|
||||
hints.ai_family = AF_INET;
|
||||
hints.ai_socktype = SOCK_STREAM;
|
||||
rv = getaddrinfo(hostname, 0 , &hints , &servinfo);
|
||||
if (rv != 0)
|
||||
{
|
||||
return rv;
|
||||
}
|
||||
|
||||
// loop through all the results and get the first resolve
|
||||
for (p = servinfo; p != 0; p = p->ai_next)
|
||||
{
|
||||
h = (struct sockaddr_in *)p->ai_addr;
|
||||
in->s_addr = h->sin_addr.s_addr;
|
||||
}
|
||||
freeaddrinfo(servinfo); // all done with this structure
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
int ConnectNetwork(Network* n, const char* host, int port)
|
||||
{
|
||||
struct sockaddr_in addr;
|
||||
int ret;
|
||||
|
||||
if (host2addr(host, &(addr.sin_addr)) != 0)
|
||||
{
|
||||
return -1;
|
||||
}
|
||||
|
||||
addr.sin_family = AF_INET;
|
||||
addr.sin_port = htons(port);
|
||||
|
||||
n->my_socket = socket(PF_INET, SOCK_STREAM, IPPROTO_TCP);
|
||||
if( n->my_socket < 0 )
|
||||
{
|
||||
// error
|
||||
return -1;
|
||||
}
|
||||
ret = connect(n->my_socket, ( struct sockaddr *)&addr, sizeof(struct sockaddr_in));
|
||||
if( ret < 0 )
|
||||
{
|
||||
// error
|
||||
close(n->my_socket);
|
||||
return ret;
|
||||
}
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
|
||||
int DisconnectNetwork(Network* n)
|
||||
{
|
||||
close(n->my_socket);
|
||||
n->my_socket = -1;
|
||||
return 0;
|
||||
}
|
||||
59
extras/paho_mqtt_c/MQTTESP8266.h
Normal file
59
extras/paho_mqtt_c/MQTTESP8266.h
Normal file
|
|
@ -0,0 +1,59 @@
|
|||
/**
|
||||
******************************************************************************
|
||||
* @file MQTTESP8266.h
|
||||
* @author Baoshi <mail(at)ba0sh1(dot)com>
|
||||
* @version 0.1
|
||||
* @date Sep 9, 2015
|
||||
* @brief Eclipse Paho ported to ESP8266 RTOS
|
||||
*
|
||||
******************************************************************************
|
||||
* @copyright
|
||||
*
|
||||
* Copyright (c) 2015, Baoshi Zhu. All rights reserved.
|
||||
* Use of this source code is governed by a BSD-style license that can be
|
||||
* found in the LICENSE.txt file.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED 'AS-IS', WITHOUT ANY EXPRESS OR IMPLIED
|
||||
* WARRANTY. IN NO EVENT WILL THE AUTHOR(S) BE HELD LIABLE FOR ANY DAMAGES
|
||||
* ARISING FROM THE USE OF THIS SOFTWARE.
|
||||
*
|
||||
*/
|
||||
#ifndef _MQTT_ESP8266_H_
|
||||
#define _MQTT_ESP8266_H_
|
||||
|
||||
#include <FreeRTOS.h>
|
||||
#include <portmacro.h>
|
||||
|
||||
typedef struct Timer Timer;
|
||||
|
||||
struct Timer
|
||||
{
|
||||
portTickType end_time;
|
||||
};
|
||||
|
||||
typedef struct Network Network;
|
||||
|
||||
struct Network
|
||||
{
|
||||
int my_socket;
|
||||
int (*mqttread) (Network*, unsigned char*, int, int);
|
||||
int (*mqttwrite) (Network*, unsigned char*, int, int);
|
||||
};
|
||||
|
||||
char expired(Timer*);
|
||||
void countdown_ms(Timer*, unsigned int);
|
||||
void countdown(Timer*, unsigned int);
|
||||
int left_ms(Timer*);
|
||||
|
||||
void InitTimer(Timer*);
|
||||
|
||||
int mqtt_esp_read(Network*, unsigned char*, int, int);
|
||||
int mqtt_esp_write(Network*, unsigned char*, int, int);
|
||||
void mqtt_esp_disconnect(Network*);
|
||||
|
||||
void NewNetwork(Network* n);
|
||||
int ConnectNetwork(Network* n, const char* host, int port);
|
||||
int DisconnectNetwork(Network* n);
|
||||
|
||||
|
||||
#endif /* _MQTT_ESP8266_H_ */
|
||||
37
extras/paho_mqtt_c/MQTTFormat.h
Normal file
37
extras/paho_mqtt_c/MQTTFormat.h
Normal file
|
|
@ -0,0 +1,37 @@
|
|||
/*******************************************************************************
|
||||
* Copyright (c) 2014 IBM Corp.
|
||||
*
|
||||
* All rights reserved. This program and the accompanying materials
|
||||
* are made available under the terms of the Eclipse Public License v1.0
|
||||
* and Eclipse Distribution License v1.0 which accompany this distribution.
|
||||
*
|
||||
* The Eclipse Public License is available at
|
||||
* http://www.eclipse.org/legal/epl-v10.html
|
||||
* and the Eclipse Distribution License is available at
|
||||
* http://www.eclipse.org/org/documents/edl-v10.php.
|
||||
*
|
||||
* Contributors:
|
||||
* Ian Craggs - initial API and implementation and/or initial documentation
|
||||
*******************************************************************************/
|
||||
|
||||
#if !defined(MQTTFORMAT_H)
|
||||
#define MQTTFORMAT_H
|
||||
|
||||
#include "StackTrace.h"
|
||||
#include "MQTTPacket.h"
|
||||
|
||||
const char* MQTTPacket_getName(unsigned short packetid);
|
||||
int MQTTStringFormat_connect(char* strbuf, int strbuflen, MQTTPacket_connectData* data);
|
||||
int MQTTStringFormat_connack(char* strbuf, int strbuflen, unsigned char connack_rc, unsigned char sessionPresent);
|
||||
int MQTTStringFormat_publish(char* strbuf, int strbuflen, unsigned char dup, int qos, unsigned char retained,
|
||||
unsigned short packetid, MQTTString topicName, unsigned char* payload, int payloadlen);
|
||||
int MQTTStringFormat_ack(char* strbuf, int strbuflen, unsigned char packettype, unsigned char dup, unsigned short packetid);
|
||||
int MQTTStringFormat_subscribe(char* strbuf, int strbuflen, unsigned char dup, unsigned short packetid, int count,
|
||||
MQTTString topicFilters[], int requestedQoSs[]);
|
||||
int MQTTStringFormat_suback(char* strbuf, int strbuflen, unsigned short packetid, int count, int* grantedQoSs);
|
||||
int MQTTStringFormat_unsubscribe(char* strbuf, int strbuflen, unsigned char dup, unsigned short packetid,
|
||||
int count, MQTTString topicFilters[]);
|
||||
char* MQTTFormat_toClientString(char* strbuf, int strbuflen, unsigned char* buf, int buflen);
|
||||
char* MQTTFormat_toServerString(char* strbuf, int strbuflen, unsigned char* buf, int buflen);
|
||||
|
||||
#endif
|
||||
409
extras/paho_mqtt_c/MQTTPacket.c
Normal file
409
extras/paho_mqtt_c/MQTTPacket.c
Normal file
|
|
@ -0,0 +1,409 @@
|
|||
/*******************************************************************************
|
||||
* Copyright (c) 2014 IBM Corp.
|
||||
*
|
||||
* All rights reserved. This program and the accompanying materials
|
||||
* are made available under the terms of the Eclipse Public License v1.0
|
||||
* and Eclipse Distribution License v1.0 which accompany this distribution.
|
||||
*
|
||||
* The Eclipse Public License is available at
|
||||
* http://www.eclipse.org/legal/epl-v10.html
|
||||
* and the Eclipse Distribution License is available at
|
||||
* http://www.eclipse.org/org/documents/edl-v10.php.
|
||||
*
|
||||
* Contributors:
|
||||
* Ian Craggs - initial API and implementation and/or initial documentation
|
||||
* Sergio R. Caprile - non-blocking packet read functions for stream transport
|
||||
*******************************************************************************/
|
||||
#include <espressif/esp_common.h>
|
||||
#include "StackTrace.h"
|
||||
#include "MQTTPacket.h"
|
||||
#include <string.h>
|
||||
|
||||
/**
|
||||
* Encodes the message length according to the MQTT algorithm
|
||||
* @param buf the buffer into which the encoded data is written
|
||||
* @param length the length to be encoded
|
||||
* @return the number of bytes written to buffer
|
||||
*/
|
||||
int MQTTPacket_encode(unsigned char* buf, int length)
|
||||
{
|
||||
int rc = 0;
|
||||
|
||||
FUNC_ENTRY;
|
||||
do
|
||||
{
|
||||
char d = length % 128;
|
||||
length /= 128;
|
||||
/* if there are more digits to encode, set the top bit of this digit */
|
||||
if (length > 0)
|
||||
d |= 0x80;
|
||||
buf[rc++] = d;
|
||||
} while (length > 0);
|
||||
FUNC_EXIT_RC(rc);
|
||||
return rc;
|
||||
}
|
||||
|
||||
|
||||
/**
|
||||
* Decodes the message length according to the MQTT algorithm
|
||||
* @param getcharfn pointer to function to read the next character from the data source
|
||||
* @param value the decoded length returned
|
||||
* @return the number of bytes read from the socket
|
||||
*/
|
||||
int MQTTPacket_decode(int (*getcharfn)(unsigned char*, int), int* value)
|
||||
{
|
||||
unsigned char c;
|
||||
int multiplier = 1;
|
||||
int len = 0;
|
||||
#define MAX_NO_OF_REMAINING_LENGTH_BYTES 4
|
||||
|
||||
FUNC_ENTRY;
|
||||
*value = 0;
|
||||
do
|
||||
{
|
||||
int rc = MQTTPACKET_READ_ERROR;
|
||||
|
||||
if (++len > MAX_NO_OF_REMAINING_LENGTH_BYTES)
|
||||
{
|
||||
rc = MQTTPACKET_READ_ERROR; /* bad data */
|
||||
goto exit;
|
||||
}
|
||||
rc = (*getcharfn)(&c, 1);
|
||||
if (rc != 1)
|
||||
goto exit;
|
||||
*value += (c & 127) * multiplier;
|
||||
multiplier *= 128;
|
||||
} while ((c & 128) != 0);
|
||||
exit:
|
||||
FUNC_EXIT_RC(len);
|
||||
return len;
|
||||
}
|
||||
|
||||
|
||||
int MQTTPacket_len(int rem_len)
|
||||
{
|
||||
rem_len += 1; /* header byte */
|
||||
|
||||
/* now remaining_length field */
|
||||
if (rem_len < 128)
|
||||
rem_len += 1;
|
||||
else if (rem_len < 16384)
|
||||
rem_len += 2;
|
||||
else if (rem_len < 2097151)
|
||||
rem_len += 3;
|
||||
else
|
||||
rem_len += 4;
|
||||
return rem_len;
|
||||
}
|
||||
|
||||
|
||||
static unsigned char* bufptr;
|
||||
|
||||
int bufchar(unsigned char* c, int count)
|
||||
{
|
||||
int i;
|
||||
|
||||
for (i = 0; i < count; ++i)
|
||||
*c = *bufptr++;
|
||||
return count;
|
||||
}
|
||||
|
||||
|
||||
int MQTTPacket_decodeBuf(unsigned char* buf, int* value)
|
||||
{
|
||||
bufptr = buf;
|
||||
return MQTTPacket_decode(bufchar, value);
|
||||
}
|
||||
|
||||
|
||||
/**
|
||||
* Calculates an integer from two bytes read from the input buffer
|
||||
* @param pptr pointer to the input buffer - incremented by the number of bytes used & returned
|
||||
* @return the integer value calculated
|
||||
*/
|
||||
int readInt(unsigned char** pptr)
|
||||
{
|
||||
unsigned char* ptr = *pptr;
|
||||
int len = 256*(*ptr) + (*(ptr+1));
|
||||
*pptr += 2;
|
||||
return len;
|
||||
}
|
||||
|
||||
|
||||
/**
|
||||
* Reads one character from the input buffer.
|
||||
* @param pptr pointer to the input buffer - incremented by the number of bytes used & returned
|
||||
* @return the character read
|
||||
*/
|
||||
char readChar(unsigned char** pptr)
|
||||
{
|
||||
char c = **pptr;
|
||||
(*pptr)++;
|
||||
return c;
|
||||
}
|
||||
|
||||
|
||||
/**
|
||||
* Writes one character to an output buffer.
|
||||
* @param pptr pointer to the output buffer - incremented by the number of bytes used & returned
|
||||
* @param c the character to write
|
||||
*/
|
||||
void writeChar(unsigned char** pptr, char c)
|
||||
{
|
||||
**pptr = c;
|
||||
(*pptr)++;
|
||||
}
|
||||
|
||||
|
||||
/**
|
||||
* Writes an integer as 2 bytes to an output buffer.
|
||||
* @param pptr pointer to the output buffer - incremented by the number of bytes used & returned
|
||||
* @param anInt the integer to write
|
||||
*/
|
||||
void writeInt(unsigned char** pptr, int anInt)
|
||||
{
|
||||
**pptr = (unsigned char)(anInt / 256);
|
||||
(*pptr)++;
|
||||
**pptr = (unsigned char)(anInt % 256);
|
||||
(*pptr)++;
|
||||
}
|
||||
|
||||
|
||||
/**
|
||||
* Writes a "UTF" string to an output buffer. Converts C string to length-delimited.
|
||||
* @param pptr pointer to the output buffer - incremented by the number of bytes used & returned
|
||||
* @param string the C string to write
|
||||
*/
|
||||
void writeCString(unsigned char** pptr, const char* string)
|
||||
{
|
||||
int len = strlen(string);
|
||||
writeInt(pptr, len);
|
||||
memcpy(*pptr, string, len);
|
||||
*pptr += len;
|
||||
}
|
||||
|
||||
|
||||
int getLenStringLen(char* ptr)
|
||||
{
|
||||
int len = 256*((unsigned char)(*ptr)) + (unsigned char)(*(ptr+1));
|
||||
return len;
|
||||
}
|
||||
|
||||
|
||||
void writeMQTTString(unsigned char** pptr, MQTTString mqttstring)
|
||||
{
|
||||
if (mqttstring.lenstring.len > 0)
|
||||
{
|
||||
writeInt(pptr, mqttstring.lenstring.len);
|
||||
memcpy(*pptr, mqttstring.lenstring.data, mqttstring.lenstring.len);
|
||||
*pptr += mqttstring.lenstring.len;
|
||||
}
|
||||
else if (mqttstring.cstring)
|
||||
writeCString(pptr, mqttstring.cstring);
|
||||
else
|
||||
writeInt(pptr, 0);
|
||||
}
|
||||
|
||||
|
||||
/**
|
||||
* @param mqttstring the MQTTString structure into which the data is to be read
|
||||
* @param pptr pointer to the output buffer - incremented by the number of bytes used & returned
|
||||
* @param enddata pointer to the end of the data: do not read beyond
|
||||
* @return 1 if successful, 0 if not
|
||||
*/
|
||||
int readMQTTLenString(MQTTString* mqttstring, unsigned char** pptr, unsigned char* enddata)
|
||||
{
|
||||
int rc = 0;
|
||||
|
||||
FUNC_ENTRY;
|
||||
/* the first two bytes are the length of the string */
|
||||
if (enddata - (*pptr) > 1) /* enough length to read the integer? */
|
||||
{
|
||||
mqttstring->lenstring.len = readInt(pptr); /* increments pptr to point past length */
|
||||
if (&(*pptr)[mqttstring->lenstring.len] <= enddata)
|
||||
{
|
||||
mqttstring->lenstring.data = (char*)*pptr;
|
||||
*pptr += mqttstring->lenstring.len;
|
||||
rc = 1;
|
||||
}
|
||||
}
|
||||
mqttstring->cstring = NULL;
|
||||
FUNC_EXIT_RC(rc);
|
||||
return rc;
|
||||
}
|
||||
|
||||
|
||||
/**
|
||||
* Return the length of the MQTTstring - C string if there is one, otherwise the length delimited string
|
||||
* @param mqttstring the string to return the length of
|
||||
* @return the length of the string
|
||||
*/
|
||||
int MQTTstrlen(MQTTString mqttstring)
|
||||
{
|
||||
int rc = 0;
|
||||
|
||||
if (mqttstring.cstring)
|
||||
rc = strlen(mqttstring.cstring);
|
||||
else
|
||||
rc = mqttstring.lenstring.len;
|
||||
return rc;
|
||||
}
|
||||
|
||||
|
||||
/**
|
||||
* Compares an MQTTString to a C string
|
||||
* @param a the MQTTString to compare
|
||||
* @param bptr the C string to compare
|
||||
* @return boolean - equal or not
|
||||
*/
|
||||
int MQTTPacket_equals(MQTTString* a, char* bptr)
|
||||
{
|
||||
int alen = 0,
|
||||
blen = 0;
|
||||
char *aptr;
|
||||
|
||||
if (a->cstring)
|
||||
{
|
||||
aptr = a->cstring;
|
||||
alen = strlen(a->cstring);
|
||||
}
|
||||
else
|
||||
{
|
||||
aptr = a->lenstring.data;
|
||||
alen = a->lenstring.len;
|
||||
}
|
||||
blen = strlen(bptr);
|
||||
|
||||
return (alen == blen) && (strncmp(aptr, bptr, alen) == 0);
|
||||
}
|
||||
|
||||
|
||||
/**
|
||||
* Helper function to read packet data from some source into a buffer
|
||||
* @param buf the buffer into which the packet will be serialized
|
||||
* @param buflen the length in bytes of the supplied buffer
|
||||
* @param getfn pointer to a function which will read any number of bytes from the needed source
|
||||
* @return integer MQTT packet type, or -1 on error
|
||||
* @note the whole message must fit into the caller's buffer
|
||||
*/
|
||||
int MQTTPacket_read(unsigned char* buf, int buflen, int (*getfn)(unsigned char*, int))
|
||||
{
|
||||
int rc = -1;
|
||||
MQTTHeader header = {0};
|
||||
int len = 0;
|
||||
int rem_len = 0;
|
||||
|
||||
/* 1. read the header byte. This has the packet type in it */
|
||||
if ((*getfn)(buf, 1) != 1)
|
||||
goto exit;
|
||||
|
||||
len = 1;
|
||||
/* 2. read the remaining length. This is variable in itself */
|
||||
MQTTPacket_decode(getfn, &rem_len);
|
||||
len += MQTTPacket_encode(buf + 1, rem_len); /* put the original remaining length back into the buffer */
|
||||
|
||||
/* 3. read the rest of the buffer using a callback to supply the rest of the data */
|
||||
if((rem_len + len) > buflen)
|
||||
goto exit;
|
||||
if ((*getfn)(buf + len, rem_len) != rem_len)
|
||||
goto exit;
|
||||
|
||||
header.byte = buf[0];
|
||||
rc = header.bits.type;
|
||||
exit:
|
||||
return rc;
|
||||
}
|
||||
|
||||
/**
|
||||
* Decodes the message length according to the MQTT algorithm, non-blocking
|
||||
* @param trp pointer to a transport structure holding what is needed to solve getting data from it
|
||||
* @param value the decoded length returned
|
||||
* @return integer the number of bytes read from the socket, 0 for call again, or -1 on error
|
||||
*/
|
||||
static int MQTTPacket_decodenb(MQTTTransport *trp)
|
||||
{
|
||||
unsigned char c;
|
||||
int rc = MQTTPACKET_READ_ERROR;
|
||||
|
||||
FUNC_ENTRY;
|
||||
if(trp->len == 0){ /* initialize on first call */
|
||||
trp->multiplier = 1;
|
||||
trp->rem_len = 0;
|
||||
}
|
||||
do {
|
||||
int frc;
|
||||
if (++(trp->len) > MAX_NO_OF_REMAINING_LENGTH_BYTES)
|
||||
goto exit;
|
||||
if ((frc=(*trp->getfn)(trp->sck, &c, 1)) == -1)
|
||||
goto exit;
|
||||
if (frc == 0){
|
||||
rc = 0;
|
||||
goto exit;
|
||||
}
|
||||
trp->rem_len += (c & 127) * trp->multiplier;
|
||||
trp->multiplier *= 128;
|
||||
} while ((c & 128) != 0);
|
||||
rc = trp->len;
|
||||
exit:
|
||||
FUNC_EXIT_RC(rc);
|
||||
return rc;
|
||||
}
|
||||
|
||||
/**
|
||||
* Helper function to read packet data from some source into a buffer, non-blocking
|
||||
* @param buf the buffer into which the packet will be serialized
|
||||
* @param buflen the length in bytes of the supplied buffer
|
||||
* @param trp pointer to a transport structure holding what is needed to solve getting data from it
|
||||
* @return integer MQTT packet type, 0 for call again, or -1 on error
|
||||
* @note the whole message must fit into the caller's buffer
|
||||
*/
|
||||
int MQTTPacket_readnb(unsigned char* buf, int buflen, MQTTTransport *trp)
|
||||
{
|
||||
int rc = -1, frc;
|
||||
MQTTHeader header = {0};
|
||||
|
||||
switch(trp->state){
|
||||
default:
|
||||
trp->state = 0;
|
||||
/*FALLTHROUGH*/
|
||||
case 0:
|
||||
/* read the header byte. This has the packet type in it */
|
||||
if ((frc=(*trp->getfn)(trp->sck, buf, 1)) == -1)
|
||||
goto exit;
|
||||
if (frc == 0)
|
||||
return 0;
|
||||
trp->len = 0;
|
||||
++trp->state;
|
||||
/*FALLTHROUGH*/
|
||||
/* read the remaining length. This is variable in itself */
|
||||
case 1:
|
||||
if((frc=MQTTPacket_decodenb(trp)) == MQTTPACKET_READ_ERROR)
|
||||
goto exit;
|
||||
if(frc == 0)
|
||||
return 0;
|
||||
trp->len = 1 + MQTTPacket_encode(buf + 1, trp->rem_len); /* put the original remaining length back into the buffer */
|
||||
if((trp->rem_len + trp->len) > buflen)
|
||||
goto exit;
|
||||
++trp->state;
|
||||
/*FALLTHROUGH*/
|
||||
case 2:
|
||||
/* read the rest of the buffer using a callback to supply the rest of the data */
|
||||
if ((frc=(*trp->getfn)(trp->sck, buf + trp->len, trp->rem_len)) == -1)
|
||||
goto exit;
|
||||
if (frc == 0)
|
||||
return 0;
|
||||
trp->rem_len -= frc;
|
||||
trp->len += frc;
|
||||
if(trp->rem_len)
|
||||
return 0;
|
||||
|
||||
header.byte = buf[0];
|
||||
rc = header.bits.type;
|
||||
break;
|
||||
}
|
||||
|
||||
exit:
|
||||
trp->state = 0;
|
||||
return rc;
|
||||
}
|
||||
|
||||
133
extras/paho_mqtt_c/MQTTPacket.h
Normal file
133
extras/paho_mqtt_c/MQTTPacket.h
Normal file
|
|
@ -0,0 +1,133 @@
|
|||
/*******************************************************************************
|
||||
* Copyright (c) 2014 IBM Corp.
|
||||
*
|
||||
* All rights reserved. This program and the accompanying materials
|
||||
* are made available under the terms of the Eclipse Public License v1.0
|
||||
* and Eclipse Distribution License v1.0 which accompany this distribution.
|
||||
*
|
||||
* The Eclipse Public License is available at
|
||||
* http://www.eclipse.org/legal/epl-v10.html
|
||||
* and the Eclipse Distribution License is available at
|
||||
* http://www.eclipse.org/org/documents/edl-v10.php.
|
||||
*
|
||||
* Contributors:
|
||||
* Ian Craggs - initial API and implementation and/or initial documentation
|
||||
* Xiang Rong - 442039 Add makefile to Embedded C client
|
||||
*******************************************************************************/
|
||||
|
||||
#ifndef MQTTPACKET_H_
|
||||
#define MQTTPACKET_H_
|
||||
|
||||
#if defined(__cplusplus) /* If this is a C++ compiler, use C linkage */
|
||||
extern "C" {
|
||||
#endif
|
||||
|
||||
#if defined(WIN32_DLL) || defined(WIN64_DLL)
|
||||
#define DLLImport __declspec(dllimport)
|
||||
#define DLLExport __declspec(dllexport)
|
||||
#elif defined(LINUX_SO)
|
||||
#define DLLImport extern
|
||||
#define DLLExport __attribute__ ((visibility ("default")))
|
||||
#else
|
||||
#define DLLImport
|
||||
#define DLLExport
|
||||
#endif
|
||||
|
||||
enum errors
|
||||
{
|
||||
MQTTPACKET_BUFFER_TOO_SHORT = -2,
|
||||
MQTTPACKET_READ_ERROR = -1,
|
||||
MQTTPACKET_READ_COMPLETE
|
||||
};
|
||||
|
||||
enum msgTypes
|
||||
{
|
||||
CONNECT = 1, CONNACK, PUBLISH, PUBACK, PUBREC, PUBREL,
|
||||
PUBCOMP, SUBSCRIBE, SUBACK, UNSUBSCRIBE, UNSUBACK,
|
||||
PINGREQ, PINGRESP, DISCONNECT
|
||||
};
|
||||
|
||||
/**
|
||||
* Bitfields for the MQTT header byte.
|
||||
*/
|
||||
typedef union
|
||||
{
|
||||
unsigned char byte; /**< the whole byte */
|
||||
#if defined(REVERSED)
|
||||
struct
|
||||
{
|
||||
unsigned int type : 4; /**< message type nibble */
|
||||
unsigned int dup : 1; /**< DUP flag bit */
|
||||
unsigned int qos : 2; /**< QoS value, 0, 1 or 2 */
|
||||
unsigned int retain : 1; /**< retained flag bit */
|
||||
} bits;
|
||||
#else
|
||||
struct
|
||||
{
|
||||
unsigned int retain : 1; /**< retained flag bit */
|
||||
unsigned int qos : 2; /**< QoS value, 0, 1 or 2 */
|
||||
unsigned int dup : 1; /**< DUP flag bit */
|
||||
unsigned int type : 4; /**< message type nibble */
|
||||
} bits;
|
||||
#endif
|
||||
} MQTTHeader;
|
||||
|
||||
typedef struct
|
||||
{
|
||||
int len;
|
||||
char* data;
|
||||
} MQTTLenString;
|
||||
|
||||
typedef struct
|
||||
{
|
||||
char* cstring;
|
||||
MQTTLenString lenstring;
|
||||
} MQTTString;
|
||||
|
||||
#define MQTTString_initializer {NULL, {0, NULL}}
|
||||
|
||||
int MQTTstrlen(MQTTString mqttstring);
|
||||
|
||||
#include "MQTTConnect.h"
|
||||
#include "MQTTPublish.h"
|
||||
#include "MQTTSubscribe.h"
|
||||
#include "MQTTUnsubscribe.h"
|
||||
#include "MQTTFormat.h"
|
||||
|
||||
int MQTTSerialize_ack(unsigned char* buf, int buflen, unsigned char type, unsigned char dup, unsigned short packetid);
|
||||
int MQTTDeserialize_ack(unsigned char* packettype, unsigned char* dup, unsigned short* packetid, unsigned char* buf, int buflen);
|
||||
|
||||
int MQTTPacket_len(int rem_len);
|
||||
int MQTTPacket_equals(MQTTString* a, char* b);
|
||||
|
||||
int MQTTPacket_encode(unsigned char* buf, int length);
|
||||
int MQTTPacket_decode(int (*getcharfn)(unsigned char*, int), int* value);
|
||||
int MQTTPacket_decodeBuf(unsigned char* buf, int* value);
|
||||
|
||||
int readInt(unsigned char** pptr);
|
||||
char readChar(unsigned char** pptr);
|
||||
void writeChar(unsigned char** pptr, char c);
|
||||
void writeInt(unsigned char** pptr, int anInt);
|
||||
int readMQTTLenString(MQTTString* mqttstring, unsigned char** pptr, unsigned char* enddata);
|
||||
void writeCString(unsigned char** pptr, const char* string);
|
||||
void writeMQTTString(unsigned char** pptr, MQTTString mqttstring);
|
||||
|
||||
DLLExport int MQTTPacket_read(unsigned char* buf, int buflen, int (*getfn)(unsigned char*, int));
|
||||
|
||||
typedef struct {
|
||||
int (*getfn)(void *, unsigned char*, int); /* must return -1 for error, 0 for call again, or the number of bytes read */
|
||||
void *sck; /* pointer to whatever the system may use to identify the transport */
|
||||
int multiplier;
|
||||
int rem_len;
|
||||
int len;
|
||||
char state;
|
||||
}MQTTTransport;
|
||||
|
||||
int MQTTPacket_readnb(unsigned char* buf, int buflen, MQTTTransport *trp);
|
||||
|
||||
#ifdef __cplusplus /* If this is a C++ compiler, use C linkage */
|
||||
}
|
||||
#endif
|
||||
|
||||
|
||||
#endif /* MQTTPACKET_H_ */
|
||||
38
extras/paho_mqtt_c/MQTTPublish.h
Normal file
38
extras/paho_mqtt_c/MQTTPublish.h
Normal file
|
|
@ -0,0 +1,38 @@
|
|||
/*******************************************************************************
|
||||
* Copyright (c) 2014 IBM Corp.
|
||||
*
|
||||
* All rights reserved. This program and the accompanying materials
|
||||
* are made available under the terms of the Eclipse Public License v1.0
|
||||
* and Eclipse Distribution License v1.0 which accompany this distribution.
|
||||
*
|
||||
* The Eclipse Public License is available at
|
||||
* http://www.eclipse.org/legal/epl-v10.html
|
||||
* and the Eclipse Distribution License is available at
|
||||
* http://www.eclipse.org/org/documents/edl-v10.php.
|
||||
*
|
||||
* Contributors:
|
||||
* Ian Craggs - initial API and implementation and/or initial documentation
|
||||
* Xiang Rong - 442039 Add makefile to Embedded C client
|
||||
*******************************************************************************/
|
||||
|
||||
#ifndef MQTTPUBLISH_H_
|
||||
#define MQTTPUBLISH_H_
|
||||
|
||||
#if !defined(DLLImport)
|
||||
#define DLLImport
|
||||
#endif
|
||||
#if !defined(DLLExport)
|
||||
#define DLLExport
|
||||
#endif
|
||||
|
||||
DLLExport int MQTTSerialize_publish(unsigned char* buf, int buflen, unsigned char dup, int qos, unsigned char retained, unsigned short packetid,
|
||||
MQTTString topicName, unsigned char* payload, int payloadlen);
|
||||
|
||||
DLLExport int MQTTDeserialize_publish(unsigned char* dup, int* qos, unsigned char* retained, unsigned short* packetid, MQTTString* topicName,
|
||||
unsigned char** payload, int* payloadlen, unsigned char* buf, int len);
|
||||
|
||||
DLLExport int MQTTSerialize_puback(unsigned char* buf, int buflen, unsigned short packetid);
|
||||
DLLExport int MQTTSerialize_pubrel(unsigned char* buf, int buflen, unsigned char dup, unsigned short packetid);
|
||||
DLLExport int MQTTSerialize_pubcomp(unsigned char* buf, int buflen, unsigned short packetid);
|
||||
|
||||
#endif /* MQTTPUBLISH_H_ */
|
||||
169
extras/paho_mqtt_c/MQTTSerializePublish.c
Normal file
169
extras/paho_mqtt_c/MQTTSerializePublish.c
Normal file
|
|
@ -0,0 +1,169 @@
|
|||
/*******************************************************************************
|
||||
* Copyright (c) 2014 IBM Corp.
|
||||
*
|
||||
* All rights reserved. This program and the accompanying materials
|
||||
* are made available under the terms of the Eclipse Public License v1.0
|
||||
* and Eclipse Distribution License v1.0 which accompany this distribution.
|
||||
*
|
||||
* The Eclipse Public License is available at
|
||||
* http://www.eclipse.org/legal/epl-v10.html
|
||||
* and the Eclipse Distribution License is available at
|
||||
* http://www.eclipse.org/org/documents/edl-v10.php.
|
||||
*
|
||||
* Contributors:
|
||||
* Ian Craggs - initial API and implementation and/or initial documentation
|
||||
* Ian Craggs - fix for https://bugs.eclipse.org/bugs/show_bug.cgi?id=453144
|
||||
*******************************************************************************/
|
||||
#include <espressif/esp_common.h>
|
||||
#include "MQTTPacket.h"
|
||||
#include "StackTrace.h"
|
||||
|
||||
#include <string.h>
|
||||
|
||||
|
||||
/**
|
||||
* Determines the length of the MQTT publish packet that would be produced using the supplied parameters
|
||||
* @param qos the MQTT QoS of the publish (packetid is omitted for QoS 0)
|
||||
* @param topicName the topic name to be used in the publish
|
||||
* @param payloadlen the length of the payload to be sent
|
||||
* @return the length of buffer needed to contain the serialized version of the packet
|
||||
*/
|
||||
int MQTTSerialize_publishLength(int qos, MQTTString topicName, int payloadlen)
|
||||
{
|
||||
int len = 0;
|
||||
|
||||
len += 2 + MQTTstrlen(topicName) + payloadlen;
|
||||
if (qos > 0)
|
||||
len += 2; /* packetid */
|
||||
return len;
|
||||
}
|
||||
|
||||
|
||||
/**
|
||||
* Serializes the supplied publish data into the supplied buffer, ready for sending
|
||||
* @param buf the buffer into which the packet will be serialized
|
||||
* @param buflen the length in bytes of the supplied buffer
|
||||
* @param dup integer - the MQTT dup flag
|
||||
* @param qos integer - the MQTT QoS value
|
||||
* @param retained integer - the MQTT retained flag
|
||||
* @param packetid integer - the MQTT packet identifier
|
||||
* @param topicName MQTTString - the MQTT topic in the publish
|
||||
* @param payload byte buffer - the MQTT publish payload
|
||||
* @param payloadlen integer - the length of the MQTT payload
|
||||
* @return the length of the serialized data. <= 0 indicates error
|
||||
*/
|
||||
int MQTTSerialize_publish(unsigned char* buf, int buflen, unsigned char dup, int qos, unsigned char retained, unsigned short packetid,
|
||||
MQTTString topicName, unsigned char* payload, int payloadlen)
|
||||
{
|
||||
unsigned char *ptr = buf;
|
||||
MQTTHeader header = {0};
|
||||
int rem_len = 0;
|
||||
int rc = 0;
|
||||
|
||||
FUNC_ENTRY;
|
||||
if (MQTTPacket_len(rem_len = MQTTSerialize_publishLength(qos, topicName, payloadlen)) > buflen)
|
||||
{
|
||||
rc = MQTTPACKET_BUFFER_TOO_SHORT;
|
||||
goto exit;
|
||||
}
|
||||
|
||||
header.bits.type = PUBLISH;
|
||||
header.bits.dup = dup;
|
||||
header.bits.qos = qos;
|
||||
header.bits.retain = retained;
|
||||
writeChar(&ptr, header.byte); /* write header */
|
||||
|
||||
ptr += MQTTPacket_encode(ptr, rem_len); /* write remaining length */;
|
||||
|
||||
writeMQTTString(&ptr, topicName);
|
||||
|
||||
if (qos > 0)
|
||||
writeInt(&ptr, packetid);
|
||||
|
||||
memcpy(ptr, payload, payloadlen);
|
||||
ptr += payloadlen;
|
||||
|
||||
rc = ptr - buf;
|
||||
|
||||
exit:
|
||||
FUNC_EXIT_RC(rc);
|
||||
return rc;
|
||||
}
|
||||
|
||||
|
||||
|
||||
/**
|
||||
* Serializes the ack packet into the supplied buffer.
|
||||
* @param buf the buffer into which the packet will be serialized
|
||||
* @param buflen the length in bytes of the supplied buffer
|
||||
* @param type the MQTT packet type
|
||||
* @param dup the MQTT dup flag
|
||||
* @param packetid the MQTT packet identifier
|
||||
* @return serialized length, or error if 0
|
||||
*/
|
||||
int MQTTSerialize_ack(unsigned char* buf, int buflen, unsigned char packettype, unsigned char dup, unsigned short packetid)
|
||||
{
|
||||
MQTTHeader header = {0};
|
||||
int rc = 0;
|
||||
unsigned char *ptr = buf;
|
||||
|
||||
FUNC_ENTRY;
|
||||
if (buflen < 4)
|
||||
{
|
||||
rc = MQTTPACKET_BUFFER_TOO_SHORT;
|
||||
goto exit;
|
||||
}
|
||||
header.bits.type = packettype;
|
||||
header.bits.dup = dup;
|
||||
header.bits.qos = (packettype == PUBREL) ? 1 : 0;
|
||||
writeChar(&ptr, header.byte); /* write header */
|
||||
|
||||
ptr += MQTTPacket_encode(ptr, 2); /* write remaining length */
|
||||
writeInt(&ptr, packetid);
|
||||
rc = ptr - buf;
|
||||
exit:
|
||||
FUNC_EXIT_RC(rc);
|
||||
return rc;
|
||||
}
|
||||
|
||||
|
||||
/**
|
||||
* Serializes a puback packet into the supplied buffer.
|
||||
* @param buf the buffer into which the packet will be serialized
|
||||
* @param buflen the length in bytes of the supplied buffer
|
||||
* @param packetid integer - the MQTT packet identifier
|
||||
* @return serialized length, or error if 0
|
||||
*/
|
||||
int MQTTSerialize_puback(unsigned char* buf, int buflen, unsigned short packetid)
|
||||
{
|
||||
return MQTTSerialize_ack(buf, buflen, PUBACK, 0, packetid);
|
||||
}
|
||||
|
||||
|
||||
/**
|
||||
* Serializes a pubrel packet into the supplied buffer.
|
||||
* @param buf the buffer into which the packet will be serialized
|
||||
* @param buflen the length in bytes of the supplied buffer
|
||||
* @param dup integer - the MQTT dup flag
|
||||
* @param packetid integer - the MQTT packet identifier
|
||||
* @return serialized length, or error if 0
|
||||
*/
|
||||
int MQTTSerialize_pubrel(unsigned char* buf, int buflen, unsigned char dup, unsigned short packetid)
|
||||
{
|
||||
return MQTTSerialize_ack(buf, buflen, PUBREL, dup, packetid);
|
||||
}
|
||||
|
||||
|
||||
/**
|
||||
* Serializes a pubrel packet into the supplied buffer.
|
||||
* @param buf the buffer into which the packet will be serialized
|
||||
* @param buflen the length in bytes of the supplied buffer
|
||||
* @param packetid integer - the MQTT packet identifier
|
||||
* @return serialized length, or error if 0
|
||||
*/
|
||||
int MQTTSerialize_pubcomp(unsigned char* buf, int buflen, unsigned short packetid)
|
||||
{
|
||||
return MQTTSerialize_ack(buf, buflen, PUBCOMP, 0, packetid);
|
||||
}
|
||||
|
||||
|
||||
39
extras/paho_mqtt_c/MQTTSubscribe.h
Normal file
39
extras/paho_mqtt_c/MQTTSubscribe.h
Normal file
|
|
@ -0,0 +1,39 @@
|
|||
/*******************************************************************************
|
||||
* Copyright (c) 2014 IBM Corp.
|
||||
*
|
||||
* All rights reserved. This program and the accompanying materials
|
||||
* are made available under the terms of the Eclipse Public License v1.0
|
||||
* and Eclipse Distribution License v1.0 which accompany this distribution.
|
||||
*
|
||||
* The Eclipse Public License is available at
|
||||
* http://www.eclipse.org/legal/epl-v10.html
|
||||
* and the Eclipse Distribution License is available at
|
||||
* http://www.eclipse.org/org/documents/edl-v10.php.
|
||||
*
|
||||
* Contributors:
|
||||
* Ian Craggs - initial API and implementation and/or initial documentation
|
||||
* Xiang Rong - 442039 Add makefile to Embedded C client
|
||||
*******************************************************************************/
|
||||
|
||||
#ifndef MQTTSUBSCRIBE_H_
|
||||
#define MQTTSUBSCRIBE_H_
|
||||
|
||||
#if !defined(DLLImport)
|
||||
#define DLLImport
|
||||
#endif
|
||||
#if !defined(DLLExport)
|
||||
#define DLLExport
|
||||
#endif
|
||||
|
||||
DLLExport int MQTTSerialize_subscribe(unsigned char* buf, int buflen, unsigned char dup, unsigned short packetid,
|
||||
int count, MQTTString topicFilters[], int requestedQoSs[]);
|
||||
|
||||
DLLExport int MQTTDeserialize_subscribe(unsigned char* dup, unsigned short* packetid,
|
||||
int maxcount, int* count, MQTTString topicFilters[], int requestedQoSs[], unsigned char* buf, int len);
|
||||
|
||||
DLLExport int MQTTSerialize_suback(unsigned char* buf, int buflen, unsigned short packetid, int count, int* grantedQoSs);
|
||||
|
||||
DLLExport int MQTTDeserialize_suback(unsigned short* packetid, int maxcount, int* count, int grantedQoSs[], unsigned char* buf, int len);
|
||||
|
||||
|
||||
#endif /* MQTTSUBSCRIBE_H_ */
|
||||
137
extras/paho_mqtt_c/MQTTSubscribeClient.c
Normal file
137
extras/paho_mqtt_c/MQTTSubscribeClient.c
Normal file
|
|
@ -0,0 +1,137 @@
|
|||
/*******************************************************************************
|
||||
* Copyright (c) 2014 IBM Corp.
|
||||
*
|
||||
* All rights reserved. This program and the accompanying materials
|
||||
* are made available under the terms of the Eclipse Public License v1.0
|
||||
* and Eclipse Distribution License v1.0 which accompany this distribution.
|
||||
*
|
||||
* The Eclipse Public License is available at
|
||||
* http://www.eclipse.org/legal/epl-v10.html
|
||||
* and the Eclipse Distribution License is available at
|
||||
* http://www.eclipse.org/org/documents/edl-v10.php.
|
||||
*
|
||||
* Contributors:
|
||||
* Ian Craggs - initial API and implementation and/or initial documentation
|
||||
*******************************************************************************/
|
||||
#include <espressif/esp_common.h>
|
||||
#include "MQTTPacket.h"
|
||||
#include "StackTrace.h"
|
||||
|
||||
#include <string.h>
|
||||
|
||||
/**
|
||||
* Determines the length of the MQTT subscribe packet that would be produced using the supplied parameters
|
||||
* @param count the number of topic filter strings in topicFilters
|
||||
* @param topicFilters the array of topic filter strings to be used in the publish
|
||||
* @return the length of buffer needed to contain the serialized version of the packet
|
||||
*/
|
||||
int MQTTSerialize_subscribeLength(int count, MQTTString topicFilters[])
|
||||
{
|
||||
int i;
|
||||
int len = 2; /* packetid */
|
||||
|
||||
for (i = 0; i < count; ++i)
|
||||
len += 2 + MQTTstrlen(topicFilters[i]) + 1; /* length + topic + req_qos */
|
||||
return len;
|
||||
}
|
||||
|
||||
|
||||
/**
|
||||
* Serializes the supplied subscribe data into the supplied buffer, ready for sending
|
||||
* @param buf the buffer into which the packet will be serialized
|
||||
* @param buflen the length in bytes of the supplied bufferr
|
||||
* @param dup integer - the MQTT dup flag
|
||||
* @param packetid integer - the MQTT packet identifier
|
||||
* @param count - number of members in the topicFilters and reqQos arrays
|
||||
* @param topicFilters - array of topic filter names
|
||||
* @param requestedQoSs - array of requested QoS
|
||||
* @return the length of the serialized data. <= 0 indicates error
|
||||
*/
|
||||
int MQTTSerialize_subscribe(unsigned char* buf, int buflen, unsigned char dup, unsigned short packetid, int count,
|
||||
MQTTString topicFilters[], int requestedQoSs[])
|
||||
{
|
||||
unsigned char *ptr = buf;
|
||||
MQTTHeader header = {0};
|
||||
int rem_len = 0;
|
||||
int rc = 0;
|
||||
int i = 0;
|
||||
|
||||
FUNC_ENTRY;
|
||||
if (MQTTPacket_len(rem_len = MQTTSerialize_subscribeLength(count, topicFilters)) > buflen)
|
||||
{
|
||||
rc = MQTTPACKET_BUFFER_TOO_SHORT;
|
||||
goto exit;
|
||||
}
|
||||
|
||||
header.byte = 0;
|
||||
header.bits.type = SUBSCRIBE;
|
||||
header.bits.dup = dup;
|
||||
header.bits.qos = 1;
|
||||
writeChar(&ptr, header.byte); /* write header */
|
||||
|
||||
ptr += MQTTPacket_encode(ptr, rem_len); /* write remaining length */;
|
||||
|
||||
writeInt(&ptr, packetid);
|
||||
|
||||
for (i = 0; i < count; ++i)
|
||||
{
|
||||
writeMQTTString(&ptr, topicFilters[i]);
|
||||
writeChar(&ptr, requestedQoSs[i]);
|
||||
}
|
||||
|
||||
rc = ptr - buf;
|
||||
exit:
|
||||
FUNC_EXIT_RC(rc);
|
||||
return rc;
|
||||
}
|
||||
|
||||
|
||||
|
||||
/**
|
||||
* Deserializes the supplied (wire) buffer into suback data
|
||||
* @param packetid returned integer - the MQTT packet identifier
|
||||
* @param maxcount - the maximum number of members allowed in the grantedQoSs array
|
||||
* @param count returned integer - number of members in the grantedQoSs array
|
||||
* @param grantedQoSs returned array of integers - the granted qualities of service
|
||||
* @param buf the raw buffer data, of the correct length determined by the remaining length field
|
||||
* @param buflen the length in bytes of the data in the supplied buffer
|
||||
* @return error code. 1 is success, 0 is failure
|
||||
*/
|
||||
int MQTTDeserialize_suback(unsigned short* packetid, int maxcount, int* count, int grantedQoSs[], unsigned char* buf, int buflen)
|
||||
{
|
||||
MQTTHeader header = {0};
|
||||
unsigned char* curdata = buf;
|
||||
unsigned char* enddata = NULL;
|
||||
int rc = 0;
|
||||
int mylen;
|
||||
|
||||
FUNC_ENTRY;
|
||||
header.byte = readChar(&curdata);
|
||||
if (header.bits.type != SUBACK)
|
||||
goto exit;
|
||||
|
||||
curdata += (rc = MQTTPacket_decodeBuf(curdata, &mylen)); /* read remaining length */
|
||||
enddata = curdata + mylen;
|
||||
if (enddata - curdata < 2)
|
||||
goto exit;
|
||||
|
||||
*packetid = readInt(&curdata);
|
||||
|
||||
*count = 0;
|
||||
while (curdata < enddata)
|
||||
{
|
||||
if (*count > maxcount)
|
||||
{
|
||||
rc = -1;
|
||||
goto exit;
|
||||
}
|
||||
grantedQoSs[(*count)++] = readChar(&curdata);
|
||||
}
|
||||
|
||||
rc = 1;
|
||||
exit:
|
||||
FUNC_EXIT_RC(rc);
|
||||
return rc;
|
||||
}
|
||||
|
||||
|
||||
38
extras/paho_mqtt_c/MQTTUnsubscribe.h
Normal file
38
extras/paho_mqtt_c/MQTTUnsubscribe.h
Normal file
|
|
@ -0,0 +1,38 @@
|
|||
/*******************************************************************************
|
||||
* Copyright (c) 2014 IBM Corp.
|
||||
*
|
||||
* All rights reserved. This program and the accompanying materials
|
||||
* are made available under the terms of the Eclipse Public License v1.0
|
||||
* and Eclipse Distribution License v1.0 which accompany this distribution.
|
||||
*
|
||||
* The Eclipse Public License is available at
|
||||
* http://www.eclipse.org/legal/epl-v10.html
|
||||
* and the Eclipse Distribution License is available at
|
||||
* http://www.eclipse.org/org/documents/edl-v10.php.
|
||||
*
|
||||
* Contributors:
|
||||
* Ian Craggs - initial API and implementation and/or initial documentation
|
||||
* Xiang Rong - 442039 Add makefile to Embedded C client
|
||||
*******************************************************************************/
|
||||
|
||||
#ifndef MQTTUNSUBSCRIBE_H_
|
||||
#define MQTTUNSUBSCRIBE_H_
|
||||
|
||||
#if !defined(DLLImport)
|
||||
#define DLLImport
|
||||
#endif
|
||||
#if !defined(DLLExport)
|
||||
#define DLLExport
|
||||
#endif
|
||||
|
||||
DLLExport int MQTTSerialize_unsubscribe(unsigned char* buf, int buflen, unsigned char dup, unsigned short packetid,
|
||||
int count, MQTTString topicFilters[]);
|
||||
|
||||
DLLExport int MQTTDeserialize_unsubscribe(unsigned char* dup, unsigned short* packetid, int max_count, int* count, MQTTString topicFilters[],
|
||||
unsigned char* buf, int len);
|
||||
|
||||
DLLExport int MQTTSerialize_unsuback(unsigned char* buf, int buflen, unsigned short packetid);
|
||||
|
||||
DLLExport int MQTTDeserialize_unsuback(unsigned short* packetid, unsigned char* buf, int len);
|
||||
|
||||
#endif /* MQTTUNSUBSCRIBE_H_ */
|
||||
106
extras/paho_mqtt_c/MQTTUnsubscribeClient.c
Normal file
106
extras/paho_mqtt_c/MQTTUnsubscribeClient.c
Normal file
|
|
@ -0,0 +1,106 @@
|
|||
/*******************************************************************************
|
||||
* Copyright (c) 2014 IBM Corp.
|
||||
*
|
||||
* All rights reserved. This program and the accompanying materials
|
||||
* are made available under the terms of the Eclipse Public License v1.0
|
||||
* and Eclipse Distribution License v1.0 which accompany this distribution.
|
||||
*
|
||||
* The Eclipse Public License is available at
|
||||
* http://www.eclipse.org/legal/epl-v10.html
|
||||
* and the Eclipse Distribution License is available at
|
||||
* http://www.eclipse.org/org/documents/edl-v10.php.
|
||||
*
|
||||
* Contributors:
|
||||
* Ian Craggs - initial API and implementation and/or initial documentation
|
||||
*******************************************************************************/
|
||||
#include <espressif/esp_common.h>
|
||||
#include "MQTTPacket.h"
|
||||
#include "StackTrace.h"
|
||||
|
||||
#include <string.h>
|
||||
|
||||
/**
|
||||
* Determines the length of the MQTT unsubscribe packet that would be produced using the supplied parameters
|
||||
* @param count the number of topic filter strings in topicFilters
|
||||
* @param topicFilters the array of topic filter strings to be used in the publish
|
||||
* @return the length of buffer needed to contain the serialized version of the packet
|
||||
*/
|
||||
int MQTTSerialize_unsubscribeLength(int count, MQTTString topicFilters[])
|
||||
{
|
||||
int i;
|
||||
int len = 2; /* packetid */
|
||||
|
||||
for (i = 0; i < count; ++i)
|
||||
len += 2 + MQTTstrlen(topicFilters[i]); /* length + topic*/
|
||||
return len;
|
||||
}
|
||||
|
||||
|
||||
/**
|
||||
* Serializes the supplied unsubscribe data into the supplied buffer, ready for sending
|
||||
* @param buf the raw buffer data, of the correct length determined by the remaining length field
|
||||
* @param buflen the length in bytes of the data in the supplied buffer
|
||||
* @param dup integer - the MQTT dup flag
|
||||
* @param packetid integer - the MQTT packet identifier
|
||||
* @param count - number of members in the topicFilters array
|
||||
* @param topicFilters - array of topic filter names
|
||||
* @return the length of the serialized data. <= 0 indicates error
|
||||
*/
|
||||
int MQTTSerialize_unsubscribe(unsigned char* buf, int buflen, unsigned char dup, unsigned short packetid,
|
||||
int count, MQTTString topicFilters[])
|
||||
{
|
||||
unsigned char *ptr = buf;
|
||||
MQTTHeader header = {0};
|
||||
int rem_len = 0;
|
||||
int rc = -1;
|
||||
int i = 0;
|
||||
|
||||
FUNC_ENTRY;
|
||||
if (MQTTPacket_len(rem_len = MQTTSerialize_unsubscribeLength(count, topicFilters)) > buflen)
|
||||
{
|
||||
rc = MQTTPACKET_BUFFER_TOO_SHORT;
|
||||
goto exit;
|
||||
}
|
||||
|
||||
header.byte = 0;
|
||||
header.bits.type = UNSUBSCRIBE;
|
||||
header.bits.dup = dup;
|
||||
header.bits.qos = 1;
|
||||
writeChar(&ptr, header.byte); /* write header */
|
||||
|
||||
ptr += MQTTPacket_encode(ptr, rem_len); /* write remaining length */;
|
||||
|
||||
writeInt(&ptr, packetid);
|
||||
|
||||
for (i = 0; i < count; ++i)
|
||||
writeMQTTString(&ptr, topicFilters[i]);
|
||||
|
||||
rc = ptr - buf;
|
||||
exit:
|
||||
FUNC_EXIT_RC(rc);
|
||||
return rc;
|
||||
}
|
||||
|
||||
|
||||
/**
|
||||
* Deserializes the supplied (wire) buffer into unsuback data
|
||||
* @param packetid returned integer - the MQTT packet identifier
|
||||
* @param buf the raw buffer data, of the correct length determined by the remaining length field
|
||||
* @param buflen the length in bytes of the data in the supplied buffer
|
||||
* @return error code. 1 is success, 0 is failure
|
||||
*/
|
||||
int MQTTDeserialize_unsuback(unsigned short* packetid, unsigned char* buf, int buflen)
|
||||
{
|
||||
unsigned char type = 0;
|
||||
unsigned char dup = 0;
|
||||
int rc = 0;
|
||||
|
||||
FUNC_ENTRY;
|
||||
rc = MQTTDeserialize_ack(&type, &dup, packetid, buf, buflen);
|
||||
if (type == UNSUBACK)
|
||||
rc = 1;
|
||||
FUNC_EXIT_RC(rc);
|
||||
return rc;
|
||||
}
|
||||
|
||||
|
||||
77
extras/paho_mqtt_c/StackTrace.h
Normal file
77
extras/paho_mqtt_c/StackTrace.h
Normal file
|
|
@ -0,0 +1,77 @@
|
|||
/*******************************************************************************
|
||||
* Copyright (c) 2014 IBM Corp.
|
||||
*
|
||||
* All rights reserved. This program and the accompanying materials
|
||||
* are made available under the terms of the Eclipse Public License v1.0
|
||||
* and Eclipse Distribution License v1.0 which accompany this distribution.
|
||||
*
|
||||
* The Eclipse Public License is available at
|
||||
* http://www.eclipse.org/legal/epl-v10.html
|
||||
* and the Eclipse Distribution License is available at
|
||||
* http://www.eclipse.org/org/documents/edl-v10.php.
|
||||
*
|
||||
* Contributors:
|
||||
* Ian Craggs - initial API and implementation and/or initial documentation
|
||||
* Ian Craggs - fix for bug #434081
|
||||
*******************************************************************************/
|
||||
|
||||
#ifndef STACKTRACE_H_
|
||||
#define STACKTRACE_H_
|
||||
|
||||
#define NOSTACKTRACE 1
|
||||
|
||||
#if defined(NOSTACKTRACE)
|
||||
#define FUNC_ENTRY
|
||||
#define FUNC_ENTRY_NOLOG
|
||||
#define FUNC_ENTRY_MED
|
||||
#define FUNC_ENTRY_MAX
|
||||
#define FUNC_EXIT
|
||||
#define FUNC_EXIT_NOLOG
|
||||
#define FUNC_EXIT_MED
|
||||
#define FUNC_EXIT_MAX
|
||||
#define FUNC_EXIT_RC(x)
|
||||
#define FUNC_EXIT_MED_RC(x)
|
||||
#define FUNC_EXIT_MAX_RC(x)
|
||||
|
||||
#else
|
||||
|
||||
#if defined(WIN32)
|
||||
#define inline __inline
|
||||
#define FUNC_ENTRY StackTrace_entry(__FUNCTION__, __LINE__, TRACE_MINIMUM)
|
||||
#define FUNC_ENTRY_NOLOG StackTrace_entry(__FUNCTION__, __LINE__, -1)
|
||||
#define FUNC_ENTRY_MED StackTrace_entry(__FUNCTION__, __LINE__, TRACE_MEDIUM)
|
||||
#define FUNC_ENTRY_MAX StackTrace_entry(__FUNCTION__, __LINE__, TRACE_MAXIMUM)
|
||||
#define FUNC_EXIT StackTrace_exit(__FUNCTION__, __LINE__, NULL, TRACE_MINIMUM)
|
||||
#define FUNC_EXIT_NOLOG StackTrace_exit(__FUNCTION__, __LINE__, -1)
|
||||
#define FUNC_EXIT_MED StackTrace_exit(__FUNCTION__, __LINE__, NULL, TRACE_MEDIUM)
|
||||
#define FUNC_EXIT_MAX StackTrace_exit(__FUNCTION__, __LINE__, NULL, TRACE_MAXIMUM)
|
||||
#define FUNC_EXIT_RC(x) StackTrace_exit(__FUNCTION__, __LINE__, &x, TRACE_MINIMUM)
|
||||
#define FUNC_EXIT_MED_RC(x) StackTrace_exit(__FUNCTION__, __LINE__, &x, TRACE_MEDIUM)
|
||||
#define FUNC_EXIT_MAX_RC(x) StackTrace_exit(__FUNCTION__, __LINE__, &x, TRACE_MAXIMUM)
|
||||
#else
|
||||
#define FUNC_ENTRY StackTrace_entry(__func__, __LINE__, TRACE_MINIMUM)
|
||||
#define FUNC_ENTRY_NOLOG StackTrace_entry(__func__, __LINE__, -1)
|
||||
#define FUNC_ENTRY_MED StackTrace_entry(__func__, __LINE__, TRACE_MEDIUM)
|
||||
#define FUNC_ENTRY_MAX StackTrace_entry(__func__, __LINE__, TRACE_MAXIMUM)
|
||||
#define FUNC_EXIT StackTrace_exit(__func__, __LINE__, NULL, TRACE_MINIMUM)
|
||||
#define FUNC_EXIT_NOLOG StackTrace_exit(__func__, __LINE__, NULL, -1)
|
||||
#define FUNC_EXIT_MED StackTrace_exit(__func__, __LINE__, NULL, TRACE_MEDIUM)
|
||||
#define FUNC_EXIT_MAX StackTrace_exit(__func__, __LINE__, NULL, TRACE_MAXIMUM)
|
||||
#define FUNC_EXIT_RC(x) StackTrace_exit(__func__, __LINE__, &x, TRACE_MINIMUM)
|
||||
#define FUNC_EXIT_MED_RC(x) StackTrace_exit(__func__, __LINE__, &x, TRACE_MEDIUM)
|
||||
#define FUNC_EXIT_MAX_RC(x) StackTrace_exit(__func__, __LINE__, &x, TRACE_MAXIMUM)
|
||||
|
||||
void StackTrace_entry(const char* name, int line, int trace);
|
||||
void StackTrace_exit(const char* name, int line, void* return_value, int trace);
|
||||
|
||||
void StackTrace_printStack(FILE* dest);
|
||||
char* StackTrace_get(unsigned long);
|
||||
|
||||
#endif
|
||||
|
||||
#endif
|
||||
|
||||
|
||||
|
||||
|
||||
#endif /* STACKTRACE_H_ */
|
||||
9
extras/paho_mqtt_c/component.mk
Normal file
9
extras/paho_mqtt_c/component.mk
Normal file
|
|
@ -0,0 +1,9 @@
|
|||
# Component makefile for extras/paho_mqtt_c
|
||||
|
||||
# expected anyone using bmp driver includes it as 'paho_mqtt_c/MQTT*.h'
|
||||
INC_DIRS += $(paho_mqtt_c_ROOT)..
|
||||
|
||||
# args for passing into compile rule generation
|
||||
paho_mqtt_c_SRC_DIR = $(paho_mqtt_c_ROOT)
|
||||
|
||||
$(eval $(call component_compile_rules,paho_mqtt_c))
|
||||
Loading…
Reference in a new issue