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5a931e2fa3
On branch SSL Changes to be committed: modified: include/mqtt.h modified: mqtt.c Implemented support for SSL/TLS. Uses config setting "CONFIG_MQTT_SECURITY_ON" to enable this feature. Breaking changes on client_connect() interface to support SSL, but shouldnt be an issue as this is an internal interface
99 lines
2.4 KiB
C
Executable File
99 lines
2.4 KiB
C
Executable File
#ifndef _MQTT_H_
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#define _MQTT_H_
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#include <stdint.h>
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#include <string.h>
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#include "mqtt_config.h"
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#include "mqtt_msg.h"
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#include "ringbuf.h"
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#if defined(CONFIG_MQTT_SECURITY_ON) // ENABLE MQTT OVER SSL
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#include "openssl/ssl.h"
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#define ClientRead(buf,num) SSL_read(client->ssl, buf, num)
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#define ClientWrite(buf,num) SSL_write(client->ssl, buf, num)
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#else
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#define ClientRead(buf,num) read(client->socket, buf, num)
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#define ClientWrite(buf,num) write(client->socket, buf, num)
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#endif
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typedef void (* mqtt_callback)(void *, void *);
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typedef struct {
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mqtt_callback connected_cb;
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mqtt_callback disconnected_cb;
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mqtt_callback reconnect_cb;
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mqtt_callback subscribe_cb;
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mqtt_callback publish_cb;
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mqtt_callback data_cb;
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char host[CONFIG_MQTT_MAX_HOST_LEN];
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uint32_t port;
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char client_id[CONFIG_MQTT_MAX_CLIENT_LEN];
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char username[CONFIG_MQTT_MAX_USERNAME_LEN];
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char password[CONFIG_MQTT_MAX_PASSWORD_LEN];
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char lwt_topic[CONFIG_MQTT_MAX_LWT_TOPIC];
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char lwt_msg[CONFIG_MQTT_MAX_LWT_MSG];
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uint32_t lwt_qos;
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uint32_t lwt_retain;
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uint32_t clean_session;
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uint32_t keepalive;
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} mqtt_settings;
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typedef struct mqtt_event_data_t
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{
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uint8_t type;
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const char* topic;
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const char* data;
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uint16_t topic_length;
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uint16_t data_length;
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uint16_t data_offset;
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uint16_t data_total_length;
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} mqtt_event_data_t;
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typedef struct mqtt_state_t
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{
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uint16_t port;
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int auto_reconnect;
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mqtt_connect_info_t* connect_info;
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uint8_t* in_buffer;
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uint8_t* out_buffer;
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int in_buffer_length;
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int out_buffer_length;
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uint16_t message_length;
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uint16_t message_length_read;
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mqtt_message_t* outbound_message;
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mqtt_connection_t mqtt_connection;
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uint16_t pending_msg_id;
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int pending_msg_type;
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int pending_publish_qos;
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} mqtt_state_t;
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typedef struct {
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int socket;
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#if defined(CONFIG_MQTT_SECURITY_ON) // ENABLE MQTT OVER SSL
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SSL_CTX *ctx;
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SSL *ssl;
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#endif
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mqtt_settings *settings;
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mqtt_state_t mqtt_state;
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mqtt_connect_info_t connect_info;
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QueueHandle_t xSendingQueue;
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RINGBUF send_rb;
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uint32_t keepalive_tick;
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} mqtt_client;
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mqtt_client *mqtt_start(mqtt_settings *mqtt_info);
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void mqtt_stop();
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void mqtt_task(void *pvParameters);
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void mqtt_subscribe(mqtt_client *client, char *topic, uint8_t qos);
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void mqtt_publish(mqtt_client* client, char *topic, char *data, int len, int qos, int retain);
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void mqtt_detroy();
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#endif
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