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1.新增esp-idf设备端sdk

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zhuangpeng.li
2024-08-05 15:46:10 +08:00
parent 642cf21648
commit 7983f72429
425 changed files with 113377 additions and 0 deletions
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98
sdk/ESP-IDF/esp_fastbee_aliyun/esp-aliyun/iotkit-embedded/mqtt/MQTTDeserializePublish.c Normal file
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/*
* Copyright (C) 2015-2018 Alibaba Group Holding Limited
*/
#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;
header.byte = readChar(&curdata);
if (MQTT_HEADER_GET_TYPE(header.byte) != PUBLISH) {
goto exit;
}
*dup = MQTT_HEADER_GET_DUP(header.byte);
*qos = MQTT_HEADER_GET_QOS(header.byte);
*retained = MQTT_HEADER_GET_RETAIN(header.byte);
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:
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;
header.byte = readChar(&curdata);
*dup = MQTT_HEADER_GET_DUP(header.byte);
*packettype = MQTT_HEADER_GET_TYPE(header.byte);
curdata += (rc = MQTTPacket_decodeBuf(curdata, &mylen)); /* read remaining length */
enddata = curdata + mylen;
if (enddata - curdata < 2) {
goto exit;
}
*packetid = readInt(&curdata);
rc = 1;
exit:
return rc;
}