2023_open_source_contest_preliminary_1st_issue2 from Huang_Chen

it is OK
This commit is contained in:
IACU 2023-10-23 14:20:51 +08:00
commit a883474327
39 changed files with 3400 additions and 1 deletions

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@ -24,7 +24,7 @@ endif
ifeq ($(CONFIG_ADD_XIZI_FEATURES),y)
SRC_FILES := test_shell.c
ifeq ($(CONFIG_USER_TEST_ADC),y)
SRC_FILES += test_adc.c
endif
@ -130,6 +130,7 @@ ifeq ($(CONFIG_ADD_XIZI_FEATURES),y)
endif
ifeq ($(CONFIG_USER_TEST_MQTTCLIENT),y)
SRC_DIR:= test_mqttclient
SRC_FILES +=
endif

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SRC_FILES += test_mqttclient.c
SRC_DIR += mqtt
include $(KERNEL_ROOT)/compiler.mk

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## 1. 简介
本代码实现了MQTT对服务器订阅主体并发送信息功能
## 2. 数据结构设计说明
### 2.1 MQTT数据结构定义
![image-20231007142702891](./imgs/图片4.png)
### 2.2 数据解析与加密
![image-20231007143235579](./imgs/图片5.png)
### 2.3 MQTT连接与订阅
![image-20231007143448685](./imgs/图片6.png)
![image-20231007143607579](./imgs/图片7.png)
## 3. 测试程序说明
MQTT基于TCP/IP协议分为客户端与服务端。在本任务中ARM终端作为客户端与服务端连接并进行主题订阅。
以下代码设置了进行订阅时需要的Client ID、用户名、密码及订阅主题。
![image-20231007144555989](./imgs/图片8.png)
客户端首先需要根据以上信息向服务端发起连接请求,验证用户名及密码
![image-20231007144710185](./imgs/图片9.png)
随后进行主题订阅,接收服务端发布的消息
![image-20231007144823940](./imgs/图片10.png)
在订阅过程中需要对获取的信息进行读取同时每隔一段时间向服务端发送保持活性ping请求以维持与服务端的连接
![image-20231007144921430](./imgs/图片11.png)
## 4. 测试流程
测试流程为:
首先执行setip命令设置设备ip地址
![图片2](./imgs/图片2.png)
随后执行“MqttSocketRecvTest 服务器ip”命令订阅主题然后在服务器端发布消息如图所示
![图片1](./imgs/pic1.png)
最终设备端接收到信息
![图片3](./imgs/pic2.png)

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/*******************************************************************************
* Copyright (c) 2014, 2017 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
* Ian Craggs - fix for issue #64, bit order in connack response
*******************************************************************************/
#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 reserved : 7; /**< unused */
unsigned int sessionpresent : 1; /**< session present flag */
} bits;
#else
struct
{
unsigned int sessionpresent : 1; /**< session present flag */
unsigned int reserved: 7; /**< unused */
} 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_ */

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/*******************************************************************************
* 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 "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);
}

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/*******************************************************************************
* 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 "StackTrace.h"
#include "MQTTPacket.h"
#include <string.h>
#define min(a, b) ((a < b) ? a : b)
/**
* Validates MQTT protocol name and version combinations
* @param protocol the MQTT protocol name as an MQTTString
* @param version the MQTT protocol version number, as in the connect packet
* @return correct MQTT combination? 1 is true, 0 is false
*/
int MQTTPacket_checkVersion(MQTTString* protocol, int version)
{
int rc = 0;
if (version == 3 && memcmp(protocol->lenstring.data, "MQIsdp",
min(6, protocol->lenstring.len)) == 0)
rc = 1;
else if (version == 4 && memcmp(protocol->lenstring.data, "MQTT",
min(4, protocol->lenstring.len)) == 0)
rc = 1;
return rc;
}
/**
* Deserializes the supplied (wire) buffer into connect data structure
* @param data the connect data structure to be filled out
* @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_connect(MQTTPacket_connectData* data, unsigned char* buf, int len)
{
MQTTHeader header = {0};
MQTTConnectFlags flags = {0};
unsigned char* curdata = buf;
unsigned char* enddata = &buf[len];
int rc = 0;
MQTTString Protocol;
int version;
int mylen = 0;
FUNC_ENTRY;
header.byte = readChar(&curdata);
if (header.bits.type != CONNECT)
goto exit;
curdata += MQTTPacket_decodeBuf(curdata, &mylen); /* read remaining length */
if (!readMQTTLenString(&Protocol, &curdata, enddata) ||
enddata - curdata < 0) /* do we have enough data to read the protocol version byte? */
goto exit;
version = (int)readChar(&curdata); /* Protocol version */
/* If we don't recognize the protocol version, we don't parse the connect packet on the
* basis that we don't know what the format will be.
*/
if (MQTTPacket_checkVersion(&Protocol, version))
{
flags.all = readChar(&curdata);
data->cleansession = flags.bits.cleansession;
data->keepAliveInterval = readInt(&curdata);
if (!readMQTTLenString(&data->clientID, &curdata, enddata))
goto exit;
data->willFlag = flags.bits.will;
if (flags.bits.will)
{
data->will.qos = flags.bits.willQoS;
data->will.retained = flags.bits.willRetain;
if (!readMQTTLenString(&data->will.topicName, &curdata, enddata) ||
!readMQTTLenString(&data->will.message, &curdata, enddata))
goto exit;
}
if (flags.bits.username)
{
if (enddata - curdata < 3 || !readMQTTLenString(&data->username, &curdata, enddata))
goto exit; /* username flag set, but no username supplied - invalid */
if (flags.bits.password &&
(enddata - curdata < 3 || !readMQTTLenString(&data->password, &curdata, enddata)))
goto exit; /* password flag set, but no password supplied - invalid */
}
else if (flags.bits.password)
goto exit; /* password flag set without username - invalid */
rc = 1;
}
exit:
FUNC_EXIT_RC(rc);
return rc;
}
/**
* Serializes the connack 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 connack_rc the integer connack return code to be used
* @param sessionPresent the MQTT 3.1.1 sessionPresent flag
* @return serialized length, or error if 0
*/
int MQTTSerialize_connack(unsigned char* buf, int buflen, unsigned char connack_rc, unsigned char sessionPresent)
{
MQTTHeader header = {0};
int rc = 0;
unsigned char *ptr = buf;
MQTTConnackFlags flags = {0};
FUNC_ENTRY;
if (buflen < 2)
{
rc = MQTTPACKET_BUFFER_TOO_SHORT;
goto exit;
}
header.byte = 0;
header.bits.type = CONNACK;
writeChar(&ptr, header.byte); /* write header */
ptr += MQTTPacket_encode(ptr, 2); /* write remaining length */
flags.all = 0;
flags.bits.sessionpresent = sessionPresent;
writeChar(&ptr, flags.all);
writeChar(&ptr, connack_rc);
rc = ptr - buf;
exit:
FUNC_EXIT_RC(rc);
return rc;
}

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/*******************************************************************************
* 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 "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, int32_t* 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;
}

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@ -0,0 +1,262 @@
/*******************************************************************************
* 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 "StackTrace.h"
#include "MQTTPacket.h"
#include <string.h>
const char* MQTTPacket_names[] =
{
"RESERVED", "CONNECT", "CONNACK", "PUBLISH", "PUBACK", "PUBREC", "PUBREL",
"PUBCOMP", "SUBSCRIBE", "SUBACK", "UNSUBSCRIBE", "UNSUBACK",
"PINGREQ", "PINGRESP", "DISCONNECT"
};
const char* MQTTPacket_getName(unsigned short packetid)
{
return MQTTPacket_names[packetid];
}
int MQTTStringFormat_connect(char* strbuf, int strbuflen, MQTTPacket_connectData* data)
{
int strindex = 0;
strindex = snprintf(strbuf, strbuflen,
"CONNECT MQTT version %d, client id %.*s, clean session %d, keep alive %d",
(int)data->MQTTVersion, data->clientID.lenstring.len, data->clientID.lenstring.data,
(int)data->cleansession, data->keepAliveInterval);
if (data->willFlag)
strindex += snprintf(&strbuf[strindex], strbuflen - strindex,
", will QoS %d, will retain %d, will topic %.*s, will message %.*s",
data->will.qos, data->will.retained,
data->will.topicName.lenstring.len, data->will.topicName.lenstring.data,
data->will.message.lenstring.len, data->will.message.lenstring.data);
if (data->username.lenstring.data && data->username.lenstring.len > 0)
strindex += snprintf(&strbuf[strindex], strbuflen - strindex,
", user name %.*s", data->username.lenstring.len, data->username.lenstring.data);
if (data->password.lenstring.data && data->password.lenstring.len > 0)
strindex += snprintf(&strbuf[strindex], strbuflen - strindex,
", password %.*s", data->password.lenstring.len, data->password.lenstring.data);
return strindex;
}
int MQTTStringFormat_connack(char* strbuf, int strbuflen, unsigned char connack_rc, unsigned char sessionPresent)
{
int strindex = snprintf(strbuf, strbuflen, "CONNACK session present %d, rc %d", sessionPresent, connack_rc);
return strindex;
}
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 strindex = snprintf(strbuf, strbuflen,
"PUBLISH dup %d, QoS %d, retained %d, packet id %d, topic %.*s, payload length %d, payload %.*s",
dup, qos, retained, packetid,
(topicName.lenstring.len < 20) ? topicName.lenstring.len : 20, topicName.lenstring.data,
payloadlen, (payloadlen < 20) ? payloadlen : 20, payload);
return strindex;
}
int MQTTStringFormat_ack(char* strbuf, int strbuflen, unsigned char packettype, unsigned char dup, unsigned short packetid)
{
int strindex = snprintf(strbuf, strbuflen, "%s, packet id %d", MQTTPacket_names[packettype], packetid);
if (dup)
strindex += snprintf(strbuf + strindex, strbuflen - strindex, ", dup %d", dup);
return strindex;
}
int MQTTStringFormat_subscribe(char* strbuf, int strbuflen, unsigned char dup, unsigned short packetid, int count,
MQTTString topicFilters[], int requestedQoSs[])
{
return snprintf(strbuf, strbuflen,
"SUBSCRIBE dup %d, packet id %d count %d topic %.*s qos %d",
dup, packetid, count,
topicFilters[0].lenstring.len, topicFilters[0].lenstring.data,
requestedQoSs[0]);
}
int MQTTStringFormat_suback(char* strbuf, int strbuflen, unsigned short packetid, int count, int* grantedQoSs)
{
return snprintf(strbuf, strbuflen,
"SUBACK packet id %d count %d granted qos %d", packetid, count, grantedQoSs[0]);
}
int MQTTStringFormat_unsubscribe(char* strbuf, int strbuflen, unsigned char dup, unsigned short packetid,
int count, MQTTString topicFilters[])
{
return snprintf(strbuf, strbuflen,
"UNSUBSCRIBE dup %d, packet id %d count %d topic %.*s",
dup, packetid, count,
topicFilters[0].lenstring.len, topicFilters[0].lenstring.data);
}
#if defined(MQTT_CLIENT)
char* MQTTFormat_toClientString(char* strbuf, int strbuflen, unsigned char* buf, int buflen)
{
int index = 0;
int rem_length = 0;
MQTTHeader header = {0};
int strindex = 0;
header.byte = buf[index++];
index += MQTTPacket_decodeBuf(&buf[index], &rem_length);
switch (header.bits.type)
{
case CONNACK:
{
unsigned char sessionPresent, connack_rc;
if (MQTTDeserialize_connack(&sessionPresent, &connack_rc, buf, buflen) == 1)
strindex = MQTTStringFormat_connack(strbuf, strbuflen, connack_rc, sessionPresent);
}
break;
case PUBLISH:
{
unsigned char dup, retained, *payload;
unsigned short packetid;
int qos, payloadlen;
MQTTString topicName = MQTTString_initializer;
if (MQTTDeserialize_publish(&dup, &qos, &retained, &packetid, &topicName,
&payload, &payloadlen, buf, buflen) == 1)
strindex = MQTTStringFormat_publish(strbuf, strbuflen, dup, qos, retained, packetid,
topicName, payload, payloadlen);
}
break;
case PUBACK:
case PUBREC:
case PUBREL:
case PUBCOMP:
{
unsigned char packettype, dup;
unsigned short packetid;
if (MQTTDeserialize_ack(&packettype, &dup, &packetid, buf, buflen) == 1)
strindex = MQTTStringFormat_ack(strbuf, strbuflen, packettype, dup, packetid);
}
break;
case SUBACK:
{
unsigned short packetid;
int maxcount = 1, count = 0;
int grantedQoSs[1];
if (MQTTDeserialize_suback(&packetid, maxcount, &count, grantedQoSs, buf, buflen) == 1)
strindex = MQTTStringFormat_suback(strbuf, strbuflen, packetid, count, grantedQoSs);
}
break;
case UNSUBACK:
{
unsigned short packetid;
if (MQTTDeserialize_unsuback(&packetid, buf, buflen) == 1)
strindex = MQTTStringFormat_ack(strbuf, strbuflen, UNSUBACK, 0, packetid);
}
break;
case PINGREQ:
case PINGRESP:
case DISCONNECT:
strindex = snprintf(strbuf, strbuflen, "%s", MQTTPacket_names[header.bits.type]);
break;
}
return strbuf;
}
#endif
#if defined(MQTT_SERVER)
char* MQTTFormat_toServerString(char* strbuf, int strbuflen, unsigned char* buf, int buflen)
{
int index = 0;
int rem_length = 0;
MQTTHeader header = {0};
int strindex = 0;
header.byte = buf[index++];
index += MQTTPacket_decodeBuf(&buf[index], &rem_length);
switch (header.bits.type)
{
case CONNECT:
{
MQTTPacket_connectData data;
int rc;
if ((rc = MQTTDeserialize_connect(&data, buf, buflen)) == 1)
strindex = MQTTStringFormat_connect(strbuf, strbuflen, &data);
}
break;
case PUBLISH:
{
unsigned char dup, retained, *payload;
unsigned short packetid;
int qos, payloadlen;
MQTTString topicName = MQTTString_initializer;
if (MQTTDeserialize_publish(&dup, &qos, &retained, &packetid, &topicName,
&payload, &payloadlen, buf, buflen) == 1)
strindex = MQTTStringFormat_publish(strbuf, strbuflen, dup, qos, retained, packetid,
topicName, payload, payloadlen);
}
break;
case PUBACK:
case PUBREC:
case PUBREL:
case PUBCOMP:
{
unsigned char packettype, dup;
unsigned short packetid;
if (MQTTDeserialize_ack(&packettype, &dup, &packetid, buf, buflen) == 1)
strindex = MQTTStringFormat_ack(strbuf, strbuflen, packettype, dup, packetid);
}
break;
case SUBSCRIBE:
{
unsigned char dup;
unsigned short packetid;
int maxcount = 1, count = 0;
MQTTString topicFilters[1];
int requestedQoSs[1];
if (MQTTDeserialize_subscribe(&dup, &packetid, maxcount, &count,
topicFilters, requestedQoSs, buf, buflen) == 1)
strindex = MQTTStringFormat_subscribe(strbuf, strbuflen, dup, packetid, count, topicFilters, requestedQoSs);;
}
break;
case UNSUBSCRIBE:
{
unsigned char dup;
unsigned short packetid;
int maxcount = 1, count = 0;
MQTTString topicFilters[1];
if (MQTTDeserialize_unsubscribe(&dup, &packetid, maxcount, &count, topicFilters, buf, buflen) == 1)
strindex = MQTTStringFormat_unsubscribe(strbuf, strbuflen, dup, packetid, count, topicFilters);
}
break;
case PINGREQ:
case PINGRESP:
case DISCONNECT:
strindex = snprintf(strbuf, strbuflen, "%s", MQTTPacket_names[header.bits.type]);
break;
}
strbuf[strbuflen] = '\0';
return strbuf;
}
#endif

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/*******************************************************************************
* 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

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/*******************************************************************************
* 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 "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 (rem_len && ((*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->len);
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:
if(trp->rem_len){
/* 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;
}

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/*******************************************************************************
* 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
*******************************************************************************/
#include <stdint.h>
#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"
DLLExport int MQTTSerialize_ack(unsigned char* buf, int buflen, unsigned char type, unsigned char dup, unsigned short packetid);
DLLExport int MQTTDeserialize_ack(unsigned char* packettype, unsigned char* dup, unsigned short* packetid, unsigned char* buf, int buflen);
int MQTTPacket_len(int rem_len);
DLLExport int MQTTPacket_equals(MQTTString* a, char* b);
DLLExport 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_ */

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/*******************************************************************************
* 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, int32_t* 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_ */

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/*******************************************************************************
* 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 "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);
}

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/*******************************************************************************
* 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[], int32_t 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, int32_t* count, int32_t grantedQoSs[], unsigned char* buf, int len);
#endif /* MQTTSUBSCRIBE_H_ */

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/*******************************************************************************
* 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 "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[], int32_t 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, int32_t* count, int32_t 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;
}

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/*******************************************************************************
* 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 "MQTTPacket.h"
#include "StackTrace.h"
#include <string.h>
/**
* Deserializes the supplied (wire) buffer into subscribe data
* @param dup integer returned - the MQTT dup flag
* @param packetid integer returned - the MQTT packet identifier
* @param maxcount - the maximum number of members allowed in the topicFilters and requestedQoSs arrays
* @param count - number of members in the topicFilters and requestedQoSs arrays
* @param topicFilters - array of topic filter names
* @param requestedQoSs - array of requested QoS
* @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 the length of the serialized data. <= 0 indicates error
*/
int MQTTDeserialize_subscribe(unsigned char* dup, unsigned short* packetid, int maxcount, int* count, MQTTString topicFilters[],
int requestedQoSs[], unsigned char* buf, int buflen)
{
MQTTHeader header = {0};
unsigned char* curdata = buf;
unsigned char* enddata = NULL;
int rc = -1;
int mylen = 0;
FUNC_ENTRY;
header.byte = readChar(&curdata);
if (header.bits.type != SUBSCRIBE)
goto exit;
*dup = header.bits.dup;
curdata += (rc = MQTTPacket_decodeBuf(curdata, &mylen)); /* read remaining length */
enddata = curdata + mylen;
*packetid = readInt(&curdata);
*count = 0;
while (curdata < enddata)
{
if (!readMQTTLenString(&topicFilters[*count], &curdata, enddata))
goto exit;
if (curdata >= enddata) /* do we have enough data to read the req_qos version byte? */
goto exit;
requestedQoSs[*count] = readChar(&curdata);
(*count)++;
}
rc = 1;
exit:
FUNC_EXIT_RC(rc);
return rc;
}
/**
* Serializes the supplied suback 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 packetid integer - the MQTT packet identifier
* @param count - number of members in the grantedQoSs array
* @param grantedQoSs - array of granted QoS
* @return the length of the serialized data. <= 0 indicates error
*/
int MQTTSerialize_suback(unsigned char* buf, int buflen, unsigned short packetid, int count, int* grantedQoSs)
{
MQTTHeader header = {0};
int rc = -1;
unsigned char *ptr = buf;
int i;
FUNC_ENTRY;
if (buflen < 2 + count)
{
rc = MQTTPACKET_BUFFER_TOO_SHORT;
goto exit;
}
header.byte = 0;
header.bits.type = SUBACK;
writeChar(&ptr, header.byte); /* write header */
ptr += MQTTPacket_encode(ptr, 2 + count); /* write remaining length */
writeInt(&ptr, packetid);
for (i = 0; i < count; ++i)
writeChar(&ptr, grantedQoSs[i]);
rc = ptr - buf;
exit:
FUNC_EXIT_RC(rc);
return rc;
}

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/*******************************************************************************
* 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_ */

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/*******************************************************************************
* 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 "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;
}

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/*******************************************************************************
* 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 "MQTTPacket.h"
#include "StackTrace.h"
#include <string.h>
/**
* Deserializes the supplied (wire) buffer into unsubscribe data
* @param dup integer returned - the MQTT dup flag
* @param packetid integer returned - the MQTT packet identifier
* @param maxcount - the maximum number of members allowed in the topicFilters and requestedQoSs arrays
* @param count - number of members in the topicFilters and requestedQoSs arrays
* @param topicFilters - array of topic filter names
* @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 the length of the serialized data. <= 0 indicates error
*/
int MQTTDeserialize_unsubscribe(unsigned char* dup, unsigned short* packetid, int maxcount, int* count, MQTTString topicFilters[],
unsigned char* buf, int len)
{
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 != UNSUBSCRIBE)
goto exit;
*dup = header.bits.dup;
curdata += (rc = MQTTPacket_decodeBuf(curdata, &mylen)); /* read remaining length */
enddata = curdata + mylen;
*packetid = readInt(&curdata);
*count = 0;
while (curdata < enddata)
{
if (!readMQTTLenString(&topicFilters[*count], &curdata, enddata))
goto exit;
(*count)++;
}
rc = 1;
exit:
FUNC_EXIT_RC(rc);
return rc;
}
/**
* Serializes the supplied unsuback 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 packetid integer - the MQTT packet identifier
* @return the length of the serialized data. <= 0 indicates error
*/
int MQTTSerialize_unsuback(unsigned char* buf, int buflen, unsigned short packetid)
{
MQTTHeader header = {0};
int rc = 0;
unsigned char *ptr = buf;
FUNC_ENTRY;
if (buflen < 2)
{
rc = MQTTPACKET_BUFFER_TOO_SHORT;
goto exit;
}
header.byte = 0;
header.bits.type = UNSUBACK;
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;
}

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SRC_FILES +=MQTTPacket.c\
MQTTConnectClient.c \
MQTTConnectServer.c \
MQTTDeserializePublish.c \
MQTTFormat.c \
MQTTSerializePublish.c \
MQTTSubscribeClient.c \
MQTTSubscribeServer.c \
MQTTUnsubscribeClient.c \
MQTTUnsubscribeServer.c \
transport.c
include $(KERNEL_ROOT)/compiler.mk

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/*******************************************************************************
* 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_
#include <stdio.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_ */

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@ -0,0 +1,59 @@
/*
* Copyright (c) 2022 AIIT XUOS Lab
* XiUOS is licensed under Mulan PSL v2.
* You can use this software according to the terms and conditions of the Mulan PSL v2.
* You may obtain a copy of Mulan PSL v2 at:
* http://license.coscl.org.cn/MulanPSL2
* THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
* EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
* MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
* See the Mulan PSL v2 for more details.
*/
/**
* @file transport.c
* @brief mqtt transport function
* @version 3.0
* @author AIIT XUOS Lab
* @date 2023.8.10
*/
#include "transport.h"
#include "lwip/opt.h"
#include "lwip/arch.h"
#include "lwip/api.h"
#include "lwip/inet.h"
#include "lwip/sockets.h"
#include "string.h"
static int mysock;
int32_t transport_sendPacketBuffer( uint8_t* buf, int32_t buflen)
{
int32_t rc;
rc = write(mysock, buf, buflen);
return rc;
}
int transport_getdata(unsigned char* buf, int count)
{
int32_t rc;
rc = recv(mysock, buf, count, 0);
lw_print("get data : %lx\n",rc);
return rc;
}
int32_t transport_close(void)
{
int rc;
// rc = close(mysock);
rc = shutdown(mysock, SHUT_WR);
rc = recv(mysock, NULL, (size_t)0, 0);
rc = close(mysock);
return rc;
}

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/*
* Copyright (c) 2022 AIIT XUOS Lab
* XiUOS is licensed under Mulan PSL v2.
* You can use this software according to the terms and conditions of the Mulan PSL v2.
* You may obtain a copy of Mulan PSL v2 at:
* http://license.coscl.org.cn/MulanPSL2
* THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
* EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
* MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
* See the Mulan PSL v2 for more details.
*/
/**
* @file transport.h
* @brief mqtt transport function
* @version 3.0
* @author AIIT XUOS Lab
* @date 2023.8.10
*/
#ifndef __TRANSPORT_H
#define __TRANSPORT_H
#include <stdint.h>
int32_t transport_sendPacketBuffer( uint8_t* buf, int32_t buflen);
int transport_getdata(unsigned char* buf, int count);
int32_t transport_open(int8_t* servip, int32_t port);
int32_t transport_close(void);
#endif

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/*
* Copyright (c) 2022 AIIT XUOS Lab
* XiUOS is licensed under Mulan PSL v2.
* You can use this software according to the terms and conditions of the Mulan PSL v2.
* You may obtain a copy of Mulan PSL v2 at:
* http://license.coscl.org.cn/MulanPSL2
* THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
* EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
* MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
* See the Mulan PSL v2 for more details.
*/
/**
* @file test_mqttclient.c
* @brief mqtt subscribe fuction test
* @version 3.0
* @author AIIT XUOS Lab
* @date 2023.8.10
*/
#include <transform.h>
#include "test_mqttclient.h"
#include <stdio.h>
#ifdef ADD_XIZI_FEATURES
#include <sys_arch.h>
#include <lwip/sockets.h>
#include "lwip/sys.h"
#include "lwip/api.h"
#include "mqtt/MQTTPacket.h"
#include "mqtt/MQTTSubscribe.h"
#include "mqtt/transport.h"
#include <cJSON_Process.h>
#endif
#ifdef ADD_NUTTX_FEATURES
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include "stdio.h"
#endif
#define MQTT_DEMO_BUF_SIZE 65535
#define MQTT_DEMO_SEND_TIMES 20
#define LWIP_MQTT_DEMO_TASK_STACK_SIZE 4096
#define LWIP_MQTT_DEMO_TASK_PRIO 20
static char mqtt_demo_ipaddr[] = {192, 168, 130, 77};
static char mqtt_demo_netmask[] = {255, 255, 254, 0};
static char mqtt_demo_gwaddr[] = {192, 168, 130, 1};
static pthread_t mqtt_client_task;
static pthread_t mqtt_server_task;
static uint16_t mqtt_socket_port = 1883;
static char mqtt_ip_str[128] = {192,168,100,1};
void MqttSocketConfigParam(char *ip_str)
{
int ip1, ip2, ip3, ip4, port = 0;
if(ip_str == NULL)
return;
if(sscanf(ip_str, "%d.%d.%d.%d:%d", &ip1, &ip2, &ip3, &ip4, &port)) {
printf("config ip %s port %d\n", ip_str, port);
strcpy(mqtt_ip_str, ip_str);
if(port)
mqtt_socket_port = port;
return;
}
if(sscanf(ip_str, "%d.%d.%d.%d", &ip1, &ip2, &ip3, &ip4)) {
printf("config ip %s\n", ip_str);
strcpy(mqtt_ip_str, ip_str);
}
}
MQTT_USER_MSG mqtt_user_msg;
uint8_t MQTT_Connect(void)
{
MQTTPacket_connectData data = MQTTPacket_connectData_initializer;
uint8_t buf[200];
int buflen = sizeof(buf);
int len = 0;
data.clientID.cstring = CLIENT_ID; //随机
data.keepAliveInterval = KEEPLIVE_TIME; //保持活跃
data.username.cstring = USER_NAME; //用户名
data.password.cstring = PASSWORD; //密钥
data.MQTTVersion = MQTT_VERSION; //3表示3.1版本4表示3.11版本
data.cleansession = 1;
//组装消息
len = MQTTSerialize_connect((unsigned char *)buf, buflen, &data);
//发送消息
transport_sendPacketBuffer(buf, len);
/* 等待连接响应 */
if (MQTTPacket_read(buf, buflen, transport_getdata) == CONNACK)
{
unsigned char sessionPresent, connack_rc;
if (MQTTDeserialize_connack(&sessionPresent, &connack_rc, buf, buflen) != 1 || connack_rc != 0)
{
lw_print("无法连接,错误代码是: %d\n", connack_rc);
return Connect_NOK;
}
else
{
lw_print("用户名与密钥验证成功MQTT连接成功\n");
return Connect_OK;
}
}
else
lw_print("MQTT连接无响应\n");
return Connect_NOTACK;
}
int32_t MQTT_PingReq(int32_t sock)
{
int32_t len;
uint8_t buf[200];
int32_t buflen = sizeof(buf);
fd_set readfd;
struct timeval tv;
tv.tv_sec = 5;
tv.tv_usec = 0;
FD_ZERO(&readfd);
FD_SET(sock,&readfd);
len = MQTTSerialize_pingreq(buf, buflen);
transport_sendPacketBuffer(buf, len);
//等待可读事件
if(select(sock+1,&readfd,NULL,NULL,&tv) == 0)
return -1;
//有可读事件
if(FD_ISSET(sock,&readfd) == 0)
return -2;
if(MQTTPacket_read(buf, buflen, transport_getdata) != PINGRESP)
return -3;
return 0;
}
/************************************************************************
** : MQTTSubscribe
** :
** : int32_t sock
** int8_t *topic
** enum QoS pos
** : >=0: <0:
** :
************************************************************************/
int32_t MQTTSubscribe(int32_t sock,char *topic,enum QoS pos)
{
static uint32_t PacketID = 0;
uint16_t packetidbk = 0;
int32_t conutbk = 0;
uint8_t buf[100];
int32_t buflen = sizeof(buf);
MQTTString topicString = MQTTString_initializer;
int32_t len;
int32_t req_qos,qosbk;
fd_set readfd;
struct timeval tv;
tv.tv_sec = 2;
tv.tv_usec = 0;
FD_ZERO(&readfd);
FD_SET(sock,&readfd);
//复制主题
topicString.cstring = (char *)topic;
//订阅质量
req_qos = pos;
//串行化订阅消息
len = MQTTSerialize_subscribe(buf, buflen, 0, PacketID++, 1, &topicString, &req_qos);
//发送TCP数据
if(transport_sendPacketBuffer(buf, len) < 0)
return -1;
//等待可读事件--等待超时
if(select(sock+1,&readfd,NULL,NULL,&tv) == 0)
return -2;
//有可读事件--没有可读事件
if(FD_ISSET(sock,&readfd) == 0)
return -3;
//等待订阅返回--未收到订阅返回
if(MQTTPacket_read(buf, buflen, transport_getdata) != SUBACK)
return -4;
//拆订阅回应包
if(MQTTDeserialize_suback(&packetidbk,1, &conutbk, &qosbk, buf, buflen) != 1)
return -5;
//检测返回数据的正确性
if((qosbk == 0x80)||(packetidbk != (PacketID-1)))
return -6;
//订阅成功
return 0;
}
int32_t ReadPacketTimeout(int32_t sock,uint8_t *buf,int32_t buflen,uint32_t timeout)
{
fd_set readfd;
struct timeval tv;
if(timeout != 0)
{
tv.tv_sec = timeout;
tv.tv_usec = 0;
FD_ZERO(&readfd);
FD_SET(sock,&readfd);
if(select(sock+1,&readfd,NULL,NULL,&tv) == 0)
return -1;
if(FD_ISSET(sock,&readfd) == 0)
return -1;
}
return MQTTPacket_read(buf, buflen, transport_getdata);
}
void deliverMessage(MQTTString *TopicName,MQTTMessage *msg,MQTT_USER_MSG *mqtt_user_msg)
{
//消息质量
mqtt_user_msg->msgqos = msg->qos;
//保存消息
memcpy(mqtt_user_msg->msg,msg->payload,msg->payloadlen);
mqtt_user_msg->msg[msg->payloadlen] = 0;
//保存消息长度
mqtt_user_msg->msglenth = msg->payloadlen;
//消息主题
memcpy((char *)mqtt_user_msg->topic,TopicName->lenstring.data,TopicName->lenstring.len);
mqtt_user_msg->topic[TopicName->lenstring.len] = 0;
//消息ID
mqtt_user_msg->packetid = msg->id;
//标明消息合法
mqtt_user_msg->valid = 1;
}
void UserMsgCtl(MQTT_USER_MSG *msg)
{
//这里处理数据只是打印,用户可以在这里添加自己的处理方式
lw_print("****收到订阅的消息******\n");
//<2F><><EFBFBD>غ<EFBFBD><D8BA><EFBFBD><EFBFBD><EFBFBD>Ϣ
switch(msg->msgqos)
{
case 0:
lw_print("MQTT>>消息质量QoS0\n");
break;
case 1:
lw_print("MQTT>>消息质量QoS1\n");
break;
case 2:
lw_print("MQTT>>消息质量QoS2\n");
break;
default:
lw_print("MQTT>>错误的消息质量\n");
break;
}
lw_print("MQTT>>消息主题:%s\n",msg->topic);
lw_print("MQTT>>消息内容:%s\n",msg->msg);
lw_print("MQTT>>消息长度:%d\n",msg->msglenth);
Proscess(msg->msg);
//处理完后销毁数据
msg->valid = 0;
}
void mqtt_pktype_ctl(uint8_t packtype,uint8_t *buf,uint32_t buflen)
{
MQTTMessage msg;
int32_t rc;
MQTTString receivedTopic;
uint32_t len;
lw_print("packtype:%d\n",packtype);
switch(packtype)
{
case PUBLISH:
if(MQTTDeserialize_publish(&msg.dup,(int*)&msg.qos, &msg.retained, &msg.id, &receivedTopic,
(unsigned char **)&msg.payload, &msg.payloadlen, buf, buflen) != 1)
return;
deliverMessage(&receivedTopic,&msg,&mqtt_user_msg);
if(msg.qos == QOS0)
{
//QOS0-不需要ACK
//直接处理数据
UserMsgCtl(&mqtt_user_msg);
return;
}
//发送PUBACK消息
if(msg.qos == QOS1)
{
len =MQTTSerialize_puback(buf,buflen,mqtt_user_msg.packetid);
if(len == 0)
return;
//发送返回
if(transport_sendPacketBuffer(buf,len)<0)
return;
//返回后处理消息
UserMsgCtl(&mqtt_user_msg);
return;
}
//对于质量2,只需要发送PUBREC就可以了
if(msg.qos == QOS2)
{
len = MQTTSerialize_ack(buf, buflen, PUBREC, 0, mqtt_user_msg.packetid);
if(len == 0)
return;
//发送返回
transport_sendPacketBuffer(buf,len);
}
break;
case PUBREL:
//解析包数据必须包ID相同才可以
rc = MQTTDeserialize_ack(&msg.type,&msg.dup, &msg.id, buf,buflen);
if((rc != 1)||(msg.type != PUBREL)||(msg.id != mqtt_user_msg.packetid))
return ;
//收到PUBREL需要处理并抛弃数据
if(mqtt_user_msg.valid == 1)
{
//返回后处理消息
UserMsgCtl(&mqtt_user_msg);
}
//串行化PUBCMP消息
len = MQTTSerialize_pubcomp(buf,buflen,msg.id);
if(len == 0)
return;
//发送返回--PUBCOMP
transport_sendPacketBuffer(buf,len);
break;
case PUBACK://等级1客户端推送数据后服务器返回
break;
case PUBREC://等级2客户端推送数据后服务器返回
break;
case PUBCOMP://等级2客户端推送PUBREL后服务器返回
break;
default:
break;
}
}
static void *MqttSocketRecvTask(void *arg)
{
MQTT_START:
lw_print("Recv begin**********\n");
int fd = -1, clientfd;
int recv_len;
int ret;
char *recv_buf;
struct sockaddr_in mqtt_addr;
socklen_t addr_len;
fd = socket(AF_INET, SOCK_STREAM, 0);
if (fd < 0) {
lw_print("Socket error\n");
return NULL;
}
struct sockaddr_in mqtt_sock;
mqtt_sock.sin_family = AF_INET;
mqtt_sock.sin_port = htons(mqtt_socket_port);
mqtt_sock.sin_addr.s_addr = inet_addr(mqtt_ip_str);
memset(&(mqtt_sock.sin_zero), 0, sizeof(mqtt_sock.sin_zero));
ret = connect(fd, (struct sockaddr *)&mqtt_sock, sizeof(struct sockaddr));
if (ret < 0) {
lw_print("Unable to connect %s:%d = %d\n", mqtt_ip_str, mqtt_socket_port, ret);
close(fd);
return NULL;
}
lw_print("MQTT connect %s:%d success, begin to verify username and password.\n", mqtt_ip_str, mqtt_socket_port);
if(MQTT_Connect() != Connect_OK)
{
lw_print("MQTT verify failed.\n");
shutdown(fd, SHUT_WR);
recv(fd, NULL, (size_t)0, 0);
close(fd);
PrivTaskDelay(1000);
goto MQTT_START;
}
lw_print("MQTT subscribe begin.\n");
if(MQTTSubscribe(fd,(char *)TOPIC,QOS1) < 0)
{
lw_print("MQTT subscribe failed.\n");
shutdown(fd, SHUT_WR);
recv(fd, NULL, (size_t)0, 0);
close(fd);
return NULL;
}
lw_print("subscribe success.\n");
fd_set readfd;
uint8_t no_mqtt_msg_exchange = 1;
uint8_t buf[MSG_MAX_LEN];
int32_t buflen = sizeof(buf);
int32_t type;
struct timeval tv;
tv.tv_sec = 0;
tv.tv_usec = 10;
int32_t curtick=0;
while(1)
{
// lw_print("waiting********\n");
curtick +=1;
no_mqtt_msg_exchange = 1;
FD_ZERO(&readfd);
FD_SET(fd,&readfd);
select(fd+1,&readfd,NULL,NULL,&tv);
if(FD_ISSET(fd,&readfd) != 0)
{
type = ReadPacketTimeout(fd,buf,buflen,0);
if(type != -1)
{
lw_print("ctl***********\n");
mqtt_pktype_ctl(type,buf,buflen);
no_mqtt_msg_exchange = 0;
}
}
if( curtick >(2*10000))
{
curtick =0;
//判断是否有数据交换
if(no_mqtt_msg_exchange == 0)
{
//如果有数据交换这次就不需要发送PING消息
continue;
}
if(MQTT_PingReq(fd) < 0)
{
//重连服务器
lw_print("发送保持活性ping失败....\n");
goto CLOSE;
}
lw_print("发送保持活性ping作为心跳成功....\n");
no_mqtt_msg_exchange = 0;
}
}
CLOSE:
lw_print("MQTT subscribe failed.\n");
shutdown(fd, SHUT_WR);
recv(fd, NULL, (size_t)0, 0);
close(fd);
return NULL;
}
void MqttSocketRecvTest(int argc, char *argv[])
{
if(argc >= 2) {
lw_print("lw: [%s] target ip %s\n", __func__, argv[1]);
MqttSocketConfigParam(argv[1]);
}
// ip4_addr_t dns_ip;
// netconn_gethostbyname(HOST_NAME, &dns_ip);
// char* host_ip = ip_ntoa(&dns_ip);
// lw_print("host name : %s , host_ip : %s\n",HOST_NAME,host_ip);
// MqttSocketConfigParam(host_ip);
#ifdef ADD_XIZI_FEATURES
lwip_config_tcp(0, mqtt_demo_ipaddr, mqtt_demo_netmask, mqtt_demo_gwaddr);
pthread_attr_t attr;
attr.schedparam.sched_priority = LWIP_MQTT_DEMO_TASK_PRIO;
attr.stacksize = LWIP_MQTT_DEMO_TASK_STACK_SIZE;
#endif
#ifdef ADD_NUTTX_FEATURES
pthread_attr_t attr = PTHREAD_ATTR_INITIALIZER;
attr.priority = LWIP_mqtt_DEMO_TASK_PRIO;
attr.stacksize = LWIP_mqtt_DEMO_TASK_STACK_SIZE;
#endif
PrivTaskCreate(&mqtt_server_task, &attr, &MqttSocketRecvTask, NULL);
PrivTaskStartup(&mqtt_server_task);
}
PRIV_SHELL_CMD_FUNCTION(MqttSocketRecvTest, a tcp send sample, PRIV_SHELL_CMD_MAIN_ATTR);
typedef struct
{
uint8_t humi_high8bit; //ԭʼ<D4AD><CABC><EFBFBD>ݣ<EFBFBD>ʪ<EFBFBD>ȸ<EFBFBD>
uint8_t humi_low8bit; //ԭʼ<D4AD><CABC><EFBFBD>ݣ<EFBFBD>ʪ<EFBFBD>ȵ<EFBFBD>
uint8_t temp_high8bit; //ԭʼ<D4AD><CABC><EFBFBD>ݣ<EFBFBD><DDA3>¶ȸ<C2B6>
uint8_t temp_low8bit; //ԭʼ<D4AD><CABC><EFBFBD>ݣ<EFBFBD><DDA3>¶ȸ<C2B6>
uint8_t check_sum; //У<><D0A3><EFBFBD>
double humidity; //ʵ<><CAB5>ʪ<EFBFBD><CAAA>
double temperature; //ʵ<><CAB5><EFBFBD><EFBFBD>
} DHT11_Data_TypeDef;
uint16_t GetNextPackID(void)
{
static uint16_t pubpacketid = 0;
return pubpacketid++;
}
int32_t WaitForPacket(int32_t sock,uint8_t packettype,uint8_t times)
{
int32_t type;
uint8_t buf[MSG_MAX_LEN];
uint8_t n = 0;
int32_t buflen = sizeof(buf);
do
{
//读取数据包
type = ReadPacketTimeout(sock,buf,buflen,2);
if(type != -1)
mqtt_pktype_ctl(type,buf,buflen);
n++;
}while((type != packettype)&&(n < times));
//收到期望的包
if(type == packettype)
return 0;
else
return -1;
}
int32_t MQTTMsgPublish(int32_t sock, char *topic, int8_t qos, uint8_t* msg)
{
int8_t retained = 0; //保留标志位
uint32_t msg_len; //数据长度
uint8_t buf[MSG_MAX_LEN];
int32_t buflen = sizeof(buf),len;
MQTTString topicString = MQTTString_initializer;
uint16_t packid = 0,packetidbk;
//填充主题
topicString.cstring = (char *)topic;
//填充数据包ID
if((qos == QOS1)||(qos == QOS2))
{
packid = GetNextPackID();
}
else
{
qos = QOS0;
retained = 0;
packid = 0;
}
msg_len = strlen((char *)msg);
//推送消息
len = MQTTSerialize_publish(buf, buflen, 0, qos, retained, packid, topicString, (unsigned char*)msg, msg_len);
if(len <= 0)
return -1;
if(transport_sendPacketBuffer(buf, len) < 0)
return -2;
//质量等级0不需要返回
if(qos == QOS0)
{
return 0;
}
//等级1
if(qos == QOS1)
{
//等待PUBACK
if(WaitForPacket(sock,PUBACK,5) < 0)
return -3;
return 1;
}
//等级2
if(qos == QOS2)
{
//等待PUBREC
if(WaitForPacket(sock,PUBREC,5) < 0)
return -3;
//发送PUBREL
len = MQTTSerialize_pubrel(buf, buflen,0, packetidbk);
if(len == 0)
return -4;
if(transport_sendPacketBuffer(buf, len) < 0)
return -6;
//等待PUBCOMP
if(WaitForPacket(sock,PUBREC,5) < 0)
return -7;
return 2;
}
//等级错误
return -8;
}
static void *MqttSocketSendTask(void *arg)
{
int fd = -1, clientfd;
int recv_len;
int ret;
char *recv_buf;
struct sockaddr_in mqtt_addr;
socklen_t addr_len;
fd = socket(AF_INET, SOCK_STREAM, 0);
if (fd < 0) {
lw_print("Socket error\n");
return NULL;
}
struct sockaddr_in mqtt_sock;
mqtt_sock.sin_family = AF_INET;
mqtt_sock.sin_port = htons(mqtt_socket_port);
mqtt_sock.sin_addr.s_addr = inet_addr(mqtt_ip_str);
memset(&(mqtt_sock.sin_zero), 0, sizeof(mqtt_sock.sin_zero));
ret = connect(fd, (struct sockaddr *)&mqtt_sock, sizeof(struct sockaddr));
if (ret < 0) {
lw_print("Unable to connect %s:%d = %d\n", mqtt_ip_str, mqtt_socket_port, ret);
close(fd);
return NULL;
}
lw_print("MQTT connect %s:%d success, begin to verify hostname and password.\n", mqtt_ip_str, mqtt_socket_port);
if(MQTT_Connect() != Connect_OK)
{
lw_print("MQTT verify failed.\n");
shutdown(fd, SHUT_WR);
recv(fd, NULL, (size_t)0, 0);
close(fd);
return NULL;
}
lw_print("MQTT subscribe begin.\n");
if(MQTTSubscribe(fd,(char *)TOPIC,QOS1) < 0)
{
lw_print("MQTT subscribe failed.\n");
shutdown(fd, SHUT_WR);
recv(fd, NULL, (size_t)0, 0);
close(fd);
return NULL;
}
lw_print("subscribe success.\n");
uint8_t no_mqtt_msg_exchange = 1;
uint32_t curtick=0;
uint8_t res;
cJSON* cJSON_Data = NULL;
cJSON_Data = cJSON_Data_Init();
DHT11_Data_TypeDef* recv_data;
double a,b;
while(1)
{
curtick+=1;
char* p ="Hello,here is hc";
ret = MQTTMsgPublish(fd,(char*)TOPIC,QOS0,(uint8_t*)p);
if(ret >= 0)
{
no_mqtt_msg_exchange = 0;
PrivTaskDelay(1000);
}
}
}
void MqttSocketSendTest(int argc, char *argv[])
{
if(argc >= 2) {
lw_print("lw: [%s] target ip %s\n", __func__, argv[1]);
MqttSocketConfigParam(argv[1]);
}
// ip4_addr_t dns_ip;
// netconn_gethostbyname(HOST_NAME, &dns_ip);
// char* host_ip = ip_ntoa(&dns_ip);
// lw_print("host name : %s , host_ip : %s\n",HOST_NAME,host_ip);
// MqttSocketConfigParam(host_ip);
#ifdef ADD_XIZI_FEATURES
lwip_config_tcp(0, mqtt_demo_ipaddr, mqtt_demo_netmask, mqtt_demo_gwaddr);
pthread_attr_t attr;
attr.schedparam.sched_priority = LWIP_MQTT_DEMO_TASK_PRIO;
attr.stacksize = LWIP_MQTT_DEMO_TASK_STACK_SIZE;
#endif
#ifdef ADD_NUTTX_FEATURES
pthread_attr_t attr = PTHREAD_ATTR_INITIALIZER;
attr.priority = LWIP_mqtt_DEMO_TASK_PRIO;
attr.stacksize = LWIP_mqtt_DEMO_TASK_STACK_SIZE;
#endif
PrivTaskCreate(&mqtt_client_task, &attr, &MqttSocketSendTask, NULL);
PrivTaskStartup(&mqtt_client_task);
}
PRIV_SHELL_CMD_FUNCTION(MqttSocketSendTest, a tcp send sample, PRIV_SHELL_CMD_MAIN_ATTR);

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@ -0,0 +1,99 @@
/*
* Copyright (c) 2022 AIIT XUOS Lab
* XiUOS is licensed under Mulan PSL v2.
* You can use this software according to the terms and conditions of the Mulan PSL v2.
* You may obtain a copy of Mulan PSL v2 at:
* http://license.coscl.org.cn/MulanPSL2
* THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
* EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
* MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
* See the Mulan PSL v2 for more details.
*/
/**
* @file test_mqttclient.h
* @brief mqtt subscribe fuction test
* @version 3.0
* @author AIIT XUOS Lab
* @date 2023.8.10
*/
#include <stdint.h>
#define MSG_MAX_LEN 1024
#define MSG_TOPIC_LEN 50
#define KEEPLIVE_TIME 650
#define MQTT_VERSION 4
#ifdef LWIP_DNS
#define HOST_NAME "iot-06z00im0uwa0ki2.mqtt.iothub.aliyuncs.com" //服务器域名
#else
#define HOST_NAME "iot-06z00im0uwa0ki2.mqtt.iothub.aliyuncs.com" //服务器IP地址
#endif
//#define HOST_IP "129.204.201.235"
#define HOST_PORT 1883 //由于是TCP连接端口必须是1883
#define CLIENT_ID "iw3rn3pa11K.test|securemode=2,signmethod=hmacsha256,timestamp=1689296035604|" //随机的id
#define USER_NAME "test&iw3rn3pa11K" //用户名
#define PASSWORD "7b948d22fe46f0f63d1a403376d26e7cb298abc227d29e44311d7040307a71f8" //秘钥
#define TOPIC "/iw3rn3pa11K/test/user/Test" //订阅的主题
#define TEST_MESSAGE "test_message" //发送测试消息
// #define CLIENT_ID "hc123456789" //随机的id
// #define USER_NAME "xiuos" //用户名
// #define PASSWORD "xiuos" //秘钥
enum QoS
{ QOS0 = 0,
QOS1,
QOS2
};
enum MQTT_Connect
{
Connect_OK = 0,
Connect_NOK,
Connect_NOTACK
};
//数据交互结构体
typedef struct __MQTTMessage
{
uint32_t qos;
uint8_t retained;
uint8_t dup;
uint16_t id;
uint8_t type;
void *payload;
int32_t payloadlen;
}MQTTMessage;
//用户接收消息结构体
typedef struct __MQTT_MSG
{
uint8_t msgqos; //消息质量
uint8_t msg[MSG_MAX_LEN]; //消息
uint32_t msglenth; //消息长度
uint8_t topic[MSG_TOPIC_LEN]; //主题
uint16_t packetid; //消息ID
uint8_t valid; //标明消息是否有效
}MQTT_USER_MSG;
//发送消息结构体
typedef struct
{
int8_t topic[MSG_TOPIC_LEN];
int8_t qos;
int8_t retained;
uint8_t msg[MSG_MAX_LEN];
uint8_t msglen;
} mqtt_recv_msg_t, *p_mqtt_recv_msg_t, mqtt_send_msg_t, *p_mqtt_send_msg_t;

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@ -1,3 +1,4 @@
SRC_FILES := cJSON.c
SRC_FILES += cJSON_Process.c
include $(KERNEL_ROOT)/compiler.mk

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#include "cJSON_Process.h"
#include <lwip/sockets.h>
cJSON* cJSON_Data_Init(void)
{
cJSON* cJSON_Root = NULL; //json根节点
cJSON_Root = cJSON_CreateObject(); /*创建项目*/
if(NULL == cJSON_Root)
{
return NULL;
}
cJSON_AddStringToObject(cJSON_Root, NAME, DEFAULT_NAME); /*添加元素 键值对*/
cJSON_AddNumberToObject(cJSON_Root, TEMP_NUM, DEFAULT_TEMP_NUM);
cJSON_AddNumberToObject(cJSON_Root, HUM_NUM, DEFAULT_HUM_NUM);
char* p = cJSON_Print(cJSON_Root); /*p 指向的字符串是json格式的*/
p = NULL;
return cJSON_Root;
}
uint8_t cJSON_Update(const cJSON * const object,const char * const string,void *d)
{
cJSON* node = NULL; //json根节点
node = cJSON_GetObjectItem(object,string);
if(node == NULL)
return 0;
if(cJSON_IsBool(node))
{
int *b = (int*)d;
cJSON_GetObjectItem(object,string)->type = *b ? cJSON_True : cJSON_False;
return 1;
}
else if(cJSON_IsString(node))
{
cJSON_GetObjectItem(object,string)->valuestring = (char*)d;
return 1;
}
else if(cJSON_IsNumber(node))
{
double *num = (double*)d;
cJSON_GetObjectItem(object,string)->valuedouble = (double)*num;
return 1;
}
else
return 1;
}
void Proscess(void* data)
{
cJSON *root,*json_name,*json_temp_num,*json_hum_num;
root = cJSON_Parse((char*)data); //解析成json形式
json_name = cJSON_GetObjectItem( root , NAME); //获取键值内容
json_temp_num = cJSON_GetObjectItem( root , TEMP_NUM );
json_hum_num = cJSON_GetObjectItem( root , HUM_NUM );
lw_print("name:%s\n temp_num:%f\n hum_num:%f\n",
json_name->valuestring,
json_temp_num->valuedouble,
json_hum_num->valuedouble);
cJSON_Delete(root); //释放内存
}

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#ifndef _CJSON_PROCESS_H_
#define _CJSON_PROCESS_H_
#include "cJSON.h"
#include "stdint.h"
#define NAME "name"
#define TEMP_NUM "temp"
#define HUM_NUM "hum"
#define DEFAULT_NAME "fire"
#define DEFAULT_TEMP_NUM 25.0
#define DEFAULT_HUM_NUM 50.0
#define UPDATE_SUCCESS 1
#define UPDATE_FAIL 0
cJSON* cJSON_Data_Init(void);
uint8_t cJSON_Update(const cJSON * const object,const char * const string,void * d);
void Proscess(void* data);
#endif