mirror of
https://github.com/eclipse/paho.mqtt-sn.embedded-c.git
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153 lines
3.7 KiB
C
153 lines
3.7 KiB
C
/*******************************************************************************
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* Copyright (c) 2014 IBM Corp.
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*
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* All rights reserved. This program and the accompanying materials
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* are made available under the terms of the Eclipse Public License v1.0
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* and Eclipse Distribution License v1.0 which accompany this distribution.
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*
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* The Eclipse Public License is available at
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* http://www.eclipse.org/legal/epl-v10.html
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* and the Eclipse Distribution License is available at
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* http://www.eclipse.org/org/documents/edl-v10.php.
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*
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* Contributors:
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* Ian Craggs - initial API and implementation and/or initial documentation
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* TomoakiiYamaguchi - modify for C++
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*******************************************************************************/
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#ifndef MQTTSNPACKET_H_
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#define MQTTSNPACKET_H_
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#if defined(__cplusplus) /* If this is a C++ compiler, use C linkage */
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extern "C" {
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#endif
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enum errors
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{
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MQTTSNPACKET_BUFFER_TOO_SHORT = -2,
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MQTTSNPACKET_READ_ERROR = -1,
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MQTTSNPACKET_READ_COMPLETE
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};
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#define MQTTSN_PROTOCOL_VERSION 0x01
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enum MQTTSN_connackCodes
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{
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MQTTSN_RC_ACCEPTED,
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MQTTSN_RC_REJECTED_CONGESTED,
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MQTTSN_RC_REJECTED_INVALID_TOPIC_ID,
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MQTTSN_RC_NOT_SUPPORTED
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};
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typedef enum
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{
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MQTTSN_TOPIC_TYPE_NORMAL, /* topic id in publish, topic name in subscribe */
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MQTTSN_TOPIC_TYPE_PREDEFINED,
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MQTTSN_TOPIC_TYPE_SHORT
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}MQTTSN_topicTypes;
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enum MQTTSN_msgTypes
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{
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MQTTSN_ADVERTISE, MQTTSN_SEARCHGW, MQTTSN_GWINFO, MQTTSN_RESERVED1,
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MQTTSN_CONNECT, MQTTSN_CONNACK,
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MQTTSN_WILLTOPICREQ, MQTTSN_WILLTOPIC, MQTTSN_WILLMSGREQ, MQTTSN_WILLMSG,
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MQTTSN_REGISTER, MQTTSN_REGACK,
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MQTTSN_PUBLISH, MQTTSN_PUBACK, MQTTSN_PUBCOMP, MQTTSN_PUBREC, MQTTSN_PUBREL, MQTTSN_RESERVED2,
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MQTTSN_SUBSCRIBE, MQTTSN_SUBACK, MQTTSN_UNSUBSCRIBE, MQTTSN_UNSUBACK,
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MQTTSN_PINGREQ, MQTTSN_PINGRESP,
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MQTTSN_DISCONNECT, MQTTSN_RESERVED3,
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MQTTSN_WILLTOPICUPD, MQTTSN_WILLTOPICRESP, MQTTSN_WILLMSGUPD, MQTTSN_WILLMSGRESP,
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MQTTSN_ENCAPSULATED = 0xfe
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};
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typedef struct
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{
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MQTTSN_topicTypes type;
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union
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{
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unsigned short id;
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char short_name[2];
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struct
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{
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char* name;
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int len;
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} long_;
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} data;
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} MQTTSN_topicid;
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/**
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* Bitfields for the MQTT-SN flags byte.
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*/
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typedef union
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{
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unsigned char all;
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#if defined(REVERSED)
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struct
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{
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int dup: 1;
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unsigned int QoS : 2;
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unsigned int retain : 1;
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unsigned int will : 1;
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unsigned int cleanSession : 1;
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unsigned int topicIdType : 2;
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} bits;
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#else
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struct
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{
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unsigned int topicIdType : 2;
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unsigned int cleanSession : 1;
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unsigned int will : 1;
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unsigned int retain : 1;
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unsigned int QoS : 2;
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int dup: 1;
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} bits;
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#endif
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} MQTTSNFlags;
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typedef struct
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{
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int len;
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char* data;
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} MQTTSNLenString;
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typedef struct
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{
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char* cstring;
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MQTTSNLenString lenstring;
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} MQTTSNString;
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#define MQTTSNString_initializer {NULL, {0, NULL}}
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int MQTTSNstrlen(MQTTSNString mqttsnstring);
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#include "MQTTSNConnect.h"
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#include "MQTTSNPublish.h"
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#include "MQTTSNSubscribe.h"
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#include "MQTTSNUnsubscribe.h"
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#include "MQTTSNSearch.h"
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const char* MQTTSNPacket_name(int ptype);
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int MQTTSNPacket_len(int length);
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int MQTTSNPacket_encode(unsigned char* buf, int length);
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int MQTTSNPacket_decode(unsigned char* buf, int buflen, int* value);
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int readInt(unsigned char** pptr);
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char readChar(unsigned char** pptr);
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void writeChar(unsigned char** pptr, char c);
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void writeInt(unsigned char** pptr, int anInt);
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int readMQTTSNString(MQTTSNString* mqttstring, unsigned char** pptr, unsigned char* enddata);
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void writeCString(unsigned char** pptr, char* string);
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void writeMQTTSNString(unsigned char** pptr, MQTTSNString mqttstring);
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int MQTTSNPacket_read(unsigned char* buf, int buflen, int (*getfn)(unsigned char*, int));
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#ifdef __cplusplus /* If this is a C++ compiler, use C linkage */
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}
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#endif
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#endif /* MQTTSNPACKET_H_ */
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