123
MQTTSNConnectServer.c@2:573d544b5d3c, 2019-01-03 (annotated)
- Committer:
- m_ahsan
- Date:
- Thu Jan 03 05:49:15 2019 +0000
- Revision:
- 2:573d544b5d3c
- Parent:
- 1:7fa362fa563f
test
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
icraggs | 0:c524a894b5e8 | 1 | /******************************************************************************* |
icraggs | 0:c524a894b5e8 | 2 | * Copyright (c) 2014 IBM Corp. |
icraggs | 0:c524a894b5e8 | 3 | * |
icraggs | 0:c524a894b5e8 | 4 | * All rights reserved. This program and the accompanying materials |
icraggs | 0:c524a894b5e8 | 5 | * are made available under the terms of the Eclipse Public License v1.0 |
icraggs | 0:c524a894b5e8 | 6 | * and Eclipse Distribution License v1.0 which accompany this distribution. |
icraggs | 0:c524a894b5e8 | 7 | * |
icraggs | 0:c524a894b5e8 | 8 | * The Eclipse Public License is available at |
icraggs | 0:c524a894b5e8 | 9 | * http://www.eclipse.org/legal/epl-v10.html |
icraggs | 0:c524a894b5e8 | 10 | * and the Eclipse Distribution License is available at |
icraggs | 0:c524a894b5e8 | 11 | * http://www.eclipse.org/org/documents/edl-v10.php. |
icraggs | 0:c524a894b5e8 | 12 | * |
icraggs | 0:c524a894b5e8 | 13 | * Contributors: |
icraggs | 0:c524a894b5e8 | 14 | * Ian Craggs - initial API and implementation and/or initial documentation |
icraggs | 0:c524a894b5e8 | 15 | *******************************************************************************/ |
icraggs | 0:c524a894b5e8 | 16 | |
icraggs | 0:c524a894b5e8 | 17 | #include "StackTrace.h" |
icraggs | 0:c524a894b5e8 | 18 | #include "MQTTSNPacket.h" |
icraggs | 0:c524a894b5e8 | 19 | #include <string.h> |
icraggs | 0:c524a894b5e8 | 20 | |
icraggs | 0:c524a894b5e8 | 21 | #define min(a, b) ((a < b) ? 1 : 0) |
icraggs | 0:c524a894b5e8 | 22 | |
icraggs | 0:c524a894b5e8 | 23 | |
icraggs | 0:c524a894b5e8 | 24 | /** |
icraggs | 0:c524a894b5e8 | 25 | * Deserializes the supplied (wire) buffer into connect data structure |
icraggs | 0:c524a894b5e8 | 26 | * @param data the connect data structure to be filled out |
icraggs | 0:c524a894b5e8 | 27 | * @param buf the raw buffer data, of the correct length determined by the remaining length field |
icraggs | 0:c524a894b5e8 | 28 | * @param len the length in bytes of the data in the supplied buffer |
icraggs | 0:c524a894b5e8 | 29 | * @return error code. 1 is success, 0 is failure |
icraggs | 0:c524a894b5e8 | 30 | */ |
icraggs | 0:c524a894b5e8 | 31 | int MQTTSNDeserialize_connect(MQTTSNPacket_connectData* data, unsigned char* buf, int len) |
icraggs | 0:c524a894b5e8 | 32 | { |
icraggs | 0:c524a894b5e8 | 33 | MQTTSNFlags flags = {0}; |
icraggs | 0:c524a894b5e8 | 34 | unsigned char* curdata = buf; |
icraggs | 0:c524a894b5e8 | 35 | unsigned char* enddata = &buf[len]; |
icraggs | 0:c524a894b5e8 | 36 | int rc = 0; |
icraggs | 0:c524a894b5e8 | 37 | int version = 0; |
icraggs | 0:c524a894b5e8 | 38 | int mylen = 0; |
icraggs | 0:c524a894b5e8 | 39 | |
icraggs | 0:c524a894b5e8 | 40 | FUNC_ENTRY; |
icraggs | 0:c524a894b5e8 | 41 | curdata += (rc = MQTTSNPacket_decode(curdata, len, &mylen)); /* read length */ |
icraggs | 0:c524a894b5e8 | 42 | enddata = buf + mylen; |
icraggs | 0:c524a894b5e8 | 43 | if (enddata - curdata < 2) |
icraggs | 0:c524a894b5e8 | 44 | goto exit; |
icraggs | 0:c524a894b5e8 | 45 | |
icraggs | 1:7fa362fa563f | 46 | if (MQTTSNPacket_readChar(&curdata) != MQTTSN_CONNECT) |
icraggs | 0:c524a894b5e8 | 47 | goto exit; |
icraggs | 0:c524a894b5e8 | 48 | |
icraggs | 1:7fa362fa563f | 49 | flags.all = MQTTSNPacket_readChar(&curdata); |
icraggs | 0:c524a894b5e8 | 50 | data->cleansession = flags.bits.cleanSession; |
icraggs | 0:c524a894b5e8 | 51 | data->willFlag = flags.bits.will; |
icraggs | 0:c524a894b5e8 | 52 | |
icraggs | 1:7fa362fa563f | 53 | if ((version = (int)MQTTSNPacket_readChar(&curdata)) != 1) /* Protocol version */ |
icraggs | 0:c524a894b5e8 | 54 | goto exit; |
icraggs | 0:c524a894b5e8 | 55 | |
icraggs | 1:7fa362fa563f | 56 | data->duration = MQTTSNPacket_readInt(&curdata); |
icraggs | 0:c524a894b5e8 | 57 | |
icraggs | 0:c524a894b5e8 | 58 | if (!readMQTTSNString(&data->clientID, &curdata, enddata)) |
icraggs | 0:c524a894b5e8 | 59 | goto exit; |
icraggs | 0:c524a894b5e8 | 60 | |
icraggs | 0:c524a894b5e8 | 61 | rc = 1; |
icraggs | 0:c524a894b5e8 | 62 | exit: |
icraggs | 0:c524a894b5e8 | 63 | FUNC_EXIT_RC(rc); |
icraggs | 0:c524a894b5e8 | 64 | return rc; |
icraggs | 0:c524a894b5e8 | 65 | } |
icraggs | 0:c524a894b5e8 | 66 | |
icraggs | 0:c524a894b5e8 | 67 | |
icraggs | 0:c524a894b5e8 | 68 | /** |
icraggs | 0:c524a894b5e8 | 69 | * Serializes the connack packet into the supplied buffer. |
icraggs | 0:c524a894b5e8 | 70 | * @param buf the buffer into which the packet will be serialized |
icraggs | 0:c524a894b5e8 | 71 | * @param buflen the length in bytes of the supplied buffer |
icraggs | 0:c524a894b5e8 | 72 | * @param connack_rc the integer connack return code to be used |
icraggs | 0:c524a894b5e8 | 73 | * @return serialized length, or error if 0 |
icraggs | 0:c524a894b5e8 | 74 | */ |
icraggs | 0:c524a894b5e8 | 75 | int MQTTSNSerialize_connack(unsigned char* buf, int buflen, int connack_rc) |
icraggs | 0:c524a894b5e8 | 76 | { |
icraggs | 0:c524a894b5e8 | 77 | int rc = 0; |
icraggs | 0:c524a894b5e8 | 78 | unsigned char *ptr = buf; |
icraggs | 0:c524a894b5e8 | 79 | |
icraggs | 0:c524a894b5e8 | 80 | FUNC_ENTRY; |
icraggs | 0:c524a894b5e8 | 81 | if (buflen < 3) |
icraggs | 0:c524a894b5e8 | 82 | { |
icraggs | 0:c524a894b5e8 | 83 | rc = MQTTSNPACKET_BUFFER_TOO_SHORT; |
icraggs | 0:c524a894b5e8 | 84 | goto exit; |
icraggs | 0:c524a894b5e8 | 85 | } |
icraggs | 0:c524a894b5e8 | 86 | |
icraggs | 0:c524a894b5e8 | 87 | ptr += MQTTSNPacket_encode(ptr, 3); /* write length */ |
icraggs | 1:7fa362fa563f | 88 | MQTTSNPacket_writeChar(&ptr, MQTTSN_CONNACK); |
icraggs | 1:7fa362fa563f | 89 | MQTTSNPacket_writeChar(&ptr, connack_rc); |
icraggs | 0:c524a894b5e8 | 90 | |
icraggs | 0:c524a894b5e8 | 91 | rc = ptr - buf; |
icraggs | 0:c524a894b5e8 | 92 | exit: |
icraggs | 0:c524a894b5e8 | 93 | FUNC_EXIT_RC(rc); |
icraggs | 0:c524a894b5e8 | 94 | return rc; |
icraggs | 0:c524a894b5e8 | 95 | } |
icraggs | 0:c524a894b5e8 | 96 | |
icraggs | 0:c524a894b5e8 | 97 | |
icraggs | 0:c524a894b5e8 | 98 | /** |
icraggs | 0:c524a894b5e8 | 99 | * Deserializes the supplied (wire) buffer into disconnect data - optional duration |
icraggs | 0:c524a894b5e8 | 100 | * @param duration returned integer value of the duration field, -1 if no duration was specified |
icraggs | 0:c524a894b5e8 | 101 | * @param buf the raw buffer data, of the correct length determined by the remaining length field |
icraggs | 0:c524a894b5e8 | 102 | * @param len the length in bytes of the data in the supplied buffer |
icraggs | 0:c524a894b5e8 | 103 | * @return error code. 1 is success, 0 is failure |
icraggs | 0:c524a894b5e8 | 104 | */ |
icraggs | 0:c524a894b5e8 | 105 | int MQTTSNDeserialize_disconnect(int* duration, unsigned char* buf, int buflen) |
icraggs | 0:c524a894b5e8 | 106 | { |
icraggs | 0:c524a894b5e8 | 107 | unsigned char* curdata = buf; |
icraggs | 0:c524a894b5e8 | 108 | unsigned char* enddata = NULL; |
icraggs | 0:c524a894b5e8 | 109 | int rc = -1; |
icraggs | 0:c524a894b5e8 | 110 | int mylen; |
icraggs | 0:c524a894b5e8 | 111 | |
icraggs | 0:c524a894b5e8 | 112 | FUNC_ENTRY; |
icraggs | 0:c524a894b5e8 | 113 | curdata += (rc = MQTTSNPacket_decode(curdata, buflen, &mylen)); /* read length */ |
icraggs | 0:c524a894b5e8 | 114 | enddata = buf + mylen; |
icraggs | 0:c524a894b5e8 | 115 | if (enddata - curdata < 1) |
icraggs | 0:c524a894b5e8 | 116 | goto exit; |
icraggs | 0:c524a894b5e8 | 117 | |
icraggs | 1:7fa362fa563f | 118 | if (MQTTSNPacket_readChar(&curdata) != MQTTSN_DISCONNECT) |
icraggs | 0:c524a894b5e8 | 119 | goto exit; |
icraggs | 0:c524a894b5e8 | 120 | |
icraggs | 0:c524a894b5e8 | 121 | if (enddata - curdata == 2) |
icraggs | 1:7fa362fa563f | 122 | *duration = MQTTSNPacket_readInt(&curdata); |
icraggs | 0:c524a894b5e8 | 123 | else if (enddata != curdata) |
icraggs | 0:c524a894b5e8 | 124 | goto exit; |
icraggs | 0:c524a894b5e8 | 125 | |
icraggs | 0:c524a894b5e8 | 126 | rc = 1; |
icraggs | 0:c524a894b5e8 | 127 | exit: |
icraggs | 0:c524a894b5e8 | 128 | FUNC_EXIT_RC(rc); |
icraggs | 0:c524a894b5e8 | 129 | return rc; |
icraggs | 0:c524a894b5e8 | 130 | } |
icraggs | 0:c524a894b5e8 | 131 | |
icraggs | 0:c524a894b5e8 | 132 | |
icraggs | 0:c524a894b5e8 | 133 | /** |
icraggs | 0:c524a894b5e8 | 134 | * Serializes a willtopicreq packet into the supplied buffer. |
icraggs | 0:c524a894b5e8 | 135 | * @param buf the buffer into which the packet will be serialized |
icraggs | 0:c524a894b5e8 | 136 | * @param buflen the length in bytes of the supplied buffer |
icraggs | 0:c524a894b5e8 | 137 | * @return serialized length, or error if 0 |
icraggs | 0:c524a894b5e8 | 138 | */ |
icraggs | 0:c524a894b5e8 | 139 | int MQTTSNSerialize_willtopicreq(unsigned char* buf, int buflen) |
icraggs | 0:c524a894b5e8 | 140 | { |
icraggs | 0:c524a894b5e8 | 141 | int rc = 0; |
icraggs | 0:c524a894b5e8 | 142 | unsigned char *ptr = buf; |
icraggs | 0:c524a894b5e8 | 143 | |
icraggs | 0:c524a894b5e8 | 144 | FUNC_ENTRY; |
icraggs | 0:c524a894b5e8 | 145 | if (buflen < 2) |
icraggs | 0:c524a894b5e8 | 146 | { |
icraggs | 0:c524a894b5e8 | 147 | rc = MQTTSNPACKET_BUFFER_TOO_SHORT; |
icraggs | 0:c524a894b5e8 | 148 | goto exit; |
icraggs | 0:c524a894b5e8 | 149 | } |
icraggs | 0:c524a894b5e8 | 150 | |
icraggs | 0:c524a894b5e8 | 151 | ptr += MQTTSNPacket_encode(ptr, 2); /* write length */ |
icraggs | 1:7fa362fa563f | 152 | MQTTSNPacket_writeChar(&ptr, MQTTSN_WILLTOPICREQ); |
icraggs | 0:c524a894b5e8 | 153 | |
icraggs | 0:c524a894b5e8 | 154 | rc = ptr - buf; |
icraggs | 0:c524a894b5e8 | 155 | exit: |
icraggs | 0:c524a894b5e8 | 156 | FUNC_EXIT_RC(rc); |
icraggs | 0:c524a894b5e8 | 157 | return rc; |
icraggs | 0:c524a894b5e8 | 158 | } |
icraggs | 0:c524a894b5e8 | 159 | |
icraggs | 0:c524a894b5e8 | 160 | |
icraggs | 0:c524a894b5e8 | 161 | /** |
icraggs | 0:c524a894b5e8 | 162 | * Serializes a willmsgreq packet into the supplied buffer. |
icraggs | 0:c524a894b5e8 | 163 | * @param buf the buffer into which the packet will be serialized |
icraggs | 0:c524a894b5e8 | 164 | * @param buflen the length in bytes of the supplied buffer |
icraggs | 0:c524a894b5e8 | 165 | * @return serialized length, or error if 0 |
icraggs | 0:c524a894b5e8 | 166 | */ |
icraggs | 0:c524a894b5e8 | 167 | int MQTTSNSerialize_willmsgreq(unsigned char* buf, int buflen) |
icraggs | 0:c524a894b5e8 | 168 | { |
icraggs | 0:c524a894b5e8 | 169 | int rc = 0; |
icraggs | 0:c524a894b5e8 | 170 | unsigned char *ptr = buf; |
icraggs | 0:c524a894b5e8 | 171 | |
icraggs | 0:c524a894b5e8 | 172 | FUNC_ENTRY; |
icraggs | 0:c524a894b5e8 | 173 | if (buflen < 2) |
icraggs | 0:c524a894b5e8 | 174 | { |
icraggs | 0:c524a894b5e8 | 175 | rc = MQTTSNPACKET_BUFFER_TOO_SHORT; |
icraggs | 0:c524a894b5e8 | 176 | goto exit; |
icraggs | 0:c524a894b5e8 | 177 | } |
icraggs | 0:c524a894b5e8 | 178 | |
icraggs | 0:c524a894b5e8 | 179 | ptr += MQTTSNPacket_encode(ptr, 2); /* write length */ |
icraggs | 1:7fa362fa563f | 180 | MQTTSNPacket_writeChar(&ptr, MQTTSN_WILLMSGREQ); |
icraggs | 0:c524a894b5e8 | 181 | |
icraggs | 0:c524a894b5e8 | 182 | rc = ptr - buf; |
icraggs | 0:c524a894b5e8 | 183 | exit: |
icraggs | 0:c524a894b5e8 | 184 | FUNC_EXIT_RC(rc); |
icraggs | 0:c524a894b5e8 | 185 | return rc; |
icraggs | 0:c524a894b5e8 | 186 | } |
icraggs | 0:c524a894b5e8 | 187 | |
icraggs | 0:c524a894b5e8 | 188 | |
icraggs | 0:c524a894b5e8 | 189 | |
icraggs | 0:c524a894b5e8 | 190 | /** |
icraggs | 0:c524a894b5e8 | 191 | * Deserializes the supplied (wire) buffer into pingreq data |
icraggs | 0:c524a894b5e8 | 192 | * @param clientID the connect data structure to be filled out |
icraggs | 0:c524a894b5e8 | 193 | * @param buf the raw buffer data, of the correct length determined by the remaining length field |
icraggs | 0:c524a894b5e8 | 194 | * @param len the length in bytes of the data in the supplied buffer |
icraggs | 0:c524a894b5e8 | 195 | * @return error code. 1 is success, 0 is failure |
icraggs | 0:c524a894b5e8 | 196 | */ |
icraggs | 0:c524a894b5e8 | 197 | int MQTTSNDeserialize_pingreq(MQTTSNString* clientID, unsigned char* buf, int len) |
icraggs | 0:c524a894b5e8 | 198 | { |
icraggs | 0:c524a894b5e8 | 199 | unsigned char* curdata = buf; |
icraggs | 0:c524a894b5e8 | 200 | unsigned char* enddata = &buf[len]; |
icraggs | 0:c524a894b5e8 | 201 | int rc = 0; |
icraggs | 0:c524a894b5e8 | 202 | int mylen = 0; |
icraggs | 0:c524a894b5e8 | 203 | |
icraggs | 0:c524a894b5e8 | 204 | FUNC_ENTRY; |
icraggs | 0:c524a894b5e8 | 205 | curdata += (rc = MQTTSNPacket_decode(curdata, len, &mylen)); /* read length */ |
icraggs | 0:c524a894b5e8 | 206 | enddata = buf + mylen; |
icraggs | 0:c524a894b5e8 | 207 | if (enddata - curdata < 1) |
icraggs | 0:c524a894b5e8 | 208 | goto exit; |
icraggs | 0:c524a894b5e8 | 209 | |
icraggs | 1:7fa362fa563f | 210 | if (MQTTSNPacket_readChar(&curdata) != MQTTSN_PINGREQ) |
icraggs | 0:c524a894b5e8 | 211 | goto exit; |
icraggs | 0:c524a894b5e8 | 212 | |
icraggs | 0:c524a894b5e8 | 213 | if (!readMQTTSNString(clientID, &curdata, enddata)) |
icraggs | 0:c524a894b5e8 | 214 | goto exit; |
icraggs | 0:c524a894b5e8 | 215 | |
icraggs | 0:c524a894b5e8 | 216 | rc = 1; |
icraggs | 0:c524a894b5e8 | 217 | exit: |
icraggs | 0:c524a894b5e8 | 218 | FUNC_EXIT_RC(rc); |
icraggs | 0:c524a894b5e8 | 219 | return rc; |
icraggs | 0:c524a894b5e8 | 220 | } |
icraggs | 0:c524a894b5e8 | 221 | |
icraggs | 0:c524a894b5e8 | 222 | |
icraggs | 0:c524a894b5e8 | 223 | /** |
icraggs | 0:c524a894b5e8 | 224 | * Serializes a pingresp packet into the supplied buffer. |
icraggs | 0:c524a894b5e8 | 225 | * @param buf the buffer into which the packet will be serialized |
icraggs | 0:c524a894b5e8 | 226 | * @param buflen the length in bytes of the supplied buffer |
icraggs | 0:c524a894b5e8 | 227 | * @return serialized length, or error if 0 |
icraggs | 0:c524a894b5e8 | 228 | */ |
icraggs | 0:c524a894b5e8 | 229 | int MQTTSNSerialize_pingresp(unsigned char* buf, int buflen) |
icraggs | 0:c524a894b5e8 | 230 | { |
icraggs | 0:c524a894b5e8 | 231 | int rc = 0; |
icraggs | 0:c524a894b5e8 | 232 | unsigned char *ptr = buf; |
icraggs | 0:c524a894b5e8 | 233 | |
icraggs | 0:c524a894b5e8 | 234 | FUNC_ENTRY; |
icraggs | 0:c524a894b5e8 | 235 | if (buflen < 2) |
icraggs | 0:c524a894b5e8 | 236 | { |
icraggs | 0:c524a894b5e8 | 237 | rc = MQTTSNPACKET_BUFFER_TOO_SHORT; |
icraggs | 0:c524a894b5e8 | 238 | goto exit; |
icraggs | 0:c524a894b5e8 | 239 | } |
icraggs | 0:c524a894b5e8 | 240 | |
icraggs | 0:c524a894b5e8 | 241 | ptr += MQTTSNPacket_encode(ptr, 2); /* write length */ |
icraggs | 1:7fa362fa563f | 242 | MQTTSNPacket_writeChar(&ptr, MQTTSN_PINGRESP); |
icraggs | 0:c524a894b5e8 | 243 | |
icraggs | 0:c524a894b5e8 | 244 | rc = ptr - buf; |
icraggs | 0:c524a894b5e8 | 245 | exit: |
icraggs | 0:c524a894b5e8 | 246 | FUNC_EXIT_RC(rc); |
icraggs | 0:c524a894b5e8 | 247 | return rc; |
icraggs | 0:c524a894b5e8 | 248 | } |
icraggs | 0:c524a894b5e8 | 249 | |
icraggs | 0:c524a894b5e8 | 250 | |
icraggs | 0:c524a894b5e8 | 251 | /** |
icraggs | 0:c524a894b5e8 | 252 | * Deserializes the supplied (wire) buffer into willtopic or willtopicupd data structure |
icraggs | 0:c524a894b5e8 | 253 | * @param data the connect data structure to be filled out |
icraggs | 0:c524a894b5e8 | 254 | * @param buf the raw buffer data, of the correct length determined by the remaining length field |
icraggs | 0:c524a894b5e8 | 255 | * @param len the length in bytes of the data in the supplied buffer |
icraggs | 0:c524a894b5e8 | 256 | * @return error code. 1 is success, 0 is failure |
icraggs | 0:c524a894b5e8 | 257 | */ |
icraggs | 0:c524a894b5e8 | 258 | int MQTTSNDeserialize_willtopic1(int *willQoS, unsigned char *willRetain, MQTTSNString* willTopic, unsigned char* buf, int len, |
icraggs | 0:c524a894b5e8 | 259 | enum MQTTSN_msgTypes packet_type) |
icraggs | 0:c524a894b5e8 | 260 | { |
icraggs | 0:c524a894b5e8 | 261 | MQTTSNFlags flags = {0}; |
icraggs | 0:c524a894b5e8 | 262 | unsigned char* curdata = buf; |
icraggs | 0:c524a894b5e8 | 263 | unsigned char* enddata = &buf[len]; |
icraggs | 0:c524a894b5e8 | 264 | int rc = 0; |
icraggs | 0:c524a894b5e8 | 265 | int mylen = 0; |
icraggs | 0:c524a894b5e8 | 266 | |
icraggs | 0:c524a894b5e8 | 267 | FUNC_ENTRY; |
icraggs | 0:c524a894b5e8 | 268 | curdata += (rc = MQTTSNPacket_decode(curdata, len, &mylen)); /* read length */ |
icraggs | 0:c524a894b5e8 | 269 | enddata = buf + mylen; |
icraggs | 0:c524a894b5e8 | 270 | if (enddata > buf + len) |
icraggs | 0:c524a894b5e8 | 271 | goto exit; |
icraggs | 0:c524a894b5e8 | 272 | |
icraggs | 1:7fa362fa563f | 273 | if (MQTTSNPacket_readChar(&curdata) != packet_type) |
icraggs | 0:c524a894b5e8 | 274 | goto exit; |
icraggs | 0:c524a894b5e8 | 275 | |
icraggs | 1:7fa362fa563f | 276 | flags.all = MQTTSNPacket_readChar(&curdata); |
icraggs | 0:c524a894b5e8 | 277 | *willQoS = flags.bits.QoS; |
icraggs | 0:c524a894b5e8 | 278 | *willRetain = flags.bits.retain; |
icraggs | 0:c524a894b5e8 | 279 | |
icraggs | 0:c524a894b5e8 | 280 | if (!readMQTTSNString(willTopic, &curdata, enddata)) |
icraggs | 0:c524a894b5e8 | 281 | goto exit; |
icraggs | 0:c524a894b5e8 | 282 | |
icraggs | 0:c524a894b5e8 | 283 | rc = 1; |
icraggs | 0:c524a894b5e8 | 284 | exit: |
icraggs | 0:c524a894b5e8 | 285 | FUNC_EXIT_RC(rc); |
icraggs | 0:c524a894b5e8 | 286 | return rc; |
icraggs | 0:c524a894b5e8 | 287 | } |
icraggs | 0:c524a894b5e8 | 288 | |
icraggs | 0:c524a894b5e8 | 289 | |
icraggs | 0:c524a894b5e8 | 290 | /** |
icraggs | 0:c524a894b5e8 | 291 | * Deserializes the supplied (wire) buffer into willtopic data structure |
icraggs | 0:c524a894b5e8 | 292 | * @param data the connect data structure to be filled out |
icraggs | 0:c524a894b5e8 | 293 | * @param buf the raw buffer data, of the correct length determined by the remaining length field |
icraggs | 0:c524a894b5e8 | 294 | * @param len the length in bytes of the data in the supplied buffer |
icraggs | 0:c524a894b5e8 | 295 | * @return error code. 1 is success, 0 is failure |
icraggs | 0:c524a894b5e8 | 296 | */ |
icraggs | 0:c524a894b5e8 | 297 | int MQTTSNDeserialize_willtopic(int *willQoS, unsigned char *willRetain, MQTTSNString* willTopic, unsigned char* buf, int len) |
icraggs | 0:c524a894b5e8 | 298 | { |
icraggs | 0:c524a894b5e8 | 299 | return MQTTSNDeserialize_willtopic1(willQoS, willRetain, willTopic, buf, len, MQTTSN_WILLTOPIC); |
icraggs | 0:c524a894b5e8 | 300 | } |
icraggs | 0:c524a894b5e8 | 301 | |
icraggs | 0:c524a894b5e8 | 302 | /** |
icraggs | 0:c524a894b5e8 | 303 | * Deserializes the supplied (wire) buffer into willtopic data structure |
icraggs | 0:c524a894b5e8 | 304 | * @param data the connect data structure to be filled out |
icraggs | 0:c524a894b5e8 | 305 | * @param buf the raw buffer data, of the correct length determined by the remaining length field |
icraggs | 0:c524a894b5e8 | 306 | * @param len the length in bytes of the data in the supplied buffer |
icraggs | 0:c524a894b5e8 | 307 | * @return error code. 1 is success, 0 is failure |
icraggs | 0:c524a894b5e8 | 308 | */ |
icraggs | 0:c524a894b5e8 | 309 | int MQTTSNDeserialize_willtopicupd(int *willQoS, unsigned char *willRetain, MQTTSNString* willTopic, unsigned char* buf, int len) |
icraggs | 0:c524a894b5e8 | 310 | { |
icraggs | 0:c524a894b5e8 | 311 | return MQTTSNDeserialize_willtopic1(willQoS, willRetain, willTopic, buf, len, MQTTSN_WILLTOPICUPD); |
icraggs | 0:c524a894b5e8 | 312 | } |
icraggs | 0:c524a894b5e8 | 313 | |
icraggs | 0:c524a894b5e8 | 314 | |
icraggs | 0:c524a894b5e8 | 315 | /** |
icraggs | 0:c524a894b5e8 | 316 | * Deserializes the supplied (wire) buffer into willmsg or willmsgupd data |
icraggs | 0:c524a894b5e8 | 317 | * @param willMsg the will message to be retrieved |
icraggs | 0:c524a894b5e8 | 318 | * @param buf the raw buffer data, of the correct length determined by the remaining length field |
icraggs | 0:c524a894b5e8 | 319 | * @param len the length in bytes of the data in the supplied buffer |
icraggs | 0:c524a894b5e8 | 320 | * @return error code. 1 is success, 0 is failure |
icraggs | 0:c524a894b5e8 | 321 | */ |
icraggs | 0:c524a894b5e8 | 322 | int MQTTSNDeserialize_willmsg1(MQTTSNString* willMsg, unsigned char* buf, int len, enum MQTTSN_msgTypes packet_type) |
icraggs | 0:c524a894b5e8 | 323 | { |
icraggs | 0:c524a894b5e8 | 324 | unsigned char* curdata = buf; |
icraggs | 0:c524a894b5e8 | 325 | unsigned char* enddata = &buf[len]; |
icraggs | 0:c524a894b5e8 | 326 | int rc = 0; |
icraggs | 0:c524a894b5e8 | 327 | int mylen = 0; |
icraggs | 0:c524a894b5e8 | 328 | |
icraggs | 0:c524a894b5e8 | 329 | FUNC_ENTRY; |
icraggs | 0:c524a894b5e8 | 330 | curdata += (rc = MQTTSNPacket_decode(curdata, len, &mylen)); /* read length */ |
icraggs | 0:c524a894b5e8 | 331 | enddata = buf + mylen; |
icraggs | 0:c524a894b5e8 | 332 | if (enddata > buf + len) |
icraggs | 0:c524a894b5e8 | 333 | goto exit; |
icraggs | 0:c524a894b5e8 | 334 | |
icraggs | 1:7fa362fa563f | 335 | if (MQTTSNPacket_readChar(&curdata) != packet_type) |
icraggs | 0:c524a894b5e8 | 336 | goto exit; |
icraggs | 0:c524a894b5e8 | 337 | |
icraggs | 0:c524a894b5e8 | 338 | if (!readMQTTSNString(willMsg, &curdata, enddata)) |
icraggs | 0:c524a894b5e8 | 339 | goto exit; |
icraggs | 0:c524a894b5e8 | 340 | |
icraggs | 0:c524a894b5e8 | 341 | rc = 1; |
icraggs | 0:c524a894b5e8 | 342 | exit: |
icraggs | 0:c524a894b5e8 | 343 | FUNC_EXIT_RC(rc); |
icraggs | 0:c524a894b5e8 | 344 | return rc; |
icraggs | 0:c524a894b5e8 | 345 | } |
icraggs | 0:c524a894b5e8 | 346 | |
icraggs | 0:c524a894b5e8 | 347 | |
icraggs | 0:c524a894b5e8 | 348 | /** |
icraggs | 0:c524a894b5e8 | 349 | * Deserializes the supplied (wire) buffer into willmsg data |
icraggs | 0:c524a894b5e8 | 350 | * @param willMsg the will message to be retrieved |
icraggs | 0:c524a894b5e8 | 351 | * @param buf the raw buffer data, of the correct length determined by the remaining length field |
icraggs | 0:c524a894b5e8 | 352 | * @param len the length in bytes of the data in the supplied buffer |
icraggs | 0:c524a894b5e8 | 353 | * @return error code. 1 is success, 0 is failure |
icraggs | 0:c524a894b5e8 | 354 | */ |
icraggs | 0:c524a894b5e8 | 355 | int MQTTSNDeserialize_willmsg(MQTTSNString* willMsg, unsigned char* buf, int len) |
icraggs | 0:c524a894b5e8 | 356 | { |
icraggs | 0:c524a894b5e8 | 357 | return MQTTSNDeserialize_willmsg1(willMsg, buf, len, MQTTSN_WILLMSG); |
icraggs | 0:c524a894b5e8 | 358 | } |
icraggs | 0:c524a894b5e8 | 359 | |
icraggs | 0:c524a894b5e8 | 360 | /** |
icraggs | 0:c524a894b5e8 | 361 | * Deserializes the supplied (wire) buffer into willmsgupd data |
icraggs | 0:c524a894b5e8 | 362 | * @param willMsg the will message to be retrieved |
icraggs | 0:c524a894b5e8 | 363 | * @param buf the raw buffer data, of the correct length determined by the remaining length field |
icraggs | 0:c524a894b5e8 | 364 | * @param len the length in bytes of the data in the supplied buffer |
icraggs | 0:c524a894b5e8 | 365 | * @return error code. 1 is success, 0 is failure |
icraggs | 0:c524a894b5e8 | 366 | */ |
icraggs | 0:c524a894b5e8 | 367 | int MQTTSNDeserialize_willmsgupd(MQTTSNString* willMsg, unsigned char* buf, int len) |
icraggs | 0:c524a894b5e8 | 368 | { |
icraggs | 0:c524a894b5e8 | 369 | return MQTTSNDeserialize_willmsg1(willMsg, buf, len, MQTTSN_WILLMSGUPD); |
icraggs | 0:c524a894b5e8 | 370 | } |
icraggs | 0:c524a894b5e8 | 371 | |
icraggs | 0:c524a894b5e8 | 372 | |
icraggs | 0:c524a894b5e8 | 373 | /** |
icraggs | 0:c524a894b5e8 | 374 | * Serializes the willtopicresp packet into the supplied buffer. |
icraggs | 0:c524a894b5e8 | 375 | * @param buf the buffer into which the packet will be serialized |
icraggs | 0:c524a894b5e8 | 376 | * @param buflen the length in bytes of the supplied buffer |
icraggs | 0:c524a894b5e8 | 377 | * @param rc the integer return code to be used |
icraggs | 0:c524a894b5e8 | 378 | * @return serialized length, or error if 0 |
icraggs | 0:c524a894b5e8 | 379 | */ |
icraggs | 0:c524a894b5e8 | 380 | int MQTTSNSerialize_willtopicresp(unsigned char* buf, int buflen, int resp_rc) |
icraggs | 0:c524a894b5e8 | 381 | { |
icraggs | 0:c524a894b5e8 | 382 | int rc = 0; |
icraggs | 0:c524a894b5e8 | 383 | unsigned char *ptr = buf; |
icraggs | 0:c524a894b5e8 | 384 | |
icraggs | 0:c524a894b5e8 | 385 | FUNC_ENTRY; |
icraggs | 0:c524a894b5e8 | 386 | if (buflen < 3) |
icraggs | 0:c524a894b5e8 | 387 | { |
icraggs | 0:c524a894b5e8 | 388 | rc = MQTTSNPACKET_BUFFER_TOO_SHORT; |
icraggs | 0:c524a894b5e8 | 389 | goto exit; |
icraggs | 0:c524a894b5e8 | 390 | } |
icraggs | 0:c524a894b5e8 | 391 | |
icraggs | 0:c524a894b5e8 | 392 | ptr += MQTTSNPacket_encode(ptr, 3); /* write length */ |
icraggs | 1:7fa362fa563f | 393 | MQTTSNPacket_writeChar(&ptr, MQTTSN_WILLTOPICRESP); |
icraggs | 1:7fa362fa563f | 394 | MQTTSNPacket_writeChar(&ptr, resp_rc); |
icraggs | 0:c524a894b5e8 | 395 | |
icraggs | 0:c524a894b5e8 | 396 | rc = ptr - buf; |
icraggs | 0:c524a894b5e8 | 397 | exit: |
icraggs | 0:c524a894b5e8 | 398 | FUNC_EXIT_RC(rc); |
icraggs | 0:c524a894b5e8 | 399 | return rc; |
icraggs | 0:c524a894b5e8 | 400 | } |
icraggs | 0:c524a894b5e8 | 401 | |
icraggs | 0:c524a894b5e8 | 402 | |
icraggs | 0:c524a894b5e8 | 403 | /** |
icraggs | 0:c524a894b5e8 | 404 | * Serializes the willmsgresp packet into the supplied buffer. |
icraggs | 0:c524a894b5e8 | 405 | * @param buf the buffer into which the packet will be serialized |
icraggs | 0:c524a894b5e8 | 406 | * @param buflen the length in bytes of the supplied buffer |
icraggs | 0:c524a894b5e8 | 407 | * @param rc the integer return code to be used |
icraggs | 0:c524a894b5e8 | 408 | * @return serialized length, or error if 0 |
icraggs | 0:c524a894b5e8 | 409 | */ |
icraggs | 0:c524a894b5e8 | 410 | int MQTTSNSerialize_willmsgresp(unsigned char* buf, int buflen, int resp_rc) |
icraggs | 0:c524a894b5e8 | 411 | { |
icraggs | 0:c524a894b5e8 | 412 | int rc = 0; |
icraggs | 0:c524a894b5e8 | 413 | unsigned char *ptr = buf; |
icraggs | 0:c524a894b5e8 | 414 | |
icraggs | 0:c524a894b5e8 | 415 | FUNC_ENTRY; |
icraggs | 0:c524a894b5e8 | 416 | if (buflen < 3) |
icraggs | 0:c524a894b5e8 | 417 | { |
icraggs | 0:c524a894b5e8 | 418 | rc = MQTTSNPACKET_BUFFER_TOO_SHORT; |
icraggs | 0:c524a894b5e8 | 419 | goto exit; |
icraggs | 0:c524a894b5e8 | 420 | } |
icraggs | 0:c524a894b5e8 | 421 | |
icraggs | 0:c524a894b5e8 | 422 | ptr += MQTTSNPacket_encode(ptr, 3); /* write length */ |
icraggs | 1:7fa362fa563f | 423 | MQTTSNPacket_writeChar(&ptr, MQTTSN_WILLMSGRESP); |
icraggs | 1:7fa362fa563f | 424 | MQTTSNPacket_writeChar(&ptr, resp_rc); |
icraggs | 0:c524a894b5e8 | 425 | |
icraggs | 0:c524a894b5e8 | 426 | rc = ptr - buf; |
icraggs | 0:c524a894b5e8 | 427 | exit: |
icraggs | 0:c524a894b5e8 | 428 | FUNC_EXIT_RC(rc); |
icraggs | 0:c524a894b5e8 | 429 | return rc; |
icraggs | 0:c524a894b5e8 | 430 | } |
icraggs | 0:c524a894b5e8 | 431 |