Port to C027 (using AppShield and Ethernet)
Dependencies: C12832 EthernetInterface LM75B MMA7660 MQTT mbed-rtos mbed
Fork of IBMIoTClientEthernetExample by
Diff: MQTT/MQTTPacket/MQTTSubscribeClient.c
- Revision:
- 9:58eb378727d9
- Parent:
- 8:80d49dd91542
- Child:
- 10:0b5e0dfee08e
--- a/MQTT/MQTTPacket/MQTTSubscribeClient.c Wed Oct 01 13:27:35 2014 +0000 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,137 +0,0 @@ -/******************************************************************************* - * 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[], int 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, int* count, int 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; -} - -