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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;
-}
-
-
