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Move MQTTSNPacket into subdirectory

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This commit is contained in:
Ian Craggs
2015-04-09 16:40:04 +01:00
parent b73a6712c1
commit 44dc71a2b1
41 changed files with 1015 additions and 19 deletions
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126
MQTTSNPacket/src/MQTTSNSearchClient.c Normal file
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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 "MQTTSNPacket.h"
#include "StackTrace.h"
#include <string.h>
/**
* Deserializes the supplied (wire) buffer into advertise data
* @param gatewayid the returned gateway id
* @param duration the returned duration - the time interval until the next advertise will be sent
* @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 MQTTSNDeserialize_advertise(unsigned char* gatewayid, unsigned short* duration, unsigned char* buf, int buflen)
{
unsigned char* curdata = buf;
unsigned char* enddata = NULL;
int rc = 0;
int mylen = 0;
FUNC_ENTRY;
curdata += (rc = MQTTSNPacket_decode(curdata, buflen, &mylen)); /* read length */
enddata = buf + mylen;
if (enddata - curdata > buflen)
goto exit;
if (readChar(&curdata) != MQTTSN_ADVERTISE)
goto exit;
*gatewayid = readChar(&curdata);
*duration = readInt(&curdata);
rc = 1;
exit:
FUNC_EXIT_RC(rc);
return rc;
}
/**
* Serializes the supplied searchgw 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 radius the broadcast radius of this message
* @return the length of the serialized data. <= 0 indicates error
*/
int MQTTSNSerialize_searchgw(unsigned char* buf, int buflen, unsigned char radius)
{
unsigned char *ptr = buf;
int len = 0;
int rc = 0;
FUNC_ENTRY;
if ((len = MQTTSNPacket_len(2)) > buflen)
{
rc = MQTTSNPACKET_BUFFER_TOO_SHORT;
goto exit;
}
ptr += MQTTSNPacket_encode(ptr, len); /* write length */
writeChar(&ptr, MQTTSN_SEARCHGW); /* write message type */
writeChar(&ptr, radius);
rc = ptr - buf;
exit:
FUNC_EXIT_RC(rc);
return rc;
}
/**
* Deserializes the supplied (wire) buffer into gwinfo data
* @param gatewayid the returned gateway id
* @param gatewayaddress_len the optional returned length of the gateway address (0 if none)
* @param gatewayaddress the optional returned gateway address (set to NULL if none)
* @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 MQTTSNDeserialize_gwinfo(unsigned char* gatewayid, unsigned short* gatewayaddress_len,
unsigned char** gatewayaddress, unsigned char* buf, int buflen)
{
unsigned char* curdata = buf;
unsigned char* enddata = NULL;
int rc = 0;
int mylen = 0;
FUNC_ENTRY;
curdata += (rc = MQTTSNPacket_decode(curdata, buflen, &mylen)); /* read length */
enddata = buf + mylen;
if (enddata - curdata > buflen)
goto exit;
if (readChar(&curdata) != MQTTSN_GWINFO)
goto exit;
*gatewayid = readChar(&curdata);
*gatewayaddress_len = enddata - curdata;
*gatewayaddress = (gatewayaddress_len > 0) ? curdata : NULL;
rc = 1;
exit:
FUNC_EXIT_RC(rc);
return rc;
}