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This commit is contained in:
Ian Craggs
2014-07-16 15:26:13 +01:00
parent ddfd3233bd
commit 76a85ec06b
5 changed files with 240 additions and 2 deletions
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105
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>
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;
}
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;
}
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 = curdata;
rc = 1;
exit:
FUNC_EXIT_RC(rc);
return rc;
}