You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
102 lines
3.1 KiB
102 lines
3.1 KiB
/*
|
|
* Copyright (C) 2010,2012,2018 by Jonathan Naylor G4KLX
|
|
* Copyright (C) 2021-2022 by Geoffrey Merck F4FXL / KC3FRA
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
|
|
*/
|
|
|
|
|
|
#include <cstring>
|
|
#include <cassert>
|
|
#include <boost/algorithm/string.hpp>
|
|
#include <vector>
|
|
#include <algorithm>
|
|
#include <cstdlib>
|
|
|
|
#include "RSMS1AMessageCollector.h"
|
|
#include "StringUtils.h"
|
|
#include "Log.h"
|
|
#include "Utils.h"
|
|
#include "APRSUtils.h"
|
|
#include "RSMS1AMessageBuilder.h"
|
|
|
|
|
|
const unsigned int APRS_CSUM_LENGTH = 4U;
|
|
|
|
CRSMS1AMessageCollector::CRSMS1AMessageCollector() :
|
|
CSentenceCollector(SLOW_DATA_TYPE_GPS, "$$Msg", '\x0D')
|
|
{
|
|
|
|
}
|
|
|
|
bool CRSMS1AMessageCollector::isValidSentence(const std::string& sentence)
|
|
{
|
|
return isValidMsg(sentence);
|
|
}
|
|
|
|
bool CRSMS1AMessageCollector::isValidMsg(const std::string& msg)
|
|
{
|
|
CLog::logDebug("RS-MS1A");
|
|
// checking validity involves parsing, so we do minumum checks here. Big chekc done in getDataInt
|
|
return !msg.empty() && boost::starts_with(msg, "$$Msg");
|
|
}
|
|
|
|
unsigned int CRSMS1AMessageCollector::getDataInt(unsigned char * data, unsigned int length)
|
|
{
|
|
if(data == nullptr || length == 0U)
|
|
return 0U;
|
|
|
|
std::string aprsFrame;
|
|
if(!getDataInt(aprsFrame))
|
|
return 0U;
|
|
|
|
auto aprsFrameLen = aprsFrame.length();
|
|
|
|
if(length < aprsFrameLen) {
|
|
CLog::logDebug("Not enough space to copy RSMS1A message frame");
|
|
return 0U;
|
|
}
|
|
|
|
for(unsigned int i = 0U; i < aprsFrameLen; i++){
|
|
data[i] = aprsFrame[i];
|
|
}
|
|
|
|
return aprsFrameLen;
|
|
}
|
|
|
|
bool CRSMS1AMessageCollector::getDataInt(std::string& data)
|
|
{
|
|
if(getSentence().empty())
|
|
return false;
|
|
|
|
std::string sender, recipient, body, sentence;
|
|
sentence = getSentence();
|
|
auto parseRes = CRSMS1AMessageBuilder::parseMessage(sender, recipient, body, sentence);
|
|
|
|
CUtils::dump(CStringUtils::string_format("RS-MS1A Message parsed with result %s", parseRes == RSMS_OK ? "OK" : (parseRes == RSMS_ERRONEOUS_MSG ? "Error in msg body" : "failed")).c_str(),
|
|
(unsigned char *)sentence.c_str(), sentence.length());
|
|
|
|
if(parseRes == RSMS_FAIL)
|
|
return false;
|
|
|
|
CAPRSUtils::dstarCallsignToAPRS(sender);
|
|
CAPRSUtils::dstarCallsignToAPRS(recipient);
|
|
recipient.resize(9U, ' ');
|
|
|
|
auto seqNum = rand() % 0xFFFFFU;
|
|
CStringUtils::string_format_in_place(data, "%s-5>APDPRS,DSTAR*::%s:%s{%05X", sender.c_str(), recipient.c_str(), body.c_str(), seqNum);
|
|
|
|
return true;
|
|
} |