mirror of
https://github.com/g4klx/ircDDBGateway.git
synced 2025-12-06 05:32:02 +01:00
274 lines
6.6 KiB
C++
274 lines
6.6 KiB
C++
/*
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* Copyright (C) 2010-2015,2018,2019 by Jonathan Naylor G4KLX
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include "DPlusAuthenticator.h"
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#include "UDPReaderWriter.h"
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#include "DStarDefines.h"
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#include "Utils.h"
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#include "Defs.h"
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const wxString OPENDSTAR_HOSTNAME = wxT("auth.dstargateway.org");
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const unsigned int OPENDSTAR_PORT = 20001U;
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const unsigned int TCP_TIMEOUT = 10U;
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CDPlusAuthenticator::CDPlusAuthenticator(const wxString& loginCallsign, const wxString& gatewayCallsign, const wxString& address, CCacheManager* cache) :
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wxThread(wxTHREAD_JOINABLE),
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m_loginCallsign(loginCallsign),
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m_gatewayCallsign(gatewayCallsign),
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m_address(address),
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m_cache(cache),
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m_timer(1U, 6U * 3600U), // 6 hours
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m_killed(false)
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{
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wxASSERT(!loginCallsign.IsEmpty());
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wxASSERT(!gatewayCallsign.IsEmpty());
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wxASSERT(cache != NULL);
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m_gatewayCallsign.Truncate(LONG_CALLSIGN_LENGTH - 1U);
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m_loginCallsign.Trim();
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m_gatewayCallsign.Trim();
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if (m_loginCallsign.IsEmpty())
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m_loginCallsign = m_gatewayCallsign;
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}
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CDPlusAuthenticator::~CDPlusAuthenticator()
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{
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}
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void CDPlusAuthenticator::start()
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{
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Create();
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Run();
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}
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void* CDPlusAuthenticator::Entry()
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{
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wxLogMessage(wxT("Starting the D-Plus Authenticator thread"));
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authenticate(m_loginCallsign, OPENDSTAR_HOSTNAME, OPENDSTAR_PORT, '2', true);
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m_timer.start();
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try {
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while (!m_killed) {
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if (m_timer.hasExpired()) {
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authenticate(m_loginCallsign, OPENDSTAR_HOSTNAME, OPENDSTAR_PORT, '2', true);
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m_timer.start();
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}
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Sleep(1000UL);
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m_timer.clock();
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}
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}
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catch (std::exception& e) {
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wxString message(e.what(), wxConvLocal);
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wxLogError(wxT("Exception raised in the D-Plus Authenticator thread - \"%s\""), message.c_str());
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}
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catch (...) {
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wxLogError(wxT("Unknown exception raised in the D-Plus Authenticator thread"));
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}
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wxLogMessage(wxT("Stopping the D-Plus Authenticator thread"));
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return NULL;
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}
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void CDPlusAuthenticator::stop()
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{
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m_killed = true;
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Wait();
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}
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bool CDPlusAuthenticator::authenticate(const wxString& callsign, const wxString& hostname, unsigned int port, unsigned char id, bool writeToCache)
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{
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CTCPReaderWriterClient socket(hostname, port, m_address);
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bool ret = socket.open();
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if (!ret)
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return false;
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unsigned char* buffer = new unsigned char[4096U];
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::memset(buffer, ' ', 56U);
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buffer[0U] = 0x38U;
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buffer[1U] = 0xC0U;
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buffer[2U] = 0x01U;
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buffer[3U] = 0x00U;
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for (unsigned int i = 0U; i < callsign.Len(); i++)
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buffer[i + 4U] = callsign.GetChar(i);
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buffer[12U] = 'D';
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buffer[13U] = 'V';
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buffer[14U] = '0';
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buffer[15U] = '1';
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buffer[16U] = '9';
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buffer[17U] = '9';
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buffer[18U] = '9';
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buffer[19U] = '9';
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buffer[28U] = 'W';
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buffer[29U] = '7';
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buffer[30U] = 'I';
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buffer[31U] = 'B';
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buffer[32U] = id;
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buffer[40U] = 'D';
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buffer[41U] = 'H';
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buffer[42U] = 'S';
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buffer[43U] = '0';
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buffer[44U] = '2';
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buffer[45U] = '5';
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buffer[46U] = '7';
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ret = socket.write(buffer, 56U);
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if (!ret) {
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socket.close();
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delete[] buffer;
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return false;
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}
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ret = read(socket, buffer + 0U, 2U);
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while (ret) {
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unsigned int len = (buffer[1U] & 0x0FU) * 256U + buffer[0U];
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// Ensure that we get exactly len - 2U bytes from the TCP stream
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ret = read(socket, buffer + 2U, len - 2U);
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if (!ret) {
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wxLogError(wxT("Short read from %s:%u"), hostname.c_str(), port);
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break;
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}
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if ((buffer[1U] & 0xC0U) != 0xC0U || buffer[2U] != 0x01U) {
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wxLogError(wxT("Invalid packet received from %s:%u"), hostname.c_str(), port);
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CUtils::dump(wxT("Details:"), buffer, len);
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break;
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}
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for (unsigned int i = 8U; (i + 25U) < len; i += 26U) {
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wxString address = wxString((char*)(buffer + i + 0U), wxConvLocal, 16U);
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wxString name = wxString((char*)(buffer + i + 16U), wxConvLocal, LONG_CALLSIGN_LENGTH);
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address.Trim();
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name.Trim();
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// Get the active flag
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bool active = (buffer[i + 25U] & 0x80U) == 0x80U;
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// An empty name or IP address or an inactive gateway/reflector is not written out
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if (address.Len() > 0U && name.Len() > 0U && !name.Left(3U).IsSameAs(wxT("XRF")) && active && writeToCache){
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if (name.Left(3U).IsSameAs(wxT("REF")))
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wxLogMessage(wxT("D-Plus: %s\t%s"), name.c_str(), address.c_str());
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name.Append(wxT(" "));
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name.Truncate(LONG_CALLSIGN_LENGTH - 1U);
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name.Append(wxT("G"));
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m_cache->updateGateway(name, address, DP_DPLUS, false, true);
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}
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}
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ret = read(socket, buffer + 0U, 2U);
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}
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wxLogMessage(wxT("Registered with %s using callsign %s"), hostname.c_str(), callsign.c_str());
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socket.close();
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delete[] buffer;
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return true;
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}
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bool CDPlusAuthenticator::poll(const wxString& callsign, const wxString& hostname, unsigned int port, unsigned char id)
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{
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CUDPReaderWriter socket(m_address, 0U);
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bool ret = socket.open();
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if (!ret)
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return false;
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unsigned char buffer[56U];
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::memset(buffer, ' ', 56U);
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buffer[0U] = 0x38U;
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buffer[1U] = 0x20U;
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buffer[2U] = 0x01U;
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buffer[3U] = 0x01U;
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for (unsigned int i = 0U; i < callsign.Len(); i++)
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buffer[i + 4U] = callsign.GetChar(i);
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buffer[12U] = 'D';
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buffer[13U] = 'V';
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buffer[14U] = '0';
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buffer[15U] = '1';
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buffer[16U] = '9';
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buffer[17U] = '9';
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buffer[18U] = '9';
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buffer[19U] = '9';
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for (unsigned int i = 0U; i < callsign.Len(); i++)
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buffer[i + 20U] = callsign.GetChar(i);
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buffer[28U] = 'W';
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buffer[29U] = '7';
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buffer[30U] = 'I';
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buffer[31U] = 'B';
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buffer[32U] = id;
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buffer[40U] = 'D';
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buffer[41U] = 'H';
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buffer[42U] = 'S';
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buffer[43U] = '0';
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buffer[44U] = '2';
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buffer[45U] = '5';
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buffer[46U] = '7';
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in_addr address = socket.lookup(hostname);
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if (address.s_addr == INADDR_NONE) {
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socket.close();
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return false;
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}
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ret = socket.write(buffer, 56U, address, port);
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socket.close();
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return ret;
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}
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bool CDPlusAuthenticator::read(CTCPReaderWriterClient &socket, unsigned char *buffer, unsigned int len) const
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{
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unsigned int offset = 0U;
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do {
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int n = socket.read(buffer + offset, len - offset, TCP_TIMEOUT);
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if (n < 0)
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return false;
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offset += n;
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} while ((len - offset) > 0U);
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return true;
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}
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