P25Clients/P25Gateway/Reflectors.cpp

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/*
* Copyright (C) 2016,2018 by Jonathan Naylor G4KLX
*
* 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 "Reflectors.h"
#include "Log.h"
#include <algorithm>
#include <functional>
#include <cstdio>
#include <cassert>
#include <cstring>
#include <cctype>
CReflectors::CReflectors(const std::string& hostsFile1, const std::string& hostsFile2, unsigned int reloadTime) :
m_hostsFile1(hostsFile1),
m_hostsFile2(hostsFile2),
m_parrotAddress(),
m_parrotPort(0U),
m_reflectors(),
m_timer(1000U, reloadTime * 60U)
{
if (reloadTime > 0U)
m_timer.start();
}
CReflectors::~CReflectors()
{
for (std::vector<CP25Reflector*>::iterator it = m_reflectors.begin(); it != m_reflectors.end(); ++it)
delete *it;
m_reflectors.clear();
}
void CReflectors::setParrot(const std::string& address, unsigned int port)
{
m_parrotAddress = address;
m_parrotPort = port;
}
bool CReflectors::load()
{
// Clear out the old reflector list
for (std::vector<CP25Reflector*>::iterator it = m_reflectors.begin(); it != m_reflectors.end(); ++it)
delete *it;
m_reflectors.clear();
FILE* fp = ::fopen(m_hostsFile1.c_str(), "rt");
if (fp != NULL) {
char buffer[100U];
while (::fgets(buffer, 100U, fp) != NULL) {
if (buffer[0U] == '#')
continue;
char* p1 = ::strtok(buffer, " \t\r\n");
char* p2 = ::strtok(NULL, " \t\r\n");
char* p3 = ::strtok(NULL, " \t\r\n");
if (p1 != NULL && p2 != NULL && p3 != NULL) {
std::string host = std::string(p2);
in_addr address = CUDPSocket::lookup(host);
if (address.s_addr != INADDR_NONE) {
CP25Reflector* refl = new CP25Reflector;
refl->m_id = (unsigned int)::atoi(p1);
refl->m_address = address;
refl->m_port = (unsigned int)::atoi(p3);
m_reflectors.push_back(refl);
}
}
}
::fclose(fp);
}
fp = ::fopen(m_hostsFile2.c_str(), "rt");
if (fp != NULL) {
char buffer[100U];
while (::fgets(buffer, 100U, fp) != NULL) {
if (buffer[0U] == '#')
continue;
char* p1 = ::strtok(buffer, " \t\r\n");
char* p2 = ::strtok(NULL, " \t\r\n");
char* p3 = ::strtok(NULL, " \t\r\n");
if (p1 != NULL && p2 != NULL && p3 != NULL) {
// Don't allow duplicate reflector ids from the secondary hosts file.
unsigned int id = (unsigned int)::atoi(p1);
if (find(id) == NULL) {
std::string host = std::string(p2);
in_addr address = CUDPSocket::lookup(host);
if (address.s_addr != INADDR_NONE) {
CP25Reflector* refl = new CP25Reflector;
refl->m_id = id;
refl->m_address = address;
refl->m_port = (unsigned int)::atoi(p3);
m_reflectors.push_back(refl);
}
}
}
}
::fclose(fp);
}
size_t size = m_reflectors.size();
LogInfo("Loaded %u P25 reflectors", size);
// Add the Parrot entry
if (m_parrotPort > 0U) {
CP25Reflector* refl = new CP25Reflector;
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refl->m_id = 10U;
refl->m_address = CUDPSocket::lookup(m_parrotAddress);
refl->m_port = m_parrotPort;
m_reflectors.push_back(refl);
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LogInfo("Loaded P25 parrot (TG%u)", refl->m_id);
}
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size = m_reflectors.size();
if (size == 0U)
return false;
return true;
}
CP25Reflector* CReflectors::find(unsigned int id)
{
for (std::vector<CP25Reflector*>::iterator it = m_reflectors.begin(); it != m_reflectors.end(); ++it) {
if (id == (*it)->m_id)
return *it;
}
return NULL;
}
void CReflectors::clock(unsigned int ms)
{
m_timer.clock(ms);
if (m_timer.isRunning() && m_timer.hasExpired()) {
load();
m_timer.start();
}
}