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/*
* This file is part of nzbget. See <http://nzbget.net>.
*
* Copyright (C) 2005 Bo Cordes Petersen <placebodk@sourceforge.net>
* Copyright (C) 2007-2016 Andrey Prygunkov <hugbug@users.sourceforge.net>
*
* 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, see <http://www.gnu.org/licenses/>.
*/
#include "nzbget.h"
#include "RemoteServer.h"
#include "BinRpc.h"
#include "WebServer.h"
#include "Log.h"
#include "Options.h"
#include "FileSystem.h"
//*****************************************************************
// RemoteServer
void RemoteServer::Run()
{
debug("Entering RemoteServer-loop");
#ifndef DISABLE_TLS
if (m_tls)
{
if (strlen(g_Options->GetSecureCert()) == 0 || !FileSystem::FileExists(g_Options->GetSecureCert()))
{
error("Could not initialize TLS, secure certificate is not configured or the cert-file was not found. Check option <SecureCert>");
return;
}
if (strlen(g_Options->GetSecureKey()) == 0 || !FileSystem::FileExists(g_Options->GetSecureKey()))
{
error("Could not initialize TLS, secure key is not configured or the key-file was not found. Check option <SecureKey>");
return;
}
}
#endif
while (!IsStopped())
{
bool bind = true;
if (!m_connection)
{
m_connection = std::make_unique<Connection>(g_Options->GetControlIp(),
m_tls ? g_Options->GetSecurePort() : g_Options->GetControlPort(),
m_tls);
m_connection->SetTimeout(g_Options->GetUrlTimeout());
m_connection->SetSuppressErrors(false);
bind = m_connection->Bind();
}
// Accept connections and store the new Connection
std::unique_ptr<Connection> acceptedConnection;
if (bind)
{
acceptedConnection = m_connection->Accept();
}
if (!bind || !acceptedConnection)
{
// Remote server could not bind or accept connection, waiting 1/2 sec and try again
if (IsStopped())
{
break;
}
m_connection.reset();
usleep(500 * 1000);
continue;
}
RequestProcessor* commandThread = new RequestProcessor();
commandThread->SetAutoDestroy(true);
commandThread->SetConnection(std::move(acceptedConnection));
#ifndef DISABLE_TLS
commandThread->SetTls(m_tls);
#endif
commandThread->Start();
}
if (m_connection)
{
m_connection->Disconnect();
}
debug("Exiting RemoteServer-loop");
}
void RemoteServer::Stop()
{
Thread::Stop();
if (m_connection)
{
m_connection->SetSuppressErrors(true);
m_connection->Cancel();
#ifdef WIN32
m_connection->Disconnect();
#endif
}
}
//*****************************************************************
// RequestProcessor
RequestProcessor::~RequestProcessor()
{
m_connection->Disconnect();
}
void RequestProcessor::Run()
{
bool ok = false;
m_connection->SetSuppressErrors(true);
#ifndef DISABLE_TLS
if (m_tls && !m_connection->StartTls(false, g_Options->GetSecureCert(), g_Options->GetSecureKey()))
{
debug("Could not establish secure connection to web-client: Start TLS failed");
return;
}
#endif
// Read the first 4 bytes to determine request type
int signature = 0;
if (!m_connection->Recv((char*)&signature, 4))
{
debug("Could not read request signature");
return;
}
if ((int)ntohl(signature) == (int)NZBMESSAGE_SIGNATURE)
{
// binary request received
ok = true;
BinRpcProcessor processor;
processor.SetConnection(m_connection.get());
processor.Execute();
}
else if (!strncmp((char*)&signature, "POST", 4) ||
!strncmp((char*)&signature, "GET ", 4) ||
!strncmp((char*)&signature, "OPTI", 4))
{
// HTTP request received
char buffer[1024];
if (m_connection->ReadLine(buffer, sizeof(buffer), nullptr))
{
WebProcessor::EHttpMethod httpMethod = WebProcessor::hmGet;
char* url = buffer;
if (!strncmp((char*)&signature, "POST", 4))
{
httpMethod = WebProcessor::hmPost;
url++;
}
if (!strncmp((char*)&signature, "OPTI", 4) && strlen(url) > 4)
{
httpMethod = WebProcessor::hmOptions;
url += 4;
}
if (char* p = strchr(url, ' '))
{
*p = '\0';
}
debug("url: %s", url);
WebProcessor processor;
processor.SetConnection(m_connection.get());
processor.SetUrl(url);
processor.SetHttpMethod(httpMethod);
processor.Execute();
m_connection->SetGracefull(true);
m_connection->Disconnect();
ok = true;
}
}
if (!ok)
{
warn("Non-nzbget request received on port %i from %s", m_tls ? g_Options->GetSecurePort() : g_Options->GetControlPort(), m_connection->GetRemoteAddr());
}
}
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