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AcceptThread.cpp
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AcceptThread.cpp
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/*************************************************************************
* UrBackup - Client/Server backup system
* Copyright (C) 2011-2016 Martin Raiber
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 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 Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
**************************************************************************/
#include "vld.h"
#include "AcceptThread.h"
#include "Server.h"
#include "stringtools.h"
#include "SelectThread.h"
#include "Client.h"
#include <memory.h>
#ifndef _WIN32
#include <errno.h>
#endif
extern bool run;
OutputCallback::OutputCallback(SOCKET fd_)
{
fd=fd_;
}
OutputCallback::~OutputCallback()
{
closesocket(fd);
}
void OutputCallback::operator() (const void* buf, size_t count)
{
size_t sent=0;
do
{
int rc = send(fd, (const char*)buf+sent, static_cast<int>(count-sent), MSG_NOSIGNAL);
if (rc < 0)
{
int ec;
#ifdef _WIN32
ec=GetLastError();
#else
ec=errno;
#endif
Server->Log("Send failed in OutputCallback ec="+convert(ec), LL_INFO);
throw std::runtime_error("Send failed in OutputCallback");
}
else
{
sent+=rc;
}
}
while(sent<count);
}
CAcceptThread::CAcceptThread( unsigned int nWorkerThreadsPerMaster, unsigned short int uPort ) : error(false)
{
WorkerThreadsPerMaster=nWorkerThreadsPerMaster;
int type = SOCK_STREAM;
#if !defined(_WIN32) && defined(SOCK_CLOEXEC)
type |= SOCK_CLOEXEC;
#endif
s=socket(AF_INET, type, 0);
if(s<1)
{
Server->Log("Creating SOCKET failed. Port "+convert((int)uPort)+" may already be in use",LL_ERROR);
error=true;
return;
}
#if !defined(_WIN32) && !defined(SOCK_CLOEXEC)
fcntl(s, F_SETFD, fcntl(s, F_GETFD, 0) | FD_CLOEXEC);
#endif
int optval=1;
int rc=setsockopt(s, SOL_SOCKET, SO_REUSEADDR, (char*)&optval, sizeof(int));
if(rc==SOCKET_ERROR)
{
Server->Log("Failed setting SO_REUSEADDR for port "+convert(uPort),LL_ERROR);
error=true;
return;
}
#ifdef __APPLE__
optval = 1;
setsockopt(s, SOL_SOCKET, SO_NOSIGPIPE, (void*)&optval, sizeof(optval));
#endif
sockaddr_in addr;
memset(&addr, 0, sizeof(sockaddr_in));
addr.sin_family=AF_INET;
addr.sin_port=htons(uPort);
addr.sin_addr.s_addr= htonl(INADDR_ANY);
rc=bind(s,(sockaddr*)&addr,sizeof(addr));
if(rc==SOCKET_ERROR)
{
Server->Log("Failed binding SOCKET to Port "+convert(uPort),LL_ERROR);
error=true;
return;
}
listen(s, 10000);
Server->Log("Server started up successfully!",LL_INFO);
}
CAcceptThread::~CAcceptThread()
{
closesocket(s);
Server->Log("Deleting SelectThreads..");
for(size_t i=0;i<SelectThreads.size();++i)
{
delete SelectThreads[i];
}
}
#ifndef _WIN32
void printLinError(void)
{
switch(errno)
{
case EWOULDBLOCK: Server->Log("Reason: EWOULDBLOCK", LL_ERROR); break;
case EBADF: Server->Log("Reason: EBADF", LL_ERROR); break;
case ECONNABORTED: Server->Log("Reason: ECONNABORTED", LL_ERROR); break;
case EINTR: Server->Log("Reason: EINTR", LL_ERROR); break;
case EINVAL: Server->Log("Reason: EINVAL", LL_ERROR); break;
case EMFILE: Server->Log("Reason: EMFILE", LL_ERROR); break;
case ENFILE: Server->Log("Reason: ENFILE", LL_ERROR); break;
case ENOTSOCK: Server->Log("Reason: ENOTSOCK", LL_ERROR); break;
case EFAULT: Server->Log("Reason: EFAULT", LL_ERROR); break;
case ENOBUFS: Server->Log("Reason: ENOBUFS", LL_ERROR); break;
case ENOMEM: Server->Log("Reason: ENOMEM", LL_ERROR); break;
case EPROTO: Server->Log("Reason: EPROTO", LL_ERROR); break;
case EPERM: Server->Log("Reason: EPERM", LL_ERROR); break;
}
}
#endif
void CAcceptThread::operator()(bool single)
{
do
{
socklen_t addrsize=sizeof(sockaddr_in);
#ifdef _WIN32
fd_set fdset;
FD_ZERO(&fdset);
FD_SET(s, &fdset);
timeval lon;
lon.tv_sec=1;
lon.tv_usec=0;
_i32 rc=select((int)s+1, &fdset, 0, 0, &lon);
if( rc<0 )
return;
if( FD_ISSET(s,&fdset) )
{
#else
pollfd conn[1];
conn[0].fd=s;
conn[0].events=POLLIN;
conn[0].revents=0;
int rc = poll(conn, 1, 1000);
if(rc<0)
return;
if(rc>0)
{
#endif
sockaddr_in naddr;
SOCKET ns= ACCEPT_CLOEXEC(s, (sockaddr*)&naddr, &addrsize);
if(ns!=SOCKET_ERROR)
{
#ifdef __APPLE__
int optval = 1;
setsockopt(ns, SOL_SOCKET, SO_NOSIGPIPE, (void*)&optval, sizeof(optval));
#endif
//Server->Log("New Connection incomming", LL_INFO);
OutputCallback *output=new OutputCallback(ns);
FCGIProtocolDriver *driver=new FCGIProtocolDriver(*output );
CClient *client=new CClient();
client->set(ns, output, driver);
AddToSelectThread(client);
}
else
{
Server->Log("Accepting client failed", LL_ERROR);
#ifndef _WIN32
printLinError();
#endif
Server->wait(1000);
}
}
}while(single==false);
}
void CAcceptThread::AddToSelectThread(CClient *client)
{
for(size_t i=0;i<SelectThreads.size();++i)
{
if( SelectThreads[i]->FreeClients()>0 )
{
SelectThreads[i]->AddClient( client );
return;
}
}
CSelectThread *nt=new CSelectThread(WorkerThreadsPerMaster);
nt->AddClient( client );
SelectThreads.push_back( nt );
Server->createThread(nt, "fastcgi: accept");
}
bool CAcceptThread::has_error(void)
{
return error;
}