/*
Socket.cpp
Copyright (C) 2002-2004 René Nyffenegger
This source code is provided 'as-is', without any express or implied
warranty. In no event will the author be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this source code must not be misrepresented; you must not
claim that you wrote the original source code. If you use this source code
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original source code.
3. This notice may not be removed or altered from any source distribution.
René Nyffenegger rene.nyffenegger@adp-gmbh.ch
*/
/*
Note on point 2:
THIS IS NOT THE ORIGINAL SOURCE1!!1!!!~!!~`1ONE!!`1
*/
#include "Globals.h" // NOTE: MSVC stupidness requires this to be the same across all modules
#include "Socket.h"
#include <iostream>
#ifndef _WIN32
#include <cstring>
#include <sys/time.h>
#include <unistd.h>
#define SD_SEND 0x01
#else
#define MSG_NOSIGNAL (0)
#endif
#ifdef __MAC_NA
#define MSG_NOSIGNAL (0)
#endif
#ifndef MSG_NOSIGNAL
#define MSG_NOSIGNAL 0
#endif // MSG_NOSIGNAL
using namespace std;
int Socket::nofSockets_= 0;
void Socket::Start()
{
#ifdef _WIN32
if (!nofSockets_)
{
WSADATA info;
if (WSAStartup(MAKEWORD(2,0), &info))
{
throw "Could not start WSA";
}
}
#endif
++nofSockets_;
}
void Socket::End()
{
#ifdef _WIN32
WSACleanup();
#endif
}
Socket::Socket() :
s_(INVALID_SOCKET)
{
Start();
// UDP: use SOCK_DGRAM instead of SOCK_STREAM
s_ = socket(AF_INET,SOCK_STREAM,0);
if (!IsValid())
{
#if !defined(ANDROID_NDK)
throw "INVALID_SOCKET";
#endif
}
refCounter_ = new int(1);
}
Socket::Socket(SOCKET s) : s_(s)
{
Start();
refCounter_ = new int(1);
};
Socket::~Socket()
{
if (! --(*refCounter_))
{
Close();
delete refCounter_;
}
--nofSockets_;
if (!nofSockets_)
{
End();
}
}
Socket::Socket(const Socket& o)
{
refCounter_=o.refCounter_;
(*refCounter_)++;
s_ =o.s_;
nofSockets_++;
}
Socket& Socket::operator=(Socket& o)
{
(*o.refCounter_)++;
refCounter_ = o.refCounter_;
s_ = o.s_;
nofSockets_++;
return *this;
}
bool Socket::IsValid(void) const
{
#ifdef _WIN32
return (s_ != INVALID_SOCKET);
#else
return (s_ >= 0);
#endif
}
void Socket::Close( bool a_WaitSend /* = false */ )
{
if (IsValid())
{
if (a_WaitSend)
{
assert( shutdown(s_, SD_SEND ) == 0 );
char c;
while( recv(s_, &c, 1, 0 ) > 0 )
{}
}
#ifndef _WIN32
// Linux needs to shut the socket down first, otherwise the socket keeps blocking accept() and select() calls!
// Ref.: http://forum.mc-server.org/showthread.php?tid=344
if (shutdown(s_, SHUT_RDWR) != 0)
{
LOGWARN("Error on shutting down socket %d", s_);
}
#endif // _WIN32
closesocket(s_);
s_ = INVALID_SOCKET;
}
}
std::string Socket::ReceiveLine()
{
std::string ret;
while (1)
{
char r;
if (recv(s_, &r, 1, 0) <= 0 )
{
return "";
}
ret += r;
if (r == '\n') return ret;
}
}
std::string Socket::ReceiveBytes( unsigned int a_Length )
{
std::string ret;
while( ret.size() < a_Length )
{
char r;
if (recv(s_, &r, 1, 0) <= 0 )
{
return "";
}
ret += r;
}
return ret;
}
void Socket::SendLine(std::string s)
{
s += '\n';
if( send(s_,s.c_str(),s.length(),MSG_NOSIGNAL) <= 0 )
{
//printf("SendLine Socket error!! \n" );
Close();
}
}
void Socket::SendBytes(const std::string& s)
{
if( send(s_,s.c_str(),s.length(), MSG_NOSIGNAL) <= 0 )
{
//printf("SendBytes Socket error!! \n" );
Close();
}
}
SocketServer::SocketServer(int port, int connections, TypeSocket type)
{
sockaddr_in sa;
memset(&sa, 0, sizeof(sa));
sa.sin_family = PF_INET;
sa.sin_port = htons(port);
s_ = socket(AF_INET, SOCK_STREAM, 0);
if (!IsValid())
{
LOG("WebServer: INVALID_SOCKET");
}
if(type==NonBlockingSocket)
{
return;
}
#ifdef _WIN32
char yes = 1;
#else
int yes = 1;
#endif
if (setsockopt(s_,SOL_SOCKET,SO_REUSEADDR,&yes,sizeof(int)) == -1)
{
LOG("WebServer: setsockopt == -1");
return;
}
/* bind the socket to the internet address */
if (bind(s_, (sockaddr *)&sa, sizeof(sockaddr_in)) == SOCKET_ERROR)
{
closesocket(s_);
LOG("WebServer: INVALID_SOCKET");
}
listen(s_, connections);
}
Socket* SocketServer::Accept()
{
Socket * r = new Socket(accept(s_, 0, 0));
if (!r->IsValid())
{
delete r;
r = NULL;
}
return r;
}
SocketSelect::SocketSelect(Socket const * const s1, Socket const * const s2, TypeSocket type)
{
FD_ZERO(&fds_);
SOCKET Highest = s1->s_;
FD_SET(const_cast<Socket*>(s1)->s_,&fds_);
if(s2)
{
FD_SET(const_cast<Socket*>(s2)->s_,&fds_);
if (s2->s_ > Highest)
{
Highest = s2->s_;
}
}
if (select(Highest + 1, &fds_, NULL, NULL, NULL) == SOCKET_ERROR)
{
#if !defined(ANDROID_NDK)
throw "Error in select";
#endif
}
}
bool SocketSelect::Readable(Socket const* const s)
{
return (FD_ISSET(s->s_,&fds_) != 0);
}
