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/*
* Copyright (C)2005-2017 Haxe Foundation
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*/
#include "socket.h"
#include <string.h>
#ifdef OS_WINDOWS
static int init_done = 0;
static WSADATA init_data;
# define POSIX_LABEL(x)
# define HANDLE_EINTR(x)
#else
# include <sys/types.h>
# include <sys/socket.h>
# include <sys/time.h>
# include <netinet/in.h>
# include <netinet/tcp.h>
# include <arpa/inet.h>
# include <unistd.h>
# include <netdb.h>
# include <fcntl.h>
# include <errno.h>
# include <stdio.h>
# include <poll.h>
# define closesocket close
# define SOCKET_ERROR (-1)
# define POSIX_LABEL(x) x:
# define HANDLE_EINTR(x) if( errno == EINTR ) goto x
#endif
#if defined(OS_WINDOWS) || defined(OS_MAC)
# define MSG_NOSIGNAL 0
#endif
static int block_error() {
#ifdef OS_WINDOWS
int err = WSAGetLastError();
if( err == WSAEWOULDBLOCK || err == WSAEALREADY )
#else
if( errno == EAGAIN || errno == EWOULDBLOCK || errno == EINPROGRESS || errno == EALREADY )
#endif
return PS_BLOCK;
return PS_ERROR;
}
void psock_init() {
#ifdef OS_WINDOWS
if( !init_done ) {
WSAStartup(MAKEWORD(2,0),&init_data);
init_done = 1;
}
#endif
}
PSOCK psock_create() {
PSOCK s = socket(AF_INET,SOCK_STREAM,0);
# if defined(OS_MAC) || defined(OS_BSD)
if( s != INVALID_SOCKET )
setsockopt(s,SOL_SOCKET,SO_NOSIGPIPE,NULL,0);
# endif
# ifdef OS_POSIX
// we don't want sockets to be inherited in case of exec
{
int old = fcntl(s,F_GETFD,0);
if( old >= 0 ) fcntl(s,F_SETFD,old|FD_CLOEXEC);
}
# endif
return s;
}
void psock_close( PSOCK s ) {
POSIX_LABEL(close_again);
if( closesocket(s) ) {
HANDLE_EINTR(close_again);
}
}
int psock_send( PSOCK s, const char *buf, int size ) {
int ret;
POSIX_LABEL(send_again);
ret = send(s,buf,size,MSG_NOSIGNAL);
if( ret == SOCKET_ERROR ) {
HANDLE_EINTR(send_again);
return block_error();
}
return ret;
}
int psock_recv( PSOCK s, char *buf, int size ) {
int ret;
POSIX_LABEL(recv_again);
ret = recv(s,buf,size,MSG_NOSIGNAL);
if( ret == SOCKET_ERROR ) {
HANDLE_EINTR(recv_again);
return block_error();
}
return ret;
}
PHOST phost_resolve( const char *host ) {
PHOST ip = inet_addr(host);
if( ip == INADDR_NONE ) {
struct hostent *h;
# if defined(OS_WINDOWS) || defined(OS_MAC) || defined(OS_CYGWIN)
h = gethostbyname(host);
# else
struct hostent hbase;
char buf[1024];
int errcode;
gethostbyname_r(host,&hbase,buf,1024,&h,&errcode);
# endif
if( h == NULL )
return UNRESOLVED_HOST;
ip = *((unsigned int*)h->h_addr);
}
return ip;
}
SERR psock_connect( PSOCK s, PHOST host, int port ) {
struct sockaddr_in addr;
memset(&addr,0,sizeof(addr));
addr.sin_family = AF_INET;
addr.sin_port = htons(port);
*(int*)&addr.sin_addr.s_addr = host;
if( connect(s,(struct sockaddr*)&addr,sizeof(addr)) != 0 )
return block_error();
return PS_OK;
}
SERR psock_set_timeout( PSOCK s, double t ) {
#ifdef OS_WINDOWS
int time = (int)(t * 1000);
#else
struct timeval time;
time.tv_usec = (int)((t - (int)t)*1000000);
time.tv_sec = (int)t;
#endif
if( setsockopt(s,SOL_SOCKET,SO_SNDTIMEO,(char*)&time,sizeof(time)) != 0 )
return PS_ERROR;
if( setsockopt(s,SOL_SOCKET,SO_RCVTIMEO,(char*)&time,sizeof(time)) != 0 )
return PS_ERROR;
return PS_OK;
}
SERR psock_set_blocking( PSOCK s, int block ) {
#ifdef OS_WINDOWS
{
unsigned long arg = !block;
if( ioctlsocket(s,FIONBIO,&arg) != 0 )
return PS_ERROR;
}
#else
{
int rights = fcntl(s,F_GETFL);
if( rights == -1 )
return PS_ERROR;
if( block )
rights &= ~O_NONBLOCK;
else
rights |= O_NONBLOCK;
if( fcntl(s,F_SETFL,rights) == -1 )
return PS_ERROR;
}
#endif
return PS_OK;
}
SERR psock_set_fastsend( PSOCK s, int fast ) {
if( setsockopt(s,IPPROTO_TCP,TCP_NODELAY,(char*)&fast,sizeof(fast)) )
return block_error();
return PS_OK;
}
void psock_wait( PSOCK s ) {
# ifdef OS_WINDOWS
fd_set set;
FD_ZERO(&set);
FD_SET(s,&set);
select((int)s+1,&set,NULL,NULL,NULL);
# else
struct pollfd fds;
POSIX_LABEL(poll_again);
fds.fd = s;
fds.events = POLLIN;
fds.revents = 0;
if( poll(&fds,1,-1) < 0 ) {
HANDLE_EINTR(poll_again);
}
# endif
}
/* ************************************************************************ */
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