openjpeg/applications/jpip/libopenjpip/sock_manager.c

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/*
* $Id$
*
* Copyright (c) 2002-2011, Communications and Remote Sensing Laboratory, Universite catholique de Louvain (UCL), Belgium
* Copyright (c) 2002-2011, Professor Benoit Macq
* Copyright (c) 2010-2011, Kaori Hagihara
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS `AS IS'
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#ifdef _WIN32
#include <windows.h>
#else
#include <sys/types.h>
#include <sys/socket.h>
#include <arpa/inet.h>
#include <unistd.h>
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#endif
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include "sock_manager.h"
#ifdef SERVER
#include "fcgi_stdio.h"
#define logstream FCGI_stdout
#else
#define FCGI_stdout stdout
#define FCGI_stderr stderr
#define logstream stderr
#endif /*SERVER*/
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SOCKET open_listeningsocket( int port)
{
SOCKET listening_socket;
struct sockaddr_in sin;
int sock_optval = 1;
listening_socket = socket(AF_INET, SOCK_STREAM, 0);
if ( listening_socket == -1 ){
perror("socket");
exit(1);
}
if ( setsockopt(listening_socket, SOL_SOCKET, SO_REUSEADDR, (const char *)&sock_optval, sizeof(sock_optval)) == -1 ){
perror("setsockopt");
exit(1);
}
memset(&sin, 0, sizeof(sin));
sin.sin_family = AF_INET;
sin.sin_port = htons(port);
sin.sin_addr.s_addr = htonl(INADDR_ANY);
if ( bind(listening_socket, (struct sockaddr *)&sin, sizeof(sin)) < 0 ){
perror("bind");
close_socket(listening_socket);
exit(1);
}
if( listen(listening_socket, SOMAXCONN) == -1){
perror("listen");
close_socket(listening_socket);
exit(1);
}
fprintf( FCGI_stderr, "port %d is listened\n", port);
return listening_socket;
}
SOCKET accept_socket( SOCKET listening_socket)
{
struct sockaddr_in peer_sin;
unsigned int addrlen = sizeof(peer_sin);
return accept( listening_socket, (struct sockaddr *)&peer_sin, &addrlen);
}
void send_stream( SOCKET connected_socket, void *stream, int length)
{
char *ptr = (char*)stream;
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int remlen = length;
while( remlen > 0){
int sentlen = send( connected_socket, ptr, remlen, 0);
if( sentlen == -1){
fprintf( FCGI_stderr, "sending stream error\n");
break;
}
remlen = remlen - sentlen;
ptr = ptr + sentlen;
}
}
void * receive_stream( SOCKET connected_socket, int length)
{
char *stream, *ptr;
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int remlen, redlen;
ptr = stream = malloc( length);
remlen = length;
while( remlen > 0){
redlen = recv( connected_socket, ptr, remlen, 0);
if( redlen == -1){
fprintf( FCGI_stderr, "receive stream error\n");
free( stream);
stream = NULL;
break;
}
remlen -= redlen;
ptr = ptr + redlen;
}
return stream;
}
int receive_line(SOCKET connected_socket, char *p)
{
int len = 0;
while (1){
int ret;
ret = recv( connected_socket, p, 1, 0);
if ( ret == -1 ){
perror("receive");
exit(1);
} else if ( ret == 0 ){
break;
}
if ( *p == '\n' )
break;
p++;
len++;
}
*p = '\0';
if( len == 0)
fprintf( FCGI_stderr, "Header receive error\n");
return len;
}
char * receive_string( SOCKET connected_socket)
{
char buf[BUF_LEN];
receive_line( connected_socket, buf);
return strdup(buf);
}
int close_socket( SOCKET sock)
{
#ifdef _WIN32
return closesocket( sock);
#else
return close( sock);
#endif
}