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xrdp-proprietary/sesman/tools/tcp.c

151 lines
3.4 KiB

/**
* xrdp: A Remote Desktop Protocol server.
*
* Copyright (C) Jay Sorg 2004-2013
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/**
*
* @file tcp.c
* @brief Tcp stream functions
* @author Jay Sorg, Simone Fedele
*
*/
#if defined(HAVE_CONFIG_H)
#include <config_ac.h>
#endif
#include "sesman.h"
#include <netinet/in.h>
#include <sys/socket.h>
#include <arpa/inet.h>
#include <stdlib.h>
#include <string.h>
/*****************************************************************************/
int DEFAULT_CC
tcp_force_recv(int sck, char *data, int len)
{
int rcvd;
//#ifndef LIBSCP_CLIENT
// int block;
// block = lock_fork_critical_section_start();
//#endif
while (len > 0)
{
rcvd = g_tcp_recv(sck, data, len, 0);
if (rcvd == -1)
{
if (g_tcp_last_error_would_block(sck))
{
g_sleep(1);
}
else
{
//#ifndef LIBSCP_CLIENT
// lock_fork_critical_section_end(block);
//#endif
return 1;
}
}
else if (rcvd == 0)
{
//#ifndef LIBSCP_CLIENT
// lock_fork_critical_section_end(block);
//#endif
return 1;
}
else
{
data += rcvd;
len -= rcvd;
}
}
//#ifndef LIBSCP_CLIENT
// lock_fork_critical_section_end(block);
//#endif
return 0;
}
/*****************************************************************************/
int DEFAULT_CC
tcp_force_send(int sck, char *data, int len)
{
int sent;
//#ifndef LIBSCP_CLIENT
// int block;
// block = lock_fork_critical_section_start();
//#endif
while (len > 0)
{
sent = g_tcp_send(sck, data, len, 0);
if (sent == -1)
{
if (g_tcp_last_error_would_block(sck))
{
g_sleep(1);
}
else
{
//#ifndef LIBSCP_CLIENT
// lock_fork_critical_section_end(block);
//#endif
return 1;
}
}
else if (sent == 0)
{
//#ifndef LIBSCP_CLIENT
// lock_fork_critical_section_end(block);
//#endif
return 1;
}
else
{
data += sent;
len -= sent;
}
}
//#ifndef LIBSCP_CLIENT
// lock_fork_critical_section_end(block);
//#endif
return 0;
}
/*****************************************************************************/
int DEFAULT_CC
tcp_bind(int sck, char *addr, char *port)
{
struct sockaddr_in s;
memset(&s, 0, sizeof(struct sockaddr_in));
s.sin_family = AF_INET;
s.sin_port = htons(atoi(port));
s.sin_addr.s_addr = inet_addr(addr);
return bind(sck, (struct sockaddr *)&s, sizeof(struct sockaddr_in));
}