157 lines
5.0 KiB
C
157 lines
5.0 KiB
C
/**
|
|
* \file net.h
|
|
*
|
|
* \brief MD5 message digest algorithm (hash function)
|
|
*
|
|
* Copyright (C) 2006-2010, Brainspark B.V.
|
|
*
|
|
* This file is part of PolarSSL (http://www.polarssl.org)
|
|
* Lead Maintainer: Paul Bakker <polarssl_maintainer at polarssl.org>
|
|
*
|
|
* All rights reserved.
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 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 General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License along
|
|
* with this program; if not, write to the Free Software Foundation, Inc.,
|
|
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
|
|
*/
|
|
#ifndef POLARSSL_NET_H
|
|
#define POLARSSL_NET_H
|
|
|
|
#include <string.h>
|
|
|
|
#define POLARSSL_ERR_NET_UNKNOWN_HOST -0x0F00
|
|
#define POLARSSL_ERR_NET_SOCKET_FAILED -0x0F10
|
|
#define POLARSSL_ERR_NET_CONNECT_FAILED -0x0F20
|
|
#define POLARSSL_ERR_NET_BIND_FAILED -0x0F30
|
|
#define POLARSSL_ERR_NET_LISTEN_FAILED -0x0F40
|
|
#define POLARSSL_ERR_NET_ACCEPT_FAILED -0x0F50
|
|
#define POLARSSL_ERR_NET_RECV_FAILED -0x0F60
|
|
#define POLARSSL_ERR_NET_SEND_FAILED -0x0F70
|
|
#define POLARSSL_ERR_NET_CONN_RESET -0x0F80
|
|
#define POLARSSL_ERR_NET_TRY_AGAIN -0x0F90
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
/**
|
|
* \brief Initiate a TCP connection with host:port
|
|
*
|
|
* \param fd Socket to use
|
|
* \param host Host to connect to
|
|
* \param port Port to connect to
|
|
*
|
|
* \return 0 if successful, or one of:
|
|
* POLARSSL_ERR_NET_SOCKET_FAILED,
|
|
* POLARSSL_ERR_NET_UNKNOWN_HOST,
|
|
* POLARSSL_ERR_NET_CONNECT_FAILED
|
|
*/
|
|
int net_connect( int *fd, const char *host, int port );
|
|
|
|
/**
|
|
* \brief Create a listening socket on bind_ip:port.
|
|
* If bind_ip == NULL, all interfaces are binded.
|
|
*
|
|
* \param fd Socket to use
|
|
* \param bind_ip IP to bind to, can be NULL
|
|
* \param port Port number to use
|
|
*
|
|
* \return 0 if successful, or one of:
|
|
* POLARSSL_ERR_NET_SOCKET_FAILED,
|
|
* POLARSSL_ERR_NET_BIND_FAILED,
|
|
* POLARSSL_ERR_NET_LISTEN_FAILED
|
|
*/
|
|
int net_bind( int *fd, const char *bind_ip, int port );
|
|
|
|
/**
|
|
* \brief Accept a connection from a remote client
|
|
*
|
|
* \param bind_fd Relevant socket
|
|
* \param client_fd Will contain the connected client socket
|
|
* \param client_ip Will contain the client IP address
|
|
*
|
|
* \return 0 if successful, POLARSSL_ERR_NET_ACCEPT_FAILED, or
|
|
* POLARSSL_ERR_NET_WOULD_BLOCK is bind_fd was set to
|
|
* non-blocking and accept() is blocking.
|
|
*/
|
|
int net_accept( int bind_fd, int *client_fd, void *client_ip );
|
|
|
|
/**
|
|
* \brief Set the socket blocking
|
|
*
|
|
* \param fd Socket to set
|
|
*
|
|
* \return 0 if successful, or a non-zero error code
|
|
*/
|
|
int net_set_block( int fd );
|
|
|
|
/**
|
|
* \brief Set the socket non-blocking
|
|
*
|
|
* \param fd Socket to set
|
|
*
|
|
* \return 0 if successful, or a non-zero error code
|
|
*/
|
|
int net_set_nonblock( int fd );
|
|
|
|
/**
|
|
* \brief Portable usleep helper
|
|
*
|
|
* \param usec Amount of microseconds to sleep
|
|
*
|
|
* \note Real amount of time slept will not be less than
|
|
* select()'s timeout granularity (typically, 10ms).
|
|
*/
|
|
void net_usleep( unsigned long usec );
|
|
|
|
/**
|
|
* \brief Read at most 'len' characters. If no error occurs,
|
|
* the actual amount read is returned.
|
|
*
|
|
* \param ctx Socket
|
|
* \param buf The buffer to write to
|
|
* \param len Maximum length of the buffer
|
|
*
|
|
* \return This function returns the number of bytes received,
|
|
* or a non-zero error code; POLARSSL_ERR_NET_TRY_AGAIN
|
|
* indicates read() is blocking.
|
|
*/
|
|
int net_recv( void *ctx, unsigned char *buf, size_t len );
|
|
|
|
/**
|
|
* \brief Write at most 'len' characters. If no error occurs,
|
|
* the actual amount read is returned.
|
|
*
|
|
* \param ctx Socket
|
|
* \param buf The buffer to read from
|
|
* \param len The length of the buffer
|
|
*
|
|
* \return This function returns the number of bytes sent,
|
|
* or a non-zero error code; POLARSSL_ERR_NET_TRY_AGAIN
|
|
* indicates write() is blocking.
|
|
*/
|
|
int net_send( void *ctx, unsigned char *buf, size_t len );
|
|
|
|
/**
|
|
* \brief Gracefully shutdown the connection
|
|
*
|
|
* \param fd The socket to close
|
|
*/
|
|
void net_close( int fd );
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#endif /* net.h */
|