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/* $OpenBSD: util.h,v 1.5 2005/02/24 15:49:08 dhartmei Exp $ */
/*
* Copyright (c) 1996-2001
* Obtuse Systems Corporation. 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.
* 4. Neither the name of the Obtuse Systems nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 OBTUSE SYSTEMS CORPORATION 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.
*/
struct proxy_channel {
int pc_to_fd, pc_from_fd;
int pc_alive;
int pc_nextbyte;
int pc_flags;
int pc_length;
int pc_size;
struct sockaddr_in pc_from_sa, pc_to_sa;
int (*pc_filter)( void ** databuf, int datalen);
char *pc_buffer;
};
struct csiob {
int fd;
int line_buffer_size, io_buffer_size, io_buffer_len, next_byte;
unsigned char *io_buffer, *line_buffer;
struct sockaddr_in sa, real_sa;
const char *who;
char alive, got_eof, data_available;
int send_oob_flags;
};
extern int telnet_getline(struct csiob *iobp,
struct csiob *telnet_passthrough);
extern int get_proxy_env(int fd, struct sockaddr_in *server_sa_ptr,
struct sockaddr_in *client_sa_ptr, struct sockaddr_in *proxy_sa_ptr);
extern int get_backchannel_socket(int type, int min_port, int max_port,
int start_port, int direction, struct sockaddr_in *sap);
extern int xfer_data(const char *what_read, int from_fd, int to_fd,
struct in_addr from, struct in_addr to);
extern char *ProgName;
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