2002-08-13 14:34:25 +00:00
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/************************************************************************
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* IRC - Internet Relay Chat, servlink/servlink.h
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 1, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*
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2002-08-13 14:45:13 +00:00
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* $Id: servlink.h,v 1.2 2002/08/13 14:45:12 fishwaldo Exp $
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2002-08-13 14:34:25 +00:00
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*/
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#ifndef INCLUDED_servlink_servlink_h
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#define INCLUDED_servlink_servlink_h
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#include "setup.h"
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#ifdef HAVE_LIBCRYPTO
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#include <openssl/evp.h>
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#endif
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#ifdef HAVE_LIBZ
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#include <zlib.h>
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#endif
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/* do not use stdin/out/err, as it seems to break on solaris */
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#define CONTROL_R fds[0]
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#define CONTROL_W fds[1]
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#define LOCAL_R fds[2]
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#define LOCAL_W fds[3]
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#define REMOTE_R fds[4]
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#define REMOTE_W REMOTE_R
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#undef SERVLINK_DEBUG
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#define READLEN 16384
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#ifdef HAVE_LIBZ
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#define BUFLEN READLEN * 6 /* allow for decompression */
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#else
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#define BUFLEN READLEN
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#endif
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#ifdef HAVE_LIBCRYPTO
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#define CIPHER_BF 1
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#define CIPHER_CAST 2
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#define CIPHER_DES 3
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#define CIPHER_3DES 4
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#define CIPHER_IDEA 5
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#define CIPHER_RC5_8 6
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#define CIPHER_RC5_12 7
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#define CIPHER_RC5_16 8
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struct crypt_state
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{
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EVP_CIPHER_CTX ctx;
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EVP_CIPHER *cipher;
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unsigned int keylen; /* bytes */
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unsigned char *key;
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unsigned int ivlen; /* bytes */
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unsigned char *iv;
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unsigned int rounds; /* rc5 only */
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};
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#endif
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#ifdef HAVE_LIBZ
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struct zip_state
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{
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z_stream z_stream;
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int level; /* compression level */
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};
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#endif
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struct slink_state
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{
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unsigned int crypt:1;
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unsigned int zip:1;
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unsigned int active:1;
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unsigned char buf[BUFLEN*2];
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unsigned int ofs;
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unsigned int len;
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#ifdef HAVE_LIBCRYPTO
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struct crypt_state crypt_state;
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#endif
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#ifdef HAVE_LIBZ
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struct zip_state zip_state;
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#endif
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};
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typedef void (io_callback)(void);
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struct fd_table
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{
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int fd;
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io_callback *read_cb;
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io_callback *write_cb;
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};
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extern struct slink_state in_state;
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extern struct slink_state out_state;
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extern struct fd_table fds[5];
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#endif /* INCLUDED_servlink_servlink_h */
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