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/*
* Copyright (c) 2007-2024 Paul Mattes.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * 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.
* * Neither the names of Paul Mattes nor the names of his contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY PAUL MATTES "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 PAUL MATTES 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.
*/
/*
* proxy.h
* Declarations for proxy.c.
*/
/*
* Supported proxy types.
*/
typedef enum {
PT_NONE,
PT_PASSTHRU,/* Sun telnet-passthru */
PT_HTTP, /* RFC 2817 CONNECT tunnel */
PT_TELNET, /* 'connect host port' proxy */
PT_SOCKS4, /* SOCKS version 4 (or 4A if necessary) */
PT_SOCKS4A, /* SOCKS version 4A (force remote name resolution) */
PT_SOCKS5, /* SOCKS version 5 (RFC 1928) */
PT_SOCKS5D, /* SOCKS version 5D (force remote name resolution) */
PT_MAX,
PT_ERROR = -1,
PT_FIRST = PT_PASSTHRU
} proxytype_t;
/*
* Proxy negotiate return codes.
*/
typedef enum {
PX_SUCCESS, /* success */
PX_FAILURE, /* failure */
PX_WANTMORE /* more input needed */
} proxy_negotiate_ret_t;
typedef void *proxy_t;
int proxy_setup(const char *spec, char **puser, char **phost, char **pport);
proxy_negotiate_ret_t proxy_negotiate(socket_t fd, const char *user,
const char *host, unsigned short port, bool blocking);
proxy_negotiate_ret_t proxy_continue(void);
void proxy_close(void);
const char *proxy_type_name(proxytype_t type);
bool proxy_takes_username(proxytype_t type);
int proxy_default_port(proxytype_t type);
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