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/* Copyright (c) 2001 Matej Pfajfar.
* Copyright (c) 2001-2004, Roger Dingledine.
* Copyright (c) 2004-2006, Roger Dingledine, Nick Mathewson.
* Copyright (c) 2007-2017, The Tor Project, Inc. */
/* See LICENSE for licensing information */
#ifndef SOCKS_REQUEST_ST_H
#define SOCKS_REQUEST_ST_H
/** State of a SOCKS request from a user to an OP. Also used to encode other
* information for non-socks user request (such as those on TransPort and
* DNSPort) */
struct socks_request_t {
/** Which version of SOCKS did the client use? One of "0, 4, 5" -- where
* 0 means that no socks handshake ever took place, and this is just a
* stub connection (e.g. see connection_ap_make_link()). */
uint8_t socks_version;
/** If using socks5 authentication, which authentication type did we
* negotiate? currently we support 0 (no authentication) and 2
* (username/password). */
uint8_t auth_type;
/** What is this stream's goal? One of the SOCKS_COMMAND_* values */
uint8_t command;
/** Which kind of listener created this stream? */
uint8_t listener_type;
size_t replylen; /**< Length of <b>reply</b>. */
uint8_t reply[MAX_SOCKS_REPLY_LEN]; /**< Write an entry into this string if
* we want to specify our own socks reply,
* rather than using the default socks4 or
* socks5 socks reply. We use this for the
* two-stage socks5 handshake.
*/
char address[MAX_SOCKS_ADDR_LEN]; /**< What address did the client ask to
connect to/resolve? */
uint16_t port; /**< What port did the client ask to connect to? */
unsigned int has_finished : 1; /**< Has the SOCKS handshake finished? Used to
* make sure we send back a socks reply for
* every connection. */
unsigned int got_auth : 1; /**< Have we received any authentication data? */
/** If this is set, we will choose "no authentication" instead of
* "username/password" authentication if both are offered. Used as input to
* parse_socks. */
unsigned int socks_prefer_no_auth : 1;
/** Number of bytes in username; 0 if username is NULL */
size_t usernamelen;
/** Number of bytes in password; 0 if password is NULL */
uint8_t passwordlen;
/** The negotiated username value if any (for socks5), or the entire
* authentication string (for socks4). This value is NOT nul-terminated;
* see usernamelen for its length. */
char *username;
/** The negotiated password value if any (for socks5). This value is NOT
* nul-terminated; see passwordlen for its length. */
char *password;
};
#endif
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