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