119 lines
3.3 KiB
C
119 lines
3.3 KiB
C
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/**
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* @file socks_proto.h
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* @author Ambroz Bizjak <ambrop7@gmail.com>
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*
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* @section LICENSE
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the author nor the
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* names of its contributors may be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* @section DESCRIPTION
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*
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* Definitions for the SOCKS protocol.
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*/
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#ifndef BADVPN_MISC_SOCKS_PROTO_H
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#define BADVPN_MISC_SOCKS_PROTO_H
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#include <stdint.h>
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#include <misc/packed.h>
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#define SOCKS_VERSION 0x05
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#define SOCKS_METHOD_NO_AUTHENTICATION_REQUIRED 0x00
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#define SOCKS_METHOD_GSSAPI 0x01
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#define SOCKS_METHOD_USERNAME_PASSWORD 0x02
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#define SOCKS_METHOD_NO_ACCEPTABLE_METHODS 0xFF
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#define SOCKS_CMD_CONNECT 0x01
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#define SOCKS_CMD_BIND 0x02
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#define SOCKS_CMD_UDP_ASSOCIATE 0x03
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#define SOCKS_ATYP_IPV4 0x01
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#define SOCKS_ATYP_DOMAINNAME 0x03
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#define SOCKS_ATYP_IPV6 0x04
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#define SOCKS_REP_SUCCEEDED 0x00
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#define SOCKS_REP_GENERAL_FAILURE 0x01
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#define SOCKS_REP_CONNECTION_NOT_ALLOWED 0x02
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#define SOCKS_REP_NETWORK_UNREACHABLE 0x03
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#define SOCKS_REP_HOST_UNREACHABLE 0x04
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#define SOCKS_REP_CONNECTION_REFUSED 0x05
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#define SOCKS_REP_TTL_EXPIRED 0x06
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#define SOCKS_REP_COMMAND_NOT_SUPPORTED 0x07
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#define SOCKS_REP_ADDRESS_TYPE_NOT_SUPPORTED 0x08
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B_START_PACKED
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struct socks_client_hello_header {
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uint8_t ver;
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uint8_t nmethods;
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} B_PACKED;
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B_END_PACKED
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B_START_PACKED
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struct socks_client_hello_method {
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uint8_t method;
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} B_PACKED;
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B_END_PACKED
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B_START_PACKED
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struct socks_server_hello {
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uint8_t ver;
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uint8_t method;
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} B_PACKED;
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B_END_PACKED
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B_START_PACKED
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struct socks_request_header {
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uint8_t ver;
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uint8_t cmd;
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uint8_t rsv;
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uint8_t atyp;
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} B_PACKED;
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B_END_PACKED
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B_START_PACKED
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struct socks_reply_header {
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uint8_t ver;
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uint8_t rep;
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uint8_t rsv;
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uint8_t atyp;
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} B_PACKED;
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B_END_PACKED
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B_START_PACKED
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struct socks_addr_ipv4 {
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uint32_t addr;
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uint16_t port;
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} B_PACKED;
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B_END_PACKED
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B_START_PACKED
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struct socks_addr_ipv6 {
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uint8_t addr[16];
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uint16_t port;
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} B_PACKED;
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B_END_PACKED
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#endif
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