commit adbe6a25215b5f2c626a0801a49d596c0e478b5c Author: rl1987 rl1987@sdf.lonestar.org Date: Sun May 13 14:06:43 2018 +0200
Copy socks5.trunnel from trunnel examples dir --- src/trunnel/socks5.trunnel | 115 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 115 insertions(+)
diff --git a/src/trunnel/socks5.trunnel b/src/trunnel/socks5.trunnel new file mode 100644 index 000000000..ab53a4315 --- /dev/null +++ b/src/trunnel/socks5.trunnel @@ -0,0 +1,115 @@ +// Example: here's a quickie implementation of the messages in the +// socks5 protocol. + +struct socks5_client_version { + u8 version IN [5]; + u8 n_methods; + u8 methods[n_methods]; +} + +struct socks5_server_method { + u8 version IN [5]; + u8 method; +} + +const CMD_CONNECT = 1; +const CMD_BIND = 2; +const CMD_UDP_ASSOCIATE = 3; +// This is a tor extension +const CMD_RESOLVE_PTR = 0xF1; + +const ATYPE_IPV4 = 1; +const ATYPE_IPV6 = 4; +const ATYPE_DOMAINNAME = 3; + +struct domainname { + u8 len; + char name[len]; +} + +struct socks5_client_request { + u8 version IN [5]; + u8 command IN [CMD_CONNECT, CMD_BIND, CMD_UDP_ASSOCIATE, CMD_RESOLVE_PTR]; + u8 reserved IN [0]; + u8 atype; + union dest_addr[atype] { + ATYPE_IPV4: u32 ipv4; + ATYPE_IPV6: u8 ipv6[16]; + ATYPE_DOMAINNAME: struct domainname domainname; + default: fail; + }; + u16 dest_port; +} + +struct socks5_server_reply { + u8 version IN [5]; + u8 reply; + u8 reserved IN [0]; + u8 atype; + union bind_addr[atype] { + ATYPE_IPV4: u32 ipv4; + ATYPE_IPV6: u8 ipv6[16]; + ATYPE_DOMAINNAME: struct domainname domainname; + default: fail; + }; + u16 bind_port; +} + +struct socks5_client_userpass_auth { + u8 version IN [1]; + u8 username_len; + char username[username_len]; + u8 passwd_len; + char passwd[passwd_len]; +} + +struct socks5_server_userpath_auth { + u8 version IN [1]; + u8 status; +} + +// Oh why not. Here's socks4 and socks4a. + +struct socks4_client_request { + u8 version IN [4]; + u8 command IN [CMD_CONNECT,CMD_BIND,CMD_RESOLVE_PTR]; + u16 port; + u32 addr; + nulterm username; + union socks4a_addr[addr] { + 1..255: + nulterm hostname; + default: + ; + }; +} + +struct socks4_server_reply { + u8 version IN [4]; + u8 status; + u16 port; + u32 addr; +} + +// And here's the extended stuff from proposal 229 + +struct tor_socksauth_keyval { + u16 keylen; + char key[keylen]; + u16 vallen; + char val[vallen]; +} + +struct tor_extended_socks_auth_request { + u8 version IN [1]; + u16 npairs; + struct tor_socksauth_keyval pairs[npairs]; +} + +struct tor_extended_socks_auth_response { + u8 version IN [1]; + u8 status; + u16 npairs; + struct tor_socksauth_keyval pairs[npairs]; +} +