Class: ShadowsocksRuby::Protocols::Socks5Protocol
- Inherits:
-
Object
- Object
- ShadowsocksRuby::Protocols::Socks5Protocol
- Includes:
- DummyHelper
- Defined in:
- lib/shadowsocks_ruby/protocols/packet/socks5.rb
Overview
Note:
Now only implemented the server side protocol, not the client side protocol.
SOCKS 5 protocol
specification :
Constant Summary collapse
- METHOD_NO_AUTH =
0
- CMD_CONNECT =
1
- REP_SUCCESS =
0
- RESERVED =
0
- ATYP_IPV4 =
1
- ATYP_DOMAIN =
3
- ATYP_IPV6 =
4
- SOCKS5 =
5
Instance Attribute Summary collapse
-
#next_protocol ⇒ Object
Returns the value of attribute next_protocol.
Instance Method Summary collapse
-
#initialize(params = {}) ⇒ Socks5Protocol
constructor
A new instance of Socks5Protocol.
- #tcp_receive_from_client_first_packet(n) ⇒ Object (also: #tcp_receive_from_client)
- #tcp_receive_from_client_other_packet(n) ⇒ Object
- #tcp_receive_from_localbackend_first_packet(n) ⇒ Object (also: #tcp_receive_from_localbackend)
- #tcp_receive_from_localbackend_other_packet(n) ⇒ Object
- #tcp_send_to_client(data) ⇒ Object
- #tcp_send_to_localbackend(data) ⇒ Object
Methods included from DummyHelper
#async_recv, #raise_me, #send_data
Constructor Details
#initialize(params = {}) ⇒ Socks5Protocol
Returns a new instance of Socks5Protocol.
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# File 'lib/shadowsocks_ruby/protocols/packet/socks5.rb', line 26 def initialize params = {} @params = {}.merge(params) end |
Instance Attribute Details
#next_protocol ⇒ Object
Returns the value of attribute next_protocol.
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# File 'lib/shadowsocks_ruby/protocols/packet/socks5.rb', line 14 def next_protocol @next_protocol end |
Instance Method Details
#tcp_receive_from_client_first_packet(n) ⇒ Object Also known as: tcp_receive_from_client
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# File 'lib/shadowsocks_ruby/protocols/packet/socks5.rb', line 30 def tcp_receive_from_client_first_packet n # check version version = async_recv(1).unpack("C").first if version != SOCKS5 raise PharseError, "SOCKS version not supported: #{version.inspect}" end # client handshake v5 nmethods = async_recv(1).unpack("C").first *methods = async_recv(nmethods).unpack("C*") if methods.include?(METHOD_NO_AUTH) packet = [SOCKS5, METHOD_NO_AUTH].pack("C*") send_data packet else raise PharseError, 'Unsupported authentication method. Only "No Authentication" is supported' end version, command, reserved = async_recv(3).unpack("C3") buf ='' buf << (s = async_recv(1)) address_type = s.unpack("C").first case address_type when ATYP_IPV4 buf << async_recv(4) when ATYP_IPV6 buf << async_recv(16) when ATYP_DOMAIN buf << (s = async_recv(1)) domain_len = s.unpack("C").first buf << async_recv(domain_len) buf << async_recv(2) # port else raise PharseError, "unknown address_type: #{address_type}" end packet = ([SOCKS5, REP_SUCCESS, RESERVED, 1, 0, 0, 0, 0, 0]).pack("C8n") send_data packet class << self alias tcp_receive_from_client tcp_receive_from_client_other_packet end # first packet is special: # ATYP + Destination Address + Destination Port buf end |
#tcp_receive_from_client_other_packet(n) ⇒ Object
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# File 'lib/shadowsocks_ruby/protocols/packet/socks5.rb', line 78 def tcp_receive_from_client_other_packet n async_recv(n) end |
#tcp_receive_from_localbackend_first_packet(n) ⇒ Object Also known as: tcp_receive_from_localbackend
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# File 'lib/shadowsocks_ruby/protocols/packet/socks5.rb', line 86 def tcp_receive_from_localbackend_first_packet n # check version version = async_recv(1).unpack("C").first if version != SOCKS5 raise PharseError, "SOCKS version not supported: #{version.inspect}" end # client handshake v5 nmethods = async_recv(1).unpack("C").first *methods = async_recv(nmethods).unpack("C*") if methods.include?(METHOD_NO_AUTH) packet = [SOCKS5, METHOD_NO_AUTH].pack("C*") send_data packet else raise PharseError, 'Unsupported authentication method. Only "No Authentication" is supported' end version, command, reserved = async_recv(3).unpack("C3") buf ='' buf << (s = async_recv(1)) address_type = s.unpack("C").first case address_type when ATYP_IPV4 buf << async_recv(4) when ATYP_IPV6 buf << async_recv(16) when ATYP_DOMAIN buf << (s = async_recv(1)) domain_len = s.unpack("C").first buf << async_recv(domain_len) buf << async_recv(2) # port else raise PharseError, "unknown address_type: #{address_type}" end packet = ([SOCKS5, REP_SUCCESS, RESERVED, 1, 0, 0, 0, 0, 0]).pack("C8n") send_data packet class << self alias tcp_receive_from_localbackend tcp_receive_from_localbackend_other_packet end # first packet is special: # ATYP + Destination Address + Destination Port buf end |
#tcp_receive_from_localbackend_other_packet(n) ⇒ Object
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# File 'lib/shadowsocks_ruby/protocols/packet/socks5.rb', line 135 def tcp_receive_from_localbackend_other_packet n async_recv(n) end |
#tcp_send_to_client(data) ⇒ Object
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# File 'lib/shadowsocks_ruby/protocols/packet/socks5.rb', line 82 def tcp_send_to_client data send_data data end |
#tcp_send_to_localbackend(data) ⇒ Object
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# File 'lib/shadowsocks_ruby/protocols/packet/socks5.rb', line 139 def tcp_send_to_localbackend data send_data data end |