├── .gitignore ├── Gemfile ├── LICENSE ├── README.md ├── Rakefile ├── client.rb ├── fw-piercer.gemspec ├── generate_cert.rb ├── lib ├── firewall_piercer.rb └── firewall_piercer │ ├── client.rb │ ├── client │ ├── socks_server.rb │ ├── tls_client.rb │ └── transport_server.rb │ ├── server.rb │ ├── utils │ ├── http_connect.rb │ ├── server.rb │ ├── socket_connector.rb │ ├── socks │ │ ├── client.rb │ │ ├── constants.rb │ │ └── server.rb │ └── tls_server.rb │ └── version.rb └── server.rb /.gitignore: -------------------------------------------------------------------------------- 1 | /.bundle/ 2 | /.yardoc 3 | /Gemfile.lock 4 | /_yardoc/ 5 | /coverage/ 6 | /doc/ 7 | /pkg/ 8 | /spec/reports/ 9 | /tmp/ 10 | *.bundle 11 | *.so 12 | *.o 13 | *.a 14 | mkmf.log 15 | .idea/ 16 | *.crt 17 | *.pem 18 | *.iml 19 | -------------------------------------------------------------------------------- /Gemfile: -------------------------------------------------------------------------------- 1 | source 'https://rubygems.org' 2 | 3 | gemspec 4 | 5 | gem 'debase' 6 | gem 'ruby-debug-ide' 7 | -------------------------------------------------------------------------------- /LICENSE: -------------------------------------------------------------------------------- 1 | GNU GENERAL PUBLIC LICENSE 2 | Version 3, 29 June 2007 3 | 4 | Copyright (C) 2007 Free Software Foundation, Inc. 5 | Everyone is permitted to copy and distribute verbatim copies 6 | of this license document, but changing it is not allowed. 7 | 8 | Preamble 9 | 10 | The GNU General Public License is a free, copyleft license for 11 | software and other kinds of works. 12 | 13 | The licenses for most software and other practical works are designed 14 | to take away your freedom to share and change the works. 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Limitation of Liability. 601 | 602 | IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING 603 | WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS 604 | THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY 605 | GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE 606 | USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF 607 | DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD 608 | PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS), 609 | EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF 610 | SUCH DAMAGES. 611 | 612 | 17. Interpretation of Sections 15 and 16. 613 | 614 | If the disclaimer of warranty and limitation of liability provided 615 | above cannot be given local legal effect according to their terms, 616 | reviewing courts shall apply local law that most closely approximates 617 | an absolute waiver of all civil liability in connection with the 618 | Program, unless a warranty or assumption of liability accompanies a 619 | copy of the Program in return for a fee. 620 | 621 | END OF TERMS AND CONDITIONS 622 | 623 | How to Apply These Terms to Your New Programs 624 | 625 | If you develop a new program, and you want it to be of the greatest 626 | possible use to the public, the best way to achieve this is to make it 627 | free software which everyone can redistribute and change under these terms. 628 | 629 | To do so, attach the following notices to the program. It is safest 630 | to attach them to the start of each source file to most effectively 631 | state the exclusion of warranty; and each file should have at least 632 | the "copyright" line and a pointer to where the full notice is found. 633 | 634 | 635 | Copyright (C) 636 | 637 | This program is free software: you can redistribute it and/or modify 638 | it under the terms of the GNU General Public License as published by 639 | the Free Software Foundation, either version 3 of the License, or 640 | (at your option) any later version. 641 | 642 | This program is distributed in the hope that it will be useful, 643 | but WITHOUT ANY WARRANTY; without even the implied warranty of 644 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 645 | GNU General Public License for more details. 646 | 647 | You should have received a copy of the GNU General Public License 648 | along with this program. If not, see . 649 | 650 | Also add information on how to contact you by electronic and paper mail. 651 | 652 | If the program does terminal interaction, make it output a short 653 | notice like this when it starts in an interactive mode: 654 | 655 | Copyright (C) 656 | This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'. 657 | This is free software, and you are welcome to redistribute it 658 | under certain conditions; type `show c' for details. 659 | 660 | The hypothetical commands `show w' and `show c' should show the appropriate 661 | parts of the General Public License. Of course, your program's commands 662 | might be different; for a GUI interface, you would use an "about box". 663 | 664 | You should also get your employer (if you work as a programmer) or school, 665 | if any, to sign a "copyright disclaimer" for the program, if necessary. 666 | For more information on this, and how to apply and follow the GNU GPL, see 667 | . 668 | 669 | The GNU General Public License does not permit incorporating your program 670 | into proprietary programs. If your program is a subroutine library, you 671 | may consider it more useful to permit linking proprietary applications with 672 | the library. If this is what you want to do, use the GNU Lesser General 673 | Public License instead of this License. But first, please read 674 | . 675 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # Firewall Piercer 2 | 3 | This application create a SOCKS5 over TLS server, allowing bypass of a facist firewall. 4 | 5 | This application also provide client side a SOCKS5 server, a transparent proxy and can use HTTPS proxy to exit. 6 | 7 | Can replace Tor if Tor « side effects » (random output IP, latency…) is not acceptable, but your privacy is not protected this way ! 8 | 9 | ## Installation 10 | 11 | Require Ruby 2.0.0 or later. 12 | 13 | No external ruby dependency. 14 | 15 | Just clone this repo :) 16 | 17 | ## Usage 18 | 19 | ### Certificates 20 | 21 | The client/server communications are protected with TLS and need certificates. 22 | 23 | The server strongly authenticate the client with it X.509 certificate. 24 | 25 | You can use any X.509 certificates you want, but for easy deployment, there is a `generate_cert.rb` script to generate 26 | client/server keys and certificates. 27 | 28 | ### Server side 29 | 30 | Just run the `server.rb` 31 | 32 | By default, the server run on the 443 port. 33 | You can edit the script to select keys/certificates and port to use. 34 | 35 | ### Client side 36 | 37 | Just run the `client.rb` 38 | 39 | By default, the client start a SOCKS5 server on 1080 port and a transparent proxy server on 1081. 40 | You can edit the script to select keys/certificates and port to use. 41 | 42 | If you have to use a HTTPS proxy server, fill PROXY_HOST and PROXY_PORT. 43 | Currently proxy authentication is not supported. 44 | 45 | Just point applications supporting SOCKS5 to the SOCKS port. 46 | 47 | If your application don’t support SOCKS5, you can use `iptables` to redirect all the traffic to the server, for example : 48 | 49 | iptables -t nat -A OUTPUT -p tcp --dport ssh --syn -j REDIRECT --to-ports 1081 50 | 51 | ## License 52 | 53 | This software is released under GPLv3 or later license. 54 | 55 | # Todo 56 | 57 | * Boot script (SysV/SystemD) 58 | * Config file 59 | * Improve logging 60 | 61 | # Contributing 62 | 63 | 1. Fork it ( https://github.com/aeris/firewall-piercer/fork ) 64 | 2. Create your feature branch (`git checkout -b my-new-feature`) 65 | 3. Commit your changes (`git commit -am 'Add some feature'`) 66 | 4. Push to the branch (`git push origin my-new-feature`) 67 | 5. Create a new Pull Request 68 | 69 | # I am Charlie 70 | 71 | In memory of 72 | 73 | * Charb 74 | * Cabu 75 | * Wolinski 76 | * Tignous 77 | * Bernard Maris 78 | * Michel Renaud 79 | * Honoré 80 | * Mustapha Ourad 81 | * Ahmed Merabet 82 | * Franck Brinsolaro 83 | * Frédéric Boisseau 84 | * Elsa Cayat 85 | 86 | cartoonists, journalists, police officers or citizens, killed this 01/07/2015 for defending freedom speech. 87 | 88 | Just my very tiny contribution for defending this kind of freedom on this world, compared to theirs… 89 | -------------------------------------------------------------------------------- /Rakefile: -------------------------------------------------------------------------------- 1 | require "bundler/gem_tasks" 2 | 3 | -------------------------------------------------------------------------------- /client.rb: -------------------------------------------------------------------------------- 1 | #!/usr/bin/env ruby 2 | $:.unshift 'lib' 3 | require 'firewall_piercer' 4 | require 'openssl' 5 | 6 | key = OpenSSL::PKey.read File.new 'server.pem' 7 | cert = OpenSSL::X509::Certificate.new File.new 'server.crt' 8 | ca = File.join Dir.pwd, 'server.crt' 9 | 10 | TRANS_HOST, TRANS_PORT = %w(127.0.0.1 ::1), 1081 11 | SOCKS_HOST, SOCKS_PORT = %w(127.0.0.1 ::1), 1080 12 | HTTP_PROXY_HOST, HTTP_PROXY_PORT = 'http.proxy.internal', 3128 13 | PROXY_HOST, PROXY_PORT = 'socks.proxy.external', 443 14 | 15 | server = FirewallPiercer::Client.new socks_host: SOCKS_HOST, socks_port: SOCKS_PORT, 16 | trans_host: TRANS_HOST, trans_port: TRANS_PORT, 17 | server_host: PROXY_HOST, server_port: PROXY_PORT, 18 | key: key, cert: cert, ca: ca, 19 | http_proxy_host: HTTP_PROXY_HOST, http_proxy_port: HTTP_PROXY_PORT 20 | server.start 21 | trap('INT') { server.stop; exit } 22 | sleep 23 | -------------------------------------------------------------------------------- /fw-piercer.gemspec: -------------------------------------------------------------------------------- 1 | # coding: utf-8 2 | lib = File.expand_path('../lib', __FILE__) 3 | $LOAD_PATH.unshift(lib) unless $LOAD_PATH.include?(lib) 4 | require 'firewall_piercer/version' 5 | 6 | Gem::Specification.new do |spec| 7 | spec.name = 'fw-piercer' 8 | spec.version = FirewallPiercer::VERSION 9 | spec.authors = %w(Aeris) 10 | spec.email = %w(aeris@imirhil.fr) 11 | spec.summary = %q{} 12 | spec.description = %q{} 13 | spec.homepage = '' 14 | spec.license = 'GPLv3+' 15 | 16 | spec.files = `git ls-files -z`.split("\x0") 17 | spec.executables = spec.files.grep(%r{^bin/}) { |f| File.basename(f) } 18 | spec.test_files = spec.files.grep(%r{^(test|spec|features)/}) 19 | spec.require_paths = %w(lib) 20 | 21 | spec.add_development_dependency 'bundler', '~> 1.7' 22 | spec.add_development_dependency 'rake', '~> 10.0' 23 | end 24 | -------------------------------------------------------------------------------- /generate_cert.rb: -------------------------------------------------------------------------------- 1 | #!/usr/bin/env ruby 2 | $:.unshift 'lib' 3 | require 'openssl' 4 | 5 | unless File.exist? 'server.pem' 6 | key = OpenSSL::PKey::RSA.new 4096 7 | File.write 'server.pem', key.to_pem 8 | end 9 | 10 | unless File.exist? 'server.cert' 11 | key = OpenSSL::PKey.read File.new 'server.pem' 12 | 13 | name = OpenSSL::X509::Name.parse 'CN=*.your.domain.name' 14 | cert = OpenSSL::X509::Certificate.new 15 | cert.version = 2 16 | cert.serial = 0 17 | cert.not_before = Time.now 18 | cert.not_after = Time.now + 60*60*24*365 19 | cert.public_key = key 20 | cert.subject = name 21 | cert.issuer = name 22 | 23 | extension_factory = OpenSSL::X509::ExtensionFactory.new nil, cert 24 | extension_factory.subject_certificate = cert 25 | extension_factory.issuer_certificate = cert 26 | 27 | cert.add_extension extension_factory.create_extension 'basicConstraints', 'CA:TRUE', true 28 | cert.add_extension extension_factory.create_extension 'keyUsage', 'keyEncipherment,dataEncipherment,digitalSignature,nonRepudiation,keyCertSign' 29 | cert.add_extension extension_factory.create_extension 'extendedKeyUsage', 'serverAuth,clientAuth' 30 | cert.add_extension extension_factory.create_extension 'subjectKeyIdentifier', 'hash' 31 | cert.add_extension extension_factory.create_extension 'authorityKeyIdentifier', 'keyid:always' 32 | cert.add_extension extension_factory.create_extension 'subjectAltName', 'DNS:localhost' 33 | 34 | cert.sign key, OpenSSL::Digest::SHA512.new 35 | File.write 'server.crt', cert.to_pem 36 | end 37 | -------------------------------------------------------------------------------- /lib/firewall_piercer.rb: -------------------------------------------------------------------------------- 1 | require 'openssl' 2 | 3 | module FirewallPiercer 4 | autoload :Client, 'firewall_piercer/client' 5 | autoload :Server, 'firewall_piercer/server' 6 | autoload :TlsServer, 'firewall_piercer/server' 7 | 8 | module Utils 9 | autoload :HttpConnect, 'firewall_piercer/utils/http_connect' 10 | autoload :Server, 'firewall_piercer/utils/server' 11 | autoload :SocketConnector, 'firewall_piercer/utils/socket_connector' 12 | autoload :TlsServer, 'firewall_piercer/utils/tls_server' 13 | 14 | module Socks 15 | require 'firewall_piercer/utils/socks/constants' 16 | autoload :Client, 'firewall_piercer/utils/socks/client' 17 | autoload :Server, 'firewall_piercer/utils/socks/server' 18 | end 19 | end 20 | 21 | class Client 22 | autoload :SocksServer, 'firewall_piercer/client/socks_server' 23 | autoload :TransportServer, 'firewall_piercer/client/transport_server' 24 | autoload :TlsClient, 'firewall_piercer/client/tls_client' 25 | end 26 | end 27 | -------------------------------------------------------------------------------- /lib/firewall_piercer/client.rb: -------------------------------------------------------------------------------- 1 | require 'openssl' 2 | 3 | module FirewallPiercer 4 | class Client 5 | def initialize(socks_host: %w(127.0.0.1 ::1), socks_port: 1080, 6 | trans_host: %w(127.0.0.1 ::1), trans_port: 1081, 7 | server_host: nil, server_port: 443, 8 | key: nil, cert: nil, ca: ca, method: :TLSv1_2_client, ciphers: 'ECDH+AES:EDH+AES:!SHA:@STRENGTH', 9 | http_proxy_host: nil, http_proxy_port: nil) 10 | @servers = [] 11 | tls_client = TlsClient.new server_host: server_host, server_port: server_port, 12 | key: key, cert: cert, ca: ca, method: method, ciphers: ciphers, 13 | http_proxy_host: http_proxy_host, http_proxy_port: http_proxy_port 14 | (socks_host || []).each { |h| @servers << SocksServer.new(tls_client, host: h, port: socks_port) } 15 | (trans_host || []).each { |h| @servers << TransportServer.new(tls_client, host: h, port: trans_port) } 16 | end 17 | 18 | def start 19 | @servers.each { |s| s.start } 20 | end 21 | 22 | def stop 23 | @servers.each { |s| s.stop } 24 | end 25 | end 26 | end 27 | -------------------------------------------------------------------------------- /lib/firewall_piercer/client/socks_server.rb: -------------------------------------------------------------------------------- 1 | require 'openssl' 2 | 3 | module FirewallPiercer 4 | class Client 5 | class SocksServer < FirewallPiercer::Utils::Server 6 | def initialize(client, host: nil, port: 1080) 7 | super host: host, port: port 8 | @client = client 9 | end 10 | 11 | def serve(client) 12 | puts "SOCKS5 server #{@host}/#{@port} : incoming" 13 | socket, tls_socket = @client.open 14 | FirewallPiercer::Utils::SocketConnector.connect tls_socket, client 15 | rescue => e 16 | puts "SOCKS5 server #{@host}/#{@port}: error #{e}" 17 | raise 18 | ensure 19 | [tls_socket, socket].each { |s| s.close if s and !s.closed? } 20 | puts "SOCKS5 server #{@host}/#{@port} : end" 21 | end 22 | end 23 | end 24 | end 25 | -------------------------------------------------------------------------------- /lib/firewall_piercer/client/tls_client.rb: -------------------------------------------------------------------------------- 1 | require 'openssl' 2 | require 'socket' 3 | 4 | module FirewallPiercer 5 | class Client 6 | class TlsClient 7 | def initialize(server_host: nil, server_port: 443, 8 | key: nil, cert: nil, ca: ca, method: :TLSv1_2_client, ciphers: 'ECDH+AES:EDH+AES:!SHA:@STRENGTH', 9 | http_proxy_host: nil, http_proxy_port: nil) 10 | @server_host, @server_port = server_host, server_port 11 | 12 | @tls_context = method ? OpenSSL::SSL::SSLContext.new : OpenSSL::SSL::SSLContext.new(method) 13 | @tls_context.key = key if key 14 | @tls_context.cert = cert if cert 15 | if ca 16 | @tls_context.ca_file = ca 17 | @tls_context.verify_mode = OpenSSL::SSL::VERIFY_PEER | OpenSSL::SSL::VERIFY_FAIL_IF_NO_PEER_CERT 18 | end 19 | @tls_context.ciphers = ciphers if ciphers 20 | 21 | @http_proxy_host, @http_proxy_port = http_proxy_host, http_proxy_port 22 | end 23 | 24 | def open 25 | puts "TLS SOCKS5 client #{@server_host}/#{@server_port} : connecting" 26 | socket = if @http_proxy_host 27 | puts "TLS SOCKS5 client #{@server_host}/#{@server_port} : using #{@http_proxy_host}/#{@http_proxy_port} HTTPS proxy" 28 | socket = TCPSocket.new @http_proxy_host, @http_proxy_port 29 | FirewallPiercer::Utils::HttpConnect.connect socket, @server_host, @server_port 30 | else 31 | TCPSocket @server_host, @server_port 32 | end 33 | puts "TLS SOCKS5 client #{@server_host}/#{@server_port} : TCP connected" 34 | tls_socket = OpenSSL::SSL::SSLSocket.new socket, @tls_context 35 | tls_socket.hostname = @server_host 36 | tls_socket.connect 37 | puts "TLS SOCKS5 client #{@server_host}/#{@server_port} : TLS connected" 38 | [socket, tls_socket] 39 | end 40 | end 41 | end 42 | end 43 | -------------------------------------------------------------------------------- /lib/firewall_piercer/client/transport_server.rb: -------------------------------------------------------------------------------- 1 | require 'ipaddr' 2 | require 'openssl' 3 | require 'socket' 4 | 5 | module FirewallPiercer 6 | class Client 7 | class TransportServer < FirewallPiercer::Utils::Server 8 | SO_ORIGINAL_DST = 80 9 | IP6T_SO_ORIGINAL_DST = 80 10 | SOL_IPV6 = 41 11 | 12 | def initialize(client, host: nil, port: 1081) 13 | super host: host, port: port 14 | @client = client 15 | end 16 | 17 | def serve(client) 18 | puts "Transport server #{@host}/#{@port}: incoming client" 19 | family = client.addr[0] 20 | family, level, name = case family 21 | when 'AF_INET' then 22 | [:ipv4, Socket::SOL_IP, SO_ORIGINAL_DST] 23 | when 'AF_INET6' then 24 | [:ipv6, SOL_IPV6, IP6T_SO_ORIGINAL_DST] 25 | end 26 | port, host = Socket.unpack_sockaddr_in client.getsockopt(level, name).data 27 | puts "Transport server #{@host}/#{@port} : request #{host}/#{port}" 28 | socket, tls_socket = @client.open 29 | FirewallPiercer::Utils::Socks::Client.connect tls_socket, family, host, port 30 | FirewallPiercer::Utils::SocketConnector.connect tls_socket, client 31 | puts "Transport server #{@host}/#{@port} to #{host}/#{port} : end" 32 | ensure 33 | [tls_socket, socket].each { |s| s.close if s and !s.closed? } 34 | end 35 | end 36 | end 37 | end 38 | -------------------------------------------------------------------------------- /lib/firewall_piercer/server.rb: -------------------------------------------------------------------------------- 1 | module FirewallPiercer 2 | class Server < FirewallPiercer::Utils::Server 3 | def serve(socket) 4 | FirewallPiercer::Utils::Socks::Server.new(socket).process 5 | end 6 | end 7 | 8 | class TlsServer < FirewallPiercer::Utils::TlsServer 9 | def serve(socket) 10 | FirewallPiercer::Utils::Socks::Server.new(socket).process 11 | end 12 | end 13 | end 14 | -------------------------------------------------------------------------------- /lib/firewall_piercer/utils/http_connect.rb: -------------------------------------------------------------------------------- 1 | module FirewallPiercer 2 | module Utils 3 | module HttpConnect 4 | class ConnectException < Exception 5 | end 6 | 7 | def self.connect(socket, hostname, port) 8 | socket.write "CONNECT #{hostname}:#{port} HTTP/1.0\r\n\r\n" 9 | data = socket.gets 10 | raise ConnectException.new, "Unexpected response: #{data}" unless data =~ %r{\AHTTP/1\.[01] 200 .*Connection established\r\n}m 11 | until socket.gets == "\r\n" 12 | end 13 | socket 14 | end 15 | end 16 | end 17 | end 18 | -------------------------------------------------------------------------------- /lib/firewall_piercer/utils/server.rb: -------------------------------------------------------------------------------- 1 | require 'socket' 2 | require 'thread' 3 | 4 | module FirewallPiercer 5 | module Utils 6 | class Server 7 | class StopException < Exception 8 | end 9 | 10 | def initialize(host: nil, port: 1080) 11 | @host, @port = host, port 12 | @server = TCPServer.new host, port 13 | puts "New server : #{@host}/#{@port}" 14 | end 15 | 16 | def accept 17 | @server.accept 18 | end 19 | 20 | def close 21 | @server.close unless @server.closed? 22 | end 23 | 24 | def start 25 | puts "Server #{@host}/#{@port} : starting" 26 | @thread = Thread.new do 27 | loop do 28 | puts "Server #{@host}/#{@port} : waiting incoming resquest" 29 | begin 30 | Thread.new(accept) do |s| 31 | begin 32 | serve s 33 | ensure 34 | s.close 35 | end 36 | end 37 | rescue StopException 38 | break 39 | rescue => e 40 | puts "Server #{@host}/#{@port} : error #{e}" 41 | end 42 | end 43 | end 44 | puts "Server #{@host}/#{@port} : started" 45 | end 46 | 47 | def stop 48 | puts "Server #{@host}/#{@port} : stopping" 49 | if @thread 50 | @thread.raise StopException.new 51 | @thread.join 52 | end 53 | close 54 | puts "Server #{@host}/#{@port} : stopped" 55 | end 56 | end 57 | end 58 | end 59 | -------------------------------------------------------------------------------- /lib/firewall_piercer/utils/socket_connector.rb: -------------------------------------------------------------------------------- 1 | require 'thread' 2 | require 'thwait' 3 | 4 | module FirewallPiercer 5 | module Utils 6 | class SocketConnector 7 | def self.connect(socket1, socket2) 8 | threads = [ 9 | Thread.new { pair_connect socket1, socket2 }, 10 | Thread.new { pair_connect socket2, socket1 } 11 | ] 12 | waiting = ThreadsWait.new *threads 13 | waiting.join 14 | threads.each { |t| t.raise 'stop' } 15 | waiting.all_waits 16 | end 17 | 18 | private 19 | def self.pair_connect(src, dest) 20 | loop { dest.write src.readpartial 1024 } 21 | end 22 | end 23 | end 24 | end 25 | -------------------------------------------------------------------------------- /lib/firewall_piercer/utils/socks/client.rb: -------------------------------------------------------------------------------- 1 | require 'ipaddr' 2 | require 'socket' 3 | require 'thwait' 4 | 5 | module FirewallPiercer 6 | module Utils 7 | module Socks 8 | module Client 9 | def self.connect(socket, type, host, port) 10 | puts "SOCKS5 client #{type}/#{host}/#{port} : send version" 11 | socket.write [SOCKS_VERSION, 1, NO_AUTHENTICATION_REQUIRED].pack 'CCC' 12 | data = socket.read 2 13 | version, method = data.unpack 'CC' 14 | puts "SOCKS5 client #{type}/#{host}/#{port} : receive version" 15 | raise Exception, data unless version == SOCKS_VERSION and method == NO_AUTHENTICATION_REQUIRED 16 | 17 | t, target = case type 18 | when :ipv4 then 19 | [IPv4, IPAddr.new(host).hton] 20 | when :ipv6 then 21 | [IPv6, IPAddr.new(host).hton] 22 | when :domain then 23 | [DOMAIN_NAME, host] 24 | end 25 | puts "SOCKS5 client #{type}/#{host}/#{port} : connect" 26 | socket.write [SOCKS_VERSION, CONNECT, RSV, t, target, port].pack 'CCCCa*S>' 27 | 28 | data = socket.read 4 29 | version, reply, rsv, t = data.unpack 'CCCC' 30 | raise Exception, data unless version == SOCKS_VERSION and reply == SUCCEEDED and rsv == RSV 31 | 32 | case t 33 | when IPv4 34 | socket.read 4 35 | when DOMAIN_NAME 36 | size, _ = socket.read(1).unpack 'C' 37 | socket.read size 38 | when IPv6 39 | socket.read 16 40 | end 41 | socket.read 2 42 | puts "SOCKS5 client #{type}/#{host}/#{port} : connected" 43 | 44 | socket 45 | end 46 | end 47 | end 48 | end 49 | end 50 | -------------------------------------------------------------------------------- /lib/firewall_piercer/utils/socks/constants.rb: -------------------------------------------------------------------------------- 1 | module FirewallPiercer 2 | module Utils 3 | module Socks 4 | SOCKS_VERSION = 0x05 5 | 6 | NO_AUTHENTICATION_REQUIRED = 0x00 7 | GSSAPI = 0x01 8 | USERNAME_PASSWORD = 0x02 9 | AUTHENTICATION_METHODS = [NO_AUTHENTICATION_REQUIRED] 10 | NO_ACCEPTABLE_METHODS = 0xFF 11 | 12 | CONNECT = 0x01 13 | BIND = 0x02 14 | UDP_ASSOCIATE = 0x03 15 | COMMANDS = [CONNECT] 16 | 17 | IPv4 = 0x01 18 | DOMAIN_NAME = 0x03 19 | IPv6 = 0x04 20 | TYPES = [IPv4, DOMAIN_NAME, IPv6] 21 | 22 | SUCCEEDED = 0x00 23 | SOCKS_SERVER_FAILURE = 0x01 24 | CONNECTION_NOT_ALLOWED_BY_RULESET = 0x02 25 | NETWORK_UNREACHABLE = 0x03 26 | HOST_UNREACHABLE = 0x04 27 | CONNECTION_REFUSED = 0x05 28 | TTL_EXPIRED = 0x06 29 | COMMAND_NOT_SUPPORTED = 0x07 30 | ADDRESS_TYPE_NOT_SUPPORTED = 0x08 31 | 32 | RSV = 0x00 33 | end 34 | end 35 | end 36 | -------------------------------------------------------------------------------- /lib/firewall_piercer/utils/socks/server.rb: -------------------------------------------------------------------------------- 1 | require 'ipaddr' 2 | require 'socket' 3 | require 'thwait' 4 | 5 | module FirewallPiercer 6 | module Utils 7 | module Socks 8 | class Server 9 | def initialize(socket) 10 | @socket, @target = socket, socket.peeraddr 11 | puts "New SOCKS5 server : #{self.to_s}" 12 | end 13 | 14 | def process 15 | puts "SOCKS5 server #{self.to_s} : waiting version" 16 | data = @socket.read 2 17 | version, n_methods = data.unpack 'CC' 18 | puts "SOCKS5 server #{self.to_s} : receive version #{version}" 19 | raise Exception, data unless version == SOCKS_VERSION 20 | puts "SOCKS5 server #{self.to_s} : waiting methods" 21 | data = @socket.read n_methods 22 | methods = data.unpack('C*') 23 | puts "SOCKS5 server #{self.to_s} : receive methods #{methods}" 24 | method = (AUTHENTICATION_METHODS & methods).first || NO_ACCEPTABLE_METHODS 25 | @socket.write [SOCKS_VERSION, method].pack 'CC' 26 | puts "SOCKS5 server #{self.to_s} : select method #{method}" 27 | return if method == NO_ACCEPTABLE_METHODS 28 | 29 | puts "SOCKS5 server #{self.to_s} : waiting command" 30 | data = @socket.read 4 31 | version, command, rsv, type = data.unpack 'CCCC' 32 | puts "SOCKS5 server #{self.to_s} : receive command #{command}, type #{type}" 33 | unless version == SOCKS_VERSION and COMMANDS.include?(command) and rsv == RSV and TYPES.include?(type) 34 | return 35 | end 36 | puts "SOCKS5 server #{self.to_s} : waiting target" 37 | target = case type 38 | when IPv4 then 39 | IPAddr::ntop @socket.read 4 40 | when DOMAIN_NAME 41 | size, _ = @socket.read(1).unpack 'C' 42 | @socket.read size 43 | when IPv6 44 | IPAddr::ntop @socket.read 16 45 | end 46 | port, _ = @socket.read(2).unpack 'S>' 47 | puts "SOCKS5 server #{self.to_s} : receive target #{target}, type #{port}" 48 | case command 49 | when CONNECT 50 | begin 51 | puts "SOCKS5 server #{self.to_s} : connecting to #{target}/#{port}" 52 | @client_socket = TCPSocket.new target, port 53 | status = SUCCEEDED 54 | puts "SOCKS5 server #{self.to_s} : connected to #{target}/#{port}" 55 | rescue Errno::ENETUNREACH 56 | puts "SOCKS5 server #{self.to_s} : #{target}/#{port} network unreachable" 57 | status = NETWORK_UNREACHABLE 58 | rescue Errno::EHOSTUNREACH 59 | puts "SOCKS5 server #{self.to_s} : #{target}/#{port} host unreachable" 60 | status = HOST_UNREACHABLE 61 | rescue Errno::ECONNREFUSED 62 | puts "SOCKS5 server #{self.to_s} : #{target}/#{port} connection refused" 63 | status = CONNECTION_REFUSED 64 | rescue => e 65 | puts "SOCKS5 server #{self.to_s} : #{target}/#{port} error #{e}" 66 | status = SOCKS_SERVER_FAILURE 67 | end 68 | bind_addr, bind_port = IPAddr.new('0.0.0.0').hton, 0 69 | @socket.write [SOCKS_VERSION, status, RSV, IPv4, bind_addr, bind_port].pack 'CCCCa*S>' 70 | raise Exception, status unless status == SUCCEEDED 71 | 72 | begin 73 | puts "SOCKS5 server #{self.to_s} : connecting sockets" 74 | FirewallPiercer::Utils::SocketConnector.connect @socket, @client_socket 75 | ensure 76 | @client_socket.close unless @client_socket.closed? 77 | end 78 | end 79 | ensure 80 | @socket.close unless @socket.closed? 81 | puts "SOCKS5 server #{self.to_s} : end" 82 | end 83 | 84 | def stop 85 | puts "SOCKS5 server #{self.to_s} : stopping" 86 | close 87 | @thread.wait unless @thread.nil? 88 | puts "SOCKS5 server #{self.to_s} : stopped" 89 | end 90 | 91 | def to_s 92 | "#{@target[2]}/#{@target[1]}" 93 | end 94 | 95 | private 96 | def connect(src, dest, name) 97 | loop { dest.write src.readpartial 1024 } 98 | ensure 99 | puts "SOCKS5 server #{self.to_s} : #{name} socket end" 100 | end 101 | 102 | def close 103 | @client_socket.close unless @client_socket.nil? or @client_socket.closed? 104 | @socket.close unless @socket.closed? 105 | end 106 | end 107 | end 108 | end 109 | end 110 | -------------------------------------------------------------------------------- /lib/firewall_piercer/utils/tls_server.rb: -------------------------------------------------------------------------------- 1 | require 'socket' 2 | require 'thread' 3 | 4 | module FirewallPiercer 5 | module Utils 6 | class TlsServer < Server 7 | def initialize(host: nil, port: nil, key: nil, cert: nil, ca: ca, method: :TLSv1_2_server, ciphers: 'ECDH+AES:EDH+AES:!SHA:@STRENGTH') 8 | super host: host, port: port 9 | 10 | tls_context = method ? OpenSSL::SSL::SSLContext.new : OpenSSL::SSL::SSLContext.new(method) 11 | tls_context.key = key if key 12 | tls_context.cert = cert if cert 13 | if ca 14 | tls_context.ca_file = ca 15 | tls_context.verify_mode = OpenSSL::SSL::VERIFY_PEER | OpenSSL::SSL::VERIFY_FAIL_IF_NO_PEER_CERT 16 | end 17 | tls_context.ciphers = ciphers if ciphers 18 | tls_context.options = OpenSSL::SSL::OP_CIPHER_SERVER_PREFERENCE | OpenSSL::SSL::OP_NO_COMPRESSION 19 | 20 | @tls_server = OpenSSL::SSL::SSLServer.new @server, tls_context 21 | end 22 | 23 | def accept 24 | @tls_server.accept 25 | end 26 | 27 | def close 28 | @tls_server.close unless @tls_server.closed? 29 | super 30 | end 31 | end 32 | end 33 | end 34 | -------------------------------------------------------------------------------- /lib/firewall_piercer/version.rb: -------------------------------------------------------------------------------- 1 | module FirewallPiercer 2 | VERSION = '0.0.1' 3 | end 4 | -------------------------------------------------------------------------------- /server.rb: -------------------------------------------------------------------------------- 1 | #!/usr/bin/env ruby 2 | $:.unshift 'lib' 3 | require 'firewall_piercer' 4 | require 'openssl' 5 | 6 | key = OpenSSL::PKey.read File.new 'server.pem' 7 | cert = OpenSSL::X509::Certificate.new File.new 'server.crt' 8 | ca = File.join Dir.pwd, 'server.crt' 9 | 10 | TLS_HOST, TLS_PORT = %w(::), 443 11 | 12 | servers = TLS_HOST.collect do |h| 13 | server = FirewallPiercer::TlsServer.new host: h, port: TLS_PORT, key: key, cert: cert, ca: ca 14 | server.start 15 | server 16 | end 17 | trap('INT') do 18 | servers.each { |s| s.stop } 19 | exit 20 | end 21 | sleep 22 | --------------------------------------------------------------------------------