shadowsocks-rust

This is a port of shadowsocks.

shadowsocks is a fast tunnel proxy that helps you bypass firewalls.

Dependencies

• libcrypto (OpenSSL) (Required for aes-cfb-* and rc4 ciphers)
• libsodium >= 1.0.7 (Required for ciphers that are provided by libsodium)

Build & Install

Optional Features

• sodium - Enabled linking to libsodium, which will also enable ciphers that depending on libsodium.

• rc4 - Enabled rc4 encryption algorithm. Some OpenSSL Crypto does not ship with rc4, because it was already deprecated in 2015.

• aes-cfb - Enabled aes-*-cfb encryption algorithm.

• aes-ctr - Enabled aes-*-ctr encryption algorithm.

• camellia-cfb - Enabled camellia-*-cfb encryption algorithm.

• single-threaded - Let sslocal and ssserver run in single threaded mode (by using Tokio's basic_scheduler).

Default features: ["sodium", "rc4", "aes-cfb", "aes-ctr"].

NOTE: To disable dependency of OpenSSL, just disable feature rc4, aes-cfb, aes-ctr, camellia-cfb.

crates.io

Install from crates.io:

cargo install shadowsocks-rust

then you can find sslocal and ssserver in $CARGO_HOME/bin.

Download release

Requirements:

• Linux x86_64

Download static-linked build here.

Build from source

Use cargo to build.

cargo build --release

NOTE: If you haven't installed the correct version of libsodium in your system, you can set a environment variable SODIUM_BUILD_STATIC=yes to let libsodium-ffi to build libsodium from source, which requires you to have build tools (including GCC, libtools, etc.) installed.

SODIUM_BUILD_STATIC=yes cargo build --release

Then sslocal and ssserver will appear in ./target/(debug|release)/, it works similarly as the two binaries in the official ShadowSocks' implementation.

make install TARGET=release

Then sslocal, ssserver and ssurl will be installed in /usr/local/bin (variable PREFIX).

For Windows users, if you have encountered any problem in building, check and discuss in #102.

Build standalone binaries

Requirements:

• Docker

./build/build-release

Then sslocal, ssserver and ssurl will be packaged in

• ./build/shadowsocks-latest-release.x86_64-unknown-linux-musl.tar.gz
• ./build/shadowsocks-latest-release.x86_64-unknown-linux-musl.tar.xz

Read Cargo.toml for more details.

Getting Started

Create a ShadowSocks' configuration file. Example

{
    "server": "my_server_ip",
    "server_port": 8388,
    "local_address": "127.0.0.1",
    "local_port": 1080,
    "password": "mypassword",
    "timeout": 300,
    "method": "aes-256-cfb"
}

Detailed explanation could be found in shadowsocks' documentation.

In shadowsocks-rust, we also have an extended configuration file format, which is able to define more than one servers:

{
    "servers": [
        {
            "address": "127.0.0.1",
            "port": 1080,
            "password": "hello-world",
            "method": "bf-cfb",
            "timeout": 300
        },
        {
            "address": "127.0.0.1",
            "port": 1081,
            "password": "hello-kitty",
            "method": "aes-128-cfb"
        }
    ],
    "local_port": 8388,
    "local_address": "127.0.0.1"
}

The sslocal will use a load balancing algorithm to dispatch packages to all servers.

Start local and server ShadowSocks with If you Build it with Makefile:

sslocal -c config.json
ssserver -c config.json

If you Build it with Cargo:

cargo run --bin sslocal -- -c config.json
cargo run --bin ssserver -- -c config.json

List all available arguments with -h.

Usage

Socks5 Local client

# Read local client configuration from file
sslocal -c /path/to/shadowsocks.json

# Pass all parameters via command line
sslocal -b "127.0.0.1:1080" -s "[::1]:8388" -m "aes-256-gcm" -k "hello-kitty" --plugin "obfs-local" --plugin-opts "obfs=tls"

# Pass server with SIP002 URL
sslocal -b "127.0.0.1:1080" --server-url "ss://YWVzLTI1Ni1nY206cGFzc3dvcmQ@127.0.0.1:8388/?plugin=obfs-local%3Bobfs%3Dtls"

Tunnel Local client

# Read local client configuration from file
# Set 127.0.0.1:8080 as the target for forwarding to
sstunnel -c /path/to/shadowsocks.json -f "127.0.0.1:8080"

sstunnel basically works the same as sslocal, only it doesn't have any client negociation process, just establishes a tunnel to the forward address.

Server

# Read server configuration from file
ssserver -c /path/to/shadowsocks.json

# Pass all parameters via command line
ssserver -s "[::]:8388" -m "aes-256-gcm" -k "hello-kitty" --plugin "obfs-server" --plugin-opts "obfs=tls"

Supported Ciphers

Stream Ciphers

• aes-128-cfb, aes-128-cfb1, aes-128-cfb8, aes-128-cfb128
• aes-192-cfb, aes-192-cfb1, aes-192-cfb8, aes-192-cfb128
• aes-256-cfb, aes-256-cfb1, aes-256-cfb8, aes-256-cfb128
• aes-128-ctr
• aes-192-ctr
• aes-256-ctr
• camellia-128-cfb, camellia-128-cfb1, camellia-128-cfb8, camellia-128-cfb128
• camellia-192-cfb, camellia-192-cfb1, camellia-192-cfb8, camellia-192-cfb128
• camellia-256-cfb, camellia-256-cfb1, camellia-256-cfb8, camellia-256-cfb128
• rc4, rc4-md5
• chacha20, salsa20, chacha20-ietf
• plain (No encryption, just for debugging)

AEAD Ciphers

• aes-128-gcm, aes-256-gcm
• chacha20-ietf-poly1305, xchacha20-ietf-poly1305
• aes-128-pmac-siv, aes-256-pmac-siv (experimental)

Useful Tools

1. ssurl is for encoding and decoding ShadowSocks URLs (SIP002). Example:

   ss://YWVzLTI1Ni1jZmI6cGFzc3dvcmQ@127.0.0.1:8388/?plugin=obfs-local%3Bobfs%3Dhttp%3Bobfs-host%3Dwww.baidu.com
   

Notes

It supports the following features:

• Socks5 CONNECT command
• UDP ASSOCIATE command (partial)
• Various crypto algorithms
• Load balancing (multiple servers) and server delay checking
• SIP004 AEAD ciphers
• SIP003 Plugins
• SIP002 Extension ss URLs

TODO

• Documentation
• Extend configuration format
• Improved logging format (waiting for the new official log crate)
• Support more ciphers without depending on libcrypto (waiting for an acceptable Rust crypto lib implementation)
• Windows support.
• Build with stable.
• Support HTTP Proxy protocol (it is easy to use another tools to convert HTTP proxy protocol to Socks5, like privoxy)
• One-time Auth. (Already deprecated according to Shadowsocks' community)
• AEAD ciphers. (proposed in SIP004, still under discussion)
• Choose server based on delay #152

License

The MIT License (MIT)

Copyright (c) 2014 Y. T. CHUNG

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.