update CHANGES

fix #280

.gitignore

@@ -18,7 +18,7 @@ pip-log.txt
 
 # Unit test / coverage reports
 htmlcov
-.coverage
+.coverage*
 .tox
 
 #Translations

.jenkins.sh

@@ -24,6 +24,7 @@ function run_test {
     return 0
 }
 
+python --version
 coverage erase
 mkdir tmp
 run_test pep8 .
@@ -38,7 +39,6 @@ run_test python tests/test.py --with-coverage -c tests/aes-cfb8.json
 run_test python tests/test.py --with-coverage -c tests/rc4-md5.json
 run_test python tests/test.py --with-coverage -c tests/salsa20.json
 run_test python tests/test.py --with-coverage -c tests/chacha20.json
-run_test python tests/test.py --with-coverage -c tests/salsa20-ctr.json
 run_test python tests/test.py --with-coverage -c tests/table.json
 run_test python tests/test.py --with-coverage -c tests/server-multi-ports.json
 run_test python tests/test.py --with-coverage -s tests/server-multi-passwd.json -c tests/server-multi-passwd-client-side.json
@@ -46,6 +46,13 @@ run_test python tests/test.py --with-coverage -c tests/workers.json
 run_test python tests/test.py --with-coverage -s tests/ipv6.json -c tests/ipv6-client-side.json
 run_test python tests/test.py --with-coverage -b "-m rc4-md5 -k testrc4 -s 127.0.0.1 -p 8388 -q" -a "-m rc4-md5 -k testrc4 -s 127.0.0.1 -p 8388 -l 1081 -vv"
 run_test python tests/test.py --with-coverage -b "-m aes-256-cfb -k testrc4 -s 127.0.0.1 -p 8388 --workers 1" -a "-m aes-256-cfb -k testrc4 -s 127.0.0.1 -p 8388 -l 1081 -t 30 -qq -b 127.0.0.1"
+run_test python tests/test.py --with-coverage --should-fail --url="http://127.0.0.1/" -b "-m aes-256-cfb -k testrc4 -s 127.0.0.1 -p 8388 --forbidden-ip=127.0.0.1,::1,8.8.8.8" -a "-m aes-256-cfb -k testrc4 -s 127.0.0.1 -p 8388 -l 1081 -t 30 -b 127.0.0.1"
+
+# test localhost is in the forbidden list by default
+run_test python tests/test.py --with-coverage --should-fail --tcp-only --url="http://127.0.0.1/" -b "-m aes-256-cfb -k testrc4 -s 127.0.0.1 -p 8388" -a "-m aes-256-cfb -k testrc4 -s 127.0.0.1 -p 8388 -l 1081 -t 30 -b 127.0.0.1"
+
+# test localhost is available when forbidden list is empty
+run_test python tests/test.py --with-coverage --tcp-only --url="http://127.0.0.1/" -b "-m aes-256-cfb -k testrc4 -s 127.0.0.1 -p 8388 --forbidden-ip=" -a "-m aes-256-cfb -k testrc4 -s 127.0.0.1 -p 8388 -l 1081 -t 30 -b 127.0.0.1"
 
 if [ -f /proc/sys/net/ipv4/tcp_fastopen ] ; then
     if [ 3 -eq `cat /proc/sys/net/ipv4/tcp_fastopen` ] ; then

.travis.yml

@@ -9,10 +9,10 @@ cache:
     - dante-1.4.0
 before_install:
   - sudo apt-get update -qq
-  - sudo apt-get install -qq build-essential libssl-dev swig python-m2crypto python-numpy dnsutils iproute nginx bc
+  - sudo apt-get install -qq build-essential dnsutils iproute nginx bc
   - sudo dd if=/dev/urandom of=/usr/share/nginx/www/file bs=1M count=10
   - sudo service nginx restart
-  - pip install m2crypto salsa20 pep8 pyflakes nose coverage
+  - pip install pep8 pyflakes nose coverage
   - sudo tests/socksify/install.sh
   - sudo tests/libsodium/install.sh
   - sudo tests/setup_tc.sh

CHANGES

@@ -1,3 +1,25 @@
+2.6.7 2015-02-02
+- Support --user
+- Support CIDR format in --forbidden-ip
+- Minor fixes
+
+2.6.6 2015-01-23
+- Fix a crash in forbidden list
+
+2.6.5 2015-01-18
+- Try both 32 bit and 64 bit dll on Windows
+
+2.6.4 2015-01-14
+- Also search lib* when searching libraries
+
+2.6.3 2015-01-12
+- Support --forbidden-ip to ban some IP, i.e. localhost
+- Search OpenSSL and libsodium harder
+- Now works on OpenWRT
+
+2.6.2 2015-01-03
+- Log client IP
+
 2.6.1 2014-12-26
 - Fix a problem with TCP Fast Open on local side
 - Fix sometimes daemon_start returns wrong exit status

CONTRIBUTING.md

@@ -1,38 +1,29 @@
-How to contribute
+How to Contribute
 =================
 
-在你提交问题前，请先[自行诊断]一下。提交时附上诊断过程中的问题和下列结果，
-否则如果我们无法重现你的问题，也就不能帮助你。
+Pull Requests
+-------------
 
-Before you submit issues, please read [Troubleshooting] and take a few minutes
-to read this guide.
-
-问题反馈
--------
-
-请提交下面的信息：
-
-1. 你是如何搭建环境的？（操作系统，Shadowsocks 版本）
-2. 操作步骤是什么？
-3. 浏览器里的现象是什么？一直转菊花，还是有提示错误？
-4. 发生错误时，客户端和服务端最后一部分日志。
-5. 其它你认为可能和问题有关的信息。
-
-如果你不清楚其中某条的含义， 可以直接跳过那一条。
+1. Pull requests are welcome. If you would like to add a large feature
+or make a significant change, make sure to open an issue to discuss with
+people first.
+2. Follow PEP8.
+3. Make sure to pass the unit tests. Write unit tests for new modules if
+needed.
 
 Issues
 ------
 
-Please include the following information in your submission:
+1. Only bugs and feature requests are accepted here.
+2. We'll only work on important features. If the feature you're asking only
+benefits a few people, you'd better implement the feature yourself and send us
+a pull request, or ask some of your friends to do so.
+3. We don't answer questions of any other types here. Since very few people
+are watching the issue tracker here, you'll probably get no help from here.
+Read [Troubleshooting] and get help from forums or [mailing lists].
+4. Issues in languages other than English will be Google translated into English
+later.
 
-1. How did you set up your environment? (OS, version of Shadowsocks)
-2. Steps to reproduce the problem.
-3. What happened in your browser? Just no response, or any error message?
-4. 10 lines of log on the local side of shadowsocks when the error happened.
-5. 10 lines of log on the server side of shadowsocks when the error happened.
-6. Any other useful information.
-
-Skip any of them if you don't know its meaning.
 
 [Troubleshooting]: https://github.com/clowwindy/shadowsocks/wiki/Troubleshooting
-[自行诊断]:        https://github.com/clowwindy/shadowsocks/wiki/Troubleshooting
+[mailing lists]:   https://groups.google.com/forum/#!forum/shadowsocks

LICENSE

@@ -1,6 +1,6 @@
 Shadowsocks
 
-Copyright (c) 2014 clowwindy
+Copyright (c) 2012-2015 clowwindy
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal

MANIFEST.in

@@ -1,3 +1,3 @@
-recursive-include *.py
+recursive-include shadowsocks *.py
 include README.rst
 include LICENSE

README.md

@@ -7,104 +7,58 @@ shadowsocks
 
 A fast tunnel proxy that helps you bypass firewalls.
 
-[中文说明][Chinese Readme]
+Server
+------
 
-Install
--------
+### Install
 
-You'll have a client on your local side, and setup a server on a
-remote server.
+Debian / Ubuntu:
 
-### Client
+    apt-get install python-pip
+    pip install shadowsocks
+
+CentOS:
+
+    yum install python-setuptools && easy_install pip
+    pip install shadowsocks
+
+Windows:
+
+See [Install Server on Windows]
+
+### Usage
+
+    ssserver -p 443 -k password -m rc4-md5
+
+To run in the background:
+
+    sudo ssserver -p 443 -k password -m rc4-md5 --user nobody -d start
+
+To stop:
+
+    sudo ssserver -d stop
+
+To check the log:
+
+    sudo less /var/log/shadowsocks.log
+
+Check all the options via `-h`. You can also use a [Configuration] file
+instead.
+
+Client
+------
 
 * [Windows] / [OS X]
 * [Android] / [iOS]
 * [OpenWRT]
 
-### Server
-
-#### Debian / Ubuntu:
-
-    apt-get install python-pip
-    pip install shadowsocks
-
-Or simply `apt-get install shadowsocks` if you have [Debian sid] in your
-source list.
-
-#### CentOS:
-
-    yum install python-setuptools
-    easy_install pip
-    pip install shadowsocks
-
-#### Windows:
-
-Download [OpenSSL for Windows] and install. Then install shadowsocks via
-easy_install and pip as Linux. If you don't know how to use them, you can
-directly download [the package], and use `python shadowsocks/server.py`
-instead of `ssserver` command below.
-
-Configuration
--------------
-
-On your server create a config file `/etc/shadowsocks.json`.
-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",
-        "fast_open": false
-    }
-
-Explanation of the fields:
-
-| Name          | Explanation                                     |
-| ------------- | ----------------------------------------------- |
-| server        | the address your server listens                 |
-| server_port   | server port                                     |
-| local_address | the address your local listens                  |
-| local_port    | local port                                      |
-| password      | password used for encryption                    |
-| timeout       | in seconds                                      |
-| method        | default: "aes-256-cfb", see [Encryption]        |
-| fast_open     | use [TCP_FASTOPEN], true / false                |
-| workers       | number of workers, available on Unix/Linux      |
-
-On your server:
-
-To run in the foreground:
-
-    ssserver -c /etc/shadowsocks.json
-
-To run in the background:
-
-    ssserver -c /etc/shadowsocks.json -d start
-    ssserver -c /etc/shadowsocks.json -d stop
-
-On your client machine, use the same configuration as your server. Check the
-README of your client for more information.
-
-Command Line Options
---------------------
-
-Check the options via `-h`.You can use args to override settings from
-`config.json`.
-
-    sslocal -s server_name -p server_port -l local_port -k password -m bf-cfb
-    ssserver -p server_port -k password -m bf-cfb --workers 2
-    ssserver -c /etc/shadowsocks/config.json -d start --pid-file=/tmp/shadowsocks.pid
-    ssserver -c /etc/shadowsocks/config.json -d stop --pid-file=/tmp/shadowsocks.pid
+Use GUI clients on your local PC/phones. Check the README of your client
+for more information.
 
 Documentation
 -------------
 
-You can find all the documentation in the wiki:
-https://github.com/shadowsocks/shadowsocks/wiki
+You can find all the documentation in the [Wiki].
 
 License
 -------
@@ -118,23 +72,22 @@ Bugs and Issues
 * [Mailing list]
 
 
+
 [Android]:           https://github.com/shadowsocks/shadowsocks/wiki/Ports-and-Clients#android
 [Build Status]:      https://img.shields.io/travis/shadowsocks/shadowsocks/master.svg?style=flat
-[Chinese Readme]:    https://github.com/shadowsocks/shadowsocks/wiki/Shadowsocks-%E4%BD%BF%E7%94%A8%E8%AF%B4%E6%98%8E
-[Coverage Status]:   http://192.81.132.184/result/shadowsocks
-[Coverage]:          http://192.81.132.184/job/Shadowsocks/ws/htmlcov/index.html
+[Configuration]:     https://github.com/shadowsocks/shadowsocks/wiki/Configuration-via-Config-File
+[Coverage Status]:   https://jenkins.shadowvpn.org/result/shadowsocks
+[Coverage]:          https://jenkins.shadowvpn.org/job/Shadowsocks/ws/PYENV/py34/label/linux/htmlcov/index.html
 [Debian sid]:        https://packages.debian.org/unstable/python/shadowsocks
-[the package]:       https://pypi.python.org/pypi/shadowsocks
-[Encryption]:        https://github.com/shadowsocks/shadowsocks/wiki/Encryption
 [iOS]:               https://github.com/shadowsocks/shadowsocks-iOS/wiki/Help
 [Issue Tracker]:     https://github.com/shadowsocks/shadowsocks/issues?state=open
-[Mailing list]:      http://groups.google.com/group/shadowsocks
-[OpenSSL for Windows]: http://slproweb.com/products/Win32OpenSSL.html
-[OpenWRT]:           https://github.com/shadowsocks/shadowsocks/wiki/Ports-and-Clients#openwrt
+[Install Server on Windows]: https://github.com/shadowsocks/shadowsocks/wiki/Install-Shadowsocks-Server-on-Windows
+[Mailing list]:      https://groups.google.com/group/shadowsocks
+[OpenWRT]:           https://github.com/shadowsocks/openwrt-shadowsocks
 [OS X]:              https://github.com/shadowsocks/shadowsocks-iOS/wiki/Shadowsocks-for-OSX-Help
 [PyPI]:              https://pypi.python.org/pypi/shadowsocks
 [PyPI version]:      https://img.shields.io/pypi/v/shadowsocks.svg?style=flat
-[TCP_FASTOPEN]:      https://github.com/shadowsocks/shadowsocks/wiki/TCP-Fast-Open
 [Travis CI]:         https://travis-ci.org/shadowsocks/shadowsocks
 [Troubleshooting]:   https://github.com/shadowsocks/shadowsocks/wiki/Troubleshooting
+[Wiki]:              https://github.com/shadowsocks/shadowsocks/wiki
 [Windows]:           https://github.com/shadowsocks/shadowsocks/wiki/Ports-and-Clients#windows

README.rst

@@ -5,136 +5,78 @@ shadowsocks
 
 A fast tunnel proxy that helps you bypass firewalls.
 
-`中文说明 <https://github.com/shadowsocks/shadowsocks/wiki/Shadowsocks-%E4%BD%BF%E7%94%A8%E8%AF%B4%E6%98%8E>`__
+Server
+------
 
 Install
--------
-
-You'll have a client on your local side, and setup a server on a remote
-server.
-
-Client
-~~~~~~
-
--  `Windows <https://github.com/shadowsocks/shadowsocks/wiki/Ports-and-Clients#windows>`__
-   / `OS
-   X <https://github.com/shadowsocks/shadowsocks-iOS/wiki/Shadowsocks-for-OSX-Help>`__
--  `Android <https://github.com/shadowsocks/shadowsocks/wiki/Ports-and-Clients#android>`__
-   / `iOS <https://github.com/shadowsocks/shadowsocks-iOS/wiki/Help>`__
--  `OpenWRT <https://github.com/shadowsocks/shadowsocks/wiki/Ports-and-Clients#openwrt>`__
-
-Server
-~~~~~~
+~~~~~~~
 
 Debian / Ubuntu:
-^^^^^^^^^^^^^^^^
 
 ::
 
     apt-get install python-pip
     pip install shadowsocks
 
-Or simply ``apt-get install shadowsocks`` if you have `Debian
-sid <https://packages.debian.org/unstable/python/shadowsocks>`__ in your
-source list.
-
 CentOS:
-^^^^^^^
 
 ::
 
-    yum install python-setuptools
-    easy_install pip
+    yum install python-setuptools && easy_install pip
     pip install shadowsocks
 
 Windows:
-^^^^^^^^
 
-Download `OpenSSL for
-Windows <http://slproweb.com/products/Win32OpenSSL.html>`__ and install.
-Then install shadowsocks via easy\_install and pip as Linux. If you
-don't know how to use them, you can directly download `the
-package <https://pypi.python.org/pypi/shadowsocks>`__, and use
-``python shadowsocks/server.py`` instead of ``ssserver`` command below.
+See `Install Server on
+Windows <https://github.com/shadowsocks/shadowsocks/wiki/Install-Shadowsocks-Server-on-Windows>`__
 
-Configuration
--------------
-
-On your server create a config file ``/etc/shadowsocks.json``. Example:
+Usage
+~~~~~
 
 ::
 
-    {
-        "server":"my_server_ip",
-        "server_port":8388,
-        "local_address": "127.0.0.1",
-        "local_port":1080,
-        "password":"mypassword",
-        "timeout":300,
-        "method":"aes-256-cfb",
-        "fast_open": false
-    }
-
-Explanation of the fields:
-
-+------------------+-----------------------------------------------------------------------------------------------------------+
-| Name             | Explanation                                                                                               |
-+==================+===========================================================================================================+
-| server           | the address your server listens                                                                           |
-+------------------+-----------------------------------------------------------------------------------------------------------+
-| server\_port     | server port                                                                                               |
-+------------------+-----------------------------------------------------------------------------------------------------------+
-| local\_address   | the address your local listens                                                                            |
-+------------------+-----------------------------------------------------------------------------------------------------------+
-| local\_port      | local port                                                                                                |
-+------------------+-----------------------------------------------------------------------------------------------------------+
-| password         | password used for encryption                                                                              |
-+------------------+-----------------------------------------------------------------------------------------------------------+
-| timeout          | in seconds                                                                                                |
-+------------------+-----------------------------------------------------------------------------------------------------------+
-| method           | default: "aes-256-cfb", see `Encryption <https://github.com/shadowsocks/shadowsocks/wiki/Encryption>`__   |
-+------------------+-----------------------------------------------------------------------------------------------------------+
-| fast\_open       | use `TCP\_FASTOPEN <https://github.com/shadowsocks/shadowsocks/wiki/TCP-Fast-Open>`__, true / false       |
-+------------------+-----------------------------------------------------------------------------------------------------------+
-| workers          | number of workers, available on Unix/Linux                                                                |
-+------------------+-----------------------------------------------------------------------------------------------------------+
-
-On your server:
-
-To run in the foreground:
-
-::
-
-    ssserver -c /etc/shadowsocks.json
+    ssserver -p 443 -k password -m rc4-md5
 
 To run in the background:
 
 ::
 
-    ssserver -c /etc/shadowsocks.json -d start
-    ssserver -c /etc/shadowsocks.json -d stop
+    sudo ssserver -p 443 -k password -m rc4-md5 --user nobody -d start
 
-On your client machine, use the same configuration as your server. Check
-the README of your client for more information.
-
-Command Line Options
---------------------
-
-Check the options via ``-h``.You can use args to override settings from
-``config.json``.
+To stop:
 
 ::
 
-    sslocal -s server_name -p server_port -l local_port -k password -m bf-cfb
-    ssserver -p server_port -k password -m bf-cfb --workers 2
-    ssserver -c /etc/shadowsocks/config.json -d start --pid-file=/tmp/shadowsocks.pid
-    ssserver -c /etc/shadowsocks/config.json -d stop --pid-file=/tmp/shadowsocks.pid
+    sudo ssserver -d stop
+
+To check the log:
+
+::
+
+    sudo less /var/log/shadowsocks.log
+
+Check all the options via ``-h``. You can also use a
+`Configuration <https://github.com/shadowsocks/shadowsocks/wiki/Configuration-via-Config-File>`__
+file instead.
+
+Client
+------
+
+-  `Windows <https://github.com/shadowsocks/shadowsocks/wiki/Ports-and-Clients#windows>`__
+   / `OS
+   X <https://github.com/shadowsocks/shadowsocks-iOS/wiki/Shadowsocks-for-OSX-Help>`__
+-  `Android <https://github.com/shadowsocks/shadowsocks/wiki/Ports-and-Clients#android>`__
+   / `iOS <https://github.com/shadowsocks/shadowsocks-iOS/wiki/Help>`__
+-  `OpenWRT <https://github.com/shadowsocks/openwrt-shadowsocks>`__
+
+Use GUI clients on your local PC/phones. Check the README of your client
+for more information.
 
 Documentation
 -------------
 
-You can find all the documentation in the wiki:
-https://github.com/shadowsocks/shadowsocks/wiki
+You can find all the documentation in the
+`Wiki <https://github.com/shadowsocks/shadowsocks/wiki>`__.
 
 License
 -------
@@ -147,11 +89,11 @@ Bugs and Issues
 -  `Troubleshooting <https://github.com/shadowsocks/shadowsocks/wiki/Troubleshooting>`__
 -  `Issue
    Tracker <https://github.com/shadowsocks/shadowsocks/issues?state=open>`__
--  `Mailing list <http://groups.google.com/group/shadowsocks>`__
+-  `Mailing list <https://groups.google.com/group/shadowsocks>`__
 
 .. |PyPI version| image:: https://img.shields.io/pypi/v/shadowsocks.svg?style=flat
    :target: https://pypi.python.org/pypi/shadowsocks
 .. |Build Status| image:: https://img.shields.io/travis/shadowsocks/shadowsocks/master.svg?style=flat
    :target: https://travis-ci.org/shadowsocks/shadowsocks
-.. |Coverage Status| image:: http://192.81.132.184/result/shadowsocks
-   :target: http://192.81.132.184/job/Shadowsocks/ws/htmlcov/index.html
+.. |Coverage Status| image:: https://jenkins.shadowvpn.org/result/shadowsocks
+   :target: https://jenkins.shadowvpn.org/job/Shadowsocks/ws/PYENV/py34/label/linux/htmlcov/index.html

setup.py

@@ -7,7 +7,7 @@ with codecs.open('README.rst', encoding='utf-8') as f:
 
 setup(
     name="shadowsocks",
-    version="2.6.1",
+    version="2.6.7",
     license='MIT',
     description="A fast tunnel proxy that help you get through firewalls",
     author='clowwindy',

shadowsocks/asyncdns.py

@@ -93,11 +93,12 @@ def build_address(address):
     return b''.join(results)
 
 
-def build_request(address, qtype, request_id):
-    header = struct.pack('!HBBHHHH', request_id, 1, 0, 1, 0, 0, 0)
+def build_request(address, qtype):
+    request_id = os.urandom(2)
+    header = struct.pack('!BBHHHH', 1, 0, 1, 0, 0, 0)
     addr = build_address(address)
     qtype_qclass = struct.pack('!HH', qtype, QCLASS_IN)
-    return header + addr + qtype_qclass
+    return request_id + header + addr + qtype_qclass
 
 
 def parse_ip(addrtype, data, length, offset):
@@ -232,18 +233,6 @@ def parse_response(data):
         return None
 
 
-def is_ip(address):
-    for family in (socket.AF_INET, socket.AF_INET6):
-        try:
-            if type(address) != str:
-                address = address.decode('utf8')
-            socket.inet_pton(family, address)
-            return family
-        except (TypeError, ValueError, OSError, IOError):
-            pass
-    return False
-
-
 def is_valid_hostname(hostname):
     if len(hostname) > 255:
         return False
@@ -270,7 +259,6 @@ class DNSResolver(object):
 
     def __init__(self):
         self._loop = None
-        self._request_id = 1
         self._hosts = {}
         self._hostname_status = {}
         self._hostname_to_cb = {}
@@ -296,7 +284,7 @@ class DNSResolver(object):
                             parts = line.split()
                             if len(parts) >= 2:
                                 server = parts[1]
-                                if is_ip(server) == socket.AF_INET:
+                                if common.is_ip(server) == socket.AF_INET:
                                     if type(server) != str:
                                         server = server.decode('utf8')
                                     self._servers.append(server)
@@ -316,7 +304,7 @@ class DNSResolver(object):
                     parts = line.split()
                     if len(parts) >= 2:
                         ip = parts[0]
-                        if is_ip(ip):
+                        if common.is_ip(ip):
                             for i in range(1, len(parts)):
                                 hostname = parts[i]
                                 if hostname:
@@ -412,10 +400,7 @@ class DNSResolver(object):
                         del self._hostname_status[hostname]
 
     def _send_req(self, hostname, qtype):
-        self._request_id += 1
-        if self._request_id > 32768:
-            self._request_id = 1
-        req = build_request(hostname, qtype, self._request_id)
+        req = build_request(hostname, qtype)
         for server in self._servers:
             logging.debug('resolving %s with type %d using server %s',
                           hostname, qtype, server)
@@ -426,7 +411,7 @@ class DNSResolver(object):
             hostname = hostname.encode('utf8')
         if not hostname:
             callback(None, Exception('empty hostname'))
-        elif is_ip(hostname):
+        elif common.is_ip(hostname):
             callback((hostname, hostname), None)
         elif hostname in self._hosts:
             logging.debug('hit hosts: %s', hostname)

shadowsocks/common.py

@@ -101,6 +101,18 @@ def inet_pton(family, addr):
         raise RuntimeError("What family?")
 
 
+def is_ip(address):
+    for family in (socket.AF_INET, socket.AF_INET6):
+        try:
+            if type(address) != str:
+                address = address.decode('utf8')
+            inet_pton(family, address)
+            return family
+        except (TypeError, ValueError, OSError, IOError):
+            pass
+    return False
+
+
 def patch_socket():
     if not hasattr(socket, 'inet_pton'):
         socket.inet_pton = inet_pton
@@ -172,6 +184,61 @@ def parse_header(data):
     return addrtype, to_bytes(dest_addr), dest_port, header_length
 
 
+class IPNetwork(object):
+    ADDRLENGTH = {socket.AF_INET: 32, socket.AF_INET6: 128, False: 0}
+
+    def __init__(self, addrs):
+        self._network_list_v4 = []
+        self._network_list_v6 = []
+        if type(addrs) == str:
+            addrs = addrs.split(',')
+        list(map(self.add_network, addrs))
+
+    def add_network(self, addr):
+        if addr is "":
+            return
+        block = addr.split('/')
+        addr_family = is_ip(block[0])
+        addr_len = IPNetwork.ADDRLENGTH[addr_family]
+        if addr_family is socket.AF_INET:
+            ip, = struct.unpack("!I", socket.inet_aton(block[0]))
+        elif addr_family is socket.AF_INET6:
+            hi, lo = struct.unpack("!QQ", inet_pton(addr_family, block[0]))
+            ip = (hi << 64) | lo
+        else:
+            raise Exception("Not a valid CIDR notation: %s" % addr)
+        if len(block) is 1:
+            prefix_size = 0
+            while (ip & 1) == 0 and ip is not 0:
+                ip >>= 1
+                prefix_size += 1
+            logging.warn("You did't specify CIDR routing prefix size for %s, "
+                         "implicit treated as %s/%d" % (addr, addr, addr_len))
+        elif block[1].isdigit() and int(block[1]) <= addr_len:
+            prefix_size = addr_len - int(block[1])
+            ip >>= prefix_size
+        else:
+            raise Exception("Not a valid CIDR notation: %s" % addr)
+        if addr_family is socket.AF_INET:
+            self._network_list_v4.append((ip, prefix_size))
+        else:
+            self._network_list_v6.append((ip, prefix_size))
+
+    def __contains__(self, addr):
+        addr_family = is_ip(addr)
+        if addr_family is socket.AF_INET:
+            ip, = struct.unpack("!I", socket.inet_aton(addr))
+            return any(map(lambda n_ps: n_ps[0] == ip >> n_ps[1],
+                           self._network_list_v4))
+        elif addr_family is socket.AF_INET6:
+            hi, lo = struct.unpack("!QQ", inet_pton(addr_family, addr))
+            ip = (hi << 64) | lo
+            return any(map(lambda n_ps: n_ps[0] == ip >> n_ps[1],
+                           self._network_list_v6))
+        else:
+            return False
+
+
 def test_inet_conv():
     ipv4 = b'8.8.4.4'
     b = inet_pton(socket.AF_INET, ipv4)
@@ -198,7 +265,23 @@ def test_pack_header():
     assert pack_addr(b'www.google.com') == b'\x03\x0ewww.google.com'
 
 
+def test_ip_network():
+    ip_network = IPNetwork('127.0.0.0/24,::ff:1/112,::1,192.168.1.1,192.0.2.0')
+    assert '127.0.0.1' in ip_network
+    assert '127.0.1.1' not in ip_network
+    assert ':ff:ffff' in ip_network
+    assert '::ffff:1' not in ip_network
+    assert '::1' in ip_network
+    assert '::2' not in ip_network
+    assert '192.168.1.1' in ip_network
+    assert '192.168.1.2' not in ip_network
+    assert '192.0.2.1' in ip_network
+    assert '192.0.3.1' in ip_network  # 192.0.2.0 is treated as 192.0.2.0/23
+    assert 'www.google.com' not in ip_network
+
+
 if __name__ == '__main__':
     test_inet_conv()
     test_parse_header()
     test_pack_header()
+    test_ip_network()

shadowsocks/crypto/m2.py

@@ -1,119 +0,0 @@
-#!/usr/bin/env python
-
-# Copyright (c) 2014 clowwindy
-#
-# 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.
-
-from __future__ import absolute_import, division, print_function, \
-    with_statement
-
-import sys
-import logging
-
-__all__ = ['ciphers']
-
-has_m2 = True
-try:
-    __import__('M2Crypto')
-except ImportError:
-    has_m2 = False
-if bytes != str:
-    has_m2 = False
-
-
-def create_cipher(alg, key, iv, op, key_as_bytes=0, d=None, salt=None, i=1,
-                  padding=1):
-
-    import M2Crypto.EVP
-    return M2Crypto.EVP.Cipher(alg.replace('-', '_'), key, iv, op,
-                               key_as_bytes=0, d='md5', salt=None, i=1,
-                               padding=1)
-
-
-def err(alg, key, iv, op, key_as_bytes=0, d=None, salt=None, i=1, padding=1):
-    logging.error(('M2Crypto is required to use %s, please run'
-                   ' `apt-get install python-m2crypto`') % alg)
-    sys.exit(1)
-
-
-if has_m2:
-    ciphers = {
-        b'aes-128-cfb': (16, 16, create_cipher),
-        b'aes-192-cfb': (24, 16, create_cipher),
-        b'aes-256-cfb': (32, 16, create_cipher),
-        b'bf-cfb': (16, 8, create_cipher),
-        b'camellia-128-cfb': (16, 16, create_cipher),
-        b'camellia-192-cfb': (24, 16, create_cipher),
-        b'camellia-256-cfb': (32, 16, create_cipher),
-        b'cast5-cfb': (16, 8, create_cipher),
-        b'des-cfb': (8, 8, create_cipher),
-        b'idea-cfb': (16, 8, create_cipher),
-        b'rc2-cfb': (16, 8, create_cipher),
-        b'rc4': (16, 0, create_cipher),
-        b'seed-cfb': (16, 16, create_cipher),
-    }
-else:
-    ciphers = {}
-
-
-def run_method(method):
-    from shadowsocks.crypto import util
-
-    cipher = create_cipher(method, b'k' * 32, b'i' * 16, 1)
-    decipher = create_cipher(method, b'k' * 32, b'i' * 16, 0)
-
-    util.run_cipher(cipher, decipher)
-
-
-def check_env():
-    # skip this test on pypy and Python 3
-    try:
-        import __pypy__
-        del __pypy__
-        from nose.plugins.skip import SkipTest
-        raise SkipTest
-    except ImportError:
-        pass
-    if bytes != str:
-        from nose.plugins.skip import SkipTest
-        raise SkipTest
-
-
-def test_aes_128_cfb():
-    check_env()
-    run_method(b'aes-128-cfb')
-
-
-def test_aes_256_cfb():
-    check_env()
-    run_method(b'aes-256-cfb')
-
-
-def test_bf_cfb():
-    check_env()
-    run_method(b'bf-cfb')
-
-
-def test_rc4():
-    check_env()
-    run_method(b'rc4')
-
-
-if __name__ == '__main__':
-    test_aes_128_cfb()

shadowsocks/crypto/openssl.py

@@ -23,10 +23,11 @@
 from __future__ import absolute_import, division, print_function, \
     with_statement
 
-import logging
-from ctypes import CDLL, c_char_p, c_int, c_long, byref,\
+from ctypes import c_char_p, c_int, c_long, byref,\
     create_string_buffer, c_void_p
 
+from shadowsocks.crypto import util
+
 __all__ = ['ciphers']
 
 libcrypto = None
@@ -38,15 +39,12 @@ buf_size = 2048
 def load_openssl():
     global loaded, libcrypto, buf
 
-    from ctypes.util import find_library
-    for p in ('crypto', 'eay32', 'libeay32'):
-        libcrypto_path = find_library(p)
-        if libcrypto_path:
-            break
-    else:
+    libcrypto = util.find_library(('crypto', 'eay32'),
+                                  'EVP_get_cipherbyname',
+                                  'libcrypto')
+    if libcrypto is None:
         raise Exception('libcrypto(OpenSSL) not found')
-    logging.info('loading libcrypto from %s', libcrypto_path)
-    libcrypto = CDLL(libcrypto_path)
+
     libcrypto.EVP_get_cipherbyname.restype = c_void_p
     libcrypto.EVP_CIPHER_CTX_new.restype = c_void_p
 
@@ -76,11 +74,11 @@ def load_cipher(cipher_name):
     return None
 
 
-class CtypesCrypto(object):
+class OpenSSLCrypto(object):
     def __init__(self, cipher_name, key, iv, op):
+        self._ctx = None
         if not loaded:
             load_openssl()
-        self._ctx = None
         cipher = libcrypto.EVP_get_cipherbyname(cipher_name)
         if not cipher:
             cipher = load_cipher(cipher_name)
@@ -119,39 +117,38 @@ class CtypesCrypto(object):
 
 
 ciphers = {
-    b'aes-128-cfb': (16, 16, CtypesCrypto),
-    b'aes-192-cfb': (24, 16, CtypesCrypto),
-    b'aes-256-cfb': (32, 16, CtypesCrypto),
-    b'aes-128-ofb': (16, 16, CtypesCrypto),
-    b'aes-192-ofb': (24, 16, CtypesCrypto),
-    b'aes-256-ofb': (32, 16, CtypesCrypto),
-    b'aes-128-ctr': (16, 16, CtypesCrypto),
-    b'aes-192-ctr': (24, 16, CtypesCrypto),
-    b'aes-256-ctr': (32, 16, CtypesCrypto),
-    b'aes-128-cfb8': (16, 16, CtypesCrypto),
-    b'aes-192-cfb8': (24, 16, CtypesCrypto),
-    b'aes-256-cfb8': (32, 16, CtypesCrypto),
-    b'aes-128-cfb1': (16, 16, CtypesCrypto),
-    b'aes-192-cfb1': (24, 16, CtypesCrypto),
-    b'aes-256-cfb1': (32, 16, CtypesCrypto),
-    b'bf-cfb': (16, 8, CtypesCrypto),
-    b'camellia-128-cfb': (16, 16, CtypesCrypto),
-    b'camellia-192-cfb': (24, 16, CtypesCrypto),
-    b'camellia-256-cfb': (32, 16, CtypesCrypto),
-    b'cast5-cfb': (16, 8, CtypesCrypto),
-    b'des-cfb': (8, 8, CtypesCrypto),
-    b'idea-cfb': (16, 8, CtypesCrypto),
-    b'rc2-cfb': (16, 8, CtypesCrypto),
-    b'rc4': (16, 0, CtypesCrypto),
-    b'seed-cfb': (16, 16, CtypesCrypto),
+    b'aes-128-cfb': (16, 16, OpenSSLCrypto),
+    b'aes-192-cfb': (24, 16, OpenSSLCrypto),
+    b'aes-256-cfb': (32, 16, OpenSSLCrypto),
+    b'aes-128-ofb': (16, 16, OpenSSLCrypto),
+    b'aes-192-ofb': (24, 16, OpenSSLCrypto),
+    b'aes-256-ofb': (32, 16, OpenSSLCrypto),
+    b'aes-128-ctr': (16, 16, OpenSSLCrypto),
+    b'aes-192-ctr': (24, 16, OpenSSLCrypto),
+    b'aes-256-ctr': (32, 16, OpenSSLCrypto),
+    b'aes-128-cfb8': (16, 16, OpenSSLCrypto),
+    b'aes-192-cfb8': (24, 16, OpenSSLCrypto),
+    b'aes-256-cfb8': (32, 16, OpenSSLCrypto),
+    b'aes-128-cfb1': (16, 16, OpenSSLCrypto),
+    b'aes-192-cfb1': (24, 16, OpenSSLCrypto),
+    b'aes-256-cfb1': (32, 16, OpenSSLCrypto),
+    b'bf-cfb': (16, 8, OpenSSLCrypto),
+    b'camellia-128-cfb': (16, 16, OpenSSLCrypto),
+    b'camellia-192-cfb': (24, 16, OpenSSLCrypto),
+    b'camellia-256-cfb': (32, 16, OpenSSLCrypto),
+    b'cast5-cfb': (16, 8, OpenSSLCrypto),
+    b'des-cfb': (8, 8, OpenSSLCrypto),
+    b'idea-cfb': (16, 8, OpenSSLCrypto),
+    b'rc2-cfb': (16, 8, OpenSSLCrypto),
+    b'rc4': (16, 0, OpenSSLCrypto),
+    b'seed-cfb': (16, 16, OpenSSLCrypto),
 }
 
 
 def run_method(method):
-    from shadowsocks.crypto import util
 
-    cipher = CtypesCrypto(method, b'k' * 32, b'i' * 16, 1)
-    decipher = CtypesCrypto(method, b'k' * 32, b'i' * 16, 0)
+    cipher = OpenSSLCrypto(method, b'k' * 32, b'i' * 16, 1)
+    decipher = OpenSSLCrypto(method, b'k' * 32, b'i' * 16, 0)
 
     util.run_cipher(cipher, decipher)
 

shadowsocks/crypto/rc4_md5.py

@@ -25,6 +25,7 @@ from __future__ import absolute_import, division, print_function, \
 
 import hashlib
 
+from shadowsocks.crypto import openssl
 
 __all__ = ['ciphers']
 
@@ -35,15 +36,7 @@ def create_cipher(alg, key, iv, op, key_as_bytes=0, d=None, salt=None,
     md5.update(key)
     md5.update(iv)
     rc4_key = md5.digest()
-
-    try:
-        from shadowsocks.crypto import ctypes_openssl
-        return ctypes_openssl.CtypesCrypto(b'rc4', rc4_key, b'', op)
-    except:
-        import M2Crypto.EVP
-        return M2Crypto.EVP.Cipher(b'rc4', rc4_key, b'', op,
-                                   key_as_bytes=0, d='md5', salt=None, i=1,
-                                   padding=1)
+    return openssl.OpenSSLCrypto(b'rc4', rc4_key, b'', op)
 
 
 ciphers = {

shadowsocks/crypto/salsa20_ctr.py

@@ -1,140 +0,0 @@
-#!/usr/bin/env python
-
-# Copyright (c) 2014 clowwindy
-#
-# 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.
-
-from __future__ import absolute_import, division, print_function, \
-    with_statement
-
-import struct
-import logging
-import sys
-
-slow_xor = False
-imported = False
-
-salsa20 = None
-numpy = None
-
-BLOCK_SIZE = 16384
-
-
-def run_imports():
-    global imported, slow_xor, salsa20, numpy
-    if not imported:
-        imported = True
-        try:
-            numpy = __import__('numpy')
-        except ImportError:
-            logging.error('can not import numpy, using SLOW XOR')
-            logging.error('please install numpy if you use salsa20')
-            slow_xor = True
-        try:
-            salsa20 = __import__('salsa20')
-        except ImportError:
-            logging.error('you have to install salsa20 before you use salsa20')
-            sys.exit(1)
-
-
-def numpy_xor(a, b):
-    if slow_xor:
-        return py_xor_str(a, b)
-    dtype = numpy.byte
-    if len(a) % 4 == 0:
-        dtype = numpy.uint32
-    elif len(a) % 2 == 0:
-        dtype = numpy.uint16
-
-    ab = numpy.frombuffer(a, dtype=dtype)
-    bb = numpy.frombuffer(b, dtype=dtype)
-    c = numpy.bitwise_xor(ab, bb)
-    r = c.tostring()
-    return r
-
-
-def py_xor_str(a, b):
-    c = []
-    if bytes == str:
-        for i in range(0, len(a)):
-            c.append(chr(ord(a[i]) ^ ord(b[i])))
-        return ''.join(c)
-    else:
-        for i in range(0, len(a)):
-            c.append(a[i] ^ b[i])
-        return bytes(c)
-
-
-class Salsa20Cipher(object):
-    """a salsa20 CTR implemetation, provides m2crypto like cipher API"""
-
-    def __init__(self, alg, key, iv, op, key_as_bytes=0, d=None, salt=None,
-                 i=1, padding=1):
-        run_imports()
-        if alg != b'salsa20-ctr':
-            raise Exception('unknown algorithm')
-        self._key = key
-        self._nonce = struct.unpack('<Q', iv)[0]
-        self._pos = 0
-        self._next_stream()
-
-    def _next_stream(self):
-        self._nonce &= 0xFFFFFFFFFFFFFFFF
-        self._stream = salsa20.Salsa20_keystream(BLOCK_SIZE,
-                                                 struct.pack('<Q',
-                                                             self._nonce),
-                                                 self._key)
-        self._nonce += 1
-
-    def update(self, data):
-        results = []
-        while True:
-            remain = BLOCK_SIZE - self._pos
-            cur_data = data[:remain]
-            cur_data_len = len(cur_data)
-            cur_stream = self._stream[self._pos:self._pos + cur_data_len]
-            self._pos = self._pos + cur_data_len
-            data = data[remain:]
-
-            results.append(numpy_xor(cur_data, cur_stream))
-
-            if self._pos >= BLOCK_SIZE:
-                self._next_stream()
-                self._pos = 0
-            if not data:
-                break
-        return b''.join(results)
-
-
-ciphers = {
-    b'salsa20-ctr': (32, 8, Salsa20Cipher),
-}
-
-
-def test():
-    from shadowsocks.crypto import util
-
-    cipher = Salsa20Cipher(b'salsa20-ctr', b'k' * 32, b'i' * 8, 1)
-    decipher = Salsa20Cipher(b'salsa20-ctr', b'k' * 32, b'i' * 8, 1)
-
-    util.run_cipher(cipher, decipher)
-
-
-if __name__ == '__main__':
-    test()

shadowsocks/crypto/sodium.py

@@ -23,10 +23,11 @@
 from __future__ import absolute_import, division, print_function, \
     with_statement
 
-import logging
-from ctypes import CDLL, c_char_p, c_int, c_ulonglong, byref, \
+from ctypes import c_char_p, c_int, c_ulonglong, byref, \
     create_string_buffer, c_void_p
 
+from shadowsocks.crypto import util
+
 __all__ = ['ciphers']
 
 libsodium = None
@@ -41,16 +42,11 @@ BLOCK_SIZE = 64
 def load_libsodium():
     global loaded, libsodium, buf
 
-    from ctypes.util import find_library
-    for p in ('sodium', 'libsodium'):
-        libsodium_path = find_library(p)
-        if libsodium_path:
-            break
-    else:
+    libsodium = util.find_library('sodium', 'crypto_stream_salsa20_xor_ic',
+                                  'libsodium')
+    if libsodium is None:
         raise Exception('libsodium not found')
-    logging.info('loading libsodium from %s', libsodium_path)
-    libsodium = CDLL(libsodium_path)
-    libsodium.sodium_init.restype = c_int
+
     libsodium.crypto_stream_salsa20_xor_ic.restype = c_int
     libsodium.crypto_stream_salsa20_xor_ic.argtypes = (c_void_p, c_char_p,
                                                        c_ulonglong,
@@ -62,13 +58,11 @@ def load_libsodium():
                                                         c_char_p, c_ulonglong,
                                                         c_char_p)
 
-    libsodium.sodium_init()
-
     buf = create_string_buffer(buf_size)
     loaded = True
 
 
-class Salsa20Crypto(object):
+class SodiumCrypto(object):
     def __init__(self, cipher_name, key, iv, op):
         if not loaded:
             load_libsodium()
@@ -107,25 +101,22 @@ class Salsa20Crypto(object):
 
 
 ciphers = {
-    b'salsa20': (32, 8, Salsa20Crypto),
-    b'chacha20': (32, 8, Salsa20Crypto),
+    b'salsa20': (32, 8, SodiumCrypto),
+    b'chacha20': (32, 8, SodiumCrypto),
 }
 
 
 def test_salsa20():
-    from shadowsocks.crypto import util
-
-    cipher = Salsa20Crypto(b'salsa20', b'k' * 32, b'i' * 16, 1)
-    decipher = Salsa20Crypto(b'salsa20', b'k' * 32, b'i' * 16, 0)
+    cipher = SodiumCrypto(b'salsa20', b'k' * 32, b'i' * 16, 1)
+    decipher = SodiumCrypto(b'salsa20', b'k' * 32, b'i' * 16, 0)
 
     util.run_cipher(cipher, decipher)
 
 
 def test_chacha20():
-    from shadowsocks.crypto import util
 
-    cipher = Salsa20Crypto(b'chacha20', b'k' * 32, b'i' * 16, 1)
-    decipher = Salsa20Crypto(b'chacha20', b'k' * 32, b'i' * 16, 0)
+    cipher = SodiumCrypto(b'chacha20', b'k' * 32, b'i' * 16, 1)
+    decipher = SodiumCrypto(b'chacha20', b'k' * 32, b'i' * 16, 0)
 
     util.run_cipher(cipher, decipher)
 

shadowsocks/crypto/util.py

@@ -20,6 +20,83 @@
 # OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 # SOFTWARE.
 
+from __future__ import absolute_import, division, print_function, \
+    with_statement
+
+import os
+import logging
+
+
+def find_library_nt(name):
+    # modified from ctypes.util
+    # ctypes.util.find_library just returns first result he found
+    # but we want to try them all
+    # because on Windows, users may have both 32bit and 64bit version installed
+    results = []
+    for directory in os.environ['PATH'].split(os.pathsep):
+        fname = os.path.join(directory, name)
+        if os.path.isfile(fname):
+            results.append(fname)
+        if fname.lower().endswith(".dll"):
+            continue
+        fname = fname + ".dll"
+        if os.path.isfile(fname):
+            results.append(fname)
+    return results
+
+
+def find_library(possible_lib_names, search_symbol, library_name):
+    import ctypes.util
+    from ctypes import CDLL
+
+    paths = []
+
+    if type(possible_lib_names) not in (list, tuple):
+        possible_lib_names = [possible_lib_names]
+
+    lib_names = []
+    for lib_name in possible_lib_names:
+        lib_names.append(lib_name)
+        lib_names.append('lib' + lib_name)
+
+    for name in lib_names:
+        if os.name == "nt":
+            paths.extend(find_library_nt(name))
+        else:
+            path = ctypes.util.find_library(name)
+            if path:
+                paths.append(path)
+
+    if not paths:
+        # We may get here when find_library fails because, for example,
+        # the user does not have sufficient privileges to access those
+        # tools underlying find_library on linux.
+        import glob
+
+        for name in lib_names:
+            patterns = [
+                '/usr/local/lib*/lib%s.*' % name,
+                '/usr/lib*/lib%s.*' % name,
+                'lib%s.*' % name,
+                '%s.dll' % name]
+
+            for pat in patterns:
+                files = glob.glob(pat)
+                if files:
+                    paths.extend(files)
+    for path in paths:
+        try:
+            lib = CDLL(path)
+            if hasattr(lib, search_symbol):
+                logging.info('loading %s from %s', library_name, path)
+                return lib
+            else:
+                logging.warn('can\'t find symbol %s in %s', search_symbol,
+                             path)
+        except Exception:
+            pass
+    return None
+
 
 def run_cipher(cipher, decipher):
     from os import urandom
@@ -49,3 +126,19 @@ def run_cipher(cipher, decipher):
     end = time.time()
     print('speed: %d bytes/s' % (BLOCK_SIZE * rounds / (end - start)))
     assert b''.join(results) == plain
+
+
+def test_find_library():
+    assert find_library('c', 'strcpy', 'libc') is not None
+    assert find_library(['c'], 'strcpy', 'libc') is not None
+    assert find_library(('c',), 'strcpy', 'libc') is not None
+    assert find_library(('crypto', 'eay32'), 'EVP_CipherUpdate',
+                        'libcrypto') is not None
+    assert find_library('notexist', 'strcpy', 'libnotexist') is None
+    assert find_library('c', 'symbol_not_exist', 'c') is None
+    assert find_library(('notexist', 'c', 'crypto', 'eay32'),
+                        'EVP_CipherUpdate', 'libc') is not None
+
+
+if __name__ == '__main__':
+    test_find_library()

shadowsocks/daemon.py

@@ -43,9 +43,6 @@ def daemon_exec(config):
             command = 'start'
         pid_file = config['pid-file']
         log_file = config['log-file']
-        command = common.to_str(command)
-        pid_file = common.to_str(pid_file)
-        log_file = common.to_str(log_file)
         if command == 'start':
             daemon_start(pid_file, log_file)
         elif command == 'stop':
@@ -183,3 +180,35 @@ def daemon_stop(pid_file):
         sys.exit(1)
     print('stopped')
     os.unlink(pid_file)
+
+
+def set_user(username):
+    if username is None:
+        return
+
+    import pwd
+    import grp
+
+    try:
+        pwrec = pwd.getpwnam(username)
+    except KeyError:
+        logging.error('user not found: %s' % username)
+        raise
+    user = pwrec[0]
+    uid = pwrec[2]
+    gid = pwrec[3]
+
+    cur_uid = os.getuid()
+    if uid == cur_uid:
+        return
+    if cur_uid != 0:
+        logging.error('can not set user as nonroot user')
+        # will raise later
+
+    # inspired by supervisor
+    if hasattr(os, 'setgroups'):
+        groups = [grprec[2] for grprec in grp.getgrall() if user in grprec[3]]
+        groups.insert(0, gid)
+        os.setgroups(groups)
+    os.setgid(gid)
+    os.setuid(uid)

shadowsocks/encrypt.py

@@ -28,26 +28,18 @@ import sys
 import hashlib
 import logging
 
-from shadowsocks.crypto import m2, rc4_md5, salsa20_ctr,\
-    ctypes_openssl, ctypes_libsodium, table
+from shadowsocks.crypto import rc4_md5, openssl, sodium, table
 
 
 method_supported = {}
 method_supported.update(rc4_md5.ciphers)
-method_supported.update(salsa20_ctr.ciphers)
-method_supported.update(ctypes_openssl.ciphers)
-method_supported.update(ctypes_libsodium.ciphers)
-# let M2Crypto override ctypes_openssl
-method_supported.update(m2.ciphers)
+method_supported.update(openssl.ciphers)
+method_supported.update(sodium.ciphers)
 method_supported.update(table.ciphers)
 
 
 def random_string(length):
-    try:
-        import M2Crypto.Rand
-        return M2Crypto.Rand.rand_bytes(length)
-    except ImportError:
-        return os.urandom(length)
+    return os.urandom(length)
 
 
 cached_keys = {}

shadowsocks/eventloop.py

@@ -232,8 +232,9 @@ class EventLoop(object):
                     logging.error(e)
                     import traceback
                     traceback.print_exc()
-            for handler in self._handlers_to_remove:
-                self._handlers.remove(handler)
+            if self._handlers_to_remove:
+                for handler in self._handlers_to_remove:
+                    self._handlers.remove(handler)
                 self._handlers_to_remove = []
             self._iterating = False
 

shadowsocks/local.py

@@ -30,8 +30,7 @@ import logging
 import signal
 
 sys.path.insert(0, os.path.join(os.path.dirname(__file__), '../'))
-from shadowsocks import utils, daemon, encrypt, eventloop, tcprelay, udprelay,\
-    asyncdns
+from shadowsocks import utils, daemon, eventloop, tcprelay, udprelay, asyncdns
 
 
 def main():
@@ -49,8 +48,6 @@ def main():
 
     utils.print_shadowsocks()
 
-    encrypt.try_cipher(config['password'], config['method'])
-
     try:
         logging.info("starting local at %s:%d" %
                      (config['local_address'], config['local_port']))
@@ -73,13 +70,14 @@ def main():
             sys.exit(1)
         signal.signal(signal.SIGINT, int_handler)
 
+        daemon.set_user(config.get('user', None))
         loop.run()
-    except (KeyboardInterrupt, IOError, OSError) as e:
+    except Exception as e:
         logging.error(e)
         if config['verbose']:
             import traceback
             traceback.print_exc()
-        os._exit(1)
+        sys.exit(1)
 
 if __name__ == '__main__':
     main()

shadowsocks/server.py

@@ -30,8 +30,7 @@ import logging
 import signal
 
 sys.path.insert(0, os.path.join(os.path.dirname(__file__), '../'))
-from shadowsocks import utils, daemon, encrypt, eventloop, tcprelay, udprelay,\
-    asyncdns
+from shadowsocks import utils, daemon, eventloop, tcprelay, udprelay, asyncdns
 
 
 def main():
@@ -57,7 +56,6 @@ def main():
         else:
             config['port_password'][str(server_port)] = config['password']
 
-    encrypt.try_cipher(config['password'], config['method'])
     tcp_servers = []
     udp_servers = []
     dns_resolver = asyncdns.DNSResolver()
@@ -86,13 +84,15 @@ def main():
             loop = eventloop.EventLoop()
             dns_resolver.add_to_loop(loop)
             list(map(lambda s: s.add_to_loop(loop), tcp_servers + udp_servers))
+
+            daemon.set_user(config.get('user', None))
             loop.run()
-        except (KeyboardInterrupt, IOError, OSError) as e:
+        except Exception as e:
             logging.error(e)
             if config['verbose']:
                 import traceback
                 traceback.print_exc()
-            os._exit(1)
+            sys.exit(1)
 
     if int(config['workers']) > 1:
         if os.name == 'posix':

shadowsocks/tcprelay.py

@@ -1,7 +1,7 @@
 #!/usr/bin/python
 # -*- coding: utf-8 -*-
 
-# Copyright (c) 2014 clowwindy
+# Copyright (c) 2015 clowwindy
 #
 # Permission is hereby granted, free of charge, to any person obtaining a copy
 # of this software and associated documentation files (the "Software"), to deal
@@ -43,30 +43,22 @@ TIMEOUT_PRECISION = 4
 
 MSG_FASTOPEN = 0x20000000
 
-# SOCKS CMD defination
+# SOCKS command definition
 CMD_CONNECT = 1
 CMD_BIND = 2
 CMD_UDP_ASSOCIATE = 3
 
-# TCP Relay can be either sslocal or ssserver
-# for sslocal it is called is_local=True
-
 # for each opening port, we have a TCP Relay
+
 # for each connection, we have a TCP Relay Handler to handle the connection
 
 # for each handler, we have 2 sockets:
 #    local:   connected to the client
 #    remote:  connected to remote server
 
-# for each handler, we have 2 streams:
-#    upstream:    from client to server direction
-#                 read local and write to remote
-#    downstream:  from server to client direction
-#                 read remote and write to local
-
 # for each handler, it could be at one of several stages:
 
-# sslocal:
+# as sslocal:
 # stage 0 SOCKS hello received from local, send hello to local
 # stage 1 addr received from local, query DNS for remote
 # stage 2 UDP assoc
@@ -74,7 +66,7 @@ CMD_UDP_ASSOCIATE = 3
 # stage 4 still connecting, more data from local received
 # stage 5 remote connected, piping local and remote
 
-# ssserver:
+# as ssserver:
 # stage 0 just jump to stage 1
 # stage 1 addr received from local, query DNS for remote
 # stage 3 DNS resolved, connect to remote
@@ -89,11 +81,16 @@ STAGE_CONNECTING = 4
 STAGE_STREAM = 5
 STAGE_DESTROYED = -1
 
-# stream direction
+# for each handler, we have 2 stream directions:
+#    upstream:    from client to server direction
+#                 read local and write to remote
+#    downstream:  from server to client direction
+#                 read remote and write to local
+
 STREAM_UP = 0
 STREAM_DOWN = 1
 
-# stream wait status, indicating it's waiting for reading, etc
+# for each stream, it's waiting for reading, or writing, or both
 WAIT_STATUS_INIT = 0
 WAIT_STATUS_READING = 1
 WAIT_STATUS_WRITING = 2
@@ -112,6 +109,9 @@ class TCPRelayHandler(object):
         self._remote_sock = None
         self._config = config
         self._dns_resolver = dns_resolver
+
+        # TCP Relay works as either sslocal or ssserver
+        # if is_local, this is sslocal
         self._is_local = is_local
         self._stage = STAGE_INIT
         self._encryptor = encrypt.Encryptor(config['password'],
@@ -121,7 +121,12 @@ class TCPRelayHandler(object):
         self._data_to_write_to_remote = []
         self._upstream_status = WAIT_STATUS_READING
         self._downstream_status = WAIT_STATUS_INIT
+        self._client_address = local_sock.getpeername()[:2]
         self._remote_address = None
+        if 'forbidden_ip' in config:
+            self._forbidden_iplist = config['forbidden_ip']
+        else:
+            self._forbidden_iplist = None
         if is_local:
             self._chosen_server = self._get_a_server()
         fd_to_handlers[local_sock.fileno()] = self
@@ -294,8 +299,9 @@ class TCPRelayHandler(object):
             if header_result is None:
                 raise Exception('can not parse header')
             addrtype, remote_addr, remote_port, header_length = header_result
-            logging.info('connecting %s:%d' % (common.to_str(remote_addr),
-                                               remote_port))
+            logging.info('connecting %s:%d from %s:%d' %
+                         (common.to_str(remote_addr), remote_port,
+                          self._client_address[0], self._client_address[1]))
             self._remote_address = (remote_addr, remote_port)
             # pause reading
             self._update_stream(STREAM_UP, WAIT_STATUS_WRITING)
@@ -317,7 +323,7 @@ class TCPRelayHandler(object):
                 self._dns_resolver.resolve(remote_addr,
                                            self._handle_dns_resolved)
         except Exception as e:
-            logging.error(e)
+            self._log_error(e)
             if self._config['verbose']:
                 traceback.print_exc()
             # TODO use logging when debug completed
@@ -329,6 +335,10 @@ class TCPRelayHandler(object):
         if len(addrs) == 0:
             raise Exception("getaddrinfo failed for %s:%d" % (ip,  port))
         af, socktype, proto, canonname, sa = addrs[0]
+        if self._forbidden_iplist:
+            if common.to_str(sa[0]) in self._forbidden_iplist:
+                raise Exception('IP %s is in forbidden list, reject' %
+                                common.to_str(sa[0]))
         remote_sock = socket.socket(af, socktype, proto)
         self._remote_sock = remote_sock
         self._fd_to_handlers[remote_sock.fileno()] = self
@@ -338,12 +348,13 @@ class TCPRelayHandler(object):
 
     def _handle_dns_resolved(self, result, error):
         if error:
-            logging.error(error)
+            self._log_error(error)
             self.destroy()
             return
         if result:
             ip = result[1]
             if ip:
+
                 try:
                     self._stage = STAGE_CONNECTING
                     remote_addr = ip
@@ -376,7 +387,7 @@ class TCPRelayHandler(object):
                         self._update_stream(STREAM_UP, WAIT_STATUS_READWRITING)
                         self._update_stream(STREAM_DOWN, WAIT_STATUS_READING)
                     return
-                except (OSError, IOError) as e:
+                except Exception as e:
                     logging.error(e)
                     if self._config['verbose']:
                         traceback.print_exc()
@@ -507,6 +518,10 @@ class TCPRelayHandler(object):
         else:
             logging.warn('unknown socket')
 
+    def _log_error(self, e):
+        logging.error('%s when handling connection from %s:%d' %
+                      (e, self._client_address[0], self._client_address[1]))
+
     def destroy(self):
         # destroy the handler and release any resources
         # promises:

shadowsocks/udprelay.py

@@ -112,6 +112,10 @@ class UDPRelay(object):
         self._closed = False
         self._last_time = time.time()
         self._sockets = set()
+        if 'forbidden_ip' in config:
+            self._forbidden_iplist = config['forbidden_ip']
+        else:
+            self._forbidden_iplist = None
 
         addrs = socket.getaddrinfo(self._listen_addr, self._listen_port, 0,
                                    socket.SOCK_DGRAM, socket.SOL_UDP)
@@ -178,6 +182,12 @@ class UDPRelay(object):
                                        socket.SOCK_DGRAM, socket.SOL_UDP)
             if addrs:
                 af, socktype, proto, canonname, sa = addrs[0]
+                if self._forbidden_iplist:
+                    if common.to_str(sa[0]) in self._forbidden_iplist:
+                        logging.debug('IP %s is in forbidden list, drop' %
+                                      common.to_str(sa[0]))
+                        # drop
+                        return
                 client = socket.socket(af, socktype, proto)
                 client.setblocking(False)
                 self._cache[key] = client

shadowsocks/utils.py

@@ -29,7 +29,8 @@ import json
 import sys
 import getopt
 import logging
-from shadowsocks.common import to_bytes, to_str
+from shadowsocks.common import to_bytes, to_str, IPNetwork
+from shadowsocks import encrypt
 
 
 VERBOSE_LEVEL = 5
@@ -68,7 +69,28 @@ def find_config():
     return None
 
 
-def check_config(config):
+def check_config(config, is_local):
+    if config.get('daemon', None) == 'stop':
+        # no need to specify configuration for daemon stop
+        return
+
+    if is_local and not config.get('password', None):
+        logging.error('password not specified')
+        print_help(is_local)
+        sys.exit(2)
+
+    if not is_local and not config.get('password', None) \
+            and not config.get('port_password', None):
+        logging.error('password or port_password not specified')
+        print_help(is_local)
+        sys.exit(2)
+
+    if 'local_port' in config:
+        config['local_port'] = int(config['local_port'])
+
+    if 'server_port' in config and type(config['server_port']) != list:
+        config['server_port'] = int(config['server_port'])
+
     if config.get('local_address', '') in [b'0.0.0.0']:
         logging.warn('warning: local set to listen on 0.0.0.0, it\'s not safe')
     if config.get('server', '') in [b'127.0.0.1', b'localhost']:
@@ -89,7 +111,13 @@ def check_config(config):
     if config.get('password') in [b'mypassword']:
         logging.error('DON\'T USE DEFAULT PASSWORD! Please change it in your '
                       'config.json!')
-        exit(1)
+        sys.exit(1)
+    if config.get('user', None) is not None:
+        if os.name != 'posix':
+            logging.error('user can be used only on Unix')
+            sys.exit(1)
+
+    encrypt.try_cipher(config['password'], config['method'])
 
 
 def get_config(is_local):
@@ -97,10 +125,11 @@ def get_config(is_local):
                         format='%(levelname)-s: %(message)s')
     if is_local:
         shortopts = 'hd:s:b:p:k:l:m:c:t:vq'
-        longopts = ['help', 'fast-open', 'pid-file=', 'log-file=']
+        longopts = ['help', 'fast-open', 'pid-file=', 'log-file=', 'user=']
     else:
         shortopts = 'hd:s:p:k:m:c:t:vq'
-        longopts = ['help', 'fast-open', 'pid-file=', 'log-file=', 'workers=']
+        longopts = ['help', 'fast-open', 'pid-file=', 'log-file=', 'workers=',
+                    'forbidden-ip=', 'user=']
     try:
         config_path = find_config()
         optlist, args = getopt.getopt(sys.argv[1:], shortopts, longopts)
@@ -146,6 +175,10 @@ def get_config(is_local):
                 config['fast_open'] = True
             elif key == '--workers':
                 config['workers'] = int(value)
+            elif key == '--user':
+                config['user'] = to_str(value)
+            elif key == '--forbidden-ip':
+                config['forbidden_ip'] = to_str(value).split(',')
             elif key in ('-h', '--help'):
                 if is_local:
                     print_local_help()
@@ -153,11 +186,11 @@ def get_config(is_local):
                     print_server_help()
                 sys.exit(0)
             elif key == '-d':
-                config['daemon'] = value
+                config['daemon'] = to_str(value)
             elif key == '--pid-file':
-                config['pid-file'] = value
+                config['pid-file'] = to_str(value)
             elif key == '--log-file':
-                config['log-file'] = value
+                config['log-file'] = to_str(value)
             elif key == '-q':
                 v_count -= 1
                 config['verbose'] = v_count
@@ -172,7 +205,7 @@ def get_config(is_local):
         sys.exit(2)
 
     config['password'] = config.get('password', '')
-    config['method'] = config.get('method', 'aes-256-cfb')
+    config['method'] = config.get('method', b'aes-256-cfb')
     config['port_password'] = config.get('port_password', None)
     config['timeout'] = int(config.get('timeout', 300))
     config['fast_open'] = config.get('fast_open', False)
@@ -190,25 +223,14 @@ def get_config(is_local):
             sys.exit(2)
     else:
         config['server'] = config.get('server', '0.0.0.0')
+        try:
+            config['forbidden_ip'] = \
+                IPNetwork(config.get('forbidden_ip', '127.0.0.0/8,::1/128'))
+        except Exception as e:
+            logging.error(e)
+            sys.exit(2)
     config['server_port'] = config.get('server_port', 8388)
 
-    if is_local and not config.get('password', None):
-        logging.error('password not specified')
-        print_help(is_local)
-        sys.exit(2)
-
-    if not is_local and not config.get('password', None) \
-            and not config.get('port_password', None):
-        logging.error('password or port_password not specified')
-        print_help(is_local)
-        sys.exit(2)
-
-    if 'local_port' in config:
-        config['local_port'] = int(config['local_port'])
-
-    if 'server_port' in config and type(config['server_port']) != list:
-        config['server_port'] = int(config['server_port'])
-
     logging.getLogger('').handlers = []
     logging.addLevelName(VERBOSE_LEVEL, 'VERBOSE')
     if config['verbose'] >= 2:
@@ -225,7 +247,7 @@ def get_config(is_local):
                         format='%(asctime)s %(levelname)-8s %(message)s',
                         datefmt='%Y-%m-%d %H:%M:%S')
 
-    check_config(config)
+    check_config(config, is_local)
 
     return config
 
@@ -238,9 +260,7 @@ def print_help(is_local):
 
 
 def print_local_help():
-    print('''usage: sslocal [-h] -s SERVER_ADDR [-p SERVER_PORT]
-               [-b LOCAL_ADDR] [-l LOCAL_PORT] -k PASSWORD [-m METHOD]
-               [-t TIMEOUT] [-c CONFIG] [--fast-open] [-v] -[d] [-q]
+    print('''usage: sslocal [OPTION]...
 A fast tunnel proxy that helps you bypass firewalls.
 
 You can supply configurations via either config file or command line arguments.
@@ -261,17 +281,16 @@ General options:
   -d start/stop/restart  daemon mode
   --pid-file PID_FILE    pid file for daemon mode
   --log-file LOG_FILE    log file for daemon mode
+  --user USER            username to run as
   -v, -vv                verbose mode
   -q, -qq                quiet mode, only show warnings/errors
 
-Online help: <https://github.com/clowwindy/shadowsocks>
+Online help: <https://github.com/shadowsocks/shadowsocks>
 ''')
 
 
 def print_server_help():
-    print('''usage: ssserver [-h] [-s SERVER_ADDR] [-p SERVER_PORT] -k PASSWORD
-                -m METHOD [-t TIMEOUT] [-c CONFIG] [--fast-open]
-                [--workers WORKERS] [-v] [-d start] [-q]
+    print('''usage: ssserver [OPTION]...
 A fast tunnel proxy that helps you bypass firewalls.
 
 You can supply configurations via either config file or command line arguments.
@@ -286,15 +305,17 @@ Proxy options:
   -t TIMEOUT             timeout in seconds, default: 300
   --fast-open            use TCP_FASTOPEN, requires Linux 3.7+
   --workers WORKERS      number of workers, available on Unix/Linux
+  --forbidden-ip IPLIST  comma seperated IP list forbidden to connect
 
 General options:
   -d start/stop/restart  daemon mode
   --pid-file PID_FILE    pid file for daemon mode
   --log-file LOG_FILE    log file for daemon mode
+  --user USER            username to run as
   -v, -vv                verbose mode
   -q, -qq                quiet mode, only show warnings/errors
 
-Online help: <https://github.com/clowwindy/shadowsocks>
+Online help: <https://github.com/shadowsocks/shadowsocks>
 ''')
 
 

tests/coverage_server.py

@@ -11,7 +11,7 @@ if __name__ == '__main__':
                 with open('/tmp/%s-coverage' % project, 'rb') as f:
                     coverage = f.read().strip()
                     n = int(coverage.strip('%'))
-                    if n > 80:
+                    if n >= 80:
                         color = 'brightgreen'
                     else:
                         color = 'yellow'

tests/test.py

@@ -40,6 +40,10 @@ parser.add_argument('-s', '--server-conf', type=str, default=None)
 parser.add_argument('-a', '--client-args', type=str, default=None)
 parser.add_argument('-b', '--server-args', type=str, default=None)
 parser.add_argument('--with-coverage', action='store_true', default=None)
+parser.add_argument('--should-fail', action='store_true', default=None)
+parser.add_argument('--tcp-only', action='store_true', default=None)
+parser.add_argument('--url', type=str, default='http://www.example.com/')
+parser.add_argument('--dns', type=str, default='8.8.8.8')
 
 config = parser.parse_args()
 
@@ -94,7 +98,7 @@ try:
                     stage = 5
             if bytes != str:
                 line = str(line, 'utf8')
-            sys.stdout.write(line)
+            sys.stderr.write(line)
             if line.find('starting local') >= 0:
                 local_ready = True
             if line.find('starting server') >= 0:
@@ -103,7 +107,7 @@ try:
         if stage == 1:
             time.sleep(2)
 
-            p3 = Popen(['curl', 'http://www.example.com/', '-v', '-L',
+            p3 = Popen(['curl', config.url, '-v', '-L',
                         '--socks5-hostname', '127.0.0.1:1081',
                         '-m', '15', '--connect-timeout', '10'],
                        stdin=PIPE, stdout=PIPE, stderr=PIPE, close_fds=True)
@@ -118,9 +122,16 @@ try:
             fdset.remove(p3.stdout)
             fdset.remove(p3.stderr)
             r = p3.wait()
-            if r != 0:
-                sys.exit(1)
-            p4 = Popen(['socksify', 'dig', '@8.8.8.8', 'www.google.com'],
+            if config.should_fail:
+                if r == 0:
+                    sys.exit(1)
+            else:
+                if r != 0:
+                    sys.exit(1)
+            if config.tcp_only:
+                break
+            p4 = Popen(['socksify', 'dig', '@%s' % config.dns,
+                        'www.google.com'],
                        stdin=PIPE, stdout=PIPE, stderr=PIPE, close_fds=True)
             if p4 is not None:
                 fdset.append(p4.stdout)
@@ -131,9 +142,14 @@ try:
 
         if stage == 5:
             r = p4.wait()
-            if r != 0:
-                sys.exit(1)
-            print('test passed')
+            if config.should_fail:
+                if r == 0:
+                    sys.exit(1)
+                print('test passed (expecting failure)')
+            else:
+                if r != 0:
+                    sys.exit(1)
+                print('test passed')
             break
 finally:
     for p in [p1, p2]:

tests/test_command.sh

@@ -30,11 +30,13 @@ $LOCAL 2>/dev/null 1>/dev/null -m rc4-md5 -k testrc4 -s 127.0.0.1 -p 8388 -d sto
 assert "$LOCAL 2>&1 -m rc4-md5 -p 8388 -k testrc4 -d start | grep ERROR |  awk -F\"ERROR\" '{print \$2}'" ": server addr not specified"
 $LOCAL 2>/dev/null 1>/dev/null -m rc4-md5 -k testrc4 -s 127.0.0.1 -p 8388 -d stop
 
-assert "$LOCAL 2>&1 -m rc4-md5 -p 8388 -s 0.0.0.0 -d start | grep ERROR |  awk -F\"ERROR\" '{print \$2}'" ": password not specified"
+assert "$LOCAL 2>&1 -m rc4-md5 -p 8388 -s 0.0.0.0 -d start | grep ERROR |  awk -F\"ERROR\" '{print \$2}'" "    password not specified"
 $LOCAL 2>/dev/null 1>/dev/null -m rc4-md5 -k testrc4 -s 127.0.0.1 -p 8388 -d stop
 
-assert "$SERVER 2>&1 -m rc4-md5 -p 8388 -s 0.0.0.0 -d start | grep ERROR |  awk -F\"ERROR\" '{print \$2}'" ": password or port_password not specified"
+assert "$SERVER 2>&1 -m rc4-md5 -p 8388 -s 0.0.0.0 -d start | grep ERROR |  awk -F\"ERROR\" '{print \$2}'" "    password or port_password not specified"
 $LOCAL 2>/dev/null 1>/dev/null -m rc4-md5 -k testrc4 -s 127.0.0.1 -p 8388 -d stop
 
+assert "$SERVER 2>&1 --forbidden-ip 127.0.0.1/4a -m rc4-md5 -k 12345 -p 8388 -s 0.0.0.0 -d start | grep ERROR |  awk -F\"ERROR\" '{print \$2}'" ": Not a valid CIDR notation: 127.0.0.1/4a"
+$LOCAL 2>/dev/null 1>/dev/null -m rc4-md5 -k testrc4 -s 127.0.0.1 -p 8388 -d stop
 
 assert_end command

tests/test_large_file.sh

@@ -8,7 +8,7 @@ mkdir -p tmp
 $PYTHON shadowsocks/local.py -c tests/aes.json &
 LOCAL=$!
 
-$PYTHON shadowsocks/server.py -c tests/aes.json &
+$PYTHON shadowsocks/server.py -c tests/aes.json --forbidden-ip "" &
 SERVER=$!
 
 sleep 3

utils/README.md

@@ -0,0 +1,9 @@
+Useful Tools
+===========
+
+autoban.py
+----------
+
+Automatically ban IPs that try to brute force crack the server.
+
+See https://github.com/shadowsocks/shadowsocks/wiki/Ban-Brute-Force-Crackers

utils/autoban.py

@@ -0,0 +1,51 @@
+#!/usr/bin/python
+# -*- coding: utf-8 -*-
+
+# Copyright (c) 2015 clowwindy
+#
+# 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.
+
+from __future__ import absolute_import, division, print_function, \
+    with_statement
+
+import os
+import sys
+import argparse
+
+if __name__ == '__main__':
+    parser = argparse.ArgumentParser(description='See README')
+    parser.add_argument('-c', '--count', default=3, type=int,
+                        help='with how many failure times it should be '
+                             'considered as an attack')
+    config = parser.parse_args()
+    ips = {}
+    banned = set()
+    for line in sys.stdin:
+        if 'can not parse header when' in line:
+            ip = line.split()[-1].split(':')[0]
+            if ip not in ips:
+                ips[ip] = 1
+                print(ip)
+            else:
+                ips[ip] += 1
+            if ip not in banned and ips[ip] >= config.count:
+                banned.add(ip)
+                cmd = 'iptables -A INPUT -s %s -j DROP' % ip
+                print(cmd, file=sys.stderr)
+                os.system(cmd)