add test

.travis.yml

@@ -4,7 +4,9 @@ python:
   - 2.7
 before_install:
   - sudo apt-get update -qq
-  - sudo apt-get install -qq build-essential libssl-dev swig libevent-dev python-gevent python-m2crypto
+  - sudo apt-get install -qq build-essential libssl-dev swig libevent-dev python-gevent python-m2crypto python-numpy
-  - pip install gevent m2crypto
+  - pip install gevent m2crypto salsa20
 script:
-  - python test.py
+  - python test.py -c test/table.json
+  - python test.py -c test/aes.json
+  - python test.py -c test/salsa20.json

README.md

@@ -21,7 +21,7 @@ Install Shadowsocks.
 
 #### Debian / Ubuntu:
 
-    apt-get install python-gevent python-m2crypto
+    apt-get install python-pip python-gevent python-m2crypto
     pip install shadowsocks
 
 #### CentOS:
@@ -94,6 +94,20 @@ You can use args to override settings from `config.json`.
     ssserver -p server_port -k password -m bf-cfb
     ssserver -c /etc/shadowsocks/config.json
 
+Salsa20
+-------
+
+Salsa20 is a fast stream cipher.
+
+Use "salsa20-ctr" in shadowsocks.json.
+
+And install these packages:
+
+#### Debian / Ubuntu:
+
+    apt-get install python-numpy
+    pip install salsa20
+
 Wiki
 ----
 

config.json

@@ -4,7 +4,7 @@
     "local_port":1080,
     "password":"barfoo!",
     "timeout":300,
-    "method":"table",
+    "method":"aes-256-cfb",
     "local_address":"127.0.0.1",
     "fast_open":false
 }

shadowsocks/encrypt.py

@@ -151,7 +151,8 @@ class Encryptor(object):
         if m:
             key, iv_ = EVP_BytesToKey(password, m[0], m[1])
             if iv is None:
-                iv = iv_[:m[1]]
+                iv = iv_
+            iv = iv[:m[1]]
             if op == 1:
                 self.cipher_iv = iv[:m[1]]  # this iv is for cipher not decipher
             if method != 'salsa20-ctr':

test.py

@@ -82,9 +82,9 @@ decrypt_table = string.maketrans(encrypt_table, string.maketrans('', ''))
 for i in range(0, 256):
     assert(target2[0][i] == ord(encrypt_table[i]))
     assert(target2[1][i] == ord(decrypt_table[i]))
-p1 = Popen(['python', 'shadowsocks/server.py', '-c', 'test/config.json'], shell=False, bufsize=0, stdin=PIPE, 
+p1 = Popen(['python', 'shadowsocks/server.py', '-c', sys.argv[-1]], shell=False, bufsize=0, stdin=PIPE, 
     stdout=PIPE, stderr=PIPE, close_fds=True)
-p2 = Popen(['python', 'shadowsocks/local.py', '-c', 'test/config.json'], shell=False, bufsize=0, stdin=PIPE,
+p2 = Popen(['python', 'shadowsocks/local.py', '-c', sys.argv[-1]], shell=False, bufsize=0, stdin=PIPE,
     stdout=PIPE, stderr=PIPE, close_fds=True)
 p3 = None
 

test/salsa20.json

@@ -0,0 +1,10 @@
+{
+    "server":"127.0.0.1",
+    "server_port":8388,
+    "local_port":1080,
+    "password":"barfoo!",
+    "timeout":300,
+    "method":"salsa20-ctr",
+    "local_address":"127.0.0.1",
+    "fast_open":false
+}

test/table.json

@@ -0,0 +1,10 @@
+{
+    "server":"127.0.0.1",
+    "server_port":8388,
+    "local_port":1080,
+    "password":"barfoo!",
+    "timeout":300,
+    "method":"table",
+    "local_address":"127.0.0.1",
+    "fast_open":false
+}