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#!/usr/bin/python
# -*- coding:utf-8 -*-
import re
from ProxyDecoder import baseFunc
def __ssPlainDecode(url: str) -> dict:
"""
Shadowsocks原始分享链接解码
FORMAT: ss://method:password@hostname:port#TAG
EXAMPLE:
ss://bf-cfb:test@192.168.100.1:8888#EXAMPLE
"""
remark = ''
match = re.search(r'^ss://([\S]+)$', url) # ss://...
if match[1].find('#') != -1: # ...#REMARK
match = re.search(r'^([\S]+)#([\S]*)$', match[1])
remark = baseFunc.urlDecode(
match[2] if match[2] is not None else ''
)
match = re.search(
r'^([\S]+?):([\S]+)@([a-zA-Z0-9.:\-_\[\]]+):([0-9]+)$', match[1] # method:password@server:port
)
return {
'server': baseFunc.formatHost(match[3]),
'port': int(match[4]),
'passwd': match[2],
'method': match[1],
'remark': remark
}
def __ssCommonDecode(url: str) -> dict:
"""
Shadowsocks经典分享链接解码
FORMAT: ss://BASE64-ENCODED-STRING-WITHOUT-PADDING#TAG
EXAMPLE:
base64('bf-cfb:test/!@#:@192.168.100.1:8888')
-> YmYtY2ZiOnRlc3QvIUAjOkAxOTIuMTY4LjEwMC4xOjg4ODg
-> ss://YmYtY2ZiOnRlc3QvIUAjOkAxOTIuMTY4LjEwMC4xOjg4ODg#example-server
"""
match = re.search(r'^ss://([a-zA-Z0-9\-_+\\=]+)#?([\S]*)?$', url) # base64#REMARK
remark = baseFunc.urlDecode(
match[2] if match[2] is not None else ''
)
match = re.search(
r'^([\S]+?):([\S]+)@([a-zA-Z0-9.:\-_\[\]]+):([0-9]+)$',
baseFunc.base64Decode(match[1]) # method:password@server:port
)
return {
'server': baseFunc.formatHost(match[3]),
'port': int(match[4]),
'passwd': match[2],
'method': match[1],
'remark': remark
}
def __sip002Decode(url: str) -> dict:
"""
Shadowsocks SIP002分享链接解码
FORMAT:
SS-URI = "ss://" {userinfo} "@" hostname ":" port [ "/" ] [ "?" plugin ] [ "#" tag ]
userinfo = websafe-base64-encode-utf8(method ":" password)
EXAMPLE:
base64('rc4-md5:passwd') -> cmM0LW1kNTpwYXNzd2Q
obfs-local;obfs=http -> obfs-local%3Bobfs%3Dhttp
=> ss://cmM0LW1kNTpwYXNzd2Q@192.168.100.1:8888/?plugin=obfs-local%3Bobfs%3Dhttp#Example
"""
match = re.search(
r'^ss://([a-zA-Z0-9\-_+\\=]+)@([a-zA-Z0-9.:\-_\[\]]+):([0-9]+)'
r'/?([\S]*)$', url # base64@server:port/... (/可选)
)
userInfo = re.search(
r'^([\S]+?):([\S]+)$',
baseFunc.base64Decode(match[1]) # method:password
)
info = {
'server': baseFunc.formatHost(match[2]),
'port': int(match[3]),
'passwd': userInfo[2],
'method': userInfo[1],
'remark': ''
}
if match[4].find('#') != -1: # ...#REMARK
match = re.search(
r'^\??([\S]*)#([\S]*)$', match[4] # ?...#REMARK (?可选)
)
info['remark'] = baseFunc.urlDecode(match[2])
else:
match = re.search(
r'^\??([\S]*)$', match[4] # ?... (?可选)
)
params = baseFunc.paramSplit(match[1]) # /?plugin=...&other1=...&other2=...
pluginField = params['plugin'] if 'plugin' in params else ''
if pluginField.find(';') == -1: # plugin=... (无参数)
pluginObject = {
'type': pluginField,
'param': ''
}
else: # plugin=...;... (带参数)
match = re.search(r'^([\S]*?);([\S]*)$', pluginField) # 插件名;插件参数
pluginObject = {
'type': match[1],
'param': match[2]
}
if pluginObject['type'] != '': # 带插件时配置
info['plugin'] = pluginObject
return info
def decode(url: str, compatible: bool = False) -> dict or None:
if url.split('://')[0] != 'ss':
raise Exception('Unexpected scheme')
try:
ssInfo = __ssCommonDecode(url) # try shadowsocks common decode
except:
try:
ssInfo = __sip002Decode(url) # try shadowsocks sip002 decode
except:
try:
ssInfo = __ssPlainDecode(url) # try shadowsocks plain decode
except:
raise Exception('Url could not be parsed')
if compatible and 'remark' in ssInfo: # 向后兼容部分客户端
ssInfo['remark'] = ssInfo['remark'].replace('+', ' ')
return {
**{'type': 'ss'},
**ssInfo
}