mirror of https://github.com/dnomd343/ProxyC
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
267 lines
10 KiB
267 lines
10 KiB
#!/usr/bin/python
|
|
# -*- coding:utf-8 -*-
|
|
|
|
import re
|
|
import IPy
|
|
import copy
|
|
|
|
def isHost(host: str) -> bool:
|
|
"""
|
|
判断host是否合法
|
|
|
|
IPv4 / IPv6 / Domain
|
|
|
|
合法: return True
|
|
|
|
不合法: return False
|
|
"""
|
|
try:
|
|
IPy.IP(host)
|
|
if host.find('/') != -1: # filter CIDR
|
|
return False
|
|
if host.find('.') == -1 and host.find(':') == -1:
|
|
return False
|
|
return True # IP地址合法
|
|
except:
|
|
pass
|
|
try:
|
|
return re.search( # 域名匹配
|
|
r'^(?=^.{3,255}$)[a-zA-Z0-9_][a-zA-Z0-9_-]{0,62}(\.[a-zA-Z0-9_][a-zA-Z0-9_-]{0,62})+$', host
|
|
) is not None
|
|
except: # 异常错误
|
|
return False
|
|
|
|
|
|
def isPort(port: int) -> bool:
|
|
"""
|
|
判断端口是否合法
|
|
|
|
1 ~ 65535
|
|
|
|
合法: return True
|
|
|
|
不合法: return False
|
|
"""
|
|
try:
|
|
if 1 <= port <= 65535: # 1 ~ 65535
|
|
return True
|
|
except: # illegal
|
|
pass
|
|
return False
|
|
|
|
|
|
def toInt(raw) -> int: # change to int
|
|
if isinstance(raw, (int, float)): # int / float -> int
|
|
return int(raw)
|
|
elif isinstance(raw, bytes): # bytes -> str
|
|
raw = str(raw, encoding = 'utf-8')
|
|
elif not isinstance(raw, str):
|
|
raise Exception('type not allowed')
|
|
try:
|
|
return int(raw)
|
|
except:
|
|
raise Exception('not a integer')
|
|
|
|
|
|
def toStr(raw) -> str: # change to str
|
|
if raw is None:
|
|
return ''
|
|
elif isinstance(raw, str):
|
|
return raw
|
|
elif isinstance(raw, bytes):
|
|
return str(raw, encoding = 'utf-8')
|
|
else:
|
|
raise Exception('type not allowed')
|
|
|
|
|
|
def toBool(raw) -> bool: # change to bool
|
|
if isinstance(raw, bool):
|
|
return raw
|
|
if isinstance(raw, int):
|
|
raw = str(raw)
|
|
elif isinstance(raw, bytes):
|
|
raw = str(raw, encoding = 'utf-8')
|
|
elif not isinstance(raw, str):
|
|
raise Exception('type not allowed')
|
|
raw = raw.strip().lower()
|
|
if raw == 'true':
|
|
return True
|
|
elif raw == 'false':
|
|
return False
|
|
else:
|
|
try:
|
|
raw = int(raw)
|
|
return raw != 0
|
|
except:
|
|
raise Exception('not a boolean')
|
|
|
|
|
|
def toStrTidy(raw) -> str: # change to str with trim and lower
|
|
return toStr(raw).strip().lower()
|
|
|
|
|
|
class filterException(Exception): # 检测异常
|
|
def __init__(self, reason):
|
|
self.reason = reason
|
|
|
|
|
|
def __dictCheck(data: dict, objectList: dict, limitRules: dict, keyPrefix: str) -> dict: # 递归检查dict
|
|
result = {}
|
|
for key, option in limitRules.items(): # 遍历规则
|
|
keyName = key if keyPrefix == '' else keyPrefix + '.' + key
|
|
|
|
# 检查必选key 补全可选key
|
|
if key not in data:
|
|
if option['optional']: # 必选
|
|
raise filterException('Missing `' + keyName + '` option') # 必选值缺失
|
|
else: # 可选
|
|
data[key] = option['default'] # 补全可选值
|
|
|
|
allowNone = False
|
|
if 'allowNone' in option and option['allowNone']: # 允许为None
|
|
allowNone = True
|
|
|
|
if not (data[key] is None and allowNone): # 忽略允许None且为None的情况
|
|
if 'format' in option: # 预处理数据
|
|
try:
|
|
data[key] = option['format'](data[key])
|
|
except Exception as reason:
|
|
raise filterException('Illegal `' + keyName + '`: ' + str(reason)) # 格式化错误
|
|
|
|
# 检查value类型
|
|
if data[key] is None: # 值为None
|
|
if not allowNone: # 不允许为None
|
|
raise filterException('Unexpected None in `' + keyName + '`')
|
|
result[key] = None
|
|
else:
|
|
dataValue = copy.deepcopy(data[key])
|
|
if isinstance(option['type'], (str, list)) and not isinstance(dataValue, dict): # 子对象下必为dict
|
|
raise filterException('Illegal `' + keyName + '`: should be dictionary')
|
|
if isinstance(option['type'], str): # 单子对象
|
|
result[key] = __dictCheck(dataValue, objectList, objectList[option['type']], keyName) # 检查子对象
|
|
elif isinstance(option['type'], list): # 多子对象
|
|
subResult = None
|
|
errMsg = None
|
|
for valueType in option['type']: # 遍历子Object
|
|
try:
|
|
subResult = __dictCheck(dataValue, objectList, objectList[valueType], keyName) # 尝试检查子对象
|
|
except filterException as reason:
|
|
errMsg = str(reason) # 捕获抛出信息
|
|
except Exception as reason:
|
|
if str(reason)[:10] == 'index-key:': # index-key匹配错误
|
|
errMsg = str(reason)[10:]
|
|
continue
|
|
else: # 子对象匹配成功
|
|
break
|
|
if subResult is None: # 无匹配子级
|
|
if errMsg is not None: # 存在子级异常信息
|
|
raise filterException(errMsg)
|
|
raise filterException('Error in `' + keyName + '` option')
|
|
result[key] = subResult
|
|
elif not isinstance(data[key], option['type']): # 类型不匹配
|
|
raise filterException('Illegal `' + keyName + '` option')
|
|
else: # 检查无误
|
|
result[key] = dataValue
|
|
|
|
if result[key] is not None and 'filter' in option: # 值不为None且有检查函数
|
|
errFlag = False
|
|
try:
|
|
if not option['filter'](result[key]): # 格式检查
|
|
errFlag = True
|
|
except:
|
|
raise filterException('Filter error in `' + keyName + '`')
|
|
else:
|
|
if errFlag:
|
|
if 'indexKey' in option and option['indexKey']:
|
|
raise Exception('index-key:' + option['errMsg'])
|
|
raise filterException(option['errMsg'])
|
|
return result
|
|
|
|
|
|
def __ruleCheck(ruleSet: dict) -> None: # 规则集合法性检查
|
|
if 'rootObject' not in ruleSet: # 根对象检查
|
|
raise Exception('Miss root object')
|
|
for objName in ruleSet: # 遍历全部对象
|
|
if objName[-6:] != 'Object': # 对象名必须以Object结尾
|
|
raise Exception('Illegal object name `' + objName + '`')
|
|
for key, option in ruleSet[objName].items():
|
|
keyName = '`' + objName + '.' + key + '`'
|
|
if 'optional' not in option or not isinstance(option['optional'], bool): # optional检查
|
|
raise Exception('Illegal optional in ' + keyName)
|
|
if not option['optional'] and 'default' not in option: # optional为False时应有default
|
|
raise Exception('Miss default value in ' + keyName)
|
|
|
|
allowNone = False
|
|
if 'allowNone' in option and not isinstance(option['allowNone'], bool):
|
|
raise Exception('Illegal allowNone in ' + keyName)
|
|
if 'allowNone' in option and option['allowNone']:
|
|
allowNone = True
|
|
|
|
if 'type' not in option: # type值缺失
|
|
raise Exception('Miss type in ' + keyName)
|
|
if not isinstance(option['type'], (type, str, list)): # type为变量类型 / str / list
|
|
raise Exception('Illegal type in ' + keyName)
|
|
if isinstance(option['type'], str) and option['type'] not in ruleSet: # 子Object未定义
|
|
raise Exception('Object `' + option['type'] + '` not found in ' + keyName)
|
|
if isinstance(option['type'], list):
|
|
for subObjName in option['type']:
|
|
if not isinstance(subObjName, str):
|
|
raise Exception('Type list must be str in ' + keyName)
|
|
if subObjName not in ruleSet: # 子Object未定义
|
|
raise Exception('Object `' + subObjName + '` not found in ' + keyName)
|
|
|
|
if 'default' in option:
|
|
if option['default'] is None: # default值检查
|
|
if not allowNone:
|
|
raise Exception(keyName + ' can\'t be None')
|
|
else:
|
|
if isinstance(option['type'], type): # type
|
|
if not isinstance(option['default'], option['type']):
|
|
raise Exception('Error default type in ' + keyName)
|
|
else: # str / list
|
|
if not isinstance(option['default'], dict):
|
|
raise Exception('Default type should be dict in ' + keyName)
|
|
|
|
if 'format' in option and not callable(option['format']): # format必须为函数
|
|
raise Exception('Format option must be a function in ' + keyName)
|
|
if isinstance(option['type'], type) and 'format' not in option: # 指定变量类型时需有format函数
|
|
raise Exception('Miss format in ' + keyName)
|
|
|
|
if 'filter' in option:
|
|
if 'errMsg' not in option: # filter与errMsg同时存在
|
|
raise Exception('Miss errMsg option in ' + keyName)
|
|
if not callable(option['filter']): # filter必须为函数
|
|
raise Exception('Filter option must be a function in ' + keyName)
|
|
if not isinstance(option['type'], type):
|
|
raise Exception('Overage filter option in ' + keyName)
|
|
if 'errMsg' in option and not isinstance(option['errMsg'], str): # errMsg必须为str
|
|
raise Exception('Error message must be str in ' + keyName)
|
|
|
|
if 'indexKey' in option and not isinstance(option['indexKey'], bool): # indexKey必为bool
|
|
raise Exception('Illegal indexKey in ' + keyName)
|
|
|
|
|
|
def ruleFilter(rawData: dict, ruleSet: dict, header: dict) -> tuple[bool, dict or str]:
|
|
"""
|
|
使用规则集检查原始数据
|
|
|
|
原始数据错误:
|
|
return False, {reason}
|
|
|
|
原始数据无误:
|
|
return True, {dist}
|
|
"""
|
|
try:
|
|
__ruleCheck(ruleSet) # 检查规则集
|
|
except Exception as reason:
|
|
return False, 'Filter rules -> ' + str(reason) # 规则集有误
|
|
|
|
data = copy.deepcopy(rawData)
|
|
try:
|
|
data = __dictCheck(data, ruleSet, ruleSet['rootObject'], '') # 开始检查
|
|
except filterException as reason: # 节点格式错误
|
|
return False, str(reason)
|
|
except:
|
|
return False, 'Format error'
|
|
else:
|
|
return True, {**header, **data}
|
|
|