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resolver.py
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resolver.py
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import os
import sys
import re
import chardet
from typing import Tuple,Dict,Set,List
from tld import get_tld
import IPy
from loguru import logger
from readme import Rule
class Resolver(object):
def __init__(self, path:str):
self.path = path
self.options = {# Adblock Plus filter options
'script', '~script',
'image', '~image',
'stylesheet', '~stylesheet',
'object', '~object',
'subdocument', '~subdocument',
'xmlhttprequest', '~xmlhttprequest',
'websocket', '~websocket',
'webrtc', '~webrtc',
'popup',
'generichide',
'genericblock',
'document',
'elemhide',
'third-party', '~third-party',
'ping',
'other',
'match-case',
# AdGuard Advanced capabilities
'ctag',
'all',
'redirect',
'stealth',
'domain'
}
def __ip_or_domain(self, address:str) -> Tuple[str]: # ip, fld, subdomain
ip, fld, subdomain = None, None, None
try:
res = get_tld(address, fix_protocol=True, as_object=True)
fld = res.fld
subdomain = res.subdomain
except Exception as e:
try:
ip_address = IPy.IP(address)
if ip_address.iptype() == "PUBLIC":
ip = address
except Exception as e:
pass
finally:
return ip, fld, subdomain
def __analysis(self, address:str) -> Tuple[str]:
address_tmp = address
if address.rfind(":") > 0:
address_tmp = address[ : address.rfind(":")]
ip, fld, subdomain = self.__ip_or_domain(address_tmp)
if ip:
return address, "" # 可能包含port，因此直接return address
if fld:
return fld, subdomain
raise Exception('"%s": not domain or public ip'%(address))
# host 模式
def __resolveHost(self, line) -> Tuple[str]:
def match(pattern, string):
return True if re.match(pattern, string) else False
try:
block=None
while True:
# #* 注释
if match('^#.*', line):
break
if line.find('#') > 0:
line = line[:line.find('#')].strip()
if line.startswith('0.0.0.0') or line.startswith('127.0.0.1'):
row = line.split(' ')
domain = row[-1]
if domain not in {'localhost', 'localhost.localdomain', 'local', '0.0.0.0'}:
block = self.__analysis(domain)
break
raise Exception('"%s": not keep'%(line))
except Exception as e:
logger.error("%s"%(e))
finally:
return block
# 从 filter 规则中找出包含的域名
def __resolveFilterDomain(self, filter) -> Tuple[str, str]:
def match(pattern, string) -> bool:
return True if re.match(pattern, string) else False
domain = None
try:
domain_tmp = None
while True:
'''
# for test
if filter == "@@|https://media.amazon.map.fastly.net^$script":
print(filter)
'''
if filter.startswith('#%#var'):
break
if filter.startswith('###'):
break
if filter.startswith('##') and filter.find('://') < 0:
break
if match('^/.*/$', filter):
break
if match('^\|\|.*\*.*\^$', filter):
break
# ||example.org^$option
# @@||example.org^$option
if match('^\|\|.*\^\$.*', filter) or match('^@@\|\|.*\^\$.*', filter):
for opt in self.options:
if match('^\|\|.*\^\$%s'%(opt), filter):
domain_tmp = filter[len('||'):filter.find('^$%s'%(opt))]
break
if match('^@@\|\|.*\^\$%s'%(opt), filter):
domain_tmp = filter[len('@@||'):filter.find('^$%s'%(opt))]
break
break
# ||example.org
if match('^\|\|.*', filter):
domain_tmp = filter[len('||'):]
if domain_tmp.find('/') > 0:
domain_tmp = domain_tmp[:domain_tmp.find('/')]
if domain_tmp.find('$') > 0:
domain_tmp = domain_tmp[:domain_tmp.find('$')]
if domain_tmp.find('^*') > 0:
domain_tmp = domain_tmp[:domain_tmp.find('^*')]
if domain_tmp.find('*') > 0:
domain_tmp = domain_tmp[:domain_tmp.find('*')]
break
# @@||example.org
if match('^@@\|\|.*', filter):
domain_tmp = filter[len('@@||'):]
if domain_tmp.find('/') > 0:
domain_tmp = domain_tmp[:domain_tmp.find('/')]
if domain_tmp.find('$') > 0:
domain_tmp = domain_tmp[:domain_tmp.find('$')]
if domain_tmp.find('^*') > 0:
domain_tmp = domain_tmp[:domain_tmp.find('^*')]
if domain_tmp.find('*') > 0:
domain_tmp = domain_tmp[:domain_tmp.find('*')]
break
# ip$network
if match('.*\$network$', filter):
domain_tmp = filter[:-len('$network')]
if domain_tmp.startswith('@@'):
domain_tmp = domain_tmp[2:]
break
# example.org^
if match('.*\^$', filter):
domain_tmp = filter[:-1]
break
# ##
# example.com##selector
# ~example.com##selector
# example.com,example.edu##selector
# example.com,~mail.example.com##selector
connector = '##'
if match('.*%s.*'%(connector), filter) and not filter.startswith(connector) and not filter.endswith(connector):
domain_tmp = filter[ : filter.find(connector)]
if domain_tmp.find(',') > 0:
domain_tmp = None
break
# #?#
# example.com#?#selector
# ~example.com#?#selector
# example.com,example.edu#?#selector
# example.com,~mail.example.com#?#selector
connector = '#\?#'
if match('.*%s.*'%(connector), filter) and not filter.startswith(connector) and not filter.endswith(connector):
domain_tmp = filter[ : filter.find('#?#')] # 需去掉转义符'#\?#' -> '#?#'
if domain_tmp.find(',') > 0:
domain_tmp = None
break
# #@#
# example.com#@#selector
# ~example.com#@#selector
# example.com,example.edu#@#selector
# example.com,~mail.example.com#@#selector
connector = '#@#'
if match('.*%s.*'%(connector), filter) and not filter.startswith(connector) and not filter.endswith(connector):
domain_tmp = filter[ : filter.find(connector)]
if domain_tmp.find(',') > 0:
domain_tmp = None
break
# #$#
# example.com#$#selector
# ~example.com#$#selector
# example.com,example.edu#$#selector
# example.com,~mail.example.com#$#selector
connector = '#\$#'
if match('.*%s.*'%(connector), filter) and not filter.startswith(connector) and not filter.endswith(connector):
domain_tmp = filter[ : filter.find('#$#')] # 需去掉转义符'#\$#' -> '#$#'
if domain_tmp.find(',') > 0:
domain_tmp = None
break
# #%#
# example.com#%#selector
# ~example.com#%#selector
# example.com,example.edu#%#selector
# example.com,~mail.example.com#%#selector
connector = '#%#'
if match('.*%s.*'%(connector), filter) and not filter.startswith(connector) and not filter.endswith(connector):
domain_tmp = filter[ : filter.find(connector)]
if domain_tmp.find(',') > 0:
domain_tmp = None
break
# a[href^="http://sarcasmadvisor.com/"]
if match('.*http:\/\/.*', filter):
domain_tmp = filter[filter.find('http://') + len('http://'):]
if domain_tmp.startswith('*.'):
domain_tmp = domain_tmp[2:]
if domain_tmp.find("'") > 0:
domain_tmp = domain_tmp[:domain_tmp.find("'")]
if domain_tmp.find("^") > 0:
domain_tmp = domain_tmp[:domain_tmp.find("^")]
if domain_tmp.find('$') > 0:
domain_tmp = domain_tmp[:domain_tmp.find('$')]
if domain_tmp.find(',') > 0:
domain_tmp = None
break
# a[href^="https://sarcasmadvisor.com/"]
if match('.*https:\/\/.*', filter):
domain_tmp = filter[filter.find('https://') + len('https://'):]
if domain_tmp.startswith('*.'):
domain_tmp = domain_tmp[2:]
if domain_tmp.find("'") > 0:
domain_tmp = domain_tmp[:domain_tmp.find("'")]
if domain_tmp.find("^") > 0:
domain_tmp = domain_tmp[:domain_tmp.find("^")]
if domain_tmp.find('$') > 0:
domain_tmp = domain_tmp[:domain_tmp.find('$')]
if domain_tmp.find(',') > 0:
domain_tmp = None
break
# 其它规则
raise Exception('"%s": can not resolve domain or ip'%(filter))
if domain_tmp:
if domain_tmp.find('"') > 0:
domain_tmp = domain_tmp[:domain_tmp.find('"')]
if domain_tmp.find('^') > 0:
domain_tmp = domain_tmp[:domain_tmp.find('^')]
if domain_tmp.startswith('*.') > 0:
domain_tmp = domain_tmp[len('*.'):]
if domain_tmp.startswith('~') or domain_tmp.startswith('/') or domain_tmp.startswith('.'):
domain_tmp = domain_tmp[1:]
if domain_tmp.find('/') > 0:
domain_tmp = domain_tmp[:domain_tmp.find('/')]
if len(domain_tmp) < 4 or domain_tmp.find('.') < 0 or domain_tmp.find('*') >= 0 or domain_tmp[-1]=='.' or domain_tmp.startswith('-'):
raise Exception('"%s": not include domain or ip'%(filter))
try:
fld, subdomain = self.__analysis(domain_tmp)
if len(subdomain) > 0:
domain = "%s.%s"%(subdomain,fld)
else:
domain = "%s"%(fld)
except Exception as e:
raise Exception('"%s": not include domain or ip'%(filter))
except Exception as e:
logger.error("%s"%(e))
finally:
return filter,domain
# dns 模式
def __resolveDNS(self, line) -> Tuple[Tuple[str],Tuple[str],Tuple[str]]:
def match(pattern, string):
return True if re.match(pattern, string) else False
try:
block,unblock,filter=None,None,None
while True:
# !* 注释
if match('^!.*', line):
break
# [*] 注释
if match('^\[.*\]$', line):
break
# #* 注释
if match('^#.*', line):
break
# 干掉注释
if line.find('#') > 0:
line = line[:line.find('#')].strip()
# ||example.org^
if match('^\|\|.*\^$', line):
domain = line[2:-1]
if domain.find('*') >= 0:
if domain.startswith('*.') and domain[2:].find('*')<0:
domain = domain[2:]
block = self.__analysis(domain)
break
filter = line
break
block = self.__analysis(domain)
break
# @@||example.org^
if match('^@@\|\|.*\^$', line):
domain = line[4:-1]
unblock = self.__analysis(domain)
break
# /REGEX/
if match('^/.*/$', line):
filter = line
break
# ||example. or ||example.org^$ctag=device_tv
if match('^\|\|.*', line):
filter = line
break
# other
raise Exception('"%s": not keep'%(line))
if filter:
filter = self.__resolveFilterDomain(filter)
except Exception as e:
logger.error("%s"%(e))
finally:
return block,unblock,filter
# filter 模式
def __resolveFilter(self, line) -> Tuple[Tuple[str],Tuple[str],Tuple[str]]:
def match(pattern, string):
return True if re.match(pattern, string) else False
try:
block,unblock,filter=None,None,None
while True:
# !* 注释
if match('^!.*', line):
break
# [*] 注释
if match('^\[.*\]$', line):
break
# ## or ###
if match('^##.*', line):
filter = line
break
# #%#
if match('^#%#.*', line):
filter = line
break
# #* 注释
if match('^#.*', line):
break
# 干掉注释
#if line.find(' #') > 0:
# line = line[:line.find(' #')].strip()
# ||example.org^: block access to the example.org domain and all its subdomains, like www.example.org.
if match('^\|\|.*\^$', line):
domain = line[2:-1]
if domain.find('/') >= 0:
filter = line
break
if domain.find('*') >= 0:
if domain.startswith('*.') and domain[2:].find('*')<0:
domain = domain[2:]
block = self.__analysis(domain)
break
else:
filter = line
break
block = self.__analysis(domain)
break
# @@||example.org^: unblock access to the example.org domain and all its subdomains.
if match('^@@\|\|.*\^$', line):
domain = line[4:-1]
if domain.find('*') >= 0 or domain.find('/') >= 0:
filter = line
break
unblock = self.__analysis(domain)
break
# @@||example.org^|: unblock access to the example.org domain and all its subdomains.
if match('^@@\|\|.*\^\|$', line):
domain = line[4:-2]
if domain.find('*') >= 0 or domain.find('/') >= 0:
filter = line
break
unblock = self.__analysis(domain)
break
# /REGEX/: block access to the domains matching the specified regular expression
if match('^/.*/$', line):
filter = line
break
# 判断是否为单纯的域名
if line.find('.')>0 and not line.startswith('*.') and not line.startswith('-') and line.find('=')<0 and line.find(':')<0 and line.find('*')<0 and line.find('_')<0 and line.find('?')<0 and line.find(';')<0 and line.find('|')<0 and line.find('$')<0 and line.find('#')<0 and line.find('/')<0 and line.find('%')<0 and line.find('^') < 0:
domain = line
block = self.__analysis(domain)
break
# other
filter = line
break
if filter:
filter = self.__resolveFilterDomain(filter)
except Exception as e:
logger.error("%s"%(e))
finally:
return block,unblock,filter
def resolveHost(self, rule:Rule) -> Tuple[Dict[str,Set[str]],Dict[str,Set[str]],Dict[str,str]]:
blockDict:Dict[str,Set[str]] = dict()
unblockDict:Dict[str,Set[str]] = dict()
filterDict:Dict[str,str] = dict()
filename = self.path + '/' + rule.filename
if not os.path.exists(filename):
return blockDict,unblockDict,filterDict
with open(filename, "r") as f:
for line in f:
# 去掉换行符
line = line.replace('\r', '').replace('\n', '').strip()
# 去掉空行
if len(line) < 1:
continue
block = self.__resolveHost(line)
if block:
if block[0] not in blockDict:
blockDict[block[0]] = {block[1],}
else:
blockDict[block[0]].add(block[1])
logger.info("%s: block=%d, unblock=%d, filter=%d"%(rule.name,len(blockDict),len(unblockDict),len(filterDict)))
return blockDict,unblockDict,filterDict
def resolveDNS(self, rule:Rule) -> Tuple[Dict[str,Set[str]],Dict[str,Set[str]],Dict[str,str]]:
blockDict:Dict[str,Set[str]] = dict()
unblockDict:Dict[str,Set[str]] = dict()
filterDict:Dict[str,str] = dict()
filename = self.path + '/' + rule.filename
if not os.path.exists(filename):
return blockDict,unblockDict,filterDict
with open(filename, "r") as f:
for line in f:
# 去掉换行符
line = line.replace('\r', '').replace('\n', '').strip()
# 去掉空行
if len(line) < 1:
continue
block,unblock,filter = self.__resolveDNS(line)
if block:
if block[0] not in blockDict:
blockDict[block[0]] = {block[1],}
else:
blockDict[block[0]].add(block[1])
if unblock:
if unblock[0] not in unblockDict:
unblockDict[unblock[0]] = {unblock[1],}
else:
unblockDict[unblock[0]].add(unblock[1])
if filter:
filterDict[filter[0]] = filter[1]
logger.info("%s: block=%d, unblock=%d, filter=%d"%(rule.name,len(blockDict),len(unblockDict),len(filterDict)))
return blockDict,unblockDict,filterDict
def resolveFilter(self, rule:Rule) -> Tuple[Dict[str,Set[str]],Dict[str,Set[str]],Dict[str,str]]:
blockDict:Dict[str,Set[str]] = dict()
unblockDict:Dict[str,Set[str]] = dict()
filterDict:Dict[str,str] = dict()
filename = self.path + '/' + rule.filename
if not os.path.exists(filename):
return blockDict,unblockDict,filterDict
# 检测文件编码
with open(filename, 'rb') as file:
raw_data = file.read()
detected = chardet.detect(raw_data)
encoding = detected['encoding']
logger.info(f"Detected encoding for {filename}: {encoding}")
try:
with open(filename, "r", encoding=encoding) as f:
for line in f:
# 去掉换行符
line = line.replace('\r', '').replace('\n', '').strip()
# 去掉空行
if len(line) < 1:
continue
block,unblock,filter = self.__resolveFilter(line)
if block:
if block[0] not in blockDict:
blockDict[block[0]] = {block[1],}
else:
blockDict[block[0]].add(block[1])
if unblock:
if unblock[0] not in unblockDict:
unblockDict[unblock[0]] = {unblock[1],}
else:
unblockDict[unblock[0]].add(unblock[1])
if filter:
filterDict[filter[0]] = filter[1]
except UnicodeDecodeError as e:
logger.error(f"Failed to decode {filename} with detected encoding {encoding}: {str(e)}")
return blockDict,unblockDict,filterDict
logger.info("%s: block=%d, unblock=%d, filter=%d"%(rule.name,len(blockDict),len(unblockDict),len(filterDict)))
return blockDict,unblockDict,filterDict