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87 lines
2.4 KiB
Python
87 lines
2.4 KiB
Python
#!/usr/bin/env python
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"""
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Copyright (c) 2006-2019 sqlmap developers (http://sqlmap.org/)
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See the file 'LICENSE' for copying permission
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"""
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import re
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from xml.sax.handler import ContentHandler
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from lib.core.common import urldecode
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from lib.core.common import parseXmlFile
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from lib.core.data import kb
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from lib.core.data import paths
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from lib.core.threads import getCurrentThreadData
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class HTMLHandler(ContentHandler):
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"""
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This class defines methods to parse the input HTML page to
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fingerprint the back-end database management system
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"""
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def __init__(self, page):
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ContentHandler.__init__(self)
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self._dbms = None
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self._page = (page or "")
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self._lower_page = self._page.lower()
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self._urldecoded_page = urldecode(self._page)
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self.dbms = None
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def _markAsErrorPage(self):
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threadData = getCurrentThreadData()
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threadData.lastErrorPage = (threadData.lastRequestUID, self._page)
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def startElement(self, name, attrs):
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if self.dbms:
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return
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if name == "dbms":
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self._dbms = attrs.get("value")
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elif name == "error":
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regexp = attrs.get("regexp")
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if regexp not in kb.cache.regex:
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keywords = re.findall(r"\w+", re.sub(r"\\.", " ", regexp))
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keywords = sorted(keywords, key=len)
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kb.cache.regex[regexp] = keywords[-1].lower()
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if kb.cache.regex[regexp] in self._lower_page and re.search(regexp, self._urldecoded_page, re.I):
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self.dbms = self._dbms
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self._markAsErrorPage()
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def htmlParser(page):
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"""
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This function calls a class that parses the input HTML page to
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fingerprint the back-end database management system
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"""
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xmlfile = paths.ERRORS_XML
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handler = HTMLHandler(page)
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key = hash(page)
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if key in kb.cache.parsedDbms:
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retVal = kb.cache.parsedDbms[key]
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if retVal:
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handler._markAsErrorPage()
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return retVal
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parseXmlFile(xmlfile, handler)
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if handler.dbms and handler.dbms not in kb.htmlFp:
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kb.lastParserStatus = handler.dbms
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kb.htmlFp.append(handler.dbms)
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else:
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kb.lastParserStatus = None
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kb.cache.parsedDbms[key] = handler.dbms
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# generic SQL warning/error messages
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if re.search(r"SQL (warning|error|syntax)", page, re.I):
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handler._markAsErrorPage()
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return handler.dbms
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