mirror of
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229 lines
8.3 KiB
Python
229 lines
8.3 KiB
Python
#!/usr/bin/env python
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"""
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$Id$
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Copyright (c) 2006-2012 sqlmap developers (http://www.sqlmap.org/)
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See the file 'doc/COPYING' for copying permission
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"""
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import codecs
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import gzip
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import logging
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import re
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import StringIO
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import zlib
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from extra.chardet import detect
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from lib.core.common import extractErrorMessage
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from lib.core.common import extractRegexResult
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from lib.core.common import getUnicode
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from lib.core.common import readInput
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from lib.core.common import resetCookieJar
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from lib.core.common import singleTimeLogMessage
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from lib.core.data import conf
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from lib.core.data import kb
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from lib.core.data import logger
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from lib.core.enums import HTTPHEADER
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from lib.core.enums import PLACE
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from lib.core.settings import DEFAULT_COOKIE_DELIMITER
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from lib.core.settings import ML
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from lib.core.settings import META_CHARSET_REGEX
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from lib.core.settings import PARSE_HEADERS_LIMIT
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from lib.parse.headers import headersParser
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from lib.parse.html import htmlParser
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def forgeHeaders(items=None):
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"""
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Prepare HTTP Cookie, HTTP User-Agent and HTTP Referer headers to use when performing
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the HTTP requests
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"""
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items = items or {}
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for _ in items.keys():
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if items[_] is None:
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del items[_]
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headers = dict(conf.httpHeaders)
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headers.update(items or {})
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if conf.cj:
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if HTTPHEADER.COOKIE in headers:
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for cookie in conf.cj:
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if ("%s=" % cookie.name) in headers[HTTPHEADER.COOKIE]:
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if kb.mergeCookies is None:
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message = "you provided a HTTP %s header value. " % HTTPHEADER.COOKIE
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message += "The target url provided its own cookies within "
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message += "the HTTP %s header which intersect with yours. " % HTTPHEADER.SET_COOKIE
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message += "Do you want to merge them in futher requests? [Y/n] "
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test = readInput(message, default="Y")
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kb.mergeCookies = not test or test[0] in ("y", "Y")
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if kb.mergeCookies:
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_ = lambda x: re.sub("(?i)%s=[^%s]+" % (cookie.name, DEFAULT_COOKIE_DELIMITER), "%s=%s" % (cookie.name, cookie.value), x)
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headers[HTTPHEADER.COOKIE] = _(headers[HTTPHEADER.COOKIE])
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if PLACE.COOKIE in conf.parameters:
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conf.parameters[PLACE.COOKIE] = _(conf.parameters[PLACE.COOKIE])
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conf.httpHeaders = [(item[0], item[1] if item[0] != HTTPHEADER.COOKIE else _(item[1])) for item in conf.httpHeaders]
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elif not kb.testMode:
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headers[HTTPHEADER.COOKIE] += "%s %s=%s" % (DEFAULT_COOKIE_DELIMITER, cookie.name, cookie.value)
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if kb.testMode:
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resetCookieJar(conf.cj)
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if kb.redirectSetCookie and not conf.dropSetCookie:
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if HTTPHEADER.COOKIE in headers:
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headers[HTTPHEADER.COOKIE] += "%s %s" % (DEFAULT_COOKIE_DELIMITER, kb.redirectSetCookie)
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else:
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headers[HTTPHEADER.COOKIE] = kb.redirectSetCookie
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return headers
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def parseResponse(page, headers):
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"""
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@param page: the page to parse to feed the knowledge base htmlFp
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(back-end DBMS fingerprint based upon DBMS error messages return
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through the web application) list and absFilePaths (absolute file
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paths) set.
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"""
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if headers:
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headersParser(headers)
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if page:
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htmlParser(page)
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def checkCharEncoding(encoding):
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if encoding:
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encoding = encoding.lower()
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else:
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return encoding
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# http://www.destructor.de/charsets/index.htm
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translate = { "windows-874": "iso-8859-11", "en_us": "utf8", "macintosh": "iso-8859-1", "euc_tw": "big5_tw", "th": "tis-620", "unicode": "utf8" }
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for delimiter in (';', ',', '('):
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if delimiter in encoding:
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encoding = encoding[:encoding.find(delimiter)].strip()
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# popular typos/errors
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if "8858" in encoding:
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encoding = encoding.replace("8858", "8859") # iso-8858 -> iso-8859
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elif "8559" in encoding:
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encoding = encoding.replace("8559", "8859") # iso-8559 -> iso-8859
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elif "5889" in encoding:
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encoding = encoding.replace("5889", "8859") # iso-5889 -> iso-8859
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elif "2313" in encoding:
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encoding = encoding.replace("2313", "2312") # gb2313 -> gb2312
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elif "x-euc" in encoding:
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encoding = encoding.replace("x-euc", "euc") # x-euc-kr -> euc-kr
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# name adjustment for compatibility
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if encoding.startswith("8859"):
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encoding = "iso-%s" % encoding
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elif encoding.startswith("cp-"):
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encoding = "cp%s" % encoding[3:]
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elif encoding.startswith("euc-"):
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encoding = "euc_%s" % encoding[4:]
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elif encoding.startswith("windows") and not encoding.startswith("windows-"):
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encoding = "windows-%s" % encoding[7:]
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elif encoding.find("iso-88") > 0:
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encoding = encoding[encoding.find("iso-88"):]
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elif encoding.startswith("is0-"):
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encoding = "iso%s" % encoding[4:]
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elif encoding.find("ascii") > 0:
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encoding = "ascii"
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elif encoding.find("utf8") > 0:
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encoding = "utf8"
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# http://philip.html5.org/data/charsets-2.html
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if encoding in translate:
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encoding = translate[encoding]
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elif encoding in ("null", "{charset}", "*"):
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return None
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# http://www.iana.org/assignments/character-sets
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# http://docs.python.org/library/codecs.html
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try:
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codecs.lookup(encoding)
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except LookupError:
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warnMsg = "unknown web page charset '%s'. " % encoding
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warnMsg += "Please report by e-mail to %s." % ML
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singleTimeLogMessage(warnMsg, logging.WARN, encoding)
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encoding = None
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return encoding
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def getHeuristicCharEncoding(page):
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"""
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Returns page encoding charset detected by usage of heuristics
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Reference: http://chardet.feedparser.org/docs/
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"""
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retVal = detect(page)["encoding"]
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infoMsg = "heuristics detected web page charset '%s'" % retVal
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singleTimeLogMessage(infoMsg, logging.INFO, retVal)
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return retVal
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def decodePage(page, contentEncoding, contentType):
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"""
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Decode compressed/charset HTTP response
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"""
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if not page or (conf.nullConnection and len(page) < 2):
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return getUnicode(page)
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if isinstance(contentEncoding, basestring) and contentEncoding.lower() in ("gzip", "x-gzip", "deflate"):
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if contentEncoding == "deflate":
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# http://stackoverflow.com/questions/1089662/python-inflate-and-deflate-implementations
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data = StringIO.StringIO(zlib.decompress(page, -15))
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else:
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data = gzip.GzipFile('', 'rb', 9, StringIO.StringIO(page))
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try:
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page = data.read()
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except Exception, msg:
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errMsg = "detected invalid data for declared content "
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errMsg += "encoding '%s' ('%s')" % (contentEncoding, msg)
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singleTimeLogMessage(errMsg, logging.ERROR)
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if not conf.charset:
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httpCharset, metaCharset = None, None
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# http://stackoverflow.com/questions/1020892/python-urllib2-read-to-unicode
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if contentType and (contentType.find('charset=') != -1):
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httpCharset = checkCharEncoding(contentType.split('charset=')[-1])
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metaCharset = checkCharEncoding(extractRegexResult(META_CHARSET_REGEX, page, re.DOTALL | re.IGNORECASE))
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if ((httpCharset or metaCharset) and not all([httpCharset, metaCharset]))\
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or (httpCharset == metaCharset and all([httpCharset, metaCharset])):
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kb.pageEncoding = httpCharset or metaCharset
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else:
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kb.pageEncoding = None
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else:
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kb.pageEncoding = conf.charset
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if contentType and not isinstance(page, unicode) and any(map(lambda x: x in contentType.lower(), ('text/txt', 'text/raw', 'text/html', 'text/xml'))):
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# can't do for all responses because we need to support binary files too
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kb.pageEncoding = kb.pageEncoding or checkCharEncoding(getHeuristicCharEncoding(page))
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page = getUnicode(page, kb.pageEncoding)
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return page
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def processResponse(page, responseHeaders):
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kb.processResponseCounter += 1
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if not kb.dumpMode:
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parseResponse(page, responseHeaders if kb.processResponseCounter < PARSE_HEADERS_LIMIT else None)
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if conf.parseErrors:
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msg = extractErrorMessage(page)
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if msg:
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logger.info("parsed error message: '%s'" % msg)
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