mirror of
https://github.com/sqlmapproject/sqlmap.git
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183 lines
7.4 KiB
Python
183 lines
7.4 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 io
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import time
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import types
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from lib.core.common import getHostHeader
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from lib.core.common import getSafeExString
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from lib.core.common import logHTTPTraffic
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from lib.core.common import readInput
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from lib.core.convert import getUnicode
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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 CUSTOM_LOGGING
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from lib.core.enums import HTTP_HEADER
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from lib.core.enums import HTTPMETHOD
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from lib.core.enums import REDIRECTION
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from lib.core.exception import SqlmapConnectionException
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from lib.core.settings import DEFAULT_COOKIE_DELIMITER
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from lib.core.settings import MAX_CONNECTION_READ_SIZE
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from lib.core.settings import MAX_CONNECTION_TOTAL_SIZE
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from lib.core.settings import MAX_SINGLE_URL_REDIRECTIONS
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from lib.core.settings import MAX_TOTAL_REDIRECTIONS
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from lib.core.threads import getCurrentThreadData
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from lib.request.basic import decodePage
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from lib.request.basic import parseResponse
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from thirdparty.six.moves import urllib as _urllib
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class SmartRedirectHandler(_urllib.request.HTTPRedirectHandler):
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def _get_header_redirect(self, headers):
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retVal = None
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if headers:
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if HTTP_HEADER.LOCATION in headers:
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retVal = headers[HTTP_HEADER.LOCATION]
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elif HTTP_HEADER.URI in headers:
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retVal = headers[HTTP_HEADER.URI]
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return retVal
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def _ask_redirect_choice(self, redcode, redurl, method):
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with kb.locks.redirect:
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if kb.redirectChoice is None:
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msg = "sqlmap got a %d redirect to " % redcode
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msg += "'%s'. Do you want to follow? [Y/n] " % redurl
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kb.redirectChoice = REDIRECTION.YES if readInput(msg, default='Y', boolean=True) else REDIRECTION.NO
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if kb.redirectChoice == REDIRECTION.YES and method == HTTPMETHOD.POST and kb.resendPostOnRedirect is None:
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msg = "redirect is a result of a "
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msg += "POST request. Do you want to "
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msg += "resend original POST data to a new "
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msg += "location? [%s] " % ("Y/n" if not kb.originalPage else "y/N")
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kb.resendPostOnRedirect = readInput(msg, default=('Y' if not kb.originalPage else 'N'), boolean=True)
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if kb.resendPostOnRedirect:
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self.redirect_request = self._redirect_request
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def _redirect_request(self, req, fp, code, msg, headers, newurl):
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newurl = newurl.replace(' ', '%20')
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return _urllib.request.Request(newurl, data=req.data, headers=req.headers, origin_req_host=req.get_origin_req_host())
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def http_error_302(self, req, fp, code, msg, headers):
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start = time.time()
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content = None
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redurl = self._get_header_redirect(headers) if not conf.ignoreRedirects else None
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try:
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content = fp.read(MAX_CONNECTION_TOTAL_SIZE)
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except Exception as ex:
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dbgMsg = "there was a problem while retrieving "
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dbgMsg += "redirect response content ('%s')" % getSafeExString(ex)
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logger.debug(dbgMsg)
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finally:
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if content:
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try: # try to write it back to the read buffer so we could reuse it in further steps
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fp.fp._rbuf.truncate(0)
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fp.fp._rbuf.write(content)
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except:
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pass
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content = decodePage(content, headers.get(HTTP_HEADER.CONTENT_ENCODING), headers.get(HTTP_HEADER.CONTENT_TYPE))
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threadData = getCurrentThreadData()
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threadData.lastRedirectMsg = (threadData.lastRequestUID, content)
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redirectMsg = "HTTP redirect "
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redirectMsg += "[#%d] (%d %s):\r\n" % (threadData.lastRequestUID, code, getUnicode(msg))
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if headers:
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logHeaders = "\r\n".join("%s: %s" % (getUnicode(key.capitalize() if hasattr(key, "capitalize") else key), getUnicode(value)) for (key, value) in headers.items())
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else:
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logHeaders = ""
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redirectMsg += logHeaders
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if content:
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redirectMsg += "\r\n\r\n%s" % getUnicode(content[:MAX_CONNECTION_READ_SIZE])
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logHTTPTraffic(threadData.lastRequestMsg, redirectMsg, start, time.time())
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logger.log(CUSTOM_LOGGING.TRAFFIC_IN, redirectMsg)
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if redurl:
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try:
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if not _urllib.parse.urlsplit(redurl).netloc:
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redurl = _urllib.parse.urljoin(req.get_full_url(), redurl)
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self._infinite_loop_check(req)
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self._ask_redirect_choice(code, redurl, req.get_method())
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except ValueError:
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redurl = None
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result = fp
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if redurl and kb.redirectChoice == REDIRECTION.YES:
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parseResponse(content, headers)
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req.headers[HTTP_HEADER.HOST] = getHostHeader(redurl)
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if headers and HTTP_HEADER.SET_COOKIE in headers:
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cookies = dict()
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delimiter = conf.cookieDel or DEFAULT_COOKIE_DELIMITER
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last = None
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for part in req.headers.get(HTTP_HEADER.COOKIE, "").split(delimiter) + ([headers[HTTP_HEADER.SET_COOKIE]] if HTTP_HEADER.SET_COOKIE in headers else []):
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if '=' in part:
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part = part.strip()
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key, value = part.split('=', 1)
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cookies[key] = value
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last = key
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elif last:
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cookies[last] += "%s%s" % (delimiter, part)
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req.headers[HTTP_HEADER.COOKIE] = delimiter.join("%s=%s" % (key, cookies[key]) for key in cookies)
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try:
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result = _urllib.request.HTTPRedirectHandler.http_error_302(self, req, fp, code, msg, headers)
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except _urllib.error.HTTPError as ex:
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result = ex
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# Dirty hack for http://bugs.python.org/issue15701
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try:
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result.info()
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except AttributeError:
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def _(self):
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return getattr(self, "hdrs") or {}
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result.info = types.MethodType(_, result)
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if not hasattr(result, "read"):
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def _(self, length=None):
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return ex.msg
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result.read = types.MethodType(_, result)
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if not getattr(result, "url", None):
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result.url = redurl
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if not getattr(result, "code", None):
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result.code = 999
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except:
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redurl = None
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result = fp
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fp.read = io.BytesIO("").read
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else:
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result = fp
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threadData.lastRedirectURL = (threadData.lastRequestUID, redurl)
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result.redcode = code
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result.redurl = redurl
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return result
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http_error_301 = http_error_303 = http_error_307 = http_error_302
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def _infinite_loop_check(self, req):
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if hasattr(req, 'redirect_dict') and (req.redirect_dict.get(req.get_full_url(), 0) >= MAX_SINGLE_URL_REDIRECTIONS or len(req.redirect_dict) >= MAX_TOTAL_REDIRECTIONS):
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errMsg = "infinite redirect loop detected (%s). " % ", ".join(item for item in req.redirect_dict.keys())
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errMsg += "Please check all provided parameters and/or provide missing ones"
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raise SqlmapConnectionException(errMsg)
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