sqlmap/lib/request/connect.py
2011-05-22 10:59:56 +00:00

609 lines
24 KiB
Python

#!/usr/bin/env python
"""
$Id$
Copyright (c) 2006-2011 sqlmap developers (http://sqlmap.sourceforge.net/)
See the file 'doc/COPYING' for copying permission
"""
import httplib
import logging
import re
import socket
import time
import urllib2
import urlparse
import traceback
from extra.multipart import multipartpost
from lib.core.agent import agent
from lib.core.common import average
from lib.core.common import calculateDeltaSeconds
from lib.core.common import clearConsoleLine
from lib.core.common import cpuThrottle
from lib.core.common import extractRegexResult
from lib.core.common import getCurrentThreadData
from lib.core.common import getFilteredPageContent
from lib.core.common import getUnicode
from lib.core.common import logHTTPTraffic
from lib.core.common import parseTargetUrl
from lib.core.common import readInput
from lib.core.common import removeReflectiveValues
from lib.core.common import singleTimeLogMessage
from lib.core.common import stdev
from lib.core.common import urlEncodeCookieValues
from lib.core.common import wasLastRequestDelayed
from lib.core.convert import unicodeencode
from lib.core.convert import urlencode
from lib.core.data import conf
from lib.core.data import kb
from lib.core.data import logger
from lib.core.enums import HTTPHEADER
from lib.core.enums import HTTPMETHOD
from lib.core.enums import NULLCONNECTION
from lib.core.enums import PLACE
from lib.core.enums import WARNFLAGS
from lib.core.exception import sqlmapConnectionException
from lib.core.exception import sqlmapSyntaxException
from lib.core.settings import HTTP_SILENT_TIMEOUT
from lib.core.settings import META_REFRESH_REGEX
from lib.core.settings import IS_WIN
from lib.core.settings import MIN_TIME_RESPONSES
from lib.core.settings import WARN_TIME_STDEV
from lib.core.settings import URI_HTTP_HEADER
from lib.core.threads import getCurrentThreadData
from lib.request.basic import decodePage
from lib.request.basic import forgeHeaders
from lib.request.basic import processResponse
from lib.request.direct import direct
from lib.request.comparison import comparison
from lib.request.methodrequest import MethodRequest
from lib.utils.checkpayload import checkPayload
class Connect:
"""
This class defines methods used to perform HTTP requests
"""
@staticmethod
def __getPageProxy(**kwargs):
return Connect.getPage(**kwargs)
@staticmethod
def getPage(**kwargs):
"""
This method connects to the target url or proxy and returns
the target url page content
"""
if conf.delay is not None and isinstance(conf.delay, (int, float)) and conf.delay > 0:
time.sleep(conf.delay)
elif conf.cpuThrottle:
cpuThrottle(conf.cpuThrottle)
threadData = getCurrentThreadData()
threadData.lastRequestUID += 1
url = kwargs.get('url', conf.url)
get = kwargs.get('get', None)
post = kwargs.get('post', None)
method = kwargs.get('method', None)
cookie = kwargs.get('cookie', None)
ua = kwargs.get('ua', None)
host = kwargs.get('host', None)
referer = kwargs.get('referer', None)
direct = kwargs.get('direct', False)
multipart = kwargs.get('multipart', False)
silent = kwargs.get('silent', False)
raise404 = kwargs.get('raise404', True)
auxHeaders = kwargs.get('auxHeaders', None)
response = kwargs.get('response', False)
ignoreTimeout = kwargs.get('ignoreTimeout', kb.ignoreTimeout)
refreshing = kwargs.get('refreshing', False)
retrying = kwargs.get('retrying', False)
# flag to know if we are dealing with the same target host
target = reduce(lambda x, y: x == y, map(lambda x: urlparse.urlparse(x).netloc.split(':')[0], [url, conf.url]))
if not retrying:
# Reset the number of connection retries
threadData.retriesCount = 0
# fix for known issue when urllib2 just skips the other part of provided
# url splitted with space char while urlencoding it in the later phase
url = url.replace(" ", "%20")
page = ""
cookieStr = ""
requestMsg = "HTTP request [#%d]:\n%s " % (threadData.lastRequestUID, method or conf.method)
requestMsg += "%s" % urlparse.urlsplit(url)[2] or "/"
responseMsg = "HTTP response "
requestHeaders = ""
responseHeaders = None
logHeaders = ""
# fix for known issues when using url in unicode format
# (e.g. UnicodeDecodeError: "url = url + '?' + query" in redirect case)
url = unicodeencode(url)
try:
if silent:
socket.setdefaulttimeout(HTTP_SILENT_TIMEOUT)
if direct:
if "?" in url:
url, params = url.split("?")
params = urlencode(params)
url = "%s?%s" % (url, params)
requestMsg += "?%s" % params
elif multipart:
# Needed in this form because of potential circle dependency
# problem (option -> update -> connect -> option)
from lib.core.option import proxyHandler
multipartOpener = urllib2.build_opener(proxyHandler, multipartpost.MultipartPostHandler)
conn = multipartOpener.open(unicodeencode(url), multipart)
page = conn.read()
responseHeaders = conn.info()
responseHeaders[URI_HTTP_HEADER] = conn.geturl()
page = decodePage(page, responseHeaders.get(HTTPHEADER.CONTENT_ENCODING), responseHeaders.get(HTTPHEADER.CONTENT_TYPE))
return page
elif refreshing:
# Reference(s):
# http://vancouver-webpages.com/META/metatags.detail.html
# http://webdesign.about.com/od/metataglibraries/a/aa080300a.htm
get = None
post = None
elif target:
if conf.parameters.has_key(PLACE.GET) and not get:
get = conf.parameters[PLACE.GET]
if get:
url = "%s?%s" % (url, get)
requestMsg += "?%s" % get
if conf.method == HTTPMETHOD.POST and not post:
for place in (PLACE.POST, PLACE.SOAP):
if conf.parameters.has_key(place):
post = conf.parameters[place]
break
elif get:
url = "%s?%s" % (url, get)
requestMsg += "?%s" % get
requestMsg += " %s" % httplib.HTTPConnection._http_vsn_str
# Perform HTTP request
headers = forgeHeaders(cookie, ua, referer)
if conf.realTest:
headers[HTTPHEADER.REFERER] = "%s://%s" % (conf.scheme, conf.hostname)
if kb.authHeader:
headers[HTTPHEADER.AUTHORIZATION] = kb.authHeader
if kb.proxyAuthHeader:
headers[HTTPHEADER.PROXY_AUTHORIZATION] = kb.proxyAuthHeader
headers[HTTPHEADER.HOST] = host or urlparse.urlparse(url).netloc.split(':')[0]
if auxHeaders:
for key, item in auxHeaders.items():
headers[key] = item
for key, item in headers.items():
del headers[key]
headers[unicodeencode(key, kb.pageEncoding)] = unicodeencode(item, kb.pageEncoding)
post = unicodeencode(post, kb.pageEncoding)
if method:
req = MethodRequest(url, post, headers)
req.set_method(method)
else:
req = urllib2.Request(url, post, headers)
if not conf.dropSetCookie and conf.cj:
for _, cookie in enumerate(conf.cj):
if not cookieStr:
cookieStr = "Cookie: "
cookie = getUnicode(cookie)
index = cookie.index(" for ")
cookieStr += "%s; " % cookie[8:index]
if not req.has_header(HTTPHEADER.ACCEPT_ENCODING):
requestHeaders += "%s: identity\n" % HTTPHEADER.ACCEPT_ENCODING
requestHeaders += "\n".join(["%s: %s" % (header, value) for header, value in req.header_items()])
if not req.has_header(HTTPHEADER.COOKIE) and cookieStr:
requestHeaders += "\n%s" % cookieStr[:-2]
if not req.has_header(HTTPHEADER.CONNECTION):
requestHeaders += "\n%s: close" % HTTPHEADER.CONNECTION
requestMsg += "\n%s" % requestHeaders
if post:
requestMsg += "\n\n%s" % post
requestMsg += "\n"
logger.log(8, requestMsg)
conn = urllib2.urlopen(req)
if not kb.authHeader and req.has_header(HTTPHEADER.AUTHORIZATION):
kb.authHeader = req.get_header(HTTPHEADER.AUTHORIZATION)
if not kb.proxyAuthHeader and req.has_header(HTTPHEADER.PROXY_AUTHORIZATION):
kb.proxyAuthHeader = req.get_header(HTTPHEADER.PROXY_AUTHORIZATION)
if hasattr(conn, "setcookie"):
kb.redirectSetCookie = conn.setcookie
if hasattr(conn, "redurl") and hasattr(conn, "redcode") and target and not conf.redirectHandled and not conf.realTest:
msg = "sqlmap got a %d redirect to " % conn.redcode
msg += "%s - What target address do you " % conn.redurl
msg += "want to use from now on? %s " % conf.url
msg += "(default) or provide another target address based "
msg += "also on the redirection got from the application\n"
while True:
choice = readInput(msg, default=None)
if not choice:
pass
else:
conf.url = choice
try:
parseTargetUrl()
return Connect.__getPageProxy(**kwargs)
except sqlmapSyntaxException:
continue
break
conf.redirectHandled = True
# Return response object
if response:
return conn, None
# Get HTTP response
page = conn.read()
code = conn.code
responseHeaders = conn.info()
responseHeaders[URI_HTTP_HEADER] = conn.geturl()
page = decodePage(page, responseHeaders.get(HTTPHEADER.CONTENT_ENCODING), responseHeaders.get(HTTPHEADER.CONTENT_TYPE))
status = getUnicode(conn.msg)
if extractRegexResult(META_REFRESH_REGEX, page, re.DOTALL | re.IGNORECASE) and not refreshing:
url = extractRegexResult(META_REFRESH_REGEX, page, re.DOTALL | re.IGNORECASE)
if url.lower().startswith('http://'):
kwargs['url'] = url
else:
kwargs['url'] = conf.url[:conf.url.rfind('/')+1] + url
threadData.lastRedirectMsg = (threadData.lastRequestUID, page)
kwargs['refreshing'] = True
debugMsg = "got HTML meta refresh header"
logger.debug(debugMsg)
try:
return Connect.__getPageProxy(**kwargs)
except sqlmapSyntaxException:
pass
# Explicit closing of connection object
if not conf.keepAlive:
try:
conn.fp._sock.close()
conn.close()
except Exception, msg:
warnMsg = "problem occured during connection closing ('%s')" % msg
logger.warn(warnMsg)
except urllib2.HTTPError, e:
page = None
responseHeaders = None
try:
page = e.read()
responseHeaders = e.info()
responseHeaders[URI_HTTP_HEADER] = e.geturl()
page = decodePage(page, responseHeaders.get(HTTPHEADER.CONTENT_ENCODING), responseHeaders.get(HTTPHEADER.CONTENT_TYPE))
except socket.timeout:
warnMsg = "connection timed out while trying "
warnMsg += "to get error page information (%d)" % e.code
logger.warn(warnMsg)
return None, None
except:
pass
code = e.code
threadData.lastHTTPError = (threadData.lastRequestUID, code)
if code not in kb.httpErrorCodes:
kb.httpErrorCodes[code] = 0
kb.httpErrorCodes[code] += 1
status = getUnicode(e.msg)
responseMsg += "[#%d] (%d %s):\n" % (threadData.lastRequestUID, code, status)
if responseHeaders:
logHeaders = "\n".join(["%s: %s" % (key.capitalize() if isinstance(key, basestring) else key, getUnicode(value)) for (key, value) in responseHeaders.items()])
logHTTPTraffic(requestMsg, "%s%s\n\n%s" % (responseMsg, logHeaders, page if isinstance(page, unicode) else getUnicode(page)))
if conf.verbose <= 5:
responseMsg += getUnicode(logHeaders)
elif conf.verbose > 5:
responseMsg += "%s\n\n%s\n" % (logHeaders, page)
logger.log(7, responseMsg)
if e.code == 401:
errMsg = "not authorized, try to provide right HTTP "
errMsg += "authentication type and valid credentials (%d)" % code
raise sqlmapConnectionException, errMsg
elif e.code == 404 and raise404:
errMsg = "page not found (%d)" % code
raise sqlmapConnectionException, errMsg
else:
debugMsg = "got HTTP error code: %d (%s)" % (code, status)
logger.debug(debugMsg)
page = processResponse(page, responseHeaders)
return page, responseHeaders
except (urllib2.URLError, socket.error, socket.timeout, httplib.BadStatusLine, httplib.IncompleteRead), e:
tbMsg = traceback.format_exc()
if "no host given" in tbMsg:
warnMsg = "invalid url address used (%s)" % repr(url)
raise sqlmapSyntaxException, warnMsg
elif "forcibly closed" in tbMsg:
warnMsg = "connection was forcibly closed by the target url"
elif "timed out" in tbMsg:
warnMsg = "connection timed out to the target url"
elif "URLError" in tbMsg or "error" in tbMsg:
warnMsg = "unable to connect to the target url"
elif "BadStatusLine" in tbMsg:
warnMsg = "the target url responded with an unknown HTTP "
warnMsg += "status code, try to force the HTTP User-Agent "
warnMsg += "header with option --user-agent or --random-agent"
elif "IncompleteRead" in tbMsg:
warnMsg = "there was an incomplete read error while retrieving data "
warnMsg += "from the target url"
else:
warnMsg = "unable to connect to the target url"
if "BadStatusLine" not in tbMsg:
warnMsg += " or proxy"
if "forcibly closed" in tbMsg:
logger.critical(warnMsg)
return None, None
elif silent or (ignoreTimeout and any(map(lambda x: x in tbMsg, ["timed out", "IncompleteRead"]))):
return None, None
elif threadData.retriesCount < conf.retries and not kb.threadException and not conf.realTest:
threadData.retriesCount += 1
warnMsg += ", sqlmap is going to retry the request"
logger.critical(warnMsg)
if kb.originalPage is None:
if conf.tor:
warnMsg = "please make sure that you have "
warnMsg += "Tor installed and running for "
warnMsg += "you to be able to successfully use "
warnMsg += "--tor switch "
if IS_WIN:
warnMsg += "(e.g. https://www.torproject.org/download/download.html.en)"
else:
warnMsg += "(e.g. https://help.ubuntu.com/community/Tor)"
singleTimeLogMessage(warnMsg, logging.WARN, WARNFLAGS.TOR)
else:
warnMsg = "if the problem persists please try to rerun "
warnMsg += "with the --random-agent switch turned on "
warnMsg += "and/or try to use proxy switches (--ignore-proxy, --proxy,...)"
singleTimeLogMessage(warnMsg, logging.WARN, WARNFLAGS.RANDOM_AGENT)
elif conf.threads > 1:
warnMsg = "if the problem persists please try to lower "
warnMsg += "the number of used threads (--threads)"
singleTimeLogMessage(warnMsg, logging.WARN, WARNFLAGS.THREADS)
time.sleep(1)
socket.setdefaulttimeout(conf.timeout)
kwargs['retrying'] = True
return Connect.__getPageProxy(**kwargs)
elif kb.testMode:
logger.critical(warnMsg)
return None, None
else:
socket.setdefaulttimeout(conf.timeout)
raise sqlmapConnectionException, warnMsg
socket.setdefaulttimeout(conf.timeout)
page = processResponse(page, responseHeaders)
responseMsg += "[#%d] (%d %s):\n" % (threadData.lastRequestUID, code, status)
if responseHeaders:
logHeaders = "\n".join(["%s: %s" % (key.capitalize() if isinstance(key, basestring) else key, getUnicode(value)) for (key, value) in responseHeaders.items()])
logHTTPTraffic(requestMsg, "%s%s\n\n%s" % (responseMsg, logHeaders, page if isinstance(page, unicode) else getUnicode(page)))
if conf.verbose <= 5:
responseMsg += getUnicode(logHeaders)
elif conf.verbose > 5:
responseMsg += "%s\n\n%s\n" % (logHeaders, page)
logger.log(7, responseMsg)
return page, responseHeaders
@staticmethod
def queryPage(value=None, place=None, content=False, getRatioValue=False, silent=False, method=None, timeBasedCompare=False, noteResponseTime=True, auxHeaders=None, response=False, raise404=None):
"""
This method calls a function to get the target url page content
and returns its page MD5 hash or a boolean value in case of
string match check ('--string' command line parameter)
"""
if conf.direct:
return direct(value, content)
get = None
post = None
cookie = None
ua = None
referer = None
page = None
pageLength = None
uri = None
raise404 = place != PLACE.URI if raise404 is None else raise404
if not place:
place = kb.injection.place
payload = agent.extractPayload(value)
threadData = getCurrentThreadData()
if payload:
if kb.tamperFunctions:
for function in kb.tamperFunctions:
payload = function(payload)
value = agent.replacePayload(value, payload)
logger.log(9, payload)
if place == PLACE.COOKIE and conf.cookieUrlencode:
value = agent.removePayloadDelimiters(value)
value = urlEncodeCookieValues(value)
elif place:
if place in (PLACE.GET, PLACE.POST):
# payloads in GET and/or POST need to be urlencoded
# throughly without safe chars (especially & and =)
# addendum: as we support url encoding in tampering
# functions therefore we need to use % as a safe char
payload = urlencode(payload, "%", False, True)
value = agent.replacePayload(value, payload)
elif place == PLACE.SOAP:
# payloads in SOAP should have chars > and < replaced
# with their HTML encoded counterparts
payload = payload.replace('>', '&gt;').replace('<', '&lt;')
value = agent.replacePayload(value, payload)
value = agent.removePayloadDelimiters(value)
if conf.checkPayload:
checkPayload(value)
if PLACE.GET in conf.parameters:
get = urlencode(conf.parameters[PLACE.GET] if place != PLACE.GET or not value else value, limit=True)
if PLACE.POST in conf.parameters:
post = urlencode(conf.parameters[PLACE.POST] if place != PLACE.POST or not value else value)
if PLACE.SOAP in conf.parameters:
post = conf.parameters[PLACE.SOAP] if place != PLACE.SOAP or not value else value
if PLACE.COOKIE in conf.parameters:
cookie = conf.parameters[PLACE.COOKIE] if place != PLACE.COOKIE or not value else value
if PLACE.UA in conf.parameters:
ua = conf.parameters[PLACE.UA] if place != PLACE.UA or not value else value
if PLACE.REFERER in conf.parameters:
referer = conf.parameters[PLACE.REFERER] if place != PLACE.REFERER or not value else value
if PLACE.URI in conf.parameters:
uri = conf.url if place != PLACE.URI or not value else value
else:
uri = conf.url
if timeBasedCompare:
if len(kb.responseTimes) < MIN_TIME_RESPONSES:
clearConsoleLine()
warnMsg = "time-based comparison needs larger statistical "
warnMsg += "model. Making a few dummy requests, please wait.."
logger.warn(warnMsg)
while len(kb.responseTimes) < MIN_TIME_RESPONSES:
Connect.queryPage(content=True)
if stdev(kb.responseTimes) > WARN_TIME_STDEV:
kb.adjustTimeDelay = False
warnMsg = "there is considerable lagging in connection "
warnMsg += "response(s). Please use as high value for "
warnMsg += "--time-sec option as possible (e.g. 10 or more)"
logger.critical(warnMsg)
if conf.safUrl and conf.saFreq > 0:
kb.queryCounter += 1
if kb.queryCounter % conf.saFreq == 0:
Connect.getPage(url=conf.safUrl, cookie=cookie, direct=True, silent=True, ua=ua, referer=referer)
start = time.time()
if kb.nullConnection and not content and not response and not timeBasedCompare:
if kb.nullConnection == NULLCONNECTION.HEAD:
method = HTTPMETHOD.HEAD
elif kb.nullConnection == NULLCONNECTION.RANGE:
if not auxHeaders:
auxHeaders = {}
auxHeaders[HTTPHEADER.RANGE] = "bytes=-1"
_, headers = Connect.getPage(url=uri, get=get, post=post, cookie=cookie, ua=ua, referer=referer, silent=silent, method=method, auxHeaders=auxHeaders, raise404=raise404)
if kb.nullConnection == NULLCONNECTION.HEAD and HTTPHEADER.CONTENT_LENGTH in headers:
pageLength = int(headers[HTTPHEADER.CONTENT_LENGTH])
elif kb.nullConnection == NULLCONNECTION.RANGE and HTTPHEADER.CONTENT_RANGE in headers:
pageLength = int(headers[HTTPHEADER.CONTENT_RANGE][headers[HTTPHEADER.CONTENT_RANGE].find('/') + 1:])
if not pageLength:
page, headers = Connect.getPage(url=uri, get=get, post=post, cookie=cookie, ua=ua, referer=referer, silent=silent, method=method, auxHeaders=auxHeaders, response=response, raise404=raise404, ignoreTimeout=timeBasedCompare)
threadData.lastQueryDuration = calculateDeltaSeconds(start)
if kb.testMode:
kb.testQueryCount += 1
if conf.cj:
conf.cj.clear()
if timeBasedCompare:
return wasLastRequestDelayed()
elif noteResponseTime:
kb.responseTimes.append(threadData.lastQueryDuration)
if content or response:
return page, headers
page = removeReflectiveValues(page, payload)
if getRatioValue:
return comparison(page, getRatioValue=False, pageLength=pageLength), comparison(page, getRatioValue=True, pageLength=pageLength)
elif pageLength or page:
return comparison(page, getRatioValue, pageLength)
else:
return False