sqlmap/lib/request/connect.py
2011-02-19 21:05:15 +00:00

495 lines
19 KiB
Python

#!/usr/bin/env python
"""
$Id$
Copyright (c) 2006-2010 sqlmap developers (http://sqlmap.sourceforge.net/)
See the file 'doc/COPYING' for copying permission
"""
import httplib
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 getCurrentThreadData
from lib.core.common import getFilteredPageContent
from lib.core.common import unicodeToSafeHTMLValue
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 stdev
from lib.core.common import wasLastRequestDelayed
from lib.core.convert import urlencode
from lib.core.common import urlEncodeCookieValues
from lib.core.data import conf
from lib.core.data import kb
from lib.core.data import logger
from lib.core.enums import HTTPMETHOD
from lib.core.enums import NULLCONNECTION
from lib.core.enums import PLACE
from lib.core.exception import sqlmapConnectionException
from lib.core.exception import sqlmapSyntaxException
from lib.core.settings import MIN_TIME_RESPONSES
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:
delay = 0.00001 * (conf.cpuThrottle ** 2)
time.sleep(delay)
threadData = getCurrentThreadData()
threadData.lastRequestUID += 1
url = kwargs.get('url', conf.url).replace(" ", "%20")
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)
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', False)
page = ""
cookieStr = ""
requestMsg = "HTTP request [#%d]:\n%s " % (threadData.lastRequestUID, conf.method)
requestMsg += "%s" % urlparse.urlsplit(url)[2] or "/"
responseMsg = "HTTP response "
requestHeaders = ""
responseHeaders = None
logHeaders = ""
try:
if silent:
socket.setdefaulttimeout(3)
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(url, multipart)
page = conn.read()
responseHeaders = conn.info()
responseHeaders[URI_HTTP_HEADER] = conn.geturl()
page = decodePage(page, responseHeaders.get("Content-Encoding"), responseHeaders.get("Content-Type"))
return page
else:
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:
if conf.parameters.has_key(PLACE.POST) and not post:
post = conf.parameters[PLACE.POST]
requestMsg += " %s" % httplib.HTTPConnection._http_vsn_str
# Perform HTTP request
headers = forgeHeaders(cookie, ua, referer)
if conf.realTest:
headers["Referer"] = "%s://%s" % (conf.scheme, conf.hostname)
if kb.authHeader:
headers["Authorization"] = kb.authHeader
if kb.proxyAuthHeader:
headers["Proxy-authorization"] = kb.proxyAuthHeader
if auxHeaders:
for key, item in auxHeaders.items():
headers[key] = item
for key, item in headers.items():
headers[key] = unicodeToSafeHTMLValue(item)
post = unicodeToSafeHTMLValue(post)
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("Accept-Encoding"):
requestHeaders += "Accept-Encoding: identity\n"
requestHeaders += "\n".join(["%s: %s" % (header, value) for header, value in req.header_items()])
if not req.has_header("Cookie") and cookieStr:
requestHeaders += "\n%s" % cookieStr[:-2]
if not req.has_header("Connection"):
requestHeaders += "\nConnection: close"
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("Authorization"):
kb.authHeader = req.get_header("Authorization")
if not kb.proxyAuthHeader and req.has_header("Proxy-authorization"):
kb.proxyAuthHeader = req.get_header("Proxy-authorization")
if hasattr(conn, "setcookie"):
kb.redirectSetCookie = conn.setcookie
if hasattr(conn, "redurl") and hasattr(conn, "redcode") 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="1")
if not choice or choice == "1":
pass
else:
conf.url = choice
try:
parseTargetUrl()
return Connect.__getPageProxy(**kwargs)
except sqlmapSyntaxException:
continue
break
conf.redirectHandled = True
# Reset the number of connection retries
kb.retriesCount = 0
# 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("Content-Encoding"), responseHeaders.get("Content-Type"))
status = getUnicode(conn.msg)
# 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("Content-Encoding"), responseHeaders.get("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 conf.verbose <= 5:
responseMsg += getUnicode(logHeaders)
elif conf.verbose > 5:
responseMsg += "%s\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 "timed out" in tbMsg):
return None, None
elif kb.retriesCount < conf.retries and not kb.threadException and not conf.realTest:
kb.retriesCount += 1
warnMsg += ", sqlmap is going to retry the request"
logger.critical(warnMsg)
time.sleep(1)
socket.setdefaulttimeout(conf.timeout)
return Connect.__getPageProxy(**kwargs)
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 conf.verbose <= 5:
responseMsg += getUnicode(logHeaders)
elif conf.verbose > 5:
responseMsg += "%s\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:
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)
if PLACE.POST in conf.parameters:
post = urlencode(conf.parameters[PLACE.POST] if place != PLACE.POST 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 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["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 'Content-Length' in headers:
pageLength = int(headers['Content-Length'])
elif kb.nullConnection == NULLCONNECTION.RANGE and 'Content-Range' in headers:
pageLength = int(headers['Content-Range'][headers['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
elif 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