sqlmap/lib/utils/crawler.py
2012-10-30 18:38:10 +01:00

130 lines
5.4 KiB
Python

#!/usr/bin/env python
"""
Copyright (c) 2006-2012 sqlmap developers (http://sqlmap.org/)
See the file 'doc/COPYING' for copying permission
"""
import httplib
import re
import urlparse
import time
from lib.core.common import clearConsoleLine
from lib.core.common import dataToStdout
from lib.core.common import findPageForms
from lib.core.common import singleTimeWarnMessage
from lib.core.data import conf
from lib.core.data import kb
from lib.core.data import logger
from lib.core.exception import sqlmapConnectionException
from lib.core.settings import CRAWL_EXCLUDE_EXTENSIONS
from lib.core.threads import getCurrentThreadData
from lib.core.threads import runThreads
from lib.request.connect import Connect as Request
from thirdparty.beautifulsoup.beautifulsoup import BeautifulSoup
from thirdparty.oset.pyoset import oset
class Crawler:
"""
This class defines methods used to perform crawling (command
line option '--crawl'
"""
def getTargetUrls(self):
try:
threadData = getCurrentThreadData()
threadData.shared.outputs = oset()
def crawlThread():
threadData = getCurrentThreadData()
while kb.threadContinue:
with kb.locks.limits:
if threadData.shared.unprocessed:
current = threadData.shared.unprocessed.pop()
else:
break
content = None
try:
if current:
content = Request.getPage(url=current, crawling=True, raise404=False)[0]
except sqlmapConnectionException, e:
errMsg = "connection exception detected (%s). skipping " % e
errMsg += "url '%s'" % current
logger.critical(errMsg)
except httplib.InvalidURL, e:
errMsg = "invalid url detected (%s). skipping " % e
errMsg += "url '%s'" % current
logger.critical(errMsg)
if not kb.threadContinue:
break
if isinstance(content, unicode):
try:
soup = BeautifulSoup(content)
for tag in soup('a'):
if tag.get("href"):
url = urlparse.urljoin(conf.url, tag.get("href"))
# 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 conf.scope:
if not re.search(conf.scope, url, re.I):
continue
elif not target:
continue
if url.split('.')[-1].lower() not in CRAWL_EXCLUDE_EXTENSIONS:
with kb.locks.outputs:
threadData.shared.deeper.add(url)
if re.search(r"(.*?)\?(.+)", url):
threadData.shared.outputs.add(url)
except UnicodeEncodeError: # for non-HTML files
pass
finally:
if conf.forms:
findPageForms(content, current, False, True)
if conf.verbose in (1, 2):
threadData.shared.count += 1
status = '%d/%d links visited (%d%s)' % (threadData.shared.count, threadData.shared.length, round(100.0*threadData.shared.count/threadData.shared.length), '%')
dataToStdout("\r[%s] [INFO] %s" % (time.strftime("%X"), status), True)
threadData.shared.deeper = set()
threadData.shared.unprocessed = set([conf.url])
logger.info("starting crawler")
for i in xrange(conf.crawlDepth):
if i > 0 and conf.threads == 1:
singleTimeWarnMessage("running in a single-thread mode. This could take a while.")
threadData.shared.count = 0
threadData.shared.length = len(threadData.shared.unprocessed)
numThreads = min(conf.threads, len(threadData.shared.unprocessed))
logger.info("searching for links with depth %d" % (i + 1))
runThreads(numThreads, crawlThread)
clearConsoleLine(True)
if threadData.shared.deeper:
threadData.shared.unprocessed = set(threadData.shared.deeper)
else:
break
except KeyboardInterrupt:
warnMsg = "user aborted during crawling. sqlmap "
warnMsg += "will use partial list"
logger.warn(warnMsg)
finally:
clearConsoleLine(True)
if not threadData.shared.outputs:
warnMsg = "no usable links found (with GET parameters)"
logger.warn(warnMsg)
else:
for url in threadData.shared.outputs:
kb.targets.add(( url, None, None, None ))