sqlmap/lib/utils/crawler.py
Miroslav Stampar 8968c708a0 minor update
2011-06-20 14:27:24 +00:00

121 lines
4.5 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 re
import threading
import urlparse
import time
from lib.core.common import clearConsoleLine
from lib.core.common import dataToStdout
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.threads import getCurrentThreadData
from lib.core.threads import runThreads
from lib.request.connect import Connect as Request
from extra.beautifulsoup.beautifulsoup import BeautifulSoup
from extra.oset.pyoset import oset
class Crawler:
"""
This class defines methods used to perform crawling (command
line option '--crawl'
"""
def getTargetUrls(self, depth=1):
try:
threadData = getCurrentThreadData()
threadData.shared.outputs = oset()
lockNames = ('limits', 'outputs', 'ioLock')
for lock in lockNames:
kb.locks[lock] = threading.Lock()
def crawlThread():
threadData = getCurrentThreadData()
while kb.threadContinue:
kb.locks.limits.acquire()
if threadData.shared.unprocessed:
current = threadData.shared.unprocessed.pop()
kb.locks.limits.release()
else:
kb.locks.limits.release()
break
content = Request.getPage(url=current)[0]
if not kb.threadContinue:
break
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
kb.locks.outputs.acquire()
threadData.shared.deeper.add(url)
if re.search(r"(.*?)\?(.+)", url):
threadData.shared.outputs.add(url)
kb.locks.outputs.release()
if conf.verbose in (1, 2):
kb.locks.ioLock.acquire()
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)
kb.locks.ioLock.release()
threadData.shared.deeper = set()
threadData.shared.unprocessed = set([conf.url])
logger.info("starting crawler")
for i in xrange(depth):
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)
threadData.shared.unprocessed = threadData.shared.deeper
except KeyboardInterrupt:
warnMsg = "user aborted during crawling. sqlmap "
warnMsg += "will use partial list"
logger.warn(warnMsg)
except sqlmapConnectionException, e:
errMsg = "connection exception detected. sqlmap "
errMsg += "will use partial list"
errMsg += "'%s'" % e
logger.critical(errMsg)
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.targetUrls.add(( url, None, None, None ))
kb.suppressResumeInfo = False