mirror of
https://github.com/sqlmapproject/sqlmap.git
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133 lines
5.2 KiB
Python
133 lines
5.2 KiB
Python
#!/usr/bin/env python
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"""
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Copyright (c) 2006-2020 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 distutils.version
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import re
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import socket
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from lib.core.common import filterNone
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from lib.core.common import getSafeExString
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from lib.core.compat import xrange
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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.exception import SqlmapConnectionException
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from lib.core.settings import PYVERSION
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from thirdparty.six.moves import http_client as _http_client
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from thirdparty.six.moves import urllib as _urllib
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ssl = None
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try:
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import ssl as _ssl
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ssl = _ssl
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except ImportError:
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pass
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_protocols = filterNone(getattr(ssl, _, None) for _ in ("PROTOCOL_TLSv1_2", "PROTOCOL_TLSv1_1", "PROTOCOL_TLSv1", "PROTOCOL_SSLv3", "PROTOCOL_SSLv23", "PROTOCOL_SSLv2"))
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_lut = dict((getattr(ssl, _), _) for _ in dir(ssl) if _.startswith("PROTOCOL_"))
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_contexts = {}
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class HTTPSConnection(_http_client.HTTPSConnection):
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"""
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Connection class that enables usage of newer SSL protocols.
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Reference: http://bugs.python.org/msg128686
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"""
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def __init__(self, *args, **kwargs):
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# NOTE: Dirty patch for https://bugs.python.org/issue38251 / https://github.com/sqlmapproject/sqlmap/issues/4158
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if hasattr(ssl, "_create_default_https_context"):
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if None not in _contexts:
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_contexts[None] = ssl._create_default_https_context()
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kwargs["context"] = _contexts[None]
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self.retrying = False
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_http_client.HTTPSConnection.__init__(self, *args, **kwargs)
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def connect(self):
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def create_sock():
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sock = socket.create_connection((self.host, self.port), self.timeout)
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if getattr(self, "_tunnel_host", None):
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self.sock = sock
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self._tunnel()
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return sock
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success = False
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# Reference(s): https://docs.python.org/2/library/ssl.html#ssl.SSLContext
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# https://www.mnot.net/blog/2014/12/27/python_2_and_tls_sni
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if re.search(r"\A[\d.]+\Z", conf.hostname) is None and kb.tlsSNI.get(conf.hostname) is not False and hasattr(ssl, "SSLContext"):
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for protocol in (_ for _ in _protocols if _ >= ssl.PROTOCOL_TLSv1):
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try:
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sock = create_sock()
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if protocol not in _contexts:
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_contexts[protocol] = ssl.SSLContext(protocol)
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try:
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# Reference(s): https://askubuntu.com/a/1263098
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# https://askubuntu.com/a/1250807
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_contexts[protocol].set_ciphers("DEFAULT@SECLEVEL=1")
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except ssl.SSLError:
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pass
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result = _contexts[protocol].wrap_socket(sock, do_handshake_on_connect=True, server_hostname=conf.hostname)
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if result:
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success = True
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self.sock = result
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_protocols.remove(protocol)
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_protocols.insert(0, protocol)
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break
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else:
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sock.close()
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except (ssl.SSLError, socket.error, _http_client.BadStatusLine) as ex:
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self._tunnel_host = None
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logger.debug("SSL connection error occurred for '%s' ('%s')" % (_lut[protocol], getSafeExString(ex)))
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if kb.tlsSNI.get(conf.hostname) is None:
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kb.tlsSNI[conf.hostname] = success
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if not success:
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for protocol in _protocols:
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try:
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sock = create_sock()
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_ = ssl.wrap_socket(sock, self.key_file, self.cert_file, ssl_version=protocol)
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if _:
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success = True
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self.sock = _
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_protocols.remove(protocol)
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_protocols.insert(0, protocol)
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break
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else:
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sock.close()
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except (ssl.SSLError, socket.error, _http_client.BadStatusLine) as ex:
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self._tunnel_host = None
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logger.debug("SSL connection error occurred for '%s' ('%s')" % (_lut[protocol], getSafeExString(ex)))
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if not success:
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errMsg = "can't establish SSL connection"
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# Reference: https://docs.python.org/2/library/ssl.html
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if distutils.version.LooseVersion(PYVERSION) < distutils.version.LooseVersion("2.7.9"):
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errMsg += " (please retry with Python >= 2.7.9)"
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if kb.sslSuccess and not self.retrying:
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self.retrying = True
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for _ in xrange(conf.retries):
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try:
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self.connect()
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except SqlmapConnectionException:
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pass
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else:
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return
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raise SqlmapConnectionException(errMsg)
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else:
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kb.sslSuccess = True
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class HTTPSHandler(_urllib.request.HTTPSHandler):
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def https_open(self, req):
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return self.do_open(HTTPSConnection if ssl else _http_client.HTTPSConnection, req)
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