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1029 lines
40 KiB
Python
1029 lines
40 KiB
Python
# This code is part of Ansible, but is an independent component.
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# This particular file snippet, and this file snippet only, is BSD licensed.
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# Modules you write using this snippet, which is embedded dynamically by Ansible
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# still belong to the author of the module, and may assign their own license
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# to the complete work.
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#
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# Copyright (c), Michael DeHaan <michael.dehaan@gmail.com>, 2012-2013
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# Copyright (c), Toshio Kuratomi <tkuratomi@ansible.com>, 2015
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#
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# Simplified BSD License (see licenses/simplified_bsd.txt or https://opensource.org/licenses/BSD-2-Clause)
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#
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# The match_hostname function and supporting code is under the terms and
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# conditions of the Python Software Foundation License. They were taken from
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# the Python3 standard library and adapted for use in Python2. See comments in the
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# source for which code precisely is under this License.
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#
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# PSF License (see licenses/PSF-license.txt or https://opensource.org/licenses/Python-2.0)
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'''
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The **urls** utils module offers a replacement for the urllib2 python library.
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urllib2 is the python stdlib way to retrieve files from the Internet but it
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lacks some security features (around verifying SSL certificates) that users
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should care about in most situations. Using the functions in this module corrects
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deficiencies in the urllib2 module wherever possible.
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There are also third-party libraries (for instance, requests) which can be used
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to replace urllib2 with a more secure library. However, all third party libraries
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require that the library be installed on the managed machine. That is an extra step
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for users making use of a module. If possible, avoid third party libraries by using
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this code instead.
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'''
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import base64
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import netrc
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import os
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import platform
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import re
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import socket
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import sys
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import tempfile
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import traceback
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try:
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import httplib
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except ImportError:
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# Python 3
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import http.client as httplib
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import ansible.module_utils.six.moves.http_cookiejar as cookiejar
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import ansible.module_utils.six.moves.urllib.request as urllib_request
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import ansible.module_utils.six.moves.urllib.error as urllib_error
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from ansible.module_utils.basic import get_distribution
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from ansible.module_utils._text import to_bytes, to_native, to_text
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try:
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# python3
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import urllib.request as urllib_request
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from urllib.request import AbstractHTTPHandler
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except ImportError:
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# python2
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import urllib2 as urllib_request
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from urllib2 import AbstractHTTPHandler
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try:
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from ansible.module_utils.six.moves.urllib.parse import urlparse, urlunparse
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HAS_URLPARSE = True
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except:
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HAS_URLPARSE = False
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try:
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import ssl
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HAS_SSL = True
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except:
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HAS_SSL = False
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try:
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# SNI Handling needs python2.7.9's SSLContext
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from ssl import create_default_context, SSLContext
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HAS_SSLCONTEXT = True
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except ImportError:
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HAS_SSLCONTEXT = False
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# SNI Handling for python < 2.7.9 with urllib3 support
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try:
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# urllib3>=1.15
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HAS_URLLIB3_SSL_WRAP_SOCKET = False
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try:
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from urllib3.contrib.pyopenssl import PyOpenSSLContext
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except ImportError:
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from requests.packages.urllib3.contrib.pyopenssl import PyOpenSSLContext
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HAS_URLLIB3_PYOPENSSLCONTEXT = True
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except ImportError:
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# urllib3<1.15,>=1.6
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HAS_URLLIB3_PYOPENSSLCONTEXT = False
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try:
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try:
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from urllib3.contrib.pyopenssl import ssl_wrap_socket
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except ImportError:
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from requests.packages.urllib3.contrib.pyopenssl import ssl_wrap_socket
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HAS_URLLIB3_SSL_WRAP_SOCKET = True
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except ImportError:
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pass
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# Select a protocol that includes all secure tls protocols
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# Exclude insecure ssl protocols if possible
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if HAS_SSL:
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# If we can't find extra tls methods, ssl.PROTOCOL_TLSv1 is sufficient
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PROTOCOL = ssl.PROTOCOL_TLSv1
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if not HAS_SSLCONTEXT and HAS_SSL:
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try:
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import ctypes
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import ctypes.util
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except ImportError:
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# python 2.4 (likely rhel5 which doesn't have tls1.1 support in its openssl)
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pass
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else:
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libssl_name = ctypes.util.find_library('ssl')
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libssl = ctypes.CDLL(libssl_name)
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for method in ('TLSv1_1_method', 'TLSv1_2_method'):
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try:
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libssl[method]
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# Found something - we'll let openssl autonegotiate and hope
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# the server has disabled sslv2 and 3. best we can do.
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PROTOCOL = ssl.PROTOCOL_SSLv23
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break
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except AttributeError:
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pass
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del libssl
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LOADED_VERIFY_LOCATIONS = set()
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HAS_MATCH_HOSTNAME = True
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try:
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from ssl import match_hostname, CertificateError
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except ImportError:
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try:
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from backports.ssl_match_hostname import match_hostname, CertificateError
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except ImportError:
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HAS_MATCH_HOSTNAME = False
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if not HAS_MATCH_HOSTNAME:
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# The following block of code is under the terms and conditions of the
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# Python Software Foundation License
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"""The match_hostname() function from Python 3.4, essential when using SSL."""
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class CertificateError(ValueError):
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pass
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def _dnsname_match(dn, hostname, max_wildcards=1):
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"""Matching according to RFC 6125, section 6.4.3
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http://tools.ietf.org/html/rfc6125#section-6.4.3
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"""
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pats = []
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if not dn:
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return False
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# Ported from python3-syntax:
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# leftmost, *remainder = dn.split(r'.')
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parts = dn.split(r'.')
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leftmost = parts[0]
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remainder = parts[1:]
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wildcards = leftmost.count('*')
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if wildcards > max_wildcards:
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# Issue #17980: avoid denials of service by refusing more
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# than one wildcard per fragment. A survey of established
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# policy among SSL implementations showed it to be a
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# reasonable choice.
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raise CertificateError(
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"too many wildcards in certificate DNS name: " + repr(dn))
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# speed up common case w/o wildcards
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if not wildcards:
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return dn.lower() == hostname.lower()
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# RFC 6125, section 6.4.3, subitem 1.
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# The client SHOULD NOT attempt to match a presented identifier in which
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# the wildcard character comprises a label other than the left-most label.
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if leftmost == '*':
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# When '*' is a fragment by itself, it matches a non-empty dotless
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# fragment.
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pats.append('[^.]+')
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elif leftmost.startswith('xn--') or hostname.startswith('xn--'):
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# RFC 6125, section 6.4.3, subitem 3.
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# The client SHOULD NOT attempt to match a presented identifier
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# where the wildcard character is embedded within an A-label or
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# U-label of an internationalized domain name.
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pats.append(re.escape(leftmost))
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else:
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# Otherwise, '*' matches any dotless string, e.g. www*
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pats.append(re.escape(leftmost).replace(r'\*', '[^.]*'))
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# add the remaining fragments, ignore any wildcards
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for frag in remainder:
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pats.append(re.escape(frag))
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pat = re.compile(r'\A' + r'\.'.join(pats) + r'\Z', re.IGNORECASE)
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return pat.match(hostname)
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def match_hostname(cert, hostname):
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"""Verify that *cert* (in decoded format as returned by
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SSLSocket.getpeercert()) matches the *hostname*. RFC 2818 and RFC 6125
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rules are followed, but IP addresses are not accepted for *hostname*.
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CertificateError is raised on failure. On success, the function
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returns nothing.
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"""
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if not cert:
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raise ValueError("empty or no certificate")
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dnsnames = []
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san = cert.get('subjectAltName', ())
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for key, value in san:
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if key == 'DNS':
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if _dnsname_match(value, hostname):
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return
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dnsnames.append(value)
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if not dnsnames:
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# The subject is only checked when there is no dNSName entry
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# in subjectAltName
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for sub in cert.get('subject', ()):
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for key, value in sub:
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# XXX according to RFC 2818, the most specific Common Name
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# must be used.
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if key == 'commonName':
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if _dnsname_match(value, hostname):
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return
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dnsnames.append(value)
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if len(dnsnames) > 1:
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raise CertificateError("hostname %r " "doesn't match either of %s" % (hostname, ', '.join(map(repr, dnsnames))))
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elif len(dnsnames) == 1:
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raise CertificateError("hostname %r doesn't match %r" % (hostname, dnsnames[0]))
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else:
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raise CertificateError("no appropriate commonName or subjectAltName fields were found")
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# End of Python Software Foundation Licensed code
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HAS_MATCH_HOSTNAME = True
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|
|
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# This is a dummy cacert provided for Mac OS since you need at least 1
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# ca cert, regardless of validity, for Python on Mac OS to use the
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# keychain functionality in OpenSSL for validating SSL certificates.
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# See: http://mercurial.selenic.com/wiki/CACertificates#Mac_OS_X_10.6_and_higher
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b_DUMMY_CA_CERT = b"""-----BEGIN CERTIFICATE-----
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MIICvDCCAiWgAwIBAgIJAO8E12S7/qEpMA0GCSqGSIb3DQEBBQUAMEkxCzAJBgNV
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BAYTAlVTMRcwFQYDVQQIEw5Ob3J0aCBDYXJvbGluYTEPMA0GA1UEBxMGRHVyaGFt
|
|
MRAwDgYDVQQKEwdBbnNpYmxlMB4XDTE0MDMxODIyMDAyMloXDTI0MDMxNTIyMDAy
|
|
MlowSTELMAkGA1UEBhMCVVMxFzAVBgNVBAgTDk5vcnRoIENhcm9saW5hMQ8wDQYD
|
|
VQQHEwZEdXJoYW0xEDAOBgNVBAoTB0Fuc2libGUwgZ8wDQYJKoZIhvcNAQEBBQAD
|
|
gY0AMIGJAoGBANtvpPq3IlNlRbCHhZAcP6WCzhc5RbsDqyh1zrkmLi0GwcQ3z/r9
|
|
gaWfQBYhHpobK2Tiq11TfraHeNB3/VfNImjZcGpN8Fl3MWwu7LfVkJy3gNNnxkA1
|
|
4Go0/LmIvRFHhbzgfuo9NFgjPmmab9eqXJceqZIlz2C8xA7EeG7ku0+vAgMBAAGj
|
|
gaswgagwHQYDVR0OBBYEFPnN1nPRqNDXGlCqCvdZchRNi/FaMHkGA1UdIwRyMHCA
|
|
FPnN1nPRqNDXGlCqCvdZchRNi/FaoU2kSzBJMQswCQYDVQQGEwJVUzEXMBUGA1UE
|
|
CBMOTm9ydGggQ2Fyb2xpbmExDzANBgNVBAcTBkR1cmhhbTEQMA4GA1UEChMHQW5z
|
|
aWJsZYIJAO8E12S7/qEpMAwGA1UdEwQFMAMBAf8wDQYJKoZIhvcNAQEFBQADgYEA
|
|
MUB80IR6knq9K/tY+hvPsZer6eFMzO3JGkRFBh2kn6JdMDnhYGX7AXVHGflrwNQH
|
|
qFy+aenWXsC0ZvrikFxbQnX8GVtDADtVznxOi7XzFw7JOxdsVrpXgSN0eh0aMzvV
|
|
zKPZsZ2miVGclicJHzm5q080b1p/sZtuKIEZk6vZqEg=
|
|
-----END CERTIFICATE-----
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|
"""
|
|
|
|
#
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|
# Exceptions
|
|
#
|
|
|
|
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|
class ConnectionError(Exception):
|
|
"""Failed to connect to the server"""
|
|
pass
|
|
|
|
|
|
class ProxyError(ConnectionError):
|
|
"""Failure to connect because of a proxy"""
|
|
pass
|
|
|
|
|
|
class SSLValidationError(ConnectionError):
|
|
"""Failure to connect due to SSL validation failing"""
|
|
pass
|
|
|
|
|
|
class NoSSLError(SSLValidationError):
|
|
"""Needed to connect to an HTTPS url but no ssl library available to verify the certificate"""
|
|
pass
|
|
|
|
# Some environments (Google Compute Engine's CoreOS deploys) do not compile
|
|
# against openssl and thus do not have any HTTPS support.
|
|
CustomHTTPSConnection = CustomHTTPSHandler = None
|
|
if hasattr(httplib, 'HTTPSConnection') and hasattr(urllib_request, 'HTTPSHandler'):
|
|
class CustomHTTPSConnection(httplib.HTTPSConnection):
|
|
def __init__(self, *args, **kwargs):
|
|
httplib.HTTPSConnection.__init__(self, *args, **kwargs)
|
|
self.context = None
|
|
if HAS_SSLCONTEXT:
|
|
self.context = create_default_context()
|
|
elif HAS_URLLIB3_PYOPENSSLCONTEXT:
|
|
self.context = PyOpenSSLContext(PROTOCOL)
|
|
if self.context and self.cert_file:
|
|
self.context.load_cert_chain(self.cert_file, self.key_file)
|
|
|
|
def connect(self):
|
|
"Connect to a host on a given (SSL) port."
|
|
|
|
if hasattr(self, 'source_address'):
|
|
sock = socket.create_connection((self.host, self.port), self.timeout, self.source_address)
|
|
else:
|
|
sock = socket.create_connection((self.host, self.port), self.timeout)
|
|
|
|
server_hostname = self.host
|
|
# Note: self._tunnel_host is not available on py < 2.6 but this code
|
|
# isn't used on py < 2.6 (lack of create_connection)
|
|
if self._tunnel_host:
|
|
self.sock = sock
|
|
self._tunnel()
|
|
server_hostname = self._tunnel_host
|
|
|
|
if HAS_SSLCONTEXT or HAS_URLLIB3_PYOPENSSLCONTEXT:
|
|
self.sock = self.context.wrap_socket(sock, server_hostname=server_hostname)
|
|
elif HAS_URLLIB3_SSL_WRAP_SOCKET:
|
|
self.sock = ssl_wrap_socket(sock, keyfile=self.key_file, cert_reqs=ssl.CERT_NONE, certfile=self.cert_file, ssl_version=PROTOCOL,
|
|
server_hostname=server_hostname)
|
|
else:
|
|
self.sock = ssl.wrap_socket(sock, keyfile=self.key_file, certfile=self.cert_file, ssl_version=PROTOCOL)
|
|
|
|
class CustomHTTPSHandler(urllib_request.HTTPSHandler):
|
|
|
|
def https_open(self, req):
|
|
return self.do_open(CustomHTTPSConnection, req)
|
|
|
|
https_request = AbstractHTTPHandler.do_request_
|
|
|
|
|
|
class HTTPSClientAuthHandler(urllib_request.HTTPSHandler):
|
|
'''Handles client authentication via cert/key
|
|
|
|
This is a fairly lightweight extension on HTTPSHandler, and can be used
|
|
in place of HTTPSHandler
|
|
'''
|
|
|
|
def __init__(self, client_cert=None, client_key=None, **kwargs):
|
|
urllib_request.HTTPSHandler.__init__(self, **kwargs)
|
|
self.client_cert = client_cert
|
|
self.client_key = client_key
|
|
|
|
def https_open(self, req):
|
|
return self.do_open(self._build_https_connection, req)
|
|
|
|
def _build_https_connection(self, host, **kwargs):
|
|
kwargs.update({
|
|
'cert_file': self.client_cert,
|
|
'key_file': self.client_key,
|
|
})
|
|
try:
|
|
kwargs['context'] = self._context
|
|
except AttributeError:
|
|
pass
|
|
return httplib.HTTPSConnection(host, **kwargs)
|
|
|
|
|
|
def generic_urlparse(parts):
|
|
'''
|
|
Returns a dictionary of url parts as parsed by urlparse,
|
|
but accounts for the fact that older versions of that
|
|
library do not support named attributes (ie. .netloc)
|
|
'''
|
|
generic_parts = dict()
|
|
if hasattr(parts, 'netloc'):
|
|
# urlparse is newer, just read the fields straight
|
|
# from the parts object
|
|
generic_parts['scheme'] = parts.scheme
|
|
generic_parts['netloc'] = parts.netloc
|
|
generic_parts['path'] = parts.path
|
|
generic_parts['params'] = parts.params
|
|
generic_parts['query'] = parts.query
|
|
generic_parts['fragment'] = parts.fragment
|
|
generic_parts['username'] = parts.username
|
|
generic_parts['password'] = parts.password
|
|
generic_parts['hostname'] = parts.hostname
|
|
generic_parts['port'] = parts.port
|
|
else:
|
|
# we have to use indexes, and then parse out
|
|
# the other parts not supported by indexing
|
|
generic_parts['scheme'] = parts[0]
|
|
generic_parts['netloc'] = parts[1]
|
|
generic_parts['path'] = parts[2]
|
|
generic_parts['params'] = parts[3]
|
|
generic_parts['query'] = parts[4]
|
|
generic_parts['fragment'] = parts[5]
|
|
# get the username, password, etc.
|
|
try:
|
|
netloc_re = re.compile(r'^((?:\w)+(?::(?:\w)+)?@)?([A-Za-z0-9.-]+)(:\d+)?$')
|
|
match = netloc_re.match(parts[1])
|
|
auth = match.group(1)
|
|
hostname = match.group(2)
|
|
port = match.group(3)
|
|
if port:
|
|
# the capture group for the port will include the ':',
|
|
# so remove it and convert the port to an integer
|
|
port = int(port[1:])
|
|
if auth:
|
|
# the capture group above includes the @, so remove it
|
|
# and then split it up based on the first ':' found
|
|
auth = auth[:-1]
|
|
username, password = auth.split(':', 1)
|
|
else:
|
|
username = password = None
|
|
generic_parts['username'] = username
|
|
generic_parts['password'] = password
|
|
generic_parts['hostname'] = hostname
|
|
generic_parts['port'] = port
|
|
except:
|
|
generic_parts['username'] = None
|
|
generic_parts['password'] = None
|
|
generic_parts['hostname'] = parts[1]
|
|
generic_parts['port'] = None
|
|
return generic_parts
|
|
|
|
|
|
class RequestWithMethod(urllib_request.Request):
|
|
'''
|
|
Workaround for using DELETE/PUT/etc with urllib2
|
|
Originally contained in library/net_infrastructure/dnsmadeeasy
|
|
'''
|
|
|
|
def __init__(self, url, method, data=None, headers=None):
|
|
if headers is None:
|
|
headers = {}
|
|
self._method = method.upper()
|
|
urllib_request.Request.__init__(self, url, data, headers)
|
|
|
|
def get_method(self):
|
|
if self._method:
|
|
return self._method
|
|
else:
|
|
return urllib_request.Request.get_method(self)
|
|
|
|
|
|
def RedirectHandlerFactory(follow_redirects=None, validate_certs=True):
|
|
"""This is a class factory that closes over the value of
|
|
``follow_redirects`` so that the RedirectHandler class has access to
|
|
that value without having to use globals, and potentially cause problems
|
|
where ``open_url`` or ``fetch_url`` are used multiple times in a module.
|
|
"""
|
|
|
|
class RedirectHandler(urllib_request.HTTPRedirectHandler):
|
|
"""This is an implementation of a RedirectHandler to match the
|
|
functionality provided by httplib2. It will utilize the value of
|
|
``follow_redirects`` that is passed into ``RedirectHandlerFactory``
|
|
to determine how redirects should be handled in urllib2.
|
|
"""
|
|
|
|
def redirect_request(self, req, fp, code, msg, hdrs, newurl):
|
|
handler = maybe_add_ssl_handler(newurl, validate_certs)
|
|
if handler:
|
|
urllib_request._opener.add_handler(handler)
|
|
|
|
if follow_redirects == 'urllib2':
|
|
return urllib_request.HTTPRedirectHandler.redirect_request(self, req, fp, code, msg, hdrs, newurl)
|
|
elif follow_redirects in ['no', 'none', False]:
|
|
raise urllib_error.HTTPError(newurl, code, msg, hdrs, fp)
|
|
|
|
do_redirect = False
|
|
if follow_redirects in ['all', 'yes', True]:
|
|
do_redirect = (code >= 300 and code < 400)
|
|
|
|
elif follow_redirects == 'safe':
|
|
m = req.get_method()
|
|
do_redirect = (code >= 300 and code < 400 and m in ('GET', 'HEAD'))
|
|
|
|
if do_redirect:
|
|
# be conciliant with URIs containing a space
|
|
newurl = newurl.replace(' ', '%20')
|
|
newheaders = dict((k, v) for k, v in req.headers.items()
|
|
if k.lower() not in ("content-length", "content-type"))
|
|
try:
|
|
# Python 2-3.3
|
|
origin_req_host = req.get_origin_req_host()
|
|
except AttributeError:
|
|
# Python 3.4+
|
|
origin_req_host = req.origin_req_host
|
|
return urllib_request.Request(newurl,
|
|
headers=newheaders,
|
|
origin_req_host=origin_req_host,
|
|
unverifiable=True)
|
|
else:
|
|
raise urllib_error.HTTPError(req.get_full_url(), code, msg, hdrs, fp)
|
|
|
|
return RedirectHandler
|
|
|
|
|
|
def build_ssl_validation_error(hostname, port, paths, exc=None):
|
|
'''Inteligently build out the SSLValidationError based on what support
|
|
you have installed
|
|
'''
|
|
|
|
msg = [
|
|
('Failed to validate the SSL certificate for %s:%s.'
|
|
' Make sure your managed systems have a valid CA'
|
|
' certificate installed.')
|
|
]
|
|
if not HAS_SSLCONTEXT:
|
|
msg.append('If the website serving the url uses SNI you need'
|
|
' python >= 2.7.9 on your managed machine')
|
|
msg.append(' (the python executable used (%s) is version: %s)' %
|
|
(sys.executable, ''.join(sys.version.splitlines())))
|
|
if not HAS_URLLIB3_PYOPENSSLCONTEXT or not HAS_URLLIB3_SSL_WRAP_SOCKET:
|
|
msg.append('or you can install the `urllib3`, `pyOpenSSL`,'
|
|
' `ndg-httpsclient`, and `pyasn1` python modules')
|
|
|
|
msg.append('to perform SNI verification in python >= 2.6.')
|
|
|
|
msg.append('You can use validate_certs=False if you do'
|
|
' not need to confirm the servers identity but this is'
|
|
' unsafe and not recommended.'
|
|
' Paths checked for this platform: %s.')
|
|
|
|
if exc:
|
|
msg.append('The exception msg was: %s.' % to_native(exc))
|
|
|
|
raise SSLValidationError(' '.join(msg) % (hostname, port, ", ".join(paths)))
|
|
|
|
|
|
class SSLValidationHandler(urllib_request.BaseHandler):
|
|
'''
|
|
A custom handler class for SSL validation.
|
|
|
|
Based on:
|
|
http://stackoverflow.com/questions/1087227/validate-ssl-certificates-with-python
|
|
http://techknack.net/python-urllib2-handlers/
|
|
'''
|
|
CONNECT_COMMAND = "CONNECT %s:%s HTTP/1.0\r\nConnection: close\r\n"
|
|
|
|
def __init__(self, hostname, port):
|
|
self.hostname = hostname
|
|
self.port = port
|
|
|
|
def get_ca_certs(self):
|
|
# tries to find a valid CA cert in one of the
|
|
# standard locations for the current distribution
|
|
|
|
ca_certs = []
|
|
paths_checked = []
|
|
|
|
system = to_text(platform.system(), errors='surrogate_or_strict')
|
|
# build a list of paths to check for .crt/.pem files
|
|
# based on the platform type
|
|
paths_checked.append('/etc/ssl/certs')
|
|
if system == u'Linux':
|
|
paths_checked.append('/etc/pki/ca-trust/extracted/pem')
|
|
paths_checked.append('/etc/pki/tls/certs')
|
|
paths_checked.append('/usr/share/ca-certificates/cacert.org')
|
|
elif system == u'FreeBSD':
|
|
paths_checked.append('/usr/local/share/certs')
|
|
elif system == u'OpenBSD':
|
|
paths_checked.append('/etc/ssl')
|
|
elif system == u'NetBSD':
|
|
ca_certs.append('/etc/openssl/certs')
|
|
elif system == u'SunOS':
|
|
paths_checked.append('/opt/local/etc/openssl/certs')
|
|
|
|
# fall back to a user-deployed cert in a standard
|
|
# location if the OS platform one is not available
|
|
paths_checked.append('/etc/ansible')
|
|
|
|
tmp_fd, tmp_path = tempfile.mkstemp()
|
|
to_add_fd, to_add_path = tempfile.mkstemp()
|
|
to_add = False
|
|
|
|
# Write the dummy ca cert if we are running on Mac OS X
|
|
if system == u'Darwin':
|
|
os.write(tmp_fd, b_DUMMY_CA_CERT)
|
|
# Default Homebrew path for OpenSSL certs
|
|
paths_checked.append('/usr/local/etc/openssl')
|
|
|
|
# for all of the paths, find any .crt or .pem files
|
|
# and compile them into single temp file for use
|
|
# in the ssl check to speed up the test
|
|
for path in paths_checked:
|
|
if os.path.exists(path) and os.path.isdir(path):
|
|
dir_contents = os.listdir(path)
|
|
for f in dir_contents:
|
|
full_path = os.path.join(path, f)
|
|
if os.path.isfile(full_path) and os.path.splitext(f)[1] in ('.crt', '.pem'):
|
|
try:
|
|
cert_file = open(full_path, 'rb')
|
|
cert = cert_file.read()
|
|
cert_file.close()
|
|
os.write(tmp_fd, cert)
|
|
os.write(tmp_fd, b'\n')
|
|
if full_path not in LOADED_VERIFY_LOCATIONS:
|
|
to_add = True
|
|
os.write(to_add_fd, cert)
|
|
os.write(to_add_fd, b'\n')
|
|
LOADED_VERIFY_LOCATIONS.add(full_path)
|
|
except (OSError, IOError):
|
|
pass
|
|
|
|
if not to_add:
|
|
to_add_path = None
|
|
return (tmp_path, to_add_path, paths_checked)
|
|
|
|
def validate_proxy_response(self, response, valid_codes=None):
|
|
'''
|
|
make sure we get back a valid code from the proxy
|
|
'''
|
|
valid_codes = [200] if valid_codes is None else valid_codes
|
|
|
|
try:
|
|
(http_version, resp_code, msg) = re.match(br'(HTTP/\d\.\d) (\d\d\d) (.*)', response).groups()
|
|
if int(resp_code) not in valid_codes:
|
|
raise Exception
|
|
except:
|
|
raise ProxyError('Connection to proxy failed')
|
|
|
|
def detect_no_proxy(self, url):
|
|
'''
|
|
Detect if the 'no_proxy' environment variable is set and honor those locations.
|
|
'''
|
|
env_no_proxy = os.environ.get('no_proxy')
|
|
if env_no_proxy:
|
|
env_no_proxy = env_no_proxy.split(',')
|
|
netloc = urlparse(url).netloc
|
|
|
|
for host in env_no_proxy:
|
|
if netloc.endswith(host) or netloc.split(':')[0].endswith(host):
|
|
# Our requested URL matches something in no_proxy, so don't
|
|
# use the proxy for this
|
|
return False
|
|
return True
|
|
|
|
def _make_context(self, to_add_ca_cert_path):
|
|
if HAS_SSLCONTEXT:
|
|
context = create_default_context()
|
|
elif HAS_URLLIB3_PYOPENSSLCONTEXT:
|
|
context = PyOpenSSLContext(PROTOCOL)
|
|
else:
|
|
raise NotImplementedError('Host libraries are too old to support creating an sslcontext')
|
|
|
|
if to_add_ca_cert_path:
|
|
context.load_verify_locations(to_add_ca_cert_path)
|
|
return context
|
|
|
|
def http_request(self, req):
|
|
tmp_ca_cert_path, to_add_ca_cert_path, paths_checked = self.get_ca_certs()
|
|
https_proxy = os.environ.get('https_proxy')
|
|
context = None
|
|
try:
|
|
context = self._make_context(to_add_ca_cert_path)
|
|
except Exception:
|
|
# We'll make do with no context below
|
|
pass
|
|
|
|
# Detect if 'no_proxy' environment variable is set and if our URL is included
|
|
use_proxy = self.detect_no_proxy(req.get_full_url())
|
|
|
|
if not use_proxy:
|
|
# ignore proxy settings for this host request
|
|
return req
|
|
|
|
try:
|
|
if https_proxy:
|
|
proxy_parts = generic_urlparse(urlparse(https_proxy))
|
|
port = proxy_parts.get('port') or 443
|
|
s = socket.create_connection((proxy_parts.get('hostname'), port))
|
|
if proxy_parts.get('scheme') == 'http':
|
|
s.sendall(to_bytes(self.CONNECT_COMMAND % (self.hostname, self.port), errors='surrogate_or_strict'))
|
|
if proxy_parts.get('username'):
|
|
credentials = "%s:%s" % (proxy_parts.get('username', ''), proxy_parts.get('password', ''))
|
|
s.sendall(b'Proxy-Authorization: Basic %s\r\n' % base64.b64encode(to_bytes(credentials, errors='surrogate_or_strict')).strip())
|
|
s.sendall(b'\r\n')
|
|
connect_result = b""
|
|
while connect_result.find(b"\r\n\r\n") <= 0:
|
|
connect_result += s.recv(4096)
|
|
# 128 kilobytes of headers should be enough for everyone.
|
|
if len(connect_result) > 131072:
|
|
raise ProxyError('Proxy sent too verbose headers. Only 128KiB allowed.')
|
|
self.validate_proxy_response(connect_result)
|
|
if context:
|
|
ssl_s = context.wrap_socket(s, server_hostname=self.hostname)
|
|
elif HAS_URLLIB3_SSL_WRAP_SOCKET:
|
|
ssl_s = ssl_wrap_socket(s, ca_certs=tmp_ca_cert_path, cert_reqs=ssl.CERT_REQUIRED, ssl_version=PROTOCOL, server_hostname=self.hostname)
|
|
else:
|
|
ssl_s = ssl.wrap_socket(s, ca_certs=tmp_ca_cert_path, cert_reqs=ssl.CERT_REQUIRED, ssl_version=PROTOCOL)
|
|
match_hostname(ssl_s.getpeercert(), self.hostname)
|
|
else:
|
|
raise ProxyError('Unsupported proxy scheme: %s. Currently ansible only supports HTTP proxies.' % proxy_parts.get('scheme'))
|
|
else:
|
|
s = socket.create_connection((self.hostname, self.port))
|
|
if context:
|
|
ssl_s = context.wrap_socket(s, server_hostname=self.hostname)
|
|
elif HAS_URLLIB3_SSL_WRAP_SOCKET:
|
|
ssl_s = ssl_wrap_socket(s, ca_certs=tmp_ca_cert_path, cert_reqs=ssl.CERT_REQUIRED, ssl_version=PROTOCOL, server_hostname=self.hostname)
|
|
else:
|
|
ssl_s = ssl.wrap_socket(s, ca_certs=tmp_ca_cert_path, cert_reqs=ssl.CERT_REQUIRED, ssl_version=PROTOCOL)
|
|
match_hostname(ssl_s.getpeercert(), self.hostname)
|
|
# close the ssl connection
|
|
# ssl_s.unwrap()
|
|
s.close()
|
|
except (ssl.SSLError, CertificateError) as e:
|
|
build_ssl_validation_error(self.hostname, self.port, paths_checked, e)
|
|
except socket.error as e:
|
|
raise ConnectionError('Failed to connect to %s at port %s: %s' % (self.hostname, self.port, to_native(e)))
|
|
|
|
try:
|
|
# cleanup the temp file created, don't worry
|
|
# if it fails for some reason
|
|
os.remove(tmp_ca_cert_path)
|
|
except:
|
|
pass
|
|
|
|
try:
|
|
# cleanup the temp file created, don't worry
|
|
# if it fails for some reason
|
|
if to_add_ca_cert_path:
|
|
os.remove(to_add_ca_cert_path)
|
|
except:
|
|
pass
|
|
|
|
return req
|
|
|
|
https_request = http_request
|
|
|
|
|
|
def maybe_add_ssl_handler(url, validate_certs):
|
|
# FIXME: change the following to use the generic_urlparse function
|
|
# to remove the indexed references for 'parsed'
|
|
parsed = urlparse(url)
|
|
if parsed[0] == 'https' and validate_certs:
|
|
if not HAS_SSL:
|
|
raise NoSSLError('SSL validation is not available in your version of python. You can use validate_certs=False,'
|
|
' however this is unsafe and not recommended')
|
|
|
|
# do the cert validation
|
|
netloc = parsed[1]
|
|
if '@' in netloc:
|
|
netloc = netloc.split('@', 1)[1]
|
|
if ':' in netloc:
|
|
hostname, port = netloc.split(':', 1)
|
|
port = int(port)
|
|
else:
|
|
hostname = netloc
|
|
port = 443
|
|
# create the SSL validation handler and
|
|
# add it to the list of handlers
|
|
return SSLValidationHandler(hostname, port)
|
|
|
|
|
|
def open_url(url, data=None, headers=None, method=None, use_proxy=True,
|
|
force=False, last_mod_time=None, timeout=10, validate_certs=True,
|
|
url_username=None, url_password=None, http_agent=None,
|
|
force_basic_auth=False, follow_redirects='urllib2',
|
|
client_cert=None, client_key=None, cookies=None):
|
|
'''
|
|
Sends a request via HTTP(S) or FTP using urllib2 (Python2) or urllib (Python3)
|
|
|
|
Does not require the module environment
|
|
'''
|
|
handlers = []
|
|
ssl_handler = maybe_add_ssl_handler(url, validate_certs)
|
|
if ssl_handler:
|
|
handlers.append(ssl_handler)
|
|
|
|
# FIXME: change the following to use the generic_urlparse function
|
|
# to remove the indexed references for 'parsed'
|
|
parsed = urlparse(url)
|
|
if parsed[0] != 'ftp':
|
|
username = url_username
|
|
|
|
if headers is None:
|
|
headers = {}
|
|
|
|
if username:
|
|
password = url_password
|
|
netloc = parsed[1]
|
|
elif '@' in parsed[1]:
|
|
credentials, netloc = parsed[1].split('@', 1)
|
|
if ':' in credentials:
|
|
username, password = credentials.split(':', 1)
|
|
else:
|
|
username = credentials
|
|
password = ''
|
|
|
|
parsed = list(parsed)
|
|
parsed[1] = netloc
|
|
|
|
# reconstruct url without credentials
|
|
url = urlunparse(parsed)
|
|
|
|
if username and not force_basic_auth:
|
|
passman = urllib_request.HTTPPasswordMgrWithDefaultRealm()
|
|
|
|
# this creates a password manager
|
|
passman.add_password(None, netloc, username, password)
|
|
|
|
# because we have put None at the start it will always
|
|
# use this username/password combination for urls
|
|
# for which `theurl` is a super-url
|
|
authhandler = urllib_request.HTTPBasicAuthHandler(passman)
|
|
digest_authhandler = urllib_request.HTTPDigestAuthHandler(passman)
|
|
|
|
# create the AuthHandler
|
|
handlers.append(authhandler)
|
|
handlers.append(digest_authhandler)
|
|
|
|
elif username and force_basic_auth:
|
|
headers["Authorization"] = basic_auth_header(username, password)
|
|
|
|
else:
|
|
try:
|
|
rc = netrc.netrc(os.environ.get('NETRC'))
|
|
login = rc.authenticators(parsed[1])
|
|
except IOError:
|
|
login = None
|
|
|
|
if login:
|
|
username, _, password = login
|
|
if username and password:
|
|
headers["Authorization"] = basic_auth_header(username, password)
|
|
|
|
if not use_proxy:
|
|
proxyhandler = urllib_request.ProxyHandler({})
|
|
handlers.append(proxyhandler)
|
|
|
|
if HAS_SSLCONTEXT and not validate_certs:
|
|
# In 2.7.9, the default context validates certificates
|
|
context = SSLContext(ssl.PROTOCOL_SSLv23)
|
|
context.options |= ssl.OP_NO_SSLv2
|
|
context.options |= ssl.OP_NO_SSLv3
|
|
context.verify_mode = ssl.CERT_NONE
|
|
context.check_hostname = False
|
|
handlers.append(HTTPSClientAuthHandler(client_cert=client_cert,
|
|
client_key=client_key,
|
|
context=context))
|
|
elif client_cert:
|
|
handlers.append(HTTPSClientAuthHandler(client_cert=client_cert,
|
|
client_key=client_key))
|
|
|
|
# pre-2.6 versions of python cannot use the custom https
|
|
# handler, since the socket class is lacking create_connection.
|
|
# Some python builds lack HTTPS support.
|
|
if hasattr(socket, 'create_connection') and CustomHTTPSHandler:
|
|
handlers.append(CustomHTTPSHandler)
|
|
|
|
handlers.append(RedirectHandlerFactory(follow_redirects, validate_certs))
|
|
|
|
# add some nicer cookie handling
|
|
if cookies is not None:
|
|
handlers.append(urllib_request.HTTPCookieProcessor(cookies))
|
|
|
|
opener = urllib_request.build_opener(*handlers)
|
|
urllib_request.install_opener(opener)
|
|
|
|
data = to_bytes(data, nonstring='passthru')
|
|
if method:
|
|
if method.upper() not in ('OPTIONS', 'GET', 'HEAD', 'POST', 'PUT', 'DELETE', 'TRACE', 'CONNECT', 'PATCH'):
|
|
raise ConnectionError('invalid HTTP request method; %s' % method.upper())
|
|
request = RequestWithMethod(url, method.upper(), data)
|
|
else:
|
|
request = urllib_request.Request(url, data)
|
|
|
|
# add the custom agent header, to help prevent issues
|
|
# with sites that block the default urllib agent string
|
|
if http_agent:
|
|
request.add_header('User-agent', http_agent)
|
|
|
|
# Cache control
|
|
# Either we directly force a cache refresh
|
|
if force:
|
|
request.add_header('cache-control', 'no-cache')
|
|
# or we do it if the original is more recent than our copy
|
|
elif last_mod_time:
|
|
tstamp = last_mod_time.strftime('%a, %d %b %Y %H:%M:%S +0000')
|
|
request.add_header('If-Modified-Since', tstamp)
|
|
|
|
# user defined headers now, which may override things we've set above
|
|
if headers:
|
|
if not isinstance(headers, dict):
|
|
raise ValueError("headers provided to fetch_url() must be a dict")
|
|
for header in headers:
|
|
request.add_header(header, headers[header])
|
|
|
|
urlopen_args = [request, None]
|
|
if sys.version_info >= (2, 6, 0):
|
|
# urlopen in python prior to 2.6.0 did not
|
|
# have a timeout parameter
|
|
urlopen_args.append(timeout)
|
|
|
|
r = urllib_request.urlopen(*urlopen_args)
|
|
return r
|
|
|
|
#
|
|
# Module-related functions
|
|
#
|
|
|
|
|
|
def basic_auth_header(username, password):
|
|
"""Takes a username and password and returns a byte string suitable for
|
|
using as value of an Authorization header to do basic auth.
|
|
"""
|
|
return b"Basic %s" % base64.b64encode(to_bytes("%s:%s" % (username, password), errors='surrogate_or_strict'))
|
|
|
|
|
|
def url_argument_spec():
|
|
'''
|
|
Creates an argument spec that can be used with any module
|
|
that will be requesting content via urllib/urllib2
|
|
'''
|
|
return dict(
|
|
url=dict(),
|
|
force=dict(default='no', aliases=['thirsty'], type='bool'),
|
|
http_agent=dict(default='ansible-httpget'),
|
|
use_proxy=dict(default='yes', type='bool'),
|
|
validate_certs=dict(default='yes', type='bool'),
|
|
url_username=dict(required=False),
|
|
url_password=dict(required=False, no_log=True),
|
|
force_basic_auth=dict(required=False, type='bool', default='no'),
|
|
client_cert=dict(required=False, type='path', default=None),
|
|
client_key=dict(required=False, type='path', default=None),
|
|
)
|
|
|
|
|
|
def fetch_url(module, url, data=None, headers=None, method=None,
|
|
use_proxy=True, force=False, last_mod_time=None, timeout=10):
|
|
"""Sends a request via HTTP(S) or FTP (needs the module as parameter)
|
|
|
|
:arg module: The AnsibleModule (used to get username, password etc. (s.b.).
|
|
:arg url: The url to use.
|
|
|
|
:kwarg data: The data to be sent (in case of POST/PUT).
|
|
:kwarg headers: A dict with the request headers.
|
|
:kwarg method: "POST", "PUT", etc.
|
|
:kwarg boolean use_proxy: Default: True
|
|
:kwarg boolean force: If True: Do not get a cached copy (Default: False)
|
|
:kwarg last_mod_time: Default: None
|
|
:kwarg int timeout: Default: 10
|
|
|
|
:returns: A tuple of (**response**, **info**). Use ``response.body()`` to read the data.
|
|
The **info** contains the 'status' and other meta data. When a HttpError (status > 400)
|
|
occurred then ``info['body']`` contains the error response data::
|
|
|
|
Example::
|
|
|
|
data={...}
|
|
resp, info = fetch_url(module,
|
|
"http://example.com",
|
|
data=module.jsonify(data)
|
|
header={Content-type': 'application/json'},
|
|
method="POST")
|
|
status_code = info["status"]
|
|
body = resp.read()
|
|
if status_code >= 400 :
|
|
body = info['body']
|
|
"""
|
|
|
|
if not HAS_URLPARSE:
|
|
module.fail_json(msg='urlparse is not installed')
|
|
|
|
# Get validate_certs from the module params
|
|
validate_certs = module.params.get('validate_certs', True)
|
|
|
|
username = module.params.get('url_username', '')
|
|
password = module.params.get('url_password', '')
|
|
http_agent = module.params.get('http_agent', 'ansible-httpget')
|
|
force_basic_auth = module.params.get('force_basic_auth', '')
|
|
|
|
follow_redirects = module.params.get('follow_redirects', 'urllib2')
|
|
|
|
client_cert = module.params.get('client_cert')
|
|
client_key = module.params.get('client_key')
|
|
|
|
cookies = cookiejar.LWPCookieJar()
|
|
|
|
r = None
|
|
info = dict(url=url)
|
|
try:
|
|
r = open_url(url, data=data, headers=headers, method=method,
|
|
use_proxy=use_proxy, force=force, last_mod_time=last_mod_time, timeout=timeout,
|
|
validate_certs=validate_certs, url_username=username,
|
|
url_password=password, http_agent=http_agent, force_basic_auth=force_basic_auth,
|
|
follow_redirects=follow_redirects, client_cert=client_cert,
|
|
client_key=client_key, cookies=cookies)
|
|
info.update(r.info())
|
|
# parse the cookies into a nice dictionary
|
|
cookie_dict = dict()
|
|
for cookie in cookies:
|
|
cookie_dict[cookie.name] = cookie.value
|
|
info['cookies'] = cookie_dict
|
|
# finally update the result with a message about the fetch
|
|
info.update(dict(msg="OK (%s bytes)" % r.headers.get('Content-Length', 'unknown'), url=r.geturl(), status=r.code))
|
|
except NoSSLError as e:
|
|
distribution = get_distribution()
|
|
if distribution is not None and distribution.lower() == 'redhat':
|
|
module.fail_json(msg='%s. You can also install python-ssl from EPEL' % to_native(e))
|
|
else:
|
|
module.fail_json(msg='%s' % to_native(e))
|
|
except (ConnectionError, ValueError) as e:
|
|
module.fail_json(msg=to_native(e))
|
|
except urllib_error.HTTPError as e:
|
|
try:
|
|
body = e.read()
|
|
except AttributeError:
|
|
body = ''
|
|
|
|
# Try to add exception info to the output but don't fail if we can't
|
|
try:
|
|
info.update(dict(**e.info()))
|
|
except:
|
|
pass
|
|
|
|
info.update({'msg': to_native(e), 'body': body, 'status': e.code})
|
|
|
|
except urllib_error.URLError as e:
|
|
code = int(getattr(e, 'code', -1))
|
|
info.update(dict(msg="Request failed: %s" % to_native(e), status=code))
|
|
except socket.error as e:
|
|
info.update(dict(msg="Connection failure: %s" % to_native(e), status=-1))
|
|
except Exception as e:
|
|
info.update(dict(msg="An unknown error occurred: %s" % to_native(e), status=-1),
|
|
exception=traceback.format_exc())
|
|
|
|
return r, info
|