this script should live here

2020-01-25 16:46:05 -08:00 · 2020-01-25 16:46:05 -08:00 · b1c36bf95e
commit b1c36bf95e
parent dae4360c38
1 changed files with 128 additions and 0 deletions
--- a/test-globalprotect-login.py
+++ b/test-globalprotect-login.py
@ -0,0 +1,128 @@
+#!/usr/bin/python3
+
+from __future__ import print_function
+from sys import stderr, version_info
+if (version_info >= (3, 0)):
+    from urllib.parse import urlparse, urlencode
+    raw_input = input
+else:
+    from urlparse import urlparse
+    from urllib import urlencode
+import requests
+import argparse
+import getpass
+import os
+import xml.etree.ElementTree as ET
+import posixpath
+from binascii import a2b_base64
+from tempfile import NamedTemporaryFile
+from shlex import quote
+
+p = argparse.ArgumentParser()
+p.add_argument('-v','--verbose', default=0, action='count')
+p.add_argument('endpoint', help='GlobalProtect server; can append /ssl-vpn/login.esp (default) or /global-protect/getconfig.esp')
+p.add_argument('extra', nargs='*', help='Extra field to pass to include in the login query string (e.g. "portal-userauthcookie=deadbeef01234567")')
+g = p.add_argument_group('Login credentials')
+g.add_argument('-u','--user', help='Username (will prompt if unspecified)')
+g.add_argument('-p','--password', help='Password (will prompt if unspecified)')
+g.add_argument('-c','--cert', help='PEM file containing client certificate (and optionally private key)')
+g.add_argument('--computer', default=os.uname()[1], help="Computer name (default is `hostname`)")
+g.add_argument('--key', help='PEM file containing client private key (if not included in same file as certificate)')
+p.add_argument('-b','--browse', action='store_true', help='Automatically spawn browser for SAML')
+p.add_argument('--no-verify', dest='verify', action='store_false', default=True, help='Ignore invalid server certificate')
+args = p.parse_args()
+
+extra = dict(x.split('=', 1) for x in args.extra)
+endpoint = urlparse(('https://' if '//' not in args.endpoint else '') + args.endpoint, 'https:')
+if not endpoint.path:
+    print("Endpoint path unspecified: defaulting to /ssl-vpn/login.esp", file=stderr)
+    endpoint = endpoint._replace(path = '/ssl-vpn/login.esp')
+prelogin = (posixpath.split(endpoint.path)[-1] == 'prelogin.esp')
+
+if args.cert and args.key:
+    cert = (args.cert, args.key)
+elif args.cert:
+    cert = (args.cert, None)
+elif args.key:
+    p.error('--key specified without --cert')
+else:
+    cert = None
+
+s = requests.Session()
+s.headers['User-Agent'] = 'PAN GlobalProtect'
+s.cert = cert
+
+if prelogin:
+    data = extra
+else:
+    # same request params work for /global-protect/getconfig.esp as for /ssl-vpn/login.esp
+    if args.user == None:
+        args.user = raw_input('Username: ')
+    if args.password == None:
+        args.password = getpass.getpass('Password: ')
+    data=dict(user=args.user, passwd=args.password,
+              # required
+              jnlpReady='jnlpReady', ok='Login', direct='yes',
+              # optional but might affect behavior
+              clientVer=4100, server=endpoint.netloc, prot='https:',
+              computer=args.computer,
+              **extra)
+res = s.post(endpoint.geturl(), verify=args.verify, data=data)
+
+if args.verbose:
+    print("Request body:\n", res.request.body, file=stderr)
+
+res.raise_for_status()
+
+# build openconnect "cookie" if the result is a <jnlp>
+
+try:
+    xml = ET.fromstring(res.text)
+except Exception:
+    xml = None
+
+if xml is not None and xml.tag == 'jnlp':
+    arguments = [(t.text or '') for t in xml.iter('argument')]
+    arguments += [''] * (16-len(arguments))
+    cookie = urlencode({'authcookie': arguments[1], 'portal': arguments[3], 'user': arguments[4], 'domain': arguments[7],
+                        'computer': args.computer, 'preferred-ip': arguments[15]})
+    if cert:
+        cert_and_key = ' \\\n        ' + ' '.join('%s "%s"' % (opt, quote(fn)) for opt, fn in zip(('-c','-k'), cert) if fn)
+    else:
+        cert_and_key = ''
+
+    print('''
+
+Extracted connection cookie from <jnlp>. Use this to connect:
+
+    openconnect --protocol=gp --usergroup=gateway %s \\
+        --cookie %s%s
+''' % (quote(endpoint.netloc), quote(cookie), cert_and_key), file=stderr)
+
+# do SAML request if the result is <prelogin-response><saml...>
+
+elif xml is not None and xml.tag == 'prelogin-response' and None not in (xml.find('saml-auth-method'), xml.find('saml-request')):
+    import webbrowser
+    sam = xml.find('saml-auth-method').text
+    sr = xml.find('saml-request').text
+    if sam == 'POST':
+        with NamedTemporaryFile(delete=False, suffix='.html') as tf:
+            tf.write(a2b_base64(sr))
+        if args.browse:
+            print("Got SAML POST, browsing to %s" % tf.name)
+            webbrowser.open('file://' + tf.name)
+        else:
+            print("Got SAML POST, saved to:\n\t%s" % tf.name)
+    elif sam == 'REDIRECT':
+        if args.browse:
+            print("Got SAML REDIRECT, browsing to %s" % sr)
+            webbrowser.open(sr)
+        else:
+            print("Got SAML REDIRECT to:\n\t%s" % sr)
+
+# Just print the result
+
+else:
+    if args.verbose:
+        print(res.headers, file=stderr)
+    print(res.text)