X-Git-Url: https://code.communitydata.science/nu-vpn-proxy.git/blobdiff_plain/3e09aecfec4e266eeb60024e49a94c40274dcddd..bd194355a4608d6b74c22e6f06e39827de3be384:/gp-saml-gui.py?ds=sidebyside diff --git a/gp-saml-gui.py b/gp-saml-gui.py index 0f2f961..b702d0c 100755 --- a/gp-saml-gui.py +++ b/gp-saml-gui.py @@ -1,6 +1,15 @@ #!/usr/bin/env python3 -import gi +try: + import gi +except ImportError: + try: + import pgi as gi + except ImportError: + gi = None +if gi is None: + raise ImportError("Either gi (PyGObject) or pgi module is required.") + import argparse import pprint import urllib @@ -11,9 +20,9 @@ import ssl from operator import setitem from os import path from shlex import quote -from sys import stderr +from sys import stderr, platform from binascii import a2b_base64, b2a_base64 -from urllib.parse import urlparse +from urllib.parse import urlparse, urlencode gi.require_version('Gtk', '3.0') gi.require_version('WebKit2', '4.0') @@ -122,6 +131,10 @@ class SAMLLoginView: Gtk.main_quit() def parse_args(args = None): + pf2clientos = dict(linux='Linux', darwin='Mac', win32='Windows', cygwin='Windows') + clientos2ocos = dict(Linux='linux-64', Mac='mac-intel', Windows='win') + default_clientos = pf2clientos.get(platform, 'Windows') + p = argparse.ArgumentParser() p.add_argument('server', help='GlobalProtect server (portal or gateway)') p.add_argument('--no-verify', dest='verify', action='store_false', default=True, help='Ignore invalid server certificate') @@ -139,12 +152,16 @@ def parse_args(args = None): g.add_argument('-c','--cert', help='PEM file containing client certificate (and optionally private key)') g.add_argument('--key', help='PEM file containing client private key (if not included in same file as certificate)') g = p.add_argument_group('Debugging and advanced options') - g.add_argument('-v','--verbose', default=0, action='count') + x = p.add_mutually_exclusive_group() + x.add_argument('-v','--verbose', default=1, action='count', help='Increase verbosity of explanatory output to stderr') + x.add_argument('-q','--quiet', dest='verbose', action='store_const', const=0, help='Reduce verbosity to a minimum') g.add_argument('-x','--external', action='store_true', help='Launch external browser (for debugging)') g.add_argument('-u','--uri', action='store_true', help='Treat server as the complete URI of the SAML entry point, rather than GlobalProtect server') + g.add_argument('--clientos', choices=set(pf2clientos.values()), default=default_clientos, help="clientos value to send (default is %(default)s)") p.add_argument('extra', nargs='*', help='Extra form field(s) to pass to include in the login query string (e.g. "magic-cookie-value=deadbeef01234567")') args = p.parse_args(args = None) + args.ocos = clientos2ocos[args.clientos] args.extra = dict(x.split('=', 1) for x in args.extra) if args.cookies: @@ -176,10 +193,11 @@ if __name__ == "__main__": sam, uri, html = 'URI', args.server, None else: endpoint = 'https://{}/{}'.format(args.server, if2prelogin[args.interface]) + data = {'tmp':'tmp', 'kerberos-support':'yes', 'ipv6-support':'no', 'clientVer':4100, 'clientos':args.clientos, **args.extra} if args.verbose: print("Looking for SAML auth tags in response to %s..." % endpoint, file=stderr) try: - res = s.post(endpoint, verify=args.verify, data=args.extra) + res = s.post(endpoint, verify=args.verify, data=data) except Exception as ex: rootex = ex while True: @@ -196,12 +214,14 @@ if __name__ == "__main__": raise xml = ET.fromstring(res.content) if xml.tag != 'prelogin-response': - p.error("This does not appear to be a GlobalProtect prelogin response\nCheck in browser: {}".format(endpoint)) + p.error("This does not appear to be a GlobalProtect prelogin response\nCheck in browser: {}?{}".format(endpoint, urlencode(data))) sam = xml.find('saml-auth-method') sr = xml.find('saml-request') if sam is None or sr is None: - p.error("This does not appear to be a SAML prelogin response ( or tags missing)\n" - "Check in browser: {}".format(endpoint)) + p.error("{} prelogin response does not contain SAML tags ( or missing)\n\n" + "Things to try:\n" + "1) Spoof an officially supported OS (e.g. --clientos=Windows or --clientos=Mac)\n" + "2) Check in browser: {}?{}".format(args.interface.title(), endpoint, urlencode(data))) sam = sam.text sr = a2b_base64(sr.text).decode() if sam == 'POST': @@ -246,24 +266,22 @@ if __name__ == "__main__": if args.verbose: # Warn about ambiguities if server != args.server and not args.uri: - print('''IMPORTANT: During the SAML auth, you were redirected from {} to {}. This probably''' - '''means you should specify {} as the server for final connection, but we're not 100%''' + print('''IMPORTANT: During the SAML auth, you were redirected from {0} to {1}. This probably ''' + '''means you should specify {1} as the server for final connection, but we're not 100% ''' '''sure about this. You should probably try both.\n'''.format(args.server, server), file=stderr) if ifh != args.interface and not args.uri: - print('''IMPORTANT: We started with SAML auth to the {} interface, but received a cookie''' - '''that's associated with the {} interface. You should probably try both.\n'''.format(args.interface, ifh), + print('''IMPORTANT: We started with SAML auth to the {} interface, but received a cookie ''' + '''that's often associated with the {} interface. You should probably try both.\n'''.format(args.interface, ifh), file=stderr) - print('''\nSAML response converted to OpenConnect command line invocation:\n''', file=stderr) - print(''' echo {} |\n openconnect --protocol=gp --user={} --usergroup={}:{} --passwd-on-stdin {}'''.format( - quote(cv), quote(un), quote(ifh), quote(cn), quote(server)), file=stderr) + print(''' echo {} |\n openconnect --protocol=gp --user={} --os={} --usergroup={}:{} --passwd-on-stdin {}'''.format( + quote(cv), quote(un), quote(args.ocos), quote(args.interface), quote(cn), quote(server)), file=stderr) print('''\nSAML response converted to test-globalprotect-login.py invocation:\n''', file=stderr) - print(''' test-globalprotect-login.py --user={} -p '' \\\n https://{}{} {}={}\n'''.format( - quote(un), quote(server), quote(if2auth[ifh]), quote(cn), quote(cv)), file=stderr) - + print(''' test-globalprotect-login.py --user={} --clientos={} -p '' \\\n https://{}/{} {}={}\n'''.format( + quote(un), quote(args.clientos), quote(server), quote(if2auth[args.interface]), quote(cn), quote(cv)), file=stderr) varvals = { - 'HOST': quote('https://%s/%s:%s' % (server, if2auth[ifh], cn)), - 'USER': quote(un), 'COOKIE': quote(cv), + 'HOST': quote('https://%s/%s:%s' % (server, if2auth[args.interface], cn)), + 'USER': quote(un), 'COOKIE': quote(cv), 'OS': quote(args.ocos), } print('\n'.join('%s=%s' % pair for pair in varvals.items()))