8 import xml.etree.ElementTree as ET
11 from operator import setitem
13 from shlex import quote
14 from sys import stderr
15 from binascii import a2b_base64, b2a_base64
16 from urllib.parse import urlparse
18 gi.require_version('Gtk', '3.0')
19 gi.require_version('WebKit2', '4.0')
20 from gi.repository import Gtk, WebKit2, GLib
23 def __init__(self, uri, html=None, verbose=False, cookies=None, verify=True):
26 # API reference: https://lazka.github.io/pgi-docs/#WebKit2-4.0
31 self.verbose = verbose
33 self.ctx = WebKit2.WebContext.get_default()
35 self.ctx.set_tls_errors_policy(WebKit2.TLSErrorsPolicy.IGNORE)
36 self.cookies = self.ctx.get_cookie_manager()
38 self.cookies.set_accept_policy(WebKit2.CookieAcceptPolicy.ALWAYS)
39 self.cookies.set_persistent_storage(args.cookies, WebKit2.CookiePersistentStorage.TEXT)
40 self.wview = WebKit2.WebView()
42 window.resize(500, 500)
43 window.add(self.wview)
45 window.set_title("SAML Login")
46 window.connect('delete-event', self.close)
47 self.wview.connect('load-changed', self.get_saml_headers)
48 self.wview.connect('resource-load-started', self.log_resources)
51 self.wview.load_html(html, uri)
53 self.wview.load_uri(uri)
55 def close(self, window, event):
59 def log_resources(self, webview, resource, request):
61 print('[REQUEST] %s for resource %s' % (request.get_http_method() or 'Request', resource.get_uri()), file=stderr)
63 resource.connect('finished', self.log_resource_details, request)
65 def log_resource_details(self, resource, request):
66 m = request.get_http_method() or 'Request'
67 uri = resource.get_uri()
68 rs = resource.get_response()
69 h = rs.get_http_headers() if rs else None
71 ct, cl = h.get_content_type(), h.get_content_length()
72 content_type, charset = ct[0], ct.params.get('charset')
73 content_details = '%d bytes of %s%s for ' % (cl, content_type, ('; charset='+charset) if charset else '')
74 print('[RECEIVE] %sresource %s %s' % (content_details if h else '', m, uri), file=stderr)
76 def log_resource_text(self, resource, result, content_type, charset=None, show_headers=None):
77 data = resource.get_data_finish(result)
78 content_details = '%d bytes of %s%s for ' % (len(data), content_type, ('; charset='+charset) if charset else '')
79 print('[DATA ] %sresource %s' % (content_details, resource.get_uri()), file=stderr)
81 for h,v in show_headers.items():
82 print('%s: %s' % (h, v), file=stderr)
84 if charset or content_type.startswith('text/'):
85 print(data.decode(charset or 'utf-8'), file=stderr)
87 def get_saml_headers(self, webview, event):
88 if event != WebKit2.LoadEvent.FINISHED:
91 mr = webview.get_main_resource()
93 rs = mr.get_response()
94 h = rs.get_http_headers()
96 print('[PAGE ] Finished loading page %s' % uri, file=stderr)
100 # convert to normal dict
102 h.foreach(lambda k, v: setitem(d, k, v))
103 # filter to interesting headers
104 fd = {name:v for name, v in d.items() if name.startswith('saml-') or name in ('prelogin-cookie', 'portal-userauthcookie')}
105 if fd and self.verbose:
106 print("[SAML ] Got SAML result headers: %r" % fd, file=stderr)
108 # display everything we found
109 ct = h.get_content_type()
110 mr.get_data(None, self.log_resource_text, ct[0], ct.params.get('charset'), d)
112 # check if we're done
113 self.saml_result.update(fd, server=urlparse(uri).netloc)
114 GLib.timeout_add(1000, self.check_done)
116 def check_done(self):
118 if 'saml-username' in d and ('prelogin-cookie' in d or 'portal-userauthcookie' in d):
120 print("[SAML ] Got all required SAML headers, done.", file=stderr)
124 def parse_args(args = None):
125 p = argparse.ArgumentParser()
126 p.add_argument('server', help='GlobalProtect server (portal or gateway)')
127 p.add_argument('--no-verify', dest='verify', action='store_false', default=True, help='Ignore invalid server certificate')
128 x = p.add_mutually_exclusive_group()
129 x.add_argument('-C', '--cookies', default='~/.gp-saml-gui-cookies',
130 help='Use and store cookies in this file (instead of default %(default)s)')
131 x.add_argument('-K', '--no-cookies', dest='cookies', action='store_const', const=None,
132 help="Don't use or store cookies at all")
133 x = p.add_mutually_exclusive_group()
134 x.add_argument('-p','--portal', dest='interface', action='store_const', const='portal', default='gateway',
135 help='SAML auth to portal')
136 x.add_argument('-g','--gateway', dest='interface', action='store_const', const='gateway',
137 help='SAML auth to gateway (default)')
138 g = p.add_argument_group('Client certificate')
139 g.add_argument('-c','--cert', help='PEM file containing client certificate (and optionally private key)')
140 g.add_argument('--key', help='PEM file containing client private key (if not included in same file as certificate)')
141 g = p.add_argument_group('Debugging and advanced options')
142 g.add_argument('-v','--verbose', default=0, action='count')
143 g.add_argument('-x','--external', action='store_true', help='Launch external browser (for debugging)')
144 g.add_argument('-u','--uri', action='store_true', help='Treat server as the complete URI of the SAML entry point, rather than GlobalProtect server')
145 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")')
146 args = p.parse_args(args = None)
148 args.extra = dict(x.split('=', 1) for x in args.extra)
151 args.cookies = path.expanduser(args.cookies)
153 if args.cert and args.key:
154 args.cert, args.key = (args.cert, args.key), None
156 args.cert = (args.cert, None)
158 p.error('--key specified without --cert')
164 if __name__ == "__main__":
165 p, args = parse_args()
167 s = requests.Session()
168 s.headers['User-Agent'] = 'PAN GlobalProtect'
171 if2prelogin = {'portal':'global-protect/prelogin.esp','gateway':'ssl-vpn/prelogin.esp'}
172 if2auth = {'portal':'global-protect/getconfig.esp','gateway':'ssl-vpn/login.esp'}
174 # query prelogin.esp and parse SAML bits
176 sam, uri, html = 'URI', args.server, None
178 endpoint = 'https://{}/{}'.format(args.server, if2prelogin[args.interface])
180 print("Looking for SAML auth tags in response to %s..." % endpoint, file=stderr)
182 res = s.post(endpoint, verify=args.verify, data=args.extra)
183 except Exception as ex:
186 if isinstance(rootex, ssl.SSLError):
188 elif not rootex.__cause__ and not rootex.__context__:
190 rootex = rootex.__cause__ or rootex.__context__
191 if isinstance(rootex, ssl.CertificateError):
192 p.error("SSL certificate error (try --no-verify to ignore): %s" % rootex)
193 elif isinstance(rootex, ssl.SSLError):
194 p.error("SSL error: %s" % rootex)
197 xml = ET.fromstring(res.content)
198 if xml.tag != 'prelogin-response':
199 p.error("This does not appear to be a GlobalProtect prelogin response\nCheck in browser: {}".format(endpoint))
200 sam = xml.find('saml-auth-method')
201 sr = xml.find('saml-request')
202 if sam is None or sr is None:
203 p.error("This does not appear to be a SAML prelogin response (<saml-auth-method> or <saml-request> tags missing)\n"
204 "Check in browser: {}".format(endpoint))
206 sr = a2b_base64(sr.text).decode()
209 elif sam == 'REDIRECT':
212 p.error("Unknown SAML method (%s)" % sam)
214 # launch external browser for debugging
216 print("Got SAML %s, opening external browser for debugging..." % sam, file=stderr)
219 uri = 'data:text/html;base64,' + b2a_base64(html.encode()).decode()
223 # spawn WebKit view to do SAML interactive login
225 print("Got SAML %s, opening browser..." % sam, file=stderr)
226 slv = SAMLLoginView(uri, html, verbose=args.verbose, cookies=args.cookies, verify=args.verify)
229 print("Login window closed by user.", file=stderr)
232 p.error('''Login window closed without producing SAML cookies.''')
234 # extract response and convert to OpenConnect command-line
235 un = slv.saml_result.get('saml-username')
236 server = slv.saml_result.get('server', args.server)
238 for cn, ifh in (('prelogin-cookie','gateway'), ('portal-userauthcookie','portal')):
239 cv = slv.saml_result.get(cn)
244 p.error("Didn't get an expected cookie. Something went wrong.")
247 # Warn about ambiguities
248 if server != args.server and not args.uri:
249 print('''IMPORTANT: During the SAML auth, you were redirected from {} to {}. This probably'''
250 '''means you should specify {} as the server for final connection, but we're not 100%'''
251 '''sure about this. You should probably try both.\n'''.format(args.server, server), file=stderr)
252 if ifh != args.interface and not args.uri:
253 print('''IMPORTANT: We started with SAML auth to the {} interface, but received a cookie'''
254 '''that's associated with the {} interface. You should probably try both.\n'''.format(args.interface, ifh),
257 print('''\nSAML response converted to OpenConnect command line invocation:\n''', file=stderr)
258 print(''' echo {} |\n openconnect --protocol=gp --user={} --usergroup={}:{} --passwd-on-stdin {}'''.format(
259 quote(cv), quote(un), quote(ifh), quote(cn), quote(server)), file=stderr)
261 print('''\nSAML response converted to test-globalprotect-login.py invocation:\n''', file=stderr)
262 print(''' test-globalprotect-login.py --user={} -p '' \\\n https://{}{} {}={}\n'''.format(
263 quote(un), quote(server), quote(if2auth[ifh]), quote(cn), quote(cv)), file=stderr)
266 'HOST': quote('https://%s/%s:%s' % (server, if2auth[ifh], cn)),
267 'USER': quote(un), 'COOKIE': quote(cv),
269 print('\n'.join('%s=%s' % pair for pair in varvals.items()))