import urllib
import requests
import xml.etree.ElementTree as ET
+import ssl
+from operator import setitem
+from os import path
+from shlex import quote
from sys import stderr
-from binascii import a2b_base64
+from binascii import a2b_base64, b2a_base64
+from urllib.parse import urlparse
gi.require_version('Gtk', '3.0')
-from gi.repository import Gtk
-
gi.require_version('WebKit2', '4.0')
-from gi.repository import WebKit2
+from gi.repository import Gtk, WebKit2, GLib
class SAMLLoginView:
- def __init__(self, uri, html=None, verbose=False):
+ def __init__(self, uri, html=None, verbose=False, cookies=None, verify=True):
window = Gtk.Window()
# API reference: https://lazka.github.io/pgi-docs/#WebKit2-4.0
- # TODO: cookies, see https://stackoverflow.com/questions/48368219/webkit2-webview-how-to-store-cookies-and-reuse-it-again
+ self.closed = False
self.success = False
+ self.saml_result = {}
+ self.verbose = verbose
+
+ self.ctx = WebKit2.WebContext.get_default()
+ if not args.verify:
+ self.ctx.set_tls_errors_policy(WebKit2.TLSErrorsPolicy.IGNORE)
+ self.cookies = self.ctx.get_cookie_manager()
+ if args.cookies:
+ self.cookies.set_accept_policy(WebKit2.CookieAcceptPolicy.ALWAYS)
+ self.cookies.set_persistent_storage(args.cookies, WebKit2.CookiePersistentStorage.TEXT)
self.wview = WebKit2.WebView()
- if html:
- self.wview.load_html(html, uri)
- else:
- self.wview.load_uri(uri)
+
window.resize(500, 500)
window.add(self.wview)
window.show_all()
window.set_title("SAML Login")
- window.connect('delete-event', Gtk.main_quit)
+ window.connect('delete-event', self.close)
self.wview.connect('load-changed', self.get_saml_headers)
+ self.wview.connect('resource-load-started', self.log_resources)
+
+ if html:
+ self.wview.load_html(html, uri)
+ else:
+ self.wview.load_uri(uri)
+
+ def close(self, window, event):
+ self.closed = True
+ Gtk.main_quit()
+
+ def log_resources(self, webview, resource, request):
+ if self.verbose > 1:
+ print('[REQUEST] %s for resource %s' % (request.get_http_method() or 'Request', resource.get_uri()), file=stderr)
+ if self.verbose > 2:
+ resource.connect('finished', self.log_resource_details, request)
+
+ def log_resource_details(self, resource, request):
+ m = request.get_http_method() or 'Request'
+ uri = resource.get_uri()
+ rs = resource.get_response()
+ h = rs.get_http_headers() if rs else None
+ if h:
+ ct, cl = h.get_content_type(), h.get_content_length()
+ content_type, charset = ct[0], ct.params.get('charset')
+ content_details = '%d bytes of %s%s for ' % (cl, content_type, ('; charset='+charset) if charset else '')
+ print('[RECEIVE] %sresource %s %s' % (content_details if h else '', m, uri), file=stderr)
+
+ def log_resource_text(self, resource, result, content_type, charset=None, show_headers=None):
+ data = resource.get_data_finish(result)
+ content_details = '%d bytes of %s%s for ' % (len(data), content_type, ('; charset='+charset) if charset else '')
+ print('[DATA ] %sresource %s' % (content_details, resource.get_uri()), file=stderr)
+ if show_headers:
+ for h,v in show_headers.items():
+ print('%s: %s' % (h, v), file=stderr)
+ print(file=stderr)
+ if charset or content_type.startswith('text/'):
+ print(data.decode(charset or 'utf-8'), file=stderr)
def get_saml_headers(self, webview, event):
if event != WebKit2.LoadEvent.FINISHED:
return
mr = webview.get_main_resource()
- print("Finished loading %s..." % mr.get_uri(), file=stderr)
+ uri = mr.get_uri()
rs = mr.get_response()
h = rs.get_http_headers()
- if h:
- l = []
- def listify(name, value, t=l):
- if (name.startswith('saml-') or name in ('prelogin-cookie', 'portal-userauthcookie')):
- t.append((name, value))
- h.foreach(listify)
- self.saml_result = d = dict(l)
- if d:
- print("Got SAML relevant headers, done: %r" % d, file=stderr)
- self.success = True
- Gtk.main_quit()
+ if self.verbose:
+ print('[PAGE ] Finished loading page %s' % uri, file=stderr)
+ if not h:
+ return
+
+ # convert to normal dict
+ d = {}
+ h.foreach(lambda k, v: setitem(d, k, v))
+ # filter to interesting headers
+ fd = {name:v for name, v in d.items() if name.startswith('saml-') or name in ('prelogin-cookie', 'portal-userauthcookie')}
+ if fd and self.verbose:
+ print("[SAML ] Got SAML result headers: %r" % fd, file=stderr)
+ if self.verbose > 1:
+ # display everything we found
+ ct = h.get_content_type()
+ mr.get_data(None, self.log_resource_text, ct[0], ct.params.get('charset'), d)
+
+ # check if we're done
+ self.saml_result.update(fd, server=urlparse(uri).netloc)
+ GLib.timeout_add(1000, self.check_done)
+
+ def check_done(self):
+ d = self.saml_result
+ if 'saml-username' in d and ('prelogin-cookie' in d or 'portal-userauthcookie' in d):
+ if args.verbose:
+ print("[SAML ] Got all required SAML headers, done.", file=stderr)
+ self.success = True
+ Gtk.main_quit()
def parse_args(args = None):
p = argparse.ArgumentParser()
- p.add_argument('-v','--verbose', default=0, action='count')
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')
x = p.add_mutually_exclusive_group()
- x.add_argument('-p','--portal', dest='portal', action='store_true', help='SAML auth to portal')
- x.add_argument('-g','--gateway', dest='portal', action='store_false', help='SAML auth to gateway (default)')
+ x.add_argument('-C', '--cookies', default='~/.gp-saml-gui-cookies',
+ help='Use and store cookies in this file (instead of default %(default)s)')
+ x.add_argument('-K', '--no-cookies', dest='cookies', action='store_const', const=None,
+ help="Don't use or store cookies at all")
+ x = p.add_mutually_exclusive_group()
+ x.add_argument('-p','--portal', dest='interface', action='store_const', const='portal', default='gateway',
+ help='SAML auth to portal')
+ x.add_argument('-g','--gateway', dest='interface', action='store_const', const='gateway',
+ help='SAML auth to gateway (default)')
g = p.add_argument_group('Client certificate')
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')
+ 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')
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.extra = dict(x.split('=', 1) for x in args.extra)
+ if args.cookies:
+ args.cookies = path.expanduser(args.cookies)
+
if args.cert and args.key:
args.cert, args.key = (args.cert, args.key), None
elif args.cert:
s.headers['User-Agent'] = 'PAN GlobalProtect'
s.cert = args.cert
+ if2prelogin = {'portal':'global-protect/prelogin.esp','gateway':'ssl-vpn/prelogin.esp'}
+ if2auth = {'portal':'global-protect/getconfig.esp','gateway':'ssl-vpn/login.esp'}
+
# query prelogin.esp and parse SAML bits
- endpoint = 'https://{}/{}/prelogin.esp'.format(args.server, ('global-protect' if args.portal else 'ssl-vpn'))
- res = s.post(endpoint, verify=args.verify, data=args.extra)
- xml = ET.fromstring(res.content)
- 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 (<saml-auth-method> or <saml-request> tags missing)")
- elif sam.text == 'POST':
- print("Got SAML POST content, opening browser...", file=stderr)
- html, uri = a2b_base64(sr.text).decode(), None
- elif sam.text == 'REDIRECT':
- print("Got SAML REDIRECT to %s, opening browser..." % sr.text, file=stderr)
- uri, html = sr.text, None
+ if args.uri:
+ sam, uri, html = 'URI', args.server, None
else:
- p.error("Unknown SAML method (%s)" % sam.text)
+ endpoint = 'https://{}/{}'.format(args.server, if2prelogin[args.interface])
+ 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)
+ except Exception as ex:
+ rootex = ex
+ while True:
+ if isinstance(rootex, ssl.SSLError):
+ break
+ elif not rootex.__cause__ and not rootex.__context__:
+ break
+ rootex = rootex.__cause__ or rootex.__context__
+ if isinstance(rootex, ssl.CertificateError):
+ p.error("SSL certificate error (try --no-verify to ignore): %s" % rootex)
+ elif isinstance(rootex, ssl.SSLError):
+ p.error("SSL error: %s" % rootex)
+ else:
+ 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))
+ 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 (<saml-auth-method> or <saml-request> tags missing)\n"
+ "Check in browser: {}".format(endpoint))
+ sam = sam.text
+ sr = a2b_base64(sr.text).decode()
+ if sam == 'POST':
+ html, uri = sr, None
+ elif sam == 'REDIRECT':
+ uri, html = sr, None
+ else:
+ p.error("Unknown SAML method (%s)" % sam)
+
+ # launch external browser for debugging
+ if args.external:
+ print("Got SAML %s, opening external browser for debugging..." % sam, file=stderr)
+ import webbrowser
+ if html:
+ uri = 'data:text/html;base64,' + b2a_base64(html.encode()).decode()
+ webbrowser.open(uri)
+ raise SystemExit
# spawn WebKit view to do SAML interactive login
- slv = SAMLLoginView(uri, html, verbose=args.verbose)
+ if args.verbose:
+ print("Got SAML %s, opening browser..." % sam, file=stderr)
+ slv = SAMLLoginView(uri, html, verbose=args.verbose, cookies=args.cookies, verify=args.verify)
Gtk.main()
+ if slv.closed:
+ print("Login window closed by user.", file=stderr)
+ p.exit(1)
if not slv.success:
- p.error('''Login window closed without producing SAML cookie''')
+ p.error('''Login window closed without producing SAML cookies.''')
# extract response and convert to OpenConnect command-line
un = slv.saml_result.get('saml-username')
- for cn in ('prelogin-cookie', 'portal-userauthcookie'):
+ server = slv.saml_result.get('server', args.server)
+
+ for cn, ifh in (('prelogin-cookie','gateway'), ('portal-userauthcookie','portal')):
cv = slv.saml_result.get(cn)
if cv:
break
else:
- cn = None
+ cn = ifh = None
+ p.error("Didn't get an expected cookie. Something went wrong.")
if args.verbose:
- print('''\n\nSAML response converted to OpenConnect command line invocation:\n''', file=stderr)
- print(''' echo {!r} |\n openconnect --protocol=gp --user={!r} --usergroup={}:{} --passwd-on-stdin {}\n'''.format(
- cv, un, ('portal' if args.portal else 'gateway'), cn, args.server), file=stderr)
+ # 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%'''
+ '''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),
+ 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('''\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("HOST={!r}\nUSER={!r}\nCOOKIE={!r}".format('https://%s/%s:%s' % (args.server, ('portal' if args.portal else 'gateway'), cn), un, cv))
+ varvals = {
+ 'HOST': quote('https://%s/%s:%s' % (server, if2auth[ifh], cn)),
+ 'USER': quote(un), 'COOKIE': quote(cv),
+ }
+ print('\n'.join('%s=%s' % pair for pair in varvals.items()))
projects / nu-vpn-proxy.git / blobdiff