summary refs log tree commit diff
path: root/synapse/rest/client/v1/login.py
blob: b4894497beed7d0182fda8e548421ffc9d83c6cd (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
# -*- coding: utf-8 -*-
# Copyright 2014, 2015 OpenMarket Ltd
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

from twisted.internet import defer

from synapse.api.errors import SynapseError
from synapse.types import UserID
from base import ClientV1RestServlet, client_path_pattern

import simplejson as json
import urllib

import logging
from saml2 import BINDING_HTTP_POST
from saml2 import config
from saml2.client import Saml2Client


logger = logging.getLogger(__name__)


class LoginRestServlet(ClientV1RestServlet):
    PATTERN = client_path_pattern("/login$")
    PASS_TYPE = "m.login.password"
    SAML2_TYPE = "m.login.saml2"

    def __init__(self, hs):
        super(LoginRestServlet, self).__init__(hs)
        self.idp_redirect_url = hs.config.saml2_config['idp_redirect_url']

    def on_GET(self, request):
        return (200, {"flows": [{"type": LoginRestServlet.PASS_TYPE},
                                {"type": LoginRestServlet.SAML2_TYPE}]})

    def on_OPTIONS(self, request):
        return (200, {})

    @defer.inlineCallbacks
    def on_POST(self, request):
        login_submission = _parse_json(request)
        try:
            if login_submission["type"] == LoginRestServlet.PASS_TYPE:
                result = yield self.do_password_login(login_submission)
                defer.returnValue(result)
            elif login_submission["type"] == LoginRestServlet.SAML2_TYPE:
                relay_state = ""
                if "relay_state" in login_submission:
                    relay_state = "&RelayState="+urllib.quote(
                                  login_submission["relay_state"])
                result = {
                    "uri": "%s%s" % (self.idp_redirect_url, relay_state)
                }
                defer.returnValue((200, result))
            else:
                raise SynapseError(400, "Bad login type.")
        except KeyError:
            raise SynapseError(400, "Missing JSON keys.")

    @defer.inlineCallbacks
    def do_password_login(self, login_submission):
        if not login_submission["user"].startswith('@'):
            login_submission["user"] = UserID.create(
                login_submission["user"], self.hs.hostname).to_string()

        handler = self.handlers.login_handler
        token = yield handler.login(
            user=login_submission["user"],
            password=login_submission["password"])

        result = {
            "user_id": login_submission["user"],  # may have changed
            "access_token": token,
            "home_server": self.hs.hostname,
        }

        defer.returnValue((200, result))


class LoginFallbackRestServlet(ClientV1RestServlet):
    PATTERN = client_path_pattern("/login/fallback$")

    def on_GET(self, request):
        # TODO(kegan): This should be returning some HTML which is capable of
        # hitting LoginRestServlet
        return (200, {})


class PasswordResetRestServlet(ClientV1RestServlet):
    PATTERN = client_path_pattern("/login/reset")

    @defer.inlineCallbacks
    def on_POST(self, request):
        reset_info = _parse_json(request)
        try:
            email = reset_info["email"]
            user_id = reset_info["user_id"]
            handler = self.handlers.login_handler
            yield handler.reset_password(user_id, email)
            # purposefully give no feedback to avoid people hammering different
            # combinations.
            defer.returnValue((200, {}))
        except KeyError:
            raise SynapseError(
                400,
                "Missing keys. Requires 'email' and 'user_id'."
            )


class SAML2RestServlet(ClientV1RestServlet):
    PATTERN = client_path_pattern("/login/saml2")

    def __init__(self, hs):
        super(SAML2RestServlet, self).__init__(hs)
        self.sp_config = hs.config.saml2_config['config_path']

    @defer.inlineCallbacks
    def on_POST(self, request):
        saml2_auth = None
        try:
            conf = config.SPConfig()
            conf.load_file(self.sp_config)
            SP = Saml2Client(conf)
            saml2_auth = SP.parse_authn_request_response(
                request.args['SAMLResponse'][0], BINDING_HTTP_POST)
        except Exception, e:        # Not authenticated
            logger.exception(e)
        if saml2_auth and saml2_auth.status_ok() and not saml2_auth.not_signed:
            username = saml2_auth.name_id.text
            handler = self.handlers.registration_handler
            (user_id, token) = yield handler.register_saml2(username)
            # Forward to the RelayState callback along with ava
            if 'RelayState' in request.args:
                request.redirect(urllib.unquote(
                                 request.args['RelayState'][0]) +
                                 '?status=authenticated&access_token=' +
                                 token + '&user_id=' + user_id + '&ava=' +
                                 urllib.quote(json.dumps(saml2_auth.ava)))
                request.finish()
                defer.returnValue(None)
            defer.returnValue((200, {"status": "authenticated",
                                     "user_id": user_id, "token": token,
                                     "ava": saml2_auth.ava}))
        elif 'RelayState' in request.args:
            request.redirect(urllib.unquote(
                             request.args['RelayState'][0]) +
                             '?status=not_authenticated')
            request.finish()
            defer.returnValue(None)
        defer.returnValue((200, {"status": "not_authenticated"}))


def _parse_json(request):
    try:
        content = json.loads(request.content.read())
        if type(content) != dict:
            raise SynapseError(400, "Content must be a JSON object.")
        return content
    except ValueError:
        raise SynapseError(400, "Content not JSON.")


def register_servlets(hs, http_server):
    LoginRestServlet(hs).register(http_server)
    SAML2RestServlet(hs).register(http_server)
    # TODO PasswordResetRestServlet(hs).register(http_server)