mirror of
https://github.com/janeczku/calibre-web
synced 2024-11-24 18:47:23 +00:00
1379 lines
56 KiB
Python
1379 lines
56 KiB
Python
#!/usr/bin/env python
|
|
#
|
|
# Copyright 2009 Facebook
|
|
#
|
|
# 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.
|
|
|
|
"""This module contains implementations of various third-party
|
|
authentication schemes.
|
|
|
|
All the classes in this file are class mixins designed to be used with
|
|
the `tornado.web.RequestHandler` class. They are used in two ways:
|
|
|
|
* On a login handler, use methods such as ``authenticate_redirect()``,
|
|
``authorize_redirect()``, and ``get_authenticated_user()`` to
|
|
establish the user's identity and store authentication tokens to your
|
|
database and/or cookies.
|
|
* In non-login handlers, use methods such as ``facebook_request()``
|
|
or ``twitter_request()`` to use the authentication tokens to make
|
|
requests to the respective services.
|
|
|
|
They all take slightly different arguments due to the fact all these
|
|
services implement authentication and authorization slightly differently.
|
|
See the individual service classes below for complete documentation.
|
|
|
|
Example usage for Google OpenID::
|
|
|
|
class GoogleLoginHandler(tornado.web.RequestHandler,
|
|
tornado.auth.GoogleMixin):
|
|
@tornado.web.asynchronous
|
|
@tornado.gen.coroutine
|
|
def get(self):
|
|
if self.get_argument("openid.mode", None):
|
|
user = yield self.get_authenticated_user()
|
|
# Save the user with e.g. set_secure_cookie()
|
|
else:
|
|
yield self.authenticate_redirect()
|
|
"""
|
|
|
|
from __future__ import absolute_import, division, print_function, with_statement
|
|
|
|
import base64
|
|
import binascii
|
|
import functools
|
|
import hashlib
|
|
import hmac
|
|
import time
|
|
import uuid
|
|
|
|
from tornado.concurrent import Future, chain_future, return_future
|
|
from tornado import gen
|
|
from tornado import httpclient
|
|
from tornado import escape
|
|
from tornado.httputil import url_concat
|
|
from tornado.log import gen_log
|
|
from tornado.util import bytes_type, u, unicode_type, ArgReplacer
|
|
|
|
try:
|
|
import urlparse # py2
|
|
except ImportError:
|
|
import urllib.parse as urlparse # py3
|
|
|
|
try:
|
|
import urllib.parse as urllib_parse # py3
|
|
except ImportError:
|
|
import urllib as urllib_parse # py2
|
|
|
|
|
|
class AuthError(Exception):
|
|
pass
|
|
|
|
|
|
def _auth_future_to_callback(callback, future):
|
|
try:
|
|
result = future.result()
|
|
except AuthError as e:
|
|
gen_log.warning(str(e))
|
|
result = None
|
|
callback(result)
|
|
|
|
|
|
def _auth_return_future(f):
|
|
"""Similar to tornado.concurrent.return_future, but uses the auth
|
|
module's legacy callback interface.
|
|
|
|
Note that when using this decorator the ``callback`` parameter
|
|
inside the function will actually be a future.
|
|
"""
|
|
replacer = ArgReplacer(f, 'callback')
|
|
|
|
@functools.wraps(f)
|
|
def wrapper(*args, **kwargs):
|
|
future = Future()
|
|
callback, args, kwargs = replacer.replace(future, args, kwargs)
|
|
if callback is not None:
|
|
future.add_done_callback(
|
|
functools.partial(_auth_future_to_callback, callback))
|
|
f(*args, **kwargs)
|
|
return future
|
|
return wrapper
|
|
|
|
|
|
class OpenIdMixin(object):
|
|
"""Abstract implementation of OpenID and Attribute Exchange.
|
|
|
|
See `GoogleMixin` below for a customized example (which also
|
|
includes OAuth support).
|
|
|
|
Class attributes:
|
|
|
|
* ``_OPENID_ENDPOINT``: the identity provider's URI.
|
|
"""
|
|
@return_future
|
|
def authenticate_redirect(self, callback_uri=None,
|
|
ax_attrs=["name", "email", "language", "username"],
|
|
callback=None):
|
|
"""Redirects to the authentication URL for this service.
|
|
|
|
After authentication, the service will redirect back to the given
|
|
callback URI with additional parameters including ``openid.mode``.
|
|
|
|
We request the given attributes for the authenticated user by
|
|
default (name, email, language, and username). If you don't need
|
|
all those attributes for your app, you can request fewer with
|
|
the ax_attrs keyword argument.
|
|
|
|
.. versionchanged:: 3.1
|
|
Returns a `.Future` and takes an optional callback. These are
|
|
not strictly necessary as this method is synchronous,
|
|
but they are supplied for consistency with
|
|
`OAuthMixin.authorize_redirect`.
|
|
"""
|
|
callback_uri = callback_uri or self.request.uri
|
|
args = self._openid_args(callback_uri, ax_attrs=ax_attrs)
|
|
self.redirect(self._OPENID_ENDPOINT + "?" + urllib_parse.urlencode(args))
|
|
callback()
|
|
|
|
@_auth_return_future
|
|
def get_authenticated_user(self, callback, http_client=None):
|
|
"""Fetches the authenticated user data upon redirect.
|
|
|
|
This method should be called by the handler that receives the
|
|
redirect from the `authenticate_redirect()` method (which is
|
|
often the same as the one that calls it; in that case you would
|
|
call `get_authenticated_user` if the ``openid.mode`` parameter
|
|
is present and `authenticate_redirect` if it is not).
|
|
|
|
The result of this method will generally be used to set a cookie.
|
|
"""
|
|
# Verify the OpenID response via direct request to the OP
|
|
args = dict((k, v[-1]) for k, v in self.request.arguments.items())
|
|
args["openid.mode"] = u("check_authentication")
|
|
url = self._OPENID_ENDPOINT
|
|
if http_client is None:
|
|
http_client = self.get_auth_http_client()
|
|
http_client.fetch(url, self.async_callback(
|
|
self._on_authentication_verified, callback),
|
|
method="POST", body=urllib_parse.urlencode(args))
|
|
|
|
def _openid_args(self, callback_uri, ax_attrs=[], oauth_scope=None):
|
|
url = urlparse.urljoin(self.request.full_url(), callback_uri)
|
|
args = {
|
|
"openid.ns": "http://specs.openid.net/auth/2.0",
|
|
"openid.claimed_id":
|
|
"http://specs.openid.net/auth/2.0/identifier_select",
|
|
"openid.identity":
|
|
"http://specs.openid.net/auth/2.0/identifier_select",
|
|
"openid.return_to": url,
|
|
"openid.realm": urlparse.urljoin(url, '/'),
|
|
"openid.mode": "checkid_setup",
|
|
}
|
|
if ax_attrs:
|
|
args.update({
|
|
"openid.ns.ax": "http://openid.net/srv/ax/1.0",
|
|
"openid.ax.mode": "fetch_request",
|
|
})
|
|
ax_attrs = set(ax_attrs)
|
|
required = []
|
|
if "name" in ax_attrs:
|
|
ax_attrs -= set(["name", "firstname", "fullname", "lastname"])
|
|
required += ["firstname", "fullname", "lastname"]
|
|
args.update({
|
|
"openid.ax.type.firstname":
|
|
"http://axschema.org/namePerson/first",
|
|
"openid.ax.type.fullname":
|
|
"http://axschema.org/namePerson",
|
|
"openid.ax.type.lastname":
|
|
"http://axschema.org/namePerson/last",
|
|
})
|
|
known_attrs = {
|
|
"email": "http://axschema.org/contact/email",
|
|
"language": "http://axschema.org/pref/language",
|
|
"username": "http://axschema.org/namePerson/friendly",
|
|
}
|
|
for name in ax_attrs:
|
|
args["openid.ax.type." + name] = known_attrs[name]
|
|
required.append(name)
|
|
args["openid.ax.required"] = ",".join(required)
|
|
if oauth_scope:
|
|
args.update({
|
|
"openid.ns.oauth":
|
|
"http://specs.openid.net/extensions/oauth/1.0",
|
|
"openid.oauth.consumer": self.request.host.split(":")[0],
|
|
"openid.oauth.scope": oauth_scope,
|
|
})
|
|
return args
|
|
|
|
def _on_authentication_verified(self, future, response):
|
|
if response.error or b"is_valid:true" not in response.body:
|
|
future.set_exception(AuthError(
|
|
"Invalid OpenID response: %s" % (response.error or
|
|
response.body)))
|
|
return
|
|
|
|
# Make sure we got back at least an email from attribute exchange
|
|
ax_ns = None
|
|
for name in self.request.arguments:
|
|
if name.startswith("openid.ns.") and \
|
|
self.get_argument(name) == u("http://openid.net/srv/ax/1.0"):
|
|
ax_ns = name[10:]
|
|
break
|
|
|
|
def get_ax_arg(uri):
|
|
if not ax_ns:
|
|
return u("")
|
|
prefix = "openid." + ax_ns + ".type."
|
|
ax_name = None
|
|
for name in self.request.arguments.keys():
|
|
if self.get_argument(name) == uri and name.startswith(prefix):
|
|
part = name[len(prefix):]
|
|
ax_name = "openid." + ax_ns + ".value." + part
|
|
break
|
|
if not ax_name:
|
|
return u("")
|
|
return self.get_argument(ax_name, u(""))
|
|
|
|
email = get_ax_arg("http://axschema.org/contact/email")
|
|
name = get_ax_arg("http://axschema.org/namePerson")
|
|
first_name = get_ax_arg("http://axschema.org/namePerson/first")
|
|
last_name = get_ax_arg("http://axschema.org/namePerson/last")
|
|
username = get_ax_arg("http://axschema.org/namePerson/friendly")
|
|
locale = get_ax_arg("http://axschema.org/pref/language").lower()
|
|
user = dict()
|
|
name_parts = []
|
|
if first_name:
|
|
user["first_name"] = first_name
|
|
name_parts.append(first_name)
|
|
if last_name:
|
|
user["last_name"] = last_name
|
|
name_parts.append(last_name)
|
|
if name:
|
|
user["name"] = name
|
|
elif name_parts:
|
|
user["name"] = u(" ").join(name_parts)
|
|
elif email:
|
|
user["name"] = email.split("@")[0]
|
|
if email:
|
|
user["email"] = email
|
|
if locale:
|
|
user["locale"] = locale
|
|
if username:
|
|
user["username"] = username
|
|
claimed_id = self.get_argument("openid.claimed_id", None)
|
|
if claimed_id:
|
|
user["claimed_id"] = claimed_id
|
|
future.set_result(user)
|
|
|
|
def get_auth_http_client(self):
|
|
"""Returns the `.AsyncHTTPClient` instance to be used for auth requests.
|
|
|
|
May be overridden by subclasses to use an HTTP client other than
|
|
the default.
|
|
"""
|
|
return httpclient.AsyncHTTPClient()
|
|
|
|
|
|
class OAuthMixin(object):
|
|
"""Abstract implementation of OAuth 1.0 and 1.0a.
|
|
|
|
See `TwitterMixin` and `FriendFeedMixin` below for example implementations,
|
|
or `GoogleMixin` for an OAuth/OpenID hybrid.
|
|
|
|
Class attributes:
|
|
|
|
* ``_OAUTH_AUTHORIZE_URL``: The service's OAuth authorization url.
|
|
* ``_OAUTH_ACCESS_TOKEN_URL``: The service's OAuth access token url.
|
|
* ``_OAUTH_VERSION``: May be either "1.0" or "1.0a".
|
|
* ``_OAUTH_NO_CALLBACKS``: Set this to True if the service requires
|
|
advance registration of callbacks.
|
|
|
|
Subclasses must also override the `_oauth_get_user_future` and
|
|
`_oauth_consumer_token` methods.
|
|
"""
|
|
@return_future
|
|
def authorize_redirect(self, callback_uri=None, extra_params=None,
|
|
http_client=None, callback=None):
|
|
"""Redirects the user to obtain OAuth authorization for this service.
|
|
|
|
The ``callback_uri`` may be omitted if you have previously
|
|
registered a callback URI with the third-party service. For
|
|
some sevices (including Friendfeed), you must use a
|
|
previously-registered callback URI and cannot specify a
|
|
callback via this method.
|
|
|
|
This method sets a cookie called ``_oauth_request_token`` which is
|
|
subsequently used (and cleared) in `get_authenticated_user` for
|
|
security purposes.
|
|
|
|
Note that this method is asynchronous, although it calls
|
|
`.RequestHandler.finish` for you so it may not be necessary
|
|
to pass a callback or use the `.Future` it returns. However,
|
|
if this method is called from a function decorated with
|
|
`.gen.coroutine`, you must call it with ``yield`` to keep the
|
|
response from being closed prematurely.
|
|
|
|
.. versionchanged:: 3.1
|
|
Now returns a `.Future` and takes an optional callback, for
|
|
compatibility with `.gen.coroutine`.
|
|
"""
|
|
if callback_uri and getattr(self, "_OAUTH_NO_CALLBACKS", False):
|
|
raise Exception("This service does not support oauth_callback")
|
|
if http_client is None:
|
|
http_client = self.get_auth_http_client()
|
|
if getattr(self, "_OAUTH_VERSION", "1.0a") == "1.0a":
|
|
http_client.fetch(
|
|
self._oauth_request_token_url(callback_uri=callback_uri,
|
|
extra_params=extra_params),
|
|
self.async_callback(
|
|
self._on_request_token,
|
|
self._OAUTH_AUTHORIZE_URL,
|
|
callback_uri,
|
|
callback))
|
|
else:
|
|
http_client.fetch(
|
|
self._oauth_request_token_url(),
|
|
self.async_callback(
|
|
self._on_request_token, self._OAUTH_AUTHORIZE_URL,
|
|
callback_uri,
|
|
callback))
|
|
|
|
@_auth_return_future
|
|
def get_authenticated_user(self, callback, http_client=None):
|
|
"""Gets the OAuth authorized user and access token.
|
|
|
|
This method should be called from the handler for your
|
|
OAuth callback URL to complete the registration process. We run the
|
|
callback with the authenticated user dictionary. This dictionary
|
|
will contain an ``access_key`` which can be used to make authorized
|
|
requests to this service on behalf of the user. The dictionary will
|
|
also contain other fields such as ``name``, depending on the service
|
|
used.
|
|
"""
|
|
future = callback
|
|
request_key = escape.utf8(self.get_argument("oauth_token"))
|
|
oauth_verifier = self.get_argument("oauth_verifier", None)
|
|
request_cookie = self.get_cookie("_oauth_request_token")
|
|
if not request_cookie:
|
|
future.set_exception(AuthError(
|
|
"Missing OAuth request token cookie"))
|
|
return
|
|
self.clear_cookie("_oauth_request_token")
|
|
cookie_key, cookie_secret = [base64.b64decode(escape.utf8(i)) for i in request_cookie.split("|")]
|
|
if cookie_key != request_key:
|
|
future.set_exception(AuthError(
|
|
"Request token does not match cookie"))
|
|
return
|
|
token = dict(key=cookie_key, secret=cookie_secret)
|
|
if oauth_verifier:
|
|
token["verifier"] = oauth_verifier
|
|
if http_client is None:
|
|
http_client = self.get_auth_http_client()
|
|
http_client.fetch(self._oauth_access_token_url(token),
|
|
self.async_callback(self._on_access_token, callback))
|
|
|
|
def _oauth_request_token_url(self, callback_uri=None, extra_params=None):
|
|
consumer_token = self._oauth_consumer_token()
|
|
url = self._OAUTH_REQUEST_TOKEN_URL
|
|
args = dict(
|
|
oauth_consumer_key=escape.to_basestring(consumer_token["key"]),
|
|
oauth_signature_method="HMAC-SHA1",
|
|
oauth_timestamp=str(int(time.time())),
|
|
oauth_nonce=escape.to_basestring(binascii.b2a_hex(uuid.uuid4().bytes)),
|
|
oauth_version="1.0",
|
|
)
|
|
if getattr(self, "_OAUTH_VERSION", "1.0a") == "1.0a":
|
|
if callback_uri == "oob":
|
|
args["oauth_callback"] = "oob"
|
|
elif callback_uri:
|
|
args["oauth_callback"] = urlparse.urljoin(
|
|
self.request.full_url(), callback_uri)
|
|
if extra_params:
|
|
args.update(extra_params)
|
|
signature = _oauth10a_signature(consumer_token, "GET", url, args)
|
|
else:
|
|
signature = _oauth_signature(consumer_token, "GET", url, args)
|
|
|
|
args["oauth_signature"] = signature
|
|
return url + "?" + urllib_parse.urlencode(args)
|
|
|
|
def _on_request_token(self, authorize_url, callback_uri, callback,
|
|
response):
|
|
if response.error:
|
|
raise Exception("Could not get request token: %s" % response.error)
|
|
request_token = _oauth_parse_response(response.body)
|
|
data = (base64.b64encode(escape.utf8(request_token["key"])) + b"|" +
|
|
base64.b64encode(escape.utf8(request_token["secret"])))
|
|
self.set_cookie("_oauth_request_token", data)
|
|
args = dict(oauth_token=request_token["key"])
|
|
if callback_uri == "oob":
|
|
self.finish(authorize_url + "?" + urllib_parse.urlencode(args))
|
|
callback()
|
|
return
|
|
elif callback_uri:
|
|
args["oauth_callback"] = urlparse.urljoin(
|
|
self.request.full_url(), callback_uri)
|
|
self.redirect(authorize_url + "?" + urllib_parse.urlencode(args))
|
|
callback()
|
|
|
|
def _oauth_access_token_url(self, request_token):
|
|
consumer_token = self._oauth_consumer_token()
|
|
url = self._OAUTH_ACCESS_TOKEN_URL
|
|
args = dict(
|
|
oauth_consumer_key=escape.to_basestring(consumer_token["key"]),
|
|
oauth_token=escape.to_basestring(request_token["key"]),
|
|
oauth_signature_method="HMAC-SHA1",
|
|
oauth_timestamp=str(int(time.time())),
|
|
oauth_nonce=escape.to_basestring(binascii.b2a_hex(uuid.uuid4().bytes)),
|
|
oauth_version="1.0",
|
|
)
|
|
if "verifier" in request_token:
|
|
args["oauth_verifier"] = request_token["verifier"]
|
|
|
|
if getattr(self, "_OAUTH_VERSION", "1.0a") == "1.0a":
|
|
signature = _oauth10a_signature(consumer_token, "GET", url, args,
|
|
request_token)
|
|
else:
|
|
signature = _oauth_signature(consumer_token, "GET", url, args,
|
|
request_token)
|
|
|
|
args["oauth_signature"] = signature
|
|
return url + "?" + urllib_parse.urlencode(args)
|
|
|
|
def _on_access_token(self, future, response):
|
|
if response.error:
|
|
future.set_exception(AuthError("Could not fetch access token"))
|
|
return
|
|
|
|
access_token = _oauth_parse_response(response.body)
|
|
self._oauth_get_user_future(access_token).add_done_callback(
|
|
self.async_callback(self._on_oauth_get_user, access_token, future))
|
|
|
|
def _oauth_consumer_token(self):
|
|
"""Subclasses must override this to return their OAuth consumer keys.
|
|
|
|
The return value should be a `dict` with keys ``key`` and ``secret``.
|
|
"""
|
|
raise NotImplementedError()
|
|
|
|
@return_future
|
|
def _oauth_get_user_future(self, access_token, callback):
|
|
"""Subclasses must override this to get basic information about the
|
|
user.
|
|
|
|
Should return a `.Future` whose result is a dictionary
|
|
containing information about the user, which may have been
|
|
retrieved by using ``access_token`` to make a request to the
|
|
service.
|
|
|
|
The access token will be added to the returned dictionary to make
|
|
the result of `get_authenticated_user`.
|
|
|
|
For backwards compatibility, the callback-based ``_oauth_get_user``
|
|
method is also supported.
|
|
"""
|
|
# By default, call the old-style _oauth_get_user, but new code
|
|
# should override this method instead.
|
|
self._oauth_get_user(access_token, callback)
|
|
|
|
def _oauth_get_user(self, access_token, callback):
|
|
raise NotImplementedError()
|
|
|
|
def _on_oauth_get_user(self, access_token, future, user_future):
|
|
if user_future.exception() is not None:
|
|
future.set_exception(user_future.exception())
|
|
return
|
|
user = user_future.result()
|
|
if not user:
|
|
future.set_exception(AuthError("Error getting user"))
|
|
return
|
|
user["access_token"] = access_token
|
|
future.set_result(user)
|
|
|
|
def _oauth_request_parameters(self, url, access_token, parameters={},
|
|
method="GET"):
|
|
"""Returns the OAuth parameters as a dict for the given request.
|
|
|
|
parameters should include all POST arguments and query string arguments
|
|
that will be sent with the request.
|
|
"""
|
|
consumer_token = self._oauth_consumer_token()
|
|
base_args = dict(
|
|
oauth_consumer_key=escape.to_basestring(consumer_token["key"]),
|
|
oauth_token=escape.to_basestring(access_token["key"]),
|
|
oauth_signature_method="HMAC-SHA1",
|
|
oauth_timestamp=str(int(time.time())),
|
|
oauth_nonce=escape.to_basestring(binascii.b2a_hex(uuid.uuid4().bytes)),
|
|
oauth_version="1.0",
|
|
)
|
|
args = {}
|
|
args.update(base_args)
|
|
args.update(parameters)
|
|
if getattr(self, "_OAUTH_VERSION", "1.0a") == "1.0a":
|
|
signature = _oauth10a_signature(consumer_token, method, url, args,
|
|
access_token)
|
|
else:
|
|
signature = _oauth_signature(consumer_token, method, url, args,
|
|
access_token)
|
|
base_args["oauth_signature"] = escape.to_basestring(signature)
|
|
return base_args
|
|
|
|
def get_auth_http_client(self):
|
|
"""Returns the `.AsyncHTTPClient` instance to be used for auth requests.
|
|
|
|
May be overridden by subclasses to use an HTTP client other than
|
|
the default.
|
|
"""
|
|
return httpclient.AsyncHTTPClient()
|
|
|
|
|
|
class OAuth2Mixin(object):
|
|
"""Abstract implementation of OAuth 2.0.
|
|
|
|
See `FacebookGraphMixin` below for an example implementation.
|
|
|
|
Class attributes:
|
|
|
|
* ``_OAUTH_AUTHORIZE_URL``: The service's authorization url.
|
|
* ``_OAUTH_ACCESS_TOKEN_URL``: The service's access token url.
|
|
"""
|
|
@return_future
|
|
def authorize_redirect(self, redirect_uri=None, client_id=None,
|
|
client_secret=None, extra_params=None,
|
|
callback=None):
|
|
"""Redirects the user to obtain OAuth authorization for this service.
|
|
|
|
Some providers require that you register a redirect URL with
|
|
your application instead of passing one via this method. You
|
|
should call this method to log the user in, and then call
|
|
``get_authenticated_user`` in the handler for your
|
|
redirect URL to complete the authorization process.
|
|
|
|
.. versionchanged:: 3.1
|
|
Returns a `.Future` and takes an optional callback. These are
|
|
not strictly necessary as this method is synchronous,
|
|
but they are supplied for consistency with
|
|
`OAuthMixin.authorize_redirect`.
|
|
"""
|
|
args = {
|
|
"redirect_uri": redirect_uri,
|
|
"client_id": client_id
|
|
}
|
|
if extra_params:
|
|
args.update(extra_params)
|
|
self.redirect(
|
|
url_concat(self._OAUTH_AUTHORIZE_URL, args))
|
|
callback()
|
|
|
|
def _oauth_request_token_url(self, redirect_uri=None, client_id=None,
|
|
client_secret=None, code=None,
|
|
extra_params=None):
|
|
url = self._OAUTH_ACCESS_TOKEN_URL
|
|
args = dict(
|
|
redirect_uri=redirect_uri,
|
|
code=code,
|
|
client_id=client_id,
|
|
client_secret=client_secret,
|
|
)
|
|
if extra_params:
|
|
args.update(extra_params)
|
|
return url_concat(url, args)
|
|
|
|
|
|
class TwitterMixin(OAuthMixin):
|
|
"""Twitter OAuth authentication.
|
|
|
|
To authenticate with Twitter, register your application with
|
|
Twitter at http://twitter.com/apps. Then copy your Consumer Key
|
|
and Consumer Secret to the application
|
|
`~tornado.web.Application.settings` ``twitter_consumer_key`` and
|
|
``twitter_consumer_secret``. Use this mixin on the handler for the
|
|
URL you registered as your application's callback URL.
|
|
|
|
When your application is set up, you can use this mixin like this
|
|
to authenticate the user with Twitter and get access to their stream::
|
|
|
|
class TwitterLoginHandler(tornado.web.RequestHandler,
|
|
tornado.auth.TwitterMixin):
|
|
@tornado.web.asynchronous
|
|
@tornado.gen.coroutine
|
|
def get(self):
|
|
if self.get_argument("oauth_token", None):
|
|
user = yield self.get_authenticated_user()
|
|
# Save the user using e.g. set_secure_cookie()
|
|
else:
|
|
yield self.authorize_redirect()
|
|
|
|
The user object returned by `~OAuthMixin.get_authenticated_user`
|
|
includes the attributes ``username``, ``name``, ``access_token``,
|
|
and all of the custom Twitter user attributes described at
|
|
https://dev.twitter.com/docs/api/1.1/get/users/show
|
|
"""
|
|
_OAUTH_REQUEST_TOKEN_URL = "https://api.twitter.com/oauth/request_token"
|
|
_OAUTH_ACCESS_TOKEN_URL = "https://api.twitter.com/oauth/access_token"
|
|
_OAUTH_AUTHORIZE_URL = "https://api.twitter.com/oauth/authorize"
|
|
_OAUTH_AUTHENTICATE_URL = "https://api.twitter.com/oauth/authenticate"
|
|
_OAUTH_NO_CALLBACKS = False
|
|
_TWITTER_BASE_URL = "https://api.twitter.com/1.1"
|
|
|
|
@return_future
|
|
def authenticate_redirect(self, callback_uri=None, callback=None):
|
|
"""Just like `~OAuthMixin.authorize_redirect`, but
|
|
auto-redirects if authorized.
|
|
|
|
This is generally the right interface to use if you are using
|
|
Twitter for single-sign on.
|
|
|
|
.. versionchanged:: 3.1
|
|
Now returns a `.Future` and takes an optional callback, for
|
|
compatibility with `.gen.coroutine`.
|
|
"""
|
|
http = self.get_auth_http_client()
|
|
http.fetch(self._oauth_request_token_url(callback_uri=callback_uri),
|
|
self.async_callback(
|
|
self._on_request_token, self._OAUTH_AUTHENTICATE_URL,
|
|
None, callback))
|
|
|
|
@_auth_return_future
|
|
def twitter_request(self, path, callback=None, access_token=None,
|
|
post_args=None, **args):
|
|
"""Fetches the given API path, e.g., ``statuses/user_timeline/btaylor``
|
|
|
|
The path should not include the format or API version number.
|
|
(we automatically use JSON format and API version 1).
|
|
|
|
If the request is a POST, ``post_args`` should be provided. Query
|
|
string arguments should be given as keyword arguments.
|
|
|
|
All the Twitter methods are documented at http://dev.twitter.com/
|
|
|
|
Many methods require an OAuth access token which you can
|
|
obtain through `~OAuthMixin.authorize_redirect` and
|
|
`~OAuthMixin.get_authenticated_user`. The user returned through that
|
|
process includes an 'access_token' attribute that can be used
|
|
to make authenticated requests via this method. Example
|
|
usage::
|
|
|
|
class MainHandler(tornado.web.RequestHandler,
|
|
tornado.auth.TwitterMixin):
|
|
@tornado.web.authenticated
|
|
@tornado.web.asynchronous
|
|
@tornado.gen.coroutine
|
|
def get(self):
|
|
new_entry = yield self.twitter_request(
|
|
"/statuses/update",
|
|
post_args={"status": "Testing Tornado Web Server"},
|
|
access_token=self.current_user["access_token"])
|
|
if not new_entry:
|
|
# Call failed; perhaps missing permission?
|
|
yield self.authorize_redirect()
|
|
return
|
|
self.finish("Posted a message!")
|
|
|
|
"""
|
|
if path.startswith('http:') or path.startswith('https:'):
|
|
# Raw urls are useful for e.g. search which doesn't follow the
|
|
# usual pattern: http://search.twitter.com/search.json
|
|
url = path
|
|
else:
|
|
url = self._TWITTER_BASE_URL + path + ".json"
|
|
# Add the OAuth resource request signature if we have credentials
|
|
if access_token:
|
|
all_args = {}
|
|
all_args.update(args)
|
|
all_args.update(post_args or {})
|
|
method = "POST" if post_args is not None else "GET"
|
|
oauth = self._oauth_request_parameters(
|
|
url, access_token, all_args, method=method)
|
|
args.update(oauth)
|
|
if args:
|
|
url += "?" + urllib_parse.urlencode(args)
|
|
http = self.get_auth_http_client()
|
|
http_callback = self.async_callback(self._on_twitter_request, callback)
|
|
if post_args is not None:
|
|
http.fetch(url, method="POST", body=urllib_parse.urlencode(post_args),
|
|
callback=http_callback)
|
|
else:
|
|
http.fetch(url, callback=http_callback)
|
|
|
|
def _on_twitter_request(self, future, response):
|
|
if response.error:
|
|
future.set_exception(AuthError(
|
|
"Error response %s fetching %s" % (response.error,
|
|
response.request.url)))
|
|
return
|
|
future.set_result(escape.json_decode(response.body))
|
|
|
|
def _oauth_consumer_token(self):
|
|
self.require_setting("twitter_consumer_key", "Twitter OAuth")
|
|
self.require_setting("twitter_consumer_secret", "Twitter OAuth")
|
|
return dict(
|
|
key=self.settings["twitter_consumer_key"],
|
|
secret=self.settings["twitter_consumer_secret"])
|
|
|
|
@gen.coroutine
|
|
def _oauth_get_user_future(self, access_token):
|
|
user = yield self.twitter_request(
|
|
"/account/verify_credentials",
|
|
access_token=access_token)
|
|
if user:
|
|
user["username"] = user["screen_name"]
|
|
raise gen.Return(user)
|
|
|
|
|
|
class FriendFeedMixin(OAuthMixin):
|
|
"""FriendFeed OAuth authentication.
|
|
|
|
To authenticate with FriendFeed, register your application with
|
|
FriendFeed at http://friendfeed.com/api/applications. Then copy
|
|
your Consumer Key and Consumer Secret to the application
|
|
`~tornado.web.Application.settings` ``friendfeed_consumer_key``
|
|
and ``friendfeed_consumer_secret``. Use this mixin on the handler
|
|
for the URL you registered as your application's Callback URL.
|
|
|
|
When your application is set up, you can use this mixin like this
|
|
to authenticate the user with FriendFeed and get access to their feed::
|
|
|
|
class FriendFeedLoginHandler(tornado.web.RequestHandler,
|
|
tornado.auth.FriendFeedMixin):
|
|
@tornado.web.asynchronous
|
|
@tornado.gen.coroutine
|
|
def get(self):
|
|
if self.get_argument("oauth_token", None):
|
|
user = yield self.get_authenticated_user()
|
|
# Save the user using e.g. set_secure_cookie()
|
|
else:
|
|
yield self.authorize_redirect()
|
|
|
|
The user object returned by `~OAuthMixin.get_authenticated_user()` includes the
|
|
attributes ``username``, ``name``, and ``description`` in addition to
|
|
``access_token``. You should save the access token with the user;
|
|
it is required to make requests on behalf of the user later with
|
|
`friendfeed_request()`.
|
|
"""
|
|
_OAUTH_VERSION = "1.0"
|
|
_OAUTH_REQUEST_TOKEN_URL = "https://friendfeed.com/account/oauth/request_token"
|
|
_OAUTH_ACCESS_TOKEN_URL = "https://friendfeed.com/account/oauth/access_token"
|
|
_OAUTH_AUTHORIZE_URL = "https://friendfeed.com/account/oauth/authorize"
|
|
_OAUTH_NO_CALLBACKS = True
|
|
_OAUTH_VERSION = "1.0"
|
|
|
|
@_auth_return_future
|
|
def friendfeed_request(self, path, callback, access_token=None,
|
|
post_args=None, **args):
|
|
"""Fetches the given relative API path, e.g., "/bret/friends"
|
|
|
|
If the request is a POST, ``post_args`` should be provided. Query
|
|
string arguments should be given as keyword arguments.
|
|
|
|
All the FriendFeed methods are documented at
|
|
http://friendfeed.com/api/documentation.
|
|
|
|
Many methods require an OAuth access token which you can
|
|
obtain through `~OAuthMixin.authorize_redirect` and
|
|
`~OAuthMixin.get_authenticated_user`. The user returned
|
|
through that process includes an ``access_token`` attribute that
|
|
can be used to make authenticated requests via this
|
|
method.
|
|
|
|
Example usage::
|
|
|
|
class MainHandler(tornado.web.RequestHandler,
|
|
tornado.auth.FriendFeedMixin):
|
|
@tornado.web.authenticated
|
|
@tornado.web.asynchronous
|
|
@tornado.gen.coroutine
|
|
def get(self):
|
|
new_entry = yield self.friendfeed_request(
|
|
"/entry",
|
|
post_args={"body": "Testing Tornado Web Server"},
|
|
access_token=self.current_user["access_token"])
|
|
|
|
if not new_entry:
|
|
# Call failed; perhaps missing permission?
|
|
yield self.authorize_redirect()
|
|
return
|
|
self.finish("Posted a message!")
|
|
|
|
"""
|
|
# Add the OAuth resource request signature if we have credentials
|
|
url = "http://friendfeed-api.com/v2" + path
|
|
if access_token:
|
|
all_args = {}
|
|
all_args.update(args)
|
|
all_args.update(post_args or {})
|
|
method = "POST" if post_args is not None else "GET"
|
|
oauth = self._oauth_request_parameters(
|
|
url, access_token, all_args, method=method)
|
|
args.update(oauth)
|
|
if args:
|
|
url += "?" + urllib_parse.urlencode(args)
|
|
callback = self.async_callback(self._on_friendfeed_request, callback)
|
|
http = self.get_auth_http_client()
|
|
if post_args is not None:
|
|
http.fetch(url, method="POST", body=urllib_parse.urlencode(post_args),
|
|
callback=callback)
|
|
else:
|
|
http.fetch(url, callback=callback)
|
|
|
|
def _on_friendfeed_request(self, future, response):
|
|
if response.error:
|
|
future.set_exception(AuthError(
|
|
"Error response %s fetching %s" % (response.error,
|
|
response.request.url)))
|
|
return
|
|
future.set_result(escape.json_decode(response.body))
|
|
|
|
def _oauth_consumer_token(self):
|
|
self.require_setting("friendfeed_consumer_key", "FriendFeed OAuth")
|
|
self.require_setting("friendfeed_consumer_secret", "FriendFeed OAuth")
|
|
return dict(
|
|
key=self.settings["friendfeed_consumer_key"],
|
|
secret=self.settings["friendfeed_consumer_secret"])
|
|
|
|
@gen.coroutine
|
|
def _oauth_get_user_future(self, access_token, callback):
|
|
user = yield self.friendfeed_request(
|
|
"/feedinfo/" + access_token["username"],
|
|
include="id,name,description", access_token=access_token)
|
|
if user:
|
|
user["username"] = user["id"]
|
|
callback(user)
|
|
|
|
def _parse_user_response(self, callback, user):
|
|
if user:
|
|
user["username"] = user["id"]
|
|
callback(user)
|
|
|
|
|
|
class GoogleMixin(OpenIdMixin, OAuthMixin):
|
|
"""Google Open ID / OAuth authentication.
|
|
|
|
No application registration is necessary to use Google for
|
|
authentication or to access Google resources on behalf of a user.
|
|
|
|
Google implements both OpenID and OAuth in a hybrid mode. If you
|
|
just need the user's identity, use
|
|
`~OpenIdMixin.authenticate_redirect`. If you need to make
|
|
requests to Google on behalf of the user, use
|
|
`authorize_redirect`. On return, parse the response with
|
|
`~OpenIdMixin.get_authenticated_user`. We send a dict containing
|
|
the values for the user, including ``email``, ``name``, and
|
|
``locale``.
|
|
|
|
Example usage::
|
|
|
|
class GoogleLoginHandler(tornado.web.RequestHandler,
|
|
tornado.auth.GoogleMixin):
|
|
@tornado.web.asynchronous
|
|
@tornado.gen.coroutine
|
|
def get(self):
|
|
if self.get_argument("openid.mode", None):
|
|
user = yield self.get_authenticated_user()
|
|
# Save the user with e.g. set_secure_cookie()
|
|
else:
|
|
yield self.authenticate_redirect()
|
|
"""
|
|
_OPENID_ENDPOINT = "https://www.google.com/accounts/o8/ud"
|
|
_OAUTH_ACCESS_TOKEN_URL = "https://www.google.com/accounts/OAuthGetAccessToken"
|
|
|
|
@return_future
|
|
def authorize_redirect(self, oauth_scope, callback_uri=None,
|
|
ax_attrs=["name", "email", "language", "username"],
|
|
callback=None):
|
|
"""Authenticates and authorizes for the given Google resource.
|
|
|
|
Some of the available resources which can be used in the ``oauth_scope``
|
|
argument are:
|
|
|
|
* Gmail Contacts - http://www.google.com/m8/feeds/
|
|
* Calendar - http://www.google.com/calendar/feeds/
|
|
* Finance - http://finance.google.com/finance/feeds/
|
|
|
|
You can authorize multiple resources by separating the resource
|
|
URLs with a space.
|
|
|
|
.. versionchanged:: 3.1
|
|
Returns a `.Future` and takes an optional callback. These are
|
|
not strictly necessary as this method is synchronous,
|
|
but they are supplied for consistency with
|
|
`OAuthMixin.authorize_redirect`.
|
|
"""
|
|
callback_uri = callback_uri or self.request.uri
|
|
args = self._openid_args(callback_uri, ax_attrs=ax_attrs,
|
|
oauth_scope=oauth_scope)
|
|
self.redirect(self._OPENID_ENDPOINT + "?" + urllib_parse.urlencode(args))
|
|
callback()
|
|
|
|
@_auth_return_future
|
|
def get_authenticated_user(self, callback):
|
|
"""Fetches the authenticated user data upon redirect."""
|
|
# Look to see if we are doing combined OpenID/OAuth
|
|
oauth_ns = ""
|
|
for name, values in self.request.arguments.items():
|
|
if name.startswith("openid.ns.") and \
|
|
values[-1] == b"http://specs.openid.net/extensions/oauth/1.0":
|
|
oauth_ns = name[10:]
|
|
break
|
|
token = self.get_argument("openid." + oauth_ns + ".request_token", "")
|
|
if token:
|
|
http = self.get_auth_http_client()
|
|
token = dict(key=token, secret="")
|
|
http.fetch(self._oauth_access_token_url(token),
|
|
self.async_callback(self._on_access_token, callback))
|
|
else:
|
|
chain_future(OpenIdMixin.get_authenticated_user(self),
|
|
callback)
|
|
|
|
def _oauth_consumer_token(self):
|
|
self.require_setting("google_consumer_key", "Google OAuth")
|
|
self.require_setting("google_consumer_secret", "Google OAuth")
|
|
return dict(
|
|
key=self.settings["google_consumer_key"],
|
|
secret=self.settings["google_consumer_secret"])
|
|
|
|
def _oauth_get_user_future(self, access_token):
|
|
return OpenIdMixin.get_authenticated_user(self)
|
|
|
|
|
|
class FacebookMixin(object):
|
|
"""Facebook Connect authentication.
|
|
|
|
*Deprecated:* New applications should use `FacebookGraphMixin`
|
|
below instead of this class. This class does not support the
|
|
Future-based interface seen on other classes in this module.
|
|
|
|
To authenticate with Facebook, register your application with
|
|
Facebook at http://www.facebook.com/developers/apps.php. Then
|
|
copy your API Key and Application Secret to the application settings
|
|
``facebook_api_key`` and ``facebook_secret``.
|
|
|
|
When your application is set up, you can use this mixin like this
|
|
to authenticate the user with Facebook::
|
|
|
|
class FacebookHandler(tornado.web.RequestHandler,
|
|
tornado.auth.FacebookMixin):
|
|
@tornado.web.asynchronous
|
|
def get(self):
|
|
if self.get_argument("session", None):
|
|
self.get_authenticated_user(self.async_callback(self._on_auth))
|
|
return
|
|
yield self.authenticate_redirect()
|
|
|
|
def _on_auth(self, user):
|
|
if not user:
|
|
raise tornado.web.HTTPError(500, "Facebook auth failed")
|
|
# Save the user using, e.g., set_secure_cookie()
|
|
|
|
The user object returned by `get_authenticated_user` includes the
|
|
attributes ``facebook_uid`` and ``name`` in addition to session attributes
|
|
like ``session_key``. You should save the session key with the user; it is
|
|
required to make requests on behalf of the user later with
|
|
`facebook_request`.
|
|
"""
|
|
@return_future
|
|
def authenticate_redirect(self, callback_uri=None, cancel_uri=None,
|
|
extended_permissions=None, callback=None):
|
|
"""Authenticates/installs this app for the current user.
|
|
|
|
.. versionchanged:: 3.1
|
|
Returns a `.Future` and takes an optional callback. These are
|
|
not strictly necessary as this method is synchronous,
|
|
but they are supplied for consistency with
|
|
`OAuthMixin.authorize_redirect`.
|
|
"""
|
|
self.require_setting("facebook_api_key", "Facebook Connect")
|
|
callback_uri = callback_uri or self.request.uri
|
|
args = {
|
|
"api_key": self.settings["facebook_api_key"],
|
|
"v": "1.0",
|
|
"fbconnect": "true",
|
|
"display": "page",
|
|
"next": urlparse.urljoin(self.request.full_url(), callback_uri),
|
|
"return_session": "true",
|
|
}
|
|
if cancel_uri:
|
|
args["cancel_url"] = urlparse.urljoin(
|
|
self.request.full_url(), cancel_uri)
|
|
if extended_permissions:
|
|
if isinstance(extended_permissions, (unicode_type, bytes_type)):
|
|
extended_permissions = [extended_permissions]
|
|
args["req_perms"] = ",".join(extended_permissions)
|
|
self.redirect("http://www.facebook.com/login.php?" +
|
|
urllib_parse.urlencode(args))
|
|
callback()
|
|
|
|
def authorize_redirect(self, extended_permissions, callback_uri=None,
|
|
cancel_uri=None, callback=None):
|
|
"""Redirects to an authorization request for the given FB resource.
|
|
|
|
The available resource names are listed at
|
|
http://wiki.developers.facebook.com/index.php/Extended_permission.
|
|
The most common resource types include:
|
|
|
|
* publish_stream
|
|
* read_stream
|
|
* email
|
|
* sms
|
|
|
|
extended_permissions can be a single permission name or a list of
|
|
names. To get the session secret and session key, call
|
|
get_authenticated_user() just as you would with
|
|
authenticate_redirect().
|
|
|
|
.. versionchanged:: 3.1
|
|
Returns a `.Future` and takes an optional callback. These are
|
|
not strictly necessary as this method is synchronous,
|
|
but they are supplied for consistency with
|
|
`OAuthMixin.authorize_redirect`.
|
|
"""
|
|
return self.authenticate_redirect(callback_uri, cancel_uri,
|
|
extended_permissions,
|
|
callback=callback)
|
|
|
|
def get_authenticated_user(self, callback):
|
|
"""Fetches the authenticated Facebook user.
|
|
|
|
The authenticated user includes the special Facebook attributes
|
|
'session_key' and 'facebook_uid' in addition to the standard
|
|
user attributes like 'name'.
|
|
"""
|
|
self.require_setting("facebook_api_key", "Facebook Connect")
|
|
session = escape.json_decode(self.get_argument("session"))
|
|
self.facebook_request(
|
|
method="facebook.users.getInfo",
|
|
callback=self.async_callback(
|
|
self._on_get_user_info, callback, session),
|
|
session_key=session["session_key"],
|
|
uids=session["uid"],
|
|
fields="uid,first_name,last_name,name,locale,pic_square,"
|
|
"profile_url,username")
|
|
|
|
def facebook_request(self, method, callback, **args):
|
|
"""Makes a Facebook API REST request.
|
|
|
|
We automatically include the Facebook API key and signature, but
|
|
it is the callers responsibility to include 'session_key' and any
|
|
other required arguments to the method.
|
|
|
|
The available Facebook methods are documented here:
|
|
http://wiki.developers.facebook.com/index.php/API
|
|
|
|
Here is an example for the stream.get() method::
|
|
|
|
class MainHandler(tornado.web.RequestHandler,
|
|
tornado.auth.FacebookMixin):
|
|
@tornado.web.authenticated
|
|
@tornado.web.asynchronous
|
|
def get(self):
|
|
self.facebook_request(
|
|
method="stream.get",
|
|
callback=self.async_callback(self._on_stream),
|
|
session_key=self.current_user["session_key"])
|
|
|
|
def _on_stream(self, stream):
|
|
if stream is None:
|
|
# Not authorized to read the stream yet?
|
|
self.redirect(self.authorize_redirect("read_stream"))
|
|
return
|
|
self.render("stream.html", stream=stream)
|
|
|
|
"""
|
|
self.require_setting("facebook_api_key", "Facebook Connect")
|
|
self.require_setting("facebook_secret", "Facebook Connect")
|
|
if not method.startswith("facebook."):
|
|
method = "facebook." + method
|
|
args["api_key"] = self.settings["facebook_api_key"]
|
|
args["v"] = "1.0"
|
|
args["method"] = method
|
|
args["call_id"] = str(long(time.time() * 1e6))
|
|
args["format"] = "json"
|
|
args["sig"] = self._signature(args)
|
|
url = "http://api.facebook.com/restserver.php?" + \
|
|
urllib_parse.urlencode(args)
|
|
http = self.get_auth_http_client()
|
|
http.fetch(url, callback=self.async_callback(
|
|
self._parse_response, callback))
|
|
|
|
def _on_get_user_info(self, callback, session, users):
|
|
if users is None:
|
|
callback(None)
|
|
return
|
|
callback({
|
|
"name": users[0]["name"],
|
|
"first_name": users[0]["first_name"],
|
|
"last_name": users[0]["last_name"],
|
|
"uid": users[0]["uid"],
|
|
"locale": users[0]["locale"],
|
|
"pic_square": users[0]["pic_square"],
|
|
"profile_url": users[0]["profile_url"],
|
|
"username": users[0].get("username"),
|
|
"session_key": session["session_key"],
|
|
"session_expires": session.get("expires"),
|
|
})
|
|
|
|
def _parse_response(self, callback, response):
|
|
if response.error:
|
|
gen_log.warning("HTTP error from Facebook: %s", response.error)
|
|
callback(None)
|
|
return
|
|
try:
|
|
json = escape.json_decode(response.body)
|
|
except Exception:
|
|
gen_log.warning("Invalid JSON from Facebook: %r", response.body)
|
|
callback(None)
|
|
return
|
|
if isinstance(json, dict) and json.get("error_code"):
|
|
gen_log.warning("Facebook error: %d: %r", json["error_code"],
|
|
json.get("error_msg"))
|
|
callback(None)
|
|
return
|
|
callback(json)
|
|
|
|
def _signature(self, args):
|
|
parts = ["%s=%s" % (n, args[n]) for n in sorted(args.keys())]
|
|
body = "".join(parts) + self.settings["facebook_secret"]
|
|
if isinstance(body, unicode_type):
|
|
body = body.encode("utf-8")
|
|
return hashlib.md5(body).hexdigest()
|
|
|
|
def get_auth_http_client(self):
|
|
"""Returns the `.AsyncHTTPClient` instance to be used for auth requests.
|
|
|
|
May be overridden by subclasses to use an HTTP client other than
|
|
the default.
|
|
"""
|
|
return httpclient.AsyncHTTPClient()
|
|
|
|
|
|
class FacebookGraphMixin(OAuth2Mixin):
|
|
"""Facebook authentication using the new Graph API and OAuth2."""
|
|
_OAUTH_ACCESS_TOKEN_URL = "https://graph.facebook.com/oauth/access_token?"
|
|
_OAUTH_AUTHORIZE_URL = "https://graph.facebook.com/oauth/authorize?"
|
|
_OAUTH_NO_CALLBACKS = False
|
|
_FACEBOOK_BASE_URL = "https://graph.facebook.com"
|
|
|
|
@_auth_return_future
|
|
def get_authenticated_user(self, redirect_uri, client_id, client_secret,
|
|
code, callback, extra_fields=None):
|
|
"""Handles the login for the Facebook user, returning a user object.
|
|
|
|
Example usage::
|
|
|
|
class FacebookGraphLoginHandler(LoginHandler, tornado.auth.FacebookGraphMixin):
|
|
@tornado.web.asynchronous
|
|
@tornado.gen.coroutine
|
|
def get(self):
|
|
if self.get_argument("code", False):
|
|
user = yield self.get_authenticated_user(
|
|
redirect_uri='/auth/facebookgraph/',
|
|
client_id=self.settings["facebook_api_key"],
|
|
client_secret=self.settings["facebook_secret"],
|
|
code=self.get_argument("code"))
|
|
# Save the user with e.g. set_secure_cookie
|
|
else:
|
|
yield self.authorize_redirect(
|
|
redirect_uri='/auth/facebookgraph/',
|
|
client_id=self.settings["facebook_api_key"],
|
|
extra_params={"scope": "read_stream,offline_access"})
|
|
"""
|
|
http = self.get_auth_http_client()
|
|
args = {
|
|
"redirect_uri": redirect_uri,
|
|
"code": code,
|
|
"client_id": client_id,
|
|
"client_secret": client_secret,
|
|
}
|
|
|
|
fields = set(['id', 'name', 'first_name', 'last_name',
|
|
'locale', 'picture', 'link'])
|
|
if extra_fields:
|
|
fields.update(extra_fields)
|
|
|
|
http.fetch(self._oauth_request_token_url(**args),
|
|
self.async_callback(self._on_access_token, redirect_uri, client_id,
|
|
client_secret, callback, fields))
|
|
|
|
def _on_access_token(self, redirect_uri, client_id, client_secret,
|
|
future, fields, response):
|
|
if response.error:
|
|
future.set_exception(AuthError('Facebook auth error: %s' % str(response)))
|
|
return
|
|
|
|
args = escape.parse_qs_bytes(escape.native_str(response.body))
|
|
session = {
|
|
"access_token": args["access_token"][-1],
|
|
"expires": args.get("expires")
|
|
}
|
|
|
|
self.facebook_request(
|
|
path="/me",
|
|
callback=self.async_callback(
|
|
self._on_get_user_info, future, session, fields),
|
|
access_token=session["access_token"],
|
|
fields=",".join(fields)
|
|
)
|
|
|
|
def _on_get_user_info(self, future, session, fields, user):
|
|
if user is None:
|
|
future.set_result(None)
|
|
return
|
|
|
|
fieldmap = {}
|
|
for field in fields:
|
|
fieldmap[field] = user.get(field)
|
|
|
|
fieldmap.update({"access_token": session["access_token"], "session_expires": session.get("expires")})
|
|
future.set_result(fieldmap)
|
|
|
|
@_auth_return_future
|
|
def facebook_request(self, path, callback, access_token=None,
|
|
post_args=None, **args):
|
|
"""Fetches the given relative API path, e.g., "/btaylor/picture"
|
|
|
|
If the request is a POST, ``post_args`` should be provided. Query
|
|
string arguments should be given as keyword arguments.
|
|
|
|
An introduction to the Facebook Graph API can be found at
|
|
http://developers.facebook.com/docs/api
|
|
|
|
Many methods require an OAuth access token which you can
|
|
obtain through `~OAuth2Mixin.authorize_redirect` and
|
|
`get_authenticated_user`. The user returned through that
|
|
process includes an ``access_token`` attribute that can be
|
|
used to make authenticated requests via this method.
|
|
|
|
Example usage::
|
|
|
|
class MainHandler(tornado.web.RequestHandler,
|
|
tornado.auth.FacebookGraphMixin):
|
|
@tornado.web.authenticated
|
|
@tornado.web.asynchronous
|
|
@tornado.gen.coroutine
|
|
def get(self):
|
|
new_entry = yield self.facebook_request(
|
|
"/me/feed",
|
|
post_args={"message": "I am posting from my Tornado application!"},
|
|
access_token=self.current_user["access_token"])
|
|
|
|
if not new_entry:
|
|
# Call failed; perhaps missing permission?
|
|
yield self.authorize_redirect()
|
|
return
|
|
self.finish("Posted a message!")
|
|
|
|
The given path is relative to ``self._FACEBOOK_BASE_URL``,
|
|
by default "https://graph.facebook.com".
|
|
|
|
.. versionchanged:: 3.1
|
|
Added the ability to override ``self._FACEBOOK_BASE_URL``.
|
|
"""
|
|
url = self._FACEBOOK_BASE_URL + path
|
|
all_args = {}
|
|
if access_token:
|
|
all_args["access_token"] = access_token
|
|
all_args.update(args)
|
|
|
|
if all_args:
|
|
url += "?" + urllib_parse.urlencode(all_args)
|
|
callback = self.async_callback(self._on_facebook_request, callback)
|
|
http = self.get_auth_http_client()
|
|
if post_args is not None:
|
|
http.fetch(url, method="POST", body=urllib_parse.urlencode(post_args),
|
|
callback=callback)
|
|
else:
|
|
http.fetch(url, callback=callback)
|
|
|
|
def _on_facebook_request(self, future, response):
|
|
if response.error:
|
|
future.set_exception(AuthError("Error response %s fetching %s" %
|
|
(response.error, response.request.url)))
|
|
return
|
|
|
|
future.set_result(escape.json_decode(response.body))
|
|
|
|
def get_auth_http_client(self):
|
|
"""Returns the `.AsyncHTTPClient` instance to be used for auth requests.
|
|
|
|
May be overridden by subclasses to use an HTTP client other than
|
|
the default.
|
|
"""
|
|
return httpclient.AsyncHTTPClient()
|
|
|
|
|
|
def _oauth_signature(consumer_token, method, url, parameters={}, token=None):
|
|
"""Calculates the HMAC-SHA1 OAuth signature for the given request.
|
|
|
|
See http://oauth.net/core/1.0/#signing_process
|
|
"""
|
|
parts = urlparse.urlparse(url)
|
|
scheme, netloc, path = parts[:3]
|
|
normalized_url = scheme.lower() + "://" + netloc.lower() + path
|
|
|
|
base_elems = []
|
|
base_elems.append(method.upper())
|
|
base_elems.append(normalized_url)
|
|
base_elems.append("&".join("%s=%s" % (k, _oauth_escape(str(v)))
|
|
for k, v in sorted(parameters.items())))
|
|
base_string = "&".join(_oauth_escape(e) for e in base_elems)
|
|
|
|
key_elems = [escape.utf8(consumer_token["secret"])]
|
|
key_elems.append(escape.utf8(token["secret"] if token else ""))
|
|
key = b"&".join(key_elems)
|
|
|
|
hash = hmac.new(key, escape.utf8(base_string), hashlib.sha1)
|
|
return binascii.b2a_base64(hash.digest())[:-1]
|
|
|
|
|
|
def _oauth10a_signature(consumer_token, method, url, parameters={}, token=None):
|
|
"""Calculates the HMAC-SHA1 OAuth 1.0a signature for the given request.
|
|
|
|
See http://oauth.net/core/1.0a/#signing_process
|
|
"""
|
|
parts = urlparse.urlparse(url)
|
|
scheme, netloc, path = parts[:3]
|
|
normalized_url = scheme.lower() + "://" + netloc.lower() + path
|
|
|
|
base_elems = []
|
|
base_elems.append(method.upper())
|
|
base_elems.append(normalized_url)
|
|
base_elems.append("&".join("%s=%s" % (k, _oauth_escape(str(v)))
|
|
for k, v in sorted(parameters.items())))
|
|
|
|
base_string = "&".join(_oauth_escape(e) for e in base_elems)
|
|
key_elems = [escape.utf8(urllib_parse.quote(consumer_token["secret"], safe='~'))]
|
|
key_elems.append(escape.utf8(urllib_parse.quote(token["secret"], safe='~') if token else ""))
|
|
key = b"&".join(key_elems)
|
|
|
|
hash = hmac.new(key, escape.utf8(base_string), hashlib.sha1)
|
|
return binascii.b2a_base64(hash.digest())[:-1]
|
|
|
|
|
|
def _oauth_escape(val):
|
|
if isinstance(val, unicode_type):
|
|
val = val.encode("utf-8")
|
|
return urllib_parse.quote(val, safe="~")
|
|
|
|
|
|
def _oauth_parse_response(body):
|
|
# I can't find an officially-defined encoding for oauth responses and
|
|
# have never seen anyone use non-ascii. Leave the response in a byte
|
|
# string for python 2, and use utf8 on python 3.
|
|
body = escape.native_str(body)
|
|
p = urlparse.parse_qs(body, keep_blank_values=False)
|
|
token = dict(key=p["oauth_token"][0], secret=p["oauth_token_secret"][0])
|
|
|
|
# Add the extra parameters the Provider included to the token
|
|
special = ("oauth_token", "oauth_token_secret")
|
|
token.update((k, p[k][0]) for k in p if k not in special)
|
|
return token
|