Merge remote-tracking branch 'refs/remotes/tsyesika/master'

New oauth tools!  Heck yeah!

mediagoblin/db/migrations.py

@@ -25,6 +25,8 @@ from sqlalchemy.ext.declarative import declarative_base
 from sqlalchemy.sql import and_
 from migrate.changeset.constraint import UniqueConstraint
 
+
+from mediagoblin.db.extratypes import JSONEncoded
 from mediagoblin.db.migration_tools import RegisterMigration, inspect_table
 from mediagoblin.db.models import MediaEntry, Collection, User, MediaComment
 
@@ -379,3 +381,82 @@ def pw_hash_nullable(db):
         constraint.create()
 
     db.commit()
+
+
+# oauth1 migrations
+class Client_v0(declarative_base()):
+    """
+        Model representing a client - Used for API Auth
+    """
+    __tablename__ = "core__clients"
+
+    id = Column(Unicode, nullable=True, primary_key=True)
+    secret = Column(Unicode, nullable=False)
+    expirey = Column(DateTime, nullable=True)
+    application_type = Column(Unicode, nullable=False)
+    created = Column(DateTime, nullable=False, default=datetime.datetime.now)
+    updated = Column(DateTime, nullable=False, default=datetime.datetime.now)
+
+    # optional stuff
+    redirect_uri = Column(JSONEncoded, nullable=True)
+    logo_url = Column(Unicode, nullable=True)
+    application_name = Column(Unicode, nullable=True)
+    contacts = Column(JSONEncoded, nullable=True)
+
+    def __repr__(self):
+        if self.application_name:
+            return "<Client {0} - {1}>".format(self.application_name, self.id)
+        else:
+            return "<Client {0}>".format(self.id)
+
+class RequestToken_v0(declarative_base()):
+    """
+        Model for representing the request tokens
+    """
+    __tablename__ = "core__request_tokens"
+
+    token = Column(Unicode, primary_key=True)
+    secret = Column(Unicode, nullable=False)
+    client = Column(Unicode, ForeignKey(Client_v0.id))
+    user = Column(Integer, ForeignKey(User.id), nullable=True)
+    used = Column(Boolean, default=False)
+    authenticated = Column(Boolean, default=False)
+    verifier = Column(Unicode, nullable=True)
+    callback = Column(Unicode, nullable=False, default=u"oob")
+    created = Column(DateTime, nullable=False, default=datetime.datetime.now)
+    updated = Column(DateTime, nullable=False, default=datetime.datetime.now)
+    
+class AccessToken_v0(declarative_base()):
+    """
+        Model for representing the access tokens
+    """
+    __tablename__ = "core__access_tokens"
+
+    token = Column(Unicode, nullable=False, primary_key=True)
+    secret = Column(Unicode, nullable=False)
+    user = Column(Integer, ForeignKey(User.id))
+    request_token = Column(Unicode, ForeignKey(RequestToken_v0.token))
+    created = Column(DateTime, nullable=False, default=datetime.datetime.now)
+    updated = Column(DateTime, nullable=False, default=datetime.datetime.now)
+ 
+
+class NonceTimestamp_v0(declarative_base()):
+    """
+        A place the timestamp and nonce can be stored - this is for OAuth1
+    """
+    __tablename__ = "core__nonce_timestamps"
+
+    nonce = Column(Unicode, nullable=False, primary_key=True)
+    timestamp = Column(DateTime, nullable=False, primary_key=True)
+
+
+@RegisterMigration(14, MIGRATIONS)
+def create_oauth1_tables(db):
+    """ Creates the OAuth1 tables """
+
+    Client_v0.__table__.create(db.bind)
+    RequestToken_v0.__table__.create(db.bind)
+    AccessToken_v0.__table__.create(db.bind)
+    NonceTimestamp_v0.__table__.create(db.bind)
+
+    db.commit()

mediagoblin/db/models.py

@@ -105,6 +105,72 @@ class User(Base, UserMixin):
         _log.info('Deleted user "{0}" account'.format(self.username))
 
 
+class Client(Base):
+    """
+        Model representing a client - Used for API Auth
+    """
+    __tablename__ = "core__clients"
+
+    id = Column(Unicode, nullable=True, primary_key=True)
+    secret = Column(Unicode, nullable=False)
+    expirey = Column(DateTime, nullable=True)
+    application_type = Column(Unicode, nullable=False)
+    created = Column(DateTime, nullable=False, default=datetime.datetime.now)
+    updated = Column(DateTime, nullable=False, default=datetime.datetime.now)
+
+    # optional stuff
+    redirect_uri = Column(JSONEncoded, nullable=True)
+    logo_url = Column(Unicode, nullable=True)
+    application_name = Column(Unicode, nullable=True)
+    contacts = Column(JSONEncoded, nullable=True)
+
+    def __repr__(self):
+        if self.application_name:
+            return "<Client {0} - {1}>".format(self.application_name, self.id)
+        else:
+            return "<Client {0}>".format(self.id)
+
+class RequestToken(Base):
+    """
+        Model for representing the request tokens
+    """
+    __tablename__ = "core__request_tokens"
+
+    token = Column(Unicode, primary_key=True)
+    secret = Column(Unicode, nullable=False)
+    client = Column(Unicode, ForeignKey(Client.id))
+    user = Column(Integer, ForeignKey(User.id), nullable=True)
+    used = Column(Boolean, default=False)
+    authenticated = Column(Boolean, default=False)
+    verifier = Column(Unicode, nullable=True)
+    callback = Column(Unicode, nullable=False, default=u"oob")
+    created = Column(DateTime, nullable=False, default=datetime.datetime.now)
+    updated = Column(DateTime, nullable=False, default=datetime.datetime.now)
+    
+class AccessToken(Base):
+    """
+        Model for representing the access tokens
+    """
+    __tablename__ = "core__access_tokens"
+
+    token = Column(Unicode, nullable=False, primary_key=True)
+    secret = Column(Unicode, nullable=False)
+    user = Column(Integer, ForeignKey(User.id))
+    request_token = Column(Unicode, ForeignKey(RequestToken.token))
+    created = Column(DateTime, nullable=False, default=datetime.datetime.now)
+    updated = Column(DateTime, nullable=False, default=datetime.datetime.now)
+ 
+
+class NonceTimestamp(Base):
+    """
+        A place the timestamp and nonce can be stored - this is for OAuth1
+    """
+    __tablename__ = "core__nonce_timestamps"
+
+    nonce = Column(Unicode, nullable=False, primary_key=True)
+    timestamp = Column(DateTime, nullable=False, primary_key=True)
+
+
 class MediaEntry(Base, MediaEntryMixin):
     """
     TODO: Consider fetching the media_files using join
@@ -580,10 +646,10 @@ with_polymorphic(
     [ProcessingNotification, CommentNotification])
 
 MODELS = [
-    User, MediaEntry, Tag, MediaTag, MediaComment, Collection, CollectionItem,
-    MediaFile, FileKeynames, MediaAttachmentFile, ProcessingMetaData,
-    Notification, CommentNotification, ProcessingNotification,
-    CommentSubscription]
+    User, Client, RequestToken, AccessToken, NonceTimestamp, MediaEntry, Tag, 
+    MediaTag, MediaComment, Collection, CollectionItem, MediaFile, FileKeynames, 
+    MediaAttachmentFile, ProcessingMetaData, Notification, CommentNotification,
+    ProcessingNotification, CommentSubscription]
 
 """
  Foundations are the default rows that are created immediately after the tables 

mediagoblin/decorators.py

@@ -18,13 +18,16 @@ from functools import wraps
 
 from urlparse import urljoin
 from werkzeug.exceptions import Forbidden, NotFound
+from oauthlib.oauth1 import ResourceEndpoint
 
 from mediagoblin import mg_globals as mgg
 from mediagoblin import messages
 from mediagoblin.db.models import MediaEntry, User
-from mediagoblin.tools.response import redirect, render_404
+from mediagoblin.tools.response import json_response, redirect, render_404
 from mediagoblin.tools.translate import pass_to_ugettext as _
 
+from mediagoblin.oauth.tools.request import decode_authorization_header
+from mediagoblin.oauth.oauth import GMGRequestValidator
 
 def require_active_login(controller):
     """
@@ -268,3 +271,32 @@ def auth_enabled(controller):
         return controller(request, *args, **kwargs)
 
     return wrapper
+
+def oauth_required(controller):
+    """ Used to wrap API endpoints where oauth is required """
+    @wraps(controller)
+    def wrapper(request, *args, **kwargs):
+        data = request.headers
+        authorization = decode_authorization_header(data)
+
+        if authorization == dict():
+            error = "Missing required parameter."
+            return json_response({"error": error}, status=400)
+
+         
+        request_validator = GMGRequestValidator()
+        resource_endpoint = ResourceEndpoint(request_validator)
+        valid, request = resource_endpoint.validate_protected_resource_request(
+                uri=request.url,
+                http_method=request.method,
+                body=request.get_data(),
+                headers=dict(request.headers),
+                )
+
+        if not valid:
+            error = "Invalid oauth prarameter."
+            return json_response({"error": error}, status=400)
+
+        return controller(request, *args, **kwargs)
+
+    return wrapper

mediagoblin/oauth/__init__.py

@@ -0,0 +1,16 @@
+# GNU MediaGoblin -- federated, autonomous media hosting
+# Copyright (C) 2011, 2012 MediaGoblin contributors.  See AUTHORS.
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+

mediagoblin/oauth/exceptions.py

@@ -0,0 +1,18 @@
+# GNU MediaGoblin -- federated, autonomous media hosting
+# Copyright (C) 2011, 2012 MediaGoblin contributors.  See AUTHORS.
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+class ValidationException(Exception):
+    pass

mediagoblin/oauth/forms.py

@@ -0,0 +1,7 @@
+import wtforms
+
+class AuthorizeForm(wtforms.Form):
+    """ Form used to authorize the request token """
+
+    oauth_token = wtforms.HiddenField("oauth_token")
+    oauth_verifier = wtforms.HiddenField("oauth_verifier")

mediagoblin/oauth/oauth.py

@@ -0,0 +1,132 @@
+# GNU MediaGoblin -- federated, autonomous media hosting
+# Copyright (C) 2011, 2012 MediaGoblin contributors.  See AUTHORS.
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+from oauthlib.common import Request
+from oauthlib.oauth1 import RequestValidator 
+
+from mediagoblin.db.models import NonceTimestamp, Client, RequestToken, AccessToken
+
+
+
+class GMGRequestValidator(RequestValidator):
+
+    enforce_ssl = False
+
+    def __init__(self, data=None, *args, **kwargs):
+        self.POST = data
+        super(GMGRequestValidator, self).__init__(*args, **kwargs)
+
+    def save_request_token(self, token, request):
+        """ Saves request token in db """
+        client_id = self.POST[u"oauth_consumer_key"]
+
+        request_token = RequestToken(
+                token=token["oauth_token"],
+                secret=token["oauth_token_secret"],
+                )
+        request_token.client = client_id
+        if u"oauth_callback" in self.POST:
+            request_token.callback = self.POST[u"oauth_callback"]
+        request_token.save()
+
+    def save_verifier(self, token, verifier, request):
+        """ Saves the oauth request verifier """
+        request_token = RequestToken.query.filter_by(token=token).first()
+        request_token.verifier = verifier["oauth_verifier"]
+        request_token.save()
+
+    def save_access_token(self, token, request):
+        """ Saves access token in db """
+        access_token = AccessToken(
+                token=token["oauth_token"],
+                secret=token["oauth_token_secret"],
+        )
+        access_token.request_token = request.oauth_token
+        request_token = RequestToken.query.filter_by(token=request.oauth_token).first()
+        access_token.user = request_token.user
+        access_token.save()
+
+    def get_realms(*args, **kwargs):
+        """ Currently a stub - called when making AccessTokens """
+        return list()
+
+    def validate_timestamp_and_nonce(self, client_key, timestamp, 
+                                     nonce, request, request_token=None, 
+                                     access_token=None):
+        nc = NonceTimestamp.query.filter_by(timestamp=timestamp, nonce=nonce)
+        nc = nc.first()
+        if nc is None:
+            return True
+        
+        return False
+
+    def validate_client_key(self, client_key, request):
+        """ Verifies client exists with id of client_key """
+        client = Client.query.filter_by(id=client_key).first()
+        if client is None:
+            return False
+        
+        return True
+
+    def validate_access_token(self, client_key, token, request):
+        """ Verifies token exists for client with id of client_key """
+        client = Client.query.filter_by(id=client_key).first()
+        token = AccessToken.query.filter_by(token=token)
+        token = token.first()
+
+        if token is None:
+            return False
+
+        request_token = RequestToken.query.filter_by(token=token.request_token)
+        request_token = request_token.first()
+
+        if client.id != request_token.client:
+            return False
+
+        return True
+
+    def validate_realms(self, *args, **kwargs):
+        """ Would validate reals however not using these yet. """
+        return True # implement when realms are implemented
+
+
+    def get_client_secret(self, client_key, request):
+        """ Retrives a client secret with from a client with an id of client_key """
+        client = Client.query.filter_by(id=client_key).first()
+        return client.secret
+
+    def get_access_token_secret(self, client_key, token, request):
+        access_token = AccessToken.query.filter_by(token=token).first()
+        return access_token.secret
+
+class GMGRequest(Request):
+    """
+        Fills in data to produce a oauth.common.Request object from a
+        werkzeug Request object
+    """
+
+    def __init__(self, request, *args, **kwargs):
+        """ 
+            :param request: werkzeug request object
+            
+            any extra params are passed to oauthlib.common.Request object
+        """
+        kwargs["uri"] = kwargs.get("uri", request.url)
+        kwargs["http_method"] = kwargs.get("http_method", request.method)
+        kwargs["body"] = kwargs.get("body", request.get_data())
+        kwargs["headers"] = kwargs.get("headers", dict(request.headers))
+
+        super(GMGRequest, self).__init__(*args, **kwargs)

mediagoblin/oauth/routing.py

@@ -0,0 +1,43 @@
+# GNU MediaGoblin -- federated, autonomous media hosting
+# Copyright (C) 2011, 2012 MediaGoblin contributors.  See AUTHORS.
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+from mediagoblin.tools.routing import add_route
+
+# client registration & oauth
+add_route(
+        "mediagoblin.oauth",
+        "/api/client/register",
+        "mediagoblin.oauth.views:client_register"
+        )
+
+add_route(
+        "mediagoblin.oauth",
+        "/oauth/request_token",
+        "mediagoblin.oauth.views:request_token"
+        )
+
+add_route(
+        "mediagoblin.oauth",
+        "/oauth/authorize",
+        "mediagoblin.oauth.views:authorize",
+        )
+
+add_route(
+        "mediagoblin.oauth",
+        "/oauth/access_token",
+        "mediagoblin.oauth.views:access_token"
+        )
+

mediagoblin/oauth/tools/forms.py

@@ -0,0 +1,25 @@
+# GNU MediaGoblin -- federated, autonomous media hosting
+# Copyright (C) 2011, 2012 MediaGoblin contributors.  See AUTHORS.
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+class WTFormData(dict):
+    """
+        Provides a WTForm usable dictionary
+    """
+    def getlist(self, key):
+        v = self[key]
+        if not isinstance(v, (list, tuple)):
+            v = [v]
+        return v

mediagoblin/oauth/tools/request.py

@@ -0,0 +1,35 @@
+# GNU MediaGoblin -- federated, autonomous media hosting
+# Copyright (C) 2011, 2012 MediaGoblin contributors.  See AUTHORS.
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+def decode_authorization_header(header):
+    """ Decodes a HTTP Authorization Header to python dictionary """
+    authorization = header.get("Authorization", "").lstrip(" ").lstrip("OAuth")
+    tokens = {}
+
+    for param in authorization.split(","):
+        try:
+            key, value = param.split("=")
+        except ValueError:
+            continue
+ 
+        key = key.lstrip(" ")
+        value = value.lstrip(" ").lstrip('"')
+        value = value.rstrip(" ").rstrip('"')
+
+        tokens[key] = value
+
+    return tokens
+

mediagoblin/oauth/views.py

@@ -0,0 +1,339 @@
+# GNU MediaGoblin -- federated, autonomous media hosting
+# Copyright (C) 2011, 2012 MediaGoblin contributors.  See AUTHORS.
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+import datetime
+
+from oauthlib.oauth1 import (RequestTokenEndpoint, AuthorizationEndpoint,
+                             AccessTokenEndpoint)
+                             
+from mediagoblin.decorators import require_active_login
+from mediagoblin.tools.translate import pass_to_ugettext
+from mediagoblin.meddleware.csrf import csrf_exempt
+from mediagoblin.tools.request import decode_request
+from mediagoblin.tools.response import (render_to_response, redirect, 
+                                        json_response, render_400,
+                                        form_response)
+from mediagoblin.tools.crypto import random_string
+from mediagoblin.tools.validator import validate_email, validate_url
+from mediagoblin.oauth.forms import AuthorizeForm
+from mediagoblin.oauth.oauth import GMGRequestValidator, GMGRequest
+from mediagoblin.oauth.tools.request import decode_authorization_header
+from mediagoblin.oauth.tools.forms import WTFormData
+from mediagoblin.db.models import NonceTimestamp, Client, RequestToken
+
+# possible client types
+client_types = ["web", "native"] # currently what pump supports
+
+@csrf_exempt
+def client_register(request):
+    """ Endpoint for client registration """
+    try:
+        data = decode_request(request) 
+    except ValueError:
+        error = "Could not decode data."
+        return json_response({"error": error}, status=400)
+
+    if data is "":
+        error = "Unknown Content-Type"
+        return json_response({"error": error}, status=400)
+
+    if "type" not in data:
+        error = "No registration type provided."
+        return json_response({"error": error}, status=400)
+    if data.get("application_type", None) not in client_types:
+        error = "Unknown application_type."
+        return json_response({"error": error}, status=400)
+    
+    client_type = data["type"]
+
+    if client_type == "client_update":
+        # updating a client
+        if "client_id" not in data:
+            error = "client_id is requried to update."
+            return json_response({"error": error}, status=400)
+        elif "client_secret" not in data:
+            error = "client_secret is required to update."
+            return json_response({"error": error}, status=400)
+
+        client = Client.query.filter_by(
+                id=data["client_id"], 
+                secret=data["client_secret"]
+                ).first()
+
+        if client is None:
+            error = "Unauthorized."
+            return json_response({"error": error}, status=403)
+
+        client.application_name = data.get(
+                "application_name", 
+                client.application_name
+                )
+
+        client.application_type = data.get(
+                "application_type",
+                client.application_type
+                )
+
+        app_name = ("application_type", client.application_name)
+        if app_name in client_types:
+            client.application_name = app_name
+
+    elif client_type == "client_associate":
+        # registering
+        if "client_id" in data:
+            error = "Only set client_id for update."
+            return json_response({"error": error}, status=400)
+        elif "access_token" in data:
+            error = "access_token not needed for registration."
+            return json_response({"error": error}, status=400)
+        elif "client_secret" in data:
+            error = "Only set client_secret for update."
+            return json_response({"error": error}, status=400)
+
+        # generate the client_id and client_secret
+        client_id = random_string(22) # seems to be what pump uses
+        client_secret = random_string(43) # again, seems to be what pump uses
+        expirey = 0 # for now, lets not have it expire
+        expirey_db = None if expirey == 0 else expirey
+        application_type = data["application_type"] 
+ 
+        # save it
+        client = Client(
+                id=client_id, 
+                secret=client_secret, 
+                expirey=expirey_db,
+                application_type=application_type,
+                )
+
+    else:
+        error = "Invalid registration type"
+        return json_response({"error": error}, status=400)
+
+    logo_url = data.get("logo_url", client.logo_url)
+    if logo_url is not None and not validate_url(logo_url):
+        error = "Logo URL {0} is not a valid URL.".format(logo_url)
+        return json_response(
+                {"error": error}, 
+                status=400
+                )
+    else:
+        client.logo_url = logo_url
+    
+    client.application_name = data.get("application_name", None)
+
+    contacts = data.get("contacts", None)
+    if contacts is not None:
+        if type(contacts) is not unicode:
+            error = "Contacts must be a string of space-seporated email addresses."
+            return json_response({"error": error}, status=400)
+
+        contacts = contacts.split()
+        for contact in contacts:
+            if not validate_email(contact):
+                # not a valid email
+                error = "Email {0} is not a valid email.".format(contact)
+                return json_response({"error": error}, status=400)
+     
+        
+        client.contacts = contacts
+
+    redirect_uris = data.get("redirect_uris", None)
+    if redirect_uris is not None:
+        if type(redirect_uris) is not unicode:
+            error = "redirect_uris must be space-seporated URLs."
+            return json_response({"error": error}, status=400)
+
+        redirect_uris = redirect_uris.split()
+
+        for uri in redirect_uris:
+            if not validate_url(uri):
+                # not a valid uri
+                error = "URI {0} is not a valid URI".format(uri)
+                return json_response({"error": error}, status=400)
+
+        client.redirect_uri = redirect_uris
+
+ 
+    client.save()
+
+    expirey = 0 if client.expirey is None else client.expirey
+
+    return json_response(
+        {
+            "client_id": client.id,
+            "client_secret": client.secret,
+            "expires_at": expirey,
+        })
+
+@csrf_exempt
+def request_token(request):
+    """ Returns request token """
+    try:
+        data = decode_request(request) 
+    except ValueError:
+        error = "Could not decode data."
+        return json_response({"error": error}, status=400)
+
+    if data == "":
+        error = "Unknown Content-Type"
+        return json_response({"error": error}, status=400)
+
+    if not data and request.headers:
+        data = request.headers
+    
+    data = dict(data) # mutableifying
+
+    authorization = decode_authorization_header(data)
+
+    if authorization == dict() or u"oauth_consumer_key" not in authorization:
+        error = "Missing required parameter."
+        return json_response({"error": error}, status=400)
+
+    # check the client_id
+    client_id = authorization[u"oauth_consumer_key"]
+    client = Client.query.filter_by(id=client_id).first()
+
+    if client == None:
+        # client_id is invalid
+        error = "Invalid client_id"
+        return json_response({"error": error}, status=400)
+
+   # make request token and return to client
+    request_validator = GMGRequestValidator(authorization)
+    rv = RequestTokenEndpoint(request_validator)
+    tokens = rv.create_request_token(request, authorization)
+
+    # store the nonce & timestamp before we return back
+    nonce = authorization[u"oauth_nonce"]
+    timestamp = authorization[u"oauth_timestamp"]
+    timestamp = datetime.datetime.fromtimestamp(float(timestamp))
+
+    nc = NonceTimestamp(nonce=nonce, timestamp=timestamp)
+    nc.save()
+
+    return form_response(tokens)
+
+@require_active_login    
+def authorize(request):
+    """ Displays a page for user to authorize """
+    if request.method == "POST":
+        return authorize_finish(request)
+    
+    _ = pass_to_ugettext
+    token = request.args.get("oauth_token", None)
+    if token is None:
+        # no token supplied, display a html 400 this time
+        err_msg = _("Must provide an oauth_token.")
+        return render_400(request, err_msg=err_msg)
+
+    oauth_request = RequestToken.query.filter_by(token=token).first()
+    if oauth_request is None:
+        err_msg = _("No request token found.")
+        return render_400(request, err_msg)
+    
+    if oauth_request.used:
+        return authorize_finish(request)
+    
+    if oauth_request.verifier is None:
+        orequest = GMGRequest(request)
+        request_validator = GMGRequestValidator()
+        auth_endpoint = AuthorizationEndpoint(request_validator)
+        verifier = auth_endpoint.create_verifier(orequest, {})
+        oauth_request.verifier = verifier["oauth_verifier"]
+
+    oauth_request.user = request.user.id
+    oauth_request.save()
+
+    # find client & build context
+    client = Client.query.filter_by(id=oauth_request.client).first()
+
+    authorize_form = AuthorizeForm(WTFormData({
+            "oauth_token": oauth_request.token,
+            "oauth_verifier": oauth_request.verifier
+            }))
+
+    context = {
+            "user": request.user,
+            "oauth_request": oauth_request,
+            "client": client,
+            "authorize_form": authorize_form,
+            }
+
+
+    # AuthorizationEndpoint
+    return render_to_response(
+            request,
+            "mediagoblin/api/authorize.html",
+            context
+            )
+            
+
+def authorize_finish(request):
+    """ Finishes the authorize """
+    _ = pass_to_ugettext
+    token = request.form["oauth_token"]
+    verifier = request.form["oauth_verifier"]
+    oauth_request = RequestToken.query.filter_by(token=token, verifier=verifier)
+    oauth_request = oauth_request.first()
+    
+    if oauth_request is None:
+        # invalid token or verifier
+        err_msg = _("No request token found.")
+        return render_400(request, err_msg)
+
+    oauth_request.used = True
+    oauth_request.updated = datetime.datetime.now()
+    oauth_request.save()
+
+    if oauth_request.callback == "oob":
+        # out of bounds
+        context = {"oauth_request": oauth_request}
+        return render_to_response(
+                request,
+                "mediagoblin/api/oob.html",
+                context
+                )
+
+    # okay we need to redirect them then!
+    querystring = "?oauth_token={0}&oauth_verifier={1}".format(
+            oauth_request.token,
+            oauth_request.verifier
+            )
+
+    return redirect(
+            request,
+            querystring=querystring,
+            location=oauth_request.callback
+            )
+
+@csrf_exempt
+def access_token(request):
+    """ Provides an access token based on a valid verifier and request token """ 
+    data = request.headers
+
+    parsed_tokens = decode_authorization_header(data)    
+
+    if parsed_tokens == dict() or "oauth_token" not in parsed_tokens:
+        error = "Missing required parameter."
+        return json_response({"error": error}, status=400)
+
+
+    request.oauth_token = parsed_tokens["oauth_token"]
+    request_validator = GMGRequestValidator(data)
+    av = AccessTokenEndpoint(request_validator)
+    tokens = av.create_access_token(request, {})
+    return form_response(tokens)
+

mediagoblin/plugins/api/tools.py

@@ -51,30 +51,6 @@ class Auth(object):
     def __call__(self, request, *args, **kw):
         raise NotImplemented()
 
-
-def json_response(serializable, _disable_cors=False, *args, **kw):
-    '''
-    Serializes a json objects and returns a werkzeug Response object with the
-    serialized value as the response body and Content-Type: application/json.
-
-    :param serializable: A json-serializable object
-
-    Any extra arguments and keyword arguments are passed to the
-    Response.__init__ method.
-    '''
-    response = Response(json.dumps(serializable), *args, content_type='application/json', **kw)
-
-    if not _disable_cors:
-        cors_headers = {
-                'Access-Control-Allow-Origin': '*',
-                'Access-Control-Allow-Methods': 'POST, GET, OPTIONS',
-                'Access-Control-Allow-Headers': 'Content-Type, X-Requested-With'}
-        for key, value in cors_headers.iteritems():
-            response.headers.set(key, value)
-
-    return response
-
-
 def get_entry_serializable(entry, urlgen):
     '''
     Returns a serializable dict() of a MediaEntry instance.

mediagoblin/plugins/api/views.py

@@ -21,11 +21,11 @@ from os.path import splitext
 from werkzeug.exceptions import BadRequest, Forbidden
 from werkzeug.wrappers import Response
 
+from mediagoblin.tools.response import json_response
 from mediagoblin.decorators import require_active_login
 from mediagoblin.meddleware.csrf import csrf_exempt
 from mediagoblin.media_types import sniff_media
-from mediagoblin.plugins.api.tools import api_auth, get_entry_serializable, \
-        json_response
+from mediagoblin.plugins.api.tools import api_auth, get_entry_serializable
 from mediagoblin.submit.lib import check_file_field, prepare_queue_task, \
     run_process_media, new_upload_entry
 

mediagoblin/plugins/oauth/__init__.py

@@ -35,22 +35,22 @@ def setup_plugin():
 
     routes = [
         ('mediagoblin.plugins.oauth.authorize',
-            '/oauth/authorize',
+            '/oauth-2/authorize',
             'mediagoblin.plugins.oauth.views:authorize'),
         ('mediagoblin.plugins.oauth.authorize_client',
-            '/oauth/client/authorize',
+            '/oauth-2/client/authorize',
             'mediagoblin.plugins.oauth.views:authorize_client'),
         ('mediagoblin.plugins.oauth.access_token',
-            '/oauth/access_token',
+            '/oauth-2/access_token',
             'mediagoblin.plugins.oauth.views:access_token'),
         ('mediagoblin.plugins.oauth.list_connections',
-            '/oauth/client/connections',
+            '/oauth-2/client/connections',
             'mediagoblin.plugins.oauth.views:list_connections'),
         ('mediagoblin.plugins.oauth.register_client',
-            '/oauth/client/register',
+            '/oauth-2/client/register',
             'mediagoblin.plugins.oauth.views:register_client'),
         ('mediagoblin.plugins.oauth.list_clients',
-            '/oauth/client/list',
+            '/oauth-2/client/list',
             'mediagoblin.plugins.oauth.views:list_clients')]
 
     pluginapi.register_routes(routes)

mediagoblin/plugins/oauth/tools.py

@@ -23,7 +23,7 @@ from datetime import datetime
 
 from functools import wraps
 
-from mediagoblin.plugins.api.tools import json_response
+from mediagoblin.tools.response import json_response
 
 
 def require_client_auth(controller):

mediagoblin/plugins/oauth/views.py

@@ -21,7 +21,7 @@ from urllib import urlencode
 
 from werkzeug.exceptions import BadRequest
 
-from mediagoblin.tools.response import render_to_response, redirect
+from mediagoblin.tools.response import render_to_response, redirect, json_response
 from mediagoblin.decorators import require_active_login
 from mediagoblin.messages import add_message, SUCCESS
 from mediagoblin.tools.translate import pass_to_ugettext as _
@@ -31,7 +31,6 @@ from mediagoblin.plugins.oauth.forms import ClientRegistrationForm, \
         AuthorizationForm
 from mediagoblin.plugins.oauth.tools import require_client_auth, \
         create_token
-from mediagoblin.plugins.api.tools import json_response
 
 _log = logging.getLogger(__name__)
 

mediagoblin/routing.py

@@ -36,7 +36,8 @@ def get_url_map():
     import mediagoblin.webfinger.routing
     import mediagoblin.listings.routing
     import mediagoblin.notifications.routing
-
+    import mediagoblin.oauth.routing
+    
     for route in PluginManager().get_routes():
         add_route(*route)
 

mediagoblin/static/css/base.css

@@ -757,3 +757,10 @@ pre {
 #exif_additional_info table tr {
    margin-bottom: 10px;
 }
+
+p.verifier {
+    text-align:center;
+    font-size:50px;
+    none repeat scroll 0% 0% rgb(221, 221, 221);
+    padding: 1em 0px;
+}

mediagoblin/templates/mediagoblin/api/authorize.html

@@ -0,0 +1,56 @@
+{#
+# GNU MediaGoblin -- federated, autonomous media hosting
+# Copyright (C) 2011, 2012 MediaGoblin contributors.  See AUTHORS.
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+#}
+{% extends "mediagoblin/base.html" %}
+
+{% block title -%}
+  {% trans %}Authorization{% endtrans %} &mdash; {{ super() }}
+{%- endblock %}
+
+{% block mediagoblin_content %}
+
+<h1>{% trans %}Authorize{% endtrans %}</h1>
+
+<p>
+    {% trans %}You are logged in as{% endtrans %}
+     <strong>{{user.username}}</strong>
+    <br /><br />
+    
+    {% trans %}Do you want to authorize {% endtrans %}
+    {% if client.application_name -%}
+        <em>{{ client.application_name }}</em>
+    {%- else -%}
+        <em>{% trans %}an unknown application{% endtrans %}</em>
+    {%- endif %}
+    {% trans %} to access your account? {% endtrans %}
+    <br /><br />
+    {% trans %}Applications with access to your account can: {% endtrans %}
+    <ul>
+        <li>{% trans %}Post new media as you{% endtrans %}</li>
+        <li>{% trans %}See your information (e.g profile, meida, etc...){% endtrans %}</li>
+        <li>{% trans %}Change your information{% endtrans %}</li>
+    </ul>
+    <br />
+
+    <form method="POST">
+        {{ csrf_token }}
+        {{ authorize_form.oauth_token }}
+        {{ authorize_form.oauth_verifier }}
+        <input type="submit" value="{% trans %}Authorize{% endtrans %}">
+    </form>
+</p>
+{% endblock %}

mediagoblin/templates/mediagoblin/api/oob.html

@@ -0,0 +1,33 @@
+{#
+# GNU MediaGoblin -- federated, autonomous media hosting
+# Copyright (C) 2011, 2012 MediaGoblin contributors.  See AUTHORS.
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+#}
+{% extends "mediagoblin/base.html" %}
+
+{% block title -%}
+  {% trans %}Authorization Finished{% endtrans %} &mdash; {{ super() }}
+{%- endblock %}
+
+{% block mediagoblin_content %}
+
+<h1>{% trans %}Authorization Complete{% endtrans %}</h1>
+
+<h4>{% trans %}Copy and paste this into your client:{% endtrans %}</h4>
+
+<p class="verifier">
+   {{ oauth_request.verifier }}
+</p>
+{% endblock %}

mediagoblin/tests/test_http_callback.py

@@ -23,7 +23,7 @@ from mediagoblin import mg_globals
 from mediagoblin.tools import processing
 from mediagoblin.tests.tools import fixture_add_user
 from mediagoblin.tests.test_submission import GOOD_PNG
-from mediagoblin.tests import test_oauth as oauth
+from mediagoblin.tests import test_oauth2 as oauth
 
 
 class TestHTTPCallback(object):
@@ -44,7 +44,7 @@ class TestHTTPCallback(object):
             'password': self.user_password})
 
     def get_access_token(self, client_id, client_secret, code):
-        response = self.test_app.get('/oauth/access_token', {
+        response = self.test_app.get('/oauth-2/access_token', {
                 'code': code,
                 'client_id': client_id,
                 'client_secret': client_secret})

mediagoblin/tests/test_oauth1.py

@@ -0,0 +1,166 @@
+# GNU MediaGoblin -- federated, autonomous media hosting
+# Copyright (C) 2011, 2012 MediaGoblin contributors.  See AUTHORS.
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+import cgi
+
+import pytest
+from urlparse import parse_qs, urlparse
+
+from oauthlib.oauth1 import Client
+
+from mediagoblin import mg_globals
+from mediagoblin.tools import template, pluginapi
+from mediagoblin.tests.tools import fixture_add_user
+
+
+class TestOAuth(object):
+
+    MIME_FORM = "application/x-www-form-urlencoded"
+    MIME_JSON = "application/json"
+
+    @pytest.fixture(autouse=True)
+    def setup(self, test_app):
+        self.test_app = test_app
+
+        self.db = mg_globals.database
+
+        self.pman = pluginapi.PluginManager()
+
+        self.user_password = "AUserPassword123"
+        self.user = fixture_add_user("OAuthy", self.user_password)
+
+        self.login()
+
+    def login(self):
+        self.test_app.post(
+            "/auth/login/", {
+                "username": self.user.username,
+                "password": self.user_password})
+
+    def register_client(self, **kwargs):
+        """ Regiters a client with the API """
+        
+        kwargs["type"] = "client_associate"        
+        kwargs["application_type"] = kwargs.get("application_type", "native")
+        return self.test_app.post("/api/client/register", kwargs)
+
+    def test_client_client_register_limited_info(self):
+        """ Tests that a client can be registered with limited information """
+        response = self.register_client()
+        client_info = response.json
+
+        client = self.db.Client.query.filter_by(id=client_info["client_id"]).first()
+        
+        assert response.status_int == 200
+        assert client is not None
+
+    def test_client_register_full_info(self):
+        """ Provides every piece of information possible to register client """
+        query = {
+                "application_name": "Testificate MD",
+                "application_type": "web",
+                "contacts": "someone@someplace.com tuteo@tsengeo.lu",
+                "logo_url": "http://ayrel.com/utral.png",
+                "redirect_uris": "http://navi-kosman.lu http://gmg-yawne-oeru.lu",
+                }
+
+        response = self.register_client(**query)
+        client_info = response.json
+
+        client = self.db.Client.query.filter_by(id=client_info["client_id"]).first()
+        
+        assert client is not None
+        assert client.secret == client_info["client_secret"]
+        assert client.application_type == query["application_type"]
+        assert client.redirect_uri == query["redirect_uris"].split()
+        assert client.logo_url == query["logo_url"]
+        assert client.contacts == query["contacts"].split()
+
+
+    def test_client_update(self):
+        """ Tests that you can update a client """
+        # first we need to register a client
+        response = self.register_client()
+
+        client_info = response.json
+        client = self.db.Client.query.filter_by(id=client_info["client_id"]).first()
+
+        # Now update
+        update_query = {
+                "type": "client_update",
+                "application_name": "neytiri",
+                "contacts": "someone@someplace.com abc@cba.com",
+                "logo_url": "http://place.com/picture.png",
+                "application_type": "web",
+                "redirect_uris": "http://blah.gmg/whatever https://inboxen.org/",
+                }
+
+        update_response = self.register_client(**update_query)
+
+        assert update_response.status_int == 200
+        client_info = update_response.json
+        client = self.db.Client.query.filter_by(id=client_info["client_id"]).first()
+
+        assert client.secret == client_info["client_secret"]
+        assert client.application_type == update_query["application_type"]
+        assert client.application_name == update_query["application_name"]
+        assert client.contacts == update_query["contacts"].split()
+        assert client.logo_url == update_query["logo_url"]
+        assert client.redirect_uri == update_query["redirect_uris"].split()
+
+    def to_authorize_headers(self, data):
+        headers = ""
+        for key, value in data.items():
+            headers += '{0}="{1}",'.format(key, value)
+        return {"Authorization": "OAuth " + headers[:-1]}
+
+    def test_request_token(self):
+        """ Test a request for a request token """
+        response = self.register_client()
+
+        client_id = response.json["client_id"]
+
+        endpoint = "/oauth/request_token"
+        request_query = {
+                "oauth_consumer_key": client_id,
+                "oauth_nonce": "abcdefghij",
+                "oauth_timestamp": 123456789.0,
+                "oauth_callback": "https://some.url/callback",
+                }
+
+        headers = self.to_authorize_headers(request_query)
+
+        headers["Content-Type"] = self.MIME_FORM
+
+        response = self.test_app.post(endpoint, headers=headers)
+        response = cgi.parse_qs(response.body)
+
+        # each element is a list, reduce it to a string
+        for key, value in response.items():
+            response[key] = value[0]
+
+        request_token = self.db.RequestToken.query.filter_by(
+                token=response["oauth_token"]
+                ).first()
+
+        client = self.db.Client.query.filter_by(id=client_id).first()
+
+        assert request_token is not None
+        assert request_token.secret == response["oauth_token_secret"]
+        assert request_token.client == client.id
+        assert request_token.used == False
+        assert request_token.callback == request_query["oauth_callback"]
+        

mediagoblin/tests/test_oauth2.py

@@ -51,7 +51,7 @@ class TestOAuth(object):
     def register_client(self, name, client_type, description=None,
                         redirect_uri=''):
         return self.test_app.post(
-                '/oauth/client/register', {
+                '/oauth-2/client/register', {
                     'name': name,
                     'description': description,
                     'type': client_type,
@@ -115,7 +115,7 @@ class TestOAuth(object):
         client_identifier = client.identifier
 
         redirect_uri = 'https://foo.example'
-        response = self.test_app.get('/oauth/authorize', {
+        response = self.test_app.get('/oauth-2/authorize', {
                 'client_id': client.identifier,
                 'scope': 'all',
                 'redirect_uri': redirect_uri})
@@ -129,7 +129,7 @@ class TestOAuth(object):
 
         # Short for client authorization post reponse
         capr = self.test_app.post(
-                '/oauth/client/authorize', {
+                '/oauth-2/client/authorize', {
                     'client_id': form.client_id.data,
                     'allow': 'Allow',
                     'next': form.next.data})
@@ -155,7 +155,7 @@ class TestOAuth(object):
         client = self.db.OAuthClient.query.filter(
                 self.db.OAuthClient.identifier == unicode(client_id)).first()
 
-        token_res = self.test_app.get('/oauth/access_token?client_id={0}&\
+        token_res = self.test_app.get('/oauth-2/access_token?client_id={0}&\
 code={1}&client_secret={2}'.format(client_id, code, client.secret))
 
         assert token_res.status_int == 200
@@ -183,7 +183,7 @@ code={1}&client_secret={2}'.format(client_id, code, client.secret))
         client = self.db.OAuthClient.query.filter(
                 self.db.OAuthClient.identifier == unicode(client_id)).first()
 
-        token_res = self.test_app.get('/oauth/access_token?\
+        token_res = self.test_app.get('/oauth-2/access_token?\
 code={0}&client_secret={1}'.format(code, client.secret))
 
         assert token_res.status_int == 200
@@ -204,7 +204,7 @@ code={0}&client_secret={1}'.format(code, client.secret))
         client = self.db.OAuthClient.query.filter(
             self.db.OAuthClient.identifier == client_id).first()
 
-        token_res = self.test_app.get('/oauth/access_token',
+        token_res = self.test_app.get('/oauth-2/access_token',
                      {'refresh_token': token_data['refresh_token'],
                       'client_id': client_id,
                       'client_secret': client.secret

mediagoblin/tools/crypto.py

@@ -14,6 +14,8 @@
 # You should have received a copy of the GNU Affero General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
+import base64
+import string
 import errno
 import itsdangerous
 import logging
@@ -24,6 +26,9 @@ from mediagoblin import mg_globals
 
 _log = logging.getLogger(__name__)
 
+# produces base64 alphabet
+alphabet = string.ascii_letters + "-_"
+base = len(alphabet)
 
 # Use the system (hardware-based) random number generator if it exists.
 # -- this optimization is lifted from Django
@@ -111,3 +116,13 @@ def get_timed_signer_url(namespace):
     assert __itsda_secret is not None
     return itsdangerous.URLSafeTimedSerializer(__itsda_secret,
          salt=namespace)
+
+def random_string(length):
+    """ Returns a URL safe base64 encoded crypographically strong string """
+    rstring = ""
+    for i in range(length):
+        n = getrandbits(6) # 6 bytes = 2^6 = 64
+        n = divmod(n, base)[1]
+        rstring += alphabet[n]
+
+    return rstring

mediagoblin/tools/request.py

@@ -14,12 +14,18 @@
 # You should have received a copy of the GNU Affero General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
+import json
 import logging
 from mediagoblin.db.models import User
 
 _log = logging.getLogger(__name__)
 
 
+# MIME-Types
+form_encoded = "application/x-www-form-urlencoded"
+json_encoded = "application/json"
+
+
 def setup_user_in_request(request):
     """
     Examine a request and tack on a request.user parameter if that's
@@ -36,3 +42,15 @@ def setup_user_in_request(request):
         # this session.
         _log.warn("Killing session for user id %r", request.session['user_id'])
         request.session.delete()
+
+def decode_request(request):
+    """ Decodes a request based on MIME-Type """
+    data = request.get_data()
+    
+    if request.content_type == json_encoded:
+        data = json.loads(data)
+    elif request.content_type == form_encoded or request.content_type == "":
+        data = request.form
+    else:
+        data = ""
+    return data

mediagoblin/tools/response.py

@@ -14,6 +14,8 @@
 # You should have received a copy of the GNU Affero General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
+import json
+
 import werkzeug.utils
 from werkzeug.wrappers import Response as wz_Response
 from mediagoblin.tools.template import render_template
@@ -31,7 +33,6 @@ def render_to_response(request, template, context, status=200):
         render_template(request, template, context),
         status=status)
 
-
 def render_error(request, status=500, title=_('Oops!'),
                  err_msg=_('An error occured')):
     """Render any error page with a given error code, title and text body
@@ -44,6 +45,14 @@ def render_error(request, status=500, title=_('Oops!'),
         {'err_code': status, 'title': title, 'err_msg': err_msg}),
         status=status)
 
+def render_400(request, err_msg=None):
+    """ Render a standard 400 page"""
+    _ = pass_to_ugettext
+    title = _("Bad Request")
+    if err_msg is None:
+        err_msg = _("The request sent to the server is invalid, please double check it")
+
+    return render_error(request, 400, title, err_msg)
 
 def render_403(request):
     """Render a standard 403 page"""
@@ -106,3 +115,45 @@ def redirect_obj(request, obj):
 
     Requires obj to have a .url_for_self method."""
     return redirect(request, location=obj.url_for_self(request.urlgen))
+
+def json_response(serializable, _disable_cors=False, *args, **kw):
+    '''
+    Serializes a json objects and returns a werkzeug Response object with the
+    serialized value as the response body and Content-Type: application/json.
+
+    :param serializable: A json-serializable object
+
+    Any extra arguments and keyword arguments are passed to the
+    Response.__init__ method.
+    '''
+    
+    response = wz_Response(json.dumps(serializable), *args, content_type='application/json', **kw)
+
+    if not _disable_cors:
+        cors_headers = {
+                'Access-Control-Allow-Origin': '*',
+                'Access-Control-Allow-Methods': 'POST, GET, OPTIONS',
+                'Access-Control-Allow-Headers': 'Content-Type, X-Requested-With'}
+        for key, value in cors_headers.iteritems():
+            response.headers.set(key, value)
+
+    return response
+
+def form_response(data, *args, **kwargs):
+    """
+        Responds using application/x-www-form-urlencoded and returns a werkzeug
+        Response object with the data argument as the body
+        and 'application/x-www-form-urlencoded' as the Content-Type.
+
+        Any extra arguments and keyword arguments are passed to the
+        Response.__init__ method.
+    """
+
+    response = wz_Response(
+            data,
+            content_type="application/x-www-form-urlencoded",
+            *args,
+            **kwargs
+            )
+
+    return response

mediagoblin/tools/validator.py

@@ -0,0 +1,46 @@
+# GNU MediaGoblin -- federated, autonomous media hosting
+# Copyright (C) 2011, 2012 MediaGoblin contributors.  See AUTHORS.
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+from wtforms.validators import Email, URL
+
+def validate_email(email):
+    """ 
+        Validates an email 
+    
+        Returns True if valid and False if invalid
+    """
+
+    email_re = Email().regex
+    result = email_re.match(email)
+    if result is None:
+        return False
+    else:
+        return result.string
+
+def validate_url(url):
+    """
+        Validates a url
+
+        Returns True if valid and False if invalid
+    """
+
+    url_re = URL().regex
+    result = url_re.match(url)
+    if result is None:
+        return False
+    else:
+        return result.string
+