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# vim: tabstop=4 shiftwidth=4 softtabstop=4
# this is the web service frontend
import json
import logging
import routes
import webob.dec
import webob.exc
from keystonelight import identity
from keystonelight import token
from keystonelight import utils
from keystonelight import wsgi
class BaseApplication(wsgi.Application):
@webob.dec.wsgify
def __call__(self, req):
arg_dict = req.environ['wsgiorg.routing_args'][1]
action = arg_dict['action']
del arg_dict['action']
del arg_dict['controller']
logging.debug('arg_dict: %s', arg_dict)
context = req.environ.get('openstack.context', {})
# allow middleware up the stack to override the params
params = {}
if 'openstack.params' in req.environ:
params = req.environ['openstack.params']
params.update(arg_dict)
# TODO(termie): do some basic normalization on methods
method = getattr(self, action)
# NOTE(vish): make sure we have no unicode keys for py2.6.
params = dict([(str(k), v) for (k, v) in params.iteritems()])
result = method(context, **params)
if result is None or type(result) is str or type(result) is unicode:
return result
return json.dumps(result)
class TokenAuthMiddleware(wsgi.Middleware):
def process_request(self, request):
token = request.headers.get('X-Auth-Token')
context = request.environ.get('openstack.context', {})
context['token_id'] = token
request.environ['openstack.context'] = context
class AdminTokenAuthMiddleware(wsgi.Middleware):
"""A trivial filter that checks for a pre-defined admin token.
Sets 'is_admin' to true in the context, expected to be checked by
methods that are admin-only.
"""
def process_request(self, request):
token = request.headers.get('X-Auth-Token')
context = request.environ.get('openstack.context', {})
context['is_admin'] = (token == self.options['admin_token'])
request.environ['openstack.context'] = context
class PostParamsMiddleware(wsgi.Middleware):
"""Middleware to allow method arguments to be passed as POST parameters.
Filters out the parameters `self`, `context` and anything beginning with
an underscore.
"""
def process_request(self, request):
params_parsed = request.params
params = {}
for k, v in params_parsed.iteritems():
if k in ('self', 'context'):
continue
if k.startswith('_'):
continue
params[k] = v
request.environ['openstack.params'] = params
class JsonBodyMiddleware(wsgi.Middleware):
"""Middleware to allow method arguments to be passed as serialized JSON.
Accepting arguments as JSON is useful for accepting data that may be more
complex than simple primitives.
In this case we accept it as urlencoded data under the key 'json' as in
json=<urlencoded_json> but this could be extended to accept raw JSON
in the POST body.
Filters out the parameters `self`, `context` and anything beginning with
an underscore.
"""
def process_request(self, request):
#if 'json' not in request.params:
# return
params_json = request.body
if not params_json:
return
params_parsed = json.loads(params_json)
params = {}
for k, v in params_parsed.iteritems():
if k in ('self', 'context'):
continue
if k.startswith('_'):
continue
params[k] = v
request.environ['openstack.params'] = params
class TokenController(BaseApplication):
"""Validate and pass through calls to TokenManager."""
def __init__(self, options):
self.token_api = token.Manager(options=options)
self.options = options
def validate_token(self, context, token_id):
token_info = self.token_api.validate_token(context, token_id)
if not token_info:
raise webob.exc.HTTPUnauthorized()
return token_info
class IdentityController(BaseApplication):
"""Validate and pass calls through to IdentityManager.
IdentityManager will also pretty much just pass calls through to
a specific driver.
"""
def __init__(self, options):
self.identity_api = identity.Manager(options=options)
self.token_api = token.Manager(options=options)
self.options = options
def authenticate(self, context, **kwargs):
tenant, user, extras = self.identity_api.authenticate(context,
**kwargs)
token = self.token_api.create_token(context,
dict(tenant=tenant,
user=user,
extras=extras))
logging.debug('TOKEN: %s', token)
return token
def get_tenants(self, context):
token_id = context.get('token')
token = self.token_api.validate_token(context, token_id)
return self.identity_api.get_tenants(context,
user_id=token['user'])
class Router(wsgi.Router):
def __init__(self, options):
self.options = options
token_controller = utils.import_object(
options['token_controller'],
options=options)
identity_controller = utils.import_object(
options['identity_controller'],
options=options)
mapper = routes.Mapper()
mapper.connect('/v2.0/tokens', controller=identity_controller,
action='authenticate')
mapper.connect('/v2.0/tokens/{token_id}', controller=token_controller,
action='revoke_token',
conditions=dict(method=['DELETE']))
mapper.connect("/v2.0/tenants", controller=identity_controller,
action="get_tenants", conditions=dict(method=["GET"]))
super(Router, self).__init__(mapper)
class AdminRouter(wsgi.Router):
def __init__(self, options):
self.options = options
token_controller = utils.import_object(
options['token_controller'],
options=options)
identity_controller = utils.import_object(
options['identity_controller'],
options=options)
mapper = routes.Mapper()
mapper.connect('/v2.0/tokens', controller=identity_controller,
action='authenticate')
mapper.connect('/v2.0/tokens/{token_id}', controller=token_controller,
action='validate_token',
conditions=dict(method=['GET']))
mapper.connect('/v2.0/tokens/{token_id}', controller=token_controller,
action='revoke_token',
conditions=dict(method=['DELETE']))
super(AdminRouter, self).__init__(mapper)
def identity_app_factory(global_conf, **local_conf):
conf = global_conf.copy()
conf.update(local_conf)
return Router(conf)
def app_factory(global_conf, **local_conf):
conf = global_conf.copy()
conf.update(local_conf)
return Router(conf)
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