Synnefo

# Copyright 2011-2013 GRNET S.A. All rights reserved.

#

# Redistribution and use in source and binary forms, with or

# without modification, are permitted provided that the following

# conditions are met:

#

#   1. Redistributions of source code must retain the above

#      copyright notice, this list of conditions and the following

#      disclaimer.

#

#   2. Redistributions in binary form must reproduce the above

#      copyright notice, this list of conditions and the following

#      disclaimer in the documentation and/or other materials

#      provided with the distribution.

#

# THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``AS IS'' AND ANY EXPRESS

# OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED

# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR

# PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GRNET S.A OR

# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,

# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT

# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF

# USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED

# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT

# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN

# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE

# POSSIBILITY OF SUCH DAMAGE.

#

# The views and conclusions contained in the software and

# documentation are those of the authors and should not be

# interpreted as representing official policies, either expressed

# or implied, of GRNET S.A.

from collections import defaultdict

from django.views.decorators.csrf import csrf_exempt

from snf_django.lib.api import faults, utils, api_method

from astakos.im.models import Service, AstakosUser

from .util import json_response, xml_response, validate_user,\

    get_content_length

import logging

logger = logging.getLogger(__name__)

@csrf_exempt

@api_method(http_method="POST", token_required=False, user_required=False,

            logger=logger)

def authenticate(request):

    try:

        content_length = get_content_length(request)

    except faults.LengthRequired:

        content_length = None

    public_mode = True if not content_length else False

    d = defaultdict(dict)

    if not public_mode:

        req = utils.get_request_dict(request)

        uuid = None

        try:

            token_id = req['auth']['token']['id']

        except KeyError:

            try:

                token_id = req['auth']['passwordCredentials']['password']

                uuid = req['auth']['passwordCredentials']['username']

            except KeyError:

                raise faults.BadRequest(

                    'Malformed request: missing credentials')

        tenant = req['auth'].get('tenantName')

        if token_id is None:

            raise faults.BadRequest('Malformed request: missing token')

        try:

            user = AstakosUser.objects.get(auth_token=token_id)

        except AstakosUser.DoesNotExist:

            raise faults.Unauthorized('Invalid token')

        validate_user(user)

        if uuid is not None:

            if user.uuid != uuid:

                raise faults.Unauthorized('Invalid credentials')

        if tenant is not None:

            if user.uuid != tenant:

                raise faults.BadRequest('Not conforming tenantName')

        d["access"]["token"] = {

            "id": user.auth_token,

            "expires": utils.isoformat(user.auth_token_expires),

            "tenant": {"id": user.uuid, "name": user.realname}}

        d["access"]["user"] = {

            "id": user.uuid, 'name': user.realname,

            "roles": list(user.groups.values("id", "name")),

            "roles_links": []}

    d["access"]["serviceCatalog"] = []

    append = d["access"]["serviceCatalog"].append

    for s in Service.objects.all().order_by("id"):

        endpoints = []

        for l in [e.data.values('key', 'value') for e in s.endpoints.all()]:

            endpoint = dict((d['key'], d['value']) for d in l)

            endpoint["SNF:uiURL"] = s.component.url

            if s.name == 'astakos_weblogin':

                endpoint["SNF:webloginURL"] = endpoint["publicURL"]

            endpoints.append(endpoint)

        append({"name": s.name,

                "type": s.type,

                "endpoints": endpoints,

                "endpoints_links": []})

    if request.serialization == 'xml':

        return xml_response({'d': d}, 'api/access.xml')

    else:

        return json_response(d)