Synnefo

# Copyright 2011-2012 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.

import logging

from urlparse import urlparse

import urllib

import urllib2

from django.http import (

    HttpResponseNotFound, HttpResponseRedirect, HttpResponseBadRequest,

    HttpResponse)

from django.utils.http import urlencode

from django.views.decorators.csrf import csrf_exempt

from pithos.api.settings import (USER_LOGIN_URL, USER_FEEDBACK_URL,

                                 USER_CATALOG_URL)

from objpool.http import PooledHTTPConnection

logger = logging.getLogger(__name__)

def delegate_to_login_service(request):

    url = USER_LOGIN_URL

    if not url:

        return HttpResponseNotFound()

    p = urlparse(url)

    if request.is_secure():

        proto = 'https://'

    else:

        proto = 'http://'

    params = dict([(k, v) for k, v in request.GET.items()])

    uri = proto + p.netloc + p.path + '?' + urlencode(params)

    return HttpResponseRedirect(uri)

def proxy(request, url, headers=None, body=None):

    p = urlparse(url)

    kwargs = {}

    if headers is None:

        headers = {}

    kwargs["headers"] = headers

    kwargs['headers'].update(request.META)

    kwargs['body'] = body

    kwargs['headers'].setdefault('content-type', 'application/json')

    kwargs['headers'].setdefault('content-length', len(body) if body else 0)

    with PooledHTTPConnection(p.netloc, p.scheme) as conn:

        conn.request(request.method, p.path + '?' + p.query, **kwargs)

        response = conn.getresponse()

        length = response.getheader('content-length', None)

        data = response.read(length)

        status = int(response.status)

        return HttpResponse(data, status=status)

@csrf_exempt

def delegate_to_feedback_service(request):

    token = request.META.get('HTTP_X_AUTH_TOKEN')

    headers = {'X-Auth-Token': token}

    return proxy(

        request, USER_FEEDBACK_URL, headers=headers, body=request.raw_post_data)

@csrf_exempt

def delegate_to_user_catalogs_service(request):

    token = request.META.get('HTTP_X_AUTH_TOKEN')

    headers = {'X-Auth-Token': token, 'content-type': 'application/json'}

    return proxy(

        request, USER_CATALOG_URL, headers=headers, body=request.raw_post_data)