Synnefo

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

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# without modification, are permitted provided that the following

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#      copyright notice, this list of conditions and the following

#      disclaimer.

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#   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.

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

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# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR

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from functools import wraps

from time import time, mktime

from django.http import HttpResponse

from django.utils import simplejson as json

from astakos.im.models import AstakosUser, Service

from snf_django.lib.api import faults

from astakos.im.forms import FeedbackForm

from astakos.im.functions import send_feedback as send_feedback_func

import logging

logger = logging.getLogger(__name__)

absolute = lambda request, url: request.build_absolute_uri(url)

def json_response(content, status_code=None):

    response = HttpResponse()

    if status_code is not None:

        response.status_code = status_code

    response.content = json.dumps(content)

    response['Content-Type'] = 'application/json; charset=UTF-8'

    response['Content-Length'] = len(response.content)

    return response

def is_integer(x):

    return isinstance(x, (int, long))

def are_integer(lst):

    return all(map(is_integer, lst))

def user_from_token(func):

    @wraps(func)

    def wrapper(request, *args, **kwargs):

        try:

            token = request.x_auth_token

        except AttributeError:

            raise faults.Unauthorized("No authentication token")

        if not token:

            raise faults.Unauthorized("Invalid X-Auth-Token")

        try:

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

        except AstakosUser.DoesNotExist:

            raise faults.Unauthorized('Invalid X-Auth-Token')

        return func(request, user, *args, **kwargs)

    return wrapper

def service_from_token(func):

    """Decorator for authenticating service by it's token.

    Check that a service with the corresponding token exists. Also,

    if service's token has an expiration token, check that it has not

    expired.

    """

    @wraps(func)

    def wrapper(request, *args, **kwargs):

        try:

            token = request.x_auth_token

        except AttributeError:

            raise faults.Unauthorized("No authentication token")

        if not token:

            raise faults.Unauthorized("Invalid X-Auth-Token")

        try:

            service = Service.objects.get(auth_token=token)

        except Service.DoesNotExist:

            raise faults.Unauthorized("Invalid X-Auth-Token")

        # Check if the token has expired

        expiration_date = service.auth_token_expires

        if expiration_date:

            expires_at = mktime(expiration_date.timetuple())

            if time() > expires_at:

                raise faults.Unauthorized("Authentication expired")

        request.service_instance = service

        return func(request, *args, **kwargs)

    return wrapper

def __get_uuid_displayname_catalogs(request, user_call=True):

    # Normal Response Codes: 200

    # Error Response Codes: BadRequest (400)

    try:

        input_data = json.loads(request.raw_post_data)

    except:

        raise faults.BadRequest('Request body should be json formatted.')

    else:

        uuids = input_data.get('uuids', [])

        if uuids is None and user_call:

            uuids = []

        displaynames = input_data.get('displaynames', [])

        if displaynames is None and user_call:

            displaynames = []

        user_obj = AstakosUser.objects

        d = {'uuid_catalog': user_obj.uuid_catalog(uuids),

             'displayname_catalog': user_obj.displayname_catalog(displaynames)}

        response = HttpResponse()

        response.content = json.dumps(d)

        response['Content-Type'] = 'application/json; charset=UTF-8'

        response['Content-Length'] = len(response.content)

        return response

def __send_feedback(request, email_template_name='im/feedback_mail.txt',

                    user=None):

    if not user:

        auth_token = request.POST.get('auth', '')

        if not auth_token:

            raise faults.BadRequest('Missing user authentication')

        try:

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

        except AstakosUser.DoesNotExist:

            raise faults.BadRequest('Invalid user authentication')

    form = FeedbackForm(request.POST)

    if not form.is_valid():

        logger.error("Invalid feedback request: %r", form.errors)

        raise faults.BadRequest('Invalid data')

    msg = form.cleaned_data['feedback_msg']

    data = form.cleaned_data['feedback_data']

    try:

        send_feedback_func(msg, data, user, email_template_name)

    except:

        return HttpResponse(status=502)

    return HttpResponse(status=200)