Synnefo

# Copyright 2011-2012 GRNET S.A. All rights reserved.

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# without modification, are permitted provided that the following

# conditions are met:

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#   1. Redistributions of source code must retain the above

#      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

# 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,

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

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# The views and conclusions contained in the software and

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import logging

import urllib

from functools import wraps

from traceback import format_exc

from time import time, mktime

from urllib import quote

from urlparse import urlparse

from collections import defaultdict

from django.conf import settings

from django.http import HttpResponse

from django.core.urlresolvers import reverse

from django.views.decorators.csrf import csrf_exempt

from astakos.im.api.faults import *

from astakos.im.models import AstakosUser, Service

from astakos.im.settings import INVITATIONS_ENABLED, COOKIE_NAME, EMAILCHANGE_ENABLED

from astakos.im.util import epoch

from astakos.im.forms import FeedbackForm

from astakos.im.functions import send_feedback as send_feedback_func, SendMailError

logger = logging.getLogger(__name__)

def render_fault(request, fault):

    if isinstance(fault, InternalServerError) and settings.DEBUG:

        fault.details = format_exc(fault)

    request.serialization = 'text'

    data = fault.message + '\n'

    if fault.details:

        data += '\n' + fault.details

    response = HttpResponse(data, status=fault.code)

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

    return response

def api_method(http_method=None, token_required=False):

    """Decorator function for views that implement an API method."""

    def decorator(func):

        @wraps(func)

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

            try:

                if http_method and request.method != http_method:

                    raise BadRequest('Method not allowed.')

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

                if token_required:

                    if not x_auth_token:

                        raise Unauthorized('Access denied')

                    try:

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

                        # Check if the token has expired.

                        if (time() - mktime(service.auth_token_expires.timetuple())) > 0:

                            raise Unauthorized('Authentication expired')

                    except Service.DoesNotExist, e:

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

                response = func(request, *args, **kwargs)

                return response

            except Fault, fault:

                return render_fault(request, fault)

            except BaseException, e:

                logger.exception('Unexpected error: %s' % e)

                fault = InternalServerError('Unexpected error')

                return render_fault(request, fault)

        return wrapper

    return decorator

@api_method(http_method='GET', token_required=True)

def get_user_by_email(request, user=None):

    # Normal Response Codes: 200

    # Error Response Codes: internalServerError (500)

    #                       badRequest (400)

    #                       unauthorised (401)

    #                       forbidden (403)

    #                       itemNotFound (404)

    email = request.GET.get('name')

    return _get_user_by_email(email)

@api_method(http_method='GET', token_required=True)

def get_user_by_username(request, user_id, user=None):

    # Normal Response Codes: 200

    # Error Response Codes: internalServerError (500)

    #                       badRequest (400)

    #                       unauthorised (401)

    #                       forbidden (403)

    #                       itemNotFound (404)

    return _get_user_by_username(user_id)

@csrf_exempt

@api_method(http_method='POST', token_required=True)

def send_feedback(request, email_template_name='im/feedback_mail.txt'):

    # Normal Response Codes: 200

    # Error Response Codes: internalServerError (500)

    #                       badRequest (400)

    #                       unauthorised (401)

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

    if not auth_token:

        raise BadRequest('Missing user authentication')

    user  = None

    try:

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

    except:

        pass

    if not user:

        raise BadRequest('Invalid user authentication')

    form = FeedbackForm(request.POST)

    if not form.is_valid():

        raise BadRequest('Invalid data')

    msg = form.cleaned_data['feedback_msg']

    data = form.cleaned_data['feedback_data']

    send_feedback_func(msg, data, user, email_template_name)

    response = HttpResponse(status=200)

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

    return response