code.grnet.gr Git - astakos/blob - snf-astakos-app/astakos/im/api/__init__.py

   1 # Copyright 2011-2012 GRNET S.A. All rights reserved.
   2 #
   3 # Redistribution and use in source and binary forms, with or
   4 # without modification, are permitted provided that the following
   5 # conditions are met:
   6 #
   7 #   1. Redistributions of source code must retain the above
   8 #      copyright notice, this list of conditions and the following
   9 #      disclaimer.
  10 #
  11 #   2. Redistributions in binary form must reproduce the above
  12 #      copyright notice, this list of conditions and the following
  13 #      disclaimer in the documentation and/or other materials
  14 #      provided with the distribution.
  15 #
  16 # THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``AS IS'' AND ANY EXPRESS
  17 # OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  18 # WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  19 # PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GRNET S.A OR
  20 # CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  21 # SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  22 # LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
  23 # USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
  24 # AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  25 # LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
  26 # ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  27 # POSSIBILITY OF SUCH DAMAGE.
  28 #
  29 # The views and conclusions contained in the software and
  30 # documentation are those of the authors and should not be
  31 # interpreted as representing official policies, either expressed
  32 # or implied, of GRNET S.A.
  33
  34 from functools import wraps
  35 from traceback import format_exc
  36 from urllib import quote, unquote
  37
  38 from django.http import HttpResponse
  39 from django.utils import simplejson as json
  40 from django.conf import settings
  41 from django.core.urlresolvers import reverse
  42
  43 from astakos.im.models import AstakosUser, GroupKind, Service, Resource
  44 from astakos.im.api.faults import Fault, ItemNotFound, InternalServerError, BadRequest
  45 from astakos.im.settings import INVITATIONS_ENABLED, COOKIE_NAME, EMAILCHANGE_ENABLED
  46
  47 import logging
  48 logger = logging.getLogger(__name__)
  49
  50 format = ('%a, %d %b %Y %H:%M:%S GMT')
  51
  52 absolute = lambda request, url: request.build_absolute_uri(url)
  53
  54
  55 def render_fault(request, fault):
  56     if isinstance(fault, InternalServerError) and settings.DEBUG:
  57         fault.details = format_exc(fault)
  58
  59     request.serialization = 'text'
  60     data = fault.message + '\n'
  61     if fault.details:
  62         data += '\n' + fault.details
  63     response = HttpResponse(data, status=fault.code)
  64     response['Content-Length'] = len(response.content)
  65     return response
  66
  67
  68 def api_method(http_method=None):
  69     """Decorator function for views that implement an API method."""
  70     def decorator(func):
  71         @wraps(func)
  72         def wrapper(request, *args, **kwargs):
  73             try:
  74                 if http_method and request.method != http_method:
  75                     raise BadRequest('Method not allowed.')
  76                 response = func(request, *args, **kwargs)
  77                 return response
  78             except Fault, fault:
  79                 return render_fault(request, fault)
  80             except BaseException, e:
  81                 logger.exception('Unexpected error: %s' % e)
  82                 fault = InternalServerError('Unexpected error')
  83                 return render_fault(request, fault)
  84         return wrapper
  85     return decorator
  86
  87
  88 def _get_user_by_username(user_id):
  89     try:
  90         user = AstakosUser.objects.get(username=user_id)
  91     except AstakosUser.DoesNotExist:
  92         raise ItemNotFound('Invalid userid')
  93     else:
  94         response = HttpResponse()
  95         response.status = 200
  96         user_info = {'id': user.id,
  97                      'username': user.username,
  98                      'email': [user.email],
  99                      'name': user.realname,
 100                      'auth_token_created': user.auth_token_created.strftime(format),
 101                      'auth_token_expires': user.auth_token_expires.strftime(format),
 102                      'has_credits': user.has_credits,
 103                      'enabled': user.is_active,
 104                      'groups': [g.name for g in user.groups.all()]}
 105         response.content = json.dumps(user_info)
 106         response['Content-Type'] = 'application/json; charset=UTF-8'
 107         response['Content-Length'] = len(response.content)
 108         return response
 109
 110
 111 def _get_user_by_email(email):
 112     if not email:
 113         raise BadRequest('Email missing')
 114     try:
 115         user = AstakosUser.objects.get(email=email)
 116     except AstakosUser.DoesNotExist:
 117         raise ItemNotFound('Invalid email')
 118
 119     if not user.is_active:
 120         raise ItemNotFound('Inactive user')
 121     else:
 122         response = HttpResponse()
 123         response.status = 200
 124         user_info = {'id': user.id,
 125                      'username': user.username,
 126                      'email': [user.email],
 127                      'enabled': user.is_active,
 128                      'name': user.realname,
 129                      'auth_token_created': user.auth_token_created.strftime(format),
 130                      'auth_token_expires': user.auth_token_expires.strftime(format),
 131                      'has_credits': user.has_credits,
 132                      'groups': [g.name for g in user.groups.all()],
 133                      'user_permissions': [p.codename for p in user.user_permissions.all()]}
 134         response.content = json.dumps(user_info)
 135         response['Content-Type'] = 'application/json; charset=UTF-8'
 136         response['Content-Length'] = len(response.content)
 137         return response
 138
 139
 140 @api_method(http_method='GET')
 141 def get_services(request):
 142     callback = request.GET.get('callback', None)
 143     services = Service.objects.all()
 144     data = tuple({'id': s.pk, 'name': s.name, 'url': s.url, 'icon':
 145                  s.icon} for s in services)
 146     data = json.dumps(data)
 147     mimetype = 'application/json'
 148
 149     if callback:
 150         mimetype = 'application/javascript'
 151         data = '%s(%s)' % (callback, data)
 152
 153     return HttpResponse(content=data, mimetype=mimetype)
 154
 155
 156 @api_method()
 157 def get_menu(request, with_extra_links=False, with_signout=True):
 158     user = request.user
 159     if not isinstance(user, AstakosUser):
 160         cookie = unquote(request.COOKIES.get(COOKIE_NAME, ''))
 161         email = cookie.partition('|')[0]
 162         try:
 163             if email:
 164                 user = AstakosUser.objects.get(email=email, is_active=True)
 165         except AstakosUser.DoesNotExist:
 166             pass
 167     if not isinstance(user, AstakosUser):
 168         index_url = reverse('index')
 169         l = [{'url': absolute(request, index_url), 'name': "Sign in"}]
 170     else:
 171         l = []
 172         append = l.append
 173         item = MenuItem
 174         item.current_path = absolute(request, request.path)
 175         append(item(
 176                url=absolute(request, reverse('index')),
 177                name=user.email))
 178         append(item(url=absolute(request, reverse('edit_profile')),
 179                name="My account"))
 180         if with_extra_links:
 181             if user.has_usable_password() and user.provider in ('local', ''):
 182                 append(item(
 183                        url=absolute(request, reverse('password_change')),
 184                        name="Change password"))
 185             if EMAILCHANGE_ENABLED:
 186                 append(item(
 187                        url=absolute(request, reverse('email_change')),
 188                        name="Change email"))
 189             if INVITATIONS_ENABLED:
 190                 append(item(
 191                        url=absolute(request, reverse('invite')),
 192                        name="Invitations"))
 193             append(item(
 194                    url=absolute(request, reverse('feedback')),
 195                    name="Feedback"))
 196             append(item(
 197                    url=absolute(request, reverse('group_list')),
 198                    name="Groups",
 199                    submenu=(item(
 200                             url=absolute(request,
 201                                          reverse('group_list')),
 202                             name="Overview"),
 203                             item(
 204                                 url=absolute(request,
 205                                              reverse('group_create_list')),
 206                                 name="Create"),
 207                             item(
 208                                 url=absolute(request,
 209                                              reverse('group_search')),
 210                                 name="Join"),)))
 211             append(item(
 212                    url=absolute(request, reverse('resource_list')),
 213                    name="Resources"))
 214             append(item(
 215                    url=absolute(request, reverse('billing')),
 216                    name="Billing"))
 217             append(item(
 218                    url=absolute(request, reverse('timeline')),
 219                    name="Timeline"))
 220         if with_signout:
 221             append(item(
 222                    url=absolute(request, reverse('logout')),
 223                    name="Sign out"))
 224
 225     callback = request.GET.get('callback', None)
 226     data = json.dumps(tuple(l))
 227     mimetype = 'application/json'
 228
 229     if callback:
 230         mimetype = 'application/javascript'
 231         data = '%s(%s)' % (callback, data)
 232
 233     return HttpResponse(content=data, mimetype=mimetype)
 234
 235
 236 class MenuItem(dict):
 237     current_path = ''
 238
 239     def __init__(self, *args, **kwargs):
 240         super(MenuItem, self).__init__(*args, **kwargs)
 241         if kwargs.get('url') or kwargs.get('submenu'):
 242             self.__set_is_active__()
 243
 244     def __setitem__(self, key, value):
 245         super(MenuItem, self).__setitem__(key, value)
 246         if key in ('url', 'submenu'):
 247             self.__set_is_active__()
 248
 249     def __set_is_active__(self):
 250         if self.get('is_active'):
 251             return
 252         if self.current_path == self.get('url'):
 253             self.__setitem__('is_active', True)
 254         else:
 255             submenu = self.get('submenu', ())
 256             current = (i for i in submenu if i.get('url') == self.current_path)
 257             try:
 258                 current_node = current.next()
 259                 if not current_node.get('is_active'):
 260                     current_node.__setitem__('is_active', True)
 261                 self.__setitem__('is_active', True)
 262             except StopIteration:
 263                 return
 264
 265     def __setattribute__(self, name, value):
 266         super(MenuItem, self).__setattribute__(name, value)
 267         if name == 'current_path':
 268             self.__set_is_active__()