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 def render_fault(request, fault):
  55     if isinstance(fault, InternalServerError) and settings.DEBUG:
  56         fault.details = format_exc(fault)
  57
  58     request.serialization = 'text'
  59     data = fault.message + '\n'
  60     if fault.details:
  61         data += '\n' + fault.details
  62     response = HttpResponse(data, status=fault.code)
  63     response['Content-Length'] = len(response.content)
  64     return response
  65
  66 def api_method(http_method=None):
  67     """Decorator function for views that implement an API method."""
  68     def decorator(func):
  69         @wraps(func)
  70         def wrapper(request, *args, **kwargs):
  71             try:
  72                 if http_method and request.method != http_method:
  73                     raise BadRequest('Method not allowed.')
  74                 response = func(request, *args, **kwargs)
  75                 return response
  76             except Fault, fault:
  77                 return render_fault(request, fault)
  78             except BaseException, e:
  79                 logger.exception('Unexpected error: %s' % e)
  80                 fault = InternalServerError('Unexpected error')
  81                 return render_fault(request, fault)
  82         return wrapper
  83     return decorator
  84
  85 def _get_user_by_username(user_id):
  86     try:
  87         user = AstakosUser.objects.get(username = user_id)
  88     except AstakosUser.DoesNotExist:
  89         raise ItemNotFound('Invalid userid')
  90     else:
  91         response = HttpResponse()
  92         response.status=200
  93         user_info = {'id':user.id,
  94                      'username':user.username,
  95                      'email':[user.email],
  96                      'name':user.realname,
  97                      'auth_token_created':user.auth_token_created.strftime(format),
  98                      'auth_token_expires':user.auth_token_expires.strftime(format),
  99                      'has_credits':user.has_credits,
 100                      'enabled':user.is_active,
 101                      'groups':[g.name for g in user.groups.all()]}
 102         response.content = json.dumps(user_info)
 103         response['Content-Type'] = 'application/json; charset=UTF-8'
 104         response['Content-Length'] = len(response.content)
 105         return response
 106
 107 def _get_user_by_email(email):
 108     if not email:
 109         raise BadRequest('Email missing')
 110     try:
 111         user = AstakosUser.objects.get(email = email)
 112     except AstakosUser.DoesNotExist:
 113         raise ItemNotFound('Invalid email')
 114
 115     if not user.is_active:
 116         raise ItemNotFound('Inactive user')
 117     else:
 118         response = HttpResponse()
 119         response.status=200
 120         user_info = {'id':user.id,
 121                      'username':user.username,
 122                      'email':[user.email],
 123                      'enabled':user.is_active,
 124                      'name':user.realname,
 125                      'auth_token_created':user.auth_token_created.strftime(format),
 126                      'auth_token_expires':user.auth_token_expires.strftime(format),
 127                      'has_credits':user.has_credits,
 128                      'groups':[g.name for g in user.groups.all()],
 129                      'user_permissions':[p.codename for p in user.user_permissions.all()]}
 130         response.content = json.dumps(user_info)
 131         response['Content-Type'] = 'application/json; charset=UTF-8'
 132         response['Content-Length'] = len(response.content)
 133         return response
 134
 135 @api_method(http_method='GET')
 136 def get_services(request):
 137     callback = request.GET.get('callback', None)
 138     services = Service.objects.all()
 139     data = tuple({'id':s.pk, 'name':s.name, 'url':s.url, 'icon':s.icon} for s in services)
 140     data = json.dumps(data)
 141     mimetype = 'application/json'
 142
 143     if callback:
 144         mimetype = 'application/javascript'
 145         data = '%s(%s)' % (callback, data)
 146
 147     return HttpResponse(content=data, mimetype=mimetype)
 148
 149 @api_method()
 150 def get_menu(request, with_extra_links=False, with_signout=True):
 151     user = request.user
 152     if not isinstance(user, AstakosUser):
 153         cookie = unquote(request.COOKIES.get(COOKIE_NAME, ''))
 154         email = cookie.partition('|')[0]
 155         try:
 156             if email:
 157                 user = AstakosUser.objects.get(email=email, is_active=True)
 158         except AstakosUser.DoesNotExist:
 159             pass
 160     if not isinstance(user, AstakosUser):
 161         index_url = reverse('index')
 162         l = [{ 'url': absolute(request, index_url), 'name': "Sign in"}]
 163     else:
 164         l = []
 165         append = l.append
 166         item = MenuItem
 167         item.current_path = absolute(request, request.path)
 168         append(
 169             item(
 170                 url=absolute(request, reverse('index')),
 171                 name=user.email
 172             )
 173         )
 174         append(
 175             item(
 176                 url=absolute(request, reverse('edit_profile')),
 177                 name="My account"
 178             )
 179         )
 180         if with_extra_links:
 181             if user.has_usable_password() and user.provider in ('local', ''):
 182                 append(
 183                     item(
 184                         url=absolute(request, reverse('password_change')),
 185                         name="Change password"
 186                     )
 187                 )
 188             if EMAILCHANGE_ENABLED:
 189                 append(
 190                     item(
 191                         url=absolute(request, reverse('email_change')),
 192                         name="Change email"
 193                     )
 194                 )
 195             if INVITATIONS_ENABLED:
 196                 append(
 197                     item(
 198                         url=absolute(request, reverse('invite')),
 199                         name="Invitations"
 200                     )
 201                 )
 202             append(
 203                 item(
 204                     url=absolute(request, reverse('feedback')),
 205                     name="Feedback"
 206                 )
 207             )
 208             append(
 209                 item(
 210                     url=absolute(request, reverse('group_list')),
 211                     name="Groups",
 212                     submenu=(
 213                         item(
 214                             url=absolute(request, reverse('group_list')),
 215                             name="Overview"
 216                         ),
 217                         item(
 218                             url=absolute(request,
 219                                 reverse('group_create_list')
 220                             ),
 221                             name="Create"
 222                         ),
 223                         item(
 224                             url=absolute(request, reverse('group_search')),
 225                             name="Join"
 226                         ),
 227                     )
 228                 )
 229             )
 230             append(
 231                 item(
 232                     url=absolute(request, reverse('resource_list')),
 233                     name="Resources"
 234                 )
 235             )
 236             append(
 237                 item(
 238                     url=absolute(request, reverse('billing')),
 239                     name="Billing"
 240                 )
 241             )
 242         if with_signout:
 243             append(
 244                 item(
 245                     url=absolute(request, reverse('logout')),
 246                     name="Sign out"
 247                 )
 248             )
 249
 250     callback = request.GET.get('callback', None)
 251     data = json.dumps(tuple(l))
 252     mimetype = 'application/json'
 253
 254     if callback:
 255         mimetype = 'application/javascript'
 256         data = '%s(%s)' % (callback, data)
 257
 258     return HttpResponse(content=data, mimetype=mimetype)
 259
 260 class MenuItem(dict):
 261     current_path = ''
 262
 263     def __init__(self, *args, **kwargs):
 264         super(MenuItem, self).__init__(*args, **kwargs)
 265         if kwargs.get('url') or kwargs.get('submenu'):
 266             self.__set_is_active__()
 267
 268     def __setitem__(self, key, value):
 269         super(MenuItem, self).__setitem__(key, value)
 270         if key in ('url', 'submenu'):
 271             self.__set_is_active__()
 272
 273     def __set_is_active__(self):
 274         if self.get('is_active'):
 275             return
 276         if self.current_path == self.get('url'):
 277             self.__setitem__('is_active', True)
 278         else:
 279             submenu = self.get('submenu', ())
 280             current = (i for i in submenu if i.get('url') == self.current_path)
 281             try:
 282                 current_node = current.next()
 283                 if not current_node.get('is_active'):
 284                     current_node.__setitem__('is_active', True)
 285                 self.__setitem__('is_active', True)
 286             except StopIteration:
 287                 return
 288
 289     def __setattribute__(self, name, value):
 290         super(MenuItem, self).__setattribute__(name, value)
 291         if name == 'current_path':
 292             self.__set_is_active__()