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__iexact=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     index_url = reverse('index')
 160     l = [{'url': absolute(request, index_url), 'name': "Sign in"}]
 161     if user.is_authenticated():
 162         l = []
 163         append = l.append
 164         item = MenuItem
 165         item.current_path = absolute(request, request.path)
 166         append(item(
 167                url=absolute(request, reverse('index')),
 168                name=user.email))
 169         append(item(url=absolute(request, reverse('edit_profile')),
 170                name="My account"))
 171         if with_extra_links:
 172             if user.has_usable_password() and user.provider in ('local', ''):
 173                 append(item(
 174                        url=absolute(request, reverse('password_change')),
 175                        name="Change password"))
 176             if EMAILCHANGE_ENABLED:
 177                 append(item(
 178                        url=absolute(request, reverse('email_change')),
 179                        name="Change email"))
 180             if INVITATIONS_ENABLED:
 181                 append(item(
 182                        url=absolute(request, reverse('invite')),
 183                        name="Invitations"))
 184
 185             append(item(
 186                    url=absolute(request, reverse('group_list')),
 187                    name="Projects",
 188 #                    submenu=(item(
 189 #                             url=absolute(request,
 190 #                                          reverse('group_list')),
 191 #                             name="Overview"),
 192 #                             item(
 193 #                                 url=absolute(request,
 194 #                                              reverse('group_create_list')),
 195 #                                 name="Create"),
 196 #                             item(
 197 #                                 url=absolute(request,
 198 #                                              reverse('group_search')),
 199 #                                 name="Join"),
 200 #                     )
 201                 )
 202             )
 203             append(item(
 204                    url=absolute(request, reverse('resource_usage')),
 205                    name="Usage"))
 206             append(item(
 207                    url=absolute(request, reverse('feedback')),
 208                    name="Feedback"))
 209 #            append(item(
 210 #                   url=absolute(request, reverse('billing')),
 211 #                   name="Billing"))
 212 #            append(item(
 213 #                   url=absolute(request, reverse('timeline')),
 214 #                   name="Timeline"))
 215         if with_signout:
 216             append(item(
 217                    url=absolute(request, reverse('logout')),
 218                    name="Sign out"))
 219
 220     callback = request.GET.get('callback', None)
 221     data = json.dumps(tuple(l))
 222     mimetype = 'application/json'
 223
 224     if callback:
 225         mimetype = 'application/javascript'
 226         data = '%s(%s)' % (callback, data)
 227
 228     return HttpResponse(content=data, mimetype=mimetype)
 229
 230
 231 class MenuItem(dict):
 232     current_path = ''
 233
 234     def __init__(self, *args, **kwargs):
 235         super(MenuItem, self).__init__(*args, **kwargs)
 236         if kwargs.get('url') or kwargs.get('submenu'):
 237             self.__set_is_active__()
 238
 239     def __setitem__(self, key, value):
 240         super(MenuItem, self).__setitem__(key, value)
 241         if key in ('url', 'submenu'):
 242             self.__set_is_active__()
 243
 244     def __set_is_active__(self):
 245         if self.get('is_active'):
 246             return
 247         if self.current_path == self.get('url'):
 248             self.__setitem__('is_active', True)
 249         else:
 250             submenu = self.get('submenu', ())
 251             current = (i for i in submenu if i.get('url') == self.current_path)
 252             try:
 253                 current_node = current.next()
 254                 if not current_node.get('is_active'):
 255                     current_node.__setitem__('is_active', True)
 256                 self.__setitem__('is_active', True)
 257             except StopIteration:
 258                 return
 259
 260     def __setattribute__(self, name, value):
 261         super(MenuItem, self).__setattribute__(name, value)
 262         if name == 'current_path':
 263             self.__set_is_active__()