code.grnet.gr Git - astakos/blob - snf-astakos-app/astakos/im/api.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 import logging
  35 import urllib
  36
  37 from functools import wraps
  38 from traceback import format_exc
  39 from time import time, mktime
  40 from urllib import quote
  41 from urlparse import urlparse
  42
  43 from django.conf import settings
  44 from django.http import HttpResponse
  45 from django.utils import simplejson as json
  46 from django.core.urlresolvers import reverse
  47
  48 from astakos.im.faults import BadRequest, Unauthorized, InternalServerError, Fault
  49 from astakos.im.models import AstakosUser
  50 from astakos.im.settings import CLOUD_SERVICES, INVITATIONS_ENABLED, COOKIE_NAME
  51 from astakos.im.util import epoch
  52
  53 logger = logging.getLogger(__name__)
  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 def api_method(http_method=None, token_required=False, perms=[]):
  68     """Decorator function for views that implement an API method."""
  69
  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                 x_auth_token = request.META.get('HTTP_X_AUTH_TOKEN')
  77                 if token_required:
  78                     if not x_auth_token:
  79                         raise Unauthorized('Access denied')
  80                     try:
  81                         user = AstakosUser.objects.get(auth_token=x_auth_token)
  82                         if not user.has_perms(perms):
  83                             raise Unauthorized('Unauthorized request')
  84                     except AstakosUser.DoesNotExist, e:
  85                         raise Unauthorized('Invalid X-Auth-Token')
  86                     kwargs['user'] = user
  87                 response = func(request, *args, **kwargs)
  88                 return response
  89             except Fault, fault:
  90                 return render_fault(request, fault)
  91             except BaseException, e:
  92                 logger.exception('Unexpected error: %s' % e)
  93                 fault = InternalServerError('Unexpected error')
  94                 return render_fault(request, fault)
  95         return wrapper
  96     return decorator
  97
  98 @api_method(http_method='GET', token_required=True)
  99 def authenticate_old(request, user=None):
 100     # Normal Response Codes: 204
 101     # Error Response Codes: internalServerError (500)
 102     #                       badRequest (400)
 103     #                       unauthorised (401)
 104     if not user:
 105         raise BadRequest('No user')
 106
 107     # Check if the is active.
 108     if not user.is_active:
 109         raise Unauthorized('User inactive')
 110
 111     # Check if the token has expired.
 112     if (time() - mktime(user.auth_token_expires.timetuple())) > 0:
 113         raise Unauthorized('Authentication expired')
 114
 115     if not user.signed_terms():
 116         raise Unauthorized('Pending approval terms')
 117
 118     response = HttpResponse()
 119     response.status=204
 120     user_info = {'username':user.username,
 121                  'uniq':user.email,
 122                  'auth_token':user.auth_token,
 123                  'auth_token_created':user.auth_token_created.isoformat(),
 124                  'auth_token_expires':user.auth_token_expires.isoformat(),
 125                  'has_credits':user.has_credits,
 126                  'has_signed_terms':user.signed_terms()}
 127     response.content = json.dumps(user_info)
 128     response['Content-Type'] = 'application/json; charset=UTF-8'
 129     response['Content-Length'] = len(response.content)
 130     return response
 131
 132 @api_method(http_method='GET', token_required=True)
 133 def authenticate(request, user=None):
 134     # Normal Response Codes: 204
 135     # Error Response Codes: internalServerError (500)
 136     #                       badRequest (400)
 137     #                       unauthorised (401)
 138     if not user:
 139         raise BadRequest('No user')
 140
 141     # Check if the is active.
 142     if not user.is_active:
 143         raise Unauthorized('User inactive')
 144
 145     # Check if the token has expired.
 146     if (time() - mktime(user.auth_token_expires.timetuple())) > 0:
 147         raise Unauthorized('Authentication expired')
 148
 149     if not user.signed_terms():
 150         raise Unauthorized('Pending approval terms')
 151
 152     response = HttpResponse()
 153     response.status=204
 154     user_info = {'userid':user.username,
 155                  'email':[user.email],
 156                  'name':user.realname,
 157                  'auth_token':user.auth_token,
 158                  'auth_token_created':epoch(user.auth_token_created),
 159                  'auth_token_expires':epoch(user.auth_token_expires),
 160                  'has_credits':user.has_credits,
 161                  'is_active':user.is_active,
 162                  'groups':[g.name for g in user.groups.all()]}
 163     response.content = json.dumps(user_info)
 164     response['Content-Type'] = 'application/json; charset=UTF-8'
 165     response['Content-Length'] = len(response.content)
 166     return response
 167
 168 @api_method(http_method='GET')
 169 def get_services(request):
 170     callback = request.GET.get('callback', None)
 171     data = json.dumps(CLOUD_SERVICES)
 172     mimetype = 'application/json'
 173
 174     if callback:
 175         mimetype = 'application/javascript'
 176         data = '%s(%s)' % (callback, data)
 177
 178     return HttpResponse(content=data, mimetype=mimetype)
 179
 180 @api_method()
 181 def get_menu(request, with_extra_links=False, with_signout=True):
 182     exclude = []
 183     index_url = reverse('index')
 184     absolute = lambda (url): request.build_absolute_uri(url)
 185     l = [{ 'url': absolute(index_url), 'name': "Sign in"}]
 186     cookie = urllib.unquote(request.COOKIES.get(COOKIE_NAME, ''))
 187     email = cookie.partition('|')[0]
 188     try:
 189         user = AstakosUser.objects.get(email=email, is_active=True)
 190     except AstakosUser.DoesNotExist:
 191         pass
 192     else:
 193         l = []
 194         l.append({ 'url': absolute(reverse('astakos.im.views.index')),
 195                   'name': user.email})
 196         l.append({ 'url': absolute(reverse('astakos.im.views.edit_profile')),
 197                   'name': "My account" })
 198         if with_extra_links:
 199             if user.has_usable_password():
 200                 l.append({ 'url': absolute(reverse('password_change')),
 201                           'name': "Change password" })
 202             if INVITATIONS_ENABLED:
 203                 l.append({ 'url': absolute(reverse('astakos.im.views.invite')),
 204                           'name': "Invitations" })
 205             l.append({ 'url': absolute(reverse('astakos.im.views.feedback')),
 206                       'name': "Feedback" })
 207         if with_signout:
 208             l.append({ 'url': absolute(reverse('astakos.im.views.logout')),
 209                       'name': "Sign out"})
 210
 211     callback = request.GET.get('callback', None)
 212     data = json.dumps(tuple(l))
 213     mimetype = 'application/json'
 214
 215     if callback:
 216         mimetype = 'application/javascript'
 217         data = '%s(%s)' % (callback, data)
 218
 219     return HttpResponse(content=data, mimetype=mimetype)
 220
 221 @api_method(http_method='GET', token_required=True, perms=['astakos.im.can_find_userid'])
 222 def find_userid(request):
 223     # Normal Response Codes: 204
 224     # Error Response Codes: internalServerError (500)
 225     #                       badRequest (400)
 226     #                       unauthorised (401)
 227     email = request.GET.get('email')
 228     if not email:
 229         raise BadRequest('Email missing')
 230     try:
 231         user = AstakosUser.objects.get(email = email, is_active=True)
 232     except AstakosUser.DoesNotExist, e:
 233         raise BadRequest('Invalid email')
 234     else:
 235         response = HttpResponse()
 236         response.status=204
 237         user_info = {'userid':user.username}
 238         response.content = json.dumps(user_info)
 239         response['Content-Type'] = 'application/json; charset=UTF-8'
 240         response['Content-Length'] = len(response.content)
 241         return response
 242
 243 @api_method(http_method='GET', token_required=True, perms=['astakos.im.can_find_email'])
 244 def find_email(request):
 245     # Normal Response Codes: 204
 246     # Error Response Codes: internalServerError (500)
 247     #                       badRequest (400)
 248     #                       unauthorised (401)
 249     userid = request.GET.get('userid')
 250     if not userid:
 251         raise BadRequest('Userid missing')
 252     try:
 253         user = AstakosUser.objects.get(username = userid)
 254     except AstakosUser.DoesNotExist, e:
 255         raise BadRequest('Invalid userid')
 256     else:
 257         response = HttpResponse()
 258         response.status=204
 259         user_info = {'userid':user.email}
 260         response.content = json.dumps(user_info)
 261         response['Content-Type'] = 'application/json; charset=UTF-8'
 262         response['Content-Length'] = len(response.content)
 263         return response