-
Notifications
You must be signed in to change notification settings - Fork 8
/
base.py
305 lines (253 loc) · 11.5 KB
/
base.py
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
# encoding: utf-8
"""The base Controller API
Provides the BaseController class for subclassing.
"""
import logging
import time
from paste.deploy.converters import asbool
from pylons import cache, session
from pylons.controllers import WSGIController
from pylons.controllers.util import abort as _abort
from pylons.controllers.util import redirect_to, redirect
from pylons.decorators import jsonify
from pylons.i18n import N_, gettext, ngettext
from pylons.templating import cached_template, pylons_globals
from webhelpers.html import literal
import ckan.exceptions
import ckan
import ckan.lib.i18n as i18n
import ckan.lib.render as render_
import ckan.lib.helpers as h
import ckan.lib.app_globals as app_globals
import ckan.plugins as p
import ckan.model as model
import ckan.lib.maintain as maintain
# These imports are for legacy usages and will be removed soon these should
# be imported directly from ckan.common for internal ckan code and via the
# plugins.toolkit for extensions.
from ckan.common import json, _, ungettext, c, g, request, response, config
log = logging.getLogger(__name__)
APIKEY_HEADER_NAME_KEY = 'apikey_header_name'
APIKEY_HEADER_NAME_DEFAULT = 'X-CKAN-API-Key'
def abort(status_code=None, detail='', headers=None, comment=None):
'''Abort the current request immediately by returning an HTTP exception.
This is a wrapper for :py:func:`pylons.controllers.util.abort` that adds
some CKAN custom behavior, including allowing
:py:class:`~ckan.plugins.interfaces.IAuthenticator` plugins to alter the
abort response, and showing flash messages in the web interface.
'''
if status_code == 403:
# Allow IAuthenticator plugins to alter the abort
for item in p.PluginImplementations(p.IAuthenticator):
result = item.abort(status_code, detail, headers, comment)
(status_code, detail, headers, comment) = result
if detail and status_code != 503:
h.flash_error(detail)
# #1267 Convert detail to plain text, since WebOb 0.9.7.1 (which comes
# with Lucid) causes an exception when unicode is received.
detail = detail.encode('utf8')
return _abort(status_code=status_code,
detail=detail,
headers=headers,
comment=comment)
def render_snippet(template_name, **kw):
''' Helper function for rendering snippets. Rendered html has
comment tags added to show the template used. NOTE: unlike other
render functions this takes a list of keywords instead of a dict for
the extra template variables. '''
# allow cache_force to be set in render function
cache_force = kw.pop('cache_force', None)
output = render(template_name, extra_vars=kw, cache_force=cache_force,
renderer='snippet')
if config.get('debug'):
output = ('\n<!-- Snippet %s start -->\n%s\n<!-- Snippet %s end -->\n'
% (template_name, output, template_name))
return literal(output)
def render_jinja2(template_name, extra_vars):
env = config['pylons.app_globals'].jinja_env
template = env.get_template(template_name)
return template.render(**extra_vars)
def render(template_name, extra_vars=None, cache_key=None, cache_type=None,
cache_expire=None, cache_force=None, renderer=None):
'''Render a template and return the output.
This is CKAN's main template rendering function.
.. todo::
Document the parameters of :py:func:`ckan.plugins.toolkit.render`.
'''
env = config['pylons.app_globals'].jinja_env
template = env.get_template(template_name)
extras = extra_vars or {}
extras.update(pylons_globals())
del extras['url']
del extras['config']
return template.render(**extras)
class ValidationException(Exception):
pass
class BaseController(WSGIController):
'''Base class for CKAN controller classes to inherit from.
'''
repo = model.repo
log = logging.getLogger(__name__)
def __before__(self, action, **params):
c.__timer = time.time()
app_globals.app_globals._check_uptodate()
self._identify_user()
i18n.handle_request(request, c)
maintain.deprecate_context_item(
'new_activities',
'Use `h.new_activities` instead.')
def _identify_user(self):
'''Try to identify the user
If the user is identified then:
c.user = user name (unicode)
c.userobj = user object
c.author = user name
otherwise:
c.user = None
c.userobj = None
c.author = user's IP address (unicode)'''
# see if it was proxied first
c.remote_addr = request.environ.get('HTTP_X_FORWARDED_FOR', '')
if not c.remote_addr:
c.remote_addr = request.environ.get('REMOTE_ADDR',
'Unknown IP Address')
# Authentication plugins get a chance to run here break as soon as a
# user is identified.
authenticators = p.PluginImplementations(p.IAuthenticator)
if authenticators:
for item in authenticators:
item.identify()
if c.user:
break
# We haven't identified the user so try the default methods
if not c.user:
self._identify_user_default()
# If we have a user but not the userobj let's get the userobj. This
# means that IAuthenticator extensions do not need to access the user
# model directly.
if c.user and not c.userobj:
c.userobj = model.User.by_name(c.user)
# general settings
if c.user:
c.author = c.user
else:
c.author = c.remote_addr
c.author = unicode(c.author)
def _identify_user_default(self):
'''
Identifies the user using two methods:
a) If they logged into the web interface then repoze.who will
set REMOTE_USER.
b) For API calls they may set a header with an API key.
'''
# environ['REMOTE_USER'] is set by repoze.who if it authenticates a
# user's cookie. But repoze.who doesn't check the user (still) exists
# in our database - we need to do that here. (Another way would be
# with an userid_checker, but that would mean another db access.
# See: http://docs.repoze.org/who/1.0/narr.html#module-repoze.who\
# .plugins.sql )
c.user = request.environ.get('REMOTE_USER', '')
if c.user:
c.user = c.user.decode('utf8')
c.userobj = model.User.by_name(c.user)
if c.userobj is None or not c.userobj.is_active():
# This occurs when a user that was still logged in is deleted,
# or when you are logged in, clean db and then restart (or
# when you change your username) There is no user object, so
# even though repoze thinks you are logged in and your cookie
# has ckan_display_name, we need to force user to logout and
# login again to get the User object.
ev = request.environ
if 'repoze.who.plugins' in ev:
pth = getattr(ev['repoze.who.plugins']['friendlyform'],
'logout_handler_path')
h.redirect_to(pth)
else:
c.userobj = self._get_user_for_apikey()
if c.userobj is not None:
c.user = c.userobj.name
def __call__(self, environ, start_response):
"""Invoke the Controller"""
# WSGIController.__call__ dispatches to the Controller method
# the request is routed to. This routing information is
# available in environ['pylons.routes_dict']
try:
res = WSGIController.__call__(self, environ, start_response)
finally:
model.Session.remove()
for cookie in request.cookies:
# Remove the ckan session cookie if not used e.g. logged out
if cookie == 'ckan' and not c.user:
# Check session for valid data (including flash messages)
# (DGU also uses session for a shopping basket-type behaviour)
is_valid_cookie_data = False
for key, value in session.items():
if not key.startswith('_') and value:
is_valid_cookie_data = True
break
if not is_valid_cookie_data:
if session.id:
self.log.debug('No valid session data - '
'deleting session')
self.log.debug('Session: %r', session.items())
session.delete()
else:
self.log.debug('No session id - '
'deleting session cookie')
response.delete_cookie(cookie)
# Remove auth_tkt repoze.who cookie if user not logged in.
elif cookie == 'auth_tkt' and not session.id:
response.delete_cookie(cookie)
return res
def __after__(self, action, **params):
# Do we have CORS settings in config?
if config.get('ckan.cors.origin_allow_all') \
and request.headers.get('Origin'):
self._set_cors()
r_time = time.time() - c.__timer
url = request.environ['CKAN_CURRENT_URL'].split('?')[0]
log.info(' %s render time %.3f seconds' % (url, r_time))
def _set_cors(self):
'''
Set up Access Control Allow headers if either origin_allow_all is
True, or the request Origin is in the origin_whitelist.
'''
cors_origin_allowed = None
if asbool(config.get('ckan.cors.origin_allow_all')):
cors_origin_allowed = b"*"
elif config.get('ckan.cors.origin_whitelist') and \
request.headers.get('Origin') \
in config['ckan.cors.origin_whitelist'].split():
# set var to the origin to allow it.
cors_origin_allowed = request.headers.get('Origin')
if cors_origin_allowed is not None:
response.headers[b'Access-Control-Allow-Origin'] = \
cors_origin_allowed
response.headers[b'Access-Control-Allow-Methods'] = \
b"POST, PUT, GET, DELETE, OPTIONS"
response.headers[b'Access-Control-Allow-Headers'] = \
b"X-CKAN-API-KEY, Authorization, Content-Type"
def _get_user_for_apikey(self):
apikey_header_name = config.get(APIKEY_HEADER_NAME_KEY,
APIKEY_HEADER_NAME_DEFAULT)
apikey = request.headers.get(apikey_header_name, '')
if not apikey:
apikey = request.environ.get(apikey_header_name, '')
if not apikey:
# For misunderstanding old documentation (now fixed).
apikey = request.environ.get('HTTP_AUTHORIZATION', '')
if not apikey:
apikey = request.environ.get('Authorization', '')
# Forget HTTP Auth credentials (they have spaces).
if ' ' in apikey:
apikey = ''
if not apikey:
return None
self.log.debug("Received API Key: %s" % apikey)
apikey = unicode(apikey)
query = model.Session.query(model.User)
user = query.filter_by(apikey=apikey).first()
return user
# Include the '_' function in the public names
__all__ = [__name for __name in locals().keys() if not __name.startswith('_')
or __name == '_']