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
|
# Copyright (C) 2012-2014 Aleksey Lim
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
import os
import time
import logging
import hashlib
from ConfigParser import ConfigParser
from os.path import join, exists
from sugar_network import db, node
from sugar_network.model import FrontRoutes, load_bundle
from sugar_network.node import model
# pylint: disable-msg=W0611
from sugar_network.toolkit.router import route, preroute, postroute, ACL, File
from sugar_network.toolkit.router import Unauthorized, Request, fallbackroute
from sugar_network.toolkit.spec import parse_requires, parse_version
from sugar_network.toolkit.bundle import Bundle
from sugar_network.toolkit.coroutine import this
from sugar_network.toolkit import pylru, http, coroutine, exception, enforce
_MAX_STAT_RECORDS = 100
_AUTH_POOL_SIZE = 1024
_logger = logging.getLogger('node.routes')
class NodeRoutes(db.Routes, FrontRoutes):
def __init__(self, guid, **kwargs):
db.Routes.__init__(self, **kwargs)
FrontRoutes.__init__(self)
self._guid = guid
self._auth_pool = pylru.lrucache(_AUTH_POOL_SIZE)
self._auth_config = None
self._auth_config_mtime = 0
@property
def guid(self):
return self._guid
@route('GET', cmd='whoami', mime_type='application/json')
def whoami(self, request, response):
roles = []
if self.authorize(request.principal, 'root'):
roles.append('root')
return {'roles': roles, 'guid': request.principal, 'route': 'direct'}
@route('GET', cmd='status', mime_type='application/json')
def status(self):
return {'guid': self.guid,
'seqno': {
'db': self.volume.seqno.value,
'releases': self.volume.releases_seqno.value,
},
}
@route('POST', ['user'], mime_type='application/json')
def register(self, request):
# To avoid authentication while registering new user
self.create(request)
@fallbackroute('GET', ['packages'])
def route_packages(self, request, response):
path = this.request.path
if path and path[-1] == 'updates':
result = []
last_modified = 0
for blob in this.volume.blobs.diff(
[[this.request.if_modified_since + 1, None]],
join(*path[:-1]), recursive=False):
if '.' in blob.name:
continue
result.append(blob.name)
last_modified = max(last_modified, blob.mtime)
response.content_type = 'application/json'
if last_modified:
response.last_modified = last_modified
return result
blob = this.volume.blobs.get(join(*path))
if isinstance(blob, File):
return blob
else:
response.content_type = 'application/json'
return [i.name for i in blob if '.' not in i.name]
@route('POST', ['context'], cmd='submit',
arguments={'initial': False},
mime_type='application/json', acl=ACL.AUTH)
def submit_release(self, initial):
blob = this.volume.blobs.post(
this.request.content_stream, this.request.content_type)
try:
context, release = load_bundle(blob, initial=initial)
except Exception:
this.volume.blobs.delete(blob.digest)
raise
this.call(method='POST', path=['context', context, 'releases'],
content_type='application/json', content=release)
return blob.digest
@route('GET', ['context', None], cmd='solve',
arguments={'requires': list, 'stability': list},
mime_type='application/json')
def solve(self, request):
solution = model.solve(self.volume, request.guid, **request)
enforce(solution is not None, 'Failed to solve')
return solution
@route('GET', ['context', None], cmd='clone',
arguments={'requires': list})
def get_clone(self, request, response):
solution = self.solve(request)
return this.volume.blobs.get(solution[request.guid]['blob'])
@preroute
def preroute(self, op, request, response):
if op.acl & ACL.AUTH and request.principal is None:
if not request.authorization:
enforce(self.authorize(None, 'user'),
Unauthorized, 'No credentials')
else:
if request.authorization not in self._auth_pool:
self.authenticate(request.authorization)
self._auth_pool[request.authorization] = True
enforce(not request.authorization.nonce or
request.authorization.nonce >= time.time(),
Unauthorized, 'Credentials expired')
request.principal = request.authorization.login
if op.acl & ACL.AUTHOR and request.guid:
self._enforce_authority(request)
if op.acl & ACL.SUPERUSER:
enforce(self.authorize(request.principal, 'root'), http.Forbidden,
'Operation is permitted only for superusers')
def on_create(self, request, props):
if request.resource == 'user':
with file(this.volume.blobs.get(props['pubkey']).path) as f:
props['guid'] = str(hashlib.sha1(f.read()).hexdigest())
db.Routes.on_create(self, request, props)
def on_aggprop_update(self, request, prop, value):
if prop.acl & ACL.AUTHOR:
self._enforce_authority(request)
elif value is not None:
self._enforce_authority(request, value.get('author'))
def authenticate(self, auth):
enforce(auth.scheme == 'sugar', http.BadRequest,
'Unknown authentication scheme')
if not self.volume['user'].exists(auth.login):
raise Unauthorized('Principal does not exist', auth.nonce)
from M2Crypto import RSA
pubkey = self.volume['user'][auth.login]['pubkey']
key = RSA.load_pub_key(this.volume.blobs.get(pubkey).path)
data = hashlib.sha1('%s:%s' % (auth.login, auth.nonce)).digest()
enforce(key.verify(data, auth.signature.decode('hex')),
http.Forbidden, 'Bad credentials')
def authorize(self, user, role):
if role == 'user' and user:
return True
config_path = join(node.data_root.value, 'authorization.conf')
if exists(config_path):
mtime = os.stat(config_path).st_mtime
if mtime > self._auth_config_mtime:
self._auth_config_mtime = mtime
self._auth_config = ConfigParser()
self._auth_config.read(config_path)
if self._auth_config is None:
return False
if not user:
user = 'anonymous'
if not self._auth_config.has_section(user):
user = 'DEFAULT'
if self._auth_config.has_option(user, role):
return self._auth_config.get(user, role).strip().lower() in \
('true', 'on', '1', 'allow')
def _enforce_authority(self, request, author=None):
if request.resource == 'user':
allowed = (request.principal == request.guid)
else:
if author is None:
doc = self.volume[request.resource].get(request.guid)
author = doc['author']
allowed = request.principal in author
enforce(allowed or self.authorize(request.principal, 'root'),
http.Forbidden, 'Operation is permitted only for authors')
|
