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|
# Copyright (C) 2012-2013 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 shutil
import gettext
import logging
import hashlib
from cStringIO import StringIO
from contextlib import contextmanager
from ConfigParser import ConfigParser
from os.path import join, isdir, exists
from sugar_network import node, toolkit, model
from sugar_network.node import stats_node, stats_user
# pylint: disable-msg=W0611
from sugar_network.toolkit.router import route, preroute, postroute, ACL
from sugar_network.toolkit.router import Unauthorized, Request, fallbackroute
from sugar_network.toolkit.spec import EMPTY_LICENSE
from sugar_network.toolkit.spec import parse_requires, ensure_requires
from sugar_network.toolkit.bundle import Bundle
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(model.VolumeRoutes, model.FrontRoutes):
def __init__(self, guid, volume):
model.VolumeRoutes.__init__(self, volume)
model.FrontRoutes.__init__(self)
volume.broadcast = self.broadcast
self._guid = guid
self._stats = None
self._auth_pool = pylru.lrucache(_AUTH_POOL_SIZE)
self._auth_config = None
self._auth_config_mtime = 0
if stats_node.stats_node.value:
stats_path = join(node.stats_root.value, 'node')
self._stats = stats_node.Sniffer(volume, stats_path)
coroutine.spawn(self._commit_stats)
def close(self):
if self._stats is not None:
self._stats.suspend()
@property
def guid(self):
return self._guid
@route('GET', cmd='logon', acl=ACL.AUTH)
def logon(self):
pass
@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):
documents = {}
for name, directory in self.volume.items():
documents[name] = {'mtime': directory.mtime}
return {'guid': self._guid, 'resources': documents}
@route('GET', cmd='stats', arguments={
'start': int, 'end': int, 'records': int, 'source': list},
mime_type='application/json')
def stats(self, start, end, records, source):
enforce(self._stats is not None, 'Node stats is disabled')
if not source:
return {}
if records > _MAX_STAT_RECORDS:
_logger.debug('Decrease %d stats records number to %d',
records, _MAX_STAT_RECORDS)
records = _MAX_STAT_RECORDS
elif records <= 0:
records = _MAX_STAT_RECORDS / 10
stats = {}
for i in source:
enforce('.' in i, 'Misnamed source')
db_name, ds_name = i.split('.', 1)
stats.setdefault(db_name, []).append(ds_name)
return self._stats.report(stats, start, end, records)
@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):
enforce(node.files_root.value, http.BadRequest, 'Disabled')
if request.path and request.path[-1] == 'updates':
root = join(node.files_root.value, *request.path[:-1])
enforce(isdir(root), http.NotFound, 'Directory was not found')
result = []
last_modified = 0
for filename in os.listdir(root):
if '.' in filename:
continue
path = join(root, filename)
mtime = int(os.stat(path).st_mtime)
if mtime > request.if_modified_since:
result.append(filename)
last_modified = max(last_modified, mtime)
response.content_type = 'application/json'
if last_modified:
response.last_modified = last_modified
return result
path = join(node.files_root.value, *request.path)
enforce(exists(path), http.NotFound, 'File was not found')
if not isdir(path):
return toolkit.iter_file(path)
result = []
for filename in os.listdir(path):
if filename.endswith('.rpm') or filename.endswith('.deb'):
continue
result.append(filename)
response.content_type = 'application/json'
return result
@route('POST', ['implementation'], cmd='submit',
arguments={'initial': False},
mime_type='application/json', acl=ACL.AUTH)
def submit_implementation(self, request, document):
with toolkit.NamedTemporaryFile() as blob:
shutil.copyfileobj(request.content_stream, blob)
blob.flush()
with load_bundle(self.volume, request, blob.name) as impl:
impl['data']['blob'] = blob.name
return impl['guid']
@route('DELETE', [None, None], acl=ACL.AUTH | ACL.AUTHOR)
def delete(self, request):
# Servers data should not be deleted immediately
# to let master-slave synchronization possible
request.call(method='PUT', path=request.path,
content={'layer': ['deleted']})
@route('PUT', [None, None], cmd='attach', acl=ACL.AUTH | ACL.SUPERUSER)
def attach(self, request):
# TODO Reading layer here is a race
directory = self.volume[request.resource]
doc = directory.get(request.guid)
layer = list(set(doc['layer']) | set(request.content))
directory.update(request.guid, {'layer': layer})
@route('PUT', [None, None], cmd='detach', acl=ACL.AUTH | ACL.SUPERUSER)
def detach(self, request):
# TODO Reading layer here is a race
directory = self.volume[request.resource]
doc = directory.get(request.guid)
layer = list(set(doc['layer']) - set(request.content))
directory.update(request.guid, {'layer': layer})
@route('GET', ['context', None], cmd='clone',
arguments={'requires': list})
def get_clone(self, request, response):
return self._get_clone(request, response)
@route('HEAD', ['context', None], cmd='clone',
arguments={'requires': list})
def head_clone(self, request, response):
self._get_clone(request, response)
@route('GET', ['context', None], cmd='deplist',
mime_type='application/json', arguments={'requires': list})
def deplist(self, request, repo):
"""List of native packages context is dependening on.
Command return only GNU/Linux package names and ignores
Sugar Network dependencies.
:param repo:
OBS repository name to get package names for, e.g.,
Fedora-14
:returns:
list of package names
"""
enforce(repo, 'Argument %r should be set', 'repo')
spec = self._solve(request).meta('data')['spec']['*-*']
common_deps = self.volume['context'].get(request.guid)['dependencies']
result = []
for package in set(spec.get('requires') or []) | set(common_deps):
if package == 'sugar':
continue
dep = self.volume['context'].get(package)
enforce(repo in dep['packages'],
'No packages for %r on %r', package, repo)
result.extend(dep['packages'][repo].get('binary') or [])
return result
@route('GET', ['user', None], cmd='stats-info',
mime_type='application/json', acl=ACL.AUTH)
def user_stats_info(self, request):
status = {}
for rdb in stats_user.get_rrd(request.guid):
status[rdb.name] = rdb.last + stats_user.stats_user_step.value
# TODO Process client configuration in more general manner
return {'enable': True,
'step': stats_user.stats_user_step.value,
'rras': ['RRA:AVERAGE:0.5:1:4320', 'RRA:AVERAGE:0.5:5:2016'],
'status': status,
}
@route('POST', ['user', None], cmd='stats-upload', acl=ACL.AUTH)
def user_stats_upload(self, request):
name = request.content['name']
values = request.content['values']
rrd = stats_user.get_rrd(request.guid)
for timestamp, values in values:
rrd[name].put(values, timestamp)
@route('GET', ['report', None], cmd='log', mime_type='text/html')
def log(self, request):
# In further implementations, `data` might be a tarball
data = self.volume[request.resource].get(request.guid).meta('data')
if data and 'blob' in data:
return file(data['blob'], 'rb')
else:
return ''
@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:
if request.resource == 'user':
allowed = (request.principal == request.guid)
else:
doc = self.volume[request.resource].get(request.guid)
allowed = (request.principal in doc['author'])
enforce(allowed or self.authorize(request.principal, 'root'),
http.Forbidden, 'Operation is permitted only for authors')
if op.acl & ACL.SUPERUSER:
enforce(self.authorize(request.principal, 'root'), http.Forbidden,
'Operation is permitted only for superusers')
@postroute
def postroute(self, request, response, result, error):
if error is None or isinstance(error, http.StatusPass):
if self._stats is not None:
self._stats.log(request)
def on_create(self, request, props, event):
if request.resource == 'user':
with file(props['pubkey']['blob']) as f:
props['guid'] = str(hashlib.sha1(f.read()).hexdigest())
model.VolumeRoutes.on_create(self, request, props, event)
def on_update(self, request, props, event):
model.VolumeRoutes.on_update(self, request, props, event)
if 'deleted' in props.get('layer', []):
event['event'] = 'delete'
def find(self, request, reply):
limit = request.get('limit')
if limit is None or limit < 0:
request['limit'] = node.find_limit.value
elif limit > node.find_limit.value:
_logger.warning('The find limit is restricted to %s',
node.find_limit.value)
request['limit'] = node.find_limit.value
layer = request.setdefault('layer', [])
if 'deleted' in layer:
_logger.warning('Requesting "deleted" layer')
layer.remove('deleted')
request.add('not_layer', 'deleted')
return model.VolumeRoutes.find(self, request, reply)
def get(self, request, reply):
doc = self.volume[request.resource].get(request.guid)
enforce('deleted' not in doc['layer'], http.NotFound,
'Resource deleted')
return model.VolumeRoutes.get(self, request, reply)
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
data = hashlib.sha1('%s:%s' % (auth.login, auth.nonce)).digest()
key = RSA.load_pub_key(self.volume['user'].path(auth.login, 'pubkey'))
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 _commit_stats(self):
while True:
coroutine.sleep(stats_node.stats_node_step.value)
self._stats.commit()
def _solve(self, request):
requires = {}
if 'requires' in request:
for i in request['requires']:
requires.update(parse_requires(i))
request.pop('requires')
else:
request['limit'] = 1
if 'stability' not in request:
request['stability'] = 'stable'
impls, __ = self.volume['implementation'].find(
context=request.guid, order_by='-version', not_layer='deleted',
**request)
impl = None
for impl in impls:
if requires:
impl_deps = impl.meta('data')['spec']['*-*']['requires']
if not ensure_requires(impl_deps, requires):
continue
break
else:
raise http.NotFound('No implementations found')
return impl
def _get_clone(self, request, response):
impl = self._solve(request)
result = request.call(method=request.method,
path=['implementation', impl['guid'], 'data'],
response=response)
response.meta = impl.properties([
'guid', 'ctime', 'layer', 'author', 'tags',
'context', 'version', 'stability', 'license', 'notes',
])
response.meta['data'] = data = impl.meta('data')
for key in ('mtime', 'seqno', 'blob'):
if key in data:
del data[key]
return result
def generate_node_stats(volume, path):
tmp_path = toolkit.mkdtemp()
new_stats = stats_node.Sniffer(volume, tmp_path, True)
old_stats = stats_node.Sniffer(volume, path)
def timeline(ts):
ts = long(ts)
end = long(time.time())
step = None
archives = {}
for rra in stats_node.stats_node_rras.value:
a_step, a_size = [long(i) for i in rra.split(':')[-2:]]
a_step *= stats_node.stats_node_step.value
a_start = end - min(end, a_step * a_size)
if archives.setdefault(a_start, a_step) > a_step:
archives[a_start] = a_step
archives = list(sorted(archives.items()))
try:
while ts <= end:
while not step or archives and ts >= archives[0][0]:
archive_start, step = archives.pop(0)
ts = max(ts / step * step, archive_start)
yield ts, ts + step - 1, step
ts += step
except GeneratorExit:
shutil.rmtree(tmp_path, ignore_errors=True)
start = next(volume['context'].find(limit=1, order_by='ctime')[0])['ctime']
for left, right, step in timeline(start):
for resource, props in [
('user', []),
('context', []),
('implementation', ['context']),
('artifact', ['context', 'type']),
('feedback', ['context']),
('solution', ['context', 'feedback']),
('review', ['context', 'artifact', 'rating']),
('report', ['context', 'implementation']),
('comment', ['context', 'review', 'feedback', 'solution']),
]:
objs, __ = volume[resource].find(
query='ctime:%s..%s' % (left, right))
for obj in objs:
request = Request(method='POST', path=[resource],
content=obj.properties(props))
new_stats.log(request)
for resource, props in [
('user', ['layer']),
('context', ['layer']),
('implementation', ['layer']),
('artifact', ['layer']),
('feedback', ['layer', 'solution']),
('solution', ['layer']),
('review', ['layer']),
('report', ['layer']),
('comment', ['layer']),
]:
objs, __ = volume[resource].find(
query='mtime:%s..%s' % (left, right))
for obj in objs:
if 'deleted' in obj['layer']:
request = Request(method='DELETE',
path=[resource, obj.guid])
else:
request = Request(method='PUT', path=[resource, obj.guid],
content=obj.properties(props))
new_stats.log(request)
downloaded = {}
for resource in ('context', 'artifact'):
stats = old_stats.report(
{resource: ['downloaded']}, left - step, right, 1)
if not stats.get(resource):
continue
stats = stats[resource][-1][1].get('downloaded')
if stats:
downloaded[resource] = {'downloaded': stats}
new_stats.commit(left + (right - left) / 2, downloaded)
new_stats.commit_objects(True)
shutil.rmtree(path)
shutil.move(tmp_path, path)
@contextmanager
def load_bundle(volume, request, bundle_path):
impl = request.copy()
initial = False
if 'initial' in impl:
initial = impl.pop('initial')
data = impl.setdefault('data', {})
contexts = volume['context']
context = impl.get('context')
context_meta = None
impls = volume['implementation']
try:
bundle = Bundle(bundle_path, mime_type='application/zip')
except Exception:
_logger.debug('Load unrecognized bundle from %r', bundle_path)
context_type = 'content'
else:
_logger.debug('Load Sugar Activity bundle from %r', bundle_path)
context_type = 'activity'
unpack_size = 0
with bundle:
for arcname in bundle.get_names():
unpack_size += bundle.getmember(arcname).size
spec = bundle.get_spec()
context_meta = _load_context_metadata(bundle, spec)
if 'requires' in impl:
spec.requires.update(parse_requires(impl.pop('requires')))
context = impl['context'] = spec['context']
impl['version'] = spec['version']
impl['stability'] = spec['stability']
if spec['license'] is not EMPTY_LICENSE:
impl['license'] = spec['license']
requires = impl['requires'] = []
for dep_name, dep in spec.requires.items():
found = False
for version in dep.versions_range():
requires.append('%s-%s' % (dep_name, version))
found = True
if not found:
requires.append(dep_name)
data['spec'] = {'*-*': {
'commands': spec.commands,
'requires': spec.requires,
}}
data['unpack_size'] = unpack_size
data['mime_type'] = 'application/vnd.olpc-sugar'
if initial and not contexts.exists(context):
context_meta['guid'] = context
context_meta['type'] = 'activity'
request.call(method='POST', path=['context'], content=context_meta)
context_meta = None
enforce(context, 'Context is not specified')
enforce('version' in impl, 'Version is not specified')
enforce(context_type in contexts.get(context)['type'],
http.BadRequest, 'Inappropriate bundle type')
if 'license' not in impl:
existing, total = impls.find(
context=context, order_by='-version', not_layer='deleted')
enforce(total, 'License is not specified')
impl['license'] = next(existing)['license']
digest = hashlib.sha1()
with file(bundle_path, 'rb') as f:
while True:
chunk = f.read(toolkit.BUFFER_SIZE)
if not chunk:
break
digest.update(chunk)
data['digest'] = digest.hexdigest()
yield impl
existing, __ = impls.find(
context=context, version=impl['version'], not_layer='deleted')
if 'url' not in data:
data['blob'] = bundle_path
impl['guid'] = \
request.call(method='POST', path=['implementation'], content=impl)
for i in existing:
layer = i['layer'] + ['deleted']
impls.update(i.guid, {'layer': layer})
if 'origin' in impls.get(impl['guid']).layer:
diff = contexts.patch(context, context_meta)
if diff:
request.call(method='PUT', path=['context', context], content=diff)
def _load_context_metadata(bundle, spec):
def convert(data, w, h):
result = toolkit.svg_to_png(data.getvalue(), w, h)
return {'blob': result,
'mime_type': 'image/png',
'digest': hashlib.sha1(result.getvalue()).hexdigest(),
}
result = {}
for prop in ('homepage', 'mime_types'):
if spec[prop]:
result[prop] = spec[prop]
try:
icon_file = bundle.extractfile(join(bundle.rootdir, spec['icon']))
icon = StringIO(icon_file.read())
icon_file.close()
result.update({
'artifact_icon': {
'blob': icon,
'mime_type': 'image/svg+xml',
'digest': hashlib.sha1(icon.getvalue()).hexdigest(),
},
'preview': convert(icon, 160, 120),
'icon': convert(icon, 55, 55),
})
except Exception:
exception(_logger, 'Failed to load icon')
msgids = {}
for prop, confname in [
('title', 'name'),
('summary', 'summary'),
('description', 'description'),
]:
if spec[confname]:
msgids[prop] = spec[confname]
result[prop] = {'en': spec[confname]}
with toolkit.mkdtemp() as tmpdir:
for path in bundle.get_names():
if not path.endswith('.mo'):
continue
mo_path = path.strip(os.sep).split(os.sep)
if len(mo_path) != 5 or mo_path[1] != 'locale':
continue
lang = mo_path[2]
bundle.extract(path, tmpdir)
try:
i18n = gettext.translation(spec['context'],
join(tmpdir, *mo_path[:2]), [lang])
for prop, value in msgids.items():
msgstr = i18n.gettext(value).decode('utf8')
if lang == 'en' or msgstr != value:
result[prop][lang] = msgstr
except Exception:
exception(_logger, 'Gettext failed to read %r', mo_path[-1])
return result
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