def _destroy(self, trail, request, response):
try:
name = '/'.join(trail)
msg = self._parse_maybe_body(request, name)
except Exception as e:
raise HTTPError(406, str(e))
basename = self._db_container_key(None, trail)
try:
keylist = self.root.store.list(basename)
if keylist is None:
raise HTTPError(404)
if len(keylist) != 0:
raise HTTPError(409)
ret = self.root.store.cut(basename.rstrip('/'))
except CSStoreError:
raise HTTPError(500)
if ret is False:
raise HTTPError(404)
output = msg.reply(None)
if output is None:
response['code'] = 204
else:
response['output'] = output
response['code'] = 200
def _int_del_key(self, trail, request, response):
key = self._db_key(trail)
try:
ret = self.root.store.cut(key)
except CSStoreError:
raise HTTPError(500)
if ret is False:
raise HTTPError(404)
response['code'] = 204
def _db_container_key(self, default, trail):
f = None
if len(trail) > 1:
f = self._db_key(trail)
elif len(trail) == 1 and trail[0] != '':
raise HTTPError(403)
elif default is None:
# No dfault namespace, fail
raise HTTPError(403)
else:
# Use the default namespace
f = self._db_key([default, ''])
return f
def _int_get_key(self, trail, request, response):
try:
name = '/'.join(trail)
msg = self._parse_query(request, name)
except Exception as e:
raise HTTPError(406, str(e))
key = self._db_key(trail)
try:
output = self.root.store.get(key)
if output is None:
raise HTTPError(404)
response['output'] = msg.reply(output)
except CSStoreError:
raise HTTPError(500)
def _create(self, trail, request, response):
default = request.get('default_namespace', None)
basename = self._db_container_key(None, trail)
try:
ok = self._parent_exists(default, trail[:-1])
if not ok:
raise HTTPError(404)
self.root.store.set(basename, '')
except CSStoreExists:
raise HTTPError(409)
except CSStoreError:
raise HTTPError(500)
response['code'] = 201
def _list(self, trail, request, response):
try:
name = '/'.join(trail)
msg = self._parse_query(request, name)
except Exception as e:
raise HTTPError(406, str(e))
default = request.get('default_namespace', None)
basename = self._db_container_key(default, trail)
try:
keylist = self.root.store.list(basename)
self.logger.debug('list %s returned %r', basename, keylist)
if keylist is None:
raise HTTPError(404)
response['output'] = msg.reply(json.dumps(keylist))
except CSStoreError:
raise HTTPError(500)
def DELETE(self, request, response):
trail = request.get('trail', [])
if len(trail) == 0:
raise HTTPError(405)
if trail[-1] == '':
self._destroy(trail, request, response)
else:
self._del_key(trail, request, response)
def _int_get_key(self, trail, request, response):
# default to simple
query = request.get('query', '')
if len(query) == 0:
query = {'type': 'simple', 'value': ''}
try:
name = '/'.join(trail)
msg = self._parse(request, query, name)
except Exception as e:
raise HTTPError(406, str(e))
key = self._db_key(trail)
try:
output = self.root.store.get(key)
if output is None:
raise HTTPError(404)
response['output'] = msg.reply(output)
except CSStoreError:
raise HTTPError(500)
def _destroy(self, trail, request, response):
basename = self._db_container_key(None, trail)
try:
keylist = self.root.store.list(basename)
if keylist is None:
raise HTTPError(404)
if basename not in keylist:
# uh ?
raise HTTPError(409)
if len(keylist) != 1:
raise HTTPError(409)
ret = self.root.store.cut(basename)
except CSStoreError:
raise HTTPError(500)
if ret is False:
raise HTTPError(404)
response['code'] = 204
def _list(self, trail, request, response):
default = request.get('default_namespace', None)
basename = self._db_container_key(default, trail)
userfilter = request.get('query', dict()).get('filter', '')
try:
keylist = self.root.store.list(basename + userfilter)
if keylist is None:
raise HTTPError(404)
# remove the base container itself
output = list()
for k in keylist:
if k == basename:
continue
# strip away the internal prefix for storing keys
name = k[len('keys/'):]
output.append(name)
response['output'] = json.dumps(output)
except CSStoreError:
raise HTTPError(500)
def _find_handler(self, request):
base = self
command = request.get('command', 'GET')
if command not in SUPPORTED_COMMANDS:
raise HTTPError(501)
trail = request.get('trail', None)
if trail is not None:
for comp in trail:
subs = getattr(base, 'subs', {})
if comp in subs:
base = subs[comp]
trail.pop(0)
else:
break
handler = getattr(base, command)
if handler is None:
raise HTTPError(400)
return handler
def _int_del_key(self, trail, request, response):
try:
name = '/'.join(trail)
msg = self._parse_maybe_body(request, name)
except Exception as e:
raise HTTPError(406, str(e))
key = self._db_key(trail)
try:
ret = self.root.store.cut(key)
except CSStoreError:
raise HTTPError(500)
if ret is False:
raise HTTPError(404)
output = msg.reply(None)
if output is None:
response['code'] = 204
else:
response['output'] = output
response['code'] = 200
def _create(self, trail, request, response):
try:
name = '/'.join(trail)
msg = self._parse_maybe_body(request, name)
except Exception as e:
raise HTTPError(406, str(e))
default = request.get('default_namespace', None)
basename = self._db_container_key(None, trail)
try:
if len(trail) > 2:
ok = self._parent_exists(default, trail[:-1])
if not ok:
raise HTTPError(404)
self.root.store.span(basename)
except CSStoreExists:
raise HTTPError(409)
except CSStoreError:
raise HTTPError(500)
output = msg.reply(None)
if output is not None:
response['output'] = output
response['code'] = 201
def _parent_exists(self, default, trail):
# check that the containers exist
basename = self._db_container_key(trail[0], trail[:-1] + [''])
try:
keylist = self.root.store.list(basename)
except CSStoreError:
raise HTTPError(500)
self.logger.debug('parent_exists: %s (%s, %r) -> %r',
basename, default, trail, keylist)
if keylist is not None:
return True
# create default namespace if it is the only missing piece
if len(trail) == 2 and default == trail[0]:
container = self._db_container_key(default, '')
self.root.store.span(container)
return True
return False
def _parent_exists(self, default, trail):
# check that the containers exist
basename = self._db_container_key(trail[0], '')
try:
keylist = self.root.store.list(basename)
except CSStoreError:
raise HTTPError(500)
# create default namespace if it is the only missing piece
if keylist is None and len(trail) == 2 and default == trail[0]:
container = self._db_container_key(default, '')
self.root.store.set(container, '')
return True
# check if any parent is missing
for n in range(1, len(trail)):
c = self._db_key(trail[:n] + [''])
if c not in keylist:
return False
return True
def _int_set_key(self, trail, request, response):
content_type = request.get('headers', dict()).get('Content-Type', '')
if content_type.split(';')[0].strip() != 'application/json':
raise HTTPError(400, 'Invalid Content-Type')
body = request.get('body')
if body is None:
raise HTTPError(400)
value = bytes(body).decode('utf-8')
try:
name = '/'.join(trail)
msg = self._parse(request, json.loads(value), name)
except UnknownMessageType as e:
raise HTTPError(406, str(e))
except UnallowedMessage as e:
raise HTTPError(406, str(e))
except Exception as e:
raise HTTPError(400, str(e))
# must _db_key first as access control is done here for now
# otherwise users would e able to probe containers in namespaces
# they do not have access to.
key = self._db_key(trail)
try:
default = request.get('default_namespace', None)
ok = self._parent_exists(default, trail)
if not ok:
raise HTTPError(404)
ok = self.root.store.set(key, msg.payload)
except CSStoreExists:
raise HTTPError(409)
except CSStoreError:
raise HTTPError(500)
response['code'] = 201
def _db_key(self, trail):
if len(trail) < 2:
raise HTTPError(403)
return os.path.join('keys', *trail)
def check_authz(self, req):
if self.authz.handle(req) is False:
raise HTTPError(403)
def check_authz(self, req):
req['client_id'] = 'test'
req['path'] = '/'.join([''] + req.get('trail', []))
if self.authz.handle(req) is False:
raise HTTPError(403)
def _parse_body(self, request, name):
body = request.get('body')
if body is None:
raise HTTPError(400)
value = json.loads(bytes(body).decode('utf-8'))
return self._parse(request, value, name)
def handle(self, request):
raise HTTPError(403)
def _request(self, cmd, request, response, path, **kwargs):
if self.uuid in request['headers'].get('X-LOOP-CUSTODIA', ''):
raise HTTPError(502, "Loop detected")
reply = cmd(path, **kwargs)
self._response(reply, response)
def POST(self, request, response):
trail = request.get('trail', [])
if len(trail) > 0 and trail[-1] == '':
self._create(trail, request, response)
else:
raise HTTPError(405)
def PUT(self, request, response):
trail = request.get('trail', [])
if len(trail) == 0 or trail[-1] == '':
raise HTTPError(405)
else:
self._set_key(trail, request, response)
def _response(self, reply, response):
if reply.status_code < 200 or reply.status_code > 299:
raise HTTPError(reply.status_code)
response['code'] = reply.status_code
if reply.content:
response['output'] = reply.content
