def removeObserver(self, event, observerfn):
"""
Remove callable as observer for an event.
The observer callable is removed for all priority levels for the
specified event.
@param event: Event for which the observer callable was registered.
@type event: C{str} or L{xpath.XPathQuery}
@param observerfn: Observer callable to be unregistered.
"""
# If this is happening in the middle of the dispatch, queue
# it up for processing after the dispatch completes
if self._dispatchDepth > 0:
self._updateQueue.append(lambda:self.removeObserver(event, observerfn))
return
event, observers = self._getEventAndObservers(event)
emptyLists = []
for priority, priorityObservers in iteritems(observers):
for query, callbacklist in iteritems(priorityObservers):
if event == query:
callbacklist.removeCallback(observerfn)
if callbacklist.isEmpty():
emptyLists.append((priority, query))
for priority, query in emptyLists:
del observers[priority][query]
def removeObserver(self, event, observerfn):
"""
Remove callable as observer for an event.
The observer callable is removed for all priority levels for the
specified event.
@param event: Event for which the observer callable was registered.
@type event: C{str} or L{xpath.XPathQuery}
@param observerfn: Observer callable to be unregistered.
"""
# If this is happening in the middle of the dispatch, queue
# it up for processing after the dispatch completes
if self._dispatchDepth > 0:
self._updateQueue.append(lambda:self.removeObserver(event, observerfn))
return
event, observers = self._getEventAndObservers(event)
emptyLists = []
for priority, priorityObservers in iteritems(observers):
for query, callbacklist in iteritems(priorityObservers):
if event == query:
callbacklist.removeCallback(observerfn)
if callbacklist.isEmpty():
emptyLists.append((priority, query))
for priority, query in emptyLists:
del observers[priority][query]
def sendHeader(self):
"""
Send stream header.
"""
# set up optional extra namespaces
localPrefixes = {}
for uri, prefix in iteritems(self.prefixes):
if uri != NS_STREAMS:
localPrefixes[prefix] = uri
rootElement = domish.Element((NS_STREAMS, "stream"), self.namespace, localPrefixes=localPrefixes)
if self.otherEntity:
rootElement["to"] = self.otherEntity.userhost()
if self.thisEntity:
rootElement["from"] = self.thisEntity.userhost()
if not self.initiating and self.sid:
rootElement["id"] = self.sid
if self.version >= (1, 0):
rootElement["version"] = "%d.%d" % self.version
self.send(rootElement.toXml(prefixes=self.prefixes, closeElement=0))
self._headerSent = True
def _openapi_to_v1_5_data_model(openapi):
base = loads(
FilePath(__file__).sibling("extra-1.5.json").getContent()
)
for k, v in iteritems(openapi):
if isinstance(v, dict):
base.setdefault(k, {}).update(v)
else:
base[k] = v
return _KubernetesDataModel.from_swagger(
Swagger.from_document(base),
u"version.Info", dict(
major=u"1",
minor=u"5",
gitVersion=u"",
gitCommit=u"",
gitTreeState=u"",
buildDate=u"",
goVersion=u"",
compiler=u"",
platform=u"",
),
{u"v1"},
{u"v1beta1"},
)
def get_data(self):
"""Return a C{dict} mapping APT preferences files to their contents.
If no APT preferences configuration is set at all on the system, then
simply return C{None}
"""
data = {}
preferences_filename = os.path.join(self._etc_apt_directory,
u"preferences")
if os.path.exists(preferences_filename):
data[preferences_filename] = read_text_file(preferences_filename)
preferences_directory = os.path.join(self._etc_apt_directory,
u"preferences.d")
if os.path.isdir(preferences_directory):
for entry in os.listdir(preferences_directory):
filename = os.path.join(preferences_directory, entry)
if os.path.isfile(filename):
data[filename] = read_text_file(filename)
if data == {}:
return None
item_size_limit = self.size_limit // len(data.keys())
for filename, contents in iteritems(data):
if len(filename) + len(contents) > item_size_limit:
truncated_contents_size = item_size_limit - len(filename)
data[filename] = data[filename][0:truncated_contents_size]
return data
def get_session_id(self, scope=None):
"""Generate a unique session identifier, persist it and return it.
See also L{landscape.broker.server.BrokerServer.get_session_id} for
more information on what this is used for.
@param scope: A string identifying the scope of interest of requesting
object. Currently this is unused but it has been implemented in
preparation for a fix for bug #300278 so that we don't have to
change the persisted structure later. When that fix is in place
this will allow us to re-synchronise only certain types of
information, limited by scope.
"""
session_ids = self._persist.get("session-ids", {})
for session_id, stored_scope in iteritems(session_ids):
# This loop should be relatively short as it's intent is to limit
# session-ids to one per scope. The or condition here is not
# strictly necessary, but we *should* do "is" comparisons when we
# can (so says PEP 8).
if scope == stored_scope:
return session_id
session_id = str(uuid.uuid4())
session_ids[session_id] = scope
self._persist.set("session-ids", session_ids)
return session_id
def sendHeader(self):
"""
Send stream header.
"""
# set up optional extra namespaces
localPrefixes = {}
for uri, prefix in iteritems(self.prefixes):
if uri != NS_STREAMS:
localPrefixes[prefix] = uri
rootElement = domish.Element((NS_STREAMS, 'stream'),
self.namespace,
localPrefixes=localPrefixes)
if self.otherEntity:
rootElement['to'] = self.otherEntity.userhost()
if self.thisEntity:
rootElement['from'] = self.thisEntity.userhost()
if not self.initiating and self.sid:
rootElement['id'] = self.sid
if self.version >= (1, 0):
rootElement['version'] = "%d.%d" % self.version
self.send(rootElement.toXml(prefixes=self.prefixes, closeElement=0))
self._headerSent = True
def __init__(self, to=None, statuses=None):
Presence.__init__(self, to, type='unavailable')
if statuses is not None:
for lang, status in iteritems(statuses):
s = self.addElement('status', content=status)
if lang:
s[(NS_XML, "lang")] = lang
def set_hash_ids(self, cursor, hash_ids):
"""Set the ids of a set of hashes.
@param hash_ids: a C{dict} of hash=>id mappings.
"""
for hash, id in iteritems(hash_ids):
cursor.execute("REPLACE INTO hash VALUES (?, ?)",
(id, sqlite3.Binary(hash)))
def _generateCacheEntry(provider):
dropin = CachedDropin(provider.__name__, provider.__doc__)
for k, v in iteritems(provider.__dict__):
plugin = IPlugin(v, None)
if plugin is not None:
# Instantiated for its side-effects.
CachedPlugin(dropin, k, v.__doc__, list(providedBy(plugin)))
return dropin
def _detect_group_changes(self):
"""
Compare the current group snapshot to the old one and create a
C{dict} with C{create-groups}, C{delete-groups},
C{create-group-members} and {delete-group-members} fields.
Fields without data aren't included in the result.
"""
changes = {}
creates, updates, deletes = diff(self._old_groups, self._new_groups)
if creates:
groups = []
create_members = {}
for value in itervalues(creates):
# Use a copy to avoid removing the 'members' element
# from stored data.
value = value.copy()
members = value.pop("members")
if members:
create_members[value["name"]] = members
groups.append(value)
changes["create-groups"] = groups
if create_members:
changes["create-group-members"] = create_members
if updates:
remove_members = {}
create_members = {}
update_groups = []
for groupname, new_data in iteritems(updates):
old_data = self._old_groups[groupname]
old_members = set(old_data["members"])
new_members = set(new_data["members"])
created = new_members - old_members
if created:
create_members[groupname] = sorted(created)
removed = old_members - new_members
if removed:
remove_members[groupname] = sorted(removed)
if old_data["gid"] != new_data["gid"]:
update_groups.append({
"name": groupname,
"gid": new_data["gid"]
})
if create_members:
members = changes.setdefault("create-group-members", {})
members.update(create_members)
if remove_members:
members = changes.setdefault("delete-group-members", {})
members.update(remove_members)
if update_groups:
members = changes.setdefault("update-groups", [])
members.extend(update_groups)
if deletes:
changes["delete-groups"] = sorted(deletes.keys())
return changes
def drop_session_ids(self, scopes=None):
"""Drop all session ids."""
new_session_ids = {}
if scopes:
session_ids = self._persist.get("session-ids", {})
for session_id, session_scope in iteritems(session_ids):
if session_scope not in scopes:
new_session_ids[session_id] = session_scope
self._persist.set("session-ids", new_session_ids)
def typeCheck(self, fieldDefs=None, filterUnknown=False):
"""
Check values of fields according to the field definition.
This method walks all named fields to check their values against their
type, and is typically used for forms received from other entities. The
field definition in C{fieldDefs} is used to check the field type.
If C{filterUnknown} is L{True}, fields that are not present in
C{fieldDefs} are removed from the form.
If the field type is L{None} (when not set by the sending entity),
the type from the field definitition is used, or C{'text-single'} if
that is not set.
If C{fieldDefs} is None, an empty dictionary is assumed. This is
useful for coercing boolean and JID values on forms with type
C{'form'}.
@param fieldDefs: Field definitions as a dictionary. See
L{wokkel.iwokkel.IPubSubService.getConfigurationOptions}
@type fieldDefs: L{dict}
@param filterUnknown: If L{True}, remove fields that are not in
C{fieldDefs}.
@type filterUnknown: L{bool}
"""
if fieldDefs is None:
fieldDefs = {}
filtered = []
for name, field in iteritems(self.fields):
if name in fieldDefs:
fieldDef = fieldDefs[name]
if "type" not in fieldDef:
fieldDef["type"] = "text-single"
if field.fieldType is None:
field.fieldType = fieldDef["type"]
elif field.fieldType != fieldDef["type"]:
raise TypeError("Field type for %r is %r, expected %r" % (name, field.fieldType, fieldDef["type"]))
else:
# Field type is correct
pass
field.typeCheck()
elif filterUnknown:
filtered.append(field)
elif field.fieldType is not None:
field.typeCheck()
else:
# Unknown field without type, no checking, no filtering
pass
for field in filtered:
self.removeField(field)
def _generateCacheEntry(provider):
dropin = CachedDropin(provider.__name__,
provider.__doc__)
for k, v in iteritems(provider.__dict__):
plugin = IPlugin(v, None)
if plugin is not None:
# Instantiated for its side-effects.
CachedPlugin(dropin, k, v.__doc__, list(providedBy(plugin)))
return dropin
def dispatch(self, obj, event=None):
"""
Dispatch an event.
When C{event} is L{None}, an XPath type event is triggered, and
C{obj} is assumed to be an instance of
L{Element<twisted.words.xish.domish.Element>}. Otherwise, C{event}
holds the name of the named event being triggered. In the latter case,
C{obj} can be anything.
@param obj: The object to be dispatched.
@param event: Optional event name.
@type event: C{str}
"""
foundTarget = False
self._dispatchDepth += 1
if event != None:
# Named event
observers = self._eventObservers
match = lambda query, obj: query == event
else:
# XPath event
observers = self._xpathObservers
match = lambda query, obj: query.matches(obj)
priorities = list(observers.keys())
priorities.sort()
priorities.reverse()
emptyLists = []
for priority in priorities:
for query, callbacklist in iteritems(observers[priority]):
if match(query, obj):
callbacklist.callback(obj)
foundTarget = True
if callbacklist.isEmpty():
emptyLists.append((priority, query))
for priority, query in emptyLists:
del observers[priority][query]
self._dispatchDepth -= 1
# If this is a dispatch within a dispatch, don't
# do anything with the updateQueue -- it needs to
# wait until we've back all the way out of the stack
if self._dispatchDepth == 0:
# Deal with pending update operations
for f in self._updateQueue:
f()
self._updateQueue = []
return foundTarget
def dispatch(self, obj, event=None):
"""
Dispatch an event.
When C{event} is L{None}, an XPath type event is triggered, and
C{obj} is assumed to be an instance of
L{Element<twisted.words.xish.domish.Element>}. Otherwise, C{event}
holds the name of the named event being triggered. In the latter case,
C{obj} can be anything.
@param obj: The object to be dispatched.
@param event: Optional event name.
@type event: C{str}
"""
foundTarget = False
self._dispatchDepth += 1
if event != None:
# Named event
observers = self._eventObservers
match = lambda query, obj: query == event
else:
# XPath event
observers = self._xpathObservers
match = lambda query, obj: query.matches(obj)
priorities = list(observers.keys())
priorities.sort()
priorities.reverse()
emptyLists = []
for priority in priorities:
for query, callbacklist in iteritems(observers[priority]):
if match(query, obj):
callbacklist.callback(obj)
foundTarget = True
if callbacklist.isEmpty():
emptyLists.append((priority, query))
for priority, query in emptyLists:
del observers[priority][query]
self._dispatchDepth -= 1
# If this is a dispatch within a dispatch, don't
# do anything with the updateQueue -- it needs to
# wait until we've back all the way out of the stack
if self._dispatchDepth == 0:
# Deal with pending update operations
for f in self._updateQueue:
f()
self._updateQueue = []
return foundTarget
def unauthorized(self, message, host, port):
m = self.responseFromRequest(401, message)
for (scheme, auth) in iteritems(self.authorizers):
chal = auth.getChallenge((host, port))
if chal is None:
value = '%s realm="%s"' % (scheme.title(), self.host)
else:
value = '%s %s,realm="%s"' % (scheme.title(), chal, self.host)
m.headers.setdefault('www-authenticate', []).append(value)
self.deliverResponse(m)
def unauthorized(self, message, host, port):
m = self.responseFromRequest(401, message)
for (scheme, auth) in iteritems(self.authorizers):
chal = auth.getChallenge((host, port))
if chal is None:
value = '%s realm="%s"' % (scheme.title(), self.host)
else:
value = '%s %s,realm="%s"' % (scheme.title(), chal, self.host)
m.headers.setdefault('www-authenticate', []).append(value)
self.deliverResponse(m)
def build_objects():
objs = {}
names = set()
for name, strategy in iteritems(to_create):
while True:
obj = strategy.example()
if obj.metadata.name not in names:
names.add(obj.metadata.name)
break
objs[name] = obj
return objs
class _DiscoRequest(generic.Request):
"""
A Service Discovery request.
@ivar verb: Type of request: C{'info'} or C{'items'}.
@type verb: C{str}
@ivar nodeIdentifier: Optional node to request info for.
@type nodeIdentifier: C{unicode}
"""
verb = None
nodeIdentifier = ''
_requestVerbMap = {
NS_DISCO_INFO: 'info',
NS_DISCO_ITEMS: 'items',
}
_verbRequestMap = dict(((v, k) for k, v in iteritems(_requestVerbMap)))
def __init__(self,
verb=None,
nodeIdentifier='',
recipient=None,
sender=None):
generic.Request.__init__(self,
recipient=recipient,
sender=sender,
stanzaType='get')
self.verb = verb
self.nodeIdentifier = nodeIdentifier
def parseElement(self, element):
generic.Request.parseElement(self, element)
verbElement = None
for child in element.elements():
if child.name == 'query' and child.uri in self._requestVerbMap:
self.verb = self._requestVerbMap[child.uri]
verbElement = child
if verbElement:
self.nodeIdentifier = verbElement.getAttribute('node', '')
def toElement(self):
element = generic.Request.toElement(self)
childURI = self._verbRequestMap[self.verb]
query = element.addElement((childURI, 'query'))
if self.nodeIdentifier:
query['node'] = self.nodeIdentifier
return element
def test_alwaysBytes(self):
"""
The output of L{BytesEnviron} should always be a L{dict} with L{bytes}
values and L{bytes} keys.
"""
result = bytesEnviron()
types = set()
for key, val in iteritems(result):
types.add(type(key))
types.add(type(val))
self.assertEqual(list(types), [bytes])
def __init__(self, to=None, show=None, statuses=None, priority=0):
Presence.__init__(self, to, type=None)
if show in ['away', 'xa', 'chat', 'dnd']:
self.addElement('show', content=show)
if statuses is not None:
for lang, status in iteritems(statuses):
s = self.addElement('status', content=status)
if lang:
s[(NS_XML, "lang")] = lang
if priority != 0:
self.addElement('priority', content=unicode(int(priority)))
def handleRequest(self, iq):
"""
Find a handler and wrap the call for sending a response stanza.
"""
def toResult(result, iq):
response = toResponse(iq, 'result')
if result:
if IElement.providedBy(result):
response.addChild(result)
else:
for element in result:
response.addChild(element)
return response
def checkNotImplemented(failure):
failure.trap(NotImplementedError)
raise error.StanzaError('feature-not-implemented')
def fromStanzaError(failure, iq):
failure.trap(error.StanzaError)
return failure.value.toResponse(iq)
def fromOtherError(failure, iq):
log.msg("Unhandled error in iq handler:", isError=True)
log.err(failure)
return error.StanzaError('internal-server-error').toResponse(iq)
handler = None
for queryString, method in iteritems(self.iqHandlers):
if xpath.internQuery(queryString).matches(iq):
handler = getattr(self, method)
if handler:
d = defer.maybeDeferred(handler, iq)
else:
d = defer.fail(NotImplementedError())
d.addCallback(toResult, iq)
d.addErrback(checkNotImplemented)
d.addErrback(fromStanzaError, iq)
d.addErrback(fromOtherError, iq)
d.addCallback(self.send)
iq.handled = True
def makeFields(self, values, fieldDefs=None, filterUnknown=True):
"""
Create fields from values and add them to this form.
This creates fields from a mapping of name to value(s) and adds them to
this form. It is typically used for generating outgoing forms.
If C{fieldDefs} is not L{None}, this is used to fill in
additional properties of fields, like the field types, labels and
possible options.
If C{filterUnknown} is L{True} and C{fieldDefs} is not L{None}, fields
will only be created from C{values} with a corresponding entry in
C{fieldDefs}.
If the field type is unknown, the field type is L{None}. When the form
is rendered using L{toElement}, these fields will have no C{'type'}
attribute, and it is up to the receiving party to interpret the values
properly (e.g. by knowing about the FORM_TYPE in C{formNamespace} and
the field name).
@param values: Values to create fields from.
@type values: L{dict}
@param fieldDefs: Field definitions as a dictionary. See
L{wokkel.iwokkel.IPubSubService.getConfigurationOptions}
@type fieldDefs: L{dict}
@param filterUnknown: If L{True}, ignore fields that are not in
C{fieldDefs}.
@type filterUnknown: L{bool}
"""
for name, value in iteritems(values):
fieldDict = {"var": name, "type": None}
if fieldDefs is not None:
if name in fieldDefs:
fieldDict.update(fieldDefs[name])
elif filterUnknown:
continue
if isinstance(value, list):
fieldDict["values"] = value
else:
fieldDict["value"] = value
self.addField(Field.fromDict(fieldDict))
def handleRequest(self, iq):
"""
Find a handler and wrap the call for sending a response stanza.
"""
def toResult(result, iq):
response = toResponse(iq, 'result')
if result:
if IElement.providedBy(result):
response.addChild(result)
else:
for element in result:
response.addChild(element)
return response
def checkNotImplemented(failure):
failure.trap(NotImplementedError)
raise error.StanzaError('feature-not-implemented')
def fromStanzaError(failure, iq):
failure.trap(error.StanzaError)
return failure.value.toResponse(iq)
def fromOtherError(failure, iq):
log.msg("Unhandled error in iq handler:", isError=True)
log.err(failure)
return error.StanzaError('internal-server-error').toResponse(iq)
handler = None
for queryString, method in iteritems(self.iqHandlers):
if xpath.internQuery(queryString).matches(iq):
handler = getattr(self, method)
if handler:
d = defer.maybeDeferred(handler, iq)
else:
d = defer.fail(NotImplementedError())
d.addCallback(toResult, iq)
d.addErrback(checkNotImplemented)
d.addErrback(fromStanzaError, iq)
d.addErrback(fromOtherError, iq)
d.addCallback(self.send)
iq.handled = True
def fromElement(element):
field = Field(None)
for eAttr, fAttr in iteritems({"type": "fieldType", "var": "var", "label": "label"}):
value = element.getAttribute(eAttr)
if value:
setattr(field, fAttr, value)
for child in element.elements():
if child.uri != NS_X_DATA:
continue
func = getattr(Field, "_parse_" + child.name, None)
if func:
func(field, child)
return field
def test_callbacksCalled(self):
"""
The correct callbacks fire, and that *only* those fire.
"""
sentencesByType = {
'GPGGA': [b'$GPGGA*56'],
'GPGLL': [b'$GPGLL*50'],
'GPGSA': [b'$GPGSA*42'],
'GPGSV': [b'$GPGSV*55'],
'GPHDT': [b'$GPHDT*4f'],
'GPRMC': [b'$GPRMC*4b']
}
for sentenceType, sentences in iteritems(sentencesByType):
for sentence in sentences:
self.protocol.lineReceived(sentence)
self.assertEqual(self.sentenceTypes, set([sentenceType]))
self.sentenceTypes.clear()
def test_callbacksCalled(self):
"""
The correct callbacks fire, and that *only* those fire.
"""
sentencesByType = {
"GPGGA": [b"$GPGGA*56"],
"GPGLL": [b"$GPGLL*50"],
"GPGSA": [b"$GPGSA*42"],
"GPGSV": [b"$GPGSV*55"],
"GPHDT": [b"$GPHDT*4f"],
"GPRMC": [b"$GPRMC*4b"],
}
for sentenceType, sentences in iteritems(sentencesByType):
for sentence in sentences:
self.protocol.lineReceived(sentence)
self.assertEqual(self.sentenceTypes, set([sentenceType]))
self.sentenceTypes.clear()
def test_callbacksCalled(self):
"""
The correct callbacks fire, and that *only* those fire.
"""
sentencesByType = {
'GPGGA': [b'$GPGGA*56'],
'GPGLL': [b'$GPGLL*50'],
'GPGSA': [b'$GPGSA*42'],
'GPGSV': [b'$GPGSV*55'],
'GPHDT': [b'$GPHDT*4f'],
'GPRMC': [b'$GPRMC*4b']
}
for sentenceType, sentences in iteritems(sentencesByType):
for sentence in sentences:
self.protocol.lineReceived(sentence)
self.assertEqual(self.sentenceTypes, set([sentenceType]))
self.sentenceTypes.clear()
def toElement(self):
if not self.available:
self.stanzaType = 'unavailable'
presence = BasePresence.toElement(self)
if self.available:
if self.show in ('chat', 'away', 'xa', 'dnd'):
presence.addElement('show', content=self.show)
if self.priority != 0:
presence.addElement('priority', content=unicode(self.priority))
for lang, text in iteritems(self.statuses):
status = presence.addElement('status', content=text)
if lang:
status[(NS_XML, 'lang')] = lang
return presence
def streamStarted(self, rootElement):
"""
Called by the XmlStream when the stream has started.
This extends L{Authenticator.streamStarted} to extract further
information from the stream headers from C{rootElement}.
"""
Authenticator.streamStarted(self, rootElement)
self.xmlstream.namespace = rootElement.defaultUri
if rootElement.hasAttribute("to"):
self.xmlstream.thisEntity = jid.internJID(rootElement["to"])
self.xmlstream.prefixes = {}
for prefix, uri in iteritems(rootElement.localPrefixes):
self.xmlstream.prefixes[uri] = prefix
self.xmlstream.sid = hexlify(randbytes.secureRandom(8)).decode('ascii')
def streamStarted(self, rootElement):
"""
Called by the XmlStream when the stream has started.
This extends L{Authenticator.streamStarted} to extract further
information from the stream headers from C{rootElement}.
"""
Authenticator.streamStarted(self, rootElement)
self.xmlstream.namespace = rootElement.defaultUri
if rootElement.hasAttribute("to"):
self.xmlstream.thisEntity = jid.internJID(rootElement["to"])
self.xmlstream.prefixes = {}
for prefix, uri in iteritems(rootElement.localPrefixes):
self.xmlstream.prefixes[uri] = prefix
self.xmlstream.sid = hexlify(randbytes.secureRandom(8)).decode("ascii")
def coerce(self, value):
new_dict = {}
if not isinstance(value, dict):
raise InvalidError("%r is not a dict." % (value,))
for k, v in iteritems(value):
if k not in self.schema:
raise InvalidError("%r is not a valid key as per %r"
% (k, self.schema))
try:
new_dict[k] = self.schema[k].coerce(v)
except InvalidError as e:
raise InvalidError(
"Value of %r key of dict %r could not coerce with %s: %s"
% (k, value, self.schema[k], e))
new_keys = set(new_dict.keys())
required_keys = set(self.schema.keys()) - self.optional
missing = required_keys - new_keys
if missing:
raise InvalidError("Missing keys %s" % (missing,))
return new_dict
def cmd_END(self):
"""
This the end token to a get or a stat operation.
"""
cmd = self._current.popleft()
if cmd.command == b"get":
if cmd.multiple:
values = {key: val[::2] for key, val in iteritems(cmd.values)}
cmd.success(values)
else:
cmd.success((cmd.flags, cmd.value))
elif cmd.command == b"gets":
if cmd.multiple:
cmd.success(cmd.values)
else:
cmd.success((cmd.flags, cmd.cas, cmd.value))
elif cmd.command == b"stats":
cmd.success(cmd.values)
else:
raise RuntimeError("Unexpected END response to %s command" %
(nativeString(cmd.command), ))
def streamStarted(self, rootElement):
xmlstream.ListenAuthenticator.streamStarted(self, rootElement)
if self.xmlstream.thisEntity:
targetDomain = self.xmlstream.thisEntity.host
else:
targetDomain = self.service.defaultDomain
def prepareStream(domain):
self.xmlstream.namespace = self.namespace
self.xmlstream.prefixes = {xmlstream.NS_STREAMS: 'stream',
NS_DIALBACK: 'db'}
if domain:
self.xmlstream.thisEntity = jid.internJID(domain)
try:
if xmlstream.NS_STREAMS != rootElement.uri or \
self.namespace != self.xmlstream.namespace or \
('db', NS_DIALBACK) not in iteritems(rootElement.localPrefixes):
raise error.StreamError('invalid-namespace')
if targetDomain and targetDomain not in self.service.domains:
raise error.StreamError('host-unknown')
except error.StreamError as exc:
prepareStream(self.service.defaultDomain)
self.xmlstream.sendStreamError(exc)
return
self.xmlstream.addObserver("//verify[@xmlns='%s']" % NS_DIALBACK,
trapStreamError(self.xmlstream,
self.onVerify))
self.xmlstream.addObserver("//result[@xmlns='%s']" % NS_DIALBACK,
self.onResult)
prepareStream(targetDomain)
self.xmlstream.sendHeader()
if self.xmlstream.version >= (1, 0):
features = domish.Element((xmlstream.NS_STREAMS, 'features'))
self.xmlstream.send(features)
def fromDict(fieldDict):
"""
Create a field from a dictionary.
This is a short hand for passing arguments directly on Field object
creation. The field type is represented by the C{'type'} key. For
C{'options'} the value is not a list of L{Option}s, but a dictionary
keyed by value, with an optional label as value.
"""
kwargs = fieldDict.copy()
if "type" in fieldDict:
kwargs["fieldType"] = fieldDict["type"]
del kwargs["type"]
if "options" in fieldDict:
options = []
for value, label in iteritems(fieldDict["options"]):
options.append(Option(value, label))
kwargs["options"] = options
return Field(**kwargs)
def handleRequest(self, xml):
"""
Find a handler and call it directly.
@param xml: XML stanza that may yield a handler being called.
@type xml: C{str}.
@return: Deferred that fires with the result of a handler for this
stanza. If no handler was found, the deferred has its errback
called with a C{NotImplementedError} exception.
"""
handler = None
iq = parseXml(xml)
for queryString, method in iteritems(self.service.iqHandlers):
if xpath.internQuery(queryString).matches(iq):
handler = getattr(self.service, method)
if handler:
d = defer.maybeDeferred(handler, iq)
else:
d = defer.fail(NotImplementedError())
return d
def handleRequest(self, xml):
"""
Find a handler and call it directly.
@param xml: XML stanza that may yield a handler being called.
@type xml: C{str}.
@return: Deferred that fires with the result of a handler for this
stanza. If no handler was found, the deferred has its errback
called with a C{NotImplementedError} exception.
"""
handler = None
iq = parseXml(xml)
for queryString, method in iteritems(self.service.iqHandlers):
if xpath.internQuery(queryString).matches(iq):
handler = getattr(self.service, method)
if handler:
d = defer.maybeDeferred(handler, iq)
else:
d = defer.fail(NotImplementedError())
return d
def cmd_END(self):
"""
This the end token to a get or a stat operation.
"""
cmd = self._current.popleft()
if cmd.command == b"get":
if cmd.multiple:
values = {key: val[::2] for key, val in iteritems(cmd.values)}
cmd.success(values)
else:
cmd.success((cmd.flags, cmd.value))
elif cmd.command == b"gets":
if cmd.multiple:
cmd.success(cmd.values)
else:
cmd.success((cmd.flags, cmd.cas, cmd.value))
elif cmd.command == b"stats":
cmd.success(cmd.values)
else:
raise RuntimeError(
"Unexpected END response to %s command" %
(nativeString(cmd.command),))
def send_message(self, urgent):
if not self.do_send:
return
self.do_send = False
graphs = list(self.registry.store.get_graphs())
for graph_id, filename, user in graphs:
if graph_id not in self._data:
if os.path.isfile(filename):
script_hash = self._get_script_hash(filename)
self._data[graph_id] = {
"values": [], "error": u"", "script-hash": script_hash}
message = {"type": self.message_type, "data": self._data}
new_data = {}
for graph_id, item in iteritems(self._data):
script_hash = item["script-hash"]
new_data[graph_id] = {
"values": [], "error": u"", "script-hash": script_hash}
self._data = new_data
self.registry.broker.send_message(message, self._session_id,
urgent=urgent)
def _unparse(self, directives):
"""
Create message string from directives.
@param directives: dictionary of directives (names to their values).
For certain directives, extra quotes are added, as
needed.
@type directives: C{dict} of C{str} to C{str}
@return: message string.
@rtype: C{str}.
"""
directive_list = []
for name, value in iteritems(directives):
if name in (b'username', b'realm', b'cnonce',
b'nonce', b'digest-uri', b'authzid', b'cipher'):
directive = name + b'=' + value
else:
directive = name + b'=' + value
directive_list.append(directive)
return b','.join(directive_list)
def unparseEndpoint(args, kwargs):
"""
Un-parse the already-parsed args and kwargs back into endpoint syntax.
@param args: C{:}-separated arguments
@type args: L{tuple} of native L{str}
@param kwargs: C{:} and then C{=}-separated keyword arguments
@type arguments: L{tuple} of native L{str}
@return: a string equivalent to the original format which this was parsed
as.
@rtype: native L{str}
"""
description = ':'.join(
[quoteStringArgument(str(arg)) for arg in args] +
sorted(['%s=%s' % (quoteStringArgument(str(key)),
quoteStringArgument(str(value)))
for key, value in iteritems(kwargs)
]))
return description
def _unparse(self, directives):
"""
Create message string from directives.
@param directives: dictionary of directives (names to their values).
For certain directives, extra quotes are added, as
needed.
@type directives: C{dict} of C{str} to C{str}
@return: message string.
@rtype: C{str}.
"""
directive_list = []
for name, value in iteritems(directives):
if name in (b'username', b'realm', b'cnonce', b'nonce',
b'digest-uri', b'authzid', b'cipher'):
directive = b'%s="%s"' % (name, value)
else:
directive = b'%s=%s' % (name, value)
directive_list.append(directive)
return b','.join(directive_list)
def unparseEndpoint(args, kwargs):
"""
Un-parse the already-parsed args and kwargs back into endpoint syntax.
@param args: C{:}-separated arguments
@type args: L{tuple} of native L{str}
@param kwargs: C{:} and then C{=}-separated keyword arguments
@type arguments: L{tuple} of native L{str}
@return: a string equivalent to the original format which this was parsed
as.
@rtype: native L{str}
"""
description = ':'.join(
[quoteStringArgument(str(arg)) for arg in args] + sorted([
'%s=%s' %
(quoteStringArgument(str(key)), quoteStringArgument(str(value)))
for key, value in iteritems(kwargs)
]))
return description
def __str__(self):
if self._str is not None:
return self._str
if hasattr(self, 'func'):
if hasattr(self.func, 'func_name'):
func = self.func.func_name
if hasattr(self.func, 'im_class'):
func = self.func.im_class.__name__ + '.' + func
else:
func = reflect.safe_repr(self.func)
else:
func = None
now = self.seconds()
L = [
"<DelayedCall %s [%ss] called=%s cancelled=%s" %
(id(self), self.time - now, self.called, self.cancelled)
]
if func is not None:
L.extend((" ", func, "("))
if self.args:
L.append(", ".join([reflect.safe_repr(e) for e in self.args]))
if self.kw:
L.append(", ")
if self.kw:
L.append(", ".join([
'%s=%s' % (k, reflect.safe_repr(v))
for (k, v) in iteritems(self.kw)
]))
L.append(")")
if self.debug:
L.append(("\n\ntraceback at creation: \n\n%s") %
(' '.join(self.creator)))
L.append('>')
return "".join(L)
def __call__(self, *children, **kw):
"""
Add children and change attributes on this tag.
This is implemented using __call__ because it then allows the natural
syntax::
table(tr1, tr2, width="100%", height="50%", border="1")
Children may be other tag instances, strings, functions, or any other
object which has a registered flatten.
Attributes may be 'transparent' tag instances (so that
C{a(href=transparent(data="foo", render=myhrefrenderer))} works),
strings, functions, or any other object which has a registered
flattener.
If the attribute is a python keyword, such as 'class', you can add an
underscore to the name, like 'class_'.
There is one special keyword argument, 'render', which will be used as
the name of the renderer and saved as the 'render' attribute of this
instance, rather than the DOM 'render' attribute in the attributes
dictionary.
"""
self.children.extend(children)
for k, v in iteritems(kw):
if k[-1] == '_':
k = k[:-1]
if k == 'render':
self.render = v
else:
self.attributes[k] = v
return self
def getPlugins(interface, package=None):
"""
Retrieve all plugins implementing the given interface beneath the given module.
@param interface: An interface class. Only plugins which implement this
interface will be returned.
@param package: A package beneath which plugins are installed. For
most uses, the default value is correct.
@return: An iterator of plugins.
"""
if package is None:
import twisted.plugins as package
allDropins = getCache(package)
for key, dropin in iteritems(allDropins):
for plugin in dropin.plugins:
try:
adapted = interface(plugin, None)
except:
log.err()
else:
if adapted is not None:
yield adapted
def getPlugins(interface, package=None):
"""
Retrieve all plugins implementing the given interface beneath the given module.
@param interface: An interface class. Only plugins which implement this
interface will be returned.
@param package: A package beneath which plugins are installed. For
most uses, the default value is correct.
@return: An iterator of plugins.
"""
if package is None:
import twisted.plugins as package
allDropins = getCache(package)
for key, dropin in iteritems(allDropins):
for plugin in dropin.plugins:
try:
adapted = interface(plugin, None)
except:
log.err()
else:
if adapted is not None:
yield adapted
def __call__(self, *children, **kw):
"""
Add children and change attributes on this tag.
This is implemented using __call__ because it then allows the natural
syntax::
table(tr1, tr2, width="100%", height="50%", border="1")
Children may be other tag instances, strings, functions, or any other
object which has a registered flatten.
Attributes may be 'transparent' tag instances (so that
C{a(href=transparent(data="foo", render=myhrefrenderer))} works),
strings, functions, or any other object which has a registered
flattener.
If the attribute is a python keyword, such as 'class', you can add an
underscore to the name, like 'class_'.
There is one special keyword argument, 'render', which will be used as
the name of the renderer and saved as the 'render' attribute of this
instance, rather than the DOM 'render' attribute in the attributes
dictionary.
"""
self.children.extend(children)
for k, v in iteritems(kw):
if k[-1] == '_':
k = k[:-1]
if k == 'render':
self.render = v
else:
self.attributes[k] = v
return self
def __init__(
self,
fieldType="text-single",
var=None,
value=None,
values=None,
options=None,
label=None,
desc=None,
required=False,
):
"""
Initialize this field.
See the identically named instance variables for descriptions.
If C{value} is not L{None}, it overrides C{values}, setting the
given value as the only value for this field.
"""
self.fieldType = fieldType
self.var = var
if value is not None:
self.value = value
else:
self.values = values or []
self.label = label
try:
self.options = [Option(optionValue, optionLabel) for optionValue, optionLabel in iteritems(options)]
except AttributeError:
self.options = options or []
self.desc = desc
self.required = required
def _checkProcessArgs(self, args, env):
"""
Check for valid arguments and environment to spawnProcess.
@return: A two element tuple giving values to use when creating the
process. The first element of the tuple is a C{list} of C{bytes}
giving the values for argv of the child process. The second element
of the tuple is either L{None} if C{env} was L{None} or a C{dict}
mapping C{bytes} environment keys to C{bytes} environment values.
"""
# Any unicode string which Python would successfully implicitly
# encode to a byte string would have worked before these explicit
# checks were added. Anything which would have failed with a
# UnicodeEncodeError during that implicit encoding step would have
# raised an exception in the child process and that would have been
# a pain in the butt to debug.
#
# So, we will explicitly attempt the same encoding which Python
# would implicitly do later. If it fails, we will report an error
# without ever spawning a child process. If it succeeds, we'll save
# the result so that Python doesn't need to do it implicitly later.
#
# -exarkun
defaultEncoding = sys.getfilesystemencoding()
# Common check function
def argChecker(arg):
"""
Return either L{bytes} or L{None}. If the given value is not
allowable for some reason, L{None} is returned. Otherwise, a
possibly different object which should be used in place of arg is
returned. This forces unicode encoding to happen now, rather than
implicitly later.
"""
if isinstance(arg, unicode):
try:
arg = arg.encode(defaultEncoding)
except UnicodeEncodeError:
return None
if isinstance(arg, bytes) and b'\0' not in arg:
return arg
return None
# Make a few tests to check input validity
if not isinstance(args, (tuple, list)):
raise TypeError("Arguments must be a tuple or list")
outputArgs = []
for arg in args:
arg = argChecker(arg)
if arg is None:
raise TypeError("Arguments contain a non-string value")
else:
outputArgs.append(arg)
outputEnv = None
if env is not None:
outputEnv = {}
for key, val in iteritems(env):
key = argChecker(key)
if key is None:
raise TypeError("Environment contains a non-string key")
val = argChecker(val)
if val is None:
raise TypeError("Environment contains a non-string value")
outputEnv[key] = val
return outputArgs, outputEnv
def getCache(module):
"""
Compute all the possible loadable plugins, while loading as few as
possible and hitting the filesystem as little as possible.
@param module: a Python module object. This represents a package to search
for plugins.
@return: a dictionary mapping module names to L{CachedDropin} instances.
"""
allCachesCombined = {}
mod = getModule(module.__name__)
# don't want to walk deep, only immediate children.
buckets = {}
# Fill buckets with modules by related entry on the given package's
# __path__. There's an abstraction inversion going on here, because this
# information is already represented internally in twisted.python.modules,
# but it's simple enough that I'm willing to live with it. If anyone else
# wants to fix up this iteration so that it's one path segment at a time,
# be my guest. --glyph
for plugmod in mod.iterModules():
fpp = plugmod.filePath.parent()
if fpp not in buckets:
buckets[fpp] = []
bucket = buckets[fpp]
bucket.append(plugmod)
for pseudoPackagePath, bucket in iteritems(buckets):
dropinPath = pseudoPackagePath.child('dropin.cache')
try:
lastCached = dropinPath.getModificationTime()
with dropinPath.open('r') as f:
dropinDotCache = pickle.load(f)
except:
dropinDotCache = {}
lastCached = 0
needsWrite = False
existingKeys = {}
for pluginModule in bucket:
pluginKey = pluginModule.name.split('.')[-1]
existingKeys[pluginKey] = True
if ((pluginKey not in dropinDotCache) or
(pluginModule.filePath.getModificationTime() >= lastCached)):
needsWrite = True
try:
provider = pluginModule.load()
except:
# dropinDotCache.pop(pluginKey, None)
log.err()
else:
entry = _generateCacheEntry(provider)
dropinDotCache[pluginKey] = entry
# Make sure that the cache doesn't contain any stale plugins.
for pluginKey in list(dropinDotCache.keys()):
if pluginKey not in existingKeys:
del dropinDotCache[pluginKey]
needsWrite = True
if needsWrite:
try:
dropinPath.setContent(pickle.dumps(dropinDotCache))
except OSError as e:
log.msg(
format=(
"Unable to write to plugin cache %(path)s: error "
"number %(errno)d"),
path=dropinPath.path, errno=e.errno)
except:
log.err(None, "Unexpected error while writing cache file")
allCachesCombined.update(dropinDotCache)
return allCachesCombined
def serialize(self, elem, closeElement=1, defaultUri=''):
# Optimization shortcuts
write = self.writelist.append
# Shortcut, check to see if elem is actually a chunk o' serialized XML
if isinstance(elem, SerializedXML):
write(elem)
return
# Shortcut, check to see if elem is actually a string (aka Cdata)
if isinstance(elem, StringType):
write(escapeToXml(elem))
return
# Further optimizations
name = elem.name
uri = elem.uri
defaultUri, currentDefaultUri = elem.defaultUri, defaultUri
for p, u in iteritems(elem.localPrefixes):
self.prefixes[u] = p
self.prefixStack.append(list(elem.localPrefixes.keys()))
# Inherit the default namespace
if defaultUri is None:
defaultUri = currentDefaultUri
if uri is None:
uri = defaultUri
prefix = None
if uri != defaultUri or uri in self.prefixes:
prefix = self.getPrefix(uri)
inScope = self.prefixInScope(prefix)
# Create the starttag
if not prefix:
write("<%s" % (name))
else:
write("<%s:%s" % (prefix, name))
if not inScope:
write(" xmlns:%s='%s'" % (prefix, uri))
self.prefixStack[-1].append(prefix)
inScope = True
if defaultUri != currentDefaultUri and \
(uri != defaultUri or not prefix or not inScope):
write(" xmlns='%s'" % (defaultUri))
for p, u in iteritems(elem.localPrefixes):
write(" xmlns:%s='%s'" % (p, u))
# Serialize attributes
for k,v in elem.attributes.items():
# If the attribute name is a tuple, it's a qualified attribute
if isinstance(k, tuple):
attr_uri, attr_name = k
attr_prefix = self.getPrefix(attr_uri)
if not self.prefixInScope(attr_prefix):
write(" xmlns:%s='%s'" % (attr_prefix, attr_uri))
self.prefixStack[-1].append(attr_prefix)
write(" %s:%s='%s'" % (attr_prefix, attr_name,
escapeToXml(v, 1)))
else:
write((" %s='%s'" % ( k, escapeToXml(v, 1))))
# Shortcut out if this is only going to return
# the element (i.e. no children)
if closeElement == 0:
write(">")
return
# Serialize children
if len(elem.children) > 0:
write(">")
for c in elem.children:
self.serialize(c, defaultUri=defaultUri)
# Add closing tag
if not prefix:
write("</%s>" % (name))
else:
write("</%s:%s>" % (prefix, name))
else:
write("/>")
self.prefixStack.pop()
def _flattenElement(request, root, slotData, renderFactory, dataEscaper):
"""
Make C{root} slightly more flat by yielding all its immediate contents as
strings, deferreds or generators that are recursive calls to itself.
@param request: A request object which will be passed to
L{IRenderable.render}.
@param root: An object to be made flatter. This may be of type C{unicode},
C{str}, L{slot}, L{Tag <twisted.web.template.Tag>}, L{tuple}, L{list},
L{GeneratorType}, L{Deferred}, or an object that implements
L{IRenderable}.
@param slotData: A C{list} of C{dict} mapping C{str} slot names to data
with which those slots will be replaced.
@param renderFactory: If not C{None}, an object that provides
L{IRenderable}.
@param dataEscaper: A 1-argument callable which takes L{bytes} or
L{unicode} and returns L{bytes}, quoted as appropriate for the
rendering context. This is really only one of two values:
L{attributeEscapingDoneOutside} or L{escapeForContent}, depending on
whether the rendering context is within an attribute or not. See the
explanation in L{flattenWithAttributeEscaping}.
@return: An iterator that eventually yields L{bytes} that should be written
to the output. However it may also yield other iterators or
L{Deferred}s; if it yields another iterator, the caller will iterate
it; if it yields a L{Deferred}, the result of that L{Deferred} will
either be L{bytes}, in which case it's written, or another generator,
in which case it is iterated. See L{_flattenTree} for the trampoline
that consumes said values.
@rtype: An iterator which yields L{bytes}, L{Deferred}, and more iterators
of the same type.
"""
def keepGoing(newRoot, dataEscaper=dataEscaper,
renderFactory=renderFactory):
return _flattenElement(request, newRoot, slotData, renderFactory,
dataEscaper)
if isinstance(root, (bytes, unicode)):
yield dataEscaper(root)
elif isinstance(root, slot):
slotValue = _getSlotValue(root.name, slotData, root.default)
yield keepGoing(slotValue)
elif isinstance(root, CDATA):
yield b'<![CDATA['
yield escapedCDATA(root.data)
yield b']]>'
elif isinstance(root, Comment):
yield b'<!--'
yield escapedComment(root.data)
yield b'-->'
elif isinstance(root, Tag):
slotData.append(root.slotData)
if root.render is not None:
rendererName = root.render
rootClone = root.clone(False)
rootClone.render = None
renderMethod = renderFactory.lookupRenderMethod(rendererName)
result = renderMethod(request, rootClone)
yield keepGoing(result)
slotData.pop()
return
if not root.tagName:
yield keepGoing(root.children)
return
yield b'<'
if isinstance(root.tagName, unicode):
tagName = root.tagName.encode('ascii')
else:
tagName = root.tagName
yield tagName
for k, v in iteritems(root.attributes):
if isinstance(k, unicode):
k = k.encode('ascii')
yield b' ' + k + b'="'
# Serialize the contents of the attribute, wrapping the results of
# that serialization so that _everything_ is quoted.
attribute = keepGoing(v, attributeEscapingDoneOutside)
yield flattenWithAttributeEscaping(attribute)
yield b'"'
if root.children or nativeString(tagName) not in voidElements:
yield b'>'
# Regardless of whether we're in an attribute or not, switch back
# to the escapeForContent dataEscaper. The contents of a tag must
# be quoted no matter what; in the top-level document, just so
# they're valid, and if they're within an attribute, they have to
# be quoted so that after applying the *un*-quoting required to re-
# parse the tag within the attribute, all the quoting is still
# correct.
yield keepGoing(root.children, escapeForContent)
yield b'</' + tagName + b'>'
else:
yield b' />'
elif isinstance(root, (tuple, list, GeneratorType)):
for element in root:
yield keepGoing(element)
elif isinstance(root, CharRef):
escaped = '&#%d;' % (root.ordinal,)
yield escaped.encode('ascii')
elif isinstance(root, Deferred):
yield root.addCallback(lambda result: (result, keepGoing(result)))
elif IRenderable.providedBy(root):
result = root.render(request)
yield keepGoing(result, renderFactory=root)
else:
raise UnsupportedType(root)
def test_avoidLeakingFileDescriptors(self):
"""
If associated with a protocol which does not provide
L{IFileDescriptorReceiver}, file descriptors received by the
L{IUNIXTransport} implementation are closed and a warning is emitted.
"""
# To verify this, establish a connection. Send one end of the
# connection over the IUNIXTransport implementation. After the copy
# should no longer exist, close the original. If the opposite end of
# the connection decides the connection is closed, the copy does not
# exist.
from socket import socketpair
probeClient, probeServer = socketpair()
events = []
addObserver(events.append)
self.addCleanup(removeObserver, events.append)
class RecordEndpointAddresses(SendFileDescriptor):
def connectionMade(self):
self.hostAddress = self.transport.getHost()
self.peerAddress = self.transport.getPeer()
SendFileDescriptor.connectionMade(self)
server = RecordEndpointAddresses(probeClient.fileno(), b"junk")
client = ConnectableProtocol()
runProtocolsWithReactor(self, server, client, self.endpoints)
# Get rid of the original reference to the socket.
probeClient.close()
# A non-blocking recv will return "" if the connection is closed, as
# desired. If the connection has not been closed, because the
# duplicate file descriptor is still open, it will fail with EAGAIN
# instead.
probeServer.setblocking(False)
self.assertEqual(b"", probeServer.recv(1024))
# This is a surprising circumstance, so it should be logged.
format = (
"%(protocolName)s (on %(hostAddress)r) does not "
"provide IFileDescriptorReceiver; closing file "
"descriptor received (from %(peerAddress)r).")
clsName = "ConnectableProtocol"
# Reverse host and peer, since the log event is from the client
# perspective.
expectedEvent = dict(hostAddress=server.peerAddress,
peerAddress=server.hostAddress,
protocolName=clsName,
format=format)
for logEvent in events:
for k, v in iteritems(expectedEvent):
if v != logEvent.get(k):
break
else:
# No mismatches were found, stop looking at events
break
else:
# No fully matching events were found, fail the test.
self.fail(
"Expected event (%s) not found in logged events (%s)" % (
expectedEvent, pformat(events,)))