## protocol.py
##
## Copyright (C) 2003-2005 Alexey "Snake" Nezhdanov
##
## 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 2, 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.
"""
Protocol module contains tools that are needed for processing of xmpp-related
data structures, including jabber-objects like JID or different stanzas and
sub- stanzas) handling routines
"""
from __future__ import annotations
from typing import Any
from typing import Iterable
from typing import Union
from typing import Optional
from typing import cast
import os
import time
import hashlib
import functools
import sqlite3
import warnings
from base64 import b64encode
from dataclasses import dataclass
from dataclasses import asdict
from gi.repository import GLib
from gi.repository import Gio
import idna
from nbxmpp.xmppiri import clean_iri
from nbxmpp.xmppiri import escape_ifragment
from nbxmpp.xmppiri import escape_inode
from nbxmpp.xmppiri import escape_ires
from nbxmpp.xmppiri import escape_ivalue
from nbxmpp.xmppiri import validate_ikey
from nbxmpp.xmppiri import validate_querytype
from nbxmpp.simplexml import Node
from nbxmpp.namespaces import Namespace
from nbxmpp.stringprep import nodeprep
from nbxmpp.stringprep import resourceprep
from nbxmpp.precis import enforce_precis_username
from nbxmpp.precis import enforce_precis_opaque
def ascii_upper(s):
return s.upper()
SASL_AUTH_MECHS = [
'SCRAM-SHA-512-PLUS',
'SCRAM-SHA-256-PLUS',
'SCRAM-SHA-1-PLUS',
'SCRAM-SHA-512',
'SCRAM-SHA-256',
'SCRAM-SHA-1',
'GSSAPI',
'PLAIN',
'EXTERNAL',
'ANONYMOUS',
]
SASL_ERROR_CONDITIONS = [
'aborted',
'account-disabled',
'credentials-expired',
'encryption-required',
'incorrect-encoding',
'invalid-authzid',
'invalid-mechanism',
'mechanism-too-weak',
'malformed-request',
'not-authorized',
'temporary-auth-failure',
]
ERRORS = {
'urn:ietf:params:xml:ns:xmpp-sasl aborted': ['',
'',
'The receiving entity acknowledges an element sent by the initiating entity; sent in reply to the element.'],
'urn:ietf:params:xml:ns:xmpp-sasl incorrect-encoding': ['',
'',
'The data provided by the initiating entity could not be processed because the [BASE64]Josefsson, S., The Base16, Base32, and Base64 Data Encodings, July 2003. encoding is incorrect (e.g., because the encoding does not adhere to the definition in Section 3 of [BASE64]Josefsson, S., The Base16, Base32, and Base64 Data Encodings, July 2003.); sent in reply to a element or an element with initial response data.'],
'urn:ietf:params:xml:ns:xmpp-sasl invalid-authzid': ['',
'',
'The authzid provided by the initiating entity is invalid, either because it is incorrectly formatted or because the initiating entity does not have permissions to authorize that ID; sent in reply to a element or an element with initial response data.'],
'urn:ietf:params:xml:ns:xmpp-sasl invalid-mechanism': ['',
'',
'The initiating entity did not provide a mechanism or requested a mechanism that is not supported by the receiving entity; sent in reply to an element.'],
'urn:ietf:params:xml:ns:xmpp-sasl mechanism-too-weak': ['',
'',
'The mechanism requested by the initiating entity is weaker than server policy permits for that initiating entity; sent in reply to a element or an element with initial response data.'],
'urn:ietf:params:xml:ns:xmpp-sasl not-authorized': ['',
'',
'The authentication failed because the initiating entity did not provide valid credentials (this includes but is not limited to the case of an unknown username); sent in reply to a element or an element with initial response data.'],
'urn:ietf:params:xml:ns:xmpp-sasl temporary-auth-failure': ['',
'',
'The authentication failed because of a temporary error condition within the receiving entity; sent in reply to an element or element.'],
'urn:ietf:params:xml:ns:xmpp-stanzas bad-request': ['400',
'modify',
'The sender has sent XML that is malformed or that cannot be processed.'],
'urn:ietf:params:xml:ns:xmpp-stanzas conflict': ['409',
'cancel',
'Access cannot be granted because an existing resource or session exists with the same name or address.'],
'urn:ietf:params:xml:ns:xmpp-stanzas feature-not-implemented': ['501',
'cancel',
'The feature requested is not implemented by the recipient or server and therefore cannot be processed.'],
'urn:ietf:params:xml:ns:xmpp-stanzas forbidden': ['403',
'auth',
'The requesting entity does not possess the required permissions to perform the action.'],
'urn:ietf:params:xml:ns:xmpp-stanzas gone': ['302',
'modify',
'The recipient or server can no longer be contacted at this address.'],
'urn:ietf:params:xml:ns:xmpp-stanzas internal-server-error': ['500',
'wait',
'The server could not process the stanza because of a misconfiguration or an otherwise-undefined internal server error.'],
'urn:ietf:params:xml:ns:xmpp-stanzas item-not-found': ['404',
'cancel',
'The addressed JID or item requested cannot be found.'],
'urn:ietf:params:xml:ns:xmpp-stanzas jid-malformed': ['400',
'modify',
"The value of the 'to' attribute in the sender's stanza does not adhere to the syntax defined in Addressing Scheme."],
'urn:ietf:params:xml:ns:xmpp-stanzas not-acceptable': ['406',
'cancel',
'The recipient or server understands the request but is refusing to process it because it does not meet criteria defined by the recipient or server.'],
'urn:ietf:params:xml:ns:xmpp-stanzas not-allowed': ['405',
'cancel',
'The recipient or server does not allow any entity to perform the action.'],
'urn:ietf:params:xml:ns:xmpp-stanzas not-authorized': ['401',
'auth',
'The sender must provide proper credentials before being allowed to perform the action, or has provided improper credentials.'],
'urn:ietf:params:xml:ns:xmpp-stanzas payment-required': ['402',
'auth',
'The requesting entity is not authorized to access the requested service because payment is required.'],
'urn:ietf:params:xml:ns:xmpp-stanzas recipient-unavailable': ['404',
'wait',
'The intended recipient is temporarily unavailable.'],
'urn:ietf:params:xml:ns:xmpp-stanzas redirect': ['302',
'modify',
'The recipient or server is redirecting requests for this information to another entity.'],
'urn:ietf:params:xml:ns:xmpp-stanzas registration-required': ['407',
'auth',
'The requesting entity is not authorized to access the requested service because registration is required.'],
'urn:ietf:params:xml:ns:xmpp-stanzas remote-server-not-found': ['404',
'cancel',
'A remote server or service specified as part or all of the JID of the intended recipient does not exist.'],
'urn:ietf:params:xml:ns:xmpp-stanzas remote-server-timeout': ['504',
'wait',
'A remote server or service specified as part or all of the JID of the intended recipient could not be contacted within a reasonable amount of time.'],
'urn:ietf:params:xml:ns:xmpp-stanzas resource-constraint': ['500',
'wait',
'The server or recipient lacks the system resources necessary to service the request.'],
'urn:ietf:params:xml:ns:xmpp-stanzas service-unavailable': ['503',
'cancel',
'The server or recipient does not currently provide the requested service.'],
'urn:ietf:params:xml:ns:xmpp-stanzas subscription-required': ['407',
'auth',
'The requesting entity is not authorized to access the requested service because a subscription is required.'],
'urn:ietf:params:xml:ns:xmpp-stanzas undefined-condition': ['500',
'',
'Undefined Condition'],
'urn:ietf:params:xml:ns:xmpp-stanzas unexpected-request': ['400',
'wait',
'The recipient or server understood the request but was not expecting it at this time (e.g., the request was out of order).'],
'urn:ietf:params:xml:ns:xmpp-streams bad-format': ['',
'',
'The entity has sent XML that cannot be processed.'],
'urn:ietf:params:xml:ns:xmpp-streams bad-namespace-prefix': ['',
'',
'The entity has sent a namespace prefix that is unsupported, or has sent no namespace prefix on an element that requires such a prefix.'],
'urn:ietf:params:xml:ns:xmpp-streams conflict': ['',
'',
'The server is closing the active stream for this entity because a new stream has been initiated that conflicts with the existing stream.'],
'urn:ietf:params:xml:ns:xmpp-streams connection-timeout': ['',
'',
'The entity has not generated any traffic over the stream for some period of time.'],
'urn:ietf:params:xml:ns:xmpp-streams host-gone': ['',
'',
"The value of the 'to' attribute provided by the initiating entity in the stream header corresponds to a hostname that is no longer hosted by the server."],
'urn:ietf:params:xml:ns:xmpp-streams host-unknown': ['',
'',
"The value of the 'to' attribute provided by the initiating entity in the stream header does not correspond to a hostname that is hosted by the server."],
'urn:ietf:params:xml:ns:xmpp-streams improper-addressing': ['',
'',
"A stanza sent between two servers lacks a 'to' or 'from' attribute (or the attribute has no value)."],
'urn:ietf:params:xml:ns:xmpp-streams internal-server-error': ['',
'',
'The server has experienced a misconfiguration or an otherwise-undefined internal error that prevents it from servicing the stream.'],
'urn:ietf:params:xml:ns:xmpp-streams invalid-from': ['cancel',
'',
"The JID or hostname provided in a 'from' address does not match an authorized JID or validated domain negotiated between servers via SASL or dialback, or between a client and a server via authentication and resource authorization."],
'urn:ietf:params:xml:ns:xmpp-streams invalid-id': ['',
'',
'The stream ID or dialback ID is invalid or does not match an ID previously provided.'],
'urn:ietf:params:xml:ns:xmpp-streams invalid-namespace': ['',
'',
'The streams namespace name is something other than "http://etherx.jabber.org/streams" or the dialback namespace name is something other than "jabber:server:dialback".'],
'urn:ietf:params:xml:ns:xmpp-streams invalid-xml': ['',
'',
'The entity has sent invalid XML over the stream to a server that performs validation.'],
'urn:ietf:params:xml:ns:xmpp-streams not-authorized': ['',
'',
'The entity has attempted to send data before the stream has been authenticated, or otherwise is not authorized to perform an action related to stream negotiation.'],
'urn:ietf:params:xml:ns:xmpp-streams policy-violation': ['',
'',
'The entity has violated some local service policy.'],
'urn:ietf:params:xml:ns:xmpp-streams remote-connection-failed': ['',
'',
'The server is unable to properly connect to a remote resource that is required for authentication or authorization.'],
'urn:ietf:params:xml:ns:xmpp-streams resource-constraint': ['',
'',
'The server lacks the system resources necessary to service the stream.'],
'urn:ietf:params:xml:ns:xmpp-streams restricted-xml': ['',
'',
'The entity has attempted to send restricted XML features such as a comment, processing instruction, DTD, entity reference, or unescaped character.'],
'urn:ietf:params:xml:ns:xmpp-streams see-other-host': ['',
'',
'The server will not provide service to the initiating entity but is redirecting traffic to another host.'],
'urn:ietf:params:xml:ns:xmpp-streams system-shutdown': ['',
'',
'The server is being shut down and all active streams are being closed.'],
'urn:ietf:params:xml:ns:xmpp-streams undefined-condition': ['',
'',
'The error condition is not one of those defined by the other conditions in this list.'],
'urn:ietf:params:xml:ns:xmpp-streams unsupported-encoding': ['',
'',
'The initiating entity has encoded the stream in an encoding that is not supported by the server.'],
'urn:ietf:params:xml:ns:xmpp-streams unsupported-stanza-type': ['',
'',
'The initiating entity has sent a first-level child of the stream that is not supported by the server.'],
'urn:ietf:params:xml:ns:xmpp-streams unsupported-version': ['',
'',
"The value of the 'version' attribute provided by the initiating entity in the stream header specifies a version of XMPP that is not supported by the server."],
'urn:ietf:params:xml:ns:xmpp-streams xml-not-well-formed': ['',
'',
'The initiating entity has sent XML that is not well-formed.']
}
_errorcodes = {
'302': 'redirect',
'400': 'unexpected-request',
'401': 'not-authorized',
'402': 'payment-required',
'403': 'forbidden',
'404': 'remote-server-not-found',
'405': 'not-allowed',
'406': 'not-acceptable',
'407': 'subscription-required',
'409': 'conflict',
'500': 'undefined-condition',
'501': 'feature-not-implemented',
'503': 'service-unavailable',
'504': 'remote-server-timeout',
'cancel': 'invalid-from'
}
_localpart_escape_chars = ' "&\'/:<>@'
STREAM_NOT_AUTHORIZED = 'urn:ietf:params:xml:ns:xmpp-streams not-authorized'
STREAM_REMOTE_CONNECTION_FAILED = 'urn:ietf:params:xml:ns:xmpp-streams remote-connection-failed'
SASL_MECHANISM_TOO_WEAK = 'urn:ietf:params:xml:ns:xmpp-sasl mechanism-too-weak'
STREAM_XML_NOT_WELL_FORMED = 'urn:ietf:params:xml:ns:xmpp-streams xml-not-well-formed'
ERR_JID_MALFORMED = 'urn:ietf:params:xml:ns:xmpp-stanzas jid-malformed'
STREAM_SEE_OTHER_HOST = 'urn:ietf:params:xml:ns:xmpp-streams see-other-host'
STREAM_BAD_NAMESPACE_PREFIX = 'urn:ietf:params:xml:ns:xmpp-streams bad-namespace-prefix'
ERR_SERVICE_UNAVAILABLE = 'urn:ietf:params:xml:ns:xmpp-stanzas service-unavailable'
STREAM_CONNECTION_TIMEOUT = 'urn:ietf:params:xml:ns:xmpp-streams connection-timeout'
STREAM_UNSUPPORTED_VERSION = 'urn:ietf:params:xml:ns:xmpp-streams unsupported-version'
STREAM_IMPROPER_ADDRESSING = 'urn:ietf:params:xml:ns:xmpp-streams improper-addressing'
STREAM_UNDEFINED_CONDITION = 'urn:ietf:params:xml:ns:xmpp-streams undefined-condition'
SASL_NOT_AUTHORIZED = 'urn:ietf:params:xml:ns:xmpp-sasl not-authorized'
ERR_GONE = 'urn:ietf:params:xml:ns:xmpp-stanzas gone'
SASL_TEMPORARY_AUTH_FAILURE = 'urn:ietf:params:xml:ns:xmpp-sasl temporary-auth-failure'
ERR_REMOTE_SERVER_NOT_FOUND = 'urn:ietf:params:xml:ns:xmpp-stanzas remote-server-not-found'
ERR_UNEXPECTED_REQUEST = 'urn:ietf:params:xml:ns:xmpp-stanzas unexpected-request'
ERR_RECIPIENT_UNAVAILABLE = 'urn:ietf:params:xml:ns:xmpp-stanzas recipient-unavailable'
ERR_CONFLICT = 'urn:ietf:params:xml:ns:xmpp-stanzas conflict'
STREAM_SYSTEM_SHUTDOWN = 'urn:ietf:params:xml:ns:xmpp-streams system-shutdown'
STREAM_BAD_FORMAT = 'urn:ietf:params:xml:ns:xmpp-streams bad-format'
ERR_SUBSCRIPTION_REQUIRED = 'urn:ietf:params:xml:ns:xmpp-stanzas subscription-required'
STREAM_INTERNAL_SERVER_ERROR = 'urn:ietf:params:xml:ns:xmpp-streams internal-server-error'
ERR_NOT_AUTHORIZED = 'urn:ietf:params:xml:ns:xmpp-stanzas not-authorized'
SASL_ABORTED = 'urn:ietf:params:xml:ns:xmpp-sasl aborted'
ERR_REGISTRATION_REQUIRED = 'urn:ietf:params:xml:ns:xmpp-stanzas registration-required'
ERR_INTERNAL_SERVER_ERROR = 'urn:ietf:params:xml:ns:xmpp-stanzas internal-server-error'
SASL_INCORRECT_ENCODING = 'urn:ietf:params:xml:ns:xmpp-sasl incorrect-encoding'
STREAM_HOST_GONE = 'urn:ietf:params:xml:ns:xmpp-streams host-gone'
STREAM_POLICY_VIOLATION = 'urn:ietf:params:xml:ns:xmpp-streams policy-violation'
STREAM_INVALID_XML = 'urn:ietf:params:xml:ns:xmpp-streams invalid-xml'
STREAM_CONFLICT = 'urn:ietf:params:xml:ns:xmpp-streams conflict'
STREAM_RESOURCE_CONSTRAINT = 'urn:ietf:params:xml:ns:xmpp-streams resource-constraint'
STREAM_UNSUPPORTED_ENCODING = 'urn:ietf:params:xml:ns:xmpp-streams unsupported-encoding'
ERR_NOT_ALLOWED = 'urn:ietf:params:xml:ns:xmpp-stanzas not-allowed'
ERR_ITEM_NOT_FOUND = 'urn:ietf:params:xml:ns:xmpp-stanzas item-not-found'
ERR_NOT_ACCEPTABLE = 'urn:ietf:params:xml:ns:xmpp-stanzas not-acceptable'
STREAM_INVALID_FROM = 'urn:ietf:params:xml:ns:xmpp-streams invalid-from'
ERR_FEATURE_NOT_IMPLEMENTED = 'urn:ietf:params:xml:ns:xmpp-stanzas feature-not-implemented'
ERR_BAD_REQUEST = 'urn:ietf:params:xml:ns:xmpp-stanzas bad-request'
STREAM_INVALID_ID = 'urn:ietf:params:xml:ns:xmpp-streams invalid-id'
STREAM_HOST_UNKNOWN = 'urn:ietf:params:xml:ns:xmpp-streams host-unknown'
ERR_UNDEFINED_CONDITION = 'urn:ietf:params:xml:ns:xmpp-stanzas undefined-condition'
SASL_INVALID_MECHANISM = 'urn:ietf:params:xml:ns:xmpp-sasl invalid-mechanism'
STREAM_RESTRICTED_XML = 'urn:ietf:params:xml:ns:xmpp-streams restricted-xml'
ERR_RESOURCE_CONSTRAINT = 'urn:ietf:params:xml:ns:xmpp-stanzas resource-constraint'
ERR_REMOTE_SERVER_TIMEOUT = 'urn:ietf:params:xml:ns:xmpp-stanzas remote-server-timeout'
SASL_INVALID_AUTHZID = 'urn:ietf:params:xml:ns:xmpp-sasl invalid-authzid'
ERR_PAYMENT_REQUIRED = 'urn:ietf:params:xml:ns:xmpp-stanzas payment-required'
STREAM_INVALID_NAMESPACE = 'urn:ietf:params:xml:ns:xmpp-streams invalid-namespace'
ERR_REDIRECT = 'urn:ietf:params:xml:ns:xmpp-stanzas redirect'
STREAM_UNSUPPORTED_STANZA_TYPE = 'urn:ietf:params:xml:ns:xmpp-streams unsupported-stanza-type'
ERR_FORBIDDEN = 'urn:ietf:params:xml:ns:xmpp-stanzas forbidden'
def isResultNode(node):
"""
Return true if the node is a positive reply
"""
return node and node.getType() == 'result'
def isErrorNode(node):
"""
Return true if the node is a negative reply
"""
return node and node.getType() == 'error'
def isMucPM(message):
muc_user = message.getTag('x', namespace=Namespace.MUC_USER)
return (message.getType() in ('chat', 'error') and
muc_user is not None and
not muc_user.getChildren())
class NodeProcessed(Exception):
"""
Exception that should be raised by handler when the handling should be
stopped
"""
class StreamError(Exception):
"""
Base exception class for stream errors
"""
class BadFormat(StreamError):
pass
class BadNamespacePrefix(StreamError):
pass
class Conflict(StreamError):
pass
class ConnectionTimeout(StreamError):
pass
class HostGone(StreamError):
pass
class HostUnknown(StreamError):
pass
class ImproperAddressing(StreamError):
pass
class InternalServerError(StreamError):
pass
class InvalidFrom(StreamError):
pass
class InvalidID(StreamError):
pass
class InvalidNamespace(StreamError):
pass
class InvalidXML(StreamError):
pass
class NotAuthorized(StreamError):
pass
class PolicyViolation(StreamError):
pass
class RemoteConnectionFailed(StreamError):
pass
class ResourceConstraint(StreamError):
pass
class RestrictedXML(StreamError):
pass
class SeeOtherHost(StreamError):
pass
class SystemShutdown(StreamError):
pass
class UndefinedCondition(StreamError):
pass
class UnsupportedEncoding(StreamError):
pass
class UnsupportedStanzaType(StreamError):
pass
class UnsupportedVersion(StreamError):
pass
class XMLNotWellFormed(StreamError):
pass
class InvalidStanza(Exception):
pass
class InvalidJid(Exception):
pass
class LocalpartByteLimit(InvalidJid):
def __init__(self):
InvalidJid.__init__(self, 'Localpart must be between 1 and 1023 bytes')
class LocalpartNotAllowedChar(InvalidJid):
def __init__(self):
InvalidJid.__init__(self, 'Not allowed character in localpart')
class ResourcepartByteLimit(InvalidJid):
def __init__(self):
InvalidJid.__init__(self,
'Resourcepart must be between 1 and 1023 bytes')
class ResourcepartNotAllowedChar(InvalidJid):
def __init__(self):
InvalidJid.__init__(self, 'Not allowed character in resourcepart')
class DomainpartByteLimit(InvalidJid):
def __init__(self):
InvalidJid.__init__(self, 'Domainpart must be between 1 and 1023 bytes')
class DomainpartNotAllowedChar(InvalidJid):
def __init__(self):
InvalidJid.__init__(self, 'Not allowed character in domainpart')
class StanzaMalformed(Exception):
pass
class DiscoInfoMalformed(Exception):
pass
stream_exceptions = {'bad-format': BadFormat,
'bad-namespace-prefix': BadNamespacePrefix,
'conflict': Conflict,
'connection-timeout': ConnectionTimeout,
'host-gone': HostGone,
'host-unknown': HostUnknown,
'improper-addressing': ImproperAddressing,
'internal-server-error': InternalServerError,
'invalid-from': InvalidFrom,
'invalid-id': InvalidID,
'invalid-namespace': InvalidNamespace,
'invalid-xml': InvalidXML,
'not-authorized': NotAuthorized,
'policy-violation': PolicyViolation,
'remote-connection-failed': RemoteConnectionFailed,
'resource-constraint': ResourceConstraint,
'restricted-xml': RestrictedXML,
'see-other-host': SeeOtherHost,
'system-shutdown': SystemShutdown,
'undefined-condition': UndefinedCondition,
'unsupported-encoding': UnsupportedEncoding,
'unsupported-stanza-type': UnsupportedStanzaType,
'unsupported-version': UnsupportedVersion,
'xml-not-well-formed': XMLNotWellFormed}
def deprecation_warning(message):
warnings.warn(message, DeprecationWarning)
def split_jid_string(
jid_string: str
) -> tuple[str | None, str, str | None]:
# https://tools.ietf.org/html/rfc7622#section-3.2
# Remove any portion from the first '/' character to the end of the
# string (if there is a '/' character present).
# Remove any portion from the beginning of the string to the first
# '@' character (if there is an '@' character present).
if jid_string.find('/') != -1:
rest, resourcepart = jid_string.split('/', 1)
else:
rest, resourcepart = jid_string, None
if rest.find('@') != -1:
localpart, domainpart = rest.split('@', 1)
else:
localpart, domainpart = None, rest
return localpart, domainpart, resourcepart
@functools.lru_cache(maxsize=None)
def validate_localpart(localpart: str) -> str:
if not localpart or len(localpart.encode()) > 1023:
raise LocalpartByteLimit
if os.environ.get('NBXMPP_ENFORCE_PRECIS') is None:
try:
return nodeprep(localpart)
except Exception:
try:
return enforce_precis_username(localpart)
except Exception:
raise LocalpartNotAllowedChar
try:
return enforce_precis_username(localpart)
except Exception:
raise LocalpartNotAllowedChar
@functools.lru_cache(maxsize=None)
def validate_resourcepart(resourcepart: str) -> str:
if not resourcepart or len(resourcepart.encode()) > 1023:
raise ResourcepartByteLimit
if os.environ.get('NBXMPP_ENFORCE_PRECIS') is None:
try:
return resourceprep(resourcepart)
except Exception:
try:
return enforce_precis_opaque(resourcepart)
except Exception:
raise ResourcepartNotAllowedChar
try:
return enforce_precis_opaque(resourcepart)
except Exception:
raise ResourcepartNotAllowedChar
@functools.lru_cache(maxsize=None)
def validate_domainpart(domainpart: str) -> str:
if not domainpart:
raise DomainpartByteLimit
ip_address = domainpart.strip('[]')
if GLib.hostname_is_ip_address(ip_address):
return ip_address
length = len(domainpart.encode())
if length == 0 or length > 1023:
raise DomainpartByteLimit
if domainpart.endswith('.'): # RFC7622, 3.2
domainpart = domainpart[:-1]
try:
domainpart = idna2008_prep(domainpart)
except Exception:
raise DomainpartNotAllowedChar
return domainpart
@functools.lru_cache(maxsize=None)
def idna2008_prep(domain: str, to_ascii: bool = False) -> str:
'''
Prepare with UTS46 case mapping to stay compatibel with the IDNA2003
mapping. Further try to encode the domain to catch illegal domains.
Only return the case mapped domain because on the XMPP wire,UTF8 domains
are fine.
'''
domain = idna.uts46_remap(domain)
encoded_domain = idna.encode(domain)
if to_ascii:
return encoded_domain.decode()
return domain
@functools.lru_cache(maxsize=None)
def escape_localpart(localpart: str) -> str:
# https://xmpp.org/extensions/xep-0106.html#bizrules-algorithm
#
# If there are any instances of character sequences that correspond
# to escapings of the disallowed characters
# (e.g., the character sequence "\27") or the escaping character
# (i.e., the character sequence "\5c") in the source address,
# the leading backslash character MUST be escaped to the character
# sequence "\5c"
for char in '\\' + _localpart_escape_chars:
seq = "\\{:02x}".format(ord(char))
localpart = localpart.replace(seq, "\\5c{:02x}".format(ord(char)))
# Escape all other chars
for char in _localpart_escape_chars:
localpart = localpart.replace(char, "\\{:02x}".format(ord(char)))
return localpart
@functools.lru_cache(maxsize=None)
def unescape_localpart(localpart: str) -> str:
if localpart.startswith('\\20') or localpart.endswith('\\20'):
# Escaped JIDs are not allowed to start or end with \20
# so this localpart must be already unescaped
return localpart
for char in _localpart_escape_chars:
seq = "\\{:02x}".format(ord(char))
localpart = localpart.replace(seq, char)
for char in _localpart_escape_chars + "\\":
seq = "\\5c{:02x}".format(ord(char))
localpart = localpart.replace(seq, "\\{:02x}".format(ord(char)))
return localpart
@dataclass(frozen=True)
class JID:
localpart: Optional[str] = None
domain: Optional[str] = None
resource: Optional[str] = None
def __init__(self,
localpart: Optional[str] = None,
domain: Optional[str] = None,
resource: Optional[str] = None):
if localpart is not None:
localpart = validate_localpart(localpart)
object.__setattr__(self, "localpart", localpart)
domain = validate_domainpart(domain)
object.__setattr__(self, "domain", domain)
if resource is not None:
resource = validate_resourcepart(resource)
object.__setattr__(self, "resource", resource)
@classmethod
@functools.lru_cache(maxsize=None)
def from_string(cls, jid_string: str, force_bare: bool = False) -> JID:
localpart, domainpart, resourcepart = split_jid_string(jid_string)
if force_bare:
resourcepart = None
return cls(localpart=localpart,
domain=domainpart,
resource=resourcepart)
@classmethod
@functools.lru_cache(maxsize=None)
def from_user_input(cls, user_input: str, escaped: bool = False) -> JID:
# Use this if we want JIDs to be escaped according to XEP-0106
# The standard JID parsing cannot be applied because user_input is
# not a valid JID.
# Only user_input which after escaping result in a bare JID can be
# successfully parsed.
# The assumpution is user_input is a bare JID so we start with an
# rsplit on @ because we assume there is no resource, so the char @
# in the localpart can later be escaped.
if escaped:
# for convenience
return cls.from_string(user_input)
if '@' in user_input:
localpart, domainpart = user_input.rsplit('@', 1)
if localpart.startswith(' ') or localpart.endswith(' '):
raise LocalpartNotAllowedChar
localpart = escape_localpart(localpart)
else:
localpart = None
domainpart = user_input
return cls(localpart=localpart,
domain=domainpart,
resource=None)
@classmethod
@functools.lru_cache(maxsize=None)
def from_iri(cls, iri_str: str, *, force_bare: bool = False) -> JID:
iri_str = clean_iri(iri_str)
localpart, domainpart, resourcepart = split_jid_string(iri_str)
if localpart is not None:
localpart = GLib.Uri.unescape_string(localpart)
if force_bare:
resourcepart = None
if resourcepart is not None:
resourcepart = GLib.Uri.unescape_string(resourcepart)
return cls(localpart=localpart,
domain=domainpart,
resource=resourcepart)
def __str__(self) -> str:
if self.localpart:
jid = f'{self.localpart}@{self.domain}'
else:
jid = cast(str, self.domain)
if self.resource is not None:
return f'{jid}/{self.resource}'
return jid
def __conform__(self, protocol: sqlite3.PrepareProtocol):
if protocol is sqlite3.PrepareProtocol:
return str(self)
raise ValueError
def __hash__(self):
return hash(str(self))
def __eq__(self, other: object) -> bool:
if isinstance(other, str):
try:
return JID.from_string(other) == self
except Exception:
return False
if isinstance(other, JID):
return (self.localpart == other.localpart and
self.domain == other.domain and
self.resource == other.resource)
return False
def __ne__(self, other: object) -> bool:
return not self.__eq__(other)
def domain_to_ascii(self) -> str:
return idna2008_prep(self.domain, to_ascii=True)
@property
def bare(self) -> str:
if self.localpart is not None:
return f'{self.localpart}@{self.domain}'
return self.domain
@property
def is_bare(self) -> bool:
return self.resource is None
def new_as_bare(self) -> JID:
if self.resource is None:
return self
return JID.from_string(self.bare)
def bare_match(self, other: Union[str, JID]) -> bool:
if isinstance(other, str):
other = JID.from_string(other)
return self.bare == other.bare
@property
def is_domain(self) -> bool:
return self.localpart is None and self.resource is None
@property
def is_full(self) -> bool:
return (self.localpart is not None and
self.domain is not None and
self.resource is not None)
def new_with(self, **kwargs: dict[str, str]) -> JID:
new = asdict(self)
new.update(kwargs)
return JID(**new)
def to_user_string(self, show_punycode: bool = True) -> str:
domain = self.domain_to_ascii()
if domain.startswith('xn--') and show_punycode:
domain_encoded = f' ({domain})'
else:
domain_encoded = ''
if self.localpart is None:
return f'{self}{domain_encoded}'
localpart = unescape_localpart(self.localpart)
if self.resource is None:
return f'{localpart}@{self.domain}{domain_encoded}'
return f'{localpart}@{self.domain}/{self.resource}{domain_encoded}'
def to_iri(self,
query: Optional[str | tuple[str, list[tuple[str, str]]]] = None,
fragment: Optional[str] = None
) -> str:
if self.localpart:
inode = escape_inode(self.localpart)
ipathxmpp = f'{inode}@{self.domain}'
else:
ipathxmpp = f'{self.domain}'
if self.resource is not None:
ires = escape_ires(self.resource)
ipathxmpp = f'{ipathxmpp}/{ires}'
iri = f'xmpp:{ipathxmpp}'
if query is not None:
if isinstance(query, str):
querytype = query
queryparams = None
else:
querytype, queryparams = query
iquerytype = validate_querytype(querytype)
iri += f'?{iquerytype}'
if queryparams is not None:
for ikey, ivalue in queryparams:
ivalue = escape_ivalue(ivalue)
ikey = validate_ikey(ikey)
iri += f';{ikey}={ivalue}'
if fragment is not None:
ifragment = escape_ifragment(fragment)
iri += f'#{ifragment}'
return iri
def copy(self) -> JID:
deprecation_warning('copy() is not needed, JID is immutable')
return self
class StreamErrorNode(Node):
def __init__(self, node):
Node.__init__(self, node=node)
self._text: dict[Optional[str], str] = {}
text_elements = self.getTags('text', namespace=Namespace.XMPP_STREAMS)
for element in text_elements:
lang = element.getXmlLang()
text = element.getData()
self._text[lang] = text
def get_condition(self) -> Optional[str]:
for tag in self.getChildren():
if (tag.getName() != 'text' and
tag.getNamespace() == Namespace.XMPP_STREAMS):
return tag.getName()
return None
def get_text(self, pref_lang: Optional[str] = None) -> str:
if pref_lang is not None:
text = self._text.get(pref_lang)
if text is not None:
return text
if self._text:
text = self._text.get('en')
if text is not None:
return text
text = self._text.get(None)
if text is not None:
return text
return self._text.popitem()[1]
return ''
class Protocol(Node):
"""
A "stanza" object class. Contains methods that are common for presences, iqs
and messages
"""
def __init__(self,
name=None,
to=None,
typ=None,
frm=None,
attrs=None,
payload=None,
timestamp=None,
xmlns=None,
node=None):
"""
Constructor, name is the name of the stanza
i.e. 'message' or 'presence'or 'iq'
to is the value of 'to' attribure, 'typ' - 'type' attribute
frn - from attribure, attrs - other attributes mapping,
payload - same meaning as for simplexml payload definition
timestamp - the time value that needs to be stamped over stanza
xmlns - namespace of top stanza node
node - parsed or unparsed stana to be taken as prototype.
"""
if not attrs:
attrs = {}
if to:
attrs['to'] = to
if frm:
attrs['from'] = frm
if typ:
attrs['type'] = typ
Node.__init__(self, tag=name, attrs=attrs, payload=payload, node=node)
if not node and xmlns:
self.setNamespace(xmlns)
if self['to']:
self.setTo(self['to'])
if self['from']:
self.setFrom(self['from'])
if (node and
isinstance(node, Protocol) and
self.__class__ == node.__class__
and 'id' in self.attrs):
del self.attrs['id']
self.timestamp = None
for d in self.getTags('delay', namespace=Namespace.DELAY2):
try:
if d.getAttr('stamp') < self.getTimestamp2():
self.setTimestamp(d.getAttr('stamp'))
except Exception:
pass
if not self.timestamp:
for x in self.getTags('x', namespace=Namespace.DELAY):
try:
if x.getAttr('stamp') < self.getTimestamp():
self.setTimestamp(x.getAttr('stamp'))
except Exception:
pass
if timestamp is not None:
self.setTimestamp(timestamp)
def isError(self):
return self.getAttr('type') == 'error'
def isResult(self):
return self.getAttr('type') == 'result'
def getTo(self):
"""
Return value of the 'to' attribute
"""
try:
return self['to']
except Exception:
pass
return None
def getFrom(self):
"""
Return value of the 'from' attribute
"""
try:
return self['from']
except Exception:
pass
return None
def getTimestamp(self):
"""
Return the timestamp in the 'yyyymmddThhmmss' format
"""
if self.timestamp:
return self.timestamp
return time.strftime('%Y%m%dT%H:%M:%S', time.gmtime())
def getTimestamp2(self):
"""
Return the timestamp in the 'yyyymmddThhmmss' format
"""
if self.timestamp:
return self.timestamp
return time.strftime('%Y-%m-%dT%H:%M:%SZ', time.gmtime())
def getJid(self):
"""
Return the value of the 'jid' attribute
"""
attr = self.getAttr('jid')
if attr:
return JID.from_string(attr)
return attr
def getID(self) -> Optional[str]:
"""
Return the value of the 'id' attribute
"""
return self.getAttr('id')
def setTo(self, val: Union[str, JID]):
"""
Set the value of the 'to' attribute
"""
if not isinstance(val, JID):
val = JID.from_string(val)
self.setAttr('to', val)
def getType(self) -> Optional[str]:
"""
Return the value of the 'type' attribute
"""
return self.getAttr('type')
def setFrom(self, val: Union[str, JID]):
"""
Set the value of the 'from' attribute
"""
if not isinstance(val, JID):
val = JID.from_string(val)
self.setAttr('from', val)
def setType(self, val: str):
"""
Set the value of the 'type' attribute
"""
self.setAttr('type', val)
def setID(self, val: str):
"""
Set the value of the 'id' attribute
"""
self.setAttr('id', val)
def getError(self) -> Optional[str]:
"""
Return the error-condition (if present) or the textual description
of the error (otherwise)
"""
errtag = self.getTag('error')
if errtag is None:
return None
for tag in errtag.getChildren():
if (tag.getName() != 'text' and
tag.getNamespace() == Namespace.STANZAS):
return tag.getName()
return None
def getAppError(self):
errtag = self.getTag('error')
if errtag is None:
return None
for tag in errtag.getChildren():
if (tag.getName() != 'text' and
tag.getNamespace() != Namespace.STANZAS):
return tag.getName()
return None
def getAppErrorNamespace(self):
errtag = self.getTag('error')
if errtag is None:
return None
for tag in errtag.getChildren():
if (tag.getName() != 'text' and
tag.getNamespace() != Namespace.STANZAS):
return tag.getNamespace()
return None
def getErrorMsg(self):
"""
Return the textual description of the error (if present)
or the error condition
"""
errtag = self.getTag('error')
if errtag:
for tag in errtag.getChildren():
if tag.getName() == 'text':
return tag.getData()
return self.getError()
return None
def getErrorCode(self):
"""
Return the error code. Obsolete.
"""
return self.getTagAttr('error', 'code')
def getErrorType(self):
"""
Return the error code. Obsolete.
"""
return self.getTagAttr('error', 'type')
def getStatusConditions(self, as_code=False):
"""
Return the status conditions list as defined in XEP-0306.
"""
result = set()
status_tags = self.getTags('status')
for status in status_tags:
if as_code:
code = status.getAttr('code')
if code is not None:
result.add(code)
else:
for condition in status.getChildren():
result.add(condition.getName())
return list(result)
def setError(self, error, code=None):
"""
Set the error code. Obsolete. Use error-conditions instead
"""
if code:
if str(code) in _errorcodes.keys():
error = ErrorNode(_errorcodes[str(code)], text=error)
else:
error = ErrorNode(ERR_UNDEFINED_CONDITION, code=code,
typ='cancel', text=error)
elif isinstance(error, str):
error = ErrorNode(error)
self.setType('error')
self.addChild(node=error)
def setTimestamp(self, val=None):
"""
Set the timestamp. timestamp should be the yyyymmddThhmmss string
"""
if not val:
val = time.strftime('%Y%m%dT%H:%M:%S', time.gmtime())
self.timestamp=val
self.setTag('x', {'stamp': self.timestamp}, namespace=Namespace.DELAY)
def getProperties(self):
"""
Return the list of namespaces to which belongs the
direct childs of element
"""
props = []
for child in self.getChildren():
prop = child.getNamespace()
if prop not in props:
props.append(prop)
return props
def getTag(self,
name: str,
attrs: Optional[dict[str, Any]] = None,
namespace: Optional[str] = None,
protocol: bool = False) -> Optional[Node]:
"""
Return the Node instance for the tag.
If protocol is True convert to a new Protocol/Message instance.
"""
tag = Node.getTag(self, name, attrs, namespace)
if protocol and tag:
if name == 'message':
return Message(node=tag)
return Protocol(node=tag)
return tag
def __setitem__(self, item: str, val: Union[str, JID]):
"""
Set the item 'item' to the value 'val'
"""
if item in ['to', 'from']:
if not isinstance(val, JID):
val = JID.from_string(val)
self.setAttr(item, val)
class Message(Protocol):
"""
XMPP Message stanza - "push" mechanism
"""
def __init__(self,
to=None,
body=None,
xhtml=None,
typ=None,
subject=None,
attrs=None,
frm=None,
payload=None,
timestamp=None,
xmlns=Namespace.CLIENT,
node=None):
"""
You can specify recipient, text of message, type of message any
additional attributes, sender of the message, any additional payload
(f.e. jabber:x:delay element) and namespace in one go.
Alternatively you can pass in the other XML object as the 'node'
parameted to replicate it as message
"""
Protocol.__init__(self,
'message',
to=to,
typ=typ,
attrs=attrs,
frm=frm,
payload=payload,
timestamp=timestamp,
xmlns=xmlns,
node=node)
if body:
self.setBody(body)
if xhtml is not None:
self.setXHTML(xhtml)
if subject is not None:
self.setSubject(subject)
def getBody(self):
"""
Return text of the message
"""
return self.getTagData('body')
def getXHTML(self):
return self.getTag('html', namespace=Namespace.XHTML_IM)
def getSubject(self):
"""
Return subject of the message
"""
return self.getTagData('subject')
def getThread(self):
"""
Return thread of the message
"""
return self.getTagData('thread')
def getOriginID(self):
"""
Return origin-id of the message
"""
return self.getTagAttr('origin-id', namespace=Namespace.SID, attr='id')
def getStanzaIDAttrs(self):
"""
Return the stanza-id attributes of the message
"""
try:
attrs = self.getTag('stanza-id', namespace=Namespace.SID).getAttrs()
except Exception:
return None, None
return attrs['id'], attrs['by']
def setBody(self, val):
"""
Set the text of the message"""
self.setTagData('body', val)
def setXHTML(self, body, add=False):
if isinstance(body, str):
body = Node(node=body)
if add:
xhtml = self.getTag('html', namespace=Namespace.XHTML_IM)
if xhtml is not None:
xhtml.addChild(node=body)
else:
self.addChild('html',
namespace=Namespace.XHTML_IM,
payload=body)
else:
xhtml_nodes = self.getTags('html', namespace=Namespace.XHTML_IM)
for xhtml in xhtml_nodes:
self.delChild(xhtml)
self.addChild('html', namespace=Namespace.XHTML_IM, payload=body)
def setSubject(self, val):
"""
Set the subject of the message
"""
self.setTagData('subject', val)
def setThread(self, val):
"""
Set the thread of the message
"""
self.setTagData('thread', val)
def setOriginID(self, val):
"""
Sets the origin-id of the message
"""
self.setTag('origin-id', namespace=Namespace.SID, attrs={'id': val})
def buildReply(self, text=None):
"""
Builds and returns another message object with specified text. The to,
from, thread and type properties of new message are pre-set as reply to
this message
"""
m = Message(to=self.getFrom(),
frm=self.getTo(),
body=text,
typ=self.getType())
th = self.getThread()
if th:
m.setThread(th)
return m
def getStatusCode(self):
"""
Return the status code of the message (for groupchat config change)
"""
attrs = []
for xtag in self.getTags('x'):
for child in xtag.getTags('status'):
attrs.append(child.getAttr('code'))
return attrs
def setMarker(self, type_, id_):
self.setTag(type_, namespace=Namespace.CHATMARKERS, attrs={'id': id_})
def setMarkable(self):
self.setTag('markable', namespace=Namespace.CHATMARKERS)
def setReceiptRequest(self):
self.setTag('request', namespace=Namespace.RECEIPTS)
def setReceiptReceived(self, id_):
self.setTag('received', namespace=Namespace.RECEIPTS, attrs={'id': id_})
def setReply(self,
recipient_jid: str,
reply_to_id: str,
fallback_start: int,
fallback_end: int
) -> None:
self.setTag(
'reply',
namespace=Namespace.REPLY,
attrs={
'id': reply_to_id,
'to': recipient_jid})
fallback_tag = self.setTag(
'fallback',
namespace=Namespace.FALLBACK,
attrs={'for': Namespace.REPLY})
fallback_tag.addChild(
'body',
attrs={
'start': str(fallback_start),
'end': str(fallback_end)})
def setOOB(self, url, desc=None):
oob = self.setTag('x', namespace=Namespace.X_OOB)
oob.setTagData('url', url)
if desc is not None:
oob.setTagData('desc', desc)
def setCorrection(self, id_):
self.setTag('replace', namespace=Namespace.CORRECT, attrs={'id': id_})
def setAttention(self):
self.setTag('attention', namespace=Namespace.ATTENTION)
def setHint(self, hint):
self.setTag(hint, namespace=Namespace.HINTS)
def setReactions(self, target_id: str, emojis: Iterable[str]):
reactions = self.addChild(
'reactions', namespace=Namespace.REACTIONS, attrs={"id": target_id})
for e in emojis:
reactions.addChild(
'reaction', namespace=Namespace.REACTIONS, payload=[e])
def getReactions(self) -> Optional[tuple[str, set[str]]]:
reactions = self.getTag('reactions', namespace=Namespace.REACTIONS)
if not reactions:
return None
react_to = reactions.getAttr('id')
if not react_to:
return None
tags = reactions.getTags('reaction', namespace=Namespace.REACTIONS)
# strip() in case clients surround emojis with whitespace
return react_to, {t.getData().strip() for t in tags}
class Presence(Protocol):
def __init__(self,
to=None,
typ=None,
priority=None,
show=None,
status=None,
attrs=None,
frm=None,
timestamp=None,
payload=None,
xmlns=Namespace.CLIENT,
node=None):
"""
You can specify recipient, type of message, priority, show and status
values any additional attributes, sender of the presence, timestamp, any
additional payload (f.e. jabber:x:delay element) and namespace in one
go. Alternatively you can pass in the other XML object as the 'node'
parameted to replicate it as presence
"""
Protocol.__init__(self,
'presence',
to=to,
typ=typ,
attrs=attrs,
frm=frm,
payload=payload,
timestamp=timestamp,
xmlns=xmlns,
node=node)
if priority:
self.setPriority(priority)
if show:
self.setShow(show)
if status:
self.setStatus(status)
def getPriority(self):
"""
Return the priority of the message
"""
return self.getTagData('priority')
def getShow(self):
"""
Return the show value of the message
"""
return self.getTagData('show')
def getStatus(self):
"""
Return the status string of the message
"""
return self.getTagData('status') or ''
def setPriority(self, val):
"""
Set the priority of the message
"""
self.setTagData('priority', val)
def setShow(self, val):
"""
Set the show value of the message
"""
if val not in ['away', 'chat', 'dnd', 'xa']:
raise ValueError('Invalid show value: %s' % val)
self.setTagData('show', val)
def setStatus(self, val):
"""
Set the status string of the message
"""
self.setTagData('status', val)
def _muc_getItemAttr(self, tag, attr):
for xtag in self.getTags('x'):
if xtag.getNamespace() not in (Namespace.MUC_USER,
Namespace.MUC_ADMIN):
continue
for child in xtag.getTags(tag):
return child.getAttr(attr)
def _muc_getSubTagDataAttr(self, tag, attr):
for xtag in self.getTags('x'):
if xtag.getNamespace() not in (Namespace.MUC_USER,
Namespace.MUC_ADMIN):
continue
for child in xtag.getTags('item'):
for cchild in child.getTags(tag):
return cchild.getData(), cchild.getAttr(attr)
return None, None
def getRole(self):
"""
Return the presence role (for groupchat)
"""
return self._muc_getItemAttr('item', 'role')
def getAffiliation(self):
"""
Return the presence affiliation (for groupchat)
"""
return self._muc_getItemAttr('item', 'affiliation')
def getNewNick(self):
"""
Return the status code of the presence (for groupchat)
"""
return self._muc_getItemAttr('item', 'nick')
def getJid(self):
"""
Return the presence jid (for groupchat)
"""
return self._muc_getItemAttr('item', 'jid')
def getReason(self):
"""
Returns the reason of the presence (for groupchat)
"""
return self._muc_getSubTagDataAttr('reason', '')[0]
def getActor(self):
"""
Return the reason of the presence (for groupchat)
"""
return self._muc_getSubTagDataAttr('actor', 'jid')[1]
def getStatusCode(self):
"""
Return the status code of the presence (for groupchat)
"""
attrs = []
for xtag in self.getTags('x'):
for child in xtag.getTags('status'):
attrs.append(child.getAttr('code'))
return attrs
class Iq(Protocol):
"""
XMPP Iq object - get/set dialog mechanism
"""
def __init__(self,
typ: Optional[str] = None,
queryNS: Optional[str] = None,
attrs: Optional[dict[str, str]] = None,
to: Optional[Union[JID, str]] = None,
frm: Optional[Union[JID, str]] = None,
payload: Optional[list[Union[Node, str]]] = None,
xmlns: str = Namespace.CLIENT,
node: Optional[Node] = None):
"""
You can specify type, query namespace any additional attributes,
recipient of the iq, sender of the iq, any additional payload (f.e.
jabber:x:data node) and namespace in one go.
Alternatively you can pass in the other XML object as the 'node'
parameted to replicate it as an iq
"""
Protocol.__init__(self,
'iq',
to=to,
typ=typ,
attrs=attrs,
frm=frm,
xmlns=xmlns,
node=node)
if payload:
self.setQueryPayload(payload)
if queryNS:
self.setQueryNS(queryNS)
def getQuery(self) -> Optional[Node]:
"""
Return the IQ's child element if it exists, None otherwise.
"""
children = self.getChildren()
if children and self.getType() != 'error' and \
children[0].getName() != 'error':
return children[0]
return None
def getQueryNS(self) -> Optional[str]:
"""
Return the namespace of the 'query' child element
"""
tag = self.getQuery()
if tag:
return tag.getNamespace()
return None
def getQuerynode(self) -> Optional[str]:
"""
Return the 'node' attribute value of the 'query' child element
"""
tag = self.getQuery()
if tag:
return tag.getAttr('node')
return None
def getQueryChildren(self) -> Optional[list[Node]]:
"""
Return the 'query' child element child nodes
"""
tag = self.getQuery()
if tag:
return tag.getChildren()
return None
def getQueryChild(self, name: Optional[str] = None) -> Optional[Node]:
"""
Return the 'query' child element with name, or the first element
which is not an error element
"""
query = self.getQuery()
if not query:
return None
for node in query.getChildren():
if name is not None:
if node.getName() == name:
return node
else:
if node.getName() != 'error':
return node
return None
def setQuery(self, name: Optional[str] = None) -> Node:
"""
Change the name of the query node, creating it if needed. Keep the
existing name if none is given (use 'query' if it's a creation).
Return the query node.
"""
query = self.getQuery()
if query is None:
query = self.addChild('query')
if name is not None:
query.setName(name)
return query
def setQueryNS(self, namespace: str) -> None:
"""
Set the namespace of the 'query' child element
"""
self.setQuery().setNamespace(namespace)
def setQueryPayload(self, payload: list[Union[Node, str]]):
"""
Set the 'query' child element payload
"""
self.setQuery().setPayload(payload)
def setQuerynode(self, node: str) -> None:
"""
Set the 'node' attribute value of the 'query' child element
"""
self.setQuery().setAttr('node', node)
def buildReply(self, typ: str) -> Iq:
"""
Build and return another Iq object of specified type. The to, from and
query child node of new Iq are pre-set as reply to this Iq.
"""
iq = Iq(typ,
to=self.getFrom(),
frm=self.getTo(),
attrs={'id': self.getID()})
iq.setQuery(self.getQuery().getName()).setNamespace(self.getQueryNS())
return iq
def buildSimpleReply(self, typ: str) -> Iq:
return Iq(typ,
to=self.getFrom(),
attrs={'id': self.getID()})
class Hashes(Node):
"""
Hash elements for various XEPs as defined in XEP-300
RECOMENDED HASH USE:
Algorithm Support
MD2 MUST NOT
MD4 MUST NOT
MD5 MAY
SHA-1 MUST
SHA-256 MUST
SHA-512 SHOULD
"""
supported = ('md5', 'sha-1', 'sha-256', 'sha-512')
def __init__(self, nsp=Namespace.HASHES):
Node.__init__(self, None, {}, [], None, None, False, None)
self.setNamespace(nsp)
self.setName('hash')
def calculateHash(self, algo, file_string):
"""
Calculate the hash and add it. It is preferable doing it here
instead of doing it all over the place in Gajim.
"""
hl = None
hash_ = None
# file_string can be a string or a file
if isinstance(file_string, str):
if algo == 'sha-1':
hl = hashlib.sha1()
elif algo == 'md5':
hl = hashlib.md5()
elif algo == 'sha-256':
hl = hashlib.sha256()
elif algo == 'sha-512':
hl = hashlib.sha512()
if hl:
hl.update(file_string)
hash_ = hl.hexdigest()
else: # if it is a file
if algo == 'sha-1':
hl = hashlib.sha1()
elif algo == 'md5':
hl = hashlib.md5()
elif algo == 'sha-256':
hl = hashlib.sha256()
elif algo == 'sha-512':
hl = hashlib.sha512()
if hl:
for line in file_string:
hl.update(line)
hash_ = hl.hexdigest()
return hash_
def addHash(self, hash_, algo):
self.setAttr('algo', algo)
self.setData(hash_)
class Hashes2(Node):
"""
Hash elements for various XEPs as defined in XEP-300
RECOMENDED HASH USE:
Algorithm Support
MD2 MUST NOT
MD4 MUST NOT
MD5 MUST NOT
SHA-1 SHOULD NOT
SHA-256 MUST
SHA-512 SHOULD
SHA3-256 MUST
SHA3-512 SHOULD
BLAKE2b256 MUST
BLAKE2b512 SHOULD
"""
supported = ('sha-256', 'sha-512', 'sha3-256',
'sha3-512', 'blake2b-256', 'blake2b-512')
def __init__(self, nsp=Namespace.HASHES_2):
Node.__init__(self, None, {}, [], None, None, False, None)
self.setNamespace(nsp)
self.setName('hash')
def calculateHash(self, algo, file_string):
"""
Calculate the hash and add it. It is preferable doing it here
instead of doing it all over the place in Gajim.
"""
hl = None
hash_ = None
if algo == 'sha-256':
hl = hashlib.sha256()
elif algo == 'sha-512':
hl = hashlib.sha512()
elif algo == 'sha3-256':
hl = hashlib.sha3_256()
elif algo == 'sha3-512':
hl = hashlib.sha3_512()
elif algo == 'blake2b-256':
hl = hashlib.blake2b(digest_size=32)
elif algo == 'blake2b-512':
hl = hashlib.blake2b(digest_size=64)
# file_string can be a string or a file
if hl is not None:
if isinstance(file_string, bytes):
hl.update(file_string)
else: # if it is a file
for line in file_string:
hl.update(line)
hash_ = b64encode(hl.digest()).decode('ascii')
return hash_
def addHash(self, hash_, algo):
self.setAttr('algo', algo)
self.setData(hash_)
class BindRequest(Iq):
def __init__(self, resource: Optional[str]):
if resource is None:
res = resource
else:
res = Node('resource', payload=resource)
Iq.__init__(self, typ='set')
self.addChild(node=Node('bind',
{'xmlns': Namespace.BIND},
payload=res))
class TLSRequest(Node):
def __init__(self):
Node.__init__(self, tag='starttls', attrs={'xmlns': Namespace.TLS})
class SessionRequest(Iq):
def __init__(self):
Iq.__init__(self, typ='set')
self.addChild(node=Node('session', attrs={'xmlns': Namespace.SESSION}))
class StreamHeader(Node):
def __init__(self, domain: str, lang: Optional[str] = None):
if lang is None:
lang = 'en'
Node.__init__(self,
tag='stream:stream',
attrs={'xmlns': Namespace.CLIENT,
'version': '1.0',
'xmlns:stream': Namespace.STREAMS,
'to': domain,
'xml:lang': lang})
class WebsocketOpenHeader(Node):
def __init__(self, domain: str, lang: Optional[str] = None):
if lang is None:
lang = 'en'
Node.__init__(self,
tag='open',
attrs={'xmlns': Namespace.FRAMING,
'version': '1.0',
'to': domain,
'xml:lang': lang})
class WebsocketCloseHeader(Node):
def __init__(self):
Node.__init__(self, tag='close', attrs={'xmlns': Namespace.FRAMING})
class Features(Node):
def __init__(self, node: Node):
Node.__init__(self, node=node)
def has_starttls(self):
tls = self.getTag('starttls', namespace=Namespace.TLS)
if tls is not None:
required = tls.getTag('required') is not None
return True, required
return False, False
def has_sasl(self):
return self.getTag('mechanisms', namespace=Namespace.SASL) is not None
def has_sasl_2(self):
return self.getTag('authentication', namespace=Namespace.SASL2) is not None
def get_mechs(self) -> set[str]:
mechanisms = self.getTag('authentication', namespace=Namespace.SASL2)
if mechanisms is None:
mechanisms = self.getTag('mechanisms', namespace=Namespace.SASL)
if mechanisms is None:
return set()
mechanisms = mechanisms.getTags('mechanism')
return set(mech.getData() for mech in mechanisms)
def get_domain_based_name(self):
hostname = self.getTag('hostname',
namespace=Namespace.DOMAIN_BASED_NAME)
if hostname is not None:
return hostname.getData()
return None
def has_bind(self):
return self.getTag('bind', namespace=Namespace.BIND) is not None
def session_required(self):
session = self.getTag('session', namespace=Namespace.SESSION)
if session is not None:
optional = session.getTag('optional') is not None
return not optional
return False
def has_sm(self):
return self.getTag('sm', namespace=Namespace.STREAM_MGMT) is not None
def has_roster_version(self):
return self.getTag('ver', namespace=Namespace.ROSTER_VER) is not None
def has_register(self):
return self.getTag(
'register', namespace=Namespace.REGISTER_FEATURE) is not None
def has_anonymous(self):
return 'ANONYMOUS' in self.get_mechs()
def get_channel_binding_type(self) -> Optional[Gio.TlsChannelBindingType]:
sasl_cb = self.getTag('sasl-channel-binding',
namespace=Namespace.CHANNEL_BINDING)
if sasl_cb is None:
return None
exporter = sasl_cb.getTag(
'channel-binding', attrs={'type': 'tls-exporter'})
if exporter is not None:
return Gio.TlsChannelBindingType.EXPORTER
server_end_point = sasl_cb.getTag(
'channel-binding', attrs={'type': 'tls-server-end-point'})
if server_end_point is not None:
return Gio.TlsChannelBindingType.SERVER_END_POINT
return None
class ErrorNode(Node):
"""
XMPP-style error element
In the case of stanza error should be attached to XMPP stanza.
In the case of stream-level errors should be used separately.
"""
def __init__(self, name, code=None, typ=None, text=None):
"""
Mandatory parameter: name - name of error condition.
Optional parameters: code, typ, text.
Used for backwards compartibility with older jabber protocol.
"""
if name in ERRORS:
cod, type_, txt = ERRORS[name]
ns = name.split()[0]
else:
cod, ns, type_, txt = '500', Namespace.STANZAS, 'cancel', ''
if typ:
type_ = typ
if code:
cod = code
if text:
txt = text
Node.__init__(self, 'error', {}, [Node(name)])
if type_:
self.setAttr('type', type_)
if not cod:
self.setName('stream:error')
if txt:
self.addChild(node=Node(ns + ' text', {}, [txt]))
if cod:
self.setAttr('code', cod)
class Error(Protocol):
"""
Used to quickly transform received stanza into error reply
"""
def __init__(self, node, error, reply=1):
"""
Create error reply basing on the received 'node' stanza and the 'error'
error condition
If the 'node' is not the received stanza but locally created ('to' and
'from' fields needs not swapping) specify the 'reply' argument as false.
"""
if node.getType() == 'error':
raise ValueError('Can’t create error reply from error')
if reply:
Protocol.__init__(self,
to=node.getFrom(),
node=node)
self.delAttr('from')
else:
Protocol.__init__(self, node=node)
self.setError(error)
class DataField(Node):
"""
This class is used in the DataForm class to describe the single data item
If you are working with jabber:x:data (XEP-0004, XEP-0068, XEP-0122) then
you will need to work with instances of this class.
"""
def __init__(self,
name=None,
value=None,
typ=None,
required=0,
desc=None,
options=None,
node=None):
"""
Create new data field of specified name,value and type
Also 'required','desc' and 'options' fields can be set. Alternatively
other XML object can be passed in as the 'node' parameted
to replicate it as a new datafiled.
"""
Node.__init__(self, 'field', node=node)
if name:
self.setVar(name)
if isinstance(value, (list, tuple)):
self.setValues(value)
elif value:
self.setValue(value)
if typ:
self.setType(typ)
elif not typ and not node:
self.setType('text-single')
if required:
self.setRequired(required)
if desc:
self.setDesc(desc)
if options:
self.setOptions(options)
def setRequired(self, req=1):
"""
Change the state of the 'required' flag
"""
if req:
self.setTag('required')
else:
try:
self.delChild('required')
except ValueError:
return
def isRequired(self):
"""
Return in this field a required one
"""
return self.getTag('required')
def setDesc(self, desc):
"""
Set the description of this field
"""
self.setTagData('desc', desc)
def getDesc(self):
"""
Return the description of this field
"""
return self.getTagData('desc')
def setValue(self, val):
"""
Set the value of this field
"""
self.setTagData('value', val)
def getValue(self):
return self.getTagData('value')
def setValues(self, lst):
"""
Set the values of this field as values-list. Replaces all previous filed
values! If you need to just add a value - use addValue method
"""
while self.getTag('value'):
self.delChild('value')
for val in lst:
self.addValue(val)
def addValue(self, val):
"""
Add one more value to this field. Used in 'get' iq's or such
"""
self.addChild('value', {}, [val])
def getValues(self):
"""
Return the list of values associated with this field
"""
ret = []
for tag in self.getTags('value'):
ret.append(tag.getData())
return ret
def getOptions(self):
"""
Return label-option pairs list associated with this field
"""
ret = []
for tag in self.getTags('option'):
ret.append([tag.getAttr('label'), tag.getTagData('value')])
return ret
def setOptions(self, lst):
"""
Set label-option pairs list associated with this field
"""
while self.getTag('option'):
self.delChild('option')
for opt in lst:
self.addOption(opt)
def addOption(self, opt):
"""
Add one more label-option pair to this field
"""
if isinstance(opt, list):
self.addChild('option',
{'label': opt[0]}).setTagData('value', opt[1])
else:
self.addChild('option').setTagData('value', opt)
def getType(self):
"""
Get type of this field
"""
return self.getAttr('type')
def setType(self, val):
"""
Set type of this field
"""
return self.setAttr('type', val)
def getVar(self):
"""
Get 'var' attribute value of this field
"""
return self.getAttr('var')
def setVar(self, val):
"""
Set 'var' attribute value of this field
"""
return self.setAttr('var', val)
class DataForm(Node):
"""
Used for manipulating dataforms in XMPP
Relevant XEPs: 0004, 0068, 0122. Can be used in disco, pub-sub and many
other applications.
"""
def __init__(self, typ=None, data=None, title=None, node=None):
"""
Create new dataform of type 'typ'. 'data' is the list of DataField
instances that this dataform contains, 'title' - the title string. You
can specify the 'node' argument as the other node to be used as base for
constructing this dataform
title and instructions is optional and SHOULD NOT contain newlines.
Several instructions MAY be present.
'typ' can be one of ('form' | 'submit' | 'cancel' | 'result' )
'typ' of reply iq can be ( 'result' | 'set' | 'set' | 'result' )
respectively.
'cancel' form can not contain any fields. All other forms contains
AT LEAST one field.
'title' MAY be included in forms of type "form" and "result"
"""
Node.__init__(self, 'x', node=node)
if node:
newkids = []
for n in self.getChildren():
if n.getName() == 'field':
newkids.append(DataField(node=n))
else:
newkids.append(n)
self.kids = newkids
if typ:
self.setType(typ)
self.setNamespace(Namespace.DATA)
if title:
self.setTitle(title)
if data is not None:
if isinstance(data, dict):
newdata = []
for name in data.keys():
newdata.append(DataField(name, data[name]))
data = newdata
for child in data:
if child.__class__.__name__ == 'DataField':
self.kids.append(child)
elif isinstance(child, Node):
self.kids.append(DataField(node=child))
else: # Must be a string
self.addInstructions(child)
def getType(self):
"""
Return the type of dataform
"""
return self.getAttr('type')
def setType(self, typ):
"""
Set the type of dataform
"""
self.setAttr('type', typ)
def getTitle(self):
"""
Return the title of dataform
"""
return self.getTagData('title')
def setTitle(self, text):
"""
Set the title of dataform
"""
self.setTagData('title', text)
def getInstructions(self):
"""
Return the instructions of dataform
"""
return self.getTagData('instructions')
def setInstructions(self, text):
"""
Set the instructions of dataform
"""
self.setTagData('instructions', text)
def addInstructions(self, text):
"""
Add one more instruction to the dataform
"""
self.addChild('instructions', {}, [text])
def getField(self, name):
"""
Return the datafield object with name 'name' (if exists)
"""
return self.getTag('field', attrs={'var': name})
def setField(self, name):
"""
Create if nessessary or get the existing datafield object with name
'name' and return it
"""
f = self.getField(name)
if f:
return f
return self.addChild(node=DataField(name))
def asDict(self):
"""
Represent dataform as simple dictionary mapping of datafield names to
their values
"""
ret = {}
for field in self.getTags('field'):
name = field.getAttr('var')
typ = field.getType()
if typ and typ.endswith('-multi'):
val = []
for i in field.getTags('value'):
val.append(i.getData())
else:
val = field.getTagData('value')
ret[name] = val
if self.getTag('instructions'):
ret['instructions'] = self.getInstructions()
return ret
def __getitem__(self, name):
"""
Simple dictionary interface for getting datafields values by their names
"""
item = self.getField(name)
if item:
return item.getValue()
raise IndexError('No such field')
def __setitem__(self, name, val):
"""
Simple dictionary interface for setting datafields values by their names
"""
return self.setField(name).setValue(val)