def forward(self, name, *args, **kw):
"""
Forward call to command named ``name`` over XML-RPC.
This method will encode and forward an XML-RPC request, and will then
decode and return the corresponding XML-RPC response.
:param command: The name of the command being forwarded.
:param args: Positional arguments to pass to remote command.
:param kw: Keyword arguments to pass to remote command.
"""
server = getattr(context, 'request_url', None)
self.log.info("Forwarding '%s' to %s server '%s'", name, self.protocol,
server)
command = getattr(self.conn, name)
params = [args, kw]
try:
return self._call_command(command, params)
except Fault as e:
e = decode_fault(e)
self.debug('Caught fault %d from server %s: %s', e.faultCode,
server, e.faultString)
if e.faultCode in errors_by_code:
error = errors_by_code[e.faultCode]
raise error(message=e.faultString)
raise UnknownError(
code=e.faultCode,
error=e.faultString,
server=server,
)
except SSLError as e:
raise NetworkError(uri=server, error=str(e))
except ProtocolError as e:
# By catching a 401 here we can detect the case where we have
# a single IPA server and the session is invalid. Otherwise
# we always have to do a ping().
session_cookie = getattr(context, 'session_cookie', None)
if session_cookie and e.errcode == 401:
# Unauthorized. Remove the session and try again.
delattr(context, 'session_cookie')
try:
principal = getattr(context, 'principal', None)
delete_persistent_client_session_data(principal)
except Exception as e:
# This shouldn't happen if we have a session but it isn't fatal.
pass
# Create a new serverproxy with the non-session URI
serverproxy = self.create_connection(
os.environ.get('KRB5CCNAME'), self.env.verbose,
self.env.fallback, self.env.delegate)
setattr(context, self.id,
Connection(serverproxy, self.disconnect))
return self.forward(name, *args, **kw)
raise NetworkError(uri=server, error=e.errmsg)
except socket.error as e:
raise NetworkError(uri=server, error=str(e))
except (OverflowError, TypeError) as e:
raise XMLRPCMarshallError(error=str(e))
if current_conn is not None:
dbdir = getattr(current_conn.conn._ServerProxy__transport,
'dbdir', None)
if dbdir is not None:
self.debug('Using dbdir %s' % dbdir)
setattr(context, self.id,
Connection(serverproxy, self.disconnect))
if dbdir is not None:
current_conn = getattr(context, self.id, None)
current_conn.conn._ServerProxy__transport.dbdir = dbdir
return self.forward(name, *args, **kw)
raise NetworkError(uri=server, error=e.errmsg)
except socket.error, e:
raise NetworkError(uri=server, error=str(e))
except (OverflowError, TypeError), e:
raise XMLRPCMarshallError(error=str(e))
class xmlclient(RPCClient):
session_path = '/ipa/session/xml'
server_proxy_class = ServerProxy
protocol = 'xml'
env_rpc_uri_key = 'xmlrpc_uri'
def _call_command(self, command, params):
version = params[1].get('version', VERSION_WITHOUT_CAPABILITIES)
params = xml_wrap(params, version)
result = command(*params)
return xml_unwrap(result)
