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von raredesign | Dez 3, 2019 | Allgemein | 0 Kommentare
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| Current Path : /usr/local/lib/python2.7/dist-packages/supervisor-3.2.3-py2.7.egg/supervisor/ |
| Current File : //usr/local/lib/python2.7/dist-packages/supervisor-3.2.3-py2.7.egg/supervisor/xmlrpc.py |
import types
import socket
import xmlrpclib
import httplib
import urllib
import re
from cStringIO import StringIO
import traceback
import sys
import base64
from supervisor.medusa.http_server import get_header
from supervisor.medusa.xmlrpc_handler import xmlrpc_handler
from supervisor.medusa import producers
from supervisor.http import NOT_DONE_YET
class Faults:
UNKNOWN_METHOD = 1
INCORRECT_PARAMETERS = 2
BAD_ARGUMENTS = 3
SIGNATURE_UNSUPPORTED = 4
SHUTDOWN_STATE = 6
BAD_NAME = 10
BAD_SIGNAL = 11
NO_FILE = 20
NOT_EXECUTABLE = 21
FAILED = 30
ABNORMAL_TERMINATION = 40
SPAWN_ERROR = 50
ALREADY_STARTED = 60
NOT_RUNNING = 70
SUCCESS = 80
ALREADY_ADDED = 90
STILL_RUNNING = 91
CANT_REREAD = 92
def getFaultDescription(code):
for faultname in Faults.__dict__:
if getattr(Faults, faultname) == code:
return faultname
return 'UNKNOWN'
class RPCError(Exception):
def __init__(self, code, extra=None):
self.code = code
self.text = getFaultDescription(code)
if extra is not None:
self.text = '%s: %s' % (self.text, extra)
def __str__(self):
return 'code=%r, text=%r' % (self.code, self.text)
class DeferredXMLRPCResponse:
""" A medusa producer that implements a deferred callback; requires
a subclass of asynchat.async_chat that handles NOT_DONE_YET sentinel """
CONNECTION = re.compile ('Connection: (.*)', re.IGNORECASE)
def __init__(self, request, callback):
self.callback = callback
self.request = request
self.finished = False
self.delay = float(callback.delay)
def more(self):
if self.finished:
return ''
try:
try:
value = self.callback()
if value is NOT_DONE_YET:
return NOT_DONE_YET
except RPCError, err:
value = xmlrpclib.Fault(err.code, err.text)
body = xmlrpc_marshal(value)
self.finished = True
return self.getresponse(body)
except:
tb = traceback.format_exc()
self.request.channel.server.logger.log(
"XML-RPC response callback error", tb
)
self.finished = True
self.request.error(500)
def getresponse(self, body):
self.request['Content-Type'] = 'text/xml'
self.request['Content-Length'] = len(body)
self.request.push(body)
connection = get_header(self.CONNECTION, self.request.header)
close_it = 0
wrap_in_chunking = 0
if self.request.version == '1.0':
if connection == 'keep-alive':
if not self.request.has_key ('Content-Length'):
close_it = 1
else:
self.request['Connection'] = 'Keep-Alive'
else:
close_it = 1
elif self.request.version == '1.1':
if connection == 'close':
close_it = 1
elif not self.request.has_key ('Content-Length'):
if self.request.has_key ('Transfer-Encoding'):
if not self.request['Transfer-Encoding'] == 'chunked':
close_it = 1
elif self.request.use_chunked:
self.request['Transfer-Encoding'] = 'chunked'
wrap_in_chunking = 1
else:
close_it = 1
elif self.request.version is None:
close_it = 1
outgoing_header = producers.simple_producer (
self.request.build_reply_header())
if close_it:
self.request['Connection'] = 'close'
if wrap_in_chunking:
outgoing_producer = producers.chunked_producer (
producers.composite_producer (self.request.outgoing)
)
# prepend the header
outgoing_producer = producers.composite_producer(
[outgoing_header, outgoing_producer]
)
else:
# prepend the header
self.request.outgoing.insert(0, outgoing_header)
outgoing_producer = producers.composite_producer (
self.request.outgoing)
# apply a few final transformations to the output
self.request.channel.push_with_producer (
# globbing gives us large packets
producers.globbing_producer (
# hooking lets us log the number of bytes sent
producers.hooked_producer (
outgoing_producer,
self.request.log
)
)
)
self.request.channel.current_request = None
if close_it:
self.request.channel.close_when_done()
def xmlrpc_marshal(value):
ismethodresponse = not isinstance(value, xmlrpclib.Fault)
if ismethodresponse:
if not isinstance(value, tuple):
value = (value,)
body = xmlrpclib.dumps(value, methodresponse=ismethodresponse)
else:
body = xmlrpclib.dumps(value)
return body
class SystemNamespaceRPCInterface:
def __init__(self, namespaces):
self.namespaces = {}
for name, inst in namespaces:
self.namespaces[name] = inst
self.namespaces['system'] = self
def _listMethods(self):
methods = {}
for ns_name in self.namespaces:
namespace = self.namespaces[ns_name]
for method_name in namespace.__class__.__dict__:
# introspect; any methods that don't start with underscore
# are published
func = getattr(namespace, method_name)
meth = getattr(func, 'im_func', None)
if meth is not None:
if not method_name.startswith('_'):
sig = '%s.%s' % (ns_name, method_name)
methods[sig] = str(func.__doc__)
return methods
def listMethods(self):
""" Return an array listing the available method names
@return array result An array of method names available (strings).
"""
methods = self._listMethods()
keys = methods.keys()
keys.sort()
return keys
def methodHelp(self, name):
""" Return a string showing the method's documentation
@param string name The name of the method.
@return string result The documentation for the method name.
"""
methods = self._listMethods()
for methodname in methods.keys():
if methodname == name:
return methods[methodname]
raise RPCError(Faults.SIGNATURE_UNSUPPORTED)
def methodSignature(self, name):
""" Return an array describing the method signature in the
form [rtype, ptype, ptype...] where rtype is the return data type
of the method, and ptypes are the parameter data types that the
method accepts in method argument order.
@param string name The name of the method.
@return array result The result.
"""
methods = self._listMethods()
for method in methods:
if method == name:
rtype = None
ptypes = []
parsed = gettags(methods[method])
for thing in parsed:
if thing[1] == 'return': # tag name
rtype = thing[2] # datatype
elif thing[1] == 'param': # tag name
ptypes.append(thing[2]) # datatype
if rtype is None:
raise RPCError(Faults.SIGNATURE_UNSUPPORTED)
return [rtype] + ptypes
raise RPCError(Faults.SIGNATURE_UNSUPPORTED)
def multicall(self, calls):
"""Process an array of calls, and return an array of
results. Calls should be structs of the form {'methodName':
string, 'params': array}. Each result will either be a
single-item array containing the result value, or a struct of
the form {'faultCode': int, 'faultString': string}. This is
useful when you need to make lots of small calls without lots
of round trips.
@param array calls An array of call requests
@return array result An array of results
"""
remaining_calls = calls[:] # [{'methodName':x, 'params':x}, ...]
callbacks = [] # always empty or 1 callback function only
results = [] # results of completed calls
# args are only to fool scoping and are never passed by caller
def multi(remaining_calls=remaining_calls,
callbacks=callbacks,
results=results):
# if waiting on a callback, call it, then remove it if it's done
if callbacks:
try:
value = callbacks[0]()
except RPCError, exc:
value = {'faultCode': exc.code,
'faultString': exc.text}
except:
info = sys.exc_info()
errmsg = "%s:%s" % (info[0], info[1])
value = {'faultCode': Faults.FAILED,
'faultString': 'FAILED: ' + errmsg}
if value is not NOT_DONE_YET:
callbacks.pop(0)
results.append(value)
# if we don't have a callback now, pop calls and call them in
# order until one returns a callback.
while (not callbacks) and remaining_calls:
call = remaining_calls.pop(0)
name = call.get('methodName', None)
params = call.get('params', [])
try:
if name is None:
raise RPCError(Faults.INCORRECT_PARAMETERS,
'No methodName')
if name == 'system.multicall':
raise RPCError(Faults.INCORRECT_PARAMETERS,
'Recursive system.multicall forbidden')
# make the call, may return a callback or not
root = AttrDict(self.namespaces)
value = traverse(root, name, params)
except RPCError, exc:
value = {'faultCode': exc.code,
'faultString': exc.text}
except:
info = sys.exc_info()
errmsg = "%s:%s" % (info[0], info[1])
value = {'faultCode': Faults.FAILED,
'faultString': 'FAILED: ' + errmsg}
if isinstance(value, types.FunctionType):
callbacks.append(value)
else:
results.append(value)
# we are done when there's no callback and no more calls queued
if callbacks or remaining_calls:
return NOT_DONE_YET
else:
return results
multi.delay = 0.05
# optimization: multi() is called here instead of just returning
# multi in case all calls complete and we can return with no delay.
value = multi()
if value is NOT_DONE_YET:
return multi
else:
return value
class AttrDict(dict):
# hack to make a dict's getattr equivalent to its getitem
def __getattr__(self, name):
return self.get(name)
class RootRPCInterface:
def __init__(self, subinterfaces):
for name, rpcinterface in subinterfaces:
setattr(self, name, rpcinterface)
def capped_int(value):
i = int(value)
if i < xmlrpclib.MININT:
i = xmlrpclib.MININT
elif i > xmlrpclib.MAXINT:
i = xmlrpclib.MAXINT
return i
def make_datetime(text):
return datetime.datetime(
*time.strptime(text, "%Y%m%dT%H:%M:%S")[:6]
)
class supervisor_xmlrpc_handler(xmlrpc_handler):
path = '/RPC2'
IDENT = 'Supervisor XML-RPC Handler'
def __init__(self, supervisord, subinterfaces):
self.rpcinterface = RootRPCInterface(subinterfaces)
self.supervisord = supervisord
if loads:
self.loads = loads
else:
self.supervisord.options.logger.warn(
'cElementTree not installed, using slower XML parser for '
'XML-RPC'
)
self.loads = xmlrpclib.loads
def match(self, request):
return request.uri.startswith(self.path)
def continue_request(self, data, request):
logger = self.supervisord.options.logger
try:
try:
params, method = self.loads(data)
except:
logger.error(
'XML-RPC request data %r is invalid: unmarshallable' %
(data,)
)
request.error(400)
return
# no <methodName> in the request or name is an empty string
if not method:
logger.error(
'XML-RPC request data %r is invalid: no method name' %
(data,)
)
request.error(400)
return
# we allow xml-rpc clients that do not send empty <params>
# when there are no parameters for the method call
if params is None:
params = ()
try:
logger.trace('XML-RPC method called: %s()' % method)
value = self.call(method, params)
logger.trace('XML-RPC method %s() returned successfully' %
method)
except RPCError, err:
# turn RPCError reported by method into a Fault instance
value = xmlrpclib.Fault(err.code, err.text)
logger.trace('XML-RPC method %s() returned fault: [%d] %s' % (
method,
err.code, err.text))
if isinstance(value, types.FunctionType):
# returning a function from an RPC method implies that
# this needs to be a deferred response (it needs to block).
pushproducer = request.channel.push_with_producer
pushproducer(DeferredXMLRPCResponse(request, value))
else:
# if we get anything but a function, it implies that this
# response doesn't need to be deferred, we can service it
# right away.
body = xmlrpc_marshal(value)
request['Content-Type'] = 'text/xml'
request['Content-Length'] = len(body)
request.push(body)
request.done()
except:
tb = traceback.format_exc()
logger.critical(
"Handling XML-RPC request with data %r raised an unexpected "
"exception: %s" % (data, tb)
)
# internal error, report as HTTP server error
request.error(500)
def call(self, method, params):
return traverse(self.rpcinterface, method, params)
def traverse(ob, method, params):
path = method.split('.')
for name in path:
if name.startswith('_'):
# security (don't allow things that start with an underscore to
# be called remotely)
raise RPCError(Faults.UNKNOWN_METHOD)
ob = getattr(ob, name, None)
if ob is None:
raise RPCError(Faults.UNKNOWN_METHOD)
try:
return ob(*params)
except TypeError:
raise RPCError(Faults.INCORRECT_PARAMETERS)
class SupervisorTransport(xmlrpclib.Transport):
"""
Provides a Transport for xmlrpclib that uses
httplib.HTTPConnection in order to support persistent
connections. Also support basic auth and UNIX domain socket
servers.
"""
connection = None
_use_datetime = 0 # python 2.5 fwd compatibility
def __init__(self, username=None, password=None, serverurl=None):
self.username = username
self.password = password
self.verbose = False
self.serverurl = serverurl
if serverurl.startswith('http://'):
type, uri = urllib.splittype(serverurl)
host, path = urllib.splithost(uri)
host, port = urllib.splitport(host)
if port is None:
port = 80
else:
port = int(port)
def get_connection(host=host, port=port):
return httplib.HTTPConnection(host, port)
self._get_connection = get_connection
elif serverurl.startswith('unix://'):
def get_connection(serverurl=serverurl):
# we use 'localhost' here because domain names must be
# < 64 chars (or we'd use the serverurl filename)
conn = UnixStreamHTTPConnection('localhost')
conn.socketfile = serverurl[7:]
return conn
self._get_connection = get_connection
else:
raise ValueError('Unknown protocol for serverurl %s' % serverurl)
def request(self, host, handler, request_body, verbose=0):
if not self.connection:
self.connection = self._get_connection()
self.headers = {
"User-Agent" : self.user_agent,
"Content-Type" : "text/xml",
"Accept": "text/xml"
}
# basic auth
if self.username is not None and self.password is not None:
unencoded = "%s:%s" % (self.username, self.password)
encoded = base64.encodestring(unencoded).replace('\n', '')
self.headers["Authorization"] = "Basic %s" % encoded
self.headers["Content-Length"] = str(len(request_body))
self.connection.request('POST', handler, request_body, self.headers)
r = self.connection.getresponse()
if r.status != 200:
self.connection.close()
self.connection = None
raise xmlrpclib.ProtocolError(host + handler,
r.status,
r.reason,
'' )
data = r.read()
p, u = self.getparser()
p.feed(data)
p.close()
return u.close()
class UnixStreamHTTPConnection(httplib.HTTPConnection):
def connect(self):
self.sock = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM)
# we abuse the host parameter as the socketname
self.sock.connect(self.socketfile)
def gettags(comment):
""" Parse documentation strings into JavaDoc-like tokens """
tags = []
tag = None
datatype = None
name = None
tag_lineno = lineno = 0
tag_text = []
for line in comment.split('\n'):
line = line.strip()
if line.startswith("@"):
tags.append((tag_lineno, tag, datatype, name, '\n'.join(tag_text)))
parts = line.split(None, 3)
if len(parts) == 1:
datatype = ''
name = ''
tag_text = []
elif len(parts) == 2:
datatype = parts[1]
name = ''
tag_text = []
elif len(parts) == 3:
datatype = parts[1]
name = parts[2]
tag_text = []
elif len(parts) == 4:
datatype = parts[1]
name = parts[2]
tag_text = [parts[3].lstrip()]
tag = parts[0][1:]
tag_lineno = lineno
else:
if line:
tag_text.append(line)
lineno = lineno + 1
tags.append((tag_lineno, tag, datatype, name, '\n'.join(tag_text)))
return tags
try:
# Python 2.6 contains a version of cElementTree inside it.
from xml.etree.ElementTree import iterparse
except ImportError:
try:
# Failing that, try cElementTree instead.
from cElementTree import iterparse
except ImportError:
iterparse = None
if iterparse is not None:
import datetime, time
from base64 import decodestring
unmarshallers = {
"int": lambda x: int(x.text),
"i4": lambda x: int(x.text),
"boolean": lambda x: x.text == "1",
"string": lambda x: x.text or "",
"double": lambda x: float(x.text),
"dateTime.iso8601": lambda x: make_datetime(x.text),
"array": lambda x: x[0].text,
"data": lambda x: [v.text for v in x],
"struct": lambda x: dict([(k.text or "", v.text) for k, v in x]),
"base64": lambda x: decodestring(x.text or ""),
"param": lambda x: x[0].text,
}
def loads(data):
params = method = None
for action, elem in iterparse(StringIO(data)):
unmarshal = unmarshallers.get(elem.tag)
if unmarshal:
data = unmarshal(elem)
elem.clear()
elem.text = data
elif elem.tag == "value":
try:
data = elem[0].text
except IndexError:
data = elem.text or ""
elem.clear()
elem.text = data
elif elem.tag == "methodName":
method = elem.text
elif elem.tag == "params":
params = tuple([v.text for v in elem])
return params, method
else:
loads = None
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