543 lines
18 KiB
Python
543 lines
18 KiB
Python
# Copyright (C) 2006-2007 Red Hat, Inc.
|
|
#
|
|
# This library is free software; you can redistribute it and/or
|
|
# modify it under the terms of the GNU Lesser General Public
|
|
# License as published by the Free Software Foundation; either
|
|
# version 2 of the License, or (at your option) any later version.
|
|
#
|
|
# This library 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
|
|
# Lesser General Public License for more details.
|
|
#
|
|
# You should have received a copy of the GNU Lesser General Public
|
|
# License along with this library; if not, write to the
|
|
# Free Software Foundation, Inc., 59 Temple Place - Suite 330,
|
|
# Boston, MA 02111-1307, USA.
|
|
|
|
# pylint: disable-msg = W0221
|
|
|
|
import socket
|
|
import os
|
|
import threading
|
|
import traceback
|
|
import xmlrpclib
|
|
import sys
|
|
import httplib
|
|
import urllib
|
|
import fcntl
|
|
|
|
import gobject
|
|
import SimpleXMLRPCServer
|
|
import SimpleHTTPServer
|
|
import SocketServer
|
|
|
|
|
|
__authinfos = {}
|
|
|
|
def _add_authinfo(authinfo):
|
|
__authinfos[threading.currentThread()] = authinfo
|
|
|
|
def get_authinfo():
|
|
return __authinfos.get(threading.currentThread())
|
|
|
|
def _del_authinfo():
|
|
del __authinfos[threading.currentThread()]
|
|
|
|
|
|
class GlibTCPServer(SocketServer.TCPServer):
|
|
"""GlibTCPServer
|
|
|
|
Integrate socket accept into glib mainloop.
|
|
"""
|
|
|
|
allow_reuse_address = True
|
|
request_queue_size = 20
|
|
|
|
def __init__(self, server_address, RequestHandlerClass):
|
|
SocketServer.TCPServer.__init__(self, server_address, RequestHandlerClass)
|
|
self.socket.setblocking(0) # Set nonblocking
|
|
|
|
# Watch the listener socket for data
|
|
gobject.io_add_watch(self.socket, gobject.IO_IN, self._handle_accept)
|
|
|
|
def _handle_accept(self, source, condition):
|
|
"""Process incoming data on the server's socket by doing an accept()
|
|
via handle_request()."""
|
|
if not (condition & gobject.IO_IN):
|
|
return True
|
|
self.handle_request()
|
|
return True
|
|
|
|
def close_request(self, request):
|
|
"""Called to clean up an individual request."""
|
|
# let the request be closed by the request handler when its done
|
|
pass
|
|
|
|
|
|
class ChunkedGlibHTTPRequestHandler(SimpleHTTPServer.SimpleHTTPRequestHandler):
|
|
"""RequestHandler class that integrates with Glib mainloop. It writes
|
|
the specified file to the client in chunks, returning control to the
|
|
mainloop between chunks.
|
|
"""
|
|
|
|
CHUNK_SIZE = 4096
|
|
|
|
def __init__(self, request, client_address, server):
|
|
self._file = None
|
|
self._srcid = 0
|
|
SimpleHTTPServer.SimpleHTTPRequestHandler.__init__(self, request, client_address, server)
|
|
|
|
def log_request(self, code='-', size='-'):
|
|
pass
|
|
|
|
def do_GET(self):
|
|
"""Serve a GET request."""
|
|
self._file = self.send_head()
|
|
if self._file:
|
|
self._srcid = gobject.io_add_watch(self.wfile, gobject.IO_OUT | gobject.IO_ERR, self._send_next_chunk)
|
|
else:
|
|
self._file.close()
|
|
self._cleanup()
|
|
|
|
def _send_next_chunk(self, source, condition):
|
|
if condition & gobject.IO_ERR:
|
|
self._cleanup()
|
|
return False
|
|
if not (condition & gobject.IO_OUT):
|
|
self._cleanup()
|
|
return False
|
|
data = self._file.read(self.CHUNK_SIZE)
|
|
count = os.write(self.wfile.fileno(), data)
|
|
if count != len(data) or len(data) != self.CHUNK_SIZE:
|
|
self._cleanup()
|
|
return False
|
|
return True
|
|
|
|
def _cleanup(self):
|
|
if self._file:
|
|
self._file.close()
|
|
self._file = None
|
|
if self._srcid > 0:
|
|
gobject.source_remove(self._srcid)
|
|
self._srcid = 0
|
|
if not self.wfile.closed:
|
|
self.wfile.flush()
|
|
self.wfile.close()
|
|
self.rfile.close()
|
|
|
|
def finish(self):
|
|
"""Close the sockets when we're done, not before"""
|
|
pass
|
|
|
|
def send_head(self):
|
|
"""Common code for GET and HEAD commands.
|
|
|
|
This sends the response code and MIME headers.
|
|
|
|
Return value is either a file object (which has to be copied
|
|
to the outputfile by the caller unless the command was HEAD,
|
|
and must be closed by the caller under all circumstances), or
|
|
None, in which case the caller has nothing further to do.
|
|
|
|
** [dcbw] modified to send Content-disposition filename too
|
|
"""
|
|
path = self.translate_path(self.path)
|
|
f = None
|
|
if os.path.isdir(path):
|
|
for index in "index.html", "index.htm":
|
|
index = os.path.join(path, index)
|
|
if os.path.exists(index):
|
|
path = index
|
|
break
|
|
else:
|
|
return self.list_directory(path)
|
|
ctype = self.guess_type(path)
|
|
try:
|
|
# Always read in binary mode. Opening files in text mode may cause
|
|
# newline translations, making the actual size of the content
|
|
# transmitted *less* than the content-length!
|
|
f = open(path, 'rb')
|
|
except IOError:
|
|
self.send_error(404, "File not found")
|
|
return None
|
|
self.send_response(200)
|
|
self.send_header("Content-type", ctype)
|
|
self.send_header("Content-Length", str(os.fstat(f.fileno())[6]))
|
|
self.send_header("Content-Disposition", 'attachment; filename="%s"' % os.path.basename(path))
|
|
self.end_headers()
|
|
return f
|
|
|
|
class GlibURLDownloader(gobject.GObject):
|
|
"""Grabs a URL in chunks, returning to the mainloop after each chunk"""
|
|
|
|
__gsignals__ = {
|
|
'finished': (gobject.SIGNAL_RUN_FIRST, gobject.TYPE_NONE,
|
|
([gobject.TYPE_PYOBJECT, gobject.TYPE_PYOBJECT])),
|
|
'error': (gobject.SIGNAL_RUN_FIRST, gobject.TYPE_NONE,
|
|
([gobject.TYPE_PYOBJECT]))
|
|
}
|
|
|
|
CHUNK_SIZE = 4096
|
|
|
|
def __init__(self, url, destdir=None):
|
|
self._url = url
|
|
if not destdir:
|
|
destdir = "/tmp"
|
|
self._destdir = destdir
|
|
self._srcid = 0
|
|
self._fname = None
|
|
self._outf = None
|
|
gobject.GObject.__init__(self)
|
|
|
|
def start(self):
|
|
self._info = urllib.urlopen(self._url)
|
|
self._suggested_fname = self._get_filename_from_headers(self._info.headers)
|
|
import tempfile
|
|
garbage, path = urllib.splittype(self._url)
|
|
garbage, path = urllib.splithost(path or "")
|
|
path, garbage = urllib.splitquery(path or "")
|
|
path, garbage = urllib.splitattr(path or "")
|
|
suffix = os.path.splitext(path)[1]
|
|
(self._outf, self._fname) = tempfile.mkstemp(suffix=suffix, dir=self._destdir)
|
|
|
|
fcntl.fcntl(self._info.fp.fileno(), fcntl.F_SETFD, os.O_NDELAY)
|
|
self._srcid = gobject.io_add_watch(self._info.fp.fileno(),
|
|
gobject.IO_IN | gobject.IO_ERR,
|
|
self._read_next_chunk)
|
|
|
|
def _get_filename_from_headers(self, headers):
|
|
if not headers.has_key("Content-Disposition"):
|
|
return None
|
|
|
|
ftag = "filename="
|
|
data = headers["Content-Disposition"]
|
|
fidx = data.find(ftag)
|
|
if fidx < 0:
|
|
return None
|
|
fname = data[fidx+len(ftag):]
|
|
if fname[0] == '"' or fname[0] == "'":
|
|
fname = fname[1:]
|
|
if fname[len(fname)-1] == '"' or fname[len(fname)-1] == "'":
|
|
fname = fname[:len(fname)-1]
|
|
return fname
|
|
|
|
def _read_next_chunk(self, source, condition):
|
|
if condition & gobject.IO_ERR:
|
|
self.cleanup()
|
|
os.remove(self._fname)
|
|
self.emit("error", "Error downloading file.")
|
|
return False
|
|
elif not (condition & gobject.IO_IN):
|
|
# shouldn't get here, but...
|
|
return True
|
|
|
|
try:
|
|
data = self._info.fp.read(self.CHUNK_SIZE)
|
|
count = os.write(self._outf, data)
|
|
if len(data) < self.CHUNK_SIZE:
|
|
self.cleanup()
|
|
self.emit("finished", self._fname, self._suggested_fname)
|
|
return False
|
|
if count < len(data):
|
|
self.cleanup()
|
|
self.emit("error", "Error writing to download file.")
|
|
return False
|
|
except Exception, err:
|
|
self.cleanup()
|
|
self.emit("error", "Error downloading file: %s" % err)
|
|
return False
|
|
return True
|
|
|
|
def cleanup(self):
|
|
if self._srcid > 0:
|
|
gobject.source_remove(self._srcid)
|
|
self._srcid = 0
|
|
del self._info
|
|
self._info = None
|
|
os.close(self._outf)
|
|
self._outf = None
|
|
|
|
|
|
class GlibXMLRPCRequestHandler(SimpleXMLRPCServer.SimpleXMLRPCRequestHandler):
|
|
""" GlibXMLRPCRequestHandler
|
|
|
|
The stock SimpleXMLRPCRequestHandler and server don't allow any way to pass
|
|
the client's address and/or SSL certificate into the function that actually
|
|
_processes_ the request. So we have to store it in a thread-indexed dict.
|
|
"""
|
|
|
|
def do_POST(self):
|
|
_add_authinfo(self.client_address)
|
|
try:
|
|
SimpleXMLRPCServer.SimpleXMLRPCRequestHandler.do_POST(self)
|
|
except socket.timeout:
|
|
pass
|
|
except socket.error, e:
|
|
print "Error (%s): socket error - '%s'" % (self.client_address, e)
|
|
except:
|
|
print "Error while processing POST:"
|
|
traceback.print_exc()
|
|
_del_authinfo()
|
|
|
|
class GlibXMLRPCServer(GlibTCPServer, SimpleXMLRPCServer.SimpleXMLRPCDispatcher):
|
|
"""GlibXMLRPCServer
|
|
|
|
Use nonblocking sockets and handle the accept via glib rather than
|
|
blocking on accept().
|
|
"""
|
|
|
|
def __init__(self, addr, requestHandler=GlibXMLRPCRequestHandler,
|
|
logRequests=0, allow_none=False):
|
|
self.logRequests = logRequests
|
|
if sys.version_info[:3] >= (2, 5, 0):
|
|
SimpleXMLRPCServer.SimpleXMLRPCDispatcher.__init__(self, allow_none, encoding="utf-8")
|
|
else:
|
|
SimpleXMLRPCServer.SimpleXMLRPCDispatcher.__init__(self)
|
|
GlibTCPServer.__init__(self, addr, requestHandler)
|
|
|
|
def _marshaled_dispatch(self, data, dispatch_method = None):
|
|
"""Dispatches an XML-RPC method from marshalled (XML) data.
|
|
|
|
XML-RPC methods are dispatched from the marshalled (XML) data
|
|
using the _dispatch method and the result is returned as
|
|
marshalled data. For backwards compatibility, a dispatch
|
|
function can be provided as an argument (see comment in
|
|
SimpleXMLRPCRequestHandler.do_POST) but overriding the
|
|
existing method through subclassing is the prefered means
|
|
of changing method dispatch behavior.
|
|
"""
|
|
|
|
params, method = xmlrpclib.loads(data)
|
|
|
|
# generate response
|
|
try:
|
|
if dispatch_method is not None:
|
|
response = dispatch_method(method, params)
|
|
else:
|
|
response = self._dispatch(method, params)
|
|
# wrap response in a singleton tuple
|
|
response = (response,)
|
|
response = xmlrpclib.dumps(response, methodresponse=1)
|
|
except xmlrpclib.Fault, fault:
|
|
response = xmlrpclib.dumps(fault)
|
|
except:
|
|
print "Exception while processing request:"
|
|
traceback.print_exc()
|
|
|
|
# report exception back to server
|
|
response = xmlrpclib.dumps(
|
|
xmlrpclib.Fault(1, "%s:%s" % (sys.exc_type, sys.exc_value))
|
|
)
|
|
|
|
return response
|
|
|
|
|
|
class GlibHTTP(httplib.HTTP):
|
|
"""Subclass HTTP so we can return it's connection class' socket."""
|
|
def connect(self, host=None, port=None):
|
|
httplib.HTTP.connect(self, host, port)
|
|
self._conn.sock.setblocking(0)
|
|
|
|
class GlibXMLRPCTransport(xmlrpclib.Transport):
|
|
"""Integrate the request with the glib mainloop rather than blocking."""
|
|
##
|
|
# Connect to server.
|
|
#
|
|
# @param host Target host.
|
|
# @return A connection handle.
|
|
|
|
def __init__(self, use_datetime=0):
|
|
if sys.version_info[:3] >= (2, 5, 0):
|
|
xmlrpclib.Transport.__init__(self, use_datetime)
|
|
|
|
def make_connection(self, host):
|
|
"""Use our own connection object so we can get its socket."""
|
|
# create a HTTP connection object from a host descriptor
|
|
host, extra_headers, x509 = self.get_host_info(host)
|
|
return GlibHTTP(host)
|
|
|
|
##
|
|
# Send a complete request, and parse the response.
|
|
#
|
|
# @param host Target host.
|
|
# @param handler Target PRC handler.
|
|
# @param request_body XML-RPC request body.
|
|
# @param verbose Debugging flag.
|
|
# @return Parsed response.
|
|
|
|
def start_request(self, host, handler, request_body, verbose=0, reply_handler=None, error_handler=None, user_data=None):
|
|
"""Do the first half of the request by sending data to the remote
|
|
server. The bottom half bits get run when the remote server's response
|
|
actually comes back."""
|
|
# issue XML-RPC request
|
|
|
|
h = self.make_connection(host)
|
|
if verbose:
|
|
h.set_debuglevel(1)
|
|
|
|
self.send_request(h, handler, request_body)
|
|
self.send_host(h, host)
|
|
self.send_user_agent(h)
|
|
self.send_content(h, request_body)
|
|
|
|
# Schedule a GIOWatch so we don't block waiting for the response
|
|
gobject.io_add_watch(h._conn.sock, gobject.IO_IN, self._finish_request,
|
|
h, host, handler, verbose, reply_handler, error_handler, user_data)
|
|
|
|
def _finish_request(self, source, condition, h, host, handler, verbose, reply_handler=None, error_handler=None, user_data=None):
|
|
"""Parse and return response when the remote server actually returns it."""
|
|
if not (condition & gobject.IO_IN):
|
|
return True
|
|
|
|
try:
|
|
errcode, errmsg, headers = h.getreply()
|
|
except socket.error, err:
|
|
if err[0] != 104:
|
|
raise socket.error(err)
|
|
else:
|
|
if error_handler:
|
|
gobject.idle_add(error_handler, err, user_data)
|
|
return False
|
|
|
|
if errcode != 200:
|
|
raise xmlrpclib.ProtocolError(host + handler, errcode, errmsg, headers)
|
|
self.verbose = verbose
|
|
response = self._parse_response(h.getfile(), h._conn.sock)
|
|
if reply_handler:
|
|
# Coerce to a list so we can append user data
|
|
response = response[0]
|
|
if not isinstance(response, list):
|
|
response = [response]
|
|
response.append(user_data)
|
|
gobject.idle_add(reply_handler, *response)
|
|
return False
|
|
|
|
class _Method:
|
|
"""Right, so python people thought it would be funny to make this
|
|
class private to xmlrpclib.py..."""
|
|
# some magic to bind an XML-RPC method to an RPC server.
|
|
# supports "nested" methods (e.g. examples.getStateName)
|
|
def __init__(self, send, name):
|
|
self.__send = send
|
|
self.__name = name
|
|
def __getattr__(self, name):
|
|
return _Method(self.__send, "%s.%s" % (self.__name, name))
|
|
def __call__(self, *args, **kwargs):
|
|
return self.__send(self.__name, *args, **kwargs)
|
|
|
|
|
|
class GlibServerProxy(xmlrpclib.ServerProxy):
|
|
"""Subclass xmlrpclib.ServerProxy so we can run the XML-RPC request
|
|
in two parts, integrated with the glib mainloop, such that we don't
|
|
block anywhere.
|
|
|
|
Using this object is somewhat special; it requires more arguments to each
|
|
XML-RPC request call than the normal xmlrpclib.ServerProxy object:
|
|
|
|
client = GlibServerProxy("http://127.0.0.1:8888")
|
|
user_data = "bar"
|
|
xmlrpc_arg1 = "test"
|
|
xmlrpc_arg2 = "foo"
|
|
client.test(xmlrpc_test_cb, user_data, xmlrpc_arg1, xmlrpc_arg2)
|
|
|
|
Here, 'xmlrpc_test_cb' is the callback function, which has the following
|
|
signature:
|
|
|
|
def xmlrpc_test_cb(result_status, response, user_data=None):
|
|
...
|
|
"""
|
|
def __init__(self, uri, encoding=None, verbose=0, allow_none=0):
|
|
self._transport = GlibXMLRPCTransport()
|
|
self._encoding = encoding
|
|
self._verbose = verbose
|
|
self._allow_none = allow_none
|
|
xmlrpclib.ServerProxy.__init__(self, uri, self._transport, encoding, verbose, allow_none)
|
|
|
|
# get the url
|
|
import urllib
|
|
urltype, uri = urllib.splittype(uri)
|
|
if urltype not in ("http", "https"):
|
|
raise IOError, "unsupported XML-RPC protocol"
|
|
self._host, self._handler = urllib.splithost(uri)
|
|
if not self._handler:
|
|
self._handler = "/RPC2"
|
|
|
|
def __request(self, methodname, *args, **kwargs):
|
|
"""Call the method on the remote server. We just start the request here
|
|
and the transport itself takes care of scheduling the response callback
|
|
when the remote server returns the response. We don't want to block anywhere."""
|
|
|
|
request = xmlrpclib.dumps(args, methodname, encoding=self._encoding,
|
|
allow_none=self._allow_none)
|
|
|
|
reply_hdl = kwargs.get("reply_handler")
|
|
err_hdl = kwargs.get("error_handler")
|
|
udata = kwargs.get("user_data")
|
|
try:
|
|
response = self._transport.start_request(
|
|
self._host,
|
|
self._handler,
|
|
request,
|
|
verbose=self._verbose,
|
|
reply_handler=reply_hdl,
|
|
error_handler=err_hdl,
|
|
user_data=udata
|
|
)
|
|
except socket.error, exc:
|
|
if err_hdl:
|
|
gobject.idle_add(err_hdl, exc, udata)
|
|
|
|
def __getattr__(self, name):
|
|
# magic method dispatcher
|
|
return _Method(self.__request, name)
|
|
|
|
|
|
class Test(object):
|
|
def test(self, arg1, arg2):
|
|
print "Request got %s, %s" % (arg1, arg2)
|
|
return "success", "bork"
|
|
|
|
def xmlrpc_success_cb(response, resp2, loop):
|
|
print "Response was %s %s" % (response, resp2)
|
|
loop.quit()
|
|
|
|
def xmlrpc_error_cb(err, loop):
|
|
print "Error: %s" % err
|
|
loop.quit()
|
|
|
|
def xmlrpc_test(loop):
|
|
client = GlibServerProxy("http://127.0.0.1:8888")
|
|
client.test("bar", "baz",
|
|
reply_handler=xmlrpc_success_cb,
|
|
error_handler=xmlrpc_error_cb,
|
|
user_data=loop)
|
|
|
|
def start_xmlrpc():
|
|
server = GlibXMLRPCServer(("", 8888))
|
|
inst = Test()
|
|
server.register_instance(inst)
|
|
gobject.idle_add(xmlrpc_test, loop)
|
|
|
|
class TestReqHandler(ChunkedGlibHTTPRequestHandler):
|
|
def translate_path(self, path):
|
|
return "/tmp/foo"
|
|
|
|
def start_http():
|
|
server = GlibTCPServer(("", 8890), TestReqHandler)
|
|
|
|
def main():
|
|
loop = gobject.MainLoop()
|
|
# start_xmlrpc()
|
|
start_http()
|
|
try:
|
|
loop.run()
|
|
except KeyboardInterrupt:
|
|
print 'Ctrl+C pressed, exiting...'
|
|
print "Done."
|
|
|
|
if __name__ == "__main__":
|
|
main()
|
|
|
|
|