Merge branch 'master' into debian-jessie-backports

[git.ikiwiki.info.git] / plugins / proxy.py

diff --git a/plugins/proxy.py b/plugins/proxy.py
old mode 100644 (file)
new mode 100755 (executable)
index 477a365..b61eb46
--- a/plugins/proxy.py
+++ b/plugins/proxy.py
@@ -3,35 +3,87 @@
 #
 # proxy.py — helper for Python-based external (xml-rpc) ikiwiki plugins
 #
 #
 # proxy.py — helper for Python-based external (xml-rpc) ikiwiki plugins
 #

-# Copyright © martin f. krafft <madduck@madduck.net>
-# Released under the terms of the GNU GPL version 2
+# Copyright © 2008      martin f. krafft <madduck@madduck.net>
+#             2008-2011 Joey Hess <joey@kitenet.net>
+#             2012      W. Trevor King <wking@tremily.us>
+#
+#  Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+# 1. Redistributions of source code must retain the above copyright
+#    notice, this list of conditions and the following disclaimer.
+# 2. Redistributions in binary form must reproduce the above copyright
+#    notice, this list of conditions and the following disclaimer in the
+#    documentation and/or other materials provided with the distribution.
+# .
+# THIS SOFTWARE IS PROVIDED BY IKIWIKI AND CONTRIBUTORS ``AS IS''
+# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+# TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+# PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION
+# OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+# USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+# ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+# OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+# OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+# SUCH DAMAGE.

 #
 __name__ = 'proxy.py'
 __description__ = 'helper for Python-based external (xml-rpc) ikiwiki plugins'
 #
 __name__ = 'proxy.py'
 __description__ = 'helper for Python-based external (xml-rpc) ikiwiki plugins'

-__version__ = '0.1'
+__version__ = '0.2'

 __author__ = 'martin f. krafft <madduck@madduck.net>'
 __copyright__ = 'Copyright © ' + __author__
 __author__ = 'martin f. krafft <madduck@madduck.net>'
 __copyright__ = 'Copyright © ' + __author__

-__licence__ = 'GPLv2'
+__licence__ = 'BSD-2-clause'

 
 import sys
 import time
 
 import sys
 import time

-import xmlrpclib

 import xml.parsers.expat
 import xml.parsers.expat

-from SimpleXMLRPCServer import SimpleXMLRPCDispatcher
+try:  # Python 3
+    import xmlrpc.client as _xmlrpc_client
+except ImportError:  # Python 2
+    import xmlrpclib as _xmlrpc_client
+try:  # Python 3
+    import xmlrpc.server as _xmlrpc_server
+except ImportError:  # Python 2
+    import SimpleXMLRPCServer as _xmlrpc_server
+
+
+class ParseError (Exception):
+    pass
+
+
+class PipeliningDetected (Exception):
+    pass
+
+
+class GoingDown (Exception):
+    pass

 
 

-class _IkiWikiExtPluginXMLRPCDispatcher(SimpleXMLRPCDispatcher):
+
+class InvalidReturnValue (Exception):
+    pass
+
+
+class AlreadyImported (Exception):
+    pass
+
+
+class _IkiWikiExtPluginXMLRPCDispatcher(_xmlrpc_server.SimpleXMLRPCDispatcher):

 
     def __init__(self, allow_none=False, encoding=None):
         try:
 
     def __init__(self, allow_none=False, encoding=None):
         try:

-            SimpleXMLRPCDispatcher.__init__(self, allow_none, encoding)
+            _xmlrpc_server.SimpleXMLRPCDispatcher.__init__(
+                self, allow_none, encoding)

         except TypeError:
             # see http://bugs.debian.org/470645
             # python2.4 and before only took one argument
         except TypeError:
             # see http://bugs.debian.org/470645
             # python2.4 and before only took one argument

-            SimpleXMLRPCDispatcher.__init__(self)
+            _xmlrpc_server.SimpleXMLRPCDispatcher.__init__(self)

 
     def dispatch(self, method, params):
         return self._dispatch(method, params)
 
 
     def dispatch(self, method, params):
         return self._dispatch(method, params)
 

+

 class XMLStreamParser(object):
 
     def __init__(self):
 class XMLStreamParser(object):
 
     def __init__(self):


@@ -53,14 +105,15 @@ class XMLStreamParser(object):
     def _pop_tag(self, tag):
         top = self._stack.pop()
         if top != tag:
     def _pop_tag(self, tag):
         top = self._stack.pop()
         if top != tag:

-            raise ParseError, 'expected %s closing tag, got %s' % (top, tag)
+            raise ParseError(
+                'expected {0} closing tag, got {1}'.format(top, tag))

 
     def _request_complete(self):
         return self._first_tag_received and len(self._stack) == 0
 
     def _check_pipelining(self, *args):
         if self._first_tag_received:
 
     def _request_complete(self):
         return self._first_tag_received and len(self._stack) == 0
 
     def _check_pipelining(self, *args):
         if self._first_tag_received:

-            raise PipeliningDetected, 'need a new line between XML documents'
+            raise PipeliningDetected('need a new line between XML documents')

 
     def parse(self, data):
         self._parser.Parse(data, False)
 
     def parse(self, data):
         self._parser.Parse(data, False)


@@ -70,11 +123,6 @@ class XMLStreamParser(object):
             self._reset()
             return ret
 
             self._reset()
             return ret
 

-    class ParseError(Exception):
-        pass
-
-    class PipeliningDetected(Exception):
-        pass

 
 class _IkiWikiExtPluginXMLRPCHandler(object):
 
 
 class _IkiWikiExtPluginXMLRPCHandler(object):
 


@@ -108,21 +156,35 @@ class _IkiWikiExtPluginXMLRPCHandler(object):
                 return ret
 
     def send_rpc(self, cmd, in_fd, out_fd, *args, **kwargs):
                 return ret
 
     def send_rpc(self, cmd, in_fd, out_fd, *args, **kwargs):

-        xml = xmlrpclib.dumps(sum(kwargs.iteritems(), args), cmd)
-        self._debug_fn("calling ikiwiki procedure `%s': [%s]" % (cmd, xml))
-        _IkiWikiExtPluginXMLRPCHandler._write(out_fd, xml)
+        xml = _xmlrpc_client.dumps(sum(kwargs.items(), args), cmd)
+        self._debug_fn(
+            "calling ikiwiki procedure `{0}': [{1}]".format(cmd, repr(xml)))
+        # ensure that encoded is a str (bytestring in Python 2, Unicode in 3)
+        if str is bytes and not isinstance(xml, str):
+            encoded = xml.encode('utf8')
+        else:
+            encoded = xml
+        _IkiWikiExtPluginXMLRPCHandler._write(out_fd, encoded)

 
         self._debug_fn('reading response from ikiwiki...')
 
 
         self._debug_fn('reading response from ikiwiki...')
 

-        xml = _IkiWikiExtPluginXMLRPCHandler._read(in_fd)
-        self._debug_fn('read response to procedure %s from ikiwiki: [%s]' % (cmd, xml))
+        response = _IkiWikiExtPluginXMLRPCHandler._read(in_fd)
+        if str is bytes and not isinstance(response, str):
+            xml = response.encode('utf8')
+        else:
+            xml = response
+        self._debug_fn(
+            'read response to procedure {0} from ikiwiki: [{1}]'.format(
+                cmd, repr(xml)))

         if xml is None:
             # ikiwiki is going down
             self._debug_fn('ikiwiki is going down, and so are we...')
         if xml is None:
             # ikiwiki is going down
             self._debug_fn('ikiwiki is going down, and so are we...')

-            raise _IkiWikiExtPluginXMLRPCHandler._GoingDown
+            raise GoingDown()

 
 

-        data = xmlrpclib.loads(xml)[0][0]
-        self._debug_fn('parsed data from response to procedure %s: [%s]' % (cmd, data))
+        data = _xmlrpc_client.loads(xml)[0][0]
+        self._debug_fn(
+            'parsed data from response to procedure {0}: [{1}]'.format(
+                cmd, repr(data)))

         return data
 
     def handle_rpc(self, in_fd, out_fd):
         return data
 
     def handle_rpc(self, in_fd, out_fd):


@@ -131,18 +193,18 @@ class _IkiWikiExtPluginXMLRPCHandler(object):
         if xml is None:
             # ikiwiki is going down
             self._debug_fn('ikiwiki is going down, and so are we...')
         if xml is None:
             # ikiwiki is going down
             self._debug_fn('ikiwiki is going down, and so are we...')

-            raise _IkiWikiExtPluginXMLRPCHandler._GoingDown
+            raise GoingDown()

 
 

-        self._debug_fn('received procedure call from ikiwiki: [%s]' % xml)
-        params, method = xmlrpclib.loads(xml)
+        self._debug_fn(
+            'received procedure call from ikiwiki: [{0}]'.format(xml))
+        params, method = _xmlrpc_client.loads(xml)

         ret = self._dispatcher.dispatch(method, params)
         ret = self._dispatcher.dispatch(method, params)

-        xml = xmlrpclib.dumps((ret,), methodresponse=True)
-        self._debug_fn('sending procedure response to ikiwiki: [%s]' % xml)
+        xml = _xmlrpc_client.dumps((ret,), methodresponse=True)
+        self._debug_fn(
+                'sending procedure response to ikiwiki: [{0}]'.format(xml))

         _IkiWikiExtPluginXMLRPCHandler._write(out_fd, xml)
         return ret
 
         _IkiWikiExtPluginXMLRPCHandler._write(out_fd, xml)
         return ret
 

-    class _GoingDown:
-        pass

 
 class IkiWikiProcedureProxy(object):
 
 
 class IkiWikiProcedureProxy(object):
 


@@ -175,7 +237,7 @@ class IkiWikiProcedureProxy(object):
                     yield i
 
         args = list(subst_none(args))
                     yield i
 
         args = list(subst_none(args))

-        kwargs = dict(zip(kwargs.keys(), list(subst_none(kwargs.itervalues()))))
+        kwargs = dict(zip(kwargs.keys(), list(subst_none(kwargs.values()))))

         ret = self._xmlrpc_handler.send_rpc(cmd, self._in_fd, self._out_fd,
                                             *args, **kwargs)
         if ret == IkiWikiProcedureProxy._IKIWIKI_NIL_SENTINEL:
         ret = self._xmlrpc_handler.send_rpc(cmd, self._in_fd, self._out_fd,
                                             *args, **kwargs)
         if ret == IkiWikiProcedureProxy._IKIWIKI_NIL_SENTINEL:


@@ -184,7 +246,7 @@ class IkiWikiProcedureProxy(object):
 
     def hook(self, type, function, name=None, id=None, last=False):
         if self._imported:
 
     def hook(self, type, function, name=None, id=None, last=False):
         if self._imported:

-            raise IkiWikiProcedureProxy.AlreadyImported
+            raise AlreadyImported()

 
         if name is None:
             name = function.__name__
 
         if name is None:
             name = function.__name__


@@ -196,11 +258,12 @@ class IkiWikiProcedureProxy(object):
 #            curpage = args[0]
 #            kwargs = dict([args[i:i+2] for i in xrange(1, len(args), 2)])
             ret = function(self, *args)
 #            curpage = args[0]
 #            kwargs = dict([args[i:i+2] for i in xrange(1, len(args), 2)])
             ret = function(self, *args)

-            self._debug_fn("%s hook `%s' returned: [%s]" % (type, name, ret))
+            self._debug_fn(
+                    "{0} hook `{1}' returned: [{2}]".format(type, name, repr(ret)))

             if ret == IkiWikiProcedureProxy._IKIWIKI_NIL_SENTINEL:
             if ret == IkiWikiProcedureProxy._IKIWIKI_NIL_SENTINEL:

-                raise IkiWikiProcedureProxy.InvalidReturnValue, \
-                        'hook functions are not allowed to return %s' \
-                        % IkiWikiProcedureProxy._IKIWIKI_NIL_SENTINEL
+                raise InvalidReturnValue(
+                    'hook functions are not allowed to return {0}'.format(
+                        IkiWikiProcedureProxy._IKIWIKI_NIL_SENTINEL))

             if ret is None:
                 ret = IkiWikiProcedureProxy._IKIWIKI_NIL_SENTINEL
             return ret
             if ret is None:
                 ret = IkiWikiProcedureProxy._IKIWIKI_NIL_SENTINEL
             return ret


@@ -210,7 +273,7 @@ class IkiWikiProcedureProxy(object):
 
     def inject(self, rname, function, name=None, memoize=True):
         if self._imported:
 
     def inject(self, rname, function, name=None, memoize=True):
         if self._imported:

-            raise IkiWikiProcedureProxy.AlreadyImported
+            raise AlreadyImported()

 
         if name is None:
             name = function.__name__
 
         if name is None:
             name = function.__name__


@@ -242,7 +305,7 @@ class IkiWikiProcedureProxy(object):
     def error(self, msg):
         try:
             self.rpc('error', msg)
     def error(self, msg):
         try:
             self.rpc('error', msg)

-        except IOError, e:
+        except IOError as e:

             if e.errno != 32:
                 raise
         import posix
             if e.errno != 32:
                 raise
         import posix


@@ -251,30 +314,26 @@ class IkiWikiProcedureProxy(object):
     def run(self):
         try:
             while True:
     def run(self):
         try:
             while True:

-                ret = self._xmlrpc_handler.handle_rpc(self._in_fd, self._out_fd)
+                ret = self._xmlrpc_handler.handle_rpc(
+                    self._in_fd, self._out_fd)

                 time.sleep(IkiWikiProcedureProxy._LOOP_DELAY)
                 time.sleep(IkiWikiProcedureProxy._LOOP_DELAY)

-        except _IkiWikiExtPluginXMLRPCHandler._GoingDown:
+        except GoingDown:

             return
 
             return
 

-        except Exception, e:
+        except Exception as e:

             import traceback
             import traceback

-            self.error('uncaught exception: %s\n%s' \
-                       % (e, traceback.format_exc(sys.exc_info()[2])))
+            tb = traceback.format_exc()
+            self.error('uncaught exception: {0}\n{1}'.format(e, tb))

             return
 
     def _importme(self):
         self._debug_fn('importing...')
         for id, type, function, last in self._hooks:
             return
 
     def _importme(self):
         self._debug_fn('importing...')
         for id, type, function, last in self._hooks:

-            self._debug_fn('hooking %s/%s into %s chain...' % (id, function, type))
+            self._debug_fn('hooking {0}/{1} into {2} chain...'.format(
+                    id, function, type))

             self.rpc('hook', id=id, type=type, call=function, last=last)
         for rname, function, memoize in self._functions:
             self.rpc('hook', id=id, type=type, call=function, last=last)
         for rname, function, memoize in self._functions:

-            self._debug_fn('injecting %s as %s...' % (function, rname))
+            self._debug_fn('injecting {0} as {1}...'.format(function, rname))

             self.rpc('inject', name=rname, call=function, memoize=memoize)
         self._imported = True
         return IkiWikiProcedureProxy._IKIWIKI_NIL_SENTINEL
             self.rpc('inject', name=rname, call=function, memoize=memoize)
         self._imported = True
         return IkiWikiProcedureProxy._IKIWIKI_NIL_SENTINEL

-
-    class InvalidReturnValue(Exception):
-        pass
-
-    class AlreadyImported(Exception):
-        pass