/usr/lib/python2.7/dist-packages/x2go/mimebox.py is in python-x2go 0.5.0.6-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 | # -*- coding: utf-8 -*-
# Copyright (C) 2010-2016 by Mike Gabriel <mike.gabriel@das-netzwerkteam.de>
#
# Python X2Go is free software; you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as published by
# the Free Software Foundation; either version 3 of the License, or
# (at your option) any later version.
#
# Python X2Go 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 Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with this program; if not, write to the
# Free Software Foundation, Inc.,
# 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA.
"""\
L{X2GoMIMEboxQueue} sets up a thread that listens for incoming files that
shall be opened locally on the client.
For each file that gets dropped in the MIME box an individual
thread is started (L{X2GoMIMEboxJob}) that handles the processing
of the incoming file.
"""
__NAME__ = 'x2gomimeboxqueue-pylib'
# modules
import os
import copy
import types
import threading
import gevent
# Python X2Go modules
import defaults
import utils
import log
import mimeboxactions
class X2GoMIMEboxQueue(threading.Thread):
"""\
If the X2Go MIME box is supported in a particaluar L{X2GoSession} instance
this class provides a sub-thread for handling incoming files in the MIME box
directory. The actual handling of a dropped file is handled by the classes
L{X2GoMIMEboxActionOPEN}, L{X2GoMIMEboxActionOPENWITH} and L{X2GoMIMEboxActionSAVEAS}.
"""
mimebox_action = None
mimebox = None
active_jobs = {}
mimebox_history = []
def __init__(self, profile_name='UNKNOWN', session_name='UNKNOWN',
mimebox_dir=None, mimebox_action=None, mimebox_extensions=[],
client_instance=None, logger=None, loglevel=log.loglevel_DEFAULT):
"""\
@param profile_name: name of the session profile this print queue belongs to
@type profile_name: C{str}
@param mimebox_dir: local directory for incoming MIME box files
@type mimebox_dir: C{str}
@param mimebox_action: name or instance of either of the possible X2Go print action classes
@type mimebox_action: C{str} or instance
@param client_instance: the underlying L{X2GoClient} instance
@type client_instance: C{obj}
@param logger: you can pass an L{X2GoLogger} object to the
L{X2GoPrintQueue} constructor
@type logger: C{obj}
@param loglevel: if no L{X2GoLogger} object has been supplied a new one will be
constructed with the given loglevel
@type loglevel: C{int}
"""
if logger is None:
self.logger = log.X2GoLogger(loglevel=loglevel)
else:
self.logger = copy.deepcopy(logger)
self.logger.tag = __NAME__
self.profile_name = profile_name
self.session_name = session_name
self.mimebox_dir = mimebox_dir
if self.mimebox_dir: self.mimebox_dir = os.path.normpath(self.mimebox_dir)
self.mimebox_extensions = mimebox_extensions
self.client_instance = client_instance
self.client_rootdir = client_instance.get_client_rootdir()
# this has to be set before we set the MIME box action...
self._accept_jobs = False
if mimebox_action is None:
mimebox_action = mimeboxactions.X2GoMIMEboxActionOPEN(client_instance=self.client_instance, logger=self.logger)
elif type(mimebox_action) in (types.StringType, types.UnicodeType):
mimebox_action = self.set_mimebox_action(mimebox_action, client_instance=self.client_instance, logger=self.logger)
else:
# hope it's already an instance...
self.mimebox_action = mimebox_action
threading.Thread.__init__(self)
self.daemon = True
self._accept_jobs = True
def __del__(self):
"""\
Class destructor.
"""
self.stop_thread()
def pause(self):
"""\
Prevent acceptance of new incoming files. The processing of MIME box jobs that
are currently still active will be completed, though.
"""
if self._accept_jobs == True:
self._accept_jobs = False
self.logger('paused thread: %s' % repr(self), loglevel=log.loglevel_DEBUG)
def resume(self):
"""\
Resume operation of the X2Go MIME box queue and continue accepting new incoming
files.
"""
if self._accept_jobs == False:
self._accept_jobs = True
self.logger('resumed thread: %s' % repr(self), loglevel=log.loglevel_DEBUG)
def stop_thread(self):
"""\
Stops this L{X2GoMIMEboxQueue} thread completely.
"""
self.pause()
self._keepalive = False
self.logger('stopping thread: %s' % repr(self), loglevel=log.loglevel_DEBUG)
@property
def _incoming_mimebox_jobs(self):
if os.path.exists(self.mimebox_dir):
l = os.listdir(self.mimebox_dir)
mimebox_jobs = []
for _ext in self.mimebox_extensions:
mimebox_jobs.extend([ dj for dj in l if dj.upper().endswith(_ext.upper()) ])
else:
mimebox_jobs = l
return [ dj for dj in mimebox_jobs if dj not in self.active_jobs.keys() ]
else:
return []
def set_mimebox_action(self, mimebox_action, **kwargs):
"""\
Modify the MIME box action of this L{X2GoMIMEboxQueue} thread during runtime. The
change of the MIME box action will be valid for the next incoming file in the MIME box
directory.
@param mimebox_action: the MIME box action to execute for incoming files
@type mimebox_action: C{str} or C{obj}
@param kwargs: extra options for the specified MIME box action
@type kwargs: C{dict}
"""
if mimebox_action in defaults.X2GO_MIMEBOX_ACTIONS.keys():
mimebox_action = defaults.X2GO_MIMEBOX_ACTIONS[mimebox_action]
if mimebox_action in defaults.X2GO_MIMEBOX_ACTIONS.values():
self.mimebox_action = eval ('mimeboxactions.%s(**kwargs)' % mimebox_action)
def run(self):
"""\
This method gets called once the L{X2GoMIMEboxQueue} thread is started by the C{X2GoMIMEboxQueue.start()} method.
"""
self.logger('starting MIME box queue thread: %s' % repr(self), loglevel=log.loglevel_DEBUG)
self._keepalive = True
while self._keepalive:
while self._accept_jobs:
if self._incoming_mimebox_jobs:
for _job in self._incoming_mimebox_jobs:
self.logger('processing incoming X2Go MIME box job: %s' % _job, loglevel=log.loglevel_NOTICE)
_new_mimeboxjob_thread = X2GoMIMEboxJob(target=x2go_mimeboxjob_handler,
kwargs={
'mimebox_file': _job,
'mimebox_extensions': self.mimebox_extensions,
'mimebox_action': self.mimebox_action,
'parent_thread': self,
'logger': self.logger,
}
)
self.active_jobs['%s' % _job] = _new_mimeboxjob_thread
_new_mimeboxjob_thread.start()
gevent.sleep(3)
gevent.sleep(1)
def x2go_mimeboxjob_handler(mimebox_file=None,
mimebox_extensions=[],
mimebox_action=None,
parent_thread=None, logger=None, ):
"""\
This function is called as a handler function for each incoming X2Go MIME box file
represented by the class L{X2GoMIMEboxJob}.
@param mimebox_file: MIME box file name as placed in to the X2Go MIME box spool directory
@type mimebox_file: C{str}
@param mimebox_action: an instance of either of the possible C{X2GoMIMEboxActionXXX} classes
@type mimebox_action: C{X2GoMIMEboxActionXXX} nstance
@param parent_thread: the L{X2GoMIMEboxQueue} thread that actually created this handler's L{X2GoMIMEboxJob} instance
@type parent_thread: C{obj}
@param logger: the L{X2GoMIMEboxQueue}'s logging instance
@type logger: C{obj}
"""
mimebox_action.profile_name = parent_thread.profile_name
mimebox_action.session_name = parent_thread.session_name
logger('action for printing is: %s' % mimebox_action, loglevel=log.loglevel_DEBUG)
_dotfile = mimebox_file.startswith('.')
_blacklisted = mimebox_file.upper().split('.')[-1] in defaults.X2GO_MIMEBOX_EXTENSIONS_BLACKLIST
_really_process = bool(not _blacklisted and ((not mimebox_extensions) or [ ext for ext in mimebox_extensions if mimebox_file.upper().endswith('%s' % ext.upper()) ]))
if _really_process and not _blacklisted and not _dotfile:
mimebox_action.do_process(mimebox_file=mimebox_file,
mimebox_dir=parent_thread.mimebox_dir,
)
elif not _blacklisted and not _dotfile:
logger('file extension of MIME box file %s is prohibited by session profile configuration' % mimebox_file, loglevel=log.loglevel_NOTICE)
elif _dotfile:
logger('placing files starting with a dot (.<file>) into the X2Go MIME box is prohibited, ignoring the file ,,%s\'\'' % mimebox_file, loglevel=log.loglevel_WARN)
else:
logger('file extension of MIME box file %s has been found in Python X2Go\' hardcoded MIME box extenstions blacklist' % mimebox_file, loglevel=log.loglevel_WARN)
logger('removing MIME box file %s' % mimebox_file, loglevel=log.loglevel_DEBUG)
utils.patiently_remove_file(parent_thread.mimebox_dir, mimebox_file)
logger('removed print job file %s' % mimebox_file, loglevel=log.loglevel_DEBUG)
del parent_thread.active_jobs['%s' % mimebox_file]
parent_thread.mimebox_history.append(mimebox_file)
# in case we do a lot of mimebox file exports we do not want to risk an
# endlessly growing mimebox job history
if len(parent_thread.mimebox_history) > 100:
parent_thread.mimebox_history = parent_thread.mimebox_history[-100:]
class X2GoMIMEboxJob(threading.Thread):
"""\
For each X2Go MIME box job we create a sub-thread that let's
the MIME box job be processed in the background.
As a handler for this class the function L{x2go_mimeboxjob_handler()}
is used.
"""
def __init__(self, **kwargs):
"""\
Construct the X2Go MIME box job thread...
All parameters (**kwargs) are passed through to the constructor
of C{threading.Thread()}.
"""
threading.Thread.__init__(self, **kwargs)
self.daemon = True
|