cryptonas-archive/v0.3.4.5/plugins/plugin_manager/plugin_manager.py

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#
# Copyright 2006 sense.lab e.V.
#
# This file is part of the CryptoBox.
#
# The CryptoBox is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# The CryptoBox 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 General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with the CryptoBox; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
#
__revision__ = "$Id"
import cryptobox.plugins.base
import cryptobox.plugins.manage
class plugin_manager(cryptobox.plugins.base.CryptoBoxPlugin):
plugin_capabilities = [ "system" ]
plugin_visibility = [ "preferences" ]
request_auth = True
rank = 90
def do_action(self, store=None, action=None, plugin_name=None, **args):
import re
if plugin_name:
## check for invalid characters
if re.search(r'\W', plugin_name): return "plugin_list"
plugin_manager = cryptobox.plugins.manage.PluginManager(
self.cbox, self.cbox.prefs["Locations"]["PluginDir"])
plugin = plugin_manager.get_plugin(plugin_name)
if not plugin: return "plugin_list"
## take only plugins, that are of the same type as the choosen one
self.plugins = [e for e in plugin_manager.get_plugins()
if e.plugin_capabilities == plugin.plugin_capabilities and \
e != "volume_props" ]
if action == "up":
self.__move_up(plugin)
elif action == "down":
self.__move_down(plugin)
return "plugin_list"
elif store:
for key in args.keys():
if key.endswith("_listed"):
if not re.search(r'\W',key):
self.__set_config(key[:-7], args)
else:
self.cbox.log.info("plugin_manager: invalid plugin name (%s)" % \
str(key[:-7]))
try:
self.cbox.prefs.plugin_conf.write()
self.cbox.log.info("Successfully stored plugin configuration")
except IOError, err_msg:
self.cbox.log.warn("Failed to write plugin configuration: %s" % err_msg)
return "plugin_list"
def get_status(self):
plugin_manager = cryptobox.plugins.manage.PluginManager(
self.cbox, self.cbox.prefs["Locations"]["PluginDir"])
return ":".join([e.get_name() for e in plugin_manager.get_plugins()])
def __sort_plugins(self):
"""sort all plugins in the list according to their rank"""
def cmp_func(x,y):
x_rank = x.get_rank()
y_rank = y.get_rank()
if x_rank < y_rank:
return -1
elif x_rank == y_rank:
return 0
else:
return 1
self.plugins.sort(cmp = cmp_func)
def __distribute_ranks(self):
"""evenly distribute the 'rank' values according to the current order of
the list"""
dist = 100 / (len(self.plugins) - 1)
for (index, pl) in enumerate(self.plugins):
pl.set_rank(dist*index)
try:
self.cbox.prefs.plugin_conf.write()
except IOError:
self.cbox.log.warn("failed to write plugin configuration")
def __move_up(self, plugin):
self.__sort_plugins()
try:
index = self.plugins.index(plugin)
## first elements may not move up
if index == 0:
return
except ValueError:
return
self.plugins.remove(plugin)
self.plugins.insert(index-1, plugin)
self.__distribute_ranks()
def __move_down(self, plugin):
self.__sort_plugins()
try:
index = self.plugins.index(plugin)
## last elements may not move down
if index == len(self.plugins) - 1:
return
except ValueError:
return
self.plugins.remove(plugin)
self.plugins.insert(index+1, plugin)
self.__distribute_ranks()
def __set_config(self, name, args):
import re
if not self.cbox.prefs.plugin_conf.has_key(name):
self.cbox.prefs.plugin_conf[name] = {}
setting = self.cbox.prefs.plugin_conf[name]
setting["visibility"] = []
## look for "_visible_" values and apply them
pattern = re.compile(r'%s_visible_([\w]+)$' % name)
for key in args.keys():
if key.startswith(name + "_visible_"):
(vis_type, ) = pattern.match(key).groups()
if vis_type:
setting["visibility"].append(vis_type)
## the plugin_manager _must_ always be visible
if (self.get_name() == name) and (not setting["visibility"]):
## reset to default
setting["visibility"] = self.plugin_visibility[:]
if args.has_key("%s_auth" % name):
setting["requestAuth"] = True
else:
setting["requestAuth"] = False