###
# Copyright (c) 2002-2005, Jeremiah Fincher
# Copyright (c) 2009, James McCoy
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are met:
#
# * Redistributions of source code must retain the above copyright notice,
# this list of conditions, and the following disclaimer.
# * 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.
# * Neither the name of the author of this software nor the name of
# contributors to this software may be used to endorse or promote products
# derived from this software without specific prior written consent.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 COPYRIGHT OWNER 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.
###
import os
import signal
import supybot.log as log
import supybot.conf as conf
import supybot.utils as utils
import supybot.world as world
import supybot.ircdb as ircdb
from supybot.commands import *
from supybot.utils.iter import all
import supybot.ircutils as ircutils
import supybot.registry as registry
import supybot.callbacks as callbacks
from supybot.i18n import PluginInternationalization, internationalizeDocstring
_ = PluginInternationalization('Config')
###
# Now, to setup the registry.
###
def getWrapper(name):
parts = registry.split(name)
if not parts or parts[0] not in ('supybot', 'users'):
raise registry.InvalidRegistryName(name)
group = getattr(conf, parts.pop(0))
while parts:
part = parts.pop(0)
if group.__hasattr__(part):
group = group.get(part)
else:
# We'll raise registry.InvalidRegistryName here so
# that we have a useful error message for the user.
raise registry.InvalidRegistryName(name)
return group
def getCapability(irc, name):
capability = 'owner' # Default to requiring the owner capability.
if not name.startswith('supybot') and not name.startswith('users'):
name = 'supybot.' + name
parts = registry.split(name)
group = getattr(conf, parts.pop(0))
while parts:
part = parts.pop(0)
group = group.get(part)
if not getattr(group, '_opSettable', True):
return 'owner'
if irc.isChannel(part):
# If a registry value has a channel in it, it requires a
# 'channel,op' capability, or so we assume. We'll see if we're
# proven wrong.
capability = ircdb.makeChannelCapability(part, 'op')
### Do more later, for specific capabilities/sections.
return capability
def isReadOnly(name):
"""Prevents changing certain config variables to gain shell access via
a vulnerable IRC network."""
parts = registry.split(name.lower())
if parts[0] != 'supybot':
parts.insert(0, 'supybot')
if parts == ['supybot', 'commands', 'allowshell'] and \
not conf.supybot.commands.allowShell():
# allow setting supybot.commands.allowShell from True to False,
# but not from False to True.
# Otherwise an IRC network could overwrite it.
return True
elif parts[0:2] == ['supybot', 'directories'] and \
not conf.supybot.commands.allowShell():
# Setting plugins directory allows for arbitrary code execution if
# an attacker can both use the IRC network to MITM and upload files
# on the server (eg. with a web CMS).
# Setting other directories allows writing data at arbitrary
# locations.
return True
else:
return False
def _reload():
ircdb.users.reload()
ircdb.ignores.reload()
ircdb.channels.reload()
registry.open_registry(world.registryFilename)
def _hupHandler(sig, frame):
log.info('Received SIGHUP, reloading configuration.')
_reload()
if os.name == 'posix':
signal.signal(signal.SIGHUP, _hupHandler)
def getConfigVar(irc, msg, args, state):
name = args[0]
if name.startswith('conf.'):
name = name[5:]
if not name.startswith('supybot') and not name.startswith('users'):
name = 'supybot.' + name
try:
group = getWrapper(name)
state.args.append(group)
del args[0]
except registry.InvalidRegistryName as e:
state.errorInvalid(_('configuration variable'), str(e))
addConverter('configVar', getConfigVar)
def getSettableConfigVar(irc, msg, args, state):
getConfigVar(irc, msg, args, state)
if not hasattr(state.args[-1], 'set'):
state.errorInvalid(_('settable configuration variable'),
state.args[-1]._name)
addConverter('settableConfigVar', getSettableConfigVar)
class Config(callbacks.Plugin):
"""Provides access to the Supybot configuration. This is
a core Supybot plugin that should not be removed!"""
def callCommand(self, command, irc, msg, *args, **kwargs):
try:
super(Config, self).callCommand(command, irc, msg, *args, **kwargs)
except registry.InvalidRegistryValue as e:
irc.error(str(e))
def _list(self, irc, group):
L = []
for (vname, v) in group._children.items():
if hasattr(group, '_channelValue') and group._channelValue and \
irc.isChannel(vname) and not v._children:
continue
if hasattr(v, '_channelValue') and v._channelValue:
vname = '#' + vname
if v._added and not all(irc.isChannel, v._added):
vname = '@' + vname
L.append(vname)
utils.sortBy(str.lower, L)
return L
@internationalizeDocstring
def list(self, irc, msg, args, group):
"""<group>
Returns the configuration variables available under the given
configuration <group>. If a variable has values under it, it is
preceded by an '@' sign. If a variable is a 'ChannelValue', that is,
it can be separately configured for each channel using the 'channel'
command in this plugin, it is preceded by an '#' sign.
"""
L = self._list(irc, group)
if L:
irc.reply(format('%L', L))
else:
irc.error(_('There don\'t seem to be any values in %s.') %
group._name)
list = wrap(list, ['configVar'])
@internationalizeDocstring
def search(self, irc, msg, args, word):
"""<word>
Searches for <word> in the current configuration variables.
"""
L = []
for (name, x) in conf.supybot.getValues(getChildren=True):
if word in name.lower():
possibleChannel = registry.split(name)[-1]
if not irc.isChannel(possibleChannel):
L.append(name)
if L:
irc.reply(format('%L', L))
else:
irc.reply(_('There were no matching configuration variables.'))
search = wrap(search, ['lowered']) # XXX compose with withoutSpaces?
def _getValue(self, irc, msg, group, network=None, channel=None, addGlobal=False):
global_group = group
global_value = str(group) or ' '
group = group.getSpecific(
network=network.network, channel=channel, check=False)
value = str(group) or ' '
if addGlobal and not irc.nested:
if global_group._channelValue and channel:
# TODO: also show the network value when relevant
value = _(
'Global: %(global_value)s; '
'%(channel_name)s @ %(network_name)s: %(channel_value)s') % {
'global_value': global_value,
'channel_name': msg.channel,
'network_name': irc.network,
'channel_value': value,
}
elif global_group._networkValue and network:
value = _(
'Global: %(global_value)s; '
'%(network_name)s: %(network_value)s') % {
'global_value': global_value,
'network_name': irc.network,
'network_value': value,
}
if hasattr(global_group, 'value'):
if not global_group._private:
return (value, None)
else:
capability = getCapability(irc, group._name)
if ircdb.checkCapability(msg.prefix, capability):
return (value, True)
else:
irc.errorNoCapability(capability, Raise=True)
else:
irc.error(_('That registry variable has no value. Use the list '
'command in this plugin to see what variables are '
'available in this group.'), Raise=True)
def _setValue(self, irc, msg, group, value):
if isReadOnly(group._name):
irc.error(_("This configuration variable is not writeable "
"via IRC. To change it you have to: 1) use the 'flush' command 2) edit "
"the config file 3) use the 'config reload' command."), Raise=True)
capability = getCapability(irc, group._name)
if ircdb.checkCapability(msg.prefix, capability):
# I think callCommand catches exceptions here. Should it?
group.set(value)
else:
irc.errorNoCapability(capability, Raise=True)
@internationalizeDocstring
def channel(self, irc, msg, args, network, channels, group, value):
"""[<network>] [<channel>] <name> [<value>]
If <value> is given, sets the channel configuration variable for <name>
to <value> for <channel> on the <network>.
Otherwise, returns the current channel
configuration value of <name>. <channel> is only necessary if the
message isn't sent in the channel itself. More than one channel may
be given at once by separating them with commas.
<network> defaults to the current network."""
if not group._channelValue:
irc.error(_('That configuration variable is not a channel-specific '
'configuration variable.'))
return
if value is not None:
for channel in channels:
assert irc.isChannel(channel)
# Sets the non-network-specific value, for forward
# compatibility, ie. this will work even if the owner rolls
# back Limnoria to an older version.
# It's also an easy way to support plugins which are not
# network-aware.
self._setValue(irc, msg, group.get(channel), value)
if network != '*':
# Set the network-specific value
self._setValue(irc, msg, group.get(':' + network.network).get(channel), value)
irc.replySuccess()
else:
if network == '*':
network = None
values = []
private = None
for channel in channels:
(value, private_value) = \
self._getValue(irc, msg, group, network, channel)
values.append((channel, value))
if private_value:
private = True
if len(channels) > 1:
irc.reply('; '.join(['%s: %s' % (channel, value)
for (channel, value) in values]),
private=private)
else:
irc.reply(values[0][1], private=private)
channel = wrap(channel, [optional(first(('literal', '*'), 'networkIrc')),
'channels', 'settableConfigVar',
additional('text')])
def network(self, irc, msg, args, network, group, value):
"""[<network>] <name> [<value>]
If <value> is given, sets the network configuration variable for <name>
to <value> for <network>.
Otherwise, returns the current network configuration value of <name>.
<network> defaults to the current network."""
if not group._networkValue:
irc.error(_('That configuration variable is not a network-specific '
'configuration variable.'))
return
if value is not None:
self._setValue(irc, msg, group.get(':' + network.network), value)
irc.replySuccess()
else:
values = []
private = None
(value, private) = \
self._getValue(irc, msg, group, network)
irc.reply(value, private=private)
network = wrap(network, ['networkIrc', 'settableConfigVar',
additional('text')])
@internationalizeDocstring
def config(self, irc, msg, args, group, value):
"""<name> [<value>]
If <value> is given, sets the value of <name> to <value>. Otherwise,
returns the current value of <name>. You may omit the leading
"supybot." in the name if you so choose.
"""
if value is not None:
self._setValue(irc, msg, group, value)
irc.replySuccess()
else:
(value, private) = self._getValue(
irc, msg, group, network=irc,
channel=msg.channel,
addGlobal=group._channelValue or group._networkValue)
irc.reply(value, private=private)
config = wrap(config, ['settableConfigVar', additional('text')])
@internationalizeDocstring
def help(self, irc, msg, args, group):
"""<name>
Returns the description of the configuration variable <name>.
"""
if hasattr(group, '_help'):
s = group.help()
if s:
if hasattr(group, 'value') and not group._private:
if msg.channel and \
msg.channel in group._children:
globvalue = str(group)
chanvalue = str(group.get(msg.channel))
if chanvalue != globvalue:
s += _(' (Current global value: %s; '
'current channel value: %s)') % \
(globvalue, chanvalue)
else:
s += _(' (Current value: %s)') % group
else:
s += _(' (Current value: %s)') % group
irc.reply(s)
else:
irc.reply(_('That configuration group exists, but seems to '
'have no help. Try "config list %s" to see if it '
'has any children values.') % group._name)
else:
irc.error(_('%s has no help.') % group._name)
help = wrap(help, ['configVar'])
@internationalizeDocstring
def default(self, irc, msg, args, group):
"""<name>
Returns the default value of the configuration variable <name>.
"""
v = group.__class__(group._default, '')
irc.reply(str(v))
default = wrap(default, ['settableConfigVar'])
@internationalizeDocstring
def reload(self, irc, msg, args):
"""takes no arguments
Reloads the various configuration files (user database, channel
database, registry, etc.).
"""
_reload() # This was factored out for SIGHUP handling.
irc.replySuccess()
reload = wrap(reload, [('checkCapability', 'owner')])
@internationalizeDocstring
def export(self, irc, msg, args, filename):
"""<filename>
Exports the public variables of your configuration to <filename>.
If you want to show someone your configuration file, but you don't
want that person to be able to see things like passwords, etc., this
command will export a "sanitized" configuration file suitable for
showing publicly.
"""
if not conf.supybot.commands.allowShell():
# Disallow writing arbitrary files
irc.error('This command is not available, because '
'supybot.commands.allowShell is False.', Raise=True)
registry.close(conf.supybot, filename, private=False)
irc.replySuccess()
export = wrap(export, [('checkCapability', 'owner'), 'filename'])
@internationalizeDocstring
def setdefault(self, irc, msg, args, group):
"""<name>
Resets the configuration variable <name> to its default value.
"""
v = str(group.__class__(group._default, ''))
self._setValue(irc, msg, group, v)
irc.replySuccess()
setdefault = wrap(setdefault, ['settableConfigVar'])
Class = Config
# vim:set shiftwidth=4 softtabstop=4 expandtab textwidth=79: