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SedRegex: make the regexp process timeout configurable

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Although the default has been adequate on my systems, busy or low-powered machines may fail to process regexps quickly enough and cause SedRegex to sporadically error.

Reported by @cottongin via IRC.

From: 51ff41251b
This commit is contained in:
James Lu 2017-12-08 12:30:50 -08:00
parent fd7aa571e9
commit e831d0e8ec
2 changed files with 10 additions and 1 deletions
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8
plugins/SedRegex/config.py
View File

@ -56,5 +56,13 @@ conf.registerChannelValue(SedRegex, 'enable',
conf.registerChannelValue(SedRegex, 'ignoreRegex',
registry.Boolean(True, _("""Should Perl/sed regex replacing
ignore messages which look like valid regex?""")))
conf.registerGlobalValue(SedRegex, 'processTimeout',
registry.PositiveFloat(0.05, _("""Sets the timeout when processing a single
regexp. The default should be adequate unless
you have a busy or low-powered system that
cannot process regexps quickly enough. However,
you will not want to set this value too high
as that would make your bot vulnerable to ReDoS
attacks.""")))
# vim:set shiftwidth=4 tabstop=4 expandtab textwidth=79:

3
plugins/SedRegex/plugin.py
View File

@ -153,7 +153,8 @@ class SedRegex(callbacks.PluginRegexp):
else:
messageprefix = '%s thinks %s' % (msg.nick, m.nick)
try:
if regexp_wrapper(text, pattern, timeout=0.05, plugin_name=self.name(),
regex_timeout = self.registryValue('processTimeout')
if regexp_wrapper(text, pattern, timeout=regex_timeout, plugin_name=self.name(),
fcn_name='replacer'):
if self.registryValue('boldReplacementText', msg.args[0]):
replacement = ircutils.bold(replacement)