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Udvidelse:Misbrugfilter

This page is a translated version of the page Extension:AbuseFilter and the translation is 26% complete.

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MediaWiki extensions manual
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AbuseFilter
Release status: stabil
AbuseFilter-Management.png
Implementation User activity , Special page , API
Beskrivelse Muliggør specifik adfærd-baserede restriktioner, der skal placeres på wiki-aktivitet
Forfatter(e)
Compatibility policy release branches
MediaWiki 1.33+
PHP 5.4+ er anbefalet
Database changes Ja
Tabeller abuse_filter
abuse_filter_action
abuse_filter_history
abuse_filter_log
Licens GNU General Public License 2.0 or later
Download
  • $wgAbuseFilterActions
  • $wgAbuseFilterConditionLimit
  • $wgAbuseFilterEmergencyDisableThreshold
  • $wgAbuseFilterEmergencyDisableCount
  • $wgAbuseFilterEmergencyDisableAge
  • $wgAbuseFilterParserClass
  • $wgAbuseFilterRestrictions
  • $wgAbuseFilterNotifications
  • $wgAbuseFilterNotificationsPrivate
  • $wgAbuseFilterCentralDB
  • $wgAbuseFilterIsCentral
  • $wgAbuseFilterDisallowGlobalLocalBlocks
  • $wgAbuseFilterBlockDuration
  • $wgAbuseFilterAnonBlockDuration
  • $wgAbuseFilterCustomActionsHandler
  • $wgAbuseFilterValidGroups
  • $wgAbuseFilterDefaultWarningMessage
  • $wgAbuseFilterIPMaxAge
  • $wgAbuseFilterProfileActionsCap
  • $wgAbuseFilterLogPrivateDetailsAccess
  • $wgAbuseFilterPrivateDetailsForceReason
  • abusefilter-view
  • abusefilter-log
  • abusefilter-log-detail
  • abusefilter-revert
  • abusefilter-privatedetails
  • abusefilter-privatedetails-log
  • abusefilter-view-private
  • abusefilter-log-private
  • abusefilter-hidden-log
  • abusefilter-hide-log
  • abusefilter-modify
  • abusefilter-modify-restricted
  • abusefilter-modify-global
Translate the AbuseFilter extension if it is available at translatewiki.net
Check usage and version matrix.
Issues Open tasks · Report a bug

The AbuseFilter extension allows privileged users to set specific actions to be taken when actions by users, such as edits, match certain criteria.

For example, a filter could be created to prevent anonymous users from adding external links, or to block a user who removes more than 2000 characters.

Installation

  • Download and place the file(s) in a directory called AbuseFilter in your extensions/ folder.
  • Only when installing from git run Composer to install PHP dependencies, by issuing composer install --no-dev in the extension directory. (See T173141 for potential complications.)
  • Add the following code at the bottom of your LocalSettings.php:
    wfLoadExtension( 'AbuseFilter' );
    
  • Run the update script which will automatically create the necessary database tables that this extension needs.
  • Configure as required.
  •   Done – Navigate to Special:Version on your wiki to verify that the extension is successfully installed.

To users running MediaWiki 1.26 or earlier:

The instructions above describe the new way of installing this extension using wfLoadExtension(). If you need to install this extension on these earlier versions (MediaWiki 1.26 and earlier), instead of wfLoadExtension( 'AbuseFilter' );, you need to use:

require_once "$IP/extensions/AbuseFilter/AbuseFilter.php";

Konfiguration

Brugerrettigheder

Once you installed the extension, you'll have to set up the user rights in "LocalSettings.php".

Rettighed Beskrivelse
abusefilter-modify Redigér misbrugsfiltre
abusefilter-view Se misbrugsfiltre
abusefilter-log Se misbrugsloggen
abusefilter-log-detail Se detaljerede poster i misbrugsloggen
abusefilter-privatedetails Se privat information i misbrugsloggen
abusefilter-modify-restricted Ændre misbrugsfiltre med begrænsede handlinger
abusefilter-modify-global Opret eller redigér globale misbrugsfiltre
abusefilter-revert Tilbagerul alle ændringer udført af et bestemt misbrugsfilter
abusefilter-view-private Se misbrugsfiltre markeret som private
abusefilter-log-private Se logposter fra misbrugsfiltre der er markeret som private
abusefilter-hide-log Skjule poster i misbrugslog
abusefilter-hidden-log Se skjulte poster i misbrugslog
abusefilter-privatedetails-log Se misbrugsfiltret for private oplysningers adgangslog

For example, the following sample configuration would allow sysops to do everything they want with AbuseFilter, and everyone to view the log and see public filter settings:

$wgGroupPermissions['sysop']['abusefilter-modify'] = true;
$wgGroupPermissions['*']['abusefilter-log-detail'] = true;
$wgGroupPermissions['*']['abusefilter-view'] = true;
$wgGroupPermissions['*']['abusefilter-log'] = true;
$wgGroupPermissions['sysop']['abusefilter-private'] = true;
$wgGroupPermissions['sysop']['abusefilter-modify-restricted'] = true;
$wgGroupPermissions['sysop']['abusefilter-revert'] = true;
Filters marked as private can only be viewed by users with either the abusefilter-modify or abusefilter-view-private permission.

Parameters

Variabelnavn Standardværdi Beskrivelse
$wgAbuseFilterActions
[
    'throttle' => true,
    'warn' => true,
    'disallow' => true,
    'blockautopromote' => true,
    'block' => true,
    'rangeblock' => false,
    'degroup' => true,
    'tag' => true
]
De mulige tiltag, der kan træffes af misbrug filtre. When adding a new action, check if it is restricted in $wgAbuseFilterRestrictions and, if it is, don't forget to add the abusefilter-modify-restricted right to the appropriate user groups.
$wgAbuseFilterConditionLimit
1000
Det maksimale antal 'vilkår', der kan bruges hver gang filtrene køres mod en ændring. (Mere komplekse filtre kræver flere 'betingelser') .
$wgAbuseFilterValidGroups
[
    'default'
]
The list of "groups" filters can be divided into. By default there is only one group. Other extensions may add other groups.
$wgAbuseFilterEmergencyDisableThreshold
[
    'default' => 0.05
]
Disable a filter if it matched more than 2 edits, constituting more than 5 % of the actions which were checked against the filter's group in the "observed" period (at most one day), unless the filter has been changed in the last 86400 seconds (one day). See emergency throttling.
$wgAbuseFilterEmergencyDisableCount
[
    'default' => 2
]
$wgAbuseFilterEmergencyDisableAge
[
    'default' => 86400
]
$wgAbuseFilterParserClass
'AbuseFilterParser'
Name of AbuseFilter's parser class.
$wgAbuseFilterRestrictions
[
    'block' => true,
    'degroup' => true,
    'blockautopromote' => true,
    'rangeblock' => true
]
Users must have the "abusefilter-modify-restricted" user right as well as "abusefilter-modify" in order to create or modify filters which carry out these actions.
$wgAbuseFilterNotifications
false
Allows to configure the extension to send hit notifications to Special:RecentChanges or UDP. Tilgængelige indstillinger: rc, udp, rcandudp
$wgAbuseFilterNotificationsPrivate
false
Aktiver meddelelser til private filtre.
$wgAbuseFilterCentralDB
null
Name of a database where global abuse filters will be stored in (only supported in the latest, development version).
$wgAbuseFilterIsCentral
false
Set this variable to true for the wiki where global AbuseFilters are stored in (only supported in the latest, development version).
$wgAbuseFilterDisallowGlobalLocalBlocks
false
Disallow Centralised filters from taking actions that locally block, remove from groups, or revoke permissions.
$wgAbuseFilterBlockDuration
'indefinite'
Varighed af blokeringer fra AbuseFilter
as of 1.31.0-wmf.25 block durations may be specified for every single filter and will override this variable. This variable is only used when enabling the block in order to preselect a default duration.
$wgAbuseFilterAnonBlockDuration
null
Duration of blocks made by AbuseFilter on users who are not logged in. The value of $wgAbuseFilterBlockDuration will be used if this is not set.
as of 1.31.0-wmf.25 block durations may be specified for every single filter and will override this variable. This variable is only used when enabling the block in order to preselect a default duration.
$wgAbuseFilterCustomActionsHandlers
[ ]
Callback funktioner for brugerdefinerede handlinger.
$wgAbuseFilterDefaultWarningMessage
[
    'default' => 'abusefilter-warning'
]
Standard advarselsmeddelelser, pr filter gruppe
$wgAbuseFilterLogIPMaxAge
3 * 30 * 24 * 3600
Age used as cutoff when purging old IP log data. Defaults to 3 months. Used by maintenance script purgeOldLogIPData.php.
$wgAbuseFilterProfileActionsCap
10000
Number of action that determines when to reset profiling stats.
$wgAbuseFilterLogPrivateDetailsAccess
false
Whether accessing private information from a filter log entry is logged.
$wgAbuseFilterPrivateDetailsForceReason
false
Whether users are forced to provide a reason for accessing private information from a filter log entry.

Emergency throttling

AbuseFilter comes with a feature that automatically throttles (disable) filters that have been edited recently and match a certain theresold of the latest actions.

This is done to prevent harmful edits on the filters to block every user that performs an action on the wiki or similar.

The condition to disable the filter depend on those variables:

  • $wgAbuseFilterEmergencyDisableThreshold - Percent of matches over the total amount of actions in the observed period.
  • $wgAbuseFilterEmergencyDisableCount - Count of matches of the filter in the observed period.
  • $wgAbuseFilterEmergencyDisableAge - Age of the filter to take it into account. If the last edit of the filter is older than this number of seconds, the filter won't be throttled, unless it's already throttled.
  • $wgAbuseFilterProfileActionsCap - Maximum number of recent actions to count against the threshold. Note that each action increments a counter, and once this counter reaches this configured value, this counter and the number of recent actions that matches all filters are reset to 0.

Throttled filters can be identified in the list of filters (Special:AbuseFilter) with the state Enabled, throttled. Throttling happens silently, and there's no way to see when a filter got throttled.

When a filter gets throttled, it doesn't perform any dangerous action (the ones specified in $wgAbuseFilterRestrictions), and only "safe" actions are allowed. Throttled filters don't get enabled automatically. To disable the throttling, you need to edit the filter. Note that you need to actually change something from the filter: changing somethin from the filter's notes is sufficient.

Note that editing the filter updates its age, and can cause it to be disabled if it reaches again the conditions to be throttled in a short period since the last edit, leading to a unusable filter if your wiki has more abuse edits than legitimate ones. Filters can also get randomly throttled if the action count reaches $wgAbuseFilterProfileActionsCap, causing all filter matches count to reset to 0, and then someone repeatedly makes a filter to hit.

Creating and managing filters

Når udvidelsen er installeret, kan filtre oprettes/testes/ændres/slettes, og logfiler kan tilgås fra misbrug filter håndterings side Special:AbuseFilter.

API

AbuseFilter adds two API list modules, one for details of abuse filters ("abusefilters") and one for the abuse log, since it is separate from other MediaWiki logs ("abuselog"). It is not possible to create or modify abuse filters using the API.

list = abusefilters

Liste oplysninger om filtre

Parameters
  • abfstartid - The filter id to start enumerating from
  • abfendid - The filter id to stop enumerating at
  • abfdir - The direction in which to enumerate (older, newer)
  • abfshow - Show only filters which meet these criteria (enabled|!enabled|deleted|!deleted|private|!private)
  • abflimit - The maximum number of filters to list
  • abfprop - Which properties to get (id|description|pattern|actions|hits|comments|lasteditor|lastedittime|status|private)

When filters are private, some of the properties specified with abfprop will be missing unless you have the appropriate user rights.

Eksempler

List non-private abuse filters

list = abuselog

Liste tilfælde, hvor handlinger udløst et misbrug filter.

Parameters
  • aflstart - The timestamp to start enumerating from
  • aflend - The timestamp to stop enumerating at
  • afldir - The direction in which to enumerate (older, newer)
  • afluser - Show only entries where the action was attempted by a given user or IP address.
  • afltitle - Show only entries where the action involved a given page.
  • aflfilter - Show only entries that triggered a given filter ID
  • afllimit - The maximum number of entries to list
  • aflprop - Which properties to get (ids|user|title|action|result|timestamp|details)
Eksempel

List instances where the abuse filter was triggered in response to actions from the user "SineBot"

Possible errors

  • Some users might experience that creating new filters or modifying old filters fail and the user just gets redirected to the original page. If the Wiki is using SSL certificates, this error could possibly be because of the $wgServer value, which might be using "http://" instead of "https://". An indication of this error will be, the browser giving https warning for Special:AbuseFilter pages. (Topic:T23dyyih0ofjada5)

Se også