3 THIS IS NOT A RELEASE YET
5 MediaWiki 1.28 is an alpha-quality branch and is not recommended for use in
8 === Configuration changes in 1.28 ===
9 * $wgSend404Code now affects status code of action=history if the page is not there.
10 * BREAKING CHANGE: $wgHTTPProxy is now *required* for all external requests
11 made by MediaWiki via a proxy. Relying on the http_proxy environment
12 variable is no longer supported.
13 * The load.php entry point now enforces the existing policy of not allowing
14 access to session data, which includes the session user and the session
15 user's language. If such access is attempted, an exception will be thrown.
16 * The number of internal PBKDF2 iterations used to derive the session secret
17 is configurable via $wgSessionPbkdf2Iterations.
18 * Upload dialog's file upload log comment can now be configured separately for
19 local and foreign uploads.
20 * $wgForeignUploadTargets now defaults to `[ 'local' ]`, where `'local'`
21 signifies local uploads. A value of `[]` (empty array) now means that
22 no upload targets are allowed, effectively disabling the upload dialog.
23 * The deprecated $wgEditEncoding variable has been removed; it was only used
24 for Esperanto language character conversion. You are now recommended to use
25 input methods provided by the UniversalLanguageSelector extension.
26 * When $wgPingback is true, MediaWiki will periodically ping
27 https://www.mediawiki.org/beacon with basic information about the local
28 MediaWiki installation. This data includes, for example, the type of system,
29 PHP version, and chosen database backend. This behavior is off by default.
30 * When $wgEditSubmitButtonLabelPublish is true, MediaWiki will label the button
31 to store-to-database-and-show-to-others as "Publish page"/"Publish changes";
32 if false, the default, they will be "Save page"/"Save changes".
33 * The 'editcontentmodel' permission is now granted to all logged-in users ('user').
34 instead of just administrators ('sysop'). Documentation for this feature is
35 available at <https://www.mediawiki.org/wiki/Help:ChangeContentModel>.
36 * $wgRevisionCacheExpiry is now set to one week by default instead of being disabled.
37 * Magic links are now disabled by default, and can be re-enabled by modifying the value
38 of $wgEnableMagicLinks. Their usage is discouraged, but if they are manually enabled,
39 a tracking category will be added to help identify usage and make it easier to migrate
40 away from. If you depend upon magic link functionality, it is requested that you comment
41 on <https://www.mediawiki.org/wiki/Requests_for_comment/Future_of_magic_links> and
42 explain your use case(s).
44 === New features in 1.28 ===
45 * User::isBot() method for checking if an account is a bot role account.
46 * Added a new 'slideshow' mode for galleries.
47 * Added a new hook, 'UserIsBot', to aid in determining if a user is a bot.
48 * Added a new hook, 'ApiMakeParserOptions', to allow extensions to better
49 interact with API parsing.
50 * Added a new hook, 'UploadVerifyUpload', which can be used to reject a file
51 upload. Unlike 'UploadVerifyFile' it provides information about upload comment
52 and the file description page, but does not run for uploads to stash.
53 * (T141604) Extensions can now provide a better error message when their
54 maintenance scripts are run without the extension being installed.
55 * (T8948) Numeric sorting in categories is now supported by setting $wgCategoryCollation
56 to 'uca-default-u-kn' or 'uca-<langcode>-u-kn'. If you can't use UCA collations,
57 a 'numeric' collation is also available. If migrating from another
58 collation, you will need to run the updateCollation.php maintenance script.
59 * Two new codes have been added to #time parser function: "xit" for days in current
60 month, and "xiz" for days passed in the year, both in Iranian calendar.
61 * mw.Api has a new option, useUS, to use U+001F (Unit Separator) when
62 appropriate for sending multi-valued parameters. This defaults to true when
63 the mw.Api instance seems to be for the local wiki.
64 * After a client performs an action which alters a database that has replica databases,
65 MediaWiki will wait for the replica databases to synchronize with the master database
66 while it renders the HTML output. However, if the output is a redirect to another wiki
67 on the wiki farm with a different domain, MediaWiki will instead alter the redirect
68 URL to include a ?cpPosTime parameter that triggers the database synchronization when
69 the URL is followed by the client. The same-domain case uses a new cpPosTime cookie.
70 * Added new hooks, 'ApiQueryBaseBeforeQuery', 'ApiQueryBaseAfterQuery', and
71 'ApiQueryBaseProcessRow', to make it easier for extensions to add 'prop' and
72 'show' parameters to existing API query modules.
74 === External library changes in 1.28 ===
76 ==== Upgraded external libraries ====
77 * Updated es5-shim from v4.1.5 to v4.5.8
78 * Updated composer/semver from v1.4.1 to v1.4.2
79 * Updated wikimedia/php-session-serializer from v1.0.3 to v1.0.4
81 ==== New external libraries ====
82 * Added wikimedia/scoped-callback v1.0.0
83 * Added wikimedia/wait-condition-loop v1.0.1
85 ==== Removed and replaced external libraries ====
87 === Bug fixes in 1.28 ===
88 * (T146496) action=history pages should return 404 HTTP error code if the page does not exist
89 * (T137264) SECURITY: XSS in unclosed internal links
90 * (T133147) SECURITY: Escape '<' and ']]>' in inline <style> blocks
91 * (T133147) SECURITY: Require login to preview user CSS pages
92 * (T132926) SECURITY: Do not allow undeleting a revision deleted file if it is
94 * (T129738) SECURITY: Make $wgBlockDisablesLogin also restrict logged in
96 * (T129738) SECURITY: Make blocks log users out if $wgBlockDisablesLogin is true
97 * (T139670) Move 'UserGetRights' call before application of
98 Session::getAllowedUserRights()
100 === Action API changes in 1.28 ===
101 * Added 'maxarticlesize' property to action=query&meta=siteinfo which contains
102 the value of $wgMaxArticleSize.
103 * Property 'modulemessages' from action=parse&prop=modules was removed
104 (deprecated since 1.26).
105 * The following response properties from action=login, deprecated in 1.27, are
106 now removed: lgtoken, cookieprefix, sessionid. Clients should handle cookies
107 to properly manage session state.
108 * Submitting the lgtoken and lgpassword parameters in the query string to
109 action=login is now deprecated and outputs a warning. They should be submitted
110 in the POST body instead.
111 * Submitting sensitive authentication request parameters to action=clientlogin,
112 action=createaccount, action=linkaccount, and action=changeauthenticationdata
113 in the query string is now deprecated and outputs a warning. They should be
114 submitted in the POST body instead.
115 * (T141960) Multi-valued parameters may now be separated using U+001F (Unit Separator)
116 instead of the pipe character. This will be useful if some of the multiple
117 values need to contain pipes, e.g. for action=options.
118 * The API will now warn if input is not NFC-normalized Unicode or if it
119 contains invalid characters.
120 * The 'normalized' list output by action=query and other modules that use
121 ApiPageSet may contain entries where the 'from' value is percent-encoded as
122 the raw value cannot be represented in a valid API response. These are
123 indicated by a 'fromencoded' boolean alongside the existing 'from' parameter.
124 * (T28680) action=paraminfo can now return info about all submodules of a
125 module without listing them all explicitly.
126 * (T146770) It is now possible to assert that the current user is a specific
127 named user, using the 'assertuser' parameter.
128 * (T141963) Added a 'known' property when missing-but-known titles (e.g. from
129 the 'TitleIsAlwaysKnown' hook) are output in various modules.
131 === Action API internal changes in 1.28 ===
132 * Added a new hook, 'ApiMakeParserOptions', to allow extensions to better
133 interact with ApiParse and ApiExpandTemplates.
134 * (T139565) SECURITY: API: Generate head items in the context of the given title
135 * (T115333) SECURITY: Check read permission when loading page content in ApiParse
136 * ApiBase::getResultData() was removed (deprecated since 1.25)
137 * ApiBase::makeHelpArrayToString() was removed (deprecated since 1.25)
138 * ApiBase::makeHelpMsgParameters() was removed (deprecated since 1.25)
139 * ApiBase::makeHelpMsg() was removed (deprecated since 1.25)
140 * ApiFormatBase::formatHTML() was removed (deprecated since 1.25)
141 * ApiFormatBase::getNeedsRawData() was removed (deprecated since 1.25)
142 * ApiFormatBase::getWantsHelp() was removed (deprecated since 1.25)
143 * ApiFormatBase::setBufferResult() was removed (deprecated since 1.25)
144 * ApiFormatBase::setHelp() was removed (deprecated since 1.25)
145 * ApiFormatBase::setUnescapeAmps() was removed (deprecated since 1.25)
146 * ApiMain::makeHelpMsgHeader() was removed (deprecated since 1.25)
147 * ApiMain::reallyMakeHelpMsg() was removed (deprecated since 1.25)
148 * ApiMain::setHelp() was removed (deprecated since 1.25)
149 * ApiResult::beginContinuation() was removed (deprecated since 1.25)
150 * ApiResult::cleanUpUTF8() was removed (deprecated since 1.25)
151 * ApiResult::convertStatusToArray() was removed (deprecated since 1.25)
152 * ApiResult::disableSizeCheck() was removed (deprecated since 1.24)
153 * ApiResult::enableSizeCheck() was removed (deprecated since 1.24)
154 * ApiResult::endContinuation() was removed (deprecated since 1.25)
155 * ApiResult::getData() was removed (deprecated since 1.25)
156 * ApiResult::getIsRawMode() was removed (deprecated since 1.25)
157 * ApiResult::setContent() was removed (deprecated since 1.25)
158 * ApiResult::setContinueParam() was removed (deprecated since 1.25)
159 * ApiResult::setElement() was removed (deprecated since 1.25)
160 * ApiResult::setGeneratorContinueParam() was removed (deprecated since 1.25)
161 * ApiResult::setIndexedTagName_internal() was removed (deprecated since 1.25)
162 * ApiResult::setIndexedTagName_recursive() was removed (deprecated since 1.25)
163 * ApiResult::setMainForContinuation() was removed (deprecated since 1.25)
164 * ApiResult::setParsedLimit() was removed (deprecated since 1.25)
165 * ApiResult::setRawMode() was removed (deprecated since 1.25)
166 * ApiResult::size() was removed (deprecated since 1.25)
167 * Added new hooks, 'ApiQueryBaseBeforeQuery', 'ApiQueryBaseAfterQuery', and
168 'ApiQueryBaseProcessRow', to make it easier for extensions to add 'prop' and
169 'show' parameters to existing API query modules. A query module can enable
170 these hooks by passing an array for $hookData to ApiQueryBase::select() and
171 by calling ApiQueryBase->processRow() before adding a row's data to the
174 === Languages updated in 1.28 ===
176 MediaWiki supports over 350 languages. Many localisations are updated
177 regularly. Below only new and removed languages are listed, as well as
178 changes to languages because of Phabricator reports.
180 * (T137411) ban (Balinese), thanks to translators Adi Mayndra, Andru,
181 BASAbali, M. Adiputra, Naval Scene, Nemo bis, NoiX180, and 아라.
182 * (T135867) shn (Shan), thanks to translators Khun Sar, Piangpha,
183 Saiddzone Saimawnkham, Saosukham, and Sengwan.
184 * Czech (cs) and Slovak (sk) set as reciprocal fallbacks.
185 * (T146744) Livvi-Karelian (olo) namespace messages created thanks to translator Ilja.mos.
187 === Other changes in 1.28 ===
188 * (T128697) Improved handling of large diffs.
189 * [BREAKING CHANGE] $wgExtendedLoginCookies has been removed. You can
190 use or update a custom session provider if needed.
191 * Deprecated APIEditBeforeSave hook in favor of EditFilterMergedContent.
192 * The 'UploadVerification' hook is deprecated. Use 'UploadVerifyFile' instead.
193 * SiteConfiguration::isLocalVHost() was removed (deprecated since 1.25).
194 * The 'UserLoginComplete' hook has a new parameter to differentiate between actual
195 login and visiting the login page while already logged in.
196 * ResourceLoader::makeLoaderURL() was removed (deprecated since 1.24).
197 * $.fn.liveAndTestAtStart was removed (deprecated since 1.24).
198 * mw.util.tooltipAccessKeyPrefix was removed (deprecated since 1.24).
199 * mw.util.tooltipAccessKeyRegexp was removed (deprecated since 1.24).
200 * Linker::link() and Linker::linkKnown() were deprecated; please instead use
201 MediaWiki\Linker\LinkRenderer. In addition, the LinkBegin and LinkEnd hooks
202 were replaced by HtmlPageLinkRendererBegin and HtmlPageLinkRendererEnd
203 respectively. See docs/hooks.txt for the specific changes needed for those hooks.
204 * Linker::formatSize() was deprecated. Use Language::formatSize() directly.
205 * Aliases for Linker methods, deprecated since 1.21, were removed from Skin:
206 * Skin::commentBlock() (use Linker::commentBlock() instead)
207 * Skin::generateRollback() (use Linker::generateRollback() instead)
208 * Skin::link() (use MediaWiki\Linker\LinkRenderer instead)
209 * Skin::linkKnown() (use MediaWiki\Linker\LinkRenderer instead)
210 * Skin::userLink() (use Linker::userLink() instead)
211 * Skin::userToolLinks() (use Linker::userToolLinks() instead)
212 * The 'ParserLimitReportFormat' hook was removed.
213 * Disabled "bug 2702" HTML tidying of parsed UI messages on wikis where Tidy is
215 * DifferenceEngine::generateDiffBody() was removed (deprecated since 1.21).
216 * UploadBase::stashFileGetKey() and UploadBase::stashSession() were deprecated.
217 Use ...->stashFile()->getFileKey() instead.
218 * "Public domain" was removed as a wiki license option from the installer, in
220 * AuthenticationRequest::$required is now changed from REQUIRED to PRIMARY_REQUIRED
221 on requests needed by primary providers even if all primaries need them.
222 Primary providers are discouraged from returning multiple REQUIRED requests.
223 * OOjs UI PHP widgets constructed with the `'infusable' => true` config option
224 will no longer be automatically infused. You should call `OO.ui.infuse()`
225 on them yourself from your JavaScript code.
226 * parserTests.php has moved to tests/parser/parserTests.php
227 * The command line options specific to parser tests have been removed from
228 phpunit.php: --regex and --keep-uploads. Instead of --regex, use --filter.
229 Instead of --keep-uploads, use the same option to parserTests.php, but you
230 must specify a directory with --upload-dir.
231 * The 'jquery.arrowSteps' ResourceLoader module is now deprecated.
232 * IP::isConfiguredProxy() and IP::isTrustedProxy() were removed. Callers should
233 migrate to using the same functions on a ProxyLookup instance, obtainable from
235 * The ArticleAfterFetchContent, ArticleInsertComplete, ArticleSave, ArticleSaveComplete,
236 ArticleViewCustom, EditFilterMerged, EditPageGetDiffText, EditPageGetPreviewText and
237 ShowRawCssJs hooks will now emit deprecation warnings if used.
238 * (T68404) CSS3 attr() function with url type is no longer allowed
243 MediaWiki 1.28 requires PHP 5.5.9 or later. There is experimental support for
246 MySQL is the recommended DBMS. PostgreSQL or SQLite can also be used, but
247 support for them is somewhat less mature. There is experimental support for
248 Oracle and Microsoft SQL Server.
250 The supported versions are:
252 * MySQL 5.0.3 or later
253 * PostgreSQL 8.3 or later
254 * SQLite 3.3.7 or later
255 * Oracle 9.0.1 or later
256 * Microsoft SQL Server 2005 (9.00.1399)
260 1.28 has several database changes since 1.27, and will not work without schema
261 updates. Note that due to changes to some very large tables like the revision
262 table, the schema update may take quite long (minutes on a medium sized site,
263 many hours on a large site).
265 If upgrading from before 1.11, and you are using a wiki as a commons
266 repository, make sure that it is updated as well. Otherwise, errors may arise
267 due to database schema changes.
269 If upgrading from before 1.7, you may want to run refreshLinks.php to ensure
270 new database fields are filled with data.
272 If you are upgrading from MediaWiki 1.4.x or earlier, you should upgrade to
273 1.5 first. The upgrade script maintenance/upgrade1_5.php has been removed
276 Don't forget to always back up your database before upgrading!
278 See the file UPGRADE for more detailed upgrade instructions.
280 For notes on 1.27.x and older releases, see HISTORY.
282 == Online documentation ==
284 Documentation for both end-users and site administrators is available on
285 MediaWiki.org, and is covered under the GNU Free Documentation License (except
286 for pages that explicitly state that their contents are in the public domain):
288 https://www.mediawiki.org/wiki/Special:MyLanguage/Documentation
292 A mailing list is available for MediaWiki user support and discussion:
294 https://lists.wikimedia.org/mailman/listinfo/mediawiki-l
296 A low-traffic announcements-only list is also available:
298 https://lists.wikimedia.org/mailman/listinfo/mediawiki-announce
300 It's highly recommended that you sign up for one of these lists if you're
301 going to run a public MediaWiki, so you can be notified of security fixes.
305 There's usually someone online in #mediawiki on irc.freenode.net.