Manual:shell.php
MediaWiki file: shell.php | |
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Location: | maintenance/ |
Source code: | master • 1.42.1 • 1.41.2 • 1.39.8 |
Classes: | MediaWikiShell |
shell.php is a maintenance script that is located in the maintenance
directory that provides a REPL shell you can use to play live with MediaWiki objects and functions.
It is based on PsySH; it replaces eval.php which is less robust and has fewer features.
Beyond the ability to evaluate PHP statements, functionality includes handling errors and fatals in a way that does not break the shell, examining object internals, source code and documentation via reflection, external editor integration and more.
Usage
[edit]Interactively: php maintenance/shell.php
Executing PHP commands from a file: cat commands.txt | maintenance/shell.php
Options
[edit]Option | Description |
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--log-channels | Print logs sent to the given log channels. Comma-separated: --log-channels authentication,cookie,session Log levels can be filtered with --log-channels authentication,cookie:info,session:error
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--log-all | Print logs sent to all channels |
--dbo-debug | Log more database-related information (roughly the same as setting $wgDebugDumpSql )
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--no-session | Pretend MW_NO_SESSION has been set (useful for debugging code that's invoked from no-session endpoints such as load.php )
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Examples
[edit]Command execution and error handling
[edit]$ php maintenance/shell.php Psy Shell v0.12.2 (PHP 7.4.33 — cli) by Justin Hileman > MW::user('Admin') = MediaWiki\User\User {#5704 +mId: 1, +mName: "Admin", +mActorId: 1, +mRealName: "", +mEmail: "[email protected]", +mTouched: "20240114073920", +mEmailAuthenticated: "20010101000000", +mFrom: "id", mId: 1, mName: "Admin", mActorId: 1, mRealName: "", mEmail: "[email protected]", mTouched: "20240114073920", mEmailAuthenticated: "20010101000000", mFrom: "id", } > // use $_ for previous return value > $_->mQuickTouched PHP Error: Cannot access protected property User::$mQuickTouched in Psy Shell code on line 2 > sudo $_->mQuickTouched = null > User::newFromIdentity(0) TypeError Argument 1 passed to MediaWiki\User\User::newFromIdentity() must implement interface MediaWiki\User\UserIdentity, int given, called on line 2. > wtf TypeError Argument 1 passed to MediaWiki\User\User::newFromIdentity() must implement interface MediaWiki\User\UserIdentity, int given, called on line 2. -- 0: () at includes/user/User.php:652 1: MediaWiki\User\User::newFromIdentity() at eval()'d code:2 2: eval() at vendor/psy/psysh/src/ExecutionLoopClosure.php:52 Use wtf -a to see 8 more lines
Reflection
[edit]> ls Message Class Constants: FORMAT_BLOCK_PARSE, FORMAT_ESCAPED, FORMAT_PARSE, FORMAT_PLAIN, FORMAT_TEXT Class Methods: __construct, __toString, bitrateParam, bitrateParams, content, durationParam, durationParams, escaped, exists, expiryParam, expiryParams, getFormat, getKey, getKeysToTry, getLanguage, getParams, getTitle, inContentLanguage, inLanguage, isBlank, isDisabled, isMultiKey, listParam, newFallbackSequence, newFromKey, newFromSpecifier, numParam, numParams, params, parse, parseAsBlock, plain, plaintextParam, plaintextParams, rawParam, rawParams, serialize, setContext, setInterfaceMessageFlag, sizeParam, sizeParams, text, timeperiodParam, timeperiodParams, title, toString, unserialize, useDatabase > doc Message::setContext public function setContext(IContextSource $context) Description: Set the language and the title from a context object Param: IContextSource $context Return: Message $this Since: 1.19 >>> show Message::setContext > 724| public function setContext( IContextSource $context ) { 725| $this->inLanguage( $context->getLanguage() ); 726| $this->title( $context->getTitle() ); 727| $this->interface = true; 728| 729| return $this; 730| }
Debug output
[edit]$ php maintenance/shell.php --log-all --dbo-debug [debug] [DBReplication] Wikimedia\Rdbms\LBFactory::getChronologyProtector: using request info { "IPAddress": "", "UserAgent": "", "ChronologyProtection": "true" } [debug] [DBConnection] Wikimedia\Rdbms\LoadBalancer::openConnection: calling initLB() before first connection. [debug] [DBConnection] Connected to database 0 at '127.0.0.1'. [debug] [DBQuery] wiki SHOW /* Wikimedia\Rdbms\DatabaseMysqlBase::serverIsReadOnly */ GLOBAL VARIABLES LIKE 'read_only' [debug] [DBQuery] SHOW GLOBAL VARIABLES LIKE 'read_only' Psy Shell v0.8.5 (PHP 5.6.30-0+deb8u1 — cli) by Justin Hileman >>> MW::message("Recentchanges")->text() [debug] [CryptRand] mcrypt_create_iv generated 20 bytes of randomness. [debug] [CryptRand] 0 bytes of randomness leftover in the buffer. [info] [MessageCache] MessageCache::load: Loading en... local cache is empty, got from global cache => "Recent changes"
Editline integration
[edit]PsySH can integrate with readline / editline (PHP usually comes pre-built with the latter).
A sample .editrc
for history search:
# make PgUp/PgDown work, sort of
# editline has no prefix search so use fulltext search
bind "\e[5~" ed-search-prev-history
bind "\e[6~" ed-search-next-history