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ApiBase.php
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<?php
/**
* Copyright © 2006, 2010 Yuri Astrakhan "<Firstname><Lastname>@gmail.com"
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
* http://www.gnu.org/copyleft/gpl.html
*
* @file
*/
namespace MediaWiki\Api;
use InvalidArgumentException;
use LogicException;
use MediaWiki\Api\Validator\SubmoduleDef;
use MediaWiki\Block\Block;
use MediaWiki\Context\ContextSource;
use MediaWiki\Context\IContextSource;
use MediaWiki\HookContainer\HookContainer;
use MediaWiki\Language\RawMessage;
use MediaWiki\MainConfigNames;
use MediaWiki\MediaWikiServices;
use MediaWiki\Message\Message;
use MediaWiki\Page\PageIdentity;
use MediaWiki\ParamValidator\TypeDef\NamespaceDef;
use MediaWiki\Permissions\Authority;
use MediaWiki\Permissions\PermissionManager;
use MediaWiki\Permissions\PermissionStatus;
use MediaWiki\Registration\ExtensionRegistry;
use MediaWiki\Specials\SpecialVersion;
use MediaWiki\Status\Status;
use MediaWiki\Title\Title;
use MediaWiki\User\User;
use MediaWiki\User\UserRigorOptions;
use MWException;
use ReflectionClass;
use StatusValue;
use stdClass;
use Throwable;
use Wikimedia\Message\MessageSpecifier;
use Wikimedia\ParamValidator\ParamValidator;
use Wikimedia\ParamValidator\TypeDef\EnumDef;
use Wikimedia\ParamValidator\TypeDef\IntegerDef;
use Wikimedia\ParamValidator\TypeDef\StringDef;
use Wikimedia\Rdbms\IReadableDatabase;
use Wikimedia\Timestamp\TimestampException;
use WikiPage;
/**
* This abstract class implements many basic API functions, and is the base of
* all API classes.
*
* The class functions are divided into several areas of functionality:
*
* Module parameters: Derived classes can define getAllowedParams() to specify
* which parameters to expect, how to parse and validate them.
*
* Self-documentation: code to allow the API to document its own state
*
* @stable to extend
*
* @ingroup API
*/
abstract class ApiBase extends ContextSource {
use ApiBlockInfoTrait;
/** @var HookContainer */
private $hookContainer;
/** @var ApiHookRunner */
private $hookRunner;
/**
* @name Old constants for ::getAllowedParams() arrays
* @{
*/
/**
* @deprecated since 1.35, use ParamValidator::PARAM_DEFAULT instead
*/
public const PARAM_DFLT = ParamValidator::PARAM_DEFAULT;
/**
* @deprecated since 1.35, use ParamValidator::PARAM_ISMULTI instead
*/
public const PARAM_ISMULTI = ParamValidator::PARAM_ISMULTI;
/**
* @deprecated since 1.35, use ParamValidator::PARAM_TYPE instead
*/
public const PARAM_TYPE = ParamValidator::PARAM_TYPE;
/**
* @deprecated since 1.35, use IntegerDef::PARAM_MAX instead
*/
public const PARAM_MAX = IntegerDef::PARAM_MAX;
/**
* @deprecated since 1.35, use IntegerDef::PARAM_MAX2 instead
*/
public const PARAM_MAX2 = IntegerDef::PARAM_MAX2;
/**
* @deprecated since 1.35, use IntegerDef::PARAM_MIN instead
*/
public const PARAM_MIN = IntegerDef::PARAM_MIN;
/**
* @deprecated since 1.35, use ParamValidator::PARAM_ALLOW_DUPLICATES instead
*/
public const PARAM_ALLOW_DUPLICATES = ParamValidator::PARAM_ALLOW_DUPLICATES;
/**
* @deprecated since 1.35, use ParamValidator::PARAM_DEPRECATED instead
*/
public const PARAM_DEPRECATED = ParamValidator::PARAM_DEPRECATED;
/**
* @deprecated since 1.35, use ParamValidator::PARAM_REQUIRED instead
*/
public const PARAM_REQUIRED = ParamValidator::PARAM_REQUIRED;
/**
* @deprecated since 1.35, use SubmoduleDef::PARAM_SUBMODULE_MAP instead
*/
public const PARAM_SUBMODULE_MAP = SubmoduleDef::PARAM_SUBMODULE_MAP;
/**
* @deprecated since 1.35, use SubmoduleDef::PARAM_SUBMODULE_PARAM_PREFIX instead
*/
public const PARAM_SUBMODULE_PARAM_PREFIX = SubmoduleDef::PARAM_SUBMODULE_PARAM_PREFIX;
/**
* @deprecated since 1.35, use ParamValidator::PARAM_ALL instead
*/
public const PARAM_ALL = ParamValidator::PARAM_ALL;
/**
* @deprecated since 1.35, use NamespaceDef::PARAM_EXTRA_NAMESPACES instead
*/
public const PARAM_EXTRA_NAMESPACES = NamespaceDef::PARAM_EXTRA_NAMESPACES;
/**
* @deprecated since 1.35, use ParamValidator::PARAM_SENSITIVE instead
*/
public const PARAM_SENSITIVE = ParamValidator::PARAM_SENSITIVE;
/**
* @deprecated since 1.35, use EnumDef::PARAM_DEPRECATED_VALUES instead
*/
public const PARAM_DEPRECATED_VALUES = EnumDef::PARAM_DEPRECATED_VALUES;
/**
* @deprecated since 1.35, use ParamValidator::PARAM_ISMULTI_LIMIT1 instead
*/
public const PARAM_ISMULTI_LIMIT1 = ParamValidator::PARAM_ISMULTI_LIMIT1;
/**
* @deprecated since 1.35, use ParamValidator::PARAM_ISMULTI_LIMIT2 instead
*/
public const PARAM_ISMULTI_LIMIT2 = ParamValidator::PARAM_ISMULTI_LIMIT2;
/**
* @deprecated since 1.35, use StringDef::PARAM_MAX_BYTES instead
*/
public const PARAM_MAX_BYTES = StringDef::PARAM_MAX_BYTES;
/**
* @deprecated since 1.35, use StringDef::PARAM_MAX_CHARS instead
*/
public const PARAM_MAX_CHARS = StringDef::PARAM_MAX_CHARS;
/** @} */
/**
* (boolean) Inverse of IntegerDef::PARAM_IGNORE_RANGE
* @deprecated since 1.35
*/
public const PARAM_RANGE_ENFORCE = 'api-param-range-enforce';
// region API-specific constants for ::getAllowedParams() arrays
/** @name API-specific constants for ::getAllowedParams() arrays */
/**
* (string|array|Message) Specify an alternative i18n documentation message
* for this parameter. Default is apihelp-{$path}-param-{$param}.
* See Message::newFromSpecifier() for a description of allowed values.
* @since 1.25
*/
public const PARAM_HELP_MSG = 'api-param-help-msg';
/**
* ((string|array|Message)[]) Specify additional i18n messages to append to
* the normal message for this parameter.
* See Message::newFromSpecifier() for a description of allowed values.
* @since 1.25
*/
public const PARAM_HELP_MSG_APPEND = 'api-param-help-msg-append';
/**
* (array) Specify additional information tags for the parameter.
* The value is an array of arrays, with the first member being the 'tag' for the info
* and the remaining members being the values. In the help, this is
* formatted using apihelp-{$path}-paraminfo-{$tag}, which is passed
* $1 = count, $2 = comma-joined list of values, $3 = module prefix.
* @since 1.25
*/
public const PARAM_HELP_MSG_INFO = 'api-param-help-msg-info';
/**
* Deprecated and unused.
* @since 1.25
* @deprecated since 1.35
*/
public const PARAM_VALUE_LINKS = 'api-param-value-links';
/**
* ((string|array|Message)[]) When PARAM_TYPE is an array, or 'string'
* with PARAM_ISMULTI, this is an array mapping parameter values to help messages.
* See Message::newFromSpecifier() for a description of allowed values.
*
* When PARAM_TYPE is an array, any value not having a mapping will use
* the apihelp-{$path}-paramvalue-{$param}-{$value} message. (This means
* you can use an empty array to use the default message key for all
* values.)
*
* @since 1.25
* @note Use with PARAM_TYPE = 'string' is allowed since 1.40.
*/
public const PARAM_HELP_MSG_PER_VALUE = 'api-param-help-msg-per-value';
/**
* (array) Indicate that this is a templated parameter, and specify replacements. Keys are the
* placeholders in the parameter name and values are the names of (unprefixed) parameters from
* which the replacement values are taken.
*
* For example, a parameter "foo-{ns}-{title}" could be defined with
* PARAM_TEMPLATE_VARS => [ 'ns' => 'namespaces', 'title' => 'titles' ]. Then a query for
* namespaces=0|1&titles=X|Y would support parameters foo-0-X, foo-0-Y, foo-1-X, and foo-1-Y.
*
* All placeholders must be present in the parameter's name. Each target parameter must have
* PARAM_ISMULTI true. If a target is itself a templated parameter, its PARAM_TEMPLATE_VARS must
* be a subset of the referring parameter's, mapping the same placeholders to the same targets.
* A parameter cannot target itself.
*
* @since 1.32
*/
public const PARAM_TEMPLATE_VARS = 'param-template-vars';
// endregion -- end of API-specific constants for ::getAllowedParams() arrays
public const ALL_DEFAULT_STRING = '*';
/** Fast query, standard limit. */
public const LIMIT_BIG1 = 500;
/** Fast query, apihighlimits limit. */
public const LIMIT_BIG2 = 5000;
/** Slow query, standard limit. */
public const LIMIT_SML1 = 50;
/** Slow query, apihighlimits limit. */
public const LIMIT_SML2 = 500;
/**
* getAllowedParams() flag: When this is set, the result could take longer to generate,
* but should be more thorough. E.g. get the list of generators for ApiSandBox extension
* @since 1.21
*/
public const GET_VALUES_FOR_HELP = 1;
/** @var array Maps extension paths to info arrays */
private static $extensionInfo = null;
/** @var stdClass[][] Cache for self::filterIDs() */
private static $filterIDsCache = [];
/** @var array Map of web UI block messages which magically gain machine-readable block info */
private const BLOCK_CODE_MAP = [
'blockedtext' => true,
'blockedtext-partial' => true,
'autoblockedtext' => true,
'systemblockedtext' => true,
'blockedtext-composite' => true,
'blockedtext-tempuser' => true,
'autoblockedtext-tempuser' => true,
];
/** @var array Map of web UI block messages to corresponding API messages and codes */
private const MESSAGE_CODE_MAP = [
'actionthrottled' => [ 'apierror-ratelimited', 'ratelimited' ],
'actionthrottledtext' => [ 'apierror-ratelimited', 'ratelimited' ],
];
/** @var ApiMain */
private $mMainModule;
// Adding inline type hints for these two fields is non-trivial because
// of tests that create mocks for ApiBase subclasses and use
// disableOriginalConstructor(): in those cases the constructor here is never
// hit and thus these will be empty and any uses will raise a "Typed property
// must not be accessed before initialization" error.
/** @var string */
private $mModuleName;
/** @var string */
private $mModulePrefix;
/** @var IReadableDatabase|null */
private $mReplicaDB = null;
/**
* @var array
*/
private $mParamCache = [];
/** @var array|null|false */
private $mModuleSource = false;
/**
* @stable to call
* @param ApiMain $mainModule
* @param string $moduleName Name of this module
* @param string $modulePrefix Prefix to use for parameter names
*/
public function __construct( ApiMain $mainModule, string $moduleName, string $modulePrefix = '' ) {
$this->mMainModule = $mainModule;
$this->mModuleName = $moduleName;
$this->mModulePrefix = $modulePrefix;
if ( !$this->isMain() ) {
$this->setContext( $mainModule->getContext() );
}
}
/***************************************************************************/
// region Methods to implement
/** @name Methods to implement */
/**
* Evaluates the parameters, performs the requested query, and sets up
* the result. Concrete implementations of ApiBase must override this
* method to provide whatever functionality their module offers.
* Implementations must not produce any output on their own and are not
* expected to handle any errors.
*
* The execute() method will be invoked directly by ApiMain immediately
* before the result of the module is output. Aside from the
* constructor, implementations should assume that no other methods
* will be called externally on the module before the result is
* processed.
*
* The result data should be stored in the ApiResult object available
* through getResult().
*/
abstract public function execute();
/**
* Get the module manager, or null if this module has no submodules.
*
* @since 1.21
* @stable to override
* @return ApiModuleManager|null
*/
public function getModuleManager() {
return null;
}
/**
* If the module may only be used with a certain format module,
* it should override this method to return an instance of that formatter.
* A value of null means the default format will be used.
*
* @note Do not use this just because you don't want to support non-json
* formats. This should be used only when there is a fundamental
* requirement for a specific format.
*
* @stable to override
* @return ApiFormatBase|null An instance of a class derived from ApiFormatBase, or null
*/
public function getCustomPrinter() {
return null;
}
/**
* Returns usage examples for this module.
*
* Return value has query strings as keys, with values being either strings
* (message key), arrays (message key + parameter), or Message objects.
*
* Do not call this base class implementation when overriding this method.
*
* @since 1.25
* @stable to override
* @return array
*/
protected function getExamplesMessages() {
return [];
}
/**
* Return links to more detailed help pages about the module.
*
* @since 1.25, returning boolean false is deprecated
* @stable to override
* @return string|array
*/
public function getHelpUrls() {
return [];
}
/**
* Returns an array of allowed parameters (parameter name) => (default
* value) or (parameter name) => (array with PARAM_* constants as keys)
* Don't call this function directly: use getFinalParams() to allow
* hooks to modify parameters as needed.
*
* Some derived classes may choose to handle an integer $flags parameter
* in the overriding methods. Callers of this method can pass zero or
* more OR-ed flags like GET_VALUES_FOR_HELP.
*
* @stable to override
* @return array
*/
protected function getAllowedParams( /* $flags = 0 */ ) {
// $flags is not declared because it causes "Strict standards"
// warning. Most derived classes do not implement it.
return [];
}
/**
* Indicates if this module needs maxlag to be checked.
*
* @stable to override
* @return bool
*/
public function shouldCheckMaxlag() {
return true;
}
/**
* Indicates whether this module requires read rights.
*
* @stable to override
* @return bool
*/
public function isReadMode() {
return true;
}
/**
* Indicates whether this module requires write access to the wiki.
*
* API modules must override this method to return true if the operation they will
* perform is not "safe" per RFC 7231 section 4.2.1. A module's operation is "safe"
* if it is essentially read-only, i.e. the client does not request nor expect any
* state change that would be observable in the responses to future requests.
*
* Implementations of this method must always return the same value, regardless of
* the parameters passed to the constructor or system state.
*
* Modules that do not require POST requests should only perform "safe" operations.
* Note that some modules might require POST requests because they need to support
* large input parameters and not because they perform non-"safe" operations.
*
* The information provided by this method is used to perform authorization checks.
* It can also be used to enforce proper routing of supposedly "safe" POST requests
* to the closest datacenter via the Promise-Non-Write-API-Action header.
*
* @see mustBePosted()
* @see needsToken()
*
* @stable to override
* @return bool
*/
public function isWriteMode() {
return false;
}
/**
* Indicates whether this module must be called with a POST request.
*
* Implementations of this method must always return the same value,
* regardless of the parameters passed to the constructor or system state.
*
* @stable to override
* @return bool
*/
public function mustBePosted() {
return $this->needsToken() !== false;
}
/**
* Indicates whether this module is deprecated.
*
* @since 1.25
* @stable to override
* @return bool
*/
public function isDeprecated() {
return false;
}
/**
* Indicates whether this module is considered to be "internal".
*
* Internal API modules are not (yet) intended for 3rd party use and may be unstable.
*
* @since 1.25
* @stable to override
* @return bool
*/
public function isInternal() {
return false;
}
/**
* Returns the token type this module requires in order to execute.
*
* Modules are strongly encouraged to use the core 'csrf' type unless they
* have specialized security needs. If the token type is not one of the
* core types, you must use the ApiQueryTokensRegisterTypes hook to
* register it.
*
* Returning a non-falsey value here will force the addition of an
* appropriate 'token' parameter in self::getFinalParams(). Also,
* self::mustBePosted() must return true when tokens are used.
*
* In previous versions of MediaWiki, true was a valid return value.
* Returning true will generate errors indicating that the API module needs
* updating.
*
* @stable to override
* @return string|false
*/
public function needsToken() {
return false;
}
/**
* Fetch the salt used in the Web UI corresponding to this module.
*
* Only override this if the Web UI uses a token with a non-constant salt.
*
* @since 1.24
* @param array $params All supplied parameters for the module
* @stable to override
* @return string|array|null
*/
protected function getWebUITokenSalt( array $params ) {
return null;
}
/**
* Returns data for HTTP conditional request mechanisms.
*
* @since 1.26
* @stable to override
* @param string $condition Condition being queried:
* - last-modified: Return a timestamp representing the maximum of the
* last-modified dates for all resources involved in the request. See
* RFC 7232 § 2.2 for semantics.
* - etag: Return an entity-tag representing the state of all resources involved
* in the request. Quotes must be included. See RFC 7232 § 2.3 for semantics.
* @return string|bool|null As described above, or null if no value is available.
*/
public function getConditionalRequestData( $condition ) {
return null;
}
// endregion -- end of methods to implement
/***************************************************************************/
// region Data access methods
/** @name Data access methods */
/**
* Get the name of the module being executed by this instance.
*
* @return string
*/
public function getModuleName() {
return $this->mModuleName;
}
/**
* Get parameter prefix (usually two letters or an empty string).
*
* @return string
*/
public function getModulePrefix() {
return $this->mModulePrefix;
}
/**
* Get the main module.
*
* @return ApiMain
*/
public function getMain() {
return $this->mMainModule;
}
/**
* Returns true if this module is the main module ($this === $this->mMainModule),
* false otherwise.
*
* @return bool
*/
public function isMain() {
return $this === $this->mMainModule;
}
/**
* Get the parent of this module.
*
* @stable to override
* @since 1.25
* @return ApiBase|null
*/
public function getParent() {
return $this->isMain() ? null : $this->getMain();
}
/**
* Used to avoid infinite loops - the ApiMain class should override some
* methods, if it doesn't and uses the default ApiBase implementation, which
* just calls the same method for the ApiMain instance, it'll lead to an infinite loop
*
* @param string $methodName used for debug messages
*/
private function dieIfMain( string $methodName ) {
if ( $this->isMain() ) {
self::dieDebug( $methodName, 'base method was called on main module.' );
}
}
/**
* Returns true if the current request breaks the same-origin policy.
*
* For example, json with callbacks.
*
* https://en.wikipedia.org/wiki/Same-origin_policy
*
* @since 1.25
* @return bool
*/
public function lacksSameOriginSecurity() {
// The Main module has this method overridden, avoid infinite loops
$this->dieIfMain( __METHOD__ );
return $this->getMain()->lacksSameOriginSecurity();
}
/**
* Get the path to this module.
*
* @since 1.25
* @return string
*/
public function getModulePath() {
if ( $this->isMain() ) {
return 'main';
}
if ( $this->getParent()->isMain() ) {
return $this->getModuleName();
}
return $this->getParent()->getModulePath() . '+' . $this->getModuleName();
}
/**
* Get a module from its module path.
*
* @since 1.25
* @param string $path
* @return ApiBase|null
* @throws ApiUsageException
*/
public function getModuleFromPath( $path ) {
$module = $this->getMain();
if ( $path === 'main' ) {
return $module;
}
$parts = explode( '+', $path );
if ( count( $parts ) === 1 ) {
// In case the '+' was typed into URL, it resolves as a space
$parts = explode( ' ', $path );
}
foreach ( $parts as $i => $v ) {
$parent = $module;
$manager = $parent->getModuleManager();
if ( $manager === null ) {
$errorPath = implode( '+', array_slice( $parts, 0, $i ) );
$this->dieWithError( [ 'apierror-badmodule-nosubmodules', $errorPath ], 'badmodule' );
}
$module = $manager->getModule( $v );
if ( $module === null ) {
$errorPath = $i
? implode( '+', array_slice( $parts, 0, $i ) )
: $parent->getModuleName();
$this->dieWithError(
[ 'apierror-badmodule-badsubmodule', $errorPath, wfEscapeWikiText( $v ) ],
'badmodule'
);
}
}
return $module;
}
/**
* Get the result object.
*
* @return ApiResult
*/
public function getResult() {
// The Main module has this method overridden, avoid infinite loops
$this->dieIfMain( __METHOD__ );
return $this->getMain()->getResult();
}
/**
* @stable to override
* @return ApiErrorFormatter
*/
public function getErrorFormatter() {
// The Main module has this method overridden, avoid infinite loops
$this->dieIfMain( __METHOD__ );
return $this->getMain()->getErrorFormatter();
}
/**
* Gets a default replica DB connection object.
*
* @stable to override
* @return IReadableDatabase
*/
protected function getDB() {
if ( !isset( $this->mReplicaDB ) ) {
$this->mReplicaDB = MediaWikiServices::getInstance()
->getConnectionProvider()
->getReplicaDatabase( false, 'api' );
}
return $this->mReplicaDB;
}
/**
* @return ApiContinuationManager|null
*/
public function getContinuationManager() {
// The Main module has this method overridden, avoid infinite loops
$this->dieIfMain( __METHOD__ );
return $this->getMain()->getContinuationManager();
}
/**
* @param ApiContinuationManager|null $manager
*/
public function setContinuationManager( ?ApiContinuationManager $manager = null ) {
// The Main module has this method overridden, avoid infinite loops
$this->dieIfMain( __METHOD__ );
$this->getMain()->setContinuationManager( $manager );
}
/**
* Obtain a PermissionManager instance that subclasses may use in their authorization checks.
*
* @since 1.34
* @return PermissionManager
*/
protected function getPermissionManager(): PermissionManager {
return MediaWikiServices::getInstance()->getPermissionManager();
}
/**
* Get a HookContainer, for running extension hooks or for hook metadata.
*
* @since 1.35
* @return HookContainer
*/
protected function getHookContainer() {
if ( !$this->hookContainer ) {
$this->hookContainer = MediaWikiServices::getInstance()->getHookContainer();
}
return $this->hookContainer;
}
/**
* Get an ApiHookRunner for running core API hooks.
*
* @internal This is for use by core only. Hook interfaces may be removed
* without notice.
* @since 1.35
* @return ApiHookRunner
*/
protected function getHookRunner() {
if ( !$this->hookRunner ) {
$this->hookRunner = new ApiHookRunner( $this->getHookContainer() );
}
return $this->hookRunner;
}
// endregion -- end of data access methods
/***************************************************************************/
// region Parameter handling
/** @name Parameter handling */
/**
* Indicate if the module supports dynamically-determined parameters that
* cannot be included in self::getAllowedParams().
* @stable to override
* @return string|array|Message|null Return null if the module does not
* support additional dynamic parameters, otherwise return a message
* describing them.
* See Message::newFromSpecifier() for a description of allowed values.
*/
public function dynamicParameterDocumentation() {
return null;
}
/**
* This method mangles parameter name based on the prefix supplied to the constructor.
* Override this method to change parameter name during runtime.
*
* @param string|string[] $paramName Parameter name
* @return string|string[] Prefixed parameter name
* @since 1.29 accepts an array of strings
*/
public function encodeParamName( $paramName ) {
if ( is_array( $paramName ) ) {
return array_map( function ( $name ) {
return $this->mModulePrefix . $name;
}, $paramName );
}
return $this->mModulePrefix . $paramName;
}
/**
* Using getAllowedParams(), this function makes an array of the values
* provided by the user, with the key being the name of the variable, and
* value - validated value from user or default. limits will not be
* parsed if $parseLimit is set to false; use this when the max
* limit is not definitive yet, e.g. when getting revisions.
* @param bool|array $options If a boolean, uses that as the value for 'parseLimit'
* - parseLimit: (bool, default true) Whether to parse the 'max' value for limit types
* - safeMode: (bool, default false) If true, avoid throwing for parameter validation errors.
* Returned parameter values might be ApiUsageException instances.
* @return array
*/
public function extractRequestParams( $options = [] ) {
if ( is_bool( $options ) ) {
$options = [ 'parseLimit' => $options ];
}
$options += [
'parseLimit' => true,
'safeMode' => false,
];
// @phan-suppress-next-line PhanTypePossiblyInvalidDimOffset False positive
$parseLimit = (bool)$options['parseLimit'];
$cacheKey = (int)$parseLimit;
// Cache parameters, for performance and to avoid T26564.
if ( !isset( $this->mParamCache[$cacheKey] ) ) {
$params = $this->getFinalParams() ?: [];
$results = [];
$warned = [];
// Process all non-templates and save templates for secondary
// processing.
$toProcess = [];
foreach ( $params as $paramName => $paramSettings ) {
if ( isset( $paramSettings[self::PARAM_TEMPLATE_VARS] ) ) {
$toProcess[] = [ $paramName, $paramSettings[self::PARAM_TEMPLATE_VARS], $paramSettings ];
} else {
try {
$results[$paramName] = $this->getParameterFromSettings(
$paramName, $paramSettings, $parseLimit
);
} catch ( ApiUsageException $ex ) {
$results[$paramName] = $ex;
}
}
}
// Now process all the templates by successively replacing the
// placeholders with all client-supplied values.
// This bit duplicates JavaScript logic in
// ApiSandbox.PageLayout.prototype.updateTemplatedParams().
// If you update this, see if that needs updating too.
while ( $toProcess ) {
[ $name, $targets, $settings ] = array_shift( $toProcess );
foreach ( $targets as $placeholder => $target ) {
if ( !array_key_exists( $target, $results ) ) {
// The target wasn't processed yet, try the next one.
// If all hit this case, the parameter has no expansions.
continue;
}
if ( !is_array( $results[$target] ) || !$results[$target] ) {
// The target was processed but has no (valid) values.
// That means it has no expansions.
break;
}
// Expand this target in the name and all other targets,
// then requeue if there are more targets left or put in
// $results if all are done.
unset( $targets[$placeholder] );
$placeholder = '{' . $placeholder . '}';
// @phan-suppress-next-line PhanTypeNoAccessiblePropertiesForeach
foreach ( $results[$target] as $value ) {
if ( !preg_match( '/^[^{}]*$/', $value ) ) {
// Skip values that make invalid parameter names.
$encTargetName = $this->encodeParamName( $target );
if ( !isset( $warned[$encTargetName][$value] ) ) {
$warned[$encTargetName][$value] = true;
$this->addWarning( [
'apiwarn-ignoring-invalid-templated-value',
wfEscapeWikiText( $encTargetName ),
wfEscapeWikiText( $value ),
] );
}
continue;
}
$newName = str_replace( $placeholder, $value, $name );
if ( !$targets ) {
try {
$results[$newName] = $this->getParameterFromSettings(
$newName,
$settings,
$parseLimit
);
} catch ( ApiUsageException $ex ) {
$results[$newName] = $ex;
}
} else {
$newTargets = [];
foreach ( $targets as $k => $v ) {
$newTargets[$k] = str_replace( $placeholder, $value, $v );
}
$toProcess[] = [ $newName, $newTargets, $settings ];
}
}
break;
}
}
$this->mParamCache[$cacheKey] = $results;
}
$ret = $this->mParamCache[$cacheKey];
if ( !$options['safeMode'] ) {
foreach ( $ret as $v ) {
if ( $v instanceof ApiUsageException ) {
throw $v;
}
}
}
return $this->mParamCache[$cacheKey];
}
/**
* Get a value for the given parameter.
*
* @param string $paramName Parameter name
* @param bool $parseLimit See extractRequestParams()
* @return mixed Parameter value
*/
protected function getParameter( $paramName, $parseLimit = true ) {
$ret = $this->extractRequestParams( [
'parseLimit' => $parseLimit,
'safeMode' => true,
] )[$paramName];
if ( $ret instanceof ApiUsageException ) {
throw $ret;
}
return $ret;
}
/**
* Die if 0 or more than one of a certain set of parameters is set and not false.
*
* @param array $params User provided parameter set, as from $this->extractRequestParams()
* @param string ...$required Names of parameters of which exactly one must be set
*/
public function requireOnlyOneParameter( $params, ...$required ) {
$intersection = array_intersect( array_keys( array_filter( $params,
[ $this, 'parameterNotEmpty' ] ) ), $required );
if ( count( $intersection ) > 1 ) {
$this->dieWithError( [
'apierror-invalidparammix',
Message::listParam( array_map(
function ( $p ) {
return '<var>' . $this->encodeParamName( $p ) . '</var>';
},
array_values( $intersection )
) ),
count( $intersection ),
] );
} elseif ( count( $intersection ) == 0 ) {
$this->dieWithError( [
'apierror-missingparam-one-of',
Message::listParam( array_map(
function ( $p ) {
return '<var>' . $this->encodeParamName( $p ) . '</var>';
},
$required
) ),
count( $required ),
], 'missingparam' );
}
}
/**
* Dies if more than one parameter from a certain set of parameters are set and not false.
*
* @param array $params User provided parameters set, as from $this->extractRequestParams()
* @param string ...$required Parameter names that cannot have more than one set
*/
public function requireMaxOneParameter( $params, ...$required ) {
$intersection = array_intersect( array_keys( array_filter( $params,
[ $this, 'parameterNotEmpty' ] ) ), $required );
if ( count( $intersection ) > 1 ) {
$this->dieWithError( [
'apierror-invalidparammix',
Message::listParam( array_map(
function ( $p ) {
return '<var>' . $this->encodeParamName( $p ) . '</var>';
},
array_values( $intersection )
) ),
count( $intersection ),
] );
}
}
/**
* Die if 0 of a certain set of parameters is set and not false.
*
* @since 1.23
* @param array $params User provided parameters set, as from $this->extractRequestParams()
* @param string ...$required Names of parameters of which at least one must be set
*/
public function requireAtLeastOneParameter( $params, ...$required ) {
$intersection = array_intersect(
array_keys( array_filter( $params, [ $this, 'parameterNotEmpty' ] ) ),
$required
);
if ( count( $intersection ) == 0 ) {
$this->dieWithError( [
'apierror-missingparam-at-least-one-of',
Message::listParam( array_map(
function ( $p ) {
return '<var>' . $this->encodeParamName( $p ) . '</var>';
},
$required
) ),
count( $required ),
], 'missingparam' );
}
}
/**
* Die if any of the specified parameters were found in the query part of
* the URL rather than the HTTP post body contents.
*
* @since 1.28
* @param string[] $params Parameters to check
* @param string $prefix Set to 'noprefix' to skip calling $this->encodeParamName()
*/
public function requirePostedParameters( $params, $prefix = 'prefix' ) {
if ( !$this->mustBePosted() ) {
// In order to allow client code to choose the correct method (GET or POST) depending *only*
// on mustBePosted(), make sure that the module requires posting if any of its potential
// parameters require posting.
// TODO: Uncomment this
// throw new LogicException( 'mustBePosted() must be true when using requirePostedParameters()' );
// This seems to already be the case in all modules in practice, but deprecate it first just
// in case.
wfDeprecatedMsg( 'mustBePosted() must be true when using requirePostedParameters()',
'1.42' );
}
// Skip if $wgDebugAPI is set, or if we're in internal mode
if ( $this->getConfig()->get( MainConfigNames::DebugAPI ) ||
$this->getMain()->isInternalMode() ) {
return;
}
$queryValues = $this->getRequest()->getQueryValuesOnly();
$badParams = [];
foreach ( $params as $param ) {
if ( $prefix !== 'noprefix' ) {
$param = $this->encodeParamName( $param );
}
if ( array_key_exists( $param, $queryValues ) ) {
$badParams[] = $param;
}
}
if ( $badParams ) {
$this->dieWithError(
[ 'apierror-mustpostparams', implode( ', ', $badParams ), count( $badParams ) ]
);
}
}
/**
* Callback function used in requireOnlyOneParameter to check whether required parameters are set.
*
* @param mixed $x Parameter to check is not null/false
* @return bool
*/
private function parameterNotEmpty( $x ) {
return $x !== null && $x !== false;
}
/**
* Attempts to load a WikiPage object from a title or pageid parameter, if possible.
* It can die if no param is set or if the title or page ID is not valid.
*
* @param array $params User provided parameter set, as from $this->extractRequestParams()
* @param string|false $load Whether load the object's state from the database:
* - false: don't load (if the pageid is given, it will still be loaded)
* - 'fromdb': load from a replica DB
* - 'fromdbmaster': load from the primary database
* @return WikiPage
*/
public function getTitleOrPageId( $params, $load = false ) {
$this->requireOnlyOneParameter( $params, 'title', 'pageid' );
$pageObj = null;
if ( isset( $params['title'] ) ) {
$titleObj = Title::newFromText( $params['title'] );
if ( !$titleObj || $titleObj->isExternal() ) {
$this->dieWithError( [ 'apierror-invalidtitle', wfEscapeWikiText( $params['title'] ) ] );
}
if ( !$titleObj->canExist() ) {
$this->dieWithError( 'apierror-pagecannotexist' );
}
// @phan-suppress-next-line PhanTypeMismatchArgumentNullable T240141
$pageObj = MediaWikiServices::getInstance()->getWikiPageFactory()->newFromTitle( $titleObj );
if ( $load !== false ) {
$pageObj->loadPageData( $load );
}
} elseif ( isset( $params['pageid'] ) ) {
if ( $load === false ) {
$load = 'fromdb';
}
$pageObj = MediaWikiServices::getInstance()->getWikiPageFactory()->newFromID( $params['pageid'], $load );
if ( !$pageObj ) {
$this->dieWithError( [ 'apierror-nosuchpageid', $params['pageid'] ] );
}
}
// @phan-suppress-next-line PhanTypeMismatchReturnNullable requireOnlyOneParameter guard it is always set
return $pageObj;
}
/**
* Get a Title object from a title or pageid param, if it is possible.
* It can die if no param is set or if the title or page ID is not valid.
*
* @since 1.29
* @param array $params User provided parameter set, as from $this->extractRequestParams()
* @return Title
*/
public function getTitleFromTitleOrPageId( $params ) {
$this->requireOnlyOneParameter( $params, 'title', 'pageid' );
$titleObj = null;
if ( isset( $params['title'] ) ) {
$titleObj = Title::newFromText( $params['title'] );
if ( !$titleObj || $titleObj->isExternal() ) {
$this->dieWithError( [ 'apierror-invalidtitle', wfEscapeWikiText( $params['title'] ) ] );
}
// @phan-suppress-next-line PhanTypeMismatchReturnNullable T240141
return $titleObj;
}
if ( isset( $params['pageid'] ) ) {
$titleObj = Title::newFromID( $params['pageid'] );
if ( !$titleObj ) {
$this->dieWithError( [ 'apierror-nosuchpageid', $params['pageid'] ] );
}
}
// @phan-suppress-next-line PhanTypeMismatchReturnNullable requireOnlyOneParameter guard it is always set
return $titleObj;
}
/**
* Using the settings, determine the value for the given parameter.
*
* @param string $name Parameter name
* @param array|mixed $settings Default value or an array of settings
* using PARAM_* constants.
* @param bool $parseLimit Whether to parse and validate 'limit' parameters
* @return mixed Parameter value
*/
protected function getParameterFromSettings( $name, $settings, $parseLimit ) {
$validator = $this->getMain()->getParamValidator();
$value = $validator->getValue( $this, $name, $settings, [
'parse-limit' => $parseLimit,
'raw' => ( $settings[ParamValidator::PARAM_TYPE] ?? '' ) === 'raw',
] );
// @todo Deprecate and remove this, if possible.
if ( $parseLimit && isset( $settings[ParamValidator::PARAM_TYPE] ) &&
$settings[ParamValidator::PARAM_TYPE] === 'limit' &&
$this->getMain()->getVal( $this->encodeParamName( $name ) ) === 'max'
) {
$this->getResult()->addParsedLimit( $this->getModuleName(), $value );
}
return $value;
}
/**
* Handle when a parameter was Unicode-normalized.
*
* @since 1.28
* @since 1.35 $paramName is prefixed
* @internal For overriding by subclasses and use by ApiParamValidatorCallbacks only.
* @param string $paramName Prefixed parameter name
* @param string $value Input that will be used.
* @param string $rawValue Input before normalization.
*/
public function handleParamNormalization( $paramName, $value, $rawValue ) {
$this->addWarning( [ 'apiwarn-badutf8', $paramName ] );
}
/**
* Validate the supplied token.
*
* @since 1.24
* @param string $token Supplied token
* @param array $params All supplied parameters for the module
* @return bool
*/
final public function validateToken( $token, array $params ) {
$tokenType = $this->needsToken();
$salts = ApiQueryTokens::getTokenTypeSalts();
if ( !isset( $salts[$tokenType] ) ) {
throw new LogicException(
"Module '{$this->getModuleName()}' tried to use token type '$tokenType' " .
'without registering it'
);
}
$tokenObj = ApiQueryTokens::getToken(
$this->getUser(), $this->getRequest()->getSession(), $salts[$tokenType]
);
if ( $tokenObj->match( $token ) ) {
return true;
}
$webUiSalt = $this->getWebUITokenSalt( $params );
return $webUiSalt !== null && $this->getUser()->matchEditToken(
$token, $webUiSalt, $this->getRequest()
);
}
// endregion -- end of parameter handling
/***************************************************************************/
// region Utility methods
/** @name Utility methods */
/**
* Gets the user for whom to get the watchlist
*
* @param array $params
* @return User
*/
public function getWatchlistUser( $params ) {
if ( $params['owner'] !== null && $params['token'] !== null ) {
$services = MediaWikiServices::getInstance();
$user = $services->getUserFactory()->newFromName( $params['owner'], UserRigorOptions::RIGOR_NONE );
if ( !$user || !$user->isRegistered() ) {
$this->dieWithError(
[ 'nosuchusershort', wfEscapeWikiText( $params['owner'] ) ], 'bad_wlowner'
);
}
// @phan-suppress-next-line PhanTypeMismatchArgumentNullable T240141
$token = $services->getUserOptionsLookup()->getOption( $user, 'watchlisttoken' );
if ( $token == '' || !hash_equals( $token, $params['token'] ) ) {
$this->dieWithError( 'apierror-bad-watchlist-token', 'bad_wltoken' );
}
} else {
$user = $this->getUser();
if ( !$user->isRegistered() ) {
$this->dieWithError( 'watchlistanontext', 'notloggedin' );
}
$this->checkUserRightsAny( 'viewmywatchlist' );
}
// @phan-suppress-next-line PhanTypeMismatchReturnNullable T240141
return $user;
}
/**
* Create a Message from a string or array
*
* A string is used as a message key. An array has the message key as the
* first value and message parameters as subsequent values.
*
* @since 1.25
* @deprecated since 1.43, use ApiBase::msg()
* @param string|array|Message $msg
* @phan-param string|non-empty-array|Message $msg
* @param IContextSource $context
* @param array|null $params
* @return Message|null
*/
public static function makeMessage( $msg, IContextSource $context, ?array $params = null ) {
wfDeprecated( __METHOD__, '1.43' );
if ( is_string( $msg ) ) {
$msg = wfMessage( $msg );
} elseif ( is_array( $msg ) ) {
$msg = wfMessage( ...$msg );
}
if ( !$msg instanceof Message ) {
return null;
}
$msg->setContext( $context );
if ( $params ) {
$msg->params( $params );
}
return $msg;
}
/**
* Turn an array of messages into a Status.
*
* @deprecated since 1.43 Use methods that return StatusValue objects directly,
* such as PermissionManager::getPermissionStatus().
*
* @see ApiMessage::create
*
* @since 1.29
* @param array $errors A list of message keys, MessageSpecifier objects,
* or arrays containing the message key and parameters.
* @param Authority|null $performer
* @return Status
*/
public function errorArrayToStatus( array $errors, ?Authority $performer = null ) {
wfDeprecated( __METHOD__, '1.43' );
$performer ??= $this->getAuthority();
$block = $performer->getBlock();
$status = Status::newGood();
foreach ( $errors as $error ) {
if ( !is_array( $error ) ) {
$error = [ $error ];
}
$head = reset( $error );
$key = ( $head instanceof MessageSpecifier ) ? $head->getKey() : (string)$head;
if ( isset( self::BLOCK_CODE_MAP[$key] ) && $block ) {
$status->fatal( ApiMessage::create(
$error,
$this->getBlockCode( $block ),
[ 'blockinfo' => $this->getBlockDetails( $block ) ]
) );
} elseif ( isset( self::MESSAGE_CODE_MAP[$key] ) ) {
[ $msg, $code ] = self::MESSAGE_CODE_MAP[$key];
$status->fatal( ApiMessage::create( $msg, $code ) );
} else {
// @phan-suppress-next-line PhanParamTooFewUnpack
$status->fatal( ...$error );
}
}
return $status;
}
/**
* Add block info to block messages in a Status
* @since 1.33
* @internal since 1.37, should become protected in the future.
* @param StatusValue $status
* @param Authority|null $user
*/
public function addBlockInfoToStatus( StatusValue $status, ?Authority $user = null ) {
if ( $status instanceof PermissionStatus ) {
$block = $status->getBlock();
} else {
$user = $user ?: $this->getAuthority();
$block = $user->getBlock();
}
if ( !$block ) {
return;
}
foreach ( $status->getMessages() as $msg ) {
if ( isset( self::BLOCK_CODE_MAP[$msg->getKey()] ) ) {
$status->replaceMessage( $msg->getKey(), ApiMessage::create(
Message::newFromSpecifier( $msg ),
$this->getBlockCode( $block ),
[ 'blockinfo' => $this->getBlockDetails( $block ) ]
) );
}
}
}
/**
* Call wfTransactionalTimeLimit() if this request was POSTed.
*
* @since 1.26
*/
protected function useTransactionalTimeLimit() {
if ( $this->getRequest()->wasPosted() ) {
wfTransactionalTimeLimit();
}
}
/**
* Reset static caches of database state.
*
* @internal For testing only
*/
public static function clearCacheForTest(): void {
if ( !defined( 'MW_PHPUNIT_TEST' ) ) {
throw new LogicException( 'Not allowed outside tests' );
}
self::$filterIDsCache = [];
}
/**
* Filter out-of-range values from a list of positive integer IDs
*
* @since 1.33
* @param string[][] $fields Array of table and field pairs to check
* @param (string|int)[] $ids IDs to filter. Strings in the array are
* expected to be stringified integers.
* @return (string|int)[] Filtered IDs.
*/
protected function filterIDs( $fields, array $ids ) {
$min = INF;
$max = 0;
foreach ( $fields as [ $table, $field ] ) {
if ( isset( self::$filterIDsCache[$table][$field] ) ) {
$row = self::$filterIDsCache[$table][$field];
} else {
$row = $this->getDB()->newSelectQueryBuilder()
->select( [ 'min_id' => "MIN($field)", 'max_id' => "MAX($field)" ] )
->from( $table )
->caller( __METHOD__ )->fetchRow();
self::$filterIDsCache[$table][$field] = $row;
}
$min = min( $min, $row->min_id );
$max = max( $max, $row->max_id );
}
return array_filter( $ids, static function ( $id ) use ( $min, $max ) {
return ( ( is_int( $id ) && $id >= 0 ) || ctype_digit( (string)$id ) )
&& $id >= $min && $id <= $max;
} );
}
// endregion -- end of utility methods
/***************************************************************************/
// region Warning and error reporting
/** @name Warning and error reporting */
/**
* Add a warning for this module.
*
* Users should monitor this section to notice any changes in the API.
*
* Multiple calls to this function will result in multiple warning messages.
*
* If $msg is not an ApiMessage, the message code will be derived from the
* message key by stripping any "apiwarn-" or "apierror-" prefix.
*
* @since 1.29
* @param string|array|MessageSpecifier $msg See ApiErrorFormatter::addWarning()
* @param string|null $code See ApiErrorFormatter::addWarning()
* @param array|null $data See ApiErrorFormatter::addWarning()
*/
public function addWarning( $msg, $code = null, $data = null ) {
$this->getErrorFormatter()->addWarning( $this->getModulePath(), $msg, $code, $data );
}
/**
* Add a deprecation warning for this module.
*
* A combination of $this->addWarning() and $this->logFeatureUsage()
*
* @since 1.29
* @param string|array|MessageSpecifier $msg See ApiErrorFormatter::addWarning()
* @param string|null $feature See ApiBase::logFeatureUsage()
* @param array|null $data See ApiErrorFormatter::addWarning()
*/
public function addDeprecation( $msg, $feature, $data = [] ) {
$data = (array)$data;
if ( $feature !== null ) {
$data['feature'] = $feature;
$this->logFeatureUsage( $feature );
}
$this->addWarning( $msg, 'deprecation', $data );
// No real need to deduplicate here, ApiErrorFormatter does that for
// us (assuming the hook is deterministic).
$msgs = [ $this->msg( 'api-usage-mailinglist-ref' ) ];
$this->getHookRunner()->onApiDeprecationHelp( $msgs );
if ( count( $msgs ) > 1 ) {
$key = '$' . implode( ' $', range( 1, count( $msgs ) ) );
$msg = ( new RawMessage( $key ) )->params( $msgs );
} else {
$msg = reset( $msgs );
}
$this->getMain()->addWarning( $msg, 'deprecation-help' );
}
/**
* Add an error for this module without aborting
*
* If $msg is not an ApiMessage, the message code will be derived from the
* message key by stripping any "apiwarn-" or "apierror-" prefix.
*
* @note If you want to abort processing, use self::dieWithError() instead.
* @since 1.29
* @param string|array|MessageSpecifier $msg See ApiErrorFormatter::addError()
* @param string|null $code See ApiErrorFormatter::addError()
* @param array|null $data See ApiErrorFormatter::addError()
*/
public function addError( $msg, $code = null, $data = null ) {
$this->getErrorFormatter()->addError( $this->getModulePath(), $msg, $code, $data );
}
/**
* Add warnings and/or errors from a Status
*
* @note If you want to abort processing, use self::dieStatus() instead.
* @since 1.29
* @param StatusValue $status
* @param string[] $types 'warning' and/or 'error'
* @param string[] $filter Message keys to filter out (since 1.33)
*/
public function addMessagesFromStatus(
StatusValue $status, $types = [ 'warning', 'error' ], array $filter = []
) {
$this->getErrorFormatter()->addMessagesFromStatus(
$this->getModulePath(), $status, $types, $filter
);
}
/**
* Abort execution with an error
*
* If $msg is not an ApiMessage, the message code will be derived from the
* message key by stripping any "apiwarn-" or "apierror-" prefix.
*
* @since 1.29
* @param string|array|MessageSpecifier $msg See ApiErrorFormatter::addError()
* @param string|null $code See ApiErrorFormatter::addError()
* @param array|null $data See ApiErrorFormatter::addError()
* @param int $httpCode HTTP error code to use
* @throws ApiUsageException always
* @return never
*/
public function dieWithError( $msg, $code = null, $data = null, $httpCode = 0 ) {
throw ApiUsageException::newWithMessage( $this, $msg, $code, $data, $httpCode );
}
/**
* Abort execution with an error derived from a throwable
*
* @since 1.29
* @param Throwable $exception See ApiErrorFormatter::getMessageFromException()
* @param array $options See ApiErrorFormatter::getMessageFromException()
* @throws ApiUsageException always
* @return never
*/
public function dieWithException( Throwable $exception, array $options = [] ) {
$this->dieWithError(
$this->getErrorFormatter()->getMessageFromException( $exception, $options )
);
}
/**
* Throw an ApiUsageException, which will (if uncaught) call the main module's
* error handler and die with an error message including block info.
*
* @since 1.27
* @param Block $block The block used to generate the ApiUsageException
* @throws ApiUsageException always
* @return never
*/
public function dieBlocked( Block $block ) {
$blockErrorFormatter = MediaWikiServices::getInstance()->getFormatterFactory()
->getBlockErrorFormatter( $this->getContext() );
$msg = $blockErrorFormatter->getMessage(
$block,
$this->getUser(),
null,
$this->getRequest()->getIP()
);
$this->dieWithError(
$msg,
$this->getBlockCode( $block ),
[ 'blockinfo' => $this->getBlockDetails( $block ) ]
);
}
/**
* Throw an ApiUsageException based on the Status object.
*
* @since 1.22
* @since 1.29 Accepts a StatusValue
* @param StatusValue $status
* @throws ApiUsageException always
* @return never
*/
public function dieStatus( StatusValue $status ) {
if ( $status->isGood() ) {
throw new InvalidArgumentException( 'Successful status passed to ApiBase::dieStatus' );
}
foreach ( self::MESSAGE_CODE_MAP as $msg => [ $apiMsg, $code ] ) {
if ( $status->hasMessage( $msg ) ) {
$status->replaceMessage( $msg, ApiMessage::create( $apiMsg, $code ) );
}
}
if (
$status instanceof PermissionStatus
&& $status->isRateLimitExceeded()
&& !$status->hasMessage( 'apierror-ratelimited' )
) {
$status->fatal( ApiMessage::create( 'apierror-ratelimited', 'ratelimited' ) );
}
// ApiUsageException needs a fatal status, but this method has
// historically accepted any non-good status. Convert it if necessary.
$status->setOK( false );
if ( !$status->getMessages( 'error' ) ) {
$newStatus = Status::newGood();
foreach ( $status->getMessages( 'warning' ) as $err ) {
$newStatus->fatal( $err );
}
if ( !$newStatus->getMessages( 'error' ) ) {
$newStatus->fatal( 'unknownerror-nocode' );
}
$status = $newStatus;
}
$this->addBlockInfoToStatus( $status );
throw new ApiUsageException( $this, $status );
}
/**
* Helper function for readonly errors.
*
* @throws ApiUsageException always
* @return never
*/
public function dieReadOnly() {
$this->dieWithError(
'apierror-readonly',
'readonly',
[ 'readonlyreason' => MediaWikiServices::getInstance()->getReadOnlyMode()->getReason() ]
);
}
/**
* Helper function for permission-denied errors.
*
* @since 1.29
* @param string|string[] $rights
* @throws ApiUsageException if the user doesn't have any of the rights.
* The error message is based on $rights[0].
*/
public function checkUserRightsAny( $rights ) {
$rights = (array)$rights;
if ( !$this->getAuthority()->isAllowedAny( ...$rights ) ) {
$this->dieWithError( [ 'apierror-permissiondenied', $this->msg( "action-{$rights[0]}" ) ] );
}
}
/**
* Helper function for permission-denied errors.
*
* @param PageIdentity $pageIdentity
* @param string|string[] $actions
* @param array $options Additional options
* - user: (User) User to use rather than $this->getUser().
* - autoblock: (bool, default false) Whether to spread autoblocks.
* @phan-param array{user?:User,autoblock?:bool} $options
*
* @throws ApiUsageException if the user doesn't have all the necessary rights.
*
* @since 1.29
* @since 1.33 Changed the third parameter from $user to $options.
* @since 1.36 deprecated passing LinkTarget as first parameter
*/
public function checkTitleUserPermissions(
PageIdentity $pageIdentity,
$actions,
array $options = []
) {
$authority = $options['user'] ?? $this->getAuthority();
$status = new PermissionStatus();
foreach ( (array)$actions as $action ) {
if ( $this->isWriteMode() ) {
$authority->authorizeWrite( $action, $pageIdentity, $status );
} else {
$authority->authorizeRead( $action, $pageIdentity, $status );
}
}
if ( !$status->isGood() ) {
if ( !empty( $options['autoblock'] ) ) {
$this->getUser()->spreadAnyEditBlock();
}
$this->dieStatus( $status );
}
}
/**
* Will only set a warning instead of failing if the global $wgDebugAPI
* is set to true.
*
* Otherwise, it behaves exactly as self::dieWithError().
*
* @since 1.29
* @param string|array|Message $msg Message definition, see Message::newFromSpecifier()
* @param string|null $code
* @param array|null $data
* @param int|null $httpCode
* @throws ApiUsageException
*/
public function dieWithErrorOrDebug( $msg, $code = null, $data = null, $httpCode = null ) {
if ( $this->getConfig()->get( MainConfigNames::DebugAPI ) !== true ) {
$this->dieWithError( $msg, $code, $data, $httpCode ?? 0 );
} else {
$this->addWarning( $msg, $code, $data );
}
}
/**
* Parse the 'continue' parameter in the usual format and validate the types of each part,
* or die with the 'badcontinue' error if the format, types, or the number of parts is wrong.
*
* @param string $continue Value of 'continue' parameter obtained from extractRequestParams()
* @param string[] $types Types of the expected parts in order, 'string', 'int' or 'timestamp'
* @return mixed[] Array containing strings, integers or timestamps
* @throws ApiUsageException
* @since 1.40
*/
protected function parseContinueParamOrDie( string $continue, array $types ): array {
$cont = explode( '|', $continue );
$this->dieContinueUsageIf( count( $cont ) != count( $types ) );
foreach ( $cont as $i => &$value ) {
switch ( $types[$i] ) {
case 'string':
// Do nothing
break;
case 'int':
$this->dieContinueUsageIf( $value !== (string)(int)$value );
$value = (int)$value;
break;
case 'timestamp':
try {
$dbTs = $this->getDB()->timestamp( $value );
} catch ( TimestampException $ex ) {
$dbTs = false;
}
$this->dieContinueUsageIf( $value !== $dbTs );
break;
default:
throw new InvalidArgumentException( "Unknown type '{$types[$i]}'" );
}
}
return $cont;
}
/**
* Die with the 'badcontinue' error.
*
* This call is common enough to make it into the base method.
*
* @param bool $condition Will only die if this value is true
* @throws ApiUsageException
* @since 1.21
* @phan-assert-false-condition $condition
*/
protected function dieContinueUsageIf( $condition ) {
if ( $condition ) {
$this->dieWithError( 'apierror-badcontinue' );
}
}
/**
* Internal code errors should be reported with this method.
*
* @param string $method Method or function name
* @param string $message Error message
* @return never
*/
protected static function dieDebug( $method, $message ) {
throw new MWException( "Internal error in $method: $message" );
}
/**
* Write logging information for API features to a debug log, for usage
* analysis.
*
* @note Consider using $this->addDeprecation() instead to both warn and log.
* @param string $feature Feature being used.
*/
public function logFeatureUsage( $feature ) {
static $loggedFeatures = [];
// Only log each feature once per request. We can get multiple calls from calls to
// extractRequestParams() with different values for 'parseLimit', for example.
if ( isset( $loggedFeatures[$feature] ) ) {
return;
}
$loggedFeatures[$feature] = true;
$request = $this->getRequest();
$ctx = [
'feature' => $feature,
// Replace spaces with underscores in 'username' for historical reasons.
'username' => str_replace( ' ', '_', $this->getUser()->getName() ),
'clientip' => $request->getIP(),
'referer' => (string)$request->getHeader( 'Referer' ),
'agent' => $this->getMain()->getUserAgent(),
];
// Text string is deprecated. Remove (or replace with just $feature) in MW 1.34.
$s = '"' . addslashes( $ctx['feature'] ) . '"' .
' "' . wfUrlencode( $ctx['username'] ) . '"' .
' "' . $ctx['clientip'] . '"' .
' "' . addslashes( $ctx['referer'] ) . '"' .
' "' . addslashes( $ctx['agent'] ) . '"';
wfDebugLog( 'api-feature-usage', $s, 'private', $ctx );
$this->getHookRunner()->onApiLogFeatureUsage(
$feature,
[
'userName' => $this->getUser()->getName(),
'userAgent' => $this->getMain()->getUserAgent(),
'ipAddress' => $request->getIP()
]
);
}
// endregion -- end of warning and error reporting
/***************************************************************************/
// region Help message generation
/** @name Help message generation */
/**
* Return the summary message.
*
* This is a one-line description of the module, suitable for display in a
* list of modules.
*
* @since 1.30
* @stable to override
* @return string|array|Message Message definition, see Message::newFromSpecifier()
*/
protected function getSummaryMessage() {
return "apihelp-{$this->getModulePath()}-summary";
}
/**
* Return the extended help text message.
*
* This is additional text to display at the top of the help section, below
* the summary.
*
* @since 1.30
* @stable to override
* @return string|array|Message Message definition, see Message::newFromSpecifier().
* When returning an array, the definition may also specify fallback keys.
*/
protected function getExtendedDescription() {
return [ [
"apihelp-{$this->getModulePath()}-extended-description",
'api-help-no-extended-description',
] ];
}
/**
* Get the final module summary
*
* @since 1.30
* @stable to override
* @return Message
*/
public function getFinalSummary() {
return $this->msg(
Message::newFromSpecifier( $this->getSummaryMessage() ),
$this->getModulePrefix(),
$this->getModuleName(),
$this->getModulePath(),
);
}
/**
* Get the final module description, after hooks have had a chance to tweak it as
* needed.
*
* @since 1.25, returns Message[] rather than string[]
* @return Message[]
*/
public function getFinalDescription() {
$summary = $this->msg(
Message::newFromSpecifier( $this->getSummaryMessage() ),
$this->getModulePrefix(),
$this->getModuleName(),
$this->getModulePath(),
);
$extendedDesc = $this->getExtendedDescription();
if ( is_array( $extendedDesc ) && is_array( $extendedDesc[0] ) ) {
// The definition in getExtendedDescription() may also specify fallback keys. This is weird,
// and it was never needed for other API doc messages, so it's only supported here.
$extendedDesc = Message::newFallbackSequence( $extendedDesc[0] )
->params( array_slice( $extendedDesc, 1 ) );
}
$extendedDesc = $this->msg(
Message::newFromSpecifier( $extendedDesc ),
$this->getModulePrefix(),
$this->getModuleName(),
$this->getModulePath(),
);
$msgs = [ $summary, $extendedDesc ];
$this->getHookRunner()->onAPIGetDescriptionMessages( $this, $msgs );
return $msgs;
}
/**
* Get the final list of parameters, after hooks have had a chance to
* tweak it as needed.
*
* @param int $flags Zero or more flags like GET_VALUES_FOR_HELP
* @return array
* @since 1.21 $flags param added
*/
public function getFinalParams( $flags = 0 ) {
// @phan-suppress-next-line PhanParamTooMany
$params = $this->getAllowedParams( $flags );
if ( !$params ) {
$params = [];
}
if ( $this->needsToken() ) {
$params['token'] = [
ParamValidator::PARAM_TYPE => 'string',
ParamValidator::PARAM_REQUIRED => true,
ParamValidator::PARAM_SENSITIVE => true,
self::PARAM_HELP_MSG => [
'api-help-param-token',
$this->needsToken(),
],
] + ( $params['token'] ?? [] );
}
$this->getHookRunner()->onAPIGetAllowedParams( $this, $params, $flags );
return $params;
}
/**
* Get final parameter descriptions, after hooks have had a chance to tweak it as
* needed.
*
* @since 1.25, returns array of Message[] rather than array of string[]
* @return array Keys are parameter names, values are arrays of Message objects
*/
public function getFinalParamDescription() {
$prefix = $this->getModulePrefix();
$name = $this->getModuleName();
$path = $this->getModulePath();
$params = $this->getFinalParams( self::GET_VALUES_FOR_HELP );
$msgs = [];
foreach ( $params as $param => $settings ) {
if ( !is_array( $settings ) ) {
$settings = [];
}
$msg = isset( $settings[self::PARAM_HELP_MSG] )
? Message::newFromSpecifier( $settings[self::PARAM_HELP_MSG] )
: Message::newFallbackSequence( [ "apihelp-$path-param-$param", 'api-help-param-no-description' ] );
$msg = $this->msg( $msg, $prefix, $param, $name, $path );
$msgs[$param] = [ $msg ];
if ( isset( $settings[ParamValidator::PARAM_TYPE] ) &&
$settings[ParamValidator::PARAM_TYPE] === 'submodule'
) {
if ( isset( $settings[SubmoduleDef::PARAM_SUBMODULE_MAP] ) ) {
$map = $settings[SubmoduleDef::PARAM_SUBMODULE_MAP];
} else {
$prefix = $this->isMain() ? '' : ( $this->getModulePath() . '+' );
$map = [];
foreach ( $this->getModuleManager()->getNames( $param ) as $submoduleName ) {
$map[$submoduleName] = $prefix . $submoduleName;
}
}
$submodules = [];
$submoduleFlags = []; // for sorting: higher flags are sorted later
$submoduleNames = []; // for sorting: lexicographical, ascending
foreach ( $map as $v => $m ) {
$isDeprecated = false;
$isInternal = false;
$summary = null;
try {
$submod = $this->getModuleFromPath( $m );
if ( $submod ) {
$summary = $submod->getFinalSummary();
$isDeprecated = $submod->isDeprecated();
$isInternal = $submod->isInternal();
}
} catch ( ApiUsageException $ex ) {
// Ignore
}
if ( $summary ) {
$key = $summary->getKey();
$params = $summary->getParams();
} else {
$key = 'api-help-undocumented-module';
$params = [ $m ];
}
$m = new ApiHelpParamValueMessage(
"[[Special:ApiHelp/$m|$v]]",
$key,
$params,
$isDeprecated,
$isInternal
);
$submodules[] = $m->setContext( $this->getContext() );
$submoduleFlags[] = ( $isDeprecated ? 1 : 0 ) | ( $isInternal ? 2 : 0 );
$submoduleNames[] = $v;
}
// sort $submodules by $submoduleFlags and $submoduleNames
array_multisort( $submoduleFlags, $submoduleNames, $submodules );
$msgs[$param] = array_merge( $msgs[$param], $submodules );
} elseif ( isset( $settings[self::PARAM_HELP_MSG_PER_VALUE] ) ) {
if ( !is_array( $settings[self::PARAM_HELP_MSG_PER_VALUE] ) ) {
self::dieDebug( __METHOD__,
'ApiBase::PARAM_HELP_MSG_PER_VALUE is not valid' );
}
$isArrayOfStrings = is_array( $settings[ParamValidator::PARAM_TYPE] )
|| (
$settings[ParamValidator::PARAM_TYPE] === 'string'
&& ( $settings[ParamValidator::PARAM_ISMULTI] ?? false )
);
if ( !$isArrayOfStrings ) {
self::dieDebug( __METHOD__,
'ApiBase::PARAM_HELP_MSG_PER_VALUE may only be used when ' .
'ParamValidator::PARAM_TYPE is an array or it is \'string\' and ' .
'ParamValidator::PARAM_ISMULTI is true' );
}
$values = is_array( $settings[ParamValidator::PARAM_TYPE] ) ?
$settings[ParamValidator::PARAM_TYPE] :
array_keys( $settings[self::PARAM_HELP_MSG_PER_VALUE] );
$valueMsgs = $settings[self::PARAM_HELP_MSG_PER_VALUE];
$deprecatedValues = $settings[EnumDef::PARAM_DEPRECATED_VALUES] ?? [];
foreach ( $values as $value ) {
$msg = Message::newFromSpecifier( $valueMsgs[$value] ?? "apihelp-$path-paramvalue-$param-$value" );
$m = $this->msg( $msg, [ $prefix, $param, $name, $path, $value ] );
$m = new ApiHelpParamValueMessage(
$value,
// @phan-suppress-next-line PhanTypeMismatchArgumentProbablyReal
[ $m->getKey(), 'api-help-param-no-description' ],
$m->getParams(),
isset( $deprecatedValues[$value] )
);
$msgs[$param][] = $m->setContext( $this->getContext() );
}
}
if ( isset( $settings[self::PARAM_HELP_MSG_APPEND] ) ) {
if ( !is_array( $settings[self::PARAM_HELP_MSG_APPEND] ) ) {
self::dieDebug( __METHOD__,
'Value for ApiBase::PARAM_HELP_MSG_APPEND is not an array' );
}
foreach ( $settings[self::PARAM_HELP_MSG_APPEND] as $m ) {
$m = $this->msg( Message::newFromSpecifier( $m ), [ $prefix, $param, $name, $path ] );
$msgs[$param][] = $m;
}
}
}
$this->getHookRunner()->onAPIGetParamDescriptionMessages( $this, $msgs );
return $msgs;
}
/**
* Generates the list of flags for the help screen and for action=paraminfo.
*
* Corresponding messages: api-help-flag-deprecated,
* api-help-flag-internal, api-help-flag-readrights,
* api-help-flag-writerights, api-help-flag-mustbeposted
*
* @return string[]
*/
protected function getHelpFlags() {
$flags = [];
if ( $this->isDeprecated() ) {
$flags[] = 'deprecated';
}
if ( $this->isInternal() ) {
$flags[] = 'internal';
}
if ( $this->isReadMode() ) {
$flags[] = 'readrights';
}
if ( $this->isWriteMode() ) {
$flags[] = 'writerights';
}
if ( $this->mustBePosted() ) {
$flags[] = 'mustbeposted';
}
return $flags;
}
/**
* Returns information about the source of this module, if known
*
* Returned array is an array with the following keys:
* - path: Install path
* - name: Extension name, or "MediaWiki" for core
* - namemsg: (optional) i18n message key for a display name
* - license-name: (optional) Name of license
*
* @return array|null
*/
protected function getModuleSourceInfo() {
if ( $this->mModuleSource !== false ) {
return $this->mModuleSource;
}
// First, try to find where the module comes from...
$rClass = new ReflectionClass( $this );
$path = $rClass->getFileName();
if ( !$path ) {
// No path known?
$this->mModuleSource = null;
return null;
}
$path = realpath( $path ) ?: $path;
// Build a map of extension directories to extension info
if ( self::$extensionInfo === null ) {
$extDir = $this->getConfig()->get( MainConfigNames::ExtensionDirectory );
$baseDir = MW_INSTALL_PATH;
self::$extensionInfo = [
realpath( __DIR__ ) ?: __DIR__ => [
'path' => $baseDir,
'name' => 'MediaWiki',
'license-name' => 'GPL-2.0-or-later',
],
realpath( "$baseDir/extensions" ) ?: "$baseDir/extensions" => null,
realpath( $extDir ) ?: $extDir => null,
];
$keep = [
'path' => null,
'name' => null,
'namemsg' => null,
'license-name' => null,
];
$credits = SpecialVersion::getCredits( ExtensionRegistry::getInstance(), $this->getConfig() );
foreach ( $credits as $group ) {
foreach ( $group as $ext ) {
if ( !isset( $ext['path'] ) || !isset( $ext['name'] ) ) {
// This shouldn't happen, but does anyway.
continue;
}
$extpath = $ext['path'];
if ( !is_dir( $extpath ) ) {
$extpath = dirname( $extpath );
}
self::$extensionInfo[realpath( $extpath ) ?: $extpath] =
array_intersect_key( $ext, $keep );
}
}
}
// Now traverse parent directories until we find a match or run out of parents.
do {
if ( array_key_exists( $path, self::$extensionInfo ) ) {
// Found it!
$this->mModuleSource = self::$extensionInfo[$path];
return $this->mModuleSource;
}
$oldpath = $path;
$path = dirname( $path );
} while ( $path !== $oldpath );
// No idea what extension this might be.
$this->mModuleSource = null;
return null;
}
/**
* Called from ApiHelp before the pieces are joined together and returned.
*
* This exists mainly for ApiMain to add the Permissions and Credits
* sections. Other modules probably don't need it.
*
* @stable to override
* @param string[] &$help Array of help data
* @param array $options Options passed to ApiHelp::getHelp
* @param array &$tocData If a TOC is being generated, this array has keys
* as anchors in the page and values as for SectionMetadata::fromLegacy().
*/
public function modifyHelp( array &$help, array $options, array &$tocData ) {
}
// endregion -- end of help message generation
}
/*
* This file uses VisualStudio style region/endregion fold markers which are
* recognised by PHPStorm. If modelines are enabled, the following editor
* configuration will also enable folding in vim, if it is in the last 5 lines
* of the file. We also use "@name" which creates sections in Doxygen.
*
* vim: foldmarker=//\ region,//\ endregion foldmethod=marker
*/
/** @deprecated class alias since 1.43 */
class_alias( ApiBase::class, 'ApiBase' );

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