Merge "Introduce ApiMaxLagInfo hook"
[lhc/web/wiklou.git] / includes / api / ApiBase.php
index 0802e16..8a99e6a 100644 (file)
@@ -761,10 +761,23 @@ abstract class ApiBase extends ContextSource {
         * 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 $parseLimit True by default
+        * @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( $parseLimit = true ) {
+       public function extractRequestParams( $options = [] ) {
+               if ( is_bool( $options ) ) {
+                       $options = [ 'parseLimit' => $options ];
+               }
+               $options += [
+                       'parseLimit' => true,
+                       'safeMode' => false,
+               ];
+
+               $parseLimit = (bool)$options['parseLimit'];
+
                // Cache parameters, for performance and to avoid T26564.
                if ( !isset( $this->mParamCache[$parseLimit] ) ) {
                        $params = $this->getFinalParams() ?: [];
@@ -778,9 +791,13 @@ abstract class ApiBase extends ContextSource {
                                if ( isset( $paramSettings[self::PARAM_TEMPLATE_VARS] ) ) {
                                        $toProcess[] = [ $paramName, $paramSettings[self::PARAM_TEMPLATE_VARS], $paramSettings ];
                                } else {
-                                       $results[$paramName] = $this->getParameterFromSettings(
-                                               $paramName, $paramSettings, $parseLimit
-                                       );
+                                       try {
+                                               $results[$paramName] = $this->getParameterFromSettings(
+                                                       $paramName, $paramSettings, $parseLimit
+                                               );
+                                       } catch ( ApiUsageException $ex ) {
+                                               $results[$paramName] = $ex;
+                                       }
                                }
                        }
 
@@ -826,7 +843,11 @@ abstract class ApiBase extends ContextSource {
 
                                                $newName = str_replace( $placeholder, $value, $name );
                                                if ( !$targets ) {
-                                                       $results[$newName] = $this->getParameterFromSettings( $newName, $settings, $parseLimit );
+                                                       try {
+                                                               $results[$newName] = $this->getParameterFromSettings( $newName, $settings, $parseLimit );
+                                                       } catch ( ApiUsageException $ex ) {
+                                                               $results[$newName] = $ex;
+                                                       }
                                                } else {
                                                        $newTargets = [];
                                                        foreach ( $targets as $k => $v ) {
@@ -842,6 +863,15 @@ abstract class ApiBase extends ContextSource {
                        $this->mParamCache[$parseLimit] = $results;
                }
 
+               $ret = $this->mParamCache[$parseLimit];
+               if ( !$options['safeMode'] ) {
+                       foreach ( $ret as $v ) {
+                               if ( $v instanceof ApiUsageException ) {
+                                       throw $v;
+                               }
+                       }
+               }
+
                return $this->mParamCache[$parseLimit];
        }
 
@@ -852,7 +882,14 @@ abstract class ApiBase extends ContextSource {
         * @return mixed Parameter value
         */
        protected function getParameter( $paramName, $parseLimit = true ) {
-               return $this->extractRequestParams( $parseLimit )[$paramName];
+               $ret = $this->extractRequestParams( [
+                       'parseLimit' => $parseLimit,
+                       'safeMode' => true,
+               ] )[$paramName];
+               if ( $ret instanceof ApiUsageException ) {
+                       throw $ret;
+               }
+               return $ret;
        }
 
        /**
@@ -1119,36 +1156,16 @@ abstract class ApiBase extends ContextSource {
                        ];
                }
 
-               $default = isset( $paramSettings[self::PARAM_DFLT] )
-                       ? $paramSettings[self::PARAM_DFLT]
-                       : null;
-               $multi = isset( $paramSettings[self::PARAM_ISMULTI] )
-                       ? $paramSettings[self::PARAM_ISMULTI]
-                       : false;
-               $multiLimit1 = isset( $paramSettings[self::PARAM_ISMULTI_LIMIT1] )
-                       ? $paramSettings[self::PARAM_ISMULTI_LIMIT1]
-                       : null;
-               $multiLimit2 = isset( $paramSettings[self::PARAM_ISMULTI_LIMIT2] )
-                       ? $paramSettings[self::PARAM_ISMULTI_LIMIT2]
-                       : null;
-               $type = isset( $paramSettings[self::PARAM_TYPE] )
-                       ? $paramSettings[self::PARAM_TYPE]
-                       : null;
-               $dupes = isset( $paramSettings[self::PARAM_ALLOW_DUPLICATES] )
-                       ? $paramSettings[self::PARAM_ALLOW_DUPLICATES]
-                       : false;
-               $deprecated = isset( $paramSettings[self::PARAM_DEPRECATED] )
-                       ? $paramSettings[self::PARAM_DEPRECATED]
-                       : false;
-               $deprecatedValues = isset( $paramSettings[self::PARAM_DEPRECATED_VALUES] )
-                       ? $paramSettings[self::PARAM_DEPRECATED_VALUES]
-                       : [];
-               $required = isset( $paramSettings[self::PARAM_REQUIRED] )
-                       ? $paramSettings[self::PARAM_REQUIRED]
-                       : false;
-               $allowAll = isset( $paramSettings[self::PARAM_ALL] )
-                       ? $paramSettings[self::PARAM_ALL]
-                       : false;
+               $default = $paramSettings[self::PARAM_DFLT] ?? null;
+               $multi = $paramSettings[self::PARAM_ISMULTI] ?? false;
+               $multiLimit1 = $paramSettings[self::PARAM_ISMULTI_LIMIT1] ?? null;
+               $multiLimit2 = $paramSettings[self::PARAM_ISMULTI_LIMIT2] ?? null;
+               $type = $paramSettings[self::PARAM_TYPE] ?? null;
+               $dupes = $paramSettings[self::PARAM_ALLOW_DUPLICATES] ?? false;
+               $deprecated = $paramSettings[self::PARAM_DEPRECATED] ?? false;
+               $deprecatedValues = $paramSettings[self::PARAM_DEPRECATED_VALUES] ?? [];
+               $required = $paramSettings[self::PARAM_REQUIRED] ?? false;
+               $allowAll = $paramSettings[self::PARAM_ALL] ?? false;
 
                // When type is not given, and no choices, the type is the same as $default
                if ( !isset( $type ) ) {
@@ -1276,10 +1293,9 @@ abstract class ApiBase extends ContextSource {
                                                }
                                                break;
                                        case 'integer': // Force everything using intval() and optionally validate limits
-                                               $min = isset( $paramSettings[self::PARAM_MIN] ) ? $paramSettings[self::PARAM_MIN] : null;
-                                               $max = isset( $paramSettings[self::PARAM_MAX] ) ? $paramSettings[self::PARAM_MAX] : null;
-                                               $enforceLimits = isset( $paramSettings[self::PARAM_RANGE_ENFORCE] )
-                                                       ? $paramSettings[self::PARAM_RANGE_ENFORCE] : false;
+                                               $min = $paramSettings[self::PARAM_MIN] ?? null;
+                                               $max = $paramSettings[self::PARAM_MAX] ?? null;
+                                               $enforceLimits = $paramSettings[self::PARAM_RANGE_ENFORCE] ?? false;
 
                                                if ( is_array( $value ) ) {
                                                        $value = array_map( 'intval', $value );
@@ -1311,7 +1327,7 @@ abstract class ApiBase extends ContextSource {
                                                if ( $multi ) {
                                                        self::dieDebug( __METHOD__, "Multi-values not supported for $encParamName" );
                                                }
-                                               $min = isset( $paramSettings[self::PARAM_MIN] ) ? $paramSettings[self::PARAM_MIN] : 0;
+                                               $min = $paramSettings[self::PARAM_MIN] ?? 0;
                                                if ( $value == 'max' ) {
                                                        $value = $this->getMain()->canApiHighLimits()
                                                                ? $paramSettings[self::PARAM_MAX2]
@@ -1502,10 +1518,10 @@ abstract class ApiBase extends ContextSource {
                        return $allowedValues;
                }
 
-               if ( self::truncateArray( $valuesList, $sizeLimit ) ) {
-                       $this->addDeprecation(
-                               [ 'apiwarn-toomanyvalues', $valueName, $sizeLimit ],
-                               "too-many-$valueName-for-{$this->getModulePath()}"
+               if ( count( $valuesList ) > $sizeLimit ) {
+                       $this->dieWithError(
+                               [ 'apierror-toomanyvalues', $valueName, $sizeLimit ],
+                               "too-many-$valueName"
                        );
                }
 
@@ -1691,32 +1707,30 @@ abstract class ApiBase extends ContextSource {
                        return $value;
                }
 
-               $titleObj = Title::makeTitleSafe( NS_USER, $value );
-
-               if ( $titleObj ) {
-                       $value = $titleObj->getText();
+               $name = User::getCanonicalName( $value, 'valid' );
+               if ( $name !== false ) {
+                       return $name;
                }
 
                if (
-                       !User::isValidUserName( $value ) &&
                        // We allow ranges as well, for blocks.
-                       !IP::isIPAddress( $value ) &&
+                       IP::isIPAddress( $value ) ||
                        // See comment for User::isIP.  We don't just call that function
                        // here because it also returns true for things like
                        // 300.300.300.300 that are neither valid usernames nor valid IP
                        // addresses.
-                       !preg_match(
+                       preg_match(
                                '/^' . RE_IP_BYTE . '\.' . RE_IP_BYTE . '\.' . RE_IP_BYTE . '\.xxx$/',
                                $value
                        )
                ) {
-                       $this->dieWithError(
-                               [ 'apierror-baduser', $encParamName, wfEscapeWikiText( $value ) ],
-                               "baduser_{$encParamName}"
-                       );
+                       return IP::sanitizeIP( $value );
                }
 
-               return $value;
+               $this->dieWithError(
+                       [ 'apierror-baduser', $encParamName, wfEscapeWikiText( $value ) ],
+                       "baduser_{$encParamName}"
+               );
        }
 
        /**@}*/
@@ -1741,22 +1755,6 @@ abstract class ApiBase extends ContextSource {
                WatchAction::doWatchOrUnwatch( $value, $titleObj, $this->getUser() );
        }
 
-       /**
-        * Truncate an array to a certain length.
-        * @param array &$arr Array to truncate
-        * @param int $limit Maximum length
-        * @return bool True if the array was truncated, false otherwise
-        */
-       public static function truncateArray( &$arr, $limit ) {
-               $modified = false;
-               while ( count( $arr ) > $limit ) {
-                       array_pop( $arr );
-                       $modified = true;
-               }
-
-               return $modified;
-       }
-
        /**
         * Gets the user for whom to get the watchlist
         *
@@ -2316,7 +2314,7 @@ abstract class ApiBase extends ContextSource {
                                        'api-help-param-token',
                                        $this->needsToken(),
                                ],
-                       ] + ( isset( $params['token'] ) ? $params['token'] : [] );
+                       ] + ( $params['token'] ?? [] );
                }
 
                // Avoid PHP 7.1 warning of passing $this by reference
@@ -2356,7 +2354,7 @@ abstract class ApiBase extends ContextSource {
                                $settings = [];
                        }
 
-                       $d = isset( $desc[$param] ) ? $desc[$param] : '';
+                       $d = $desc[$param] ?? '';
                        if ( is_array( $d ) ) {
                                // Special handling for prop parameters
                                $d = array_map( function ( $line ) {
@@ -2438,9 +2436,7 @@ abstract class ApiBase extends ContextSource {
                                }
 
                                $valueMsgs = $settings[self::PARAM_HELP_MSG_PER_VALUE];
-                               $deprecatedValues = isset( $settings[self::PARAM_DEPRECATED_VALUES] )
-                                       ? $settings[self::PARAM_DEPRECATED_VALUES]
-                                       : [];
+                               $deprecatedValues = $settings[self::PARAM_DEPRECATED_VALUES] ?? [];
 
                                foreach ( $settings[self::PARAM_TYPE] as $value ) {
                                        if ( isset( $valueMsgs[$value] ) ) {
@@ -2792,7 +2788,7 @@ abstract class ApiBase extends ContextSource {
                if ( !$msg instanceof IApiMessage ) {
                        $key = $msg->getKey();
                        $params = $msg->getParams();
-                       array_unshift( $params, isset( self::$messageMap[$key] ) ? self::$messageMap[$key] : $key );
+                       array_unshift( $params, self::$messageMap[$key] ?? $key );
                        $msg = ApiMessage::create( $params );
                }
 
@@ -3041,6 +3037,24 @@ abstract class ApiBase extends ContextSource {
                ] ];
        }
 
+       /**
+        * Truncate an array to a certain length.
+        * @deprecated since 1.32, no replacement
+        * @param array &$arr Array to truncate
+        * @param int $limit Maximum length
+        * @return bool True if the array was truncated, false otherwise
+        */
+       public static function truncateArray( &$arr, $limit ) {
+               wfDeprecated( __METHOD__, '1.32' );
+               $modified = false;
+               while ( count( $arr ) > $limit ) {
+                       array_pop( $arr );
+                       $modified = true;
+               }
+
+               return $modified;
+       }
+
        /**@}*/
 }