includes/registration/ExtensionProcessor.php

   1 <?php
   2
   3 class ExtensionProcessor implements Processor {
   4
   5         /**
   6          * Keys that should be set to $GLOBALS
   7          *
   8          * @var array
   9          */
  10         protected static $globalSettings = array(
  11                 'ResourceLoaderSources',
  12                 'ResourceLoaderLESSVars',
  13                 'ResourceLoaderLESSImportPaths',
  14                 'DefaultUserOptions',
  15                 'HiddenPrefs',
  16                 'GroupPermissions',
  17                 'RevokePermissions',
  18                 'ImplicitGroups',
  19                 'GroupsAddToSelf',
  20                 'GroupsRemoveFromSelf',
  21                 'AddGroups',
  22                 'RemoveGroups',
  23                 'AvailableRights',
  24                 'ContentHandlers',
  25                 'ConfigRegistry',
  26                 'CentralIdLookupProviders',
  27                 'RateLimits',
  28                 'RecentChangesFlags',
  29                 'MediaHandlers',
  30                 'ExtensionFunctions',
  31                 'ExtensionEntryPointListFiles',
  32                 'SpecialPages',
  33                 'JobClasses',
  34                 'LogTypes',
  35                 'LogRestrictions',
  36                 'FilterLogTypes',
  37                 'LogNames',
  38                 'LogHeaders',
  39                 'LogActions',
  40                 'LogActionsHandlers',
  41                 'Actions',
  42                 'APIModules',
  43                 'APIFormatModules',
  44                 'APIMetaModules',
  45                 'APIPropModules',
  46                 'APIListModules',
  47                 'ValidSkinNames',
  48                 'FeedClasses',
  49         );
  50
  51         /**
  52          * Mapping of global settings to their specific merge strategies.
  53          *
  54          * @see ExtensionRegistry::exportExtractedData
  55          * @see getExtractedInfo
  56          * @var array
  57          */
  58         protected static $mergeStrategies = array(
  59                 'wgGroupPermissions' => 'array_plus_2d',
  60                 'wgRevokePermissions' => 'array_plus_2d',
  61                 'wgHooks' => 'array_merge_recursive',
  62                 'wgExtensionCredits' => 'array_merge_recursive',
  63                 'wgExtraGenderNamespaces' => 'array_plus',
  64                 'wgNamespacesWithSubpages' => 'array_plus',
  65                 'wgNamespaceContentModels' => 'array_plus',
  66                 'wgNamespaceProtection' => 'array_plus',
  67                 'wgCapitalLinkOverrides' => 'array_plus',
  68                 'wgRateLimits' => 'array_plus_2d',
  69         );
  70
  71         /**
  72          * Keys that are part of the extension credits
  73          *
  74          * @var array
  75          */
  76         protected static $creditsAttributes = array(
  77                 'name',
  78                 'namemsg',
  79                 'author',
  80                 'version',
  81                 'url',
  82                 'description',
  83                 'descriptionmsg',
  84                 'license-name',
  85         );
  86
  87         /**
  88          * Things that are not 'attributes', but are not in
  89          * $globalSettings or $creditsAttributes.
  90          *
  91          * @var array
  92          */
  93         protected static $notAttributes = array(
  94                 'callback',
  95                 'Hooks',
  96                 'namespaces',
  97                 'ResourceFileModulePaths',
  98                 'ResourceModules',
  99                 'ResourceModuleSkinStyles',
 100                 'ExtensionMessagesFiles',
 101                 'MessagesDirs',
 102                 'type',
 103                 'config',
 104                 'ParserTestFiles',
 105                 'AutoloadClasses',
 106                 'manifest_version',
 107                 'load_composer_autoloader',
 108         );
 109
 110         /**
 111          * Stuff that is going to be set to $GLOBALS
 112          *
 113          * Some keys are pre-set to arrays so we can += to them
 114          *
 115          * @var array
 116          */
 117         protected $globals = array(
 118                 'wgExtensionMessagesFiles' => array(),
 119                 'wgMessagesDirs' => array(),
 120         );
 121
 122         /**
 123          * Things that should be define()'d
 124          *
 125          * @var array
 126          */
 127         protected $defines = array();
 128
 129         /**
 130          * Things to be called once registration of these extensions are done
 131          *
 132          * @var callable[]
 133          */
 134         protected $callbacks = array();
 135
 136         /**
 137          * @var array
 138          */
 139         protected $credits = array();
 140
 141         /**
 142          * Any thing else in the $info that hasn't
 143          * already been processed
 144          *
 145          * @var array
 146          */
 147         protected $attributes = array();
 148
 149         /**
 150          * @param string $path
 151          * @param array $info
 152          * @param int $version manifest_version for info
 153          * @return array
 154          */
 155         public function extractInfo( $path, array $info, $version ) {
 156                 $this->extractConfig( $info );
 157                 $this->extractHooks( $info );
 158                 $dir = dirname( $path );
 159                 $this->extractExtensionMessagesFiles( $dir, $info );
 160                 $this->extractMessagesDirs( $dir, $info );
 161                 $this->extractNamespaces( $info );
 162                 $this->extractResourceLoaderModules( $dir, $info );
 163                 $this->extractParserTestFiles( $dir, $info );
 164                 if ( isset( $info['callback'] ) ) {
 165                         $this->callbacks[] = $info['callback'];
 166                 }
 167
 168                 $this->extractCredits( $path, $info );
 169                 foreach ( $info as $key => $val ) {
 170                         if ( in_array( $key, self::$globalSettings ) ) {
 171                                 $this->storeToArray( "wg$key", $val, $this->globals );
 172                         // Ignore anything that starts with a @
 173                         } elseif ( $key[0] !== '@' && !in_array( $key, self::$notAttributes )
 174                                 && !in_array( $key, self::$creditsAttributes )
 175                         ) {
 176                                 $this->storeToArray( $key, $val, $this->attributes );
 177                         }
 178                 }
 179         }
 180
 181         public function getExtractedInfo() {
 182                 // Make sure the merge strategies are set
 183                 foreach ( $this->globals as $key => $val ) {
 184                         if ( isset( self::$mergeStrategies[$key] ) ) {
 185                                 $this->globals[$key][ExtensionRegistry::MERGE_STRATEGY] = self::$mergeStrategies[$key];
 186                         }
 187                 }
 188
 189                 return array(
 190                         'globals' => $this->globals,
 191                         'defines' => $this->defines,
 192                         'callbacks' => $this->callbacks,
 193                         'credits' => $this->credits,
 194                         'attributes' => $this->attributes,
 195                 );
 196         }
 197
 198         public function getRequirements( array $info ) {
 199                 $requirements = array();
 200                 $key = ExtensionRegistry::MEDIAWIKI_CORE;
 201                 if ( isset( $info['requires'][$key] ) ) {
 202                         $requirements[$key] = $info['requires'][$key];
 203                 }
 204
 205                 return $requirements;
 206         }
 207
 208         protected function extractHooks( array $info ) {
 209                 if ( isset( $info['Hooks'] ) ) {
 210                         foreach ( $info['Hooks'] as $name => $value ) {
 211                                 foreach ( (array)$value as $callback ) {
 212                                         $this->globals['wgHooks'][$name][] = $callback;
 213                                 }
 214                         }
 215                 }
 216         }
 217
 218         /**
 219          * Register namespaces with the appropriate global settings
 220          *
 221          * @param array $info
 222          */
 223         protected function extractNamespaces( array $info ) {
 224                 if ( isset( $info['namespaces'] ) ) {
 225                         foreach ( $info['namespaces'] as $ns ) {
 226                                 $id = $ns['id'];
 227                                 $this->defines[$ns['constant']] = $id;
 228                                 $this->attributes['ExtensionNamespaces'][$id] = $ns['name'];
 229                                 if ( isset( $ns['gender'] ) ) {
 230                                         $this->globals['wgExtraGenderNamespaces'][$id] = $ns['gender'];
 231                                 }
 232                                 if ( isset( $ns['subpages'] ) && $ns['subpages'] ) {
 233                                         $this->globals['wgNamespacesWithSubpages'][$id] = true;
 234                                 }
 235                                 if ( isset( $ns['content'] ) && $ns['content'] ) {
 236                                         $this->globals['wgContentNamespaces'][] = $id;
 237                                 }
 238                                 if ( isset( $ns['defaultcontentmodel'] ) ) {
 239                                         $this->globals['wgNamespaceContentModels'][$id] = $ns['defaultcontentmodel'];
 240                                 }
 241                                 if ( isset( $ns['protection'] ) ) {
 242                                         $this->globals['wgNamespaceProtection'][$id] = $ns['protection'];
 243                                 }
 244                                 if ( isset( $ns['capitallinkoverride'] ) ) {
 245                                         $this->globals['wgCapitalLinkOverrides'][$id] = $ns['capitallinkoverride'];
 246                                 }
 247                         }
 248                 }
 249         }
 250
 251         protected function extractResourceLoaderModules( $dir, array $info ) {
 252                 $defaultPaths = isset( $info['ResourceFileModulePaths'] )
 253                         ? $info['ResourceFileModulePaths']
 254                         : false;
 255                 if ( isset( $defaultPaths['localBasePath'] ) ) {
 256                         $defaultPaths['localBasePath'] = "$dir/{$defaultPaths['localBasePath']}";
 257                 }
 258
 259                 foreach ( array( 'ResourceModules', 'ResourceModuleSkinStyles' ) as $setting ) {
 260                         if ( isset( $info[$setting] ) ) {
 261                                 foreach ( $info[$setting] as $name => $data ) {
 262                                         if ( isset( $data['localBasePath'] ) ) {
 263                                                 $data['localBasePath'] = "$dir/{$data['localBasePath']}";
 264                                         }
 265                                         if ( $defaultPaths ) {
 266                                                 $data += $defaultPaths;
 267                                         }
 268                                         $this->globals["wg$setting"][$name] = $data;
 269                                 }
 270                         }
 271                 }
 272         }
 273
 274         protected function extractExtensionMessagesFiles( $dir, array $info ) {
 275                 if ( isset( $info['ExtensionMessagesFiles'] ) ) {
 276                         $this->globals["wgExtensionMessagesFiles"] += array_map( function( $file ) use ( $dir ) {
 277                                 return "$dir/$file";
 278                         }, $info['ExtensionMessagesFiles'] );
 279                 }
 280         }
 281
 282         /**
 283          * Set message-related settings, which need to be expanded to use
 284          * absolute paths
 285          *
 286          * @param string $dir
 287          * @param array $info
 288          */
 289         protected function extractMessagesDirs( $dir, array $info ) {
 290                 if ( isset( $info['MessagesDirs'] ) ) {
 291                         foreach ( $info['MessagesDirs'] as $name => $files ) {
 292                                 foreach ( (array)$files as $file ) {
 293                                         $this->globals["wgMessagesDirs"][$name][] = "$dir/$file";
 294                                 }
 295                         }
 296                 }
 297         }
 298
 299         /**
 300          * @param string $path
 301          * @param array $info
 302          * @throws Exception
 303          */
 304         protected function extractCredits( $path, array $info ) {
 305                 $credits = array(
 306                         'path' => $path,
 307                         'type' => isset( $info['type'] ) ? $info['type'] : 'other',
 308                 );
 309                 foreach ( self::$creditsAttributes as $attr ) {
 310                         if ( isset( $info[$attr] ) ) {
 311                                 $credits[$attr] = $info[$attr];
 312                         }
 313                 }
 314
 315                 $name = $credits['name'];
 316
 317                 // If someone is loading the same thing twice, throw
 318                 // a nice error (T121493)
 319                 if ( isset( $this->credits[$name] ) ) {
 320                         $firstPath = $this->credits[$name]['path'];
 321                         $secondPath = $credits['path'];
 322                         throw new Exception( "It was attempted to load $name twice, from $firstPath and $secondPath." );
 323                 }
 324
 325                 $this->credits[$name] = $credits;
 326                 $this->globals['wgExtensionCredits'][$credits['type']][] = $credits;
 327         }
 328
 329         /**
 330          * Set configuration settings
 331          * @todo In the future, this should be done via Config interfaces
 332          *
 333          * @param array $info
 334          */
 335         protected function extractConfig( array $info ) {
 336                 if ( isset( $info['config'] ) ) {
 337                         if ( isset( $info['config']['_prefix'] ) ) {
 338                                 $prefix = $info['config']['_prefix'];
 339                                 unset( $info['config']['_prefix'] );
 340                         } else {
 341                                 $prefix = 'wg';
 342                         }
 343                         foreach ( $info['config'] as $key => $val ) {
 344                                 if ( $key[0] !== '@' ) {
 345                                         $this->globals["$prefix$key"] = $val;
 346                                 }
 347                         }
 348                 }
 349         }
 350
 351         protected function extractParserTestFiles( $dir, array $info ) {
 352                 if ( isset( $info['ParserTestFiles'] ) ) {
 353                         foreach ( $info['ParserTestFiles'] as $path ) {
 354                                 $this->globals['wgParserTestFiles'][] = "$dir/$path";
 355                         }
 356                 }
 357         }
 358
 359         /**
 360          * @param string $name
 361          * @param array $value
 362          * @param array &$array
 363          * @throws InvalidArgumentException
 364          */
 365         protected function storeToArray( $name, $value, &$array ) {
 366                 if ( !is_array( $value ) ) {
 367                         throw new InvalidArgumentException( "The value for '$name' should be an array" );
 368                 }
 369                 if ( isset( $array[$name] ) ) {
 370                         $array[$name] = array_merge_recursive( $array[$name], $value );
 371                 } else {
 372                         $array[$name] = $value;
 373                 }
 374         }
 375
 376         public function getExtraAutoloaderPaths( $dir, array $info ) {
 377                 $paths = array();
 378                 if ( isset( $info['load_composer_autoloader'] ) && $info['load_composer_autoloader'] === true ) {
 379                         $path = "$dir/vendor/autoload.php";
 380                         if ( file_exists( $path ) ) {
 381                                 $paths[] = $path;
 382                         }
 383                 }
 384                 return $paths;
 385         }
 386 }