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| 1 | <?php |
| 2 | /** |
| 3 | * This program is free software; you can redistribute it and/or modify |
| 4 | * it under the terms of the GNU General Public License as published by |
| 5 | * the Free Software Foundation; either version 2 of the License, or |
| 6 | * (at your option) any later version. |
| 7 | * |
| 8 | * This program is distributed in the hope that it will be useful, |
| 9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 11 | * GNU General Public License for more details. |
| 12 | * |
| 13 | * You should have received a copy of the GNU General Public License along |
| 14 | * with this program; if not, write to the Free Software Foundation, Inc., |
| 15 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. |
| 16 | * http://www.gnu.org/copyleft/gpl.html |
| 17 | * |
| 18 | * @file |
| 19 | */ |
| 20 | namespace MediaWiki\Minerva\Permissions; |
| 21 | |
| 22 | use ContentHandler; |
| 23 | use IContextSource; |
| 24 | use MediaWiki\Config\Config; |
| 25 | use MediaWiki\Config\ConfigException; |
| 26 | use MediaWiki\Content\IContentHandlerFactory; |
| 27 | use MediaWiki\MainConfigNames; |
| 28 | use MediaWiki\Minerva\LanguagesHelper; |
| 29 | use MediaWiki\Minerva\SkinOptions; |
| 30 | use MediaWiki\Output\OutputPage; |
| 31 | use MediaWiki\Permissions\Authority; |
| 32 | use MediaWiki\Permissions\PermissionManager; |
| 33 | use MediaWiki\Title\Title; |
| 34 | use MediaWiki\User\UserFactory; |
| 35 | use MediaWiki\Watchlist\WatchlistManager; |
| 36 | |
| 37 | /** |
| 38 | * A wrapper for all available Minerva permissions. |
| 39 | */ |
| 40 | final class MinervaPagePermissions implements IMinervaPagePermissions { |
| 41 | /** |
| 42 | * @var Title Current page title |
| 43 | */ |
| 44 | private $title; |
| 45 | /** |
| 46 | * @var Config Extension config |
| 47 | */ |
| 48 | private $config; |
| 49 | |
| 50 | /** |
| 51 | * @var Authority |
| 52 | */ |
| 53 | private $performer; |
| 54 | |
| 55 | private OutputPage $out; |
| 56 | |
| 57 | /** |
| 58 | * @var ContentHandler |
| 59 | */ |
| 60 | private $contentHandler; |
| 61 | |
| 62 | /** |
| 63 | * @var SkinOptions Minerva skin options |
| 64 | */ |
| 65 | private $skinOptions; |
| 66 | |
| 67 | /** |
| 68 | * @var LanguagesHelper |
| 69 | */ |
| 70 | private $languagesHelper; |
| 71 | |
| 72 | /** |
| 73 | * @var PermissionManager |
| 74 | */ |
| 75 | private $permissionManager; |
| 76 | |
| 77 | /** |
| 78 | * @var IContentHandlerFactory |
| 79 | */ |
| 80 | private $contentHandlerFactory; |
| 81 | |
| 82 | private UserFactory $userFactory; |
| 83 | |
| 84 | private WatchlistManager $watchlistManager; |
| 85 | |
| 86 | /** |
| 87 | * Initialize internal Minerva Permissions system |
| 88 | * @param SkinOptions $skinOptions |
| 89 | * @param LanguagesHelper $languagesHelper |
| 90 | * @param PermissionManager $permissionManager |
| 91 | * @param IContentHandlerFactory $contentHandlerFactory |
| 92 | * @param UserFactory $userFactory |
| 93 | * @param WatchlistManager $watchlistManager |
| 94 | */ |
| 95 | public function __construct( |
| 96 | SkinOptions $skinOptions, |
| 97 | LanguagesHelper $languagesHelper, |
| 98 | PermissionManager $permissionManager, |
| 99 | IContentHandlerFactory $contentHandlerFactory, |
| 100 | UserFactory $userFactory, |
| 101 | WatchlistManager $watchlistManager |
| 102 | ) { |
| 103 | $this->skinOptions = $skinOptions; |
| 104 | $this->languagesHelper = $languagesHelper; |
| 105 | $this->permissionManager = $permissionManager; |
| 106 | $this->contentHandlerFactory = $contentHandlerFactory; |
| 107 | $this->userFactory = $userFactory; |
| 108 | $this->watchlistManager = $watchlistManager; |
| 109 | } |
| 110 | |
| 111 | /** |
| 112 | * @param IContextSource $context |
| 113 | * @return $this |
| 114 | */ |
| 115 | public function setContext( IContextSource $context ) { |
| 116 | $this->title = $context->getTitle(); |
| 117 | $this->config = $context->getConfig(); |
| 118 | $this->performer = $context->getAuthority(); |
| 119 | $this->out = $context->getOutput(); |
| 120 | // Title may be undefined in certain contexts (T179833) |
| 121 | // TODO: Check if this is still true if we always pass a context instead of using global one |
| 122 | if ( $this->title ) { |
| 123 | $this->contentHandler = $this->contentHandlerFactory->getContentHandler( |
| 124 | $this->title->getContentModel() |
| 125 | ); |
| 126 | } |
| 127 | return $this; |
| 128 | } |
| 129 | |
| 130 | /** |
| 131 | * Gets whether or not the action is allowed. |
| 132 | * |
| 133 | * Actions isn't allowed when: |
| 134 | * <ul> |
| 135 | * <li>the user is on the main page</li> |
| 136 | * </ul> |
| 137 | * |
| 138 | * The "edit" action is not allowed if editing is not possible on the page |
| 139 | * @see method isCurrentPageContentModelEditable |
| 140 | * |
| 141 | * The "switch-language" is allowed if there are interlanguage links on the page, |
| 142 | * or <code>$wgMinervaAlwaysShowLanguageButton</code> is truthy. |
| 143 | * |
| 144 | * @inheritDoc |
| 145 | * @throws ConfigException |
| 146 | */ |
| 147 | public function isAllowed( $action ) { |
| 148 | if ( !$this->title ) { |
| 149 | return false; |
| 150 | } |
| 151 | |
| 152 | // T206406: Enable "Talk" or "Discussion" button on Main page, also, not forgetting |
| 153 | // the "switch-language" button. But disable "edit" and "watch" actions. |
| 154 | if ( $this->title->isMainPage() ) { |
| 155 | if ( $action === self::SWITCH_LANGUAGE ) { |
| 156 | return !$this->config->get( MainConfigNames::HideInterlanguageLinks ); |
| 157 | } |
| 158 | // Only the talk page is allowed on the main page provided user is registered. |
| 159 | // talk page permission is disabled on mobile for anons |
| 160 | // https://phabricator.wikimedia.org/T54165 |
| 161 | return $action === self::TALK && $this->performer->isRegistered(); |
| 162 | } |
| 163 | |
| 164 | if ( $action === self::TALK ) { |
| 165 | return ( |
| 166 | $this->title->isTalkPage() || |
| 167 | $this->title->canHaveTalkPage() |
| 168 | ); |
| 169 | } |
| 170 | |
| 171 | if ( $action === self::HISTORY && $this->title->exists() ) { |
| 172 | return $this->skinOptions->get( SkinOptions::HISTORY_IN_PAGE_ACTIONS ); |
| 173 | } |
| 174 | |
| 175 | if ( $action === SkinOptions::TOOLBAR_SUBMENU ) { |
| 176 | return $this->skinOptions->get( SkinOptions::TOOLBAR_SUBMENU ); |
| 177 | } |
| 178 | |
| 179 | if ( $action === self::EDIT_OR_CREATE ) { |
| 180 | return $this->canEditOrCreate(); |
| 181 | } |
| 182 | |
| 183 | if ( $action === self::CONTENT_EDIT ) { |
| 184 | return $this->isCurrentPageContentModelEditable(); |
| 185 | } |
| 186 | |
| 187 | if ( $action === self::WATCHABLE || $action === self::WATCH ) { |
| 188 | $isWatchable = $this->watchlistManager->isWatchable( $this->title ); |
| 189 | |
| 190 | if ( $action === self::WATCHABLE ) { |
| 191 | return $isWatchable; |
| 192 | } |
| 193 | if ( $action === self::WATCH ) { |
| 194 | return $isWatchable && |
| 195 | $this->performer->isAllowedAll( 'viewmywatchlist', 'editmywatchlist' ); |
| 196 | } |
| 197 | } |
| 198 | |
| 199 | if ( $action === self::SWITCH_LANGUAGE ) { |
| 200 | if ( $this->config->get( MainConfigNames::HideInterlanguageLinks ) ) { |
| 201 | return false; |
| 202 | } |
| 203 | return $this->languagesHelper->doesTitleHasLanguagesOrVariants( $this->out, $this->title ) || |
| 204 | $this->config->get( 'MinervaAlwaysShowLanguageButton' ); |
| 205 | } |
| 206 | |
| 207 | if ( $action === self::MOVE ) { |
| 208 | return $this->canMove(); |
| 209 | } |
| 210 | |
| 211 | if ( $action === self::DELETE ) { |
| 212 | return $this->canDelete(); |
| 213 | } |
| 214 | |
| 215 | if ( $action === self::PROTECT ) { |
| 216 | return $this->canProtect(); |
| 217 | } |
| 218 | |
| 219 | // Unknown action has been passed. |
| 220 | return false; |
| 221 | } |
| 222 | |
| 223 | /** |
| 224 | * @inheritDoc |
| 225 | */ |
| 226 | public function isTalkAllowed() { |
| 227 | return $this->isAllowed( self::TALK ); |
| 228 | } |
| 229 | |
| 230 | /** |
| 231 | * Checks whether the editor can handle the existing content handler type. |
| 232 | * |
| 233 | * @return bool |
| 234 | */ |
| 235 | protected function isCurrentPageContentModelEditable() { |
| 236 | if ( !$this->contentHandler ) { |
| 237 | return false; |
| 238 | } |
| 239 | |
| 240 | if ( |
| 241 | $this->contentHandler->supportsDirectEditing() && |
| 242 | $this->contentHandler->supportsDirectApiEditing() |
| 243 | ) { |
| 244 | return true; |
| 245 | } |
| 246 | |
| 247 | // For content types with custom action=edit handlers, let them do their thing |
| 248 | if ( array_key_exists( 'edit', $this->contentHandler->getActionOverrides() ?? [] ) ) { |
| 249 | return true; |
| 250 | } |
| 251 | |
| 252 | return false; |
| 253 | } |
| 254 | |
| 255 | /** |
| 256 | * Returns true if $title page exists and is editable or is creatable by $user as determined by |
| 257 | * quick checks. |
| 258 | * @return bool |
| 259 | */ |
| 260 | private function canEditOrCreate() { |
| 261 | if ( !$this->title ) { |
| 262 | return false; |
| 263 | } |
| 264 | |
| 265 | $userQuickEditCheck = |
| 266 | $this->performer->probablyCan( 'edit', $this->title ) && ( |
| 267 | $this->title->exists() || |
| 268 | $this->performer->probablyCan( 'create', $this->title ) |
| 269 | ); |
| 270 | if ( $this->performer->isRegistered() ) { |
| 271 | $legacyUser = $this->userFactory->newFromAuthority( $this->performer ); |
| 272 | $blocked = $this->permissionManager->isBlockedFrom( |
| 273 | $legacyUser, $this->title, true |
| 274 | ); |
| 275 | } else { |
| 276 | $blocked = false; |
| 277 | } |
| 278 | return $this->isCurrentPageContentModelEditable() && $userQuickEditCheck && !$blocked; |
| 279 | } |
| 280 | |
| 281 | /** |
| 282 | * Checks whether the user has the permissions to move the current page. |
| 283 | * |
| 284 | * @return bool |
| 285 | */ |
| 286 | private function canMove() { |
| 287 | if ( !$this->title ) { |
| 288 | return false; |
| 289 | } |
| 290 | |
| 291 | return $this->performer->probablyCan( 'move', $this->title ) |
| 292 | && $this->title->exists(); |
| 293 | } |
| 294 | |
| 295 | /** |
| 296 | * Checks whether the user has the permissions to delete the current page. |
| 297 | * |
| 298 | * @return bool |
| 299 | */ |
| 300 | private function canDelete() { |
| 301 | if ( !$this->title ) { |
| 302 | return false; |
| 303 | } |
| 304 | |
| 305 | return $this->performer->probablyCan( 'delete', $this->title ) |
| 306 | && $this->title->exists(); |
| 307 | } |
| 308 | |
| 309 | /** |
| 310 | * Checks whether the user has the permissions to change the protections status of the current page. |
| 311 | * |
| 312 | * @return bool |
| 313 | */ |
| 314 | private function canProtect() { |
| 315 | if ( !$this->title ) { |
| 316 | return false; |
| 317 | } |
| 318 | |
| 319 | return $this->performer->probablyCan( 'protect', $this->title ) |
| 320 | && $this->title->exists(); |
| 321 | } |
| 322 | } |