X-Git-Url: https://git.toastfreeware.priv.at/toast/cookiecaptcha.git/blobdiff_plain/75483a0771e6e3e2f46e579fc168c386296810c6..bd2fd6676b7154f68f11b3bf73127fe0cbfd9bac:/ConfirmEdit.php diff --git a/ConfirmEdit.php b/ConfirmEdit.php index 6099fb6..9de3da6 100644 --- a/ConfirmEdit.php +++ b/ConfirmEdit.php @@ -1,23 +1,145 @@ + * http://www.mediawiki.org/ + * + * 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., + * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. + * http://www.gnu.org/copyleft/gpl.html + * + * @addtogroup Extensions + */ + +if ( !defined( 'MEDIAWIKI' ) ) { + exit; +} + +global $wgExtensionFunctions, $wgGroupPermissions; + +$wgExtensionFunctions[] = 'confirmEditSetup'; +$wgExtensionCredits['other'][] = array( + 'path' => __FILE__, + 'name' => 'ConfirmEdit', + 'author' => 'Brion Vibber', + 'url' => 'http://www.mediawiki.org/wiki/Extension:ConfirmEdit', + 'description' => 'Simple captcha implementation', + 'descriptionmsg' => 'captcha-desc', +); + +/** + * The 'skipcaptcha' permission key can be given out to + * let known-good users perform triggering actions without + * having to go through the captcha. + * + * By default, sysops and registered bot accounts will be + * able to skip, while others have to go through it. + */ +$wgGroupPermissions['*' ]['skipcaptcha'] = false; +$wgGroupPermissions['user' ]['skipcaptcha'] = false; +$wgGroupPermissions['autoconfirmed']['skipcaptcha'] = false; +$wgGroupPermissions['bot' ]['skipcaptcha'] = true; // registered bots +$wgGroupPermissions['sysop' ]['skipcaptcha'] = true; +$wgAvailableRights[] = 'skipcaptcha'; + +/** + * List of IP ranges to allow to skip the captcha, similar to the group setting: + * "$wgGroupPermission[...]['skipcaptcha'] = true" + * + * Specific IP addresses or CIDR-style ranges may be used, + * for instance: + * $wgCaptchaWhitelistIP = array('192.168.1.0/24', '10.1.0.0/16'); + */ +$wgCaptchaWhitelistIP = false; -# Loader for spam blacklist feature -# Include this from LocalSettings.php +global $wgCaptcha, $wgCaptchaClass, $wgCaptchaTriggers; +$wgCaptcha = null; +$wgCaptchaClass = 'SimpleCaptcha'; -if ( defined( 'MEDIAWIKI' ) ) { +/** + * Actions which can trigger a captcha + * + * If the 'edit' trigger is on, *every* edit will trigger the captcha. + * This may be useful for protecting against vandalbot attacks. + * + * If using the default 'addurl' trigger, the captcha will trigger on + * edits that include URLs that aren't in the current version of the page. + * This should catch automated linkspammers without annoying people when + * they make more typical edits. + * + * The captcha code should not use $wgCaptchaTriggers, but CaptchaTriggers() + * which also takes into account per namespace triggering. + */ +$wgCaptchaTriggers = array(); +$wgCaptchaTriggers['edit'] = false; // Would check on every edit +$wgCaptchaTriggers['create'] = false; // Check on page creation. +$wgCaptchaTriggers['addurl'] = true; // Check on edits that add URLs +$wgCaptchaTriggers['createaccount'] = true; // Special:Userlogin&type=signup +$wgCaptchaTriggers['badlogin'] = true; // Special:Userlogin after failure -global $wgExtensionFunctions, $wgHooks, $wgGroupPermissions; +/** + * You may wish to apply special rules for captcha triggering on some namespaces. + * $wgCaptchaTriggersOnNamespace[][] forces an always on / + * always off configuration with that trigger for the given namespace. + * Leave unset to use the global options ($wgCaptchaTriggers). + * + * Shall not be used with 'createaccount' (it is not checked). + */ +$wgCaptchaTriggersOnNamespace = array(); -$wgExtensionFunctions[] = 'ceSetup'; +# Example: +# $wgCaptchaTriggersOnNamespace[NS_TALK]['create'] = false; //Allow creation of talk pages without captchas. +# $wgCaptchaTriggersOnNamespace[NS_PROJECT]['edit'] = true; //Show captcha whenever editing Project pages. -$wgHooks['EditFilter'][] = 'ceConfirmEditLinks'; +/** + * Indicate how to store per-session data required to match up the + * internal captcha data with the editor. + * + * 'CaptchaSessionStore' uses PHP's session storage, which is cookie-based + * and may fail for anons with cookies disabled. + * + * 'CaptchaCacheStore' uses $wgMemc, which avoids the cookie dependency + * but may be fragile depending on cache configuration. + */ +global $wgCaptchaStorageClass; +$wgCaptchaStorageClass = 'CaptchaSessionStore'; -$wgGroupPermissions['*' ]['skipcaptcha'] = false; -$wgGroupPermissions['user' ]['skipcaptcha'] = false; -$wgGroupPermissions['bot' ]['skipcaptcha'] = true; // registered bots -$wgGroupPermissions['sysop' ]['skipcaptcha'] = true; +/** + * Number of seconds a captcha session should last in the data cache + * before expiring when managing through CaptchaCacheStore class. + * + * Default is a half hour. + */ +global $wgCaptchaSessionExpiration; +$wgCaptchaSessionExpiration = 30 * 60; + +/** + * Number of seconds after a bad login that a captcha will be shown to + * that client on the login form to slow down password-guessing bots. + * + * Has no effect if 'badlogin' is disabled in $wgCaptchaTriggers or + * if there is not a caching engine enabled. + * + * Default is five minutes. + */ +global $wgCaptchaBadLoginExpiration; +$wgCaptchaBadLoginExpiration = 5 * 60; /** * Allow users who have confirmed their e-mail addresses to post @@ -27,141 +149,71 @@ global $ceAllowConfirmedEmail; $ceAllowConfirmedEmail = false; /** - * Set up message strings for captcha utilities. + * Number of bad login attempts before triggering the captcha. 0 means the + * captcha is presented on the first login. */ -function ceSetup() { - global $wgMessageCache; - $wgMessageCache->addMessage('captcha-short', "Your edit includes new URL links; as a protection - against automated spam, you'll need to enter the answer to this - simple arithmetic test:" ); - SpecialPage::addPage( new SpecialPage( 'Captcha', false, - /*listed*/ false, /*function*/ false, /*file*/ false ) ); -} +global $wgCaptchaBadLoginAttempts; +$wgCaptchaBadLoginAttempts = 3; /** - * Entry point for Special:Captcha + * Regex to whitelist URLs to known-good sites... + * For instance: + * $wgCaptchaWhitelist = '#^https?://([a-z0-9-]+\\.)?(wikimedia|wikipedia)\.org/#i'; + * Local admins can define a whitelist under [[MediaWiki:captcha-addurl-whitelist]] */ -function wfSpecialCaptcha( $par = null ) { - switch( $par ) { - case "image": - return ceShowImage(); - case "help": - default: - return ceShowHelp(); - } -} +$wgCaptchaWhitelist = false; -function ceConfirmEditLinks( &$editPage, $newtext, $section ) { - $oldtext = ceLoadText( $editPage, $section ); - - $oldLinks = ceFindLinks( $oldtext ); - $newLinks = ceFindLinks( $newtext ); - - $addedLinks = array_diff( $newLinks, $oldLinks ); - $numLinks = count( $addedLinks ); - - /* - var_dump( $oldtext ); - var_dump( $newtext ); - var_dump( $oldLinks ); - var_dump( $newLinks ); - var_dump( $addedLinks ); - die( '---' ); - */ - - if( $numLinks > 0 ) { - wfDebug( "ConfirmEdit found $numLinks new links...\n" ); - if( ceKeyMatch() ) { - wfDebug( "ConfirmEdit given proper key from form, passing.\n" ); - return true; - } else { - wfDebug( "ConfirmEdit missing form key, prompting.\n" ); - $editPage->showEditForm( 'ceFormCallback' ); - return false; - } - } else { - wfDebug( "ConfirmEdit: no new links.\n" ); - return true; - } -} +/** + * Additional regexes to check for. Use full regexes; can match things + * other than URLs such as junk edits. + * + * If the new version matches one and the old version doesn't, + * toss up the captcha screen. + * + * @fixme Add a message for local admins to add items as well. + */ +$wgCaptchaRegexes = array(); -function ceKeyMatch() { - global $wgUser; - if( $wgUser->isAllowed( 'skipcaptcha' ) ) { - wfDebug( "ConfirmEdit: user group allows skipping captcha\n" ); - return true; - } +/** Register special page */ +$wgSpecialPages['Captcha'] = array( /*class*/'CaptchaSpecialPage', /*name*/'Captcha' ); - global $wgEmailAuthentication, $ceAllowConfirmedEmail; - if( $wgEmailAuthentication && $ceAllowConfirmedEmail && - $wgUser->isEmailConfirmed() ) { - wfDebug( "ConfirmEdit: user has confirmed mail, skippng captcha\n" ); - return true; - } - - if( !isset( $_SESSION['ceAnswerVar'] ) ) { - wfDebug( "ConfirmEdit no session captcha key set, this is new visitor.\n" ); - return false; - } - global $wgRequest; - return $wgRequest->getVal( $_SESSION['ceAnswerVar'] ) == $_SESSION['ceAnswer']; -} +$wgConfirmEditIP = dirname( __FILE__ ); +$wgExtensionMessagesFiles['ConfirmEdit'] = "$wgConfirmEditIP/ConfirmEdit.i18n.php"; +$wgExtensionAliasesFiles['ConfirmEdit'] = "$wgConfirmEditIP/ConfirmEdit.alias.php"; -function ceFormCallback( &$out ) { - $source = 'ceSource' . mt_rand(); - $dest = 'ceConfirm' . mt_rand(); - - $a = mt_rand(0, 100); - $b = mt_rand(0, 10); - $op = mt_rand(0, 1) ? '+' : '-'; - - $test = "$a $op $b"; - $answer = ($op == '+') ? ($a + $b) : ($a - $b); - $_SESSION['ceAnswer'] = $answer; - $_SESSION['ceAnswerVar'] = $dest; - - - $out->addWikiText( wfMsg( "captcha-short" ) ); - $out->addHTML( <<$test =

-END - ); +if ( defined( 'MW_SUPPORTS_EDITFILTERMERGED' ) ) { + $wgHooks['EditFilterMerged'][] = 'ConfirmEditHooks::confirmEditMerged'; +} else { + $wgHooks['EditFilter'][] = 'ConfirmEditHooks::confirmEdit'; } +$wgHooks['UserCreateForm'][] = 'ConfirmEditHooks::injectUserCreate'; +$wgHooks['AbortNewAccount'][] = 'ConfirmEditHooks::confirmUserCreate'; +$wgHooks['LoginAuthenticateAudit'][] = 'ConfirmEditHooks::triggerUserLogin'; +$wgHooks['UserLoginForm'][] = 'ConfirmEditHooks::injectUserLogin'; +$wgHooks['AbortLogin'][] = 'ConfirmEditHooks::confirmUserLogin'; +# Register API hook +$wgHooks['APIEditBeforeSave'][] = 'ConfirmEditHooks::confirmEditAPI'; + +$wgAutoloadClasses['ConfirmEditHooks'] + = $wgAutoloadClasses['SimpleCaptcha'] + = $wgAutoloadClasses['CaptchaSessionStore'] + = $wgAutoloadClasses['CaptchaCacheStore'] + = $wgAutoloadClasses['CaptchaSpecialPage'] + = "$wgConfirmEditIP/ConfirmEdit_body.php"; -function ceLoadText( $editPage, $section ) { - $rev = Revision::newFromTitle( $editPage->mTitle ); - if( is_null( $rev ) ) { - return ""; - } else { - $text = $rev->getText(); - if( $section != '' ) { - return Article::getSection( $text, $section ); - } else { - return $text; - } - } -} - -function ceFindLinks( $text ) { - $regex = '/((?:' . HTTP_PROTOCOLS . ')' . EXT_LINK_URL_CLASS . '+)/'; - - if( preg_match_all( $regex, $text, $matches, PREG_PATTERN_ORDER ) ) { - return $matches[1]; - } else { - return array(); +/** + * Set up $wgWhitelistRead + */ +function confirmEditSetup() { + global $wgGroupPermissions, $wgCaptchaTriggers; + if ( !$wgGroupPermissions['*']['read'] && $wgCaptchaTriggers['badlogin'] ) { + // We need to ensure that the captcha interface is accessible + // so that unauthenticated users can actually get in after a + // mistaken password typing. + global $wgWhitelistRead; + $image = Title::makeTitle( NS_SPECIAL, 'Captcha/image' ); + $help = Title::makeTitle( NS_SPECIAL, 'Captcha/help' ); + $wgWhitelistRead[] = $image->getPrefixedText(); + $wgWhitelistRead[] = $help->getPrefixedText(); } } - -function ceShowHelp() { - global $wgOut, $ceAllowConfirmedEmail; - $wgOut->setPageTitle( 'Captcha help' ); - $wgOut->addWikiText( <<