* Database error base class
* @ingroup Database
*/
-class DBError extends MWException {
- /** @var DatabaseBase */
+class DBError extends Exception {
+ /** @var IDatabase */
public $db;
/**
* Construct a database error
- * @param DatabaseBase $db Object which threw the error
+ * @param IDatabase $db Object which threw the error
* @param string $error A simple error message to be used for debugging
*/
- function __construct( DatabaseBase $db = null, $error ) {
+ function __construct( IDatabase $db = null, $error ) {
$this->db = $db;
parent::__construct( $error );
}
* @since 1.23
*/
class DBExpectedError extends DBError {
- /**
- * @return string
- */
- function getText() {
- global $wgShowDBErrorBacktrace;
-
- $s = $this->getTextContent() . "\n";
-
- if ( $wgShowDBErrorBacktrace ) {
- $s .= "Backtrace:\n" . $this->getTraceAsString() . "\n";
- }
-
- return $s;
- }
-
- /**
- * @return string
- */
- function getHTML() {
- global $wgShowDBErrorBacktrace;
-
- $s = $this->getHTMLContent();
-
- if ( $wgShowDBErrorBacktrace ) {
- $s .= '<p>Backtrace:</p><pre>' . htmlspecialchars( $this->getTraceAsString() ) . '</pre>';
- }
-
- return $s;
- }
-
- function getPageTitle() {
- return $this->msg( 'databaseerror', 'Database error' );
- }
-
- /**
- * @return string
- */
- protected function getTextContent() {
- return $this->getMessage();
- }
-
- /**
- * @return string
- */
- protected function getHTMLContent() {
- return '<p>' . nl2br( htmlspecialchars( $this->getTextContent() ) ) . '</p>';
- }
}
/**
* @ingroup Database
*/
class DBConnectionError extends DBExpectedError {
- /** @var string Error text */
- public $error;
-
/**
- * @param DatabaseBase $db Object throwing the error
+ * @param IDatabase $db Object throwing the error
* @param string $error Error text
*/
- function __construct( DatabaseBase $db = null, $error = 'unknown error' ) {
- $msg = 'DB connection error';
-
+ function __construct( IDatabase $db = null, $error = 'unknown error' ) {
+ $msg = 'Cannot access the database';
if ( trim( $error ) != '' ) {
$msg .= ": $error";
- } elseif ( $db ) {
- $error = $this->db->getServer();
}
parent::__construct( $db, $msg );
- $this->error = $error;
- }
-
- /**
- * @return bool
- */
- function useOutputPage() {
- // Not likely to work
- return false;
- }
-
- /**
- * @param string $key
- * @param string $fallback Unescaped alternative error text in case the
- * message cache cannot be used. Can contain parameters as in regular
- * messages, that should be passed as additional parameters.
- * @return string Unprocessed plain error text with parameters replaced
- */
- function msg( $key, $fallback /*[, params...] */ ) {
- $args = array_slice( func_get_args(), 2 );
-
- if ( $this->useMessageCache() ) {
- return wfMessage( $key, $args )->useDatabase( false )->text();
- } else {
- return wfMsgReplaceArgs( $fallback, $args );
- }
- }
-
- /**
- * @return bool
- */
- function isLoggable() {
- // Don't send to the exception log, already in dberror log
- return false;
- }
-
- /**
- * @return string Safe HTML
- */
- function getHTML() {
- global $wgShowDBErrorBacktrace, $wgShowHostnames, $wgShowSQLErrors;
-
- $sorry = htmlspecialchars( $this->msg(
- 'dberr-problems',
- 'Sorry! This site is experiencing technical difficulties.'
- ) );
- $again = htmlspecialchars( $this->msg(
- 'dberr-again',
- 'Try waiting a few minutes and reloading.'
- ) );
-
- if ( $wgShowHostnames || $wgShowSQLErrors ) {
- $info = str_replace(
- '$1', Html::element( 'span', array( 'dir' => 'ltr' ), $this->error ),
- htmlspecialchars( $this->msg( 'dberr-info', '(Cannot access the database: $1)' ) )
- );
- } else {
- $info = htmlspecialchars( $this->msg(
- 'dberr-info-hidden',
- '(Cannot access the database)'
- ) );
- }
-
- # No database access
- MessageCache::singleton()->disable();
-
- $html = "<h1>$sorry</h1><p>$again</p><p><small>$info</small></p>";
-
- if ( $wgShowDBErrorBacktrace ) {
- $html .= '<p>Backtrace:</p><pre>' . htmlspecialchars( $this->getTraceAsString() ) . '</pre>';
- }
-
- $html .= '<hr />';
- $html .= $this->searchForm();
-
- return $html;
- }
-
- protected function getTextContent() {
- global $wgShowHostnames, $wgShowSQLErrors;
-
- if ( $wgShowHostnames || $wgShowSQLErrors ) {
- return $this->getMessage();
- } else {
- return 'DB connection error';
- }
- }
-
- /**
- * Output the exception report using HTML.
- *
- * @return void
- */
- public function reportHTML() {
- global $wgUseFileCache;
-
- // Check whether we can serve a file-cached copy of the page with the error underneath
- if ( $wgUseFileCache ) {
- try {
- $cache = $this->fileCachedPage();
- // Cached version on file system?
- if ( $cache !== null ) {
- // Hack: extend the body for error messages
- $cache = str_replace( array( '</html>', '</body>' ), '', $cache );
- // Add cache notice...
- $cache .= '<div style="border:1px solid #ffd0d0;padding:1em;">' .
- htmlspecialchars( $this->msg( 'dberr-cachederror',
- 'This is a cached copy of the requested page, and may not be up to date.' ) ) .
- '</div>';
-
- // Output cached page with notices on bottom and re-close body
- echo "{$cache}<hr />{$this->getHTML()}</body></html>";
-
- return;
- }
- } catch ( Exception $e ) {
- // Do nothing, just use the default page
- }
- }
-
- // We can't, cough and die in the usual fashion
- parent::reportHTML();
- }
-
- /**
- * @return string
- */
- function searchForm() {
- global $wgSitename, $wgCanonicalServer, $wgRequest;
-
- $usegoogle = htmlspecialchars( $this->msg(
- 'dberr-usegoogle',
- 'You can try searching via Google in the meantime.'
- ) );
- $outofdate = htmlspecialchars( $this->msg(
- 'dberr-outofdate',
- 'Note that their indexes of our content may be out of date.'
- ) );
- $googlesearch = htmlspecialchars( $this->msg( 'searchbutton', 'Search' ) );
-
- $search = htmlspecialchars( $wgRequest->getVal( 'search' ) );
-
- $server = htmlspecialchars( $wgCanonicalServer );
- $sitename = htmlspecialchars( $wgSitename );
-
- $trygoogle = <<<EOT
-<div style="margin: 1.5em">$usegoogle<br />
-<small>$outofdate</small>
-</div>
-<form method="get" action="//www.google.com/search" id="googlesearch">
- <input type="hidden" name="domains" value="$server" />
- <input type="hidden" name="num" value="50" />
- <input type="hidden" name="ie" value="UTF-8" />
- <input type="hidden" name="oe" value="UTF-8" />
-
- <input type="text" name="q" size="31" maxlength="255" value="$search" />
- <input type="submit" name="btnG" value="$googlesearch" />
- <p>
- <label><input type="radio" name="sitesearch" value="$server" checked="checked" />$sitename</label>
- <label><input type="radio" name="sitesearch" value="" />WWW</label>
- </p>
-</form>
-EOT;
-
- return $trygoogle;
- }
-
- /**
- * @return string
- */
- private function fileCachedPage() {
- $context = RequestContext::getMain();
-
- if ( $context->getOutput()->isDisabled() ) {
- // Done already?
- return '';
- }
-
- if ( $context->getTitle() ) {
- // Use the main context's title if we managed to set it
- $t = $context->getTitle()->getPrefixedDBkey();
- } else {
- // Fallback to the raw title URL param. We can't use the Title
- // class is it may hit the interwiki table and give a DB error.
- // We may get a cache miss due to not sanitizing the title though.
- $t = str_replace( ' ', '_', $context->getRequest()->getVal( 'title' ) );
- if ( $t == '' ) { // fallback to main page
- $t = Title::newFromText(
- $this->msg( 'mainpage', 'Main Page' ) )->getPrefixedDBkey();
- }
- }
-
- $cache = new HTMLFileCache( $t, 'view' );
- if ( $cache->isCached() ) {
- return $cache->fetchText();
- } else {
- return '';
- }
}
}
* @ingroup Database
*/
class DBQueryError extends DBExpectedError {
- public $error, $errno, $sql, $fname;
+ /** @var string */
+ public $error;
+ /** @var integer */
+ public $errno;
+ /** @var string */
+ public $sql;
+ /** @var string */
+ public $fname;
/**
- * @param DatabaseBase $db
+ * @param IDatabase $db
* @param string $error
* @param int|string $errno
* @param string $sql
* @param string $fname
*/
- function __construct( DatabaseBase $db, $error, $errno, $sql, $fname ) {
- if ( $db->wasConnectionError( $errno ) ) {
+ function __construct( IDatabase $db, $error, $errno, $sql, $fname ) {
+ if ( $db instanceof DatabaseBase && $db->wasConnectionError( $errno ) ) {
$message = "A connection error occured. \n" .
"Query: $sql\n" .
"Function: $fname\n" .
$this->sql = $sql;
$this->fname = $fname;
}
+}
- /**
- * @return string
- */
- function getPageTitle() {
- return $this->msg( 'databaseerror', 'Database error' );
- }
-
- /**
- * @return string
- */
- protected function getHTMLContent() {
- $key = 'databaseerror-text';
- $s = Html::element( 'p', array(), $this->msg( $key, $this->getFallbackMessage( $key ) ) );
-
- $details = $this->getTechnicalDetails();
- if ( $details ) {
- $s .= '<ul>';
- foreach ( $details as $key => $detail ) {
- $s .= str_replace(
- '$1', call_user_func_array( 'Html::element', $detail ),
- Html::element( 'li', array(),
- $this->msg( $key, $this->getFallbackMessage( $key ) )
- )
- );
- }
- $s .= '</ul>';
- }
-
- return $s;
- }
-
- /**
- * @return string
- */
- protected function getTextContent() {
- $key = 'databaseerror-textcl';
- $s = $this->msg( $key, $this->getFallbackMessage( $key ) ) . "\n";
-
- foreach ( $this->getTechnicalDetails() as $key => $detail ) {
- $s .= $this->msg( $key, $this->getFallbackMessage( $key ), $detail[2] ) . "\n";
- }
-
- return $s;
- }
-
- /**
- * Make a list of technical details that can be shown to the user. This information can
- * aid in debugging yet may be useful to an attacker trying to exploit a security weakness
- * in the software or server configuration.
- *
- * Thus no such details are shown by default, though if $wgShowHostnames is true, only the
- * full SQL query is hidden; in fact, the error message often does contain a hostname, and
- * sites using this option probably don't care much about "security by obscurity". Of course,
- * if $wgShowSQLErrors is true, the SQL query *is* shown.
- *
- * @return array Keys are message keys; values are arrays of arguments for Html::element().
- * Array will be empty if users are not allowed to see any of these details at all.
- */
- protected function getTechnicalDetails() {
- global $wgShowHostnames, $wgShowSQLErrors;
-
- $attribs = array( 'dir' => 'ltr' );
- $details = array();
-
- if ( $wgShowSQLErrors ) {
- $details['databaseerror-query'] = array(
- 'div', array( 'class' => 'mw-code' ) + $attribs, $this->sql );
- }
-
- if ( $wgShowHostnames || $wgShowSQLErrors ) {
- $errorMessage = $this->errno . ' ' . $this->error;
- $details['databaseerror-function'] = array( 'code', $attribs, $this->fname );
- $details['databaseerror-error'] = array( 'samp', $attribs, $errorMessage );
- }
-
- return $details;
- }
-
- /**
- * @param string $key Message key
- * @return string English message text
- */
- private function getFallbackMessage( $key ) {
- $messages = array(
- 'databaseerror-text' => 'A database query error has occurred.
-This may indicate a bug in the software.',
- 'databaseerror-textcl' => 'A database query error has occurred.',
- 'databaseerror-query' => 'Query: $1',
- 'databaseerror-function' => 'Function: $1',
- 'databaseerror-error' => 'Error: $1',
- );
+/**
+ * @ingroup Database
+ */
+class DBReadOnlyError extends DBExpectedError {
+}
- return $messages[$key];
- }
+/**
+ * @ingroup Database
+ */
+class DBTransactionError extends DBExpectedError {
}
/**
+ * Exception class for replica DB wait timeouts
* @ingroup Database
*/
-class DBUnexpectedError extends DBError {
+class DBReplicationWaitError extends DBExpectedError {
}
/**
* @ingroup Database
*/
-class DBReadOnlyError extends DBExpectedError {
- function getPageTitle() {
- return $this->msg( 'readonly', 'Database is locked' );
- }
+class DBUnexpectedError extends DBError {
}
/**
+ * Exception class for attempted DB access
* @ingroup Database
*/
-class DBTransactionError extends DBExpectedError {
+class DBAccessError extends DBUnexpectedError {
+ public function __construct() {
+ parent::__construct( "Mediawiki tried to access the database via wfGetDB(). " .
+ "This is not allowed, because database access has been disabled." );
+ }
}
+
dépôts / lhc / web / wiklou.git / blobdiff