<?php
/**
- * This file deals with MySQL interface functions
+ * This file deals with MySQL interface functions
* and query specifics/optimisations
- * @version # $Id$
* @package MediaWiki
*/
*/
require_once( 'CacheManager.php' );
-/** @todo document */
+/** See Database::makeList() */
define( 'LIST_COMMA', 0 );
-/** @todo document */
define( 'LIST_AND', 1 );
-/** @todo document */
define( 'LIST_SET', 2 );
-/** @todo document */
define( 'LIST_NAMES', 3);
+define( 'LIST_OR', 4);
/** Number of times to re-try an operation in case of deadlock */
define( 'DEADLOCK_TRIES', 4 );
/** Maximum time to wait before retry */
define( 'DEADLOCK_DELAY_MAX', 1500000 );
+class DBObject {
+ var $mData;
+
+ function DBObject($data) {
+ $this->mData = $data;
+ }
+
+ function isLOB() {
+ return false;
+ }
+
+ function data() {
+ return $this->mData;
+ }
+};
+
/**
* Database abstraction object
* @package MediaWiki
- * @version # $Id$
*/
class Database {
* @access private
*/
var $mLastQuery = '';
-
- var $mServer, $mUser, $mPassword, $mConn, $mDBname;
+
+ var $mServer, $mUser, $mPassword, $mConn = null, $mDBname;
var $mOut, $mOpened = false;
-
- var $mFailFunction;
+
+ var $mFailFunction;
var $mTablePrefix;
var $mFlags;
var $mTrxLevel = 0;
+ var $mErrorCount = 0;
+ var $mLBInfo = array();
/**#@-*/
#------------------------------------------------------------------------------
# Accessors
#------------------------------------------------------------------------------
# These optionally set a variable and return the previous state
-
+
/**
* Fail function, takes a Database as a parameter
* Set to false for default, 1 for ignore errors
*/
- function failFunction( $function = NULL ) {
- return wfSetVar( $this->mFailFunction, $function );
+ function failFunction( $function = NULL ) {
+ return wfSetVar( $this->mFailFunction, $function );
}
-
+
/**
* Output page, used for reporting errors
* FALSE means discard output
*/
- function &setOutputPage( &$out ) {
- $this->mOut =& $out;
+ function &setOutputPage( &$out ) {
+ $this->mOut =& $out;
}
-
+
/**
* Boolean, controls output of large amounts of debug information
*/
- function debug( $debug = NULL ) {
- return wfSetBit( $this->mFlags, DBO_DEBUG, $debug );
+ function debug( $debug = NULL ) {
+ return wfSetBit( $this->mFlags, DBO_DEBUG, $debug );
}
-
+
/**
* Turns buffering of SQL result sets on (true) or off (false).
* Default is "on" and it should not be changed without good reasons.
if ( is_null( $buffer ) ) {
return !(bool)( $this->mFlags & DBO_NOBUFFER );
} else {
- return !wfSetBit( $this->mFlags, DBO_NOBUFFER, !$buffer );
+ return !wfSetBit( $this->mFlags, DBO_NOBUFFER, !$buffer );
}
}
* code should use wfLastErrno() and wfLastError() to handle the
* situation as appropriate.
*/
- function ignoreErrors( $ignoreErrors = NULL ) {
- return wfSetBit( $this->mFlags, DBO_IGNORE, $ignoreErrors );
+ function ignoreErrors( $ignoreErrors = NULL ) {
+ return wfSetBit( $this->mFlags, DBO_IGNORE, $ignoreErrors );
}
-
+
/**
* The current depth of nested transactions
* @param integer $level
return wfSetVar( $this->mTrxLevel, $level );
}
+ /**
+ * Number of errors logged, only useful when errors are ignored
+ */
+ function errorCount( $count = NULL ) {
+ return wfSetVar( $this->mErrorCount, $count );
+ }
+
+ /**
+ * Properties passed down from the server info array of the load balancer
+ */
+ function getLBInfo( $name = NULL ) {
+ if ( is_null( $name ) ) {
+ return $this->mLBInfo;
+ } else {
+ if ( array_key_exists( $name, $this->mLBInfo ) ) {
+ return $this->mLBInfo[$name];
+ } else {
+ return NULL;
+ }
+ }
+ }
+
+ function setLBInfo( $name, $value = NULL ) {
+ if ( is_null( $value ) ) {
+ $this->mLBInfo = $name;
+ } else {
+ $this->mLBInfo[$name] = $value;
+ }
+ }
+
/**#@+
* Get function
*/
function isOpen() { return $this->mOpened; }
/**#@-*/
+ function setFlag( $flag ) {
+ $this->mFlags |= $flag;
+ }
+
+ function clearFlag( $flag ) {
+ $this->mFlags &= ~$flag;
+ }
+
+ function getFlag( $flag ) {
+ return !!($this->mFlags & $flag);
+ }
+
#------------------------------------------------------------------------------
# Other functions
#------------------------------------------------------------------------------
* @param string $password database user password
* @param string $dbname database name
*/
-
+
/**
* @param failFunction
* @param $flags
* @param string $tablePrefix Database table prefixes. By default use the prefix gave in LocalSettings.php
*/
- function Database( $server = false, $user = false, $password = false, $dbName = false,
+ function Database( $server = false, $user = false, $password = false, $dbName = false,
$failFunction = false, $flags = 0, $tablePrefix = 'get from global' ) {
-
+
global $wgOut, $wgDBprefix, $wgCommandLineMode;
# Can't get a reference if it hasn't been set yet
if ( !isset( $wgOut ) ) {
$this->mFailFunction = $failFunction;
$this->mFlags = $flags;
-
+
if ( $this->mFlags & DBO_DEFAULT ) {
if ( $wgCommandLineMode ) {
$this->mFlags &= ~DBO_TRX;
$this->mFlags |= DBO_TRX;
}
}
-
+
+ /*
+ // Faster read-only access
+ if ( wfReadOnly() ) {
+ $this->mFlags |= DBO_PERSISTENT;
+ $this->mFlags &= ~DBO_TRX;
+ }*/
+
/** Get the default table prefix*/
if ( $tablePrefix == 'get from global' ) {
$this->mTablePrefix = $wgDBprefix;
$this->open( $server, $user, $password, $dbName );
}
}
-
+
/**
* @static
* @param failFunction
* @param $flags
*/
- function newFromParams( $server, $user, $password, $dbName,
+ function newFromParams( $server, $user, $password, $dbName,
$failFunction = false, $flags = 0 )
{
return new Database( $server, $user, $password, $dbName, $failFunction, $flags );
}
-
+
/**
* Usually aborts on failure
* If the failFunction is set to a non-zero integer, returns success
*/
function open( $server, $user, $password, $dbName ) {
+ global $wguname;
+
# Test for missing mysql.so
+ # First try to load it
+ if (!@extension_loaded('mysql')) {
+ @dl('mysql.so');
+ }
+
# Otherwise we get a suppressed fatal error, which is very hard to track down
if ( !function_exists( 'mysql_connect' ) ) {
- die( "MySQL functions missing, have you compiled PHP with the --with-mysql option?\n" );
+ wfDie( "MySQL functions missing, have you compiled PHP with the --with-mysql option?\n" );
}
-
+
$this->close();
$this->mServer = $server;
$this->mUser = $user;
$this->mPassword = $password;
$this->mDBname = $dbName;
-
+
$success = false;
-
- @/**/$this->mConn = mysql_connect( $server, $user, $password );
+
+ if ( $this->mFlags & DBO_PERSISTENT ) {
+ @/**/$this->mConn = mysql_pconnect( $server, $user, $password );
+ } else {
+ # Create a new connection...
+ if( version_compare( PHP_VERSION, '4.2.0', 'ge' ) ) {
+ @/**/$this->mConn = mysql_connect( $server, $user, $password, true );
+ } else {
+ # On PHP 4.1 the new_link parameter is not available. We cannot
+ # guarantee that we'll actually get a new connection, and this
+ # may cause some operations to fail possibly.
+ @/**/$this->mConn = mysql_connect( $server, $user, $password );
+ }
+ }
+
if ( $dbName != '' ) {
if ( $this->mConn !== false ) {
$success = @/**/mysql_select_db( $dbName, $this->mConn );
if ( !$success ) {
- wfDebug( "Error selecting database \"$dbName\": " . $this->lastError() . "\n" );
+ $error = "Error selecting database $dbName on server {$this->mServer} " .
+ "from client host {$wguname['nodename']}\n";
+ wfDebug( $error );
}
} else {
wfDebug( "DB connection error\n" );
- wfDebug( "Server: $server, User: $user, Password: " .
- substr( $password, 0, 3 ) . "...\n" );
+ wfDebug( "Server: $server, User: $user, Password: " .
+ substr( $password, 0, 3 ) . "..., error: " . mysql_error() . "\n" );
$success = false;
}
} else {
# Delay USE query
- $success = !!$this->mConn;
+ $success = (bool)$this->mConn;
}
-
+
if ( !$success ) {
$this->reportConnectionError();
- $this->close();
}
+
+ global $wgDBmysql5;
+ if( $wgDBmysql5 ) {
+ // Tell the server we're communicating with it in UTF-8.
+ // This may engage various charset conversions.
+ $this->query( 'SET NAMES utf8' );
+ }
+
$this->mOpened = $success;
return $success;
}
/**#@-*/
-
+
/**
* Closes a database connection.
* if it is open : commits any open transactions
return true;
}
}
-
+
/**
* @access private
- * @param string $msg error message ?
- * @todo parameter $msg is not used
+ * @param string $error fallback error message, used if none is given by MySQL
*/
- function reportConnectionError( $msg = '') {
+ function reportConnectionError( $error = 'Unknown error' ) {
+ $myError = $this->lastError();
+ if ( $myError ) {
+ $error = $myError;
+ }
+
if ( $this->mFailFunction ) {
if ( !is_int( $this->mFailFunction ) ) {
$ff = $this->mFailFunction;
- $ff( $this, mysql_error() );
+ $ff( $this, $error );
}
} else {
- wfEmergencyAbort( $this, mysql_error() );
+ wfEmergencyAbort( $this, $error );
}
}
-
+
/**
* Usually aborts on failure
* If errors are explicitly ignored, returns success
*/
function query( $sql, $fname = '', $tempIgnore = false ) {
- global $wgProfiling, $wgCommandLineMode;
-
+ global $wgProfiling;
+
if ( $wgProfiling ) {
# generalizeSQL will probably cut down the query to reasonable
# logging size most of the time. The substr is really just a sanity check.
- $profName = 'query: ' . substr( Database::generalizeSQL( $sql ), 0, 255 );
+
+ # Who's been wasting my precious column space? -- TS
+ #$profName = 'query: ' . $fname . ' ' . substr( Database::generalizeSQL( $sql ), 0, 255 );
+ $profName = 'query: ' . substr( Database::generalizeSQL( $sql ), 0, 255 );
+
+ wfProfileIn( 'Database::query' );
wfProfileIn( $profName );
}
-
+
$this->mLastQuery = $sql;
-
- if ( $this->debug() ) {
- $sqlx = substr( $sql, 0, 500 );
- $sqlx = wordwrap(strtr($sqlx,"\t\n",' '));
- wfDebug( "SQL: $sqlx\n" );
- }
+
# Add a comment for easy SHOW PROCESSLIST interpretation
if ( $fname ) {
- $commentedSql = "/* $fname */ $sql";
+ $commentedSql = preg_replace("/\s/", " /* $fname */ ", $sql, 1);
} else {
$commentedSql = $sql;
}
-
+
# If DBO_TRX is set, start a transaction
if ( ( $this->mFlags & DBO_TRX ) && !$this->trxLevel() && $sql != 'BEGIN' ) {
$this->begin();
}
-
+
+ if ( $this->debug() ) {
+ $sqlx = substr( $commentedSql, 0, 500 );
+ $sqlx = strtr( $sqlx, "\t\n", ' ' );
+ wfDebug( "SQL: $sqlx\n" );
+ }
+
# Do the query and handle errors
$ret = $this->doQuery( $commentedSql );
+
+ # Try reconnecting if the connection was lost
+ if ( false === $ret && ( $this->lastErrno() == 2013 || $this->lastErrno() == 2006 ) ) {
+ # Transaction is gone, like it or not
+ $this->mTrxLevel = 0;
+ wfDebug( "Connection lost, reconnecting...\n" );
+ if ( $this->ping() ) {
+ wfDebug( "Reconnected\n" );
+ $ret = $this->doQuery( $commentedSql );
+ } else {
+ wfDebug( "Failed\n" );
+ }
+ }
+
if ( false === $ret ) {
$this->reportQueryError( $this->lastError(), $this->lastErrno(), $sql, $fname, $tempIgnore );
}
-
+
if ( $wgProfiling ) {
wfProfileOut( $profName );
+ wfProfileOut( 'Database::query' );
}
return $ret;
}
-
+
/**
* The DBMS-dependent part of query()
* @param string $sql SQL query.
$ret = mysql_query( $sql, $this->mConn );
} else {
$ret = mysql_unbuffered_query( $sql, $this->mConn );
- }
+ }
return $ret;
}
global $wgCommandLineMode, $wgFullyInitialised;
# Ignore errors during error handling to avoid infinite recursion
$ignore = $this->ignoreErrors( true );
+ ++$this->mErrorCount;
if( $ignore || $tempIgnore ) {
- wfDebug("SQL ERROR (ignored): " . $error . "\n");
+ wfDebug("SQL ERROR (ignored): $error\n");
} else {
$sql1line = str_replace( "\n", "\\n", $sql );
- wfLogDBError("$fname\t$errno\t$error\t$sql1line\n");
+ wfLogDBError("$fname\t{$this->mServer}\t$errno\t$error\t$sql1line\n");
wfDebug("SQL ERROR: " . $error . "\n");
if ( $wgCommandLineMode || !$this->mOut || empty( $wgFullyInitialised ) ) {
$message = "A database error has occurred\n" .
"Query: $sql\n" .
"Function: $fname\n" .
"Error: $errno $error\n";
- if ( !$wgCommandLineMode ) {
+ if ( !$wgCommandLineMode ) {
$message = nl2br( $message );
}
wfDebugDieBacktrace( $message );
} else {
// this calls wfAbruptExit()
- $this->mOut->databaseError( $fname, $sql, $error, $errno );
+ $this->mOut->databaseError( $fname, $sql, $error, $errno );
}
}
$this->ignoreErrors( $ignore );
the bits later. */
return array( 'query' => $sql, 'func' => $func );
}
-
+
function freePrepared( $prepared ) {
/* No-op for MySQL */
}
-
+
/**
* Execute a prepared query with the various arguments
* @param string $prepared the prepared sql
$sql = $this->fillPrepared( $prepared['query'], $args );
return $this->query( $sql, $prepared['func'] );
}
-
+
/**
* Prepare & execute an SQL statement, quoting and inserting arguments
* in the appropriate places.
- * @param
+ * @param string $query
+ * @param string $args ...
*/
function safeQuery( $query, $args = null ) {
$prepared = $this->prepare( $query, 'Database::safeQuery' );
$this->freePrepared( $prepared );
return $retval;
}
-
+
/**
* For faking prepared SQL statements on DBs that don't support
* it directly.
return preg_replace_callback( '/(\\\\[?!&]|[?!&])/',
array( &$this, 'fillPreparedArg' ), $preparedQuery );
}
-
+
/**
* preg_callback func for fillPrepared()
* The arguments should be in $this->preparedArgs and must not be touched
* while we're doing this.
- *
+ *
* @param array $matches
* @return string
* @access private
wfDebugDieBacktrace( 'Received invalid match. This should never happen!' );
}
}
-
+
/**#@+
* @param mixed $res A SQL result
*/
/**
- * @todo document
+ * Free a result object
*/
function freeResult( $res ) {
if ( !@/**/mysql_free_result( $res ) ) {
wfDebugDieBacktrace( "Unable to free MySQL result\n" );
}
}
-
+
/**
- * @todo FIXME: HACK HACK HACK HACK debug
+ * Fetch the next row from the given result object, in object form
*/
function fetchObject( $res ) {
@/**/$row = mysql_fetch_object( $res );
- # FIXME: HACK HACK HACK HACK debug
if( mysql_errno() ) {
wfDebugDieBacktrace( 'Error in fetchObject(): ' . htmlspecialchars( mysql_error() ) );
}
}
/**
- * @todo document
+ * Fetch the next row from the given result object
+ * Returns an array
*/
function fetchRow( $res ) {
@/**/$row = mysql_fetch_array( $res );
wfDebugDieBacktrace( 'Error in fetchRow(): ' . htmlspecialchars( mysql_error() ) );
}
return $row;
- }
+ }
/**
- * @todo document
+ * Get the number of rows in a result object
*/
function numRows( $res ) {
- @/**/$n = mysql_num_rows( $res );
+ @/**/$n = mysql_num_rows( $res );
if( mysql_errno() ) {
wfDebugDieBacktrace( 'Error in numRows(): ' . htmlspecialchars( mysql_error() ) );
}
return $n;
}
-
+
/**
- * @todo document
+ * Get the number of fields in a result object
+ * See documentation for mysql_num_fields()
*/
function numFields( $res ) { return mysql_num_fields( $res ); }
/**
- * @todo document
+ * Get a field name in a result object
+ * See documentation for mysql_field_name()
*/
function fieldName( $res, $n ) { return mysql_field_name( $res, $n ); }
+
/**
- * @todo document
+ * Get the inserted value of an auto-increment row
+ *
+ * The value inserted should be fetched from nextSequenceValue()
+ *
+ * Example:
+ * $id = $dbw->nextSequenceValue('page_page_id_seq');
+ * $dbw->insert('page',array('page_id' => $id));
+ * $id = $dbw->insertId();
*/
function insertId() { return mysql_insert_id( $this->mConn ); }
+
/**
- * @todo document
+ * Change the position of the cursor in a result object
+ * See mysql_data_seek()
*/
function dataSeek( $res, $row ) { return mysql_data_seek( $res, $row ); }
+
/**
- * @todo document
+ * Get the last error number
+ * See mysql_errno()
*/
- function lastErrno() { return mysql_errno(); }
+ function lastErrno() {
+ if ( $this->mConn ) {
+ return mysql_errno( $this->mConn );
+ } else {
+ return mysql_errno();
+ }
+ }
+
/**
- * @todo document
+ * Get a description of the last error
+ * See mysql_error() for more details
*/
- function lastError() { return mysql_error(); }
+ function lastError() {
+ if ( $this->mConn ) {
+ # Even if it's non-zero, it can still be invalid
+ wfSuppressWarnings();
+ $error = mysql_error( $this->mConn );
+ if ( !$error ) {
+ $error = mysql_error();
+ }
+ wfRestoreWarnings();
+ } else {
+ $error = mysql_error();
+ }
+ if( $error ) {
+ $error .= ' (' . $this->mServer . ')';
+ }
+ return $error;
+ }
/**
- * @todo document
+ * Get the number of rows affected by the last write query
+ * See mysql_affected_rows() for more details
*/
function affectedRows() { return mysql_affected_rows( $this->mConn ); }
/**#@-*/ // end of template : @param $result
* Usually aborts on failure
* If errors are explicitly ignored, returns success
*
- * This function exists for historical reasons, Database::update() has a more standard
+ * This function exists for historical reasons, Database::update() has a more standard
* calling convention and feature set
*/
function set( $table, $var, $value, $cond, $fname = 'Database::set' )
$table = $this->tableName( $table );
$sql = "UPDATE $table SET $var = '" .
$this->strencode( $value ) . "' WHERE ($cond)";
- return !!$this->query( $sql, DB_MASTER, $fname );
- }
-
- /**
- * @todo document
- */
- function getField( $table, $var, $cond='', $fname = 'Database::getField', $options = array() ) {
- return $this->selectField( $table, $var, $cond, $fname = 'Database::get', $options = array() );
+ return (bool)$this->query( $sql, $fname );
}
/**
return false;
}
}
-
+
/**
* Returns an optional USE INDEX clause to go after the table, and a
* string to go at the end of the query
+ *
+ * @access private
+ *
+ * @param array $options an associative array of options to be turned into
+ * an SQL query, valid keys are listed in the function.
+ * @return array
*/
function makeSelectOptions( $options ) {
- if ( !is_array( $options ) ) {
- $options = array( $options );
- }
-
$tailOpts = '';
+ if ( isset( $options['GROUP BY'] ) ) {
+ $tailOpts .= " GROUP BY {$options['GROUP BY']}";
+ }
if ( isset( $options['ORDER BY'] ) ) {
$tailOpts .= " ORDER BY {$options['ORDER BY']}";
- }
- if ( isset( $options['LIMIT'] ) ) {
- $tailOpts .= " LIMIT {$options['LIMIT']}";
}
-
+ if (isset($options['LIMIT'])) {
+ $tailOpts .= $this->limitResult('', $options['LIMIT'],
+ isset($options['OFFSET']) ? $options['OFFSET'] : false);
+ }
if ( is_numeric( array_search( 'FOR UPDATE', $options ) ) ) {
$tailOpts .= ' FOR UPDATE';
}
-
+
if ( is_numeric( array_search( 'LOCK IN SHARE MODE', $options ) ) ) {
$tailOpts .= ' LOCK IN SHARE MODE';
}
- if ( isset( $options['USE INDEX'] ) ) {
+ if ( isset( $options['USE INDEX'] ) && ! is_array( $options['USE INDEX'] ) ) {
$useIndex = $this->useIndexClause( $options['USE INDEX'] );
} else {
$useIndex = '';
*/
function select( $table, $vars, $conds='', $fname = 'Database::select', $options = array() )
{
- if ( is_array( $vars ) ) {
+ if( is_array( $vars ) ) {
$vars = implode( ',', $vars );
}
+ if( !is_array( $options ) ) {
+ $options = array( $options );
+ }
if( is_array( $table ) ) {
- $from = ' FROM ' . implode( ',', array_map( array( &$this, 'tableName' ), $table ) );
+ if ( @is_array( $options['USE INDEX'] ) )
+ $from = ' FROM ' . $this->tableNamesWithUseIndex( $table, $options['USE INDEX'] );
+ else
+ $from = ' FROM ' . implode( ',', array_map( array( &$this, 'tableName' ), $table ) );
} elseif ($table!='') {
- $from = ' FROM ' .$this->tableName( $table );
+ $from = ' FROM ' . $this->tableName( $table );
} else {
$from = '';
}
list( $useIndex, $tailOpts ) = $this->makeSelectOptions( $options );
-
- if ( $conds !== false && $conds != '' ) {
+
+ if( !empty( $conds ) ) {
if ( is_array( $conds ) ) {
$conds = $this->makeList( $conds, LIST_AND );
}
} else {
$sql = "SELECT $vars $from $useIndex $tailOpts";
}
+
return $this->query( $sql, $fname );
}
-
- /**
- * @todo document
- */
- function getArray( $table, $vars, $conds, $fname = 'Database::getArray', $options = array() ) {
- return $this->selectRow( $table, $vars, $conds, $fname, $options );
- }
-
/**
* Single row SELECT wrapper
* Aborts or returns FALSE on error
- *
+ *
* $vars: the selected variables
- * $conds: a condition map, terms are ANDed together.
+ * $conds: a condition map, terms are ANDed together.
* Items with numeric keys are taken to be literal conditions
* Takes an array of selected variables, and a condition map, which is ANDed
- * e.g. selectRow( "cur", array( "cur_id" ), array( "cur_namespace" => 0, "cur_title" => "Astronomy" ) )
- * would return an object where $obj->cur_id is the ID of the Astronomy article
+ * e.g: selectRow( "page", array( "page_id" ), array( "page_namespace" =>
+ * NS_MAIN, "page_title" => "Astronomy" ) ) would return an object where
+ * $obj- >page_id is the ID of the Astronomy article
*
* @todo migrate documentation to phpdocumentor format
*/
function selectRow( $table, $vars, $conds, $fname = 'Database::selectRow', $options = array() ) {
$options['LIMIT'] = 1;
$res = $this->select( $table, $vars, $conds, $fname, $options );
- if ( $res === false || !$this->numRows( $res ) ) {
+ if ( $res === false )
+ return false;
+ if ( !$this->numRows($res) ) {
+ $this->freeResult($res);
return false;
}
$obj = $this->fetchObject( $res );
$this->freeResult( $res );
return $obj;
-
+
}
-
+
/**
* Removes most variables from an SQL query and replaces them with X or N for numbers.
* It's only slightly flawed. Don't use for anything important.
* @param string $sql A SQL Query
* @static
*/
- function generalizeSQL( $sql ) {
+ function generalizeSQL( $sql ) {
# This does the same as the regexp below would do, but in such a way
# as to avoid crashing php on some large strings.
# $sql = preg_replace ( "/'([^\\\\']|\\\\.)*'|\"([^\\\\\"]|\\\\.)*\"/", "'X'", $sql);
-
+
$sql = str_replace ( "\\\\", '', $sql);
$sql = str_replace ( "\\'", '', $sql);
$sql = str_replace ( "\\\"", '', $sql);
$sql = preg_replace ("/'.*'/s", "'X'", $sql);
$sql = preg_replace ('/".*"/s', "'X'", $sql);
-
+
# All newlines, tabs, etc replaced by single space
$sql = preg_replace ( "/\s+/", ' ', $sql);
-
- # All numbers => N
+
+ # All numbers => N
$sql = preg_replace ('/-?[0-9]+/s', 'N', $sql);
-
+
return $sql;
}
-
+
/**
* Determines whether a field exists in a table
* Usually aborts on failure
*/
function fieldExists( $table, $field, $fname = 'Database::fieldExists' ) {
$table = $this->tableName( $table );
- $res = $this->query( 'DESCRIBE '.$table, DB_SLAVE, $fname );
+ $res = $this->query( 'DESCRIBE '.$table, $fname );
if ( !$res ) {
return NULL;
}
-
+
$found = false;
-
+
while ( $row = $this->fetchObject( $res ) ) {
if ( $row->Field == $field ) {
$found = true;
}
return $found;
}
-
+
/**
* Determines whether an index exists
* Usually aborts on failure
return $info !== false;
}
}
-
-
+
+
/**
- * @todo document
+ * Get information about an index into an object
+ * Returns false if the index does not exist
*/
function indexInfo( $table, $index, $fname = 'Database::indexInfo' ) {
# SHOW INDEX works in MySQL 3.23.58, but SHOW INDEXES does not.
if ( !$res ) {
return NULL;
}
-
+
while ( $row = $this->fetchObject( $res ) ) {
if ( $row->Key_name == $index ) {
return $row;
}
return false;
}
-
+
/**
- * @param $table
- * @todo document
+ * Query whether a given table exists
*/
function tableExists( $table ) {
$table = $this->tableName( $table );
}
/**
+ * mysql_fetch_field() wrapper
+ * Returns false if the field doesn't exist
+ *
* @param $table
* @param $field
- * @todo document
*/
function fieldInfo( $table, $field ) {
$table = $this->tableName( $table );
}
return false;
}
-
+
/**
- * @todo document
+ * mysql_field_type() wrapper
*/
function fieldType( $res, $index ) {
return mysql_field_type( $res, $index );
}
/**
- * @todo document
+ * Determines if a given index is unique
*/
function indexUnique( $table, $index ) {
$indexInfo = $this->indexInfo( $table, $index );
return !$indexInfo->Non_unique;
}
- /**
- * @todo document
- */
- function insertArray( $table, $a, $fname = 'Database::insertArray', $options = array() ) {
- return $this->insert( $table, $a, $fname, $options );
- }
-
/**
* INSERT wrapper, inserts an array into a table
*
- * $a may be a single associative array, or an array of these with numeric keys, for
+ * $a may be a single associative array, or an array of these with numeric keys, for
* multi-row insert.
*
* Usually aborts on failure
$keys = array_keys( $a );
}
- $sql = 'INSERT ' . implode( ' ', $options ) .
+ $sql = 'INSERT ' . implode( ' ', $options ) .
" INTO $table (" . implode( ',', $keys ) . ') VALUES ';
if ( $multi ) {
} else {
$sql .= '(' . $this->makeList( $a ) . ')';
}
- return !!$this->query( $sql, $fname );
+ return (bool)$this->query( $sql, $fname );
}
/**
- * @todo document
+ * Make UPDATE options for the Database::update function
+ *
+ * @access private
+ * @param array $options The options passed to Database::update
+ * @return string
*/
- function updateArray( $table, $values, $conds, $fname = 'Database::updateArray' ) {
- return $this->update( $table, $values, $conds, $fname );
+ function makeUpdateOptions( $options ) {
+ if( !is_array( $options ) ) {
+ $options = array( $options );
+ }
+ $opts = array();
+ if ( in_array( 'LOW_PRIORITY', $options ) )
+ $opts[] = $this->lowPriorityOption();
+ if ( in_array( 'IGNORE', $options ) )
+ $opts[] = 'IGNORE';
+ return implode(' ', $opts);
}
-
+
/**
* UPDATE wrapper, takes a condition array and a SET array
- */
- function update( $table, $values, $conds, $fname = 'Database::update' ) {
+ *
+ * @param string $table The table to UPDATE
+ * @param array $values An array of values to SET
+ * @param array $conds An array of conditions (WHERE). Use '*' to update all rows.
+ * @param string $fname The Class::Function calling this function
+ * (for the log)
+ * @param array $options An array of UPDATE options, can be one or
+ * more of IGNORE, LOW_PRIORITY
+ */
+ function update( $table, $values, $conds, $fname = 'Database::update', $options = array() ) {
$table = $this->tableName( $table );
- $sql = "UPDATE $table SET " . $this->makeList( $values, LIST_SET );
- $sql .= " WHERE " . $this->makeList( $conds, LIST_AND );
+ $opts = $this->makeUpdateOptions( $options );
+ $sql = "UPDATE $opts $table SET " . $this->makeList( $values, LIST_SET );
+ if ( $conds != '*' ) {
+ $sql .= " WHERE " . $this->makeList( $conds, LIST_AND );
+ }
$this->query( $sql, $fname );
}
-
+
/**
* Makes a wfStrencoded list from an array
* $mode: LIST_COMMA - comma separated, no field names
* LIST_AND - ANDed WHERE clause (without the WHERE)
* LIST_SET - comma separated with field names, like a SET clause
- * LIST_NAMES - comma separated field names
+ * LIST_NAMES - comma separated field names
*/
function makeList( $a, $mode = LIST_COMMA ) {
if ( !is_array( $a ) ) {
if ( !$first ) {
if ( $mode == LIST_AND ) {
$list .= ' AND ';
+ } elseif($mode == LIST_OR) {
+ $list .= ' OR ';
} else {
$list .= ',';
}
} else {
$first = false;
}
- if ( $mode == LIST_AND && is_numeric( $field ) ) {
+ if ( ($mode == LIST_AND || $mode == LIST_OR) && is_numeric( $field ) ) {
$list .= "($value)";
} elseif ( $mode == LIST_AND && is_array ($value) ) {
$list .= $field." IN (".$this->makeList($value).") ";
} else {
- if ( $mode == LIST_AND || $mode == LIST_SET ) {
- $list .= $field.'=';
+ if ( $mode == LIST_AND || $mode == LIST_OR || $mode == LIST_SET ) {
+ $list .= "$field = ";
}
- $list .= ($mode==LIST_NAMES?$value:$this->addQuotes( $value ));
+ $list .= $mode == LIST_NAMES ? $value : $this->addQuotes( $value );
}
}
return $list;
}
-
+
/**
- * @todo document
+ * Change the current database
*/
function selectDB( $db ) {
$this->mDBname = $db;
}
/**
- * @todo document
- */
- function startTimer( $timeout ) {
- global $IP;
- if( function_exists( 'mysql_thread_id' ) ) {
- # This will kill the query if it's still running after $timeout seconds.
- $tid = mysql_thread_id( $this->mConn );
- exec( "php $IP/includes/killthread.php $timeout $tid &>/dev/null &" );
- }
- }
-
- /**
- * Does nothing at all
- * @todo document
- */
- function stopTimer() { }
-
- /**
+ * Format a table name ready for use in constructing an SQL query
+ *
+ * This does two important things: it quotes table names which as necessary,
+ * and it adds a table prefix if there is one.
+ *
+ * All functions of this object which require a table name call this function
+ * themselves. Pass the canonical name to such functions. This is only needed
+ * when calling query() directly.
+ *
* @param string $name database table name
- * @todo document
*/
function tableName( $name ) {
global $wgSharedDB;
- if ( $this->mTablePrefix !== '' ) {
- if ( strpos( '.', $name ) === false ) {
- $name = $this->mTablePrefix . $name;
+ # Skip quoted literals
+ if ( $name{0} != '`' ) {
+ if ( $this->mTablePrefix !== '' && strpos( '.', $name ) === false ) {
+ $name = "{$this->mTablePrefix}$name";
+ }
+ if ( isset( $wgSharedDB ) && "{$this->mTablePrefix}user" == $name ) {
+ $name = "`$wgSharedDB`.`$name`";
+ } else {
+ # Standard quoting
+ $name = "`$name`";
}
- }
- if ( isset( $wgSharedDB ) && 'user' == $name ) {
- $name = $wgSharedDB . '.' . $name;
}
return $name;
}
/**
- * @todo document
+ * Fetch a number of table names into an array
+ * This is handy when you need to construct SQL for joins
+ *
+ * Example:
+ * extract($dbr->tableNames('user','watchlist'));
+ * $sql = "SELECT wl_namespace,wl_title FROM $watchlist,$user
+ * WHERE wl_user=user_id AND wl_user=$nameWithQuotes";
*/
function tableNames() {
$inArray = func_get_args();
}
return $retVal;
}
-
+
+ /**
+ * @access private
+ */
+ function tableNamesWithUseIndex( $tables, $use_index ) {
+ $ret = array();
+
+ foreach ( $tables as $table )
+ if ( @$use_index[$table] !== null )
+ $ret[] = $this->tableName( $table ) . ' ' . $this->useIndexClause( implode( ',', (array)$use_index[$table] ) );
+ else
+ $ret[] = $this->tableName( $table );
+
+ return implode( ',', $ret );
+ }
+
/**
* Wrapper for addslashes()
* @param string $s String to be slashed.
*/
function addQuotes( $s ) {
if ( is_null( $s ) ) {
- $s = 'NULL';
+ return 'NULL';
} else {
# This will also quote numeric values. This should be harmless,
# and protects against weird problems that occur when they really
# _are_ strings such as article titles and string->number->string
# conversion is not 1:1.
- $s = "'" . $this->strencode( $s ) . "'";
- }
+ return "'" . $this->strencode( $s ) . "'";
+ }
+ }
+
+ /**
+ * Escape string for safe LIKE usage
+ */
+ function escapeLike( $s ) {
+ $s=$this->strencode( $s );
+ $s=str_replace(array('%','_'),array('\%','\_'),$s);
return $s;
}
-
+
/**
* Returns an appropriately quoted sequence value for inserting a new row.
* MySQL has autoincrement fields, so this is just NULL. But the PostgreSQL
* PostgreSQL doesn't have them and returns ""
*/
function useIndexClause( $index ) {
- return 'USE INDEX ('.$index.')';
+ return "FORCE INDEX ($index)";
}
/**
* REPLACE query wrapper
* PostgreSQL simulates this with a DELETE followed by INSERT
* $row is the row to insert, an associative array
- * $uniqueIndexes is an array of indexes. Each element may be either a
+ * $uniqueIndexes is an array of indexes. Each element may be either a
* field name or an array of field names
- *
- * It may be more efficient to leave off unique indexes which are unlikely to collide.
- * However if you do this, you run the risk of encountering errors which wouldn't have
+ *
+ * It may be more efficient to leave off unique indexes which are unlikely to collide.
+ * However if you do this, you run the risk of encountering errors which wouldn't have
* occurred in MySQL
*
* @todo migrate comment to phodocumentor format
* DELETE where the condition is a join
* MySQL does this with a multi-table DELETE syntax, PostgreSQL does it with sub-selects
*
- * For safety, an empty $conds will not delete everything. If you want to delete all rows where the
+ * For safety, an empty $conds will not delete everything. If you want to delete all rows where the
* join condition matches, set $conds='*'
*
* DO NOT put the join condition in $conds
if ( $conds != '*' ) {
$sql .= ' AND ' . $this->makeList( $conds, LIST_AND );
}
-
+
return $this->query( $sql, $fname );
}
}
/**
- * @return string Always return 'LOW_PRIORITY'
+ * @return string Returns the text of the low priority option if it is supported, or a blank string otherwise
*/
function lowPriorityOption() {
return 'LOW_PRIORITY';
}
/**
+ * DELETE query wrapper
+ *
* Use $conds == "*" to delete all rows
- * @todo document
*/
function delete( $table, $conds, $fname = 'Database::delete' ) {
if ( !$conds ) {
wfDebugDieBacktrace( 'Database::delete() called with no conditions' );
}
$table = $this->tableName( $table );
- $sql = "DELETE FROM $table ";
+ $sql = "DELETE FROM $table";
if ( $conds != '*' ) {
- $sql .= 'WHERE ' . $this->makeList( $conds, LIST_AND );
+ $sql .= ' WHERE ' . $this->makeList( $conds, LIST_AND );
}
return $this->query( $sql, $fname );
}
* $varMap must be an associative array of the form array( 'dest1' => 'source1', ...)
* Source items may be literals rather than field names, but strings should be quoted with Database::addQuotes()
* $conds may be "*" to copy the whole table
+ * srcTable may be an array of tables.
*/
- function insertSelect( $destTable, $srcTable, $varMap, $conds, $fname = 'Database::insertSelect' ) {
+ function insertSelect( $destTable, $srcTable, $varMap, $conds, $fname = 'Database::insertSelect',
+ $options = array() )
+ {
$destTable = $this->tableName( $destTable );
- $srcTable = $this->tableName( $srcTable );
- $sql = "INSERT INTO $destTable (" . implode( ',', array_keys( $varMap ) ) . ')' .
- ' SELECT ' . implode( ',', $varMap ) .
+ if ( is_array( $options ) ) {
+ $options = implode( ' ', $options );
+ }
+ if( is_array( $srcTable ) ) {
+ $srcTable = implode( ',', array_map( array( &$this, 'tableName' ), $srcTable ) );
+ } else {
+ $srcTable = $this->tableName( $srcTable );
+ }
+ $sql = "INSERT $options INTO $destTable (" . implode( ',', array_keys( $varMap ) ) . ')' .
+ ' SELECT ' . implode( ',', $varMap ) .
" FROM $srcTable";
if ( $conds != '*' ) {
$sql .= ' WHERE ' . $this->makeList( $conds, LIST_AND );
}
/**
- * @todo document
+ * Construct a LIMIT query with optional offset
+ * This is used for query pages
+ * $sql string SQL query we will append the limit too
+ * $limit integer the SQL limit
+ * $offset integer the SQL offset (default false)
*/
- function limitResult($limit,$offset) {
- return ' LIMIT '.(is_numeric($offset)?"{$offset},":"")."{$limit} ";
+ function limitResult($sql, $limit, $offset=false) {
+ return " $sql LIMIT ".((is_numeric($offset) && $offset != 0)?"{$offset},":"")."{$limit} ";
+ }
+ function limitResultForUpdate($sql, $num) {
+ return $this->limitResult($sql, $num, 0);
}
/**
}
/**
- * @todo document
+ * Determines if the last failure was due to a deadlock
*/
function wasDeadlock() {
return $this->lastErrno() == 1213;
}
/**
- * @todo document
+ * Perform a deadlock-prone transaction.
+ *
+ * This function invokes a callback function to perform a set of write
+ * queries. If a deadlock occurs during the processing, the transaction
+ * will be rolled back and the callback function will be called again.
+ *
+ * Usage:
+ * $dbw->deadlockLoop( callback, ... );
+ *
+ * Extra arguments are passed through to the specified callback function.
+ *
+ * Returns whatever the callback function returned on its successful,
+ * iteration, or false on error, for example if the retry limit was
+ * reached.
*/
function deadlockLoop() {
$myFname = 'Database::deadlockLoop';
-
- $this->query( 'BEGIN', $myFname );
+
+ $this->begin();
$args = func_get_args();
$function = array_shift( $args );
- $oldIgnore = $dbw->ignoreErrors( true );
+ $oldIgnore = $this->ignoreErrors( true );
$tries = DEADLOCK_TRIES;
if ( is_array( $function ) ) {
$fname = $function[0];
$error = $this->lastError();
$errno = $this->lastErrno();
$sql = $this->lastQuery();
-
+
if ( $errno ) {
- if ( $dbw->wasDeadlock() ) {
+ if ( $this->wasDeadlock() ) {
# Retry
usleep( mt_rand( DEADLOCK_DELAY_MIN, DEADLOCK_DELAY_MAX ) );
} else {
- $dbw->reportQueryError( $error, $errno, $sql, $fname );
+ $this->reportQueryError( $error, $errno, $sql, $fname );
}
}
- } while( $dbw->wasDeadlock && --$tries > 0 );
+ } while( $this->wasDeadlock() && --$tries > 0 );
$this->ignoreErrors( $oldIgnore );
if ( $tries <= 0 ) {
$this->query( 'ROLLBACK', $myFname );
/**
* Do a SELECT MASTER_POS_WAIT()
- * @todo document
+ *
+ * @param string $file the binlog file
+ * @param string $pos the binlog position
+ * @param integer $timeout the maximum number of seconds to wait for synchronisation
*/
function masterPosWait( $file, $pos, $timeout ) {
+ $fname = 'Database::masterPosWait';
+ wfProfileIn( $fname );
+
+
+ # Commit any open transactions
+ $this->immediateCommit();
+
+ # Call doQuery() directly, to avoid opening a transaction if DBO_TRX is set
$encFile = $this->strencode( $file );
$sql = "SELECT MASTER_POS_WAIT('$encFile', $pos, $timeout)";
- $res = $this->query( $sql, 'Database::masterPosWait' );
+ $res = $this->doQuery( $sql );
if ( $res && $row = $this->fetchRow( $res ) ) {
$this->freeResult( $res );
+ wfProfileOut( $fname );
return $row[0];
} else {
+ wfProfileOut( $fname );
return false;
}
}
return array( false, false );
}
}
-
+
/**
* Get the position of the master from SHOW MASTER STATUS
*/
$this->query( 'BEGIN', $fname );
$this->mTrxLevel = 1;
}
-
+
/**
* Commit transaction, if one is open
*/
function timestamp( $ts=0 ) {
return wfTimestamp(TS_MW,$ts);
}
-
+
+ /**
+ * Local database timestamp format or null
+ */
+ function timestampOrNull( $ts = null ) {
+ if( is_null( $ts ) ) {
+ return null;
+ } else {
+ return $this->timestamp( $ts );
+ }
+ }
+
/**
* @todo document
*/
- function &resultObject( &$result ) {
+ function resultObject( $result ) {
if( empty( $result ) ) {
return NULL;
} else {
function aggregateValue ($valuedata,$valuename='value') {
return $valuename;
}
-
+
/**
* @return string wikitext of a link to the server software's web site
*/
function getSoftwareLink() {
return "[http://www.mysql.com/ MySQL]";
}
-
+
/**
* @return string Version information from the database
*/
function getServerVersion() {
return mysql_get_server_info();
}
-}
+
+ /**
+ * Ping the server and try to reconnect if it there is no connection
+ */
+ function ping() {
+ if( function_exists( 'mysql_ping' ) ) {
+ return mysql_ping( $this->mConn );
+ } else {
+ wfDebug( "Tried to call mysql_ping but this is ancient PHP version. Faking it!\n" );
+ return true;
+ }
+ }
+
+ /**
+ * Get slave lag.
+ * At the moment, this will only work if the DB user has the PROCESS privilege
+ */
+ function getLag() {
+ $res = $this->query( 'SHOW PROCESSLIST' );
+ # Find slave SQL thread. Assumed to be the second one running, which is a bit
+ # dubious, but unfortunately there's no easy rigorous way
+ $slaveThreads = 0;
+ while ( $row = $this->fetchObject( $res ) ) {
+ if ( $row->User == 'system user' ) {
+ if ( ++$slaveThreads == 2 ) {
+ # This is it, return the time (except -ve)
+ if ( $row->Time > 1>>31 ) {
+ return 0;
+ } else {
+ return $row->Time;
+ }
+ }
+ }
+ }
+ return false;
+ }
+
+ /**
+ * Get status information from SHOW STATUS in an associative array
+ */
+ function getStatus($which="%") {
+ $res = $this->query( "SHOW STATUS LIKE '{$which}'" );
+ $status = array();
+ while ( $row = $this->fetchObject( $res ) ) {
+ $status[$row->Variable_name] = $row->Value;
+ }
+ return $status;
+ }
+
+ /**
+ * Return the maximum number of items allowed in a list, or 0 for unlimited.
+ */
+ function maxListLen() {
+ return 0;
+ }
+
+ function encodeBlob($b) {
+ return $b;
+ }
+
+ /**
+ * Read and execute SQL commands from a file.
+ * Returns true on success, error string on failure
+ */
+ function sourceFile( $filename ) {
+ $fp = fopen( $filename, 'r' );
+ if ( false === $fp ) {
+ return "Could not open \"{$fname}\".\n";
+ }
+
+ $cmd = "";
+ $done = false;
+
+ while ( ! feof( $fp ) ) {
+ $line = trim( fgets( $fp, 1024 ) );
+ $sl = strlen( $line ) - 1;
+
+ if ( $sl < 0 ) { continue; }
+ if ( '-' == $line{0} && '-' == $line{1} ) { continue; }
+
+ if ( ';' == $line{$sl} && ($sl < 2 || ';' != $line{$sl - 1})) {
+ $done = true;
+ $line = substr( $line, 0, $sl );
+ }
+
+ if ( '' != $cmd ) { $cmd .= ' '; }
+ $cmd .= "$line\n";
+
+ if ( $done ) {
+ $cmd = str_replace(';;', ";", $cmd);
+ $cmd = $this->replaceVars( $cmd );
+ $res = $this->query( $cmd, 'dbsource', true );
+
+ if ( false === $res ) {
+ $err = $this->lastError();
+ return "Query \"{$cmd}\" failed with error code \"$err\".\n";
+ }
+
+ $cmd = '';
+ $done = false;
+ }
+ }
+ fclose( $fp );
+ return true;
+ }
+
+ /**
+ * Replace variables in sourced SQL
+ */
+ function replaceVars( $ins ) {
+ $varnames = array(
+ 'wgDBserver', 'wgDBname', 'wgDBintlname', 'wgDBuser',
+ 'wgDBpassword', 'wgDBsqluser', 'wgDBsqlpassword',
+ 'wgDBadminuser', 'wgDBadminpassword',
+ );
+
+ // Ordinary variables
+ foreach ( $varnames as $var ) {
+ if( isset( $GLOBALS[$var] ) ) {
+ $val = addslashes( $GLOBALS[$var] );
+ $ins = str_replace( '{$' . $var . '}', $val, $ins );
+ $ins = str_replace( '/*$' . $var . '*/`', '`' . $val, $ins );
+ $ins = str_replace( '/*$' . $var . '*/', $val, $ins );
+ }
+ }
+
+ // Table prefixes
+ $ins = preg_replace_callback( '/\/\*(?:\$wgDBprefix|_)\*\/([a-z_]*)/',
+ array( &$this, 'tableNameCallback' ), $ins );
+ return $ins;
+ }
+
+ /**
+ * Table name callback
+ * @access private
+ */
+ function tableNameCallback( $matches ) {
+ return $this->tableName( $matches[1] );
+ }
+
+}
/**
* Database abstraction object for mySQL
*
* @package MediaWiki
* @see Database
- * @version # $Id$
*/
class DatabaseMysql extends Database {
# Inherit all
* Result wrapper for grabbing data queried by someone else
*
* @package MediaWiki
- * @version # $Id$
*/
class ResultWrapper {
var $db, $result;
-
+
/**
* @todo document
*/
- function ResultWrapper( $database, $result ) {
+ function ResultWrapper( &$database, $result ) {
$this->db =& $database;
$this->result =& $result;
}
function numRows() {
return $this->db->numRows( $this->result );
}
-
+
/**
* @todo document
*/
- function &fetchObject() {
+ function fetchObject() {
return $this->db->fetchObject( $this->result );
}
-
+
/**
* @todo document
*/
function &fetchRow() {
return $this->db->fetchRow( $this->result );
}
-
+
/**
* @todo document
*/
unset( $this->result );
unset( $this->db );
}
+
+ function seek( $row ) {
+ $this->db->dataSeek( $this->result, $row );
+ }
+
}
+
#------------------------------------------------------------------------------
# Global functions
#------------------------------------------------------------------------------
* Displays the file cache if possible
*/
function wfEmergencyAbort( &$conn, $error ) {
- global $wgTitle, $wgUseFileCache, $title, $wgInputEncoding, $wgSiteNotice, $wgOutputEncoding;
-
+ global $wgTitle, $wgUseFileCache, $title, $wgInputEncoding, $wgOutputEncoding;
+ global $wgSitename, $wgServer, $wgMessageCache, $wgLogo;
+
+ # I give up, Brion is right. Getting the message cache to work when there is no DB is tricky.
+ # Hard coding strings instead.
+
+ $noconnect = "<h1><img src='$wgLogo' style='float:left;margin-right:1em' alt=''>$wgSitename has a problem</h1><p><strong>Sorry! This site is experiencing technical difficulties.</strong></p><p>Try waiting a few minutes and reloading.</p><p><small>(Can't contact the database server: $1)</small></p>";
+ $mainpage = 'Main Page';
+ $searchdisabled = <<<EOT
+<p style="margin: 1.5em 2em 1em">$wgSitename search is disabled for performance reasons. You can search via Google in the meantime.
+<span style="font-size: 89%; display: block; margin-left: .2em">Note that their indexes of $wgSitename content may be out of date.</span></p>',
+EOT;
+
+ $googlesearch = "
+<!-- SiteSearch Google -->
+<FORM method=GET action=\"http://www.google.com/search\">
+<TABLE bgcolor=\"#FFFFFF\"><tr><td>
+<A HREF=\"http://www.google.com/\">
+<IMG SRC=\"http://www.google.com/logos/Logo_40wht.gif\"
+border=\"0\" ALT=\"Google\"></A>
+</td>
+<td>
+<INPUT TYPE=text name=q size=31 maxlength=255 value=\"$1\">
+<INPUT type=submit name=btnG VALUE=\"Google Search\">
+<font size=-1>
+<input type=hidden name=domains value=\"$wgServer\"><br /><input type=radio name=sitesearch value=\"\"> WWW <input type=radio name=sitesearch value=\"$wgServer\" checked> $wgServer <br />
+<input type='hidden' name='ie' value='$2'>
+<input type='hidden' name='oe' value='$2'>
+</font>
+</td></tr></TABLE>
+</FORM>
+<!-- SiteSearch Google -->";
+ $cachederror = "The following is a cached copy of the requested page, and may not be up to date. ";
+
+
if( !headers_sent() ) {
header( 'HTTP/1.0 500 Internal Server Error' );
header( 'Content-type: text/html; charset='.$wgOutputEncoding );
header( 'Cache-control: none' );
header( 'Pragma: nocache' );
}
- $msg = $wgSiteNotice;
- if($msg == '') $msg = wfMsgNoDB( 'noconnect', $error );
- $text = $msg;
+
+ # No database access
+ if ( is_object( $wgMessageCache ) ) {
+ $wgMessageCache->disable();
+ }
+
+ if ( trim( $error ) == '' ) {
+ $error = $this->mServer;
+ }
+
+ wfLogDBError( "Connection error: $error\n" );
+
+ $text = str_replace( '$1', $error, $noconnect );
+ $text .= wfGetSiteNotice();
if($wgUseFileCache) {
if($wgTitle) {
$t = Title::newFromURL( $title );
} elseif (@/**/$_REQUEST['search']) {
$search = $_REQUEST['search'];
- echo wfMsgNoDB( 'searchdisabled' );
- echo wfMsgNoDB( 'googlesearch', htmlspecialchars( $search ), $wgInputEncoding );
+ echo $searchdisabled;
+ echo str_replace( array( '$1', '$2' ), array( htmlspecialchars( $search ),
+ $wgInputEncoding ), $googlesearch );
wfErrorExit();
} else {
- $t = Title::newFromText( wfMsgNoDBForContent( 'mainpage' ) );
+ $t = Title::newFromText( $mainpage );
}
}
$cache = new CacheManager( $t );
if( $cache->isFileCached() ) {
$msg = '<p style="color: red"><b>'.$msg."<br />\n" .
- wfMsgNoDB( 'cachederror' ) . "</b></p>\n";
-
+ $cachederror . "</b></p>\n";
+
$tag = '<div id="article">';
$text = str_replace(
$tag,
$cache->fetchPageText() );
}
}
-
+
echo $text;
wfErrorExit();
}
dépôts / lhc / web / wiklou.git / blobdiff