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Tracker.class.php
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Tracker.class.php
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<?php
/* vim: set expandtab sw=4 ts=4 sts=4: */
/**
* Tracking changes on databases, tables and views
*
* @package PhpMyAdmin
*/
if (! defined('PHPMYADMIN')) {
exit;
}
/**
* This class tracks changes on databases, tables and views.
* For more information please see phpMyAdmin/Documentation.html
*
* @package PhpMyAdmin
*
* @todo use stristr instead of strstr
*/
class PMA_Tracker
{
/**
* Whether tracking is ready.
*/
static protected $enabled = false;
/**
* Defines the internal PMA table which contains tracking data.
*
* @access protected
* @var string
*/
static protected $pma_table;
/**
* Defines the usage of DROP TABLE statment in SQL dumps.
*
* @access protected
* @var boolean
*/
static protected $add_drop_table;
/**
* Defines the usage of DROP VIEW statment in SQL dumps.
*
* @access protected
* @var boolean
*/
static protected $add_drop_view;
/**
* Defines the usage of DROP DATABASE statment in SQL dumps.
*
* @access protected
* @var boolean
*/
static protected $add_drop_database;
/**
* Defines auto-creation of tracking versions.
*
* @var boolean
*/
static protected $version_auto_create;
/**
* Defines the default set of tracked statements.
*
* @var string
*/
static protected $default_tracking_set;
/**
* Flags copied from `tracking` column definition in `pma_tracking` table.
* Used for column type conversion in Drizzle.
*
* @var array
*/
static private $_tracking_set_flags = array(
'UPDATE','REPLACE','INSERT','DELETE','TRUNCATE','CREATE DATABASE',
'ALTER DATABASE','DROP DATABASE','CREATE TABLE','ALTER TABLE',
'RENAME TABLE','DROP TABLE','CREATE INDEX','DROP INDEX',
'CREATE VIEW','ALTER VIEW','DROP VIEW'
);
/**
* Initializes settings. See phpMyAdmin/Documentation.html.
*
* @static
*
* @return void
*/
static protected function init()
{
$common_functions = PMA_CommonFunctions::getInstance();
self::$pma_table = $common_functions->backquote($GLOBALS['cfg']['Server']['pmadb']) .".".
$common_functions->backquote($GLOBALS['cfg']['Server']['tracking']);
self::$add_drop_table = $GLOBALS['cfg']['Server']['tracking_add_drop_table'];
self::$add_drop_view = $GLOBALS['cfg']['Server']['tracking_add_drop_view'];
self::$add_drop_database
= $GLOBALS['cfg']['Server']['tracking_add_drop_database'];
self::$default_tracking_set
= $GLOBALS['cfg']['Server']['tracking_default_statements'];
self::$version_auto_create
= $GLOBALS['cfg']['Server']['tracking_version_auto_create'];
}
/**
* Actually enables tracking. This needs to be done after all
* underlaying code is initialized.
*
* @static
*
* @return void
*/
static public function enable()
{
self::$enabled = true;
}
/**
* Gets the on/off value of the Tracker module, starts initialization.
*
* @static
*
* @return boolean (true=on|false=off)
*/
static public function isActive()
{
if (! self::$enabled) {
return false;
}
/* We need to avoid attempt to track any queries
* from PMA_getRelationsParam
*/
self::$enabled = false;
$cfgRelation = PMA_getRelationsParam();
/* Restore original state */
self::$enabled = true;
if (! $cfgRelation['trackingwork']) {
return false;
}
self::init();
if (isset(self::$pma_table)) {
return true;
} else {
return false;
}
}
/**
* Parses the name of a table from a SQL statement substring.
*
* @param string $string part of SQL statement
*
* @static
*
* @return string the name of table
*/
static protected function getTableName($string)
{
if (strstr($string, '.')) {
$temp = explode('.', $string);
$tablename = $temp[1];
} else {
$tablename = $string;
}
$str = explode("\n", $tablename);
$tablename = $str[0];
$tablename = str_replace(';', '', $tablename);
$tablename = str_replace('`', '', $tablename);
$tablename = trim($tablename);
return $tablename;
}
/**
* Gets the tracking status of a table, is it active or deactive ?
*
* @param string $dbname name of database
* @param string $tablename name of table
*
* @static
*
* @return boolean true or false
*/
static public function isTracked($dbname, $tablename)
{
$common_functions = PMA_CommonFunctions::getInstance();
if (! self::$enabled) {
return false;
}
/* We need to avoid attempt to track any queries
* from PMA_getRelationsParam
*/
self::$enabled = false;
$cfgRelation = PMA_getRelationsParam();
/* Restore original state */
self::$enabled = true;
if (! $cfgRelation['trackingwork']) {
return false;
}
$sql_query = " SELECT tracking_active FROM " . self::$pma_table .
" WHERE db_name = '" . $common_functions->sqlAddSlashes($dbname) . "' " .
" AND table_name = '" . $common_functions->sqlAddSlashes($tablename) . "' " .
" ORDER BY version DESC";
$row = PMA_DBI_fetch_array(PMA_queryAsControlUser($sql_query));
if (isset($row['tracking_active']) && $row['tracking_active'] == 1) {
return true;
} else {
return false;
}
}
/**
* Returns the comment line for the log.
*
* @return string Comment, contains date and username
*/
static public function getLogComment()
{
$date = date('Y-m-d H:i:s');
return "# log " . $date . " " . $GLOBALS['cfg']['Server']['user'] . "\n";
}
/**
* Creates tracking version of a table / view
* (in other words: create a job to track future changes on the table).
*
* @param string $dbname name of database
* @param string $tablename name of table
* @param string $version version
* @param string $tracking_set set of tracking statements
* @param bool $is_view if table is a view
*
* @static
*
* @return int result of version insertion
*/
static public function createVersion($dbname, $tablename, $version,
$tracking_set = '', $is_view = false
) {
global $sql_backquotes, $export_type;
$common_functions = PMA_CommonFunctions::getInstance();
if ($tracking_set == '') {
$tracking_set = self::$default_tracking_set;
}
// get Export SQL instance
include_once "libraries/plugin_interface.lib.php";
$export_sql_plugin = PMA_getPlugin(
"export",
"sql",
'libraries/plugins/export/',
array(
'export_type' => $export_type,
'single_table' => isset($single_table)
)
);
$sql_backquotes = true;
$date = date('Y-m-d H:i:s');
// Get data definition snapshot of table
$columns = PMA_DBI_get_columns($dbname, $tablename, null, true);
// int indices to reduce size
$columns = array_values($columns);
// remove Privileges to reduce size
for ($i = 0; $i < count($columns); $i++) {
unset($columns[$i]['Privileges']);
}
$indexes = PMA_DBI_get_table_indexes($dbname, $tablename);
$snapshot = array('COLUMNS' => $columns, 'INDEXES' => $indexes);
$snapshot = serialize($snapshot);
// Get DROP TABLE / DROP VIEW and CREATE TABLE SQL statements
$sql_backquotes = true;
$create_sql = "";
if (self::$add_drop_table == true && $is_view == false) {
$create_sql .= self::getLogComment()
. 'DROP TABLE IF EXISTS ' . $common_functions->backquote($tablename) . ";\n";
}
if (self::$add_drop_view == true && $is_view == true) {
$create_sql .= self::getLogComment()
. 'DROP VIEW IF EXISTS ' . $common_functions->backquote($tablename) . ";\n";
}
$create_sql .= self::getLogComment() .
$export_sql_plugin->getTableDef($dbname, $tablename, "\n", "");
// Save version
$sql_query = "/*NOTRACK*/\n" .
"INSERT INTO" . self::$pma_table . " (" .
"db_name, " .
"table_name, " .
"version, " .
"date_created, " .
"date_updated, " .
"schema_snapshot, " .
"schema_sql, " .
"data_sql, " .
"tracking " .
") " .
"values (
'" . $common_functions->sqlAddSlashes($dbname) . "',
'" . $common_functions->sqlAddSlashes($tablename) . "',
'" . $common_functions->sqlAddSlashes($version) . "',
'" . $common_functions->sqlAddSlashes($date) . "',
'" . $common_functions->sqlAddSlashes($date) . "',
'" . $common_functions->sqlAddSlashes($snapshot) . "',
'" . $common_functions->sqlAddSlashes($create_sql) . "',
'" . $common_functions->sqlAddSlashes("\n") . "',
'" . $common_functions->sqlAddSlashes(self::_transformTrackingSet($tracking_set)) . "' )";
$result = PMA_queryAsControlUser($sql_query);
if ($result) {
// Deactivate previous version
self::deactivateTracking($dbname, $tablename, ($version - 1));
}
return $result;
}
/**
* Removes all tracking data for a table
*
* @param string $dbname name of database
* @param string $tablename name of table
*
* @static
*
* @return int result of version insertion
*/
static public function deleteTracking($dbname, $tablename)
{
$common_functions = PMA_CommonFunctions::getInstance();
$sql_query = "/*NOTRACK*/\n"
. "DELETE FROM " . self::$pma_table
. " WHERE `db_name` = '"
. $common_functions->sqlAddSlashes($dbname) . "'"
. " AND `table_name` = '"
. $common_functions->sqlAddSlashes($tablename) . "'";
$result = PMA_queryAsControlUser($sql_query);
return $result;
}
/**
* Creates tracking version of a database
* (in other words: create a job to track future changes on the database).
*
* @param string $dbname name of database
* @param string $version version
* @param string $query query
* @param string $tracking_set set of tracking statements
*
* @static
*
* @return int result of version insertion
*/
static public function createDatabaseVersion($dbname, $version, $query,
$tracking_set = 'CREATE DATABASE,ALTER DATABASE,DROP DATABASE'
) {
$common_functions = PMA_CommonFunctions::getInstance();
$date = date('Y-m-d H:i:s');
if ($tracking_set == '') {
$tracking_set = self::$default_tracking_set;
}
include_once './libraries/export/sql.php';
$create_sql = "";
if (self::$add_drop_database == true) {
$create_sql .= self::getLogComment()
. 'DROP DATABASE IF EXISTS ' . $common_functions->backquote($dbname) . ";\n";
}
$create_sql .= self::getLogComment() . $query;
// Save version
$sql_query = "/*NOTRACK*/\n" .
"INSERT INTO" . self::$pma_table . " (" .
"db_name, " .
"table_name, " .
"version, " .
"date_created, " .
"date_updated, " .
"schema_snapshot, " .
"schema_sql, " .
"data_sql, " .
"tracking " .
") " .
"values (
'" . $common_functions->sqlAddSlashes($dbname) . "',
'" . $common_functions->sqlAddSlashes('') . "',
'" . $common_functions->sqlAddSlashes($version) . "',
'" . $common_functions->sqlAddSlashes($date) . "',
'" . $common_functions->sqlAddSlashes($date) . "',
'" . $common_functions->sqlAddSlashes('') . "',
'" . $common_functions->sqlAddSlashes($create_sql) . "',
'" . $common_functions->sqlAddSlashes("\n") . "',
'" . $common_functions->sqlAddSlashes(self::_transformTrackingSet($tracking_set)) . "' )";
$result = PMA_queryAsControlUser($sql_query);
return $result;
}
/**
* Changes tracking of a table.
*
* @param string $dbname name of database
* @param string $tablename name of table
* @param string $version version
* @param integer $new_state the new state of tracking
*
* @static
*
* @return int result of SQL query
*/
static private function _changeTracking($dbname, $tablename,
$version, $new_state
) {
$common_functions= PMA_CommonFunctions::getInstance();
$sql_query = " UPDATE " . self::$pma_table .
" SET `tracking_active` = '" . $new_state . "' " .
" WHERE `db_name` = '" . $common_functions->sqlAddSlashes($dbname) . "' " .
" AND `table_name` = '" . $common_functions->sqlAddSlashes($tablename) . "' " .
" AND `version` = '" . $common_functions->sqlAddSlashes($version) . "' ";
$result = PMA_queryAsControlUser($sql_query);
return $result;
}
/**
* Changes tracking data of a table.
*
* @param string $dbname name of database
* @param string $tablename name of table
* @param string $version version
* @param string $type type of data(DDL || DML)
* @param string|array $new_data the new tracking data
*
* @static
*
* @return bool result of change
*/
static public function changeTrackingData($dbname, $tablename,
$version, $type, $new_data
) {
$common_functions = PMA_CommonFunctions::getInstance();
if ($type == 'DDL') {
$save_to = 'schema_sql';
} elseif ($type == 'DML') {
$save_to = 'data_sql';
} else {
return false;
}
$date = date('Y-m-d H:i:s');
$new_data_processed = '';
if (is_array($new_data)) {
foreach ($new_data as $data) {
$new_data_processed .= '# log ' . $date . ' ' . $data['username']
. $common_functions->sqlAddSlashes($data['statement']) . "\n";
}
} else {
$new_data_processed = $new_data;
}
$sql_query = " UPDATE " . self::$pma_table .
" SET `" . $save_to . "` = '" . $new_data_processed . "' " .
" WHERE `db_name` = '" . $common_functions->sqlAddSlashes($dbname) . "' " .
" AND `table_name` = '" . $common_functions->sqlAddSlashes($tablename) . "' " .
" AND `version` = '" . $common_functions->sqlAddSlashes($version) . "' ";
$result = PMA_queryAsControlUser($sql_query);
return $result;
}
/**
* Activates tracking of a table.
*
* @param string $dbname name of database
* @param string $tablename name of table
* @param string $version version
*
* @static
*
* @return int result of SQL query
*/
static public function activateTracking($dbname, $tablename, $version)
{
return self::_changeTracking($dbname, $tablename, $version, 1);
}
/**
* Deactivates tracking of a table.
*
* @param string $dbname name of database
* @param string $tablename name of table
* @param string $version version
*
* @static
*
* @return int result of SQL query
*/
static public function deactivateTracking($dbname, $tablename, $version)
{
return self::_changeTracking($dbname, $tablename, $version, 0);
}
/**
* Gets the newest version of a tracking job
* (in other words: gets the HEAD version).
*
* @param string $dbname name of database
* @param string $tablename name of table
* @param string $statement tracked statement
*
* @static
*
* @return int (-1 if no version exists | > 0 if a version exists)
*/
static public function getVersion($dbname, $tablename, $statement = null)
{
$common_functions = PMA_CommonFunctions::getInstance();
$sql_query = " SELECT MAX(version) FROM " . self::$pma_table .
" WHERE `db_name` = '" . $common_functions->sqlAddSlashes($dbname) . "' " .
" AND `table_name` = '" . $common_functions->sqlAddSlashes($tablename) . "' ";
if ($statement != "") {
$sql_query .= PMA_DRIZZLE
? ' AND tracking & ' . self::_transformTrackingSet($statement) . ' <> 0'
: " AND FIND_IN_SET('" . $statement . "',tracking) > 0" ;
}
$row = PMA_DBI_fetch_array(PMA_queryAsControlUser($sql_query));
return isset($row[0])
? $row[0]
: -1;
}
/**
* Gets the record of a tracking job.
*
* @param string $dbname name of database
* @param string $tablename name of table
* @param string $version version number
*
* @static
*
* @return mixed record DDM log, DDL log, structure snapshot, tracked statements.
*/
static public function getTrackedData($dbname, $tablename, $version)
{
$common_functions = PMA_CommonFunctions::getInstance();
if (! isset(self::$pma_table)) {
self::init();
}
$sql_query = " SELECT * FROM " . self::$pma_table .
" WHERE `db_name` = '" . $common_functions->sqlAddSlashes($dbname) . "' ";
if (! empty($tablename)) {
$sql_query .= " AND `table_name` = '"
. $common_functions->sqlAddSlashes($tablename) ."' ";
}
$sql_query .= " AND `version` = '" . $common_functions->sqlAddSlashes($version) ."' ".
" ORDER BY `version` DESC LIMIT 1";
$mixed = PMA_DBI_fetch_assoc(PMA_queryAsControlUser($sql_query));
// Parse log
$log_schema_entries = explode('# log ', $mixed['schema_sql']);
$log_data_entries = explode('# log ', $mixed['data_sql']);
$ddl_date_from = $date = date('Y-m-d H:i:s');
$ddlog = array();
$i = 0;
// Iterate tracked data definition statements
// For each log entry we want to get date, username and statement
foreach ($log_schema_entries as $log_entry) {
if (trim($log_entry) != '') {
$date = substr($log_entry, 0, 19);
$username = substr($log_entry, 20, strpos($log_entry, "\n") - 20);
if ($i == 0) {
$ddl_date_from = $date;
}
$statement = rtrim(strstr($log_entry, "\n"));
$ddlog[] = array( 'date' => $date,
'username'=> $username,
'statement' => $statement );
$i++;
}
}
$date_from = $ddl_date_from;
$date_to = $ddl_date_to = $date;
$dml_date_from = $date_from;
$dmlog = array();
$i = 0;
// Iterate tracked data manipulation statements
// For each log entry we want to get date, username and statement
foreach ($log_data_entries as $log_entry) {
if (trim($log_entry) != '') {
$date = substr($log_entry, 0, 19);
$username = substr($log_entry, 20, strpos($log_entry, "\n") - 20);
if ($i == 0) {
$dml_date_from = $date;
}
$statement = rtrim(strstr($log_entry, "\n"));
$dmlog[] = array( 'date' => $date,
'username' => $username,
'statement' => $statement );
$i++;
}
}
$dml_date_to = $date;
// Define begin and end of date range for both logs
if (strtotime($ddl_date_from) <= strtotime($dml_date_from)) {
$data['date_from'] = $ddl_date_from;
} else {
$data['date_from'] = $dml_date_from;
}
if (strtotime($ddl_date_to) >= strtotime($dml_date_to)) {
$data['date_to'] = $ddl_date_to;
} else {
$data['date_to'] = $dml_date_to;
}
$data['ddlog'] = $ddlog;
$data['dmlog'] = $dmlog;
$data['tracking'] = self::_transformTrackingSet($mixed['tracking']);
$data['schema_snapshot'] = $mixed['schema_snapshot'];
return $data;
}
/**
* Parses a query. Gets
* - statement identifier (UPDATE, ALTER TABLE, ...)
* - type of statement, is it part of DDL or DML ?
* - tablename
*
* @param string $query query
*
* @static
* @todo: using PMA SQL Parser when possible
* @todo: support multi-table/view drops
*
* @return mixed Array containing identifier, type and tablename.
*
*/
static public function parseQuery($query)
{
// Usage of PMA_SQP does not work here
//
// require_once("libraries/sqlparser.lib.php");
// $parsed_sql = PMA_SQP_parse($query);
// $sql_info = PMA_SQP_analyze($parsed_sql);
$query = str_replace("\n", " ", $query);
$query = str_replace("\r", " ", $query);
$query = trim($query);
$query = trim($query, ' -');
$tokens = explode(" ", $query);
foreach ($tokens as $key => $value) {
$tokens[$key] = strtoupper($value);
}
// Parse USE statement, need it for SQL dump imports
if (substr($query, 0, 4) == 'USE ') {
$prefix = explode('USE ', $query);
$GLOBALS['db'] = self::getTableName($prefix[1]);
}
/*
* DDL statements
*/
$result['type'] = 'DDL';
// Parse CREATE VIEW statement
if (in_array('CREATE', $tokens) == true
&& in_array('VIEW', $tokens) == true
&& in_array('AS', $tokens) == true
) {
$result['identifier'] = 'CREATE VIEW';
$index = array_search('VIEW', $tokens);
$result['tablename'] = strtolower(
self::getTableName($tokens[$index + 1])
);
}
// Parse ALTER VIEW statement
if (in_array('ALTER', $tokens) == true
&& in_array('VIEW', $tokens) == true
&& in_array('AS', $tokens) == true
&& ! isset($result['identifier'])
) {
$result['identifier'] = 'ALTER VIEW';
$index = array_search('VIEW', $tokens);
$result['tablename'] = strtolower(
self::getTableName($tokens[$index + 1])
);
}
// Parse DROP VIEW statement
if (! isset($result['identifier'])
&& substr($query, 0, 10) == 'DROP VIEW '
) {
$result['identifier'] = 'DROP VIEW';
$prefix = explode('DROP VIEW ', $query);
$str = strstr($prefix[1], 'IF EXISTS');
if ($str == false ) {
$str = $prefix[1];
}
$result['tablename'] = self::getTableName($str);
}
// Parse CREATE DATABASE statement
if (! isset($result['identifier'])
&& substr($query, 0, 15) == 'CREATE DATABASE'
) {
$result['identifier'] = 'CREATE DATABASE';
$str = str_replace('CREATE DATABASE', '', $query);
$str = str_replace('IF NOT EXISTS', '', $str);
$prefix = explode('DEFAULT ', $str);
$result['tablename'] = '';
$GLOBALS['db'] = self::getTableName($prefix[0]);
}
// Parse ALTER DATABASE statement
if (! isset($result['identifier'])
&& substr($query, 0, 14) == 'ALTER DATABASE'
) {
$result['identifier'] = 'ALTER DATABASE';
$result['tablename'] = '';
}
// Parse DROP DATABASE statement
if (! isset($result['identifier'])
&& substr($query, 0, 13) == 'DROP DATABASE'
) {
$result['identifier'] = 'DROP DATABASE';
$str = str_replace('DROP DATABASE', '', $query);
$str = str_replace('IF EXISTS', '', $str);
$GLOBALS['db'] = self::getTableName($str);
$result['tablename'] = '';
}
// Parse CREATE TABLE statement
if (! isset($result['identifier'])
&& substr($query, 0, 12) == 'CREATE TABLE'
) {
$result['identifier'] = 'CREATE TABLE';
$query = str_replace('IF NOT EXISTS', '', $query);
$prefix = explode('CREATE TABLE ', $query);
$suffix = explode('(', $prefix[1]);
$result['tablename'] = self::getTableName($suffix[0]);
}
// Parse ALTER TABLE statement
if (! isset($result['identifier'])
&& substr($query, 0, 12) == 'ALTER TABLE '
) {
$result['identifier'] = 'ALTER TABLE';
$prefix = explode('ALTER TABLE ', $query);
$suffix = explode(' ', $prefix[1]);
$result['tablename'] = self::getTableName($suffix[0]);
}
// Parse DROP TABLE statement
if (! isset($result['identifier'])
&& substr($query, 0, 11) == 'DROP TABLE '
) {
$result['identifier'] = 'DROP TABLE';
$prefix = explode('DROP TABLE ', $query);
$str = strstr($prefix[1], 'IF EXISTS');
if ($str == false ) {
$str = $prefix[1];
}
$result['tablename'] = self::getTableName($str);
}
// Parse CREATE INDEX statement
if (! isset($result['identifier'])
&& (substr($query, 0, 12) == 'CREATE INDEX'
|| substr($query, 0, 19) == 'CREATE UNIQUE INDEX'
|| substr($query, 0, 20) == 'CREATE SPATIAL INDEX')
) {
$result['identifier'] = 'CREATE INDEX';
$prefix = explode('ON ', $query);
$suffix = explode('(', $prefix[1]);
$result['tablename'] = self::getTableName($suffix[0]);
}
// Parse DROP INDEX statement
if (! isset($result['identifier'])
&& substr($query, 0, 10) == 'DROP INDEX'
) {
$result['identifier'] = 'DROP INDEX';
$prefix = explode('ON ', $query);
$result['tablename'] = self::getTableName($prefix[1]);
}
// Parse RENAME TABLE statement
if (! isset($result['identifier'])
&& substr($query, 0, 13) == 'RENAME TABLE '
) {
$result['identifier'] = 'RENAME TABLE';
$prefix = explode('RENAME TABLE ', $query);
$names = explode(' TO ', $prefix[1]);
$result['tablename'] = self::getTableName($names[0]);
$result["tablename_after_rename"] = self::getTableName($names[1]);
}
/*
* DML statements
*/
if (! isset($result['identifier'])) {
$result["type"] = 'DML';
}
// Parse UPDATE statement
if (! isset($result['identifier'])
&& substr($query, 0, 6) == 'UPDATE'
) {
$result['identifier'] = 'UPDATE';
$prefix = explode('UPDATE ', $query);
$suffix = explode(' ', $prefix[1]);
$result['tablename'] = self::getTableName($suffix[0]);
}
// Parse INSERT INTO statement
if (! isset($result['identifier'])
&& substr($query, 0, 11) == 'INSERT INTO'
) {
$result['identifier'] = 'INSERT';
$prefix = explode('INSERT INTO', $query);
$suffix = explode('(', $prefix[1]);
$result['tablename'] = self::getTableName($suffix[0]);
}
// Parse DELETE statement
if (! isset($result['identifier'])
&& substr($query, 0, 6) == 'DELETE'
) {
$result['identifier'] = 'DELETE';
$prefix = explode('FROM ', $query);
$suffix = explode(' ', $prefix[1]);
$result['tablename'] = self::getTableName($suffix[0]);
}
// Parse TRUNCATE statement
if (! isset($result['identifier'])
&& substr($query, 0, 8) == 'TRUNCATE'
) {
$result['identifier'] = 'TRUNCATE';
$prefix = explode('TRUNCATE', $query);
$result['tablename'] = self::getTableName($prefix[1]);
}
return $result;
}
/**
* Analyzes a given SQL statement and saves tracking data.
*
* @param string $query a SQL query
*
* @static
*
* @return void
*/
static public function handleQuery($query)
{
$common_functions = PMA_CommonFunctions::getInstance();
// If query is marked as untouchable, leave
if (strstr($query, "/*NOTRACK*/")) {
return;
}
if (! (substr($query, -1) == ';')) {
$query = $query . ";\n";
}
// Get some information about query
$result = self::parseQuery($query);
// Get database name
$dbname = trim(isset($GLOBALS['db']) ? $GLOBALS['db'] : '', '`');
// $dbname can be empty, for example when coming from Synchronize
// and this is a query for the remote server
if (empty($dbname)) {
return;
}
// If we found a valid statement
if (isset($result['identifier'])) {
$version = self::getVersion(
$dbname, $result['tablename'], $result['identifier']
);
// If version not exists and auto-creation is enabled
if (self::$version_auto_create == true
&& self::isTracked($dbname, $result['tablename']) == false
&& $version == -1
) {
// Create the version
switch ($result['identifier']) {
case 'CREATE TABLE':
self::createVersion($dbname, $result['tablename'], '1');
break;
case 'CREATE VIEW':
self::createVersion(
$dbname, $result['tablename'], '1', '', true
);
break;
case 'CREATE DATABASE':
self::createDatabaseVersion($dbname, '1', $query);
break;
} // end switch
}
// If version exists
if (self::isTracked($dbname, $result['tablename']) && $version != -1) {
if ($result['type'] == 'DDL') {
$save_to = 'schema_sql';