phpmyadmin/libraries/classes/DatabaseInterface.php
Kamil Tekiela 56a832948c
Refactor DatabaseInterface.php (#17209)
* Use str_starts_with()

Signed-off-by: Kamil Tekiela <tekiela246@gmail.com>

* Remove redundant !empty()

!empty() on a declared variable is redundant.

Signed-off-by: Kamil Tekiela <tekiela246@gmail.com>

* Replace loop with array_column()

Signed-off-by: Kamil Tekiela <tekiela246@gmail.com>

* Simpify assignment by removing temporary variable

Signed-off-by: Kamil Tekiela <tekiela246@gmail.com>

* Remove redundant if statements and array_merge

Signed-off-by: Kamil Tekiela <tekiela246@gmail.com>

* Remove temporary variable

Signed-off-by: Kamil Tekiela <tekiela246@gmail.com>

* Unindent code

Signed-off-by: Kamil Tekiela <tekiela246@gmail.com>

* Add helper method fetchByMode()

This is done to avoid calling methods through variables. It is the same
in terms of performance.

Signed-off-by: Kamil Tekiela <tekiela246@gmail.com>

* Move if statements to where they are relevant

I had a choice to either move the while loop out of the if statements
or move the if statements inside. I decided it made more sense to move
them inside.

Signed-off-by: Kamil Tekiela <tekiela246@gmail.com>

* Add NULL to phpdoc for the two parameters that can be null

Signed-off-by: Kamil Tekiela <tekiela246@gmail.com>

* Simplify return statement

Signed-off-by: Kamil Tekiela <tekiela246@gmail.com>

* Improve performance and simplify code

Since we are always using STORE mode then we can use data_seek() method.
This will allow us to get rid of the loop and use fetchByMode() method.

Signed-off-by: Kamil Tekiela <tekiela246@gmail.com>

* Inline value defaulting

Signed-off-by: Kamil Tekiela <tekiela246@gmail.com>

* Remove redundant check

Signed-off-by: Kamil Tekiela <tekiela246@gmail.com>

* [bugfix] getColumnNames() should return an array of strings

There were multiple issues here. If we are selecting only a certain
column from the SQL then let's use the handy function instead of
array_keys. We will never get anything other than an array so checking
if it is not an array makes no sense. Returning null only to cast it to
an array is pointless. If really necessary, we could still check for an
empty array. The ColumnController returned the value without even
casting it to an array. I am not sure how jQuery/JavaScript dealt with it.

Signed-off-by: Kamil Tekiela <tekiela246@gmail.com>

* Refactor getColumnMapFromSql and add type hint

Signed-off-by: Kamil Tekiela <tekiela246@gmail.com>

* Refactor getVirtualTables

Signed-off-by: Kamil Tekiela <tekiela246@gmail.com>

* Remove redundant loop

Signed-off-by: Kamil Tekiela <tekiela246@gmail.com>

* Remove redundant usage of freeResult()

If there was no chance for the object to leak the scope and it is the
end of the scope then there's no reason to call this method.

Signed-off-by: Kamil Tekiela <tekiela246@gmail.com>

* Replace dynamic variable with declare one

It's always the same name. If we were creating more than one, we could
use associative array, but in this case there seems to be absolutely no
need for any of this. Dynamic variables make it harder to debug the code.

Signed-off-by: Kamil Tekiela <tekiela246@gmail.com>

* Update psalm-baseline.xml

Signed-off-by: Kamil Tekiela <tekiela246@gmail.com>

* Widen the condition per williamdes suggestion

This will allow value such as '' and '0' to pass through. Previously
`if(! empty($database))` and `if($database)` dissallowed them.

Signed-off-by: Kamil Tekiela <tekiela246@gmail.com>

* fetchResult() should return only arrays

Tests fixed to return arrays. Non-empty in case of true, empty in case
of false.
Fixed a lot of Psalm issues where the condition was always true.

Signed-off-by: Kamil Tekiela <tekiela246@gmail.com>
2021-11-26 20:17:46 -03:00

2422 lines
74 KiB
PHP

<?php
/**
* Main interface for database interactions
*/
declare(strict_types=1);
namespace PhpMyAdmin;
use PhpMyAdmin\Database\DatabaseList;
use PhpMyAdmin\Dbal\DatabaseName;
use PhpMyAdmin\Dbal\DbalInterface;
use PhpMyAdmin\Dbal\DbiExtension;
use PhpMyAdmin\Dbal\DbiMysqli;
use PhpMyAdmin\Dbal\Warning;
use PhpMyAdmin\Html\Generator;
use PhpMyAdmin\Query\Cache;
use PhpMyAdmin\Query\Compatibility;
use PhpMyAdmin\Query\Generator as QueryGenerator;
use PhpMyAdmin\Query\Utilities;
use PhpMyAdmin\SqlParser\Context;
use PhpMyAdmin\Utils\SessionCache;
use function __;
use function array_column;
use function array_diff;
use function array_keys;
use function array_map;
use function array_merge;
use function array_multisort;
use function array_reverse;
use function array_shift;
use function array_slice;
use function basename;
use function closelog;
use function count;
use function defined;
use function explode;
use function implode;
use function in_array;
use function is_array;
use function is_int;
use function is_string;
use function mb_strtolower;
use function microtime;
use function openlog;
use function reset;
use function sprintf;
use function str_contains;
use function str_starts_with;
use function stripos;
use function strlen;
use function strtolower;
use function strtoupper;
use function substr;
use function syslog;
use function trigger_error;
use function uasort;
use function uksort;
use function usort;
use const E_USER_WARNING;
use const LOG_INFO;
use const LOG_NDELAY;
use const LOG_PID;
use const LOG_USER;
use const SORT_ASC;
use const SORT_DESC;
/**
* Main interface for database interactions
*/
class DatabaseInterface implements DbalInterface
{
/**
* Force STORE_RESULT method, ignored by classic MySQL.
*/
public const QUERY_STORE = 1;
/**
* Do not read whole query.
*/
public const QUERY_UNBUFFERED = 2;
/**
* Get session variable.
*/
public const GETVAR_SESSION = 1;
/**
* Get global variable.
*/
public const GETVAR_GLOBAL = 2;
/**
* User connection.
*/
public const CONNECT_USER = 0x100;
/**
* Control user connection.
*/
public const CONNECT_CONTROL = 0x101;
/**
* Auxiliary connection.
*
* Used for example for replication setup.
*/
public const CONNECT_AUXILIARY = 0x102;
/** @var DbiExtension */
private $extension;
/**
* Opened database links
*
* @var array
*/
private $links;
/** @var array Current user and host cache */
private $currentUser;
/** @var string|null lower_case_table_names value cache */
private $lowerCaseTableNames = null;
/** @var bool Whether connection is MariaDB */
private $isMariaDb = false;
/** @var bool Whether connection is Percona */
private $isPercona = false;
/** @var int Server version as number */
private $versionInt = 55000;
/** @var string Server version */
private $versionString = '5.50.0';
/** @var string Server version comment */
private $versionComment = '';
/** @var Types MySQL types data */
public $types;
/** @var Relation */
private $relation;
/** @var Cache */
private $cache;
/**
* @param DbiExtension $ext Object to be used for database queries
*/
public function __construct(DbiExtension $ext)
{
$this->extension = $ext;
$this->links = [];
if (defined('TESTSUITE')) {
$this->links[self::CONNECT_USER] = 1;
$this->links[self::CONNECT_CONTROL] = 2;
}
$this->currentUser = [];
$this->cache = new Cache();
$this->types = new Types($this);
$this->relation = new Relation($this);
}
/**
* runs a query
*
* @param string $query SQL query to execute
* @param mixed $link optional database link to use
* @param int $options optional query options
* @param bool $cache_affected_rows whether to cache affected rows
*
* @return mixed
*/
public function query(
string $query,
$link = self::CONNECT_USER,
int $options = 0,
bool $cache_affected_rows = true
) {
$result = $this->tryQuery($query, $link, $options, $cache_affected_rows);
if (! $result) {
Generator::mysqlDie($this->getError($link), $query);
return false;
}
return $result;
}
public function getCache(): Cache
{
return $this->cache;
}
/**
* runs a query and returns the result
*
* @param string $query query to run
* @param mixed $link link type
* @param int $options query options
* @param bool $cache_affected_rows whether to cache affected row
*
* @return mixed
*/
public function tryQuery(
string $query,
$link = self::CONNECT_USER,
int $options = 0,
bool $cache_affected_rows = true
) {
$debug = isset($GLOBALS['cfg']['DBG']) ? $GLOBALS['cfg']['DBG']['sql'] : false;
if (! isset($this->links[$link])) {
return false;
}
$time = 0;
if ($debug) {
$time = microtime(true);
}
$result = $this->extension->realQuery($query, $this->links[$link], $options);
if ($cache_affected_rows) {
$GLOBALS['cached_affected_rows'] = $this->affectedRows($link, false);
}
if ($debug) {
$time = microtime(true) - $time;
$errorMessage = $this->getError($link);
Utilities::debugLogQueryIntoSession(
$query,
is_string($errorMessage) ? $errorMessage : null,
$result,
$time
);
if ($GLOBALS['cfg']['DBG']['sqllog']) {
$warningsCount = '';
if (($options & self::QUERY_STORE) == self::QUERY_STORE) {
if (isset($this->links[$link]->warning_count)) {
$warningsCount = $this->links[$link]->warning_count;
}
}
openlog('phpMyAdmin', LOG_NDELAY | LOG_PID, LOG_USER);
syslog(
LOG_INFO,
sprintf(
'SQL[%s?route=%s]: %0.3f(W:%s,C:%s,L:0x%02X) > %s',
basename($_SERVER['SCRIPT_NAME']),
Routing::getCurrentRoute(),
$time,
$warningsCount,
$cache_affected_rows ? 'y' : 'n',
$link,
$query
)
);
closelog();
}
}
if ($result !== false && Tracker::isActive()) {
Tracker::handleQuery($query);
}
return $result;
}
/**
* Send multiple SQL queries to the database server and execute the first one
*
* @param string $multiQuery multi query statement to execute
* @param int $linkIndex index of the opened database link
*/
public function tryMultiQuery(
string $multiQuery = '',
$linkIndex = self::CONNECT_USER
): bool {
if (! isset($this->links[$linkIndex])) {
return false;
}
return $this->extension->realMultiQuery($this->links[$linkIndex], $multiQuery);
}
/**
* returns array with table names for given db
*
* @param string $database name of database
* @param mixed $link mysql link resource|object
*
* @return array tables names
*/
public function getTables(string $database, $link = self::CONNECT_USER): array
{
$tables = $this->fetchResult(
'SHOW TABLES FROM ' . Util::backquote($database) . ';',
null,
0,
$link,
self::QUERY_STORE
);
if ($GLOBALS['cfg']['NaturalOrder']) {
usort($tables, 'strnatcasecmp');
}
return $tables;
}
/**
* returns array of all tables in given db or dbs
* this function expects unquoted names:
* RIGHT: my_database
* WRONG: `my_database`
* WRONG: my\_database
* if $tbl_is_group is true, $table is used as filter for table names
*
* <code>
* $dbi->getTablesFull('my_database');
* $dbi->getTablesFull('my_database', 'my_table'));
* $dbi->getTablesFull('my_database', 'my_tables_', true));
* </code>
*
* @param string $database database
* @param string|array $table table name(s)
* @param bool $tbl_is_group $table is a table group
* @param int $limit_offset zero-based offset for the count
* @param bool|int $limit_count number of tables to return
* @param string $sort_by table attribute to sort by
* @param string $sort_order direction to sort (ASC or DESC)
* @param string $table_type whether table or view
* @param mixed $link link type
*
* @return array list of tables in given db(s)
*
* @todo move into Table
*/
public function getTablesFull(
string $database,
$table = '',
bool $tbl_is_group = false,
int $limit_offset = 0,
$limit_count = false,
string $sort_by = 'Name',
string $sort_order = 'ASC',
?string $table_type = null,
$link = self::CONNECT_USER
): array {
if ($limit_count === true) {
$limit_count = $GLOBALS['cfg']['MaxTableList'];
}
$tables = [];
if (! $GLOBALS['cfg']['Server']['DisableIS']) {
$sql_where_table = QueryGenerator::getTableCondition(
is_array($table) ? array_map(
[
$this,
'escapeString',
],
$table
) : $this->escapeString($table),
$tbl_is_group,
$table_type
);
// for PMA bc:
// `SCHEMA_FIELD_NAME` AS `SHOW_TABLE_STATUS_FIELD_NAME`
//
// on non-Windows servers,
// added BINARY in the WHERE clause to force a case sensitive
// comparison (if we are looking for the db Aa we don't want
// to find the db aa)
$sql = QueryGenerator::getSqlForTablesFull([$this->escapeString($database)], $sql_where_table);
// Sort the tables
$sql .= ' ORDER BY ' . $sort_by . ' ' . $sort_order;
if ($limit_count) {
$sql .= ' LIMIT ' . $limit_count . ' OFFSET ' . $limit_offset;
}
$tables = $this->fetchResult(
$sql,
[
'TABLE_SCHEMA',
'TABLE_NAME',
],
null,
$link
);
// here, we check for Mroonga engine and compute the good data_length and index_length
// in the StructureController only we need to sum the two values as the other engines
foreach ($tables as $one_database_name => $one_database_tables) {
foreach ($one_database_tables as $one_table_name => $one_table_data) {
if ($one_table_data['Engine'] !== 'Mroonga') {
continue;
}
if (! StorageEngine::hasMroongaEngine()) {
continue;
}
[
$tables[$one_database_name][$one_table_name]['Data_length'],
$tables[$one_database_name][$one_table_name]['Index_length'],
] = StorageEngine::getMroongaLengths($one_database_name, $one_table_name);
}
}
if ($sort_by === 'Name' && $GLOBALS['cfg']['NaturalOrder']) {
// here, the array's first key is by schema name
foreach ($tables as $one_database_name => $one_database_tables) {
uksort($one_database_tables, 'strnatcasecmp');
if ($sort_order === 'DESC') {
$one_database_tables = array_reverse($one_database_tables);
}
$tables[$one_database_name] = $one_database_tables;
}
} elseif ($sort_by === 'Data_length') {
// Size = Data_length + Index_length
foreach ($tables as $one_database_name => $one_database_tables) {
uasort(
$one_database_tables,
/**
* @param array $a
* @param array $b
*/
static function ($a, $b) {
$aLength = $a['Data_length'] + $a['Index_length'];
$bLength = $b['Data_length'] + $b['Index_length'];
return $aLength <=> $bLength;
}
);
if ($sort_order === 'DESC') {
$one_database_tables = array_reverse($one_database_tables);
}
$tables[$one_database_name] = $one_database_tables;
}
}
}
// If permissions are wrong on even one database directory,
// information_schema does not return any table info for any database
// this is why we fall back to SHOW TABLE STATUS even for MySQL >= 50002
if (empty($tables)) {
if ($table || ($tbl_is_group === true) || $table_type) {
$sql = 'SHOW TABLE STATUS FROM '
. Util::backquote($database)
. ' WHERE';
$needAnd = false;
if ($table || ($tbl_is_group === true)) {
if (is_array($table)) {
$sql .= ' `Name` IN (\''
. implode(
'\', \'',
array_map(
[
$this,
'escapeString',
],
$table,
$link
)
) . '\')';
} else {
$sql .= " `Name` LIKE '"
. Util::escapeMysqlWildcards(
$this->escapeString($table, $link)
)
. "%'";
}
$needAnd = true;
}
if ($table_type) {
if ($needAnd) {
$sql .= ' AND';
}
if ($table_type === 'view') {
$sql .= " `Comment` = 'VIEW'";
} elseif ($table_type === 'table') {
$sql .= " `Comment` != 'VIEW'";
}
}
} else {
$sql = 'SHOW TABLE STATUS FROM '
. Util::backquote($database);
}
$each_tables = $this->fetchResult($sql, 'Name', null, $link);
// here, we check for Mroonga engine and compute the good data_length and index_length
// in the StructureController only we need to sum the two values as the other engines
foreach ($each_tables as $table_name => $table_data) {
if ($table_data['Engine'] !== 'Mroonga') {
continue;
}
if (! StorageEngine::hasMroongaEngine()) {
continue;
}
[
$each_tables[$table_name]['Data_length'],
$each_tables[$table_name]['Index_length'],
] = StorageEngine::getMroongaLengths($database, $table_name);
}
// Sort naturally if the config allows it and we're sorting
// the Name column.
if ($sort_by === 'Name' && $GLOBALS['cfg']['NaturalOrder']) {
uksort($each_tables, 'strnatcasecmp');
if ($sort_order === 'DESC') {
$each_tables = array_reverse($each_tables);
}
} else {
// Prepare to sort by creating array of the selected sort
// value to pass to array_multisort
// Size = Data_length + Index_length
$sortValues = [];
if ($sort_by === 'Data_length') {
foreach ($each_tables as $table_name => $table_data) {
$sortValues[$table_name] = strtolower(
(string) ($table_data['Data_length']
+ $table_data['Index_length'])
);
}
} else {
foreach ($each_tables as $table_name => $table_data) {
$sortValues[$table_name] = strtolower($table_data[$sort_by] ?? '');
}
}
if ($sortValues) {
if ($sort_order === 'DESC') {
array_multisort($sortValues, SORT_DESC, $each_tables);
} else {
array_multisort($sortValues, SORT_ASC, $each_tables);
}
}
// cleanup the temporary sort array
unset($sortValues);
}
if ($limit_count) {
$each_tables = array_slice($each_tables, $limit_offset, $limit_count);
}
$tables[$database] = Compatibility::getISCompatForGetTablesFull($each_tables, $database);
}
// cache table data
// so Table does not require to issue SHOW TABLE STATUS again
$this->cache->cacheTableData($tables, $table);
if (isset($tables[$database])) {
return $tables[$database];
}
if (isset($tables[mb_strtolower($database)])) {
// on windows with lower_case_table_names = 1
// MySQL returns
// with SHOW DATABASES or information_schema.SCHEMATA: `Test`
// but information_schema.TABLES gives `test`
// see https://github.com/phpmyadmin/phpmyadmin/issues/8402
return $tables[mb_strtolower($database)];
}
return $tables;
}
/**
* Get VIEWs in a particular database
*
* @param string $db Database name to look in
*
* @return Table[] Set of VIEWs inside the database
*/
public function getVirtualTables(string $db): array
{
$tables_full = array_keys($this->getTablesFull($db));
$views = [];
foreach ($tables_full as $table) {
$table = $this->getTable($db, (string) $table);
if (! $table->isView()) {
continue;
}
$views[] = $table;
}
return $views;
}
/**
* returns array with databases containing extended infos about them
*
* @param string $database database
* @param bool $force_stats retrieve stats also for MySQL < 5
* @param int $link link type
* @param string $sort_by column to order by
* @param string $sort_order ASC or DESC
* @param int $limit_offset starting offset for LIMIT
* @param bool|int $limit_count row count for LIMIT or true
* for $GLOBALS['cfg']['MaxDbList']
*
* @return array
*
* @todo move into ListDatabase?
*/
public function getDatabasesFull(
?string $database = null,
bool $force_stats = false,
$link = self::CONNECT_USER,
string $sort_by = 'SCHEMA_NAME',
string $sort_order = 'ASC',
int $limit_offset = 0,
$limit_count = false
): array {
$sort_order = strtoupper($sort_order);
if ($limit_count === true) {
$limit_count = $GLOBALS['cfg']['MaxDbList'];
}
$apply_limit_and_order_manual = true;
if (! $GLOBALS['cfg']['Server']['DisableIS']) {
/**
* if $GLOBALS['cfg']['NaturalOrder'] is enabled, we cannot use LIMIT
* cause MySQL does not support natural ordering,
* we have to do it afterward
*/
$limit = '';
if (! $GLOBALS['cfg']['NaturalOrder']) {
if ($limit_count) {
$limit = ' LIMIT ' . $limit_count . ' OFFSET ' . $limit_offset;
}
$apply_limit_and_order_manual = false;
}
// get table information from information_schema
$sqlWhereSchema = '';
if ($database !== null) {
$sqlWhereSchema = 'WHERE `SCHEMA_NAME` LIKE \''
. $this->escapeString($database, $link) . '\'';
}
$sql = QueryGenerator::getInformationSchemaDatabasesFullRequest(
$force_stats,
$sqlWhereSchema,
$sort_by,
$sort_order,
$limit
);
$databases = $this->fetchResult($sql, 'SCHEMA_NAME', null, $link);
$mysql_error = $this->getError($link);
if (! count($databases) && isset($GLOBALS['errno'])) {
Generator::mysqlDie($mysql_error, $sql);
}
// display only databases also in official database list
// f.e. to apply hide_db and only_db
$drops = array_diff(
array_keys($databases),
(array) $GLOBALS['dblist']->databases
);
foreach ($drops as $drop) {
unset($databases[$drop]);
}
} else {
$databases = [];
foreach ($GLOBALS['dblist']->databases as $database_name) {
// Compatibility with INFORMATION_SCHEMA output
$databases[$database_name]['SCHEMA_NAME'] = $database_name;
$databases[$database_name]['DEFAULT_COLLATION_NAME'] = $this->getDbCollation($database_name);
if (! $force_stats) {
continue;
}
// get additional info about tables
$databases[$database_name]['SCHEMA_TABLES'] = 0;
$databases[$database_name]['SCHEMA_TABLE_ROWS'] = 0;
$databases[$database_name]['SCHEMA_DATA_LENGTH'] = 0;
$databases[$database_name]['SCHEMA_MAX_DATA_LENGTH'] = 0;
$databases[$database_name]['SCHEMA_INDEX_LENGTH'] = 0;
$databases[$database_name]['SCHEMA_LENGTH'] = 0;
$databases[$database_name]['SCHEMA_DATA_FREE'] = 0;
$res = $this->query(
'SHOW TABLE STATUS FROM '
. Util::backquote($database_name) . ';'
);
if ($res === false) {
unset($res);
continue;
}
while ($row = $this->fetchAssoc($res)) {
$databases[$database_name]['SCHEMA_TABLES']++;
$databases[$database_name]['SCHEMA_TABLE_ROWS'] += $row['Rows'];
$databases[$database_name]['SCHEMA_DATA_LENGTH'] += $row['Data_length'];
$databases[$database_name]['SCHEMA_MAX_DATA_LENGTH'] += $row['Max_data_length'];
$databases[$database_name]['SCHEMA_INDEX_LENGTH'] += $row['Index_length'];
// for InnoDB, this does not contain the number of
// overhead bytes but the total free space
if ($row['Engine'] !== 'InnoDB') {
$databases[$database_name]['SCHEMA_DATA_FREE'] += $row['Data_free'];
}
$databases[$database_name]['SCHEMA_LENGTH'] += $row['Data_length'] + $row['Index_length'];
}
unset($res);
}
}
/**
* apply limit and order manually now
* (caused by older MySQL < 5 or $GLOBALS['cfg']['NaturalOrder'])
*/
if ($apply_limit_and_order_manual) {
usort(
$databases,
static function ($a, $b) use ($sort_by, $sort_order) {
return Utilities::usortComparisonCallback($a, $b, $sort_by, $sort_order);
}
);
/**
* now apply limit
*/
if ($limit_count) {
$databases = array_slice($databases, $limit_offset, $limit_count);
}
}
return $databases;
}
/**
* returns detailed array with all columns for sql
*
* @param string $sql_query target SQL query to get columns
* @param array $view_columns alias for columns
*
* @return array
* @psalm-return list<array<string, mixed>>
*/
public function getColumnMapFromSql(string $sql_query, array $view_columns = []): array
{
$result = $this->tryQuery($sql_query);
if ($result === false) {
return [];
}
$meta = $this->getFieldsMeta($result);
if ($meta === null) {
return [];
}
$column_map = [];
$nbColumns = count($view_columns);
foreach ($meta as $i => $field) {
$map = [
'table_name' => $field->table,
'refering_column' => $field->name,
];
if ($nbColumns >= $i) {
$map['real_column'] = $view_columns[$i];
}
$column_map[] = $map;
}
return $column_map;
}
/**
* returns detailed array with all columns for given table in database,
* or all tables/databases
*
* @param string $database name of database
* @param string $table name of table to retrieve columns from
* @param string $column name of specific column
* @param mixed $link mysql link resource
*
* @return array
*/
public function getColumnsFull(
?string $database = null,
?string $table = null,
?string $column = null,
$link = self::CONNECT_USER
): array {
if (! $GLOBALS['cfg']['Server']['DisableIS']) {
[$sql, $arrayKeys] = QueryGenerator::getInformationSchemaColumnsFullRequest(
$database !== null ? $this->escapeString($database, $link) : null,
$table !== null ? $this->escapeString($table, $link) : null,
$column !== null ? $this->escapeString($column, $link) : null
);
return $this->fetchResult($sql, $arrayKeys, null, $link);
}
$columns = [];
if ($database === null) {
foreach ($GLOBALS['dblist']->databases as $database) {
$columns[$database] = $this->getColumnsFull($database, null, null, $link);
}
return $columns;
}
if ($table === null) {
$tables = $this->getTables($database);
foreach ($tables as $table) {
$columns[$table] = $this->getColumnsFull($database, $table, null, $link);
}
return $columns;
}
$sql = 'SHOW FULL COLUMNS FROM '
. Util::backquote($database) . '.' . Util::backquote($table);
if ($column !== null) {
$sql .= " LIKE '" . $this->escapeString($column, $link) . "'";
}
$columns = $this->fetchResult($sql, 'Field', null, $link);
$columns = Compatibility::getISCompatForGetColumnsFull($columns, $database, $table);
if ($column !== null) {
return reset($columns);
}
return $columns;
}
/**
* Returns description of a $column in given table
*
* @param string $database name of database
* @param string $table name of table to retrieve columns from
* @param string $column name of column
* @param bool $full whether to return full info or only column names
* @param int $link link type
*
* @return array flat array description
*/
public function getColumn(
string $database,
string $table,
string $column,
bool $full = false,
$link = self::CONNECT_USER
): array {
$sql = QueryGenerator::getColumnsSql(
$database,
$table,
Util::escapeMysqlWildcards($this->escapeString($column)),
$full
);
/** @var array<string, array> $fields */
$fields = $this->fetchResult($sql, 'Field', null, $link);
$columns = $this->attachIndexInfoToColumns($database, $table, $fields);
return array_shift($columns) ?? [];
}
/**
* Returns descriptions of columns in given table
*
* @param string $database name of database
* @param string $table name of table to retrieve columns from
* @param bool $full whether to return full info or only column names
* @param int $link link type
*
* @return array<string, array> array indexed by column names
*/
public function getColumns(
string $database,
string $table,
bool $full = false,
$link = self::CONNECT_USER
): array {
$sql = QueryGenerator::getColumnsSql(
$database,
$table,
null,
$full
);
/** @var array<string, array> $fields */
$fields = $this->fetchResult($sql, 'Field', null, $link);
return $this->attachIndexInfoToColumns($database, $table, $fields);
}
/**
* Attach index information to the column definition
*
* @param string $database name of database
* @param string $table name of table to retrieve columns from
* @param array<string, array> $fields column array indexed by their names
*
* @return array<string, array> Column defintions with index information
*/
private function attachIndexInfoToColumns(
string $database,
string $table,
array $fields
): array {
if (! $fields) {
return [];
}
// Check if column is a part of multiple-column index and set its 'Key'.
$indexes = Index::getFromTable($table, $database);
foreach ($fields as $field => $field_data) {
if (! empty($field_data['Key'])) {
continue;
}
foreach ($indexes as $index) {
if (! $index->hasColumn($field)) {
continue;
}
$index_columns = $index->getColumns();
if ($index_columns[$field]->getSeqInIndex() <= 1) {
continue;
}
if ($index->isUnique()) {
$fields[$field]['Key'] = 'UNI';
} else {
$fields[$field]['Key'] = 'MUL';
}
}
}
return $fields;
}
/**
* Returns all column names in given table
*
* @param string $database name of database
* @param string $table name of table to retrieve columns from
* @param mixed $link mysql link resource
*
* @return string[]
*/
public function getColumnNames(
string $database,
string $table,
$link = self::CONNECT_USER
): array {
$sql = QueryGenerator::getColumnsSql($database, $table);
// We only need the 'Field' column which contains the table's column names
return $this->fetchResult($sql, null, 'Field', $link);
}
/**
* Returns indexes of a table
*
* @param string $database name of database
* @param string $table name of the table whose indexes are to be retrieved
* @param mixed $link mysql link resource
*
* @return array
*/
public function getTableIndexes(
string $database,
string $table,
$link = self::CONNECT_USER
): array {
$sql = QueryGenerator::getTableIndexesSql($database, $table);
return $this->fetchResult($sql, null, null, $link);
}
/**
* returns value of given mysql server variable
*
* @param string $var mysql server variable name
* @param int $type DatabaseInterface::GETVAR_SESSION |
* DatabaseInterface::GETVAR_GLOBAL
* @param mixed $link mysql link resource|object
*
* @return mixed value for mysql server variable
*/
public function getVariable(
string $var,
int $type = self::GETVAR_SESSION,
$link = self::CONNECT_USER
) {
switch ($type) {
case self::GETVAR_SESSION:
$modifier = ' SESSION';
break;
case self::GETVAR_GLOBAL:
$modifier = ' GLOBAL';
break;
default:
$modifier = '';
}
return $this->fetchValue('SHOW' . $modifier . ' VARIABLES LIKE \'' . $var . '\';', 0, 1, $link);
}
/**
* Sets new value for a variable if it is different from the current value
*
* @param string $var variable name
* @param string $value value to set
* @param mixed $link mysql link resource|object
*/
public function setVariable(
string $var,
string $value,
$link = self::CONNECT_USER
): bool {
$current_value = $this->getVariable($var, self::GETVAR_SESSION, $link);
if ($current_value == $value) {
return true;
}
return (bool) $this->query('SET ' . $var . ' = ' . $value . ';', $link);
}
/**
* Function called just after a connection to the MySQL database server has
* been established. It sets the connection collation, and determines the
* version of MySQL which is running.
*/
public function postConnect(): void
{
$version = $this->fetchSingleRow(
'SELECT @@version, @@version_comment',
DbalInterface::FETCH_ASSOC,
self::CONNECT_USER
);
if (is_array($version)) {
$this->versionString = $version['@@version'] ?? '';
$this->versionInt = Utilities::versionToInt($this->versionString);
$this->versionComment = $version['@@version_comment'] ?? '';
if (stripos($this->versionString, 'mariadb') !== false) {
$this->isMariaDb = true;
}
if (stripos($this->versionComment, 'percona') !== false) {
$this->isPercona = true;
}
}
if ($this->versionInt > 50503) {
$default_charset = 'utf8mb4';
$default_collation = 'utf8mb4_general_ci';
} else {
$default_charset = 'utf8';
$default_collation = 'utf8_general_ci';
}
$GLOBALS['collation_connection'] = $default_collation;
$GLOBALS['charset_connection'] = $default_charset;
$this->query(
sprintf('SET NAMES \'%s\' COLLATE \'%s\';', $default_charset, $default_collation),
self::CONNECT_USER,
self::QUERY_STORE
);
/* Locale for messages */
$locale = LanguageManager::getInstance()->getCurrentLanguage()->getMySQLLocale();
if ($locale) {
$this->query("SET lc_messages = '" . $locale . "';", self::CONNECT_USER, self::QUERY_STORE);
}
// Set timezone for the session, if required.
if ($GLOBALS['cfg']['Server']['SessionTimeZone'] != '') {
$sql_query_tz = 'SET ' . Util::backquote('time_zone') . ' = '
. '\''
. $this->escapeString($GLOBALS['cfg']['Server']['SessionTimeZone'])
. '\'';
if (! $this->tryQuery($sql_query_tz)) {
$error_message_tz = sprintf(
__(
'Unable to use timezone "%1$s" for server %2$d. '
. 'Please check your configuration setting for '
. '[em]$cfg[\'Servers\'][%3$d][\'SessionTimeZone\'][/em]. '
. 'phpMyAdmin is currently using the default time zone '
. 'of the database server.'
),
$GLOBALS['cfg']['Server']['SessionTimeZone'],
$GLOBALS['server'],
$GLOBALS['server']
);
trigger_error($error_message_tz, E_USER_WARNING);
}
}
/* Loads closest context to this version. */
Context::loadClosest(($this->isMariaDb ? 'MariaDb' : 'MySql') . $this->versionInt);
/**
* the DatabaseList class as a stub for the ListDatabase class
*/
$GLOBALS['dblist'] = new DatabaseList();
}
/**
* Sets collation connection for user link
*
* @param string $collation collation to set
*/
public function setCollation(string $collation): void
{
$charset = $GLOBALS['charset_connection'];
/* Automatically adjust collation if not supported by server */
if ($charset === 'utf8' && str_starts_with($collation, 'utf8mb4_')) {
$collation = 'utf8_' . substr($collation, 8);
}
$result = $this->tryQuery(
"SET collation_connection = '"
. $this->escapeString($collation, self::CONNECT_USER)
. "';",
self::CONNECT_USER,
self::QUERY_STORE
);
if ($result === false) {
trigger_error(
__('Failed to set configured collation connection!'),
E_USER_WARNING
);
return;
}
$GLOBALS['collation_connection'] = $collation;
}
/**
* This function checks and initializes the phpMyAdmin configuration
* storage state before it is used into session cache.
*/
public function initRelationParamsCache(): void
{
if (strlen($GLOBALS['db'])) {
$relationParameters = $this->relation->getRelationParameters();
if (empty($relationParameters->db)) {
$this->relation->fixPmaTables($GLOBALS['db'], false);
}
}
$storageDbName = $GLOBALS['cfg']['Server']['pmadb'] ?? '';
// Use "phpmyadmin" as a default database name to check to keep the behavior consistent
$this->relation->fixPmaTables($storageDbName ?: 'phpmyadmin', false);
}
/**
* Function called just after a connection to the MySQL database server has
* been established. It sets the connection collation, and determines the
* version of MySQL which is running.
*/
public function postConnectControl(): void
{
// If Zero configuration mode enabled, check PMA tables in current db.
if ($GLOBALS['cfg']['ZeroConf'] != true) {
return;
}
/**
* the DatabaseList class as a stub for the ListDatabase class
*/
$GLOBALS['dblist'] = new DatabaseList();
$this->initRelationParamsCache();
}
/**
* returns a single value from the given result or query,
* if the query or the result has more than one row or field
* the first field of the first row is returned
*
* <code>
* $sql = 'SELECT `name` FROM `user` WHERE `id` = 123';
* $user_name = $dbi->fetchValue($sql);
* // produces
* // $user_name = 'John Doe'
* </code>
*
* @param string $query The query to execute
* @param int $row_number row to fetch the value from,
* starting at 0, with 0 being default
* @param int|string $field field to fetch the value from,
* starting at 0, with 0 being default
* @param int $link link type
*
* @return mixed|false value of first field in first row from result or false if not found
*/
public function fetchValue(
string $query,
int $row_number = 0,
$field = 0,
$link = self::CONNECT_USER
) {
$result = $this->tryQuery($query, $link, self::QUERY_STORE, false);
if ($result === false) {
return false;
}
// return false if result is empty or false
// or requested row is larger than rows in result
if ($this->numRows($result) < $row_number + 1) {
return false;
}
// get requested row
$this->dataSeek($result, $row_number);
$row = $this->fetchByMode($result, is_int($field) ? self::FETCH_NUM : self::FETCH_ASSOC);
// return requested field
return $row[$field] ?? false;
}
/**
* Returns only the first row from the result or null if result is empty.
*
* <code>
* $sql = 'SELECT * FROM `user` WHERE `id` = 123';
* $user = $dbi->fetchSingleRow($sql);
* // produces
* // $user = array('id' => 123, 'name' => 'John Doe')
* </code>
*
* @param string $query The query to execute
* @param string $type NUM|ASSOC|BOTH returned array should either numeric
* associative or both
* @param int $link link type
* @psalm-param DatabaseInterface::FETCH_NUM|DatabaseInterface::FETCH_ASSOC|DatabaseInterface::FETCH_BOTH $type
*/
public function fetchSingleRow(
string $query,
string $type = DbalInterface::FETCH_ASSOC,
$link = self::CONNECT_USER
): ?array {
$result = $this->tryQuery($query, $link, self::QUERY_STORE, false);
if ($result === false) {
return null;
}
return $this->fetchByMode($result, $type);
}
/**
* Returns row or element of a row
*
* @param array|string $row Row to process
* @param string|int|null $value Which column to return
*
* @return mixed
*/
private function fetchValueOrValueByIndex($row, $value)
{
return $value === null ? $row : $row[$value];
}
/**
* returns array of rows with numeric or associative keys
*
* @param object $result result set identifier
* @param string $mode either self::FETCH_NUM, self::FETCH_ASSOC or self::FETCH_BOTH
* @psalm-param self::FETCH_NUM|self::FETCH_ASSOC|self::FETCH_BOTH $mode
*/
private function fetchByMode($result, string $mode): ?array
{
if ($mode === self::FETCH_NUM) {
return $this->extension->fetchRow($result);
}
if ($mode === self::FETCH_ASSOC) {
return $this->extension->fetchAssoc($result);
}
return $this->extension->fetchArray($result);
}
/**
* returns all rows in the resultset in one array
*
* <code>
* $sql = 'SELECT * FROM `user`';
* $users = $dbi->fetchResult($sql);
* // produces
* // $users[] = array('id' => 123, 'name' => 'John Doe')
*
* $sql = 'SELECT `id`, `name` FROM `user`';
* $users = $dbi->fetchResult($sql, 'id');
* // produces
* // $users['123'] = array('id' => 123, 'name' => 'John Doe')
*
* $sql = 'SELECT `id`, `name` FROM `user`';
* $users = $dbi->fetchResult($sql, 0);
* // produces
* // $users['123'] = array(0 => 123, 1 => 'John Doe')
*
* $sql = 'SELECT `id`, `name` FROM `user`';
* $users = $dbi->fetchResult($sql, 'id', 'name');
* // or
* $users = $dbi->fetchResult($sql, 0, 1);
* // produces
* // $users['123'] = 'John Doe'
*
* $sql = 'SELECT `name` FROM `user`';
* $users = $dbi->fetchResult($sql);
* // produces
* // $users[] = 'John Doe'
*
* $sql = 'SELECT `group`, `name` FROM `user`'
* $users = $dbi->fetchResult($sql, array('group', null), 'name');
* // produces
* // $users['admin'][] = 'John Doe'
*
* $sql = 'SELECT `group`, `name` FROM `user`'
* $users = $dbi->fetchResult($sql, array('group', 'name'), 'id');
* // produces
* // $users['admin']['John Doe'] = '123'
* </code>
*
* @param string $query query to execute
* @param string|int|array|null $key field-name or offset
* used as key for array
* or array of those
* @param string|int|null $value value-name or offset
* used as value for array
* @param int $link link type
* @param int $options query options
*
* @return array resultrows or values indexed by $key
*/
public function fetchResult(
string $query,
$key = null,
$value = null,
$link = self::CONNECT_USER,
int $options = 0
): array {
$resultrows = [];
$result = $this->tryQuery($query, $link, $options, false);
// return empty array if result is empty or false
if ($result === false) {
return $resultrows;
}
$fetch_function = self::FETCH_ASSOC;
if ($key === null) {
// no nested array if only one field is in result
if ($this->numFields($result) === 1) {
$value = 0;
$fetch_function = self::FETCH_NUM;
}
while ($row = $this->fetchByMode($result, $fetch_function)) {
$resultrows[] = $this->fetchValueOrValueByIndex($row, $value);
}
} elseif (is_array($key)) {
while ($row = $this->fetchByMode($result, $fetch_function)) {
$result_target =& $resultrows;
foreach ($key as $key_index) {
if ($key_index === null) {
$result_target =& $result_target[];
continue;
}
if (! isset($result_target[$row[$key_index]])) {
$result_target[$row[$key_index]] = [];
}
$result_target =& $result_target[$row[$key_index]];
}
$result_target = $this->fetchValueOrValueByIndex($row, $value);
}
} else {
// if $key is an integer use non associative mysql fetch function
if (is_int($key)) {
$fetch_function = self::FETCH_NUM;
}
while ($row = $this->fetchByMode($result, $fetch_function)) {
$resultrows[$row[$key]] = $this->fetchValueOrValueByIndex($row, $value);
}
}
return $resultrows;
}
/**
* Get supported SQL compatibility modes
*
* @return array supported SQL compatibility modes
*/
public function getCompatibilities(): array
{
return [
'NONE',
'ANSI',
'DB2',
'MAXDB',
'MYSQL323',
'MYSQL40',
'MSSQL',
'ORACLE',
// removed; in MySQL 5.0.33, this produces exports that
// can't be read by POSTGRESQL (see our bug #1596328)
// 'POSTGRESQL',
'TRADITIONAL',
];
}
/**
* returns warnings for last query
*
* @param int $link link type
*
* @return Warning[] warnings
*/
public function getWarnings($link = self::CONNECT_USER): array
{
/** @var object|false $result */
$result = $this->tryQuery('SHOW WARNINGS', $link, 0, false);
if ($result === false) {
return [];
}
$warnings = [];
while ($row = $this->fetchAssoc($result)) {
$warnings[] = Warning::fromArray($row);
}
return $warnings;
}
/**
* returns an array of PROCEDURE or FUNCTION names for a db
*
* @param string $db db name
* @param string $which PROCEDURE | FUNCTION
* @param int $link link type
*
* @return array the procedure names or function names
*/
public function getProceduresOrFunctions(
string $db,
string $which,
$link = self::CONNECT_USER
): array {
$shows = $this->fetchResult('SHOW ' . $which . ' STATUS;', null, null, $link);
$result = [];
foreach ($shows as $one_show) {
if ($one_show['Db'] != $db || $one_show['Type'] != $which) {
continue;
}
$result[] = $one_show['Name'];
}
return $result;
}
/**
* returns the definition of a specific PROCEDURE, FUNCTION, EVENT or VIEW
*
* @param string $db db name
* @param string $which PROCEDURE | FUNCTION | EVENT | VIEW
* @param string $name the procedure|function|event|view name
* @param int $link link type
*
* @return string|null the definition
*/
public function getDefinition(
string $db,
string $which,
string $name,
$link = self::CONNECT_USER
): ?string {
$returned_field = [
'PROCEDURE' => 'Create Procedure',
'FUNCTION' => 'Create Function',
'EVENT' => 'Create Event',
'VIEW' => 'Create View',
];
$query = 'SHOW CREATE ' . $which . ' '
. Util::backquote($db) . '.'
. Util::backquote($name);
$result = $this->fetchValue($query, 0, $returned_field[$which], $link);
return is_string($result) ? $result : null;
}
/**
* returns details about the PROCEDUREs or FUNCTIONs for a specific database
* or details about a specific routine
*
* @param string $db db name
* @param string $which PROCEDURE | FUNCTION or null for both
* @param string $name name of the routine (to fetch a specific routine)
*
* @return array information about PROCEDUREs or FUNCTIONs
*/
public function getRoutines(
string $db,
?string $which = null,
string $name = ''
): array {
if (! $GLOBALS['cfg']['Server']['DisableIS']) {
$query = QueryGenerator::getInformationSchemaRoutinesRequest(
$this->escapeString($db),
isset($which) && in_array($which, ['FUNCTION', 'PROCEDURE']) ? $which : null,
empty($name) ? null : $this->escapeString($name)
);
$routines = $this->fetchResult($query);
} else {
$routines = [];
if ($which === 'FUNCTION' || $which == null) {
$query = 'SHOW FUNCTION STATUS'
. " WHERE `Db` = '" . $this->escapeString($db) . "'";
if ($name) {
$query .= " AND `Name` = '"
. $this->escapeString($name) . "'";
}
$routines = $this->fetchResult($query);
}
if ($which === 'PROCEDURE' || $which == null) {
$query = 'SHOW PROCEDURE STATUS'
. " WHERE `Db` = '" . $this->escapeString($db) . "'";
if ($name) {
$query .= " AND `Name` = '"
. $this->escapeString($name) . "'";
}
$routines = array_merge($routines, $this->fetchResult($query));
}
}
$ret = [];
foreach ($routines as $routine) {
$ret[] = [
'db' => $routine['Db'],
'name' => $routine['Name'],
'type' => $routine['Type'],
'definer' => $routine['Definer'],
'returns' => $routine['DTD_IDENTIFIER'] ?? '',
];
}
// Sort results by name
$name = array_column($ret, 'name');
array_multisort($name, SORT_ASC, $ret);
return $ret;
}
/**
* returns details about the EVENTs for a specific database
*
* @param string $db db name
* @param string $name event name
*
* @return array information about EVENTs
*/
public function getEvents(string $db, string $name = ''): array
{
if (! $GLOBALS['cfg']['Server']['DisableIS']) {
$query = QueryGenerator::getInformationSchemaEventsRequest(
$this->escapeString($db),
empty($name) ? null : $this->escapeString($name)
);
} else {
$query = 'SHOW EVENTS FROM ' . Util::backquote($db);
if ($name) {
$query .= " WHERE `Name` = '"
. $this->escapeString($name) . "'";
}
}
$result = [];
$events = $this->fetchResult($query);
foreach ($events as $event) {
$result[] = [
'name' => $event['Name'],
'type' => $event['Type'],
'status' => $event['Status'],
];
}
// Sort results by name
$name = array_column($result, 'name');
array_multisort($name, SORT_ASC, $result);
return $result;
}
/**
* returns details about the TRIGGERs for a specific table or database
*
* @param string $db db name
* @param string $table table name
* @param string $delimiter the delimiter to use (may be empty)
*
* @return array information about triggers (may be empty)
*/
public function getTriggers(string $db, string $table = '', $delimiter = '//')
{
$result = [];
if (! $GLOBALS['cfg']['Server']['DisableIS']) {
$query = QueryGenerator::getInformationSchemaTriggersRequest(
$this->escapeString($db),
empty($table) ? null : $this->escapeString($table)
);
} else {
$query = 'SHOW TRIGGERS FROM ' . Util::backquote($db);
if ($table) {
$query .= " LIKE '" . $this->escapeString($table) . "';";
}
}
$triggers = $this->fetchResult($query);
foreach ($triggers as $trigger) {
if ($GLOBALS['cfg']['Server']['DisableIS']) {
$trigger['TRIGGER_NAME'] = $trigger['Trigger'];
$trigger['ACTION_TIMING'] = $trigger['Timing'];
$trigger['EVENT_MANIPULATION'] = $trigger['Event'];
$trigger['EVENT_OBJECT_TABLE'] = $trigger['Table'];
$trigger['ACTION_STATEMENT'] = $trigger['Statement'];
$trigger['DEFINER'] = $trigger['Definer'];
}
$one_result = [];
$one_result['name'] = $trigger['TRIGGER_NAME'];
$one_result['table'] = $trigger['EVENT_OBJECT_TABLE'];
$one_result['action_timing'] = $trigger['ACTION_TIMING'];
$one_result['event_manipulation'] = $trigger['EVENT_MANIPULATION'];
$one_result['definition'] = $trigger['ACTION_STATEMENT'];
$one_result['definer'] = $trigger['DEFINER'];
// do not prepend the schema name; this way, importing the
// definition into another schema will work
$one_result['full_trigger_name'] = Util::backquote($trigger['TRIGGER_NAME']);
$one_result['drop'] = 'DROP TRIGGER IF EXISTS '
. $one_result['full_trigger_name'];
$one_result['create'] = 'CREATE TRIGGER '
. $one_result['full_trigger_name'] . ' '
. $trigger['ACTION_TIMING'] . ' '
. $trigger['EVENT_MANIPULATION']
. ' ON ' . Util::backquote($trigger['EVENT_OBJECT_TABLE'])
. "\n" . ' FOR EACH ROW '
. $trigger['ACTION_STATEMENT'] . "\n" . $delimiter . "\n";
$result[] = $one_result;
}
// Sort results by name
$name = array_column($result, 'name');
array_multisort($name, SORT_ASC, $result);
return $result;
}
/**
* gets the current user with host
*
* @return string the current user i.e. user@host
*/
public function getCurrentUser(): string
{
if (SessionCache::has('mysql_cur_user')) {
return SessionCache::get('mysql_cur_user');
}
$user = $this->fetchValue('SELECT CURRENT_USER();');
if ($user !== false) {
SessionCache::set('mysql_cur_user', $user);
return $user;
}
return '@';
}
public function isSuperUser(): bool
{
if (SessionCache::has('is_superuser')) {
return (bool) SessionCache::get('is_superuser');
}
if (! $this->isConnected()) {
return false;
}
$result = $this->tryQuery('SELECT 1 FROM mysql.user LIMIT 1', self::CONNECT_USER, self::QUERY_STORE);
$isSuperUser = false;
if ($result) {
$isSuperUser = (bool) $this->numRows($result);
}
SessionCache::set('is_superuser', $isSuperUser);
return $isSuperUser;
}
public function isGrantUser(): bool
{
global $cfg;
if (SessionCache::has('is_grantuser')) {
return (bool) SessionCache::get('is_grantuser');
}
if (! $this->isConnected()) {
return false;
}
$hasGrantPrivilege = false;
if ($cfg['Server']['DisableIS']) {
$grants = $this->getCurrentUserGrants();
foreach ($grants as $grant) {
if (str_contains($grant, 'WITH GRANT OPTION')) {
$hasGrantPrivilege = true;
break;
}
}
SessionCache::set('is_grantuser', $hasGrantPrivilege);
return $hasGrantPrivilege;
}
[$user, $host] = $this->getCurrentUserAndHost();
$query = QueryGenerator::getInformationSchemaDataForGranteeRequest($user, $host);
$result = $this->tryQuery($query, self::CONNECT_USER, self::QUERY_STORE);
if ($result) {
$hasGrantPrivilege = (bool) $this->numRows($result);
}
SessionCache::set('is_grantuser', $hasGrantPrivilege);
return $hasGrantPrivilege;
}
public function isCreateUser(): bool
{
global $cfg;
if (SessionCache::has('is_createuser')) {
return (bool) SessionCache::get('is_createuser');
}
if (! $this->isConnected()) {
return false;
}
$hasCreatePrivilege = false;
if ($cfg['Server']['DisableIS']) {
$grants = $this->getCurrentUserGrants();
foreach ($grants as $grant) {
if (str_contains($grant, 'ALL PRIVILEGES ON *.*') || str_contains($grant, 'CREATE USER')) {
$hasCreatePrivilege = true;
break;
}
}
SessionCache::set('is_createuser', $hasCreatePrivilege);
return $hasCreatePrivilege;
}
[$user, $host] = $this->getCurrentUserAndHost();
$query = QueryGenerator::getInformationSchemaDataForCreateRequest($user, $host);
$result = $this->tryQuery($query, self::CONNECT_USER, self::QUERY_STORE);
if ($result) {
$hasCreatePrivilege = (bool) $this->numRows($result);
}
SessionCache::set('is_createuser', $hasCreatePrivilege);
return $hasCreatePrivilege;
}
public function isConnected(): bool
{
return isset($this->links[self::CONNECT_USER]);
}
private function getCurrentUserGrants(): array
{
return $this->fetchResult('SHOW GRANTS FOR CURRENT_USER();', null, null, self::CONNECT_USER, self::QUERY_STORE);
}
/**
* Get the current user and host
*
* @return array array of username and hostname
*/
public function getCurrentUserAndHost(): array
{
if (count($this->currentUser) === 0) {
$user = $this->getCurrentUser();
$this->currentUser = explode('@', $user);
}
return $this->currentUser;
}
/**
* Returns value for lower_case_table_names variable
*
* @return string|bool
*/
public function getLowerCaseNames()
{
if ($this->lowerCaseTableNames === null) {
$this->lowerCaseTableNames = $this->fetchValue('SELECT @@lower_case_table_names');
}
return $this->lowerCaseTableNames;
}
/**
* connects to the database server
*
* @param int $mode Connection mode on of CONNECT_USER, CONNECT_CONTROL
* or CONNECT_AUXILIARY.
* @param array|null $server Server information like host/port/socket/persistent
* @param int $target How to store connection link, defaults to $mode
*
* @return mixed false on error or a connection object on success
*/
public function connect(int $mode, ?array $server = null, ?int $target = null)
{
[$user, $password, $server] = Config::getConnectionParams($mode, $server);
if ($target === null) {
$target = $mode;
}
if ($user === null || $password === null) {
trigger_error(
__('Missing connection parameters!'),
E_USER_WARNING
);
return false;
}
// Do not show location and backtrace for connection errors
$GLOBALS['errorHandler']->setHideLocation(true);
$result = $this->extension->connect($user, $password, $server);
$GLOBALS['errorHandler']->setHideLocation(false);
if ($result) {
$this->links[$target] = $result;
/* Run post connect for user connections */
if ($target == self::CONNECT_USER) {
$this->postConnect();
}
return $result;
}
if ($mode == self::CONNECT_CONTROL) {
trigger_error(
__(
'Connection for controluser as defined in your configuration failed.'
),
E_USER_WARNING
);
return false;
}
if ($mode == self::CONNECT_AUXILIARY) {
// Do not go back to main login if connection failed
// (currently used only in unit testing)
return false;
}
return $result;
}
/**
* selects given database
*
* @param string|DatabaseName $dbname database name to select
* @param int $link link type
*/
public function selectDb($dbname, $link = self::CONNECT_USER): bool
{
if (! isset($this->links[$link])) {
return false;
}
return $this->extension->selectDb($dbname, $this->links[$link]);
}
/**
* returns array of rows with associative and numeric keys from $result
*
* @param object $result result set identifier
*/
public function fetchArray($result): ?array
{
return $this->extension->fetchArray($result);
}
/**
* returns array of rows with associative keys from $result
*
* @param object $result result set identifier
*/
public function fetchAssoc($result): ?array
{
return $this->extension->fetchAssoc($result);
}
/**
* returns array of rows with numeric keys from $result
*
* @param object $result result set identifier
*/
public function fetchRow($result): ?array
{
return $this->extension->fetchRow($result);
}
/**
* Adjusts the result pointer to an arbitrary row in the result
*
* @param object $result database result
* @param int $offset offset to seek
*/
public function dataSeek($result, int $offset): bool
{
return $this->extension->dataSeek($result, $offset);
}
/**
* Frees memory associated with the result
*
* @param object $result database result
*/
public function freeResult($result): void
{
$this->extension->freeResult($result);
}
/**
* Check if there are any more query results from a multi query
*
* @param int $link link type
*/
public function moreResults($link = self::CONNECT_USER): bool
{
if (! isset($this->links[$link])) {
return false;
}
return $this->extension->moreResults($this->links[$link]);
}
/**
* Prepare next result from multi_query
*
* @param int $link link type
*/
public function nextResult($link = self::CONNECT_USER): bool
{
if (! isset($this->links[$link])) {
return false;
}
return $this->extension->nextResult($this->links[$link]);
}
/**
* Store the result returned from multi query
*
* @param int $link link type
*
* @return mixed false when empty results / result set when not empty
*/
public function storeResult($link = self::CONNECT_USER)
{
if (! isset($this->links[$link])) {
return false;
}
return $this->extension->storeResult($this->links[$link]);
}
/**
* Returns a string representing the type of connection used
*
* @param int $link link type
*
* @return string|bool type of connection used
*/
public function getHostInfo($link = self::CONNECT_USER)
{
if (! isset($this->links[$link])) {
return false;
}
return $this->extension->getHostInfo($this->links[$link]);
}
/**
* Returns the version of the MySQL protocol used
*
* @param int $link link type
*
* @return int|bool version of the MySQL protocol used
*/
public function getProtoInfo($link = self::CONNECT_USER)
{
if (! isset($this->links[$link])) {
return false;
}
return $this->extension->getProtoInfo($this->links[$link]);
}
/**
* returns a string that represents the client library version
*
* @return string MySQL client library version
*/
public function getClientInfo(): string
{
return $this->extension->getClientInfo();
}
/**
* returns last error message or false if no errors occurred
*
* @param int $link link type
*
* @return string|bool error or false
*/
public function getError($link = self::CONNECT_USER)
{
if (! isset($this->links[$link])) {
return false;
}
return $this->extension->getError($this->links[$link]);
}
/**
* returns the number of rows returned by last query
*
* @param object|bool $result result set identifier
*
* @return string|int
* @psalm-return int|numeric-string
*/
public function numRows($result)
{
return $this->extension->numRows($result);
}
/**
* returns last inserted auto_increment id for given $link
* or $GLOBALS['userlink']
*
* @param int $link link type
*
* @return int|false
*/
public function insertId($link = self::CONNECT_USER)
{
// If the primary key is BIGINT we get an incorrect result
// (sometimes negative, sometimes positive)
// and in the present function we don't know if the PK is BIGINT
// so better play safe and use LAST_INSERT_ID()
//
// When no controluser is defined, using mysqli_insert_id($link)
// does not always return the last insert id due to a mixup with
// the tracking mechanism, but this works:
return $this->fetchValue('SELECT LAST_INSERT_ID();', 0, 0, $link);
}
/**
* returns the number of rows affected by last query
*
* @param int $link link type
* @param bool $get_from_cache whether to retrieve from cache
*
* @return int|string
* @psalm-return int|numeric-string
*/
public function affectedRows(
$link = self::CONNECT_USER,
bool $get_from_cache = true
) {
if (! isset($this->links[$link])) {
return -1;
}
if ($get_from_cache) {
return $GLOBALS['cached_affected_rows'];
}
return $this->extension->affectedRows($this->links[$link]);
}
/**
* returns metainfo for fields in $result
*
* @param object $result result set identifier
*
* @return FieldMetadata[]|null meta info for fields in $result
*/
public function getFieldsMeta($result): ?array
{
$result = $this->extension->getFieldsMeta($result);
if ($result !== null && $this->getLowerCaseNames() === '2') {
/**
* Fixup orgtable for lower_case_table_names = 2
*
* In this setup MySQL server reports table name lower case
* but we still need to operate on original case to properly
* match existing strings
*/
foreach ($result as $value) {
if (
strlen($value->orgtable) === 0 ||
mb_strtolower($value->orgtable) !== mb_strtolower($value->table)
) {
continue;
}
$value->orgtable = $value->table;
}
}
return $result;
}
/**
* return number of fields in given $result
*
* @param object $result result set identifier
*
* @return int field count
*/
public function numFields($result): int
{
return $this->extension->numFields($result);
}
/**
* returns the length of the given field $i in $result
*
* @param object $result result set identifier
* @param int $i field
*
* @return int|bool length of field
*/
public function fieldLen($result, int $i)
{
return $this->extension->fieldLen($result, $i);
}
/**
* returns name of $i. field in $result
*
* @param object $result result set identifier
* @param int $i field
*
* @return string name of $i. field in $result
*/
public function fieldName($result, int $i): string
{
return $this->extension->fieldName($result, $i);
}
/**
* returns properly escaped string for use in MySQL queries
*
* @param string $str string to be escaped
* @param mixed $link optional database link to use
*
* @return string a MySQL escaped string
*/
public function escapeString(string $str, $link = self::CONNECT_USER)
{
if ($this->extension === null || ! isset($this->links[$link])) {
return $str;
}
return $this->extension->escapeString($this->links[$link], $str);
}
/**
* Checks if this database server is running on Amazon RDS.
*/
public function isAmazonRds(): bool
{
if (SessionCache::has('is_amazon_rds')) {
return (bool) SessionCache::get('is_amazon_rds');
}
$sql = 'SELECT @@basedir';
$result = (string) $this->fetchValue($sql);
$rds = str_starts_with($result, '/rdsdbbin/');
SessionCache::set('is_amazon_rds', $rds);
return $rds;
}
/**
* Gets SQL for killing a process.
*
* @param int $process Process ID
*/
public function getKillQuery(int $process): string
{
if ($this->isAmazonRds()) {
return 'CALL mysql.rds_kill(' . $process . ');';
}
return 'KILL ' . $process . ';';
}
/**
* Get the phpmyadmin database manager
*/
public function getSystemDatabase(): SystemDatabase
{
return new SystemDatabase($this);
}
/**
* Get a table with database name and table name
*
* @param string $db_name DB name
* @param string $table_name Table name
*/
public function getTable(string $db_name, string $table_name): Table
{
return new Table($table_name, $db_name, $this);
}
/**
* returns collation of given db
*
* @param string $db name of db
*
* @return string collation of $db
*/
public function getDbCollation(string $db): string
{
if (Utilities::isSystemSchema($db)) {
// We don't have to check the collation of the virtual
// information_schema database: We know it!
return 'utf8_general_ci';
}
if (! $GLOBALS['cfg']['Server']['DisableIS']) {
// this is slow with thousands of databases
$sql = 'SELECT DEFAULT_COLLATION_NAME FROM information_schema.SCHEMATA'
. ' WHERE SCHEMA_NAME = \'' . $this->escapeString($db)
. '\' LIMIT 1';
return (string) $this->fetchValue($sql);
}
$this->selectDb($db);
$return = (string) $this->fetchValue('SELECT @@collation_database');
if ($db !== $GLOBALS['db']) {
$this->selectDb($GLOBALS['db']);
}
return $return;
}
/**
* returns default server collation from show variables
*/
public function getServerCollation(): string
{
return (string) $this->fetchValue('SELECT @@collation_server');
}
/**
* Server version as number
*
* @example 80011
*/
public function getVersion(): int
{
return $this->versionInt;
}
/**
* Server version
*/
public function getVersionString(): string
{
return $this->versionString;
}
/**
* Server version comment
*/
public function getVersionComment(): string
{
return $this->versionComment;
}
/**
* Whether connection is MariaDB
*/
public function isMariaDB(): bool
{
return $this->isMariaDb;
}
/**
* Whether connection is PerconaDB
*/
public function isPercona(): bool
{
return $this->isPercona;
}
/**
* Load correct database driver
*
* @param DbiExtension|null $extension Force the use of an alternative extension
*/
public static function load(?DbiExtension $extension = null): self
{
if ($extension !== null) {
return new self($extension);
}
if (! Util::checkDbExtension('mysqli')) {
$docLink = sprintf(
__('See %sour documentation%s for more information.'),
'[doc@faqmysql]',
'[/doc]'
);
Core::warnMissingExtension('mysqli', true, $docLink);
}
return new self(new DbiMysqli());
}
/**
* Prepare an SQL statement for execution.
*
* @param string $query The query, as a string.
* @param int $link Link type.
*
* @return object|false A statement object or false.
*/
public function prepare(string $query, $link = self::CONNECT_USER)
{
return $this->extension->prepare($this->links[$link], $query);
}
}