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Current File : /usr/share/phpmyadmin/libraries/classes/Types.php
<?php
/* vim: set expandtab sw=4 ts=4 sts=4: */
/**
 * SQL data types definition
 *
 * @package PhpMyAdmin
 */
declare(strict_types=1);

namespace PhpMyAdmin;

use PhpMyAdmin\DatabaseInterface;

/**
 * Class holding type definitions for MySQL and MariaDB.
 *
 * @package PhpMyAdmin
 */
class Types
{
    /**
     * @var DatabaseInterface Database interface
     */
    private $_dbi;

    /**
     * Constructor
     *
     * @param DatabaseInterface $dbi Database interface instance
     */
    public function __construct($dbi)
    {
        $this->_dbi = $dbi;
    }

    /**
     * Returns list of unary operators.
     *
     * @return string[]
     */
    public function getUnaryOperators()
    {
        return [
            'IS NULL',
            'IS NOT NULL',
            "= ''",
            "!= ''",
        ];
    }

    /**
     * Check whether operator is unary.
     *
     * @param string $op operator name
     *
     * @return boolean
     */
    public function isUnaryOperator($op)
    {
        return in_array($op, $this->getUnaryOperators());
    }

    /**
     * Returns list of operators checking for NULL.
     *
     * @return string[]
     */
    public function getNullOperators()
    {
        return [
            'IS NULL',
            'IS NOT NULL',
        ];
    }

    /**
     * ENUM search operators
     *
     * @return string[]
     */
    public function getEnumOperators()
    {
        return [
            '=',
            '!=',
        ];
    }

    /**
     * TEXT search operators
     *
     * @return string[]
     */
    public function getTextOperators()
    {
        return [
            'LIKE',
            'LIKE %...%',
            'NOT LIKE',
            '=',
            '!=',
            'REGEXP',
            'REGEXP ^...$',
            'NOT REGEXP',
            "= ''",
            "!= ''",
            'IN (...)',
            'NOT IN (...)',
            'BETWEEN',
            'NOT BETWEEN',
        ];
    }

    /**
     * Number search operators
     *
     * @return string[]
     */
    public function getNumberOperators()
    {
        return [
            '=',
            '>',
            '>=',
            '<',
            '<=',
            '!=',
            'LIKE',
            'LIKE %...%',
            'NOT LIKE',
            'IN (...)',
            'NOT IN (...)',
            'BETWEEN',
            'NOT BETWEEN',
        ];
    }

    /**
     * Returns operators for given type
     *
     * @param string  $type Type of field
     * @param boolean $null Whether field can be NULL
     *
     * @return string[]
     */
    public function getTypeOperators($type, $null)
    {
        $ret = [];
        $class = $this->getTypeClass($type);

        if (strncasecmp($type, 'enum', 4) == 0) {
            $ret = array_merge($ret, $this->getEnumOperators());
        } elseif ($class == 'CHAR') {
            $ret = array_merge($ret, $this->getTextOperators());
        } else {
            $ret = array_merge($ret, $this->getNumberOperators());
        }

        if ($null) {
            $ret = array_merge($ret, $this->getNullOperators());
        }

        return $ret;
    }

    /**
     * Returns operators for given type as html options
     *
     * @param string  $type             Type of field
     * @param boolean $null             Whether field can be NULL
     * @param string  $selectedOperator Option to be selected
     *
     * @return string Generated Html
     */
    public function getTypeOperatorsHtml($type, $null, $selectedOperator = null)
    {
        $html = '';

        foreach ($this->getTypeOperators($type, $null) as $fc) {
            if (isset($selectedOperator) && $selectedOperator == $fc) {
                $selected = ' selected="selected"';
            } else {
                $selected = '';
            }
            $html .= '<option value="' . htmlspecialchars($fc) . '"'
                . $selected . '>'
                . htmlspecialchars($fc) . '</option>';
        }

        return $html;
    }

    /**
     * Returns the data type description.
     *
     * @param string $type The data type to get a description.
     *
     * @return string
     *
     */
    public function getTypeDescription($type)
    {
        $type = mb_strtoupper($type);
        switch ($type) {
            case 'TINYINT':
                return __(
                    'A 1-byte integer, signed range is -128 to 127, unsigned range is ' .
                    '0 to 255'
                );
            case 'SMALLINT':
                return __(
                    'A 2-byte integer, signed range is -32,768 to 32,767, unsigned ' .
                    'range is 0 to 65,535'
                );
            case 'MEDIUMINT':
                return __(
                    'A 3-byte integer, signed range is -8,388,608 to 8,388,607, ' .
                    'unsigned range is 0 to 16,777,215'
                );
            case 'INT':
                return __(
                    'A 4-byte integer, signed range is ' .
                    '-2,147,483,648 to 2,147,483,647, unsigned range is 0 to ' .
                    '4,294,967,295'
                );
            case 'BIGINT':
                return __(
                    'An 8-byte integer, signed range is -9,223,372,036,854,775,808 ' .
                    'to 9,223,372,036,854,775,807, unsigned range is 0 to ' .
                    '18,446,744,073,709,551,615'
                );
            case 'DECIMAL':
                return __(
                    'A fixed-point number (M, D) - the maximum number of digits (M) ' .
                    'is 65 (default 10), the maximum number of decimals (D) is 30 ' .
                    '(default 0)'
                );
            case 'FLOAT':
                return __(
                    'A small floating-point number, allowable values are ' .
                    '-3.402823466E+38 to -1.175494351E-38, 0, and 1.175494351E-38 to ' .
                    '3.402823466E+38'
                );
            case 'DOUBLE':
                return __(
                    'A double-precision floating-point number, allowable values are ' .
                    '-1.7976931348623157E+308 to -2.2250738585072014E-308, 0, and ' .
                    '2.2250738585072014E-308 to 1.7976931348623157E+308'
                );
            case 'REAL':
                return __(
                    'Synonym for DOUBLE (exception: in REAL_AS_FLOAT SQL mode it is ' .
                    'a synonym for FLOAT)'
                );
            case 'BIT':
                return __(
                    'A bit-field type (M), storing M of bits per value (default is 1, ' .
                    'maximum is 64)'
                );
            case 'BOOLEAN':
                return __(
                    'A synonym for TINYINT(1), a value of zero is considered false, ' .
                    'nonzero values are considered true'
                );
            case 'SERIAL':
                return __('An alias for BIGINT UNSIGNED NOT NULL AUTO_INCREMENT UNIQUE');
            case 'DATE':
                return sprintf(
                    __('A date, supported range is %1$s to %2$s'),
                    '1000-01-01',
                    '9999-12-31'
                );
            case 'DATETIME':
                return sprintf(
                    __('A date and time combination, supported range is %1$s to %2$s'),
                    '1000-01-01 00:00:00',
                    '9999-12-31 23:59:59'
                );
            case 'TIMESTAMP':
                return __(
                    'A timestamp, range is 1970-01-01 00:00:01 UTC to 2038-01-09 ' .
                    '03:14:07 UTC, stored as the number of seconds since the epoch ' .
                    '(1970-01-01 00:00:00 UTC)'
                );
            case 'TIME':
                return sprintf(
                    __('A time, range is %1$s to %2$s'),
                    '-838:59:59',
                    '838:59:59'
                );
            case 'YEAR':
                return __(
                    "A year in four-digit (4, default) or two-digit (2) format, the " .
                    "allowable values are 70 (1970) to 69 (2069) or 1901 to 2155 and " .
                    "0000"
                );
            case 'CHAR':
                return __(
                    'A fixed-length (0-255, default 1) string that is always ' .
                    'right-padded with spaces to the specified length when stored'
                );
            case 'VARCHAR':
                return sprintf(
                    __(
                        'A variable-length (%s) string, the effective maximum length ' .
                        'is subject to the maximum row size'
                    ),
                    '0-65,535'
                );
            case 'TINYTEXT':
                return __(
                    'A TEXT column with a maximum length of 255 (2^8 - 1) characters, ' .
                    'stored with a one-byte prefix indicating the length of the value ' .
                    'in bytes'
                );
            case 'TEXT':
                return __(
                    'A TEXT column with a maximum length of 65,535 (2^16 - 1) ' .
                    'characters, stored with a two-byte prefix indicating the length ' .
                    'of the value in bytes'
                );
            case 'MEDIUMTEXT':
                return __(
                    'A TEXT column with a maximum length of 16,777,215 (2^24 - 1) ' .
                    'characters, stored with a three-byte prefix indicating the ' .
                    'length of the value in bytes'
                );
            case 'LONGTEXT':
                return __(
                    'A TEXT column with a maximum length of 4,294,967,295 or 4GiB ' .
                    '(2^32 - 1) characters, stored with a four-byte prefix indicating ' .
                    'the length of the value in bytes'
                );
            case 'BINARY':
                return __(
                    'Similar to the CHAR type, but stores binary byte strings rather ' .
                    'than non-binary character strings'
                );
            case 'VARBINARY':
                return __(
                    'Similar to the VARCHAR type, but stores binary byte strings ' .
                    'rather than non-binary character strings'
                );
            case 'TINYBLOB':
                return __(
                    'A BLOB column with a maximum length of 255 (2^8 - 1) bytes, ' .
                    'stored with a one-byte prefix indicating the length of the value'
                );
            case 'MEDIUMBLOB':
                return __(
                    'A BLOB column with a maximum length of 16,777,215 (2^24 - 1) ' .
                    'bytes, stored with a three-byte prefix indicating the length of ' .
                    'the value'
                );
            case 'BLOB':
                return __(
                    'A BLOB column with a maximum length of 65,535 (2^16 - 1) bytes, ' .
                    'stored with a two-byte prefix indicating the length of the value'
                );
            case 'LONGBLOB':
                return __(
                    'A BLOB column with a maximum length of 4,294,967,295 or 4GiB ' .
                    '(2^32 - 1) bytes, stored with a four-byte prefix indicating the ' .
                    'length of the value'
                );
            case 'ENUM':
                return __(
                    "An enumeration, chosen from the list of up to 65,535 values or " .
                    "the special '' error value"
                );
            case 'SET':
                return __("A single value chosen from a set of up to 64 members");
            case 'GEOMETRY':
                return __('A type that can store a geometry of any type');
            case 'POINT':
                return __('A point in 2-dimensional space');
            case 'LINESTRING':
                return __('A curve with linear interpolation between points');
            case 'POLYGON':
                return __('A polygon');
            case 'MULTIPOINT':
                return __('A collection of points');
            case 'MULTILINESTRING':
                return __(
                    'A collection of curves with linear interpolation between points'
                );
            case 'MULTIPOLYGON':
                return __('A collection of polygons');
            case 'GEOMETRYCOLLECTION':
                return __('A collection of geometry objects of any type');
            case 'JSON':
                return __(
                    'Stores and enables efficient access to data in JSON'
                    . ' (JavaScript Object Notation) documents'
                );
        }
        return '';
    }

    /**
     * Returns class of a type, used for functions available for type
     * or default values.
     *
     * @param string $type The data type to get a class.
     *
     * @return string
     *
     */
    public function getTypeClass($type)
    {
        $type = mb_strtoupper((string) $type);
        switch ($type) {
            case 'TINYINT':
            case 'SMALLINT':
            case 'MEDIUMINT':
            case 'INT':
            case 'BIGINT':
            case 'DECIMAL':
            case 'FLOAT':
            case 'DOUBLE':
            case 'REAL':
            case 'BIT':
            case 'BOOLEAN':
            case 'SERIAL':
                return 'NUMBER';

            case 'DATE':
            case 'DATETIME':
            case 'TIMESTAMP':
            case 'TIME':
            case 'YEAR':
                return 'DATE';

            case 'CHAR':
            case 'VARCHAR':
            case 'TINYTEXT':
            case 'TEXT':
            case 'MEDIUMTEXT':
            case 'LONGTEXT':
            case 'BINARY':
            case 'VARBINARY':
            case 'TINYBLOB':
            case 'MEDIUMBLOB':
            case 'BLOB':
            case 'LONGBLOB':
            case 'ENUM':
            case 'SET':
                return 'CHAR';

            case 'GEOMETRY':
            case 'POINT':
            case 'LINESTRING':
            case 'POLYGON':
            case 'MULTIPOINT':
            case 'MULTILINESTRING':
            case 'MULTIPOLYGON':
            case 'GEOMETRYCOLLECTION':
                return 'SPATIAL';

            case 'JSON':
                return 'JSON';
        }

        return '';
    }

    /**
     * Returns array of functions available for a class.
     *
     * @param string $class The class to get function list.
     *
     * @return string[]
     *
     */
    public function getFunctionsClass($class)
    {
        $isMariaDB = $this->_dbi->isMariaDB();
        $serverVersion = $this->_dbi->getVersion();

        switch ($class) {
            case 'CHAR':
                $ret = [
                    'AES_DECRYPT',
                    'AES_ENCRYPT',
                    'BIN',
                    'CHAR',
                    'COMPRESS',
                    'CURRENT_USER',
                    'DATABASE',
                    'DAYNAME',
                    'DES_DECRYPT',
                    'DES_ENCRYPT',
                    'ENCRYPT',
                    'HEX',
                    'INET6_NTOA',
                    'INET_NTOA',
                    'LOAD_FILE',
                    'LOWER',
                    'LTRIM',
                    'MD5',
                    'MONTHNAME',
                    'OLD_PASSWORD',
                    'PASSWORD',
                    'QUOTE',
                    'REVERSE',
                    'RTRIM',
                    'SHA1',
                    'SOUNDEX',
                    'SPACE',
                    'TRIM',
                    'UNCOMPRESS',
                    'UNHEX',
                    'UPPER',
                    'USER',
                    'UUID',
                    'VERSION',
                ];

                if (($isMariaDB && $serverVersion < 100012)
                || $serverVersion < 50603
                ) {
                    $ret = array_diff($ret, ['INET6_NTOA']);
                }
                return $ret;

            case 'DATE':
                return [
                    'CURRENT_DATE',
                    'CURRENT_TIME',
                    'DATE',
                    'FROM_DAYS',
                    'FROM_UNIXTIME',
                    'LAST_DAY',
                    'NOW',
                    'SEC_TO_TIME',
                    'SYSDATE',
                    'TIME',
                    'TIMESTAMP',
                    'UTC_DATE',
                    'UTC_TIME',
                    'UTC_TIMESTAMP',
                    'YEAR',
                ];

            case 'NUMBER':
                $ret = [
                    'ABS',
                    'ACOS',
                    'ASCII',
                    'ASIN',
                    'ATAN',
                    'BIT_LENGTH',
                    'BIT_COUNT',
                    'CEILING',
                    'CHAR_LENGTH',
                    'CONNECTION_ID',
                    'COS',
                    'COT',
                    'CRC32',
                    'DAYOFMONTH',
                    'DAYOFWEEK',
                    'DAYOFYEAR',
                    'DEGREES',
                    'EXP',
                    'FLOOR',
                    'HOUR',
                    'INET6_ATON',
                    'INET_ATON',
                    'LENGTH',
                    'LN',
                    'LOG',
                    'LOG2',
                    'LOG10',
                    'MICROSECOND',
                    'MINUTE',
                    'MONTH',
                    'OCT',
                    'ORD',
                    'PI',
                    'QUARTER',
                    'RADIANS',
                    'RAND',
                    'ROUND',
                    'SECOND',
                    'SIGN',
                    'SIN',
                    'SQRT',
                    'TAN',
                    'TO_DAYS',
                    'TO_SECONDS',
                    'TIME_TO_SEC',
                    'UNCOMPRESSED_LENGTH',
                    'UNIX_TIMESTAMP',
                    'UUID_SHORT',
                    'WEEK',
                    'WEEKDAY',
                    'WEEKOFYEAR',
                    'YEARWEEK',
                ];
                if (($isMariaDB && $serverVersion < 100012)
                || $serverVersion < 50603
                ) {
                    $ret = array_diff($ret, ['INET6_ATON']);
                }
                return $ret;

            case 'SPATIAL':
                if ($serverVersion >= 50600) {
                    return [
                        'ST_GeomFromText',
                        'ST_GeomFromWKB',

                        'ST_GeomCollFromText',
                        'ST_LineFromText',
                        'ST_MLineFromText',
                        'ST_PointFromText',
                        'ST_MPointFromText',
                        'ST_PolyFromText',
                        'ST_MPolyFromText',

                        'ST_GeomCollFromWKB',
                        'ST_LineFromWKB',
                        'ST_MLineFromWKB',
                        'ST_PointFromWKB',
                        'ST_MPointFromWKB',
                        'ST_PolyFromWKB',
                        'ST_MPolyFromWKB',
                    ];
                } else {
                    return [
                        'GeomFromText',
                        'GeomFromWKB',

                        'GeomCollFromText',
                        'LineFromText',
                        'MLineFromText',
                        'PointFromText',
                        'MPointFromText',
                        'PolyFromText',
                        'MPolyFromText',

                        'GeomCollFromWKB',
                        'LineFromWKB',
                        'MLineFromWKB',
                        'PointFromWKB',
                        'MPointFromWKB',
                        'PolyFromWKB',
                        'MPolyFromWKB',
                    ];
                }
        }
        return [];
    }

    /**
     * Returns array of functions available for a type.
     *
     * @param string $type The data type to get function list.
     *
     * @return string[]
     *
     */
    public function getFunctions($type)
    {
        $class = $this->getTypeClass($type);
        return $this->getFunctionsClass($class);
    }

    /**
     * Returns array of all functions available.
     *
     * @return string[]
     *
     */
    public function getAllFunctions()
    {
        $ret = array_merge(
            $this->getFunctionsClass('CHAR'),
            $this->getFunctionsClass('NUMBER'),
            $this->getFunctionsClass('DATE'),
            $this->getFunctionsClass('UUID')
        );
        sort($ret);
        return $ret;
    }

    /**
     * Returns array of all attributes available.
     *
     * @return string[]
     *
     */
    public function getAttributes()
    {
        return [
            '',
            'BINARY',
            'UNSIGNED',
            'UNSIGNED ZEROFILL',
            'on update CURRENT_TIMESTAMP',
        ];
    }

    /**
     * Returns array of all column types available.
     *
     * VARCHAR, TINYINT, TEXT and DATE are listed first, based on
     * estimated popularity.
     *
     * @return string[]
     *
     */
    public function getColumns()
    {
        $isMariaDB = $this->_dbi->isMariaDB();
        $serverVersion = $this->_dbi->getVersion();

        // most used types
        $ret = [
            'INT',
            'VARCHAR',
            'TEXT',
            'DATE',
        ];
        // numeric
        $ret[_pgettext('numeric types', 'Numeric')] = [
            'TINYINT',
            'SMALLINT',
            'MEDIUMINT',
            'INT',
            'BIGINT',
            '-',
            'DECIMAL',
            'FLOAT',
            'DOUBLE',
            'REAL',
            '-',
            'BIT',
            'BOOLEAN',
            'SERIAL',
        ];

        // Date/Time
        $ret[_pgettext('date and time types', 'Date and time')] = [
            'DATE',
            'DATETIME',
            'TIMESTAMP',
            'TIME',
            'YEAR',
        ];

        // Text
        $ret[_pgettext('string types', 'String')] = [
            'CHAR',
            'VARCHAR',
            '-',
            'TINYTEXT',
            'TEXT',
            'MEDIUMTEXT',
            'LONGTEXT',
            '-',
            'BINARY',
            'VARBINARY',
            '-',
            'TINYBLOB',
            'BLOB',
            'MEDIUMBLOB',
            'LONGBLOB',
            '-',
            'ENUM',
            'SET',
        ];

        $ret[_pgettext('spatial types', 'Spatial')] = [
            'GEOMETRY',
            'POINT',
            'LINESTRING',
            'POLYGON',
            'MULTIPOINT',
            'MULTILINESTRING',
            'MULTIPOLYGON',
            'GEOMETRYCOLLECTION',
        ];

        if (($isMariaDB && $serverVersion > 100207)
            || (! $isMariaDB && $serverVersion >= 50708)) {
            $ret['JSON'] = [
                'JSON',
            ];
        }

        return $ret;
    }

    /**
     * Returns an array of integer types
     *
     * @return string[] integer types
     */
    public function getIntegerTypes()
    {
        return [
            'tinyint',
            'smallint',
            'mediumint',
            'int',
            'bigint',
        ];
    }

    /**
     * Returns the min and max values of a given integer type
     *
     * @param string  $type   integer type
     * @param boolean $signed whether signed
     *
     * @return string[] min and max values
     */
    public function getIntegerRange($type, $signed = true)
    {
        static $min_max_data = [
            'unsigned' => [
                'tinyint'   => [
                    '0',
                    '255',
                ],
                'smallint'  => [
                    '0',
                    '65535',
                ],
                'mediumint' => [
                    '0',
                    '16777215',
                ],
                'int'       => [
                    '0',
                    '4294967295',
                ],
                'bigint'    => [
                    '0',
                    '18446744073709551615',
                ],
            ],
            'signed' => [
                'tinyint'   => [
                    '-128',
                    '127',
                ],
                'smallint'  => [
                    '-32768',
                    '32767',
                ],
                'mediumint' => [
                    '-8388608',
                    '8388607',
                ],
                'int'       => [
                    '-2147483648',
                    '2147483647',
                ],
                'bigint'    => [
                    '-9223372036854775808',
                    '9223372036854775807',
                ],
            ],
        ];
        $relevantArray = $signed
            ? $min_max_data['signed']
            : $min_max_data['unsigned'];
        return isset($relevantArray[$type]) ? $relevantArray[$type] : [
            '',
            '',
        ];
    }
}

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