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<?php |
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declare(strict_types=1); |
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namespace MySQLReplication\BinLog; |
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class BinLogServerInfo |
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{ |
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private const MYSQL_VERSION_MARIADB = 'MariaDB'; |
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private const MYSQL_VERSION_PERCONA = 'Percona'; |
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private const MYSQL_VERSION_GENERIC = 'MySQL'; |
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private static $serverInfo = []; |
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public static function parsePackage(string $data, string $version): void |
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{ |
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$i = 0; |
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$length = strlen($data); |
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self::$serverInfo['protocol_version'] = ord($data[$i]); |
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++$i; |
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//version |
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self::$serverInfo['server_version'] = ''; |
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$start = $i; |
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for ($i = $start; $i < $length; ++$i) { |
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if ($data[$i] === chr(0)) { |
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++$i; |
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break; |
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} |
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self::$serverInfo['server_version'] .= $data[$i]; |
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} |
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//connection_id 4 bytes |
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self::$serverInfo['connection_id'] = unpack('I', $data[$i] . $data[++$i] . $data[++$i] . $data[++$i])[1]; |
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++$i; |
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//auth_plugin_data_part_1 |
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//[len=8] first 8 bytes of the auth-plugin data |
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self::$serverInfo['salt'] = ''; |
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for ($j = $i; $j < $i + 8; ++$j) { |
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self::$serverInfo['salt'] .= $data[$j]; |
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} |
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$i += 8; |
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//filler_1 (1) -- 0x00 |
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++$i; |
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//capability_flag_1 (2) -- lower 2 bytes of the Protocol::CapabilityFlags (optional) |
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$i += 2; |
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//character_set (1) -- default server character-set, only the lower 8-bits Protocol::CharacterSet (optional) |
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self::$serverInfo['character_set'] = $data[$i]; |
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++$i; |
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//status_flags (2) -- Protocol::StatusFlags (optional) |
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$i += 2; |
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//capability_flags_2 (2) -- upper 2 bytes of the Protocol::CapabilityFlags |
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$i += 2; |
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//auth_plugin_data_len (1) -- length of the combined auth_plugin_data, if auth_plugin_data_len is > 0 |
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$salt_len = ord($data[$i]); |
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++$i; |
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$salt_len = max(12, $salt_len - 9); |
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$i += 10; |
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//next salt |
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if ($length >= $i + $salt_len) { |
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for ($j = $i; $j < $i + $salt_len; ++$j) { |
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self::$serverInfo['salt'] .= $data[$j]; |
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} |
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} |
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self::$serverInfo['auth_plugin_name'] = ''; |
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$i += $salt_len + 1; |
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for ($j = $i; $j < $length - 1; ++$j) { |
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self::$serverInfo['auth_plugin_name'] .= $data[$j]; |
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} |
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self::$serverInfo['version_name'] = self::parseVersion($version); |
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self::$serverInfo['version_revision'] = self::parseRevision($version); |
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} |
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public static function getSalt(): string |
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{ |
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return self::$serverInfo['salt']; |
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} |
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/** |
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* @see http://stackoverflow.com/questions/37317869/determine-if-mysql-or-percona-or-mariadb |
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*/ |
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private static function parseVersion(string $version): string |
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{ |
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if ('' !== $version) { |
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if (false !== strpos($version, self::MYSQL_VERSION_MARIADB)) { |
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return self::MYSQL_VERSION_MARIADB; |
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} |
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if (false !== strpos($version, self::MYSQL_VERSION_PERCONA)) { |
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return self::MYSQL_VERSION_PERCONA; |
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} |
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} |
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return self::MYSQL_VERSION_GENERIC; |
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} |
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public static function getRevision(): float |
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{ |
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return self::$serverInfo['version_revision']; |
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} |
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public static function getVersion(): string |
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{ |
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return self::$serverInfo['version_name']; |
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} |
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public static function isMariaDb(): bool |
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{ |
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return self::MYSQL_VERSION_MARIADB === self::getVersion(); |
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} |
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public static function isPercona(): bool |
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{ |
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return self::MYSQL_VERSION_PERCONA === self::getVersion(); |
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} |
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public static function isGeneric(): bool |
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{ |
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return self::MYSQL_VERSION_GENERIC === self::getVersion(); |
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} |
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58 |
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private static function parseRevision(string $version): float |
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{ |
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return (float)$version; |
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} |
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} |
krowinski /
php-mysql-replication
