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<?php
// MySQLi supports everything, MySQL doesn't support multiple result sets, PDO_MySQL doesn't support orgtable
if (extension_loaded("mysqli")) {
class Min_DB extends MySQLi {
var $extension = "MySQLi";
function Min_DB() {
parent::init();
}
function connect($server, $username, $password) {
list($host, $port) = explode(":", $server, 2); // part after : is used for port or socket
return @$this->real_connect(
($server != "" ? $host : ini_get("mysqli.default_host")),
("$server$username" != "" ? $username : ini_get("mysqli.default_user")),
("$server$username$password" != "" ? $password : ini_get("mysqli.default_pw")),
null,
(is_numeric($port) ? $port : ini_get("mysqli.default_port")),
(!is_numeric($port) ? $port : null)
);
}
function result($result, $field = 0) {
if (!$result) {
return false;
}
$row = $result->fetch_array();
return $row[$field];
}
function quote($string) {
return "'" . $this->escape_string($string) . "'";
}
}
} elseif (extension_loaded("mysql")) {
class Min_DB {
var $extension = "MySQL", $_link, $_result, $server_info, $affected_rows, $error;
function connect($server, $username, $password) {
$this->_link = @mysql_connect(
($server != "" ? $server : ini_get("mysql.default_host")),
("$server$username" != "" ? $username : ini_get("mysql.default_user")),
("$server$username$password" != "" ? $password : ini_get("mysql.default_password")),
true,
131072 // CLIENT_MULTI_RESULTS for CALL
);
if ($this->_link) {
$this->server_info = mysql_get_server_info($this->_link);
} else {
$this->error = mysql_error();
}
return (bool) $this->_link;
}
function quote($string) {
return "'" . mysql_real_escape_string($string, $this->_link) . "'";
}
function select_db($database) {
return mysql_select_db($database, $this->_link);
}
function query($query, $unbuffered = false) {
$result = @($unbuffered ? mysql_unbuffered_query($query, $this->_link) : mysql_query($query, $this->_link)); // @ - mute mysql.trace_mode
if (!$result) {
$this->error = mysql_error($this->_link);
return false;
}
if ($result === true) {
$this->affected_rows = mysql_affected_rows($this->_link);
$this->info = mysql_info($this->_link);
return true;
}
return new Min_Result($result);
}
function multi_query($query) {
return $this->_result = $this->query($query);
}
function store_result() {
return $this->_result;
}
function next_result() {
// MySQL extension doesn't support multiple results
return false;
}
function result($result, $field = 0) {
if (!$result) {
return false;
}
return mysql_result($result->_result, 0, $field);
}
}
class Min_Result {
var $_result, $_offset = 0, $num_rows;
function Min_Result($result) {
$this->_result = $result;
$this->num_rows = mysql_num_rows($result);
}
function fetch_assoc() {
return mysql_fetch_assoc($this->_result);
}
function fetch_row() {
return mysql_fetch_row($this->_result);
}
function fetch_field() {
$row = mysql_fetch_field($this->_result, $this->_offset++);
$row->orgtable = $row->table;
$row->orgname = $row->name;
$row->charsetnr = ($row->blob ? 63 : 0);
return $row;
}
function __destruct() {
mysql_free_result($this->_result); //! is not called in PHP 4 which is a problem with mysql.trace_mode
}
}
} elseif (extension_loaded("pdo_mysql")) {
class Min_DB extends Min_PDO {
var $extension = "PDO_MySQL";
function connect($server, $username, $password) {
$this->dsn("mysql:host=" . str_replace(":", ";unix_socket=", preg_replace('~:([0-9])~', ';port=\\1', $server)), $username, $password);
$this->server_info = $this->result($this->query("SELECT VERSION()"));
return true;
}
function query($query, $unbuffered = false) {
$this->setAttribute(1000, !$unbuffered); // 1000 - PDO::MYSQL_ATTR_USE_BUFFERED_QUERY
return parent::query($query, $unbuffered);
}
}
} else {
page_header(lang('No MySQL extension'), lang('None of the supported PHP extensions (%s) are available.', 'MySQLi, MySQL, PDO_MySQL'), null);
page_footer("auth");
exit;
}
/** Connect to the database
* @return mixed Min_DB or string for error
*/
function connect() {
global $adminer;
$connection = new Min_DB;
$credentials = $adminer->credentials();
if ($connection->connect($credentials[0], $credentials[1], $credentials[2])) {
$connection->query("SET SQL_QUOTE_SHOW_CREATE=1");
$connection->query("SET NAMES utf8");
return $connection;
}
return $connection->error;
}
/** Get cached list of databases
* @param bool
* @return array
*/
function get_databases($flush = true) {
// SHOW DATABASES can take a very long time so it is cached
$return = &$_SESSION["databases"][$_GET["server"]];
if (!isset($return)) {
restart_session();
$return = get_vals("SHOW DATABASES");
if ($flush) {
ob_flush();
flush();
}
}
return $return;
}
/** Get database collation
* @param string
* @param array result of collations()
* @return array
*/
function db_collation($db, $collations) {
global $connection;
$return = null;
$result = $connection->query("SHOW CREATE DATABASE " . idf_escape($db));
if ($result) {
$create = $connection->result($result, 1);
if (preg_match('~ COLLATE ([^ ]+)~', $create, $match)) {
$return = $match[1];
} elseif (preg_match('~ CHARACTER SET ([^ ]+)~', $create, $match)) {
// default collation
$return = $collations[$match[1]][0];
}
}
return $return;
}
/**Get supported engines
* @return array
*/
function engines() {
global $connection;
$return = array();
$result = $connection->query("SHOW ENGINES");
while ($row = $result->fetch_assoc()) {
if (ereg("YES|DEFAULT", $row["Support"])) {
$return[] = $row["Engine"];
}
}
return $return;
}
/** Get tables list
* @return array
*/
function tables_list() {
return get_vals("SHOW TABLES");
}
/** Get table status
* @param string
* @return array
*/
function table_status($name = "") {
global $connection;
$return = array();
$result = $connection->query("SHOW TABLE STATUS" . ($name != "" ? " LIKE " . $connection->quote(addcslashes($name, "%_")) : ""));
while ($row = $result->fetch_assoc()) {
if ($row["Engine"] == "InnoDB") {
// ignore internal comment, unnecessary since MySQL 5.1.21
$row["Comment"] = preg_replace('~(?:(.+); )?InnoDB free: .*~', '\\1', $row["Comment"]);
}
if ($name != "") {
return $row;
}
$return[$row["Name"]] = $row;
}
return $return;
}
/** Get status of referencable tables
* @return array
*/
function table_status_referencable() {
$return = array();
foreach (table_status() as $name => $row) {
if ($row["Engine"] == "InnoDB") {
$return[$name] = $row;
}
}
return $return;
}
/** Get information about fields
* @param string
* @return array array($name => array("field" => , "full_type" => , "type" => , "length" => , "unsigned" => , "default" => , "null" => , "auto_increment" => , "on_update" => , "collation" => , "privileges" => , "comment" => , "primary" => ))
*/
function fields($table) {
global $connection;
$return = array();
$result = $connection->query("SHOW FULL COLUMNS FROM " . idf_escape($table));
if ($result) {
while ($row = $result->fetch_assoc()) {
preg_match('~^([^( ]+)(?:\\((.+)\\))?( unsigned)?( zerofill)?$~', $row["Type"], $match);
$return[$row["Field"]] = array(
"field" => $row["Field"],
"full_type" => $row["Type"],
"type" => $match[1],
"length" => $match[2],
"unsigned" => ltrim($match[3] . $match[4]),
"default" => ($row["Default"] != "" || ereg("char", $match[1]) ? $row["Default"] : null),
"null" => ($row["Null"] == "YES"),
"auto_increment" => ($row["Extra"] == "auto_increment"),
"on_update" => (eregi('^on update (.+)', $row["Extra"], $match) ? $match[1] : ""), //! available since MySQL 5.1.23
"collation" => $row["Collation"],
"privileges" => array_flip(explode(",", $row["Privileges"])),
"comment" => $row["Comment"],
"primary" => ($row["Key"] == "PRI"),
);
}
}
return $return;
}
/** Get table indexes
* @param string
* @param string Min_DB to use
* @return array array($key_name => array("type" => , "columns" => array(), "lengths" => array()))
*/
function indexes($table, $connection2 = null) {
global $connection;
if (!is_object($connection2)) { // use the main connection if the separate connection is unavailable
$connection2 = $connection;
}
$return = array();
$result = $connection2->query("SHOW INDEX FROM " . idf_escape($table));
if ($result) {
while ($row = $result->fetch_assoc()) {
$return[$row["Key_name"]]["type"] = ($row["Key_name"] == "PRIMARY" ? "PRIMARY" : ($row["Index_type"] == "FULLTEXT" ? "FULLTEXT" : ($row["Non_unique"] ? "INDEX" : "UNIQUE")));
$return[$row["Key_name"]]["columns"][$row["Seq_in_index"]] = $row["Column_name"];
$return[$row["Key_name"]]["lengths"][$row["Seq_in_index"]] = $row["Sub_part"];
}
}
return $return;
}
/** Get foreign keys in table
* @param string
* @return array array($name => array("db" => , "table" => , "source" => array(), "target" => array(), "on_delete" => , "on_update" => ))
*/
function foreign_keys($table) {
global $connection, $on_actions;
static $pattern = '(?:[^`]|``)+';
$return = array();
$result = $connection->query("SHOW CREATE TABLE " . idf_escape($table));
if ($result) {
$create_table = $connection->result($result, 1);
preg_match_all("~CONSTRAINT `($pattern)` FOREIGN KEY \\(((?:`$pattern`,? ?)+)\\) REFERENCES `($pattern)`(?:\\.`($pattern)`)? \\(((?:`$pattern`,? ?)+)\\)(?: ON DELETE (" . implode("|", $on_actions) . "))?(?: ON UPDATE (" . implode("|", $on_actions) . "))?~", $create_table, $matches, PREG_SET_ORDER);
foreach ($matches as $match) {
preg_match_all("~`($pattern)`~", $match[2], $source);
preg_match_all("~`($pattern)`~", $match[5], $target);
$return[$match[1]] = array(
"db" => idf_unescape($match[4] != "" ? $match[3] : $match[4]),
"table" => idf_unescape($match[4] != "" ? $match[4] : $match[3]),
"source" => array_map('idf_unescape', $source[1]),
"target" => array_map('idf_unescape', $target[1]),
"on_delete" => $match[6],
"on_update" => $match[7],
);
}
}
return $return;
}
/** Get view SELECT
* @param string
* @return array array("select" => )
*/
function view($name) {
global $connection;
return array("select" => preg_replace('~^(?:[^`]|`[^`]*`)* AS ~U', '', $connection->result($connection->query("SHOW CREATE VIEW " . idf_escape($name)), 1)));
}
/** Get sorted grouped list of collations
* @return array
*/
function collations() {
global $connection;
$return = array();
$result = $connection->query("SHOW COLLATION");
while ($row = $result->fetch_assoc()) {
$return[$row["Charset"]][] = $row["Collation"];
}
ksort($return);
foreach ($return as $key => $val) {
sort($return[$key]);
}
return $return;
}
/** Find out if database is information_schema
* @param string
* @return bool
*/
function information_schema($db) {
global $connection;
return ($connection->server_info >= 5 && $db == "information_schema");
}
/** Get escaped error message
* @return string
*/
function error() {
global $connection;
return h(preg_replace('~^You have an error.*syntax to use~U', "Syntax error", $connection->error));
}
/** Return expression for binary comparison
* @param string
* @return string
*/
function exact_value($val) {
global $connection;
return "BINARY " . $connection->quote($val);
}
// value means maximum unsigned length
$types = array();
$structured_types = array();
foreach (array(
lang('Numbers') => array("tinyint" => 3, "smallint" => 5, "mediumint" => 8, "int" => 10, "bigint" => 20, "decimal" => 66, "float" => 12, "double" => 21),
lang('Date and time') => array("date" => 10, "datetime" => 19, "timestamp" => 19, "time" => 10, "year" => 4),
lang('Strings') => array("char" => 255, "varchar" => 65535, "tinytext" => 255, "text" => 65535, "mediumtext" => 16777215, "longtext" => 4294967295),
lang('Binary') => array("binary" => 255, "varbinary" => 65535, "tinyblob" => 255, "blob" => 65535, "mediumblob" => 16777215, "longblob" => 4294967295),
lang('Lists') => array("enum" => 65535, "set" => 64),
) as $key => $val) {
$types += $val;
$structured_types[$key] = array_keys($val);
}
$unsigned = array("unsigned", "zerofill", "unsigned zerofill");

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