/phpmyadmin/libraries/dbi/mysql.dbi.lib.php
PHP | 476 lines | 246 code | 42 blank | 188 comment | 62 complexity | 7c2c97d048b2320a768285d7d79d9d45 MD5 | raw file
Possible License(s): GPL-2.0
- <?php
- /* vim: set expandtab sw=4 ts=4 sts=4: */
- /**
- * Interface to the classic MySQL extension
- *
- * @package PhpMyAdmin-DBI-MySQL
- */
- if (! defined('PHPMYADMIN')) {
- exit;
- }
- require_once './libraries/logging.lib.php';
- /**
- * MySQL client API
- */
- if (! defined('PMA_MYSQL_CLIENT_API')) {
- $client_api = explode('.', mysql_get_client_info());
- define('PMA_MYSQL_CLIENT_API', (int)sprintf('%d%02d%02d', $client_api[0], $client_api[1], intval($client_api[2])));
- unset($client_api);
- }
- /**
- * Helper function for connecting to the database server
- *
- * @param string $server
- * @param string $user
- * @param string $password
- * @param int $client_flags
- * @param bool $persistent
- * @return mixed false on error or a mysql connection resource on success
- */
- function PMA_DBI_real_connect($server, $user, $password, $client_flags, $persistent = false)
- {
- global $cfg;
- if (empty($client_flags)) {
- if ($cfg['PersistentConnections'] || $persistent) {
- $link = @mysql_pconnect($server, $user, $password);
- } else {
- $link = @mysql_connect($server, $user, $password);
- }
- } else {
- if ($cfg['PersistentConnections'] || $persistent) {
- $link = @mysql_pconnect($server, $user, $password, $client_flags);
- } else {
- $link = @mysql_connect($server, $user, $password, false, $client_flags);
- }
- }
- return $link;
- }
- /**
- * connects to the database server
- *
- * @param string $user mysql user name
- * @param string $password mysql user password
- * @param bool $is_controluser
- * @param array $server host/port/socket/persistent
- * @param bool $auxiliary_connection (when true, don't go back to login if connection fails)
- * @return mixed false on error or a mysqli object on success
- */
- function PMA_DBI_connect($user, $password, $is_controluser = false, $server = null, $auxiliary_connection = false)
- {
- global $cfg;
- if ($server) {
- $server_port = (empty($server['port']))
- ? ''
- : ':' . (int)$server['port'];
- $server_socket = (empty($server['socket']))
- ? ''
- : ':' . $server['socket'];
- } else {
- $server_port = (empty($cfg['Server']['port']))
- ? ''
- : ':' . (int)$cfg['Server']['port'];
- $server_socket = (empty($cfg['Server']['socket']))
- ? ''
- : ':' . $cfg['Server']['socket'];
- }
- $client_flags = 0;
- // always use CLIENT_LOCAL_FILES as defined in mysql_com.h
- // for the case where the client library was not compiled
- // with --enable-local-infile
- $client_flags |= 128;
- /* Optionally compress connection */
- if (defined('MYSQL_CLIENT_COMPRESS') && $cfg['Server']['compress']) {
- $client_flags |= MYSQL_CLIENT_COMPRESS;
- }
- /* Optionally enable SSL */
- if (defined('MYSQL_CLIENT_SSL') && $cfg['Server']['ssl']) {
- $client_flags |= MYSQL_CLIENT_SSL;
- }
- if (!$server) {
- $link = PMA_DBI_real_connect($cfg['Server']['host'] . $server_port . $server_socket, $user, $password, empty($client_flags) ? null : $client_flags);
- // Retry with empty password if we're allowed to
- if (empty($link) && $cfg['Server']['nopassword'] && !$is_controluser) {
- $link = PMA_DBI_real_connect($cfg['Server']['host'] . $server_port . $server_socket, $user, '', empty($client_flags) ? null : $client_flags);
- }
- } else {
- if (!isset($server['host'])) {
- $link = PMA_DBI_real_connect($server_socket, $user, $password, null);
- } else {
- $link = PMA_DBI_real_connect($server['host'] . $server_port . $server_socket, $user, $password, null);
- }
- }
- if (empty($link)) {
- if ($is_controluser) {
- trigger_error(__('Connection for controluser as defined in your configuration failed.'), E_USER_WARNING);
- return false;
- }
- // we could be calling PMA_DBI_connect() to connect to another
- // server, for example in the Synchronize feature, so do not
- // go back to main login if it fails
- if (! $auxiliary_connection) {
- PMA_log_user($user, 'mysql-denied');
- PMA_auth_fails();
- } else {
- return false;
- }
- } // end if
- if (! $server) {
- PMA_DBI_postConnect($link, $is_controluser);
- }
- return $link;
- }
- /**
- * selects given database
- *
- * @param string $dbname name of db to select
- * @param resource $link mysql link resource
- * @return bool
- */
- function PMA_DBI_select_db($dbname, $link = null)
- {
- if (empty($link)) {
- if (isset($GLOBALS['userlink'])) {
- $link = $GLOBALS['userlink'];
- } else {
- return false;
- }
- }
- return mysql_select_db($dbname, $link);
- }
- /**
- * runs a query and returns the result
- *
- * @param string $query query to run
- * @param resource $link mysql link resource
- * @param int $options
- * @return mixed
- */
- function PMA_DBI_real_query($query, $link, $options)
- {
- if ($options == ($options | PMA_DBI_QUERY_STORE)) {
- return mysql_query($query, $link);
- } elseif ($options == ($options | PMA_DBI_QUERY_UNBUFFERED)) {
- return mysql_unbuffered_query($query, $link);
- } else {
- return mysql_query($query, $link);
- }
- }
- /**
- * returns array of rows with associative and numeric keys from $result
- *
- * @param resource $result
- * @return array
- */
- function PMA_DBI_fetch_array($result)
- {
- return mysql_fetch_array($result, MYSQL_BOTH);
- }
- /**
- * returns array of rows with associative keys from $result
- *
- * @param resource $result
- * @return array
- */
- function PMA_DBI_fetch_assoc($result)
- {
- return mysql_fetch_array($result, MYSQL_ASSOC);
- }
- /**
- * returns array of rows with numeric keys from $result
- *
- * @param resource $result
- * @return array
- */
- function PMA_DBI_fetch_row($result)
- {
- return mysql_fetch_array($result, MYSQL_NUM);
- }
- /**
- * Adjusts the result pointer to an arbitrary row in the result
- *
- * @param $result
- * @param $offset
- * @return bool true on success, false on failure
- */
- function PMA_DBI_data_seek($result, $offset)
- {
- return mysql_data_seek($result, $offset);
- }
- /**
- * Frees memory associated with the result
- *
- * @param resource $result
- */
- function PMA_DBI_free_result($result)
- {
- if (is_resource($result) && get_resource_type($result) === 'mysql result') {
- mysql_free_result($result);
- }
- }
- /**
- * Check if there are any more query results from a multi query
- *
- * @return bool false
- */
- function PMA_DBI_more_results()
- {
- // N.B.: PHP's 'mysql' extension does not support
- // multi_queries so this function will always
- // return false. Use the 'mysqli' extension, if
- // you need support for multi_queries.
- return false;
- }
- /**
- * Prepare next result from multi_query
- *
- * @return boo false
- */
- function PMA_DBI_next_result()
- {
- // N.B.: PHP's 'mysql' extension does not support
- // multi_queries so this function will always
- // return false. Use the 'mysqli' extension, if
- // you need support for multi_queries.
- return false;
- }
- /**
- * Returns a string representing the type of connection used
- *
- * @param resource $link mysql link
- * @return string type of connection used
- */
- function PMA_DBI_get_host_info($link = null)
- {
- if (null === $link) {
- if (isset($GLOBALS['userlink'])) {
- $link = $GLOBALS['userlink'];
- } else {
- return false;
- }
- }
- return mysql_get_host_info($link);
- }
- /**
- * Returns the version of the MySQL protocol used
- *
- * @param resource $link mysql link
- * @return int version of the MySQL protocol used
- */
- function PMA_DBI_get_proto_info($link = null)
- {
- if (null === $link) {
- if (isset($GLOBALS['userlink'])) {
- $link = $GLOBALS['userlink'];
- } else {
- return false;
- }
- }
- return mysql_get_proto_info($link);
- }
- /**
- * returns a string that represents the client library version
- *
- * @return string MySQL client library version
- */
- function PMA_DBI_get_client_info()
- {
- return mysql_get_client_info();
- }
- /**
- * returns last error message or false if no errors occured
- *
- * @param resource $link mysql link
- * @return string|bool $error or false
- */
- function PMA_DBI_getError($link = null)
- {
- $GLOBALS['errno'] = 0;
- /* Treat false same as null because of controllink */
- if ($link === false) {
- $link = null;
- }
- if (null === $link && isset($GLOBALS['userlink'])) {
- $link =& $GLOBALS['userlink'];
- // Do not stop now. On the initial connection, we don't have a $link,
- // we don't have a $GLOBALS['userlink'], but we can catch the error code
- // } else {
- // return false;
- }
- if (null !== $link && false !== $link) {
- $error_number = mysql_errno($link);
- $error_message = mysql_error($link);
- } else {
- $error_number = mysql_errno();
- $error_message = mysql_error();
- }
- if (0 == $error_number) {
- return false;
- }
- // keep the error number for further check after the call to PMA_DBI_getError()
- $GLOBALS['errno'] = $error_number;
- return PMA_DBI_formatError($error_number, $error_message);
- }
- /**
- * returns the number of rows returned by last query
- *
- * @param resource $result
- * @return string|int
- */
- function PMA_DBI_num_rows($result)
- {
- if (!is_bool($result)) {
- return mysql_num_rows($result);
- } else {
- return 0;
- }
- }
- /**
- * returns last inserted auto_increment id for given $link or $GLOBALS['userlink']
- *
- * @param resource $link the mysql object
- * @return string|int
- */
- function PMA_DBI_insert_id($link = null)
- {
- if (empty($link)) {
- if (isset($GLOBALS['userlink'])) {
- $link = $GLOBALS['userlink'];
- } else {
- return false;
- }
- }
- // 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()
- //
- return PMA_DBI_fetch_value('SELECT LAST_INSERT_ID();', 0, 0, $link);
- }
- /**
- * returns the number of rows affected by last query
- *
- * @param resource $link the mysql object
- * @param bool $get_from_cache
- * @return string|int
- */
- function PMA_DBI_affected_rows($link = null, $get_from_cache = true)
- {
- if (empty($link)) {
- if (isset($GLOBALS['userlink'])) {
- $link = $GLOBALS['userlink'];
- } else {
- return false;
- }
- }
- if ($get_from_cache) {
- return $GLOBALS['cached_affected_rows'];
- } else {
- return mysql_affected_rows($link);
- }
- }
- /**
- * returns metainfo for fields in $result
- *
- * @todo add missing keys like in mysqli_query (decimals)
- * @param resource $result
- * @return array meta info for fields in $result
- */
- function PMA_DBI_get_fields_meta($result)
- {
- $fields = array();
- $num_fields = mysql_num_fields($result);
- for ($i = 0; $i < $num_fields; $i++) {
- $field = mysql_fetch_field($result, $i);
- $field->flags = mysql_field_flags($result, $i);
- $field->orgtable = mysql_field_table($result, $i);
- $field->orgname = mysql_field_name($result, $i);
- $fields[] = $field;
- }
- return $fields;
- }
- /**
- * return number of fields in given $result
- *
- * @param resource $result
- * @return int field count
- */
- function PMA_DBI_num_fields($result)
- {
- return mysql_num_fields($result);
- }
- /**
- * returns the length of the given field $i in $result
- *
- * @param resource $result
- * @param int $i field
- * @return int length of field
- */
- function PMA_DBI_field_len($result, $i)
- {
- return mysql_field_len($result, $i);
- }
- /**
- * returns name of $i. field in $result
- *
- * @param resource $result
- * @param int $i field
- * @return string name of $i. field in $result
- */
- function PMA_DBI_field_name($result, $i)
- {
- return mysql_field_name($result, $i);
- }
- /**
- * returns concatenated string of human readable field flags
- *
- * @param resource $result
- * @param int $i field
- * @return string field flags
- */
- function PMA_DBI_field_flags($result, $i)
- {
- return mysql_field_flags($result, $i);
- }
- ?>