phpmyadmin working

2 files changed, 858 insertions, 0 deletions

diff --git a/srcs/phpmyadmin/libraries/classes/Dbi/DbiExtension.php b/srcs/phpmyadmin/libraries/classes/Dbi/DbiExtension.php
new file mode 100644
index 0000000..8cfa9fc
--- /dev/null
+++ b/srcs/phpmyadmin/libraries/classes/Dbi/DbiExtension.php
@@ -0,0 +1,248 @@
+<?php
+/**
+ * Contract for every database extension supported by phpMyAdmin
+ *
+ * @package PhpMyAdmin-DBI
+ */
+declare(strict_types=1);
+
+namespace PhpMyAdmin\Dbi;
+
+/**
+ * Contract for every database extension supported by phpMyAdmin
+ *
+ * @package PhpMyAdmin-DBI
+ */
+interface DbiExtension
+{
+    /**
+     * connects to the database server
+     *
+     * @param string $user     user name
+     * @param string $password user password
+     * @param array  $server   host/port/socket/persistent
+     *
+     * @return mixed false on error or a connection object on success
+     */
+    public function connect(
+        $user,
+        $password,
+        array $server
+    );
+
+    /**
+     * selects given database
+     *
+     * @param string   $dbname database name to select
+     * @param resource $link   connection object
+     *
+     * @return boolean
+     */
+    public function selectDb($dbname, $link);
+
+    /**
+     * runs a query and returns the result
+     *
+     * @param string   $query   query to execute
+     * @param resource $link    connection object
+     * @param int      $options query options
+     *
+     * @return mixed result
+     */
+    public function realQuery($query, $link, $options);
+
+    /**
+     * Run the multi query and output the results
+     *
+     * @param resource $link  connection object
+     * @param string   $query multi query statement to execute
+     *
+     * @return array|bool
+     */
+    public function realMultiQuery($link, $query);
+
+    /**
+     * returns array of rows with associative and numeric keys from $result
+     *
+     * @param object $result result set identifier
+     *
+     * @return array
+     */
+    public function fetchArray($result);
+
+    /**
+     * returns array of rows with associative keys from $result
+     *
+     * @param object $result result set identifier
+     *
+     * @return array
+     */
+    public function fetchAssoc($result);
+
+    /**
+     * returns array of rows with numeric keys from $result
+     *
+     * @param object $result result set identifier
+     *
+     * @return array
+     */
+    public function fetchRow($result);
+
+    /**
+     * Adjusts the result pointer to an arbitrary row in the result
+     *
+     * @param object  $result database result
+     * @param integer $offset offset to seek
+     *
+     * @return bool true on success, false on failure
+     */
+    public function dataSeek($result, $offset);
+
+    /**
+     * Frees memory associated with the result
+     *
+     * @param object $result database result
+     *
+     * @return void
+     */
+    public function freeResult($result);
+
+    /**
+     * Check if there are any more query results from a multi query
+     *
+     * @param resource $link the connection object
+     *
+     * @return bool true or false
+     */
+    public function moreResults($link);
+
+    /**
+     * Prepare next result from multi_query
+     *
+     * @param resource $link the connection object
+     *
+     * @return bool true or false
+     */
+    public function nextResult($link);
+
+    /**
+     * Store the result returned from multi query
+     *
+     * @param resource $link mysql link
+     *
+     * @return mixed false when empty results / result set when not empty
+     */
+    public function storeResult($link);
+
+    /**
+     * Returns a string representing the type of connection used
+     *
+     * @param resource $link mysql link
+     *
+     * @return string type of connection used
+     */
+    public function getHostInfo($link);
+
+    /**
+     * Returns the version of the MySQL protocol used
+     *
+     * @param resource $link mysql link
+     *
+     * @return integer version of the MySQL protocol used
+     */
+    public function getProtoInfo($link);
+
+    /**
+     * returns a string that represents the client library version
+     *
+     * @param resource $link mysql link
+     *
+     * @return string MySQL client library version
+     */
+    public function getClientInfo($link);
+
+    /**
+     * returns last error message or false if no errors occurred
+     *
+     * @param resource $link connection link
+     *
+     * @return string|bool error or false
+     */
+    public function getError($link);
+
+    /**
+     * returns the number of rows returned by last query
+     *
+     * @param object $result result set identifier
+     *
+     * @return string|int
+     */
+    public function numRows($result);
+
+    /**
+     * returns the number of rows affected by last query
+     *
+     * @param resource $link the connection object
+     *
+     * @return int
+     */
+    public function affectedRows($link);
+
+    /**
+     * returns metainfo for fields in $result
+     *
+     * @param object $result result set identifier
+     *
+     * @return array meta info for fields in $result
+     */
+    public function getFieldsMeta($result);
+
+    /**
+     * return number of fields in given $result
+     *
+     * @param object $result result set identifier
+     *
+     * @return int field count
+     */
+    public function numFields($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, $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, $i);
+
+    /**
+     * returns concatenated string of human readable field flags
+     *
+     * @param object $result result set identifier
+     * @param int    $i      field
+     *
+     * @return string field flags
+     */
+    public function fieldFlags($result, $i);
+
+    /**
+     * returns properly escaped string for use in MySQL queries
+     *
+     * @param mixed  $link database link
+     * @param string $str  string to be escaped
+     *
+     * @return string a MySQL escaped string
+     */
+    public function escapeString($link, $str);
+}
diff --git a/srcs/phpmyadmin/libraries/classes/Dbi/DbiMysqli.php b/srcs/phpmyadmin/libraries/classes/Dbi/DbiMysqli.php
new file mode 100644
index 0000000..b187190
--- /dev/null
+++ b/srcs/phpmyadmin/libraries/classes/Dbi/DbiMysqli.php
@@ -0,0 +1,610 @@
+<?php
+/* vim: set expandtab sw=4 ts=4 sts=4: */
+/**
+ * Interface to the MySQL Improved extension (MySQLi)
+ *
+ * @package    PhpMyAdmin-DBI
+ * @subpackage MySQLi
+ */
+declare(strict_types=1);
+
+namespace PhpMyAdmin\Dbi;
+
+use mysqli;
+use mysqli_result;
+use PhpMyAdmin\DatabaseInterface;
+use stdClass;
+use function mysqli_init;
+
+/**
+ * Interface to the MySQL Improved extension (MySQLi)
+ *
+ * @package    PhpMyAdmin-DBI
+ * @subpackage MySQLi
+ */
+class DbiMysqli implements DbiExtension
+{
+    /**
+     * @var array
+     */
+    private static $pma_mysqli_flag_names = [
+        MYSQLI_NUM_FLAG => 'num',
+        MYSQLI_PART_KEY_FLAG => 'part_key',
+        MYSQLI_SET_FLAG => 'set',
+        MYSQLI_TIMESTAMP_FLAG => 'timestamp',
+        MYSQLI_AUTO_INCREMENT_FLAG => 'auto_increment',
+        MYSQLI_ENUM_FLAG => 'enum',
+        MYSQLI_ZEROFILL_FLAG => 'zerofill',
+        MYSQLI_UNSIGNED_FLAG => 'unsigned',
+        MYSQLI_BLOB_FLAG => 'blob',
+        MYSQLI_MULTIPLE_KEY_FLAG => 'multiple_key',
+        MYSQLI_UNIQUE_KEY_FLAG => 'unique_key',
+        MYSQLI_PRI_KEY_FLAG => 'primary_key',
+        MYSQLI_NOT_NULL_FLAG => 'not_null',
+    ];
+
+    /**
+     * connects to the database server
+     *
+     * @param string $user     mysql user name
+     * @param string $password mysql user password
+     * @param array  $server   host/port/socket/persistent
+     *
+     * @return mysqli|bool false on error or a mysqli object on success
+     */
+    public function connect($user, $password, array $server)
+    {
+        if ($server) {
+            $server['host'] = empty($server['host'])
+                ? 'localhost'
+                : $server['host'];
+        }
+
+        $mysqli = mysqli_init();
+
+        $client_flags = 0;
+
+        /* Optionally compress connection */
+        if ($server['compress'] && defined('MYSQLI_CLIENT_COMPRESS')) {
+            $client_flags |= MYSQLI_CLIENT_COMPRESS;
+        }
+
+        /* Optionally enable SSL */
+        if ($server['ssl']) {
+            $client_flags |= MYSQLI_CLIENT_SSL;
+            if (! empty($server['ssl_key']) ||
+                ! empty($server['ssl_cert']) ||
+                ! empty($server['ssl_ca']) ||
+                ! empty($server['ssl_ca_path']) ||
+                ! empty($server['ssl_ciphers'])
+            ) {
+                if (! isset($server['ssl_key']) || is_null($server['ssl_key'])) {
+                    $server['ssl_key'] = '';
+                }
+                if (! isset($server['ssl_cert']) || is_null($server['ssl_cert'])) {
+                    $server['ssl_cert'] = '';
+                }
+                if (! isset($server['ssl_ca']) || is_null($server['ssl_ca'])) {
+                    $server['ssl_ca'] = '';
+                }
+                if (! isset($server['ssl_ca_path']) || is_null($server['ssl_ca_path'])) {
+                    $server['ssl_ca_path'] = '';
+                }
+                if (! isset($server['ssl_ciphers']) || is_null($server['ssl_ciphers'])) {
+                    $server['ssl_ciphers'] = '';
+                }
+                $mysqli->ssl_set(
+                    $server['ssl_key'],
+                    $server['ssl_cert'],
+                    $server['ssl_ca'],
+                    $server['ssl_ca_path'],
+                    $server['ssl_ciphers']
+                );
+            }
+            /*
+             * disables SSL certificate validation on mysqlnd for MySQL 5.6 or later
+             * @link https://bugs.php.net/bug.php?id=68344
+             * @link https://github.com/phpmyadmin/phpmyadmin/pull/11838
+             */
+            if (! $server['ssl_verify']) {
+                $mysqli->options(
+                    MYSQLI_OPT_SSL_VERIFY_SERVER_CERT,
+                    $server['ssl_verify']
+                );
+                $client_flags |= MYSQLI_CLIENT_SSL_DONT_VERIFY_SERVER_CERT;
+            }
+        }
+
+        if ($GLOBALS['cfg']['PersistentConnections']) {
+            $host = 'p:' . $server['host'];
+        } else {
+            $host = $server['host'];
+        }
+
+        $return_value = $mysqli->real_connect(
+            $host,
+            $user,
+            $password,
+            '',
+            $server['port'],
+            (string) $server['socket'],
+            $client_flags
+        );
+
+        if ($return_value === false || $return_value === null) {
+            /*
+             * Switch to SSL if server asked us to do so, unfortunately
+             * there are more ways MySQL server can tell this:
+             *
+             * - MySQL 8.0 and newer should return error 3159
+             * - #2001 - SSL Connection is required. Please specify SSL options and retry.
+             * - #9002 - SSL connection is required. Please specify SSL options and retry.
+             */
+            $error_number = $mysqli->connect_errno;
+            $error_message = $mysqli->connect_error;
+            if (! $server['ssl'] && ($error_number == 3159 ||
+                (($error_number == 2001 || $error_number == 9002) && stripos($error_message, 'SSL Connection is required') !== false))
+            ) {
+                    trigger_error(
+                        __('SSL connection enforced by server, automatically enabling it.'),
+                        E_USER_WARNING
+                    );
+                    $server['ssl'] = true;
+                    return self::connect($user, $password, $server);
+            }
+            return false;
+        }
+
+        if (defined('PMA_ENABLE_LDI')) {
+            $mysqli->options(MYSQLI_OPT_LOCAL_INFILE, true);
+        } else {
+            $mysqli->options(MYSQLI_OPT_LOCAL_INFILE, false);
+        }
+
+        return $mysqli;
+    }
+
+    /**
+     * selects given database
+     *
+     * @param string $databaseName database name to select
+     * @param mysqli $mysqli       the mysqli object
+     *
+     * @return boolean
+     */
+    public function selectDb($databaseName, $mysqli)
+    {
+        return $mysqli->select_db($databaseName);
+    }
+
+    /**
+     * runs a query and returns the result
+     *
+     * @param string $query   query to execute
+     * @param mysqli $mysqli  mysqli object
+     * @param int    $options query options
+     *
+     * @return mysqli_result|bool
+     */
+    public function realQuery($query, $mysqli, $options)
+    {
+        if ($options == ($options | DatabaseInterface::QUERY_STORE)) {
+            $method = MYSQLI_STORE_RESULT;
+        } elseif ($options == ($options | DatabaseInterface::QUERY_UNBUFFERED)) {
+            $method = MYSQLI_USE_RESULT;
+        } else {
+            $method = 0;
+        }
+
+        return $mysqli->query($query, $method);
+    }
+
+    /**
+     * Run the multi query and output the results
+     *
+     * @param mysqli $mysqli mysqli object
+     * @param string $query  multi query statement to execute
+     *
+     * @return bool
+     */
+    public function realMultiQuery($mysqli, $query)
+    {
+        return $mysqli->multi_query($query);
+    }
+
+    /**
+     * returns array of rows with associative and numeric keys from $result
+     *
+     * @param mysqli_result $result result set identifier
+     *
+     * @return array|null
+     */
+    public function fetchArray($result)
+    {
+        if (! $result instanceof mysqli_result) {
+            return null;
+        }
+        return $result->fetch_array(MYSQLI_BOTH);
+    }
+
+    /**
+     * returns array of rows with associative keys from $result
+     *
+     * @param mysqli_result $result result set identifier
+     *
+     * @return array|null
+     */
+    public function fetchAssoc($result)
+    {
+        if (! $result instanceof mysqli_result) {
+            return null;
+        }
+        return $result->fetch_array(MYSQLI_ASSOC);
+    }
+
+    /**
+     * returns array of rows with numeric keys from $result
+     *
+     * @param mysqli_result $result result set identifier
+     *
+     * @return array|null
+     */
+    public function fetchRow($result)
+    {
+        if (! $result instanceof mysqli_result) {
+            return null;
+        }
+        return $result->fetch_array(MYSQLI_NUM);
+    }
+
+    /**
+     * Adjusts the result pointer to an arbitrary row in the result
+     *
+     * @param mysqli_result $result database result
+     * @param integer       $offset offset to seek
+     *
+     * @return bool true on success, false on failure
+     */
+    public function dataSeek($result, $offset)
+    {
+        return $result->data_seek($offset);
+    }
+
+    /**
+     * Frees memory associated with the result
+     *
+     * @param mysqli_result $result database result
+     *
+     * @return void
+     */
+    public function freeResult($result)
+    {
+        if ($result instanceof mysqli_result) {
+            $result->close();
+        }
+    }
+
+    /**
+     * Check if there are any more query results from a multi query
+     *
+     * @param mysqli $mysqli the mysqli object
+     *
+     * @return bool true or false
+     */
+    public function moreResults($mysqli)
+    {
+        return $mysqli->more_results();
+    }
+
+    /**
+     * Prepare next result from multi_query
+     *
+     * @param mysqli $mysqli the mysqli object
+     *
+     * @return bool true or false
+     */
+    public function nextResult($mysqli)
+    {
+        return $mysqli->next_result();
+    }
+
+    /**
+     * Store the result returned from multi query
+     *
+     * @param mysqli $mysqli the mysqli object
+     *
+     * @return mysqli_result|bool false when empty results / result set when not empty
+     */
+    public function storeResult($mysqli)
+    {
+        return $mysqli->store_result();
+    }
+
+    /**
+     * Returns a string representing the type of connection used
+     *
+     * @param mysqli $mysqli mysql link
+     *
+     * @return string type of connection used
+     */
+    public function getHostInfo($mysqli)
+    {
+        return $mysqli->host_info;
+    }
+
+    /**
+     * Returns the version of the MySQL protocol used
+     *
+     * @param mysqli $mysqli mysql link
+     *
+     * @return string version of the MySQL protocol used
+     */
+    public function getProtoInfo($mysqli)
+    {
+        return $mysqli->protocol_version;
+    }
+
+    /**
+     * returns a string that represents the client library version
+     *
+     * @param mysqli $mysqli mysql link
+     *
+     * @return string MySQL client library version
+     */
+    public function getClientInfo($mysqli)
+    {
+        return $mysqli->get_client_info();
+    }
+
+    /**
+     * returns last error message or false if no errors occurred
+     *
+     * @param mysqli $mysqli mysql link
+     *
+     * @return string|bool error or false
+     */
+    public function getError($mysqli)
+    {
+        $GLOBALS['errno'] = 0;
+
+        if (null !== $mysqli && false !== $mysqli) {
+            $error_number = $mysqli->errno;
+            $error_message = $mysqli->error;
+        } else {
+            $error_number = $mysqli->connect_errno;
+            $error_message = $mysqli->connect_error;
+        }
+        if (0 == $error_number) {
+            return false;
+        }
+
+        // keep the error number for further check after
+        // the call to getError()
+        $GLOBALS['errno'] = $error_number;
+
+        return $GLOBALS['dbi']->formatError($error_number, $error_message);
+    }
+
+    /**
+     * returns the number of rows returned by last query
+     *
+     * @param mysqli_result $result result set identifier
+     *
+     * @return string|int
+     */
+    public function numRows($result)
+    {
+        // see the note for tryQuery();
+        if (is_bool($result)) {
+            return 0;
+        }
+
+        return $result->num_rows;
+    }
+
+    /**
+     * returns the number of rows affected by last query
+     *
+     * @param mysqli $mysqli the mysqli object
+     *
+     * @return int
+     */
+    public function affectedRows($mysqli)
+    {
+        return $mysqli->affected_rows;
+    }
+
+    /**
+     * returns meta info for fields in $result
+     *
+     * @param mysqli_result $result result set identifier
+     *
+     * @return array|bool meta info for fields in $result
+     */
+    public function getFieldsMeta($result)
+    {
+        if (! $result instanceof mysqli_result) {
+            return false;
+        }
+        // Build an associative array for a type look up
+        $typeAr = [];
+        $typeAr[MYSQLI_TYPE_DECIMAL]     = 'real';
+        $typeAr[MYSQLI_TYPE_NEWDECIMAL]  = 'real';
+        $typeAr[MYSQLI_TYPE_BIT]         = 'int';
+        $typeAr[MYSQLI_TYPE_TINY]        = 'int';
+        $typeAr[MYSQLI_TYPE_SHORT]       = 'int';
+        $typeAr[MYSQLI_TYPE_LONG]        = 'int';
+        $typeAr[MYSQLI_TYPE_FLOAT]       = 'real';
+        $typeAr[MYSQLI_TYPE_DOUBLE]      = 'real';
+        $typeAr[MYSQLI_TYPE_NULL]        = 'null';
+        $typeAr[MYSQLI_TYPE_TIMESTAMP]   = 'timestamp';
+        $typeAr[MYSQLI_TYPE_LONGLONG]    = 'int';
+        $typeAr[MYSQLI_TYPE_INT24]       = 'int';
+        $typeAr[MYSQLI_TYPE_DATE]        = 'date';
+        $typeAr[MYSQLI_TYPE_TIME]        = 'time';
+        $typeAr[MYSQLI_TYPE_DATETIME]    = 'datetime';
+        $typeAr[MYSQLI_TYPE_YEAR]        = 'year';
+        $typeAr[MYSQLI_TYPE_NEWDATE]     = 'date';
+        $typeAr[MYSQLI_TYPE_ENUM]        = 'unknown';
+        $typeAr[MYSQLI_TYPE_SET]         = 'unknown';
+        $typeAr[MYSQLI_TYPE_TINY_BLOB]   = 'blob';
+        $typeAr[MYSQLI_TYPE_MEDIUM_BLOB] = 'blob';
+        $typeAr[MYSQLI_TYPE_LONG_BLOB]   = 'blob';
+        $typeAr[MYSQLI_TYPE_BLOB]        = 'blob';
+        $typeAr[MYSQLI_TYPE_VAR_STRING]  = 'string';
+        $typeAr[MYSQLI_TYPE_STRING]      = 'string';
+        // MySQL returns MYSQLI_TYPE_STRING for CHAR
+        // and MYSQLI_TYPE_CHAR === MYSQLI_TYPE_TINY
+        // so this would override TINYINT and mark all TINYINT as string
+        // see https://github.com/phpmyadmin/phpmyadmin/issues/8569
+        //$typeAr[MYSQLI_TYPE_CHAR]        = 'string';
+        $typeAr[MYSQLI_TYPE_GEOMETRY]    = 'geometry';
+        $typeAr[MYSQLI_TYPE_BIT]         = 'bit';
+        $typeAr[MYSQLI_TYPE_JSON]        = 'json';
+
+        $fields = $result->fetch_fields();
+
+        if (! is_array($fields)) {
+            return false;
+        }
+
+        foreach ($fields as $k => $field) {
+            $fields[$k]->_type = $field->type;
+            $fields[$k]->type = $typeAr[$field->type];
+            $fields[$k]->_flags = $field->flags;
+            $fields[$k]->flags = $this->fieldFlags($result, $k);
+
+            // Enhance the field objects for mysql-extension compatibility
+            //$flags = explode(' ', $fields[$k]->flags);
+            //array_unshift($flags, 'dummy');
+            $fields[$k]->multiple_key
+                = (int) (bool) ($fields[$k]->_flags & MYSQLI_MULTIPLE_KEY_FLAG);
+            $fields[$k]->primary_key
+                = (int) (bool) ($fields[$k]->_flags & MYSQLI_PRI_KEY_FLAG);
+            $fields[$k]->unique_key
+                = (int) (bool) ($fields[$k]->_flags & MYSQLI_UNIQUE_KEY_FLAG);
+            $fields[$k]->not_null
+                = (int) (bool) ($fields[$k]->_flags & MYSQLI_NOT_NULL_FLAG);
+            $fields[$k]->unsigned
+                = (int) (bool) ($fields[$k]->_flags & MYSQLI_UNSIGNED_FLAG);
+            $fields[$k]->zerofill
+                = (int) (bool) ($fields[$k]->_flags & MYSQLI_ZEROFILL_FLAG);
+            $fields[$k]->numeric
+                = (int) (bool) ($fields[$k]->_flags & MYSQLI_NUM_FLAG);
+            $fields[$k]->blob
+                = (int) (bool) ($fields[$k]->_flags & MYSQLI_BLOB_FLAG);
+        }
+        return $fields;
+    }
+
+    /**
+     * return number of fields in given $result
+     *
+     * @param mysqli_result $result result set identifier
+     *
+     * @return int field count
+     */
+    public function numFields($result)
+    {
+        return $result->field_count;
+    }
+
+    /**
+     * returns the length of the given field $i in $result
+     *
+     * @param mysqli_result $result result set identifier
+     * @param int           $i      field
+     *
+     * @return int|bool length of field
+     */
+    public function fieldLen($result, $i)
+    {
+        if ($i >= $this->numFields($result)) {
+            return false;
+        }
+        /** @var stdClass $fieldDefinition */
+        $fieldDefinition = $result->fetch_field_direct($i);
+        if ($fieldDefinition !== false) {
+            return $fieldDefinition->length;
+        }
+        return false;
+    }
+
+    /**
+     * returns name of $i. field in $result
+     *
+     * @param mysqli_result $result result set identifier
+     * @param int           $i      field
+     *
+     * @return string|bool name of $i. field in $result
+     */
+    public function fieldName($result, $i)
+    {
+        if ($i >= $this->numFields($result)) {
+            return false;
+        }
+        /** @var stdClass $fieldDefinition */
+        $fieldDefinition = $result->fetch_field_direct($i);
+        if ($fieldDefinition !== false) {
+            return $fieldDefinition->name;
+        }
+        return false;
+    }
+
+    /**
+     * returns concatenated string of human readable field flags
+     *
+     * @param mysqli_result $result result set identifier
+     * @param int           $i      field
+     *
+     * @return string|false field flags
+     */
+    public function fieldFlags($result, $i)
+    {
+        if ($i >= $this->numFields($result)) {
+            return false;
+        }
+        /** @var stdClass $fieldDefinition */
+        $fieldDefinition = $result->fetch_field_direct($i);
+        if ($fieldDefinition !== false) {
+            $type = $fieldDefinition->type;
+            $charsetNumber = $fieldDefinition->charsetnr;
+            $fieldDefinitionFlags = $fieldDefinition->flags;
+            $flags = [];
+            foreach (self::$pma_mysqli_flag_names as $flag => $name) {
+                if ($fieldDefinitionFlags & $flag) {
+                    $flags[] = $name;
+                }
+            }
+            // See https://dev.mysql.com/doc/refman/6.0/en/c-api-datatypes.html:
+            // to determine if a string is binary, we should not use MYSQLI_BINARY_FLAG
+            // but instead the charsetnr member of the MYSQL_FIELD
+            // structure. Watch out: some types like DATE returns 63 in charsetnr
+            // so we have to check also the type.
+            // Unfortunately there is no equivalent in the mysql extension.
+            if (($type == MYSQLI_TYPE_TINY_BLOB || $type == MYSQLI_TYPE_BLOB
+                || $type == MYSQLI_TYPE_MEDIUM_BLOB || $type == MYSQLI_TYPE_LONG_BLOB
+                || $type == MYSQLI_TYPE_VAR_STRING || $type == MYSQLI_TYPE_STRING)
+                && 63 == $charsetNumber
+            ) {
+                $flags[] = 'binary';
+            }
+            return implode(' ', $flags);
+        } else {
+            return '';
+        }
+    }
+
+    /**
+     * returns properly escaped string for use in MySQL queries
+     *
+     * @param mysqli $mysqli database link
+     * @param string $string string to be escaped
+     *
+     * @return string a MySQL escaped string
+     */
+    public function escapeString($mysqli, $string)
+    {
+        return $mysqli->real_escape_string($string);
+    }
+}