'
- . '' . "\n";
- return $html;
-}
-
-/**
- * Computes the memory limit for export
- *
- * @return int $memory_limit the memory limit
- */
-function PMA_getMemoryLimitForExport()
-{
- $memory_limit = trim(@ini_get('memory_limit'));
- $memory_limit_num = (int)substr($memory_limit, 0, -1);
- $lowerLastChar = strtolower(substr($memory_limit, -1));
- // 2 MB as default
- if (empty($memory_limit) || '-1' == $memory_limit) {
- $memory_limit = 2 * 1024 * 1024;
- } elseif ($lowerLastChar == 'm') {
- $memory_limit = $memory_limit_num * 1024 * 1024;
- } elseif ($lowerLastChar == 'k') {
- $memory_limit = $memory_limit_num * 1024;
- } elseif ($lowerLastChar == 'g') {
- $memory_limit = $memory_limit_num * 1024 * 1024 * 1024;
- } else {
- $memory_limit = (int)$memory_limit;
- }
-
- // Some of memory is needed for other things and as threshold.
- // During export I had allocated (see memory_get_usage function)
- // approx 1.2MB so this comes from that.
- if ($memory_limit > 1500000) {
- $memory_limit -= 1500000;
- }
-
- // Some memory is needed for compression, assume 1/3
- $memory_limit /= 8;
- return $memory_limit;
-}
-
-/**
- * Return the filename and MIME type for export file
- *
- * @param string $export_type type of export
- * @param string $remember_template whether to remember template
- * @param ExportPlugin $export_plugin the export plugin
- * @param string $compression compression asked
- * @param string $filename_template the filename template
- *
- * @return string[] the filename template and mime type
- */
-function PMA_getExportFilenameAndMimetype(
- $export_type, $remember_template, $export_plugin, $compression,
- $filename_template
-) {
- if ($export_type == 'server') {
- if (! empty($remember_template)) {
- $GLOBALS['PMA_Config']->setUserValue(
- 'pma_server_filename_template',
- 'Export/file_template_server',
- $filename_template
- );
- }
- } elseif ($export_type == 'database') {
- if (! empty($remember_template)) {
- $GLOBALS['PMA_Config']->setUserValue(
- 'pma_db_filename_template',
- 'Export/file_template_database',
- $filename_template
- );
- }
- } else {
- if (! empty($remember_template)) {
- $GLOBALS['PMA_Config']->setUserValue(
- 'pma_table_filename_template',
- 'Export/file_template_table',
- $filename_template
- );
- }
- }
- $filename = PhpMyAdmin\Util::expandUserString($filename_template);
- // remove dots in filename (coming from either the template or already
- // part of the filename) to avoid a remote code execution vulnerability
- $filename = Sanitize::sanitizeFilename($filename, $replaceDots = true);
-
- // Grab basic dump extension and mime type
- // Check if the user already added extension;
- // get the substring where the extension would be if it was included
- $extension_start_pos = mb_strlen($filename) - mb_strlen(
- $export_plugin->getProperties()->getExtension()
- ) - 1;
- $user_extension = mb_substr(
- $filename, $extension_start_pos, mb_strlen($filename)
- );
- $required_extension = "." . $export_plugin->getProperties()->getExtension();
- if (mb_strtolower($user_extension) != $required_extension) {
- $filename .= $required_extension;
- }
- $mime_type = $export_plugin->getProperties()->getMimeType();
-
- // If dump is going to be compressed, set correct mime_type and add
- // compression to extension
- if ($compression == 'gzip') {
- $filename .= '.gz';
- $mime_type = 'application/x-gzip';
- } elseif ($compression == 'zip') {
- $filename .= '.zip';
- $mime_type = 'application/zip';
- }
- return array($filename, $mime_type);
-}
-
-/**
- * Open the export file
- *
- * @param string $filename the export filename
- * @param boolean $quick_export whether it's a quick export or not
- *
- * @return array the full save filename, possible message and the file handle
- */
-function PMA_openExportFile($filename, $quick_export)
-{
- $file_handle = null;
- $message = '';
-
- $save_filename = PhpMyAdmin\Util::userDir($GLOBALS['cfg']['SaveDir'])
- . preg_replace('@[/\\\\]@', '_', $filename);
-
- if (@file_exists($save_filename)
- && ((! $quick_export && empty($_REQUEST['onserver_overwrite']))
- || ($quick_export
- && $_REQUEST['quick_export_onserver_overwrite'] != 'saveitover'))
- ) {
- $message = Message::error(
- __(
- 'File %s already exists on server, '
- . 'change filename or check overwrite option.'
- )
- );
- $message->addParam($save_filename);
- } elseif (@is_file($save_filename) && ! @is_writable($save_filename)) {
- $message = Message::error(
- __(
- 'The web server does not have permission '
- . 'to save the file %s.'
- )
- );
- $message->addParam($save_filename);
- } elseif (! $file_handle = @fopen($save_filename, 'w')) {
- $message = Message::error(
- __(
- 'The web server does not have permission '
- . 'to save the file %s.'
- )
- );
- $message->addParam($save_filename);
- }
- return array($save_filename, $message, $file_handle);
-}
-
-/**
- * Close the export file
- *
- * @param resource $file_handle the export file handle
- * @param string $dump_buffer the current dump buffer
- * @param string $save_filename the export filename
- *
- * @return Message $message a message object (or empty string)
- */
-function PMA_closeExportFile($file_handle, $dump_buffer, $save_filename)
-{
- $write_result = @fwrite($file_handle, $dump_buffer);
- fclose($file_handle);
- // Here, use strlen rather than mb_strlen to get the length
- // in bytes to compare against the number of bytes written.
- if (strlen($dump_buffer) > 0
- && (! $write_result || $write_result != strlen($dump_buffer))
- ) {
- $message = new Message(
- __('Insufficient space to save the file %s.'),
- Message::ERROR,
- array($save_filename)
- );
- } else {
- $message = new Message(
- __('Dump has been saved to file %s.'),
- Message::SUCCESS,
- array($save_filename)
- );
- }
- return $message;
-}
-
-/**
- * Compress the export buffer
- *
- * @param array|string $dump_buffer the current dump buffer
- * @param string $compression the compression mode
- * @param string $filename the filename
- *
- * @return object $message a message object (or empty string)
- */
-function PMA_compressExport($dump_buffer, $compression, $filename)
-{
- if ($compression == 'zip' && @function_exists('gzcompress')) {
- $filename = substr($filename, 0, -4); // remove extension (.zip)
- $dump_buffer = ZipExtension::createFile($dump_buffer, $filename);
- } elseif ($compression == 'gzip' && PMA_gzencodeNeeded()) {
- // without the optional parameter level because it bugs
- $dump_buffer = gzencode($dump_buffer);
- }
- return $dump_buffer;
-}
-
-/**
- * Saves the dump_buffer for a particular table in an array
- * Used in separate files export
- *
- * @param string $object_name the name of current object to be stored
- * @param boolean $append optional boolean to append to an existing index or not
- *
- * @return void
- */
-function PMA_saveObjectInBuffer($object_name, $append = false)
-{
-
- global $dump_buffer_objects, $dump_buffer, $dump_buffer_len;
-
- if (! empty($dump_buffer)) {
- if ($append && isset($dump_buffer_objects[$object_name])) {
- $dump_buffer_objects[$object_name] .= $dump_buffer;
- } else {
- $dump_buffer_objects[$object_name] = $dump_buffer;
- }
- }
-
- // Re - initialize
- $dump_buffer = '';
- $dump_buffer_len = 0;
-
-}
-
-/**
- * Returns HTML containing the header for a displayed export
- *
- * @param string $export_type the export type
- * @param string $db the database name
- * @param string $table the table name
- *
- * @return string[] the generated HTML and back button
- */
-function PMA_getHtmlForDisplayedExportHeader($export_type, $db, $table)
-{
- $html = '