Files
phpmyadmin/export.php
Michal Čihař 94c2f864ae [core] Remove config data from session as it brings chicken-egg problem.
Configuration data stores PmaAbsoluteUri, which should be accessible
before initiating session. Otherwise there is no way to make
PmaAbsoluteUri work. PmaAbsoluteUri is needed at least for reverse
proxy setups, for example http webserver running behind https proxy.
2010-01-21 11:18:18 +00:00

683 lines
24 KiB
PHP

<?php
/* vim: set expandtab sw=4 ts=4 sts=4: */
/**
* @todo too much die here, or?
* @version $Id$
* @package phpMyAdmin
*/
/**
* Get the variables sent or posted to this script and a core script
*/
require_once './libraries/common.inc.php';
require_once './libraries/zip.lib.php';
require_once './libraries/plugin_interface.lib.php';
PMA_checkParameters(array('what', 'export_type'));
// Scan plugins
$export_list = PMA_getPlugins('./libraries/export/', array('export_type' => $export_type, 'single_table' => isset($single_table)));
// Backward compatbility
$type = $what;
// Check export type
if (!isset($export_list[$type])) {
die('Bad type!');
}
/**
* valid compression methods
*/
$compression_methods = array(
'zip',
'gzip',
'bzip',
);
/**
* init and variable checking
*/
$compression = false;
$onserver = false;
$save_on_server = false;
$buffer_needed = false;
if (empty($_REQUEST['asfile'])) {
$asfile = false;
} else {
$asfile = true;
if (in_array($_REQUEST['compression'], $compression_methods)) {
$compression = $_REQUEST['compression'];
$buffer_needed = true;
}
if (!empty($_REQUEST['onserver'])) {
$onserver = $_REQUEST['onserver'];
// Will we save dump on server?
$save_on_server = ! empty($cfg['SaveDir']) && $onserver;
}
}
// Does export require to be into file?
if (isset($export_list[$type]['force_file']) && ! $asfile) {
$message = PMA_Message::error('strExportMustBeFile');
$GLOBALS['js_include'][] = 'functions.js';
require_once './libraries/header.inc.php';
if ($export_type == 'server') {
$active_page = 'server_export.php';
require './server_export.php';
} elseif ($export_type == 'database') {
$active_page = 'db_export.php';
require './db_export.php';
} else {
$active_page = 'tbl_export.php';
require './tbl_export.php';
}
exit();
}
// Generate error url and check for needed variables
if ($export_type == 'server') {
$err_url = 'server_export.php?' . PMA_generate_common_url();
} elseif ($export_type == 'database' && strlen($db)) {
$err_url = 'db_export.php?' . PMA_generate_common_url($db);
// Check if we have something to export
if (isset($table_select)) {
$tables = $table_select;
} else {
$tables = array();
}
} elseif ($export_type == 'table' && strlen($db) && strlen($table)) {
$err_url = 'tbl_export.php?' . PMA_generate_common_url($db, $table);
} else {
die('Bad parameters!');
}
// Get the functions specific to the export type
require './libraries/export/' . PMA_securePath($type) . '.php';
/**
* Increase time limit for script execution and initializes some variables
*/
@set_time_limit($cfg['ExecTimeLimit']);
if (!empty($cfg['MemoryLimit'])) {
@ini_set('memory_limit', $cfg['MemoryLimit']);
}
// Start with empty buffer
$dump_buffer = '';
$dump_buffer_len = 0;
// We send fake headers to avoid browser timeout when buffering
$time_start = time();
/**
* Output handler for all exports, if needed buffering, it stores data into
* $dump_buffer, otherwise it prints thems out.
*
* @param string the insert statement
*
* @return bool Whether output suceeded
*/
function PMA_exportOutputHandler($line)
{
global $time_start, $dump_buffer, $dump_buffer_len, $save_filename;
// Kanji encoding convert feature
if ($GLOBALS['output_kanji_conversion']) {
$line = PMA_kanji_str_conv($line, $GLOBALS['knjenc'], isset($GLOBALS['xkana']) ? $GLOBALS['xkana'] : '');
}
// If we have to buffer data, we will perform everything at once at the end
if ($GLOBALS['buffer_needed']) {
$dump_buffer .= $line;
if ($GLOBALS['onfly_compression']) {
$dump_buffer_len += strlen($line);
if ($dump_buffer_len > $GLOBALS['memory_limit']) {
if ($GLOBALS['output_charset_conversion']) {
$dump_buffer = PMA_convert_string($GLOBALS['charset'], $GLOBALS['charset_of_file'], $dump_buffer);
}
// as bzipped
if ($GLOBALS['compression'] == 'bzip' && @function_exists('bzcompress')) {
$dump_buffer = bzcompress($dump_buffer);
}
// as a gzipped file
elseif ($GLOBALS['compression'] == 'gzip' && @function_exists('gzencode')) {
// without the optional parameter level because it bug
$dump_buffer = gzencode($dump_buffer);
}
if ($GLOBALS['save_on_server']) {
$write_result = @fwrite($GLOBALS['file_handle'], $dump_buffer);
if (!$write_result || ($write_result != strlen($dump_buffer))) {
$GLOBALS['message'] = PMA_Message::error('strNoSpace');
$GLOBALS['message']->addParam($save_filename);
return false;
}
} else {
echo $dump_buffer;
}
$dump_buffer = '';
$dump_buffer_len = 0;
}
} else {
$time_now = time();
if ($time_start >= $time_now + 30) {
$time_start = $time_now;
header('X-pmaPing: Pong');
} // end if
}
} else {
if ($GLOBALS['asfile']) {
if ($GLOBALS['output_charset_conversion']) {
$line = PMA_convert_string($GLOBALS['charset'], $GLOBALS['charset_of_file'], $line);
}
if ($GLOBALS['save_on_server'] && strlen($line) > 0) {
$write_result = @fwrite($GLOBALS['file_handle'], $line);
if (!$write_result || ($write_result != strlen($line))) {
$GLOBALS['message'] = PMA_Message::error('strNoSpace');
$GLOBALS['message']->addParam($save_filename);
return false;
}
$time_now = time();
if ($time_start >= $time_now + 30) {
$time_start = $time_now;
header('X-pmaPing: Pong');
} // end if
} else {
// We export as file - output normally
echo $line;
}
} else {
// We export as html - replace special chars
echo htmlspecialchars($line);
}
}
return true;
} // end of the 'PMA_exportOutputHandler()' function
// Defines the default <CR><LF> format. For SQL always use \n as MySQL wants this on all platforms.
if ($what == 'sql') {
$crlf = "\n";
} else {
$crlf = PMA_whichCrlf();
}
$output_kanji_conversion = function_exists('PMA_kanji_str_conv') && $type != 'xls';
// Do we need to convert charset?
$output_charset_conversion = $asfile && $cfg['AllowAnywhereRecoding']
&& isset($charset_of_file) && $charset_of_file != $charset
&& $type != 'xls';
// Use on the fly compression?
$onfly_compression = $GLOBALS['cfg']['CompressOnFly'] && ($compression == 'gzip' || $compression == 'bzip');
if ($onfly_compression) {
$memory_limit = trim(@ini_get('memory_limit'));
// 2 MB as default
if (empty($memory_limit)) {
$memory_limit = 2 * 1024 * 1024;
}
if (strtolower(substr($memory_limit, -1)) == 'm') {
$memory_limit = (int)substr($memory_limit, 0, -1) * 1024 * 1024;
} elseif (strtolower(substr($memory_limit, -1)) == 'k') {
$memory_limit = (int)substr($memory_limit, 0, -1) * 1024;
} elseif (strtolower(substr($memory_limit, -1)) == 'g') {
$memory_limit = (int)substr($memory_limit, 0, -1) * 1024 * 1024 * 1024;
} else {
$memory_limit = (int)$memory_limit;
}
// Some of memory is needed for other thins and as treshold.
// Nijel: 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
$memory_limit /= 8;
}
// Generate filename and mime type if needed
if ($asfile) {
$pma_uri_parts = parse_url($cfg['PmaAbsoluteUri']);
if ($export_type == 'server') {
if (isset($remember_template)) {
$GLOBALS['PMA_Config']->setCookie('pma_server_filename_template', $filename_template);
}
$filename = str_replace('__SERVER__', $GLOBALS['cfg']['Server']['host'], strftime($filename_template));
} elseif ($export_type == 'database') {
if (isset($remember_template)) {
$GLOBALS['PMA_Config']->setCookie('pma_db_filename_template', $filename_template);
}
$filename = str_replace('__DB__', $db, str_replace('__SERVER__', $GLOBALS['cfg']['Server']['host'], strftime($filename_template)));
} else {
if (isset($remember_template)) {
$GLOBALS['PMA_Config']->setCookie('pma_table_filename_template', $filename_template);
}
$filename = str_replace('__TABLE__', $table, str_replace('__DB__', $db, str_replace('__SERVER__', $GLOBALS['cfg']['Server']['host'], strftime($filename_template))));
}
// convert filename to iso-8859-1, it is safer
if (!(isset($cfg['AllowAnywhereRecoding']) && $cfg['AllowAnywhereRecoding'] )) {
$filename = PMA_convert_string($charset, 'iso-8859-1', $filename);
} else {
$filename = PMA_convert_string($convcharset, 'iso-8859-1', $filename);
}
// Grab basic dump extension and mime type
$filename .= '.' . $export_list[$type]['extension'];
$mime_type = $export_list[$type]['mime_type'];
// If dump is going to be compressed, set correct mime_type and add
// compression to extension
if ($compression == 'bzip') {
$filename .= '.bz2';
$mime_type = 'application/x-bzip2';
} elseif ($compression == 'gzip') {
$filename .= '.gz';
$mime_type = 'application/x-gzip';
} elseif ($compression == 'zip') {
$filename .= '.zip';
$mime_type = 'application/zip';
}
}
// Open file on server if needed
if ($save_on_server) {
$save_filename = PMA_userDir($cfg['SaveDir']) . preg_replace('@[/\\\\]@', '_', $filename);
unset($message);
if (file_exists($save_filename) && empty($onserverover)) {
$message = PMA_Message::error('strFileAlreadyExists');
$message->addParam($save_filename);
} else {
if (is_file($save_filename) && !is_writable($save_filename)) {
$message = PMA_Message::error('strNoPermission');
$message->addParam($save_filename);
} else {
if (!$file_handle = @fopen($save_filename, 'w')) {
$message = PMA_Message::error('strNoPermission');
$message->addParam($save_filename);
}
}
}
if (isset($message)) {
$GLOBALS['js_include'][] = 'functions.js';
require_once './libraries/header.inc.php';
if ($export_type == 'server') {
$active_page = 'server_export.php';
require './server_export.php';
} elseif ($export_type == 'database') {
$active_page = 'db_export.php';
require './db_export.php';
} else {
$active_page = 'tbl_export.php';
require './tbl_export.php';
}
exit();
}
}
/**
* Send headers depending on whether the user chose to download a dump file
* or not
*/
if (!$save_on_server) {
if ($asfile) {
// Download
// (avoid rewriting data containing HTML with anchors and forms;
// this was reported to happen under Plesk)
@ini_set('url_rewriter.tags','');
header('Content-Type: ' . $mime_type);
header('Expires: ' . gmdate('D, d M Y H:i:s') . ' GMT');
// lem9: Tested behavior of
// IE 5.50.4807.2300
// IE 6.0.2800.1106 (small glitch, asks twice when I click Open)
// IE 6.0.2900.2180
// Firefox 1.0.6
// in http and https
header('Content-Disposition: attachment; filename="' . $filename . '"');
if (PMA_USR_BROWSER_AGENT == 'IE') {
header('Cache-Control: must-revalidate, post-check=0, pre-check=0');
header('Pragma: public');
} else {
header('Pragma: no-cache');
// test case: exporting a database into a .gz file with Safari
// would produce files not having the current time
// (added this header for Safari but should not harm other browsers)
header('Last-Modified: ' . gmdate('D, d M Y H:i:s') . ' GMT');
}
} else {
// HTML
if ($export_type == 'database') {
$num_tables = count($tables);
if ($num_tables == 0) {
$message = PMA_Message::error('strNoTablesFound');
$GLOBALS['js_include'][] = 'functions.js';
require_once './libraries/header.inc.php';
$active_page = 'db_export.php';
require './db_export.php';
exit();
}
}
$backup_cfgServer = $cfg['Server'];
require_once './libraries/header.inc.php';
$cfg['Server'] = $backup_cfgServer;
unset($backup_cfgServer);
echo "\n" . '<div align="' . $cell_align_left . '">' . "\n";
//echo ' <pre>' . "\n";
echo ' <form name="nofunction">' . "\n"
// remove auto-select for now: there is no way to select
// only a part of the text; anyway, it should obey
// $cfg['TextareaAutoSelect']
//. ' <textarea name="sqldump" cols="50" rows="30" onclick="this.select();" id="textSQLDUMP" wrap="OFF">' . "\n";
. ' <textarea name="sqldump" cols="50" rows="30" id="textSQLDUMP" wrap="OFF">' . "\n";
} // end download
}
// Fake loop just to allow skip of remain of this code by break, I'd really
// need exceptions here :-)
do {
// Add possibly some comments to export
if (!PMA_exportHeader()) {
break;
}
// Will we need relation & co. setup?
$do_relation = isset($GLOBALS[$what . '_relation']);
$do_comments = isset($GLOBALS[$what . '_comments']);
$do_mime = isset($GLOBALS[$what . '_mime']);
if ($do_relation || $do_comments || $do_mime) {
require_once './libraries/relation.lib.php';
$cfgRelation = PMA_getRelationsParam();
}
if ($do_mime) {
require_once './libraries/transformations.lib.php';
}
// Include dates in export?
$do_dates = isset($GLOBALS[$what . '_dates']);
/**
* Builds the dump
*/
// Gets the number of tables if a dump of a database has been required
if ($export_type == 'server') {
if (isset($db_select)) {
$tmp_select = implode($db_select, '|');
$tmp_select = '|' . $tmp_select . '|';
}
// Walk over databases
foreach ($GLOBALS['pma']->databases as $current_db) {
if ((isset($tmp_select) && strpos(' ' . $tmp_select, '|' . $current_db . '|'))
|| !isset($tmp_select)) {
if (!PMA_exportDBHeader($current_db)) {
break 2;
}
if (!PMA_exportDBCreate($current_db)) {
break 2;
}
$tables = PMA_DBI_get_tables($current_db);
$views = array();
foreach ($tables as $table) {
// if this is a view, collect it for later; views must be exported
// after the tables
$is_view = PMA_Table::isView($current_db, $table);
if ($is_view) {
$views[] = $table;
}
if (isset($GLOBALS[$what . '_structure'])) {
// for a view, export a stand-in definition of the table
// to resolve view dependencies
if (!PMA_exportStructure($current_db, $table, $crlf, $err_url, $do_relation, $do_comments, $do_mime, $do_dates, $is_view ? 'stand_in' : 'create_table', $export_type)) {
break 3;
}
}
if (isset($GLOBALS[$what . '_data']) && ! $is_view) {
$local_query = 'SELECT * FROM ' . PMA_backquote($current_db) . '.' . PMA_backquote($table);
if (!PMA_exportData($current_db, $table, $crlf, $err_url, $local_query)) {
break 3;
}
}
// now export the triggers (needs to be done after the data because
// triggers can modify already imported tables)
if (isset($GLOBALS[$what . '_structure'])) {
if (!PMA_exportStructure($current_db, $table, $crlf, $err_url, $do_relation, $do_comments, $do_mime, $do_dates, 'triggers', $export_type)) {
break 2;
}
}
}
foreach($views as $view) {
// no data export for a view
if (isset($GLOBALS[$what . '_structure'])) {
if (!PMA_exportStructure($current_db, $view, $crlf, $err_url, $do_relation, $do_comments, $do_mime, $do_dates, 'create_view', $export_type)) {
break 3;
}
}
}
if (!PMA_exportDBFooter($current_db)) {
break 2;
}
}
}
} elseif ($export_type == 'database') {
if (!PMA_exportDBHeader($db)) {
break;
}
$i = 0;
$views = array();
// $tables contains the choices from the user (via $table_select)
foreach ($tables as $table) {
// if this is a view, collect it for later; views must be exported after
// the tables
$is_view = PMA_Table::isView($db, $table);
if ($is_view) {
$views[] = $table;
}
if (isset($GLOBALS[$what . '_structure'])) {
// for a view, export a stand-in definition of the table
// to resolve view dependencies
if (!PMA_exportStructure($db, $table, $crlf, $err_url, $do_relation, $do_comments, $do_mime, $do_dates, $is_view ? 'stand_in' : 'create_table', $export_type)) {
break 2;
}
}
if (isset($GLOBALS[$what . '_data']) && ! $is_view) {
$local_query = 'SELECT * FROM ' . PMA_backquote($db) . '.' . PMA_backquote($table);
if (!PMA_exportData($db, $table, $crlf, $err_url, $local_query)) {
break 2;
}
}
// now export the triggers (needs to be done after the data because
// triggers can modify already imported tables)
if (isset($GLOBALS[$what . '_structure'])) {
if (!PMA_exportStructure($db, $table, $crlf, $err_url, $do_relation, $do_comments, $do_mime, $do_dates, 'triggers', $export_type)) {
break 2;
}
}
}
foreach ($views as $view) {
// no data export for a view
if (isset($GLOBALS[$what . '_structure'])) {
if (!PMA_exportStructure($db, $view, $crlf, $err_url, $do_relation, $do_comments, $do_mime, $do_dates, 'create_view', $export_type)) {
break 2;
}
}
}
if (!PMA_exportDBFooter($db)) {
break;
}
} else {
if (!PMA_exportDBHeader($db)) {
break;
}
// We export just one table
// $allrows comes from the form when "Dump all rows" has been selected
if ($allrows == '0' && $limit_to > 0 && $limit_from >= 0) {
$add_query = ' LIMIT '
. (($limit_from > 0) ? $limit_from . ', ' : '')
. $limit_to;
} else {
$add_query = '';
}
$is_view = PMA_Table::isView($db, $table);
if (isset($GLOBALS[$what . '_structure'])) {
if (!PMA_exportStructure($db, $table, $crlf, $err_url, $do_relation, $do_comments, $do_mime, $do_dates, $is_view ? 'create_view' : 'create_table', $export_type)) {
break;
}
}
// If this is an export of a single view, we have to export data;
// for example, a PDF report
if (isset($GLOBALS[$what . '_data'])) {
if (!empty($sql_query)) {
// only preg_replace if needed
if (!empty($add_query)) {
// remove trailing semicolon before adding a LIMIT
$sql_query = preg_replace('%;\s*$%', '', $sql_query);
}
$local_query = $sql_query . $add_query;
PMA_DBI_select_db($db);
} else {
$local_query = 'SELECT * FROM ' . PMA_backquote($db) . '.' . PMA_backquote($table) . $add_query;
}
if (!PMA_exportData($db, $table, $crlf, $err_url, $local_query)) {
break;
}
}
// now export the triggers (needs to be done after the data because
// triggers can modify already imported tables)
if (isset($GLOBALS[$what . '_structure'])) {
if (!PMA_exportStructure($db, $table, $crlf, $err_url, $do_relation, $do_comments, $do_mime, $do_dates, 'triggers', $export_type)) {
break 2;
}
}
if (!PMA_exportDBFooter($db)) {
break;
}
}
if (!PMA_exportFooter()) {
break;
}
} while (false);
// End of fake loop
if ($save_on_server && isset($message)) {
$GLOBALS['js_include'][] = 'functions.js';
require_once './libraries/header.inc.php';
if ($export_type == 'server') {
$active_page = 'server_export.php';
require './server_export.php';
} elseif ($export_type == 'database') {
$active_page = 'db_export.php';
require './db_export.php';
} else {
$active_page = 'tbl_export.php';
require './tbl_export.php';
}
exit();
}
/**
* Send the dump as a file...
*/
if (!empty($asfile)) {
// Convert the charset if required.
if ($output_charset_conversion) {
$dump_buffer = PMA_convert_string($GLOBALS['charset'], $GLOBALS['charset_of_file'], $dump_buffer);
}
// Do the compression
// 1. as a zipped file
if ($compression == 'zip') {
if (@function_exists('gzcompress')) {
$zipfile = new zipfile();
$zipfile -> addFile($dump_buffer, substr($filename, 0, -4));
$dump_buffer = $zipfile -> file();
}
}
// 2. as a bzipped file
elseif ($compression == 'bzip') {
if (@function_exists('bzcompress')) {
$dump_buffer = bzcompress($dump_buffer);
}
}
// 3. as a gzipped file
elseif ($compression == 'gzip') {
if (@function_exists('gzencode') && !@ini_get('zlib.output_compression')) {
// without the optional parameter level because it bug
$dump_buffer = gzencode($dump_buffer);
}
}
/* If ve saved on server, we have to close file now */
if ($save_on_server) {
$write_result = @fwrite($file_handle, $dump_buffer);
fclose($file_handle);
if (strlen($dump_buffer) !=0 && (!$write_result || ($write_result != strlen($dump_buffer)))) {
$message = new PMA_Message('strNoSpace', PMA_Message::ERROR, $save_filename);
} else {
$message = new PMA_Message('strDumpSaved', PMA_Message::SUCCESS, $save_filename);
}
$GLOBALS['js_include'][] = 'functions.js';
require_once './libraries/header.inc.php';
if ($export_type == 'server') {
$active_page = 'server_export.php';
require_once './server_export.php';
} elseif ($export_type == 'database') {
$active_page = 'db_export.php';
require_once './db_export.php';
} else {
$active_page = 'tbl_export.php';
require_once './tbl_export.php';
}
exit();
} else {
echo $dump_buffer;
}
}
/**
* Displays the dump...
*/
else {
/**
* Close the html tags and add the footers in dump is displayed on screen
*/
//echo ' </pre>' . "\n";
echo '</textarea>' . "\n"
. ' </form>' . "\n";
echo '</div>' . "\n";
echo "\n";
?>
<script type="text/javascript">
//<![CDATA[
var bodyWidth=null; var bodyHeight=null;
if (document.getElementById('textSQLDUMP')) {
bodyWidth = self.innerWidth;
bodyHeight = self.innerHeight;
if (!bodyWidth && !bodyHeight) {
if (document.compatMode && document.compatMode == "BackCompat") {
bodyWidth = document.body.clientWidth;
bodyHeight = document.body.clientHeight;
} else if (document.compatMode && document.compatMode == "CSS1Compat") {
bodyWidth = document.documentElement.clientWidth;
bodyHeight = document.documentElement.clientHeight;
}
}
document.getElementById('textSQLDUMP').style.width=(bodyWidth-50) + 'px';
document.getElementById('textSQLDUMP').style.height=(bodyHeight-100) + 'px';
}
//]]>
</script>
<?php
require_once './libraries/footer.inc.php';
} // end if
?>