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[phpmyadmin/last10db.git] / export.php
blob4b7602bcaa93e6a809181bc58b5fa9155c5e05fa
1 <?php
2 /* $Id$ */
3 // vim: expandtab sw=4 ts=4 sts=4:
5 /**
6 * Get the variables sent or posted to this script and a core script
7 */
8 require_once('./libraries/common.lib.php');
9 require_once('./libraries/zip.lib.php');
10 require_once('./libraries/plugin_interface.lib.php');
12 PMA_checkParameters(array('what', 'export_type'));
14 // Scan plugins
15 $export_list = PMA_getPlugins('./libraries/export/', array('export_type' => $export_type, 'single_table' => isset($single_table)));
17 // Backward compatbility
18 $type = $what;
20 // Check export type
21 if (!isset($export_list[$type])) {
22 die('Bad type!');
25 // Does export require to be into file?
26 if (isset($export_list[$type]['force_file']) && ! isset($asfile)) {
27 $message = $strExportMustBeFile;
28 $GLOBALS['show_error_header'] = true;
29 $js_to_run = 'functions.js';
30 require_once('./libraries/header.inc.php');
31 if ($export_type == 'server') {
32 $active_page = 'server_export.php';
33 require('./server_export.php');
34 } elseif ($export_type == 'database') {
35 $active_page = 'db_export.php';
36 require('./db_export.php');
37 } else {
38 $active_page = 'tbl_export.php';
39 require('./tbl_export.php');
41 exit();
44 // Generate error url and check for needed variables
45 if ($export_type == 'server') {
46 $err_url = 'server_export.php?' . PMA_generate_common_url();
47 } elseif ($export_type == 'database' && isset($db) && strlen($db)) {
48 $err_url = 'db_export.php?' . PMA_generate_common_url($db);
49 // Check if we have something to export
50 if (isset($table_select)) {
51 $tables = $table_select;
52 } else {
53 $tables = array();
55 } elseif ($export_type == 'table' && isset($db) && strlen($db) && isset($table) && strlen($table)) {
56 $err_url = 'tbl_export.php?' . PMA_generate_common_url($db, $table);
57 } else {
58 die('Bad parameters!');
61 // Get the functions specific to the export type
62 require('./libraries/export/' . PMA_securePath($type) . '.php');
64 /**
65 * Increase time limit for script execution and initializes some variables
67 @set_time_limit($cfg['ExecTimeLimit']);
68 if (!empty($cfg['MemoryLimit'])) {
69 @ini_set('memory_limit', $cfg['MemoryLimit']);
72 // Start with empty buffer
73 $dump_buffer = '';
74 $dump_buffer_len = 0;
76 // We send fake headers to avoid browser timeout when buffering
77 $time_start = time();
80 /**
81 * Output handler for all exports, if needed buffering, it stores data into
82 * $dump_buffer, otherwise it prints thems out.
84 * @param string the insert statement
86 * @return bool Whether output suceeded
88 function PMA_exportOutputHandler($line)
90 global $time_start, $dump_buffer, $dump_buffer_len, $save_filename;
92 // Kanji encoding convert feature
93 if ($GLOBALS['output_kanji_conversion']) {
94 $line = PMA_kanji_str_conv($line, $GLOBALS['knjenc'], isset($GLOBALS['xkana']) ? $GLOBALS['xkana'] : '');
96 // If we have to buffer data, we will perform everything at once at the end
97 if ($GLOBALS['buffer_needed']) {
99 $dump_buffer .= $line;
100 if ($GLOBALS['onfly_compression']) {
102 $dump_buffer_len += strlen($line);
104 if ($dump_buffer_len > $GLOBALS['memory_limit']) {
105 if ($GLOBALS['output_charset_conversion']) {
106 $dump_buffer = PMA_convert_string($GLOBALS['charset'], $GLOBALS['charset_of_file'], $dump_buffer);
108 // as bzipped
109 if ($GLOBALS['compression'] == 'bzip' && @function_exists('bzcompress')) {
110 $dump_buffer = bzcompress($dump_buffer);
112 // as a gzipped file
113 elseif ($GLOBALS['compression'] == 'gzip' && @function_exists('gzencode')) {
114 // without the optional parameter level because it bug
115 $dump_buffer = gzencode($dump_buffer);
117 if ($GLOBALS['save_on_server']) {
118 $write_result = @fwrite($GLOBALS['file_handle'], $dump_buffer);
119 if (!$write_result || ($write_result != strlen($dump_buffer))) {
120 $GLOBALS['message'] = sprintf($GLOBALS['strNoSpace'], htmlspecialchars($save_filename));
121 $GLOBALS['show_error_header'] = TRUE;
122 return FALSE;
124 } else {
125 echo $dump_buffer;
127 $dump_buffer = '';
128 $dump_buffer_len = 0;
130 } else {
131 $time_now = time();
132 if ($time_start >= $time_now + 30) {
133 $time_start = $time_now;
134 header('X-pmaPing: Pong');
135 } // end if
137 } else {
138 if ($GLOBALS['asfile']) {
139 if ($GLOBALS['save_on_server'] && strlen($line) > 0) {
140 $write_result = @fwrite($GLOBALS['file_handle'], $line);
141 if (!$write_result || ($write_result != strlen($line))) {
142 $GLOBALS['message'] = sprintf($GLOBALS['strNoSpace'], htmlspecialchars($save_filename));
143 $GLOBALS['show_error_header'] = TRUE;
144 return FALSE;
146 $time_now = time();
147 if ($time_start >= $time_now + 30) {
148 $time_start = $time_now;
149 header('X-pmaPing: Pong');
150 } // end if
151 } else {
152 // We export as file - output normally
153 if ($GLOBALS['output_charset_conversion']) {
154 $line = PMA_convert_string($GLOBALS['charset'], $GLOBALS['charset_of_file'], $line);
156 echo $line;
158 } else {
159 // We export as html - replace special chars
160 echo htmlspecialchars($line);
163 return TRUE;
164 } // end of the 'PMA_exportOutputHandler()' function
166 // Will we save dump on server?
167 $save_on_server = isset($cfg['SaveDir']) && !empty($cfg['SaveDir']) && !empty($onserver);
169 // Ensure compressed formats are associated with the download feature
170 if (empty($asfile)) {
171 if ($save_on_server) {
172 $asfile = TRUE;
173 } elseif (isset($compression) && ($compression == 'zip' | $compression == 'gzip' | $compression == 'bzip')) {
174 $asfile = TRUE;
175 } else {
176 $asfile = FALSE;
178 } else {
179 $asfile = TRUE;
182 // Defines the default <CR><LF> format. For SQL always use \n as MySQL wants this on all platforms.
183 if ($what == 'sql') {
184 $crlf = "\n";
185 } else {
186 $crlf = PMA_whichCrlf();
189 $output_kanji_conversion = function_exists('PMA_kanji_str_conv') && $type != 'xls';
191 // Do we need to convert charset?
192 $output_charset_conversion = $asfile &&
193 $cfg['AllowAnywhereRecoding'] && $allow_recoding
194 && isset($charset_of_file) && $charset_of_file != $charset
195 && $type != 'xls';
197 // Set whether we will need buffering
198 $buffer_needed = isset($compression) && ($compression == 'zip' | $compression == 'gzip' | $compression == 'bzip');
200 // Use on fly compression?
201 $onfly_compression = $GLOBALS['cfg']['CompressOnFly'] && isset($compression) && ($compression == 'gzip' | $compression == 'bzip');
202 if ($onfly_compression) {
203 $memory_limit = trim(@ini_get('memory_limit'));
204 // 2 MB as default
205 if (empty($memory_limit)) {
206 $memory_limit = 2 * 1024 * 1024;
209 if (strtolower(substr($memory_limit, -1)) == 'm') {
210 $memory_limit = (int)substr($memory_limit, 0, -1) * 1024 * 1024;
211 } elseif (strtolower(substr($memory_limit, -1)) == 'k') {
212 $memory_limit = (int)substr($memory_limit, 0, -1) * 1024;
213 } elseif (strtolower(substr($memory_limit, -1)) == 'g') {
214 $memory_limit = (int)substr($memory_limit, 0, -1) * 1024 * 1024 * 1024;
215 } else {
216 $memory_limit = (int)$memory_limit;
219 // Some of memory is needed for other thins and as treshold.
220 // Nijel: During export I had allocated (see memory_get_usage function)
221 // approx 1.2MB so this comes from that.
222 if ($memory_limit > 1500000) {
223 $memory_limit -= 1500000;
226 // Some memory is needed for compression, assume 1/3
227 $memory_limit /= 8;
230 // Generate filename and mime type if needed
231 if ($asfile) {
232 $pma_uri_parts = parse_url($cfg['PmaAbsoluteUri']);
233 if ($export_type == 'server') {
234 if (isset($remember_template)) {
235 PMA_setCookie('pma_server_filename_template', $filename_template);
237 $filename = str_replace('__SERVER__', $GLOBALS['cfg']['Server']['host'], strftime($filename_template));
238 } elseif ($export_type == 'database') {
239 if (isset($remember_template)) {
240 PMA_setCookie('pma_db_filename_template', $filename_template);
242 $filename = str_replace('__DB__', $db, str_replace('__SERVER__', $GLOBALS['cfg']['Server']['host'], strftime($filename_template)));
243 } else {
244 if (isset($remember_template)) {
245 PMA_setCookie('pma_table_filename_template', $filename_template);
247 $filename = str_replace('__TABLE__', $table, str_replace('__DB__', $db, str_replace('__SERVER__', $GLOBALS['cfg']['Server']['host'], strftime($filename_template))));
250 // convert filename to iso-8859-1, it is safer
251 if (!(isset($cfg['AllowAnywhereRecoding']) && $cfg['AllowAnywhereRecoding'] && $allow_recoding)) {
252 $filename = PMA_convert_string($charset, 'iso-8859-1', $filename);
253 } else {
254 $filename = PMA_convert_string($convcharset, 'iso-8859-1', $filename);
257 // Grab basic dump extension and mime type
258 $filename .= '.' . $export_list[$type]['extension'];
259 $mime_type = $export_list[$type]['mime_type'];
261 // If dump is going to be compressed, set correct encoding or mime_type and add
262 // compression to extension
263 $content_encoding = '';
264 if (isset($compression) && $compression == 'bzip') {
265 $filename .= '.bz2';
266 // browsers don't like this:
267 //$content_encoding = 'x-bzip2';
268 $mime_type = 'application/x-bzip2';
269 } elseif (isset($compression) && $compression == 'gzip') {
270 $filename .= '.gz';
271 // Needed to avoid recompression by server modules like mod_gzip.
272 // It seems necessary to check about zlib.output_compression
273 // to avoid compressing twice
274 if (!@ini_get('zlib.output_compression')) {
275 $content_encoding = 'x-gzip';
276 $mime_type = 'application/x-gzip';
278 } elseif (isset($compression) && $compression == 'zip') {
279 $filename .= '.zip';
280 $mime_type = 'application/zip';
284 // Open file on server if needed
285 if ($save_on_server) {
286 $save_filename = PMA_userDir($cfg['SaveDir']) . preg_replace('@[/\\\\]@', '_', $filename);
287 unset($message);
288 if (file_exists($save_filename) && empty($onserverover)) {
289 $message = sprintf($strFileAlreadyExists, htmlspecialchars($save_filename));
290 $GLOBALS['show_error_header'] = TRUE;
291 } else {
292 if (is_file($save_filename) && !is_writable($save_filename)) {
293 $message = sprintf($strNoPermission, htmlspecialchars($save_filename));
294 $GLOBALS['show_error_header'] = TRUE;
295 } else {
296 if (!$file_handle = @fopen($save_filename, 'w')) {
297 $message = sprintf($strNoPermission, htmlspecialchars($save_filename));
298 $GLOBALS['show_error_header'] = TRUE;
302 if (isset($message)) {
303 $js_to_run = 'functions.js';
304 require_once('./libraries/header.inc.php');
305 if ($export_type == 'server') {
306 $active_page = 'server_export.php';
307 require('./server_export.php');
308 } elseif ($export_type == 'database') {
309 $active_page = 'db_export.php';
310 require('./db_export.php');
311 } else {
312 $active_page = 'tbl_export.php';
313 require('./tbl_export.php');
315 exit();
320 * Send headers depending on whether the user chose to download a dump file
321 * or not
323 if (!$save_on_server) {
324 if ($asfile ) {
325 // Download
326 if (!empty($content_encoding)) {
327 header('Content-Encoding: ' . $content_encoding);
329 header('Content-Type: ' . $mime_type);
330 header('Expires: ' . gmdate('D, d M Y H:i:s') . ' GMT');
331 // lem9: Tested behavior of
332 // IE 5.50.4807.2300
333 // IE 6.0.2800.1106 (small glitch, asks twice when I click Open)
334 // IE 6.0.2900.2180
335 // Firefox 1.0.6
336 // in http and https
337 header('Content-Disposition: attachment; filename="' . $filename . '"');
338 if (PMA_USR_BROWSER_AGENT == 'IE') {
339 header('Cache-Control: must-revalidate, post-check=0, pre-check=0');
340 header('Pragma: public');
341 } else {
342 header('Pragma: no-cache');
344 } else {
345 // HTML
346 if ($export_type == 'database') {
347 $num_tables = count($tables);
348 if ($num_tables == 0) {
349 $message = $strNoTablesFound;
350 $js_to_run = 'functions.js';
351 require_once('./libraries/header.inc.php');
352 $active_page = 'db_export.php';
353 require('./db_export.php');
354 exit();
357 $backup_cfgServer = $cfg['Server'];
358 require_once('./libraries/header.inc.php');
359 $cfg['Server'] = $backup_cfgServer;
360 unset($backup_cfgServer);
361 echo "\n" . '<div align="' . $cell_align_left . '">' . "\n";
362 //echo ' <pre>' . "\n";
363 echo ' <form name="nofunction">' . "\n"
364 // remove auto-select for now: there is no way to select
365 // only a part of the text; anyway, it should obey
366 // $cfg['TextareaAutoSelect']
367 //. ' <textarea name="sqldump" cols="50" rows="30" onclick="this.select();" id="textSQLDUMP" wrap="OFF">' . "\n";
368 . ' <textarea name="sqldump" cols="50" rows="30" id="textSQLDUMP" wrap="OFF">' . "\n";
369 } // end download
372 // Fake loop just to allow skip of remain of this code by break, I'd really
373 // need exceptions here :-)
374 do {
376 // Add possibly some comments to export
377 if (!PMA_exportHeader()) {
378 break;
381 // Will we need relation & co. setup?
382 $do_relation = isset($GLOBALS[$what . '_relation']);
383 $do_comments = isset($GLOBALS[$what . '_comments']);
384 $do_mime = isset($GLOBALS[$what . '_mime']);
385 if ($do_relation || $do_comments || $do_mime) {
386 require_once('./libraries/relation.lib.php');
387 $cfgRelation = PMA_getRelationsParam();
389 if ($do_mime) {
390 require_once('./libraries/transformations.lib.php');
393 // Include dates in export?
394 $do_dates = isset($GLOBALS[$what . '_dates']);
397 * Builds the dump
399 // Gets the number of tables if a dump of a database has been required
400 if ($export_type == 'server') {
401 if (isset($db_select)) {
402 $tmp_select = implode($db_select, '|');
403 $tmp_select = '|' . $tmp_select . '|';
405 // Walk over databases
406 foreach ($GLOBALS['PMA_List_Database']->items as $current_db) {
407 if ((isset($tmp_select) && strpos(' ' . $tmp_select, '|' . $current_db . '|'))
408 || !isset($tmp_select)) {
409 if (!PMA_exportDBHeader($current_db)) {
410 break 2;
412 if (!PMA_exportDBCreate($current_db)) {
413 break 2;
415 $tables = PMA_DBI_get_tables($current_db);
416 $views = array();
417 foreach ($tables as $table) {
418 // if this is a view, collect it for later; views must be exported
419 // after the tables
420 if (PMA_Table::isView($current_db, $table)) {
421 $views[] = $table;
422 continue;
424 $local_query = 'SELECT * FROM ' . PMA_backquote($current_db) . '.' . PMA_backquote($table);
425 if (isset($GLOBALS[$what . '_structure'])) {
426 if (!PMA_exportStructure($current_db, $table, $crlf, $err_url, $do_relation, $do_comments, $do_mime, $do_dates)) {
427 break 3;
430 if (isset($GLOBALS[$what . '_data'])) {
431 if (!PMA_exportData($current_db, $table, $crlf, $err_url, $local_query)) {
432 break 3;
436 foreach($views as $view) {
437 // no data export for a view
438 if (isset($GLOBALS[$what . '_structure'])) {
439 if (!PMA_exportStructure($current_db, $view, $crlf, $err_url, $do_relation, $do_comments, $do_mime, $do_dates)) {
440 break 3;
444 if (!PMA_exportDBFooter($current_db)) {
445 break 2;
449 } elseif ($export_type == 'database') {
450 if (!PMA_exportDBHeader($db)) {
451 break;
453 $i = 0;
454 $views = array();
455 // $tables contains the choices from the user (via $table_select)
456 foreach ($tables as $table) {
457 // if this is a view, collect it for later; views must be exported after
458 // the tables
459 if (PMA_Table::isView($db, $table)) {
460 $views[] = $table;
461 continue;
463 $local_query = 'SELECT * FROM ' . PMA_backquote($db) . '.' . PMA_backquote($table);
464 //if ((isset($tmp_select) && strpos(' ' . $tmp_select, '|' . $table . '|'))
465 //|| !isset($tmp_select)) {
467 if (isset($GLOBALS[$what . '_structure'])) {
468 if (!PMA_exportStructure($db, $table, $crlf, $err_url, $do_relation, $do_comments, $do_mime, $do_dates)) {
469 break 2;
472 if (isset($GLOBALS[$what . '_data'])) {
473 if (!PMA_exportData($db, $table, $crlf, $err_url, $local_query)) {
474 break 2;
479 foreach ($views as $view) {
480 // no data export for a view
481 if (isset($GLOBALS[$what . '_structure'])) {
482 if (!PMA_exportStructure($db, $view, $crlf, $err_url, $do_relation, $do_comments, $do_mime, $do_dates)) {
483 break 2;
488 if (!PMA_exportDBFooter($db)) {
489 break;
491 } else {
492 if (!PMA_exportDBHeader($db)) {
493 break;
495 // We export just one table
497 if ($limit_to > 0 && $limit_from >= 0) {
498 $add_query = ' LIMIT '
499 . (($limit_from > 0) ? $limit_from . ', ' : '')
500 . $limit_to;
501 } else {
502 $add_query = '';
505 if (!empty($sql_query)) {
506 // only preg_replace if needed
507 if (!empty($add_query)) {
508 // remove trailing semicolon before adding a LIMIT
509 $sql_query = preg_replace('%;\s*$%', '', $sql_query);
511 $local_query = $sql_query . $add_query;
512 PMA_DBI_select_db($db);
513 } else {
514 $local_query = 'SELECT * FROM ' . PMA_backquote($db) . '.' . PMA_backquote($table) . $add_query;
517 if (isset($GLOBALS[$what . '_structure'])) {
518 if (!PMA_exportStructure($db, $table, $crlf, $err_url, $do_relation, $do_comments, $do_mime, $do_dates)) {
519 break;
522 // I think we have to export data for a single view; for example PDF report
523 //if (isset($GLOBALS[$what . '_data']) && ! PMA_table::isView($db, $table)) {
524 if (isset($GLOBALS[$what . '_data'])) {
525 if (!PMA_exportData($db, $table, $crlf, $err_url, $local_query)) {
526 break;
529 if (!PMA_exportDBFooter($db)) {
530 break;
533 if (!PMA_exportFooter()) {
534 break;
537 } while (FALSE);
538 // End of fake loop
540 if ($save_on_server && isset($message)) {
541 $js_to_run = 'functions.js';
542 require_once('./libraries/header.inc.php');
543 if ($export_type == 'server') {
544 $active_page = 'server_export.php';
545 require('./server_export.php');
546 } elseif ($export_type == 'database') {
547 $active_page = 'db_export.php';
548 require('./db_export.php');
549 } else {
550 $active_page = 'tbl_export.php';
551 require('./tbl_export.php');
553 exit();
557 * Send the dump as a file...
559 if (!empty($asfile)) {
560 // Convert the charset if required.
561 if ($output_charset_conversion) {
562 $dump_buffer = PMA_convert_string($GLOBALS['charset'], $GLOBALS['charset_of_file'], $dump_buffer);
565 // Do the compression
566 // 1. as a gzipped file
567 if (isset($compression) && $compression == 'zip') {
568 if (@function_exists('gzcompress')) {
569 $zipfile = new zipfile();
570 $zipfile -> addFile($dump_buffer, substr($filename, 0, -4));
571 $dump_buffer = $zipfile -> file();
574 // 2. as a bzipped file
575 elseif (isset($compression) && $compression == 'bzip') {
576 if (@function_exists('bzcompress')) {
577 $dump_buffer = bzcompress($dump_buffer);
578 if ($dump_buffer === -8) {
579 require_once('./libraries/header.inc.php');
580 echo sprintf($strBzError, '<a href="http://bugs.php.net/bug.php?id=17300" target="_blank">17300</a>');
581 require_once('./libraries/footer.inc.php');
585 // 3. as a gzipped file
586 elseif (isset($compression) && $compression == 'gzip') {
587 if (@function_exists('gzencode')) {
588 // without the optional parameter level because it bug
589 $dump_buffer = gzencode($dump_buffer);
593 /* If ve saved on server, we have to close file now */
594 if ($save_on_server) {
595 $write_result = @fwrite($file_handle, $dump_buffer);
596 fclose($file_handle);
597 if (strlen($dump_buffer) !=0 && (!$write_result || ($write_result != strlen($dump_buffer)))) {
598 $message = sprintf($strNoSpace, htmlspecialchars($save_filename));
599 } else {
600 $message = sprintf($strDumpSaved, htmlspecialchars($save_filename));
603 $js_to_run = 'functions.js';
604 require_once('./libraries/header.inc.php');
605 if ($export_type == 'server') {
606 $active_page = 'server_export.php';
607 require_once('./server_export.php');
608 } elseif ($export_type == 'database') {
609 $active_page = 'db_export.php';
610 require_once('./db_export.php');
611 } else {
612 $active_page = 'tbl_export.php';
613 require_once('./tbl_export.php');
615 exit();
616 } else {
617 echo $dump_buffer;
621 * Displays the dump...
623 else {
625 * Close the html tags and add the footers in dump is displayed on screen
627 //echo ' </pre>' . "\n";
628 echo '</textarea>' . "\n"
629 . ' </form>' . "\n";
630 echo '</div>' . "\n";
631 echo "\n";
633 <script type="text/javascript" language="javascript">
634 //<![CDATA[
635 var bodyWidth=null; var bodyHeight=null;
636 if (document.getElementById('textSQLDUMP')) {
637 bodyWidth = self.innerWidth;
638 bodyHeight = self.innerHeight;
639 if (!bodyWidth && !bodyHeight) {
640 if (document.compatMode && document.compatMode == "BackCompat") {
641 bodyWidth = document.body.clientWidth;
642 bodyHeight = document.body.clientHeight;
643 } else if (document.compatMode && document.compatMode == "CSS1Compat") {
644 bodyWidth = document.documentElement.clientWidth;
645 bodyHeight = document.documentElement.clientHeight;
648 document.getElementById('textSQLDUMP').style.width=(bodyWidth-50) + 'px';
649 document.getElementById('textSQLDUMP').style.height=(bodyHeight-100) + 'px';
651 //]]>
652 </script>
653 <?php
654 require_once('./libraries/footer.inc.php');
655 } // end if