export.php

   1 <?php
   2 /* vim: set expandtab sw=4 ts=4 sts=4: */
   3 /**
   4  * Main export handling code
   5  *
   6  * @package PhpMyAdmin
   7  */
   8
   9 /**
  10  * Get the variables sent or posted to this script and a core script
  11  */
  12 if (!defined('TESTSUITE')) {
  13     /**
  14      * If we are sending the export file (as opposed to just displaying it
  15      * as text), we have to bypass the usual PMA_Response mechanism
  16      */
  17     if (isset($_POST['output_format']) && $_POST['output_format'] == 'sendit') {
  18         define('PMA_BYPASS_GET_INSTANCE', 1);
  19     }
  20     include_once 'libraries/common.inc.php';
  21     include_once 'libraries/zip.lib.php';
  22     include_once 'libraries/plugin_interface.lib.php';
  23     include_once 'libraries/export.lib.php';
  24
  25     //check if it's the GET request to check export time out
  26     if (isset($_GET['check_time_out'])) {
  27         if (isset($_SESSION['pma_export_error'])) {
  28             $err = $_SESSION['pma_export_error'];
  29             unset($_SESSION['pma_export_error']);
  30             echo "timeout";
  31         } else {
  32             echo "success";
  33         }
  34         exit;
  35     }
  36     /**
  37      * Sets globals from $_POST
  38      *
  39      * - Please keep the parameters in order of their appearance in the form
  40      * - Some of these parameters are not used, as the code below directly
  41      *   verifies from the superglobal $_POST or $_REQUEST
  42      */
  43     $post_params = array(
  44             'db',
  45             'table',
  46             'single_table',
  47             'export_type',
  48             'export_method',
  49             'quick_or_custom',
  50             'db_select',
  51             'table_select',
  52             'table_structure',
  53             'table_data',
  54             'limit_to',
  55             'limit_from',
  56             'allrows',
  57             'lock_tables',
  58             'output_format',
  59             'filename_template',
  60             'maxsize',
  61             'remember_template',
  62             'charset',
  63             'compression',
  64             'as_separate_files',
  65             'knjenc',
  66             'xkana',
  67             'htmlword_structure_or_data',
  68             'htmlword_null',
  69             'htmlword_columns',
  70             'mediawiki_headers',
  71             'mediawiki_structure_or_data',
  72             'mediawiki_caption',
  73             'pdf_structure_or_data',
  74             'odt_structure_or_data',
  75             'odt_relation',
  76             'odt_comments',
  77             'odt_mime',
  78             'odt_columns',
  79             'odt_null',
  80             'codegen_structure_or_data',
  81             'codegen_format',
  82             'excel_null',
  83             'excel_removeCRLF',
  84             'excel_columns',
  85             'excel_edition',
  86             'excel_structure_or_data',
  87             'yaml_structure_or_data',
  88             'ods_null',
  89             'ods_structure_or_data',
  90             'ods_columns',
  91             'json_structure_or_data',
  92             'json_pretty_print',
  93             'xml_structure_or_data',
  94             'xml_export_events',
  95             'xml_export_functions',
  96             'xml_export_procedures',
  97             'xml_export_tables',
  98             'xml_export_triggers',
  99             'xml_export_views',
 100             'xml_export_contents',
 101             'texytext_structure_or_data',
 102             'texytext_columns',
 103             'texytext_null',
 104             'phparray_structure_or_data',
 105             'sql_include_comments',
 106             'sql_header_comment',
 107             'sql_dates',
 108             'sql_relation',
 109             'sql_mime',
 110             'sql_use_transaction',
 111             'sql_disable_fk',
 112             'sql_compatibility',
 113             'sql_structure_or_data',
 114             'sql_create_database',
 115             'sql_drop_table',
 116             'sql_procedure_function',
 117             'sql_create_table',
 118             'sql_create_view',
 119             'sql_create_trigger',
 120             'sql_if_not_exists',
 121             'sql_auto_increment',
 122             'sql_backquotes',
 123             'sql_truncate',
 124             'sql_delayed',
 125             'sql_ignore',
 126             'sql_type',
 127             'sql_insert_syntax',
 128             'sql_max_query_size',
 129             'sql_hex_for_binary',
 130             'sql_utc_time',
 131             'sql_drop_database',
 132             'sql_views_as_tables',
 133             'sql_metadata',
 134             'csv_separator',
 135             'csv_enclosed',
 136             'csv_escaped',
 137             'csv_terminated',
 138             'csv_null',
 139             'csv_removeCRLF',
 140             'csv_columns',
 141             'csv_structure_or_data',
 142             // csv_replace should have been here but we use it directly from $_POST
 143             'latex_caption',
 144             'latex_structure_or_data',
 145             'latex_structure_caption',
 146             'latex_structure_continued_caption',
 147             'latex_structure_label',
 148             'latex_relation',
 149             'latex_comments',
 150             'latex_mime',
 151             'latex_columns',
 152             'latex_data_caption',
 153             'latex_data_continued_caption',
 154             'latex_data_label',
 155             'latex_null',
 156             'aliases'
 157     );
 158
 159     foreach ($post_params as $one_post_param) {
 160         if (isset($_POST[$one_post_param])) {
 161             $GLOBALS[$one_post_param] = $_POST[$one_post_param];
 162         }
 163     }
 164
 165     $table = $GLOBALS['table'];
 166     // sanitize this parameter which will be used below in a file inclusion
 167     $what = PMA_securePath($_POST['what']);
 168
 169     PMA_Util::checkParameters(array('what', 'export_type'));
 170
 171     // export class instance, not array of properties, as before
 172     /* @var $export_plugin ExportPlugin */
 173     $export_plugin = PMA_getPlugin(
 174         "export",
 175         $what,
 176         'libraries/plugins/export/',
 177         array(
 178             'export_type' => $export_type,
 179             'single_table' => isset($single_table)
 180         )
 181     );
 182
 183     // Backward compatibility
 184     $type = $what;
 185
 186     // Check export type
 187     if (empty($export_plugin)) {
 188         PMA_fatalError(__('Bad type!'));
 189     }
 190
 191     /**
 192      * valid compression methods
 193      */
 194     $compression_methods = array(
 195         'zip',
 196         'gzip'
 197     );
 198
 199     /**
 200      * init and variable checking
 201      */
 202     $compression = false;
 203     $onserver = false;
 204     $save_on_server = false;
 205     $buffer_needed = false;
 206     $back_button = '';
 207     $save_filename = '';
 208     $file_handle = '';
 209     $err_url = '';
 210     $filename = '';
 211     $separate_files = '';
 212
 213     // Is it a quick or custom export?
 214     if ($_REQUEST['quick_or_custom'] == 'quick') {
 215         $quick_export = true;
 216     } else {
 217         $quick_export = false;
 218     }
 219
 220     if ($_REQUEST['output_format'] == 'astext') {
 221         $asfile = false;
 222     } else {
 223         $asfile = true;
 224         if (isset($_REQUEST['as_separate_files'])
 225             && ! empty($_REQUEST['as_separate_files'])
 226         ) {
 227             if (isset($_REQUEST['compression'])
 228                 && ! empty($_REQUEST['compression'])
 229                 && $_REQUEST['compression'] == 'zip'
 230             ) {
 231                 $separate_files = $_REQUEST['as_separate_files'];
 232             }
 233         }
 234         if (in_array($_REQUEST['compression'], $compression_methods)) {
 235             $compression = $_REQUEST['compression'];
 236             $buffer_needed = true;
 237         }
 238         if (($quick_export && ! empty($_REQUEST['quick_export_onserver']))
 239             || (! $quick_export && ! empty($_REQUEST['onserver']))
 240         ) {
 241             if ($quick_export) {
 242                 $onserver = $_REQUEST['quick_export_onserver'];
 243             } else {
 244                 $onserver = $_REQUEST['onserver'];
 245             }
 246             // Will we save dump on server?
 247             $save_on_server = ! empty($cfg['SaveDir']) && $onserver;
 248         }
 249     }
 250
 251     // Generate error url and check for needed variables
 252     /** @var PMA_String $pmaString */
 253     $pmaString = $GLOBALS['PMA_String'];
 254     if ($export_type == 'server') {
 255         $err_url = 'server_export.php' . PMA_URL_getCommon();
 256     } elseif ($export_type == 'database'
 257         && /*overload*/mb_strlen($db)
 258     ) {
 259         $err_url = 'db_export.php' . PMA_URL_getCommon(array('db' => $db));
 260         // Check if we have something to export
 261         if (isset($table_select)) {
 262             $tables = $table_select;
 263         } else {
 264             $tables = array();
 265         }
 266     } elseif ($export_type == 'table' && /*overload*/mb_strlen($db)
 267         && /*overload*/mb_strlen($table)
 268     ) {
 269         $err_url = 'tbl_export.php' . PMA_URL_getCommon(
 270             array(
 271                 'db' => $db, 'table' => $table
 272             )
 273         );
 274     } else {
 275         PMA_fatalError(__('Bad parameters!'));
 276     }
 277
 278     // Merge SQL Query aliases with Export aliases from
 279     // export page, Export page aliases are given more
 280     // preference over SQL Query aliases.
 281     $parser = new SqlParser\Parser($sql_query);
 282     $aliases = array();
 283     if ((!empty($parser->statements[0]))
 284         && ($parser->statements[0] instanceof SqlParser\Statements\SelectStatement)
 285     ) {
 286         if (!empty($_REQUEST['aliases'])) {
 287             $aliases = PMA_mergeAliases(
 288                 SqlParser\Utils\Misc::getAliases($parser->statements[0], $db),
 289                 $_REQUEST['aliases']
 290             );
 291             $_SESSION['tmpval']['aliases'] = $_REQUEST['aliases'];
 292         } else {
 293             $aliases = SqlParser\Utils\Misc::getAliases($parser->statements[0], $db);
 294         }
 295     }
 296
 297     /**
 298      * Increase time limit for script execution and initializes some variables
 299      */
 300     @set_time_limit($cfg['ExecTimeLimit']);
 301     if (! empty($cfg['MemoryLimit'])) {
 302         @ini_set('memory_limit', $cfg['MemoryLimit']);
 303     }
 304     register_shutdown_function('PMA_shutdownDuringExport');
 305     // Start with empty buffer
 306     $dump_buffer = '';
 307     $dump_buffer_len = 0;
 308
 309     // Array of dump_buffers - used in separate file exports
 310     $dump_buffer_objects = array();
 311
 312     // We send fake headers to avoid browser timeout when buffering
 313     $time_start = time();
 314
 315     // Defines the default <CR><LF> format.
 316     // For SQL always use \n as MySQL wants this on all platforms.
 317     if ($what == 'sql') {
 318         $crlf = "\n";
 319     } else {
 320         $crlf = PMA_Util::whichCrlf();
 321     }
 322
 323     $output_kanji_conversion = function_exists('PMA_Kanji_strConv')
 324         && $type != 'xls';
 325
 326     // Do we need to convert charset?
 327     $output_charset_conversion = $asfile
 328         && $GLOBALS['PMA_recoding_engine'] != PMA_CHARSET_NONE
 329         && isset($charset) && $charset != 'utf-8'
 330         && $type != 'xls';
 331
 332     // Use on the fly compression?
 333     $GLOBALS['onfly_compression'] = $GLOBALS['cfg']['CompressOnFly']
 334         && $compression == 'gzip';
 335     if ($GLOBALS['onfly_compression']) {
 336         $GLOBALS['memory_limit'] = PMA_getMemoryLimitForExport();
 337     }
 338
 339     // Generate filename and mime type if needed
 340     if ($asfile) {
 341         if (empty($remember_template)) {
 342             $remember_template = '';
 343         }
 344         list($filename, $mime_type) = PMA_getExportFilenameAndMimetype(
 345             $export_type, $remember_template, $export_plugin, $compression,
 346             $filename_template
 347         );
 348     } else {
 349         $mime_type = '';
 350     }
 351
 352     // Open file on server if needed
 353     if ($save_on_server) {
 354         list($save_filename, $message, $file_handle) = PMA_openExportFile(
 355             $filename, $quick_export
 356         );
 357
 358         // problem opening export file on server?
 359         if (! empty($message)) {
 360             PMA_showExportPage($db, $table, $export_type);
 361         }
 362     } else {
 363         /**
 364          * Send headers depending on whether the user chose to download a dump file
 365          * or not
 366          */
 367         if ($asfile) {
 368             // Download
 369             // (avoid rewriting data containing HTML with anchors and forms;
 370             // this was reported to happen under Plesk)
 371             @ini_set('url_rewriter.tags', '');
 372             $filename = PMA_sanitizeFilename($filename);
 373
 374             PMA_downloadHeader($filename, $mime_type);
 375         } else {
 376             // HTML
 377             if ($export_type == 'database') {
 378                 $num_tables = count($tables);
 379                 if ($num_tables == 0) {
 380                     $message = PMA_Message::error(
 381                         __('No tables found in database.')
 382                     );
 383                     $active_page = 'db_export.php';
 384                     include 'db_export.php';
 385                     exit();
 386                 }
 387             }
 388             list($html, $back_button) = PMA_getHtmlForDisplayedExportHeader(
 389                 $export_type, $db, $table
 390             );
 391             echo $html;
 392             unset($html);
 393         } // end download
 394     }
 395
 396     // Fake loop just to allow skip of remain of this code by break, I'd really
 397     // need exceptions here :-)
 398     do {
 399
 400         // Add possibly some comments to export
 401         if (! $export_plugin->exportHeader()) {
 402             break;
 403         }
 404         // Re - initialize
 405         $dump_buffer = '';
 406         $dump_buffer_len = 0;
 407
 408         // Will we need relation & co. setup?
 409         $do_relation = isset($GLOBALS[$what . '_relation']);
 410         $do_comments = isset($GLOBALS[$what . '_include_comments'])
 411             || isset($GLOBALS[$what . '_comments']) ;
 412         $do_mime     = isset($GLOBALS[$what . '_mime']);
 413         if ($do_relation || $do_comments || $do_mime) {
 414             $cfgRelation = PMA_getRelationsParam();
 415         }
 416         if ($do_mime) {
 417             include_once 'libraries/transformations.lib.php';
 418         }
 419
 420         // Include dates in export?
 421         $do_dates = isset($GLOBALS[$what . '_dates']);
 422
 423         $whatStrucOrData = $GLOBALS[$what . '_structure_or_data'];
 424
 425         /**
 426          * Builds the dump
 427          */
 428         if ($export_type == 'server') {
 429             if (! isset($db_select)) {
 430                 $db_select = '';
 431             }
 432             PMA_exportServer(
 433                 $db_select, $whatStrucOrData, $export_plugin, $crlf, $err_url,
 434                 $export_type, $do_relation, $do_comments, $do_mime, $do_dates,
 435                 $aliases, $separate_files
 436             );
 437         } elseif ($export_type == 'database') {
 438             if (!isset($table_structure) || !is_array($table_structure)) {
 439                 $table_structure = array();
 440             }
 441             if (!isset($table_data) || !is_array($table_data)) {
 442                 $table_data = array();
 443             }
 444             if (!empty($_REQUEST['structure_or_data_forced'])) {
 445                 $table_structure = $tables;
 446                 $table_data = $tables;
 447             }
 448             if (isset($lock_tables)) {
 449                 PMA_lockTables($db, $tables, "READ");
 450                 try {
 451                     PMA_exportDatabase(
 452                         $db, $tables, $whatStrucOrData, $table_structure,
 453                         $table_data, $export_plugin, $crlf, $err_url, $export_type,
 454                         $do_relation, $do_comments, $do_mime, $do_dates, $aliases,
 455                         $separate_files
 456                     );
 457                     PMA_unlockTables();
 458                 } catch (Exception $e) { // TODO use finally when PHP version is 5.5
 459                     PMA_unlockTables();
 460                     throw $e;
 461                 }
 462             } else {
 463                 PMA_exportDatabase(
 464                     $db, $tables, $whatStrucOrData, $table_structure, $table_data,
 465                     $export_plugin, $crlf, $err_url, $export_type, $do_relation,
 466                     $do_comments, $do_mime, $do_dates, $aliases, $separate_files
 467                 );
 468             }
 469         } else {
 470             // We export just one table
 471             // $allrows comes from the form when "Dump all rows" has been selected
 472             if (! isset($allrows)) {
 473                 $allrows = '';
 474             }
 475             if (! isset($limit_to)) {
 476                 $limit_to = 0;
 477             }
 478             if (! isset($limit_from)) {
 479                 $limit_from = 0;
 480             }
 481             if (isset($lock_tables)) {
 482                 try {
 483                     PMA_lockTables($db, array($table), "READ");
 484                     PMA_exportTable(
 485                         $db, $table, $whatStrucOrData, $export_plugin, $crlf,
 486                         $err_url, $export_type, $do_relation, $do_comments,
 487                         $do_mime, $do_dates, $allrows, $limit_to, $limit_from,
 488                         $sql_query, $aliases
 489                     );
 490                     PMA_unlockTables();
 491                 } catch (Exception $e) { // TODO use finally when PHP version is 5.5
 492                     PMA_unlockTables();
 493                     throw $e;
 494                 }
 495             } else {
 496                 PMA_exportTable(
 497                     $db, $table, $whatStrucOrData, $export_plugin, $crlf, $err_url,
 498                     $export_type, $do_relation, $do_comments, $do_mime, $do_dates,
 499                     $allrows, $limit_to, $limit_from, $sql_query, $aliases
 500                 );
 501             }
 502         }
 503         if (! $export_plugin->exportFooter()) {
 504             break;
 505         }
 506
 507     } while (false);
 508     // End of fake loop
 509
 510     if ($save_on_server && ! empty($message)) {
 511         PMA_showExportPage($db, $table, $export_type);
 512     }
 513
 514     /**
 515      * Send the dump as a file...
 516      */
 517     if (empty($asfile)) {
 518         echo PMA_getHtmlForDisplayedExportFooter($back_button);
 519         return;
 520     } // end if
 521
 522     // Convert the charset if required.
 523     if ($output_charset_conversion) {
 524         $dump_buffer = PMA_convertString(
 525             'utf-8',
 526             $GLOBALS['charset'],
 527             $dump_buffer
 528         );
 529     }
 530
 531     // Compression needed?
 532     if ($compression) {
 533         if (! empty($separate_files)) {
 534             $dump_buffer = PMA_compressExport(
 535                 $dump_buffer_objects, $compression, $filename
 536             );
 537         } else {
 538             $dump_buffer = PMA_compressExport($dump_buffer, $compression, $filename);
 539         }
 540
 541     }
 542
 543     /* If we saved on server, we have to close file now */
 544     if ($save_on_server) {
 545         $message = PMA_closeExportFile(
 546             $file_handle, $dump_buffer, $save_filename
 547         );
 548         PMA_showExportPage($db, $table, $export_type);
 549     } else {
 550         echo $dump_buffer;
 551     }
 552 }