tbl_export.php

   1 <?php
   2 /* vim: set expandtab sw=4 ts=4 sts=4: */
   3 /**
   4  * Table export
   5  *
   6  * @package PhpMyAdmin
   7  */
   8 declare(strict_types=1);
   9
  10 use PhpMyAdmin\Config\PageSettings;
  11 use PhpMyAdmin\Display\Export;
  12 use PhpMyAdmin\Relation;
  13 use PhpMyAdmin\Response;
  14
  15 if (! defined('ROOT_PATH')) {
  16     define('ROOT_PATH', __DIR__ . DIRECTORY_SEPARATOR);
  17 }
  18
  19 /**
  20  *
  21  */
  22 require_once ROOT_PATH . 'libraries/common.inc.php';
  23
  24 PageSettings::showGroup('Export');
  25
  26 $response = Response::getInstance();
  27 $header   = $response->getHeader();
  28 $scripts  = $header->getScripts();
  29 $scripts->addFile('export.js');
  30
  31 // Get the relation settings
  32 $relation = new Relation($GLOBALS['dbi']);
  33 $cfgRelation = $relation->getRelationsParam();
  34
  35 $displayExport = new Export();
  36
  37 // handling export template actions
  38 if (isset($_POST['templateAction']) && $cfgRelation['exporttemplateswork']) {
  39     $displayExport->handleTemplateActions($cfgRelation);
  40     exit;
  41 }
  42
  43 /**
  44  * Gets tables information and displays top links
  45  */
  46 require_once ROOT_PATH . 'libraries/tbl_common.inc.php';
  47 $url_query .= '&amp;goto=tbl_export.php&amp;back=tbl_export.php';
  48
  49 // Dump of a table
  50
  51 $export_page_title = __('View dump (schema) of table');
  52
  53 // When we have some query, we need to remove LIMIT from that and possibly
  54 // generate WHERE clause (if we are asked to export specific rows)
  55
  56 if (! empty($sql_query)) {
  57     $parser = new PhpMyAdmin\SqlParser\Parser($sql_query);
  58
  59     if (! empty($parser->statements[0])
  60         && ($parser->statements[0] instanceof PhpMyAdmin\SqlParser\Statements\SelectStatement)
  61     ) {
  62         // Finding aliases and removing them, but we keep track of them to be
  63         // able to replace them in select expression too.
  64         $aliases = [];
  65         foreach ($parser->statements[0]->from as $from) {
  66             if (! empty($from->table) && ! empty($from->alias)) {
  67                 $aliases[$from->alias] = $from->table;
  68                 // We remove the alias of the table because they are going to
  69                 // be replaced anyway.
  70                 $from->alias = null;
  71                 $from->expr = null; // Force rebuild.
  72             }
  73         }
  74
  75         // Rebuilding the SELECT and FROM clauses.
  76         if (count($parser->statements[0]->from) > 0
  77             && count($parser->statements[0]->union) === 0
  78         ) {
  79             $replaces = [
  80                 [
  81                     'FROM',
  82                     'FROM ' . PhpMyAdmin\SqlParser\Components\ExpressionArray::build(
  83                         $parser->statements[0]->from
  84                     ),
  85                 ],
  86             ];
  87         }
  88
  89         // Checking if the WHERE clause has to be replaced.
  90         if (! empty($where_clause) && is_array($where_clause)) {
  91             $replaces[] = [
  92                 'WHERE',
  93                 'WHERE (' . implode(') OR (', $where_clause) . ')',
  94             ];
  95         }
  96
  97         // Preparing to remove the LIMIT clause.
  98         $replaces[] = [
  99             'LIMIT',
 100             '',
 101         ];
 102
 103         // Replacing the clauses.
 104         $sql_query = PhpMyAdmin\SqlParser\Utils\Query::replaceClauses(
 105             $parser->statements[0],
 106             $parser->list,
 107             $replaces
 108         );
 109
 110         // Removing the aliases by finding the alias followed by a dot.
 111         $tokens = PhpMyAdmin\SqlParser\Lexer::getTokens($sql_query);
 112         foreach ($aliases as $alias => $table) {
 113             $tokens = PhpMyAdmin\SqlParser\Utils\Tokens::replaceTokens(
 114                 $tokens,
 115                 [
 116                     [
 117                         'value_str' => $alias,
 118                     ],
 119                     [
 120                         'type' => PhpMyAdmin\SqlParser\Token::TYPE_OPERATOR,
 121                         'value_str' => '.',
 122                     ],
 123                 ],
 124                 [
 125                     new PhpMyAdmin\SqlParser\Token($table),
 126                     new PhpMyAdmin\SqlParser\Token('.', PhpMyAdmin\SqlParser\Token::TYPE_OPERATOR),
 127                 ]
 128             );
 129         }
 130         $sql_query = PhpMyAdmin\SqlParser\TokensList::build($tokens);
 131     }
 132
 133     echo PhpMyAdmin\Util::getMessage(PhpMyAdmin\Message::success());
 134 }
 135
 136 if (! isset($sql_query)) {
 137     $sql_query = '';
 138 }
 139 if (! isset($num_tables)) {
 140     $num_tables = 0;
 141 }
 142 if (! isset($unlim_num_rows)) {
 143     $unlim_num_rows = 0;
 144 }
 145 if (! isset($multi_values)) {
 146     $multi_values = '';
 147 }
 148 $response = Response::getInstance();
 149 $response->addHTML(
 150     $displayExport->getDisplay(
 151         'table',
 152         $db,
 153         $table,
 154         $sql_query,
 155         $num_tables,
 156         $unlim_num_rows,
 157         $multi_values
 158     )
 159 );