140 lines
4.2 KiB
PHP
140 lines
4.2 KiB
PHP
<?php
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/**
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* Does an export of a database, schema, or table (via pg_dump)
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* to the screen or as a download.
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*
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* $Id: dbexport.php,v 1.22 2007/03/25 03:15:09 xzilla Exp $
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*/
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// Prevent timeouts on large exports (non-safe mode only)
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if (!ini_get('safe_mode')) set_time_limit(0);
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// Include application functions
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$_no_output = true;
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$f_schema = $f_object = '';
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include_once('./libraries/lib.inc.php');
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// Are we doing a cluster-wide dump or just a per-database dump
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$dumpall = ($_REQUEST['subject'] == 'server');
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// Check that database dumps are enabled.
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if ($misc->isDumpEnabled($dumpall)) {
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$server_info = $misc->getServerInfo();
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// Get the path of the pg_dump/pg_dumpall executable
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$exe = $misc->escapeShellCmd($server_info[$dumpall ? 'pg_dumpall_path' : 'pg_dump_path']);
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// Obtain the pg_dump version number and check if the path is good
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$version = array();
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preg_match("/(\d+(?:\.\d+)?)(?:\.\d+)?.*$/", exec($exe . " --version"), $version);
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if (empty($version)) {
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if ($dumpall)
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printf($lang['strbadpgdumpallpath'], $server_info['pg_dumpall_path']);
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else
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printf($lang['strbadpgdumppath'], $server_info['pg_dump_path']);
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exit;
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}
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// Make it do a download, if necessary
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switch($_REQUEST['output']){
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case 'show':
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header('Content-Type: text/plain');
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break;
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case 'download':
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// Set headers. MSIE is totally broken for SSL downloading, so
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// we need to have it download in-place as plain text
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if (strstr($_SERVER['HTTP_USER_AGENT'], 'MSIE') && isset($_SERVER['HTTPS'])) {
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header('Content-Type: text/plain');
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}
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else {
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header('Content-Type: application/download');
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header('Content-Disposition: attachment; filename=dump.sql');
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}
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break;
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case 'gzipped':
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// MSIE in SSL mode cannot do this - it should never get to this point
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header('Content-Type: application/download');
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header('Content-Disposition: attachment; filename=dump.sql.gz');
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break;
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}
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// Set environmental variables that pg_dump uses
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putenv('PGPASSWORD=' . $server_info['password']);
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putenv('PGUSER=' . $server_info['username']);
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$hostname = $server_info['host'];
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if ($hostname !== null && $hostname != '') {
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putenv('PGHOST=' . $hostname);
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}
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$port = $server_info['port'];
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if ($port !== null && $port != '') {
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putenv('PGPORT=' . $port);
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}
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// Build command for executing pg_dump. '-i' means ignore version differences.
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$cmd = $exe . " -i";
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// we are PG 7.4+, so we always have a schema
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if (isset($_REQUEST['schema'])) {
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$f_schema = $_REQUEST['schema'];
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$data->fieldClean($f_schema);
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}
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// Check for a specified table/view
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switch ($_REQUEST['subject']) {
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case 'schema':
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// This currently works for 8.2+ (due to the orthoganl -t -n issue introduced then)
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$cmd .= " -n " . $misc->escapeShellArg("\"{$f_schema}\"");
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break;
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case 'table':
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case 'view':
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$f_object = $_REQUEST[$_REQUEST['subject']];
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$data->fieldClean($f_object);
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// Starting in 8.2, -n and -t are orthagonal, so we now schema qualify
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// the table name in the -t argument and quote both identifiers
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if ( ((float) $version[1]) >= 8.2 ) {
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$cmd .= " -t " . $misc->escapeShellArg("\"{$f_schema}\".\"{$f_object}\"");
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}
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else {
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// If we are 7.4 or higher, assume they are using 7.4 pg_dump and
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// set dump schema as well. Also, mixed case dumping has been fixed
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// then..
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$cmd .= " -t " . $misc->escapeShellArg($f_object)
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. " -n " . $misc->escapeShellArg($f_schema);
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}
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}
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// Check for GZIP compression specified
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if ($_REQUEST['output'] == 'gzipped' && !$dumpall) {
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$cmd .= " -Z 9";
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}
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switch ($_REQUEST['what']) {
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case 'dataonly':
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$cmd .= ' -a';
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if ($_REQUEST['d_format'] == 'sql') $cmd .= ' --inserts';
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elseif (isset($_REQUEST['d_oids'])) $cmd .= ' -o';
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break;
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case 'structureonly':
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$cmd .= ' -s';
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if (isset($_REQUEST['s_clean'])) $cmd .= ' -c';
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break;
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case 'structureanddata':
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if ($_REQUEST['sd_format'] == 'sql') $cmd .= ' --inserts';
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elseif (isset($_REQUEST['sd_oids'])) $cmd .= ' -o';
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if (isset($_REQUEST['sd_clean'])) $cmd .= ' -c';
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break;
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}
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if (!$dumpall) {
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putenv('PGDATABASE=' . $_REQUEST['database']);
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}
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// Execute command and return the output to the screen
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passthru($cmd);
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}
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?>
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