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