Viewing file:  tbl_replace_fields.inc.php (4.39 KB) -rw-rw-rw-
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<?php
/* vim: set expandtab sw=4 ts=4 sts=4: */
/**
* handle field values (possibly uploaded from a file)
*
* garvin: original if-clause checked, whether input was stored in a possible
* fields_upload_XX var. Now check, if the field is set. If it is empty or a
* malicious file, do not alter fields contents. If an empty or invalid file is
* specified, the binary data gets deleter. Maybe a nice new text-variable is
* appropriate to document this behaviour.
*
* garvin: security cautions! You could trick the form and submit any file the
* webserver has access to for upload to a binary field. Shouldn't be that easy! ;)
*
* garvin: default is to advance to the field-value parsing. Will only be set to
* true when a binary file is uploaded, thus bypassing further manipulation of $val.
*
* note: grab_globals has extracted the fields from _FILES or HTTP_POST_FILES
*
* @version $Id: tbl_replace_fields.inc.php 10536 2007-07-27 14:50:37Z lem9 $
*
* @uses $_REQUEST
* @uses defined()
* @uses define()
* @uses bin2hex()
* @uses strlen()
* @uses md5()
* @uses implode()
* @uses PMA_NO_VARIABLES_IMPORT
* @uses PMA_sqlAddslashes()
*/
/**
* do not import request variable into global scope
*/
if (! defined('PMA_NO_VARIABLES_IMPORT')) {
define('PMA_NO_VARIABLES_IMPORT', true);
}
/**
* Gets some core libraries
*/
require_once './libraries/common.inc.php';
require_once './libraries/File.class.php';
$file_to_insert = new PMA_File();
$file_to_insert->checkTblChangeForm($key, $rowcount);
$possibly_uploaded_val = $file_to_insert->getContent();
if ($file_to_insert->isError()) {
$message .= $file_to_insert->getError();
}
$file_to_insert->cleanUp();
if (false !== $possibly_uploaded_val) {
$seen_binary = true;
$val = $possibly_uploaded_val;
} else {
// f i e l d v a l u e i n t h e f o r m
if (isset($me_fields_type[$key])) {
$type = $me_fields_type[$key];
} else {
$type = '';
}
$f = 'field_' . md5($key);
if (0 === strlen($val)) {
// default
$val = "''";
switch ($type) {
case 'enum':
// if we have an enum, then construct the value
case 'set':
// if we have a set, then construct the value
case 'foreign':
// if we have a foreign key, then construct the value
if (! empty($_REQUEST[$f]['multi_edit'][$rowcount])) {
$val = implode(',', $_REQUEST[$f]['multi_edit'][$rowcount]);
$val = "'" . PMA_sqlAddslashes($val) . "'";
}
break;
case 'protected':
// here we are in protected mode (asked in the config)
// so tbl_change has put this special value in the
// fields array, so we do not change the field value
// but we can still handle field upload
// garvin: when in UPDATE mode, do not alter field's contents. When in INSERT
// mode, insert empty field because no values were submitted. If protected
// blobs where set, insert original fields content.
if (! empty($prot_row[$key])) {
$val = '0x' . bin2hex($prot_row[$key]);
$seen_binary = true;
} else {
$val = '';
}
break;
default:
// best way to avoid problems in strict mode (works also in non-strict mode)
if (isset($me_auto_increment) && isset($me_auto_increment[$key])) {
$val = 'NULL';
}
break;
}
} elseif ($type == 'bit') {
$val = preg_replace('/[^01]/', '0', $val);
$val = "b'" . PMA_sqlAddslashes($val) . "'";
} elseif (! ($type == 'timestamp' && $val == 'CURRENT_TIMESTAMP')) {
$val = "'" . PMA_sqlAddslashes($val) . "'";
}
// Was the Null checkbox checked for this field?
// (if there is a value, we ignore the Null checkbox: this could
// be possible if Javascript is disabled in the browser)
if (isset($me_fields_null[$key])
&& $val == "''") {
$val = 'NULL';
}
// The Null checkbox was unchecked for this field
if (empty($val) && isset($me_fields_null_prev[$key]) && ! isset($me_fields_null[$key])) {
$val = "''";
}
} // end else (field value in the form)
unset($type, $f);
?>
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