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[phpmyadmin.git] / libraries / tbl_replace_fields.inc.php
blobb408e6c0b3be83c5adee48ddd661dbc5655de37a
1 <?php
2 /* vim: set expandtab sw=4 ts=4 sts=4: */
3 /**
4 * handle field values (possibly uploaded from a file)
6 * original if-clause checked, whether input was stored in a possible
7 * fields_upload_XX var. Now check, if the field is set. If it is empty or a
8 * malicious file, do not alter fields contents. If an empty or invalid file is
9 * specified, the binary data gets deleter. Maybe a nice new text-variable is
10 * appropriate to document this behaviour.
12 * security cautions! You could trick the form and submit any file the
13 * webserver has access to for upload to a binary field. Shouldn't be that easy! ;)
15 * default is to advance to the field-value parsing. Will only be set to
16 * true when a binary file is uploaded, thus bypassing further manipulation of $val.
18 * note: grab_globals has extracted the fields from _FILES or HTTP_POST_FILES
21 * @package phpMyAdmin
23 if (! defined('PHPMYADMIN')) {
24 exit;
27 /**
28 * do not import request variable into global scope
30 if (! defined('PMA_NO_VARIABLES_IMPORT')) {
31 define('PMA_NO_VARIABLES_IMPORT', true);
33 /**
34 * Gets some core libraries
36 require_once './libraries/common.inc.php';
37 require_once './libraries/File.class.php';
39 $file_to_insert = new PMA_File();
40 $file_to_insert->checkTblChangeForm($key, $rownumber);
42 $possibly_uploaded_val = $file_to_insert->getContent();
44 if ($file_to_insert->isError()) {
45 $message .= $file_to_insert->getError();
47 $file_to_insert->cleanUp();
49 if (false !== $possibly_uploaded_val) {
50 $val = $possibly_uploaded_val;
51 } else {
53 // f i e l d v a l u e i n t h e f o r m
55 if (isset($me_fields_type[$key])) {
56 $type = $me_fields_type[$key];
57 } else {
58 $type = '';
61 // $key contains the md5() of the fieldname
62 if (0 === strlen($val) && $type != 'protected') {
63 // best way to avoid problems in strict mode (works also in non-strict mode)
64 if (isset($me_auto_increment) && isset($me_auto_increment[$key])) {
65 $val = 'NULL';
66 } else {
67 $val = "''";
69 } elseif ($type == 'set') {
70 if (! empty($_REQUEST['fields']['multi_edit'][$rownumber][$key])) {
71 $val = implode(',', $_REQUEST['fields']['multi_edit'][$rownumber][$key]);
72 $val = "'" . PMA_sqlAddSlashes($val) . "'";
74 } elseif ($type == 'protected') {
75 // here we are in protected mode (asked in the config)
76 // so tbl_change has put this special value in the
77 // fields array, so we do not change the field value
78 // but we can still handle field upload
80 // when in UPDATE mode, do not alter field's contents. When in INSERT
81 // mode, insert empty field because no values were submitted. If protected
82 // blobs where set, insert original fields content.
83 if (! empty($prot_row[$me_fields_name[$key]])) {
84 $val = '0x' . bin2hex($prot_row[$me_fields_name[$key]]);
85 } else {
86 $val = '';
88 } elseif ($type == 'bit') {
89 $val = preg_replace('/[^01]/', '0', $val);
90 $val = "b'" . PMA_sqlAddSlashes($val) . "'";
91 } elseif (! (($type == 'datetime' || $type == 'timestamp') && $val == 'CURRENT_TIMESTAMP')) {
92 $val = "'" . PMA_sqlAddSlashes($val) . "'";
95 // Was the Null checkbox checked for this field?
96 // (if there is a value, we ignore the Null checkbox: this could
97 // be possible if Javascript is disabled in the browser)
98 if (! empty($me_fields_null[$key])
99 && ($val == "''" || $val == '')) {
100 $val = 'NULL';
103 // The Null checkbox was unchecked for this field
104 if (empty($val) && ! empty($me_fields_null_prev[$key]) && ! isset($me_fields_null[$key])) {
105 $val = "''";
107 } // end else (field value in the form)
108 unset($type);