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General code safety: validate input and escape SQL strings in common_relative_profile()

This commit is contained in:
Brion Vibber 2010-11-29 16:44:01 -08:00
parent e03d2584aa
commit 3f0557aa8e
1 changed files with 8 additions and 5 deletions
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13
lib/util.php
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@ -1118,17 +1118,20 @@ function common_group_link($sender_id, $nickname)
*
* @param <type> $sender the user or profile in whose context we're looking
* @param string $nickname validated nickname of
* @param <type> $dt unused mystery parameter.
* @param <type> $dt unused mystery parameter; in Notice reply-to handling a timestamp is passed.
*
* @return Profile or null
*/
function common_relative_profile($sender, $nickname, $dt=null)
{
// Will throw exception on invalid input.
$nickname = Nickname::normalize($nickname);
// Try to find profiles this profile is subscribed to that have this nickname
$recipient = new Profile();
// XXX: use a join instead of a subquery
$recipient->whereAdd('EXISTS (SELECT subscribed from subscription where subscriber = '.$sender->id.' and subscribed = id)', 'AND');
$recipient->whereAdd("nickname = '" . trim($nickname) . "'", 'AND');
$recipient->whereAdd('EXISTS (SELECT subscribed from subscription where subscriber = '.intval($sender->id).' and subscribed = id)', 'AND');
$recipient->whereAdd("nickname = '" . $recipient->escape($nickname) . "'", 'AND');
if ($recipient->find(true)) {
// XXX: should probably differentiate between profiles with
// the same name by date of most recent update
@ -1137,8 +1140,8 @@ function common_relative_profile($sender, $nickname, $dt=null)
// Try to find profiles that listen to this profile and that have this nickname
$recipient = new Profile();
// XXX: use a join instead of a subquery
$recipient->whereAdd('EXISTS (SELECT subscriber from subscription where subscribed = '.$sender->id.' and subscriber = id)', 'AND');
$recipient->whereAdd("nickname = '" . trim($nickname) . "'", 'AND');
$recipient->whereAdd('EXISTS (SELECT subscriber from subscription where subscribed = '.intval($sender->id).' and subscriber = id)', 'AND');
$recipient->whereAdd("nickname = '" . $recipient->escape($nickname) . "'", 'AND');
if ($recipient->find(true)) {
// XXX: should probably differentiate between profiles with
// the same name by date of most recent update