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authorFriendika <info@friendika.com>2011-03-24 15:45:27 -0700
committerFriendika <info@friendika.com>2011-03-24 15:45:27 -0700
commit6bc5d6f17b9d86d909cf43cde0a399b17c46bbf5 (patch)
treea960695183f23f9267e56079395198a40fb72b06 /mod
parent067626380db6d5ed71d68bd91481ff51cfa76915 (diff)
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repair duplicate nickname accounts caused by race condition
Diffstat (limited to 'mod')
-rw-r--r--mod/register.php18
1 files changed, 18 insertions, 0 deletions
diff --git a/mod/register.php b/mod/register.php
index 95e9d581f..06ed1e0f1 100644
--- a/mod/register.php
+++ b/mod/register.php
@@ -199,6 +199,24 @@ function register_post(&$a) {
return;
}
+ /**
+ * if somebody clicked submit twice very quickly, they could end up with two accounts
+ * due to race condition. Remove this one.
+ */
+
+ $r = q("SELECT `uid` FROM `user`
+ WHERE `nickname` = '%s' ",
+ dbesc($nickname)
+ );
+ if((count($r) > 1) && $newuid) {
+ $err .= t('Nickname is already registered. Please choose another.') . EOL;
+ q("DELETE FROM `user` WHERE `uid` = %d LIMIT 1",
+ intval($newuid)
+ );
+ notice ($err);
+ return;
+ }
+
if(x($newuid) !== false) {
$r = q("INSERT INTO `profile` ( `uid`, `profile-name`, `is-default`, `name`, `photo`, `thumb`, `publish`, `net-publish` )
VALUES ( %d, '%s', %d, '%s', '%s', '%s', %d, %d ) ",