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prevent re-registrations using a deleted username - not an issue with Friendica but could create a serious privacy issue with federated platforms

pull/157/head
friendica 10 years ago
parent
commit
ebdf0ee99e
  1. 2
      boot.php
  2. 6
      database.sql
  3. 6
      include/Contact.php
  4. 10
      mod/register.php
  5. 5
      mod/regmod.php
  6. 11
      update.php

2
boot.php

@ -11,7 +11,7 @@ require_once('include/cache.php');
define ( 'FRIENDICA_PLATFORM', 'Friendica');
define ( 'FRIENDICA_VERSION', '2.3.1288' );
define ( 'DFRN_PROTOCOL_VERSION', '2.23' );
define ( 'DB_UPDATE_VERSION', 1132 );
define ( 'DB_UPDATE_VERSION', 1133 );
define ( 'EOL', "<br />\r\n" );
define ( 'ATOM_TIME', 'Y-m-d\TH:i:s\Z' );

6
database.sql

@ -861,3 +861,9 @@ INDEX ( `term` )
) ENGINE = MyISAM DEFAULT CHARSET=utf8;
CREATE TABLE IF NOT EXISTS `userd` (
`id` INT NOT NULL AUTO_INCREMENT PRIMARY KEY ,
`username` CHAR( 255 ) NOT NULL,
INDEX ( `username` )
) ENGINE = MyISAM DEFAULT CHARSET=utf8;

6
include/Contact.php

@ -15,6 +15,12 @@ function user_remove($uid) {
call_hooks('remove_user',$r[0]);
// save username (actually the nickname as it is guaranteed
// unique), so it cannot be re-registered in the future.
q("insert into userd ( username ) values ( '%s' )",
$r[0]['nickname']
);
q("DELETE FROM `contact` WHERE `uid` = %d", intval($uid));
q("DELETE FROM `group` WHERE `uid` = %d", intval($uid));

10
mod/register.php

@ -150,6 +150,16 @@ function register_post(&$a) {
if(count($r))
$err .= t('Nickname is already registered. Please choose another.') . EOL;
// Check deleted accounts that had this nickname. Doesn't matter to us,
// but could be a security issue for federated platforms.
$r = q("SELECT * FROM `userd`
WHERE `username` = '%s' LIMIT 1",
dbesc($nickname)
);
if(count($r))
$err .= t('Nickname was once registered here and may not be re-used. Please choose another.') . EOL;
if(strlen($err)) {
notice( $err );
return;

5
mod/regmod.php

@ -64,6 +64,11 @@ function user_allow($hash) {
}
// This does not have to go through user_remove() and save the nickname
// permanently against re-registration, as the person was not yet
// allowed to have friends on this system
function user_deny($hash) {
$register = q("SELECT * FROM `register` WHERE `hash` = '%s' LIMIT 1",

11
update.php

@ -1,6 +1,6 @@
<?php
define( 'UPDATE_VERSION' , 1132 );
define( 'UPDATE_VERSION' , 1133 );
/**
*
@ -1127,3 +1127,12 @@ function update_1131() {
}
function update_1132() {
q("CREATE TABLE IF NOT EXISTS `userd` (
`id` INT NOT NULL AUTO_INCREMENT PRIMARY KEY ,
`username` CHAR( 255 ) NOT NULL,
INDEX ( `username` )
) ENGINE = MYISAM ");
}
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