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<?php
// Creates a small random string for validating moderators' cookies
function mkhash($length=12) {
// The method here isn't really important,
// but I think this generates a relatively
// unique string that looks cool.
// If you choose to change this, make sure it cannot include a ':' character.
return substr(base64_encode(sha1(rand() . time(), true)), 0, $length);
}
function login($username, $password, $makehash=true) {
global $sql, $mod;
// SHA1 password
if($makehash) {
$password = sha1($password);
}
$res = mysql_query(sprintf(
"SELECT `id`,`type` FROM `mods` WHERE `username` = '%s' AND `password` = '%s' LIMIT 1",
mysql_real_escape_string($username),
$password
), $sql) or error(mysql_error($sql));
if($user = mysql_fetch_array($res)) {
return $mod = Array(
'id' => $user['id'],
'type' => $user['type'],
'username' => $username,
'password' => $password,
'hash' => isset($_SESSION['mod']['hash']) ? $_SESSION['mod']['hash'] : mkhash()
);
} else return false;
}
function setCookies() {
global $mod;
if(!$mod) error('setCookies() was called for a non-moderator!');
// MOD_COOKIE contains username:hash
setcookie(MOD_COOKIE, $mod['username'] . ':' . $mod['hash'], time()+COOKIE_EXPIRE, JAIL_COOKIES?ROOT:'/', null, false, true);
// Put $mod in the session
$_SESSION['mod'] = $mod;
// Lock sessions to IP addresses
if(MOD_LOCK_IP)
$_SESSION['mod']['ip'] = $_SERVER['REMOTE_ADDR'];
}
function destroyCookies() {
// Delete the cookies
setcookie(MOD_COOKIE, 'deleted', time()-COOKIE_EXPIRE, JAIL_COOKIES?ROOT:'/', null, false, true);
// Unset the session
unset($_SESSION['mod']);
}
if(isset($_COOKIE['mod']) && isset($_SESSION['mod']) && is_array($_SESSION['mod'])) {
// Should be username:session hash
$cookie = explode(':', $_COOKIE['mod']);
if(count($cookie) != 2) {
destroyCookies();
error(ERROR_MALFORMED);
}
// Validate session
if( $cookie[0] != $_SESSION['mod']['username'] ||
$cookie[1] != $_SESSION['mod']['hash']) {
// Malformed cookies
destroyCookies();
error(ERROR_MALFORMED);
}
// Open connection
sql_open();
// Check username/password
if(!login($_SESSION['mod']['username'], $_SESSION['mod']['password'], false)) {
destroyCookies();
error(ERROR_INVALIDAFTER);
}
}
// Generates a <ul> element with a list of linked
// boards and their subtitles.
function ulBoards() {
global $mod;
$body = '<ul>';
// List of boards
$boards = listBoards();
foreach($boards as &$b) {
$body .= '<li>' .
'<a href="?/' .
sprintf(BOARD_PATH, $b['uri']) . FILE_INDEX .
'">' .
sprintf(BOARD_ABBREVIATION, $b['uri']) .
'</a> - ' .
$b['title'] .
(isset($b['subtitle']) ? '<span class="unimportant"> — ' . $b['subtitle'] . '</span>' : '') .
'</li>';
}
if($mod['type'] == MOD_ADMIN) {
$body .= '<li style="margin-top:15px;"><a href="?/new"><strong>Create new board</strong></a></li>';
}
return $body . '</ul>';
}
function form_newBoard() {
return '<fieldset><legend>New board</legend>' .
'<form action="?/new" method="post">' .
'<table>' .
'<tr>' .
'<th><label for="board">URI:</label></th>' .
'<td><input type="text" name="uri" id="board" size="3" maxlength="8" />' .
' <span class="unimportant">(eg. "b"; "mu")</span>' .
'</tr>' .
'<tr>' .
'<th><label for="title">Title:</label></th>' .
'<td><input type="text" name="title" id="title" size="15" maxlength="20" />' .
' <span class="unimportant">(eg. "Random")</span>' .
'</tr>' .
'<tr>' .
'<th><label for="subtitle">Subtitle:</label></th>' .
'<td><input type="text" name="subtitle" id="subtitle" size="20" maxlength="40" />' .
' <span class="unimportant">(optional)</span>' .
'</tr>' .
'<tr>' .
'<td></td>' .
'<td><input name="new_board" type="submit" value="New Board" /></td>' .
'</tr>' .
'</table>' .
'</form>' .
'</fieldset>';
}
?>
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