Source code of Leftypol imageboard
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321 lines
9.5 KiB

<?php
require 'inc/lib/IP/Lifo/IP/IP.php';
require 'inc/lib/IP/Lifo/IP/BC.php';
require 'inc/lib/IP/Lifo/IP/CIDR.php';
use Lifo\IP\CIDR;
class Bans {
static public function range_to_string($mask) {
list($ipstart, $ipend) = $mask;
if (!isset($ipend) || $ipend === false) {
// Not a range. Single IP address.
$ipstr = inet_ntop($ipstart);
return $ipstr;
}
if (strlen($ipstart) != strlen($ipend))
return '???'; // What the fuck are you doing, son?
$range = CIDR::range_to_cidr(inet_ntop($ipstart), inet_ntop($ipend));
if ($range !== false)
return $range;
return '???';
}
private static function calc_cidr($mask) {
$cidr = new CIDR($mask);
$range = $cidr->getRange();
return array(inet_pton($range[0]), inet_pton($range[1]));
}
public static function parse_time($str) {
if (empty($str))
return false;
if (($time = @strtotime($str)) !== false)
return $time;
if (!preg_match('/^((\d+)\s?ye?a?r?s?)?\s?+((\d+)\s?mon?t?h?s?)?\s?+((\d+)\s?we?e?k?s?)?\s?+((\d+)\s?da?y?s?)?((\d+)\s?ho?u?r?s?)?\s?+((\d+)\s?mi?n?u?t?e?s?)?\s?+((\d+)\s?se?c?o?n?d?s?)?$/', $str, $matches))
return false;
$expire = 0;
if (isset($matches[2])) {
// Years
$expire += (int)$matches[2]*60*60*24*365;
}
if (isset($matches[4])) {
// Months
$expire += (int)$matches[4]*60*60*24*30;
}
if (isset($matches[6])) {
// Weeks
$expire += (int)$matches[6]*60*60*24*7;
}
if (isset($matches[8])) {
// Days
$expire += (int)$matches[8]*60*60*24;
}
if (isset($matches[10])) {
// Hours
$expire += (int)$matches[10]*60*60;
}
if (isset($matches[12])) {
// Minutes
$expire += (int)$matches[12]*60;
}
if (isset($matches[14])) {
// Seconds
$expire += (int)$matches[14];
}
return time() + $expire;
}
static public function parse_range($mask) {
$ipstart = false;
$ipend = false;
if (preg_match('@^(\d{1,3}\.){1,3}([\d*]{1,3})[email protected]', $mask) && substr_count($mask, '*') == 1) {
// IPv4 wildcard mask
$parts = explode('.', $mask);
$ipv4 = '';
foreach ($parts as $part) {
if ($part == '*') {
$ipstart = inet_pton($ipv4 . '0' . str_repeat('.0', 3 - substr_count($ipv4, '.')));
$ipend = inet_pton($ipv4 . '255' . str_repeat('.255', 3 - substr_count($ipv4, '.')));
break;
} elseif(($wc = strpos($part, '*')) !== false) {
$ipstart = inet_pton($ipv4 . substr($part, 0, $wc) . '0' . str_repeat('.0', 3 - substr_count($ipv4, '.')));
$ipend = inet_pton($ipv4 . substr($part, 0, $wc) . '9' . str_repeat('.255', 3 - substr_count($ipv4, '.')));
break;
}
$ipv4 .= "$part.";
}
} elseif (preg_match('@^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}/\[email protected]', $mask)) {
list($ipv4, $bits) = explode('/', $mask);
if ($bits > 32)
return false;
list($ipstart, $ipend) = self::calc_cidr($mask);
} elseif (preg_match('@^[:a-z\d]+/\[email protected]', $mask)) {
list($ipv6, $bits) = explode('/', $mask);
if ($bits > 128)
return false;
list($ipstart, $ipend) = self::calc_cidr($mask);
} else {
if (($ipstart = @inet_pton($mask)) === false)
return false;
}
return array($ipstart, $ipend);
}
static public function find($ip, $board = false, $get_mod_info = false) {
global $config;
$query = prepare('SELECT ``bans``.*' . ($get_mod_info ? ', `username`' : '') . ' FROM ``bans``
' . ($get_mod_info ? 'LEFT JOIN ``mods`` ON ``mods``.`id` = `creator`' : '') . '
8 years ago
WHERE
(' . ($board !== false ? '(`board` IS NULL OR `board` = :board) AND' : '') . '
8 years ago
(`ipstart` = :ip OR (:ip >= `ipstart` AND :ip <= `ipend`)))
ORDER BY `expires` IS NULL, `expires` DESC');
if ($board !== false)
$query->bindValue(':board', $board, PDO::PARAM_STR);
$query->bindValue(':ip', inet_pton($ip));
$query->execute() or error(db_error($query));
$ban_list = array();
while ($ban = $query->fetch(PDO::FETCH_ASSOC)) {
if ($ban['expires'] && ($ban['seen'] || !$config['require_ban_view']) && $ban['expires'] < time()) {
self::delete($ban['id']);
} else {
if ($ban['post'])
$ban['post'] = json_decode($ban['post'], true);
$ban['mask'] = self::range_to_string(array($ban['ipstart'], $ban['ipend']));
$ban_list[] = $ban;
}
}
return $ban_list;
}
static public function stream_json($out = false, $filter_ips = false, $filter_staff = false, $board_access = false, $hide_regexes = []) {
$query = query("SELECT ``bans``.*, `username` FROM ``bans``
LEFT JOIN ``mods`` ON ``mods``.`id` = `creator`
ORDER BY `created` DESC") or error(db_error());
$bans = $query->fetchAll(PDO::FETCH_ASSOC);
if ($board_access && $board_access[0] == '*') $board_access = false;
$out ? fputs($out, "[") : print("[");
$end = end($bans);
foreach ($bans as &$ban) {
$ban['mask'] = self::range_to_string(array($ban['ipstart'], $ban['ipend']));
$hide_message = false;
foreach ($hide_regexes as $regex) {
if(preg_match($regex, $ban['reason'])) {
$hide_message = true;
break;
}
}
if ($ban['post'] && !$hide_message) {
$post = json_decode($ban['post']);
$ban['message'] = isset($post->body) ? $post->body : 0;
}
unset($ban['ipstart'], $ban['ipend'], $ban['post'], $ban['creator']);
if ($board_access === false || in_array ($ban['board'], $board_access)) {
$ban['access'] = true;
}
if (filter_var($ban['mask'], FILTER_VALIDATE_IP) !== false) {
$ban['single_addr'] = true;
}
if ($filter_staff || ($board_access !== false && !in_array($ban['board'], $board_access))) {
$ban['username'] = '?';
}
if ($filter_ips || ($board_access !== false && !in_array($ban['board'], $board_access))) {
@list($ban['mask'], $subnet) = explode("/", $ban['mask']);
$ban['mask'] = preg_split("/[\.:]/", $ban['mask']);
$ban['mask'] = array_slice($ban['mask'], 0, 2);
$ban['mask'] = implode(".", $ban['mask']);
$ban['mask'] .= ".x.x";
if (isset ($subnet)) {
$ban['mask'] .= "/$subnet";
}
$ban['masked'] = true;
}
$json = json_encode($ban);
$out ? fputs($out, $json) : print($json);
if ($ban['id'] != $end['id']) {
$out ? fputs($out, ",") : print(",");
}
}
$out ? fputs($out, "]") : print("]");
}
static public function seen($ban_id) {
$query = query("UPDATE ``bans`` SET `seen` = 1 WHERE `id` = " . (int)$ban_id) or error(db_error());
rebuildThemes('bans');
}
static public function purge() {
$query = query("DELETE FROM ``bans`` WHERE `expires` IS NOT NULL AND `expires` < " . time() . " AND `seen` = 1") or error(db_error());
rebuildThemes('bans');
}
static public function delete($ban_id, $modlog = false, $boards = false, $dont_rebuild = false) {
global $config;
if ($boards && $boards[0] == '*') $boards = false;
if ($modlog) {
$query = query("SELECT `ipstart`, `ipend`, `board` FROM ``bans`` WHERE `id` = " . (int)$ban_id) or error(db_error());
if (!$ban = $query->fetch(PDO::FETCH_ASSOC)) {
// Ban doesn't exist
return false;
}
if ($boards !== false && !in_array($ban['board'], $boards))
error($config['error']['noaccess']);
$mask = self::range_to_string(array($ban['ipstart'], $ban['ipend']));
modLog("Removed ban #{$ban_id} for " .
(filter_var($mask, FILTER_VALIDATE_IP) !== false ? "<a href=\"?/IP/$mask\">$mask</a>" : $mask));
}
query("DELETE FROM ``bans`` WHERE `id` = " . (int)$ban_id) or error(db_error());
if (!$dont_rebuild) rebuildThemes('bans');
return true;
}
static public function new_ban($mask, $reason, $length = false, $ban_board = false, $mod_id = false, $post = false) {
global $mod, $pdo, $board;
if ($mod_id === false) {
$mod_id = isset($mod['id']) ? $mod['id'] : -1;
}
$range = self::parse_range($mask);
$mask = self::range_to_string($range);
$query = prepare("INSERT INTO ``bans`` VALUES (NULL, :ipstart, :ipend, :time, :expires, :board, :mod, :reason, 0, :post)");
$query->bindValue(':ipstart', $range[0]);
if ($range[1] !== false && $range[1] != $range[0])
$query->bindValue(':ipend', $range[1]);
else
$query->bindValue(':ipend', null, PDO::PARAM_NULL);
$query->bindValue(':mod', $mod_id);
$query->bindValue(':time', time());
if ($reason !== '') {
$reason = escape_markup_modifiers($reason);
markup($reason);
$query->bindValue(':reason', $reason);
} else
$query->bindValue(':reason', null, PDO::PARAM_NULL);
if ($length) {
if (is_int($length) || ctype_digit($length)) {
$length = time() + $length;
} else {
$length = self::parse_time($length);
}
$query->bindValue(':expires', $length);
} else {
$query->bindValue(':expires', null, PDO::PARAM_NULL);
}
if ($ban_board)
$query->bindValue(':board', $ban_board);
else
$query->bindValue(':board', null, PDO::PARAM_NULL);
if ($post) {
$post['board'] = $board['uri'];
$query->bindValue(':post', json_encode($post));
} else
$query->bindValue(':post', null, PDO::PARAM_NULL);
$query->execute() or error(db_error($query));
if (isset($mod['id']) && $mod['id'] == $mod_id) {
modLog('Created a new ' .
($length > 0 ? preg_replace('/^(\d+) (\w+?)s?$/', '$1-$2', until($length)) : 'permanent') .
' ban on ' .
9 years ago
($ban_board ? '/' . $ban_board . '/' : 'all boards') .
' for ' .
(filter_var($mask, FILTER_VALIDATE_IP) !== false ? "<a href=\"?/IP/$mask\">$mask</a>" : $mask) .
' (<small>#' . $pdo->lastInsertId() . '</small>)' .
' with ' . ($reason ? 'reason: ' . utf8tohtml($reason) . '' : 'no reason'));
}
rebuildThemes('bans');
return $pdo->lastInsertId();
}
}