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move antibot functions

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This commit is contained in:
h00j 2021-02-13 21:14:06 +01:00
parent d5e8747a19
commit 908b843854
2 changed files with 91 additions and 91 deletions
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91
inc/anti-bot.php
View File

@ -189,94 +189,3 @@ class AntiBot {
return sha1($hash . $this->salt); return sha1($hash . $this->salt);
} }
} }
function _create_antibot($board, $thread) {
global $config, $purged_old_antispam;
$antibot = new AntiBot(array($board, $thread));
if (!isset($purged_old_antispam)) {
$purged_old_antispam = true;
query('DELETE FROM ``antispam`` WHERE `expires` < UNIX_TIMESTAMP()') or error(db_error());
}
if ($thread)
$query = prepare('UPDATE ``antispam`` SET `expires` = UNIX_TIMESTAMP() + :expires WHERE `board` = :board AND `thread` = :thread AND `expires` IS NULL');
else
$query = prepare('UPDATE ``antispam`` SET `expires` = UNIX_TIMESTAMP() + :expires WHERE `board` = :board AND `thread` IS NULL AND `expires` IS NULL');
$query->bindValue(':board', $board);
if ($thread)
$query->bindValue(':thread', $thread);
$query->bindValue(':expires', $config['spam']['hidden_inputs_expire']);
$query->execute() or error(db_error($query));
$query = prepare('INSERT INTO ``antispam`` VALUES (:board, :thread, :hash, UNIX_TIMESTAMP(), NULL, 0)');
$query->bindValue(':board', $board);
$query->bindValue(':thread', $thread);
$query->bindValue(':hash', $antibot->hash());
$query->execute() or error(db_error($query));
return $antibot;
}
function checkSpam(array $extra_salt = array()) {
global $config, $pdo;
if (!isset($_POST['hash']))
return true;
$hash = $_POST['hash'];
if (!empty($extra_salt)) {
// create a salted hash of the "extra salt"
$extra_salt = implode(':', $extra_salt);
} else {
$extra_salt = '';
}
// Reconsturct the $inputs array
$inputs = array();
foreach ($_POST as $name => $value) {
if (in_array($name, $config['spam']['valid_inputs']))
continue;
$inputs[$name] = $value;
}
// Sort the inputs in alphabetical order (A-Z)
ksort($inputs);
$_hash = '';
// Iterate through each input
foreach ($inputs as $name => $value) {
$_hash .= $name . '=' . $value;
}
// Add a salt to the hash
$_hash .= $config['cookies']['salt'];
// Use SHA1 for the hash
$_hash = sha1($_hash . $extra_salt);
if ($hash != $_hash)
return true;
$query = prepare('SELECT `passed` FROM ``antispam`` WHERE `hash` = :hash');
$query->bindValue(':hash', $hash);
$query->execute() or error(db_error($query));
if ((($passed = $query->fetchColumn(0)) === false) || ($passed > $config['spam']['hidden_inputs_max_pass'])) {
// there was no database entry for this hash. most likely expired.
return true;
}
return $hash;
}
function incrementSpamHash($hash) {
$query = prepare('UPDATE ``antispam`` SET `passed` = `passed` + 1 WHERE `hash` = :hash');
$query->bindValue(':hash', $hash);
$query->execute() or error(db_error($query));
}

91
inc/functions.php
View File

@ -1641,6 +1641,97 @@ function checkMute() {
} }
} }
function _create_antibot($board, $thread) {
global $config, $purged_old_antispam;
$antibot = new AntiBot(array($board, $thread));
if (!isset($purged_old_antispam)) {
$purged_old_antispam = true;
query('DELETE FROM ``antispam`` WHERE `expires` < UNIX_TIMESTAMP()') or error(db_error());
}
if ($thread)
$query = prepare('UPDATE ``antispam`` SET `expires` = UNIX_TIMESTAMP() + :expires WHERE `board` = :board AND `thread` = :thread AND `expires` IS NULL');
else
$query = prepare('UPDATE ``antispam`` SET `expires` = UNIX_TIMESTAMP() + :expires WHERE `board` = :board AND `thread` IS NULL AND `expires` IS NULL');
$query->bindValue(':board', $board);
if ($thread)
$query->bindValue(':thread', $thread);
$query->bindValue(':expires', $config['spam']['hidden_inputs_expire']);
$query->execute() or error(db_error($query));
$query = prepare('INSERT INTO ``antispam`` VALUES (:board, :thread, :hash, UNIX_TIMESTAMP(), NULL, 0)');
$query->bindValue(':board', $board);
$query->bindValue(':thread', $thread);
$query->bindValue(':hash', $antibot->hash());
$query->execute() or error(db_error($query));
return $antibot;
}
function checkSpam(array $extra_salt = array()) {
global $config, $pdo;
if (!isset($_POST['hash']))
return true;
$hash = $_POST['hash'];
if (!empty($extra_salt)) {
// create a salted hash of the "extra salt"
$extra_salt = implode(':', $extra_salt);
} else {
$extra_salt = '';
}
// Reconsturct the $inputs array
$inputs = array();
foreach ($_POST as $name => $value) {
if (in_array($name, $config['spam']['valid_inputs']))
continue;
$inputs[$name] = $value;
}
// Sort the inputs in alphabetical order (A-Z)
ksort($inputs);
$_hash = '';
// Iterate through each input
foreach ($inputs as $name => $value) {
$_hash .= $name . '=' . $value;
}
// Add a salt to the hash
$_hash .= $config['cookies']['salt'];
// Use SHA1 for the hash
$_hash = sha1($_hash . $extra_salt);
if ($hash != $_hash)
return true;
$query = prepare('SELECT `passed` FROM ``antispam`` WHERE `hash` = :hash');
$query->bindValue(':hash', $hash);
$query->execute() or error(db_error($query));
if ((($passed = $query->fetchColumn(0)) === false) || ($passed > $config['spam']['hidden_inputs_max_pass'])) {
// there was no database entry for this hash. most likely expired.
return true;
}
return $hash;
}
function incrementSpamHash($hash) {
$query = prepare('UPDATE ``antispam`` SET `passed` = `passed` + 1 WHERE `hash` = :hash');
$query->bindValue(':hash', $hash);
$query->execute() or error(db_error($query));
}
function buildIndex($global_api = "yes") { function buildIndex($global_api = "yes") {
global $board, $config, $build_pages; global $board, $config, $build_pages;