= 50503) {
return $input; // Assume we're using the utf8mb4 charset
} else {
// MySQL's `utf8` charset only supports up to 3-byte symbols
// Remove anything >= 0x010000
$chars = preg_split('//u', $input, -1, PREG_SPLIT_NO_EMPTY);
$ret = '';
foreach ($chars as $char) {
$o = 0;
$ord = ordutf8($char, $o);
if ($ord >= 0x010000) {
continue;
}
$ret .= $char;
}
return $ret;
}
}
/**
* Download the url's target with curl.
*
* @param string $url Url to the file to download.
* @param int $timeout Request timeout in seconds.
* @param File $fd File descriptor to save the content to.
* @return null|string Returns a string on error.
*/
function download_file_into($url, $timeout, $fd) {
$err = null;
$curl = curl_init();
curl_setopt($curl, CURLOPT_URL, $url);
curl_setopt($curl, CURLOPT_FAILONERROR, true);
curl_setopt($curl, CURLOPT_FOLLOWLOCATION, false);
curl_setopt($curl, CURLOPT_CONNECTTIMEOUT, 5);
curl_setopt($curl, CURLOPT_TIMEOUT, $timeout);
curl_setopt($curl, CURLOPT_USERAGENT, 'Tinyboard');
curl_setopt($curl, CURLOPT_FILE, $fd);
curl_setopt($curl, CURLOPT_PROTOCOLS, CURLPROTO_HTTP | CURLPROTO_HTTPS);
curl_setopt($curl, CURLOPT_IPRESOLVE, CURL_IPRESOLVE_V4);
if (curl_exec($curl) === false) {
$err = curl_error($curl);
}
curl_close($curl);
return $err;
}
/**
* Download a remote file from the given url.
* The file is deleted at shutdown.
*
* @param string $file_url The url to download the file from.
* @param int $request_timeout Timeout to retrieve the file.
* @param array $extra_extensions Allowed file extensions.
* @param string $tmp_dir Temporary directory to save the file into.
* @param array $error_array An array with error codes, used to create exceptions on failure.
* @return array Returns an array describing the file on success.
* @throws Exception on error.
*/
function download_file_from_url($file_url, $request_timeout, $allowed_extensions, $tmp_dir, &$error_array) {
if (!preg_match('@^https?://@', $file_url)) {
throw new InvalidArgumentException($error_array['invalidimg']);
}
if (mb_strpos($file_url, '?') !== false) {
$url_without_params = mb_substr($file_url, 0, mb_strpos($file_url, '?'));
} else {
$url_without_params = $file_url;
}
$extension = strtolower(mb_substr($url_without_params, mb_strrpos($url_without_params, '.') + 1));
if (!in_array($extension, $allowed_extensions)) {
throw new InvalidArgumentException($error_array['unknownext']);
}
$tmp_file = tempnam($tmp_dir, 'url');
function unlink_tmp_file($file) {
@unlink($file);
fatal_error_handler();
}
register_shutdown_function('unlink_tmp_file', $tmp_file);
$fd = fopen($tmp_file, 'w');
$dl_err = download_file_into($fd, $request_timeout, $fd);
fclose($fd);
if ($dl_err !== null) {
throw new Exception($error_array['nomove'] . '
Curl says: ' . $dl_err);
}
return array(
'name' => basename($url_without_params),
'tmp_name' => $tmp_file,
'file_tmp' => true,
'error' => 0,
'size' => filesize($tmp_file)
);
}
/**
* Try extract text from the given image.
*
* @param array $config Instance configuration.
* @param string $img_path The file path to the image.
* @return string|false Returns a string with the extracted text on success (if any).
* @throws RuntimeException Throws if executing tesseract fails.
*/
function ocr_image(array $config, string $img_path): string {
// The default preprocess command is an ImageMagick b/w quantization.
$ret = shell_exec_error(
sprintf($config['tesseract_preprocess_command'], escapeshellarg($img_path))
. ' | tesseract stdin stdout 2>/dev/null'
. $config['tesseract_params']
);
if ($ret === false) {
throw new RuntimeException('Unable to run tesseract');
}
return trim($ret);
}
/**
* Trim an image's EXIF metadata
*
* @param string $img_path The file path to the image.
* @return int The size of the stripped file.
* @throws RuntimeException Throws on IO errors.
*/
function strip_image_metadata(string $img_path): int {
$err = shell_exec_error('exiftool -overwrite_original -ignoreMinorErrors -q -q -all= ' . escapeshellarg($img_path));
if ($err === false) {
throw new RuntimeException('Could not strip EXIF metadata!');
}
clearstatcache(true, $img_path);
$ret = filesize($img_path);
if ($ret === false) {
throw new RuntimeException('Could not calculate file size!');
}
return $ret;
}
/**
* Delete posts in a cyclical thread.
*
* @param string $boardUri The URI of the board.
* @param int $threadId The ID of the thread.
* @param int $cycleLimit The number of most recent posts to retain.
*/
function delete_cyclical_posts(string $boardUri, int $threadId, int $cycleLimit): void
{
$query = prepare(sprintf('
SELECT p.`id`
FROM ``posts_%s`` p
LEFT JOIN (
SELECT `id`
FROM ``posts_%s``
WHERE `thread` = :thread
ORDER BY `id` DESC
LIMIT :limit
) recent_posts ON p.id = recent_posts.id
WHERE p.thread = :thread
AND recent_posts.id IS NULL',
$boardUri, $boardUri
));
$query->bindValue(':thread', $threadId, PDO::PARAM_INT);
$query->bindValue(':limit', $cycleLimit, PDO::PARAM_INT);
$query->execute() or error(db_error($query));
$ids = $query->fetchAll(PDO::FETCH_COLUMN);
foreach ($ids as $id) {
deletePost($id, false);
}
}
/**
* Method handling functions
*/
$dropped_post = false;
// Is it a post coming from NNTP? Let's extract it and pretend it's a normal post.
if (isset($_GET['Newsgroups']) && $config['nntpchan']['enabled']) {
if ($_SERVER['REMOTE_ADDR'] != $config['nntpchan']['trusted_peer']) {
error("NNTPChan: Forbidden. $_SERVER[REMOTE_ADDR] is not a trusted peer");
}
$_POST = array();
$_POST['json_response'] = true;
$headers = json_encode($_GET);
if (!isset ($_GET['Message-Id'])) {
if (!isset ($_GET['Message-ID'])) {
error("NNTPChan: No message ID");
}
else $msgid = $_GET['Message-ID'];
}
else $msgid = $_GET['Message-Id'];
$groups = preg_split("/,\s*/", $_GET['Newsgroups']);
if (count($groups) != 1) {
error("NNTPChan: Messages can go to only one newsgroup");
}
$group = $groups[0];
if (!isset($config['nntpchan']['dispatch'][$group])) {
error("NNTPChan: We don't synchronize $group");
}
$xboard = $config['nntpchan']['dispatch'][$group];
$ref = null;
if (isset ($_GET['References'])) {
$refs = preg_split("/,\s*/", $_GET['References']);
if (count($refs) > 1) {
error("NNTPChan: We don't support multiple references");
}
$ref = $refs[0];
$query = prepare("SELECT `board`,`id` FROM ``nntp_references`` WHERE `message_id` = :ref");
$query->bindValue(':ref', $ref);
$query->execute() or error(db_error($query));
$ary = $query->fetchAll(PDO::FETCH_ASSOC);
if (count($ary) == 0) {
error("NNTPChan: We don't have $ref that $msgid references");
}
$p_id = $ary[0]['id'];
$p_board = $ary[0]['board'];
if ($p_board != $xboard) {
error("NNTPChan: Cross board references not allowed. Tried to reference $p_board on $xboard");
}
$_POST['thread'] = $p_id;
}
$date = isset($_GET['Date']) ? strtotime($_GET['Date']) : time();
list($ct) = explode('; ', $_GET['Content-Type']);
$query = prepare("SELECT COUNT(*) AS `c` FROM ``nntp_references`` WHERE `message_id` = :msgid");
$query->bindValue(":msgid", $msgid);
$query->execute() or error(db_error($query));
$a = $query->fetch(PDO::FETCH_ASSOC);
if ($a['c'] > 0) {
error("NNTPChan: We already have this post. Post discarded.");
}
if ($ct == 'text/plain') {
$content = file_get_contents("php://input");
}
elseif ($ct == 'multipart/mixed' || $ct == 'multipart/form-data') {
_syslog(LOG_INFO, "MM: Files: ".print_r($GLOBALS, true)); // Debug
$content = '';
$newfiles = array();
foreach ($_FILES['attachment']['error'] as $id => $error) {
if ($_FILES['attachment']['type'][$id] == 'text/plain') {
$content .= file_get_contents($_FILES['attachment']['tmp_name'][$id]);
}
elseif ($_FILES['attachment']['type'][$id] == 'message/rfc822') { // Signed message, ignore for now
}
else { // A real attachment :^)
$file = array();
$file['name'] = $_FILES['attachment']['name'][$id];
$file['type'] = $_FILES['attachment']['type'][$id];
$file['size'] = $_FILES['attachment']['size'][$id];
$file['tmp_name'] = $_FILES['attachment']['tmp_name'][$id];
$file['error'] = $_FILES['attachment']['error'][$id];
$newfiles["file$id"] = $file;
}
}
$_FILES = $newfiles;
}
else {
error("NNTPChan: Wrong mime type: $ct");
}
$_POST['subject'] = isset($_GET['Subject']) ? ($_GET['Subject'] == 'None' ? '' : $_GET['Subject']) : '';
$_POST['board'] = $xboard;
if (isset ($_GET['From'])) {
list($name, $mail) = explode(" <", $_GET['From'], 2);
$mail = preg_replace('/>\s+$/', '', $mail);
$_POST['name'] = $name;
//$_POST['email'] = $mail;
$_POST['email'] = '';
}
if (isset ($_GET['X_Sage'])) {
$_POST['email'] = 'sage';
}
$content = preg_replace_callback('/>>([0-9a-fA-F]{6,})/', function($id) use ($xboard) {
$id = $id[1];
$query = prepare("SELECT `board`,`id` FROM ``nntp_references`` WHERE `message_id_digest` LIKE :rule");
$idx = $id . "%";
$query->bindValue(':rule', $idx);
$query->execute() or error(db_error($query));
$ary = $query->fetchAll(PDO::FETCH_ASSOC);
if (count($ary) == 0) {
return ">>>>$id";
}
else {
$ret = array();
foreach ($ary as $v) {
if ($v['board'] != $xboard) {
$ret[] = ">>>/".$v['board']."/".$v['id'];
}
else {
$ret[] = ">>".$v['id'];
}
}
return implode($ret, ", ");
}
}, $content);
$_POST['body'] = $content;
$dropped_post = array(
'date' => $date,
'board' => $xboard,
'msgid' => $msgid,
'headers' => $headers,
'from_nntp' => true,
);
}
elseif (isset($_GET['Newsgroups'])) {
error("NNTPChan: NNTPChan support is disabled");
}
session_start();
if (!isset($_POST['captcha_cookie']) && isset($_SESSION['captcha_cookie'])) {
$_POST['captcha_cookie'] = $_SESSION['captcha_cookie'];
}
if (isset($_POST['delete'])) {
// Delete
if (!isset($_POST['board'], $_POST['password']))
error($config['error']['bot']);
$password = &$_POST['password'];
if ($password == '')
error($config['error']['invalidpassword']);
$delete = array();
foreach ($_POST as $post => $value) {
if (preg_match('/^delete_(\d+)$/', $post, $m)) {
$delete[] = (int)$m[1];
}
}
checkDNSBL();
// Check if board exists
if (!openBoard($_POST['board']))
error($config['error']['noboard']);
if ((!isset($_POST['mod']) || !$_POST['mod']) && $config['board_locked']) {
error("Board is locked");
}
// Check if banned
checkBan($board['uri']);
// Check if deletion enabled
if (!$config['allow_delete'])
error(_('Post deletion is not allowed!'));
if (empty($delete))
error($config['error']['nodelete']);
foreach ($delete as &$id) {
$query = prepare(sprintf("SELECT `id`,`thread`,`time`,`password` FROM ``posts_%s`` WHERE `id` = :id", $board['uri']));
$query->bindValue(':id', $id, PDO::PARAM_INT);
$query->execute() or error(db_error($query));
if ($post = $query->fetch(PDO::FETCH_ASSOC)) {
$thread = false;
if ($config['user_moderation'] && $post['thread']) {
$thread_query = prepare(sprintf("SELECT `time`,`password` FROM ``posts_%s`` WHERE `id` = :id", $board['uri']));
$thread_query->bindValue(':id', $post['thread'], PDO::PARAM_INT);
$thread_query->execute() or error(db_error($query));
$thread = $thread_query->fetch(PDO::FETCH_ASSOC);
}
if ($post['time'] < time() - $config['max_delete_time'] && $config['max_delete_time'] != false) {
error(sprintf($config['error']['delete_too_late'], until($post['time'] + $config['max_delete_time'])));
}
if ($password != '' && $post['password'] != $password && (!$thread || $thread['password'] != $password))
error($config['error']['invalidpassword']);
if ($post['time'] > time() - $config['delete_time'] && (!$thread || $thread['password'] != $password)) {
error(sprintf($config['error']['delete_too_soon'], until($post['time'] + $config['delete_time'])));
}
$ip = $_SERVER['REMOTE_ADDR'];
if (isset($_POST['file'])) {
// Delete just the file
deleteFile($id);
modLog("User at $ip deleted file from their own post #$id");
} else {
// Delete entire post
deletePost($id);
modLog("User at $ip deleted their own post #$id");
}
_syslog(LOG_INFO, 'Deleted post: ' .
'/' . $board['dir'] . $config['dir']['res'] . link_for($post) . ($post['thread'] ? '#' . $id : '')
);
}
}
buildIndex();
$is_mod = isset($_POST['mod']) && $_POST['mod'];
$root = $is_mod ? $config['root'] . $config['file_mod'] . '?/' : $config['root'];
if (!isset($_POST['json_response'])) {
header('Location: ' . $root . $board['dir'] . $config['file_index'], true, $config['redirect_http']);
} else {
header('Content-Type: text/json');
echo json_encode(array('success' => true));
}
// We are already done, let's continue our heavy-lifting work in the background (if we run off FastCGI)
if (function_exists('fastcgi_finish_request'))
@fastcgi_finish_request();
rebuildThemes('post-delete', $board['uri']);
} elseif (isset($_POST['report'])) {
if (!isset($_POST['board'], $_POST['reason']))
error($config['error']['bot']);
$report = array();
foreach ($_POST as $post => $value) {
if (preg_match('/^delete_(\d+)$/', $post, $m)) {
$report[] = (int)$m[1];
}
}
checkDNSBL();
// Check if board exists
if (!openBoard($_POST['board']))
error($config['error']['noboard']);
if ((!isset($_POST['mod']) || !$_POST['mod']) && $config['board_locked']) {
error("Board is locked");
}
// Check if banned
checkBan($board['uri']);
if (empty($report))
error($config['error']['noreport']);
if (count($report) > $config['report_limit'])
error($config['error']['toomanyreports']);
if ($config['report_captcha'] && !isset($_POST['captcha_text'], $_POST['captcha_cookie'])) {
error($config['error']['bot']);
}
if ($config['report_captcha']) {
$ch = curl_init($config['domain'].'/'.$config['captcha']['provider_check'] . "?" . http_build_query([
'mode' => 'check',
'text' => $_POST['captcha_text'],
'extra' => $config['captcha']['extra'],
'cookie' => $_POST['captcha_cookie']
]));
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
$resp = curl_exec($ch);
if ($resp !== '1') {
error($config['error']['captcha']);
}
}
$reason = escape_markup_modifiers($_POST['reason']);
markup($reason);
if (mb_strlen($reason) > $config['report_max_length']) {
error($config['error']['toolongreport']);
}
foreach ($report as &$id) {
$query = prepare(sprintf("SELECT `id`, `thread` FROM ``posts_%s`` WHERE `id` = :id", $board['uri']));
$query->bindValue(':id', $id, PDO::PARAM_INT);
$query->execute() or error(db_error($query));
$post = $query->fetch(PDO::FETCH_ASSOC);
if ($post === false) {
if ($config['syslog']) {
_syslog(LOG_INFO, "Failed to report non-existing post #{$id} in {$board['dir']}");
}
error($config['error']['nopost']);
}
$error = event('report', array('ip' => $_SERVER['REMOTE_ADDR'], 'board' => $board['uri'], 'post' => $post, 'reason' => $reason, 'link' => link_for($post)));
if ($error) {
error($error);
}
if ($config['syslog'])
_syslog(LOG_INFO, 'Reported post: ' .
'/' . $board['dir'] . $config['dir']['res'] . link_for($post) . ($post['thread'] ? '#' . $id : '') .
' for "' . $reason . '"'
);
$query = prepare("INSERT INTO ``reports`` VALUES (NULL, :time, :ip, :board, :post, :reason)");
$query->bindValue(':time', time(), PDO::PARAM_INT);
$query->bindValue(':ip', $_SERVER['REMOTE_ADDR'], PDO::PARAM_STR);
$query->bindValue(':board', $board['uri'], PDO::PARAM_STR);
$query->bindValue(':post', $id, PDO::PARAM_INT);
$query->bindValue(':reason', $reason, PDO::PARAM_STR);
$query->execute() or error(db_error($query));
}
$is_mod = isset($_POST['mod']) && $_POST['mod'];
$root = $is_mod ? $config['root'] . $config['file_mod'] . '?/' : $config['root'];
if (!isset($_POST['json_response'])) {
$index = $root . $board['dir'] . $config['file_index'];
echo Element($config['file_page_template'], array('config' => $config, 'body' => '', 'title' => _('Report submitted!')));
} else {
header('Content-Type: text/json');
echo json_encode(array('success' => true));
}
} elseif (isset($_POST['post']) || $dropped_post) {
if (!isset($_POST['body'], $_POST['board']) && !$dropped_post)
error($config['error']['bot']);
$post = array('board' => $_POST['board'], 'files' => array());
// Check if board exists
if (!openBoard($post['board']))
error($config['error']['noboard']);
if ((!isset($_POST['mod']) || !$_POST['mod']) && $config['board_locked']) {
error("Board is locked");
}
if (!isset($_POST['name']))
$_POST['name'] = $config['anonymous'];
if (!isset($_POST['email']))
$_POST['email'] = '';
if (!isset($_POST['subject']))
$_POST['subject'] = '';
if (!isset($_POST['password']))
$_POST['password'] = '';
if (isset($_POST['thread'])) {
$post['op'] = false;
$post['thread'] = round($_POST['thread']);
} else
$post['op'] = true;
if (!$dropped_post) {
if ($config['simple_spam'] && $post['op']) {
if (!isset($_POST['simple_spam']) || strtolower($config['simple_spam']['answer']) != strtolower($_POST['simple_spam'])) {
error($config['error']['simple_spam']);
}
}
// Check if banned
checkBan($board['uri']);
// Check for CAPTCHA right after opening the board so the "return" link is in there
if ($config['recaptcha']) {
if (!isset($_POST['g-recaptcha-response']))
error($config['error']['bot']);
// Check what reCAPTCHA has to say...
$resp = json_decode(file_get_contents(sprintf('https://www.recaptcha.net/recaptcha/api/siteverify?secret=%s&response=%s&remoteip=%s',
$config['recaptcha_private'],
urlencode($_POST['g-recaptcha-response']),
$_SERVER['REMOTE_ADDR'])), true);
if (!$resp['success']) {
error($config['error']['captcha']);
}
}
// hCaptcha
if ($config['hcaptcha']) {
if (!isset($_POST['h-captcha-response'])) {
error($config['error']['bot']);
}
$data = array(
'secret' => $config['hcaptcha_private'],
'response' => $_POST['h-captcha-response'],
'remoteip' => $_SERVER['REMOTE_ADDR']
);
$hcaptchaverify = curl_init();
curl_setopt($hcaptchaverify, CURLOPT_URL, "https://hcaptcha.com/siteverify");
curl_setopt($hcaptchaverify, CURLOPT_POST, true);
curl_setopt($hcaptchaverify, CURLOPT_POSTFIELDS, http_build_query($data));
curl_setopt($hcaptchaverify, CURLOPT_RETURNTRANSFER, true);
$hcaptcharesponse = curl_exec($hcaptchaverify);
$resp = json_decode($hcaptcharesponse, true); // Decoding $hcaptcharesponse instead of $response
if (!$resp['success']) {
error($config['error']['captcha']);
}
}
// Same, but now with our custom captcha provider
if (($config['captcha']['enabled']) || (($post['op']) && ($config['new_thread_capt'])) ) {
$ch = curl_init($config['domain'].'/'.$config['captcha']['provider_check'] . "?" . http_build_query([
'mode' => 'check',
'text' => $_POST['captcha_text'],
'extra' => $config['captcha']['extra'],
'cookie' => $_POST['captcha_cookie']
]));
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
$resp = curl_exec($ch);
if ($resp !== '1') {
error($config['error']['captcha'] .
'');
}
}
if (!(($post['op'] && $_POST['post'] == $config['button_newtopic']) ||
(!$post['op'] && $_POST['post'] == $config['button_reply'])))
error($config['error']['bot']);
// Check the referrer
if ($config['referer_match'] !== false &&
(!isset($_SERVER['HTTP_REFERER']) || !preg_match($config['referer_match'], rawurldecode($_SERVER['HTTP_REFERER']))))
error($config['error']['referer']);
checkDNSBL();
if ($post['mod'] = isset($_POST['mod']) && $_POST['mod']) {
check_login(false);
if (!$mod) {
// Liar. You're not a mod.
error($config['error']['notamod']);
}
$post['sticky'] = $post['op'] && isset($_POST['sticky']);
$post['locked'] = $post['op'] && isset($_POST['lock']);
$post['raw'] = isset($_POST['raw']);
if ($post['sticky'] && !hasPermission($config['mod']['sticky'], $board['uri']))
error($config['error']['noaccess']);
if ($post['locked'] && !hasPermission($config['mod']['lock'], $board['uri']))
error($config['error']['noaccess']);
if ($post['raw'] && !hasPermission($config['mod']['rawhtml'], $board['uri']))
error($config['error']['noaccess']);
}
if (!$post['mod']) {
$post['antispam_hash'] = checkSpam(array($board['uri'], isset($post['thread']) ? $post['thread'] : ($config['try_smarter'] && isset($_POST['page']) ? 0 - (int)$_POST['page'] : null)));
if ($post['antispam_hash'] === true)
error($config['error']['spam']);
}
if ($config['robot_enable'] && $config['robot_mute']) {
checkMute();
}
}
else {
$mod = $post['mod'] = false;
}
//Check if thread exists
if (!$post['op']) {
$query = prepare(sprintf("SELECT `sticky`,`locked`,`cycle`,`sage`,`slug` FROM ``posts_%s`` WHERE `id` = :id AND `thread` IS NULL LIMIT 1", $board['uri']));
$query->bindValue(':id', $post['thread'], PDO::PARAM_INT);
$query->execute() or error(db_error());
if (!$thread = $query->fetch(PDO::FETCH_ASSOC)) {
// Non-existant
error($config['error']['nonexistant']);
}
}
else {
$thread = false;
}
// Check for an embed field
if ($config['enable_embedding'] && isset($_POST['embed']) && !empty($_POST['embed'])) {
// yep; validate it
$value = $_POST['embed'];
foreach ($config['embedding'] as &$embed) {
if (preg_match($embed[0], $value)) {
// Valid link
$post['embed'] = $value;
// This is bad, lol.
$post['no_longer_require_an_image_for_op'] = true;
break;
}
}
if (!isset($post['embed'])) {
error($config['error']['invalid_embed']);
}
}
if (!hasPermission($config['mod']['bypass_field_disable'], $board['uri'])) {
if ($config['field_disable_name'])
$_POST['name'] = $config['anonymous']; // "forced anonymous"
if ($config['field_disable_email'])
$_POST['email'] = '';
if ($config['field_disable_password'])
$_POST['password'] = '';
if ($config['field_disable_subject'] || (!$post['op'] && $config['field_disable_reply_subject']))
$_POST['subject'] = '';
}
if ($config['allow_upload_by_url'] && isset($_POST['file_url']) && !empty($_POST['file_url'])) {
$allowed_extensions = $config['allowed_ext_files'];
// Add allowed extensions for OP, if enabled.
if ($post['op'] && $config['allowed_ext_op']) {
array_merge($allowed_extensions, $config['allowed_ext_op']);
}
try {
$_FILES['file'] = download_file_from_url($_POST['file_url'], $config['upload_by_url_timeout'], $allowed_extensions, $config['tmp'], $config['error']);
} catch (Exception $e) {
error($e->getMessage());
}
}
$post['name'] = $_POST['name'] != '' ? $_POST['name'] : $config['anonymous'];
$post['subject'] = $_POST['subject'];
$post['email'] = str_replace(' ', '%20', htmlspecialchars($_POST['email']));
$post['body'] = $_POST['body'];
$post['password'] = $_POST['password'];
$post['has_file'] = (!isset($post['embed']) && (($post['op'] && !isset($post['no_longer_require_an_image_for_op']) && $config['force_image_op']) || count($_FILES) > 0));
if (!$dropped_post) {
if (!($post['has_file'] || isset($post['embed'])) || (($post['op'] && $config['force_body_op']) || (!$post['op'] && $config['force_body']))) {
$stripped_whitespace = preg_replace('/[\s]/u', '', $post['body']);
if ($stripped_whitespace == '') {
error($config['error']['tooshort_body']);
}
}
if (!$post['op']) {
// Check if thread is locked
// but allow mods to post
if ($thread['locked'] && !hasPermission($config['mod']['postinlocked'], $board['uri']))
error($config['error']['locked']);
$numposts = numPosts($post['thread']);
if ($config['reply_hard_limit'] != 0 && $config['reply_hard_limit'] <= $numposts['replies'])
error($config['error']['reply_hard_limit']);
if ($post['has_file'] && $config['image_hard_limit'] != 0 && $config['image_hard_limit'] <= $numposts['images'])
error($config['error']['image_hard_limit']);
}
}
else {
if (!$post['op']) {
$numposts = numPosts($post['thread']);
}
}
if ($post['has_file']) {
// Determine size sanity
$size = 0;
if ($config['multiimage_method'] == 'split') {
foreach ($_FILES as $key => $file) {
$size += $file['size'];
}
} elseif ($config['multiimage_method'] == 'each') {
foreach ($_FILES as $key => $file) {
if ($file['size'] > $size) {
$size = $file['size'];
}
}
} else {
error(_('Unrecognized file size determination method.'));
}
if ($size > $config['max_filesize'])
error(sprintf3($config['error']['filesize'], array(
'sz' => number_format($size),
'filesz' => number_format($size),
'maxsz' => number_format($config['max_filesize'])
)));
$post['filesize'] = $size;
}
$post['capcode'] = false;
if ($mod && preg_match('/^((.+) )?## (.+)$/', $post['name'], $matches)) {
$name = $matches[2] != '' ? $matches[2] : $config['anonymous'];
$cap = $matches[3];
if (isset($config['mod']['capcode'][$mod['type']])) {
if ( $config['mod']['capcode'][$mod['type']] === true ||
(is_array($config['mod']['capcode'][$mod['type']]) &&
in_array($cap, $config['mod']['capcode'][$mod['type']])
)) {
$post['capcode'] = utf8tohtml($cap);
$post['name'] = $name;
}
}
}
$trip = generate_tripcode($post['name']);
$post['name'] = $trip[0];
$post['trip'] = isset($trip[1]) ? $trip[1] : ''; // XX: Dropped posts and tripcodes
$noko = false;
if (strtolower($post['email']) == 'noko') {
$noko = true;
$post['email'] = '';
} elseif (strtolower($post['email']) == 'nonoko'){
$noko = false;
$post['email'] = '';
} else $noko = $config['always_noko'];
if ($post['has_file']) {
$i = 0;
foreach ($_FILES as $key => $file) {
if (!in_array($file['error'], array(UPLOAD_ERR_NO_FILE, UPLOAD_ERR_OK))) {
error(sprintf3($config['error']['phpfileserror'], array(
'index' => $i+1,
'code' => $file['error']
)));
}
if ($file['size'] && $file['tmp_name']) {
$file['filename'] = urldecode($file['name']);
$file['extension'] = strtolower(mb_substr($file['filename'], mb_strrpos($file['filename'], '.') + 1));
if (isset($config['filename_func']))
$file['file_id'] = $config['filename_func']($file);
else
$file['file_id'] = time() . substr(microtime(), 2, 3);
if (sizeof($_FILES) > 1)
$file['file_id'] .= "-$i";
$file['file'] = $board['dir'] . $config['dir']['img'] . $file['file_id'] . '.' . $file['extension'];
$file['thumb'] = $board['dir'] . $config['dir']['thumb'] . $file['file_id'] . '.' . ($config['thumb_ext'] ? $config['thumb_ext'] : $file['extension']);
$post['files'][] = $file;
$i++;
}
}
}
if (empty($post['files'])) $post['has_file'] = false;
if (!$dropped_post) {
// Check for a file
if ($post['op'] && !isset($post['no_longer_require_an_image_for_op'])) {
if (!$post['has_file'] && $config['force_image_op'])
error($config['error']['noimage']);
}
// Check for too many files
if (sizeof($post['files']) > $config['max_images'])
error($config['error']['toomanyimages']);
}
if ($config['strip_combining_chars']) {
$post['name'] = strip_combining_chars($post['name']);
$post['email'] = strip_combining_chars($post['email']);
$post['subject'] = strip_combining_chars($post['subject']);
$post['body'] = strip_combining_chars($post['body']);
}
if (!$dropped_post) {
// Check string lengths
if (mb_strlen($post['name']) > 35)
error(sprintf($config['error']['toolong'], 'name'));
if (mb_strlen($post['email']) > 40)
error(sprintf($config['error']['toolong'], 'email'));
if (mb_strlen($post['subject']) > 100)
error(sprintf($config['error']['toolong'], 'subject'));
if (!$mod && mb_strlen($post['body']) > $config['max_body'])
error($config['error']['toolong_body']);
if (!$mod && substr_count($post['body'], "\n") >= $config['maximum_lines'])
error($config['error']['toomanylines']);
if (mb_strlen($post['password']) > 20)
error(sprintf($config['error']['toolong'], 'password'));
}
wordfilters($post['body']);
$post['body'] = escape_markup_modifiers($post['body']);
if ($mod && isset($post['raw']) && $post['raw']) {
$post['body'] .= "\n1";
}
if (!$dropped_post)
if (($config['country_flags'] && !$config['allow_no_country']) || ($config['country_flags'] && $config['allow_no_country'] && !isset($_POST['no_country']))) {
$gi=geoip_open('inc/lib/geoip/GeoIPv6.dat', GEOIP_STANDARD);
function ipv4to6($ip) {
if (strpos($ip, ':') !== false) {
if (strpos($ip, '.') > 0)
$ip = substr($ip, strrpos($ip, ':')+1);
else return $ip; //native ipv6
}
$iparr = array_pad(explode('.', $ip), 4, 0);
$part7 = base_convert(($iparr[0] * 256) + $iparr[1], 10, 16);
$part8 = base_convert(($iparr[2] * 256) + $iparr[3], 10, 16);
return '::ffff:'.$part7.':'.$part8;
}
if ($country_code = geoip_country_code_by_addr_v6($gi, ipv4to6($_SERVER['REMOTE_ADDR']))) {
if (!in_array(strtolower($country_code), array('eu', 'ap', 'o1', 'a1', 'a2')))
$post['body'] .= "\n".strtolower($country_code)."".
"\n".geoip_country_name_by_addr_v6($gi, ipv4to6($_SERVER['REMOTE_ADDR']))."";
}
}
if ($config['user_flag'] && isset($_POST['user_flag']) && !empty($_POST['user_flag'])) {
$user_flag = $_POST['user_flag'];
if (!isset($config['user_flags'][$user_flag])) {
error(_('Invalid flag selection!'));
}
$flag_alt = isset($user_flag_alt) ? $user_flag_alt : $config['user_flags'][$user_flag];
$post['body'] .= "\n" . strtolower($user_flag) . "" .
"\n" . $flag_alt . "";
}
if ($config['allowed_tags'] && $post['op'] && isset($_POST['tag']) && isset($config['allowed_tags'][$_POST['tag']])) {
$post['body'] .= "\n" . $_POST['tag'] . "";
}
if (!$dropped_post)
if ($config['proxy_save'] && isset($_SERVER['HTTP_X_FORWARDED_FOR'])) {
$proxy = preg_replace("/[^0-9a-fA-F.,: ]/", '', $_SERVER['HTTP_X_FORWARDED_FOR']);
$post['body'] .= "\n".$proxy."";
}
$post['body_nomarkup'] = strip_symbols($post['body']);
$post['tracked_cites'] = markup($post['body'], true);
if ($post['has_file']) {
$allhashes = '';
foreach ($post['files'] as $key => &$file) {
if ($post['op'] && $config['allowed_ext_op']) {
if (!in_array($file['extension'], $config['allowed_ext_op']))
error($config['error']['unknownext']);
}
elseif (!in_array($file['extension'], $config['allowed_ext']) && !in_array($file['extension'], $config['allowed_ext_files']))
error($config['error']['unknownext']);
$file['is_an_image'] = !in_array($file['extension'], $config['allowed_ext_files']);
// Truncate filename if it is too long
$file['filename'] = mb_substr($file['filename'], 0, $config['max_filename_len']);
$upload = $file['tmp_name'];
if (!is_readable($upload))
error($config['error']['nomove']);
$hash = md5_hash_of_file($config, $upload);
$file['hash'] = $hash;
$allhashes .= $hash;
}
if (count ($post['files']) == 1) {
$post['filehash'] = $hash;
}
else {
$post['filehash'] = md5($allhashes);
}
}
if (!hasPermission($config['mod']['bypass_filters'], $board['uri']) && !$dropped_post) {
require_once 'inc/filters.php';
do_filters($post);
}
if ($post['has_file']) {
foreach ($post['files'] as $key => &$file) {
if ($file['is_an_image']) {
if ($config['ie_mime_type_detection'] !== false) {
// Check IE MIME type detection XSS exploit
$buffer = file_get_contents($upload, null, null, null, 255);
if (preg_match($config['ie_mime_type_detection'], $buffer)) {
undoImage($post);
error($config['error']['mime_exploit']);
}
}
require_once 'inc/image.php';
// find dimensions of an image using GD
if (!$size = @getimagesize($file['tmp_name'])) {
error($config['error']['invalidimg']);
}
if (!in_array($size[2], array(IMAGETYPE_PNG, IMAGETYPE_GIF, IMAGETYPE_JPEG, IMAGETYPE_BMP, IMAGETYPE_WEBP))) {
error($config['error']['invalidimg']);
}
if ($size[0] > $config['max_width'] || $size[1] > $config['max_height']) {
error($config['error']['maxsize']);
}
// The following code corrects the image orientation.
if ($config['convert_auto_orient'] && ($size[2] == IMAGETYPE_JPEG)) {
// 'redraw_image' should already fix image orientation by itself
if (!($config['redraw_image'])) {
if (in_array($config['thumb_method'], array('convert', 'convert+gifsicle', 'gm', 'gm+gifsicle'))) {
$exif = @exif_read_data($file['tmp_name']);
$gm = in_array($config['thumb_method'], array('gm', 'gm+gifsicle'));
if (isset($exif['Orientation']) && $exif['Orientation'] != 1) {
$error = shell_exec_error(($gm ? 'gm ' : '') . 'convert ' .
escapeshellarg($file['tmp_name']) . ' -auto-orient ' . escapeshellarg($file['tmp_name']));
if ($error)
error(_('Could not auto-orient image!'), null, $error);
$size = @getimagesize($file['tmp_name']);
}
}
}
}
// create image object
$image = new Image($file['tmp_name'], $file['extension'], $size);
if ($image->size->width > $config['max_width'] || $image->size->height > $config['max_height']) {
$image->delete();
error($config['error']['maxsize']);
}
$file['width'] = $image->size->width;
$file['height'] = $image->size->height;
if ($config['spoiler_images'] && isset($_POST['spoiler'])) {
$file['thumb'] = 'spoiler';
$size = @getimagesize($config['spoiler_image']);
$file['thumbwidth'] = $size[0];
$file['thumbheight'] = $size[1];
} elseif ($config['minimum_copy_resize'] &&
$image->size->width <= $config['thumb_width'] &&
$image->size->height <= $config['thumb_height'] &&
$file['extension'] == ($config['thumb_ext'] ? $config['thumb_ext'] : $file['extension'])) {
// Copy, because there's nothing to resize
copy($file['tmp_name'], $file['thumb']);
$file['thumbwidth'] = $image->size->width;
$file['thumbheight'] = $image->size->height;
} else {
$thumb = $image->resize(
$config['thumb_ext'] ? $config['thumb_ext'] : $file['extension'],
$post['op'] ? $config['thumb_op_width'] : $config['thumb_width'],
$post['op'] ? $config['thumb_op_height'] : $config['thumb_height']
);
$thumb->to($file['thumb']);
$file['thumbwidth'] = $thumb->width;
$file['thumbheight'] = $thumb->height;
$thumb->_destroy();
}
$dont_copy_file = false;
if ($config['redraw_image'] || (!@$file['exif_stripped'] && $config['strip_exif'] && ($file['extension'] == 'jpg' || $file['extension'] == 'jpeg'))) {
if (!$config['redraw_image'] && $config['use_exiftool']) {
try {
$file['size'] = strip_image_metadata($file['tmp_name']);
} catch (RuntimeException $e) {
if ($config['syslog']) {
_syslog(LOG_ERR, "Could not strip image metadata: {$e->getMessage()}");
// Since EXIF metadata can countain sensible info, fail the request.
error(_('Could not strip EXIF metadata!'), null, $error);
}
}
} else {
$image->to($file['file']);
$dont_copy_file = true;
}
}
$image->destroy();
} else {
// not an image
$file['thumb'] = 'file';
$size = @getimagesize(sprintf($config['file_thumb'],
isset($config['file_icons'][$file['extension']]) ?
$config['file_icons'][$file['extension']] : $config['file_icons']['default']));
$file['thumbwidth'] = $size[0];
$file['thumbheight'] = $size[1];
$dont_copy_file = false;
}
if ($config['tesseract_ocr'] && $file['thumb'] != 'file') { // Let's OCR it!
$fname = $file['tmp_name'];
if ($file['height'] > 500 || $file['width'] > 500) {
$fname = $file['thumb'];
}
if ($fname !== 'spoiler') { // We don't have that much CPU time, do we?
try {
$txt = ocr_image($config, $fname);
if ($txt !== '') {
// This one has an effect, that the body is appended to a post body. So you can write a correct
// spamfilter.
$post['body_nomarkup'] .= "" . htmlspecialchars($value) . "";
}
} catch (RuntimeException $e) {
if ($config['syslog']) {
_syslog(LOG_ERR, "Could not OCR image: {$e->getMessage()}");
}
}
}
}
if (!$dont_copy_file) {
if (isset($file['file_tmp'])) {
if (!@rename($file['tmp_name'], $file['file']))
error($config['error']['nomove']);
chmod($file['file'], 0644);
} elseif (!@move_uploaded_file($file['tmp_name'], $file['file']))
error($config['error']['nomove']);
}
}
if ($config['image_reject_repost']) {
if ($p = getPostByHash($post['filehash'])) {
undoImage($post);
error(sprintf($config['error']['fileexists'],
($post['mod'] ? $config['root'] . $config['file_mod'] . '?/' : $config['root']) .
($board['dir'] . $config['dir']['res'] .
($p['thread'] ?
$p['thread'] . '.html#' . $p['id']
:
$p['id'] . '.html'
))
));
}
} else if (!$post['op'] && $config['image_reject_repost_in_thread']) {
if ($p = getPostByHashInThread($post['filehash'], $post['thread'])) {
undoImage($post);
error(sprintf($config['error']['fileexistsinthread'],
($post['mod'] ? $config['root'] . $config['file_mod'] . '?/' : $config['root']) .
($board['dir'] . $config['dir']['res'] .
($p['thread'] ?
$p['thread'] . '.html#' . $p['id']
:
$p['id'] . '.html'
))
));
}
}
}
// Do filters again if OCRing
if ($config['tesseract_ocr'] && !hasPermission($config['mod']['bypass_filters'], $board['uri']) && !$dropped_post) {
do_filters($post);
}
if (!hasPermission($config['mod']['postunoriginal'], $board['uri']) && $config['robot_enable'] && checkRobot($post['body_nomarkup']) && !$dropped_post) {
undoImage($post);
if ($config['robot_mute']) {
error(sprintf($config['error']['muted'], mute()));
} else {
error($config['error']['unoriginal']);
}
}
// Remove board directories before inserting them into the database.
if ($post['has_file']) {
foreach ($post['files'] as $key => &$file) {
$file['file_path'] = $file['file'];
$file['thumb_path'] = $file['thumb'];
$file['file'] = mb_substr($file['file'], mb_strlen($board['dir'] . $config['dir']['img']));
if ($file['is_an_image'] && $file['thumb'] != 'spoiler')
$file['thumb'] = mb_substr($file['thumb'], mb_strlen($board['dir'] . $config['dir']['thumb']));
}
}
$post = (object)$post;
$post->files = array_map(function($a) { return (object)$a; }, $post->files);
$error = event('post', $post);
$post->files = array_map(function($a) { return (array)$a; }, $post->files);
if ($error) {
undoImage((array)$post);
error($error);
}
$post = (array)$post;
$post['num_files'] = sizeof($post['files']);
$post['id'] = $id = post($post);
$post['slug'] = slugify($post);
if ($dropped_post && $dropped_post['from_nntp']) {
$query = prepare("INSERT INTO ``nntp_references`` (`board`, `id`, `message_id`, `message_id_digest`, `own`, `headers`) VALUES ".
"(:board , :id , :message_id , :message_id_digest , false, :headers)");
$query->bindValue(':board', $dropped_post['board']);
$query->bindValue(':id', $id);
$query->bindValue(':message_id', $dropped_post['msgid']);
$query->bindValue(':message_id_digest', sha1($dropped_post['msgid']));
$query->bindValue(':headers', $dropped_post['headers']);
$query->execute() or error(db_error($query));
} // ^^^^^ For inbound posts ^^^^^
elseif ($config['nntpchan']['enabled'] && $config['nntpchan']['group']) {
// vvvvv For outbound posts vvvvv
require_once('inc/nntpchan/nntpchan.php');
$msgid = gen_msgid($post['board'], $post['id']);
list($headers, $files) = post2nntp($post, $msgid);
$message = gen_nntp($headers, $files);
$query = prepare("INSERT INTO ``nntp_references`` (`board`, `id`, `message_id`, `message_id_digest`, `own`, `headers`) VALUES ".
"(:board , :id , :message_id , :message_id_digest , true , :headers)");
$query->bindValue(':board', $post['board']);
$query->bindValue(':id', $post['id']);
$query->bindValue(':message_id', $msgid);
$query->bindValue(':message_id_digest', sha1($msgid));
$query->bindValue(':headers', json_encode($headers));
$query->execute() or error(db_error($query));
// Let's broadcast it!
nntp_publish($message, $msgid);
}
insertFloodPost($post);
// Handle cyclical threads
if (!$post['op'] && isset($thread['cycle']) && $thread['cycle']) {
delete_cyclical_posts($board['uri'], $post['thread'], $config['cycle_limit']);
}
if (isset($post['antispam_hash'])) {
incrementSpamHash($post['antispam_hash']);
}
if (isset($post['tracked_cites']) && !empty($post['tracked_cites'])) {
$insert_rows = array();
foreach ($post['tracked_cites'] as $cite) {
$insert_rows[] = '(' .
$pdo->quote($board['uri']) . ', ' . (int)$id . ', ' .
$pdo->quote($cite[0]) . ', ' . (int)$cite[1] . ')';
}
query('INSERT INTO ``cites`` VALUES ' . implode(', ', $insert_rows)) or error(db_error());
}
if (!$post['op'] && strtolower($post['email']) != 'sage' && !$thread['sage'] && ($config['reply_limit'] == 0 || $numposts['replies']+1 < $config['reply_limit'])) {
bumpThread($post['thread']);
}
if (isset($_SERVER['HTTP_REFERER'])) {
// Tell Javascript that we posted successfully
if (isset($_COOKIE[$config['cookies']['js']]))
$js = json_decode($_COOKIE[$config['cookies']['js']]);
else
$js = (object) array();
// Tell it to delete the cached post for referer
$js->{$_SERVER['HTTP_REFERER']} = true;
// Encode and set cookie
setcookie($config['cookies']['js'], json_encode($js), 0, $config['cookies']['jail'] ? $config['cookies']['path'] : '/', null, false, false);
}
$root = $post['mod'] ? $config['root'] . $config['file_mod'] . '?/' : $config['root'];
if ($noko) {
$redirect = $root . $board['dir'] . $config['dir']['res'] .
link_for($post, false, false, $thread) . (!$post['op'] ? '#' . $id : '');
if (!$post['op'] && isset($_SERVER['HTTP_REFERER'])) {
$regex = array(
'board' => str_replace('%s', '(\w{1,8})', preg_quote($config['board_path'], '/')),
'page' => str_replace('%d', '(\d+)', preg_quote($config['file_page'], '/')),
'page50' => '(' . str_replace('%d', '(\d+)', preg_quote($config['file_page50'], '/')) . '|' .
str_replace(array('%d', '%s'), array('(\d+)', '[a-z0-9-]+'), preg_quote($config['file_page50_slug'], '/')) . ')',
'res' => preg_quote($config['dir']['res'], '/'),
);
if (preg_match('/\/' . $regex['board'] . $regex['res'] . $regex['page50'] . '([?&].*)?$/', $_SERVER['HTTP_REFERER'])) {
$redirect = $root . $board['dir'] . $config['dir']['res'] .
link_for($post, true, false, $thread) . (!$post['op'] ? '#' . $id : '');
}
}
} else {
$redirect = $root . $board['dir'] . $config['file_index'];
}
buildThread($post['op'] ? $id : $post['thread']);
if ($config['syslog'])
_syslog(LOG_INFO, 'New post: /' . $board['dir'] . $config['dir']['res'] .
link_for($post) . (!$post['op'] ? '#' . $id : ''));
if (!$post['mod']) header('X-Associated-Content: "' . $redirect . '"');
if (!isset($_POST['json_response'])) {
header('Location: ' . $redirect, true, $config['redirect_http']);
} else {
header('Content-Type: text/json; charset=utf-8');
echo json_encode(array(
'redirect' => $redirect,
'noko' => $noko,
'id' => $id
));
}
if ($config['try_smarter'] && $post['op'])
$build_pages = range(1, $config['max_pages']);
if ($post['op'])
clean($id);
event('post-after', $post);
buildIndex();
// We are already done, let's continue our heavy-lifting work in the background (if we run off FastCGI)
if (function_exists('fastcgi_finish_request'))
@fastcgi_finish_request();
if ($post['op'])
rebuildThemes('post-thread', $board['uri']);
else
rebuildThemes('post', $board['uri']);
} elseif (isset($_POST['appeal'])) {
if (!isset($_POST['ban_id']))
error($config['error']['bot']);
$ban_id = (int)$_POST['ban_id'];
$ban = Bans::findSingle($_SERVER['REMOTE_ADDR'], $ban_id, $config['require_ban_view']);
if (empty($ban)) {
error($config['error']['noban']);
}
if ($ban['expires'] && $ban['expires'] - $ban['created'] <= $config['ban_appeals_min_length']) {
error($config['error']['tooshortban']);
}
$query = query("SELECT `denied` FROM ``ban_appeals`` WHERE `ban_id` = $ban_id") or error(db_error());
$ban_appeals = $query->fetchAll(PDO::FETCH_COLUMN);
if (count($ban_appeals) >= $config['ban_appeals_max']) {
error($config['error']['toomanyappeals']);
}
foreach ($ban_appeals as $is_denied) {
if (!$is_denied) {
error($config['error']['pendingappeal']);
}
}
if (strlen($_POST['appeal']) > $config['ban_appeal_max_chars']) {
error($config['error']['toolongappeal']);
}
$query = prepare("INSERT INTO ``ban_appeals`` VALUES (NULL, :ban_id, :time, :message, 0)");
$query->bindValue(':ban_id', $ban_id, PDO::PARAM_INT);
$query->bindValue(':time', time(), PDO::PARAM_INT);
$query->bindValue(':message', $_POST['appeal']);
$query->execute() or error(db_error($query));
displayBan($ban);
} else {
if (!file_exists($config['has_installed'])) {
header('Location: install.php', true, $config['redirect_http']);
} else {
// They opened post.php in their browser manually.
error($config['error']['nopost']);
}
}