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post.php
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<?php
/*
* Copyright (c) 2010-2014 Tinyboard Development Group
*/
require_once 'inc/bootstrap.php';
/**
* Get the md5 hash of the file.
*
* @param [type] $config instance configuration.
* @param [type] $file file to the the md5 of.
* @return string|false
*/
function md5_hash_of_file($config, $file)
{
$cmd = false;
if ($config['bsd_md5']) {
$cmd = '/sbin/md5 -r';
}
if ($config['gnu_md5']) {
$cmd = 'md5sum';
}
if ($cmd) {
$output = shell_exec_error($cmd . " " . escapeshellarg($file));
$output = explode(' ', $output);
return $output[0];
} else {
return md5_file($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);
}
/**
* 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 deleteCyclicalPosts(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 $id) {
deletePostShadow($id, false);
}
}
function handle_delete()
{
global $config, $board;
if (!isset($_POST['board'], $_POST['password'])) {
error($config['error']['bot']);
}
if(empty($_POST['password'])) {
error($config['error']['invalidpassword']);
}
$password = sha256Salted($_POST['password']);
$delete = array();
foreach ($_POST as $post => $value) {
if (preg_match('/^delete_(\d+)$/', $post, $m)) {
$delete[] = (int)$m[1];
}
}
// Check if board exists
if (!openBoard($_POST['board'])) {
error($config['error']['noboard']);
}
checkDNSBL();
// Check if banned
checkBan($board['uri']);
if ((!isset($_POST['mod']) || !$_POST['mod']) && $config['board_locked']) {
error(_("Board is locked"));
}
// Check if deletion enabled
if (!$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`, `num_files` 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) {
continue;
}
if (is_countable($delete) && count($delete) == 1) {
if (isset($_POST['file_single']) && $_POST['file_single'] > $post['num_files']) {
error($config['error']['invalidimg']);
}
}
$thread = false;
if ($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 = $thread_query->fetch(PDO::FETCH_ASSOC);
}
if ((!hash_equals($post['password'], $password) && !$thread) ||
($thread && !hash_equals($thread['password'], $password))) {
error($config['error']['invalidpassword']);
}
if ($post['thread'] === null) {
$reply_count = numPosts($id);
if ($post['time'] > time() - $config['delete_time']) {
error(sprintf($config['error']['delete_too_soon'], until($post['time'] + $config['delete_time'])));
}
} else {
if ($post['time'] > time() - $config['delete_time_reply'] && (!$thread || !hash_equals($thread['password'], $password))) {
error(sprintf($config['error']['delete_too_soon'], until($post['time'] + $config['delete_time'])));
}
}
$ip = get_ip_hash($_SERVER['REMOTE_ADDR']);
if (isset($_POST['file'])) {
// Delete file
if(isset($_POST['file_single']) && !empty($_POST['file_single']) && $_POST['file_single'] !== '*') {
// Delete spesific file
if(is_numeric($_POST['file_single'])) {
deleteFile($id, false, (int)$_POST['file_single'] - 1);
modLog("User at $ip deleted specific file from his own post #$id");
} else {
error(_('Uknown file specified.'));
}
} else {
// Delete all file(s)
deleteFile($id);
modLog("User at $ip deleted all file(s) from his own post #$id");
}
} elseif ($post['thread'] === null && $reply_count['replies'] > $config['allow_delete_cutoff']) {
deletePostContent($id);
} else {
// Delete entire post
if($config['shadow_del']['user_delete']) {
deletePostShadow($id);
modLog("User at $ip deleted his own post #$id (shadow deleted)");
} else {
deletePostPermanent($id);
modLog("User at $ip deleted his own post #$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'];
$redirect = $post['thread'] ? $root . $board['dir'] . $config['dir']['res'] . link_for($post) . '#' . $delete[0]
: $root . $board['dir'];
if (!isset($_POST['json_response'])) {
header('Location: ' . $redirect, true, $config['redirect_http']);
} else {
header('Content-Type: text/json');
echo json_encode(array('success' => true, 'redirect' => $redirect));
}
// 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']);
}
function handle_report()
{
global $config, $board;
if (!isset($_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];
}
}
// Check if board exists
if (!openBoard($_POST['board'])) {
error($config['error']['noboard']);
}
checkDNSBL();
// Check if banned
checkBan($board['uri']);
if ((!isset($_POST['mod']) || !$_POST['mod']) && $config['board_locked']) {
error(_("Board is locked"));
}
if ($config['report_system_predefined'] && !empty($_POST['reason'])) {
$reason_id = (int) str_replace('reason_', '', $_POST['reason']);
if (isset($config['report_reasons'][$reason_id])) {
$_POST['reason'] = $config['report_reasons'][$reason_id];
} else {
$_POST['reason'] = '';
}
}
$tries = Cache::get("report_send_{$_SERVER['REMOTE_ADDR']}_to_{$report[0]}") ?? 0;
if (empty($report)) {
error($config['error']['noreport']);
}
if (mb_strlen($_POST['reason']) > 30 || empty($_POST['reason'])) {
error($config['error']['invalidreport']);
}
if (count($report) > $config['report_limit']) {
error($config['error']['toomanyreports']);
}
if ($tries > $config['report_same_limit']) {
error($config['error']['toomanysamereport']);
}
if ($config['captcha']['report_captcha'] && !isset($_POST['captcha_text'], $_POST['captcha_cookie'])) {
error($config['error']['bot']);
}
if ($config['captcha']['report_captcha']) {
$ch = curl_init($config['captcha']['provider_check'] . "?" . http_build_query([
'mode' => 'check',
'text' => $_POST['captcha_text'],
'cookie' => $_POST['captcha_cookie']
]));
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
$resp = json_decode(curl_exec($ch), true);
if (!$resp['success']) {
error($config['error']['captcha']);
}
}
$reason = escape_markup_modifiers($_POST['reason']);
markup($reason);
foreach ($report as &$id) {
$query = prepare(sprintf("SELECT `id`, `thread`, `body_nomarkup` 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 . '"'
);
}
$ip = get_ip_hash($_SERVER['REMOTE_ADDR']);
$query = prepare("INSERT INTO ``reports`` (`time`, `ip`, `board`, `post`, `reason`) VALUES (:time, :ip, :board, :post, :reason)");
$query->bindValue(':time', time(), PDO::PARAM_INT);
$query->bindValue(':ip', $ip, 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));
Cache::set("report_send_{$ip}_to_{$id}", $tries + 1, 60 * 10);
// thanks lainchan for the skeleton
if ($config['discord']['enabled']) {
// regex to remove quotes and strip line breaks
$postcontent = preg_replace('/>{2,}.+|\\n/', ' ', $post['body_nomarkup']);
$discordmessage = '***Novo report***' . "\n";
$discordmessage .= '***Link: *** ' . '<' . $config['domain'] . '/' . $config['file_mod'] . '/' . $board['dir'] . $config['dir']['res'] . link_for($post) . ($post['thread'] ? '#' . $id : '') . '>' . "\n";
$discordmessage .= '***Board: *** /' . $board['dir'] . "\n";
$discordmessage .= '***Post: *** ' . $postcontent . "\n";
$discordmessage .= '***Motivo: *** ' . $reason . "\n";
$discordmessage .= "***Denunciado por: *** <{$config['domain']}/mod.php?/IP/{$ip}/page/1>";
discord($discordmessage);
}
}
$is_mod = isset($_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'];
$reported = $root . $board['dir'] . $config['dir']['res'] . link_for($post) . ($post['thread'] ? '#' . $id : '');
$indexLink = '<a href="' . $index . '">[ ' . _('Index') . ' ]</a>';
$reportedLink = '<a href="' . $reported . '">[ ' . _('Go to thread') . ' ]</a>';
$bodyContent = "<div style='text-align:center; padding-left:'>{$indexLink} {$reportedLink}</div>";
$title = _('Report submitted!');
echo Element('page.html', [
'config' => $config,
'body' => $bodyContent,
'title' => $title
]);
} else {
header('Content-Type: text/json');
echo json_encode(array('success' => true));
}
}
function handle_post()
{
global $config, $board, $mod, $pdo;
if (!isset($_POST['body'], $_POST['board'])) {
error($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']) || !in_array($_POST['email'], ['sage', 'noko', 'nonoko'])) {
$_POST['email'] = '';
}
if (!isset($_POST['subject'])) {
$_POST['subject'] = '';
}
// QUICK AND DIRTY FIX FOR THOSE EXPLOITING THE ##
$_POST['subject'] = str_replace("##", "Certamente não é uma moderadora", $_POST['subject']);
if (!isset($_POST['password'])) {
$_POST['password'] = '';
}
if (isset($_POST['thread'])) {
$post['op'] = false;
if (is_numeric($_POST['thread'])) {
$post['thread'] = round((float)$_POST['thread']);
} else {
$post['thread'] = 0;
}
} else {
$post['op'] = true;
}
$post['ip'] = get_ip_hash($_SERVER['REMOTE_ADDR']);
checkDNSBL();
if ($config['block_proxy_vpn']['enabled'] && !$config['block_proxy_vpn']['use_filter'] && handleBlocks()) {
Bans::new_ban($post['ip'],
get_uuser_cookie(),
$config['block_proxy_vpn']['ban_reason'],
$config['block_proxy_vpn']['ban_time'],
);
}
// Check if banned, warned or nicenoticed
checkBan($board['uri']);
// Check for CAPTCHA right after opening the board so the "return" link is in there
if ($config['hcaptcha']) {
if (!isset($_POST['h-captcha-response'])) {
error($config['error']['bot']);
}
// Check what hCAPTCHA has to say...
$resp = json_decode(file_get_contents(sprintf(
'https://hcaptcha.com/siteverify?secret=%s&response=%s&remoteip=%s',
$config['hcaptcha_private'],
urlencode($_POST['h-captcha-response']),
$_SERVER['REMOTE_ADDR']
)), true);
if (!$resp['success']) {
error($config['error']['captcha']);
}
}
if ($config['captcha']['post_captcha'] || ($post['op'] && $config['captcha']['thread_captcha'])) {
$ch = curl_init($config['captcha']['provider_check'] . "?" . http_build_query([
'mode' => 'check',
'text' => $_POST['captcha_text'],
'cookie' => $_POST['captcha_cookie']
]));
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
$resp = json_decode(curl_exec($ch), true);
if (!$resp['success']) {
error($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($config['error']['referer']);
}
if ($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']);
}
} else {
$mod = $post['mod'] = false;
}
// some nasty shit
if (!$post['mod'] && !$config['turn_off_antispam']) {
$tempBoard = $board['uri'];
$extra_salt = null;
if (isset($_POST['active-page'])) {
if ($_POST['active-page'] === 'index') {
$extra_salt = $config['try_smarter'] && isset($_POST['page']) ? 0 - (int)$_POST['page'] : null;
} elseif ($_POST['active-page'] === 'ukko') {
$tempBoard = 'overboard';
} elseif ($_POST['active-page'] === 'thread' && isset($post['thread'])) {
$extra_salt = $post['thread'];
}
}
$post['antispam_hash'] = checkSpam([$tempBoard, $extra_salt]);
if ($post['antispam_hash'] === true) {
error($config['error']['spam']);
}
}
if ($config['robot_enable'] && $config['robot_mute']) {
checkMute();
}
//Check if thread exists
if (!$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['embeds'] as &$embed) {
if (preg_match($embed['regex'], trim($value), $matches)) {
// Valid link
$post['embed'] = $matches[0];
// This is bad, lol.
$post['no_longer_require_an_image_for_op'] = true;
if ($embed['service'] == 'youtube') {
$post['embed'] = preg_replace('/\bshorts\b\//i', 'watch?v=', $post['embed']);
}
if (isset($embed['oembed']) && !empty($embed['oembed'])) {
$json_str = @file_get_contents(sprintf($embed['oembed'], $post['embed']));
if (!$json_str) {
unset($post['embed']); // invalid link
break;
}
$_json = json_decode($json_str);
$post['embed'] = json_encode(['title' => $_json->title, 'url' => $post['embed']], JSON_UNESCAPED_UNICODE);
} else {
$post['embed'] = json_encode(['title' => '', 'url' => $post['embed']]);
}
break;
}
}
if (!isset($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['show_countryballs_single'] && isset($_POST['cbsingle'])) {
$post['showcountryball'] = true;
}
if ($config['hide_poster_id_thread'] && $post['op']) {
$post['hideposterid'] = isset($_POST['hideposterid']);
}
$post['name'] = !empty($_POST['name']) ? $_POST['name'] : $config['anonymous'];
$post['subject'] = $_POST['subject'];
$post['email'] = str_replace(' ', '%20', htmlspecialchars($_POST['email']));
$post['body'] = $_POST['body'];
$post['password'] = sha256Salted($_POST['password']);
$post['has_file'] = (($post['op'] && !isset($post['no_longer_require_an_image_for_op']) && $config['force_image_op']) || count($_FILES) > 0);
$post['shadow'] = 0;
if (isset($_POST['rmexif']) && $post['has_file'] && $config['strip_exif_single']) {
$config['strip_exif'] = true;
}
if (!($post['has_file'] || isset($post['embed'])) || (($post['op'] && $config['force_body_op']) || (!$post['op'] && $config['force_body']))) {
$stripped_whitespace = preg_replace('/^[\pZ\pC]+|[\pZ\pC]+$/u', '', $post['body']);
if (empty($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']);
}
}
if ($post['has_file']) {
// Determine size sanity
$size = 0;
if ($config['multiimage_method'] == 'split') {
foreach ($_FILES as $key => $file) {
if(is_array($file['size'])) {
foreach($file['size'] as $fsize) {
$size += $fsize;
}
} else {
$size += $file['size'];
}
}
} elseif ($config['multiimage_method'] == 'each') {
foreach ($_FILES as $key => $file) {
if(is_array($file['size'])) {
foreach($file['size'] as $fsize) {
if ($fsize > $size) {
$size = $fsize;
}
}
} else {
if ($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)) {
$name = !empty($matches[2]) ? $matches[2] : $config['anonymous'];
$cap = $matches[3];
foreach ($config['mod']['capcode'] as $mod_level => $capcode_group) {
if ($mod['type'] < $mod_level) {
break;
}
foreach ($capcode_group as $capcode) {
if (strcasecmp($cap, $capcode) == 0) {
$post['capcode'] = utf8tohtml($capcode);
$post['name'] = $name;
}
}
}
}
$trip = generate_tripcode($post['name']);
$post['name'] = $trip[0];
$post['trip'] = isset($trip[1]) ? $trip[1] : ''; // XX: 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 => $file) {
if(is_array($file['size'])) {
// Turn the $_FILES[] -> into a workable array
$tmp_fi_file = array();
for($fi = 0; $fi < count($file['size']); $fi++) {
foreach ($file as $fi_key => $fi_val) {
$tmp_fi_file[$fi][$fi_key] = $fi_val[$fi];
}
}
// Add all files
foreach($tmp_fi_file as $fi_key => $fi_file) {
if ($fi_file['size'] && $fi_file['tmp_name']) {
$post['files'][] = process_filenames($fi_file, $board['uri'], sizeof($_FILES) > 1 || sizeof($file['size']) > 1, $i);
$i++;
}
}
} else {
if ($file['size'] && $file['tmp_name']) {
$post['files'][] = process_filenames($file, $board['uri'], sizeof($_FILES) > 1, $i);
$i++;
}
}
}
}
if (empty($post['files'])) {
$post['has_file'] = false;
} else {
if (isset($post['embed']) && sizeof($post['files']) === $config['max_images']) {
error(sprintf(_('You cannot upload %s images and embed at the same time. Please remove one image to continue.'), $config['max_images']));
}
}
// Check for a file
if ($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']);
}
// Fix for line count in max chars
$post['body'] = str_replace(array("\r\n", "\n\r"), "\n", $post['body']);
// Check string lengths
if (mb_strlen($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 (mb_strlen($post['body']) <= $config['min_body'] && $post['op']) {
error(sprintf(_('OP must be at least %d chars.'), $config['min_body']));
}
if (mb_strlen($post['password']) > 64) {
error(sprintf($config['error']['toolong'], 'password'));
}
wordfilters($post['body']);
$post['body'] = escape_markup_modifiers($post['body']);
if ($mod && isset($post['raw']) && $post['raw']) {
$post['body'] .= "\n<tinyboard raw html>1</tinyboard>";
}
if (($config['countryballs'] && !$config['allow_no_country']) ||
($config['countryballs'] && $config['allow_no_country'] &&
!isset($_POST['no_country'])) || isset($post['showcountryball'])) {
$post['flag_iso'] = forcedIPflags($_SERVER['REMOTE_ADDR']);
if ($post['flag_iso']) {
$post['flag_ext'] = $config['mod']['forcedflag_countries'][$post['flag_iso']];
} else {
list($post['flag_iso'], $post['flag_ext']) = getMaxmind($_SERVER['REMOTE_ADDR']);
}
}
if ($config['user_flag'] && isset($_POST['user_flag']) && !empty($_POST['user_flag'])) {
$post['flag_iso'] = $_POST['user_flag'];
if (!isset($config['user_flags'][$post['flag_iso']])) {
error(_('Invalid flag selection!'));
}
$post['flag_ext'] = isset($user_flag_alt) ? $user_flag_alt : $config['user_flags'][$post['flag_iso']];
}
$post['body_nomarkup'] = $post['body']; // Assume we're using the utf8mb4 charset
$post['tracked_cites'] = markup($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']);
$file['is_a_video'] = in_array($file['extension'], ['webm', 'mp4']);
// 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']);
}
/* md5 hash */
$hash = md5_hash_of_file($config, $upload);
$file['hash'] = $hash;
// Add Hashes as an imploded string
$allhashes .= $hash . ':';
// Add list of filenames
$post['allhashes_filenames'][] = $file['filename'];
if ($file['is_an_image'] && $config['blockhash']['hashban'] && $blockhash = blockhash_hash_of_file($upload)) {
if (!verifyUnbannedHash($config, $blockhash)) {
undoImage($post);
error($config['error']['blockhash']);
}
$file['blockhash'] = $blockhash;
}
}
// Remove exsessive ":" from imploded list
$allhashes = substr_replace($allhashes, '', -1);
$post['allhashes'] = $allhashes;
if (count($post['files']) == 1) {
$post['filehash'] = $hash;
} else {
$post['filehash'] = md5($allhashes);
}
}
if (!hasPermission($config['mod']['bypass_filters'], $board['uri'])) {
require_once 'inc/filters.php';
do_filters($post, $config);
}
if ($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(filename: $upload, length: 255);
if (preg_match($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']);
}
if ($config['convert_auto_orient'] && ($size[2] == IMAGETYPE_JPEG)) {
// The following code corrects the image orientation.
// Currently only works with the 'convert' option selected but it could easily be expanded to work with the rest if you can be bothered.
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']) && $exif['Orientation'] != 1) {
if ($config['convert_manual_orient']) {
$error = shell_exec_error(($gm ? 'gm ' : '') . 'convert ' .
escapeshellarg($file['tmp_name']) . ' ' .
ImageConvert::jpeg_exif_orientation(false, $exif) . ' ' .
(
$config['strip_exif'] ? '+profile "*"' :
($config['use_exiftool'] ? '' : '+profile "*"')
) . ' ' .
escapeshellarg($file['tmp_name']));
if ($config['use_exiftool'] && !$config['strip_exif']) {
if ($exiftool_error = shell_exec_error(
'exiftool -overwrite_original -q -q -orientation=1 -n ' .
escapeshellarg($file['tmp_name'])
)) {
error(_('exiftool failed!'), null, $exiftool_error);
}
} else {
// TODO: Find another way to remove the Orientation tag from the EXIF profile
// without needing `exiftool`.
}
} else {
$error = shell_exec_error(($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']);
}