<?php

/*

* Copyright (c) 2010-2014 Tinyboard Development Group

*/

require "./inc/functions.php";

require "./inc/anti-bot.php";

// Fix for magic quotes

if (get_magic_quotes_gpc()) {

function strip_array($var) {

return is_array($var) ? array_map('strip_array', $var) : stripslashes($var);

}

$_GET = strip_array($_GET);

$_POST = strip_array($_POST);

}

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];

}

}

if (checkDNSBL()) error("Tor users may not delete posts.");

// Check if board exists

if (!openBoard($_POST['board']))

error($config['error']['noboard']);

// Check if banned

checkBan($board['uri']);

// Check if deletion enabled

if (!$config['allow_delete'])

error(_('Users are not allowed to delete their own posts on this board.'));

if (empty($delete))

error($config['error']['nodelete']);

foreach ($delete as &$id) {

$query = prepare(sprintf("SELECT `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 ($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'])));

}

if (isset($_POST['file'])) {

// Delete just the file

deleteFile($id);

modLog("User deleted file from his own post #$id");

} else {

// Delete entire post

deletePost($id);

modLog("User deleted his own post #$id");

}

_syslog(LOG_INFO, 'Deleted post: ' .

'/' . $board['dir'] . $config['dir']['res'] . sprintf($config['file_page'], $post['thread'] ? $post['thread'] : $id) . ($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];

}

}

if (checkDNSBL()) error("Tor users may not report posts.");

// Check if board exists

if (!openBoard($_POST['board']))

error($config['error']['noboard']);

// 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']) {

$resp = file_get_contents($config['captcha']['provider_check'] . "?" . http_build_query([

'mode' => 'check',

'text' => $_POST['captcha_text'],

'extra' => $config['captcha']['extra'],

'cookie' => $_POST['captcha_cookie']

]));

if ($resp !== '1') {

$error = $config['error']['captcha'];

}

}

if (isset($error)) {

if ($config['report_captcha']) {

$captcha = generate_captcha($config['captcha']['extra']);

} else {

$captcha = null;

}

$body = Element('report.html', array('board' => $board, 'config' => $config, 'error' => $error, 'reason_prefill' => $_POST['reason'], 'post' => 'delete_'.$report[0], 'captcha' => $captcha, 'global' => isset($_POST['global'])));

echo Element('page.html', ['config' => $config, 'body' => $body]);

die();

}

$reason = escape_markup_modifiers($_POST['reason']);

markup($reason);

foreach ($report as &$id) {

$query = prepare(

"SELECT

`thread`,

`post_clean`.`clean_local`,

`post_clean`.`clean_global`

FROM `posts_{$board['uri']}`

LEFT JOIN `post_clean`

ON `post_clean`.`board_id` = '{$board['uri']}'

AND `post_clean`.`post_id` = :id

WHERE `id` = :id"

);

$query->bindValue(':id', $id, PDO::PARAM_INT);

$query->execute() or error(db_error($query));

if( $post = $query->fetch(PDO::FETCH_ASSOC) ) {

$report_local = !$post['clean_local'];

$report_global = isset($_POST['global']) && !$post['clean_global'];

if( $report_local || $report_global ) {

$thread = $post['thread'];

if ($config['syslog']) {

_syslog(LOG_INFO, 'Reported post: ' .

'/' . $board['dir'] . $config['dir']['res'] . sprintf($config['file_page'], $thread ? $thread : $id) . ($thread ? '#' . $id : '') .

' for "' . $reason . '"'

);

}

$query = prepare("INSERT INTO `reports` (`time`, `ip`, `board`, `post`, `reason`, `local`, `global`) VALUES (:time, :ip, :board, :post, :reason, :local, :global)");

$query->bindValue(':time', time(), PDO::PARAM_INT);

$query->bindValue(':ip', $_SERVER['REMOTE_ADDR'], PDO::PARAM_STR);

$query->bindValue(':board', $board['uri'], PDO::PARAM_INT);

$query->bindValue(':post', $id, PDO::PARAM_INT);

$query->bindValue(':reason', $reason, PDO::PARAM_STR);

$query->bindValue(':local', $report_local, PDO::PARAM_BOOL);

$query->bindValue(':global', $report_global, PDO::PARAM_BOOL);

$query->execute() or error(db_error($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('page.html', array('config' => $config, 'body' => '<div style="text-align:center"><a href="javascript:window.close()">[ ' . _('Close window') ." ]</a> <a href='$index'>[ " . _('Return') . ' ]</a></div>', 'title' => _('Report submitted!')));

} else {

header('Content-Type: text/json');

echo json_encode(array('success' => true));

}

}

elseif (isset($_POST['post'])) {

if (!isset($_POST['body'], $_POST['board'], $_POST['message']) || $_POST['message'] != '') {

error($config['error']['bot']);

}

$post = array(

'board' => $_POST['board'],

'files' => array(),

'time' => time(), // Timezone independent UNIX timecode.

);

// Check if board exists

if (!openBoard($post['board']))

error($config['error']['noboard']);

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;

// The dnsbls is an optional DNS blacklist include.

// Squelch warnings if it doesn't exist.

if (!$config['captcha']['enabled'] && !($post['op'] && $config['new_thread_capt'])) {

@include "./inc/dnsbls.php";

}

// 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($_POST['recaptcha_challenge_field']) || !isset($_POST['recaptcha_response_field']))

error($config['error']['bot']);

// Check what reCAPTCHA has to say...

$resp = recaptcha_check_answer($config['recaptcha_private'],

$_SERVER['REMOTE_ADDR'],

$_POST['recaptcha_challenge_field'],

$_POST['recaptcha_response_field']);

if (!$resp->is_valid) {

error($config['error']['captcha']);

}

}

// Same, but now with our custom captcha provider

//if ($config['captcha']['enabled']) {

//New thread captcha

if (($config['captcha']['enabled']) || (($post['op']) && ($config['new_thread_capt'])) ) {

$resp = file_get_contents($config['captcha']['provider_check'] . "?" . http_build_query([

'mode' => 'check',

'text' => $_POST['captcha_text'],

'extra' => $config['captcha']['extra'],

'cookie' => $_POST['captcha_cookie']

]));

if ($resp !== '1') {

error($config['error']['captcha'] .

'<script>if (actually_load_captcha !== undefined) actually_load_captcha("'.$config['captcha']['provider_get'].'", "'.$config['captcha']['extra'].'");</script>');

}

}

//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']);

}

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 && $config['enable_antibot'])

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` 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']);

}

}

// 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 ($config['image_reject_repost']) {

if ($p = getPostByEmbed($post['embed'])) {

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 ($p = getPostByEmbedInThread($post['embed'], $post['thread'])) {

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'

))

));

}

}

}

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_email_selectbox'] && $_POST['email'] != 'sage')

$_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'])) {

$post['file_url'] = $_POST['file_url'];

if (!preg_match('@^https?://@', $post['file_url']))

error($config['error']['invalidimg']);

if (mb_strpos($post['file_url'], '?') !== false)

$url_without_params = mb_substr($post['file_url'], 0, mb_strpos($post['file_url'], '?'));

else

$url_without_params = $post['file_url'];

$post['extension'] = strtolower(mb_substr($url_without_params, mb_strrpos($url_without_params, '.') + 1));

if ($post['op'] && $config['allowed_ext_op']) {

if (!in_array($post['extension'], $config['allowed_ext_op']))

error($config['error']['unknownext']);

}

else if (!in_array($post['extension'], $config['allowed_ext']) && !in_array($post['extension'], $config['allowed_ext_files']))

error($config['error']['unknownext']);

$post['file_tmp'] = tempnam($config['tmp'], 'url');

function unlink_tmp_file($file) {

@unlink($file);

fatal_error_handler();

}

register_shutdown_function('unlink_tmp_file', $post['file_tmp']);

$fp = fopen($post['file_tmp'], 'w');

$curl = curl_init();

curl_setopt($curl, CURLOPT_URL, $post['file_url']);

curl_setopt($curl, CURLOPT_FAILONERROR, true);

curl_setopt($curl, CURLOPT_FOLLOWLOCATION, false);

curl_setopt($curl, CURLOPT_CONNECTTIMEOUT, 5);

curl_setopt($curl, CURLOPT_TIMEOUT, $config['upload_by_url_timeout']);

curl_setopt($curl, CURLOPT_USERAGENT, 'Tinyboard');

curl_setopt($curl, CURLOPT_BINARYTRANSFER, true);

curl_setopt($curl, CURLOPT_FILE, $fp);

curl_setopt($curl, CURLOPT_PROTOCOLS, CURLPROTO_HTTP | CURLPROTO_HTTPS);

if (curl_exec($curl) === false)

error($config['error']['nomove'] . '<br/>Curl says: ' . curl_error($curl));

curl_close($curl);

fclose($fp);

$_FILES['file'] = array(

'name' => basename($url_without_params),

'tmp_name' => $post['file_tmp'],

'file_tmp' => true,

'error' => 0,

'size' => filesize($post['file_tmp'])

);

}

$post['name'] = $_POST['name'] != '' ? $_POST['name'] : $config['anonymous'];

$post['subject'] = $_POST['subject'];

$post['email'] = str_replace(' ', '%20', htmlspecialchars($_POST['email']));

if (isset($_POST['no-bump'])) {

if (!empty($post['email'])) {

$post['email'] .= '+sage';

} else {

$post['email'] = 'sage';

}

}

$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']) && $config['force_image_op']) || !empty($_FILES['file']['name'])));

// Handle our Tor users

$tor = checkDNSBL();

if ($tor && !(isset($_SERVER['HTTP_X_TOR'], $_SERVER['REMOTE_ADDR']) && $_SERVER['REMOTE_ADDR'] == '127.0.0.2' && $_SERVER['HTTP_X_TOR'] = 'true'))

error('To post on 8chan over Tor, you must use the hidden service for security reasons. You can find it at <a href="http://fullchan4jtta4sx.onion">http://fullchan4jtta4sx.onion</a>.');

if ($tor && $post['has_file'] && !$config['tor_image_posting'])

error('Sorry. Tor users can\'t upload files on this board.');

if ($tor && !$config['tor_posting'])

error('Sorry. The owner of this board has decided not to allow Tor posters for some reason...');

if ($post['has_file'] && $config['disable_images']) {

error($config['error']['images_disabled']);

}

if (!($post['has_file'] || isset($post['embed'])) || (($post['op'] && $config['force_body_op']) || (!$post['op'] && $config['force_body']))) {

// http://stackoverflow.com/a/4167053

$stripped_whitespace = preg_replace('/^[\pZ\pC]+|[\pZ\pC]+$/u', '', $post['body']);

if ($stripped_whitespace == '') {

error($config['error']['tooshort_body']);

}

}

if ($config['force_subject_op'] && $post['op']) {

$stripped_whitespace = preg_replace('/^[\pZ\pC]+|[\pZ\pC]+$/u', '', $post['subject']);

if ($stripped_whitespace == '') {

error(_('It is required to enter a subject when starting a new thread on this board.'));

}

}

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) {

$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'], $matches) && (in_array($board['uri'], $mod['boards']) or $mod['boards'][0] == '*')) {

$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] : '';

$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 ($file['size'] && $file['tmp_name']) {

$file['filename'] = urldecode(get_magic_quotes_gpc() ? stripslashes($file['name']) : $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'] = $config['dir']['img_root'] . $board['dir'] . $config['dir']['img'] . $file['file_id'] . '.' . $file['extension'];

while (file_exists ($file['file'])) {

$file['file_id'] .= rand(0,9);

$file['file'] = $config['dir']['img_root'] . $board['dir'] . $config['dir']['img'] . $file['file_id'] . '.' . $file['extension'];

}

$file['thumb'] = $config['dir']['img_root'] . $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;

// 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']);

}

// 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 on this board.'), $config['min_body']));

if (mb_strlen($post['password']) > 20)

error(sprintf($config['error']['toolong'], 'password'));

wordfilters($post['body']);

if ($config['max_newlines'] > 0) {

preg_match_all("/\n/", $post['body'], $nlmatches);

if (isset($nlmatches[0]) && sizeof($nlmatches[0]) > $config['max_newlines'])

error(sprintf(_('Your post contains too many lines. This board only allows %d maximum.'), $config['max_newlines']));

}

$post['body'] = escape_markup_modifiers($post['body']);

if ($mod && isset($post['raw']) && $post['raw']) {

$post['body'] .= "\n<tinyboard raw html>1</tinyboard>";

}

if (($config['country_flags'] && (!$config['allow_no_country'] || $config['force_flag'])) || ($config['country_flags'] && $config['allow_no_country'] && !isset($_POST['no_country']))) {

require 'inc/lib/geoip/geoip.inc';

$gi=geoip\geoip_open('inc/lib/geoip/GeoIPv6.dat', GEOIP_STANDARD);

function ipv4to6($ip) {

}

$country_code = geoip\geoip_country_code_by_addr_v6($gi, ipv4to6($_SERVER['REMOTE_ADDR']));

$country_name = geoip\geoip_country_name_by_addr_v6($gi, ipv4to6($_SERVER['REMOTE_ADDR']));

if (!$country_code) $country_code = 'A1';

if (!$country_name) $country_name = 'Unknown';

$post['body'] .= "\n<tinyboard flag>".strtolower($country_code)."</tinyboard>".

"\n<tinyboard flag alt>$country_name</tinyboard>";

}

if ($config['user_flag'] && isset($_POST['user_flag'])) {

if (!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];

$post['body'] .= "\n<tinyboard flag>" . strtolower($user_flag) . "</tinyboard>" .

"\n<tinyboard flag alt>" . $flag_alt . "</tinyboard>";

} else if ($config['force_flag']) {

error(_('You must choose a flag to post on this board!'));

}

}

if ($config['allowed_tags'] && $post['op'] && isset($_POST['tag']) && $_POST['tag'] && isset($config['allowed_tags'][$_POST['tag']])) {

$post['body'] .= "\n<tinyboard tag>" . $_POST['tag'] . "</tinyboard>";

}

if (mysql_version() >= 50503) {

$post['body_nomarkup'] = $post['body']; // 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', $post['body'], -1, PREG_SPLIT_NO_EMPTY);

$post['body_nomarkup'] = '';

foreach ($chars as $char) {

$o = 0;

$ord = ordutf8($char, $o);

if ($ord >= 0x010000)

continue;

$post['body_nomarkup'] .= $char;

}

}

$post['tracked_cites'] = markup($post['body'], true, $post['op']);

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']);

$md5cmd = $config['bsd_md5'] ? 'md5 -r' : 'md5sum';

if( ($output = shell_exec_error("cat " . escapeshellarg($upload) . " | $md5cmd")) !== false ) {

$explodedvar = explode(' ', $output);

$hash = $explodedvar[0];

} else {

$hash = md5_file($upload);

}

// filter files by MD5

$query = prepare('SELECT * FROM ``filters`` WHERE `type` = "md5" and `value` = :value');

$query->bindValue(':value', $hash);

$result = $query->execute() or error(db_error());

if ($row = $query->fetch()) {

$reason = utf8tohtml($row['reason']);

error("Sorry, cannot upload. Matched MD5 of disallowed file. Reason: {$reason}");

}

$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'])) {

require_once 'inc/filters.php';

do_filters($post);

}

if ($post['has_file']) {

foreach ($post['files'] as $key => &$file) {

if ($file['is_an_image'] && $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 ($size[0] > $config['max_width'] || $size[1] > $config['max_height']) {

error($config['error']['maxsize']);

}

if ($config['convert_auto_orient'] && ($file['extension'] == 'jpg' || $file['extension'] == '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 (!($config['redraw_image'] || (($config['strip_exif'] && !$config['use_exiftool']) && ($file['extension'] == 'jpg' || $file['extension'] == 'jpeg')))) {

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($file['tmp_name']) . ' -auto-orient ' . escapeshellarg($upload));

}

if ($error)

error(_('Could not auto-orient image!'), null, $error);

$size = @getimagesize($file['tmp_name']);

if ($config['strip_exif'])

$file['exif_stripped'] = true;

}

}

}

}

// 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();

}

if ($config['redraw_image'] || (!@$file['exif_stripped'] && $config['strip_exif'] && ($file['extension'] == 'jpg' || $file['extension'] == 'jpeg'))) {

if (!$config['redraw_image'] && $config['use_exiftool']) {

if($error = shell_exec_error('exiftool -overwrite_original -ignoreMinorErrors -q -q -all= ' .

escapeshellarg($file['tmp_name'])))

error(_('Could not strip EXIF metadata!'), null, $error);

} else {

$image->to($file['file']);

$dont_copy_file = true;

}

}

$image->destroy();

} else {

// not an image

//copy($config['file_thumb'], $post['thumb']);

$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];

}

if (!isset($dont_copy_file) || !$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'

))

));

}

}

}

if (!hasPermission($config['mod']['postunoriginal'], $board['uri']) && $config['robot_enable'] && checkRobot($post['body_nomarkup'])) {

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($config['dir']['img_root'] . $board['dir'] . $config['dir']['img']));

if ($file['is_an_image'] && $file['thumb'] != 'spoiler')

$file['thumb'] = mb_substr($file['thumb'], mb_strlen($config['dir']['img_root'] . $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;

if ($post['files'])

$post['files'] = $post['files'];

$post['num_files'] = sizeof($post['files']);

// Commit the post to the database.

$post['id'] = $id = post($post);

if (!$tor) insertFloodPost($post);

// Update statistics for this board.

updateStatisticsForPost( $post );

// Handle cyclical threads

if (!$post['op'] && isset($thread['cycle']) && $thread['cycle']) {

// Query is a bit weird due to "This version of MariaDB doesn't yet support 'LIMIT & IN/ALL/ANY/SOME subquery'" (MariaDB Ver 15.1 Distrib 10.0.17-MariaDB, for Linux (x86_64))

$query = prepare(sprintf('SELECT `id` FROM ``posts_%s`` WHERE `thread` = :thread AND `id` NOT IN (SELECT `id` FROM (SELECT `id` FROM ``posts_%s`` WHERE `thread` = :thread ORDER BY `id` DESC LIMIT :limit) i)', $board['uri'], $board['uri']));

$query->bindValue(':thread', $post['thread']);

$query->bindValue(':limit', $config['cycle_limit'], PDO::PARAM_INT);

$query->execute() or error(db_error($query));

while ($dpost = $query->fetch()) {

deletePost($dpost['id'], false, false);

}

}

if (isset($post['antispam_hash'])) {

incrementSpamHash($post['antispam_hash']);

}