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073246ed8d
vichan/post.php
Savetheinternet 073246ed8d optionally disable image requirement for new threads
2011-12-18 08:48:16 +11:00

621 lines
21 KiB
PHP
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<?php
require 'inc/functions.php';
require 'inc/display.php';
require 'inc/template.php';
require 'inc/database.php';
require 'inc/user.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']) ||
!isset($_POST['password'])
)
error($config['error']['bot']);
$password = &$_POST['password'];
if(empty($password))
error($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']);
// Check if banned
checkBan($board['uri']);
if(empty($delete))
error($config['error']['nodelete']);
foreach($delete as &$id) {
$query = prepare(sprintf("SELECT `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 = $query->fetch()) {
if(!empty($password) && $post['password'] != $password)
error($config['error']['invalidpassword']);
if($post['time'] >= time() - $config['delete_time']) {
error(sprintf($config['error']['delete_too_soon'], until($post['time'] + $config['delete_time'])));
}
if(isset($_POST['file'])) {
// Delete just the file
deleteFile($id);
} else {
// Delete entire post
deletePost($id);
}
}
}
buildIndex();
$is_mod = isset($_POST['mod']) && $_POST['mod'];
$root = $is_mod ? $config['root'] . $config['file_mod'] . '?/' : $config['root'];
header('Location: ' . $root . $board['dir'] . $config['file_index'], true, $config['redirect_http']);
} elseif(isset($_POST['report'])) {
if( !isset($_POST['board']) ||
!isset($_POST['password']) ||
!isset($_POST['reason'])
)
error($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']);
// Check if banned
checkBan($board['uri']);
if(empty($report))
error($config['error']['noreport']);
if(count($report) > $config['report_limit'])
error($config['error']['toomanyreports']);
$reason = &$_POST['reason'];
markup($reason);
foreach($report as &$id) {
$query = prepare(sprintf("SELECT 1 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()) {
$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['id'], PDO::PARAM_INT);
$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'];
header('Location: ' . $root . $board['dir'] . $config['file_index'], true, $config['redirect_http']);
} elseif(isset($_POST['post'])) {
if($config['field_disable_name'])
$_POST['name'] = $config['anonymous']; // "forced anonymous"
if($config['field_disable_email'])
$_POST['email'] = '';
if($config['field_disable_password'])
$_POST['password'] = '';
if( !isset($_POST['name']) ||
!isset($_POST['email']) ||
!isset($_POST['subject']) ||
!isset($_POST['body']) ||
!isset($_POST['board']) ||
!isset($_POST['password'])
) error($config['error']['bot']);
$post = Array('board' => $_POST['board']);
if(isset($_POST['thread'])) {
$OP = false;
$post['thread'] = round($_POST['thread']);
} else $OP = true;
if(!(($OP && $_POST['post'] == $config['button_newtopic']) ||
(!$OP && $_POST['post'] == $config['button_reply'])))
error($config['error']['bot']);
// Check the referrer
if(!isset($_SERVER['HTTP_REFERER']) || !preg_match($config['referer_match'], $_SERVER['HTTP_REFERER']))
error($config['error']['referer']);
checkDNSBL();
// Check if board exists
if(!openBoard($post['board']))
error($config['error']['noboard']);
// 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($config['error']['captcha']);
}
}
if(checkSpam())
error($config['error']['spam']);
if($config['robot_enable'] && $config['robot_mute']) {
checkMute();
}
//Check if thread exists
if(!$OP) {
$query = prepare(sprintf("SELECT `sticky`,`locked`,`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 = $query->fetch()) {
// Non-existant
error($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 &$embed) {
if($html = preg_replace($embed[0], $embed[1], $value)) {
if($html == $value) {
// Nope.
continue;
}
// Width and height
$html = str_replace('%%tb_width%%', $config['embed_width'], $html);
$html = str_replace('%%tb_height%%', $config['embed_height'], $html);
// Validated. It works.
$post['embed'] = $html;
// This looks messy right now, I know. I'll work on a better alternative later.
$post['no_longer_require_an_image_for_op'] = true;
break;
}
}
if(!isset($post['embed'])) {
error($config['error']['invalid_embed']);
}
}
// Check for a file
if($OP && !isset($post['no_longer_require_an_image_for_op'])) {
if(!isset($_FILES['file']['tmp_name']) || empty($_FILES['file']['tmp_name']) && $config['force_image_op'])
error($config['error']['noimage']);
}
$post['name'] = (!empty($_POST['name'])?$_POST['name']:$config['anonymous']);
$post['subject'] = $_POST['subject'];
$post['email'] = utf8tohtml($_POST['email']);
$post['body'] = $_POST['body'];
$post['password'] = $_POST['password'];
$post['has_file'] = !isset($post['embed']) && (($OP && !isset($post['no_longer_require_an_image_for_op']) && $config['force_image_op']) || (isset($_FILES['file']) && !empty($_FILES['file']['tmp_name'])));
$post['mod'] = isset($_POST['mod']) && $_POST['mod'];
if($post['has_file'])
$post['filename'] = utf8tohtml(get_magic_quotes_gpc() ? stripslashes($_FILES['file']['name']) : $_FILES['file']['name']);
if(!($post['has_file'] || isset($post['embed'])) || (($OP && $config['force_body_op']) || (!$OP && $config['force_body']))) {
$stripped_whitespace = preg_replace('/[\s]/u', '', $post['body']);
if(empty($stripped_whitespace )) {
error($config['error']['tooshort_body']);
}
}
if($post['mod']) {
require 'inc/mod.php';
if(!$mod) {
// Liar. You're not a mod.
error($config['error']['notamod']);
}
$post['sticky'] = $OP && isset($_POST['sticky']);
$post['locked'] = $OP && isset($_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']);
}
// Check if thread is locked
// but allow mods to post
if(!$OP && (!$mod || $mod['type'] < $config['mod']['postinlocked'])) {
if($thread['locked'])
error($config['error']['locked']);
}
if($post['has_file']) {
$size = $_FILES['file']['size'];
if($size > $config['max_filesize'])
error(sprintf3($config['error']['filesize'], array(
'sz'=>commaize($size),
'filesz'=>commaize($size),
'maxsz'=>commaize($config['max_filesize']))));
}
if($mod && $mod['type'] >= MOD && preg_match('/^((.+) )?## (.+)$/', $post['name'], $match)) {
if(($mod['type'] == MOD && $match[3] == 'Mod') || $mod['type'] >= ADMIN) {
$post['capcode'] = utf8tohtml($match[3]);
$post['name'] = !empty($match[2])?$match[2]:$config['anonymous'];
}
} else {
$post['capcode'] = false;
}
$trip = generate_tripcode($post['name']);
$post['name'] = $trip[0];
$post['trip'] = (isset($trip[1])?$trip[1]:'');
if(strtolower($post['email']) == 'noko') {
$noko = true;
$post['email'] = '';
} else $noko = false;
if($post['has_file']) {
$post['extension'] = strtolower(substr($post['filename'], strrpos($post['filename'], '.') + 1));
if(isset($config['filename_func']))
$post['file_id'] = $config['filename_func']($post);
else
$post['file_id'] = time() . substr(microtime(), 2, 3);
$post['file'] = $board['dir'] . $config['dir']['img'] . $post['file_id'] . '.' . $post['extension'];
$post['thumb'] = $board['dir'] . $config['dir']['thumb'] . $post['file_id'] . '.' . ($config['thumb_ext'] ? $config['thumb_ext'] : $post['extension']);
}
// Check string lengths
if(mb_strlen($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($post['password']) > 20)
error(sprintf($config['error']['toolong'], 'password'));
wordfilters($post['body']);
$post['body_nomarkup'] = $post['body'];
if(!($mod && isset($post['raw']) && $post['raw']))
$post['tracked_cites'] = markup($post['body'], true);
// Check for a flood
if(!($mod && $mod['type'] >= $config['mod']['flood']) && checkFlood($post)) {
error($config['error']['flood']);
}
// Custom anti-spam filters
if(isset($config['flood_filters'])) {
foreach($config['flood_filters'] as &$filter) {
unset($did_not_match);
// Set up default stuff
if(!isset($filter['action']))
$filter['action'] = 'reject';
if(!isset($filter['message']))
$filter['message'] = 'Posting throttled by flood filter.';
foreach($filter['condition'] as $condition => $value) {
if($condition == 'posts_in_past_x_minutes' && isset($value[0]) && isset($value[1])) {
// Check if there's been X posts in the past X minutes (on this board)
$query = prepare(sprintf("SELECT COUNT(*) AS `posts` FROM `posts_%s` WHERE `time` >= :time", $board['uri']));
$query->bindValue(':time', time() - ($value[1] * 60), PDO::PARAM_INT);
$query->execute() or error(db_error($query));
if(($count = $query->fetch()) && $count['posts'] >= $value[0]) {
// Matched filter
continue;
}
} elseif($condition == 'threads_with_no_replies_in_past_x_minutes' && isset($value[0]) && isset($value[1])) {
// Check if there's been X new empty threads posted in the past X minutes (on this board)
// Confusing query. I couldn't think of anything simpler...
$query = prepare(sprintf("SELECT ((SELECT COUNT(*) FROM `posts_%s` WHERE `thread` IS NULL AND `time` >= :time) - COUNT(DISTINCT(`threads`.`id`))) AS `posts` FROM `posts_%s` AS `threads` INNER JOIN `posts_%s` AS `replies` ON `replies`.`thread` = `threads`.`id` WHERE `threads`.`thread` IS NULL AND `threads`.`time` >= :time", $board['uri'], $board['uri'], $board['uri']));
$query->bindValue(':time', time() - ($value[1] * 60), PDO::PARAM_INT);
$query->execute() or error(db_error($query));
if(($count = $query->fetch()) && $count['posts'] >= $value[0]) {
// Matched filter
continue;
}
} elseif($condition == 'name') {
if(preg_match($value, $post['name']))
continue;
} elseif($condition == 'trip') {
if(preg_match($value, $post['trip']))
continue;
} elseif($condition == 'email') {
if(preg_match($value, $post['email']))
continue;
} elseif($condition == 'subject') {
if(preg_match($value, $post['subject']))
continue;
} elseif($condition == 'body') {
if(preg_match($value, $post['body_nomarkup']))
continue;
} elseif($condition == 'extension') {
if($post['has_file'] && preg_match($value, $post['extension']))
continue;
} elseif($condition == 'filename') {
if($post['has_file'] && preg_match($value, $post['filename']))
continue;
} elseif($condition == 'has_file') {
if($value == $post['has_file'])
continue;
} elseif($condition == 'ip') {
if(preg_match($value, $_SERVER['REMOTE_ADDR']))
continue;
} elseif($condition == 'OP') {
// Am I OP?
if($value == $OP)
continue;
} else {
// Unknown block
continue;
}
$did_not_match = true;
break;
}
if(!isset($did_not_match)) {
// Matched filter!
if(isset($filter) && $filter['action'] == 'reject') {
error($filter['message']);
}
}
}
}
if($post['has_file']) {
if(!in_array($post['extension'], $config['allowed_ext']) && !in_array($post['extension'], $config['allowed_ext_files']))
error($config['error']['unknownext']);
$is_an_image = !in_array($post['extension'], $config['allowed_ext_files']);
// Truncate filename if it is too long
$post['filename'] = substr($post['filename'], 0, $config['max_filename_len']);
// Move the uploaded file
if(!@move_uploaded_file($_FILES['file']['tmp_name'], $post['file'])) error($config['error']['nomove']);
if($is_an_image) {
// Check IE MIME type detection XSS exploit
$buffer = file_get_contents($post['file'], null, null, null, 255);
if(preg_match($config['ie_mime_type_detection'], $buffer)) {
undoImage($post);
error($config['error']['mime_exploit']);
}
require_once 'inc/image.php';
if($config['imagick']) {
// This is tricky, because Imagick won't let us find
// an image's dimensions without loading it all into
// memory first, unlike GD which provides the
// getimagesize() to do exactly that. This section
// is why GD is required, even when using Imagick
// instead. There doesn't seem to be an alternative.
// Necessary for security, as Imagick even ignores
// PHP's memory limit.
// first try GD's getimagesize()
if($size = @getimagesize($post['file'])) {
if($size[0] > $config['max_width'] || $size[1] > $config['max_height']) {
file_unlink($post['file']);
error($config['error']['maxsize']);
}
} else {
// GD failed
// TODO?
}
} else {
// find dimensions of an image using GD
if(!$size = @getimagesize($post['file'])) {
file_unlink($post['file']);
error($config['error']['invalidimg']);
}
if($size[0] > $config['max_width'] || $size[1] > $config['max_height']) {
file_unlink($post['file']);
error($config['error']['maxsize']);
}
}
// create image object
$image = new Image($post['file'], $post['extension']);
if($image->size->width > $config['max_width'] || $image->size->height > $config['max_height']) {
$image->delete();
error($config['error']['maxsize']);
}
$post['width'] = $image->size->width;
$post['height'] = $image->size->height;
if($config['spoiler_images'] && isset($_POST['spoiler'])) {
$post['thumb'] = 'spoiler';
$size = @getimagesize($config['spoiler_image']);
$post['thumbwidth'] = $size[0];
$post['thumbheight'] = $size[1];
} elseif($config['minimum_copy_resize'] &&
$image->size->width <= $config['thumb_width'] &&
$image->size->height <= $config['thumb_height'] &&
$post['extension'] == ($config['thumb_ext'] ? $config['thumb_ext'] : $post['extension'])) {
// Copy, because there's nothing to resize
copy($post['file'], $post['thumb']);
$post['thumbwidth'] = $image->size->width;
$post['thumbheight'] = $image->size->height;
} else {
$thumb = $image->resize($config['thumb_ext'] ? $config['thumb_ext'] : $post['extension'], $config['thumb_width'], $config['thumb_height']);
$thumb->to($post['thumb']);
$post['thumbwidth'] = $thumb->width;
$post['thumbheight'] = $thumb->height;
$thumb->_destroy();
}
$image->destroy();
} else {
// not an image
//copy($config['file_thumb'], $post['thumb']);
$post['thumb'] = 'file';
$size = @getimagesize($config['file_thumb']);
$post['thumbwidth'] = $size[0];
$post['thumbheight'] = $size[1];
}
$post['filehash'] = $config['file_hash']($post['file']);
$post['filesize'] = filesize($post['file']);
}
if($post['has_file'] && $config['image_reject_repost'] && $p = getPostByHash($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']
:
$p['id'] . '.html'
)
));
}
if(!($mod && $mod['type'] >= $config['mod']['postunoriginal']) && $config['robot_enable'] && checkRobot($post['body_nomarkup'])) {
undoImage($post);
if($config['robot_mute']) {
error(sprintf($config['error']['muted'], mute()));
} else {
error($config['error']['unoriginal']);
}
}
// Remove DIR_* before inserting them into the database.
if($post['has_file']) {
$post['file'] = substr_replace($post['file'], '', 0, mb_strlen($board['dir'] . $config['dir']['img']));
if($is_an_image && $post['thumb'] != 'spoiler')
$post['thumb'] = substr_replace($post['thumb'], '', 0, mb_strlen($board['dir'] . $config['dir']['thumb']));
}
$id = post($post, $OP);
if(isset($post['tracked_cites'])) {
foreach($post['tracked_cites'] as $cite) {
$query = prepare('INSERT INTO `cites` VALUES (:board, :post, :target_board, :target)');
$query->bindValue(':board', $board['uri']);
$query->bindValue(':post', $id, PDO::PARAM_INT);
$query->bindValue(':target_board',$cite[0]);
$query->bindValue(':target', $cite[1], PDO::PARAM_INT);
$query->execute() or error(db_error($query));
}
}
buildThread(($OP?$id:$post['thread']));
if(!$OP && strtolower($post['email']) != 'sage' && !$thread['sage'] && ($config['reply_limit'] == 0 || numPosts($post['thread']) < $config['reply_limit'])) {
bumpThread($post['thread']);
}
if($OP)
clean();
buildIndex();
if(isset($_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'] . '?/' : $config['root'];
if($config['always_noko'] || $noko) {
$redirect = $root . $board['dir'] . $config['dir']['res'] . sprintf($config['file_page'], $OP?$id:$post['thread']) . (!$OP?'#'.$id:'');
} else {
$redirect = $root . $board['dir'] . $config['file_index'];
}
if($config['syslog'])
_syslog(LOG_INFO, 'New post: /' . $board['dir'] . $config['dir']['res'] . sprintf($config['file_page'], $OP?$id:$post['thread']) . (!$OP?'#'.$id:''));
rebuildThemes('post');
header('Location: ' . $redirect, true, $config['redirect_http']);
} else {
if(!file_exists($config['has_installed'])) {
header('Location: install.php', true, $config['redirect_http']);
} else {
// They opened post.php in their browser manually.
error($config['error']['nopost']);
}
}
?>
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