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<?php
/*
* Copyright (c) 2016 vichan-devel
*/
defined('TINYBOARD') or exit;
function gen_msgid($board, $id) {
global $config;
$b = preg_replace("/[^0-9a-zA-Z$]/", 'x', $board);
$salt = sha1($board . "|" . $id . "|" . $config['nntpchan']['salt']);
$salt = substr($salt, 0, 7);
$salt = base_convert($salt, 16, 36);
return "<$b.$id.$salt@".$config['nntpchan']['domain'].">";
}
function gen_nntp($headers, $files) {
$content = null;
if ((is_countable($files) ? count($files) : 0) == 0) {
}
else if ((is_countable($files) ? count($files) : 0) == 1 && $files[0]['type'] == 'text/plain') {
$content = $files[0]['text'] . "\r\n";
$headers['Content-Type'] = "text/plain; charset=UTF-8";
}
else {
$boundary = sha1((string) $headers['Message-Id']);
$content = "";
$headers['Content-Type'] = "multipart/mixed; boundary=$boundary";
foreach ($files as $file) {
$content .= "--$boundary\r\n";
if (isset($file['name'])) {
$file['name'] = preg_replace('/[\r\n\0"]/', '', $file['name']);
$content .= "Content-Disposition: form-data; filename=\"$file[name]\"; name=\"attachment\"\r\n";
}
$type = explode('/', (string) $file['type'])[0];
if ($type == 'text') {
$file['type'] .= '; charset=UTF-8';
}
$content .= "Content-Type: $file[type]\r\n";
if ($type != 'text' && $type != 'message') {
$file['text'] = base64_encode((string) $file['text']);
$content .= "Content-Transfer-Encoding: base64\r\n";
}
$content .= "\r\n";
$content .= $file['text'];
$content .= "\r\n";
}
$content .= "--$boundary--\r\n";
$headers['Mime-Version'] = '1.0';
}
//$headers['Content-Length'] = strlen($content);
$headers['Date'] = date('r', $headers['Date']);
$out = "";
foreach ($headers as $id => $val) {
$val = str_replace("\n", "\n\t", (string) $val);
$out .= "$id: $val\r\n";
}
$out .= "\r\n";
$out .= $content;
return $out;
}
function nntp_publish($msg, $id) {
global $config;
$server = $config["nntpchan"]["server"];
$s = fsockopen("tcp://$server");
fgets($s);
fputs($s, "MODE STREAM\r\n");
fgets($s);
fputs($s, "TAKETHIS $id\r\n");
fputs($s, (string) $msg);
fputs($s, "\r\n.\r\n");
fgets($s);
fputs($s, "QUIT\r\n");
fclose($s);
}
function post2nntp($post, $msgid) {
global $config;
$headers = [];
$files = [];
$headers['Message-Id'] = $msgid;
$headers['Newsgroups'] = $config['nntpchan']['group'];
$headers['Date'] = time();
$headers['Subject'] = $post['subject'] ?: "None";
$headers['From'] = $post['name'] . " <poster@" . $config['nntpchan']['domain'] . ">";
if ($post['email'] == 'sage') {
$headers['X-Sage'] = true;
}
if (!$post['op']) {
// Get muh parent
$query = prepare("SELECT `message_id` FROM ``nntp_references`` WHERE `board` = :board AND `id` = :id");
$query->bindValue(':board', $post['board']);
$query->bindValue(':id', $post['thread']);
$query->execute() or error(db_error($query));
if ($result = $query->fetch(PDO::FETCH_ASSOC)) {
$headers['References'] = $result['message_id'];
}
else {
return false; // We don't have OP. Discarding.
}
}
// Let's parse the body a bit.
$body = trim((string) $post['body_nomarkup']);
$body = preg_replace('/\r?\n/', "\r\n", $body);
$body = preg_replace_callback('@>>(>/([a-zA-Z0-9_+-]+)/)?([0-9]+)@', function($o) use ($post) {
if ($o[1]) {
$board = $o[2];
}
else {
$board = $post['board'];
}
$id = $o[3];
$query = prepare("SELECT `message_id_digest` FROM ``nntp_references`` WHERE `board` = :board AND `id` = :id");
$query->bindValue(':board', $board);
$query->bindValue(':id', $id);
$query->execute() or error(db_error($query));
if ($result = $query->fetch(PDO::FETCH_ASSOC)) {
return ">>".substr((string) $result['message_id_digest'], 0, 18);
}
else {
return $o[0]; // Should send URL imo
}
}, $body);
$body = preg_replace('/>>>>([0-9a-fA-F])+/', '>>\1', $body);
$files[] = ['type' => 'text/plain', 'text' => $body];
foreach ($post['files'] as $id => $file) {
$fc = [];
$fc['type'] = $file['type'];
$fc['text'] = file_get_contents($file['file_path']);
$fc['name'] = $file['name'];
$files[] = $fc;
}
return [$headers, $files];
}
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