513 lines
23 KiB
PHP
513 lines
23 KiB
PHP
<?php
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include "config.inc.php";
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include ("$file_newsportal");
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include $config_dir."/gpg.conf";
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$logfile = $logdir.'/mail.log';
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$lockfile = $lockdir . '/rslight-bbsmail.lock';
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$pid = file_get_contents($lockfile);
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if (posix_getsid($pid) === false || !is_file($lockfile)) {
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print "Starting BBSmail...\n";
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file_put_contents($lockfile, getmypid()); // create lockfile
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} else {
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print "BBSmail currently running\n";
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exit;
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}
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$bbsmail_path=$spooldir."/bbsmail/";
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if(!is_dir($bbsmail_path.'in')) {
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mkdir($bbsmail_path.'in', 0700, true);
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}
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if(!is_dir($bbsmail_path.'out')) {
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mkdir($bbsmail_path.'out', 0700, true);
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}
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// Set up gnupg
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putenv("GNUPGHOME=".$rslight_gpg['gnupghome']);
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$res = gnupg_init();
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$gnupg_summary = array(
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"1" => "The signature is fully valid",
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"2" => "The signature is good",
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"4" => "The signature is bad",
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"16" => "One key has been revoked",
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"32" => "One key has expired",
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"64" => "The signature has expired",
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"128" => "Can't verify: key missing",
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"256" => "CRL not available",
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"512" => "Available CRL is too old",
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"1024" => "A policy was not met",
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"2048" => "A system error occured"
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);
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$gnupg_validity = array(
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"0" => "Validity: UNKNOWN",
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"1" => "Validity: UNDEFINED",
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"2" => "Validity: NEVER",
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"3" => "Validity: MARGINAL",
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"4" => "Validity: FULL",
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"5" => "Validity: ULTIMATE"
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);
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/***** Send mail *****/
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// $messages=scandir($bbsmail_path.'/out/');
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/***** Receive mail *****/
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unset($messages);
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$messages = array_diff(scandir($bbsmail_path.'/in/'), array('..', '.'));
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foreach($messages as $message) {
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$filename = explode($bbsmail_path.'/in/', $message);
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$filename = $filename[0];
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// Put message data into array $inspect[]
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if(($inspect = inspect_message($bbsmail_path.'/in/'.$message, $filename)) == false) {
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continue;
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}
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if($inspect['type'] == 'mailkey') {
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if(($info = verify_gpg_signature($res, $inspect['body'])) == true) {
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echo 'GOOD signature in: "'.$filename.'"'."\n";
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file_put_contents($logfile, "\n".format_log_date()." ".$config_name.' GOOD signature in: "'.$filename.'"', FILE_APPEND);
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// Do we already have this key?
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if(gnupg_keyinfo($res, $inspect['mailkey_domain']) !== false) { // Yes, we do
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file_put_contents($logfile, "\n".format_log_date()." ".$config_name.' Key already in keyring for: '.$inspect['mailkey_domain'], FILE_APPEND);
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} else { // No, we don't
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file_put_contents($logfile, "\n".format_log_date()." ".$config_name.' Key not found in keyring for: '.$inspect['mailkey_domain'], FILE_APPEND);
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}
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} else {
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echo 'BAD or UNKNOWN signature in: "'.$filename.'"'."\n";
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file_put_contents($logfile, "\n".format_log_date()." ".$config_name.' BAD or UNKNOWN signature in: "'.$filename.'"', FILE_APPEND);
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get_key_from_message($res, $inspect);
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}
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}
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if($inspect['type'] == 'bbsmail') {
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$info = gnupg_decryptverify($res,$inspect['body'],$plaintext);
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if($info !== false) {
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if($info[0]['summary'] > 3) {
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echo $gnupg_summary[$info[0]['summary']]." in: ".$filename."\n";
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file_put_contents($logfile, "\n".format_log_date()." ".$config_name." ".$gnupg_summary[$info[0]['summary']]." in: ".$filename, FILE_APPEND);
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$inspect['mailkey_domain'] = preg_replace('/rslight@/', '', $inspect['from']);
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$inspect['mailkey_location'] = $inspect['mailkey_domain'].'/pubkey/server_pubkey.txt';
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get_key_from_message($res, $inspect);
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} else {
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echo 'GOOD signature in: "'.$filename.'"'."\n";
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file_put_contents($logfile, "\n".format_log_date()." ".$config_name.' GOOD signature in: "'.$filename.'"', FILE_APPEND);
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// Now let's get and import the mail message
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// Does the @from match the signature domain?
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$inspect = inspect_bbsmail($res, $plaintext);
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$keyinfo = gnupg_keyinfo($res, $info[0]['fingerprint']);
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$signature_domain = preg_replace('/rslight@/', '', $keyinfo[0]['uids'][0]['uid']);
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$bbsmail_domain = preg_replace('/rslight@/', '', $inspect['bbsmail_from']);
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if(($signature_domain == $bbsmail_domain) && ($signature_domain == $inspect['bbsmail_domain'])) { // Yes, the domains match
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echo "THE DOMAINS MATCH. OK TO IMPORT MESSAGE\n";
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echo $plaintext;
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print_r($inspect);
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$mail_from = $inspect['bbsmail_sender'].'@'.$inspect['bbsmail_domain'];
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$rcpt_to = $inspect['bbsmail_recipient'];
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$date = strtotime($inspect['bbsmail_date']);
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if(!isset($inspect['bbsmail_sender']) || !isset($inspect['bbsmail_recipient']) || !isset($inspect['bbsmail_sender']) || !isset($inspect['bbsmail_body'])) {
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echo "Incomplete Headers... Aborting Message Import\n";
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} else {
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import_user_message($mail_from, $rcpt_to, $date, $inspect['bbsmail_subject'], $inspect['bbsmail_body']);
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}
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} else { // No, the domains DO NOT MATCH
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echo "DOMAIN MISMATCH\n";
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}
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}
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} else {
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$error = gnupg_geterror($res);
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echo 'BAD signature in: "'.$filename.'"'."\n";
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echo $error."\n";
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file_put_contents($logfile, "\n".format_log_date()." ".$config_name.' BAD signature in: "'.$filename.'" '.$error, FILE_APPEND);
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$inspect['mailkey_domain'] = preg_replace('/rslight@/', '', $inspect['from']);
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$inspect['mailkey_location'] = $inspect['mailkey_domain'].'/pubkey/server_pubkey.txt';
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get_key_from_message($res, $inspect);
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}
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}
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}
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/***** Send key to group *****/
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// How often to send key to group
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// in seconds (default 1 month)
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$mail_update_time = 2592000;
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$do_mail_update = false;
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if(filemtime($spooldir.'/bbs-mail-update-timer') + $mail_update_time > time()) { //false
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if(is_file($config_dir.'/bbs-mail-debug')) { //true
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$do_mail_update = true;
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}
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} else { //true
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$do_mail_update = true;
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}
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if($do_mail_update == true) {
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echo "Sending keys to ".$rslight_gpg['nntp_group']."\n";
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send_keys_to_group($res, $rslight_gpg);
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touch($spooldir.'/bbs-mail-update-timer');
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}
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function import_user_message($from, $rcpt, $date, $subject, $message) {
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global $config_dir, $spooldir;
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if(($to = get_config_value('aliases.conf', strtolower($rcpt))) == false) {
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$to = strtolower($rcpt);
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}
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$to = trim($to);
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if(strlen($subject) < 1) {
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$subject = "(no subject)";
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}
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$database = $spooldir.'/mail.db3';
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$dbh = mail_db_open($database);
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if(!$dbh) {
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echo "Database error\n";
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return false;
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}
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$msgid = '<'.md5(strtolower($to).strtolower($from).strtolower($subject).strtolower($message)).'>';
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$sql = 'INSERT OR IGNORE INTO messages(msgid, mail_from, rcpt_to, rcpt_target, date, subject, message, from_hide, to_hide, mail_viewed, rcpt_viewed) VALUES(?,?,?,?,?,?,?,?,?,?,?)';
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$stmt = $dbh->prepare($sql);
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$target = "local";
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$mail_viewed = null;
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$rcpt_viewed = null;
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$q = $stmt->execute([$msgid, $from, $to, $target, intval($date), $subject, $message, null, null, $mail_viewed, $rcpt_viewed]);
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$dbh = null;
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return true;
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}
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function send_admin_message($admin, $from, $subject, $message) {
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global $config_dir, $spooldir;
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if(($to = get_config_value('aliases.conf', strtolower($admin))) == false) {
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$to = strtolower($admin);
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}
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$to = trim($to);
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$from = $to;
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$database = $spooldir.'/mail.db3';
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$dbh = mail_db_open($database);
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if(!$dbh) {
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echo "Database error\n";
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return false;
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}
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$date = time();
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$msgid = '<'.md5(strtolower($to).strtolower($from).strtolower($subject).strtolower($message)).'>';
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$sql = 'INSERT OR IGNORE INTO messages(msgid, mail_from, rcpt_to, rcpt_target, date, subject, message, from_hide, to_hide, mail_viewed, rcpt_viewed) VALUES(?,?,?,?,?,?,?,?,?,?,?)';
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$stmt = $dbh->prepare($sql);
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$target = "local";
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$mail_viewed = "true";
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$rcpt_viewed = null;
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$q = $stmt->execute([$msgid, $from, $to, $target, $date, $subject, $message, null, null, $mail_viewed, $rcpt_viewed]);
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$dbh = null;
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return true;
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}
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function get_key_from_message($res, $inspect) {
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global $logfile, $config_name;
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// Let's try to get the key
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echo "Let's try to get the key\n";
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file_put_contents($logfile, "\n".format_log_date()." ".$config_name." Let's try to get the key", FILE_APPEND);
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// Display stuff for testing
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echo "Domain: ".$inspect['mailkey_domain']."\n";
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file_put_contents($logfile, "\n".format_log_date()." ".$config_name." Domain: ".$inspect['mailkey_domain'], FILE_APPEND);
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echo "Location: ".$inspect['mailkey_location']."\n";
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file_put_contents($logfile, "\n".format_log_date()." ".$config_name." Location: ".$inspect['mailkey_location'], FILE_APPEND);
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$location = "http://".$inspect['mailkey_location'];
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$import = gnupg_import($res, file_get_contents($location));
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if($import) {
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echo "IMPORTED: ".$import['fingerprint']."\n";
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file_put_contents($logfile, "\n".format_log_date()." ".$config_name." IMPORTED: ".$import['fingerprint'], FILE_APPEND);
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// Verify that domain in IMPORTED KEY matches exactly: "Location" and "Domain" in MAILKEY message
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// If it DOES NOT, then DELETE the new key immediately
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$keyinfo = gnupg_keyinfo($res, $import['fingerprint']);
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$imported_domain = preg_replace('/rslight@/', '', $keyinfo[0]['uids'][0]['uid']);
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$mailkey_location = explode('/', $inspect['mailkey_location']);
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if(($imported_domain == $inspect['mailkey_domain']) && ($imported_domain == $mailkey_location[0])) {
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echo "Domain Match: ".$imported_domain."\n";
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file_put_contents($logfile, "\n".format_log_date()." ".$config_name." Domain Match: ".$imported_domain, FILE_APPEND);
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file_put_contents($logfile, "\n".format_log_date()." ".$config_name." New PGP Key added for: ".$imported_domain." Domain: ".$imported_domain."\nFingerprint: ".$import['fingerprint'], FILE_APPEND);
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send_admin_message('admin', 'admin', 'New PGP Key added for: '.$imported_domain, 'Domain: '.$imported_domain."\nFingerprint: ".$import['fingerprint']."\n");
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return true;
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} else {
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echo "Domain MIS-MATCH: ".$imported_domain." DELETING...\n";
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file_put_contents($logfile, "\n".format_log_date()." ".$config_name." Domain MIS-MATCH: ".$imported_domain." DELETING...", FILE_APPEND);
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if(gnupg_deletekey($res, $import['fingerprint'])) {
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echo "SUCCESS Deleting ".$import['fingerprint']."\n";
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file_put_contents($logfile, "\n".format_log_date()." ".$config_name." SUCCESS Deleting ".$import['fingerprint'], FILE_APPEND);
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} else {
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echo "WARNING!: FAILED to Delete ".$import['fingerprint']."\n";
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file_put_contents($logfile, "\n".format_log_date()." ".$config_name." WARNING!: FAILED to Delete ".$import['fingerprint'], FILE_APPEND);
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}
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return false;
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}
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} else {
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echo "Failed to import key from ".$location."\n";
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file_put_contents($logfile, "\n".format_log_date()." ".$config_name." Failed to import key from ".$location, FILE_APPEND);
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return false;
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}
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}
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function inspect_bbsmail($res, $plaintext) {
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$bbsmail_header = 0;
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$bbsmail_body = 0;
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$plaintext = explode("\n", $plaintext);
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foreach($plaintext as $line) {
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if(strpos($line, '@@BEGIN BBSMAIL HEADERS') !== false) {
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$bbsmail_header = 1;
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}
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if($bbsmail_header == 1) {
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if(strpos($line, 'From: ') !== false) {
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$bbsmail = explode("From: ", $line);
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$return_data['bbsmail_from'] = trim($bbsmail[1]);
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} else {
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if(strpos($line, 'Version: ') !== false) {
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$bbsmail = explode("Version: ", $line);
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$return_data['bbsmail_version'] = trim($bbsmail[1]);
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} else {
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if(strpos($line, 'Notice-ID: ') !== false) {
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$bbsmail = explode("Notice-ID: ", $line);
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$return_data['bbsmail_notice-id'] = trim($bbsmail[1]);
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}
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}
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}
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if(strpos($line, 'Key: ') !== false) {
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$bbsmail = explode("Key: ", $line);
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$return_data['bbsmail_key'] = trim($bbsmail[1]);
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} else {
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if(strpos($line, 'Location: ') !== false) {
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$bbsmail = explode("Location: ", $line);
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$return_data['bbsmail_location'] = trim($bbsmail[1]);
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} else {
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if(strpos($line, 'Domain: ') !== false) {
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$bbsmail = explode("Domain: ", $line);
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$return_data['bbsmail_domain'] = trim($bbsmail[1]);
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}
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}
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}
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}
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if(strpos($line, '@@BEGIN BBSMAIL BODY') !== false) {
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$bbsmail_header = 0;
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$bbsmail_body = 1;
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continue;
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}
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if($bbsmail_body == 1) {
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if(strpos($line, 'Sender: ') !== false) {
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$bbsmail = explode("Sender: ", $line);
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$return_data['bbsmail_sender'] = trim($bbsmail[1]);
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} else {
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if(strpos($line, 'Recipient: ') !== false) {
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$bbsmail = explode("Recipient: ", $line);
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$return_data['bbsmail_recipient'] = trim($bbsmail[1]);
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} else {
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if(strpos($line, 'Date: ') !== false) {
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$bbsmail = explode("Date: ", $line);
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$return_data['bbsmail_date'] = trim($bbsmail[1]);
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} else {
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if(strpos($line, 'Subject: ') !== false) {
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$bbsmail = explode("Subject: ", $line);
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$return_data['bbsmail_subject'] = trim($bbsmail[1]);
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} else {
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if(strpos($line, 'Body: ') !== false) {
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$bbsmail = explode("Body: ", $line);
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$return_data['bbsmail_body'] = trim($bbsmail[1]);
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}
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}
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}
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}
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}
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}
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if(strpos($line, '@@END BBSMAIL BODY') !== false) {
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continue;
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}
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if(trim($line) == '.') {
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$line = ' ';
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}
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if($bbsmail_body == 1) {
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if(!isset($return_data['body'])) {
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$line = ltrim($line);
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}
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// $return_data['body'].= $line;
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}
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}
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return($return_data);
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}
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function inspect_message($message, $filename) {
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global $logfile, $config_name;
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$header = array();
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$body = array();
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$return_data = array();
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if(strpos($message, 'bbsmail-MAILKEY notice')) {
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file_put_contents($logfile, "\n".format_log_date()." ".$config_name." Found MAILKEY message ".$filename, FILE_APPEND);
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} else {
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if(strpos($message, 'bbsmail-BBSMAIL notice')) {
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$return_data['type'] = 'bbsmail';
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file_put_contents($logfile, "\n".format_log_date()." ".$config_name." Found BBSMAIL message ".$filename, FILE_APPEND);
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} else {
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file_put_contents($logfile, "\n".format_log_date()." ".$config_name." Found UNKNOWN message ".$filename, FILE_APPEND);
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return false;
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}
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}
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$raw_message = file($message);
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$is_header = 1;
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$mailkey_header = 0;
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$mailkey_body = 0;
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foreach($raw_message as $line) {
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if(trim($line) == '' && $is_header == 1) {
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$is_header = 0;
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continue;
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}
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if($is_header == 1) {
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$return_data['header'].=$line;
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if(strpos($line, 'From: ') !== false) {
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$from_line = explode("From: ", $line);
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$from = trim($from_line[1]);
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$return_data['from'] = $from;
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}
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if(strpos($line, 'Subject: ') !== false) {
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$subject_line = explode("Subject: ", $line);
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$subject = trim($subject_line[1]);
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if(strpos($subject, '@@RSL MAILKEY notice') !== false) {
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$return_data['type'] = 'mailkey';
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} else {
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if(strpos($subject, '@@RSL BBSMAIL notice') !== false) {
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$return_data['type'] = 'bbsmail';
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} else {
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return false;
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}
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}
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}
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$header[] = $line;
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} else {
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$return_data['body'].=$line;
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if($return_data['type'] == 'mailkey') {
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if(strpos($line, '@@BEGIN MAILKEY HEADERS') !== false) {
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$mailkey_header = 1;
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}
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if($mailkey_header == 1) {
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if(strpos($line, 'From: ') !== false) {
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$mailkey = explode("From: ", $line);
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$return_data['mailkey_from'] = trim($mailkey[1]);
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} else {
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if(strpos($line, 'Version: ') !== false) {
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$mailkey = explode("Version: ", $line);
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$return_data['mailkey_version'] = trim($mailkey[1]);
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} else {
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if(strpos($line, 'Notice-ID: ') !== false) {
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$mailkey = explode("Notice-ID: ", $line);
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$return_data['mailkey_notice-id'] = trim($mailkey[1]);
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}
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}
|
|
}
|
|
}
|
|
if(strpos($line, '@@BEGIN MAILKEY BODY') !== false) {
|
|
$mailkey_body = 1;
|
|
$mailkey_header = 0;
|
|
}
|
|
if($mailkey_body == 1) {
|
|
if(strpos($line, 'Key: ') !== false) {
|
|
$mailkey = explode("Key: ", $line);
|
|
$return_data['mailkey_key'] = trim($mailkey[1]);
|
|
} else {
|
|
if(strpos($line, 'Location: ') !== false) {
|
|
$mailkey = explode("Location: ", $line);
|
|
$return_data['mailkey_location'] = trim($mailkey[1]);
|
|
} else {
|
|
if(strpos($line, 'Domain: ') !== false) {
|
|
$mailkey = explode("Domain: ", $line);
|
|
$return_data['mailkey_domain'] = trim($mailkey[1]);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
if(trim($line) == '.') {
|
|
$line = ' ';
|
|
}
|
|
}
|
|
}
|
|
}
|
|
return($return_data);
|
|
}
|
|
|
|
function send_keys_to_group($res, $rslight_gpg) {
|
|
global $spooldir, $config_name, $mail_update_time, $CONFIG, $rslight_version;
|
|
|
|
$cwd = getcwd();
|
|
$keydir = preg_replace('/spoolnews/','pubkey/',$cwd);
|
|
$key_location = "/pubkey/server_pubkey.txt";
|
|
$signing_key = trim(file_get_contents($keydir.'/server_fingerprint.txt'));
|
|
$fingerprint_clean = preg_replace('/\ /', '', $signing_key);
|
|
gnupg_addsignkey($res,$fingerprint_clean)."\n";
|
|
|
|
$start="@@BEGIN MAILKEY HEADERS";
|
|
$begin="@@BEGIN MAILKEY BODY";
|
|
$end="@@END MAILKEY BODY";
|
|
|
|
/* Get days since last sent for creating message-id
|
|
* (Don't allow posting more than once per day)
|
|
*/
|
|
$date1 = date_create(date("Y-m-d", time() - $mail_update_time));
|
|
$date2 = date_create(date("Y-m-d", time()));
|
|
$diff_days = date_diff($date1,$date2);
|
|
|
|
$outgoing_dir = $spooldir.'/'.$config_name.'/outgoing';
|
|
if(!is_dir($outgoing_dir)) {
|
|
mkdir($outgoing_dir, 0700, true);
|
|
}
|
|
$domain = $rslight_gpg['domain_name'];
|
|
$organization = $CONFIG['organization'];
|
|
$from = $rslight_gpg['from_email'];
|
|
$contact = $rslight_gpg['contact'];
|
|
|
|
$outgoing_file = tempnam($outgoing_dir, 'bbsmail-');
|
|
|
|
$body='';
|
|
$body.="******************************************************\n";
|
|
$body.="THIS IS A TEST POST! DO NOT USE THIS FOR A REAL SITE!\n";
|
|
$body.="******************************************************\n\n";
|
|
$body.="You may use this to import the public key for $domain.\n";
|
|
$body.="This message is automatically generated by $from.\n\n";
|
|
|
|
$body.="This message was signed using the following key:\n";
|
|
$body.="$signing_key\n\n";
|
|
|
|
$body.="The GPG key needed to verify the signature of messages\n";
|
|
$body.="issued by $from is available at:\n";
|
|
$body.="$domain$key_location\n\n";
|
|
|
|
$body.="For information contact $contact.\n\n";
|
|
|
|
$body.=$start."\n";
|
|
$body.=' Version: '.$rslight_version."\n";
|
|
$body.=' From: '.$from."\n";
|
|
$hashtail = hash('crc32', $domain.$organization.$from.$rslight_gpg['nntp_group']);
|
|
$thishash = hash('crc32', $body.$diff_days->format("%a").$hashtail).hash('crc32', $signing_key);
|
|
$body.=" Notice-ID: ".$thishash."\n";
|
|
|
|
$body.=$begin."\n";
|
|
$body.=" Key: ".$signing_key."\n";
|
|
$body.=" Location: ".$domain.$key_location."\n";
|
|
$body.=" Domain: ".$domain."\n";
|
|
$body.=$end."\n";
|
|
|
|
$header='';
|
|
$header.="From: $from\n";
|
|
$header.="Newsgroups: ".$rslight_gpg['nntp_group']."\n";
|
|
$header.="Subject: @@RSL MAILKEY notice ".$thishash."\n";
|
|
$header.="Message-ID: <$thishash@$domain>\n";
|
|
$header.="Content-Type: text/plain; charset=utf-8; format=flowed\n";
|
|
$header.="Content-Transfer-Encoding: 8bit\n";
|
|
$header.="Organization: $organization\n\n";
|
|
|
|
$signed_body = gnupg_sign($res, $body);
|
|
file_put_contents($outgoing_file, $header.$signed_body);
|
|
echo "Posted <".$thishash."@".$domain.">\n\n";
|
|
}
|
|
|