#!/usr/bin/php -q
<?php
/***************************************************************************
* copyright            : (C) 2001-2003 Advanced Internet Designs Inc.
* email                : forum@prohost.org
* $Id: maillist.php,v 1.1.1.2 2004/09/17 04:49:37 kazuyan Exp $
*
* This program is free software; you can redistribute it and/or modify it 
* under the terms of the GNU General Public License as published by the 
* Free Software Foundation; either version 2 of the License, or 
* (at your option) any later version.
***************************************************************************/

class fud_emsg
{
	var $subject, $body, $headers, $to, $from_email, $from_name, $ip, $msg_id;
	var $subject_cleanup_rgx, $body_cleanup_rgx, $subject_cleanup_rep, $body_cleanup_rep;
	var $user_id;
	var $reply_to_msg_id;
	var $reply_to, $thread_id;
	var $raw_msg;
	var $body_s, $body_sc;
	var $attachments;

	function read_data($data='')
	{
		$this->raw_msg = !$data ? file_get_contents("php://stdin") : $data;
	}

	function split_hdr_body()
	{
		if (!preg_match("!^(.*?)\r?\n\r?\n(.*)!s", $this->raw_msg, $m)) {
			return;
		}

		$this->body = $m[2];
		$this->headers = $m[1];
	}

	function format_header()
	{
		$this->headers = str_replace("\r\n", "\n", $this->headers);
		// cleanup multiline headers
		$this->headers = preg_replace("!\n(\t| )+!", ' ', $this->headers);
		$hdr = explode("\n", trim($this->headers));
		$this->headers = array();
		foreach ($hdr as $v) {
			$hk = substr($v, 0, ($p = strpos($v, ':')));
			// Skip non-valid header lines
			if (empty($hk) || ($v[++$p] != ' ' && $v[$p] != "\t")) {
				continue;
			}

			$hv = substr($v, $p);
			$hk = strtolower(trim($hk));

			if (!isset($this->headers[$hk])) {
				$this->headers[$hk] = decode_header_value($hv);
			} else {
				$this->headers[$hk] .= ' '.decode_header_value($hv);
			}
		}
	}

	function parse_multival_headers($val, $key)
	{
		if (($p = strpos($val, ';')) !== false) {
			$this->headers[$key] = strtolower(trim(substr($val, 0, $p)));
			$val = ltrim(substr($val, $p+1));
			if (!empty($val) && preg_match_all('!([-A-Za-z]+)="?(.*?)"?\s*(;|$)!', $val, $m)) {
				$c = count($m[0]);
				for ($i=0; $i<$c; $i++) {
					$this->headers['__other_hdr__'][$key][strtolower($m[1][$i])] = $m[2][$i];
				}
			}
		} else {
			$this->headers[$key] = strtolower(trim($val));
		}
	}

	function handle_content_headers()
	{
		// This functions performs special handling needed for parsing message data

		if (isset($this->headers['content-type'])) {
			$this->parse_multival_headers($this->headers['content-type'], 'content-type');
		} else {
			$this->headers['content-type'] = 'text/plain';
			$this->headers['__other_hdr__']['content-type']['charset'] = 'us-ascii';
		}

		if (isset($this->headers['content-disposition'])) {
			$this->parse_multival_headers($this->headers['content-disposition'], 'content-disposition');
		} else {
			$this->headers['content-disposition'] = 'inline';
		}
		if (isset($this->headers['content-transfer-encoding'])) {
			$this->parse_multival_headers($this->headers['content-transfer-encoding'], 'content-transfer-encoding');
		} else {
			$this->headers['content-transfer-encoding'] = '7bit';
		}
	}

	function boudry_split($boundry, $html)
	{
		$boundry = '--'.$boundry;
		$b_len = strlen($boundry);

		// Remove 1st & last boundry since they are not needed for our perpouses
		$this->body = substr($this->body, strpos($this->body, $boundry)+$b_len);
		$this->body = substr($this->body, 0, strrpos($this->body, $boundry)-$b_len-1);

		// Isolate boundry sections
		$tmp = explode($boundry, $this->body);

		$this->body_sc = 0;
		foreach ($tmp as $p) {
			// Parse inidividual body sections
			$this->body_s[$this->body_sc] = new fud_emsg;
			$this->body_s[$this->body_sc]->parse_input($html, $p, true);
			$this->body_sc++;
		}
	}

	function decode_body($html=0)
	{
		switch ($this->headers['content-type']) {
			case 'text/plain':
				$this->decode_message_body();
				break;
			case 'text/html':
				$this->decode_message_body();
				$this->body = (!$html ? strip_tags($this->body) : $this->body);
				break;
			case 'multipart/parallel': // Apparently same as multipart/mixed but order of body parts does not matter
	                case 'multipart/report': // RFC1892 ( 1st part is human readable, identical to multipart/mixed )
        	        case 'multipart/signed': // PGP or OpenPGP (appear same) ( 1st part is human readable )
			case 'multipart/alternative': // various alternate formats of message most common html or text
			case 'multipart/related': // ignore those, contains urls/links to 'stuff' on the net
 			case 'multipart/mixed':
 			case 'message/rfc822': // *scary*
				if (!isset($this->headers['__other_hdr__']['content-type']['boundary'])) {
					$this->body = '';
					return;
				}

				$this->boudry_split($this->headers['__other_hdr__']['content-type']['boundary'], $html);

				// In some cases in multi-part messages there will only be 1 body,
				// in those situations we assing that body and info to the primary message
				// and hide the fact this was multi-part message
				if ($this->body_sc == 1) {
					$this->body = $this->body_s[0]->body;
					$this->headers['__other_hdr__'] = $this->body_s[0]->headers['__other_hdr__'];
				} else if ($this->body_sc > 1) {
					// We got many bodies to pick from, Yey!. Lets find something we can use,
					// preference given to 'text/plain' or if not found go for 'text/html'

					$final_id = $html_id = null;

					for ($i = 0; $i < $this->body_sc; $i++) {
						switch ($this->body_s[$i]->headers['content-type']) {
							case 'text/html':
								if (!isset($html_id)) {
									$html_id = $i;
								}
								break;
							case 'text/plain':
								if (!isset($final_id)) {
									$final_id = $i;
								}
								break;
						}
						// look if message has any attached files
						if ($this->body_s[$i]->headers['content-disposition'] == 'attachment') {
							// Determine the file name
							if (isset($this->body_s[$i]->headers['__other_hdr__']['content-disposition']['filename'])) {
								$file_name = $this->body_s[$i]->headers['__other_hdr__']['content-disposition']['filename'];
							} else if (isset($this->body_s[$i]->headers['__other_hdr__']['content-type']['name'])) {
								$file_name = $this->body_s[$i]->headers['__other_hdr__']['content-type']['name'];
							} else { // No name for file, skipping
								continue;
							}

							$this->attachments[$file_name] = $this->body_s[$i]->body;
						}
					}

					if (!isset($final_id) && isset($html_id)) {
						$final_id = $html_id;
					}

					if (isset($final_id)) {
						$this->body = $this->body_s[$final_id]->body;
						if (isset($this->body_s[$final_id]->headers['__other_hdr__'])) {
							$this->headers['__other_hdr__'] = $this->body_s[$final_id]->headers['__other_hdr__'];
						}
					} else {
						$this->body = '';
					}
				} else { // Bad mail client didn't format message properly.
					$this->body = '';
				}
				break;
			default:
				$this->decode_message_body();
				break;

			// case 'multipart/digest':  will/can contain many messages, ignore for our perpouse
		}
	}

	function decode_message_body()
	{
		$this->body = decode_string($this->body, $this->headers['content-transfer-encoding']);
	}

	function parse_input($html=0, $data='', $internal=false)
	{
		$this->read_data($data);
		$this->split_hdr_body();
		$this->format_header();
		$this->handle_content_headers();
		$this->decode_body($html);
	}

	function fetch_useful_headers()
	{
		$this->subject = $this->headers['subject'];

		// Attempt to Get Poster's IP from fields commonly used to store it
		if (isset($this->headers['x-posted-by'])) {
			$this->ip = parse_ip($this->headers['x-posted-by']);
		} else if (isset($this->headers['x-originating-ip'])) {
			$this->ip = parse_ip($this->headers['x-originating-ip']);
		} else if (isset($this->headers['x-senderip'])) {
			$this->ip = parse_ip($this->headers['x-senderip']);
		} else if (isset($this->headers['x-mdremoteip'])) {
			$this->ip = parse_ip($this->headers['x-mdremoteip']);
		} else if (isset($this->headers['received'])) {
			$this->ip = parse_ip($this->headers['received']);
		}

		// Fetch From email and Possible name
		if (preg_match('!(.*?)<(.*?)>!', $this->headers['from'], $matches)) {
			$this->from_email = trim($matches[2]);

			if (!empty($matches[1])) {
				$matches[1] = trim($matches[1]);
				if ($matches[1][0] == '"' && substr($matches[1], -1) == '"') {
					$this->from_name = substr($matches[1], 1, -1);
				} else {
					$this->from_name = $matches[1];
				}
			} else {
				$this->from_name = $this->from_email;
			}

			if (preg_match('![^A-Za-z0-9\-_\s]!', $this->from_name)) {
				$this->from_name = substr($this->from_email, 0, strpos($this->from_email, '@'));
			}
		} else {
			$this->from_email = trim($this->headers['from']);
			$this->from_name = substr($this->from_email, 0, strpos($this->from_email, '@'));
		}

		if (empty($this->from_email) || empty($this->from_name)) {
			mlist_error_log("no name or email for ".$this->headers['from'], $this->raw_msg);
		}

		if (isset($this->headers['message-id'])) {
			$this->msg_id = substr(trim($this->headers['message-id']), 1, -1);
		} else {
			mlist_error_log("No message id", $this->raw_msg);
		}

		// This fetches the id of the message if this is a reply to an existing message
		if (!empty($this->headers['in-reply-to']) && preg_match('!.*<([^>]+)>$!', trim($this->headers['in-reply-to']), $match)) {
			$this->reply_to_msg_id = $match[1];
		} else if (!empty($this->headers['references']) && preg_match('!.*<([^>]+)>!', trim($this->headers['references']), $match)) {
			$this->reply_to_msg_id = $match[1];
		}
	}

	function clean_up_data()
	{
		if ($this->subject_cleanup_rgx) {
			$this->subject = trim(preg_replace($this->subject_cleanup_rgx, $this->subject_cleanup_rep, $this->subject));
		}
		if ($this->body_cleanup_rgx) {
			$this->body = trim(preg_replace($this->body_cleanup_rgx, $this->body_cleanup_rep, $this->body));
		}
	}
}

function mlist_error_log($error, $msg_data, $level='WARNING')
{
	$error_log_path = $GLOBALS['ERROR_PATH'].'.mlist/error_log';
	$err_msg_cpy = $GLOBALS['ERROR_PATH'].'.mlist/'.time().'_'.md5($msg_data);

	if ($level != 'LOG') {
		if (!($fp = fopen($err_msg_cpy, 'wb'))) {
			exit("no perms to write ".$err_msg_cpy."\n");
		}
		fwrite($fp, $msg_data);
		fclose($fp);
	} else {
		$err_msg_cpy = '';
	}

	if (!($fp = fopen($error_log_path, 'ab'))) {
		exit("no perms to write ".$error_log_path."\n");
	}
	fwrite($fp, $level." :: ".date("r")." :: ".$error." :: ".$err_msg_cpy."\n");
	fclose($fp);

	if ($level == 'ERROR') {
		exit;
	}
}
	define('forum_debug', 1);

	if (!ini_get("register_argc_argv")) {
		exit("Enable the 'register_argc_argv' php.ini directive\n");
	}
	if ($_SERVER['argc'] < 2) {
		exit("Missing Forum ID Paramater\n");
	}

	if (strncmp($_SERVER['argv'][0], '.', 1)) {
		require (dirname($_SERVER['argv'][0]) . '/GLOBALS.php');
	} else {
		require (getcwd() . '/GLOBALS.php');
	}

	if (!($FUD_OPT_1 & 1)) {
		exit("Forum is currently disabled.\n");
	}

	fud_use('err.inc');
	fud_use('db.inc');
	fud_use('imsg.inc');
	fud_use('imsg_edt.inc');
	fud_use('th.inc');
	fud_use('th_adm.inc');
	fud_use('wordwrap.inc');
	fud_use('isearch.inc');
	fud_use('replace.inc');
	fud_use('forum.inc');
	fud_use('rev_fmt.inc');
	fud_use('iemail.inc');
	fud_use('post_proc.inc');
	fud_use('is_perms.inc');
	fud_use('users.inc');
	fud_use('users_reg.inc');
	fud_use('attach.inc');
	fud_use('rhost.inc');
	fud_use('smiley.inc');
	fud_use('fileio.inc');
	fud_use('mlist.inc', true);
	fud_use('scripts_common.inc', true);

	define('sql_p', $DBHOST_TBL_PREFIX);

	if (is_numeric($_SERVER['argv'][1])) {
		$mlist = db_sab('SELECT * FROM '.sql_p.'mlist WHERE id='.$_SERVER['argv'][1]);
	} else {
		$mlist = db_sab("SELECT * FROM ".sql_p."mlist WHERE name='".addslashes($_SERVER['argv'][1])."'");
	}
	if (!$mlist) {
		exit('Invalid list identifier');
	}

	$CREATE_NEW_USERS = $mlist->mlist_opt & 64;
	$FUD_OPT_2 |= 1024|8388608;
	$FUD_OPT_2 ^= 1024|8388608;

	$frm = db_sab('SELECT id, forum_opt, message_threshold, (max_attach_size * 1024) AS max_attach_size, max_file_attachments FROM '.sql_p.'forum WHERE id='.$mlist->forum_id);

	$emsg = new fud_emsg();

	$emsg->subject_cleanup_rgx = $mlist->subject_regex_haystack;
	$emsg->subject_cleanup_rep = $mlist->subject_regex_needle;
	$emsg->body_cleanup_rgx = $mlist->body_regex_haystack;
	$emsg->body_cleanup_rep = $mlist->body_regex_needle;

	$emsg->parse_input($mlist->mlist_opt & 16);

	$emsg->fetch_useful_headers();
	$emsg->clean_up_data();

	$msg_post = new fud_msg_edit;

	// Handler for our own messages, which do not need to be imported.
	if (isset($emsg->headers['x-fudforum']) && preg_match('!([A-Za-z0-9]{32}) <([0-9]+)>!', $emsg->headers['x-fudforum'], $m)) {
		if ($m[1] == md5($GLOBALS['WWW_ROOT'])) {
			q("UPDATE ".sql_p."msg SET mlist_msg_id='".addslashes($emsg->msg_id)."' WHERE id=".intval($m[2])." AND mlist_msg_id IS NULL");
			if (db_affected()) {
				exit;
			}
		}
	}

	$msg_post->body = apply_custom_replace($emsg->body);
	if (!($mlist->mlist_opt & 16)) {
		if ($frm->forum_opt & 16) {
			$msg_post->body = tags_to_html($msg_post->body, 0);
		} else {
			$msg_post->body = nl2br($msg_post->body);
		}
	}

	fud_wordwrap($msg_post->body);
	$msg_post->subject = htmlspecialchars(apply_custom_replace($emsg->subject));
	if (!strlen($msg_post->subject)) {
		mlist_error_log("Blank Subject", $emsg->raw_msg);
	}

	if (!$emsg->from_email || !$emsg->from_name) {
		$msg_post->poster_id = 0;
	} else {
		$msg_post->poster_id = match_user_to_post($emsg->from_email, $emsg->from_name, $mlist->mlist_opt & 64, $emsg->user_id);
	}
	$msg_post->ip_addr = $emsg->ip;
	$msg_post->mlist_msg_id = addslashes($emsg->msg_id);
	$msg_post->attach_cnt = 0;
	$msg_post->poll_id = 0;
	$msg_post->msg_opt = 2;
	$msg_post->post_stamp = !empty($emsg->headers['date']) ? strtotime($emsg->headers['date']) : 0;
	if ($msg_post->post_stamp < 1 || $msg_post->post_stamp > __request_timestamp__) {
		mlist_error_log("Invalid Date", $emsg->raw_msg);
		if (($p = strpos($emsg->headers['received'], '; ')) !== false) {
			$p += 2;
			$msg_post->post_stamp = strtotime(substr($emsg->headers['received'], $p, (strpos($emsg->headers['received'], '00 ', $p) + 2 - $p)));
		}
		if ($msg_post->post_stamp < 1 || $msg_post->post_stamp > __request_timestamp__) {
			$msg_post->post_stamp = __request_timestamp__;
		}
	}

	// try to determine whether this message is a reply or a new thread
	list($msg_post->reply_to, $msg_post->thread_id) = get_fud_reply_id($mlist->mlist_opt & 32, $frm->id, $msg_post->subject, $emsg->reply_to_msg_id);

	$msg_post->add($frm->id, $frm->message_threshold, 0, 0, false);

	// Handle File Attachments
	if ($mlist->mlist_opt & 8 && isset($emsg->attachments) && is_array($emsg->attachments)) {
		foreach($emsg->attachments as $key => $val) {
			$tmpfname = tempnam($TMP, 'FUDf_');
			$fp = fopen($tmpfname, 'wb');
			fwrite($fp, $val);
			fclose($fp);

			$id = attach_add(array('name' => $key, 'size' => strlen($val), 'tmp_name' => $tmpfname), $msg_post->poster_id, 0, 1);
			$attach_list[$id] = $id;
		}

		if (isset($attach_list)) {
			attach_finalize($attach_list, $msg_post->id);
		}
	}

	if (!($mlist->mlist_opt & 1)) {
		$msg_post->approve($msg_post->id, true);
	}
?>
