377 lines
10 KiB
PHP
377 lines
10 KiB
PHP
<?php
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/**
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* @file src/Protocol/Email.php
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*/
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namespace Friendica\Protocol;
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require_once 'include/html2plain.php';
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require_once 'include/msgclean.php';
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require_once 'include/quoteconvert.php';
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/**
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* @brief Email class
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*/
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class Email
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{
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/**
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* @param string $mailbox The mailbox name
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* @param string $username The username
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* @param string $password The password
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* @return object
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*/
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public static function connect($mailbox, $username, $password)
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{
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if (! function_exists('imap_open')) {
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return false;
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}
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$mbox = @imap_open($mailbox, $username, $password);
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return $mbox;
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}
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/**
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* @param object $mbox mailbox
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* @param string $email_addr email
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* @return array
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*/
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public static function poll($mbox, $email_addr)
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{
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if (! ($mbox && $email_addr))
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return array();
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$search1 = @imap_search($mbox, 'FROM "' . $email_addr . '"', SE_UID);
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if (!$search1) {
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$search1 = array();
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} else {
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logger("Found mails from ".$email_addr, LOGGER_DEBUG);
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}
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$search2 = @imap_search($mbox, 'TO "' . $email_addr . '"', SE_UID);
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if (!$search2) {
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$search2 = array();
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} else {
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logger("Found mails to ".$email_addr, LOGGER_DEBUG);
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}
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$search3 = @imap_search($mbox, 'CC "' . $email_addr . '"', SE_UID);
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if (!$search3) {
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$search3 = array();
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} else {
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logger("Found mails cc ".$email_addr, LOGGER_DEBUG);
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}
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$res = array_unique(array_merge($search1, $search2, $search3));
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return $res;
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}
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/**
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* @param array $mailacct mail account
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* @return object
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*/
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public static function constructMailboxName($mailacct)
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{
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$ret = '{' . $mailacct['server'] . ((intval($mailacct['port'])) ? ':' . $mailacct['port'] : '');
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$ret .= (($mailacct['ssltype']) ? '/' . $mailacct['ssltype'] . '/novalidate-cert' : '');
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$ret .= '}' . $mailacct['mailbox'];
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return $ret;
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}
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/**
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* @param object $mbox mailbox
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* @param integer $uid user id
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* @return mixed
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*/
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public static function messageMeta($mbox, $uid)
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{
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$ret = (($mbox && $uid) ? @imap_fetch_overview($mbox, $uid, FT_UID) : array(array())); // POSSIBLE CLEANUP --> array(array()) is probably redundant now
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return (count($ret)) ? $ret : array();
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}
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/**
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* @param object $mbox mailbox
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* @param integer $uid user id
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* @param string $reply reply
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* @return array
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*/
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public static function getMessage($mbox, $uid, $reply)
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{
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$ret = array();
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$struc = (($mbox && $uid) ? @imap_fetchstructure($mbox, $uid, FT_UID) : null);
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if (! $struc) {
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return $ret;
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}
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if (! $struc->parts) {
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$ret['body'] = self::messageGetPart($mbox, $uid, $struc, 0, 'html');
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$html = $ret['body'];
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if (trim($ret['body']) == '') {
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$ret['body'] = self::messageGetPart($mbox, $uid, $struc, 0, 'plain');
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} else {
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$ret['body'] = html2bbcode($ret['body']);
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}
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} else {
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$text = '';
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$html = '';
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foreach ($struc->parts as $ptop => $p) {
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$x = self::messageGetPart($mbox, $uid, $p, $ptop + 1, 'plain');
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if ($x) {
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$text .= $x;
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}
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$x = self::messageGetPart($mbox, $uid, $p, $ptop + 1, 'html');
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if ($x) {
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$html .= $x;
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}
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}
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if (trim($html) != '') {
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$ret['body'] = html2bbcode($html);
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} else {
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$ret['body'] = $text;
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}
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}
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$ret['body'] = removegpg($ret['body']);
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$msg = removesig($ret['body']);
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$ret['body'] = $msg['body'];
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$ret['body'] = convertquote($ret['body'], $reply);
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if (trim($html) != '') {
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$ret['body'] = removelinebreak($ret['body']);
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}
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$ret['body'] = unifyattributionline($ret['body']);
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return $ret;
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}
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// At the moment - only return plain/text.
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// Later we'll repackage inline images as data url's and make the HTML safe
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/**
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* @param object $mbox mailbox
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* @param integer $uid user id
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* @param object $p parts
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* @param integer $partno part number
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* @param string $subtype sub type
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* @return string
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*/
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private static function messageGetPart($mbox, $uid, $p, $partno, $subtype)
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{
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// $partno = '1', '2', '2.1', '2.1.3', etc for multipart, 0 if simple
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global $htmlmsg,$plainmsg,$charset,$attachments;
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//echo $partno."\n";
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// DECODE DATA
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$data = ($partno)
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? @imap_fetchbody($mbox, $uid, $partno, FT_UID|FT_PEEK)
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: @imap_body($mbox, $uid, FT_UID|FT_PEEK);
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// Any part may be encoded, even plain text messages, so check everything.
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if ($p->encoding==4) {
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$data = quoted_printable_decode($data);
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} elseif ($p->encoding==3) {
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$data = base64_decode($data);
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}
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// PARAMETERS
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// get all parameters, like charset, filenames of attachments, etc.
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$params = array();
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if ($p->parameters) {
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foreach ($p->parameters as $x) {
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$params[strtolower($x->attribute)] = $x->value;
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}
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}
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if (isset($p->dparameters) && $p->dparameters) {
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foreach ($p->dparameters as $x) {
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$params[strtolower($x->attribute)] = $x->value;
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}
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}
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// ATTACHMENT
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// Any part with a filename is an attachment,
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// so an attached text file (type 0) is not mistaken as the message.
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if ((isset($params['filename']) && $params['filename']) || (isset($params['name']) && $params['name'])) {
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// filename may be given as 'Filename' or 'Name' or both
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$filename = ($params['filename'])? $params['filename'] : $params['name'];
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// filename may be encoded, so see imap_mime_header_decode()
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$attachments[$filename] = $data; // this is a problem if two files have same name
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}
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// TEXT
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if ($p->type == 0 && $data) {
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// Messages may be split in different parts because of inline attachments,
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// so append parts together with blank row.
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if (strtolower($p->subtype)==$subtype) {
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$data = iconv($params['charset'], 'UTF-8//IGNORE', $data);
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return (trim($data) ."\n\n");
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} else {
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$data = '';
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}
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// $htmlmsg .= $data ."<br><br>";
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$charset = $params['charset']; // assume all parts are same charset
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}
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// EMBEDDED MESSAGE
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// Many bounce notifications embed the original message as type 2,
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// but AOL uses type 1 (multipart), which is not handled here.
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// There are no PHP functions to parse embedded messages,
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// so this just appends the raw source to the main message.
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// elseif ($p->type==2 && $data) {
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// $plainmsg .= $data."\n\n";
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// }
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// SUBPART RECURSION
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if (isset($p->parts) && $p->parts) {
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$x = "";
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foreach ($p->parts as $partno0 => $p2) {
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$x .= self::messageGetPart($mbox, $uid, $p2, $partno . '.' . ($partno0+1), $subtype); // 1.2, 1.2.1, etc.
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//if ($x) {
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// return $x;
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//}
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}
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return $x;
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}
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}
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/**
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* @param string $in_str in string
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* @param string $charset character set
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* @return string
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*/
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public static function encodeHeader($in_str, $charset)
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{
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$out_str = $in_str;
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$need_to_convert = false;
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for ($x = 0; $x < strlen($in_str); $x ++) {
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if ((ord($in_str[$x]) == 0) || ((ord($in_str[$x]) > 128))) {
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$need_to_convert = true;
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}
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}
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if (! $need_to_convert) {
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return $in_str;
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}
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if ($out_str && $charset) {
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// define start delimimter, end delimiter and spacer
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$end = "?=";
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$start = "=?" . $charset . "?B?";
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$spacer = $end . "\r\n " . $start;
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// determine length of encoded text within chunks
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// and ensure length is even
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$length = 75 - strlen($start) - strlen($end);
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/*
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[EDIT BY danbrown AT php DOT net: The following
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is a bugfix provided by (gardan AT gmx DOT de)
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on 31-MAR-2005 with the following note:
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"This means: $length should not be even,
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but divisible by 4. The reason is that in
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base64-encoding 3 8-bit-chars are represented
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by 4 6-bit-chars. These 4 chars must not be
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split between two encoded words, according
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to RFC-2047.
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*/
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$length = $length - ($length % 4);
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// encode the string and split it into chunks
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// with spacers after each chunk
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$out_str = base64_encode($out_str);
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$out_str = chunk_split($out_str, $length, $spacer);
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// remove trailing spacer and
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// add start and end delimiters
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$spacer = preg_quote($spacer, '/');
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$out_str = preg_replace("/" . $spacer . "$/", "", $out_str);
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$out_str = $start . $out_str . $end;
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}
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return $out_str;
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}
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/**
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* Function send is used by NETWORK_EMAIL and NETWORK_EMAIL2 code
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* (not to notify the user, but to send items to email contacts)
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*
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* @param string $addr address
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* @param string $subject subject
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* @param string $headers headers
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* @param array $item item
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*
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* @return void
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*
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* @todo This could be changed to use the Emailer class
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*/
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public static function send($addr, $subject, $headers, $item)
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{
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//$headers .= 'MIME-Version: 1.0' . "\n";
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//$headers .= 'Content-Type: text/html; charset=UTF-8' . "\n";
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//$headers .= 'Content-Type: text/plain; charset=UTF-8' . "\n";
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//$headers .= 'Content-Transfer-Encoding: 8bit' . "\n\n";
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$part = uniqid("", true);
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$html = prepare_body($item);
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$headers .= "Mime-Version: 1.0\n";
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$headers .= 'Content-Type: multipart/alternative; boundary="=_'.$part.'"'."\n\n";
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$body = "\n--=_".$part."\n";
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$body .= "Content-Transfer-Encoding: 8bit\n";
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$body .= "Content-Type: text/plain; charset=utf-8; format=flowed\n\n";
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$body .= html2plain($html)."\n";
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$body .= "--=_".$part."\n";
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$body .= "Content-Transfer-Encoding: 8bit\n";
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$body .= "Content-Type: text/html; charset=utf-8\n\n";
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$body .= '<html><head></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">'.$html."</body></html>\n";
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$body .= "--=_".$part."--";
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//$message = '<html><body>' . $html . '</body></html>';
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//$message = html2plain($html);
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logger('notifier: email delivery to ' . $addr);
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mail($addr, $subject, $body, $headers);
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}
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/**
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* @param string $iri string
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* @return string
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*/
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public static function iri2msgid($iri)
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{
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if (!strpos($iri, "@")) {
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$msgid = preg_replace("/urn:(\S+):(\S+)\.(\S+):(\d+):(\S+)/i", "urn!$1!$4!$5@$2.$3", $iri);
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} else {
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$msgid = $iri;
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}
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return($msgid);
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}
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/**
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* @param string $msgid msgid
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* @return string
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*/
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public static function msgid2iri($msgid)
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{
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if (strpos($msgid, "@")) {
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$iri = preg_replace("/urn!(\S+)!(\d+)!(\S+)@(\S+)\.(\S+)/i", "urn:$1:$4.$5:$2:$3", $msgid);
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} else {
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$iri = $msgid;
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}
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return($iri);
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}
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}
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