3 * @copyright Copyright (C) 2010-2022, the Friendica project
5 * @license GNU AGPL version 3 or any later version
7 * This program is free software: you can redistribute it and/or modify
8 * it under the terms of the GNU Affero General Public License as
9 * published by the Free Software Foundation, either version 3 of the
10 * License, or (at your option) any later version.
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU Affero General Public License for more details.
17 * You should have received a copy of the GNU Affero General Public License
18 * along with this program. If not, see <https://www.gnu.org/licenses/>.
22 namespace Friendica\Protocol;
24 use Friendica\Core\Hook;
25 use Friendica\Core\Logger;
26 use Friendica\Content\Text\BBCode;
27 use Friendica\Content\Text\HTML;
28 use Friendica\Model\Item;
29 use Friendica\Util\Strings;
38 * @param string $mailbox The mailbox name
39 * @param string $username The username
40 * @param string $password The password
41 * @return Connection|resource|bool
44 public static function connect(string $mailbox, string $username, string $password)
46 if (!function_exists('imap_open')) {
50 $mbox = @imap_open($mailbox, $username, $password);
52 $errors = imap_errors();
53 if (!empty($errors)) {
54 Logger::notice('IMAP Errors occured', ['errors' => $errors]);
57 $alerts = imap_alerts();
58 if (!empty($alerts)) {
59 Logger::notice('IMAP Alerts occured: ', ['alerts' => $alerts]);
66 * @param Connection|resource $mbox mailbox
67 * @param string $email_addr email
71 public static function poll($mbox, string $email_addr): array
73 if (!$mbox || !$email_addr) {
77 $search1 = @imap_search($mbox, 'UNDELETED FROM "' . $email_addr . '"', SE_UID);
81 Logger::notice("Found mails from ".$email_addr);
84 $search2 = @imap_search($mbox, 'UNDELETED TO "' . $email_addr . '"', SE_UID);
88 Logger::notice("Found mails to ".$email_addr);
91 $search3 = @imap_search($mbox, 'UNDELETED CC "' . $email_addr . '"', SE_UID);
95 Logger::notice("Found mails cc ".$email_addr);
98 $res = array_unique(array_merge($search1, $search2, $search3));
104 * Returns mailbox name
106 * @param array $mailacct mail account
109 public static function constructMailboxName(array $mailacct): string
111 $ret = '{' . $mailacct['server'] . ((intval($mailacct['port'])) ? ':' . $mailacct['port'] : '');
112 $ret .= (($mailacct['ssltype']) ? '/' . $mailacct['ssltype'] . '/novalidate-cert' : '');
113 $ret .= '}' . $mailacct['mailbox'];
118 * @param Connection|resource $mbox mailbox
119 * @param integer $uid user id
122 public static function messageMeta($mbox, int $uid)
124 $ret = (($mbox && $uid) ? @imap_fetch_overview($mbox, $uid, FT_UID) : [[]]); // POSSIBLE CLEANUP --> array(array()) is probably redundant now
125 return (count($ret)) ? $ret : [];
129 * @param Connection|resource $mbox mailbox
130 * @param integer $uid user id
131 * @param string $reply reply
132 * @param array $item Item
134 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
136 public static function getMessage($mbox, int $uid, string $reply, array $item): array
140 $struc = (($mbox && $uid) ? @imap_fetchstructure($mbox, $uid, FT_UID) : null);
143 Logger::notice("IMAP structure couldn't be fetched", ['uid' => $uid]);
147 if (empty($struc->parts)) {
148 $html = trim(self::messageGetPart($mbox, $uid, $struc, 0, 'html'));
151 $message = ['text' => '', 'html' => $html, 'item' => $ret];
152 Hook::callAll('email_getmessage', $message);
153 $ret = $message['item'];
154 if (empty($ret['body'])) {
155 $ret['body'] = HTML::toBBCode($message['html']);
159 if (empty($ret['body'])) {
160 $text = self::messageGetPart($mbox, $uid, $struc, 0, 'plain');
162 $message = ['text' => $text, 'html' => '', 'item' => $ret];
163 Hook::callAll('email_getmessage', $message);
164 $ret = $message['item'];
165 $ret['body'] = $message['text'];
170 foreach ($struc->parts as $ptop => $p) {
171 $x = self::messageGetPart($mbox, $uid, $p, $ptop + 1, 'plain');
176 $x = self::messageGetPart($mbox, $uid, $p, $ptop + 1, 'html');
182 $message = ['text' => trim($text), 'html' => trim($html), 'item' => $ret];
183 Hook::callAll('email_getmessage', $message);
184 $ret = $message['item'];
186 if (empty($ret['body']) && !empty($message['html'])) {
187 $ret['body'] = HTML::toBBCode($message['html']);
190 if (empty($ret['body'])) {
191 $ret['body'] = $message['text'];
195 $ret['body'] = self::removeGPG($ret['body']);
196 $msg = self::removeSig($ret['body']);
197 $ret['body'] = $msg['body'];
198 $ret['body'] = self::convertQuote($ret['body'], $reply);
200 if (trim($html) != '') {
201 $ret['body'] = self::removeLinebreak($ret['body']);
204 $ret['body'] = self::unifyAttributionLine($ret['body']);
206 $ret['body'] = Strings::escapeHtml($ret['body']);
207 $ret['body'] = BBCode::limitBodySize($ret['body']);
209 Hook::callAll('email_getmessage_end', $ret);
215 * fetch the specified message part number with the specified subtype
217 * @param Connection|resource $mbox mailbox
218 * @param integer $uid user id
219 * @param object $p parts
220 * @param integer $partno part number
221 * @param string $subtype sub type
224 private static function messageGetPart($mbox, int $uid, $p, in $partno, string $subtype): string
226 // $partno = '1', '2', '2.1', '2.1.3', etc for multipart, 0 if simple
227 global $htmlmsg,$plainmsg,$charset,$attachments;
231 ? @imap_fetchbody($mbox, $uid, $partno, FT_UID|FT_PEEK)
232 : @imap_body($mbox, $uid, FT_UID|FT_PEEK);
234 // Any part may be encoded, even plain text messages, so check everything.
235 if ($p->encoding == 4) {
236 $data = quoted_printable_decode($data);
237 } elseif ($p->encoding == 3) {
238 $data = base64_decode($data);
242 // get all parameters, like charset, filenames of attachments, etc.
244 if ($p->parameters) {
245 foreach ($p->parameters as $x) {
246 $params[strtolower($x->attribute)] = $x->value;
250 if (isset($p->dparameters) && $p->dparameters) {
251 foreach ($p->dparameters as $x) {
252 $params[strtolower($x->attribute)] = $x->value;
257 // Any part with a filename is an attachment,
258 // so an attached text file (type 0) is not mistaken as the message.
260 if ((isset($params['filename']) && $params['filename']) || (isset($params['name']) && $params['name'])) {
261 // filename may be given as 'Filename' or 'Name' or both
262 $filename = ($params['filename'])? $params['filename'] : $params['name'];
263 // filename may be encoded, so see imap_mime_header_decode()
264 $attachments[$filename] = $data; // this is a problem if two files have same name
268 if ($p->type == 0 && $data) {
269 // Messages may be split in different parts because of inline attachments,
270 // so append parts together with blank row.
271 if (strtolower($p->subtype)==$subtype) {
272 $data = iconv($params['charset'], 'UTF-8//IGNORE', $data);
273 return (trim($data) ."\n\n");
278 // $htmlmsg .= $data ."<br><br>";
279 $charset = $params['charset']; // assume all parts are same charset
283 // Many bounce notifications embed the original message as type 2,
284 // but AOL uses type 1 (multipart), which is not handled here.
285 // There are no PHP functions to parse embedded messages,
286 // so this just appends the raw source to the main message.
287 // elseif ($p->type==2 && $data) {
288 // $plainmsg .= $data."\n\n";
292 if (isset($p->parts) && $p->parts) {
294 foreach ($p->parts as $partno0 => $p2) {
295 $x .= self::messageGetPart($mbox, $uid, $p2, $partno . '.' . ($partno0+1), $subtype); // 1.2, 1.2.1, etc.
302 * Returns encoded header
304 * @param string $in_str in string
305 * @param string $charset character set
308 public static function encodeHeader(string $in_str, string $charset): string
311 $need_to_convert = false;
313 for ($x = 0; $x < strlen($in_str); $x ++) {
314 if ((ord($in_str[$x]) == 0) || ((ord($in_str[$x]) > 128))) {
315 $need_to_convert = true;
319 if (!$need_to_convert) {
323 if ($out_str && $charset) {
324 // define start delimimter, end delimiter and spacer
326 $start = "=?" . $charset . "?B?";
327 $spacer = $end . "\r\n " . $start;
329 // determine length of encoded text within chunks
330 // and ensure length is even
331 $length = 75 - strlen($start) - strlen($end);
334 [EDIT BY danbrown AT php DOT net: The following
335 is a bugfix provided by (gardan AT gmx DOT de)
336 on 31-MAR-2005 with the following note:
337 "This means: $length should not be even,
338 but divisible by 4. The reason is that in
339 base64-encoding 3 8-bit-chars are represented
340 by 4 6-bit-chars. These 4 chars must not be
341 split between two encoded words, according
344 $length = $length - ($length % 4);
346 // encode the string and split it into chunks
347 // with spacers after each chunk
348 $out_str = base64_encode($out_str);
349 $out_str = chunk_split($out_str, $length, $spacer);
351 // remove trailing spacer and
352 // add start and end delimiters
353 $spacer = preg_quote($spacer, '/');
354 $out_str = preg_replace("/" . $spacer . "$/", "", $out_str);
355 $out_str = $start . $out_str . $end;
361 * Function send is used by Protocol::EMAIL code
362 * (not to notify the user, but to send items to email contacts)
364 * @param string $addr address
365 * @param string $subject subject
366 * @param string $headers headers
367 * @param array $item item
368 * @return bool Status from mail()
370 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
371 * @throws \ImagickException
372 * @todo This could be changed to use the Emailer class
374 public static function send(string $addr, string $subject, string $headers, array$item)
376 //$headers .= 'MIME-Version: 1.0' . "\n";
377 //$headers .= 'Content-Type: text/html; charset=UTF-8' . "\n";
378 //$headers .= 'Content-Type: text/plain; charset=UTF-8' . "\n";
379 //$headers .= 'Content-Transfer-Encoding: 8bit' . "\n\n";
381 $part = uniqid('', true);
383 $html = Item::prepareBody($item);
385 $headers .= "Mime-Version: 1.0\n";
386 $headers .= 'Content-Type: multipart/alternative; boundary="=_'.$part.'"'."\n\n";
388 $body = "\n--=_".$part."\n";
389 $body .= "Content-Transfer-Encoding: 8bit\n";
390 $body .= "Content-Type: text/plain; charset=utf-8; format=flowed\n\n";
392 $body .= HTML::toPlaintext($html)."\n";
394 $body .= "--=_".$part."\n";
395 $body .= "Content-Transfer-Encoding: 8bit\n";
396 $body .= "Content-Type: text/html; charset=utf-8\n\n";
398 $body .= '<html><head></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">'.$html."</body></html>\n";
400 $body .= "--=_".$part."--";
402 //$message = '<html><body>' . $html . '</body></html>';
403 //$message = html2plain($html);
404 Logger::notice('notifier: email delivery to ' . $addr);
405 return mail($addr, $subject, $body, $headers);
409 * Convert item URI to message id
411 * @param string $itemUri Item URI
412 * @return string Message id
414 public static function iri2msgid(string $itemUri): string
418 if (!strpos($itemUri, '@')) {
419 $msgid = preg_replace("/urn:(\S+):(\S+)\.(\S+):(\d+):(\S+)/i", "urn!$1!$4!$5@$2.$3", $itemUri);
426 * Converts message id to item URI
428 * @param string $msgid Message id
429 * @return string Item URI
431 public static function msgid2iri(string $msgid): string
435 if (strpos($msgid, '@')) {
436 $itemUri = preg_replace("/urn!(\S+)!(\d+)!(\S+)@(\S+)\.(\S+)/i", "urn:$1:$4.$5:$2:$3", $msgid);
443 * Invokes preg_replace() but does return full text from parameter if it
444 * returned an empty message.
446 * @param string $pattern Pattern to match
447 * @param string $replace String to replace with
448 * @param string $text String to check
449 * @return string Replaced string
451 private static function saveReplace(string $pattern, string $replace, string $text): string
453 $return = preg_replace($pattern, $replace, $text);
463 * Unifies attribution line(s)
465 * @param string $message Unfiltered message
466 * @return string Message with unified attribution line(s)
468 private static function unifyAttributionLine(string $message): string
470 $quotestr = ['quote', 'spoiler'];
471 foreach ($quotestr as $quote) {
472 $message = self::saveReplace('/----- Original Message -----\s.*?From: "([^<"].*?)" <(.*?)>\s.*?To: (.*?)\s*?Cc: (.*?)\s*?Sent: (.*?)\s.*?Subject: ([^\n].*)\s*\['.$quote.'\]/i', "[".$quote."='$1']\n", $message);
473 $message = self::saveReplace('/----- Original Message -----\s.*?From: "([^<"].*?)" <(.*?)>\s.*?To: (.*?)\s*?Sent: (.*?)\s.*?Subject: ([^\n].*)\s*\['.$quote.'\]/i', "[".$quote."='$1']\n", $message);
475 $message = self::saveReplace('/-------- Original-Nachricht --------\s*\['.$quote.'\]\nDatum: (.*?)\nVon: (.*?) <(.*?)>\nAn: (.*?)\nBetreff: (.*?)\n/i', "[".$quote."='$2']\n", $message);
476 $message = self::saveReplace('/-------- Original-Nachricht --------\s*\['.$quote.'\]\sDatum: (.*?)\s.*Von: "([^<"].*?)" <(.*?)>\s.*An: (.*?)\n.*/i', "[".$quote."='$2']\n", $message);
477 $message = self::saveReplace('/-------- Original-Nachricht --------\s*\['.$quote.'\]\nDatum: (.*?)\nVon: (.*?)\nAn: (.*?)\nBetreff: (.*?)\n/i', "[".$quote."='$2']\n", $message);
479 $message = self::saveReplace('/-----Urspr.*?ngliche Nachricht-----\sVon: "([^<"].*?)" <(.*?)>\s.*Gesendet: (.*?)\s.*An: (.*?)\s.*Betreff: ([^\n].*?).*:\s*\['.$quote.'\]/i', "[".$quote."='$1']\n", $message);
480 $message = self::saveReplace('/-----Urspr.*?ngliche Nachricht-----\sVon: "([^<"].*?)" <(.*?)>\s.*Gesendet: (.*?)\s.*An: (.*?)\s.*Betreff: ([^\n].*?)\s*\['.$quote.'\]/i', "[".$quote."='$1']\n", $message);
482 $message = self::saveReplace('/Am (.*?), schrieb (.*?):\s*\['.$quote.'\]/i', "[".$quote."='$2']\n", $message);
484 $message = self::saveReplace('/Am .*?, \d+ .*? \d+ \d+:\d+:\d+ \+\d+\sschrieb\s(.*?)\s<(.*?)>:\s*\['.$quote.'\]/i', "[".$quote."='$1']\n", $message);
486 $message = self::saveReplace('/Am (.*?) schrieb (.*?) <(.*?)>:\s*\['.$quote.'\]/i', "[".$quote."='$2']\n", $message);
487 $message = self::saveReplace('/Am (.*?) schrieb <(.*?)>:\s*\['.$quote.'\]/i', "[".$quote."='$2']\n", $message);
488 $message = self::saveReplace('/Am (.*?) schrieb (.*?):\s*\['.$quote.'\]/i', "[".$quote."='$2']\n", $message);
489 $message = self::saveReplace('/Am (.*?) schrieb (.*?)\n(.*?):\s*\['.$quote.'\]/i', "[".$quote."='$2']\n", $message);
491 $message = self::saveReplace('/(\d+)\/(\d+)\/(\d+) ([^<"].*?) <(.*?)>\s*\['.$quote.'\]/i', "[".$quote."='$4']\n", $message);
493 $message = self::saveReplace('/On .*?, \d+ .*? \d+ \d+:\d+:\d+ \+\d+\s(.*?)\s<(.*?)>\swrote:\s*\['.$quote.'\]/i', "[".$quote."='$1']\n", $message);
495 $message = self::saveReplace('/On (.*?) at (.*?), (.*?)\s<(.*?)>\swrote:\s*\['.$quote.'\]/i', "[".$quote."='$3']\n", $message);
496 $message = self::saveReplace('/On (.*?)\n([^<].*?)\s<(.*?)>\swrote:\s*\['.$quote.'\]/i', "[".$quote."='$2']\n", $message);
497 $message = self::saveReplace('/On (.*?), (.*?), (.*?)\s<(.*?)>\swrote:\s*\['.$quote.'\]/i', "[".$quote."='$3']\n", $message);
498 $message = self::saveReplace('/On ([^,].*?), (.*?)\swrote:\s*\['.$quote.'\]/i', "[".$quote."='$2']\n", $message);
499 $message = self::saveReplace('/On (.*?), (.*?)\swrote\s*\['.$quote.'\]/i', "[".$quote."='$2']\n", $message);
501 // Der loescht manchmal den Body - was eigentlich unmoeglich ist
502 $message = self::saveReplace('/On (.*?),(.*?),(.*?),(.*?), (.*?) wrote:\s*\['.$quote.'\]/i', "[".$quote."='$5']\n", $message);
504 $message = self::saveReplace('/Zitat von ([^<].*?) <(.*?)>:\s*\['.$quote.'\]/i', "[".$quote."='$1']\n", $message);
506 $message = self::saveReplace('/Quoting ([^<].*?) <(.*?)>:\s*\['.$quote.'\]/i', "[".$quote."='$1']\n", $message);
508 $message = self::saveReplace('/From: "([^<"].*?)" <(.*?)>\s*\['.$quote.'\]/i', "[".$quote."='$1']\n", $message);
509 $message = self::saveReplace('/From: <(.*?)>\s*\['.$quote.'\]/i', "[".$quote."='$1']\n", $message);
511 $message = self::saveReplace('/Du \(([^)].*?)\) schreibst:\s*\['.$quote.'\]/i', "[".$quote."='$1']\n", $message);
513 $message = self::saveReplace('/--- (.*?) <.*?> schrieb am (.*?):\s*\['.$quote.'\]/i', "[".$quote."='$1']\n", $message);
514 $message = self::saveReplace('/--- (.*?) schrieb am (.*?):\s*\['.$quote.'\]/i', "[".$quote."='$1']\n", $message);
516 $message = self::saveReplace('/\* (.*?) <(.*?)> hat geschrieben:\s*\['.$quote.'\]/i', "[".$quote."='$1']\n", $message);
518 $message = self::saveReplace('/(.*?) <(.*?)> schrieb (.*?)\):\s*\['.$quote.'\]/i', "[".$quote."='$1']\n", $message);
519 $message = self::saveReplace('/(.*?) <(.*?)> schrieb am (.*?) um (.*):\s*\['.$quote.'\]/i', "[".$quote."='$1']\n", $message);
520 $message = self::saveReplace('/(.*?) schrieb am (.*?) um (.*):\s*\['.$quote.'\]/i', "[".$quote."='$1']\n", $message);
521 $message = self::saveReplace('/(.*?) \((.*?)\) schrieb:\s*\['.$quote.'\]/i', "[".$quote."='$2']\n", $message);
522 $message = self::saveReplace('/(.*?) schrieb:\s*\['.$quote.'\]/i', "[".$quote."='$1']\n", $message);
524 $message = self::saveReplace('/(.*?) <(.*?)> writes:\s*\['.$quote.'\]/i', "[".$quote."='$1']\n", $message);
525 $message = self::saveReplace('/(.*?) \((.*?)\) writes:\s*\['.$quote.'\]/i', "[".$quote."='$2']\n", $message);
526 $message = self::saveReplace('/(.*?) writes:\s*\['.$quote.'\]/i', "[".$quote."='$1']\n", $message);
528 $message = self::saveReplace('/\* (.*?) wrote:\s*\['.$quote.'\]/i', "[".$quote."='$1']\n", $message);
529 $message = self::saveReplace('/(.*?) wrote \(.*?\):\s*\['.$quote.'\]/i', "[".$quote."='$1']\n", $message);
530 $message = self::saveReplace('/(.*?) wrote:\s*\['.$quote.'\]/i', "[".$quote."='$1']\n", $message);
532 $message = self::saveReplace('/([^<].*?) <.*?> hat am (.*?)\sum\s(.*)\sgeschrieben:\s*\['.$quote.'\]/i', "[".$quote."='$1']\n", $message);
534 $message = self::saveReplace('/(\d+)\/(\d+)\/(\d+) ([^<"].*?) <(.*?)>:\s*\['.$quote.'\]/i', "[".$quote."='$4']\n", $message);
535 $message = self::saveReplace('/(\d+)\/(\d+)\/(\d+) (.*?) <(.*?)>\s*\['.$quote.'\]/i', "[".$quote."='$4']\n", $message);
536 $message = self::saveReplace('/(\d+)\/(\d+)\/(\d+) <(.*?)>:\s*\['.$quote.'\]/i', "[".$quote."='$4']\n", $message);
537 $message = self::saveReplace('/(\d+)\/(\d+)\/(\d+) <(.*?)>\s*\['.$quote.'\]/i', "[".$quote."='$4']\n", $message);
539 $message = self::saveReplace('/(.*?) <(.*?)> schrubselte:\s*\['.$quote.'\]/i', "[".$quote."='$1']\n", $message);
540 $message = self::saveReplace('/(.*?) \((.*?)\) schrubselte:\s*\['.$quote.'\]/i', "[".$quote."='$2']\n", $message);
546 * Removes GPG part from message
548 * @param string $message Unfiltered message
549 * @return string Message with GPG part
551 private static function removeGPG(string $message): string
553 $pattern = '/(.*)\s*-----BEGIN PGP SIGNED MESSAGE-----\s*[\r\n].*Hash:.*?[\r\n](.*)'.
554 '[\r\n]\s*-----BEGIN PGP SIGNATURE-----\s*[\r\n].*'.
555 '[\r\n]\s*-----END PGP SIGNATURE-----(.*)/is';
557 if (preg_match($pattern, $message, $result)) {
558 $cleaned = trim($result[1].$result[2].$result[3]);
560 $cleaned = str_replace(["\n- --\n", "\n- -"], ["\n-- \n", "\n-"], $cleaned);
569 * Removes signature from message
571 * @param string $message Unfiltered message
572 * @return string Message with no signature
574 private static function removeSig(string $message): string
576 $sigpos = strrpos($message, "\n-- \n");
577 $quotepos = strrpos($message, "[/quote]");
580 // Especially for web.de who are using that as a separator
581 $message = str_replace("\n___________________________________________________________\n", "\n-- \n", $message);
582 $sigpos = strrpos($message, "\n-- \n");
583 $quotepos = strrpos($message, "[/quote]");
586 // When the signature separator is inside a quote, we don't separate
587 if (($sigpos < $quotepos) && ($sigpos != 0)) {
588 return ['body' => $message, 'sig' => ''];
591 $pattern = '/(.*)[\r\n]-- [\r\n](.*)/is';
593 preg_match($pattern, $message, $result);
595 if (!empty($result[1]) && !empty($result[2])) {
596 $cleaned = trim($result[1])."\n";
597 $sig = trim($result[2]);
603 return ['body' => $cleaned, 'sig' => $sig];
607 * Removes lines breaks from message
609 * @param string $message Unfiltered message
610 * @return string Message with no line breaks
612 private static function removeLinebreak(string $message): string
614 $arrbody = explode("\n", trim($message));
619 foreach ($arrbody as $i => $line) {
622 while ((strlen($currline)>0) && ((substr($currline, 0, 1) == '>')
623 || (substr($currline, 0, 1) == ' '))) {
624 if (substr($currline, 0, 1) == '>') {
628 $currline = ltrim(substr($currline, 1));
632 $nextline = trim($arrbody[$i + 1] ?? '');
633 while ((strlen($nextline)>0) && ((substr($nextline, 0, 1) == '>')
634 || (substr($nextline, 0, 1) == ' '))) {
635 if (substr($nextline, 0, 1) == '>') {
639 $nextline = ltrim(substr($nextline, 1));
642 if (!empty($lines[$lineno])) {
643 if (substr($lines[$lineno], -1) != ' ') {
644 $lines[$lineno] .= ' ';
647 while ((strlen($line)>0) && ((substr($line, 0, 1) == '>')
648 || (substr($line, 0, 1) == ' '))) {
650 $line = ltrim(substr($line, 1));
653 $lines[$lineno] = '';
656 $lines[$lineno] .= $line;
657 if (((substr($line, -1, 1) != ' '))
658 || ($quotelevel != $currquotelevel)) {
662 return implode("\n", $lines);
665 private static function convertQuote(strng $body, string $reply): string
668 $arrbody = explode("\n", trim($body));
671 for ($i = 0; $i < count($arrbody); $i++) {
673 $quoteline = $arrbody[$i];
675 while ((strlen($quoteline)>0) and ((substr($quoteline, 0, 1) == '>')
676 || (substr($quoteline, 0, 1) == ' '))) {
677 if (substr($quoteline, 0, 1) == '>')
680 $quoteline = ltrim(substr($quoteline, 1));
683 $arrlevel[$i] = $quotelevel;
684 $arrbody[$i] = $quoteline;
690 for ($i = 0; $i < count($arrbody); $i++) {
691 $previousquote = $quotelevel;
692 $quotelevel = $arrlevel[$i];
694 while ($previousquote < $quotelevel) {
696 $arrbody[$i] = $quote.$arrbody[$i];
700 while ($previousquote > $quotelevel) {
701 $arrbody[$i] = '[/quote]'.$arrbody[$i];
705 $arrbodyquoted[] = $arrbody[$i];
707 while ($quotelevel > 0) {
708 $arrbodyquoted[] = '[/quote]';
712 $body = implode("\n", $arrbodyquoted);
714 if (strlen($body) > 0) {
715 $body = $body."\n\n";
719 $body = self::removeToFu($body);
725 private static function removeToFu(string $message): string
727 $message = trim($message);
730 $oldmessage = $message;
731 $message = preg_replace('=\[/quote\][\s](.*?)\[quote\]=i', '$1', $message);
732 $message = str_replace('[/quote][quote]', '', $message);
733 } while ($message != $oldmessage);
741 while (($pos = strpos($message, '[quote', $start)) > 0) {
750 while (($pos = strpos($message, '[/quote]', $start)) > 0) {
755 while ($endquotes < $startquotes) {
756 $message .= '[/quote]';
762 while (($pos = strpos($message, '[/quote]', $start)) > 0) {
767 if (strtolower(substr($message, -8)) != '[/quote]') {
775 foreach ($quotes as $index => $quote) {
776 $quotelevel += $quote;
778 if (($quotelevel == 0) and ($quotestart == 0))
779 $quotestart = $index;
782 if ($quotestart != 0) {
783 $message = trim(substr($message, 0, $quotestart))."\n[spoiler]".substr($message, $quotestart+7, -8) . '[/spoiler]';