Friendica Communications Platform (please note that this is a clone of the repository at github, issues are handled there) https://friendi.ca
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<?php
/**
* @file src/Protocol/Email.php
*/
namespace Friendica\Protocol;
use Friendica\Core\Hook;
use Friendica\Core\Logger;
use Friendica\Content\Text\BBCode;
use Friendica\Content\Text\HTML;
use Friendica\Model\Item;
use Friendica\Util\Strings;
/**
* @brief Email class
*/
class Email
{
/**
* @param string $mailbox The mailbox name
* @param string $username The username
* @param string $password The password
* @return resource
* @throws \Exception
*/
public static function connect($mailbox, $username, $password)
{
if (!function_exists('imap_open')) {
return false;
}
$mbox = @imap_open($mailbox, $username, $password);
$errors = imap_errors();
if (!empty($errors)) {
Logger::log('IMAP Errors occured: ' . json_encode($errors));
}
$alerts = imap_alerts();
if (!empty($alerts)) {
Logger::log('IMAP Alerts occured: ' . json_encode($alerts));
}
return $mbox;
}
/**
* @param resource $mbox mailbox
* @param string $email_addr email
* @return array
* @throws \Exception
*/
public static function poll($mbox, $email_addr)
{
if (!$mbox || !$email_addr) {
return [];
}
$search1 = @imap_search($mbox, 'UNDELETED FROM "' . $email_addr . '"', SE_UID);
if (!$search1) {
$search1 = [];
} else {
Logger::log("Found mails from ".$email_addr, Logger::DEBUG);
}
$search2 = @imap_search($mbox, 'UNDELETED TO "' . $email_addr . '"', SE_UID);
if (!$search2) {
$search2 = [];
} else {
Logger::log("Found mails to ".$email_addr, Logger::DEBUG);
}
$search3 = @imap_search($mbox, 'UNDELETED CC "' . $email_addr . '"', SE_UID);
if (!$search3) {
$search3 = [];
} else {
Logger::log("Found mails cc ".$email_addr, Logger::DEBUG);
}
$res = array_unique(array_merge($search1, $search2, $search3));
return $res;
}
/**
* @param array $mailacct mail account
* @return string
*/
public static function constructMailboxName($mailacct)
{
$ret = '{' . $mailacct['server'] . ((intval($mailacct['port'])) ? ':' . $mailacct['port'] : '');
$ret .= (($mailacct['ssltype']) ? '/' . $mailacct['ssltype'] . '/novalidate-cert' : '');
$ret .= '}' . $mailacct['mailbox'];
return $ret;
}
/**
* @param resource $mbox mailbox
* @param integer $uid user id
* @return mixed
*/
public static function messageMeta($mbox, $uid)
{
$ret = (($mbox && $uid) ? @imap_fetch_overview($mbox, $uid, FT_UID) : [[]]); // POSSIBLE CLEANUP --> array(array()) is probably redundant now
return (count($ret)) ? $ret : [];
}
/**
* @param resource $mbox mailbox
* @param integer $uid user id
* @param string $reply reply
* @return array
* @throws \Friendica\Network\HTTPException\InternalServerErrorException
*/
public static function getMessage($mbox, $uid, $reply, $item)
{
$ret = $item;
$struc = (($mbox && $uid) ? @imap_fetchstructure($mbox, $uid, FT_UID) : null);
if (!$struc) {
Logger::notice("IMAP structure couldn't be fetched", ['uid' => $uid]);
return $ret;
}
if (empty($struc->parts)) {
$html = trim(self::messageGetPart($mbox, $uid, $struc, 0, 'html'));
if (!empty($html)) {
$message = ['text' => '', 'html' => $html, 'item' => $ret];
Hook::callAll('email_getmessage', $message);
$ret = $message['item'];
if (empty($ret['body'])) {
$ret['body'] = HTML::toBBCode($message['html']);
}
}
if (empty($ret['body'])) {
$text = self::messageGetPart($mbox, $uid, $struc, 0, 'plain');
$message = ['text' => $text, 'html' => '', 'item' => $ret];
Hook::callAll('email_getmessage', $message);
$ret = $message['item'];
$ret['body'] = $message['text'];
}
} else {
$text = '';
$html = '';
foreach ($struc->parts as $ptop => $p) {
$x = self::messageGetPart($mbox, $uid, $p, $ptop + 1, 'plain');
if ($x) {
$text .= $x;
}
$x = self::messageGetPart($mbox, $uid, $p, $ptop + 1, 'html');
if ($x) {
$html .= $x;
}
}
$message = ['text' => trim($text), 'html' => trim($html), 'item' => $ret];
Hook::callAll('email_getmessage', $message);
$ret = $message['item'];
if (empty($ret['body']) && !empty($message['html'])) {
$ret['body'] = HTML::toBBCode($message['html']);
}
if (empty($ret['body'])) {
$ret['body'] = $message['text'];
}
}
$ret['body'] = self::removeGPG($ret['body']);
$msg = self::removeSig($ret['body']);
$ret['body'] = $msg['body'];
$ret['body'] = self::convertQuote($ret['body'], $reply);
if (trim($html) != '') {
$ret['body'] = self::removeLinebreak($ret['body']);
}
$ret['body'] = self::unifyAttributionLine($ret['body']);
$ret['body'] = Strings::escapeHtml($ret['body']);
$ret['body'] = BBCode::limitBodySize($ret['body']);
Hook::callAll('email_getmessage_end', $ret);
return $ret;
}
/**
* fetch the specified message part number with the specified subtype
*
* @param resource $mbox mailbox
* @param integer $uid user id
* @param object $p parts
* @param integer $partno part number
* @param string $subtype sub type
* @return string
*/
private static function messageGetPart($mbox, $uid, $p, $partno, $subtype)
{
// $partno = '1', '2', '2.1', '2.1.3', etc for multipart, 0 if simple
global $htmlmsg,$plainmsg,$charset,$attachments;
// DECODE DATA
$data = ($partno)
? @imap_fetchbody($mbox, $uid, $partno, FT_UID|FT_PEEK)
: @imap_body($mbox, $uid, FT_UID|FT_PEEK);
// Any part may be encoded, even plain text messages, so check everything.
if ($p->encoding == 4) {
$data = quoted_printable_decode($data);
} elseif ($p->encoding == 3) {
$data = base64_decode($data);
}
// PARAMETERS
// get all parameters, like charset, filenames of attachments, etc.
$params = [];
if ($p->parameters) {
foreach ($p->parameters as $x) {
$params[strtolower($x->attribute)] = $x->value;
}
}
if (isset($p->dparameters) && $p->dparameters) {
foreach ($p->dparameters as $x) {
$params[strtolower($x->attribute)] = $x->value;
}
}
// ATTACHMENT
// Any part with a filename is an attachment,
// so an attached text file (type 0) is not mistaken as the message.
if ((isset($params['filename']) && $params['filename']) || (isset($params['name']) && $params['name'])) {
// filename may be given as 'Filename' or 'Name' or both
$filename = ($params['filename'])? $params['filename'] : $params['name'];
// filename may be encoded, so see imap_mime_header_decode()
$attachments[$filename] = $data; // this is a problem if two files have same name
}
// TEXT
if ($p->type == 0 && $data) {
// Messages may be split in different parts because of inline attachments,
// so append parts together with blank row.
if (strtolower($p->subtype)==$subtype) {
$data = iconv($params['charset'], 'UTF-8//IGNORE', $data);
return (trim($data) ."\n\n");
} else {
$data = '';
}
// $htmlmsg .= $data ."<br><br>";
$charset = $params['charset']; // assume all parts are same charset
}
// EMBEDDED MESSAGE
// Many bounce notifications embed the original message as type 2,
// but AOL uses type 1 (multipart), which is not handled here.
// There are no PHP functions to parse embedded messages,
// so this just appends the raw source to the main message.
// elseif ($p->type==2 && $data) {
// $plainmsg .= $data."\n\n";
// }
// SUBPART RECURSION
if (isset($p->parts) && $p->parts) {
$x = "";
foreach ($p->parts as $partno0 => $p2) {
$x .= self::messageGetPart($mbox, $uid, $p2, $partno . '.' . ($partno0+1), $subtype); // 1.2, 1.2.1, etc.
}
return $x;
}
}
/**
* @param string $in_str in string
* @param string $charset character set
* @return string
*/
public static function encodeHeader($in_str, $charset)
{
$out_str = $in_str;
$need_to_convert = false;
for ($x = 0; $x < strlen($in_str); $x ++) {
if ((ord($in_str[$x]) == 0) || ((ord($in_str[$x]) > 128))) {
$need_to_convert = true;
}
}
if (!$need_to_convert) {
return $in_str;
}
if ($out_str && $charset) {
// define start delimimter, end delimiter and spacer
$end = "?=";
$start = "=?" . $charset . "?B?";
$spacer = $end . "\r\n " . $start;
// determine length of encoded text within chunks
// and ensure length is even
$length = 75 - strlen($start) - strlen($end);
/*
[EDIT BY danbrown AT php DOT net: The following
is a bugfix provided by (gardan AT gmx DOT de)
on 31-MAR-2005 with the following note:
"This means: $length should not be even,
but divisible by 4. The reason is that in
base64-encoding 3 8-bit-chars are represented
by 4 6-bit-chars. These 4 chars must not be
split between two encoded words, according
to RFC-2047.
*/
$length = $length - ($length % 4);
// encode the string and split it into chunks
// with spacers after each chunk
$out_str = base64_encode($out_str);
$out_str = chunk_split($out_str, $length, $spacer);
// remove trailing spacer and
// add start and end delimiters
$spacer = preg_quote($spacer, '/');
$out_str = preg_replace("/" . $spacer . "$/", "", $out_str);
$out_str = $start . $out_str . $end;
}
return $out_str;
}
/**
* Function send is used by Protocol::EMAIL code
* (not to notify the user, but to send items to email contacts)
*
* @param string $addr address
* @param string $subject subject
* @param string $headers headers
* @param array $item item
*
* @return void
*
* @throws \Friendica\Network\HTTPException\InternalServerErrorException
* @throws \ImagickException
* @todo This could be changed to use the Emailer class
*/
public static function send($addr, $subject, $headers, $item)
{
//$headers .= 'MIME-Version: 1.0' . "\n";
//$headers .= 'Content-Type: text/html; charset=UTF-8' . "\n";
//$headers .= 'Content-Type: text/plain; charset=UTF-8' . "\n";
//$headers .= 'Content-Transfer-Encoding: 8bit' . "\n\n";
$part = uniqid("", true);
$html = Item::prepareBody($item);
$headers .= "Mime-Version: 1.0\n";
$headers .= 'Content-Type: multipart/alternative; boundary="=_'.$part.'"'."\n\n";
$body = "\n--=_".$part."\n";
$body .= "Content-Transfer-Encoding: 8bit\n";
$body .= "Content-Type: text/plain; charset=utf-8; format=flowed\n\n";
$body .= HTML::toPlaintext($html)."\n";
$body .= "--=_".$part."\n";
$body .= "Content-Transfer-Encoding: 8bit\n";
$body .= "Content-Type: text/html; charset=utf-8\n\n";
$body .= '<html><head></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">'.$html."</body></html>\n";
$body .= "--=_".$part."--";
//$message = '<html><body>' . $html . '</body></html>';
//$message = html2plain($html);
Logger::log('notifier: email delivery to ' . $addr);
mail($addr, $subject, $body, $headers);
}
/**
* @param string $iri string
* @return string
*/
public static function iri2msgid($iri)
{
if (!strpos($iri, "@")) {
$msgid = preg_replace("/urn:(\S+):(\S+)\.(\S+):(\d+):(\S+)/i", "urn!$1!$4!$5@$2.$3", $iri);
} else {
$msgid = $iri;
}
return $msgid;
}
/**
* @param string $msgid msgid
* @return string
*/
public static function msgid2iri($msgid)
{
if (strpos($msgid, "@")) {
$iri = preg_replace("/urn!(\S+)!(\d+)!(\S+)@(\S+)\.(\S+)/i", "urn:$1:$4.$5:$2:$3", $msgid);
} else {
$iri = $msgid;
}
return $iri;
}
private static function saveReplace($pattern, $replace, $text)
{
$save = $text;
$text = preg_replace($pattern, $replace, $text);
if ($text == '') {
$text = $save;
}
return $text;
}
private static function unifyAttributionLine($message)
{
$quotestr = ['quote', 'spoiler'];
foreach ($quotestr as $quote) {
$message = self::saveReplace('/----- Original Message -----\s.*?From: "([^<"].*?)" <(.*?)>\s.*?To: (.*?)\s*?Cc: (.*?)\s*?Sent: (.*?)\s.*?Subject: ([^\n].*)\s*\['.$quote.'\]/i', "[".$quote."='$1']\n", $message);
$message = self::saveReplace('/----- Original Message -----\s.*?From: "([^<"].*?)" <(.*?)>\s.*?To: (.*?)\s*?Sent: (.*?)\s.*?Subject: ([^\n].*)\s*\['.$quote.'\]/i', "[".$quote."='$1']\n", $message);
$message = self::saveReplace('/-------- Original-Nachricht --------\s*\['.$quote.'\]\nDatum: (.*?)\nVon: (.*?) <(.*?)>\nAn: (.*?)\nBetreff: (.*?)\n/i', "[".$quote."='$2']\n", $message);
$message = self::saveReplace('/-------- Original-Nachricht --------\s*\['.$quote.'\]\sDatum: (.*?)\s.*Von: "([^<"].*?)" <(.*?)>\s.*An: (.*?)\n.*/i', "[".$quote."='$2']\n", $message);
$message = self::saveReplace('/-------- Original-Nachricht --------\s*\['.$quote.'\]\nDatum: (.*?)\nVon: (.*?)\nAn: (.*?)\nBetreff: (.*?)\n/i', "[".$quote."='$2']\n", $message);
$message = self::saveReplace('/-----Urspr.*?ngliche Nachricht-----\sVon: "([^<"].*?)" <(.*?)>\s.*Gesendet: (.*?)\s.*An: (.*?)\s.*Betreff: ([^\n].*?).*:\s*\['.$quote.'\]/i', "[".$quote."='$1']\n", $message);
$message = self::saveReplace('/-----Urspr.*?ngliche Nachricht-----\sVon: "([^<"].*?)" <(.*?)>\s.*Gesendet: (.*?)\s.*An: (.*?)\s.*Betreff: ([^\n].*?)\s*\['.$quote.'\]/i', "[".$quote."='$1']\n", $message);
$message = self::saveReplace('/Am (.*?), schrieb (.*?):\s*\['.$quote.'\]/i', "[".$quote."='$2']\n", $message);
$message = self::saveReplace('/Am .*?, \d+ .*? \d+ \d+:\d+:\d+ \+\d+\sschrieb\s(.*?)\s<(.*?)>:\s*\['.$quote.'\]/i', "[".$quote."='$1']\n", $message);
$message = self::saveReplace('/Am (.*?) schrieb (.*?) <(.*?)>:\s*\['.$quote.'\]/i', "[".$quote."='$2']\n", $message);
$message = self::saveReplace('/Am (.*?) schrieb <(.*?)>:\s*\['.$quote.'\]/i', "[".$quote."='$2']\n", $message);
$message = self::saveReplace('/Am (.*?) schrieb (.*?):\s*\['.$quote.'\]/i', "[".$quote."='$2']\n", $message);
$message = self::saveReplace('/Am (.*?) schrieb (.*?)\n(.*?):\s*\['.$quote.'\]/i', "[".$quote."='$2']\n", $message);
$message = self::saveReplace('/(\d+)\/(\d+)\/(\d+) ([^<"].*?) <(.*?)>\s*\['.$quote.'\]/i', "[".$quote."='$4']\n", $message);
$message = self::saveReplace('/On .*?, \d+ .*? \d+ \d+:\d+:\d+ \+\d+\s(.*?)\s<(.*?)>\swrote:\s*\['.$quote.'\]/i', "[".$quote."='$1']\n", $message);
$message = self::saveReplace('/On (.*?) at (.*?), (.*?)\s<(.*?)>\swrote:\s*\['.$quote.'\]/i', "[".$quote."='$3']\n", $message);
$message = self::saveReplace('/On (.*?)\n([^<].*?)\s<(.*?)>\swrote:\s*\['.$quote.'\]/i', "[".$quote."='$2']\n", $message);
$message = self::saveReplace('/On (.*?), (.*?), (.*?)\s<(.*?)>\swrote:\s*\['.$quote.'\]/i', "[".$quote."='$3']\n", $message);
$message = self::saveReplace('/On ([^,].*?), (.*?)\swrote:\s*\['.$quote.'\]/i', "[".$quote."='$2']\n", $message);
$message = self::saveReplace('/On (.*?), (.*?)\swrote\s*\['.$quote.'\]/i', "[".$quote."='$2']\n", $message);
// Der loescht manchmal den Body - was eigentlich unmoeglich ist
$message = self::saveReplace('/On (.*?),(.*?),(.*?),(.*?), (.*?) wrote:\s*\['.$quote.'\]/i', "[".$quote."='$5']\n", $message);
$message = self::saveReplace('/Zitat von ([^<].*?) <(.*?)>:\s*\['.$quote.'\]/i', "[".$quote."='$1']\n", $message);
$message = self::saveReplace('/Quoting ([^<].*?) <(.*?)>:\s*\['.$quote.'\]/i', "[".$quote."='$1']\n", $message);
$message = self::saveReplace('/From: "([^<"].*?)" <(.*?)>\s*\['.$quote.'\]/i', "[".$quote."='$1']\n", $message);
$message = self::saveReplace('/From: <(.*?)>\s*\['.$quote.'\]/i', "[".$quote."='$1']\n", $message);
$message = self::saveReplace('/Du \(([^)].*?)\) schreibst:\s*\['.$quote.'\]/i', "[".$quote."='$1']\n", $message);
$message = self::saveReplace('/--- (.*?) <.*?> schrieb am (.*?):\s*\['.$quote.'\]/i', "[".$quote."='$1']\n", $message);
$message = self::saveReplace('/--- (.*?) schrieb am (.*?):\s*\['.$quote.'\]/i', "[".$quote."='$1']\n", $message);
$message = self::saveReplace('/\* (.*?) <(.*?)> hat geschrieben:\s*\['.$quote.'\]/i', "[".$quote."='$1']\n", $message);
$message = self::saveReplace('/(.*?) <(.*?)> schrieb (.*?)\):\s*\['.$quote.'\]/i', "[".$quote."='$1']\n", $message);
$message = self::saveReplace('/(.*?) <(.*?)> schrieb am (.*?) um (.*):\s*\['.$quote.'\]/i', "[".$quote."='$1']\n", $message);
$message = self::saveReplace('/(.*?) schrieb am (.*?) um (.*):\s*\['.$quote.'\]/i', "[".$quote."='$1']\n", $message);
$message = self::saveReplace('/(.*?) \((.*?)\) schrieb:\s*\['.$quote.'\]/i', "[".$quote."='$2']\n", $message);
$message = self::saveReplace('/(.*?) schrieb:\s*\['.$quote.'\]/i', "[".$quote."='$1']\n", $message);
$message = self::saveReplace('/(.*?) <(.*?)> writes:\s*\['.$quote.'\]/i', "[".$quote."='$1']\n", $message);
$message = self::saveReplace('/(.*?) \((.*?)\) writes:\s*\['.$quote.'\]/i', "[".$quote."='$2']\n", $message);
$message = self::saveReplace('/(.*?) writes:\s*\['.$quote.'\]/i', "[".$quote."='$1']\n", $message);
$message = self::saveReplace('/\* (.*?) wrote:\s*\['.$quote.'\]/i', "[".$quote."='$1']\n", $message);
$message = self::saveReplace('/(.*?) wrote \(.*?\):\s*\['.$quote.'\]/i', "[".$quote."='$1']\n", $message);
$message = self::saveReplace('/(.*?) wrote:\s*\['.$quote.'\]/i', "[".$quote."='$1']\n", $message);
$message = self::saveReplace('/([^<].*?) <.*?> hat am (.*?)\sum\s(.*)\sgeschrieben:\s*\['.$quote.'\]/i', "[".$quote."='$1']\n", $message);
$message = self::saveReplace('/(\d+)\/(\d+)\/(\d+) ([^<"].*?) <(.*?)>:\s*\['.$quote.'\]/i', "[".$quote."='$4']\n", $message);
$message = self::saveReplace('/(\d+)\/(\d+)\/(\d+) (.*?) <(.*?)>\s*\['.$quote.'\]/i', "[".$quote."='$4']\n", $message);
$message = self::saveReplace('/(\d+)\/(\d+)\/(\d+) <(.*?)>:\s*\['.$quote.'\]/i', "[".$quote."='$4']\n", $message);
$message = self::saveReplace('/(\d+)\/(\d+)\/(\d+) <(.*?)>\s*\['.$quote.'\]/i', "[".$quote."='$4']\n", $message);
$message = self::saveReplace('/(.*?) <(.*?)> schrubselte:\s*\['.$quote.'\]/i', "[".$quote."='$1']\n", $message);
$message = self::saveReplace('/(.*?) \((.*?)\) schrubselte:\s*\['.$quote.'\]/i', "[".$quote."='$2']\n", $message);
}
return $message;
}
private static function removeGPG($message)
{
$pattern = '/(.*)\s*-----BEGIN PGP SIGNED MESSAGE-----\s*[\r\n].*Hash:.*?[\r\n](.*)'.
'[\r\n]\s*-----BEGIN PGP SIGNATURE-----\s*[\r\n].*'.
'[\r\n]\s*-----END PGP SIGNATURE-----(.*)/is';
if (preg_match($pattern, $message, $result)) {
$cleaned = trim($result[1].$result[2].$result[3]);
$cleaned = str_replace(["\n- --\n", "\n- -"], ["\n-- \n", "\n-"], $cleaned);
} else {
$cleaned = $message;
}
return $cleaned;
}
private static function removeSig($message)
{
$sigpos = strrpos($message, "\n-- \n");
$quotepos = strrpos($message, "[/quote]");
if ($sigpos == 0) {
// Especially for web.de who are using that as a separator
$message = str_replace("\n___________________________________________________________\n", "\n-- \n", $message);
$sigpos = strrpos($message, "\n-- \n");
$quotepos = strrpos($message, "[/quote]");
}
// When the signature separator is inside a quote, we don't separate
if (($sigpos < $quotepos) && ($sigpos != 0)) {
return ['body' => $message, 'sig' => ''];
}
$pattern = '/(.*)[\r\n]-- [\r\n](.*)/is';
preg_match($pattern, $message, $result);
if (!empty($result[1]) && !empty($result[2])) {
$cleaned = trim($result[1])."\n";
$sig = trim($result[2]);
} else {
$cleaned = $message;
$sig = '';
}
return ['body' => $cleaned, 'sig' => $sig];
}
private static function removeLinebreak($message)
{
$arrbody = explode("\n", trim($message));
$lines = [];
$lineno = 0;
foreach ($arrbody as $i => $line) {
$currquotelevel = 0;
$currline = $line;
while ((strlen($currline)>0) && ((substr($currline, 0, 1) == '>')
|| (substr($currline, 0, 1) == ' '))) {
if (substr($currline, 0, 1) == '>') {
$currquotelevel++;
}
$currline = ltrim(substr($currline, 1));
}
$quotelevel = 0;
$nextline = trim($arrbody[$i + 1] ?? '');
while ((strlen($nextline)>0) && ((substr($nextline, 0, 1) == '>')
|| (substr($nextline, 0, 1) == ' '))) {
if (substr($nextline, 0, 1) == '>') {
$quotelevel++;
}
$nextline = ltrim(substr($nextline, 1));
}
if (!empty($lines[$lineno])) {
if (substr($lines[$lineno], -1) != ' ') {
$lines[$lineno] .= ' ';
}
while ((strlen($line)>0) && ((substr($line, 0, 1) == '>')
|| (substr($line, 0, 1) == ' '))) {
$line = ltrim(substr($line, 1));
}
} else {
$lines[$lineno] = '';
}
$lines[$lineno] .= $line;
if (((substr($line, -1, 1) != ' '))
|| ($quotelevel != $currquotelevel)) {
$lineno++;
}
}
return implode("\n", $lines);
}
private static function convertQuote($body, $reply)
{
// Convert Quotes
$arrbody = explode("\n", trim($body));
$arrlevel = [];
for ($i = 0; $i < count($arrbody); $i++) {
$quotelevel = 0;
$quoteline = $arrbody[$i];
while ((strlen($quoteline)>0) and ((substr($quoteline, 0, 1) == '>')
|| (substr($quoteline, 0, 1) == ' '))) {
if (substr($quoteline, 0, 1) == '>')
$quotelevel++;
$quoteline = ltrim(substr($quoteline, 1));
}
$arrlevel[$i] = $quotelevel;
$arrbody[$i] = $quoteline;
}
$quotelevel = 0;
$arrbodyquoted = [];
for ($i = 0; $i < count($arrbody); $i++) {
$previousquote = $quotelevel;
$quotelevel = $arrlevel[$i];
while ($previousquote < $quotelevel) {
$quote = "[quote]";
$arrbody[$i] = $quote.$arrbody[$i];
$previousquote++;
}
while ($previousquote > $quotelevel) {
$arrbody[$i] = '[/quote]'.$arrbody[$i];
$previousquote--;
}
$arrbodyquoted[] = $arrbody[$i];
}
while ($quotelevel > 0) {
$arrbodyquoted[] = '[/quote]';
$quotelevel--;
}
$body = implode("\n", $arrbodyquoted);
if (strlen($body) > 0) {
$body = $body."\n\n";
}
if ($reply) {
$body = self::removeToFu($body);
}
return $body;
}
private static function removeToFu($message)
{
$message = trim($message);
do {
$oldmessage = $message;
$message = preg_replace('=\[/quote\][\s](.*?)\[quote\]=i', '$1', $message);
$message = str_replace("[/quote][quote]", "", $message);
} while ($message != $oldmessage);
$quotes = [];
$startquotes = 0;
$start = 0;
while (($pos = strpos($message, '[quote', $start)) > 0) {
$quotes[$pos] = -1;
$start = $pos + 7;
$startquotes++;
}
$endquotes = 0;
$start = 0;
while (($pos = strpos($message, '[/quote]', $start)) > 0) {
$start = $pos + 7;
$endquotes++;
}
while ($endquotes < $startquotes) {
$message .= '[/quote]';
++$endquotes;
}
$start = 0;
while (($pos = strpos($message, '[/quote]', $start)) > 0) {
$quotes[$pos] = 1;
$start = $pos + 7;
}
if (strtolower(substr($message, -8)) != '[/quote]')
return($message);
krsort($quotes);
$quotelevel = 0;
$quotestart = 0;
foreach ($quotes as $index => $quote) {
$quotelevel += $quote;
if (($quotelevel == 0) and ($quotestart == 0))
$quotestart = $index;
}
if ($quotestart != 0) {
$message = trim(substr($message, 0, $quotestart))."\n[spoiler]".substr($message, $quotestart+7, -8).'[/spoiler]';
}
return $message;
}
}