Mail: Removing signatures, gpg, unnecessary line breaks

3 files changed, 240 insertions, 2 deletions

diff --git a/include/email.php b/include/email.php
index 659978b6e..a3449a424 100755
--- a/include/email.php
+++ b/include/email.php
@@ -1,5 +1,7 @@
 <?php
 require_once('include/html2plain.php');
+require_once('include/msgclean.php');
+require_once('include/quoteconvert.php');
 
 function email_connect($mailbox,$username,$password) {
 	if(! function_exists('imap_open'))
@@ -86,6 +88,7 @@ function email_get_msg($mbox,$uid) {
 
 	if(! $struc->parts) {
 		$ret['body'] = email_get_part($mbox,$uid,$struc,0, 'html');
+		$html = $ret['body'];
 
 		if (trim($ret['body']) == '')
 			$ret['body'] = email_get_part($mbox,$uid,$struc,0, 'plain');
@@ -107,6 +110,17 @@ function email_get_msg($mbox,$uid) {
 		else
 			$ret['body'] = $text;
 	}
+
+	$ret['body'] = removegpg($ret['body']);
+	$msg = removesig($ret['body']);
+	$ret['body'] = $msg['body'];
+	$ret['body'] = convertquote($ret['body'], false);
+
+	if (trim($html) != '')
+		$ret['body'] = removelinebreak($ret['body']);
+
+	$ret['body'] = unifyattributionline($ret['body']);
+
 	return $ret;
 }
 
diff --git a/include/msgclean.php b/include/msgclean.php
new file mode 100644
index 000000000..284ad1ce4
--- /dev/null
+++ b/include/msgclean.php
@@ -0,0 +1,225 @@
+<?php
+
+function savereplace($pattern, $replace, $text)
+{
+	$save = $text;
+
+	$text = preg_replace($pattern, $replace, $text);
+
+	if ($text == '')
+		$text = $save;
+	return($text);
+}
+
+function unifyattributionline($message)
+{
+	$quotestr = array('quote', 'collapsed');
+	foreach ($quotestr as $quote) {
+
+		$message = savereplace('/----- Original Message -----\s.*?From: "([^<"].*?)" <(.*?)>\s.*?To: (.*?)\s*?Cc: (.*?)\s*?Sent: (.*?)\s.*?Subject: ([^\n].*)\s*\['.$quote.'\]/i', "[".$quote."='$1']\n", $message);
+		$message = savereplace('/----- Original Message -----\s.*?From: "([^<"].*?)" <(.*?)>\s.*?To: (.*?)\s*?Sent: (.*?)\s.*?Subject: ([^\n].*)\s*\['.$quote.'\]/i', "[".$quote."='$1']\n", $message);
+
+		$message = savereplace('/-------- Original-Nachricht --------\s*\['.$quote.'\]\nDatum: (.*?)\nVon: (.*?) <(.*?)>\nAn: (.*?)\nBetreff: (.*?)\n/i', "[".$quote."='$2']\n", $message);
+		$message = savereplace('/-------- Original-Nachricht --------\s*\['.$quote.'\]\sDatum: (.*?)\s.*Von: "([^<"].*?)" <(.*?)>\s.*An: (.*?)\n.*/i', "[".$quote."='$2']\n", $message);
+		$message = savereplace('/-------- Original-Nachricht --------\s*\['.$quote.'\]\nDatum: (.*?)\nVon: (.*?)\nAn: (.*?)\nBetreff: (.*?)\n/i', "[".$quote."='$2']\n", $message);
+
+		$message = savereplace('/-----Urspr.*?ngliche Nachricht-----\sVon: "([^<"].*?)" <(.*?)>\s.*Gesendet: (.*?)\s.*An: (.*?)\s.*Betreff: ([^\n].*?).*:\s*\['.$quote.'\]/i', "[".$quote."='$1']\n", $message);
+		$message = savereplace('/-----Urspr.*?ngliche Nachricht-----\sVon: "([^<"].*?)" <(.*?)>\s.*Gesendet: (.*?)\s.*An: (.*?)\s.*Betreff: ([^\n].*?)\s*\['.$quote.'\]/i', "[".$quote."='$1']\n", $message);
+
+		$message = savereplace('/Am (.*?), schrieb (.*?):\s*\['.$quote.'\]/i', "[".$quote."='$2']\n", $message);
+
+		$message = savereplace('/Am .*?, \d+ .*? \d+ \d+:\d+:\d+ \+\d+\sschrieb\s(.*?)\s<(.*?)>:\s*\['.$quote.'\]/i', "[".$quote."='$1']\n", $message);
+
+		$message = savereplace('/Am (.*?) schrieb (.*?) <(.*?)>:\s*\['.$quote.'\]/i', "[".$quote."='$2']\n", $message);
+		$message = savereplace('/Am (.*?) schrieb <(.*?)>:\s*\['.$quote.'\]/i', "[".$quote."='$2']\n", $message);
+		$message = savereplace('/Am (.*?) schrieb (.*?):\s*\['.$quote.'\]/i', "[".$quote."='$2']\n", $message);
+		$message = savereplace('/Am (.*?) schrieb (.*?)\n(.*?):\s*\['.$quote.'\]/i', "[".$quote."='$2']\n", $message);
+
+		$message = savereplace('/(\d+)\/(\d+)\/(\d+) ([^<"].*?) <(.*?)>\s*\['.$quote.'\]/i', "[".$quote."='$4']\n", $message);
+
+		$message = savereplace('/On .*?, \d+ .*? \d+ \d+:\d+:\d+ \+\d+\s(.*?)\s<(.*?)>\swrote:\s*\['.$quote.'\]/i', "[".$quote."='$1']\n", $message);
+
+		$message = savereplace('/On (.*?) at (.*?), (.*?)\s<(.*?)>\swrote:\s*\['.$quote.'\]/i', "[".$quote."='$3']\n", $message);
+		$message = savereplace('/On (.*?)\n([^<].*?)\s<(.*?)>\swrote:\s*\['.$quote.'\]/i', "[".$quote."='$2']\n", $message);
+		$message = savereplace('/On (.*?), (.*?), (.*?)\s<(.*?)>\swrote:\s*\['.$quote.'\]/i', "[".$quote."='$3']\n", $message);
+		$message = savereplace('/On ([^,].*?), (.*?)\swrote:\s*\['.$quote.'\]/i', "[".$quote."='$2']\n", $message);
+		$message = savereplace('/On (.*?), (.*?)\swrote\s*\['.$quote.'\]/i', "[".$quote."='$2']\n", $message);
+
+		// Der loescht manchmal den Body - was eigentlich unmoeglich ist
+		$message = savereplace('/On (.*?),(.*?),(.*?),(.*?), (.*?) wrote:\s*\['.$quote.'\]/i', "[".$quote."='$5']\n", $message);
+
+		$message = savereplace('/Zitat von ([^<].*?) <(.*?)>:\s*\['.$quote.'\]/i', "[".$quote."='$1']\n", $message);
+
+		$message = savereplace('/Quoting ([^<].*?) <(.*?)>:\s*\['.$quote.'\]/i', "[".$quote."='$1']\n", $message);
+
+		$message = savereplace('/From: "([^<"].*?)" <(.*?)>\s*\['.$quote.'\]/i', "[".$quote."='$1']\n", $message);
+		$message = savereplace('/From: <(.*?)>\s*\['.$quote.'\]/i', "[".$quote."='$1']\n", $message);
+
+		$message = savereplace('/Du \(([^)].*?)\) schreibst:\s*\['.$quote.'\]/i', "[".$quote."='$1']\n", $message);
+
+		$message = savereplace('/--- (.*?) <.*?> schrieb am (.*?):\s*\['.$quote.'\]/i', "[".$quote."='$1']\n", $message);
+		$message = savereplace('/--- (.*?) schrieb am (.*?):\s*\['.$quote.'\]/i', "[".$quote."='$1']\n", $message);
+
+		$message = savereplace('/\* (.*?) <(.*?)> hat geschrieben:\s*\['.$quote.'\]/i', "[".$quote."='$1']\n", $message);
+
+		$message = savereplace('/(.*?) <(.*?)> schrieb (.*?)\):\s*\['.$quote.'\]/i', "[".$quote."='$1']\n", $message);
+		$message = savereplace('/(.*?) <(.*?)> schrieb am (.*?) um (.*):\s*\['.$quote.'\]/i', "[".$quote."='$1']\n", $message);
+		$message = savereplace('/(.*?) schrieb am (.*?) um (.*):\s*\['.$quote.'\]/i', "[".$quote."='$1']\n", $message);
+		$message = savereplace('/(.*?) \((.*?)\) schrieb:\s*\['.$quote.'\]/i', "[".$quote."='$2']\n", $message);
+		$message = savereplace('/(.*?) schrieb:\s*\['.$quote.'\]/i', "[".$quote."='$1']\n", $message);
+
+		$message = savereplace('/(.*?) <(.*?)> writes:\s*\['.$quote.'\]/i', "[".$quote."='$1']\n", $message);
+		$message = savereplace('/(.*?) \((.*?)\) writes:\s*\['.$quote.'\]/i', "[".$quote."='$2']\n", $message);
+		$message = savereplace('/(.*?) writes:\s*\['.$quote.'\]/i', "[".$quote."='$1']\n", $message);
+
+		$message = savereplace('/\* (.*?) wrote:\s*\['.$quote.'\]/i', "[".$quote."='$1']\n", $message);
+		$message = savereplace('/(.*?) wrote \(.*?\):\s*\['.$quote.'\]/i', "[".$quote."='$1']\n", $message);
+		$message = savereplace('/(.*?) wrote:\s*\['.$quote.'\]/i', "[".$quote."='$1']\n", $message);
+
+		$message = savereplace('/([^<].*?) <.*?> hat am (.*?)\sum\s(.*)\sgeschrieben:\s*\['.$quote.'\]/i', "[".$quote."='$1']\n", $message);
+
+		$message = savereplace('/(\d+)\/(\d+)\/(\d+) ([^<"].*?) <(.*?)>:\s*\['.$quote.'\]/i', "[".$quote."='$4']\n", $message);
+		$message = savereplace('/(\d+)\/(\d+)\/(\d+) (.*?) <(.*?)>\s*\['.$quote.'\]/i', "[".$quote."='$4']\n", $message);
+		$message = savereplace('/(\d+)\/(\d+)\/(\d+) <(.*?)>:\s*\['.$quote.'\]/i', "[".$quote."='$4']\n", $message);
+		$message = savereplace('/(\d+)\/(\d+)\/(\d+) <(.*?)>\s*\['.$quote.'\]/i', "[".$quote."='$4']\n", $message);
+
+		$message = savereplace('/(.*?) <(.*?)> schrubselte:\s*\['.$quote.'\]/i', "[".$quote."='$1']\n", $message);
+		$message = savereplace('/(.*?) \((.*?)\) schrubselte:\s*\['.$quote.'\]/i', "[".$quote."='$2']\n", $message);
+
+	}
+	return($message);
+}
+
+function removegpg($message)
+{
+
+	$pattern = '/(.*)\s*-----BEGIN PGP SIGNED MESSAGE-----\s*[\r\n].*Hash:.*?[\r\n](.*)'.
+		'[\r\n]\s*-----BEGIN PGP SIGNATURE-----\s*[\r\n].*'.
+		'[\r\n]\s*-----END PGP SIGNATURE-----(.*)/is';
+
+	preg_match($pattern, $message, $result);
+
+	$cleaned = trim($result[1].$result[2].$result[3]);
+
+	$cleaned = str_replace(array("\n- --\n", "\n- -"), array("\n-- \n", "\n-"), $cleaned);
+
+
+	if ($cleaned == '')
+		$cleaned = $message;
+
+	return($cleaned);
+}
+
+function removesig($message)
+{
+	$sigpos = strrpos($message, "\n-- \n");
+	$quotepos = strrpos($message, "[/quote]");
+
+	if ($sigpos == 0) {
+		// Speziell fuer web.de, die das als Trenner verwenden
+		$message = str_replace("\n___________________________________________________________\n", "\n-- \n", $message);
+		$sigpos = strrpos($message, "\n-- \n");
+		$quotepos = strrpos($message, "[/quote]");
+	}
+
+	// Sollte sich der Signaturtrenner innerhalb eines Quotes befinden
+	// wird keine Signaturtrennung ausgefuehrt
+	if (($sigpos < $quotepos) and ($sigpos != 0))
+		return(array('body' => $message, 'sig' => ''));
+
+	// To-Do: Regexp umstellen, so dass auf 1 oder kein Leerzeichen
+	// geprueft wird
+	//$message = str_replace("\n--\n", "\n-- \n", $message);
+
+	$pattern = '/(.*)[\r\n]-- [\r\n](.*)/is';
+
+	preg_match($pattern, $message, $result);
+
+	if (($result[1] != '') and ($result[2] != '')) {
+		$cleaned = trim($result[1])."\n";
+		$sig = trim($result[2]);
+		//	'[hr][size=x-small][color=darkblue]'.trim($result[2]).'[/color][/size]';
+	} else {
+		$cleaned = $message;
+		$sig = '';
+	}
+
+	return(array('body' => $cleaned, 'sig' => $sig));
+}
+
+function removelinebreak($message)
+{
+	$arrbody = explode("\n", trim($message));
+
+	$lines = array();
+	$lineno = 0;
+
+	foreach($arrbody as $i => $line) {
+		$currquotelevel = 0;
+		$currline = $line;
+		while ((strlen($currline)>0) and ((substr($currline, 0, 1) == '>')
+ 			or (substr($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) and ((substr($nextline, 0, 1) == '>')
+ 			or (substr($nextline, 0, 1) == ' '))) {
+			if (substr($nextline, 0, 1) == '>')
+				$quotelevel++;
+
+			$nextline = ltrim(substr($nextline, 1));
+		}
+
+		$len = strlen($line);
+		$firstword = strpos($nextline.' ', ' ');
+
+		$specialchars = ((substr(trim($nextline), 0, 1) == '-') or
+				(substr(trim($nextline), 0, 1) == '=') or
+				(substr(trim($nextline), 0, 1) == '*') or
+				(substr(trim($nextline), 0, 1) == '·') or
+				(substr(trim($nextline), 0, 4) == '[url') or
+				(substr(trim($nextline), 0, 5) == '[size') or
+				(substr(trim($nextline), 0, 7) == 'http://') or
+				(substr(trim($nextline), 0, 8) == 'https://'));
+
+		if (!$specialchars) 
+			$specialchars = ((substr(rtrim($line), -1) == '-') or
+					(substr(rtrim($line), -1) == '=') or
+					(substr(rtrim($line), -1) == '*') or
+					(substr(rtrim($line), -1) == '·') or
+					(substr(rtrim($line), -6) == '[/url]') or
+					(substr(rtrim($line), -7) == '[/size]'));
+
+		//if ($specialchars)
+		//	echo ("Special\n");
+
+		if ($lines[$lineno] != '') {
+			if (substr($lines[$lineno], -1) != ' ')
+			$lines[$lineno] .= ' ';
+
+			while ((strlen($line)>0) and ((substr($line, 0, 1) == '>')
+ 			or (substr($line, 0, 1) == ' '))) {
+
+				$line = ltrim(substr($line, 1));
+			}
+
+		}
+		//else
+		//	$lines[$lineno] = $quotelevel.'-'.$len.'-'.$firstword.'-';
+
+		$lines[$lineno] .= $line;
+		//if ((($len + $firstword < 68) and (substr($line, -1, 1) != ' '))
+		//	or ($quotelevel != $currquotelevel) or $specialchars)
+		if (((substr($line, -1, 1) != ' '))
+			or ($quotelevel != $currquotelevel))
+			$lineno++;
+	}
+	return(implode("\n", $lines));
+
+}
+?>
diff --git a/include/poller.php b/include/poller.php
index cfbc46b87..3be6caebd 100755
--- a/include/poller.php
+++ b/include/poller.php
@@ -1,7 +1,6 @@
 <?php
 
 require_once("boot.php");
-require_once("include/quoteconvert.php");
 
 
 function poller_run($argv, $argc){
@@ -494,7 +493,7 @@ function poller_run($argv, $argc){
 								logger("Mail: can't fetch msg ".$msg_uid);
 								continue;
 							}
-							$datarray['body'] = escape_tags(convertquote($r['body'], false));
+							$datarray['body'] = escape_tags($r['body']);
 
 							logger("Mail: Importing ".$msg_uid);