From b263b211a5417b1e8e509a7fb36099867465e41a Mon Sep 17 00:00:00 2001
From: "Michael Kaufmann (d00p)" <d00p@froxlor.org>
Date: Mon, 28 Aug 2017 15:35:07 +0200
Subject: [PATCH] generate multiline txt-record if content is too long, fixes
 #472

Signed-off-by: Michael Kaufmann (d00p) <d00p@froxlor.org>
---
 lib/classes/dns/class.DnsEntry.php | 26 +++++++++++++++++++++++++-
 1 file changed, 25 insertions(+), 1 deletion(-)

diff --git a/lib/classes/dns/class.DnsEntry.php b/lib/classes/dns/class.DnsEntry.php
index c5bcab79..27f0dd8f 100644
--- a/lib/classes/dns/class.DnsEntry.php
+++ b/lib/classes/dns/class.DnsEntry.php
@@ -41,7 +41,31 @@ class DnsEntry
 
 	public function __toString()
 	{
-		$result = $this->record . "\t" . $this->ttl . "\t" . $this->class . "\t" . $this->type . "\t" . (($this->priority >= 0 && ($this->type == 'MX' || $this->type == 'SRV')) ? $this->priority . "\t" : "") . $this->content . PHP_EOL;
+		$_content = $this->content;
+		// check content length for txt records for bind9 (multiline)
+		if (Settings::Get('system.dns_server') != 'pdns' && $this->type == 'TXT' && strlen($_content) >= 64) {
+			// split string
+			$_contentlines = str_split($_content, 63);
+			// first line
+			$_l = array_shift($_contentlines);
+			// check for starting quote
+			if (substr($_l, 0, 1) == '"') {
+				$_l = substr($_l, 1);
+			}
+			$_content = '( "' . $_l . '"' . PHP_EOL;
+			$_l = array_pop($_contentlines);
+			// check for ending quote
+			if (substr($_l, -1) == '"') {
+				$_l = substr($_l, 0, -1);
+			}
+			foreach ($_contentlines as $_cl) {
+				// lines in between
+				$_content .= "\t\t\t\t" . '"' . $_cl . '"' . PHP_EOL;
+			}
+			// last line
+			$_content .= "\t\t\t\t" . '"'.$_l.'" )';
+		}
+		$result = $this->record . "\t" . $this->ttl . "\t" . $this->class . "\t" . $this->type . "\t" . (($this->priority >= 0 && ($this->type == 'MX' || $this->type == 'SRV')) ? $this->priority . "\t" : "") . $_content . PHP_EOL;
 		return $result;
 	}
 }