From b1881f90d4ff039900851308a04e2d9fb2475836 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?William=20Bouzour=C3=A8ne?= <william@bouzourene.ch>
Date: Sat, 12 Apr 2025 14:22:28 +0200
Subject: [PATCH] Split long TXT values in 255 strings

---
 dnsconfig/toml_zones.go | 35 +++++++++++++++++++++++++++++++++++
 1 file changed, 35 insertions(+)

diff --git a/dnsconfig/toml_zones.go b/dnsconfig/toml_zones.go
index e3fda6f..eaead34 100644
--- a/dnsconfig/toml_zones.go
+++ b/dnsconfig/toml_zones.go
@@ -58,6 +58,30 @@ func GetTomlZones() ([]TomlZone, error) {
 			zone.DefaultTTL = 3600
 		}
 
+		for index, record := range zone.TomlRecords {
+			if !strings.EqualFold(record.Type, "TXT") || len(record.Value) <= 255 {
+				continue
+			}
+
+			var newValue string
+			var split string
+			for count, char := range record.Value {
+				split = fmt.Sprintf("%s%c", split, char)
+
+				if (count+1)%255 == 0 || (count+1) == len(record.Value) {
+					if newValue == "" {
+						newValue = fmt.Sprintf("\"%s\"", split)
+					} else {
+						newValue = fmt.Sprintf("%s \"%s\"", newValue, split)
+					}
+
+					split = ""
+				}
+			}
+
+			zone.TomlRecords[index].Value = newValue
+		}
+
 		zones = append(zones, zone)
 	}
 
@@ -77,5 +101,16 @@ func CreateTomlZone(zone TomlZone) error {
 		return err
 	}
 
+	for index, record := range zone.TomlRecords {
+		if !strings.EqualFold(record.Type, "TXT") || len(record.Value) <= 255 {
+			continue
+		}
+
+		newValue := strings.ReplaceAll(record.Value, "\" \"", "")
+		newValue = strings.ReplaceAll(newValue, "\"", "")
+
+		zone.TomlRecords[index].Value = newValue
+	}
+
 	return toml.NewEncoder(file).Encode(&zone)
 }