From: Volodymyr Poltavets <Volodymyr.Poltavets@feig.de>
Date: Mon, 15 Mar 2021 17:45:56 +0000 (+0100)
Subject: IP of "zero" means "only delete"
X-Git-Url: https://git.packet-gain.de/?a=commitdiff_plain;h=706960577003cd9f0cb8d0218f0373b4970e722a;p=ddnset.git

IP of "zero" means "only delete"
---

diff --git a/ddnset.go b/ddnset.go
index 4328d78..23f17c0 100644
--- a/ddnset.go
+++ b/ddnset.go
@@ -175,9 +175,15 @@ func knsupdate(host, ip, zone string, ver int) bool {
 	fmt.Fprintf(tmpfile, "server 127.0.0.1\n")
 	fmt.Fprintf(tmpfile, "zone %s\n", zone)
 	fmt.Fprintf(tmpfile, "del %s 300 IN %s\n", host, rectype)
-	fmt.Fprintf(tmpfile, "add %s 300 IN %s %s\n", host, rectype, ip)
+	if "::" != ip && "0.0.0.0" != ip {
+		fmt.Fprintf(tmpfile, "add %s 300 IN %s %s\n", host, rectype, ip)
+	}
 	fmt.Fprintf(tmpfile, "send\n")
 	tmpfile.Close()
+	/*
+		data, _ := ioutil.ReadFile(tmpfile.Name())
+		log.Printf("%s\n", data)
+	*/
 	out, err := exec.Command("/usr/bin/knsupdate", tmpfile.Name()).Output()
 
 	if err != nil {
@@ -289,15 +295,26 @@ func rootHandle(w http.ResponseWriter, r *http.Request) {
 	log.Print("User hosts: ", hosts)
 	//check ip
 	q := r.URL.Query()
-
-	myip := "0.0.0.0"
-	ver := 4
+	log.Print("q: ", q)
+	myip := "[unset]"
+	ver := 0
 	valid := false
 	myip_count := len(q["myip"])
 	log.Print("myips: ", myip_count)
 	if !hostip {
 		if myip_count == 1 {
-			myip, ver, valid = checkIP(q["myip"][0]) //one IP to rule them all
+			myip = q["myip"][0]
+			if "::" == myip {
+				ver = 6
+				valid = true
+				log.Printf("delete AAAA req")
+			} else if "0.0.0.0" == myip {
+				ver = 4
+				valid = true
+				log.Printf("delete A req")
+			} else {
+				myip, ver, valid = checkIP(myip) //one IP to rule them all
+			}
 		}
 		log.Printf("IP: %s (valid:%v, ver:%d)", myip, valid, ver)
 		if !valid {