more sane logging

ex/fksd/config.go

@@ -2,7 +2,6 @@ package main
 
 import (
 	"dns"
-	"log"
 	"strings"
 )
 
@@ -24,10 +23,15 @@ func config(w dns.ResponseWriter, req *dns.Msg, c *Config) {
 	// SUBSYSTEM. IN TXT "OPERATION<SPACE>OPTIONS..."
 	// ZONE. IN TXT "READ origin /z/bloep" - absolute path in fs
 
-	// TODO: check tsig
-	if *l {
-		log.Printf("fksd: config commmand")
+	if !req.IsUpdate() {
+		logPrintf("non config command")
+		m := new(dns.Msg)
+		w.Write(m.SetRcode(req, dns.RcodeFormatError))
+		return
 	}
+
+	// TODO: check tsig
+	logPrintf("config commmand")
 	for _, rr := range req.Ns {
 		t, ok := rr.(*dns.RR_TXT)
 
@@ -53,13 +57,9 @@ func configZONE(t *dns.RR_TXT, c *Config) error {
 	}
 	switch strings.ToUpper(sx[0]) {
 	case "READ":
-		if *l {
-			log.Printf("fksd: config: READ %s %s\n", dns.Fqdn(sx[1]), sx[2])
-		}
+		logPrintf("config: READ %s %s\n", dns.Fqdn(sx[1]), sx[2])
 		if e := c.ReadZone(dns.Fqdn(sx[1]), sx[2]); e != nil {
-			if *l {
-				log.Printf("fksd: failed to read %s: %s\n", sx[2], e.Error())
-			}
+			logPrintf("failed to read %s: %s\n", sx[2], e.Error())
 			return e
 		}
 		return nil

ex/fksd/log.go

@@ -0,0 +1,11 @@
+package main
+
+import "log"
+
+const NAME = "fksd: "
+
+func logPrintf(format string, a ...interface{}) {
+	if *l {
+		log.Printf(NAME + format, a...)
+	}
+}

ex/fksd/main.go

@@ -34,7 +34,7 @@ forever:
 	for {
 		select {
 		case <-sig:
-			log.Printf("fksd: signal received, stopping\n")
+			logPrintf("signal received, stopping")
 			break forever
 		}
 	}

ex/fksd/serve.go

@@ -2,7 +2,6 @@ package main
 
 import (
 	"dns"
-	"log"
 )
 
 // Create skeleton edns opt RR from the query and
@@ -21,9 +20,7 @@ func serve(w dns.ResponseWriter, req *dns.Msg, z *dns.Zone) {
 	if z == nil {
 		panic("fksd: no zone")
 	}
-	if *l {
-		log.Printf("fksd: [zone %s] incoming %s %s %d from %s\n", z.Origin, req.Question[0].Name, dns.Rr_str[req.Question[0].Qtype], req.MsgHdr.Id, w.RemoteAddr())
-	}
+	logPrintf("[zone %s] incoming %s %s %d from %s\n", z.Origin, req.Question[0].Name, dns.Rr_str[req.Question[0].Qtype], req.MsgHdr.Id, w.RemoteAddr())
 	// Ds Handling
 	// Referral
 	// if we find something with NonAuth = true, it means

msg.go

@@ -81,6 +81,7 @@ type Msg struct {
 	MsgHdr
 	Compress   bool       // If true, the message will be compressed when converted to wire format.
 	Size       int        // Number of octects in the message received from the wire.
+	// Remote addr? back
 	Question   []Question // Holds the RR(s) of the question section.
 	Answer     []RR       // Holds the RR(s) of the answer section.
 	Ns         []RR       // Holds the RR(s) of the authority section.