getDomainname()

Signed-off-by: Jeff Carr <jcarr@wit.com>

Makefile

@@ -1,8 +1,5 @@
 all:
-	@echo
-	@echo Run: make redomod
-	@echo
-	@# ./myrepos >/tmp/myrepos.stderr 2>&1
+	GO111MODULE=off go vet
 
 goimports:
 	goimports -w *.go

hostname.go

@@ -3,8 +3,11 @@
 package linuxstatus
 
 import (
+	"fmt"
 	"io/ioutil"
+	"strings"
 
+	"go.wit.com/lib/gui/shell"
 	"go.wit.com/log"
 
 	// will try to get this hosts FQDN
@@ -80,6 +83,17 @@ func (ls *LinuxStatus) setHostShort() {
 	}
 }
 
+// getDomainName extracts the domain name from a given hostname
+func getDomainName(hostname string) (string, error) {
+	parts := strings.Split(hostname, ".")
+	if len(parts) < 3 {
+		return "", fmt.Errorf("hostname '%s' is too short to extract a domain name", hostname)
+	}
+	// Join all parts except the first one, which is assumed to be a subdomain
+	domain := strings.Join(parts[1:], ".")
+	return domain, nil
+}
+
 func lookupHostname() {
 	if !me.Ready() {
 		return
@@ -107,6 +121,27 @@ func lookupHostname() {
 	if hostfqdn != hostname {
 		log.Log(WARN, "hostname", hostname, "does not equal fqdn.FqdnHostname()", hostfqdn)
 		// TODO: figure out what is wrong
+		if dn == "(none)" {
+			realdn, err := getDomainName(hostfqdn)
+			if err == nil {
+				log.Log(WARN, "need to run: 'domainname", realdn, "' here")
+				me.changed = true
+				me.hostnameStatus.SetText("FIXING")
+				shell.RunPath("", []string{"domainname", realdn})
+				return
+			} else {
+				log.Log(WARN, "getDomainName() err =", err)
+				log.Log(WARN, "/etc/hostname is too short. let the user set the name here.")
+				// me.changed = true
+				me.hostnameStatus.SetText("INVALID DOMAIN NAME")
+				// return
+			}
+		}
+		log.Log(WARN, "don't know what to do here with domainname")
+		log.Log(WARN, "check that /etc/hostname is valid?")
+		// me.changed = true
+		me.hostnameStatus.SetText("UNKNOWN")
+		// return
 	}
 
 	var test string

linuxloop.go

@@ -44,7 +44,7 @@ func linuxLoop() {
 	sort.Strings(a)
 	tmp := strings.Join(a, "\n")
 	if tmp != me.workingIPv4.String() {
-		log.Log(CHANGE, "realAAAA() your real IPv6 addresses changed")
+		log.Log(CHANGE, "realA() your real IPv6 addresses changed")
 		me.changed = true
 		me.workingIPv4.SetText(tmp)
 	}

net.go

@@ -101,7 +101,7 @@ func realA() []string {
 	return a
 }
 
-func checkDNS() (map[string]*IPtype, map[string]*IPtype) {
+func checkDNSOld() (map[string]*IPtype, map[string]*IPtype) {
 	var ipv4s map[string]*IPtype
 	var ipv6s map[string]*IPtype