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// GNU GENERAL PUBLIC LICENSE Version 3, 29 June 2007
// Copyright (c) 2023 WIT.COM, Inc.
// This is a control panel for DNS
// This is the main Linux kernel / OS code
// to check your network settings are correct
// This does (and should do) no network or external checking
// This is just the state of your OS
package linuxstatus
import (
"io/ioutil"
"os"
"os/user"
"sort"
"strconv"
"strings"
"go.wit.com/log"
)
func linuxLoop() {
me.changed = false
// checks for a VALID hostname
lookupHostname()
if me.changed {
log.Log(CHANGE, "lookupHostname() detected a change")
}
// scans the linux network intefaces for your available IPv4 & IPv6 addresses
scanInterfaces()
if me.changed {
log.Log(CHANGE, "scanInterfaces() detected a change")
}
for i, t := range me.ifmap {
log.Log(NET, strconv.Itoa(i)+" iface = "+t.iface.Name)
}
// get all the real A records from all the network interfaces linux can see
a := realA()
sort.Strings(a)
tmp := strings.Join(a, "\n")
if tmp != me.workingIPv4.String() {
log.Log(CHANGE, "realAAAA() your real IPv6 addresses changed")
me.changed = true
me.workingIPv4.SetValue(tmp)
}
// get all the real AAAA records from all the network interfaces linux can see
aaaa := realAAAA()
sort.Strings(aaaa)
tmp = strings.Join(aaaa, "\n")
if tmp != me.workingIPv6.String() {
log.Log(CHANGE, "realAAAA() your real IPv6 addresses changed")
me.changed = true
me.workingIPv6.SetValue(tmp)
}
user, _ := user.Current()
tmp = user.Username + " (" + strconv.Itoa(os.Getuid()) + ")"
if tmp != me.uid.String() {
log.Log(CHANGE, "os.Getuid =", user.Username, os.Getuid())
me.changed = true
me.uid.SetValue(tmp)
}
content, _ := ioutil.ReadFile("/etc/resolv.conf")
var ns []string
for _, line := range strings.Split(string(content), "\n") {
parts := strings.Split(line, " ")
if len(parts) > 1 {
if parts[0] == "nameserver" {
ns = append(ns, parts[1])
}
}
}
sort.Strings(ns)
newNS := strings.Join(ns, "\n")
if newNS != me.resolver.String() {
log.Log(CHANGE, "resolver changed in /etc/resolv.conf to", ns)
me.changed = true
me.resolver.SetValue(newNS)
}
/*
processName := getProcessNameByPort(53)
fmt.Println("Process with port 53:", processName)
commPath := filepath.Join("/proc", proc.Name(), "comm")
comm, err := ioutil.ReadFile(commPath)
if err != nil {
return "", err // Error reading the process name
}
return strings.TrimSpace(string(comm)), nil
*/
}
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