142 lines
3.3 KiB
Go
142 lines
3.3 KiB
Go
// figures out if your hostname is valid
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// then checks if your DNS is setup correctly
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package linuxstatus
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import (
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"io/ioutil"
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"go.wit.com/log"
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// will try to get this hosts FQDN
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"github.com/Showmax/go-fqdn"
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)
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func (ls *LinuxStatus) GetDomainName() string {
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if ! me.Ready() {return ""}
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return me.domainname.Get()
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}
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func (ls *LinuxStatus) setDomainName() {
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if ! me.Ready() {return}
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dn := run("domainname")
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if (me.domainname.Get() != dn) {
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log.Log(CHANGE, "domainname has changed from", me.GetDomainName(), "to", dn)
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me.domainname.Set(dn)
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me.changed = true
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}
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}
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func (ls *LinuxStatus) GetHostname() string {
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if ! me.Ready() {return ""}
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return me.hostname.Get()
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}
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func (ls *LinuxStatus) ValidHostname() bool {
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if ! me.Ready() {return false}
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if me.hostnameStatus.Get() == "WORKING" {
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return true
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}
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return false
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}
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func (ls *LinuxStatus) setHostname(newname string) {
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if ! me.Ready() {return}
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if newname == me.hostname.Get() {
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return
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}
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log.Log(CHANGE, "hostname has changed from", me.GetHostname(), "to", newname)
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me.hostname.Set(newname)
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me.changed = true
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}
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func (ls *LinuxStatus) GetHostShort() string {
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if ! me.Ready() {return ""}
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return me.hostshort.Get()
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}
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func (ls *LinuxStatus) setHostShort() {
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if ! me.Ready() {return}
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hshort := run("hostname -s")
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if (me.hostshort.Get() != hshort) {
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log.Log(CHANGE, "hostname -s has changed from", me.hostshort.Get(), "to", hshort)
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me.hostshort.Set(hshort)
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me.changed = true
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}
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}
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func lookupHostname() {
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if ! me.Ready() {return}
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var err error
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var hostfqdn string = "broken"
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hostfqdn, err = fqdn.FqdnHostname()
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if (err != nil) {
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log.Error(err, "FQDN hostname error")
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return
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}
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log.Log(NET, "full hostname should be: ", hostfqdn)
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me.setDomainName()
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me.setHostShort()
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// these are authoritative
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// if they work wrong, your linux configuration is wrong.
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// Do not complain.
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// Fix your distro if your box is otherwise not working this way
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hshort := me.GetHostShort() // from `hostname -s`
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dn := me.GetDomainName() // from `domanname`
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hostname := me.GetHostname() // from `hostname -f`
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if hostfqdn != hostname {
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log.Log(WARN, "hostname", hostname, "does not equal fqdn.FqdnHostname()", hostfqdn)
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// TODO: figure out what is wrong
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}
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var test string
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test = hshort + "." + dn
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me.setHostname(test)
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if (hostname != test) {
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log.Log(CHANGE, "hostname", hostname, "does not equal", test)
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if (me.hostnameStatus.Get() != "BROKEN") {
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log.Log(CHANGE, "hostname", hostname, "does not equal", test)
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me.changed = true
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me.hostnameStatus.Set("BROKEN")
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}
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} else {
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if (me.hostnameStatus.Get() != "WORKING") {
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log.Log(CHANGE, "hostname", hostname, "is valid")
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me.hostnameStatus.Set("WORKING")
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me.changed = true
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}
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}
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}
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// returns true if the hostname is good
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// check that all the OS settings are correct here
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// On Linux, /etc/hosts, /etc/hostname
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// and domainname and hostname
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func goodHostname() bool {
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content, err := ioutil.ReadFile("/etc/hostname")
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if err != nil {
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// this needs to be a fixWindow() error
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log.Error(err)
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}
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hostname := string(content)
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log.Log(NOW, "hostname =", hostname)
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hs := run("hostname -s")
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dn := run("domainname")
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log.Log(NOW, "hostname short =", hs, "domainname =", dn)
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tmp := hs + "." + dn
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if (hostname == tmp) {
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log.Log(NOW, "hostname seems to be good", hostname)
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return true
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}
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return false
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}
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