// Given a record allow settings to be updated.
func updateRecord(d *diskv.Diskv, name string) error {
var h Host
val, err := d.Read(md5sum(name))
if err != nil {
return fmt.Errorf("no configuration found for %s\n", name)
}
err = json.Unmarshal(val, &h)
if err != nil {
return fmt.Errorf("failed to parse the configuration: %s\n", err.Error())
}
err = h.updateConfig()
if err != nil {
return fmt.Errorf("failed to update the host information: %s", err.Error())
}
val, err = json.Marshal(h)
if err != nil {
return err
}
d.Write(md5sum(name), []byte(val))
return nil
}
// Given a record remove it from from the datastore.
func removeRecord(d *diskv.Diskv, name string) error {
err := d.Erase(md5sum(name))
if err != nil {
return fmt.Errorf("no configuration found for %s\n", name)
}
return nil
}
// Create the configuration record and store it in the datastore
func addRecord(d *diskv.Diskv, name, hostInfo string) error {
h := Host{Nickname: name, KeepAlive: 30}
var err error
if hostInfo == "" {
err = h.interactiveConfig()
if err != nil {
return err
}
} else {
info := strings.Split(hostInfo, ":")
err = h.config(info)
if err != nil {
return err
}
}
val, err := json.Marshal(h)
if err != nil {
return err
}
d.Write(md5sum(name), []byte(val))
return nil
}
// Fetch a record from the datastore and display the current configuration to the user
func getRecord(d *diskv.Diskv, name string) error {
val, err := d.Read(md5sum(name))
if err != nil {
return fmt.Errorf("no configuration found for %s", name)
}
fmt.Println("Configuration for", name)
fmt.Println(string(val))
return nil
}
// Lets the nickname for all configurations currently in the datastore
func listRecords(d *diskv.Diskv) error {
var h Host
keyChan, keyCount := d.Keys(nil), 0
for key := range keyChan {
val, err := d.Read(key)
if err != nil {
return err
}
err = json.Unmarshal(val, &h)
if err != nil {
return err
}
fmt.Printf("%s: %s\n", h.Nickname, val)
keyCount++
}
fmt.Println("Total configuration(s) currently stored:", keyCount)
return nil
}
func writeFile(d *diskv.Diskv) error {
home, err := getHome()
if err != nil {
return errors.New("failed to get vaild home directory")
}
var h []Host
keyChan := d.Keys(nil)
for key := range keyChan {
val, err := d.Read(key)
if err != nil {
return err
}
var t Host
err = json.Unmarshal(val, &t)
if err != nil {
return err
}
t.Key = getSSHKeyPath(home, t.Key)
h = append(h, t)
}
configFile := path.Join(home, ".ssh", "config")
fo, err := os.Create(configFile)
if err != nil {
return errors.New("could not write SSH configuration file")
}
temp := template.Must(template.New("configuration").Parse(configuration))
err = temp.Execute(fo, h)
if err != nil {
return err
}
err = fo.Close()
if err != nil {
return errors.New("could not close SSH configuration file")
}
return nil
}