ipam/cmd/ip-add.go

/*
Copyright © 2023 Laura Kalb <dev@lauka.net>
*/

package cmd

import (
    "fmt"
    "net/netip"
    "os"
    "os/user"
    "time"

    "github.com/spf13/cobra"
)

var ipaddCmd = &cobra.Command{
    Use:     "add ipaddress [hostname]",
    Short:   "Add new IP address",
    Long:    `Add new IP address`,
    Aliases: []string{"a"},
    Args:    cobra.RangeArgs(1, 2),
    Run: func(cmd *cobra.Command, args []string) {
        var ipaddress, hostname string

        if len(args) == 1 {
            ipaddress = args[0]
            hostname = ""
        } else {
            ipaddress = args[0]
            hostname = args[1]
        }

        ip, parseerr := netip.ParseAddr(ipaddress)

        // Exit if parsed value is no valid IP
        if parseerr != nil {
            fmt.Println("[ERROR]", parseerr)
            os.Exit(1)
        }

        // Exit if parsed value is an IPv6 Address
        // TODO: Implement IPv6 support
        if !ip.Is4() {
            fmt.Printf("[ERROR] IPv6 is not yet supported!\n")
            os.Exit(1)
        }

        subnet, subnetexists := FindBestSubnet(ip)

        if !subnetexists {
            fmt.Printf("[ERROR] Found no suitable subnet for IP %v\n", ipaddress)
            fmt.Printf("[ERROR] Maybe you need to add it first?\n")
            os.Exit(1)
        }

        if subnet.HasIP(ip) {
            fmt.Printf("[ERROR] IP %v already exists in subnet %v\n", ip.String(), subnet.Subnet.String())
            os.Exit(1)
        }

        currentuser, _ := user.Current()
        subnet.Addresses = append(subnet.Addresses, Address{ip, hostname, time.Now(), currentuser.Username})

        writeerr := subnet.WriteSubnet()
        if writeerr != nil {
            fmt.Println("[ERROR]", writeerr)
            os.Exit(1)
        }

        if hostname == "" {
            fmt.Printf("added ip:\nip: %v\n", ipaddress)
        } else {
            fmt.Printf("added ip:\nip: %v\nhostname: %v\n", ipaddress, hostname)
            dnserr := AddDNSFqdn(hostname, ip)
            if dnserr != nil {
                fmt.Println("[ERROR]", writeerr)
                os.Exit(1)
            }
        }
    },
}

func init() {
    ipCmd.AddCommand(ipaddCmd)

    // Here you will define your flags and configuration settings.

    // Cobra supports Persistent Flags which will work for this command
    // and all subcommands, e.g.:
    // addCmd.PersistentFlags().String("foo", "", "A help for foo")

    // Cobra supports local flags which will only run when this command
    // is called directly, e.g.:
    // addCmd.Flags().BoolP("toggle", "t", false, "Help message for toggle")
}