Revert "Move configuration code out of wwctl"

internal/app/wwctl/configure/ssh/main.go

@@ -1,10 +1,99 @@
 package ssh
 
 import (
-	"github.com/hpcng/warewulf/internal/pkg/configure"
+	"fmt"
+	"os"
+	"path"
+
+	"github.com/hpcng/warewulf/internal/pkg/buildconfig"
+	"github.com/hpcng/warewulf/internal/pkg/util"
+	"github.com/hpcng/warewulf/internal/pkg/wwlog"
+	"github.com/pkg/errors"
 	"github.com/spf13/cobra"
 )
 
 func CobraRunE(cmd *cobra.Command, args []string) error {
-	return configure.Configure("SSH", setShow)
+	return Configure(SetShow)
+}
+
+func Configure(show bool) error {
+	if os.Getuid() == 0 {
+		fmt.Printf("Updating system keys\n")
+
+		wwkeydir := path.Join(buildconfig.SYSCONFDIR(), "warewulf/keys") + "/"
+
+		err := os.MkdirAll(path.Join(buildconfig.SYSCONFDIR(), "warewulf/keys"), 0755)
+		if err != nil {
+			wwlog.Printf(wwlog.ERROR, "Could not create base directory: %s\n", err)
+			os.Exit(1)
+		}
+
+		if !util.IsFile(wwkeydir + "ssh_host_rsa_key") {
+			fmt.Printf("Setting up key: ssh_host_rsa_key\n")
+			err = util.ExecInteractive("ssh-keygen", "-q", "-t", "rsa", "-f", wwkeydir+"ssh_host_rsa_key", "-C", "", "-N", "")
+			if err != nil {
+				return errors.Wrap(err, "failed to exec ssh-keygen command")
+			}
+		} else {
+			fmt.Printf("Skipping, key already exists: ssh_host_rsa_key\n")
+		}
+
+		if !util.IsFile(wwkeydir + "ssh_host_dsa_key") {
+			fmt.Printf("Setting up key: ssh_host_dsa_key\n")
+			err = util.ExecInteractive("ssh-keygen", "-q", "-t", "dsa", "-f", wwkeydir+"ssh_host_dsa_key", "-C", "", "-N", "")
+			if err != nil {
+				return errors.Wrap(err, "failed to exec ssh-keygen command")
+			}
+		} else {
+			fmt.Printf("Skipping, key already exists: ssh_host_dsa_key\n")
+		}
+
+		if !util.IsFile(wwkeydir + "ssh_host_ecdsa_key") {
+			fmt.Printf("Setting up key: ssh_host_ecdsa_key\n")
+			err = util.ExecInteractive("ssh-keygen", "-q", "-t", "ecdsa", "-f", wwkeydir+"ssh_host_ecdsa_key", "-C", "", "-N", "")
+			if err != nil {
+				return errors.Wrap(err, "failed to exec ssh-keygen command")
+			}
+		} else {
+			fmt.Printf("Skipping, key already exists: ssh_host_ecdsa_key\n")
+		}
+
+		if !util.IsFile(wwkeydir + "ssh_host_ed25519_key") {
+			fmt.Printf("Setting up key: ssh_host_ed25519_key\n")
+			err = util.ExecInteractive("ssh-keygen", "-q", "-t", "ed25519", "-f", wwkeydir+"ssh_host_ed25519_key", "-C", "", "-N", "")
+			if err != nil {
+				return errors.Wrap(err, "failed to exec ssh-keygen command")
+			}
+		} else {
+			fmt.Printf("Skipping, key already exists: ssh_host_ed25519_key\n")
+		}
+	} else {
+		fmt.Printf("Updating user's keys\n")
+	}
+
+	homeDir, err := os.UserHomeDir()
+	if err != nil {
+		wwlog.Printf(wwlog.ERROR, "Could not obtain the user's home directory: %s\n", err)
+		os.Exit(1)
+	}
+
+	authorizedKeys := path.Join(homeDir, "/.ssh/authorized_keys")
+	rsaPriv := path.Join(homeDir, "/.ssh/id_rsa")
+	rsaPub := path.Join(homeDir, "/.ssh/id_rsa.pub")
+
+	if !util.IsFile(authorizedKeys) {
+		fmt.Printf("Setting up: %s\n", authorizedKeys)
+		err = util.ExecInteractive("ssh-keygen", "-q", "-t", "rsa", "-f", rsaPriv, "-C", "", "-N", "")
+		if err != nil {
+			return errors.Wrap(err, "failed to exec ssh-keygen command")
+		}
+		err := util.CopyFile(rsaPub, authorizedKeys)
+		if err != nil {
+			return errors.Wrap(err, "failed to copy keys")
+		}
+	} else {
+		fmt.Printf("Skipping, authorized_keys already exists: %s\n", authorizedKeys)
+	}
+
+	return nil
 }