package cli

/*
	Sliver Implant Framework
	Copyright (C) 2019  Bishop Fox

	This program is free software: you can redistribute it and/or modify
	it under the terms of the GNU General Public License as published by
	the Free Software Foundation, either version 3 of the License, or
	(at your option) any later version.

	This program is distributed in the hope that it will be useful,
	but WITHOUT ANY WARRANTY; without even the implied warranty of
	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
	GNU General Public License for more details.

	You should have received a copy of the GNU General Public License
	along with this program.  If not, see <https://www.gnu.org/licenses/>.
*/

import (
	"fmt"
	"os"
	"path/filepath"

	"github.com/bishopfox/sliver/server/certs"
	"github.com/bishopfox/sliver/server/console"
	"github.com/spf13/cobra"
)

const (
	outputFile   = "file"
	outputStdout = "stdout"
)

var operatorCmd = &cobra.Command{
	Use:   "operator",
	Short: "Generate operator configuration files",
	Long:  ``,
	Run: func(cmd *cobra.Command, args []string) {
		name, err := cmd.Flags().GetString(nameFlagStr)
		if err != nil {
			fmt.Printf("Failed to parse --%s flag %s", nameFlagStr, err)
			return
		}
		if name == "" {
			fmt.Printf("Must specify --%s", nameFlagStr)
			return
		}

		lhost, err := cmd.Flags().GetString(lhostFlagStr)
		if err != nil {
			fmt.Printf("Failed to parse --%s flag %s", lhostFlagStr, err)
			return
		}
		if lhost == "" {
			fmt.Printf("Must specify --%s", lhostFlagStr)
			return
		}

		lport, err := cmd.Flags().GetUint16(lportFlagStr)
		if err != nil {
			fmt.Printf("Failed to parse --%s flag %s", lportFlagStr, err)
			return
		}

		save, err := cmd.Flags().GetString(saveFlagStr)
		if err != nil {
			fmt.Printf("Failed to parse --%s flag %s", saveFlagStr, err)
			return
		}
		if save == "" {
			save, _ = os.Getwd()
		}

		output, err := cmd.Flags().GetString(outputFlagStr)
		if err != nil {
			fmt.Printf("Failed to parse --%s flag %s", outputFlagStr, err)
			return
		}

		permissions, err := cmd.Flags().GetStringSlice(permissionsFlagStr)
		if err != nil {
			fmt.Printf("Failed to parse --%s flag %s", permissionsFlagStr, err)
			return
		}
		if len(permissions) == 0 {
			fmt.Printf("Must specify --%s", permissionsFlagStr)
			return
		}

		certs.SetupCAs()
		configJSON, err := console.NewOperatorConfig(name, lhost, lport, permissions)
		if err != nil {
			fmt.Printf("Failed: %s\n", err)
			return
		}

		switch output {
		case outputFile:
			saveTo, _ := filepath.Abs(save)
			fi, err := os.Stat(saveTo)
			if !os.IsNotExist(err) && !fi.IsDir() {
				fmt.Printf("File already exists: %s\n", err)
				return
			}
			if !os.IsNotExist(err) && fi.IsDir() {
				filename := fmt.Sprintf("%s_%s.cfg", filepath.Base(name), filepath.Base(lhost))
				saveTo = filepath.Join(saveTo, filename)
			}
			err = os.WriteFile(saveTo, configJSON, 0600)
			if err != nil {
				fmt.Printf("Write failed: %s (%s)\n", saveTo, err)
				return
			}
		case outputStdout:
			fmt.Println(string(configJSON))
		}
	},
}