mirror of
https://github.com/danderson/netboot.git
synced 2025-08-09 08:07:11 +02:00
113 lines
3.1 KiB
Go
113 lines
3.1 KiB
Go
// Copyright 2016 Google Inc.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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// Package cli implements the commandline interface for Pixiecore.
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package cli
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import (
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"fmt"
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"io/ioutil"
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"os"
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"github.com/spf13/cobra"
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"github.com/spf13/viper"
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"go.universe.tf/netboot/pixiecore"
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)
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// Ipxe is the set of ipxe binaries for supported firmwares.
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//
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// Can be set externally before calling CLI(), and set/extended by
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// commandline processing in CLI().
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var Ipxe = map[pixiecore.Firmware][]byte{}
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// CLI runs the Pixiecore commandline.
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func CLI() {
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// The ipxe firmware flags need to be set outside init(), so that
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// the default flag value is computed appropriately based on
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// whether the caller preseeded Ipxe.
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rootCmd.PersistentFlags().Var(ipxeFirmwareFlag(pixiecore.FirmwareX86PC), "ipxe-bios", "iPXE binary for BIOS/UNDI")
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rootCmd.PersistentFlags().Var(ipxeFirmwareFlag(pixiecore.FirmwareEFI32), "ipxe-efi32", "iPXE binary for 32-bit UEFI")
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rootCmd.PersistentFlags().Var(ipxeFirmwareFlag(pixiecore.FirmwareEFI64), "ipxe-efi64", "iPXE binary for 64-bit UEFI")
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if v1compatCLI() {
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return
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}
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if err := rootCmd.Execute(); err != nil {
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fmt.Println(err)
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os.Exit(-1)
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}
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}
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// This represents the base command when called without any subcommands
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var rootCmd = &cobra.Command{
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Use: "pixiecore",
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Short: "All-in-one network booting",
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Long: `Pixiecore is a tool to make network booting easy.`,
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}
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type ipxeFirmwareFlag pixiecore.Firmware
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func (iff ipxeFirmwareFlag) String() string {
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if Ipxe[pixiecore.Firmware(iff)] != nil {
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return "<builtin>"
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}
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return ""
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}
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func (iff ipxeFirmwareFlag) Set(v string) error {
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bs, err := ioutil.ReadFile(v)
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if err != nil {
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return fmt.Errorf("couldn't read ipxe binary %q: %s", v, err)
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}
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Ipxe[pixiecore.Firmware(iff)] = bs
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return nil
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}
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func (ipxeFirmwareFlag) Type() string {
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return "filename"
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}
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var cfgFile string
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func init() {
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cobra.OnInitialize(initConfig)
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rootCmd.PersistentFlags().StringVar(&cfgFile, "config", "", "config file")
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}
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func initConfig() {
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if cfgFile != "" { // enable ability to specify config file via flag
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viper.SetConfigFile(cfgFile)
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if err := viper.ReadInConfig(); err != nil {
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fmt.Printf("Error reading configuration file %q: %s\n", viper.ConfigFileUsed(), err)
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os.Exit(1)
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}
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fmt.Println("Using config file:", viper.ConfigFileUsed())
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}
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viper.SetEnvPrefix("pixiecore")
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viper.AutomaticEnv() // read in environment variables that match
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}
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func fatalf(msg string, args ...interface{}) {
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fmt.Printf(msg+"\n", args...)
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os.Exit(1)
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}
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func todo(msg string, args ...interface{}) {
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fatalf("TODO: "+msg, args...)
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}
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