open-vault/command/operator_generate_root.go

570 lines
15 KiB
Go

// Copyright (c) HashiCorp, Inc.
// SPDX-License-Identifier: MPL-2.0
package command
import (
"bytes"
"fmt"
"io"
"os"
"strings"
"github.com/hashicorp/go-secure-stdlib/password"
"github.com/hashicorp/vault/api"
"github.com/hashicorp/vault/helper/pgpkeys"
"github.com/hashicorp/vault/sdk/helper/roottoken"
"github.com/mitchellh/cli"
"github.com/posener/complete"
)
var (
_ cli.Command = (*OperatorGenerateRootCommand)(nil)
_ cli.CommandAutocomplete = (*OperatorGenerateRootCommand)(nil)
)
type generateRootKind int
const (
generateRootRegular generateRootKind = iota
generateRootDR
generateRootRecovery
)
type OperatorGenerateRootCommand struct {
*BaseCommand
flagInit bool
flagCancel bool
flagStatus bool
flagDecode string
flagOTP string
flagPGPKey string
flagNonce string
flagGenerateOTP bool
flagDRToken bool
flagRecoveryToken bool
testStdin io.Reader // for tests
}
func (c *OperatorGenerateRootCommand) Synopsis() string {
return "Generates a new root token"
}
func (c *OperatorGenerateRootCommand) Help() string {
helpText := `
Usage: vault operator generate-root [options] [KEY]
Generates a new root token by combining a quorum of share holders. One of
the following must be provided to start the root token generation:
- A base64-encoded one-time-password (OTP) provided via the "-otp" flag.
Use the "-generate-otp" flag to generate a usable value. The resulting
token is XORed with this value when it is returned. Use the "-decode"
flag to output the final value.
- A file containing a PGP key or a keybase username in the "-pgp-key"
flag. The resulting token is encrypted with this public key.
An unseal key may be provided directly on the command line as an argument to
the command. If key is specified as "-", the command will read from stdin. If
a TTY is available, the command will prompt for text.
Generate an OTP code for the final token:
$ vault operator generate-root -generate-otp
Start a root token generation:
$ vault operator generate-root -init -otp="..."
$ vault operator generate-root -init -pgp-key="..."
Enter an unseal key to progress root token generation:
$ vault operator generate-root -otp="..."
` + c.Flags().Help()
return strings.TrimSpace(helpText)
}
func (c *OperatorGenerateRootCommand) Flags() *FlagSets {
set := c.flagSet(FlagSetHTTP | FlagSetOutputFormat)
f := set.NewFlagSet("Command Options")
f.BoolVar(&BoolVar{
Name: "init",
Target: &c.flagInit,
Default: false,
EnvVar: "",
Completion: complete.PredictNothing,
Usage: "Start a root token generation. This can only be done if " +
"there is not currently one in progress.",
})
f.BoolVar(&BoolVar{
Name: "cancel",
Target: &c.flagCancel,
Default: false,
EnvVar: "",
Completion: complete.PredictNothing,
Usage: "Reset the root token generation progress. This will discard any " +
"submitted unseal keys or configuration.",
})
f.BoolVar(&BoolVar{
Name: "status",
Target: &c.flagStatus,
Default: false,
EnvVar: "",
Completion: complete.PredictNothing,
Usage: "Print the status of the current attempt without providing an " +
"unseal key.",
})
f.StringVar(&StringVar{
Name: "decode",
Target: &c.flagDecode,
Default: "",
EnvVar: "",
Completion: complete.PredictAnything,
Usage: "The value to decode; setting this triggers a decode operation. " +
" If the value is \"-\" then read the encoded token from stdin.",
})
f.BoolVar(&BoolVar{
Name: "generate-otp",
Target: &c.flagGenerateOTP,
Default: false,
EnvVar: "",
Completion: complete.PredictNothing,
Usage: "Generate and print a high-entropy one-time-password (OTP) " +
"suitable for use with the \"-init\" flag.",
})
f.BoolVar(&BoolVar{
Name: "dr-token",
Target: &c.flagDRToken,
Default: false,
EnvVar: "",
Completion: complete.PredictNothing,
Usage: "Set this flag to do generate root operations on DR Operational " +
"tokens.",
})
f.BoolVar(&BoolVar{
Name: "recovery-token",
Target: &c.flagRecoveryToken,
Default: false,
EnvVar: "",
Completion: complete.PredictNothing,
Usage: "Set this flag to do generate root operations on Recovery Operational " +
"tokens.",
})
f.StringVar(&StringVar{
Name: "otp",
Target: &c.flagOTP,
Default: "",
EnvVar: "",
Completion: complete.PredictAnything,
Usage: "OTP code to use with \"-decode\" or \"-init\".",
})
f.VarFlag(&VarFlag{
Name: "pgp-key",
Value: (*pgpkeys.PubKeyFileFlag)(&c.flagPGPKey),
Default: "",
EnvVar: "",
Completion: complete.PredictAnything,
Usage: "Path to a file on disk containing a binary or base64-encoded " +
"public PGP key. This can also be specified as a Keybase username " +
"using the format \"keybase:<username>\". When supplied, the generated " +
"root token will be encrypted and base64-encoded with the given public " +
"key.",
})
f.StringVar(&StringVar{
Name: "nonce",
Target: &c.flagNonce,
Default: "",
EnvVar: "",
Completion: complete.PredictAnything,
Usage: "Nonce value provided at initialization. The same nonce value " +
"must be provided with each unseal key.",
})
return set
}
func (c *OperatorGenerateRootCommand) AutocompleteArgs() complete.Predictor {
return nil
}
func (c *OperatorGenerateRootCommand) AutocompleteFlags() complete.Flags {
return c.Flags().Completions()
}
func (c *OperatorGenerateRootCommand) Run(args []string) int {
f := c.Flags()
if err := f.Parse(args); err != nil {
c.UI.Error(err.Error())
return 1
}
args = f.Args()
if len(args) > 1 {
c.UI.Error(fmt.Sprintf("Too many arguments (expected 0-1, got %d)", len(args)))
return 1
}
if c.flagDRToken && c.flagRecoveryToken {
c.UI.Error("Both -recovery-token and -dr-token flags are set")
return 1
}
client, err := c.Client()
if err != nil {
c.UI.Error(err.Error())
return 2
}
kind := generateRootRegular
switch {
case c.flagDRToken:
kind = generateRootDR
case c.flagRecoveryToken:
kind = generateRootRecovery
}
switch {
case c.flagGenerateOTP:
otp, code := c.generateOTP(client, kind)
if code == 0 {
switch Format(c.UI) {
case "", "table":
return PrintRaw(c.UI, otp)
default:
status := map[string]interface{}{
"otp": otp,
"otp_length": len(otp),
}
return OutputData(c.UI, status)
}
}
return code
case c.flagDecode != "":
return c.decode(client, c.flagDecode, c.flagOTP, kind)
case c.flagCancel:
return c.cancel(client, kind)
case c.flagInit:
return c.init(client, c.flagOTP, c.flagPGPKey, kind)
case c.flagStatus:
return c.status(client, kind)
default:
// If there are no other flags, prompt for an unseal key.
key := ""
if len(args) > 0 {
key = strings.TrimSpace(args[0])
}
return c.provide(client, key, kind)
}
}
// generateOTP generates a suitable OTP code for generating a root token.
func (c *OperatorGenerateRootCommand) generateOTP(client *api.Client, kind generateRootKind) (string, int) {
f := client.Sys().GenerateRootStatus
switch kind {
case generateRootDR:
f = client.Sys().GenerateDROperationTokenStatus
case generateRootRecovery:
f = client.Sys().GenerateRecoveryOperationTokenStatus
}
status, err := f()
if err != nil {
c.UI.Error(fmt.Sprintf("Error getting root generation status: %s", err))
return "", 2
}
otp, err := roottoken.GenerateOTP(status.OTPLength)
var retCode int
if err != nil {
retCode = 2
c.UI.Error(err.Error())
} else {
retCode = 0
}
return otp, retCode
}
// decode decodes the given value using the otp.
func (c *OperatorGenerateRootCommand) decode(client *api.Client, encoded, otp string, kind generateRootKind) int {
if encoded == "" {
c.UI.Error("Missing encoded value: use -decode=<string> to supply it")
return 1
}
if otp == "" {
c.UI.Error("Missing otp: use -otp to supply it")
return 1
}
if encoded == "-" {
// Pull our fake stdin if needed
stdin := (io.Reader)(os.Stdin)
if c.testStdin != nil {
stdin = c.testStdin
}
var buf bytes.Buffer
if _, err := io.Copy(&buf, stdin); err != nil {
c.UI.Error(fmt.Sprintf("Failed to read from stdin: %s", err))
return 1
}
encoded = buf.String()
if encoded == "" {
c.UI.Error("Missing encoded value. When using -decode=\"-\" value must be passed via stdin.")
return 1
}
}
f := client.Sys().GenerateRootStatus
switch kind {
case generateRootDR:
f = client.Sys().GenerateDROperationTokenStatus
case generateRootRecovery:
f = client.Sys().GenerateRecoveryOperationTokenStatus
}
status, err := f()
if err != nil {
c.UI.Error(fmt.Sprintf("Error getting root generation status: %s", err))
return 2
}
token, err := roottoken.DecodeToken(encoded, otp, status.OTPLength)
if err != nil {
c.UI.Error(fmt.Sprintf("Error decoding root token: %s", err))
return 1
}
switch Format(c.UI) {
case "", "table":
return PrintRaw(c.UI, token)
default:
tokenJSON := map[string]interface{}{
"token": token,
}
return OutputData(c.UI, tokenJSON)
}
}
// init is used to start the generation process
func (c *OperatorGenerateRootCommand) init(client *api.Client, otp, pgpKey string, kind generateRootKind) int {
// Validate incoming fields. Either OTP OR PGP keys must be supplied.
if otp != "" && pgpKey != "" {
c.UI.Error("Error initializing: cannot specify both -otp and -pgp-key")
return 1
}
// Start the root generation
f := client.Sys().GenerateRootInit
switch kind {
case generateRootDR:
f = client.Sys().GenerateDROperationTokenInit
case generateRootRecovery:
f = client.Sys().GenerateRecoveryOperationTokenInit
}
status, err := f(otp, pgpKey)
if err != nil {
c.UI.Error(fmt.Sprintf("Error initializing root generation: %s", err))
return 2
}
switch Format(c.UI) {
case "table":
return c.printStatus(status)
default:
return OutputData(c.UI, status)
}
}
// provide prompts the user for the seal key and posts it to the update root
// endpoint. If this is the last unseal, this function outputs it.
func (c *OperatorGenerateRootCommand) provide(client *api.Client, key string, kind generateRootKind) int {
f := client.Sys().GenerateRootStatus
switch kind {
case generateRootDR:
f = client.Sys().GenerateDROperationTokenStatus
case generateRootRecovery:
f = client.Sys().GenerateRecoveryOperationTokenStatus
}
status, err := f()
if err != nil {
c.UI.Error(fmt.Sprintf("Error getting root generation status: %s", err))
return 2
}
// Verify a root token generation is in progress. If there is not one in
// progress, return an error instructing the user to start one.
if !status.Started {
c.UI.Error(wrapAtLength(
"No root generation is in progress. Start a root generation by " +
"running \"vault operator generate-root -init\"."))
c.UI.Warn(wrapAtLength(fmt.Sprintf(
"If starting root generation using the OTP method and generating "+
"your own OTP, the length of the OTP string needs to be %d "+
"characters in length.", status.OTPLength)))
return 1
}
var nonce string
switch key {
case "-": // Read from stdin
nonce = c.flagNonce
// Pull our fake stdin if needed
stdin := (io.Reader)(os.Stdin)
if c.testStdin != nil {
stdin = c.testStdin
}
var buf bytes.Buffer
if _, err := io.Copy(&buf, stdin); err != nil {
c.UI.Error(fmt.Sprintf("Failed to read from stdin: %s", err))
return 1
}
key = buf.String()
case "": // Prompt using the tty
// Nonce value is not required if we are prompting via the terminal
nonce = status.Nonce
w := getWriterFromUI(c.UI)
fmt.Fprintf(w, "Operation nonce: %s\n", nonce)
fmt.Fprintf(w, "Unseal Key (will be hidden): ")
key, err = password.Read(os.Stdin)
fmt.Fprintf(w, "\n")
if err != nil {
if err == password.ErrInterrupted {
c.UI.Error("user canceled")
return 1
}
c.UI.Error(wrapAtLength(fmt.Sprintf("An error occurred attempting to "+
"ask for the unseal key. The raw error message is shown below, but "+
"usually this is because you attempted to pipe a value into the "+
"command or you are executing outside of a terminal (tty). If you "+
"want to pipe the value, pass \"-\" as the argument to read from "+
"stdin. The raw error was: %s", err)))
return 1
}
default: // Supplied directly as an arg
nonce = c.flagNonce
}
// Trim any whitespace from they key, especially since we might have prompted
// the user for it.
key = strings.TrimSpace(key)
// Verify we have a nonce value
if nonce == "" {
c.UI.Error("Missing nonce value: specify it via the -nonce flag")
return 1
}
// Provide the key, this may potentially complete the update
fUpd := client.Sys().GenerateRootUpdate
switch kind {
case generateRootDR:
fUpd = client.Sys().GenerateDROperationTokenUpdate
case generateRootRecovery:
fUpd = client.Sys().GenerateRecoveryOperationTokenUpdate
}
status, err = fUpd(key, nonce)
if err != nil {
c.UI.Error(fmt.Sprintf("Error posting unseal key: %s", err))
return 2
}
switch Format(c.UI) {
case "table":
return c.printStatus(status)
default:
return OutputData(c.UI, status)
}
}
// cancel cancels the root token generation
func (c *OperatorGenerateRootCommand) cancel(client *api.Client, kind generateRootKind) int {
f := client.Sys().GenerateRootCancel
switch kind {
case generateRootDR:
f = client.Sys().GenerateDROperationTokenCancel
case generateRootRecovery:
f = client.Sys().GenerateRecoveryOperationTokenCancel
}
if err := f(); err != nil {
c.UI.Error(fmt.Sprintf("Error canceling root token generation: %s", err))
return 2
}
c.UI.Output("Success! Root token generation canceled (if it was started)")
return 0
}
// status is used just to fetch and dump the status
func (c *OperatorGenerateRootCommand) status(client *api.Client, kind generateRootKind) int {
f := client.Sys().GenerateRootStatus
switch kind {
case generateRootDR:
f = client.Sys().GenerateDROperationTokenStatus
case generateRootRecovery:
f = client.Sys().GenerateRecoveryOperationTokenStatus
}
status, err := f()
if err != nil {
c.UI.Error(fmt.Sprintf("Error getting root generation status: %s", err))
return 2
}
switch Format(c.UI) {
case "table":
return c.printStatus(status)
default:
return OutputData(c.UI, status)
}
}
// printStatus dumps the status to output
func (c *OperatorGenerateRootCommand) printStatus(status *api.GenerateRootStatusResponse) int {
out := []string{}
out = append(out, fmt.Sprintf("Nonce | %s", status.Nonce))
out = append(out, fmt.Sprintf("Started | %t", status.Started))
out = append(out, fmt.Sprintf("Progress | %d/%d", status.Progress, status.Required))
out = append(out, fmt.Sprintf("Complete | %t", status.Complete))
if status.PGPFingerprint != "" {
out = append(out, fmt.Sprintf("PGP Fingerprint | %s", status.PGPFingerprint))
}
switch {
case status.EncodedToken != "":
out = append(out, fmt.Sprintf("Encoded Token | %s", status.EncodedToken))
case status.EncodedRootToken != "":
out = append(out, fmt.Sprintf("Encoded Root Token | %s", status.EncodedRootToken))
}
if status.OTP != "" {
c.UI.Warn(wrapAtLength("A One-Time-Password has been generated for you and is shown in the OTP field. You will need this value to decode the resulting root token, so keep it safe."))
out = append(out, fmt.Sprintf("OTP | %s", status.OTP))
}
if status.OTPLength != 0 {
out = append(out, fmt.Sprintf("OTP Length | %d", status.OTPLength))
}
output := columnOutput(out, nil)
c.UI.Output(output)
return 0
}