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addaccount.go
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addaccount.go
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/*
*
* * Copyright 2018-2019 The NATS Authors
* * Licensed under the Apache License, Version 2.0 (the "License");
* * you may not use this file except in compliance with the License.
* * You may obtain a copy of the License at
* *
* * http://www.apache.org/licenses/LICENSE-2.0
* *
* * Unless required by applicable law or agreed to in writing, software
* * distributed under the License is distributed on an "AS IS" BASIS,
* * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* * See the License for the specific language governing permissions and
* * limitations under the License.
*
*/
package cmd
import (
"errors"
"fmt"
"strings"
cli "github.com/nats-io/cliprompts/v2"
"github.com/nats-io/jwt/v2"
"github.com/nats-io/nkeys"
"github.com/nats-io/nsc/v2/cmd/store"
"github.com/spf13/cobra"
)
func CreateAddAccountCmd() *cobra.Command {
var params AddAccountParams
cmd := &cobra.Command{
Use: "account",
Short: "Add an account",
Args: cobra.MaximumNArgs(1),
SilenceUsage: true,
RunE: func(cmd *cobra.Command, args []string) error {
if err := RunAction(cmd, args, ¶ms); err != nil {
return err
}
return GetConfig().SetAccount(params.name)
},
}
cmd.Flags().StringVarP(¶ms.name, "name", "n", "", "account name")
cmd.Flags().StringVarP(¶ms.keyPath, "public-key", "k", "", "public key identifying the account")
params.TimeParams.BindFlags(cmd)
params.PermissionsParams.bindSetFlags(cmd, "default permissions")
return cmd
}
func init() {
addCmd.AddCommand(CreateAddAccountCmd())
}
type AddAccountParams struct {
SignerParams
TimeParams
PermissionsParams
token string
name string
generate bool
keyPath string
akp nkeys.KeyPair
}
func (p *AddAccountParams) SetDefaults(ctx ActionCtx) error {
p.name = NameFlagOrArgument(p.name, ctx)
if p.name == "*" {
p.name = GetRandomName(0)
}
p.generate = p.keyPath == ""
p.SignerParams.SetDefaults(nkeys.PrefixByteOperator, true, ctx)
return nil
}
func (p *AddAccountParams) resolveAccountNKey(s string) (nkeys.KeyPair, error) {
nk, err := store.ResolveKey(s)
if err != nil {
return nil, err
}
if nk == nil {
return nil, fmt.Errorf("a key is required")
}
t, err := store.KeyType(nk)
if err != nil {
return nil, err
}
if t != nkeys.PrefixByteAccount {
return nil, errors.New("specified key is not a valid account nkey")
}
return nk, nil
}
func (p *AddAccountParams) validateAccountNKey(s string) error {
_, err := p.resolveAccountNKey(s)
return err
}
func (p *AddAccountParams) PreInteractive(ctx ActionCtx) error {
var err error
p.name, err = cli.Prompt("account name", p.name, cli.NewLengthValidator(1))
if err != nil {
return err
}
p.generate, err = cli.Confirm("generate an account nkey", true)
if err != nil {
return err
}
if !p.generate {
p.keyPath, err = cli.Prompt("path to an account nkey or nkey", p.keyPath, cli.Val(p.validateAccountNKey))
if err != nil {
return err
}
}
if err = p.TimeParams.Edit(); err != nil {
return err
}
return nil
}
func (p *AddAccountParams) Load(ctx ActionCtx) error {
var err error
if p.generate {
p.akp, err = nkeys.CreateAccount()
if err != nil {
return err
}
if p.keyPath, err = ctx.StoreCtx().KeyStore.Store(p.akp); err != nil {
return err
}
} else {
p.akp, err = p.resolveAccountNKey(p.keyPath)
if err != nil {
return err
}
}
return nil
}
func (p *AddAccountParams) validSigners(ctx ActionCtx) ([]string, error) {
oc, err := ctx.StoreCtx().Store.ReadOperatorClaim()
if err != nil {
return nil, err
}
var signers []string
if !oc.StrictSigningKeyUsage {
signers = append(signers, oc.Subject)
}
signers = append(signers, oc.SigningKeys...)
if ctx.StoreCtx().Store.IsManaged() && p.akp != nil {
pk, err := p.akp.PublicKey()
if err != nil {
return nil, err
}
signers = append(signers, pk)
}
return signers, nil
}
func (p *AddAccountParams) PostInteractive(ctx ActionCtx) error {
signers, err := p.validSigners(ctx)
if err != nil {
return err
}
p.SignerParams.SetPrompt("select the key to sign the account")
return p.SignerParams.SelectFromSigners(ctx, signers)
}
func (p *AddAccountParams) Validate(ctx ActionCtx) error {
var err error
if p.name == "" {
return fmt.Errorf("account name is required")
}
if strings.ContainsAny(p.name, "/\\") {
ctx.CurrentCmd().SilenceUsage = false
return fmt.Errorf("name cannot contain '/' or '\\'")
}
if p.name == "*" {
p.name = GetRandomName(0)
}
names, err := GetConfig().ListAccounts()
if err != nil {
return err
}
found := false
lcn := strings.ToLower(p.name)
for _, v := range names {
if lcn == strings.ToLower(v) {
found = true
break
}
}
if found {
return fmt.Errorf("the account %q already exists", p.name)
}
if p.akp == nil {
return errors.New("path to an account nkey or nkey is required - specify --public-key")
}
kt, err := store.KeyType(p.akp)
if err != nil {
return err
}
if kt != nkeys.PrefixByteAccount {
return errors.New("invalid account key")
}
if err = p.TimeParams.Validate(); err != nil {
return err
}
if err := p.PermissionsParams.Validate(); err != nil {
return err
}
// the account doesn't exist, so insure self signed works
p.SignerParams.ForceManagedAccountKey(ctx, p.akp)
if err := p.SignerParams.Resolve(ctx); err != nil {
return err
}
signers, err := p.validSigners(ctx)
if err != nil {
return err
}
ok, err := ValidSigner(p.SignerParams.signerKP, signers)
if err != nil {
return err
}
if !ok {
return errors.New("invalid account signer")
}
return nil
}
func (p *AddAccountParams) Run(ctx ActionCtx) (store.Status, error) {
var err error
pk, err := p.akp.PublicKey()
if err != nil {
return nil, err
}
r := store.NewDetailedReport(false)
ac := jwt.NewAccountClaims(pk)
ac.Name = p.name
if p.TimeParams.IsStartChanged() {
ac.NotBefore, _ = p.TimeParams.StartDate()
}
if p.TimeParams.IsExpiryChanged() {
ac.Expires, _ = p.TimeParams.ExpiryDate()
}
if s, err := p.PermissionsParams.Run(&ac.DefaultPermissions, ctx); err != nil {
return nil, err
} else if s != nil {
r.Add(s.Details...)
}
signer := p.akp
if !ctx.StoreCtx().Store.IsManaged() || p.signerKP != nil {
signer = p.signerKP
}
p.token, err = ac.Encode(signer)
if err != nil {
return nil, err
}
if p.generate {
r.AddOK("generated and stored account key %q", pk)
}
StoreAccountAndUpdateStatus(ctx, p.token, r)
if r.HasNoErrors() {
r.AddOK("added account %q", p.name)
}
return r, err
}