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revokeuser.go
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revokeuser.go
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/*
* Copyright 2018-2022 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 (
"fmt"
"strings"
"time"
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 createRevokeUserCmd() *cobra.Command {
var params RevokeUserParams
cmd := &cobra.Command{
Use: "add-user",
Aliases: []string{"add_user"},
Short: "Revoke a user",
Args: MaxArgs(0),
SilenceUsage: true,
RunE: func(cmd *cobra.Command, args []string) error {
return RunAction(cmd, args, ¶ms)
},
}
cmd.Flags().StringVarP(¶ms.user, "name", "n", "", "user name")
cmd.Flags().VarP(¶ms.at, "at", "", "revokes all user credentials created"+
" or edited before a Unix timestamp ('0' is treated as now, accepted formats are RFC3339 or #seconds since epoch)")
params.userKey.BindFlags("user-public-key", "u", nkeys.PrefixByteUser, cmd)
params.AccountContextParams.BindFlags(cmd)
return cmd
}
func init() {
revokeCmd.AddCommand(createRevokeUserCmd())
}
// RevokeUserParams hold the info necessary to add a user to the revocation list in an account
type RevokeUserParams struct {
AccountContextParams
at dateTime
user string
userKey PubKeyParams
claim *jwt.AccountClaims
SignerParams
}
func (p *RevokeUserParams) SetDefaults(ctx ActionCtx) error {
if p.userKey.publicKey != "" && p.user != "" {
return fmt.Errorf("user and user-public-key are mutually exclusive")
}
p.userKey.AllowWildcard = true
p.AccountContextParams.SetDefaults(ctx)
if err := p.userKey.SetDefaults(ctx); err != nil {
return err
}
p.SignerParams.SetDefaults(nkeys.PrefixByteOperator, true, ctx)
return nil
}
func (p *RevokeUserParams) PreInteractive(ctx ActionCtx) error {
return p.AccountContextParams.Edit(ctx)
}
func (p *RevokeUserParams) Load(ctx ActionCtx) error {
var err error
if err = p.AccountContextParams.Validate(ctx); err != nil {
return err
}
if p.user != "" {
entries, err := ListUsers(ctx.StoreCtx().Store, p.AccountContextParams.Name)
if err != nil {
return err
}
n := strings.ToLower(p.user)
for _, e := range entries {
if e.Err == nil && strings.ToLower(e.Name) == n {
p.userKey.publicKey = e.Claims.Claims().Subject
break
}
}
if p.userKey.publicKey == "" {
return fmt.Errorf("user %q not found", p.user)
}
} else if p.user == "" && p.userKey.publicKey == "" && !InteractiveFlag {
uc, err := ctx.StoreCtx().DefaultUserClaim(p.AccountContextParams.Name)
if err != nil {
return err
}
p.userKey.publicKey = uc.Subject
}
p.claim, err = ctx.StoreCtx().Store.ReadAccountClaim(p.AccountContextParams.Name)
return err
}
func buildUserPublicKeyChoices(accountName string, ctx ActionCtx) ([]PubKeyChoice, error) {
var choices []PubKeyChoice
keyToName := map[string]string{}
keyToName[jwt.All] = "All Users"
infos, err := ListUsers(ctx.StoreCtx().Store, accountName)
if err != nil {
return nil, err
}
for _, i := range infos {
if i.Err == nil {
pkc := PubKeyChoice{}
pkc.Key = i.Claims.Claims().Subject
pkc.Label = i.Name
choices = append(choices, pkc)
}
}
return choices, nil
}
func (p *RevokeUserParams) PostInteractive(ctx ActionCtx) error {
choices, err := buildUserPublicKeyChoices(p.AccountContextParams.Name, ctx)
byName := false
if len(choices) > 0 {
byName, err = cli.Confirm("Revoke a user by name", true)
if err != nil {
return err
}
}
if byName {
if err != nil || len(choices) == 0 {
return err
}
if err := p.userKey.Select("Select revoked user to clear", choices...); err != nil {
return err
}
} else if err := p.userKey.Edit(); err != nil {
return err
}
if p.at == 0 {
if _, err := cli.Prompt("revoke all credentials created before (0 is now, formats are RFC3339 or #seconds since epoch)",
fmt.Sprintf("%d", p.at), cli.Val(p.at.Set)); err != nil {
return err
}
}
if err := p.SignerParams.Edit(ctx); err != nil {
return err
}
return nil
}
func (p *RevokeUserParams) Validate(ctx ActionCtx) error {
if p.userKey.publicKey == "" && p.user == "" {
return fmt.Errorf("user or user-public-key is required")
}
if err := p.userKey.Valid(); err != nil {
return err
}
return p.SignerParams.Resolve(ctx)
}
func (p *RevokeUserParams) Run(ctx ActionCtx) (store.Status, error) {
if p.at == 0 {
p.claim.Revoke(p.userKey.publicKey)
} else {
p.claim.RevokeAt(p.userKey.publicKey, time.Unix(int64(p.at), 0))
}
token, err := p.claim.Encode(p.signerKP)
if err != nil {
return nil, err
}
r := store.NewDetailedReport(true)
StoreAccountAndUpdateStatus(ctx, token, r)
if r.HasNoErrors() {
if p.userKey.publicKey == jwt.All {
when := int64(p.at)
if when == 0 {
when = time.Now().Unix()
}
r.AddOK("revoked all users issued before %s", time.Unix(when, 0).String())
} else {
r.AddOK("revoked user %q", p.userKey.publicKey)
}
}
return r, nil
}