123 lines
3.4 KiB
Go
123 lines
3.4 KiB
Go
// Copyright © 2018 ehlxr <ehlxr.me@gmail.com>
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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// THE SOFTWARE.
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package token
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import (
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"encoding/json"
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"fmt"
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"os"
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"github.com/atotto/clipboard"
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"github.com/dgrijalva/jwt-go"
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"github.com/spf13/cobra"
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)
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// Create, sign, and output a token. This is a great, simple example of
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// how to use this library to create and sign a token.
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func SignToken(cmd *cobra.Command) error {
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flagData := cmd.LocalFlags().Lookup("data").Value.String()
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flagClaims := cmd.LocalFlags().Lookup("claims").Value.(ArgList)
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flagHead := cmd.LocalFlags().Lookup("header").Value.(ArgList)
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flagKey := cmd.LocalFlags().Lookup("key").Value.String()
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flagDebug := promptDebug()
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flagAlg, err := promptAlg()
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if err != nil {
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return fmt.Errorf("Prompt flagAlg failed %v\n", err)
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}
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// get the token data from command line arguments
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tokData, err := loadData(flagData)
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if err != nil {
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return fmt.Errorf("couldn't read data: %v", err)
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} else if flagDebug {
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_, _ = fmt.Fprintf(os.Stderr, "Token len: %v bytes\n", len(tokData))
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_, _ = fmt.Fprintf(os.Stderr, "Token data: %v \n", string(tokData))
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}
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// parse the JSON of the claims
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var claims jwt.MapClaims
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if err := json.Unmarshal(tokData, &claims); err != nil {
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return fmt.Errorf("couldn't parse claims JSON: %v", err)
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}
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// add command line claims
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if len(flagClaims) > 0 {
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for k, v := range flagClaims {
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claims[k] = v
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}
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}
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// get the key
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var key interface{}
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key, err = loadData(flagKey)
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if err != nil {
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return fmt.Errorf("couldn't read key: %v", err)
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}
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// get the signing alg
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alg := jwt.GetSigningMethod(flagAlg)
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if alg == nil {
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return fmt.Errorf("couldn't find signing method alg: %v", flagAlg)
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}
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// create a new token
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token := jwt.NewWithClaims(alg, claims)
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// add command line headers
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if len(flagHead) > 0 {
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for k, v := range flagHead {
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token.Header[k] = v
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}
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}
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if isEs(flagAlg) {
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if k, ok := key.([]byte); !ok {
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return fmt.Errorf("couldn't convert key data to key")
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} else {
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key, err = jwt.ParseECPrivateKeyFromPEM(k)
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if err != nil {
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return err
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}
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}
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} else if isRs(flagAlg) {
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if k, ok := key.([]byte); !ok {
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return fmt.Errorf("couldn't convert key data to key")
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} else {
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key, err = jwt.ParseRSAPrivateKeyFromPEM(k)
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if err != nil {
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return err
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}
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}
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}
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if out, err := token.SignedString(key); err == nil {
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fmt.Println(out)
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_ = clipboard.WriteAll(out)
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} else {
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return fmt.Errorf("error signing token: %v", err)
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}
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return nil
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}
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