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/*
* Copyright 2019 Square Inc.
*
* 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 main
import (
"flag"
"fmt"
"github.com/go-jose/go-jose/v4"
)
func expand(args []string) error {
fs := flag.NewFlagSet("expand", flag.ExitOnError)
expandFormatFlag := fs.String("format", "", "Type of message to expand (JWS or JWE, defaults to JWE)")
registerCommon(fs)
fs.Parse(args)
bytes, err := readInput(*inFile)
if err != nil {
return err
}
input := string(bytes)
var serialized string
switch *expandFormatFlag {
case "", "JWE":
var jwe *jose.JSONWebEncryption
jwe, err = jose.ParseEncrypted(input, allKeyAlgorithms, allContentEncryption)
if err == nil {
serialized = jwe.FullSerialize()
}
case "JWS":
var jws *jose.JSONWebSignature
jws, err = jose.ParseSigned(input, allSignatureAlgorithms)
if err == nil {
serialized = jws.FullSerialize()
}
}
if err != nil {
return fmt.Errorf("unable to expand message: %w", err)
}
err = writeOutput(*outFile, []byte(serialized))
if err != nil {
return err
}
return writeOutput(*outFile, []byte("\n"))
}
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