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base_signed.go
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/
base_signed.go
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// Copyright 2019 Anapaya Systems
//
// 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 cert
import (
"encoding/json"
"errors"
"github.com/scionproto/scion/go/lib/common"
)
const (
// ErrInvalidCrit indicates that the value for the crit key is invalid.
ErrInvalidCrit common.ErrMsg = "invalid crit"
// ErrInvalidSignatureType indicates an invalid signature type.
ErrInvalidSignatureType common.ErrMsg = "invalid signature type"
)
var (
// ErrCritNotSet indicates that crit is not set.
ErrCritNotSet = errors.New("crit not set")
// ErrNotUTF8 indicates an invalid encoding.
ErrNotUTF8 = errors.New("not utf-8 encoded")
// ErrSignatureTypeNotSet indicates the signature type is not set.
ErrSignatureTypeNotSet = errors.New("signature type not set")
)
func checkCrit(b []byte, critFields []string) error {
var list []string
if err := json.Unmarshal(b, &list); err != nil {
return err
}
if len(list) != len(critFields) {
return common.NewBasicError(ErrInvalidCrit, nil, "len", len(list))
}
for i, expected := range critFields {
if list[i] != expected {
return common.NewBasicError(ErrInvalidCrit, nil, "idx", i,
"expected", expected, "actual", list[i])
}
}
return nil
}