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http.go
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http.go
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// Copyright 2015-present, Cyrill @ Schumacher.fm and the CoreStore contributors
//
// 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 signed
import "net/http"
// Content* constants are used as HTTP header key names.
const (
HeaderContentSignature = "Content-Signature"
HeaderContentHMAC = "Content-Hmac"
)
// EncodeFn encodes a raw signature byte slice to a string. Useful types are
// hex.EncodeToString or base64.StdEncoding.EncodeToString.
type EncodeFn func(src []byte) string
// DecodeFn decodes a raw signature from the header to a byte slice. Useful
// types are hex.DecodeString or base64.StdEncoding.DecodeString.
type DecodeFn func(s string) ([]byte, error)
// HeaderParseWriter knows how to read and write the HTTP header in regards to
// the hash.
type HeaderParseWriter interface {
HeaderKey() string
// Write writes a signature to the HTTP response header.
Write(w http.ResponseWriter, signature []byte)
// Parse parses from a request the necessary data to find the signature hash
// and returns the raw signatures byte slice for further validation.
Parse(r *http.Request) (signature []byte, err error)
}