mirror of
https://github.com/superseriousbusiness/gotosocial.git
synced 2024-12-24 11:12:11 +00:00
63 lines
1.8 KiB
Go
63 lines
1.8 KiB
Go
/*
|
|
* MinIO Go Library for Amazon S3 Compatible Cloud Storage
|
|
* Copyright 2015-2017 MinIO, 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 signer
|
|
|
|
import (
|
|
"crypto/hmac"
|
|
"crypto/sha256"
|
|
"net/http"
|
|
"strings"
|
|
)
|
|
|
|
// unsignedPayload - value to be set to X-Amz-Content-Sha256 header when
|
|
const unsignedPayload = "UNSIGNED-PAYLOAD"
|
|
|
|
// sum256 calculate sha256 sum for an input byte array.
|
|
func sum256(data []byte) []byte {
|
|
hash := sha256.New()
|
|
hash.Write(data)
|
|
return hash.Sum(nil)
|
|
}
|
|
|
|
// sumHMAC calculate hmac between two input byte array.
|
|
func sumHMAC(key, data []byte) []byte {
|
|
hash := hmac.New(sha256.New, key)
|
|
hash.Write(data)
|
|
return hash.Sum(nil)
|
|
}
|
|
|
|
// getHostAddr returns host header if available, otherwise returns host from URL
|
|
func getHostAddr(req *http.Request) string {
|
|
host := req.Header.Get("host")
|
|
if host != "" && req.Host != host {
|
|
return host
|
|
}
|
|
if req.Host != "" {
|
|
return req.Host
|
|
}
|
|
return req.URL.Host
|
|
}
|
|
|
|
// Trim leading and trailing spaces and replace sequential spaces with one space, following Trimall()
|
|
// in http://docs.aws.amazon.com/general/latest/gr/sigv4-create-canonical-request.html
|
|
func signV4TrimAll(input string) string {
|
|
// Compress adjacent spaces (a space is determined by
|
|
// unicode.IsSpace() internally here) to one space and return
|
|
return strings.Join(strings.Fields(input), " ")
|
|
}
|