mirror of
https://github.com/minio/minio.git
synced 2024-12-26 07:05:55 -05:00
105 lines
2.8 KiB
Go
105 lines
2.8 KiB
Go
/*
|
|
* Minio Cloud Storage, (C) 2015 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 main
|
|
|
|
import (
|
|
"crypto/hmac"
|
|
"encoding/hex"
|
|
"io"
|
|
"regexp"
|
|
"strings"
|
|
"unicode/utf8"
|
|
|
|
"github.com/minio/minio/pkg/crypto/sha256"
|
|
)
|
|
|
|
// sum256Reader calculate sha256 sum for an input read seeker
|
|
func sum256Reader(reader io.ReadSeeker) ([]byte, error) {
|
|
h := sha256.New()
|
|
var err error
|
|
|
|
start, _ := reader.Seek(0, 1)
|
|
defer reader.Seek(start, 0)
|
|
|
|
for err == nil {
|
|
length := 0
|
|
byteBuffer := make([]byte, 1024*1024)
|
|
length, err = reader.Read(byteBuffer)
|
|
byteBuffer = byteBuffer[0:length]
|
|
h.Write(byteBuffer)
|
|
}
|
|
|
|
if err != io.EOF {
|
|
return nil, err
|
|
}
|
|
|
|
return h.Sum(nil), nil
|
|
}
|
|
|
|
// 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 []byte, data []byte) []byte {
|
|
hash := hmac.New(sha256.New, key)
|
|
hash.Write(data)
|
|
return hash.Sum(nil)
|
|
}
|
|
|
|
// getURLEncodedName encode the strings from UTF-8 byte representations to HTML hex escape sequences
|
|
//
|
|
// This is necessary since regular url.Parse() and url.Encode() functions do not support UTF-8
|
|
// non english characters cannot be parsed due to the nature in which url.Encode() is written
|
|
//
|
|
// This function on the other hand is a direct replacement for url.Encode() technique to support
|
|
// pretty much every UTF-8 character.
|
|
func getURLEncodedName(name string) string {
|
|
// if object matches reserved string, no need to encode them
|
|
reservedNames := regexp.MustCompile("^[a-zA-Z0-9-_.~/]+$")
|
|
if reservedNames.MatchString(name) {
|
|
return name
|
|
}
|
|
var encodedName string
|
|
for _, s := range name {
|
|
if 'A' <= s && s <= 'Z' || 'a' <= s && s <= 'z' || '0' <= s && s <= '9' { // §2.3 Unreserved characters (mark)
|
|
encodedName = encodedName + string(s)
|
|
continue
|
|
}
|
|
switch s {
|
|
case '-', '_', '.', '~', '/': // §2.3 Unreserved characters (mark)
|
|
encodedName = encodedName + string(s)
|
|
continue
|
|
default:
|
|
len := utf8.RuneLen(s)
|
|
if len < 0 {
|
|
return name
|
|
}
|
|
u := make([]byte, len)
|
|
utf8.EncodeRune(u, s)
|
|
for _, r := range u {
|
|
hex := hex.EncodeToString([]byte{r})
|
|
encodedName = encodedName + "%" + strings.ToUpper(hex)
|
|
}
|
|
}
|
|
}
|
|
return encodedName
|
|
}
|