mirror of
https://github.com/yunionio/cloudpods.git
synced 2026-05-09 23:28:20 +08:00
92 lines
2.0 KiB
Go
92 lines
2.0 KiB
Go
// Copyright 2019 Yunion
|
|
//
|
|
// 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 fileutils2
|
|
|
|
import (
|
|
"crypto/md5"
|
|
"crypto/sha1"
|
|
"crypto/sha256"
|
|
"crypto/sha512"
|
|
"fmt"
|
|
"hash"
|
|
"io"
|
|
"os"
|
|
|
|
"yunion.io/x/log"
|
|
)
|
|
|
|
func FileHash(filename string, hash []hash.Hash) ([][]byte, error) {
|
|
fp, err := os.Open(filename)
|
|
if err != nil {
|
|
log.Errorf("open file for hash fail %s", err)
|
|
return nil, err
|
|
}
|
|
defer fp.Close()
|
|
|
|
buf := make([]byte, 4096)
|
|
for {
|
|
n, err := fp.Read(buf)
|
|
if n > 0 {
|
|
for i := 0; i < len(hash); i += 1 {
|
|
hash[i].Write(buf[:n])
|
|
}
|
|
}
|
|
if n == 0 || err == io.EOF {
|
|
break
|
|
}
|
|
if err != nil {
|
|
log.Errorf("read file error %s", err)
|
|
return nil, err
|
|
}
|
|
}
|
|
sums := make([][]byte, len(hash))
|
|
for i := 0; i < len(hash); i += 1 {
|
|
sums[i] = hash[i].Sum(nil)
|
|
}
|
|
return sums, nil
|
|
}
|
|
|
|
func MD5(filename string) (string, error) {
|
|
sums, err := FileHash(filename, []hash.Hash{md5.New()})
|
|
if err != nil {
|
|
return "", err
|
|
}
|
|
return fmt.Sprintf("%x", sums[0]), nil
|
|
}
|
|
|
|
func SHA1(filename string) (string, error) {
|
|
sums, err := FileHash(filename, []hash.Hash{sha1.New()})
|
|
if err != nil {
|
|
return "", err
|
|
}
|
|
return fmt.Sprintf("%x", sums[0]), nil
|
|
}
|
|
|
|
func SHA256(filename string) (string, error) {
|
|
sums, err := FileHash(filename, []hash.Hash{sha256.New()})
|
|
if err != nil {
|
|
return "", err
|
|
}
|
|
return fmt.Sprintf("%x", sums[0]), nil
|
|
}
|
|
|
|
func SHA512(filename string) (string, error) {
|
|
sums, err := FileHash(filename, []hash.Hash{sha512.New()})
|
|
if err != nil {
|
|
return "", err
|
|
}
|
|
return fmt.Sprintf("%x", sums[0]), nil
|
|
}
|