126 lines
2.9 KiB
Go
126 lines
2.9 KiB
Go
// Copyright (c) 2021 The Srpmproc Authors
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in all
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// copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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// SOFTWARE.
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package data
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import (
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"crypto/md5"
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"crypto/sha1"
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"crypto/sha256"
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"crypto/sha512"
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"encoding/hex"
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"github.com/go-git/go-billy/v5"
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"hash"
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"io"
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"log"
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"os"
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"path/filepath"
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)
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func CopyFromFs(from billy.Filesystem, to billy.Filesystem, path string) {
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read, err := from.ReadDir(path)
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if err != nil {
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log.Fatalf("could not read dir: %v", err)
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}
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for _, fi := range read {
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fullPath := filepath.Join(path, fi.Name())
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if fi.IsDir() {
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_ = to.MkdirAll(fullPath, 0755)
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CopyFromFs(from, to, fullPath)
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} else {
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_ = to.Remove(fullPath)
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f, err := to.OpenFile(fullPath, os.O_RDWR|os.O_CREATE|os.O_TRUNC, fi.Mode())
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if err != nil {
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log.Fatalf("could not open file: %v", err)
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}
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oldFile, err := from.Open(fullPath)
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if err != nil {
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log.Fatalf("could not open from file: %v", err)
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}
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_, err = io.Copy(f, oldFile)
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if err != nil {
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log.Fatalf("could not copy from oldFile to new: %v", err)
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}
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}
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}
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}
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func IgnoredContains(a []*IgnoredSource, b string) bool {
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for _, val := range a {
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if val.Name == b {
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return true
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}
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}
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return false
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}
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func StrContains(a []string, b string) bool {
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for _, val := range a {
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if val == b {
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return true
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}
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}
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return false
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}
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// check if content and checksum matches
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// returns the hash type if success else nil
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func CompareHash(content []byte, checksum string) hash.Hash {
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var hashType hash.Hash
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switch len(checksum) {
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case 128:
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hashType = sha512.New()
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break
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case 64:
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hashType = sha256.New()
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break
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case 40:
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hashType = sha1.New()
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break
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case 32:
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hashType = md5.New()
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break
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default:
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return nil
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}
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hashType.Reset()
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_, err := hashType.Write(content)
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if err != nil {
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return nil
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}
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calculated := hex.EncodeToString(hashType.Sum(nil))
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if calculated != checksum {
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log.Printf("wanted checksum %s, but got %s", checksum, calculated)
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return nil
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}
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return hashType
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}
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