SHAKE it

[meta4ra.git] / cmd / meta4-create / main.go

diff --git a/cmd/meta4-create/main.go b/cmd/meta4-create/main.go
index 772714f38044247d38a8907144213839b4e6b43e..1c799af9bbe1d3c7e8cfb6d865b5cc9b8f6e21fc 100644 (file)
--- a/cmd/meta4-create/main.go
+++ b/cmd/meta4-create/main.go
@@ -1,6 +1,6 @@
 /*
 meta4a -- Metalink 4.0 creator
-Copyright (C) 2021-2022 Sergey Matveev <stargrave@stargrave.org>
+Copyright (C) 2021-2023 Sergey Matveev <stargrave@stargrave.org>
 
 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
@@ -25,52 +25,125 @@ import (
        "encoding/hex"
        "encoding/xml"
        "flag"
+       "hash"
        "io"
        "log"
        "os"
-       "path/filepath"
+       "path"
+       "sync"
        "time"
 
+       "go.cypherpunks.ru/gogost/v5/gost34112012256"
+       "go.cypherpunks.ru/gogost/v5/gost34112012512"
        "go.stargrave.org/meta4ra"
+       "golang.org/x/crypto/sha3"
 )
 
+type MultiHasher struct {
+       sha256h      hash.Hash
+       sha512h      hash.Hash
+       streebog256h hash.Hash
+       streebog512h hash.Hash
+       shake128h    sha3.ShakeHash
+       shake256h    sha3.ShakeHash
+       g            sync.WaitGroup
+}
+
+func NewMultiHasher() *MultiHasher {
+       return &MultiHasher{
+               sha256h:      sha256.New(),
+               sha512h:      sha512.New(),
+               streebog256h: gost34112012256.New(),
+               streebog512h: gost34112012512.New(),
+               shake128h:    sha3.NewShake128(),
+               shake256h:    sha3.NewShake256(),
+       }
+}
+
+func (h *MultiHasher) Write(p []byte) (n int, err error) {
+       h.g.Add(6)
+       go func() {
+               if _, err := h.sha256h.Write(p); err != nil {
+                       panic(err)
+               }
+               h.g.Done()
+       }()
+       go func() {
+               if _, err := h.sha512h.Write(p); err != nil {
+                       panic(err)
+               }
+               h.g.Done()
+       }()
+       go func() {
+               if _, err := h.streebog256h.Write(p); err != nil {
+                       panic(err)
+               }
+               h.g.Done()
+       }()
+       go func() {
+               if _, err := h.streebog512h.Write(p); err != nil {
+                       panic(err)
+               }
+               h.g.Done()
+       }()
+       go func() {
+               if _, err := h.shake128h.Write(p); err != nil {
+                       panic(err)
+               }
+               h.g.Done()
+       }()
+       go func() {
+               if _, err := h.shake256h.Write(p); err != nil {
+                       panic(err)
+               }
+               h.g.Done()
+       }()
+       h.g.Wait()
+       return len(p), nil
+}
+
 func main() {
-       file := flag.String("file", "", "Path to file")
+       fn := flag.String("fn", "", "Filename")
        mtime := flag.String("mtime", "", "Take that file's mtime as a Published date")
        desc := flag.String("desc", "", "Description")
        sig := flag.String("sig", "", "Path to signature file")
        torrent := flag.String("torrent", "", "Torrent URL")
        log.SetFlags(log.Lshortfile)
        flag.Parse()
+       if *fn == "" {
+               log.Fatalln("empty -fn")
+       }
        urls := make([]meta4ra.URL, 0, len(flag.Args()))
        for _, u := range flag.Args() {
                urls = append(urls, meta4ra.URL{URL: u})
        }
-       fd, err := os.Open(*file)
+       br := bufio.NewReaderSize(os.Stdin, 1<<20)
+       buf := make([]byte, 1<<20)
+       h := NewMultiHasher()
+       size, err := io.CopyBuffer(h, br, buf)
        if err != nil {
                log.Fatalln(err)
        }
-       fi, err := fd.Stat()
-       if err != nil {
-               log.Fatalln(err)
+       shake128 := make([]byte, 32)
+       if _, err = io.ReadFull(h.shake128h, shake128); err != nil {
+               panic(err)
        }
-       sha256Hasher := sha256.New()
-       sha512Hasher := sha512.New()
-       _, err = io.Copy(
-               io.MultiWriter(sha256Hasher, sha512Hasher),
-               bufio.NewReader(fd),
-       )
-       if err != nil {
-               log.Fatalln(err)
+       shake256 := make([]byte, 64)
+       if _, err = io.ReadFull(h.shake256h, shake256); err != nil {
+               panic(err)
        }
        f := meta4ra.File{
-               Name:        filepath.Base(*file),
+               Name:        path.Base(*fn),
                Description: *desc,
-               Size:        uint64(fi.Size()),
+               Size:        uint64(size),
                URLs:        urls,
                Hashes: []meta4ra.Hash{
-                       {Type: meta4ra.HashSHA256, Hash: hex.EncodeToString(sha256Hasher.Sum(nil))},
-                       {Type: meta4ra.HashSHA512, Hash: hex.EncodeToString(sha512Hasher.Sum(nil))},
+                       {Type: meta4ra.HashSHA256, Hash: hex.EncodeToString(h.sha256h.Sum(nil))},
+                       {Type: meta4ra.HashSHA512, Hash: hex.EncodeToString(h.sha512h.Sum(nil))},
+                       {Type: meta4ra.HashStreebog256, Hash: hex.EncodeToString(h.streebog256h.Sum(nil))},
+                       {Type: meta4ra.HashStreebog512, Hash: hex.EncodeToString(h.streebog512h.Sum(nil))},
+                       {Type: meta4ra.HashSHAKE128, Hash: hex.EncodeToString(shake128)},
+                       {Type: meta4ra.HashSHAKE256, Hash: hex.EncodeToString(shake256)},
                },
        }
        if *sig != "" {