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Remove hash check while downloading (broken for some titles)

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Xpl0itU 2024-04-01 00:54:44 +02:00
parent 6e3ed060d8
commit 80311a7647
3 changed files with 26 additions and 143 deletions
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84
downloader.go
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@ -3,10 +3,7 @@ package wiiudownloader
import (
"bytes"
"context"
"crypto/aes"
"crypto/cipher"
"encoding/binary"
"encoding/hex"
"fmt"
"io"
"net/http"
@ -54,7 +51,7 @@ func downloadFile(ctx context.Context, progressReporter ProgressReporter, client
req.Header.Set("User-Agent", "WiiUDownloader")
req.Header.Set("Connection", "Keep-Alive")
req.Header.Set("Accept-Encoding", "")
req.Header.Set("Accept-Encoding", "gzip")
resp, err := client.Do(req)
if err != nil {
@ -82,37 +79,35 @@ func downloadFile(ctx context.Context, progressReporter ProgressReporter, client
ticker := time.NewTicker(250 * time.Millisecond)
defer ticker.Stop()
Loop:
for {
n, err := resp.Body.Read(buffer)
if err != nil && err != io.EOF {
if doRetries && attempt < maxRetries {
time.Sleep(retryDelay)
break
}
return fmt.Errorf("download error after %d attempts: %+v", attempt, err)
}
if n == 0 {
break
}
_, err = file.Write(buffer[:n])
if err != nil {
if doRetries && attempt < maxRetries {
time.Sleep(retryDelay)
break
}
return fmt.Errorf("write error after %d attempts: %+v", attempt, err)
}
downloaded += int64(n)
select {
case <-ctx.Done():
return ctx.Err()
case <-ticker.C:
progressReporter.UpdateDownloadProgress(downloaded, calculateDownloadSpeed(downloaded, startTime, time.Now()), filePath)
default:
n, err := resp.Body.Read(buffer)
if err != nil && err != io.EOF {
if doRetries && attempt < maxRetries {
time.Sleep(retryDelay)
break
}
return fmt.Errorf("download error after %d attempts: %+v", attempt, err)
}
if n == 0 {
break Loop
}
_, err = file.Write(buffer[:n])
if err != nil {
if doRetries && attempt < maxRetries {
time.Sleep(retryDelay)
break
}
return fmt.Errorf("write error after %d attempts: %+v", attempt, err)
}
downloaded += int64(n)
}
}
break
@ -129,10 +124,6 @@ func DownloadTitle(cancelCtx context.Context, titleID, outputDirectory string, d
outputDir := strings.TrimRight(outputDirectory, "/\\")
baseURL := fmt.Sprintf("http://ccs.cdn.c.shop.nintendowifi.net/ccs/download/%s", titleID)
titleIDBytes, err := hex.DecodeString(titleID)
if err != nil {
return err
}
if err := os.MkdirAll(outputDir, os.ModePerm); err != nil {
return err
@ -171,11 +162,6 @@ func DownloadTitle(cancelCtx context.Context, titleID, outputDirectory string, d
return err
}
}
tikData, err := os.ReadFile(tikPath)
if err != nil {
return err
}
encryptedTitleKey := tikData[0x1BF : 0x1BF+0x10]
var contentCount uint16
if err := binary.Read(bytes.NewReader(tmdData[478:480]), binary.BigEndian, &contentCount); err != nil {
@ -217,20 +203,6 @@ func DownloadTitle(cancelCtx context.Context, titleID, outputDirectory string, d
defer certFile.Close()
logger.Info("Certificate saved to %v \n", certPath)
c, err := aes.NewCipher(commonKey)
if err != nil {
return fmt.Errorf("failed to create AES cipher: %w", err)
}
decryptedTitleKey := make([]byte, len(encryptedTitleKey))
cbc := cipher.NewCBCDecrypter(c, append(titleIDBytes, make([]byte, 8)...))
cbc.CryptBlocks(decryptedTitleKey, encryptedTitleKey)
cipherHashTree, err := aes.NewCipher(decryptedTitleKey)
if err != nil {
return fmt.Errorf("failed to create AES cipher: %w", err)
}
var content Content
tmdDataReader := bytes.NewReader(tmdData)
@ -257,14 +229,6 @@ func DownloadTitle(cancelCtx context.Context, titleID, outputDirectory string, d
}
return err
}
content.Hash = tmdData[offset+16 : offset+0x14]
content.Size = contentSizes[i]
if err := checkContentHashes(outputDirectory, content, cipherHashTree); err != nil {
if progressReporter.Cancelled() {
break
}
return err
}
}
if progressReporter.Cancelled() {
break