From 907f77aa662740c651acb99d991f352df6b7adab Mon Sep 17 00:00:00 2001
From: keven1024 <keven@fudaoyuan.icu>
Date: Wed, 8 Apr 2026 23:48:07 +0800
Subject: [PATCH] refactor(backend): update file hash calculation from MD5 to
 SHA1 and rename related error handling

---
 backend/internal/controllers/errors.go | 2 +-
 backend/internal/controllers/file.go   | 6 +++---
 pkg/utils/file.go                      | 6 +++---
 worker/internal/services/file.go       | 2 +-
 4 files changed, 8 insertions(+), 8 deletions(-)

diff --git a/backend/internal/controllers/errors.go b/backend/internal/controllers/errors.go
index bd290dc..0365056 100644
--- a/backend/internal/controllers/errors.go
+++ b/backend/internal/controllers/errors.go
@@ -17,7 +17,7 @@ var (
 	ErrInvalidFileSliceIndex  = errors.New("InvalidFileSliceIndex")  // 文件切片索引错误
 	ErrInvalidFileSliceSize   = errors.New("InvalidFileSliceSize")   // 文件切片大小错误
 	ErrIncompleteFileSlices   = errors.New("IncompleteFileSlices")   // 文件切片不完整
-	ErrFileMD5Mismatch        = errors.New("FileMD5Mismatch")        // 文件MD5不一致
+	ErrFileHashMismatch       = errors.New("FileHashMismatch")       // 文件Hash不一致
 
 	// 分享相关
 	ErrShareFileNotFound     = errors.New("ShareFileNotFound")     // 分享文件不存在
diff --git a/backend/internal/controllers/file.go b/backend/internal/controllers/file.go
index 4bcde6d..29e6d4e 100644
--- a/backend/internal/controllers/file.go
+++ b/backend/internal/controllers/file.go
@@ -212,18 +212,18 @@ func FinishUploadTask(c *echo.Context) error {
 		return utils.HTTPErrorHandler(c, err)
 	}
 
-	// 计算文件MD5
+	// 计算文件SHA1
 	file, err := os.Open(mergeFilePath)
 	if err != nil {
 		return utils.HTTPErrorHandler(c, err)
 	}
 	defer file.Close() //nolint:errcheck
 
-	file_hash, err := u.GetFileMd5(file)
+	file_hash, err := u.GetFileSHA1(file)
 	if err != nil || file_hash != fileInfo.FileHash {
 		defer os.Remove(mergeFilePath) //nolint:errcheck
 		if err == nil {
-			return utils.HTTPErrorHandler(c, ErrFileMD5Mismatch)
+			return utils.HTTPErrorHandler(c, ErrFileHashMismatch)
 		}
 		return utils.HTTPErrorHandler(c, err)
 	}
diff --git a/pkg/utils/file.go b/pkg/utils/file.go
index 0282eba..ac06b8e 100644
--- a/pkg/utils/file.go
+++ b/pkg/utils/file.go
@@ -2,7 +2,7 @@ package utils
 
 import (
 	"bufio"
-	"crypto/md5"
+	"crypto/sha1"
 	"fmt"
 	"io"
 	"os"
@@ -15,9 +15,9 @@ func GetFileId(fileHash string, fileSize int64) string {
 	return fmt.Sprintf("%s_%d", fileHash, fileSize)
 }
 
-func GetFileMd5(file io.Reader) (string, error) {
+func GetFileSHA1(file io.Reader) (string, error) {
 	const bufferSize = 1024 * 1000 // 1MB
-	hash := md5.New()
+	hash := sha1.New()
 	buf := make([]byte, bufferSize)
 	reader := bufio.NewReader(file)
 	for {
diff --git a/worker/internal/services/file.go b/worker/internal/services/file.go
index e4d907a..5ed67fe 100644
--- a/worker/internal/services/file.go
+++ b/worker/internal/services/file.go
@@ -31,7 +31,7 @@ func GenStandardFile(filePath string, mimeType string) (GenStandardFileReturn, e
 	}
 	fileSize := fileInfo.Size()
 
-	fileHash, err := u.GetFileMd5(file)
+	fileHash, err := u.GetFileSHA1(file)
 	if err != nil {
 		return GenStandardFileReturn{}, err
 	}