docs: update changelog

CHANGELOG.md

@@ -0,0 +1,75 @@
+# Changelog
+
+All notable changes to this project will be documented in this file.
+
+The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
+and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
+
+## [Unreleased]
+
+## [v0.2.18] - 2025-11-16
+
+### Changed
+- QMC2: Fix `musicex\0` tag parsing.
+- MMKV: Improved tolerance for corrupted MMKV file parsing.
+- Updated project dependencies.
+
+## [v0.2.17] - 2025-09-09 ⚠️ **(Broken Release)**
+
+### Changed
+- Update RegEx used to extract UDID in plist.
+
+## [v0.2.16] - 2025-09-09 ⚠️ **(Broken Release)**
+
+### Changed
+- Update RegEx used to extract UDID in plist.
+
+## [v0.2.15] - 2025-09-09 ⚠️ **(Broken Release)**
+
+### Added
+- Support MMKV dump in QQMusic Mac 10.x (AppStore version).
+
+## [v0.2.14] - 2025-09-08 ⚠️ **(Broken Release)**
+
+### Added
+- Support MMKV dump in QQMusic Mac 10.x.
+
+## [v0.2.13] - 2025-09-06 ⚠️ **(Broken Release)**
+
+### Changed
+- Updated project namespace and repository URLs to new url
+- Upgraded Go version requirement to 1.25
+- Restricted KGG database support to Windows platform only
+- Enhanced MMKV key extraction logic with improved reliability
+
+### Fixed
+- Fixed NCM metadata parsing to properly handle mixed-type artist arrays
+- Drop i386 targets in CI build
+
+## [v0.2.12] - 2025-05-07
+
+### Added
+- KGG (KGMv5) file format support
+- Support for `.mflacm` file extension
+
+### Changed
+- Updated default version identifier to "custom" for development builds
+- Upgraded GoLang version
+
+## [v0.2.11] - 2024-11-05
+
+### Fixed
+- Resolved relative path resolution issues on Windows platforms (#108)
+- Improved cross-platform compatibility for file path handling
+
+---
+
+## Historical Versions
+
+**Note**: This changelog was created starting from v0.2.11. For changes in earlier versions (v0.2.10 and below), please refer to the project's git commit history:
+
+```bash
+git log --oneline --before="2024-11-05"
+```
+
+Or view the complete commit history on the project repository for detailed information about features, fixes, and improvements in previous releases.

algo/qmc/key_mmkv_loader_darwin.go

@@ -1,22 +1,20 @@
 package qmc
 
 import (
-	"fmt"
-	"os"
-	"path/filepath"
-
 	"git.um-react.app/um/cli/algo/common"
+	"git.um-react.app/um/cli/algo/qmc/qmmac"
+	"git.um-react.app/um/cli/internal/mmkv"
 	"go.uber.org/zap"
 )
 
 func LoadMMKVOrDefault(path string, key string, logger *zap.Logger) (result common.QMCKeys, err error) {
-	key1, err := loadMacKeysV8(logger)
+	key1, err := qmmac.LoadMacKeysV8(logger)
 	if err != nil {
 		key1 = nil
 		logger.Warn("LoadMMKVOrDefault: could not read QQMusic v8.8.0 keys", zap.Error(err))
 	}
 
-	key2, err := loadMacKeysV10(logger)
+	key2, err := qmmac.LoadMacKeysV10(logger)
 	if err != nil {
 		key2 = nil
 		logger.Warn("LoadMMKVOrDefault: could not read QQMusic v10.x keys", zap.Error(err))
@@ -25,41 +23,16 @@ func LoadMMKVOrDefault(path string, key string, logger *zap.Logger) (result comm
 	userKeys := make(common.QMCKeys)
 	if path != "" {
 		logger.Info("Using user mmkv")
-		userKeys, err = LoadMMKV(path, key, logger)
+		userKeys, err = mmkv.LoadFromPath(path, key, logger)
 		if err != nil {
 			userKeys = nil
 			logger.Warn("LoadMMKVOrDefault: could not read user keys", zap.Error(err))
 		}
 	}
 
-	allKeys := mergeMMKVKeys(key1, key2, userKeys)
+	allKeys := mmkv.Merge(key1, key2, userKeys)
 
 	logger.Debug("Keys loaded", zap.Any("keys", allKeys), zap.Int("len", len(allKeys)))
 
 	return allKeys, nil
 }
-
-func loadMacKeysV8(logger *zap.Logger) (keys common.QMCKeys, err error) {
-	homeDir, err := os.UserHomeDir()
-	if err != nil {
-		logger.Warn("Failed to get home dir")
-		return nil, fmt.Errorf("loadMacKeysV8: failed to get home: %w", err)
-	}
-	p := filepath.Join(
-		homeDir,
-		"Library/Containers/com.tencent.QQMusicMac/Data",
-		"Library/Application Support/QQMusicMac/mmkv",
-		"MMKVStreamEncryptId",
-	)
-	if f, err := os.Stat(p); err == nil && !f.IsDir() {
-		logger.Info("Using QQMusic 8.x mmkv", zap.String("mmkv", p))
-		return LoadMMKV(p, "", logger)
-	}
-	return nil, nil
-}
-
-func loadMacKeysV10(logger *zap.Logger) (common.QMCKeys, error) {
-	// TODO: stub only
-	var _ = logger
-	return nil, nil
-}

algo/qmc/qmc.go

@@ -137,11 +137,11 @@ func (d *Decoder) searchKey() (err error) {
 		d.decodedKey, err = deriveKey([]byte(key))
 		if err == nil {
 			d.audioLen = fileSize
-			return nil
-		}
+		} else {
 			d.decodedKey = nil
 			d.logger.Warn("could not derive key, skip", zap.Error(err))
 		}
+	}
 
 	suffixBuf := make([]byte, 4)
 	if _, err := io.ReadFull(d.raw, suffixBuf); err != nil {
@@ -153,7 +153,7 @@ func (d *Decoder) searchKey() (err error) {
 		return d.readRawMetaQTag()
 	case "STag":
 		return errors.New("qmc: file with 'STag' suffix doesn't contains media key")
-	// MusicEx\0
+	// speculative guess for "musicex\0"
 	case "cex\x00":
 		footer, err := NewMusicExTag(d.raw)
 		if err != nil {
@@ -161,17 +161,26 @@ func (d *Decoder) searchKey() (err error) {
 		}
 		d.audioLen = fileSize - int(footer.TagSize)
 		if key, ok := d.params.CryptoParams.QmcKeys.Get(footer.MediaFileName); ok {
+			d.logger.Debug("searchKey: using key from MediaFileName", zap.String("MediaFileName", footer.MediaFileName), zap.String("key", key))
 			d.decodedKey, err = deriveKey([]byte(key))
+		} else if d.decodedKey == nil {
+			return errors.New("searchKey: no key found for musicex tag")
 		}
 		return err
 	default:
-		size := binary.LittleEndian.Uint32(suffixBuf)
+		// if we already have a key from legacy mmkv, use it
+		if d.decodedKey != nil {
+			return nil
+		}
 
+		// try to use suffix as key length
+		size := binary.LittleEndian.Uint32(suffixBuf)
 		if size <= 0xFFFF && size != 0 { // assume size is key len
 			return d.readRawKey(int64(size))
 		}
 
-		// try to use default static cipher
+		// try to use default static cipher,
+		//   or the key read from the legacy mmkv
 		d.audioLen = fileSize
 		return nil
 	}

algo/qmc/qmc_footer_musicex.go

@@ -42,24 +42,25 @@ func NewMusicExTag(f io.ReadSeeker) (*MusicExTagV1, error) {
 	tag := &MusicExTagV1{
 		TagSize:    binary.LittleEndian.Uint32(buffer[0x00:0x04]),
 		TagVersion: binary.LittleEndian.Uint32(buffer[0x04:0x08]),
-		TagMagic:   buffer[0x04:0x0C],
+		TagMagic:   buffer[0x08:],
 	}
 
 	if !bytes.Equal(tag.TagMagic, []byte("musicex\x00")) {
 		return nil, errors.New("MusicEx magic mismatch")
 	}
 	if tag.TagVersion != 1 {
-		return nil, errors.New(fmt.Sprintf("unsupported musicex tag version. expecting 1, got %d", tag.TagVersion))
+		return nil, fmt.Errorf("unsupported musicex tag version. expecting 1, got %d", tag.TagVersion)
 	}
 
 	if tag.TagSize < 0xC0 {
-		return nil, errors.New(fmt.Sprintf("unsupported musicex tag size. expecting at least 0xC0, got 0x%02x", tag.TagSize))
+		return nil, fmt.Errorf("unsupported musicex tag size. expecting at least 0xC0, got 0x%02x", tag.TagSize)
 	}
 
 	buffer = make([]byte, tag.TagSize)
+	f.Seek(-int64(tag.TagSize), io.SeekEnd)
 	bytesRead, err = f.Read(buffer)
 	if err != nil {
-		return nil, err
+		return nil, fmt.Errorf("MusicExV1: Read error %w", err)
 	}
 	if uint32(bytesRead) != tag.TagSize {
 		return nil, fmt.Errorf("MusicExV1: read %d bytes (expected %d)", bytesRead, tag.TagSize)

algo/qmc/qmc_meta.go

@@ -61,7 +61,7 @@ func (d *Decoder) getMetaBySongID(ctx context.Context) error {
 
 func (d *Decoder) searchMetaOnline(ctx context.Context, original common.AudioMeta) error {
 	c := client.NewQQMusicClient() // todo: use global client
-	keyword := lo.WithoutEmpty(append(
+	keyword := lo.Compact(append(
 		[]string{original.GetTitle(), original.GetAlbum()},
 		original.GetArtists()...),
 	)

algo/qmc/qmmac/v10_darwin.go

@@ -0,0 +1,163 @@
+package qmmac
+
+import (
+	"crypto/md5"
+	"fmt"
+	"os"
+	"path/filepath"
+	"regexp"
+	"strconv"
+	"strings"
+
+	"git.um-react.app/um/cli/algo/common"
+	"git.um-react.app/um/cli/internal/mmkv"
+	"go.uber.org/zap"
+)
+
+var _RE_UDID_V10 = regexp.MustCompile(`_\x10\(([0-9a-f]{40})`)
+
+type QQMusicMacV10 struct {
+	logger   *zap.Logger
+	mmkv_dir string
+}
+
+func (q *QQMusicMacV10) extractUdids(data []byte) ([]string, error) {
+	var result []string
+	for _, match := range _RE_UDID_V10.FindAllSubmatch(data, -1) {
+		udid := string(match[1])
+		q.logger.Debug("extractUdids: found udid", zap.String("udid", udid))
+		result = append(result, udid)
+	}
+	return result, nil
+}
+
+func (q *QQMusicMacV10) caesar(text string, shift int) string {
+	var result strings.Builder
+
+	for _, char := range []byte(text) {
+		var transformed byte
+		if 'A' <= char && char <= 'Z' {
+			transformed = (char-'A'+byte(shift))%26 + 'A'
+		} else if 'a' <= char && char <= 'z' {
+			transformed = (char-'a'+byte(shift))%26 + 'a'
+		} else if '0' <= char && char <= '9' {
+			transformed = (char-'0'+byte(shift))%10 + '0'
+		} else {
+			transformed = char
+		}
+		result.WriteByte(transformed)
+	}
+
+	return result.String()
+}
+
+func (q *QQMusicMacV10) mmkv(udid string, id int) (path string, key string, err error) {
+	str1 := q.caesar(udid, id+3)
+	int1, err := strconv.ParseInt(udid[5:7], 16, 32)
+	if err != nil {
+		return "", "", fmt.Errorf("getMmkv: could not parse udid: %w", err)
+	}
+	int2 := 5 + (int(int1)+id)%4
+	name := str1[:int2]
+	path = filepath.Join(q.mmkv_dir, name)
+
+	int3 := id + 0xa546
+	str3 := fmt.Sprintf("%s%04x", udid, int3)
+	hash := md5.Sum([]byte(str3))
+	key = fmt.Sprintf("%x", hash)[:16]
+
+	return path, key, nil
+}
+
+func (q *QQMusicMacV10) loadByPList(plist_path string) ([]common.QMCKeys, error) {
+	logger := q.logger.With(zap.String("plist", plist_path))
+	logger.Debug("loadMacKeysV10: load key from plist")
+	if f, err := os.Stat(plist_path); err != nil || f.IsDir() {
+		logger.Debug("loadMacKeysV10: plist not found")
+		return nil, nil
+	}
+	plist_data, err := os.ReadFile(plist_path)
+	if err != nil {
+		logger.Warn("loadMacKeysV10: could not read plist", zap.Error(err))
+		return nil, fmt.Errorf("loadMacKeysV10: could not read plist: %w", err)
+	}
+	udids, err := q.extractUdids(plist_data)
+	if err != nil {
+		logger.Warn("loadMacKeysV10: could not extract udid", zap.Error(err))
+		return nil, fmt.Errorf("loadMacKeysV10: could not extract udid: %w", err)
+	}
+	logger.Debug("loadMacKeysV10: read udid", zap.Strings("udids", udids))
+
+	var keysList []common.QMCKeys
+	for _, udid := range udids {
+		keys, err := q.loadByUDID(udid, logger)
+		if err != nil {
+			logger.Warn("loadMacKeysV10: could not load by udid", zap.String("udid", udid), zap.Error(err))
+			continue
+		}
+		keysList = append(keysList, keys)
+	}
+	return keysList, nil
+}
+func (q *QQMusicMacV10) loadByUDID(udid string, logger *zap.Logger) (common.QMCKeys, error) {
+	mmkv_path, mmkv_key, err := q.mmkv(udid, 1)
+	if err != nil {
+		logger.Warn("loadMacKeysV10: could not get mmkv name/key", zap.Error(err))
+		return nil, fmt.Errorf("loadMacKeysV10: could not get mmkv name/key: %w", err)
+	}
+	logger.Info("Using QQMusic 10.x mmkv", zap.String("mmkv", mmkv_path))
+	keys, err := mmkv.LoadFromPath(mmkv_path, mmkv_key, logger)
+	if err != nil {
+		logger.Warn("loadMacKeysV10: could not load mmkv", zap.String("mmkv", mmkv_path), zap.Error(err))
+		return nil, fmt.Errorf("loadMacKeysV10: could not load mmkv: %w", err)
+	}
+	return keys, nil
+}
+
+func LoadMacKeysV10(logger *zap.Logger) (common.QMCKeys, error) {
+	homeDir, err := os.UserHomeDir()
+	if err != nil {
+		logger.Warn("Failed to get home dir")
+		return nil, fmt.Errorf("loadMacKeysV10: failed to get home: %w", err)
+	}
+
+	// MMKV dir is always inside the sandbox container
+	mmkv_dir := filepath.Join(
+		homeDir,
+		"Library/Containers/com.tencent.QQMusicMac/Data/",
+		"Library/Application Support/QQMusicMac/iData",
+	)
+	if f, err := os.Stat(mmkv_dir); err != nil || !f.IsDir() {
+		logger.Debug("loadMacKeysV10: mmkv dir not found", zap.String("mmkv_dir", mmkv_dir))
+		return nil, nil
+	}
+
+	// without sandbox
+	plist_without_sandbox := filepath.Join(
+		homeDir,
+		"Library/Preferences/com.tencent.QQMusicMac.plist",
+	)
+
+	// with sandbox (e.g. from App Store)
+	plist_sandboxed := filepath.Join(
+		homeDir,
+		"Library/Containers/com.tencent.QQMusicMac/Data/",
+		"Library/Preferences/com.tencent.QQMusicMac.plist",
+	)
+
+	q := QQMusicMacV10{
+		logger:   logger,
+		mmkv_dir: mmkv_dir,
+	}
+
+	keys1, err := q.loadByPList(plist_without_sandbox)
+	if err != nil {
+		return nil, err
+	}
+	keys2, err := q.loadByPList(plist_sandboxed)
+	if err != nil {
+		return nil, err
+	}
+
+	return mmkv.Merge(append(keys1, keys2...)...), nil
+}

algo/qmc/qmmac/v8_darwin.go

@@ -0,0 +1,30 @@
+package qmmac
+
+import (
+	"fmt"
+	"os"
+	"path/filepath"
+
+	"git.um-react.app/um/cli/algo/common"
+	"git.um-react.app/um/cli/internal/mmkv"
+	"go.uber.org/zap"
+)
+
+func LoadMacKeysV8(logger *zap.Logger) (keys common.QMCKeys, err error) {
+	homeDir, err := os.UserHomeDir()
+	if err != nil {
+		logger.Warn("Failed to get home dir")
+		return nil, fmt.Errorf("loadMacKeysV8: failed to get home: %w", err)
+	}
+	p := filepath.Join(
+		homeDir,
+		"Library/Containers/com.tencent.QQMusicMac/Data",
+		"Library/Application Support/QQMusicMac/mmkv",
+		"MMKVStreamEncryptId",
+	)
+	if f, err := os.Stat(p); err == nil && !f.IsDir() {
+		logger.Info("Using QQMusic 8.x mmkv", zap.String("mmkv", p))
+		return mmkv.LoadFromPath(p, "", logger)
+	}
+	return nil, nil
+}

go.mod

@@ -3,32 +3,32 @@ module git.um-react.app/um/cli
 go 1.25.1
 
 require (
-	github.com/fsnotify/fsnotify v1.8.0
+	github.com/fsnotify/fsnotify v1.9.0
 	github.com/go-flac/flacpicture v0.3.0
 	github.com/go-flac/flacvorbis v0.2.0
 	github.com/go-flac/go-flac v1.0.0
-	github.com/samber/lo v1.47.0
-	github.com/unlock-music/go-mmkv v0.1.1
-	github.com/urfave/cli/v2 v2.27.5
+	github.com/samber/lo v1.52.0
+	github.com/unlock-music/go-mmkv v0.1.3
+	github.com/urfave/cli/v2 v2.27.7
 	go.uber.org/zap v1.27.0
-	golang.org/x/crypto v0.29.0
-	golang.org/x/exp v0.0.0-20250305212735-054e65f0b394
-	golang.org/x/text v0.20.0
-	modernc.org/sqlite v1.37.0
+	golang.org/x/crypto v0.44.0
+	golang.org/x/text v0.31.0
+	modernc.org/sqlite v1.40.0
 )
 
 require (
-	github.com/cpuguy83/go-md2man/v2 v2.0.5 // indirect
+	github.com/cpuguy83/go-md2man/v2 v2.0.7 // indirect
 	github.com/dustin/go-humanize v1.0.1 // indirect
 	github.com/google/uuid v1.6.0 // indirect
 	github.com/mattn/go-isatty v0.0.20 // indirect
-	github.com/ncruces/go-strftime v0.1.9 // indirect
+	github.com/ncruces/go-strftime v1.0.0 // indirect
 	github.com/remyoudompheng/bigfft v0.0.0-20230129092748-24d4a6f8daec // indirect
 	github.com/russross/blackfriday/v2 v2.1.0 // indirect
-	github.com/xrash/smetrics v0.0.0-20240521201337-686a1a2994c1 // indirect
+	github.com/xrash/smetrics v0.0.0-20250705151800-55b8f293f342 // indirect
 	go.uber.org/multierr v1.11.0 // indirect
-	golang.org/x/sys v0.31.0 // indirect
-	modernc.org/libc v1.62.1 // indirect
+	golang.org/x/exp v0.0.0-20250620022241-b7579e27df2b // indirect
+	golang.org/x/sys v0.38.0 // indirect
+	modernc.org/libc v1.66.10 // indirect
 	modernc.org/mathutil v1.7.1 // indirect
-	modernc.org/memory v1.9.1 // indirect
+	modernc.org/memory v1.11.0 // indirect
 )

go.sum

@@ -1,11 +1,11 @@
-github.com/cpuguy83/go-md2man/v2 v2.0.5 h1:ZtcqGrnekaHpVLArFSe4HK5DoKx1T0rq2DwVB0alcyc=
-github.com/cpuguy83/go-md2man/v2 v2.0.5/go.mod h1:tgQtvFlXSQOSOSIRvRPT7W67SCa46tRHOmNcaadrF8o=
+github.com/cpuguy83/go-md2man/v2 v2.0.7 h1:zbFlGlXEAKlwXpmvle3d8Oe3YnkKIK4xSRTd3sHPnBo=
+github.com/cpuguy83/go-md2man/v2 v2.0.7/go.mod h1:oOW0eioCTA6cOiMLiUPZOpcVxMig6NIQQ7OS05n1F4g=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/dustin/go-humanize v1.0.1 h1:GzkhY7T5VNhEkwH0PVJgjz+fX1rhBrR7pRT3mDkpeCY=
 github.com/dustin/go-humanize v1.0.1/go.mod h1:Mu1zIs6XwVuF/gI1OepvI0qD18qycQx+mFykh5fBlto=
-github.com/fsnotify/fsnotify v1.8.0 h1:dAwr6QBTBZIkG8roQaJjGof0pp0EeF+tNV7YBP3F/8M=
-github.com/fsnotify/fsnotify v1.8.0/go.mod h1:8jBTzvmWwFyi3Pb8djgCCO5IBqzKJ/Jwo8TRcHyHii0=
+github.com/fsnotify/fsnotify v1.9.0 h1:2Ml+OJNzbYCTzsxtv8vKSFD9PbJjmhYF14k/jKC7S9k=
+github.com/fsnotify/fsnotify v1.9.0/go.mod h1:8jBTzvmWwFyi3Pb8djgCCO5IBqzKJ/Jwo8TRcHyHii0=
 github.com/go-flac/flacpicture v0.3.0 h1:LkmTxzFLIynwfhHiZsX0s8xcr3/u33MzvV89u+zOT8I=
 github.com/go-flac/flacpicture v0.3.0/go.mod h1:DPbrzVYQ3fJcvSgLFp9HXIrEQEdfdk/+m0nQCzwodZI=
 github.com/go-flac/flacvorbis v0.2.0 h1:KH0xjpkNTXFER4cszH4zeJxYcrHbUobz/RticWGOESs=
@@ -18,67 +18,69 @@ github.com/google/uuid v1.6.0 h1:NIvaJDMOsjHA8n1jAhLSgzrAzy1Hgr+hNrb57e+94F0=
 github.com/google/uuid v1.6.0/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
 github.com/mattn/go-isatty v0.0.20 h1:xfD0iDuEKnDkl03q4limB+vH+GxLEtL/jb4xVJSWWEY=
 github.com/mattn/go-isatty v0.0.20/go.mod h1:W+V8PltTTMOvKvAeJH7IuucS94S2C6jfK/D7dTCTo3Y=
-github.com/ncruces/go-strftime v0.1.9 h1:bY0MQC28UADQmHmaF5dgpLmImcShSi2kHU9XLdhx/f4=
-github.com/ncruces/go-strftime v0.1.9/go.mod h1:Fwc5htZGVVkseilnfgOVb9mKy6w1naJmn9CehxcKcls=
+github.com/ncruces/go-strftime v1.0.0 h1:HMFp8mLCTPp341M/ZnA4qaf7ZlsbTc+miZjCLOFAw7w=
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internal/ffmpeg/meta_flac.go

@@ -2,14 +2,15 @@ package ffmpeg
 
 import (
 	"context"
-	"go.uber.org/zap"
 	"mime"
+	"slices"
 	"strings"
 
+	"go.uber.org/zap"
+
 	"github.com/go-flac/flacpicture"
 	"github.com/go-flac/flacvorbis"
 	"github.com/go-flac/go-flac"
-	"golang.org/x/exp/slices"
 )
 
 func updateMetaFlac(_ context.Context, outPath string, m *UpdateMetadataParams, logger *zap.Logger) error {

internal/mmkv/mmkv.go

@@ -1,9 +1,8 @@
-package qmc
+package mmkv
 
 import (
 	"fmt"
 	"os"
-	"path/filepath"
 
 	"git.um-react.app/um/cli/algo/common"
 	"git.um-react.app/um/cli/internal/utils"
@@ -11,7 +10,7 @@ import (
 	"go.uber.org/zap"
 )
 
-func mergeMMKVKeys(keys ...common.QMCKeys) common.QMCKeys {
+func Merge(keys ...common.QMCKeys) common.QMCKeys {
 	result := make(common.QMCKeys)
 	for _, k := range keys {
 		for key, value := range k {
@@ -21,7 +20,7 @@ func mergeMMKVKeys(keys ...common.QMCKeys) common.QMCKeys {
 	return result
 }
 
-func LoadMMKV(path string, key string, logger *zap.Logger) (result common.QMCKeys, err error) {
+func LoadFromPath(path string, key string, logger *zap.Logger) (result common.QMCKeys, err error) {
 	mmkv_path := path
 	mmkv_crc := path + ".crc"
 
@@ -33,9 +32,11 @@ func LoadMMKV(path string, key string, logger *zap.Logger) (result common.QMCKey
 	defer mr.Close()
 
 	cr, err := os.Open(mmkv_crc)
-	if err == nil {
+	if err != nil {
 		// crc is optional
-		cr = nil
+		logger.Warn("LoadMMKV: Failed to open crc file, assuming no encryption", zap.Error(err))
+		key = ""
+	} else {
 		defer cr.Close()
 	}
 
@@ -68,41 +69,3 @@ func LoadMMKV(path string, key string, logger *zap.Logger) (result common.QMCKey
 
 	return result, nil
 }
-
-// getRelativeMMKVDir get mmkv dir relative to file (legacy QQMusic for macOS behaviour)
-func getRelativeMMKVDir(file string) (string, error) {
-	mmkvDir := filepath.Join(filepath.Dir(file), "../mmkv")
-	if _, err := os.Stat(mmkvDir); err != nil {
-		return "", fmt.Errorf("stat default mmkv dir: %w", err)
-	}
-
-	keyFile := filepath.Join(mmkvDir, "MMKVStreamEncryptId")
-	if _, err := os.Stat(keyFile); err != nil {
-		return "", fmt.Errorf("stat default mmkv file: %w", err)
-	}
-
-	return mmkvDir, nil
-}
-
-func getDefaultMMKVDir() (string, error) {
-	homeDir, err := os.UserHomeDir()
-	if err != nil {
-		return "", fmt.Errorf("get user home dir: %w", err)
-	}
-
-	mmkvDir := filepath.Join(
-		homeDir,
-		"Library/Containers/com.tencent.QQMusicMac/Data",
-		"Library/Application Support/QQMusicMac/mmkv",
-	)
-	if _, err := os.Stat(mmkvDir); err != nil {
-		return "", fmt.Errorf("stat default mmkv dir: %w", err)
-	}
-
-	keyFile := filepath.Join(mmkvDir, "MMKVStreamEncryptId")
-	if _, err := os.Stat(keyFile); err != nil {
-		return "", fmt.Errorf("stat default mmkv file: %w", err)
-	}
-
-	return mmkvDir, nil
-}

internal/sniff/audio.go

@@ -3,8 +3,7 @@ package sniff
 import (
 	"bytes"
 	"encoding/binary"
-
-	"golang.org/x/exp/slices"
+	"slices"
 )
 
 type Sniffer interface {