chore: bump version

Reviewed-on: um/cli#95

algo/ncm/ncm.go

@@ -149,12 +149,18 @@ func (d *Decoder) readMetaData() error {
 }
 
 func (d *Decoder) readCoverData() error {
-	bCoverCRC := make([]byte, 4)
-	if _, err := io.ReadFull(d.rd, bCoverCRC); err != nil {
-		return fmt.Errorf("ncm read cover crc: %w", err)
+	bCoverFrameLen := make([]byte, 4)
+	if _, err := io.ReadFull(d.rd, bCoverFrameLen); err != nil {
+		return fmt.Errorf("ncm read cover length: %w", err)
 	}
 
-	bCoverLen := make([]byte, 4) //
+	coverFrameStartOffset, err := d.rd.Seek(0, io.SeekCurrent)
+	if err != nil {
+		return fmt.Errorf("ncm fetch cover frame start offset: %w", err)
+	}
+	coverFrameLen := binary.LittleEndian.Uint32(bCoverFrameLen)
+
+	bCoverLen := make([]byte, 4)
 	if _, err := io.ReadFull(d.rd, bCoverLen); err != nil {
 		return fmt.Errorf("ncm read cover length: %w", err)
 	}
@@ -166,7 +172,10 @@ func (d *Decoder) readCoverData() error {
 	}
 	d.cover = coverBuf
 
-	return nil
+	offsetAudioData := coverFrameStartOffset + int64(coverFrameLen) + 4
+	_, err = d.rd.Seek(offsetAudioData, io.SeekStart)
+
+	return err
 }
 
 func (d *Decoder) parseMeta() error {

algo/qmc/key_mmkv.go

@@ -80,6 +80,39 @@ func readKeyFromMMKV(file string, logger *zap.Logger) ([]byte, error) {
 	return deriveKey(buf)
 }
 
+func OpenMMKV(mmkvPath string, key string, logger *zap.Logger) error {
+	filePath, fileName := filepath.Split(mmkvPath)
+	mgr, err := mmkv.NewManager(filepath.Dir(filePath))
+	if err != nil {
+		return fmt.Errorf("init mmkv manager: %w", err)
+	}
+
+	// If `vaultKey` is empty, the key is ignored.
+	streamKeyVault, err = mgr.OpenVaultCrypto(fileName, key)
+
+	if err != nil {
+		return fmt.Errorf("open mmkv vault: %w", err)
+	}
+
+	logger.Debug("mmkv vault opened", zap.Strings("keys", streamKeyVault.Keys()))
+	return nil
+}
+
+// /
+func readKeyFromMMKVCustom(mid string) ([]byte, error) {
+	if streamKeyVault == nil {
+		return nil, fmt.Errorf("mmkv vault not loaded")
+	}
+
+	// get ekey from mmkv vault
+	eKey, err := streamKeyVault.GetBytes(mid)
+	if err != nil {
+		return nil, fmt.Errorf("get eKey error: %w", err)
+	}
+	return deriveKey(eKey)
+}
+
+// / 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 {
@@ -102,7 +135,7 @@ func getDefaultMMKVDir() (string, error) {
 
 	mmkvDir := filepath.Join(
 		homeDir,
-		"Library/Containers/com.tencent.QQMusicMac/Data", // todo: make configurable
+		"Library/Containers/com.tencent.QQMusicMac/Data",
 		"Library/Application Support/QQMusicMac/mmkv",
 	)
 	if _, err := os.Stat(mmkvDir); err != nil {

algo/qmc/qmc.go

@@ -5,13 +5,12 @@ import (
 	"encoding/binary"
 	"errors"
 	"fmt"
+	"go.uber.org/zap"
 	"io"
 	"runtime"
 	"strconv"
 	"strings"
 
-	"go.uber.org/zap"
-
 	"unlock-music.dev/cli/algo/common"
 	"unlock-music.dev/cli/internal/sniff"
 )
@@ -145,6 +144,17 @@ func (d *Decoder) searchKey() (err error) {
 		return d.readRawMetaQTag()
 	case "STag":
 		return errors.New("qmc: file with 'STag' suffix doesn't contains media key")
+	case "cex\x00":
+		footer, err := NewMusicExTag(d.raw)
+		if err != nil {
+			return err
+		}
+		d.audioLen = fileSize - int(footer.TagSize)
+		d.decodedKey, err = readKeyFromMMKVCustom(footer.MediaFileName)
+		if err != nil {
+			return err
+		}
+		return nil
 	default:
 		size := binary.LittleEndian.Uint32(suffixBuf)
 
@@ -244,12 +254,20 @@ func init() {
 		"6d3461",   //QQ Music Weiyun M4a
 		"776176",   //QQ Music Weiyun Wav
 
-		"mgg", "mgg1", "mggl", //QQ Music New Ogg
-		"mflac", "mflac0", "mflach", //QQ Music New Flac
-
 		"mmp4", // QQ Music MP4 Container, tipically used for Dolby EAC3 stream
 	}
 	for _, ext := range supportedExts {
 		common.RegisterDecoder(ext, false, NewDecoder)
 	}
+
+	// New ogg/flac:
+	extraExtsCanHaveSuffix := []string{"mgg", "mflac"}
+	// Mac also adds some extra suffix to ext:
+	extraExtSuffix := []string{"0", "1", "a", "h", "l"}
+	for _, ext := range extraExtsCanHaveSuffix {
+		common.RegisterDecoder(ext, false, NewDecoder)
+		for _, suffix := range extraExtSuffix {
+			common.RegisterDecoder(ext+suffix, false, NewDecoder)
+		}
+	}
 }

algo/qmc/qmc_footer_musicex.go

@@ -0,0 +1,93 @@
+package qmc
+
+import (
+	bytes "bytes"
+	"encoding/binary"
+	"errors"
+	"fmt"
+	"io"
+	"strings"
+)
+
+type MusicExTagV1 struct {
+	SongID        uint32 // Song ID
+	Unknown1      uint32 // unused & unknown
+	Unknown2      uint32 // unused & unknown
+	MediaID       string // Media ID
+	MediaFileName string // real file name
+	Unknown3      uint32 // unused; uninitialized memory?
+
+	// 16 byte at the end of tag.
+	// TagSize should be respected when parsing.
+	TagSize    uint32 // 19.57: fixed value: 0xC0
+	TagVersion uint32 // 19.57: fixed value: 0x01
+	TagMagic   []byte // fixed value "musicex\0" (8 bytes)
+}
+
+func NewMusicExTag(f io.ReadSeeker) (*MusicExTagV1, error) {
+	_, err := f.Seek(-16, io.SeekEnd)
+	if err != nil {
+		return nil, fmt.Errorf("musicex seek error: %w", err)
+	}
+
+	buffer := make([]byte, 16)
+	bytesRead, err := f.Read(buffer)
+	if err != nil {
+		return nil, fmt.Errorf("get musicex error: %w", err)
+	}
+	if bytesRead != 16 {
+		return nil, fmt.Errorf("MusicExV1: read %d bytes (expected %d)", bytesRead, 16)
+	}
+
+	tag := &MusicExTagV1{
+		TagSize:    binary.LittleEndian.Uint32(buffer[0x00:0x04]),
+		TagVersion: binary.LittleEndian.Uint32(buffer[0x04:0x08]),
+		TagMagic:   buffer[0x04:0x0C],
+	}
+
+	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))
+	}
+
+	if tag.TagSize < 0xC0 {
+		return nil, errors.New(fmt.Sprintf("unsupported musicex tag size. expecting at least 0xC0, got 0x%02x", tag.TagSize))
+	}
+
+	buffer = make([]byte, tag.TagSize)
+	bytesRead, err = f.Read(buffer)
+	if err != nil {
+		return nil, err
+	}
+	if uint32(bytesRead) != tag.TagSize {
+		return nil, fmt.Errorf("MusicExV1: read %d bytes (expected %d)", bytesRead, tag.TagSize)
+	}
+
+	tag.SongID = binary.LittleEndian.Uint32(buffer[0x00:0x04])
+	tag.Unknown1 = binary.LittleEndian.Uint32(buffer[0x04:0x08])
+	tag.Unknown2 = binary.LittleEndian.Uint32(buffer[0x08:0x0C])
+	tag.MediaID = readUnicodeTagName(buffer[0x0C:], 30*2)
+	tag.MediaFileName = readUnicodeTagName(buffer[0x48:], 50*2)
+	tag.Unknown3 = binary.LittleEndian.Uint32(buffer[0xAC:0xB0])
+	return tag, nil
+}
+
+// readUnicodeTagName reads a buffer to maxLen.
+// reconstruct text by skipping alternate char (ascii chars encoded in UTF-16-LE),
+// until finding a zero or reaching maxLen.
+func readUnicodeTagName(buffer []byte, maxLen int) string {
+	builder := strings.Builder{}
+
+	for i := 0; i < maxLen; i += 2 {
+		chr := buffer[i]
+		if chr != 0 {
+			builder.WriteByte(chr)
+		} else {
+			break
+		}
+	}
+
+	return builder.String()
+}

cmd/um/main.go

@@ -23,7 +23,7 @@ import (
 	_ "unlock-music.dev/cli/algo/kgm"
 	_ "unlock-music.dev/cli/algo/kwm"
 	_ "unlock-music.dev/cli/algo/ncm"
-	_ "unlock-music.dev/cli/algo/qmc"
+	"unlock-music.dev/cli/algo/qmc"
 	_ "unlock-music.dev/cli/algo/tm"
 	_ "unlock-music.dev/cli/algo/xiami"
 	_ "unlock-music.dev/cli/algo/ximalaya"
@@ -33,7 +33,7 @@ import (
 	"unlock-music.dev/cli/internal/utils"
 )
 
-var AppVersion = "v0.0.6"
+var AppVersion = "v0.2.2"
 
 var logger, _ = logging.NewZapLogger() // TODO: inject logger to application, instead of using global logger
 
@@ -50,6 +50,8 @@ func main() {
 		Flags: []cli.Flag{
 			&cli.StringFlag{Name: "input", Aliases: []string{"i"}, Usage: "path to input file or dir", Required: false},
 			&cli.StringFlag{Name: "output", Aliases: []string{"o"}, Usage: "path to output dir", Required: false},
+			&cli.StringFlag{Name: "qmc-mmkv", Aliases: []string{"db"}, Usage: "path to qmc mmkv (.crc file also required)", Required: false},
+			&cli.StringFlag{Name: "qmc-mmkv-key", Aliases: []string{"key"}, Usage: "mmkv password (16 ascii chars)", Required: false},
 			&cli.BoolFlag{Name: "remove-source", Aliases: []string{"rs"}, Usage: "remove source file", Required: false, Value: false},
 			&cli.BoolFlag{Name: "skip-noop", Aliases: []string{"n"}, Usage: "skip noop decoder", Required: false, Value: true},
 			&cli.BoolFlag{Name: "update-metadata", Usage: "update metadata & album art from network", Required: false, Value: false},
@@ -130,6 +132,15 @@ func appMain(c *cli.Context) (err error) {
 		return errors.New("output should be a writable directory")
 	}
 
+	if mmkv := c.String("qmc-mmkv"); mmkv != "" {
+		// If key is not set, the mmkv vault will be treated as unencrypted.
+		key := c.String("qmc-mmkv-key")
+		err := qmc.OpenMMKV(mmkv, key, logger)
+		if err != nil {
+			return err
+		}
+	}
+
 	proc := &processor{
 		outputDir:       output,
 		skipNoopDecoder: c.Bool("skip-noop"),
@@ -243,7 +254,20 @@ func (p *processor) processFile(filePath string) error {
 	if len(allDec) == 0 {
 		logger.Fatal("skipping while no suitable decoder")
 	}
-	return p.process(filePath, allDec)
+
+	if err := p.process(filePath, allDec); err != nil {
+		return err
+	}
+
+	// if source file need to be removed
+	if p.removeSource {
+		err := os.RemoveAll(filePath)
+		if err != nil {
+			return err
+		}
+		logger.Info("source file removed after success conversion", zap.String("source", filePath))
+	}
+	return nil
 }
 
 func (p *processor) process(inputFile string, allDec []common.NewDecoderFunc) error {
@@ -352,8 +376,6 @@ func (p *processor) process(inputFile string, allDec []common.NewDecoderFunc) er
 		if _, err := io.Copy(outFile, audio); err != nil {
 			return err
 		}
-		outFile.Close()
-
 	} else {
 		ctx, cancel := context.WithTimeout(context.Background(), time.Minute)
 		defer cancel()
@@ -363,16 +385,6 @@ func (p *processor) process(inputFile string, allDec []common.NewDecoderFunc) er
 		}
 	}
 
-	// if source file need to be removed
-	if p.removeSource {
-		err := os.RemoveAll(inputFile)
-		if err != nil {
-			return err
-		}
-		logger.Info("successfully converted, and source file is removed", zap.String("source", inputFile), zap.String("destination", outPath))
-	} else {
-		logger.Info("successfully converted", zap.String("source", inputFile), zap.String("destination", outPath))
-	}
-
+	logger.Info("successfully converted", zap.String("source", inputFile), zap.String("destination", outPath))
 	return nil
 }

go.mod

@@ -10,10 +10,10 @@ require (
 	github.com/samber/lo v1.39.0
 	github.com/urfave/cli/v2 v2.27.1
 	go.uber.org/zap v1.27.0
-	golang.org/x/crypto v0.22.0
+	golang.org/x/crypto v0.26.0
 	golang.org/x/exp v0.0.0-20240416160154-fe59bbe5cc7f
-	golang.org/x/text v0.14.0
-	unlock-music.dev/mmkv v0.0.0-20240424090133-0953e6901f3a
+	golang.org/x/text v0.17.0
+	unlock-music.dev/mmkv v0.0.0-20240424090133-31549c6a948b
 )
 
 require (
@@ -21,6 +21,6 @@ require (
 	github.com/russross/blackfriday/v2 v2.1.0 // indirect
 	github.com/xrash/smetrics v0.0.0-20240312152122-5f08fbb34913 // indirect
 	go.uber.org/multierr v1.11.0 // indirect
-	golang.org/x/sys v0.19.0 // indirect
+	golang.org/x/sys v0.23.0 // indirect
 	google.golang.org/protobuf v1.33.0 // indirect
 )

go.sum

@@ -26,14 +26,22 @@ go.uber.org/zap v1.27.0 h1:aJMhYGrd5QSmlpLMr2MftRKl7t8J8PTZPA732ud/XR8=
 go.uber.org/zap v1.27.0/go.mod h1:GB2qFLM7cTU87MWRP2mPIjqfIDnGu+VIO4V/SdhGo2E=
 golang.org/x/crypto v0.22.0 h1:g1v0xeRhjcugydODzvb3mEM9SQ0HGp9s/nh3COQ/C30=
 golang.org/x/crypto v0.22.0/go.mod h1:vr6Su+7cTlO45qkww3VDJlzDn0ctJvRgYbC2NvXHt+M=
+golang.org/x/crypto v0.26.0 h1:RrRspgV4mU+YwB4FYnuBoKsUapNIL5cohGAmSH3azsw=
+golang.org/x/crypto v0.26.0/go.mod h1:GY7jblb9wI+FOo5y8/S2oY4zWP07AkOJ4+jxCqdqn54=
 golang.org/x/exp v0.0.0-20240416160154-fe59bbe5cc7f h1:99ci1mjWVBWwJiEKYY6jWa4d2nTQVIEhZIptnrVb1XY=
 golang.org/x/exp v0.0.0-20240416160154-fe59bbe5cc7f/go.mod h1:/lliqkxwWAhPjf5oSOIJup2XcqJaw8RGS6k3TGEc7GI=
 golang.org/x/sys v0.19.0 h1:q5f1RH2jigJ1MoAWp2KTp3gm5zAGFUTarQZ5U386+4o=
 golang.org/x/sys v0.19.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
+golang.org/x/sys v0.23.0 h1:YfKFowiIMvtgl1UERQoTPPToxltDeZfbj4H7dVUCwmM=
+golang.org/x/sys v0.23.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
 golang.org/x/text v0.14.0 h1:ScX5w1eTa3QqT8oi6+ziP7dTV1S2+ALU0bI+0zXKWiQ=
 golang.org/x/text v0.14.0/go.mod h1:18ZOQIKpY8NJVqYksKHtTdi31H5itFRjB5/qKTNYzSU=
+golang.org/x/text v0.17.0 h1:XtiM5bkSOt+ewxlOE/aE/AKEHibwj/6gvWMl9Rsh0Qc=
+golang.org/x/text v0.17.0/go.mod h1:BuEKDfySbSR4drPmRPG/7iBdf8hvFMuRexcpahXilzY=
 google.golang.org/protobuf v1.33.0 h1:uNO2rsAINq/JlFpSdYEKIZ0uKD/R9cpdv0T+yoGwGmI=
 google.golang.org/protobuf v1.33.0/go.mod h1:c6P6GXX6sHbq/GpV6MGZEdwhWPcYBgnhAHhKbcUYpos=
 gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
 unlock-music.dev/mmkv v0.0.0-20240424090133-0953e6901f3a h1:UW0sxgwsfGGC/SrKvvAbZ4HZyOQ3fqs8qr3lBxG6Fzo=
 unlock-music.dev/mmkv v0.0.0-20240424090133-0953e6901f3a/go.mod h1:qr34SM3x8xRxyUfGzefH/rSi+DUXkQZcSfXY/yfuTeo=
+unlock-music.dev/mmkv v0.0.0-20240424090133-31549c6a948b h1:VIJ0mDqj0OgX1ZvL9gbAH8kkqyrDlpVt5yUeGYSJ1/s=
+unlock-music.dev/mmkv v0.0.0-20240424090133-31549c6a948b/go.mod h1:qr34SM3x8xRxyUfGzefH/rSi+DUXkQZcSfXY/yfuTeo=