feat: mmkv 加密数据库解析
This commit is contained in:
awalol
parent
e504048a30
commit
b7b1240603
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@ -1,17 +1,20 @@
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package qmc
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import (
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"bytes"
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"encoding/base64"
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"errors"
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"fmt"
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"io"
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"os"
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"path/filepath"
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"runtime"
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"git.unlock-music.dev/awalol/go-mmkv"
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"github.com/samber/lo"
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"go.uber.org/zap"
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"golang.org/x/exp/slices"
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"golang.org/x/text/unicode/norm"
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"unlock-music.dev/mmkv"
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)
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var streamKeyVault mmkv.Vault
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@ -80,6 +83,45 @@ func readKeyFromMMKV(file string, logger *zap.Logger) ([]byte, error) {
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return deriveKey(buf)
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}
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func readKeyFromMMKVCustom(d *Decoder) ([]byte, error) {
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logger := d.logger
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filePath, fileName := filepath.Split(VaultPath)
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if streamKeyVault == nil {
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mgr, err := mmkv.NewManager(filepath.Dir(filePath))
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if err != nil {
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return nil, fmt.Errorf("init mmkv manager: %w", err)
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}
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streamKeyVault, err = mgr.OpenVaultCrypto(fileName, VaultKey)
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if err != nil {
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return nil, fmt.Errorf("open mmkv vault: %w", err)
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}
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logger.Debug("mmkv vault opened", zap.Strings("keys", streamKeyVault.Keys()))
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}
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// 获取mid即数据库键值
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_, err := d.raw.Seek(-128, io.SeekEnd)
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if err != nil {
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return nil, fmt.Errorf("get mid error: %w", err)
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}
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mid, err := io.ReadAll(io.LimitReader(d.raw, 64)) // 取64字节确保完全取完
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mid = bytes.ReplaceAll(mid, []byte{0x00}, []byte{}) // clean NUL
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mid = bytes.Trim(mid, "\0000") // maybe a little stupid
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// 从数据库获取eKey
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eKey, err := streamKeyVault.GetBytes(string(mid))
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if err != nil {
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return nil, fmt.Errorf("get eKey error: %w", err)
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}
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n, err := base64.StdEncoding.Decode(eKey, eKey)
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if err != nil {
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return nil, fmt.Errorf("base64 error: %w", err)
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}
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return deriveKeyV1(eKey[:n])
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}
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func getRelativeMMKVDir(file string) (string, error) {
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mmkvDir := filepath.Join(filepath.Dir(file), "../mmkv")
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if _, err := os.Stat(mmkvDir); err != nil {
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@ -16,6 +16,9 @@ import (
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"unlock-music.dev/cli/internal/sniff"
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)
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var VaultPath = ""
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var VaultKey = ""
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type Decoder struct {
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raw io.ReadSeeker // raw is the original file reader
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params *common.DecoderParams
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@ -140,11 +143,32 @@ func (d *Decoder) searchKey() (err error) {
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return err
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}
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switch string(suffixBuf) {
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switch string(bytes.ReplaceAll(suffixBuf, []byte{0x00}, []byte{})) {
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case "QTag":
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return d.readRawMetaQTag()
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case "STag":
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return errors.New("qmc: file with 'STag' suffix doesn't contains media key")
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case "cex":
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d.decodedKey, err = readKeyFromMMKVCustom(d)
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if err == nil {
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suffix := []byte{0x63, 0x65, 0x78, 0x00} // cex
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for i := 0; i <= 3; i++ {
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// 末尾的信息数据每192字节出现一次，故只要循环判断末尾不为musicex时即为歌曲数据
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musicexLen, err := d.raw.Seek(int64(-(192*i)-4), io.SeekEnd)
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if err != nil {
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return fmt.Errorf("get musicexLen error: %w", err)
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}
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buf, err := io.ReadAll(io.LimitReader(d.raw, 4))
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if err != nil {
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return fmt.Errorf("get musicex error: %w", err)
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}
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if !bytes.Equal(buf, suffix) {
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d.audioLen = int(musicexLen) + 4
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return nil
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}
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}
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}
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return err
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default:
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size := binary.LittleEndian.Uint32(suffixBuf)
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@ -5,6 +5,9 @@ import (
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"context"
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"errors"
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"fmt"
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"github.com/fsnotify/fsnotify"
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"github.com/urfave/cli/v2"
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"go.uber.org/zap"
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"io"
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"os"
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"os/signal"
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@ -14,10 +17,7 @@ import (
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"sort"
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"strings"
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"time"
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"github.com/fsnotify/fsnotify"
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"github.com/urfave/cli/v2"
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"go.uber.org/zap"
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"unlock-music.dev/cli/algo/qmc"
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"unlock-music.dev/cli/algo/common"
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_ "unlock-music.dev/cli/algo/kgm"
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@ -50,6 +50,8 @@ func main() {
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Flags: []cli.Flag{
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&cli.StringFlag{Name: "input", Aliases: []string{"i"}, Usage: "path to input file or dir", Required: false},
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&cli.StringFlag{Name: "output", Aliases: []string{"o"}, Usage: "path to output dir", Required: false},
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&cli.StringFlag{Name: "vault-path", Aliases: []string{"db"}, Usage: "数据库文件位置 (请确保crc文件在同目录下)", Required: false},
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&cli.StringFlag{Name: "vault-key", Aliases: []string{"key"}, Usage: "数据库密钥", Required: false},
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&cli.BoolFlag{Name: "remove-source", Aliases: []string{"rs"}, Usage: "remove source file", Required: false, Value: false},
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&cli.BoolFlag{Name: "skip-noop", Aliases: []string{"n"}, Usage: "skip noop decoder", Required: false, Value: true},
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&cli.BoolFlag{Name: "update-metadata", Usage: "update metadata & album art from network", Required: false, Value: false},
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@ -86,6 +88,8 @@ func appMain(c *cli.Context) (err error) {
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printSupportedExtensions()
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return nil
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}
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qmc.VaultPath = c.String("vault-path") // TODO: 更改参数传递方式
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qmc.VaultKey = c.String("vault-key")
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input := c.String("input")
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if input == "" {
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switch c.Args().Len() {
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9
go.mod
9
go.mod
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@ -11,18 +11,19 @@ require (
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github.com/urfave/cli/v2 v2.23.6
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go.uber.org/zap v1.24.0
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golang.org/x/crypto v0.3.0
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golang.org/x/exp v0.0.0-20221205204356-47842c84f3db
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golang.org/x/exp v0.0.0-20240119083558-1b970713d09a
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golang.org/x/text v0.5.0
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unlock-music.dev/mmkv v0.0.0-20221204231432-41a75bd29939
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//unlock-music.dev/mmkv v0.0.0-20221204231432-41a75bd29939
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)
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require (
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git.unlock-music.dev/awalol/go-mmkv v0.1.0 // indirect
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github.com/cpuguy83/go-md2man/v2 v2.0.2 // indirect
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github.com/golang/protobuf v1.5.2 // indirect
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github.com/golang/protobuf v1.5.3 // indirect
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github.com/russross/blackfriday/v2 v2.1.0 // indirect
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github.com/xrash/smetrics v0.0.0-20201216005158-039620a65673 // indirect
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go.uber.org/atomic v1.10.0 // indirect
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go.uber.org/multierr v1.8.0 // indirect
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golang.org/x/sys v0.2.0 // indirect
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google.golang.org/protobuf v1.28.1 // indirect
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google.golang.org/protobuf v1.32.0 // indirect
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)
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8
go.sum
8
go.sum
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@ -1,3 +1,5 @@
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git.unlock-music.dev/awalol/go-mmkv v0.1.0 h1:Ev4buS12RNOUYd99wtE0P7CUIForghsBt0zRpaCnaSU=
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git.unlock-music.dev/awalol/go-mmkv v0.1.0/go.mod h1:aM3nwVQyWkCH424GWxwU5w9JeRLUWNz7HgPxw0lWWOY=
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github.com/benbjohnson/clock v1.1.0 h1:Q92kusRqC1XV2MjkWETPvjJVqKetz1OzxZB7mHJLju8=
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github.com/cpuguy83/go-md2man/v2 v2.0.2 h1:p1EgwI/C7NhT0JmVkwCD2ZBK8j4aeHQX2pMHHBfMQ6w=
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github.com/cpuguy83/go-md2man/v2 v2.0.2/go.mod h1:tgQtvFlXSQOSOSIRvRPT7W67SCa46tRHOmNcaadrF8o=
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@ -17,6 +19,8 @@ github.com/go-flac/go-flac v0.3.1/go.mod h1:jG9IumOfAXr+7J40x0AiQIbJzXf9Y7+Zs/2C
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github.com/golang/protobuf v1.5.0/go.mod h1:FsONVRAS9T7sI+LIUmWTfcYkHO4aIWwzhcaSAoJOfIk=
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github.com/golang/protobuf v1.5.2 h1:ROPKBNFfQgOUMifHyP+KYbvpjbdoFNs+aK7DXlji0Tw=
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github.com/golang/protobuf v1.5.2/go.mod h1:XVQd3VNwM+JqD3oG2Ue2ip4fOMUkwXdXDdiuN0vRsmY=
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github.com/golang/protobuf v1.5.3 h1:KhyjKVUg7Usr/dYsdSqoFveMYd5ko72D+zANwlG1mmg=
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github.com/golang/protobuf v1.5.3/go.mod h1:XVQd3VNwM+JqD3oG2Ue2ip4fOMUkwXdXDdiuN0vRsmY=
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github.com/google/go-cmp v0.2.0/go.mod h1:oXzfMopK8JAjlY9xF4vHSVASa0yLyX7SntLO5aqRK0M=
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github.com/google/go-cmp v0.5.5/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
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github.com/google/go-cmp v0.5.8 h1:e6P7q2lk1O+qJJb4BtCQXlK8vWEO8V1ZeuEdJNOqZyg=
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@ -48,6 +52,8 @@ golang.org/x/crypto v0.3.0 h1:a06MkbcxBrEFc0w0QIZWXrH/9cCX6KJyWbBOIwAn+7A=
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golang.org/x/crypto v0.3.0/go.mod h1:hebNnKkNXi2UzZN1eVRvBB7co0a+JxK6XbPiWVs/3J4=
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golang.org/x/exp v0.0.0-20221205204356-47842c84f3db h1:D/cFflL63o2KSLJIwjlcIt8PR064j/xsmdEJL/YvY/o=
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golang.org/x/exp v0.0.0-20221205204356-47842c84f3db/go.mod h1:CxIveKay+FTh1D0yPZemJVgC/95VzuuOLq5Qi4xnoYc=
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golang.org/x/exp v0.0.0-20240119083558-1b970713d09a h1:Q8/wZp0KX97QFTc2ywcOE0YRjZPVIx+MXInMzdvQqcA=
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golang.org/x/exp v0.0.0-20240119083558-1b970713d09a/go.mod h1:idGWGoKP1toJGkd5/ig9ZLuPcZBC3ewk7SzmH0uou08=
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golang.org/x/sys v0.0.0-20220908164124-27713097b956/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
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golang.org/x/sys v0.2.0 h1:ljd4t30dBnAvMZaQCevtY0xLLD0A+bRZXbgLMLU1F/A=
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golang.org/x/sys v0.2.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
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@ -58,6 +64,8 @@ google.golang.org/protobuf v1.26.0-rc.1/go.mod h1:jlhhOSvTdKEhbULTjvd4ARK9grFBp0
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google.golang.org/protobuf v1.26.0/go.mod h1:9q0QmTI4eRPtz6boOQmLYwt+qCgq0jsYwAQnmE0givc=
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google.golang.org/protobuf v1.28.1 h1:d0NfwRgPtno5B1Wa6L2DAG+KivqkdutMf1UhdNx175w=
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google.golang.org/protobuf v1.28.1/go.mod h1:HV8QOd/L58Z+nl8r43ehVNZIU/HEI6OcFqwMG9pJV4I=
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google.golang.org/protobuf v1.32.0 h1:pPC6BG5ex8PDFnkbrGU3EixyhKcQ2aDuBS36lqK/C7I=
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google.golang.org/protobuf v1.32.0/go.mod h1:c6P6GXX6sHbq/GpV6MGZEdwhWPcYBgnhAHhKbcUYpos=
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gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
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gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
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gopkg.in/yaml.v3 v3.0.0-20210107192922-496545a6307b/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
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