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N_m3u8DL-RE
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修复多DRM文件KID读取异常问题 (#422) 

* [Fix] fix reading the kid in a multi-DRM file

* [Fix] fix decrypting multi-drm files

* [Fix] fix glibc error in building

* [Feat] 删除ReadInit方法

* [Fix] 修复ReadMe和more-help中显示参数不准确的问题
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AdiEcho 2024-07-25 01:05:33 +08:00 committed by GitHub
parent 00bce19aea
commit 508f39b649
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GPG Key ID: B5690EEEBB952194
7 changed files with 43 additions and 26 deletions
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1
.github/workflows/build_latest.yml vendored
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@ -20,6 +20,7 @@ on:
env:
DOTNET_SDK_VERSION: "8.0.*"
ACTIONS_ALLOW_USE_UNSECURE_NODE_VERSION: true
jobs:
build-win-x64-arm64:

4
README.md
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@ -141,7 +141,7 @@ More Help:
通过正则表达式选择符合要求的视频流. 你能够以:分隔形式指定如下参数:
id=REGEX:lang=REGEX:name=REGEX:codec=REGEX:res=REGEX:frame=REGEX
id=REGEX:lang=REGEX:name=REGEX:codecs=REGEX:res=REGEX:frame=REGEX
segsMin=number:segsMax=number:ch=REGEX:range=REGEX:url=REGEX
plistDurMin=hms:plistDurMax=hms:for=FOR
@ -151,7 +151,7 @@ plistDurMin=hms:plistDurMax=hms:for=FOR
# 选择最佳视频
-sv best
# 选择4K+HEVC视频
-sv res="3840*":codec=hvc1:for=best
-sv res="3840*":codecs=hvc1:for=best
# 选择长度大于1小时20分钟30秒的视频
-sv plistDurMin="1h20m30s":for=best
```

12
src/N_m3u8DL-RE.Common/Resource/StaticText.cs
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@ -475,7 +475,7 @@ namespace N_m3u8DL_RE.Common.Resource
["cmd_selectVideo_more"] = new TextContainer
(
zhCN: "通过正则表达式选择符合要求的视频流. 你能够以:分隔形式指定如下参数:\r\n\r\n" +
"id=REGEX:lang=REGEX:name=REGEX:codec=REGEX:res=REGEX:frame=REGEX\r\n" +
"id=REGEX:lang=REGEX:name=REGEX:codecs=REGEX:res=REGEX:frame=REGEX\r\n" +
"segsMin=number:segsMax=number:ch=REGEX:range=REGEX:url=REGEX\r\n" +
"plistDurMin=hms:plistDurMax=hms:role=string:for=FOR\r\n\r\n" +
"* for=FOR: 选择方式. best[number], worst[number], all (默认: best)\r\n\r\n" +
@ -483,12 +483,12 @@ namespace N_m3u8DL_RE.Common.Resource
"# 选择最佳视频\r\n" +
"-sv best\r\n" +
"# 选择4K+HEVC视频\r\n" +
"-sv res=\"3840*\":codec=hvc1:for=best\r\n" +
"-sv res=\"3840*\":codecs=hvc1:for=best\r\n" +
"# 选择长度大于1小时20分钟30秒的视频\r\n" +
"-sv plistDurMin=\"1h20m30s\":for=best\r\n" +
"-sv role=\"main\":for:best\r\n",
zhTW: "通過正則表達式選擇符合要求的影片軌. 你能夠以:分隔形式指定如下參數:\r\n\r\n" +
"id=REGEX:lang=REGEX:name=REGEX:codec=REGEX:res=REGEX:frame=REGEX\r\n" +
"id=REGEX:lang=REGEX:name=REGEX:codecs=REGEX:res=REGEX:frame=REGEX\r\n" +
"segsMin=number:segsMax=number:ch=REGEX:range=REGEX:url=REGEX\r\n" +
"plistDurMin=hms:plistDurMax=hms:role=string:for=FOR\r\n\r\n" +
"* for=FOR: 選擇方式. best[number], worst[number], all (默認: best)\r\n\r\n" +
@ -496,12 +496,12 @@ namespace N_m3u8DL_RE.Common.Resource
"# 選擇最佳影片\r\n" +
"-sv best\r\n" +
"# 選擇4K+HEVC影片\r\n" +
"-sv res=\"3840*\":codec=hvc1:for=best\r\n" +
"-sv res=\"3840*\":codecs=hvc1:for=best\r\n" +
"# 選擇長度大於1小時20分鐘30秒的影片\r\n" +
"-sv plistDurMin=\"1h20m30s\":for=best\r\n" +
"-sv role=\"main\":for:best\r\n",
enUS: "Select video streams by regular expressions. OPTIONS is a colon separated list of:\r\n\r\n" +
"id=REGEX:lang=REGEX:name=REGEX:codec=REGEX:res=REGEX:frame=REGEX\r\n" +
"id=REGEX:lang=REGEX:name=REGEX:codecs=REGEX:res=REGEX:frame=REGEX\r\n" +
"segsMin=number:segsMax=number:ch=REGEX:range=REGEX:url=REGEX\r\n" +
"plistDurMin=hms:plistDurMax=hms:role=string:for=FOR\r\n\r\n" +
"* for=FOR: Select type. best[number], worst[number], all (Default: best)\r\n\r\n" +
@ -509,7 +509,7 @@ namespace N_m3u8DL_RE.Common.Resource
"# select best video\r\n" +
"-sv best\r\n" +
"# select 4K+HEVC video\r\n" +
"-sv res=\"3840*\":codec=hvc1:for=best\r\n" +
"-sv res=\"3840*\":codecs=hvc1:for=best\r\n" +
"# Select best video with duration longer than 1 hour 20 minutes 30 seconds\r\n" +
"-sv plistDurMin=\"1h20m30s\":for=best\r\n" +
"-sv role=\"main\":for:best\r\n"

10
src/N_m3u8DL-RE.Parser/Mp4/MP4InitUtil.cs
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@ -8,6 +8,7 @@ namespace Mp4SubtitleParser
public string? PSSH;
public string? KID;
public string? Scheme;
public bool isMultiDRM;
}
public class MP4InitUtil
@ -19,7 +20,6 @@ namespace Mp4SubtitleParser
{
var info = new ParsedMP4Info();
//parse init
new MP4Parser()
.Box("moov", MP4Parser.Children)
@ -36,7 +36,13 @@ namespace Mp4SubtitleParser
if (SYSTEM_ID_WIDEVINE.SequenceEqual(systemId))
{
var dataSize = box.Reader.ReadUInt32();
info.PSSH = Convert.ToBase64String(box.Reader.ReadBytes((int)dataSize));
var psshData = box.Reader.ReadBytes((int)dataSize);
info.PSSH = Convert.ToBase64String(psshData);
if (info.KID == "00000000000000000000000000000000")
{
info.KID = HexUtil.BytesToHex(psshData[2..18]).ToLower();
info.isMultiDRM = true;
}
}
})
.FullBox("encv", MP4Parser.AllData(data => ReadBox(data, info)))

22
src/N_m3u8DL-RE/DownloadManager/SimpleDownloadManager.cs
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@ -76,7 +76,6 @@ namespace N_m3u8DL_RE.DownloadManager
}
}
private async Task<bool> DownloadStreamAsync(StreamSpec streamSpec, ProgressTask task, SpeedContainer speedContainer)
{
speedContainer.ResetVars();
@ -115,6 +114,7 @@ namespace N_m3u8DL_RE.DownloadManager
var mp4InitFile = "";
var currentKID = "";
var readInfo = false; //是否读取过
var mp4Info = new ParsedMP4Info();
//用户自定义范围导致被跳过的时长 计算字幕偏移使用
var skippedDur = streamSpec.SkippedDuration ?? 0d;
@ -167,7 +167,8 @@ namespace N_m3u8DL_RE.DownloadManager
//读取mp4信息
if (result != null && result.Success)
{
currentKID = MP4DecryptUtil.ReadInit(result.ActualFilePath);
mp4Info = MP4DecryptUtil.GetMP4Info(result.ActualFilePath);
currentKID = mp4Info.KID;
// try shaka packager, which can handle WebM
if (string.IsNullOrEmpty(currentKID) && DownloaderConfig.MyOptions.UseShakaPackager) {
currentKID = MP4DecryptUtil.ReadInitShaka(result.ActualFilePath, mp4decrypt);
@ -179,7 +180,7 @@ namespace N_m3u8DL_RE.DownloadManager
{
var enc = result.ActualFilePath;
var dec = Path.Combine(Path.GetDirectoryName(enc)!, Path.GetFileNameWithoutExtension(enc) + "_dec" + Path.GetExtension(enc));
var dResult = await MP4DecryptUtil.DecryptAsync(DownloaderConfig.MyOptions.UseShakaPackager, mp4decrypt, DownloaderConfig.MyOptions.Keys, enc, dec, currentKID);
var dResult = await MP4DecryptUtil.DecryptAsync(DownloaderConfig.MyOptions.UseShakaPackager, mp4decrypt, DownloaderConfig.MyOptions.Keys, enc, dec, currentKID, isMultiDRM: mp4Info.isMultiDRM);
if (dResult)
{
FileDic[streamSpec.Playlist.MediaInit]!.ActualFilePath = dec;
@ -238,7 +239,7 @@ namespace N_m3u8DL_RE.DownloadManager
//读取init信息
if (string.IsNullOrEmpty(currentKID))
{
currentKID = MP4DecryptUtil.ReadInit(result.ActualFilePath);
currentKID = MP4DecryptUtil.GetMP4Info(result.ActualFilePath).KID;
}
// try shaka packager, which can handle WebM
if (string.IsNullOrEmpty(currentKID) && DownloaderConfig.MyOptions.UseShakaPackager) {
@ -251,7 +252,8 @@ namespace N_m3u8DL_RE.DownloadManager
{
var enc = result.ActualFilePath;
var dec = Path.Combine(Path.GetDirectoryName(enc)!, Path.GetFileNameWithoutExtension(enc) + "_dec" + Path.GetExtension(enc));
var dResult = await MP4DecryptUtil.DecryptAsync(DownloaderConfig.MyOptions.UseShakaPackager, mp4decrypt, DownloaderConfig.MyOptions.Keys, enc, dec, currentKID, mp4InitFile);
mp4Info = MP4DecryptUtil.GetMP4Info(enc);
var dResult = await MP4DecryptUtil.DecryptAsync(DownloaderConfig.MyOptions.UseShakaPackager, mp4decrypt, DownloaderConfig.MyOptions.Keys, enc, dec, currentKID, mp4InitFile, isMultiDRM: mp4Info.isMultiDRM);
if (dResult)
{
File.Delete(enc);
@ -288,7 +290,8 @@ namespace N_m3u8DL_RE.DownloadManager
{
var enc = result.ActualFilePath;
var dec = Path.Combine(Path.GetDirectoryName(enc)!, Path.GetFileNameWithoutExtension(enc) + "_dec" + Path.GetExtension(enc));
var dResult = await MP4DecryptUtil.DecryptAsync(DownloaderConfig.MyOptions.UseShakaPackager, mp4decrypt, DownloaderConfig.MyOptions.Keys, enc, dec, currentKID, mp4InitFile);
mp4Info = MP4DecryptUtil.GetMP4Info(enc);
var dResult = await MP4DecryptUtil.DecryptAsync(DownloaderConfig.MyOptions.UseShakaPackager, mp4decrypt, DownloaderConfig.MyOptions.Keys, enc, dec, currentKID, mp4InitFile, isMultiDRM: mp4Info.isMultiDRM);
if (dResult)
{
File.Delete(enc);
@ -584,7 +587,7 @@ namespace N_m3u8DL_RE.DownloadManager
//重新读取init信息
if (mergeSuccess && totalCount >= 1 && string.IsNullOrEmpty(currentKID) && streamSpec.Playlist!.MediaParts.First().MediaSegments.First().EncryptInfo.Method != Common.Enum.EncryptMethod.NONE)
{
currentKID = MP4DecryptUtil.ReadInit(output);
currentKID = MP4DecryptUtil.GetMP4Info(output).KID;
// try shaka packager, which can handle WebM
if (string.IsNullOrEmpty(currentKID) && DownloaderConfig.MyOptions.UseShakaPackager) {
currentKID = MP4DecryptUtil.ReadInitShaka(output, mp4decrypt);
@ -594,12 +597,13 @@ namespace N_m3u8DL_RE.DownloadManager
}
//调用mp4decrypt解密
if (mergeSuccess && File.Exists(output) && !string.IsNullOrEmpty(currentKID) && !DownloaderConfig.MyOptions.MP4RealTimeDecryption && DownloaderConfig.MyOptions.Keys != null && DownloaderConfig.MyOptions.Keys.Length > 0)
if (mergeSuccess && File.Exists(output) && !string.IsNullOrEmpty(currentKID) && !DownloaderConfig.MyOptions.MP4RealTimeDecryption && DownloaderConfig.MyOptions.Keys != null && DownloaderConfig.MyOptions.Keys.Length > 0)
{
var enc = output;
var dec = Path.Combine(Path.GetDirectoryName(enc)!, Path.GetFileNameWithoutExtension(enc) + "_dec" + Path.GetExtension(enc));
mp4Info = MP4DecryptUtil.GetMP4Info(enc);
Logger.InfoMarkUp($"[grey]Decrypting...[/]");
var result = await MP4DecryptUtil.DecryptAsync(DownloaderConfig.MyOptions.UseShakaPackager, mp4decrypt, DownloaderConfig.MyOptions.Keys, enc, dec, currentKID);
var result = await MP4DecryptUtil.DecryptAsync(DownloaderConfig.MyOptions.UseShakaPackager, mp4decrypt, DownloaderConfig.MyOptions.Keys, enc, dec, currentKID, isMultiDRM: mp4Info.isMultiDRM);
if (result)
{
File.Delete(enc);

4
src/N_m3u8DL-RE/DownloadManager/SimpleLiveRecordManager2.cs
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@ -212,7 +212,7 @@ namespace N_m3u8DL_RE.DownloadManager
//读取mp4信息
if (result != null && result.Success)
{
currentKID = MP4DecryptUtil.ReadInit(result.ActualFilePath);
currentKID = MP4DecryptUtil.GetMP4Info(result.ActualFilePath).KID;
//从文件读取KEY
await SearchKeyAsync(currentKID);
//实时解密
@ -290,7 +290,7 @@ namespace N_m3u8DL_RE.DownloadManager
//读取init信息
if (string.IsNullOrEmpty(currentKID))
{
currentKID = MP4DecryptUtil.ReadInit(result.ActualFilePath);
currentKID = MP4DecryptUtil.GetMP4Info(result.ActualFilePath).KID;
}
//从文件读取KEY
await SearchKeyAsync(currentKID);

16
src/N_m3u8DL-RE/Util/MP4DecryptUtil.cs
View File

@ -10,12 +10,18 @@ namespace N_m3u8DL_RE.Util
internal class MP4DecryptUtil
{
private static string ZeroKid = "00000000000000000000000000000000";
public static async Task<bool> DecryptAsync(bool shakaPackager, string bin, string[]? keys, string source, string dest, string? kid, string init = "")
public static async Task<bool> DecryptAsync(bool shakaPackager, string bin, string[]? keys, string source, string dest, string? kid, string init = "", bool isMultiDRM=false)
{
if (keys == null || keys.Length == 0) return false;
string? keyPair = null;
string? trackId = null;
if (isMultiDRM)
{
trackId = "1";
}
if (!string.IsNullOrEmpty(kid))
{
var test = keys.Where(k => k.StartsWith(kid));
@ -127,22 +133,22 @@ namespace N_m3u8DL_RE.Util
return null;
}
public static string? ReadInit(byte[] data)
public static ParsedMP4Info GetMP4Info(byte[] data)
{
var info = MP4InitUtil.ReadInit(data);
if (info.Scheme != null) Logger.WarnMarkUp($"[grey]Type: {info.Scheme}[/]");
if (info.PSSH != null) Logger.WarnMarkUp($"[grey]PSSH(WV): {info.PSSH}[/]");
if (info.KID != null) Logger.WarnMarkUp($"[grey]KID: {info.KID}[/]");
return info.KID;
return info;
}
public static string? ReadInit(string output)
public static ParsedMP4Info GetMP4Info(string output)
{
using (var fs = File.OpenRead(output))
{
var header = new byte[1 * 1024 * 1024]; //1MB
fs.Read(header);
return ReadInit(header);
return GetMP4Info(header);
}
}