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N_m3u8DL-RE
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优化实时解密判断条件

This commit is contained in:
nilaoda 2022-08-31 00:20:00 +08:00
parent 03c5ab3d74
commit 6e59dfd679
2 changed files with 27 additions and 20 deletions
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2
src/N_m3u8DL-RE/CommandLine/CommandInvoker.cs
View File

@ -291,7 +291,7 @@ namespace N_m3u8DL_RE.CommandLine
public static async Task<int> InvokeArgs(string[] args, Func<MyOption, Task> action) public static async Task<int> InvokeArgs(string[] args, Func<MyOption, Task> action)
{ {
var rootCommand = new RootCommand("N_m3u8DL-RE (Beta version) 20220827") var rootCommand = new RootCommand("N_m3u8DL-RE (Beta version) 20220830")
{ {
Input, TmpDir, SaveDir, SaveName, BaseUrl, ThreadCount, DownloadRetryCount, AutoSelect, SkipMerge, SkipDownload, CheckSegmentsCount, Input, TmpDir, SaveDir, SaveName, BaseUrl, ThreadCount, DownloadRetryCount, AutoSelect, SkipMerge, SkipDownload, CheckSegmentsCount,
BinaryMerge, DelAfterDone, WriteMetaJson, AppendUrlParams, ConcurrentDownload, Headers, /**SavePattern,**/ SubOnly, SubtitleFormat, AutoSubtitleFix, BinaryMerge, DelAfterDone, WriteMetaJson, AppendUrlParams, ConcurrentDownload, Headers, /**SavePattern,**/ SubOnly, SubtitleFormat, AutoSubtitleFix,

21
src/N_m3u8DL-RE/DownloadManager/SimpleDownloadManager.cs
View File

@ -175,7 +175,7 @@ namespace N_m3u8DL_RE.DownloadManager
var path = Path.Combine(tmpDir, "_init.mp4.tmp"); var path = Path.Combine(tmpDir, "_init.mp4.tmp");
var result = await Downloader.DownloadSegmentAsync(streamSpec.Playlist.MediaInit, path, speedContainer, headers); var result = await Downloader.DownloadSegmentAsync(streamSpec.Playlist.MediaInit, path, speedContainer, headers);
FileDic[streamSpec.Playlist.MediaInit] = result; FileDic[streamSpec.Playlist.MediaInit] = result;
if (result == null) if (result == null || !result.Success)
{ {
throw new Exception("Download init file failed!"); throw new Exception("Download init file failed!");
} }
@ -190,7 +190,7 @@ namespace N_m3u8DL_RE.DownloadManager
//从文件读取KEY //从文件读取KEY
await SearchKeyAsync(currentKID); await SearchKeyAsync(currentKID);
//实时解密 //实时解密
if (DownloaderConfig.MyOptions.MP4RealTimeDecryption && streamSpec.Playlist.MediaInit.EncryptInfo.Method == Common.Enum.EncryptMethod.CENC) if (DownloaderConfig.MyOptions.MP4RealTimeDecryption && !string.IsNullOrEmpty(currentKID))
{ {
var enc = result.ActualFilePath; var enc = result.ActualFilePath;
var dec = Path.Combine(Path.GetDirectoryName(enc)!, Path.GetFileNameWithoutExtension(enc) + "_dec" + Path.GetExtension(enc)); var dec = Path.Combine(Path.GetDirectoryName(enc)!, Path.GetFileNameWithoutExtension(enc) + "_dec" + Path.GetExtension(enc));
@ -225,9 +225,12 @@ namespace N_m3u8DL_RE.DownloadManager
var path = Path.Combine(tmpDir, index.ToString(pad) + $".{streamSpec.Extension ?? "clip"}.tmp"); var path = Path.Combine(tmpDir, index.ToString(pad) + $".{streamSpec.Extension ?? "clip"}.tmp");
var result = await Downloader.DownloadSegmentAsync(seg, path, speedContainer, headers); var result = await Downloader.DownloadSegmentAsync(seg, path, speedContainer, headers);
FileDic[seg] = result; FileDic[seg] = result;
if (result == null || !result.Success)
{
throw new Exception("Download first segment failed!");
}
task.Increment(1); task.Increment(1);
//实时解密 if (result != null && result.Success)
if (DownloaderConfig.MyOptions.MP4RealTimeDecryption && seg.EncryptInfo.Method == Common.Enum.EncryptMethod.CENC && result != null)
{ {
//读取init信息 //读取init信息
if (string.IsNullOrEmpty(currentKID)) if (string.IsNullOrEmpty(currentKID))
@ -236,6 +239,9 @@ namespace N_m3u8DL_RE.DownloadManager
} }
//从文件读取KEY //从文件读取KEY
await SearchKeyAsync(currentKID); await SearchKeyAsync(currentKID);
//实时解密
if (DownloaderConfig.MyOptions.MP4RealTimeDecryption && !string.IsNullOrEmpty(currentKID))
{
var enc = result.ActualFilePath; var enc = result.ActualFilePath;
var dec = Path.Combine(Path.GetDirectoryName(enc)!, Path.GetFileNameWithoutExtension(enc) + "_dec" + Path.GetExtension(enc)); 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); var dResult = await MP4DecryptUtil.DecryptAsync(DownloaderConfig.MyOptions.UseShakaPackager, mp4decrypt, DownloaderConfig.MyOptions.Keys, enc, dec, currentKID, mp4InitFile);
@ -252,6 +258,7 @@ namespace N_m3u8DL_RE.DownloadManager
ChangeSpecInfo(streamSpec, mediaInfos, ref useAACFilter); ChangeSpecInfo(streamSpec, mediaInfos, ref useAACFilter);
readInfo = true; readInfo = true;
} }
}
//开始下载 //开始下载
var options = new ParallelOptions() var options = new ParallelOptions()
@ -266,7 +273,7 @@ namespace N_m3u8DL_RE.DownloadManager
FileDic[seg] = result; FileDic[seg] = result;
task.Increment(1); task.Increment(1);
//实时解密 //实时解密
if (DownloaderConfig.MyOptions.MP4RealTimeDecryption && seg.EncryptInfo.Method == Common.Enum.EncryptMethod.CENC && result != null) if (DownloaderConfig.MyOptions.MP4RealTimeDecryption && result != null && result.Success && !string.IsNullOrEmpty(currentKID))
{ {
var enc = result.ActualFilePath; var enc = result.ActualFilePath;
var dec = Path.Combine(Path.GetDirectoryName(enc)!, Path.GetFileNameWithoutExtension(enc) + "_dec" + Path.GetExtension(enc)); var dec = Path.Combine(Path.GetDirectoryName(enc)!, Path.GetFileNameWithoutExtension(enc) + "_dec" + Path.GetExtension(enc));
@ -293,7 +300,7 @@ namespace N_m3u8DL_RE.DownloadManager
Logger.WarnMarkUp($"{Path.GetFileName(output)} => {Path.GetFileName(output = Path.ChangeExtension(output, $"copy" + Path.GetExtension(output)))}"); Logger.WarnMarkUp($"{Path.GetFileName(output)} => {Path.GetFileName(output = Path.ChangeExtension(output, $"copy" + Path.GetExtension(output)))}");
} }
if (DownloaderConfig.MyOptions.MP4RealTimeDecryption && mp4InitFile != "") if (DownloaderConfig.MyOptions.MP4RealTimeDecryption && DownloaderConfig.MyOptions.Keys != null && DownloaderConfig.MyOptions.Keys.Length > 0 && mp4InitFile != "")
{ {
File.Delete(mp4InitFile); File.Delete(mp4InitFile);
//shaka实时解密不需要init文件用于合并 //shaka实时解密不需要init文件用于合并
@ -521,7 +528,7 @@ namespace N_m3u8DL_RE.DownloadManager
} }
//重新读取init信息 //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.CENC) if (mergeSuccess && totalCount >= 1 && string.IsNullOrEmpty(currentKID) && streamSpec.Playlist!.MediaParts.First().MediaSegments.First().EncryptInfo.Method != Common.Enum.EncryptMethod.NONE)
{ {
currentKID = ReadInit(output); currentKID = ReadInit(output);
//从文件读取KEY //从文件读取KEY