public Stream Download(string clientDescription, WebMediaType type, int?provider, string itemId, long?position)
{
// validate source first
MediaSource source = new MediaSource(type, provider, itemId);
if (!source.Exists)
{
throw new FileNotFoundException();
}
// create context
DownloadContext context = new DownloadContext()
{
ClientDescription = clientDescription,
Source = source,
StartTime = DateTime.Now,
Stream = new ReadTrackingStreamWrapper(source.Retrieve()),
MediaInfo = MediaInfoHelper.LoadMediaInfoOrSurrogate(source) // for playerposition view
};
// seek to start position if wanted/needed
if (position != null && position > 0)
{
if (context.Stream.CanSeek)
{
context.Stream.Seek(position.Value, SeekOrigin.Begin);
}
else
{
Log.Warn("Download: Cannot seek on stream, failed to set start position to {0}", position);
}
}
// see comment in Streaming.cs:151
string realIp = WCFUtil.GetHeaderValue("forwardedFor", "X-Forwarded-For");
context.ClientIP = realIp == null?WCFUtil.GetClientIPAddress() : String.Format("{0} (via {1})", realIp, WCFUtil.GetClientIPAddress());
// set headers for downloading
WCFUtil.AddHeader("Content-Disposition", "attachment; filename=\"" + source.GetFileInfo().Name + "\"");
if (source.MediaType != WebMediaType.TV)
{
WCFUtil.SetContentLength(source.GetFileInfo().Size);
}
// FIXME: there has to be a better way to do this
string mime = MIME.GetFromFilename(source.GetFileInfo().Name);
if (mime != null)
{
WCFUtil.SetContentType(mime);
}
// finally, save the context and return
runningDownloads.Add(context);
return(context.Stream);
}
public Stream Download(string clientDescription, WebMediaType type, int? provider, string itemId, long? position)
{
// validate source first
MediaSource source = new MediaSource(type, provider, itemId);
if (!source.Exists)
{
throw new FileNotFoundException();
}
// create context
DownloadContext context = new DownloadContext()
{
ClientDescription = clientDescription,
Source = source,
StartTime = DateTime.Now,
Stream = new ReadTrackingStreamWrapper(source.Retrieve()),
MediaInfo = MediaInfoHelper.LoadMediaInfoOrSurrogate(source) // for playerposition view
};
// seek to start position if wanted/needed
if (position != null && position > 0)
{
if (context.Stream.CanSeek)
{
context.Stream.Seek(position.Value, SeekOrigin.Begin);
}
else
{
Log.Warn("Download: Cannot seek on stream, failed to set start position to {0}", position);
}
}
// see comment in Streaming.cs:151
string realIp = WCFUtil.GetHeaderValue("forwardedFor", "X-Forwarded-For");
context.ClientIP = realIp == null ? WCFUtil.GetClientIPAddress() : String.Format("{0} (via {1})", realIp, WCFUtil.GetClientIPAddress());
// set headers for downloading
WCFUtil.AddHeader("Content-Disposition", "attachment; filename=\"" + source.GetFileInfo().Name + "\"");
if (source.MediaType != WebMediaType.TV)
WCFUtil.SetContentLength(source.GetFileInfo().Size);
// FIXME: there has to be a better way to do this
string mime = MIME.GetFromFilename(source.GetFileInfo().Name);
if (mime != null)
{
WCFUtil.SetContentType(mime);
}
// finally, save the context and return
runningDownloads.Add(context);
return context.Stream;
}
public static WebMediaInfo GetMediaInfo(MediaSource source)
{
// Timeshiftings are a special case, as they can't be cached and need an additional path resolving step
if (source.MediaType == WebMediaType.TV)
{
if (tvCache.ContainsKey(source.Id) && DateTime.Now - tvCache[source.Id].Item1 > TimeSpan.FromSeconds(60))
return tvCache[source.Id].Item2;
TsBuffer tsBuffer = new TsBuffer(source.Id);
Log.Debug("Using path {0} from TS buffer {1} as source for {2}", tsBuffer.GetCurrentFilePath(), source.Id, source.GetDebugName());
WebMediaInfo info = LoadMediaInfo(tsBuffer.GetCurrentFilePath());
tvCache[source.Id] = new Tuple<DateTime, WebMediaInfo>(DateTime.Now, info);
return info;
}
using (var context = source.CreateNetworkContext())
{
// verify the file actually exists and is accessible over the local file system
if (!source.Exists)
{
Log.Warn("Trying to load MediaInfo for {0}, which does not exist or is inaccessible", source.GetDebugName());
return null;
}
else if (!source.SupportsDirectAccess)
{
Log.Warn("Loading MediaInfo for non-direct access source {0} isn't supported yet", source.GetDebugName());
return null;
}
// if we got the file in the cache, return it if we have it and the file hasn't been changed
var fileInfo = source.GetFileInfo();
if (source.MediaType != WebMediaType.TV && persistentCache.HasForSource(source))
{
var cachedItem = persistentCache.GetForSource(source);
if (cachedItem.Size == fileInfo.Size && cachedItem.CachedDate >= fileInfo.LastModifiedTime)
return cachedItem.Info;
}
var info = LoadMediaInfo(context.RewritePath(source.GetPath()));
if (info != null)
persistentCache.Save(source, new CachedInfoWrapper(info, fileInfo));
return info;
}
}
public static Stream ExtractImage(MediaSource source, long position, int?maxWidth, int?maxHeight, string borders, string format)
{
if (!source.Exists)
{
Log.Warn("ExtractImage: Source {0} (resolved to path {1}) doesn't exists", source.GetDebugName(), source.GetPath());
WCFUtil.SetResponseCode(System.Net.HttpStatusCode.NotFound);
return(Stream.Null);
}
if (!source.SupportsDirectAccess)
{
Log.Warn("ExtractImage: Extracting images from remote sources isn't supported yet", source.MediaType, source.Id);
WCFUtil.SetResponseCode(System.Net.HttpStatusCode.NotImplemented);
return(Stream.Null);
}
// get temporary filename
string filename = String.Format("extract_{0}_{1}.jpg", source.GetUniqueIdentifier(), position);
string tempFile = cache.GetPath(filename);
// maybe it exists in cache, return that then
if (cache.Contains(filename))
{
// if source is newer, cached image needs to be recreated
if (source.GetFileInfo().LastModifiedTime > cache.GetLastModifiedTime(tempFile))
{
cache.Invalidate(filename);
}
else
{
return(StreamPostprocessedImage(new ImageMediaSource(tempFile), maxWidth, maxHeight, borders, format));
}
}
// We need to impersonate to access the network drive and check if the thumbnail already exists. However, because
// impersonation is lost when starting a process, we can't start ffmpeg from in here. We need to check whether the
// file is accessible from outside the impersonation context again, and start the ffmpeg process as a different user
// if that is the case.
string fullPath;
using (var context = source.CreateNetworkContext())
{
fullPath = context.RewritePath(source.GetPath());
// stream a pre-existing thumbnail, if possible
if (source.MediaType == WebMediaType.Recording && Path.GetExtension(fullPath).ToLower() == ".ts")
{
var thumbnailFileInfo = new FileInfo(Path.ChangeExtension(fullPath, ".jpg"));
if (thumbnailFileInfo.Exists && thumbnailFileInfo.Length > 0)
{
return(StreamPostprocessedImage(new ImageMediaSource(thumbnailFileInfo.FullName), maxWidth, maxHeight, borders, format));
}
}
}
// finally, extract the image with ffmpeg if everything else has failed
bool extractResult = ExecuteFFMpegExtraction(source, fullPath, position, tempFile);
if (!extractResult)
{
WCFUtil.SetResponseCode(System.Net.HttpStatusCode.InternalServerError);
return(Stream.Null);
}
return(StreamPostprocessedImage(new ImageMediaSource(tempFile), maxWidth, maxHeight, borders, format));
}
public static Stream ExtractImage(MediaSource source, long position, int? maxWidth, int? maxHeight, string borders, string format)
{
if (!source.Exists)
{
Log.Warn("ExtractImage: Source {0} (resolved to path {1}) doesn't exists", source.GetDebugName(), source.GetPath());
WCFUtil.SetResponseCode(System.Net.HttpStatusCode.NotFound);
return Stream.Null;
}
if (!source.SupportsDirectAccess)
{
Log.Warn("ExtractImage: Extracting images from remote sources isn't supported yet", source.MediaType, source.Id);
WCFUtil.SetResponseCode(System.Net.HttpStatusCode.NotImplemented);
return Stream.Null;
}
// get temporary filename
string filename = String.Format("extract_{0}_{1}.jpg", source.GetUniqueIdentifier(), position);
string tempFile = cache.GetPath(filename);
// maybe it exists in cache, return that then
if (cache.Contains(filename))
{
// if source is newer, cached image needs to be recreated
if (source.GetFileInfo().LastModifiedTime > cache.GetLastModifiedTime(tempFile))
{
cache.Invalidate(filename);
}
else
{
return StreamPostprocessedImage(new ImageMediaSource(tempFile), maxWidth, maxHeight, borders, format);
}
}
// We need to impersonate to access the network drive and check if the thumbnail already exists. However, because
// impersonation is lost when starting a process, we can't start ffmpeg from in here. We need to check whether the
// file is accessible from outside the impersonation context again, and start the ffmpeg process as a different user
// if that is the case.
string fullPath;
using (var context = source.CreateNetworkContext())
{
fullPath = context.RewritePath(source.GetPath());
// stream a pre-existing thumbnail, if possible
if (source.MediaType == WebMediaType.Recording && Path.GetExtension(fullPath).ToLower() == ".ts")
{
var thumbnailFileInfo = new FileInfo(Path.ChangeExtension(fullPath, ".jpg"));
if (thumbnailFileInfo.Exists && thumbnailFileInfo.Length > 0)
return StreamPostprocessedImage(new ImageMediaSource(thumbnailFileInfo.FullName), maxWidth, maxHeight, borders, format);
}
}
// finally, extract the image with ffmpeg if everything else has failed
bool extractResult = ExecuteFFMpegExtraction(source, fullPath, position, tempFile);
if (!extractResult)
{
WCFUtil.SetResponseCode(System.Net.HttpStatusCode.InternalServerError);
return Stream.Null;
}
return StreamPostprocessedImage(new ImageMediaSource(tempFile), maxWidth, maxHeight, borders, format);
}
public WebItemSupportStatus GetItemSupportStatus(WebMediaType type, int? provider, string itemId)
{
// check if we actually now about this file
MediaSource source = new MediaSource(type, provider, itemId);
string path = source.GetPath();
if (path == null || path.Length == 0)
{
return new WebItemSupportStatus(false, "Cannot resolve item to a path");
}
// some checks based upon the file info. apparantly people have broken files in their connections
var fileinfo = source.GetFileInfo();
if (!fileinfo.Exists)
{
// add a special warning message for files that are on a network drive, as this often causes problems
Uri uri = new Uri(path);
if (uri.IsUnc && !NetworkInformation.IsLocalAddress(uri.Host))
{
return new WebItemSupportStatus(false, "File is on an inaccessible network share");
}
return new WebItemSupportStatus(false, "File does not exists or is inaccessible");
}
if (fileinfo.Size == 0)
{
return new WebItemSupportStatus(false, "This file has a size of 0KB");
}
// we don't support some things yet
if (path.EndsWith(".IFO"))
{
return new WebItemSupportStatus(false, "Streaming DVD files is not supported");
}
// while corrupt files may work, it's probably a better idea to warn early. check for a valid file using mediainfo
if (MediaInfo.MediaInfoWrapper.GetMediaInfo(source) == null)
{
return new WebItemSupportStatus(false, "This file might be corrupt");
}
return new WebItemSupportStatus() { Supported = true };
}
public Stream GetMediaItem(WebStreamMediaType type, int? provider, string itemId)
{
if (!_authorizedHosts.Contains(WCFUtil.GetClientIPAddress()) && !NetworkInformation.IsLocalAddress(WCFUtil.GetClientIPAddress()))
{
Log.Warn("Host {0} isn't authorized to call GetMediaItem", WCFUtil.GetClientIPAddress());
WCFUtil.SetResponseCode(HttpStatusCode.Unauthorized);
return Stream.Null;
}
MediaSource source = new MediaSource(type, provider, itemId);
try
{
if (!source.Exists)
{
throw new FileNotFoundException();
}
WCFUtil.AddHeader("Content-Disposition", "attachment; filename=\"" + source.GetFileInfo().Name + "\"");
WCFUtil.SetContentLength(source.GetFileInfo().Size);
// there has to be a better way to do this
object mime = RegistryReader.ReadKey(Microsoft.Win32.RegistryHive.ClassesRoot, Path.GetExtension(source.GetFileInfo().Name), "Content Type");
if (mime != null)
{
WCFUtil.SetContentType(mime.ToString());
}
return source.Retrieve();
}
catch (Exception ex)
{
WCFUtil.SetResponseCode(System.Net.HttpStatusCode.NotFound);
Log.Info(String.Format("GetMediaItem() failed for {0}", source.GetDebugName()), ex);
return Stream.Null;
}
}
public Stream GetMediaItem(WebStreamMediaType type, int? provider, string itemId)
{
MediaSource source = new MediaSource(type, provider, itemId);
try
{
if (!source.Exists)
{
throw new FileNotFoundException();
}
WCFUtil.AddHeader("Content-Disposition", "attachment; filename=\"" + source.GetFileInfo().Name + "\"");
// there has to be a better way to do this
object mime = RegistryReader.ReadKey(Microsoft.Win32.RegistryHive.ClassesRoot, Path.GetExtension(source.GetFileInfo().Name), "Content Type");
if (mime != null)
{
WCFUtil.AddHeader("Content-Type", mime.ToString());
}
return source.Retrieve();
}
catch (Exception ex)
{
WCFUtil.SetResponseCode(System.Net.HttpStatusCode.NotFound);
Log.Info(String.Format("GetMediaItem() failed for {0}", source.GetDebugName()), ex);
return Stream.Null;
}
}
