/// <summary>
/// Get a file
/// </summary>
/// <param name="context">Context used to locate and return files</param>
public virtual bool GetFile(FileContext context)
{
var fullPath = GetFullPath(context.Request.Uri);
if (fullPath == null || !File.Exists(fullPath))
return false;
var streamPath = fullPath;
if (_substituteGzipFiles && context.Request.Headers["Accept-Encoding"] != null &&
context.Request.Headers["Accept-Encoding"].Contains("gzip"))
{
var compressedPath = fullPath + ".gz";
if (File.Exists(compressedPath))
{
streamPath = compressedPath;
context.SetGzipSubstitute();
}
}
var date = File.GetLastWriteTimeUtc(fullPath);
// browser ignores second fractions.
date = date.AddTicks(-(date.Ticks % TimeSpan.TicksPerSecond));
if (date <= context.BrowserCacheDate)
{
context.SetNotModified(fullPath, date);
return true;
}
var stream = new FileStream(streamPath, FileMode.Open, FileAccess.Read, FileShare.ReadWrite);
context.SetFile(fullPath, stream, date);
return true;
}
/// <summary>
/// Loops through all services and returns the first matching file.
/// </summary>
/// <param name="context">Context used to locate and return files</param>
public virtual bool GetFile(FileContext context)
{
foreach (var fileService in _fileServices)
{
fileService.GetFile(context);
if (context.IsFound)
return true;
}
return false;
}
/// <summary>
/// Get a file
/// </summary>
/// <param name="context">Context used to locate and return files</param>
public virtual bool GetFile(FileContext context)
{
var fullPath = GetFullPath(context.Request.Uri);
if (fullPath == null || !File.Exists(fullPath))
return false;
var date = File.GetLastWriteTimeUtc(fullPath);
if (date <= context.BrowserCacheDate)
{
context.SetNotModified(fullPath, date);
return true;
}
var stream = new FileStream(fullPath, FileMode.Open, FileAccess.Read, FileShare.ReadWrite);
context.SetFile(fullPath, stream, date);
return true;
}
/// <summary>
/// Get a file
/// </summary>
/// <param name="context">Context used to locate and return files</param>
public virtual bool GetFile(FileContext context)
{
var fullPath = GetFullPath(context.Request.Uri);
if (fullPath == null || !File.Exists(fullPath))
return false;
var date = File.GetLastWriteTimeUtc(fullPath);
// browser ignores second fractions.
date = date.AddTicks(-(date.Ticks % TimeSpan.TicksPerSecond));
if (date <= context.BrowserCacheDate)
{
context.SetNotModified(fullPath, date);
return true;
}
var stream = new FileStream(fullPath, FileMode.Open, FileAccess.Read, FileShare.ReadWrite);
context.SetFile(fullPath, stream, date);
return true;
}
/// <summary>
/// Handle the request.
/// </summary>
/// <param name="context">HTTP context</param>
/// <returns><see cref="ModuleResult.Stop"/> will stop all processing except <see cref="IHttpModule.EndRequest"/>.</returns>
/// <remarks>Invoked in turn for all modules unless you return <see cref="ModuleResult.Stop"/>.</remarks>
public ModuleResult HandleRequest(IHttpContext context)
{
// only handle GET and HEAD
if (!context.Request.HttpMethod.Equals("GET", StringComparison.OrdinalIgnoreCase)
&& !context.Request.HttpMethod.Equals("HEAD", StringComparison.OrdinalIgnoreCase))
return ModuleResult.Continue;
// serve a directory
if (AllowFileListing)
{
if (TryGenerateDirectoryPage(context))
return ModuleResult.Stop;
}
var header = context.Request.Headers["If-Modified-Since"];
var time = header != null
? DateTime.ParseExact(header, "R", CultureInfo.InvariantCulture)
: DateTime.MinValue;
var fileContext = new FileContext(context.Request, time);
_fileService.GetFile(fileContext);
if (!fileContext.IsFound)
return ModuleResult.Continue;
if (!fileContext.IsModified)
{
context.Response.StatusCode = (int)HttpStatusCode.NotModified;
context.Response.ReasonPhrase = "Was last modified " + fileContext.LastModifiedAtUtc.ToString("R");
return ModuleResult.Stop;
}
if (fileContext.IsGzipSubstitute)
{
context.Response.AddHeader("Content-Encoding", "gzip");
}
var mimeType = MimeTypeProvider.Instance.Get(fileContext.Filename);
if (mimeType == null)
{
context.Response.StatusCode = (int)HttpStatusCode.UnsupportedMediaType;
context.Response.ReasonPhrase = string.Format("File type '{0}' is not supported.",
Path.GetExtension(fileContext.Filename));
return ModuleResult.Stop;
}
context.Response.AddHeader("Last-Modified", fileContext.LastModifiedAtUtc.ToString("R"));
context.Response.AddHeader("Accept-Ranges", "bytes");
context.Response.AddHeader("Content-Disposition", "inline;filename=\"" + Path.GetFileName(fileContext.Filename) + "\"");
context.Response.ContentType = mimeType;
context.Response.ContentLength = (int)fileContext.FileStream.Length;
// ranged/partial transfers
var rangeStr = context.Request.Headers["Range"];
if (!string.IsNullOrEmpty(rangeStr))
{
var ranges = new RangeCollection();
ranges.Parse(rangeStr, (int)fileContext.FileStream.Length);
context.Response.AddHeader("Content-Range", ranges.ToHtmlHeaderValue((int)fileContext.FileStream.Length));
context.Response.Body = new ByteRangeStream(ranges, fileContext.FileStream);
context.Response.ContentLength = ranges.TotalLength;
context.Response.StatusCode = 206;
}
else
context.Response.Body = fileContext.FileStream;
// do not include a body when the client only want's to get content information.
if (context.Request.HttpMethod.Equals("HEAD", StringComparison.OrdinalIgnoreCase) && context.Response.Body != null)
{
context.Response.Body.Dispose();
context.Response.Body = null;
}
return ModuleResult.Stop;
}
/// <summary>
/// Handle the request.
/// </summary>
/// <param name="context">HTTP context</param>
/// <returns><see cref="ModuleResult.Stop"/> will stop all processing except <see cref="IHttpModule.EndRequest"/>.</returns>
/// <remarks>Invoked in turn for all modules unless you return <see cref="ModuleResult.Stop"/>.</remarks>
public ModuleResult HandleRequest(IHttpContext context)
{
// only handle GET and HEAD
if (!context.Request.HttpMethod.Equals("GET", StringComparison.OrdinalIgnoreCase) &&
!context.Request.HttpMethod.Equals("HEAD", StringComparison.OrdinalIgnoreCase))
{
return(ModuleResult.Continue);
}
// serve a directory
if (AllowFileListing)
{
if (TryGenerateDirectoryPage(context))
{
return(ModuleResult.Stop);
}
}
var header = context.Request.Headers["If-Modified-Since"];
var time = header != null
? DateTime.ParseExact(header, "R", CultureInfo.InvariantCulture)
: DateTime.MinValue;
var fileContext = new FileContext(context.Request, time);
_fileService.GetFile(fileContext);
if (!fileContext.IsFound)
{
return(ModuleResult.Continue);
}
if (!fileContext.IsModified)
{
context.Response.StatusCode = (int)HttpStatusCode.NotModified;
context.Response.ReasonPhrase = "Was last modified " + fileContext.LastModifiedAtUtc.ToString("R");
return(ModuleResult.Stop);
}
if (fileContext.IsGzipSubstitute)
{
context.Response.AddHeader("Content-Encoding", "gzip");
}
var mimeType = MimeTypeProvider.Instance.Get(fileContext.Filename);
if (mimeType == null)
{
context.Response.StatusCode = (int)HttpStatusCode.UnsupportedMediaType;
context.Response.ReasonPhrase = string.Format("File type '{0}' is not supported.",
Path.GetExtension(fileContext.Filename));
return(ModuleResult.Stop);
}
context.Response.AddHeader("Last-Modified", fileContext.LastModifiedAtUtc.ToString("R"));
context.Response.AddHeader("Accept-Ranges", "bytes");
context.Response.AddHeader("Content-Disposition", "inline;filename=\"" + Path.GetFileName(fileContext.Filename) + "\"");
context.Response.ContentType = mimeType;
context.Response.ContentLength = (int)fileContext.FileStream.Length;
// ranged/partial transfers
var rangeStr = context.Request.Headers["Range"];
if (rangeStr != null && rangeStr.Equals("bytes=0-", StringComparison.OrdinalIgnoreCase))
{
rangeStr = ""; //do not create range if everything is wanted.
}
if (!string.IsNullOrEmpty(rangeStr))
{
var ranges = new RangeCollection();
ranges.Parse(rangeStr, (int)fileContext.FileStream.Length);
context.Response.AddHeader("Content-Range", ranges.ToHtmlHeaderValue((int)fileContext.FileStream.Length));
context.Response.Body = new ByteRangeStream(ranges, fileContext.FileStream);
context.Response.ContentLength = ranges.TotalLength;
context.Response.StatusCode = 206;
}
else
{
context.Response.Body = fileContext.FileStream;
}
// do not include a body when the client only want's to get content information.
if (context.Request.HttpMethod.Equals("HEAD", StringComparison.OrdinalIgnoreCase) && context.Response.Body != null)
{
context.Response.Body.Dispose();
context.Response.Body = null;
}
return(ModuleResult.Stop);
}
