private void ValidateIfMatch()
{
var headers = _context.Request.Headers;
if (headers.ContainsKey(HeaderNames.IfMatch))
{
var ifMatch = headers[HeaderNames.IfMatch].ToString().Trim();
if (!ifMatch.Equals(ETag.Create(_file).Value))
{
throw new PreconditionFailedException(HeaderNames.IfMatch);
}
}
}
private void AddFileContentHeaders(ETag etag)
{
//
// Content Type
string type = null;
if (!MimeMaps.TryGetContentType(Path.GetExtension(_file.Name), out type))
{
type = "application/octet-stream";
}
_context.Response.ContentType = type;
//
// Content-Disposition (file name)
_context.Response.Headers.SetContentDisposition(false, _file.Name);
//
// Accept Ranges
_context.Response.Headers.Add(HeaderNames.AcceptRanges, "bytes");
//
// Last Modified
_context.Response.Headers.Add(HeaderNames.LastModified, _file.LastModified.ToUniversalTime().ToString("r"));
//
// ETag
_context.Response.Headers.Add(HeaderNames.ETag, etag.Value);
if (IsCachedIfModifiedSince())
{
//
// Date
if (!_context.Response.Headers.ContainsKey(HeaderNames.Date))
{
_context.Response.Headers.Add(HeaderNames.Date, DateTime.UtcNow.ToString());
}
}
SetCustomHeaders();
}
//
// Accept parent to optimize serialization performance
private object FileToJsonModel(IFileInfo info, Fields fields = null, bool full = true, IFileInfo parent = null)
{
if (fields == null)
{
fields = Fields.All;
}
dynamic obj = new ExpandoObject();
var fileId = FileId.FromPhysicalPath(info.Path);
bool? exists = null;
//
// name
if (fields.Exists("name"))
{
obj.name = info.Name;
}
//
// id
if (fields.Exists("id"))
{
obj.id = fileId.Uuid;
}
//
// alias
if (fields.Exists("alias"))
{
foreach (var location in _fileProvider.Options.Locations)
{
if (location.Path.TrimEnd(PathUtil.SEPARATORS).Equals(info.Path.TrimEnd(PathUtil.SEPARATORS), StringComparison.OrdinalIgnoreCase))
{
obj.alias = location.Alias;
break;
}
}
}
//
// type
if (fields.Exists("type"))
{
obj.type = Enum.GetName(typeof(FileType), FileType.File).ToLower();
}
//
// physical_path
if (fields.Exists("physical_path"))
{
obj.physical_path = info.Path;
}
//
// exists
if (fields.Exists("exists"))
{
exists = exists ?? info.Exists;
obj.exists = exists.Value;
}
//
// size
if (fields.Exists("size"))
{
exists = exists ?? info.Exists;
obj.size = exists.Value ? info.Size : 0;
}
//
// created
if (fields.Exists("created"))
{
exists = exists ?? info.Exists;
obj.created = exists.Value ? (object)info.Created.ToUniversalTime() : null;
}
//
// last_modified
if (fields.Exists("last_modified"))
{
exists = exists ?? info.Exists;
obj.last_modified = exists.Value ? (object)info.LastModified.ToUniversalTime() : null;
}
//
// last_access
if (fields.Exists("last_access"))
{
exists = exists ?? info.Exists;
obj.last_access = exists.Value ? (object)info.LastAccessed.ToUniversalTime() : null;
}
//
// mime_type
if (fields.Exists("mime_type"))
{
string type = null;
HttpFileHandler.MimeMaps.TryGetContentType(info.Path, out type);
obj.mime_type = type;
}
//
// e_tag
if (fields.Exists("e_tag"))
{
exists = exists ?? info.Exists;
obj.e_tag = exists.Value ? ETag.Create(info).Value : null;
}
//
// parent
if (fields.Exists("parent"))
{
obj.parent = parent != null?DirectoryToJsonModelRef(parent, fields.Filter("parent")) : GetParentJsonModelRef(info.Path, fields.Filter("parent"));
}
//
// claims
if (fields.Exists("claims"))
{
obj.claims = info.Claims;
}
return(Core.Environment.Hal.Apply(Defines.FilesResource.Guid, obj, full));
}
public async Task PutFileContent()
{
_service.EnsureAccess(_file.Path, FileAccess.Write);
int start, finish, outOf;
var etag = ETag.Create(_file);
ValidateIfMatch();
ValidateIfNoneMatch(etag);
ValidateIfUnmodifiedSince();
ValidateContentRange(out start, out finish, out outOf);
IFileInfo tempFile = CreateTempFile(_file.Path);
try {
using (var temp = _service.GetFileStream(tempFile, FileMode.Open, FileAccess.ReadWrite, FileShare.Read)) {
//
// Write to temp file
await _context.Request.Body.CopyToAsync(temp);
temp.Flush();
temp.Seek(0, SeekOrigin.Begin);
//
// Copy from temp
using (var real = TryOpenFile(_file, FileMode.Open, FileAccess.Write, FileShare.Read)) {
if (start >= 0)
{
//
// Range request
real.Seek(start, SeekOrigin.Begin);
}
await temp.CopyToAsync(real);
// Truncate content-range
if (finish > 0 && finish == outOf - 1)
{
real.SetLength(outOf);
}
// Truncate full content
if (start == -1)
{
real.SetLength(temp.Length);
}
//
// https://github.com/dotnet/corefx/blob/ec2a6190efa743ab600317f44d757433e44e859b/src/System.IO.FileSystem/src/System/IO/FileStream.Win32.cs#L1687
// Unlike Flush(), FlushAsync() always flushes to disk. This is intentional.
real.Flush();
}
}
}
catch (IndexOutOfRangeException) {
throw new ApiArgumentException(HeaderNames.ContentLength);
}
finally {
_service.Delete(tempFile);
}
_context.Response.StatusCode = (int)HttpStatusCode.OK;
}
private object FileToJsonModel(IFileInfo info, Fields fields = null, bool full = true)
{
if (fields == null)
{
fields = Fields.All;
}
dynamic obj = new ExpandoObject();
var fileId = FileId.FromPhysicalPath(info.Path);
bool? exists = null;
//
// name
if (fields.Exists("name"))
{
obj.name = info.Name;
}
//
// id
if (fields.Exists("id"))
{
obj.id = fileId.Uuid;
}
//
// type
if (fields.Exists("type"))
{
obj.type = Enum.GetName(typeof(FileType), FileType.File).ToLower();
}
//
// physical_path
if (fields.Exists("physical_path"))
{
obj.physical_path = info.Path;
}
//
// exists
if (fields.Exists("exists"))
{
exists = exists ?? info.Exists;
obj.exists = exists.Value;
}
//
// size
if (fields.Exists("size"))
{
exists = exists ?? info.Exists;
obj.size = exists.Value ? info.Size : 0;
}
//
// created
if (fields.Exists("created"))
{
exists = exists ?? info.Exists;
obj.created = exists.Value ? (object)info.Created.ToUniversalTime() : null;
}
//
// last_modified
if (fields.Exists("last_modified"))
{
exists = exists ?? info.Exists;
obj.last_modified = exists.Value ? (object)info.LastModified.ToUniversalTime() : null;
}
//
// last_access
if (fields.Exists("last_access"))
{
exists = exists ?? info.Exists;
obj.last_access = exists.Value ? (object)info.LastAccessed.ToUniversalTime() : null;
}
//
// e_tag
if (fields.Exists("e_tag"))
{
exists = exists ?? info.Exists;
obj.e_tag = exists.Value ? ETag.Create(info).Value : null;
}
//
// parent
if (fields.Exists("parent"))
{
obj.parent = GetParentJsonModelRef(info.Path, fields.Filter("parent"));
}
//
// claims
if (fields.Exists("claims"))
{
obj.claims = _fileProvider.GetClaims(info.Path);
}
return(Core.Environment.Hal.Apply(Defines.FilesResource.Guid, obj, full));
}
