public FontSource (Stream stream)
{
if (stream != null)
wrapper = new StreamWrapper (stream);
else
wrapper = null;
type = FontSourceType.ManagedStream;
}
public void SetSource (Stream stream)
{
if (stream == null)
throw new ArgumentNullException ("stream");
Source = null;
wrapper = new StreamWrapper (stream);
ManagedStreamCallbacks callbacks = wrapper.GetCallbacks ();
NativeMethods.media_element_set_stream_source (this.native, ref callbacks);
}
// note: throwing MoonException from here is NOT ok since this code is called async
// and the exception won't be reported, directly, to the caller
void AssemblyGetResponse (IAsyncResult result)
{
Assembly asm;
object[] tuple = (object []) result.AsyncState;
WebRequest wreq = (WebRequest) tuple [0];
ManifestAssemblyKind kind = (ManifestAssemblyKind) tuple [1];
int error_code = (kind == ManifestAssemblyKind.ExternalAssembly) ? 2152 : 2105;
try {
HttpWebResponse wresp = (HttpWebResponse) wreq.EndGetResponse (result);
if (wresp.StatusCode != HttpStatusCode.OK) {
wresp.Close ();
EmitError (error_code, String.Format ("Error while downloading the '{0}'.", wreq.RequestUri));
return;
}
if ((kind != ManifestAssemblyKind.ExternalAssembly) && (wresp.ResponseUri != wreq.RequestUri)) {
wresp.Close ();
EmitError (error_code, "Redirection not allowed to download assemblies.");
return;
}
using (Stream responseStream = wresp.GetResponseStream ()) {
byte [] buffer = AssemblyPart.StreamToBuffer (responseStream);
if (IsZip (buffer)) {
// unzip it.
using (MemoryStream dest = new MemoryStream ()) {
using (MemoryStream source = new MemoryStream (buffer)) {
ManagedStreamCallbacks source_cb;
ManagedStreamCallbacks dest_cb;
StreamWrapper source_wrapper;
StreamWrapper dest_wrapper;
source_wrapper = new StreamWrapper (source);
dest_wrapper = new StreamWrapper (dest);
source_cb = source_wrapper.GetCallbacks ();
dest_cb = dest_wrapper.GetCallbacks ();
// Zip files may contain multiple assemblies, all of which need to be loaded. Keep
// attempting to open subsequent files until it fails.
for (int i = 0; ; i ++) {
if (!NativeMethods.managed_unzip_stream_to_stream_nth_file (ref source_cb, ref dest_cb, i))
break;
if (Load (dest.ToArray (), kind) == null)
EmitError (2153, String.Format ("Error while loading '{0}'.", wreq.RequestUri));
source.Position = 0;
dest.SetLength (0);
}
}
}
} else {
if (Load (buffer, kind) == null)
EmitError (2153, String.Format ("Error while loading '{0}'.", wreq.RequestUri));
}
}
Dispatcher.BeginInvoke (AsyncDownloadComplete);
}
catch (Exception e) {
// we need to report everything since any error means CreateApplication won't be called
EmitError (error_code, e.ToString ());
}
}
// note: throwing MoonException from here is NOT ok since this code is called async
// and the exception won't be reported, directly, to the caller
void AssemblyGetResponse (IAsyncResult result)
{
object[] tuple = (object []) result.AsyncState;
WebRequest wreq = (WebRequest) tuple [0];
int error_code = (int) tuple [1];
try {
HttpWebResponse wresp = (HttpWebResponse) wreq.EndGetResponse (result);
if (wresp.StatusCode != HttpStatusCode.OK) {
wresp.Close ();
EmitError (error_code, String.Format ("Error while downloading the '{0}'.", wreq.RequestUri));
return;
}
if (wresp.ResponseUri != wreq.RequestUri) {
wresp.Close ();
EmitError (error_code, "Redirection not allowed to download assemblies.");
return;
}
Stream responseStream = wresp.GetResponseStream ();
AssemblyPart a = new AssemblyPart ();
Assembly asm = a.Load (responseStream);
if (asm == null) {
// it's not a valid assembly, try to unzip it.
using (MemoryStream ms = new MemoryStream ()) {
ManagedStreamCallbacks source_cb;
ManagedStreamCallbacks dest_cb;
StreamWrapper source_wrapper;
StreamWrapper dest_wrapper;
responseStream.Seek (0, SeekOrigin.Begin);
source_wrapper = new StreamWrapper (responseStream);
dest_wrapper = new StreamWrapper (ms);
source_cb = source_wrapper.GetCallbacks ();
dest_cb = dest_wrapper.GetCallbacks ();
// the zip files I've come across have a single file in them, the
// dll. so we assume that any/every zip file will contain a single
// file, and just get the first one from the zip file directory.
if (NativeMethods.managed_unzip_stream_to_stream_first_file (ref source_cb, ref dest_cb)) {
ms.Seek (0, SeekOrigin.Begin);
asm = a.Load (ms);
}
}
}
wresp.Close ();
if (asm != null)
Dispatcher.BeginInvoke (new AssemblyRegistration (AssemblyRegister), asm);
else
EmitError (2153, String.Format ("Error while loading '{0}'.", wreq.RequestUri));
}
catch (Exception e) {
// we need to report everything since any error means CreateApplication won't be called
EmitError (error_code, e.ToString ());
}
}
public static StreamResourceInfo GetResourceStream (StreamResourceInfo zipPackageStreamResourceInfo, Uri uriResource)
{
if (zipPackageStreamResourceInfo == null)
throw new ArgumentNullException ("zipPackageStreamResourceInfo");
if (uriResource == null)
throw new ArgumentNullException ("resourceUri");
MemoryStream ms = new MemoryStream ();
ManagedStreamCallbacks source_cb;
ManagedStreamCallbacks dest_cb;
StreamWrapper source_wrapper;
StreamWrapper dest_wrapper;
Stream source;
source = zipPackageStreamResourceInfo.Stream;
source_wrapper = new StreamWrapper (source);
dest_wrapper = new StreamWrapper (ms);
source_cb = source_wrapper.GetCallbacks ();
dest_cb = dest_wrapper.GetCallbacks ();
if (NativeMethods.managed_unzip_stream_to_stream (ref source_cb, ref dest_cb, uriResource.ToString ())) {
if (source.CanSeek)
source.Seek (0, SeekOrigin.Begin);
ms.Seek (0, SeekOrigin.Begin);
return new StreamResourceInfo (ms, null);
}
return null;
}
