1// Copyright 2014 The Chromium Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5#include "extensions/renderer/blob_native_handler.h"
6
7#include "base/bind.h"
8#include "third_party/WebKit/public/platform/WebCString.h"
9#include "third_party/WebKit/public/platform/WebURL.h"
10#include "third_party/WebKit/public/web/WebBlob.h"
11
12namespace {
13
14// Expects a single Blob argument. Returns the Blob's UUID.
15void GetBlobUuid(const v8::FunctionCallbackInfo<v8::Value>& args) {
16  DCHECK_EQ(1, args.Length());
17  blink::WebBlob blob = blink::WebBlob::fromV8Value(args[0]);
18  args.GetReturnValue().Set(
19      v8::String::NewFromUtf8(args.GetIsolate(), blob.uuid().utf8().data()));
20}
21
22// Take ownership of a Blob created on the browser process. Expects the Blob's
23// UUID, type, and size as arguments. Returns the Blob we just took to
24// Javascript. The Blob reference in the browser process is dropped through
25// a separate flow to avoid leaking Blobs if the script context is destroyed.
26void TakeBrowserProcessBlob(const v8::FunctionCallbackInfo<v8::Value>& args) {
27  DCHECK_EQ(3, args.Length());
28  DCHECK(args[0]->IsString());
29  DCHECK(args[1]->IsString());
30  DCHECK(args[2]->IsInt32());
31  std::string uuid(*v8::String::Utf8Value(args[0]->ToString()));
32  std::string type(*v8::String::Utf8Value(args[1]->ToString()));
33  blink::WebBlob blob =
34      blink::WebBlob::createFromUUID(blink::WebString::fromUTF8(uuid),
35                                     blink::WebString::fromUTF8(type),
36                                     args[2]->Int32Value());
37  args.GetReturnValue().Set(blob.toV8Value(args.Holder(), args.GetIsolate()));
38}
39
40}  // namespace
41
42namespace extensions {
43
44BlobNativeHandler::BlobNativeHandler(ScriptContext* context)
45    : ObjectBackedNativeHandler(context) {
46  RouteFunction("GetBlobUuid", base::Bind(&GetBlobUuid));
47  RouteFunction("TakeBrowserProcessBlob", base::Bind(&TakeBrowserProcessBlob));
48}
49
50}  // namespace extensions
51