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// Copyright 2014 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "extensions/renderer/blob_native_handler.h"
#include "base/bind.h"
#include "extensions/renderer/script_context.h"
#include "third_party/blink/public/platform/web_url.h"
#include "third_party/blink/public/web/web_blob.h"
namespace {
// Expects a single Blob argument. Returns the Blob's UUID.
void GetBlobUuid(const v8::FunctionCallbackInfo<v8::Value>& args) {
CHECK_EQ(1, args.Length());
blink::WebBlob blob = blink::WebBlob::FromV8Value(args[0]);
args.GetReturnValue().Set(
v8::String::NewFromUtf8(args.GetIsolate(), blob.Uuid().Utf8().data())
.ToLocalChecked());
}
} // namespace
namespace extensions {
BlobNativeHandler::BlobNativeHandler(ScriptContext* context)
: ObjectBackedNativeHandler(context) {}
void BlobNativeHandler::AddRoutes() {
RouteHandlerFunction("GetBlobUuid", base::BindRepeating(&GetBlobUuid));
RouteHandlerFunction(
"TakeBrowserProcessBlob",
base::BindRepeating(&BlobNativeHandler::TakeBrowserProcessBlob,
base::Unretained(this)));
}
// Take ownership of a Blob created on the browser process. Expects the Blob's
// UUID, type, and size as arguments. Returns the Blob we just took to
// Javascript. The Blob reference in the browser process is dropped through
// a separate flow to avoid leaking Blobs if the script context is destroyed.
void BlobNativeHandler::TakeBrowserProcessBlob(
const v8::FunctionCallbackInfo<v8::Value>& args) {
CHECK_EQ(3, args.Length());
CHECK(args[0]->IsString());
CHECK(args[1]->IsString());
CHECK(args[2]->IsInt32());
v8::Isolate* isolate = args.GetIsolate();
std::string uuid(*v8::String::Utf8Value(isolate, args[0]));
std::string type(*v8::String::Utf8Value(isolate, args[1]));
blink::WebBlob blob = blink::WebBlob::CreateFromUUID(
blink::WebString::FromUTF8(uuid), blink::WebString::FromUTF8(type),
args[2].As<v8::Int32>()->Value());
args.GetReturnValue().Set(
blob.ToV8Value(context()->v8_context()->Global(), isolate));
}
} // namespace extensions
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