0
Files
src/content/browser/message_port_provider.cc
Peter Kasting 8104ba8d59 Remove misuses of Empty{GURL,String,String16}(): content/
These are only for functions that need to return a reference, but have
no empty object to return. They are slower than just using the default
constructor directly, and serve no purpose in other use cases.

Bug: none
Change-Id: I9e01c19b4a818d2cfc24b2178ec56b7128a45215
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5251800
Commit-Queue: Peter Kasting <pkasting@chromium.org>
Auto-Submit: Peter Kasting <pkasting@chromium.org>
Reviewed-by: Dave Tapuska <dtapuska@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1254514}
2024-01-31 15:23:40 +00:00

118 lines
4.1 KiB
C++

// Copyright 2014 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "content/public/browser/message_port_provider.h"
#include <optional>
#include <utility>
#include "base/unguessable_token.h"
#include "build/build_config.h"
#include "build/chromecast_buildflags.h"
#include "content/browser/renderer_host/page_impl.h"
#include "content/browser/renderer_host/render_frame_host_impl.h"
#include "content/browser/renderer_host/render_process_host_impl.h"
#include "content/browser/renderer_host/render_view_host_impl.h"
#include "content/public/browser/browser_thread.h"
#include "third_party/blink/public/common/messaging/string_message_codec.h"
#if BUILDFLAG(IS_ANDROID)
#include "base/android/jni_string.h"
#include "base/android/scoped_java_ref.h"
#include "content/browser/android/app_web_message_port.h"
#include "content/public/browser/android/message_payload.h"
#endif
using blink::MessagePortChannel;
namespace content {
namespace {
void PostMessageToFrameInternal(
Page& page,
const std::u16string& source_origin,
const std::u16string& target_origin,
const blink::WebMessagePayload& data,
std::vector<blink::MessagePortDescriptor> ports) {
DCHECK_CURRENTLY_ON(BrowserThread::UI);
// TODO(chrisha): Kill off MessagePortChannel, as MessagePortDescriptor now
// plays that role.
std::vector<MessagePortChannel> channels;
for (auto& port : ports)
channels.emplace_back(MessagePortChannel(std::move(port)));
blink::TransferableMessage message = blink::EncodeWebMessagePayload(data);
message.ports = std::move(channels);
// As the message is posted from the embedder and not from another renderer,
// set the agent cluster ID to the embedder's.
message.sender_agent_cluster_id =
blink::WebMessagePort::GetEmbedderAgentClusterID();
RenderFrameHostImpl* rfh =
static_cast<RenderFrameHostImpl*>(&page.GetMainDocument());
rfh->PostMessageEvent(std::nullopt, source_origin, target_origin,
std::move(message));
}
#if BUILDFLAG(IS_ANDROID)
std::u16string ToString16(JNIEnv* env,
const base::android::JavaParamRef<jstring>& s) {
if (s.is_null())
return std::u16string();
return base::android::ConvertJavaStringToUTF16(env, s);
}
#endif
} // namespace
// static
void MessagePortProvider::PostMessageToFrame(
Page& page,
const std::u16string& source_origin,
const std::u16string& target_origin,
const blink::WebMessagePayload& data) {
PostMessageToFrameInternal(page, source_origin, target_origin, data,
std::vector<blink::MessagePortDescriptor>());
}
#if BUILDFLAG(IS_ANDROID)
void MessagePortProvider::PostMessageToFrame(
Page& page,
JNIEnv* env,
const base::android::JavaParamRef<jstring>& source_origin,
const base::android::JavaParamRef<jstring>& target_origin,
const base::android::JavaParamRef<jobject>& payload,
const base::android::JavaParamRef<jobjectArray>& ports) {
PostMessageToFrameInternal(
page, ToString16(env, source_origin), ToString16(env, target_origin),
android::ConvertToWebMessagePayloadFromJava(
base::android::ScopedJavaLocalRef<jobject>(payload)),
android::AppWebMessagePort::Release(env, ports));
}
#endif
#if BUILDFLAG(IS_FUCHSIA) || \
BUILDFLAG(ENABLE_CAST_RECEIVER) && \
(BUILDFLAG(IS_CASTOS) || BUILDFLAG(IS_CAST_ANDROID))
// static
void MessagePortProvider::PostMessageToFrame(
Page& page,
const std::u16string& source_origin,
const std::optional<std::u16string>& target_origin,
const std::u16string& data,
std::vector<blink::WebMessagePort> ports) {
// Extract the underlying descriptors.
std::vector<blink::MessagePortDescriptor> descriptors;
descriptors.reserve(ports.size());
for (size_t i = 0; i < ports.size(); ++i)
descriptors.push_back(ports[i].PassPort());
PostMessageToFrameInternal(page, source_origin,
target_origin.value_or(std::u16string()), data,
std::move(descriptors));
}
#endif
} // namespace content