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// 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 "extensions/browser/api/socket/socket.h"
#include "base/functional/bind.h"
#include "base/lazy_instance.h"
#include "base/numerics/safe_conversions.h"
#include "extensions/browser/api/api_resource_manager.h"
#include "net/base/address_list.h"
#include "net/base/io_buffer.h"
#include "net/base/ip_address.h"
#include "net/base/ip_endpoint.h"
#include "net/base/net_errors.h"
#include "net/socket/socket.h"
namespace extensions {
const char kSocketTypeNotSupported[] = "Socket type does not support this API";
static base::LazyInstance<
BrowserContextKeyedAPIFactory<ApiResourceManager<Socket>>>::DestructorAtExit
g_factory = LAZY_INSTANCE_INITIALIZER;
// static
template <>
BrowserContextKeyedAPIFactory<ApiResourceManager<Socket>>*
ApiResourceManager<Socket>::GetFactoryInstance() {
return g_factory.Pointer();
}
Socket::Socket(const std::string& owner_extension_id)
: ApiResource(owner_extension_id) {}
Socket::~Socket() {
// Derived destructors should make sure the socket has been closed.
DCHECK(!is_connected_);
}
void Socket::Write(scoped_refptr<net::IOBuffer> io_buffer,
size_t byte_count,
net::CompletionOnceCallback callback) {
DCHECK(!callback.is_null());
write_queue_.emplace(io_buffer, byte_count, std::move(callback));
WriteData();
}
void Socket::WriteData() {
// IO is pending.
if (io_buffer_write_.get())
return;
WriteRequest& request = write_queue_.front();
DCHECK(request.byte_count >= request.bytes_written);
auto span = request.io_buffer->span()
.first(request.byte_count)
.subspan(request.bytes_written);
io_buffer_write_ =
base::MakeRefCounted<net::WrappedIOBuffer>(std::move(span));
int result = WriteImpl(
io_buffer_write_.get(), io_buffer_write_->size(),
base::BindOnce(&Socket::OnWriteComplete, base::Unretained(this)));
if (result != net::ERR_IO_PENDING)
OnWriteComplete(result);
}
void Socket::OnWriteComplete(int result) {
io_buffer_write_.reset();
WriteRequest& request = write_queue_.front();
if (result >= 0) {
request.bytes_written += static_cast<size_t>(result);
if (request.bytes_written < request.byte_count) {
WriteData();
return;
}
DCHECK(request.bytes_written == request.byte_count);
result = base::checked_cast<int>(request.bytes_written);
}
std::move(request.callback).Run(result);
write_queue_.pop();
if (!write_queue_.empty())
WriteData();
}
void Socket::SetKeepAlive(bool enable,
int delay,
SetKeepAliveCallback callback) {
std::move(callback).Run(false);
}
void Socket::SetNoDelay(bool no_delay, SetNoDelayCallback callback) {
std::move(callback).Run(false);
}
void Socket::Listen(const std::string& address,
uint16_t port,
int backlog,
ListenCallback callback) {
std::move(callback).Run(net::ERR_FAILED, kSocketTypeNotSupported);
}
void Socket::Accept(AcceptCompletionCallback callback) {
std::move(callback).Run(net::ERR_FAILED, mojo::NullRemote() /* socket */,
std::nullopt, mojo::ScopedDataPipeConsumerHandle(),
mojo::ScopedDataPipeProducerHandle());
}
// static
bool Socket::StringAndPortToIPEndPoint(const std::string& ip_address_str,
uint16_t port,
net::IPEndPoint* ip_end_point) {
DCHECK(ip_end_point);
net::IPAddress ip_address;
if (!ip_address.AssignFromIPLiteral(ip_address_str))
return false;
*ip_end_point = net::IPEndPoint(ip_address, port);
return true;
}
void Socket::IPEndPointToStringAndPort(const net::IPEndPoint& address,
std::string* ip_address_str,
uint16_t* port) {
DCHECK(ip_address_str);
DCHECK(port);
*ip_address_str = address.ToStringWithoutPort();
if (ip_address_str->empty()) {
*port = 0;
} else {
*port = address.port();
}
}
Socket::WriteRequest::WriteRequest(scoped_refptr<net::IOBuffer> io_buffer,
size_t byte_count,
net::CompletionOnceCallback callback)
: io_buffer(io_buffer),
byte_count(byte_count),
callback(std::move(callback)) {}
Socket::WriteRequest::WriteRequest(WriteRequest&& other) = default;
Socket::WriteRequest::~WriteRequest() = default;
// static
net::NetworkTrafficAnnotationTag Socket::GetNetworkTrafficAnnotationTag() {
return net::DefineNetworkTrafficAnnotation("chrome_apps_socket_api", R"(
semantics {
sender: "Chrome Apps Socket API"
description:
"Chrome Apps can use this API to send and receive data over "
"the network using TCP and UDP connections."
trigger: "A request from a Chrome App."
data: "Any data that the app sends."
destination: OTHER
destination_other:
"Data can be sent to any destination included in the app manifest."
}
policy {
cookies_allowed: NO
setting:
"No settings control. Chrome Connectivity Diagnostics component "
"uses this API. Other than that, this request will not be sent if "
"the user does not install a Chrome App that uses the Socket API."
chrome_policy {
ExtensionInstallBlocklist {
ExtensionInstallBlocklist: {
entries: '*'
}
}
}
})");
}
} // namespace extensions
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