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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 "third_party/blink/renderer/modules/beacon/navigator_beacon.h"
#include "third_party/blink/renderer/bindings/core/v8/v8_union_arraybuffer_arraybufferview_blob_formdata_readablestream_urlsearchparams_usvstring.h"
#include "third_party/blink/renderer/core/execution_context/execution_context.h"
#include "third_party/blink/renderer/core/fileapi/blob.h"
#include "third_party/blink/renderer/core/frame/local_dom_window.h"
#include "third_party/blink/renderer/core/frame/local_frame.h"
#include "third_party/blink/renderer/core/frame/settings.h"
#include "third_party/blink/renderer/core/frame/web_feature.h"
#include "third_party/blink/renderer/core/html/forms/form_data.h"
#include "third_party/blink/renderer/core/loader/ping_loader.h"
#include "third_party/blink/renderer/core/typed_arrays/dom_array_buffer_view.h"
#include "third_party/blink/renderer/platform/bindings/exception_state.h"
#include "third_party/blink/renderer/platform/bindings/script_state.h"
#include "third_party/blink/renderer/platform/instrumentation/use_counter.h"
#include "third_party/blink/renderer/platform/loader/cors/cors.h"
namespace blink {
NavigatorBeacon::NavigatorBeacon(Navigator& navigator)
: Supplement<Navigator>(navigator) {}
NavigatorBeacon::~NavigatorBeacon() = default;
void NavigatorBeacon::Trace(Visitor* visitor) const {
Supplement<Navigator>::Trace(visitor);
}
const char NavigatorBeacon::kSupplementName[] = "NavigatorBeacon";
NavigatorBeacon& NavigatorBeacon::From(Navigator& navigator) {
NavigatorBeacon* supplement =
Supplement<Navigator>::From<NavigatorBeacon>(navigator);
if (!supplement) {
supplement = MakeGarbageCollected<NavigatorBeacon>(navigator);
ProvideTo(navigator, supplement);
}
return *supplement;
}
bool NavigatorBeacon::CanSendBeacon(ExecutionContext* context,
const KURL& url,
ExceptionState& exception_state) {
if (!url.IsValid()) {
exception_state.ThrowTypeError(
"The URL argument is ill-formed or unsupported.");
return false;
}
// For now, only support HTTP and related.
if (!url.ProtocolIsInHTTPFamily()) {
exception_state.ThrowTypeError("Beacons are only supported over HTTP(S).");
return false;
}
// If detached, do not allow sending a Beacon.
return GetSupplementable()->DomWindow();
}
bool NavigatorBeacon::sendBeacon(
ScriptState* script_state,
Navigator& navigator,
const String& url_string,
const V8UnionReadableStreamOrXMLHttpRequestBodyInit* data,
ExceptionState& exception_state) {
return NavigatorBeacon::From(navigator).SendBeaconImpl(
script_state, url_string, data, exception_state);
}
bool NavigatorBeacon::SendBeaconImpl(
ScriptState* script_state,
const String& url_string,
const V8UnionReadableStreamOrXMLHttpRequestBodyInit* data,
ExceptionState& exception_state) {
ExecutionContext* execution_context = ExecutionContext::From(script_state);
KURL url = execution_context->CompleteURL(url_string);
if (!CanSendBeacon(execution_context, url, exception_state)) {
return false;
}
bool allowed;
LocalFrame* frame = GetSupplementable()->DomWindow()->GetFrame();
if (data) {
switch (data->GetContentType()) {
case V8UnionReadableStreamOrXMLHttpRequestBodyInit::ContentType::
kArrayBuffer: {
UseCounter::Count(execution_context,
WebFeature::kSendBeaconWithArrayBuffer);
auto* data_buffer = data->GetAsArrayBuffer();
if (!base::CheckedNumeric<wtf_size_t>(data_buffer->ByteLength())
.IsValid()) {
// At the moment the PingLoader::SendBeacon implementation cannot deal
// with huge ArrayBuffers.
exception_state.ThrowRangeError(
"The data provided to sendBeacon() exceeds the maximally "
"possible length, which is 4294967295.");
return false;
}
allowed =
PingLoader::SendBeacon(*script_state, frame, url, data_buffer);
break;
}
case V8UnionReadableStreamOrXMLHttpRequestBodyInit::ContentType::
kArrayBufferView: {
UseCounter::Count(execution_context,
WebFeature::kSendBeaconWithArrayBufferView);
auto* data_view = data->GetAsArrayBufferView().Get();
if (!base::CheckedNumeric<wtf_size_t>(data_view->byteLength())
.IsValid()) {
// At the moment the PingLoader::SendBeacon implementation cannot deal
// with huge ArrayBuffers.
exception_state.ThrowRangeError(
"The data provided to sendBeacon() exceeds the maximally "
"possible length, which is 4294967295.");
return false;
}
allowed = PingLoader::SendBeacon(*script_state, frame, url, data_view);
break;
}
case V8UnionReadableStreamOrXMLHttpRequestBodyInit::ContentType::kBlob:
UseCounter::Count(execution_context, WebFeature::kSendBeaconWithBlob);
allowed = PingLoader::SendBeacon(*script_state, frame, url,
data->GetAsBlob());
break;
case V8UnionReadableStreamOrXMLHttpRequestBodyInit::ContentType::
kFormData:
UseCounter::Count(execution_context,
WebFeature::kSendBeaconWithFormData);
allowed = PingLoader::SendBeacon(*script_state, frame, url,
data->GetAsFormData());
break;
case V8UnionReadableStreamOrXMLHttpRequestBodyInit::ContentType::
kReadableStream:
exception_state.ThrowTypeError(
"sendBeacon cannot have a ReadableStream body.");
return false;
case V8UnionReadableStreamOrXMLHttpRequestBodyInit::ContentType::
kURLSearchParams:
UseCounter::Count(execution_context,
WebFeature::kSendBeaconWithURLSearchParams);
allowed = PingLoader::SendBeacon(*script_state, frame, url,
data->GetAsURLSearchParams());
break;
case V8UnionReadableStreamOrXMLHttpRequestBodyInit::ContentType::
kUSVString:
UseCounter::Count(execution_context,
WebFeature::kSendBeaconWithUSVString);
allowed = PingLoader::SendBeacon(*script_state, frame, url,
data->GetAsUSVString());
break;
}
} else {
allowed = PingLoader::SendBeacon(*script_state, frame, url, String());
}
if (!allowed) {
UseCounter::Count(execution_context, WebFeature::kSendBeaconQuotaExceeded);
}
return allowed;
}
} // namespace blink
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