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// Copyright 2022 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/shared_storage/util.h"
#include "base/feature_list.h"
#include "base/memory/scoped_refptr.h"
#include "components/aggregation_service/aggregation_coordinator_utils.h"
#include "services/network/public/cpp/features.h"
#include "services/network/public/mojom/permissions_policy/permissions_policy_feature.mojom-blink.h"
#include "services/network/public/mojom/shared_storage.mojom-blink.h"
#include "third_party/blink/public/common/features.h"
#include "third_party/blink/public/common/shared_storage/shared_storage_utils.h"
#include "third_party/blink/public/mojom/shared_storage/shared_storage.mojom-blink.h"
#include "third_party/blink/renderer/bindings/core/v8/script_promise_resolver.h"
#include "third_party/blink/renderer/bindings/core/v8/v8_throw_dom_exception.h"
#include "third_party/blink/renderer/bindings/modules/v8/v8_shared_storage_private_aggregation_config.h"
#include "third_party/blink/renderer/bindings/modules/v8/v8_shared_storage_run_operation_method_options.h"
#include "third_party/blink/renderer/core/execution_context/execution_context.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/weborigin/security_origin.h"
#include "third_party/blink/renderer/platform/wtf/text/wtf_string.h"
namespace blink {
bool StringFromV8(v8::Isolate* isolate, v8::Local<v8::Value> val, String* out) {
DCHECK(out);
if (!val->IsString()) {
return false;
}
*out = ToBlinkString<String>(isolate, v8::Local<v8::String>::Cast(val),
kDoNotExternalize);
return true;
}
bool IsReservedLockName(const String& lock_name) {
return lock_name.StartsWith('-');
}
bool IsValidSharedStorageBatchUpdateMethodsArgument(
const Vector<
network::mojom::blink::SharedStorageModifierMethodWithOptionsPtr>&
methods_with_options) {
if (!base::FeatureList::IsEnabled(
network::features::kSharedStorageTransactionalBatchUpdate)) {
return true;
}
for (const auto& method : methods_with_options) {
if (method->with_lock) {
return false;
}
}
return true;
}
bool CheckBrowsingContextIsValid(ScriptState& script_state,
ExceptionState& exception_state) {
if (!script_state.ContextIsValid()) {
exception_state.ThrowDOMException(DOMExceptionCode::kInvalidAccessError,
"context is not valid");
return false;
}
ExecutionContext* execution_context = ExecutionContext::From(&script_state);
if (execution_context->IsContextDestroyed()) {
exception_state.ThrowDOMException(DOMExceptionCode::kInvalidAccessError,
"context has been destroyed");
return false;
}
return true;
}
bool CheckSharedStoragePermissionsPolicy(ExecutionContext& execution_context,
ExceptionState& exception_state) {
// The worklet scope has to be created from the Window scope, thus the
// shared-storage permissions policy feature must have been enabled. Besides,
// the `SharedStorageWorkletGlobalScope` is currently given a null
// `PermissionsPolicy`, so we shouldn't attempt to check the permissions
// policy.
//
// TODO(crbug.com/1414951): When the `PermissionsPolicy` is properly set for
// `SharedStorageWorkletGlobalScope`, we can remove this.
if (execution_context.IsSharedStorageWorkletGlobalScope()) {
return true;
}
if (!execution_context.IsFeatureEnabled(
network::mojom::PermissionsPolicyFeature::kSharedStorage)) {
exception_state.ThrowDOMException(
DOMExceptionCode::kInvalidAccessError,
"The \"shared-storage\" Permissions Policy denied the method on "
"window.sharedStorage.");
return false;
}
return true;
}
bool CheckPrivateAggregationConfig(
const SharedStorageRunOperationMethodOptions& options,
ScriptState& script_state,
ScriptPromiseResolverBase& resolver,
mojom::blink::PrivateAggregationConfigPtr& out_private_aggregation_config) {
out_private_aggregation_config = mojom::blink::PrivateAggregationConfig::New();
WTF::String& out_context_id = out_private_aggregation_config->context_id;
scoped_refptr<const SecurityOrigin>& out_aggregation_coordinator_origin =
out_private_aggregation_config->aggregation_coordinator_origin;
uint32_t& out_filtering_id_max_bytes =
out_private_aggregation_config->filtering_id_max_bytes;
out_filtering_id_max_bytes = kPrivateAggregationApiDefaultFilteringIdMaxBytes;
if (!options.hasPrivateAggregationConfig()) {
return true;
}
bool is_in_fenced_frame =
ExecutionContext::From(&script_state)->IsInFencedFrame();
if (options.privateAggregationConfig()->hasContextId()) {
if (options.privateAggregationConfig()->contextId().length() >
kPrivateAggregationApiContextIdMaxLength) {
resolver.Reject(V8ThrowDOMException::CreateOrEmpty(
script_state.GetIsolate(), DOMExceptionCode::kDataError,
"contextId length cannot be larger than 64"));
return false;
}
if (is_in_fenced_frame &&
base::FeatureList::IsEnabled(
features::kFencedFramesLocalUnpartitionedDataAccess)) {
resolver.Reject(V8ThrowDOMException::CreateOrEmpty(
script_state.GetIsolate(), DOMExceptionCode::kDataError,
"contextId cannot be set inside of fenced frames."));
return false;
}
out_context_id = options.privateAggregationConfig()->contextId();
}
if (options.privateAggregationConfig()->hasAggregationCoordinatorOrigin()) {
scoped_refptr<SecurityOrigin> parsed_coordinator =
SecurityOrigin::CreateFromString(
options.privateAggregationConfig()->aggregationCoordinatorOrigin());
CHECK(parsed_coordinator);
if (parsed_coordinator->IsOpaque()) {
resolver.Reject(V8ThrowDOMException::CreateOrEmpty(
script_state.GetIsolate(), DOMExceptionCode::kSyntaxError,
"aggregationCoordinatorOrigin must be a valid origin"));
return false;
}
if (!aggregation_service::IsAggregationCoordinatorOriginAllowed(
parsed_coordinator->ToUrlOrigin())) {
resolver.Reject(V8ThrowDOMException::CreateOrEmpty(
script_state.GetIsolate(), DOMExceptionCode::kDataError,
"aggregationCoordinatorOrigin must be on the allowlist"));
return false;
}
out_aggregation_coordinator_origin = parsed_coordinator;
}
if (options.privateAggregationConfig()->hasFilteringIdMaxBytes()) {
if (options.privateAggregationConfig()->filteringIdMaxBytes() < 1) {
resolver.Reject(V8ThrowDOMException::CreateOrEmpty(
script_state.GetIsolate(), DOMExceptionCode::kDataError,
"filteringIdMaxBytes must be positive"));
return false;
}
if (options.privateAggregationConfig()->filteringIdMaxBytes() >
kMaximumFilteringIdMaxBytes) {
resolver.Reject(V8ThrowDOMException::CreateOrEmpty(
script_state.GetIsolate(), DOMExceptionCode::kDataError,
"filteringIdMaxBytes is too big"));
return false;
}
if (is_in_fenced_frame &&
base::FeatureList::IsEnabled(
features::kFencedFramesLocalUnpartitionedDataAccess)) {
resolver.Reject(V8ThrowDOMException::CreateOrEmpty(
script_state.GetIsolate(), DOMExceptionCode::kDataError,
"filteringIdMaxBytes cannot be set inside of fenced frames."));
return false;
}
out_filtering_id_max_bytes = static_cast<uint32_t>(
options.privateAggregationConfig()->filteringIdMaxBytes());
}
if (options.privateAggregationConfig()->hasMaxContributions() &&
base::FeatureList::IsEnabled(
features::kPrivateAggregationApiMaxContributions)) {
const auto requested_max_contributions =
options.privateAggregationConfig()->maxContributions();
if (requested_max_contributions == 0) {
resolver.Reject(V8ThrowDOMException::CreateOrEmpty(
script_state.GetIsolate(), DOMExceptionCode::kDataError,
"maxContributions must be positive"));
return false;
}
const uint16_t max_contributions_clamped =
base::MakeClampedNum(requested_max_contributions);
out_private_aggregation_config->max_contributions =
max_contributions_clamped;
}
return true;
}
} // namespace blink
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