tor-browser

MerchantValidationEvent.cpp (6070B)

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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#include "mozilla/dom/MerchantValidationEvent.h"

#include "mozilla/dom/Document.h"
#include "mozilla/dom/Location.h"
#include "mozilla/dom/PaymentRequest.h"
#include "mozilla/dom/URL.h"
#include "nsIURI.h"
#include "nsNetCID.h"
#include "nsNetUtil.h"

namespace mozilla::dom {

NS_IMPL_CYCLE_COLLECTION_INHERITED(MerchantValidationEvent, Event,
                                  mValidationURL, mRequest)

NS_IMPL_CYCLE_COLLECTION_TRACE_BEGIN_INHERITED(MerchantValidationEvent, Event)
NS_IMPL_CYCLE_COLLECTION_TRACE_END

NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(MerchantValidationEvent)
NS_INTERFACE_MAP_END_INHERITING(Event)

NS_IMPL_ADDREF_INHERITED(MerchantValidationEvent, Event)
NS_IMPL_RELEASE_INHERITED(MerchantValidationEvent, Event)

// User-land code constructor
already_AddRefed<MerchantValidationEvent> MerchantValidationEvent::Constructor(
   const GlobalObject& aGlobal, const nsAString& aType,
   const MerchantValidationEventInit& aEventInitDict, ErrorResult& aRv) {
 // validate passed URL
 nsCOMPtr<mozilla::dom::EventTarget> owner =
     do_QueryInterface(aGlobal.GetAsSupports());
 return Constructor(owner, aType, aEventInitDict, aRv);
}

// Internal JS object constructor
already_AddRefed<MerchantValidationEvent> MerchantValidationEvent::Constructor(
   EventTarget* aOwner, const nsAString& aType,
   const MerchantValidationEventInit& aEventInitDict, ErrorResult& aRv) {
 RefPtr<MerchantValidationEvent> e = new MerchantValidationEvent(aOwner);
 bool trusted = e->Init(aOwner);
 e->InitEvent(aType, aEventInitDict.mBubbles, aEventInitDict.mCancelable);
 e->init(aEventInitDict, aRv);
 if (aRv.Failed()) {
   return nullptr;
 }
 e->SetTrusted(trusted);
 e->SetComposed(aEventInitDict.mComposed);
 return e.forget();
}

void MerchantValidationEvent::init(
   const MerchantValidationEventInit& aEventInitDict, ErrorResult& aRv) {
 // Check methodName is valid
 if (!aEventInitDict.mMethodName.IsEmpty()) {
   PaymentRequest::IsValidPaymentMethodIdentifier(aEventInitDict.mMethodName,
                                                  aRv);
   if (aRv.Failed()) {
     return;
   }
 }
 SetMethodName(aEventInitDict.mMethodName);
 nsCOMPtr<nsPIDOMWindowInner> window = do_QueryInterface(GetParentObject());
 auto doc = window->GetExtantDoc();
 if (!doc) {
   aRv.ThrowAbortError("The owner document does not exist");
   return;
 }

 Result<OwningNonNull<nsIURI>, nsresult> rv =
     doc->ResolveWithBaseURI(aEventInitDict.mValidationURL);
 if (rv.isErr()) {
   aRv.ThrowTypeError("validationURL cannot be parsed");
   return;
 }
 mValidationURL = rv.unwrap();
}

MerchantValidationEvent::MerchantValidationEvent(EventTarget* aOwner)
   : Event(aOwner, nullptr, nullptr), mWaitForUpdate(false) {
 MOZ_ASSERT(aOwner);
}

void MerchantValidationEvent::ResolvedCallback(JSContext* aCx,
                                              JS::Handle<JS::Value> aValue,
                                              ErrorResult& aRv) {
 MOZ_ASSERT(aCx);
 MOZ_ASSERT(mRequest);

 if (!mWaitForUpdate) {
   return;
 }
 mWaitForUpdate = false;

 // If we eventually end up supporting merchant validation
 // we would validate `aValue` here, as per:
 // https://w3c.github.io/payment-request/#validate-merchant-s-details-algorithm
 //
 // Right now, MerchantValidationEvent is only implemented for standards
 // conformance, which is why at this point we throw a
 // NS_ERROR_DOM_NOT_SUPPORTED_ERR.

 ErrorResult result;
 result.ThrowNotSupportedError(
     "complete() is not supported by Firefox currently");
 mRequest->AbortUpdate(result);
 mRequest->SetUpdating(false);
}

void MerchantValidationEvent::RejectedCallback(JSContext* aCx,
                                              JS::Handle<JS::Value> aValue,
                                              ErrorResult& aRv) {
 MOZ_ASSERT(mRequest);
 if (!mWaitForUpdate) {
   return;
 }
 mWaitForUpdate = false;
 ErrorResult result;
 result.ThrowAbortError(
     "The promise for MerchantValidtaionEvent.complete() is rejected");
 mRequest->AbortUpdate(result);
 mRequest->SetUpdating(false);
}

void MerchantValidationEvent::Complete(Promise& aPromise, ErrorResult& aRv) {
 if (!IsTrusted()) {
   aRv.ThrowInvalidStateError("Called on an untrusted event");
   return;
 }

 MOZ_ASSERT(mRequest);

 if (mWaitForUpdate) {
   aRv.ThrowInvalidStateError(
       "The MerchantValidationEvent is waiting for update");
   return;
 }

 if (!mRequest->ReadyForUpdate()) {
   aRv.ThrowInvalidStateError(
       "The PaymentRequest state is not eInteractive or the PaymentRequest is "
       "updating");
   return;
 }

 aPromise.AppendNativeHandler(this);

 StopPropagation();
 StopImmediatePropagation();
 mWaitForUpdate = true;
 mRequest->SetUpdating(true);
}

void MerchantValidationEvent::SetRequest(PaymentRequest* aRequest) {
 MOZ_ASSERT(IsTrusted());
 MOZ_ASSERT(!mRequest);
 MOZ_ASSERT(aRequest);

 mRequest = aRequest;
}

void MerchantValidationEvent::GetValidationURL(nsAString& aValidationURL) {
 nsAutoCString utf8href;
 nsresult rv = mValidationURL->GetSpec(utf8href);
 MOZ_ASSERT(NS_SUCCEEDED(rv));
 (void)rv;
 aValidationURL.Assign(NS_ConvertUTF8toUTF16(utf8href));
}

void MerchantValidationEvent::GetMethodName(nsAString& aMethodName) {
 aMethodName.Assign(mMethodName);
}

void MerchantValidationEvent::SetMethodName(const nsAString& aMethodName) {
 mMethodName.Assign(aMethodName);
}

MerchantValidationEvent::~MerchantValidationEvent() = default;

JSObject* MerchantValidationEvent::WrapObjectInternal(
   JSContext* aCx, JS::Handle<JSObject*> aGivenProto) {
 return MerchantValidationEvent_Binding::Wrap(aCx, this, aGivenProto);
}

}  // namespace mozilla::dom