gecko-dev/dom/mobileconnection/MobileConnection.cpp

/* -*- 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/MobileConnection.h"

#include "MobileConnectionCallback.h"
#include "mozilla/AsyncEventDispatcher.h"
#include "mozilla/dom/CFStateChangeEvent.h"
#include "mozilla/dom/DataErrorEvent.h"
#include "mozilla/dom/MozClirModeEvent.h"
#include "mozilla/dom/MozEmergencyCbModeEvent.h"
#include "mozilla/dom/MozOtaStatusEvent.h"
#include "mozilla/dom/ToJSValue.h"
#include "mozilla/Preferences.h"
#include "mozilla/Services.h"
#include "nsIDOMDOMRequest.h"
#include "nsIIccInfo.h"
#include "nsIPermissionManager.h"
#include "nsIVariant.h"
#include "nsJSON.h"
#include "nsJSUtils.h"
#include "nsServiceManagerUtils.h"

#define MOBILECONN_ERROR_INVALID_PARAMETER NS_LITERAL_STRING("InvalidParameter")
#define MOBILECONN_ERROR_INVALID_PASSWORD  NS_LITERAL_STRING("InvalidPassword")

#ifdef CONVERT_STRING_TO_NULLABLE_ENUM
#undef CONVERT_STRING_TO_NULLABLE_ENUM
#endif
#define CONVERT_STRING_TO_NULLABLE_ENUM(_string, _enumType, _enum)      \
{                                                                       \
  uint32_t i = 0;                                                       \
  for (const EnumEntry* entry = _enumType##Values::strings;             \
       entry->value;                                                    \
       ++entry, ++i) {                                                  \
    if (_string.EqualsASCII(entry->value)) {                            \
      _enum.SetValue(static_cast<_enumType>(i));                        \
    }                                                                   \
  }                                                                     \
}

using mozilla::ErrorResult;
using namespace mozilla::dom;
using namespace mozilla::dom::mobileconnection;

class MobileConnection::Listener final : public nsIMobileConnectionListener
                                       , public nsIIccListener
{
  MobileConnection* mMobileConnection;

public:
  NS_DECL_ISUPPORTS
  NS_FORWARD_SAFE_NSIMOBILECONNECTIONLISTENER(mMobileConnection)
  NS_FORWARD_SAFE_NSIICCLISTENER(mMobileConnection)

  explicit Listener(MobileConnection* aMobileConnection)
    : mMobileConnection(aMobileConnection)
  {
    MOZ_ASSERT(mMobileConnection);
  }

  void Disconnect()
  {
    MOZ_ASSERT(mMobileConnection);
    mMobileConnection = nullptr;
  }

private:
  ~Listener()
  {
    MOZ_ASSERT(!mMobileConnection);
  }
};

NS_IMPL_ISUPPORTS(MobileConnection::Listener, nsIMobileConnectionListener,
                  nsIIccListener)

NS_IMPL_CYCLE_COLLECTION_CLASS(MobileConnection)

NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN_INHERITED(MobileConnection,
                                                  DOMEventTargetHelper)
  // Don't traverse mListener because it doesn't keep any reference to
  // MobileConnection but a raw pointer instead. Neither does mMobileConnection
  // because it's an xpcom service owned object and is only released at shutting
  // down.
  NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mVoice)
  NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mData)
  NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mIccHandler)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END

NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN_INHERITED(MobileConnection,
                                                DOMEventTargetHelper)
  tmp->Shutdown();
  NS_IMPL_CYCLE_COLLECTION_UNLINK(mVoice)
  NS_IMPL_CYCLE_COLLECTION_UNLINK(mData)
  NS_IMPL_CYCLE_COLLECTION_UNLINK(mIccHandler)
NS_IMPL_CYCLE_COLLECTION_UNLINK_END

NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION_INHERITED(MobileConnection)
  // MobileConnection does not expose nsIMobileConnectionListener. mListener is
  // the exposed nsIMobileConnectionListener and forwards the calls it receives
  // to us.
NS_INTERFACE_MAP_END_INHERITING(DOMEventTargetHelper)

NS_IMPL_ADDREF_INHERITED(MobileConnection, DOMEventTargetHelper)
NS_IMPL_RELEASE_INHERITED(MobileConnection, DOMEventTargetHelper)

MobileConnection::MobileConnection(nsPIDOMWindow* aWindow, uint32_t aClientId)
  : DOMEventTargetHelper(aWindow)
  , mClientId(aClientId)
{
  nsCOMPtr<nsIMobileConnectionService> service =
    do_GetService(NS_MOBILE_CONNECTION_SERVICE_CONTRACTID);

  // Per WebAPI design, mIccId should be null instead of an empty string when no
  // SIM card is inserted. Set null as default value.
  mIccId.SetIsVoid(true);

  // Not being able to acquire the service isn't fatal since we check
  // for it explicitly below.
  if (!service) {
    NS_WARNING("Could not acquire nsIMobileConnectionService!");
    return;
  }

  nsresult rv = service->GetItemByServiceId(mClientId,
                                            getter_AddRefs(mMobileConnection));

  if (NS_FAILED(rv) || !mMobileConnection) {
    NS_WARNING("Could not acquire nsIMobileConnection!");
    return;
  }

  mListener = new Listener(this);
  mVoice = new MobileConnectionInfo(GetOwner());
  mData = new MobileConnectionInfo(GetOwner());

  if (CheckPermission("mobileconnection")) {
    DebugOnly<nsresult> rv = mMobileConnection->RegisterListener(mListener);
    NS_WARN_IF_FALSE(NS_SUCCEEDED(rv),
                     "Failed registering mobile connection messages with service");
    UpdateVoice();
    UpdateData();

    nsCOMPtr<nsIIccService> iccService = do_GetService(ICC_SERVICE_CONTRACTID);

    if (iccService) {
      iccService->GetIccByServiceId(mClientId, getter_AddRefs(mIccHandler));
    }

    if (!mIccHandler) {
      NS_WARNING("Could not acquire nsIMobileConnection or nsIIcc!");
      return;
    }

    rv = mIccHandler->RegisterListener(mListener);
    NS_WARN_IF_FALSE(NS_SUCCEEDED(rv),
                     "Failed registering icc messages with service");
    UpdateIccId();
  }
}

void
MobileConnection::Shutdown()
{
  if (mListener) {
    if (mMobileConnection) {
      mMobileConnection->UnregisterListener(mListener);
    }

    if (mIccHandler) {
      mIccHandler->UnregisterListener(mListener);
    }

    mListener->Disconnect();
    mListener = nullptr;
  }
}

MobileConnection::~MobileConnection()
{
  Shutdown();
}

void
MobileConnection::DisconnectFromOwner()
{
  DOMEventTargetHelper::DisconnectFromOwner();
  // Event listeners can't be handled anymore, so we can shutdown
  // the MobileConnection.
  Shutdown();
}

JSObject*
MobileConnection::WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto)
{
  return MozMobileConnectionBinding::Wrap(aCx, this, aGivenProto);
}

bool
MobileConnection::CheckPermission(const char* aType) const
{
  nsCOMPtr<nsIPermissionManager> permMgr =
    mozilla::services::GetPermissionManager();
  NS_ENSURE_TRUE(permMgr, false);

  uint32_t permission = nsIPermissionManager::DENY_ACTION;
  permMgr->TestPermissionFromWindow(GetOwner(), aType, &permission);
  return permission == nsIPermissionManager::ALLOW_ACTION;
}

void
MobileConnection::UpdateVoice()
{
  if (!mMobileConnection) {
    return;
  }

  nsCOMPtr<nsIMobileConnectionInfo> info;
  mMobileConnection->GetVoice(getter_AddRefs(info));
  mVoice->Update(info);
}

void
MobileConnection::UpdateData()
{
  if (!mMobileConnection) {
    return;
  }

  nsCOMPtr<nsIMobileConnectionInfo> info;
  mMobileConnection->GetData(getter_AddRefs(info));
  mData->Update(info);
}

bool
MobileConnection::UpdateIccId()
{
  nsAutoString iccId;
  nsCOMPtr<nsIIccInfo> iccInfo;
  if (mIccHandler &&
      NS_SUCCEEDED(mIccHandler->GetIccInfo(getter_AddRefs(iccInfo))) &&
      iccInfo) {
    iccInfo->GetIccid(iccId);
  } else {
    iccId.SetIsVoid(true);
  }

  if (!mIccId.Equals(iccId)) {
    mIccId = iccId;
    return true;
  }

  return false;
}

nsresult
MobileConnection::NotifyError(nsIDOMDOMRequest* aRequest, const nsAString& aMessage)
{
  nsCOMPtr<nsIDOMRequestService> rs = do_GetService(DOMREQUEST_SERVICE_CONTRACTID);
  NS_ENSURE_TRUE(rs, NS_ERROR_FAILURE);

  return rs->FireErrorAsync(aRequest, aMessage);
}

bool
MobileConnection::IsValidPassword(const nsAString& aPassword)
{
  // Check valid PIN for supplementary services. See TS.22.004 clause 5.2.
  if (aPassword.IsEmpty() || aPassword.Length() != 4) {
    return false;
  }

  nsresult rv;
  int32_t password = nsString(aPassword).ToInteger(&rv);
  return NS_SUCCEEDED(rv) && password >= 0 && password <= 9999;
}

bool
MobileConnection::IsValidCallForwardingReason(int32_t aReason)
{
  return aReason >= nsIMobileConnection::CALL_FORWARD_REASON_UNCONDITIONAL &&
         aReason <= nsIMobileConnection::CALL_FORWARD_REASON_ALL_CONDITIONAL_CALL_FORWARDING;
}

bool
MobileConnection::IsValidCallForwardingAction(int32_t aAction)
{
  return aAction >= nsIMobileConnection::CALL_FORWARD_ACTION_DISABLE &&
         aAction <= nsIMobileConnection::CALL_FORWARD_ACTION_ERASURE &&
         // Set operation doesn't allow "query" action.
         aAction != nsIMobileConnection::CALL_FORWARD_ACTION_QUERY_STATUS;
}

bool
MobileConnection::IsValidCallBarringProgram(int32_t aProgram)
{
  return aProgram >= nsIMobileConnection::CALL_BARRING_PROGRAM_ALL_OUTGOING &&
         aProgram <= nsIMobileConnection::CALL_BARRING_PROGRAM_INCOMING_SERVICE;
}

bool
MobileConnection::IsValidCallBarringOptions(const MozCallBarringOptions& aOptions,
                                           bool isSetting)
{
  if (!aOptions.mServiceClass.WasPassed() || aOptions.mServiceClass.Value().IsNull() ||
      !aOptions.mProgram.WasPassed() || aOptions.mProgram.Value().IsNull() ||
      !IsValidCallBarringProgram(aOptions.mProgram.Value().Value())) {
    return false;
  }

  // For setting callbarring options, |enabled| and |password| are required.
  if (isSetting &&
      (!aOptions.mEnabled.WasPassed() || aOptions.mEnabled.Value().IsNull() ||
       !aOptions.mPassword.WasPassed() || aOptions.mPassword.Value().IsVoid())) {
    return false;
  }

  return true;
}

bool
MobileConnection::IsValidCallForwardingOptions(const MozCallForwardingOptions& aOptions)
{
  if (!aOptions.mReason.WasPassed() || aOptions.mReason.Value().IsNull() ||
      !aOptions.mAction.WasPassed() || aOptions.mAction.Value().IsNull() ||
      !IsValidCallForwardingReason(aOptions.mReason.Value().Value()) ||
      !IsValidCallForwardingAction(aOptions.mAction.Value().Value())) {
    return false;
  }

  return true;
}

// WebIDL interface

void
MobileConnection::GetLastKnownNetwork(nsString& aRetVal) const
{
  aRetVal.SetIsVoid(true);

  if (!mMobileConnection) {
    return;
  }

  mMobileConnection->GetLastKnownNetwork(aRetVal);
}

void
MobileConnection::GetLastKnownHomeNetwork(nsString& aRetVal) const
{
  aRetVal.SetIsVoid(true);

  if (!mMobileConnection) {
    return;
  }

  mMobileConnection->GetLastKnownHomeNetwork(aRetVal);
}

// All fields below require the "mobileconnection" permission.

MobileConnectionInfo*
MobileConnection::Voice() const
{
  return mVoice;
}

MobileConnectionInfo*
MobileConnection::Data() const
{
  return mData;
}

void
MobileConnection::GetIccId(nsString& aRetVal) const
{
  aRetVal = mIccId;
}

Nullable<MobileNetworkSelectionMode>
MobileConnection::GetNetworkSelectionMode() const
{
  Nullable<MobileNetworkSelectionMode> retVal =
    Nullable<MobileNetworkSelectionMode>();

  if (!mMobileConnection) {
    return retVal;
  }

  int32_t mode = nsIMobileConnection::NETWORK_SELECTION_MODE_UNKNOWN;
  if (NS_SUCCEEDED(mMobileConnection->GetNetworkSelectionMode(&mode)) &&
      mode != nsIMobileConnection::NETWORK_SELECTION_MODE_UNKNOWN) {
    MOZ_ASSERT(mode < static_cast<int32_t>(MobileNetworkSelectionMode::EndGuard_));
    retVal.SetValue(static_cast<MobileNetworkSelectionMode>(mode));
  }

  return retVal;
}

Nullable<MobileRadioState>
MobileConnection::GetRadioState() const
{
  Nullable<MobileRadioState> retVal = Nullable<MobileRadioState>();

  if (!mMobileConnection) {
    return retVal;
  }

  int32_t state = nsIMobileConnection::MOBILE_RADIO_STATE_UNKNOWN;
  if (NS_SUCCEEDED(mMobileConnection->GetRadioState(&state)) &&
      state != nsIMobileConnection::MOBILE_RADIO_STATE_UNKNOWN) {
    MOZ_ASSERT(state < static_cast<int32_t>(MobileRadioState::EndGuard_));
    retVal.SetValue(static_cast<MobileRadioState>(state));
  }

  return retVal;
}

void
MobileConnection::GetSupportedNetworkTypes(nsTArray<MobileNetworkType>& aTypes) const
{
  if (!mMobileConnection) {
    return;
  }

  int32_t* types = nullptr;
  uint32_t length = 0;

  nsresult rv = mMobileConnection->GetSupportedNetworkTypes(&types, &length);
  NS_ENSURE_SUCCESS_VOID(rv);

  for (uint32_t i = 0; i < length; ++i) {
    int32_t type = types[i];

    MOZ_ASSERT(type < static_cast<int32_t>(MobileNetworkType::EndGuard_));
    aTypes.AppendElement(static_cast<MobileNetworkType>(type));
  }

  free(types);
}

already_AddRefed<DOMRequest>
MobileConnection::GetNetworks(ErrorResult& aRv)
{
  if (!mMobileConnection) {
    aRv.Throw(NS_ERROR_FAILURE);
    return nullptr;
  }

  RefPtr<DOMRequest> request = new DOMRequest(GetOwner());
  RefPtr<MobileConnectionCallback> requestCallback =
    new MobileConnectionCallback(GetOwner(), request);

  nsresult rv = mMobileConnection->GetNetworks(requestCallback);
  if (NS_FAILED(rv)) {
    aRv.Throw(rv);
    return nullptr;
  }

  return request.forget();
}

already_AddRefed<DOMRequest>
MobileConnection::SelectNetwork(MobileNetworkInfo& aNetwork, ErrorResult& aRv)
{
  if (!mMobileConnection) {
    aRv.Throw(NS_ERROR_FAILURE);
    return nullptr;
  }

  RefPtr<DOMRequest> request = new DOMRequest(GetOwner());
  RefPtr<MobileConnectionCallback> requestCallback =
    new MobileConnectionCallback(GetOwner(), request);

  nsresult rv = mMobileConnection->SelectNetwork(&aNetwork, requestCallback);
  if (NS_FAILED(rv)) {
    aRv.Throw(rv);
    return nullptr;
  }

  return request.forget();
}

already_AddRefed<DOMRequest>
MobileConnection::SelectNetworkAutomatically(ErrorResult& aRv)
{
  if (!mMobileConnection) {
    aRv.Throw(NS_ERROR_FAILURE);
    return nullptr;
  }

  RefPtr<DOMRequest> request = new DOMRequest(GetOwner());
  RefPtr<MobileConnectionCallback> requestCallback =
    new MobileConnectionCallback(GetOwner(), request);

  nsresult rv =
    mMobileConnection->SelectNetworkAutomatically(requestCallback);
  if (NS_FAILED(rv)) {
    aRv.Throw(rv);
    return nullptr;
  }

  return request.forget();
}

already_AddRefed<DOMRequest>
MobileConnection::SetPreferredNetworkType(MobilePreferredNetworkType& aType,
                                          ErrorResult& aRv)
{
  if (!mMobileConnection) {
    aRv.Throw(NS_ERROR_FAILURE);
    return nullptr;
  }

  int32_t type = static_cast<int32_t>(aType);

  RefPtr<DOMRequest> request = new DOMRequest(GetOwner());
  RefPtr<MobileConnectionCallback> requestCallback =
    new MobileConnectionCallback(GetOwner(), request);

  nsresult rv =
    mMobileConnection->SetPreferredNetworkType(type, requestCallback);
  if (NS_FAILED(rv)) {
    aRv.Throw(rv);
    return nullptr;
  }

  return request.forget();
}

already_AddRefed<DOMRequest>
MobileConnection::GetPreferredNetworkType(ErrorResult& aRv)
{
  if (!mMobileConnection) {
    aRv.Throw(NS_ERROR_FAILURE);
    return nullptr;
  }

  RefPtr<DOMRequest> request = new DOMRequest(GetOwner());
  RefPtr<MobileConnectionCallback> requestCallback =
    new MobileConnectionCallback(GetOwner(), request);

  nsresult rv = mMobileConnection->GetPreferredNetworkType(requestCallback);
  if (NS_FAILED(rv)) {
    aRv.Throw(rv);
    return nullptr;
  }

  return request.forget();
}

already_AddRefed<DOMRequest>
MobileConnection::SetRoamingPreference(MobileRoamingMode& aMode,
                                       ErrorResult& aRv)
{
  if (!mMobileConnection) {
    aRv.Throw(NS_ERROR_FAILURE);
    return nullptr;
  }

  int32_t mode = static_cast<int32_t>(aMode);

  RefPtr<DOMRequest> request = new DOMRequest(GetOwner());
  RefPtr<MobileConnectionCallback> requestCallback =
    new MobileConnectionCallback(GetOwner(), request);

  nsresult rv = mMobileConnection->SetRoamingPreference(mode, requestCallback);
  if (NS_FAILED(rv)) {
    aRv.Throw(rv);
    return nullptr;
  }

  return request.forget();
}

already_AddRefed<DOMRequest>
MobileConnection::GetRoamingPreference(ErrorResult& aRv)
{
  if (!mMobileConnection) {
    aRv.Throw(NS_ERROR_FAILURE);
    return nullptr;
  }

  RefPtr<DOMRequest> request = new DOMRequest(GetOwner());
  RefPtr<MobileConnectionCallback> requestCallback =
    new MobileConnectionCallback(GetOwner(), request);

  nsresult rv = mMobileConnection->GetRoamingPreference(requestCallback);
  if (NS_FAILED(rv)) {
    aRv.Throw(rv);
    return nullptr;
  }

  return request.forget();
}

already_AddRefed<DOMRequest>
MobileConnection::SetVoicePrivacyMode(bool aEnabled, ErrorResult& aRv)
{
  if (!mMobileConnection) {
    aRv.Throw(NS_ERROR_FAILURE);
    return nullptr;
  }

  RefPtr<DOMRequest> request = new DOMRequest(GetOwner());
  RefPtr<MobileConnectionCallback> requestCallback =
    new MobileConnectionCallback(GetOwner(), request);

  nsresult rv =
    mMobileConnection->SetVoicePrivacyMode(aEnabled, requestCallback);
  if (NS_FAILED(rv)) {
    aRv.Throw(rv);
    return nullptr;
  }

  return request.forget();
}

already_AddRefed<DOMRequest>
MobileConnection::GetVoicePrivacyMode(ErrorResult& aRv)
{
  if (!mMobileConnection) {
    aRv.Throw(NS_ERROR_FAILURE);
    return nullptr;
  }

  RefPtr<DOMRequest> request = new DOMRequest(GetOwner());
  RefPtr<MobileConnectionCallback> requestCallback =
    new MobileConnectionCallback(GetOwner(), request);

  nsresult rv = mMobileConnection->GetVoicePrivacyMode(requestCallback);
  if (NS_FAILED(rv)) {
    aRv.Throw(rv);
    return nullptr;
  }

  return request.forget();
}

already_AddRefed<DOMRequest>
MobileConnection::GetCallForwardingOption(uint16_t aReason, ErrorResult& aRv)
{
  if (!mMobileConnection) {
    aRv.Throw(NS_ERROR_FAILURE);
    return nullptr;
  }

  RefPtr<DOMRequest> request = new DOMRequest(GetOwner());

  if (!IsValidCallForwardingReason(aReason)) {
    nsresult rv = NotifyError(request, MOBILECONN_ERROR_INVALID_PARAMETER);
    if (NS_FAILED(rv)) {
      aRv.Throw(rv);
      return nullptr;
    }
    return request.forget();
  }

  RefPtr<MobileConnectionCallback> requestCallback =
    new MobileConnectionCallback(GetOwner(), request);

  nsresult rv = mMobileConnection->GetCallForwarding(aReason, requestCallback);
  if (NS_FAILED(rv)) {
    aRv.Throw(rv);
    return nullptr;
  }

  return request.forget();
}

already_AddRefed<DOMRequest>
MobileConnection::SetCallForwardingOption(const MozCallForwardingOptions& aOptions,
                                          ErrorResult& aRv)
{
  if (!mMobileConnection) {
    aRv.Throw(NS_ERROR_FAILURE);
    return nullptr;
  }

  RefPtr<DOMRequest> request = new DOMRequest(GetOwner());

  if (!IsValidCallForwardingOptions(aOptions)) {
    nsresult rv = NotifyError(request, MOBILECONN_ERROR_INVALID_PARAMETER);
    if (NS_FAILED(rv)) {
      aRv.Throw(rv);
      return nullptr;
    }
    return request.forget();
  }

  // Fill in optional attributes.
  uint16_t timeSeconds = 0;
  if (aOptions.mTimeSeconds.WasPassed() && !aOptions.mTimeSeconds.Value().IsNull()) {
    timeSeconds = aOptions.mTimeSeconds.Value().Value();
  }
  uint16_t serviceClass = nsIMobileConnection::ICC_SERVICE_CLASS_NONE;
  if (aOptions.mServiceClass.WasPassed() && !aOptions.mServiceClass.Value().IsNull()) {
    serviceClass = aOptions.mServiceClass.Value().Value();
  }
  nsAutoString number;
  if (aOptions.mNumber.WasPassed()) {
    number = aOptions.mNumber.Value();
  } else {
    number.SetIsVoid(true);
  }

  RefPtr<MobileConnectionCallback> requestCallback =
    new MobileConnectionCallback(GetOwner(), request);

  nsresult rv = mMobileConnection->SetCallForwarding(aOptions.mAction.Value().Value(),
                                                     aOptions.mReason.Value().Value(),
                                                     number,
                                                     timeSeconds,
                                                     serviceClass,
                                                     requestCallback);
  if (NS_FAILED(rv)) {
    aRv.Throw(rv);
    return nullptr;
  }

  return request.forget();
}

already_AddRefed<DOMRequest>
MobileConnection::GetCallBarringOption(const MozCallBarringOptions& aOptions,
                                       ErrorResult& aRv)
{
  if (!mMobileConnection) {
    aRv.Throw(NS_ERROR_FAILURE);
    return nullptr;
  }

  RefPtr<DOMRequest> request = new DOMRequest(GetOwner());

  if (!IsValidCallBarringOptions(aOptions, false)) {
    nsresult rv = NotifyError(request, MOBILECONN_ERROR_INVALID_PARAMETER);
    if (NS_FAILED(rv)) {
      aRv.Throw(rv);
      return nullptr;
    }
    return request.forget();
  }

  // Fill in optional attributes.
  nsAutoString password;
  if (aOptions.mPassword.WasPassed()) {
    password = aOptions.mPassword.Value();
  } else {
    password.SetIsVoid(true);
  }

  RefPtr<MobileConnectionCallback> requestCallback =
    new MobileConnectionCallback(GetOwner(), request);

  nsresult rv = mMobileConnection->GetCallBarring(aOptions.mProgram.Value().Value(),
                                                  password,
                                                  aOptions.mServiceClass.Value().Value(),
                                                  requestCallback);
  if (NS_FAILED(rv)) {
    aRv.Throw(rv);
    return nullptr;
  }

  return request.forget();
}

already_AddRefed<DOMRequest>
MobileConnection::SetCallBarringOption(const MozCallBarringOptions& aOptions,
                                       ErrorResult& aRv)
{
  if (!mMobileConnection) {
    aRv.Throw(NS_ERROR_FAILURE);
    return nullptr;
  }

  RefPtr<DOMRequest> request = new DOMRequest(GetOwner());

  if (!IsValidCallBarringOptions(aOptions, true)) {
    nsresult rv = NotifyError(request, MOBILECONN_ERROR_INVALID_PARAMETER);
    if (NS_FAILED(rv)) {
      aRv.Throw(rv);
      return nullptr;
    }
    return request.forget();
  }

  RefPtr<MobileConnectionCallback> requestCallback =
    new MobileConnectionCallback(GetOwner(), request);

  nsresult rv = mMobileConnection->SetCallBarring(aOptions.mProgram.Value().Value(),
                                                  aOptions.mEnabled.Value().Value(),
                                                  aOptions.mPassword.Value(),
                                                  aOptions.mServiceClass.Value().Value(),
                                                  requestCallback);
  if (NS_FAILED(rv)) {
    aRv.Throw(rv);
    return nullptr;
  }

  return request.forget();
}

already_AddRefed<DOMRequest>
MobileConnection::ChangeCallBarringPassword(const MozCallBarringOptions& aOptions,
                                            ErrorResult& aRv)
{
  if (!mMobileConnection) {
    aRv.Throw(NS_ERROR_FAILURE);
    return nullptr;
  }

  RefPtr<DOMRequest> request = new DOMRequest(GetOwner());

  if (!aOptions.mPin.WasPassed() || aOptions.mPin.Value().IsVoid() ||
      !aOptions.mNewPin.WasPassed() || aOptions.mNewPin.Value().IsVoid() ||
      !IsValidPassword(aOptions.mPin.Value()) ||
      !IsValidPassword(aOptions.mNewPin.Value())) {
    nsresult rv = NotifyError(request, MOBILECONN_ERROR_INVALID_PASSWORD);
    if (NS_FAILED(rv)) {
      aRv.Throw(rv);
      return nullptr;
    }
    return request.forget();
  }

  RefPtr<MobileConnectionCallback> requestCallback =
    new MobileConnectionCallback(GetOwner(), request);

  nsresult rv =
    mMobileConnection->ChangeCallBarringPassword(aOptions.mPin.Value(),
                                                 aOptions.mNewPin.Value(),
                                                 requestCallback);
  if (NS_FAILED(rv)) {
    aRv.Throw(rv);
    return nullptr;
  }

  return request.forget();
}

already_AddRefed<DOMRequest>
MobileConnection::GetCallWaitingOption(ErrorResult& aRv)
{
  if (!mMobileConnection) {
    aRv.Throw(NS_ERROR_FAILURE);
    return nullptr;
  }

  RefPtr<DOMRequest> request = new DOMRequest(GetOwner());
  RefPtr<MobileConnectionCallback> requestCallback =
    new MobileConnectionCallback(GetOwner(), request);

  nsresult rv = mMobileConnection->GetCallWaiting(requestCallback);
  if (NS_FAILED(rv)) {
    aRv.Throw(rv);
    return nullptr;
  }

  return request.forget();
}

already_AddRefed<DOMRequest>
MobileConnection::SetCallWaitingOption(bool aEnabled, ErrorResult& aRv)
{
  if (!mMobileConnection) {
    aRv.Throw(NS_ERROR_FAILURE);
    return nullptr;
  }

  RefPtr<DOMRequest> request = new DOMRequest(GetOwner());
  RefPtr<MobileConnectionCallback> requestCallback =
    new MobileConnectionCallback(GetOwner(), request);

  nsresult rv = mMobileConnection->SetCallWaiting(aEnabled,
                                                  nsIMobileConnection::ICC_SERVICE_CLASS_VOICE,
                                                  requestCallback);
  if (NS_FAILED(rv)) {
    aRv.Throw(rv);
    return nullptr;
  }

  return request.forget();
}

already_AddRefed<DOMRequest>
MobileConnection::GetCallingLineIdRestriction(ErrorResult& aRv)
{
  if (!mMobileConnection) {
    aRv.Throw(NS_ERROR_FAILURE);
    return nullptr;
  }

  RefPtr<DOMRequest> request = new DOMRequest(GetOwner());
  RefPtr<MobileConnectionCallback> requestCallback =
    new MobileConnectionCallback(GetOwner(), request);

  nsresult rv =
    mMobileConnection->GetCallingLineIdRestriction(requestCallback);
  if (NS_FAILED(rv)) {
    aRv.Throw(rv);
    return nullptr;
  }

  return request.forget();
}

already_AddRefed<DOMRequest>
MobileConnection::SetCallingLineIdRestriction(uint16_t aMode,
                                              ErrorResult& aRv)
{
  if (!mMobileConnection) {
    aRv.Throw(NS_ERROR_FAILURE);
    return nullptr;
  }

  RefPtr<DOMRequest> request = new DOMRequest(GetOwner());
  RefPtr<MobileConnectionCallback> requestCallback =
    new MobileConnectionCallback(GetOwner(), request);

  nsresult rv =
    mMobileConnection->SetCallingLineIdRestriction(aMode, requestCallback);
  if (NS_FAILED(rv)) {
    aRv.Throw(rv);
    return nullptr;
  }

  return request.forget();
}

already_AddRefed<DOMRequest>
MobileConnection::ExitEmergencyCbMode(ErrorResult& aRv)
{
  if (!mMobileConnection) {
    aRv.Throw(NS_ERROR_FAILURE);
    return nullptr;
  }

  RefPtr<DOMRequest> request = new DOMRequest(GetOwner());
  RefPtr<MobileConnectionCallback> requestCallback =
    new MobileConnectionCallback(GetOwner(), request);

  nsresult rv = mMobileConnection->ExitEmergencyCbMode(requestCallback);
  if (NS_FAILED(rv)) {
    aRv.Throw(rv);
    return nullptr;
  }

  return request.forget();
}

already_AddRefed<DOMRequest>
MobileConnection::SetRadioEnabled(bool aEnabled, ErrorResult& aRv)
{
  if (!mMobileConnection) {
    aRv.Throw(NS_ERROR_FAILURE);
    return nullptr;
  }

  RefPtr<DOMRequest> request = new DOMRequest(GetOwner());
  RefPtr<MobileConnectionCallback> requestCallback =
    new MobileConnectionCallback(GetOwner(), request);

  nsresult rv = mMobileConnection->SetRadioEnabled(aEnabled, requestCallback);
  if (NS_FAILED(rv)) {
    aRv.Throw(rv);
    return nullptr;
  }

  return request.forget();
}

// nsIMobileConnectionListener

NS_IMETHODIMP
MobileConnection::NotifyVoiceChanged()
{
  if (!CheckPermission("mobileconnection")) {
    return NS_OK;
  }

  UpdateVoice();

  return DispatchTrustedEvent(NS_LITERAL_STRING("voicechange"));
}

NS_IMETHODIMP
MobileConnection::NotifyDataChanged()
{
  if (!CheckPermission("mobileconnection")) {
    return NS_OK;
  }

  UpdateData();

  return DispatchTrustedEvent(NS_LITERAL_STRING("datachange"));
}

NS_IMETHODIMP
MobileConnection::NotifyDataError(const nsAString& aMessage)
{
  if (!CheckPermission("mobileconnection")) {
    return NS_OK;
  }

  DataErrorEventInit init;
  init.mBubbles = false;
  init.mCancelable = false;
  init.mMessage = aMessage;

  RefPtr<DataErrorEvent> event =
    DataErrorEvent::Constructor(this, NS_LITERAL_STRING("dataerror"), init);

  return DispatchTrustedEvent(event);
}

NS_IMETHODIMP
MobileConnection::NotifyCFStateChanged(unsigned short aAction,
                                       unsigned short aReason,
                                       const nsAString& aNumber,
                                       unsigned short aSeconds,
                                       unsigned short aServiceClass)
{
  if (!CheckPermission("mobileconnection")) {
    return NS_OK;
  }

  CFStateChangeEventInit init;
  init.mBubbles = false;
  init.mCancelable = false;
  init.mAction = aAction;
  init.mReason = aReason;
  init.mNumber = aNumber;
  init.mTimeSeconds = aSeconds;
  init.mServiceClass = aServiceClass;

  RefPtr<CFStateChangeEvent> event =
    CFStateChangeEvent::Constructor(this, NS_LITERAL_STRING("cfstatechange"), init);

  return DispatchTrustedEvent(event);
}

NS_IMETHODIMP
MobileConnection::NotifyEmergencyCbModeChanged(bool aActive,
                                               uint32_t aTimeoutMs)
{
  if (!CheckPermission("mobileconnection")) {
    return NS_OK;
  }

  MozEmergencyCbModeEventInit init;
  init.mBubbles = false;
  init.mCancelable = false;
  init.mActive = aActive;
  init.mTimeoutMs = aTimeoutMs;

  RefPtr<MozEmergencyCbModeEvent> event =
    MozEmergencyCbModeEvent::Constructor(this, NS_LITERAL_STRING("emergencycbmodechange"), init);

  return DispatchTrustedEvent(event);
}

NS_IMETHODIMP
MobileConnection::NotifyOtaStatusChanged(const nsAString& aStatus)
{
  if (!CheckPermission("mobileconnection")) {
    return NS_OK;
  }

  MozOtaStatusEventInit init;
  init.mBubbles = false;
  init.mCancelable = false;
  init.mStatus = aStatus;

  RefPtr<MozOtaStatusEvent> event =
    MozOtaStatusEvent::Constructor(this, NS_LITERAL_STRING("otastatuschange"), init);

  return DispatchTrustedEvent(event);
}

NS_IMETHODIMP
MobileConnection::NotifyRadioStateChanged()
{
  if (!CheckPermission("mobileconnection")) {
    return NS_OK;
  }

  return DispatchTrustedEvent(NS_LITERAL_STRING("radiostatechange"));
}

NS_IMETHODIMP
MobileConnection::NotifyClirModeChanged(uint32_t aMode)
{
  if (!CheckPermission("mobileconnection")) {
    return NS_OK;
  }

  MozClirModeEventInit init;
  init.mBubbles = false;
  init.mCancelable = false;
  init.mMode = aMode;

  RefPtr<MozClirModeEvent> event =
    MozClirModeEvent::Constructor(this, NS_LITERAL_STRING("clirmodechange"), init);

  return DispatchTrustedEvent(event);
}

NS_IMETHODIMP
MobileConnection::NotifyLastKnownNetworkChanged()
{
  return NS_OK;
}

NS_IMETHODIMP
MobileConnection::NotifyLastKnownHomeNetworkChanged()
{
  return NS_OK;
}

NS_IMETHODIMP
MobileConnection::NotifyNetworkSelectionModeChanged()
{
  return NS_OK;
}

NS_IMETHODIMP
MobileConnection::NotifyDeviceIdentitiesChanged()
{
  // To be supported when bug 1222870 is required in m-c.
  return NS_OK;
}

// nsIIccListener

NS_IMETHODIMP
MobileConnection::NotifyStkCommand(nsIStkProactiveCmd *aStkProactiveCmd)
{
  return NS_OK;
}

NS_IMETHODIMP
MobileConnection::NotifyStkSessionEnd()
{
  return NS_OK;
}

NS_IMETHODIMP
MobileConnection::NotifyCardStateChanged()
{
  return NS_OK;
}

NS_IMETHODIMP
MobileConnection::NotifyIccInfoChanged()
{
  if (!CheckPermission("mobileconnection")) {
    return NS_OK;
  }

  if (!UpdateIccId()) {
    return NS_OK;
  }

  RefPtr<AsyncEventDispatcher> asyncDispatcher =
    new AsyncEventDispatcher(this, NS_LITERAL_STRING("iccchange"), false);

  return asyncDispatcher->PostDOMEvent();
}