C++ WorkerPrivate::OpaqueInterceptionEnabled方法代码示例

void
RespondWithHandler::ResolvedCallback(JSContext* aCx, JS::Handle<JS::Value> aValue)
{
  AutoCancel autoCancel(this);

  if (!aValue.isObject()) {
    NS_WARNING("FetchEvent::RespondWith was passed a promise resolved to a non-Object value");
    return;
  }

  nsRefPtr<Response> response;
  nsresult rv = UNWRAP_OBJECT(Response, &aValue.toObject(), response);
  if (NS_FAILED(rv)) {
    return;
  }

  WorkerPrivate* worker = GetCurrentThreadWorkerPrivate();
  MOZ_ASSERT(worker);
  worker->AssertIsOnWorkerThread();

  // Allow opaque response interception to be disabled until we can ensure the
  // security implications are not a complete disaster.
  if (response->Type() == ResponseType::Opaque &&
      !worker->OpaqueInterceptionEnabled()) {
    return;
  }

  // Section 4.2, step 2.2 "If either response's type is "opaque" and request's
  // mode is not "no-cors" or response's type is error, return a network error."
  if (((response->Type() == ResponseType::Opaque) && (mRequestMode != RequestMode::No_cors)) ||
      response->Type() == ResponseType::Error) {
    return;
  }

  if (NS_WARN_IF(response->BodyUsed())) {
    return;
  }

  nsRefPtr<InternalResponse> ir = response->GetInternalResponse();
  if (NS_WARN_IF(!ir)) {
    return;
  }

  nsAutoPtr<RespondWithClosure> closure(
      new RespondWithClosure(mInterceptedChannel, ir, worker->GetChannelInfo()));
  nsCOMPtr<nsIInputStream> body;
  ir->GetInternalBody(getter_AddRefs(body));
  // Errors and redirects may not have a body.
  if (body) {
    response->SetBodyUsed();

    nsCOMPtr<nsIOutputStream> responseBody;
    rv = mInterceptedChannel->GetResponseBody(getter_AddRefs(responseBody));
    if (NS_WARN_IF(NS_FAILED(rv))) {
      return;
    }

    nsCOMPtr<nsIEventTarget> stsThread = do_GetService(NS_STREAMTRANSPORTSERVICE_CONTRACTID, &rv);
    if (NS_WARN_IF(!stsThread)) {
      return;
    }

    // XXXnsm, Fix for Bug 1141332 means that if we decide to make this
    // streaming at some point, we'll need a different solution to that bug.
    rv = NS_AsyncCopy(body, responseBody, stsThread, NS_ASYNCCOPY_VIA_READSEGMENTS, 4096,
                      RespondWithCopyComplete, closure.forget());
    if (NS_WARN_IF(NS_FAILED(rv))) {
      return;
    }
  } else {
    RespondWithCopyComplete(closure.forget(), NS_OK);
  }

  MOZ_ASSERT(!closure);
  autoCancel.Reset();
}

void
RespondWithHandler::ResolvedCallback(JSContext* aCx, JS::Handle<JS::Value> aValue)
{
  AutoCancel autoCancel(this);

  if (!aValue.isObject()) {
    NS_WARNING("FetchEvent::RespondWith was passed a promise resolved to a non-Object value");
    return;
  }

  RefPtr<Response> response;
  nsresult rv = UNWRAP_OBJECT(Response, &aValue.toObject(), response);
  if (NS_FAILED(rv)) {
    return;
  }

  WorkerPrivate* worker = GetCurrentThreadWorkerPrivate();
  MOZ_ASSERT(worker);
  worker->AssertIsOnWorkerThread();

  // Allow opaque response interception to be disabled until we can ensure the
  // security implications are not a complete disaster.
  if (response->Type() == ResponseType::Opaque &&
      !worker->OpaqueInterceptionEnabled()) {
    autoCancel.SetCancelStatus(NS_ERROR_OPAQUE_INTERCEPTION_DISABLED);
    return;
  }

  // Section "HTTP Fetch", step 2.2:
  //  If one of the following conditions is true, return a network error:
  //    * response's type is "error".
  //    * request's mode is not "no-cors" and response's type is "opaque".
  //    * request is not a navigation request and response's type is
  //      "opaqueredirect".

  if (response->Type() == ResponseType::Error) {
    autoCancel.SetCancelStatus(NS_ERROR_INTERCEPTED_ERROR_RESPONSE);
    return;
  }

  MOZ_ASSERT_IF(mIsClientRequest, mRequestMode == RequestMode::Same_origin);

  if (response->Type() == ResponseType::Opaque && mRequestMode != RequestMode::No_cors) {
    autoCancel.SetCancelStatus(NS_ERROR_BAD_OPAQUE_INTERCEPTION_REQUEST_MODE);
    return;
  }

  if (!mIsNavigationRequest && response->Type() == ResponseType::Opaqueredirect) {
    autoCancel.SetCancelStatus(NS_ERROR_BAD_OPAQUE_REDIRECT_INTERCEPTION);
    return;
  }

  if (NS_WARN_IF(response->BodyUsed())) {
    autoCancel.SetCancelStatus(NS_ERROR_INTERCEPTED_USED_RESPONSE);
    return;
  }

  RefPtr<InternalResponse> ir = response->GetInternalResponse();
  if (NS_WARN_IF(!ir)) {
    return;
  }

  nsAutoPtr<RespondWithClosure> closure(new RespondWithClosure(mInterceptedChannel, ir,
                                                               worker->GetChannelInfo(),
                                                               mScriptSpec));
  nsCOMPtr<nsIInputStream> body;
  ir->GetUnfilteredBody(getter_AddRefs(body));
  // Errors and redirects may not have a body.
  if (body) {
    response->SetBodyUsed();

    nsCOMPtr<nsIOutputStream> responseBody;
    rv = mInterceptedChannel->GetResponseBody(getter_AddRefs(responseBody));
    if (NS_WARN_IF(NS_FAILED(rv))) {
      return;
    }

    nsCOMPtr<nsIEventTarget> stsThread = do_GetService(NS_STREAMTRANSPORTSERVICE_CONTRACTID, &rv);
    if (NS_WARN_IF(!stsThread)) {
      return;
    }

    // XXXnsm, Fix for Bug 1141332 means that if we decide to make this
    // streaming at some point, we'll need a different solution to that bug.
    rv = NS_AsyncCopy(body, responseBody, stsThread, NS_ASYNCCOPY_VIA_READSEGMENTS, 4096,
                      RespondWithCopyComplete, closure.forget());
    if (NS_WARN_IF(NS_FAILED(rv))) {
      return;
    }
  } else {
    RespondWithCopyComplete(closure.forget(), NS_OK);
  }

  MOZ_ASSERT(!closure);
  autoCancel.Reset();
  mRequestWasHandled = true;
}

void
RespondWithHandler::ResolvedCallback(JSContext* aCx, JS::Handle<JS::Value> aValue)
{
  AutoCancel autoCancel(this, mRequestURL);

  if (!aValue.isObject()) {
    NS_WARNING("FetchEvent::RespondWith was passed a promise resolved to a non-Object value");

    nsCString sourceSpec;
    uint32_t line = 0;
    uint32_t column = 0;
    nsString valueString;
    ExtractErrorValues(aCx, aValue, sourceSpec, &line, &column, valueString);

    autoCancel.SetCancelMessageAndLocation(sourceSpec, line, column,
                                           NS_LITERAL_CSTRING("InterceptedNonResponseWithURL"),
                                           mRequestURL, valueString);
    return;
  }

  RefPtr<Response> response;
  nsresult rv = UNWRAP_OBJECT(Response, &aValue.toObject(), response);
  if (NS_FAILED(rv)) {
    nsCString sourceSpec;
    uint32_t line = 0;
    uint32_t column = 0;
    nsString valueString;
    ExtractErrorValues(aCx, aValue, sourceSpec, &line, &column, valueString);

    autoCancel.SetCancelMessageAndLocation(sourceSpec, line, column,
                                           NS_LITERAL_CSTRING("InterceptedNonResponseWithURL"),
                                           mRequestURL, valueString);
    return;
  }

  WorkerPrivate* worker = GetCurrentThreadWorkerPrivate();
  MOZ_ASSERT(worker);
  worker->AssertIsOnWorkerThread();

  // Allow opaque response interception to be disabled until we can ensure the
  // security implications are not a complete disaster.
  if (response->Type() == ResponseType::Opaque &&
      !worker->OpaqueInterceptionEnabled()) {
    autoCancel.SetCancelMessage(
      NS_LITERAL_CSTRING("OpaqueInterceptionDisabledWithURL"), mRequestURL);
    return;
  }

  // Section "HTTP Fetch", step 2.2:
  //  If one of the following conditions is true, return a network error:
  //    * response's type is "error".
  //    * request's mode is not "no-cors" and response's type is "opaque".
  //    * request is not a navigation request and response's type is
  //      "opaqueredirect".

  if (response->Type() == ResponseType::Error) {
    autoCancel.SetCancelMessage(
      NS_LITERAL_CSTRING("InterceptedErrorResponseWithURL"), mRequestURL);
    return;
  }

  MOZ_ASSERT_IF(mIsClientRequest, mRequestMode == RequestMode::Same_origin);

  if (response->Type() == ResponseType::Opaque && mRequestMode != RequestMode::No_cors) {
    uint32_t mode = static_cast<uint32_t>(mRequestMode);
    NS_ConvertASCIItoUTF16 modeString(RequestModeValues::strings[mode].value,
                                      RequestModeValues::strings[mode].length);

    autoCancel.SetCancelMessage(
      NS_LITERAL_CSTRING("BadOpaqueInterceptionRequestModeWithURL"),
      mRequestURL, modeString);
    return;
  }

  if (!mIsNavigationRequest && response->Type() == ResponseType::Opaqueredirect) {
    autoCancel.SetCancelMessage(
      NS_LITERAL_CSTRING("BadOpaqueRedirectInterceptionWithURL"), mRequestURL);
    return;
  }

  if (NS_WARN_IF(response->BodyUsed())) {
    autoCancel.SetCancelMessage(
      NS_LITERAL_CSTRING("InterceptedUsedResponseWithURL"), mRequestURL);
    return;
  }

  RefPtr<InternalResponse> ir = response->GetInternalResponse();
  if (NS_WARN_IF(!ir)) {
    return;
  }

  // When an opaque response is encountered, we need the original channel's principal
  // to reflect the final URL. Non-opaque responses are either same-origin or CORS-enabled
  // cross-origin responses, which are treated as same-origin by consumers.
  nsCString responseURL;
  if (response->Type() == ResponseType::Opaque) {
    ir->GetUnfilteredUrl(responseURL);
    if (NS_WARN_IF(responseURL.IsEmpty())) {
      return;
    }
//.........这里部分代码省略.........