mailnews_ffi_glue.cpp

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/* 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 "mailnews_ffi_glue.h"

#include "mozilla/LoadInfo.h"

#include "mozilla/net/CookieJarSettings.h"

#include "nsCOMPtr.h"

#include "nsContentUtils.h"

using namespace mozilla::net;

extern "C" nsresult new_loadinfo_with_cookie_settings(

    nsIPrincipal* aLoadingPrincipal, nsIPrincipal* aTriggeringPrincipal,

    nsINode* aLoadingNode, nsSecurityFlags aSecurityFlags,

    nsContentPolicyType aContentPolicyType, uint32_t aSandboxFlags,

    nsILoadInfo** outLoadInfo) {

  // The documentation for the flavor of `LoadInfo::Create` we use below

  // specifies that `aLoadingPrincipal` must not be null.

  NS_ENSURE_ARG_POINTER(aLoadingPrincipal);

  nsCOMPtr<nsILoadInfo> loadInfo = MOZ_TRY(LoadInfo::Create(

      aLoadingPrincipal, aTriggeringPrincipal, aLoadingNode, aSecurityFlags,

      aContentPolicyType, mozilla::Maybe<mozilla::dom::ClientInfo>(),

      mozilla::Maybe<mozilla::dom::ServiceWorkerDescriptor>(), aSandboxFlags));

  bool shouldResistFingerprinting =

      nsContentUtils::ShouldResistFingerprinting_dangerous(

          aLoadingPrincipal,

          "We don't have a CookieJarSettings yet since we're creating it",

          mozilla::RFPTarget::IsAlwaysEnabledForPrecompute);

  // `CookieJarSettings::Create` takes one of two modes: either `eRegular` or

  // `ePrivate`, which define the behavior to follow for allowing or rejecting

  // cookies. Looking at other places where this method is called, `ePrivate`

  // seems strongly tied with private browsing, which isn't a thing in

  // Thunderbird.

//

  // This does NOT conflict with the user's cookie settings, i.e. cookies will

  // still be blocked if cookies are disabled in the settings or there's a

  // blocking exception for the site.

  nsCOMPtr<nsICookieJarSettings> cookieJar = CookieJarSettings::Create(

      CookieJarSettings::eRegular, shouldResistFingerprinting);

  MOZ_TRY(loadInfo->SetCookieJarSettings(cookieJar));

  loadInfo.forget(outLoadInfo);

  return NS_OK;