зеркало из https://github.com/mozilla/gecko-dev.git
83 строки
2.9 KiB
C++
83 строки
2.9 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "ImageBlocker.h"
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#include "nsIPermissionManager.h"
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#include "nsContentUtils.h"
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#include "mozilla/Unused.h"
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using namespace mozilla;
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using namespace mozilla::image;
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bool ImageBlocker::sInitialized = false;
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int32_t ImageBlocker::sImagePermission = nsIPermissionManager::ALLOW_ACTION;
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NS_IMPL_ISUPPORTS(ImageBlocker, nsIContentPolicy)
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ImageBlocker::ImageBlocker()
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{
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if (!sInitialized) {
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Preferences::AddIntVarCache(&sImagePermission,
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"permissions.default.image");
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sInitialized = true;
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}
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}
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NS_IMETHODIMP
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ImageBlocker::ShouldLoad(uint32_t aContentType,
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nsIURI* aContentLocation,
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nsIURI* aRequestOrigin,
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nsISupports* aContext,
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const nsACString& aMimeTypeGuess,
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nsISupports* aExtra,
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nsIPrincipal* aRequestPrincipal,
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int16_t* aShouldLoad)
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{
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MOZ_ASSERT(aContentType == nsContentUtils::InternalContentPolicyTypeToExternal(aContentType),
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"We should only see external content policy types here.");
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*aShouldLoad = nsIContentPolicy::ACCEPT;
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if (!aContentLocation) {
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return NS_OK;
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}
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nsAutoCString scheme;
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Unused << aContentLocation->GetScheme(scheme);
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if (!scheme.LowerCaseEqualsLiteral("ftp") &&
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!scheme.LowerCaseEqualsLiteral("http") &&
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!scheme.LowerCaseEqualsLiteral("https")) {
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return NS_OK;
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}
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// Block loading images depending on the permissions.default.image pref.
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if (aContentType == nsIContentPolicy::TYPE_IMAGE ||
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aContentType == nsIContentPolicy::TYPE_IMAGESET) {
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*aShouldLoad = (sImagePermission == nsIPermissionManager::ALLOW_ACTION) ?
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nsIContentPolicy::ACCEPT :
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nsIContentPolicy::REJECT_TYPE;
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}
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return NS_OK;
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}
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NS_IMETHODIMP
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ImageBlocker::ShouldProcess(uint32_t aContentType,
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nsIURI* aContentLocation,
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nsIURI* aRequestOrigin,
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nsISupports* aRequestingContext,
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const nsACString& aMimeTypeGuess,
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nsISupports* aExtra,
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nsIPrincipal* aRequestPrincipal,
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int16_t* aShouldProcess)
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{
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MOZ_ASSERT(aContentType == nsContentUtils::InternalContentPolicyTypeToExternal(aContentType),
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"We should only see external content policy types here.");
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return ShouldLoad(aContentType, aContentLocation, aRequestOrigin,
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aRequestingContext, aMimeTypeGuess, aExtra,
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aRequestPrincipal, aShouldProcess);
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}
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