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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 "nsWebBrowserContentPolicy.h"
#include "nsIDocShell.h"
#include "nsCOMPtr.h"
#include "nsContentPolicyUtils.h"
#include "nsNetUtil.h"
nsWebBrowserContentPolicy::nsWebBrowserContentPolicy() = default;
nsWebBrowserContentPolicy::~nsWebBrowserContentPolicy() = default;
NS_IMPL_ISUPPORTS(nsWebBrowserContentPolicy, nsIContentPolicy)
NS_IMETHODIMP
nsWebBrowserContentPolicy::ShouldLoad(nsIURI* aContentLocation,
nsILoadInfo* aLoadInfo,
const nsACString& aMimeGuess,
int16_t* aShouldLoad) {
MOZ_ASSERT(aShouldLoad, "Null out param");
ExtContentPolicyType contentType = aLoadInfo->GetExternalContentPolicyType();
*aShouldLoad = nsIContentPolicy::ACCEPT;
nsCOMPtr<nsISupports> context = aLoadInfo->GetLoadingContext();
nsIDocShell* shell = NS_CP_GetDocShellFromContext(context);
/* We're going to dereference shell, so make sure it isn't null */
if (!shell) {
return NS_OK;
}
nsresult rv;
bool allowed = true;
switch (contentType) {
case ExtContentPolicy::TYPE_SUBDOCUMENT:
rv = shell->GetAllowSubframes(&allowed);
break;
case ExtContentPolicy::TYPE_IMAGE:
case ExtContentPolicy::TYPE_IMAGESET:
rv = shell->GetAllowImages(&allowed);
break;
default:
return NS_OK;
}
if (NS_SUCCEEDED(rv) && !allowed) {
NS_SetRequestBlockingReason(
aLoadInfo, nsILoadInfo::BLOCKING_REASON_CONTENT_POLICY_WEB_BROWSER);
*aShouldLoad = nsIContentPolicy::REJECT_TYPE;
}
return rv;
}
NS_IMETHODIMP
nsWebBrowserContentPolicy::ShouldProcess(nsIURI* aContentLocation,
nsILoadInfo* aLoadInfo,
const nsACString& aMimeGuess,
int16_t* aShouldProcess) {
MOZ_ASSERT(aShouldProcess, "Null out param");
ExtContentPolicyType contentType = aLoadInfo->GetExternalContentPolicyType();
*aShouldProcess = nsIContentPolicy::ACCEPT;
// Object tags will always open channels with TYPE_OBJECT, but may end up
// loading with TYPE_IMAGE or TYPE_DOCUMENT as their final type, so we block
// actual-plugins at the process stage
if (contentType != ExtContentPolicy::TYPE_OBJECT) {
return NS_OK;
}
nsCOMPtr<nsISupports> context = aLoadInfo->GetLoadingContext();
nsIDocShell* shell = NS_CP_GetDocShellFromContext(context);
if (shell && (!shell->PluginsAllowedInCurrentDoc())) {
NS_SetRequestBlockingReason(
aLoadInfo, nsILoadInfo::BLOCKING_REASON_CONTENT_POLICY_WEB_BROWSER);
*aShouldProcess = nsIContentPolicy::REJECT_TYPE;
}
return NS_OK;
}
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