From 0ebf5bdf043a27fd3dfb7f92e0cb63d88954c44d Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Fri, 19 Apr 2024 03:47:29 +0200
Subject: Adding upstream version 115.8.0esr.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 .../browser/nsWebBrowserContentPolicy.cpp          | 87 ++++++++++++++++++++++
 1 file changed, 87 insertions(+)
 create mode 100644 toolkit/components/browser/nsWebBrowserContentPolicy.cpp

(limited to 'toolkit/components/browser/nsWebBrowserContentPolicy.cpp')

diff --git a/toolkit/components/browser/nsWebBrowserContentPolicy.cpp b/toolkit/components/browser/nsWebBrowserContentPolicy.cpp
new file mode 100644
index 0000000000..fcb8af485c
--- /dev/null
+++ b/toolkit/components/browser/nsWebBrowserContentPolicy.cpp
@@ -0,0 +1,87 @@
+/* -*- 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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