Add m-esr52 at 52.6.0

1 files changed, 108 insertions, 0 deletions

diff --git a/embedding/browser/nsWebBrowserContentPolicy.cpp b/embedding/browser/nsWebBrowserContentPolicy.cpp
new file mode 100644
index 000000000..f6b17a197
--- /dev/null
+++ b/embedding/browser/nsWebBrowserContentPolicy.cpp
@@ -0,0 +1,108 @@
+/* -*- 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 "nsIContentViewer.h"
+
+nsWebBrowserContentPolicy::nsWebBrowserContentPolicy()
+{
+  MOZ_COUNT_CTOR(nsWebBrowserContentPolicy);
+}
+
+nsWebBrowserContentPolicy::~nsWebBrowserContentPolicy()
+{
+  MOZ_COUNT_DTOR(nsWebBrowserContentPolicy);
+}
+
+NS_IMPL_ISUPPORTS(nsWebBrowserContentPolicy, nsIContentPolicy)
+
+NS_IMETHODIMP
+nsWebBrowserContentPolicy::ShouldLoad(uint32_t aContentType,
+                                      nsIURI* aContentLocation,
+                                      nsIURI* aRequestingLocation,
+                                      nsISupports* aRequestingContext,
+                                      const nsACString& aMimeGuess,
+                                      nsISupports* aExtra,
+                                      nsIPrincipal* aRequestPrincipal,
+                                      int16_t* aShouldLoad)
+{
+  NS_PRECONDITION(aShouldLoad, "Null out param");
+
+  MOZ_ASSERT(aContentType == nsContentUtils::InternalContentPolicyTypeToExternal(aContentType),
+             "We should only see external content policy types here.");
+
+  *aShouldLoad = nsIContentPolicy::ACCEPT;
+
+  nsIDocShell* shell = NS_CP_GetDocShellFromContext(aRequestingContext);
+  /* We're going to dereference shell, so make sure it isn't null */
+  if (!shell) {
+    return NS_OK;
+  }
+
+  nsresult rv;
+  bool allowed = true;
+
+  switch (aContentType) {
+    case nsIContentPolicy::TYPE_SCRIPT:
+      rv = shell->GetAllowJavascript(&allowed);
+      break;
+    case nsIContentPolicy::TYPE_SUBDOCUMENT:
+      rv = shell->GetAllowSubframes(&allowed);
+      break;
+#if 0
+    /* XXXtw: commented out in old code; add during conpol phase 2 */
+    case nsIContentPolicy::TYPE_REFRESH:
+      rv = shell->GetAllowMetaRedirects(&allowed); /* meta _refresh_ */
+      break;
+#endif
+    case nsIContentPolicy::TYPE_IMAGE:
+    case nsIContentPolicy::TYPE_IMAGESET:
+      rv = shell->GetAllowImages(&allowed);
+      break;
+    default:
+      return NS_OK;
+  }
+
+  if (NS_SUCCEEDED(rv) && !allowed) {
+    *aShouldLoad = nsIContentPolicy::REJECT_TYPE;
+  }
+  return rv;
+}
+
+NS_IMETHODIMP
+nsWebBrowserContentPolicy::ShouldProcess(uint32_t aContentType,
+                                         nsIURI* aContentLocation,
+                                         nsIURI* aRequestingLocation,
+                                         nsISupports* aRequestingContext,
+                                         const nsACString& aMimeGuess,
+                                         nsISupports* aExtra,
+                                         nsIPrincipal* aRequestPrincipal,
+                                         int16_t* aShouldProcess)
+{
+  NS_PRECONDITION(aShouldProcess, "Null out param");
+
+  MOZ_ASSERT(aContentType == nsContentUtils::InternalContentPolicyTypeToExternal(aContentType),
+             "We should only see external content policy types here.");
+
+  *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 (aContentType != nsIContentPolicy::TYPE_OBJECT) {
+    return NS_OK;
+  }
+
+  nsIDocShell* shell = NS_CP_GetDocShellFromContext(aRequestingContext);
+  if (shell && (!shell->PluginsAllowedInCurrentDoc())) {
+    *aShouldProcess = nsIContentPolicy::REJECT_TYPE;
+  }
+
+  return NS_OK;
+}