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-rw-r--r--dom/base/nsPluginArray.cpp154
1 files changed, 154 insertions, 0 deletions
diff --git a/dom/base/nsPluginArray.cpp b/dom/base/nsPluginArray.cpp
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+++ b/dom/base/nsPluginArray.cpp
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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 "nsPluginArray.h"
+
+#include "mozilla/dom/PluginArrayBinding.h"
+#include "mozilla/dom/PluginBinding.h"
+#include "mozilla/StaticPrefs_pdfjs.h"
+
+#include "nsMimeTypeArray.h"
+#include "nsPIDOMWindow.h"
+#include "nsGlobalWindowInner.h"
+#include "nsContentUtils.h"
+
+using namespace mozilla;
+using namespace mozilla::dom;
+
+// These plugin and mime types are hard-coded by the HTML spec.
+// The "main" plugin name is used with the only plugin that is
+// referenced by MIME types (via nsMimeType::GetEnabledPlugin).
+// The "extra" of the plugin names are associated with MIME types that
+// reference the main plugin.
+// This is all defined in the HTML spec, section 8.9.1.6
+// "PDF Viewing Support".
+static const nsLiteralString kMainPluginName = u"PDF Viewer"_ns;
+static const nsLiteralString kExtraPluginNames[] = {
+ u"Chrome PDF Viewer"_ns, u"Chromium PDF Viewer"_ns,
+ u"Microsoft Edge PDF Viewer"_ns, u"WebKit built-in PDF"_ns};
+static const nsLiteralString kMimeTypeNames[] = {u"application/pdf"_ns,
+ u"text/pdf"_ns};
+
+nsPluginArray::nsPluginArray(nsPIDOMWindowInner* aWindow) : mWindow(aWindow) {
+ // Create the hard-coded PDF plugin types that share MIME type arrays.
+ mPlugins[0] = MakeRefPtr<nsPluginElement>(this, aWindow, kMainPluginName);
+
+ mozilla::Array<RefPtr<nsMimeType>, 2> mimeTypes;
+ for (uint32_t i = 0; i < ArrayLength(kMimeTypeNames); ++i) {
+ mimeTypes[i] = MakeRefPtr<nsMimeType>(mPlugins[0], kMimeTypeNames[i]);
+ }
+ mMimeTypeArray = MakeRefPtr<nsMimeTypeArray>(aWindow, mimeTypes);
+
+ for (uint32_t i = 0; i < ArrayLength(kExtraPluginNames); ++i) {
+ mPlugins[i + 1] =
+ MakeRefPtr<nsPluginElement>(this, aWindow, kExtraPluginNames[i]);
+ }
+}
+
+nsPluginArray::~nsPluginArray() = default;
+
+nsPIDOMWindowInner* nsPluginArray::GetParentObject() const {
+ MOZ_ASSERT(mWindow);
+ return mWindow;
+}
+
+JSObject* nsPluginArray::WrapObject(JSContext* aCx,
+ JS::Handle<JSObject*> aGivenProto) {
+ return PluginArray_Binding::Wrap(aCx, this, aGivenProto);
+}
+
+nsPluginElement* nsPluginArray::IndexedGetter(uint32_t aIndex, bool& aFound) {
+ if (!ForceNoPlugins() && aIndex < ArrayLength(mPlugins)) {
+ aFound = true;
+ return mPlugins[aIndex];
+ }
+
+ aFound = false;
+ return nullptr;
+}
+
+nsPluginElement* nsPluginArray::NamedGetter(const nsAString& aName,
+ bool& aFound) {
+ if (ForceNoPlugins()) {
+ aFound = false;
+ return nullptr;
+ }
+
+ for (const auto& plugin : mPlugins) {
+ if (plugin->Name().Equals(aName)) {
+ aFound = true;
+ return plugin;
+ }
+ }
+
+ aFound = false;
+ return nullptr;
+}
+
+void nsPluginArray::GetSupportedNames(nsTArray<nsString>& aRetval) {
+ if (ForceNoPlugins()) {
+ return;
+ }
+
+ for (auto& plugin : mPlugins) {
+ aRetval.AppendElement(plugin->Name());
+ }
+}
+
+bool nsPluginArray::ForceNoPlugins() {
+ return StaticPrefs::pdfjs_disabled() &&
+ !nsGlobalWindowInner::Cast(mWindow)->ShouldResistFingerprinting();
+}
+
+NS_IMPL_CYCLE_COLLECTING_ADDREF(nsPluginArray)
+NS_IMPL_CYCLE_COLLECTING_RELEASE(nsPluginArray)
+NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(nsPluginArray)
+ NS_WRAPPERCACHE_INTERFACE_MAP_ENTRY
+ NS_INTERFACE_MAP_ENTRY(nsISupports)
+ NS_INTERFACE_MAP_ENTRY(nsISupportsWeakReference)
+NS_INTERFACE_MAP_END
+
+NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE_WEAK(nsPluginArray, mPlugins[0],
+ mPlugins[1], mPlugins[2],
+ mPlugins[3], mPlugins[4],
+ mMimeTypeArray, mWindow)
+
+// nsPluginElement implementation.
+
+nsPluginElement::nsPluginElement(nsPluginArray* aPluginArray,
+ nsPIDOMWindowInner* aWindow,
+ const nsAString& aName)
+ : mPluginArray(aPluginArray), mWindow(aWindow), mName(aName) {}
+
+nsPluginArray* nsPluginElement::GetParentObject() const { return mPluginArray; }
+
+JSObject* nsPluginElement::WrapObject(JSContext* aCx,
+ JS::Handle<JSObject*> aGivenProto) {
+ return Plugin_Binding::Wrap(aCx, this, aGivenProto);
+}
+
+nsMimeType* nsPluginElement::IndexedGetter(uint32_t aIndex, bool& aFound) {
+ return MimeTypeArray()->IndexedGetter(aIndex, aFound);
+}
+
+nsMimeType* nsPluginElement::NamedGetter(const nsAString& aName, bool& aFound) {
+ return MimeTypeArray()->NamedGetter(aName, aFound);
+}
+
+void nsPluginElement::GetSupportedNames(nsTArray<nsString>& retval) {
+ return MimeTypeArray()->GetSupportedNames(retval);
+}
+
+uint32_t nsPluginElement::Length() { return MimeTypeArray()->Length(); }
+
+NS_IMPL_CYCLE_COLLECTING_ADDREF(nsPluginElement)
+NS_IMPL_CYCLE_COLLECTING_RELEASE(nsPluginElement)
+NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(nsPluginElement)
+ NS_WRAPPERCACHE_INTERFACE_MAP_ENTRY
+ NS_INTERFACE_MAP_ENTRY(nsISupports)
+NS_INTERFACE_MAP_END
+
+NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE(nsPluginElement, mWindow, mPluginArray)