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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/StaticPrefs_pdfjs.h"
#include "mozilla/dom/PluginArrayBinding.h"
#include "mozilla/dom/PluginBinding.h"
#include "nsContentUtils.h"
#include "nsMimeTypeArray.h"
#include "nsPIDOMWindow.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 < std::size(kMimeTypeNames); ++i) {
mimeTypes[i] = MakeRefPtr<nsMimeType>(mPlugins[0], kMimeTypeNames[i]);
}
mMimeTypeArray = MakeRefPtr<nsMimeTypeArray>(aWindow, mimeTypes);
for (uint32_t i = 0; i < std::size(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 < std::size(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() &&
!nsContentUtils::ShouldResistFingerprinting(
mWindow ? mWindow->GetDocShell() : nullptr, RFPTarget::PdfjsSpoof);
}
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)
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