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// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/renderer/chrome_ppapi_interfaces.h"
#include "base/command_line.h"
#include "base/lazy_instance.h"
#include "base/logging.h"
#include "base/rand_util_c.h"
#include "base/utf_string_conversions.h"
#include "chrome/common/render_messages.h"
#include "chrome/renderer/chrome_ppb_pdf_impl.h"
#include "content/public/common/content_switches.h"
#include "content/public/renderer/render_thread.h"
#include "ipc/ipc_sync_message_filter.h"
#include "ppapi/c/private/ppb_nacl_private.h"
#include "ppapi/c/private/ppb_pdf.h"
#include "webkit/plugins/ppapi/ppapi_interface_factory.h"
#if !defined(DISABLE_NACL)
#include "native_client/src/shared/imc/nacl_imc.h"
#include "ppapi/native_client/src/trusted/plugin/nacl_entry_points.h"
#endif
using content::RenderThread;
namespace chrome {
#if !defined(DISABLE_NACL)
namespace {
base::LazyInstance<scoped_refptr<IPC::SyncMessageFilter> >
g_background_thread_sender = LAZY_INSTANCE_INITIALIZER;
} // namespace
// Launch NaCl's sel_ldr process.
bool LaunchSelLdr(const char* alleged_url, int socket_count,
void* imc_handles, void* nacl_process_handle,
int* nacl_process_id) {
std::vector<nacl::FileDescriptor> sockets;
base::ProcessHandle nacl_process;
IPC::Message::Sender* sender = RenderThread::Get();
if (sender == NULL) {
sender = g_background_thread_sender.Pointer()->get();
}
if (!sender->Send(
new ChromeViewHostMsg_LaunchNaCl(
ASCIIToWide(alleged_url),
socket_count,
&sockets,
&nacl_process,
reinterpret_cast<base::ProcessId*>(nacl_process_id)))) {
return false;
}
CHECK(static_cast<int>(sockets.size()) == socket_count);
for (int i = 0; i < socket_count; i++) {
static_cast<nacl::Handle*>(imc_handles)[i] =
nacl::ToNativeHandle(sockets[i]);
}
*static_cast<nacl::Handle*>(nacl_process_handle) = nacl_process;
return true;
}
int UrandomFD(void) {
#if defined(OS_POSIX)
return GetUrandomFD();
#else
return 0;
#endif
}
bool Are3DInterfacesDisabled() {
return CommandLine::ForCurrentProcess()->HasSwitch(switches::kDisable3DAPIs);
}
void EnableBackgroundSelLdrLaunch() {
g_background_thread_sender.Get() =
RenderThread::Get()->GetSyncMessageFilter();
}
const PPB_NaCl_Private ppb_nacl = {
&LaunchSelLdr,
&UrandomFD,
&Are3DInterfacesDisabled,
&EnableBackgroundSelLdrLaunch,
};
class PPB_NaCl_Impl {
public:
// Returns a pointer to the interface implementing PPB_NaCl_Private that is
// exposed to the plugin.
static const PPB_NaCl_Private* GetInterface() {
return &ppb_nacl;
}
};
#endif // DISABLE_NACL
const void* ChromePPAPIInterfaceFactory(const std::string& interface_name) {
#if !defined(DISABLE_NACL)
if (interface_name == PPB_NACL_PRIVATE_INTERFACE)
return chrome::PPB_NaCl_Impl::GetInterface();
#endif // DISABLE_NACL
if (interface_name == PPB_PDF_INTERFACE)
return chrome::PPB_PDF_Impl::GetInterface();
return NULL;
}
} // namespace chrome
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