Implement the broker process that launches NaCl loader processes on 64-bit Windows systems.

BUG=28176
TEST=none
Review URL: http://codereview.chromium.org/542030

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@37578 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 72 insertions, 0 deletions

diff --git a/chrome/nacl/broker_thread.cc b/chrome/nacl/broker_thread.cc
new file mode 100644
index 0000000..0b4bbd2
--- /dev/null
+++ b/chrome/nacl/broker_thread.cc
@@ -0,0 +1,72 @@
+// Copyright (c) 2010 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/nacl/broker_thread.h"
+
+#include "base/base_switches.h"
+#include "base/command_line.h"
+#include "base/path_service.h"
+#include "base/process_util.h"
+#include "chrome/common/sandbox_policy.h"
+#include "chrome/common/chrome_switches.h"
+#include "chrome/common/nacl_cmd_line.h"
+#include "chrome/common/nacl_messages.h"
+#include "ipc/ipc_switches.h"
+
+NaClBrokerThread::NaClBrokerThread()
+    : browser_handle_(0),
+      broker_services_(NULL) {
+}
+
+NaClBrokerThread::~NaClBrokerThread() {
+  base::CloseProcessHandle(browser_handle_);
+}
+
+NaClBrokerThread* NaClBrokerThread::current() {
+  return static_cast<NaClBrokerThread*>(ChildThread::current());
+}
+
+void NaClBrokerThread::OnControlMessageReceived(const IPC::Message& msg) {
+  IPC_BEGIN_MESSAGE_MAP(NaClBrokerThread, msg)
+    IPC_MESSAGE_HANDLER(NaClProcessMsg_LaunchLoaderThroughBroker,
+                        OnLaunchLoaderThroughBroker)
+  IPC_END_MESSAGE_MAP()
+}
+
+void NaClBrokerThread::OnLaunchLoaderThroughBroker(
+    const std::wstring& loader_channel_id) {
+  base::ProcessHandle loader_process = 0;
+  base::ProcessHandle loader_handle_in_browser = 0;
+
+  // Create the path to the nacl broker/loader executable - it's the executable
+  // this code is running in.
+  FilePath exe_path;
+  PathService::Get(base::FILE_EXE, &exe_path);
+  if (!exe_path.empty()) {
+    CommandLine* cmd_line = new CommandLine(exe_path);
+    nacl::CopyNaClCommandLineArguments(cmd_line);
+
+    cmd_line->AppendSwitchWithValue(switches::kProcessType,
+        switches::kNaClLoaderProcess);
+
+    cmd_line->AppendSwitchWithValue(switches::kProcessChannelID,
+        loader_channel_id);
+
+    loader_process = sandbox::StartProcessWithAccess(cmd_line, FilePath());
+    if (loader_process) {
+      DuplicateHandle(::GetCurrentProcess(), loader_process,
+        browser_handle_, &loader_handle_in_browser,
+        PROCESS_DUP_HANDLE, FALSE, 0);
+    }
+  }
+  Send(new NaClProcessMsg_LoaderLaunched(loader_channel_id,
+                                         loader_handle_in_browser));
+}
+
+void NaClBrokerThread::OnChannelConnected(int32 peer_pid) {
+  bool res = base::OpenProcessHandle(peer_pid, &browser_handle_);
+  DCHECK(res);
+  Send(new NaClProcessMsg_BrokerReady());
+}
+