Initial import of the Chrome Frame codebase. Integration in chrome.gyp coming in a separate CL.

BUG=None
TEST=None

Review URL: http://codereview.chromium.org/218019

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@27042 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 125 insertions, 0 deletions

diff --git a/chrome_frame/chrome_launcher.cc b/chrome_frame/chrome_launcher.cc
new file mode 100644
index 0000000..7670aec
--- /dev/null
+++ b/chrome_frame/chrome_launcher.cc
@@ -0,0 +1,125 @@
+// Copyright (c) 2009 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_frame/chrome_launcher.h"

+

+#include "base/base_switches.h"

+#include "base/command_line.h"

+#include "base/file_util.h"

+#include "base/logging.h"

+#include "base/path_service.h"

+#include "chrome/common/chrome_constants.h"

+#include "chrome/common/chrome_switches.h"

+#include "chrome_frame/chrome_frame_automation.h"

+#include "chrome_frame/crash_report.h"

+

+namespace chrome_launcher {

+

+const wchar_t kLauncherExeBaseName[] = L"chrome_launcher.exe";

+

+// These are the switches we will allow (along with their values) in the

+// safe-for-Low-Integrity version of the Chrome command line.

+const wchar_t* kAllowedSwitches[] = {

+  switches::kAutomationClientChannelID,

+  switches::kDisableMetrics,

+  switches::kNoFirstRun,

+  switches::kUserDataDir,

+  switches::kLoadExtension,

+};

+

+CommandLine* CreateLaunchCommandLine() {

+  // TODO(joi) As optimization, could launch Chrome directly when running at

+  // medium integrity.  (Requires bringing in code to read SIDs, etc.)

+

+  // The launcher EXE will be in the same directory as the npchrome_tab DLL,

+  // so create a full path to it based on this assumption.  Since our unit

+  // tests also use this function, and live in the directory above, we test

+  // existence of the file and try the path that includes the /servers/

+  // directory if needed.

+  FilePath module_path;

+  if (PathService::Get(base::FILE_MODULE, &module_path)) {

+    FilePath current_dir = module_path.DirName();

+    FilePath same_dir_path = current_dir.Append(kLauncherExeBaseName);

+    if (file_util::PathExists(same_dir_path)) {

+      return new CommandLine(same_dir_path.ToWStringHack());

+    } else {

+      FilePath servers_path = 

+          current_dir.Append(L"servers").Append(kLauncherExeBaseName);

+      DCHECK(file_util::PathExists(servers_path)) <<

+          "What module is this? It's not in 'servers' or main output dir.";

+      return new CommandLine(servers_path.ToWStringHack());

+    }

+  } else {

+    NOTREACHED();

+    return NULL;

+  }

+}

+

+void SanitizeCommandLine(const CommandLine& original, CommandLine* sanitized) {

+  int num_sanitized_switches = 0;

+  for (int i = 0; i < arraysize(kAllowedSwitches); ++i) {

+    const wchar_t* current_switch = kAllowedSwitches[i];

+    if (original.HasSwitch(current_switch)) {

+      ++num_sanitized_switches;

+      std::wstring switch_value = original.GetSwitchValue(current_switch);

+      if (0 == switch_value.length()) {

+        sanitized->AppendSwitch(current_switch);

+      } else {

+        sanitized->AppendSwitchWithValue(current_switch, switch_value);

+      }

+    }

+  }

+  if (num_sanitized_switches != original.GetSwitchCount()) {

+    NOTREACHED();

+    LOG(ERROR) << "Original command line from Low Integrity had switches "

+        << "that are not on our whitelist.";

+  }

+}

+

+bool SanitizeAndLaunchChrome(const wchar_t* command_line) {

+  std::wstring command_line_with_program(L"dummy.exe ");

+  command_line_with_program += command_line;

+  CommandLine original(L"");

+  original.ParseFromString(command_line_with_program);

+  CommandLine sanitized(GetChromeExecutablePath());

+  SanitizeCommandLine(original, &sanitized);

+

+  return base::LaunchApp(sanitized.command_line_string(), false, false, NULL);

+}

+

+std::wstring GetChromeExecutablePath() {

+  std::wstring cur_path;

+  PathService::Get(base::DIR_MODULE, &cur_path);

+  file_util::AppendToPath(&cur_path, chrome::kBrowserProcessExecutableName);

+

+  // The installation model for Chrome places the DLLs in a versioned

+  // sub-folder one down from the Chrome executable. If we fail to find

+  // chrome.exe in the current path, try looking one up and launching that

+  // instead.

+  if (!file_util::PathExists(cur_path)) {

+    PathService::Get(base::DIR_MODULE, &cur_path);

+    file_util::UpOneDirectory(&cur_path);

+    file_util::AppendToPath(&cur_path, chrome::kBrowserProcessExecutableName);

+  }

+

+  return cur_path;

+}

+

+}  // namespace chrome_launcher

+

+// Entrypoint that implements the logic of chrome_launcher.exe.

+int CALLBACK CfLaunchChrome() {

+  if (chrome_launcher::SanitizeAndLaunchChrome(::GetCommandLine())) {

+    return ERROR_SUCCESS;

+  } else {

+    return ERROR_OPEN_FAILED;

+  }

+}

+

+// Compile-time check to see that the type CfLaunchChromeProc is correct.

+#ifndef NODEBUG

+namespace {

+chrome_launcher::CfLaunchChromeProc cf_launch_chrome = CfLaunchChrome;

+}  // namespace

+#endif  // NODEBUG