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// Copyright (c) 2006-2008 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 "build/build_config.h"
#if defined(OS_WIN)
#include "app/win_util.h"
#endif
#include "base/command_line.h"
#include "base/message_loop.h"
#include "base/string_util.h"
#include "base/system_monitor.h"
#include "chrome/common/child_process.h"
#include "chrome/common/chrome_constants.h"
#include "chrome/common/chrome_switches.h"
#include "chrome/common/logging_chrome.h"
#include "chrome/common/main_function_params.h"
#include "chrome/plugin/plugin_thread.h"
#if defined(OS_WIN)
#include "chrome/test/injection_test_dll.h"
#include "sandbox/src/sandbox.h"
#elif defined(OS_LINUX)
#include "base/global_descriptors_posix.h"
#include "ipc/ipc_descriptors.h"
#elif defined(OS_MACOSX)
#include "chrome/common/plugin_carbon_interpose_constants_mac.h"
#endif
#if defined(USE_LINUX_BREAKPAD)
#include "chrome/app/breakpad_linux.h"
#endif
#if defined(OS_MACOSX)
// Removes our Carbon library interposing from the environment so that it
// doesn't carry into any processes that plugins might start.
static void TrimInterposeEnvironment() {
const char* interpose_list =
getenv(plugin_interpose_strings::kDYLDInsertLibrariesKey);
if (!interpose_list) {
NOTREACHED() << "No interposing libraries set";
return;
}
// The list is a :-separated list of paths. Because we append our interpose
// library just before forking in plugin_process_host.cc, the only cases we
// need to handle are:
// 1) The whole string is "<kInterposeLibraryPath>", so just clear it, or
// 2) ":<kInterposeLibraryPath>" is the end of the string, so trim and re-set.
int suffix_offset = strlen(interpose_list) -
strlen(plugin_interpose_strings::kInterposeLibraryPath);
if (suffix_offset == 0 &&
strcmp(interpose_list,
plugin_interpose_strings::kInterposeLibraryPath) == 0) {
unsetenv(plugin_interpose_strings::kDYLDInsertLibrariesKey);
} else if (suffix_offset > 0 && interpose_list[suffix_offset - 1] == ':' &&
strcmp(interpose_list + suffix_offset,
plugin_interpose_strings::kInterposeLibraryPath) == 0) {
std::string trimmed_list =
std::string(interpose_list).substr(0, suffix_offset - 1);
setenv(plugin_interpose_strings::kDYLDInsertLibrariesKey,
trimmed_list.c_str(), 1);
} else {
NOTREACHED() << "Missing Carbon interposing library";
}
}
#endif // OS_MACOSX
// main() routine for running as the plugin process.
int PluginMain(const MainFunctionParams& parameters) {
#if defined(USE_LINUX_BREAKPAD)
// Needs to be called after we have chrome::DIR_USER_DATA.
InitCrashReporter();
#endif
// The main thread of the plugin services UI.
#if defined(OS_MACOSX)
// For Mac NPAPI plugins, we don't want a MessageLoop::TYPE_UI because
// that will cause events to be dispatched via the Cocoa responder chain.
// If the plugin creates its own windows with Carbon APIs (for example,
// full screen mode in Flash), those windows would not receive events.
// Instead, WebPluginDelegateImpl::OnNullEvent will dispatch any pending
// system events directly to the plugin.
MessageLoop main_message_loop(MessageLoop::TYPE_DEFAULT);
#else
MessageLoop main_message_loop(MessageLoop::TYPE_UI);
#endif
std::wstring app_name = chrome::kBrowserAppName;
PlatformThread::SetName(WideToASCII(app_name + L"_PluginMain").c_str());
// Initialize the SystemMonitor
base::SystemMonitor::Start();
#if defined(OS_MACOSX)
TrimInterposeEnvironment();
#endif
const CommandLine& parsed_command_line = parameters.command_line_;
#if defined(OS_WIN)
sandbox::TargetServices* target_services =
parameters.sandbox_info_.TargetServices();
CoInitialize(NULL);
DLOG(INFO) << "Started plugin with " <<
parsed_command_line.command_line_string();
HMODULE sandbox_test_module = NULL;
bool no_sandbox = parsed_command_line.HasSwitch(switches::kNoSandbox) ||
!parsed_command_line.HasSwitch(switches::kSafePlugins);
if (target_services && !no_sandbox) {
// The command line might specify a test plugin to load.
if (parsed_command_line.HasSwitch(switches::kTestSandbox)) {
std::wstring test_plugin_name =
parsed_command_line.GetSwitchValue(switches::kTestSandbox);
sandbox_test_module = LoadLibrary(test_plugin_name.c_str());
DCHECK(sandbox_test_module);
}
}
#endif
if (parsed_command_line.HasSwitch(switches::kPluginStartupDialog)) {
ChildProcess::WaitForDebugger(L"Plugin");
}
{
ChildProcess plugin_process;
plugin_process.set_main_thread(new PluginThread());
#if defined(OS_WIN)
if (!no_sandbox && target_services)
target_services->LowerToken();
if (sandbox_test_module) {
RunRendererTests run_security_tests =
reinterpret_cast<RunPluginTests>(GetProcAddress(sandbox_test_module,
kPluginTestCall));
DCHECK(run_security_tests);
if (run_security_tests) {
int test_count = 0;
DLOG(INFO) << "Running plugin security tests";
BOOL result = run_security_tests(&test_count);
DCHECK(result) << "Test number " << test_count << " has failed.";
// If we are in release mode, crash or debug the process.
if (!result)
__debugbreak();
}
FreeLibrary(sandbox_test_module);
}
#endif
MessageLoop::current()->Run();
}
#if defined(OS_WIN)
CoUninitialize();
#endif
return 0;
}
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