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// Copyright (c) 2011 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/browser/browser_main_gtk.h"
#include <gtk/gtk.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <unistd.h>
#include "base/command_line.h"
#include "base/debug/debugger.h"
#include "chrome/browser/browser_main_win.h"
#include "chrome/browser/metrics/metrics_service.h"
#include "chrome/browser/ui/browser_list.h"
#include "chrome/common/chrome_switches.h"
#include "content/browser/renderer_host/render_sandbox_host_linux.h"
#include "content/browser/zygote_host_linux.h"
#include "content/common/result_codes.h"
#include "grit/chromium_strings.h"
#include "grit/generated_resources.h"
#include "ui/base/l10n/l10n_util.h"
#include "ui/base/resource/resource_bundle.h"
#include "ui/base/x/x11_util.h"
#include "ui/base/x/x11_util_internal.h"
#include "ui/gfx/gtk_util.h"
#if defined(USE_NSS)
#include "crypto/nss_util.h"
#endif
#if defined(USE_LINUX_BREAKPAD)
#include "chrome/app/breakpad_linux.h"
#endif
namespace {
// Indicates that we're currently responding to an IO error (by shutting down).
bool g_in_x11_io_error_handler = false;
// Number of seconds to wait for UI thread to get an IO error if we get it on
// the background thread.
const int kWaitForUIThreadSeconds = 10;
int BrowserX11ErrorHandler(Display* d, XErrorEvent* error) {
if (!g_in_x11_io_error_handler)
MessageLoop::current()->PostTask(
FROM_HERE,
NewRunnableFunction(ui::LogErrorEventDescription, d, *error));
return 0;
}
// This function is used to help us diagnose crash dumps that happen
// during the shutdown process.
NOINLINE void WaitingForUIThreadToHandleIOError() {
// Ensure function isn't optimized away.
asm("");
sleep(kWaitForUIThreadSeconds);
}
int BrowserX11IOErrorHandler(Display* d) {
if (!BrowserThread::CurrentlyOn(BrowserThread::UI)) {
// Wait for the UI thread (which has a different connection to the X server)
// to get the error. We can't call shutdown from this thread without
// tripping an error. Doing it through a function so that we'll be able
// to see it in any crash dumps.
WaitingForUIThreadToHandleIOError();
return 0;
}
// If there's an IO error it likely means the X server has gone away
if (!g_in_x11_io_error_handler) {
g_in_x11_io_error_handler = true;
LOG(ERROR) << "X IO Error detected";
BrowserList::SessionEnding();
}
return 0;
}
} // namespace
void BrowserMainPartsGtk::PreEarlyInitialization() {
DetectRunningAsRoot();
BrowserMainPartsPosix::PreEarlyInitialization();
SetupSandbox();
#if defined(USE_NSS)
// We want to be sure to init NSPR on the main thread.
crypto::EnsureNSPRInit();
#endif
}
void BrowserMainPartsGtk::DetectRunningAsRoot() {
if (geteuid() == 0) {
const CommandLine& command_line = *CommandLine::ForCurrentProcess();
if (parsed_command_line().HasSwitch(switches::kUserDataDir))
return;
gfx::GtkInitFromCommandLine(command_line);
// Get just enough of our resource machinery up so we can extract the
// locale appropriate string. Note that the GTK implementation ignores the
// passed in parameter and checks the LANG environment variables instead.
ResourceBundle::InitSharedInstance("");
std::string message = l10n_util::GetStringFUTF8(
IDS_REFUSE_TO_RUN_AS_ROOT,
l10n_util::GetStringUTF16(IDS_PRODUCT_NAME));
GtkWidget* dialog = gtk_message_dialog_new(
NULL,
static_cast<GtkDialogFlags>(0),
GTK_MESSAGE_ERROR,
GTK_BUTTONS_CLOSE,
"%s",
message.c_str());
LOG(ERROR) << "Startup refusing to run as root.";
message = l10n_util::GetStringFUTF8(
IDS_REFUSE_TO_RUN_AS_ROOT_2,
l10n_util::GetStringUTF16(IDS_PRODUCT_NAME));
gtk_message_dialog_format_secondary_text(GTK_MESSAGE_DIALOG(dialog),
"%s",
message.c_str());
message = l10n_util::GetStringUTF8(IDS_PRODUCT_NAME);
gtk_window_set_title(GTK_WINDOW(dialog), message.c_str());
gtk_dialog_run(GTK_DIALOG(dialog));
gtk_widget_destroy(dialog);
exit(EXIT_FAILURE);
}
}
void BrowserMainPartsGtk::SetupSandbox() {
// TODO(evanm): move this into SandboxWrapper; I'm just trying to move this
// code en masse out of chrome_main for now.
const char* sandbox_binary = NULL;
struct stat st;
// In Chromium branded builds, developers can set an environment variable to
// use the development sandbox. See
// http://code.google.com/p/chromium/wiki/LinuxSUIDSandboxDevelopment
if (stat("/proc/self/exe", &st) == 0 && st.st_uid == getuid())
sandbox_binary = getenv("CHROME_DEVEL_SANDBOX");
#if defined(LINUX_SANDBOX_PATH)
if (!sandbox_binary)
sandbox_binary = LINUX_SANDBOX_PATH;
#endif
std::string sandbox_cmd;
if (sandbox_binary && !parsed_command_line().HasSwitch(switches::kNoSandbox))
sandbox_cmd = sandbox_binary;
// Tickle the sandbox host and zygote host so they fork now.
RenderSandboxHostLinux* shost = RenderSandboxHostLinux::GetInstance();
shost->Init(sandbox_cmd);
ZygoteHost* zhost = ZygoteHost::GetInstance();
zhost->Init(sandbox_cmd);
}
void DidEndMainMessageLoop() {
}
void RecordBreakpadStatusUMA(MetricsService* metrics) {
#if defined(USE_LINUX_BREAKPAD)
metrics->RecordBreakpadRegistration(IsCrashReporterEnabled());
#else
metrics->RecordBreakpadRegistration(false);
#endif
metrics->RecordBreakpadHasDebugger(base::debug::BeingDebugged());
}
void WarnAboutMinimumSystemRequirements() {
// Nothing to warn about on GTK right now.
}
void RecordBrowserStartupTime() {
// Not implemented on GTK for now.
}
// From browser_main_win.h, stubs until we figure out the right thing...
int DoUninstallTasks(bool chrome_still_running) {
return ResultCodes::NORMAL_EXIT;
}
int HandleIconsCommands(const CommandLine &parsed_command_line) {
return 0;
}
bool CheckMachineLevelInstall() {
return false;
}
void PrepareRestartOnCrashEnviroment(const CommandLine &parsed_command_line) {
}
void SetBrowserX11ErrorHandlers() {
// Set up error handlers to make sure profile gets written if X server
// goes away.
ui::SetX11ErrorHandlers(BrowserX11ErrorHandler, BrowserX11IOErrorHandler);
}
#if !defined(OS_CHROMEOS)
// static
BrowserMainParts* BrowserMainParts::CreateBrowserMainParts(
const MainFunctionParams& parameters) {
return new BrowserMainPartsGtk(parameters);
}
#endif
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