root/chrome/app/chrome_breakpad_client.cc

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DEFINITIONS

This source file includes following definitions.
  1. SetClientID
  2. GetAlternativeCrashDumpLocation
  3. GetProductNameAndVersion
  4. ShouldShowRestartDialog
  5. AboutToRestart
  6. GetDeferredUploadsSupported
  7. GetIsPerUserInstall
  8. GetShouldDumpLargerDumps
  9. GetResultCodeRespawnFailed
  10. InitBrowserCrashDumpsRegKey
  11. RecordCrashDumpAttempt
  12. ReportingIsEnforcedByPolicy
  13. GetProductNameAndVersion
  14. GetReporterLogFilename
  15. GetCrashDumpLocation
  16. RegisterCrashKeys
  17. IsRunningUnattended
  18. GetCollectStatsConsent
  19. GetAndroidMinidumpDescriptor
  20. EnableBreakpadForProcess

// Copyright 2013 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/app/chrome_breakpad_client.h"

#include "base/atomicops.h"
#include "base/command_line.h"
#include "base/environment.h"
#include "base/files/file_path.h"
#include "base/logging.h"
#include "base/memory/scoped_ptr.h"
#include "base/path_service.h"
#include "base/strings/safe_sprintf.h"
#include "base/strings/string_split.h"
#include "base/strings/utf_string_conversions.h"
#include "chrome/common/chrome_constants.h"
#include "chrome/common/chrome_paths.h"
#include "chrome/common/chrome_result_codes.h"
#include "chrome/common/chrome_switches.h"
#include "chrome/common/crash_keys.h"
#include "chrome/common/env_vars.h"
#include "chrome/installer/util/google_update_settings.h"

#if defined(OS_WIN)
#include <windows.h>

#include "base/file_version_info.h"
#include "base/win/registry.h"
#include "chrome/installer/util/google_chrome_sxs_distribution.h"
#include "chrome/installer/util/install_util.h"
#include "policy/policy_constants.h"
#endif

#if defined(OS_POSIX) && !defined(OS_MACOSX) && !defined(OS_IOS)
#include "chrome/browser/crash_upload_list.h"
#include "chrome/common/chrome_version_info_posix.h"
#endif

#if defined(OS_POSIX)
#include "base/debug/dump_without_crashing.h"
#endif

#if defined(OS_ANDROID)
#include "chrome/common/descriptors_android.h"
#endif

#if defined(OS_CHROMEOS)
#include "chrome/common/chrome_version_info.h"
#include "chromeos/chromeos_switches.h"
#endif

namespace chrome {

namespace {

#if defined(OS_WIN)
// This is the minimum version of google update that is required for deferred
// crash uploads to work.
const char kMinUpdateVersion[] = "1.3.21.115";

// The value name prefix will be of the form {chrome-version}-{pid}-{timestamp}
// (i.e., "#####.#####.#####.#####-########-########") which easily fits into a
// 63 character buffer.
const char kBrowserCrashDumpPrefixTemplate[] = "%s-%08x-%08x";
const size_t kBrowserCrashDumpPrefixLength = 63;
char g_browser_crash_dump_prefix[kBrowserCrashDumpPrefixLength + 1] = {};

// These registry key to which we'll write a value for each crash dump attempt.
HKEY g_browser_crash_dump_regkey = NULL;

// A atomic counter to make each crash dump value name unique.
base::subtle::Atomic32 g_browser_crash_dump_count = 0;
#endif

}  // namespace

ChromeBreakpadClient::ChromeBreakpadClient() {}

ChromeBreakpadClient::~ChromeBreakpadClient() {}

void ChromeBreakpadClient::SetClientID(const std::string& client_id) {
  crash_keys::SetClientID(client_id);
}

#if defined(OS_WIN)
bool ChromeBreakpadClient::GetAlternativeCrashDumpLocation(
    base::FilePath* crash_dir) {
  // By setting the BREAKPAD_DUMP_LOCATION environment variable, an alternate
  // location to write breakpad crash dumps can be set.
  scoped_ptr<base::Environment> env(base::Environment::Create());
  std::string alternate_crash_dump_location;
  if (env->GetVar("BREAKPAD_DUMP_LOCATION", &alternate_crash_dump_location)) {
    *crash_dir = base::FilePath::FromUTF8Unsafe(alternate_crash_dump_location);
    return true;
  }

  return false;
}

void ChromeBreakpadClient::GetProductNameAndVersion(
    const base::FilePath& exe_path,
    base::string16* product_name,
    base::string16* version,
    base::string16* special_build,
    base::string16* channel_name) {
  DCHECK(product_name);
  DCHECK(version);
  DCHECK(special_build);
  DCHECK(channel_name);

  scoped_ptr<FileVersionInfo> version_info(
      FileVersionInfo::CreateFileVersionInfo(exe_path));

  if (version_info.get()) {
    // Get the information from the file.
    *version = version_info->product_version();
    if (!version_info->is_official_build())
      version->append(base::ASCIIToUTF16("-devel"));

    *product_name = version_info->product_short_name();
    *special_build = version_info->special_build();
  } else {
    // No version info found. Make up the values.
    *product_name = base::ASCIIToUTF16("Chrome");
    *version = base::ASCIIToUTF16("0.0.0.0-devel");
  }

  std::wstring channel_string;
  GoogleUpdateSettings::GetChromeChannelAndModifiers(
      !GetIsPerUserInstall(exe_path), &channel_string);
  *channel_name = base::WideToUTF16(channel_string);
}

bool ChromeBreakpadClient::ShouldShowRestartDialog(base::string16* title,
                                                   base::string16* message,
                                                   bool* is_rtl_locale) {
  scoped_ptr<base::Environment> env(base::Environment::Create());
  if (!env->HasVar(env_vars::kShowRestart) ||
      !env->HasVar(env_vars::kRestartInfo) ||
      env->HasVar(env_vars::kMetroConnected)) {
    return false;
  }

  std::string restart_info;
  env->GetVar(env_vars::kRestartInfo, &restart_info);

  // The CHROME_RESTART var contains the dialog strings separated by '|'.
  // See ChromeBrowserMainPartsWin::PrepareRestartOnCrashEnviroment()
  // for details.
  std::vector<std::string> dlg_strings;
  base::SplitString(restart_info, '|', &dlg_strings);

  if (dlg_strings.size() < 3)
    return false;

  *title = base::UTF8ToUTF16(dlg_strings[0]);
  *message = base::UTF8ToUTF16(dlg_strings[1]);
  *is_rtl_locale = dlg_strings[2] == env_vars::kRtlLocale;
  return true;
}

bool ChromeBreakpadClient::AboutToRestart() {
  scoped_ptr<base::Environment> env(base::Environment::Create());
  if (!env->HasVar(env_vars::kRestartInfo))
    return false;

  env->SetVar(env_vars::kShowRestart, "1");
  return true;
}

bool ChromeBreakpadClient::GetDeferredUploadsSupported(
    bool is_per_user_install) {
  Version update_version = GoogleUpdateSettings::GetGoogleUpdateVersion(
      !is_per_user_install);
  if (!update_version.IsValid() ||
      update_version.IsOlderThan(std::string(kMinUpdateVersion)))
    return false;

  return true;
}

bool ChromeBreakpadClient::GetIsPerUserInstall(const base::FilePath& exe_path) {
  return InstallUtil::IsPerUserInstall(exe_path.value().c_str());
}

bool ChromeBreakpadClient::GetShouldDumpLargerDumps(bool is_per_user_install) {
  base::string16 channel_name(base::WideToUTF16(
      GoogleUpdateSettings::GetChromeChannel(!is_per_user_install)));

  // Capture more detail in crash dumps for beta and dev channel builds.
  if (channel_name == base::ASCIIToUTF16("dev") ||
      channel_name == base::ASCIIToUTF16("beta") ||
      channel_name == GoogleChromeSxSDistribution::ChannelName())
    return true;
  return false;
}

int ChromeBreakpadClient::GetResultCodeRespawnFailed() {
  return chrome::RESULT_CODE_RESPAWN_FAILED;
}

void ChromeBreakpadClient::InitBrowserCrashDumpsRegKey() {
  DCHECK(g_browser_crash_dump_regkey == NULL);

  base::win::RegKey regkey;
  if (regkey.Create(HKEY_CURRENT_USER,
                    chrome::kBrowserCrashDumpAttemptsRegistryPath,
                    KEY_ALL_ACCESS) != ERROR_SUCCESS) {
    return;
  }

  // We use the current process id and the current tick count as a (hopefully)
  // unique combination for the crash dump value. There's a small chance that
  // across a reboot we might have a crash dump signal written, and the next
  // browser process might have the same process id and tick count, but crash
  // before consuming the signal (overwriting the signal with an identical one).
  // For now, we're willing to live with that risk.
  int length = base::strings::SafeSPrintf(g_browser_crash_dump_prefix,
                                          kBrowserCrashDumpPrefixTemplate,
                                          chrome::kChromeVersion,
                                          ::GetCurrentProcessId(),
                                          ::GetTickCount());
  if (length <= 0) {
    NOTREACHED();
    g_browser_crash_dump_prefix[0] = '\0';
    return;
  }

  // Hold the registry key in a global for update on crash dump.
  g_browser_crash_dump_regkey = regkey.Take();
}

void ChromeBreakpadClient::RecordCrashDumpAttempt(bool is_real_crash) {
  // If we're not a browser (or the registry is unavailable to us for some
  // reason) then there's nothing to do.
  if (g_browser_crash_dump_regkey == NULL)
    return;

  // Generate the final value name we'll use (appends the crash number to the
  // base value name).
  const size_t kMaxValueSize = 2 * kBrowserCrashDumpPrefixLength;
  char value_name[kMaxValueSize + 1] = {};
  int length = base::strings::SafeSPrintf(
      value_name,
      "%s-%x",
      g_browser_crash_dump_prefix,
      base::subtle::NoBarrier_AtomicIncrement(&g_browser_crash_dump_count, 1));

  if (length > 0) {
    DWORD value_dword = is_real_crash ? 1 : 0;
    ::RegSetValueExA(g_browser_crash_dump_regkey, value_name, 0, REG_DWORD,
                     reinterpret_cast<BYTE*>(&value_dword),
                     sizeof(value_dword));
  }
}

bool ChromeBreakpadClient::ReportingIsEnforcedByPolicy(bool* breakpad_enabled) {
// Determine whether configuration management allows loading the crash reporter.
// Since the configuration management infrastructure is not initialized at this
// point, we read the corresponding registry key directly. The return status
// indicates whether policy data was successfully read. If it is true,
// |breakpad_enabled| contains the value set by policy.
  base::string16 key_name =
      base::UTF8ToUTF16(policy::key::kMetricsReportingEnabled);
  DWORD value = 0;
  base::win::RegKey hklm_policy_key(HKEY_LOCAL_MACHINE,
                                    policy::kRegistryChromePolicyKey, KEY_READ);
  if (hklm_policy_key.ReadValueDW(key_name.c_str(), &value) == ERROR_SUCCESS) {
    *breakpad_enabled = value != 0;
    return true;
  }

  base::win::RegKey hkcu_policy_key(HKEY_CURRENT_USER,
                                    policy::kRegistryChromePolicyKey, KEY_READ);
  if (hkcu_policy_key.ReadValueDW(key_name.c_str(), &value) == ERROR_SUCCESS) {
    *breakpad_enabled = value != 0;
    return true;
  }

  return false;
}
#endif

#if defined(OS_POSIX) && !defined(OS_MACOSX) && !defined(OS_IOS)
void ChromeBreakpadClient::GetProductNameAndVersion(std::string* product_name,
                                                    std::string* version) {
  DCHECK(product_name);
  DCHECK(version);
#if defined(OS_ANDROID)
  *product_name = "Chrome_Android";
#elif defined(OS_CHROMEOS)
  *product_name = "Chrome_ChromeOS";
#else  // OS_LINUX
#if !defined(ADDRESS_SANITIZER)
  *product_name = "Chrome_Linux";
#else
  *product_name = "Chrome_Linux_ASan";
#endif
#endif

  *version = PRODUCT_VERSION;
}

base::FilePath ChromeBreakpadClient::GetReporterLogFilename() {
  return base::FilePath(CrashUploadList::kReporterLogFilename);
}
#endif

bool ChromeBreakpadClient::GetCrashDumpLocation(base::FilePath* crash_dir) {
  // By setting the BREAKPAD_DUMP_LOCATION environment variable, an alternate
  // location to write breakpad crash dumps can be set.
  scoped_ptr<base::Environment> env(base::Environment::Create());
  std::string alternate_crash_dump_location;
  if (env->GetVar("BREAKPAD_DUMP_LOCATION", &alternate_crash_dump_location)) {
    base::FilePath crash_dumps_dir_path =
        base::FilePath::FromUTF8Unsafe(alternate_crash_dump_location);
    PathService::Override(chrome::DIR_CRASH_DUMPS, crash_dumps_dir_path);
  }

  return PathService::Get(chrome::DIR_CRASH_DUMPS, crash_dir);
}

size_t ChromeBreakpadClient::RegisterCrashKeys() {
  // Note: This is not called on Windows because Breakpad is initialized in the
  // EXE module, but code that uses crash keys is in the DLL module.
  // RegisterChromeCrashKeys() will be called after the DLL is loaded.
  return crash_keys::RegisterChromeCrashKeys();
}

bool ChromeBreakpadClient::IsRunningUnattended() {
  scoped_ptr<base::Environment> env(base::Environment::Create());
  return env->HasVar(env_vars::kHeadless);
}

bool ChromeBreakpadClient::GetCollectStatsConsent() {
  // Convert #define to a variable so that we can use if() rather than
  // #if below and so at least compile-test the Chrome code in
  // Chromium builds.
#if defined(GOOGLE_CHROME_BUILD)
  bool is_chrome_build = true;
#else
  bool is_chrome_build = false;
#endif

#if defined(OS_CHROMEOS)
  bool is_guest_session = CommandLine::ForCurrentProcess()->HasSwitch(
      chromeos::switches::kGuestSession);
  bool is_stable_channel =
      chrome::VersionInfo::GetChannel() == chrome::VersionInfo::CHANNEL_STABLE;

  if (is_guest_session && is_stable_channel)
    return false;
#endif  // defined(OS_CHROMEOS)

#if defined(OS_ANDROID)
  // TODO(jcivelli): we should not initialize the crash-reporter when it was not
  // enabled. Right now if it is disabled we still generate the minidumps but we
  // do not upload them.
  return is_chrome_build;
#else  // !defined(OS_ANDROID)
  return is_chrome_build && GoogleUpdateSettings::GetCollectStatsConsent();
#endif  // defined(OS_ANDROID)
}

#if defined(OS_ANDROID)
int ChromeBreakpadClient::GetAndroidMinidumpDescriptor() {
  return kAndroidMinidumpDescriptor;
}
#endif

bool ChromeBreakpadClient::EnableBreakpadForProcess(
    const std::string& process_type) {
  return process_type == switches::kRendererProcess ||
         process_type == switches::kPluginProcess ||
         process_type == switches::kPpapiPluginProcess ||
         process_type == switches::kZygoteProcess ||
         process_type == switches::kGpuProcess;
}

}  // namespace chrome

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