chrome/app/chrome_main_delegate.cc

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "chrome/app/chrome_main_delegate.h"
   6
   7 #include "base/base_paths.h"
   8 #include "base/command_line.h"
   9 #include "base/cpu.h"
  10 #include "base/files/file_path.h"
  11 #include "base/i18n/rtl.h"
  12 #include "base/lazy_instance.h"
  13 #include "base/message_loop/message_loop.h"
  14 #include "base/metrics/statistics_recorder.h"
  15 #include "base/metrics/stats_counters.h"
  16 #include "base/path_service.h"
  17 #include "base/process/memory.h"
  18 #include "base/process/process_handle.h"
  19 #include "base/strings/string_util.h"
  20 #include "build/build_config.h"
  21 #include "chrome/browser/chrome_content_browser_client.h"
  22 #include "chrome/browser/defaults.h"
  23 #include "chrome/common/chrome_constants.h"
  24 #include "chrome/common/chrome_content_client.h"
  25 #include "chrome/common/chrome_paths.h"
  26 #include "chrome/common/chrome_paths_internal.h"
  27 #include "chrome/common/chrome_switches.h"
  28 #include "chrome/common/chrome_version_info.h"
  29 #include "chrome/common/crash_keys.h"
  30 #include "chrome/common/logging_chrome.h"
  31 #include "chrome/common/profiling.h"
  32 #include "chrome/common/switch_utils.h"
  33 #include "chrome/common/url_constants.h"
  34 #include "chrome/plugin/chrome_content_plugin_client.h"
  35 #include "chrome/renderer/chrome_content_renderer_client.h"
  36 #include "chrome/utility/chrome_content_utility_client.h"
  37 #include "components/component_updater/component_updater_paths.h"
  38 #include "components/content_settings/core/common/content_settings_pattern.h"
  39 #include "components/startup_metric_utils/startup_metric_utils.h"
  40 #include "content/public/common/content_client.h"
  41 #include "content/public/common/content_paths.h"
  42 #include "extensions/common/constants.h"
  43 #include "ui/base/ui_base_switches.h"
  44
  45 #if defined(OS_WIN)
  46 #include <atlbase.h>
  47 #include <malloc.h>
  48 #include <algorithm>
  49 #include "chrome/app/close_handle_hook_win.h"
  50 #include "chrome/common/child_process_logging.h"
  51 #include "chrome/common/terminate_on_heap_corruption_experiment_win.h"
  52 #include "chrome/common/v8_breakpad_support_win.h"
  53 #include "sandbox/win/src/sandbox.h"
  54 #include "ui/base/resource/resource_bundle_win.h"
  55 #endif
  56
  57 #if defined(OS_MACOSX)
  58 #include "base/mac/mac_util.h"
  59 #include "base/mac/os_crash_dumps.h"
  60 #include "chrome/app/chrome_main_mac.h"
  61 #include "chrome/browser/mac/relauncher.h"
  62 #include "chrome/common/mac/cfbundle_blocker.h"
  63 #include "chrome/common/mac/objc_zombie.h"
  64 #include "components/crash/app/breakpad_mac.h"
  65 #include "ui/base/l10n/l10n_util_mac.h"
  66 #endif
  67
  68 #if defined(OS_POSIX)
  69 #include <locale.h>
  70 #include <signal.h>
  71 #include "chrome/app/chrome_crash_reporter_client.h"
  72 #include "components/crash/app/crash_reporter_client.h"
  73 #endif
  74
  75 #if !defined(DISABLE_NACL) && defined(OS_LINUX)
  76 #include "components/nacl/common/nacl_paths.h"
  77 #include "components/nacl/zygote/nacl_fork_delegate_linux.h"
  78 #endif
  79
  80 #if defined(OS_CHROMEOS)
  81 #include "base/sys_info.h"
  82 #include "chrome/browser/chromeos/boot_times_loader.h"
  83 #include "chromeos/chromeos_paths.h"
  84 #include "chromeos/chromeos_switches.h"
  85 #endif
  86
  87 #if defined(OS_ANDROID)
  88 #include "chrome/common/descriptors_android.h"
  89 #else
  90 // Diagnostics is only available on non-android platforms.
  91 #include "chrome/browser/diagnostics/diagnostics_controller.h"
  92 #include "chrome/browser/diagnostics/diagnostics_writer.h"
  93 #endif
  94
  95 #if defined(USE_X11)
  96 #include <stdlib.h>
  97 #include <string.h>
  98 #include "ui/base/x/x11_util.h"
  99 #endif
 100
 101 #if defined(OS_POSIX) && !defined(OS_MACOSX)
 102 #include "components/crash/app/breakpad_linux.h"
 103 #endif
 104
 105 #if defined(OS_LINUX)
 106 #include "base/environment.h"
 107 #endif
 108
 109 #if defined(OS_MACOSX) || defined(OS_WIN)
 110 #include "chrome/browser/policy/policy_path_parser.h"
 111 #endif
 112
 113 #if !defined(DISABLE_NACL)
 114 #include "components/nacl/common/nacl_switches.h"
 115 #endif
 116
 117 #if !defined(CHROME_MULTIPLE_DLL_CHILD)
 118 base::LazyInstance<chrome::ChromeContentBrowserClient>
 119     g_chrome_content_browser_client = LAZY_INSTANCE_INITIALIZER;
 120 #endif
 121
 122 #if !defined(CHROME_MULTIPLE_DLL_BROWSER)
 123 base::LazyInstance<ChromeContentRendererClient>
 124     g_chrome_content_renderer_client = LAZY_INSTANCE_INITIALIZER;
 125 base::LazyInstance<ChromeContentUtilityClient>
 126     g_chrome_content_utility_client = LAZY_INSTANCE_INITIALIZER;
 127 base::LazyInstance<chrome::ChromeContentPluginClient>
 128     g_chrome_content_plugin_client = LAZY_INSTANCE_INITIALIZER;
 129 #endif
 130
 131 #if defined(OS_POSIX)
 132 base::LazyInstance<chrome::ChromeCrashReporterClient>::Leaky
 133     g_chrome_crash_client = LAZY_INSTANCE_INITIALIZER;
 134 #endif
 135
 136 extern int NaClMain(const content::MainFunctionParams&);
 137 extern int ServiceProcessMain(const content::MainFunctionParams&);
 138
 139 namespace {
 140
 141 #if defined(OS_WIN)
 142 // Early versions of Chrome incorrectly registered a chromehtml: URL handler,
 143 // which gives us nothing but trouble. Avoid launching chrome this way since
 144 // some apps fail to properly escape arguments.
 145 bool HasDeprecatedArguments(const std::wstring& command_line) {
 146   const wchar_t kChromeHtml[] = L"chromehtml:";
 147   std::wstring command_line_lower = command_line;
 148   // We are only searching for ASCII characters so this is OK.
 149   base::StringToLowerASCII(&command_line_lower);
 150   std::wstring::size_type pos = command_line_lower.find(kChromeHtml);
 151   return (pos != std::wstring::npos);
 152 }
 153
 154 // If we try to access a path that is not currently available, we want the call
 155 // to fail rather than show an error dialog.
 156 void SuppressWindowsErrorDialogs() {
 157   UINT new_flags = SEM_FAILCRITICALERRORS |
 158                    SEM_NOOPENFILEERRORBOX;
 159
 160   // Preserve existing error mode.
 161   UINT existing_flags = SetErrorMode(new_flags);
 162   SetErrorMode(existing_flags | new_flags);
 163 }
 164
 165 #endif  // defined(OS_WIN)
 166
 167 #if defined(OS_LINUX)
 168 static void AdjustLinuxOOMScore(const std::string& process_type) {
 169   // Browsers and zygotes should still be killable, but killed last.
 170   const int kZygoteScore = 0;
 171   // The minimum amount to bump a score by.  This is large enough that
 172   // even if it's translated into the old values, it will still go up
 173   // by at least one.
 174   const int kScoreBump = 100;
 175   // This is the lowest score that renderers and extensions start with
 176   // in the OomPriorityManager.
 177   const int kRendererScore = chrome::kLowestRendererOomScore;
 178   // For "miscellaneous" things, we want them after renderers,
 179   // but before plugins.
 180   const int kMiscScore = kRendererScore - kScoreBump;
 181   // We want plugins to die after the renderers.
 182   const int kPluginScore = kMiscScore - kScoreBump;
 183   int score = -1;
 184
 185   DCHECK(kMiscScore > 0);
 186   DCHECK(kPluginScore > 0);
 187
 188   if (process_type == switches::kPluginProcess ||
 189       process_type == switches::kPpapiPluginProcess) {
 190     score = kPluginScore;
 191   } else if (process_type == switches::kPpapiBrokerProcess) {
 192     // The broker should be killed before the PPAPI plugin.
 193     score = kPluginScore + kScoreBump;
 194   } else if (process_type == switches::kUtilityProcess ||
 195              process_type == switches::kGpuProcess ||
 196              process_type == switches::kServiceProcess) {
 197     score = kMiscScore;
 198 #ifndef DISABLE_NACL
 199   } else if (process_type == switches::kNaClLoaderProcess ||
 200              process_type == switches::kNaClLoaderNonSfiProcess) {
 201     score = kPluginScore;
 202 #endif
 203   } else if (process_type == switches::kZygoteProcess ||
 204              process_type.empty()) {
 205     // For zygotes and unlabeled process types, we want to still make
 206     // them killable by the OOM killer.
 207     score = kZygoteScore;
 208   } else if (process_type == switches::kRendererProcess) {
 209     LOG(WARNING) << "process type 'renderer' "
 210                  << "should be created through the zygote.";
 211     // When debugging, this process type can end up being run directly, but
 212     // this isn't the typical path for assigning the OOM score for it.  Still,
 213     // we want to assign a score that is somewhat representative for debugging.
 214     score = kRendererScore;
 215   } else {
 216     NOTREACHED() << "Unknown process type";
 217   }
 218   if (score > -1)
 219     base::AdjustOOMScore(base::GetCurrentProcId(), score);
 220 }
 221 #endif  // defined(OS_LINUX)
 222
 223 // Returns true if this subprocess type needs the ResourceBundle initialized
 224 // and resources loaded.
 225 bool SubprocessNeedsResourceBundle(const std::string& process_type) {
 226   return
 227 #if defined(OS_WIN) || defined(OS_MACOSX)
 228       // Windows needs resources for the default/null plugin.
 229       // Mac needs them for the plugin process name.
 230       process_type == switches::kPluginProcess ||
 231 #endif
 232 #if defined(OS_POSIX) && !defined(OS_MACOSX)
 233       // The zygote process opens the resources for the renderers.
 234       process_type == switches::kZygoteProcess ||
 235 #endif
 236 #if defined(OS_MACOSX)
 237       // Mac needs them too for scrollbar related images and for sandbox
 238       // profiles.
 239 #if !defined(DISABLE_NACL)
 240       process_type == switches::kNaClLoaderProcess ||
 241 #endif
 242       process_type == switches::kPpapiPluginProcess ||
 243       process_type == switches::kPpapiBrokerProcess ||
 244       process_type == switches::kGpuProcess ||
 245 #endif
 246       process_type == switches::kRendererProcess ||
 247       process_type == switches::kUtilityProcess;
 248 }
 249
 250 #if defined(OS_POSIX)
 251 // Check for --version and --product-version; return true if we encountered
 252 // one of these switches and should exit now.
 253 bool HandleVersionSwitches(const CommandLine& command_line) {
 254   const chrome::VersionInfo version_info;
 255
 256 #if !defined(OS_MACOSX)
 257   if (command_line.HasSwitch(switches::kProductVersion)) {
 258     printf("%s\n", version_info.Version().c_str());
 259     return true;
 260   }
 261 #endif
 262
 263   if (command_line.HasSwitch(switches::kVersion)) {
 264     printf("%s %s %s\n",
 265            version_info.Name().c_str(),
 266            version_info.Version().c_str(),
 267            chrome::VersionInfo::GetVersionStringModifier().c_str());
 268     return true;
 269   }
 270
 271   return false;
 272 }
 273
 274 #if !defined(OS_MACOSX) && !defined(OS_CHROMEOS)
 275 // Show the man page if --help or -h is on the command line.
 276 void HandleHelpSwitches(const CommandLine& command_line) {
 277   if (command_line.HasSwitch(switches::kHelp) ||
 278       command_line.HasSwitch(switches::kHelpShort)) {
 279     base::FilePath binary(command_line.argv()[0]);
 280     execlp("man", "man", binary.BaseName().value().c_str(), NULL);
 281     PLOG(FATAL) << "execlp failed";
 282   }
 283 }
 284 #endif
 285
 286 #if !defined(OS_MACOSX) && !defined(OS_ANDROID)
 287 void SIGTERMProfilingShutdown(int signal) {
 288   Profiling::Stop();
 289   struct sigaction sigact;
 290   memset(&sigact, 0, sizeof(sigact));
 291   sigact.sa_handler = SIG_DFL;
 292   CHECK(sigaction(SIGTERM, &sigact, NULL) == 0);
 293   raise(signal);
 294 }
 295
 296 void SetUpProfilingShutdownHandler() {
 297   struct sigaction sigact;
 298   sigact.sa_handler = SIGTERMProfilingShutdown;
 299   sigact.sa_flags = SA_RESETHAND;
 300   sigemptyset(&sigact.sa_mask);
 301   CHECK(sigaction(SIGTERM, &sigact, NULL) == 0);
 302 }
 303 #endif  // !defined(OS_MACOSX) && !defined(OS_ANDROID)
 304
 305 #endif  // OS_POSIX
 306
 307 struct MainFunction {
 308   const char* name;
 309   int (*function)(const content::MainFunctionParams&);
 310 };
 311
 312 // Initializes the user data dir. Must be called before InitializeLocalState().
 313 void InitializeUserDataDir() {
 314   CommandLine* command_line = CommandLine::ForCurrentProcess();
 315   base::FilePath user_data_dir =
 316       command_line->GetSwitchValuePath(switches::kUserDataDir);
 317   std::string process_type =
 318       command_line->GetSwitchValueASCII(switches::kProcessType);
 319
 320 #if defined(OS_LINUX)
 321   // On Linux, Chrome does not support running multiple copies under different
 322   // DISPLAYs, so the profile directory can be specified in the environment to
 323   // support the virtual desktop use-case.
 324   if (user_data_dir.empty()) {
 325     std::string user_data_dir_string;
 326     scoped_ptr<base::Environment> environment(base::Environment::Create());
 327     if (environment->GetVar("CHROME_USER_DATA_DIR", &user_data_dir_string) &&
 328         base::IsStringUTF8(user_data_dir_string)) {
 329       user_data_dir = base::FilePath::FromUTF8Unsafe(user_data_dir_string);
 330     }
 331   }
 332 #endif
 333 #if defined(OS_MACOSX) || defined(OS_WIN)
 334   policy::path_parser::CheckUserDataDirPolicy(&user_data_dir);
 335 #endif
 336
 337   const bool specified_directory_was_invalid = !user_data_dir.empty() &&
 338       !PathService::OverrideAndCreateIfNeeded(chrome::DIR_USER_DATA,
 339           user_data_dir, false, true);
 340   // Save inaccessible or invalid paths so the user may be prompted later.
 341   if (specified_directory_was_invalid)
 342     chrome::SetInvalidSpecifiedUserDataDir(user_data_dir);
 343
 344   // Warn and fail early if the process fails to get a user data directory.
 345   if (!PathService::Get(chrome::DIR_USER_DATA, &user_data_dir)) {
 346     // If an invalid command-line or policy override was specified, the user
 347     // will be given an error with that value. Otherwise, use the directory
 348     // returned by PathService (or the fallback default directory) in the error.
 349     if (!specified_directory_was_invalid) {
 350       // PathService::Get() returns false and yields an empty path if it fails
 351       // to create DIR_USER_DATA. Retrieve the default value manually to display
 352       // a more meaningful error to the user in that case.
 353       if (user_data_dir.empty())
 354         chrome::GetDefaultUserDataDirectory(&user_data_dir);
 355       chrome::SetInvalidSpecifiedUserDataDir(user_data_dir);
 356     }
 357
 358     // The browser process (which is identified by an empty |process_type|) will
 359     // handle the error later; other processes that need the dir crash here.
 360     CHECK(process_type.empty()) << "Unable to get the user data directory "
 361                                 << "for process type: " << process_type;
 362   }
 363
 364   // Append the fallback user data directory to the commandline. Otherwise,
 365   // child or service processes will attempt to use the invalid directory.
 366   if (specified_directory_was_invalid)
 367     command_line->AppendSwitchPath(switches::kUserDataDir, user_data_dir);
 368 }
 369
 370 }  // namespace
 371
 372 ChromeMainDelegate::ChromeMainDelegate() {
 373 #if defined(OS_ANDROID)
 374 // On Android the main entry point time is the time when the Java code starts.
 375 // This happens before the shared library containing this code is even loaded.
 376 // The Java startup code has recorded that time, but the C++ code can't fetch it
 377 // from the Java side until it has initialized the JNI. See
 378 // ChromeMainDelegateAndroid.
 379 #else
 380   startup_metric_utils::RecordMainEntryPointTime();
 381 #endif
 382 }
 383
 384 ChromeMainDelegate::~ChromeMainDelegate() {
 385 }
 386
 387 bool ChromeMainDelegate::BasicStartupComplete(int* exit_code) {
 388 #if defined(OS_CHROMEOS)
 389   chromeos::BootTimesLoader::Get()->SaveChromeMainStats();
 390 #endif
 391
 392   const CommandLine& command_line = *CommandLine::ForCurrentProcess();
 393
 394 #if defined(OS_MACOSX)
 395   // Give the browser process a longer treadmill, since crashes
 396   // there have more impact.
 397   const bool is_browser = !command_line.HasSwitch(switches::kProcessType);
 398   ObjcEvilDoers::ZombieEnable(true, is_browser ? 10000 : 1000);
 399
 400   SetUpBundleOverrides();
 401   chrome::common::mac::EnableCFBundleBlocker();
 402 #endif
 403
 404   Profiling::ProcessStarted();
 405
 406 #if defined(OS_WIN)
 407   v8_breakpad_support::SetUp();
 408 #endif
 409
 410 #if defined(OS_POSIX)
 411   if (HandleVersionSwitches(command_line)) {
 412     *exit_code = 0;
 413     return true;  // Got a --version switch; exit with a success error code.
 414   }
 415 #if !defined(OS_MACOSX) && !defined(OS_CHROMEOS)
 416   // This will directly exit if the user asked for help.
 417   HandleHelpSwitches(command_line);
 418 #endif
 419 #endif  // OS_POSIX
 420
 421 #if defined(OS_WIN)
 422   // Must do this before any other usage of command line!
 423   if (HasDeprecatedArguments(command_line.GetCommandLineString())) {
 424     *exit_code = 1;
 425     return true;
 426   }
 427
 428   InstallCloseHandleHooks();
 429 #endif
 430
 431   chrome::RegisterPathProvider();
 432 #if defined(OS_CHROMEOS)
 433   chromeos::RegisterPathProvider();
 434 #endif
 435 #if !defined(DISABLE_NACL) && defined(OS_LINUX)
 436   nacl::RegisterPathProvider();
 437 #endif
 438
 439   ContentSettingsPattern::SetNonWildcardDomainNonPortScheme(
 440       extensions::kExtensionScheme);
 441
 442 // No support for ANDROID yet as DiagnosticsController needs wchar support.
 443 // TODO(gspencer): That's not true anymore, or at least there are no w-string
 444 // references anymore. Not sure if that means this can be enabled on Android or
 445 // not though.  As there is no easily accessible command line on Android, I'm
 446 // not sure this is a big deal.
 447 #if !defined(OS_ANDROID) && !defined(CHROME_MULTIPLE_DLL_CHILD)
 448   // If we are in diagnostics mode this is the end of the line: after the
 449   // diagnostics are run the process will invariably exit.
 450   if (command_line.HasSwitch(switches::kDiagnostics)) {
 451     diagnostics::DiagnosticsWriter::FormatType format =
 452         diagnostics::DiagnosticsWriter::HUMAN;
 453     if (command_line.HasSwitch(switches::kDiagnosticsFormat)) {
 454       std::string format_str =
 455           command_line.GetSwitchValueASCII(switches::kDiagnosticsFormat);
 456       if (format_str == "machine") {
 457         format = diagnostics::DiagnosticsWriter::MACHINE;
 458       } else if (format_str == "log") {
 459         format = diagnostics::DiagnosticsWriter::LOG;
 460       } else {
 461         DCHECK_EQ("human", format_str);
 462       }
 463     }
 464
 465     diagnostics::DiagnosticsWriter writer(format);
 466     *exit_code = diagnostics::DiagnosticsController::GetInstance()->Run(
 467         command_line, &writer);
 468     diagnostics::DiagnosticsController::GetInstance()->ClearResults();
 469     return true;
 470   }
 471 #endif
 472
 473 #if defined(OS_CHROMEOS)
 474   // Initialize primary user homedir (in multi-profile session) as it may be
 475   // passed as a command line switch.
 476   base::FilePath homedir;
 477   if (command_line.HasSwitch(chromeos::switches::kHomedir)) {
 478     homedir = base::FilePath(
 479         command_line.GetSwitchValueASCII(chromeos::switches::kHomedir));
 480     PathService::OverrideAndCreateIfNeeded(
 481         base::DIR_HOME, homedir, true, false);
 482   }
 483
 484   // If we are recovering from a crash on ChromeOS, then we will do some
 485   // recovery using the diagnostics module, and then continue on. We fake up a
 486   // command line to tell it that we want it to recover, and to preserve the
 487   // original command line.
 488   if (command_line.HasSwitch(chromeos::switches::kLoginUser) ||
 489       command_line.HasSwitch(switches::kDiagnosticsRecovery)) {
 490     // The statistics subsystem needs get initialized soon enough for the
 491     // statistics to be collected.  It's safe to call this more than once.
 492     base::StatisticsRecorder::Initialize();
 493
 494     CommandLine interim_command_line(command_line.GetProgram());
 495     const char* const kSwitchNames[] = {switches::kUserDataDir, };
 496     interim_command_line.CopySwitchesFrom(
 497         command_line, kSwitchNames, arraysize(kSwitchNames));
 498     interim_command_line.AppendSwitch(switches::kDiagnostics);
 499     interim_command_line.AppendSwitch(switches::kDiagnosticsRecovery);
 500
 501     diagnostics::DiagnosticsWriter::FormatType format =
 502         diagnostics::DiagnosticsWriter::LOG;
 503     if (command_line.HasSwitch(switches::kDiagnosticsFormat)) {
 504       std::string format_str =
 505           command_line.GetSwitchValueASCII(switches::kDiagnosticsFormat);
 506       if (format_str == "machine") {
 507         format = diagnostics::DiagnosticsWriter::MACHINE;
 508       } else if (format_str == "human") {
 509         format = diagnostics::DiagnosticsWriter::HUMAN;
 510       } else {
 511         DCHECK_EQ("log", format_str);
 512       }
 513     }
 514
 515     diagnostics::DiagnosticsWriter writer(format);
 516     int diagnostics_exit_code =
 517         diagnostics::DiagnosticsController::GetInstance()->Run(command_line,
 518                                                                &writer);
 519     if (diagnostics_exit_code) {
 520       // Diagnostics has failed somehow, so we exit.
 521       *exit_code = diagnostics_exit_code;
 522       return true;
 523     }
 524
 525     // Now we run the actual recovery tasks.
 526     int recovery_exit_code =
 527         diagnostics::DiagnosticsController::GetInstance()->RunRecovery(
 528             command_line, &writer);
 529
 530     if (recovery_exit_code) {
 531       // Recovery has failed somehow, so we exit.
 532       *exit_code = recovery_exit_code;
 533       return true;
 534     }
 535   } else {  // Not running diagnostics or recovery.
 536     diagnostics::DiagnosticsController::GetInstance()->RecordRegularStartup();
 537   }
 538 #endif
 539
 540   content::SetContentClient(&chrome_content_client_);
 541
 542   return false;
 543 }
 544
 545 #if defined(OS_MACOSX)
 546 void ChromeMainDelegate::InitMacCrashReporter(
 547     const base::CommandLine& command_line,
 548     const std::string& process_type) {
 549   // TODO(mark): Right now, InitCrashReporter() needs to be called after
 550   // CommandLine::Init() and chrome::RegisterPathProvider().  Ideally,
 551   // Breakpad initialization could occur sooner, preferably even before the
 552   // framework dylib is even loaded, to catch potential early crashes.
 553   breakpad::InitCrashReporter(process_type);
 554
 555 #if defined(NDEBUG)
 556   bool is_debug_build = false;
 557 #else
 558   bool is_debug_build = true;
 559 #endif
 560
 561   // Details on when we enable Apple's Crash reporter.
 562   //
 563   // Motivation:
 564   //    In debug mode it takes Apple's crash reporter eons to generate a crash
 565   // dump.
 566   //
 567   // What we do:
 568   // * We only pass crashes for foreground processes to Apple's Crash
 569   //    reporter. At the time of this writing, that means just the Browser
 570   //    process.
 571   // * If Breakpad is enabled, it will pass browser crashes to Crash Reporter
 572   //    itself.
 573   // * If Breakpad is disabled, we only turn on Crash Reporter for the
 574   //    Browser process in release mode.
 575   if (!command_line.HasSwitch(switches::kDisableBreakpad)) {
 576     bool disable_apple_crash_reporter = is_debug_build ||
 577         base::mac::IsBackgroundOnlyProcess();
 578     if (!breakpad::IsCrashReporterEnabled() && disable_apple_crash_reporter) {
 579       base::mac::DisableOSCrashDumps();
 580     }
 581   }
 582
 583   // Mac Chrome is packaged with a main app bundle and a helper app bundle.
 584   // The main app bundle should only be used for the browser process, so it
 585   // should never see a --type switch (switches::kProcessType).  Likewise,
 586   // the helper should always have a --type switch.
 587   //
 588   // This check is done this late so there is already a call to
 589   // base::mac::IsBackgroundOnlyProcess(), so there is no change in
 590   // startup/initialization order.
 591
 592   // The helper's Info.plist marks it as a background only app.
 593   if (base::mac::IsBackgroundOnlyProcess()) {
 594     CHECK(command_line.HasSwitch(switches::kProcessType) &&
 595           !process_type.empty())
 596         << "Helper application requires --type.";
 597
 598     // In addition, some helper flavors only work with certain process types.
 599     base::FilePath executable;
 600     if (PathService::Get(base::FILE_EXE, &executable) &&
 601         executable.value().size() >= 3) {
 602       std::string last_three =
 603           executable.value().substr(executable.value().size() - 3);
 604
 605       if (last_three == " EH") {
 606         CHECK(process_type == switches::kPluginProcess ||
 607               process_type == switches::kUtilityProcess)
 608             << "Executable-heap process requires --type="
 609             << switches::kPluginProcess << " or "
 610             << switches::kUtilityProcess << ", saw " << process_type;
 611       } else if (last_three == " NP") {
 612 #if !defined(DISABLE_NACL)
 613         CHECK_EQ(switches::kNaClLoaderProcess, process_type)
 614             << "Non-PIE process requires --type="
 615             << switches::kNaClLoaderProcess << ", saw " << process_type;
 616 #endif
 617       } else {
 618 #if defined(DISABLE_NACL)
 619         CHECK(process_type != switches::kPluginProcess)
 620             << "Non-executable-heap PIE process is intolerant of --type="
 621             << switches::kPluginProcess;
 622 #else
 623         CHECK(process_type != switches::kPluginProcess &&
 624               process_type != switches::kNaClLoaderProcess)
 625             << "Non-executable-heap PIE process is intolerant of --type="
 626             << switches::kPluginProcess << " and "
 627             << switches::kNaClLoaderProcess << ", saw " << process_type;
 628 #endif
 629       }
 630     }
 631   } else {
 632     CHECK(!command_line.HasSwitch(switches::kProcessType) &&
 633           process_type.empty())
 634         << "Main application forbids --type, saw " << process_type;
 635   }
 636
 637   if (breakpad::IsCrashReporterEnabled())
 638     breakpad::InitCrashProcessInfo(process_type);
 639 }
 640 #endif  // defined(OS_MACOSX)
 641
 642 void ChromeMainDelegate::PreSandboxStartup() {
 643   const CommandLine& command_line = *CommandLine::ForCurrentProcess();
 644   std::string process_type =
 645       command_line.GetSwitchValueASCII(switches::kProcessType);
 646
 647 #if defined(OS_POSIX)
 648   crash_reporter::SetCrashReporterClient(g_chrome_crash_client.Pointer());
 649 #endif
 650
 651 #if defined(OS_MACOSX)
 652   // On the Mac, the child executable lives at a predefined location within
 653   // the app bundle's versioned directory.
 654   PathService::Override(content::CHILD_PROCESS_EXE,
 655                         chrome::GetVersionedDirectory().
 656                         Append(chrome::kHelperProcessExecutablePath));
 657
 658   InitMacCrashReporter(command_line, process_type);
 659 #endif
 660
 661 #if defined(OS_WIN)
 662   child_process_logging::Init();
 663 #endif
 664 #if defined(ARCH_CPU_ARM_FAMILY) && (defined(OS_ANDROID) || defined(OS_LINUX))
 665   // Create an instance of the CPU class to parse /proc/cpuinfo and cache
 666   // cpu_brand info.
 667   base::CPU cpu_info;
 668 #endif
 669
 670   // Initialize the user data dir for any process type that needs it.
 671   if (chrome::ProcessNeedsProfileDir(process_type))
 672     InitializeUserDataDir();
 673
 674   // Register component_updater PathProvider after DIR_USER_DATA overidden by
 675   // command line flags. Maybe move the chrome PathProvider down here also?
 676   component_updater::RegisterPathProvider(chrome::DIR_USER_DATA);
 677
 678   stats_counter_timer_.reset(new base::StatsCounterTimer("Chrome.Init"));
 679   startup_timer_.reset(new base::StatsScope<base::StatsCounterTimer>
 680                        (*stats_counter_timer_));
 681
 682   // Enable Message Loop related state asap.
 683   if (command_line.HasSwitch(switches::kMessageLoopHistogrammer))
 684     base::MessageLoop::EnableHistogrammer(true);
 685
 686 #if !defined(OS_ANDROID)
 687   // Android does InitLogging when library is loaded. Skip here.
 688   logging::OldFileDeletionState file_state =
 689       logging::APPEND_TO_OLD_LOG_FILE;
 690   if (process_type.empty()) {
 691     file_state = logging::DELETE_OLD_LOG_FILE;
 692   }
 693   logging::InitChromeLogging(command_line, file_state);
 694 #endif
 695
 696 #if defined(OS_WIN)
 697   // TODO(zturner): Throbber icons are still stored in chrome.dll, this can be
 698   // killed once those are merged into resources.pak.  See
 699   // GlassBrowserFrameView::InitThrobberIcons() and http://crbug.com/368327.
 700   ui::SetResourcesDataDLL(_AtlBaseModule.GetResourceInstance());
 701 #endif
 702
 703   if (SubprocessNeedsResourceBundle(process_type)) {
 704     // Initialize ResourceBundle which handles files loaded from external
 705     // sources.  The language should have been passed in to us from the
 706     // browser process as a command line flag.
 707 #if defined(DISABLE_NACL)
 708     DCHECK(command_line.HasSwitch(switches::kLang) ||
 709            process_type == switches::kZygoteProcess ||
 710            process_type == switches::kGpuProcess ||
 711            process_type == switches::kPpapiBrokerProcess ||
 712            process_type == switches::kPpapiPluginProcess);
 713 #else
 714     DCHECK(command_line.HasSwitch(switches::kLang) ||
 715            process_type == switches::kZygoteProcess ||
 716            process_type == switches::kGpuProcess ||
 717            process_type == switches::kNaClLoaderProcess ||
 718            process_type == switches::kPpapiBrokerProcess ||
 719            process_type == switches::kPpapiPluginProcess);
 720 #endif
 721
 722     // TODO(markusheintz): The command line flag --lang is actually processed
 723     // by the CommandLinePrefStore, and made available through the PrefService
 724     // via the preference prefs::kApplicationLocale. The browser process uses
 725     // the --lang flag to pass the value of the PrefService in here. Maybe
 726     // this value could be passed in a different way.
 727     const std::string locale =
 728         command_line.GetSwitchValueASCII(switches::kLang);
 729 #if defined(OS_ANDROID)
 730     // The renderer sandbox prevents us from accessing our .pak files directly.
 731     // Therefore file descriptors to the .pak files that we need are passed in
 732     // at process creation time.
 733     int locale_pak_fd = base::GlobalDescriptors::GetInstance()->MaybeGet(
 734         kAndroidLocalePakDescriptor);
 735     CHECK(locale_pak_fd != -1);
 736     ResourceBundle::InitSharedInstanceWithPakFileRegion(
 737         base::File(locale_pak_fd), base::MemoryMappedFile::Region::kWholeFile);
 738
 739     int extra_pak_keys[] = {
 740       kAndroidChrome100PercentPakDescriptor,
 741       kAndroidUIResourcesPakDescriptor,
 742     };
 743     for (size_t i = 0; i < arraysize(extra_pak_keys); ++i) {
 744       int pak_fd =
 745           base::GlobalDescriptors::GetInstance()->MaybeGet(extra_pak_keys[i]);
 746       CHECK(pak_fd != -1);
 747       ResourceBundle::GetSharedInstance().AddDataPackFromFile(
 748           base::File(pak_fd), ui::SCALE_FACTOR_100P);
 749     }
 750
 751     base::i18n::SetICUDefaultLocale(locale);
 752     const std::string loaded_locale = locale;
 753 #else
 754     const std::string loaded_locale =
 755         ui::ResourceBundle::InitSharedInstanceWithLocale(
 756             locale, NULL, ui::ResourceBundle::LOAD_COMMON_RESOURCES);
 757
 758     base::FilePath resources_pack_path;
 759     PathService::Get(chrome::FILE_RESOURCES_PACK, &resources_pack_path);
 760     ResourceBundle::GetSharedInstance().AddDataPackFromPath(
 761         resources_pack_path, ui::SCALE_FACTOR_NONE);
 762 #endif
 763     CHECK(!loaded_locale.empty()) << "Locale could not be found for " <<
 764         locale;
 765
 766 #if !defined(CHROME_MULTIPLE_DLL_BROWSER)
 767     if (process_type == switches::kUtilityProcess ||
 768         process_type == switches::kZygoteProcess) {
 769       ChromeContentUtilityClient::PreSandboxStartup();
 770     }
 771 #endif
 772   }
 773
 774 #if defined(OS_POSIX) && !defined(OS_MACOSX)
 775   // Zygote needs to call InitCrashReporter() in RunZygote().
 776   if (process_type != switches::kZygoteProcess) {
 777 #if defined(OS_ANDROID)
 778     if (process_type.empty())
 779       breakpad::InitCrashReporter(process_type);
 780     else
 781       breakpad::InitNonBrowserCrashReporterForAndroid(process_type);
 782 #else  // !defined(OS_ANDROID)
 783     breakpad::InitCrashReporter(process_type);
 784 #endif  // defined(OS_ANDROID)
 785   }
 786 #endif  // defined(OS_POSIX) && !defined(OS_MACOSX)
 787
 788   // After all the platform Breakpads have been initialized, store the command
 789   // line for crash reporting.
 790   crash_keys::SetSwitchesFromCommandLine(&command_line);
 791 }
 792
 793 void ChromeMainDelegate::SandboxInitialized(const std::string& process_type) {
 794   startup_timer_->Stop();  // End of Startup Time Measurement.
 795
 796   // Note: If you are adding a new process type below, be sure to adjust the
 797   // AdjustLinuxOOMScore function too.
 798 #if defined(OS_LINUX)
 799   AdjustLinuxOOMScore(process_type);
 800 #endif
 801 #if defined(OS_WIN)
 802   SuppressWindowsErrorDialogs();
 803 #endif
 804 }
 805
 806 int ChromeMainDelegate::RunProcess(
 807     const std::string& process_type,
 808     const content::MainFunctionParams& main_function_params) {
 809   // ANDROID doesn't support "service", so no ServiceProcessMain, and arraysize
 810   // doesn't support empty array. So we comment out the block for Android.
 811 #if !defined(OS_ANDROID)
 812   static const MainFunction kMainFunctions[] = {
 813 #if defined(ENABLE_PRINT_PREVIEW) && !defined(CHROME_MULTIPLE_DLL_CHILD)
 814     { switches::kServiceProcess,     ServiceProcessMain },
 815 #endif
 816
 817 #if defined(OS_MACOSX)
 818     { switches::kRelauncherProcess,
 819       mac_relauncher::internal::RelauncherMain },
 820 #endif
 821
 822     // This entry is not needed on Linux, where the NaCl loader
 823     // process is launched via nacl_helper instead.
 824 #if !defined(DISABLE_NACL) && !defined(CHROME_MULTIPLE_DLL_BROWSER) && \
 825     !defined(OS_LINUX)
 826     { switches::kNaClLoaderProcess,  NaClMain },
 827 #else
 828     { "<invalid>", NULL },  // To avoid constant array of size 0
 829                             // when DISABLE_NACL and CHROME_MULTIPLE_DLL_CHILD
 830 #endif  // DISABLE_NACL
 831   };
 832
 833   for (size_t i = 0; i < arraysize(kMainFunctions); ++i) {
 834     if (process_type == kMainFunctions[i].name)
 835       return kMainFunctions[i].function(main_function_params);
 836   }
 837 #endif
 838
 839   return -1;
 840 }
 841
 842 void ChromeMainDelegate::ProcessExiting(const std::string& process_type) {
 843   if (SubprocessNeedsResourceBundle(process_type))
 844     ResourceBundle::CleanupSharedInstance();
 845 #if !defined(OS_ANDROID)
 846   logging::CleanupChromeLogging();
 847 #else
 848   // Android doesn't use InitChromeLogging, so we close the log file manually.
 849   logging::CloseLogFile();
 850 #endif  // !defined(OS_ANDROID)
 851
 852 #if defined(OS_WIN)
 853   RemoveCloseHandleHooks();
 854 #endif
 855 }
 856
 857 #if defined(OS_MACOSX)
 858 bool ChromeMainDelegate::ProcessRegistersWithSystemProcess(
 859     const std::string& process_type) {
 860 #if defined(DISABLE_NACL)
 861   return false;
 862 #else
 863   return process_type == switches::kNaClLoaderProcess;
 864 #endif
 865 }
 866
 867 bool ChromeMainDelegate::ShouldSendMachPort(const std::string& process_type) {
 868   return process_type != switches::kRelauncherProcess &&
 869       process_type != switches::kServiceProcess;
 870 }
 871
 872 bool ChromeMainDelegate::DelaySandboxInitialization(
 873     const std::string& process_type) {
 874 #if !defined(DISABLE_NACL)
 875   // NaClLoader does this in NaClMainPlatformDelegate::EnableSandbox().
 876   // No sandbox needed for relauncher.
 877   if (process_type == switches::kNaClLoaderProcess)
 878     return true;
 879 #endif
 880   return process_type == switches::kRelauncherProcess;
 881 }
 882 #elif defined(OS_POSIX) && !defined(OS_ANDROID)
 883 void ChromeMainDelegate::ZygoteStarting(
 884     ScopedVector<content::ZygoteForkDelegate>* delegates) {
 885 #if !defined(DISABLE_NACL)
 886   nacl::AddNaClZygoteForkDelegates(delegates);
 887 #endif
 888 }
 889
 890 void ChromeMainDelegate::ZygoteForked() {
 891   Profiling::ProcessStarted();
 892   if (Profiling::BeingProfiled()) {
 893     base::debug::RestartProfilingAfterFork();
 894     SetUpProfilingShutdownHandler();
 895   }
 896
 897   // Needs to be called after we have chrome::DIR_USER_DATA.  BrowserMain sets
 898   // this up for the browser process in a different manner.
 899   const CommandLine* command_line = CommandLine::ForCurrentProcess();
 900   std::string process_type =
 901       command_line->GetSwitchValueASCII(switches::kProcessType);
 902   breakpad::InitCrashReporter(process_type);
 903
 904   // Reset the command line for the newly spawned process.
 905   crash_keys::SetSwitchesFromCommandLine(command_line);
 906 }
 907
 908 #endif  // OS_MACOSX
 909
 910 #if defined(OS_WIN)
 911 bool ChromeMainDelegate::ShouldEnableTerminationOnHeapCorruption() {
 912   return !ShouldExperimentallyDisableTerminateOnHeapCorruption();
 913 }
 914 #endif  // OS_WIN
 915
 916 content::ContentBrowserClient*
 917 ChromeMainDelegate::CreateContentBrowserClient() {
 918 #if defined(CHROME_MULTIPLE_DLL_CHILD)
 919   return NULL;
 920 #else
 921   return g_chrome_content_browser_client.Pointer();
 922 #endif
 923 }
 924
 925 content::ContentPluginClient* ChromeMainDelegate::CreateContentPluginClient() {
 926 #if defined(CHROME_MULTIPLE_DLL_BROWSER)
 927   return NULL;
 928 #else
 929   return g_chrome_content_plugin_client.Pointer();
 930 #endif
 931 }
 932
 933 content::ContentRendererClient*
 934 ChromeMainDelegate::CreateContentRendererClient() {
 935 #if defined(CHROME_MULTIPLE_DLL_BROWSER)
 936   return NULL;
 937 #else
 938   return g_chrome_content_renderer_client.Pointer();
 939 #endif
 940 }
 941
 942 content::ContentUtilityClient*
 943 ChromeMainDelegate::CreateContentUtilityClient() {
 944 #if defined(CHROME_MULTIPLE_DLL_BROWSER)
 945   return NULL;
 946 #else
 947   return g_chrome_content_utility_client.Pointer();
 948 #endif
 949 }