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/path_service.h"
  16 #include "base/process/memory.h"
  17 #include "base/process/process_handle.h"
  18 #include "base/strings/string_util.h"
  19 #include "build/build_config.h"
  20 #include "chrome/browser/chrome_content_browser_client.h"
  21 #include "chrome/browser/defaults.h"
  22 #include "chrome/common/chrome_constants.h"
  23 #include "chrome/common/chrome_content_client.h"
  24 #include "chrome/common/chrome_paths.h"
  25 #include "chrome/common/chrome_paths_internal.h"
  26 #include "chrome/common/chrome_switches.h"
  27 #include "chrome/common/chrome_version_info.h"
  28 #include "chrome/common/crash_keys.h"
  29 #include "chrome/common/logging_chrome.h"
  30 #include "chrome/common/profiling.h"
  31 #include "chrome/common/switch_utils.h"
  32 #include "chrome/common/url_constants.h"
  33 #include "chrome/plugin/chrome_content_plugin_client.h"
  34 #include "chrome/renderer/chrome_content_renderer_client.h"
  35 #include "chrome/utility/chrome_content_utility_client.h"
  36 #include "components/component_updater/component_updater_paths.h"
  37 #include "components/content_settings/core/common/content_settings_pattern.h"
  38 #include "components/startup_metric_utils/startup_metric_utils.h"
  39 #include "content/public/common/content_client.h"
  40 #include "content/public/common/content_paths.h"
  41 #include "extensions/common/constants.h"
  42 #include "ui/base/ui_base_switches.h"
  43
  44 #if defined(OS_WIN)
  45 #include <atlbase.h>
  46 #include <malloc.h>
  47 #include <algorithm>
  48 #include "chrome/app/close_handle_hook_win.h"
  49 #include "chrome/common/child_process_logging.h"
  50 #include "chrome/common/v8_breakpad_support_win.h"
  51 #include "sandbox/win/src/sandbox.h"
  52 #include "ui/base/resource/resource_bundle_win.h"
  53 #endif
  54
  55 #if defined(OS_MACOSX)
  56 #include "base/mac/foundation_util.h"
  57 #include "chrome/app/chrome_main_mac.h"
  58 #include "chrome/browser/mac/relauncher.h"
  59 #include "chrome/common/mac/cfbundle_blocker.h"
  60 #include "chrome/common/mac/objc_zombie.h"
  61 #include "components/crash/app/crashpad_mac.h"
  62 #include "ui/base/l10n/l10n_util_mac.h"
  63 #endif
  64
  65 #if defined(OS_POSIX)
  66 #include <locale.h>
  67 #include <signal.h>
  68 #include "chrome/app/chrome_crash_reporter_client.h"
  69 #include "components/crash/app/crash_reporter_client.h"
  70 #endif
  71
  72 #if !defined(DISABLE_NACL) && defined(OS_LINUX)
  73 #include "components/nacl/common/nacl_paths.h"
  74 #include "components/nacl/zygote/nacl_fork_delegate_linux.h"
  75 #endif
  76
  77 #if defined(OS_CHROMEOS)
  78 #include "base/sys_info.h"
  79 #include "chrome/browser/chromeos/boot_times_recorder.h"
  80 #include "chromeos/chromeos_paths.h"
  81 #include "chromeos/chromeos_switches.h"
  82 #endif
  83
  84 #if defined(OS_ANDROID)
  85 #include "chrome/common/descriptors_android.h"
  86 #else
  87 // Diagnostics is only available on non-android platforms.
  88 #include "chrome/browser/diagnostics/diagnostics_controller.h"
  89 #include "chrome/browser/diagnostics/diagnostics_writer.h"
  90 #endif
  91
  92 #if defined(USE_X11)
  93 #include <stdlib.h>
  94 #include <string.h>
  95 #include "ui/base/x/x11_util.h"
  96 #endif
  97
  98 #if defined(OS_POSIX) && !defined(OS_MACOSX)
  99 #include "components/crash/app/breakpad_linux.h"
 100 #endif
 101
 102 #if defined(OS_LINUX)
 103 #include "base/environment.h"
 104 #endif
 105
 106 #if defined(OS_MACOSX) || defined(OS_WIN)
 107 #include "chrome/browser/policy/policy_path_parser.h"
 108 #endif
 109
 110 #if !defined(DISABLE_NACL)
 111 #include "components/nacl/common/nacl_switches.h"
 112 #include "components/nacl/renderer/plugin/ppapi_entrypoints.h"
 113 #endif
 114
 115 #if defined(ENABLE_REMOTING)
 116 #include "remoting/client/plugin/pepper_entrypoints.h"
 117 #endif
 118
 119 #if defined(ENABLE_PLUGINS) && (defined(CHROME_MULTIPLE_DLL_CHILD) || \
 120     !defined(CHROME_MULTIPLE_DLL_BROWSER))
 121 #include "pdf/pdf.h"
 122 #endif
 123
 124 #if !defined(CHROME_MULTIPLE_DLL_BROWSER)
 125 #include "chrome/child/pdf_child_init.h"
 126
 127 base::LazyInstance<ChromeContentRendererClient>
 128     g_chrome_content_renderer_client = LAZY_INSTANCE_INITIALIZER;
 129 base::LazyInstance<ChromeContentUtilityClient>
 130     g_chrome_content_utility_client = LAZY_INSTANCE_INITIALIZER;
 131 base::LazyInstance<chrome::ChromeContentPluginClient>
 132     g_chrome_content_plugin_client = LAZY_INSTANCE_INITIALIZER;
 133 #endif
 134
 135 #if !defined(CHROME_MULTIPLE_DLL_CHILD)
 136 base::LazyInstance<chrome::ChromeContentBrowserClient>
 137     g_chrome_content_browser_client = LAZY_INSTANCE_INITIALIZER;
 138 #endif
 139
 140 #if defined(OS_POSIX)
 141 base::LazyInstance<chrome::ChromeCrashReporterClient>::Leaky
 142     g_chrome_crash_client = LAZY_INSTANCE_INITIALIZER;
 143 #endif
 144
 145 extern int NaClMain(const content::MainFunctionParams&);
 146 extern int ServiceProcessMain(const content::MainFunctionParams&);
 147
 148 namespace {
 149
 150 #if defined(OS_WIN)
 151 // Early versions of Chrome incorrectly registered a chromehtml: URL handler,
 152 // which gives us nothing but trouble. Avoid launching chrome this way since
 153 // some apps fail to properly escape arguments.
 154 bool HasDeprecatedArguments(const std::wstring& command_line) {
 155   const wchar_t kChromeHtml[] = L"chromehtml:";
 156   std::wstring command_line_lower = command_line;
 157   // We are only searching for ASCII characters so this is OK.
 158   base::StringToLowerASCII(&command_line_lower);
 159   std::wstring::size_type pos = command_line_lower.find(kChromeHtml);
 160   return (pos != std::wstring::npos);
 161 }
 162
 163 // If we try to access a path that is not currently available, we want the call
 164 // to fail rather than show an error dialog.
 165 void SuppressWindowsErrorDialogs() {
 166   UINT new_flags = SEM_FAILCRITICALERRORS |
 167                    SEM_NOOPENFILEERRORBOX;
 168
 169   // Preserve existing error mode.
 170   UINT existing_flags = SetErrorMode(new_flags);
 171   SetErrorMode(existing_flags | new_flags);
 172 }
 173
 174 #endif  // defined(OS_WIN)
 175
 176 #if defined(OS_LINUX)
 177 static void AdjustLinuxOOMScore(const std::string& process_type) {
 178   // Browsers and zygotes should still be killable, but killed last.
 179   const int kZygoteScore = 0;
 180   // The minimum amount to bump a score by.  This is large enough that
 181   // even if it's translated into the old values, it will still go up
 182   // by at least one.
 183   const int kScoreBump = 100;
 184   // This is the lowest score that renderers and extensions start with
 185   // in the OomPriorityManager.
 186   const int kRendererScore = chrome::kLowestRendererOomScore;
 187   // For "miscellaneous" things, we want them after renderers,
 188   // but before plugins.
 189   const int kMiscScore = kRendererScore - kScoreBump;
 190   // We want plugins to die after the renderers.
 191   const int kPluginScore = kMiscScore - kScoreBump;
 192   int score = -1;
 193
 194   DCHECK(kMiscScore > 0);
 195   DCHECK(kPluginScore > 0);
 196
 197   if (process_type == switches::kPluginProcess ||
 198       process_type == switches::kPpapiPluginProcess) {
 199     score = kPluginScore;
 200   } else if (process_type == switches::kPpapiBrokerProcess) {
 201     // The broker should be killed before the PPAPI plugin.
 202     score = kPluginScore + kScoreBump;
 203   } else if (process_type == switches::kUtilityProcess ||
 204              process_type == switches::kGpuProcess ||
 205              process_type == switches::kServiceProcess) {
 206     score = kMiscScore;
 207 #ifndef DISABLE_NACL
 208   } else if (process_type == switches::kNaClLoaderProcess ||
 209              process_type == switches::kNaClLoaderNonSfiProcess) {
 210     score = kPluginScore;
 211 #endif
 212   } else if (process_type == switches::kZygoteProcess ||
 213              process_type.empty()) {
 214     // For zygotes and unlabeled process types, we want to still make
 215     // them killable by the OOM killer.
 216     score = kZygoteScore;
 217   } else if (process_type == switches::kRendererProcess) {
 218     LOG(WARNING) << "process type 'renderer' "
 219                  << "should be created through the zygote.";
 220     // When debugging, this process type can end up being run directly, but
 221     // this isn't the typical path for assigning the OOM score for it.  Still,
 222     // we want to assign a score that is somewhat representative for debugging.
 223     score = kRendererScore;
 224   } else {
 225     NOTREACHED() << "Unknown process type";
 226   }
 227   if (score > -1)
 228     base::AdjustOOMScore(base::GetCurrentProcId(), score);
 229 }
 230 #endif  // defined(OS_LINUX)
 231
 232 // Returns true if this subprocess type needs the ResourceBundle initialized
 233 // and resources loaded.
 234 bool SubprocessNeedsResourceBundle(const std::string& process_type) {
 235   return
 236 #if defined(OS_WIN) || defined(OS_MACOSX)
 237       // Windows needs resources for the default/null plugin.
 238       // Mac needs them for the plugin process name.
 239       process_type == switches::kPluginProcess ||
 240 #endif
 241 #if defined(OS_POSIX) && !defined(OS_MACOSX)
 242       // The zygote process opens the resources for the renderers.
 243       process_type == switches::kZygoteProcess ||
 244 #endif
 245 #if defined(OS_MACOSX)
 246       // Mac needs them too for scrollbar related images and for sandbox
 247       // profiles.
 248 #if !defined(DISABLE_NACL)
 249       process_type == switches::kNaClLoaderProcess ||
 250 #endif
 251       process_type == switches::kPpapiPluginProcess ||
 252       process_type == switches::kPpapiBrokerProcess ||
 253       process_type == switches::kGpuProcess ||
 254 #endif
 255       process_type == switches::kRendererProcess ||
 256       process_type == switches::kUtilityProcess;
 257 }
 258
 259 #if defined(OS_POSIX)
 260 // Check for --version and --product-version; return true if we encountered
 261 // one of these switches and should exit now.
 262 bool HandleVersionSwitches(const base::CommandLine& command_line) {
 263   const chrome::VersionInfo version_info;
 264
 265 #if !defined(OS_MACOSX)
 266   if (command_line.HasSwitch(switches::kProductVersion)) {
 267     printf("%s\n", version_info.Version().c_str());
 268     return true;
 269   }
 270 #endif
 271
 272   if (command_line.HasSwitch(switches::kVersion)) {
 273     printf("%s %s %s\n",
 274            version_info.Name().c_str(),
 275            version_info.Version().c_str(),
 276            chrome::VersionInfo::GetVersionStringModifier().c_str());
 277     return true;
 278   }
 279
 280   return false;
 281 }
 282
 283 #if !defined(OS_MACOSX) && !defined(OS_CHROMEOS)
 284 // Show the man page if --help or -h is on the command line.
 285 void HandleHelpSwitches(const base::CommandLine& command_line) {
 286   if (command_line.HasSwitch(switches::kHelp) ||
 287       command_line.HasSwitch(switches::kHelpShort)) {
 288     base::FilePath binary(command_line.argv()[0]);
 289     execlp("man", "man", binary.BaseName().value().c_str(), NULL);
 290     PLOG(FATAL) << "execlp failed";
 291   }
 292 }
 293 #endif
 294
 295 #if !defined(OS_MACOSX) && !defined(OS_ANDROID)
 296 void SIGTERMProfilingShutdown(int signal) {
 297   Profiling::Stop();
 298   struct sigaction sigact;
 299   memset(&sigact, 0, sizeof(sigact));
 300   sigact.sa_handler = SIG_DFL;
 301   CHECK(sigaction(SIGTERM, &sigact, NULL) == 0);
 302   raise(signal);
 303 }
 304
 305 void SetUpProfilingShutdownHandler() {
 306   struct sigaction sigact;
 307   sigact.sa_handler = SIGTERMProfilingShutdown;
 308   sigact.sa_flags = SA_RESETHAND;
 309   sigemptyset(&sigact.sa_mask);
 310   CHECK(sigaction(SIGTERM, &sigact, NULL) == 0);
 311 }
 312 #endif  // !defined(OS_MACOSX) && !defined(OS_ANDROID)
 313
 314 #endif  // OS_POSIX
 315
 316 struct MainFunction {
 317   const char* name;
 318   int (*function)(const content::MainFunctionParams&);
 319 };
 320
 321 // Initializes the user data dir. Must be called before InitializeLocalState().
 322 void InitializeUserDataDir() {
 323   base::CommandLine* command_line = base::CommandLine::ForCurrentProcess();
 324   base::FilePath user_data_dir =
 325       command_line->GetSwitchValuePath(switches::kUserDataDir);
 326   std::string process_type =
 327       command_line->GetSwitchValueASCII(switches::kProcessType);
 328
 329 #if defined(OS_LINUX)
 330   // On Linux, Chrome does not support running multiple copies under different
 331   // DISPLAYs, so the profile directory can be specified in the environment to
 332   // support the virtual desktop use-case.
 333   if (user_data_dir.empty()) {
 334     std::string user_data_dir_string;
 335     scoped_ptr<base::Environment> environment(base::Environment::Create());
 336     if (environment->GetVar("CHROME_USER_DATA_DIR", &user_data_dir_string) &&
 337         base::IsStringUTF8(user_data_dir_string)) {
 338       user_data_dir = base::FilePath::FromUTF8Unsafe(user_data_dir_string);
 339     }
 340   }
 341 #endif
 342 #if defined(OS_MACOSX) || defined(OS_WIN)
 343   policy::path_parser::CheckUserDataDirPolicy(&user_data_dir);
 344 #endif
 345
 346   // On Windows, trailing separators leave Chrome in a bad state.
 347   // See crbug.com/464616.
 348   if (user_data_dir.EndsWithSeparator())
 349     user_data_dir = user_data_dir.StripTrailingSeparators();
 350
 351   const bool specified_directory_was_invalid = !user_data_dir.empty() &&
 352       !PathService::OverrideAndCreateIfNeeded(chrome::DIR_USER_DATA,
 353           user_data_dir, false, true);
 354   // Save inaccessible or invalid paths so the user may be prompted later.
 355   if (specified_directory_was_invalid)
 356     chrome::SetInvalidSpecifiedUserDataDir(user_data_dir);
 357
 358   // Warn and fail early if the process fails to get a user data directory.
 359   if (!PathService::Get(chrome::DIR_USER_DATA, &user_data_dir)) {
 360     // If an invalid command-line or policy override was specified, the user
 361     // will be given an error with that value. Otherwise, use the directory
 362     // returned by PathService (or the fallback default directory) in the error.
 363     if (!specified_directory_was_invalid) {
 364       // PathService::Get() returns false and yields an empty path if it fails
 365       // to create DIR_USER_DATA. Retrieve the default value manually to display
 366       // a more meaningful error to the user in that case.
 367       if (user_data_dir.empty())
 368         chrome::GetDefaultUserDataDirectory(&user_data_dir);
 369       chrome::SetInvalidSpecifiedUserDataDir(user_data_dir);
 370     }
 371
 372     // The browser process (which is identified by an empty |process_type|) will
 373     // handle the error later; other processes that need the dir crash here.
 374     CHECK(process_type.empty()) << "Unable to get the user data directory "
 375                                 << "for process type: " << process_type;
 376   }
 377
 378   // Append the fallback user data directory to the commandline. Otherwise,
 379   // child or service processes will attempt to use the invalid directory.
 380   if (specified_directory_was_invalid)
 381     command_line->AppendSwitchPath(switches::kUserDataDir, user_data_dir);
 382 }
 383
 384 }  // namespace
 385
 386 ChromeMainDelegate::ChromeMainDelegate() {
 387 #if defined(OS_ANDROID)
 388 // On Android the main entry point time is the time when the Java code starts.
 389 // This happens before the shared library containing this code is even loaded.
 390 // The Java startup code has recorded that time, but the C++ code can't fetch it
 391 // from the Java side until it has initialized the JNI. See
 392 // ChromeMainDelegateAndroid.
 393 #else
 394   startup_metric_utils::RecordMainEntryPointTime();
 395 #endif
 396 }
 397
 398 ChromeMainDelegate::~ChromeMainDelegate() {
 399 }
 400
 401 bool ChromeMainDelegate::BasicStartupComplete(int* exit_code) {
 402 #if defined(OS_CHROMEOS)
 403   chromeos::BootTimesRecorder::Get()->SaveChromeMainStats();
 404 #endif
 405
 406   const base::CommandLine& command_line =
 407       *base::CommandLine::ForCurrentProcess();
 408
 409 #if defined(OS_MACOSX)
 410   // Give the browser process a longer treadmill, since crashes
 411   // there have more impact.
 412   const bool is_browser = !command_line.HasSwitch(switches::kProcessType);
 413   ObjcEvilDoers::ZombieEnable(true, is_browser ? 10000 : 1000);
 414
 415   SetUpBundleOverrides();
 416   chrome::common::mac::EnableCFBundleBlocker();
 417 #endif
 418
 419   Profiling::ProcessStarted();
 420
 421 #if defined(OS_WIN)
 422   v8_breakpad_support::SetUp();
 423 #endif
 424
 425 #if defined(OS_POSIX)
 426   if (HandleVersionSwitches(command_line)) {
 427     *exit_code = 0;
 428     return true;  // Got a --version switch; exit with a success error code.
 429   }
 430 #if !defined(OS_MACOSX) && !defined(OS_CHROMEOS)
 431   // This will directly exit if the user asked for help.
 432   HandleHelpSwitches(command_line);
 433 #endif
 434 #endif  // OS_POSIX
 435
 436 #if defined(OS_WIN)
 437   // Must do this before any other usage of command line!
 438   if (HasDeprecatedArguments(command_line.GetCommandLineString())) {
 439     *exit_code = 1;
 440     return true;
 441   }
 442
 443   InstallCloseHandleHooks();
 444 #endif
 445
 446   chrome::RegisterPathProvider();
 447 #if defined(OS_CHROMEOS)
 448   chromeos::RegisterPathProvider();
 449 #endif
 450 #if !defined(DISABLE_NACL) && defined(OS_LINUX)
 451   nacl::RegisterPathProvider();
 452 #endif
 453
 454   ContentSettingsPattern::SetNonWildcardDomainNonPortScheme(
 455       extensions::kExtensionScheme);
 456
 457 // No support for ANDROID yet as DiagnosticsController needs wchar support.
 458 // TODO(gspencer): That's not true anymore, or at least there are no w-string
 459 // references anymore. Not sure if that means this can be enabled on Android or
 460 // not though.  As there is no easily accessible command line on Android, I'm
 461 // not sure this is a big deal.
 462 #if !defined(OS_ANDROID) && !defined(CHROME_MULTIPLE_DLL_CHILD)
 463   // If we are in diagnostics mode this is the end of the line: after the
 464   // diagnostics are run the process will invariably exit.
 465   if (command_line.HasSwitch(switches::kDiagnostics)) {
 466     diagnostics::DiagnosticsWriter::FormatType format =
 467         diagnostics::DiagnosticsWriter::HUMAN;
 468     if (command_line.HasSwitch(switches::kDiagnosticsFormat)) {
 469       std::string format_str =
 470           command_line.GetSwitchValueASCII(switches::kDiagnosticsFormat);
 471       if (format_str == "machine") {
 472         format = diagnostics::DiagnosticsWriter::MACHINE;
 473       } else if (format_str == "log") {
 474         format = diagnostics::DiagnosticsWriter::LOG;
 475       } else {
 476         DCHECK_EQ("human", format_str);
 477       }
 478     }
 479
 480     diagnostics::DiagnosticsWriter writer(format);
 481     *exit_code = diagnostics::DiagnosticsController::GetInstance()->Run(
 482         command_line, &writer);
 483     diagnostics::DiagnosticsController::GetInstance()->ClearResults();
 484     return true;
 485   }
 486 #endif
 487
 488 #if defined(OS_CHROMEOS)
 489   // Initialize primary user homedir (in multi-profile session) as it may be
 490   // passed as a command line switch.
 491   base::FilePath homedir;
 492   if (command_line.HasSwitch(chromeos::switches::kHomedir)) {
 493     homedir = base::FilePath(
 494         command_line.GetSwitchValueASCII(chromeos::switches::kHomedir));
 495     PathService::OverrideAndCreateIfNeeded(
 496         base::DIR_HOME, homedir, true, false);
 497   }
 498
 499   // If we are recovering from a crash on ChromeOS, then we will do some
 500   // recovery using the diagnostics module, and then continue on. We fake up a
 501   // command line to tell it that we want it to recover, and to preserve the
 502   // original command line.
 503   if (command_line.HasSwitch(chromeos::switches::kLoginUser) ||
 504       command_line.HasSwitch(switches::kDiagnosticsRecovery)) {
 505     // The statistics subsystem needs get initialized soon enough for the
 506     // statistics to be collected.  It's safe to call this more than once.
 507     base::StatisticsRecorder::Initialize();
 508
 509     base::CommandLine interim_command_line(command_line.GetProgram());
 510     const char* const kSwitchNames[] = {switches::kUserDataDir, };
 511     interim_command_line.CopySwitchesFrom(
 512         command_line, kSwitchNames, arraysize(kSwitchNames));
 513     interim_command_line.AppendSwitch(switches::kDiagnostics);
 514     interim_command_line.AppendSwitch(switches::kDiagnosticsRecovery);
 515
 516     diagnostics::DiagnosticsWriter::FormatType format =
 517         diagnostics::DiagnosticsWriter::LOG;
 518     if (command_line.HasSwitch(switches::kDiagnosticsFormat)) {
 519       std::string format_str =
 520           command_line.GetSwitchValueASCII(switches::kDiagnosticsFormat);
 521       if (format_str == "machine") {
 522         format = diagnostics::DiagnosticsWriter::MACHINE;
 523       } else if (format_str == "human") {
 524         format = diagnostics::DiagnosticsWriter::HUMAN;
 525       } else {
 526         DCHECK_EQ("log", format_str);
 527       }
 528     }
 529
 530     diagnostics::DiagnosticsWriter writer(format);
 531     int diagnostics_exit_code =
 532         diagnostics::DiagnosticsController::GetInstance()->Run(command_line,
 533                                                                &writer);
 534     if (diagnostics_exit_code) {
 535       // Diagnostics has failed somehow, so we exit.
 536       *exit_code = diagnostics_exit_code;
 537       return true;
 538     }
 539
 540     // Now we run the actual recovery tasks.
 541     int recovery_exit_code =
 542         diagnostics::DiagnosticsController::GetInstance()->RunRecovery(
 543             command_line, &writer);
 544
 545     if (recovery_exit_code) {
 546       // Recovery has failed somehow, so we exit.
 547       *exit_code = recovery_exit_code;
 548       return true;
 549     }
 550   } else {  // Not running diagnostics or recovery.
 551     diagnostics::DiagnosticsController::GetInstance()->RecordRegularStartup();
 552   }
 553 #endif
 554
 555   content::SetContentClient(&chrome_content_client_);
 556
 557   return false;
 558 }
 559
 560 #if defined(OS_MACOSX)
 561 void ChromeMainDelegate::InitMacCrashReporter(
 562     const base::CommandLine& command_line,
 563     const std::string& process_type) {
 564   // TODO(mark): Right now, InitializeCrashpad() needs to be called after
 565   // CommandLine::Init() and chrome::RegisterPathProvider().  Ideally, Crashpad
 566   // initialization could occur sooner, preferably even before the framework
 567   // dylib is even loaded, to catch potential early crashes.
 568   crash_reporter::InitializeCrashpad(process_type);
 569
 570   const bool browser_process = process_type.empty();
 571   if (!browser_process) {
 572     std::string metrics_client_id =
 573         command_line.GetSwitchValueASCII(switches::kMetricsClientID);
 574     crash_keys::SetMetricsClientIdFromGUID(metrics_client_id);
 575   }
 576
 577   // Mac Chrome is packaged with a main app bundle and a helper app bundle.
 578   // The main app bundle should only be used for the browser process, so it
 579   // should never see a --type switch (switches::kProcessType).  Likewise,
 580   // the helper should always have a --type switch.
 581   //
 582   // This check is done this late so there is already a call to
 583   // base::mac::IsBackgroundOnlyProcess(), so there is no change in
 584   // startup/initialization order.
 585
 586   // The helper's Info.plist marks it as a background only app.
 587   if (base::mac::IsBackgroundOnlyProcess()) {
 588     CHECK(command_line.HasSwitch(switches::kProcessType) &&
 589           !process_type.empty())
 590         << "Helper application requires --type.";
 591
 592     // In addition, some helper flavors only work with certain process types.
 593     base::FilePath executable;
 594     if (PathService::Get(base::FILE_EXE, &executable) &&
 595         executable.value().size() >= 3) {
 596       std::string last_three =
 597           executable.value().substr(executable.value().size() - 3);
 598
 599       if (last_three == " EH") {
 600         CHECK(process_type == switches::kPluginProcess ||
 601               process_type == switches::kUtilityProcess)
 602             << "Executable-heap process requires --type="
 603             << switches::kPluginProcess << " or "
 604             << switches::kUtilityProcess << ", saw " << process_type;
 605       } else if (last_three == " NP") {
 606 #if !defined(DISABLE_NACL)
 607         CHECK_EQ(switches::kNaClLoaderProcess, process_type)
 608             << "Non-PIE process requires --type="
 609             << switches::kNaClLoaderProcess << ", saw " << process_type;
 610 #endif
 611       } else {
 612 #if defined(DISABLE_NACL)
 613         CHECK(process_type != switches::kPluginProcess)
 614             << "Non-executable-heap PIE process is intolerant of --type="
 615             << switches::kPluginProcess;
 616 #else
 617         CHECK(process_type != switches::kPluginProcess &&
 618               process_type != switches::kNaClLoaderProcess)
 619             << "Non-executable-heap PIE process is intolerant of --type="
 620             << switches::kPluginProcess << " and "
 621             << switches::kNaClLoaderProcess << ", saw " << process_type;
 622 #endif
 623       }
 624     }
 625   } else {
 626     CHECK(!command_line.HasSwitch(switches::kProcessType) &&
 627           process_type.empty())
 628         << "Main application forbids --type, saw " << process_type;
 629   }
 630 }
 631 #endif  // defined(OS_MACOSX)
 632
 633 void ChromeMainDelegate::PreSandboxStartup() {
 634   const base::CommandLine& command_line =
 635       *base::CommandLine::ForCurrentProcess();
 636   std::string process_type =
 637       command_line.GetSwitchValueASCII(switches::kProcessType);
 638
 639 #if defined(OS_POSIX)
 640   crash_reporter::SetCrashReporterClient(g_chrome_crash_client.Pointer());
 641 #endif
 642
 643 #if defined(OS_MACOSX)
 644   // On the Mac, the child executable lives at a predefined location within
 645   // the app bundle's versioned directory.
 646   PathService::Override(content::CHILD_PROCESS_EXE,
 647                         chrome::GetVersionedDirectory().
 648                         Append(chrome::kHelperProcessExecutablePath));
 649
 650   InitMacCrashReporter(command_line, process_type);
 651 #endif
 652
 653 #if defined(OS_WIN)
 654   child_process_logging::Init();
 655 #endif
 656 #if defined(ARCH_CPU_ARM_FAMILY) && (defined(OS_ANDROID) || defined(OS_LINUX))
 657   // Create an instance of the CPU class to parse /proc/cpuinfo and cache
 658   // cpu_brand info.
 659   base::CPU cpu_info;
 660 #endif
 661
 662   // Initialize the user data dir for any process type that needs it.
 663   if (chrome::ProcessNeedsProfileDir(process_type))
 664     InitializeUserDataDir();
 665
 666   // Register component_updater PathProvider after DIR_USER_DATA overidden by
 667   // command line flags. Maybe move the chrome PathProvider down here also?
 668   component_updater::RegisterPathProvider(chrome::DIR_USER_DATA);
 669
 670   // Enable Message Loop related state asap.
 671   if (command_line.HasSwitch(switches::kMessageLoopHistogrammer))
 672     base::MessageLoop::EnableHistogrammer(true);
 673
 674 #if !defined(OS_ANDROID)
 675   // Android does InitLogging when library is loaded. Skip here.
 676   logging::OldFileDeletionState file_state =
 677       logging::APPEND_TO_OLD_LOG_FILE;
 678   if (process_type.empty()) {
 679     file_state = logging::DELETE_OLD_LOG_FILE;
 680   }
 681   logging::InitChromeLogging(command_line, file_state);
 682 #endif
 683
 684 #if defined(OS_WIN)
 685   // TODO(zturner): Throbber icons are still stored in chrome.dll, this can be
 686   // killed once those are merged into resources.pak.  See
 687   // GlassBrowserFrameView::InitThrobberIcons() and http://crbug.com/368327.
 688   ui::SetResourcesDataDLL(_AtlBaseModule.GetResourceInstance());
 689 #endif
 690
 691   if (SubprocessNeedsResourceBundle(process_type)) {
 692     // Initialize ResourceBundle which handles files loaded from external
 693     // sources.  The language should have been passed in to us from the
 694     // browser process as a command line flag.
 695 #if defined(DISABLE_NACL)
 696     DCHECK(command_line.HasSwitch(switches::kLang) ||
 697            process_type == switches::kZygoteProcess ||
 698            process_type == switches::kGpuProcess ||
 699            process_type == switches::kPpapiBrokerProcess ||
 700            process_type == switches::kPpapiPluginProcess);
 701 #else
 702     DCHECK(command_line.HasSwitch(switches::kLang) ||
 703            process_type == switches::kZygoteProcess ||
 704            process_type == switches::kGpuProcess ||
 705            process_type == switches::kNaClLoaderProcess ||
 706            process_type == switches::kPpapiBrokerProcess ||
 707            process_type == switches::kPpapiPluginProcess);
 708 #endif
 709
 710     // TODO(markusheintz): The command line flag --lang is actually processed
 711     // by the CommandLinePrefStore, and made available through the PrefService
 712     // via the preference prefs::kApplicationLocale. The browser process uses
 713     // the --lang flag to pass the value of the PrefService in here. Maybe
 714     // this value could be passed in a different way.
 715     const std::string locale =
 716         command_line.GetSwitchValueASCII(switches::kLang);
 717 #if defined(OS_ANDROID)
 718     // The renderer sandbox prevents us from accessing our .pak files directly.
 719     // Therefore file descriptors to the .pak files that we need are passed in
 720     // at process creation time.
 721     int locale_pak_fd = base::GlobalDescriptors::GetInstance()->MaybeGet(
 722         kAndroidLocalePakDescriptor);
 723     CHECK(locale_pak_fd != -1);
 724     ResourceBundle::InitSharedInstanceWithPakFileRegion(
 725         base::File(locale_pak_fd), base::MemoryMappedFile::Region::kWholeFile);
 726
 727     int extra_pak_keys[] = {
 728       kAndroidChrome100PercentPakDescriptor,
 729       kAndroidUIResourcesPakDescriptor,
 730     };
 731     for (size_t i = 0; i < arraysize(extra_pak_keys); ++i) {
 732       int pak_fd =
 733           base::GlobalDescriptors::GetInstance()->MaybeGet(extra_pak_keys[i]);
 734       CHECK(pak_fd != -1);
 735       ResourceBundle::GetSharedInstance().AddDataPackFromFile(
 736           base::File(pak_fd), ui::SCALE_FACTOR_100P);
 737     }
 738
 739     base::i18n::SetICUDefaultLocale(locale);
 740     const std::string loaded_locale = locale;
 741 #else
 742     const std::string loaded_locale =
 743         ui::ResourceBundle::InitSharedInstanceWithLocale(
 744             locale, NULL, ui::ResourceBundle::LOAD_COMMON_RESOURCES);
 745
 746     base::FilePath resources_pack_path;
 747     PathService::Get(chrome::FILE_RESOURCES_PACK, &resources_pack_path);
 748     ResourceBundle::GetSharedInstance().AddDataPackFromPath(
 749         resources_pack_path, ui::SCALE_FACTOR_NONE);
 750 #endif
 751     CHECK(!loaded_locale.empty()) << "Locale could not be found for " <<
 752         locale;
 753   }
 754
 755 #if !defined(CHROME_MULTIPLE_DLL_BROWSER)
 756   if (process_type == switches::kUtilityProcess ||
 757       process_type == switches::kZygoteProcess) {
 758     ChromeContentUtilityClient::PreSandboxStartup();
 759   }
 760
 761   chrome::InitializePDF();
 762 #endif
 763
 764 #if defined(OS_POSIX) && !defined(OS_MACOSX)
 765   // Zygote needs to call InitCrashReporter() in RunZygote().
 766   if (process_type != switches::kZygoteProcess) {
 767 #if defined(OS_ANDROID)
 768     if (process_type.empty())
 769       breakpad::InitCrashReporter(process_type);
 770     else
 771       breakpad::InitNonBrowserCrashReporterForAndroid(process_type);
 772 #else  // !defined(OS_ANDROID)
 773     breakpad::InitCrashReporter(process_type);
 774 #endif  // defined(OS_ANDROID)
 775   }
 776 #endif  // defined(OS_POSIX) && !defined(OS_MACOSX)
 777
 778   // After all the platform Breakpads have been initialized, store the command
 779   // line for crash reporting.
 780   crash_keys::SetSwitchesFromCommandLine(&command_line);
 781 }
 782
 783 void ChromeMainDelegate::SandboxInitialized(const std::string& process_type) {
 784   // Note: If you are adding a new process type below, be sure to adjust the
 785   // AdjustLinuxOOMScore function too.
 786 #if defined(OS_LINUX)
 787   AdjustLinuxOOMScore(process_type);
 788 #endif
 789 #if defined(OS_WIN)
 790   SuppressWindowsErrorDialogs();
 791 #endif
 792
 793 #if defined(CHROME_MULTIPLE_DLL_CHILD) || !defined(CHROME_MULTIPLE_DLL_BROWSER)
 794 #if defined(ENABLE_REMOTING)
 795   ChromeContentClient::SetRemotingEntryFunctions(
 796       remoting::PPP_GetInterface,
 797       remoting::PPP_InitializeModule,
 798       remoting::PPP_ShutdownModule);
 799 #endif
 800 #if !defined(DISABLE_NACL)
 801   ChromeContentClient::SetNaClEntryFunctions(
 802       nacl_plugin::PPP_GetInterface,
 803       nacl_plugin::PPP_InitializeModule,
 804       nacl_plugin::PPP_ShutdownModule);
 805 #endif
 806 #if defined(ENABLE_PLUGINS)
 807   ChromeContentClient::SetPDFEntryFunctions(
 808       chrome_pdf::PPP_GetInterface,
 809       chrome_pdf::PPP_InitializeModule,
 810       chrome_pdf::PPP_ShutdownModule);
 811 #endif
 812 #endif
 813 }
 814
 815 int ChromeMainDelegate::RunProcess(
 816     const std::string& process_type,
 817     const content::MainFunctionParams& main_function_params) {
 818   // ANDROID doesn't support "service", so no ServiceProcessMain, and arraysize
 819   // doesn't support empty array. So we comment out the block for Android.
 820 #if !defined(OS_ANDROID)
 821   static const MainFunction kMainFunctions[] = {
 822 #if defined(ENABLE_PRINT_PREVIEW) && !defined(CHROME_MULTIPLE_DLL_CHILD)
 823     { switches::kServiceProcess,     ServiceProcessMain },
 824 #endif
 825
 826 #if defined(OS_MACOSX)
 827     { switches::kRelauncherProcess,
 828       mac_relauncher::internal::RelauncherMain },
 829 #endif
 830
 831     // This entry is not needed on Linux, where the NaCl loader
 832     // process is launched via nacl_helper instead.
 833 #if !defined(DISABLE_NACL) && !defined(CHROME_MULTIPLE_DLL_BROWSER) && \
 834     !defined(OS_LINUX)
 835     { switches::kNaClLoaderProcess,  NaClMain },
 836 #else
 837     { "<invalid>", NULL },  // To avoid constant array of size 0
 838                             // when DISABLE_NACL and CHROME_MULTIPLE_DLL_CHILD
 839 #endif  // DISABLE_NACL
 840   };
 841
 842   for (size_t i = 0; i < arraysize(kMainFunctions); ++i) {
 843     if (process_type == kMainFunctions[i].name)
 844       return kMainFunctions[i].function(main_function_params);
 845   }
 846 #endif
 847
 848   return -1;
 849 }
 850
 851 void ChromeMainDelegate::ProcessExiting(const std::string& process_type) {
 852   if (SubprocessNeedsResourceBundle(process_type))
 853     ResourceBundle::CleanupSharedInstance();
 854 #if !defined(OS_ANDROID)
 855   logging::CleanupChromeLogging();
 856 #else
 857   // Android doesn't use InitChromeLogging, so we close the log file manually.
 858   logging::CloseLogFile();
 859 #endif  // !defined(OS_ANDROID)
 860
 861 #if defined(OS_WIN)
 862   RemoveCloseHandleHooks();
 863 #endif
 864 }
 865
 866 #if defined(OS_MACOSX)
 867 bool ChromeMainDelegate::ProcessRegistersWithSystemProcess(
 868     const std::string& process_type) {
 869 #if defined(DISABLE_NACL)
 870   return false;
 871 #else
 872   return process_type == switches::kNaClLoaderProcess;
 873 #endif
 874 }
 875
 876 bool ChromeMainDelegate::ShouldSendMachPort(const std::string& process_type) {
 877   return process_type != switches::kRelauncherProcess &&
 878       process_type != switches::kServiceProcess;
 879 }
 880
 881 bool ChromeMainDelegate::DelaySandboxInitialization(
 882     const std::string& process_type) {
 883 #if !defined(DISABLE_NACL)
 884   // NaClLoader does this in NaClMainPlatformDelegate::EnableSandbox().
 885   // No sandbox needed for relauncher.
 886   if (process_type == switches::kNaClLoaderProcess)
 887     return true;
 888 #endif
 889   return process_type == switches::kRelauncherProcess;
 890 }
 891 #elif defined(OS_POSIX) && !defined(OS_ANDROID)
 892 void ChromeMainDelegate::ZygoteStarting(
 893     ScopedVector<content::ZygoteForkDelegate>* delegates) {
 894 #if !defined(DISABLE_NACL)
 895   nacl::AddNaClZygoteForkDelegates(delegates);
 896 #endif
 897 }
 898
 899 void ChromeMainDelegate::ZygoteForked() {
 900   Profiling::ProcessStarted();
 901   if (Profiling::BeingProfiled()) {
 902     base::debug::RestartProfilingAfterFork();
 903     SetUpProfilingShutdownHandler();
 904   }
 905
 906   // Needs to be called after we have chrome::DIR_USER_DATA.  BrowserMain sets
 907   // this up for the browser process in a different manner.
 908   const base::CommandLine* command_line =
 909       base::CommandLine::ForCurrentProcess();
 910   std::string process_type =
 911       command_line->GetSwitchValueASCII(switches::kProcessType);
 912   breakpad::InitCrashReporter(process_type);
 913
 914   // Reset the command line for the newly spawned process.
 915   crash_keys::SetSwitchesFromCommandLine(command_line);
 916 }
 917
 918 #endif  // OS_MACOSX
 919
 920 content::ContentBrowserClient*
 921 ChromeMainDelegate::CreateContentBrowserClient() {
 922 #if defined(CHROME_MULTIPLE_DLL_CHILD)
 923   return NULL;
 924 #else
 925   return g_chrome_content_browser_client.Pointer();
 926 #endif
 927 }
 928
 929 content::ContentPluginClient* ChromeMainDelegate::CreateContentPluginClient() {
 930 #if defined(CHROME_MULTIPLE_DLL_BROWSER)
 931   return NULL;
 932 #else
 933   return g_chrome_content_plugin_client.Pointer();
 934 #endif
 935 }
 936
 937 content::ContentRendererClient*
 938 ChromeMainDelegate::CreateContentRendererClient() {
 939 #if defined(CHROME_MULTIPLE_DLL_BROWSER)
 940   return NULL;
 941 #else
 942   return g_chrome_content_renderer_client.Pointer();
 943 #endif
 944 }
 945
 946 content::ContentUtilityClient*
 947 ChromeMainDelegate::CreateContentUtilityClient() {
 948 #if defined(CHROME_MULTIPLE_DLL_BROWSER)
 949   return NULL;
 950 #else
 951   return g_chrome_content_utility_client.Pointer();
 952 #endif
 953 }
 954
 955 bool ChromeMainDelegate::ShouldEnableProfilerRecording() {
 956   switch (chrome::VersionInfo::GetChannel()) {
 957     case chrome::VersionInfo::CHANNEL_UNKNOWN:
 958     case chrome::VersionInfo::CHANNEL_CANARY:
 959       return true;
 960     case chrome::VersionInfo::CHANNEL_DEV:
 961     case chrome::VersionInfo::CHANNEL_BETA:
 962     case chrome::VersionInfo::CHANNEL_STABLE:
 963     default:
 964       // Don't enable instrumentation.
 965       return false;
 966   }
 967 }