chrome_main_delegate.cc revision 010d83a9304c5a91596085d917d248abff47903a 
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/command_line.h"
8#include "base/cpu.h"
9#include "base/files/file_path.h"
10#include "base/i18n/rtl.h"
11#include "base/lazy_instance.h"
12#include "base/message_loop/message_loop.h"
13#include "base/metrics/statistics_recorder.h"
14#include "base/metrics/stats_counters.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/nacl/common/nacl_switches.h"
37#include "components/startup_metric_utils/startup_metric_utils.h"
38#include "content/public/common/content_client.h"
39#include "content/public/common/content_paths.h"
40#include "ui/base/ui_base_switches.h"
41
42#if defined(OS_WIN)
43#include <atlbase.h>
44#include <malloc.h>
45#include <algorithm>
46#include "base/strings/string_util.h"
47#include "chrome/common/child_process_logging.h"
48#include "sandbox/win/src/sandbox.h"
49#include "tools/memory_watcher/memory_watcher.h"
50#include "ui/base/resource/resource_bundle_win.h"
51#endif
52
53#if defined(OS_MACOSX)
54#include "base/mac/mac_util.h"
55#include "base/mac/os_crash_dumps.h"
56#include "chrome/app/chrome_main_mac.h"
57#include "chrome/browser/mac/relauncher.h"
58#include "chrome/common/chrome_paths_internal.h"
59#include "chrome/common/mac/cfbundle_blocker.h"
60#include "chrome/common/mac/objc_zombie.h"
61#include "components/breakpad/app/breakpad_mac.h"
62#include "grit/chromium_strings.h"
63#include "ui/base/l10n/l10n_util_mac.h"
64#endif
65
66#if defined(OS_POSIX)
67#include <locale.h>
68#include <signal.h>
69#include "chrome/app/chrome_breakpad_client.h"
70#include "components/breakpad/app/breakpad_client.h"
71#endif
72
73#if !defined(DISABLE_NACL) && defined(OS_LINUX)
74#include "components/nacl/common/nacl_paths.h"
75#include "components/nacl/zygote/nacl_fork_delegate_linux.h"
76#endif
77
78#if defined(OS_CHROMEOS)
79#include "base/sys_info.h"
80#include "chrome/browser/chromeos/boot_times_loader.h"
81#include "chromeos/chromeos_paths.h"
82#include "chromeos/chromeos_switches.h"
83#endif
84
85#if defined(OS_ANDROID)
86#include "chrome/common/descriptors_android.h"
87#else
88// Diagnostics is only available on non-android platforms.
89#include "chrome/browser/diagnostics/diagnostics_controller.h"
90#include "chrome/browser/diagnostics/diagnostics_writer.h"
91#endif
92
93#if defined(USE_X11)
94#include <stdlib.h>
95#include <string.h>
96#include "ui/base/x/x11_util.h"
97#endif
98
99#if defined(OS_POSIX) && !defined(OS_MACOSX)
100#include "components/breakpad/app/breakpad_linux.h"
101#endif
102
103#if defined(OS_LINUX)
104#include "base/environment.h"
105#endif
106
107#if defined(OS_MACOSX) || defined(OS_WIN)
108#include "chrome/browser/policy/policy_path_parser.h"
109#endif
110
111#if !defined(CHROME_MULTIPLE_DLL_CHILD)
112base::LazyInstance<chrome::ChromeContentBrowserClient>
113    g_chrome_content_browser_client = LAZY_INSTANCE_INITIALIZER;
114#endif
115
116#if !defined(CHROME_MULTIPLE_DLL_BROWSER)
117base::LazyInstance<ChromeContentRendererClient>
118    g_chrome_content_renderer_client = LAZY_INSTANCE_INITIALIZER;
119base::LazyInstance<chrome::ChromeContentUtilityClient>
120    g_chrome_content_utility_client = LAZY_INSTANCE_INITIALIZER;
121base::LazyInstance<chrome::ChromeContentPluginClient>
122    g_chrome_content_plugin_client = LAZY_INSTANCE_INITIALIZER;
123#endif
124
125#if defined(OS_POSIX)
126base::LazyInstance<chrome::ChromeBreakpadClient>::Leaky
127    g_chrome_breakpad_client = LAZY_INSTANCE_INITIALIZER;
128#endif
129
130extern int NaClMain(const content::MainFunctionParams&);
131extern int ServiceProcessMain(const content::MainFunctionParams&);
132
133namespace {
134
135#if defined(OS_WIN)
136const wchar_t kProfilingDll[] = L"memory_watcher.dll";
137
138// Load the memory profiling DLL.  All it needs to be activated
139// is to be loaded.  Return true on success, false otherwise.
140bool LoadMemoryProfiler() {
141  HMODULE prof_module = LoadLibrary(kProfilingDll);
142  return prof_module != NULL;
143}
144
145// Early versions of Chrome incorrectly registered a chromehtml: URL handler,
146// which gives us nothing but trouble. Avoid launching chrome this way since
147// some apps fail to properly escape arguments.
148bool HasDeprecatedArguments(const std::wstring& command_line) {
149  const wchar_t kChromeHtml[] = L"chromehtml:";
150  std::wstring command_line_lower = command_line;
151  // We are only searching for ASCII characters so this is OK.
152  StringToLowerASCII(&command_line_lower);
153  std::wstring::size_type pos = command_line_lower.find(kChromeHtml);
154  return (pos != std::wstring::npos);
155}
156
157// If we try to access a path that is not currently available, we want the call
158// to fail rather than show an error dialog.
159void SuppressWindowsErrorDialogs() {
160  UINT new_flags = SEM_FAILCRITICALERRORS |
161                   SEM_NOOPENFILEERRORBOX;
162
163  // Preserve existing error mode.
164  UINT existing_flags = SetErrorMode(new_flags);
165  SetErrorMode(existing_flags | new_flags);
166}
167
168#endif  // defined(OS_WIN)
169
170#if defined(OS_LINUX)
171static void AdjustLinuxOOMScore(const std::string& process_type) {
172  // Browsers and zygotes should still be killable, but killed last.
173  const int kZygoteScore = 0;
174  // The minimum amount to bump a score by.  This is large enough that
175  // even if it's translated into the old values, it will still go up
176  // by at least one.
177  const int kScoreBump = 100;
178  // This is the lowest score that renderers and extensions start with
179  // in the OomPriorityManager.
180  const int kRendererScore = chrome::kLowestRendererOomScore;
181  // For "miscellaneous" things, we want them after renderers,
182  // but before plugins.
183  const int kMiscScore = kRendererScore - kScoreBump;
184  // We want plugins to die after the renderers.
185  const int kPluginScore = kMiscScore - kScoreBump;
186  int score = -1;
187
188  DCHECK(kMiscScore > 0);
189  DCHECK(kPluginScore > 0);
190
191  if (process_type == switches::kPluginProcess ||
192      process_type == switches::kPpapiPluginProcess) {
193    score = kPluginScore;
194  } else if (process_type == switches::kPpapiBrokerProcess) {
195    // The broker should be killed before the PPAPI plugin.
196    score = kPluginScore + kScoreBump;
197  } else if (process_type == switches::kUtilityProcess ||
198             process_type == switches::kWorkerProcess ||
199             process_type == switches::kGpuProcess ||
200             process_type == switches::kServiceProcess) {
201    score = kMiscScore;
202#ifndef DISABLE_NACL
203  } else if (process_type == switches::kNaClLoaderProcess ||
204             process_type == switches::kNaClLoaderNonSfiProcess) {
205    score = kPluginScore;
206#endif
207  } else if (process_type == switches::kZygoteProcess ||
208             process_type.empty()) {
209    // For zygotes and unlabeled process types, we want to still make
210    // them killable by the OOM killer.
211    score = kZygoteScore;
212  } else if (process_type == switches::kRendererProcess) {
213    LOG(WARNING) << "process type 'renderer' "
214                 << "should be created through the zygote.";
215    // When debugging, this process type can end up being run directly, but
216    // this isn't the typical path for assigning the OOM score for it.  Still,
217    // we want to assign a score that is somewhat representative for debugging.
218    score = kRendererScore;
219  } else {
220    NOTREACHED() << "Unknown process type";
221  }
222  if (score > -1)
223    base::AdjustOOMScore(base::GetCurrentProcId(), score);
224}
225#endif  // defined(OS_LINUX)
226
227// Enable the heap profiler if the appropriate command-line switch is
228// present, bailing out of the app we can't.
229void EnableHeapProfiler(const CommandLine& command_line) {
230#if defined(OS_WIN)
231  if (command_line.HasSwitch(switches::kMemoryProfiling))
232    if (!LoadMemoryProfiler())
233      exit(-1);
234#endif
235}
236
237// Returns true if this subprocess type needs the ResourceBundle initialized
238// and resources loaded.
239bool SubprocessNeedsResourceBundle(const std::string& process_type) {
240  return
241#if defined(OS_WIN) || defined(OS_MACOSX)
242      // Windows needs resources for the default/null plugin.
243      // Mac needs them for the plugin process name.
244      process_type == switches::kPluginProcess ||
245      // Needed for scrollbar related images.
246      process_type == switches::kWorkerProcess ||
247#endif
248#if defined(OS_POSIX) && !defined(OS_MACOSX)
249      // The zygote process opens the resources for the renderers.
250      process_type == switches::kZygoteProcess ||
251#endif
252#if defined(OS_MACOSX)
253      // Mac needs them too for scrollbar related images and for sandbox
254      // profiles.
255      process_type == switches::kNaClLoaderProcess ||
256      process_type == switches::kPpapiPluginProcess ||
257      process_type == switches::kPpapiBrokerProcess ||
258      process_type == switches::kGpuProcess ||
259#endif
260      process_type == switches::kRendererProcess ||
261      process_type == switches::kUtilityProcess;
262}
263
264#if defined(OS_POSIX)
265// Check for --version and --product-version; return true if we encountered
266// one of these switches and should exit now.
267bool HandleVersionSwitches(const CommandLine& command_line) {
268  const chrome::VersionInfo version_info;
269
270#if !defined(OS_MACOSX)
271  if (command_line.HasSwitch(switches::kProductVersion)) {
272    printf("%s\n", version_info.Version().c_str());
273    return true;
274  }
275#endif
276
277  if (command_line.HasSwitch(switches::kVersion)) {
278    printf("%s %s %s\n",
279           version_info.Name().c_str(),
280           version_info.Version().c_str(),
281           chrome::VersionInfo::GetVersionStringModifier().c_str());
282    return true;
283  }
284
285  return false;
286}
287
288#if !defined(OS_MACOSX) && !defined(OS_CHROMEOS)
289// Show the man page if --help or -h is on the command line.
290void HandleHelpSwitches(const CommandLine& command_line) {
291  if (command_line.HasSwitch(switches::kHelp) ||
292      command_line.HasSwitch(switches::kHelpShort)) {
293    base::FilePath binary(command_line.argv()[0]);
294    execlp("man", "man", binary.BaseName().value().c_str(), NULL);
295    PLOG(FATAL) << "execlp failed";
296  }
297}
298#endif
299
300#if !defined(OS_MACOSX) && !defined(OS_ANDROID)
301void SIGTERMProfilingShutdown(int signal) {
302  Profiling::Stop();
303  struct sigaction sigact;
304  memset(&sigact, 0, sizeof(sigact));
305  sigact.sa_handler = SIG_DFL;
306  CHECK(sigaction(SIGTERM, &sigact, NULL) == 0);
307  raise(signal);
308}
309
310void SetUpProfilingShutdownHandler() {
311  struct sigaction sigact;
312  sigact.sa_handler = SIGTERMProfilingShutdown;
313  sigact.sa_flags = SA_RESETHAND;
314  sigemptyset(&sigact.sa_mask);
315  CHECK(sigaction(SIGTERM, &sigact, NULL) == 0);
316}
317#endif  // !defined(OS_MACOSX) && !defined(OS_ANDROID)
318
319#endif  // OS_POSIX
320
321struct MainFunction {
322  const char* name;
323  int (*function)(const content::MainFunctionParams&);
324};
325
326// Initializes the user data dir. Must be called before InitializeLocalState().
327void InitializeUserDataDir() {
328  CommandLine* command_line = CommandLine::ForCurrentProcess();
329  base::FilePath user_data_dir =
330      command_line->GetSwitchValuePath(switches::kUserDataDir);
331  std::string process_type =
332      command_line->GetSwitchValueASCII(switches::kProcessType);
333
334#if defined(OS_LINUX)
335  // On Linux, Chrome does not support running multiple copies under different
336  // DISPLAYs, so the profile directory can be specified in the environment to
337  // support the virtual desktop use-case.
338  if (user_data_dir.empty()) {
339    std::string user_data_dir_string;
340    scoped_ptr<base::Environment> environment(base::Environment::Create());
341    if (environment->GetVar("CHROME_USER_DATA_DIR", &user_data_dir_string) &&
342        base::IsStringUTF8(user_data_dir_string)) {
343      user_data_dir = base::FilePath::FromUTF8Unsafe(user_data_dir_string);
344    }
345  }
346#endif
347#if defined(OS_MACOSX) || defined(OS_WIN)
348  policy::path_parser::CheckUserDataDirPolicy(&user_data_dir);
349#endif
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
386ChromeMainDelegate::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
398ChromeMainDelegate::~ChromeMainDelegate() {
399}
400
401bool ChromeMainDelegate::BasicStartupComplete(int* exit_code) {
402#if defined(OS_CHROMEOS)
403  chromeos::BootTimesLoader::Get()->SaveChromeMainStats();
404#endif
405
406  const CommandLine& command_line = *CommandLine::ForCurrentProcess();
407
408#if defined(OS_MACOSX)
409  // Give the browser process a longer treadmill, since crashes
410  // there have more impact.
411  const bool is_browser = !command_line.HasSwitch(switches::kProcessType);
412  ObjcEvilDoers::ZombieEnable(true, is_browser ? 10000 : 1000);
413
414  SetUpBundleOverrides();
415  chrome::common::mac::EnableCFBundleBlocker();
416#endif
417
418  Profiling::ProcessStarted();
419
420#if defined(OS_POSIX)
421  if (HandleVersionSwitches(command_line)) {
422    *exit_code = 0;
423    return true;  // Got a --version switch; exit with a success error code.
424  }
425#if !defined(OS_MACOSX) && !defined(OS_CHROMEOS)
426  // This will directly exit if the user asked for help.
427  HandleHelpSwitches(command_line);
428#endif
429#endif  // OS_POSIX
430
431#if defined(OS_WIN)
432  // Must do this before any other usage of command line!
433  if (HasDeprecatedArguments(command_line.GetCommandLineString())) {
434    *exit_code = 1;
435    return true;
436  }
437#endif
438
439  chrome::RegisterPathProvider();
440#if defined(OS_CHROMEOS)
441  chromeos::RegisterPathProvider();
442#endif
443#if !defined(DISABLE_NACL) && defined(OS_LINUX)
444  nacl::RegisterPathProvider();
445#endif
446
447// No support for ANDROID yet as DiagnosticsController needs wchar support.
448// TODO(gspencer): That's not true anymore, or at least there are no w-string
449// references anymore. Not sure if that means this can be enabled on Android or
450// not though.  As there is no easily accessible command line on Android, I'm
451// not sure this is a big deal.
452#if !defined(OS_ANDROID) && !defined(CHROME_MULTIPLE_DLL_CHILD)
453  // If we are in diagnostics mode this is the end of the line: after the
454  // diagnostics are run the process will invariably exit.
455  if (command_line.HasSwitch(switches::kDiagnostics)) {
456    diagnostics::DiagnosticsWriter::FormatType format =
457        diagnostics::DiagnosticsWriter::HUMAN;
458    if (command_line.HasSwitch(switches::kDiagnosticsFormat)) {
459      std::string format_str =
460          command_line.GetSwitchValueASCII(switches::kDiagnosticsFormat);
461      if (format_str == "machine") {
462        format = diagnostics::DiagnosticsWriter::MACHINE;
463      } else if (format_str == "log") {
464        format = diagnostics::DiagnosticsWriter::LOG;
465      } else {
466        DCHECK_EQ("human", format_str);
467      }
468    }
469
470    diagnostics::DiagnosticsWriter writer(format);
471    *exit_code = diagnostics::DiagnosticsController::GetInstance()->Run(
472        command_line, &writer);
473    diagnostics::DiagnosticsController::GetInstance()->ClearResults();
474    return true;
475  }
476#endif
477
478#if defined(OS_CHROMEOS)
479  // If we are recovering from a crash on ChromeOS, then we will do some
480  // recovery using the diagnostics module, and then continue on. We fake up a
481  // command line to tell it that we want it to recover, and to preserve the
482  // original command line.
483  if (command_line.HasSwitch(chromeos::switches::kLoginUser) ||
484      command_line.HasSwitch(switches::kDiagnosticsRecovery)) {
485
486    // The statistics subsystem needs get initialized soon enough for the
487    // statistics to be collected.  It's safe to call this more than once.
488    base::StatisticsRecorder::Initialize();
489
490    CommandLine interim_command_line(command_line.GetProgram());
491    const char* kSwitchNames[] = {switches::kUserDataDir, };
492    interim_command_line.CopySwitchesFrom(
493        command_line, kSwitchNames, arraysize(kSwitchNames));
494    interim_command_line.AppendSwitch(switches::kDiagnostics);
495    interim_command_line.AppendSwitch(switches::kDiagnosticsRecovery);
496
497    diagnostics::DiagnosticsWriter::FormatType format =
498        diagnostics::DiagnosticsWriter::LOG;
499    if (command_line.HasSwitch(switches::kDiagnosticsFormat)) {
500      std::string format_str =
501          command_line.GetSwitchValueASCII(switches::kDiagnosticsFormat);
502      if (format_str == "machine") {
503        format = diagnostics::DiagnosticsWriter::MACHINE;
504      } else if (format_str == "human") {
505        format = diagnostics::DiagnosticsWriter::HUMAN;
506      } else {
507        DCHECK_EQ("log", format_str);
508      }
509    }
510
511    diagnostics::DiagnosticsWriter writer(format);
512    int diagnostics_exit_code =
513        diagnostics::DiagnosticsController::GetInstance()->Run(command_line,
514                                                               &writer);
515    if (diagnostics_exit_code) {
516      // Diagnostics has failed somehow, so we exit.
517      *exit_code = diagnostics_exit_code;
518      return true;
519    }
520
521    // Now we run the actual recovery tasks.
522    int recovery_exit_code =
523        diagnostics::DiagnosticsController::GetInstance()->RunRecovery(
524            command_line, &writer);
525
526    if (recovery_exit_code) {
527      // Recovery has failed somehow, so we exit.
528      *exit_code = recovery_exit_code;
529      return true;
530    }
531  } else {  // Not running diagnostics or recovery.
532    diagnostics::DiagnosticsController::GetInstance()->RecordRegularStartup();
533  }
534#endif
535
536  content::SetContentClient(&chrome_content_client_);
537
538  return false;
539}
540
541#if defined(OS_MACOSX)
542void ChromeMainDelegate::InitMacCrashReporter(
543    const base::CommandLine& command_line,
544    const std::string& process_type) {
545  // TODO(mark): Right now, InitCrashReporter() needs to be called after
546  // CommandLine::Init() and chrome::RegisterPathProvider().  Ideally,
547  // Breakpad initialization could occur sooner, preferably even before the
548  // framework dylib is even loaded, to catch potential early crashes.
549  breakpad::InitCrashReporter(process_type);
550
551#if defined(NDEBUG)
552  bool is_debug_build = false;
553#else
554  bool is_debug_build = true;
555#endif
556
557  // Details on when we enable Apple's Crash reporter.
558  //
559  // Motivation:
560  //    In debug mode it takes Apple's crash reporter eons to generate a crash
561  // dump.
562  //
563  // What we do:
564  // * We only pass crashes for foreground processes to Apple's Crash
565  //    reporter. At the time of this writing, that means just the Browser
566  //    process.
567  // * If Breakpad is enabled, it will pass browser crashes to Crash Reporter
568  //    itself.
569  // * If Breakpad is disabled, we only turn on Crash Reporter for the
570  //    Browser process in release mode.
571  if (!command_line.HasSwitch(switches::kDisableBreakpad)) {
572    bool disable_apple_crash_reporter = is_debug_build ||
573        base::mac::IsBackgroundOnlyProcess();
574    if (!breakpad::IsCrashReporterEnabled() && disable_apple_crash_reporter) {
575      base::mac::DisableOSCrashDumps();
576    }
577  }
578
579  // Mac Chrome is packaged with a main app bundle and a helper app bundle.
580  // The main app bundle should only be used for the browser process, so it
581  // should never see a --type switch (switches::kProcessType).  Likewise,
582  // the helper should always have a --type switch.
583  //
584  // This check is done this late so there is already a call to
585  // base::mac::IsBackgroundOnlyProcess(), so there is no change in
586  // startup/initialization order.
587
588  // The helper's Info.plist marks it as a background only app.
589  if (base::mac::IsBackgroundOnlyProcess()) {
590    CHECK(command_line.HasSwitch(switches::kProcessType) &&
591          !process_type.empty())
592        << "Helper application requires --type.";
593
594    // In addition, some helper flavors only work with certain process types.
595    base::FilePath executable;
596    if (PathService::Get(base::FILE_EXE, &executable) &&
597        executable.value().size() >= 3) {
598      std::string last_three =
599          executable.value().substr(executable.value().size() - 3);
600
601      if (last_three == " EH") {
602        CHECK(process_type == switches::kPluginProcess ||
603              process_type == switches::kUtilityProcess)
604            << "Executable-heap process requires --type="
605            << switches::kPluginProcess << " or "
606            << switches::kUtilityProcess << ", saw " << process_type;
607      } else if (last_three == " NP") {
608        CHECK_EQ(switches::kNaClLoaderProcess, process_type)
609            << "Non-PIE process requires --type="
610            << switches::kNaClLoaderProcess << ", saw " << process_type;
611      } else {
612        CHECK(process_type != switches::kPluginProcess &&
613              process_type != switches::kNaClLoaderProcess)
614            << "Non-executable-heap PIE process is intolerant of --type="
615            << switches::kPluginProcess << " and "
616            << switches::kNaClLoaderProcess << ", saw " << process_type;
617      }
618    }
619  } else {
620    CHECK(!command_line.HasSwitch(switches::kProcessType) &&
621          process_type.empty())
622        << "Main application forbids --type, saw " << process_type;
623  }
624
625  if (breakpad::IsCrashReporterEnabled())
626    breakpad::InitCrashProcessInfo(process_type);
627}
628#endif  // defined(OS_MACOSX)
629
630void ChromeMainDelegate::PreSandboxStartup() {
631  const CommandLine& command_line = *CommandLine::ForCurrentProcess();
632  std::string process_type =
633      command_line.GetSwitchValueASCII(switches::kProcessType);
634
635#if defined(OS_POSIX)
636  breakpad::SetBreakpadClient(g_chrome_breakpad_client.Pointer());
637#endif
638
639#if defined(OS_MACOSX)
640  // On the Mac, the child executable lives at a predefined location within
641  // the app bundle's versioned directory.
642  PathService::Override(content::CHILD_PROCESS_EXE,
643                        chrome::GetVersionedDirectory().
644                        Append(chrome::kHelperProcessExecutablePath));
645
646  InitMacCrashReporter(command_line, process_type);
647#endif
648
649#if defined(OS_WIN)
650  child_process_logging::Init();
651#endif
652#if defined(ARCH_CPU_ARM_FAMILY) && (defined(OS_ANDROID) || defined(OS_LINUX))
653  // Create an instance of the CPU class to parse /proc/cpuinfo and cache
654  // cpu_brand info.
655  base::CPU cpu_info;
656#endif
657
658  // Initialize the user data dir for any process type that needs it.
659  if (chrome::ProcessNeedsProfileDir(process_type))
660    InitializeUserDataDir();
661
662  stats_counter_timer_.reset(new base::StatsCounterTimer("Chrome.Init"));
663  startup_timer_.reset(new base::StatsScope<base::StatsCounterTimer>
664                       (*stats_counter_timer_));
665
666  // Enable the heap profiler as early as possible!
667  EnableHeapProfiler(command_line);
668
669  // Enable Message Loop related state asap.
670  if (command_line.HasSwitch(switches::kMessageLoopHistogrammer))
671    base::MessageLoop::EnableHistogrammer(true);
672
673#if !defined(OS_ANDROID)
674  // Android does InitLogging when library is loaded. Skip here.
675  logging::OldFileDeletionState file_state =
676      logging::APPEND_TO_OLD_LOG_FILE;
677  if (process_type.empty()) {
678    file_state = logging::DELETE_OLD_LOG_FILE;
679  }
680  logging::InitChromeLogging(command_line, file_state);
681#endif
682
683#if defined(OS_WIN)
684  // TODO(zturner): Throbber icons are still stored in chrome.dll, this can be
685  // killed once those are merged into resources.pak.  See
686  // GlassBrowserFrameView::InitThrobberIcons() and http://crbug.com/368327.
687  ui::SetResourcesDataDLL(_AtlBaseModule.GetResourceInstance());
688#endif
689
690  if (SubprocessNeedsResourceBundle(process_type)) {
691    // Initialize ResourceBundle which handles files loaded from external
692    // sources.  The language should have been passed in to us from the
693    // browser process as a command line flag.
694#if defined(DISABLE_NACL)
695    DCHECK(command_line.HasSwitch(switches::kLang) ||
696           process_type == switches::kZygoteProcess ||
697           process_type == switches::kGpuProcess ||
698           process_type == switches::kPpapiBrokerProcess ||
699           process_type == switches::kPpapiPluginProcess);
700#else
701    DCHECK(command_line.HasSwitch(switches::kLang) ||
702           process_type == switches::kZygoteProcess ||
703           process_type == switches::kGpuProcess ||
704           process_type == switches::kNaClLoaderProcess ||
705           process_type == switches::kPpapiBrokerProcess ||
706           process_type == switches::kPpapiPluginProcess);
707#endif
708
709    // TODO(markusheintz): The command line flag --lang is actually processed
710    // by the CommandLinePrefStore, and made available through the PrefService
711    // via the preference prefs::kApplicationLocale. The browser process uses
712    // the --lang flag to pass the value of the PrefService in here. Maybe
713    // this value could be passed in a different way.
714    const std::string locale =
715        command_line.GetSwitchValueASCII(switches::kLang);
716#if defined(OS_ANDROID)
717    // The renderer sandbox prevents us from accessing our .pak files directly.
718    // Therefore file descriptors to the .pak files that we need are passed in
719    // at process creation time.
720    int locale_pak_fd = base::GlobalDescriptors::GetInstance()->MaybeGet(
721        kAndroidLocalePakDescriptor);
722    CHECK(locale_pak_fd != -1);
723    ResourceBundle::InitSharedInstanceWithPakFile(base::File(locale_pak_fd),
724                                                  false);
725
726    int extra_pak_keys[] = {
727      kAndroidChrome100PercentPakDescriptor,
728      kAndroidUIResourcesPakDescriptor,
729    };
730    for (size_t i = 0; i < arraysize(extra_pak_keys); ++i) {
731      int pak_fd =
732          base::GlobalDescriptors::GetInstance()->MaybeGet(extra_pak_keys[i]);
733      CHECK(pak_fd != -1);
734      ResourceBundle::GetSharedInstance().AddDataPackFromFile(
735          base::File(pak_fd), ui::SCALE_FACTOR_100P);
736    }
737
738    base::i18n::SetICUDefaultLocale(locale);
739    const std::string loaded_locale = locale;
740#else
741    const std::string loaded_locale =
742        ResourceBundle::InitSharedInstanceWithLocale(locale, NULL);
743
744    base::FilePath resources_pack_path;
745    PathService::Get(chrome::FILE_RESOURCES_PACK, &resources_pack_path);
746    ResourceBundle::GetSharedInstance().AddDataPackFromPath(
747        resources_pack_path, ui::SCALE_FACTOR_NONE);
748#endif
749    CHECK(!loaded_locale.empty()) << "Locale could not be found for " <<
750        locale;
751
752#if !defined(CHROME_MULTIPLE_DLL_BROWSER)
753    if (process_type == switches::kUtilityProcess ||
754        process_type == switches::kZygoteProcess) {
755      chrome::ChromeContentUtilityClient::PreSandboxStartup();
756    }
757#endif
758  }
759
760#if defined(OS_POSIX) && !defined(OS_MACOSX)
761  // Zygote needs to call InitCrashReporter() in RunZygote().
762  if (process_type != switches::kZygoteProcess) {
763#if defined(OS_ANDROID)
764    if (process_type.empty())
765      breakpad::InitCrashReporter(process_type);
766    else
767      breakpad::InitNonBrowserCrashReporterForAndroid(process_type);
768#else  // !defined(OS_ANDROID)
769    breakpad::InitCrashReporter(process_type);
770#endif  // defined(OS_ANDROID)
771  }
772#endif  // defined(OS_POSIX) && !defined(OS_MACOSX)
773
774  // After all the platform Breakpads have been initialized, store the command
775  // line for crash reporting.
776  crash_keys::SetSwitchesFromCommandLine(&command_line);
777}
778
779void ChromeMainDelegate::SandboxInitialized(const std::string& process_type) {
780  startup_timer_->Stop();  // End of Startup Time Measurement.
781
782  // Note: If you are adding a new process type below, be sure to adjust the
783  // AdjustLinuxOOMScore function too.
784#if defined(OS_LINUX)
785  AdjustLinuxOOMScore(process_type);
786#endif
787#if defined(OS_WIN)
788  SuppressWindowsErrorDialogs();
789#endif
790}
791
792int ChromeMainDelegate::RunProcess(
793    const std::string& process_type,
794    const content::MainFunctionParams& main_function_params) {
795  // ANDROID doesn't support "service", so no ServiceProcessMain, and arraysize
796  // doesn't support empty array. So we comment out the block for Android.
797#if !defined(OS_ANDROID)
798  static const MainFunction kMainFunctions[] = {
799#if defined(ENABLE_FULL_PRINTING) && !defined(CHROME_MULTIPLE_DLL_CHILD)
800    { switches::kServiceProcess,     ServiceProcessMain },
801#endif
802
803#if defined(OS_MACOSX)
804    { switches::kRelauncherProcess,
805      mac_relauncher::internal::RelauncherMain },
806#endif
807
808    // This entry is not needed on Linux, where the NaCl loader
809    // process is launched via nacl_helper instead.
810#if !defined(DISABLE_NACL) && !defined(CHROME_MULTIPLE_DLL_BROWSER) && \
811    !defined(OS_LINUX)
812    { switches::kNaClLoaderProcess,  NaClMain },
813#else
814    { "<invalid>", NULL },  // To avoid constant array of size 0
815                            // when DISABLE_NACL and CHROME_MULTIPLE_DLL_CHILD
816#endif  // DISABLE_NACL
817  };
818
819  for (size_t i = 0; i < arraysize(kMainFunctions); ++i) {
820    if (process_type == kMainFunctions[i].name)
821      return kMainFunctions[i].function(main_function_params);
822  }
823#endif
824
825  return -1;
826}
827
828void ChromeMainDelegate::ProcessExiting(const std::string& process_type) {
829  if (SubprocessNeedsResourceBundle(process_type))
830    ResourceBundle::CleanupSharedInstance();
831#if !defined(OS_ANDROID)
832  logging::CleanupChromeLogging();
833#else
834  // Android doesn't use InitChromeLogging, so we close the log file manually.
835  logging::CloseLogFile();
836#endif  // !defined(OS_ANDROID)
837}
838
839#if defined(OS_MACOSX)
840bool ChromeMainDelegate::ProcessRegistersWithSystemProcess(
841    const std::string& process_type) {
842  return process_type == switches::kNaClLoaderProcess;
843}
844
845bool ChromeMainDelegate::ShouldSendMachPort(const std::string& process_type) {
846  return process_type != switches::kRelauncherProcess &&
847      process_type != switches::kServiceProcess;
848}
849
850bool ChromeMainDelegate::DelaySandboxInitialization(
851    const std::string& process_type) {
852  // NaClLoader does this in NaClMainPlatformDelegate::EnableSandbox().
853  // No sandbox needed for relauncher.
854  return process_type == switches::kNaClLoaderProcess ||
855      process_type == switches::kRelauncherProcess;
856}
857#elif defined(OS_POSIX) && !defined(OS_ANDROID)
858content::ZygoteForkDelegate* ChromeMainDelegate::ZygoteStarting() {
859#if defined(DISABLE_NACL)
860  return NULL;
861#else
862  return new NaClForkDelegate();
863#endif
864}
865
866void ChromeMainDelegate::ZygoteForked() {
867  Profiling::ProcessStarted();
868  if (Profiling::BeingProfiled()) {
869    base::debug::RestartProfilingAfterFork();
870    SetUpProfilingShutdownHandler();
871  }
872
873  // Needs to be called after we have chrome::DIR_USER_DATA.  BrowserMain sets
874  // this up for the browser process in a different manner.
875  const CommandLine* command_line = CommandLine::ForCurrentProcess();
876  std::string process_type =
877      command_line->GetSwitchValueASCII(switches::kProcessType);
878  breakpad::InitCrashReporter(process_type);
879
880  // Reset the command line for the newly spawned process.
881  crash_keys::SetSwitchesFromCommandLine(command_line);
882}
883
884#endif  // OS_MACOSX
885
886content::ContentBrowserClient*
887ChromeMainDelegate::CreateContentBrowserClient() {
888#if defined(CHROME_MULTIPLE_DLL_CHILD)
889  return NULL;
890#else
891  return g_chrome_content_browser_client.Pointer();
892#endif
893}
894
895content::ContentPluginClient* ChromeMainDelegate::CreateContentPluginClient() {
896#if defined(CHROME_MULTIPLE_DLL_BROWSER)
897  return NULL;
898#else
899  return g_chrome_content_plugin_client.Pointer();
900#endif
901}
902
903content::ContentRendererClient*
904ChromeMainDelegate::CreateContentRendererClient() {
905#if defined(CHROME_MULTIPLE_DLL_BROWSER)
906  return NULL;
907#else
908  return g_chrome_content_renderer_client.Pointer();
909#endif
910}
911
912content::ContentUtilityClient*
913ChromeMainDelegate::CreateContentUtilityClient() {
914#if defined(CHROME_MULTIPLE_DLL_BROWSER)
915  return NULL;
916#else
917  return g_chrome_content_utility_client.Pointer();
918#endif
919}
920