Revert of Turn components/crash into a layered component.

components/crash/app/breakpad_mac.mm

+// Copyright 2013 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#import "components/crash/app/breakpad_mac.h"
+
+#include <CoreFoundation/CoreFoundation.h>
+#import <Foundation/Foundation.h>
+
+#include "base/auto_reset.h"
+#include "base/base_switches.h"
+#import "base/basictypes.h"
+#include "base/command_line.h"
+#include "base/debug/crash_logging.h"
+#include "base/debug/dump_without_crashing.h"
+#include "base/files/file_path.h"
+#include "base/files/file_util.h"
+#import "base/logging.h"
+#include "base/mac/bundle_locations.h"
+#include "base/mac/foundation_util.h"
+#include "base/mac/mac_util.h"
+#include "base/mac/scoped_cftyperef.h"
+#import "base/mac/scoped_nsautorelease_pool.h"
+#include "base/strings/sys_string_conversions.h"
+#include "base/threading/platform_thread.h"
+#include "base/threading/thread_restrictions.h"
+#import "breakpad/src/client/mac/Framework/Breakpad.h"
+#include "components/crash/app/crash_reporter_client.h"
+
+using crash_reporter::GetCrashReporterClient;
+
+namespace breakpad {
+
+namespace {
+
+BreakpadRef gBreakpadRef = NULL;
+
+void SetCrashKeyValue(NSString* key, NSString* value) {
+  // Comment repeated from header to prevent confusion:
+  // IMPORTANT: On OS X, the key/value pairs are sent to the crash server
+  // out of bounds and not recorded on disk in the minidump, this means
+  // that if you look at the minidump file locally you won't see them!
+  if (gBreakpadRef == NULL) {
+    return;
+  }
+
+  BreakpadAddUploadParameter(gBreakpadRef, key, value);
+}
+
+void ClearCrashKeyValue(NSString* key) {
+  if (gBreakpadRef == NULL) {
+    return;
+  }
+
+  BreakpadRemoveUploadParameter(gBreakpadRef, key);
+}
+
+void SetCrashKeyValueImpl(const base::StringPiece& key,
+                          const base::StringPiece& value) {
+  @autoreleasepool {
+    SetCrashKeyValue(base::SysUTF8ToNSString(key.as_string()),
+                     base::SysUTF8ToNSString(value.as_string()));
+  }
+}
+
+void ClearCrashKeyValueImpl(const base::StringPiece& key) {
+  @autoreleasepool {
+    ClearCrashKeyValue(base::SysUTF8ToNSString(key.as_string()));
+  }
+}
+
+bool FatalMessageHandler(int severity, const char* file, int line,
+                         size_t message_start, const std::string& str) {
+  // Do not handle non-FATAL.
+  if (severity != logging::LOG_FATAL)
+    return false;
+
+  // In case of OOM condition, this code could be reentered when
+  // constructing and storing the key.  Using a static is not
+  // thread-safe, but if multiple threads are in the process of a
+  // fatal crash at the same time, this should work.
+  static bool guarded = false;
+  if (guarded)
+    return false;
+
+  base::AutoReset<bool> guard(&guarded, true);
+
+  // Only log last path component.  This matches logging.cc.
+  if (file) {
+    const char* slash = strrchr(file, '/');
+    if (slash)
+      file = slash + 1;
+  }
+
+  NSString* fatal_key = @"LOG_FATAL";
+  NSString* fatal_value =
+      [NSString stringWithFormat:@"%s:%d: %s",
+                                 file, line, str.c_str() + message_start];
+  SetCrashKeyValue(fatal_key, fatal_value);
+
+  // Rather than including the code to force the crash here, allow the
+  // caller to do it.
+  return false;
+}
+
+// BreakpadGenerateAndSendReport() does not report the current
+// thread.  This class can be used to spin up a thread to run it.
+class DumpHelper : public base::PlatformThread::Delegate {
+ public:
+  static void DumpWithoutCrashing() {
+    DumpHelper dumper;
+    base::PlatformThreadHandle handle;
+    if (base::PlatformThread::Create(0, &dumper, &handle)) {
+      // The entire point of this is to block so that the correct
+      // stack is logged.
+      base::ThreadRestrictions::ScopedAllowIO allow_io;
+      base::PlatformThread::Join(handle);
+    }
+  }
+
+ private:
+  DumpHelper() {}
+
+  void ThreadMain() override {
+    base::PlatformThread::SetName("CrDumpHelper");
+    BreakpadGenerateAndSendReport(gBreakpadRef);
+  }
+
+  DISALLOW_COPY_AND_ASSIGN(DumpHelper);
+};
+
+void SIGABRTHandler(int signal) {
+  // The OSX abort() (link below) masks all signals for the process,
+  // and all except SIGABRT for the thread.  SIGABRT will be masked
+  // when the SIGABRT is sent, which means at this point only SIGKILL
+  // and SIGSTOP can be delivered.  Unmask others so that the code
+  // below crashes as desired.
+  //
+  // http://www.opensource.apple.com/source/Libc/Libc-825.26/stdlib/FreeBSD/abort.c
+  sigset_t mask;
+  sigemptyset(&mask);
+  sigaddset(&mask, signal);
+  pthread_sigmask(SIG_SETMASK, &mask, NULL);
+
+  // Most interesting operations are not safe in a signal handler, just crash.
+  char* volatile death_ptr = NULL;
+  *death_ptr = '!';
+}
+
+}  // namespace
+
+bool IsCrashReporterEnabled() {
+  return gBreakpadRef != NULL;
+}
+
+// Only called for a branded build of Chrome.app.
+void InitCrashReporter(const std::string& process_type) {
+  DCHECK(!gBreakpadRef);
+  base::mac::ScopedNSAutoreleasePool autorelease_pool;
+
+  // Check whether crash reporting should be enabled. If enterprise
+  // configuration management controls crash reporting, it takes precedence.
+  // Otherwise, check whether the user has consented to stats and crash
+  // reporting. The browser process can make this determination directly.
+  // Helper processes may not have access to the disk or to the same data as
+  // the browser process, so the browser passes the decision to them on the
+  // command line.
+  NSBundle* main_bundle = base::mac::FrameworkBundle();
+  bool is_browser = !base::mac::IsBackgroundOnlyProcess();
+  bool enable_breakpad = false;
+  base::CommandLine* command_line = base::CommandLine::ForCurrentProcess();
+
+  if (is_browser) {
+    // Since the configuration management infrastructure is possibly not
+    // initialized when this code runs, read the policy preference directly.
+    if (!GetCrashReporterClient()->ReportingIsEnforcedByPolicy(
+            &enable_breakpad)) {
+      // Controlled by the user. The crash reporter may be enabled by
+      // preference or through an environment variable, but the kDisableBreakpad
+      // switch overrides both.
+      enable_breakpad = GetCrashReporterClient()->GetCollectStatsConsent() ||
+                        GetCrashReporterClient()->IsRunningUnattended();
+      enable_breakpad &= !command_line->HasSwitch(switches::kDisableBreakpad);
+    }
+  } else {
+    // This is a helper process, check the command line switch.
+    enable_breakpad = command_line->HasSwitch(switches::kEnableCrashReporter);
+  }
+
+  if (!enable_breakpad) {
+    VLOG_IF(1, is_browser) << "Breakpad disabled";
+    return;
+  }
+
+  // Tell Breakpad where crash_inspector and crash_report_sender are.
+  NSString* resource_path = [main_bundle resourcePath];
+  NSString *inspector_location =
+      [resource_path stringByAppendingPathComponent:@"crash_inspector"];
+  NSString *reporter_bundle_location =
+      [resource_path stringByAppendingPathComponent:@"crash_report_sender.app"];
+  NSString *reporter_location =
+      [[NSBundle bundleWithPath:reporter_bundle_location] executablePath];
+
+  if (!inspector_location || !reporter_location) {
+    VLOG_IF(1, is_browser && base::mac::AmIBundled()) << "Breakpad disabled";
+    return;
+  }
+
+  NSDictionary* info_dictionary = [main_bundle infoDictionary];
+  NSMutableDictionary *breakpad_config =
+      [[info_dictionary mutableCopy] autorelease];
+  [breakpad_config setObject:inspector_location
+                      forKey:@BREAKPAD_INSPECTOR_LOCATION];
+  [breakpad_config setObject:reporter_location
+                      forKey:@BREAKPAD_REPORTER_EXE_LOCATION];
+
+  // In the main application (the browser process), crashes can be passed to
+  // the system's Crash Reporter.  This allows the system to notify the user
+  // when the application crashes, and provide the user with the option to
+  // restart it.
+  if (is_browser)
+    [breakpad_config setObject:@"NO" forKey:@BREAKPAD_SEND_AND_EXIT];
+
+  base::FilePath dir_crash_dumps;
+  GetCrashReporterClient()->GetCrashDumpLocation(&dir_crash_dumps);
+  [breakpad_config setObject:base::SysUTF8ToNSString(dir_crash_dumps.value())
+                      forKey:@BREAKPAD_DUMP_DIRECTORY];
+
+  // Temporarily run Breakpad in-process on 10.10 and later because APIs that
+  // it depends on got broken (http://crbug.com/386208).
+  // This can catch crashes in the browser process only.
+  if (is_browser && base::mac::IsOSYosemiteOrLater()) {
+    [breakpad_config setObject:[NSNumber numberWithBool:YES]
+                        forKey:@BREAKPAD_IN_PROCESS];
+  }
+
+  // Initialize Breakpad.
+  gBreakpadRef = BreakpadCreate(breakpad_config);
+  if (!gBreakpadRef) {
+    LOG_IF(ERROR, base::mac::AmIBundled()) << "Breakpad initialization failed";
+    return;
+  }
+
+  // Initialize the scoped crash key system.
+  base::debug::SetCrashKeyReportingFunctions(&SetCrashKeyValueImpl,
+                                             &ClearCrashKeyValueImpl);
+  GetCrashReporterClient()->RegisterCrashKeys();
+
+  // Set Breakpad metadata values.  These values are added to Info.plist during
+  // the branded Google Chrome.app build.
+  SetCrashKeyValue(@"ver", [info_dictionary objectForKey:@BREAKPAD_VERSION]);
+  SetCrashKeyValue(@"prod", [info_dictionary objectForKey:@BREAKPAD_PRODUCT]);
+  SetCrashKeyValue(@"plat", @"OS X");
+
+  logging::SetLogMessageHandler(&FatalMessageHandler);
+  base::debug::SetDumpWithoutCrashingFunction(&DumpHelper::DumpWithoutCrashing);
+
+  // abort() sends SIGABRT, which breakpad does not intercept.
+  // Register a signal handler to crash in a way breakpad will
+  // intercept.
+  struct sigaction sigact;
+  memset(&sigact, 0, sizeof(sigact));
+  sigact.sa_handler = SIGABRTHandler;
+  CHECK(0 == sigaction(SIGABRT, &sigact, NULL));
+}
+
+void InitCrashProcessInfo(const std::string& process_type_switch) {
+  if (gBreakpadRef == NULL) {
+    return;
+  }
+
+  // Determine the process type.
+  NSString* process_type = @"browser";
+  if (!process_type_switch.empty()) {
+    process_type = base::SysUTF8ToNSString(process_type_switch);
+  }
+
+  // Store process type in crash dump.
+  SetCrashKeyValue(@"ptype", process_type);
+
+  NSString* pid_value =
+      [NSString stringWithFormat:@"%d", static_cast<unsigned int>(getpid())];
+  SetCrashKeyValue(@"pid", pid_value);
+}
+
+}  // namespace breakpad