Index: chrome_elf/breakpad.cc |
diff --git a/chrome_elf/breakpad.cc b/chrome_elf/breakpad.cc |
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+// Copyright 2014 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. |
+ |
+// This module contains the necessary code to register the Breakpad exception |
+// handler. This implementation is based on Chrome's crash reporting code. |
+ |
+#include "chrome_elf/breakpad.h" |
+ |
+#include <sddl.h> |
+ |
+#include "base/macros.h" |
+#include "breakpad/src/client/windows/handler/exception_handler.h" |
+#include "chrome_elf/chrome_elf_util.h" |
+#include "version.h" // NOLINT |
+ |
+google_breakpad::ExceptionHandler* g_elf_breakpad = NULL; |
+ |
+namespace { |
+ |
+const wchar_t kBreakpadProductName[] = L"ChromeElf"; |
+const wchar_t kBreakpadVersionEntry[] = L"ver"; |
+const wchar_t kBreakpadProdEntry[] = L"prod"; |
+const wchar_t kBreakpadPlatformEntry[] = L"plat"; |
+const wchar_t kBreakpadPlatformWin32[] = L"Win32"; |
+ |
+// The protocol for connecting to the out-of-process Breakpad crash |
+// reporter is different for x86-32 and x86-64: the message sizes |
+// are different because the message struct contains a pointer. As |
+// a result, there are two different named pipes to connect to. The |
+// 64-bit one is distinguished with an "-x64" suffix. |
+const wchar_t kChromePipeName[] = L"\\\\.\\pipe\\ChromeCrashServices\\"; |
+const wchar_t kGoogleUpdatePipeName[] = L"\\\\.\\pipe\\GoogleCrashServices\\"; |
+const wchar_t kSystemPrincipalSid[] = L"S-1-5-18"; |
+ |
+const wchar_t kNoErrorDialogs[] = L"noerrdialogs"; |
+const wchar_t kChromeHeadless[] = L"CHROME_HEADLESS"; |
+ |
+google_breakpad::CustomClientInfo* GetCustomInfo() { |
+ static google_breakpad::CustomInfoEntry ver_entry( |
+ kBreakpadVersionEntry, TEXT(CHROME_VERSION_STRING)); |
+ static google_breakpad::CustomInfoEntry prod_entry( |
+ kBreakpadProdEntry, kBreakpadProductName); |
+ static google_breakpad::CustomInfoEntry plat_entry( |
+ kBreakpadPlatformEntry, kBreakpadPlatformWin32); |
+ static google_breakpad::CustomInfoEntry entries[] = { |
+ ver_entry, prod_entry, plat_entry }; |
+ static google_breakpad::CustomClientInfo custom_info = { |
+ entries, arraysize(entries) }; |
+ return &custom_info; |
+} |
+ |
+base::string16 GetUserSidString() { |
+ // Get the current token. |
+ HANDLE token = NULL; |
+ base::string16 user_sid; |
+ if (!::OpenProcessToken(::GetCurrentProcess(), TOKEN_QUERY, &token)) |
+ return user_sid; |
+ |
+ DWORD size = sizeof(TOKEN_USER) + SECURITY_MAX_SID_SIZE; |
+ BYTE user_bytes[sizeof(TOKEN_USER) + SECURITY_MAX_SID_SIZE] = {}; |
+ TOKEN_USER* user = reinterpret_cast<TOKEN_USER*>(user_bytes); |
+ |
+ wchar_t* sid_string; |
+ if (::GetTokenInformation(token, TokenUser, user, size, &size) && |
+ user->User.Sid && ::ConvertSidToStringSid(user->User.Sid, &sid_string)) { |
grt (UTC plus 2)
2014/02/17 20:49:39
nit: i find this a little easier to read with ::Co
Cait (Slow)
2014/02/18 23:03:12
Done.
|
+ user_sid = sid_string; |
+ ::LocalFree(sid_string); |
+ } |
+ |
+ CloseHandle(token); |
+ return user_sid; |
+} |
+ |
+bool IsHeadless() { |
+ DWORD ret = ::GetEnvironmentVariable(L"CHROME_HEADLESS", NULL, 0); |
+ bool has_env_var = ret != 0; |
grt (UTC plus 2)
2014/02/17 20:49:39
if (ret != 0)
return true;
Cait (Slow)
2014/02/18 23:03:12
Done.
Cait (Slow)
2014/02/18 23:03:12
Done.
|
+ |
+ wchar_t* command_line = ::GetCommandLine(); |
+ bool has_flag = (command_line && wcsstr(command_line, kNoErrorDialogs)); |
grt (UTC plus 2)
2014/02/17 20:49:39
i'm a little worried that this will match things t
Cait (Slow)
2014/02/18 23:03:12
Done.
|
+ |
+ return has_env_var || has_flag; |
+} |
+ |
+} // namespace |
+ |
+int GenerateCrashDump(EXCEPTION_POINTERS* exinfo) { |
+ DWORD code = exinfo->ExceptionRecord->ExceptionCode; |
+ if (code == EXCEPTION_BREAKPOINT || code == EXCEPTION_SINGLE_STEP) |
+ return EXCEPTION_CONTINUE_SEARCH; |
+ |
+ if (g_elf_breakpad != NULL) |
+ g_elf_breakpad->WriteMinidumpForException(exinfo); |
+ return EXCEPTION_CONTINUE_SEARCH; |
+} |
+ |
+void InitializeCrashReporting() { |
+ wchar_t exe_path[MAX_PATH] = {}; |
+ if(!::GetModuleFileName(NULL, exe_path, arraysize(exe_path))) |
+ return; |
+ |
+ // Do not set up crash reporting if the user has not consented to it. |
+ if (!AreUsageStatsEnabled(exe_path)) |
grt (UTC plus 2)
2014/02/17 20:49:39
policy trumps usagestats, so only check this if !u
Cait (Slow)
2014/02/18 23:03:12
Done.
|
+ return; |
+ |
+ // Disable the message box for assertions. |
+ _CrtSetReportMode(_CRT_ASSERT, 0); |
+ |
+ // Get the alternate dump directory. We use the temp path. |
+ // N.B. We don't use base::GetTempDir() here to avoid running more code then |
+ // necessary before crashes can be properly reported. |
+ wchar_t temp_directory[MAX_PATH + 1] = {}; |
+ DWORD length = GetTempPath(MAX_PATH, temp_directory); |
+ if (length == 0) |
+ return; |
+ |
+ // Minidump with stacks, PEB, TEBs and unloaded module list. |
+ MINIDUMP_TYPE dump_type = static_cast<MINIDUMP_TYPE>( |
+ MiniDumpWithProcessThreadData | // Get PEB and TEB. |
+ MiniDumpWithUnloadedModules | // Get unloaded modules when available. |
+ MiniDumpWithIndirectlyReferencedMemory); // Get memory referenced by |
+ // stack. |
+ |
+ base::string16 pipe_name; |
+ |
+ bool enabled; |
grt (UTC plus 2)
2014/02/17 20:49:39
nit: initialize to something. also, consider renam
Cait (Slow)
2014/02/18 23:03:12
Done.
|
+ bool use_policy = ReportingIsEnforcedByPolicy(&enabled); |
+ |
+ if (!use_policy && IsHeadless()) { |
+ pipe_name = kChromePipeName; |
+ } else { |
grt (UTC plus 2)
2014/02/17 20:49:39
consider:
} else if (use_policy ? enabled : AreU
Cait (Slow)
2014/02/18 23:03:12
Done.
|
+ // Build the pipe name. It can be one of: |
+ // 32-bit system: \\.\pipe\GoogleCrashServices\S-1-5-18 |
+ // 32-bit user: \\.\pipe\GoogleCrashServices\<user SID> |
+ // 64-bit system: \\.\pipe\GoogleCrashServices\S-1-5-18-x64 |
+ // 64-bit user: \\.\pipe\GoogleCrashServices\<user SID>-x64 |
+ base::string16 user_sid = IsSystemInstall(exe_path) ? kSystemPrincipalSid : |
+ GetUserSidString(); |
+ if (user_sid.empty()) |
+ return; |
+ |
+ base::string16 pipe_name = kGoogleUpdatePipeName; |
+ pipe_name += user_sid; |
+ |
+#if defined(_WIN64) |
+ pipe_name += L"-x64"; |
+#endif |
+ } |
+ |
+ g_elf_breakpad = new google_breakpad::ExceptionHandler( |
+ temp_directory, |
+ NULL, |
+ NULL, |
+ NULL, |
+ google_breakpad::ExceptionHandler::HANDLER_ALL, |
+ dump_type, |
+ pipe_name.c_str(), |
+ GetCustomInfo()); |
+ |
+ if (g_elf_breakpad->IsOutOfProcess()) { |
+ // Tells breakpad to handle breakpoint and single step exceptions. |
+ g_elf_breakpad->set_handle_debug_exceptions(true); |
+ } |
+} |