Revert of Reland: Crashpad Windows: Use the Crashpad client instead of Breakpad on Windows

components/crash/content/app/crashpad_win.cc

-// Copyright 2015 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.
-
-#include "components/crash/content/app/crashpad.h"
-
-#include "base/environment.h"
-#include "base/lazy_instance.h"
-#include "base/memory/scoped_ptr.h"
-#include "base/numerics/safe_conversions.h"
-#include "base/path_service.h"
-#include "base/strings/string16.h"
-#include "base/strings/string_number_conversions.h"
-#include "base/strings/utf_string_conversions.h"
-#include "build/build_config.h"
-#include "components/crash/content/app/crash_reporter_client.h"
-#include "third_party/crashpad/crashpad/client/crashpad_client.h"
-#include "third_party/crashpad/crashpad/client/crashpad_info.h"
-
-namespace crash_reporter {
-namespace internal {
-
-namespace {
-
-base::LazyInstance<crashpad::CrashpadClient>::Leaky g_crashpad_client =
-    LAZY_INSTANCE_INITIALIZER;
-
-}  // namespace
-
-base::FilePath PlatformCrashpadInitialization(bool initial_client,
-                                              bool browser_process) {
-  base::FilePath database_path;  // Only valid in the browser process.
-  bool result;
-
-  const char kPipeNameVar[] = "CHROME_CRASHPAD_PIPE_NAME";
-  scoped_ptr<base::Environment> env(base::Environment::Create());
-
-  DCHECK_EQ(initial_client, browser_process);
-
-  if (initial_client) {
-    CrashReporterClient* crash_reporter_client = GetCrashReporterClient();
-    crash_reporter_client->GetCrashDumpLocation(&database_path);
-
-    base::FilePath exe_file;
-    CHECK(PathService::Get(base::FILE_EXE, &exe_file));
-    base::string16 product_name, version, special_build, channel_name;
-    crash_reporter_client->GetProductNameAndVersion(
-        exe_file, &product_name, &version, &special_build, &channel_name);
-    std::map<std::string, std::string> process_annotations;
-    process_annotations["prod"] = base::UTF16ToUTF8(product_name);
-    process_annotations["ver"] = base::UTF16ToUTF8(version);
-    process_annotations["channel"] = base::UTF16ToUTF8(channel_name);
-    if (!special_build.empty())
-      process_annotations["special"] = base::UTF16ToUTF8(special_build);
-#if defined(ARCH_CPU_X86)
-    process_annotations["plat"] = std::string("Win32");
-#elif defined(ARCH_CPU_X86_64)
-    process_annotations["plat"] = std::string("Win64");
-#endif
-#if defined(GOOGLE_CHROME_BUILD)
-    std::string url = "https://clients2.google.com/cr/report";
-#else
-    std::string url;
-#endif
-
-    std::vector<std::string> arguments;
-
-    // In test binaries, use crashpad_handler directly. Otherwise, we launch
-    // chrome.exe with --type=crashpad-handler.
-    if (exe_file.BaseName().value() != FILE_PATH_LITERAL("chrome.exe")) {
-      base::FilePath exe_dir;
-      CHECK(PathService::Get(base::DIR_EXE, &exe_dir));
-      exe_file = exe_dir.Append(FILE_PATH_LITERAL("crashpad_handler.exe"));
-    } else {
-      arguments.push_back("--type=crashpad-handler");
-    }
-
-    result = g_crashpad_client.Get().StartHandler(
-        exe_file, database_path, url, process_annotations, arguments, false);
-
-    // If we're the browser, push the pipe name into the environment so child
-    // processes can connect to it. If we inherited another crashpad_handler's
-    // pipe name, we'll overwrite it here.
-    env->SetVar(kPipeNameVar,
-                base::UTF16ToUTF8(g_crashpad_client.Get().GetHandlerIPCPipe()));
-  } else {
-    std::string pipe_name_utf8;
-    result = env->GetVar(kPipeNameVar, &pipe_name_utf8);
-    if (result) {
-      result = g_crashpad_client.Get().SetHandlerIPCPipe(
-          base::UTF8ToUTF16(pipe_name_utf8));
-    }
-  }
-
-  if (result) {
-    result = g_crashpad_client.Get().UseHandler();
-  }
-
-  return database_path;
-}
-
-extern "C" {
-
-// Crashes the process after generating a dump for the provided exception. Note
-// that the crash reporter should be initialized before calling this function
-// for it to do anything.
-// NOTE: This function is used by SyzyASAN to invoke a crash. If you change the
-// the name or signature of this function you will break SyzyASAN instrumented
-// releases of Chrome. Please contact syzygy-team@chromium.org before doing so!
-int __declspec(dllexport) CrashForException(
-    EXCEPTION_POINTERS* info) {
-  g_crashpad_client.Get().DumpAndCrash(info);
-  return EXCEPTION_CONTINUE_SEARCH;
-}
-
-#if defined(ARCH_CPU_X86_64)
-
-static int CrashForExceptionInNonABICompliantCodeRange(
-    PEXCEPTION_RECORD ExceptionRecord,
-    ULONG64 EstablisherFrame,
-    PCONTEXT ContextRecord,
-    PDISPATCHER_CONTEXT DispatcherContext) {
-  EXCEPTION_POINTERS info = { ExceptionRecord, ContextRecord };
-  return CrashForException(&info);
-}
-
-// See https://msdn.microsoft.com/en-us/library/ddssxxy8.aspx
-typedef struct _UNWIND_INFO {
-  unsigned char Version : 3;
-  unsigned char Flags : 5;
-  unsigned char SizeOfProlog;
-  unsigned char CountOfCodes;
-  unsigned char FrameRegister : 4;
-  unsigned char FrameOffset : 4;
-  ULONG ExceptionHandler;
-} UNWIND_INFO, *PUNWIND_INFO;
-
-struct ExceptionHandlerRecord {
-  RUNTIME_FUNCTION runtime_function;
-  UNWIND_INFO unwind_info;
-  unsigned char thunk[12];
-};
-
-// These are GetProcAddress()d from V8 binding code.
-void __declspec(dllexport) __cdecl RegisterNonABICompliantCodeRange(
-    void* start,
-    size_t size_in_bytes) {
-  ExceptionHandlerRecord* record =
-      reinterpret_cast<ExceptionHandlerRecord*>(start);
-
-  // We assume that the first page of the code range is executable and
-  // committed and reserved for breakpad. What could possibly go wrong?
-
-  // All addresses are 32bit relative offsets to start.
-  record->runtime_function.BeginAddress = 0;
-  record->runtime_function.EndAddress =
-      base::checked_cast<DWORD>(size_in_bytes);
-  record->runtime_function.UnwindData =
-      offsetof(ExceptionHandlerRecord, unwind_info);
-
-  // Create unwind info that only specifies an exception handler.
-  record->unwind_info.Version = 1;
-  record->unwind_info.Flags = UNW_FLAG_EHANDLER;
-  record->unwind_info.SizeOfProlog = 0;
-  record->unwind_info.CountOfCodes = 0;
-  record->unwind_info.FrameRegister = 0;
-  record->unwind_info.FrameOffset = 0;
-  record->unwind_info.ExceptionHandler =
-      offsetof(ExceptionHandlerRecord, thunk);
-
-  // Hardcoded thunk.
-  // mov imm64, rax
-  record->thunk[0] = 0x48;
-  record->thunk[1] = 0xb8;
-  void* handler = &CrashForExceptionInNonABICompliantCodeRange;
-  memcpy(&record->thunk[2], &handler, 8);
-
-  // jmp rax
-  record->thunk[10] = 0xff;
-  record->thunk[11] = 0xe0;
-
-  // Protect reserved page against modifications.
-  DWORD old_protect;
-  CHECK(VirtualProtect(
-      start, sizeof(ExceptionHandlerRecord), PAGE_EXECUTE_READ, &old_protect));
-  CHECK(RtlAddFunctionTable(
-      &record->runtime_function, 1, reinterpret_cast<DWORD64>(start)));
-}
-
-void __declspec(dllexport) __cdecl UnregisterNonABICompliantCodeRange(
-    void* start) {
-  ExceptionHandlerRecord* record =
-      reinterpret_cast<ExceptionHandlerRecord*>(start);
-
-  CHECK(RtlDeleteFunctionTable(&record->runtime_function));
-}
-#endif  // ARCH_CPU_X86_64
-
-}  // extern "C"
-
-}  // namespace internal
-}  // namespace crash_reporter