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Side by Side Diff: components/crash/content/app/crashpad_win.cc

Issue 1416133003: Crashpad Windows: Use the Crashpad client instead of Breakpad on Windows (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: add some stub gn files Created 5 years ago
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1 // Copyright 2015 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 "components/crash/content/app/crashpad.h"
6
7 #include "base/environment.h"
8 #include "base/lazy_instance.h"
9 #include "base/memory/scoped_ptr.h"
10 #include "base/numerics/safe_conversions.h"
11 #include "base/path_service.h"
12 #include "base/strings/string16.h"
13 #include "base/strings/string_number_conversions.h"
14 #include "base/strings/utf_string_conversions.h"
15 #include "build/build_config.h"
16 #include "components/crash/content/app/crash_reporter_client.h"
17 #include "third_party/crashpad/crashpad/client/crashpad_client.h"
18 #include "third_party/crashpad/crashpad/client/crashpad_info.h"
19
20 namespace crash_reporter {
21 namespace internal {
22
23 namespace {
24
25 base::LazyInstance<crashpad::CrashpadClient>::Leaky g_crashpad_client =
26 LAZY_INSTANCE_INITIALIZER;
27
28 } // namespace
29
30 base::FilePath PlatformCrashpadInitialization(bool initial_client,
31 bool browser_process) {
32 base::FilePath database_path; // Only valid in the browser process.
33 bool result;
34
35 const char kPipeNameVar[] = "CHROME_CRASHPAD_PIPE_NAME";
36 scoped_ptr<base::Environment> env(base::Environment::Create());
37
38 DCHECK_EQ(initial_client, browser_process);
39
40 if (initial_client) {
41 CrashReporterClient* crash_reporter_client = GetCrashReporterClient();
42 crash_reporter_client->GetCrashDumpLocation(&database_path);
43
44 base::FilePath exe_file;
45 CHECK(PathService::Get(base::FILE_EXE, &exe_file));
46 base::string16 product_name, version, special_build, channel_name;
47 crash_reporter_client->GetProductNameAndVersion(
48 exe_file, &product_name, &version, &special_build, &channel_name);
49 std::map<std::string, std::string> process_annotations;
50 process_annotations["prod"] = base::UTF16ToUTF8(product_name);
51 process_annotations["ver"] = base::UTF16ToUTF8(version);
52 process_annotations["channel"] = base::UTF16ToUTF8(channel_name);
53 if (!special_build.empty())
54 process_annotations["special"] = base::UTF16ToUTF8(special_build);
55 #if defined(ARCH_CPU_X86)
56 process_annotations["plat"] = std::string("Win32");
57 #elif defined(ARCH_CPU_X86_64)
58 process_annotations["plat"] = std::string("Win64");
59 #endif
60 #if defined(GOOGLE_CHROME_BUILD)
61 std::string url = "https://clients2.google.com/cr/report";
62 #else
63 std::string url;
64 #endif
65
66 std::vector<std::string> arguments;
67
68 // In test binaries, use crashpad_handler directly. Otherwise, we launch
69 // chrome.exe with --type=crashpad-handler.
70 if (exe_file.BaseName().value() != FILE_PATH_LITERAL("chrome.exe")) {
71 base::FilePath exe_dir;
72 CHECK(PathService::Get(base::DIR_EXE, &exe_dir));
73 exe_file = exe_dir.Append(FILE_PATH_LITERAL("crashpad_handler.exe"));
74 } else {
75 arguments.push_back("--type=crashpad-handler");
76 }
77
78 result = g_crashpad_client.Get().StartHandler(
79 exe_file, database_path, url, process_annotations, arguments, false);
80
81 // If we're the browser, push the pipe name into the environment so child
82 // processes can connect to it. If we inherited another crashpad_handler's
83 // pipe name, we'll overwrite it here.
84 env->SetVar(kPipeNameVar,
85 base::UTF16ToUTF8(g_crashpad_client.Get().GetHandlerIPCPipe()));
86 } else {
87 std::string pipe_name_utf8;
88 result = env->GetVar(kPipeNameVar, &pipe_name_utf8);
89 if (result) {
90 result = g_crashpad_client.Get().SetHandlerIPCPipe(
91 base::UTF8ToUTF16(pipe_name_utf8));
92 }
93 }
94
95 if (result) {
96 result = g_crashpad_client.Get().UseHandler();
97 }
98
99 return database_path;
100 }
101
102 extern "C" {
103
104 // Crashes the process after generating a dump for the provided exception. Note
105 // that the crash reporter should be initialized before calling this function
106 // for it to do anything.
107 // NOTE: This function is used by SyzyASAN to invoke a crash. If you change the
108 // the name or signature of this function you will break SyzyASAN instrumented
109 // releases of Chrome. Please contact syzygy-team@chromium.org before doing so!
110 int __declspec(dllexport) CrashForException(
111 EXCEPTION_POINTERS* info) {
112 g_crashpad_client.Get().DumpAndCrash(info);
113 return EXCEPTION_CONTINUE_SEARCH;
114 }
115
116 #if defined(ARCH_CPU_X86_64)
117
118 static int CrashForExceptionInNonABICompliantCodeRange(
119 PEXCEPTION_RECORD ExceptionRecord,
120 ULONG64 EstablisherFrame,
121 PCONTEXT ContextRecord,
122 PDISPATCHER_CONTEXT DispatcherContext) {
123 EXCEPTION_POINTERS info = { ExceptionRecord, ContextRecord };
124 return CrashForException(&info);
125 }
126
127 // See https://msdn.microsoft.com/en-us/library/ddssxxy8.aspx
128 typedef struct _UNWIND_INFO {
129 unsigned char Version : 3;
130 unsigned char Flags : 5;
131 unsigned char SizeOfProlog;
132 unsigned char CountOfCodes;
133 unsigned char FrameRegister : 4;
134 unsigned char FrameOffset : 4;
135 ULONG ExceptionHandler;
136 } UNWIND_INFO, *PUNWIND_INFO;
137
138 struct ExceptionHandlerRecord {
139 RUNTIME_FUNCTION runtime_function;
140 UNWIND_INFO unwind_info;
141 unsigned char thunk[12];
142 };
143
144 // These are GetProcAddress()d from V8 binding code.
145 void __declspec(dllexport) __cdecl RegisterNonABICompliantCodeRange(
146 void* start,
147 size_t size_in_bytes) {
148 ExceptionHandlerRecord* record =
149 reinterpret_cast<ExceptionHandlerRecord*>(start);
150
151 // We assume that the first page of the code range is executable and
152 // committed and reserved for breakpad. What could possibly go wrong?
153
154 // All addresses are 32bit relative offsets to start.
155 record->runtime_function.BeginAddress = 0;
156 record->runtime_function.EndAddress =
157 base::checked_cast<DWORD>(size_in_bytes);
158 record->runtime_function.UnwindData =
159 offsetof(ExceptionHandlerRecord, unwind_info);
160
161 // Create unwind info that only specifies an exception handler.
162 record->unwind_info.Version = 1;
163 record->unwind_info.Flags = UNW_FLAG_EHANDLER;
164 record->unwind_info.SizeOfProlog = 0;
165 record->unwind_info.CountOfCodes = 0;
166 record->unwind_info.FrameRegister = 0;
167 record->unwind_info.FrameOffset = 0;
168 record->unwind_info.ExceptionHandler =
169 offsetof(ExceptionHandlerRecord, thunk);
170
171 // Hardcoded thunk.
172 // mov imm64, rax
173 record->thunk[0] = 0x48;
174 record->thunk[1] = 0xb8;
175 void* handler = &CrashForExceptionInNonABICompliantCodeRange;
176 memcpy(&record->thunk[2], &handler, 8);
177
178 // jmp rax
179 record->thunk[10] = 0xff;
180 record->thunk[11] = 0xe0;
181
182 // Protect reserved page against modifications.
183 DWORD old_protect;
184 CHECK(VirtualProtect(
185 start, sizeof(ExceptionHandlerRecord), PAGE_EXECUTE_READ, &old_protect));
186 CHECK(RtlAddFunctionTable(
187 &record->runtime_function, 1, reinterpret_cast<DWORD64>(start)));
188 }
189
190 void __declspec(dllexport) __cdecl UnregisterNonABICompliantCodeRange(
191 void* start) {
192 ExceptionHandlerRecord* record =
193 reinterpret_cast<ExceptionHandlerRecord*>(start);
194
195 CHECK(RtlDeleteFunctionTable(&record->runtime_function));
196 }
197 #endif // ARCH_CPU_X86_64
198
199 } // extern "C"
200
201 } // namespace internal
202 } // namespace crash_reporter
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