1 /*
2 * Copyright (c) 2024 Huawei Device Co., Ltd.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at
6 *
7 * http://www.apache.org/licenses/LICENSE-2.0
8 *
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
14 */
15
16 #include "crash_exception.h"
17
18 #include <map>
19 #include <regex>
20 #include <sys/time.h>
21 #include "dfx_errors.h"
22 #ifndef HISYSEVENT_DISABLE
23 #include "hisysevent.h"
24 #endif
25
26 namespace OHOS {
27 namespace HiviewDFX {
28
29 static bool g_isInitProcessInfo = false;
30 static std::string g_crashProcessName = "";
31 static int32_t g_crashProcessPid = 0;
32 static int32_t g_crashProcessUid = 0;
33
GetTimeMillisec(void)34 uint64_t GetTimeMillisec(void)
35 {
36 struct timespec ts;
37 (void)clock_gettime(CLOCK_REALTIME, &ts);
38 return ((uint64_t)ts.tv_sec * NUMBER_ONE_THOUSAND) +
39 (((uint64_t)ts.tv_nsec) / NUMBER_ONE_MILLION);
40 }
41
SetCrashProcInfo(std::string & name,int32_t pid,int32_t uid)42 void SetCrashProcInfo(std::string& name, int32_t pid, int32_t uid)
43 {
44 if (pid <= 0) {
45 return;
46 }
47 g_isInitProcessInfo = true;
48 g_crashProcessName = name;
49 g_crashProcessPid = pid;
50 g_crashProcessUid = uid;
51 }
52
GetCrashDescription(const int32_t errCode)53 static const char* GetCrashDescription(const int32_t errCode)
54 {
55 size_t i;
56
57 for (i = 0; i < sizeof(g_crashExceptionMap) / sizeof(g_crashExceptionMap[0]); i++) {
58 if (errCode == g_crashExceptionMap[i].errCode) {
59 return g_crashExceptionMap[i].str;
60 }
61 }
62 return g_crashExceptionMap[i - 1].str; /* the end of map is "unknown reason" */
63 }
64
ReportCrashException(const char * pName,int32_t pid,int32_t uid,int32_t errCode)65 void ReportCrashException(const char* pName, int32_t pid, int32_t uid, int32_t errCode)
66 {
67 if (pName == nullptr || strnlen(pName, NAME_BUF_LEN) == NAME_BUF_LEN) {
68 return;
69 }
70
71 ReportCrashException(std::string(pName), pid, uid, errCode);
72 }
73
ReportCrashException(std::string name,int32_t pid,int32_t uid,int32_t errCode)74 void ReportCrashException(std::string name, int32_t pid, int32_t uid, int32_t errCode)
75 {
76 #ifndef HISYSEVENT_DISABLE
77 if (errCode == CrashExceptionCode::CRASH_ESUCCESS) {
78 return;
79 }
80 HiSysEventWrite(
81 HiSysEvent::Domain::RELIABILITY,
82 "CPP_CRASH_EXCEPTION",
83 HiSysEvent::EventType::FAULT,
84 "PROCESS_NAME", name,
85 "PID", pid,
86 "UID", uid,
87 "HAPPEN_TIME", GetTimeMillisec(),
88 "ERROR_CODE", errCode,
89 "ERROR_MSG", GetCrashDescription(errCode));
90 #endif
91 }
92
ReportUnwinderException(uint16_t unwError)93 void ReportUnwinderException(uint16_t unwError)
94 {
95 if (!g_isInitProcessInfo) {
96 return;
97 }
98
99 const std::map<uint16_t, int32_t> unwMaps = {
100 { UnwindErrorCode::UNW_ERROR_STEP_ARK_FRAME, CrashExceptionCode::CRASH_UNWIND_EFRAME },
101 { UnwindErrorCode::UNW_ERROR_INVALID_CONTEXT, CrashExceptionCode::CRASH_UNWIND_ECONTEXT },
102 };
103 int32_t errCode = 0;
104 auto iter = unwMaps.find(unwError);
105 if (iter == unwMaps.end()) {
106 return;
107 }
108 errCode = iter->second;
109 ReportCrashException(g_crashProcessName, g_crashProcessPid, g_crashProcessUid, errCode);
110 }
111
CheckCrashLogValid(std::string & file)112 int32_t CheckCrashLogValid(std::string& file)
113 {
114 struct LogValidCheckInfo checkMap[] = {
115 { "Fault thread info:", "Tid:\\d+, Name:\\S+\\s(#(\\d{2})( \\S+){0,10}\\s){3,}", 0,
116 CrashExceptionCode::CRASH_LOG_ESTACKLOS },
117 { "Registers:", "", 0, CrashExceptionCode::CRASH_LOG_EREGLOS }, /* 32bit and 64bit system not same */
118 { "Other thread info:", "Tid:\\d+, Name:\\S+\\s(#(\\d{2})( \\S+){0,10}\\s){3,}", 0,
119 CrashExceptionCode::CRASH_LOG_ECHILDSTACK },
120 { "Memory near registers:", "", 0, CrashExceptionCode::CRASH_LOG_EMEMLOS },
121 { "FaultStack:", "", 0, CrashExceptionCode::CRASH_LOG_ESTACKMEMLOS },
122 { "Maps:", "", 0, CrashExceptionCode::CRASH_LOG_EMAPLOS },
123 };
124
125 int32_t keySize = sizeof(checkMap) / sizeof(checkMap[0]);
126 for (int i = 0; i < keySize; i++) {
127 checkMap[i].start = file.find(checkMap[i].key);
128 if ((checkMap[i].start == std::string::npos) ||
129 (checkMap[i].start + checkMap[i].key.length() + sizeof(char) >= file.length())) {
130 return checkMap[i].errCode;
131 }
132 }
133
134 for (int i = 0; i < keySize; i++) {
135 size_t end = (i == (keySize - 1) ? file.length() : checkMap[i + 1].start);
136 if (end - checkMap[i].start > MAX_FATAL_MSG_SIZE) {
137 end = checkMap[i].start + MAX_FATAL_MSG_SIZE;
138 }
139 std::string tmp = file.substr(checkMap[i].start, end - checkMap[i].start);
140 std::smatch result;
141 if (!std::regex_search(tmp, result, std::regex(checkMap[i].regx))) {
142 return checkMap[i].errCode;
143 }
144 }
145 return CrashExceptionCode::CRASH_ESUCCESS;
146 }
147
148 } // namespace HiviewDFX
149 } // namesapce OHOS
150