1 /**
2  * Copyright © 2019 IBM Corporation
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *     http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 #include "config.h"
17 
18 #include "config_main.h"
19 
20 #include "../bcd_time.hpp"
21 #include "../json_utils.hpp"
22 #include "../paths.hpp"
23 #include "../pel.hpp"
24 #include "../pel_types.hpp"
25 #include "../pel_values.hpp"
26 
27 #include <Python.h>
28 
29 #include <CLI/CLI.hpp>
30 #include <phosphor-logging/log.hpp>
31 
32 #include <bitset>
33 #include <fstream>
34 #include <iostream>
35 #include <regex>
36 #include <string>
37 
38 namespace fs = std::filesystem;
39 using namespace phosphor::logging;
40 using namespace openpower::pels;
41 namespace message = openpower::pels::message;
42 namespace pv = openpower::pels::pel_values;
43 
44 const uint8_t critSysTermSeverity = 0x51;
45 
46 using PELFunc = std::function<void(const PEL&, bool hexDump)>;
47 message::Registry registry(getPELReadOnlyDataPath() / message::registryFileName,
48                            false);
49 namespace service
50 {
51 constexpr auto logging = "xyz.openbmc_project.Logging";
52 } // namespace service
53 
54 namespace interface
55 {
56 constexpr auto deleteObj = "xyz.openbmc_project.Object.Delete";
57 constexpr auto deleteAll = "xyz.openbmc_project.Collection.DeleteAll";
58 } // namespace interface
59 
60 namespace object_path
61 {
62 constexpr auto logEntry = "/xyz/openbmc_project/logging/entry/";
63 constexpr auto logging = "/xyz/openbmc_project/logging";
64 } // namespace object_path
65 
66 std::string pelLogDir()
67 {
68     return std::string(EXTENSION_PERSIST_DIR) + "/pels/logs";
69 }
70 
71 /**
72  * @brief helper function to get PEL commit timestamp from file name
73  * @retrun uint64_t - PEL commit timestamp
74  * @param[in] std::string - file name
75  */
76 uint64_t fileNameToTimestamp(const std::string& fileName)
77 {
78     std::string token = fileName.substr(0, fileName.find("_"));
79     uint64_t bcdTime = 0;
80     if (token.length() >= 14)
81     {
82         int i = 0;
83 
84         try
85         {
86             auto tmp = std::stoul(token.substr(i, 2), 0, 16);
87             bcdTime |= (static_cast<uint64_t>(tmp) << 56);
88         }
89         catch (const std::exception& err)
90         {
91             std::cout << "Conversion failure: " << err.what() << std::endl;
92         }
93         i += 2;
94         try
95         {
96             auto tmp = std::stoul(token.substr(i, 2), 0, 16);
97             bcdTime |= (static_cast<uint64_t>(tmp) << 48);
98         }
99         catch (const std::exception& err)
100         {
101             std::cout << "Conversion failure: " << err.what() << std::endl;
102         }
103         i += 2;
104         try
105         {
106             auto tmp = std::stoul(token.substr(i, 2), 0, 16);
107             bcdTime |= (static_cast<uint64_t>(tmp) << 40);
108         }
109         catch (const std::exception& err)
110         {
111             std::cout << "Conversion failure: " << err.what() << std::endl;
112         }
113         i += 2;
114         try
115         {
116             auto tmp = std::stoul(token.substr(i, 2), 0, 16);
117             bcdTime |= (static_cast<uint64_t>(tmp) << 32);
118         }
119         catch (const std::exception& err)
120         {
121             std::cout << "Conversion failure: " << err.what() << std::endl;
122         }
123         i += 2;
124         try
125         {
126             auto tmp = std::stoul(token.substr(i, 2), 0, 16);
127             bcdTime |= (tmp << 24);
128         }
129         catch (const std::exception& err)
130         {
131             std::cout << "Conversion failure: " << err.what() << std::endl;
132         }
133         i += 2;
134         try
135         {
136             auto tmp = std::stoul(token.substr(i, 2), 0, 16);
137             bcdTime |= (tmp << 16);
138         }
139         catch (const std::exception& err)
140         {
141             std::cout << "Conversion failure: " << err.what() << std::endl;
142         }
143         i += 2;
144         try
145         {
146             auto tmp = std::stoul(token.substr(i, 2), 0, 16);
147             bcdTime |= (tmp << 8);
148         }
149         catch (const std::exception& err)
150         {
151             std::cout << "Conversion failure: " << err.what() << std::endl;
152         }
153         i += 2;
154         try
155         {
156             auto tmp = std::stoul(token.substr(i, 2), 0, 16);
157             bcdTime |= tmp;
158         }
159         catch (const std::exception& err)
160         {
161             std::cout << "Conversion failure: " << err.what() << std::endl;
162         }
163     }
164     return bcdTime;
165 }
166 
167 /**
168  * @brief helper function to get PEL id from file name
169  * @retrun uint32_t - PEL id
170  * @param[in] std::string - file name
171  */
172 uint32_t fileNameToPELId(const std::string& fileName)
173 {
174     uint32_t num = 0;
175     try
176     {
177         num = std::stoul(fileName.substr(fileName.find("_") + 1), 0, 16);
178     }
179     catch (const std::exception& err)
180     {
181         std::cout << "Conversion failure: " << err.what() << std::endl;
182     }
183     return num;
184 }
185 
186 /**
187  * @brief Check if the string ends with the PEL ID string passed in
188  * @param[in] str - string to check for PEL ID
189  * @param[in] pelID - PEL id string
190  *
191  * @return bool - true with suffix matches
192  */
193 bool endsWithPelID(const std::string& str, const std::string& pelID)
194 {
195     constexpr size_t pelIDSize = 8;
196 
197     if (pelID.size() != pelIDSize)
198     {
199         return false;
200     }
201 
202     size_t slen = str.size(), elen = pelID.size();
203     if (slen < elen)
204         return false;
205     while (elen)
206     {
207         if (str[--slen] != pelID[--elen])
208             return false;
209     }
210     return true;
211 }
212 
213 /**
214  * @brief get data form raw PEL file.
215  * @param[in] std::string Name of file with raw PEL
216  * @return std::vector<uint8_t> char vector read from raw PEL file.
217  */
218 std::vector<uint8_t> getFileData(const std::string& name)
219 {
220     std::ifstream file(name, std::ifstream::in);
221     if (file.good())
222     {
223         std::vector<uint8_t> data{std::istreambuf_iterator<char>(file),
224                                   std::istreambuf_iterator<char>()};
225         return data;
226     }
227     else
228     {
229         return {};
230     }
231 }
232 
233 /**
234  * @brief Initialize Python interpreter and gather all UD parser modules under
235  *        the paths found in Python sys.path and the current user directory.
236  *        This is to prevent calling a non-existant module which causes Python
237  *        to print an import error message and breaking JSON output.
238  *
239  * @return std::vector<std::string> Vector of plugins found in filesystem
240  */
241 std::vector<std::string> getPlugins()
242 {
243     Py_Initialize();
244     std::vector<std::string> plugins;
245     std::vector<std::string> siteDirs;
246     std::array<std::string, 2> parserDirs = {"udparsers", "srcparsers"};
247     PyObject* pName = PyUnicode_FromString("sys");
248     PyObject* pModule = PyImport_Import(pName);
249     Py_XDECREF(pName);
250     PyObject* pDict = PyModule_GetDict(pModule);
251     Py_XDECREF(pModule);
252     PyObject* pResult = PyDict_GetItemString(pDict, "path");
253     PyObject* pValue = PyUnicode_FromString(".");
254     PyList_Append(pResult, pValue);
255     Py_XDECREF(pValue);
256     auto list_size = PyList_Size(pResult);
257     for (auto i = 0; i < list_size; i++)
258     {
259         PyObject* item = PyList_GetItem(pResult, i);
260         PyObject* pBytes = PyUnicode_AsEncodedString(item, "utf-8", "~E~");
261         const char* output = PyBytes_AS_STRING(pBytes);
262         Py_XDECREF(pBytes);
263         std::string tmpStr(output);
264         siteDirs.push_back(tmpStr);
265     }
266     for (const auto& dir : siteDirs)
267     {
268         for (const auto& parserDir : parserDirs)
269         {
270             if (fs::exists(dir + "/" + parserDir))
271             {
272                 for (const auto& entry :
273                      fs::directory_iterator(dir + "/" + parserDir))
274                 {
275                     if (entry.is_directory() and
276                         fs::exists(entry.path().string() + "/" +
277                                    entry.path().stem().string() + ".py"))
278                     {
279                         plugins.push_back(entry.path().stem());
280                     }
281                 }
282             }
283         }
284     }
285     return plugins;
286 }
287 
288 /**
289  * @brief Creates JSON string of a PEL entry if fullPEL is false or prints to
290  *        stdout the full PEL in JSON if fullPEL is true
291  * @param[in] itr - std::map iterator of <uint32_t, BCDTime>
292  * @param[in] hidden - Boolean to include hidden PELs
293  * @param[in] includeInfo - Boolean to include informational PELs
294  * @param[in] critSysTerm - Boolean to include critical error and system
295  * termination PELs
296  * @param[in] fullPEL - Boolean to print full JSON representation of PEL
297  * @param[in] foundPEL - Boolean to check if any PEL is present
298  * @param[in] scrubRegex - SRC regex object
299  * @param[in] plugins - Vector of strings of plugins found in filesystem
300  * @param[in] hexDump - Boolean to print hexdump of PEL instead of JSON
301  * @return std::string - JSON string of PEL entry (empty if fullPEL is true)
302  */
303 template <typename T>
304 std::string genPELJSON(T itr, bool hidden, bool includeInfo, bool critSysTerm,
305                        bool fullPEL, bool& foundPEL,
306                        const std::optional<std::regex>& scrubRegex,
307                        const std::vector<std::string>& plugins, bool hexDump,
308                        bool archive)
309 {
310     std::string val;
311     std::string listStr;
312     char name[51];
313     sprintf(name, "/%.2X%.2X%.2X%.2X%.2X%.2X%.2X%.2X_%.8X",
314             static_cast<uint8_t>((itr.second >> 56) & 0xFF),
315             static_cast<uint8_t>((itr.second >> 48) & 0xFF),
316             static_cast<uint8_t>((itr.second >> 40) & 0xFF),
317             static_cast<uint8_t>((itr.second >> 32) & 0xFF),
318             static_cast<uint8_t>((itr.second >> 24) & 0xFF),
319             static_cast<uint8_t>((itr.second >> 16) & 0xFF),
320             static_cast<uint8_t>((itr.second >> 8) & 0xFF),
321             static_cast<uint8_t>(itr.second & 0xFF), itr.first);
322 
323     auto fileName = (archive ? pelLogDir() + "/archive" : pelLogDir()) + name;
324     try
325     {
326         std::vector<uint8_t> data = getFileData(fileName);
327         if (data.empty())
328         {
329             log<level::ERR>("Empty PEL file",
330                             entry("FILENAME=%s", fileName.c_str()));
331             return listStr;
332         }
333         PEL pel{data};
334         if (!pel.valid())
335         {
336             return listStr;
337         }
338         if (!includeInfo && pel.userHeader().severity() == 0)
339         {
340             return listStr;
341         }
342         if (critSysTerm && pel.userHeader().severity() != critSysTermSeverity)
343         {
344             return listStr;
345         }
346         std::bitset<16> actionFlags{pel.userHeader().actionFlags()};
347         if (!hidden && actionFlags.test(hiddenFlagBit))
348         {
349             return listStr;
350         }
351         if (pel.primarySRC() && scrubRegex)
352         {
353             val = pel.primarySRC().value()->asciiString();
354             if (std::regex_search(trimEnd(val), scrubRegex.value(),
355                                   std::regex_constants::match_not_null))
356             {
357                 return listStr;
358             }
359         }
360         if (hexDump)
361         {
362             std::cout << dumpHex(std::data(pel.data()), pel.size(), 0, false)
363                       << std::endl;
364         }
365         else if (fullPEL)
366         {
367             if (!foundPEL)
368             {
369                 std::cout << "[\n";
370                 foundPEL = true;
371             }
372             else
373             {
374                 std::cout << ",\n\n";
375             }
376             pel.toJSON(registry, plugins);
377         }
378         else
379         {
380             // id
381             listStr += "    \"" +
382                        getNumberString("0x%X", pel.privateHeader().id()) +
383                        "\": {\n";
384             // ASCII
385             if (pel.primarySRC())
386             {
387                 val = pel.primarySRC().value()->asciiString();
388                 jsonInsert(listStr, "SRC", trimEnd(val), 2);
389 
390                 // Registry message
391                 auto regVal = pel.primarySRC().value()->getErrorDetails(
392                     registry, DetailLevel::message, true);
393                 if (regVal)
394                 {
395                     val = regVal.value();
396                     jsonInsert(listStr, "Message", val, 2);
397                 }
398             }
399             else
400             {
401                 jsonInsert(listStr, "SRC", "No SRC", 2);
402             }
403 
404             // platformid
405             jsonInsert(listStr, "PLID",
406                        getNumberString("0x%X", pel.privateHeader().plid()), 2);
407 
408             // creatorid
409             std::string creatorID =
410                 getNumberString("%c", pel.privateHeader().creatorID());
411             val = pv::creatorIDs.count(creatorID) ? pv::creatorIDs.at(creatorID)
412                                                   : "Unknown Creator ID";
413             jsonInsert(listStr, "CreatorID", val, 2);
414 
415             // subsystem
416             std::string subsystem = pv::getValue(pel.userHeader().subsystem(),
417                                                  pel_values::subsystemValues);
418             jsonInsert(listStr, "Subsystem", subsystem, 2);
419 
420             // commit time
421             char tmpValStr[50];
422             sprintf(tmpValStr, "%02X/%02X/%02X%02X %02X:%02X:%02X",
423                     pel.privateHeader().commitTimestamp().month,
424                     pel.privateHeader().commitTimestamp().day,
425                     pel.privateHeader().commitTimestamp().yearMSB,
426                     pel.privateHeader().commitTimestamp().yearLSB,
427                     pel.privateHeader().commitTimestamp().hour,
428                     pel.privateHeader().commitTimestamp().minutes,
429                     pel.privateHeader().commitTimestamp().seconds);
430             jsonInsert(listStr, "Commit Time", tmpValStr, 2);
431 
432             // severity
433             std::string severity = pv::getValue(pel.userHeader().severity(),
434                                                 pel_values::severityValues);
435             jsonInsert(listStr, "Sev", severity, 2);
436 
437             // compID
438             jsonInsert(
439                 listStr, "CompID",
440                 getComponentName(pel.privateHeader().header().componentID,
441                                  pel.privateHeader().creatorID()),
442                 2);
443 
444             auto found = listStr.rfind(",");
445             if (found != std::string::npos)
446             {
447                 listStr.replace(found, 1, "");
448                 listStr += "    },\n";
449             }
450             foundPEL = true;
451         }
452     }
453     catch (const std::exception& e)
454     {
455         log<level::ERR>("Hit exception while reading PEL File",
456                         entry("FILENAME=%s", fileName.c_str()),
457                         entry("ERROR=%s", e.what()));
458     }
459     return listStr;
460 }
461 
462 /**
463  * @brief Print a list of PELs or a JSON array of PELs
464  * @param[in] order - Boolean to print in reverse orser
465  * @param[in] hidden - Boolean to include hidden PELs
466  * @param[in] includeInfo - Boolean to include informational PELs
467  * @param[in] critSysTerm - Boolean to include critical error and system
468  * termination PELs
469  * @param[in] fullPEL - Boolean to print full PEL into a JSON array
470  * @param[in] scrubRegex - SRC regex object
471  * @param[in] hexDump - Boolean to print hexdump of PEL instead of JSON
472  */
473 void printPELs(bool order, bool hidden, bool includeInfo, bool critSysTerm,
474                bool fullPEL, const std::optional<std::regex>& scrubRegex,
475                bool hexDump, bool archive = false)
476 {
477     std::string listStr;
478     std::vector<std::pair<uint32_t, uint64_t>> PELs;
479     std::vector<std::string> plugins;
480     listStr = "{\n";
481     for (auto it = (archive ? fs::directory_iterator(pelLogDir() + "/archive")
482                             : fs::directory_iterator(pelLogDir()));
483          it != fs::directory_iterator(); ++it)
484     {
485         if (!fs::is_regular_file((*it).path()))
486         {
487             continue;
488         }
489         else
490         {
491             PELs.emplace_back(fileNameToPELId((*it).path().filename()),
492                               fileNameToTimestamp((*it).path().filename()));
493         }
494     }
495 
496     // Sort the pairs based on second time parameter
497     std::sort(PELs.begin(), PELs.end(),
498               [](const auto& left, const auto& right) {
499                   return left.second < right.second;
500               });
501 
502     bool foundPEL = false;
503 
504     if (fullPEL && !hexDump)
505     {
506         plugins = getPlugins();
507     }
508     auto buildJSON = [&listStr, &hidden, &includeInfo, &critSysTerm, &fullPEL,
509                       &foundPEL, &scrubRegex, &plugins, &hexDump,
510                       &archive](const auto& i) {
511         listStr += genPELJSON(i, hidden, includeInfo, critSysTerm, fullPEL,
512                               foundPEL, scrubRegex, plugins, hexDump, archive);
513     };
514     if (order)
515     {
516         std::for_each(PELs.rbegin(), PELs.rend(), buildJSON);
517     }
518     else
519     {
520         std::for_each(PELs.begin(), PELs.end(), buildJSON);
521     }
522     if (hexDump)
523     {
524         return;
525     }
526     if (foundPEL)
527     {
528         if (fullPEL)
529         {
530             std::cout << "]" << std::endl;
531         }
532         else
533         {
534             std::size_t found;
535             found = listStr.rfind(",");
536             if (found != std::string::npos)
537             {
538                 listStr.replace(found, 1, "");
539                 listStr += "}\n";
540                 printf("%s", listStr.c_str());
541             }
542         }
543     }
544     else
545     {
546         std::string emptyJSON = fullPEL ? "[]" : "{}";
547         std::cout << emptyJSON << std::endl;
548     }
549 }
550 
551 /**
552  * @brief Calls the function passed in on the PEL with the ID
553  *        passed in.
554  *
555  * @param[in] id - The string version of the PEL or BMC Log ID, either with or
556  *                 without the 0x prefix.
557  * @param[in] func - The std::function<void(const PEL&, bool hexDump)> function
558  *                   to run.
559  * @param[in] useBMC - if true, search by BMC Log ID, else search by PEL ID
560  * @param[in] hexDump - Boolean to print hexdump of PEL instead of JSON
561  */
562 void callFunctionOnPEL(const std::string& id, const PELFunc& func,
563                        bool useBMC = false, bool hexDump = false,
564                        bool archive = false)
565 {
566     std::string pelID{id};
567     if (!useBMC)
568     {
569         std::transform(pelID.begin(), pelID.end(), pelID.begin(), toupper);
570 
571         if (pelID.starts_with("0X"))
572         {
573             pelID.erase(0, 2);
574         }
575     }
576 
577     bool found = false;
578 
579     for (auto it = (archive ? fs::directory_iterator(pelLogDir() + "/archive")
580                             : fs::directory_iterator(pelLogDir()));
581          it != fs::directory_iterator(); ++it)
582     {
583         // The PEL ID is part of the filename, so use that to find the PEL if
584         // "useBMC" is set to false, otherwise we have to search within the PEL
585 
586         if (!fs::is_regular_file((*it).path()))
587         {
588             continue;
589         }
590 
591         if ((endsWithPelID((*it).path(), pelID) && !useBMC) || useBMC)
592         {
593             auto data = getFileData((*it).path());
594             if (!data.empty())
595             {
596                 PEL pel{data};
597                 if (!useBMC ||
598                     (useBMC && pel.obmcLogID() == std::stoul(id, nullptr, 0)))
599                 {
600                     found = true;
601                     try
602                     {
603                         func(pel, hexDump);
604                         break;
605                     }
606                     catch (const std::exception& e)
607                     {
608                         std::cerr << " Internal function threw an exception: "
609                                   << e.what() << "\n";
610                         exit(1);
611                     }
612                 }
613             }
614             else
615             {
616                 std::cerr << "Could not read PEL file\n";
617                 exit(1);
618             }
619         }
620     }
621 
622     if (!found)
623     {
624         std::cerr << "PEL not found\n";
625         exit(1);
626     }
627 }
628 
629 /**
630  * @brief Delete a PEL file.
631  *
632  * @param[in] id - The PEL ID to delete.
633  */
634 void deletePEL(const std::string& id)
635 {
636     std::string pelID{id};
637 
638     std::transform(pelID.begin(), pelID.end(), pelID.begin(), toupper);
639 
640     if (pelID.starts_with("0X"))
641     {
642         pelID.erase(0, 2);
643     }
644 
645     for (auto it = fs::directory_iterator(pelLogDir());
646          it != fs::directory_iterator(); ++it)
647     {
648         if (endsWithPelID((*it).path(), pelID))
649         {
650             fs::remove((*it).path());
651         }
652     }
653 }
654 
655 /**
656  * @brief Delete all PEL files.
657  */
658 void deleteAllPELs()
659 {
660     log<level::INFO>("peltool deleting all event logs");
661 
662     for (const auto& entry : fs::directory_iterator(pelLogDir()))
663     {
664         if (!fs::is_regular_file(entry.path()))
665         {
666             continue;
667         }
668         fs::remove(entry.path());
669     }
670 }
671 
672 /**
673  * @brief Display a single PEL
674  *
675  * @param[in] pel - the PEL to display
676  * @param[in] hexDump - Boolean to print hexdump of PEL instead of JSON
677  */
678 void displayPEL(const PEL& pel, bool hexDump)
679 {
680     if (pel.valid())
681     {
682         if (hexDump)
683         {
684             std::string dstr = dumpHex(std::data(pel.data()), pel.size(), 0,
685                                        false);
686             std::cout << dstr << std::endl;
687         }
688         else
689         {
690             auto plugins = getPlugins();
691             pel.toJSON(registry, plugins);
692         }
693     }
694     else
695     {
696         std::cerr << "PEL was malformed\n";
697         exit(1);
698     }
699 }
700 
701 /**
702  * @brief Print number of PELs
703  * @param[in] hidden - Bool to include hidden logs
704  * @param[in] includeInfo - Bool to include informational logs
705  * @param[in] critSysTerm - Bool to include CritSysTerm
706  * @param[in] scrubRegex - SRC regex object
707  */
708 void printPELCount(bool hidden, bool includeInfo, bool critSysTerm,
709                    const std::optional<std::regex>& scrubRegex)
710 {
711     std::size_t count = 0;
712 
713     for (auto it = fs::directory_iterator(pelLogDir());
714          it != fs::directory_iterator(); ++it)
715     {
716         if (!fs::is_regular_file((*it).path()))
717         {
718             continue;
719         }
720         std::vector<uint8_t> data = getFileData((*it).path());
721         if (data.empty())
722         {
723             continue;
724         }
725         PEL pel{data};
726         if (!pel.valid())
727         {
728             continue;
729         }
730         if (!includeInfo && pel.userHeader().severity() == 0)
731         {
732             continue;
733         }
734         if (critSysTerm && pel.userHeader().severity() != critSysTermSeverity)
735         {
736             continue;
737         }
738         std::bitset<16> actionFlags{pel.userHeader().actionFlags()};
739         if (!hidden && actionFlags.test(hiddenFlagBit))
740         {
741             continue;
742         }
743         if (pel.primarySRC() && scrubRegex)
744         {
745             std::string val = pel.primarySRC().value()->asciiString();
746             if (std::regex_search(trimEnd(val), scrubRegex.value(),
747                                   std::regex_constants::match_not_null))
748             {
749                 continue;
750             }
751         }
752         count++;
753     }
754     std::cout << "{\n"
755               << "    \"Number of PELs found\": "
756               << getNumberString("%d", count) << "\n}\n";
757 }
758 
759 /**
760  * @brief Generate regex pattern object from file contents
761  * @param[in] scrubFile - File containing regex pattern
762  * @return std::regex - SRC regex object
763  */
764 std::regex genRegex(std::string& scrubFile)
765 {
766     std::string pattern;
767     std::ifstream contents(scrubFile);
768     if (contents.fail())
769     {
770         std::cerr << "Can't open \"" << scrubFile << "\"\n";
771         exit(1);
772     }
773     std::string line;
774     while (std::getline(contents, line))
775     {
776         if (!line.empty())
777         {
778             pattern.append(line + "|");
779         }
780     }
781     try
782     {
783         std::regex scrubRegex(pattern, std::regex::icase);
784         return scrubRegex;
785     }
786     catch (const std::regex_error& e)
787     {
788         if (e.code() == std::regex_constants::error_collate)
789             std::cerr << "Invalid collating element request\n";
790         else if (e.code() == std::regex_constants::error_ctype)
791             std::cerr << "Invalid character class\n";
792         else if (e.code() == std::regex_constants::error_escape)
793             std::cerr << "Invalid escape character or trailing escape\n";
794         else if (e.code() == std::regex_constants::error_backref)
795             std::cerr << "Invalid back reference\n";
796         else if (e.code() == std::regex_constants::error_brack)
797             std::cerr << "Mismatched bracket ([ or ])\n";
798         else if (e.code() == std::regex_constants::error_paren)
799         {
800             // to catch return code error_badrepeat when error_paren is retured
801             // instead
802             size_t pos = pattern.find_first_of("*+?{");
803             while (pos != std::string::npos)
804             {
805                 if (pos == 0 || pattern.substr(pos - 1, 1) == "|")
806                 {
807                     std::cerr
808                         << "A repetition character (*, ?, +, or {) was not "
809                            "preceded by a valid regular expression\n";
810                     exit(1);
811                 }
812                 pos = pattern.find_first_of("*+?{", pos + 1);
813             }
814             std::cerr << "Mismatched parentheses (( or ))\n";
815         }
816         else if (e.code() == std::regex_constants::error_brace)
817             std::cerr << "Mismatched brace ({ or })\n";
818         else if (e.code() == std::regex_constants::error_badbrace)
819             std::cerr << "Invalid range inside a { }\n";
820         else if (e.code() == std::regex_constants::error_range)
821             std::cerr << "Invalid character range (e.g., [z-a])\n";
822         else if (e.code() == std::regex_constants::error_space)
823             std::cerr << "Insufficient memory to handle regular expression\n";
824         else if (e.code() == std::regex_constants::error_badrepeat)
825             std::cerr << "A repetition character (*, ?, +, or {) was not "
826                          "preceded by a valid regular expression\n";
827         else if (e.code() == std::regex_constants::error_complexity)
828             std::cerr << "The requested match is too complex\n";
829         else if (e.code() == std::regex_constants::error_stack)
830             std::cerr << "Insufficient memory to evaluate a match\n";
831         exit(1);
832     }
833 }
834 
835 static void exitWithError(const std::string& help, const char* err)
836 {
837     std::cerr << "ERROR: " << err << std::endl << help << std::endl;
838     exit(-1);
839 }
840 
841 int main(int argc, char** argv)
842 {
843     CLI::App app{"OpenBMC PEL Tool"};
844     std::string fileName;
845     std::string idPEL;
846     std::string bmcId;
847     std::string idToDelete;
848     std::string scrubFile;
849     std::optional<std::regex> scrubRegex;
850     bool listPEL = false;
851     bool listPELDescOrd = false;
852     bool hidden = false;
853     bool includeInfo = false;
854     bool critSysTerm = false;
855     bool deleteAll = false;
856     bool showPELCount = false;
857     bool fullPEL = false;
858     bool hexDump = false;
859     bool archive = false;
860 
861     app.set_help_flag("--help", "Print this help message and exit");
862     app.add_option("--file", fileName, "Display a PEL using its Raw PEL file");
863     app.add_option("-i, --id", idPEL, "Display a PEL based on its ID");
864     app.add_option("--bmc-id", bmcId,
865                    "Display a PEL based on its BMC Event ID");
866     app.add_flag("-a", fullPEL, "Display all PELs");
867     app.add_flag("-l", listPEL, "List PELs");
868     app.add_flag("-n", showPELCount, "Show number of PELs");
869     app.add_flag("-r", listPELDescOrd, "Reverse order of output");
870     app.add_flag("-h", hidden, "Include hidden PELs");
871     app.add_flag("-f,--info", includeInfo, "Include informational PELs");
872     app.add_flag("-t, --termination", critSysTerm,
873                  "List only critical system terminating PELs");
874     app.add_option("-d, --delete", idToDelete, "Delete a PEL based on its ID");
875     app.add_flag("-D, --delete-all", deleteAll, "Delete all PELs");
876     app.add_option("-s, --scrub", scrubFile,
877                    "File containing SRC regular expressions to ignore");
878     app.add_flag("-x", hexDump, "Display PEL(s) in hexdump instead of JSON");
879     app.add_flag("--archive", archive, "List or display archived PELs");
880 
881     CLI11_PARSE(app, argc, argv);
882 
883     if (!fileName.empty())
884     {
885         std::vector<uint8_t> data = getFileData(fileName);
886         if (!data.empty())
887         {
888             PEL pel{data};
889             if (hexDump)
890             {
891                 std::string dstr = dumpHex(std::data(pel.data()), pel.size(), 0,
892                                            false);
893                 std::cout << dstr << std::endl;
894             }
895             else
896             {
897                 auto plugins = getPlugins();
898                 pel.toJSON(registry, plugins);
899             }
900         }
901         else
902         {
903             exitWithError(app.help("", CLI::AppFormatMode::All),
904                           "Raw PEL file can't be read.");
905         }
906     }
907     else if (!idPEL.empty())
908     {
909         callFunctionOnPEL(idPEL, displayPEL, false, hexDump, archive);
910     }
911     else if (!bmcId.empty())
912     {
913         callFunctionOnPEL(bmcId, displayPEL, true, hexDump, archive);
914     }
915     else if (fullPEL || listPEL)
916     {
917         if (!scrubFile.empty())
918         {
919             scrubRegex = genRegex(scrubFile);
920         }
921         printPELs(listPELDescOrd, hidden, includeInfo, critSysTerm, fullPEL,
922                   scrubRegex, hexDump, archive);
923     }
924     else if (showPELCount)
925     {
926         if (!scrubFile.empty())
927         {
928             scrubRegex = genRegex(scrubFile);
929         }
930         printPELCount(hidden, includeInfo, critSysTerm, scrubRegex);
931     }
932     else if (!idToDelete.empty())
933     {
934         deletePEL(idToDelete);
935     }
936     else if (deleteAll)
937     {
938         deleteAllPELs();
939     }
940     else
941     {
942         std::cout << app.help("", CLI::AppFormatMode::All) << std::endl;
943     }
944     Py_Finalize();
945     return 0;
946 }
947