xref: /openbmc/pldm/common/utils.cpp (revision 7eab4576)
1 #include "utils.hpp"
2 
3 #include <libpldm/pdr.h>
4 #include <libpldm/pldm_types.h>
5 
6 #include <phosphor-logging/lg2.hpp>
7 #include <xyz/openbmc_project/Common/error.hpp>
8 
9 #include <algorithm>
10 #include <array>
11 #include <cctype>
12 #include <ctime>
13 #include <fstream>
14 #include <iostream>
15 #include <map>
16 #include <stdexcept>
17 #include <string>
18 #include <vector>
19 
20 PHOSPHOR_LOG2_USING;
21 
22 namespace pldm
23 {
24 namespace utils
25 {
26 constexpr auto mapperBusName = "xyz.openbmc_project.ObjectMapper";
27 constexpr auto mapperPath = "/xyz/openbmc_project/object_mapper";
28 constexpr auto mapperInterface = "xyz.openbmc_project.ObjectMapper";
29 
30 Entities getParentEntites(const EntityAssociations& entityAssoc)
31 {
32     Entities parents{};
33     for (const auto& et : entityAssoc)
34     {
35         parents.push_back(et[0]);
36     }
37 
38     bool found = false;
39     for (auto it = parents.begin(); it != parents.end();
40          it = found ? parents.erase(it) : std::next(it))
41     {
42         uint16_t parent_contained_id =
43             pldm_entity_node_get_remote_container_id(*it);
44         found = false;
45         for (const auto& evs : entityAssoc)
46         {
47             for (size_t i = 1; i < evs.size() && !found; i++)
48             {
49                 uint16_t node_contained_id =
50                     pldm_entity_node_get_remote_container_id(evs[i]);
51 
52                 pldm_entity parent_entity = pldm_entity_extract(*it);
53                 pldm_entity node_entity = pldm_entity_extract(evs[i]);
54 
55                 if (node_entity.entity_type == parent_entity.entity_type &&
56                     node_entity.entity_instance_num ==
57                         parent_entity.entity_instance_num &&
58                     node_contained_id == parent_contained_id)
59                 {
60                     found = true;
61                 }
62             }
63             if (found)
64             {
65                 break;
66             }
67         }
68     }
69 
70     return parents;
71 }
72 
73 void addObjectPathEntityAssociations(const EntityAssociations& entityAssoc,
74                                      pldm_entity_node* entity,
75                                      const fs::path& path,
76                                      ObjectPathMaps& objPathMap)
77 {
78     if (entity == nullptr)
79     {
80         return;
81     }
82 
83     bool found = false;
84     pldm_entity node_entity = pldm_entity_extract(entity);
85     if (!entityMaps.contains(node_entity.entity_type))
86     {
87         lg2::info(
88             "{ENTITY_TYPE} Entity fetched from remote PLDM terminal does not exist.",
89             "ENTITY_TYPE", (int)node_entity.entity_type);
90         return;
91     }
92 
93     std::string entityName = entityMaps.at(node_entity.entity_type);
94     for (const auto& ev : entityAssoc)
95     {
96         pldm_entity ev_entity = pldm_entity_extract(ev[0]);
97         if (ev_entity.entity_instance_num == node_entity.entity_instance_num &&
98             ev_entity.entity_type == node_entity.entity_type)
99         {
100             uint16_t node_contained_id =
101                 pldm_entity_node_get_remote_container_id(ev[0]);
102             uint16_t entity_contained_id =
103                 pldm_entity_node_get_remote_container_id(entity);
104 
105             if (node_contained_id != entity_contained_id)
106             {
107                 continue;
108             }
109 
110             fs::path p = path / fs::path{entityName +
111                                          std::to_string(
112                                              node_entity.entity_instance_num)};
113             std::string entity_path = p.string();
114             // If the entity obtained from the remote PLDM terminal is not in
115             // the MAP, or there is no auxiliary name PDR, add it directly.
116             // Otherwise, check whether the DBus service of entity_path exists,
117             // and overwrite the entity if it does not exist.
118             if (!objPathMap.contains(entity_path))
119             {
120                 objPathMap[entity_path] = entity;
121             }
122             else
123             {
124                 try
125                 {
126                     pldm::utils::DBusHandler().getService(entity_path.c_str(),
127                                                           nullptr);
128                 }
129                 catch (const std::exception& e)
130                 {
131                     objPathMap[entity_path] = entity;
132                 }
133             }
134 
135             for (size_t i = 1; i < ev.size(); i++)
136             {
137                 addObjectPathEntityAssociations(entityAssoc, ev[i], p,
138                                                 objPathMap);
139             }
140             found = true;
141         }
142     }
143 
144     if (!found)
145     {
146         std::string dbusPath =
147             path / fs::path{entityName +
148                             std::to_string(node_entity.entity_instance_num)};
149 
150         try
151         {
152             pldm::utils::DBusHandler().getService(dbusPath.c_str(), nullptr);
153         }
154         catch (const std::exception& e)
155         {
156             objPathMap[dbusPath] = entity;
157         }
158     }
159 }
160 
161 void updateEntityAssociation(const EntityAssociations& entityAssoc,
162                              pldm_entity_association_tree* entityTree,
163                              ObjectPathMaps& objPathMap)
164 {
165     std::vector<pldm_entity_node*> parentsEntity =
166         getParentEntites(entityAssoc);
167     for (const auto& entity : parentsEntity)
168     {
169         fs::path path{"/xyz/openbmc_project/inventory"};
170         std::deque<std::string> paths{};
171         pldm_entity node_entity = pldm_entity_extract(entity);
172         auto node = pldm_entity_association_tree_find_with_locality(
173             entityTree, &node_entity, false);
174         if (!node)
175         {
176             continue;
177         }
178 
179         bool found = true;
180         while (node)
181         {
182             if (!pldm_entity_is_exist_parent(node))
183             {
184                 break;
185             }
186 
187             pldm_entity parent = pldm_entity_get_parent(node);
188             try
189             {
190                 paths.push_back(entityMaps.at(parent.entity_type) +
191                                 std::to_string(parent.entity_instance_num));
192             }
193             catch (const std::exception& e)
194             {
195                 lg2::error(
196                     "Parent entity not found in the entityMaps, type: {ENTITY_TYPE}, num: {NUM}, e: {ERROR}",
197                     "ENTITY_TYPE", (int)parent.entity_type, "NUM",
198                     (int)parent.entity_instance_num, "ERROR", e);
199                 found = false;
200                 break;
201             }
202 
203             node = pldm_entity_association_tree_find_with_locality(
204                 entityTree, &parent, false);
205         }
206 
207         if (!found)
208         {
209             continue;
210         }
211 
212         while (!paths.empty())
213         {
214             path = path / fs::path{paths.back()};
215             paths.pop_back();
216         }
217 
218         addObjectPathEntityAssociations(entityAssoc, entity, path, objPathMap);
219     }
220 }
221 
222 std::vector<std::vector<uint8_t>> findStateEffecterPDR(uint8_t /*tid*/,
223                                                        uint16_t entityID,
224                                                        uint16_t stateSetId,
225                                                        const pldm_pdr* repo)
226 {
227     uint8_t* outData = nullptr;
228     uint32_t size{};
229     const pldm_pdr_record* record{};
230     std::vector<std::vector<uint8_t>> pdrs;
231     try
232     {
233         do
234         {
235             record = pldm_pdr_find_record_by_type(repo, PLDM_STATE_EFFECTER_PDR,
236                                                   record, &outData, &size);
237             if (record)
238             {
239                 auto pdr = reinterpret_cast<pldm_state_effecter_pdr*>(outData);
240                 auto compositeEffecterCount = pdr->composite_effecter_count;
241                 auto possible_states_start = pdr->possible_states;
242 
243                 for (auto effecters = 0x00; effecters < compositeEffecterCount;
244                      effecters++)
245                 {
246                     auto possibleStates =
247                         reinterpret_cast<state_effecter_possible_states*>(
248                             possible_states_start);
249                     auto setId = possibleStates->state_set_id;
250                     auto possibleStateSize =
251                         possibleStates->possible_states_size;
252 
253                     if (pdr->entity_type == entityID && setId == stateSetId)
254                     {
255                         std::vector<uint8_t> effecter_pdr(&outData[0],
256                                                           &outData[size]);
257                         pdrs.emplace_back(std::move(effecter_pdr));
258                         break;
259                     }
260                     possible_states_start += possibleStateSize + sizeof(setId) +
261                                              sizeof(possibleStateSize);
262                 }
263             }
264 
265         } while (record);
266     }
267     catch (const std::exception& e)
268     {
269         error(" Failed to obtain a record. ERROR = {ERR_EXCEP}", "ERR_EXCEP",
270               e.what());
271     }
272 
273     return pdrs;
274 }
275 
276 std::vector<std::vector<uint8_t>> findStateSensorPDR(uint8_t /*tid*/,
277                                                      uint16_t entityID,
278                                                      uint16_t stateSetId,
279                                                      const pldm_pdr* repo)
280 {
281     uint8_t* outData = nullptr;
282     uint32_t size{};
283     const pldm_pdr_record* record{};
284     std::vector<std::vector<uint8_t>> pdrs;
285     try
286     {
287         do
288         {
289             record = pldm_pdr_find_record_by_type(repo, PLDM_STATE_SENSOR_PDR,
290                                                   record, &outData, &size);
291             if (record)
292             {
293                 auto pdr = reinterpret_cast<pldm_state_sensor_pdr*>(outData);
294                 auto compositeSensorCount = pdr->composite_sensor_count;
295                 auto possible_states_start = pdr->possible_states;
296 
297                 for (auto sensors = 0x00; sensors < compositeSensorCount;
298                      sensors++)
299                 {
300                     auto possibleStates =
301                         reinterpret_cast<state_sensor_possible_states*>(
302                             possible_states_start);
303                     auto setId = possibleStates->state_set_id;
304                     auto possibleStateSize =
305                         possibleStates->possible_states_size;
306 
307                     if (pdr->entity_type == entityID && setId == stateSetId)
308                     {
309                         std::vector<uint8_t> sensor_pdr(&outData[0],
310                                                         &outData[size]);
311                         pdrs.emplace_back(std::move(sensor_pdr));
312                         break;
313                     }
314                     possible_states_start += possibleStateSize + sizeof(setId) +
315                                              sizeof(possibleStateSize);
316                 }
317             }
318 
319         } while (record);
320     }
321     catch (const std::exception& e)
322     {
323         error(" Failed to obtain a record. ERROR = {ERR_EXCEP}", "ERR_EXCEP",
324               e.what());
325     }
326 
327     return pdrs;
328 }
329 
330 uint8_t readHostEID()
331 {
332     uint8_t eid{};
333     std::ifstream eidFile{HOST_EID_PATH};
334     if (!eidFile.good())
335     {
336         error("Could not open host EID file: {HOST_PATH}", "HOST_PATH",
337               static_cast<std::string>(HOST_EID_PATH));
338     }
339     else
340     {
341         std::string eidStr;
342         eidFile >> eidStr;
343         if (!eidStr.empty())
344         {
345             eid = atoi(eidStr.c_str());
346         }
347         else
348         {
349             error("Host EID file was empty");
350         }
351     }
352 
353     return eid;
354 }
355 
356 uint8_t getNumPadBytes(uint32_t data)
357 {
358     uint8_t pad;
359     pad = ((data % 4) ? (4 - data % 4) : 0);
360     return pad;
361 } // end getNumPadBytes
362 
363 bool uintToDate(uint64_t data, uint16_t* year, uint8_t* month, uint8_t* day,
364                 uint8_t* hour, uint8_t* min, uint8_t* sec)
365 {
366     constexpr uint64_t max_data = 29991231115959;
367     constexpr uint64_t min_data = 19700101000000;
368     if (data < min_data || data > max_data)
369     {
370         return false;
371     }
372 
373     *year = data / 10000000000;
374     data = data % 10000000000;
375     *month = data / 100000000;
376     data = data % 100000000;
377     *day = data / 1000000;
378     data = data % 1000000;
379     *hour = data / 10000;
380     data = data % 10000;
381     *min = data / 100;
382     *sec = data % 100;
383 
384     return true;
385 }
386 
387 std::optional<std::vector<set_effecter_state_field>>
388     parseEffecterData(const std::vector<uint8_t>& effecterData,
389                       uint8_t effecterCount)
390 {
391     std::vector<set_effecter_state_field> stateField;
392 
393     if (effecterData.size() != effecterCount * 2)
394     {
395         return std::nullopt;
396     }
397 
398     for (uint8_t i = 0; i < effecterCount; ++i)
399     {
400         uint8_t set_request = effecterData[i * 2] == PLDM_REQUEST_SET
401                                   ? PLDM_REQUEST_SET
402                                   : PLDM_NO_CHANGE;
403         set_effecter_state_field filed{set_request, effecterData[i * 2 + 1]};
404         stateField.emplace_back(std::move(filed));
405     }
406 
407     return std::make_optional(std::move(stateField));
408 }
409 
410 std::string DBusHandler::getService(const char* path,
411                                     const char* interface) const
412 {
413     using DbusInterfaceList = std::vector<std::string>;
414     std::map<std::string, std::vector<std::string>> mapperResponse;
415     auto& bus = DBusHandler::getBus();
416 
417     auto mapper = bus.new_method_call(mapperBusName, mapperPath,
418                                       mapperInterface, "GetObject");
419 
420     if (interface)
421     {
422         mapper.append(path, DbusInterfaceList({interface}));
423     }
424     else
425     {
426         mapper.append(path, DbusInterfaceList({}));
427     }
428 
429     auto mapperResponseMsg = bus.call(mapper, dbusTimeout);
430     mapperResponseMsg.read(mapperResponse);
431     return mapperResponse.begin()->first;
432 }
433 
434 GetSubTreeResponse
435     DBusHandler::getSubtree(const std::string& searchPath, int depth,
436                             const std::vector<std::string>& ifaceList) const
437 {
438     auto& bus = pldm::utils::DBusHandler::getBus();
439     auto method = bus.new_method_call(mapperBusName, mapperPath,
440                                       mapperInterface, "GetSubTree");
441     method.append(searchPath, depth, ifaceList);
442     auto reply = bus.call(method, dbusTimeout);
443     GetSubTreeResponse response;
444     reply.read(response);
445     return response;
446 }
447 
448 void reportError(const char* errorMsg)
449 {
450     static constexpr auto logObjPath = "/xyz/openbmc_project/logging";
451     static constexpr auto logInterface = "xyz.openbmc_project.Logging.Create";
452 
453     auto& bus = pldm::utils::DBusHandler::getBus();
454 
455     try
456     {
457         auto service = DBusHandler().getService(logObjPath, logInterface);
458         using namespace sdbusplus::xyz::openbmc_project::Logging::server;
459         auto severity =
460             sdbusplus::xyz::openbmc_project::Logging::server::convertForMessage(
461                 sdbusplus::xyz::openbmc_project::Logging::server::Entry::Level::
462                     Error);
463         auto method = bus.new_method_call(service.c_str(), logObjPath,
464                                           logInterface, "Create");
465         std::map<std::string, std::string> addlData{};
466         method.append(errorMsg, severity, addlData);
467         bus.call_noreply(method, dbusTimeout);
468     }
469     catch (const std::exception& e)
470     {
471         error(
472             "failed to make a d-bus call to create error log, ERROR={ERR_EXCEP}",
473             "ERR_EXCEP", e.what());
474     }
475 }
476 
477 void DBusHandler::setDbusProperty(const DBusMapping& dBusMap,
478                                   const PropertyValue& value) const
479 {
480     auto setDbusValue = [&dBusMap, this](const auto& variant) {
481         auto& bus = getBus();
482         auto service = getService(dBusMap.objectPath.c_str(),
483                                   dBusMap.interface.c_str());
484         auto method = bus.new_method_call(
485             service.c_str(), dBusMap.objectPath.c_str(), dbusProperties, "Set");
486         method.append(dBusMap.interface.c_str(), dBusMap.propertyName.c_str(),
487                       variant);
488         bus.call_noreply(method, dbusTimeout);
489     };
490 
491     if (dBusMap.propertyType == "uint8_t")
492     {
493         std::variant<uint8_t> v = std::get<uint8_t>(value);
494         setDbusValue(v);
495     }
496     else if (dBusMap.propertyType == "bool")
497     {
498         std::variant<bool> v = std::get<bool>(value);
499         setDbusValue(v);
500     }
501     else if (dBusMap.propertyType == "int16_t")
502     {
503         std::variant<int16_t> v = std::get<int16_t>(value);
504         setDbusValue(v);
505     }
506     else if (dBusMap.propertyType == "uint16_t")
507     {
508         std::variant<uint16_t> v = std::get<uint16_t>(value);
509         setDbusValue(v);
510     }
511     else if (dBusMap.propertyType == "int32_t")
512     {
513         std::variant<int32_t> v = std::get<int32_t>(value);
514         setDbusValue(v);
515     }
516     else if (dBusMap.propertyType == "uint32_t")
517     {
518         std::variant<uint32_t> v = std::get<uint32_t>(value);
519         setDbusValue(v);
520     }
521     else if (dBusMap.propertyType == "int64_t")
522     {
523         std::variant<int64_t> v = std::get<int64_t>(value);
524         setDbusValue(v);
525     }
526     else if (dBusMap.propertyType == "uint64_t")
527     {
528         std::variant<uint64_t> v = std::get<uint64_t>(value);
529         setDbusValue(v);
530     }
531     else if (dBusMap.propertyType == "double")
532     {
533         std::variant<double> v = std::get<double>(value);
534         setDbusValue(v);
535     }
536     else if (dBusMap.propertyType == "string")
537     {
538         std::variant<std::string> v = std::get<std::string>(value);
539         setDbusValue(v);
540     }
541     else
542     {
543         throw std::invalid_argument("UnSpported Dbus Type");
544     }
545 }
546 
547 PropertyValue DBusHandler::getDbusPropertyVariant(
548     const char* objPath, const char* dbusProp, const char* dbusInterface) const
549 {
550     auto& bus = DBusHandler::getBus();
551     auto service = getService(objPath, dbusInterface);
552     auto method = bus.new_method_call(service.c_str(), objPath, dbusProperties,
553                                       "Get");
554     method.append(dbusInterface, dbusProp);
555     PropertyValue value{};
556     auto reply = bus.call(method, dbusTimeout);
557     reply.read(value);
558     return value;
559 }
560 
561 PropertyValue jsonEntryToDbusVal(std::string_view type,
562                                  const nlohmann::json& value)
563 {
564     PropertyValue propValue{};
565     if (type == "uint8_t")
566     {
567         propValue = static_cast<uint8_t>(value);
568     }
569     else if (type == "uint16_t")
570     {
571         propValue = static_cast<uint16_t>(value);
572     }
573     else if (type == "uint32_t")
574     {
575         propValue = static_cast<uint32_t>(value);
576     }
577     else if (type == "uint64_t")
578     {
579         propValue = static_cast<uint64_t>(value);
580     }
581     else if (type == "int16_t")
582     {
583         propValue = static_cast<int16_t>(value);
584     }
585     else if (type == "int32_t")
586     {
587         propValue = static_cast<int32_t>(value);
588     }
589     else if (type == "int64_t")
590     {
591         propValue = static_cast<int64_t>(value);
592     }
593     else if (type == "bool")
594     {
595         propValue = static_cast<bool>(value);
596     }
597     else if (type == "double")
598     {
599         propValue = static_cast<double>(value);
600     }
601     else if (type == "string")
602     {
603         propValue = static_cast<std::string>(value);
604     }
605     else
606     {
607         error("Unknown D-Bus property type, TYPE={OTHER_TYPE}", "OTHER_TYPE",
608               type);
609     }
610 
611     return propValue;
612 }
613 
614 uint16_t findStateEffecterId(const pldm_pdr* pdrRepo, uint16_t entityType,
615                              uint16_t entityInstance, uint16_t containerId,
616                              uint16_t stateSetId, bool localOrRemote)
617 {
618     uint8_t* pdrData = nullptr;
619     uint32_t pdrSize{};
620     const pldm_pdr_record* record{};
621     do
622     {
623         record = pldm_pdr_find_record_by_type(pdrRepo, PLDM_STATE_EFFECTER_PDR,
624                                               record, &pdrData, &pdrSize);
625         if (record && (localOrRemote ^ pldm_pdr_record_is_remote(record)))
626         {
627             auto pdr = reinterpret_cast<pldm_state_effecter_pdr*>(pdrData);
628             auto compositeEffecterCount = pdr->composite_effecter_count;
629             auto possible_states_start = pdr->possible_states;
630 
631             for (auto effecters = 0x00; effecters < compositeEffecterCount;
632                  effecters++)
633             {
634                 auto possibleStates =
635                     reinterpret_cast<state_effecter_possible_states*>(
636                         possible_states_start);
637                 auto setId = possibleStates->state_set_id;
638                 auto possibleStateSize = possibleStates->possible_states_size;
639 
640                 if (entityType == pdr->entity_type &&
641                     entityInstance == pdr->entity_instance &&
642                     containerId == pdr->container_id && stateSetId == setId)
643                 {
644                     return pdr->effecter_id;
645                 }
646                 possible_states_start += possibleStateSize + sizeof(setId) +
647                                          sizeof(possibleStateSize);
648             }
649         }
650     } while (record);
651 
652     return PLDM_INVALID_EFFECTER_ID;
653 }
654 
655 int emitStateSensorEventSignal(uint8_t tid, uint16_t sensorId,
656                                uint8_t sensorOffset, uint8_t eventState,
657                                uint8_t previousEventState)
658 {
659     try
660     {
661         auto& bus = DBusHandler::getBus();
662         auto msg = bus.new_signal("/xyz/openbmc_project/pldm",
663                                   "xyz.openbmc_project.PLDM.Event",
664                                   "StateSensorEvent");
665         msg.append(tid, sensorId, sensorOffset, eventState, previousEventState);
666 
667         msg.signal_send();
668     }
669     catch (const std::exception& e)
670     {
671         error("Error emitting pldm event signal:ERROR={ERR_EXCEP}", "ERR_EXCEP",
672               e.what());
673         return PLDM_ERROR;
674     }
675 
676     return PLDM_SUCCESS;
677 }
678 
679 uint16_t findStateSensorId(const pldm_pdr* pdrRepo, uint8_t tid,
680                            uint16_t entityType, uint16_t entityInstance,
681                            uint16_t containerId, uint16_t stateSetId)
682 {
683     auto pdrs = findStateSensorPDR(tid, entityType, stateSetId, pdrRepo);
684     for (auto pdr : pdrs)
685     {
686         auto sensorPdr = reinterpret_cast<pldm_state_sensor_pdr*>(pdr.data());
687         auto compositeSensorCount = sensorPdr->composite_sensor_count;
688         auto possible_states_start = sensorPdr->possible_states;
689 
690         for (auto sensors = 0x00; sensors < compositeSensorCount; sensors++)
691         {
692             auto possibleStates =
693                 reinterpret_cast<state_sensor_possible_states*>(
694                     possible_states_start);
695             auto setId = possibleStates->state_set_id;
696             auto possibleStateSize = possibleStates->possible_states_size;
697             if (entityType == sensorPdr->entity_type &&
698                 entityInstance == sensorPdr->entity_instance &&
699                 stateSetId == setId && containerId == sensorPdr->container_id)
700             {
701                 return sensorPdr->sensor_id;
702             }
703             possible_states_start += possibleStateSize + sizeof(setId) +
704                                      sizeof(possibleStateSize);
705         }
706     }
707     return PLDM_INVALID_EFFECTER_ID;
708 }
709 
710 void printBuffer(bool isTx, const std::vector<uint8_t>& buffer)
711 {
712     if (!buffer.empty())
713     {
714         if (isTx)
715         {
716             std::cout << "Tx: ";
717         }
718         else
719         {
720             std::cout << "Rx: ";
721         }
722         std::ostringstream tempStream;
723         for (int byte : buffer)
724         {
725             tempStream << std::setfill('0') << std::setw(2) << std::hex << byte
726                        << " ";
727         }
728         std::cout << tempStream.str() << std::endl;
729     }
730 }
731 
732 std::string toString(const struct variable_field& var)
733 {
734     if (var.ptr == nullptr || !var.length)
735     {
736         return "";
737     }
738 
739     std::string str(reinterpret_cast<const char*>(var.ptr), var.length);
740     std::replace_if(
741         str.begin(), str.end(), [](const char& c) { return !isprint(c); }, ' ');
742     return str;
743 }
744 
745 std::vector<std::string> split(std::string_view srcStr, std::string_view delim,
746                                std::string_view trimStr)
747 {
748     std::vector<std::string> out;
749     size_t start;
750     size_t end = 0;
751 
752     while ((start = srcStr.find_first_not_of(delim, end)) != std::string::npos)
753     {
754         end = srcStr.find(delim, start);
755         std::string_view dstStr = srcStr.substr(start, end - start);
756         if (!trimStr.empty())
757         {
758             dstStr.remove_prefix(dstStr.find_first_not_of(trimStr));
759             dstStr.remove_suffix(dstStr.size() - 1 -
760                                  dstStr.find_last_not_of(trimStr));
761         }
762 
763         if (!dstStr.empty())
764         {
765             out.push_back(std::string(dstStr));
766         }
767     }
768 
769     return out;
770 }
771 
772 std::string getCurrentSystemTime()
773 {
774     using namespace std::chrono;
775     const time_point<system_clock> tp = system_clock::now();
776     std::time_t tt = system_clock::to_time_t(tp);
777     auto ms = duration_cast<microseconds>(tp.time_since_epoch()) -
778               duration_cast<seconds>(tp.time_since_epoch());
779 
780     std::stringstream ss;
781     ss << std::put_time(std::localtime(&tt), "%F %Z %T.")
782        << std::to_string(ms.count());
783     return ss.str();
784 }
785 
786 bool checkForFruPresence(const std::string& objPath)
787 {
788     bool isPresent = false;
789     static constexpr auto presentInterface =
790         "xyz.openbmc_project.Inventory.Item";
791     static constexpr auto presentProperty = "Present";
792     try
793     {
794         auto propVal = pldm::utils::DBusHandler().getDbusPropertyVariant(
795             objPath.c_str(), presentProperty, presentInterface);
796         isPresent = std::get<bool>(propVal);
797     }
798     catch (const sdbusplus::exception::SdBusError& e)
799     {
800         error(
801             "Failed to check for FRU presence for {OBJ_PATH} ERROR = {ERR_EXCEP}",
802             "OBJ_PATH", objPath.c_str(), "ERR_EXCEP", e.what());
803     }
804     return isPresent;
805 }
806 
807 } // namespace utils
808 } // namespace pldm
809