| #include "bios.hpp" |
| |
| #include "libpldmresponder/utils.hpp" |
| #include "registration.hpp" |
| #include "xyz/openbmc_project/Common/error.hpp" |
| |
| #include <array> |
| #include <boost/crc.hpp> |
| #include <chrono> |
| #include <ctime> |
| #include <iostream> |
| #include <numeric> |
| #include <phosphor-logging/elog-errors.hpp> |
| #include <phosphor-logging/log.hpp> |
| #include <stdexcept> |
| #include <string> |
| #include <variant> |
| #include <vector> |
| |
| using namespace pldm::responder::bios; |
| using namespace bios_parser; |
| |
| namespace pldm |
| { |
| |
| using namespace phosphor::logging; |
| using namespace sdbusplus::xyz::openbmc_project::Common::Error; |
| using EpochTimeUS = uint64_t; |
| using BIOSTableRow = std::vector<uint8_t>; |
| using BIOSJsonName = std::string; |
| |
| constexpr auto dbusProperties = "org.freedesktop.DBus.Properties"; |
| constexpr auto padChksumMax = 7; |
| |
| namespace responder |
| { |
| |
| namespace utils |
| { |
| |
| void epochToBCDTime(uint64_t timeSec, uint8_t& seconds, uint8_t& minutes, |
| uint8_t& hours, uint8_t& day, uint8_t& month, |
| uint16_t& year) |
| { |
| auto t = time_t(timeSec); |
| auto time = localtime(&t); |
| |
| seconds = decimalToBcd(time->tm_sec); |
| minutes = decimalToBcd(time->tm_min); |
| hours = decimalToBcd(time->tm_hour); |
| day = decimalToBcd(time->tm_mday); |
| month = |
| decimalToBcd(time->tm_mon + 1); // The number of months in the range |
| // 0 to 11.PLDM expects range 1 to 12 |
| year = decimalToBcd(time->tm_year + 1900); // The number of years since 1900 |
| } |
| |
| } // namespace utils |
| |
| Response getDateTime(const pldm_msg* request, size_t /*payloadLength*/) |
| { |
| uint8_t seconds = 0; |
| uint8_t minutes = 0; |
| uint8_t hours = 0; |
| uint8_t day = 0; |
| uint8_t month = 0; |
| uint16_t year = 0; |
| |
| constexpr auto timeInterface = "xyz.openbmc_project.Time.EpochTime"; |
| constexpr auto hostTimePath = "/xyz/openbmc_project/time/host"; |
| Response response(sizeof(pldm_msg_hdr) + PLDM_GET_DATE_TIME_RESP_BYTES, 0); |
| auto responsePtr = reinterpret_cast<pldm_msg*>(response.data()); |
| std::variant<EpochTimeUS> value; |
| |
| auto bus = sdbusplus::bus::new_default(); |
| try |
| { |
| auto service = getService(bus, hostTimePath, timeInterface); |
| |
| auto method = bus.new_method_call(service.c_str(), hostTimePath, |
| dbusProperties, "Get"); |
| method.append(timeInterface, "Elapsed"); |
| |
| auto reply = bus.call(method); |
| reply.read(value); |
| } |
| |
| catch (std::exception& e) |
| { |
| log<level::ERR>("Error getting time", entry("PATH=%s", hostTimePath), |
| entry("TIME INTERACE=%s", timeInterface)); |
| |
| encode_get_date_time_resp(request->hdr.instance_id, PLDM_ERROR, seconds, |
| minutes, hours, day, month, year, |
| responsePtr); |
| return response; |
| } |
| |
| uint64_t timeUsec = std::get<EpochTimeUS>(value); |
| |
| uint64_t timeSec = std::chrono::duration_cast<std::chrono::seconds>( |
| std::chrono::microseconds(timeUsec)) |
| .count(); |
| |
| utils::epochToBCDTime(timeSec, seconds, minutes, hours, day, month, year); |
| |
| encode_get_date_time_resp(request->hdr.instance_id, PLDM_SUCCESS, seconds, |
| minutes, hours, day, month, year, responsePtr); |
| return response; |
| } |
| |
| /** @brief Generate the next attribute handle |
| * |
| * @return - uint16_t - next attribute handle |
| */ |
| AttributeHandle nextAttributeHandle() |
| { |
| static AttributeHandle attrHdl = 0; |
| return attrHdl++; |
| } |
| |
| /** @brief Generate the next string handle |
| * * |
| * @return - uint16_t - next string handle |
| */ |
| StringHandle nextStringHandle() |
| { |
| static StringHandle strHdl = 0; |
| return strHdl++; |
| } |
| |
| /** @brief Construct the BIOS string table |
| * |
| * @param[in] BIOSStringTable - the string table |
| * @param[in] transferHandle - transfer handle to identify part of transfer |
| * @param[in] transferOpFlag - flag to indicate which part of data being |
| * transferred |
| * @param[in] instanceID - instance ID to identify the command |
| * @param[in] biosJsonDir - path where the BIOS json files are present |
| */ |
| Response getBIOSStringTable(BIOSTable& BIOSStringTable, |
| uint32_t /*transferHandle*/, |
| uint8_t /*transferOpFlag*/, uint8_t instanceID, |
| const char* biosJsonDir) |
| { |
| Response response(sizeof(pldm_msg_hdr) + PLDM_GET_BIOS_TABLE_MIN_RESP_BYTES, |
| 0); |
| auto responsePtr = reinterpret_cast<pldm_msg*>(response.data()); |
| |
| if (BIOSStringTable.isEmpty()) |
| { // no persisted table, constructing fresh table and file |
| auto biosStrings = bios_parser::getStrings(biosJsonDir); |
| std::sort(biosStrings.begin(), biosStrings.end()); |
| // remove all duplicate strings received from bios json |
| biosStrings.erase(std::unique(biosStrings.begin(), biosStrings.end()), |
| biosStrings.end()); |
| size_t allStringsLen = |
| std::accumulate(biosStrings.begin(), biosStrings.end(), 0, |
| [](size_t sum, const std::string& elem) { |
| return sum + elem.size(); |
| }); |
| size_t sizeWithoutPad = |
| allStringsLen + |
| (biosStrings.size() * (sizeof(pldm_bios_string_table_entry) - 1)); |
| uint8_t padSize = utils::getNumPadBytes(sizeWithoutPad); |
| uint32_t stringTableSize{}; |
| uint32_t checkSum; |
| if (biosStrings.size()) |
| { |
| stringTableSize = sizeWithoutPad + padSize + sizeof(checkSum); |
| } |
| Table stringTable( |
| stringTableSize, |
| 0); // initializing to 0 so that pad will be automatically added |
| auto tablePtr = reinterpret_cast<uint8_t*>(stringTable.data()); |
| for (const auto& elem : biosStrings) |
| { |
| auto stringPtr = |
| reinterpret_cast<struct pldm_bios_string_table_entry*>( |
| tablePtr); |
| |
| stringPtr->string_handle = nextStringHandle(); |
| stringPtr->string_length = elem.length(); |
| memcpy(stringPtr->name, elem.c_str(), elem.length()); |
| tablePtr += sizeof(stringPtr->string_handle) + |
| sizeof(stringPtr->string_length); |
| tablePtr += elem.length(); |
| } |
| tablePtr += padSize; |
| |
| if (stringTableSize) |
| { |
| // compute checksum |
| boost::crc_32_type result; |
| result.process_bytes(stringTable.data(), stringTableSize); |
| checkSum = result.checksum(); |
| std::copy_n(reinterpret_cast<uint8_t*>(&checkSum), sizeof(checkSum), |
| stringTable.data() + sizeWithoutPad + padSize); |
| BIOSStringTable.store(stringTable); |
| } |
| |
| response.resize(sizeof(pldm_msg_hdr) + |
| PLDM_GET_BIOS_TABLE_MIN_RESP_BYTES + |
| stringTableSize, |
| 0); |
| responsePtr = reinterpret_cast<pldm_msg*>(response.data()); |
| size_t respPayloadLength = response.size(); |
| uint32_t nxtTransferHandle = 0; |
| uint8_t transferFlag = PLDM_START_AND_END; |
| encode_get_bios_table_resp(instanceID, PLDM_SUCCESS, nxtTransferHandle, |
| transferFlag, stringTable.data(), |
| respPayloadLength, responsePtr); |
| } |
| else |
| { // persisted table present, constructing response |
| size_t respPayloadLength = response.size(); |
| uint32_t nxtTransferHandle = 0; |
| uint8_t transferFlag = PLDM_START_AND_END; |
| encode_get_bios_table_resp(instanceID, PLDM_SUCCESS, nxtTransferHandle, |
| transferFlag, nullptr, respPayloadLength, |
| responsePtr); // filling up the header here |
| BIOSStringTable.load(response); |
| } |
| |
| return response; |
| } |
| |
| /** @brief Find the string handle from the BIOS string table given the name |
| * |
| * @param[in] name - name of the BIOS string |
| * @param[in] BIOSStringTable - the string table |
| * @return - uint16_t - handle of the string |
| */ |
| StringHandle findStringHandle(const std::string& name, |
| const BIOSTable& BIOSStringTable) |
| { |
| StringHandle hdl{}; |
| Response response; |
| BIOSStringTable.load(response); |
| |
| auto tableData = response.data(); |
| size_t tableLen = response.size(); |
| auto tableEntry = |
| reinterpret_cast<struct pldm_bios_string_table_entry*>(response.data()); |
| while (1) |
| { |
| hdl = tableEntry->string_handle; |
| uint16_t len = tableEntry->string_length; |
| if (name.compare(0, name.length(), tableEntry->name, len) == 0) |
| { |
| break; |
| } |
| tableData += (sizeof(struct pldm_bios_string_table_entry) - 1) + len; |
| |
| if (std::distance(tableData, response.data() + tableLen) <= |
| padChksumMax) |
| { |
| log<level::ERR>("Reached end of BIOS string table,did not find the " |
| "handle for the string", |
| entry("STRING=%s", name.c_str())); |
| elog<InternalFailure>(); |
| break; |
| } |
| |
| tableEntry = |
| reinterpret_cast<struct pldm_bios_string_table_entry*>(tableData); |
| } |
| return hdl; |
| } |
| |
| /** @brief Find the string name from the BIOS string table for a string handle |
| * |
| * @param[in] stringHdl - string handle |
| * @param[in] BIOSStringTable - the string table |
| * |
| * @return - std::string - name of the corresponding BIOS string |
| */ |
| std::string findStringName(StringHandle stringHdl, |
| const BIOSTable& BIOSStringTable) |
| { |
| std::string name; |
| Response response; |
| BIOSStringTable.load(response); |
| |
| auto tableData = response.data(); |
| size_t tableLen = response.size(); |
| auto tableEntry = |
| reinterpret_cast<struct pldm_bios_string_table_entry*>(response.data()); |
| while (1) |
| { |
| StringHandle currHdl = tableEntry->string_handle; |
| uint16_t len = tableEntry->string_length; |
| if (currHdl == stringHdl) |
| { |
| name.resize(len); |
| memcpy(name.data(), tableEntry->name, len); |
| break; |
| } |
| tableData += (sizeof(struct pldm_bios_string_table_entry) - 1) + len; |
| |
| if (std::distance(tableData, response.data() + tableLen) <= |
| padChksumMax) |
| { |
| log<level::ERR>("Reached end of BIOS string table,did not find " |
| "string name for handle", |
| entry("STRING_HANDLE=%d", stringHdl)); |
| break; |
| } |
| |
| tableEntry = |
| reinterpret_cast<struct pldm_bios_string_table_entry*>(tableData); |
| } |
| return name; |
| } |
| |
| namespace bios_type_enum |
| { |
| |
| using namespace bios_parser::bios_enum; |
| |
| /** @brief Find the indices into the array of the possible values of string |
| * handles for the current values.This is used in attribute value table |
| * |
| * @param[in] possiVals - vector of string handles comprising all the possible |
| * values for an attribute |
| * @param[in] currVals - vector of strings comprising all current values |
| * for an attribute |
| * @param[in] BIOSStringTable - the string table |
| * |
| * @return - std::vector<uint8_t> - indices into the array of the possible |
| * values of string handles |
| */ |
| std::vector<uint8_t> findStrIndices(PossibleValuesByHandle possiVals, |
| CurrentValues currVals, |
| const BIOSTable& BIOSStringTable) |
| { |
| std::vector<uint8_t> stringIndices; |
| |
| for (const auto& currVal : currVals) |
| { |
| StringHandle curHdl; |
| try |
| { |
| curHdl = findStringHandle(currVal, BIOSStringTable); |
| } |
| catch (InternalFailure& e) |
| { |
| log<level::ERR>("Exception fetching handle for the string", |
| entry("STRING=%s", currVal.c_str())); |
| continue; |
| } |
| |
| uint8_t i = 0; |
| for (auto possiHdl : possiVals) |
| { |
| if (possiHdl == curHdl) |
| { |
| stringIndices.push_back(i); |
| break; |
| } |
| i++; |
| } |
| } |
| return stringIndices; |
| } |
| |
| /** @brief Find the indices into the array of the possible values of string |
| * handles for the default values. This is used in attribute table |
| * |
| * @param[in] possiVals - vector of strings comprising all the possible values |
| * for an attribute |
| * @param[in] defVals - vector of strings comprising all the default values |
| * for an attribute |
| * @return - std::vector<uint8_t> - indices into the array of the possible |
| * values of string |
| */ |
| std::vector<uint8_t> findDefaultValHandle(const PossibleValues& possiVals, |
| const DefaultValues& defVals) |
| { |
| std::vector<uint8_t> defHdls; |
| for (const auto& defs : defVals) |
| { |
| auto index = std::lower_bound(possiVals.begin(), possiVals.end(), defs); |
| if (index != possiVals.end()) |
| { |
| defHdls.push_back(index - possiVals.begin()); |
| } |
| } |
| |
| return defHdls; |
| } |
| |
| /** @brief Construct the attibute table for BIOS type Enumeration and |
| * Enumeration ReadOnly |
| * @param[in] BIOSStringTable - the string table |
| * @param[in] biosJsonDir - path where the BIOS json files are present |
| * @param[in,out] attributeTable - the attribute table |
| * |
| */ |
| void constructAttrTable(const BIOSTable& BIOSStringTable, |
| const char* biosJsonDir, Table& attributeTable) |
| { |
| setupValueLookup(biosJsonDir); |
| const auto& attributeMap = getValues(); |
| StringHandle strHandle; |
| |
| for (const auto& [key, value] : attributeMap) |
| { |
| try |
| { |
| strHandle = findStringHandle(key, BIOSStringTable); |
| } |
| catch (InternalFailure& e) |
| { |
| log<level::ERR>("Could not find handle for BIOS string", |
| entry("ATTRIBUTE=%s", key.c_str())); |
| continue; |
| } |
| uint8_t typeOfAttr = (std::get<0>(value)) |
| ? PLDM_BIOS_ENUMERATION_READ_ONLY |
| : PLDM_BIOS_ENUMERATION; |
| PossibleValues possiVals = std::get<1>(value); |
| DefaultValues defVals = std::get<2>(value); |
| // both the possible and default values are stored in sorted manner to |
| // ease in fetching back/comparison |
| std::sort(possiVals.begin(), possiVals.end()); |
| std::sort(defVals.begin(), defVals.end()); |
| |
| std::vector<StringHandle> possiValsByHdl; |
| for (const auto& elem : possiVals) |
| { |
| try |
| { |
| auto hdl = findStringHandle(elem, BIOSStringTable); |
| possiValsByHdl.push_back(std::move(hdl)); |
| } |
| catch (InternalFailure& e) |
| { |
| log<level::ERR>("Could not find handle for BIOS string", |
| entry("STRING=%s", elem.c_str())); |
| continue; |
| } |
| } |
| auto defValsByHdl = findDefaultValHandle(possiVals, defVals); |
| |
| BIOSTableRow enumAttrTable( |
| (sizeof(struct pldm_bios_attr_table_entry) - 1) + sizeof(uint8_t) + |
| possiValsByHdl.size() * sizeof(uint16_t) + sizeof(uint8_t) + |
| defValsByHdl.size() * sizeof(uint8_t), |
| 0); |
| BIOSTableRow::iterator it = enumAttrTable.begin(); |
| auto attrPtr = reinterpret_cast<struct pldm_bios_attr_table_entry*>( |
| enumAttrTable.data()); |
| attrPtr->attr_handle = nextAttributeHandle(); |
| attrPtr->attr_type = typeOfAttr; |
| attrPtr->string_handle = std::move(strHandle); |
| std::advance(it, (sizeof(struct pldm_bios_attr_table_entry) - 1)); |
| uint8_t numPossibleVals = possiValsByHdl.size(); |
| std::copy_n(&numPossibleVals, sizeof(numPossibleVals), it); |
| std::advance(it, sizeof(numPossibleVals)); |
| std::copy_n(reinterpret_cast<uint8_t*>(possiValsByHdl.data()), |
| sizeof(uint16_t) * possiValsByHdl.size(), it); |
| std::advance( |
| it, sizeof(uint16_t) * |
| possiValsByHdl.size()); // possible val handle is uint16_t |
| uint8_t numDefaultVals = defValsByHdl.size(); |
| std::copy_n(&numDefaultVals, sizeof(numDefaultVals), it); |
| std::advance(it, sizeof(numDefaultVals)); |
| std::copy(defValsByHdl.begin(), defValsByHdl.end(), it); |
| std::advance(it, defValsByHdl.size()); |
| |
| std::move(enumAttrTable.begin(), enumAttrTable.end(), |
| std::back_inserter(attributeTable)); |
| } |
| } |
| |
| /** @brief Construct the attibute value table for BIOS type Enumeration and |
| * Enumeration ReadOnly |
| * |
| * @param[in] BIOSAttributeTable - the attribute table |
| * @param[in] BIOSStringTable - the string table |
| * @param[in, out] attributeValueTable - the attribute value table |
| * |
| */ |
| void constructAttrValueTable(const BIOSTable& BIOSAttributeTable, |
| const BIOSTable& BIOSStringTable, |
| Table& attributeValueTable) |
| { |
| Response response; |
| BIOSAttributeTable.load(response); |
| |
| auto tableData = response.data(); |
| size_t tableLen = response.size(); |
| auto attrPtr = |
| reinterpret_cast<struct pldm_bios_attr_table_entry*>(response.data()); |
| |
| while (1) |
| { |
| uint16_t attrHdl = attrPtr->attr_handle; |
| uint8_t attrType = attrPtr->attr_type; |
| uint16_t stringHdl = attrPtr->string_handle; |
| tableData += (sizeof(struct pldm_bios_attr_table_entry) - 1); |
| uint8_t numPossiVals = *tableData; |
| tableData++; // pass number of possible values |
| PossibleValuesByHandle possiValsByHdl(numPossiVals, 0); |
| memcpy(possiValsByHdl.data(), tableData, |
| sizeof(uint16_t) * numPossiVals); |
| tableData += sizeof(uint16_t) * numPossiVals; |
| uint8_t numDefVals = *tableData; |
| tableData++; // pass number of def vals |
| tableData += numDefVals; // pass all the def val indices |
| |
| auto attrName = findStringName(stringHdl, BIOSStringTable); |
| if (attrName.empty()) |
| { |
| if (std::distance(tableData, response.data() + tableLen) <= |
| padChksumMax) |
| { |
| log<level::ERR>("Did not find string name for handle", |
| entry("STRING_HANDLE=%d", stringHdl)); |
| return; |
| } |
| attrPtr = |
| reinterpret_cast<struct pldm_bios_attr_table_entry*>(tableData); |
| continue; |
| } |
| CurrentValues currVals; |
| try |
| { |
| currVals = getAttrValue(attrName); |
| } |
| catch (const std::exception& e) |
| { |
| log<level::ERR>( |
| "constructAttrValueTable returned error for attribute", |
| entry("NAME=%s", attrName.c_str()), |
| entry("ERROR=%s", e.what())); |
| if (std::distance(tableData, response.data() + tableLen) <= |
| padChksumMax) |
| { |
| return; |
| } |
| |
| attrPtr = |
| reinterpret_cast<struct pldm_bios_attr_table_entry*>(tableData); |
| continue; |
| } |
| // sorting since the possible values are stored in sorted way |
| std::sort(currVals.begin(), currVals.end()); |
| auto currValStrIndices = |
| findStrIndices(possiValsByHdl, currVals, BIOSStringTable); |
| // number of current values equals to the number of string handles |
| // received not the number of strings received from getAttrValue |
| uint8_t numCurrVals = currValStrIndices.size(); |
| |
| BIOSTableRow enumAttrValTable( |
| (sizeof(struct pldm_bios_attr_val_table_entry) - 1) + |
| sizeof(uint8_t) + numCurrVals * sizeof(uint8_t), |
| 0); |
| BIOSTableRow::iterator it = enumAttrValTable.begin(); |
| auto attrValPtr = |
| reinterpret_cast<struct pldm_bios_attr_val_table_entry*>( |
| enumAttrValTable.data()); |
| attrValPtr->attr_handle = attrHdl; |
| attrValPtr->attr_type = attrType; |
| std::advance(it, (sizeof(pldm_bios_attr_val_table_entry) - 1)); |
| std::copy_n(&numCurrVals, sizeof(numCurrVals), it); |
| std::advance(it, sizeof(numCurrVals)); |
| if (numCurrVals) |
| { |
| std::copy(currValStrIndices.begin(), currValStrIndices.end(), it); |
| std::advance(it, currValStrIndices.size()); |
| } |
| std::move(enumAttrValTable.begin(), enumAttrValTable.end(), |
| std::back_inserter(attributeValueTable)); |
| |
| if (std::distance(tableData, response.data() + tableLen) <= |
| padChksumMax) |
| { |
| break; |
| } |
| |
| attrPtr = |
| reinterpret_cast<struct pldm_bios_attr_table_entry*>(tableData); |
| } |
| } |
| |
| } // end namespace bios_type_enum |
| |
| namespace bios_type_string |
| { |
| |
| using namespace bios_parser::bios_string; |
| |
| /** @brief Construct the attibute table for BIOS type String and |
| * String ReadOnly |
| * @param[in] BIOSStringTable - the string table |
| * @param[in] biosJsonDir - path where the BIOS json files are present |
| * @param[in,out] attributeTable - the attribute table |
| * |
| */ |
| void constructAttrTable(const BIOSTable& BIOSStringTable, |
| const char* biosJsonDir, Table& attributeTable) |
| { |
| auto rc = setupValueLookup(biosJsonDir); |
| if (rc == -1) |
| { |
| log<level::ERR>("Failed to parse entries in Json file"); |
| return; |
| } |
| const auto& attributeMap = getValues(); |
| StringHandle strHandle; |
| |
| for (const auto& [key, value] : attributeMap) |
| { |
| try |
| { |
| strHandle = findStringHandle(key, BIOSStringTable); |
| } |
| catch (InternalFailure& e) |
| { |
| log<level::ERR>("Could not find handle for BIOS string", |
| entry("ATTRIBUTE=%s", key.c_str())); |
| continue; |
| } |
| |
| const auto& [type, strType, minStrLen, maxStrLen, defaultStrLen, |
| defaultStr] = value; |
| uint8_t typeOfAttr = |
| type ? PLDM_BIOS_STRING_READ_ONLY : PLDM_BIOS_STRING; |
| |
| BIOSTableRow stringAttrTable(bios_parser::bios_string::attrTableSize + |
| defaultStr.size()); |
| BIOSTableRow::iterator it = stringAttrTable.begin(); |
| auto attrPtr = reinterpret_cast<struct pldm_bios_attr_table_entry*>( |
| stringAttrTable.data()); |
| attrPtr->attr_handle = nextAttributeHandle(); |
| attrPtr->attr_type = typeOfAttr; |
| attrPtr->string_handle = strHandle; |
| |
| std::advance(it, (sizeof(struct pldm_bios_attr_table_entry) - 1)); |
| std::copy_n(&strType, sizeof(uint8_t), it); |
| std::advance(it, sizeof(uint8_t)); |
| std::copy_n(reinterpret_cast<const uint8_t*>(&minStrLen), |
| sizeof(uint16_t), it); |
| std::advance(it, sizeof(uint16_t)); |
| std::copy_n(reinterpret_cast<const uint8_t*>(&maxStrLen), |
| sizeof(uint16_t), it); |
| std::advance(it, sizeof(uint16_t)); |
| std::copy_n(reinterpret_cast<const uint8_t*>(&defaultStrLen), |
| sizeof(uint16_t), it); |
| std::advance(it, sizeof(uint16_t)); |
| std::copy_n(defaultStr.data(), defaultStr.size(), it); |
| std::advance(it, defaultStr.size()); |
| |
| attributeTable.insert(attributeTable.end(), stringAttrTable.begin(), |
| stringAttrTable.end()); |
| } |
| } |
| |
| /** @brief Construct the attibute value table for BIOS type String and |
| * String ReadOnly |
| * |
| * @param[in] BIOSAttributeTable - the attribute table |
| * @param[in] BIOSStringTable - the string table |
| * @param[in, out] attributeValueTable - the attribute value table |
| * |
| */ |
| void constructAttrValueTable(const BIOSTable& BIOSAttributeTable, |
| const BIOSTable& BIOSStringTable, |
| Table& attributeValueTable) |
| { |
| Response response; |
| BIOSAttributeTable.load(response); |
| |
| auto dataPtr = response.data(); |
| size_t tableLen = response.size(); |
| |
| while (true) |
| { |
| auto attrPtr = |
| reinterpret_cast<struct pldm_bios_attr_table_entry*>(dataPtr); |
| uint16_t attrHdl = attrPtr->attr_handle; |
| uint8_t attrType = attrPtr->attr_type; |
| uint16_t stringHdl = attrPtr->string_handle; |
| dataPtr += (sizeof(struct pldm_bios_attr_table_entry) - 1); |
| // pass number of StringType, MinimumStringLength, MaximumStringLength |
| dataPtr += sizeof(uint8_t) + sizeof(uint16_t) + sizeof(uint16_t); |
| auto sizeDefaultStr = *(reinterpret_cast<uint16_t*>(dataPtr)); |
| // pass number of DefaultStringLength, DefaultString |
| dataPtr += sizeof(uint16_t) + sizeDefaultStr; |
| |
| auto attrName = findStringName(stringHdl, BIOSStringTable); |
| if (attrName.empty()) |
| { |
| if (std::distance(dataPtr, response.data() + tableLen) <= |
| padChksumMax) |
| { |
| log<level::ERR>("Did not find string name for handle", |
| entry("STRING_HANDLE=%d", stringHdl)); |
| return; |
| } |
| continue; |
| } |
| |
| uint16_t currStrLen = 0; |
| std::string currStr; |
| try |
| { |
| currStr = getAttrValue(attrName); |
| currStrLen = currStr.size(); |
| } |
| catch (const std::exception& e) |
| { |
| log<level::ERR>("getAttrValue returned error for attribute", |
| entry("NAME=%s", attrName.c_str()), |
| entry("ERROR=%s", e.what())); |
| if (std::distance(dataPtr, response.data() + tableLen) <= |
| padChksumMax) |
| { |
| return; |
| } |
| continue; |
| } |
| |
| BIOSTableRow strAttrValTable( |
| bios_parser::bios_string::attrValueTableSize + currStrLen, 0); |
| BIOSTableRow::iterator it = strAttrValTable.begin(); |
| auto attrValPtr = |
| reinterpret_cast<struct pldm_bios_attr_val_table_entry*>( |
| strAttrValTable.data()); |
| attrValPtr->attr_handle = attrHdl; |
| attrValPtr->attr_type = attrType; |
| std::advance(it, (sizeof(pldm_bios_attr_val_table_entry) - 1)); |
| std::copy_n(reinterpret_cast<uint8_t*>(&currStrLen), sizeof(uint16_t), |
| it); |
| std::advance(it, sizeof(uint16_t)); |
| if (currStrLen) |
| { |
| std::copy_n(currStr.cbegin(), currStrLen, it); |
| std::advance(it, currStrLen); |
| } |
| |
| attributeValueTable.insert(attributeValueTable.end(), |
| strAttrValTable.begin(), |
| strAttrValTable.end()); |
| |
| if (std::distance(dataPtr, response.data() + tableLen) <= padChksumMax) |
| { |
| break; |
| } |
| } |
| } |
| |
| } // end namespace bios_type_string |
| |
| using typeHandler = |
| std::function<void(const BIOSTable& BIOSStringTable, |
| const char* biosJsonDir, Table& attributeTable)>; |
| std::map<BIOSJsonName, typeHandler> attrTypeHandlers{ |
| {bios_parser::bIOSEnumJson, bios_type_enum::constructAttrTable}, |
| {bios_parser::bIOSStrJson, bios_type_string::constructAttrTable}}; |
| |
| using valueHandler = std::function<void(const BIOSTable& BIOSAttributeTable, |
| |
| const BIOSTable& BIOSStringTable, |
| |
| Table& attributeTable)>; |
| |
| std::map<BIOSJsonName, valueHandler> attrValueHandlers{ |
| {bios_parser::bIOSEnumJson, bios_type_enum::constructAttrValueTable}, |
| {bios_parser::bIOSStrJson, bios_type_string::constructAttrValueTable}}; |
| |
| /** @brief Construct the BIOS attribute table |
| * |
| * @param[in] BIOSAttributeTable - the attribute table |
| * @param[in] BIOSStringTable - the string table |
| * @param[in] transferHandle - transfer handle to identify part of transfer |
| * @param[in] transferOpFlag - flag to indicate which part of data being |
| * transferred |
| * @param[in] instanceID - instance ID to identify the command |
| * @param[in] biosJsonDir - path where the BIOS json files are present |
| */ |
| Response getBIOSAttributeTable(BIOSTable& BIOSAttributeTable, |
| const BIOSTable& BIOSStringTable, |
| uint32_t /*transferHandle*/, |
| uint8_t /*transferOpFlag*/, uint8_t instanceID, |
| const char* biosJsonDir) |
| { |
| Response response(sizeof(pldm_msg_hdr) + PLDM_GET_BIOS_TABLE_MIN_RESP_BYTES, |
| 0); |
| auto responsePtr = reinterpret_cast<pldm_msg*>(response.data()); |
| uint32_t nxtTransferHandle = 0; |
| uint8_t transferFlag = PLDM_START_AND_END; |
| |
| if (BIOSAttributeTable.isEmpty()) |
| { // no persisted table, constructing fresh table and response |
| Table attributeTable; |
| fs::path dir(biosJsonDir); |
| |
| for (auto it = attrTypeHandlers.begin(); it != attrTypeHandlers.end(); |
| it++) |
| { |
| fs::path file = dir / it->first; |
| if (fs::exists(file)) |
| { |
| it->second(BIOSStringTable, biosJsonDir, attributeTable); |
| } |
| } |
| |
| if (attributeTable.empty()) |
| { // no available json file is found |
| encode_get_bios_table_resp(instanceID, PLDM_BIOS_TABLE_UNAVAILABLE, |
| nxtTransferHandle, transferFlag, nullptr, |
| response.size(), responsePtr); |
| return response; |
| } |
| |
| // calculate pad |
| uint8_t padSize = utils::getNumPadBytes(attributeTable.size()); |
| std::vector<uint8_t> pad(padSize, 0); |
| if (padSize) |
| { |
| std::move(pad.begin(), pad.end(), |
| std::back_inserter(attributeTable)); |
| } |
| |
| if (!attributeTable.empty()) |
| { |
| // compute checksum |
| boost::crc_32_type result; |
| size_t size = attributeTable.size(); |
| result.process_bytes(attributeTable.data(), size); |
| uint32_t checkSum = result.checksum(); |
| attributeTable.resize(size + sizeof(checkSum)); |
| std::copy_n(reinterpret_cast<uint8_t*>(&checkSum), sizeof(checkSum), |
| attributeTable.data() + size); |
| BIOSAttributeTable.store(attributeTable); |
| } |
| response.resize(sizeof(pldm_msg_hdr) + |
| PLDM_GET_BIOS_TABLE_MIN_RESP_BYTES + |
| attributeTable.size()); |
| responsePtr = reinterpret_cast<pldm_msg*>(response.data()); |
| encode_get_bios_table_resp(instanceID, PLDM_SUCCESS, nxtTransferHandle, |
| transferFlag, attributeTable.data(), |
| response.size(), responsePtr); |
| } |
| else |
| { // persisted table present, constructing response |
| encode_get_bios_table_resp(instanceID, PLDM_SUCCESS, nxtTransferHandle, |
| transferFlag, nullptr, response.size(), |
| responsePtr); // filling up the header here |
| BIOSAttributeTable.load(response); |
| } |
| |
| return response; |
| } |
| |
| /** @brief Construct the BIOS attribute value table |
| * |
| * @param[in] BIOSAttributeValueTable - the attribute value table |
| * @param[in] BIOSAttributeTable - the attribute table |
| * @param[in] BIOSStringTable - the string table |
| * @param[in] transferHandle - transfer handle to identify part of transfer |
| * @param[in] transferOpFlag - flag to indicate which part of data being |
| * transferred |
| * @param[in] instanceID - instance ID to identify the command |
| */ |
| Response getBIOSAttributeValueTable(BIOSTable& BIOSAttributeValueTable, |
| const BIOSTable& BIOSAttributeTable, |
| const BIOSTable& BIOSStringTable, |
| uint32_t& /*transferHandle*/, |
| uint8_t& /*transferOpFlag*/, |
| uint8_t instanceID, const char* biosJsonDir) |
| { |
| Response response(sizeof(pldm_msg_hdr) + PLDM_GET_BIOS_TABLE_MIN_RESP_BYTES, |
| 0); |
| auto responsePtr = reinterpret_cast<pldm_msg*>(response.data()); |
| uint32_t nxtTransferHandle = 0; |
| uint8_t transferFlag = PLDM_START_AND_END; |
| size_t respPayloadLength{}; |
| |
| if (BIOSAttributeValueTable.isEmpty()) |
| { // no persisted table, constructing fresh table and data |
| Table attributeValueTable; |
| fs::path dir(biosJsonDir); |
| |
| for (auto it = attrValueHandlers.begin(); it != attrValueHandlers.end(); |
| it++) |
| { |
| fs::path file = dir / it->first; |
| if (fs::exists(file)) |
| { |
| it->second(BIOSAttributeTable, BIOSStringTable, |
| attributeValueTable); |
| } |
| } |
| |
| if (attributeValueTable.empty()) |
| { // no available json file is found |
| encode_get_bios_table_resp(instanceID, PLDM_BIOS_TABLE_UNAVAILABLE, |
| nxtTransferHandle, transferFlag, nullptr, |
| response.size(), responsePtr); |
| return response; |
| } |
| // calculate pad |
| uint8_t padSize = utils::getNumPadBytes(attributeValueTable.size()); |
| std::vector<uint8_t> pad(padSize, 0); |
| if (padSize) |
| { |
| std::move(pad.begin(), pad.end(), |
| std::back_inserter(attributeValueTable)); |
| } |
| if (!attributeValueTable.empty()) |
| { |
| // compute checksum |
| boost::crc_32_type result; |
| result.process_bytes(attributeValueTable.data(), |
| attributeValueTable.size()); |
| uint32_t checkSum = result.checksum(); |
| size_t size = attributeValueTable.size(); |
| attributeValueTable.resize(size + sizeof(checkSum)); |
| std::copy_n(reinterpret_cast<uint8_t*>(&checkSum), sizeof(checkSum), |
| attributeValueTable.data() + size); |
| BIOSAttributeValueTable.store(attributeValueTable); |
| } |
| |
| response.resize(sizeof(pldm_msg_hdr) + |
| PLDM_GET_BIOS_TABLE_MIN_RESP_BYTES + |
| attributeValueTable.size()); |
| responsePtr = reinterpret_cast<pldm_msg*>(response.data()); |
| respPayloadLength = response.size(); |
| encode_get_bios_table_resp(instanceID, PLDM_SUCCESS, nxtTransferHandle, |
| transferFlag, attributeValueTable.data(), |
| respPayloadLength, responsePtr); |
| } |
| else |
| { // persisted table present, constructing response |
| respPayloadLength = response.size(); |
| encode_get_bios_table_resp(instanceID, PLDM_SUCCESS, nxtTransferHandle, |
| transferFlag, nullptr, respPayloadLength, |
| responsePtr); // filling up the header here |
| BIOSAttributeValueTable.load(response); |
| } |
| |
| return response; |
| } |
| |
| Response getBIOSTable(const pldm_msg* request, size_t payloadLength) |
| { |
| fs::create_directory(BIOS_TABLES_DIR); |
| auto response = internal::buildBIOSTables(request, payloadLength, |
| BIOS_JSONS_DIR, BIOS_TABLES_DIR); |
| |
| return response; |
| } |
| |
| namespace bios |
| { |
| |
| void registerHandlers() |
| { |
| registerHandler(PLDM_BIOS, PLDM_GET_DATE_TIME, std::move(getDateTime)); |
| registerHandler(PLDM_BIOS, PLDM_GET_BIOS_TABLE, std::move(getBIOSTable)); |
| } |
| |
| namespace internal |
| { |
| |
| Response buildBIOSTables(const pldm_msg* request, size_t payloadLength, |
| const char* biosJsonDir, const char* biosTablePath) |
| { |
| Response response(sizeof(pldm_msg_hdr) + PLDM_GET_BIOS_TABLE_MIN_RESP_BYTES, |
| 0); |
| auto responsePtr = reinterpret_cast<pldm_msg*>(response.data()); |
| |
| uint32_t transferHandle{}; |
| uint8_t transferOpFlag{}; |
| uint8_t tableType{}; |
| |
| auto rc = decode_get_bios_table_req(request, payloadLength, &transferHandle, |
| &transferOpFlag, &tableType); |
| if (rc == PLDM_SUCCESS) |
| { |
| BIOSTable BIOSStringTable( |
| ((std::string(biosTablePath) + "/stringTable")).c_str()); |
| BIOSTable BIOSAttributeTable( |
| ((std::string(biosTablePath) + "/attributeTable")).c_str()); |
| BIOSTable BIOSAttributeValueTable( |
| ((std::string(biosTablePath) + "/attributeValueTable")).c_str()); |
| switch (tableType) |
| { |
| case PLDM_BIOS_STRING_TABLE: |
| |
| response = getBIOSStringTable( |
| BIOSStringTable, transferHandle, transferOpFlag, |
| request->hdr.instance_id, biosJsonDir); |
| break; |
| case PLDM_BIOS_ATTR_TABLE: |
| |
| if (BIOSStringTable.isEmpty()) |
| { |
| rc = PLDM_BIOS_TABLE_UNAVAILABLE; |
| } |
| else |
| { |
| response = getBIOSAttributeTable( |
| BIOSAttributeTable, BIOSStringTable, transferHandle, |
| transferOpFlag, request->hdr.instance_id, biosJsonDir); |
| } |
| break; |
| case PLDM_BIOS_ATTR_VAL_TABLE: |
| if (BIOSAttributeTable.isEmpty()) |
| { |
| rc = PLDM_BIOS_TABLE_UNAVAILABLE; |
| } |
| else |
| { |
| response = getBIOSAttributeValueTable( |
| BIOSAttributeValueTable, BIOSAttributeTable, |
| BIOSStringTable, transferHandle, transferOpFlag, |
| request->hdr.instance_id, biosJsonDir); |
| } |
| break; |
| default: |
| rc = PLDM_INVALID_BIOS_TABLE_TYPE; |
| break; |
| } |
| } |
| |
| if (rc != PLDM_SUCCESS) |
| { |
| uint32_t nxtTransferHandle{}; |
| uint8_t transferFlag{}; |
| size_t respPayloadLength{}; |
| |
| encode_get_bios_table_resp(request->hdr.instance_id, rc, |
| nxtTransferHandle, transferFlag, nullptr, |
| respPayloadLength, responsePtr); |
| } |
| |
| return response; |
| } |
| |
| } // end namespace internal |
| } // namespace bios |
| |
| } // namespace responder |
| } // namespace pldm |