Varsha Kaverappa | e1874e8 | 2023-05-02 09:53:24 -0500 | [diff] [blame] | 1 | #include "file_io_type_vpd.hpp" |
| 2 | |
| 3 | #include "libpldm/base.h" |
| 4 | #include "libpldm/file_io.h" |
| 5 | |
| 6 | #include "common/utils.hpp" |
| 7 | |
| 8 | #include <stdint.h> |
| 9 | |
| 10 | #include <iostream> |
| 11 | |
| 12 | typedef uint8_t byte; |
| 13 | |
| 14 | namespace pldm |
| 15 | { |
| 16 | namespace responder |
| 17 | { |
| 18 | int keywordHandler::read(uint32_t offset, uint32_t& length, Response& response, |
| 19 | oem_platform::Handler* /*oemPlatformHandler*/) |
| 20 | { |
| 21 | const char* keywrdObjPath = |
| 22 | "/xyz/openbmc_project/inventory/system/chassis/motherboard"; |
| 23 | const char* keywrdPropName = "PD_D"; |
| 24 | const char* keywrdInterface = "com.ibm.ipzvpd.PSPD"; |
| 25 | |
| 26 | std::variant<std::vector<byte>> keywrd; |
| 27 | |
| 28 | try |
| 29 | { |
| 30 | auto& bus = pldm::utils::DBusHandler::getBus(); |
| 31 | auto service = pldm::utils::DBusHandler().getService(keywrdObjPath, |
| 32 | keywrdInterface); |
| 33 | auto method = bus.new_method_call(service.c_str(), keywrdObjPath, |
| 34 | "org.freedesktop.DBus.Properties", |
| 35 | "Get"); |
| 36 | method.append(keywrdInterface, keywrdPropName); |
| 37 | auto reply = bus.call(method); |
| 38 | reply.read(keywrd); |
| 39 | } |
| 40 | catch (const std::exception& e) |
| 41 | { |
| 42 | std::cerr << "Get keyword error from dbus interface : " |
| 43 | << keywrdInterface << " ERROR= " << e.what() << std::endl; |
| 44 | } |
| 45 | |
| 46 | uint32_t keywrdSize = std::get<std::vector<byte>>(keywrd).size(); |
| 47 | |
| 48 | if (length < keywrdSize) |
| 49 | { |
| 50 | std::cerr << "length requested is less the keyword size, length: " |
| 51 | << length << " keyword size: " << keywrdSize << std::endl; |
| 52 | return PLDM_ERROR_INVALID_DATA; |
| 53 | } |
| 54 | |
| 55 | namespace fs = std::filesystem; |
| 56 | constexpr auto keywrdDirPath = "/tmp/pldm/"; |
| 57 | constexpr auto keywrdFilePath = "/tmp/pldm/vpdKeywrd.bin"; |
| 58 | |
| 59 | if (!fs::exists(keywrdDirPath)) |
| 60 | { |
| 61 | fs::create_directories(keywrdDirPath); |
| 62 | fs::permissions(keywrdDirPath, |
| 63 | fs::perms::others_read | fs::perms::owner_write); |
| 64 | } |
| 65 | |
| 66 | std::ofstream keywrdFile(keywrdFilePath); |
| 67 | auto fd = open(keywrdFilePath, std::ios::out | std::ofstream::binary); |
| 68 | if (!keywrdFile) |
| 69 | { |
| 70 | std::cerr << "VPD keyword file open error: " << keywrdFilePath |
| 71 | << " errno: " << errno << std::endl; |
| 72 | pldm::utils::reportError( |
| 73 | "xyz.openbmc_project.PLDM.Error.readKeywordHandler.keywordFileOpenError"); |
| 74 | return PLDM_ERROR; |
| 75 | } |
| 76 | |
| 77 | if (offset > keywrdSize) |
| 78 | { |
| 79 | std::cerr << "Offset exceeds file size, OFFSET=" << offset |
| 80 | << " FILE_SIZE=" << keywrdSize << std::endl; |
| 81 | return PLDM_DATA_OUT_OF_RANGE; |
| 82 | } |
| 83 | |
| 84 | // length of keyword data should be same as keyword data size in dbus object |
| 85 | length = static_cast<uint32_t>(keywrdSize) - offset; |
| 86 | |
| 87 | auto returnCode = lseek(fd, offset, SEEK_SET); |
| 88 | if (returnCode == -1) |
| 89 | { |
| 90 | std::cerr |
| 91 | << "Could not find keyword data at given offset. File Seek failed" |
| 92 | << std::endl; |
| 93 | return PLDM_ERROR; |
| 94 | } |
| 95 | |
| 96 | keywrdFile.write((const char*)std::get<std::vector<byte>>(keywrd).data(), |
| 97 | keywrdSize); |
| 98 | if (keywrdFile.bad()) |
| 99 | { |
| 100 | std::cerr << "Error while writing to file: " << keywrdFilePath |
| 101 | << std::endl; |
| 102 | } |
| 103 | keywrdFile.close(); |
| 104 | |
| 105 | auto rc = readFile(keywrdFilePath, offset, keywrdSize, response); |
| 106 | fs::remove(keywrdFilePath); |
| 107 | if (rc) |
| 108 | { |
| 109 | std::cerr << "Read error for keyword file with size: " << keywrdSize |
| 110 | << std::endl; |
| 111 | pldm::utils::reportError( |
| 112 | "xyz.openbmc_project.PLDM.Error.readKeywordHandler.keywordFileReadError"); |
| 113 | return PLDM_ERROR; |
| 114 | } |
| 115 | return PLDM_SUCCESS; |
| 116 | } |
| 117 | } // namespace responder |
| 118 | } // namespace pldm |