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 | |
Riya Dixit | 797f338 | 2023-08-22 22:27:51 -0500 | [diff] [blame] | 10 | #include <phosphor-logging/lg2.hpp> |
| 11 | |
Varsha Kaverappa | e1874e8 | 2023-05-02 09:53:24 -0500 | [diff] [blame] | 12 | #include <iostream> |
| 13 | |
Riya Dixit | 797f338 | 2023-08-22 22:27:51 -0500 | [diff] [blame] | 14 | PHOSPHOR_LOG2_USING; |
| 15 | |
Varsha Kaverappa | e1874e8 | 2023-05-02 09:53:24 -0500 | [diff] [blame] | 16 | typedef uint8_t byte; |
| 17 | |
| 18 | namespace pldm |
| 19 | { |
| 20 | namespace responder |
| 21 | { |
| 22 | int keywordHandler::read(uint32_t offset, uint32_t& length, Response& response, |
| 23 | oem_platform::Handler* /*oemPlatformHandler*/) |
| 24 | { |
| 25 | const char* keywrdObjPath = |
| 26 | "/xyz/openbmc_project/inventory/system/chassis/motherboard"; |
| 27 | const char* keywrdPropName = "PD_D"; |
| 28 | const char* keywrdInterface = "com.ibm.ipzvpd.PSPD"; |
| 29 | |
| 30 | std::variant<std::vector<byte>> keywrd; |
| 31 | |
| 32 | try |
| 33 | { |
| 34 | auto& bus = pldm::utils::DBusHandler::getBus(); |
| 35 | auto service = pldm::utils::DBusHandler().getService(keywrdObjPath, |
| 36 | keywrdInterface); |
| 37 | auto method = bus.new_method_call(service.c_str(), keywrdObjPath, |
| 38 | "org.freedesktop.DBus.Properties", |
| 39 | "Get"); |
| 40 | method.append(keywrdInterface, keywrdPropName); |
vkaverap@in.ibm.com | 91a092f | 2023-09-18 23:39:44 -0500 | [diff] [blame] | 41 | auto reply = bus.call(method, dbusTimeout); |
Varsha Kaverappa | e1874e8 | 2023-05-02 09:53:24 -0500 | [diff] [blame] | 42 | reply.read(keywrd); |
| 43 | } |
| 44 | catch (const std::exception& e) |
| 45 | { |
Riya Dixit | 797f338 | 2023-08-22 22:27:51 -0500 | [diff] [blame] | 46 | error( |
| 47 | "Get keyword error from dbus interface :{KEYWORD_INTF} ERROR={ERR_EXCEP}", |
| 48 | "KEYWORD_INTF", keywrdInterface, "ERR_EXCEP", e.what()); |
Varsha Kaverappa | e1874e8 | 2023-05-02 09:53:24 -0500 | [diff] [blame] | 49 | } |
| 50 | |
| 51 | uint32_t keywrdSize = std::get<std::vector<byte>>(keywrd).size(); |
Varsha Kaverappa | e1874e8 | 2023-05-02 09:53:24 -0500 | [diff] [blame] | 52 | if (length < keywrdSize) |
| 53 | { |
Riya Dixit | 797f338 | 2023-08-22 22:27:51 -0500 | [diff] [blame] | 54 | error( |
| 55 | "length requested is less the keyword size, length:{LEN} keyword size:{KEYWORD_SIZE}", |
| 56 | "LEN", length, "KEYWORD_SIZE", keywrdSize); |
Varsha Kaverappa | e1874e8 | 2023-05-02 09:53:24 -0500 | [diff] [blame] | 57 | return PLDM_ERROR_INVALID_DATA; |
| 58 | } |
| 59 | |
| 60 | namespace fs = std::filesystem; |
| 61 | constexpr auto keywrdDirPath = "/tmp/pldm/"; |
| 62 | constexpr auto keywrdFilePath = "/tmp/pldm/vpdKeywrd.bin"; |
| 63 | |
| 64 | if (!fs::exists(keywrdDirPath)) |
| 65 | { |
| 66 | fs::create_directories(keywrdDirPath); |
| 67 | fs::permissions(keywrdDirPath, |
| 68 | fs::perms::others_read | fs::perms::owner_write); |
| 69 | } |
| 70 | |
| 71 | std::ofstream keywrdFile(keywrdFilePath); |
| 72 | auto fd = open(keywrdFilePath, std::ios::out | std::ofstream::binary); |
| 73 | if (!keywrdFile) |
| 74 | { |
Riya Dixit | 797f338 | 2023-08-22 22:27:51 -0500 | [diff] [blame] | 75 | error("VPD keyword file open error: {KEYWORD_FILE_PATH} errno: {ERR}", |
| 76 | "KEYWORD_FILE_PATH", keywrdFilePath, "ERR", errno); |
Varsha Kaverappa | e1874e8 | 2023-05-02 09:53:24 -0500 | [diff] [blame] | 77 | pldm::utils::reportError( |
| 78 | "xyz.openbmc_project.PLDM.Error.readKeywordHandler.keywordFileOpenError"); |
| 79 | return PLDM_ERROR; |
| 80 | } |
| 81 | |
| 82 | if (offset > keywrdSize) |
| 83 | { |
Riya Dixit | 797f338 | 2023-08-22 22:27:51 -0500 | [diff] [blame] | 84 | error("Offset exceeds file size, OFFSET={OFFSET} FILE_SIZE={FILE_SIZE}", |
| 85 | "OFFSET", offset, "FILE_SIZE", keywrdSize); |
Varsha Kaverappa | e1874e8 | 2023-05-02 09:53:24 -0500 | [diff] [blame] | 86 | return PLDM_DATA_OUT_OF_RANGE; |
| 87 | } |
| 88 | |
Riya Dixit | 797f338 | 2023-08-22 22:27:51 -0500 | [diff] [blame] | 89 | // length of keyword data should be same as keyword data size in dbus |
| 90 | // object |
Varsha Kaverappa | e1874e8 | 2023-05-02 09:53:24 -0500 | [diff] [blame] | 91 | length = static_cast<uint32_t>(keywrdSize) - offset; |
| 92 | |
| 93 | auto returnCode = lseek(fd, offset, SEEK_SET); |
| 94 | if (returnCode == -1) |
| 95 | { |
Riya Dixit | 797f338 | 2023-08-22 22:27:51 -0500 | [diff] [blame] | 96 | error("Could not find keyword data at given offset. File Seek failed"); |
Varsha Kaverappa | e1874e8 | 2023-05-02 09:53:24 -0500 | [diff] [blame] | 97 | return PLDM_ERROR; |
| 98 | } |
| 99 | |
| 100 | keywrdFile.write((const char*)std::get<std::vector<byte>>(keywrd).data(), |
| 101 | keywrdSize); |
| 102 | if (keywrdFile.bad()) |
| 103 | { |
Riya Dixit | 797f338 | 2023-08-22 22:27:51 -0500 | [diff] [blame] | 104 | error("Error while writing to file: {KEYWORD_FILE_PATH}", |
| 105 | "KEYWORD_FILE_PATH", keywrdFilePath); |
Varsha Kaverappa | e1874e8 | 2023-05-02 09:53:24 -0500 | [diff] [blame] | 106 | } |
| 107 | keywrdFile.close(); |
| 108 | |
| 109 | auto rc = readFile(keywrdFilePath, offset, keywrdSize, response); |
| 110 | fs::remove(keywrdFilePath); |
| 111 | if (rc) |
| 112 | { |
Riya Dixit | 797f338 | 2023-08-22 22:27:51 -0500 | [diff] [blame] | 113 | error("Read error for keyword file with size: {KEYWORD_SIZE}", |
| 114 | "KEYWORD_SIZE", keywrdSize); |
Varsha Kaverappa | e1874e8 | 2023-05-02 09:53:24 -0500 | [diff] [blame] | 115 | pldm::utils::reportError( |
| 116 | "xyz.openbmc_project.PLDM.Error.readKeywordHandler.keywordFileReadError"); |
| 117 | return PLDM_ERROR; |
| 118 | } |
| 119 | return PLDM_SUCCESS; |
| 120 | } |
| 121 | } // namespace responder |
| 122 | } // namespace pldm |