apphandler.cpp - openbmc/phosphor-host-ipmid - Gitiles

 #include "apphandler.h"
 #include "app/channel.hpp"
 #include "app/watchdog.hpp"
 #include "host-ipmid/ipmid-api.h"
 #include "ipmid.hpp"
 #include "nlohmann/json.hpp"
 #include "types.hpp"
 #include "utils.hpp"

 #include <fstream>
 #include <stdio.h>
 #include <stdint.h>
 #include <systemd/sd-bus.h>
 #include <mapper.h>
 #include <array>
 #include <vector>
 #include <string>
 #include <cstddef>
 #include <experimental/filesystem>

 #include <arpa/inet.h>
 #include "transporthandler.hpp"

 #include <phosphor-logging/log.hpp>
 #include <phosphor-logging/elog-errors.hpp>
 #include "xyz/openbmc_project/Common/error.hpp"

 extern sd_bus *bus;

 constexpr auto app_obj = "/org/openbmc/NetworkManager/Interface";
 constexpr auto app_ifc = "org.openbmc.NetworkManager";
 constexpr auto app_nwinterface = "eth0";

 constexpr auto bmc_interface = "xyz.openbmc_project.Inventory.Item.Bmc";
 constexpr auto bmc_guid_interface = "xyz.openbmc_project.Common.UUID";
 constexpr auto bmc_guid_property = "UUID";
 constexpr auto bmc_guid_len = 16;

 void register_netfn_app_functions() __attribute__((constructor));

 using namespace phosphor::logging;
 using namespace sdbusplus::xyz::openbmc_project::Common::Error;
 namespace fs = std::experimental::filesystem;

 // Offset in get device id command.
 typedef struct
 {
    uint8_t id;
    uint8_t revision;
    uint8_t fw[2];
    uint8_t ipmi_ver;
    uint8_t addn_dev_support;
    uint8_t manuf_id[3];
    uint8_t prod_id[2];
    uint8_t aux[4];
 }__attribute__((packed)) ipmi_device_id_t;

 ipmi_ret_t ipmi_app_set_acpi_power_state(ipmi_netfn_t netfn, ipmi_cmd_t cmd,
                              ipmi_request_t request, ipmi_response_t response,
                              ipmi_data_len_t data_len, ipmi_context_t context)
 {
     ipmi_ret_t rc = IPMI_CC_OK;
     *data_len = 0;

     printf("IPMI SET ACPI STATE Ignoring for now\n");
     return rc;
 }

 typedef struct
 {
     char major;
     char minor;
     uint16_t d[2];
 } rev_t;

 /* Currently supports the vx.x-x-[-x] and v1.x.x-x-[-x] format. It will     */
 /* return -1 if not in those formats, this routine knows how to parse       */
 /* version = v0.6-19-gf363f61-dirty                                         */
 /*            ^ ^ ^^          ^                                             */
 /*            | |  |----------|-- additional details                        */
 /*            | |---------------- Minor                                     */
 /*            |------------------ Major                                     */
 /* and version = v1.99.10-113-g65edf7d-r3-0-g9e4f715                        */
 /*                ^ ^  ^^ ^                                                 */
 /*                | |  |--|---------- additional details                    */
 /*                | |---------------- Minor                                 */
 /*                |------------------ Major                                 */
 /* Additional details : If the option group exists it will force Auxiliary  */
 /* Firmware Revision Information 4th byte to 1 indicating the build was     */
 /* derived with additional edits                                            */
 int convert_version(const char * p, rev_t *rev)
 {
     std::string s(p);
     std::string token;
     uint16_t commits;

     auto location  = s.find_first_of('v');
     if (location != std::string::npos)
     {
         s = s.substr(location+1);
     }

     if (!s.empty())
     {
         location = s.find_first_of(".");
         if (location != std::string::npos)
         {
             rev->major = static_cast<char>(
                     std::stoi(s.substr(0, location), 0, 16));
             token = s.substr(location+1);
         }

         if (!token.empty())
         {
             location = token.find_first_of(".-");
             if (location != std::string::npos)
             {
                 rev->minor = static_cast<char>(
                         std::stoi(token.substr(0, location), 0, 16));
                 token = token.substr(location+1);
             }
         }

         // Capture the number of commits on top of the minor tag.
         // I'm using BE format like the ipmi spec asked for
         location = token.find_first_of(".-");
         if (!token.empty())
         {
             commits = std::stoi(token.substr(0, location), 0, 16);
             rev->d[0] = (commits>>8) | (commits<<8);

             // commit number we skip
             location = token.find_first_of(".-");
             if (location != std::string::npos)
             {
                 token = token.substr(location+1);
             }
         }
         else {
             rev->d[0] = 0;
         }

         if (location != std::string::npos)
         {
             token = token.substr(location+1);
         }

         // Any value of the optional parameter forces it to 1
         location = token.find_first_of(".-");
         if (location != std::string::npos)
         {
             token = token.substr(location+1);
         }
         commits = (!token.empty()) ? 1 : 0;

         //We do this operation to get this displayed in least significant bytes
         //of ipmitool device id command.
         rev->d[1] = (commits>>8) | (commits<<8);
     }

     return 0;
 }

 ipmi_ret_t ipmi_app_get_device_id(ipmi_netfn_t netfn, ipmi_cmd_t cmd,
                              ipmi_request_t request, ipmi_response_t response,
                              ipmi_data_len_t data_len, ipmi_context_t context)
 {
     ipmi_ret_t rc = IPMI_CC_OK;
     const char *objname =
             "/org/openbmc/inventory/system/chassis/motherboard/bmc";
     const char *iface   = "org.openbmc.InventoryItem";
     char *ver = NULL;
     char *busname = NULL;
     int r;
     rev_t rev = {0};
     static ipmi_device_id_t dev_id{};
     static bool dev_id_initialized = false;
     const char* filename = "/usr/share/ipmi-providers/dev_id.json";

     // Data length
     *data_len = sizeof(dev_id);

     if (!dev_id_initialized)
     {
         // Firmware revision is already implemented,
         // so get it from appropriate position.
         r = mapper_get_service(bus, objname, &busname);
         if (r < 0) {
             fprintf(stderr, "Failed to get %s bus name: %s\n",
                     objname, strerror(-r));
             goto finish;
         }
         r = sd_bus_get_property_string(bus,busname,objname,iface,"version",
                 NULL, &ver);
         if ( r < 0 ) {
             fprintf(stderr, "Failed to obtain version property: %s\n",
                     strerror(-r));
         } else {
             r = convert_version(ver, &rev);
             if( r >= 0 ) {
                 // bit7 identifies if the device is available
                 // 0=normal operation
                 // 1=device firmware, SDR update,
                 // or self-initialization in progress.
                 // our SDR is normal working condition, so mask:
                 dev_id.fw[0] = 0x7F & rev.major;

                 rev.minor = (rev.minor > 99 ? 99 : rev.minor);
                 dev_id.fw[1] = rev.minor % 10 + (rev.minor / 10) * 16;
                 memcpy(&dev_id.aux, rev.d, 4);
             }
         }

         // IPMI Spec version 2.0
         dev_id.ipmi_ver = 2;

         std::ifstream dev_id_file(filename);
         if (dev_id_file.is_open())
         {
             auto data = nlohmann::json::parse(dev_id_file, nullptr, false);
             if (!data.is_discarded())
             {
                 dev_id.id = data.value("id", 0);
                 dev_id.revision = data.value("revision", 0);
                 dev_id.addn_dev_support = data.value("addn_dev_support", 0);
                 dev_id.manuf_id[2] = data.value("manuf_id", 0) >> 16;
                 dev_id.manuf_id[1] = data.value("manuf_id", 0) >> 8;
                 dev_id.manuf_id[0] = data.value("manuf_id", 0);
                 dev_id.prod_id[1] = data.value("prod_id", 0) >> 8;
                 dev_id.prod_id[0] = data.value("prod_id", 0);
                 dev_id.aux[3] = data.value("aux", 0) >> 24;
                 dev_id.aux[2] = data.value("aux", 0) >> 16;
                 dev_id.aux[1] = data.value("aux", 0) >> 8;
                 dev_id.aux[0] = data.value("aux", 0);

                 //Don't read the file every time if successful
                 dev_id_initialized = true;
             }
             else
             {
                 log<level::ERR>("Device ID JSON parser failure");
                 rc = IPMI_CC_UNSPECIFIED_ERROR;
             }
         }
         else
         {
             log<level::ERR>("Device ID file not found");
             rc = IPMI_CC_UNSPECIFIED_ERROR;
         }
     }

     // Pack the actual response
     memcpy(response, &dev_id, *data_len);
 finish:
     free(busname);
     free(ver);
     return rc;
 }

 ipmi_ret_t ipmi_app_get_self_test_results(ipmi_netfn_t netfn, ipmi_cmd_t cmd,
                              ipmi_request_t request, ipmi_response_t response,
                              ipmi_data_len_t data_len, ipmi_context_t context)
 {
     ipmi_ret_t rc = IPMI_CC_OK;

     // Byte 2:
     //  55h - No error.
     //  56h - Self Test function not implemented in this controller.
     //  57h - Corrupted or inaccesssible data or devices.
     //  58h - Fatal hardware error.
     //  FFh - reserved.
     //  all other: Device-specific 'internal failure'.
     //  Byte 3:
     //      For byte 2 = 55h, 56h, FFh:     00h
     //      For byte 2 = 58h, all other:    Device-specific
     //      For byte 2 = 57h:   self-test error bitfield.
     //      Note: returning 57h does not imply that all test were run.
     //      [7] 1b = Cannot access SEL device.
     //      [6] 1b = Cannot access SDR Repository.
     //      [5] 1b = Cannot access BMC FRU device.
     //      [4] 1b = IPMB signal lines do not respond.
     //      [3] 1b = SDR Repository empty.
     //      [2] 1b = Internal Use Area of BMC FRU corrupted.
     //      [1] 1b = controller update 'boot block' firmware corrupted.
     //      [0] 1b = controller operational firmware corrupted.

     char selftestresults[2] = {0};

     *data_len = 2;

     selftestresults[0] = 0x56;
     selftestresults[1] = 0;

     memcpy(response, selftestresults, *data_len);

     return rc;
 }

 ipmi_ret_t ipmi_app_get_device_guid(ipmi_netfn_t netfn, ipmi_cmd_t cmd,
                              ipmi_request_t request, ipmi_response_t response,
                              ipmi_data_len_t data_len, ipmi_context_t context)
 {
     const char  *objname = "/org/openbmc/control/chassis0";
     const char  *iface = "org.freedesktop.DBus.Properties";
     const char  *chassis_iface = "org.openbmc.control.Chassis";
     sd_bus_message *reply = NULL;
     sd_bus_error error = SD_BUS_ERROR_NULL;
     int r = 0;
     char *uuid = NULL;
     char *busname = NULL;

     // UUID is in RFC4122 format. Ex: 61a39523-78f2-11e5-9862-e6402cfc3223
     // Per IPMI Spec 2.0 need to convert to 16 hex bytes and reverse the byte
     // order
     // Ex: 0x2332fc2c40e66298e511f2782395a361

     const int resp_size = 16; // Response is 16 hex bytes per IPMI Spec
     uint8_t resp_uuid[resp_size]; // Array to hold the formatted response
     // Point resp end of array to save in reverse order
     int resp_loc = resp_size-1;
     int i = 0;
     char *tokptr = NULL;
     char *id_octet = NULL;

     // Status code.
     ipmi_ret_t rc = IPMI_CC_OK;
     *data_len = 0;

     printf("IPMI GET DEVICE GUID\n");

     // Call Get properties method with the interface and property name
     r = mapper_get_service(bus, objname, &busname);
     if (r < 0) {
         fprintf(stderr, "Failed to get %s bus name: %s\n",
                 objname, strerror(-r));
         goto finish;
     }
     r = sd_bus_call_method(bus,busname,objname,iface,
                            "Get",&error, &reply, "ss",
                            chassis_iface, "uuid");
     if (r < 0)
     {
         fprintf(stderr, "Failed to call Get Method: %s\n", strerror(-r));
         rc = IPMI_CC_UNSPECIFIED_ERROR;
         goto finish;
     }

     r = sd_bus_message_read(reply, "v", "s", &uuid);
     if (r < 0 || uuid == NULL)
     {
         fprintf(stderr, "Failed to get a response: %s", strerror(-r));
         rc = IPMI_CC_RESPONSE_ERROR;
         goto finish;
     }

     // Traverse the UUID
     // Get the UUID octects separated by dash
     id_octet = strtok_r(uuid, "-", &tokptr);

     if (id_octet == NULL)
     {
         // Error
         fprintf(stderr, "Unexpected UUID format: %s", uuid);
         rc = IPMI_CC_RESPONSE_ERROR;
         goto finish;
     }

     while (id_octet != NULL)
     {
         // Calculate the octet string size since it varies
         // Divide it by 2 for the array size since 1 byte is built from 2 chars
         int tmp_size = strlen(id_octet)/2;

         for(i = 0; i < tmp_size; i++)
         {
             // Holder of the 2 chars that will become a byte
             char tmp_array[3] = {0};
             strncpy(tmp_array, id_octet, 2); // 2 chars at a time

             int resp_byte = strtoul(tmp_array, NULL, 16); // Convert to hex byte
             // Copy end to first
             memcpy((void*)&resp_uuid[resp_loc], &resp_byte, 1);
             resp_loc--;
             id_octet+=2; // Finished with the 2 chars, advance
         }
         id_octet=strtok_r(NULL, "-", &tokptr); // Get next octet
     }

     // Data length
     *data_len = resp_size;

     // Pack the actual response
     memcpy(response, &resp_uuid, *data_len);

 finish:
     sd_bus_error_free(&error);
     reply = sd_bus_message_unref(reply);
     free(busname);

     return rc;
 }

 ipmi_ret_t ipmi_app_get_bt_capabilities(ipmi_netfn_t netfn, ipmi_cmd_t cmd,
                              ipmi_request_t request, ipmi_response_t response,
                              ipmi_data_len_t data_len, ipmi_context_t context)
 {
     printf("Handling Netfn:[0x%X], Cmd:[0x%X]\n",netfn,cmd);

     // Status code.
     ipmi_ret_t rc = IPMI_CC_OK;

     // Per IPMI 2.0 spec, the input and output buffer size must be the max
     // buffer size minus one byte to allocate space for the length byte.
     uint8_t str[] = {0x01, MAX_IPMI_BUFFER-1, MAX_IPMI_BUFFER-1, 0x0A, 0x01};

     // Data length
     *data_len = sizeof(str);

     // Pack the actual response
     memcpy(response, &str, *data_len);

     return rc;
 }

 ipmi_ret_t ipmi_app_wildcard_handler(ipmi_netfn_t netfn, ipmi_cmd_t cmd,
                               ipmi_request_t request, ipmi_response_t response,
                               ipmi_data_len_t data_len, ipmi_context_t context)
 {
     printf("Handling WILDCARD Netfn:[0x%X], Cmd:[0x%X]\n",netfn, cmd);

     // Status code.
     ipmi_ret_t rc = IPMI_CC_INVALID;

     *data_len = strlen("THIS IS WILDCARD");

     // Now pack actual response
     memcpy(response, "THIS IS WILDCARD", *data_len);

     return rc;
 }

 ipmi_ret_t ipmi_app_get_sys_guid(ipmi_netfn_t netfn, ipmi_cmd_t cmd,
                              ipmi_request_t request, ipmi_response_t response,
                              ipmi_data_len_t data_len, ipmi_context_t context)

 {
     ipmi_ret_t rc = IPMI_CC_OK;
     sdbusplus::bus::bus bus{ipmid_get_sd_bus_connection()};

     try
     {
         // Get the Inventory object implementing BMC interface
         ipmi::DbusObjectInfo bmcObject =
             ipmi::getDbusObject(bus, bmc_interface);

         // Read UUID property value from bmcObject
         // UUID is in RFC4122 format Ex: 61a39523-78f2-11e5-9862-e6402cfc3223
         auto variant = ipmi::getDbusProperty(
                 bus, bmcObject.second, bmcObject.first, bmc_guid_interface,
                 bmc_guid_property);
         std::string guidProp = variant.get<std::string>();

         // Erase "-" characters from the property value
         guidProp.erase(std::remove(guidProp.begin(), guidProp.end(), '-'),
                 guidProp.end());

         auto guidPropLen = guidProp.length();
         // Validate UUID data
         // Divide by 2 as 1 byte is built from 2 chars
         if ( (guidPropLen <=0) || ((guidPropLen/2) != bmc_guid_len) )

         {
             log<level::ERR>("Invalid UUID property value",
                     entry("UUID_LENGTH=%d", guidPropLen));
             return IPMI_CC_RESPONSE_ERROR;
         }

         // Convert data in RFC4122(MSB) format to LSB format
         // Get 2 characters at a time as 1 byte is built from 2 chars and
         // convert to hex byte
         // TODO: Data printed for GUID command is not as per the
         // GUID format defined in IPMI specification 2.0 section 20.8
         // Ticket raised: https://sourceforge.net/p/ipmitool/bugs/501/
         uint8_t respGuid[bmc_guid_len];
         for (size_t i = 0, respLoc = (bmc_guid_len - 1);
             i < guidPropLen && respLoc >= 0; i += 2, respLoc--)
         {
             auto value = static_cast<uint8_t>(
                     std::stoi(guidProp.substr(i, 2).c_str(), NULL, 16));
             respGuid[respLoc] = value;
         }

         *data_len = bmc_guid_len;
         memcpy(response, &respGuid, bmc_guid_len);
     }
     catch (const InternalFailure& e)
     {
         log<level::ERR>("Failed in reading BMC UUID property",
                         entry("INTERFACE=%s", bmc_interface),
                         entry("PROPERTY_INTERFACE=%s", bmc_guid_interface),
                         entry("PROPERTY=%s", bmc_guid_property));
         return IPMI_CC_UNSPECIFIED_ERROR;
     }
     return rc;
 }

 void register_netfn_app_functions()
 {
     // <Get BT Interface Capabilities>
     printf("Registering NetFn:[0x%X], Cmd:[0x%X]\n",
            NETFUN_APP,
            IPMI_CMD_GET_CAP_BIT);
     ipmi_register_callback(NETFUN_APP,
                            IPMI_CMD_GET_CAP_BIT,
                            NULL,
                            ipmi_app_get_bt_capabilities,
                            PRIVILEGE_USER);

     // <Wildcard Command>
     printf("Registering NetFn:[0x%X], Cmd:[0x%X]\n",
            NETFUN_APP,
            IPMI_CMD_WILDCARD);
     ipmi_register_callback(NETFUN_APP,
                            IPMI_CMD_WILDCARD,
                            NULL,
                            ipmi_app_wildcard_handler,
                            PRIVILEGE_USER);

     // <Reset Watchdog Timer>
     printf("Registering NetFn:[0x%X], Cmd:[0x%X]\n",
            NETFUN_APP,
            IPMI_CMD_RESET_WD);
     ipmi_register_callback(NETFUN_APP,
                            IPMI_CMD_RESET_WD,
                            NULL,
                            ipmi_app_reset_watchdog,
                            PRIVILEGE_OPERATOR);

     // <Set Watchdog Timer>
     printf("Registering NetFn:[0x%X], Cmd:[0x%X]\n",
            NETFUN_APP,
            IPMI_CMD_SET_WD);
     ipmi_register_callback(NETFUN_APP,
                            IPMI_CMD_SET_WD,
                            NULL,
                            ipmi_app_set_watchdog,
                            PRIVILEGE_OPERATOR);

     // <Get Device ID>
     printf("Registering NetFn:[0x%X], Cmd:[0x%X]\n",
            NETFUN_APP,
            IPMI_CMD_GET_DEVICE_ID);
     ipmi_register_callback(NETFUN_APP,
                            IPMI_CMD_GET_DEVICE_ID,
                            NULL,
                            ipmi_app_get_device_id,
                            PRIVILEGE_USER);

     // <Get Self Test Results>
     printf("Registering NetFn:[0x%X], Cmd:[0x%X]\n",
            NETFUN_APP,
            IPMI_CMD_GET_SELF_TEST_RESULTS);
     ipmi_register_callback(NETFUN_APP,
                            IPMI_CMD_GET_SELF_TEST_RESULTS,
                            NULL,
                            ipmi_app_get_self_test_results,
                            PRIVILEGE_USER);

     // <Get Device GUID>
     printf("Registering NetFn:[0x%X], Cmd:[0x%X]\n",
            NETFUN_APP,
            IPMI_CMD_GET_DEVICE_GUID);
     ipmi_register_callback(NETFUN_APP,
                            IPMI_CMD_GET_DEVICE_GUID,
                            NULL,
                            ipmi_app_get_device_guid,
                            PRIVILEGE_USER);

     // <Set ACPI Power State>
     printf("Registering NetFn:[0x%X], Cmd:[0x%X]\n",
            NETFUN_APP,
            IPMI_CMD_SET_ACPI);
     ipmi_register_callback(NETFUN_APP,
                            IPMI_CMD_SET_ACPI,
                            NULL,
                            ipmi_app_set_acpi_power_state,
                            PRIVILEGE_ADMIN);

     // <Set Channel Access>
     printf("Registering NetFn:[0x%X], Cmd:[0x%X]\n",
            NETFUN_APP,
            IPMI_CMD_SET_CHAN_ACCESS);
     ipmi_register_callback(NETFUN_APP,
                            IPMI_CMD_SET_CHAN_ACCESS,
                            NULL,
                            ipmi_set_channel_access,
                            PRIVILEGE_ADMIN);

     // <Get Channel Access>
     printf("Registering NetFn:[0x%X], Cmd:[0x%X]\n",
            NETFUN_APP,
            IPMI_CMD_GET_CHANNEL_ACCESS);
     ipmi_register_callback(NETFUN_APP,
                            IPMI_CMD_GET_CHANNEL_ACCESS,
                            NULL,
                            ipmi_get_channel_access,
                            PRIVILEGE_USER);

     // <Get Channel Info Command>
     printf("Registering NetFn:[0x%X], Cmd:[0x%X]\n",
            NETFUN_APP,
            IPMI_CMD_GET_CHAN_INFO);
     ipmi_register_callback(NETFUN_APP,
                            IPMI_CMD_GET_CHAN_INFO,
                            NULL,
                            ipmi_app_channel_info,
                            PRIVILEGE_USER);

     // <Get System GUID Command>
     printf("Registering NetFn:[0x%X], Cmd:[0x%X]\n",
            NETFUN_APP,
            IPMI_CMD_GET_SYS_GUID);
     ipmi_register_callback(NETFUN_APP,
                            IPMI_CMD_GET_SYS_GUID,
                            NULL,
                            ipmi_app_get_sys_guid,
                            PRIVILEGE_USER);
     return;
 }
	#include "apphandler.h"
	#include "app/channel.hpp"
	#include "app/watchdog.hpp"
	#include "host-ipmid/ipmid-api.h"
	#include "ipmid.hpp"
	#include "nlohmann/json.hpp"
	#include "types.hpp"
	#include "utils.hpp"

	#include <fstream>
	#include <stdio.h>
	#include <stdint.h>
	#include <systemd/sd-bus.h>
	#include <mapper.h>
	#include <array>
	#include <vector>
	#include <string>
	#include <cstddef>
	#include <experimental/filesystem>

	#include <arpa/inet.h>
	#include "transporthandler.hpp"

	#include <phosphor-logging/log.hpp>
	#include <phosphor-logging/elog-errors.hpp>
	#include "xyz/openbmc_project/Common/error.hpp"

	extern sd_bus *bus;

	constexpr auto app_obj = "/org/openbmc/NetworkManager/Interface";
	constexpr auto app_ifc = "org.openbmc.NetworkManager";
	constexpr auto app_nwinterface = "eth0";

	constexpr auto bmc_interface = "xyz.openbmc_project.Inventory.Item.Bmc";
	constexpr auto bmc_guid_interface = "xyz.openbmc_project.Common.UUID";
	constexpr auto bmc_guid_property = "UUID";
	constexpr auto bmc_guid_len = 16;

	void register_netfn_app_functions() __attribute__((constructor));

	using namespace phosphor::logging;
	using namespace sdbusplus::xyz::openbmc_project::Common::Error;
	namespace fs = std::experimental::filesystem;

	// Offset in get device id command.
	typedef struct
	{
	uint8_t id;
	uint8_t revision;
	uint8_t fw[2];
	uint8_t ipmi_ver;
	uint8_t addn_dev_support;
	uint8_t manuf_id[3];
	uint8_t prod_id[2];
	uint8_t aux[4];
	}__attribute__((packed)) ipmi_device_id_t;

	ipmi_ret_t ipmi_app_set_acpi_power_state(ipmi_netfn_t netfn, ipmi_cmd_t cmd,
	ipmi_request_t request, ipmi_response_t response,
	ipmi_data_len_t data_len, ipmi_context_t context)
	{
	ipmi_ret_t rc = IPMI_CC_OK;
	*data_len = 0;

	printf("IPMI SET ACPI STATE Ignoring for now\n");
	return rc;
	}

	typedef struct
	{
	char major;
	char minor;
	uint16_t d[2];
	} rev_t;

	/* Currently supports the vx.x-x-[-x] and v1.x.x-x-[-x] format. It will */
	/* return -1 if not in those formats, this routine knows how to parse */
	/* version = v0.6-19-gf363f61-dirty */
	/* ^ ^ ^^ ^ */
	/* \| \| \|----------\|-- additional details */
	/* \| \|---------------- Minor */
	/* \|------------------ Major */
	/* and version = v1.99.10-113-g65edf7d-r3-0-g9e4f715 */
	/* ^ ^ ^^ ^ */
	/* \| \| \|--\|---------- additional details */
	/* \| \|---------------- Minor */
	/* \|------------------ Major */
	/* Additional details : If the option group exists it will force Auxiliary */
	/* Firmware Revision Information 4th byte to 1 indicating the build was */
	/* derived with additional edits */
	int convert_version(const char * p, rev_t *rev)
	{
	std::string s(p);
	std::string token;
	uint16_t commits;

	auto location = s.find_first_of('v');
	if (location != std::string::npos)
	{
	s = s.substr(location+1);
	}

	if (!s.empty())
	{
	location = s.find_first_of(".");
	if (location != std::string::npos)
	{
	rev->major = static_cast<char>(
	std::stoi(s.substr(0, location), 0, 16));
	token = s.substr(location+1);
	}

	if (!token.empty())
	{
	location = token.find_first_of(".-");
	if (location != std::string::npos)
	{
	rev->minor = static_cast<char>(
	std::stoi(token.substr(0, location), 0, 16));
	token = token.substr(location+1);
	}
	}

	// Capture the number of commits on top of the minor tag.
	// I'm using BE format like the ipmi spec asked for
	location = token.find_first_of(".-");
	if (!token.empty())
	{
	commits = std::stoi(token.substr(0, location), 0, 16);
	rev->d[0] = (commits>>8) \| (commits<<8);

	// commit number we skip
	location = token.find_first_of(".-");
	if (location != std::string::npos)
	{
	token = token.substr(location+1);
	}
	}
	else {
	rev->d[0] = 0;
	}

	if (location != std::string::npos)
	{
	token = token.substr(location+1);
	}

	// Any value of the optional parameter forces it to 1
	location = token.find_first_of(".-");
	if (location != std::string::npos)
	{
	token = token.substr(location+1);
	}
	commits = (!token.empty()) ? 1 : 0;

	//We do this operation to get this displayed in least significant bytes
	//of ipmitool device id command.
	rev->d[1] = (commits>>8) \| (commits<<8);
	}

	return 0;
	}

	ipmi_ret_t ipmi_app_get_device_id(ipmi_netfn_t netfn, ipmi_cmd_t cmd,
	ipmi_request_t request, ipmi_response_t response,
	ipmi_data_len_t data_len, ipmi_context_t context)
	{
	ipmi_ret_t rc = IPMI_CC_OK;
	const char *objname =
	"/org/openbmc/inventory/system/chassis/motherboard/bmc";
	const char *iface = "org.openbmc.InventoryItem";
	char *ver = NULL;
	char *busname = NULL;
	int r;
	rev_t rev = {0};
	static ipmi_device_id_t dev_id{};
	static bool dev_id_initialized = false;
	const char* filename = "/usr/share/ipmi-providers/dev_id.json";

	// Data length
	*data_len = sizeof(dev_id);

	if (!dev_id_initialized)
	{
	// Firmware revision is already implemented,
	// so get it from appropriate position.
	r = mapper_get_service(bus, objname, &busname);
	if (r < 0) {
	fprintf(stderr, "Failed to get %s bus name: %s\n",
	objname, strerror(-r));
	goto finish;
	}
	r = sd_bus_get_property_string(bus,busname,objname,iface,"version",
	NULL, &ver);
	if ( r < 0 ) {
	fprintf(stderr, "Failed to obtain version property: %s\n",
	strerror(-r));
	} else {
	r = convert_version(ver, &rev);
	if( r >= 0 ) {
	// bit7 identifies if the device is available
	// 0=normal operation
	// 1=device firmware, SDR update,
	// or self-initialization in progress.
	// our SDR is normal working condition, so mask:
	dev_id.fw[0] = 0x7F & rev.major;

	rev.minor = (rev.minor > 99 ? 99 : rev.minor);
	dev_id.fw[1] = rev.minor % 10 + (rev.minor / 10) * 16;
	memcpy(&dev_id.aux, rev.d, 4);
	}
	}

	// IPMI Spec version 2.0
	dev_id.ipmi_ver = 2;

	std::ifstream dev_id_file(filename);
	if (dev_id_file.is_open())
	{
	auto data = nlohmann::json::parse(dev_id_file, nullptr, false);
	if (!data.is_discarded())
	{
	dev_id.id = data.value("id", 0);
	dev_id.revision = data.value("revision", 0);
	dev_id.addn_dev_support = data.value("addn_dev_support", 0);
	dev_id.manuf_id[2] = data.value("manuf_id", 0) >> 16;
	dev_id.manuf_id[1] = data.value("manuf_id", 0) >> 8;
	dev_id.manuf_id[0] = data.value("manuf_id", 0);
	dev_id.prod_id[1] = data.value("prod_id", 0) >> 8;
	dev_id.prod_id[0] = data.value("prod_id", 0);
	dev_id.aux[3] = data.value("aux", 0) >> 24;
	dev_id.aux[2] = data.value("aux", 0) >> 16;
	dev_id.aux[1] = data.value("aux", 0) >> 8;
	dev_id.aux[0] = data.value("aux", 0);

	//Don't read the file every time if successful
	dev_id_initialized = true;
	}
	else
	{
	log<level::ERR>("Device ID JSON parser failure");
	rc = IPMI_CC_UNSPECIFIED_ERROR;
	}
	}
	else
	{
	log<level::ERR>("Device ID file not found");
	rc = IPMI_CC_UNSPECIFIED_ERROR;
	}
	}

	// Pack the actual response
	memcpy(response, &dev_id, *data_len);
	finish:
	free(busname);
	free(ver);
	return rc;
	}

	ipmi_ret_t ipmi_app_get_self_test_results(ipmi_netfn_t netfn, ipmi_cmd_t cmd,
	ipmi_request_t request, ipmi_response_t response,
	ipmi_data_len_t data_len, ipmi_context_t context)
	{
	ipmi_ret_t rc = IPMI_CC_OK;

	// Byte 2:
	// 55h - No error.
	// 56h - Self Test function not implemented in this controller.
	// 57h - Corrupted or inaccesssible data or devices.
	// 58h - Fatal hardware error.
	// FFh - reserved.
	// all other: Device-specific 'internal failure'.
	// Byte 3:
	// For byte 2 = 55h, 56h, FFh: 00h
	// For byte 2 = 58h, all other: Device-specific
	// For byte 2 = 57h: self-test error bitfield.
	// Note: returning 57h does not imply that all test were run.
	// [7] 1b = Cannot access SEL device.
	// [6] 1b = Cannot access SDR Repository.
	// [5] 1b = Cannot access BMC FRU device.
	// [4] 1b = IPMB signal lines do not respond.
	// [3] 1b = SDR Repository empty.
	// [2] 1b = Internal Use Area of BMC FRU corrupted.
	// [1] 1b = controller update 'boot block' firmware corrupted.
	// [0] 1b = controller operational firmware corrupted.

	char selftestresults[2] = {0};

	*data_len = 2;

	selftestresults[0] = 0x56;
	selftestresults[1] = 0;

	memcpy(response, selftestresults, *data_len);

	return rc;
	}

	ipmi_ret_t ipmi_app_get_device_guid(ipmi_netfn_t netfn, ipmi_cmd_t cmd,
	ipmi_request_t request, ipmi_response_t response,
	ipmi_data_len_t data_len, ipmi_context_t context)
	{
	const char *objname = "/org/openbmc/control/chassis0";
	const char *iface = "org.freedesktop.DBus.Properties";
	const char *chassis_iface = "org.openbmc.control.Chassis";
	sd_bus_message *reply = NULL;
	sd_bus_error error = SD_BUS_ERROR_NULL;
	int r = 0;
	char *uuid = NULL;
	char *busname = NULL;

	// UUID is in RFC4122 format. Ex: 61a39523-78f2-11e5-9862-e6402cfc3223
	// Per IPMI Spec 2.0 need to convert to 16 hex bytes and reverse the byte
	// order
	// Ex: 0x2332fc2c40e66298e511f2782395a361

	const int resp_size = 16; // Response is 16 hex bytes per IPMI Spec
	uint8_t resp_uuid[resp_size]; // Array to hold the formatted response
	// Point resp end of array to save in reverse order
	int resp_loc = resp_size-1;
	int i = 0;
	char *tokptr = NULL;
	char *id_octet = NULL;

	// Status code.
	ipmi_ret_t rc = IPMI_CC_OK;
	*data_len = 0;

	printf("IPMI GET DEVICE GUID\n");

	// Call Get properties method with the interface and property name
	r = mapper_get_service(bus, objname, &busname);
	if (r < 0) {
	fprintf(stderr, "Failed to get %s bus name: %s\n",
	objname, strerror(-r));
	goto finish;
	}
	r = sd_bus_call_method(bus,busname,objname,iface,
	"Get",&error, &reply, "ss",
	chassis_iface, "uuid");
	if (r < 0)
	{
	fprintf(stderr, "Failed to call Get Method: %s\n", strerror(-r));
	rc = IPMI_CC_UNSPECIFIED_ERROR;
	goto finish;
	}

	r = sd_bus_message_read(reply, "v", "s", &uuid);
	if (r < 0 \|\| uuid == NULL)
	{
	fprintf(stderr, "Failed to get a response: %s", strerror(-r));
	rc = IPMI_CC_RESPONSE_ERROR;
	goto finish;
	}

	// Traverse the UUID
	// Get the UUID octects separated by dash
	id_octet = strtok_r(uuid, "-", &tokptr);

	if (id_octet == NULL)
	{
	// Error
	fprintf(stderr, "Unexpected UUID format: %s", uuid);
	rc = IPMI_CC_RESPONSE_ERROR;
	goto finish;
	}

	while (id_octet != NULL)
	{
	// Calculate the octet string size since it varies
	// Divide it by 2 for the array size since 1 byte is built from 2 chars
	int tmp_size = strlen(id_octet)/2;

	for(i = 0; i < tmp_size; i++)
	{
	// Holder of the 2 chars that will become a byte
	char tmp_array[3] = {0};
	strncpy(tmp_array, id_octet, 2); // 2 chars at a time

	int resp_byte = strtoul(tmp_array, NULL, 16); // Convert to hex byte
	// Copy end to first
	memcpy((void*)&resp_uuid[resp_loc], &resp_byte, 1);
	resp_loc--;
	id_octet+=2; // Finished with the 2 chars, advance
	}
	id_octet=strtok_r(NULL, "-", &tokptr); // Get next octet
	}

	// Data length
	*data_len = resp_size;

	// Pack the actual response
	memcpy(response, &resp_uuid, *data_len);

	finish:
	sd_bus_error_free(&error);
	reply = sd_bus_message_unref(reply);
	free(busname);

	return rc;
	}

	ipmi_ret_t ipmi_app_get_bt_capabilities(ipmi_netfn_t netfn, ipmi_cmd_t cmd,
	ipmi_request_t request, ipmi_response_t response,
	ipmi_data_len_t data_len, ipmi_context_t context)
	{
	printf("Handling Netfn:[0x%X], Cmd:[0x%X]\n",netfn,cmd);

	// Status code.
	ipmi_ret_t rc = IPMI_CC_OK;

	// Per IPMI 2.0 spec, the input and output buffer size must be the max
	// buffer size minus one byte to allocate space for the length byte.
	uint8_t str[] = {0x01, MAX_IPMI_BUFFER-1, MAX_IPMI_BUFFER-1, 0x0A, 0x01};

	// Data length
	*data_len = sizeof(str);

	// Pack the actual response
	memcpy(response, &str, *data_len);

	return rc;
	}

	ipmi_ret_t ipmi_app_wildcard_handler(ipmi_netfn_t netfn, ipmi_cmd_t cmd,
	ipmi_request_t request, ipmi_response_t response,
	ipmi_data_len_t data_len, ipmi_context_t context)
	{
	printf("Handling WILDCARD Netfn:[0x%X], Cmd:[0x%X]\n",netfn, cmd);

	// Status code.
	ipmi_ret_t rc = IPMI_CC_INVALID;

	*data_len = strlen("THIS IS WILDCARD");

	// Now pack actual response
	memcpy(response, "THIS IS WILDCARD", *data_len);

	return rc;
	}

	ipmi_ret_t ipmi_app_get_sys_guid(ipmi_netfn_t netfn, ipmi_cmd_t cmd,
	ipmi_request_t request, ipmi_response_t response,
	ipmi_data_len_t data_len, ipmi_context_t context)

	{
	ipmi_ret_t rc = IPMI_CC_OK;
	sdbusplus::bus::bus bus{ipmid_get_sd_bus_connection()};

	try
	{
	// Get the Inventory object implementing BMC interface
	ipmi::DbusObjectInfo bmcObject =
	ipmi::getDbusObject(bus, bmc_interface);

	// Read UUID property value from bmcObject
	// UUID is in RFC4122 format Ex: 61a39523-78f2-11e5-9862-e6402cfc3223
	auto variant = ipmi::getDbusProperty(
	bus, bmcObject.second, bmcObject.first, bmc_guid_interface,
	bmc_guid_property);
	std::string guidProp = variant.get<std::string>();

	// Erase "-" characters from the property value
	guidProp.erase(std::remove(guidProp.begin(), guidProp.end(), '-'),
	guidProp.end());

	auto guidPropLen = guidProp.length();
	// Validate UUID data
	// Divide by 2 as 1 byte is built from 2 chars
	if ( (guidPropLen <=0) \|\| ((guidPropLen/2) != bmc_guid_len) )

	{
	log<level::ERR>("Invalid UUID property value",
	entry("UUID_LENGTH=%d", guidPropLen));
	return IPMI_CC_RESPONSE_ERROR;
	}

	// Convert data in RFC4122(MSB) format to LSB format
	// Get 2 characters at a time as 1 byte is built from 2 chars and
	// convert to hex byte
	// TODO: Data printed for GUID command is not as per the
	// GUID format defined in IPMI specification 2.0 section 20.8
	// Ticket raised: https://sourceforge.net/p/ipmitool/bugs/501/
	uint8_t respGuid[bmc_guid_len];
	for (size_t i = 0, respLoc = (bmc_guid_len - 1);
	i < guidPropLen && respLoc >= 0; i += 2, respLoc--)
	{
	auto value = static_cast<uint8_t>(
	std::stoi(guidProp.substr(i, 2).c_str(), NULL, 16));
	respGuid[respLoc] = value;
	}

	*data_len = bmc_guid_len;
	memcpy(response, &respGuid, bmc_guid_len);
	}
	catch (const InternalFailure& e)
	{
	log<level::ERR>("Failed in reading BMC UUID property",
	entry("INTERFACE=%s", bmc_interface),
	entry("PROPERTY_INTERFACE=%s", bmc_guid_interface),
	entry("PROPERTY=%s", bmc_guid_property));
	return IPMI_CC_UNSPECIFIED_ERROR;
	}
	return rc;
	}

	void register_netfn_app_functions()
	{
	// <Get BT Interface Capabilities>
	printf("Registering NetFn:[0x%X], Cmd:[0x%X]\n",
	NETFUN_APP,
	IPMI_CMD_GET_CAP_BIT);
	ipmi_register_callback(NETFUN_APP,
	IPMI_CMD_GET_CAP_BIT,
	NULL,
	ipmi_app_get_bt_capabilities,
	PRIVILEGE_USER);

	// <Wildcard Command>
	printf("Registering NetFn:[0x%X], Cmd:[0x%X]\n",
	NETFUN_APP,
	IPMI_CMD_WILDCARD);
	ipmi_register_callback(NETFUN_APP,
	IPMI_CMD_WILDCARD,
	NULL,
	ipmi_app_wildcard_handler,
	PRIVILEGE_USER);

	// <Reset Watchdog Timer>
	printf("Registering NetFn:[0x%X], Cmd:[0x%X]\n",
	NETFUN_APP,
	IPMI_CMD_RESET_WD);
	ipmi_register_callback(NETFUN_APP,
	IPMI_CMD_RESET_WD,
	NULL,
	ipmi_app_reset_watchdog,
	PRIVILEGE_OPERATOR);

	// <Set Watchdog Timer>
	printf("Registering NetFn:[0x%X], Cmd:[0x%X]\n",
	NETFUN_APP,
	IPMI_CMD_SET_WD);
	ipmi_register_callback(NETFUN_APP,
	IPMI_CMD_SET_WD,
	NULL,
	ipmi_app_set_watchdog,
	PRIVILEGE_OPERATOR);

	// <Get Device ID>
	printf("Registering NetFn:[0x%X], Cmd:[0x%X]\n",
	NETFUN_APP,
	IPMI_CMD_GET_DEVICE_ID);
	ipmi_register_callback(NETFUN_APP,
	IPMI_CMD_GET_DEVICE_ID,
	NULL,
	ipmi_app_get_device_id,
	PRIVILEGE_USER);

	// <Get Self Test Results>
	printf("Registering NetFn:[0x%X], Cmd:[0x%X]\n",
	NETFUN_APP,
	IPMI_CMD_GET_SELF_TEST_RESULTS);
	ipmi_register_callback(NETFUN_APP,
	IPMI_CMD_GET_SELF_TEST_RESULTS,
	NULL,
	ipmi_app_get_self_test_results,
	PRIVILEGE_USER);

	// <Get Device GUID>
	printf("Registering NetFn:[0x%X], Cmd:[0x%X]\n",
	NETFUN_APP,
	IPMI_CMD_GET_DEVICE_GUID);
	ipmi_register_callback(NETFUN_APP,
	IPMI_CMD_GET_DEVICE_GUID,
	NULL,
	ipmi_app_get_device_guid,
	PRIVILEGE_USER);

	// <Set ACPI Power State>
	printf("Registering NetFn:[0x%X], Cmd:[0x%X]\n",
	NETFUN_APP,
	IPMI_CMD_SET_ACPI);
	ipmi_register_callback(NETFUN_APP,
	IPMI_CMD_SET_ACPI,
	NULL,
	ipmi_app_set_acpi_power_state,
	PRIVILEGE_ADMIN);

	// <Set Channel Access>
	printf("Registering NetFn:[0x%X], Cmd:[0x%X]\n",
	NETFUN_APP,
	IPMI_CMD_SET_CHAN_ACCESS);
	ipmi_register_callback(NETFUN_APP,
	IPMI_CMD_SET_CHAN_ACCESS,
	NULL,
	ipmi_set_channel_access,
	PRIVILEGE_ADMIN);

	// <Get Channel Access>
	printf("Registering NetFn:[0x%X], Cmd:[0x%X]\n",
	NETFUN_APP,
	IPMI_CMD_GET_CHANNEL_ACCESS);
	ipmi_register_callback(NETFUN_APP,
	IPMI_CMD_GET_CHANNEL_ACCESS,
	NULL,
	ipmi_get_channel_access,
	PRIVILEGE_USER);

	// <Get Channel Info Command>
	printf("Registering NetFn:[0x%X], Cmd:[0x%X]\n",
	NETFUN_APP,
	IPMI_CMD_GET_CHAN_INFO);
	ipmi_register_callback(NETFUN_APP,
	IPMI_CMD_GET_CHAN_INFO,
	NULL,
	ipmi_app_channel_info,
	PRIVILEGE_USER);

	// <Get System GUID Command>
	printf("Registering NetFn:[0x%X], Cmd:[0x%X]\n",
	NETFUN_APP,
	IPMI_CMD_GET_SYS_GUID);
	ipmi_register_callback(NETFUN_APP,
	IPMI_CMD_GET_SYS_GUID,
	NULL,
	ipmi_app_get_sys_guid,
	PRIVILEGE_USER);
	return;
	}