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 "types.hpp"
 #include "utils.hpp"

 #include <stdio.h>
 #include <string.h>
 #include <stdint.h>
 #include <systemd/sd-bus.h>
 #include <mapper.h>
 #include <array>
 #include <vector>
 #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";

 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 only supports the vx.x-x-[-x] format Will return -1 if not in  */
 /* the format this routine knows how to parse                               */
 /* version = v0.6-19-gf363f61-dirty                                         */
 /*            ^ ^ ^^          ^                                             */
 /*            | |  |----------|-- 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)
 {
     char *s, *token;
     uint16_t commits;

     if (*p != 'v')
         return -1;
     p++;

     s = strdup(p);
     token = strtok(s,".-");

     rev->major = (int8_t) atoi(token);

     token = strtok(NULL, ".-");
     rev->minor = (int8_t) atoi(token);

     // Capture the number of commits on top of the minor tag.
     // I'm using BE format like the ipmi spec asked for
     token = strtok(NULL,".-");

     if (token) {
         commits = (int16_t) atoi(token);
         rev->d[0] = (commits>>8) | (commits<<8);

         // commit number we skip
         token = strtok(NULL,".-");

     } else {
         rev->d[0] = 0;
     }

     // Any value of the optional parameter forces it to 1
     if (token)
         token = strtok(NULL,".-");

     rev->d[1] = (token != NULL) ? 1 : 0;

     free(s);
     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};
     ipmi_device_id_t dev_id{};

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

     // From IPMI spec, controller that have different application commands, or different
     // definitions of OEM fields, are expected to have different Device ID values.
     // Set to 0 now.

     // Device Revision is set to 0 now.
     // Bit7 identifies if device provide Device SDRs,  obmc don't have SDR,we use ipmi to
     // simulate SDR, hence the value:
     dev_id.revision = 0x80;

     // 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;

     // Additional device Support.
     // List the 'logical device' commands and functions that the controller supports
     // that are in addition to the mandatory IPM and Application commands.
     // [7] Chassis Device (device functions as chassis device per ICMB spec.)
     // [6] Bridge (device responds to Bridge NetFn commands)
     // [5] IPMB Event Generator
     // [4] IPMB Event Receiver
     // [3] FRU Inventory Device
     // [2] SEL Device
     // [1] SDR Repository Device
     // [0] Sensor Device
     // We support FRU/SEL/Sensor now:
     dev_id.addn_dev_support = 0x8D;

     // This value is the IANA number assigned to "IBM Platform Firmware
     // Division", which is also used by our service processor.  We may want
     // a different number or at least a different version?
     dev_id.manuf_id[0] = 0x41;
     dev_id.manuf_id[1] = 0xA7;
     dev_id.manuf_id[2] = 0x00;

     // Witherspoon's product ID is hardcoded to 4F42(ASCII 'OB').
     // TODO: openbmc/openbmc#495
     dev_id.prod_id[0] = 0x4F;
     dev_id.prod_id[1] = 0x42;

     // 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
     int resp_loc = resp_size-1; // Point resp end of array to save in reverse order
     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
     id_octet = strtok_r(uuid, "-", &tokptr); // Get the UUID octects separated by dash

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

             int resp_byte = strtoul(tmp_array, NULL, 16); // Convert to hex byte
             memcpy((void*)&resp_uuid[resp_loc], &resp_byte, 1); // Copy end to first
             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;
 }

 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);

     return;
 }
	#include "apphandler.h"
	#include "app/channel.hpp"
	#include "app/watchdog.hpp"
	#include "host-ipmid/ipmid-api.h"
	#include "ipmid.hpp"
	#include "types.hpp"
	#include "utils.hpp"

	#include <stdio.h>
	#include <string.h>
	#include <stdint.h>
	#include <systemd/sd-bus.h>
	#include <mapper.h>
	#include <array>
	#include <vector>
	#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";

	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 only supports the vx.x-x-[-x] format Will return -1 if not in */
	/* the format this routine knows how to parse */
	/* version = v0.6-19-gf363f61-dirty */
	/* ^ ^ ^^ ^ */
	/* \| \| \|----------\|-- 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)
	{
	char s, token;
	uint16_t commits;

	if (*p != 'v')
	return -1;
	p++;

	s = strdup(p);
	token = strtok(s,".-");

	rev->major = (int8_t) atoi(token);

	token = strtok(NULL, ".-");
	rev->minor = (int8_t) atoi(token);

	// Capture the number of commits on top of the minor tag.
	// I'm using BE format like the ipmi spec asked for
	token = strtok(NULL,".-");

	if (token) {
	commits = (int16_t) atoi(token);
	rev->d[0] = (commits>>8) \| (commits<<8);

	// commit number we skip
	token = strtok(NULL,".-");

	} else {
	rev->d[0] = 0;
	}

	// Any value of the optional parameter forces it to 1
	if (token)
	token = strtok(NULL,".-");

	rev->d[1] = (token != NULL) ? 1 : 0;

	free(s);
	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};
	ipmi_device_id_t dev_id{};

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

	// From IPMI spec, controller that have different application commands, or different
	// definitions of OEM fields, are expected to have different Device ID values.
	// Set to 0 now.

	// Device Revision is set to 0 now.
	// Bit7 identifies if device provide Device SDRs, obmc don't have SDR,we use ipmi to
	// simulate SDR, hence the value:
	dev_id.revision = 0x80;

	// 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;

	// Additional device Support.
	// List the 'logical device' commands and functions that the controller supports
	// that are in addition to the mandatory IPM and Application commands.
	// [7] Chassis Device (device functions as chassis device per ICMB spec.)
	// [6] Bridge (device responds to Bridge NetFn commands)
	// [5] IPMB Event Generator
	// [4] IPMB Event Receiver
	// [3] FRU Inventory Device
	// [2] SEL Device
	// [1] SDR Repository Device
	// [0] Sensor Device
	// We support FRU/SEL/Sensor now:
	dev_id.addn_dev_support = 0x8D;

	// This value is the IANA number assigned to "IBM Platform Firmware
	// Division", which is also used by our service processor. We may want
	// a different number or at least a different version?
	dev_id.manuf_id[0] = 0x41;
	dev_id.manuf_id[1] = 0xA7;
	dev_id.manuf_id[2] = 0x00;

	// Witherspoon's product ID is hardcoded to 4F42(ASCII 'OB').
	// TODO: openbmc/openbmc#495
	dev_id.prod_id[0] = 0x4F;
	dev_id.prod_id[1] = 0x42;

	// 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
	int resp_loc = resp_size-1; // Point resp end of array to save in reverse order
	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
	id_octet = strtok_r(uuid, "-", &tokptr); // Get the UUID octects separated by dash

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

	int resp_byte = strtoul(tmp_array, NULL, 16); // Convert to hex byte
	memcpy((void*)&resp_uuid[resp_loc], &resp_byte, 1); // Copy end to first
	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;
	}

	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);

	return;
	}