frup.c

/*
 * Copyright (C) 2003-2014 FreeIPMI Core Team
 * 
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 * 
 */
/*****************************************************************************\
 *  Copyright (C) 2007-2014 Lawrence Livermore National Security, LLC.
 *  Copyright (C) 2007 The Regents of the University of California.
 *  Produced at Lawrence Livermore National Laboratory (cf, DISCLAIMER).
 *  Written by Albert Chu <chu11@llnl.gov>
 *  UCRL-CODE-232183
 *
 *  This file is part of Ipmi-fru, a tool used for retrieving
 *  motherboard field replaceable unit (FRU) information. For details,
 *  see http://www.llnl.gov/linux/.
 *
 *  Ipmi-fru is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by the
 *  Free Software Foundation; either version 3 of the License, or (at your
 *  option) any later version.
 *
 *  Ipmi-fru is distributed in the hope that it will be useful, but
 *  WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
 *  or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 *  for more details.
 *
 *  You should have received a copy of the GNU General Public License along
 *  with Ipmi-fru.  If not, see <http://www.gnu.org/licenses/>.
\*****************************************************************************/
#include <stdio.h>
#include <unistd.h>
#include <string.h>
#include <time.h>
#include <systemd/sd-bus.h>

#define IPMI_FRU_PARSER_DEBUG 1
#define uint8_t unsigned char
#define uint32_t unsigned int

#define TEXTSTR(a) #a
# define ASSERT(x) \
do { \
if (0 == (x)) { \
fprintf(stderr, \
"Assertion failed: %s, " \
"%d at \'%s\'\n", \
__FILE__, \
__LINE__, \
TEXTSTR(a)); \
return -1; \
} \
} while (0)

#define IPMI_FRU_AREA_TYPE_LENGTH_FIELD_MAX            512
#define IPMI_FRU_SENTINEL_VALUE                        0xC1
#define IPMI_FRU_TYPE_LENGTH_TYPE_CODE_MASK            0xC0
#define IPMI_FRU_TYPE_LENGTH_TYPE_CODE_SHIFT           0x06
#define IPMI_FRU_TYPE_LENGTH_NUMBER_OF_DATA_BYTES_MASK 0x3F
#define IPMI_FRU_TYPE_LENGTH_TYPE_CODE_LANGUAGE_CODE   0x03

/* OpenBMC defines for Parser */
#define IPMI_FRU_AREA_INTERNAL_USE                     0x00
#define IPMI_FRU_AREA_CHASSIS_INFO                     0x01
#define IPMI_FRU_AREA_BOARD_INFO                       0x02
#define IPMI_FRU_AREA_PRODUCT_INFO                     0x03
#define IPMI_FRU_AREA_MULTI_RECORD                     0x04
#define IPMI_FRU_AREA_TYPE_MAX                         0x05

#define OPENBMC_VPD_KEY_LEN                            64
#define OPENBMC_VPD_VAL_LEN                            512

struct ipmi_fru_field
{
  uint8_t type_length_field[IPMI_FRU_AREA_TYPE_LENGTH_FIELD_MAX];
  /* store length of data stored in buffer */
  unsigned int type_length_field_length;
};

typedef struct ipmi_fru_field ipmi_fru_field_t;
/* 
 * FRU Parser 
 */

typedef struct ipmi_fru_area_info
{
    uint8_t off;
    uint8_t len;
} ipmi_fru_area_info_t;

typedef struct ipmi_fru_common_hdr
{
    uint8_t fmtver;
    uint8_t internal;
    uint8_t chassis;
    uint8_t board;
    uint8_t product;
    uint8_t multirec;
} __attribute__((packed)) ipmi_fru_common_hdr_t;

enum openbmc_vpd_key_id
{
  OPENBMC_VPD_KEY_CHASSIS_TYPE = 1, /* not a type/len */
  OPENBMC_VPD_KEY_CHASSIS_PART_NUM,
  OPENBMC_VPD_KEY_CHASSIS_SERIAL_NUM,
  OPENBMC_VPD_KEY_CHASSIS_MAX = OPENBMC_VPD_KEY_CHASSIS_SERIAL_NUM,
  /* TODO: chassis_custom_fields */

  OPENBMC_VPD_KEY_BOARD_MFG_DATE, /* not a type/len */
  OPENBMC_VPD_KEY_BOARD_MFR,
  OPENBMC_VPD_KEY_BOARD_NAME,
  OPENBMC_VPD_KEY_BOARD_SERIAL_NUM,
  OPENBMC_VPD_KEY_BOARD_PART_NUM,
  OPENBMC_VPD_KEY_BOARD_FRU_FILE_ID,
  OPENBMC_VPD_KEY_BOARD_MAX = OPENBMC_VPD_KEY_BOARD_FRU_FILE_ID,
  /* TODO: board_custom_fields */

  OPENBMC_VPD_KEY_PRODUCT_MFR,
  OPENBMC_VPD_KEY_PRODUCT_NAME,
  OPENBMC_VPD_KEY_PRODUCT_PART_MODEL_NUM,
  OPENBMC_VPD_KEY_PRODUCT_VER,
  OPENBMC_VPD_KEY_PRODUCT_SERIAL_NUM,
  OPENBMC_VPD_KEY_PRODUCT_ASSET_TAG,
  OPENBMC_VPD_KEY_PRODUCT_FRU_FILE_ID,
  OPENBMC_VPD_KEY_PRODUCT_MAX = OPENBMC_VPD_KEY_PRODUCT_FRU_FILE_ID,
  /* TODO: product_custom_fields */

  OPENBMC_VPD_KEY_MAX,
  
};

const char* vpd_key_names [] = 
{
  "Key Names Table Start", 
  "Chassis Type", /*OPENBMC_VPD_KEY_CHASSIS_TYPE*/
  "Chassis Part Number", /*OPENBMC_VPD_KEY_CHASSIS_PART_NUM,*/
  "Chassis Serial Number", /*OPENBMC_VPD_KEY_CHASSIS_SERIAL_NUM,*/

  /* TODO: chassis_custom_fields */

  "Board Mfg Date", /* OPENBMC_VPD_KEY_BOARD_MFG_DATE, */ /* not a type/len */
  "Board Manufacturer", /* OPENBMC_VPD_KEY_BOARD_MFR, */
  "Board Name", /* OPENBMC_VPD_KEY_BOARD_NAME, */
  "Board Serial Number", /* OPENBMC_VPD_KEY_BOARD_SERIAL_NUM, */
  "Board Part Number", /* OPENBMC_VPD_KEY_BOARD_PART_NUM, */
  "Board FRU File ID", /* OPENBMC_VPD_KEY_BOARD_FRU_FILE_ID, */
  /* TODO: board_custom_fields */

  "Product Manufacturer", /* OPENBMC_VPD_KEY_PRODUCT_MFR, */
  "Product Name", /* OPENBMC_VPD_KEY_PRODUCT_NAME, */
  "Product Model Number", /* OPENBMC_VPD_KEY_PRODUCT_PART_MODEL_NUM, */
  "Product Version", /* OPENBMC_VPD_KEY_PRODUCT_VER, */
  "Product Serial Number", /* OPENBMC_VPD_KEY_PRODUCT_SERIAL_NUM, */
  "Product Asset Tag", /* OPENBMC_VPD_KEY_PRODUCT_ASSET_TAG, */
  "Product FRU File ID", /* OPENBMC_VPD_KEY_PRODUCT_FRU_FILE_ID, */
  /* TODO: product_custom_fields */

  "Key Names Table End" /*OPENBMC_VPD_KEY_MAX,*/
};


/*
 * --------------------------------------------------------------------
 *
 * --------------------------------------------------------------------
 */

static size_t _to_time_str (uint32_t mfg_date_time, char* timestr, uint32_t len)
{
    struct tm tm;
    time_t t;
    size_t s;

    ASSERT (timestr);
    ASSERT (len);

    memset (&tm, '\0', sizeof (struct tm));

    t = mfg_date_time;
    gmtime_r (&t, &tm);
    s = strftime (timestr, len, "%F - %H:%M:%S", &tm);

    return s;
}

/* private method to parse type/length */
static int
_parse_type_length (const void *areabuf,
                    unsigned int areabuflen,
                    unsigned int current_area_offset,
                    uint8_t *number_of_data_bytes,
                    ipmi_fru_field_t *field)
{
  const uint8_t *areabufptr = (const uint8_t*) areabuf;
  uint8_t type_length;
  uint8_t type_code;

  ASSERT (areabuf);
  ASSERT (areabuflen);
  ASSERT (number_of_data_bytes);
  
  type_length = areabufptr[current_area_offset];

  /* ipmi workaround 
   *
   * dell p weredge r610
   *
   * my reading of the fru spec is that all non-custom fields are
   * required to be listed by the vendor.  however, on this
   * motherboard, some areas list this, indicating that there is
   * no more data to be parsed.  so now, for "required" fields, i
   * check to see if the type-length field is a sentinel before
   * calling this function.
   */

  ASSERT (type_length != IPMI_FRU_SENTINEL_VALUE);

  type_code = (type_length & IPMI_FRU_TYPE_LENGTH_TYPE_CODE_MASK) >> IPMI_FRU_TYPE_LENGTH_TYPE_CODE_SHIFT;
  (*number_of_data_bytes) = type_length & IPMI_FRU_TYPE_LENGTH_NUMBER_OF_DATA_BYTES_MASK;

  /* special case: this shouldn't be a length of 0x01 (see type/length
   * byte format in fru information storage definition).
   */
  if (type_code == IPMI_FRU_TYPE_LENGTH_TYPE_CODE_LANGUAGE_CODE
      && (*number_of_data_bytes) == 0x01)
    {
      return (-1);
    }

  if ((current_area_offset + 1 + (*number_of_data_bytes)) > areabuflen)
    {
      return (-1);
    }

  if (field)
    {
      memset (field->type_length_field,
              '\0',
              IPMI_FRU_AREA_TYPE_LENGTH_FIELD_MAX);
      memcpy (field->type_length_field,
              &areabufptr[current_area_offset],
              1 + (*number_of_data_bytes));
      field->type_length_field_length = 1 + (*number_of_data_bytes);
    }
      
  return (0);
}
                    
int
ipmi_fru_chassis_info_area (const void *areabuf,
			    unsigned int areabuflen,
			    uint8_t *chassis_type,
			    ipmi_fru_field_t *chassis_part_number,
			    ipmi_fru_field_t *chassis_serial_number,
			    ipmi_fru_field_t *chassis_custom_fields,
			    unsigned int chassis_custom_fields_len)
{
  const uint8_t *areabufptr = (const uint8_t*) areabuf;
  unsigned int area_offset = 0;
  unsigned int custom_fields_index = 0;
  uint8_t number_of_data_bytes;
  int rv = -1;

  if (!areabuf || !areabuflen)
    {
      return (-1);
    }

  if (chassis_part_number)
    memset (chassis_part_number,
            '\0',
            sizeof (ipmi_fru_field_t));
  if (chassis_serial_number)
    memset (chassis_serial_number,
            '\0',
            sizeof (ipmi_fru_field_t));
  if (chassis_custom_fields && chassis_custom_fields_len)
    memset (chassis_custom_fields,
            '\0',
            sizeof (ipmi_fru_field_t) * chassis_custom_fields_len);

  if (chassis_type)
    (*chassis_type) = areabufptr[area_offset];
  area_offset++;

  if (areabufptr[area_offset] == IPMI_FRU_SENTINEL_VALUE)
    goto out;

  if (_parse_type_length (areabufptr,
                          areabuflen,
                          area_offset,
                          &number_of_data_bytes,
                          chassis_part_number) < 0)
    goto cleanup;
  area_offset += 1;          /* type/length byte */
  area_offset += number_of_data_bytes;

  if (areabufptr[area_offset] == IPMI_FRU_SENTINEL_VALUE)
    goto out;

  if (_parse_type_length (areabufptr,
                          areabuflen,
                          area_offset,
                          &number_of_data_bytes,
                          chassis_serial_number) < 0)
    goto cleanup;
  area_offset += 1;          /* type/length byte */
  area_offset += number_of_data_bytes;

  while (area_offset < areabuflen
         && areabufptr[area_offset] != IPMI_FRU_SENTINEL_VALUE)
    {
      ipmi_fru_field_t *field_ptr = NULL;

      if (chassis_custom_fields && chassis_custom_fields_len)
        {
          if (custom_fields_index < chassis_custom_fields_len)
            field_ptr = &chassis_custom_fields[custom_fields_index];
          else
            {
              goto cleanup;
            }
        }

      if (_parse_type_length (areabufptr,
                              areabuflen,
                              area_offset,
                              &number_of_data_bytes,
                              field_ptr) < 0)
        goto cleanup;

      area_offset += 1;          /* type/length byte */
      area_offset += number_of_data_bytes;
      custom_fields_index++;
    }


 out:
  rv = 0;
 cleanup:
  return (rv);
}

int
ipmi_fru_board_info_area (const void *areabuf,
			  unsigned int areabuflen,
			  uint8_t *language_code,
			  uint32_t *mfg_date_time,
			  ipmi_fru_field_t *board_manufacturer,
			  ipmi_fru_field_t *board_product_name,
			  ipmi_fru_field_t *board_serial_number,
			  ipmi_fru_field_t *board_part_number,
			  ipmi_fru_field_t *board_fru_file_id,
			  ipmi_fru_field_t *board_custom_fields,
			  unsigned int board_custom_fields_len)
{
  const uint8_t *areabufptr = (const uint8_t*) areabuf;
  uint32_t mfg_date_time_tmp = 0;
  unsigned int area_offset = 0;
  unsigned int custom_fields_index = 0;
  uint8_t number_of_data_bytes;
  int rv = -1;

  if (!areabuf || !areabuflen)
    {
      return (-1);
    }

  if (board_manufacturer)
    memset (board_manufacturer,
            '\0',
            sizeof (ipmi_fru_field_t));
  if (board_product_name)
    memset (board_product_name,
            '\0',
            sizeof (ipmi_fru_field_t));
  if (board_serial_number)
    memset (board_serial_number,
            '\0',
            sizeof (ipmi_fru_field_t));
  if (board_part_number)
    memset (board_part_number,
            '\0',
            sizeof (ipmi_fru_field_t));
  if (board_fru_file_id)
    memset (board_fru_file_id,
            '\0',
            sizeof (ipmi_fru_field_t));
  if (board_custom_fields && board_custom_fields_len)
    memset (board_custom_fields,
            '\0',
            sizeof (ipmi_fru_field_t) * board_custom_fields_len);

  if (language_code)
    (*language_code) = areabufptr[area_offset];
  area_offset++;

  if (mfg_date_time)
    {
      struct tm tm;
      time_t t;

      /* mfg_date_time is little endian - see spec */
      mfg_date_time_tmp |= areabufptr[area_offset];
      area_offset++;
      mfg_date_time_tmp |= (areabufptr[area_offset] << 8);
      area_offset++;
      mfg_date_time_tmp |= (areabufptr[area_offset] << 16);
      area_offset++;
      
      /* mfg_date_time is in minutes, so multiple by 60 to get seconds */
      mfg_date_time_tmp *= 60;

      /* posix says individual calls need not clear/set all portions of
       * 'struct tm', thus passing 'struct tm' between functions could
       * have issues.  so we need to memset.
       */
      memset (&tm, '\0', sizeof(struct tm));

      /* in fru, epoch is 0:00 hrs 1/1/96
       *
       * so convert into ansi epoch
       */

      tm.tm_year = 96;          /* years since 1900 */
      tm.tm_mon = 0;            /* months since january */
      tm.tm_mday = 1;           /* 1-31 */
      tm.tm_hour = 0;
      tm.tm_min = 0;
      tm.tm_sec = 0;
      tm.tm_isdst = -1;

      if ((t = mktime (&tm)) == (time_t)-1)
        {
          goto cleanup;
        }

      mfg_date_time_tmp += (uint32_t)t;
      (*mfg_date_time) = mfg_date_time_tmp;
    }
  else
    area_offset += 3;

  if (areabufptr[area_offset] == IPMI_FRU_SENTINEL_VALUE)
    goto out;

  if (_parse_type_length (areabufptr,
                          areabuflen,
                          area_offset,
                          &number_of_data_bytes,
                          board_manufacturer) < 0)
    goto cleanup;
  area_offset += 1;          /* type/length byte */
  area_offset += number_of_data_bytes;

  if (areabufptr[area_offset] == IPMI_FRU_SENTINEL_VALUE)
    goto out;

  if (_parse_type_length (areabufptr,
                          areabuflen,
                          area_offset,
                          &number_of_data_bytes,
                          board_product_name) < 0)
    goto cleanup;
  area_offset += 1;          /* type/length byte */
  area_offset += number_of_data_bytes;

  if (areabufptr[area_offset] == IPMI_FRU_SENTINEL_VALUE)
    goto out;

  if (_parse_type_length (areabufptr,
                          areabuflen,
                          area_offset,
                          &number_of_data_bytes,
                          board_serial_number) < 0)
    goto cleanup;
  area_offset += 1;          /* type/length byte */
  area_offset += number_of_data_bytes;

  if (areabufptr[area_offset] == IPMI_FRU_SENTINEL_VALUE)
    goto out;

  if (_parse_type_length (areabufptr,
                          areabuflen,
                          area_offset,
                          &number_of_data_bytes,
                          board_part_number) < 0)
    goto cleanup;
  area_offset += 1;          /* type/length byte */
  area_offset += number_of_data_bytes;

  if (areabufptr[area_offset] == IPMI_FRU_SENTINEL_VALUE)
    goto out;

  if (_parse_type_length (areabufptr,
                          areabuflen,
                          area_offset,
                          &number_of_data_bytes,
                          board_fru_file_id) < 0)
    goto cleanup;
  area_offset += 1;          /* type/length byte */
  area_offset += number_of_data_bytes;

  while (area_offset < areabuflen
         && areabufptr[area_offset] != IPMI_FRU_SENTINEL_VALUE)
    {
      ipmi_fru_field_t *field_ptr = NULL;

      if (board_custom_fields && board_custom_fields_len)
        {
          if (custom_fields_index < board_custom_fields_len)
            field_ptr = &board_custom_fields[custom_fields_index];
          else
            {
              goto cleanup;
            }
        }

      if (_parse_type_length (areabufptr,
                              areabuflen,
                              area_offset,
                              &number_of_data_bytes,
                              field_ptr) < 0)
        goto cleanup;

      area_offset += 1;          /* type/length byte */
      area_offset += number_of_data_bytes;
      custom_fields_index++;
    }

 out:
  rv = 0;
 cleanup:
  return (rv);
}

int
ipmi_fru_product_info_area (const void *areabuf,
			    unsigned int areabuflen,
			    uint8_t *language_code,
			    ipmi_fru_field_t *product_manufacturer_name,
			    ipmi_fru_field_t *product_name,
			    ipmi_fru_field_t *product_part_model_number,
			    ipmi_fru_field_t *product_version,
			    ipmi_fru_field_t *product_serial_number,
			    ipmi_fru_field_t *product_asset_tag,
			    ipmi_fru_field_t *product_fru_file_id,
			    ipmi_fru_field_t *product_custom_fields,
			    unsigned int product_custom_fields_len)
{
  const uint8_t *areabufptr = (const uint8_t*) areabuf;
  unsigned int area_offset = 0;
  unsigned int custom_fields_index = 0;
  uint8_t number_of_data_bytes;
  int rv = -1;

  if (!areabuf || !areabuflen)
    {
      return (-1);
    }

  if (product_manufacturer_name)
    memset (product_manufacturer_name,
            '\0',
            sizeof (ipmi_fru_field_t));
  if (product_name)
    memset (product_name,
            '\0',
            sizeof (ipmi_fru_field_t));
  if (product_part_model_number)
    memset (product_part_model_number,
            '\0',
            sizeof (ipmi_fru_field_t));
  if (product_version)
    memset (product_version,
            '\0',
            sizeof (ipmi_fru_field_t));
  if (product_serial_number)
    memset (product_serial_number,
            '\0',
            sizeof (ipmi_fru_field_t));
  if (product_asset_tag)
    memset (product_asset_tag,
            '\0',
            sizeof (ipmi_fru_field_t));
  if (product_fru_file_id)
    memset (product_fru_file_id,
            '\0',
            sizeof (ipmi_fru_field_t));
  if (product_custom_fields && product_custom_fields_len)
    memset (product_custom_fields,
            '\0',
            sizeof (ipmi_fru_field_t) * product_custom_fields_len);

  if (language_code)
    (*language_code) = areabufptr[area_offset];
  area_offset++;

  if (areabufptr[area_offset] == IPMI_FRU_SENTINEL_VALUE)
    goto out;

  if (_parse_type_length (areabufptr,
                          areabuflen,
                          area_offset,
                          &number_of_data_bytes,
                          product_manufacturer_name) < 0)
    goto cleanup;
  area_offset += 1;          /* type/length byte */
  area_offset += number_of_data_bytes;

  if (areabufptr[area_offset] == IPMI_FRU_SENTINEL_VALUE)
    goto out;

  if (_parse_type_length (areabufptr,
                          areabuflen,
                          area_offset,
                          &number_of_data_bytes,
                          product_name) < 0)
    goto cleanup;
  area_offset += 1;          /* type/length byte */
  area_offset += number_of_data_bytes;

  if (areabufptr[area_offset] == IPMI_FRU_SENTINEL_VALUE)
    goto out;

  if (_parse_type_length (areabufptr,
                          areabuflen,
                          area_offset,
                          &number_of_data_bytes,
                          product_part_model_number) < 0)
    goto cleanup;
  area_offset += 1;          /* type/length byte */
  area_offset += number_of_data_bytes;

  if (areabufptr[area_offset] == IPMI_FRU_SENTINEL_VALUE)
    goto out;

  if (_parse_type_length (areabufptr,
                          areabuflen,
                          area_offset,
                          &number_of_data_bytes,
                          product_version) < 0)
    goto cleanup;
  area_offset += 1;          /* type/length byte */
  area_offset += number_of_data_bytes;

  if (areabufptr[area_offset] == IPMI_FRU_SENTINEL_VALUE)
    goto out;

  if (_parse_type_length (areabufptr,
                          areabuflen,
                          area_offset,
                          &number_of_data_bytes,
                          product_serial_number) < 0)
    goto cleanup;
  area_offset += 1;          /* type/length byte */
  area_offset += number_of_data_bytes;

  if (areabufptr[area_offset] == IPMI_FRU_SENTINEL_VALUE)
    goto out;

  if (_parse_type_length (areabufptr,
                          areabuflen,
                          area_offset,
                          &number_of_data_bytes,
                          product_asset_tag) < 0)
    goto cleanup;
  area_offset += 1;          /* type/length byte */
  area_offset += number_of_data_bytes;

  if (areabufptr[area_offset] == IPMI_FRU_SENTINEL_VALUE)
    goto out;

  if (_parse_type_length (areabufptr,
                          areabuflen,
                          area_offset,
                          &number_of_data_bytes,
                          product_fru_file_id) < 0)
    goto cleanup;
  area_offset += 1;          /* type/length byte */
  area_offset += number_of_data_bytes;

  while (area_offset < areabuflen
         && areabufptr[area_offset] != IPMI_FRU_SENTINEL_VALUE)
    {
      ipmi_fru_field_t *field_ptr = NULL;

      if (product_custom_fields && product_custom_fields_len)
        {
          if (custom_fields_index < product_custom_fields_len)
            field_ptr = &product_custom_fields[custom_fields_index];
          else
            {
              goto cleanup;
            }
        }

      if (_parse_type_length (areabufptr,
                              areabuflen,
                              area_offset,
                              &number_of_data_bytes,
                              field_ptr) < 0)
        goto cleanup;

      area_offset += 1;          /* type/length byte */
      area_offset += number_of_data_bytes;
      custom_fields_index++;
    }


 out:
  rv = 0;
 cleanup:
  return (rv);
}


int
parse_fru (const void* msgbuf, sd_bus_message* vpdtbl)
{
  int ret = 0;
  int rv = -1;
  int i = 0;
  ipmi_fru_area_info_t fru_area_info [ IPMI_FRU_AREA_TYPE_MAX ];
  ipmi_fru_common_hdr_t* chdr = NULL;
  uint8_t* hdr = NULL;
  char timestr [ OPENBMC_VPD_VAL_LEN ];


  ipmi_fru_field_t vpd_info [ OPENBMC_VPD_KEY_MAX ];
  /*char ipmi_fru_field_str [ IPMI_FRU_AREA_TYPE_LENGTH_FIELD_MAX ];
  uint32_t len=0;*/
  const uint8_t* ipmi_fru_field_str;

  /* Chassis */
  uint8_t chassis_type;

  /* Board */
  uint32_t mfg_date_time;

  /* Product */
  unsigned int product_custom_fields_len;

  ASSERT (msgbuf);
  ASSERT (vpdtbl);

  for (i=0; i<OPENBMC_VPD_KEY_MAX; i++)
  {
    memset (vpd_info[i].type_length_field, '\0', IPMI_FRU_AREA_TYPE_LENGTH_FIELD_MAX);
    vpd_info[i].type_length_field_length = 0;
  }

  for (i=0; i<IPMI_FRU_AREA_TYPE_MAX; i++)
  {
    fru_area_info [ i ].off = 0;
    fru_area_info [ i ].len = 0;
  }

  chdr = (ipmi_fru_common_hdr_t*) msgbuf;
  hdr  = (uint8_t*) msgbuf;

  fru_area_info [ IPMI_FRU_AREA_INTERNAL_USE ].off = chdr->internal;
  fru_area_info [ IPMI_FRU_AREA_CHASSIS_INFO ].off = chdr->chassis;
  fru_area_info [ IPMI_FRU_AREA_BOARD_INFO   ].off = chdr->board;
  fru_area_info [ IPMI_FRU_AREA_PRODUCT_INFO ].off = chdr->product;
  fru_area_info [ IPMI_FRU_AREA_MULTI_RECORD ].off = chdr->multirec;

  if (chdr->internal)
  {
    fru_area_info [ IPMI_FRU_AREA_INTERNAL_USE ].len =  8*(*(hdr+8*chdr->internal+1));
    
    /* TODO: Parse internal use area */
  }

  if (chdr->chassis)
  {
    fru_area_info [ IPMI_FRU_AREA_CHASSIS_INFO ].len = 8*(*(hdr+8*chdr->chassis+1));
    ipmi_fru_chassis_info_area (hdr+8*chdr->chassis+2,
        fru_area_info [ IPMI_FRU_AREA_CHASSIS_INFO ].len,
        &chassis_type,
        &vpd_info [OPENBMC_VPD_KEY_CHASSIS_PART_NUM],
        &vpd_info [OPENBMC_VPD_KEY_CHASSIS_SERIAL_NUM],
        NULL, 0);
  }
    
  if (chdr->board)
  {
    fru_area_info [ IPMI_FRU_AREA_BOARD_INFO ].len = 8*(*(hdr+8*chdr->board+1));
    ipmi_fru_board_info_area (hdr+8*chdr->board+2,
        fru_area_info [ IPMI_FRU_AREA_BOARD_INFO ].len,
        NULL,
        &mfg_date_time,
        &vpd_info [OPENBMC_VPD_KEY_BOARD_MFR],
        &vpd_info [OPENBMC_VPD_KEY_BOARD_NAME],
        &vpd_info [OPENBMC_VPD_KEY_BOARD_SERIAL_NUM],
        &vpd_info [OPENBMC_VPD_KEY_BOARD_PART_NUM],
        &vpd_info [OPENBMC_VPD_KEY_BOARD_FRU_FILE_ID],
        NULL, 0);
  }

  if (chdr->product)
  {
    fru_area_info [ IPMI_FRU_AREA_PRODUCT_INFO ].len = 8*(*(hdr+8*chdr->product+1));
    ipmi_fru_product_info_area (hdr+8*chdr->product+2,
        fru_area_info [ IPMI_FRU_AREA_PRODUCT_INFO ].len,
        NULL,
        &vpd_info [OPENBMC_VPD_KEY_PRODUCT_MFR],
        &vpd_info [OPENBMC_VPD_KEY_PRODUCT_NAME],
        &vpd_info [OPENBMC_VPD_KEY_PRODUCT_PART_MODEL_NUM],
        &vpd_info [OPENBMC_VPD_KEY_PRODUCT_VER],
        &vpd_info [OPENBMC_VPD_KEY_PRODUCT_SERIAL_NUM],
        &vpd_info [OPENBMC_VPD_KEY_PRODUCT_ASSET_TAG],
        &vpd_info [OPENBMC_VPD_KEY_PRODUCT_FRU_FILE_ID],
        NULL, 0);
  }

  if (chdr->multirec)
  {
    fru_area_info [ IPMI_FRU_AREA_MULTI_RECORD ].len = 8*(*(hdr+8*chdr->multirec+1));
    /* TODO: Parse multi record area */
  }

  for (i=0; i<IPMI_FRU_AREA_TYPE_MAX; i++)
  {
#if IPMI_FRU_PARSER_DEBUG
    printf ("IPMI_FRU_AREA_TYPE=[%d] : Offset=[%d] : Len=[%d]\n", i, fru_area_info [i].off, fru_area_info[i].len);
#else
;
#endif
  }

  /* Populate VPD Table */
  for (i=1; i<OPENBMC_VPD_KEY_MAX; i++)
  {
    if (i==OPENBMC_VPD_KEY_CHASSIS_TYPE)
    {
        sd_bus_message_append (vpdtbl, "{sv}", vpd_key_names[i], "y", chassis_type);
#if IPMI_FRU_PARSER_DEBUG
        printf ("[%s] = [%d]\n", vpd_key_names[i], chassis_type);
#else
;
#endif
        continue;
    }

    if (i==OPENBMC_VPD_KEY_BOARD_MFG_DATE)
    {
        _to_time_str (mfg_date_time, timestr, OPENBMC_VPD_VAL_LEN);
        sd_bus_message_append (vpdtbl, "{sv}", vpd_key_names[i], "s", timestr);
#if IPMI_FRU_PARSER_DEBUG
        printf ("[%s] = [%d]\n", vpd_key_names[i], mfg_date_time);
#else
;
#endif
        continue;
    }
    
    /* FIXME: Field type encoding *ASSUMED* to be *BINARY* */
    ipmi_fru_field_str = (unsigned char*) &(vpd_info[i].type_length_field) + 1;
    sd_bus_message_append (vpdtbl, "{sv}", vpd_key_names[i], "s", ipmi_fru_field_str); 
    if (vpd_info[i].type_length_field_length)
    {
#if IPMI_FRU_PARSER_DEBUG
        printf ("[%s] = [%s]\n", vpd_key_names[i], ipmi_fru_field_str);
#else
;
#endif
    }
  }

 out:
  rv = 0;
 cleanup:
  return (rv);
}

int parse_fru_area (const uint8_t area, const void* msgbuf, const uint8_t len, sd_bus_message* vpdtbl)
{
  int ret = 0;
  int rv = -1;
  int i = 0;
  ipmi_fru_area_info_t fru_area_info [ IPMI_FRU_AREA_TYPE_MAX ];
  ipmi_fru_common_hdr_t* chdr = NULL;
  uint8_t* hdr = NULL;
  const uint8_t* ipmi_fru_field_str=NULL;
  char timestr [ OPENBMC_VPD_VAL_LEN ];


  ipmi_fru_field_t vpd_info [ OPENBMC_VPD_KEY_MAX ];
  for (i=0; i<OPENBMC_VPD_KEY_MAX; i++)
  {
    memset (vpd_info[i].type_length_field, '\0', IPMI_FRU_AREA_TYPE_LENGTH_FIELD_MAX);
    vpd_info[i].type_length_field_length = 0;
  }

  /* Chassis */
  uint8_t chassis_type;

  /* Board */
  uint32_t mfg_date_time;

  /* Product */
  unsigned int product_custom_fields_len;

  ASSERT (msgbuf);
  ASSERT (vpdtbl);

  switch (area)
  {
    case IPMI_FRU_AREA_CHASSIS_INFO:
        ipmi_fru_chassis_info_area (msgbuf,
            len,
            &chassis_type,
            &vpd_info [OPENBMC_VPD_KEY_CHASSIS_PART_NUM],
            &vpd_info [OPENBMC_VPD_KEY_CHASSIS_SERIAL_NUM],
            NULL, 0);

          /* Populate VPD Table */
          for (i=1; i<=OPENBMC_VPD_KEY_CHASSIS_MAX; i++)
          {
            if (i==OPENBMC_VPD_KEY_CHASSIS_TYPE)
            {
                sd_bus_message_append (vpdtbl, "{sv}", vpd_key_names[i], "y", chassis_type);
#if IPMI_FRU_PARSER_DEBUG
                printf ("Chassis : [%s] = [%d]\n", vpd_key_names[i], chassis_type);
#else
;
#endif
                continue;
            }
            ipmi_fru_field_str = (unsigned char*) &(vpd_info[i].type_length_field) + 1;
            sd_bus_message_append (vpdtbl, "{sv}", vpd_key_names[i], "s", ipmi_fru_field_str);
#if IPMI_FRU_PARSER_DEBUG
            printf ("Chassis : [%s] = [%s]\n", vpd_key_names[i], ipmi_fru_field_str);
#else
;
#endif
          }
        break;
    case IPMI_FRU_AREA_BOARD_INFO:
            ipmi_fru_board_info_area (msgbuf, 
                len,
                NULL,
                &mfg_date_time,
                &vpd_info [OPENBMC_VPD_KEY_BOARD_MFR],
                &vpd_info [OPENBMC_VPD_KEY_BOARD_NAME],
                &vpd_info [OPENBMC_VPD_KEY_BOARD_SERIAL_NUM],
                &vpd_info [OPENBMC_VPD_KEY_BOARD_PART_NUM],
                &vpd_info [OPENBMC_VPD_KEY_BOARD_FRU_FILE_ID],
                NULL, 0);

          /* Populate VPD Table */
            for (i=OPENBMC_VPD_KEY_BOARD_MFR; i<=OPENBMC_VPD_KEY_BOARD_MAX; i++)
            {
                if (i==OPENBMC_VPD_KEY_BOARD_MFG_DATE)
                {
                    _to_time_str (mfg_date_time, timestr, OPENBMC_VPD_VAL_LEN);
                    sd_bus_message_append (vpdtbl, "{sv}", vpd_key_names[i], "s", timestr);
#if IPMI_FRU_PARSER_DEBUG
                    printf ("Board : [%s] = [%d]\n", vpd_key_names[i], mfg_date_time);
#else
;
#endif
                    continue;
                }
                ipmi_fru_field_str = (unsigned char*) &(vpd_info[i].type_length_field) + 1;
                sd_bus_message_append (vpdtbl, "{sv}", vpd_key_names[i], "s", ipmi_fru_field_str);
#if IPMI_FRU_PARSER_DEBUG
                printf ("Board : [%s] = [%s]\n", vpd_key_names[i], ipmi_fru_field_str);
#else
;
#endif
            }
            break;
    case IPMI_FRU_AREA_PRODUCT_INFO:
            ipmi_fru_product_info_area (msgbuf,
                len,
                NULL,
                &vpd_info [OPENBMC_VPD_KEY_PRODUCT_MFR],
                &vpd_info [OPENBMC_VPD_KEY_PRODUCT_NAME],
                &vpd_info [OPENBMC_VPD_KEY_PRODUCT_PART_MODEL_NUM],
                &vpd_info [OPENBMC_VPD_KEY_PRODUCT_VER],
                &vpd_info [OPENBMC_VPD_KEY_PRODUCT_SERIAL_NUM],
                &vpd_info [OPENBMC_VPD_KEY_PRODUCT_ASSET_TAG],
                &vpd_info [OPENBMC_VPD_KEY_PRODUCT_FRU_FILE_ID],
                NULL, 0);
            for (i=OPENBMC_VPD_KEY_PRODUCT_MFR; i<=OPENBMC_VPD_KEY_PRODUCT_MAX; i++)
            {
                ipmi_fru_field_str = (unsigned char*) &(vpd_info[i].type_length_field) + 1;
                sd_bus_message_append (vpdtbl, "{sv}", vpd_key_names[i], "s", ipmi_fru_field_str);
#if IPMI_FRU_PARSER_DEBUG
                printf ("Product : [%s] = [%s]\n", vpd_key_names[i], ipmi_fru_field_str);
#else
;
#endif
            }
            break;
    defualt:
    /* TODO: Parse Multi Rec / Internal use area */
    break;
  }

 out:
  rv = 0;
 cleanup:
  return (rv);
}