/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License (the "License").
 * You may not use this file except in compliance with the License.
 *
 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
 * or http://www.opensolaris.org/os/licensing.
 * See the License for the specific language governing permissions
 * and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
 * If applicable, add the following below this CDDL HEADER, with the
 * fields enclosed by brackets "[]" replaced with your own identifying
 * information: Portions Copyright [yyyy] [name of copyright owner]
 *
 * CDDL HEADER END
 */

/*
 * Copyright (c) 2009, 2010, Oracle and/or its affiliates. All rights reserved.
 */

#include <stdio.h>
#include <stdlib.h>
#include <alloca.h>
#include <sys/byteorder.h>
#include "fru_access_impl.h"
#include "fruraw.h"

#pragma init(initialize_raw_access)

static hash_obj_t       *hash_table[TABLE_SIZE];
extern raw_list_t       *g_raw;

static void
initialize_raw_access(void)
{
        int     count;

        for (count = 0; count < TABLE_SIZE; count++) {
                hash_table[count] = NULL;
        }
}


static hash_obj_t *
lookup_handle_object(handle_t   handle, int object_type)
{
        handle_t index_to_hash;
        hash_obj_t *first_hash_obj;
        hash_obj_t *next_hash_obj;

        index_to_hash = (handle % TABLE_SIZE);

        first_hash_obj = hash_table[index_to_hash];
        for (next_hash_obj = first_hash_obj; next_hash_obj != NULL;
            next_hash_obj = next_hash_obj->next) {
                if ((handle == next_hash_obj->obj_hdl) &&
                    (object_type == next_hash_obj->object_type)) {
                        return (next_hash_obj);
                }
        }
        return (NULL);
}


static void
add_hashobject_to_hashtable(hash_obj_t *hash_obj)
{
        handle_t index_to_hash;
        static  uint64_t handle_count = 0;

        hash_obj->obj_hdl = ++handle_count;     /* store the handle */

        /* where to add ? */
        index_to_hash = ((hash_obj->obj_hdl) % TABLE_SIZE);

        hash_obj->next = hash_table[index_to_hash];
        hash_table[index_to_hash] = hash_obj;   /* hash obj. added */

        if (hash_obj->next != NULL) {
                hash_obj->next->prev = hash_obj;
        }
}


static hash_obj_t *
create_container_hash_object(void)
{
        hash_obj_t *hash_obj;
        container_obj_t *cont_obj;

        cont_obj = malloc(sizeof (container_obj_t));
        if (cont_obj == NULL) {
                return (NULL);
        }

        hash_obj = malloc(sizeof (hash_obj_t));
        if (hash_obj == NULL) {
                free(cont_obj);
                return (NULL);
        }

        cont_obj->sec_obj_list = NULL;

        hash_obj->object_type = CONTAINER_TYPE;
        hash_obj->u.cont_obj = cont_obj;
        hash_obj->next = NULL;
        hash_obj->prev = NULL;

        return (hash_obj);
}


static hash_obj_t *
create_section_hash_object(void)
{
        hash_obj_t *hash_obj;
        section_obj_t *sec_obj;

        sec_obj = malloc(sizeof (section_obj_t));
        if (sec_obj == NULL) {
                return (NULL);
        }

        hash_obj = malloc(sizeof (hash_obj_t));
        if (hash_obj == NULL) {
                free(sec_obj);
                return (NULL);
        }

        sec_obj->next = NULL;
        sec_obj->seg_obj_list = NULL;

        hash_obj->u.sec_obj = sec_obj;
        hash_obj->object_type = SECTION_TYPE;
        hash_obj->next = NULL;
        hash_obj->prev = NULL;

        return (hash_obj);
}


static hash_obj_t *
create_segment_hash_object(void)
{
        hash_obj_t *hash_obj;
        segment_obj_t *seg_obj;

        seg_obj = malloc(sizeof (segment_obj_t));
        if (seg_obj == NULL) {
                return (NULL);
        }

        hash_obj = malloc(sizeof (hash_obj_t));
        if (hash_obj == NULL) {
                free(seg_obj);
                return (NULL);
        }

        seg_obj->next = NULL;
        seg_obj->pkt_obj_list = NULL;

        hash_obj->object_type = SEGMENT_TYPE;
        hash_obj->u.seg_obj = seg_obj;
        hash_obj->next = NULL;
        hash_obj->prev = NULL;

        return (hash_obj);
}


static hash_obj_t *
create_packet_hash_object(void)
{
        hash_obj_t *hash_obj;
        packet_obj_t *pkt_obj;

        pkt_obj = malloc(sizeof (packet_obj_t));
        if (pkt_obj == NULL) {
                return (NULL);
        }

        hash_obj = malloc(sizeof (hash_obj_t));
        if (hash_obj == NULL) {
                free(pkt_obj);
                return (NULL);
        }

        pkt_obj->next = NULL;

        hash_obj->object_type = PACKET_TYPE;
        hash_obj->u.pkt_obj = pkt_obj;
        hash_obj->next = NULL;
        hash_obj->prev = NULL;

        return (hash_obj);
}



static hash_obj_t *
get_container_hash_object(int   object_type, handle_t   handle)
{
        hash_obj_t      *hash_obj = NULL;

        switch (object_type) {
        case CONTAINER_TYPE:
                break;
        case SECTION_TYPE:
                hash_obj = lookup_handle_object(handle, CONTAINER_TYPE);
                if (hash_obj == NULL) {
                        return (NULL);
                }
                break;
        case SEGMENT_TYPE:
                hash_obj = lookup_handle_object(handle, SECTION_TYPE);
                if (hash_obj == NULL) {
                        return (NULL);
                }
                hash_obj = lookup_handle_object(hash_obj->u.sec_obj->cont_hdl,
                    CONTAINER_TYPE);
                break;
        case PACKET_TYPE:
                break;
        default:
                return (NULL);
        }

        return (hash_obj);
}


static void
add_to_pkt_object_list(hash_obj_t *parent_obj, hash_obj_t *child_obj)
{
        hash_obj_t *next_hash;

        /* add the packet object in the end of list */
        child_obj->u.pkt_obj->segment_hdl = parent_obj->obj_hdl;

        if (parent_obj->u.seg_obj->pkt_obj_list == NULL) {
                parent_obj->u.seg_obj->pkt_obj_list = child_obj;
                return;
        }

        for (next_hash = parent_obj->u.seg_obj->pkt_obj_list;
            next_hash->u.pkt_obj->next != NULL;
            next_hash = next_hash->u.pkt_obj->next) {
                ;
        }

        next_hash->u.pkt_obj->next = child_obj;
}


static void
free_pkt_object_list(hash_obj_t *hash_obj)
{
        hash_obj_t *next_obj;
        hash_obj_t *free_obj;

        next_obj = hash_obj->u.seg_obj->pkt_obj_list;
        while (next_obj != NULL) {
                free_obj = next_obj;
                next_obj = next_obj->u.pkt_obj->next;
                /* if prev is NULL it's the first object in the list */
                if (free_obj->prev == NULL) {
                        hash_table[(free_obj->obj_hdl % TABLE_SIZE)] =
                            free_obj->next;
                        if (free_obj->next != NULL) {
                                free_obj->next->prev = free_obj->prev;
                        }
                } else {
                        free_obj->prev->next = free_obj->next;
                        if (free_obj->next != NULL) {
                                free_obj->next->prev = free_obj->prev;
                        }
                }

                free(free_obj->u.pkt_obj->payload);
                free(free_obj->u.pkt_obj);
                free(free_obj);
        }

        hash_obj->u.seg_obj->pkt_obj_list = NULL;
}


static void
free_segment_hash(handle_t handle, hash_obj_t *sec_hash)
{
        hash_obj_t *seg_hash;
        hash_obj_t *next_hash;

        seg_hash = sec_hash->u.sec_obj->seg_obj_list;
        if (seg_hash == NULL) {
                return;
        }

        if (seg_hash->obj_hdl == handle) {
                sec_hash->u.sec_obj->seg_obj_list = seg_hash->u.seg_obj->next;
        } else {
                while (seg_hash->obj_hdl != handle) {
                        next_hash = seg_hash;
                        seg_hash = seg_hash->u.seg_obj->next;
                        if (seg_hash == NULL) {
                                return;
                        }
                }
                next_hash->u.seg_obj->next = seg_hash->u.seg_obj->next;
        }

        if (seg_hash->prev == NULL) {
                hash_table[(seg_hash->obj_hdl % TABLE_SIZE)] = seg_hash->next;
                if (seg_hash->next != NULL) {
                        seg_hash->next->prev = NULL;
                }
        } else {
                seg_hash->prev->next = seg_hash->next;
                if (seg_hash->next != NULL) {
                        seg_hash->next->prev = seg_hash->prev;
                }
        }

        free_pkt_object_list(seg_hash);
        free(seg_hash->u.seg_obj);
        free(seg_hash);
}



static void
add_to_sec_object_list(hash_obj_t *parent_obj, hash_obj_t *child_obj)
{
        hash_obj_t *next_hash;

        child_obj->u.sec_obj->cont_hdl = parent_obj->obj_hdl;
        if (parent_obj->u.cont_obj->sec_obj_list == NULL) {
                parent_obj->u.cont_obj->sec_obj_list = child_obj;
                return;
        }

        for (next_hash = parent_obj->u.cont_obj->sec_obj_list;
            next_hash->u.sec_obj->next != NULL;
            next_hash = next_hash->u.sec_obj->next) {
                ;
        }

        next_hash->u.sec_obj->next = child_obj;
}


static void
add_to_seg_object_list(hash_obj_t *parent_obj, hash_obj_t *child_obj)
{
        hash_obj_t *next_hash;

        child_obj->u.seg_obj->section_hdl = parent_obj->obj_hdl;
        if (parent_obj->u.sec_obj->seg_obj_list == NULL) {
                parent_obj->u.sec_obj->seg_obj_list = child_obj;
                return;
        }

        for (next_hash = parent_obj->u.sec_obj->seg_obj_list;
            next_hash->u.seg_obj->next != NULL;
            next_hash = next_hash->u.seg_obj->next) {
                ;
        }

        next_hash->u.seg_obj->next = child_obj;
}


static char *
tokenizer(char *buf, char *separator, char **nextBuf, char *matched)
{
        int i = 0;
        int j = 0;

        for (i = 0; buf[i] != '\0'; i++) {
                for (j = 0; j < strlen(separator); j++) {
                        if (buf[i] == separator[j]) {
                                buf[i] = '\0';
                                *nextBuf = &(buf[i+1]);
                                *matched = separator[j];
                                return (buf);
                        }
                }
        }

        *nextBuf = buf;
        *matched = '\0';
        return (NULL);
}


static void
copy_segment_layout(segment_t *seghdr, void *layout)
{
        segment_layout_t *seg_layout;

        seg_layout = (segment_layout_t *)layout;
        (void) memcpy(seghdr->name, &seg_layout->name, SEG_NAME_LEN);
        seghdr->descriptor = GET_SEGMENT_DESCRIPTOR;
        seghdr->offset = BE_16(seg_layout->offset);
        seghdr->length = BE_16(seg_layout->length);
}


static int
get_container_info(const char *def_file, const char *cont_desc_str,
    container_info_t *cont_info)
{
        char *item;
        char *token;
        char *field;
        char matched;
        char buf[1024];
        int foundIt = 0;
        FILE *file = fopen(def_file, "r");

        if (file == NULL)
                return (-1);

        cont_info->num_sections = 0;

        while (fgets(buf, sizeof (buf), file) != NULL) {
                /* ignore all comments */
                token = tokenizer(buf, "#", &field, &matched);
                /* find the names */
                token = tokenizer(buf, ":", &field, &matched);
                if (token != NULL) {
                        token = tokenizer(token, "|", &item, &matched);
                        while (token != NULL) {
                                if (strcmp(token, cont_desc_str) == 0) {
                                        foundIt = 1;
                                        goto found;
                                }
                                token = tokenizer(item, "|", &item, &matched);
                        }
                        /* check the last remaining item */
                        if ((item != NULL) &&
                            (strcmp(item, cont_desc_str) == 0)) {
                                foundIt = 1;
                                goto found;
                        }
                }
        }

found :
        if (foundIt == 1) {
                token = tokenizer(field, ":", &field, &matched);
                if (token == NULL) {
                        (void) fclose(file);
                        return (-1);
                }
                cont_info->header_ver = (headerrev_t)atoi(token);

                token = tokenizer(field, ":\n", &field, &matched);
                while (token != NULL) {
                        token = tokenizer(token, ",", &item, &matched);
                        if (token == NULL) {
                                (void) fclose(file);
                                return (-1);
                        }
                        if (atoi(token) == 1) {
                                cont_info->section_info[cont_info->
                                    num_sections].description.field.read_only
                                    = 1;
                        } else if (atoi(token) == 0) {
                                cont_info->section_info[cont_info->
                                    num_sections].description.field.read_only
                                    = 0;
                        } else {
                                (void) fclose(file);
                                return (-1);
                        }

                        token = tokenizer(item, ",", &item, &matched);
                        if (token == NULL) {
                                (void) fclose(file);
                                return (-1);
                        }

                        cont_info->section_info[cont_info->
                            num_sections].address = atoi(token);
                        if (item == NULL) {
                                (void) fclose(file);
                                return (-1);
                        }
                        cont_info->section_info[cont_info->num_sections].size =
                            atoi(item);
                        (cont_info->num_sections)++;

                        token = tokenizer(field, ":\n ", &field, &matched);
                }
        }
        (void) fclose(file);

        return (0);
}


/* ARGSUSED */
int
fru_get_segments(section_hdl_t section, segment_t *segment, int maxseg,
    door_cred_t *cred)
{
        int count;
        hash_obj_t *sec_object;
        hash_obj_t *seg_object;
        section_obj_t *sec_obj;

        sec_object = lookup_handle_object(section, SECTION_TYPE);
        if (sec_object == NULL) {
                return (-1);
        }

        sec_obj = sec_object->u.sec_obj;
        if (sec_obj == NULL) {
                return (-1);
        }

        if (sec_obj->num_of_segment > maxseg) {
                return (-1);
        }

        seg_object = sec_object->u.sec_obj->seg_obj_list;
        if (seg_object == NULL) {
                return (-1);
        }

        for (count = 0; count < sec_obj->num_of_segment; count++) {

                /* populate segment_t */
                segment->handle = seg_object->obj_hdl;
                (void) memcpy(segment->name,
                    seg_object->u.seg_obj->segment.name, SEG_NAME_LEN);
                segment->descriptor = seg_object->u.seg_obj->segment.descriptor;

                segment->offset = seg_object->u.seg_obj->segment.offset;
                segment->length = seg_object->u.seg_obj->segment.length;
                seg_object = seg_object->u.seg_obj->next;
                segment++;
        }
        return (0);
}


static int
raw_memcpy(void *buffer, raw_list_t *rawlist, int offset, int size)
{
        if (offset + size > rawlist->size) {
                size = rawlist->size - offset;
        }

        (void) memcpy(buffer, &rawlist->raw[offset], size);

        return (size);
}


static int
verify_header_crc8(headerrev_t head_ver, unsigned char *bytes, int length)
{
        int crc_offset = 0;
        unsigned char orig_crc8 = 0;
        unsigned char calc_crc8 = 0;

        switch (head_ver) {
                case SECTION_HDR_VER:
                        crc_offset = 4;
                        break;
                default:
                        errno = EINVAL;
                        return (0);
        }

        orig_crc8 = bytes[crc_offset];
        bytes[crc_offset] = 0x00; /* clear for calc */
        calc_crc8 = compute_crc8(bytes, length);
        bytes[crc_offset] = orig_crc8; /* restore */

        return (orig_crc8 == calc_crc8);
}


static int
get_section(raw_list_t *rawlist, hash_obj_t *sec_hash, section_t *section)
{
        int retval;
        int size;
        int count;
        uint16_t hdrver;
        hash_obj_t *seg_hash;
        unsigned char *buffer;
        section_obj_t *sec_obj;
        section_layout_t sec_hdr;
        segment_layout_t *seg_hdr;
        segment_layout_t *seg_buf;

        sec_obj = sec_hash->u.sec_obj;
        if (sec_obj == NULL) {
                return (-1);
        }

        /* populate section_t */
        section->handle = sec_hash->obj_hdl;
        section->offset = sec_obj->section.offset;
        section->length = sec_obj->section.length;
        section->protection = sec_obj->section.protection;
        section->version = sec_obj->section.version;

        /* read section header layout */
        retval = raw_memcpy(&sec_hdr, rawlist, sec_obj->section.offset,
            sizeof (sec_hdr));

        if (retval != sizeof (sec_hdr)) {
                return (-1);
        }


        hdrver = GET_SECTION_HDR_VERSION;

        if ((sec_hdr.headertag != SECTION_HDR_TAG) &&
            (hdrver != section->version)) {
                return (-1);
        }

        /* size = section layout + total sizeof segment header */
        size = sizeof (sec_hdr) + ((sec_hdr.segmentcount)
            * sizeof (segment_layout_t));

        buffer = alloca(size);
        if (buffer == NULL) {
                return (-1);
        }

        /* segment header buffer */
        seg_buf = alloca(size - sizeof (sec_hdr));
        if (seg_buf == NULL) {
                return (-1);
        }

        /* read segment header */
        retval = raw_memcpy(seg_buf, rawlist,
            sec_obj->section.offset + sizeof (sec_hdr),
            size - sizeof (sec_hdr));

        if (retval != (size - sizeof (sec_hdr))) {
                return (-1);
        }

        /* copy section header layout */
        (void) memcpy(buffer, &sec_hdr, sizeof (sec_hdr));

        /* copy segment header layout */
        (void) memcpy(buffer + sizeof (sec_hdr), seg_buf, size -
            sizeof (sec_hdr));

        /* verify crc8 */
        retval = verify_header_crc8(hdrver, buffer, size);
        if (retval != TRUE) {
                return (-1);
        }

        section->version = hdrver;
        sec_obj->section.version = hdrver;

        seg_hdr = (segment_layout_t *)seg_buf;

        /* bug fix for frutool */
        if (sec_hash->u.sec_obj->seg_obj_list != NULL) {
                return (0);
        } else {
                sec_obj->num_of_segment = 0;
        }
        for (count = 0; count < sec_hdr.segmentcount; count++, seg_hdr++) {

                seg_hash = create_segment_hash_object();
                if (seg_hash == NULL) {
                        return (-1);
                }
                add_hashobject_to_hashtable(seg_hash);
                copy_segment_layout(&seg_hash->u.seg_obj->segment, seg_hdr);
                add_to_seg_object_list(sec_hash, seg_hash);
                sec_obj->num_of_segment++;
        }
        return (0);
}

/* ARGSUSED */
int
fru_get_sections(container_hdl_t container, section_t *section, int maxsec,
    door_cred_t *cred)
{
        int count;
        int num_sec = 0;
        hash_obj_t *cont_object;
        hash_obj_t *sec_hash;

        cont_object = lookup_handle_object(container, CONTAINER_TYPE);
        if (cont_object == NULL) {
                return (-1);
        }

        if (cont_object->u.cont_obj->num_of_section > maxsec) {
                return (-1);
        }

        sec_hash = cont_object->u.cont_obj->sec_obj_list;
        if (sec_hash == NULL) {
                return (-1);
        }

        for (count = 0; count < cont_object->u.cont_obj->num_of_section;
            count++) {
                section->version = -1;
                /* populate section_t */
                if (get_section(g_raw, sec_hash, section) == 0) {
                        section++;
                        num_sec++;
                }
                sec_hash = sec_hash->u.sec_obj->next;
        }
        return (num_sec);
}


static uint32_t
get_checksum_crc(hash_obj_t *seg_hash, int data_size)
{
        int protection;
        int offset = 0;
        uint32_t crc;
        hash_obj_t *sec_hash;
        hash_obj_t *pkt_hash;
        unsigned char *buffer;

        sec_hash = lookup_handle_object(seg_hash->u.seg_obj->section_hdl,
            SECTION_TYPE);
        if (sec_hash == NULL) {
                return ((uint32_t)-1);
        }

        buffer = alloca(data_size);
        if (buffer == NULL) {
                return ((uint32_t)-1);
        }

        /* traverse the packet object list for all the tags and payload */
        for (pkt_hash = seg_hash->u.seg_obj->pkt_obj_list; pkt_hash != NULL;
            pkt_hash = pkt_hash->u.pkt_obj->next) {
                (void) memcpy(buffer + offset, &pkt_hash->u.pkt_obj->tag,
                    pkt_hash->u.pkt_obj->tag_size);
                offset += pkt_hash->u.pkt_obj->tag_size;
                (void) memcpy(buffer + offset, pkt_hash->u.pkt_obj->payload,
                    pkt_hash->u.pkt_obj->paylen);
                offset += pkt_hash->u.pkt_obj->paylen;
        }

        protection = sec_hash->u.sec_obj->section.protection;

        if (protection == READ_ONLY_SECTION) { /* read-only section */
                crc = compute_crc32(buffer, data_size);
        } else {                /* read/write section */
                crc = compute_checksum32(buffer, data_size);
        }
        return (crc);   /* computed crc */
}


static int
get_packet(raw_list_t *rawlist, void *buffer, int size, int offset)
{
        int retval;

        retval = raw_memcpy(buffer, rawlist, offset, size);

        if (retval != -1) {
                return (0);
        }
        return (-1);
}


static int
get_packets(hash_obj_t *seg_hash, raw_list_t *rawlist, int offset, int length)
{
        int tag_size;
        int paylen;
        int retval;
        int seg_limit = 0;
        int pktcnt = 0;
        char *data;
        uint32_t crc;
        uint32_t origcrc;
        fru_tag_t tag;
        hash_obj_t *pkt_hash_obj;
        hash_obj_t *sec_hash;
        fru_segdesc_t *segdesc;
        fru_tagtype_t tagtype;
        char *ignore_flag;

        retval = get_packet(rawlist, &tag, sizeof (fru_tag_t), offset);
        if (retval == -1) {
                return (-1);
        }

        /* section hash object */
        sec_hash = lookup_handle_object(seg_hash->u.seg_obj->section_hdl,
            SECTION_TYPE);

        if (sec_hash == NULL) {
                return (-1);
        }

        seg_hash->u.seg_obj->trailer_offset = offset;

        data = (char *)&tag;
        while (data[0] != SEG_TRAILER_TAG) {
                tagtype = get_tag_type(&tag); /* verify tag type */
                if (tagtype == -1) {
                        return (-1);
                }

                tag_size = get_tag_size(tagtype);
                if (tag_size == -1) {
                        return (-1);
                }

                seg_limit += tag_size;
                if (seg_limit > length) {
                        return (-1);
                }

                paylen = get_payload_length((void *)&tag);
                if (paylen == -1) {
                        return (-1);
                }

                seg_limit += paylen;
                if (seg_limit > length) {
                        return (-1);
                }
                if ((offset + tag_size + paylen) >
                    (sec_hash->u.sec_obj->section.offset +
                    sec_hash->u.sec_obj->section.length)) {
                        return (-1);
                }

                pkt_hash_obj = create_packet_hash_object();
                if (pkt_hash_obj == NULL) {
                        return (-1);
                }

                pkt_hash_obj->u.pkt_obj->payload = malloc(paylen);
                if (pkt_hash_obj->u.pkt_obj->payload == NULL) {
                        free(pkt_hash_obj);
                        return (-1);
                }

                offset += tag_size;

                retval = raw_memcpy(pkt_hash_obj->u.pkt_obj->payload, rawlist,
                    offset, paylen);

                if (retval != paylen) {
                        free(pkt_hash_obj->u.pkt_obj->payload);
                        free(pkt_hash_obj);
                        return (-1);
                }

                /* don't change this */
                pkt_hash_obj->u.pkt_obj->tag.raw_data = 0;
                (void) memcpy(&pkt_hash_obj->u.pkt_obj->tag, &tag, tag_size);
                pkt_hash_obj->u.pkt_obj->paylen = paylen;
                pkt_hash_obj->u.pkt_obj->tag_size = tag_size;
                pkt_hash_obj->u.pkt_obj->payload_offset = offset;

                offset += paylen;

                add_hashobject_to_hashtable(pkt_hash_obj);
                add_to_pkt_object_list(seg_hash, pkt_hash_obj);

                pktcnt++;

                retval = get_packet(rawlist, &tag, sizeof (fru_tag_t),
                    offset);
                if (retval == -1) {
                        return (retval);
                }

                data = (char *)&tag;
        }

        segdesc = (fru_segdesc_t *)&seg_hash->u.seg_obj->segment.descriptor;

        seg_hash->u.seg_obj->trailer_offset = offset;

        if (!segdesc->field.ignore_checksum)  {
                crc = get_checksum_crc(seg_hash, seg_limit);
                offset = seg_hash->u.seg_obj->segment.offset;

                retval = raw_memcpy(&origcrc, rawlist, offset + seg_limit + 1,
                    sizeof (origcrc));

                ignore_flag = getenv(IGNORE_CHECK);
                if (ignore_flag != NULL) {
                        return (pktcnt);
                }

                if (retval != sizeof (origcrc)) {
                        return (-1);
                }

                origcrc = BE_32(origcrc);
                if (origcrc != crc) {
                        seg_hash->u.seg_obj->trailer_offset = offset;
                        return (-1);
                }
        }

        return (pktcnt);
}

/* ARGSUSED */
int
fru_get_num_sections(container_hdl_t container, door_cred_t *cred)
{
        hash_obj_t *hash_object;

        hash_object = lookup_handle_object(container, CONTAINER_TYPE);
        if (hash_object == NULL) {
                return (-1);
        }

        return (hash_object->u.cont_obj->num_of_section);
}

/* ARGSUSED */
int
fru_get_num_segments(section_hdl_t section, door_cred_t *cred)
{
        hash_obj_t *sec_object;
        section_obj_t *sec_obj;

        sec_object = lookup_handle_object(section, SECTION_TYPE);
        if (sec_object == NULL) {
                return (-1);
        }

        sec_obj = sec_object->u.sec_obj;
        if (sec_obj == NULL) {
                return (-1);
        }

        return (sec_obj->num_of_segment);
}

/* ARGSUSED */
int
fru_get_num_packets(segment_hdl_t segment, door_cred_t *cred)
{
        int pktcnt;
        int length;
        uint16_t offset;
        hash_obj_t *cont_hash_obj;
        hash_obj_t *seg_hash;
        hash_obj_t *sec_hash;
        fru_segdesc_t *segdesc;
        segment_obj_t *segment_object;

        seg_hash = lookup_handle_object(segment, SEGMENT_TYPE);
        if (seg_hash == NULL) {
                return (-1);
        }

        segment_object = seg_hash->u.seg_obj;
        if (segment_object == NULL) {
                return (-1);
        }

        segdesc = (fru_segdesc_t *)&segment_object->segment.descriptor;
        if (segdesc->field.opaque) {
                return (0);
        }

        offset = segment_object->segment.offset;
        length = segment_object->segment.length;

        cont_hash_obj = get_container_hash_object(SEGMENT_TYPE,
            segment_object->section_hdl);

        if (cont_hash_obj == NULL) {
                return (-1);
        }

        if (seg_hash->u.seg_obj->pkt_obj_list != NULL) {
                return (segment_object->num_of_packets);
        }
        /* section hash object */
        sec_hash = lookup_handle_object(seg_hash->u.seg_obj->section_hdl,
            SECTION_TYPE);
        if (sec_hash == NULL) {
                return (-1);
        }

        /* valid segment header b'cos crc8 already validated */
        if (offset < sec_hash->u.sec_obj->section.offset) {
                return (-1);
        }

        segment_object->num_of_packets = 0;

        pktcnt = get_packets(seg_hash, g_raw, offset, length);
        if (pktcnt == -1) {
                free_pkt_object_list(seg_hash);
                seg_hash->u.seg_obj->pkt_obj_list = NULL;
        }

        segment_object->num_of_packets = pktcnt;

        return (segment_object->num_of_packets);
}

/* ARGSUSED */
int
fru_get_packets(segment_hdl_t segment, packet_t *packet, int maxpackets,
    door_cred_t *cred)
{
        int count;
        hash_obj_t *seg_hash_obj;
        hash_obj_t *pkt_hash_obj;

        /* segment hash object */
        seg_hash_obj = lookup_handle_object(segment, SEGMENT_TYPE);
        if (seg_hash_obj == NULL) {
                return (-1);
        }

        if (seg_hash_obj->u.seg_obj->num_of_packets != maxpackets) {
                return (-1);
        }

        pkt_hash_obj = seg_hash_obj->u.seg_obj->pkt_obj_list;
        if (pkt_hash_obj == NULL) {
                return (-1);
        }

        for (count = 0; count < maxpackets; count++, packet++) {
                packet->handle  = pkt_hash_obj->obj_hdl;
                packet->tag = 0;
                (void) memcpy(&packet->tag, &pkt_hash_obj->u.pkt_obj->tag,
                    pkt_hash_obj->u.pkt_obj->tag_size);
                pkt_hash_obj = pkt_hash_obj->u.pkt_obj->next;
        }

        return (0);
}

/* ARGSUSED */
ssize_t
fru_get_payload(packet_hdl_t packet, void *buffer, size_t nbytes,
    door_cred_t *cred)
{
        hash_obj_t *packet_hash_obj;

        /* packet hash object */
        packet_hash_obj = lookup_handle_object(packet, PACKET_TYPE);
        if (packet_hash_obj == NULL) {
                return (-1);
        }

        /* verify payload length */
        if (nbytes != packet_hash_obj->u.pkt_obj->paylen) {
                return (-1);
        }

        (void) memcpy(buffer, packet_hash_obj->u.pkt_obj->payload, nbytes);
        return (nbytes);
}


container_hdl_t
open_raw_data(raw_list_t *node)
{
        char *cont_conf_file = NULL;
        hash_obj_t *cont_hash_obj;
        hash_obj_t *sec_hash_obj;
        container_info_t cont_info;
        int retval;
        int count;

        cont_hash_obj = create_container_hash_object();
        if (cont_hash_obj == NULL) {
                return (0);
        }

        add_hashobject_to_hashtable(cont_hash_obj);

        (void) strncpy(cont_hash_obj->u.cont_obj->device_pathname, "unknown",
            sizeof (cont_hash_obj->u.cont_obj->device_pathname));

        cont_conf_file = getenv(FRU_CONT_CONF_ENV_VAR);
        if (cont_conf_file == NULL) {
                cont_conf_file = FRU_CONT_CONF_SPARC;
                retval = get_container_info(cont_conf_file, node->cont_type,
                    &cont_info);
                if (retval < 0) {
                        cont_conf_file = FRU_CONT_CONF_X86;
                        retval = get_container_info(cont_conf_file,
                            node->cont_type, &cont_info);
                }
        } else {
                retval = get_container_info(cont_conf_file, node->cont_type,
                    &cont_info);
        }

        if (retval < 0) {
                return (0);
        }

        cont_hash_obj->u.cont_obj->num_of_section = cont_info.num_sections;
        cont_hash_obj->u.cont_obj->sec_obj_list = NULL;

        for (count = 0; count < cont_info.num_sections; count++) {
                sec_hash_obj = create_section_hash_object();
                if (sec_hash_obj == NULL) {
                        return (0);
                }

                add_hashobject_to_hashtable(sec_hash_obj);

                sec_hash_obj->u.sec_obj->section.offset =
                    cont_info.section_info[count].address;

                sec_hash_obj->u.sec_obj->section.protection =
                    cont_info.section_info[count].description.field.read_only;

                sec_hash_obj->u.sec_obj->section.length =
                    cont_info.section_info[count].size;
                sec_hash_obj->u.sec_obj->section.version =
                    cont_info.header_ver;

                add_to_sec_object_list(cont_hash_obj, sec_hash_obj);
        }

        return (cont_hash_obj->obj_hdl);
}


int
fru_close_container(container_hdl_t container)
{
        hash_obj_t *hash_obj;
        hash_obj_t *prev_hash;
        hash_obj_t *sec_hash_obj;
        handle_t obj_hdl;

        /* lookup for container hash object */
        hash_obj = lookup_handle_object(container, CONTAINER_TYPE);
        if (hash_obj == NULL) {
                return (0);
        }

        /* points to section object list */
        sec_hash_obj = hash_obj->u.cont_obj->sec_obj_list;

        /* traverse section object list */
        while (sec_hash_obj != NULL) {

                /* traverse segment hash object in the section */
                while (sec_hash_obj->u.sec_obj->seg_obj_list != NULL) {
                        /* object handle of the segment hash object */
                        obj_hdl =
                            sec_hash_obj->u.sec_obj->seg_obj_list->obj_hdl;
                        free_segment_hash(obj_hdl, sec_hash_obj);
                }

                /* going to free section hash object, relink the hash object */
                if (sec_hash_obj->prev == NULL) {
                        hash_table[(sec_hash_obj->obj_hdl % TABLE_SIZE)] =
                            sec_hash_obj->next;
                        if (sec_hash_obj->next != NULL) {
                                sec_hash_obj->next->prev = NULL;
                        }
                } else {
                        sec_hash_obj->prev->next = sec_hash_obj->next;
                        if (sec_hash_obj->next != NULL) {
                                sec_hash_obj->next->prev = sec_hash_obj->prev;
                        }
                }

                prev_hash = sec_hash_obj;
                sec_hash_obj = sec_hash_obj->u.sec_obj->next;

                free(prev_hash->u.sec_obj); /* free section hash object */
                free(prev_hash); /* free section hash */
        }

        /* free container hash object */
        if (hash_obj->prev == NULL) {
                hash_table[(hash_obj->obj_hdl % TABLE_SIZE)] =
                    hash_obj->next;
                if (hash_obj->next != NULL) {
                        hash_obj->next->prev = NULL;
                }
        } else {
                hash_obj->prev->next = hash_obj->next;
                if (hash_obj->next != NULL) {
                        hash_obj->next->prev = hash_obj->prev;
                }
        }

        free(hash_obj->u.cont_obj);
        free(hash_obj);

        return (0);
}