/*-
 * SPDX-License-Identifier: BSD-3-Clause
 *
 * Copyright (c) 2008 Yahoo!, Inc.
 * All rights reserved.
 * Written by: John Baldwin <jhb@FreeBSD.org>
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the author nor the names of any co-contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#include <sys/param.h>
#include <sys/errno.h>
#include <ctype.h>
#include <err.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include "mptutil.h"

static CONFIG_PAGE_LOG_0 *
mpt_get_events(int fd, U16 *IOCStatus)
{

        return (mpt_read_extended_config_page(fd, MPI_CONFIG_EXTPAGETYPE_LOG,
            0, 0, 0, IOCStatus));
}

/*
 *          1         2         3         4         5         6         7
 * 1234567890123456789012345678901234567890123456789012345678901234567890
 * < ID> < time > <ty> <X XX XX XX XX XX XX XX XX XX XX XX XX XX |..............|
 *  ID     Time   Type Log Data
 */
static void
mpt_print_event(MPI_LOG_0_ENTRY *entry, int verbose)
{
        int i;

        printf("%5d %7ds %4x ", entry->LogSequence, entry->TimeStamp,
            entry->LogEntryQualifier);
        for (i = 0; i < 14; i++)
                printf("%02x ", entry->LogData[i]);
        printf("|");
        for (i = 0; i < 14; i++)
                printf("%c", isprint(entry->LogData[i]) ? entry->LogData[i] :
                    '.');
        printf("|\n");
        printf("                    ");
        for (i = 0; i < 14; i++)
                printf("%02x ", entry->LogData[i + 14]);
        printf("|");
        for (i = 0; i < 14; i++)
                printf("%c", isprint(entry->LogData[i + 14]) ?
                    entry->LogData[i + 14] : '.');
        printf("|\n");
}

static int
event_compare(const void *first, const void *second)
{
        MPI_LOG_0_ENTRY * const *one;
        MPI_LOG_0_ENTRY * const *two;

        one = first;
        two = second;
        return ((*one)->LogSequence - ((*two)->LogSequence));
}

static int
show_events(int ac, char **av)
{
        CONFIG_PAGE_LOG_0 *log;
        MPI_LOG_0_ENTRY **entries;
        int ch, error, fd, i, num_events, verbose;

        fd = mpt_open(mpt_unit);
        if (fd < 0) {
                error = errno;
                warn("mpt_open");
                return (error);
        }

        log = mpt_get_events(fd, NULL);
        if (log == NULL) {
                error = errno;
                warn("Failed to get event log info");
                return (error);
        }

        /* Default settings. */
        verbose = 0;

        /* Parse any options. */
        optind = 1;
        while ((ch = getopt(ac, av, "v")) != -1) {
                switch (ch) {
                case 'v':
                        verbose = 1;
                        break;
                case '?':
                default:
                        free(log);
                        close(fd);
                        return (EINVAL);
                }
        }
        ac -= optind;
        av += optind;

        /* Build a list of valid entries and sort them by sequence. */
        entries = malloc(sizeof(MPI_LOG_0_ENTRY *) * log->NumLogEntries);
        if (entries == NULL) {
                free(log);
                close(fd);
                return (ENOMEM);
        }
        num_events = 0;
        for (i = 0; i < log->NumLogEntries; i++) {
                if (log->LogEntry[i].LogEntryQualifier ==
                    MPI_LOG_0_ENTRY_QUAL_ENTRY_UNUSED)
                        continue;
                entries[num_events] = &log->LogEntry[i];
                num_events++;
        }

        qsort(entries, num_events, sizeof(MPI_LOG_0_ENTRY *), event_compare);

        if (num_events == 0)
                printf("Event log is empty\n");
        else {
                printf(" ID     Time   Type Log Data\n");
                for (i = 0; i < num_events; i++)
                        mpt_print_event(entries[i], verbose);
        }
        
        free(entries);
        free(log);
        close(fd);

        return (0);
}
MPT_COMMAND(show, events, show_events);