/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License, Version 1.0 only
 * (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) 2001 by Sun Microsystems, Inc.
 * All rights reserved.
 */

#include <stdio.h>
#include <sys/types.h>

#include <at.h>
#include <snoop.h>

char *print_macaddr(uint8_t *, int);

static char *zip_flags(char);
static char *zip_flags_long(char);

void
interpret_ddp_zip(int flags, struct zip_hdr *zip, int len)
{
        int cnt;
        uint16_t net;
        uint16_t range;
        uint8_t *p;
        char zone[33];
        char defzone[60] = "";
        char mcast[50] = "";
        uint8_t gniflags;
        uint8_t *tail = (uint8_t *)zip + len;

        if (flags & F_SUM) {
                if (len < sizeof (struct zip_hdr))
                        goto out;

                switch (zip->zip_func) {
                case ZIP_QUERY:
                        cnt = zip->zip_netcnt;
                        (void) snprintf(get_sum_line(), MAXLINE,
                            "ZIP Query CNT = %d", cnt);
                        break;
                case ZIP_REPLY:
                case ZIP_EXT_REPLY:
                        cnt = zip->zip_netcnt;
                        (void) snprintf(get_sum_line(), MAXLINE,
                            "ZIP Reply CNT = %d", cnt);
                        break;
                case ZIP_GET_NET_INFO:
                        p = &zip->zip_func;

                        if ((p+6 > tail) || (p+7+p[6] > tail))
                                goto out;

                        (void) snprintf(get_sum_line(), MAXLINE,
                            "ZIP GNI Zone = \"%.*s\"", p[6], &p[7]);
                        break;
                case ZIP_GET_NET_INFO_REPLY:
                        p = &zip->zip_func;

                        gniflags = p[1];
                        (void) snprintf(get_sum_line(), MAXLINE,
                            "ZIP GNI Rep Flags 0x%x (%s)",
                            gniflags, zip_flags(gniflags));
                        break;
                default:
                        (void) snprintf(get_sum_line(), MAXLINE,
                            "ZIP CMD = %d", zip->zip_func);
                        break;
                }
        }

        if (flags & F_DTAIL) {
                show_header("ZIP:  ", "ZIP Header", len);
                show_space();

                (void) snprintf(get_line(0, 0), get_line_remain(),
                    "Length = %d", len);

                if (len < sizeof (struct zip_hdr))
                        goto out;

                switch (zip->zip_func) {
                case ZIP_QUERY:
                        (void) snprintf(get_line(0, 0), get_line_remain(),
                            "Query, Network count = %d", zip->zip_netcnt);
                        cnt = zip->zip_netcnt;
                        p = (uint8_t *)(zip + 1);
                        while (cnt--) {
                                if (p+2 > tail)
                                        goto out;
                                net = get_short(p);
                                p += 2;
                                (void) snprintf(get_line(0, 0),
                                    get_line_remain(), "Net = %d", net);
                        }
                        break;
                case ZIP_REPLY:
                case ZIP_EXT_REPLY:
                        cnt = zip->zip_netcnt;
                        (void) snprintf(get_line(0, 0), get_line_remain(),
                            "Reply, Network count = %d", cnt);

                        p = (uint8_t *)(zip + 1);
                        while (cnt--) {
                                if (p+2 > tail)
                                        goto out;
                                net = get_short(p);
                                p += 2;
                                if (p+1 > tail || (&p[1] + p[0]) > tail)
                                        goto out;
                                (void) snprintf(get_line(0, 0),
                                    get_line_remain(),
                                    "Network = %d, Zone = \"%.*s\"",
                                    net, p[0], &p[1]);
                                p += p[0] + 1;
                        }
                        break;
                case ZIP_GET_NET_INFO:
                        p = &zip->zip_func;
                        if (p+1 > tail || (&p[1] + p[0]) > tail)
                                goto out;
                        (void) snprintf(get_line(0, 0), get_line_remain(),
                            "GetNetInfo Zone = \"%.*s\"", p[0], &p[1]);
                        break;
                case ZIP_GET_NET_INFO_REPLY:
                        p = &zip->zip_func;
                        if (p+5 > tail)
                                goto out;
                        gniflags = p[1];
                        net = get_short(&p[2]);
                        range = get_short(&p[4]);

                        if (p+7 > tail || (&p[7] + p[6]) > tail)
                                goto out;
                        (void) snprintf(zone, sizeof (zone),
                            "%.*s", p[6], &p[7]);
                        p = &p[7] + p[6];

                        if ((gniflags & ZIP_FLG_USEBRC) == 0) {
                                if (p+1 > tail || (&p[1] + p[0]) > tail)
                                        goto out;
                                (void) snprintf(mcast, sizeof (mcast),
                                    "Multicast address = %s",
                                    print_macaddr(&p[1], p[0]));
                        }

                        if (gniflags & ZIP_FLG_ZINV) {
                                p = &p[1] + p[0];
                                if (p+1 > tail || (&p[1] + p[0]) > tail)
                                        goto out;
                                (void) snprintf(defzone, sizeof (defzone),
                                    "Default Zone = \"%.*s\"",
                                    p[0], &p[1]);
                        }
                        (void) snprintf(get_line(0, 0), get_line_remain(),
                            "GetNetInfo Reply, Flags 0x%x (%s)",
                            gniflags, zip_flags_long(gniflags));

                        (void) snprintf(get_line(0, 0), get_line_remain(),
                            "Network number = %d-%d", net, range);

                        (void) snprintf(get_line(0, 0), get_line_remain(),
                            "Zone = \"%s\"", zone);

                        if (mcast[0])
                                (void) snprintf(get_line(0, 0),
                                    get_line_remain(),
                                    "%s", mcast);

                        if (defzone[0])
                                (void) snprintf(get_line(0, 0),
                                    get_line_remain(),
                                    "%s", defzone);

                        break;
                case ZIP_NOTIFY:
                        p = &zip->zip_func;
                        if (p+5 > tail)
                                goto out;

                        gniflags = p[1];
                        net = get_short(&p[2]);
                        range = get_short(&p[4]);

                        if (p+7 > tail || (&p[7] + p[6]) > tail)
                                goto out;
                        (void) snprintf(zone, sizeof (zone),
                            "%.*s", p[6], &p[7]);
                        p = &p[7] + p[6];

                        if ((gniflags & ZIP_FLG_USEBRC) == 0) {
                                if (p+1 > tail || (&p[1] + p[0]) > tail)
                                        goto out;
                                (void) snprintf(mcast, sizeof (mcast),
                                    "New Multicast address = %s",
                                    print_macaddr(&p[1], p[0]));
                        }

                        if (p+1 > tail || (&p[1] + p[0]) > tail)
                                goto out;

                        p = &p[1] + p[0];

                        if (p+1 > tail || (&p[1] + p[0]) > tail)
                                goto out;

                        (void) snprintf(defzone, sizeof (defzone),
                            "New Default Zone = \"%.*s\"",
                            p[0], &p[1]);

                        (void) snprintf(get_line(0, 0), get_line_remain(),
                            "Notify, Flags 0x%x (%s)",
                            gniflags, zip_flags_long(gniflags));

                        (void) snprintf(get_line(0, 0), get_line_remain(),
                            "Old Zone = \"%s\"", zone);

                        if (mcast[0])
                                (void) snprintf(get_line(0, 0),
                                    get_line_remain(), "%s", mcast);

                        if (defzone[0])
                                (void) snprintf(get_line(0, 0),
                                    get_line_remain(), "%s", defzone);

                        break;
                default:
                        (void) snprintf(get_line(0, 0), get_line_remain(),
                            "Op = %d", zip->zip_func);
                        break;
                }
        }
        return;
out:
        if (flags & F_SUM)
                (void) snprintf(get_sum_line(), MAXLINE,
                    "ZIP (short packet)");
        if (flags & F_DTAIL)
                (void) snprintf(get_line(0, 0), get_line_remain(),
                    "ZIP (short packet)");
}

static char *
zip_flags(char flags)
{
        static char buf[50];
        char *p = buf;
        char *tail = &buf[sizeof (buf)];

        buf[0] = '\0';

        if (flags & ZIP_FLG_ZINV)
                p += snprintf(p, tail-p, "IZ");

        if (flags & ZIP_FLG_USEBRC)
                p += snprintf(p, tail-p, p == buf ? "UB" : " UB");

        if (flags & ZIP_FLG_ONEZ)
                (void) snprintf(p, tail-p, p == buf ? "OOZ" : " OOZ");

        return (buf);
}

static char *
zip_flags_long(char flags)
{
        static char buf[50];
        char *p = buf;
        char *tail = &buf[sizeof (buf)];

        buf[0] = '\0';

        if (flags & ZIP_FLG_ZINV)
                p += snprintf(p, tail-p, "ZoneInvalid");

        if (flags & ZIP_FLG_USEBRC)
                p += snprintf(p, tail-p,
                    p == buf ? "UseBroadcast" : " UseBroadcast");

        if (flags & ZIP_FLG_ONEZ)
                (void) snprintf(p, tail-p,
                    p == buf ? "OnlyOneZone" : " OnlyOneZone");

        return (buf);
}

void
interpret_atp_zip(int flags, struct atp_hdr *atp, int len)
{
        int cnt;
        uint8_t *data;
        uint8_t *tail = (uint8_t *)(atp+1) + len;

        if (flags & F_SUM) {
                if (len < 0) {
                        (void) snprintf(get_sum_line(), MAXLINE,
                            "ZIP (short packet)");
                        return;
                }

                switch (atp_fun(atp->atp_ctrl)) {
                case ATP_TREQ:
                        switch (atp->atp_user[0]) {
                        case ZIP_ATP_GETMYZONE:
                                (void) snprintf(get_sum_line(), MAXLINE,
                                    "ZIP GetMyZone");
                                break;

                        case ZIP_ATP_GETZONELIST:
                                (void) snprintf(get_sum_line(), MAXLINE,
                                    "ZIP GetZoneList");
                                break;

                        case ZIP_ATP_GETLOCALZONES:
                                (void) snprintf(get_sum_line(), MAXLINE,
                                    "ZIP GetLocalZones");
                                break;
                        }
                        break;
                case ATP_TRESP:
                        cnt = get_short(&atp->atp_user[2]);
                        (void) snprintf(get_sum_line(), MAXLINE,
                            "ZIP ZoneReply, Cnt = %d", cnt);

                        break;
                }
        }

        if (flags & F_DTAIL) {
                show_header("ZIP:  ", "ZIP Header", len);
                show_space();

                if (len < 0) {
                        (void) snprintf(get_line(0, 0), get_line_remain(),
                            "ZIP (short packet)");
                        return;
                }

                switch (atp_fun(atp->atp_ctrl)) {
                case ATP_TREQ:
                        switch (atp->atp_user[0]) {
                        case ZIP_ATP_GETMYZONE:
                                (void) snprintf(get_line(0, 0),
                                    get_line_remain(),
                                    "GetMyZone, Start Index = %d",
                                    get_short(&atp->atp_user[2]));
                                break;
                        case ZIP_ATP_GETZONELIST:
                                (void) snprintf(get_line(0, 0),
                                    get_line_remain(),
                                    "GetZoneList, Start Index = %d",
                                    get_short(&atp->atp_user[2]));
                                break;
                        case ZIP_ATP_GETLOCALZONES:
                                (void) snprintf(get_line(0, 0),
                                    get_line_remain(),
                                    "GetLocalZones, Start Index = %d",
                                    get_short(&atp->atp_user[2]));
                                break;
                        }
                        break;
                case ATP_TRESP:
                        cnt = get_short(&atp->atp_user[2]);
                        (void) snprintf(get_line(0, 0), get_line_remain(),
                            "ZoneReply, Number of Zones = %d, Length = %d",
                            cnt, len);

                        data = (uint8_t *)atp + DDPHDR_SIZE + ATPHDR_SIZE;

                        while (cnt--) {
                                if (data > tail ||
                                    (&data[1] + data[0]) > tail) {
                                        (void) snprintf(get_line(0, 0),
                                            get_line_remain(),
                                            "ZoneReply (short packet)");
                                        return;
                                }
                                (void) snprintf(get_line(0, 0),
                                    get_line_remain(),
                                    "Zone = \"%.*s\"", data[0], &data[1]);
                                data += data[0] + 1;
                        }
                        break;
                }
        }
}