/*      $KAME: pfkey_dump.c,v 1.45 2003/09/08 10:14:56 itojun Exp $     */

/*-
 * SPDX-License-Identifier: BSD-3-Clause
 *
 * Copyright (C) 1995, 1996, 1997, 1998, and 1999 WIDE Project.
 * All rights reserved.
 *
 * 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 project nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE PROJECT 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 PROJECT 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/types.h>
#include <sys/param.h>
#include <sys/socket.h>
#include <net/if.h>
#include <net/pfkeyv2.h>
#include <netipsec/ipsec.h>
#include <netipsec/key_var.h>
#include <netipsec/key_debug.h>

#include <netinet/in.h>
#include <arpa/inet.h>

#include <stdbool.h>
#include <stdlib.h>
#include <unistd.h>
#include <stdio.h>
#include <string.h>
#include <time.h>
#include <netdb.h>

#include "ipsec_strerror.h"
#include "libpfkey.h"

/* cope with old kame headers - ugly */
#ifndef SADB_X_AALG_NULL
#define SADB_X_AALG_NULL        SADB_AALG_NULL
#endif

#ifndef SADB_X_EALG_RC5CBC
#ifdef SADB_EALG_RC5CBC
#define SADB_X_EALG_RC5CBC      SADB_EALG_RC5CBC
#endif
#endif

#define GETMSGSTR(str, num) \
do { \
        if (sizeof((str)[0]) == 0 \
         || num >= sizeof(str)/sizeof((str)[0])) \
                printf("%u ", (num)); \
        else if (strlen((str)[(num)]) == 0) \
                printf("%u ", (num)); \
        else \
                printf("%s ", (str)[(num)]); \
} while (0)

#define GETMSGV2S(v2s, num) \
do { \
        struct val2str *p;  \
        for (p = (v2s); p && p->str; p++) { \
                if (p->val == (num)) \
                        break; \
        } \
        if (p && p->str) \
                printf("%s ", p->str); \
        else \
                printf("%u ", (num)); \
} while (0)

static char *str_ipaddr(struct sockaddr *);
static char *str_prefport(u_int, u_int, u_int, u_int);
static void str_upperspec(u_int, u_int, u_int);
static char *str_time(time_t);
static void str_lifetime_byte(struct sadb_lifetime *, char *);

struct val2str {
        int val;
        const char *str;
};

/*
 * Must to be re-written about following strings.
 */
static char *str_satype[] = {
        "unspec",
        "unknown",
        "ah",
        "esp",
        "unknown",
        "rsvp",
        "ospfv2",
        "ripv2",
        "mip",
        "ipcomp",
        "policy",
        "tcp"
};

static char *str_mode[] = {
        "any",
        "transport",
        "tunnel",
};

static char *str_state[] = {
        "larval",
        "mature",
        "dying",
        "dead",
};

static struct val2str str_alg_auth[] = {
        { SADB_AALG_NONE, "none", },
        { SADB_AALG_SHA1HMAC, "hmac-sha1", },
        { SADB_X_AALG_NULL, "null", },
        { SADB_X_AALG_TCP_MD5, "tcp-md5", },
#ifdef SADB_X_AALG_SHA2_256
        { SADB_X_AALG_SHA2_256, "hmac-sha2-256", },
#endif
#ifdef SADB_X_AALG_SHA2_384
        { SADB_X_AALG_SHA2_384, "hmac-sha2-384", },
#endif
#ifdef SADB_X_AALG_SHA2_512
        { SADB_X_AALG_SHA2_512, "hmac-sha2-512", },
#endif
#ifdef SADB_X_AALG_AES_XCBC_MAC
        { SADB_X_AALG_AES_XCBC_MAC, "aes-xcbc-mac", },
#endif
#ifdef SADB_X_AALG_CHACHA20POLY1305
        { SADB_X_AALG_CHACHA20POLY1305, "chacha20-poly1305", },
#endif
        { -1, NULL, },
};

static struct val2str str_alg_enc[] = {
        { SADB_EALG_NONE, "none", },
        { SADB_EALG_NULL, "null", },
#ifdef SADB_X_EALG_RC5CBC
        { SADB_X_EALG_RC5CBC, "rc5-cbc", },
#endif
#ifdef SADB_X_EALG_AESCBC
        { SADB_X_EALG_AESCBC, "aes-cbc", },
#endif
#ifdef SADB_X_EALG_TWOFISHCBC
        { SADB_X_EALG_TWOFISHCBC, "twofish-cbc", },
#endif
#ifdef SADB_X_EALG_AESCTR
        { SADB_X_EALG_AESCTR, "aes-ctr", },
#endif
#ifdef SADB_X_EALG_AESGCM16
        { SADB_X_EALG_AESGCM16, "aes-gcm-16", },
#endif
#ifdef SADB_X_EALG_CHACHA20POLY1305
        { SADB_X_EALG_CHACHA20POLY1305, "chacha20-poly1305", },
#endif
        { -1, NULL, },
};

static struct val2str str_alg_comp[] = {
        { SADB_X_CALG_NONE, "none", },
        { SADB_X_CALG_OUI, "oui", },
        { SADB_X_CALG_DEFLATE, "deflate", },
        { SADB_X_CALG_LZS, "lzs", },
        { -1, NULL, },
};

static struct val2str str_sp_scope[] = {
        { IPSEC_POLICYSCOPE_GLOBAL, "global" },
        { IPSEC_POLICYSCOPE_IFNET, "ifnet" },
        { IPSEC_POLICYSCOPE_PCB, "pcb"},
        { -1, NULL },
};

/*
 * dump SADB_MSG formatted.  For debugging, you should use kdebug_sadb().
 */
void
pfkey_sadump(struct sadb_msg *m)
{
        caddr_t mhp[SADB_EXT_MAX + 1];
        struct sadb_sa *m_sa;
        struct sadb_x_sa2 *m_sa2;
        struct sadb_lifetime *m_lftc, *m_lfth, *m_lfts, *m_lft_sw, *m_lft_hw;
        struct sadb_address *m_saddr, *m_daddr, *m_paddr;
        struct sadb_key *m_auth, *m_enc;
        struct sadb_ident *m_sid, *m_did;
        struct sadb_sens *m_sens;
        struct sadb_x_sa_replay *m_sa_replay;
        struct sadb_x_nat_t_type *natt_type;
        struct sadb_x_nat_t_port *natt_sport, *natt_dport;
        struct sadb_address *natt_oai, *natt_oar;
        struct sadb_x_if_hw_offl *if_hw_offl;
        caddr_t p, ep;
        struct sadb_ext *ext;
        bool first;

        /* check pfkey message. */
        if (pfkey_align(m, mhp)) {
                printf("%s\n", ipsec_strerror());
                return;
        }
        if (pfkey_check(mhp)) {
                printf("%s\n", ipsec_strerror());
                return;
        }

        m_sa = (struct sadb_sa *)mhp[SADB_EXT_SA];
        m_sa2 = (struct sadb_x_sa2 *)mhp[SADB_X_EXT_SA2];
        m_lftc = (struct sadb_lifetime *)mhp[SADB_EXT_LIFETIME_CURRENT];
        m_lfth = (struct sadb_lifetime *)mhp[SADB_EXT_LIFETIME_HARD];
        m_lfts = (struct sadb_lifetime *)mhp[SADB_EXT_LIFETIME_SOFT];
        m_saddr = (struct sadb_address *)mhp[SADB_EXT_ADDRESS_SRC];
        m_daddr = (struct sadb_address *)mhp[SADB_EXT_ADDRESS_DST];
        m_paddr = (struct sadb_address *)mhp[SADB_EXT_ADDRESS_PROXY];
        m_auth = (struct sadb_key *)mhp[SADB_EXT_KEY_AUTH];
        m_enc = (struct sadb_key *)mhp[SADB_EXT_KEY_ENCRYPT];
        m_sid = (struct sadb_ident *)mhp[SADB_EXT_IDENTITY_SRC];
        m_did = (struct sadb_ident *)mhp[SADB_EXT_IDENTITY_DST];
        m_sens = (struct sadb_sens *)mhp[SADB_EXT_SENSITIVITY];
        m_sa_replay = (struct sadb_x_sa_replay *)mhp[SADB_X_EXT_SA_REPLAY];
        natt_type = (struct sadb_x_nat_t_type *)mhp[SADB_X_EXT_NAT_T_TYPE];
        natt_sport = (struct sadb_x_nat_t_port *)mhp[SADB_X_EXT_NAT_T_SPORT];
        natt_dport = (struct sadb_x_nat_t_port *)mhp[SADB_X_EXT_NAT_T_DPORT];
        natt_oai = (struct sadb_address *)mhp[SADB_X_EXT_NAT_T_OAI];
        natt_oar = (struct sadb_address *)mhp[SADB_X_EXT_NAT_T_OAR];
        m_lft_sw = (struct sadb_lifetime *)mhp[SADB_X_EXT_LFT_CUR_SW_OFFL];
        m_lft_hw = (struct sadb_lifetime *)mhp[SADB_X_EXT_LFT_CUR_HW_OFFL];
        if_hw_offl = (struct sadb_x_if_hw_offl *)mhp[SADB_X_EXT_IF_HW_OFFL];

        /* source address */
        if (m_saddr == NULL) {
                printf("no ADDRESS_SRC extension.\n");
                return;
        }
        printf("%s", str_ipaddr((struct sockaddr *)(m_saddr + 1)));
        if (natt_type != NULL && natt_sport != NULL)
                printf("[%u]", ntohs(natt_sport->sadb_x_nat_t_port_port));

        /* destination address */
        if (m_daddr == NULL) {
                printf("\nno ADDRESS_DST extension.\n");
                return;
        }
        printf(" %s", str_ipaddr((struct sockaddr *)(m_daddr + 1)));
        if (natt_type != NULL && natt_dport != NULL)
                printf("[%u]", ntohs(natt_dport->sadb_x_nat_t_port_port));

        /* SA type */
        if (m_sa == NULL) {
                printf("\nno SA extension.\n");
                return;
        }
        if (m_sa2 == NULL) {
                printf("\nno SA2 extension.\n");
                return;
        }
        printf("\n\t");

        if (m->sadb_msg_satype == SADB_SATYPE_ESP && natt_type != NULL)
                printf("esp-udp ");
        else
                GETMSGSTR(str_satype, m->sadb_msg_satype);

        printf("mode=");
        GETMSGSTR(str_mode, m_sa2->sadb_x_sa2_mode);

        printf("spi=%u(0x%08x) reqid=%u(0x%08x)\n",
                (u_int32_t)ntohl(m_sa->sadb_sa_spi),
                (u_int32_t)ntohl(m_sa->sadb_sa_spi),
                (u_int32_t)m_sa2->sadb_x_sa2_reqid,
                (u_int32_t)m_sa2->sadb_x_sa2_reqid);

        /* other NAT-T information */
        if (natt_type != NULL && (natt_oai != NULL || natt_oar != NULL)) {
                printf("\tNAT:");
                if (natt_oai != NULL)
                        printf(" OAI=%s",
                            str_ipaddr((struct sockaddr *)(natt_oai + 1)));
                if (natt_oar != NULL)
                        printf(" OAR=%s",
                            str_ipaddr((struct sockaddr *)(natt_oar + 1)));
                printf("\n");
        }

        /* encryption key */
        if (m->sadb_msg_satype == SADB_X_SATYPE_IPCOMP) {
                printf("\tC: ");
                GETMSGV2S(str_alg_comp, m_sa->sadb_sa_encrypt);
        } else if (m->sadb_msg_satype == SADB_SATYPE_ESP) {
                if (m_enc != NULL) {
                        printf("\tE: ");
                        GETMSGV2S(str_alg_enc, m_sa->sadb_sa_encrypt);
                        ipsec_hexdump((caddr_t)m_enc + sizeof(*m_enc),
                                      m_enc->sadb_key_bits / 8);
                        printf("\n");
                }
        }

        /* authentication key */
        if (m_auth != NULL) {
                printf("\tA: ");
                GETMSGV2S(str_alg_auth, m_sa->sadb_sa_auth);
                ipsec_hexdump((caddr_t)m_auth + sizeof(*m_auth),
                              m_auth->sadb_key_bits / 8);
                printf("\n");
        }

        /* replay windoe size & flags */
        printf("\tseq=0x%08x replay=%u flags=0x%08x ",
                m_sa2->sadb_x_sa2_sequence,
                m_sa_replay ? (m_sa_replay->sadb_x_sa_replay_replay >> 3) :
                        m_sa->sadb_sa_replay,
                m_sa->sadb_sa_flags);

        /* state */
        printf("state=");
        GETMSGSTR(str_state, m_sa->sadb_sa_state);
        printf("\n");

        /* hw offload interface */
        if (if_hw_offl != NULL) {
                p = (caddr_t)m;
                ep = p + PFKEY_UNUNIT64(m->sadb_msg_len);
                p += sizeof(struct sadb_msg);
                printf("\thw offl if: ");

                for (first = true; p < ep; p += PFKEY_EXTLEN(ext)) {
                        ext = (struct sadb_ext *)p;
                        if (ext->sadb_ext_type != SADB_X_EXT_IF_HW_OFFL)
                                continue;
                        if_hw_offl = (struct sadb_x_if_hw_offl *)ext;
                        if (first)
                                first = false;
                        else
                                printf(",");
                        printf("%s", if_hw_offl->sadb_x_if_hw_offl_if);
                }
                printf("\n");
        }

        /* lifetime */
        if (m_lftc != NULL) {
                time_t tmp_time = time(0);

                printf("\tcreated: %s",
                        str_time(m_lftc->sadb_lifetime_addtime));
                printf("\tcurrent: %s\n", str_time(tmp_time));
                printf("\tdiff: %lu(s)",
                        (u_long)(m_lftc->sadb_lifetime_addtime == 0 ?
                        0 : (tmp_time - m_lftc->sadb_lifetime_addtime)));

                printf("\thard: %lu(s)",
                        (u_long)(m_lfth == NULL ?
                        0 : m_lfth->sadb_lifetime_addtime));
                printf("\tsoft: %lu(s)\n",
                        (u_long)(m_lfts == NULL ?
                        0 : m_lfts->sadb_lifetime_addtime));

                printf("\tlast: %s",
                        str_time(m_lftc->sadb_lifetime_usetime));
                printf("\thard: %lu(s)",
                        (u_long)(m_lfth == NULL ?
                        0 : m_lfth->sadb_lifetime_usetime));
                printf("\tsoft: %lu(s)\n",
                        (u_long)(m_lfts == NULL ?
                        0 : m_lfts->sadb_lifetime_usetime));

                str_lifetime_byte(m_lftc, "current");
                str_lifetime_byte(m_lfth, "hard");
                str_lifetime_byte(m_lfts, "soft");
                printf("\n");

                printf("\tallocated: %lu",
                        (unsigned long)m_lftc->sadb_lifetime_allocations);
                printf("\thard: %lu",
                        (u_long)(m_lfth == NULL ?
                        0 : m_lfth->sadb_lifetime_allocations));
                printf("\tsoft: %lu\n",
                        (u_long)(m_lfts == NULL ?
                        0 : m_lfts->sadb_lifetime_allocations));
        }

        printf("\tsadb_seq=%lu pid=%lu ",
                (u_long)m->sadb_msg_seq,
                (u_long)m->sadb_msg_pid);

        /* XXX DEBUG */
        printf("refcnt=%u\n", m->sadb_msg_reserved);

        if (m_lft_sw != NULL) {
                printf("\tsw offl use: %s",
                    str_time(m_lft_sw->sadb_lifetime_usetime));
                printf("\tsw offl allocated: %lu",
                    (unsigned long)m_lft_sw->sadb_lifetime_allocations);
                str_lifetime_byte(m_lft_sw, "sw offl");
                printf("\n");
        }

        if (m_lft_hw != NULL) {
                printf("\thw offl use: %s",
                    str_time(m_lft_hw->sadb_lifetime_usetime));
                printf("\thw offl allocated: %lu",
                    (unsigned long)m_lft_hw->sadb_lifetime_allocations);
                str_lifetime_byte(m_lft_hw, "hw offl");
                printf("\n");
        }
}

void
pfkey_spdump(struct sadb_msg *m)
{
        char pbuf[NI_MAXSERV];
        caddr_t mhp[SADB_EXT_MAX + 1];
        struct sadb_address *m_saddr, *m_daddr;
        struct sadb_x_policy *m_xpl;
        struct sadb_lifetime *m_lftc = NULL, *m_lfth = NULL;
        struct sockaddr *sa;
        u_int16_t sport = 0, dport = 0;

        /* check pfkey message. */
        if (pfkey_align(m, mhp)) {
                printf("%s\n", ipsec_strerror());
                return;
        }
        if (pfkey_check(mhp)) {
                printf("%s\n", ipsec_strerror());
                return;
        }

        m_saddr = (struct sadb_address *)mhp[SADB_EXT_ADDRESS_SRC];
        m_daddr = (struct sadb_address *)mhp[SADB_EXT_ADDRESS_DST];
        m_xpl = (struct sadb_x_policy *)mhp[SADB_X_EXT_POLICY];
        m_lftc = (struct sadb_lifetime *)mhp[SADB_EXT_LIFETIME_CURRENT];
        m_lfth = (struct sadb_lifetime *)mhp[SADB_EXT_LIFETIME_HARD];

        if (m_saddr && m_daddr) {
                /* source address */
                sa = (struct sockaddr *)(m_saddr + 1);
                switch (sa->sa_family) {
                case AF_INET:
                case AF_INET6:
                        if (getnameinfo(sa, sa->sa_len, NULL, 0,
                            pbuf, sizeof(pbuf), NI_NUMERICSERV) != 0)
                                sport = 0;      /*XXX*/
                        else
                                sport = atoi(pbuf);
                        printf("%s%s ", str_ipaddr(sa),
                                str_prefport(sa->sa_family,
                                    m_saddr->sadb_address_prefixlen, sport,
                                    m_saddr->sadb_address_proto));
                        break;
                default:
                        printf("unknown-af ");
                        break;
                }

                /* destination address */
                sa = (struct sockaddr *)(m_daddr + 1);
                switch (sa->sa_family) {
                case AF_INET:
                case AF_INET6:
                        if (getnameinfo(sa, sa->sa_len, NULL, 0,
                            pbuf, sizeof(pbuf), NI_NUMERICSERV) != 0)
                                dport = 0;      /*XXX*/
                        else
                                dport = atoi(pbuf);
                        printf("%s%s ", str_ipaddr(sa),
                                str_prefport(sa->sa_family,
                                    m_daddr->sadb_address_prefixlen, dport,
                                    m_saddr->sadb_address_proto));
                        break;
                default:
                        printf("unknown-af ");
                        break;
                }

                /* upper layer protocol */
                if (m_saddr->sadb_address_proto !=
                    m_daddr->sadb_address_proto) {
                        printf("upper layer protocol mismatched.\n");
                        return;
                }
                str_upperspec(m_saddr->sadb_address_proto, sport, dport);
        }
        else
                printf("(no selector, probably per-socket policy) ");

        /* policy */
    {
        char *d_xpl;

        if (m_xpl == NULL) {
                printf("no X_POLICY extension.\n");
                return;
        }
        d_xpl = ipsec_dump_policy((char *)m_xpl, "\n\t");

        /* dump SPD */
        printf("\n\t%s\n", d_xpl);
        free(d_xpl);
    }

        /* lifetime */
        if (m_lftc) {
                printf("\tcreated: %s  ",
                        str_time(m_lftc->sadb_lifetime_addtime));
                printf("lastused: %s\n",
                        str_time(m_lftc->sadb_lifetime_usetime));
        }
        if (m_lfth) {
                printf("\tlifetime: %lu(s) ",
                        (u_long)m_lfth->sadb_lifetime_addtime);
                printf("validtime: %lu(s)\n",
                        (u_long)m_lfth->sadb_lifetime_usetime);
        }


        printf("\tspid=%ld seq=%ld pid=%ld scope=",
                (u_long)m_xpl->sadb_x_policy_id,
                (u_long)m->sadb_msg_seq,
                (u_long)m->sadb_msg_pid);
        GETMSGV2S(str_sp_scope, m_xpl->sadb_x_policy_scope);
        if (m_xpl->sadb_x_policy_scope == IPSEC_POLICYSCOPE_IFNET &&
            if_indextoname(m_xpl->sadb_x_policy_ifindex, pbuf) != NULL)
                printf("ifname=%s", pbuf);
        printf("\n");

        /* XXX TEST */
        printf("\trefcnt=%u\n", m->sadb_msg_reserved);

        return;
}

/*
 * set "ipaddress" to buffer.
 */
static char *
str_ipaddr(struct sockaddr *sa)
{
        static char buf[NI_MAXHOST];
        const int niflag = NI_NUMERICHOST;

        if (sa == NULL)
                return "";

        if (getnameinfo(sa, sa->sa_len, buf, sizeof(buf), NULL, 0, niflag) == 0)
                return buf;
        return NULL;
}

/*
 * set "/prefix[port number]" to buffer.
 */
static char *
str_prefport(u_int family, u_int pref, u_int port, u_int ulp)
{
        static char buf[128];
        char prefbuf[128];
        char portbuf[128];
        int plen;

        switch (family) {
        case AF_INET:
                plen = sizeof(struct in_addr) << 3;
                break;
        case AF_INET6:
                plen = sizeof(struct in6_addr) << 3;
                break;
        default:
                return "?";
        }

        if (pref == plen)
                prefbuf[0] = '\0';
        else
                snprintf(prefbuf, sizeof(prefbuf), "/%u", pref);

        if (ulp == IPPROTO_ICMPV6)
                memset(portbuf, 0, sizeof(portbuf));
        else {
                if (port == IPSEC_PORT_ANY)
                        snprintf(portbuf, sizeof(portbuf), "[%s]", "any");
                else
                        snprintf(portbuf, sizeof(portbuf), "[%u]", port);
        }

        snprintf(buf, sizeof(buf), "%s%s", prefbuf, portbuf);

        return buf;
}

static void
str_upperspec(u_int ulp, u_int p1, u_int p2)
{
        if (ulp == IPSEC_ULPROTO_ANY)
                printf("any");
        else if (ulp == IPPROTO_ICMPV6) {
                printf("icmp6");
                if (!(p1 == IPSEC_PORT_ANY && p2 == IPSEC_PORT_ANY))
                        printf(" %u,%u", p1, p2);
        } else {
                struct protoent *ent;

                switch (ulp) {
                case IPPROTO_IPV4:
                        printf("ip4");
                        break;
                default:
                        ent = getprotobynumber(ulp);
                        if (ent)
                                printf("%s", ent->p_name);
                        else
                                printf("%u", ulp);

                        endprotoent();
                        break;
                }
        }
}

/*
 * set "Mon Day Time Year" to buffer
 */
static char *
str_time(time_t t)
{
        static char buf[128];

        if (t == 0) {
                int i = 0;
                for (;i < 20;) buf[i++] = ' ';
        } else {
                char *t0;
                t0 = ctime(&t);
                memcpy(buf, t0 + 4, 20);
        }

        buf[20] = '\0';

        return(buf);
}

static void
str_lifetime_byte(struct sadb_lifetime *x, char *str)
{
        double y;
        char *unit;
        int w;

        if (x == NULL) {
                printf("\t%s: 0(bytes)", str);
                return;
        }

#if 0
        if ((x->sadb_lifetime_bytes) / 1024 / 1024) {
                y = (x->sadb_lifetime_bytes) * 1.0 / 1024 / 1024;
                unit = "M";
                w = 1;
        } else if ((x->sadb_lifetime_bytes) / 1024) {
                y = (x->sadb_lifetime_bytes) * 1.0 / 1024;
                unit = "K";
                w = 1;
        } else {
                y = (x->sadb_lifetime_bytes) * 1.0;
                unit = "";
                w = 0;
        }
#else
        y = (x->sadb_lifetime_bytes) * 1.0;
        unit = "";
        w = 0;
#endif
        printf("\t%s: %.*f(%sbytes)", str, w, y, unit);
}