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pfkey_dump.c

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

/*
 * 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.
 */

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

#include <sys/types.h>
#include <sys/param.h>
#include <sys/socket.h>
#ifdef HAVE_NETINET6_IPSEC
#  include <netinet6/ipsec.h>
#else
#  include <netinet/ipsec.h>
#endif
#include <net/pfkeyv2.h>

#include <netinet/in.h>
#include <arpa/inet.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_MD5
#define SADB_X_AALG_MD5       SADB_AALG_MD5     
#endif
#ifndef SADB_X_AALG_SHA
#define SADB_X_AALG_SHA       SADB_AALG_SHA
#endif
#ifndef SADB_X_AALG_NULL
#define SADB_X_AALG_NULL      SADB_AALG_NULL
#endif

#ifndef SADB_X_EALG_BLOWFISHCBC
#define SADB_X_EALG_BLOWFISHCBC     SADB_EALG_BLOWFISHCBC
#endif
#ifndef SADB_X_EALG_CAST128CBC
#define SADB_X_EALG_CAST128CBC      SADB_EALG_CAST128CBC
#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 __P((struct sockaddr *));
static char *str_prefport __P((u_int, u_int, u_int, u_int));
static void str_upperspec __P((u_int, u_int, u_int));
static char *str_time __P((time_t));
static void str_lifetime_byte __P((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",
};

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_MD5HMAC, "hmac-md5", },
      { SADB_AALG_SHA1HMAC, "hmac-sha1", },
      { SADB_X_AALG_MD5, "md5", },
      { SADB_X_AALG_SHA, "sha", },
      { SADB_X_AALG_NULL, "null", },
#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_RIPEMD160HMAC
      { SADB_X_AALG_RIPEMD160HMAC, "hmac-ripemd160", },
#endif
#ifdef SADB_X_AALG_AES_XCBC_MAC
      { SADB_X_AALG_AES_XCBC_MAC, "aes-xcbc-mac", },
#endif
      { -1, NULL, },
};

static struct val2str str_alg_enc[] = {
      { SADB_EALG_NONE, "none", },
      { SADB_EALG_DESCBC, "des-cbc", },
      { SADB_EALG_3DESCBC, "3des-cbc", },
      { SADB_EALG_NULL, "null", },
#ifdef SADB_X_EALG_RC5CBC
      { SADB_X_EALG_RC5CBC, "rc5-cbc", },
#endif
      { SADB_X_EALG_CAST128CBC, "cast128-cbc", },
      { SADB_X_EALG_BLOWFISHCBC, "blowfish-cbc", },
#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
      { -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, },
};

/*
 * dump SADB_MSG formated.  For debugging, you should use kdebug_sadb().
 */
void
pfkey_sadump(m)
      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;
      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;
#ifdef SADB_X_EXT_NAT_T_TYPE
      struct sadb_x_nat_t_type *natt_type;
      struct sadb_x_nat_t_port *natt_sport, *natt_dport;
      struct sadb_address *natt_oa;

      int use_natt = 0;
#endif

      /* 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];
#ifdef SADB_X_EXT_NAT_T_TYPE
      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_oa = (struct sadb_address *)mhp[SADB_X_EXT_NAT_T_OA];

      if (natt_type && natt_type->sadb_x_nat_t_type_type)
            use_natt = 1;
#endif

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

      /* destination address */
      if (m_daddr == NULL) {
            printf(" no ADDRESS_DST extension.\n");
            return;
      }
      printf("%s", str_ipaddr((struct sockaddr *)(m_daddr + 1)));
#ifdef SADB_X_EXT_NAT_T_TYPE
      if (use_natt && natt_dport)
            printf("[%u]", ntohs(natt_dport->sadb_x_nat_t_port_port));
#endif
      printf(" ");

      /* SA type */
      if (m_sa == NULL) {
            printf("no SA extension.\n");
            return;
      }
      if (m_sa2 == NULL) {
            printf("no SA2 extension.\n");
            return;
      }
      printf("\n\t");

#ifdef SADB_X_EXT_NAT_T_TYPE
      if (use_natt && m->sadb_msg_satype == SADB_SATYPE_ESP)
            printf("esp-udp ");
      else if (use_natt)
            printf("natt+");

      if (!use_natt || m->sadb_msg_satype != SADB_SATYPE_ESP)
#endif
      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);

#ifdef SADB_X_EXT_NAT_T_TYPE
      /* other NAT-T information */
      if (use_natt && natt_oa)
            printf("\tNAT OA=%s\n",
                   str_ipaddr((struct sockaddr *)(natt_oa + 1)));
#endif

      /* 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->sadb_sa_replay,
            m_sa->sadb_sa_flags);

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

      return;
}

void
pfkey_spdump(m)
      struct sadb_msg *m;
{
      char pbuf[NI_MAXSERV];
      caddr_t mhp[SADB_EXT_MAX + 1];
      struct sadb_address *m_saddr, *m_daddr;
#ifdef SADB_X_EXT_TAG
      struct sadb_x_tag *m_tag;
#endif
      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];
#ifdef SADB_X_EXT_TAG
      m_tag = (struct sadb_x_tag *)mhp[SADB_X_EXT_TAG];
#endif
      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];

#ifdef __linux__
      /* *bsd indicates per-socket policies by omiting src and dst 
       * extensions. Linux always includes them, but we can catch it
       * by checkin for policy id.
       */
      if (m_xpl->sadb_x_policy_id % 8 >= 3) {
            printf("(per-socket policy) ");
      } else
#endif
      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, sysdep_sa_len(sa), 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, sysdep_sa_len(sa), 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);
      }
#ifdef SADB_X_EXT_TAG
      else if (m_tag)
            printf("tagged \"%s\" ", m_tag->sadb_x_tag_name);
#endif
      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");
      if (!d_xpl)
            printf("\n\tPolicy:[%s]\n", ipsec_strerror());
      else {
            /* 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\n",
            (u_long)m_xpl->sadb_x_policy_id,
            (u_long)m->sadb_msg_seq,
            (u_long)m->sadb_msg_pid);

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

      return;
}

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

      if (sa == NULL)
            return "";

      if (getnameinfo(sa, sysdep_sa_len(sa), buf, sizeof(buf), NULL, 0, niflag) == 0)
            return buf;
      return NULL;
}

/*
 * set "/prefix[port number]" to buffer.
 */
static char *
str_prefport(family, pref, port, ulp)
      u_int family, pref, port, 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(ulp, p1, p2)
      u_int ulp, p1, 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(t)
      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(x, str)
      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);
}

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