/*      $KAME: test-pfkey.c,v 1.4 2000/06/07 00:29:14 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/route.h>
#include <net/pfkeyv2.h>
#include <netinet/in.h>
#include <netipsec/keydb.h>
#include <netipsec/key_var.h>
#include <netipsec/key_debug.h>

#include <stdio.h>
#include <stdlib.h>
#include <limits.h>
#include <string.h>
#include <ctype.h>
#include <unistd.h>
#include <errno.h>
#include <netdb.h>

u_char m_buf[BUFSIZ];
u_int m_len;
char *pname;

void Usage(void);
int sendkeymsg(void);
void key_setsadbmsg(u_int);
void key_setsadbsens(void);
void key_setsadbprop(void);
void key_setsadbid(u_int, caddr_t);
void key_setsadblft(u_int, u_int);
void key_setspirange(void);
void key_setsadbkey(u_int, caddr_t);
void key_setsadbsa(void);
void key_setsadbaddr(u_int, u_int, caddr_t);
void key_setsadbextbuf(caddr_t, int, caddr_t, int, caddr_t, int);

void
Usage()
{
        printf("Usage:\t%s number\n", pname);
        exit(0);
}

int
main(ac, av)
        int ac;
        char **av;
{
        pname = *av;

        if (ac == 1) Usage();

        key_setsadbmsg(atoi(*(av+1)));
        sendkeymsg();

        exit(0);
}

/* %%% */
int
sendkeymsg()
{
        u_char rbuf[1024 * 32]; /* XXX: Enough ? Should I do MSG_PEEK ? */
        int so, len;

        if ((so = socket(PF_KEY, SOCK_RAW, PF_KEY_V2)) < 0) {
                perror("socket(PF_KEY)");
                goto end;
        }
#if 0
    {
#include <sys/time.h>
        struct timeval tv;
        tv.tv_sec = 1;
        tv.tv_usec = 0;
        if (setsockopt(so, SOL_SOCKET, SO_RCVTIMEO, &tv, sizeof(tv)) < 0) {
                perror("setsockopt");
                goto end;
        }
    }
#endif

        pfkey_sadump((struct sadb_msg *)m_buf);

        if ((len = send(so, m_buf, m_len, 0)) < 0) {
                perror("send");
                goto end;
        }

        if ((len = recv(so, rbuf, sizeof(rbuf), 0)) < 0) {
                perror("recv");
                goto end;
        }

        pfkey_sadump((struct sadb_msg *)rbuf);

end:
        (void)close(so);
        return(0);
}

void
key_setsadbmsg(type)
        u_int type;
{
        struct sadb_msg m_msg;

        memset(&m_msg, 0, sizeof(m_msg));
        m_msg.sadb_msg_version = PF_KEY_V2;
        m_msg.sadb_msg_type = type;
        m_msg.sadb_msg_errno = 0;
        m_msg.sadb_msg_satype = SADB_SATYPE_ESP;
#if 0
        m_msg.sadb_msg_reserved = 0;
#endif
        m_msg.sadb_msg_seq = 0;
        m_msg.sadb_msg_pid = getpid();

        m_len = sizeof(struct sadb_msg);
        memcpy(m_buf, &m_msg, m_len);

        switch (type) {
        case SADB_GETSPI:
                /*<base, address(SD), SPI range>*/
                key_setsadbaddr(SADB_EXT_ADDRESS_SRC, AF_INET, "10.0.3.4");
                key_setsadbaddr(SADB_EXT_ADDRESS_DST, AF_INET, "127.0.0.1");
                key_setspirange();
                /*<base, SA(*), address(SD)>*/
                break;

        case SADB_ADD:
                /* <base, SA, (lifetime(HSC),) address(SD), (address(P),)
                   key(AE), (identity(SD),) (sensitivity)> */
                key_setsadbaddr(SADB_EXT_ADDRESS_PROXY, AF_INET6, "3ffe::1");
        case SADB_UPDATE:
                key_setsadbsa();
                key_setsadblft(SADB_EXT_LIFETIME_HARD, 10);
                key_setsadblft(SADB_EXT_LIFETIME_SOFT, 5);
                key_setsadbaddr(SADB_EXT_ADDRESS_SRC, AF_INET, "192.168.1.1");
                key_setsadbaddr(SADB_EXT_ADDRESS_DST, AF_INET, "10.0.3.4");
                /* XXX key_setsadbkey(SADB_EXT_KEY_AUTH, "abcde"); */
                key_setsadbkey(SADB_EXT_KEY_AUTH, "1234567812345678");
                key_setsadbkey(SADB_EXT_KEY_ENCRYPT, "12345678");
                key_setsadbid(SADB_EXT_IDENTITY_SRC, "hoge1234@hoge.com");
                key_setsadbid(SADB_EXT_IDENTITY_DST, "hage5678@hage.net");
                key_setsadbsens();
                /* <base, SA, (lifetime(HSC),) address(SD), (address(P),)
                  (identity(SD),) (sensitivity)> */
                break;

        case SADB_DELETE:
                /* <base, SA(*), address(SDP)> */
                key_setsadbsa();
                key_setsadbaddr(SADB_EXT_ADDRESS_SRC, AF_INET, "192.168.1.1");
                key_setsadbaddr(SADB_EXT_ADDRESS_DST, AF_INET, "10.0.3.4");
                key_setsadbaddr(SADB_EXT_ADDRESS_PROXY, AF_INET6, "3ffe::1");
                /* <base, SA(*), address(SDP)> */
                break;

        case SADB_GET:
                /* <base, SA(*), address(SDP)> */
                key_setsadbsa();
                key_setsadbaddr(SADB_EXT_ADDRESS_SRC, AF_INET, "192.168.1.1");
                key_setsadbaddr(SADB_EXT_ADDRESS_DST, AF_INET, "10.0.3.4");
                key_setsadbaddr(SADB_EXT_ADDRESS_PROXY, AF_INET6, "3ffe::1");
                /* <base, SA, (lifetime(HSC),) address(SD), (address(P),)
                   key(AE), (identity(SD),) (sensitivity)> */
                break;

        case SADB_ACQUIRE:
                /* <base, address(SD), (address(P),) (identity(SD),)
                   (sensitivity,) proposal> */
                key_setsadbaddr(SADB_EXT_ADDRESS_SRC, AF_INET, "192.168.1.1");
                key_setsadbaddr(SADB_EXT_ADDRESS_DST, AF_INET, "10.0.3.4");
                key_setsadbaddr(SADB_EXT_ADDRESS_PROXY, AF_INET6, "3ffe::1");
                key_setsadbid(SADB_EXT_IDENTITY_SRC, "hoge1234@hoge.com");
                key_setsadbid(SADB_EXT_IDENTITY_DST, "hage5678@hage.net");
                key_setsadbsens();
                key_setsadbprop();
                /* <base, address(SD), (address(P),) (identity(SD),)
                   (sensitivity,) proposal> */
                break;

        case SADB_REGISTER:
                /* <base> */
                /* <base, supported> */
                break;

        case SADB_EXPIRE:
        case SADB_FLUSH:
                break;

        case SADB_DUMP:
                break;

        case SADB_X_PROMISC:
                /* <base> */
                /* <base, base(, others)> */
                break;

        case SADB_X_PCHANGE:
                break;

        /* for SPD management */
        case SADB_X_SPDFLUSH:
        case SADB_X_SPDDUMP:
                break;

        case SADB_X_SPDADD:
#if 0
            {
                struct sadb_x_policy m_policy;

                m_policy.sadb_x_policy_len = PFKEY_UNIT64(sizeof(m_policy));
                m_policy.sadb_x_policy_exttype = SADB_X_EXT_POLICY;
                m_policy.sadb_x_policy_type = SADB_X_PL_IPSEC;
                m_policy.sadb_x_policy_esp_trans = 1;
                m_policy.sadb_x_policy_ah_trans = 2;
                m_policy.sadb_x_policy_esp_network = 3;
                m_policy.sadb_x_policy_ah_network = 4;
                m_policy.sadb_x_policy_reserved = 0;

                memcpy(m_buf + m_len, &m_policy, sizeof(struct sadb_x_policy));
                m_len += sizeof(struct sadb_x_policy);
            }
#endif

        case SADB_X_SPDDELETE:
                key_setsadbaddr(SADB_EXT_ADDRESS_SRC, AF_INET, "192.168.1.1");
                key_setsadbaddr(SADB_EXT_ADDRESS_DST, AF_INET, "10.0.3.4");
                break;
        }

        ((struct sadb_msg *)m_buf)->sadb_msg_len = PFKEY_UNIT64(m_len);

        return;
}

void
key_setsadbsens()
{
        struct sadb_sens m_sens;
        u_char buf[64];
        u_int s, i, slen, ilen, len;

        /* make sens & integ */
        s = htonl(0x01234567);
        i = htonl(0x89abcdef);
        slen = sizeof(s);
        ilen = sizeof(i);
        memcpy(buf, &s, slen);
        memcpy(buf + slen, &i, ilen);

        len = sizeof(m_sens) + PFKEY_ALIGN8(slen) + PFKEY_ALIGN8(ilen);
        m_sens.sadb_sens_len = PFKEY_UNIT64(len);
        m_sens.sadb_sens_exttype = SADB_EXT_SENSITIVITY;
        m_sens.sadb_sens_dpd = 1;
        m_sens.sadb_sens_sens_level = 2;
        m_sens.sadb_sens_sens_len = PFKEY_ALIGN8(slen);
        m_sens.sadb_sens_integ_level = 3;
        m_sens.sadb_sens_integ_len = PFKEY_ALIGN8(ilen);
        m_sens.sadb_sens_reserved = 0;

        key_setsadbextbuf(m_buf, m_len,
                        (caddr_t)&m_sens, sizeof(struct sadb_sens),
                        buf, slen + ilen);
        m_len += len;

        return;
}

void
key_setsadbprop()
{
        struct sadb_prop m_prop;
        struct sadb_comb *m_comb;
        u_char buf[256];
        u_int len = sizeof(m_prop) + sizeof(m_comb) * 2;

        /* make prop & comb */
        m_prop.sadb_prop_len = PFKEY_UNIT64(len);
        m_prop.sadb_prop_exttype = SADB_EXT_PROPOSAL;
        m_prop.sadb_prop_replay = 0;
        m_prop.sadb_prop_reserved[0] = 0;
        m_prop.sadb_prop_reserved[1] = 0;
        m_prop.sadb_prop_reserved[2] = 0;

        /* the 1st is ESP AES-GCM-16 */
        m_comb = (struct sadb_comb *)buf;
        m_comb->sadb_comb_auth = SADB_AALG_NONE;
        m_comb->sadb_comb_encrypt = SADB_X_EALG_AESGCM16;
        m_comb->sadb_comb_flags = 0;
        m_comb->sadb_comb_auth_minbits = 0;
        m_comb->sadb_comb_auth_maxbits = 0;
        m_comb->sadb_comb_encrypt_minbits = 128;
        m_comb->sadb_comb_encrypt_maxbits = 256;
        m_comb->sadb_comb_reserved = 0;
        m_comb->sadb_comb_soft_allocations = 0;
        m_comb->sadb_comb_hard_allocations = 0;
        m_comb->sadb_comb_soft_bytes = 0;
        m_comb->sadb_comb_hard_bytes = 0;
        m_comb->sadb_comb_soft_addtime = 0;
        m_comb->sadb_comb_hard_addtime = 0;
        m_comb->sadb_comb_soft_usetime = 0;
        m_comb->sadb_comb_hard_usetime = 0;

        /* the 2nd is ESP AES-CBC and AH HMAC-SHA2-256 */
        m_comb = (struct sadb_comb *)(buf + sizeof(*m_comb));
        m_comb->sadb_comb_auth = SADB_X_AALG_SHA2_256;
        m_comb->sadb_comb_encrypt = SADB_X_EALG_RIJNDAELCBC;
        m_comb->sadb_comb_flags = 0;
        m_comb->sadb_comb_auth_minbits = 256;
        m_comb->sadb_comb_auth_maxbits = 256;
        m_comb->sadb_comb_encrypt_minbits = 128;
        m_comb->sadb_comb_encrypt_maxbits = 256;
        m_comb->sadb_comb_reserved = 0;
        m_comb->sadb_comb_soft_allocations = 0;
        m_comb->sadb_comb_hard_allocations = 0;
        m_comb->sadb_comb_soft_bytes = 0;
        m_comb->sadb_comb_hard_bytes = 0;
        m_comb->sadb_comb_soft_addtime = 0;
        m_comb->sadb_comb_hard_addtime = 0;
        m_comb->sadb_comb_soft_usetime = 0;
        m_comb->sadb_comb_hard_usetime = 0;

        key_setsadbextbuf(m_buf, m_len,
                        (caddr_t)&m_prop, sizeof(struct sadb_prop),
                        buf, sizeof(*m_comb) * 2);
        m_len += len;

        return;
}

void
key_setsadbid(ext, str)
        u_int ext;
        caddr_t str;
{
        struct sadb_ident m_id;
        u_int idlen = strlen(str), len;

        len = sizeof(m_id) + PFKEY_ALIGN8(idlen);
        m_id.sadb_ident_len = PFKEY_UNIT64(len);
        m_id.sadb_ident_exttype = ext;
        m_id.sadb_ident_type = SADB_IDENTTYPE_USERFQDN;
        m_id.sadb_ident_reserved = 0;
        m_id.sadb_ident_id = getpid();

        key_setsadbextbuf(m_buf, m_len,
                        (caddr_t)&m_id, sizeof(struct sadb_ident),
                        str, idlen);
        m_len += len;

        return;
}

void
key_setsadblft(ext, time)
        u_int ext, time;
{
        struct sadb_lifetime m_lft;

        m_lft.sadb_lifetime_len = PFKEY_UNIT64(sizeof(m_lft));
        m_lft.sadb_lifetime_exttype = ext;
        m_lft.sadb_lifetime_allocations = 0x2;
        m_lft.sadb_lifetime_bytes = 0x1000;
        m_lft.sadb_lifetime_addtime = time;
        m_lft.sadb_lifetime_usetime = 0x0020;

        memcpy(m_buf + m_len, &m_lft, sizeof(struct sadb_lifetime));
        m_len += sizeof(struct sadb_lifetime);

        return;
}

void
key_setspirange()
{
        struct sadb_spirange m_spi;

        m_spi.sadb_spirange_len = PFKEY_UNIT64(sizeof(m_spi));
        m_spi.sadb_spirange_exttype = SADB_EXT_SPIRANGE;
        m_spi.sadb_spirange_min = 0x00001000;
        m_spi.sadb_spirange_max = 0x00002000;
        m_spi.sadb_spirange_reserved = 0;

        memcpy(m_buf + m_len, &m_spi, sizeof(struct sadb_spirange));
        m_len += sizeof(struct sadb_spirange);

        return;
}

void
key_setsadbkey(ext, str)
        u_int ext;
        caddr_t str;
{
        struct sadb_key m_key;
        u_int keylen = strlen(str);
        u_int len;

        len = sizeof(struct sadb_key) + PFKEY_ALIGN8(keylen);
        m_key.sadb_key_len = PFKEY_UNIT64(len);
        m_key.sadb_key_exttype = ext;
        m_key.sadb_key_bits = keylen * 8;
        m_key.sadb_key_reserved = 0;

        key_setsadbextbuf(m_buf, m_len,
                        (caddr_t)&m_key, sizeof(struct sadb_key),
                        str, keylen);
        m_len += len;

        return;
}

void
key_setsadbsa()
{
        struct sadb_sa m_sa;

        m_sa.sadb_sa_len = PFKEY_UNIT64(sizeof(struct sadb_sa));
        m_sa.sadb_sa_exttype = SADB_EXT_SA;
        m_sa.sadb_sa_spi = htonl(0x12345678);
        m_sa.sadb_sa_replay = 4;
        m_sa.sadb_sa_state = 0;
        m_sa.sadb_sa_auth = SADB_AALG_NONE;
        m_sa.sadb_sa_encrypt = SADB_X_EALG_AESGCM16;
        m_sa.sadb_sa_flags = 0;

        memcpy(m_buf + m_len, &m_sa, sizeof(struct sadb_sa));
        m_len += sizeof(struct sadb_sa);

        return;
}

void
key_setsadbaddr(ext, af, str)
        u_int ext, af;
        caddr_t str;
{
        struct sadb_address m_addr;
        u_int len;
        struct addrinfo hints, *res;
        const char *serv;
        int plen;

        switch (af) {
        case AF_INET:
                plen = sizeof(struct in_addr) << 3;
                break;
        case AF_INET6:
                plen = sizeof(struct in6_addr) << 3;
                break;
        default:
                /* XXX bark */
                exit(1);
        }

        /* make sockaddr buffer */
        memset(&hints, 0, sizeof(hints));
        hints.ai_family = af;
        hints.ai_socktype = SOCK_DGRAM; /*dummy*/
        hints.ai_flags = AI_NUMERICHOST;
        serv = (ext == SADB_EXT_ADDRESS_PROXY ? "0" : "4660");  /*0x1234*/
        if (getaddrinfo(str, serv, &hints, &res) != 0 || res->ai_next) {
                /* XXX bark */
                exit(1);
        }
        
        len = sizeof(struct sadb_address) + PFKEY_ALIGN8(res->ai_addrlen);
        m_addr.sadb_address_len = PFKEY_UNIT64(len);
        m_addr.sadb_address_exttype = ext;
        m_addr.sadb_address_proto =
                (ext == SADB_EXT_ADDRESS_PROXY ? 0 : IPPROTO_TCP);
        m_addr.sadb_address_prefixlen = plen;
        m_addr.sadb_address_reserved = 0;

        key_setsadbextbuf(m_buf, m_len,
                        (caddr_t)&m_addr, sizeof(struct sadb_address),
                        (caddr_t)res->ai_addr, res->ai_addrlen);
        m_len += len;

        freeaddrinfo(res);

        return;
}

void
key_setsadbextbuf(dst, off, ebuf, elen, vbuf, vlen)
        caddr_t dst, ebuf, vbuf;
        int off, elen, vlen;
{
        memset(dst + off, 0, elen + vlen);
        memcpy(dst + off, (caddr_t)ebuf, elen);
        memcpy(dst + off + elen, vbuf, vlen);

        return;
}