ip/xfrm_state.c

   1 /* $USAGI: $ */
   2
   3 /*
   4  * Copyright (C)2004 USAGI/WIDE Project
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  */
  20 /*
  21  * based on iproute.c
  22  */
  23 /*
  24  * Authors:
  25  *      Masahide NAKAMURA @USAGI
  26  */
  27
  28 #include <stdio.h>
  29 #include <stdlib.h>
  30 #include <string.h>
  31 #include <netdb.h>
  32 #include <linux/xfrm.h>
  33 #include "utils.h"
  34 #include "xfrm.h"
  35 #include "ip_common.h"
  36
  37 //#define NLMSG_DELETEALL_BUF_SIZE (4096-512)
  38 #define NLMSG_DELETEALL_BUF_SIZE 8192
  39
  40 /*
  41  * Receiving buffer defines:
  42  * nlmsg
  43  *   data = struct xfrm_usersa_info
  44  *   rtattr
  45  *   rtattr
  46  *   ... (max count of rtattr is XFRM_MAX+1
  47  *
  48  *  each rtattr data = struct xfrm_algo(dynamic size) or xfrm_address_t
  49  */
  50 #define NLMSG_BUF_SIZE 4096
  51 #define RTA_BUF_SIZE 2048
  52 #define XFRM_ALGO_KEY_BUF_SIZE 512
  53
  54 static void usage(void) __attribute__((noreturn));
  55
  56 static void usage(void)
  57 {
  58         fprintf(stderr, "Usage: ip xfrm state { add | update } ID [ XFRM_OPT ] [ mode MODE ]\n");
  59         fprintf(stderr, "        [ reqid REQID ] [ seq SEQ ] [ replay-window SIZE ] [ flag FLAG-LIST ]\n");
  60         fprintf(stderr, "        [ encap ENCAP ] [ sel SELECTOR ] [ replay-seq SEQ ]\n");
  61         fprintf(stderr, "        [ replay-oseq SEQ ] [ LIMIT-LIST ]\n");
  62         fprintf(stderr, "Usage: ip xfrm state allocspi ID [ mode MODE ] [ reqid REQID ] [ seq SEQ ]\n");
  63         fprintf(stderr, "        [ min SPI max SPI ]\n");
  64         fprintf(stderr, "Usage: ip xfrm state { delete | get } ID\n");
  65         fprintf(stderr, "Usage: ip xfrm state { deleteall | list } [ ID ] [ mode MODE ] [ reqid REQID ]\n");
  66         fprintf(stderr, "        [ flag FLAG-LIST ]\n");
  67         fprintf(stderr, "Usage: ip xfrm state flush [ proto XFRM_PROTO ]\n");
  68         fprintf(stderr, "Usage: ip xfrm state count \n");
  69
  70         fprintf(stderr, "ID := [ src ADDR ] [ dst ADDR ] [ proto XFRM_PROTO ] [ spi SPI ] [mark MARK [mask MASK]]\n");
  71         //fprintf(stderr, "XFRM_PROTO := [ esp | ah | comp ]\n");
  72         fprintf(stderr, "XFRM_PROTO := [ ");
  73         fprintf(stderr, "%s | ", strxf_xfrmproto(IPPROTO_ESP));
  74         fprintf(stderr, "%s | ", strxf_xfrmproto(IPPROTO_AH));
  75         fprintf(stderr, "%s | ", strxf_xfrmproto(IPPROTO_COMP));
  76         fprintf(stderr, "%s | ", strxf_xfrmproto(IPPROTO_ROUTING));
  77         fprintf(stderr, "%s ", strxf_xfrmproto(IPPROTO_DSTOPTS));
  78         fprintf(stderr, "]\n");
  79
  80         //fprintf(stderr, "SPI - security parameter index(default=0)\n");
  81
  82         fprintf(stderr, "MODE := [ transport | tunnel | ro | beet ](default=transport)\n");
  83         //fprintf(stderr, "REQID - number(default=0)\n");
  84
  85         fprintf(stderr, "FLAG-LIST := [ FLAG-LIST ] FLAG\n");
  86         fprintf(stderr, "FLAG := [ noecn | decap-dscp | nopmtudisc | wildrecv | icmp | af-unspec ]\n");
  87
  88         fprintf(stderr, "ENCAP := ENCAP-TYPE SPORT DPORT OADDR\n");
  89         fprintf(stderr, "ENCAP-TYPE := espinudp | espinudp-nonike\n");
  90
  91         fprintf(stderr, "ALGO-LIST := [ ALGO-LIST ] | [ ALGO ]\n");
  92         fprintf(stderr, "ALGO := ALGO_TYPE ALGO_NAME ALGO_KEY "
  93                         "[ ALGO_ICV_LEN ]\n");
  94         fprintf(stderr, "ALGO_TYPE := [ ");
  95         fprintf(stderr, "%s | ", strxf_algotype(XFRMA_ALG_AEAD));
  96         fprintf(stderr, "%s | ", strxf_algotype(XFRMA_ALG_CRYPT));
  97         fprintf(stderr, "%s | ", strxf_algotype(XFRMA_ALG_AUTH));
  98         fprintf(stderr, "%s ", strxf_algotype(XFRMA_ALG_COMP));
  99         fprintf(stderr, "]\n");
 100
 101         //fprintf(stderr, "ALGO_NAME - algorithm name\n");
 102         //fprintf(stderr, "ALGO_KEY - algorithm key\n");
 103
 104         fprintf(stderr, "SELECTOR := src ADDR[/PLEN] dst ADDR[/PLEN] [ UPSPEC ] [ dev DEV ]\n");
 105
 106         fprintf(stderr, "UPSPEC := proto PROTO [ [ sport PORT ] [ dport PORT ] |\n");
 107         fprintf(stderr, "                        [ type NUMBER ] [ code NUMBER ] ]\n");
 108
 109
 110         //fprintf(stderr, "DEV - device name(default=none)\n");
 111         fprintf(stderr, "LIMIT-LIST := [ LIMIT-LIST ] | [ limit LIMIT ]\n");
 112         fprintf(stderr, "LIMIT := [ [time-soft|time-hard|time-use-soft|time-use-hard] SECONDS ] |\n");
 113         fprintf(stderr, "         [ [byte-soft|byte-hard] SIZE ] | [ [packet-soft|packet-hard] COUNT ]\n");
 114         exit(-1);
 115 }
 116
 117 static int xfrm_algo_parse(struct xfrm_algo *alg, enum xfrm_attr_type_t type,
 118                            char *name, char *key, char *buf, int max)
 119 {
 120         int len;
 121         int slen = strlen(key);
 122
 123 #if 0
 124         /* XXX: verifying both name and key is required! */
 125         fprintf(stderr, "warning: ALGONAME/ALGOKEY will send to kernel promiscuously!(verifying them isn't implemented yet)\n");
 126 #endif
 127
 128         strncpy(alg->alg_name, name, sizeof(alg->alg_name));
 129
 130         if (slen > 2 && strncmp(key, "0x", 2) == 0) {
 131                 /* split two chars "0x" from the top */
 132                 char *p = key + 2;
 133                 int plen = slen - 2;
 134                 int i;
 135                 int j;
 136
 137                 /* Converting hexadecimal numbered string into real key;
 138                  * Convert each two chars into one char(value). If number
 139                  * of the length is odd, add zero on the top for rounding.
 140                  */
 141
 142                 /* calculate length of the converted values(real key) */
 143                 len = (plen + 1) / 2;
 144                 if (len > max)
 145                         invarg("\"ALGOKEY\" makes buffer overflow\n", key);
 146
 147                 for (i = - (plen % 2), j = 0; j < len; i += 2, j++) {
 148                         char vbuf[3];
 149                         __u8 val;
 150
 151                         vbuf[0] = i >= 0 ? p[i] : '0';
 152                         vbuf[1] = p[i + 1];
 153                         vbuf[2] = '\0';
 154
 155                         if (get_u8(&val, vbuf, 16))
 156                                 invarg("\"ALGOKEY\" is invalid", key);
 157
 158                         buf[j] = val;
 159                 }
 160         } else {
 161                 len = slen;
 162                 if (len > 0) {
 163                         if (len > max)
 164                                 invarg("\"ALGOKEY\" makes buffer overflow\n", key);
 165
 166                         strncpy(buf, key, len);
 167                 }
 168         }
 169
 170         alg->alg_key_len = len * 8;
 171
 172         return 0;
 173 }
 174
 175 static int xfrm_seq_parse(__u32 *seq, int *argcp, char ***argvp)
 176 {
 177         int argc = *argcp;
 178         char **argv = *argvp;
 179
 180         if (get_u32(seq, *argv, 0))
 181                 invarg("\"SEQ\" is invalid", *argv);
 182
 183         *seq = htonl(*seq);
 184
 185         *argcp = argc;
 186         *argvp = argv;
 187
 188         return 0;
 189 }
 190
 191 static int xfrm_state_flag_parse(__u8 *flags, int *argcp, char ***argvp)
 192 {
 193         int argc = *argcp;
 194         char **argv = *argvp;
 195         int len = strlen(*argv);
 196
 197         if (len > 2 && strncmp(*argv, "0x", 2) == 0) {
 198                 __u8 val = 0;
 199
 200                 if (get_u8(&val, *argv, 16))
 201                         invarg("\"FLAG\" is invalid", *argv);
 202                 *flags = val;
 203         } else {
 204                 while (1) {
 205                         if (strcmp(*argv, "noecn") == 0)
 206                                 *flags |= XFRM_STATE_NOECN;
 207                         else if (strcmp(*argv, "decap-dscp") == 0)
 208                                 *flags |= XFRM_STATE_DECAP_DSCP;
 209                         else if (strcmp(*argv, "nopmtudisc") == 0)
 210                                 *flags |= XFRM_STATE_NOPMTUDISC;
 211                         else if (strcmp(*argv, "wildrecv") == 0)
 212                                 *flags |= XFRM_STATE_WILDRECV;
 213                         else if (strcmp(*argv, "icmp") == 0)
 214                                 *flags |= XFRM_STATE_ICMP;
 215                         else if (strcmp(*argv, "af-unspec") == 0)
 216                                 *flags |= XFRM_STATE_AF_UNSPEC;
 217                         else {
 218                                 PREV_ARG(); /* back track */
 219                                 break;
 220                         }
 221
 222                         if (!NEXT_ARG_OK())
 223                                 break;
 224                         NEXT_ARG();
 225                 }
 226         }
 227
 228         *argcp = argc;
 229         *argvp = argv;
 230
 231         return 0;
 232 }
 233
 234 static int xfrm_state_modify(int cmd, unsigned flags, int argc, char **argv)
 235 {
 236         struct rtnl_handle rth;
 237         struct {
 238                 struct nlmsghdr         n;
 239                 struct xfrm_usersa_info xsinfo;
 240                 char                    buf[RTA_BUF_SIZE];
 241         } req;
 242         struct xfrm_replay_state replay;
 243         char *idp = NULL;
 244         char *aeadop = NULL;
 245         char *ealgop = NULL;
 246         char *aalgop = NULL;
 247         char *calgop = NULL;
 248         char *coap = NULL;
 249         struct xfrm_mark mark = {0, 0};
 250
 251         memset(&req, 0, sizeof(req));
 252         memset(&replay, 0, sizeof(replay));
 253
 254         req.n.nlmsg_len = NLMSG_LENGTH(sizeof(req.xsinfo));
 255         req.n.nlmsg_flags = NLM_F_REQUEST|flags;
 256         req.n.nlmsg_type = cmd;
 257         req.xsinfo.family = preferred_family;
 258
 259         req.xsinfo.lft.soft_byte_limit = XFRM_INF;
 260         req.xsinfo.lft.hard_byte_limit = XFRM_INF;
 261         req.xsinfo.lft.soft_packet_limit = XFRM_INF;
 262         req.xsinfo.lft.hard_packet_limit = XFRM_INF;
 263
 264         while (argc > 0) {
 265                 if (strcmp(*argv, "mode") == 0) {
 266                         NEXT_ARG();
 267                         xfrm_mode_parse(&req.xsinfo.mode, &argc, &argv);
 268                 } else if (strcmp(*argv, "mark") == 0) {
 269                         xfrm_parse_mark(&mark, &argc, &argv);
 270                 } else if (strcmp(*argv, "reqid") == 0) {
 271                         NEXT_ARG();
 272                         xfrm_reqid_parse(&req.xsinfo.reqid, &argc, &argv);
 273                 } else if (strcmp(*argv, "seq") == 0) {
 274                         NEXT_ARG();
 275                         xfrm_seq_parse(&req.xsinfo.seq, &argc, &argv);
 276                 } else if (strcmp(*argv, "replay-window") == 0) {
 277                         NEXT_ARG();
 278                         if (get_u8(&req.xsinfo.replay_window, *argv, 0))
 279                                 invarg("\"replay-window\" value is invalid", *argv);
 280                 } else if (strcmp(*argv, "replay-seq") == 0) {
 281                         NEXT_ARG();
 282                         if (get_u32(&replay.seq, *argv, 0))
 283                                 invarg("\"replay-seq\" value is invalid", *argv);
 284                 } else if (strcmp(*argv, "replay-oseq") == 0) {
 285                         NEXT_ARG();
 286                         if (get_u32(&replay.oseq, *argv, 0))
 287                                 invarg("\"replay-oseq\" value is invalid", *argv);
 288                 } else if (strcmp(*argv, "flag") == 0) {
 289                         NEXT_ARG();
 290                         xfrm_state_flag_parse(&req.xsinfo.flags, &argc, &argv);
 291                 } else if (strcmp(*argv, "sel") == 0) {
 292                         NEXT_ARG();
 293                         xfrm_selector_parse(&req.xsinfo.sel, &argc, &argv);
 294                 } else if (strcmp(*argv, "limit") == 0) {
 295                         NEXT_ARG();
 296                         xfrm_lifetime_cfg_parse(&req.xsinfo.lft, &argc, &argv);
 297                 } else if (strcmp(*argv, "encap") == 0) {
 298                         struct xfrm_encap_tmpl encap;
 299                         inet_prefix oa;
 300                         NEXT_ARG();
 301                         xfrm_encap_type_parse(&encap.encap_type, &argc, &argv);
 302                         NEXT_ARG();
 303                         if (get_u16(&encap.encap_sport, *argv, 0))
 304                                 invarg("\"encap\" sport value is invalid", *argv);
 305                         encap.encap_sport = htons(encap.encap_sport);
 306                         NEXT_ARG();
 307                         if (get_u16(&encap.encap_dport, *argv, 0))
 308                                 invarg("\"encap\" dport value is invalid", *argv);
 309                         encap.encap_dport = htons(encap.encap_dport);
 310                         NEXT_ARG();
 311                         get_addr(&oa, *argv, AF_UNSPEC);
 312                         memcpy(&encap.encap_oa, &oa.data, sizeof(encap.encap_oa));
 313                         addattr_l(&req.n, sizeof(req.buf), XFRMA_ENCAP,
 314                                   (void *)&encap, sizeof(encap));
 315                 } else if (strcmp(*argv, "coa") == 0) {
 316                         inet_prefix coa;
 317                         xfrm_address_t xcoa;
 318
 319                         if (coap)
 320                                 duparg("coa", *argv);
 321                         coap = *argv;
 322
 323                         NEXT_ARG();
 324
 325                         get_prefix(&coa, *argv, preferred_family);
 326                         if (coa.family == AF_UNSPEC)
 327                                 invarg("\"coa\" address family is AF_UNSPEC", *argv);
 328                         if (coa.bytelen > sizeof(xcoa))
 329                                 invarg("\"coa\" address length is too large", *argv);
 330
 331                         memset(&xcoa, 0, sizeof(xcoa));
 332                         memcpy(&xcoa, &coa.data, coa.bytelen);
 333
 334                         addattr_l(&req.n, sizeof(req.buf), XFRMA_COADDR,
 335                                   (void *)&xcoa, sizeof(xcoa));
 336                 } else {
 337                         /* try to assume ALGO */
 338                         int type = xfrm_algotype_getbyname(*argv);
 339                         switch (type) {
 340                         case XFRMA_ALG_AEAD:
 341                         case XFRMA_ALG_CRYPT:
 342                         case XFRMA_ALG_AUTH:
 343                         case XFRMA_ALG_COMP:
 344                         {
 345                                 /* ALGO */
 346                                 struct {
 347                                         union {
 348                                                 struct xfrm_algo alg;
 349                                                 struct xfrm_algo_aead aead;
 350                                         } u;
 351                                         char buf[XFRM_ALGO_KEY_BUF_SIZE];
 352                                 } alg = {};
 353                                 int len;
 354                                 __u32 icvlen;
 355                                 char *name;
 356                                 char *key;
 357                                 char *buf;
 358
 359                                 switch (type) {
 360                                 case XFRMA_ALG_AEAD:
 361                                         if (aeadop)
 362                                                 duparg("ALGOTYPE", *argv);
 363                                         aeadop = *argv;
 364                                         break;
 365                                 case XFRMA_ALG_CRYPT:
 366                                         if (ealgop)
 367                                                 duparg("ALGOTYPE", *argv);
 368                                         ealgop = *argv;
 369                                         break;
 370                                 case XFRMA_ALG_AUTH:
 371                                         if (aalgop)
 372                                                 duparg("ALGOTYPE", *argv);
 373                                         aalgop = *argv;
 374                                         break;
 375                                 case XFRMA_ALG_COMP:
 376                                         if (calgop)
 377                                                 duparg("ALGOTYPE", *argv);
 378                                         calgop = *argv;
 379                                         break;
 380                                 default:
 381                                         /* not reached */
 382                                         invarg("\"ALGOTYPE\" is invalid\n", *argv);
 383                                 }
 384
 385                                 if (!NEXT_ARG_OK())
 386                                         missarg("ALGONAME");
 387                                 NEXT_ARG();
 388                                 name = *argv;
 389
 390                                 if (!NEXT_ARG_OK())
 391                                         missarg("ALGOKEY");
 392                                 NEXT_ARG();
 393                                 key = *argv;
 394
 395                                 buf = alg.u.alg.alg_key;
 396                                 len = sizeof(alg.u.alg);
 397
 398                                 if (type != XFRMA_ALG_AEAD)
 399                                         goto parse_algo;
 400
 401                                 if (!NEXT_ARG_OK())
 402                                         missarg("ALGOICVLEN");
 403                                 NEXT_ARG();
 404                                 if (get_u32(&icvlen, *argv, 0))
 405                                         invarg("\"aead\" ICV length is invalid",
 406                                                *argv);
 407                                 alg.u.aead.alg_icv_len = icvlen;
 408
 409                                 buf = alg.u.aead.alg_key;
 410                                 len = sizeof(alg.u.aead);
 411
 412 parse_algo:
 413                                 xfrm_algo_parse((void *)&alg, type, name, key,
 414                                                 buf, sizeof(alg.buf));
 415                                 len += alg.u.alg.alg_key_len;
 416
 417                                 addattr_l(&req.n, sizeof(req.buf), type,
 418                                           (void *)&alg, len);
 419                                 break;
 420                         }
 421                         default:
 422                                 /* try to assume ID */
 423                                 if (idp)
 424                                         invarg("unknown", *argv);
 425                                 idp = *argv;
 426
 427                                 /* ID */
 428                                 xfrm_id_parse(&req.xsinfo.saddr, &req.xsinfo.id,
 429                                               &req.xsinfo.family, 0, &argc, &argv);
 430                                 if (preferred_family == AF_UNSPEC)
 431                                         preferred_family = req.xsinfo.family;
 432                         }
 433                 }
 434                 argc--; argv++;
 435         }
 436
 437         if (replay.seq || replay.oseq)
 438                 addattr_l(&req.n, sizeof(req.buf), XFRMA_REPLAY_VAL,
 439                           (void *)&replay, sizeof(replay));
 440
 441         if (!idp) {
 442                 fprintf(stderr, "Not enough information: \"ID\" is required\n");
 443                 exit(1);
 444         }
 445
 446         if (mark.m & mark.v) {
 447                 int r = addattr_l(&req.n, sizeof(req.buf), XFRMA_MARK,
 448                                   (void *)&mark, sizeof(mark));
 449                 if (r < 0) {
 450                         fprintf(stderr, "XFRMA_MARK failed\n");
 451                         exit(1);
 452                 }
 453         }
 454
 455         switch (req.xsinfo.mode) {
 456         case XFRM_MODE_TRANSPORT:
 457         case XFRM_MODE_TUNNEL:
 458                 if (!xfrm_xfrmproto_is_ipsec(req.xsinfo.id.proto)) {
 459                         fprintf(stderr, "\"mode\" is invalid with proto=%s\n",
 460                                 strxf_xfrmproto(req.xsinfo.id.proto));
 461                         exit(1);
 462                 }
 463                 break;
 464         case XFRM_MODE_ROUTEOPTIMIZATION:
 465         case XFRM_MODE_IN_TRIGGER:
 466                 if (!xfrm_xfrmproto_is_ro(req.xsinfo.id.proto)) {
 467                         fprintf(stderr, "\"mode\" is invalid with proto=%s\n",
 468                                 strxf_xfrmproto(req.xsinfo.id.proto));
 469                         exit(1);
 470                 }
 471                 if (req.xsinfo.id.spi != 0) {
 472                         fprintf(stderr, "\"spi\" must be 0 with proto=%s\n",
 473                                 strxf_xfrmproto(req.xsinfo.id.proto));
 474                         exit(1);
 475                 }
 476                 break;
 477         default:
 478                 break;
 479         }
 480
 481         if (aeadop || ealgop || aalgop || calgop) {
 482                 if (!xfrm_xfrmproto_is_ipsec(req.xsinfo.id.proto)) {
 483                         fprintf(stderr, "\"ALGO\" is invalid with proto=%s\n",
 484                                 strxf_xfrmproto(req.xsinfo.id.proto));
 485                         exit(1);
 486                 }
 487         } else {
 488                 if (xfrm_xfrmproto_is_ipsec(req.xsinfo.id.proto)) {
 489                         fprintf(stderr, "\"ALGO\" is required with proto=%s\n",
 490                                 strxf_xfrmproto(req.xsinfo.id.proto));
 491                         exit (1);
 492                 }
 493         }
 494
 495         if (coap) {
 496                 if (!xfrm_xfrmproto_is_ro(req.xsinfo.id.proto)) {
 497                         fprintf(stderr, "\"coa\" is invalid with proto=%s\n",
 498                                 strxf_xfrmproto(req.xsinfo.id.proto));
 499                         exit(1);
 500                 }
 501         } else {
 502                 if (xfrm_xfrmproto_is_ro(req.xsinfo.id.proto)) {
 503                         fprintf(stderr, "\"coa\" is required with proto=%s\n",
 504                                 strxf_xfrmproto(req.xsinfo.id.proto));
 505                         exit (1);
 506                 }
 507         }
 508
 509         if (rtnl_open_byproto(&rth, 0, NETLINK_XFRM) < 0)
 510                 exit(1);
 511
 512         if (req.xsinfo.family == AF_UNSPEC)
 513                 req.xsinfo.family = AF_INET;
 514
 515         if (rtnl_talk(&rth, &req.n, 0, 0, NULL, NULL, NULL) < 0)
 516                 exit(2);
 517
 518         rtnl_close(&rth);
 519
 520         return 0;
 521 }
 522
 523 static int xfrm_state_allocspi(int argc, char **argv)
 524 {
 525         struct rtnl_handle rth;
 526         struct {
 527                 struct nlmsghdr         n;
 528                 struct xfrm_userspi_info xspi;
 529                 char                    buf[RTA_BUF_SIZE];
 530         } req;
 531         char *idp = NULL;
 532         char *minp = NULL;
 533         char *maxp = NULL;
 534         struct xfrm_mark mark = {0, 0};
 535         char res_buf[NLMSG_BUF_SIZE];
 536         struct nlmsghdr *res_n = (struct nlmsghdr *)res_buf;
 537
 538         memset(res_buf, 0, sizeof(res_buf));
 539
 540         memset(&req, 0, sizeof(req));
 541
 542         req.n.nlmsg_len = NLMSG_LENGTH(sizeof(req.xspi));
 543         req.n.nlmsg_flags = NLM_F_REQUEST;
 544         req.n.nlmsg_type = XFRM_MSG_ALLOCSPI;
 545         req.xspi.info.family = preferred_family;
 546
 547 #if 0
 548         req.xsinfo.lft.soft_byte_limit = XFRM_INF;
 549         req.xsinfo.lft.hard_byte_limit = XFRM_INF;
 550         req.xsinfo.lft.soft_packet_limit = XFRM_INF;
 551         req.xsinfo.lft.hard_packet_limit = XFRM_INF;
 552 #endif
 553
 554         while (argc > 0) {
 555                 if (strcmp(*argv, "mode") == 0) {
 556                         NEXT_ARG();
 557                         xfrm_mode_parse(&req.xspi.info.mode, &argc, &argv);
 558                 } else if (strcmp(*argv, "mark") == 0) {
 559                         xfrm_parse_mark(&mark, &argc, &argv);
 560                 } else if (strcmp(*argv, "reqid") == 0) {
 561                         NEXT_ARG();
 562                         xfrm_reqid_parse(&req.xspi.info.reqid, &argc, &argv);
 563                 } else if (strcmp(*argv, "seq") == 0) {
 564                         NEXT_ARG();
 565                         xfrm_seq_parse(&req.xspi.info.seq, &argc, &argv);
 566                 } else if (strcmp(*argv, "min") == 0) {
 567                         if (minp)
 568                                 duparg("min", *argv);
 569                         minp = *argv;
 570
 571                         NEXT_ARG();
 572
 573                         if (get_u32(&req.xspi.min, *argv, 0))
 574                                 invarg("\"min\" value is invalid", *argv);
 575                 } else if (strcmp(*argv, "max") == 0) {
 576                         if (maxp)
 577                                 duparg("max", *argv);
 578                         maxp = *argv;
 579
 580                         NEXT_ARG();
 581
 582                         if (get_u32(&req.xspi.max, *argv, 0))
 583                                 invarg("\"max\" value is invalid", *argv);
 584                 } else {
 585                         /* try to assume ID */
 586                         if (idp)
 587                                 invarg("unknown", *argv);
 588                         idp = *argv;
 589
 590                         /* ID */
 591                         xfrm_id_parse(&req.xspi.info.saddr, &req.xspi.info.id,
 592                                       &req.xspi.info.family, 0, &argc, &argv);
 593                         if (req.xspi.info.id.spi) {
 594                                 fprintf(stderr, "\"SPI\" must be zero\n");
 595                                 exit(1);
 596                         }
 597                         if (preferred_family == AF_UNSPEC)
 598                                 preferred_family = req.xspi.info.family;
 599                 }
 600                 argc--; argv++;
 601         }
 602
 603         if (!idp) {
 604                 fprintf(stderr, "Not enough information: \"ID\" is required\n");
 605                 exit(1);
 606         }
 607
 608         if (minp) {
 609                 if (!maxp) {
 610                         fprintf(stderr, "\"max\" is missing\n");
 611                         exit(1);
 612                 }
 613                 if (req.xspi.min > req.xspi.max) {
 614                         fprintf(stderr, "\"min\" valie is larger than \"max\" one\n");
 615                         exit(1);
 616                 }
 617         } else {
 618                 if (maxp) {
 619                         fprintf(stderr, "\"min\" is missing\n");
 620                         exit(1);
 621                 }
 622
 623                 /* XXX: Default value defined in PF_KEY;
 624                  * See kernel's net/key/af_key.c(pfkey_getspi).
 625                  */
 626                 req.xspi.min = 0x100;
 627                 req.xspi.max = 0x0fffffff;
 628
 629                 /* XXX: IPCOMP spi is 16-bits;
 630                  * See kernel's net/xfrm/xfrm_user(verify_userspi_info).
 631                  */
 632                 if (req.xspi.info.id.proto == IPPROTO_COMP)
 633                         req.xspi.max = 0xffff;
 634         }
 635
 636         if (mark.m & mark.v) {
 637                 int r = addattr_l(&req.n, sizeof(req.buf), XFRMA_MARK,
 638                                   (void *)&mark, sizeof(mark));
 639                 if (r < 0) {
 640                         fprintf(stderr, "XFRMA_MARK failed\n");
 641                         exit(1);
 642                 }
 643         }
 644
 645         if (rtnl_open_byproto(&rth, 0, NETLINK_XFRM) < 0)
 646                 exit(1);
 647
 648         if (req.xspi.info.family == AF_UNSPEC)
 649                 req.xspi.info.family = AF_INET;
 650
 651
 652         if (rtnl_talk(&rth, &req.n, 0, 0, res_n, NULL, NULL) < 0)
 653                 exit(2);
 654
 655         if (xfrm_state_print(NULL, res_n, (void*)stdout) < 0) {
 656                 fprintf(stderr, "An error :-)\n");
 657                 exit(1);
 658         }
 659
 660         rtnl_close(&rth);
 661
 662         return 0;
 663 }
 664
 665 static int xfrm_state_filter_match(struct xfrm_usersa_info *xsinfo)
 666 {
 667         if (!filter.use)
 668                 return 1;
 669
 670         if (filter.id_src_mask)
 671                 if (xfrm_addr_match(&xsinfo->saddr, &filter.xsinfo.saddr,
 672                                     filter.id_src_mask))
 673                         return 0;
 674         if (filter.id_dst_mask)
 675                 if (xfrm_addr_match(&xsinfo->id.daddr, &filter.xsinfo.id.daddr,
 676                                     filter.id_dst_mask))
 677                         return 0;
 678         if ((xsinfo->id.proto^filter.xsinfo.id.proto)&filter.id_proto_mask)
 679                 return 0;
 680         if ((xsinfo->id.spi^filter.xsinfo.id.spi)&filter.id_spi_mask)
 681                 return 0;
 682         if ((xsinfo->mode^filter.xsinfo.mode)&filter.mode_mask)
 683                 return 0;
 684         if ((xsinfo->reqid^filter.xsinfo.reqid)&filter.reqid_mask)
 685                 return 0;
 686         if (filter.state_flags_mask)
 687                 if ((xsinfo->flags & filter.xsinfo.flags) == 0)
 688                         return 0;
 689
 690         return 1;
 691 }
 692
 693 int xfrm_state_print(const struct sockaddr_nl *who, struct nlmsghdr *n,
 694                      void *arg)
 695 {
 696         FILE *fp = (FILE*)arg;
 697         struct rtattr * tb[XFRMA_MAX+1];
 698         struct rtattr * rta;
 699         struct xfrm_usersa_info *xsinfo = NULL;
 700         struct xfrm_user_expire *xexp = NULL;
 701         struct xfrm_usersa_id   *xsid = NULL;
 702         int len = n->nlmsg_len;
 703
 704         if (n->nlmsg_type != XFRM_MSG_NEWSA &&
 705             n->nlmsg_type != XFRM_MSG_DELSA &&
 706             n->nlmsg_type != XFRM_MSG_UPDSA &&
 707             n->nlmsg_type != XFRM_MSG_EXPIRE) {
 708                 fprintf(stderr, "Not a state: %08x %08x %08x\n",
 709                         n->nlmsg_len, n->nlmsg_type, n->nlmsg_flags);
 710                 return 0;
 711         }
 712
 713         if (n->nlmsg_type == XFRM_MSG_DELSA) {
 714                 /* Dont blame me for this .. Herbert made me do it */
 715                 xsid = NLMSG_DATA(n);
 716                 len -= NLMSG_SPACE(sizeof(*xsid));
 717         } else if (n->nlmsg_type == XFRM_MSG_EXPIRE) {
 718                 xexp = NLMSG_DATA(n);
 719                 xsinfo = &xexp->state;
 720                 len -= NLMSG_SPACE(sizeof(*xexp));
 721         } else {
 722                 xexp = NULL;
 723                 xsinfo = NLMSG_DATA(n);
 724                 len -= NLMSG_SPACE(sizeof(*xsinfo));
 725         }
 726
 727         if (len < 0) {
 728                 fprintf(stderr, "BUG: wrong nlmsg len %d\n", len);
 729                 return -1;
 730         }
 731
 732         if (xsinfo && !xfrm_state_filter_match(xsinfo))
 733                 return 0;
 734
 735         if (n->nlmsg_type == XFRM_MSG_DELSA)
 736                 fprintf(fp, "Deleted ");
 737         else if (n->nlmsg_type == XFRM_MSG_UPDSA)
 738                 fprintf(fp, "Updated ");
 739         else if (n->nlmsg_type == XFRM_MSG_EXPIRE)
 740                 fprintf(fp, "Expired ");
 741
 742         if (n->nlmsg_type == XFRM_MSG_DELSA)
 743                 rta = XFRMSID_RTA(xsid);
 744         else if (n->nlmsg_type == XFRM_MSG_EXPIRE)
 745                 rta = XFRMEXP_RTA(xexp);
 746         else
 747                 rta = XFRMS_RTA(xsinfo);
 748
 749         parse_rtattr(tb, XFRMA_MAX, rta, len);
 750
 751         if (n->nlmsg_type == XFRM_MSG_DELSA) {
 752                 //xfrm_policy_id_print();
 753
 754                 if (!tb[XFRMA_SA]) {
 755                         fprintf(stderr, "Buggy XFRM_MSG_DELSA: no XFRMA_SA\n");
 756                         return -1;
 757                 }
 758                 if (RTA_PAYLOAD(tb[XFRMA_SA]) < sizeof(*xsinfo)) {
 759                         fprintf(stderr, "Buggy XFRM_MSG_DELPOLICY: too short XFRMA_POLICY len\n");
 760                         return -1;
 761                 }
 762                 xsinfo = RTA_DATA(tb[XFRMA_SA]);
 763         }
 764
 765         xfrm_state_info_print(xsinfo, tb, fp, NULL, NULL);
 766
 767         if (n->nlmsg_type == XFRM_MSG_EXPIRE) {
 768                 fprintf(fp, "\t");
 769                 fprintf(fp, "hard %u", xexp->hard);
 770                 fprintf(fp, "%s", _SL_);
 771         }
 772
 773         if (oneline)
 774                 fprintf(fp, "\n");
 775         fflush(fp);
 776
 777         return 0;
 778 }
 779
 780 static int xfrm_state_get_or_delete(int argc, char **argv, int delete)
 781 {
 782         struct rtnl_handle rth;
 783         struct {
 784                 struct nlmsghdr         n;
 785                 struct xfrm_usersa_id   xsid;
 786                 char                    buf[RTA_BUF_SIZE];
 787         } req;
 788         struct xfrm_id id;
 789         char *idp = NULL;
 790         struct xfrm_mark mark = {0, 0};
 791
 792         memset(&req, 0, sizeof(req));
 793
 794         req.n.nlmsg_len = NLMSG_LENGTH(sizeof(req.xsid));
 795         req.n.nlmsg_flags = NLM_F_REQUEST;
 796         req.n.nlmsg_type = delete ? XFRM_MSG_DELSA : XFRM_MSG_GETSA;
 797         req.xsid.family = preferred_family;
 798
 799         while (argc > 0) {
 800                 xfrm_address_t saddr;
 801
 802                 if (strcmp(*argv, "mark") == 0) {
 803                         xfrm_parse_mark(&mark, &argc, &argv);
 804                 } else {
 805                         if (idp)
 806                                 invarg("unknown", *argv);
 807                         idp = *argv;
 808
 809                         /* ID */
 810                         memset(&id, 0, sizeof(id));
 811                         memset(&saddr, 0, sizeof(saddr));
 812                         xfrm_id_parse(&saddr, &id, &req.xsid.family, 0,
 813                                       &argc, &argv);
 814
 815                         memcpy(&req.xsid.daddr, &id.daddr, sizeof(req.xsid.daddr));
 816                         req.xsid.spi = id.spi;
 817                         req.xsid.proto = id.proto;
 818
 819                         addattr_l(&req.n, sizeof(req.buf), XFRMA_SRCADDR,
 820                                   (void *)&saddr, sizeof(saddr));
 821                 }
 822
 823                 argc--; argv++;
 824         }
 825
 826         if (mark.m & mark.v) {
 827                 int r = addattr_l(&req.n, sizeof(req.buf), XFRMA_MARK,
 828                                   (void *)&mark, sizeof(mark));
 829                 if (r < 0) {
 830                         fprintf(stderr, "XFRMA_MARK failed\n");
 831                         exit(1);
 832                 }
 833         }
 834
 835         if (rtnl_open_byproto(&rth, 0, NETLINK_XFRM) < 0)
 836                 exit(1);
 837
 838         if (req.xsid.family == AF_UNSPEC)
 839                 req.xsid.family = AF_INET;
 840
 841         if (delete) {
 842                 if (rtnl_talk(&rth, &req.n, 0, 0, NULL, NULL, NULL) < 0)
 843                         exit(2);
 844         } else {
 845                 char buf[NLMSG_BUF_SIZE];
 846                 struct nlmsghdr *res_n = (struct nlmsghdr *)buf;
 847
 848                 memset(buf, 0, sizeof(buf));
 849
 850                 if (rtnl_talk(&rth, &req.n, 0, 0, res_n, NULL, NULL) < 0)
 851                         exit(2);
 852
 853                 if (xfrm_state_print(NULL, res_n, (void*)stdout) < 0) {
 854                         fprintf(stderr, "An error :-)\n");
 855                         exit(1);
 856                 }
 857         }
 858
 859         rtnl_close(&rth);
 860
 861         return 0;
 862 }
 863
 864 /*
 865  * With an existing state of nlmsg, make new nlmsg for deleting the state
 866  * and store it to buffer.
 867  */
 868 static int xfrm_state_keep(const struct sockaddr_nl *who,
 869                            struct nlmsghdr *n,
 870                            void *arg)
 871 {
 872         struct xfrm_buffer *xb = (struct xfrm_buffer *)arg;
 873         struct rtnl_handle *rth = xb->rth;
 874         struct xfrm_usersa_info *xsinfo = NLMSG_DATA(n);
 875         int len = n->nlmsg_len;
 876         struct nlmsghdr *new_n;
 877         struct xfrm_usersa_id *xsid;
 878
 879         if (n->nlmsg_type != XFRM_MSG_NEWSA) {
 880                 fprintf(stderr, "Not a state: %08x %08x %08x\n",
 881                         n->nlmsg_len, n->nlmsg_type, n->nlmsg_flags);
 882                 return 0;
 883         }
 884
 885         len -= NLMSG_LENGTH(sizeof(*xsinfo));
 886         if (len < 0) {
 887                 fprintf(stderr, "BUG: wrong nlmsg len %d\n", len);
 888                 return -1;
 889         }
 890
 891         if (!xfrm_state_filter_match(xsinfo))
 892                 return 0;
 893
 894         if (xb->offset > xb->size) {
 895                 fprintf(stderr, "State buffer overflow\n");
 896                 return -1;
 897         }
 898
 899         new_n = (struct nlmsghdr *)(xb->buf + xb->offset);
 900         new_n->nlmsg_len = NLMSG_LENGTH(sizeof(*xsid));
 901         new_n->nlmsg_flags = NLM_F_REQUEST;
 902         new_n->nlmsg_type = XFRM_MSG_DELSA;
 903         new_n->nlmsg_seq = ++rth->seq;
 904
 905         xsid = NLMSG_DATA(new_n);
 906         xsid->family = xsinfo->family;
 907         memcpy(&xsid->daddr, &xsinfo->id.daddr, sizeof(xsid->daddr));
 908         xsid->spi = xsinfo->id.spi;
 909         xsid->proto = xsinfo->id.proto;
 910
 911         addattr_l(new_n, xb->size, XFRMA_SRCADDR, &xsinfo->saddr,
 912                   sizeof(xsid->daddr));
 913
 914         xb->offset += new_n->nlmsg_len;
 915         xb->nlmsg_count ++;
 916
 917         return 0;
 918 }
 919
 920 static int xfrm_state_list_or_deleteall(int argc, char **argv, int deleteall)
 921 {
 922         char *idp = NULL;
 923         struct rtnl_handle rth;
 924
 925         if(argc > 0)
 926                 filter.use = 1;
 927         filter.xsinfo.family = preferred_family;
 928
 929         while (argc > 0) {
 930                 if (strcmp(*argv, "mode") == 0) {
 931                         NEXT_ARG();
 932                         xfrm_mode_parse(&filter.xsinfo.mode, &argc, &argv);
 933
 934                         filter.mode_mask = XFRM_FILTER_MASK_FULL;
 935
 936                 } else if (strcmp(*argv, "reqid") == 0) {
 937                         NEXT_ARG();
 938                         xfrm_reqid_parse(&filter.xsinfo.reqid, &argc, &argv);
 939
 940                         filter.reqid_mask = XFRM_FILTER_MASK_FULL;
 941
 942                 } else if (strcmp(*argv, "flag") == 0) {
 943                         NEXT_ARG();
 944                         xfrm_state_flag_parse(&filter.xsinfo.flags, &argc, &argv);
 945
 946                         filter.state_flags_mask = XFRM_FILTER_MASK_FULL;
 947
 948                 } else {
 949                         if (idp)
 950                                 invarg("unknown", *argv);
 951                         idp = *argv;
 952
 953                         /* ID */
 954                         xfrm_id_parse(&filter.xsinfo.saddr, &filter.xsinfo.id,
 955                                       &filter.xsinfo.family, 1, &argc, &argv);
 956                         if (preferred_family == AF_UNSPEC)
 957                                 preferred_family = filter.xsinfo.family;
 958                 }
 959                 argc--; argv++;
 960         }
 961
 962         if (rtnl_open_byproto(&rth, 0, NETLINK_XFRM) < 0)
 963                 exit(1);
 964
 965         if (deleteall) {
 966                 struct xfrm_buffer xb;
 967                 char buf[NLMSG_DELETEALL_BUF_SIZE];
 968                 int i;
 969
 970                 xb.buf = buf;
 971                 xb.size = sizeof(buf);
 972                 xb.rth = &rth;
 973
 974                 for (i = 0; ; i++) {
 975                         xb.offset = 0;
 976                         xb.nlmsg_count = 0;
 977
 978                         if (show_stats > 1)
 979                                 fprintf(stderr, "Delete-all round = %d\n", i);
 980
 981                         if (rtnl_wilddump_request(&rth, preferred_family, XFRM_MSG_GETSA) < 0) {
 982                                 perror("Cannot send dump request");
 983                                 exit(1);
 984                         }
 985
 986                         if (rtnl_dump_filter(&rth, xfrm_state_keep, &xb, NULL, NULL) < 0) {
 987                                 fprintf(stderr, "Delete-all terminated\n");
 988                                 exit(1);
 989                         }
 990                         if (xb.nlmsg_count == 0) {
 991                                 if (show_stats > 1)
 992                                         fprintf(stderr, "Delete-all completed\n");
 993                                 break;
 994                         }
 995
 996                         if (rtnl_send_check(&rth, xb.buf, xb.offset) < 0) {
 997                                 perror("Failed to send delete-all request\n");
 998                                 exit(1);
 999                         }
1000                         if (show_stats > 1)
1001                                 fprintf(stderr, "Delete-all nlmsg count = %d\n", xb.nlmsg_count);
1002
1003                         xb.offset = 0;
1004                         xb.nlmsg_count = 0;
1005                 }
1006
1007         } else {
1008                 if (rtnl_wilddump_request(&rth, preferred_family, XFRM_MSG_GETSA) < 0) {
1009                         perror("Cannot send dump request");
1010                         exit(1);
1011                 }
1012
1013                 if (rtnl_dump_filter(&rth, xfrm_state_print, stdout, NULL, NULL) < 0) {
1014                         fprintf(stderr, "Dump terminated\n");
1015                         exit(1);
1016                 }
1017         }
1018
1019         rtnl_close(&rth);
1020
1021         exit(0);
1022 }
1023
1024 int print_sadinfo(struct nlmsghdr *n, void *arg)
1025 {
1026         FILE *fp = (FILE*)arg;
1027         __u32 *f = NLMSG_DATA(n);
1028         struct rtattr *tb[XFRMA_SAD_MAX+1];
1029         struct rtattr *rta;
1030         __u32 *cnt;
1031
1032         int len = n->nlmsg_len;
1033
1034         len -= NLMSG_LENGTH(sizeof(__u32));
1035         if (len < 0) {
1036                 fprintf(stderr, "SADinfo: Wrong len %d\n", len);
1037                 return -1;
1038         }
1039
1040         rta = XFRMSAPD_RTA(f);
1041         parse_rtattr(tb, XFRMA_SAD_MAX, rta, len);
1042
1043         if (tb[XFRMA_SAD_CNT]) {
1044                 fprintf(fp,"\t SAD");
1045                 cnt = (__u32 *)RTA_DATA(tb[XFRMA_SAD_CNT]);
1046                 fprintf(fp," count %d", *cnt);
1047         } else {
1048                 fprintf(fp,"BAD SAD info returned\n");
1049                 return -1;
1050         }
1051
1052         if (show_stats) {
1053                 if (tb[XFRMA_SAD_HINFO]) {
1054                         struct xfrmu_sadhinfo *si;
1055
1056                         if (RTA_PAYLOAD(tb[XFRMA_SAD_HINFO]) < sizeof(*si)) {
1057                                 fprintf(fp,"BAD SAD length returned\n");
1058                                 return -1;
1059                         }
1060
1061                         si = RTA_DATA(tb[XFRMA_SAD_HINFO]);
1062                         fprintf(fp," (buckets ");
1063                         fprintf(fp,"count %d", si->sadhcnt);
1064                         fprintf(fp," Max %d", si->sadhmcnt);
1065                         fprintf(fp,")");
1066                 }
1067         }
1068         fprintf(fp,"\n");
1069
1070         return 0;
1071 }
1072
1073 static int xfrm_sad_getinfo(int argc, char **argv)
1074 {
1075         struct rtnl_handle rth;
1076         struct {
1077                 struct nlmsghdr                 n;
1078                 __u32                           flags;
1079                 char                            ans[64];
1080         } req;
1081
1082         memset(&req, 0, sizeof(req));
1083         req.n.nlmsg_len = NLMSG_LENGTH(sizeof(req.flags));
1084         req.n.nlmsg_flags = NLM_F_REQUEST;
1085         req.n.nlmsg_type = XFRM_MSG_GETSADINFO;
1086         req.flags = 0XFFFFFFFF;
1087
1088         if (rtnl_open_byproto(&rth, 0, NETLINK_XFRM) < 0)
1089                 exit(1);
1090
1091         if (rtnl_talk(&rth, &req.n, 0, 0, &req.n, NULL, NULL) < 0)
1092                 exit(2);
1093
1094         print_sadinfo(&req.n, (void*)stdout);
1095
1096         rtnl_close(&rth);
1097
1098         return 0;
1099 }
1100
1101 static int xfrm_state_flush(int argc, char **argv)
1102 {
1103         struct rtnl_handle rth;
1104         struct {
1105                 struct nlmsghdr                 n;
1106                 struct xfrm_usersa_flush        xsf;
1107         } req;
1108         char *protop = NULL;
1109
1110         memset(&req, 0, sizeof(req));
1111
1112         req.n.nlmsg_len = NLMSG_LENGTH(sizeof(req.xsf));
1113         req.n.nlmsg_flags = NLM_F_REQUEST;
1114         req.n.nlmsg_type = XFRM_MSG_FLUSHSA;
1115         req.xsf.proto = 0;
1116
1117         while (argc > 0) {
1118                 if (strcmp(*argv, "proto") == 0) {
1119                         int ret;
1120
1121                         if (protop)
1122                                 duparg("proto", *argv);
1123                         protop = *argv;
1124
1125                         NEXT_ARG();
1126
1127                         ret = xfrm_xfrmproto_getbyname(*argv);
1128                         if (ret < 0)
1129                                 invarg("\"XFRM_PROTO\" is invalid", *argv);
1130
1131                         req.xsf.proto = (__u8)ret;
1132                 } else
1133                         invarg("unknown", *argv);
1134
1135                 argc--; argv++;
1136         }
1137
1138         if (rtnl_open_byproto(&rth, 0, NETLINK_XFRM) < 0)
1139                 exit(1);
1140
1141         if (show_stats > 1)
1142                 fprintf(stderr, "Flush state proto=%s\n",
1143                         strxf_xfrmproto(req.xsf.proto));
1144
1145         if (rtnl_talk(&rth, &req.n, 0, 0, NULL, NULL, NULL) < 0)
1146                 exit(2);
1147
1148         rtnl_close(&rth);
1149
1150         return 0;
1151 }
1152
1153 int do_xfrm_state(int argc, char **argv)
1154 {
1155         if (argc < 1)
1156                 return xfrm_state_list_or_deleteall(0, NULL, 0);
1157
1158         if (matches(*argv, "add") == 0)
1159                 return xfrm_state_modify(XFRM_MSG_NEWSA, 0,
1160                                          argc-1, argv+1);
1161         if (matches(*argv, "update") == 0)
1162                 return xfrm_state_modify(XFRM_MSG_UPDSA, 0,
1163                                          argc-1, argv+1);
1164         if (matches(*argv, "allocspi") == 0)
1165                 return xfrm_state_allocspi(argc-1, argv+1);
1166         if (matches(*argv, "delete") == 0)
1167                 return xfrm_state_get_or_delete(argc-1, argv+1, 1);
1168         if (matches(*argv, "deleteall") == 0 || matches(*argv, "delall") == 0)
1169                 return xfrm_state_list_or_deleteall(argc-1, argv+1, 1);
1170         if (matches(*argv, "list") == 0 || matches(*argv, "show") == 0
1171             || matches(*argv, "lst") == 0)
1172                 return xfrm_state_list_or_deleteall(argc-1, argv+1, 0);
1173         if (matches(*argv, "get") == 0)
1174                 return xfrm_state_get_or_delete(argc-1, argv+1, 0);
1175         if (matches(*argv, "flush") == 0)
1176                 return xfrm_state_flush(argc-1, argv+1);
1177         if (matches(*argv, "count") == 0) {
1178                 return xfrm_sad_getinfo(argc, argv);
1179         }
1180         if (matches(*argv, "help") == 0)
1181                 usage();
1182         fprintf(stderr, "Command \"%s\" is unknown, try \"ip xfrm state help\".\n", *argv);
1183         exit(-1);
1184 }