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 #define CTX_BUF_SIZE 256
  54
  55 static void usage(void) __attribute__((noreturn));
  56
  57 static void usage(void)
  58 {
  59         fprintf(stderr, "Usage: ip xfrm state { add | update } ID [ XFRM_OPT ] [ ctx SEC_CTX ] [ mode MODE ]\n");
  60         fprintf(stderr, "        [ reqid REQID ] [ seq SEQ ] [ replay-window SIZE ] [ flag FLAG-LIST ]\n");
  61         fprintf(stderr, "        [ encap ENCAP ] [ sel SELECTOR ] [ replay-seq SEQ ]\n");
  62         fprintf(stderr, "        [ replay-oseq SEQ ] [ LIMIT-LIST ]\n");
  63         fprintf(stderr, "Usage: ip xfrm state allocspi ID [ mode MODE ] [ reqid REQID ] [ seq SEQ ]\n");
  64         fprintf(stderr, "        [ min SPI max SPI ]\n");
  65         fprintf(stderr, "Usage: ip xfrm state { delete | get } ID\n");
  66         fprintf(stderr, "Usage: ip xfrm state { deleteall | list } [ ID ] [ mode MODE ] [ reqid REQID ]\n");
  67         fprintf(stderr, "        [ flag FLAG-LIST ]\n");
  68         fprintf(stderr, "Usage: ip xfrm state flush [ proto XFRM_PROTO ]\n");
  69         fprintf(stderr, "Usage: ip xfrm state count \n");
  70
  71         fprintf(stderr, "ID := [ src ADDR ] [ dst ADDR ] [ proto XFRM_PROTO ] [ spi SPI ] [mark MARK [mask MASK]]\n");
  72         //fprintf(stderr, "XFRM_PROTO := [ esp | ah | comp ]\n");
  73         fprintf(stderr, "XFRM_PROTO := [ ");
  74         fprintf(stderr, "%s | ", strxf_xfrmproto(IPPROTO_ESP));
  75         fprintf(stderr, "%s | ", strxf_xfrmproto(IPPROTO_AH));
  76         fprintf(stderr, "%s | ", strxf_xfrmproto(IPPROTO_COMP));
  77         fprintf(stderr, "%s | ", strxf_xfrmproto(IPPROTO_ROUTING));
  78         fprintf(stderr, "%s ", strxf_xfrmproto(IPPROTO_DSTOPTS));
  79         fprintf(stderr, "]\n");
  80
  81         //fprintf(stderr, "SPI - security parameter index(default=0)\n");
  82
  83         fprintf(stderr, "MODE := [ transport | tunnel | ro | beet ](default=transport)\n");
  84         //fprintf(stderr, "REQID - number(default=0)\n");
  85
  86         fprintf(stderr, "FLAG-LIST := [ FLAG-LIST ] FLAG\n");
  87         fprintf(stderr, "FLAG := [ noecn | decap-dscp | nopmtudisc | wildrecv | icmp | af-unspec | align4 ]\n");
  88
  89         fprintf(stderr, "ENCAP := ENCAP-TYPE SPORT DPORT OADDR\n");
  90         fprintf(stderr, "ENCAP-TYPE := espinudp | espinudp-nonike\n");
  91
  92         fprintf(stderr, "ALGO-LIST := [ ALGO-LIST ] | [ ALGO ]\n");
  93         fprintf(stderr, "ALGO := ALGO_TYPE ALGO_NAME ALGO_KEY "
  94                         "[ ALGO_ICV_LEN | ALGO_TRUNC_LEN ]\n");
  95         fprintf(stderr, "ALGO_TYPE := [ ");
  96         fprintf(stderr, "%s | ", strxf_algotype(XFRMA_ALG_AEAD));
  97         fprintf(stderr, "%s | ", strxf_algotype(XFRMA_ALG_CRYPT));
  98         fprintf(stderr, "%s | ", strxf_algotype(XFRMA_ALG_AUTH));
  99         fprintf(stderr, "%s | ", strxf_algotype(XFRMA_ALG_AUTH_TRUNC));
 100         fprintf(stderr, "%s ", strxf_algotype(XFRMA_ALG_COMP));
 101         fprintf(stderr, "]\n");
 102
 103         //fprintf(stderr, "ALGO_NAME - algorithm name\n");
 104         //fprintf(stderr, "ALGO_KEY - algorithm key\n");
 105
 106         fprintf(stderr, "SELECTOR := src ADDR[/PLEN] dst ADDR[/PLEN] [ UPSPEC ] [ dev DEV ]\n");
 107
 108         fprintf(stderr, "UPSPEC := proto PROTO [ [ sport PORT ] [ dport PORT ] |\n");
 109         fprintf(stderr, "                        [ type NUMBER ] [ code NUMBER ] ]\n");
 110
 111
 112         //fprintf(stderr, "DEV - device name(default=none)\n");
 113         fprintf(stderr, "LIMIT-LIST := [ LIMIT-LIST ] | [ limit LIMIT ]\n");
 114         fprintf(stderr, "LIMIT := [ [time-soft|time-hard|time-use-soft|time-use-hard] SECONDS ] |\n");
 115         fprintf(stderr, "         [ [byte-soft|byte-hard] SIZE ] | [ [packet-soft|packet-hard] COUNT ]\n");
 116         exit(-1);
 117 }
 118
 119 static int xfrm_algo_parse(struct xfrm_algo *alg, enum xfrm_attr_type_t type,
 120                            char *name, char *key, char *buf, int max)
 121 {
 122         int len;
 123         int slen = strlen(key);
 124
 125 #if 0
 126         /* XXX: verifying both name and key is required! */
 127         fprintf(stderr, "warning: ALGONAME/ALGOKEY will send to kernel promiscuously!(verifying them isn't implemented yet)\n");
 128 #endif
 129
 130         strncpy(alg->alg_name, name, sizeof(alg->alg_name));
 131
 132         if (slen > 2 && strncmp(key, "0x", 2) == 0) {
 133                 /* split two chars "0x" from the top */
 134                 char *p = key + 2;
 135                 int plen = slen - 2;
 136                 int i;
 137                 int j;
 138
 139                 /* Converting hexadecimal numbered string into real key;
 140                  * Convert each two chars into one char(value). If number
 141                  * of the length is odd, add zero on the top for rounding.
 142                  */
 143
 144                 /* calculate length of the converted values(real key) */
 145                 len = (plen + 1) / 2;
 146                 if (len > max)
 147                         invarg("\"ALGOKEY\" makes buffer overflow\n", key);
 148
 149                 for (i = - (plen % 2), j = 0; j < len; i += 2, j++) {
 150                         char vbuf[3];
 151                         __u8 val;
 152
 153                         vbuf[0] = i >= 0 ? p[i] : '0';
 154                         vbuf[1] = p[i + 1];
 155                         vbuf[2] = '\0';
 156
 157                         if (get_u8(&val, vbuf, 16))
 158                                 invarg("\"ALGOKEY\" is invalid", key);
 159
 160                         buf[j] = val;
 161                 }
 162         } else {
 163                 len = slen;
 164                 if (len > 0) {
 165                         if (len > max)
 166                                 invarg("\"ALGOKEY\" makes buffer overflow\n", key);
 167
 168                         strncpy(buf, key, len);
 169                 }
 170         }
 171
 172         alg->alg_key_len = len * 8;
 173
 174         return 0;
 175 }
 176
 177 static int xfrm_seq_parse(__u32 *seq, int *argcp, char ***argvp)
 178 {
 179         int argc = *argcp;
 180         char **argv = *argvp;
 181
 182         if (get_u32(seq, *argv, 0))
 183                 invarg("\"SEQ\" is invalid", *argv);
 184
 185         *seq = htonl(*seq);
 186
 187         *argcp = argc;
 188         *argvp = argv;
 189
 190         return 0;
 191 }
 192
 193 static int xfrm_state_flag_parse(__u8 *flags, int *argcp, char ***argvp)
 194 {
 195         int argc = *argcp;
 196         char **argv = *argvp;
 197         int len = strlen(*argv);
 198
 199         if (len > 2 && strncmp(*argv, "0x", 2) == 0) {
 200                 __u8 val = 0;
 201
 202                 if (get_u8(&val, *argv, 16))
 203                         invarg("\"FLAG\" is invalid", *argv);
 204                 *flags = val;
 205         } else {
 206                 while (1) {
 207                         if (strcmp(*argv, "noecn") == 0)
 208                                 *flags |= XFRM_STATE_NOECN;
 209                         else if (strcmp(*argv, "decap-dscp") == 0)
 210                                 *flags |= XFRM_STATE_DECAP_DSCP;
 211                         else if (strcmp(*argv, "nopmtudisc") == 0)
 212                                 *flags |= XFRM_STATE_NOPMTUDISC;
 213                         else if (strcmp(*argv, "wildrecv") == 0)
 214                                 *flags |= XFRM_STATE_WILDRECV;
 215                         else if (strcmp(*argv, "icmp") == 0)
 216                                 *flags |= XFRM_STATE_ICMP;
 217                         else if (strcmp(*argv, "af-unspec") == 0)
 218                                 *flags |= XFRM_STATE_AF_UNSPEC;
 219                         else if (strcmp(*argv, "align4") == 0)
 220                                 *flags |= XFRM_STATE_ALIGN4;
 221                         else {
 222                                 PREV_ARG(); /* back track */
 223                                 break;
 224                         }
 225
 226                         if (!NEXT_ARG_OK())
 227                                 break;
 228                         NEXT_ARG();
 229                 }
 230         }
 231
 232         *argcp = argc;
 233         *argvp = argv;
 234
 235         return 0;
 236 }
 237
 238 static int xfrm_state_modify(int cmd, unsigned flags, int argc, char **argv)
 239 {
 240         struct rtnl_handle rth;
 241         struct {
 242                 struct nlmsghdr         n;
 243                 struct xfrm_usersa_info xsinfo;
 244                 char                    buf[RTA_BUF_SIZE];
 245         } req;
 246         struct xfrm_replay_state replay;
 247         char *idp = NULL;
 248         char *aeadop = NULL;
 249         char *ealgop = NULL;
 250         char *aalgop = NULL;
 251         char *calgop = NULL;
 252         char *coap = NULL;
 253         char *sctxp = NULL;
 254         struct xfrm_mark mark = {0, 0};
 255         struct {
 256                 struct xfrm_user_sec_ctx sctx;
 257                 char    str[CTX_BUF_SIZE];
 258         } ctx;
 259
 260         memset(&req, 0, sizeof(req));
 261         memset(&replay, 0, sizeof(replay));
 262         memset(&ctx, 0, sizeof(ctx));
 263
 264         req.n.nlmsg_len = NLMSG_LENGTH(sizeof(req.xsinfo));
 265         req.n.nlmsg_flags = NLM_F_REQUEST|flags;
 266         req.n.nlmsg_type = cmd;
 267         req.xsinfo.family = preferred_family;
 268
 269         req.xsinfo.lft.soft_byte_limit = XFRM_INF;
 270         req.xsinfo.lft.hard_byte_limit = XFRM_INF;
 271         req.xsinfo.lft.soft_packet_limit = XFRM_INF;
 272         req.xsinfo.lft.hard_packet_limit = XFRM_INF;
 273
 274         while (argc > 0) {
 275                 if (strcmp(*argv, "mode") == 0) {
 276                         NEXT_ARG();
 277                         xfrm_mode_parse(&req.xsinfo.mode, &argc, &argv);
 278                 } else if (strcmp(*argv, "mark") == 0) {
 279                         xfrm_parse_mark(&mark, &argc, &argv);
 280                 } else if (strcmp(*argv, "reqid") == 0) {
 281                         NEXT_ARG();
 282                         xfrm_reqid_parse(&req.xsinfo.reqid, &argc, &argv);
 283                 } else if (strcmp(*argv, "seq") == 0) {
 284                         NEXT_ARG();
 285                         xfrm_seq_parse(&req.xsinfo.seq, &argc, &argv);
 286                 } else if (strcmp(*argv, "replay-window") == 0) {
 287                         NEXT_ARG();
 288                         if (get_u8(&req.xsinfo.replay_window, *argv, 0))
 289                                 invarg("\"replay-window\" value is invalid", *argv);
 290                 } else if (strcmp(*argv, "replay-seq") == 0) {
 291                         NEXT_ARG();
 292                         if (get_u32(&replay.seq, *argv, 0))
 293                                 invarg("\"replay-seq\" value is invalid", *argv);
 294                 } else if (strcmp(*argv, "replay-oseq") == 0) {
 295                         NEXT_ARG();
 296                         if (get_u32(&replay.oseq, *argv, 0))
 297                                 invarg("\"replay-oseq\" value is invalid", *argv);
 298                 } else if (strcmp(*argv, "flag") == 0) {
 299                         NEXT_ARG();
 300                         xfrm_state_flag_parse(&req.xsinfo.flags, &argc, &argv);
 301                 } else if (strcmp(*argv, "sel") == 0) {
 302                         NEXT_ARG();
 303                         xfrm_selector_parse(&req.xsinfo.sel, &argc, &argv);
 304                 } else if (strcmp(*argv, "limit") == 0) {
 305                         NEXT_ARG();
 306                         xfrm_lifetime_cfg_parse(&req.xsinfo.lft, &argc, &argv);
 307                 } else if (strcmp(*argv, "encap") == 0) {
 308                         struct xfrm_encap_tmpl encap;
 309                         inet_prefix oa;
 310                         NEXT_ARG();
 311                         xfrm_encap_type_parse(&encap.encap_type, &argc, &argv);
 312                         NEXT_ARG();
 313                         if (get_u16(&encap.encap_sport, *argv, 0))
 314                                 invarg("\"encap\" sport value is invalid", *argv);
 315                         encap.encap_sport = htons(encap.encap_sport);
 316                         NEXT_ARG();
 317                         if (get_u16(&encap.encap_dport, *argv, 0))
 318                                 invarg("\"encap\" dport value is invalid", *argv);
 319                         encap.encap_dport = htons(encap.encap_dport);
 320                         NEXT_ARG();
 321                         get_addr(&oa, *argv, AF_UNSPEC);
 322                         memcpy(&encap.encap_oa, &oa.data, sizeof(encap.encap_oa));
 323                         addattr_l(&req.n, sizeof(req.buf), XFRMA_ENCAP,
 324                                   (void *)&encap, sizeof(encap));
 325                 } else if (strcmp(*argv, "coa") == 0) {
 326                         inet_prefix coa;
 327                         xfrm_address_t xcoa;
 328
 329                         if (coap)
 330                                 duparg("coa", *argv);
 331                         coap = *argv;
 332
 333                         NEXT_ARG();
 334
 335                         get_prefix(&coa, *argv, preferred_family);
 336                         if (coa.family == AF_UNSPEC)
 337                                 invarg("\"coa\" address family is AF_UNSPEC", *argv);
 338                         if (coa.bytelen > sizeof(xcoa))
 339                                 invarg("\"coa\" address length is too large", *argv);
 340
 341                         memset(&xcoa, 0, sizeof(xcoa));
 342                         memcpy(&xcoa, &coa.data, coa.bytelen);
 343
 344                         addattr_l(&req.n, sizeof(req.buf), XFRMA_COADDR,
 345                                   (void *)&xcoa, sizeof(xcoa));
 346                 } else if (strcmp(*argv, "ctx") == 0) {
 347                         char *context;
 348
 349                         if (sctxp)
 350                                 duparg("ctx", *argv);
 351                         sctxp = *argv;
 352
 353                         NEXT_ARG();
 354                         context = *argv;
 355
 356                         xfrm_sctx_parse((char *)&ctx.str, context, &ctx.sctx);
 357                         addattr_l(&req.n, sizeof(req.buf), XFRMA_SEC_CTX,
 358                                   (void *)&ctx, ctx.sctx.len);
 359                 } else {
 360                         /* try to assume ALGO */
 361                         int type = xfrm_algotype_getbyname(*argv);
 362                         switch (type) {
 363                         case XFRMA_ALG_AEAD:
 364                         case XFRMA_ALG_CRYPT:
 365                         case XFRMA_ALG_AUTH:
 366                         case XFRMA_ALG_AUTH_TRUNC:
 367                         case XFRMA_ALG_COMP:
 368                         {
 369                                 /* ALGO */
 370                                 struct {
 371                                         union {
 372                                                 struct xfrm_algo alg;
 373                                                 struct xfrm_algo_aead aead;
 374                                                 struct xfrm_algo_auth auth;
 375                                         } u;
 376                                         char buf[XFRM_ALGO_KEY_BUF_SIZE];
 377                                 } alg = {};
 378                                 int len;
 379                                 __u32 icvlen, trunclen;
 380                                 char *name;
 381                                 char *key;
 382                                 char *buf;
 383
 384                                 switch (type) {
 385                                 case XFRMA_ALG_AEAD:
 386                                         if (aeadop)
 387                                                 duparg("ALGOTYPE", *argv);
 388                                         aeadop = *argv;
 389                                         break;
 390                                 case XFRMA_ALG_CRYPT:
 391                                         if (ealgop)
 392                                                 duparg("ALGOTYPE", *argv);
 393                                         ealgop = *argv;
 394                                         break;
 395                                 case XFRMA_ALG_AUTH:
 396                                 case XFRMA_ALG_AUTH_TRUNC:
 397                                         if (aalgop)
 398                                                 duparg("ALGOTYPE", *argv);
 399                                         aalgop = *argv;
 400                                         break;
 401                                 case XFRMA_ALG_COMP:
 402                                         if (calgop)
 403                                                 duparg("ALGOTYPE", *argv);
 404                                         calgop = *argv;
 405                                         break;
 406                                 default:
 407                                         /* not reached */
 408                                         invarg("\"ALGOTYPE\" is invalid\n", *argv);
 409                                 }
 410
 411                                 if (!NEXT_ARG_OK())
 412                                         missarg("ALGONAME");
 413                                 NEXT_ARG();
 414                                 name = *argv;
 415
 416                                 if (!NEXT_ARG_OK())
 417                                         missarg("ALGOKEY");
 418                                 NEXT_ARG();
 419                                 key = *argv;
 420
 421                                 buf = alg.u.alg.alg_key;
 422                                 len = sizeof(alg.u.alg);
 423
 424                                 switch (type) {
 425                                 case XFRMA_ALG_AEAD:
 426                                         if (!NEXT_ARG_OK())
 427                                                 missarg("ALGOICVLEN");
 428                                         NEXT_ARG();
 429                                         if (get_u32(&icvlen, *argv, 0))
 430                                                 invarg("\"aead\" ICV length is invalid",
 431                                                        *argv);
 432                                         alg.u.aead.alg_icv_len = icvlen;
 433
 434                                         buf = alg.u.aead.alg_key;
 435                                         len = sizeof(alg.u.aead);
 436                                         break;
 437                                 case XFRMA_ALG_AUTH_TRUNC:
 438                                         if (!NEXT_ARG_OK())
 439                                                 missarg("ALGOTRUNCLEN");
 440                                         NEXT_ARG();
 441                                         if (get_u32(&trunclen, *argv, 0))
 442                                                 invarg("\"auth\" trunc length is invalid",
 443                                                        *argv);
 444                                         alg.u.auth.alg_trunc_len = trunclen;
 445
 446                                         buf = alg.u.auth.alg_key;
 447                                         len = sizeof(alg.u.auth);
 448                                         break;
 449                                 }
 450
 451                                 xfrm_algo_parse((void *)&alg, type, name, key,
 452                                                 buf, sizeof(alg.buf));
 453                                 len += alg.u.alg.alg_key_len;
 454
 455                                 addattr_l(&req.n, sizeof(req.buf), type,
 456                                           (void *)&alg, len);
 457                                 break;
 458                         }
 459                         default:
 460                                 /* try to assume ID */
 461                                 if (idp)
 462                                         invarg("unknown", *argv);
 463                                 idp = *argv;
 464
 465                                 /* ID */
 466                                 xfrm_id_parse(&req.xsinfo.saddr, &req.xsinfo.id,
 467                                               &req.xsinfo.family, 0, &argc, &argv);
 468                                 if (preferred_family == AF_UNSPEC)
 469                                         preferred_family = req.xsinfo.family;
 470                         }
 471                 }
 472                 argc--; argv++;
 473         }
 474
 475         if (replay.seq || replay.oseq)
 476                 addattr_l(&req.n, sizeof(req.buf), XFRMA_REPLAY_VAL,
 477                           (void *)&replay, sizeof(replay));
 478
 479         if (!idp) {
 480                 fprintf(stderr, "Not enough information: \"ID\" is required\n");
 481                 exit(1);
 482         }
 483
 484         if (mark.m & mark.v) {
 485                 int r = addattr_l(&req.n, sizeof(req.buf), XFRMA_MARK,
 486                                   (void *)&mark, sizeof(mark));
 487                 if (r < 0) {
 488                         fprintf(stderr, "XFRMA_MARK failed\n");
 489                         exit(1);
 490                 }
 491         }
 492
 493         switch (req.xsinfo.mode) {
 494         case XFRM_MODE_TRANSPORT:
 495         case XFRM_MODE_TUNNEL:
 496                 if (!xfrm_xfrmproto_is_ipsec(req.xsinfo.id.proto)) {
 497                         fprintf(stderr, "\"mode\" is invalid with proto=%s\n",
 498                                 strxf_xfrmproto(req.xsinfo.id.proto));
 499                         exit(1);
 500                 }
 501                 break;
 502         case XFRM_MODE_ROUTEOPTIMIZATION:
 503         case XFRM_MODE_IN_TRIGGER:
 504                 if (!xfrm_xfrmproto_is_ro(req.xsinfo.id.proto)) {
 505                         fprintf(stderr, "\"mode\" is invalid with proto=%s\n",
 506                                 strxf_xfrmproto(req.xsinfo.id.proto));
 507                         exit(1);
 508                 }
 509                 if (req.xsinfo.id.spi != 0) {
 510                         fprintf(stderr, "\"spi\" must be 0 with proto=%s\n",
 511                                 strxf_xfrmproto(req.xsinfo.id.proto));
 512                         exit(1);
 513                 }
 514                 break;
 515         default:
 516                 break;
 517         }
 518
 519         if (aeadop || ealgop || aalgop || calgop) {
 520                 if (!xfrm_xfrmproto_is_ipsec(req.xsinfo.id.proto)) {
 521                         fprintf(stderr, "\"ALGO\" is invalid with proto=%s\n",
 522                                 strxf_xfrmproto(req.xsinfo.id.proto));
 523                         exit(1);
 524                 }
 525         } else {
 526                 if (xfrm_xfrmproto_is_ipsec(req.xsinfo.id.proto)) {
 527                         fprintf(stderr, "\"ALGO\" is required with proto=%s\n",
 528                                 strxf_xfrmproto(req.xsinfo.id.proto));
 529                         exit (1);
 530                 }
 531         }
 532
 533         if (coap) {
 534                 if (!xfrm_xfrmproto_is_ro(req.xsinfo.id.proto)) {
 535                         fprintf(stderr, "\"coa\" is invalid with proto=%s\n",
 536                                 strxf_xfrmproto(req.xsinfo.id.proto));
 537                         exit(1);
 538                 }
 539         } else {
 540                 if (xfrm_xfrmproto_is_ro(req.xsinfo.id.proto)) {
 541                         fprintf(stderr, "\"coa\" is required with proto=%s\n",
 542                                 strxf_xfrmproto(req.xsinfo.id.proto));
 543                         exit (1);
 544                 }
 545         }
 546
 547         if (rtnl_open_byproto(&rth, 0, NETLINK_XFRM) < 0)
 548                 exit(1);
 549
 550         if (req.xsinfo.family == AF_UNSPEC)
 551                 req.xsinfo.family = AF_INET;
 552
 553         if (rtnl_talk(&rth, &req.n, 0, 0, NULL, NULL, NULL) < 0)
 554                 exit(2);
 555
 556         rtnl_close(&rth);
 557
 558         return 0;
 559 }
 560
 561 static int xfrm_state_allocspi(int argc, char **argv)
 562 {
 563         struct rtnl_handle rth;
 564         struct {
 565                 struct nlmsghdr         n;
 566                 struct xfrm_userspi_info xspi;
 567                 char                    buf[RTA_BUF_SIZE];
 568         } req;
 569         char *idp = NULL;
 570         char *minp = NULL;
 571         char *maxp = NULL;
 572         struct xfrm_mark mark = {0, 0};
 573         char res_buf[NLMSG_BUF_SIZE];
 574         struct nlmsghdr *res_n = (struct nlmsghdr *)res_buf;
 575
 576         memset(res_buf, 0, sizeof(res_buf));
 577
 578         memset(&req, 0, sizeof(req));
 579
 580         req.n.nlmsg_len = NLMSG_LENGTH(sizeof(req.xspi));
 581         req.n.nlmsg_flags = NLM_F_REQUEST;
 582         req.n.nlmsg_type = XFRM_MSG_ALLOCSPI;
 583         req.xspi.info.family = preferred_family;
 584
 585 #if 0
 586         req.xsinfo.lft.soft_byte_limit = XFRM_INF;
 587         req.xsinfo.lft.hard_byte_limit = XFRM_INF;
 588         req.xsinfo.lft.soft_packet_limit = XFRM_INF;
 589         req.xsinfo.lft.hard_packet_limit = XFRM_INF;
 590 #endif
 591
 592         while (argc > 0) {
 593                 if (strcmp(*argv, "mode") == 0) {
 594                         NEXT_ARG();
 595                         xfrm_mode_parse(&req.xspi.info.mode, &argc, &argv);
 596                 } else if (strcmp(*argv, "mark") == 0) {
 597                         xfrm_parse_mark(&mark, &argc, &argv);
 598                 } else if (strcmp(*argv, "reqid") == 0) {
 599                         NEXT_ARG();
 600                         xfrm_reqid_parse(&req.xspi.info.reqid, &argc, &argv);
 601                 } else if (strcmp(*argv, "seq") == 0) {
 602                         NEXT_ARG();
 603                         xfrm_seq_parse(&req.xspi.info.seq, &argc, &argv);
 604                 } else if (strcmp(*argv, "min") == 0) {
 605                         if (minp)
 606                                 duparg("min", *argv);
 607                         minp = *argv;
 608
 609                         NEXT_ARG();
 610
 611                         if (get_u32(&req.xspi.min, *argv, 0))
 612                                 invarg("\"min\" value is invalid", *argv);
 613                 } else if (strcmp(*argv, "max") == 0) {
 614                         if (maxp)
 615                                 duparg("max", *argv);
 616                         maxp = *argv;
 617
 618                         NEXT_ARG();
 619
 620                         if (get_u32(&req.xspi.max, *argv, 0))
 621                                 invarg("\"max\" value is invalid", *argv);
 622                 } else {
 623                         /* try to assume ID */
 624                         if (idp)
 625                                 invarg("unknown", *argv);
 626                         idp = *argv;
 627
 628                         /* ID */
 629                         xfrm_id_parse(&req.xspi.info.saddr, &req.xspi.info.id,
 630                                       &req.xspi.info.family, 0, &argc, &argv);
 631                         if (req.xspi.info.id.spi) {
 632                                 fprintf(stderr, "\"SPI\" must be zero\n");
 633                                 exit(1);
 634                         }
 635                         if (preferred_family == AF_UNSPEC)
 636                                 preferred_family = req.xspi.info.family;
 637                 }
 638                 argc--; argv++;
 639         }
 640
 641         if (!idp) {
 642                 fprintf(stderr, "Not enough information: \"ID\" is required\n");
 643                 exit(1);
 644         }
 645
 646         if (minp) {
 647                 if (!maxp) {
 648                         fprintf(stderr, "\"max\" is missing\n");
 649                         exit(1);
 650                 }
 651                 if (req.xspi.min > req.xspi.max) {
 652                         fprintf(stderr, "\"min\" valie is larger than \"max\" one\n");
 653                         exit(1);
 654                 }
 655         } else {
 656                 if (maxp) {
 657                         fprintf(stderr, "\"min\" is missing\n");
 658                         exit(1);
 659                 }
 660
 661                 /* XXX: Default value defined in PF_KEY;
 662                  * See kernel's net/key/af_key.c(pfkey_getspi).
 663                  */
 664                 req.xspi.min = 0x100;
 665                 req.xspi.max = 0x0fffffff;
 666
 667                 /* XXX: IPCOMP spi is 16-bits;
 668                  * See kernel's net/xfrm/xfrm_user(verify_userspi_info).
 669                  */
 670                 if (req.xspi.info.id.proto == IPPROTO_COMP)
 671                         req.xspi.max = 0xffff;
 672         }
 673
 674         if (mark.m & mark.v) {
 675                 int r = addattr_l(&req.n, sizeof(req.buf), XFRMA_MARK,
 676                                   (void *)&mark, sizeof(mark));
 677                 if (r < 0) {
 678                         fprintf(stderr, "XFRMA_MARK failed\n");
 679                         exit(1);
 680                 }
 681         }
 682
 683         if (rtnl_open_byproto(&rth, 0, NETLINK_XFRM) < 0)
 684                 exit(1);
 685
 686         if (req.xspi.info.family == AF_UNSPEC)
 687                 req.xspi.info.family = AF_INET;
 688
 689
 690         if (rtnl_talk(&rth, &req.n, 0, 0, res_n, NULL, NULL) < 0)
 691                 exit(2);
 692
 693         if (xfrm_state_print(NULL, res_n, (void*)stdout) < 0) {
 694                 fprintf(stderr, "An error :-)\n");
 695                 exit(1);
 696         }
 697
 698         rtnl_close(&rth);
 699
 700         return 0;
 701 }
 702
 703 static int xfrm_state_filter_match(struct xfrm_usersa_info *xsinfo)
 704 {
 705         if (!filter.use)
 706                 return 1;
 707
 708         if (filter.id_src_mask)
 709                 if (xfrm_addr_match(&xsinfo->saddr, &filter.xsinfo.saddr,
 710                                     filter.id_src_mask))
 711                         return 0;
 712         if (filter.id_dst_mask)
 713                 if (xfrm_addr_match(&xsinfo->id.daddr, &filter.xsinfo.id.daddr,
 714                                     filter.id_dst_mask))
 715                         return 0;
 716         if ((xsinfo->id.proto^filter.xsinfo.id.proto)&filter.id_proto_mask)
 717                 return 0;
 718         if ((xsinfo->id.spi^filter.xsinfo.id.spi)&filter.id_spi_mask)
 719                 return 0;
 720         if ((xsinfo->mode^filter.xsinfo.mode)&filter.mode_mask)
 721                 return 0;
 722         if ((xsinfo->reqid^filter.xsinfo.reqid)&filter.reqid_mask)
 723                 return 0;
 724         if (filter.state_flags_mask)
 725                 if ((xsinfo->flags & filter.xsinfo.flags) == 0)
 726                         return 0;
 727
 728         return 1;
 729 }
 730
 731 int xfrm_state_print(const struct sockaddr_nl *who, struct nlmsghdr *n,
 732                      void *arg)
 733 {
 734         FILE *fp = (FILE*)arg;
 735         struct rtattr * tb[XFRMA_MAX+1];
 736         struct rtattr * rta;
 737         struct xfrm_usersa_info *xsinfo = NULL;
 738         struct xfrm_user_expire *xexp = NULL;
 739         struct xfrm_usersa_id   *xsid = NULL;
 740         int len = n->nlmsg_len;
 741
 742         if (n->nlmsg_type != XFRM_MSG_NEWSA &&
 743             n->nlmsg_type != XFRM_MSG_DELSA &&
 744             n->nlmsg_type != XFRM_MSG_UPDSA &&
 745             n->nlmsg_type != XFRM_MSG_EXPIRE) {
 746                 fprintf(stderr, "Not a state: %08x %08x %08x\n",
 747                         n->nlmsg_len, n->nlmsg_type, n->nlmsg_flags);
 748                 return 0;
 749         }
 750
 751         if (n->nlmsg_type == XFRM_MSG_DELSA) {
 752                 /* Dont blame me for this .. Herbert made me do it */
 753                 xsid = NLMSG_DATA(n);
 754                 len -= NLMSG_SPACE(sizeof(*xsid));
 755         } else if (n->nlmsg_type == XFRM_MSG_EXPIRE) {
 756                 xexp = NLMSG_DATA(n);
 757                 xsinfo = &xexp->state;
 758                 len -= NLMSG_SPACE(sizeof(*xexp));
 759         } else {
 760                 xexp = NULL;
 761                 xsinfo = NLMSG_DATA(n);
 762                 len -= NLMSG_SPACE(sizeof(*xsinfo));
 763         }
 764
 765         if (len < 0) {
 766                 fprintf(stderr, "BUG: wrong nlmsg len %d\n", len);
 767                 return -1;
 768         }
 769
 770         if (xsinfo && !xfrm_state_filter_match(xsinfo))
 771                 return 0;
 772
 773         if (n->nlmsg_type == XFRM_MSG_DELSA)
 774                 fprintf(fp, "Deleted ");
 775         else if (n->nlmsg_type == XFRM_MSG_UPDSA)
 776                 fprintf(fp, "Updated ");
 777         else if (n->nlmsg_type == XFRM_MSG_EXPIRE)
 778                 fprintf(fp, "Expired ");
 779
 780         if (n->nlmsg_type == XFRM_MSG_DELSA)
 781                 rta = XFRMSID_RTA(xsid);
 782         else if (n->nlmsg_type == XFRM_MSG_EXPIRE)
 783                 rta = XFRMEXP_RTA(xexp);
 784         else
 785                 rta = XFRMS_RTA(xsinfo);
 786
 787         parse_rtattr(tb, XFRMA_MAX, rta, len);
 788
 789         if (n->nlmsg_type == XFRM_MSG_DELSA) {
 790                 //xfrm_policy_id_print();
 791
 792                 if (!tb[XFRMA_SA]) {
 793                         fprintf(stderr, "Buggy XFRM_MSG_DELSA: no XFRMA_SA\n");
 794                         return -1;
 795                 }
 796                 if (RTA_PAYLOAD(tb[XFRMA_SA]) < sizeof(*xsinfo)) {
 797                         fprintf(stderr, "Buggy XFRM_MSG_DELPOLICY: too short XFRMA_POLICY len\n");
 798                         return -1;
 799                 }
 800                 xsinfo = RTA_DATA(tb[XFRMA_SA]);
 801         }
 802
 803         xfrm_state_info_print(xsinfo, tb, fp, NULL, NULL);
 804
 805         if (n->nlmsg_type == XFRM_MSG_EXPIRE) {
 806                 fprintf(fp, "\t");
 807                 fprintf(fp, "hard %u", xexp->hard);
 808                 fprintf(fp, "%s", _SL_);
 809         }
 810
 811         if (oneline)
 812                 fprintf(fp, "\n");
 813         fflush(fp);
 814
 815         return 0;
 816 }
 817
 818 static int xfrm_state_get_or_delete(int argc, char **argv, int delete)
 819 {
 820         struct rtnl_handle rth;
 821         struct {
 822                 struct nlmsghdr         n;
 823                 struct xfrm_usersa_id   xsid;
 824                 char                    buf[RTA_BUF_SIZE];
 825         } req;
 826         struct xfrm_id id;
 827         char *idp = NULL;
 828         struct xfrm_mark mark = {0, 0};
 829
 830         memset(&req, 0, sizeof(req));
 831
 832         req.n.nlmsg_len = NLMSG_LENGTH(sizeof(req.xsid));
 833         req.n.nlmsg_flags = NLM_F_REQUEST;
 834         req.n.nlmsg_type = delete ? XFRM_MSG_DELSA : XFRM_MSG_GETSA;
 835         req.xsid.family = preferred_family;
 836
 837         while (argc > 0) {
 838                 xfrm_address_t saddr;
 839
 840                 if (strcmp(*argv, "mark") == 0) {
 841                         xfrm_parse_mark(&mark, &argc, &argv);
 842                 } else {
 843                         if (idp)
 844                                 invarg("unknown", *argv);
 845                         idp = *argv;
 846
 847                         /* ID */
 848                         memset(&id, 0, sizeof(id));
 849                         memset(&saddr, 0, sizeof(saddr));
 850                         xfrm_id_parse(&saddr, &id, &req.xsid.family, 0,
 851                                       &argc, &argv);
 852
 853                         memcpy(&req.xsid.daddr, &id.daddr, sizeof(req.xsid.daddr));
 854                         req.xsid.spi = id.spi;
 855                         req.xsid.proto = id.proto;
 856
 857                         addattr_l(&req.n, sizeof(req.buf), XFRMA_SRCADDR,
 858                                   (void *)&saddr, sizeof(saddr));
 859                 }
 860
 861                 argc--; argv++;
 862         }
 863
 864         if (mark.m & mark.v) {
 865                 int r = addattr_l(&req.n, sizeof(req.buf), XFRMA_MARK,
 866                                   (void *)&mark, sizeof(mark));
 867                 if (r < 0) {
 868                         fprintf(stderr, "XFRMA_MARK failed\n");
 869                         exit(1);
 870                 }
 871         }
 872
 873         if (rtnl_open_byproto(&rth, 0, NETLINK_XFRM) < 0)
 874                 exit(1);
 875
 876         if (req.xsid.family == AF_UNSPEC)
 877                 req.xsid.family = AF_INET;
 878
 879         if (delete) {
 880                 if (rtnl_talk(&rth, &req.n, 0, 0, NULL, NULL, NULL) < 0)
 881                         exit(2);
 882         } else {
 883                 char buf[NLMSG_BUF_SIZE];
 884                 struct nlmsghdr *res_n = (struct nlmsghdr *)buf;
 885
 886                 memset(buf, 0, sizeof(buf));
 887
 888                 if (rtnl_talk(&rth, &req.n, 0, 0, res_n, NULL, NULL) < 0)
 889                         exit(2);
 890
 891                 if (xfrm_state_print(NULL, res_n, (void*)stdout) < 0) {
 892                         fprintf(stderr, "An error :-)\n");
 893                         exit(1);
 894                 }
 895         }
 896
 897         rtnl_close(&rth);
 898
 899         return 0;
 900 }
 901
 902 /*
 903  * With an existing state of nlmsg, make new nlmsg for deleting the state
 904  * and store it to buffer.
 905  */
 906 static int xfrm_state_keep(const struct sockaddr_nl *who,
 907                            struct nlmsghdr *n,
 908                            void *arg)
 909 {
 910         struct xfrm_buffer *xb = (struct xfrm_buffer *)arg;
 911         struct rtnl_handle *rth = xb->rth;
 912         struct xfrm_usersa_info *xsinfo = NLMSG_DATA(n);
 913         int len = n->nlmsg_len;
 914         struct nlmsghdr *new_n;
 915         struct xfrm_usersa_id *xsid;
 916
 917         if (n->nlmsg_type != XFRM_MSG_NEWSA) {
 918                 fprintf(stderr, "Not a state: %08x %08x %08x\n",
 919                         n->nlmsg_len, n->nlmsg_type, n->nlmsg_flags);
 920                 return 0;
 921         }
 922
 923         len -= NLMSG_LENGTH(sizeof(*xsinfo));
 924         if (len < 0) {
 925                 fprintf(stderr, "BUG: wrong nlmsg len %d\n", len);
 926                 return -1;
 927         }
 928
 929         if (!xfrm_state_filter_match(xsinfo))
 930                 return 0;
 931
 932         if (xb->offset > xb->size) {
 933                 fprintf(stderr, "State buffer overflow\n");
 934                 return -1;
 935         }
 936
 937         new_n = (struct nlmsghdr *)(xb->buf + xb->offset);
 938         new_n->nlmsg_len = NLMSG_LENGTH(sizeof(*xsid));
 939         new_n->nlmsg_flags = NLM_F_REQUEST;
 940         new_n->nlmsg_type = XFRM_MSG_DELSA;
 941         new_n->nlmsg_seq = ++rth->seq;
 942
 943         xsid = NLMSG_DATA(new_n);
 944         xsid->family = xsinfo->family;
 945         memcpy(&xsid->daddr, &xsinfo->id.daddr, sizeof(xsid->daddr));
 946         xsid->spi = xsinfo->id.spi;
 947         xsid->proto = xsinfo->id.proto;
 948
 949         addattr_l(new_n, xb->size, XFRMA_SRCADDR, &xsinfo->saddr,
 950                   sizeof(xsid->daddr));
 951
 952         xb->offset += new_n->nlmsg_len;
 953         xb->nlmsg_count ++;
 954
 955         return 0;
 956 }
 957
 958 static int xfrm_state_list_or_deleteall(int argc, char **argv, int deleteall)
 959 {
 960         char *idp = NULL;
 961         struct rtnl_handle rth;
 962
 963         if(argc > 0)
 964                 filter.use = 1;
 965         filter.xsinfo.family = preferred_family;
 966
 967         while (argc > 0) {
 968                 if (strcmp(*argv, "mode") == 0) {
 969                         NEXT_ARG();
 970                         xfrm_mode_parse(&filter.xsinfo.mode, &argc, &argv);
 971
 972                         filter.mode_mask = XFRM_FILTER_MASK_FULL;
 973
 974                 } else if (strcmp(*argv, "reqid") == 0) {
 975                         NEXT_ARG();
 976                         xfrm_reqid_parse(&filter.xsinfo.reqid, &argc, &argv);
 977
 978                         filter.reqid_mask = XFRM_FILTER_MASK_FULL;
 979
 980                 } else if (strcmp(*argv, "flag") == 0) {
 981                         NEXT_ARG();
 982                         xfrm_state_flag_parse(&filter.xsinfo.flags, &argc, &argv);
 983
 984                         filter.state_flags_mask = XFRM_FILTER_MASK_FULL;
 985
 986                 } else {
 987                         if (idp)
 988                                 invarg("unknown", *argv);
 989                         idp = *argv;
 990
 991                         /* ID */
 992                         xfrm_id_parse(&filter.xsinfo.saddr, &filter.xsinfo.id,
 993                                       &filter.xsinfo.family, 1, &argc, &argv);
 994                         if (preferred_family == AF_UNSPEC)
 995                                 preferred_family = filter.xsinfo.family;
 996                 }
 997                 argc--; argv++;
 998         }
 999
1000         if (rtnl_open_byproto(&rth, 0, NETLINK_XFRM) < 0)
1001                 exit(1);
1002
1003         if (deleteall) {
1004                 struct xfrm_buffer xb;
1005                 char buf[NLMSG_DELETEALL_BUF_SIZE];
1006                 int i;
1007
1008                 xb.buf = buf;
1009                 xb.size = sizeof(buf);
1010                 xb.rth = &rth;
1011
1012                 for (i = 0; ; i++) {
1013                         xb.offset = 0;
1014                         xb.nlmsg_count = 0;
1015
1016                         if (show_stats > 1)
1017                                 fprintf(stderr, "Delete-all round = %d\n", i);
1018
1019                         if (rtnl_wilddump_request(&rth, preferred_family, XFRM_MSG_GETSA) < 0) {
1020                                 perror("Cannot send dump request");
1021                                 exit(1);
1022                         }
1023
1024                         if (rtnl_dump_filter(&rth, xfrm_state_keep, &xb, NULL, NULL) < 0) {
1025                                 fprintf(stderr, "Delete-all terminated\n");
1026                                 exit(1);
1027                         }
1028                         if (xb.nlmsg_count == 0) {
1029                                 if (show_stats > 1)
1030                                         fprintf(stderr, "Delete-all completed\n");
1031                                 break;
1032                         }
1033
1034                         if (rtnl_send_check(&rth, xb.buf, xb.offset) < 0) {
1035                                 perror("Failed to send delete-all request\n");
1036                                 exit(1);
1037                         }
1038                         if (show_stats > 1)
1039                                 fprintf(stderr, "Delete-all nlmsg count = %d\n", xb.nlmsg_count);
1040
1041                         xb.offset = 0;
1042                         xb.nlmsg_count = 0;
1043                 }
1044
1045         } else {
1046                 if (rtnl_wilddump_request(&rth, preferred_family, XFRM_MSG_GETSA) < 0) {
1047                         perror("Cannot send dump request");
1048                         exit(1);
1049                 }
1050
1051                 if (rtnl_dump_filter(&rth, xfrm_state_print, stdout, NULL, NULL) < 0) {
1052                         fprintf(stderr, "Dump terminated\n");
1053                         exit(1);
1054                 }
1055         }
1056
1057         rtnl_close(&rth);
1058
1059         exit(0);
1060 }
1061
1062 int print_sadinfo(struct nlmsghdr *n, void *arg)
1063 {
1064         FILE *fp = (FILE*)arg;
1065         __u32 *f = NLMSG_DATA(n);
1066         struct rtattr *tb[XFRMA_SAD_MAX+1];
1067         struct rtattr *rta;
1068         __u32 *cnt;
1069
1070         int len = n->nlmsg_len;
1071
1072         len -= NLMSG_LENGTH(sizeof(__u32));
1073         if (len < 0) {
1074                 fprintf(stderr, "SADinfo: Wrong len %d\n", len);
1075                 return -1;
1076         }
1077
1078         rta = XFRMSAPD_RTA(f);
1079         parse_rtattr(tb, XFRMA_SAD_MAX, rta, len);
1080
1081         if (tb[XFRMA_SAD_CNT]) {
1082                 fprintf(fp,"\t SAD");
1083                 cnt = (__u32 *)RTA_DATA(tb[XFRMA_SAD_CNT]);
1084                 fprintf(fp," count %d", *cnt);
1085         } else {
1086                 fprintf(fp,"BAD SAD info returned\n");
1087                 return -1;
1088         }
1089
1090         if (show_stats) {
1091                 if (tb[XFRMA_SAD_HINFO]) {
1092                         struct xfrmu_sadhinfo *si;
1093
1094                         if (RTA_PAYLOAD(tb[XFRMA_SAD_HINFO]) < sizeof(*si)) {
1095                                 fprintf(fp,"BAD SAD length returned\n");
1096                                 return -1;
1097                         }
1098
1099                         si = RTA_DATA(tb[XFRMA_SAD_HINFO]);
1100                         fprintf(fp," (buckets ");
1101                         fprintf(fp,"count %d", si->sadhcnt);
1102                         fprintf(fp," Max %d", si->sadhmcnt);
1103                         fprintf(fp,")");
1104                 }
1105         }
1106         fprintf(fp,"\n");
1107
1108         return 0;
1109 }
1110
1111 static int xfrm_sad_getinfo(int argc, char **argv)
1112 {
1113         struct rtnl_handle rth;
1114         struct {
1115                 struct nlmsghdr                 n;
1116                 __u32                           flags;
1117                 char                            ans[64];
1118         } req;
1119
1120         memset(&req, 0, sizeof(req));
1121         req.n.nlmsg_len = NLMSG_LENGTH(sizeof(req.flags));
1122         req.n.nlmsg_flags = NLM_F_REQUEST;
1123         req.n.nlmsg_type = XFRM_MSG_GETSADINFO;
1124         req.flags = 0XFFFFFFFF;
1125
1126         if (rtnl_open_byproto(&rth, 0, NETLINK_XFRM) < 0)
1127                 exit(1);
1128
1129         if (rtnl_talk(&rth, &req.n, 0, 0, &req.n, NULL, NULL) < 0)
1130                 exit(2);
1131
1132         print_sadinfo(&req.n, (void*)stdout);
1133
1134         rtnl_close(&rth);
1135
1136         return 0;
1137 }
1138
1139 static int xfrm_state_flush(int argc, char **argv)
1140 {
1141         struct rtnl_handle rth;
1142         struct {
1143                 struct nlmsghdr                 n;
1144                 struct xfrm_usersa_flush        xsf;
1145         } req;
1146         char *protop = NULL;
1147
1148         memset(&req, 0, sizeof(req));
1149
1150         req.n.nlmsg_len = NLMSG_LENGTH(sizeof(req.xsf));
1151         req.n.nlmsg_flags = NLM_F_REQUEST;
1152         req.n.nlmsg_type = XFRM_MSG_FLUSHSA;
1153         req.xsf.proto = 0;
1154
1155         while (argc > 0) {
1156                 if (strcmp(*argv, "proto") == 0) {
1157                         int ret;
1158
1159                         if (protop)
1160                                 duparg("proto", *argv);
1161                         protop = *argv;
1162
1163                         NEXT_ARG();
1164
1165                         ret = xfrm_xfrmproto_getbyname(*argv);
1166                         if (ret < 0)
1167                                 invarg("\"XFRM_PROTO\" is invalid", *argv);
1168
1169                         req.xsf.proto = (__u8)ret;
1170                 } else
1171                         invarg("unknown", *argv);
1172
1173                 argc--; argv++;
1174         }
1175
1176         if (rtnl_open_byproto(&rth, 0, NETLINK_XFRM) < 0)
1177                 exit(1);
1178
1179         if (show_stats > 1)
1180                 fprintf(stderr, "Flush state proto=%s\n",
1181                         strxf_xfrmproto(req.xsf.proto));
1182
1183         if (rtnl_talk(&rth, &req.n, 0, 0, NULL, NULL, NULL) < 0)
1184                 exit(2);
1185
1186         rtnl_close(&rth);
1187
1188         return 0;
1189 }
1190
1191 int do_xfrm_state(int argc, char **argv)
1192 {
1193         if (argc < 1)
1194                 return xfrm_state_list_or_deleteall(0, NULL, 0);
1195
1196         if (matches(*argv, "add") == 0)
1197                 return xfrm_state_modify(XFRM_MSG_NEWSA, 0,
1198                                          argc-1, argv+1);
1199         if (matches(*argv, "update") == 0)
1200                 return xfrm_state_modify(XFRM_MSG_UPDSA, 0,
1201                                          argc-1, argv+1);
1202         if (matches(*argv, "allocspi") == 0)
1203                 return xfrm_state_allocspi(argc-1, argv+1);
1204         if (matches(*argv, "delete") == 0)
1205                 return xfrm_state_get_or_delete(argc-1, argv+1, 1);
1206         if (matches(*argv, "deleteall") == 0 || matches(*argv, "delall") == 0)
1207                 return xfrm_state_list_or_deleteall(argc-1, argv+1, 1);
1208         if (matches(*argv, "list") == 0 || matches(*argv, "show") == 0
1209             || matches(*argv, "lst") == 0)
1210                 return xfrm_state_list_or_deleteall(argc-1, argv+1, 0);
1211         if (matches(*argv, "get") == 0)
1212                 return xfrm_state_get_or_delete(argc-1, argv+1, 0);
1213         if (matches(*argv, "flush") == 0)
1214                 return xfrm_state_flush(argc-1, argv+1);
1215         if (matches(*argv, "count") == 0) {
1216                 return xfrm_sad_getinfo(argc, argv);
1217         }
1218         if (matches(*argv, "help") == 0)
1219                 usage();
1220         fprintf(stderr, "Command \"%s\" is unknown, try \"ip xfrm state help\".\n", *argv);
1221         exit(-1);
1222 }