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 [ ALGO-LIST ] [ mode MODE ]\n");
  60         fprintf(stderr, "        [ mark MARK [ mask MASK ] ] [ reqid REQID ] [ seq SEQ ]\n");
  61         fprintf(stderr, "        [ replay-window SIZE ] [ replay-seq SEQ ] [ replay-oseq SEQ ]\n");
  62         fprintf(stderr, "        [ flag FLAG-LIST ] [ sel SELECTOR ] [ LIMIT-LIST ] [ encap ENCAP ]\n");
  63         fprintf(stderr, "        [ coa ADDR[/PLEN] ] [ ctx CTX ]\n");
  64         fprintf(stderr, "Usage: ip xfrm state allocspi ID [ mode MODE ] [ mark MARK [ mask MASK ] ]\n");
  65         fprintf(stderr, "        [ reqid REQID ] [ seq SEQ ] [ min SPI max SPI ]\n");
  66         fprintf(stderr, "Usage: ip xfrm state { delete | get } ID [ mark MARK [ mask MASK ] ]\n");
  67         fprintf(stderr, "Usage: ip xfrm state { deleteall | list } [ ID ] [ mode MODE ] [ reqid REQID ]\n");
  68         fprintf(stderr, "        [ flag FLAG-LIST ]\n");
  69         fprintf(stderr, "Usage: ip xfrm state flush [ proto XFRM-PROTO ]\n");
  70         fprintf(stderr, "Usage: ip xfrm state count\n");
  71         fprintf(stderr, "ID := [ src ADDR ] [ dst ADDR ] [ proto XFRM-PROTO ] [ spi SPI ]\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\n", strxf_xfrmproto(IPPROTO_DSTOPTS));
  78         fprintf(stderr, "ALGO-LIST := [ ALGO-LIST ] ALGO\n");
  79         fprintf(stderr, "ALGO := { ");
  80         fprintf(stderr, "%s | ", strxf_algotype(XFRMA_ALG_CRYPT));
  81         fprintf(stderr, "%s | ", strxf_algotype(XFRMA_ALG_AUTH));
  82         fprintf(stderr, "%s", strxf_algotype(XFRMA_ALG_COMP));
  83         fprintf(stderr, " } ALGO-NAME ALGO-KEY |\n");
  84         fprintf(stderr, "        %s", strxf_algotype(XFRMA_ALG_AEAD));
  85         fprintf(stderr, " ALGO-NAME ALGO-KEY ALGO-ICV-LEN |\n");
  86         fprintf(stderr, "        %s", strxf_algotype(XFRMA_ALG_AUTH_TRUNC));
  87         fprintf(stderr, " ALGO-NAME ALGO-KEY ALGO-TRUNC-LEN\n");
  88         fprintf(stderr, "MODE := transport | tunnel | ro | in_trigger | beet\n");
  89         fprintf(stderr, "FLAG-LIST := [ FLAG-LIST ] FLAG\n");
  90         fprintf(stderr, "FLAG := noecn | decap-dscp | nopmtudisc | wildrecv | icmp | af-unspec | align4\n");
  91         fprintf(stderr, "SELECTOR := [ src ADDR[/PLEN] ] [ dst ADDR[/PLEN] ] [ dev DEV ] [ UPSPEC ]\n");
  92         fprintf(stderr, "UPSPEC := proto { { ");
  93         fprintf(stderr, "%s | ", strxf_proto(IPPROTO_TCP));
  94         fprintf(stderr, "%s | ", strxf_proto(IPPROTO_UDP));
  95         fprintf(stderr, "%s | ", strxf_proto(IPPROTO_SCTP));
  96         fprintf(stderr, "%s", strxf_proto(IPPROTO_DCCP));
  97         fprintf(stderr, " } [ sport PORT ] [ dport PORT ] |\n");
  98         fprintf(stderr, "                  { ");
  99         fprintf(stderr, "%s | ", strxf_proto(IPPROTO_ICMP));
 100         fprintf(stderr, "%s | ", strxf_proto(IPPROTO_ICMPV6));
 101         fprintf(stderr, "%s", strxf_proto(IPPROTO_MH));
 102         fprintf(stderr, " } [ type NUMBER ] [ code NUMBER ] |\n");
 103         fprintf(stderr, "                  %s", strxf_proto(IPPROTO_GRE));
 104         fprintf(stderr, " [ key { DOTTED-QUAD | NUMBER } ] | PROTO }\n");
 105         fprintf(stderr, "LIMIT-LIST := [ LIMIT-LIST ] limit LIMIT\n");
 106         fprintf(stderr, "LIMIT := { time-soft | time-hard | time-use-soft | time-use-hard } SECONDS |\n");
 107         fprintf(stderr, "         { byte-soft | byte-hard } SIZE | { packet-soft | packet-hard } COUNT\n");
 108         fprintf(stderr, "ENCAP := { espinudp | espinudp-nonike } SPORT DPORT OADDR\n");
 109
 110         exit(-1);
 111 }
 112
 113 static int xfrm_algo_parse(struct xfrm_algo *alg, enum xfrm_attr_type_t type,
 114                            char *name, char *key, char *buf, int max)
 115 {
 116         int len;
 117         int slen = strlen(key);
 118
 119 #if 0
 120         /* XXX: verifying both name and key is required! */
 121         fprintf(stderr, "warning: ALGO-NAME/ALGO-KEY will send to kernel promiscuously! (verifying them isn't implemented yet)\n");
 122 #endif
 123
 124         strncpy(alg->alg_name, name, sizeof(alg->alg_name));
 125
 126         if (slen > 2 && strncmp(key, "0x", 2) == 0) {
 127                 /* split two chars "0x" from the top */
 128                 char *p = key + 2;
 129                 int plen = slen - 2;
 130                 int i;
 131                 int j;
 132
 133                 /* Converting hexadecimal numbered string into real key;
 134                  * Convert each two chars into one char(value). If number
 135                  * of the length is odd, add zero on the top for rounding.
 136                  */
 137
 138                 /* calculate length of the converted values(real key) */
 139                 len = (plen + 1) / 2;
 140                 if (len > max)
 141                         invarg("\"ALGO-KEY\" makes buffer overflow\n", key);
 142
 143                 for (i = - (plen % 2), j = 0; j < len; i += 2, j++) {
 144                         char vbuf[3];
 145                         __u8 val;
 146
 147                         vbuf[0] = i >= 0 ? p[i] : '0';
 148                         vbuf[1] = p[i + 1];
 149                         vbuf[2] = '\0';
 150
 151                         if (get_u8(&val, vbuf, 16))
 152                                 invarg("\"ALGO-KEY\" is invalid", key);
 153
 154                         buf[j] = val;
 155                 }
 156         } else {
 157                 len = slen;
 158                 if (len > 0) {
 159                         if (len > max)
 160                                 invarg("\"ALGO-KEY\" makes buffer overflow\n", key);
 161
 162                         strncpy(buf, key, len);
 163                 }
 164         }
 165
 166         alg->alg_key_len = len * 8;
 167
 168         return 0;
 169 }
 170
 171 static int xfrm_seq_parse(__u32 *seq, int *argcp, char ***argvp)
 172 {
 173         int argc = *argcp;
 174         char **argv = *argvp;
 175
 176         if (get_u32(seq, *argv, 0))
 177                 invarg("\"SEQ\" is invalid", *argv);
 178
 179         *seq = htonl(*seq);
 180
 181         *argcp = argc;
 182         *argvp = argv;
 183
 184         return 0;
 185 }
 186
 187 static int xfrm_state_flag_parse(__u8 *flags, int *argcp, char ***argvp)
 188 {
 189         int argc = *argcp;
 190         char **argv = *argvp;
 191         int len = strlen(*argv);
 192
 193         if (len > 2 && strncmp(*argv, "0x", 2) == 0) {
 194                 __u8 val = 0;
 195
 196                 if (get_u8(&val, *argv, 16))
 197                         invarg("\"FLAG\" is invalid", *argv);
 198                 *flags = val;
 199         } else {
 200                 while (1) {
 201                         if (strcmp(*argv, "noecn") == 0)
 202                                 *flags |= XFRM_STATE_NOECN;
 203                         else if (strcmp(*argv, "decap-dscp") == 0)
 204                                 *flags |= XFRM_STATE_DECAP_DSCP;
 205                         else if (strcmp(*argv, "nopmtudisc") == 0)
 206                                 *flags |= XFRM_STATE_NOPMTUDISC;
 207                         else if (strcmp(*argv, "wildrecv") == 0)
 208                                 *flags |= XFRM_STATE_WILDRECV;
 209                         else if (strcmp(*argv, "icmp") == 0)
 210                                 *flags |= XFRM_STATE_ICMP;
 211                         else if (strcmp(*argv, "af-unspec") == 0)
 212                                 *flags |= XFRM_STATE_AF_UNSPEC;
 213                         else if (strcmp(*argv, "align4") == 0)
 214                                 *flags |= XFRM_STATE_ALIGN4;
 215                         else {
 216                                 PREV_ARG(); /* back track */
 217                                 break;
 218                         }
 219
 220                         if (!NEXT_ARG_OK())
 221                                 break;
 222                         NEXT_ARG();
 223                 }
 224         }
 225
 226         *argcp = argc;
 227         *argvp = argv;
 228
 229         return 0;
 230 }
 231
 232 static int xfrm_state_modify(int cmd, unsigned flags, int argc, char **argv)
 233 {
 234         struct rtnl_handle rth;
 235         struct {
 236                 struct nlmsghdr         n;
 237                 struct xfrm_usersa_info xsinfo;
 238                 char                    buf[RTA_BUF_SIZE];
 239         } req;
 240         struct xfrm_replay_state replay;
 241         char *idp = NULL;
 242         char *aeadop = NULL;
 243         char *ealgop = NULL;
 244         char *aalgop = NULL;
 245         char *calgop = NULL;
 246         char *coap = NULL;
 247         char *sctxp = NULL;
 248         struct xfrm_mark mark = {0, 0};
 249         struct {
 250                 struct xfrm_user_sec_ctx sctx;
 251                 char    str[CTX_BUF_SIZE];
 252         } ctx;
 253
 254         memset(&req, 0, sizeof(req));
 255         memset(&replay, 0, sizeof(replay));
 256         memset(&ctx, 0, sizeof(ctx));
 257
 258         req.n.nlmsg_len = NLMSG_LENGTH(sizeof(req.xsinfo));
 259         req.n.nlmsg_flags = NLM_F_REQUEST|flags;
 260         req.n.nlmsg_type = cmd;
 261         req.xsinfo.family = preferred_family;
 262
 263         req.xsinfo.lft.soft_byte_limit = XFRM_INF;
 264         req.xsinfo.lft.hard_byte_limit = XFRM_INF;
 265         req.xsinfo.lft.soft_packet_limit = XFRM_INF;
 266         req.xsinfo.lft.hard_packet_limit = XFRM_INF;
 267
 268         while (argc > 0) {
 269                 if (strcmp(*argv, "mode") == 0) {
 270                         NEXT_ARG();
 271                         xfrm_mode_parse(&req.xsinfo.mode, &argc, &argv);
 272                 } else if (strcmp(*argv, "mark") == 0) {
 273                         xfrm_parse_mark(&mark, &argc, &argv);
 274                 } else if (strcmp(*argv, "reqid") == 0) {
 275                         NEXT_ARG();
 276                         xfrm_reqid_parse(&req.xsinfo.reqid, &argc, &argv);
 277                 } else if (strcmp(*argv, "seq") == 0) {
 278                         NEXT_ARG();
 279                         xfrm_seq_parse(&req.xsinfo.seq, &argc, &argv);
 280                 } else if (strcmp(*argv, "replay-window") == 0) {
 281                         NEXT_ARG();
 282                         if (get_u8(&req.xsinfo.replay_window, *argv, 0))
 283                                 invarg("\"replay-window\" value is invalid", *argv);
 284                 } else if (strcmp(*argv, "replay-seq") == 0) {
 285                         NEXT_ARG();
 286                         if (get_u32(&replay.seq, *argv, 0))
 287                                 invarg("\"replay-seq\" value is invalid", *argv);
 288                 } else if (strcmp(*argv, "replay-oseq") == 0) {
 289                         NEXT_ARG();
 290                         if (get_u32(&replay.oseq, *argv, 0))
 291                                 invarg("\"replay-oseq\" value is invalid", *argv);
 292                 } else if (strcmp(*argv, "flag") == 0) {
 293                         NEXT_ARG();
 294                         xfrm_state_flag_parse(&req.xsinfo.flags, &argc, &argv);
 295                 } else if (strcmp(*argv, "sel") == 0) {
 296                         NEXT_ARG();
 297                         xfrm_selector_parse(&req.xsinfo.sel, &argc, &argv);
 298                 } else if (strcmp(*argv, "limit") == 0) {
 299                         NEXT_ARG();
 300                         xfrm_lifetime_cfg_parse(&req.xsinfo.lft, &argc, &argv);
 301                 } else if (strcmp(*argv, "encap") == 0) {
 302                         struct xfrm_encap_tmpl encap;
 303                         inet_prefix oa;
 304                         NEXT_ARG();
 305                         xfrm_encap_type_parse(&encap.encap_type, &argc, &argv);
 306                         NEXT_ARG();
 307                         if (get_u16(&encap.encap_sport, *argv, 0))
 308                                 invarg("\"encap\" sport value is invalid", *argv);
 309                         encap.encap_sport = htons(encap.encap_sport);
 310                         NEXT_ARG();
 311                         if (get_u16(&encap.encap_dport, *argv, 0))
 312                                 invarg("\"encap\" dport value is invalid", *argv);
 313                         encap.encap_dport = htons(encap.encap_dport);
 314                         NEXT_ARG();
 315                         get_addr(&oa, *argv, AF_UNSPEC);
 316                         memcpy(&encap.encap_oa, &oa.data, sizeof(encap.encap_oa));
 317                         addattr_l(&req.n, sizeof(req.buf), XFRMA_ENCAP,
 318                                   (void *)&encap, sizeof(encap));
 319                 } else if (strcmp(*argv, "coa") == 0) {
 320                         inet_prefix coa;
 321                         xfrm_address_t xcoa;
 322
 323                         if (coap)
 324                                 duparg("coa", *argv);
 325                         coap = *argv;
 326
 327                         NEXT_ARG();
 328
 329                         get_prefix(&coa, *argv, preferred_family);
 330                         if (coa.family == AF_UNSPEC)
 331                                 invarg("\"coa\" address family is AF_UNSPEC", *argv);
 332                         if (coa.bytelen > sizeof(xcoa))
 333                                 invarg("\"coa\" address length is too large", *argv);
 334
 335                         memset(&xcoa, 0, sizeof(xcoa));
 336                         memcpy(&xcoa, &coa.data, coa.bytelen);
 337
 338                         addattr_l(&req.n, sizeof(req.buf), XFRMA_COADDR,
 339                                   (void *)&xcoa, sizeof(xcoa));
 340                 } else if (strcmp(*argv, "ctx") == 0) {
 341                         char *context;
 342
 343                         if (sctxp)
 344                                 duparg("ctx", *argv);
 345                         sctxp = *argv;
 346
 347                         NEXT_ARG();
 348                         context = *argv;
 349
 350                         xfrm_sctx_parse((char *)&ctx.str, context, &ctx.sctx);
 351                         addattr_l(&req.n, sizeof(req.buf), XFRMA_SEC_CTX,
 352                                   (void *)&ctx, ctx.sctx.len);
 353                 } else {
 354                         /* try to assume ALGO */
 355                         int type = xfrm_algotype_getbyname(*argv);
 356                         switch (type) {
 357                         case XFRMA_ALG_AEAD:
 358                         case XFRMA_ALG_CRYPT:
 359                         case XFRMA_ALG_AUTH:
 360                         case XFRMA_ALG_AUTH_TRUNC:
 361                         case XFRMA_ALG_COMP:
 362                         {
 363                                 /* ALGO */
 364                                 struct {
 365                                         union {
 366                                                 struct xfrm_algo alg;
 367                                                 struct xfrm_algo_aead aead;
 368                                                 struct xfrm_algo_auth auth;
 369                                         } u;
 370                                         char buf[XFRM_ALGO_KEY_BUF_SIZE];
 371                                 } alg = {};
 372                                 int len;
 373                                 __u32 icvlen, trunclen;
 374                                 char *name;
 375                                 char *key;
 376                                 char *buf;
 377
 378                                 switch (type) {
 379                                 case XFRMA_ALG_AEAD:
 380                                         if (aeadop)
 381                                                 duparg("ALGO-TYPE", *argv);
 382                                         aeadop = *argv;
 383                                         break;
 384                                 case XFRMA_ALG_CRYPT:
 385                                         if (ealgop)
 386                                                 duparg("ALGO-TYPE", *argv);
 387                                         ealgop = *argv;
 388                                         break;
 389                                 case XFRMA_ALG_AUTH:
 390                                 case XFRMA_ALG_AUTH_TRUNC:
 391                                         if (aalgop)
 392                                                 duparg("ALGO-TYPE", *argv);
 393                                         aalgop = *argv;
 394                                         break;
 395                                 case XFRMA_ALG_COMP:
 396                                         if (calgop)
 397                                                 duparg("ALGO-TYPE", *argv);
 398                                         calgop = *argv;
 399                                         break;
 400                                 default:
 401                                         /* not reached */
 402                                         invarg("\"ALGO-TYPE\" is invalid\n", *argv);
 403                                 }
 404
 405                                 if (!NEXT_ARG_OK())
 406                                         missarg("ALGO-NAME");
 407                                 NEXT_ARG();
 408                                 name = *argv;
 409
 410                                 if (!NEXT_ARG_OK())
 411                                         missarg("ALGO-KEY");
 412                                 NEXT_ARG();
 413                                 key = *argv;
 414
 415                                 buf = alg.u.alg.alg_key;
 416                                 len = sizeof(alg.u.alg);
 417
 418                                 switch (type) {
 419                                 case XFRMA_ALG_AEAD:
 420                                         if (!NEXT_ARG_OK())
 421                                                 missarg("ALGO-ICV-LEN");
 422                                         NEXT_ARG();
 423                                         if (get_u32(&icvlen, *argv, 0))
 424                                                 invarg("\"aead\" ICV length is invalid",
 425                                                        *argv);
 426                                         alg.u.aead.alg_icv_len = icvlen;
 427
 428                                         buf = alg.u.aead.alg_key;
 429                                         len = sizeof(alg.u.aead);
 430                                         break;
 431                                 case XFRMA_ALG_AUTH_TRUNC:
 432                                         if (!NEXT_ARG_OK())
 433                                                 missarg("ALGO-TRUNC-LEN");
 434                                         NEXT_ARG();
 435                                         if (get_u32(&trunclen, *argv, 0))
 436                                                 invarg("\"auth\" trunc length is invalid",
 437                                                        *argv);
 438                                         alg.u.auth.alg_trunc_len = trunclen;
 439
 440                                         buf = alg.u.auth.alg_key;
 441                                         len = sizeof(alg.u.auth);
 442                                         break;
 443                                 }
 444
 445                                 xfrm_algo_parse((void *)&alg, type, name, key,
 446                                                 buf, sizeof(alg.buf));
 447                                 len += alg.u.alg.alg_key_len;
 448
 449                                 addattr_l(&req.n, sizeof(req.buf), type,
 450                                           (void *)&alg, len);
 451                                 break;
 452                         }
 453                         default:
 454                                 /* try to assume ID */
 455                                 if (idp)
 456                                         invarg("unknown", *argv);
 457                                 idp = *argv;
 458
 459                                 /* ID */
 460                                 xfrm_id_parse(&req.xsinfo.saddr, &req.xsinfo.id,
 461                                               &req.xsinfo.family, 0, &argc, &argv);
 462                                 if (preferred_family == AF_UNSPEC)
 463                                         preferred_family = req.xsinfo.family;
 464                         }
 465                 }
 466                 argc--; argv++;
 467         }
 468
 469         if (replay.seq || replay.oseq)
 470                 addattr_l(&req.n, sizeof(req.buf), XFRMA_REPLAY_VAL,
 471                           (void *)&replay, sizeof(replay));
 472
 473         if (!idp) {
 474                 fprintf(stderr, "Not enough information: \"ID\" is required\n");
 475                 exit(1);
 476         }
 477
 478         if (mark.m & mark.v) {
 479                 int r = addattr_l(&req.n, sizeof(req.buf), XFRMA_MARK,
 480                                   (void *)&mark, sizeof(mark));
 481                 if (r < 0) {
 482                         fprintf(stderr, "XFRMA_MARK failed\n");
 483                         exit(1);
 484                 }
 485         }
 486
 487         switch (req.xsinfo.mode) {
 488         case XFRM_MODE_TRANSPORT:
 489         case XFRM_MODE_TUNNEL:
 490                 if (!xfrm_xfrmproto_is_ipsec(req.xsinfo.id.proto)) {
 491                         fprintf(stderr, "\"mode\" is invalid with proto=%s\n",
 492                                 strxf_xfrmproto(req.xsinfo.id.proto));
 493                         exit(1);
 494                 }
 495                 break;
 496         case XFRM_MODE_ROUTEOPTIMIZATION:
 497         case XFRM_MODE_IN_TRIGGER:
 498                 if (!xfrm_xfrmproto_is_ro(req.xsinfo.id.proto)) {
 499                         fprintf(stderr, "\"mode\" is invalid with proto=%s\n",
 500                                 strxf_xfrmproto(req.xsinfo.id.proto));
 501                         exit(1);
 502                 }
 503                 if (req.xsinfo.id.spi != 0) {
 504                         fprintf(stderr, "\"spi\" must be 0 with proto=%s\n",
 505                                 strxf_xfrmproto(req.xsinfo.id.proto));
 506                         exit(1);
 507                 }
 508                 break;
 509         default:
 510                 break;
 511         }
 512
 513         if (aeadop || ealgop || aalgop || calgop) {
 514                 if (!xfrm_xfrmproto_is_ipsec(req.xsinfo.id.proto)) {
 515                         fprintf(stderr, "\"ALGO\" is invalid with proto=%s\n",
 516                                 strxf_xfrmproto(req.xsinfo.id.proto));
 517                         exit(1);
 518                 }
 519         } else {
 520                 if (xfrm_xfrmproto_is_ipsec(req.xsinfo.id.proto)) {
 521                         fprintf(stderr, "\"ALGO\" is required with proto=%s\n",
 522                                 strxf_xfrmproto(req.xsinfo.id.proto));
 523                         exit (1);
 524                 }
 525         }
 526
 527         if (coap) {
 528                 if (!xfrm_xfrmproto_is_ro(req.xsinfo.id.proto)) {
 529                         fprintf(stderr, "\"coa\" is invalid with proto=%s\n",
 530                                 strxf_xfrmproto(req.xsinfo.id.proto));
 531                         exit(1);
 532                 }
 533         } else {
 534                 if (xfrm_xfrmproto_is_ro(req.xsinfo.id.proto)) {
 535                         fprintf(stderr, "\"coa\" is required with proto=%s\n",
 536                                 strxf_xfrmproto(req.xsinfo.id.proto));
 537                         exit (1);
 538                 }
 539         }
 540
 541         if (rtnl_open_byproto(&rth, 0, NETLINK_XFRM) < 0)
 542                 exit(1);
 543
 544         if (req.xsinfo.family == AF_UNSPEC)
 545                 req.xsinfo.family = AF_INET;
 546
 547         if (rtnl_talk(&rth, &req.n, 0, 0, NULL) < 0)
 548                 exit(2);
 549
 550         rtnl_close(&rth);
 551
 552         return 0;
 553 }
 554
 555 static int xfrm_state_allocspi(int argc, char **argv)
 556 {
 557         struct rtnl_handle rth;
 558         struct {
 559                 struct nlmsghdr         n;
 560                 struct xfrm_userspi_info xspi;
 561                 char                    buf[RTA_BUF_SIZE];
 562         } req;
 563         char *idp = NULL;
 564         char *minp = NULL;
 565         char *maxp = NULL;
 566         struct xfrm_mark mark = {0, 0};
 567         char res_buf[NLMSG_BUF_SIZE];
 568         struct nlmsghdr *res_n = (struct nlmsghdr *)res_buf;
 569
 570         memset(res_buf, 0, sizeof(res_buf));
 571
 572         memset(&req, 0, sizeof(req));
 573
 574         req.n.nlmsg_len = NLMSG_LENGTH(sizeof(req.xspi));
 575         req.n.nlmsg_flags = NLM_F_REQUEST;
 576         req.n.nlmsg_type = XFRM_MSG_ALLOCSPI;
 577         req.xspi.info.family = preferred_family;
 578
 579 #if 0
 580         req.xsinfo.lft.soft_byte_limit = XFRM_INF;
 581         req.xsinfo.lft.hard_byte_limit = XFRM_INF;
 582         req.xsinfo.lft.soft_packet_limit = XFRM_INF;
 583         req.xsinfo.lft.hard_packet_limit = XFRM_INF;
 584 #endif
 585
 586         while (argc > 0) {
 587                 if (strcmp(*argv, "mode") == 0) {
 588                         NEXT_ARG();
 589                         xfrm_mode_parse(&req.xspi.info.mode, &argc, &argv);
 590                 } else if (strcmp(*argv, "mark") == 0) {
 591                         xfrm_parse_mark(&mark, &argc, &argv);
 592                 } else if (strcmp(*argv, "reqid") == 0) {
 593                         NEXT_ARG();
 594                         xfrm_reqid_parse(&req.xspi.info.reqid, &argc, &argv);
 595                 } else if (strcmp(*argv, "seq") == 0) {
 596                         NEXT_ARG();
 597                         xfrm_seq_parse(&req.xspi.info.seq, &argc, &argv);
 598                 } else if (strcmp(*argv, "min") == 0) {
 599                         if (minp)
 600                                 duparg("min", *argv);
 601                         minp = *argv;
 602
 603                         NEXT_ARG();
 604
 605                         if (get_u32(&req.xspi.min, *argv, 0))
 606                                 invarg("\"min\" value is invalid", *argv);
 607                 } else if (strcmp(*argv, "max") == 0) {
 608                         if (maxp)
 609                                 duparg("max", *argv);
 610                         maxp = *argv;
 611
 612                         NEXT_ARG();
 613
 614                         if (get_u32(&req.xspi.max, *argv, 0))
 615                                 invarg("\"max\" value is invalid", *argv);
 616                 } else {
 617                         /* try to assume ID */
 618                         if (idp)
 619                                 invarg("unknown", *argv);
 620                         idp = *argv;
 621
 622                         /* ID */
 623                         xfrm_id_parse(&req.xspi.info.saddr, &req.xspi.info.id,
 624                                       &req.xspi.info.family, 0, &argc, &argv);
 625                         if (req.xspi.info.id.spi) {
 626                                 fprintf(stderr, "\"SPI\" must be zero\n");
 627                                 exit(1);
 628                         }
 629                         if (preferred_family == AF_UNSPEC)
 630                                 preferred_family = req.xspi.info.family;
 631                 }
 632                 argc--; argv++;
 633         }
 634
 635         if (!idp) {
 636                 fprintf(stderr, "Not enough information: \"ID\" is required\n");
 637                 exit(1);
 638         }
 639
 640         if (minp) {
 641                 if (!maxp) {
 642                         fprintf(stderr, "\"max\" is missing\n");
 643                         exit(1);
 644                 }
 645                 if (req.xspi.min > req.xspi.max) {
 646                         fprintf(stderr, "\"min\" value is larger than \"max\" value\n");
 647                         exit(1);
 648                 }
 649         } else {
 650                 if (maxp) {
 651                         fprintf(stderr, "\"min\" is missing\n");
 652                         exit(1);
 653                 }
 654
 655                 /* XXX: Default value defined in PF_KEY;
 656                  * See kernel's net/key/af_key.c(pfkey_getspi).
 657                  */
 658                 req.xspi.min = 0x100;
 659                 req.xspi.max = 0x0fffffff;
 660
 661                 /* XXX: IPCOMP spi is 16-bits;
 662                  * See kernel's net/xfrm/xfrm_user(verify_userspi_info).
 663                  */
 664                 if (req.xspi.info.id.proto == IPPROTO_COMP)
 665                         req.xspi.max = 0xffff;
 666         }
 667
 668         if (mark.m & mark.v) {
 669                 int r = addattr_l(&req.n, sizeof(req.buf), XFRMA_MARK,
 670                                   (void *)&mark, sizeof(mark));
 671                 if (r < 0) {
 672                         fprintf(stderr, "XFRMA_MARK failed\n");
 673                         exit(1);
 674                 }
 675         }
 676
 677         if (rtnl_open_byproto(&rth, 0, NETLINK_XFRM) < 0)
 678                 exit(1);
 679
 680         if (req.xspi.info.family == AF_UNSPEC)
 681                 req.xspi.info.family = AF_INET;
 682
 683
 684         if (rtnl_talk(&rth, &req.n, 0, 0, res_n) < 0)
 685                 exit(2);
 686
 687         if (xfrm_state_print(NULL, res_n, (void*)stdout) < 0) {
 688                 fprintf(stderr, "An error :-)\n");
 689                 exit(1);
 690         }
 691
 692         rtnl_close(&rth);
 693
 694         return 0;
 695 }
 696
 697 static int xfrm_state_filter_match(struct xfrm_usersa_info *xsinfo)
 698 {
 699         if (!filter.use)
 700                 return 1;
 701
 702         if (filter.id_src_mask)
 703                 if (xfrm_addr_match(&xsinfo->saddr, &filter.xsinfo.saddr,
 704                                     filter.id_src_mask))
 705                         return 0;
 706         if (filter.id_dst_mask)
 707                 if (xfrm_addr_match(&xsinfo->id.daddr, &filter.xsinfo.id.daddr,
 708                                     filter.id_dst_mask))
 709                         return 0;
 710         if ((xsinfo->id.proto^filter.xsinfo.id.proto)&filter.id_proto_mask)
 711                 return 0;
 712         if ((xsinfo->id.spi^filter.xsinfo.id.spi)&filter.id_spi_mask)
 713                 return 0;
 714         if ((xsinfo->mode^filter.xsinfo.mode)&filter.mode_mask)
 715                 return 0;
 716         if ((xsinfo->reqid^filter.xsinfo.reqid)&filter.reqid_mask)
 717                 return 0;
 718         if (filter.state_flags_mask)
 719                 if ((xsinfo->flags & filter.xsinfo.flags) == 0)
 720                         return 0;
 721
 722         return 1;
 723 }
 724
 725 int xfrm_state_print(const struct sockaddr_nl *who, struct nlmsghdr *n,
 726                      void *arg)
 727 {
 728         FILE *fp = (FILE*)arg;
 729         struct rtattr * tb[XFRMA_MAX+1];
 730         struct rtattr * rta;
 731         struct xfrm_usersa_info *xsinfo = NULL;
 732         struct xfrm_user_expire *xexp = NULL;
 733         struct xfrm_usersa_id   *xsid = NULL;
 734         int len = n->nlmsg_len;
 735
 736         if (n->nlmsg_type != XFRM_MSG_NEWSA &&
 737             n->nlmsg_type != XFRM_MSG_DELSA &&
 738             n->nlmsg_type != XFRM_MSG_UPDSA &&
 739             n->nlmsg_type != XFRM_MSG_EXPIRE) {
 740                 fprintf(stderr, "Not a state: %08x %08x %08x\n",
 741                         n->nlmsg_len, n->nlmsg_type, n->nlmsg_flags);
 742                 return 0;
 743         }
 744
 745         if (n->nlmsg_type == XFRM_MSG_DELSA) {
 746                 /* Dont blame me for this .. Herbert made me do it */
 747                 xsid = NLMSG_DATA(n);
 748                 len -= NLMSG_SPACE(sizeof(*xsid));
 749         } else if (n->nlmsg_type == XFRM_MSG_EXPIRE) {
 750                 xexp = NLMSG_DATA(n);
 751                 xsinfo = &xexp->state;
 752                 len -= NLMSG_SPACE(sizeof(*xexp));
 753         } else {
 754                 xexp = NULL;
 755                 xsinfo = NLMSG_DATA(n);
 756                 len -= NLMSG_SPACE(sizeof(*xsinfo));
 757         }
 758
 759         if (len < 0) {
 760                 fprintf(stderr, "BUG: wrong nlmsg len %d\n", len);
 761                 return -1;
 762         }
 763
 764         if (xsinfo && !xfrm_state_filter_match(xsinfo))
 765                 return 0;
 766
 767         if (n->nlmsg_type == XFRM_MSG_DELSA)
 768                 fprintf(fp, "Deleted ");
 769         else if (n->nlmsg_type == XFRM_MSG_UPDSA)
 770                 fprintf(fp, "Updated ");
 771         else if (n->nlmsg_type == XFRM_MSG_EXPIRE)
 772                 fprintf(fp, "Expired ");
 773
 774         if (n->nlmsg_type == XFRM_MSG_DELSA)
 775                 rta = XFRMSID_RTA(xsid);
 776         else if (n->nlmsg_type == XFRM_MSG_EXPIRE)
 777                 rta = XFRMEXP_RTA(xexp);
 778         else
 779                 rta = XFRMS_RTA(xsinfo);
 780
 781         parse_rtattr(tb, XFRMA_MAX, rta, len);
 782
 783         if (n->nlmsg_type == XFRM_MSG_DELSA) {
 784                 //xfrm_policy_id_print();
 785
 786                 if (!tb[XFRMA_SA]) {
 787                         fprintf(stderr, "Buggy XFRM_MSG_DELSA: no XFRMA_SA\n");
 788                         return -1;
 789                 }
 790                 if (RTA_PAYLOAD(tb[XFRMA_SA]) < sizeof(*xsinfo)) {
 791                         fprintf(stderr, "Buggy XFRM_MSG_DELPOLICY: too short XFRMA_POLICY len\n");
 792                         return -1;
 793                 }
 794                 xsinfo = RTA_DATA(tb[XFRMA_SA]);
 795         }
 796
 797         xfrm_state_info_print(xsinfo, tb, fp, NULL, NULL);
 798
 799         if (n->nlmsg_type == XFRM_MSG_EXPIRE) {
 800                 fprintf(fp, "\t");
 801                 fprintf(fp, "hard %u", xexp->hard);
 802                 fprintf(fp, "%s", _SL_);
 803         }
 804
 805         if (oneline)
 806                 fprintf(fp, "\n");
 807         fflush(fp);
 808
 809         return 0;
 810 }
 811
 812 static int xfrm_state_get_or_delete(int argc, char **argv, int delete)
 813 {
 814         struct rtnl_handle rth;
 815         struct {
 816                 struct nlmsghdr         n;
 817                 struct xfrm_usersa_id   xsid;
 818                 char                    buf[RTA_BUF_SIZE];
 819         } req;
 820         struct xfrm_id id;
 821         char *idp = NULL;
 822         struct xfrm_mark mark = {0, 0};
 823
 824         memset(&req, 0, sizeof(req));
 825
 826         req.n.nlmsg_len = NLMSG_LENGTH(sizeof(req.xsid));
 827         req.n.nlmsg_flags = NLM_F_REQUEST;
 828         req.n.nlmsg_type = delete ? XFRM_MSG_DELSA : XFRM_MSG_GETSA;
 829         req.xsid.family = preferred_family;
 830
 831         while (argc > 0) {
 832                 xfrm_address_t saddr;
 833
 834                 if (strcmp(*argv, "mark") == 0) {
 835                         xfrm_parse_mark(&mark, &argc, &argv);
 836                 } else {
 837                         if (idp)
 838                                 invarg("unknown", *argv);
 839                         idp = *argv;
 840
 841                         /* ID */
 842                         memset(&id, 0, sizeof(id));
 843                         memset(&saddr, 0, sizeof(saddr));
 844                         xfrm_id_parse(&saddr, &id, &req.xsid.family, 0,
 845                                       &argc, &argv);
 846
 847                         memcpy(&req.xsid.daddr, &id.daddr, sizeof(req.xsid.daddr));
 848                         req.xsid.spi = id.spi;
 849                         req.xsid.proto = id.proto;
 850
 851                         addattr_l(&req.n, sizeof(req.buf), XFRMA_SRCADDR,
 852                                   (void *)&saddr, sizeof(saddr));
 853                 }
 854
 855                 argc--; argv++;
 856         }
 857
 858         if (mark.m & mark.v) {
 859                 int r = addattr_l(&req.n, sizeof(req.buf), XFRMA_MARK,
 860                                   (void *)&mark, sizeof(mark));
 861                 if (r < 0) {
 862                         fprintf(stderr, "XFRMA_MARK failed\n");
 863                         exit(1);
 864                 }
 865         }
 866
 867         if (rtnl_open_byproto(&rth, 0, NETLINK_XFRM) < 0)
 868                 exit(1);
 869
 870         if (req.xsid.family == AF_UNSPEC)
 871                 req.xsid.family = AF_INET;
 872
 873         if (delete) {
 874                 if (rtnl_talk(&rth, &req.n, 0, 0, NULL) < 0)
 875                         exit(2);
 876         } else {
 877                 char buf[NLMSG_BUF_SIZE];
 878                 struct nlmsghdr *res_n = (struct nlmsghdr *)buf;
 879
 880                 memset(buf, 0, sizeof(buf));
 881
 882                 if (rtnl_talk(&rth, &req.n, 0, 0, res_n) < 0)
 883                         exit(2);
 884
 885                 if (xfrm_state_print(NULL, res_n, (void*)stdout) < 0) {
 886                         fprintf(stderr, "An error :-)\n");
 887                         exit(1);
 888                 }
 889         }
 890
 891         rtnl_close(&rth);
 892
 893         return 0;
 894 }
 895
 896 /*
 897  * With an existing state of nlmsg, make new nlmsg for deleting the state
 898  * and store it to buffer.
 899  */
 900 static int xfrm_state_keep(const struct sockaddr_nl *who,
 901                            struct nlmsghdr *n,
 902                            void *arg)
 903 {
 904         struct xfrm_buffer *xb = (struct xfrm_buffer *)arg;
 905         struct rtnl_handle *rth = xb->rth;
 906         struct xfrm_usersa_info *xsinfo = NLMSG_DATA(n);
 907         int len = n->nlmsg_len;
 908         struct nlmsghdr *new_n;
 909         struct xfrm_usersa_id *xsid;
 910
 911         if (n->nlmsg_type != XFRM_MSG_NEWSA) {
 912                 fprintf(stderr, "Not a state: %08x %08x %08x\n",
 913                         n->nlmsg_len, n->nlmsg_type, n->nlmsg_flags);
 914                 return 0;
 915         }
 916
 917         len -= NLMSG_LENGTH(sizeof(*xsinfo));
 918         if (len < 0) {
 919                 fprintf(stderr, "BUG: wrong nlmsg len %d\n", len);
 920                 return -1;
 921         }
 922
 923         if (!xfrm_state_filter_match(xsinfo))
 924                 return 0;
 925
 926         if (xb->offset > xb->size) {
 927                 fprintf(stderr, "State buffer overflow\n");
 928                 return -1;
 929         }
 930
 931         new_n = (struct nlmsghdr *)(xb->buf + xb->offset);
 932         new_n->nlmsg_len = NLMSG_LENGTH(sizeof(*xsid));
 933         new_n->nlmsg_flags = NLM_F_REQUEST;
 934         new_n->nlmsg_type = XFRM_MSG_DELSA;
 935         new_n->nlmsg_seq = ++rth->seq;
 936
 937         xsid = NLMSG_DATA(new_n);
 938         xsid->family = xsinfo->family;
 939         memcpy(&xsid->daddr, &xsinfo->id.daddr, sizeof(xsid->daddr));
 940         xsid->spi = xsinfo->id.spi;
 941         xsid->proto = xsinfo->id.proto;
 942
 943         addattr_l(new_n, xb->size, XFRMA_SRCADDR, &xsinfo->saddr,
 944                   sizeof(xsid->daddr));
 945
 946         xb->offset += new_n->nlmsg_len;
 947         xb->nlmsg_count ++;
 948
 949         return 0;
 950 }
 951
 952 static int xfrm_state_list_or_deleteall(int argc, char **argv, int deleteall)
 953 {
 954         char *idp = NULL;
 955         struct rtnl_handle rth;
 956
 957         if(argc > 0)
 958                 filter.use = 1;
 959         filter.xsinfo.family = preferred_family;
 960
 961         while (argc > 0) {
 962                 if (strcmp(*argv, "mode") == 0) {
 963                         NEXT_ARG();
 964                         xfrm_mode_parse(&filter.xsinfo.mode, &argc, &argv);
 965
 966                         filter.mode_mask = XFRM_FILTER_MASK_FULL;
 967
 968                 } else if (strcmp(*argv, "reqid") == 0) {
 969                         NEXT_ARG();
 970                         xfrm_reqid_parse(&filter.xsinfo.reqid, &argc, &argv);
 971
 972                         filter.reqid_mask = XFRM_FILTER_MASK_FULL;
 973
 974                 } else if (strcmp(*argv, "flag") == 0) {
 975                         NEXT_ARG();
 976                         xfrm_state_flag_parse(&filter.xsinfo.flags, &argc, &argv);
 977
 978                         filter.state_flags_mask = XFRM_FILTER_MASK_FULL;
 979
 980                 } else {
 981                         if (idp)
 982                                 invarg("unknown", *argv);
 983                         idp = *argv;
 984
 985                         /* ID */
 986                         xfrm_id_parse(&filter.xsinfo.saddr, &filter.xsinfo.id,
 987                                       &filter.xsinfo.family, 1, &argc, &argv);
 988                         if (preferred_family == AF_UNSPEC)
 989                                 preferred_family = filter.xsinfo.family;
 990                 }
 991                 argc--; argv++;
 992         }
 993
 994         if (rtnl_open_byproto(&rth, 0, NETLINK_XFRM) < 0)
 995                 exit(1);
 996
 997         if (deleteall) {
 998                 struct xfrm_buffer xb;
 999                 char buf[NLMSG_DELETEALL_BUF_SIZE];
1000                 int i;
1001
1002                 xb.buf = buf;
1003                 xb.size = sizeof(buf);
1004                 xb.rth = &rth;
1005
1006                 for (i = 0; ; i++) {
1007                         xb.offset = 0;
1008                         xb.nlmsg_count = 0;
1009
1010                         if (show_stats > 1)
1011                                 fprintf(stderr, "Delete-all round = %d\n", i);
1012
1013                         if (rtnl_wilddump_request(&rth, preferred_family, XFRM_MSG_GETSA) < 0) {
1014                                 perror("Cannot send dump request");
1015                                 exit(1);
1016                         }
1017
1018                         if (rtnl_dump_filter(&rth, xfrm_state_keep, &xb) < 0) {
1019                                 fprintf(stderr, "Delete-all terminated\n");
1020                                 exit(1);
1021                         }
1022                         if (xb.nlmsg_count == 0) {
1023                                 if (show_stats > 1)
1024                                         fprintf(stderr, "Delete-all completed\n");
1025                                 break;
1026                         }
1027
1028                         if (rtnl_send_check(&rth, xb.buf, xb.offset) < 0) {
1029                                 perror("Failed to send delete-all request\n");
1030                                 exit(1);
1031                         }
1032                         if (show_stats > 1)
1033                                 fprintf(stderr, "Delete-all nlmsg count = %d\n", xb.nlmsg_count);
1034
1035                         xb.offset = 0;
1036                         xb.nlmsg_count = 0;
1037                 }
1038
1039         } else {
1040                 if (rtnl_wilddump_request(&rth, preferred_family, XFRM_MSG_GETSA) < 0) {
1041                         perror("Cannot send dump request");
1042                         exit(1);
1043                 }
1044
1045                 if (rtnl_dump_filter(&rth, xfrm_state_print, stdout) < 0) {
1046                         fprintf(stderr, "Dump terminated\n");
1047                         exit(1);
1048                 }
1049         }
1050
1051         rtnl_close(&rth);
1052
1053         exit(0);
1054 }
1055
1056 static int print_sadinfo(struct nlmsghdr *n, void *arg)
1057 {
1058         FILE *fp = (FILE*)arg;
1059         __u32 *f = NLMSG_DATA(n);
1060         struct rtattr *tb[XFRMA_SAD_MAX+1];
1061         struct rtattr *rta;
1062         __u32 *cnt;
1063
1064         int len = n->nlmsg_len;
1065
1066         len -= NLMSG_LENGTH(sizeof(__u32));
1067         if (len < 0) {
1068                 fprintf(stderr, "SADinfo: Wrong len %d\n", len);
1069                 return -1;
1070         }
1071
1072         rta = XFRMSAPD_RTA(f);
1073         parse_rtattr(tb, XFRMA_SAD_MAX, rta, len);
1074
1075         if (tb[XFRMA_SAD_CNT]) {
1076                 fprintf(fp,"\t SAD");
1077                 cnt = (__u32 *)RTA_DATA(tb[XFRMA_SAD_CNT]);
1078                 fprintf(fp," count %d", *cnt);
1079         } else {
1080                 fprintf(fp,"BAD SAD info returned\n");
1081                 return -1;
1082         }
1083
1084         if (show_stats) {
1085                 if (tb[XFRMA_SAD_HINFO]) {
1086                         struct xfrmu_sadhinfo *si;
1087
1088                         if (RTA_PAYLOAD(tb[XFRMA_SAD_HINFO]) < sizeof(*si)) {
1089                                 fprintf(fp,"BAD SAD length returned\n");
1090                                 return -1;
1091                         }
1092
1093                         si = RTA_DATA(tb[XFRMA_SAD_HINFO]);
1094                         fprintf(fp," (buckets ");
1095                         fprintf(fp,"count %d", si->sadhcnt);
1096                         fprintf(fp," Max %d", si->sadhmcnt);
1097                         fprintf(fp,")");
1098                 }
1099         }
1100         fprintf(fp,"\n");
1101
1102         return 0;
1103 }
1104
1105 static int xfrm_sad_getinfo(int argc, char **argv)
1106 {
1107         struct rtnl_handle rth;
1108         struct {
1109                 struct nlmsghdr                 n;
1110                 __u32                           flags;
1111                 char                            ans[64];
1112         } req;
1113
1114         memset(&req, 0, sizeof(req));
1115         req.n.nlmsg_len = NLMSG_LENGTH(sizeof(req.flags));
1116         req.n.nlmsg_flags = NLM_F_REQUEST;
1117         req.n.nlmsg_type = XFRM_MSG_GETSADINFO;
1118         req.flags = 0XFFFFFFFF;
1119
1120         if (rtnl_open_byproto(&rth, 0, NETLINK_XFRM) < 0)
1121                 exit(1);
1122
1123         if (rtnl_talk(&rth, &req.n, 0, 0, &req.n) < 0)
1124                 exit(2);
1125
1126         print_sadinfo(&req.n, (void*)stdout);
1127
1128         rtnl_close(&rth);
1129
1130         return 0;
1131 }
1132
1133 static int xfrm_state_flush(int argc, char **argv)
1134 {
1135         struct rtnl_handle rth;
1136         struct {
1137                 struct nlmsghdr                 n;
1138                 struct xfrm_usersa_flush        xsf;
1139         } req;
1140         char *protop = NULL;
1141
1142         memset(&req, 0, sizeof(req));
1143
1144         req.n.nlmsg_len = NLMSG_LENGTH(sizeof(req.xsf));
1145         req.n.nlmsg_flags = NLM_F_REQUEST;
1146         req.n.nlmsg_type = XFRM_MSG_FLUSHSA;
1147         req.xsf.proto = 0;
1148
1149         while (argc > 0) {
1150                 if (strcmp(*argv, "proto") == 0) {
1151                         int ret;
1152
1153                         if (protop)
1154                                 duparg("proto", *argv);
1155                         protop = *argv;
1156
1157                         NEXT_ARG();
1158
1159                         ret = xfrm_xfrmproto_getbyname(*argv);
1160                         if (ret < 0)
1161                                 invarg("\"XFRM-PROTO\" is invalid", *argv);
1162
1163                         req.xsf.proto = (__u8)ret;
1164                 } else
1165                         invarg("unknown", *argv);
1166
1167                 argc--; argv++;
1168         }
1169
1170         if (rtnl_open_byproto(&rth, 0, NETLINK_XFRM) < 0)
1171                 exit(1);
1172
1173         if (show_stats > 1)
1174                 fprintf(stderr, "Flush state proto=%s\n",
1175                         strxf_xfrmproto(req.xsf.proto));
1176
1177         if (rtnl_talk(&rth, &req.n, 0, 0, NULL) < 0)
1178                 exit(2);
1179
1180         rtnl_close(&rth);
1181
1182         return 0;
1183 }
1184
1185 int do_xfrm_state(int argc, char **argv)
1186 {
1187         if (argc < 1)
1188                 return xfrm_state_list_or_deleteall(0, NULL, 0);
1189
1190         if (matches(*argv, "add") == 0)
1191                 return xfrm_state_modify(XFRM_MSG_NEWSA, 0,
1192                                          argc-1, argv+1);
1193         if (matches(*argv, "update") == 0)
1194                 return xfrm_state_modify(XFRM_MSG_UPDSA, 0,
1195                                          argc-1, argv+1);
1196         if (matches(*argv, "allocspi") == 0)
1197                 return xfrm_state_allocspi(argc-1, argv+1);
1198         if (matches(*argv, "delete") == 0)
1199                 return xfrm_state_get_or_delete(argc-1, argv+1, 1);
1200         if (matches(*argv, "deleteall") == 0 || matches(*argv, "delall") == 0)
1201                 return xfrm_state_list_or_deleteall(argc-1, argv+1, 1);
1202         if (matches(*argv, "list") == 0 || matches(*argv, "show") == 0
1203             || matches(*argv, "lst") == 0)
1204                 return xfrm_state_list_or_deleteall(argc-1, argv+1, 0);
1205         if (matches(*argv, "get") == 0)
1206                 return xfrm_state_get_or_delete(argc-1, argv+1, 0);
1207         if (matches(*argv, "flush") == 0)
1208                 return xfrm_state_flush(argc-1, argv+1);
1209         if (matches(*argv, "count") == 0) {
1210                 return xfrm_sad_getinfo(argc, argv);
1211         }
1212         if (matches(*argv, "help") == 0)
1213                 usage();
1214         fprintf(stderr, "Command \"%s\" is unknown, try \"ip xfrm state help\".\n", *argv);
1215         exit(-1);
1216 }