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                         preferred_family = AF_UNSPEC;
 298                         xfrm_selector_parse(&req.xsinfo.sel, &argc, &argv);
 299                         preferred_family = req.xsinfo.sel.family;
 300                 } else if (strcmp(*argv, "limit") == 0) {
 301                         NEXT_ARG();
 302                         xfrm_lifetime_cfg_parse(&req.xsinfo.lft, &argc, &argv);
 303                 } else if (strcmp(*argv, "encap") == 0) {
 304                         struct xfrm_encap_tmpl encap;
 305                         inet_prefix oa;
 306                         NEXT_ARG();
 307                         xfrm_encap_type_parse(&encap.encap_type, &argc, &argv);
 308                         NEXT_ARG();
 309                         if (get_u16(&encap.encap_sport, *argv, 0))
 310                                 invarg("\"encap\" sport value is invalid", *argv);
 311                         encap.encap_sport = htons(encap.encap_sport);
 312                         NEXT_ARG();
 313                         if (get_u16(&encap.encap_dport, *argv, 0))
 314                                 invarg("\"encap\" dport value is invalid", *argv);
 315                         encap.encap_dport = htons(encap.encap_dport);
 316                         NEXT_ARG();
 317                         get_addr(&oa, *argv, AF_UNSPEC);
 318                         memcpy(&encap.encap_oa, &oa.data, sizeof(encap.encap_oa));
 319                         addattr_l(&req.n, sizeof(req.buf), XFRMA_ENCAP,
 320                                   (void *)&encap, sizeof(encap));
 321                 } else if (strcmp(*argv, "coa") == 0) {
 322                         inet_prefix coa;
 323                         xfrm_address_t xcoa;
 324
 325                         if (coap)
 326                                 duparg("coa", *argv);
 327                         coap = *argv;
 328
 329                         NEXT_ARG();
 330
 331                         get_prefix(&coa, *argv, preferred_family);
 332                         if (coa.family == AF_UNSPEC)
 333                                 invarg("\"coa\" address family is AF_UNSPEC", *argv);
 334                         if (coa.bytelen > sizeof(xcoa))
 335                                 invarg("\"coa\" address length is too large", *argv);
 336
 337                         memset(&xcoa, 0, sizeof(xcoa));
 338                         memcpy(&xcoa, &coa.data, coa.bytelen);
 339
 340                         addattr_l(&req.n, sizeof(req.buf), XFRMA_COADDR,
 341                                   (void *)&xcoa, sizeof(xcoa));
 342                 } else if (strcmp(*argv, "ctx") == 0) {
 343                         char *context;
 344
 345                         if (sctxp)
 346                                 duparg("ctx", *argv);
 347                         sctxp = *argv;
 348
 349                         NEXT_ARG();
 350                         context = *argv;
 351
 352                         xfrm_sctx_parse((char *)&ctx.str, context, &ctx.sctx);
 353                         addattr_l(&req.n, sizeof(req.buf), XFRMA_SEC_CTX,
 354                                   (void *)&ctx, ctx.sctx.len);
 355                 } else {
 356                         /* try to assume ALGO */
 357                         int type = xfrm_algotype_getbyname(*argv);
 358                         switch (type) {
 359                         case XFRMA_ALG_AEAD:
 360                         case XFRMA_ALG_CRYPT:
 361                         case XFRMA_ALG_AUTH:
 362                         case XFRMA_ALG_AUTH_TRUNC:
 363                         case XFRMA_ALG_COMP:
 364                         {
 365                                 /* ALGO */
 366                                 struct {
 367                                         union {
 368                                                 struct xfrm_algo alg;
 369                                                 struct xfrm_algo_aead aead;
 370                                                 struct xfrm_algo_auth auth;
 371                                         } u;
 372                                         char buf[XFRM_ALGO_KEY_BUF_SIZE];
 373                                 } alg = {};
 374                                 int len;
 375                                 __u32 icvlen, trunclen;
 376                                 char *name;
 377                                 char *key;
 378                                 char *buf;
 379
 380                                 switch (type) {
 381                                 case XFRMA_ALG_AEAD:
 382                                         if (ealgop || aalgop || aeadop)
 383                                                 duparg("ALGO-TYPE", *argv);
 384                                         aeadop = *argv;
 385                                         break;
 386                                 case XFRMA_ALG_CRYPT:
 387                                         if (ealgop || aeadop)
 388                                                 duparg("ALGO-TYPE", *argv);
 389                                         ealgop = *argv;
 390                                         break;
 391                                 case XFRMA_ALG_AUTH:
 392                                 case XFRMA_ALG_AUTH_TRUNC:
 393                                         if (aalgop || aeadop)
 394                                                 duparg("ALGO-TYPE", *argv);
 395                                         aalgop = *argv;
 396                                         break;
 397                                 case XFRMA_ALG_COMP:
 398                                         if (calgop)
 399                                                 duparg("ALGO-TYPE", *argv);
 400                                         calgop = *argv;
 401                                         break;
 402                                 default:
 403                                         /* not reached */
 404                                         invarg("\"ALGO-TYPE\" is invalid\n", *argv);
 405                                 }
 406
 407                                 if (!NEXT_ARG_OK())
 408                                         missarg("ALGO-NAME");
 409                                 NEXT_ARG();
 410                                 name = *argv;
 411
 412                                 if (!NEXT_ARG_OK())
 413                                         missarg("ALGO-KEY");
 414                                 NEXT_ARG();
 415                                 key = *argv;
 416
 417                                 buf = alg.u.alg.alg_key;
 418                                 len = sizeof(alg.u.alg);
 419
 420                                 switch (type) {
 421                                 case XFRMA_ALG_AEAD:
 422                                         if (!NEXT_ARG_OK())
 423                                                 missarg("ALGO-ICV-LEN");
 424                                         NEXT_ARG();
 425                                         if (get_u32(&icvlen, *argv, 0))
 426                                                 invarg("\"aead\" ICV length is invalid",
 427                                                        *argv);
 428                                         alg.u.aead.alg_icv_len = icvlen;
 429
 430                                         buf = alg.u.aead.alg_key;
 431                                         len = sizeof(alg.u.aead);
 432                                         break;
 433                                 case XFRMA_ALG_AUTH_TRUNC:
 434                                         if (!NEXT_ARG_OK())
 435                                                 missarg("ALGO-TRUNC-LEN");
 436                                         NEXT_ARG();
 437                                         if (get_u32(&trunclen, *argv, 0))
 438                                                 invarg("\"auth\" trunc length is invalid",
 439                                                        *argv);
 440                                         alg.u.auth.alg_trunc_len = trunclen;
 441
 442                                         buf = alg.u.auth.alg_key;
 443                                         len = sizeof(alg.u.auth);
 444                                         break;
 445                                 }
 446
 447                                 xfrm_algo_parse((void *)&alg, type, name, key,
 448                                                 buf, sizeof(alg.buf));
 449                                 len += alg.u.alg.alg_key_len;
 450
 451                                 addattr_l(&req.n, sizeof(req.buf), type,
 452                                           (void *)&alg, len);
 453                                 break;
 454                         }
 455                         default:
 456                                 /* try to assume ID */
 457                                 if (idp)
 458                                         invarg("unknown", *argv);
 459                                 idp = *argv;
 460
 461                                 /* ID */
 462                                 xfrm_id_parse(&req.xsinfo.saddr, &req.xsinfo.id,
 463                                               &req.xsinfo.family, 0, &argc, &argv);
 464                                 if (preferred_family == AF_UNSPEC)
 465                                         preferred_family = req.xsinfo.family;
 466                         }
 467                 }
 468                 argc--; argv++;
 469         }
 470
 471         if (replay.seq || replay.oseq)
 472                 addattr_l(&req.n, sizeof(req.buf), XFRMA_REPLAY_VAL,
 473                           (void *)&replay, sizeof(replay));
 474
 475         if (!idp) {
 476                 fprintf(stderr, "Not enough information: \"ID\" is required\n");
 477                 exit(1);
 478         }
 479
 480         if (mark.m & mark.v) {
 481                 int r = addattr_l(&req.n, sizeof(req.buf), XFRMA_MARK,
 482                                   (void *)&mark, sizeof(mark));
 483                 if (r < 0) {
 484                         fprintf(stderr, "XFRMA_MARK failed\n");
 485                         exit(1);
 486                 }
 487         }
 488
 489         switch (req.xsinfo.mode) {
 490         case XFRM_MODE_TRANSPORT:
 491         case XFRM_MODE_TUNNEL:
 492                 if (!xfrm_xfrmproto_is_ipsec(req.xsinfo.id.proto)) {
 493                         fprintf(stderr, "\"mode\" is invalid with proto=%s\n",
 494                                 strxf_xfrmproto(req.xsinfo.id.proto));
 495                         exit(1);
 496                 }
 497                 break;
 498         case XFRM_MODE_ROUTEOPTIMIZATION:
 499         case XFRM_MODE_IN_TRIGGER:
 500                 if (!xfrm_xfrmproto_is_ro(req.xsinfo.id.proto)) {
 501                         fprintf(stderr, "\"mode\" is invalid with proto=%s\n",
 502                                 strxf_xfrmproto(req.xsinfo.id.proto));
 503                         exit(1);
 504                 }
 505                 break;
 506         default:
 507                 break;
 508         }
 509
 510         if (aeadop || ealgop || aalgop || calgop) {
 511                 if (!xfrm_xfrmproto_is_ipsec(req.xsinfo.id.proto)) {
 512                         fprintf(stderr, "\"ALGO\" is invalid with proto=%s\n",
 513                                 strxf_xfrmproto(req.xsinfo.id.proto));
 514                         exit(1);
 515                 }
 516         } else {
 517                 if (xfrm_xfrmproto_is_ipsec(req.xsinfo.id.proto)) {
 518                         fprintf(stderr, "\"ALGO\" is required with proto=%s\n",
 519                                 strxf_xfrmproto(req.xsinfo.id.proto));
 520                         exit (1);
 521                 }
 522         }
 523
 524         if (coap) {
 525                 if (!xfrm_xfrmproto_is_ro(req.xsinfo.id.proto)) {
 526                         fprintf(stderr, "\"coa\" is invalid with proto=%s\n",
 527                                 strxf_xfrmproto(req.xsinfo.id.proto));
 528                         exit(1);
 529                 }
 530         } else {
 531                 if (xfrm_xfrmproto_is_ro(req.xsinfo.id.proto)) {
 532                         fprintf(stderr, "\"coa\" is required with proto=%s\n",
 533                                 strxf_xfrmproto(req.xsinfo.id.proto));
 534                         exit (1);
 535                 }
 536         }
 537
 538         if (rtnl_open_byproto(&rth, 0, NETLINK_XFRM) < 0)
 539                 exit(1);
 540
 541         if (req.xsinfo.family == AF_UNSPEC)
 542                 req.xsinfo.family = AF_INET;
 543
 544         if (rtnl_talk(&rth, &req.n, 0, 0, NULL) < 0)
 545                 exit(2);
 546
 547         rtnl_close(&rth);
 548
 549         return 0;
 550 }
 551
 552 static int xfrm_state_allocspi(int argc, char **argv)
 553 {
 554         struct rtnl_handle rth;
 555         struct {
 556                 struct nlmsghdr         n;
 557                 struct xfrm_userspi_info xspi;
 558                 char                    buf[RTA_BUF_SIZE];
 559         } req;
 560         char *idp = NULL;
 561         char *minp = NULL;
 562         char *maxp = NULL;
 563         struct xfrm_mark mark = {0, 0};
 564         char res_buf[NLMSG_BUF_SIZE];
 565         struct nlmsghdr *res_n = (struct nlmsghdr *)res_buf;
 566
 567         memset(res_buf, 0, sizeof(res_buf));
 568
 569         memset(&req, 0, sizeof(req));
 570
 571         req.n.nlmsg_len = NLMSG_LENGTH(sizeof(req.xspi));
 572         req.n.nlmsg_flags = NLM_F_REQUEST;
 573         req.n.nlmsg_type = XFRM_MSG_ALLOCSPI;
 574         req.xspi.info.family = preferred_family;
 575
 576 #if 0
 577         req.xsinfo.lft.soft_byte_limit = XFRM_INF;
 578         req.xsinfo.lft.hard_byte_limit = XFRM_INF;
 579         req.xsinfo.lft.soft_packet_limit = XFRM_INF;
 580         req.xsinfo.lft.hard_packet_limit = XFRM_INF;
 581 #endif
 582
 583         while (argc > 0) {
 584                 if (strcmp(*argv, "mode") == 0) {
 585                         NEXT_ARG();
 586                         xfrm_mode_parse(&req.xspi.info.mode, &argc, &argv);
 587                 } else if (strcmp(*argv, "mark") == 0) {
 588                         xfrm_parse_mark(&mark, &argc, &argv);
 589                 } else if (strcmp(*argv, "reqid") == 0) {
 590                         NEXT_ARG();
 591                         xfrm_reqid_parse(&req.xspi.info.reqid, &argc, &argv);
 592                 } else if (strcmp(*argv, "seq") == 0) {
 593                         NEXT_ARG();
 594                         xfrm_seq_parse(&req.xspi.info.seq, &argc, &argv);
 595                 } else if (strcmp(*argv, "min") == 0) {
 596                         if (minp)
 597                                 duparg("min", *argv);
 598                         minp = *argv;
 599
 600                         NEXT_ARG();
 601
 602                         if (get_u32(&req.xspi.min, *argv, 0))
 603                                 invarg("\"min\" value is invalid", *argv);
 604                 } else if (strcmp(*argv, "max") == 0) {
 605                         if (maxp)
 606                                 duparg("max", *argv);
 607                         maxp = *argv;
 608
 609                         NEXT_ARG();
 610
 611                         if (get_u32(&req.xspi.max, *argv, 0))
 612                                 invarg("\"max\" value is invalid", *argv);
 613                 } else {
 614                         /* try to assume ID */
 615                         if (idp)
 616                                 invarg("unknown", *argv);
 617                         idp = *argv;
 618
 619                         /* ID */
 620                         xfrm_id_parse(&req.xspi.info.saddr, &req.xspi.info.id,
 621                                       &req.xspi.info.family, 0, &argc, &argv);
 622                         if (req.xspi.info.id.spi) {
 623                                 fprintf(stderr, "\"SPI\" must be zero\n");
 624                                 exit(1);
 625                         }
 626                         if (preferred_family == AF_UNSPEC)
 627                                 preferred_family = req.xspi.info.family;
 628                 }
 629                 argc--; argv++;
 630         }
 631
 632         if (!idp) {
 633                 fprintf(stderr, "Not enough information: \"ID\" is required\n");
 634                 exit(1);
 635         }
 636
 637         if (minp) {
 638                 if (!maxp) {
 639                         fprintf(stderr, "\"max\" is missing\n");
 640                         exit(1);
 641                 }
 642                 if (req.xspi.min > req.xspi.max) {
 643                         fprintf(stderr, "\"min\" value is larger than \"max\" value\n");
 644                         exit(1);
 645                 }
 646         } else {
 647                 if (maxp) {
 648                         fprintf(stderr, "\"min\" is missing\n");
 649                         exit(1);
 650                 }
 651
 652                 /* XXX: Default value defined in PF_KEY;
 653                  * See kernel's net/key/af_key.c(pfkey_getspi).
 654                  */
 655                 req.xspi.min = 0x100;
 656                 req.xspi.max = 0x0fffffff;
 657
 658                 /* XXX: IPCOMP spi is 16-bits;
 659                  * See kernel's net/xfrm/xfrm_user(verify_userspi_info).
 660                  */
 661                 if (req.xspi.info.id.proto == IPPROTO_COMP)
 662                         req.xspi.max = 0xffff;
 663         }
 664
 665         if (mark.m & mark.v) {
 666                 int r = addattr_l(&req.n, sizeof(req.buf), XFRMA_MARK,
 667                                   (void *)&mark, sizeof(mark));
 668                 if (r < 0) {
 669                         fprintf(stderr, "XFRMA_MARK failed\n");
 670                         exit(1);
 671                 }
 672         }
 673
 674         if (rtnl_open_byproto(&rth, 0, NETLINK_XFRM) < 0)
 675                 exit(1);
 676
 677         if (req.xspi.info.family == AF_UNSPEC)
 678                 req.xspi.info.family = AF_INET;
 679
 680
 681         if (rtnl_talk(&rth, &req.n, 0, 0, res_n) < 0)
 682                 exit(2);
 683
 684         if (xfrm_state_print(NULL, res_n, (void*)stdout) < 0) {
 685                 fprintf(stderr, "An error :-)\n");
 686                 exit(1);
 687         }
 688
 689         rtnl_close(&rth);
 690
 691         return 0;
 692 }
 693
 694 static int xfrm_state_filter_match(struct xfrm_usersa_info *xsinfo)
 695 {
 696         if (!filter.use)
 697                 return 1;
 698
 699         if (filter.id_src_mask)
 700                 if (xfrm_addr_match(&xsinfo->saddr, &filter.xsinfo.saddr,
 701                                     filter.id_src_mask))
 702                         return 0;
 703         if (filter.id_dst_mask)
 704                 if (xfrm_addr_match(&xsinfo->id.daddr, &filter.xsinfo.id.daddr,
 705                                     filter.id_dst_mask))
 706                         return 0;
 707         if ((xsinfo->id.proto^filter.xsinfo.id.proto)&filter.id_proto_mask)
 708                 return 0;
 709         if ((xsinfo->id.spi^filter.xsinfo.id.spi)&filter.id_spi_mask)
 710                 return 0;
 711         if ((xsinfo->mode^filter.xsinfo.mode)&filter.mode_mask)
 712                 return 0;
 713         if ((xsinfo->reqid^filter.xsinfo.reqid)&filter.reqid_mask)
 714                 return 0;
 715         if (filter.state_flags_mask)
 716                 if ((xsinfo->flags & filter.xsinfo.flags) == 0)
 717                         return 0;
 718
 719         return 1;
 720 }
 721
 722 int xfrm_state_print(const struct sockaddr_nl *who, struct nlmsghdr *n,
 723                      void *arg)
 724 {
 725         FILE *fp = (FILE*)arg;
 726         struct rtattr * tb[XFRMA_MAX+1];
 727         struct rtattr * rta;
 728         struct xfrm_usersa_info *xsinfo = NULL;
 729         struct xfrm_user_expire *xexp = NULL;
 730         struct xfrm_usersa_id   *xsid = NULL;
 731         int len = n->nlmsg_len;
 732
 733         if (n->nlmsg_type != XFRM_MSG_NEWSA &&
 734             n->nlmsg_type != XFRM_MSG_DELSA &&
 735             n->nlmsg_type != XFRM_MSG_UPDSA &&
 736             n->nlmsg_type != XFRM_MSG_EXPIRE) {
 737                 fprintf(stderr, "Not a state: %08x %08x %08x\n",
 738                         n->nlmsg_len, n->nlmsg_type, n->nlmsg_flags);
 739                 return 0;
 740         }
 741
 742         if (n->nlmsg_type == XFRM_MSG_DELSA) {
 743                 /* Dont blame me for this .. Herbert made me do it */
 744                 xsid = NLMSG_DATA(n);
 745                 len -= NLMSG_SPACE(sizeof(*xsid));
 746         } else if (n->nlmsg_type == XFRM_MSG_EXPIRE) {
 747                 xexp = NLMSG_DATA(n);
 748                 xsinfo = &xexp->state;
 749                 len -= NLMSG_SPACE(sizeof(*xexp));
 750         } else {
 751                 xexp = NULL;
 752                 xsinfo = NLMSG_DATA(n);
 753                 len -= NLMSG_SPACE(sizeof(*xsinfo));
 754         }
 755
 756         if (len < 0) {
 757                 fprintf(stderr, "BUG: wrong nlmsg len %d\n", len);
 758                 return -1;
 759         }
 760
 761         if (xsinfo && !xfrm_state_filter_match(xsinfo))
 762                 return 0;
 763
 764         if (n->nlmsg_type == XFRM_MSG_DELSA)
 765                 fprintf(fp, "Deleted ");
 766         else if (n->nlmsg_type == XFRM_MSG_UPDSA)
 767                 fprintf(fp, "Updated ");
 768         else if (n->nlmsg_type == XFRM_MSG_EXPIRE)
 769                 fprintf(fp, "Expired ");
 770
 771         if (n->nlmsg_type == XFRM_MSG_DELSA)
 772                 rta = XFRMSID_RTA(xsid);
 773         else if (n->nlmsg_type == XFRM_MSG_EXPIRE)
 774                 rta = XFRMEXP_RTA(xexp);
 775         else
 776                 rta = XFRMS_RTA(xsinfo);
 777
 778         parse_rtattr(tb, XFRMA_MAX, rta, len);
 779
 780         if (n->nlmsg_type == XFRM_MSG_DELSA) {
 781                 //xfrm_policy_id_print();
 782
 783                 if (!tb[XFRMA_SA]) {
 784                         fprintf(stderr, "Buggy XFRM_MSG_DELSA: no XFRMA_SA\n");
 785                         return -1;
 786                 }
 787                 if (RTA_PAYLOAD(tb[XFRMA_SA]) < sizeof(*xsinfo)) {
 788                         fprintf(stderr, "Buggy XFRM_MSG_DELPOLICY: too short XFRMA_POLICY len\n");
 789                         return -1;
 790                 }
 791                 xsinfo = RTA_DATA(tb[XFRMA_SA]);
 792         }
 793
 794         xfrm_state_info_print(xsinfo, tb, fp, NULL, NULL);
 795
 796         if (n->nlmsg_type == XFRM_MSG_EXPIRE) {
 797                 fprintf(fp, "\t");
 798                 fprintf(fp, "hard %u", xexp->hard);
 799                 fprintf(fp, "%s", _SL_);
 800         }
 801
 802         if (oneline)
 803                 fprintf(fp, "\n");
 804         fflush(fp);
 805
 806         return 0;
 807 }
 808
 809 static int xfrm_state_get_or_delete(int argc, char **argv, int delete)
 810 {
 811         struct rtnl_handle rth;
 812         struct {
 813                 struct nlmsghdr         n;
 814                 struct xfrm_usersa_id   xsid;
 815                 char                    buf[RTA_BUF_SIZE];
 816         } req;
 817         struct xfrm_id id;
 818         char *idp = NULL;
 819         struct xfrm_mark mark = {0, 0};
 820
 821         memset(&req, 0, sizeof(req));
 822
 823         req.n.nlmsg_len = NLMSG_LENGTH(sizeof(req.xsid));
 824         req.n.nlmsg_flags = NLM_F_REQUEST;
 825         req.n.nlmsg_type = delete ? XFRM_MSG_DELSA : XFRM_MSG_GETSA;
 826         req.xsid.family = preferred_family;
 827
 828         while (argc > 0) {
 829                 xfrm_address_t saddr;
 830
 831                 if (strcmp(*argv, "mark") == 0) {
 832                         xfrm_parse_mark(&mark, &argc, &argv);
 833                 } else {
 834                         if (idp)
 835                                 invarg("unknown", *argv);
 836                         idp = *argv;
 837
 838                         /* ID */
 839                         memset(&id, 0, sizeof(id));
 840                         memset(&saddr, 0, sizeof(saddr));
 841                         xfrm_id_parse(&saddr, &id, &req.xsid.family, 0,
 842                                       &argc, &argv);
 843
 844                         memcpy(&req.xsid.daddr, &id.daddr, sizeof(req.xsid.daddr));
 845                         req.xsid.spi = id.spi;
 846                         req.xsid.proto = id.proto;
 847
 848                         addattr_l(&req.n, sizeof(req.buf), XFRMA_SRCADDR,
 849                                   (void *)&saddr, sizeof(saddr));
 850                 }
 851
 852                 argc--; argv++;
 853         }
 854
 855         if (mark.m & mark.v) {
 856                 int r = addattr_l(&req.n, sizeof(req.buf), XFRMA_MARK,
 857                                   (void *)&mark, sizeof(mark));
 858                 if (r < 0) {
 859                         fprintf(stderr, "XFRMA_MARK failed\n");
 860                         exit(1);
 861                 }
 862         }
 863
 864         if (rtnl_open_byproto(&rth, 0, NETLINK_XFRM) < 0)
 865                 exit(1);
 866
 867         if (req.xsid.family == AF_UNSPEC)
 868                 req.xsid.family = AF_INET;
 869
 870         if (delete) {
 871                 if (rtnl_talk(&rth, &req.n, 0, 0, NULL) < 0)
 872                         exit(2);
 873         } else {
 874                 char buf[NLMSG_BUF_SIZE];
 875                 struct nlmsghdr *res_n = (struct nlmsghdr *)buf;
 876
 877                 memset(buf, 0, sizeof(buf));
 878
 879                 if (rtnl_talk(&rth, &req.n, 0, 0, res_n) < 0)
 880                         exit(2);
 881
 882                 if (xfrm_state_print(NULL, res_n, (void*)stdout) < 0) {
 883                         fprintf(stderr, "An error :-)\n");
 884                         exit(1);
 885                 }
 886         }
 887
 888         rtnl_close(&rth);
 889
 890         return 0;
 891 }
 892
 893 /*
 894  * With an existing state of nlmsg, make new nlmsg for deleting the state
 895  * and store it to buffer.
 896  */
 897 static int xfrm_state_keep(const struct sockaddr_nl *who,
 898                            struct nlmsghdr *n,
 899                            void *arg)
 900 {
 901         struct xfrm_buffer *xb = (struct xfrm_buffer *)arg;
 902         struct rtnl_handle *rth = xb->rth;
 903         struct xfrm_usersa_info *xsinfo = NLMSG_DATA(n);
 904         int len = n->nlmsg_len;
 905         struct nlmsghdr *new_n;
 906         struct xfrm_usersa_id *xsid;
 907
 908         if (n->nlmsg_type != XFRM_MSG_NEWSA) {
 909                 fprintf(stderr, "Not a state: %08x %08x %08x\n",
 910                         n->nlmsg_len, n->nlmsg_type, n->nlmsg_flags);
 911                 return 0;
 912         }
 913
 914         len -= NLMSG_LENGTH(sizeof(*xsinfo));
 915         if (len < 0) {
 916                 fprintf(stderr, "BUG: wrong nlmsg len %d\n", len);
 917                 return -1;
 918         }
 919
 920         if (!xfrm_state_filter_match(xsinfo))
 921                 return 0;
 922
 923         if (xb->offset > xb->size) {
 924                 fprintf(stderr, "State buffer overflow\n");
 925                 return -1;
 926         }
 927
 928         new_n = (struct nlmsghdr *)(xb->buf + xb->offset);
 929         new_n->nlmsg_len = NLMSG_LENGTH(sizeof(*xsid));
 930         new_n->nlmsg_flags = NLM_F_REQUEST;
 931         new_n->nlmsg_type = XFRM_MSG_DELSA;
 932         new_n->nlmsg_seq = ++rth->seq;
 933
 934         xsid = NLMSG_DATA(new_n);
 935         xsid->family = xsinfo->family;
 936         memcpy(&xsid->daddr, &xsinfo->id.daddr, sizeof(xsid->daddr));
 937         xsid->spi = xsinfo->id.spi;
 938         xsid->proto = xsinfo->id.proto;
 939
 940         addattr_l(new_n, xb->size, XFRMA_SRCADDR, &xsinfo->saddr,
 941                   sizeof(xsid->daddr));
 942
 943         xb->offset += new_n->nlmsg_len;
 944         xb->nlmsg_count ++;
 945
 946         return 0;
 947 }
 948
 949 static int xfrm_state_list_or_deleteall(int argc, char **argv, int deleteall)
 950 {
 951         char *idp = NULL;
 952         struct rtnl_handle rth;
 953
 954         if(argc > 0)
 955                 filter.use = 1;
 956         filter.xsinfo.family = preferred_family;
 957
 958         while (argc > 0) {
 959                 if (strcmp(*argv, "mode") == 0) {
 960                         NEXT_ARG();
 961                         xfrm_mode_parse(&filter.xsinfo.mode, &argc, &argv);
 962
 963                         filter.mode_mask = XFRM_FILTER_MASK_FULL;
 964
 965                 } else if (strcmp(*argv, "reqid") == 0) {
 966                         NEXT_ARG();
 967                         xfrm_reqid_parse(&filter.xsinfo.reqid, &argc, &argv);
 968
 969                         filter.reqid_mask = XFRM_FILTER_MASK_FULL;
 970
 971                 } else if (strcmp(*argv, "flag") == 0) {
 972                         NEXT_ARG();
 973                         xfrm_state_flag_parse(&filter.xsinfo.flags, &argc, &argv);
 974
 975                         filter.state_flags_mask = XFRM_FILTER_MASK_FULL;
 976
 977                 } else {
 978                         if (idp)
 979                                 invarg("unknown", *argv);
 980                         idp = *argv;
 981
 982                         /* ID */
 983                         xfrm_id_parse(&filter.xsinfo.saddr, &filter.xsinfo.id,
 984                                       &filter.xsinfo.family, 1, &argc, &argv);
 985                         if (preferred_family == AF_UNSPEC)
 986                                 preferred_family = filter.xsinfo.family;
 987                 }
 988                 argc--; argv++;
 989         }
 990
 991         if (rtnl_open_byproto(&rth, 0, NETLINK_XFRM) < 0)
 992                 exit(1);
 993
 994         if (deleteall) {
 995                 struct xfrm_buffer xb;
 996                 char buf[NLMSG_DELETEALL_BUF_SIZE];
 997                 int i;
 998
 999                 xb.buf = buf;
1000                 xb.size = sizeof(buf);
1001                 xb.rth = &rth;
1002
1003                 for (i = 0; ; i++) {
1004                         xb.offset = 0;
1005                         xb.nlmsg_count = 0;
1006
1007                         if (show_stats > 1)
1008                                 fprintf(stderr, "Delete-all round = %d\n", i);
1009
1010                         if (rtnl_wilddump_request(&rth, preferred_family, XFRM_MSG_GETSA) < 0) {
1011                                 perror("Cannot send dump request");
1012                                 exit(1);
1013                         }
1014
1015                         if (rtnl_dump_filter(&rth, xfrm_state_keep, &xb) < 0) {
1016                                 fprintf(stderr, "Delete-all terminated\n");
1017                                 exit(1);
1018                         }
1019                         if (xb.nlmsg_count == 0) {
1020                                 if (show_stats > 1)
1021                                         fprintf(stderr, "Delete-all completed\n");
1022                                 break;
1023                         }
1024
1025                         if (rtnl_send_check(&rth, xb.buf, xb.offset) < 0) {
1026                                 perror("Failed to send delete-all request\n");
1027                                 exit(1);
1028                         }
1029                         if (show_stats > 1)
1030                                 fprintf(stderr, "Delete-all nlmsg count = %d\n", xb.nlmsg_count);
1031
1032                         xb.offset = 0;
1033                         xb.nlmsg_count = 0;
1034                 }
1035
1036         } else {
1037                 if (rtnl_wilddump_request(&rth, preferred_family, XFRM_MSG_GETSA) < 0) {
1038                         perror("Cannot send dump request");
1039                         exit(1);
1040                 }
1041
1042                 if (rtnl_dump_filter(&rth, xfrm_state_print, stdout) < 0) {
1043                         fprintf(stderr, "Dump terminated\n");
1044                         exit(1);
1045                 }
1046         }
1047
1048         rtnl_close(&rth);
1049
1050         exit(0);
1051 }
1052
1053 static int print_sadinfo(struct nlmsghdr *n, void *arg)
1054 {
1055         FILE *fp = (FILE*)arg;
1056         __u32 *f = NLMSG_DATA(n);
1057         struct rtattr *tb[XFRMA_SAD_MAX+1];
1058         struct rtattr *rta;
1059         __u32 *cnt;
1060
1061         int len = n->nlmsg_len;
1062
1063         len -= NLMSG_LENGTH(sizeof(__u32));
1064         if (len < 0) {
1065                 fprintf(stderr, "SADinfo: Wrong len %d\n", len);
1066                 return -1;
1067         }
1068
1069         rta = XFRMSAPD_RTA(f);
1070         parse_rtattr(tb, XFRMA_SAD_MAX, rta, len);
1071
1072         if (tb[XFRMA_SAD_CNT]) {
1073                 fprintf(fp,"\t SAD");
1074                 cnt = (__u32 *)RTA_DATA(tb[XFRMA_SAD_CNT]);
1075                 fprintf(fp," count %d", *cnt);
1076         } else {
1077                 fprintf(fp,"BAD SAD info returned\n");
1078                 return -1;
1079         }
1080
1081         if (show_stats) {
1082                 if (tb[XFRMA_SAD_HINFO]) {
1083                         struct xfrmu_sadhinfo *si;
1084
1085                         if (RTA_PAYLOAD(tb[XFRMA_SAD_HINFO]) < sizeof(*si)) {
1086                                 fprintf(fp,"BAD SAD length returned\n");
1087                                 return -1;
1088                         }
1089
1090                         si = RTA_DATA(tb[XFRMA_SAD_HINFO]);
1091                         fprintf(fp," (buckets ");
1092                         fprintf(fp,"count %d", si->sadhcnt);
1093                         fprintf(fp," Max %d", si->sadhmcnt);
1094                         fprintf(fp,")");
1095                 }
1096         }
1097         fprintf(fp,"\n");
1098
1099         return 0;
1100 }
1101
1102 static int xfrm_sad_getinfo(int argc, char **argv)
1103 {
1104         struct rtnl_handle rth;
1105         struct {
1106                 struct nlmsghdr                 n;
1107                 __u32                           flags;
1108                 char                            ans[64];
1109         } req;
1110
1111         memset(&req, 0, sizeof(req));
1112         req.n.nlmsg_len = NLMSG_LENGTH(sizeof(req.flags));
1113         req.n.nlmsg_flags = NLM_F_REQUEST;
1114         req.n.nlmsg_type = XFRM_MSG_GETSADINFO;
1115         req.flags = 0XFFFFFFFF;
1116
1117         if (rtnl_open_byproto(&rth, 0, NETLINK_XFRM) < 0)
1118                 exit(1);
1119
1120         if (rtnl_talk(&rth, &req.n, 0, 0, &req.n) < 0)
1121                 exit(2);
1122
1123         print_sadinfo(&req.n, (void*)stdout);
1124
1125         rtnl_close(&rth);
1126
1127         return 0;
1128 }
1129
1130 static int xfrm_state_flush(int argc, char **argv)
1131 {
1132         struct rtnl_handle rth;
1133         struct {
1134                 struct nlmsghdr                 n;
1135                 struct xfrm_usersa_flush        xsf;
1136         } req;
1137         char *protop = NULL;
1138
1139         memset(&req, 0, sizeof(req));
1140
1141         req.n.nlmsg_len = NLMSG_LENGTH(sizeof(req.xsf));
1142         req.n.nlmsg_flags = NLM_F_REQUEST;
1143         req.n.nlmsg_type = XFRM_MSG_FLUSHSA;
1144         req.xsf.proto = 0;
1145
1146         while (argc > 0) {
1147                 if (strcmp(*argv, "proto") == 0) {
1148                         int ret;
1149
1150                         if (protop)
1151                                 duparg("proto", *argv);
1152                         protop = *argv;
1153
1154                         NEXT_ARG();
1155
1156                         ret = xfrm_xfrmproto_getbyname(*argv);
1157                         if (ret < 0)
1158                                 invarg("\"XFRM-PROTO\" is invalid", *argv);
1159
1160                         req.xsf.proto = (__u8)ret;
1161                 } else
1162                         invarg("unknown", *argv);
1163
1164                 argc--; argv++;
1165         }
1166
1167         if (rtnl_open_byproto(&rth, 0, NETLINK_XFRM) < 0)
1168                 exit(1);
1169
1170         if (show_stats > 1)
1171                 fprintf(stderr, "Flush state proto=%s\n",
1172                         strxf_xfrmproto(req.xsf.proto));
1173
1174         if (rtnl_talk(&rth, &req.n, 0, 0, NULL) < 0)
1175                 exit(2);
1176
1177         rtnl_close(&rth);
1178
1179         return 0;
1180 }
1181
1182 int do_xfrm_state(int argc, char **argv)
1183 {
1184         if (argc < 1)
1185                 return xfrm_state_list_or_deleteall(0, NULL, 0);
1186
1187         if (matches(*argv, "add") == 0)
1188                 return xfrm_state_modify(XFRM_MSG_NEWSA, 0,
1189                                          argc-1, argv+1);
1190         if (matches(*argv, "update") == 0)
1191                 return xfrm_state_modify(XFRM_MSG_UPDSA, 0,
1192                                          argc-1, argv+1);
1193         if (matches(*argv, "allocspi") == 0)
1194                 return xfrm_state_allocspi(argc-1, argv+1);
1195         if (matches(*argv, "delete") == 0)
1196                 return xfrm_state_get_or_delete(argc-1, argv+1, 1);
1197         if (matches(*argv, "deleteall") == 0 || matches(*argv, "delall") == 0)
1198                 return xfrm_state_list_or_deleteall(argc-1, argv+1, 1);
1199         if (matches(*argv, "list") == 0 || matches(*argv, "show") == 0
1200             || matches(*argv, "lst") == 0)
1201                 return xfrm_state_list_or_deleteall(argc-1, argv+1, 0);
1202         if (matches(*argv, "get") == 0)
1203                 return xfrm_state_get_or_delete(argc-1, argv+1, 0);
1204         if (matches(*argv, "flush") == 0)
1205                 return xfrm_state_flush(argc-1, argv+1);
1206         if (matches(*argv, "count") == 0) {
1207                 return xfrm_sad_getinfo(argc, argv);
1208         }
1209         if (matches(*argv, "help") == 0)
1210                 usage();
1211         fprintf(stderr, "Command \"%s\" is unknown, try \"ip xfrm state help\".\n", *argv);
1212         exit(-1);
1213 }