ip/xfrm_policy.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, see <http://www.gnu.org/licenses>.
  18  */
  19 /*
  20  * based on iproute.c
  21  */
  22 /*
  23  * Authors:
  24  *      Masahide NAKAMURA @USAGI
  25  */
  26
  27 #include <stdio.h>
  28 #include <stdlib.h>
  29 #include <string.h>
  30 #include <netdb.h>
  31 #include <linux/netlink.h>
  32 #include "utils.h"
  33 #include "xfrm.h"
  34 #include "ip_common.h"
  35
  36 /* #define NLMSG_DELETEALL_BUF_SIZE (4096-512) */
  37 #define NLMSG_DELETEALL_BUF_SIZE 8192
  38
  39 /*
  40  * Receiving buffer defines:
  41  * nlmsg
  42  *   data = struct xfrm_userpolicy_info
  43  *   rtattr
  44  *     data = struct xfrm_user_tmpl[]
  45  */
  46 #define NLMSG_BUF_SIZE 4096
  47 #define RTA_BUF_SIZE 2048
  48 #define XFRM_TMPLS_BUF_SIZE 1024
  49 #define CTX_BUF_SIZE 256
  50
  51 static void usage(void) __attribute__((noreturn));
  52
  53 static void usage(void)
  54 {
  55         fprintf(stderr, "Usage: ip xfrm policy { add | update } SELECTOR dir DIR [ ctx CTX ]\n");
  56         fprintf(stderr, "        [ mark MARK [ mask MASK ] ] [ index INDEX ] [ ptype PTYPE ]\n");
  57         fprintf(stderr, "        [ action ACTION ] [ priority PRIORITY ] [ flag FLAG-LIST ]\n");
  58         fprintf(stderr, "        [ LIMIT-LIST ] [ TMPL-LIST ]\n");
  59         fprintf(stderr, "Usage: ip xfrm policy { delete | get } { SELECTOR | index INDEX } dir DIR\n");
  60         fprintf(stderr, "        [ ctx CTX ] [ mark MARK [ mask MASK ] ] [ ptype PTYPE ]\n");
  61         fprintf(stderr, "Usage: ip xfrm policy { deleteall | list } [ nosock ] [ SELECTOR ] [ dir DIR ]\n");
  62         fprintf(stderr, "        [ index INDEX ] [ ptype PTYPE ] [ action ACTION ] [ priority PRIORITY ]\n");
  63         fprintf(stderr, "        [ flag FLAG-LIST ]\n");
  64         fprintf(stderr, "Usage: ip xfrm policy flush [ ptype PTYPE ]\n");
  65         fprintf(stderr, "Usage: ip xfrm policy count\n");
  66         fprintf(stderr, "Usage: ip xfrm policy set [ hthresh4 LBITS RBITS ] [ hthresh6 LBITS RBITS ]\n");
  67         fprintf(stderr, "SELECTOR := [ src ADDR[/PLEN] ] [ dst ADDR[/PLEN] ] [ dev DEV ] [ UPSPEC ]\n");
  68         fprintf(stderr, "UPSPEC := proto { { ");
  69         fprintf(stderr, "%s | ", strxf_proto(IPPROTO_TCP));
  70         fprintf(stderr, "%s | ", strxf_proto(IPPROTO_UDP));
  71         fprintf(stderr, "%s | ", strxf_proto(IPPROTO_SCTP));
  72         fprintf(stderr, "%s", strxf_proto(IPPROTO_DCCP));
  73         fprintf(stderr, " } [ sport PORT ] [ dport PORT ] |\n");
  74         fprintf(stderr, "                  { ");
  75         fprintf(stderr, "%s | ", strxf_proto(IPPROTO_ICMP));
  76         fprintf(stderr, "%s | ", strxf_proto(IPPROTO_ICMPV6));
  77         fprintf(stderr, "%s", strxf_proto(IPPROTO_MH));
  78         fprintf(stderr, " } [ type NUMBER ] [ code NUMBER ] |\n");
  79         fprintf(stderr, "                  %s", strxf_proto(IPPROTO_GRE));
  80         fprintf(stderr, " [ key { DOTTED-QUAD | NUMBER } ] | PROTO }\n");
  81         fprintf(stderr, "DIR := in | out | fwd\n");
  82         fprintf(stderr, "PTYPE := main | sub\n");
  83         fprintf(stderr, "ACTION := allow | block\n");
  84         fprintf(stderr, "FLAG-LIST := [ FLAG-LIST ] FLAG\n");
  85         fprintf(stderr, "FLAG := localok | icmp\n");
  86         fprintf(stderr, "LIMIT-LIST := [ LIMIT-LIST ] limit LIMIT\n");
  87         fprintf(stderr, "LIMIT := { time-soft | time-hard | time-use-soft | time-use-hard } SECONDS |\n");
  88         fprintf(stderr, "         { byte-soft | byte-hard } SIZE | { packet-soft | packet-hard } COUNT\n");
  89         fprintf(stderr, "TMPL-LIST := [ TMPL-LIST ] tmpl TMPL\n");
  90         fprintf(stderr, "TMPL := ID [ mode MODE ] [ reqid REQID ] [ level LEVEL ]\n");
  91         fprintf(stderr, "ID := [ src ADDR ] [ dst ADDR ] [ proto XFRM-PROTO ] [ spi SPI ]\n");
  92         fprintf(stderr, "XFRM-PROTO := ");
  93         fprintf(stderr, "%s | ", strxf_xfrmproto(IPPROTO_ESP));
  94         fprintf(stderr, "%s | ", strxf_xfrmproto(IPPROTO_AH));
  95         fprintf(stderr, "%s | ", strxf_xfrmproto(IPPROTO_COMP));
  96         fprintf(stderr, "%s | ", strxf_xfrmproto(IPPROTO_ROUTING));
  97         fprintf(stderr, "%s\n", strxf_xfrmproto(IPPROTO_DSTOPTS));
  98         fprintf(stderr, "MODE := transport | tunnel | beet | ro | in_trigger\n");
  99         fprintf(stderr, "LEVEL := required | use\n");
 100
 101         exit(-1);
 102 }
 103
 104 static int xfrm_policy_dir_parse(__u8 *dir, int *argcp, char ***argvp)
 105 {
 106         int argc = *argcp;
 107         char **argv = *argvp;
 108
 109         if (strcmp(*argv, "in") == 0)
 110                 *dir = XFRM_POLICY_IN;
 111         else if (strcmp(*argv, "out") == 0)
 112                 *dir = XFRM_POLICY_OUT;
 113         else if (strcmp(*argv, "fwd") == 0)
 114                 *dir = XFRM_POLICY_FWD;
 115         else
 116                 invarg("DIR value is invalid", *argv);
 117
 118         *argcp = argc;
 119         *argvp = argv;
 120
 121         return 0;
 122 }
 123
 124 static int xfrm_policy_ptype_parse(__u8 *ptype, int *argcp, char ***argvp)
 125 {
 126         int argc = *argcp;
 127         char **argv = *argvp;
 128
 129         if (strcmp(*argv, "main") == 0)
 130                 *ptype = XFRM_POLICY_TYPE_MAIN;
 131         else if (strcmp(*argv, "sub") == 0)
 132                 *ptype = XFRM_POLICY_TYPE_SUB;
 133         else
 134                 invarg("PTYPE value is invalid", *argv);
 135
 136         *argcp = argc;
 137         *argvp = argv;
 138
 139         return 0;
 140 }
 141
 142 static int xfrm_policy_flag_parse(__u8 *flags, int *argcp, char ***argvp)
 143 {
 144         int argc = *argcp;
 145         char **argv = *argvp;
 146         int len = strlen(*argv);
 147
 148         if (len > 2 && strncmp(*argv, "0x", 2) == 0) {
 149                 __u8 val = 0;
 150
 151                 if (get_u8(&val, *argv, 16))
 152                         invarg("FLAG value is invalid", *argv);
 153                 *flags = val;
 154         } else {
 155                 while (1) {
 156                         if (strcmp(*argv, "localok") == 0)
 157                                 *flags |= XFRM_POLICY_LOCALOK;
 158                         else if (strcmp(*argv, "icmp") == 0)
 159                                 *flags |= XFRM_POLICY_ICMP;
 160                         else {
 161                                 PREV_ARG(); /* back track */
 162                                 break;
 163                         }
 164
 165                         if (!NEXT_ARG_OK())
 166                                 break;
 167                         NEXT_ARG();
 168                 }
 169         }
 170
 171         *argcp = argc;
 172         *argvp = argv;
 173
 174         return 0;
 175 }
 176
 177 static int xfrm_tmpl_parse(struct xfrm_user_tmpl *tmpl,
 178                            int *argcp, char ***argvp)
 179 {
 180         int argc = *argcp;
 181         char **argv = *argvp;
 182         char *idp = NULL;
 183
 184         while (1) {
 185                 if (strcmp(*argv, "mode") == 0) {
 186                         NEXT_ARG();
 187                         xfrm_mode_parse(&tmpl->mode,  &argc, &argv);
 188                 } else if (strcmp(*argv, "reqid") == 0) {
 189                         NEXT_ARG();
 190                         xfrm_reqid_parse(&tmpl->reqid, &argc, &argv);
 191                 } else if (strcmp(*argv, "level") == 0) {
 192                         NEXT_ARG();
 193
 194                         if (strcmp(*argv, "required") == 0)
 195                                 tmpl->optional = 0;
 196                         else if (strcmp(*argv, "use") == 0)
 197                                 tmpl->optional = 1;
 198                         else
 199                                 invarg("LEVEL value is invalid\n", *argv);
 200
 201                 } else {
 202                         if (idp) {
 203                                 PREV_ARG(); /* back track */
 204                                 break;
 205                         }
 206                         idp = *argv;
 207                         preferred_family = AF_UNSPEC;
 208                         xfrm_id_parse(&tmpl->saddr, &tmpl->id, &tmpl->family,
 209                                       0, &argc, &argv);
 210                         preferred_family = tmpl->family;
 211                 }
 212
 213                 if (!NEXT_ARG_OK())
 214                         break;
 215
 216                 NEXT_ARG();
 217         }
 218         if (argc == *argcp)
 219                 missarg("TMPL");
 220
 221         *argcp = argc;
 222         *argvp = argv;
 223
 224         return 0;
 225 }
 226
 227 int xfrm_sctx_parse(char *ctxstr, char *s,
 228                            struct xfrm_user_sec_ctx *sctx)
 229 {
 230         int slen;
 231
 232         slen = strlen(s) + 1;
 233
 234         sctx->exttype = XFRMA_SEC_CTX;
 235         sctx->ctx_doi = 1;
 236         sctx->ctx_alg = 1;
 237         sctx->ctx_len = slen;
 238         sctx->len = sizeof(struct xfrm_user_sec_ctx) + slen;
 239         memcpy(ctxstr, s, slen);
 240
 241         return 0;
 242 }
 243
 244 static int xfrm_policy_modify(int cmd, unsigned int flags, int argc, char **argv)
 245 {
 246         struct rtnl_handle rth;
 247         struct {
 248                 struct nlmsghdr                 n;
 249                 struct xfrm_userpolicy_info     xpinfo;
 250                 char                            buf[RTA_BUF_SIZE];
 251         } req = {
 252                 .n.nlmsg_len = NLMSG_LENGTH(sizeof(req.xpinfo)),
 253                 .n.nlmsg_flags = NLM_F_REQUEST | flags,
 254                 .n.nlmsg_type = cmd,
 255                 .xpinfo.sel.family = preferred_family,
 256                 .xpinfo.lft.soft_byte_limit = XFRM_INF,
 257                 .xpinfo.lft.hard_byte_limit = XFRM_INF,
 258                 .xpinfo.lft.soft_packet_limit = XFRM_INF,
 259                 .xpinfo.lft.hard_packet_limit = XFRM_INF,
 260         };
 261         char *dirp = NULL;
 262         char *selp = NULL;
 263         char *ptypep = NULL;
 264         char *sctxp = NULL;
 265         struct xfrm_userpolicy_type upt = {};
 266         char tmpls_buf[XFRM_TMPLS_BUF_SIZE] = {};
 267         int tmpls_len = 0;
 268         struct xfrm_mark mark = {0, 0};
 269         struct {
 270                 struct xfrm_user_sec_ctx sctx;
 271                 char    str[CTX_BUF_SIZE];
 272         } ctx = {};
 273
 274         while (argc > 0) {
 275                 if (strcmp(*argv, "dir") == 0) {
 276                         if (dirp)
 277                                 duparg("dir", *argv);
 278                         dirp = *argv;
 279
 280                         NEXT_ARG();
 281                         xfrm_policy_dir_parse(&req.xpinfo.dir, &argc, &argv);
 282                 } else if (strcmp(*argv, "ctx") == 0) {
 283                         char *context;
 284
 285                         if (sctxp)
 286                                 duparg("ctx", *argv);
 287                         sctxp = *argv;
 288                         NEXT_ARG();
 289                         context = *argv;
 290                         xfrm_sctx_parse((char *)&ctx.str, context, &ctx.sctx);
 291                 } else if (strcmp(*argv, "mark") == 0) {
 292                         xfrm_parse_mark(&mark, &argc, &argv);
 293                 } else if (strcmp(*argv, "index") == 0) {
 294                         NEXT_ARG();
 295                         if (get_u32(&req.xpinfo.index, *argv, 0))
 296                                 invarg("INDEX value is invalid", *argv);
 297                 } else if (strcmp(*argv, "ptype") == 0) {
 298                         if (ptypep)
 299                                 duparg("ptype", *argv);
 300                         ptypep = *argv;
 301
 302                         NEXT_ARG();
 303                         xfrm_policy_ptype_parse(&upt.type, &argc, &argv);
 304                 } else if (strcmp(*argv, "action") == 0) {
 305                         NEXT_ARG();
 306                         if (strcmp(*argv, "allow") == 0)
 307                                 req.xpinfo.action = XFRM_POLICY_ALLOW;
 308                         else if (strcmp(*argv, "block") == 0)
 309                                 req.xpinfo.action = XFRM_POLICY_BLOCK;
 310                         else
 311                                 invarg("ACTION value is invalid\n", *argv);
 312                 } else if (strcmp(*argv, "priority") == 0) {
 313                         NEXT_ARG();
 314                         if (get_u32(&req.xpinfo.priority, *argv, 0))
 315                                 invarg("PRIORITY value is invalid", *argv);
 316                 } else if (strcmp(*argv, "flag") == 0) {
 317                         NEXT_ARG();
 318                         xfrm_policy_flag_parse(&req.xpinfo.flags, &argc,
 319                                                &argv);
 320                 } else if (strcmp(*argv, "limit") == 0) {
 321                         NEXT_ARG();
 322                         xfrm_lifetime_cfg_parse(&req.xpinfo.lft, &argc, &argv);
 323                 } else if (strcmp(*argv, "tmpl") == 0) {
 324                         struct xfrm_user_tmpl *tmpl;
 325
 326                         if (tmpls_len + sizeof(*tmpl) > sizeof(tmpls_buf)) {
 327                                 fprintf(stderr, "Too many tmpls: buffer overflow\n");
 328                                 exit(1);
 329                         }
 330                         tmpl = (struct xfrm_user_tmpl *)((char *)tmpls_buf + tmpls_len);
 331
 332                         tmpl->family = preferred_family;
 333                         tmpl->aalgos = (~(__u32)0);
 334                         tmpl->ealgos = (~(__u32)0);
 335                         tmpl->calgos = (~(__u32)0);
 336
 337                         NEXT_ARG();
 338                         xfrm_tmpl_parse(tmpl, &argc, &argv);
 339
 340                         tmpls_len += sizeof(*tmpl);
 341                 } else {
 342                         if (selp)
 343                                 duparg("unknown", *argv);
 344                         selp = *argv;
 345
 346                         xfrm_selector_parse(&req.xpinfo.sel, &argc, &argv);
 347                         if (preferred_family == AF_UNSPEC)
 348                                 preferred_family = req.xpinfo.sel.family;
 349                 }
 350
 351                 argc--; argv++;
 352         }
 353
 354         if (!dirp) {
 355                 fprintf(stderr, "Not enough information: DIR is required.\n");
 356                 exit(1);
 357         }
 358
 359         if (ptypep) {
 360                 addattr_l(&req.n, sizeof(req), XFRMA_POLICY_TYPE,
 361                           (void *)&upt, sizeof(upt));
 362         }
 363
 364         if (tmpls_len > 0) {
 365                 addattr_l(&req.n, sizeof(req), XFRMA_TMPL,
 366                           (void *)tmpls_buf, tmpls_len);
 367         }
 368
 369         if (mark.m) {
 370                 int r = addattr_l(&req.n, sizeof(req.buf), XFRMA_MARK,
 371                                   (void *)&mark, sizeof(mark));
 372                 if (r < 0) {
 373                         fprintf(stderr, "%s: XFRMA_MARK failed\n", __func__);
 374                         exit(1);
 375                 }
 376         }
 377
 378         if (sctxp) {
 379                 addattr_l(&req.n, sizeof(req), XFRMA_SEC_CTX,
 380                           (void *)&ctx, ctx.sctx.len);
 381         }
 382
 383         if (rtnl_open_byproto(&rth, 0, NETLINK_XFRM) < 0)
 384                 exit(1);
 385
 386         if (req.xpinfo.sel.family == AF_UNSPEC)
 387                 req.xpinfo.sel.family = AF_INET;
 388
 389         if (rtnl_talk(&rth, &req.n, NULL) < 0)
 390                 exit(2);
 391
 392         rtnl_close(&rth);
 393
 394         return 0;
 395 }
 396
 397 static int xfrm_policy_filter_match(struct xfrm_userpolicy_info *xpinfo,
 398                                     __u8 ptype)
 399 {
 400         if (!filter.use)
 401                 return 1;
 402
 403         if ((xpinfo->dir^filter.xpinfo.dir)&filter.dir_mask)
 404                 return 0;
 405
 406         if (filter.filter_socket && (xpinfo->dir >= XFRM_POLICY_MAX))
 407                 return 0;
 408
 409         if ((ptype^filter.ptype)&filter.ptype_mask)
 410                 return 0;
 411
 412         if (filter.sel_src_mask) {
 413                 if (xfrm_addr_match(&xpinfo->sel.saddr, &filter.xpinfo.sel.saddr,
 414                                     filter.sel_src_mask))
 415                         return 0;
 416         }
 417
 418         if (filter.sel_dst_mask) {
 419                 if (xfrm_addr_match(&xpinfo->sel.daddr, &filter.xpinfo.sel.daddr,
 420                                     filter.sel_dst_mask))
 421                         return 0;
 422         }
 423
 424         if ((xpinfo->sel.ifindex^filter.xpinfo.sel.ifindex)&filter.sel_dev_mask)
 425                 return 0;
 426
 427         if ((xpinfo->sel.proto^filter.xpinfo.sel.proto)&filter.upspec_proto_mask)
 428                 return 0;
 429
 430         if (filter.upspec_sport_mask) {
 431                 if ((xpinfo->sel.sport^filter.xpinfo.sel.sport)&filter.upspec_sport_mask)
 432                         return 0;
 433         }
 434
 435         if (filter.upspec_dport_mask) {
 436                 if ((xpinfo->sel.dport^filter.xpinfo.sel.dport)&filter.upspec_dport_mask)
 437                         return 0;
 438         }
 439
 440         if ((xpinfo->index^filter.xpinfo.index)&filter.index_mask)
 441                 return 0;
 442
 443         if ((xpinfo->action^filter.xpinfo.action)&filter.action_mask)
 444                 return 0;
 445
 446         if ((xpinfo->priority^filter.xpinfo.priority)&filter.priority_mask)
 447                 return 0;
 448
 449         if (filter.policy_flags_mask)
 450                 if ((xpinfo->flags & filter.xpinfo.flags) == 0)
 451                         return 0;
 452
 453         return 1;
 454 }
 455
 456 int xfrm_policy_print(struct nlmsghdr *n, void *arg)
 457 {
 458         struct rtattr *tb[XFRMA_MAX+1];
 459         struct rtattr *rta;
 460         struct xfrm_userpolicy_info *xpinfo = NULL;
 461         struct xfrm_user_polexpire *xpexp = NULL;
 462         struct xfrm_userpolicy_id *xpid = NULL;
 463         __u8 ptype = XFRM_POLICY_TYPE_MAIN;
 464         FILE *fp = (FILE *)arg;
 465         int len = n->nlmsg_len;
 466
 467         if (n->nlmsg_type != XFRM_MSG_NEWPOLICY &&
 468             n->nlmsg_type != XFRM_MSG_DELPOLICY &&
 469             n->nlmsg_type != XFRM_MSG_UPDPOLICY &&
 470             n->nlmsg_type != XFRM_MSG_POLEXPIRE) {
 471                 fprintf(stderr, "Not a policy: %08x %08x %08x\n",
 472                         n->nlmsg_len, n->nlmsg_type, n->nlmsg_flags);
 473                 return 0;
 474         }
 475
 476         if (n->nlmsg_type == XFRM_MSG_DELPOLICY)  {
 477                 xpid = NLMSG_DATA(n);
 478                 len -= NLMSG_SPACE(sizeof(*xpid));
 479         } else if (n->nlmsg_type == XFRM_MSG_POLEXPIRE) {
 480                 xpexp = NLMSG_DATA(n);
 481                 xpinfo = &xpexp->pol;
 482                 len -= NLMSG_SPACE(sizeof(*xpexp));
 483         } else {
 484                 xpexp = NULL;
 485                 xpinfo = NLMSG_DATA(n);
 486                 len -= NLMSG_SPACE(sizeof(*xpinfo));
 487         }
 488
 489         if (len < 0) {
 490                 fprintf(stderr, "BUG: wrong nlmsg len %d\n", len);
 491                 return -1;
 492         }
 493
 494         if (n->nlmsg_type == XFRM_MSG_DELPOLICY)
 495                 rta = XFRMPID_RTA(xpid);
 496         else if (n->nlmsg_type == XFRM_MSG_POLEXPIRE)
 497                 rta = XFRMPEXP_RTA(xpexp);
 498         else
 499                 rta = XFRMP_RTA(xpinfo);
 500
 501         parse_rtattr(tb, XFRMA_MAX, rta, len);
 502
 503         if (tb[XFRMA_POLICY_TYPE]) {
 504                 struct xfrm_userpolicy_type *upt;
 505
 506                 if (RTA_PAYLOAD(tb[XFRMA_POLICY_TYPE]) < sizeof(*upt)) {
 507                         fprintf(stderr, "too short XFRMA_POLICY_TYPE len\n");
 508                         return -1;
 509                 }
 510                 upt = RTA_DATA(tb[XFRMA_POLICY_TYPE]);
 511                 ptype = upt->type;
 512         }
 513
 514         if (xpinfo && !xfrm_policy_filter_match(xpinfo, ptype))
 515                 return 0;
 516
 517         if (n->nlmsg_type == XFRM_MSG_DELPOLICY)
 518                 fprintf(fp, "Deleted ");
 519         else if (n->nlmsg_type == XFRM_MSG_UPDPOLICY)
 520                 fprintf(fp, "Updated ");
 521         else if (n->nlmsg_type == XFRM_MSG_POLEXPIRE)
 522                 fprintf(fp, "Expired ");
 523
 524         if (n->nlmsg_type == XFRM_MSG_DELPOLICY) {
 525                 /* xfrm_policy_id_print(); */
 526                 if (!tb[XFRMA_POLICY]) {
 527                         fprintf(stderr, "Buggy XFRM_MSG_DELPOLICY: no XFRMA_POLICY\n");
 528                         return -1;
 529                 }
 530                 if (RTA_PAYLOAD(tb[XFRMA_POLICY]) < sizeof(*xpinfo)) {
 531                         fprintf(stderr, "Buggy XFRM_MSG_DELPOLICY: too short XFRMA_POLICY len\n");
 532                         return -1;
 533                 }
 534                 xpinfo = RTA_DATA(tb[XFRMA_POLICY]);
 535         }
 536
 537         xfrm_policy_info_print(xpinfo, tb, fp, NULL, NULL);
 538
 539         if (n->nlmsg_type == XFRM_MSG_POLEXPIRE) {
 540                 fprintf(fp, "\t");
 541                 fprintf(fp, "hard %u", xpexp->hard);
 542                 fprintf(fp, "%s", _SL_);
 543         }
 544
 545         if (oneline)
 546                 fprintf(fp, "\n");
 547         fflush(fp);
 548
 549         return 0;
 550 }
 551
 552 static int xfrm_policy_get_or_delete(int argc, char **argv, int delete,
 553                                      struct nlmsghdr **answer)
 554 {
 555         struct rtnl_handle rth;
 556         struct {
 557                 struct nlmsghdr                 n;
 558                 struct xfrm_userpolicy_id       xpid;
 559                 char                            buf[RTA_BUF_SIZE];
 560         } req = {
 561                 .n.nlmsg_len = NLMSG_LENGTH(sizeof(req.xpid)),
 562                 .n.nlmsg_flags = NLM_F_REQUEST,
 563                 .n.nlmsg_type = delete ? XFRM_MSG_DELPOLICY
 564                                        : XFRM_MSG_GETPOLICY,
 565         };
 566         char *dirp = NULL;
 567         char *selp = NULL;
 568         char *indexp = NULL;
 569         char *ptypep = NULL;
 570         char *sctxp = NULL;
 571         struct xfrm_userpolicy_type upt = {};
 572         struct xfrm_mark mark = {0, 0};
 573         struct {
 574                 struct xfrm_user_sec_ctx sctx;
 575                 char    str[CTX_BUF_SIZE];
 576         } ctx = {};
 577
 578         while (argc > 0) {
 579                 if (strcmp(*argv, "dir") == 0) {
 580                         if (dirp)
 581                                 duparg("dir", *argv);
 582                         dirp = *argv;
 583
 584                         NEXT_ARG();
 585                         xfrm_policy_dir_parse(&req.xpid.dir, &argc, &argv);
 586
 587                 } else if (strcmp(*argv, "ctx") == 0) {
 588                         char *context;
 589
 590                         if (sctxp)
 591                                 duparg("ctx", *argv);
 592                         sctxp = *argv;
 593                         NEXT_ARG();
 594                         context = *argv;
 595                         xfrm_sctx_parse((char *)&ctx.str, context, &ctx.sctx);
 596                 } else if (strcmp(*argv, "mark") == 0) {
 597                         xfrm_parse_mark(&mark, &argc, &argv);
 598                 } else if (strcmp(*argv, "index") == 0) {
 599                         if (indexp)
 600                                 duparg("index", *argv);
 601                         indexp = *argv;
 602
 603                         NEXT_ARG();
 604                         if (get_u32(&req.xpid.index, *argv, 0))
 605                                 invarg("INDEX value is invalid", *argv);
 606
 607                 } else if (strcmp(*argv, "ptype") == 0) {
 608                         if (ptypep)
 609                                 duparg("ptype", *argv);
 610                         ptypep = *argv;
 611
 612                         NEXT_ARG();
 613                         xfrm_policy_ptype_parse(&upt.type, &argc, &argv);
 614
 615                 } else {
 616                         if (selp)
 617                                 invarg("unknown", *argv);
 618                         selp = *argv;
 619
 620                         xfrm_selector_parse(&req.xpid.sel, &argc, &argv);
 621                         if (preferred_family == AF_UNSPEC)
 622                                 preferred_family = req.xpid.sel.family;
 623
 624                 }
 625
 626                 argc--; argv++;
 627         }
 628
 629         if (!dirp) {
 630                 fprintf(stderr, "Not enough information: DIR is required.\n");
 631                 exit(1);
 632         }
 633         if (ptypep) {
 634                 addattr_l(&req.n, sizeof(req), XFRMA_POLICY_TYPE,
 635                           (void *)&upt, sizeof(upt));
 636         }
 637         if (!selp && !indexp) {
 638                 fprintf(stderr, "Not enough information: either SELECTOR or INDEX is required.\n");
 639                 exit(1);
 640         }
 641         if (selp && indexp)
 642                 duparg2("SELECTOR", "INDEX");
 643
 644         if (rtnl_open_byproto(&rth, 0, NETLINK_XFRM) < 0)
 645                 exit(1);
 646
 647         if (req.xpid.sel.family == AF_UNSPEC)
 648                 req.xpid.sel.family = AF_INET;
 649
 650         if (mark.m & mark.v) {
 651                 int r = addattr_l(&req.n, sizeof(req.buf), XFRMA_MARK,
 652                                   (void *)&mark, sizeof(mark));
 653                 if (r < 0) {
 654                         fprintf(stderr, "%s: XFRMA_MARK failed\n", __func__);
 655                         exit(1);
 656                 }
 657         }
 658
 659         if (sctxp) {
 660                 addattr_l(&req.n, sizeof(req), XFRMA_SEC_CTX,
 661                           (void *)&ctx, ctx.sctx.len);
 662         }
 663
 664         if (rtnl_talk(&rth, &req.n, answer) < 0)
 665                 exit(2);
 666
 667         rtnl_close(&rth);
 668
 669         return 0;
 670 }
 671
 672 static int xfrm_policy_delete(int argc, char **argv)
 673 {
 674         return xfrm_policy_get_or_delete(argc, argv, 1, NULL);
 675 }
 676
 677 static int xfrm_policy_get(int argc, char **argv)
 678 {
 679         struct nlmsghdr *n = NULL;
 680
 681         xfrm_policy_get_or_delete(argc, argv, 0, &n);
 682
 683         if (xfrm_policy_print(n, (void *)stdout) < 0) {
 684                 fprintf(stderr, "An error :-)\n");
 685                 exit(1);
 686         }
 687
 688         free(n);
 689         return 0;
 690 }
 691
 692 /*
 693  * With an existing policy of nlmsg, make new nlmsg for deleting the policy
 694  * and store it to buffer.
 695  */
 696 static int xfrm_policy_keep(struct nlmsghdr *n, void *arg)
 697 {
 698         struct xfrm_buffer *xb = (struct xfrm_buffer *)arg;
 699         struct rtnl_handle *rth = xb->rth;
 700         struct xfrm_userpolicy_info *xpinfo = NLMSG_DATA(n);
 701         int len = n->nlmsg_len;
 702         struct rtattr *tb[XFRMA_MAX+1];
 703         __u8 ptype = XFRM_POLICY_TYPE_MAIN;
 704         struct nlmsghdr *new_n;
 705         struct xfrm_userpolicy_id *xpid;
 706
 707         if (n->nlmsg_type != XFRM_MSG_NEWPOLICY) {
 708                 fprintf(stderr, "Not a policy: %08x %08x %08x\n",
 709                         n->nlmsg_len, n->nlmsg_type, n->nlmsg_flags);
 710                 return 0;
 711         }
 712
 713         len -= NLMSG_LENGTH(sizeof(*xpinfo));
 714         if (len < 0) {
 715                 fprintf(stderr, "BUG: wrong nlmsg len %d\n", len);
 716                 return -1;
 717         }
 718
 719         parse_rtattr(tb, XFRMA_MAX, XFRMP_RTA(xpinfo), len);
 720
 721         if (tb[XFRMA_POLICY_TYPE]) {
 722                 struct xfrm_userpolicy_type *upt;
 723
 724                 if (RTA_PAYLOAD(tb[XFRMA_POLICY_TYPE]) < sizeof(*upt)) {
 725                         fprintf(stderr, "too short XFRMA_POLICY_TYPE len\n");
 726                         return -1;
 727                 }
 728                 upt = RTA_DATA(tb[XFRMA_POLICY_TYPE]);
 729                 ptype = upt->type;
 730         }
 731
 732         if (!xfrm_policy_filter_match(xpinfo, ptype))
 733                 return 0;
 734
 735         /* can't delete socket policies */
 736         if (xpinfo->dir >= XFRM_POLICY_MAX)
 737                 return 0;
 738
 739         if (xb->offset + NLMSG_LENGTH(sizeof(*xpid)) > xb->size)
 740                 return 0;
 741
 742         new_n = (struct nlmsghdr *)(xb->buf + xb->offset);
 743         new_n->nlmsg_len = NLMSG_LENGTH(sizeof(*xpid));
 744         new_n->nlmsg_flags = NLM_F_REQUEST;
 745         new_n->nlmsg_type = XFRM_MSG_DELPOLICY;
 746         new_n->nlmsg_seq = ++rth->seq;
 747
 748         xpid = NLMSG_DATA(new_n);
 749         memcpy(&xpid->sel, &xpinfo->sel, sizeof(xpid->sel));
 750         xpid->dir = xpinfo->dir;
 751         xpid->index = xpinfo->index;
 752
 753         if (tb[XFRMA_MARK]) {
 754                 int r = addattr_l(new_n, xb->size, XFRMA_MARK,
 755                                 (void *)RTA_DATA(tb[XFRMA_MARK]), tb[XFRMA_MARK]->rta_len);
 756                 if (r < 0) {
 757                         fprintf(stderr, "%s: XFRMA_MARK failed\n", __func__);
 758                         exit(1);
 759                 }
 760         }
 761
 762         xb->offset += new_n->nlmsg_len;
 763         xb->nlmsg_count++;
 764
 765         return 0;
 766 }
 767
 768 static int xfrm_policy_list_or_deleteall(int argc, char **argv, int deleteall)
 769 {
 770         char *selp = NULL;
 771         struct rtnl_handle rth;
 772
 773         if (argc > 0)
 774                 filter.use = 1;
 775         filter.xpinfo.sel.family = preferred_family;
 776
 777         while (argc > 0) {
 778                 if (strcmp(*argv, "dir") == 0) {
 779                         NEXT_ARG();
 780                         xfrm_policy_dir_parse(&filter.xpinfo.dir, &argc, &argv);
 781
 782                         filter.dir_mask = XFRM_FILTER_MASK_FULL;
 783
 784                 } else if (strcmp(*argv, "index") == 0) {
 785                         NEXT_ARG();
 786                         if (get_u32(&filter.xpinfo.index, *argv, 0))
 787                                 invarg("INDEX value is invalid", *argv);
 788
 789                         filter.index_mask = XFRM_FILTER_MASK_FULL;
 790
 791                 } else if (strcmp(*argv, "ptype") == 0) {
 792                         NEXT_ARG();
 793                         xfrm_policy_ptype_parse(&filter.ptype, &argc, &argv);
 794
 795                         filter.ptype_mask = XFRM_FILTER_MASK_FULL;
 796
 797                 } else if (strcmp(*argv, "action") == 0) {
 798                         NEXT_ARG();
 799                         if (strcmp(*argv, "allow") == 0)
 800                                 filter.xpinfo.action = XFRM_POLICY_ALLOW;
 801                         else if (strcmp(*argv, "block") == 0)
 802                                 filter.xpinfo.action = XFRM_POLICY_BLOCK;
 803                         else
 804                                 invarg("ACTION value is invalid\n", *argv);
 805
 806                         filter.action_mask = XFRM_FILTER_MASK_FULL;
 807
 808                 } else if (strcmp(*argv, "priority") == 0) {
 809                         NEXT_ARG();
 810                         if (get_u32(&filter.xpinfo.priority, *argv, 0))
 811                                 invarg("PRIORITY value is invalid", *argv);
 812
 813                         filter.priority_mask = XFRM_FILTER_MASK_FULL;
 814
 815                 } else if (strcmp(*argv, "flag") == 0) {
 816                         NEXT_ARG();
 817                         xfrm_policy_flag_parse(&filter.xpinfo.flags, &argc,
 818                                                &argv);
 819
 820                         filter.policy_flags_mask = XFRM_FILTER_MASK_FULL;
 821
 822                 } else if (strcmp(*argv, "nosock") == 0) {
 823                         /* filter all socket-based policies */
 824                         filter.filter_socket = 1;
 825                 } else {
 826                         if (selp)
 827                                 invarg("unknown", *argv);
 828                         selp = *argv;
 829
 830                         xfrm_selector_parse(&filter.xpinfo.sel, &argc, &argv);
 831                         if (preferred_family == AF_UNSPEC)
 832                                 preferred_family = filter.xpinfo.sel.family;
 833
 834                 }
 835
 836                 argc--; argv++;
 837         }
 838
 839         if (rtnl_open_byproto(&rth, 0, NETLINK_XFRM) < 0)
 840                 exit(1);
 841
 842         if (deleteall) {
 843                 struct xfrm_buffer xb;
 844                 char buf[NLMSG_DELETEALL_BUF_SIZE];
 845                 int i;
 846
 847                 xb.buf = buf;
 848                 xb.size = sizeof(buf);
 849                 xb.rth = &rth;
 850
 851                 for (i = 0; ; i++) {
 852                         struct {
 853                                 struct nlmsghdr n;
 854                                 char buf[NLMSG_BUF_SIZE];
 855                         } req = {
 856                                 .n.nlmsg_len = NLMSG_HDRLEN,
 857                                 .n.nlmsg_flags = NLM_F_DUMP | NLM_F_REQUEST,
 858                                 .n.nlmsg_type = XFRM_MSG_GETPOLICY,
 859                                 .n.nlmsg_seq = rth.dump = ++rth.seq,
 860                         };
 861
 862                         xb.offset = 0;
 863                         xb.nlmsg_count = 0;
 864
 865                         if (show_stats > 1)
 866                                 fprintf(stderr, "Delete-all round = %d\n", i);
 867
 868                         if (rtnl_send(&rth, (void *)&req, req.n.nlmsg_len) < 0) {
 869                                 perror("Cannot send dump request");
 870                                 exit(1);
 871                         }
 872
 873                         if (rtnl_dump_filter(&rth, xfrm_policy_keep, &xb) < 0) {
 874                                 fprintf(stderr, "Delete-all terminated\n");
 875                                 exit(1);
 876                         }
 877                         if (xb.nlmsg_count == 0) {
 878                                 if (show_stats > 1)
 879                                         fprintf(stderr, "Delete-all completed\n");
 880                                 break;
 881                         }
 882
 883                         if (rtnl_send_check(&rth, xb.buf, xb.offset) < 0) {
 884                                 perror("Failed to send delete-all request");
 885                                 exit(1);
 886                         }
 887                         if (show_stats > 1)
 888                                 fprintf(stderr, "Delete-all nlmsg count = %d\n", xb.nlmsg_count);
 889
 890                         xb.offset = 0;
 891                         xb.nlmsg_count = 0;
 892                 }
 893         } else {
 894                 struct {
 895                         struct nlmsghdr n;
 896                         char buf[NLMSG_BUF_SIZE];
 897                 } req = {
 898                         .n.nlmsg_len = NLMSG_HDRLEN,
 899                         .n.nlmsg_flags = NLM_F_DUMP | NLM_F_REQUEST,
 900                         .n.nlmsg_type = XFRM_MSG_GETPOLICY,
 901                         .n.nlmsg_seq = rth.dump = ++rth.seq,
 902                 };
 903
 904                 if (rtnl_send(&rth, (void *)&req, req.n.nlmsg_len) < 0) {
 905                         perror("Cannot send dump request");
 906                         exit(1);
 907                 }
 908
 909                 if (rtnl_dump_filter(&rth, xfrm_policy_print, stdout) < 0) {
 910                         fprintf(stderr, "Dump terminated\n");
 911                         exit(1);
 912                 }
 913         }
 914
 915         rtnl_close(&rth);
 916
 917         exit(0);
 918 }
 919
 920 static int print_spdinfo(struct nlmsghdr *n, void *arg)
 921 {
 922         FILE *fp = (FILE *)arg;
 923         __u32 *f = NLMSG_DATA(n);
 924         struct rtattr *tb[XFRMA_SPD_MAX+1];
 925         struct rtattr *rta;
 926
 927         int len = n->nlmsg_len;
 928
 929         len -= NLMSG_LENGTH(sizeof(__u32));
 930         if (len < 0) {
 931                 fprintf(stderr, "SPDinfo: Wrong len %d\n", len);
 932                 return -1;
 933         }
 934
 935         rta = XFRMSAPD_RTA(f);
 936         parse_rtattr(tb, XFRMA_SPD_MAX, rta, len);
 937
 938         fprintf(fp, "\t SPD");
 939         if (tb[XFRMA_SPD_INFO]) {
 940                 struct xfrmu_spdinfo *si;
 941
 942                 if (RTA_PAYLOAD(tb[XFRMA_SPD_INFO]) < sizeof(*si)) {
 943                         fprintf(stderr, "SPDinfo: Wrong len %d\n", len);
 944                         return -1;
 945                 }
 946                 si = RTA_DATA(tb[XFRMA_SPD_INFO]);
 947                 fprintf(fp, " IN  %d", si->incnt);
 948                 fprintf(fp, " OUT %d", si->outcnt);
 949                 fprintf(fp, " FWD %d", si->fwdcnt);
 950
 951                 if (show_stats) {
 952                         fprintf(fp, " (Sock:");
 953                         fprintf(fp, " IN %d", si->inscnt);
 954                         fprintf(fp, " OUT %d", si->outscnt);
 955                         fprintf(fp, " FWD %d", si->fwdscnt);
 956                         fprintf(fp, ")");
 957                 }
 958
 959                 fprintf(fp, "%s", _SL_);
 960         }
 961         if (show_stats > 1) {
 962                 struct xfrmu_spdhinfo *sh;
 963
 964                 if (tb[XFRMA_SPD_HINFO]) {
 965                         if (RTA_PAYLOAD(tb[XFRMA_SPD_HINFO]) < sizeof(*sh)) {
 966                                 fprintf(stderr, "SPDinfo: Wrong len %d\n", len);
 967                                 return -1;
 968                         }
 969                         sh = RTA_DATA(tb[XFRMA_SPD_HINFO]);
 970                         fprintf(fp, "\t SPD buckets:");
 971                         fprintf(fp, " count %d", sh->spdhcnt);
 972                         fprintf(fp, " Max %d", sh->spdhmcnt);
 973                         fprintf(fp, "%s", _SL_);
 974                 }
 975                 if (tb[XFRMA_SPD_IPV4_HTHRESH]) {
 976                         struct xfrmu_spdhthresh *th;
 977
 978                         if (RTA_PAYLOAD(tb[XFRMA_SPD_IPV4_HTHRESH]) < sizeof(*th)) {
 979                                 fprintf(stderr, "SPDinfo: Wrong len %d\n", len);
 980                                 return -1;
 981                         }
 982                         th = RTA_DATA(tb[XFRMA_SPD_IPV4_HTHRESH]);
 983                         fprintf(fp, "\t SPD IPv4 thresholds:");
 984                         fprintf(fp, " local %d", th->lbits);
 985                         fprintf(fp, " remote %d", th->rbits);
 986                         fprintf(fp, "%s", _SL_);
 987
 988                 }
 989                 if (tb[XFRMA_SPD_IPV6_HTHRESH]) {
 990                         struct xfrmu_spdhthresh *th;
 991
 992                         if (RTA_PAYLOAD(tb[XFRMA_SPD_IPV6_HTHRESH]) < sizeof(*th)) {
 993                                 fprintf(stderr, "SPDinfo: Wrong len %d\n", len);
 994                                 return -1;
 995                         }
 996                         th = RTA_DATA(tb[XFRMA_SPD_IPV6_HTHRESH]);
 997                         fprintf(fp, "\t SPD IPv6 thresholds:");
 998                         fprintf(fp, " local %d", th->lbits);
 999                         fprintf(fp, " remote %d", th->rbits);
1000                         fprintf(fp, "%s", _SL_);
1001                 }
1002         }
1003
1004         if (oneline)
1005                 fprintf(fp, "\n");
1006
1007         return 0;
1008 }
1009
1010 static int xfrm_spd_setinfo(int argc, char **argv)
1011 {
1012         struct rtnl_handle rth;
1013         struct {
1014                 struct nlmsghdr                 n;
1015                 __u32                           flags;
1016                 char                            buf[RTA_BUF_SIZE];
1017         } req = {
1018                 .n.nlmsg_len = NLMSG_LENGTH(sizeof(__u32)),
1019                 .n.nlmsg_flags = NLM_F_REQUEST,
1020                 .n.nlmsg_type = XFRM_MSG_NEWSPDINFO,
1021                 .flags = 0XFFFFFFFF,
1022         };
1023
1024         char *thr4 = NULL;
1025         char *thr6 = NULL;
1026
1027         while (argc > 0) {
1028                 if (strcmp(*argv, "hthresh4") == 0) {
1029                         struct xfrmu_spdhthresh thr;
1030
1031                         if (thr4)
1032                                 duparg("hthresh4", *argv);
1033                         thr4 = *argv;
1034                         NEXT_ARG();
1035                         if (get_u8(&thr.lbits, *argv, 0) || thr.lbits > 32)
1036                                 invarg("hthresh4 LBITS value is invalid", *argv);
1037                         NEXT_ARG();
1038                         if (get_u8(&thr.rbits, *argv, 0) || thr.rbits > 32)
1039                                 invarg("hthresh4 RBITS value is invalid", *argv);
1040
1041                         addattr_l(&req.n, sizeof(req), XFRMA_SPD_IPV4_HTHRESH,
1042                                   (void *)&thr, sizeof(thr));
1043                 } else if (strcmp(*argv, "hthresh6") == 0) {
1044                         struct xfrmu_spdhthresh thr;
1045
1046                         if (thr6)
1047                                 duparg("hthresh6", *argv);
1048                         thr6 = *argv;
1049                         NEXT_ARG();
1050                         if (get_u8(&thr.lbits, *argv, 0) || thr.lbits > 128)
1051                                 invarg("hthresh6 LBITS value is invalid", *argv);
1052                         NEXT_ARG();
1053                         if (get_u8(&thr.rbits, *argv, 0) || thr.rbits > 128)
1054                                 invarg("hthresh6 RBITS value is invalid", *argv);
1055
1056                         addattr_l(&req.n, sizeof(req), XFRMA_SPD_IPV6_HTHRESH,
1057                                   (void *)&thr, sizeof(thr));
1058                 } else {
1059                         invarg("unknown", *argv);
1060                 }
1061
1062                 argc--; argv++;
1063         }
1064
1065         if (rtnl_open_byproto(&rth, 0, NETLINK_XFRM) < 0)
1066                 exit(1);
1067
1068         if (rtnl_talk(&rth, &req.n, NULL) < 0)
1069                 exit(2);
1070
1071         rtnl_close(&rth);
1072
1073         return 0;
1074 }
1075
1076 static int xfrm_spd_getinfo(int argc, char **argv)
1077 {
1078         struct rtnl_handle rth;
1079         struct {
1080                 struct nlmsghdr                 n;
1081                 __u32                           flags;
1082         } req = {
1083                 .n.nlmsg_len = NLMSG_LENGTH(sizeof(__u32)),
1084                 .n.nlmsg_flags = NLM_F_REQUEST,
1085                 .n.nlmsg_type = XFRM_MSG_GETSPDINFO,
1086                 .flags = 0XFFFFFFFF,
1087         };
1088         struct nlmsghdr *answer;
1089
1090         if (rtnl_open_byproto(&rth, 0, NETLINK_XFRM) < 0)
1091                 exit(1);
1092
1093         if (rtnl_talk(&rth, &req.n, &answer) < 0)
1094                 exit(2);
1095
1096         print_spdinfo(answer, (void *)stdout);
1097
1098         free(answer);
1099         rtnl_close(&rth);
1100
1101         return 0;
1102 }
1103
1104 static int xfrm_policy_flush(int argc, char **argv)
1105 {
1106         struct rtnl_handle rth;
1107         struct {
1108                 struct nlmsghdr n;
1109                 char            buf[RTA_BUF_SIZE];
1110         } req = {
1111                 .n.nlmsg_len = NLMSG_LENGTH(0), /* nlmsg data is nothing */
1112                 .n.nlmsg_flags = NLM_F_REQUEST,
1113                 .n.nlmsg_type = XFRM_MSG_FLUSHPOLICY,
1114         };
1115         char *ptypep = NULL;
1116         struct xfrm_userpolicy_type upt = {};
1117
1118         while (argc > 0) {
1119                 if (strcmp(*argv, "ptype") == 0) {
1120                         if (ptypep)
1121                                 duparg("ptype", *argv);
1122                         ptypep = *argv;
1123
1124                         NEXT_ARG();
1125                         xfrm_policy_ptype_parse(&upt.type, &argc, &argv);
1126                 } else
1127                         invarg("unknown", *argv);
1128
1129                 argc--; argv++;
1130         }
1131
1132         if (ptypep) {
1133                 addattr_l(&req.n, sizeof(req), XFRMA_POLICY_TYPE,
1134                           (void *)&upt, sizeof(upt));
1135         }
1136
1137         if (rtnl_open_byproto(&rth, 0, NETLINK_XFRM) < 0)
1138                 exit(1);
1139
1140         if (show_stats > 1)
1141                 fprintf(stderr, "Flush policy\n");
1142
1143         if (rtnl_talk(&rth, &req.n, NULL) < 0)
1144                 exit(2);
1145
1146         rtnl_close(&rth);
1147
1148         return 0;
1149 }
1150
1151 int do_xfrm_policy(int argc, char **argv)
1152 {
1153         if (argc < 1)
1154                 return xfrm_policy_list_or_deleteall(0, NULL, 0);
1155
1156         if (matches(*argv, "add") == 0)
1157                 return xfrm_policy_modify(XFRM_MSG_NEWPOLICY, 0,
1158                                           argc-1, argv+1);
1159         if (matches(*argv, "update") == 0)
1160                 return xfrm_policy_modify(XFRM_MSG_UPDPOLICY, 0,
1161                                           argc-1, argv+1);
1162         if (matches(*argv, "delete") == 0)
1163                 return xfrm_policy_delete(argc-1, argv+1);
1164         if (matches(*argv, "deleteall") == 0 || matches(*argv, "delall") == 0)
1165                 return xfrm_policy_list_or_deleteall(argc-1, argv+1, 1);
1166         if (matches(*argv, "list") == 0 || matches(*argv, "show") == 0
1167             || matches(*argv, "lst") == 0)
1168                 return xfrm_policy_list_or_deleteall(argc-1, argv+1, 0);
1169         if (matches(*argv, "get") == 0)
1170                 return xfrm_policy_get(argc-1, argv+1);
1171         if (matches(*argv, "flush") == 0)
1172                 return xfrm_policy_flush(argc-1, argv+1);
1173         if (matches(*argv, "count") == 0)
1174                 return xfrm_spd_getinfo(argc, argv);
1175         if (matches(*argv, "set") == 0)
1176                 return xfrm_spd_setinfo(argc-1, argv+1);
1177         if (matches(*argv, "help") == 0)
1178                 usage();
1179         fprintf(stderr, "Command \"%s\" is unknown, try \"ip xfrm policy help\".\n", *argv);
1180         exit(-1);
1181 }