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(const struct sockaddr_nl *who, struct nlmsghdr *n,
 457                       void *arg)
 458 {
 459         struct rtattr *tb[XFRMA_MAX+1];
 460         struct rtattr *rta;
 461         struct xfrm_userpolicy_info *xpinfo = NULL;
 462         struct xfrm_user_polexpire *xpexp = NULL;
 463         struct xfrm_userpolicy_id *xpid = NULL;
 464         __u8 ptype = XFRM_POLICY_TYPE_MAIN;
 465         FILE *fp = (FILE *)arg;
 466         int len = n->nlmsg_len;
 467
 468         if (n->nlmsg_type != XFRM_MSG_NEWPOLICY &&
 469             n->nlmsg_type != XFRM_MSG_DELPOLICY &&
 470             n->nlmsg_type != XFRM_MSG_UPDPOLICY &&
 471             n->nlmsg_type != XFRM_MSG_POLEXPIRE) {
 472                 fprintf(stderr, "Not a policy: %08x %08x %08x\n",
 473                         n->nlmsg_len, n->nlmsg_type, n->nlmsg_flags);
 474                 return 0;
 475         }
 476
 477         if (n->nlmsg_type == XFRM_MSG_DELPOLICY)  {
 478                 xpid = NLMSG_DATA(n);
 479                 len -= NLMSG_SPACE(sizeof(*xpid));
 480         } else if (n->nlmsg_type == XFRM_MSG_POLEXPIRE) {
 481                 xpexp = NLMSG_DATA(n);
 482                 xpinfo = &xpexp->pol;
 483                 len -= NLMSG_SPACE(sizeof(*xpexp));
 484         } else {
 485                 xpexp = NULL;
 486                 xpinfo = NLMSG_DATA(n);
 487                 len -= NLMSG_SPACE(sizeof(*xpinfo));
 488         }
 489
 490         if (len < 0) {
 491                 fprintf(stderr, "BUG: wrong nlmsg len %d\n", len);
 492                 return -1;
 493         }
 494
 495         if (n->nlmsg_type == XFRM_MSG_DELPOLICY)
 496                 rta = XFRMPID_RTA(xpid);
 497         else if (n->nlmsg_type == XFRM_MSG_POLEXPIRE)
 498                 rta = XFRMPEXP_RTA(xpexp);
 499         else
 500                 rta = XFRMP_RTA(xpinfo);
 501
 502         parse_rtattr(tb, XFRMA_MAX, rta, len);
 503
 504         if (tb[XFRMA_POLICY_TYPE]) {
 505                 struct xfrm_userpolicy_type *upt;
 506
 507                 if (RTA_PAYLOAD(tb[XFRMA_POLICY_TYPE]) < sizeof(*upt)) {
 508                         fprintf(stderr, "too short XFRMA_POLICY_TYPE len\n");
 509                         return -1;
 510                 }
 511                 upt = RTA_DATA(tb[XFRMA_POLICY_TYPE]);
 512                 ptype = upt->type;
 513         }
 514
 515         if (xpinfo && !xfrm_policy_filter_match(xpinfo, ptype))
 516                 return 0;
 517
 518         if (n->nlmsg_type == XFRM_MSG_DELPOLICY)
 519                 fprintf(fp, "Deleted ");
 520         else if (n->nlmsg_type == XFRM_MSG_UPDPOLICY)
 521                 fprintf(fp, "Updated ");
 522         else if (n->nlmsg_type == XFRM_MSG_POLEXPIRE)
 523                 fprintf(fp, "Expired ");
 524
 525         if (n->nlmsg_type == XFRM_MSG_DELPOLICY) {
 526                 /* xfrm_policy_id_print(); */
 527                 if (!tb[XFRMA_POLICY]) {
 528                         fprintf(stderr, "Buggy XFRM_MSG_DELPOLICY: no XFRMA_POLICY\n");
 529                         return -1;
 530                 }
 531                 if (RTA_PAYLOAD(tb[XFRMA_POLICY]) < sizeof(*xpinfo)) {
 532                         fprintf(stderr, "Buggy XFRM_MSG_DELPOLICY: too short XFRMA_POLICY len\n");
 533                         return -1;
 534                 }
 535                 xpinfo = RTA_DATA(tb[XFRMA_POLICY]);
 536         }
 537
 538         xfrm_policy_info_print(xpinfo, tb, fp, NULL, NULL);
 539
 540         if (n->nlmsg_type == XFRM_MSG_POLEXPIRE) {
 541                 fprintf(fp, "\t");
 542                 fprintf(fp, "hard %u", xpexp->hard);
 543                 fprintf(fp, "%s", _SL_);
 544         }
 545
 546         if (oneline)
 547                 fprintf(fp, "\n");
 548         fflush(fp);
 549
 550         return 0;
 551 }
 552
 553 static int xfrm_policy_get_or_delete(int argc, char **argv, int delete,
 554                                      struct nlmsghdr **answer)
 555 {
 556         struct rtnl_handle rth;
 557         struct {
 558                 struct nlmsghdr                 n;
 559                 struct xfrm_userpolicy_id       xpid;
 560                 char                            buf[RTA_BUF_SIZE];
 561         } req = {
 562                 .n.nlmsg_len = NLMSG_LENGTH(sizeof(req.xpid)),
 563                 .n.nlmsg_flags = NLM_F_REQUEST,
 564                 .n.nlmsg_type = delete ? XFRM_MSG_DELPOLICY
 565                                        : XFRM_MSG_GETPOLICY,
 566         };
 567         char *dirp = NULL;
 568         char *selp = NULL;
 569         char *indexp = NULL;
 570         char *ptypep = NULL;
 571         char *sctxp = NULL;
 572         struct xfrm_userpolicy_type upt = {};
 573         struct xfrm_mark mark = {0, 0};
 574         struct {
 575                 struct xfrm_user_sec_ctx sctx;
 576                 char    str[CTX_BUF_SIZE];
 577         } ctx = {};
 578
 579         while (argc > 0) {
 580                 if (strcmp(*argv, "dir") == 0) {
 581                         if (dirp)
 582                                 duparg("dir", *argv);
 583                         dirp = *argv;
 584
 585                         NEXT_ARG();
 586                         xfrm_policy_dir_parse(&req.xpid.dir, &argc, &argv);
 587
 588                 } else if (strcmp(*argv, "ctx") == 0) {
 589                         char *context;
 590
 591                         if (sctxp)
 592                                 duparg("ctx", *argv);
 593                         sctxp = *argv;
 594                         NEXT_ARG();
 595                         context = *argv;
 596                         xfrm_sctx_parse((char *)&ctx.str, context, &ctx.sctx);
 597                 } else if (strcmp(*argv, "mark") == 0) {
 598                         xfrm_parse_mark(&mark, &argc, &argv);
 599                 } else if (strcmp(*argv, "index") == 0) {
 600                         if (indexp)
 601                                 duparg("index", *argv);
 602                         indexp = *argv;
 603
 604                         NEXT_ARG();
 605                         if (get_u32(&req.xpid.index, *argv, 0))
 606                                 invarg("INDEX value is invalid", *argv);
 607
 608                 } else if (strcmp(*argv, "ptype") == 0) {
 609                         if (ptypep)
 610                                 duparg("ptype", *argv);
 611                         ptypep = *argv;
 612
 613                         NEXT_ARG();
 614                         xfrm_policy_ptype_parse(&upt.type, &argc, &argv);
 615
 616                 } else {
 617                         if (selp)
 618                                 invarg("unknown", *argv);
 619                         selp = *argv;
 620
 621                         xfrm_selector_parse(&req.xpid.sel, &argc, &argv);
 622                         if (preferred_family == AF_UNSPEC)
 623                                 preferred_family = req.xpid.sel.family;
 624
 625                 }
 626
 627                 argc--; argv++;
 628         }
 629
 630         if (!dirp) {
 631                 fprintf(stderr, "Not enough information: DIR is required.\n");
 632                 exit(1);
 633         }
 634         if (ptypep) {
 635                 addattr_l(&req.n, sizeof(req), XFRMA_POLICY_TYPE,
 636                           (void *)&upt, sizeof(upt));
 637         }
 638         if (!selp && !indexp) {
 639                 fprintf(stderr, "Not enough information: either SELECTOR or INDEX is required.\n");
 640                 exit(1);
 641         }
 642         if (selp && indexp)
 643                 duparg2("SELECTOR", "INDEX");
 644
 645         if (rtnl_open_byproto(&rth, 0, NETLINK_XFRM) < 0)
 646                 exit(1);
 647
 648         if (req.xpid.sel.family == AF_UNSPEC)
 649                 req.xpid.sel.family = AF_INET;
 650
 651         if (mark.m & mark.v) {
 652                 int r = addattr_l(&req.n, sizeof(req.buf), XFRMA_MARK,
 653                                   (void *)&mark, sizeof(mark));
 654                 if (r < 0) {
 655                         fprintf(stderr, "%s: XFRMA_MARK failed\n", __func__);
 656                         exit(1);
 657                 }
 658         }
 659
 660         if (sctxp) {
 661                 addattr_l(&req.n, sizeof(req), XFRMA_SEC_CTX,
 662                           (void *)&ctx, ctx.sctx.len);
 663         }
 664
 665         if (rtnl_talk(&rth, &req.n, answer) < 0)
 666                 exit(2);
 667
 668         rtnl_close(&rth);
 669
 670         return 0;
 671 }
 672
 673 static int xfrm_policy_delete(int argc, char **argv)
 674 {
 675         return xfrm_policy_get_or_delete(argc, argv, 1, NULL);
 676 }
 677
 678 static int xfrm_policy_get(int argc, char **argv)
 679 {
 680         struct nlmsghdr *n = NULL;
 681
 682         xfrm_policy_get_or_delete(argc, argv, 0, &n);
 683
 684         if (xfrm_policy_print(NULL, n, (void *)stdout) < 0) {
 685                 fprintf(stderr, "An error :-)\n");
 686                 exit(1);
 687         }
 688
 689         free(n);
 690         return 0;
 691 }
 692
 693 /*
 694  * With an existing policy of nlmsg, make new nlmsg for deleting the policy
 695  * and store it to buffer.
 696  */
 697 static int xfrm_policy_keep(const struct sockaddr_nl *who,
 698                             struct nlmsghdr *n,
 699                             void *arg)
 700 {
 701         struct xfrm_buffer *xb = (struct xfrm_buffer *)arg;
 702         struct rtnl_handle *rth = xb->rth;
 703         struct xfrm_userpolicy_info *xpinfo = NLMSG_DATA(n);
 704         int len = n->nlmsg_len;
 705         struct rtattr *tb[XFRMA_MAX+1];
 706         __u8 ptype = XFRM_POLICY_TYPE_MAIN;
 707         struct nlmsghdr *new_n;
 708         struct xfrm_userpolicy_id *xpid;
 709
 710         if (n->nlmsg_type != XFRM_MSG_NEWPOLICY) {
 711                 fprintf(stderr, "Not a policy: %08x %08x %08x\n",
 712                         n->nlmsg_len, n->nlmsg_type, n->nlmsg_flags);
 713                 return 0;
 714         }
 715
 716         len -= NLMSG_LENGTH(sizeof(*xpinfo));
 717         if (len < 0) {
 718                 fprintf(stderr, "BUG: wrong nlmsg len %d\n", len);
 719                 return -1;
 720         }
 721
 722         parse_rtattr(tb, XFRMA_MAX, XFRMP_RTA(xpinfo), len);
 723
 724         if (tb[XFRMA_POLICY_TYPE]) {
 725                 struct xfrm_userpolicy_type *upt;
 726
 727                 if (RTA_PAYLOAD(tb[XFRMA_POLICY_TYPE]) < sizeof(*upt)) {
 728                         fprintf(stderr, "too short XFRMA_POLICY_TYPE len\n");
 729                         return -1;
 730                 }
 731                 upt = RTA_DATA(tb[XFRMA_POLICY_TYPE]);
 732                 ptype = upt->type;
 733         }
 734
 735         if (!xfrm_policy_filter_match(xpinfo, ptype))
 736                 return 0;
 737
 738         /* can't delete socket policies */
 739         if (xpinfo->dir >= XFRM_POLICY_MAX)
 740                 return 0;
 741
 742         if (xb->offset + NLMSG_LENGTH(sizeof(*xpid)) > xb->size)
 743                 return 0;
 744
 745         new_n = (struct nlmsghdr *)(xb->buf + xb->offset);
 746         new_n->nlmsg_len = NLMSG_LENGTH(sizeof(*xpid));
 747         new_n->nlmsg_flags = NLM_F_REQUEST;
 748         new_n->nlmsg_type = XFRM_MSG_DELPOLICY;
 749         new_n->nlmsg_seq = ++rth->seq;
 750
 751         xpid = NLMSG_DATA(new_n);
 752         memcpy(&xpid->sel, &xpinfo->sel, sizeof(xpid->sel));
 753         xpid->dir = xpinfo->dir;
 754         xpid->index = xpinfo->index;
 755
 756         if (tb[XFRMA_MARK]) {
 757                 int r = addattr_l(new_n, xb->size, XFRMA_MARK,
 758                                 (void *)RTA_DATA(tb[XFRMA_MARK]), tb[XFRMA_MARK]->rta_len);
 759                 if (r < 0) {
 760                         fprintf(stderr, "%s: XFRMA_MARK failed\n", __func__);
 761                         exit(1);
 762                 }
 763         }
 764
 765         xb->offset += new_n->nlmsg_len;
 766         xb->nlmsg_count++;
 767
 768         return 0;
 769 }
 770
 771 static int xfrm_policy_list_or_deleteall(int argc, char **argv, int deleteall)
 772 {
 773         char *selp = NULL;
 774         struct rtnl_handle rth;
 775
 776         if (argc > 0)
 777                 filter.use = 1;
 778         filter.xpinfo.sel.family = preferred_family;
 779
 780         while (argc > 0) {
 781                 if (strcmp(*argv, "dir") == 0) {
 782                         NEXT_ARG();
 783                         xfrm_policy_dir_parse(&filter.xpinfo.dir, &argc, &argv);
 784
 785                         filter.dir_mask = XFRM_FILTER_MASK_FULL;
 786
 787                 } else if (strcmp(*argv, "index") == 0) {
 788                         NEXT_ARG();
 789                         if (get_u32(&filter.xpinfo.index, *argv, 0))
 790                                 invarg("INDEX value is invalid", *argv);
 791
 792                         filter.index_mask = XFRM_FILTER_MASK_FULL;
 793
 794                 } else if (strcmp(*argv, "ptype") == 0) {
 795                         NEXT_ARG();
 796                         xfrm_policy_ptype_parse(&filter.ptype, &argc, &argv);
 797
 798                         filter.ptype_mask = XFRM_FILTER_MASK_FULL;
 799
 800                 } else if (strcmp(*argv, "action") == 0) {
 801                         NEXT_ARG();
 802                         if (strcmp(*argv, "allow") == 0)
 803                                 filter.xpinfo.action = XFRM_POLICY_ALLOW;
 804                         else if (strcmp(*argv, "block") == 0)
 805                                 filter.xpinfo.action = XFRM_POLICY_BLOCK;
 806                         else
 807                                 invarg("ACTION value is invalid\n", *argv);
 808
 809                         filter.action_mask = XFRM_FILTER_MASK_FULL;
 810
 811                 } else if (strcmp(*argv, "priority") == 0) {
 812                         NEXT_ARG();
 813                         if (get_u32(&filter.xpinfo.priority, *argv, 0))
 814                                 invarg("PRIORITY value is invalid", *argv);
 815
 816                         filter.priority_mask = XFRM_FILTER_MASK_FULL;
 817
 818                 } else if (strcmp(*argv, "flag") == 0) {
 819                         NEXT_ARG();
 820                         xfrm_policy_flag_parse(&filter.xpinfo.flags, &argc,
 821                                                &argv);
 822
 823                         filter.policy_flags_mask = XFRM_FILTER_MASK_FULL;
 824
 825                 } else if (strcmp(*argv, "nosock") == 0) {
 826                         /* filter all socket-based policies */
 827                         filter.filter_socket = 1;
 828                 } else {
 829                         if (selp)
 830                                 invarg("unknown", *argv);
 831                         selp = *argv;
 832
 833                         xfrm_selector_parse(&filter.xpinfo.sel, &argc, &argv);
 834                         if (preferred_family == AF_UNSPEC)
 835                                 preferred_family = filter.xpinfo.sel.family;
 836
 837                 }
 838
 839                 argc--; argv++;
 840         }
 841
 842         if (rtnl_open_byproto(&rth, 0, NETLINK_XFRM) < 0)
 843                 exit(1);
 844
 845         if (deleteall) {
 846                 struct xfrm_buffer xb;
 847                 char buf[NLMSG_DELETEALL_BUF_SIZE];
 848                 int i;
 849
 850                 xb.buf = buf;
 851                 xb.size = sizeof(buf);
 852                 xb.rth = &rth;
 853
 854                 for (i = 0; ; i++) {
 855                         struct {
 856                                 struct nlmsghdr n;
 857                                 char buf[NLMSG_BUF_SIZE];
 858                         } req = {
 859                                 .n.nlmsg_len = NLMSG_HDRLEN,
 860                                 .n.nlmsg_flags = NLM_F_DUMP | NLM_F_REQUEST,
 861                                 .n.nlmsg_type = XFRM_MSG_GETPOLICY,
 862                                 .n.nlmsg_seq = rth.dump = ++rth.seq,
 863                         };
 864
 865                         xb.offset = 0;
 866                         xb.nlmsg_count = 0;
 867
 868                         if (show_stats > 1)
 869                                 fprintf(stderr, "Delete-all round = %d\n", i);
 870
 871                         if (rtnl_send(&rth, (void *)&req, req.n.nlmsg_len) < 0) {
 872                                 perror("Cannot send dump request");
 873                                 exit(1);
 874                         }
 875
 876                         if (rtnl_dump_filter(&rth, xfrm_policy_keep, &xb) < 0) {
 877                                 fprintf(stderr, "Delete-all terminated\n");
 878                                 exit(1);
 879                         }
 880                         if (xb.nlmsg_count == 0) {
 881                                 if (show_stats > 1)
 882                                         fprintf(stderr, "Delete-all completed\n");
 883                                 break;
 884                         }
 885
 886                         if (rtnl_send_check(&rth, xb.buf, xb.offset) < 0) {
 887                                 perror("Failed to send delete-all request");
 888                                 exit(1);
 889                         }
 890                         if (show_stats > 1)
 891                                 fprintf(stderr, "Delete-all nlmsg count = %d\n", xb.nlmsg_count);
 892
 893                         xb.offset = 0;
 894                         xb.nlmsg_count = 0;
 895                 }
 896         } else {
 897                 struct {
 898                         struct nlmsghdr n;
 899                         char buf[NLMSG_BUF_SIZE];
 900                 } req = {
 901                         .n.nlmsg_len = NLMSG_HDRLEN,
 902                         .n.nlmsg_flags = NLM_F_DUMP | NLM_F_REQUEST,
 903                         .n.nlmsg_type = XFRM_MSG_GETPOLICY,
 904                         .n.nlmsg_seq = rth.dump = ++rth.seq,
 905                 };
 906
 907                 if (rtnl_send(&rth, (void *)&req, req.n.nlmsg_len) < 0) {
 908                         perror("Cannot send dump request");
 909                         exit(1);
 910                 }
 911
 912                 if (rtnl_dump_filter(&rth, xfrm_policy_print, stdout) < 0) {
 913                         fprintf(stderr, "Dump terminated\n");
 914                         exit(1);
 915                 }
 916         }
 917
 918         rtnl_close(&rth);
 919
 920         exit(0);
 921 }
 922
 923 static int print_spdinfo(struct nlmsghdr *n, void *arg)
 924 {
 925         FILE *fp = (FILE *)arg;
 926         __u32 *f = NLMSG_DATA(n);
 927         struct rtattr *tb[XFRMA_SPD_MAX+1];
 928         struct rtattr *rta;
 929
 930         int len = n->nlmsg_len;
 931
 932         len -= NLMSG_LENGTH(sizeof(__u32));
 933         if (len < 0) {
 934                 fprintf(stderr, "SPDinfo: Wrong len %d\n", len);
 935                 return -1;
 936         }
 937
 938         rta = XFRMSAPD_RTA(f);
 939         parse_rtattr(tb, XFRMA_SPD_MAX, rta, len);
 940
 941         fprintf(fp, "\t SPD");
 942         if (tb[XFRMA_SPD_INFO]) {
 943                 struct xfrmu_spdinfo *si;
 944
 945                 if (RTA_PAYLOAD(tb[XFRMA_SPD_INFO]) < sizeof(*si)) {
 946                         fprintf(stderr, "SPDinfo: Wrong len %d\n", len);
 947                         return -1;
 948                 }
 949                 si = RTA_DATA(tb[XFRMA_SPD_INFO]);
 950                 fprintf(fp, " IN  %d", si->incnt);
 951                 fprintf(fp, " OUT %d", si->outcnt);
 952                 fprintf(fp, " FWD %d", si->fwdcnt);
 953
 954                 if (show_stats) {
 955                         fprintf(fp, " (Sock:");
 956                         fprintf(fp, " IN %d", si->inscnt);
 957                         fprintf(fp, " OUT %d", si->outscnt);
 958                         fprintf(fp, " FWD %d", si->fwdscnt);
 959                         fprintf(fp, ")");
 960                 }
 961
 962                 fprintf(fp, "%s", _SL_);
 963         }
 964         if (show_stats > 1) {
 965                 struct xfrmu_spdhinfo *sh;
 966
 967                 if (tb[XFRMA_SPD_HINFO]) {
 968                         if (RTA_PAYLOAD(tb[XFRMA_SPD_HINFO]) < sizeof(*sh)) {
 969                                 fprintf(stderr, "SPDinfo: Wrong len %d\n", len);
 970                                 return -1;
 971                         }
 972                         sh = RTA_DATA(tb[XFRMA_SPD_HINFO]);
 973                         fprintf(fp, "\t SPD buckets:");
 974                         fprintf(fp, " count %d", sh->spdhcnt);
 975                         fprintf(fp, " Max %d", sh->spdhmcnt);
 976                         fprintf(fp, "%s", _SL_);
 977                 }
 978                 if (tb[XFRMA_SPD_IPV4_HTHRESH]) {
 979                         struct xfrmu_spdhthresh *th;
 980
 981                         if (RTA_PAYLOAD(tb[XFRMA_SPD_IPV4_HTHRESH]) < sizeof(*th)) {
 982                                 fprintf(stderr, "SPDinfo: Wrong len %d\n", len);
 983                                 return -1;
 984                         }
 985                         th = RTA_DATA(tb[XFRMA_SPD_IPV4_HTHRESH]);
 986                         fprintf(fp, "\t SPD IPv4 thresholds:");
 987                         fprintf(fp, " local %d", th->lbits);
 988                         fprintf(fp, " remote %d", th->rbits);
 989                         fprintf(fp, "%s", _SL_);
 990
 991                 }
 992                 if (tb[XFRMA_SPD_IPV6_HTHRESH]) {
 993                         struct xfrmu_spdhthresh *th;
 994
 995                         if (RTA_PAYLOAD(tb[XFRMA_SPD_IPV6_HTHRESH]) < sizeof(*th)) {
 996                                 fprintf(stderr, "SPDinfo: Wrong len %d\n", len);
 997                                 return -1;
 998                         }
 999                         th = RTA_DATA(tb[XFRMA_SPD_IPV6_HTHRESH]);
1000                         fprintf(fp, "\t SPD IPv6 thresholds:");
1001                         fprintf(fp, " local %d", th->lbits);
1002                         fprintf(fp, " remote %d", th->rbits);
1003                         fprintf(fp, "%s", _SL_);
1004                 }
1005         }
1006
1007         if (oneline)
1008                 fprintf(fp, "\n");
1009
1010         return 0;
1011 }
1012
1013 static int xfrm_spd_setinfo(int argc, char **argv)
1014 {
1015         struct rtnl_handle rth;
1016         struct {
1017                 struct nlmsghdr                 n;
1018                 __u32                           flags;
1019                 char                            buf[RTA_BUF_SIZE];
1020         } req = {
1021                 .n.nlmsg_len = NLMSG_LENGTH(sizeof(__u32)),
1022                 .n.nlmsg_flags = NLM_F_REQUEST,
1023                 .n.nlmsg_type = XFRM_MSG_NEWSPDINFO,
1024                 .flags = 0XFFFFFFFF,
1025         };
1026
1027         char *thr4 = NULL;
1028         char *thr6 = NULL;
1029
1030         while (argc > 0) {
1031                 if (strcmp(*argv, "hthresh4") == 0) {
1032                         struct xfrmu_spdhthresh thr;
1033
1034                         if (thr4)
1035                                 duparg("hthresh4", *argv);
1036                         thr4 = *argv;
1037                         NEXT_ARG();
1038                         if (get_u8(&thr.lbits, *argv, 0) || thr.lbits > 32)
1039                                 invarg("hthresh4 LBITS value is invalid", *argv);
1040                         NEXT_ARG();
1041                         if (get_u8(&thr.rbits, *argv, 0) || thr.rbits > 32)
1042                                 invarg("hthresh4 RBITS value is invalid", *argv);
1043
1044                         addattr_l(&req.n, sizeof(req), XFRMA_SPD_IPV4_HTHRESH,
1045                                   (void *)&thr, sizeof(thr));
1046                 } else if (strcmp(*argv, "hthresh6") == 0) {
1047                         struct xfrmu_spdhthresh thr;
1048
1049                         if (thr6)
1050                                 duparg("hthresh6", *argv);
1051                         thr6 = *argv;
1052                         NEXT_ARG();
1053                         if (get_u8(&thr.lbits, *argv, 0) || thr.lbits > 128)
1054                                 invarg("hthresh6 LBITS value is invalid", *argv);
1055                         NEXT_ARG();
1056                         if (get_u8(&thr.rbits, *argv, 0) || thr.rbits > 128)
1057                                 invarg("hthresh6 RBITS value is invalid", *argv);
1058
1059                         addattr_l(&req.n, sizeof(req), XFRMA_SPD_IPV6_HTHRESH,
1060                                   (void *)&thr, sizeof(thr));
1061                 } else {
1062                         invarg("unknown", *argv);
1063                 }
1064
1065                 argc--; argv++;
1066         }
1067
1068         if (rtnl_open_byproto(&rth, 0, NETLINK_XFRM) < 0)
1069                 exit(1);
1070
1071         if (rtnl_talk(&rth, &req.n, NULL) < 0)
1072                 exit(2);
1073
1074         rtnl_close(&rth);
1075
1076         return 0;
1077 }
1078
1079 static int xfrm_spd_getinfo(int argc, char **argv)
1080 {
1081         struct rtnl_handle rth;
1082         struct {
1083                 struct nlmsghdr                 n;
1084                 __u32                           flags;
1085         } req = {
1086                 .n.nlmsg_len = NLMSG_LENGTH(sizeof(__u32)),
1087                 .n.nlmsg_flags = NLM_F_REQUEST,
1088                 .n.nlmsg_type = XFRM_MSG_GETSPDINFO,
1089                 .flags = 0XFFFFFFFF,
1090         };
1091         struct nlmsghdr *answer;
1092
1093         if (rtnl_open_byproto(&rth, 0, NETLINK_XFRM) < 0)
1094                 exit(1);
1095
1096         if (rtnl_talk(&rth, &req.n, &answer) < 0)
1097                 exit(2);
1098
1099         print_spdinfo(answer, (void *)stdout);
1100
1101         free(answer);
1102         rtnl_close(&rth);
1103
1104         return 0;
1105 }
1106
1107 static int xfrm_policy_flush(int argc, char **argv)
1108 {
1109         struct rtnl_handle rth;
1110         struct {
1111                 struct nlmsghdr n;
1112                 char            buf[RTA_BUF_SIZE];
1113         } req = {
1114                 .n.nlmsg_len = NLMSG_LENGTH(0), /* nlmsg data is nothing */
1115                 .n.nlmsg_flags = NLM_F_REQUEST,
1116                 .n.nlmsg_type = XFRM_MSG_FLUSHPOLICY,
1117         };
1118         char *ptypep = NULL;
1119         struct xfrm_userpolicy_type upt = {};
1120
1121         while (argc > 0) {
1122                 if (strcmp(*argv, "ptype") == 0) {
1123                         if (ptypep)
1124                                 duparg("ptype", *argv);
1125                         ptypep = *argv;
1126
1127                         NEXT_ARG();
1128                         xfrm_policy_ptype_parse(&upt.type, &argc, &argv);
1129                 } else
1130                         invarg("unknown", *argv);
1131
1132                 argc--; argv++;
1133         }
1134
1135         if (ptypep) {
1136                 addattr_l(&req.n, sizeof(req), XFRMA_POLICY_TYPE,
1137                           (void *)&upt, sizeof(upt));
1138         }
1139
1140         if (rtnl_open_byproto(&rth, 0, NETLINK_XFRM) < 0)
1141                 exit(1);
1142
1143         if (show_stats > 1)
1144                 fprintf(stderr, "Flush policy\n");
1145
1146         if (rtnl_talk(&rth, &req.n, NULL) < 0)
1147                 exit(2);
1148
1149         rtnl_close(&rth);
1150
1151         return 0;
1152 }
1153
1154 int do_xfrm_policy(int argc, char **argv)
1155 {
1156         if (argc < 1)
1157                 return xfrm_policy_list_or_deleteall(0, NULL, 0);
1158
1159         if (matches(*argv, "add") == 0)
1160                 return xfrm_policy_modify(XFRM_MSG_NEWPOLICY, 0,
1161                                           argc-1, argv+1);
1162         if (matches(*argv, "update") == 0)
1163                 return xfrm_policy_modify(XFRM_MSG_UPDPOLICY, 0,
1164                                           argc-1, argv+1);
1165         if (matches(*argv, "delete") == 0)
1166                 return xfrm_policy_delete(argc-1, argv+1);
1167         if (matches(*argv, "deleteall") == 0 || matches(*argv, "delall") == 0)
1168                 return xfrm_policy_list_or_deleteall(argc-1, argv+1, 1);
1169         if (matches(*argv, "list") == 0 || matches(*argv, "show") == 0
1170             || matches(*argv, "lst") == 0)
1171                 return xfrm_policy_list_or_deleteall(argc-1, argv+1, 0);
1172         if (matches(*argv, "get") == 0)
1173                 return xfrm_policy_get(argc-1, argv+1);
1174         if (matches(*argv, "flush") == 0)
1175                 return xfrm_policy_flush(argc-1, argv+1);
1176         if (matches(*argv, "count") == 0)
1177                 return xfrm_spd_getinfo(argc, argv);
1178         if (matches(*argv, "set") == 0)
1179                 return xfrm_spd_setinfo(argc-1, argv+1);
1180         if (matches(*argv, "help") == 0)
1181                 usage();
1182         fprintf(stderr, "Command \"%s\" is unknown, try \"ip xfrm policy help\".\n", *argv);
1183         exit(-1);
1184 }