1/* $USAGI: $ */ 2 3/* 4 * Copyright (C)2004 USAGI/WIDE Project 5 * 6 * This program is free software; you can redistribute it and/or modify 7 * it under the terms of the GNU General Public License as published by 8 * the Free Software Foundation; either version 2 of the License, or 9 * (at your option) any later version. 10 * 11 * This program is distributed in the hope that it will be useful, 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 * GNU General Public License for more details. 15 * 16 * You should have received a copy of the GNU General Public License 17 * along with this program; if not, write to the Free Software 18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 19 */ 20/* 21 * based on iproute.c 22 */ 23/* 24 * Authors: 25 * Masahide NAKAMURA @USAGI 26 */ 27 28#include <stdio.h> 29#include <stdlib.h> 30#include <string.h> 31#include <netdb.h> 32#include <linux/xfrm.h> 33#include "utils.h" 34#include "xfrm.h" 35#include "ip_common.h" 36 37//#define NLMSG_DELETEALL_BUF_SIZE (4096-512) 38#define NLMSG_DELETEALL_BUF_SIZE 8192 39 40/* 41 * Receiving buffer defines: 42 * nlmsg 43 * data = struct xfrm_usersa_info 44 * rtattr 45 * rtattr 46 * ... (max count of rtattr is XFRM_MAX+1 47 * 48 * each rtattr data = struct xfrm_algo(dynamic size) or xfrm_address_t 49 */ 50#define NLMSG_BUF_SIZE 4096 51#define RTA_BUF_SIZE 2048 52#define XFRM_ALGO_KEY_BUF_SIZE 512 53#define CTX_BUF_SIZE 256 54 55static void usage(void) __attribute__((noreturn)); 56 57static void usage(void) 58{ 59 fprintf(stderr, "Usage: ip xfrm state { add | update } ID [ ALGO-LIST ] [ mode MODE ]\n"); 60 fprintf(stderr, " [ mark MARK [ mask MASK ] ] [ reqid REQID ] [ seq SEQ ]\n"); 61 fprintf(stderr, " [ replay-window SIZE ] [ replay-seq SEQ ] [ replay-oseq SEQ ]\n"); 62 fprintf(stderr, " [ flag FLAG-LIST ] [ sel SELECTOR ] [ LIMIT-LIST ] [ encap ENCAP ]\n"); 63 fprintf(stderr, " [ coa ADDR[/PLEN] ] [ ctx CTX ]\n"); 64 fprintf(stderr, "Usage: ip xfrm state allocspi ID [ mode MODE ] [ mark MARK [ mask MASK ] ]\n"); 65 fprintf(stderr, " [ reqid REQID ] [ seq SEQ ] [ min SPI max SPI ]\n"); 66 fprintf(stderr, "Usage: ip xfrm state { delete | get } ID [ mark MARK [ mask MASK ] ]\n"); 67 fprintf(stderr, "Usage: ip xfrm state { deleteall | list } [ ID ] [ mode MODE ] [ reqid REQID ]\n"); 68 fprintf(stderr, " [ flag FLAG-LIST ]\n"); 69 fprintf(stderr, "Usage: ip xfrm state flush [ proto XFRM-PROTO ]\n"); 70 fprintf(stderr, "Usage: ip xfrm state count\n"); 71 fprintf(stderr, "ID := [ src ADDR ] [ dst ADDR ] [ proto XFRM-PROTO ] [ spi SPI ]\n"); 72 fprintf(stderr, "XFRM-PROTO := "); 73 fprintf(stderr, "%s | ", strxf_xfrmproto(IPPROTO_ESP)); 74 fprintf(stderr, "%s | ", strxf_xfrmproto(IPPROTO_AH)); 75 fprintf(stderr, "%s | ", strxf_xfrmproto(IPPROTO_COMP)); 76 fprintf(stderr, "%s | ", strxf_xfrmproto(IPPROTO_ROUTING)); 77 fprintf(stderr, "%s\n", strxf_xfrmproto(IPPROTO_DSTOPTS)); 78 fprintf(stderr, "ALGO-LIST := [ ALGO-LIST ] ALGO\n"); 79 fprintf(stderr, "ALGO := { "); 80 fprintf(stderr, "%s | ", strxf_algotype(XFRMA_ALG_CRYPT)); 81 fprintf(stderr, "%s | ", strxf_algotype(XFRMA_ALG_AUTH)); 82 fprintf(stderr, "%s", strxf_algotype(XFRMA_ALG_COMP)); 83 fprintf(stderr, " } ALGO-NAME ALGO-KEY |\n"); 84 fprintf(stderr, " %s", strxf_algotype(XFRMA_ALG_AEAD)); 85 fprintf(stderr, " ALGO-NAME ALGO-KEY ALGO-ICV-LEN |\n"); 86 fprintf(stderr, " %s", strxf_algotype(XFRMA_ALG_AUTH_TRUNC)); 87 fprintf(stderr, " ALGO-NAME ALGO-KEY ALGO-TRUNC-LEN\n"); 88 fprintf(stderr, "MODE := transport | tunnel | ro | in_trigger | beet\n"); 89 fprintf(stderr, "FLAG-LIST := [ FLAG-LIST ] FLAG\n"); 90 fprintf(stderr, "FLAG := noecn | decap-dscp | nopmtudisc | wildrecv | icmp | af-unspec | align4\n"); 91 fprintf(stderr, "SELECTOR := [ src ADDR[/PLEN] ] [ dst ADDR[/PLEN] ] [ dev DEV ] [ UPSPEC ]\n"); 92 fprintf(stderr, "UPSPEC := proto { { "); 93 fprintf(stderr, "%s | ", strxf_proto(IPPROTO_TCP)); 94 fprintf(stderr, "%s | ", strxf_proto(IPPROTO_UDP)); 95 fprintf(stderr, "%s | ", strxf_proto(IPPROTO_SCTP)); 96 fprintf(stderr, "%s", strxf_proto(IPPROTO_DCCP)); 97 fprintf(stderr, " } [ sport PORT ] [ dport PORT ] |\n"); 98 fprintf(stderr, " { "); 99 fprintf(stderr, "%s | ", strxf_proto(IPPROTO_ICMP)); 100 fprintf(stderr, "%s | ", strxf_proto(IPPROTO_ICMPV6)); 101 fprintf(stderr, "%s", strxf_proto(IPPROTO_MH)); 102 fprintf(stderr, " } [ type NUMBER ] [ code NUMBER ] |\n"); 103 fprintf(stderr, " %s", strxf_proto(IPPROTO_GRE)); 104 fprintf(stderr, " [ key { DOTTED-QUAD | NUMBER } ] | PROTO }\n"); 105 fprintf(stderr, "LIMIT-LIST := [ LIMIT-LIST ] limit LIMIT\n"); 106 fprintf(stderr, "LIMIT := { time-soft | time-hard | time-use-soft | time-use-hard } SECONDS |\n"); 107 fprintf(stderr, " { byte-soft | byte-hard } SIZE | { packet-soft | packet-hard } COUNT\n"); 108 fprintf(stderr, "ENCAP := { espinudp | espinudp-nonike } SPORT DPORT OADDR\n"); 109 110 exit(-1); 111} 112 113static int xfrm_algo_parse(struct xfrm_algo *alg, enum xfrm_attr_type_t type, 114 char *name, char *key, char *buf, int max) 115{ 116 int len; 117 int slen = strlen(key); 118 119#if 0 120 /* XXX: verifying both name and key is required! */ 121 fprintf(stderr, "warning: ALGO-NAME/ALGO-KEY will send to kernel promiscuously! (verifying them isn't implemented yet)\n"); 122#endif 123 124 strncpy(alg->alg_name, name, sizeof(alg->alg_name)); 125 126 if (slen > 2 && strncmp(key, "0x", 2) == 0) { 127 /* split two chars "0x" from the top */ 128 char *p = key + 2; 129 int plen = slen - 2; 130 int i; 131 int j; 132 133 /* Converting hexadecimal numbered string into real key; 134 * Convert each two chars into one char(value). If number 135 * of the length is odd, add zero on the top for rounding. 136 */ 137 138 /* calculate length of the converted values(real key) */ 139 len = (plen + 1) / 2; 140 if (len > max) 141 invarg("\"ALGO-KEY\" makes buffer overflow\n", key); 142 143 for (i = - (plen % 2), j = 0; j < len; i += 2, j++) { 144 char vbuf[3]; 145 __u8 val; 146 147 vbuf[0] = i >= 0 ? p[i] : '0'; 148 vbuf[1] = p[i + 1]; 149 vbuf[2] = '\0'; 150 151 if (get_u8(&val, vbuf, 16)) 152 invarg("\"ALGO-KEY\" is invalid", key); 153 154 buf[j] = val; 155 } 156 } else { 157 len = slen; 158 if (len > 0) { 159 if (len > max) 160 invarg("\"ALGO-KEY\" makes buffer overflow\n", key); 161 162 strncpy(buf, key, len); 163 } 164 } 165 166 alg->alg_key_len = len * 8; 167 168 return 0; 169} 170 171static int xfrm_seq_parse(__u32 *seq, int *argcp, char ***argvp) 172{ 173 int argc = *argcp; 174 char **argv = *argvp; 175 176 if (get_u32(seq, *argv, 0)) 177 invarg("\"SEQ\" is invalid", *argv); 178 179 *seq = htonl(*seq); 180 181 *argcp = argc; 182 *argvp = argv; 183 184 return 0; 185} 186 187static int xfrm_state_flag_parse(__u8 *flags, int *argcp, char ***argvp) 188{ 189 int argc = *argcp; 190 char **argv = *argvp; 191 int len = strlen(*argv); 192 193 if (len > 2 && strncmp(*argv, "0x", 2) == 0) { 194 __u8 val = 0; 195 196 if (get_u8(&val, *argv, 16)) 197 invarg("\"FLAG\" is invalid", *argv); 198 *flags = val; 199 } else { 200 while (1) { 201 if (strcmp(*argv, "noecn") == 0) 202 *flags |= XFRM_STATE_NOECN; 203 else if (strcmp(*argv, "decap-dscp") == 0) 204 *flags |= XFRM_STATE_DECAP_DSCP; 205 else if (strcmp(*argv, "nopmtudisc") == 0) 206 *flags |= XFRM_STATE_NOPMTUDISC; 207 else if (strcmp(*argv, "wildrecv") == 0) 208 *flags |= XFRM_STATE_WILDRECV; 209 else if (strcmp(*argv, "icmp") == 0) 210 *flags |= XFRM_STATE_ICMP; 211 else if (strcmp(*argv, "af-unspec") == 0) 212 *flags |= XFRM_STATE_AF_UNSPEC; 213 else if (strcmp(*argv, "align4") == 0) 214 *flags |= XFRM_STATE_ALIGN4; 215 else { 216 PREV_ARG(); /* back track */ 217 break; 218 } 219 220 if (!NEXT_ARG_OK()) 221 break; 222 NEXT_ARG(); 223 } 224 } 225 226 *argcp = argc; 227 *argvp = argv; 228 229 return 0; 230} 231 232static int xfrm_state_modify(int cmd, unsigned flags, int argc, char **argv) 233{ 234 struct rtnl_handle rth; 235 struct { 236 struct nlmsghdr n; 237 struct xfrm_usersa_info xsinfo; 238 char buf[RTA_BUF_SIZE]; 239 } req; 240 struct xfrm_replay_state replay; 241 char *idp = NULL; 242 char *aeadop = NULL; 243 char *ealgop = NULL; 244 char *aalgop = NULL; 245 char *calgop = NULL; 246 char *coap = NULL; 247 char *sctxp = NULL; 248 struct xfrm_mark mark = {0, 0}; 249 struct { 250 struct xfrm_user_sec_ctx sctx; 251 char str[CTX_BUF_SIZE]; 252 } ctx; 253 254 memset(&req, 0, sizeof(req)); 255 memset(&replay, 0, sizeof(replay)); 256 memset(&ctx, 0, sizeof(ctx)); 257 258 req.n.nlmsg_len = NLMSG_LENGTH(sizeof(req.xsinfo)); 259 req.n.nlmsg_flags = NLM_F_REQUEST|flags; 260 req.n.nlmsg_type = cmd; 261 req.xsinfo.family = preferred_family; 262 263 req.xsinfo.lft.soft_byte_limit = XFRM_INF; 264 req.xsinfo.lft.hard_byte_limit = XFRM_INF; 265 req.xsinfo.lft.soft_packet_limit = XFRM_INF; 266 req.xsinfo.lft.hard_packet_limit = XFRM_INF; 267 268 while (argc > 0) { 269 if (strcmp(*argv, "mode") == 0) { 270 NEXT_ARG(); 271 xfrm_mode_parse(&req.xsinfo.mode, &argc, &argv); 272 } else if (strcmp(*argv, "mark") == 0) { 273 xfrm_parse_mark(&mark, &argc, &argv); 274 } else if (strcmp(*argv, "reqid") == 0) { 275 NEXT_ARG(); 276 xfrm_reqid_parse(&req.xsinfo.reqid, &argc, &argv); 277 } else if (strcmp(*argv, "seq") == 0) { 278 NEXT_ARG(); 279 xfrm_seq_parse(&req.xsinfo.seq, &argc, &argv); 280 } else if (strcmp(*argv, "replay-window") == 0) { 281 NEXT_ARG(); 282 if (get_u8(&req.xsinfo.replay_window, *argv, 0)) 283 invarg("\"replay-window\" value is invalid", *argv); 284 } else if (strcmp(*argv, "replay-seq") == 0) { 285 NEXT_ARG(); 286 if (get_u32(&replay.seq, *argv, 0)) 287 invarg("\"replay-seq\" value is invalid", *argv); 288 } else if (strcmp(*argv, "replay-oseq") == 0) { 289 NEXT_ARG(); 290 if (get_u32(&replay.oseq, *argv, 0)) 291 invarg("\"replay-oseq\" value is invalid", *argv); 292 } else if (strcmp(*argv, "flag") == 0) { 293 NEXT_ARG(); 294 xfrm_state_flag_parse(&req.xsinfo.flags, &argc, &argv); 295 } else if (strcmp(*argv, "sel") == 0) { 296 NEXT_ARG(); 297 xfrm_selector_parse(&req.xsinfo.sel, &argc, &argv); 298 } else if (strcmp(*argv, "limit") == 0) { 299 NEXT_ARG(); 300 xfrm_lifetime_cfg_parse(&req.xsinfo.lft, &argc, &argv); 301 } else if (strcmp(*argv, "encap") == 0) { 302 struct xfrm_encap_tmpl encap; 303 inet_prefix oa; 304 NEXT_ARG(); 305 xfrm_encap_type_parse(&encap.encap_type, &argc, &argv); 306 NEXT_ARG(); 307 if (get_u16(&encap.encap_sport, *argv, 0)) 308 invarg("\"encap\" sport value is invalid", *argv); 309 encap.encap_sport = htons(encap.encap_sport); 310 NEXT_ARG(); 311 if (get_u16(&encap.encap_dport, *argv, 0)) 312 invarg("\"encap\" dport value is invalid", *argv); 313 encap.encap_dport = htons(encap.encap_dport); 314 NEXT_ARG(); 315 get_addr(&oa, *argv, AF_UNSPEC); 316 memcpy(&encap.encap_oa, &oa.data, sizeof(encap.encap_oa)); 317 addattr_l(&req.n, sizeof(req.buf), XFRMA_ENCAP, 318 (void *)&encap, sizeof(encap)); 319 } else if (strcmp(*argv, "coa") == 0) { 320 inet_prefix coa; 321 xfrm_address_t xcoa; 322 323 if (coap) 324 duparg("coa", *argv); 325 coap = *argv; 326 327 NEXT_ARG(); 328 329 get_prefix(&coa, *argv, preferred_family); 330 if (coa.family == AF_UNSPEC) 331 invarg("\"coa\" address family is AF_UNSPEC", *argv); 332 if (coa.bytelen > sizeof(xcoa)) 333 invarg("\"coa\" address length is too large", *argv); 334 335 memset(&xcoa, 0, sizeof(xcoa)); 336 memcpy(&xcoa, &coa.data, coa.bytelen); 337 338 addattr_l(&req.n, sizeof(req.buf), XFRMA_COADDR, 339 (void *)&xcoa, sizeof(xcoa)); 340 } else if (strcmp(*argv, "ctx") == 0) { 341 char *context; 342 343 if (sctxp) 344 duparg("ctx", *argv); 345 sctxp = *argv; 346 347 NEXT_ARG(); 348 context = *argv; 349 350 xfrm_sctx_parse((char *)&ctx.str, context, &ctx.sctx); 351 addattr_l(&req.n, sizeof(req.buf), XFRMA_SEC_CTX, 352 (void *)&ctx, ctx.sctx.len); 353 } else { 354 /* try to assume ALGO */ 355 int type = xfrm_algotype_getbyname(*argv); 356 switch (type) { 357 case XFRMA_ALG_AEAD: 358 case XFRMA_ALG_CRYPT: 359 case XFRMA_ALG_AUTH: 360 case XFRMA_ALG_AUTH_TRUNC: 361 case XFRMA_ALG_COMP: 362 { 363 /* ALGO */ 364 struct { 365 union { 366 struct xfrm_algo alg; 367 struct xfrm_algo_aead aead; 368 struct xfrm_algo_auth auth; 369 } u; 370 char buf[XFRM_ALGO_KEY_BUF_SIZE]; 371 } alg = {}; 372 int len; 373 __u32 icvlen, trunclen; 374 char *name; 375 char *key; 376 char *buf; 377 378 switch (type) { 379 case XFRMA_ALG_AEAD: 380 if (aeadop) 381 duparg("ALGO-TYPE", *argv); 382 aeadop = *argv; 383 break; 384 case XFRMA_ALG_CRYPT: 385 if (ealgop) 386 duparg("ALGO-TYPE", *argv); 387 ealgop = *argv; 388 break; 389 case XFRMA_ALG_AUTH: 390 case XFRMA_ALG_AUTH_TRUNC: 391 if (aalgop) 392 duparg("ALGO-TYPE", *argv); 393 aalgop = *argv; 394 break; 395 case XFRMA_ALG_COMP: 396 if (calgop) 397 duparg("ALGO-TYPE", *argv); 398 calgop = *argv; 399 break; 400 default: 401 /* not reached */ 402 invarg("\"ALGO-TYPE\" is invalid\n", *argv); 403 } 404 405 if (!NEXT_ARG_OK()) 406 missarg("ALGO-NAME"); 407 NEXT_ARG(); 408 name = *argv; 409 410 if (!NEXT_ARG_OK()) 411 missarg("ALGO-KEY"); 412 NEXT_ARG(); 413 key = *argv; 414 415 buf = alg.u.alg.alg_key; 416 len = sizeof(alg.u.alg); 417 418 switch (type) { 419 case XFRMA_ALG_AEAD: 420 if (!NEXT_ARG_OK()) 421 missarg("ALGO-ICV-LEN"); 422 NEXT_ARG(); 423 if (get_u32(&icvlen, *argv, 0)) 424 invarg("\"aead\" ICV length is invalid", 425 *argv); 426 alg.u.aead.alg_icv_len = icvlen; 427 428 buf = alg.u.aead.alg_key; 429 len = sizeof(alg.u.aead); 430 break; 431 case XFRMA_ALG_AUTH_TRUNC: 432 if (!NEXT_ARG_OK()) 433 missarg("ALGO-TRUNC-LEN"); 434 NEXT_ARG(); 435 if (get_u32(&trunclen, *argv, 0)) 436 invarg("\"auth\" trunc length is invalid", 437 *argv); 438 alg.u.auth.alg_trunc_len = trunclen; 439 440 buf = alg.u.auth.alg_key; 441 len = sizeof(alg.u.auth); 442 break; 443 } 444 445 xfrm_algo_parse((void *)&alg, type, name, key, 446 buf, sizeof(alg.buf)); 447 len += alg.u.alg.alg_key_len; 448 449 addattr_l(&req.n, sizeof(req.buf), type, 450 (void *)&alg, len); 451 break; 452 } 453 default: 454 /* try to assume ID */ 455 if (idp) 456 invarg("unknown", *argv); 457 idp = *argv; 458 459 /* ID */ 460 xfrm_id_parse(&req.xsinfo.saddr, &req.xsinfo.id, 461 &req.xsinfo.family, 0, &argc, &argv); 462 if (preferred_family == AF_UNSPEC) 463 preferred_family = req.xsinfo.family; 464 } 465 } 466 argc--; argv++; 467 } 468 469 if (replay.seq || replay.oseq) 470 addattr_l(&req.n, sizeof(req.buf), XFRMA_REPLAY_VAL, 471 (void *)&replay, sizeof(replay)); 472 473 if (!idp) { 474 fprintf(stderr, "Not enough information: \"ID\" is required\n"); 475 exit(1); 476 } 477 478 if (mark.m & mark.v) { 479 int r = addattr_l(&req.n, sizeof(req.buf), XFRMA_MARK, 480 (void *)&mark, sizeof(mark)); 481 if (r < 0) { 482 fprintf(stderr, "XFRMA_MARK failed\n"); 483 exit(1); 484 } 485 } 486 487 switch (req.xsinfo.mode) { 488 case XFRM_MODE_TRANSPORT: 489 case XFRM_MODE_TUNNEL: 490 if (!xfrm_xfrmproto_is_ipsec(req.xsinfo.id.proto)) { 491 fprintf(stderr, "\"mode\" is invalid with proto=%s\n", 492 strxf_xfrmproto(req.xsinfo.id.proto)); 493 exit(1); 494 } 495 break; 496 case XFRM_MODE_ROUTEOPTIMIZATION: 497 case XFRM_MODE_IN_TRIGGER: 498 if (!xfrm_xfrmproto_is_ro(req.xsinfo.id.proto)) { 499 fprintf(stderr, "\"mode\" is invalid with proto=%s\n", 500 strxf_xfrmproto(req.xsinfo.id.proto)); 501 exit(1); 502 } 503 if (req.xsinfo.id.spi != 0) { 504 fprintf(stderr, "\"spi\" must be 0 with proto=%s\n", 505 strxf_xfrmproto(req.xsinfo.id.proto)); 506 exit(1); 507 } 508 break; 509 default: 510 break; 511 } 512 513 if (aeadop || ealgop || aalgop || calgop) { 514 if (!xfrm_xfrmproto_is_ipsec(req.xsinfo.id.proto)) { 515 fprintf(stderr, "\"ALGO\" is invalid with proto=%s\n", 516 strxf_xfrmproto(req.xsinfo.id.proto)); 517 exit(1); 518 } 519 } else { 520 if (xfrm_xfrmproto_is_ipsec(req.xsinfo.id.proto)) { 521 fprintf(stderr, "\"ALGO\" is required with proto=%s\n", 522 strxf_xfrmproto(req.xsinfo.id.proto)); 523 exit (1); 524 } 525 } 526 527 if (coap) { 528 if (!xfrm_xfrmproto_is_ro(req.xsinfo.id.proto)) { 529 fprintf(stderr, "\"coa\" is invalid with proto=%s\n", 530 strxf_xfrmproto(req.xsinfo.id.proto)); 531 exit(1); 532 } 533 } else { 534 if (xfrm_xfrmproto_is_ro(req.xsinfo.id.proto)) { 535 fprintf(stderr, "\"coa\" is required with proto=%s\n", 536 strxf_xfrmproto(req.xsinfo.id.proto)); 537 exit (1); 538 } 539 } 540 541 if (rtnl_open_byproto(&rth, 0, NETLINK_XFRM) < 0) 542 exit(1); 543 544 if (req.xsinfo.family == AF_UNSPEC) 545 req.xsinfo.family = AF_INET; 546 547 if (rtnl_talk(&rth, &req.n, 0, 0, NULL, NULL, NULL) < 0) 548 exit(2); 549 550 rtnl_close(&rth); 551 552 return 0; 553} 554 555static int xfrm_state_allocspi(int argc, char **argv) 556{ 557 struct rtnl_handle rth; 558 struct { 559 struct nlmsghdr n; 560 struct xfrm_userspi_info xspi; 561 char buf[RTA_BUF_SIZE]; 562 } req; 563 char *idp = NULL; 564 char *minp = NULL; 565 char *maxp = NULL; 566 struct xfrm_mark mark = {0, 0}; 567 char res_buf[NLMSG_BUF_SIZE]; 568 struct nlmsghdr *res_n = (struct nlmsghdr *)res_buf; 569 570 memset(res_buf, 0, sizeof(res_buf)); 571 572 memset(&req, 0, sizeof(req)); 573 574 req.n.nlmsg_len = NLMSG_LENGTH(sizeof(req.xspi)); 575 req.n.nlmsg_flags = NLM_F_REQUEST; 576 req.n.nlmsg_type = XFRM_MSG_ALLOCSPI; 577 req.xspi.info.family = preferred_family; 578 579#if 0 580 req.xsinfo.lft.soft_byte_limit = XFRM_INF; 581 req.xsinfo.lft.hard_byte_limit = XFRM_INF; 582 req.xsinfo.lft.soft_packet_limit = XFRM_INF; 583 req.xsinfo.lft.hard_packet_limit = XFRM_INF; 584#endif 585 586 while (argc > 0) { 587 if (strcmp(*argv, "mode") == 0) { 588 NEXT_ARG(); 589 xfrm_mode_parse(&req.xspi.info.mode, &argc, &argv); 590 } else if (strcmp(*argv, "mark") == 0) { 591 xfrm_parse_mark(&mark, &argc, &argv); 592 } else if (strcmp(*argv, "reqid") == 0) { 593 NEXT_ARG(); 594 xfrm_reqid_parse(&req.xspi.info.reqid, &argc, &argv); 595 } else if (strcmp(*argv, "seq") == 0) { 596 NEXT_ARG(); 597 xfrm_seq_parse(&req.xspi.info.seq, &argc, &argv); 598 } else if (strcmp(*argv, "min") == 0) { 599 if (minp) 600 duparg("min", *argv); 601 minp = *argv; 602 603 NEXT_ARG(); 604 605 if (get_u32(&req.xspi.min, *argv, 0)) 606 invarg("\"min\" value is invalid", *argv); 607 } else if (strcmp(*argv, "max") == 0) { 608 if (maxp) 609 duparg("max", *argv); 610 maxp = *argv; 611 612 NEXT_ARG(); 613 614 if (get_u32(&req.xspi.max, *argv, 0)) 615 invarg("\"max\" value is invalid", *argv); 616 } else { 617 /* try to assume ID */ 618 if (idp) 619 invarg("unknown", *argv); 620 idp = *argv; 621 622 /* ID */ 623 xfrm_id_parse(&req.xspi.info.saddr, &req.xspi.info.id, 624 &req.xspi.info.family, 0, &argc, &argv); 625 if (req.xspi.info.id.spi) { 626 fprintf(stderr, "\"SPI\" must be zero\n"); 627 exit(1); 628 } 629 if (preferred_family == AF_UNSPEC) 630 preferred_family = req.xspi.info.family; 631 } 632 argc--; argv++; 633 } 634 635 if (!idp) { 636 fprintf(stderr, "Not enough information: \"ID\" is required\n"); 637 exit(1); 638 } 639 640 if (minp) { 641 if (!maxp) { 642 fprintf(stderr, "\"max\" is missing\n"); 643 exit(1); 644 } 645 if (req.xspi.min > req.xspi.max) { 646 fprintf(stderr, "\"min\" value is larger than \"max\" value\n"); 647 exit(1); 648 } 649 } else { 650 if (maxp) { 651 fprintf(stderr, "\"min\" is missing\n"); 652 exit(1); 653 } 654 655 /* XXX: Default value defined in PF_KEY; 656 * See kernel's net/key/af_key.c(pfkey_getspi). 657 */ 658 req.xspi.min = 0x100; 659 req.xspi.max = 0x0fffffff; 660 661 /* XXX: IPCOMP spi is 16-bits; 662 * See kernel's net/xfrm/xfrm_user(verify_userspi_info). 663 */ 664 if (req.xspi.info.id.proto == IPPROTO_COMP) 665 req.xspi.max = 0xffff; 666 } 667 668 if (mark.m & mark.v) { 669 int r = addattr_l(&req.n, sizeof(req.buf), XFRMA_MARK, 670 (void *)&mark, sizeof(mark)); 671 if (r < 0) { 672 fprintf(stderr, "XFRMA_MARK failed\n"); 673 exit(1); 674 } 675 } 676 677 if (rtnl_open_byproto(&rth, 0, NETLINK_XFRM) < 0) 678 exit(1); 679 680 if (req.xspi.info.family == AF_UNSPEC) 681 req.xspi.info.family = AF_INET; 682 683 684 if (rtnl_talk(&rth, &req.n, 0, 0, res_n, NULL, NULL) < 0) 685 exit(2); 686 687 if (xfrm_state_print(NULL, res_n, (void*)stdout) < 0) { 688 fprintf(stderr, "An error :-)\n"); 689 exit(1); 690 } 691 692 rtnl_close(&rth); 693 694 return 0; 695} 696 697static int xfrm_state_filter_match(struct xfrm_usersa_info *xsinfo) 698{ 699 if (!filter.use) 700 return 1; 701 702 if (filter.id_src_mask) 703 if (xfrm_addr_match(&xsinfo->saddr, &filter.xsinfo.saddr, 704 filter.id_src_mask)) 705 return 0; 706 if (filter.id_dst_mask) 707 if (xfrm_addr_match(&xsinfo->id.daddr, &filter.xsinfo.id.daddr, 708 filter.id_dst_mask)) 709 return 0; 710 if ((xsinfo->id.proto^filter.xsinfo.id.proto)&filter.id_proto_mask) 711 return 0; 712 if ((xsinfo->id.spi^filter.xsinfo.id.spi)&filter.id_spi_mask) 713 return 0; 714 if ((xsinfo->mode^filter.xsinfo.mode)&filter.mode_mask) 715 return 0; 716 if ((xsinfo->reqid^filter.xsinfo.reqid)&filter.reqid_mask) 717 return 0; 718 if (filter.state_flags_mask) 719 if ((xsinfo->flags & filter.xsinfo.flags) == 0) 720 return 0; 721 722 return 1; 723} 724 725int xfrm_state_print(const struct sockaddr_nl *who, struct nlmsghdr *n, 726 void *arg) 727{ 728 FILE *fp = (FILE*)arg; 729 struct rtattr * tb[XFRMA_MAX+1]; 730 struct rtattr * rta; 731 struct xfrm_usersa_info *xsinfo = NULL; 732 struct xfrm_user_expire *xexp = NULL; 733 struct xfrm_usersa_id *xsid = NULL; 734 int len = n->nlmsg_len; 735 736 if (n->nlmsg_type != XFRM_MSG_NEWSA && 737 n->nlmsg_type != XFRM_MSG_DELSA && 738 n->nlmsg_type != XFRM_MSG_UPDSA && 739 n->nlmsg_type != XFRM_MSG_EXPIRE) { 740 fprintf(stderr, "Not a state: %08x %08x %08x\n", 741 n->nlmsg_len, n->nlmsg_type, n->nlmsg_flags); 742 return 0; 743 } 744 745 if (n->nlmsg_type == XFRM_MSG_DELSA) { 746 /* Dont blame me for this .. Herbert made me do it */ 747 xsid = NLMSG_DATA(n); 748 len -= NLMSG_SPACE(sizeof(*xsid)); 749 } else if (n->nlmsg_type == XFRM_MSG_EXPIRE) { 750 xexp = NLMSG_DATA(n); 751 xsinfo = &xexp->state; 752 len -= NLMSG_SPACE(sizeof(*xexp)); 753 } else { 754 xexp = NULL; 755 xsinfo = NLMSG_DATA(n); 756 len -= NLMSG_SPACE(sizeof(*xsinfo)); 757 } 758 759 if (len < 0) { 760 fprintf(stderr, "BUG: wrong nlmsg len %d\n", len); 761 return -1; 762 } 763 764 if (xsinfo && !xfrm_state_filter_match(xsinfo)) 765 return 0; 766 767 if (n->nlmsg_type == XFRM_MSG_DELSA) 768 fprintf(fp, "Deleted "); 769 else if (n->nlmsg_type == XFRM_MSG_UPDSA) 770 fprintf(fp, "Updated "); 771 else if (n->nlmsg_type == XFRM_MSG_EXPIRE) 772 fprintf(fp, "Expired "); 773 774 if (n->nlmsg_type == XFRM_MSG_DELSA) 775 rta = XFRMSID_RTA(xsid); 776 else if (n->nlmsg_type == XFRM_MSG_EXPIRE) 777 rta = XFRMEXP_RTA(xexp); 778 else 779 rta = XFRMS_RTA(xsinfo); 780 781 parse_rtattr(tb, XFRMA_MAX, rta, len); 782 783 if (n->nlmsg_type == XFRM_MSG_DELSA) { 784 //xfrm_policy_id_print(); 785 786 if (!tb[XFRMA_SA]) { 787 fprintf(stderr, "Buggy XFRM_MSG_DELSA: no XFRMA_SA\n"); 788 return -1; 789 } 790 if (RTA_PAYLOAD(tb[XFRMA_SA]) < sizeof(*xsinfo)) { 791 fprintf(stderr, "Buggy XFRM_MSG_DELPOLICY: too short XFRMA_POLICY len\n"); 792 return -1; 793 } 794 xsinfo = RTA_DATA(tb[XFRMA_SA]); 795 } 796 797 xfrm_state_info_print(xsinfo, tb, fp, NULL, NULL); 798 799 if (n->nlmsg_type == XFRM_MSG_EXPIRE) { 800 fprintf(fp, "\t"); 801 fprintf(fp, "hard %u", xexp->hard); 802 fprintf(fp, "%s", _SL_); 803 } 804 805 if (oneline) 806 fprintf(fp, "\n"); 807 fflush(fp); 808 809 return 0; 810} 811 812static int xfrm_state_get_or_delete(int argc, char **argv, int delete) 813{ 814 struct rtnl_handle rth; 815 struct { 816 struct nlmsghdr n; 817 struct xfrm_usersa_id xsid; 818 char buf[RTA_BUF_SIZE]; 819 } req; 820 struct xfrm_id id; 821 char *idp = NULL; 822 struct xfrm_mark mark = {0, 0}; 823 824 memset(&req, 0, sizeof(req)); 825 826 req.n.nlmsg_len = NLMSG_LENGTH(sizeof(req.xsid)); 827 req.n.nlmsg_flags = NLM_F_REQUEST; 828 req.n.nlmsg_type = delete ? XFRM_MSG_DELSA : XFRM_MSG_GETSA; 829 req.xsid.family = preferred_family; 830 831 while (argc > 0) { 832 xfrm_address_t saddr; 833 834 if (strcmp(*argv, "mark") == 0) { 835 xfrm_parse_mark(&mark, &argc, &argv); 836 } else { 837 if (idp) 838 invarg("unknown", *argv); 839 idp = *argv; 840 841 /* ID */ 842 memset(&id, 0, sizeof(id)); 843 memset(&saddr, 0, sizeof(saddr)); 844 xfrm_id_parse(&saddr, &id, &req.xsid.family, 0, 845 &argc, &argv); 846 847 memcpy(&req.xsid.daddr, &id.daddr, sizeof(req.xsid.daddr)); 848 req.xsid.spi = id.spi; 849 req.xsid.proto = id.proto; 850 851 addattr_l(&req.n, sizeof(req.buf), XFRMA_SRCADDR, 852 (void *)&saddr, sizeof(saddr)); 853 } 854 855 argc--; argv++; 856 } 857 858 if (mark.m & mark.v) { 859 int r = addattr_l(&req.n, sizeof(req.buf), XFRMA_MARK, 860 (void *)&mark, sizeof(mark)); 861 if (r < 0) { 862 fprintf(stderr, "XFRMA_MARK failed\n"); 863 exit(1); 864 } 865 } 866 867 if (rtnl_open_byproto(&rth, 0, NETLINK_XFRM) < 0) 868 exit(1); 869 870 if (req.xsid.family == AF_UNSPEC) 871 req.xsid.family = AF_INET; 872 873 if (delete) { 874 if (rtnl_talk(&rth, &req.n, 0, 0, NULL, NULL, NULL) < 0) 875 exit(2); 876 } else { 877 char buf[NLMSG_BUF_SIZE]; 878 struct nlmsghdr *res_n = (struct nlmsghdr *)buf; 879 880 memset(buf, 0, sizeof(buf)); 881 882 if (rtnl_talk(&rth, &req.n, 0, 0, res_n, NULL, NULL) < 0) 883 exit(2); 884 885 if (xfrm_state_print(NULL, res_n, (void*)stdout) < 0) { 886 fprintf(stderr, "An error :-)\n"); 887 exit(1); 888 } 889 } 890 891 rtnl_close(&rth); 892 893 return 0; 894} 895 896/* 897 * With an existing state of nlmsg, make new nlmsg for deleting the state 898 * and store it to buffer. 899 */ 900static int xfrm_state_keep(const struct sockaddr_nl *who, 901 struct nlmsghdr *n, 902 void *arg) 903{ 904 struct xfrm_buffer *xb = (struct xfrm_buffer *)arg; 905 struct rtnl_handle *rth = xb->rth; 906 struct xfrm_usersa_info *xsinfo = NLMSG_DATA(n); 907 int len = n->nlmsg_len; 908 struct nlmsghdr *new_n; 909 struct xfrm_usersa_id *xsid; 910 911 if (n->nlmsg_type != XFRM_MSG_NEWSA) { 912 fprintf(stderr, "Not a state: %08x %08x %08x\n", 913 n->nlmsg_len, n->nlmsg_type, n->nlmsg_flags); 914 return 0; 915 } 916 917 len -= NLMSG_LENGTH(sizeof(*xsinfo)); 918 if (len < 0) { 919 fprintf(stderr, "BUG: wrong nlmsg len %d\n", len); 920 return -1; 921 } 922 923 if (!xfrm_state_filter_match(xsinfo)) 924 return 0; 925 926 if (xb->offset > xb->size) { 927 fprintf(stderr, "State buffer overflow\n"); 928 return -1; 929 } 930 931 new_n = (struct nlmsghdr *)(xb->buf + xb->offset); 932 new_n->nlmsg_len = NLMSG_LENGTH(sizeof(*xsid)); 933 new_n->nlmsg_flags = NLM_F_REQUEST; 934 new_n->nlmsg_type = XFRM_MSG_DELSA; 935 new_n->nlmsg_seq = ++rth->seq; 936 937 xsid = NLMSG_DATA(new_n); 938 xsid->family = xsinfo->family; 939 memcpy(&xsid->daddr, &xsinfo->id.daddr, sizeof(xsid->daddr)); 940 xsid->spi = xsinfo->id.spi; 941 xsid->proto = xsinfo->id.proto; 942 943 addattr_l(new_n, xb->size, XFRMA_SRCADDR, &xsinfo->saddr, 944 sizeof(xsid->daddr)); 945 946 xb->offset += new_n->nlmsg_len; 947 xb->nlmsg_count ++; 948 949 return 0; 950} 951 952static int xfrm_state_list_or_deleteall(int argc, char **argv, int deleteall) 953{ 954 char *idp = NULL; 955 struct rtnl_handle rth; 956 957 if(argc > 0) 958 filter.use = 1; 959 filter.xsinfo.family = preferred_family; 960 961 while (argc > 0) { 962 if (strcmp(*argv, "mode") == 0) { 963 NEXT_ARG(); 964 xfrm_mode_parse(&filter.xsinfo.mode, &argc, &argv); 965 966 filter.mode_mask = XFRM_FILTER_MASK_FULL; 967 968 } else if (strcmp(*argv, "reqid") == 0) { 969 NEXT_ARG(); 970 xfrm_reqid_parse(&filter.xsinfo.reqid, &argc, &argv); 971 972 filter.reqid_mask = XFRM_FILTER_MASK_FULL; 973 974 } else if (strcmp(*argv, "flag") == 0) { 975 NEXT_ARG(); 976 xfrm_state_flag_parse(&filter.xsinfo.flags, &argc, &argv); 977 978 filter.state_flags_mask = XFRM_FILTER_MASK_FULL; 979 980 } else { 981 if (idp) 982 invarg("unknown", *argv); 983 idp = *argv; 984 985 /* ID */ 986 xfrm_id_parse(&filter.xsinfo.saddr, &filter.xsinfo.id, 987 &filter.xsinfo.family, 1, &argc, &argv); 988 if (preferred_family == AF_UNSPEC) 989 preferred_family = filter.xsinfo.family; 990 } 991 argc--; argv++; 992 } 993 994 if (rtnl_open_byproto(&rth, 0, NETLINK_XFRM) < 0) 995 exit(1); 996 997 if (deleteall) { 998 struct xfrm_buffer xb; 999 char buf[NLMSG_DELETEALL_BUF_SIZE]; 1000 int i; 1001 1002 xb.buf = buf; 1003 xb.size = sizeof(buf); 1004 xb.rth = &rth; 1005 1006 for (i = 0; ; i++) { 1007 xb.offset = 0; 1008 xb.nlmsg_count = 0; 1009 1010 if (show_stats > 1) 1011 fprintf(stderr, "Delete-all round = %d\n", i); 1012 1013 if (rtnl_wilddump_request(&rth, preferred_family, XFRM_MSG_GETSA) < 0) { 1014 perror("Cannot send dump request"); 1015 exit(1); 1016 } 1017 1018 if (rtnl_dump_filter(&rth, xfrm_state_keep, &xb, NULL, NULL) < 0) { 1019 fprintf(stderr, "Delete-all terminated\n"); 1020 exit(1); 1021 } 1022 if (xb.nlmsg_count == 0) { 1023 if (show_stats > 1) 1024 fprintf(stderr, "Delete-all completed\n"); 1025 break; 1026 } 1027 1028 if (rtnl_send_check(&rth, xb.buf, xb.offset) < 0) { 1029 perror("Failed to send delete-all request\n"); 1030 exit(1); 1031 } 1032 if (show_stats > 1) 1033 fprintf(stderr, "Delete-all nlmsg count = %d\n", xb.nlmsg_count); 1034 1035 xb.offset = 0; 1036 xb.nlmsg_count = 0; 1037 } 1038 1039 } else { 1040 if (rtnl_wilddump_request(&rth, preferred_family, XFRM_MSG_GETSA) < 0) { 1041 perror("Cannot send dump request"); 1042 exit(1); 1043 } 1044 1045 if (rtnl_dump_filter(&rth, xfrm_state_print, stdout, NULL, NULL) < 0) { 1046 fprintf(stderr, "Dump terminated\n"); 1047 exit(1); 1048 } 1049 } 1050 1051 rtnl_close(&rth); 1052 1053 exit(0); 1054} 1055 1056int print_sadinfo(struct nlmsghdr *n, void *arg) 1057{ 1058 FILE *fp = (FILE*)arg; 1059 __u32 *f = NLMSG_DATA(n); 1060 struct rtattr *tb[XFRMA_SAD_MAX+1]; 1061 struct rtattr *rta; 1062 __u32 *cnt; 1063 1064 int len = n->nlmsg_len; 1065 1066 len -= NLMSG_LENGTH(sizeof(__u32)); 1067 if (len < 0) { 1068 fprintf(stderr, "SADinfo: Wrong len %d\n", len); 1069 return -1; 1070 } 1071 1072 rta = XFRMSAPD_RTA(f); 1073 parse_rtattr(tb, XFRMA_SAD_MAX, rta, len); 1074 1075 if (tb[XFRMA_SAD_CNT]) { 1076 fprintf(fp,"\t SAD"); 1077 cnt = (__u32 *)RTA_DATA(tb[XFRMA_SAD_CNT]); 1078 fprintf(fp," count %d", *cnt); 1079 } else { 1080 fprintf(fp,"BAD SAD info returned\n"); 1081 return -1; 1082 } 1083 1084 if (show_stats) { 1085 if (tb[XFRMA_SAD_HINFO]) { 1086 struct xfrmu_sadhinfo *si; 1087 1088 if (RTA_PAYLOAD(tb[XFRMA_SAD_HINFO]) < sizeof(*si)) { 1089 fprintf(fp,"BAD SAD length returned\n"); 1090 return -1; 1091 } 1092 1093 si = RTA_DATA(tb[XFRMA_SAD_HINFO]); 1094 fprintf(fp," (buckets "); 1095 fprintf(fp,"count %d", si->sadhcnt); 1096 fprintf(fp," Max %d", si->sadhmcnt); 1097 fprintf(fp,")"); 1098 } 1099 } 1100 fprintf(fp,"\n"); 1101 1102 return 0; 1103} 1104 1105static int xfrm_sad_getinfo(int argc, char **argv) 1106{ 1107 struct rtnl_handle rth; 1108 struct { 1109 struct nlmsghdr n; 1110 __u32 flags; 1111 char ans[64]; 1112 } req; 1113 1114 memset(&req, 0, sizeof(req)); 1115 req.n.nlmsg_len = NLMSG_LENGTH(sizeof(req.flags)); 1116 req.n.nlmsg_flags = NLM_F_REQUEST; 1117 req.n.nlmsg_type = XFRM_MSG_GETSADINFO; 1118 req.flags = 0XFFFFFFFF; 1119 1120 if (rtnl_open_byproto(&rth, 0, NETLINK_XFRM) < 0) 1121 exit(1); 1122 1123 if (rtnl_talk(&rth, &req.n, 0, 0, &req.n, NULL, NULL) < 0) 1124 exit(2); 1125 1126 print_sadinfo(&req.n, (void*)stdout); 1127 1128 rtnl_close(&rth); 1129 1130 return 0; 1131} 1132 1133static int xfrm_state_flush(int argc, char **argv) 1134{ 1135 struct rtnl_handle rth; 1136 struct { 1137 struct nlmsghdr n; 1138 struct xfrm_usersa_flush xsf; 1139 } req; 1140 char *protop = NULL; 1141 1142 memset(&req, 0, sizeof(req)); 1143 1144 req.n.nlmsg_len = NLMSG_LENGTH(sizeof(req.xsf)); 1145 req.n.nlmsg_flags = NLM_F_REQUEST; 1146 req.n.nlmsg_type = XFRM_MSG_FLUSHSA; 1147 req.xsf.proto = 0; 1148 1149 while (argc > 0) { 1150 if (strcmp(*argv, "proto") == 0) { 1151 int ret; 1152 1153 if (protop) 1154 duparg("proto", *argv); 1155 protop = *argv; 1156 1157 NEXT_ARG(); 1158 1159 ret = xfrm_xfrmproto_getbyname(*argv); 1160 if (ret < 0) 1161 invarg("\"XFRM-PROTO\" is invalid", *argv); 1162 1163 req.xsf.proto = (__u8)ret; 1164 } else 1165 invarg("unknown", *argv); 1166 1167 argc--; argv++; 1168 } 1169 1170 if (rtnl_open_byproto(&rth, 0, NETLINK_XFRM) < 0) 1171 exit(1); 1172 1173 if (show_stats > 1) 1174 fprintf(stderr, "Flush state proto=%s\n", 1175 strxf_xfrmproto(req.xsf.proto)); 1176 1177 if (rtnl_talk(&rth, &req.n, 0, 0, NULL, NULL, NULL) < 0) 1178 exit(2); 1179 1180 rtnl_close(&rth); 1181 1182 return 0; 1183} 1184 1185int do_xfrm_state(int argc, char **argv) 1186{ 1187 if (argc < 1) 1188 return xfrm_state_list_or_deleteall(0, NULL, 0); 1189 1190 if (matches(*argv, "add") == 0) 1191 return xfrm_state_modify(XFRM_MSG_NEWSA, 0, 1192 argc-1, argv+1); 1193 if (matches(*argv, "update") == 0) 1194 return xfrm_state_modify(XFRM_MSG_UPDSA, 0, 1195 argc-1, argv+1); 1196 if (matches(*argv, "allocspi") == 0) 1197 return xfrm_state_allocspi(argc-1, argv+1); 1198 if (matches(*argv, "delete") == 0) 1199 return xfrm_state_get_or_delete(argc-1, argv+1, 1); 1200 if (matches(*argv, "deleteall") == 0 || matches(*argv, "delall") == 0) 1201 return xfrm_state_list_or_deleteall(argc-1, argv+1, 1); 1202 if (matches(*argv, "list") == 0 || matches(*argv, "show") == 0 1203 || matches(*argv, "lst") == 0) 1204 return xfrm_state_list_or_deleteall(argc-1, argv+1, 0); 1205 if (matches(*argv, "get") == 0) 1206 return xfrm_state_get_or_delete(argc-1, argv+1, 0); 1207 if (matches(*argv, "flush") == 0) 1208 return xfrm_state_flush(argc-1, argv+1); 1209 if (matches(*argv, "count") == 0) { 1210 return xfrm_sad_getinfo(argc, argv); 1211 } 1212 if (matches(*argv, "help") == 0) 1213 usage(); 1214 fprintf(stderr, "Command \"%s\" is unknown, try \"ip xfrm state help\".\n", *argv); 1215 exit(-1); 1216} 1217