1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 /* 22 * Copyright 2007 Sun Microsystems, Inc. All rights reserved. 23 * Use is subject to license terms. 24 */ 25 26 /* 27 * NOTE:I'm trying to use "struct sadb_foo" instead of "sadb_foo_t" 28 * as a maximal PF_KEY portability test. 29 * 30 * Also, this is a deliberately single-threaded app, also for portability 31 * to systems without POSIX threads. 32 */ 33 34 #pragma ident "%Z%%M% %I% %E% SMI" 35 36 37 #include <sys/types.h> 38 #include <sys/stat.h> 39 #include <sys/socket.h> 40 #include <sys/sysmacros.h> 41 #include <sys/fcntl.h> 42 #include <net/pfkeyv2.h> 43 #include <arpa/inet.h> 44 #include <netinet/in.h> 45 #include <sys/uio.h> 46 47 #include <syslog.h> 48 #include <signal.h> 49 #include <unistd.h> 50 #include <limits.h> 51 #include <stdlib.h> 52 #include <stdio.h> 53 #include <stdarg.h> 54 #include <netdb.h> 55 #include <pwd.h> 56 #include <errno.h> 57 #include <libintl.h> 58 #include <locale.h> 59 #include <fcntl.h> 60 #include <strings.h> 61 #include <ctype.h> 62 63 #include <ipsec_util.h> 64 65 static int keysock; 66 static uint32_t seq; 67 static pid_t mypid; 68 static boolean_t vflag = B_FALSE; /* Verbose? */ 69 static boolean_t cflag = B_FALSE; /* Check Only */ 70 71 char *my_fmri = NULL; 72 FILE *debugfile = stdout; 73 74 #define MAX_GET_SIZE 1024 75 /* 76 * WARN() and ERROR() do the same thing really, with ERROR() the function 77 * that prints the error buffer needs to be called at the end of a code block 78 * This will print out all accumulated errors before bailing. The WARN() 79 * macro calls handle_errors() in such a way that it prints the message 80 * then continues. 81 * If the FATAL() macro used call handle_errors() immediately. 82 */ 83 #define ERROR(x, y, z) x = record_error(x, y, z) 84 #define ERROR1(w, x, y, z) w = record_error(w, x, y, z) 85 #define ERROR2(v, w, x, y, z) v = record_error(v, w, x, y, z) 86 #define WARN(x, y, z) ERROR(x, y, z);\ 87 handle_errors(x, NULL, B_FALSE, B_FALSE); x = NULL 88 #define WARN1(w, x, y, z) ERROR1(w, x, y, z);\ 89 handle_errors(w, NULL, B_FALSE, B_FALSE); w = NULL 90 #define WARN2(v, w, x, y, z) ERROR2(v, w, x, y, z);\ 91 handle_errors(v, NULL, B_FALSE, B_FALSE); v = NULL 92 #define FATAL(x, y, z) ERROR(x, y, z);\ 93 handle_errors(x, y, B_TRUE, B_TRUE) 94 #define FATAL1(w, x, y, z) ERROR1(w, x, y, z);\ 95 handle_errors(w, x, B_TRUE, B_TRUE) 96 97 /* Defined as a uint64_t array for alignment purposes. */ 98 static uint64_t get_buffer[MAX_GET_SIZE]; 99 100 /* 101 * Create/Grow a buffer large enough to hold error messages. If *ebuf 102 * is not NULL then it will contain a copy of the command line that 103 * triggered the error/warning, copy this into a new buffer or 104 * append new messages to the existing buffer. 105 */ 106 /*PRINTFLIKE1*/ 107 char * 108 record_error(char *ep, char *ebuf, char *fmt, ...) 109 { 110 char *err_ptr; 111 char tmp_buff[1024]; 112 va_list ap; 113 int length = 0; 114 err_ptr = ep; 115 116 va_start(ap, fmt); 117 (void) vsnprintf(tmp_buff, sizeof (tmp_buff), fmt, ap); 118 va_end(ap); 119 120 if (ep == NULL) { 121 /* 122 * This is the first error to record, get a 123 * new buffer, copy in the command line that 124 * triggered this error/warning. 125 */ 126 if (ebuf != NULL) { 127 length = strlen(ebuf); 128 err_ptr = calloc(length, sizeof (char)); 129 if (err_ptr == NULL) 130 Bail("calloc() failed"); 131 (void) strlcpy(err_ptr, ebuf, length); 132 } 133 } else { 134 length = strlen(ep); 135 } 136 length += strlen(tmp_buff); 137 /* There is a new line character */ 138 length++; 139 err_ptr = realloc(err_ptr, length); 140 if (err_ptr == NULL) 141 Bail("realloc() failure"); 142 (void) strlcat(err_ptr, tmp_buff, length); 143 return (err_ptr); 144 } 145 146 /* 147 * Print usage message. 148 */ 149 static void 150 usage(void) 151 { 152 if (!interactive) { 153 (void) fprintf(stderr, gettext("Usage:\t" 154 "ipseckey [ -nvp ] | cmd [sa_type] [extfield value]*\n")); 155 (void) fprintf(stderr, 156 gettext("\tipseckey [ -nvp ] -f infile\n")); 157 (void) fprintf(stderr, 158 gettext("\tipseckey [ -nvp ] -s outfile\n")); 159 } 160 EXIT_FATAL(NULL); 161 } 162 163 164 /* 165 * Print out any errors, tidy up as required. 166 * error pointer ep will be free()'d 167 */ 168 void 169 handle_errors(char *ep, char *ebuf, boolean_t fatal, boolean_t done) 170 { 171 if (ep != NULL) { 172 if (my_fmri == NULL) { 173 /* 174 * For now suppress the errors when run from smf(5) 175 * because potentially sensitive information could 176 * end up in a publicly readable logfile. 177 */ 178 (void) fprintf(stdout, "%s\n", ep); 179 (void) fflush(stdout); 180 } 181 free(ep); 182 if (fatal) { 183 if (ebuf != NULL) { 184 free(ebuf); 185 } 186 /* reset command buffer */ 187 if (interactive) 188 longjmp(env, 1); 189 } else { 190 return; 191 } 192 } else { 193 /* 194 * No errors, if this is the last time that this function 195 * is called, free(ebuf) and reset command buffer. 196 */ 197 if (done) { 198 if (ebuf != NULL) { 199 free(ebuf); 200 } 201 /* reset command buffer */ 202 if (interactive) 203 longjmp(env, 1); 204 } 205 return; 206 } 207 } 208 209 /* 210 * Initialize a PF_KEY base message. 211 */ 212 static void 213 msg_init(struct sadb_msg *msg, uint8_t type, uint8_t satype) 214 { 215 msg->sadb_msg_version = PF_KEY_V2; 216 msg->sadb_msg_type = type; 217 msg->sadb_msg_errno = 0; 218 msg->sadb_msg_satype = satype; 219 /* For starters... */ 220 msg->sadb_msg_len = SADB_8TO64(sizeof (*msg)); 221 msg->sadb_msg_reserved = 0; 222 msg->sadb_msg_seq = ++seq; 223 msg->sadb_msg_pid = mypid; 224 } 225 226 /* 227 * parseXXX and rparseXXX commands parse input and convert them to PF_KEY 228 * field values, or do the reverse for the purposes of saving the SA tables. 229 * (See the save_XXX functions.) 230 */ 231 232 #define CMD_NONE 0 233 #define CMD_UPDATE 2 234 #define CMD_ADD 3 235 #define CMD_DELETE 4 236 #define CMD_GET 5 237 #define CMD_FLUSH 9 238 #define CMD_DUMP 10 239 #define CMD_MONITOR 11 240 #define CMD_PMONITOR 12 241 #define CMD_QUIT 13 242 #define CMD_SAVE 14 243 #define CMD_HELP 15 244 245 /* 246 * Parse the command. 247 */ 248 static int 249 parsecmd(char *cmdstr) 250 { 251 static struct cmdtable { 252 char *cmd; 253 int token; 254 } table[] = { 255 /* 256 * Q: Do we want to do GETSPI? 257 * A: No, it's for automated key mgmt. only. Either that, 258 * or it isn't relevant until we support non IPsec SA types. 259 */ 260 {"update", CMD_UPDATE}, 261 {"add", CMD_ADD}, 262 {"delete", CMD_DELETE}, 263 {"get", CMD_GET}, 264 /* 265 * Q: And ACQUIRE and REGISTER and EXPIRE? 266 * A: not until we support non IPsec SA types. 267 */ 268 {"flush", CMD_FLUSH}, 269 {"dump", CMD_DUMP}, 270 {"monitor", CMD_MONITOR}, 271 {"passive_monitor", CMD_PMONITOR}, 272 {"pmonitor", CMD_PMONITOR}, 273 {"quit", CMD_QUIT}, 274 {"exit", CMD_QUIT}, 275 {"save", CMD_SAVE}, 276 {"help", CMD_HELP}, 277 {"?", CMD_HELP}, 278 {NULL, CMD_NONE} 279 }; 280 struct cmdtable *ct = table; 281 282 while (ct->cmd != NULL && strcmp(ct->cmd, cmdstr) != 0) 283 ct++; 284 return (ct->token); 285 } 286 287 /* 288 * Convert a number from a command line. I picked "u_longlong_t" for the 289 * number because we need the largest number available. Also, the strto<num> 290 * calls don't deal in units of uintNN_t. 291 */ 292 static u_longlong_t 293 parsenum(char *num, boolean_t bail, char *ebuf) 294 { 295 u_longlong_t rc = 0; 296 char *end = NULL; 297 char *ep = NULL; 298 299 if (num == NULL) { 300 FATAL(ep, ebuf, gettext("Unexpected end of command line," 301 " was expecting a number.\n")); 302 /* NOTREACHED */ 303 } 304 305 errno = 0; 306 rc = strtoull(num, &end, 0); 307 if (errno != 0 || end == num || *end != '\0') { 308 if (bail) { 309 ERROR1(ep, ebuf, gettext( 310 "Expecting a number, not \"%s\"!\n"), num); 311 } else { 312 /* 313 * -1, while not optimal, is sufficiently out of range 314 * for most of this function's applications when 315 * we don't just bail. 316 */ 317 return ((u_longlong_t)-1); 318 } 319 } 320 handle_errors(ep, NULL, B_FALSE, B_FALSE); 321 return (rc); 322 } 323 324 /* 325 * Parse and reverse parse a specific SA type (AH, ESP, etc.). 326 */ 327 static struct typetable { 328 char *type; 329 int token; 330 } type_table[] = { 331 {"all", SADB_SATYPE_UNSPEC}, 332 {"ah", SADB_SATYPE_AH}, 333 {"esp", SADB_SATYPE_ESP}, 334 /* PF_KEY NOTE: More to come if net/pfkeyv2.h gets updated. */ 335 {NULL, 0} /* Token value is irrelevant for this entry. */ 336 }; 337 338 339 static int 340 parsesatype(char *type, char *ebuf) 341 { 342 struct typetable *tt = type_table; 343 char *ep = NULL; 344 345 if (type == NULL) 346 return (SADB_SATYPE_UNSPEC); 347 348 while (tt->type != NULL && strcasecmp(tt->type, type) != 0) 349 tt++; 350 351 /* 352 * New SA types (including ones keysock maintains for user-land 353 * protocols) may be added, so parse a numeric value if possible. 354 */ 355 if (tt->type == NULL) { 356 tt->token = (int)parsenum(type, B_FALSE, ebuf); 357 if (tt->token == -1) { 358 ERROR1(ep, ebuf, gettext( 359 "Unknown SA type (%s).\n"), type); 360 tt->token = SADB_SATYPE_UNSPEC; 361 } 362 } 363 handle_errors(ep, NULL, B_FALSE, B_FALSE); 364 return (tt->token); 365 } 366 367 #define NEXTEOF 0 368 #define NEXTNONE 1 369 #define NEXTNUM 2 370 #define NEXTSTR 3 371 #define NEXTNUMSTR 4 372 #define NEXTADDR 5 373 #define NEXTHEX 6 374 #define NEXTIDENT 7 375 #define NEXTADDR4 8 376 #define NEXTADDR6 9 377 378 #define TOK_EOF 0 379 #define TOK_UNKNOWN 1 380 #define TOK_SPI 2 381 #define TOK_REPLAY 3 382 #define TOK_STATE 4 383 #define TOK_AUTHALG 5 384 #define TOK_ENCRALG 6 385 #define TOK_FLAGS 7 386 #define TOK_SOFT_ALLOC 8 387 #define TOK_SOFT_BYTES 9 388 #define TOK_SOFT_ADDTIME 10 389 #define TOK_SOFT_USETIME 11 390 #define TOK_HARD_ALLOC 12 391 #define TOK_HARD_BYTES 13 392 #define TOK_HARD_ADDTIME 14 393 #define TOK_HARD_USETIME 15 394 #define TOK_CURRENT_ALLOC 16 395 #define TOK_CURRENT_BYTES 17 396 #define TOK_CURRENT_ADDTIME 18 397 #define TOK_CURRENT_USETIME 19 398 #define TOK_SRCADDR 20 399 #define TOK_DSTADDR 21 400 #define TOK_PROXYADDR 22 401 #define TOK_AUTHKEY 23 402 #define TOK_ENCRKEY 24 403 #define TOK_SRCIDTYPE 25 404 #define TOK_DSTIDTYPE 26 405 #define TOK_DPD 27 406 #define TOK_SENS_LEVEL 28 407 #define TOK_SENS_MAP 29 408 #define TOK_INTEG_LEVEL 30 409 #define TOK_INTEG_MAP 31 410 #define TOK_SRCADDR6 32 411 #define TOK_DSTADDR6 33 412 #define TOK_PROXYADDR6 34 413 #define TOK_SRCPORT 35 414 #define TOK_DSTPORT 36 415 #define TOK_PROTO 37 416 #define TOK_ENCAP 38 417 #define TOK_NATLOC 39 418 #define TOK_NATREM 40 419 #define TOK_NATLPORT 41 420 #define TOK_NATRPORT 42 421 #define TOK_IPROTO 43 422 #define TOK_IDSTADDR 44 423 #define TOK_IDSTADDR6 45 424 #define TOK_ISRCPORT 46 425 #define TOK_IDSTPORT 47 426 427 static struct toktable { 428 char *string; 429 int token; 430 int next; 431 } tokens[] = { 432 /* "String", token value, next arg is */ 433 {"spi", TOK_SPI, NEXTNUM}, 434 {"replay", TOK_REPLAY, NEXTNUM}, 435 {"state", TOK_STATE, NEXTNUMSTR}, 436 {"auth_alg", TOK_AUTHALG, NEXTNUMSTR}, 437 {"authalg", TOK_AUTHALG, NEXTNUMSTR}, 438 {"encr_alg", TOK_ENCRALG, NEXTNUMSTR}, 439 {"encralg", TOK_ENCRALG, NEXTNUMSTR}, 440 {"flags", TOK_FLAGS, NEXTNUM}, 441 {"soft_alloc", TOK_SOFT_ALLOC, NEXTNUM}, 442 {"soft_bytes", TOK_SOFT_BYTES, NEXTNUM}, 443 {"soft_addtime", TOK_SOFT_ADDTIME, NEXTNUM}, 444 {"soft_usetime", TOK_SOFT_USETIME, NEXTNUM}, 445 {"hard_alloc", TOK_HARD_ALLOC, NEXTNUM}, 446 {"hard_bytes", TOK_HARD_BYTES, NEXTNUM}, 447 {"hard_addtime", TOK_HARD_ADDTIME, NEXTNUM}, 448 {"hard_usetime", TOK_HARD_USETIME, NEXTNUM}, 449 {"current_alloc", TOK_CURRENT_ALLOC, NEXTNUM}, 450 {"current_bytes", TOK_CURRENT_BYTES, NEXTNUM}, 451 {"current_addtime", TOK_CURRENT_ADDTIME, NEXTNUM}, 452 {"current_usetime", TOK_CURRENT_USETIME, NEXTNUM}, 453 454 {"saddr", TOK_SRCADDR, NEXTADDR}, 455 {"srcaddr", TOK_SRCADDR, NEXTADDR}, 456 {"src", TOK_SRCADDR, NEXTADDR}, 457 {"daddr", TOK_DSTADDR, NEXTADDR}, 458 {"dstaddr", TOK_DSTADDR, NEXTADDR}, 459 {"dst", TOK_DSTADDR, NEXTADDR}, 460 {"proxyaddr", TOK_PROXYADDR, NEXTADDR}, 461 {"proxy", TOK_PROXYADDR, NEXTADDR}, 462 {"innersrc", TOK_PROXYADDR, NEXTADDR}, 463 {"isrc", TOK_PROXYADDR, NEXTADDR}, 464 {"innerdst", TOK_IDSTADDR, NEXTADDR}, 465 {"idst", TOK_IDSTADDR, NEXTADDR}, 466 467 {"sport", TOK_SRCPORT, NEXTNUM}, 468 {"dport", TOK_DSTPORT, NEXTNUM}, 469 {"innersport", TOK_ISRCPORT, NEXTNUM}, 470 {"isport", TOK_ISRCPORT, NEXTNUM}, 471 {"innerdport", TOK_IDSTPORT, NEXTNUM}, 472 {"idport", TOK_IDSTPORT, NEXTNUM}, 473 {"proto", TOK_PROTO, NEXTNUM}, 474 {"ulp", TOK_PROTO, NEXTNUM}, 475 {"iproto", TOK_IPROTO, NEXTNUM}, 476 {"iulp", TOK_IPROTO, NEXTNUM}, 477 478 {"saddr6", TOK_SRCADDR6, NEXTADDR}, 479 {"srcaddr6", TOK_SRCADDR6, NEXTADDR}, 480 {"src6", TOK_SRCADDR6, NEXTADDR}, 481 {"daddr6", TOK_DSTADDR6, NEXTADDR}, 482 {"dstaddr6", TOK_DSTADDR6, NEXTADDR}, 483 {"dst6", TOK_DSTADDR6, NEXTADDR}, 484 {"proxyaddr6", TOK_PROXYADDR6, NEXTADDR}, 485 {"proxy6", TOK_PROXYADDR6, NEXTADDR}, 486 {"innersrc6", TOK_PROXYADDR6, NEXTADDR}, 487 {"isrc6", TOK_PROXYADDR6, NEXTADDR}, 488 {"innerdst6", TOK_IDSTADDR6, NEXTADDR}, 489 {"idst6", TOK_IDSTADDR6, NEXTADDR}, 490 491 {"authkey", TOK_AUTHKEY, NEXTHEX}, 492 {"encrkey", TOK_ENCRKEY, NEXTHEX}, 493 {"srcidtype", TOK_SRCIDTYPE, NEXTIDENT}, 494 {"dstidtype", TOK_DSTIDTYPE, NEXTIDENT}, 495 {"dpd", TOK_DPD, NEXTNUM}, 496 {"sens_level", TOK_SENS_LEVEL, NEXTNUM}, 497 {"sens_map", TOK_SENS_MAP, NEXTHEX}, 498 {"integ_level", TOK_INTEG_LEVEL, NEXTNUM}, 499 {"integ_map", TOK_INTEG_MAP, NEXTHEX}, 500 {"nat_loc", TOK_NATLOC, NEXTADDR}, 501 {"nat_rem", TOK_NATREM, NEXTADDR}, 502 {"nat_lport", TOK_NATLPORT, NEXTNUM}, 503 {"nat_rport", TOK_NATRPORT, NEXTNUM}, 504 {"encap", TOK_ENCAP, NEXTNUMSTR}, 505 {NULL, TOK_UNKNOWN, NEXTEOF} 506 }; 507 508 /* 509 * Q: Do I need stuff for proposals, combinations, supported algorithms, 510 * or SPI ranges? 511 * 512 * A: Probably not, but you never know. 513 * 514 * Parse out extension header type values. 515 */ 516 static int 517 parseextval(char *value, int *next) 518 { 519 struct toktable *tp; 520 521 if (value == NULL) 522 return (TOK_EOF); 523 524 for (tp = tokens; tp->string != NULL; tp++) 525 if (strcmp(value, tp->string) == 0) 526 break; 527 528 /* 529 * Since the OS controls what extensions are available, we don't have 530 * to parse numeric values here. 531 */ 532 533 *next = tp->next; 534 return (tp->token); 535 } 536 537 /* 538 * Parse possible state values. 539 */ 540 static uint8_t 541 parsestate(char *state, char *ebuf) 542 { 543 struct states { 544 char *state; 545 uint8_t retval; 546 } states[] = { 547 {"larval", SADB_SASTATE_LARVAL}, 548 {"mature", SADB_SASTATE_MATURE}, 549 {"dying", SADB_SASTATE_DYING}, 550 {"dead", SADB_SASTATE_DEAD}, 551 {NULL, 0} 552 }; 553 struct states *sp; 554 char *ep = NULL; 555 556 if (state == NULL) { 557 FATAL(ep, ebuf, "Unexpected end of command line " 558 "was expecting a state.\n"); 559 } 560 561 for (sp = states; sp->state != NULL; sp++) { 562 if (strcmp(sp->state, state) == 0) 563 return (sp->retval); 564 } 565 ERROR1(ep, ebuf, gettext("Unknown state type \"%s\"\n"), state); 566 handle_errors(ep, NULL, B_FALSE, B_FALSE); 567 return (0); 568 } 569 570 /* 571 * Return the numerical algorithm identifier corresponding to the specified 572 * algorithm name. 573 */ 574 static uint8_t 575 parsealg(char *alg, int proto_num, char *ebuf) 576 { 577 u_longlong_t invalue; 578 struct ipsecalgent *algent; 579 char *ep = NULL; 580 581 if (alg == NULL) { 582 FATAL(ep, ebuf, gettext("Unexpected end of command line, " 583 "was expecting an algorithm name.\n")); 584 } 585 586 algent = getipsecalgbyname(alg, proto_num, NULL); 587 if (algent != NULL) { 588 uint8_t alg_num; 589 590 alg_num = algent->a_alg_num; 591 freeipsecalgent(algent); 592 593 return (alg_num); 594 } 595 596 /* 597 * Since algorithms can be loaded during kernel run-time, check for 598 * numeric algorithm values too. PF_KEY can catch bad ones with EINVAL. 599 */ 600 invalue = parsenum(alg, B_FALSE, ebuf); 601 if (invalue != (u_longlong_t)-1 && 602 (u_longlong_t)(invalue & (u_longlong_t)0xff) == invalue) 603 return ((uint8_t)invalue); 604 605 if (proto_num == IPSEC_PROTO_ESP) { 606 ERROR1(ep, ebuf, gettext( 607 "Unknown encryption algorithm type \"%s\"\n"), alg); 608 } else { 609 ERROR1(ep, ebuf, gettext( 610 "Unknown authentication algorithm type \"%s\"\n"), alg); 611 } 612 handle_errors(ep, NULL, B_FALSE, B_FALSE); 613 return (0); 614 } 615 616 /* 617 * Parse and reverse parse out a source/destination ID type. 618 */ 619 static struct idtypes { 620 char *idtype; 621 uint8_t retval; 622 } idtypes[] = { 623 {"prefix", SADB_IDENTTYPE_PREFIX}, 624 {"fqdn", SADB_IDENTTYPE_FQDN}, 625 {"domain", SADB_IDENTTYPE_FQDN}, 626 {"domainname", SADB_IDENTTYPE_FQDN}, 627 {"user_fqdn", SADB_IDENTTYPE_USER_FQDN}, 628 {"mailbox", SADB_IDENTTYPE_USER_FQDN}, 629 {"der_dn", SADB_X_IDENTTYPE_DN}, 630 {"der_gn", SADB_X_IDENTTYPE_GN}, 631 {NULL, 0} 632 }; 633 634 static uint16_t 635 parseidtype(char *type, char *ebuf) 636 { 637 struct idtypes *idp; 638 u_longlong_t invalue; 639 char *ep = NULL; 640 641 if (type == NULL) { 642 /* Shouldn't reach here, see callers for why. */ 643 FATAL(ep, ebuf, gettext("Unexpected end of command line, " 644 "was expecting a type.\n")); 645 } 646 647 for (idp = idtypes; idp->idtype != NULL; idp++) { 648 if (strcasecmp(idp->idtype, type) == 0) 649 return (idp->retval); 650 } 651 /* 652 * Since identity types are almost arbitrary, check for numeric 653 * algorithm values too. PF_KEY can catch bad ones with EINVAL. 654 */ 655 invalue = parsenum(type, B_FALSE, ebuf); 656 if (invalue != (u_longlong_t)-1 && 657 (u_longlong_t)(invalue & (u_longlong_t)0xffff) == invalue) 658 return ((uint16_t)invalue); 659 660 661 ERROR1(ep, ebuf, gettext("Unknown identity type \"%s\"\n"), type); 662 663 handle_errors(ep, NULL, B_FALSE, B_FALSE); 664 return (0); 665 } 666 667 /* 668 * Parse an address off the command line. Return length of sockaddr, 669 * and either return a hostent pointer (caller frees). The new 670 * getipnodebyname() call does the Right Thing (TM), even with 671 * raw addresses (colon-separated IPv6 or dotted decimal IPv4). 672 */ 673 674 static struct { 675 struct hostent he; 676 char *addtl[2]; 677 } dummy; 678 static union { 679 struct in6_addr ipv6; 680 struct in_addr ipv4; 681 uint64_t aligner; 682 } addr1; 683 684 static int 685 parseaddr(char *addr, struct hostent **hpp, boolean_t v6only, char *ebuf) 686 { 687 int hp_errno; 688 struct hostent *hp = NULL; 689 char *ep = NULL; 690 691 if (addr == NULL) { 692 FATAL(ep, ebuf, gettext("Unexpected end of command line, " 693 "was expecting an address.\n")); 694 } 695 696 if (!nflag) { 697 /* 698 * Try name->address first. Assume AF_INET6, and 699 * get IPv4's, plus IPv6's if and only if IPv6 is configured. 700 * This means to add IPv6 SAs, you must have IPv6 701 * up-and-running. (AI_DEFAULT works here.) 702 */ 703 hp = getipnodebyname(addr, AF_INET6, 704 (v6only ? AI_ADDRCONFIG : (AI_DEFAULT | AI_ALL)), 705 &hp_errno); 706 } else { 707 /* 708 * Try a normal address conversion only. Use "dummy" 709 * to construct a fake hostent. Caller will know not 710 * to free this one. 711 */ 712 if (inet_pton(AF_INET6, addr, &addr1) == 1) { 713 dummy.he.h_addr_list = dummy.addtl; 714 dummy.addtl[0] = (char *)&addr1; 715 dummy.addtl[1] = NULL; 716 hp = &dummy.he; 717 dummy.he.h_addrtype = AF_INET6; 718 dummy.he.h_length = sizeof (struct in6_addr); 719 } else if (inet_pton(AF_INET, addr, &addr1) == 1) { 720 /* 721 * Remap to AF_INET6 anyway. 722 */ 723 dummy.he.h_addr_list = dummy.addtl; 724 dummy.addtl[0] = (char *)&addr1; 725 dummy.addtl[1] = NULL; 726 hp = &dummy.he; 727 dummy.he.h_addrtype = AF_INET6; 728 dummy.he.h_length = sizeof (struct in6_addr); 729 /* 730 * NOTE: If macro changes to disallow in-place 731 * conversion, rewhack this. 732 */ 733 IN6_INADDR_TO_V4MAPPED(&addr1.ipv4, &addr1.ipv6); 734 } else { 735 hp = NULL; 736 } 737 } 738 739 if (hp == NULL) 740 WARN1(ep, ebuf, gettext("Unknown address %s."), addr); 741 742 *hpp = hp; 743 /* Always return sockaddr_in6 for now. */ 744 handle_errors(ep, NULL, B_FALSE, B_FALSE); 745 return (sizeof (struct sockaddr_in6)); 746 } 747 748 /* 749 * Parse a hex character for a key. A string will take the form: 750 * xxxxxxxxx/nn 751 * where 752 * xxxxxxxxx == a string of hex characters ([0-9][a-f][A-F]) 753 * nn == an optional decimal "mask". If it is not present, it 754 * is assumed that the hex string will be rounded to the nearest 755 * byte, where odd nibbles, like 123 will become 0x0123. 756 * 757 * NOTE:Unlike the expression of IP addresses, I will not allow an 758 * excessive "mask". For example 2112/50 is very illegal. 759 * NOTE2: This key should be in canonical order. Consult your man 760 * pages per algorithm about said order. 761 */ 762 763 #define hd2num(hd) (((hd) >= '0' && (hd) <= '9') ? ((hd) - '0') : \ 764 (((hd) >= 'a' && (hd) <= 'f') ? ((hd) - 'a' + 10) : ((hd) - 'A' + 10))) 765 766 static struct sadb_key * 767 parsekey(char *input, char *ebuf) 768 { 769 struct sadb_key *retval; 770 uint_t i, hexlen = 0, bits, alloclen; 771 uint8_t *key; 772 char *ep = NULL; 773 774 if (input == NULL) { 775 FATAL(ep, ebuf, gettext("Unexpected end of command line, " 776 "was expecting a key.\n")); 777 } 778 /* Allow hex values prepended with 0x convention */ 779 if ((strnlen(input, sizeof (hexlen)) > 2) && 780 (strncasecmp(input, "0x", 2) == 0)) 781 input += 2; 782 783 for (i = 0; input[i] != '\0' && input[i] != '/'; i++) 784 hexlen++; 785 786 if (input[i] == '\0') { 787 bits = 0; 788 } else { 789 /* Have /nn. */ 790 input[i] = '\0'; 791 if (sscanf((input + i + 1), "%u", &bits) != 1) { 792 FATAL1(ep, ebuf, gettext( 793 "\"%s\" is not a bit specifier.\n"), 794 (input + i + 1)); 795 } 796 /* hexlen in nibbles */ 797 if (((bits + 3) >> 2) > hexlen) { 798 ERROR2(ep, ebuf, gettext( 799 "bit length %d is too big for %s.\n"), bits, input); 800 } 801 /* 802 * Adjust hexlen down if user gave us too small of a bit 803 * count. 804 */ 805 if ((hexlen << 2) > bits + 3) { 806 WARN2(ep, ebuf, gettext( 807 "WARNING: Lower bits will be truncated " 808 "for:\n\t%s/%d.\n"), input, bits); 809 hexlen = (bits + 3) >> 2; 810 input[hexlen] = '\0'; 811 } 812 } 813 814 /* 815 * Allocate. Remember, hexlen is in nibbles. 816 */ 817 818 alloclen = sizeof (*retval) + roundup((hexlen/2 + (hexlen & 0x1)), 8); 819 retval = malloc(alloclen); 820 821 if (retval == NULL) 822 Bail("malloc(parsekey)"); 823 retval->sadb_key_len = SADB_8TO64(alloclen); 824 retval->sadb_key_reserved = 0; 825 if (bits == 0) 826 retval->sadb_key_bits = (hexlen + (hexlen & 0x1)) << 2; 827 else 828 retval->sadb_key_bits = bits; 829 830 /* 831 * Read in nibbles. Read in odd-numbered as shifted high. 832 * (e.g. 123 becomes 0x1230). 833 */ 834 835 key = (uint8_t *)(retval + 1); 836 for (i = 0; input[i] != '\0'; i += 2) { 837 boolean_t second = (input[i + 1] != '\0'); 838 839 if (!isxdigit(input[i]) || 840 (!isxdigit(input[i + 1]) && second)) { 841 ERROR1(ep, ebuf, gettext( 842 "string '%s' not a hex value.\n"), input); 843 free(retval); 844 retval = NULL; 845 break; 846 } 847 *key = (hd2num(input[i]) << 4); 848 if (second) 849 *key |= hd2num(input[i + 1]); 850 else 851 break; /* out of for loop. */ 852 key++; 853 } 854 855 /* bzero the remaining bits if we're a non-octet amount. */ 856 if (bits & 0x7) 857 *((input[i] == '\0') ? key - 1 : key) &= 858 0xff << (8 - (bits & 0x7)); 859 860 handle_errors(ep, NULL, B_FALSE, B_FALSE); 861 return (retval); 862 } 863 864 /* 865 * Write a message to the PF_KEY socket. If verbose, print the message 866 * heading into the kernel. 867 */ 868 static int 869 key_write(int fd, void *msg, size_t len) 870 { 871 if (vflag) { 872 (void) printf( 873 gettext("VERBOSE ON: Message to kernel looks like:\n")); 874 (void) printf("==========================================\n"); 875 print_samsg(stdout, msg, B_FALSE, vflag, nflag); 876 (void) printf("==========================================\n"); 877 } 878 879 return (write(fd, msg, len)); 880 } 881 882 /* 883 * SIGALRM handler for time_critical_enter. 884 */ 885 static void 886 time_critical_catch(int signal) 887 { 888 if (signal == SIGALRM) { 889 errx(1, gettext("Reply message from PF_KEY timed out.")); 890 } else { 891 errx(1, gettext("Caught signal %d while trying to receive" 892 "PF_KEY reply message"), signal); 893 } 894 /* errx() calls exit. */ 895 } 896 897 #define TIME_CRITICAL_TIME 10 /* In seconds */ 898 899 /* 900 * Enter a "time critical" section where key is waiting for a return message. 901 */ 902 static void 903 time_critical_enter(void) 904 { 905 (void) signal(SIGALRM, time_critical_catch); 906 (void) alarm(TIME_CRITICAL_TIME); 907 } 908 909 /* 910 * Exit the "time critical" section after getting an appropriate return 911 * message. 912 */ 913 static void 914 time_critical_exit(void) 915 { 916 (void) alarm(0); 917 (void) signal(SIGALRM, SIG_DFL); 918 } 919 920 /* 921 * Construct a PF_KEY FLUSH message for the SA type specified. 922 */ 923 static void 924 doflush(int satype) 925 { 926 struct sadb_msg msg; 927 int rc; 928 929 msg_init(&msg, SADB_FLUSH, (uint8_t)satype); 930 rc = key_write(keysock, &msg, sizeof (msg)); 931 if (rc == -1) 932 Bail("write() to PF_KEY socket failed (in doflush)"); 933 934 time_critical_enter(); 935 do { 936 rc = read(keysock, &msg, sizeof (msg)); 937 if (rc == -1) 938 Bail("read (in doflush)"); 939 } while (msg.sadb_msg_seq != seq || msg.sadb_msg_pid != mypid); 940 time_critical_exit(); 941 942 /* 943 * I should _never_ hit the following unless: 944 * 945 * 1. There is a kernel bug. 946 * 2. There is another process filling in its pid with mine, and 947 * issuing a different message that would cause a different result. 948 */ 949 if (msg.sadb_msg_type != SADB_FLUSH || 950 msg.sadb_msg_satype != (uint8_t)satype) { 951 syslog((LOG_NOTICE|LOG_AUTH), 952 gettext("doflush: Return message not of type SADB_FLUSH!")); 953 Bail("doflush: Return message not of type SADB_FLUSH!"); 954 } 955 956 if (msg.sadb_msg_errno != 0) { 957 errno = msg.sadb_msg_errno; 958 if (errno == EINVAL) { 959 print_diagnostic(stderr, msg.sadb_x_msg_diagnostic); 960 warnx(gettext("Cannot flush SA type %d."), satype); 961 } 962 Bail("return message (in doflush)"); 963 } 964 } 965 966 /* 967 * save_XXX functions are used when "saving" the SA tables to either a 968 * file or standard output. They use the dump_XXX functions where needed, 969 * but mostly they use the rparseXXX functions. 970 */ 971 972 /* 973 * Because "save" and "dump" both use the SADB_DUMP message, fold both 974 * into the same function. 975 */ 976 static void 977 dodump(int satype, FILE *ofile) 978 { 979 struct sadb_msg *msg = (struct sadb_msg *)get_buffer; 980 int rc; 981 982 if (ofile != NULL) { 983 (void) fprintf(ofile, 984 gettext("# This key file was generated by the")); 985 (void) fprintf(ofile, 986 gettext(" ipseckey(1m) command's 'save' feature.\n\n")); 987 } 988 msg_init(msg, SADB_DUMP, (uint8_t)satype); 989 rc = key_write(keysock, msg, sizeof (*msg)); 990 if (rc == -1) 991 Bail("write to PF_KEY socket failed (in dodump)"); 992 993 do { 994 /* 995 * For DUMP, do only the read as a time critical section. 996 */ 997 time_critical_enter(); 998 rc = read(keysock, get_buffer, sizeof (get_buffer)); 999 time_critical_exit(); 1000 if (rc == -1) 1001 Bail("read (in dodump)"); 1002 if (msg->sadb_msg_pid == mypid && 1003 msg->sadb_msg_type == SADB_DUMP && 1004 msg->sadb_msg_seq != 0 && 1005 msg->sadb_msg_errno == 0) { 1006 if (ofile == NULL) { 1007 print_samsg(stdout, get_buffer, B_FALSE, vflag, 1008 nflag); 1009 (void) putchar('\n'); 1010 } else { 1011 save_assoc(get_buffer, ofile); 1012 } 1013 } 1014 } while (msg->sadb_msg_pid != mypid || 1015 (msg->sadb_msg_errno == 0 && msg->sadb_msg_seq != 0)); 1016 1017 if (ofile != NULL && ofile != stdout) 1018 (void) fclose(ofile); 1019 1020 if (msg->sadb_msg_errno == 0) { 1021 if (ofile == NULL) 1022 (void) printf( 1023 gettext("Dump succeeded for SA type %d.\n"), 1024 satype); 1025 } else { 1026 print_diagnostic(stderr, msg->sadb_x_msg_diagnostic); 1027 errno = msg->sadb_msg_errno; 1028 Bail("Dump failed"); 1029 } 1030 } 1031 1032 #define SCOPE_UNSPEC 0 1033 #define SCOPE_LINKLOCAL 1 1034 #define SCOPE_SITELOCAL 2 1035 #define SCOPE_GLOBAL 3 1036 #define SCOPE_V4COMPAT 4 1037 #define SCOPE_LOOPBACK 5 /* Pedantic, yes, but necessary. */ 1038 1039 static int 1040 ipv6_addr_scope(struct in6_addr *addr) 1041 { 1042 /* Don't return anything regarding multicast for now... */ 1043 1044 if (IN6_IS_ADDR_UNSPECIFIED(addr)) 1045 return (SCOPE_UNSPEC); 1046 1047 if (IN6_IS_ADDR_LINKLOCAL(addr)) 1048 return (SCOPE_LINKLOCAL); 1049 1050 if (IN6_IS_ADDR_SITELOCAL(addr)) 1051 return (SCOPE_SITELOCAL); 1052 1053 if (IN6_IS_ADDR_V4COMPAT(addr)) 1054 return (SCOPE_V4COMPAT); 1055 1056 if (IN6_IS_ADDR_LOOPBACK(addr)) 1057 return (SCOPE_LOOPBACK); 1058 1059 /* For now, return global by default. */ 1060 return (SCOPE_GLOBAL); 1061 } 1062 1063 /* 1064 * doaddresses(): 1065 * 1066 * Used by doaddup() and dodelget() to create new SA's based on the 1067 * provided source and destination addresses hostent. 1068 * 1069 * sadb_msg_type: expected PF_KEY reply message type 1070 * sadb_msg_satype: expected PF_KEY reply satype 1071 * cmd: user command 1072 * srchp: hostent for the source address(es) 1073 * dsthp: hostent for the destination address(es) 1074 * src: points to the SADB source address extension 1075 * dst: points to the SADB destination address extension 1076 * unspec_src: indicates an unspecified source address. 1077 * buffer: pointer to the SADB buffer to use with PF_KEY 1078 * buffer_size: size of buffer 1079 * spi: spi for this message (set by caller) 1080 * srcport: source port if specified 1081 * dstport: destination port if specified 1082 * proto: IP protocol number if specified 1083 * iproto: Inner (tunnel mode) IP protocol number if specified 1084 * NATT note: we are going to assume a semi-sane world where NAT 1085 * boxen don't explode to multiple addresses. 1086 */ 1087 static void 1088 doaddresses(uint8_t sadb_msg_type, uint8_t sadb_msg_satype, int cmd, 1089 struct hostent *srchp, struct hostent *dsthp, 1090 struct sadb_address *src, struct sadb_address *dst, 1091 boolean_t unspec_src, uint64_t *buffer, int buffer_size, uint32_t spi, 1092 char *ebuf) 1093 { 1094 boolean_t single_dst; 1095 struct sockaddr_in6 *sin6; 1096 struct sadb_msg *msgp; 1097 int i, rc; 1098 char **walker; /* For the SRC and PROXY walking functions. */ 1099 char *first_match; 1100 uint64_t savebuf[MAX_GET_SIZE]; 1101 uint16_t srcport = 0, dstport = 0; 1102 char *ep = NULL; 1103 1104 /* 1105 * Okay, now we have "src", "dst", and maybe "proxy" reassigned 1106 * to point into the buffer to be written to PF_KEY, we can do 1107 * potentially several writes based on destination address. 1108 * 1109 * First, obtain port numbers from passed-in extensions. 1110 */ 1111 1112 if (src != NULL) { 1113 sin6 = (struct sockaddr_in6 *)(src + 1); 1114 srcport = ntohs(sin6->sin6_port); 1115 } 1116 if (dst != NULL) { 1117 sin6 = (struct sockaddr_in6 *)(dst + 1); 1118 dstport = ntohs(sin6->sin6_port); 1119 } 1120 1121 /* 1122 * The rules for ADD, GET, and UPDATE: (NOTE: This assumes IPsec. 1123 * If other consumers of PF_KEY happen, this will have to be 1124 * rewhacked.): 1125 * 1126 * Do a message for every possible DST address. 1127 * 1128 * If a source or proxy address explodes, keep unspecified 1129 * (and mention unspecified). 1130 * 1131 * If dsthp is == dummy.he, then go through the loop once. 1132 * If any other hp is == dummy.he, then you don't have to apply any 1133 * silly rules. 1134 * 1135 * DELETE is different, because you can leave either "src" or "dst" 1136 * blank! You need to explode if one of them is full, and not assume 1137 * that the other is set. 1138 */ 1139 1140 if (dsthp == NULL) { 1141 /* 1142 * No destination address specified. 1143 * With extended diagnostics, we don't have to bail the 1144 * non-DELETE cases here. The EINVAL diagnostics will be 1145 * enough to inform the user(s) what happened. 1146 */ 1147 i = 0; 1148 do { 1149 if (srchp == &dummy.he) { 1150 /* Just to be sure... */ 1151 srchp->h_addr_list[1] = NULL; 1152 } else if (srchp != NULL) { 1153 /* Degenerate case, h_addr_list[0] == NULL. */ 1154 if (srchp->h_addr_list[i] == NULL) 1155 Bail("Empty source address list"); 1156 1157 /* 1158 * Fill in the src sockaddr. 1159 */ 1160 sin6 = (struct sockaddr_in6 *)(src + 1); 1161 bzero(sin6, sizeof (*sin6)); 1162 bcopy(srchp->h_addr_list[i], &sin6->sin6_addr, 1163 sizeof (struct in6_addr)); 1164 sin6->sin6_family = AF_INET6; 1165 sin6->sin6_port = htons(srcport); 1166 } 1167 1168 /* Save off a copy for later writing... */ 1169 msgp = (struct sadb_msg *)buffer; 1170 bcopy(buffer, savebuf, SADB_64TO8(msgp->sadb_msg_len)); 1171 1172 rc = key_write(keysock, buffer, 1173 SADB_64TO8(msgp->sadb_msg_len)); 1174 if (rc == -1) 1175 Bail("write() to PF_KEY socket " 1176 "(in doaddresses)"); 1177 1178 time_critical_enter(); 1179 do { 1180 rc = read(keysock, buffer, buffer_size); 1181 if (rc == -1) 1182 Bail("read (in doaddresses)"); 1183 } while (msgp->sadb_msg_seq != seq || 1184 msgp->sadb_msg_pid != mypid); 1185 time_critical_exit(); 1186 1187 if (msgp->sadb_msg_type != sadb_msg_type || 1188 msgp->sadb_msg_satype != sadb_msg_satype) { 1189 syslog((LOG_NOTICE|LOG_AUTH), gettext( 1190 "doaddresses: Unexpected returned message " 1191 "(%d exp %d)\n"), msgp->sadb_msg_type, 1192 sadb_msg_type); 1193 Bail("doaddresses: Unexpected returned " 1194 "message"); 1195 } 1196 1197 errno = msgp->sadb_msg_errno; 1198 if (errno != 0) { 1199 if (errno == EINVAL) { 1200 WARN(ep, ebuf, gettext( 1201 "One of the entered " 1202 "values is incorrect.")); 1203 print_diagnostic(stderr, 1204 msgp->sadb_x_msg_diagnostic); 1205 } else { 1206 Bail("return message (in doaddresses)"); 1207 } 1208 } 1209 1210 /* ...and then restore the saved buffer. */ 1211 msgp = (struct sadb_msg *)savebuf; 1212 bcopy(savebuf, buffer, SADB_64TO8(msgp->sadb_msg_len)); 1213 } while (srchp != NULL && srchp->h_addr_list[++i] != NULL); 1214 return; 1215 } 1216 1217 single_dst = (dsthp == &dummy.he || dsthp->h_addr_list[1] == NULL); 1218 1219 for (i = 0; dsthp->h_addr_list[i] != NULL; i++) { 1220 if (dsthp == &dummy.he) { 1221 /* Just to be sure... */ 1222 dsthp->h_addr_list[1] = NULL; 1223 } else { 1224 /* 1225 * Fill in the dst sockaddr. 1226 */ 1227 sin6 = (struct sockaddr_in6 *)(dst + 1); 1228 bzero(sin6, sizeof (*sin6)); 1229 bcopy(dsthp->h_addr_list[i], &sin6->sin6_addr, 1230 sizeof (struct in6_addr)); 1231 sin6->sin6_family = AF_INET6; 1232 sin6->sin6_port = htons(dstport); 1233 } 1234 1235 /* 1236 * Try and assign src, if there's any ambiguity. 1237 */ 1238 if (!unspec_src && srchp != &dummy.he) { 1239 if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) { 1240 /* 1241 * IPv4 address. Find an IPv4 address, then 1242 * keep looking for a second one. If a second 1243 * exists, print a message, and fill in the 1244 * unspecified address. 1245 */ 1246 first_match = NULL; 1247 1248 for (walker = srchp->h_addr_list; 1249 *walker != NULL; walker++) { 1250 /* LINTED E_BAD_PTR_CAST_ALIGN */ 1251 if (IN6_IS_ADDR_V4MAPPED( 1252 (struct in6_addr *)*walker)) { 1253 if (first_match != NULL) 1254 break; 1255 else 1256 first_match = *walker; 1257 } 1258 } 1259 sin6 = (struct sockaddr_in6 *)(src + 1); 1260 bzero(sin6, sizeof (*sin6)); 1261 1262 if (first_match == NULL) { 1263 /* 1264 * No IPv4 hits. Is this a single 1265 * dest? 1266 */ 1267 WARN1(ep, ebuf, gettext( 1268 "No IPv4 source address " 1269 "for name %s.\n"), srchp->h_name); 1270 if (single_dst) { 1271 ERROR(ep, ebuf, gettext( 1272 "Only single destination " 1273 "IP address.\n")); 1274 } else { 1275 /* Continue, but do I print? */ 1276 continue; /* for loop */ 1277 } 1278 1279 /* I should never reach here. */ 1280 } 1281 1282 sin6->sin6_family = AF_INET6; 1283 sin6->sin6_port = htons(srcport); 1284 if (*walker != NULL) { 1285 /* 1286 * Early loop exit. It must've been 1287 * multiple hits... 1288 * 1289 * Issue a null-source warning? 1290 */ 1291 WARN1(ep, ebuf, gettext( 1292 "Multiple IPv4 source addresses " 1293 "for %s, using unspecified source " 1294 "instead."), srchp->h_name); 1295 } else { 1296 /* 1297 * If I reach here w/o hitting the 1298 * previous if statements, I have a 1299 * single source address for this 1300 * destination. 1301 */ 1302 bcopy(first_match, &sin6->sin6_addr, 1303 sizeof (struct in6_addr)); 1304 } 1305 } else { 1306 /* 1307 * IPv6 address. Find an IPv6 address. 1308 * Unlike IPv4 addresses, things can get a 1309 * little more sticky with scopes, etc. 1310 */ 1311 int dst_scope, src_scope; 1312 1313 dst_scope = ipv6_addr_scope(&sin6->sin6_addr); 1314 1315 first_match = NULL; 1316 for (walker = srchp->h_addr_list; 1317 *walker != NULL; walker++) { 1318 /* LINTED E_BAD_PTR_CAST_ALIGN */ 1319 if (!IN6_IS_ADDR_V4MAPPED( 1320 (struct in6_addr *)*walker)) { 1321 /* 1322 * Set first-match, etc. 1323 * Take into account scopes, 1324 * and other IPv6 thingies. 1325 */ 1326 src_scope = ipv6_addr_scope( 1327 /* LINTED E_BAD_PTR_CAST */ 1328 (struct in6_addr *)*walker); 1329 if (src_scope == SCOPE_UNSPEC || 1330 src_scope == dst_scope) { 1331 if (first_match != 1332 NULL) 1333 break; 1334 else 1335 first_match = 1336 *walker; 1337 } 1338 } 1339 } 1340 1341 sin6 = (struct sockaddr_in6 *)(src + 1); 1342 bzero(sin6, sizeof (*sin6)); 1343 sin6->sin6_port = htons(srcport); 1344 if (first_match == NULL) { 1345 /* 1346 * No IPv6 hits. Is this a single 1347 * dest? 1348 */ 1349 WARN1(ep, ebuf, gettext( 1350 "No IPv6 source address of " 1351 "matching scope for name %s.\n"), 1352 srchp->h_name); 1353 if (single_dst) { 1354 ERROR(ep, ebuf, gettext( 1355 "Only a single IPV6 " 1356 "destination " 1357 "address.\n")); 1358 } else { 1359 /* Continue, but do I print? */ 1360 continue; /* for loop */ 1361 } 1362 1363 /* I should never reach here. */ 1364 } 1365 sin6->sin6_family = AF_INET6; 1366 if (*walker != NULL) { 1367 /* 1368 * Early loop exit. Issue a 1369 * null-source warning? 1370 */ 1371 WARN1(ep, ebuf, gettext( 1372 "Multiple IPv6 source addresses " 1373 "for %s of the same scope, using " 1374 "unspecified source instead.\n"), 1375 srchp->h_name); 1376 } else { 1377 /* 1378 * If I reach here w/o hitting the 1379 * previous if statements, I have a 1380 * single source address for this 1381 * destination. 1382 */ 1383 bcopy(first_match, &sin6->sin6_addr, 1384 sizeof (struct in6_addr)); 1385 } 1386 } 1387 } 1388 1389 /* 1390 * If there are errors at this point there is no 1391 * point sending anything to PF_KEY. 1392 */ 1393 handle_errors(ep, ebuf, B_TRUE, B_FALSE); 1394 1395 /* Save off a copy for later writing... */ 1396 msgp = (struct sadb_msg *)buffer; 1397 bcopy(buffer, savebuf, SADB_64TO8(msgp->sadb_msg_len)); 1398 1399 rc = key_write(keysock, buffer, SADB_64TO8(msgp->sadb_msg_len)); 1400 if (rc == -1) 1401 Bail("write() to PF_KEY socket (in doaddresses)"); 1402 1403 /* Blank the key for paranoia's sake. */ 1404 bzero(buffer, buffer_size); 1405 time_critical_enter(); 1406 do { 1407 rc = read(keysock, buffer, buffer_size); 1408 if (rc == -1) 1409 Bail("read (in doaddresses)"); 1410 } while (msgp->sadb_msg_seq != seq || 1411 msgp->sadb_msg_pid != mypid); 1412 time_critical_exit(); 1413 1414 /* 1415 * I should _never_ hit the following unless: 1416 * 1417 * 1. There is a kernel bug. 1418 * 2. Another process is mistakenly using my pid in a PF_KEY 1419 * message. 1420 */ 1421 if (msgp->sadb_msg_type != sadb_msg_type || 1422 msgp->sadb_msg_satype != sadb_msg_satype) { 1423 syslog((LOG_NOTICE|LOG_AUTH), gettext( 1424 "doaddresses: Unexpected returned message " 1425 "(%d exp %d)\n"), msgp->sadb_msg_type, 1426 sadb_msg_type); 1427 Bail("doaddresses: Unexpected returned message"); 1428 } 1429 1430 if (msgp->sadb_msg_errno != 0) { 1431 char addrprint[INET6_ADDRSTRLEN]; 1432 int on_errno = 0; 1433 char *on_errno_msg; 1434 1435 /* 1436 * Print different error messages depending 1437 * on the SADB message type being processed. 1438 * If we get a ESRCH error for a GET/DELETE 1439 * messages, we report that the SA does not 1440 * exist. If we get a EEXIST error for a 1441 * ADD/UPDATE message, we report that the 1442 * SA already exists. 1443 */ 1444 if (sadb_msg_type == SADB_GET || 1445 sadb_msg_type == SADB_DELETE) { 1446 on_errno = ESRCH; 1447 on_errno_msg = "does not exist"; 1448 } else if (sadb_msg_type == SADB_ADD || 1449 sadb_msg_type == SADB_UPDATE) { 1450 on_errno = EEXIST; 1451 on_errno_msg = "already exists"; 1452 } 1453 1454 errno = msgp->sadb_msg_errno; 1455 if (errno == on_errno) { 1456 ERROR2(ep, ebuf, gettext( 1457 "Association (type = %s) " 1458 "with spi 0x%x and addr\n"), 1459 rparsesatype(msgp->sadb_msg_satype), 1460 ntohl(spi)); 1461 ERROR2(ep, ebuf, "%s %s.\n", 1462 do_inet_ntop(dsthp->h_addr_list[i], 1463 addrprint, sizeof (addrprint)), 1464 on_errno_msg); 1465 msgp = (struct sadb_msg *)savebuf; 1466 bcopy(savebuf, buffer, 1467 SADB_64TO8(msgp->sadb_msg_len)); 1468 continue; 1469 } else { 1470 if (errno == EINVAL) { 1471 ERROR2(ep, ebuf, gettext( 1472 "PF_KEY Diagnostic code %u: %s.\n"), 1473 msgp->sadb_x_msg_diagnostic, 1474 keysock_diag( 1475 msgp->sadb_x_msg_diagnostic)); 1476 } else { 1477 Bail("return message (in doaddresses)"); 1478 } 1479 } 1480 } 1481 1482 if (cmd == CMD_GET) { 1483 if (msgp->sadb_msg_len > MAX_GET_SIZE) { 1484 WARN1(ep, ebuf, gettext("WARNING: " 1485 "SA information bigger than %d bytes.\n"), 1486 SADB_64TO8(MAX_GET_SIZE)); 1487 } 1488 print_samsg(stdout, buffer, B_FALSE, vflag, nflag); 1489 } 1490 1491 handle_errors(ep, ebuf, B_TRUE, B_FALSE); 1492 1493 /* ...and then restore the saved buffer. */ 1494 msgp = (struct sadb_msg *)savebuf; 1495 bcopy(savebuf, buffer, SADB_64TO8(msgp->sadb_msg_len)); 1496 lines_added++; 1497 } 1498 1499 /* Degenerate case, h_addr_list[0] == NULL. */ 1500 if (i == 0) 1501 Bail("Empty destination address list"); 1502 1503 /* 1504 * free(ebuf) even if there are no errors. 1505 * handle_errors() won't return here. 1506 */ 1507 handle_errors(ep, ebuf, B_TRUE, B_TRUE); 1508 } 1509 1510 /* 1511 * Perform an add or an update. ADD and UPDATE are similar in the extensions 1512 * they need. 1513 */ 1514 static void 1515 doaddup(int cmd, int satype, char *argv[], char *ebuf) 1516 { 1517 uint64_t *buffer, *nexthdr; 1518 struct sadb_msg msg; 1519 struct sadb_sa *assoc = NULL; 1520 struct sadb_address *src = NULL, *dst = NULL; 1521 struct sadb_address *isrc = NULL, *idst = NULL; 1522 struct sadb_address *natt_local = NULL, *natt_remote = NULL; 1523 struct sadb_key *encrypt = NULL, *auth = NULL; 1524 struct sadb_ident *srcid = NULL, *dstid = NULL; 1525 struct sadb_lifetime *hard = NULL, *soft = NULL; /* Current? */ 1526 struct sockaddr_in6 *sin6; 1527 /* MLS TODO: Need sensitivity eventually. */ 1528 int next, token, sa_len, alloclen, totallen = sizeof (msg), prefix; 1529 uint32_t spi; 1530 char *thiscmd, *pstr; 1531 boolean_t readstate = B_FALSE, unspec_src = B_FALSE; 1532 boolean_t alloc_inner = B_FALSE, use_natt = B_FALSE; 1533 struct hostent *srchp = NULL, *dsthp = NULL, *isrchp = NULL, 1534 *idsthp = NULL; 1535 struct hostent *natt_lhp = NULL, *natt_rhp = NULL; 1536 uint16_t srcport = 0, dstport = 0, natt_lport = 0, natt_rport = 0, 1537 isrcport = 0, idstport = 0; 1538 uint8_t proto = 0, iproto = 0; 1539 char *ep = NULL; 1540 1541 thiscmd = (cmd == CMD_ADD) ? "add" : "update"; 1542 1543 msg_init(&msg, ((cmd == CMD_ADD) ? SADB_ADD : SADB_UPDATE), 1544 (uint8_t)satype); 1545 1546 /* Assume last element in argv is set to NULL. */ 1547 do { 1548 token = parseextval(*argv, &next); 1549 argv++; 1550 switch (token) { 1551 case TOK_EOF: 1552 /* Do nothing, I'm done. */ 1553 break; 1554 case TOK_UNKNOWN: 1555 ERROR1(ep, ebuf, gettext( 1556 "Unknown extension field \"%s\" \n"), *(argv - 1)); 1557 break; 1558 case TOK_SPI: 1559 case TOK_REPLAY: 1560 case TOK_STATE: 1561 case TOK_AUTHALG: 1562 case TOK_ENCRALG: 1563 case TOK_ENCAP: 1564 /* 1565 * May want to place this chunk of code in a function. 1566 * 1567 * This code checks for duplicate entries on a command 1568 * line. 1569 */ 1570 1571 /* Allocate the SADB_EXT_SA extension. */ 1572 if (assoc == NULL) { 1573 assoc = malloc(sizeof (*assoc)); 1574 if (assoc == NULL) 1575 Bail("malloc(assoc)"); 1576 bzero(assoc, sizeof (*assoc)); 1577 assoc->sadb_sa_exttype = SADB_EXT_SA; 1578 assoc->sadb_sa_len = 1579 SADB_8TO64(sizeof (*assoc)); 1580 totallen += sizeof (*assoc); 1581 } 1582 switch (token) { 1583 case TOK_SPI: 1584 /* 1585 * If some cretin types in "spi 0" then he/she 1586 * can type in another SPI. 1587 */ 1588 if (assoc->sadb_sa_spi != 0) { 1589 ERROR(ep, ebuf, gettext( 1590 "Can only specify " 1591 "single SPI value.\n")); 1592 break; 1593 } 1594 /* Must convert SPI to network order! */ 1595 assoc->sadb_sa_spi = 1596 htonl((uint32_t)parsenum(*argv, B_TRUE, 1597 ebuf)); 1598 if (assoc->sadb_sa_spi == 0) { 1599 ERROR(ep, ebuf, gettext( 1600 "Invalid SPI value \"0\" .\n")); 1601 } 1602 break; 1603 case TOK_REPLAY: 1604 /* 1605 * That same cretin can do the same with 1606 * replay. 1607 */ 1608 if (assoc->sadb_sa_replay != 0) { 1609 ERROR(ep, ebuf, gettext( 1610 "Can only specify " 1611 "single replay window size.\n")); 1612 break; 1613 } 1614 assoc->sadb_sa_replay = 1615 (uint8_t)parsenum(*argv, B_TRUE, ebuf); 1616 if (assoc->sadb_sa_replay != 0) { 1617 WARN(ep, ebuf, gettext( 1618 "WARNING: Replay with manual" 1619 " keying considered harmful.\n")); 1620 } 1621 break; 1622 case TOK_STATE: 1623 /* 1624 * 0 is an actual state value, LARVAL. This 1625 * means that one can type in the larval state 1626 * and then type in another state on the same 1627 * command line. 1628 */ 1629 if (assoc->sadb_sa_state != 0) { 1630 ERROR(ep, ebuf, gettext( 1631 "Can only specify " 1632 "single SA state.\n")); 1633 break; 1634 } 1635 assoc->sadb_sa_state = parsestate(*argv, 1636 ebuf); 1637 readstate = B_TRUE; 1638 break; 1639 case TOK_AUTHALG: 1640 if (assoc->sadb_sa_auth != 0) { 1641 ERROR(ep, ebuf, gettext( 1642 "Can only specify " 1643 "single auth algorithm.\n")); 1644 break; 1645 } 1646 assoc->sadb_sa_auth = parsealg(*argv, 1647 IPSEC_PROTO_AH, ebuf); 1648 break; 1649 case TOK_ENCRALG: 1650 if (satype == SADB_SATYPE_AH) { 1651 ERROR(ep, ebuf, gettext("Cannot specify" 1652 " encryption with SA type ah.\n")); 1653 break; 1654 } 1655 if (assoc->sadb_sa_encrypt != 0) { 1656 ERROR(ep, ebuf, gettext( 1657 "Can only specify " 1658 "single encryption algorithm.\n")); 1659 break; 1660 } 1661 assoc->sadb_sa_encrypt = parsealg(*argv, 1662 IPSEC_PROTO_ESP, ebuf); 1663 break; 1664 case TOK_ENCAP: 1665 if (use_natt) { 1666 ERROR(ep, ebuf, gettext( 1667 "Can only specify single" 1668 " encapsulation.\n")); 1669 break; 1670 } 1671 if (strncmp(*argv, "udp", 3)) { 1672 ERROR(ep, ebuf, gettext( 1673 "Can only specify udp" 1674 " encapsulation.\n")); 1675 break; 1676 } 1677 use_natt = B_TRUE; 1678 /* set assoc flags later */ 1679 break; 1680 } 1681 argv++; 1682 break; 1683 case TOK_SRCPORT: 1684 if (srcport != 0) { 1685 ERROR(ep, ebuf, gettext("Can only specify " 1686 "single source port.\n")); 1687 break; 1688 } 1689 srcport = parsenum(*argv, B_TRUE, ebuf); 1690 argv++; 1691 break; 1692 case TOK_DSTPORT: 1693 if (dstport != 0) { 1694 ERROR(ep, ebuf, gettext("Can only specify " 1695 "single destination port.\n")); 1696 break; 1697 } 1698 dstport = parsenum(*argv, B_TRUE, ebuf); 1699 argv++; 1700 break; 1701 case TOK_ISRCPORT: 1702 alloc_inner = B_TRUE; 1703 if (isrcport != 0) { 1704 ERROR(ep, ebuf, gettext( 1705 "Can only specify " 1706 "single inner-source port.\n")); 1707 break; 1708 } 1709 isrcport = parsenum(*argv, B_TRUE, ebuf); 1710 argv++; 1711 break; 1712 case TOK_IDSTPORT: 1713 alloc_inner = B_TRUE; 1714 if (idstport != 0) { 1715 ERROR(ep, ebuf, gettext( 1716 "Can only specify " 1717 "single inner-destination port.\n")); 1718 break; 1719 } 1720 idstport = parsenum(*argv, B_TRUE, ebuf); 1721 argv++; 1722 break; 1723 case TOK_NATLPORT: 1724 if (natt_lport != 0) { 1725 ERROR(ep, ebuf, gettext( 1726 "Can only specify " 1727 "single NAT-T local port.\n")); 1728 break; 1729 } 1730 1731 if (natt_rport != 0) { 1732 ERROR(ep, ebuf, gettext( 1733 "Can only specify " 1734 "one of NAT-T remote and local port.\n")); 1735 break; 1736 } 1737 natt_lport = parsenum(*argv, B_TRUE, ebuf); 1738 argv++; 1739 break; 1740 case TOK_NATRPORT: 1741 if (natt_rport != 0) { 1742 ERROR(ep, ebuf, gettext( 1743 "Can only specify " 1744 "single NAT-T remote port.\n")); 1745 break; 1746 } 1747 1748 if (natt_lport != 0) { 1749 ERROR(ep, ebuf, gettext( 1750 "Can only specify " 1751 "one of NAT-T remote and local port.\n")); 1752 break; 1753 } 1754 natt_rport = parsenum(*argv, B_TRUE, ebuf); 1755 argv++; 1756 break; 1757 1758 case TOK_PROTO: 1759 if (proto != 0) { 1760 ERROR(ep, ebuf, gettext( 1761 "Can only specify " 1762 "single protocol.\n")); 1763 break; 1764 } 1765 proto = parsenum(*argv, B_TRUE, ebuf); 1766 argv++; 1767 break; 1768 case TOK_IPROTO: 1769 alloc_inner = B_TRUE; 1770 if (iproto != 0) { 1771 ERROR(ep, ebuf, gettext( 1772 "Can only specify " 1773 "single inner protocol.\n")); 1774 break; 1775 } 1776 iproto = parsenum(*argv, B_TRUE, ebuf); 1777 argv++; 1778 break; 1779 case TOK_SRCADDR: 1780 case TOK_SRCADDR6: 1781 if (src != NULL) { 1782 ERROR(ep, ebuf, gettext( 1783 "Can only specify " 1784 "single source address.\n")); 1785 break; 1786 } 1787 sa_len = parseaddr(*argv, &srchp, 1788 (token == TOK_SRCADDR6), ebuf); 1789 if (srchp == NULL) { 1790 ERROR1(ep, ebuf, gettext( 1791 "Unknown src address \"%s\"\n"), *argv); 1792 break; 1793 } 1794 argv++; 1795 /* 1796 * Round of the sockaddr length to an 8 byte 1797 * boundary to make PF_KEY happy. 1798 */ 1799 alloclen = sizeof (*src) + roundup(sa_len, 8); 1800 src = malloc(alloclen); 1801 if (src == NULL) 1802 Bail("malloc(src)"); 1803 totallen += alloclen; 1804 src->sadb_address_len = SADB_8TO64(alloclen); 1805 src->sadb_address_exttype = SADB_EXT_ADDRESS_SRC; 1806 src->sadb_address_reserved = 0; 1807 src->sadb_address_prefixlen = 0; 1808 src->sadb_address_proto = 0; 1809 if (srchp == &dummy.he) { 1810 /* 1811 * Single address with -n flag. 1812 */ 1813 sin6 = (struct sockaddr_in6 *)(src + 1); 1814 bzero(sin6, sizeof (*sin6)); 1815 sin6->sin6_family = AF_INET6; 1816 bcopy(srchp->h_addr_list[0], &sin6->sin6_addr, 1817 sizeof (struct in6_addr)); 1818 } 1819 break; 1820 case TOK_DSTADDR: 1821 case TOK_DSTADDR6: 1822 if (dst != NULL) { 1823 ERROR(ep, ebuf, gettext( 1824 "Can only specify single " 1825 "destination address.\n")); 1826 break; 1827 } 1828 sa_len = parseaddr(*argv, &dsthp, 1829 (token == TOK_DSTADDR6), ebuf); 1830 if (dsthp == NULL) { 1831 ERROR1(ep, ebuf, gettext( 1832 "Unknown dst address \"%s\"\n"), *argv); 1833 break; 1834 } 1835 argv++; 1836 alloclen = sizeof (*dst) + roundup(sa_len, 8); 1837 dst = malloc(alloclen); 1838 if (dst == NULL) 1839 Bail("malloc(dst)"); 1840 totallen += alloclen; 1841 dst->sadb_address_len = SADB_8TO64(alloclen); 1842 dst->sadb_address_exttype = SADB_EXT_ADDRESS_DST; 1843 dst->sadb_address_reserved = 0; 1844 dst->sadb_address_prefixlen = 0; 1845 dst->sadb_address_proto = 0; 1846 if (dsthp == &dummy.he) { 1847 /* 1848 * Single address with -n flag. 1849 */ 1850 sin6 = (struct sockaddr_in6 *)(dst + 1); 1851 bzero(sin6, sizeof (*sin6)); 1852 sin6->sin6_family = AF_INET6; 1853 bcopy(dsthp->h_addr_list[0], &sin6->sin6_addr, 1854 sizeof (struct in6_addr)); 1855 } 1856 break; 1857 case TOK_PROXYADDR: 1858 case TOK_PROXYADDR6: 1859 if (isrc != NULL) { 1860 ERROR(ep, ebuf, gettext( 1861 "Can only specify single " 1862 "proxy/inner-source address.\n")); 1863 break; 1864 } 1865 if ((pstr = strchr(*argv, '/')) != NULL) { 1866 /* Parse out the prefix. */ 1867 errno = 0; 1868 prefix = strtol(pstr + 1, NULL, 10); 1869 if (errno != 0) { 1870 ERROR1(ep, ebuf, gettext( 1871 "Invalid prefix %s."), pstr); 1872 break; 1873 } 1874 /* Recycle pstr */ 1875 alloclen = (int)(pstr - *argv); 1876 pstr = malloc(alloclen + 1); 1877 if (pstr == NULL) { 1878 Bail("malloc(pstr)"); 1879 } 1880 (void) strlcpy(pstr, *argv, alloclen + 1); 1881 } else { 1882 pstr = *argv; 1883 /* 1884 * Assume mapping to AF_INET6, and we're a host. 1885 * XXX some miscreants may still make classful 1886 * assumptions. If this is a problem, fix it 1887 * here. 1888 */ 1889 prefix = 128; 1890 } 1891 sa_len = parseaddr(pstr, &isrchp, 1892 (token == TOK_PROXYADDR6), ebuf); 1893 if (isrchp == NULL) { 1894 ERROR1(ep, ebuf, gettext( 1895 "Unknown proxy/inner-source address " 1896 "\"%s\"\n"), *argv); 1897 break; 1898 } 1899 if (pstr != *argv) 1900 free(pstr); 1901 argv++; 1902 alloclen = sizeof (*isrc) + roundup(sa_len, 8); 1903 isrc = malloc(alloclen); 1904 if (isrc == NULL) 1905 Bail("malloc(isrc)"); 1906 totallen += alloclen; 1907 isrc->sadb_address_len = SADB_8TO64(alloclen); 1908 isrc->sadb_address_exttype = SADB_EXT_ADDRESS_PROXY; 1909 isrc->sadb_address_reserved = 0; 1910 isrc->sadb_address_prefixlen = prefix; 1911 isrc->sadb_address_proto = 0; 1912 if (isrchp == &dummy.he || 1913 isrchp->h_addr_list[1] == NULL) { 1914 /* 1915 * Single address with -n flag or single name. 1916 */ 1917 sin6 = (struct sockaddr_in6 *)(isrc + 1); 1918 bzero(sin6, sizeof (*sin6)); 1919 sin6->sin6_family = AF_INET6; 1920 bcopy(isrchp->h_addr_list[0], &sin6->sin6_addr, 1921 sizeof (struct in6_addr)); 1922 /* 1923 * normalize prefixlen for IPv4-mapped 1924 * addresses. 1925 */ 1926 if (prefix <= 32 && 1927 IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) 1928 isrc->sadb_address_prefixlen += 96; 1929 alloc_inner = B_TRUE; 1930 } else { 1931 /* 1932 * If the proxy/isrc address is vague, don't 1933 * bother. 1934 */ 1935 totallen -= alloclen; 1936 free(isrc); 1937 isrc = NULL; 1938 WARN1(ep, ebuf, gettext( 1939 "Proxy/inner-source address %s " 1940 "is vague, not using.\n"), isrchp->h_name); 1941 freehostent(isrchp); 1942 isrchp = NULL; 1943 break; 1944 } 1945 break; 1946 case TOK_IDSTADDR: 1947 case TOK_IDSTADDR6: 1948 if (idst != NULL) { 1949 ERROR(ep, ebuf, gettext( 1950 "Can only specify single " 1951 "inner-destination address.\n")); 1952 break; 1953 } 1954 if ((pstr = strchr(*argv, '/')) != NULL) { 1955 /* Parse out the prefix. */ 1956 errno = 0; 1957 prefix = strtol(pstr + 1, NULL, 10); 1958 if (errno != 0) { 1959 ERROR1(ep, ebuf, gettext( 1960 "Invalid prefix %s.\n"), pstr); 1961 break; 1962 } 1963 /* Recycle pstr */ 1964 alloclen = (int)(pstr - *argv); 1965 pstr = malloc(alloclen + 1); 1966 if (pstr == NULL) { 1967 Bail("malloc(pstr)"); 1968 } 1969 (void) strlcpy(pstr, *argv, alloclen + 1); 1970 } else { 1971 pstr = *argv; 1972 /* 1973 * Assume mapping to AF_INET6, and we're a host. 1974 * XXX some miscreants may still make classful 1975 * assumptions. If this is a problem, fix it 1976 * here. 1977 */ 1978 prefix = 128; 1979 } 1980 sa_len = parseaddr(pstr, &idsthp, 1981 (token == TOK_IDSTADDR6), ebuf); 1982 if (idsthp == NULL) { 1983 ERROR1(ep, ebuf, gettext( 1984 "Unknown Inner Src address " 1985 " \"%s\"\n"), *argv); 1986 break; 1987 } 1988 if (pstr != *argv) 1989 free(pstr); 1990 argv++; 1991 alloclen = sizeof (*idst) + roundup(sa_len, 8); 1992 idst = malloc(alloclen); 1993 if (idst == NULL) 1994 Bail("malloc(idst)"); 1995 totallen += alloclen; 1996 idst->sadb_address_len = SADB_8TO64(alloclen); 1997 idst->sadb_address_exttype = 1998 SADB_X_EXT_ADDRESS_INNER_DST; 1999 idst->sadb_address_reserved = 0; 2000 idst->sadb_address_prefixlen = prefix; 2001 idst->sadb_address_proto = 0; 2002 if (idsthp == &dummy.he || 2003 idsthp->h_addr_list[1] == NULL) { 2004 /* 2005 * Single address with -n flag or single name. 2006 */ 2007 sin6 = (struct sockaddr_in6 *)(idst + 1); 2008 bzero(sin6, sizeof (*sin6)); 2009 sin6->sin6_family = AF_INET6; 2010 bcopy(idsthp->h_addr_list[0], &sin6->sin6_addr, 2011 sizeof (struct in6_addr)); 2012 /* 2013 * normalize prefixlen for IPv4-mapped 2014 * addresses. 2015 */ 2016 if (prefix <= 32 && 2017 IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) 2018 idst->sadb_address_prefixlen += 96; 2019 alloc_inner = B_TRUE; 2020 } else { 2021 /* 2022 * If the idst address is vague, don't bother. 2023 */ 2024 totallen -= alloclen; 2025 free(idst); 2026 idst = NULL; 2027 WARN1(ep, ebuf, gettext( 2028 "Inner destination address %s " 2029 "is vague, not using.\n"), idsthp->h_name); 2030 freehostent(idsthp); 2031 idsthp = NULL; 2032 break; 2033 } 2034 break; 2035 case TOK_NATLOC: 2036 if (natt_local != NULL) { 2037 ERROR(ep, ebuf, gettext( 2038 "Can only specify " 2039 "single NAT-T local address.\n")); 2040 break; 2041 } 2042 sa_len = parseaddr(*argv, &natt_lhp, 0, ebuf); 2043 if (natt_lhp == NULL) { 2044 ERROR1(ep, ebuf, gettext( 2045 "Unknown NAT-T local address \"%s\"\n"), 2046 *argv); 2047 break; 2048 } 2049 argv++; 2050 /* 2051 * Round of the sockaddr length to an 8 byte 2052 * boundary to make PF_KEY happy. 2053 */ 2054 alloclen = sizeof (*natt_local) + roundup(sa_len, 8); 2055 natt_local = malloc(alloclen); 2056 if (natt_local == NULL) 2057 Bail("malloc(natt_local)"); 2058 totallen += alloclen; 2059 natt_local->sadb_address_len = SADB_8TO64(alloclen); 2060 natt_local->sadb_address_exttype = 2061 SADB_X_EXT_ADDRESS_NATT_LOC; 2062 natt_local->sadb_address_reserved = 0; 2063 natt_local->sadb_address_prefixlen = 0; 2064 natt_local->sadb_address_proto = 0; 2065 if (natt_lhp == &dummy.he || 2066 natt_lhp->h_addr_list[1] == NULL) { 2067 /* 2068 * Single address with -n flag or single name. 2069 */ 2070 sin6 = (struct sockaddr_in6 *)(natt_local + 1); 2071 bzero(sin6, sizeof (*sin6)); 2072 sin6->sin6_family = AF_INET6; 2073 bcopy(natt_lhp->h_addr_list[0], 2074 &sin6->sin6_addr, sizeof (struct in6_addr)); 2075 } else { 2076 /* 2077 * If the nat-local address is vague, don't 2078 * bother. 2079 */ 2080 totallen -= alloclen; 2081 free(natt_local); 2082 natt_local = NULL; 2083 WARN1(ep, ebuf, gettext( 2084 "NAT-T local address %s " 2085 "is vague, not using.\n"), 2086 natt_lhp->h_name); 2087 freehostent(natt_lhp); 2088 natt_lhp = NULL; 2089 break; 2090 } 2091 break; 2092 case TOK_NATREM: 2093 if (natt_remote != NULL) { 2094 ERROR(ep, ebuf, gettext( 2095 "Can only specify " 2096 "single NAT-T remote address.\n")); 2097 break; 2098 } 2099 sa_len = parseaddr(*argv, &natt_rhp, 0, ebuf); 2100 if (natt_rhp == NULL) { 2101 ERROR1(ep, ebuf, gettext( 2102 "Unknown NAT-T remote address \"%s\"\n"), 2103 *argv); 2104 break; 2105 } 2106 argv++; 2107 /* 2108 * Round of the sockaddr length to an 8 byte 2109 * boundary to make PF_KEY happy. 2110 */ 2111 alloclen = sizeof (*natt_remote) + roundup(sa_len, 8); 2112 natt_remote = malloc(alloclen); 2113 if (natt_remote == NULL) 2114 Bail("malloc(natt_remote)"); 2115 totallen += alloclen; 2116 natt_remote->sadb_address_len = SADB_8TO64(alloclen); 2117 natt_remote->sadb_address_exttype = 2118 SADB_X_EXT_ADDRESS_NATT_REM; 2119 natt_remote->sadb_address_reserved = 0; 2120 natt_remote->sadb_address_prefixlen = 0; 2121 natt_remote->sadb_address_proto = 0; 2122 if (natt_rhp == &dummy.he || 2123 natt_rhp->h_addr_list[1] == NULL) { 2124 /* 2125 * Single address with -n flag or single name. 2126 */ 2127 sin6 = (struct sockaddr_in6 *)(natt_remote + 1); 2128 bzero(sin6, sizeof (*sin6)); 2129 sin6->sin6_family = AF_INET6; 2130 bcopy(natt_rhp->h_addr_list[0], 2131 &sin6->sin6_addr, sizeof (struct in6_addr)); 2132 } else { 2133 /* 2134 * If the nat-renote address is vague, don't 2135 * bother. 2136 */ 2137 totallen -= alloclen; 2138 free(natt_remote); 2139 natt_remote = NULL; 2140 WARN1(ep, ebuf, gettext( 2141 "NAT-T remote address %s " 2142 "is vague, not using.\n"), 2143 natt_rhp->h_name); 2144 freehostent(natt_rhp); 2145 natt_rhp = NULL; 2146 break; 2147 } 2148 break; 2149 case TOK_ENCRKEY: 2150 if (encrypt != NULL) { 2151 ERROR(ep, ebuf, gettext( 2152 "Can only specify " 2153 "single encryption key.\n")); 2154 break; 2155 } 2156 if (assoc->sadb_sa_encrypt == SADB_EALG_NULL) { 2157 FATAL(ep, ebuf, gettext( 2158 "Cannot specify a key with NULL " 2159 "encryption algorithm.\n")); 2160 break; 2161 } 2162 encrypt = parsekey(*argv, ebuf); 2163 argv++; 2164 if (encrypt == NULL) { 2165 ERROR(ep, ebuf, gettext( 2166 "Invalid encryption key.\n")); 2167 break; 2168 } 2169 totallen += SADB_64TO8(encrypt->sadb_key_len); 2170 encrypt->sadb_key_exttype = SADB_EXT_KEY_ENCRYPT; 2171 break; 2172 case TOK_AUTHKEY: 2173 if (auth != NULL) { 2174 ERROR(ep, ebuf, gettext( 2175 "Can only specify single" 2176 " authentication key.\n")); 2177 break; 2178 } 2179 auth = parsekey(*argv, ebuf); 2180 argv++; 2181 if (auth == NULL) { 2182 ERROR(ep, ebuf, gettext( 2183 "Invalid authentication key.\n")); 2184 break; 2185 } 2186 totallen += SADB_64TO8(auth->sadb_key_len); 2187 auth->sadb_key_exttype = SADB_EXT_KEY_AUTH; 2188 break; 2189 case TOK_SRCIDTYPE: 2190 if (*argv == NULL || *(argv + 1) == NULL) { 2191 FATAL(ep, ebuf, gettext( 2192 "Unexpected end of command " 2193 "line - Expecting Src Type.\n")); 2194 /* NOTREACHED */ 2195 break; 2196 } 2197 if (srcid != NULL) { 2198 ERROR(ep, ebuf, gettext( 2199 "Can only specify single" 2200 " source certificate identity.\n")); 2201 break; 2202 } 2203 alloclen = sizeof (*srcid) + 2204 roundup(strlen(*(argv + 1)) + 1, 8); 2205 srcid = malloc(alloclen); 2206 if (srcid == NULL) 2207 Bail("malloc(srcid)"); 2208 totallen += alloclen; 2209 srcid->sadb_ident_type = parseidtype(*argv, ebuf); 2210 argv++; 2211 srcid->sadb_ident_len = SADB_8TO64(alloclen); 2212 srcid->sadb_ident_exttype = SADB_EXT_IDENTITY_SRC; 2213 srcid->sadb_ident_reserved = 0; 2214 srcid->sadb_ident_id = 0; /* Not useful here. */ 2215 (void) strlcpy((char *)(srcid + 1), *argv, alloclen); 2216 argv++; 2217 break; 2218 case TOK_DSTIDTYPE: 2219 if (*argv == NULL || *(argv + 1) == NULL) { 2220 ERROR(ep, ebuf, gettext( 2221 "Unexpected end of command" 2222 " line - expecting dst type.\n")); 2223 break; 2224 } 2225 if (dstid != NULL) { 2226 ERROR(ep, ebuf, gettext( 2227 "Can only specify single destination " 2228 "certificate identity.\n")); 2229 break; 2230 } 2231 alloclen = sizeof (*dstid) + 2232 roundup(strlen(*(argv + 1)) + 1, 8); 2233 dstid = malloc(alloclen); 2234 if (dstid == NULL) 2235 Bail("malloc(dstid)"); 2236 totallen += alloclen; 2237 dstid->sadb_ident_type = parseidtype(*argv, ebuf); 2238 argv++; 2239 dstid->sadb_ident_len = SADB_8TO64(alloclen); 2240 dstid->sadb_ident_exttype = SADB_EXT_IDENTITY_DST; 2241 dstid->sadb_ident_reserved = 0; 2242 dstid->sadb_ident_id = 0; /* Not useful here. */ 2243 (void) strlcpy((char *)(dstid + 1), *argv, alloclen); 2244 argv++; 2245 break; 2246 case TOK_HARD_ALLOC: 2247 case TOK_HARD_BYTES: 2248 case TOK_HARD_ADDTIME: 2249 case TOK_HARD_USETIME: 2250 if (hard == NULL) { 2251 hard = malloc(sizeof (*hard)); 2252 if (hard == NULL) 2253 Bail("malloc(hard_lifetime)"); 2254 bzero(hard, sizeof (*hard)); 2255 hard->sadb_lifetime_exttype = 2256 SADB_EXT_LIFETIME_HARD; 2257 hard->sadb_lifetime_len = 2258 SADB_8TO64(sizeof (*hard)); 2259 totallen += sizeof (*hard); 2260 } 2261 switch (token) { 2262 case TOK_HARD_ALLOC: 2263 if (hard->sadb_lifetime_allocations != 0) { 2264 ERROR(ep, ebuf, gettext( 2265 "Can only specify single" 2266 " hard allocation limit.\n")); 2267 break; 2268 } 2269 hard->sadb_lifetime_allocations = 2270 (uint32_t)parsenum(*argv, B_TRUE, ebuf); 2271 break; 2272 case TOK_HARD_BYTES: 2273 if (hard->sadb_lifetime_bytes != 0) { 2274 ERROR(ep, ebuf, gettext( 2275 "Can only specify " 2276 "single hard byte limit.\n")); 2277 break; 2278 } 2279 hard->sadb_lifetime_bytes = parsenum(*argv, 2280 B_TRUE, ebuf); 2281 break; 2282 case TOK_HARD_ADDTIME: 2283 if (hard->sadb_lifetime_addtime != 0) { 2284 ERROR(ep, ebuf, gettext( 2285 "Can only specify " 2286 "single past-add lifetime.\n")); 2287 break; 2288 } 2289 hard->sadb_lifetime_addtime = parsenum(*argv, 2290 B_TRUE, ebuf); 2291 break; 2292 case TOK_HARD_USETIME: 2293 if (hard->sadb_lifetime_usetime != 0) { 2294 ERROR(ep, ebuf, gettext( 2295 "Can only specify " 2296 "single past-use lifetime.\n")); 2297 break; 2298 } 2299 hard->sadb_lifetime_usetime = parsenum(*argv, 2300 B_TRUE, ebuf); 2301 break; 2302 } 2303 argv++; 2304 break; 2305 case TOK_SOFT_ALLOC: 2306 case TOK_SOFT_BYTES: 2307 case TOK_SOFT_ADDTIME: 2308 case TOK_SOFT_USETIME: 2309 if (soft == NULL) { 2310 soft = malloc(sizeof (*soft)); 2311 if (soft == NULL) 2312 Bail("malloc(soft_lifetime)"); 2313 bzero(soft, sizeof (*soft)); 2314 soft->sadb_lifetime_exttype = 2315 SADB_EXT_LIFETIME_SOFT; 2316 soft->sadb_lifetime_len = 2317 SADB_8TO64(sizeof (*soft)); 2318 totallen += sizeof (*soft); 2319 } 2320 switch (token) { 2321 case TOK_SOFT_ALLOC: 2322 if (soft->sadb_lifetime_allocations != 0) { 2323 ERROR(ep, ebuf, gettext( 2324 "Can only specify single" 2325 " soft allocation limit.\n")); 2326 break; 2327 } 2328 soft->sadb_lifetime_allocations = 2329 (uint32_t)parsenum(*argv, B_TRUE, ebuf); 2330 break; 2331 case TOK_SOFT_BYTES: 2332 if (soft->sadb_lifetime_bytes != 0) { 2333 ERROR(ep, ebuf, gettext( 2334 "Can only specify single" 2335 " soft byte limit.\n")); 2336 break; 2337 } 2338 soft->sadb_lifetime_bytes = parsenum(*argv, 2339 B_TRUE, ebuf); 2340 break; 2341 case TOK_SOFT_ADDTIME: 2342 if (soft->sadb_lifetime_addtime != 0) { 2343 ERROR(ep, ebuf, gettext( 2344 "Can only specify single" 2345 " past-add lifetime.\n")); 2346 break; 2347 } 2348 soft->sadb_lifetime_addtime = parsenum(*argv, 2349 B_TRUE, ebuf); 2350 break; 2351 case TOK_SOFT_USETIME: 2352 if (soft->sadb_lifetime_usetime != 0) { 2353 ERROR(ep, ebuf, gettext( 2354 "Can only specify single" 2355 " past-use lifetime.\n")); 2356 break; 2357 } 2358 soft->sadb_lifetime_usetime = parsenum(*argv, 2359 B_TRUE, ebuf); 2360 break; 2361 } 2362 argv++; 2363 break; 2364 default: 2365 ERROR1(ep, ebuf, gettext( 2366 "Don't use extension %s for add/update.\n"), 2367 *(argv - 1)); 2368 break; 2369 } 2370 } while (token != TOK_EOF); 2371 2372 handle_errors(ep, ebuf, B_TRUE, B_FALSE); 2373 2374 /* 2375 * If we specify inner ports w/o addresses, we still need to 2376 * allocate. Also, if we have one inner address, we need the 2377 * other, even if we don't specify anything. 2378 */ 2379 if (alloc_inner && idst == NULL) { 2380 /* Allocate zeroed-out. */ 2381 alloclen = sizeof (*idst) + sizeof (struct sockaddr_in6); 2382 idst = calloc(1, alloclen); 2383 if (idst == NULL) { 2384 Bail("malloc(implicit idst)"); 2385 } 2386 totallen += alloclen; 2387 idst->sadb_address_len = SADB_8TO64(alloclen); 2388 idst->sadb_address_exttype = SADB_X_EXT_ADDRESS_INNER_DST; 2389 sin6 = (struct sockaddr_in6 *)(idst + 1); 2390 sin6->sin6_family = AF_INET6; 2391 } 2392 2393 if (alloc_inner && isrc == NULL) { 2394 /* Allocate zeroed-out. */ 2395 alloclen = sizeof (*isrc) + sizeof (struct sockaddr_in6); 2396 isrc = calloc(1, alloclen); 2397 if (isrc == NULL) { 2398 Bail("malloc(implicit isrc)"); 2399 } 2400 totallen += alloclen; 2401 isrc->sadb_address_len = SADB_8TO64(alloclen); 2402 isrc->sadb_address_exttype = SADB_X_EXT_ADDRESS_INNER_SRC; 2403 sin6 = (struct sockaddr_in6 *)(isrc + 1); 2404 sin6->sin6_family = AF_INET6; 2405 } 2406 2407 /* 2408 * Okay, so now I have all of the potential extensions! 2409 * Allocate a single contiguous buffer. Keep in mind that it'll 2410 * be enough because the key itself will be yanked. 2411 */ 2412 2413 if (src == NULL && dst != NULL) { 2414 /* 2415 * Set explicit unspecified source address. 2416 */ 2417 size_t lenbytes = SADB_64TO8(dst->sadb_address_len); 2418 2419 unspec_src = B_TRUE; 2420 totallen += lenbytes; 2421 src = malloc(lenbytes); 2422 if (src == NULL) 2423 Bail("malloc(implicit src)"); 2424 /* Confusing, but we're copying from DST to SRC. :) */ 2425 bcopy(dst, src, lenbytes); 2426 src->sadb_address_exttype = SADB_EXT_ADDRESS_SRC; 2427 sin6 = (struct sockaddr_in6 *)(src + 1); 2428 bzero(sin6, sizeof (*sin6)); 2429 sin6->sin6_family = AF_INET6; 2430 } 2431 2432 msg.sadb_msg_len = SADB_8TO64(totallen); 2433 2434 buffer = malloc(totallen); 2435 nexthdr = buffer; 2436 bcopy(&msg, nexthdr, sizeof (msg)); 2437 nexthdr += SADB_8TO64(sizeof (msg)); 2438 if (assoc != NULL) { 2439 if (assoc->sadb_sa_spi == 0) { 2440 ERROR1(ep, ebuf, gettext( 2441 "The SPI value is missing for " 2442 "the association you wish to %s.\n"), thiscmd); 2443 } 2444 if (assoc->sadb_sa_auth == 0 && assoc->sadb_sa_encrypt == 0 && 2445 cmd == CMD_ADD) { 2446 free(assoc); 2447 FATAL(ep, ebuf, gettext( 2448 "Select at least one algorithm " 2449 "for this add.\n")); 2450 } 2451 2452 /* Hack to let user specify NULL ESP implicitly. */ 2453 if (msg.sadb_msg_satype == SADB_SATYPE_ESP && 2454 assoc->sadb_sa_encrypt == 0) 2455 assoc->sadb_sa_encrypt = SADB_EALG_NULL; 2456 2457 /* 0 is an actual value. Print a warning if it was entered. */ 2458 if (assoc->sadb_sa_state == 0) { 2459 if (readstate) { 2460 ERROR(ep, ebuf, gettext( 2461 "WARNING: Cannot set LARVAL SA state.\n")); 2462 } 2463 assoc->sadb_sa_state = SADB_SASTATE_MATURE; 2464 } 2465 2466 if (use_natt) { 2467 if (natt_remote != NULL) 2468 assoc->sadb_sa_flags |= SADB_X_SAFLAGS_NATT_REM; 2469 if (natt_local != NULL) 2470 assoc->sadb_sa_flags |= SADB_X_SAFLAGS_NATT_LOC; 2471 } 2472 2473 if (alloc_inner) { 2474 /* 2475 * For now, assume RFC 3884's dream of transport-mode 2476 * SAs with inner IP address selectors will not 2477 * happen. 2478 */ 2479 assoc->sadb_sa_flags |= SADB_X_SAFLAGS_TUNNEL; 2480 if (proto != 0 && proto != IPPROTO_ENCAP && 2481 proto != IPPROTO_IPV6) { 2482 ERROR1(ep, ebuf, gettext( 2483 "WARNING: Protocol type %d not " 2484 "for use with Tunnel-Mode SA.\n"), proto); 2485 /* Continue and let PF_KEY scream... */ 2486 } 2487 } 2488 2489 bcopy(assoc, nexthdr, SADB_64TO8(assoc->sadb_sa_len)); 2490 nexthdr += assoc->sadb_sa_len; 2491 /* Save the SPI for the case of an error. */ 2492 spi = assoc->sadb_sa_spi; 2493 free(assoc); 2494 } else { 2495 ERROR1(ep, ebuf, gettext( 2496 "Need SA parameters for %s.\n"), thiscmd); 2497 } 2498 2499 if (hard != NULL) { 2500 bcopy(hard, nexthdr, SADB_64TO8(hard->sadb_lifetime_len)); 2501 nexthdr += hard->sadb_lifetime_len; 2502 free(hard); 2503 } 2504 2505 if (soft != NULL) { 2506 bcopy(soft, nexthdr, SADB_64TO8(soft->sadb_lifetime_len)); 2507 nexthdr += soft->sadb_lifetime_len; 2508 free(soft); 2509 } 2510 2511 if (encrypt == NULL && auth == NULL && cmd == CMD_ADD) { 2512 ERROR(ep, ebuf, gettext( 2513 "Must have at least one key for an add.\n")); 2514 } 2515 2516 if (encrypt != NULL) { 2517 bcopy(encrypt, nexthdr, SADB_64TO8(encrypt->sadb_key_len)); 2518 nexthdr += encrypt->sadb_key_len; 2519 bzero(encrypt, SADB_64TO8(encrypt->sadb_key_len)); 2520 free(encrypt); 2521 } 2522 2523 if (auth != NULL) { 2524 bcopy(auth, nexthdr, SADB_64TO8(auth->sadb_key_len)); 2525 nexthdr += auth->sadb_key_len; 2526 bzero(auth, SADB_64TO8(auth->sadb_key_len)); 2527 free(auth); 2528 } 2529 2530 if (srcid != NULL) { 2531 bcopy(srcid, nexthdr, SADB_64TO8(srcid->sadb_ident_len)); 2532 nexthdr += srcid->sadb_ident_len; 2533 free(srcid); 2534 } 2535 2536 if (dstid != NULL) { 2537 bcopy(dstid, nexthdr, SADB_64TO8(dstid->sadb_ident_len)); 2538 nexthdr += dstid->sadb_ident_len; 2539 free(dstid); 2540 } 2541 2542 if (dst != NULL) { 2543 bcopy(dst, nexthdr, SADB_64TO8(dst->sadb_address_len)); 2544 free(dst); 2545 dst = (struct sadb_address *)nexthdr; 2546 dst->sadb_address_proto = proto; 2547 ((struct sockaddr_in6 *)(dst + 1))->sin6_port = htons(dstport); 2548 nexthdr += dst->sadb_address_len; 2549 } else { 2550 FATAL1(ep, ebuf, gettext( 2551 "Need destination address for %s.\n"), thiscmd); 2552 } 2553 2554 if (use_natt) { 2555 if (natt_remote == NULL && natt_local == NULL) { 2556 ERROR(ep, ebuf, gettext( 2557 "Must specify NAT-T remote or local address " 2558 "for UDP encapsulation.\n")); 2559 } 2560 2561 if (natt_lport != 0 && natt_local == NULL) { 2562 ERROR(ep, ebuf, gettext( 2563 "If NAT-T local port is specified, NAT-T " 2564 "local address must also be specified.\n")); 2565 } 2566 2567 if (natt_rport != 0 && natt_remote == NULL) { 2568 ERROR(ep, ebuf, gettext( 2569 "If NAT-T remote port is specified, NAT-T " 2570 "remote address must also be specified.\n")); 2571 } 2572 2573 if (natt_remote != NULL) { 2574 bcopy(natt_remote, nexthdr, 2575 SADB_64TO8(natt_remote->sadb_address_len)); 2576 free(natt_remote); 2577 natt_remote = (struct sadb_address *)nexthdr; 2578 nexthdr += natt_remote->sadb_address_len; 2579 ((struct sockaddr_in6 *)(natt_remote + 1))->sin6_port = 2580 htons(natt_rport); 2581 } 2582 2583 if (natt_local != NULL) { 2584 bcopy(natt_local, nexthdr, 2585 SADB_64TO8(natt_local->sadb_address_len)); 2586 free(natt_local); 2587 natt_local = (struct sadb_address *)nexthdr; 2588 nexthdr += natt_local->sadb_address_len; 2589 ((struct sockaddr_in6 *)(natt_local + 1))->sin6_port = 2590 htons(natt_lport); 2591 } 2592 } 2593 2594 handle_errors(ep, ebuf, B_TRUE, B_FALSE); 2595 2596 /* 2597 * PF_KEY requires a source address extension, even if the source 2598 * address itself is unspecified. (See "Set explicit unspecified..." 2599 * code fragment above. Destination reality check was above.) 2600 */ 2601 bcopy(src, nexthdr, SADB_64TO8(src->sadb_address_len)); 2602 free(src); 2603 src = (struct sadb_address *)nexthdr; 2604 src->sadb_address_proto = proto; 2605 ((struct sockaddr_in6 *)(src + 1))->sin6_port = htons(srcport); 2606 nexthdr += src->sadb_address_len; 2607 2608 if (isrc != NULL) { 2609 bcopy(isrc, nexthdr, SADB_64TO8(isrc->sadb_address_len)); 2610 free(isrc); 2611 isrc = (struct sadb_address *)nexthdr; 2612 isrc->sadb_address_proto = iproto; 2613 ((struct sockaddr_in6 *)(isrc + 1))->sin6_port = 2614 htons(isrcport); 2615 nexthdr += isrc->sadb_address_len; 2616 } 2617 2618 if (idst != NULL) { 2619 bcopy(idst, nexthdr, SADB_64TO8(idst->sadb_address_len)); 2620 free(idst); 2621 idst = (struct sadb_address *)nexthdr; 2622 idst->sadb_address_proto = iproto; 2623 ((struct sockaddr_in6 *)(idst + 1))->sin6_port = 2624 htons(idstport); 2625 nexthdr += idst->sadb_address_len; 2626 } 2627 2628 if (cflag) { 2629 /* 2630 * Assume the checked cmd would have worked if it was actually 2631 * used. doaddresses() will increment lines_added if it 2632 * succeeds. 2633 */ 2634 lines_added++; 2635 } else { 2636 doaddresses((cmd == CMD_ADD) ? SADB_ADD : SADB_UPDATE, satype, 2637 cmd, srchp, dsthp, src, dst, unspec_src, buffer, totallen, 2638 spi, ebuf); 2639 } 2640 2641 if (isrchp != NULL && isrchp != &dummy.he) 2642 freehostent(isrchp); 2643 if (idsthp != NULL && idsthp != &dummy.he) 2644 freehostent(idsthp); 2645 if (srchp != NULL && srchp != &dummy.he) 2646 freehostent(srchp); 2647 if (dsthp != NULL && dsthp != &dummy.he) 2648 freehostent(dsthp); 2649 if (natt_lhp != NULL && natt_lhp != &dummy.he) 2650 freehostent(natt_lhp); 2651 if (natt_rhp != NULL && natt_rhp != &dummy.he) 2652 freehostent(natt_rhp); 2653 2654 free(ebuf); 2655 free(buffer); 2656 } 2657 2658 /* 2659 * DELETE and GET are similar, in that they only need the extensions 2660 * required to _find_ an SA, and then either delete it or obtain its 2661 * information. 2662 */ 2663 static void 2664 dodelget(int cmd, int satype, char *argv[], char *ebuf) 2665 { 2666 struct sadb_msg *msg = (struct sadb_msg *)get_buffer; 2667 uint64_t *nextext; 2668 struct sadb_sa *assoc = NULL; 2669 struct sadb_address *src = NULL, *dst = NULL; 2670 int next, token, sa_len; 2671 char *thiscmd; 2672 uint32_t spi; 2673 struct hostent *srchp = NULL, *dsthp = NULL; 2674 struct sockaddr_in6 *sin6; 2675 boolean_t unspec_src = B_TRUE; 2676 uint16_t srcport = 0, dstport = 0; 2677 uint8_t proto = 0; 2678 char *ep = NULL; 2679 2680 msg_init(msg, ((cmd == CMD_GET) ? SADB_GET : SADB_DELETE), 2681 (uint8_t)satype); 2682 /* Set the first extension header to right past the base message. */ 2683 nextext = (uint64_t *)(msg + 1); 2684 bzero(nextext, sizeof (get_buffer) - sizeof (*msg)); 2685 2686 thiscmd = (cmd == CMD_GET) ? "get" : "delete"; 2687 2688 #define ALLOC_ADDR_EXT(ext, exttype) \ 2689 (ext) = (struct sadb_address *)nextext; \ 2690 nextext = (uint64_t *)((ext) + 1); \ 2691 nextext += SADB_8TO64(roundup(sa_len, 8)); \ 2692 (ext)->sadb_address_exttype = exttype; \ 2693 (ext)->sadb_address_len = nextext - ((uint64_t *)ext); 2694 2695 /* Assume last element in argv is set to NULL. */ 2696 do { 2697 token = parseextval(*argv, &next); 2698 argv++; 2699 switch (token) { 2700 case TOK_EOF: 2701 /* Do nothing, I'm done. */ 2702 break; 2703 case TOK_UNKNOWN: 2704 ERROR1(ep, ebuf, gettext( 2705 "Unknown extension field \"%s\"\n"), *(argv - 1)); 2706 break; 2707 case TOK_SPI: 2708 if (assoc != NULL) { 2709 ERROR(ep, ebuf, gettext( 2710 "Can only specify single SPI value.\n")); 2711 break; 2712 } 2713 assoc = (struct sadb_sa *)nextext; 2714 nextext = (uint64_t *)(assoc + 1); 2715 assoc->sadb_sa_len = SADB_8TO64(sizeof (*assoc)); 2716 assoc->sadb_sa_exttype = SADB_EXT_SA; 2717 assoc->sadb_sa_spi = htonl((uint32_t)parsenum(*argv, 2718 B_TRUE, ebuf)); 2719 spi = assoc->sadb_sa_spi; 2720 argv++; 2721 break; 2722 case TOK_SRCPORT: 2723 if (srcport != 0) { 2724 ERROR(ep, ebuf, gettext( 2725 "Can only specify single source port.\n")); 2726 break; 2727 } 2728 srcport = parsenum(*argv, B_TRUE, ebuf); 2729 argv++; 2730 break; 2731 case TOK_DSTPORT: 2732 if (dstport != 0) { 2733 ERROR(ep, ebuf, gettext( 2734 "Can only " 2735 "specify single destination port.\n")); 2736 break; 2737 } 2738 dstport = parsenum(*argv, B_TRUE, ebuf); 2739 argv++; 2740 break; 2741 case TOK_PROTO: 2742 if (proto != 0) { 2743 ERROR(ep, ebuf, gettext( 2744 "Can only specify single protocol.\n")); 2745 break; 2746 } 2747 proto = parsenum(*argv, B_TRUE, ebuf); 2748 argv++; 2749 break; 2750 case TOK_SRCADDR: 2751 case TOK_SRCADDR6: 2752 if (src != NULL) { 2753 ERROR(ep, ebuf, gettext( 2754 "Can only specify single source addr.\n")); 2755 break; 2756 } 2757 sa_len = parseaddr(*argv, &srchp, 2758 (token == TOK_SRCADDR6), ebuf); 2759 if (srchp == NULL) { 2760 ERROR1(ep, ebuf, gettext( 2761 "Unknown source address \"%s\"\n"), *argv); 2762 break; 2763 } 2764 argv++; 2765 2766 unspec_src = B_FALSE; 2767 2768 ALLOC_ADDR_EXT(src, SADB_EXT_ADDRESS_SRC); 2769 2770 if (srchp == &dummy.he) { 2771 /* 2772 * Single address with -n flag. 2773 */ 2774 sin6 = (struct sockaddr_in6 *)(src + 1); 2775 bzero(sin6, sizeof (*sin6)); 2776 sin6->sin6_family = AF_INET6; 2777 bcopy(srchp->h_addr_list[0], &sin6->sin6_addr, 2778 sizeof (struct in6_addr)); 2779 } 2780 /* The rest is pre-bzeroed for us. */ 2781 break; 2782 case TOK_DSTADDR: 2783 case TOK_DSTADDR6: 2784 if (dst != NULL) { 2785 ERROR(ep, ebuf, gettext( 2786 "Can only specify single destination " 2787 "address.\n")); 2788 break; 2789 } 2790 sa_len = parseaddr(*argv, &dsthp, 2791 (token == TOK_SRCADDR6), ebuf); 2792 if (dsthp == NULL) { 2793 ERROR1(ep, ebuf, gettext( 2794 "Unknown destination address \"%s\"\n"), 2795 *argv); 2796 break; 2797 } 2798 argv++; 2799 2800 ALLOC_ADDR_EXT(dst, SADB_EXT_ADDRESS_DST); 2801 2802 if (dsthp == &dummy.he) { 2803 /* 2804 * Single address with -n flag. 2805 */ 2806 sin6 = (struct sockaddr_in6 *)(dst + 1); 2807 bzero(sin6, sizeof (*sin6)); 2808 sin6->sin6_family = AF_INET6; 2809 bcopy(dsthp->h_addr_list[0], &sin6->sin6_addr, 2810 sizeof (struct in6_addr)); 2811 } 2812 /* The rest is pre-bzeroed for us. */ 2813 break; 2814 default: 2815 ERROR2(ep, ebuf, gettext( 2816 "Don't use extension %s for '%s' command.\n"), 2817 *(argv - 1), thiscmd); 2818 break; 2819 } 2820 } while (token != TOK_EOF); 2821 2822 handle_errors(ep, ebuf, B_TRUE, B_FALSE); 2823 2824 if ((srcport != 0) && (src == NULL)) { 2825 ALLOC_ADDR_EXT(src, SADB_EXT_ADDRESS_SRC); 2826 sin6 = (struct sockaddr_in6 *)(src + 1); 2827 src->sadb_address_proto = proto; 2828 bzero(sin6, sizeof (*sin6)); 2829 sin6->sin6_family = AF_INET6; 2830 sin6->sin6_port = htons(srcport); 2831 } 2832 2833 if ((dstport != 0) && (dst == NULL)) { 2834 ALLOC_ADDR_EXT(dst, SADB_EXT_ADDRESS_DST); 2835 sin6 = (struct sockaddr_in6 *)(dst + 1); 2836 src->sadb_address_proto = proto; 2837 bzero(sin6, sizeof (*sin6)); 2838 sin6->sin6_family = AF_INET6; 2839 sin6->sin6_port = htons(dstport); 2840 } 2841 2842 /* So I have enough of the message to send it down! */ 2843 msg->sadb_msg_len = nextext - get_buffer; 2844 2845 if (assoc == NULL) { 2846 FATAL1(ep, ebuf, gettext( 2847 "Need SA parameters for %s.\n"), thiscmd); 2848 } 2849 2850 if (cflag) { 2851 /* 2852 * Assume the checked cmd would have worked if it was actually 2853 * used. doaddresses() will increment lines_added if it 2854 * succeeds. 2855 */ 2856 lines_added++; 2857 } else { 2858 doaddresses((cmd == CMD_GET) ? SADB_GET : SADB_DELETE, satype, 2859 cmd, srchp, dsthp, src, dst, unspec_src, get_buffer, 2860 sizeof (get_buffer), spi, NULL); 2861 } 2862 2863 if (srchp != NULL && srchp != &dummy.he) 2864 freehostent(srchp); 2865 if (dsthp != NULL && dsthp != &dummy.he) 2866 freehostent(dsthp); 2867 } 2868 2869 /* 2870 * "ipseckey monitor" should exit very gracefully if ^C is tapped. 2871 */ 2872 static void 2873 monitor_catch(int signal) 2874 { 2875 errx(signal, gettext("Bailing on signal %d."), signal); 2876 } 2877 2878 /* 2879 * Loop forever, listening on PF_KEY messages. 2880 */ 2881 static void 2882 domonitor(boolean_t passive) 2883 { 2884 struct sadb_msg *samsg; 2885 int rc; 2886 2887 /* Catch ^C. */ 2888 (void) signal(SIGINT, monitor_catch); 2889 2890 samsg = (struct sadb_msg *)get_buffer; 2891 if (!passive) { 2892 (void) printf(gettext("Actively")); 2893 msg_init(samsg, SADB_X_PROMISC, 1); /* Turn ON promisc. */ 2894 rc = key_write(keysock, samsg, sizeof (*samsg)); 2895 if (rc == -1) 2896 Bail("write (SADB_X_PROMISC)"); 2897 } else { 2898 (void) printf(gettext("Passively")); 2899 } 2900 (void) printf(gettext(" monitoring the PF_KEY socket.\n")); 2901 2902 for (; ; ) { 2903 /* 2904 * I assume that read() is non-blocking, and will never 2905 * return 0. 2906 */ 2907 rc = read(keysock, samsg, sizeof (get_buffer)); 2908 if (rc == -1) 2909 Bail("read (in domonitor)"); 2910 (void) printf(gettext("Read %d bytes.\n"), rc); 2911 /* 2912 * Q: Should I use the same method of printing as GET does? 2913 * A: For now, yes. 2914 */ 2915 print_samsg(stdout, get_buffer, B_TRUE, vflag, nflag); 2916 (void) putchar('\n'); 2917 } 2918 } 2919 2920 /* 2921 * Either mask or unmask all relevant signals. 2922 */ 2923 static void 2924 mask_signals(boolean_t unmask) 2925 { 2926 sigset_t set; 2927 static sigset_t oset; 2928 2929 if (unmask) { 2930 (void) sigprocmask(SIG_SETMASK, &oset, NULL); 2931 } else { 2932 (void) sigfillset(&set); 2933 (void) sigprocmask(SIG_SETMASK, &set, &oset); 2934 } 2935 } 2936 2937 /* 2938 * Assorted functions to print help text. 2939 */ 2940 #define puts_tr(s) (void) puts(gettext(s)) 2941 2942 static void 2943 doattrhelp() 2944 { 2945 int i; 2946 2947 puts_tr("\nSA attributes:"); 2948 2949 for (i = 0; tokens[i].string != NULL; i++) { 2950 if (i%3 == 0) 2951 (void) printf("\n"); 2952 (void) printf(" %-15.15s", tokens[i].string); 2953 } 2954 (void) printf("\n"); 2955 } 2956 2957 static void 2958 dohelpcmd(char *cmds) 2959 { 2960 int cmd; 2961 2962 if (strcmp(cmds, "attr") == 0) { 2963 doattrhelp(); 2964 return; 2965 } 2966 2967 cmd = parsecmd(cmds); 2968 switch (cmd) { 2969 case CMD_UPDATE: 2970 puts_tr("update - Update an existing SA"); 2971 break; 2972 case CMD_ADD: 2973 puts_tr("add - Add a new security association (SA)"); 2974 break; 2975 case CMD_DELETE: 2976 puts_tr("delete - Delete an SA"); 2977 break; 2978 case CMD_GET: 2979 puts_tr("get - Display an SA"); 2980 break; 2981 case CMD_FLUSH: 2982 puts_tr("flush - Delete all SAs"); 2983 break; 2984 case CMD_DUMP: 2985 puts_tr("dump - Display all SAs"); 2986 break; 2987 case CMD_MONITOR: 2988 puts_tr("monitor - Monitor all PF_KEY reply messages."); 2989 break; 2990 case CMD_PMONITOR: 2991 puts_tr( 2992 "pmonitor, passive_monitor - Monitor PF_KEY messages that"); 2993 puts_tr( 2994 " reply to all PF_KEY sockets."); 2995 break; 2996 2997 case CMD_QUIT: 2998 puts_tr("quit, exit - Exit the program"); 2999 break; 3000 case CMD_SAVE: 3001 puts_tr("save - Saves all SAs to a file"); 3002 break; 3003 case CMD_HELP: 3004 puts_tr("help - Display list of commands"); 3005 puts_tr("help <cmd> - Display help for command"); 3006 puts_tr("help attr - Display possible SA attributes"); 3007 break; 3008 default: 3009 (void) printf(gettext("%s: Unknown command\n"), cmds); 3010 break; 3011 } 3012 } 3013 3014 3015 static void 3016 dohelp(char *cmds) 3017 { 3018 if (cmds != NULL) { 3019 dohelpcmd(cmds); 3020 return; 3021 } 3022 puts_tr("Commands"); 3023 puts_tr("--------"); 3024 puts_tr("?, help - Display this list"); 3025 puts_tr("help <cmd> - Display help for command"); 3026 puts_tr("help attr - Display possible SA attributes"); 3027 puts_tr("quit, exit - Exit the program"); 3028 puts_tr("monitor - Monitor all PF_KEY reply messages."); 3029 puts_tr("pmonitor, passive_monitor - Monitor PF_KEY messages that"); 3030 puts_tr(" reply to all PF_KEY sockets."); 3031 puts_tr(""); 3032 puts_tr("The following commands are of the form:"); 3033 puts_tr(" <command> {SA type} {attribute value}*"); 3034 puts_tr(""); 3035 puts_tr("add (interactive only) - Add a new security association (SA)"); 3036 puts_tr("update (interactive only) - Update an existing SA"); 3037 puts_tr("delete - Delete an SA"); 3038 puts_tr("get - Display an SA"); 3039 puts_tr("flush - Delete all SAs"); 3040 puts_tr("dump - Display all SAs"); 3041 puts_tr("save - Saves all SAs to a file"); 3042 } 3043 3044 /* 3045 * "Parse" a command line from argv. 3046 */ 3047 static void 3048 parseit(int argc, char *argv[], char *ebuf, boolean_t read_cmdfile) 3049 { 3050 int cmd, satype; 3051 char *ep = NULL; 3052 3053 if (argc == 0) 3054 return; 3055 cmd = parsecmd(*argv++); 3056 3057 /* 3058 * Some commands loop forever and should only be run from the command 3059 * line, they should never be run from a command file as this may 3060 * be used at boot time. 3061 */ 3062 switch (cmd) { 3063 case CMD_HELP: 3064 if (read_cmdfile) 3065 ERROR(ep, ebuf, gettext("Help not appropriate in " 3066 "config file.")); 3067 else 3068 dohelp(*argv); 3069 return; 3070 case CMD_MONITOR: 3071 if (read_cmdfile) 3072 ERROR(ep, ebuf, gettext("Monitor not appropriate in " 3073 "config file.")); 3074 else 3075 domonitor(B_FALSE); 3076 break; 3077 case CMD_PMONITOR: 3078 if (read_cmdfile) 3079 ERROR(ep, ebuf, gettext("Monitor not appropriate in " 3080 "config file.")); 3081 else 3082 domonitor(B_TRUE); 3083 break; 3084 case CMD_QUIT: 3085 EXIT_OK(NULL); 3086 } 3087 3088 handle_errors(ep, ebuf, B_FALSE, B_FALSE); 3089 3090 satype = parsesatype(*argv, ebuf); 3091 3092 if (satype != SADB_SATYPE_UNSPEC) { 3093 argv++; 3094 } else { 3095 /* 3096 * You must specify either "all" or a specific SA type 3097 * for the "save" command. 3098 */ 3099 if (cmd == CMD_SAVE) 3100 if (*argv == NULL) { 3101 FATAL(ep, ebuf, gettext( 3102 "Must specify a specific " 3103 "SA type for save.\n")); 3104 } else { 3105 argv++; 3106 } 3107 } 3108 3109 switch (cmd) { 3110 case CMD_FLUSH: 3111 if (!cflag) 3112 doflush(satype); 3113 /* 3114 * If this was called because of an entry in a cmd file 3115 * then this action needs to be counted to prevent 3116 * do_interactive() treating this as an error. 3117 */ 3118 lines_added++; 3119 break; 3120 case CMD_ADD: 3121 case CMD_UPDATE: 3122 /* 3123 * NOTE: Shouldn't allow ADDs or UPDATEs with keying material 3124 * from the command line. 3125 */ 3126 if (!interactive) { 3127 errx(1, gettext( 3128 "can't do ADD or UPDATE from the command line.\n")); 3129 } 3130 if (satype == SADB_SATYPE_UNSPEC) { 3131 FATAL(ep, ebuf, gettext( 3132 "Must specify a specific SA type.")); 3133 /* NOTREACHED */ 3134 } 3135 /* Parse for extensions, including keying material. */ 3136 doaddup(cmd, satype, argv, ebuf); 3137 break; 3138 case CMD_DELETE: 3139 case CMD_GET: 3140 if (satype == SADB_SATYPE_UNSPEC) { 3141 FATAL(ep, ebuf, gettext( 3142 "Must specify a single SA type.")); 3143 /* NOTREACHED */ 3144 } 3145 /* Parse for bare minimum to locate an SA. */ 3146 dodelget(cmd, satype, argv, ebuf); 3147 break; 3148 case CMD_DUMP: 3149 if (read_cmdfile) 3150 ERROR(ep, ebuf, gettext("Dump not appropriate in " 3151 "config file.")); 3152 else 3153 dodump(satype, NULL); 3154 break; 3155 case CMD_SAVE: 3156 if (read_cmdfile) { 3157 ERROR(ep, ebuf, gettext("Save not appropriate in " 3158 "config file.")); 3159 } else { 3160 mask_signals(B_FALSE); /* Mask signals */ 3161 dodump(satype, opensavefile(argv[0])); 3162 mask_signals(B_TRUE); /* Unmask signals */ 3163 } 3164 break; 3165 default: 3166 warnx(gettext("Unknown command (%s).\n"), 3167 *(argv - ((satype == SADB_SATYPE_UNSPEC) ? 1 : 2))); 3168 usage(); 3169 } 3170 handle_errors(ep, ebuf, B_FALSE, B_FALSE); 3171 } 3172 3173 int 3174 main(int argc, char *argv[]) 3175 { 3176 int ch; 3177 FILE *infile = stdin, *savefile; 3178 boolean_t dosave = B_FALSE, readfile = B_FALSE; 3179 char *configfile = NULL; 3180 3181 (void) setlocale(LC_ALL, ""); 3182 #if !defined(TEXT_DOMAIN) 3183 #define TEXT_DOMAIN "SYS_TEST" 3184 #endif 3185 (void) textdomain(TEXT_DOMAIN); 3186 3187 /* 3188 * Check to see if the command is being run from smf(5). 3189 */ 3190 my_fmri = getenv("SMF_FMRI"); 3191 3192 openlog("ipseckey", LOG_CONS, LOG_AUTH); 3193 if (getuid() != 0) { 3194 errx(1, "Insufficient privileges to run ipseckey."); 3195 } 3196 3197 /* umask me to paranoid, I only want to create files read-only */ 3198 (void) umask((mode_t)00377); 3199 3200 while ((ch = getopt(argc, argv, "pnvf:s:c:")) != EOF) 3201 switch (ch) { 3202 case 'p': 3203 pflag = B_TRUE; 3204 break; 3205 case 'n': 3206 nflag = B_TRUE; 3207 break; 3208 case 'v': 3209 vflag = B_TRUE; 3210 break; 3211 case 'c': 3212 cflag = B_TRUE; 3213 /* FALLTHRU */ 3214 case 'f': 3215 if (dosave) 3216 usage(); 3217 infile = fopen(optarg, "r"); 3218 if (infile == NULL) { 3219 EXIT_BADCONFIG2("Unable to open configuration " 3220 "file: %s\n", optarg); 3221 } 3222 configfile = strdup(optarg); 3223 readfile = B_TRUE; 3224 break; 3225 case 's': 3226 if (readfile) 3227 usage(); 3228 dosave = B_TRUE; 3229 savefile = opensavefile(optarg); 3230 break; 3231 default: 3232 usage(); 3233 } 3234 3235 argc -= optind; 3236 argv += optind; 3237 3238 mypid = getpid(); 3239 3240 keysock = socket(PF_KEY, SOCK_RAW, PF_KEY_V2); 3241 3242 if (keysock == -1) { 3243 if (errno == EPERM) { 3244 EXIT_BADPERM("Insufficient privileges to open " 3245 "PF_KEY socket.\n"); 3246 } else { 3247 /* some other reason */ 3248 EXIT_FATAL("Opening PF_KEY socket"); 3249 } 3250 } 3251 3252 if (dosave) { 3253 mask_signals(B_FALSE); /* Mask signals */ 3254 dodump(SADB_SATYPE_UNSPEC, savefile); 3255 mask_signals(B_TRUE); /* Unmask signals */ 3256 EXIT_OK(NULL); 3257 } 3258 3259 /* 3260 * When run from smf(5) flush any existing SA's first 3261 * otherwise you will end up in maintenance mode. 3262 */ 3263 if ((my_fmri != NULL) && readfile) { 3264 (void) fprintf(stdout, gettext( 3265 "Flushing existing SA's before adding new SA's\n")); 3266 (void) fflush(stdout); 3267 doflush(SADB_SATYPE_UNSPEC); 3268 } 3269 if (infile != stdin || *argv == NULL) { 3270 /* Go into interactive mode here. */ 3271 do_interactive(infile, configfile, "ipseckey> ", my_fmri, 3272 parseit); 3273 } 3274 parseit(argc, argv, NULL, B_FALSE); 3275 3276 return (0); 3277 } 3278