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(msg, B_FALSE, vflag); 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(get_buffer, B_FALSE, vflag); 1008 (void) putchar('\n'); 1009 } else { 1010 save_assoc(get_buffer, ofile); 1011 } 1012 } 1013 } while (msg->sadb_msg_pid != mypid || 1014 (msg->sadb_msg_errno == 0 && msg->sadb_msg_seq != 0)); 1015 1016 if (ofile != NULL && ofile != stdout) 1017 (void) fclose(ofile); 1018 1019 if (msg->sadb_msg_errno == 0) { 1020 if (ofile == NULL) 1021 (void) printf( 1022 gettext("Dump succeeded for SA type %d.\n"), 1023 satype); 1024 } else { 1025 print_diagnostic(stderr, msg->sadb_x_msg_diagnostic); 1026 errno = msg->sadb_msg_errno; 1027 Bail("Dump failed"); 1028 } 1029 } 1030 1031 #define SCOPE_UNSPEC 0 1032 #define SCOPE_LINKLOCAL 1 1033 #define SCOPE_SITELOCAL 2 1034 #define SCOPE_GLOBAL 3 1035 #define SCOPE_V4COMPAT 4 1036 #define SCOPE_LOOPBACK 5 /* Pedantic, yes, but necessary. */ 1037 1038 static int 1039 ipv6_addr_scope(struct in6_addr *addr) 1040 { 1041 /* Don't return anything regarding multicast for now... */ 1042 1043 if (IN6_IS_ADDR_UNSPECIFIED(addr)) 1044 return (SCOPE_UNSPEC); 1045 1046 if (IN6_IS_ADDR_LINKLOCAL(addr)) 1047 return (SCOPE_LINKLOCAL); 1048 1049 if (IN6_IS_ADDR_SITELOCAL(addr)) 1050 return (SCOPE_SITELOCAL); 1051 1052 if (IN6_IS_ADDR_V4COMPAT(addr)) 1053 return (SCOPE_V4COMPAT); 1054 1055 if (IN6_IS_ADDR_LOOPBACK(addr)) 1056 return (SCOPE_LOOPBACK); 1057 1058 /* For now, return global by default. */ 1059 return (SCOPE_GLOBAL); 1060 } 1061 1062 /* 1063 * doaddresses(): 1064 * 1065 * Used by doaddup() and dodelget() to create new SA's based on the 1066 * provided source and destination addresses hostent. 1067 * 1068 * sadb_msg_type: expected PF_KEY reply message type 1069 * sadb_msg_satype: expected PF_KEY reply satype 1070 * cmd: user command 1071 * srchp: hostent for the source address(es) 1072 * dsthp: hostent for the destination address(es) 1073 * src: points to the SADB source address extension 1074 * dst: points to the SADB destination address extension 1075 * unspec_src: indicates an unspecified source address. 1076 * buffer: pointer to the SADB buffer to use with PF_KEY 1077 * buffer_size: size of buffer 1078 * spi: spi for this message (set by caller) 1079 * srcport: source port if specified 1080 * dstport: destination port if specified 1081 * proto: IP protocol number if specified 1082 * iproto: Inner (tunnel mode) IP protocol number if specified 1083 * NATT note: we are going to assume a semi-sane world where NAT 1084 * boxen don't explode to multiple addresses. 1085 */ 1086 static void 1087 doaddresses(uint8_t sadb_msg_type, uint8_t sadb_msg_satype, int cmd, 1088 struct hostent *srchp, struct hostent *dsthp, 1089 struct sadb_address *src, struct sadb_address *dst, 1090 boolean_t unspec_src, uint64_t *buffer, int buffer_size, uint32_t spi, 1091 char *ebuf) 1092 { 1093 boolean_t single_dst; 1094 struct sockaddr_in6 *sin6; 1095 struct sadb_msg *msgp; 1096 int i, rc; 1097 char **walker; /* For the SRC and PROXY walking functions. */ 1098 char *first_match; 1099 uint64_t savebuf[MAX_GET_SIZE]; 1100 uint16_t srcport = 0, dstport = 0; 1101 char *ep = NULL; 1102 1103 /* 1104 * Okay, now we have "src", "dst", and maybe "proxy" reassigned 1105 * to point into the buffer to be written to PF_KEY, we can do 1106 * potentially several writes based on destination address. 1107 * 1108 * First, obtain port numbers from passed-in extensions. 1109 */ 1110 1111 if (src != NULL) { 1112 sin6 = (struct sockaddr_in6 *)(src + 1); 1113 srcport = ntohs(sin6->sin6_port); 1114 } 1115 if (dst != NULL) { 1116 sin6 = (struct sockaddr_in6 *)(dst + 1); 1117 dstport = ntohs(sin6->sin6_port); 1118 } 1119 1120 /* 1121 * The rules for ADD, GET, and UPDATE: (NOTE: This assumes IPsec. 1122 * If other consumers of PF_KEY happen, this will have to be 1123 * rewhacked.): 1124 * 1125 * Do a message for every possible DST address. 1126 * 1127 * If a source or proxy address explodes, keep unspecified 1128 * (and mention unspecified). 1129 * 1130 * If dsthp is == dummy.he, then go through the loop once. 1131 * If any other hp is == dummy.he, then you don't have to apply any 1132 * silly rules. 1133 * 1134 * DELETE is different, because you can leave either "src" or "dst" 1135 * blank! You need to explode if one of them is full, and not assume 1136 * that the other is set. 1137 */ 1138 1139 if (dsthp == NULL) { 1140 /* 1141 * No destination address specified. 1142 * With extended diagnostics, we don't have to bail the 1143 * non-DELETE cases here. The EINVAL diagnostics will be 1144 * enough to inform the user(s) what happened. 1145 */ 1146 i = 0; 1147 do { 1148 if (srchp == &dummy.he) { 1149 /* Just to be sure... */ 1150 srchp->h_addr_list[1] = NULL; 1151 } else if (srchp != NULL) { 1152 /* Degenerate case, h_addr_list[0] == NULL. */ 1153 if (srchp->h_addr_list[i] == NULL) 1154 Bail("Empty source address list"); 1155 1156 /* 1157 * Fill in the src sockaddr. 1158 */ 1159 sin6 = (struct sockaddr_in6 *)(src + 1); 1160 bzero(sin6, sizeof (*sin6)); 1161 bcopy(srchp->h_addr_list[i], &sin6->sin6_addr, 1162 sizeof (struct in6_addr)); 1163 sin6->sin6_family = AF_INET6; 1164 sin6->sin6_port = htons(srcport); 1165 } 1166 1167 /* Save off a copy for later writing... */ 1168 msgp = (struct sadb_msg *)buffer; 1169 bcopy(buffer, savebuf, SADB_64TO8(msgp->sadb_msg_len)); 1170 1171 rc = key_write(keysock, buffer, 1172 SADB_64TO8(msgp->sadb_msg_len)); 1173 if (rc == -1) 1174 Bail("write() to PF_KEY socket " 1175 "(in doaddresses)"); 1176 1177 time_critical_enter(); 1178 do { 1179 rc = read(keysock, buffer, buffer_size); 1180 if (rc == -1) 1181 Bail("read (in doaddresses)"); 1182 } while (msgp->sadb_msg_seq != seq || 1183 msgp->sadb_msg_pid != mypid); 1184 time_critical_exit(); 1185 1186 if (msgp->sadb_msg_type != sadb_msg_type || 1187 msgp->sadb_msg_satype != sadb_msg_satype) { 1188 syslog((LOG_NOTICE|LOG_AUTH), gettext( 1189 "doaddresses: Unexpected returned message " 1190 "(%d exp %d)\n"), msgp->sadb_msg_type, 1191 sadb_msg_type); 1192 Bail("doaddresses: Unexpected returned " 1193 "message"); 1194 } 1195 1196 errno = msgp->sadb_msg_errno; 1197 if (errno != 0) { 1198 if (errno == EINVAL) { 1199 WARN(ep, ebuf, gettext( 1200 "One of the entered " 1201 "values is incorrect.")); 1202 print_diagnostic(stderr, 1203 msgp->sadb_x_msg_diagnostic); 1204 } else { 1205 Bail("return message (in doaddresses)"); 1206 } 1207 } 1208 1209 /* ...and then restore the saved buffer. */ 1210 msgp = (struct sadb_msg *)savebuf; 1211 bcopy(savebuf, buffer, SADB_64TO8(msgp->sadb_msg_len)); 1212 } while (srchp != NULL && srchp->h_addr_list[++i] != NULL); 1213 return; 1214 } 1215 1216 single_dst = (dsthp == &dummy.he || dsthp->h_addr_list[1] == NULL); 1217 1218 for (i = 0; dsthp->h_addr_list[i] != NULL; i++) { 1219 if (dsthp == &dummy.he) { 1220 /* Just to be sure... */ 1221 dsthp->h_addr_list[1] = NULL; 1222 } else { 1223 /* 1224 * Fill in the dst sockaddr. 1225 */ 1226 sin6 = (struct sockaddr_in6 *)(dst + 1); 1227 bzero(sin6, sizeof (*sin6)); 1228 bcopy(dsthp->h_addr_list[i], &sin6->sin6_addr, 1229 sizeof (struct in6_addr)); 1230 sin6->sin6_family = AF_INET6; 1231 sin6->sin6_port = htons(dstport); 1232 } 1233 1234 /* 1235 * Try and assign src, if there's any ambiguity. 1236 */ 1237 if (!unspec_src && srchp != &dummy.he) { 1238 if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) { 1239 /* 1240 * IPv4 address. Find an IPv4 address, then 1241 * keep looking for a second one. If a second 1242 * exists, print a message, and fill in the 1243 * unspecified address. 1244 */ 1245 first_match = NULL; 1246 1247 for (walker = srchp->h_addr_list; 1248 *walker != NULL; walker++) { 1249 /* LINTED E_BAD_PTR_CAST_ALIGN */ 1250 if (IN6_IS_ADDR_V4MAPPED( 1251 (struct in6_addr *)*walker)) { 1252 if (first_match != NULL) 1253 break; 1254 else 1255 first_match = *walker; 1256 } 1257 } 1258 sin6 = (struct sockaddr_in6 *)(src + 1); 1259 bzero(sin6, sizeof (*sin6)); 1260 1261 if (first_match == NULL) { 1262 /* 1263 * No IPv4 hits. Is this a single 1264 * dest? 1265 */ 1266 WARN1(ep, ebuf, gettext( 1267 "No IPv4 source address " 1268 "for name %s.\n"), srchp->h_name); 1269 if (single_dst) { 1270 ERROR(ep, ebuf, gettext( 1271 "Only single destination " 1272 "IP address.\n")); 1273 } else { 1274 /* Continue, but do I print? */ 1275 continue; /* for loop */ 1276 } 1277 1278 /* I should never reach here. */ 1279 } 1280 1281 sin6->sin6_family = AF_INET6; 1282 sin6->sin6_port = htons(srcport); 1283 if (*walker != NULL) { 1284 /* 1285 * Early loop exit. It must've been 1286 * multiple hits... 1287 * 1288 * Issue a null-source warning? 1289 */ 1290 WARN1(ep, ebuf, gettext( 1291 "Multiple IPv4 source addresses " 1292 "for %s, using unspecified source " 1293 "instead."), srchp->h_name); 1294 } else { 1295 /* 1296 * If I reach here w/o hitting the 1297 * previous if statements, I have a 1298 * single source address for this 1299 * destination. 1300 */ 1301 bcopy(first_match, &sin6->sin6_addr, 1302 sizeof (struct in6_addr)); 1303 } 1304 } else { 1305 /* 1306 * IPv6 address. Find an IPv6 address. 1307 * Unlike IPv4 addresses, things can get a 1308 * little more sticky with scopes, etc. 1309 */ 1310 int dst_scope, src_scope; 1311 1312 dst_scope = ipv6_addr_scope(&sin6->sin6_addr); 1313 1314 first_match = NULL; 1315 for (walker = srchp->h_addr_list; 1316 *walker != NULL; walker++) { 1317 /* LINTED E_BAD_PTR_CAST_ALIGN */ 1318 if (!IN6_IS_ADDR_V4MAPPED( 1319 (struct in6_addr *)*walker)) { 1320 /* 1321 * Set first-match, etc. 1322 * Take into account scopes, 1323 * and other IPv6 thingies. 1324 */ 1325 src_scope = ipv6_addr_scope( 1326 /* LINTED E_BAD_PTR_CAST */ 1327 (struct in6_addr *)*walker); 1328 if (src_scope == SCOPE_UNSPEC || 1329 src_scope == dst_scope) { 1330 if (first_match != 1331 NULL) 1332 break; 1333 else 1334 first_match = 1335 *walker; 1336 } 1337 } 1338 } 1339 1340 sin6 = (struct sockaddr_in6 *)(src + 1); 1341 bzero(sin6, sizeof (*sin6)); 1342 sin6->sin6_port = htons(srcport); 1343 if (first_match == NULL) { 1344 /* 1345 * No IPv6 hits. Is this a single 1346 * dest? 1347 */ 1348 WARN1(ep, ebuf, gettext( 1349 "No IPv6 source address of " 1350 "matching scope for name %s.\n"), 1351 srchp->h_name); 1352 if (single_dst) { 1353 ERROR(ep, ebuf, gettext( 1354 "Only a single IPV6 " 1355 "destination " 1356 "address.\n")); 1357 } else { 1358 /* Continue, but do I print? */ 1359 continue; /* for loop */ 1360 } 1361 1362 /* I should never reach here. */ 1363 } 1364 sin6->sin6_family = AF_INET6; 1365 if (*walker != NULL) { 1366 /* 1367 * Early loop exit. Issue a 1368 * null-source warning? 1369 */ 1370 WARN1(ep, ebuf, gettext( 1371 "Multiple IPv6 source addresses " 1372 "for %s of the same scope, using " 1373 "unspecified source instead.\n"), 1374 srchp->h_name); 1375 } else { 1376 /* 1377 * If I reach here w/o hitting the 1378 * previous if statements, I have a 1379 * single source address for this 1380 * destination. 1381 */ 1382 bcopy(first_match, &sin6->sin6_addr, 1383 sizeof (struct in6_addr)); 1384 } 1385 } 1386 } 1387 1388 /* 1389 * If there are errors at this point there is no 1390 * point sending anything to PF_KEY. 1391 */ 1392 handle_errors(ep, ebuf, B_TRUE, B_FALSE); 1393 1394 /* Save off a copy for later writing... */ 1395 msgp = (struct sadb_msg *)buffer; 1396 bcopy(buffer, savebuf, SADB_64TO8(msgp->sadb_msg_len)); 1397 1398 rc = key_write(keysock, buffer, SADB_64TO8(msgp->sadb_msg_len)); 1399 if (rc == -1) 1400 Bail("write() to PF_KEY socket (in doaddresses)"); 1401 1402 /* Blank the key for paranoia's sake. */ 1403 bzero(buffer, buffer_size); 1404 time_critical_enter(); 1405 do { 1406 rc = read(keysock, buffer, buffer_size); 1407 if (rc == -1) 1408 Bail("read (in doaddresses)"); 1409 } while (msgp->sadb_msg_seq != seq || 1410 msgp->sadb_msg_pid != mypid); 1411 time_critical_exit(); 1412 1413 /* 1414 * I should _never_ hit the following unless: 1415 * 1416 * 1. There is a kernel bug. 1417 * 2. Another process is mistakenly using my pid in a PF_KEY 1418 * message. 1419 */ 1420 if (msgp->sadb_msg_type != sadb_msg_type || 1421 msgp->sadb_msg_satype != sadb_msg_satype) { 1422 syslog((LOG_NOTICE|LOG_AUTH), gettext( 1423 "doaddresses: Unexpected returned message " 1424 "(%d exp %d)\n"), msgp->sadb_msg_type, 1425 sadb_msg_type); 1426 Bail("doaddresses: Unexpected returned message"); 1427 } 1428 1429 if (msgp->sadb_msg_errno != 0) { 1430 char addrprint[INET6_ADDRSTRLEN]; 1431 int on_errno = 0; 1432 char *on_errno_msg; 1433 1434 /* 1435 * Print different error messages depending 1436 * on the SADB message type being processed. 1437 * If we get a ESRCH error for a GET/DELETE 1438 * messages, we report that the SA does not 1439 * exist. If we get a EEXIST error for a 1440 * ADD/UPDATE message, we report that the 1441 * SA already exists. 1442 */ 1443 if (sadb_msg_type == SADB_GET || 1444 sadb_msg_type == SADB_DELETE) { 1445 on_errno = ESRCH; 1446 on_errno_msg = "does not exist"; 1447 } else if (sadb_msg_type == SADB_ADD || 1448 sadb_msg_type == SADB_UPDATE) { 1449 on_errno = EEXIST; 1450 on_errno_msg = "already exists"; 1451 } 1452 1453 errno = msgp->sadb_msg_errno; 1454 if (errno == on_errno) { 1455 ERROR2(ep, ebuf, gettext( 1456 "Association (type = %s) " 1457 "with spi 0x%x and addr\n"), 1458 rparsesatype(msgp->sadb_msg_satype), 1459 ntohl(spi)); 1460 ERROR2(ep, ebuf, "%s %s.\n", 1461 do_inet_ntop(dsthp->h_addr_list[i], 1462 addrprint, sizeof (addrprint)), 1463 on_errno_msg); 1464 msgp = (struct sadb_msg *)savebuf; 1465 bcopy(savebuf, buffer, 1466 SADB_64TO8(msgp->sadb_msg_len)); 1467 continue; 1468 } else { 1469 if (errno == EINVAL) { 1470 ERROR2(ep, ebuf, gettext( 1471 "PF_KEY Diagnostic code %u: %s.\n"), 1472 msgp->sadb_x_msg_diagnostic, 1473 keysock_diag( 1474 msgp->sadb_x_msg_diagnostic)); 1475 } else { 1476 Bail("return message (in doaddresses)"); 1477 } 1478 } 1479 } 1480 1481 if (cmd == CMD_GET) { 1482 if (msgp->sadb_msg_len > MAX_GET_SIZE) { 1483 WARN1(ep, ebuf, gettext("WARNING: " 1484 "SA information bigger than %d bytes.\n"), 1485 SADB_64TO8(MAX_GET_SIZE)); 1486 } 1487 print_samsg(buffer, B_FALSE, vflag); 1488 } 1489 1490 handle_errors(ep, ebuf, B_TRUE, B_FALSE); 1491 1492 /* ...and then restore the saved buffer. */ 1493 msgp = (struct sadb_msg *)savebuf; 1494 bcopy(savebuf, buffer, SADB_64TO8(msgp->sadb_msg_len)); 1495 lines_added++; 1496 } 1497 1498 /* Degenerate case, h_addr_list[0] == NULL. */ 1499 if (i == 0) 1500 Bail("Empty destination address list"); 1501 1502 /* 1503 * free(ebuf) even if there are no errors. 1504 * handle_errors() won't return here. 1505 */ 1506 handle_errors(ep, ebuf, B_TRUE, B_TRUE); 1507 } 1508 1509 /* 1510 * Perform an add or an update. ADD and UPDATE are similar in the extensions 1511 * they need. 1512 */ 1513 static void 1514 doaddup(int cmd, int satype, char *argv[], char *ebuf) 1515 { 1516 uint64_t *buffer, *nexthdr; 1517 struct sadb_msg msg; 1518 struct sadb_sa *assoc = NULL; 1519 struct sadb_address *src = NULL, *dst = NULL; 1520 struct sadb_address *isrc = NULL, *idst = NULL; 1521 struct sadb_address *natt_local = NULL, *natt_remote = NULL; 1522 struct sadb_key *encrypt = NULL, *auth = NULL; 1523 struct sadb_ident *srcid = NULL, *dstid = NULL; 1524 struct sadb_lifetime *hard = NULL, *soft = NULL; /* Current? */ 1525 struct sockaddr_in6 *sin6; 1526 /* MLS TODO: Need sensitivity eventually. */ 1527 int next, token, sa_len, alloclen, totallen = sizeof (msg), prefix; 1528 uint32_t spi; 1529 char *thiscmd, *pstr; 1530 boolean_t readstate = B_FALSE, unspec_src = B_FALSE; 1531 boolean_t alloc_inner = B_FALSE, use_natt = B_FALSE; 1532 struct hostent *srchp = NULL, *dsthp = NULL, *isrchp = NULL, 1533 *idsthp = NULL; 1534 struct hostent *natt_lhp = NULL, *natt_rhp = NULL; 1535 uint16_t srcport = 0, dstport = 0, natt_lport = 0, natt_rport = 0, 1536 isrcport = 0, idstport = 0; 1537 uint8_t proto = 0, iproto = 0; 1538 char *ep = NULL; 1539 1540 thiscmd = (cmd == CMD_ADD) ? "add" : "update"; 1541 1542 msg_init(&msg, ((cmd == CMD_ADD) ? SADB_ADD : SADB_UPDATE), 1543 (uint8_t)satype); 1544 1545 /* Assume last element in argv is set to NULL. */ 1546 do { 1547 token = parseextval(*argv, &next); 1548 argv++; 1549 switch (token) { 1550 case TOK_EOF: 1551 /* Do nothing, I'm done. */ 1552 break; 1553 case TOK_UNKNOWN: 1554 ERROR1(ep, ebuf, gettext( 1555 "Unknown extension field \"%s\" \n"), *(argv - 1)); 1556 break; 1557 case TOK_SPI: 1558 case TOK_REPLAY: 1559 case TOK_STATE: 1560 case TOK_AUTHALG: 1561 case TOK_ENCRALG: 1562 case TOK_ENCAP: 1563 /* 1564 * May want to place this chunk of code in a function. 1565 * 1566 * This code checks for duplicate entries on a command 1567 * line. 1568 */ 1569 1570 /* Allocate the SADB_EXT_SA extension. */ 1571 if (assoc == NULL) { 1572 assoc = malloc(sizeof (*assoc)); 1573 if (assoc == NULL) 1574 Bail("malloc(assoc)"); 1575 bzero(assoc, sizeof (*assoc)); 1576 assoc->sadb_sa_exttype = SADB_EXT_SA; 1577 assoc->sadb_sa_len = 1578 SADB_8TO64(sizeof (*assoc)); 1579 totallen += sizeof (*assoc); 1580 } 1581 switch (token) { 1582 case TOK_SPI: 1583 /* 1584 * If some cretin types in "spi 0" then he/she 1585 * can type in another SPI. 1586 */ 1587 if (assoc->sadb_sa_spi != 0) { 1588 ERROR(ep, ebuf, gettext( 1589 "Can only specify " 1590 "single SPI value.\n")); 1591 break; 1592 } 1593 /* Must convert SPI to network order! */ 1594 assoc->sadb_sa_spi = 1595 htonl((uint32_t)parsenum(*argv, B_TRUE, 1596 ebuf)); 1597 if (assoc->sadb_sa_spi == 0) { 1598 ERROR(ep, ebuf, gettext( 1599 "Invalid SPI value \"0\" .\n")); 1600 } 1601 break; 1602 case TOK_REPLAY: 1603 /* 1604 * That same cretin can do the same with 1605 * replay. 1606 */ 1607 if (assoc->sadb_sa_replay != 0) { 1608 ERROR(ep, ebuf, gettext( 1609 "Can only specify " 1610 "single replay window size.\n")); 1611 break; 1612 } 1613 assoc->sadb_sa_replay = 1614 (uint8_t)parsenum(*argv, B_TRUE, ebuf); 1615 if (assoc->sadb_sa_replay != 0) { 1616 WARN(ep, ebuf, gettext( 1617 "WARNING: Replay with manual" 1618 " keying considered harmful.\n")); 1619 } 1620 break; 1621 case TOK_STATE: 1622 /* 1623 * 0 is an actual state value, LARVAL. This 1624 * means that one can type in the larval state 1625 * and then type in another state on the same 1626 * command line. 1627 */ 1628 if (assoc->sadb_sa_state != 0) { 1629 ERROR(ep, ebuf, gettext( 1630 "Can only specify " 1631 "single SA state.\n")); 1632 break; 1633 } 1634 assoc->sadb_sa_state = parsestate(*argv, 1635 ebuf); 1636 readstate = B_TRUE; 1637 break; 1638 case TOK_AUTHALG: 1639 if (assoc->sadb_sa_auth != 0) { 1640 ERROR(ep, ebuf, gettext( 1641 "Can only specify " 1642 "single auth algorithm.\n")); 1643 break; 1644 } 1645 assoc->sadb_sa_auth = parsealg(*argv, 1646 IPSEC_PROTO_AH, ebuf); 1647 break; 1648 case TOK_ENCRALG: 1649 if (satype == SADB_SATYPE_AH) { 1650 ERROR(ep, ebuf, gettext("Cannot specify" 1651 " encryption with SA type ah.\n")); 1652 break; 1653 } 1654 if (assoc->sadb_sa_encrypt != 0) { 1655 ERROR(ep, ebuf, gettext( 1656 "Can only specify " 1657 "single encryption algorithm.\n")); 1658 break; 1659 } 1660 assoc->sadb_sa_encrypt = parsealg(*argv, 1661 IPSEC_PROTO_ESP, ebuf); 1662 break; 1663 case TOK_ENCAP: 1664 if (use_natt) { 1665 ERROR(ep, ebuf, gettext( 1666 "Can only specify single" 1667 " encapsulation.\n")); 1668 break; 1669 } 1670 if (strncmp(*argv, "udp", 3)) { 1671 ERROR(ep, ebuf, gettext( 1672 "Can only specify udp" 1673 " encapsulation.\n")); 1674 break; 1675 } 1676 use_natt = B_TRUE; 1677 /* set assoc flags later */ 1678 break; 1679 } 1680 argv++; 1681 break; 1682 case TOK_SRCPORT: 1683 if (srcport != 0) { 1684 ERROR(ep, ebuf, gettext("Can only specify " 1685 "single source port.\n")); 1686 break; 1687 } 1688 srcport = parsenum(*argv, B_TRUE, ebuf); 1689 argv++; 1690 break; 1691 case TOK_DSTPORT: 1692 if (dstport != 0) { 1693 ERROR(ep, ebuf, gettext("Can only specify " 1694 "single destination port.\n")); 1695 break; 1696 } 1697 dstport = parsenum(*argv, B_TRUE, ebuf); 1698 argv++; 1699 break; 1700 case TOK_ISRCPORT: 1701 alloc_inner = B_TRUE; 1702 if (isrcport != 0) { 1703 ERROR(ep, ebuf, gettext( 1704 "Can only specify " 1705 "single inner-source port.\n")); 1706 break; 1707 } 1708 isrcport = parsenum(*argv, B_TRUE, ebuf); 1709 argv++; 1710 break; 1711 case TOK_IDSTPORT: 1712 alloc_inner = B_TRUE; 1713 if (idstport != 0) { 1714 ERROR(ep, ebuf, gettext( 1715 "Can only specify " 1716 "single inner-destination port.\n")); 1717 break; 1718 } 1719 idstport = parsenum(*argv, B_TRUE, ebuf); 1720 argv++; 1721 break; 1722 case TOK_NATLPORT: 1723 if (natt_lport != 0) { 1724 ERROR(ep, ebuf, gettext( 1725 "Can only specify " 1726 "single NAT-T local port.\n")); 1727 break; 1728 } 1729 1730 if (natt_rport != 0) { 1731 ERROR(ep, ebuf, gettext( 1732 "Can only specify " 1733 "one of NAT-T remote and local port.\n")); 1734 break; 1735 } 1736 natt_lport = parsenum(*argv, B_TRUE, ebuf); 1737 argv++; 1738 break; 1739 case TOK_NATRPORT: 1740 if (natt_rport != 0) { 1741 ERROR(ep, ebuf, gettext( 1742 "Can only specify " 1743 "single NAT-T remote port.\n")); 1744 break; 1745 } 1746 1747 if (natt_lport != 0) { 1748 ERROR(ep, ebuf, gettext( 1749 "Can only specify " 1750 "one of NAT-T remote and local port.\n")); 1751 break; 1752 } 1753 natt_rport = parsenum(*argv, B_TRUE, ebuf); 1754 argv++; 1755 break; 1756 1757 case TOK_PROTO: 1758 if (proto != 0) { 1759 ERROR(ep, ebuf, gettext( 1760 "Can only specify " 1761 "single protocol.\n")); 1762 break; 1763 } 1764 proto = parsenum(*argv, B_TRUE, ebuf); 1765 argv++; 1766 break; 1767 case TOK_IPROTO: 1768 alloc_inner = B_TRUE; 1769 if (iproto != 0) { 1770 ERROR(ep, ebuf, gettext( 1771 "Can only specify " 1772 "single inner protocol.\n")); 1773 break; 1774 } 1775 iproto = parsenum(*argv, B_TRUE, ebuf); 1776 argv++; 1777 break; 1778 case TOK_SRCADDR: 1779 case TOK_SRCADDR6: 1780 if (src != NULL) { 1781 ERROR(ep, ebuf, gettext( 1782 "Can only specify " 1783 "single source address.\n")); 1784 break; 1785 } 1786 sa_len = parseaddr(*argv, &srchp, 1787 (token == TOK_SRCADDR6), ebuf); 1788 if (srchp == NULL) { 1789 ERROR1(ep, ebuf, gettext( 1790 "Unknown src address \"%s\"\n"), *argv); 1791 break; 1792 } 1793 argv++; 1794 /* 1795 * Round of the sockaddr length to an 8 byte 1796 * boundary to make PF_KEY happy. 1797 */ 1798 alloclen = sizeof (*src) + roundup(sa_len, 8); 1799 src = malloc(alloclen); 1800 if (src == NULL) 1801 Bail("malloc(src)"); 1802 totallen += alloclen; 1803 src->sadb_address_len = SADB_8TO64(alloclen); 1804 src->sadb_address_exttype = SADB_EXT_ADDRESS_SRC; 1805 src->sadb_address_reserved = 0; 1806 src->sadb_address_prefixlen = 0; 1807 src->sadb_address_proto = 0; 1808 if (srchp == &dummy.he) { 1809 /* 1810 * Single address with -n flag. 1811 */ 1812 sin6 = (struct sockaddr_in6 *)(src + 1); 1813 bzero(sin6, sizeof (*sin6)); 1814 sin6->sin6_family = AF_INET6; 1815 bcopy(srchp->h_addr_list[0], &sin6->sin6_addr, 1816 sizeof (struct in6_addr)); 1817 } 1818 break; 1819 case TOK_DSTADDR: 1820 case TOK_DSTADDR6: 1821 if (dst != NULL) { 1822 ERROR(ep, ebuf, gettext( 1823 "Can only specify single " 1824 "destination address.\n")); 1825 break; 1826 } 1827 sa_len = parseaddr(*argv, &dsthp, 1828 (token == TOK_DSTADDR6), ebuf); 1829 if (dsthp == NULL) { 1830 ERROR1(ep, ebuf, gettext( 1831 "Unknown dst address \"%s\"\n"), *argv); 1832 break; 1833 } 1834 argv++; 1835 alloclen = sizeof (*dst) + roundup(sa_len, 8); 1836 dst = malloc(alloclen); 1837 if (dst == NULL) 1838 Bail("malloc(dst)"); 1839 totallen += alloclen; 1840 dst->sadb_address_len = SADB_8TO64(alloclen); 1841 dst->sadb_address_exttype = SADB_EXT_ADDRESS_DST; 1842 dst->sadb_address_reserved = 0; 1843 dst->sadb_address_prefixlen = 0; 1844 dst->sadb_address_proto = 0; 1845 if (dsthp == &dummy.he) { 1846 /* 1847 * Single address with -n flag. 1848 */ 1849 sin6 = (struct sockaddr_in6 *)(dst + 1); 1850 bzero(sin6, sizeof (*sin6)); 1851 sin6->sin6_family = AF_INET6; 1852 bcopy(dsthp->h_addr_list[0], &sin6->sin6_addr, 1853 sizeof (struct in6_addr)); 1854 } 1855 break; 1856 case TOK_PROXYADDR: 1857 case TOK_PROXYADDR6: 1858 if (isrc != NULL) { 1859 ERROR(ep, ebuf, gettext( 1860 "Can only specify single " 1861 "proxy/inner-source address.\n")); 1862 break; 1863 } 1864 if ((pstr = strchr(*argv, '/')) != NULL) { 1865 /* Parse out the prefix. */ 1866 errno = 0; 1867 prefix = strtol(pstr + 1, NULL, 10); 1868 if (errno != 0) { 1869 ERROR1(ep, ebuf, gettext( 1870 "Invalid prefix %s."), pstr); 1871 break; 1872 } 1873 /* Recycle pstr */ 1874 alloclen = (int)(pstr - *argv); 1875 pstr = malloc(alloclen + 1); 1876 if (pstr == NULL) { 1877 Bail("malloc(pstr)"); 1878 } 1879 (void) strlcpy(pstr, *argv, alloclen + 1); 1880 } else { 1881 pstr = *argv; 1882 /* 1883 * Assume mapping to AF_INET6, and we're a host. 1884 * XXX some miscreants may still make classful 1885 * assumptions. If this is a problem, fix it 1886 * here. 1887 */ 1888 prefix = 128; 1889 } 1890 sa_len = parseaddr(pstr, &isrchp, 1891 (token == TOK_PROXYADDR6), ebuf); 1892 if (isrchp == NULL) { 1893 ERROR1(ep, ebuf, gettext( 1894 "Unknown proxy/inner-source address " 1895 "\"%s\"\n"), *argv); 1896 break; 1897 } 1898 if (pstr != *argv) 1899 free(pstr); 1900 argv++; 1901 alloclen = sizeof (*isrc) + roundup(sa_len, 8); 1902 isrc = malloc(alloclen); 1903 if (isrc == NULL) 1904 Bail("malloc(isrc)"); 1905 totallen += alloclen; 1906 isrc->sadb_address_len = SADB_8TO64(alloclen); 1907 isrc->sadb_address_exttype = SADB_EXT_ADDRESS_PROXY; 1908 isrc->sadb_address_reserved = 0; 1909 isrc->sadb_address_prefixlen = prefix; 1910 isrc->sadb_address_proto = 0; 1911 if (isrchp == &dummy.he || 1912 isrchp->h_addr_list[1] == NULL) { 1913 /* 1914 * Single address with -n flag or single name. 1915 */ 1916 sin6 = (struct sockaddr_in6 *)(isrc + 1); 1917 bzero(sin6, sizeof (*sin6)); 1918 sin6->sin6_family = AF_INET6; 1919 bcopy(isrchp->h_addr_list[0], &sin6->sin6_addr, 1920 sizeof (struct in6_addr)); 1921 /* 1922 * normalize prefixlen for IPv4-mapped 1923 * addresses. 1924 */ 1925 if (prefix <= 32 && 1926 IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) 1927 isrc->sadb_address_prefixlen += 96; 1928 alloc_inner = B_TRUE; 1929 } else { 1930 /* 1931 * If the proxy/isrc address is vague, don't 1932 * bother. 1933 */ 1934 totallen -= alloclen; 1935 free(isrc); 1936 isrc = NULL; 1937 WARN1(ep, ebuf, gettext( 1938 "Proxy/inner-source address %s " 1939 "is vague, not using.\n"), isrchp->h_name); 1940 freehostent(isrchp); 1941 isrchp = NULL; 1942 break; 1943 } 1944 break; 1945 case TOK_IDSTADDR: 1946 case TOK_IDSTADDR6: 1947 if (idst != NULL) { 1948 ERROR(ep, ebuf, gettext( 1949 "Can only specify single " 1950 "inner-destination address.\n")); 1951 break; 1952 } 1953 if ((pstr = strchr(*argv, '/')) != NULL) { 1954 /* Parse out the prefix. */ 1955 errno = 0; 1956 prefix = strtol(pstr + 1, NULL, 10); 1957 if (errno != 0) { 1958 ERROR1(ep, ebuf, gettext( 1959 "Invalid prefix %s.\n"), pstr); 1960 break; 1961 } 1962 /* Recycle pstr */ 1963 alloclen = (int)(pstr - *argv); 1964 pstr = malloc(alloclen + 1); 1965 if (pstr == NULL) { 1966 Bail("malloc(pstr)"); 1967 } 1968 (void) strlcpy(pstr, *argv, alloclen + 1); 1969 } else { 1970 pstr = *argv; 1971 /* 1972 * Assume mapping to AF_INET6, and we're a host. 1973 * XXX some miscreants may still make classful 1974 * assumptions. If this is a problem, fix it 1975 * here. 1976 */ 1977 prefix = 128; 1978 } 1979 sa_len = parseaddr(pstr, &idsthp, 1980 (token == TOK_IDSTADDR6), ebuf); 1981 if (idsthp == NULL) { 1982 ERROR1(ep, ebuf, gettext( 1983 "Unknown Inner Src address " 1984 " \"%s\"\n"), *argv); 1985 break; 1986 } 1987 if (pstr != *argv) 1988 free(pstr); 1989 argv++; 1990 alloclen = sizeof (*idst) + roundup(sa_len, 8); 1991 idst = malloc(alloclen); 1992 if (idst == NULL) 1993 Bail("malloc(idst)"); 1994 totallen += alloclen; 1995 idst->sadb_address_len = SADB_8TO64(alloclen); 1996 idst->sadb_address_exttype = 1997 SADB_X_EXT_ADDRESS_INNER_DST; 1998 idst->sadb_address_reserved = 0; 1999 idst->sadb_address_prefixlen = prefix; 2000 idst->sadb_address_proto = 0; 2001 if (idsthp == &dummy.he || 2002 idsthp->h_addr_list[1] == NULL) { 2003 /* 2004 * Single address with -n flag or single name. 2005 */ 2006 sin6 = (struct sockaddr_in6 *)(idst + 1); 2007 bzero(sin6, sizeof (*sin6)); 2008 sin6->sin6_family = AF_INET6; 2009 bcopy(idsthp->h_addr_list[0], &sin6->sin6_addr, 2010 sizeof (struct in6_addr)); 2011 /* 2012 * normalize prefixlen for IPv4-mapped 2013 * addresses. 2014 */ 2015 if (prefix <= 32 && 2016 IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) 2017 idst->sadb_address_prefixlen += 96; 2018 alloc_inner = B_TRUE; 2019 } else { 2020 /* 2021 * If the idst address is vague, don't bother. 2022 */ 2023 totallen -= alloclen; 2024 free(idst); 2025 idst = NULL; 2026 WARN1(ep, ebuf, gettext( 2027 "Inner destination address %s " 2028 "is vague, not using.\n"), idsthp->h_name); 2029 freehostent(idsthp); 2030 idsthp = NULL; 2031 break; 2032 } 2033 break; 2034 case TOK_NATLOC: 2035 if (natt_local != NULL) { 2036 ERROR(ep, ebuf, gettext( 2037 "Can only specify " 2038 "single NAT-T local address.\n")); 2039 break; 2040 } 2041 sa_len = parseaddr(*argv, &natt_lhp, 0, ebuf); 2042 if (natt_lhp == NULL) { 2043 ERROR1(ep, ebuf, gettext( 2044 "Unknown NAT-T local address \"%s\"\n"), 2045 *argv); 2046 break; 2047 } 2048 argv++; 2049 /* 2050 * Round of the sockaddr length to an 8 byte 2051 * boundary to make PF_KEY happy. 2052 */ 2053 alloclen = sizeof (*natt_local) + roundup(sa_len, 8); 2054 natt_local = malloc(alloclen); 2055 if (natt_local == NULL) 2056 Bail("malloc(natt_local)"); 2057 totallen += alloclen; 2058 natt_local->sadb_address_len = SADB_8TO64(alloclen); 2059 natt_local->sadb_address_exttype = 2060 SADB_X_EXT_ADDRESS_NATT_LOC; 2061 natt_local->sadb_address_reserved = 0; 2062 natt_local->sadb_address_prefixlen = 0; 2063 natt_local->sadb_address_proto = 0; 2064 if (natt_lhp == &dummy.he || 2065 natt_lhp->h_addr_list[1] == NULL) { 2066 /* 2067 * Single address with -n flag or single name. 2068 */ 2069 sin6 = (struct sockaddr_in6 *)(natt_local + 1); 2070 bzero(sin6, sizeof (*sin6)); 2071 sin6->sin6_family = AF_INET6; 2072 bcopy(natt_lhp->h_addr_list[0], 2073 &sin6->sin6_addr, sizeof (struct in6_addr)); 2074 } else { 2075 /* 2076 * If the nat-local address is vague, don't 2077 * bother. 2078 */ 2079 totallen -= alloclen; 2080 free(natt_local); 2081 natt_local = NULL; 2082 WARN1(ep, ebuf, gettext( 2083 "NAT-T local address %s " 2084 "is vague, not using.\n"), 2085 natt_lhp->h_name); 2086 freehostent(natt_lhp); 2087 natt_lhp = NULL; 2088 break; 2089 } 2090 break; 2091 case TOK_NATREM: 2092 if (natt_remote != NULL) { 2093 ERROR(ep, ebuf, gettext( 2094 "Can only specify " 2095 "single NAT-T remote address.\n")); 2096 break; 2097 } 2098 sa_len = parseaddr(*argv, &natt_rhp, 0, ebuf); 2099 if (natt_rhp == NULL) { 2100 ERROR1(ep, ebuf, gettext( 2101 "Unknown NAT-T remote address \"%s\"\n"), 2102 *argv); 2103 break; 2104 } 2105 argv++; 2106 /* 2107 * Round of the sockaddr length to an 8 byte 2108 * boundary to make PF_KEY happy. 2109 */ 2110 alloclen = sizeof (*natt_remote) + roundup(sa_len, 8); 2111 natt_remote = malloc(alloclen); 2112 if (natt_remote == NULL) 2113 Bail("malloc(natt_remote)"); 2114 totallen += alloclen; 2115 natt_remote->sadb_address_len = SADB_8TO64(alloclen); 2116 natt_remote->sadb_address_exttype = 2117 SADB_X_EXT_ADDRESS_NATT_REM; 2118 natt_remote->sadb_address_reserved = 0; 2119 natt_remote->sadb_address_prefixlen = 0; 2120 natt_remote->sadb_address_proto = 0; 2121 if (natt_rhp == &dummy.he || 2122 natt_rhp->h_addr_list[1] == NULL) { 2123 /* 2124 * Single address with -n flag or single name. 2125 */ 2126 sin6 = (struct sockaddr_in6 *)(natt_remote + 1); 2127 bzero(sin6, sizeof (*sin6)); 2128 sin6->sin6_family = AF_INET6; 2129 bcopy(natt_rhp->h_addr_list[0], 2130 &sin6->sin6_addr, sizeof (struct in6_addr)); 2131 } else { 2132 /* 2133 * If the nat-renote address is vague, don't 2134 * bother. 2135 */ 2136 totallen -= alloclen; 2137 free(natt_remote); 2138 natt_remote = NULL; 2139 WARN1(ep, ebuf, gettext( 2140 "NAT-T remote address %s " 2141 "is vague, not using.\n"), 2142 natt_rhp->h_name); 2143 freehostent(natt_rhp); 2144 natt_rhp = NULL; 2145 break; 2146 } 2147 break; 2148 case TOK_ENCRKEY: 2149 if (encrypt != NULL) { 2150 ERROR(ep, ebuf, gettext( 2151 "Can only specify " 2152 "single encryption key.\n")); 2153 break; 2154 } 2155 if (assoc->sadb_sa_encrypt == SADB_EALG_NULL) { 2156 FATAL(ep, ebuf, gettext( 2157 "Cannot specify a key with NULL " 2158 "encryption algorithm.\n")); 2159 break; 2160 } 2161 encrypt = parsekey(*argv, ebuf); 2162 argv++; 2163 if (encrypt == NULL) { 2164 ERROR(ep, ebuf, gettext( 2165 "Invalid encryption key.\n")); 2166 break; 2167 } 2168 totallen += SADB_64TO8(encrypt->sadb_key_len); 2169 encrypt->sadb_key_exttype = SADB_EXT_KEY_ENCRYPT; 2170 break; 2171 case TOK_AUTHKEY: 2172 if (auth != NULL) { 2173 ERROR(ep, ebuf, gettext( 2174 "Can only specify single" 2175 " authentication key.\n")); 2176 break; 2177 } 2178 auth = parsekey(*argv, ebuf); 2179 argv++; 2180 if (auth == NULL) { 2181 ERROR(ep, ebuf, gettext( 2182 "Invalid authentication key.\n")); 2183 break; 2184 } 2185 totallen += SADB_64TO8(auth->sadb_key_len); 2186 auth->sadb_key_exttype = SADB_EXT_KEY_AUTH; 2187 break; 2188 case TOK_SRCIDTYPE: 2189 if (*argv == NULL || *(argv + 1) == NULL) { 2190 FATAL(ep, ebuf, gettext( 2191 "Unexpected end of command " 2192 "line - Expecting Src Type.\n")); 2193 /* NOTREACHED */ 2194 break; 2195 } 2196 if (srcid != NULL) { 2197 ERROR(ep, ebuf, gettext( 2198 "Can only specify single" 2199 " source certificate identity.\n")); 2200 break; 2201 } 2202 alloclen = sizeof (*srcid) + 2203 roundup(strlen(*(argv + 1)) + 1, 8); 2204 srcid = malloc(alloclen); 2205 if (srcid == NULL) 2206 Bail("malloc(srcid)"); 2207 totallen += alloclen; 2208 srcid->sadb_ident_type = parseidtype(*argv, ebuf); 2209 argv++; 2210 srcid->sadb_ident_len = SADB_8TO64(alloclen); 2211 srcid->sadb_ident_exttype = SADB_EXT_IDENTITY_SRC; 2212 srcid->sadb_ident_reserved = 0; 2213 srcid->sadb_ident_id = 0; /* Not useful here. */ 2214 (void) strlcpy((char *)(srcid + 1), *argv, alloclen); 2215 argv++; 2216 break; 2217 case TOK_DSTIDTYPE: 2218 if (*argv == NULL || *(argv + 1) == NULL) { 2219 ERROR(ep, ebuf, gettext( 2220 "Unexpected end of command" 2221 " line - expecting dst type.\n")); 2222 break; 2223 } 2224 if (dstid != NULL) { 2225 ERROR(ep, ebuf, gettext( 2226 "Can only specify single destination " 2227 "certificate identity.\n")); 2228 break; 2229 } 2230 alloclen = sizeof (*dstid) + 2231 roundup(strlen(*(argv + 1)) + 1, 8); 2232 dstid = malloc(alloclen); 2233 if (dstid == NULL) 2234 Bail("malloc(dstid)"); 2235 totallen += alloclen; 2236 dstid->sadb_ident_type = parseidtype(*argv, ebuf); 2237 argv++; 2238 dstid->sadb_ident_len = SADB_8TO64(alloclen); 2239 dstid->sadb_ident_exttype = SADB_EXT_IDENTITY_DST; 2240 dstid->sadb_ident_reserved = 0; 2241 dstid->sadb_ident_id = 0; /* Not useful here. */ 2242 (void) strlcpy((char *)(dstid + 1), *argv, alloclen); 2243 argv++; 2244 break; 2245 case TOK_HARD_ALLOC: 2246 case TOK_HARD_BYTES: 2247 case TOK_HARD_ADDTIME: 2248 case TOK_HARD_USETIME: 2249 if (hard == NULL) { 2250 hard = malloc(sizeof (*hard)); 2251 if (hard == NULL) 2252 Bail("malloc(hard_lifetime)"); 2253 bzero(hard, sizeof (*hard)); 2254 hard->sadb_lifetime_exttype = 2255 SADB_EXT_LIFETIME_HARD; 2256 hard->sadb_lifetime_len = 2257 SADB_8TO64(sizeof (*hard)); 2258 totallen += sizeof (*hard); 2259 } 2260 switch (token) { 2261 case TOK_HARD_ALLOC: 2262 if (hard->sadb_lifetime_allocations != 0) { 2263 ERROR(ep, ebuf, gettext( 2264 "Can only specify single" 2265 " hard allocation limit.\n")); 2266 break; 2267 } 2268 hard->sadb_lifetime_allocations = 2269 (uint32_t)parsenum(*argv, B_TRUE, ebuf); 2270 break; 2271 case TOK_HARD_BYTES: 2272 if (hard->sadb_lifetime_bytes != 0) { 2273 ERROR(ep, ebuf, gettext( 2274 "Can only specify " 2275 "single hard byte limit.\n")); 2276 break; 2277 } 2278 hard->sadb_lifetime_bytes = parsenum(*argv, 2279 B_TRUE, ebuf); 2280 break; 2281 case TOK_HARD_ADDTIME: 2282 if (hard->sadb_lifetime_addtime != 0) { 2283 ERROR(ep, ebuf, gettext( 2284 "Can only specify " 2285 "single past-add lifetime.\n")); 2286 break; 2287 } 2288 hard->sadb_lifetime_addtime = parsenum(*argv, 2289 B_TRUE, ebuf); 2290 break; 2291 case TOK_HARD_USETIME: 2292 if (hard->sadb_lifetime_usetime != 0) { 2293 ERROR(ep, ebuf, gettext( 2294 "Can only specify " 2295 "single past-use lifetime.\n")); 2296 break; 2297 } 2298 hard->sadb_lifetime_usetime = parsenum(*argv, 2299 B_TRUE, ebuf); 2300 break; 2301 } 2302 argv++; 2303 break; 2304 case TOK_SOFT_ALLOC: 2305 case TOK_SOFT_BYTES: 2306 case TOK_SOFT_ADDTIME: 2307 case TOK_SOFT_USETIME: 2308 if (soft == NULL) { 2309 soft = malloc(sizeof (*soft)); 2310 if (soft == NULL) 2311 Bail("malloc(soft_lifetime)"); 2312 bzero(soft, sizeof (*soft)); 2313 soft->sadb_lifetime_exttype = 2314 SADB_EXT_LIFETIME_SOFT; 2315 soft->sadb_lifetime_len = 2316 SADB_8TO64(sizeof (*soft)); 2317 totallen += sizeof (*soft); 2318 } 2319 switch (token) { 2320 case TOK_SOFT_ALLOC: 2321 if (soft->sadb_lifetime_allocations != 0) { 2322 ERROR(ep, ebuf, gettext( 2323 "Can only specify single" 2324 " soft allocation limit.\n")); 2325 break; 2326 } 2327 soft->sadb_lifetime_allocations = 2328 (uint32_t)parsenum(*argv, B_TRUE, ebuf); 2329 break; 2330 case TOK_SOFT_BYTES: 2331 if (soft->sadb_lifetime_bytes != 0) { 2332 ERROR(ep, ebuf, gettext( 2333 "Can only specify single" 2334 " soft byte limit.\n")); 2335 break; 2336 } 2337 soft->sadb_lifetime_bytes = parsenum(*argv, 2338 B_TRUE, ebuf); 2339 break; 2340 case TOK_SOFT_ADDTIME: 2341 if (soft->sadb_lifetime_addtime != 0) { 2342 ERROR(ep, ebuf, gettext( 2343 "Can only specify single" 2344 " past-add lifetime.\n")); 2345 break; 2346 } 2347 soft->sadb_lifetime_addtime = parsenum(*argv, 2348 B_TRUE, ebuf); 2349 break; 2350 case TOK_SOFT_USETIME: 2351 if (soft->sadb_lifetime_usetime != 0) { 2352 ERROR(ep, ebuf, gettext( 2353 "Can only specify single" 2354 " past-use lifetime.\n")); 2355 break; 2356 } 2357 soft->sadb_lifetime_usetime = parsenum(*argv, 2358 B_TRUE, ebuf); 2359 break; 2360 } 2361 argv++; 2362 break; 2363 default: 2364 ERROR1(ep, ebuf, gettext( 2365 "Don't use extension %s for add/update.\n"), 2366 *(argv - 1)); 2367 break; 2368 } 2369 } while (token != TOK_EOF); 2370 2371 handle_errors(ep, ebuf, B_TRUE, B_FALSE); 2372 2373 /* 2374 * If we specify inner ports w/o addresses, we still need to 2375 * allocate. Also, if we have one inner address, we need the 2376 * other, even if we don't specify anything. 2377 */ 2378 if (alloc_inner && idst == NULL) { 2379 /* Allocate zeroed-out. */ 2380 alloclen = sizeof (*idst) + sizeof (struct sockaddr_in6); 2381 idst = calloc(1, alloclen); 2382 if (idst == NULL) { 2383 Bail("malloc(implicit idst)"); 2384 } 2385 totallen += alloclen; 2386 idst->sadb_address_len = SADB_8TO64(alloclen); 2387 idst->sadb_address_exttype = SADB_X_EXT_ADDRESS_INNER_DST; 2388 sin6 = (struct sockaddr_in6 *)(idst + 1); 2389 sin6->sin6_family = AF_INET6; 2390 } 2391 2392 if (alloc_inner && isrc == NULL) { 2393 /* Allocate zeroed-out. */ 2394 alloclen = sizeof (*isrc) + sizeof (struct sockaddr_in6); 2395 isrc = calloc(1, alloclen); 2396 if (isrc == NULL) { 2397 Bail("malloc(implicit isrc)"); 2398 } 2399 totallen += alloclen; 2400 isrc->sadb_address_len = SADB_8TO64(alloclen); 2401 isrc->sadb_address_exttype = SADB_X_EXT_ADDRESS_INNER_SRC; 2402 sin6 = (struct sockaddr_in6 *)(isrc + 1); 2403 sin6->sin6_family = AF_INET6; 2404 } 2405 2406 /* 2407 * Okay, so now I have all of the potential extensions! 2408 * Allocate a single contiguous buffer. Keep in mind that it'll 2409 * be enough because the key itself will be yanked. 2410 */ 2411 2412 if (src == NULL && dst != NULL) { 2413 /* 2414 * Set explicit unspecified source address. 2415 */ 2416 size_t lenbytes = SADB_64TO8(dst->sadb_address_len); 2417 2418 unspec_src = B_TRUE; 2419 totallen += lenbytes; 2420 src = malloc(lenbytes); 2421 if (src == NULL) 2422 Bail("malloc(implicit src)"); 2423 /* Confusing, but we're copying from DST to SRC. :) */ 2424 bcopy(dst, src, lenbytes); 2425 src->sadb_address_exttype = SADB_EXT_ADDRESS_SRC; 2426 sin6 = (struct sockaddr_in6 *)(src + 1); 2427 bzero(sin6, sizeof (*sin6)); 2428 sin6->sin6_family = AF_INET6; 2429 } 2430 2431 msg.sadb_msg_len = SADB_8TO64(totallen); 2432 2433 buffer = malloc(totallen); 2434 nexthdr = buffer; 2435 bcopy(&msg, nexthdr, sizeof (msg)); 2436 nexthdr += SADB_8TO64(sizeof (msg)); 2437 if (assoc != NULL) { 2438 if (assoc->sadb_sa_spi == 0) { 2439 ERROR1(ep, ebuf, gettext( 2440 "The SPI value is missing for " 2441 "the association you wish to %s.\n"), thiscmd); 2442 } 2443 if (assoc->sadb_sa_auth == 0 && assoc->sadb_sa_encrypt == 0 && 2444 cmd == CMD_ADD) { 2445 free(assoc); 2446 FATAL(ep, ebuf, gettext( 2447 "Select at least one algorithm " 2448 "for this add.\n")); 2449 } 2450 2451 /* Hack to let user specify NULL ESP implicitly. */ 2452 if (msg.sadb_msg_satype == SADB_SATYPE_ESP && 2453 assoc->sadb_sa_encrypt == 0) 2454 assoc->sadb_sa_encrypt = SADB_EALG_NULL; 2455 2456 /* 0 is an actual value. Print a warning if it was entered. */ 2457 if (assoc->sadb_sa_state == 0) { 2458 if (readstate) { 2459 ERROR(ep, ebuf, gettext( 2460 "WARNING: Cannot set LARVAL SA state.\n")); 2461 } 2462 assoc->sadb_sa_state = SADB_SASTATE_MATURE; 2463 } 2464 2465 if (use_natt) { 2466 if (natt_remote != NULL) 2467 assoc->sadb_sa_flags |= SADB_X_SAFLAGS_NATT_REM; 2468 if (natt_local != NULL) 2469 assoc->sadb_sa_flags |= SADB_X_SAFLAGS_NATT_LOC; 2470 } 2471 2472 if (alloc_inner) { 2473 /* 2474 * For now, assume RFC 3884's dream of transport-mode 2475 * SAs with inner IP address selectors will not 2476 * happen. 2477 */ 2478 assoc->sadb_sa_flags |= SADB_X_SAFLAGS_TUNNEL; 2479 if (proto != 0 && proto != IPPROTO_ENCAP && 2480 proto != IPPROTO_IPV6) { 2481 ERROR1(ep, ebuf, gettext( 2482 "WARNING: Protocol type %d not " 2483 "for use with Tunnel-Mode SA.\n"), proto); 2484 /* Continue and let PF_KEY scream... */ 2485 } 2486 } 2487 2488 bcopy(assoc, nexthdr, SADB_64TO8(assoc->sadb_sa_len)); 2489 nexthdr += assoc->sadb_sa_len; 2490 /* Save the SPI for the case of an error. */ 2491 spi = assoc->sadb_sa_spi; 2492 free(assoc); 2493 } else { 2494 ERROR1(ep, ebuf, gettext( 2495 "Need SA parameters for %s.\n"), thiscmd); 2496 } 2497 2498 if (hard != NULL) { 2499 bcopy(hard, nexthdr, SADB_64TO8(hard->sadb_lifetime_len)); 2500 nexthdr += hard->sadb_lifetime_len; 2501 free(hard); 2502 } 2503 2504 if (soft != NULL) { 2505 bcopy(soft, nexthdr, SADB_64TO8(soft->sadb_lifetime_len)); 2506 nexthdr += soft->sadb_lifetime_len; 2507 free(soft); 2508 } 2509 2510 if (encrypt == NULL && auth == NULL && cmd == CMD_ADD) { 2511 ERROR(ep, ebuf, gettext( 2512 "Must have at least one key for an add.\n")); 2513 } 2514 2515 if (encrypt != NULL) { 2516 bcopy(encrypt, nexthdr, SADB_64TO8(encrypt->sadb_key_len)); 2517 nexthdr += encrypt->sadb_key_len; 2518 bzero(encrypt, SADB_64TO8(encrypt->sadb_key_len)); 2519 free(encrypt); 2520 } 2521 2522 if (auth != NULL) { 2523 bcopy(auth, nexthdr, SADB_64TO8(auth->sadb_key_len)); 2524 nexthdr += auth->sadb_key_len; 2525 bzero(auth, SADB_64TO8(auth->sadb_key_len)); 2526 free(auth); 2527 } 2528 2529 if (srcid != NULL) { 2530 bcopy(srcid, nexthdr, SADB_64TO8(srcid->sadb_ident_len)); 2531 nexthdr += srcid->sadb_ident_len; 2532 free(srcid); 2533 } 2534 2535 if (dstid != NULL) { 2536 bcopy(dstid, nexthdr, SADB_64TO8(dstid->sadb_ident_len)); 2537 nexthdr += dstid->sadb_ident_len; 2538 free(dstid); 2539 } 2540 2541 if (dst != NULL) { 2542 bcopy(dst, nexthdr, SADB_64TO8(dst->sadb_address_len)); 2543 free(dst); 2544 dst = (struct sadb_address *)nexthdr; 2545 dst->sadb_address_proto = proto; 2546 ((struct sockaddr_in6 *)(dst + 1))->sin6_port = htons(dstport); 2547 nexthdr += dst->sadb_address_len; 2548 } else { 2549 FATAL1(ep, ebuf, gettext( 2550 "Need destination address for %s.\n"), thiscmd); 2551 } 2552 2553 if (use_natt) { 2554 if (natt_remote == NULL && natt_local == NULL) { 2555 ERROR(ep, ebuf, gettext( 2556 "Must specify NAT-T remote or local address " 2557 "for UDP encapsulation.\n")); 2558 } 2559 2560 if (natt_lport != 0 && natt_local == NULL) { 2561 ERROR(ep, ebuf, gettext( 2562 "If NAT-T local port is specified, NAT-T " 2563 "local address must also be specified.\n")); 2564 } 2565 2566 if (natt_rport != 0 && natt_remote == NULL) { 2567 ERROR(ep, ebuf, gettext( 2568 "If NAT-T remote port is specified, NAT-T " 2569 "remote address must also be specified.\n")); 2570 } 2571 2572 if (natt_remote != NULL) { 2573 bcopy(natt_remote, nexthdr, 2574 SADB_64TO8(natt_remote->sadb_address_len)); 2575 free(natt_remote); 2576 natt_remote = (struct sadb_address *)nexthdr; 2577 nexthdr += natt_remote->sadb_address_len; 2578 ((struct sockaddr_in6 *)(natt_remote + 1))->sin6_port = 2579 htons(natt_rport); 2580 } 2581 2582 if (natt_local != NULL) { 2583 bcopy(natt_local, nexthdr, 2584 SADB_64TO8(natt_local->sadb_address_len)); 2585 free(natt_local); 2586 natt_local = (struct sadb_address *)nexthdr; 2587 nexthdr += natt_local->sadb_address_len; 2588 ((struct sockaddr_in6 *)(natt_local + 1))->sin6_port = 2589 htons(natt_lport); 2590 } 2591 } 2592 2593 handle_errors(ep, ebuf, B_TRUE, B_FALSE); 2594 2595 /* 2596 * PF_KEY requires a source address extension, even if the source 2597 * address itself is unspecified. (See "Set explicit unspecified..." 2598 * code fragment above. Destination reality check was above.) 2599 */ 2600 bcopy(src, nexthdr, SADB_64TO8(src->sadb_address_len)); 2601 free(src); 2602 src = (struct sadb_address *)nexthdr; 2603 src->sadb_address_proto = proto; 2604 ((struct sockaddr_in6 *)(src + 1))->sin6_port = htons(srcport); 2605 nexthdr += src->sadb_address_len; 2606 2607 if (isrc != NULL) { 2608 bcopy(isrc, nexthdr, SADB_64TO8(isrc->sadb_address_len)); 2609 free(isrc); 2610 isrc = (struct sadb_address *)nexthdr; 2611 isrc->sadb_address_proto = iproto; 2612 ((struct sockaddr_in6 *)(isrc + 1))->sin6_port = 2613 htons(isrcport); 2614 nexthdr += isrc->sadb_address_len; 2615 } 2616 2617 if (idst != NULL) { 2618 bcopy(idst, nexthdr, SADB_64TO8(idst->sadb_address_len)); 2619 free(idst); 2620 idst = (struct sadb_address *)nexthdr; 2621 idst->sadb_address_proto = iproto; 2622 ((struct sockaddr_in6 *)(idst + 1))->sin6_port = 2623 htons(idstport); 2624 nexthdr += idst->sadb_address_len; 2625 } 2626 2627 if (cflag) { 2628 /* 2629 * Assume the checked cmd would have worked if it was actually 2630 * used. doaddresses() will increment lines_added if it 2631 * succeeds. 2632 */ 2633 lines_added++; 2634 } else { 2635 doaddresses((cmd == CMD_ADD) ? SADB_ADD : SADB_UPDATE, satype, 2636 cmd, srchp, dsthp, src, dst, unspec_src, buffer, totallen, 2637 spi, ebuf); 2638 } 2639 2640 if (isrchp != NULL && isrchp != &dummy.he) 2641 freehostent(isrchp); 2642 if (idsthp != NULL && idsthp != &dummy.he) 2643 freehostent(idsthp); 2644 if (srchp != NULL && srchp != &dummy.he) 2645 freehostent(srchp); 2646 if (dsthp != NULL && dsthp != &dummy.he) 2647 freehostent(dsthp); 2648 if (natt_lhp != NULL && natt_lhp != &dummy.he) 2649 freehostent(natt_lhp); 2650 if (natt_rhp != NULL && natt_rhp != &dummy.he) 2651 freehostent(natt_rhp); 2652 2653 free(ebuf); 2654 free(buffer); 2655 } 2656 2657 /* 2658 * DELETE and GET are similar, in that they only need the extensions 2659 * required to _find_ an SA, and then either delete it or obtain its 2660 * information. 2661 */ 2662 static void 2663 dodelget(int cmd, int satype, char *argv[], char *ebuf) 2664 { 2665 struct sadb_msg *msg = (struct sadb_msg *)get_buffer; 2666 uint64_t *nextext; 2667 struct sadb_sa *assoc = NULL; 2668 struct sadb_address *src = NULL, *dst = NULL; 2669 int next, token, sa_len; 2670 char *thiscmd; 2671 uint32_t spi; 2672 struct hostent *srchp = NULL, *dsthp = NULL; 2673 struct sockaddr_in6 *sin6; 2674 boolean_t unspec_src = B_TRUE; 2675 uint16_t srcport = 0, dstport = 0; 2676 uint8_t proto = 0; 2677 char *ep = NULL; 2678 2679 msg_init(msg, ((cmd == CMD_GET) ? SADB_GET : SADB_DELETE), 2680 (uint8_t)satype); 2681 /* Set the first extension header to right past the base message. */ 2682 nextext = (uint64_t *)(msg + 1); 2683 bzero(nextext, sizeof (get_buffer) - sizeof (*msg)); 2684 2685 thiscmd = (cmd == CMD_GET) ? "get" : "delete"; 2686 2687 #define ALLOC_ADDR_EXT(ext, exttype) \ 2688 (ext) = (struct sadb_address *)nextext; \ 2689 nextext = (uint64_t *)((ext) + 1); \ 2690 nextext += SADB_8TO64(roundup(sa_len, 8)); \ 2691 (ext)->sadb_address_exttype = exttype; \ 2692 (ext)->sadb_address_len = nextext - ((uint64_t *)ext); 2693 2694 /* Assume last element in argv is set to NULL. */ 2695 do { 2696 token = parseextval(*argv, &next); 2697 argv++; 2698 switch (token) { 2699 case TOK_EOF: 2700 /* Do nothing, I'm done. */ 2701 break; 2702 case TOK_UNKNOWN: 2703 ERROR1(ep, ebuf, gettext( 2704 "Unknown extension field \"%s\"\n"), *(argv - 1)); 2705 break; 2706 case TOK_SPI: 2707 if (assoc != NULL) { 2708 ERROR(ep, ebuf, gettext( 2709 "Can only specify single SPI value.\n")); 2710 break; 2711 } 2712 assoc = (struct sadb_sa *)nextext; 2713 nextext = (uint64_t *)(assoc + 1); 2714 assoc->sadb_sa_len = SADB_8TO64(sizeof (*assoc)); 2715 assoc->sadb_sa_exttype = SADB_EXT_SA; 2716 assoc->sadb_sa_spi = htonl((uint32_t)parsenum(*argv, 2717 B_TRUE, ebuf)); 2718 spi = assoc->sadb_sa_spi; 2719 argv++; 2720 break; 2721 case TOK_SRCPORT: 2722 if (srcport != 0) { 2723 ERROR(ep, ebuf, gettext( 2724 "Can only specify single source port.\n")); 2725 break; 2726 } 2727 srcport = parsenum(*argv, B_TRUE, ebuf); 2728 argv++; 2729 break; 2730 case TOK_DSTPORT: 2731 if (dstport != 0) { 2732 ERROR(ep, ebuf, gettext( 2733 "Can only " 2734 "specify single destination port.\n")); 2735 break; 2736 } 2737 dstport = parsenum(*argv, B_TRUE, ebuf); 2738 argv++; 2739 break; 2740 case TOK_PROTO: 2741 if (proto != 0) { 2742 ERROR(ep, ebuf, gettext( 2743 "Can only specify single protocol.\n")); 2744 break; 2745 } 2746 proto = parsenum(*argv, B_TRUE, ebuf); 2747 argv++; 2748 break; 2749 case TOK_SRCADDR: 2750 case TOK_SRCADDR6: 2751 if (src != NULL) { 2752 ERROR(ep, ebuf, gettext( 2753 "Can only specify single source addr.\n")); 2754 break; 2755 } 2756 sa_len = parseaddr(*argv, &srchp, 2757 (token == TOK_SRCADDR6), ebuf); 2758 if (srchp == NULL) { 2759 ERROR1(ep, ebuf, gettext( 2760 "Unknown source address \"%s\"\n"), *argv); 2761 break; 2762 } 2763 argv++; 2764 2765 unspec_src = B_FALSE; 2766 2767 ALLOC_ADDR_EXT(src, SADB_EXT_ADDRESS_SRC); 2768 2769 if (srchp == &dummy.he) { 2770 /* 2771 * Single address with -n flag. 2772 */ 2773 sin6 = (struct sockaddr_in6 *)(src + 1); 2774 bzero(sin6, sizeof (*sin6)); 2775 sin6->sin6_family = AF_INET6; 2776 bcopy(srchp->h_addr_list[0], &sin6->sin6_addr, 2777 sizeof (struct in6_addr)); 2778 } 2779 /* The rest is pre-bzeroed for us. */ 2780 break; 2781 case TOK_DSTADDR: 2782 case TOK_DSTADDR6: 2783 if (dst != NULL) { 2784 ERROR(ep, ebuf, gettext( 2785 "Can only specify single destination " 2786 "address.\n")); 2787 break; 2788 } 2789 sa_len = parseaddr(*argv, &dsthp, 2790 (token == TOK_SRCADDR6), ebuf); 2791 if (dsthp == NULL) { 2792 ERROR1(ep, ebuf, gettext( 2793 "Unknown destination address \"%s\"\n"), 2794 *argv); 2795 break; 2796 } 2797 argv++; 2798 2799 ALLOC_ADDR_EXT(dst, SADB_EXT_ADDRESS_DST); 2800 2801 if (dsthp == &dummy.he) { 2802 /* 2803 * Single address with -n flag. 2804 */ 2805 sin6 = (struct sockaddr_in6 *)(dst + 1); 2806 bzero(sin6, sizeof (*sin6)); 2807 sin6->sin6_family = AF_INET6; 2808 bcopy(dsthp->h_addr_list[0], &sin6->sin6_addr, 2809 sizeof (struct in6_addr)); 2810 } 2811 /* The rest is pre-bzeroed for us. */ 2812 break; 2813 default: 2814 ERROR2(ep, ebuf, gettext( 2815 "Don't use extension %s for '%s' command.\n"), 2816 *(argv - 1), thiscmd); 2817 break; 2818 } 2819 } while (token != TOK_EOF); 2820 2821 handle_errors(ep, ebuf, B_TRUE, B_FALSE); 2822 2823 if ((srcport != 0) && (src == NULL)) { 2824 ALLOC_ADDR_EXT(src, SADB_EXT_ADDRESS_SRC); 2825 sin6 = (struct sockaddr_in6 *)(src + 1); 2826 src->sadb_address_proto = proto; 2827 bzero(sin6, sizeof (*sin6)); 2828 sin6->sin6_family = AF_INET6; 2829 sin6->sin6_port = htons(srcport); 2830 } 2831 2832 if ((dstport != 0) && (dst == NULL)) { 2833 ALLOC_ADDR_EXT(dst, SADB_EXT_ADDRESS_DST); 2834 sin6 = (struct sockaddr_in6 *)(dst + 1); 2835 src->sadb_address_proto = proto; 2836 bzero(sin6, sizeof (*sin6)); 2837 sin6->sin6_family = AF_INET6; 2838 sin6->sin6_port = htons(dstport); 2839 } 2840 2841 /* So I have enough of the message to send it down! */ 2842 msg->sadb_msg_len = nextext - get_buffer; 2843 2844 if (assoc == NULL) { 2845 FATAL1(ep, ebuf, gettext( 2846 "Need SA parameters for %s.\n"), thiscmd); 2847 } 2848 2849 if (cflag) { 2850 /* 2851 * Assume the checked cmd would have worked if it was actually 2852 * used. doaddresses() will increment lines_added if it 2853 * succeeds. 2854 */ 2855 lines_added++; 2856 } else { 2857 doaddresses((cmd == CMD_GET) ? SADB_GET : SADB_DELETE, satype, 2858 cmd, srchp, dsthp, src, dst, unspec_src, get_buffer, 2859 sizeof (get_buffer), spi, NULL); 2860 } 2861 2862 if (srchp != NULL && srchp != &dummy.he) 2863 freehostent(srchp); 2864 if (dsthp != NULL && dsthp != &dummy.he) 2865 freehostent(dsthp); 2866 } 2867 2868 /* 2869 * "ipseckey monitor" should exit very gracefully if ^C is tapped. 2870 */ 2871 static void 2872 monitor_catch(int signal) 2873 { 2874 errx(signal, gettext("Bailing on signal %d."), signal); 2875 } 2876 2877 /* 2878 * Loop forever, listening on PF_KEY messages. 2879 */ 2880 static void 2881 domonitor(boolean_t passive) 2882 { 2883 struct sadb_msg *samsg; 2884 int rc; 2885 2886 /* Catch ^C. */ 2887 (void) signal(SIGINT, monitor_catch); 2888 2889 samsg = (struct sadb_msg *)get_buffer; 2890 if (!passive) { 2891 (void) printf(gettext("Actively")); 2892 msg_init(samsg, SADB_X_PROMISC, 1); /* Turn ON promisc. */ 2893 rc = key_write(keysock, samsg, sizeof (*samsg)); 2894 if (rc == -1) 2895 Bail("write (SADB_X_PROMISC)"); 2896 } else { 2897 (void) printf(gettext("Passively")); 2898 } 2899 (void) printf(gettext(" monitoring the PF_KEY socket.\n")); 2900 2901 for (; ; ) { 2902 /* 2903 * I assume that read() is non-blocking, and will never 2904 * return 0. 2905 */ 2906 rc = read(keysock, samsg, sizeof (get_buffer)); 2907 if (rc == -1) 2908 Bail("read (in domonitor)"); 2909 (void) printf(gettext("Read %d bytes.\n"), rc); 2910 /* 2911 * Q: Should I use the same method of printing as GET does? 2912 * A: For now, yes. 2913 */ 2914 print_samsg(get_buffer, B_TRUE, vflag); 2915 (void) putchar('\n'); 2916 } 2917 } 2918 2919 /* 2920 * Either mask or unmask all relevant signals. 2921 */ 2922 static void 2923 mask_signals(boolean_t unmask) 2924 { 2925 sigset_t set; 2926 static sigset_t oset; 2927 2928 if (unmask) { 2929 (void) sigprocmask(SIG_SETMASK, &oset, NULL); 2930 } else { 2931 (void) sigfillset(&set); 2932 (void) sigprocmask(SIG_SETMASK, &set, &oset); 2933 } 2934 } 2935 2936 /* 2937 * Assorted functions to print help text. 2938 */ 2939 #define puts_tr(s) (void) puts(gettext(s)) 2940 2941 static void 2942 doattrhelp() 2943 { 2944 int i; 2945 2946 puts_tr("\nSA attributes:"); 2947 2948 for (i = 0; tokens[i].string != NULL; i++) { 2949 if (i%3 == 0) 2950 (void) printf("\n"); 2951 (void) printf(" %-15.15s", tokens[i].string); 2952 } 2953 (void) printf("\n"); 2954 } 2955 2956 static void 2957 dohelpcmd(char *cmds) 2958 { 2959 int cmd; 2960 2961 if (strcmp(cmds, "attr") == 0) { 2962 doattrhelp(); 2963 return; 2964 } 2965 2966 cmd = parsecmd(cmds); 2967 switch (cmd) { 2968 case CMD_UPDATE: 2969 puts_tr("update - Update an existing SA"); 2970 break; 2971 case CMD_ADD: 2972 puts_tr("add - Add a new security association (SA)"); 2973 break; 2974 case CMD_DELETE: 2975 puts_tr("delete - Delete an SA"); 2976 break; 2977 case CMD_GET: 2978 puts_tr("get - Display an SA"); 2979 break; 2980 case CMD_FLUSH: 2981 puts_tr("flush - Delete all SAs"); 2982 break; 2983 case CMD_DUMP: 2984 puts_tr("dump - Display all SAs"); 2985 break; 2986 case CMD_MONITOR: 2987 puts_tr("monitor - Monitor all PF_KEY reply messages."); 2988 break; 2989 case CMD_PMONITOR: 2990 puts_tr( 2991 "pmonitor, passive_monitor - Monitor PF_KEY messages that"); 2992 puts_tr( 2993 " reply to all PF_KEY sockets."); 2994 break; 2995 2996 case CMD_QUIT: 2997 puts_tr("quit, exit - Exit the program"); 2998 break; 2999 case CMD_SAVE: 3000 puts_tr("save - Saves all SAs to a file"); 3001 break; 3002 case CMD_HELP: 3003 puts_tr("help - Display list of commands"); 3004 puts_tr("help <cmd> - Display help for command"); 3005 puts_tr("help attr - Display possible SA attributes"); 3006 break; 3007 default: 3008 (void) printf(gettext("%s: Unknown command\n"), cmds); 3009 break; 3010 } 3011 } 3012 3013 3014 static void 3015 dohelp(char *cmds) 3016 { 3017 if (cmds != NULL) { 3018 dohelpcmd(cmds); 3019 return; 3020 } 3021 puts_tr("Commands"); 3022 puts_tr("--------"); 3023 puts_tr("?, help - Display this list"); 3024 puts_tr("help <cmd> - Display help for command"); 3025 puts_tr("help attr - Display possible SA attributes"); 3026 puts_tr("quit, exit - Exit the program"); 3027 puts_tr("monitor - Monitor all PF_KEY reply messages."); 3028 puts_tr("pmonitor, passive_monitor - Monitor PF_KEY messages that"); 3029 puts_tr(" reply to all PF_KEY sockets."); 3030 puts_tr(""); 3031 puts_tr("The following commands are of the form:"); 3032 puts_tr(" <command> {SA type} {attribute value}*"); 3033 puts_tr(""); 3034 puts_tr("add (interactive only) - Add a new security association (SA)"); 3035 puts_tr("update (interactive only) - Update an existing SA"); 3036 puts_tr("delete - Delete an SA"); 3037 puts_tr("get - Display an SA"); 3038 puts_tr("flush - Delete all SAs"); 3039 puts_tr("dump - Display all SAs"); 3040 puts_tr("save - Saves all SAs to a file"); 3041 } 3042 3043 /* 3044 * "Parse" a command line from argv. 3045 */ 3046 static void 3047 parseit(int argc, char *argv[], char *ebuf, boolean_t read_cmdfile) 3048 { 3049 int cmd, satype; 3050 char *ep = NULL; 3051 3052 if (argc == 0) 3053 return; 3054 cmd = parsecmd(*argv++); 3055 3056 /* 3057 * Some commands loop forever and should only be run from the command 3058 * line, they should never be run from a command file as this may 3059 * be used at boot time. 3060 */ 3061 switch (cmd) { 3062 case CMD_HELP: 3063 if (read_cmdfile) 3064 ERROR(ep, ebuf, gettext("Help not appropriate in " 3065 "config file.")); 3066 else 3067 dohelp(*argv); 3068 return; 3069 case CMD_MONITOR: 3070 if (read_cmdfile) 3071 ERROR(ep, ebuf, gettext("Monitor not appropriate in " 3072 "config file.")); 3073 else 3074 domonitor(B_FALSE); 3075 break; 3076 case CMD_PMONITOR: 3077 if (read_cmdfile) 3078 ERROR(ep, ebuf, gettext("Monitor not appropriate in " 3079 "config file.")); 3080 else 3081 domonitor(B_TRUE); 3082 break; 3083 case CMD_QUIT: 3084 EXIT_OK(NULL); 3085 } 3086 3087 handle_errors(ep, ebuf, B_FALSE, B_FALSE); 3088 3089 satype = parsesatype(*argv, ebuf); 3090 3091 if (satype != SADB_SATYPE_UNSPEC) { 3092 argv++; 3093 } else { 3094 /* 3095 * You must specify either "all" or a specific SA type 3096 * for the "save" command. 3097 */ 3098 if (cmd == CMD_SAVE) 3099 if (*argv == NULL) { 3100 FATAL(ep, ebuf, gettext( 3101 "Must specify a specific " 3102 "SA type for save.\n")); 3103 } else { 3104 argv++; 3105 } 3106 } 3107 3108 switch (cmd) { 3109 case CMD_FLUSH: 3110 if (!cflag) 3111 doflush(satype); 3112 /* 3113 * If this was called because of an entry in a cmd file 3114 * then this action needs to be counted to prevent 3115 * do_interactive() treating this as an error. 3116 */ 3117 lines_added++; 3118 break; 3119 case CMD_ADD: 3120 case CMD_UPDATE: 3121 /* 3122 * NOTE: Shouldn't allow ADDs or UPDATEs with keying material 3123 * from the command line. 3124 */ 3125 if (!interactive) { 3126 errx(1, gettext( 3127 "can't do ADD or UPDATE from the command line.\n")); 3128 } 3129 if (satype == SADB_SATYPE_UNSPEC) { 3130 FATAL(ep, ebuf, gettext( 3131 "Must specify a specific SA type.")); 3132 /* NOTREACHED */ 3133 } 3134 /* Parse for extensions, including keying material. */ 3135 doaddup(cmd, satype, argv, ebuf); 3136 break; 3137 case CMD_DELETE: 3138 case CMD_GET: 3139 if (satype == SADB_SATYPE_UNSPEC) { 3140 FATAL(ep, ebuf, gettext( 3141 "Must specify a single SA type.")); 3142 /* NOTREACHED */ 3143 } 3144 /* Parse for bare minimum to locate an SA. */ 3145 dodelget(cmd, satype, argv, ebuf); 3146 break; 3147 case CMD_DUMP: 3148 if (read_cmdfile) 3149 ERROR(ep, ebuf, gettext("Dump not appropriate in " 3150 "config file.")); 3151 else 3152 dodump(satype, NULL); 3153 break; 3154 case CMD_SAVE: 3155 if (read_cmdfile) { 3156 ERROR(ep, ebuf, gettext("Save not appropriate in " 3157 "config file.")); 3158 } else { 3159 mask_signals(B_FALSE); /* Mask signals */ 3160 dodump(satype, opensavefile(argv[0])); 3161 mask_signals(B_TRUE); /* Unmask signals */ 3162 } 3163 break; 3164 default: 3165 warnx(gettext("Unknown command (%s).\n"), 3166 *(argv - ((satype == SADB_SATYPE_UNSPEC) ? 1 : 2))); 3167 usage(); 3168 } 3169 handle_errors(ep, ebuf, B_FALSE, B_FALSE); 3170 } 3171 3172 int 3173 main(int argc, char *argv[]) 3174 { 3175 int ch; 3176 FILE *infile = stdin, *savefile; 3177 boolean_t dosave = B_FALSE, readfile = B_FALSE; 3178 char *configfile = NULL; 3179 3180 (void) setlocale(LC_ALL, ""); 3181 #if !defined(TEXT_DOMAIN) 3182 #define TEXT_DOMAIN "SYS_TEST" 3183 #endif 3184 (void) textdomain(TEXT_DOMAIN); 3185 3186 /* 3187 * Check to see if the command is being run from smf(5). 3188 */ 3189 my_fmri = getenv("SMF_FMRI"); 3190 3191 openlog("ipseckey", LOG_CONS, LOG_AUTH); 3192 if (getuid() != 0) { 3193 errx(1, "Insufficient privileges to run ipseckey."); 3194 } 3195 3196 /* umask me to paranoid, I only want to create files read-only */ 3197 (void) umask((mode_t)00377); 3198 3199 while ((ch = getopt(argc, argv, "pnvf:s:c:")) != EOF) 3200 switch (ch) { 3201 case 'p': 3202 pflag = B_TRUE; 3203 break; 3204 case 'n': 3205 nflag = B_TRUE; 3206 break; 3207 case 'v': 3208 vflag = B_TRUE; 3209 break; 3210 case 'c': 3211 cflag = B_TRUE; 3212 /* FALLTHRU */ 3213 case 'f': 3214 if (dosave) 3215 usage(); 3216 infile = fopen(optarg, "r"); 3217 if (infile == NULL) { 3218 EXIT_BADCONFIG2("Unable to open configuration " 3219 "file: %s\n", optarg); 3220 } 3221 configfile = strdup(optarg); 3222 readfile = B_TRUE; 3223 break; 3224 case 's': 3225 if (readfile) 3226 usage(); 3227 dosave = B_TRUE; 3228 savefile = opensavefile(optarg); 3229 break; 3230 default: 3231 usage(); 3232 } 3233 3234 argc -= optind; 3235 argv += optind; 3236 3237 mypid = getpid(); 3238 3239 keysock = socket(PF_KEY, SOCK_RAW, PF_KEY_V2); 3240 3241 if (keysock == -1) { 3242 if (errno == EPERM) { 3243 EXIT_BADPERM("Insufficient privileges to open " 3244 "PF_KEY socket.\n"); 3245 } else { 3246 /* some other reason */ 3247 EXIT_FATAL("Opening PF_KEY socket"); 3248 } 3249 } 3250 3251 if (dosave) { 3252 mask_signals(B_FALSE); /* Mask signals */ 3253 dodump(SADB_SATYPE_UNSPEC, savefile); 3254 mask_signals(B_TRUE); /* Unmask signals */ 3255 EXIT_OK(NULL); 3256 } 3257 3258 /* 3259 * When run from smf(5) flush any existing SA's first 3260 * otherwise you will end up in maintenance mode. 3261 */ 3262 if ((my_fmri != NULL) && readfile) { 3263 (void) fprintf(stdout, gettext( 3264 "Flushing existing SA's before adding new SA's\n")); 3265 (void) fflush(stdout); 3266 doflush(SADB_SATYPE_UNSPEC); 3267 } 3268 if (infile != stdin || *argv == NULL) { 3269 /* Go into interactive mode here. */ 3270 do_interactive(infile, configfile, "ipseckey> ", my_fmri, 3271 parseit); 3272 } 3273 parseit(argc, argv, NULL, B_FALSE); 3274 3275 return (0); 3276 } 3277