1 /*- 2 * Copyright (c) 1996 - 2001 Brian Somers <brian@Awfulhak.org> 3 * based on work by Toshiharu OHNO <tony-o@iij.ad.jp> 4 * Internet Initiative Japan, Inc (IIJ) 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 * 28 * $FreeBSD$ 29 */ 30 31 #include <sys/param.h> 32 #include <sys/socket.h> 33 #include <net/if_types.h> 34 #include <net/route.h> 35 #include <net/if.h> 36 #include <netinet/in.h> 37 #include <arpa/inet.h> 38 #include <net/if_dl.h> 39 #include <netinet/in_systm.h> 40 #include <netinet/ip.h> 41 #include <sys/un.h> 42 #include <netdb.h> 43 44 #include <errno.h> 45 #include <stdio.h> 46 #include <stdlib.h> 47 #include <string.h> 48 #include <sys/sysctl.h> 49 #include <termios.h> 50 #include <unistd.h> 51 52 #include "layer.h" 53 #include "defs.h" 54 #include "command.h" 55 #include "mbuf.h" 56 #include "log.h" 57 #include "iplist.h" 58 #include "timer.h" 59 #include "throughput.h" 60 #include "lqr.h" 61 #include "hdlc.h" 62 #include "fsm.h" 63 #include "lcp.h" 64 #include "ccp.h" 65 #include "link.h" 66 #include "slcompress.h" 67 #include "ncpaddr.h" 68 #include "ip.h" 69 #include "ipcp.h" 70 #include "filter.h" 71 #include "descriptor.h" 72 #include "mp.h" 73 #ifndef NORADIUS 74 #include "radius.h" 75 #endif 76 #include "ipv6cp.h" 77 #include "ncp.h" 78 #include "bundle.h" 79 #include "route.h" 80 #include "prompt.h" 81 #include "iface.h" 82 #include "id.h" 83 84 85 static void 86 p_sockaddr(struct prompt *prompt, struct sockaddr *phost, 87 struct sockaddr *pmask, int width) 88 { 89 struct ncprange range; 90 char buf[29]; 91 struct sockaddr_dl *dl = (struct sockaddr_dl *)phost; 92 93 if (log_IsKept(LogDEBUG)) { 94 char tmp[50]; 95 96 log_Printf(LogDEBUG, "Found the following sockaddr:\n"); 97 log_Printf(LogDEBUG, " Family %d, len %d\n", 98 (int)phost->sa_family, (int)phost->sa_len); 99 inet_ntop(phost->sa_family, phost->sa_data, tmp, sizeof tmp); 100 log_Printf(LogDEBUG, " Addr %s\n", tmp); 101 if (pmask) { 102 inet_ntop(pmask->sa_family, pmask->sa_data, tmp, sizeof tmp); 103 log_Printf(LogDEBUG, " Mask %s\n", tmp); 104 } 105 } 106 107 switch (phost->sa_family) { 108 case AF_INET: 109 #ifndef NOINET6 110 case AF_INET6: 111 #endif 112 ncprange_setsa(&range, phost, pmask); 113 if (ncprange_isdefault(&range)) 114 prompt_Printf(prompt, "%-*s ", width - 1, "default"); 115 else 116 prompt_Printf(prompt, "%-*s ", width - 1, ncprange_ntoa(&range)); 117 return; 118 119 case AF_LINK: 120 if (dl->sdl_nlen) 121 snprintf(buf, sizeof buf, "%.*s", dl->sdl_nlen, dl->sdl_data); 122 else if (dl->sdl_alen) { 123 if (dl->sdl_type == IFT_ETHER) { 124 if (dl->sdl_alen < sizeof buf / 3) { 125 int f; 126 u_char *MAC; 127 128 MAC = (u_char *)dl->sdl_data + dl->sdl_nlen; 129 for (f = 0; f < dl->sdl_alen; f++) 130 sprintf(buf+f*3, "%02x:", MAC[f]); 131 buf[f*3-1] = '\0'; 132 } else 133 strcpy(buf, "??:??:??:??:??:??"); 134 } else 135 sprintf(buf, "<IFT type %d>", dl->sdl_type); 136 } else if (dl->sdl_slen) 137 sprintf(buf, "<slen %d?>", dl->sdl_slen); 138 else 139 sprintf(buf, "link#%d", dl->sdl_index); 140 break; 141 142 default: 143 sprintf(buf, "<AF type %d>", phost->sa_family); 144 break; 145 } 146 147 prompt_Printf(prompt, "%-*s ", width-1, buf); 148 } 149 150 static struct bits { 151 u_int32_t b_mask; 152 char b_val; 153 } bits[] = { 154 { RTF_UP, 'U' }, 155 { RTF_GATEWAY, 'G' }, 156 { RTF_HOST, 'H' }, 157 { RTF_REJECT, 'R' }, 158 { RTF_DYNAMIC, 'D' }, 159 { RTF_MODIFIED, 'M' }, 160 { RTF_DONE, 'd' }, 161 { RTF_CLONING, 'C' }, 162 { RTF_XRESOLVE, 'X' }, 163 { RTF_LLINFO, 'L' }, 164 { RTF_STATIC, 'S' }, 165 { RTF_PROTO1, '1' }, 166 { RTF_PROTO2, '2' }, 167 { RTF_BLACKHOLE, 'B' }, 168 #ifdef RTF_WASCLONED 169 { RTF_WASCLONED, 'W' }, 170 #endif 171 #ifdef RTF_PRCLONING 172 { RTF_PRCLONING, 'c' }, 173 #endif 174 #ifdef RTF_PROTO3 175 { RTF_PROTO3, '3' }, 176 #endif 177 #ifdef RTF_BROADCAST 178 { RTF_BROADCAST, 'b' }, 179 #endif 180 { 0, '\0' } 181 }; 182 183 #ifndef RTF_WASCLONED 184 #define RTF_WASCLONED (0) 185 #endif 186 187 static void 188 p_flags(struct prompt *prompt, u_int32_t f, int max) 189 { 190 char name[33], *flags; 191 register struct bits *p = bits; 192 193 if (max > sizeof name - 1) 194 max = sizeof name - 1; 195 196 for (flags = name; p->b_mask && flags - name < max; p++) 197 if (p->b_mask & f) 198 *flags++ = p->b_val; 199 *flags = '\0'; 200 prompt_Printf(prompt, "%-*.*s", max, max, name); 201 } 202 203 const char * 204 Index2Nam(int idx) 205 { 206 /* 207 * XXX: Maybe we should select() on the routing socket so that we can 208 * notice interfaces that come & go (PCCARD support). 209 * Or we could even support a signal that resets these so that 210 * the PCCARD insert/remove events can signal ppp. 211 */ 212 static char **ifs; /* Figure these out once */ 213 static int nifs, debug_done; /* Figure out how many once, and debug once */ 214 215 if (idx > nifs || (idx > 0 && ifs[idx-1] == NULL)) { 216 int mib[6], have, had; 217 size_t needed; 218 char *buf, *ptr, *end; 219 struct sockaddr_dl *dl; 220 struct if_msghdr *ifm; 221 222 if (ifs) { 223 free(ifs); 224 ifs = NULL; 225 nifs = 0; 226 } 227 debug_done = 0; 228 229 mib[0] = CTL_NET; 230 mib[1] = PF_ROUTE; 231 mib[2] = 0; 232 mib[3] = 0; 233 mib[4] = NET_RT_IFLIST; 234 mib[5] = 0; 235 236 if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0) { 237 log_Printf(LogERROR, "Index2Nam: sysctl: estimate: %s\n", 238 strerror(errno)); 239 return NumStr(idx, NULL, 0); 240 } 241 if ((buf = malloc(needed)) == NULL) 242 return NumStr(idx, NULL, 0); 243 if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0) { 244 free(buf); 245 return NumStr(idx, NULL, 0); 246 } 247 end = buf + needed; 248 249 have = 0; 250 for (ptr = buf; ptr < end; ptr += ifm->ifm_msglen) { 251 ifm = (struct if_msghdr *)ptr; 252 if (ifm->ifm_type != RTM_IFINFO) 253 continue; 254 dl = (struct sockaddr_dl *)(ifm + 1); 255 if (ifm->ifm_index > 0) { 256 if (ifm->ifm_index > have) { 257 char **newifs; 258 259 had = have; 260 have = ifm->ifm_index + 5; 261 if (had) 262 newifs = (char **)realloc(ifs, sizeof(char *) * have); 263 else 264 newifs = (char **)malloc(sizeof(char *) * have); 265 if (!newifs) { 266 log_Printf(LogDEBUG, "Index2Nam: %s\n", strerror(errno)); 267 nifs = 0; 268 if (ifs) { 269 free(ifs); 270 ifs = NULL; 271 } 272 free(buf); 273 return NumStr(idx, NULL, 0); 274 } 275 ifs = newifs; 276 memset(ifs + had, '\0', sizeof(char *) * (have - had)); 277 } 278 if (ifs[ifm->ifm_index-1] == NULL) { 279 ifs[ifm->ifm_index-1] = (char *)malloc(dl->sdl_nlen+1); 280 memcpy(ifs[ifm->ifm_index-1], dl->sdl_data, dl->sdl_nlen); 281 ifs[ifm->ifm_index-1][dl->sdl_nlen] = '\0'; 282 if (nifs < ifm->ifm_index) 283 nifs = ifm->ifm_index; 284 } 285 } else if (log_IsKept(LogDEBUG)) 286 log_Printf(LogDEBUG, "Skipping out-of-range interface %d!\n", 287 ifm->ifm_index); 288 } 289 free(buf); 290 } 291 292 if (log_IsKept(LogDEBUG) && !debug_done) { 293 int f; 294 295 log_Printf(LogDEBUG, "Found the following interfaces:\n"); 296 for (f = 0; f < nifs; f++) 297 if (ifs[f] != NULL) 298 log_Printf(LogDEBUG, " Index %d, name \"%s\"\n", f+1, ifs[f]); 299 debug_done = 1; 300 } 301 302 if (idx < 1 || idx > nifs || ifs[idx-1] == NULL) 303 return NumStr(idx, NULL, 0); 304 305 return ifs[idx-1]; 306 } 307 308 void 309 route_ParseHdr(struct rt_msghdr *rtm, struct sockaddr *sa[RTAX_MAX]) 310 { 311 char *wp; 312 int rtax; 313 314 wp = (char *)(rtm + 1); 315 316 for (rtax = 0; rtax < RTAX_MAX; rtax++) 317 if (rtm->rtm_addrs & (1 << rtax)) { 318 sa[rtax] = (struct sockaddr *)wp; 319 wp += ROUNDUP(sa[rtax]->sa_len); 320 } else 321 sa[rtax] = NULL; 322 } 323 324 int 325 route_Show(struct cmdargs const *arg) 326 { 327 struct rt_msghdr *rtm; 328 struct sockaddr *sa[RTAX_MAX]; 329 char *sp, *ep, *cp; 330 size_t needed; 331 int mib[6]; 332 333 mib[0] = CTL_NET; 334 mib[1] = PF_ROUTE; 335 mib[2] = 0; 336 mib[3] = 0; 337 mib[4] = NET_RT_DUMP; 338 mib[5] = 0; 339 if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0) { 340 log_Printf(LogERROR, "route_Show: sysctl: estimate: %s\n", strerror(errno)); 341 return (1); 342 } 343 sp = malloc(needed); 344 if (sp == NULL) 345 return (1); 346 if (sysctl(mib, 6, sp, &needed, NULL, 0) < 0) { 347 log_Printf(LogERROR, "route_Show: sysctl: getroute: %s\n", strerror(errno)); 348 free(sp); 349 return (1); 350 } 351 ep = sp + needed; 352 353 prompt_Printf(arg->prompt, "%-20s%-20sFlags Netif\n", 354 "Destination", "Gateway"); 355 for (cp = sp; cp < ep; cp += rtm->rtm_msglen) { 356 rtm = (struct rt_msghdr *)cp; 357 358 route_ParseHdr(rtm, sa); 359 360 if (sa[RTAX_DST] && sa[RTAX_GATEWAY]) { 361 p_sockaddr(arg->prompt, sa[RTAX_DST], sa[RTAX_NETMASK], 20); 362 p_sockaddr(arg->prompt, sa[RTAX_GATEWAY], NULL, 20); 363 364 p_flags(arg->prompt, rtm->rtm_flags, 6); 365 prompt_Printf(arg->prompt, " %s\n", Index2Nam(rtm->rtm_index)); 366 } else 367 prompt_Printf(arg->prompt, "<can't parse routing entry>\n"); 368 } 369 free(sp); 370 return 0; 371 } 372 373 /* 374 * Delete routes associated with our interface 375 */ 376 void 377 route_IfDelete(struct bundle *bundle, int all) 378 { 379 struct rt_msghdr *rtm; 380 struct sockaddr *sa[RTAX_MAX]; 381 struct ncprange range; 382 int pass; 383 size_t needed; 384 char *sp, *cp, *ep; 385 int mib[6]; 386 387 log_Printf(LogDEBUG, "route_IfDelete (%d)\n", bundle->iface->index); 388 389 mib[0] = CTL_NET; 390 mib[1] = PF_ROUTE; 391 mib[2] = 0; 392 mib[3] = 0; 393 mib[4] = NET_RT_DUMP; 394 mib[5] = 0; 395 if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0) { 396 log_Printf(LogERROR, "route_IfDelete: sysctl: estimate: %s\n", 397 strerror(errno)); 398 return; 399 } 400 401 sp = malloc(needed); 402 if (sp == NULL) 403 return; 404 405 if (sysctl(mib, 6, sp, &needed, NULL, 0) < 0) { 406 log_Printf(LogERROR, "route_IfDelete: sysctl: getroute: %s\n", 407 strerror(errno)); 408 free(sp); 409 return; 410 } 411 ep = sp + needed; 412 413 for (pass = 0; pass < 2; pass++) { 414 /* 415 * We do 2 passes. The first deletes all cloned routes. The second 416 * deletes all non-cloned routes. This is done to avoid 417 * potential errors from trying to delete route X after route Y where 418 * route X was cloned from route Y (and is no longer there 'cos it 419 * may have gone with route Y). 420 */ 421 if (RTF_WASCLONED == 0 && pass == 0) 422 /* So we can't tell ! */ 423 continue; 424 for (cp = sp; cp < ep; cp += rtm->rtm_msglen) { 425 rtm = (struct rt_msghdr *)cp; 426 route_ParseHdr(rtm, sa); 427 if (rtm->rtm_index == bundle->iface->index && 428 sa[RTAX_DST] && sa[RTAX_GATEWAY] && 429 (sa[RTAX_DST]->sa_family == AF_INET 430 #ifndef NOINET6 431 || sa[RTAX_DST]->sa_family == AF_INET6 432 #endif 433 ) && 434 (all || (rtm->rtm_flags & RTF_GATEWAY))) { 435 if (log_IsKept(LogDEBUG)) { 436 char gwstr[41]; 437 struct ncpaddr gw; 438 ncprange_setsa(&range, sa[RTAX_DST], sa[RTAX_NETMASK]); 439 ncpaddr_setsa(&gw, sa[RTAX_GATEWAY]); 440 snprintf(gwstr, sizeof gwstr, "%s", ncpaddr_ntoa(&gw)); 441 log_Printf(LogDEBUG, "Found %s %s\n", ncprange_ntoa(&range), gwstr); 442 } 443 if (sa[RTAX_GATEWAY]->sa_family == AF_INET || 444 #ifndef NOINET6 445 sa[RTAX_GATEWAY]->sa_family == AF_INET6 || 446 #endif 447 sa[RTAX_GATEWAY]->sa_family == AF_LINK) { 448 if ((pass == 0 && (rtm->rtm_flags & RTF_WASCLONED)) || 449 (pass == 1 && !(rtm->rtm_flags & RTF_WASCLONED))) { 450 ncprange_setsa(&range, sa[RTAX_DST], sa[RTAX_NETMASK]); 451 rt_Set(bundle, RTM_DELETE, &range, NULL, 0, 0); 452 } else 453 log_Printf(LogDEBUG, "route_IfDelete: Skip it (pass %d)\n", pass); 454 } else 455 log_Printf(LogDEBUG, 456 "route_IfDelete: Can't remove routes for family %d\n", 457 sa[RTAX_GATEWAY]->sa_family); 458 } 459 } 460 } 461 free(sp); 462 } 463 464 465 /* 466 * Update the MTU on all routes for the given interface 467 */ 468 void 469 route_UpdateMTU(struct bundle *bundle) 470 { 471 struct rt_msghdr *rtm; 472 struct sockaddr *sa[RTAX_MAX]; 473 struct ncprange dst; 474 size_t needed; 475 char *sp, *cp, *ep; 476 int mib[6]; 477 478 log_Printf(LogDEBUG, "route_UpdateMTU (%d)\n", bundle->iface->index); 479 480 mib[0] = CTL_NET; 481 mib[1] = PF_ROUTE; 482 mib[2] = 0; 483 mib[3] = 0; 484 mib[4] = NET_RT_DUMP; 485 mib[5] = 0; 486 if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0) { 487 log_Printf(LogERROR, "route_IfDelete: sysctl: estimate: %s\n", 488 strerror(errno)); 489 return; 490 } 491 492 sp = malloc(needed); 493 if (sp == NULL) 494 return; 495 496 if (sysctl(mib, 6, sp, &needed, NULL, 0) < 0) { 497 log_Printf(LogERROR, "route_IfDelete: sysctl: getroute: %s\n", 498 strerror(errno)); 499 free(sp); 500 return; 501 } 502 ep = sp + needed; 503 504 for (cp = sp; cp < ep; cp += rtm->rtm_msglen) { 505 rtm = (struct rt_msghdr *)cp; 506 route_ParseHdr(rtm, sa); 507 if (sa[RTAX_DST] && (sa[RTAX_DST]->sa_family == AF_INET 508 #ifndef NOINET6 509 || sa[RTAX_DST]->sa_family == AF_INET6 510 #endif 511 ) && 512 sa[RTAX_GATEWAY] && rtm->rtm_index == bundle->iface->index) { 513 if (log_IsKept(LogTCPIP)) { 514 ncprange_setsa(&dst, sa[RTAX_DST], sa[RTAX_NETMASK]); 515 log_Printf(LogTCPIP, "route_UpdateMTU: Netif: %d (%s), dst %s," 516 " mtu %d\n", rtm->rtm_index, Index2Nam(rtm->rtm_index), 517 ncprange_ntoa(&dst), bundle->iface->mtu); 518 } 519 rt_Update(bundle, sa[RTAX_DST], sa[RTAX_GATEWAY], sa[RTAX_NETMASK]); 520 } 521 } 522 523 free(sp); 524 } 525 526 int 527 GetIfIndex(char *name) 528 { 529 int idx; 530 const char *got; 531 532 idx = 1; 533 while (strcmp(got = Index2Nam(idx), "???")) 534 if (!strcmp(got, name)) 535 return idx; 536 else 537 idx++; 538 return -1; 539 } 540 541 void 542 route_Change(struct bundle *bundle, struct sticky_route *r, 543 const struct ncpaddr *me, const struct ncpaddr *peer) 544 { 545 struct ncpaddr dst; 546 547 for (; r; r = r->next) { 548 ncprange_getaddr(&r->dst, &dst); 549 if (ncpaddr_family(me) == AF_INET) { 550 if ((r->type & ROUTE_DSTMYADDR) && !ncpaddr_equal(&dst, me)) { 551 rt_Set(bundle, RTM_DELETE, &r->dst, NULL, 1, 0); 552 ncprange_sethost(&r->dst, me); 553 if (r->type & ROUTE_GWHISADDR) 554 ncpaddr_copy(&r->gw, peer); 555 } else if ((r->type & ROUTE_DSTHISADDR) && !ncpaddr_equal(&dst, peer)) { 556 rt_Set(bundle, RTM_DELETE, &r->dst, NULL, 1, 0); 557 ncprange_sethost(&r->dst, peer); 558 if (r->type & ROUTE_GWHISADDR) 559 ncpaddr_copy(&r->gw, peer); 560 } else if ((r->type & ROUTE_DSTDNS0) && !ncpaddr_equal(&dst, peer)) { 561 if (bundle->ncp.ipcp.ns.dns[0].s_addr == INADDR_NONE) 562 continue; 563 rt_Set(bundle, RTM_DELETE, &r->dst, NULL, 1, 0); 564 if (r->type & ROUTE_GWHISADDR) 565 ncpaddr_copy(&r->gw, peer); 566 } else if ((r->type & ROUTE_DSTDNS1) && !ncpaddr_equal(&dst, peer)) { 567 if (bundle->ncp.ipcp.ns.dns[1].s_addr == INADDR_NONE) 568 continue; 569 rt_Set(bundle, RTM_DELETE, &r->dst, NULL, 1, 0); 570 if (r->type & ROUTE_GWHISADDR) 571 ncpaddr_copy(&r->gw, peer); 572 } else if ((r->type & ROUTE_GWHISADDR) && !ncpaddr_equal(&r->gw, peer)) 573 ncpaddr_copy(&r->gw, peer); 574 #ifndef NOINET6 575 } else if (ncpaddr_family(me) == AF_INET6) { 576 if ((r->type & ROUTE_DSTMYADDR6) && !ncpaddr_equal(&dst, me)) { 577 rt_Set(bundle, RTM_DELETE, &r->dst, NULL, 1, 0); 578 ncprange_sethost(&r->dst, me); 579 if (r->type & ROUTE_GWHISADDR) 580 ncpaddr_copy(&r->gw, peer); 581 } else if ((r->type & ROUTE_DSTHISADDR6) && !ncpaddr_equal(&dst, peer)) { 582 rt_Set(bundle, RTM_DELETE, &r->dst, NULL, 1, 0); 583 ncprange_sethost(&r->dst, peer); 584 if (r->type & ROUTE_GWHISADDR) 585 ncpaddr_copy(&r->gw, peer); 586 } else if ((r->type & ROUTE_GWHISADDR6) && !ncpaddr_equal(&r->gw, peer)) 587 ncpaddr_copy(&r->gw, peer); 588 #endif 589 } 590 rt_Set(bundle, RTM_ADD, &r->dst, &r->gw, 1, 0); 591 } 592 } 593 594 void 595 route_Add(struct sticky_route **rp, int type, const struct ncprange *dst, 596 const struct ncpaddr *gw) 597 { 598 struct sticky_route *r; 599 int dsttype = type & ROUTE_DSTANY; 600 601 r = NULL; 602 while (*rp) { 603 if ((dsttype && dsttype == ((*rp)->type & ROUTE_DSTANY)) || 604 (!dsttype && ncprange_equal(&(*rp)->dst, dst))) { 605 /* Oops, we already have this route - unlink it */ 606 free(r); /* impossible really */ 607 r = *rp; 608 *rp = r->next; 609 } else 610 rp = &(*rp)->next; 611 } 612 613 if (!r) 614 r = (struct sticky_route *)malloc(sizeof(struct sticky_route)); 615 r->type = type; 616 r->next = NULL; 617 ncprange_copy(&r->dst, dst); 618 ncpaddr_copy(&r->gw, gw); 619 *rp = r; 620 } 621 622 void 623 route_Delete(struct sticky_route **rp, int type, const struct ncprange *dst) 624 { 625 struct sticky_route *r; 626 int dsttype = type & ROUTE_DSTANY; 627 628 for (; *rp; rp = &(*rp)->next) { 629 if ((dsttype && dsttype == ((*rp)->type & ROUTE_DSTANY)) || 630 (!dsttype && ncprange_equal(dst, &(*rp)->dst))) { 631 r = *rp; 632 *rp = r->next; 633 free(r); 634 break; 635 } 636 } 637 } 638 639 void 640 route_DeleteAll(struct sticky_route **rp) 641 { 642 struct sticky_route *r, *rn; 643 644 for (r = *rp; r; r = rn) { 645 rn = r->next; 646 free(r); 647 } 648 *rp = NULL; 649 } 650 651 void 652 route_ShowSticky(struct prompt *p, struct sticky_route *r, const char *tag, 653 int indent) 654 { 655 int tlen = strlen(tag); 656 657 if (tlen + 2 > indent) 658 prompt_Printf(p, "%s:\n%*s", tag, indent, ""); 659 else 660 prompt_Printf(p, "%s:%*s", tag, indent - tlen - 1, ""); 661 662 for (; r; r = r->next) { 663 prompt_Printf(p, "%*sadd ", tlen ? 0 : indent, ""); 664 tlen = 0; 665 if (r->type & ROUTE_DSTMYADDR) 666 prompt_Printf(p, "MYADDR"); 667 else if (r->type & ROUTE_DSTMYADDR6) 668 prompt_Printf(p, "MYADDR6"); 669 else if (r->type & ROUTE_DSTHISADDR) 670 prompt_Printf(p, "HISADDR"); 671 else if (r->type & ROUTE_DSTHISADDR6) 672 prompt_Printf(p, "HISADDR6"); 673 else if (r->type & ROUTE_DSTDNS0) 674 prompt_Printf(p, "DNS0"); 675 else if (r->type & ROUTE_DSTDNS1) 676 prompt_Printf(p, "DNS1"); 677 else if (ncprange_isdefault(&r->dst)) 678 prompt_Printf(p, "default"); 679 else 680 prompt_Printf(p, "%s", ncprange_ntoa(&r->dst)); 681 682 if (r->type & ROUTE_GWHISADDR) 683 prompt_Printf(p, " HISADDR\n"); 684 else if (r->type & ROUTE_GWHISADDR6) 685 prompt_Printf(p, " HISADDR6\n"); 686 else 687 prompt_Printf(p, " %s\n", ncpaddr_ntoa(&r->gw)); 688 } 689 } 690 691 struct rtmsg { 692 struct rt_msghdr m_rtm; 693 char m_space[256]; 694 }; 695 696 int 697 rt_Set(struct bundle *bundle, int cmd, const struct ncprange *dst, 698 const struct ncpaddr *gw, int bang, int quiet) 699 { 700 struct rtmsg rtmes; 701 int domask, s, nb, wb, width; 702 char *cp; 703 const char *cmdstr; 704 struct sockaddr_storage sadst, samask, sagw; 705 int result = 1; 706 707 if (bang) 708 cmdstr = (cmd == RTM_ADD ? "Add!" : "Delete!"); 709 else 710 cmdstr = (cmd == RTM_ADD ? "Add" : "Delete"); 711 s = ID0socket(PF_ROUTE, SOCK_RAW, 0); 712 if (s < 0) { 713 log_Printf(LogERROR, "rt_Set: socket(): %s\n", strerror(errno)); 714 return result; 715 } 716 memset(&rtmes, '\0', sizeof rtmes); 717 rtmes.m_rtm.rtm_version = RTM_VERSION; 718 rtmes.m_rtm.rtm_type = cmd; 719 rtmes.m_rtm.rtm_addrs = RTA_DST; 720 rtmes.m_rtm.rtm_seq = ++bundle->routing_seq; 721 rtmes.m_rtm.rtm_pid = getpid(); 722 rtmes.m_rtm.rtm_flags = RTF_UP | RTF_GATEWAY | RTF_STATIC; 723 724 if (cmd == RTM_ADD) { 725 if (bundle->ncp.cfg.sendpipe > 0) { 726 rtmes.m_rtm.rtm_rmx.rmx_sendpipe = bundle->ncp.cfg.sendpipe; 727 rtmes.m_rtm.rtm_inits |= RTV_SPIPE; 728 } 729 if (bundle->ncp.cfg.recvpipe > 0) { 730 rtmes.m_rtm.rtm_rmx.rmx_recvpipe = bundle->ncp.cfg.recvpipe; 731 rtmes.m_rtm.rtm_inits |= RTV_RPIPE; 732 } 733 } 734 735 ncprange_getsa(dst, &sadst, &samask); 736 737 cp = rtmes.m_space; 738 memcpy(cp, &sadst, sadst.ss_len); 739 cp += sadst.ss_len; 740 if (cmd == RTM_ADD) { 741 if (gw == NULL) { 742 log_Printf(LogERROR, "rt_Set: Program error\n"); 743 close(s); 744 return result; 745 } 746 ncpaddr_getsa(gw, &sagw); 747 if (ncpaddr_isdefault(gw)) { 748 if (!quiet) 749 log_Printf(LogERROR, "rt_Set: Cannot add a route with" 750 " gateway 0.0.0.0\n"); 751 close(s); 752 return result; 753 } else { 754 memcpy(cp, &sagw, sagw.ss_len); 755 cp += sagw.ss_len; 756 rtmes.m_rtm.rtm_addrs |= RTA_GATEWAY; 757 } 758 } 759 760 domask = 1; 761 if (ncprange_family(dst) == AF_INET) { 762 ncprange_getwidth(dst, &width); 763 if (width == 32) 764 domask = 0; 765 } 766 if (domask) { 767 memcpy(cp, &samask, samask.ss_len); 768 cp += samask.ss_len; 769 rtmes.m_rtm.rtm_addrs |= RTA_NETMASK; 770 } 771 772 nb = cp - (char *)&rtmes; 773 rtmes.m_rtm.rtm_msglen = nb; 774 wb = ID0write(s, &rtmes, nb); 775 if (wb < 0) { 776 log_Printf(LogTCPIP, "rt_Set failure:\n"); 777 log_Printf(LogTCPIP, "rt_Set: Cmd = %s\n", cmdstr); 778 log_Printf(LogTCPIP, "rt_Set: Dst = %s\n", ncprange_ntoa(dst)); 779 if (gw != NULL) 780 log_Printf(LogTCPIP, "rt_Set: Gateway = %s\n", ncpaddr_ntoa(gw)); 781 failed: 782 if (cmd == RTM_ADD && (rtmes.m_rtm.rtm_errno == EEXIST || 783 (rtmes.m_rtm.rtm_errno == 0 && errno == EEXIST))) { 784 if (!bang) { 785 log_Printf(LogWARN, "Add route failed: %s already exists\n", 786 ncprange_ntoa(dst)); 787 result = 0; /* Don't add to our dynamic list */ 788 } else { 789 rtmes.m_rtm.rtm_type = cmd = RTM_CHANGE; 790 if ((wb = ID0write(s, &rtmes, nb)) < 0) 791 goto failed; 792 } 793 } else if (cmd == RTM_DELETE && 794 (rtmes.m_rtm.rtm_errno == ESRCH || 795 (rtmes.m_rtm.rtm_errno == 0 && errno == ESRCH))) { 796 if (!bang) 797 log_Printf(LogWARN, "Del route failed: %s: Non-existent\n", 798 ncprange_ntoa(dst)); 799 } else if (rtmes.m_rtm.rtm_errno == 0) { 800 if (!quiet || errno != ENETUNREACH) 801 log_Printf(LogWARN, "%s route failed: %s: errno: %s\n", cmdstr, 802 ncprange_ntoa(dst), strerror(errno)); 803 } else 804 log_Printf(LogWARN, "%s route failed: %s: %s\n", 805 cmdstr, ncprange_ntoa(dst), strerror(rtmes.m_rtm.rtm_errno)); 806 } 807 808 if (log_IsKept(LogDEBUG)) { 809 char gwstr[40]; 810 811 if (gw) 812 snprintf(gwstr, sizeof gwstr, "%s", ncpaddr_ntoa(gw)); 813 else 814 snprintf(gwstr, sizeof gwstr, "<none>"); 815 log_Printf(LogDEBUG, "wrote %d: cmd = %s, dst = %s, gateway = %s\n", 816 wb, cmdstr, ncprange_ntoa(dst), gwstr); 817 } 818 close(s); 819 820 return result; 821 } 822 823 void 824 rt_Update(struct bundle *bundle, const struct sockaddr *dst, 825 const struct sockaddr *gw, const struct sockaddr *mask) 826 { 827 struct ncprange ncpdst; 828 struct rtmsg rtmes; 829 char *p; 830 int s, wb; 831 832 s = ID0socket(PF_ROUTE, SOCK_RAW, 0); 833 if (s < 0) { 834 log_Printf(LogERROR, "rt_Update: socket(): %s\n", strerror(errno)); 835 return; 836 } 837 838 memset(&rtmes, '\0', sizeof rtmes); 839 rtmes.m_rtm.rtm_version = RTM_VERSION; 840 rtmes.m_rtm.rtm_type = RTM_CHANGE; 841 rtmes.m_rtm.rtm_addrs = 0; 842 rtmes.m_rtm.rtm_seq = ++bundle->routing_seq; 843 rtmes.m_rtm.rtm_pid = getpid(); 844 rtmes.m_rtm.rtm_flags = RTF_UP | RTF_GATEWAY | RTF_STATIC; 845 846 if (bundle->ncp.cfg.sendpipe > 0) { 847 rtmes.m_rtm.rtm_rmx.rmx_sendpipe = bundle->ncp.cfg.sendpipe; 848 rtmes.m_rtm.rtm_inits |= RTV_SPIPE; 849 } 850 851 if (bundle->ncp.cfg.recvpipe > 0) { 852 rtmes.m_rtm.rtm_rmx.rmx_recvpipe = bundle->ncp.cfg.recvpipe; 853 rtmes.m_rtm.rtm_inits |= RTV_RPIPE; 854 } 855 856 rtmes.m_rtm.rtm_rmx.rmx_mtu = bundle->iface->mtu; 857 rtmes.m_rtm.rtm_inits |= RTV_MTU; 858 p = rtmes.m_space; 859 860 if (dst) { 861 rtmes.m_rtm.rtm_addrs |= RTA_DST; 862 memcpy(p, dst, dst->sa_len); 863 p += dst->sa_len; 864 } 865 866 #ifdef __FreeBSD__ 867 /* 868 * In order to update the default route under FreeBSD, only the destination 869 * address should be specified. If the (empty) mask or the gateway 870 * address are used, the update fails... 871 * Conversely, if the gateway and mask are omitted under OpenBSD, the 872 * update will fail. 873 */ 874 if (dst) 875 ncprange_setsa(&ncpdst, dst, mask); 876 else 877 ncprange_init(&ncpdst); 878 879 if (!ncprange_isdefault(&ncpdst)) 880 #endif 881 { 882 rtmes.m_rtm.rtm_addrs |= RTA_GATEWAY; 883 memcpy(p, gw, gw->sa_len); 884 p += gw->sa_len; 885 if (mask) { 886 rtmes.m_rtm.rtm_addrs |= RTA_NETMASK; 887 memcpy(p, mask, mask->sa_len); 888 p += mask->sa_len; 889 } 890 } 891 892 rtmes.m_rtm.rtm_msglen = p - (char *)&rtmes; 893 894 wb = ID0write(s, &rtmes, rtmes.m_rtm.rtm_msglen); 895 if (wb < 0) { 896 ncprange_setsa(&ncpdst, dst, mask); 897 898 log_Printf(LogTCPIP, "rt_Update failure:\n"); 899 log_Printf(LogTCPIP, "rt_Update: Dst = %s\n", ncprange_ntoa(&ncpdst)); 900 901 if (rtmes.m_rtm.rtm_errno == 0) 902 log_Printf(LogWARN, "%s: Change route failed: errno: %s\n", 903 ncprange_ntoa(&ncpdst), strerror(errno)); 904 else 905 log_Printf(LogWARN, "%s: Change route failed: %s\n", 906 ncprange_ntoa(&ncpdst), strerror(rtmes.m_rtm.rtm_errno)); 907 } 908 close(s); 909 } 910