1 /*- 2 * SPDX-License-Identifier: BSD-3-Clause 3 * 4 * Copyright (c) 1983, 1988, 1993 5 * The Regents of the University of California. 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 * 3. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 * 31 * $FreeBSD$ 32 */ 33 34 #define RIPCMDS 35 #include "defs.h" 36 #include "pathnames.h" 37 #include <sys/stat.h> 38 #include <sys/signal.h> 39 #include <fcntl.h> 40 41 #ifdef __NetBSD__ 42 __RCSID("$NetBSD$"); 43 #elif defined(__FreeBSD__) 44 __RCSID("$FreeBSD$"); 45 #else 46 __RCSID("$Revision: 2.27 $"); 47 #ident "$Revision: 2.27 $" 48 #endif 49 50 51 #ifdef sgi 52 /* use *stat64 for files on large file systems */ 53 #define stat stat64 54 #endif 55 56 int tracelevel, new_tracelevel; 57 FILE *ftrace; /* output trace file */ 58 static const char *sigtrace_pat = "%s"; 59 static char savetracename[PATH_MAX]; 60 char inittracename[PATH_MAX]; 61 static int file_trace; /* 1=tracing to file, not stdout */ 62 63 static void trace_dump(void); 64 static void tmsg(const char *, ...) PATTRIB(1,2); 65 66 67 /* convert string to printable characters 68 */ 69 static char * 70 qstring(u_char *s, int len) 71 { 72 static char buf[8*20+1]; 73 char *p; 74 u_char *s2, c; 75 76 77 for (p = buf; len != 0 && p < &buf[sizeof(buf)-1]; len--) { 78 c = *s++; 79 if (c == '\0') { 80 for (s2 = s+1; s2 < &s[len]; s2++) { 81 if (*s2 != '\0') 82 break; 83 } 84 if (s2 >= &s[len]) 85 goto exit; 86 } 87 88 if (c >= ' ' && c < 0x7f && c != '\\') { 89 *p++ = c; 90 continue; 91 } 92 *p++ = '\\'; 93 switch (c) { 94 case '\\': 95 *p++ = '\\'; 96 break; 97 case '\n': 98 *p++= 'n'; 99 break; 100 case '\r': 101 *p++= 'r'; 102 break; 103 case '\t': 104 *p++ = 't'; 105 break; 106 case '\b': 107 *p++ = 'b'; 108 break; 109 default: 110 p += sprintf(p,"%o",c); 111 break; 112 } 113 } 114 exit: 115 *p = '\0'; 116 return buf; 117 } 118 119 120 /* convert IP address to a string, but not into a single buffer 121 */ 122 char * 123 naddr_ntoa(naddr a) 124 { 125 #define NUM_BUFS 4 126 static int bufno; 127 static struct { 128 char str[16]; /* xxx.xxx.xxx.xxx\0 */ 129 } bufs[NUM_BUFS]; 130 char *s; 131 struct in_addr addr; 132 133 addr.s_addr = a; 134 s = strcpy(bufs[bufno].str, inet_ntoa(addr)); 135 bufno = (bufno+1) % NUM_BUFS; 136 return s; 137 #undef NUM_BUFS 138 } 139 140 141 const char * 142 saddr_ntoa(struct sockaddr *sa) 143 { 144 return (sa == NULL) ? "?" : naddr_ntoa(S_ADDR(sa)); 145 } 146 147 148 static char * 149 ts(time_t secs) { 150 static char s[20]; 151 152 secs += epoch.tv_sec; 153 #ifdef sgi 154 (void)cftime(s, "%T", &secs); 155 #else 156 memcpy(s, ctime(&secs)+11, 8); 157 s[8] = '\0'; 158 #endif 159 return s; 160 } 161 162 163 /* On each event, display a time stamp. 164 * This assumes that 'now' is update once for each event, and 165 * that at least now.tv_usec changes. 166 */ 167 static struct timeval lastlog_time; 168 169 void 170 lastlog(void) 171 { 172 if (lastlog_time.tv_sec != now.tv_sec 173 || lastlog_time.tv_usec != now.tv_usec) { 174 (void)fprintf(ftrace, "-- %s --\n", ts(now.tv_sec)); 175 lastlog_time = now; 176 } 177 } 178 179 180 static void 181 tmsg(const char *p, ...) 182 { 183 va_list args; 184 185 if (ftrace != NULL) { 186 lastlog(); 187 va_start(args, p); 188 vfprintf(ftrace, p, args); 189 va_end(args); 190 (void)fputc('\n',ftrace); 191 fflush(ftrace); 192 } 193 } 194 195 196 void 197 trace_close(int zap_stdio) 198 { 199 int fd; 200 201 202 fflush(stdout); 203 fflush(stderr); 204 205 if (ftrace != NULL && zap_stdio) { 206 if (ftrace != stdout) 207 fclose(ftrace); 208 ftrace = NULL; 209 fd = open(_PATH_DEVNULL, O_RDWR); 210 if (fd < 0) 211 return; 212 if (isatty(STDIN_FILENO)) 213 (void)dup2(fd, STDIN_FILENO); 214 if (isatty(STDOUT_FILENO)) 215 (void)dup2(fd, STDOUT_FILENO); 216 if (isatty(STDERR_FILENO)) 217 (void)dup2(fd, STDERR_FILENO); 218 (void)close(fd); 219 } 220 lastlog_time.tv_sec = 0; 221 } 222 223 224 void 225 trace_flush(void) 226 { 227 if (ftrace != NULL) { 228 fflush(ftrace); 229 if (ferror(ftrace)) 230 trace_off("tracing off: %s", strerror(ferror(ftrace))); 231 } 232 } 233 234 235 void 236 trace_off(const char *p, ...) 237 { 238 va_list args; 239 240 241 if (ftrace != NULL) { 242 lastlog(); 243 va_start(args, p); 244 vfprintf(ftrace, p, args); 245 va_end(args); 246 (void)fputc('\n',ftrace); 247 } 248 trace_close(file_trace); 249 250 new_tracelevel = tracelevel = 0; 251 } 252 253 254 /* log a change in tracing 255 */ 256 void 257 tracelevel_msg(const char *pat, 258 int dump) /* -1=no dump, 0=default, 1=force */ 259 { 260 static const char * const off_msgs[MAX_TRACELEVEL] = { 261 "Tracing actions stopped", 262 "Tracing packets stopped", 263 "Tracing packet contents stopped", 264 "Tracing kernel changes stopped", 265 }; 266 static const char * const on_msgs[MAX_TRACELEVEL] = { 267 "Tracing actions started", 268 "Tracing packets started", 269 "Tracing packet contents started", 270 "Tracing kernel changes started", 271 }; 272 u_int old_tracelevel = tracelevel; 273 274 275 if (new_tracelevel < 0) 276 new_tracelevel = 0; 277 else if (new_tracelevel > MAX_TRACELEVEL) 278 new_tracelevel = MAX_TRACELEVEL; 279 280 if (new_tracelevel < tracelevel) { 281 if (new_tracelevel <= 0) { 282 trace_off(pat, off_msgs[0]); 283 } else do { 284 tmsg(pat, off_msgs[tracelevel]); 285 } 286 while (--tracelevel != new_tracelevel); 287 288 } else if (new_tracelevel > tracelevel) { 289 do { 290 tmsg(pat, on_msgs[tracelevel++]); 291 } while (tracelevel != new_tracelevel); 292 } 293 294 if (dump > 0 295 || (dump == 0 && old_tracelevel == 0 && tracelevel != 0)) 296 trace_dump(); 297 } 298 299 300 void 301 set_tracefile(const char *filename, 302 const char *pat, 303 int dump) /* -1=no dump, 0=default, 1=force */ 304 { 305 struct stat stbuf; 306 FILE *n_ftrace; 307 const char *fn; 308 309 310 /* Allow a null filename to increase the level if the trace file 311 * is already open or if coming from a trusted source, such as 312 * a signal or the command line. 313 */ 314 if (filename == NULL || filename[0] == '\0') { 315 filename = NULL; 316 if (ftrace == NULL) { 317 if (inittracename[0] == '\0') { 318 msglog("missing trace file name"); 319 return; 320 } 321 fn = inittracename; 322 } else { 323 fn = NULL; 324 } 325 326 } else if (!strcmp(filename,"dump/../table")) { 327 trace_dump(); 328 return; 329 330 } else { 331 /* Allow the file specified with "-T file" to be reopened, 332 * but require all other names specified over the net to 333 * match the official path. The path can specify a directory 334 * in which the file is to be created. 335 */ 336 if (strcmp(filename, inittracename) 337 #ifdef _PATH_TRACE 338 && (strncmp(filename, _PATH_TRACE, sizeof(_PATH_TRACE)-1) 339 || strstr(filename,"../") 340 || 0 > stat(_PATH_TRACE, &stbuf)) 341 #endif 342 ) { 343 msglog("wrong trace file \"%s\"", filename); 344 return; 345 } 346 347 /* If the new tracefile exists, it must be a regular file. 348 */ 349 if (stat(filename, &stbuf) >= 0 && !S_ISREG(stbuf.st_mode)) { 350 msglog("wrong type (%#x) of trace file \"%s\"", 351 stbuf.st_mode, filename); 352 return; 353 } 354 355 fn = filename; 356 } 357 358 if (fn != NULL) { 359 n_ftrace = fopen(fn, "a"); 360 if (n_ftrace == NULL) { 361 msglog("failed to open trace file \"%s\" %s", 362 fn, strerror(errno)); 363 if (fn == inittracename) 364 inittracename[0] = '\0'; 365 return; 366 } 367 368 tmsg("switch to trace file %s", fn); 369 370 trace_close(file_trace = 1); 371 372 if (fn != savetracename) 373 strncpy(savetracename, fn, sizeof(savetracename)-1); 374 ftrace = n_ftrace; 375 376 fflush(stdout); 377 fflush(stderr); 378 dup2(fileno(ftrace), STDOUT_FILENO); 379 dup2(fileno(ftrace), STDERR_FILENO); 380 } 381 382 if (new_tracelevel == 0 || filename == NULL) 383 new_tracelevel++; 384 tracelevel_msg(pat, dump != 0 ? dump : (filename != NULL)); 385 } 386 387 388 /* ARGSUSED */ 389 void 390 sigtrace_on(int s UNUSED) 391 { 392 new_tracelevel++; 393 sigtrace_pat = "SIGUSR1: %s"; 394 } 395 396 397 /* ARGSUSED */ 398 void 399 sigtrace_off(int s UNUSED) 400 { 401 new_tracelevel--; 402 sigtrace_pat = "SIGUSR2: %s"; 403 } 404 405 406 /* Set tracing after a signal. 407 */ 408 void 409 set_tracelevel(void) 410 { 411 if (new_tracelevel == tracelevel) 412 return; 413 414 /* If tracing entirely off, and there was no tracefile specified 415 * on the command line, then leave it off. 416 */ 417 if (new_tracelevel > tracelevel && ftrace == NULL) { 418 if (savetracename[0] != '\0') { 419 set_tracefile(savetracename,sigtrace_pat,0); 420 } else if (inittracename[0] != '\0') { 421 set_tracefile(inittracename,sigtrace_pat,0); 422 } else { 423 new_tracelevel = 0; 424 return; 425 } 426 } else { 427 tracelevel_msg(sigtrace_pat, 0); 428 } 429 } 430 431 432 /* display an address 433 */ 434 char * 435 addrname(naddr addr, /* in network byte order */ 436 naddr mask, 437 int force) /* 0=show mask if nonstandard, */ 438 { /* 1=always show mask, 2=never */ 439 #define NUM_BUFS 4 440 static int bufno; 441 static struct { 442 char str[15+20]; 443 } bufs[NUM_BUFS]; 444 char *s, *sp; 445 naddr dmask; 446 size_t l; 447 int i; 448 449 strlcpy(bufs[bufno].str, naddr_ntoa(addr), sizeof(bufs[bufno].str)); 450 s = bufs[bufno].str; 451 l = sizeof(bufs[bufno].str); 452 bufno = (bufno+1) % NUM_BUFS; 453 454 if (force == 1 || (force == 0 && mask != std_mask(addr))) { 455 sp = &s[strlen(s)]; 456 457 dmask = mask & -mask; 458 if (mask + dmask == 0) { 459 for (i = 0; i != 32 && ((1<<i) & mask) == 0; i++) 460 continue; 461 (void)snprintf(sp, s + l - sp, "/%d", 32-i); 462 463 } else { 464 (void)snprintf(sp, s + l - sp, " (mask %#x)", 465 (u_int)mask); 466 } 467 } 468 469 return s; 470 #undef NUM_BUFS 471 } 472 473 474 /* display a bit-field 475 */ 476 struct bits { 477 u_int bits_mask; 478 u_int bits_clear; 479 const char *bits_name; 480 }; 481 482 static const struct bits if_bits[] = { 483 { IFF_LOOPBACK, 0, "LOOPBACK" }, 484 { IFF_POINTOPOINT, 0, "PT-TO-PT" }, 485 { 0, 0, 0} 486 }; 487 488 static const struct bits is_bits[] = { 489 { IS_ALIAS, 0, "ALIAS" }, 490 { IS_SUBNET, 0, "" }, 491 { IS_REMOTE, (IS_NO_RDISC 492 | IS_BCAST_RDISC), "REMOTE" }, 493 { IS_PASSIVE, (IS_NO_RDISC 494 | IS_NO_RIP 495 | IS_NO_SUPER_AG 496 | IS_PM_RDISC 497 | IS_NO_AG), "PASSIVE" }, 498 { IS_EXTERNAL, 0, "EXTERNAL" }, 499 { IS_CHECKED, 0, "" }, 500 { IS_ALL_HOSTS, 0, "" }, 501 { IS_ALL_ROUTERS, 0, "" }, 502 { IS_DISTRUST, 0, "DISTRUST" }, 503 { IS_BROKE, IS_SICK, "BROKEN" }, 504 { IS_SICK, 0, "SICK" }, 505 { IS_DUP, 0, "DUPLICATE" }, 506 { IS_REDIRECT_OK, 0, "REDIRECT_OK" }, 507 { IS_NEED_NET_SYN, 0, "" }, 508 { IS_NO_AG, IS_NO_SUPER_AG, "NO_AG" }, 509 { IS_NO_SUPER_AG, 0, "NO_SUPER_AG" }, 510 { (IS_NO_RIPV1_IN 511 | IS_NO_RIPV2_IN 512 | IS_NO_RIPV1_OUT 513 | IS_NO_RIPV2_OUT), 0, "NO_RIP" }, 514 { (IS_NO_RIPV1_IN 515 | IS_NO_RIPV1_OUT), 0, "RIPV2" }, 516 { IS_NO_RIPV1_IN, 0, "NO_RIPV1_IN" }, 517 { IS_NO_RIPV2_IN, 0, "NO_RIPV2_IN" }, 518 { IS_NO_RIPV1_OUT, 0, "NO_RIPV1_OUT" }, 519 { IS_NO_RIPV2_OUT, 0, "NO_RIPV2_OUT" }, 520 { (IS_NO_ADV_IN 521 | IS_NO_SOL_OUT 522 | IS_NO_ADV_OUT), IS_BCAST_RDISC, "NO_RDISC" }, 523 { IS_NO_SOL_OUT, 0, "NO_SOLICIT" }, 524 { IS_SOL_OUT, 0, "SEND_SOLICIT" }, 525 { IS_NO_ADV_OUT, IS_BCAST_RDISC, "NO_RDISC_ADV" }, 526 { IS_ADV_OUT, 0, "RDISC_ADV" }, 527 { IS_BCAST_RDISC, 0, "BCAST_RDISC" }, 528 { IS_PM_RDISC, 0, "" }, 529 { 0, 0, "%#x"} 530 }; 531 532 static const struct bits rs_bits[] = { 533 { RS_IF, 0, "IF" }, 534 { RS_NET_INT, RS_NET_SYN, "NET_INT" }, 535 { RS_NET_SYN, 0, "NET_SYN" }, 536 { RS_SUBNET, 0, "" }, 537 { RS_LOCAL, 0, "LOCAL" }, 538 { RS_MHOME, 0, "MHOME" }, 539 { RS_STATIC, 0, "STATIC" }, 540 { RS_RDISC, 0, "RDISC" }, 541 { 0, 0, "%#x"} 542 }; 543 544 545 static void 546 trace_bits(const struct bits *tbl, 547 u_int field, 548 int force) 549 { 550 u_int b; 551 char c; 552 553 if (force) { 554 (void)putc('<', ftrace); 555 c = 0; 556 } else { 557 c = '<'; 558 } 559 560 while (field != 0 561 && (b = tbl->bits_mask) != 0) { 562 if ((b & field) == b) { 563 if (tbl->bits_name[0] != '\0') { 564 if (c) 565 (void)putc(c, ftrace); 566 (void)fprintf(ftrace, "%s", tbl->bits_name); 567 c = '|'; 568 } 569 if (0 == (field &= ~(b | tbl->bits_clear))) 570 break; 571 } 572 tbl++; 573 } 574 if (field != 0 && tbl->bits_name != NULL) { 575 if (c) 576 (void)putc(c, ftrace); 577 (void)fprintf(ftrace, tbl->bits_name, field); 578 c = '|'; 579 } 580 581 if (c != '<' || force) 582 (void)fputs("> ", ftrace); 583 } 584 585 586 char * 587 rtname(naddr dst, 588 naddr mask, 589 naddr gate) 590 { 591 static char buf[3*4+3+1+2+3 /* "xxx.xxx.xxx.xxx/xx-->" */ 592 +3*4+3+1]; /* "xxx.xxx.xxx.xxx" */ 593 int i; 594 595 i = sprintf(buf, "%-16s-->", addrname(dst, mask, 0)); 596 (void)sprintf(&buf[i], "%-*s", 15+20-MAX(20,i), naddr_ntoa(gate)); 597 return buf; 598 } 599 600 601 static void 602 print_rts(struct rt_spare *rts, 603 int force_metric, /* -1=suppress, 0=default */ 604 int force_ifp, /* -1=suppress, 0=default */ 605 int force_router, /* -1=suppress, 0=default, 1=display */ 606 int force_tag, /* -1=suppress, 0=default, 1=display */ 607 int force_time) /* 0=suppress, 1=display */ 608 { 609 int i; 610 611 612 if (force_metric >= 0) 613 (void)fprintf(ftrace, "metric=%-2d ", rts->rts_metric); 614 if (force_ifp >= 0) 615 (void)fprintf(ftrace, "%s ", (rts->rts_ifp == NULL ? 616 "if?" : rts->rts_ifp->int_name)); 617 if (force_router > 0 618 || (force_router == 0 && rts->rts_router != rts->rts_gate)) 619 (void)fprintf(ftrace, "router=%s ", 620 naddr_ntoa(rts->rts_router)); 621 if (force_time > 0) 622 (void)fprintf(ftrace, "%s ", ts(rts->rts_time)); 623 if (force_tag > 0 624 || (force_tag == 0 && rts->rts_tag != 0)) 625 (void)fprintf(ftrace, "tag=%#x ", ntohs(rts->rts_tag)); 626 if (rts->rts_de_ag != 0) { 627 for (i = 1; (u_int)(1 << i) <= rts->rts_de_ag; i++) 628 continue; 629 (void)fprintf(ftrace, "de_ag=%d ", i); 630 } 631 632 } 633 634 635 void 636 trace_if(const char *act, 637 struct interface *ifp) 638 { 639 if (!TRACEACTIONS || ftrace == NULL) 640 return; 641 642 lastlog(); 643 (void)fprintf(ftrace, "%-3s interface %-4s ", act, ifp->int_name); 644 (void)fprintf(ftrace, "%-15s-->%-15s ", 645 naddr_ntoa(ifp->int_addr), 646 addrname(((ifp->int_if_flags & IFF_POINTOPOINT) 647 ? ifp->int_dstaddr 648 : htonl(ifp->int_net)), 649 ifp->int_mask, 1)); 650 if (ifp->int_metric != 0) 651 (void)fprintf(ftrace, "metric=%d ", ifp->int_metric); 652 if (ifp->int_adj_inmetric != 0) 653 (void)fprintf(ftrace, "adj_inmetric=%u ", 654 ifp->int_adj_inmetric); 655 if (ifp->int_adj_outmetric != 0) 656 (void)fprintf(ftrace, "adj_outmetric=%u ", 657 ifp->int_adj_outmetric); 658 if (!IS_RIP_OUT_OFF(ifp->int_state) 659 && ifp->int_d_metric != 0) 660 (void)fprintf(ftrace, "fake_default=%u ", ifp->int_d_metric); 661 trace_bits(if_bits, ifp->int_if_flags, 0); 662 trace_bits(is_bits, ifp->int_state, 0); 663 (void)fputc('\n',ftrace); 664 } 665 666 667 void 668 trace_upslot(struct rt_entry *rt, 669 struct rt_spare *rts, 670 struct rt_spare *new) 671 { 672 if (!TRACEACTIONS || ftrace == NULL) 673 return; 674 675 if (rts->rts_gate == new->rts_gate 676 && rts->rts_router == new->rts_router 677 && rts->rts_metric == new->rts_metric 678 && rts->rts_tag == new->rts_tag 679 && rts->rts_de_ag == new->rts_de_ag) 680 return; 681 682 lastlog(); 683 if (new->rts_gate == 0) { 684 (void)fprintf(ftrace, "Del #%d %-35s ", 685 (int)(rts - rt->rt_spares), 686 rtname(rt->rt_dst, rt->rt_mask, rts->rts_gate)); 687 print_rts(rts, 0,0,0,0, 688 (rts != rt->rt_spares 689 || AGE_RT(rt->rt_state,new->rts_ifp))); 690 691 } else if (rts->rts_gate != RIP_DEFAULT) { 692 (void)fprintf(ftrace, "Chg #%d %-35s ", 693 (int)(rts - rt->rt_spares), 694 rtname(rt->rt_dst, rt->rt_mask, rts->rts_gate)); 695 print_rts(rts, 0,0, 696 rts->rts_gate != new->rts_gate, 697 rts->rts_tag != new->rts_tag, 698 rts != rt->rt_spares || AGE_RT(rt->rt_state, 699 rt->rt_ifp)); 700 701 (void)fprintf(ftrace, "\n %19s%-16s ", "", 702 (new->rts_gate != rts->rts_gate 703 ? naddr_ntoa(new->rts_gate) : "")); 704 print_rts(new, 705 -(new->rts_metric == rts->rts_metric), 706 -(new->rts_ifp == rts->rts_ifp), 707 0, 708 rts->rts_tag != new->rts_tag, 709 (new->rts_time != rts->rts_time 710 && (rts != rt->rt_spares 711 || AGE_RT(rt->rt_state, new->rts_ifp)))); 712 713 } else { 714 (void)fprintf(ftrace, "Add #%d %-35s ", 715 (int)(rts - rt->rt_spares), 716 rtname(rt->rt_dst, rt->rt_mask, new->rts_gate)); 717 print_rts(new, 0,0,0,0, 718 (rts != rt->rt_spares 719 || AGE_RT(rt->rt_state,new->rts_ifp))); 720 } 721 (void)fputc('\n',ftrace); 722 } 723 724 725 /* miscellaneous message checked by the caller 726 */ 727 void 728 trace_misc(const char *p, ...) 729 { 730 va_list args; 731 732 if (ftrace == NULL) 733 return; 734 735 lastlog(); 736 va_start(args, p); 737 vfprintf(ftrace, p, args); 738 va_end(args); 739 (void)fputc('\n',ftrace); 740 } 741 742 743 /* display a message if tracing actions 744 */ 745 void 746 trace_act(const char *p, ...) 747 { 748 va_list args; 749 750 if (!TRACEACTIONS || ftrace == NULL) 751 return; 752 753 lastlog(); 754 va_start(args, p); 755 vfprintf(ftrace, p, args); 756 va_end(args); 757 (void)fputc('\n',ftrace); 758 } 759 760 761 /* display a message if tracing packets 762 */ 763 void 764 trace_pkt(const char *p, ...) 765 { 766 va_list args; 767 768 if (!TRACEPACKETS || ftrace == NULL) 769 return; 770 771 lastlog(); 772 va_start(args, p); 773 vfprintf(ftrace, p, args); 774 va_end(args); 775 (void)fputc('\n',ftrace); 776 } 777 778 779 void 780 trace_change(struct rt_entry *rt, 781 u_int state, 782 struct rt_spare *new, 783 const char *label) 784 { 785 if (ftrace == NULL) 786 return; 787 788 if (rt->rt_metric == new->rts_metric 789 && rt->rt_gate == new->rts_gate 790 && rt->rt_router == new->rts_router 791 && rt->rt_state == state 792 && rt->rt_tag == new->rts_tag 793 && rt->rt_de_ag == new->rts_de_ag) 794 return; 795 796 lastlog(); 797 (void)fprintf(ftrace, "%s %-35s ", 798 label, 799 rtname(rt->rt_dst, rt->rt_mask, rt->rt_gate)); 800 print_rts(rt->rt_spares, 801 0,0,0,0, AGE_RT(rt->rt_state, rt->rt_ifp)); 802 trace_bits(rs_bits, rt->rt_state, rt->rt_state != state); 803 804 (void)fprintf(ftrace, "\n%*s %19s%-16s ", 805 (int)strlen(label), "", "", 806 (rt->rt_gate != new->rts_gate 807 ? naddr_ntoa(new->rts_gate) : "")); 808 print_rts(new, 809 -(new->rts_metric == rt->rt_metric), 810 -(new->rts_ifp == rt->rt_ifp), 811 0, 812 rt->rt_tag != new->rts_tag, 813 (rt->rt_time != new->rts_time 814 && AGE_RT(rt->rt_state,new->rts_ifp))); 815 if (rt->rt_state != state) 816 trace_bits(rs_bits, state, 1); 817 (void)fputc('\n',ftrace); 818 } 819 820 821 void 822 trace_add_del(const char * action, struct rt_entry *rt) 823 { 824 if (ftrace == NULL) 825 return; 826 827 lastlog(); 828 (void)fprintf(ftrace, "%s %-35s ", 829 action, 830 rtname(rt->rt_dst, rt->rt_mask, rt->rt_gate)); 831 print_rts(rt->rt_spares, 0,0,0,0,AGE_RT(rt->rt_state,rt->rt_ifp)); 832 trace_bits(rs_bits, rt->rt_state, 0); 833 (void)fputc('\n',ftrace); 834 } 835 836 837 /* ARGSUSED */ 838 static int 839 walk_trace(struct radix_node *rn, 840 struct walkarg *w UNUSED) 841 { 842 #define RT ((struct rt_entry *)rn) 843 struct rt_spare *rts; 844 int i; 845 846 (void)fprintf(ftrace, " %-35s ", 847 rtname(RT->rt_dst, RT->rt_mask, RT->rt_gate)); 848 print_rts(&RT->rt_spares[0], 0,0,0,0, AGE_RT(RT->rt_state, RT->rt_ifp)); 849 trace_bits(rs_bits, RT->rt_state, 0); 850 if (RT->rt_poison_time >= now_garbage 851 && RT->rt_poison_metric < RT->rt_metric) 852 (void)fprintf(ftrace, "pm=%d@%s", 853 RT->rt_poison_metric, ts(RT->rt_poison_time)); 854 855 rts = &RT->rt_spares[1]; 856 for (i = 1; i < NUM_SPARES; i++, rts++) { 857 if (rts->rts_gate != RIP_DEFAULT) { 858 (void)fprintf(ftrace,"\n #%d%15s%-16s ", 859 i, "", naddr_ntoa(rts->rts_gate)); 860 print_rts(rts, 0,0,0,0,1); 861 } 862 } 863 (void)fputc('\n',ftrace); 864 865 return 0; 866 } 867 868 869 static void 870 trace_dump(void) 871 { 872 struct interface *ifp; 873 874 if (ftrace == NULL) 875 return; 876 lastlog(); 877 878 (void)fputs("current daemon state:\n", ftrace); 879 LIST_FOREACH(ifp, &ifnet, int_list) 880 trace_if("", ifp); 881 (void)rn_walktree(rhead, walk_trace, 0); 882 } 883 884 885 void 886 trace_rip(const char *dir1, const char *dir2, 887 struct sockaddr_in *who, 888 struct interface *ifp, 889 struct rip *msg, 890 int size) /* total size of message */ 891 { 892 struct netinfo *n, *lim; 893 # define NA ((struct netauth*)n) 894 int i, seen_route; 895 896 if (!TRACEPACKETS || ftrace == NULL) 897 return; 898 899 lastlog(); 900 if (msg->rip_cmd >= RIPCMD_MAX 901 || msg->rip_vers == 0) { 902 (void)fprintf(ftrace, "%s bad RIPv%d cmd=%d %s" 903 " %s.%d size=%d\n", 904 dir1, msg->rip_vers, msg->rip_cmd, dir2, 905 naddr_ntoa(who->sin_addr.s_addr), 906 ntohs(who->sin_port), 907 size); 908 return; 909 } 910 911 (void)fprintf(ftrace, "%s RIPv%d %s %s %s.%d%s%s\n", 912 dir1, msg->rip_vers, ripcmds[msg->rip_cmd], dir2, 913 naddr_ntoa(who->sin_addr.s_addr), ntohs(who->sin_port), 914 ifp ? " via " : "", ifp ? ifp->int_name : ""); 915 if (!TRACECONTENTS) 916 return; 917 918 seen_route = 0; 919 switch (msg->rip_cmd) { 920 case RIPCMD_REQUEST: 921 case RIPCMD_RESPONSE: 922 n = msg->rip_nets; 923 lim = (struct netinfo *)((char*)msg + size); 924 for (; n < lim; n++) { 925 if (!seen_route 926 && n->n_family == RIP_AF_UNSPEC 927 && ntohl(n->n_metric) == HOPCNT_INFINITY 928 && msg->rip_cmd == RIPCMD_REQUEST 929 && (n+1 == lim 930 || (n+2 == lim 931 && (n+1)->n_family == RIP_AF_AUTH))) { 932 (void)fputs("\tQUERY ", ftrace); 933 if (n->n_dst != 0) 934 (void)fprintf(ftrace, "%s ", 935 naddr_ntoa(n->n_dst)); 936 if (n->n_mask != 0) 937 (void)fprintf(ftrace, "mask=%#x ", 938 (u_int)ntohl(n->n_mask)); 939 if (n->n_nhop != 0) 940 (void)fprintf(ftrace, "nhop=%s ", 941 naddr_ntoa(n->n_nhop)); 942 if (n->n_tag != 0) 943 (void)fprintf(ftrace, "tag=%#x ", 944 ntohs(n->n_tag)); 945 (void)fputc('\n',ftrace); 946 continue; 947 } 948 949 if (n->n_family == RIP_AF_AUTH) { 950 if (NA->a_type == RIP_AUTH_PW 951 && n == msg->rip_nets) { 952 (void)fprintf(ftrace, "\tPassword" 953 " Authentication:" 954 " \"%s\"\n", 955 qstring(NA->au.au_pw, 956 RIP_AUTH_PW_LEN)); 957 continue; 958 } 959 960 if (NA->a_type == RIP_AUTH_MD5 961 && n == msg->rip_nets) { 962 (void)fprintf(ftrace, 963 "\tMD5 Auth" 964 " pkt_len=%d KeyID=%u" 965 " auth_len=%d" 966 " seqno=%#x" 967 " rsvd=%#x,%#x\n", 968 ntohs(NA->au.a_md5.md5_pkt_len), 969 NA->au.a_md5.md5_keyid, 970 NA->au.a_md5.md5_auth_len, 971 (int)ntohl(NA->au.a_md5.md5_seqno), 972 (int)ntohs(NA->au.a_md5.rsvd[0]), 973 (int)ntohs(NA->au.a_md5.rsvd[1])); 974 continue; 975 } 976 (void)fprintf(ftrace, 977 "\tAuthentication type %d: ", 978 ntohs(NA->a_type)); 979 for (i = 0; 980 i < (int)sizeof(NA->au.au_pw); 981 i++) 982 (void)fprintf(ftrace, "%02x ", 983 NA->au.au_pw[i]); 984 (void)fputc('\n',ftrace); 985 continue; 986 } 987 988 seen_route = 1; 989 if (n->n_family != RIP_AF_INET) { 990 (void)fprintf(ftrace, 991 "\t(af %d) %-18s mask=%#x ", 992 ntohs(n->n_family), 993 naddr_ntoa(n->n_dst), 994 (u_int)ntohl(n->n_mask)); 995 } else if (msg->rip_vers == RIPv1) { 996 (void)fprintf(ftrace, "\t%-18s ", 997 addrname(n->n_dst, 998 ntohl(n->n_mask), 999 n->n_mask==0 ? 2 : 1)); 1000 } else { 1001 (void)fprintf(ftrace, "\t%-18s ", 1002 addrname(n->n_dst, 1003 ntohl(n->n_mask), 1004 n->n_mask==0 ? 2 : 0)); 1005 } 1006 (void)fprintf(ftrace, "metric=%-2d ", 1007 (u_int)ntohl(n->n_metric)); 1008 if (n->n_nhop != 0) 1009 (void)fprintf(ftrace, " nhop=%s ", 1010 naddr_ntoa(n->n_nhop)); 1011 if (n->n_tag != 0) 1012 (void)fprintf(ftrace, "tag=%#x", 1013 ntohs(n->n_tag)); 1014 (void)fputc('\n',ftrace); 1015 } 1016 if (size != (char *)n - (char *)msg) 1017 (void)fprintf(ftrace, "truncated record, len %d\n", 1018 size); 1019 break; 1020 1021 case RIPCMD_TRACEON: 1022 fprintf(ftrace, "\tfile=\"%.*s\"\n", size-4, 1023 msg->rip_tracefile); 1024 break; 1025 1026 case RIPCMD_TRACEOFF: 1027 break; 1028 } 1029 } 1030