1 /* 2 * Copyright (c) 1983, 1988, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. Neither the name of the University nor the names of its contributors 14 * may be used to endorse or promote products derived from this software 15 * without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 * 29 * $FreeBSD$ 30 */ 31 32 #define RIPCMDS 33 #include "defs.h" 34 #include "pathnames.h" 35 #include <sys/stat.h> 36 #include <sys/signal.h> 37 #include <fcntl.h> 38 39 #ifdef __NetBSD__ 40 __RCSID("$NetBSD$"); 41 #elif defined(__FreeBSD__) 42 __RCSID("$FreeBSD$"); 43 #else 44 __RCSID("$Revision: 2.27 $"); 45 #ident "$Revision: 2.27 $" 46 #endif 47 48 49 #ifdef sgi 50 /* use *stat64 for files on large file systems */ 51 #define stat stat64 52 #endif 53 54 int tracelevel, new_tracelevel; 55 FILE *ftrace; /* output trace file */ 56 static const char *sigtrace_pat = "%s"; 57 static char savetracename[PATH_MAX]; 58 char inittracename[PATH_MAX]; 59 static int file_trace; /* 1=tracing to file, not stdout */ 60 61 static void trace_dump(void); 62 static void tmsg(const char *, ...) PATTRIB(1,2); 63 64 65 /* convert string to printable characters 66 */ 67 static char * 68 qstring(u_char *s, int len) 69 { 70 static char buf[8*20+1]; 71 char *p; 72 u_char *s2, c; 73 74 75 for (p = buf; len != 0 && p < &buf[sizeof(buf)-1]; len--) { 76 c = *s++; 77 if (c == '\0') { 78 for (s2 = s+1; s2 < &s[len]; s2++) { 79 if (*s2 != '\0') 80 break; 81 } 82 if (s2 >= &s[len]) 83 goto exit; 84 } 85 86 if (c >= ' ' && c < 0x7f && c != '\\') { 87 *p++ = c; 88 continue; 89 } 90 *p++ = '\\'; 91 switch (c) { 92 case '\\': 93 *p++ = '\\'; 94 break; 95 case '\n': 96 *p++= 'n'; 97 break; 98 case '\r': 99 *p++= 'r'; 100 break; 101 case '\t': 102 *p++ = 't'; 103 break; 104 case '\b': 105 *p++ = 'b'; 106 break; 107 default: 108 p += sprintf(p,"%o",c); 109 break; 110 } 111 } 112 exit: 113 *p = '\0'; 114 return buf; 115 } 116 117 118 /* convert IP address to a string, but not into a single buffer 119 */ 120 char * 121 naddr_ntoa(naddr a) 122 { 123 #define NUM_BUFS 4 124 static int bufno; 125 static struct { 126 char str[16]; /* xxx.xxx.xxx.xxx\0 */ 127 } bufs[NUM_BUFS]; 128 char *s; 129 struct in_addr addr; 130 131 addr.s_addr = a; 132 s = strcpy(bufs[bufno].str, inet_ntoa(addr)); 133 bufno = (bufno+1) % NUM_BUFS; 134 return s; 135 #undef NUM_BUFS 136 } 137 138 139 const char * 140 saddr_ntoa(struct sockaddr *sa) 141 { 142 return (sa == NULL) ? "?" : naddr_ntoa(S_ADDR(sa)); 143 } 144 145 146 static char * 147 ts(time_t secs) { 148 static char s[20]; 149 150 secs += epoch.tv_sec; 151 #ifdef sgi 152 (void)cftime(s, "%T", &secs); 153 #else 154 memcpy(s, ctime(&secs)+11, 8); 155 s[8] = '\0'; 156 #endif 157 return s; 158 } 159 160 161 /* On each event, display a time stamp. 162 * This assumes that 'now' is update once for each event, and 163 * that at least now.tv_usec changes. 164 */ 165 static struct timeval lastlog_time; 166 167 void 168 lastlog(void) 169 { 170 if (lastlog_time.tv_sec != now.tv_sec 171 || lastlog_time.tv_usec != now.tv_usec) { 172 (void)fprintf(ftrace, "-- %s --\n", ts(now.tv_sec)); 173 lastlog_time = now; 174 } 175 } 176 177 178 static void 179 tmsg(const char *p, ...) 180 { 181 va_list args; 182 183 if (ftrace != NULL) { 184 lastlog(); 185 va_start(args, p); 186 vfprintf(ftrace, p, args); 187 va_end(args); 188 (void)fputc('\n',ftrace); 189 fflush(ftrace); 190 } 191 } 192 193 194 void 195 trace_close(int zap_stdio) 196 { 197 int fd; 198 199 200 fflush(stdout); 201 fflush(stderr); 202 203 if (ftrace != NULL && zap_stdio) { 204 if (ftrace != stdout) 205 fclose(ftrace); 206 ftrace = NULL; 207 fd = open(_PATH_DEVNULL, O_RDWR); 208 if (fd < 0) 209 return; 210 if (isatty(STDIN_FILENO)) 211 (void)dup2(fd, STDIN_FILENO); 212 if (isatty(STDOUT_FILENO)) 213 (void)dup2(fd, STDOUT_FILENO); 214 if (isatty(STDERR_FILENO)) 215 (void)dup2(fd, STDERR_FILENO); 216 (void)close(fd); 217 } 218 lastlog_time.tv_sec = 0; 219 } 220 221 222 void 223 trace_flush(void) 224 { 225 if (ftrace != NULL) { 226 fflush(ftrace); 227 if (ferror(ftrace)) 228 trace_off("tracing off: %s", strerror(ferror(ftrace))); 229 } 230 } 231 232 233 void 234 trace_off(const char *p, ...) 235 { 236 va_list args; 237 238 239 if (ftrace != NULL) { 240 lastlog(); 241 va_start(args, p); 242 vfprintf(ftrace, p, args); 243 va_end(args); 244 (void)fputc('\n',ftrace); 245 } 246 trace_close(file_trace); 247 248 new_tracelevel = tracelevel = 0; 249 } 250 251 252 /* log a change in tracing 253 */ 254 void 255 tracelevel_msg(const char *pat, 256 int dump) /* -1=no dump, 0=default, 1=force */ 257 { 258 static const char * const off_msgs[MAX_TRACELEVEL] = { 259 "Tracing actions stopped", 260 "Tracing packets stopped", 261 "Tracing packet contents stopped", 262 "Tracing kernel changes stopped", 263 }; 264 static const char * const on_msgs[MAX_TRACELEVEL] = { 265 "Tracing actions started", 266 "Tracing packets started", 267 "Tracing packet contents started", 268 "Tracing kernel changes started", 269 }; 270 u_int old_tracelevel = tracelevel; 271 272 273 if (new_tracelevel < 0) 274 new_tracelevel = 0; 275 else if (new_tracelevel > MAX_TRACELEVEL) 276 new_tracelevel = MAX_TRACELEVEL; 277 278 if (new_tracelevel < tracelevel) { 279 if (new_tracelevel <= 0) { 280 trace_off(pat, off_msgs[0]); 281 } else do { 282 tmsg(pat, off_msgs[tracelevel]); 283 } 284 while (--tracelevel != new_tracelevel); 285 286 } else if (new_tracelevel > tracelevel) { 287 do { 288 tmsg(pat, on_msgs[tracelevel++]); 289 } while (tracelevel != new_tracelevel); 290 } 291 292 if (dump > 0 293 || (dump == 0 && old_tracelevel == 0 && tracelevel != 0)) 294 trace_dump(); 295 } 296 297 298 void 299 set_tracefile(const char *filename, 300 const char *pat, 301 int dump) /* -1=no dump, 0=default, 1=force */ 302 { 303 struct stat stbuf; 304 FILE *n_ftrace; 305 const char *fn; 306 307 308 /* Allow a null filename to increase the level if the trace file 309 * is already open or if coming from a trusted source, such as 310 * a signal or the command line. 311 */ 312 if (filename == NULL || filename[0] == '\0') { 313 filename = NULL; 314 if (ftrace == NULL) { 315 if (inittracename[0] == '\0') { 316 msglog("missing trace file name"); 317 return; 318 } 319 fn = inittracename; 320 } else { 321 fn = NULL; 322 } 323 324 } else if (!strcmp(filename,"dump/../table")) { 325 trace_dump(); 326 return; 327 328 } else { 329 /* Allow the file specified with "-T file" to be reopened, 330 * but require all other names specified over the net to 331 * match the official path. The path can specify a directory 332 * in which the file is to be created. 333 */ 334 if (strcmp(filename, inittracename) 335 #ifdef _PATH_TRACE 336 && (strncmp(filename, _PATH_TRACE, sizeof(_PATH_TRACE)-1) 337 || strstr(filename,"../") 338 || 0 > stat(_PATH_TRACE, &stbuf)) 339 #endif 340 ) { 341 msglog("wrong trace file \"%s\"", filename); 342 return; 343 } 344 345 /* If the new tracefile exists, it must be a regular file. 346 */ 347 if (stat(filename, &stbuf) >= 0 && !S_ISREG(stbuf.st_mode)) { 348 msglog("wrong type (%#x) of trace file \"%s\"", 349 stbuf.st_mode, filename); 350 return; 351 } 352 353 fn = filename; 354 } 355 356 if (fn != NULL) { 357 n_ftrace = fopen(fn, "a"); 358 if (n_ftrace == NULL) { 359 msglog("failed to open trace file \"%s\" %s", 360 fn, strerror(errno)); 361 if (fn == inittracename) 362 inittracename[0] = '\0'; 363 return; 364 } 365 366 tmsg("switch to trace file %s", fn); 367 368 trace_close(file_trace = 1); 369 370 if (fn != savetracename) 371 strncpy(savetracename, fn, sizeof(savetracename)-1); 372 ftrace = n_ftrace; 373 374 fflush(stdout); 375 fflush(stderr); 376 dup2(fileno(ftrace), STDOUT_FILENO); 377 dup2(fileno(ftrace), STDERR_FILENO); 378 } 379 380 if (new_tracelevel == 0 || filename == NULL) 381 new_tracelevel++; 382 tracelevel_msg(pat, dump != 0 ? dump : (filename != NULL)); 383 } 384 385 386 /* ARGSUSED */ 387 void 388 sigtrace_on(int s UNUSED) 389 { 390 new_tracelevel++; 391 sigtrace_pat = "SIGUSR1: %s"; 392 } 393 394 395 /* ARGSUSED */ 396 void 397 sigtrace_off(int s UNUSED) 398 { 399 new_tracelevel--; 400 sigtrace_pat = "SIGUSR2: %s"; 401 } 402 403 404 /* Set tracing after a signal. 405 */ 406 void 407 set_tracelevel(void) 408 { 409 if (new_tracelevel == tracelevel) 410 return; 411 412 /* If tracing entirely off, and there was no tracefile specified 413 * on the command line, then leave it off. 414 */ 415 if (new_tracelevel > tracelevel && ftrace == NULL) { 416 if (savetracename[0] != '\0') { 417 set_tracefile(savetracename,sigtrace_pat,0); 418 } else if (inittracename[0] != '\0') { 419 set_tracefile(inittracename,sigtrace_pat,0); 420 } else { 421 new_tracelevel = 0; 422 return; 423 } 424 } else { 425 tracelevel_msg(sigtrace_pat, 0); 426 } 427 } 428 429 430 /* display an address 431 */ 432 char * 433 addrname(naddr addr, /* in network byte order */ 434 naddr mask, 435 int force) /* 0=show mask if nonstandard, */ 436 { /* 1=always show mask, 2=never */ 437 #define NUM_BUFS 4 438 static int bufno; 439 static struct { 440 char str[15+20]; 441 } bufs[NUM_BUFS]; 442 char *s, *sp; 443 naddr dmask; 444 size_t l; 445 int i; 446 447 strlcpy(bufs[bufno].str, naddr_ntoa(addr), sizeof(bufs[bufno].str)); 448 s = bufs[bufno].str; 449 l = sizeof(bufs[bufno].str); 450 bufno = (bufno+1) % NUM_BUFS; 451 452 if (force == 1 || (force == 0 && mask != std_mask(addr))) { 453 sp = &s[strlen(s)]; 454 455 dmask = mask & -mask; 456 if (mask + dmask == 0) { 457 for (i = 0; i != 32 && ((1<<i) & mask) == 0; i++) 458 continue; 459 (void)snprintf(sp, s + l - sp, "/%d", 32-i); 460 461 } else { 462 (void)snprintf(sp, s + l - sp, " (mask %#x)", 463 (u_int)mask); 464 } 465 } 466 467 return s; 468 #undef NUM_BUFS 469 } 470 471 472 /* display a bit-field 473 */ 474 struct bits { 475 u_int bits_mask; 476 u_int bits_clear; 477 const char *bits_name; 478 }; 479 480 static const struct bits if_bits[] = { 481 { IFF_LOOPBACK, 0, "LOOPBACK" }, 482 { IFF_POINTOPOINT, 0, "PT-TO-PT" }, 483 { 0, 0, 0} 484 }; 485 486 static const struct bits is_bits[] = { 487 { IS_ALIAS, 0, "ALIAS" }, 488 { IS_SUBNET, 0, "" }, 489 { IS_REMOTE, (IS_NO_RDISC 490 | IS_BCAST_RDISC), "REMOTE" }, 491 { IS_PASSIVE, (IS_NO_RDISC 492 | IS_NO_RIP 493 | IS_NO_SUPER_AG 494 | IS_PM_RDISC 495 | IS_NO_AG), "PASSIVE" }, 496 { IS_EXTERNAL, 0, "EXTERNAL" }, 497 { IS_CHECKED, 0, "" }, 498 { IS_ALL_HOSTS, 0, "" }, 499 { IS_ALL_ROUTERS, 0, "" }, 500 { IS_DISTRUST, 0, "DISTRUST" }, 501 { IS_BROKE, IS_SICK, "BROKEN" }, 502 { IS_SICK, 0, "SICK" }, 503 { IS_DUP, 0, "DUPLICATE" }, 504 { IS_REDIRECT_OK, 0, "REDIRECT_OK" }, 505 { IS_NEED_NET_SYN, 0, "" }, 506 { IS_NO_AG, IS_NO_SUPER_AG, "NO_AG" }, 507 { IS_NO_SUPER_AG, 0, "NO_SUPER_AG" }, 508 { (IS_NO_RIPV1_IN 509 | IS_NO_RIPV2_IN 510 | IS_NO_RIPV1_OUT 511 | IS_NO_RIPV2_OUT), 0, "NO_RIP" }, 512 { (IS_NO_RIPV1_IN 513 | IS_NO_RIPV1_OUT), 0, "RIPV2" }, 514 { IS_NO_RIPV1_IN, 0, "NO_RIPV1_IN" }, 515 { IS_NO_RIPV2_IN, 0, "NO_RIPV2_IN" }, 516 { IS_NO_RIPV1_OUT, 0, "NO_RIPV1_OUT" }, 517 { IS_NO_RIPV2_OUT, 0, "NO_RIPV2_OUT" }, 518 { (IS_NO_ADV_IN 519 | IS_NO_SOL_OUT 520 | IS_NO_ADV_OUT), IS_BCAST_RDISC, "NO_RDISC" }, 521 { IS_NO_SOL_OUT, 0, "NO_SOLICIT" }, 522 { IS_SOL_OUT, 0, "SEND_SOLICIT" }, 523 { IS_NO_ADV_OUT, IS_BCAST_RDISC, "NO_RDISC_ADV" }, 524 { IS_ADV_OUT, 0, "RDISC_ADV" }, 525 { IS_BCAST_RDISC, 0, "BCAST_RDISC" }, 526 { IS_PM_RDISC, 0, "" }, 527 { 0, 0, "%#x"} 528 }; 529 530 static const struct bits rs_bits[] = { 531 { RS_IF, 0, "IF" }, 532 { RS_NET_INT, RS_NET_SYN, "NET_INT" }, 533 { RS_NET_SYN, 0, "NET_SYN" }, 534 { RS_SUBNET, 0, "" }, 535 { RS_LOCAL, 0, "LOCAL" }, 536 { RS_MHOME, 0, "MHOME" }, 537 { RS_STATIC, 0, "STATIC" }, 538 { RS_RDISC, 0, "RDISC" }, 539 { 0, 0, "%#x"} 540 }; 541 542 543 static void 544 trace_bits(const struct bits *tbl, 545 u_int field, 546 int force) 547 { 548 u_int b; 549 char c; 550 551 if (force) { 552 (void)putc('<', ftrace); 553 c = 0; 554 } else { 555 c = '<'; 556 } 557 558 while (field != 0 559 && (b = tbl->bits_mask) != 0) { 560 if ((b & field) == b) { 561 if (tbl->bits_name[0] != '\0') { 562 if (c) 563 (void)putc(c, ftrace); 564 (void)fprintf(ftrace, "%s", tbl->bits_name); 565 c = '|'; 566 } 567 if (0 == (field &= ~(b | tbl->bits_clear))) 568 break; 569 } 570 tbl++; 571 } 572 if (field != 0 && tbl->bits_name != NULL) { 573 if (c) 574 (void)putc(c, ftrace); 575 (void)fprintf(ftrace, tbl->bits_name, field); 576 c = '|'; 577 } 578 579 if (c != '<' || force) 580 (void)fputs("> ", ftrace); 581 } 582 583 584 char * 585 rtname(naddr dst, 586 naddr mask, 587 naddr gate) 588 { 589 static char buf[3*4+3+1+2+3 /* "xxx.xxx.xxx.xxx/xx-->" */ 590 +3*4+3+1]; /* "xxx.xxx.xxx.xxx" */ 591 int i; 592 593 i = sprintf(buf, "%-16s-->", addrname(dst, mask, 0)); 594 (void)sprintf(&buf[i], "%-*s", 15+20-MAX(20,i), naddr_ntoa(gate)); 595 return buf; 596 } 597 598 599 static void 600 print_rts(struct rt_spare *rts, 601 int force_metric, /* -1=suppress, 0=default */ 602 int force_ifp, /* -1=suppress, 0=default */ 603 int force_router, /* -1=suppress, 0=default, 1=display */ 604 int force_tag, /* -1=suppress, 0=default, 1=display */ 605 int force_time) /* 0=suppress, 1=display */ 606 { 607 int i; 608 609 610 if (force_metric >= 0) 611 (void)fprintf(ftrace, "metric=%-2d ", rts->rts_metric); 612 if (force_ifp >= 0) 613 (void)fprintf(ftrace, "%s ", (rts->rts_ifp == NULL ? 614 "if?" : rts->rts_ifp->int_name)); 615 if (force_router > 0 616 || (force_router == 0 && rts->rts_router != rts->rts_gate)) 617 (void)fprintf(ftrace, "router=%s ", 618 naddr_ntoa(rts->rts_router)); 619 if (force_time > 0) 620 (void)fprintf(ftrace, "%s ", ts(rts->rts_time)); 621 if (force_tag > 0 622 || (force_tag == 0 && rts->rts_tag != 0)) 623 (void)fprintf(ftrace, "tag=%#x ", ntohs(rts->rts_tag)); 624 if (rts->rts_de_ag != 0) { 625 for (i = 1; (u_int)(1 << i) <= rts->rts_de_ag; i++) 626 continue; 627 (void)fprintf(ftrace, "de_ag=%d ", i); 628 } 629 630 } 631 632 633 void 634 trace_if(const char *act, 635 struct interface *ifp) 636 { 637 if (!TRACEACTIONS || ftrace == NULL) 638 return; 639 640 lastlog(); 641 (void)fprintf(ftrace, "%-3s interface %-4s ", act, ifp->int_name); 642 (void)fprintf(ftrace, "%-15s-->%-15s ", 643 naddr_ntoa(ifp->int_addr), 644 addrname(((ifp->int_if_flags & IFF_POINTOPOINT) 645 ? ifp->int_dstaddr 646 : htonl(ifp->int_net)), 647 ifp->int_mask, 1)); 648 if (ifp->int_metric != 0) 649 (void)fprintf(ftrace, "metric=%d ", ifp->int_metric); 650 if (ifp->int_adj_inmetric != 0) 651 (void)fprintf(ftrace, "adj_inmetric=%u ", 652 ifp->int_adj_inmetric); 653 if (ifp->int_adj_outmetric != 0) 654 (void)fprintf(ftrace, "adj_outmetric=%u ", 655 ifp->int_adj_outmetric); 656 if (!IS_RIP_OUT_OFF(ifp->int_state) 657 && ifp->int_d_metric != 0) 658 (void)fprintf(ftrace, "fake_default=%u ", ifp->int_d_metric); 659 trace_bits(if_bits, ifp->int_if_flags, 0); 660 trace_bits(is_bits, ifp->int_state, 0); 661 (void)fputc('\n',ftrace); 662 } 663 664 665 void 666 trace_upslot(struct rt_entry *rt, 667 struct rt_spare *rts, 668 struct rt_spare *new) 669 { 670 if (!TRACEACTIONS || ftrace == NULL) 671 return; 672 673 if (rts->rts_gate == new->rts_gate 674 && rts->rts_router == new->rts_router 675 && rts->rts_metric == new->rts_metric 676 && rts->rts_tag == new->rts_tag 677 && rts->rts_de_ag == new->rts_de_ag) 678 return; 679 680 lastlog(); 681 if (new->rts_gate == 0) { 682 (void)fprintf(ftrace, "Del #%d %-35s ", 683 (int)(rts - rt->rt_spares), 684 rtname(rt->rt_dst, rt->rt_mask, rts->rts_gate)); 685 print_rts(rts, 0,0,0,0, 686 (rts != rt->rt_spares 687 || AGE_RT(rt->rt_state,new->rts_ifp))); 688 689 } else if (rts->rts_gate != RIP_DEFAULT) { 690 (void)fprintf(ftrace, "Chg #%d %-35s ", 691 (int)(rts - rt->rt_spares), 692 rtname(rt->rt_dst, rt->rt_mask, rts->rts_gate)); 693 print_rts(rts, 0,0, 694 rts->rts_gate != new->rts_gate, 695 rts->rts_tag != new->rts_tag, 696 rts != rt->rt_spares || AGE_RT(rt->rt_state, 697 rt->rt_ifp)); 698 699 (void)fprintf(ftrace, "\n %19s%-16s ", "", 700 (new->rts_gate != rts->rts_gate 701 ? naddr_ntoa(new->rts_gate) : "")); 702 print_rts(new, 703 -(new->rts_metric == rts->rts_metric), 704 -(new->rts_ifp == rts->rts_ifp), 705 0, 706 rts->rts_tag != new->rts_tag, 707 (new->rts_time != rts->rts_time 708 && (rts != rt->rt_spares 709 || AGE_RT(rt->rt_state, new->rts_ifp)))); 710 711 } else { 712 (void)fprintf(ftrace, "Add #%d %-35s ", 713 (int)(rts - rt->rt_spares), 714 rtname(rt->rt_dst, rt->rt_mask, new->rts_gate)); 715 print_rts(new, 0,0,0,0, 716 (rts != rt->rt_spares 717 || AGE_RT(rt->rt_state,new->rts_ifp))); 718 } 719 (void)fputc('\n',ftrace); 720 } 721 722 723 /* miscellaneous message checked by the caller 724 */ 725 void 726 trace_misc(const char *p, ...) 727 { 728 va_list args; 729 730 if (ftrace == NULL) 731 return; 732 733 lastlog(); 734 va_start(args, p); 735 vfprintf(ftrace, p, args); 736 va_end(args); 737 (void)fputc('\n',ftrace); 738 } 739 740 741 /* display a message if tracing actions 742 */ 743 void 744 trace_act(const char *p, ...) 745 { 746 va_list args; 747 748 if (!TRACEACTIONS || ftrace == NULL) 749 return; 750 751 lastlog(); 752 va_start(args, p); 753 vfprintf(ftrace, p, args); 754 va_end(args); 755 (void)fputc('\n',ftrace); 756 } 757 758 759 /* display a message if tracing packets 760 */ 761 void 762 trace_pkt(const char *p, ...) 763 { 764 va_list args; 765 766 if (!TRACEPACKETS || ftrace == NULL) 767 return; 768 769 lastlog(); 770 va_start(args, p); 771 vfprintf(ftrace, p, args); 772 va_end(args); 773 (void)fputc('\n',ftrace); 774 } 775 776 777 void 778 trace_change(struct rt_entry *rt, 779 u_int state, 780 struct rt_spare *new, 781 const char *label) 782 { 783 if (ftrace == NULL) 784 return; 785 786 if (rt->rt_metric == new->rts_metric 787 && rt->rt_gate == new->rts_gate 788 && rt->rt_router == new->rts_router 789 && rt->rt_state == state 790 && rt->rt_tag == new->rts_tag 791 && rt->rt_de_ag == new->rts_de_ag) 792 return; 793 794 lastlog(); 795 (void)fprintf(ftrace, "%s %-35s ", 796 label, 797 rtname(rt->rt_dst, rt->rt_mask, rt->rt_gate)); 798 print_rts(rt->rt_spares, 799 0,0,0,0, AGE_RT(rt->rt_state, rt->rt_ifp)); 800 trace_bits(rs_bits, rt->rt_state, rt->rt_state != state); 801 802 (void)fprintf(ftrace, "\n%*s %19s%-16s ", 803 (int)strlen(label), "", "", 804 (rt->rt_gate != new->rts_gate 805 ? naddr_ntoa(new->rts_gate) : "")); 806 print_rts(new, 807 -(new->rts_metric == rt->rt_metric), 808 -(new->rts_ifp == rt->rt_ifp), 809 0, 810 rt->rt_tag != new->rts_tag, 811 (rt->rt_time != new->rts_time 812 && AGE_RT(rt->rt_state,new->rts_ifp))); 813 if (rt->rt_state != state) 814 trace_bits(rs_bits, state, 1); 815 (void)fputc('\n',ftrace); 816 } 817 818 819 void 820 trace_add_del(const char * action, struct rt_entry *rt) 821 { 822 if (ftrace == NULL) 823 return; 824 825 lastlog(); 826 (void)fprintf(ftrace, "%s %-35s ", 827 action, 828 rtname(rt->rt_dst, rt->rt_mask, rt->rt_gate)); 829 print_rts(rt->rt_spares, 0,0,0,0,AGE_RT(rt->rt_state,rt->rt_ifp)); 830 trace_bits(rs_bits, rt->rt_state, 0); 831 (void)fputc('\n',ftrace); 832 } 833 834 835 /* ARGSUSED */ 836 static int 837 walk_trace(struct radix_node *rn, 838 struct walkarg *w UNUSED) 839 { 840 #define RT ((struct rt_entry *)rn) 841 struct rt_spare *rts; 842 int i; 843 844 (void)fprintf(ftrace, " %-35s ", 845 rtname(RT->rt_dst, RT->rt_mask, RT->rt_gate)); 846 print_rts(&RT->rt_spares[0], 0,0,0,0, AGE_RT(RT->rt_state, RT->rt_ifp)); 847 trace_bits(rs_bits, RT->rt_state, 0); 848 if (RT->rt_poison_time >= now_garbage 849 && RT->rt_poison_metric < RT->rt_metric) 850 (void)fprintf(ftrace, "pm=%d@%s", 851 RT->rt_poison_metric, ts(RT->rt_poison_time)); 852 853 rts = &RT->rt_spares[1]; 854 for (i = 1; i < NUM_SPARES; i++, rts++) { 855 if (rts->rts_gate != RIP_DEFAULT) { 856 (void)fprintf(ftrace,"\n #%d%15s%-16s ", 857 i, "", naddr_ntoa(rts->rts_gate)); 858 print_rts(rts, 0,0,0,0,1); 859 } 860 } 861 (void)fputc('\n',ftrace); 862 863 return 0; 864 } 865 866 867 static void 868 trace_dump(void) 869 { 870 struct interface *ifp; 871 872 if (ftrace == NULL) 873 return; 874 lastlog(); 875 876 (void)fputs("current daemon state:\n", ftrace); 877 LIST_FOREACH(ifp, &ifnet, int_list) 878 trace_if("", ifp); 879 (void)rn_walktree(rhead, walk_trace, 0); 880 } 881 882 883 void 884 trace_rip(const char *dir1, const char *dir2, 885 struct sockaddr_in *who, 886 struct interface *ifp, 887 struct rip *msg, 888 int size) /* total size of message */ 889 { 890 struct netinfo *n, *lim; 891 # define NA ((struct netauth*)n) 892 int i, seen_route; 893 894 if (!TRACEPACKETS || ftrace == NULL) 895 return; 896 897 lastlog(); 898 if (msg->rip_cmd >= RIPCMD_MAX 899 || msg->rip_vers == 0) { 900 (void)fprintf(ftrace, "%s bad RIPv%d cmd=%d %s" 901 " %s.%d size=%d\n", 902 dir1, msg->rip_vers, msg->rip_cmd, dir2, 903 naddr_ntoa(who->sin_addr.s_addr), 904 ntohs(who->sin_port), 905 size); 906 return; 907 } 908 909 (void)fprintf(ftrace, "%s RIPv%d %s %s %s.%d%s%s\n", 910 dir1, msg->rip_vers, ripcmds[msg->rip_cmd], dir2, 911 naddr_ntoa(who->sin_addr.s_addr), ntohs(who->sin_port), 912 ifp ? " via " : "", ifp ? ifp->int_name : ""); 913 if (!TRACECONTENTS) 914 return; 915 916 seen_route = 0; 917 switch (msg->rip_cmd) { 918 case RIPCMD_REQUEST: 919 case RIPCMD_RESPONSE: 920 n = msg->rip_nets; 921 lim = (struct netinfo *)((char*)msg + size); 922 for (; n < lim; n++) { 923 if (!seen_route 924 && n->n_family == RIP_AF_UNSPEC 925 && ntohl(n->n_metric) == HOPCNT_INFINITY 926 && msg->rip_cmd == RIPCMD_REQUEST 927 && (n+1 == lim 928 || (n+2 == lim 929 && (n+1)->n_family == RIP_AF_AUTH))) { 930 (void)fputs("\tQUERY ", ftrace); 931 if (n->n_dst != 0) 932 (void)fprintf(ftrace, "%s ", 933 naddr_ntoa(n->n_dst)); 934 if (n->n_mask != 0) 935 (void)fprintf(ftrace, "mask=%#x ", 936 (u_int)ntohl(n->n_mask)); 937 if (n->n_nhop != 0) 938 (void)fprintf(ftrace, "nhop=%s ", 939 naddr_ntoa(n->n_nhop)); 940 if (n->n_tag != 0) 941 (void)fprintf(ftrace, "tag=%#x ", 942 ntohs(n->n_tag)); 943 (void)fputc('\n',ftrace); 944 continue; 945 } 946 947 if (n->n_family == RIP_AF_AUTH) { 948 if (NA->a_type == RIP_AUTH_PW 949 && n == msg->rip_nets) { 950 (void)fprintf(ftrace, "\tPassword" 951 " Authentication:" 952 " \"%s\"\n", 953 qstring(NA->au.au_pw, 954 RIP_AUTH_PW_LEN)); 955 continue; 956 } 957 958 if (NA->a_type == RIP_AUTH_MD5 959 && n == msg->rip_nets) { 960 (void)fprintf(ftrace, 961 "\tMD5 Auth" 962 " pkt_len=%d KeyID=%u" 963 " auth_len=%d" 964 " seqno=%#x" 965 " rsvd=%#x,%#x\n", 966 ntohs(NA->au.a_md5.md5_pkt_len), 967 NA->au.a_md5.md5_keyid, 968 NA->au.a_md5.md5_auth_len, 969 (int)ntohl(NA->au.a_md5.md5_seqno), 970 (int)ntohs(NA->au.a_md5.rsvd[0]), 971 (int)ntohs(NA->au.a_md5.rsvd[1])); 972 continue; 973 } 974 (void)fprintf(ftrace, 975 "\tAuthentication type %d: ", 976 ntohs(NA->a_type)); 977 for (i = 0; 978 i < (int)sizeof(NA->au.au_pw); 979 i++) 980 (void)fprintf(ftrace, "%02x ", 981 NA->au.au_pw[i]); 982 (void)fputc('\n',ftrace); 983 continue; 984 } 985 986 seen_route = 1; 987 if (n->n_family != RIP_AF_INET) { 988 (void)fprintf(ftrace, 989 "\t(af %d) %-18s mask=%#x ", 990 ntohs(n->n_family), 991 naddr_ntoa(n->n_dst), 992 (u_int)ntohl(n->n_mask)); 993 } else if (msg->rip_vers == RIPv1) { 994 (void)fprintf(ftrace, "\t%-18s ", 995 addrname(n->n_dst, 996 ntohl(n->n_mask), 997 n->n_mask==0 ? 2 : 1)); 998 } else { 999 (void)fprintf(ftrace, "\t%-18s ", 1000 addrname(n->n_dst, 1001 ntohl(n->n_mask), 1002 n->n_mask==0 ? 2 : 0)); 1003 } 1004 (void)fprintf(ftrace, "metric=%-2d ", 1005 (u_int)ntohl(n->n_metric)); 1006 if (n->n_nhop != 0) 1007 (void)fprintf(ftrace, " nhop=%s ", 1008 naddr_ntoa(n->n_nhop)); 1009 if (n->n_tag != 0) 1010 (void)fprintf(ftrace, "tag=%#x", 1011 ntohs(n->n_tag)); 1012 (void)fputc('\n',ftrace); 1013 } 1014 if (size != (char *)n - (char *)msg) 1015 (void)fprintf(ftrace, "truncated record, len %d\n", 1016 size); 1017 break; 1018 1019 case RIPCMD_TRACEON: 1020 fprintf(ftrace, "\tfile=\"%.*s\"\n", size-4, 1021 msg->rip_tracefile); 1022 break; 1023 1024 case RIPCMD_TRACEOFF: 1025 break; 1026 } 1027 } 1028