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