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