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