1 /* $NetBSD: trace.c,v 1.26 2001/09/24 13:22:32 wiz Exp $ */ 2 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. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgment: 17 * This product includes software developed by the University of 18 * California, Berkeley and its contributors. 19 * 4. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 */ 35 36 #define RIPCMDS 37 #include "defs.h" 38 #include "pathnames.h" 39 #include <sys/stat.h> 40 #include <sys/signal.h> 41 #include <fcntl.h> 42 43 #ifdef __NetBSD__ 44 __RCSID("$NetBSD: trace.c,v 1.26 2001/09/24 13:22:32 wiz Exp $"); 45 #elif defined(__FreeBSD__) 46 __RCSID("$FreeBSD$"); 47 #else 48 __RCSID("Revision: 2.23 "); 49 #ident "Revision: 2.23 " 50 #endif 51 52 #ifdef sgi 53 /* use *stat64 for files on large filesystems */ 54 #define stat stat64 55 #endif 56 57 #define NRECORDS 50 /* size of circular trace buffer */ 58 59 int tracelevel, new_tracelevel; 60 FILE *ftrace = stdout; /* output trace file */ 61 static const char *sigtrace_pat = "%s"; 62 static char savetracename[MAXPATHLEN+1]; 63 char inittracename[MAXPATHLEN+1]; 64 int file_trace; /* 1=tracing to file, not stdout */ 65 66 static void trace_dump(void); 67 static void tmsg(const char *, ...) PATTRIB(1,2); 68 69 70 /* convert string to printable characters 71 */ 72 static char * 73 qstring(u_char *s, int len) 74 { 75 static char buf[8*20+1]; 76 char *p; 77 u_char *s2, c; 78 79 80 for (p = buf; len != 0 && p < &buf[sizeof(buf)-1]; len--) { 81 c = *s++; 82 if (c == '\0') { 83 for (s2 = s+1; s2 < &s[len]; s2++) { 84 if (*s2 != '\0') 85 break; 86 } 87 if (s2 >= &s[len]) 88 goto exit; 89 } 90 91 if (c >= ' ' && c < 0x7f && c != '\\') { 92 *p++ = c; 93 continue; 94 } 95 *p++ = '\\'; 96 switch (c) { 97 case '\\': 98 *p++ = '\\'; 99 break; 100 case '\n': 101 *p++= 'n'; 102 break; 103 case '\r': 104 *p++= 'r'; 105 break; 106 case '\t': 107 *p++ = 't'; 108 break; 109 case '\b': 110 *p++ = 'b'; 111 break; 112 default: 113 p += sprintf(p,"%o",c); 114 break; 115 } 116 } 117 exit: 118 *p = '\0'; 119 return buf; 120 } 121 122 123 /* convert IP address to a string, but not into a single buffer 124 */ 125 char * 126 naddr_ntoa(naddr a) 127 { 128 #define NUM_BUFS 4 129 static int bufno; 130 static struct { 131 char str[16]; /* xxx.xxx.xxx.xxx\0 */ 132 } bufs[NUM_BUFS]; 133 char *s; 134 struct in_addr addr; 135 136 addr.s_addr = a; 137 s = strcpy(bufs[bufno].str, inet_ntoa(addr)); 138 bufno = (bufno+1) % NUM_BUFS; 139 return s; 140 #undef NUM_BUFS 141 } 142 143 144 const char * 145 saddr_ntoa(struct sockaddr *sa) 146 { 147 return (sa == 0) ? "?" : naddr_ntoa(S_ADDR(sa)); 148 } 149 150 151 static char * 152 ts(time_t secs) { 153 static char s[20]; 154 155 secs += epoch.tv_sec; 156 #ifdef sgi 157 (void)cftime(s, "%T", &secs); 158 #else 159 memcpy(s, ctime(&secs)+11, 8); 160 s[8] = '\0'; 161 #endif 162 return s; 163 } 164 165 166 /* On each event, display a time stamp. 167 * This assumes that 'now' is update once for each event, and 168 * that at least now.tv_usec changes. 169 */ 170 static struct timeval lastlog_time; 171 172 void 173 lastlog(void) 174 { 175 if (lastlog_time.tv_sec != now.tv_sec 176 || lastlog_time.tv_usec != now.tv_usec) { 177 (void)fprintf(ftrace, "-- %s --\n", ts(now.tv_sec)); 178 lastlog_time = now; 179 } 180 } 181 182 183 static void 184 tmsg(const char *p, ...) 185 { 186 va_list args; 187 188 if (ftrace != 0) { 189 lastlog(); 190 va_start(args, p); 191 vfprintf(ftrace, p, args); 192 va_end(args); 193 (void)fputc('\n',ftrace); 194 fflush(ftrace); 195 } 196 } 197 198 199 void 200 trace_close(int zap_stdio) 201 { 202 int fd; 203 204 205 fflush(stdout); 206 fflush(stderr); 207 208 if (ftrace != 0 && zap_stdio) { 209 if (ftrace != stdout) 210 fclose(ftrace); 211 ftrace = 0; 212 fd = open(_PATH_DEVNULL, O_RDWR); 213 if (isatty(STDIN_FILENO)) 214 (void)dup2(fd, STDIN_FILENO); 215 if (isatty(STDOUT_FILENO)) 216 (void)dup2(fd, STDOUT_FILENO); 217 if (isatty(STDERR_FILENO)) 218 (void)dup2(fd, STDERR_FILENO); 219 (void)close(fd); 220 } 221 lastlog_time.tv_sec = 0; 222 } 223 224 225 void 226 trace_flush(void) 227 { 228 if (ftrace != 0) { 229 fflush(ftrace); 230 if (ferror(ftrace)) 231 trace_off("tracing off: %s", strerror(ferror(ftrace))); 232 } 233 } 234 235 236 void 237 trace_off(const char *p, ...) 238 { 239 va_list args; 240 241 242 if (ftrace != 0) { 243 lastlog(); 244 va_start(args, p); 245 vfprintf(ftrace, p, args); 246 va_end(args); 247 (void)fputc('\n',ftrace); 248 } 249 trace_close(file_trace); 250 251 new_tracelevel = tracelevel = 0; 252 } 253 254 255 /* log a change in tracing 256 */ 257 void 258 tracelevel_msg(const char *pat, 259 int dump) /* -1=no dump, 0=default, 1=force */ 260 { 261 static const char *off_msgs[MAX_TRACELEVEL] = { 262 "Tracing actions stopped", 263 "Tracing packets stopped", 264 "Tracing packet contents stopped", 265 "Tracing kernel changes stopped", 266 }; 267 static const char *on_msgs[MAX_TRACELEVEL] = { 268 "Tracing actions started", 269 "Tracing packets started", 270 "Tracing packet contents started", 271 "Tracing kernel changes started", 272 }; 273 u_int old_tracelevel = tracelevel; 274 275 276 if (new_tracelevel < 0) 277 new_tracelevel = 0; 278 else if (new_tracelevel > MAX_TRACELEVEL) 279 new_tracelevel = MAX_TRACELEVEL; 280 281 if (new_tracelevel < tracelevel) { 282 if (new_tracelevel <= 0) { 283 trace_off(pat, off_msgs[0]); 284 } else do { 285 tmsg(pat, off_msgs[tracelevel]); 286 } 287 while (--tracelevel != new_tracelevel); 288 289 } else if (new_tracelevel > tracelevel) { 290 do { 291 tmsg(pat, on_msgs[tracelevel++]); 292 } while (tracelevel != new_tracelevel); 293 } 294 295 if (dump > 0 296 || (dump == 0 && old_tracelevel == 0 && tracelevel != 0)) 297 trace_dump(); 298 } 299 300 301 void 302 set_tracefile(const char *filename, 303 const char *pat, 304 int dump) /* -1=no dump, 0=default, 1=force */ 305 { 306 struct stat stbuf; 307 FILE *n_ftrace; 308 const char *fn; 309 310 311 /* Allow a null filename to increase the level if the trace file 312 * is already open or if coming from a trusted source, such as 313 * a signal or the command line. 314 */ 315 if (filename == 0 || filename[0] == '\0') { 316 filename = 0; 317 if (ftrace == 0) { 318 if (inittracename[0] == '\0') { 319 msglog("missing trace file name"); 320 return; 321 } 322 fn = inittracename; 323 } else { 324 fn = 0; 325 } 326 327 } else if (!strcmp(filename,"dump/../table")) { 328 trace_dump(); 329 return; 330 331 } else { 332 /* Allow the file specified with "-T file" to be reopened, 333 * but require all other names specified over the net to 334 * match the official path. The path can specify a directory 335 * in which the file is to be created. 336 */ 337 if (strcmp(filename, inittracename) 338 #ifdef _PATH_TRACE 339 && (strncmp(filename, _PATH_TRACE, sizeof(_PATH_TRACE)-1) 340 || strstr(filename,"../") 341 || 0 > stat(_PATH_TRACE, &stbuf)) 342 #endif 343 ) { 344 msglog("wrong trace file \"%s\"", filename); 345 return; 346 } 347 348 /* If the new tracefile exists, it must be a regular file. 349 */ 350 if (stat(filename, &stbuf) >= 0 && !S_ISREG(stbuf.st_mode)) { 351 msglog("wrong type (%#x) of trace file \"%s\"", 352 stbuf.st_mode, filename); 353 return; 354 } 355 356 fn = filename; 357 } 358 359 if (fn != 0) { 360 n_ftrace = fopen(fn, "a"); 361 if (n_ftrace == 0) { 362 msglog("failed to open trace file \"%s\" %s", 363 fn, strerror(errno)); 364 if (fn == inittracename) 365 inittracename[0] = '\0'; 366 return; 367 } 368 369 tmsg("switch to trace file %s", fn); 370 371 trace_close(file_trace = 1); 372 373 if (fn != savetracename) 374 strncpy(savetracename, fn, sizeof(savetracename)-1); 375 ftrace = n_ftrace; 376 377 fflush(stdout); 378 fflush(stderr); 379 dup2(fileno(ftrace), STDOUT_FILENO); 380 dup2(fileno(ftrace), STDERR_FILENO); 381 } 382 383 if (new_tracelevel == 0 || filename == 0) 384 new_tracelevel++; 385 tracelevel_msg(pat, dump != 0 ? dump : (filename != 0)); 386 } 387 388 389 /* ARGSUSED */ 390 void 391 sigtrace_on(int s UNUSED) 392 { 393 new_tracelevel++; 394 sigtrace_pat = "SIGUSR1: %s"; 395 } 396 397 398 /* ARGSUSED */ 399 void 400 sigtrace_off(int s UNUSED) 401 { 402 new_tracelevel--; 403 sigtrace_pat = "SIGUSR2: %s"; 404 } 405 406 407 /* Set tracing after a signal. 408 */ 409 void 410 set_tracelevel(void) 411 { 412 if (new_tracelevel == tracelevel) 413 return; 414 415 /* If tracing entirely off, and there was no tracefile specified 416 * on the command line, then leave it off. 417 */ 418 if (new_tracelevel > tracelevel && ftrace == 0) { 419 if (savetracename[0] != '\0') { 420 set_tracefile(savetracename,sigtrace_pat,0); 421 } else if (inittracename[0] != '\0') { 422 set_tracefile(inittracename,sigtrace_pat,0); 423 } else { 424 new_tracelevel = 0; 425 return; 426 } 427 } else { 428 tracelevel_msg(sigtrace_pat, 0); 429 } 430 } 431 432 433 /* display an address 434 */ 435 char * 436 addrname(naddr addr, /* in network byte order */ 437 naddr mask, 438 int force) /* 0=show mask if nonstandard, */ 439 { /* 1=always show mask, 2=never */ 440 #define NUM_BUFS 4 441 static int bufno; 442 static struct { 443 char str[15+20]; 444 } bufs[NUM_BUFS]; 445 char *s, *sp; 446 naddr dmask; 447 int i; 448 449 s = strcpy(bufs[bufno].str, naddr_ntoa(addr)); 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)sprintf(sp, "/%d", 32-i); 460 461 } else { 462 (void)sprintf(sp, " (mask %#x)", (u_int)mask); 463 } 464 } 465 466 return s; 467 #undef NUM_BUFS 468 } 469 470 471 /* display a bit-field 472 */ 473 struct bits { 474 u_int bits_mask; 475 u_int bits_clear; 476 const char *bits_name; 477 }; 478 479 static struct bits if_bits[] = { 480 { IFF_LOOPBACK, 0, "LOOPBACK" }, 481 { IFF_POINTOPOINT, 0, "PT-TO-PT" }, 482 { 0, 0, 0} 483 }; 484 485 static struct bits is_bits[] = { 486 { IS_ALIAS, 0, "ALIAS" }, 487 { IS_SUBNET, 0, "" }, 488 { IS_REMOTE, (IS_NO_RDISC 489 | IS_BCAST_RDISC), "REMOTE" }, 490 { IS_PASSIVE, (IS_NO_RDISC 491 | IS_NO_RIP 492 | IS_NO_SUPER_AG 493 | IS_PM_RDISC 494 | IS_NO_AG), "PASSIVE" }, 495 { IS_EXTERNAL, 0, "EXTERNAL" }, 496 { IS_CHECKED, 0, "" }, 497 { IS_ALL_HOSTS, 0, "" }, 498 { IS_ALL_ROUTERS, 0, "" }, 499 { IS_DISTRUST, 0, "DISTRUST" }, 500 { IS_BROKE, IS_SICK, "BROKEN" }, 501 { IS_SICK, 0, "SICK" }, 502 { IS_DUP, 0, "DUPLICATE" }, 503 { IS_REDIRECT_OK, 0, "REDIRECT_OK" }, 504 { IS_NEED_NET_SYN, 0, "" }, 505 { IS_NO_AG, IS_NO_SUPER_AG, "NO_AG" }, 506 { IS_NO_SUPER_AG, 0, "NO_SUPER_AG" }, 507 { (IS_NO_RIPV1_IN 508 | IS_NO_RIPV2_IN 509 | IS_NO_RIPV1_OUT 510 | IS_NO_RIPV2_OUT), 0, "NO_RIP" }, 511 { (IS_NO_RIPV1_IN 512 | IS_NO_RIPV1_OUT), 0, "RIPV2" }, 513 { IS_NO_RIPV1_IN, 0, "NO_RIPV1_IN" }, 514 { IS_NO_RIPV2_IN, 0, "NO_RIPV2_IN" }, 515 { IS_NO_RIPV1_OUT, 0, "NO_RIPV1_OUT" }, 516 { IS_NO_RIPV2_OUT, 0, "NO_RIPV2_OUT" }, 517 { (IS_NO_ADV_IN 518 | IS_NO_SOL_OUT 519 | IS_NO_ADV_OUT), IS_BCAST_RDISC, "NO_RDISC" }, 520 { IS_NO_SOL_OUT, 0, "NO_SOLICIT" }, 521 { IS_SOL_OUT, 0, "SEND_SOLICIT" }, 522 { IS_NO_ADV_OUT, IS_BCAST_RDISC, "NO_RDISC_ADV" }, 523 { IS_ADV_OUT, 0, "RDISC_ADV" }, 524 { IS_BCAST_RDISC, 0, "BCAST_RDISC" }, 525 { IS_PM_RDISC, 0, "" }, 526 { 0, 0, "%#x"} 527 }; 528 529 static struct bits rs_bits[] = { 530 { RS_IF, 0, "IF" }, 531 { RS_NET_INT, RS_NET_SYN, "NET_INT" }, 532 { RS_NET_SYN, 0, "NET_SYN" }, 533 { RS_SUBNET, 0, "" }, 534 { RS_LOCAL, 0, "LOCAL" }, 535 { RS_MHOME, 0, "MHOME" }, 536 { RS_STATIC, 0, "STATIC" }, 537 { RS_RDISC, 0, "RDISC" }, 538 { 0, 0, "%#x"} 539 }; 540 541 542 static void 543 trace_bits(const struct bits *tbl, 544 u_int field, 545 int force) 546 { 547 u_int b; 548 char c; 549 550 if (force) { 551 (void)putc('<', ftrace); 552 c = 0; 553 } else { 554 c = '<'; 555 } 556 557 while (field != 0 558 && (b = tbl->bits_mask) != 0) { 559 if ((b & field) == b) { 560 if (tbl->bits_name[0] != '\0') { 561 if (c) 562 (void)putc(c, ftrace); 563 (void)fprintf(ftrace, "%s", tbl->bits_name); 564 c = '|'; 565 } 566 if (0 == (field &= ~(b | tbl->bits_clear))) 567 break; 568 } 569 tbl++; 570 } 571 if (field != 0 && tbl->bits_name != 0) { 572 if (c) 573 (void)putc(c, ftrace); 574 (void)fprintf(ftrace, tbl->bits_name, field); 575 c = '|'; 576 } 577 578 if (c != '<' || force) 579 (void)fputs("> ", ftrace); 580 } 581 582 583 char * 584 rtname(naddr dst, 585 naddr mask, 586 naddr gate) 587 { 588 static char buf[3*4+3+1+2+3 /* "xxx.xxx.xxx.xxx/xx-->" */ 589 +3*4+3+1]; /* "xxx.xxx.xxx.xxx" */ 590 int i; 591 592 i = sprintf(buf, "%-16s-->", addrname(dst, mask, 0)); 593 (void)sprintf(&buf[i], "%-*s", 15+20-MAX(20,i), naddr_ntoa(gate)); 594 return buf; 595 } 596 597 598 static void 599 print_rts(struct rt_spare *rts, 600 int force_metric, /* -1=suppress, 0=default */ 601 int force_ifp, /* -1=suppress, 0=default */ 602 int force_router, /* -1=suppress, 0=default, 1=display */ 603 int force_tag, /* -1=suppress, 0=default, 1=display */ 604 int force_time) /* 0=suppress, 1=display */ 605 { 606 int i; 607 608 609 if (force_metric >= 0) 610 (void)fprintf(ftrace, "metric=%-2d ", rts->rts_metric); 611 if (force_ifp >= 0) 612 (void)fprintf(ftrace, "%s ", (rts->rts_ifp == 0 ? 613 "if?" : rts->rts_ifp->int_name)); 614 if (force_router > 0 615 || (force_router == 0 && rts->rts_router != rts->rts_gate)) 616 (void)fprintf(ftrace, "router=%s ", 617 naddr_ntoa(rts->rts_router)); 618 if (force_time > 0) 619 (void)fprintf(ftrace, "%s ", ts(rts->rts_time)); 620 if (force_tag > 0 621 || (force_tag == 0 && rts->rts_tag != 0)) 622 (void)fprintf(ftrace, "tag=%#x ", ntohs(rts->rts_tag)); 623 if (rts->rts_de_ag != 0) { 624 for (i = 1; (u_int)(1 << i) <= rts->rts_de_ag; i++) 625 continue; 626 (void)fprintf(ftrace, "de_ag=%d ", i); 627 } 628 629 } 630 631 632 void 633 trace_if(const char *act, 634 struct interface *ifp) 635 { 636 if (!TRACEACTIONS || ftrace == 0) 637 return; 638 639 lastlog(); 640 (void)fprintf(ftrace, "%-3s interface %-4s ", act, ifp->int_name); 641 (void)fprintf(ftrace, "%-15s-->%-15s ", 642 naddr_ntoa(ifp->int_addr), 643 addrname(((ifp->int_if_flags & IFF_POINTOPOINT) 644 ? ifp->int_dstaddr 645 : htonl(ifp->int_net)), 646 ifp->int_mask, 1)); 647 if (ifp->int_metric != 0) 648 (void)fprintf(ftrace, "metric=%d ", ifp->int_metric); 649 if (!IS_RIP_OUT_OFF(ifp->int_state) 650 && ifp->int_d_metric != 0) 651 (void)fprintf(ftrace, "fake_default=%d ", ifp->int_d_metric); 652 trace_bits(if_bits, ifp->int_if_flags, 0); 653 trace_bits(is_bits, ifp->int_state, 0); 654 (void)fputc('\n',ftrace); 655 } 656 657 658 void 659 trace_upslot(struct rt_entry *rt, 660 struct rt_spare *rts, 661 struct rt_spare *new) 662 { 663 if (!TRACEACTIONS || ftrace == 0) 664 return; 665 666 if (rts->rts_gate == new->rts_gate 667 && rts->rts_router == new->rts_router 668 && rts->rts_metric == new->rts_metric 669 && rts->rts_tag == new->rts_tag 670 && rts->rts_de_ag == new->rts_de_ag) 671 return; 672 673 lastlog(); 674 if (new->rts_gate == 0) { 675 (void)fprintf(ftrace, "Del #%d %-35s ", 676 (int)(rts - rt->rt_spares), 677 rtname(rt->rt_dst, rt->rt_mask, rts->rts_gate)); 678 print_rts(rts, 0,0,0,0, 679 (rts != rt->rt_spares 680 || AGE_RT(rt->rt_state,new->rts_ifp))); 681 682 } else if (rts->rts_gate != RIP_DEFAULT) { 683 (void)fprintf(ftrace, "Chg #%d %-35s ", 684 (int)(rts - rt->rt_spares), 685 rtname(rt->rt_dst, rt->rt_mask, rts->rts_gate)); 686 print_rts(rts, 0,0, 687 rts->rts_gate != new->rts_gate, 688 rts->rts_tag != new->rts_tag, 689 rts != rt->rt_spares || AGE_RT(rt->rt_state, 690 rt->rt_ifp)); 691 692 (void)fprintf(ftrace, "\n %19s%-16s ", "", 693 (new->rts_gate != rts->rts_gate 694 ? naddr_ntoa(new->rts_gate) : "")); 695 print_rts(new, 696 -(new->rts_metric == rts->rts_metric), 697 -(new->rts_ifp == rts->rts_ifp), 698 0, 699 rts->rts_tag != new->rts_tag, 700 (new->rts_time != rts->rts_time 701 && (rts != rt->rt_spares 702 || AGE_RT(rt->rt_state, new->rts_ifp)))); 703 704 } else { 705 (void)fprintf(ftrace, "Add #%d %-35s ", 706 (int)(rts - rt->rt_spares), 707 rtname(rt->rt_dst, rt->rt_mask, new->rts_gate)); 708 print_rts(new, 0,0,0,0, 709 (rts != rt->rt_spares 710 || AGE_RT(rt->rt_state,new->rts_ifp))); 711 } 712 (void)fputc('\n',ftrace); 713 } 714 715 716 /* miscellaneous message checked by the caller 717 */ 718 void 719 trace_misc(const char *p, ...) 720 { 721 va_list args; 722 723 if (ftrace == 0) 724 return; 725 726 lastlog(); 727 va_start(args, p); 728 vfprintf(ftrace, p, args); 729 va_end(args); 730 (void)fputc('\n',ftrace); 731 } 732 733 734 /* display a message if tracing actions 735 */ 736 void 737 trace_act(const char *p, ...) 738 { 739 va_list args; 740 741 if (!TRACEACTIONS || ftrace == 0) 742 return; 743 744 lastlog(); 745 va_start(args, p); 746 vfprintf(ftrace, p, args); 747 va_end(args); 748 (void)fputc('\n',ftrace); 749 } 750 751 752 /* display a message if tracing packets 753 */ 754 void 755 trace_pkt(const char *p, ...) 756 { 757 va_list args; 758 759 if (!TRACEPACKETS || ftrace == 0) 760 return; 761 762 lastlog(); 763 va_start(args, p); 764 vfprintf(ftrace, p, args); 765 va_end(args); 766 (void)fputc('\n',ftrace); 767 } 768 769 770 void 771 trace_change(struct rt_entry *rt, 772 u_int state, 773 struct rt_spare *new, 774 const char *label) 775 { 776 if (ftrace == 0) 777 return; 778 779 if (rt->rt_metric == new->rts_metric 780 && rt->rt_gate == new->rts_gate 781 && rt->rt_router == new->rts_router 782 && rt->rt_state == state 783 && rt->rt_tag == new->rts_tag 784 && rt->rt_de_ag == new->rts_de_ag) 785 return; 786 787 lastlog(); 788 (void)fprintf(ftrace, "%s %-35s ", 789 label, 790 rtname(rt->rt_dst, rt->rt_mask, rt->rt_gate)); 791 print_rts(rt->rt_spares, 792 0,0,0,0, AGE_RT(rt->rt_state, rt->rt_ifp)); 793 trace_bits(rs_bits, rt->rt_state, rt->rt_state != state); 794 795 (void)fprintf(ftrace, "\n%*s %19s%-16s ", 796 (int)strlen(label), "", "", 797 (rt->rt_gate != new->rts_gate 798 ? naddr_ntoa(new->rts_gate) : "")); 799 print_rts(new, 800 -(new->rts_metric == rt->rt_metric), 801 -(new->rts_ifp == rt->rt_ifp), 802 0, 803 rt->rt_tag != new->rts_tag, 804 (rt->rt_time != new->rts_time 805 && AGE_RT(rt->rt_state,new->rts_ifp))); 806 if (rt->rt_state != state) 807 trace_bits(rs_bits, state, 1); 808 (void)fputc('\n',ftrace); 809 } 810 811 812 void 813 trace_add_del(const char * action, struct rt_entry *rt) 814 { 815 if (ftrace == 0) 816 return; 817 818 lastlog(); 819 (void)fprintf(ftrace, "%s %-35s ", 820 action, 821 rtname(rt->rt_dst, rt->rt_mask, rt->rt_gate)); 822 print_rts(rt->rt_spares, 0,0,0,0,AGE_RT(rt->rt_state,rt->rt_ifp)); 823 trace_bits(rs_bits, rt->rt_state, 0); 824 (void)fputc('\n',ftrace); 825 } 826 827 828 /* ARGSUSED */ 829 static int 830 walk_trace(struct radix_node *rn, 831 struct walkarg *w UNUSED) 832 { 833 #define RT ((struct rt_entry *)rn) 834 struct rt_spare *rts; 835 int i; 836 837 (void)fprintf(ftrace, " %-35s ", 838 rtname(RT->rt_dst, RT->rt_mask, RT->rt_gate)); 839 print_rts(&RT->rt_spares[0], 0,0,0,0, AGE_RT(RT->rt_state, RT->rt_ifp)); 840 trace_bits(rs_bits, RT->rt_state, 0); 841 if (RT->rt_poison_time >= now_garbage 842 && RT->rt_poison_metric < RT->rt_metric) 843 (void)fprintf(ftrace, "pm=%d@%s", 844 RT->rt_poison_metric, ts(RT->rt_poison_time)); 845 846 rts = &RT->rt_spares[1]; 847 for (i = 1; i < NUM_SPARES; i++, rts++) { 848 if (rts->rts_gate != RIP_DEFAULT) { 849 (void)fprintf(ftrace,"\n #%d%15s%-16s ", 850 i, "", naddr_ntoa(rts->rts_gate)); 851 print_rts(rts, 0,0,0,0,1); 852 } 853 } 854 (void)fputc('\n',ftrace); 855 856 return 0; 857 } 858 859 860 static void 861 trace_dump(void) 862 { 863 struct interface *ifp; 864 865 if (ftrace == 0) 866 return; 867 lastlog(); 868 869 (void)fputs("current daemon state:\n", ftrace); 870 for (ifp = ifnet; ifp != 0; ifp = ifp->int_next) 871 trace_if("", ifp); 872 (void)rn_walktree(rhead, walk_trace, 0); 873 } 874 875 876 void 877 trace_rip(const char *dir1, const char *dir2, 878 struct sockaddr_in *who, 879 struct interface *ifp, 880 struct rip *msg, 881 int size) /* total size of message */ 882 { 883 struct netinfo *n, *lim; 884 # define NA ((struct netauth*)n) 885 int i, seen_route; 886 887 if (!TRACEPACKETS || ftrace == 0) 888 return; 889 890 lastlog(); 891 if (msg->rip_cmd >= RIPCMD_MAX 892 || msg->rip_vers == 0) { 893 (void)fprintf(ftrace, "%s bad RIPv%d cmd=%d %s" 894 " %s.%d size=%d\n", 895 dir1, msg->rip_vers, msg->rip_cmd, dir2, 896 naddr_ntoa(who->sin_addr.s_addr), 897 ntohs(who->sin_port), 898 size); 899 return; 900 } 901 902 (void)fprintf(ftrace, "%s RIPv%d %s %s %s.%d%s%s\n", 903 dir1, msg->rip_vers, ripcmds[msg->rip_cmd], dir2, 904 naddr_ntoa(who->sin_addr.s_addr), ntohs(who->sin_port), 905 ifp ? " via " : "", ifp ? ifp->int_name : ""); 906 if (!TRACECONTENTS) 907 return; 908 909 seen_route = 0; 910 switch (msg->rip_cmd) { 911 case RIPCMD_REQUEST: 912 case RIPCMD_RESPONSE: 913 n = msg->rip_nets; 914 lim = (struct netinfo *)((char*)msg + size); 915 for (; n < lim; n++) { 916 if (!seen_route 917 && n->n_family == RIP_AF_UNSPEC 918 && ntohl(n->n_metric) == HOPCNT_INFINITY 919 && msg->rip_cmd == RIPCMD_REQUEST 920 && (n+1 == lim 921 || (n+2 == lim 922 && (n+1)->n_family == RIP_AF_AUTH))) { 923 (void)fputs("\tQUERY ", ftrace); 924 if (n->n_dst != 0) 925 (void)fprintf(ftrace, "%s ", 926 naddr_ntoa(n->n_dst)); 927 if (n->n_mask != 0) 928 (void)fprintf(ftrace, "mask=%#x ", 929 (u_int)ntohl(n->n_mask)); 930 if (n->n_nhop != 0) 931 (void)fprintf(ftrace, "nhop=%s ", 932 naddr_ntoa(n->n_nhop)); 933 if (n->n_tag != 0) 934 (void)fprintf(ftrace, "tag=%#x ", 935 ntohs(n->n_tag)); 936 (void)fputc('\n',ftrace); 937 continue; 938 } 939 940 if (n->n_family == RIP_AF_AUTH) { 941 if (NA->a_type == RIP_AUTH_PW 942 && n == msg->rip_nets) { 943 (void)fprintf(ftrace, "\tPassword" 944 " Authentication:" 945 " \"%s\"\n", 946 qstring(NA->au.au_pw, 947 RIP_AUTH_PW_LEN)); 948 continue; 949 } 950 951 if (NA->a_type == RIP_AUTH_MD5 952 && n == msg->rip_nets) { 953 (void)fprintf(ftrace, 954 "\tMD5 Auth" 955 " pkt_len=%d KeyID=%u" 956 " auth_len=%d" 957 " seqno=%#x" 958 " rsvd=%#x,%#x\n", 959 ntohs(NA->au.a_md5.md5_pkt_len), 960 NA->au.a_md5.md5_keyid, 961 NA->au.a_md5.md5_auth_len, 962 (int)ntohl(NA->au.a_md5.md5_seqno), 963 (int)ntohs(NA->au.a_md5.rsvd[0]), 964 (int)ntohs(NA->au.a_md5.rsvd[1])); 965 continue; 966 } 967 (void)fprintf(ftrace, 968 "\tAuthentication type %d: ", 969 ntohs(NA->a_type)); 970 for (i = 0; 971 i < (int)sizeof(NA->au.au_pw); 972 i++) 973 (void)fprintf(ftrace, "%02x ", 974 NA->au.au_pw[i]); 975 (void)fputc('\n',ftrace); 976 continue; 977 } 978 979 seen_route = 1; 980 if (n->n_family != RIP_AF_INET) { 981 (void)fprintf(ftrace, 982 "\t(af %d) %-18s mask=%#x ", 983 ntohs(n->n_family), 984 naddr_ntoa(n->n_dst), 985 (u_int)ntohl(n->n_mask)); 986 } else if (msg->rip_vers == RIPv1) { 987 (void)fprintf(ftrace, "\t%-18s ", 988 addrname(n->n_dst, 989 ntohl(n->n_mask), 990 n->n_mask==0 ? 2 : 1)); 991 } else { 992 (void)fprintf(ftrace, "\t%-18s ", 993 addrname(n->n_dst, 994 ntohl(n->n_mask), 995 n->n_mask==0 ? 2 : 0)); 996 } 997 (void)fprintf(ftrace, "metric=%-2d ", 998 (u_int)ntohl(n->n_metric)); 999 if (n->n_nhop != 0) 1000 (void)fprintf(ftrace, " nhop=%s ", 1001 naddr_ntoa(n->n_nhop)); 1002 if (n->n_tag != 0) 1003 (void)fprintf(ftrace, "tag=%#x", 1004 ntohs(n->n_tag)); 1005 (void)fputc('\n',ftrace); 1006 } 1007 if (size != (char *)n - (char *)msg) 1008 (void)fprintf(ftrace, "truncated record, len %d\n", 1009 size); 1010 break; 1011 1012 case RIPCMD_TRACEON: 1013 fprintf(ftrace, "\tfile=\"%.*s\"\n", size-4, 1014 msg->rip_tracefile); 1015 break; 1016 1017 case RIPCMD_TRACEOFF: 1018 break; 1019 } 1020 } 1021