trace.c revision 1.24
1 /* $NetBSD: trace.c,v 1.24 2000/03/02 21:02:01 christos 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 #if !defined(lint) && !defined(sgi) && !defined(__NetBSD__) 37 static char sccsid[] __attribute__((unused)) = "@(#)trace.c 8.1 (Berkeley) 6/5/93"; 38 #elif defined(__NetBSD__) 39 #include <sys/cdefs.h> 40 __RCSID("$NetBSD: trace.c,v 1.24 2000/03/02 21:02:01 christos Exp $"); 41 #endif 42 43 #define RIPCMDS 44 #include "defs.h" 45 #include "pathnames.h" 46 #include <sys/stat.h> 47 #include <sys/signal.h> 48 #include <fcntl.h> 49 50 51 #ifdef sgi 52 /* use *stat64 for files on large filesystems */ 53 #define stat stat64 54 #endif 55 56 #define NRECORDS 50 /* size of circular trace buffer */ 57 58 int tracelevel, new_tracelevel; 59 FILE *ftrace = stdout; /* output trace file */ 60 static const char *sigtrace_pat = "%s"; 61 static char savetracename[MAXPATHLEN+1]; 62 char inittracename[MAXPATHLEN+1]; 63 int file_trace; /* 1=tracing to file, not stdout */ 64 65 static void trace_dump(void); 66 static void tmsg(const char *, ...) PATTRIB(1,2); 67 68 69 /* convert string to printable characters 70 */ 71 static char * 72 qstring(u_char *s, int len) 73 { 74 static char buf[8*20+1]; 75 char *p; 76 u_char *s2, c; 77 78 79 for (p = buf; len != 0 && p < &buf[sizeof(buf)-1]; len--) { 80 c = *s++; 81 if (c == '\0') { 82 for (s2 = s+1; s2 < &s[len]; s2++) { 83 if (*s2 != '\0') 84 break; 85 } 86 if (s2 >= &s[len]) 87 goto exit; 88 } 89 90 if (c >= ' ' && c < 0x7f && c != '\\') { 91 *p++ = c; 92 continue; 93 } 94 *p++ = '\\'; 95 switch (c) { 96 case '\\': 97 *p++ = '\\'; 98 break; 99 case '\n': 100 *p++= 'n'; 101 break; 102 case '\r': 103 *p++= 'r'; 104 break; 105 case '\t': 106 *p++ = 't'; 107 break; 108 case '\b': 109 *p++ = 'b'; 110 break; 111 default: 112 p += sprintf(p,"%o",c); 113 break; 114 } 115 } 116 exit: 117 *p = '\0'; 118 return buf; 119 } 120 121 122 /* convert IP address to a string, but not into a single buffer 123 */ 124 char * 125 naddr_ntoa(naddr a) 126 { 127 #define NUM_BUFS 4 128 static int bufno; 129 static struct { 130 char str[16]; /* xxx.xxx.xxx.xxx\0 */ 131 } bufs[NUM_BUFS]; 132 char *s; 133 struct in_addr addr; 134 135 addr.s_addr = a; 136 s = strcpy(bufs[bufno].str, inet_ntoa(addr)); 137 bufno = (bufno+1) % NUM_BUFS; 138 return s; 139 #undef NUM_BUFS 140 } 141 142 143 const char * 144 saddr_ntoa(struct sockaddr *sa) 145 { 146 return (sa == 0) ? "?" : naddr_ntoa(S_ADDR(sa)); 147 } 148 149 150 static char * 151 ts(time_t secs) { 152 static char s[20]; 153 154 secs += epoch.tv_sec; 155 #ifdef sgi 156 (void)cftime(s, "%T", &secs); 157 #else 158 memcpy(s, ctime(&secs)+11, 8); 159 s[8] = '\0'; 160 #endif 161 return s; 162 } 163 164 165 /* On each event, display a time stamp. 166 * This assumes that 'now' is update once for each event, and 167 * that at least now.tv_usec changes. 168 */ 169 static struct timeval lastlog_time; 170 171 void 172 lastlog(void) 173 { 174 if (lastlog_time.tv_sec != now.tv_sec 175 || lastlog_time.tv_usec != now.tv_usec) { 176 (void)fprintf(ftrace, "-- %s --\n", ts(now.tv_sec)); 177 lastlog_time = now; 178 } 179 } 180 181 182 static void 183 tmsg(const char *p, ...) 184 { 185 va_list args; 186 187 if (ftrace != 0) { 188 lastlog(); 189 va_start(args, p); 190 vfprintf(ftrace, p, 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 (void)fputc('\n',ftrace); 245 } 246 trace_close(file_trace); 247 248 new_tracelevel = tracelevel = 0; 249 } 250 251 252 /* log a change in tracing 253 */ 254 void 255 tracelevel_msg(const char *pat, 256 int dump) /* -1=no dump, 0=default, 1=force */ 257 { 258 static const char *off_msgs[MAX_TRACELEVEL] = { 259 "Tracing actions stopped", 260 "Tracing packets stopped", 261 "Tracing packet contents stopped", 262 "Tracing kernel changes stopped", 263 }; 264 static const char *on_msgs[MAX_TRACELEVEL] = { 265 "Tracing actions started", 266 "Tracing packets started", 267 "Tracing packet contents started", 268 "Tracing kernel changes started", 269 }; 270 u_int old_tracelevel = tracelevel; 271 272 273 if (new_tracelevel < 0) 274 new_tracelevel = 0; 275 else if (new_tracelevel > MAX_TRACELEVEL) 276 new_tracelevel = MAX_TRACELEVEL; 277 278 if (new_tracelevel < tracelevel) { 279 if (new_tracelevel <= 0) { 280 trace_off(pat, off_msgs[0]); 281 } else do { 282 tmsg(pat, off_msgs[tracelevel]); 283 } 284 while (--tracelevel != new_tracelevel); 285 286 } else if (new_tracelevel > tracelevel) { 287 do { 288 tmsg(pat, on_msgs[tracelevel++]); 289 } while (tracelevel != new_tracelevel); 290 } 291 292 if (dump > 0 293 || (dump == 0 && old_tracelevel == 0 && tracelevel != 0)) 294 trace_dump(); 295 } 296 297 298 void 299 set_tracefile(const char *filename, 300 const char *pat, 301 int dump) /* -1=no dump, 0=default, 1=force */ 302 { 303 struct stat stbuf; 304 FILE *n_ftrace; 305 const char *fn; 306 307 308 /* Allow a null filename to increase the level if the trace file 309 * is already open or if coming from a trusted source, such as 310 * a signal or the command line. 311 */ 312 if (filename == 0 || filename[0] == '\0') { 313 filename = 0; 314 if (ftrace == 0) { 315 if (inittracename[0] == '\0') { 316 msglog("missing trace file name"); 317 return; 318 } 319 fn = inittracename; 320 } else { 321 fn = 0; 322 } 323 324 } else if (!strcmp(filename,"dump/../table")) { 325 trace_dump(); 326 return; 327 328 } else { 329 /* Allow the file specified with "-T file" to be reopened, 330 * but require all other names specified over the net to 331 * match the official path. The path can specify a directory 332 * in which the file is to be created. 333 */ 334 if (strcmp(filename, inittracename) 335 #ifdef _PATH_TRACE 336 && (strncmp(filename, _PATH_TRACE, sizeof(_PATH_TRACE)-1) 337 || strstr(filename,"../") 338 || 0 > stat(_PATH_TRACE, &stbuf)) 339 #endif 340 ) { 341 msglog("wrong trace file \"%s\"", filename); 342 return; 343 } 344 345 /* If the new tracefile exists, it must be a regular file. 346 */ 347 if (stat(filename, &stbuf) >= 0 && !S_ISREG(stbuf.st_mode)) { 348 msglog("wrong type (%#x) of trace file \"%s\"", 349 stbuf.st_mode, filename); 350 return; 351 } 352 353 fn = filename; 354 } 355 356 if (fn != 0) { 357 n_ftrace = fopen(fn, "a"); 358 if (n_ftrace == 0) { 359 msglog("failed to open trace file \"%s\" %s", 360 fn, strerror(errno)); 361 if (fn == inittracename) 362 inittracename[0] = '\0'; 363 return; 364 } 365 366 tmsg("switch to trace file %s", fn); 367 368 trace_close(file_trace = 1); 369 370 if (fn != savetracename) 371 strncpy(savetracename, fn, sizeof(savetracename)-1); 372 ftrace = n_ftrace; 373 374 fflush(stdout); 375 fflush(stderr); 376 dup2(fileno(ftrace), STDOUT_FILENO); 377 dup2(fileno(ftrace), STDERR_FILENO); 378 } 379 380 if (new_tracelevel == 0 || filename == 0) 381 new_tracelevel++; 382 tracelevel_msg(pat, dump != 0 ? dump : (filename != 0)); 383 } 384 385 386 /* ARGSUSED */ 387 void 388 sigtrace_on(int s UNUSED) 389 { 390 new_tracelevel++; 391 sigtrace_pat = "SIGUSR1: %s"; 392 } 393 394 395 /* ARGSUSED */ 396 void 397 sigtrace_off(int s UNUSED) 398 { 399 new_tracelevel--; 400 sigtrace_pat = "SIGUSR2: %s"; 401 } 402 403 404 /* Set tracing after a signal. 405 */ 406 void 407 set_tracelevel(void) 408 { 409 if (new_tracelevel == tracelevel) 410 return; 411 412 /* If tracing entirely off, and there was no tracefile specified 413 * on the command line, then leave it off. 414 */ 415 if (new_tracelevel > tracelevel && ftrace == 0) { 416 if (savetracename[0] != '\0') { 417 set_tracefile(savetracename,sigtrace_pat,0); 418 } else if (inittracename[0] != '\0') { 419 set_tracefile(inittracename,sigtrace_pat,0); 420 } else { 421 new_tracelevel = 0; 422 return; 423 } 424 } else { 425 tracelevel_msg(sigtrace_pat, 0); 426 } 427 } 428 429 430 /* display an address 431 */ 432 char * 433 addrname(naddr addr, /* in network byte order */ 434 naddr mask, 435 int force) /* 0=show mask if nonstandard, */ 436 { /* 1=always show mask, 2=never */ 437 #define NUM_BUFS 4 438 static int bufno; 439 static struct { 440 char str[15+20]; 441 } bufs[NUM_BUFS]; 442 char *s, *sp; 443 naddr dmask; 444 int i; 445 446 s = strcpy(bufs[bufno].str, naddr_ntoa(addr)); 447 bufno = (bufno+1) % NUM_BUFS; 448 449 if (force == 1 || (force == 0 && mask != std_mask(addr))) { 450 sp = &s[strlen(s)]; 451 452 dmask = mask & -mask; 453 if (mask + dmask == 0) { 454 for (i = 0; i != 32 && ((1<<i) & mask) == 0; i++) 455 continue; 456 (void)sprintf(sp, "/%d", 32-i); 457 458 } else { 459 (void)sprintf(sp, " (mask %#x)", (u_int)mask); 460 } 461 } 462 463 return s; 464 #undef NUM_BUFS 465 } 466 467 468 /* display a bit-field 469 */ 470 struct bits { 471 u_int bits_mask; 472 u_int bits_clear; 473 const char *bits_name; 474 }; 475 476 static struct bits if_bits[] = { 477 { IFF_LOOPBACK, 0, "LOOPBACK" }, 478 { IFF_POINTOPOINT, 0, "PT-TO-PT" }, 479 { 0, 0, 0} 480 }; 481 482 static struct bits is_bits[] = { 483 { IS_ALIAS, 0, "ALIAS" }, 484 { IS_SUBNET, 0, "" }, 485 { IS_REMOTE, (IS_NO_RDISC 486 | IS_BCAST_RDISC), "REMOTE" }, 487 { IS_PASSIVE, (IS_NO_RDISC 488 | IS_NO_RIP 489 | IS_NO_SUPER_AG 490 | IS_PM_RDISC 491 | IS_NO_AG), "PASSIVE" }, 492 { IS_EXTERNAL, 0, "EXTERNAL" }, 493 { IS_CHECKED, 0, "" }, 494 { IS_ALL_HOSTS, 0, "" }, 495 { IS_ALL_ROUTERS, 0, "" }, 496 { IS_DISTRUST, 0, "DISTRUST" }, 497 { IS_BROKE, IS_SICK, "BROKEN" }, 498 { IS_SICK, 0, "SICK" }, 499 { IS_DUP, 0, "DUPLICATE" }, 500 { IS_REDIRECT_OK, 0, "REDIRECT_OK" }, 501 { IS_NEED_NET_SYN, 0, "" }, 502 { IS_NO_AG, IS_NO_SUPER_AG, "NO_AG" }, 503 { IS_NO_SUPER_AG, 0, "NO_SUPER_AG" }, 504 { (IS_NO_RIPV1_IN 505 | IS_NO_RIPV2_IN 506 | IS_NO_RIPV1_OUT 507 | IS_NO_RIPV2_OUT), 0, "NO_RIP" }, 508 { (IS_NO_RIPV1_IN 509 | IS_NO_RIPV1_OUT), 0, "RIPV2" }, 510 { IS_NO_RIPV1_IN, 0, "NO_RIPV1_IN" }, 511 { IS_NO_RIPV2_IN, 0, "NO_RIPV2_IN" }, 512 { IS_NO_RIPV1_OUT, 0, "NO_RIPV1_OUT" }, 513 { IS_NO_RIPV2_OUT, 0, "NO_RIPV2_OUT" }, 514 { (IS_NO_ADV_IN 515 | IS_NO_SOL_OUT 516 | IS_NO_ADV_OUT), IS_BCAST_RDISC, "NO_RDISC" }, 517 { IS_NO_SOL_OUT, 0, "NO_SOLICIT" }, 518 { IS_SOL_OUT, 0, "SEND_SOLICIT" }, 519 { IS_NO_ADV_OUT, IS_BCAST_RDISC, "NO_RDISC_ADV" }, 520 { IS_ADV_OUT, 0, "RDISC_ADV" }, 521 { IS_BCAST_RDISC, 0, "BCAST_RDISC" }, 522 { IS_PM_RDISC, 0, "" }, 523 { 0, 0, "%#x"} 524 }; 525 526 static struct bits rs_bits[] = { 527 { RS_IF, 0, "IF" }, 528 { RS_NET_INT, RS_NET_SYN, "NET_INT" }, 529 { RS_NET_SYN, 0, "NET_SYN" }, 530 { RS_SUBNET, 0, "" }, 531 { RS_LOCAL, 0, "LOCAL" }, 532 { RS_MHOME, 0, "MHOME" }, 533 { RS_STATIC, 0, "STATIC" }, 534 { RS_RDISC, 0, "RDISC" }, 535 { 0, 0, "%#x"} 536 }; 537 538 539 static void 540 trace_bits(const struct bits *tbl, 541 u_int field, 542 int force) 543 { 544 u_int b; 545 char c; 546 547 if (force) { 548 (void)putc('<', ftrace); 549 c = 0; 550 } else { 551 c = '<'; 552 } 553 554 while (field != 0 555 && (b = tbl->bits_mask) != 0) { 556 if ((b & field) == b) { 557 if (tbl->bits_name[0] != '\0') { 558 if (c) 559 (void)putc(c, ftrace); 560 (void)fprintf(ftrace, "%s", tbl->bits_name); 561 c = '|'; 562 } 563 if (0 == (field &= ~(b | tbl->bits_clear))) 564 break; 565 } 566 tbl++; 567 } 568 if (field != 0 && tbl->bits_name != 0) { 569 if (c) 570 (void)putc(c, ftrace); 571 (void)fprintf(ftrace, tbl->bits_name, field); 572 c = '|'; 573 } 574 575 if (c != '<' || force) 576 (void)fputs("> ", ftrace); 577 } 578 579 580 char * 581 rtname(naddr dst, 582 naddr mask, 583 naddr gate) 584 { 585 static char buf[3*4+3+1+2+3 /* "xxx.xxx.xxx.xxx/xx-->" */ 586 +3*4+3+1]; /* "xxx.xxx.xxx.xxx" */ 587 int i; 588 589 i = sprintf(buf, "%-16s-->", addrname(dst, mask, 0)); 590 (void)sprintf(&buf[i], "%-*s", 15+20-MAX(20,i), naddr_ntoa(gate)); 591 return buf; 592 } 593 594 595 static void 596 print_rts(struct rt_spare *rts, 597 int force_metric, /* -1=suppress, 0=default */ 598 int force_ifp, /* -1=suppress, 0=default */ 599 int force_router, /* -1=suppress, 0=default, 1=display */ 600 int force_tag, /* -1=suppress, 0=default, 1=display */ 601 int force_time) /* 0=suppress, 1=display */ 602 { 603 int i; 604 605 606 if (force_metric >= 0) 607 (void)fprintf(ftrace, "metric=%-2d ", rts->rts_metric); 608 if (force_ifp >= 0) 609 (void)fprintf(ftrace, "%s ", (rts->rts_ifp == 0 ? 610 "if?" : rts->rts_ifp->int_name)); 611 if (force_router > 0 612 || (force_router == 0 && rts->rts_router != rts->rts_gate)) 613 (void)fprintf(ftrace, "router=%s ", 614 naddr_ntoa(rts->rts_router)); 615 if (force_time > 0) 616 (void)fprintf(ftrace, "%s ", ts(rts->rts_time)); 617 if (force_tag > 0 618 || (force_tag == 0 && rts->rts_tag != 0)) 619 (void)fprintf(ftrace, "tag=%#x ", ntohs(rts->rts_tag)); 620 if (rts->rts_de_ag != 0) { 621 for (i = 1; (u_int)(1 << i) <= rts->rts_de_ag; i++) 622 continue; 623 (void)fprintf(ftrace, "de_ag=%d ", i); 624 } 625 626 } 627 628 629 void 630 trace_if(const char *act, 631 struct interface *ifp) 632 { 633 if (!TRACEACTIONS || ftrace == 0) 634 return; 635 636 lastlog(); 637 (void)fprintf(ftrace, "%-3s interface %-4s ", act, ifp->int_name); 638 (void)fprintf(ftrace, "%-15s-->%-15s ", 639 naddr_ntoa(ifp->int_addr), 640 addrname(((ifp->int_if_flags & IFF_POINTOPOINT) 641 ? ifp->int_dstaddr 642 : htonl(ifp->int_net)), 643 ifp->int_mask, 1)); 644 if (ifp->int_metric != 0) 645 (void)fprintf(ftrace, "metric=%d ", ifp->int_metric); 646 if (!IS_RIP_OUT_OFF(ifp->int_state) 647 && ifp->int_d_metric != 0) 648 (void)fprintf(ftrace, "fake_default=%d ", ifp->int_d_metric); 649 trace_bits(if_bits, ifp->int_if_flags, 0); 650 trace_bits(is_bits, ifp->int_state, 0); 651 (void)fputc('\n',ftrace); 652 } 653 654 655 void 656 trace_upslot(struct rt_entry *rt, 657 struct rt_spare *rts, 658 struct rt_spare *new) 659 { 660 if (!TRACEACTIONS || ftrace == 0) 661 return; 662 663 if (rts->rts_gate == new->rts_gate 664 && rts->rts_router == new->rts_router 665 && rts->rts_metric == new->rts_metric 666 && rts->rts_tag == new->rts_tag 667 && rts->rts_de_ag == new->rts_de_ag) 668 return; 669 670 lastlog(); 671 if (new->rts_gate == 0) { 672 (void)fprintf(ftrace, "Del #%d %-35s ", 673 (int)(rts - rt->rt_spares), 674 rtname(rt->rt_dst, rt->rt_mask, rts->rts_gate)); 675 print_rts(rts, 0,0,0,0, 676 (rts != rt->rt_spares 677 || AGE_RT(rt->rt_state,new->rts_ifp))); 678 679 } else if (rts->rts_gate != RIP_DEFAULT) { 680 (void)fprintf(ftrace, "Chg #%d %-35s ", 681 (int)(rts - rt->rt_spares), 682 rtname(rt->rt_dst, rt->rt_mask, rts->rts_gate)); 683 print_rts(rts, 0,0, 684 rts->rts_gate != new->rts_gate, 685 rts->rts_tag != new->rts_tag, 686 rts != rt->rt_spares || AGE_RT(rt->rt_state, 687 rt->rt_ifp)); 688 689 (void)fprintf(ftrace, "\n %19s%-16s ", "", 690 (new->rts_gate != rts->rts_gate 691 ? naddr_ntoa(new->rts_gate) : "")); 692 print_rts(new, 693 -(new->rts_metric == rts->rts_metric), 694 -(new->rts_ifp == rts->rts_ifp), 695 0, 696 rts->rts_tag != new->rts_tag, 697 (new->rts_time != rts->rts_time 698 && (rts != rt->rt_spares 699 || AGE_RT(rt->rt_state, new->rts_ifp)))); 700 701 } else { 702 (void)fprintf(ftrace, "Add #%d %-35s ", 703 (int)(rts - rt->rt_spares), 704 rtname(rt->rt_dst, rt->rt_mask, new->rts_gate)); 705 print_rts(new, 0,0,0,0, 706 (rts != rt->rt_spares 707 || AGE_RT(rt->rt_state,new->rts_ifp))); 708 } 709 (void)fputc('\n',ftrace); 710 } 711 712 713 /* miscellaneous message checked by the caller 714 */ 715 void 716 trace_misc(const char *p, ...) 717 { 718 va_list args; 719 720 if (ftrace == 0) 721 return; 722 723 lastlog(); 724 va_start(args, p); 725 vfprintf(ftrace, p, args); 726 (void)fputc('\n',ftrace); 727 } 728 729 730 /* display a message if tracing actions 731 */ 732 void 733 trace_act(const char *p, ...) 734 { 735 va_list args; 736 737 if (!TRACEACTIONS || ftrace == 0) 738 return; 739 740 lastlog(); 741 va_start(args, p); 742 vfprintf(ftrace, p, args); 743 (void)fputc('\n',ftrace); 744 } 745 746 747 /* display a message if tracing packets 748 */ 749 void 750 trace_pkt(const char *p, ...) 751 { 752 va_list args; 753 754 if (!TRACEPACKETS || ftrace == 0) 755 return; 756 757 lastlog(); 758 va_start(args, p); 759 vfprintf(ftrace, p, args); 760 (void)fputc('\n',ftrace); 761 } 762 763 764 void 765 trace_change(struct rt_entry *rt, 766 u_int state, 767 struct rt_spare *new, 768 const char *label) 769 { 770 if (ftrace == 0) 771 return; 772 773 if (rt->rt_metric == new->rts_metric 774 && rt->rt_gate == new->rts_gate 775 && rt->rt_router == new->rts_router 776 && rt->rt_state == state 777 && rt->rt_tag == new->rts_tag 778 && rt->rt_de_ag == new->rts_de_ag) 779 return; 780 781 lastlog(); 782 (void)fprintf(ftrace, "%s %-35s ", 783 label, 784 rtname(rt->rt_dst, rt->rt_mask, rt->rt_gate)); 785 print_rts(rt->rt_spares, 786 0,0,0,0, AGE_RT(rt->rt_state, rt->rt_ifp)); 787 trace_bits(rs_bits, rt->rt_state, rt->rt_state != state); 788 789 (void)fprintf(ftrace, "\n%*s %19s%-16s ", 790 (int)strlen(label), "", "", 791 (rt->rt_gate != new->rts_gate 792 ? naddr_ntoa(new->rts_gate) : "")); 793 print_rts(new, 794 -(new->rts_metric == rt->rt_metric), 795 -(new->rts_ifp == rt->rt_ifp), 796 0, 797 rt->rt_tag != new->rts_tag, 798 (rt->rt_time != new->rts_time 799 && AGE_RT(rt->rt_state,new->rts_ifp))); 800 if (rt->rt_state != state) 801 trace_bits(rs_bits, state, 1); 802 (void)fputc('\n',ftrace); 803 } 804 805 806 void 807 trace_add_del(const char * action, struct rt_entry *rt) 808 { 809 if (ftrace == 0) 810 return; 811 812 lastlog(); 813 (void)fprintf(ftrace, "%s %-35s ", 814 action, 815 rtname(rt->rt_dst, rt->rt_mask, rt->rt_gate)); 816 print_rts(rt->rt_spares, 0,0,0,0,AGE_RT(rt->rt_state,rt->rt_ifp)); 817 trace_bits(rs_bits, rt->rt_state, 0); 818 (void)fputc('\n',ftrace); 819 } 820 821 822 /* ARGSUSED */ 823 static int 824 walk_trace(struct radix_node *rn, 825 struct walkarg *w UNUSED) 826 { 827 #define RT ((struct rt_entry *)rn) 828 struct rt_spare *rts; 829 int i; 830 831 (void)fprintf(ftrace, " %-35s ", 832 rtname(RT->rt_dst, RT->rt_mask, RT->rt_gate)); 833 print_rts(&RT->rt_spares[0], 0,0,0,0, AGE_RT(RT->rt_state, RT->rt_ifp)); 834 trace_bits(rs_bits, RT->rt_state, 0); 835 if (RT->rt_poison_time >= now_garbage 836 && RT->rt_poison_metric < RT->rt_metric) 837 (void)fprintf(ftrace, "pm=%d@%s", 838 RT->rt_poison_metric, ts(RT->rt_poison_time)); 839 840 rts = &RT->rt_spares[1]; 841 for (i = 1; i < NUM_SPARES; i++, rts++) { 842 if (rts->rts_gate != RIP_DEFAULT) { 843 (void)fprintf(ftrace,"\n #%d%15s%-16s ", 844 i, "", naddr_ntoa(rts->rts_gate)); 845 print_rts(rts, 0,0,0,0,1); 846 } 847 } 848 (void)fputc('\n',ftrace); 849 850 return 0; 851 } 852 853 854 static void 855 trace_dump(void) 856 { 857 struct interface *ifp; 858 859 if (ftrace == 0) 860 return; 861 lastlog(); 862 863 (void)fputs("current daemon state:\n", ftrace); 864 for (ifp = ifnet; ifp != 0; ifp = ifp->int_next) 865 trace_if("", ifp); 866 (void)rn_walktree(rhead, walk_trace, 0); 867 } 868 869 870 void 871 trace_rip(const char *dir1, const char *dir2, 872 struct sockaddr_in *who, 873 struct interface *ifp, 874 struct rip *msg, 875 int size) /* total size of message */ 876 { 877 struct netinfo *n, *lim; 878 # define NA ((struct netauth*)n) 879 int i, seen_route; 880 881 if (!TRACEPACKETS || ftrace == 0) 882 return; 883 884 lastlog(); 885 if (msg->rip_cmd >= RIPCMD_MAX 886 || msg->rip_vers == 0) { 887 (void)fprintf(ftrace, "%s bad RIPv%d cmd=%d %s" 888 " %s.%d size=%d\n", 889 dir1, msg->rip_vers, msg->rip_cmd, dir2, 890 naddr_ntoa(who->sin_addr.s_addr), 891 ntohs(who->sin_port), 892 size); 893 return; 894 } 895 896 (void)fprintf(ftrace, "%s RIPv%d %s %s %s.%d%s%s\n", 897 dir1, msg->rip_vers, ripcmds[msg->rip_cmd], dir2, 898 naddr_ntoa(who->sin_addr.s_addr), ntohs(who->sin_port), 899 ifp ? " via " : "", ifp ? ifp->int_name : ""); 900 if (!TRACECONTENTS) 901 return; 902 903 seen_route = 0; 904 switch (msg->rip_cmd) { 905 case RIPCMD_REQUEST: 906 case RIPCMD_RESPONSE: 907 n = msg->rip_nets; 908 lim = (struct netinfo *)((char*)msg + size); 909 for (; n < lim; n++) { 910 if (!seen_route 911 && n->n_family == RIP_AF_UNSPEC 912 && ntohl(n->n_metric) == HOPCNT_INFINITY 913 && msg->rip_cmd == RIPCMD_REQUEST 914 && (n+1 == lim 915 || (n+2 == lim 916 && (n+1)->n_family == RIP_AF_AUTH))) { 917 (void)fputs("\tQUERY ", ftrace); 918 if (n->n_dst != 0) 919 (void)fprintf(ftrace, "%s ", 920 naddr_ntoa(n->n_dst)); 921 if (n->n_mask != 0) 922 (void)fprintf(ftrace, "mask=%#x ", 923 (u_int)ntohl(n->n_mask)); 924 if (n->n_nhop != 0) 925 (void)fprintf(ftrace, "nhop=%s ", 926 naddr_ntoa(n->n_nhop)); 927 if (n->n_tag != 0) 928 (void)fprintf(ftrace, "tag=%#x ", 929 ntohs(n->n_tag)); 930 (void)fputc('\n',ftrace); 931 continue; 932 } 933 934 if (n->n_family == RIP_AF_AUTH) { 935 if (NA->a_type == RIP_AUTH_PW 936 && n == msg->rip_nets) { 937 (void)fprintf(ftrace, "\tPassword" 938 " Authentication:" 939 " \"%s\"\n", 940 qstring(NA->au.au_pw, 941 RIP_AUTH_PW_LEN)); 942 continue; 943 } 944 945 if (NA->a_type == RIP_AUTH_MD5 946 && n == msg->rip_nets) { 947 (void)fprintf(ftrace, 948 "\tMD5 Auth" 949 " pkt_len=%d KeyID=%u" 950 " auth_len=%d" 951 " seqno=%#x" 952 " rsvd=%#x,%#x\n", 953 ntohs(NA->au.a_md5.md5_pkt_len), 954 NA->au.a_md5.md5_keyid, 955 NA->au.a_md5.md5_auth_len, 956 (int)ntohl(NA->au.a_md5.md5_seqno), 957 (int)ntohs(NA->au.a_md5.rsvd[0]), 958 (int)ntohs(NA->au.a_md5.rsvd[1])); 959 continue; 960 } 961 (void)fprintf(ftrace, 962 "\tAuthentication type %d: ", 963 ntohs(NA->a_type)); 964 for (i = 0; 965 i < (int)sizeof(NA->au.au_pw); 966 i++) 967 (void)fprintf(ftrace, "%02x ", 968 NA->au.au_pw[i]); 969 (void)fputc('\n',ftrace); 970 continue; 971 } 972 973 seen_route = 1; 974 if (n->n_family != RIP_AF_INET) { 975 (void)fprintf(ftrace, 976 "\t(af %d) %-18s mask=%#x ", 977 ntohs(n->n_family), 978 naddr_ntoa(n->n_dst), 979 (u_int)ntohl(n->n_mask)); 980 } else if (msg->rip_vers == RIPv1) { 981 (void)fprintf(ftrace, "\t%-18s ", 982 addrname(n->n_dst, 983 ntohl(n->n_mask), 984 n->n_mask==0 ? 2 : 1)); 985 } else { 986 (void)fprintf(ftrace, "\t%-18s ", 987 addrname(n->n_dst, 988 ntohl(n->n_mask), 989 n->n_mask==0 ? 2 : 0)); 990 } 991 (void)fprintf(ftrace, "metric=%-2d ", 992 (u_int)ntohl(n->n_metric)); 993 if (n->n_nhop != 0) 994 (void)fprintf(ftrace, " nhop=%s ", 995 naddr_ntoa(n->n_nhop)); 996 if (n->n_tag != 0) 997 (void)fprintf(ftrace, "tag=%#x", 998 ntohs(n->n_tag)); 999 (void)fputc('\n',ftrace); 1000 } 1001 if (size != (char *)n - (char *)msg) 1002 (void)fprintf(ftrace, "truncated record, len %d\n", 1003 size); 1004 break; 1005 1006 case RIPCMD_TRACEON: 1007 fprintf(ftrace, "\tfile=\"%.*s\"\n", size-4, 1008 msg->rip_tracefile); 1009 break; 1010 1011 case RIPCMD_TRACEOFF: 1012 break; 1013 } 1014 } 1015
Indexes created Tue Sep 23 14:10:03 GMT 2025