1 /* $NetBSD: trace.c,v 1.25 2001/03/10 23:52:47 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 #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 1.25 2001/03/10 23:52:47 christos 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 (void)fputc('\n',ftrace); 193 fflush(ftrace); 194 } 195 } 196 197 198 void 199 trace_close(int zap_stdio) 200 { 201 int fd; 202 203 204 fflush(stdout); 205 fflush(stderr); 206 207 if (ftrace != 0 && zap_stdio) { 208 if (ftrace != stdout) 209 fclose(ftrace); 210 ftrace = 0; 211 fd = open(_PATH_DEVNULL, O_RDWR); 212 if (isatty(STDIN_FILENO)) 213 (void)dup2(fd, STDIN_FILENO); 214 if (isatty(STDOUT_FILENO)) 215 (void)dup2(fd, STDOUT_FILENO); 216 if (isatty(STDERR_FILENO)) 217 (void)dup2(fd, STDERR_FILENO); 218 (void)close(fd); 219 } 220 lastlog_time.tv_sec = 0; 221 } 222 223 224 void 225 trace_flush(void) 226 { 227 if (ftrace != 0) { 228 fflush(ftrace); 229 if (ferror(ftrace)) 230 trace_off("tracing off: %s", strerror(ferror(ftrace))); 231 } 232 } 233 234 235 void 236 trace_off(const char *p, ...) 237 { 238 va_list args; 239 240 241 if (ftrace != 0) { 242 lastlog(); 243 va_start(args, p); 244 vfprintf(ftrace, p, 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 (!IS_RIP_OUT_OFF(ifp->int_state) 648 && ifp->int_d_metric != 0) 649 (void)fprintf(ftrace, "fake_default=%d ", ifp->int_d_metric); 650 trace_bits(if_bits, ifp->int_if_flags, 0); 651 trace_bits(is_bits, ifp->int_state, 0); 652 (void)fputc('\n',ftrace); 653 } 654 655 656 void 657 trace_upslot(struct rt_entry *rt, 658 struct rt_spare *rts, 659 struct rt_spare *new) 660 { 661 if (!TRACEACTIONS || ftrace == 0) 662 return; 663 664 if (rts->rts_gate == new->rts_gate 665 && rts->rts_router == new->rts_router 666 && rts->rts_metric == new->rts_metric 667 && rts->rts_tag == new->rts_tag 668 && rts->rts_de_ag == new->rts_de_ag) 669 return; 670 671 lastlog(); 672 if (new->rts_gate == 0) { 673 (void)fprintf(ftrace, "Del #%d %-35s ", 674 (int)(rts - rt->rt_spares), 675 rtname(rt->rt_dst, rt->rt_mask, rts->rts_gate)); 676 print_rts(rts, 0,0,0,0, 677 (rts != rt->rt_spares 678 || AGE_RT(rt->rt_state,new->rts_ifp))); 679 680 } else if (rts->rts_gate != RIP_DEFAULT) { 681 (void)fprintf(ftrace, "Chg #%d %-35s ", 682 (int)(rts - rt->rt_spares), 683 rtname(rt->rt_dst, rt->rt_mask, rts->rts_gate)); 684 print_rts(rts, 0,0, 685 rts->rts_gate != new->rts_gate, 686 rts->rts_tag != new->rts_tag, 687 rts != rt->rt_spares || AGE_RT(rt->rt_state, 688 rt->rt_ifp)); 689 690 (void)fprintf(ftrace, "\n %19s%-16s ", "", 691 (new->rts_gate != rts->rts_gate 692 ? naddr_ntoa(new->rts_gate) : "")); 693 print_rts(new, 694 -(new->rts_metric == rts->rts_metric), 695 -(new->rts_ifp == rts->rts_ifp), 696 0, 697 rts->rts_tag != new->rts_tag, 698 (new->rts_time != rts->rts_time 699 && (rts != rt->rt_spares 700 || AGE_RT(rt->rt_state, new->rts_ifp)))); 701 702 } else { 703 (void)fprintf(ftrace, "Add #%d %-35s ", 704 (int)(rts - rt->rt_spares), 705 rtname(rt->rt_dst, rt->rt_mask, new->rts_gate)); 706 print_rts(new, 0,0,0,0, 707 (rts != rt->rt_spares 708 || AGE_RT(rt->rt_state,new->rts_ifp))); 709 } 710 (void)fputc('\n',ftrace); 711 } 712 713 714 /* miscellaneous message checked by the caller 715 */ 716 void 717 trace_misc(const char *p, ...) 718 { 719 va_list args; 720 721 if (ftrace == 0) 722 return; 723 724 lastlog(); 725 va_start(args, p); 726 vfprintf(ftrace, p, args); 727 (void)fputc('\n',ftrace); 728 } 729 730 731 /* display a message if tracing actions 732 */ 733 void 734 trace_act(const char *p, ...) 735 { 736 va_list args; 737 738 if (!TRACEACTIONS || ftrace == 0) 739 return; 740 741 lastlog(); 742 va_start(args, p); 743 vfprintf(ftrace, p, args); 744 (void)fputc('\n',ftrace); 745 } 746 747 748 /* display a message if tracing packets 749 */ 750 void 751 trace_pkt(const char *p, ...) 752 { 753 va_list args; 754 755 if (!TRACEPACKETS || ftrace == 0) 756 return; 757 758 lastlog(); 759 va_start(args, p); 760 vfprintf(ftrace, p, args); 761 (void)fputc('\n',ftrace); 762 } 763 764 765 void 766 trace_change(struct rt_entry *rt, 767 u_int state, 768 struct rt_spare *new, 769 const char *label) 770 { 771 if (ftrace == 0) 772 return; 773 774 if (rt->rt_metric == new->rts_metric 775 && rt->rt_gate == new->rts_gate 776 && rt->rt_router == new->rts_router 777 && rt->rt_state == state 778 && rt->rt_tag == new->rts_tag 779 && rt->rt_de_ag == new->rts_de_ag) 780 return; 781 782 lastlog(); 783 (void)fprintf(ftrace, "%s %-35s ", 784 label, 785 rtname(rt->rt_dst, rt->rt_mask, rt->rt_gate)); 786 print_rts(rt->rt_spares, 787 0,0,0,0, AGE_RT(rt->rt_state, rt->rt_ifp)); 788 trace_bits(rs_bits, rt->rt_state, rt->rt_state != state); 789 790 (void)fprintf(ftrace, "\n%*s %19s%-16s ", 791 (int)strlen(label), "", "", 792 (rt->rt_gate != new->rts_gate 793 ? naddr_ntoa(new->rts_gate) : "")); 794 print_rts(new, 795 -(new->rts_metric == rt->rt_metric), 796 -(new->rts_ifp == rt->rt_ifp), 797 0, 798 rt->rt_tag != new->rts_tag, 799 (rt->rt_time != new->rts_time 800 && AGE_RT(rt->rt_state,new->rts_ifp))); 801 if (rt->rt_state != state) 802 trace_bits(rs_bits, state, 1); 803 (void)fputc('\n',ftrace); 804 } 805 806 807 void 808 trace_add_del(const char * action, struct rt_entry *rt) 809 { 810 if (ftrace == 0) 811 return; 812 813 lastlog(); 814 (void)fprintf(ftrace, "%s %-35s ", 815 action, 816 rtname(rt->rt_dst, rt->rt_mask, rt->rt_gate)); 817 print_rts(rt->rt_spares, 0,0,0,0,AGE_RT(rt->rt_state,rt->rt_ifp)); 818 trace_bits(rs_bits, rt->rt_state, 0); 819 (void)fputc('\n',ftrace); 820 } 821 822 823 /* ARGSUSED */ 824 static int 825 walk_trace(struct radix_node *rn, 826 struct walkarg *w UNUSED) 827 { 828 #define RT ((struct rt_entry *)rn) 829 struct rt_spare *rts; 830 int i; 831 832 (void)fprintf(ftrace, " %-35s ", 833 rtname(RT->rt_dst, RT->rt_mask, RT->rt_gate)); 834 print_rts(&RT->rt_spares[0], 0,0,0,0, AGE_RT(RT->rt_state, RT->rt_ifp)); 835 trace_bits(rs_bits, RT->rt_state, 0); 836 if (RT->rt_poison_time >= now_garbage 837 && RT->rt_poison_metric < RT->rt_metric) 838 (void)fprintf(ftrace, "pm=%d@%s", 839 RT->rt_poison_metric, ts(RT->rt_poison_time)); 840 841 rts = &RT->rt_spares[1]; 842 for (i = 1; i < NUM_SPARES; i++, rts++) { 843 if (rts->rts_gate != RIP_DEFAULT) { 844 (void)fprintf(ftrace,"\n #%d%15s%-16s ", 845 i, "", naddr_ntoa(rts->rts_gate)); 846 print_rts(rts, 0,0,0,0,1); 847 } 848 } 849 (void)fputc('\n',ftrace); 850 851 return 0; 852 } 853 854 855 static void 856 trace_dump(void) 857 { 858 struct interface *ifp; 859 860 if (ftrace == 0) 861 return; 862 lastlog(); 863 864 (void)fputs("current daemon state:\n", ftrace); 865 for (ifp = ifnet; ifp != 0; ifp = ifp->int_next) 866 trace_if("", ifp); 867 (void)rn_walktree(rhead, walk_trace, 0); 868 } 869 870 871 void 872 trace_rip(const char *dir1, const char *dir2, 873 struct sockaddr_in *who, 874 struct interface *ifp, 875 struct rip *msg, 876 int size) /* total size of message */ 877 { 878 struct netinfo *n, *lim; 879 # define NA ((struct netauth*)n) 880 int i, seen_route; 881 882 if (!TRACEPACKETS || ftrace == 0) 883 return; 884 885 lastlog(); 886 if (msg->rip_cmd >= RIPCMD_MAX 887 || msg->rip_vers == 0) { 888 (void)fprintf(ftrace, "%s bad RIPv%d cmd=%d %s" 889 " %s.%d size=%d\n", 890 dir1, msg->rip_vers, msg->rip_cmd, dir2, 891 naddr_ntoa(who->sin_addr.s_addr), 892 ntohs(who->sin_port), 893 size); 894 return; 895 } 896 897 (void)fprintf(ftrace, "%s RIPv%d %s %s %s.%d%s%s\n", 898 dir1, msg->rip_vers, ripcmds[msg->rip_cmd], dir2, 899 naddr_ntoa(who->sin_addr.s_addr), ntohs(who->sin_port), 900 ifp ? " via " : "", ifp ? ifp->int_name : ""); 901 if (!TRACECONTENTS) 902 return; 903 904 seen_route = 0; 905 switch (msg->rip_cmd) { 906 case RIPCMD_REQUEST: 907 case RIPCMD_RESPONSE: 908 n = msg->rip_nets; 909 lim = (struct netinfo *)((char*)msg + size); 910 for (; n < lim; n++) { 911 if (!seen_route 912 && n->n_family == RIP_AF_UNSPEC 913 && ntohl(n->n_metric) == HOPCNT_INFINITY 914 && msg->rip_cmd == RIPCMD_REQUEST 915 && (n+1 == lim 916 || (n+2 == lim 917 && (n+1)->n_family == RIP_AF_AUTH))) { 918 (void)fputs("\tQUERY ", ftrace); 919 if (n->n_dst != 0) 920 (void)fprintf(ftrace, "%s ", 921 naddr_ntoa(n->n_dst)); 922 if (n->n_mask != 0) 923 (void)fprintf(ftrace, "mask=%#x ", 924 (u_int)ntohl(n->n_mask)); 925 if (n->n_nhop != 0) 926 (void)fprintf(ftrace, "nhop=%s ", 927 naddr_ntoa(n->n_nhop)); 928 if (n->n_tag != 0) 929 (void)fprintf(ftrace, "tag=%#x ", 930 ntohs(n->n_tag)); 931 (void)fputc('\n',ftrace); 932 continue; 933 } 934 935 if (n->n_family == RIP_AF_AUTH) { 936 if (NA->a_type == RIP_AUTH_PW 937 && n == msg->rip_nets) { 938 (void)fprintf(ftrace, "\tPassword" 939 " Authentication:" 940 " \"%s\"\n", 941 qstring(NA->au.au_pw, 942 RIP_AUTH_PW_LEN)); 943 continue; 944 } 945 946 if (NA->a_type == RIP_AUTH_MD5 947 && n == msg->rip_nets) { 948 (void)fprintf(ftrace, 949 "\tMD5 Auth" 950 " pkt_len=%d KeyID=%u" 951 " auth_len=%d" 952 " seqno=%#x" 953 " rsvd=%#x,%#x\n", 954 ntohs(NA->au.a_md5.md5_pkt_len), 955 NA->au.a_md5.md5_keyid, 956 NA->au.a_md5.md5_auth_len, 957 (int)ntohl(NA->au.a_md5.md5_seqno), 958 (int)ntohs(NA->au.a_md5.rsvd[0]), 959 (int)ntohs(NA->au.a_md5.rsvd[1])); 960 continue; 961 } 962 (void)fprintf(ftrace, 963 "\tAuthentication type %d: ", 964 ntohs(NA->a_type)); 965 for (i = 0; 966 i < (int)sizeof(NA->au.au_pw); 967 i++) 968 (void)fprintf(ftrace, "%02x ", 969 NA->au.au_pw[i]); 970 (void)fputc('\n',ftrace); 971 continue; 972 } 973 974 seen_route = 1; 975 if (n->n_family != RIP_AF_INET) { 976 (void)fprintf(ftrace, 977 "\t(af %d) %-18s mask=%#x ", 978 ntohs(n->n_family), 979 naddr_ntoa(n->n_dst), 980 (u_int)ntohl(n->n_mask)); 981 } else if (msg->rip_vers == RIPv1) { 982 (void)fprintf(ftrace, "\t%-18s ", 983 addrname(n->n_dst, 984 ntohl(n->n_mask), 985 n->n_mask==0 ? 2 : 1)); 986 } else { 987 (void)fprintf(ftrace, "\t%-18s ", 988 addrname(n->n_dst, 989 ntohl(n->n_mask), 990 n->n_mask==0 ? 2 : 0)); 991 } 992 (void)fprintf(ftrace, "metric=%-2d ", 993 (u_int)ntohl(n->n_metric)); 994 if (n->n_nhop != 0) 995 (void)fprintf(ftrace, " nhop=%s ", 996 naddr_ntoa(n->n_nhop)); 997 if (n->n_tag != 0) 998 (void)fprintf(ftrace, "tag=%#x", 999 ntohs(n->n_tag)); 1000 (void)fputc('\n',ftrace); 1001 } 1002 if (size != (char *)n - (char *)msg) 1003 (void)fprintf(ftrace, "truncated record, len %d\n", 1004 size); 1005 break; 1006 1007 case RIPCMD_TRACEON: 1008 fprintf(ftrace, "\tfile=\"%.*s\"\n", size-4, 1009 msg->rip_tracefile); 1010 break; 1011 1012 case RIPCMD_TRACEOFF: 1013 break; 1014 } 1015 } 1016