sbin/routed/trace.c

   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  * 3. All advertising materials mentioning features or use of this software
  14  *    must display the following acknowledgment:
  15  *      This product includes software developed by the University of
  16  *      California, Berkeley and its contributors.
  17  * 4. Neither the name of the University nor the names of its contributors
  18  *    may be used to endorse or promote products derived from this software
  19  *    without specific prior written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  31  * SUCH DAMAGE.
  32  *
  33  * $FreeBSD: src/sbin/routed/trace.c,v 1.5.2.1 2002/11/07 17:19:13 imp Exp $
  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 #if !defined(sgi) && !defined(__NetBSD__)
  44 static char sccsid[] __attribute__((unused)) = "@(#)trace.c     8.1 (Berkeley) 6/5/93";
  45 #elif defined(__NetBSD__)
  46 __RCSID("$NetBSD$");
  47 #endif
  48
  49
  50 #ifdef sgi
  51 /* use *stat64 for files on large filesystems */
  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[MAXPATHLEN+1];
  61 char    inittracename[MAXPATHLEN+1];
  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 == NULL) ? "?" : 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         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                 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 != NULL) {
 187                 lastlog();
 188                 va_start(args, p);
 189                 vfprintf(ftrace, p, args);
 190                 fputc('\n',ftrace);
 191                 fflush(ftrace);
 192         }
 193 }
 194
 195
 196 void
 197 trace_close(int zap_stdio)
 198 {
 199         int fd;
 200
 201
 202         fflush(stdout);
 203         fflush(stderr);
 204
 205         if (ftrace != NULL && zap_stdio) {
 206                 if (ftrace != stdout)
 207                         fclose(ftrace);
 208                 ftrace = NULL;
 209                 fd = open(_PATH_DEVNULL, O_RDWR);
 210                 if (isatty(STDIN_FILENO))
 211                         dup2(fd, STDIN_FILENO);
 212                 if (isatty(STDOUT_FILENO))
 213                         dup2(fd, STDOUT_FILENO);
 214                 if (isatty(STDERR_FILENO))
 215                         dup2(fd, STDERR_FILENO);
 216                 close(fd);
 217         }
 218         lastlog_time.tv_sec = 0;
 219 }
 220
 221
 222 void
 223 trace_flush(void)
 224 {
 225         if (ftrace != NULL) {
 226                 fflush(ftrace);
 227                 if (ferror(ftrace))
 228                         trace_off("tracing off: %s", strerror(ferror(ftrace)));
 229         }
 230 }
 231
 232
 233 void
 234 trace_off(const char *p, ...)
 235 {
 236         va_list args;
 237
 238
 239         if (ftrace != NULL) {
 240                 lastlog();
 241                 va_start(args, p);
 242                 vfprintf(ftrace, p, args);
 243                 fputc('\n',ftrace);
 244         }
 245         trace_close(file_trace);
 246
 247         new_tracelevel = tracelevel = 0;
 248 }
 249
 250
 251 /* log a change in tracing
 252  */
 253 void
 254 tracelevel_msg(const char *pat,
 255                int dump)                /* -1=no dump, 0=default, 1=force */
 256 {
 257         static const char *off_msgs[MAX_TRACELEVEL] = {
 258                 "Tracing actions stopped",
 259                 "Tracing packets stopped",
 260                 "Tracing packet contents stopped",
 261                 "Tracing kernel changes stopped",
 262         };
 263         static const char *on_msgs[MAX_TRACELEVEL] = {
 264                 "Tracing actions started",
 265                 "Tracing packets started",
 266                 "Tracing packet contents started",
 267                 "Tracing kernel changes started",
 268         };
 269         u_int old_tracelevel = tracelevel;
 270
 271
 272         if (new_tracelevel < 0)
 273                 new_tracelevel = 0;
 274         else if (new_tracelevel > MAX_TRACELEVEL)
 275                 new_tracelevel = MAX_TRACELEVEL;
 276
 277         if (new_tracelevel < tracelevel) {
 278                 if (new_tracelevel <= 0) {
 279                         trace_off(pat, off_msgs[0]);
 280                 } else do {
 281                         tmsg(pat, off_msgs[tracelevel]);
 282                 }
 283                 while (--tracelevel != new_tracelevel);
 284
 285         } else if (new_tracelevel > tracelevel) {
 286                 do {
 287                         tmsg(pat, on_msgs[tracelevel++]);
 288                 } while (tracelevel != new_tracelevel);
 289         }
 290
 291         if (dump > 0
 292             || (dump == 0 && old_tracelevel == 0 && tracelevel != 0))
 293                 trace_dump();
 294 }
 295
 296
 297 void
 298 set_tracefile(const char *filename,
 299               const char *pat,
 300               int dump)                 /* -1=no dump, 0=default, 1=force */
 301 {
 302         struct stat stbuf;
 303         FILE *n_ftrace;
 304         const char *fn;
 305
 306
 307         /* Allow a null filename to increase the level if the trace file
 308          * is already open or if coming from a trusted source, such as
 309          * a signal or the command line.
 310          */
 311         if (filename == NULL || filename[0] == '\0') {
 312                 filename = NULL;
 313                 if (ftrace == NULL) {
 314                         if (inittracename[0] == '\0') {
 315                                 msglog("missing trace file name");
 316                                 return;
 317                         }
 318                         fn = inittracename;
 319                 } else {
 320                         fn = NULL;
 321                 }
 322
 323         } else if (!strcmp(filename,"dump/../table")) {
 324                 trace_dump();
 325                 return;
 326
 327         } else {
 328                 /* Allow the file specified with "-T file" to be reopened,
 329                  * but require all other names specified over the net to
 330                  * match the official path.  The path can specify a directory
 331                  * in which the file is to be created.
 332                  */
 333                 if (strcmp(filename, inittracename)
 334 #ifdef _PATH_TRACE
 335                     && (strncmp(filename, _PATH_TRACE, sizeof(_PATH_TRACE)-1)
 336                         || strstr(filename,"../")
 337                         || 0 > stat(_PATH_TRACE, &stbuf))
 338 #endif
 339                     ) {
 340                         msglog("wrong trace file \"%s\"", filename);
 341                         return;
 342                 }
 343
 344                 /* If the new tracefile exists, it must be a regular file.
 345                  */
 346                 if (stat(filename, &stbuf) >= 0 && !S_ISREG(stbuf.st_mode)) {
 347                         msglog("wrong type (%#x) of trace file \"%s\"",
 348                                stbuf.st_mode, filename);
 349                         return;
 350                 }
 351
 352                 fn = filename;
 353         }
 354
 355         if (fn != NULL) {
 356                 n_ftrace = fopen(fn, "a");
 357                 if (n_ftrace == NULL) {
 358                         msglog("failed to open trace file \"%s\" %s",
 359                                fn, strerror(errno));
 360                         if (fn == inittracename)
 361                                 inittracename[0] = '\0';
 362                         return;
 363                 }
 364
 365                 tmsg("switch to trace file %s", fn);
 366
 367                 trace_close(file_trace = 1);
 368
 369                 if (fn != savetracename)
 370                         strncpy(savetracename, fn, sizeof(savetracename)-1);
 371                 ftrace = n_ftrace;
 372
 373                 fflush(stdout);
 374                 fflush(stderr);
 375                 dup2(fileno(ftrace), STDOUT_FILENO);
 376                 dup2(fileno(ftrace), STDERR_FILENO);
 377         }
 378
 379         if (new_tracelevel == 0 || filename == NULL)
 380                 new_tracelevel++;
 381         tracelevel_msg(pat, dump != 0 ? dump : (filename != NULL));
 382 }
 383
 384
 385 /* ARGSUSED */
 386 void
 387 sigtrace_on(int s UNUSED)
 388 {
 389         new_tracelevel++;
 390         sigtrace_pat = "SIGUSR1: %s";
 391 }
 392
 393
 394 /* ARGSUSED */
 395 void
 396 sigtrace_off(int s UNUSED)
 397 {
 398         new_tracelevel--;
 399         sigtrace_pat = "SIGUSR2: %s";
 400 }
 401
 402
 403 /* Set tracing after a signal.
 404  */
 405 void
 406 set_tracelevel(void)
 407 {
 408         if (new_tracelevel == tracelevel)
 409                 return;
 410
 411         /* If tracing entirely off, and there was no tracefile specified
 412          * on the command line, then leave it off.
 413          */
 414         if (new_tracelevel > tracelevel && ftrace == NULL) {
 415                 if (savetracename[0] != '\0') {
 416                         set_tracefile(savetracename,sigtrace_pat,0);
 417                 } else if (inittracename[0] != '\0') {
 418                                 set_tracefile(inittracename,sigtrace_pat,0);
 419                 } else {
 420                         new_tracelevel = 0;
 421                         return;
 422                 }
 423         } else {
 424                 tracelevel_msg(sigtrace_pat, 0);
 425         }
 426 }
 427
 428
 429 /* display an address
 430  */
 431 char *
 432 addrname(naddr  addr,                   /* in network byte order */
 433          naddr  mask,
 434          int    force)                  /* 0=show mask if nonstandard, */
 435 {                                       /*      1=always show mask, 2=never */
 436 #define NUM_BUFS 4
 437         static int bufno;
 438         static struct {
 439             char    str[15+20];
 440         } bufs[NUM_BUFS];
 441         char *s, *sp;
 442         naddr dmask;
 443         int i;
 444
 445         s = strcpy(bufs[bufno].str, naddr_ntoa(addr));
 446         bufno = (bufno+1) % NUM_BUFS;
 447
 448         if (force == 1 || (force == 0 && mask != std_mask(addr))) {
 449                 sp = &s[strlen(s)];
 450
 451                 dmask = mask & -mask;
 452                 if (mask + dmask == 0) {
 453                         for (i = 0; i != 32 && ((1<<i) & mask) == 0; i++)
 454                                 continue;
 455                         sprintf(sp, "/%d", 32-i);
 456
 457                 } else {
 458                         sprintf(sp, " (mask %#x)", (u_int)mask);
 459                 }
 460         }
 461
 462         return s;
 463 #undef NUM_BUFS
 464 }
 465
 466
 467 /* display a bit-field
 468  */
 469 struct bits {
 470         u_int   bits_mask;
 471         u_int   bits_clear;
 472         const char *bits_name;
 473 };
 474
 475 static struct bits if_bits[] = {
 476         { IFF_LOOPBACK,         0,              "LOOPBACK" },
 477         { IFF_POINTOPOINT,      0,              "PT-TO-PT" },
 478         { 0,                    0,              0}
 479 };
 480
 481 static struct bits is_bits[] = {
 482         { IS_ALIAS,             0,              "ALIAS" },
 483         { IS_SUBNET,            0,              "" },
 484         { IS_REMOTE,            (IS_NO_RDISC
 485                                  | IS_BCAST_RDISC), "REMOTE" },
 486         { IS_PASSIVE,           (IS_NO_RDISC
 487                                  | IS_NO_RIP
 488                                  | IS_NO_SUPER_AG
 489                                  | IS_PM_RDISC
 490                                  | IS_NO_AG),   "PASSIVE" },
 491         { IS_EXTERNAL,          0,              "EXTERNAL" },
 492         { IS_CHECKED,           0,              "" },
 493         { IS_ALL_HOSTS,         0,              "" },
 494         { IS_ALL_ROUTERS,       0,              "" },
 495         { IS_DISTRUST,          0,              "DISTRUST" },
 496         { IS_BROKE,             IS_SICK,        "BROKEN" },
 497         { IS_SICK,              0,              "SICK" },
 498         { IS_DUP,               0,              "DUPLICATE" },
 499         { IS_REDIRECT_OK,       0,              "REDIRECT_OK" },
 500         { IS_NEED_NET_SYN,      0,              "" },
 501         { IS_NO_AG,             IS_NO_SUPER_AG, "NO_AG" },
 502         { IS_NO_SUPER_AG,       0,              "NO_SUPER_AG" },
 503         { (IS_NO_RIPV1_IN
 504            | IS_NO_RIPV2_IN
 505            | IS_NO_RIPV1_OUT
 506            | IS_NO_RIPV2_OUT),  0,              "NO_RIP" },
 507         { (IS_NO_RIPV1_IN
 508            | IS_NO_RIPV1_OUT),  0,              "RIPV2" },
 509         { IS_NO_RIPV1_IN,       0,              "NO_RIPV1_IN" },
 510         { IS_NO_RIPV2_IN,       0,              "NO_RIPV2_IN" },
 511         { IS_NO_RIPV1_OUT,      0,              "NO_RIPV1_OUT" },
 512         { IS_NO_RIPV2_OUT,      0,              "NO_RIPV2_OUT" },
 513         { (IS_NO_ADV_IN
 514            | IS_NO_SOL_OUT
 515            | IS_NO_ADV_OUT),    IS_BCAST_RDISC, "NO_RDISC" },
 516         { IS_NO_SOL_OUT,        0,              "NO_SOLICIT" },
 517         { IS_SOL_OUT,           0,              "SEND_SOLICIT" },
 518         { IS_NO_ADV_OUT,        IS_BCAST_RDISC, "NO_RDISC_ADV" },
 519         { IS_ADV_OUT,           0,              "RDISC_ADV" },
 520         { IS_BCAST_RDISC,       0,              "BCAST_RDISC" },
 521         { IS_PM_RDISC,          0,              "" },
 522         { 0,                    0,              "%#x"}
 523 };
 524
 525 static struct bits rs_bits[] = {
 526         { RS_IF,                0,              "IF" },
 527         { RS_NET_INT,           RS_NET_SYN,     "NET_INT" },
 528         { RS_NET_SYN,           0,              "NET_SYN" },
 529         { RS_SUBNET,            0,              "" },
 530         { RS_LOCAL,             0,              "LOCAL" },
 531         { RS_MHOME,             0,              "MHOME" },
 532         { RS_STATIC,            0,              "STATIC" },
 533         { RS_RDISC,             0,              "RDISC" },
 534         { 0,                    0,              "%#x"}
 535 };
 536
 537
 538 static void
 539 trace_bits(const struct bits *tbl,
 540            u_int field,
 541            int force)
 542 {
 543         u_int b;
 544         char c;
 545
 546         if (force) {
 547                 putc('<', ftrace);
 548                 c = 0;
 549         } else {
 550                 c = '<';
 551         }
 552
 553         while (field != 0
 554                && (b = tbl->bits_mask) != 0) {
 555                 if ((b & field) == b) {
 556                         if (tbl->bits_name[0] != '\0') {
 557                                 if (c)
 558                                         putc(c, ftrace);
 559                                 fprintf(ftrace, "%s", tbl->bits_name);
 560                                 c = '|';
 561                         }
 562                         if (0 == (field &= ~(b | tbl->bits_clear)))
 563                                 break;
 564                 }
 565                 tbl++;
 566         }
 567         if (field != 0 && tbl->bits_name != NULL) {
 568                 if (c)
 569                         putc(c, ftrace);
 570                 fprintf(ftrace, tbl->bits_name, field);
 571                 c = '|';
 572         }
 573
 574         if (c != '<' || force)
 575                 fputs("> ", ftrace);
 576 }
 577
 578
 579 char *
 580 rtname(naddr dst,
 581        naddr mask,
 582        naddr gate)
 583 {
 584         static char buf[3*4+3+1+2+3     /* "xxx.xxx.xxx.xxx/xx-->" */
 585                         +3*4+3+1];      /* "xxx.xxx.xxx.xxx" */
 586         int i;
 587
 588         i = sprintf(buf, "%-16s-->", addrname(dst, mask, 0));
 589         sprintf(&buf[i], "%-*s", 15+20-MAX(20,i), naddr_ntoa(gate));
 590         return buf;
 591 }
 592
 593
 594 static void
 595 print_rts(struct rt_spare *rts,
 596           int force_metric,             /* -1=suppress, 0=default */
 597           int force_ifp,                /* -1=suppress, 0=default */
 598           int force_router,             /* -1=suppress, 0=default, 1=display */
 599           int force_tag,                /* -1=suppress, 0=default, 1=display */
 600           int force_time)               /* 0=suppress, 1=display */
 601 {
 602         int i;
 603
 604
 605         if (force_metric >= 0)
 606                 fprintf(ftrace, "metric=%-2d ", rts->rts_metric);
 607         if (force_ifp >= 0)
 608                 fprintf(ftrace, "%s ", (rts->rts_ifp == 0 ?
 609                                         "if?" : rts->rts_ifp->int_name));
 610         if (force_router > 0
 611             || (force_router == 0 && rts->rts_router != rts->rts_gate))
 612                 fprintf(ftrace, "router=%s ", naddr_ntoa(rts->rts_router));
 613         if (force_time > 0)
 614                 fprintf(ftrace, "%s ", ts(rts->rts_time));
 615         if (force_tag > 0
 616             || (force_tag == 0 && rts->rts_tag != 0))
 617                 fprintf(ftrace, "tag=%#x ", ntohs(rts->rts_tag));
 618         if (rts->rts_de_ag != 0) {
 619                 for (i = 1; (u_int)(1 << i) <= rts->rts_de_ag; i++)
 620                         continue;
 621                 fprintf(ftrace, "de_ag=%d ", i);
 622         }
 623
 624 }
 625
 626
 627 void
 628 trace_if(const char *act,
 629          struct interface *ifp)
 630 {
 631         if (!TRACEACTIONS || ftrace == NULL)
 632                 return;
 633
 634         lastlog();
 635         fprintf(ftrace, "%-3s interface %-4s ", act, ifp->int_name);
 636         fprintf(ftrace, "%-15s-->%-15s ",
 637                 naddr_ntoa(ifp->int_addr),
 638                 addrname(((ifp->int_if_flags & IFF_POINTOPOINT)
 639                           ? ifp->int_dstaddr : htonl(ifp->int_net)),
 640                          ifp->int_mask, 1));
 641         if (ifp->int_metric != 0)
 642                 fprintf(ftrace, "metric=%d ", ifp->int_metric);
 643         if (!IS_RIP_OUT_OFF(ifp->int_state)
 644             && ifp->int_d_metric != 0)
 645                 fprintf(ftrace, "fake_default=%d ", ifp->int_d_metric);
 646         trace_bits(if_bits, ifp->int_if_flags, 0);
 647         trace_bits(is_bits, ifp->int_state, 0);
 648         fputc('\n',ftrace);
 649 }
 650
 651
 652 void
 653 trace_upslot(struct rt_entry *rt,
 654              struct rt_spare *rts,
 655              struct rt_spare *new)
 656 {
 657         if (!TRACEACTIONS || ftrace == NULL)
 658                 return;
 659
 660         if (rts->rts_gate == new->rts_gate
 661             && rts->rts_router == new->rts_router
 662             && rts->rts_metric == new->rts_metric
 663             && rts->rts_tag == new->rts_tag
 664             && rts->rts_de_ag == new->rts_de_ag)
 665                 return;
 666
 667         lastlog();
 668         if (new->rts_gate == 0) {
 669                 fprintf(ftrace, "Del #%d %-35s ",
 670                         (int)(rts - rt->rt_spares),
 671                         rtname(rt->rt_dst, rt->rt_mask, rts->rts_gate));
 672                 print_rts(rts, 0,0,0,0,
 673                           (rts != rt->rt_spares
 674                            || AGE_RT(rt->rt_state,new->rts_ifp)));
 675
 676         } else if (rts->rts_gate != RIP_DEFAULT) {
 677                 fprintf(ftrace, "Chg #%d %-35s ",
 678                         (int)(rts - rt->rt_spares),
 679                         rtname(rt->rt_dst, rt->rt_mask, rts->rts_gate));
 680                 print_rts(rts, 0,0,
 681                           rts->rts_gate != new->rts_gate,
 682                           rts->rts_tag != new->rts_tag,
 683                           rts != rt->rt_spares || AGE_RT(rt->rt_state,
 684                                                         rt->rt_ifp));
 685
 686                 fprintf(ftrace, "\n       %19s%-16s ", "",
 687                         (new->rts_gate != rts->rts_gate
 688                         ? naddr_ntoa(new->rts_gate) : ""));
 689                 print_rts(new,
 690                           -(new->rts_metric == rts->rts_metric),
 691                           -(new->rts_ifp == rts->rts_ifp),
 692                           0,
 693                           rts->rts_tag != new->rts_tag,
 694                           (new->rts_time != rts->rts_time
 695                            && (rts != rt->rt_spares
 696                                || AGE_RT(rt->rt_state, new->rts_ifp))));
 697
 698         } else {
 699                 fprintf(ftrace, "Add #%d %-35s ",
 700                         (int)(rts - rt->rt_spares),
 701                         rtname(rt->rt_dst, rt->rt_mask, new->rts_gate));
 702                 print_rts(new, 0,0,0,0,
 703                           (rts != rt->rt_spares
 704                            || AGE_RT(rt->rt_state,new->rts_ifp)));
 705         }
 706         fputc('\n',ftrace);
 707 }
 708
 709
 710 /* miscellaneous message checked by the caller
 711  */
 712 void
 713 trace_misc(const char *p, ...)
 714 {
 715         va_list args;
 716
 717         if (ftrace == NULL)
 718                 return;
 719
 720         lastlog();
 721         va_start(args, p);
 722         vfprintf(ftrace, p, args);
 723         fputc('\n',ftrace);
 724 }
 725
 726
 727 /* display a message if tracing actions
 728  */
 729 void
 730 trace_act(const char *p, ...)
 731 {
 732         va_list args;
 733
 734         if (!TRACEACTIONS || ftrace == NULL)
 735                 return;
 736
 737         lastlog();
 738         va_start(args, p);
 739         vfprintf(ftrace, p, args);
 740         fputc('\n',ftrace);
 741 }
 742
 743
 744 /* display a message if tracing packets
 745  */
 746 void
 747 trace_pkt(const char *p, ...)
 748 {
 749         va_list args;
 750
 751         if (!TRACEPACKETS || ftrace == NULL)
 752                 return;
 753
 754         lastlog();
 755         va_start(args, p);
 756         vfprintf(ftrace, p, args);
 757         fputc('\n',ftrace);
 758 }
 759
 760
 761 void
 762 trace_change(struct rt_entry *rt,
 763              u_int      state,
 764              struct     rt_spare *new,
 765              const char *label)
 766 {
 767         if (ftrace == NULL)
 768                 return;
 769
 770         if (rt->rt_metric == new->rts_metric
 771             && rt->rt_gate == new->rts_gate
 772             && rt->rt_router == new->rts_router
 773             && rt->rt_state == state
 774             && rt->rt_tag == new->rts_tag
 775             && rt->rt_de_ag == new->rts_de_ag)
 776                 return;
 777
 778         lastlog();
 779         fprintf(ftrace, "%s %-35s ",
 780                 label, rtname(rt->rt_dst, rt->rt_mask, rt->rt_gate));
 781         print_rts(rt->rt_spares,
 782                   0,0,0,0, AGE_RT(rt->rt_state, rt->rt_ifp));
 783         trace_bits(rs_bits, rt->rt_state, rt->rt_state != state);
 784
 785         fprintf(ftrace, "\n%*s %19s%-16s ",
 786                 (int)strlen(label), "", "",
 787                 (rt->rt_gate != new->rts_gate
 788                  ? naddr_ntoa(new->rts_gate) : ""));
 789         print_rts(new,
 790                   -(new->rts_metric == rt->rt_metric),
 791                   -(new->rts_ifp == rt->rt_ifp),
 792                   0,
 793                   rt->rt_tag != new->rts_tag,
 794                   (rt->rt_time != new->rts_time
 795                    && AGE_RT(rt->rt_state,new->rts_ifp)));
 796         if (rt->rt_state != state)
 797                 trace_bits(rs_bits, state, 1);
 798         fputc('\n',ftrace);
 799 }
 800
 801
 802 void
 803 trace_add_del(const char * action, struct rt_entry *rt)
 804 {
 805         if (ftrace == NULL)
 806                 return;
 807
 808         lastlog();
 809         fprintf(ftrace, "%s    %-35s ",
 810                 action, rtname(rt->rt_dst, rt->rt_mask, rt->rt_gate));
 811         print_rts(rt->rt_spares, 0,0,0,0,AGE_RT(rt->rt_state,rt->rt_ifp));
 812         trace_bits(rs_bits, rt->rt_state, 0);
 813         fputc('\n',ftrace);
 814 }
 815
 816
 817 /* ARGSUSED */
 818 static int
 819 walk_trace(struct radix_node *rn,
 820            struct walkarg *w UNUSED)
 821 {
 822 #define RT ((struct rt_entry *)rn)
 823         struct rt_spare *rts;
 824         int i;
 825
 826         fprintf(ftrace, "  %-35s ",
 827                 rtname(RT->rt_dst, RT->rt_mask, RT->rt_gate));
 828         print_rts(&RT->rt_spares[0], 0,0,0,0, AGE_RT(RT->rt_state, RT->rt_ifp));
 829         trace_bits(rs_bits, RT->rt_state, 0);
 830         if (RT->rt_poison_time >= now_garbage
 831             && RT->rt_poison_metric < RT->rt_metric)
 832                 fprintf(ftrace, "pm=%d@%s",
 833                         RT->rt_poison_metric, ts(RT->rt_poison_time));
 834
 835         rts = &RT->rt_spares[1];
 836         for (i = 1; i < NUM_SPARES; i++, rts++) {
 837                 if (rts->rts_gate != RIP_DEFAULT) {
 838                         fprintf(ftrace,"\n    #%d%15s%-16s ",
 839                                 i, "", naddr_ntoa(rts->rts_gate));
 840                         print_rts(rts, 0,0,0,0,1);
 841                 }
 842         }
 843         fputc('\n',ftrace);
 844
 845         return 0;
 846 }
 847
 848
 849 static void
 850 trace_dump(void)
 851 {
 852         struct interface *ifp;
 853
 854         if (ftrace == NULL)
 855                 return;
 856         lastlog();
 857
 858         fputs("current daemon state:\n", ftrace);
 859         for (ifp = ifnet; ifp != NULL; ifp = ifp->int_next)
 860                 trace_if("", ifp);
 861         rn_walktree(rhead, walk_trace, 0);
 862 }
 863
 864
 865 void
 866 trace_rip(const char *dir1, const char *dir2,
 867           struct sockaddr_in *who,
 868           struct interface *ifp,
 869           struct rip *msg,
 870           int size)                     /* total size of message */
 871 {
 872         struct netinfo *n, *lim;
 873 #       define NA ((struct netauth*)n)
 874         int i, seen_route;
 875
 876         if (!TRACEPACKETS || ftrace == NULL)
 877                 return;
 878
 879         lastlog();
 880         if (msg->rip_cmd >= RIPCMD_MAX
 881             || msg->rip_vers == 0) {
 882                 fprintf(ftrace, "%s bad RIPv%d cmd=%d %s"
 883                         " %s.%d size=%d\n",
 884                         dir1, msg->rip_vers, msg->rip_cmd, dir2,
 885                         naddr_ntoa(who->sin_addr.s_addr),
 886                         ntohs(who->sin_port),
 887                         size);
 888                 return;
 889         }
 890
 891         fprintf(ftrace, "%s RIPv%d %s %s %s.%d%s%s\n",
 892                 dir1, msg->rip_vers, ripcmds[msg->rip_cmd], dir2,
 893                 naddr_ntoa(who->sin_addr.s_addr), ntohs(who->sin_port),
 894                 ifp ? " via " : "", ifp ? ifp->int_name : "");
 895         if (!TRACECONTENTS)
 896                 return;
 897
 898         seen_route = 0;
 899         switch (msg->rip_cmd) {
 900         case RIPCMD_REQUEST:
 901         case RIPCMD_RESPONSE:
 902                 n = msg->rip_nets;
 903                 lim = (struct netinfo *)((char*)msg + size);
 904                 for (; n < lim; n++) {
 905                         if (!seen_route
 906                             && n->n_family == RIP_AF_UNSPEC
 907                             && ntohl(n->n_metric) == HOPCNT_INFINITY
 908                             && msg->rip_cmd == RIPCMD_REQUEST
 909                             && (n+1 == lim
 910                                 || (n+2 == lim
 911                                     && (n+1)->n_family == RIP_AF_AUTH))) {
 912                                 fputs("\tQUERY ", ftrace);
 913                                 if (n->n_dst != 0)
 914                                         fprintf(ftrace, "%s ",
 915                                                 naddr_ntoa(n->n_dst));
 916                                 if (n->n_mask != 0)
 917                                         fprintf(ftrace, "mask=%#x ",
 918                                                 (u_int)ntohl(n->n_mask));
 919                                 if (n->n_nhop != 0)
 920                                         fprintf(ftrace, "nhop=%s ",
 921                                                 naddr_ntoa(n->n_nhop));
 922                                 if (n->n_tag != 0)
 923                                         fprintf(ftrace, "tag=%#x ",
 924                                                 ntohs(n->n_tag));
 925                                 fputc('\n',ftrace);
 926                                 continue;
 927                         }
 928
 929                         if (n->n_family == RIP_AF_AUTH) {
 930                                 if (NA->a_type == RIP_AUTH_PW
 931                                     && n == msg->rip_nets) {
 932                                         fprintf(ftrace, "\tPassword"
 933                                                 " Authentication:"
 934                                                 " \"%s\"\n",
 935                                                 qstring(NA->au.au_pw,
 936                                                         RIP_AUTH_PW_LEN));
 937                                         continue;
 938                                 }
 939
 940                                 if (NA->a_type == RIP_AUTH_MD5
 941                                     && n == msg->rip_nets) {
 942                                         fprintf(ftrace,
 943                                                 "\tMD5 Auth"
 944                                                 " pkt_len=%d KeyID=%u"
 945                                                 " auth_len=%d"
 946                                                 " seqno=%#x"
 947                                                 " rsvd=%#x,%#x\n",
 948                                             ntohs(NA->au.a_md5.md5_pkt_len),
 949                                             NA->au.a_md5.md5_keyid,
 950                                             NA->au.a_md5.md5_auth_len,
 951                                             (int)ntohl(NA->au.a_md5.md5_seqno),
 952                                             (int)ntohs(NA->au.a_md5.rsvd[0]),
 953                                             (int)ntohs(NA->au.a_md5.rsvd[1]));
 954                                         continue;
 955                                 }
 956                                 fprintf(ftrace,
 957                                         "\tAuthentication type %d: ",
 958                                         ntohs(NA->a_type));
 959                                 for (i = 0;
 960                                      i < (int)sizeof(NA->au.au_pw);
 961                                      i++)
 962                                         fprintf(ftrace, "%02x ",
 963                                                 NA->au.au_pw[i]);
 964                                 fputc('\n',ftrace);
 965                                 continue;
 966                         }
 967
 968                         seen_route = 1;
 969                         if (n->n_family != RIP_AF_INET) {
 970                                 fprintf(ftrace,
 971                                         "\t(af %d) %-18s mask=%#x ",
 972                                         ntohs(n->n_family),
 973                                         naddr_ntoa(n->n_dst),
 974                                         (u_int)ntohl(n->n_mask));
 975                         } else if (msg->rip_vers == RIPv1) {
 976                                 fprintf(ftrace, "\t%-18s ",
 977                                         addrname(n->n_dst, ntohl(n->n_mask),
 978                                                  n->n_mask==0 ? 2 : 1));
 979                         } else {
 980                                 fprintf(ftrace, "\t%-18s ",
 981                                         addrname(n->n_dst, ntohl(n->n_mask),
 982                                                  n->n_mask==0 ? 2 : 0));
 983                         }
 984                         fprintf(ftrace, "metric=%-2d ",
 985                                 (u_int)ntohl(n->n_metric));
 986                         if (n->n_nhop != 0)
 987                                 fprintf(ftrace, " nhop=%s ",
 988                                         naddr_ntoa(n->n_nhop));
 989                         if (n->n_tag != 0)
 990                                 fprintf(ftrace, "tag=%#x", ntohs(n->n_tag));
 991                         fputc('\n',ftrace);
 992                 }
 993                 if (size != (char *)n - (char *)msg)
 994                         fprintf(ftrace, "truncated record, len %d\n", size);
 995                 break;
 996
 997         case RIPCMD_TRACEON:
 998                 fprintf(ftrace, "\tfile=\"%.*s\"\n", size-4,
 999                         msg->rip_tracefile);
1000                 break;
1001
1002         case RIPCMD_TRACEOFF:
1003                 break;
1004         }
1005 }