route.c revision 27500
1230130Smav/* 2230130Smav * 3230130Smav * Copyright (c) 1983, 1989, 1991, 1993 4230130Smav * The Regents of the University of California. All rights reserved. 5230130Smav * 6230130Smav * Redistribution and use in source and binary forms, with or without 7230130Smav * modification, are permitted provided that the following conditions 8230130Smav * are met: 9230130Smav * 1. Redistributions of source code must retain the above copyright 10230130Smav * notice, this list of conditions and the following disclaimer. 11230130Smav * 2. Redistributions in binary form must reproduce the above copyright 12230130Smav * notice, this list of conditions and the following disclaimer in the 13230130Smav * documentation and/or other materials provided with the distribution. 14230130Smav * 3. All advertising materials mentioning features or use of this software 15230130Smav * must display the following acknowledgement: 16230130Smav * This product includes software developed by the University of 17230130Smav * California, Berkeley and its contributors. 18230130Smav * 4. Neither the name of the University nor the names of its contributors 19230130Smav * may be used to endorse or promote products derived from this software 20230130Smav * without specific prior written permission. 21230130Smav * 22230130Smav * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23230130Smav * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24230130Smav * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25230130Smav * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26230130Smav * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27230130Smav * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28230130Smav * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29230130Smav * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30230130Smav * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31230130Smav * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32230130Smav * SUCH DAMAGE. 33230130Smav */ 34230130Smav 35230130Smav#ifndef lint 36230130Smavstatic const char copyright[] = 37230130Smav"@(#) Copyright (c) 1983, 1989, 1991, 1993\n\ 38230130Smav The Regents of the University of California. All rights reserved.\n"; 39230130Smav#endif /* not lint */ 40230130Smav 41230130Smav#ifndef lint 42230130Smav/* 43230130Smavstatic char sccsid[] = "@(#)route.c 8.3 (Berkeley) 3/19/94"; 44230130Smav*/ 45230130Smavstatic const char rcsid[] = 46230130Smav "$Id: route.c,v 1.25 1997/06/18 06:30:34 charnier Exp $"; 47230130Smav#endif /* not lint */ 48230130Smav 49230130Smav#include <sys/param.h> 50230130Smav#include <sys/file.h> 51230130Smav#include <sys/socket.h> 52230130Smav#include <sys/ioctl.h> 53230130Smav#include <sys/sysctl.h> 54230130Smav#include <sys/time.h> 55230130Smav 56230130Smav#include <net/if.h> 57230130Smav#include <net/route.h> 58230130Smav#include <net/if_dl.h> 59230130Smav#include <netinet/in.h> 60230130Smav#include <netatalk/at.h> 61230130Smav#ifdef NS 62230130Smav#include <netns/ns.h> 63230130Smav#endif 64230130Smav#include <arpa/inet.h> 65230130Smav#include <netdb.h> 66230130Smav 67230130Smav#include <ctype.h> 68230130Smav#include <err.h> 69230130Smav#include <errno.h> 70230130Smav#include <paths.h> 71230130Smav#include <stdio.h> 72230130Smav#include <stdlib.h> 73230130Smav#include <string.h> 74230130Smav#include <sysexits.h> 75230130Smav#include <time.h> 76230130Smav#include <unistd.h> 77230130Smav 78230130Smavstruct keytab { 79230130Smav char *kt_cp; 80230130Smav int kt_i; 81230130Smav} keywords[] = { 82230130Smav#include "keywords.h" 83230130Smav {0, 0} 84230130Smav}; 85230130Smav 86230130Smavstruct ortentry route; 87230130Smavunion sockunion { 88230130Smav struct sockaddr sa; 89230130Smav struct sockaddr_in sin; 90230130Smav struct sockaddr_at sat; 91230130Smav#ifdef NS 92230130Smav struct sockaddr_ns sns; 93230130Smav#endif 94230130Smav struct sockaddr_dl sdl; 95230571Smav} so_dst, so_gate, so_mask, so_genmask, so_ifa, so_ifp; 96230571Smav 97230130Smavtypedef union sockunion *sup; 98230130Smavint pid, rtm_addrs, uid; 99230130Smavint s; 100230130Smavint forcehost, forcenet, doflush, nflag, af, qflag, tflag, keyword(); 101230130Smavint iflag, verbose, aflen = sizeof (struct sockaddr_in); 102230130Smavint locking, lockrest, debugonly; 103230130Smavstruct rt_metrics rt_metrics; 104230130Smavu_long rtm_inits; 105230130Smavstruct in_addr inet_makeaddr(); 106230130Smavint atalk_aton __P((const char *, struct at_addr *)); 107230130Smavchar *atalk_ntoa __P((struct at_addr)); 108230130Smavchar *routename(), *netname(); 109230130Smavvoid flushroutes(), newroute(), monitor(), sockaddr(), sodump(), bprintf(); 110230130Smavvoid print_getmsg(), print_rtmsg(), pmsg_common(), pmsg_addrs(), mask_addr(); 111230130Smavint getaddr(), rtmsg(), x25_makemask(); 112230130Smavextern char *inet_ntoa(), *iso_ntoa(), *link_ntoa(); 113230130Smav 114230130Smavvoid usage __P((const char *)) __dead2; 115230130Smav 116230130Smavvoid 117230130Smavusage(cp) 118230130Smav const char *cp; 119230130Smav{ 120230130Smav if (cp) 121230130Smav warnx("bad keyword: %s", cp); 122230130Smav (void) fprintf(stderr, 123230130Smav "usage: route [ -nqv ] command [[ modifiers ] args ]\n"); 124230130Smav exit(EX_USAGE); 125230130Smav /* NOTREACHED */ 126230130Smav} 127230130Smav 128230571Smav#define ROUNDUP(a) \ 129230571Smav ((a) > 0 ? (1 + (((a) - 1) | (sizeof(long) - 1))) : sizeof(long)) 130230571Smav#define ADVANCE(x, n) (x += ROUNDUP((n)->sa_len)) 131230571Smav 132230130Smavint 133230571Smavmain(argc, argv) 134230130Smav int argc; 135230130Smav char **argv; 136230130Smav{ 137230130Smav extern int optind; 138230130Smav int ch; 139230130Smav 140230130Smav if (argc < 2) 141230130Smav usage((char *)NULL); 142230130Smav 143230130Smav while ((ch = getopt(argc, argv, "nqdtv")) != EOF) 144230130Smav switch(ch) { 145230130Smav case 'n': 146230130Smav nflag = 1; 147230130Smav break; 148230130Smav case 'q': 149230130Smav qflag = 1; 150230130Smav break; 151230130Smav case 'v': 152230130Smav verbose = 1; 153230130Smav break; 154230130Smav case 't': 155230130Smav tflag = 1; 156230130Smav break; 157230130Smav case 'd': 158230571Smav debugonly = 1; 159230571Smav break; 160230571Smav case '?': 161230571Smav default: 162230130Smav usage((char *)NULL); 163230130Smav } 164230130Smav argc -= optind; 165230130Smav argv += optind; 166230130Smav 167230130Smav pid = getpid(); 168230130Smav uid = getuid(); 169230130Smav if (tflag) 170230130Smav s = open("/dev/null", O_WRONLY, 0); 171230130Smav else 172230130Smav s = socket(PF_ROUTE, SOCK_RAW, 0); 173230130Smav if (s < 0) 174230130Smav err(EX_OSERR, "socket"); 175230130Smav setuid(uid); 176230130Smav if (*argv) 177230571Smav switch (keyword(*argv)) { 178230571Smav case K_GET: 179230571Smav uid = 0; 180230571Smav /* FALLTHROUGH */ 181230571Smav 182230571Smav case K_CHANGE: 183230571Smav case K_ADD: 184230571Smav case K_DELETE: 185230571Smav newroute(argc, argv); 186230571Smav exit(0); 187230571Smav /* NOTREACHED */ 188230571Smav 189230130Smav case K_MONITOR: 190230130Smav monitor(); 191230130Smav /* NOTREACHED */ 192230571Smav 193230571Smav case K_FLUSH: 194230571Smav flushroutes(argc, argv); 195230130Smav exit(0); 196230571Smav /* NOTREACHED */ 197230130Smav } 198230571Smav usage(*argv); 199230130Smav /* NOTREACHED */ 200230130Smav} 201230130Smav 202230130Smav/* 203230130Smav * Purge all entries in the routing tables not 204230130Smav * associated with network interfaces. 205230130Smav */ 206230130Smavvoid 207230130Smavflushroutes(argc, argv) 208230571Smav int argc; 209230571Smav char *argv[]; 210230571Smav{ 211230571Smav size_t needed; 212230571Smav int mib[6], rlen, seqno; 213230571Smav char *buf, *next, *lim; 214230571Smav register struct rt_msghdr *rtm; 215230571Smav 216230571Smav if (uid) { 217230571Smav errx(EX_NOPERM, "must be root to alter routing table"); 218230571Smav } 219230571Smav shutdown(s, 0); /* Don't want to read back our messages */ 220230571Smav if (argc > 1) { 221230571Smav argv++; 222230571Smav if (argc == 2 && **argv == '-') 223230571Smav switch (keyword(*argv + 1)) { 224230571Smav case K_INET: 225230571Smav af = AF_INET; 226230571Smav break; 227230571Smav case K_ATALK: 228230571Smav af = AF_APPLETALK; 229230571Smav break; 230230130Smav#ifdef NS 231230130Smav case K_XNS: 232230130Smav af = AF_NS; 233230130Smav break; 234230130Smav#endif 235230130Smav case K_LINK: 236230130Smav af = AF_LINK; 237230130Smav break; 238230130Smav default: 239230130Smav goto bad; 240230130Smav } else 241230130Smavbad: usage(*argv); 242230130Smav } 243230130Smav mib[0] = CTL_NET; 244230130Smav mib[1] = PF_ROUTE; 245230130Smav mib[2] = 0; /* protocol */ 246230130Smav mib[3] = 0; /* wildcard address family */ 247230130Smav mib[4] = NET_RT_DUMP; 248230130Smav mib[5] = 0; /* no flags */ 249230130Smav if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0) 250230130Smav err(EX_OSERR, "route-sysctl-estimate"); 251230130Smav if ((buf = malloc(needed)) == NULL) 252230130Smav err(EX_OSERR, "malloc"); 253230130Smav if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0) 254230130Smav err(EX_OSERR, "route-sysctl-get"); 255230130Smav lim = buf + needed; 256230130Smav if (verbose) 257230130Smav (void) printf("Examining routing table from sysctl\n"); 258230130Smav seqno = 0; /* ??? */ 259230130Smav for (next = buf; next < lim; next += rtm->rtm_msglen) { 260230130Smav rtm = (struct rt_msghdr *)next; 261230130Smav if (verbose) 262230130Smav print_rtmsg(rtm, rtm->rtm_msglen); 263230130Smav if ((rtm->rtm_flags & RTF_GATEWAY) == 0) 264230130Smav continue; 265230130Smav if (af) { 266230130Smav struct sockaddr *sa = (struct sockaddr *)(rtm + 1); 267230130Smav 268230130Smav if (sa->sa_family != af) 269230130Smav continue; 270230130Smav } 271230130Smav if (debugonly) 272230130Smav continue; 273230130Smav rtm->rtm_type = RTM_DELETE; 274230130Smav rtm->rtm_seq = seqno; 275230130Smav rlen = write(s, next, rtm->rtm_msglen); 276230130Smav if (rlen < (int)rtm->rtm_msglen) { 277230130Smav warn("write to routing socket"); 278230130Smav (void) printf("got only %d for rlen\n", rlen); 279230130Smav break; 280230130Smav } 281230130Smav seqno++; 282230130Smav if (qflag) 283230130Smav continue; 284230130Smav if (verbose) 285230130Smav print_rtmsg(rtm, rlen); 286230130Smav else { 287230130Smav struct sockaddr *sa = (struct sockaddr *)(rtm + 1); 288230130Smav (void) printf("%-20.20s ", rtm->rtm_flags & RTF_HOST ? 289230130Smav routename(sa) : netname(sa)); 290230130Smav sa = (struct sockaddr *)(sa->sa_len + (char *)sa); 291230130Smav (void) printf("%-20.20s ", routename(sa)); 292230130Smav (void) printf("done\n"); 293230130Smav } 294230130Smav } 295230130Smav} 296230130Smav 297230130Smavchar * 298230130Smavroutename(sa) 299230130Smav struct sockaddr *sa; 300230130Smav{ 301230130Smav register char *cp; 302230130Smav static char line[MAXHOSTNAMELEN + 1]; 303230571Smav struct hostent *hp; 304230571Smav static char domain[MAXHOSTNAMELEN + 1]; 305230130Smav static int first = 1; 306230130Smav#ifdef NS 307230130Smav char *ns_print(); 308230130Smav#endif 309230130Smav 310230130Smav if (first) { 311230130Smav first = 0; 312230130Smav if (gethostname(domain, MAXHOSTNAMELEN) == 0 && 313230130Smav (cp = index(domain, '.'))) { 314230130Smav domain[MAXHOSTNAMELEN] = '\0'; 315230130Smav (void) strcpy(domain, cp + 1); 316230130Smav } else 317230130Smav domain[0] = 0; 318230130Smav } 319230130Smav 320230130Smav if (sa->sa_len == 0) 321230571Smav strcpy(line, "default"); 322230571Smav else switch (sa->sa_family) { 323230331Smav 324230571Smav case AF_INET: 325230571Smav { struct in_addr in; 326230571Smav in = ((struct sockaddr_in *)sa)->sin_addr; 327230571Smav 328230331Smav cp = 0; 329230571Smav if (in.s_addr == INADDR_ANY || sa->sa_len < 4) 330230571Smav cp = "default"; 331230571Smav if (cp == 0 && !nflag) { 332230571Smav hp = gethostbyaddr((char *)&in, sizeof (struct in_addr), 333230574Smav AF_INET); 334230571Smav if (hp) { 335230571Smav if ((cp = index(hp->h_name, '.')) && 336230331Smav !strcmp(cp + 1, domain)) 337230331Smav *cp = 0; 338230130Smav cp = hp->h_name; 339230130Smav } 340230130Smav } 341230130Smav if (cp) 342230130Smav strncpy(line, cp, sizeof line); 343230130Smav else { 344230130Smav /* XXX - why not inet_ntoa()? */ 345230130Smav#define C(x) (unsigned)((x) & 0xff) 346230130Smav in.s_addr = ntohl(in.s_addr); 347230130Smav (void) sprintf(line, "%u.%u.%u.%u", C(in.s_addr >> 24), 348230130Smav C(in.s_addr >> 16), C(in.s_addr >> 8), C(in.s_addr)); 349230130Smav } 350230130Smav break; 351230130Smav } 352230130Smav 353230130Smav case AF_APPLETALK: 354230130Smav (void) snprintf(line, sizeof(line), "atalk %s", 355230130Smav atalk_ntoa(((struct sockaddr_at *)sa)->sat_addr)); 356230130Smav break; 357230130Smav 358230130Smav#ifdef NS 359230130Smav case AF_NS: 360230130Smav return (ns_print((struct sockaddr_ns *)sa)); 361230130Smav#endif 362230130Smav 363230130Smav case AF_LINK: 364230130Smav return (link_ntoa((struct sockaddr_dl *)sa)); 365230130Smav 366230130Smav default: 367230130Smav { u_short *s = (u_short *)sa; 368230130Smav u_short *slim = s + ((sa->sa_len + 1) >> 1); 369230130Smav char *cp = line + sprintf(line, "(%d)", sa->sa_family); 370230130Smav char *cpe = line + sizeof(line); 371230130Smav 372230130Smav while (++s < slim && cp < cpe) /* start with sa->sa_data */ 373230130Smav cp += snprintf(cp, cpe - cp, " %x", *s); 374230331Smav break; 375230130Smav } 376230130Smav } 377230130Smav return (line); 378230331Smav} 379230331Smav 380230331Smav/* 381230331Smav * Return the name of the network whose address is given. 382230331Smav * The address is assumed to be that of a net or subnet, not a host. 383230331Smav */ 384230331Smavchar * 385230331Smavnetname(sa) 386230331Smav struct sockaddr *sa; 387230331Smav{ 388230331Smav char *cp = 0; 389230331Smav static char line[MAXHOSTNAMELEN + 1]; 390230331Smav struct netent *np = 0; 391230331Smav u_long net, mask; 392230331Smav register u_long i; 393230331Smav int subnetshift; 394230331Smav#ifdef NS 395230331Smav char *ns_print(); 396230130Smav#endif 397230130Smav 398230130Smav switch (sa->sa_family) { 399230130Smav 400230130Smav case AF_INET: 401230130Smav { struct in_addr in; 402230130Smav in = ((struct sockaddr_in *)sa)->sin_addr; 403230130Smav 404230130Smav i = in.s_addr = ntohl(in.s_addr); 405230130Smav if (in.s_addr == 0) 406230130Smav cp = "default"; 407230130Smav else if (!nflag) { 408230130Smav if (IN_CLASSA(i)) { 409230130Smav mask = IN_CLASSA_NET; 410230130Smav subnetshift = 8; 411230130Smav } else if (IN_CLASSB(i)) { 412230130Smav mask = IN_CLASSB_NET; 413230130Smav subnetshift = 8; 414230130Smav } else { 415230130Smav mask = IN_CLASSC_NET; 416230130Smav subnetshift = 4; 417230130Smav } 418230130Smav /* 419230130Smav * If there are more bits than the standard mask 420230130Smav * would suggest, subnets must be in use. 421230130Smav * Guess at the subnet mask, assuming reasonable 422230130Smav * width subnet fields. 423230130Smav */ 424230130Smav while (in.s_addr &~ mask) 425230130Smav mask = (long)mask >> subnetshift; 426230130Smav net = in.s_addr & mask; 427230130Smav while ((mask & 1) == 0) 428230130Smav mask >>= 1, net >>= 1; 429230130Smav np = getnetbyaddr(net, AF_INET); 430230130Smav if (np) 431230130Smav cp = np->n_name; 432230130Smav } 433230130Smav if (cp) 434230130Smav strncpy(line, cp, sizeof(line)); 435230130Smav else if ((in.s_addr & 0xffffff) == 0) 436230130Smav (void) sprintf(line, "%u", C(in.s_addr >> 24)); 437230130Smav else if ((in.s_addr & 0xffff) == 0) 438230130Smav (void) sprintf(line, "%u.%u", C(in.s_addr >> 24), 439230130Smav C(in.s_addr >> 16)); 440230130Smav else if ((in.s_addr & 0xff) == 0) 441230130Smav (void) sprintf(line, "%u.%u.%u", C(in.s_addr >> 24), 442230130Smav C(in.s_addr >> 16), C(in.s_addr >> 8)); 443230130Smav else 444230130Smav (void) sprintf(line, "%u.%u.%u.%u", C(in.s_addr >> 24), 445230130Smav C(in.s_addr >> 16), C(in.s_addr >> 8), 446230130Smav C(in.s_addr)); 447230130Smav break; 448230130Smav } 449230130Smav 450230130Smav case AF_APPLETALK: 451230130Smav (void) snprintf(line, sizeof(line), "atalk %s", 452230130Smav atalk_ntoa(((struct sockaddr_at *)sa)->sat_addr)); 453230130Smav break; 454230130Smav 455230130Smav#ifdef NS 456230130Smav case AF_NS: 457230130Smav return (ns_print((struct sockaddr_ns *)sa)); 458230130Smav break; 459230130Smav#endif 460230130Smav 461230130Smav case AF_LINK: 462230130Smav return (link_ntoa((struct sockaddr_dl *)sa)); 463230130Smav 464230130Smav 465230130Smav default: 466230130Smav { u_short *s = (u_short *)sa->sa_data; 467230130Smav u_short *slim = s + ((sa->sa_len + 1)>>1); 468230130Smav char *cp = line + sprintf(line, "af %d:", sa->sa_family); 469230130Smav char *cpe = line + sizeof(line); 470230130Smav 471230130Smav while (s < slim && cp < cpe) 472230130Smav cp += snprintf(cp, cpe - cp, " %x", *s++); 473230130Smav break; 474230130Smav } 475230130Smav } 476230130Smav return (line); 477230130Smav} 478230130Smav 479230130Smavvoid 480230130Smavset_metric(value, key) 481230130Smav char *value; 482230130Smav int key; 483230130Smav{ 484230130Smav int flag = 0; 485230130Smav u_long noval, *valp = &noval; 486230130Smav 487230130Smav switch (key) { 488230130Smav#define caseof(x, y, z) case x: valp = &rt_metrics.z; flag = y; break 489230130Smav caseof(K_MTU, RTV_MTU, rmx_mtu); 490230130Smav caseof(K_HOPCOUNT, RTV_HOPCOUNT, rmx_hopcount); 491230130Smav caseof(K_EXPIRE, RTV_EXPIRE, rmx_expire); 492230130Smav caseof(K_RECVPIPE, RTV_RPIPE, rmx_recvpipe); 493230130Smav caseof(K_SENDPIPE, RTV_SPIPE, rmx_sendpipe); 494230130Smav caseof(K_SSTHRESH, RTV_SSTHRESH, rmx_ssthresh); 495230130Smav caseof(K_RTT, RTV_RTT, rmx_rtt); 496230130Smav caseof(K_RTTVAR, RTV_RTTVAR, rmx_rttvar); 497230130Smav } 498230130Smav rtm_inits |= flag; 499230130Smav if (lockrest || locking) 500230130Smav rt_metrics.rmx_locks |= flag; 501230130Smav if (locking) 502230130Smav locking = 0; 503230130Smav *valp = atoi(value); 504230130Smav} 505230130Smav 506230130Smavvoid 507230130Smavnewroute(argc, argv) 508230130Smav int argc; 509230130Smav register char **argv; 510230130Smav{ 511230130Smav char *cmd, *dest = "", *gateway = "", *err; 512230130Smav int ishost = 0, ret, attempts, oerrno, flags = RTF_STATIC; 513230130Smav int key; 514230130Smav struct hostent *hp = 0; 515230130Smav 516230130Smav if (uid) { 517230130Smav errx(EX_NOPERM, "must be root to alter routing table"); 518230130Smav } 519230130Smav cmd = argv[0]; 520230130Smav if (*cmd != 'g') 521230130Smav shutdown(s, 0); /* Don't want to read back our messages */ 522230130Smav while (--argc > 0) { 523230130Smav if (**(++argv)== '-') { 524230130Smav switch (key = keyword(1 + *argv)) { 525230130Smav case K_LINK: 526230130Smav af = AF_LINK; 527230130Smav aflen = sizeof(struct sockaddr_dl); 528230130Smav break; 529230130Smav case K_INET: 530230130Smav af = AF_INET; 531230130Smav aflen = sizeof(struct sockaddr_in); 532230130Smav break; 533230130Smav case K_ATALK: 534230130Smav af = AF_APPLETALK; 535230130Smav aflen = sizeof(struct sockaddr_at); 536230130Smav break; 537230130Smav case K_SA: 538230130Smav af = PF_ROUTE; 539230130Smav aflen = sizeof(union sockunion); 540230130Smav break; 541230130Smav#ifdef NS 542230130Smav case K_XNS: 543230130Smav af = AF_NS; 544230130Smav aflen = sizeof(struct sockaddr_ns); 545230130Smav break; 546230130Smav#endif 547230130Smav case K_IFACE: 548230130Smav case K_INTERFACE: 549230130Smav iflag++; 550230130Smav break; 551230130Smav case K_NOSTATIC: 552230130Smav flags &= ~RTF_STATIC; 553230130Smav break; 554230130Smav case K_LLINFO: 555230130Smav flags |= RTF_LLINFO; 556230130Smav break; 557230130Smav case K_LOCK: 558230326Smav locking = 1; 559230130Smav break; 560230130Smav case K_LOCKREST: 561230130Smav lockrest = 1; 562230130Smav break; 563230130Smav case K_HOST: 564230326Smav forcehost++; 565230130Smav break; 566230130Smav case K_REJECT: 567230130Smav flags |= RTF_REJECT; 568230130Smav break; 569230130Smav case K_BLACKHOLE: 570230130Smav flags |= RTF_BLACKHOLE; 571230130Smav break; 572230130Smav case K_PROTO1: 573230130Smav flags |= RTF_PROTO1; 574230130Smav break; 575230130Smav case K_PROTO2: 576230130Smav flags |= RTF_PROTO2; 577230130Smav break; 578230130Smav case K_CLONING: 579230130Smav flags |= RTF_CLONING; 580230130Smav break; 581230130Smav case K_XRESOLVE: 582230130Smav flags |= RTF_XRESOLVE; 583230130Smav break; 584230130Smav case K_STATIC: 585230130Smav flags |= RTF_STATIC; 586230130Smav break; 587230130Smav case K_IFA: 588230130Smav argc--; 589230130Smav (void) getaddr(RTA_IFA, *++argv, 0); 590230130Smav break; 591230130Smav case K_IFP: 592230130Smav argc--; 593230130Smav (void) getaddr(RTA_IFP, *++argv, 0); 594230130Smav break; 595230130Smav case K_GENMASK: 596230130Smav argc--; 597230130Smav (void) getaddr(RTA_GENMASK, *++argv, 0); 598230130Smav break; 599230130Smav case K_GATEWAY: 600230130Smav argc--; 601230130Smav (void) getaddr(RTA_GATEWAY, *++argv, 0); 602230130Smav break; 603230130Smav case K_DST: 604230130Smav argc--; 605230130Smav ishost = getaddr(RTA_DST, *++argv, &hp); 606230130Smav dest = *argv; 607230130Smav break; 608230130Smav case K_NETMASK: 609230130Smav argc--; 610230130Smav (void) getaddr(RTA_NETMASK, *++argv, 0); 611230130Smav /* FALLTHROUGH */ 612230130Smav case K_NET: 613230130Smav forcenet++; 614230130Smav break; 615230130Smav case K_MTU: 616230130Smav case K_HOPCOUNT: 617230130Smav case K_EXPIRE: 618230130Smav case K_RECVPIPE: 619230130Smav case K_SENDPIPE: 620230130Smav case K_SSTHRESH: 621230130Smav case K_RTT: 622230130Smav case K_RTTVAR: 623230130Smav argc--; 624230130Smav set_metric(*++argv, key); 625230130Smav break; 626230130Smav default: 627230130Smav usage(1+*argv); 628230130Smav } 629230130Smav } else { 630230130Smav if ((rtm_addrs & RTA_DST) == 0) { 631230130Smav dest = *argv; 632230130Smav ishost = getaddr(RTA_DST, *argv, &hp); 633230130Smav } else if ((rtm_addrs & RTA_GATEWAY) == 0) { 634230130Smav gateway = *argv; 635230130Smav (void) getaddr(RTA_GATEWAY, *argv, &hp); 636230130Smav } else { 637230130Smav (void) getaddr(RTA_NETMASK, *argv, 0); 638230130Smav } 639230130Smav } 640230130Smav } 641230130Smav if (forcehost) 642230130Smav ishost = 1; 643230130Smav if (forcenet) 644230130Smav ishost = 0; 645230130Smav flags |= RTF_UP; 646230130Smav if (ishost) 647230130Smav flags |= RTF_HOST; 648230130Smav if (iflag == 0) 649230130Smav flags |= RTF_GATEWAY; 650230130Smav for (attempts = 1; ; attempts++) { 651230130Smav errno = 0; 652230130Smav if ((ret = rtmsg(*cmd, flags)) == 0) 653230130Smav break; 654230130Smav if (errno != ENETUNREACH && errno != ESRCH) 655230130Smav break; 656230130Smav if (af == AF_INET && *gateway && hp && hp->h_addr_list[1]) { 657230130Smav hp->h_addr_list++; 658230130Smav bcopy(hp->h_addr_list[0], &so_gate.sin.sin_addr, 659230130Smav hp->h_length); 660230130Smav } else 661230130Smav break; 662230130Smav } 663230130Smav if (*cmd == 'g') 664230130Smav exit(0); 665230130Smav oerrno = errno; 666230130Smav (void) printf("%s %s %s", cmd, ishost? "host" : "net", dest); 667230130Smav if (*gateway) { 668230130Smav (void) printf(": gateway %s", gateway); 669230130Smav if (attempts > 1 && ret == 0 && af == AF_INET) 670230130Smav (void) printf(" (%s)", 671230130Smav inet_ntoa(((struct sockaddr_in *)&route.rt_gateway)->sin_addr)); 672230130Smav } 673230130Smav if (ret == 0) 674230130Smav (void) printf("\n"); 675230130Smav else { 676230130Smav switch (oerrno) { 677230130Smav case ESRCH: 678230130Smav err = "not in table"; 679230130Smav break; 680230130Smav case EBUSY: 681230130Smav err = "entry in use"; 682230130Smav break; 683230130Smav case ENOBUFS: 684230130Smav err = "routing table overflow"; 685230130Smav break; 686230130Smav default: 687230130Smav err = strerror(oerrno); 688230130Smav break; 689230130Smav } 690230130Smav (void) printf(": %s\n", err); 691230130Smav } 692230130Smav} 693230130Smav 694230130Smavvoid 695230130Smavinet_makenetandmask(net, sin, bits) 696230130Smav u_long net, bits; 697230130Smav register struct sockaddr_in *sin; 698230130Smav{ 699230130Smav u_long addr, mask = 0; 700230130Smav register char *cp; 701230130Smav 702230130Smav rtm_addrs |= RTA_NETMASK; 703230130Smav if (net == 0) 704230130Smav mask = addr = 0; 705230130Smav else if (bits) { 706230130Smav addr = net; 707230130Smav mask = 0xffffffff << (32 - bits); 708230130Smav } else if (net < 128) { 709230130Smav addr = net << IN_CLASSA_NSHIFT; 710230130Smav mask = IN_CLASSA_NET; 711230130Smav } else if (net < 65536) { 712230130Smav addr = net << IN_CLASSB_NSHIFT; 713230130Smav mask = IN_CLASSB_NET; 714230130Smav } else if (net < 16777216L) { 715 addr = net << IN_CLASSC_NSHIFT; 716 mask = IN_CLASSC_NET; 717 } else { 718 addr = net; 719 if ((addr & IN_CLASSA_HOST) == 0) 720 mask = IN_CLASSA_NET; 721 else if ((addr & IN_CLASSB_HOST) == 0) 722 mask = IN_CLASSB_NET; 723 else if ((addr & IN_CLASSC_HOST) == 0) 724 mask = IN_CLASSC_NET; 725 else 726 mask = -1; 727 } 728 sin->sin_addr.s_addr = htonl(addr); 729 sin = &so_mask.sin; 730 sin->sin_addr.s_addr = htonl(mask); 731 sin->sin_len = 0; 732 sin->sin_family = 0; 733 cp = (char *)(&sin->sin_addr + 1); 734 while (*--cp == 0 && cp > (char *)sin) 735 ; 736 sin->sin_len = 1 + cp - (char *)sin; 737} 738 739/* 740 * Interpret an argument as a network address of some kind, 741 * returning 1 if a host address, 0 if a network address. 742 */ 743int 744getaddr(which, s, hpp) 745 int which; 746 char *s; 747 struct hostent **hpp; 748{ 749 register sup su; 750#ifdef NS 751 struct ns_addr ns_addr(); 752#endif 753 struct hostent *hp; 754 struct netent *np; 755 u_long val; 756 char *q,qs; 757 758 if (af == 0) { 759 af = AF_INET; 760 aflen = sizeof(struct sockaddr_in); 761 } 762 rtm_addrs |= which; 763 switch (which) { 764 case RTA_DST: 765 su = &so_dst; 766 break; 767 case RTA_GATEWAY: 768 su = &so_gate; 769 if (iflag) { 770 #define MAX_IFACES 400 771 int sock; 772 struct ifreq iflist[MAX_IFACES]; 773 struct ifconf ifconf; 774 struct ifreq *ifr, *ifr_end; 775 struct sockaddr_dl *dl, *sdl = NULL; 776 777 /* Get socket */ 778 if ((sock = socket(PF_INET, SOCK_DGRAM, 0)) < 0) 779 err(1, "socket"); 780 781 /* Get interface list */ 782 ifconf.ifc_req = iflist; 783 ifconf.ifc_len = sizeof(iflist); 784 if (ioctl(sock, SIOCGIFCONF, &ifconf) < 0) 785 err(1, "ioctl(SIOCGIFCONF)"); 786 close(sock); 787 788 /* Look for this interface in the list */ 789 for (ifr = ifconf.ifc_req, 790 ifr_end = (struct ifreq *) 791 (ifconf.ifc_buf + ifconf.ifc_len); 792 ifr < ifr_end; 793 ifr = (struct ifreq *) ((char *) &ifr->ifr_addr 794 + ifr->ifr_addr.sa_len)) { 795 dl = (struct sockaddr_dl *)&ifr->ifr_addr; 796 if (ifr->ifr_addr.sa_family == AF_LINK 797 && (ifr->ifr_flags & IFF_POINTOPOINT) 798 && !strncmp(s, dl->sdl_data, dl->sdl_nlen) 799 && s[dl->sdl_nlen] == 0) { 800 sdl = dl; 801 break; 802 } 803 } 804 805 /* If we found it, then use it */ 806 if (sdl) { 807 su->sdl = *sdl; 808 return(1); 809 } 810 } 811 break; 812 case RTA_NETMASK: 813 su = &so_mask; 814 break; 815 case RTA_GENMASK: 816 su = &so_genmask; 817 break; 818 case RTA_IFP: 819 su = &so_ifp; 820 break; 821 case RTA_IFA: 822 su = &so_ifa; 823 break; 824 default: 825 usage("Internal Error"); 826 /*NOTREACHED*/ 827 } 828 su->sa.sa_len = aflen; 829 su->sa.sa_family = af; /* cases that don't want it have left already */ 830 if (strcmp(s, "default") == 0) { 831 /* 832 * Default is net 0.0.0.0/0 833 */ 834 switch (which) { 835 case RTA_DST: 836 forcenet++; 837 /* bzero(su, sizeof(*su)); *//* for readability */ 838 (void) getaddr(RTA_NETMASK, s, 0); 839 break; 840 case RTA_NETMASK: 841 case RTA_GENMASK: 842 /* bzero(su, sizeof(*su)); *//* for readability */ 843 } 844 return (0); 845 } 846 switch (af) { 847#ifdef NS 848 case AF_NS: 849 if (which == RTA_DST) { 850 extern short ns_bh[3]; 851 struct sockaddr_ns *sms = &(so_mask.sns); 852 bzero((char *)sms, sizeof(*sms)); 853 sms->sns_family = 0; 854 sms->sns_len = 6; 855 sms->sns_addr.x_net = *(union ns_net *)ns_bh; 856 rtm_addrs |= RTA_NETMASK; 857 } 858 su->sns.sns_addr = ns_addr(s); 859 return (!ns_nullhost(su->sns.sns_addr)); 860#endif 861 862 863 case AF_APPLETALK: 864 if (!atalk_aton(s, &su->sat.sat_addr)) 865 errx(EX_NOHOST, "bad address: %s", s); 866 rtm_addrs |= RTA_NETMASK; 867 return(forcehost || su->sat.sat_addr.s_node != 0); 868 869 case AF_LINK: 870 link_addr(s, &su->sdl); 871 return (1); 872 873 874 case PF_ROUTE: 875 su->sa.sa_len = sizeof(*su); 876 sockaddr(s, &su->sa); 877 return (1); 878 879 case AF_INET: 880 default: 881 break; 882 } 883 884 if (hpp == NULL) 885 hpp = &hp; 886 *hpp = NULL; 887 888 q = strchr(s,'/'); 889 if (q && which == RTA_DST) { 890 qs = *q; 891 *q = '\0'; 892 if (((val = inet_addr(s)) != INADDR_NONE)) { 893 inet_makenetandmask( 894 htonl(val), &su->sin, strtoul(q+1, 0, 0)); 895 return (0); 896 } 897 *q =qs; 898 } 899 if (((val = inet_addr(s)) != INADDR_NONE) && 900 (which != RTA_DST || forcenet == 0)) { 901 su->sin.sin_addr.s_addr = val; 902 if (inet_lnaof(su->sin.sin_addr) != INADDR_ANY) 903 return (1); 904 else { 905 val = ntohl(val); 906 goto netdone; 907 } 908 } 909 if ((val = inet_network(s)) != INADDR_NONE || 910 (forcehost == 0 && (np = getnetbyname(s)) != NULL && 911 (val = np->n_net) != 0)) { 912netdone: 913 if (which == RTA_DST) 914 inet_makenetandmask(val, &su->sin, 0); 915 return (0); 916 } 917 hp = gethostbyname(s); 918 if (hp) { 919 *hpp = hp; 920 su->sin.sin_family = hp->h_addrtype; 921 bcopy(hp->h_addr, (char *)&su->sin.sin_addr, hp->h_length); 922 return (1); 923 } 924 errx(EX_NOHOST, "bad address: %s", s); 925} 926 927 928#ifdef NS 929short ns_nullh[] = {0,0,0}; 930short ns_bh[] = {-1,-1,-1}; 931 932char * 933ns_print(sns) 934 struct sockaddr_ns *sns; 935{ 936 struct ns_addr work; 937 union { union ns_net net_e; u_long long_e; } net; 938 u_short port; 939 static char mybuf[50+MAXHOSTNAMELEN], cport[10], chost[25]; 940 char *host = ""; 941 register char *p; 942 register u_char *q; 943 944 work = sns->sns_addr; 945 port = ntohs(work.x_port); 946 work.x_port = 0; 947 net.net_e = work.x_net; 948 if (ns_nullhost(work) && net.long_e == 0) { 949 if (!port) 950 return ("*.*"); 951 (void) sprintf(mybuf, "*.%XH", port); 952 return (mybuf); 953 } 954 955 if (bcmp((char *)ns_bh, (char *)work.x_host.c_host, 6) == 0) 956 host = "any"; 957 else if (bcmp((char *)ns_nullh, (char *)work.x_host.c_host, 6) == 0) 958 host = "*"; 959 else { 960 q = work.x_host.c_host; 961 (void) sprintf(chost, "%02X%02X%02X%02X%02X%02XH", 962 q[0], q[1], q[2], q[3], q[4], q[5]); 963 for (p = chost; *p == '0' && p < chost + 12; p++) 964 /* void */; 965 host = p; 966 } 967 if (port) 968 (void) sprintf(cport, ".%XH", htons(port)); 969 else 970 *cport = 0; 971 972 (void) snprintf(mybuf, sizeof(mybuf), "%lxH.%s%s", 973 (unsigned long)ntohl(net.long_e), 974 host, cport); 975 return (mybuf); 976} 977#endif 978 979void 980interfaces() 981{ 982 size_t needed; 983 int mib[6]; 984 char *buf, *lim, *next; 985 register struct rt_msghdr *rtm; 986 987 mib[0] = CTL_NET; 988 mib[1] = PF_ROUTE; 989 mib[2] = 0; /* protocol */ 990 mib[3] = 0; /* wildcard address family */ 991 mib[4] = NET_RT_IFLIST; 992 mib[5] = 0; /* no flags */ 993 if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0) 994 err(EX_OSERR, "route-sysctl-estimate"); 995 if ((buf = malloc(needed)) == NULL) 996 err(EX_OSERR, "malloc"); 997 if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0) 998 err(EX_OSERR, "actual retrieval of interface table"); 999 lim = buf + needed; 1000 for (next = buf; next < lim; next += rtm->rtm_msglen) { 1001 rtm = (struct rt_msghdr *)next; 1002 print_rtmsg(rtm, rtm->rtm_msglen); 1003 } 1004} 1005 1006void 1007monitor() 1008{ 1009 int n; 1010 char msg[2048]; 1011 1012 verbose = 1; 1013 if (debugonly) { 1014 interfaces(); 1015 exit(0); 1016 } 1017 for(;;) { 1018 n = read(s, msg, 2048); 1019 (void) printf("got message of size %d\n", n); 1020 print_rtmsg((struct rt_msghdr *)msg, n); 1021 } 1022} 1023 1024struct { 1025 struct rt_msghdr m_rtm; 1026 char m_space[512]; 1027} m_rtmsg; 1028 1029int 1030rtmsg(cmd, flags) 1031 int cmd, flags; 1032{ 1033 static int seq; 1034 int rlen; 1035 register char *cp = m_rtmsg.m_space; 1036 register int l; 1037 1038#define NEXTADDR(w, u) \ 1039 if (rtm_addrs & (w)) {\ 1040 l = ROUNDUP(u.sa.sa_len); bcopy((char *)&(u), cp, l); cp += l;\ 1041 if (verbose) sodump(&(u),"u");\ 1042 } 1043 1044 errno = 0; 1045 bzero((char *)&m_rtmsg, sizeof(m_rtmsg)); 1046 if (cmd == 'a') 1047 cmd = RTM_ADD; 1048 else if (cmd == 'c') 1049 cmd = RTM_CHANGE; 1050 else if (cmd == 'g') { 1051 cmd = RTM_GET; 1052 if (so_ifp.sa.sa_family == 0) { 1053 so_ifp.sa.sa_family = AF_LINK; 1054 so_ifp.sa.sa_len = sizeof(struct sockaddr_dl); 1055 rtm_addrs |= RTA_IFP; 1056 } 1057 } else 1058 cmd = RTM_DELETE; 1059#define rtm m_rtmsg.m_rtm 1060 rtm.rtm_type = cmd; 1061 rtm.rtm_flags = flags; 1062 rtm.rtm_version = RTM_VERSION; 1063 rtm.rtm_seq = ++seq; 1064 rtm.rtm_addrs = rtm_addrs; 1065 rtm.rtm_rmx = rt_metrics; 1066 rtm.rtm_inits = rtm_inits; 1067 1068 if (rtm_addrs & RTA_NETMASK) 1069 mask_addr(); 1070 NEXTADDR(RTA_DST, so_dst); 1071 NEXTADDR(RTA_GATEWAY, so_gate); 1072 NEXTADDR(RTA_NETMASK, so_mask); 1073 NEXTADDR(RTA_GENMASK, so_genmask); 1074 NEXTADDR(RTA_IFP, so_ifp); 1075 NEXTADDR(RTA_IFA, so_ifa); 1076 rtm.rtm_msglen = l = cp - (char *)&m_rtmsg; 1077 if (verbose) 1078 print_rtmsg(&rtm, l); 1079 if (debugonly) 1080 return (0); 1081 if ((rlen = write(s, (char *)&m_rtmsg, l)) < 0) { 1082 perror("writing to routing socket"); 1083 return (-1); 1084 } 1085 if (cmd == RTM_GET) { 1086 do { 1087 l = read(s, (char *)&m_rtmsg, sizeof(m_rtmsg)); 1088 } while (l > 0 && (rtm.rtm_seq != seq || rtm.rtm_pid != pid)); 1089 if (l < 0) 1090 warn("read from routing socket"); 1091 else 1092 print_getmsg(&rtm, l); 1093 } 1094#undef rtm 1095 return (0); 1096} 1097 1098void 1099mask_addr() 1100{ 1101 int olen = so_mask.sa.sa_len; 1102 register char *cp1 = olen + (char *)&so_mask, *cp2; 1103 1104 for (so_mask.sa.sa_len = 0; cp1 > (char *)&so_mask; ) 1105 if (*--cp1 != 0) { 1106 so_mask.sa.sa_len = 1 + cp1 - (char *)&so_mask; 1107 break; 1108 } 1109 if ((rtm_addrs & RTA_DST) == 0) 1110 return; 1111 switch (so_dst.sa.sa_family) { 1112#ifdef NS 1113 case AF_NS: 1114#endif 1115 case AF_INET: 1116 case AF_APPLETALK: 1117 case 0: 1118 return; 1119 } 1120 cp1 = so_mask.sa.sa_len + 1 + (char *)&so_dst; 1121 cp2 = so_dst.sa.sa_len + 1 + (char *)&so_dst; 1122 while (cp2 > cp1) 1123 *--cp2 = 0; 1124 cp2 = so_mask.sa.sa_len + 1 + (char *)&so_mask; 1125 while (cp1 > so_dst.sa.sa_data) 1126 *--cp1 &= *--cp2; 1127} 1128 1129char *msgtypes[] = { 1130 "", 1131 "RTM_ADD: Add Route", 1132 "RTM_DELETE: Delete Route", 1133 "RTM_CHANGE: Change Metrics or flags", 1134 "RTM_GET: Report Metrics", 1135 "RTM_LOSING: Kernel Suspects Partitioning", 1136 "RTM_REDIRECT: Told to use different route", 1137 "RTM_MISS: Lookup failed on this address", 1138 "RTM_LOCK: fix specified metrics", 1139 "RTM_OLDADD: caused by SIOCADDRT", 1140 "RTM_OLDDEL: caused by SIOCDELRT", 1141 "RTM_RESOLVE: Route created by cloning", 1142 "RTM_NEWADDR: address being added to iface", 1143 "RTM_DELADDR: address being removed from iface", 1144 "RTM_IFINFO: iface status change", 1145 "RTM_NEWMADDR: new multicast group membership on iface", 1146 "RTM_DELMADDR: multicast group membership removed from iface", 1147 0, 1148}; 1149 1150char metricnames[] = 1151"\011pksent\010rttvar\7rtt\6ssthresh\5sendpipe\4recvpipe\3expire\2hopcount" 1152"\1mtu"; 1153char routeflags[] = 1154"\1UP\2GATEWAY\3HOST\4REJECT\5DYNAMIC\6MODIFIED\7DONE\010MASK_PRESENT" 1155"\011CLONING\012XRESOLVE\013LLINFO\014STATIC\015BLACKHOLE\016b016" 1156"\017PROTO2\020PROTO1\021PRCLONING\022WASCLONED\023PROTO3\024CHAINDELETE" 1157"\025PINNED\026LOCAL\027BROADCAST\030MULTICAST"; 1158char ifnetflags[] = 1159"\1UP\2BROADCAST\3DEBUG\4LOOPBACK\5PTP\6b6\7RUNNING\010NOARP" 1160"\011PPROMISC\012ALLMULTI\013OACTIVE\014SIMPLEX\015LINK0\016LINK1" 1161"\017LINK2\020MULTICAST"; 1162char addrnames[] = 1163"\1DST\2GATEWAY\3NETMASK\4GENMASK\5IFP\6IFA\7AUTHOR\010BRD"; 1164 1165void 1166print_rtmsg(rtm, msglen) 1167 register struct rt_msghdr *rtm; 1168 int msglen; 1169{ 1170 struct if_msghdr *ifm; 1171 struct ifa_msghdr *ifam; 1172#ifdef RTM_NEWMADDR 1173 struct ifma_msghdr *ifmam; 1174#endif 1175 1176 if (verbose == 0) 1177 return; 1178 if (rtm->rtm_version != RTM_VERSION) { 1179 (void) printf("routing message version %d not understood\n", 1180 rtm->rtm_version); 1181 return; 1182 } 1183 (void)printf("%s: len %d, ", msgtypes[rtm->rtm_type], rtm->rtm_msglen); 1184 switch (rtm->rtm_type) { 1185 case RTM_IFINFO: 1186 ifm = (struct if_msghdr *)rtm; 1187 (void) printf("if# %d, flags:", ifm->ifm_index); 1188 bprintf(stdout, ifm->ifm_flags, ifnetflags); 1189 pmsg_addrs((char *)(ifm + 1), ifm->ifm_addrs); 1190 break; 1191 case RTM_NEWADDR: 1192 case RTM_DELADDR: 1193 ifam = (struct ifa_msghdr *)rtm; 1194 (void) printf("metric %d, flags:", ifam->ifam_metric); 1195 bprintf(stdout, ifam->ifam_flags, routeflags); 1196 pmsg_addrs((char *)(ifam + 1), ifam->ifam_addrs); 1197 break; 1198#ifdef RTM_NEWMADDR 1199 case RTM_NEWMADDR: 1200 case RTM_DELMADDR: 1201 ifmam = (struct ifma_msghdr *)rtm; 1202 pmsg_addrs((char *)(ifmam + 1), ifmam->ifmam_addrs); 1203 break; 1204#endif 1205 default: 1206 (void) printf("pid: %ld, seq %d, errno %d, flags:", 1207 (long)rtm->rtm_pid, rtm->rtm_seq, rtm->rtm_errno); 1208 bprintf(stdout, rtm->rtm_flags, routeflags); 1209 pmsg_common(rtm); 1210 } 1211} 1212 1213void 1214print_getmsg(rtm, msglen) 1215 register struct rt_msghdr *rtm; 1216 int msglen; 1217{ 1218 struct sockaddr *dst = NULL, *gate = NULL, *mask = NULL; 1219 struct sockaddr_dl *ifp = NULL; 1220 register struct sockaddr *sa; 1221 register char *cp; 1222 register int i; 1223 1224 (void) printf(" route to: %s\n", routename(&so_dst)); 1225 if (rtm->rtm_version != RTM_VERSION) { 1226 warnx("routing message version %d not understood", 1227 rtm->rtm_version); 1228 return; 1229 } 1230 if (rtm->rtm_msglen > msglen) { 1231 warnx("message length mismatch, in packet %d, returned %d\n", 1232 rtm->rtm_msglen, msglen); 1233 } 1234 if (rtm->rtm_errno) { 1235 errno = rtm->rtm_errno; 1236 warn("message indicates error %d", errno); 1237 return; 1238 } 1239 cp = ((char *)(rtm + 1)); 1240 if (rtm->rtm_addrs) 1241 for (i = 1; i; i <<= 1) 1242 if (i & rtm->rtm_addrs) { 1243 sa = (struct sockaddr *)cp; 1244 switch (i) { 1245 case RTA_DST: 1246 dst = sa; 1247 break; 1248 case RTA_GATEWAY: 1249 gate = sa; 1250 break; 1251 case RTA_NETMASK: 1252 mask = sa; 1253 break; 1254 case RTA_IFP: 1255 if (sa->sa_family == AF_LINK && 1256 ((struct sockaddr_dl *)sa)->sdl_nlen) 1257 ifp = (struct sockaddr_dl *)sa; 1258 break; 1259 } 1260 ADVANCE(cp, sa); 1261 } 1262 if (dst && mask) 1263 mask->sa_family = dst->sa_family; /* XXX */ 1264 if (dst) 1265 (void)printf("destination: %s\n", routename(dst)); 1266 if (mask) { 1267 int savenflag = nflag; 1268 1269 nflag = 1; 1270 (void)printf(" mask: %s\n", routename(mask)); 1271 nflag = savenflag; 1272 } 1273 if (gate && rtm->rtm_flags & RTF_GATEWAY) 1274 (void)printf(" gateway: %s\n", routename(gate)); 1275 if (ifp) 1276 (void)printf(" interface: %.*s\n", 1277 ifp->sdl_nlen, ifp->sdl_data); 1278 (void)printf(" flags: "); 1279 bprintf(stdout, rtm->rtm_flags, routeflags); 1280 1281#define lock(f) ((rtm->rtm_rmx.rmx_locks & __CONCAT(RTV_,f)) ? 'L' : ' ') 1282#define msec(u) (((u) + 500) / 1000) /* usec to msec */ 1283 1284 (void) printf("\n%s\n", "\ 1285 recvpipe sendpipe ssthresh rtt,msec rttvar hopcount mtu expire"); 1286 printf("%8ld%c ", rtm->rtm_rmx.rmx_recvpipe, lock(RPIPE)); 1287 printf("%8ld%c ", rtm->rtm_rmx.rmx_sendpipe, lock(SPIPE)); 1288 printf("%8ld%c ", rtm->rtm_rmx.rmx_ssthresh, lock(SSTHRESH)); 1289 printf("%8ld%c ", msec(rtm->rtm_rmx.rmx_rtt), lock(RTT)); 1290 printf("%8ld%c ", msec(rtm->rtm_rmx.rmx_rttvar), lock(RTTVAR)); 1291 printf("%8ld%c ", rtm->rtm_rmx.rmx_hopcount, lock(HOPCOUNT)); 1292 printf("%8ld%c ", rtm->rtm_rmx.rmx_mtu, lock(MTU)); 1293 if (rtm->rtm_rmx.rmx_expire) 1294 rtm->rtm_rmx.rmx_expire -= time(0); 1295 printf("%8ld%c\n", rtm->rtm_rmx.rmx_expire, lock(EXPIRE)); 1296#undef lock 1297#undef msec 1298#define RTA_IGN (RTA_DST|RTA_GATEWAY|RTA_NETMASK|RTA_IFP|RTA_IFA|RTA_BRD) 1299 if (verbose) 1300 pmsg_common(rtm); 1301 else if (rtm->rtm_addrs &~ RTA_IGN) { 1302 (void) printf("sockaddrs: "); 1303 bprintf(stdout, rtm->rtm_addrs, addrnames); 1304 putchar('\n'); 1305 } 1306#undef RTA_IGN 1307} 1308 1309void 1310pmsg_common(rtm) 1311 register struct rt_msghdr *rtm; 1312{ 1313 (void) printf("\nlocks: "); 1314 bprintf(stdout, rtm->rtm_rmx.rmx_locks, metricnames); 1315 (void) printf(" inits: "); 1316 bprintf(stdout, rtm->rtm_inits, metricnames); 1317 pmsg_addrs(((char *)(rtm + 1)), rtm->rtm_addrs); 1318} 1319 1320void 1321pmsg_addrs(cp, addrs) 1322 char *cp; 1323 int addrs; 1324{ 1325 register struct sockaddr *sa; 1326 int i; 1327 1328 if (addrs == 0) 1329 return; 1330 (void) printf("\nsockaddrs: "); 1331 bprintf(stdout, addrs, addrnames); 1332 (void) putchar('\n'); 1333 for (i = 1; i; i <<= 1) 1334 if (i & addrs) { 1335 sa = (struct sockaddr *)cp; 1336 (void) printf(" %s", routename(sa)); 1337 ADVANCE(cp, sa); 1338 } 1339 (void) putchar('\n'); 1340 (void) fflush(stdout); 1341} 1342 1343void 1344bprintf(fp, b, s) 1345 register FILE *fp; 1346 register int b; 1347 register u_char *s; 1348{ 1349 register int i; 1350 int gotsome = 0; 1351 1352 if (b == 0) 1353 return; 1354 while ((i = *s++) != 0) { 1355 if (b & (1 << (i-1))) { 1356 if (gotsome == 0) 1357 i = '<'; 1358 else 1359 i = ','; 1360 (void) putc(i, fp); 1361 gotsome = 1; 1362 for (; (i = *s) > 32; s++) 1363 (void) putc(i, fp); 1364 } else 1365 while (*s > 32) 1366 s++; 1367 } 1368 if (gotsome) 1369 (void) putc('>', fp); 1370} 1371 1372int 1373keyword(cp) 1374 char *cp; 1375{ 1376 register struct keytab *kt = keywords; 1377 1378 while (kt->kt_cp && strcmp(kt->kt_cp, cp)) 1379 kt++; 1380 return kt->kt_i; 1381} 1382 1383void 1384sodump(su, which) 1385 register sup su; 1386 char *which; 1387{ 1388 switch (su->sa.sa_family) { 1389 case AF_LINK: 1390 (void) printf("%s: link %s; ", 1391 which, link_ntoa(&su->sdl)); 1392 break; 1393 case AF_INET: 1394 (void) printf("%s: inet %s; ", 1395 which, inet_ntoa(su->sin.sin_addr)); 1396 break; 1397 case AF_APPLETALK: 1398 (void) printf("%s: atalk %s; ", 1399 which, atalk_ntoa(su->sat.sat_addr)); 1400 break; 1401#ifdef NS 1402 case AF_NS: 1403 (void) printf("%s: xns %s; ", 1404 which, ns_ntoa(su->sns.sns_addr)); 1405 break; 1406#endif 1407 } 1408 (void) fflush(stdout); 1409} 1410 1411/* States*/ 1412#define VIRGIN 0 1413#define GOTONE 1 1414#define GOTTWO 2 1415/* Inputs */ 1416#define DIGIT (4*0) 1417#define END (4*1) 1418#define DELIM (4*2) 1419 1420void 1421sockaddr(addr, sa) 1422 register char *addr; 1423 register struct sockaddr *sa; 1424{ 1425 register char *cp = (char *)sa; 1426 int size = sa->sa_len; 1427 char *cplim = cp + size; 1428 register int byte = 0, state = VIRGIN, new = 0 /* foil gcc */; 1429 1430 bzero(cp, size); 1431 cp++; 1432 do { 1433 if ((*addr >= '0') && (*addr <= '9')) { 1434 new = *addr - '0'; 1435 } else if ((*addr >= 'a') && (*addr <= 'f')) { 1436 new = *addr - 'a' + 10; 1437 } else if ((*addr >= 'A') && (*addr <= 'F')) { 1438 new = *addr - 'A' + 10; 1439 } else if (*addr == 0) 1440 state |= END; 1441 else 1442 state |= DELIM; 1443 addr++; 1444 switch (state /* | INPUT */) { 1445 case GOTTWO | DIGIT: 1446 *cp++ = byte; /*FALLTHROUGH*/ 1447 case VIRGIN | DIGIT: 1448 state = GOTONE; byte = new; continue; 1449 case GOTONE | DIGIT: 1450 state = GOTTWO; byte = new + (byte << 4); continue; 1451 default: /* | DELIM */ 1452 state = VIRGIN; *cp++ = byte; byte = 0; continue; 1453 case GOTONE | END: 1454 case GOTTWO | END: 1455 *cp++ = byte; /* FALLTHROUGH */ 1456 case VIRGIN | END: 1457 break; 1458 } 1459 break; 1460 } while (cp < cplim); 1461 sa->sa_len = cp - (char *)sa; 1462} 1463 1464int 1465atalk_aton(const char *text, struct at_addr *addr) 1466{ 1467 u_int net, node; 1468 1469 if (sscanf(text, "%u.%u", &net, &node) != 2 1470 || net > 0xffff || node > 0xff) 1471 return(0); 1472 addr->s_net = htons(net); 1473 addr->s_node = node; 1474 return(1); 1475} 1476 1477char * 1478atalk_ntoa(struct at_addr at) 1479{ 1480 static char buf[20]; 1481 1482 (void) snprintf(buf, sizeof(buf), "%u.%u", ntohs(at.s_net), at.s_node); 1483 return(buf); 1484} 1485