Annotation of src/usr.bin/netstat/show.c, Revision 1.1
1.1 ! claudio 1: /* $OpenBSD: show.c,v 1.26 2003/08/26 08:33:12 itojun Exp $ */
! 2: /* $NetBSD: show.c,v 1.1 1996/11/15 18:01:41 gwr Exp $ */
! 3:
! 4: /*
! 5: * Copyright (c) 1983, 1988, 1993
! 6: * The Regents of the University of California. All rights reserved.
! 7: *
! 8: * Redistribution and use in source and binary forms, with or without
! 9: * modification, are permitted provided that the following conditions
! 10: * are met:
! 11: * 1. Redistributions of source code must retain the above copyright
! 12: * notice, this list of conditions and the following disclaimer.
! 13: * 2. Redistributions in binary form must reproduce the above copyright
! 14: * notice, this list of conditions and the following disclaimer in the
! 15: * documentation and/or other materials provided with the distribution.
! 16: * 3. Neither the name of the University nor the names of its contributors
! 17: * may be used to endorse or promote products derived from this software
! 18: * without specific prior written permission.
! 19: *
! 20: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
! 21: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
! 22: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
! 23: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
! 24: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
! 25: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
! 26: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
! 27: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
! 28: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
! 29: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
! 30: * SUCH DAMAGE.
! 31: */
! 32:
! 33: #include <sys/param.h>
! 34: #include <sys/protosw.h>
! 35: #include <sys/socket.h>
! 36: #include <sys/mbuf.h>
! 37: #include <sys/sysctl.h>
! 38:
! 39: #include <net/if.h>
! 40: #include <net/if_dl.h>
! 41: #include <net/if_types.h>
! 42: #include <net/pfkeyv2.h>
! 43: #include <net/route.h>
! 44: #include <netinet/in.h>
! 45: #include <netipx/ipx.h>
! 46: #include <netinet/if_ether.h>
! 47: #include <netinet/ip_ipsp.h>
! 48: #include <arpa/inet.h>
! 49:
! 50: #include <err.h>
! 51: #include <errno.h>
! 52: #include <netdb.h>
! 53: #include <stdio.h>
! 54: #include <stddef.h>
! 55: #include <stdlib.h>
! 56: #include <string.h>
! 57: #include <unistd.h>
! 58:
! 59: #include "netstat.h"
! 60:
! 61: char *any_ntoa(const struct sockaddr *);
! 62: char *link_print(struct sockaddr *);
! 63:
! 64: #define ROUNDUP(a) \
! 65: ((a) > 0 ? (1 + (((a) - 1) | (sizeof(long) - 1))) : sizeof(long))
! 66: #define ADVANCE(x, n) (x += ROUNDUP((n)->sa_len))
! 67:
! 68: #define PFKEYV2_CHUNK sizeof(u_int64_t)
! 69:
! 70: /*
! 71: * Definitions for showing gateway flags.
! 72: */
! 73: struct bits {
! 74: int b_mask;
! 75: char b_val;
! 76: };
! 77: static const struct bits bits[] = {
! 78: { RTF_UP, 'U' },
! 79: { RTF_GATEWAY, 'G' },
! 80: { RTF_HOST, 'H' },
! 81: { RTF_REJECT, 'R' },
! 82: { RTF_BLACKHOLE, 'B' },
! 83: { RTF_DYNAMIC, 'D' },
! 84: { RTF_MODIFIED, 'M' },
! 85: { RTF_DONE, 'd' }, /* Completed -- for routing messages only */
! 86: { RTF_MASK, 'm' }, /* Mask Present -- for routing messages only */
! 87: { RTF_CLONING, 'C' },
! 88: { RTF_XRESOLVE, 'X' },
! 89: { RTF_LLINFO, 'L' },
! 90: { RTF_STATIC, 'S' },
! 91: { RTF_PROTO1, '1' },
! 92: { RTF_PROTO2, '2' },
! 93: { RTF_PROTO3, '3' },
! 94: { RTF_CLONED, 'c' },
! 95: { RTF_JUMBO, 'J' },
! 96: { 0 }
! 97: };
! 98:
! 99: void pr_rthdr(int, int);
! 100: void p_rtentry(struct rt_msghdr *);
! 101: void p_pfkentry(struct sadb_msg *);
! 102: void pr_family(int);
! 103: void p_encap(struct sockaddr *, struct sockaddr *, int);
! 104: void p_protocol(struct sadb_protocol *, struct sockaddr *, struct
! 105: sadb_protocol *, int);
! 106: void p_sockaddr(struct sockaddr *, struct sockaddr *, int, int);
! 107: void p_flags(int, char *);
! 108: char *routename4(in_addr_t);
! 109: char *routename6(struct sockaddr_in6 *);
! 110: void index_pfk(struct sadb_msg *, void **);
! 111:
! 112: /*
! 113: * Print routing tables.
! 114: */
! 115: void
! 116: p_rttables(int af)
! 117: {
! 118: struct rt_msghdr *rtm;
! 119: struct sadb_msg *msg;
! 120: char *buf = NULL, *next, *lim = NULL;
! 121: size_t needed;
! 122: int mib[6];
! 123: struct sockaddr *sa;
! 124:
! 125: mib[0] = CTL_NET;
! 126: mib[1] = PF_ROUTE;
! 127: mib[2] = 0;
! 128: mib[3] = af;
! 129: mib[4] = NET_RT_DUMP;
! 130: mib[5] = 0;
! 131: if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0)
! 132: err(1, "route-sysctl-estimate");
! 133: if (needed > 0) {
! 134: if ((buf = malloc(needed)) == 0)
! 135: err(1, NULL);
! 136: if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0)
! 137: err(1, "sysctl of routing table");
! 138: lim = buf + needed;
! 139: }
! 140:
! 141: printf("Routing tables\n");
! 142:
! 143: if (buf) {
! 144: for (next = buf; next < lim; next += rtm->rtm_msglen) {
! 145: rtm = (struct rt_msghdr *)next;
! 146: sa = (struct sockaddr *)(rtm + 1);
! 147: if (af != AF_UNSPEC && sa->sa_family != af)
! 148: continue;
! 149: p_rtentry(rtm);
! 150: }
! 151: free(buf);
! 152: buf = NULL;
! 153: }
! 154:
! 155: if (af != 0 && af != PF_KEY)
! 156: return;
! 157:
! 158: mib[0] = CTL_NET;
! 159: mib[1] = PF_KEY;
! 160: mib[2] = PF_KEY_V2;
! 161: mib[3] = NET_KEY_SPD_DUMP;
! 162: mib[4] = mib[5] = 0;
! 163:
! 164: if (sysctl(mib, 4, NULL, &needed, NULL, 0) == -1) {
! 165: if (errno == ENOPROTOOPT)
! 166: return;
! 167: err(1, "spd-sysctl-estimate");
! 168: }
! 169: if (needed > 0) {
! 170: if ((buf = malloc(needed)) == 0)
! 171: err(1, NULL);
! 172: if (sysctl(mib, 4, buf, &needed, NULL, 0) == -1)
! 173: err(1,"sysctl of spd");
! 174: lim = buf + needed;
! 175: }
! 176:
! 177: if (buf) {
! 178: printf("\nEncap:\n");
! 179:
! 180: for (next = buf; next < lim; next += msg->sadb_msg_len *
! 181: PFKEYV2_CHUNK) {
! 182: msg = (struct sadb_msg *)next;
! 183: if (msg->sadb_msg_len == 0)
! 184: break;
! 185: p_pfkentry(msg);
! 186: }
! 187: free(buf);
! 188: buf = NULL;
! 189: }
! 190: }
! 191:
! 192: /*
! 193: * column widths; each followed by one space
! 194: * width of destination/gateway column
! 195: * strlen("fe80::aaaa:bbbb:cccc:dddd@gif0") == 30, strlen("/128") == 4
! 196: */
! 197: #define WID_DST(af) ((af) == AF_INET6 ? (nflag ? 34 : 18) : 18)
! 198: #define WID_GW(af) ((af) == AF_INET6 ? (nflag ? 30 : 18) : 18)
! 199:
! 200: /*
! 201: * Print header for routing table columns.
! 202: */
! 203: void
! 204: pr_rthdr(int af, int Aflag)
! 205: {
! 206: if (Aflag)
! 207: printf("%-*.*s ", PLEN, PLEN, "Address");
! 208: if (af != PF_KEY)
! 209: printf("%-*.*s %-*.*s %-6.6s %6.6s %8.8s %6.6s %s\n",
! 210: WID_DST(af), WID_DST(af), "Destination",
! 211: WID_GW(af), WID_GW(af), "Gateway",
! 212: "Flags", "Refs", "Use", "Mtu", "Interface");
! 213: else
! 214: printf("%-18s %-5s %-18s %-5s %-5s %-22s\n",
! 215: "Source", "Port", "Destination",
! 216: "Port", "Proto", "SA(Address/Proto/Type/Direction)");
! 217: }
! 218:
! 219: static void
! 220: get_rtaddrs(int addrs, struct sockaddr *sa, struct sockaddr **rti_info)
! 221: {
! 222: int i;
! 223:
! 224: for (i = 0; i < RTAX_MAX; i++) {
! 225: if (addrs & (1 << i)) {
! 226: rti_info[i] = sa;
! 227: sa = (struct sockaddr *)((char *)(sa) +
! 228: ROUNDUP(sa->sa_len));
! 229: } else
! 230: rti_info[i] = NULL;
! 231: }
! 232: }
! 233:
! 234: /*
! 235: * Print a routing table entry.
! 236: */
! 237: void
! 238: p_rtentry(struct rt_msghdr *rtm)
! 239: {
! 240: static int old_af = -1;
! 241: struct sockaddr *sa = (struct sockaddr *)(rtm + 1);
! 242: struct sockaddr *mask, *rti_info[RTAX_MAX];
! 243: char ifbuf[IF_NAMESIZE];
! 244:
! 245:
! 246: if (sa->sa_family == AF_KEY)
! 247: return;
! 248:
! 249: if (old_af != sa->sa_family) {
! 250: old_af = sa->sa_family;
! 251: pr_family(sa->sa_family);
! 252: pr_rthdr(sa->sa_family, 0);
! 253: }
! 254: get_rtaddrs(rtm->rtm_addrs, sa, rti_info);
! 255:
! 256: mask = rti_info[RTAX_NETMASK];
! 257: if ((sa = rti_info[RTAX_DST]) == NULL)
! 258: return;
! 259:
! 260: p_sockaddr(sa, mask, rtm->rtm_flags, WID_DST(sa->sa_family));
! 261: p_sockaddr(rti_info[RTAX_GATEWAY], NULL, RTF_HOST,
! 262: WID_GW(sa->sa_family));
! 263: p_flags(rtm->rtm_flags, "%-6.6s ");
! 264: printf("%6d %8ld ", (int)rtm->rtm_rmx.rmx_refcnt,
! 265: rtm->rtm_rmx.rmx_pksent);
! 266: if (rtm->rtm_rmx.rmx_mtu)
! 267: printf("%6ld ", rtm->rtm_rmx.rmx_mtu);
! 268: else
! 269: printf("%6s ", "-");
! 270: putchar((rtm->rtm_rmx.rmx_locks & RTV_MTU) ? 'L' : ' ');
! 271: printf(" %.16s", if_indextoname(rtm->rtm_index, ifbuf));
! 272: putchar('\n');
! 273: }
! 274:
! 275: /*
! 276: * Print a pfkey/encap entry.
! 277: */
! 278: void
! 279: p_pfkentry(struct sadb_msg *msg)
! 280: {
! 281: static int old = 0;
! 282: struct sadb_ext *ext;
! 283: struct sadb_address *saddr;
! 284: struct sadb_protocol *sap, *saft;
! 285: struct sockaddr *sa, *mask;
! 286: void *headers[SADB_EXT_MAX + 1];
! 287:
! 288: if (!old) {
! 289: pr_rthdr(PF_KEY, 0);
! 290: old++;
! 291: }
! 292:
! 293: bzero(headers, sizeof(headers));
! 294: index_pfk(msg, headers);
! 295:
! 296: /* These are always set */
! 297: saddr = headers[SADB_X_EXT_SRC_FLOW];
! 298: sa = (struct sockaddr *)(saddr + 1);
! 299: saddr = headers[SADB_X_EXT_SRC_MASK];
! 300: mask = (struct sockaddr *)(saddr + 1);
! 301: p_encap(sa, mask, WID_DST(sa->sa_family));
! 302:
! 303: /* These are always set, too. */
! 304: saddr = headers[SADB_X_EXT_DST_FLOW];
! 305: sa = (struct sockaddr *)(saddr + 1);
! 306: saddr = headers[SADB_X_EXT_DST_MASK];
! 307: mask = (struct sockaddr *)(saddr + 1);
! 308: p_encap(sa, mask, WID_DST(sa->sa_family));
! 309:
! 310: /* Bypass and deny flows do not set SADB_EXT_ADDRESS_DST! */
! 311: sap = headers[SADB_X_EXT_PROTOCOL];
! 312: saft = headers[SADB_X_EXT_FLOW_TYPE];
! 313: saddr = headers[SADB_EXT_ADDRESS_DST];
! 314: if (saddr)
! 315: sa = (struct sockaddr *)(saddr + 1);
! 316: else
! 317: sa = NULL;
! 318: p_protocol(sap, sa, saft, msg->sadb_msg_satype);
! 319:
! 320: printf("\n");
! 321: }
! 322:
! 323: /*
! 324: * Print address family header before a section of the routing table.
! 325: */
! 326: void
! 327: pr_family(int af)
! 328: {
! 329: char *afname;
! 330:
! 331: switch (af) {
! 332: case AF_INET:
! 333: afname = "Internet";
! 334: break;
! 335: case AF_INET6:
! 336: afname = "Internet6";
! 337: break;
! 338: case AF_IPX:
! 339: afname = "IPX";
! 340: break;
! 341: case PF_KEY:
! 342: afname = "Encap";
! 343: break;
! 344: case AF_APPLETALK:
! 345: afname = "AppleTalk";
! 346: break;
! 347: default:
! 348: afname = NULL;
! 349: break;
! 350: }
! 351: if (afname)
! 352: printf("\n%s:\n", afname);
! 353: else
! 354: printf("\nProtocol Family %d:\n", af);
! 355: }
! 356:
! 357: void
! 358: p_addr(struct sockaddr *sa, struct sockaddr *mask, int flags)
! 359: {
! 360: p_sockaddr(sa, mask, flags, WID_DST(sa->sa_family));
! 361: }
! 362:
! 363: void
! 364: p_gwaddr(struct sockaddr *sa, int af)
! 365: {
! 366: p_sockaddr(sa, 0, RTF_HOST, WID_GW(af));
! 367: }
! 368:
! 369: void
! 370: p_encap(struct sockaddr *sa, struct sockaddr *mask, int width)
! 371: {
! 372: char *cp;
! 373: unsigned short port;
! 374:
! 375: switch (sa->sa_family) {
! 376: case AF_INET6: {
! 377: break;
! 378: }
! 379: default:
! 380: if (mask)
! 381: cp = netname(sa, mask);
! 382: else
! 383: cp = routename(sa);
! 384: port = ntohs(((struct sockaddr_in *)sa)->sin_port);
! 385: break;
! 386: }
! 387: if (width < 0)
! 388: printf("%s", cp);
! 389: else {
! 390: if (nflag)
! 391: printf("%-*s %-5u ", width, cp, port);
! 392: else
! 393: printf("%-*.*s %-5u ", width, width, cp, port);
! 394: }
! 395: }
! 396:
! 397: void
! 398: p_protocol(struct sadb_protocol *sap, struct sockaddr *sa, struct sadb_protocol
! 399: *saft, int proto)
! 400: {
! 401: printf("%-6u", sap->sadb_protocol_proto);
! 402: if (sa)
! 403: p_sockaddr(sa, NULL, 0, -1);
! 404: else
! 405: printf("none");
! 406:
! 407: switch (proto) {
! 408: case SADB_SATYPE_ESP:
! 409: printf("/esp");
! 410: break;
! 411: case SADB_SATYPE_AH:
! 412: printf("/ah");
! 413: break;
! 414: case SADB_X_SATYPE_IPCOMP:
! 415: printf("/ipcomp");
! 416: break;
! 417: case SADB_X_SATYPE_IPIP:
! 418: printf("/ipip");
! 419: break;
! 420: default:
! 421: printf("/<unknown>");
! 422: }
! 423:
! 424: switch(saft->sadb_protocol_proto) {
! 425: case SADB_X_FLOW_TYPE_USE:
! 426: printf("/use");
! 427: break;
! 428: case SADB_X_FLOW_TYPE_REQUIRE:
! 429: printf("/require");
! 430: break;
! 431: case SADB_X_FLOW_TYPE_ACQUIRE:
! 432: printf("/acquire");
! 433: break;
! 434: case SADB_X_FLOW_TYPE_DENY:
! 435: printf("/deny");
! 436: break;
! 437: case SADB_X_FLOW_TYPE_BYPASS:
! 438: printf("/bypass");
! 439: break;
! 440: case SADB_X_FLOW_TYPE_DONTACQ:
! 441: printf("/dontacq");
! 442: break;
! 443: default:
! 444: printf("/<unknown type>");
! 445: }
! 446:
! 447: switch(saft->sadb_protocol_direction) {
! 448: case IPSP_DIRECTION_IN:
! 449: printf("/in");
! 450: break;
! 451: case IPSP_DIRECTION_OUT:
! 452: printf("/out");
! 453: break;
! 454: default:
! 455: printf("/<unknown>");
! 456: }
! 457: }
! 458:
! 459: void
! 460: p_sockaddr(struct sockaddr *sa, struct sockaddr *mask, int flags, int width)
! 461: {
! 462: char *cp;
! 463:
! 464: switch (sa->sa_family) {
! 465: case AF_INET6:
! 466: {
! 467: struct sockaddr_in6 *sa6 = (struct sockaddr_in6 *)sa;
! 468: struct in6_addr *in6 = &sa6->sin6_addr;
! 469:
! 470: /*
! 471: * XXX: This is a special workaround for KAME kernels.
! 472: * sin6_scope_id field of SA should be set in the future.
! 473: */
! 474: if (IN6_IS_ADDR_LINKLOCAL(in6) ||
! 475: IN6_IS_ADDR_MC_LINKLOCAL(in6)) {
! 476: /* XXX: override is ok? */
! 477: sa6->sin6_scope_id = (u_int32_t)ntohs(*(u_short *)
! 478: &in6->s6_addr[2]);
! 479: *(u_short *)&in6->s6_addr[2] = 0;
! 480: }
! 481: if (flags & RTF_HOST)
! 482: cp = routename((struct sockaddr *)sa6);
! 483: else
! 484: cp = netname((struct sockaddr *)sa6, mask);
! 485: break;
! 486: }
! 487: default:
! 488: if ((flags & RTF_HOST) || mask == NULL)
! 489: cp = routename(sa);
! 490: else
! 491: cp = netname(sa, mask);
! 492: break;
! 493: }
! 494: if (width < 0)
! 495: printf("%s", cp);
! 496: else {
! 497: if (nflag)
! 498: printf("%-*s ", width, cp);
! 499: else
! 500: printf("%-*.*s ", width, width, cp);
! 501: }
! 502: }
! 503:
! 504: void
! 505: p_flags(int f, char *format)
! 506: {
! 507: char name[33], *flags;
! 508: const struct bits *p = bits;
! 509:
! 510: for (flags = name; p->b_mask && flags < &name[sizeof(name) - 2]; p++)
! 511: if (p->b_mask & f)
! 512: *flags++ = p->b_val;
! 513: *flags = '\0';
! 514: printf(format, name);
! 515: }
! 516:
! 517: static char line[MAXHOSTNAMELEN];
! 518: static char domain[MAXHOSTNAMELEN];
! 519:
! 520: char *
! 521: routename(struct sockaddr *sa)
! 522: {
! 523: char *cp = NULL;
! 524: static int first = 1;
! 525:
! 526: if (first) {
! 527: first = 0;
! 528: if (gethostname(domain, sizeof(domain)) == 0 &&
! 529: (cp = strchr(domain, '.')))
! 530: (void)strlcpy(domain, cp + 1, sizeof(domain));
! 531: else
! 532: domain[0] = '\0';
! 533: cp = NULL;
! 534: }
! 535:
! 536: if (sa->sa_len == 0) {
! 537: (void)strlcpy(line, "default", sizeof(line));
! 538: return (line);
! 539: }
! 540:
! 541: switch (sa->sa_family) {
! 542: case AF_INET:
! 543: return
! 544: (routename4(((struct sockaddr_in *)sa)->sin_addr.s_addr));
! 545:
! 546: case AF_INET6:
! 547: {
! 548: struct sockaddr_in6 sin6;
! 549:
! 550: memset(&sin6, 0, sizeof(sin6));
! 551: memcpy(&sin6, sa, sa->sa_len);
! 552: sin6.sin6_len = sizeof(struct sockaddr_in6);
! 553: sin6.sin6_family = AF_INET6;
! 554: if (sa->sa_len == sizeof(struct sockaddr_in6) &&
! 555: (IN6_IS_ADDR_LINKLOCAL(&sin6.sin6_addr) ||
! 556: IN6_IS_ADDR_MC_LINKLOCAL(&sin6.sin6_addr)) &&
! 557: sin6.sin6_scope_id == 0) {
! 558: sin6.sin6_scope_id =
! 559: ntohs(*(u_int16_t *)&sin6.sin6_addr.s6_addr[2]);
! 560: sin6.sin6_addr.s6_addr[2] = 0;
! 561: sin6.sin6_addr.s6_addr[3] = 0;
! 562: }
! 563: return (routename6(&sin6));
! 564: }
! 565:
! 566: case AF_IPX:
! 567: return (ipx_print(sa));
! 568:
! 569: case AF_LINK:
! 570: return (link_print(sa));
! 571:
! 572: case AF_UNSPEC:
! 573: if (sa->sa_len == sizeof(struct sockaddr_rtlabel)) {
! 574: static char name[RTLABEL_LEN];
! 575: struct sockaddr_rtlabel *sr;
! 576:
! 577: sr = (struct sockaddr_rtlabel *)sa;
! 578: strlcpy(name, sr->sr_label, sizeof(name));
! 579: return (name);
! 580: }
! 581: /* FALLTHROUGH */
! 582: default:
! 583: (void)snprintf(line, sizeof(line), "(%d) %s",
! 584: sa->sa_family, any_ntoa(sa));
! 585: break;
! 586: }
! 587: return (line);
! 588: }
! 589:
! 590: char *
! 591: routename4(in_addr_t in)
! 592: {
! 593: char *cp = NULL;
! 594: struct in_addr ina;
! 595: struct hostent *hp;
! 596:
! 597: if (in == INADDR_ANY)
! 598: cp = "default";
! 599: if (!cp && !nflag) {
! 600: if ((hp = gethostbyaddr((char *)&in,
! 601: sizeof(in), AF_INET)) != NULL) {
! 602: if ((cp = strchr(hp->h_name, '.')) &&
! 603: !strcmp(cp + 1, domain))
! 604: *cp = '\0';
! 605: cp = hp->h_name;
! 606: }
! 607: }
! 608: ina.s_addr = in;
! 609: strlcpy(line, cp ? cp : inet_ntoa(ina), sizeof(line));
! 610:
! 611: return (line);
! 612: }
! 613:
! 614: char *
! 615: routename6(struct sockaddr_in6 *sin6)
! 616: {
! 617: int niflags = 0;
! 618:
! 619: if (nflag)
! 620: niflags |= NI_NUMERICHOST;
! 621: else
! 622: niflags |= NI_NOFQDN;
! 623:
! 624: if (getnameinfo((struct sockaddr *)sin6, sin6->sin6_len,
! 625: line, sizeof(line), NULL, 0, niflags) != 0)
! 626: strncpy(line, "invalid", sizeof(line));
! 627:
! 628: return (line);
! 629: }
! 630:
! 631: /*
! 632: * Return the name of the network whose address is given.
! 633: * The address is assumed to be that of a net or subnet, not a host.
! 634: */
! 635: char *
! 636: netname4(in_addr_t in, in_addr_t mask)
! 637: {
! 638: char *cp = NULL;
! 639: struct netent *np = NULL;
! 640: int mbits;
! 641:
! 642: in = ntohl(in);
! 643: mask = ntohl(mask);
! 644: if (!nflag && in != INADDR_ANY) {
! 645: if ((np = getnetbyaddr(in, AF_INET)) != NULL)
! 646: cp = np->n_name;
! 647: }
! 648: if (in == INADDR_ANY)
! 649: cp = "default";
! 650: mbits = mask ? 33 - ffs(mask) : 0;
! 651: if (cp)
! 652: strlcpy(line, cp, sizeof(line));
! 653: #define C(x) ((x) & 0xff)
! 654: else if (mbits < 9)
! 655: snprintf(line, sizeof(line), "%u/%d", C(in >> 24), mbits);
! 656: else if (mbits < 17)
! 657: snprintf(line, sizeof(line), "%u.%u/%d",
! 658: C(in >> 24) , C(in >> 16), mbits);
! 659: else if (mbits < 25)
! 660: snprintf(line, sizeof(line), "%u.%u.%u/%d",
! 661: C(in >> 24), C(in >> 16), C(in >> 8), mbits);
! 662: else
! 663: snprintf(line, sizeof(line), "%u.%u.%u.%u/%d", C(in >> 24),
! 664: C(in >> 16), C(in >> 8), C(in), mbits);
! 665: #undef C
! 666: return (line);
! 667: }
! 668:
! 669: char *
! 670: netname6(struct sockaddr_in6 *sa6, struct sockaddr_in6 *mask)
! 671: {
! 672: struct sockaddr_in6 sin6;
! 673: u_char *p;
! 674: int masklen, final = 0, illegal = 0;
! 675: int i, lim, flag, error;
! 676: char hbuf[NI_MAXHOST];
! 677:
! 678: sin6 = *sa6;
! 679:
! 680: flag = 0;
! 681: masklen = 0;
! 682: if (mask) {
! 683: lim = mask->sin6_len - offsetof(struct sockaddr_in6, sin6_addr);
! 684: lim = lim < sizeof(struct in6_addr) ?
! 685: lim : sizeof(struct in6_addr);
! 686: for (p = (u_char *)&mask->sin6_addr, i = 0; i < lim; p++) {
! 687: if (final && *p) {
! 688: illegal++;
! 689: sin6.sin6_addr.s6_addr[i++] = 0x00;
! 690: continue;
! 691: }
! 692:
! 693: switch (*p & 0xff) {
! 694: case 0xff:
! 695: masklen += 8;
! 696: break;
! 697: case 0xfe:
! 698: masklen += 7;
! 699: final++;
! 700: break;
! 701: case 0xfc:
! 702: masklen += 6;
! 703: final++;
! 704: break;
! 705: case 0xf8:
! 706: masklen += 5;
! 707: final++;
! 708: break;
! 709: case 0xf0:
! 710: masklen += 4;
! 711: final++;
! 712: break;
! 713: case 0xe0:
! 714: masklen += 3;
! 715: final++;
! 716: break;
! 717: case 0xc0:
! 718: masklen += 2;
! 719: final++;
! 720: break;
! 721: case 0x80:
! 722: masklen += 1;
! 723: final++;
! 724: break;
! 725: case 0x00:
! 726: final++;
! 727: break;
! 728: default:
! 729: final++;
! 730: illegal++;
! 731: break;
! 732: }
! 733:
! 734: if (!illegal)
! 735: sin6.sin6_addr.s6_addr[i++] &= *p;
! 736: else
! 737: sin6.sin6_addr.s6_addr[i++] = 0x00;
! 738: }
! 739: while (i < sizeof(struct in6_addr))
! 740: sin6.sin6_addr.s6_addr[i++] = 0x00;
! 741: } else
! 742: masklen = 128;
! 743:
! 744: if (masklen == 0 && IN6_IS_ADDR_UNSPECIFIED(&sin6.sin6_addr))
! 745: return ("default");
! 746:
! 747: if (illegal)
! 748: warnx("illegal prefixlen");
! 749:
! 750: if (nflag)
! 751: flag |= NI_NUMERICHOST;
! 752: error = getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len,
! 753: hbuf, sizeof(hbuf), NULL, 0, flag);
! 754: if (error)
! 755: snprintf(hbuf, sizeof(hbuf), "invalid");
! 756:
! 757: snprintf(line, sizeof(line), "%s/%d", hbuf, masklen);
! 758: return (line);
! 759: }
! 760:
! 761: /*
! 762: * Return the name of the network whose address is given.
! 763: * The address is assumed to be that of a net or subnet, not a host.
! 764: */
! 765: char *
! 766: netname(struct sockaddr *sa, struct sockaddr *mask)
! 767: {
! 768: switch (sa->sa_family) {
! 769:
! 770: case AF_INET:
! 771: return netname4(((struct sockaddr_in *)sa)->sin_addr.s_addr,
! 772: ((struct sockaddr_in *)mask)->sin_addr.s_addr);
! 773: case AF_INET6:
! 774: return netname6((struct sockaddr_in6 *)sa,
! 775: (struct sockaddr_in6 *)mask);
! 776: case AF_IPX:
! 777: return (ipx_print(sa));
! 778: case AF_LINK:
! 779: return (link_print(sa));
! 780: default:
! 781: snprintf(line, sizeof(line), "af %d: %s",
! 782: sa->sa_family, any_ntoa(sa));
! 783: break;
! 784: }
! 785: return (line);
! 786: }
! 787:
! 788: static const char hexlist[] = "0123456789abcdef";
! 789:
! 790: char *
! 791: any_ntoa(const struct sockaddr *sa)
! 792: {
! 793: static char obuf[240];
! 794: const char *in = sa->sa_data;
! 795: char *out = obuf;
! 796: int len = sa->sa_len - offsetof(struct sockaddr, sa_data);
! 797:
! 798: *out++ = 'Q';
! 799: do {
! 800: *out++ = hexlist[(*in >> 4) & 15];
! 801: *out++ = hexlist[(*in++) & 15];
! 802: *out++ = '.';
! 803: } while (--len > 0 && (out + 3) < &obuf[sizeof(obuf) - 1]);
! 804: out[-1] = '\0';
! 805: return (obuf);
! 806: }
! 807:
! 808: short ipx_nullh[] = {0,0,0};
! 809: short ipx_bh[] = {-1,-1,-1};
! 810:
! 811: char *
! 812: ipx_print(struct sockaddr *sa)
! 813: {
! 814: struct sockaddr_ipx *sipx = (struct sockaddr_ipx *)sa;
! 815: struct ipx_addr work;
! 816: union {
! 817: union ipx_net net_e;
! 818: u_int32_t long_e;
! 819: } net;
! 820: u_short port;
! 821: static char mybuf[50+MAXHOSTNAMELEN], cport[10], chost[25];
! 822: char *host = "";
! 823: char *p;
! 824: u_char *q;
! 825:
! 826: work = sipx->sipx_addr;
! 827: port = ntohs(work.ipx_port);
! 828: work.ipx_port = 0;
! 829: net.net_e = work.ipx_net;
! 830: if (ipx_nullhost(work) && net.long_e == 0) {
! 831: if (!port)
! 832: return ("*.*");
! 833: (void)snprintf(mybuf, sizeof(mybuf), "*.0x%XH", port);
! 834: return (mybuf);
! 835: }
! 836:
! 837: if (memcmp(ipx_bh, work.ipx_host.c_host, 6) == 0)
! 838: host = "any";
! 839: else if (memcmp(ipx_nullh, work.ipx_host.c_host, 6) == 0)
! 840: host = "*";
! 841: else {
! 842: q = work.ipx_host.c_host;
! 843: (void)snprintf(chost, sizeof(chost), "%02X%02X%02X%02X%02X%02XH",
! 844: q[0], q[1], q[2], q[3], q[4], q[5]);
! 845: for (p = chost; *p == '0' && p < chost + 12; p++)
! 846: /* void */;
! 847: host = p;
! 848: }
! 849: if (port)
! 850: (void)snprintf(cport, sizeof(cport), ".%XH", htons(port));
! 851: else
! 852: *cport = '\0';
! 853:
! 854: (void)snprintf(mybuf, sizeof(mybuf), "%XH.%s%s",
! 855: ntohl(net.long_e), host, cport);
! 856: return (mybuf);
! 857: }
! 858:
! 859: char *
! 860: link_print(struct sockaddr *sa)
! 861: {
! 862: struct sockaddr_dl *sdl = (struct sockaddr_dl *)sa;
! 863: u_char *lla = (u_char *)sdl->sdl_data + sdl->sdl_nlen;
! 864:
! 865: if (sdl->sdl_nlen == 0 && sdl->sdl_alen == 0 &&
! 866: sdl->sdl_slen == 0) {
! 867: (void)snprintf(line, sizeof(line), "link#%d", sdl->sdl_index);
! 868: return (line);
! 869: }
! 870: switch (sdl->sdl_type) {
! 871: case IFT_ETHER:
! 872: case IFT_CARP:
! 873: return (ether_ntoa((struct ether_addr *)lla));
! 874: default:
! 875: return (link_ntoa(sdl));
! 876: }
! 877: }
! 878:
! 879: void
! 880: index_pfk(struct sadb_msg *msg, void **headers)
! 881: {
! 882: struct sadb_ext *ext;
! 883:
! 884: for (ext = (struct sadb_ext *)(msg + 1);
! 885: (size_t)((u_int8_t *)ext - (u_int8_t *)msg) <
! 886: msg->sadb_msg_len * PFKEYV2_CHUNK && ext->sadb_ext_len > 0;
! 887: ext = (struct sadb_ext *)((u_int8_t *)ext +
! 888: ext->sadb_ext_len * PFKEYV2_CHUNK)) {
! 889: switch (ext->sadb_ext_type) {
! 890: case SADB_EXT_ADDRESS_SRC:
! 891: headers[SADB_EXT_ADDRESS_SRC] = (void *)ext;
! 892: break;
! 893: case SADB_EXT_ADDRESS_DST:
! 894: headers[SADB_EXT_ADDRESS_DST] = (void *)ext;
! 895: break;
! 896: case SADB_X_EXT_PROTOCOL:
! 897: headers[SADB_X_EXT_PROTOCOL] = (void *)ext;
! 898: break;
! 899: case SADB_X_EXT_SRC_FLOW:
! 900: headers[SADB_X_EXT_SRC_FLOW] = (void *)ext;
! 901: break;
! 902: case SADB_X_EXT_DST_FLOW:
! 903: headers[SADB_X_EXT_DST_FLOW] = (void *)ext;
! 904: break;
! 905: case SADB_X_EXT_SRC_MASK:
! 906: headers[SADB_X_EXT_SRC_MASK] = (void *)ext;
! 907: break;
! 908: case SADB_X_EXT_DST_MASK:
! 909: headers[SADB_X_EXT_DST_MASK] = (void *)ext;
! 910: break;
! 911: case SADB_X_EXT_FLOW_TYPE:
! 912: headers[SADB_X_EXT_FLOW_TYPE] = (void *)ext;
! 913: default:
! 914: /* Ignore. */
! 915: break;
! 916: }
! 917: }
! 918: }
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