Annotation of embedaddon/ntp/lib/isc/unix/ifiter_ioctl.c, revision 1.1
1.1 ! misho 1: /*
! 2: * Copyright (C) 2004-2009 Internet Systems Consortium, Inc. ("ISC")
! 3: * Copyright (C) 1999-2003 Internet Software Consortium.
! 4: *
! 5: * Permission to use, copy, modify, and/or distribute this software for any
! 6: * purpose with or without fee is hereby granted, provided that the above
! 7: * copyright notice and this permission notice appear in all copies.
! 8: *
! 9: * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
! 10: * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
! 11: * AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
! 12: * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
! 13: * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
! 14: * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
! 15: * PERFORMANCE OF THIS SOFTWARE.
! 16: */
! 17:
! 18: /* $Id: ifiter_ioctl.c,v 1.60.120.2 2009/01/18 23:47:41 tbox Exp $ */
! 19:
! 20: /*! \file
! 21: * \brief
! 22: * Obtain the list of network interfaces using the SIOCGLIFCONF ioctl.
! 23: * See netintro(4).
! 24: */
! 25:
! 26: #if defined(SIOCGLIFCONF) && defined(SIOCGLIFADDR)
! 27: #ifdef ISC_PLATFORM_HAVEIF_LADDRCONF
! 28: #define lifc_len iflc_len
! 29: #define lifc_buf iflc_buf
! 30: #define lifc_req iflc_req
! 31: #define LIFCONF if_laddrconf
! 32: #else
! 33: #define ISC_HAVE_LIFC_FAMILY 1
! 34: #define ISC_HAVE_LIFC_FLAGS 1
! 35: #define LIFCONF lifconf
! 36: #endif
! 37:
! 38: #ifdef ISC_PLATFORM_HAVEIF_LADDRREQ
! 39: #define lifr_addr iflr_addr
! 40: #define lifr_name iflr_name
! 41: #define lifr_dstaddr iflr_dstaddr
! 42: #define lifr_broadaddr iflr_broadaddr
! 43: #define lifr_flags iflr_flags
! 44: #define lifr_index iflr_index
! 45: #define ss_family sa_family
! 46: #define LIFREQ if_laddrreq
! 47: #else
! 48: #define LIFREQ lifreq
! 49: #endif
! 50: #endif
! 51:
! 52: #define IFITER_MAGIC ISC_MAGIC('I', 'F', 'I', 'T')
! 53: #define VALID_IFITER(t) ISC_MAGIC_VALID(t, IFITER_MAGIC)
! 54:
! 55: struct isc_interfaceiter {
! 56: unsigned int magic; /* Magic number. */
! 57: isc_mem_t *mctx;
! 58: int mode;
! 59: int socket;
! 60: struct ifconf ifc;
! 61: void *buf; /* Buffer for sysctl data. */
! 62: unsigned int bufsize; /* Bytes allocated. */
! 63: unsigned int pos; /* Current offset in
! 64: SIOCGIFCONF data */
! 65: #if defined(SIOCGLIFCONF) && defined(SIOCGLIFADDR)
! 66: int socket6;
! 67: struct LIFCONF lifc;
! 68: void *buf6; /* Buffer for sysctl data. */
! 69: unsigned int bufsize6; /* Bytes allocated. */
! 70: unsigned int pos6; /* Current offset in
! 71: SIOCGLIFCONF data */
! 72: isc_result_t result6; /* Last result code. */
! 73: isc_boolean_t first6;
! 74: #endif
! 75: #ifdef HAVE_TRUCLUSTER
! 76: int clua_context; /* Cluster alias context */
! 77: isc_boolean_t clua_done;
! 78: struct sockaddr clua_sa;
! 79: #endif
! 80: #ifdef __linux
! 81: FILE * proc;
! 82: char entry[ISC_IF_INET6_SZ];
! 83: isc_result_t valid;
! 84: #endif
! 85: isc_interface_t current; /* Current interface data. */
! 86: isc_result_t result; /* Last result code. */
! 87: };
! 88:
! 89: #ifdef HAVE_TRUCLUSTER
! 90: #include <clua/clua.h>
! 91: #include <sys/socket.h>
! 92: #endif
! 93:
! 94:
! 95: /*%
! 96: * Size of buffer for SIOCGLIFCONF, in bytes. We assume no sane system
! 97: * will have more than a megabyte of interface configuration data.
! 98: */
! 99: #define IFCONF_BUFSIZE_INITIAL 4096
! 100: #define IFCONF_BUFSIZE_MAX 1048576
! 101:
! 102: #ifdef __linux
! 103: #ifndef IF_NAMESIZE
! 104: # ifdef IFNAMSIZ
! 105: # define IF_NAMESIZE IFNAMSIZ
! 106: # else
! 107: # define IF_NAMESIZE 16
! 108: # endif
! 109: #endif
! 110: #endif
! 111:
! 112: static isc_result_t
! 113: getbuf4(isc_interfaceiter_t *iter) {
! 114: char strbuf[ISC_STRERRORSIZE];
! 115:
! 116: iter->bufsize = IFCONF_BUFSIZE_INITIAL;
! 117:
! 118: for (;;) {
! 119: iter->buf = isc_mem_get(iter->mctx, iter->bufsize);
! 120: if (iter->buf == NULL)
! 121: return (ISC_R_NOMEMORY);
! 122:
! 123: memset(&iter->ifc.ifc_len, 0, sizeof(iter->ifc.ifc_len));
! 124: iter->ifc.ifc_len = iter->bufsize;
! 125: iter->ifc.ifc_buf = iter->buf;
! 126: /*
! 127: * Ignore the HP/UX warning about "integer overflow during
! 128: * conversion". It comes from its own macro definition,
! 129: * and is really hard to shut up.
! 130: */
! 131: if (ioctl(iter->socket, SIOCGIFCONF, (char *)&iter->ifc)
! 132: == -1) {
! 133: if (errno != EINVAL) {
! 134: isc__strerror(errno, strbuf, sizeof(strbuf));
! 135: UNEXPECTED_ERROR(__FILE__, __LINE__,
! 136: isc_msgcat_get(isc_msgcat,
! 137: ISC_MSGSET_IFITERIOCTL,
! 138: ISC_MSG_GETIFCONFIG,
! 139: "get interface "
! 140: "configuration: %s"),
! 141: strbuf);
! 142: goto unexpected;
! 143: }
! 144: /*
! 145: * EINVAL. Retry with a bigger buffer.
! 146: */
! 147: } else {
! 148: /*
! 149: * The ioctl succeeded.
! 150: * Some OS's just return what will fit rather
! 151: * than set EINVAL if the buffer is too small
! 152: * to fit all the interfaces in. If
! 153: * ifc.lifc_len is too near to the end of the
! 154: * buffer we will grow it just in case and
! 155: * retry.
! 156: */
! 157: if (iter->ifc.ifc_len + 2 * sizeof(struct ifreq)
! 158: < iter->bufsize)
! 159: break;
! 160: }
! 161: if (iter->bufsize >= IFCONF_BUFSIZE_MAX) {
! 162: UNEXPECTED_ERROR(__FILE__, __LINE__,
! 163: isc_msgcat_get(isc_msgcat,
! 164: ISC_MSGSET_IFITERIOCTL,
! 165: ISC_MSG_BUFFERMAX,
! 166: "get interface "
! 167: "configuration: "
! 168: "maximum buffer "
! 169: "size exceeded"));
! 170: goto unexpected;
! 171: }
! 172: isc_mem_put(iter->mctx, iter->buf, iter->bufsize);
! 173:
! 174: iter->bufsize *= 2;
! 175: }
! 176: return (ISC_R_SUCCESS);
! 177:
! 178: unexpected:
! 179: isc_mem_put(iter->mctx, iter->buf, iter->bufsize);
! 180: iter->buf = NULL;
! 181: return (ISC_R_UNEXPECTED);
! 182: }
! 183:
! 184: #if defined(SIOCGLIFCONF) && defined(SIOCGLIFADDR)
! 185: static isc_result_t
! 186: getbuf6(isc_interfaceiter_t *iter) {
! 187: char strbuf[ISC_STRERRORSIZE];
! 188: isc_result_t result;
! 189:
! 190: iter->bufsize6 = IFCONF_BUFSIZE_INITIAL;
! 191:
! 192: for (;;) {
! 193: iter->buf6 = isc_mem_get(iter->mctx, iter->bufsize6);
! 194: if (iter->buf6 == NULL)
! 195: return (ISC_R_NOMEMORY);
! 196:
! 197: memset(&iter->lifc, 0, sizeof(iter->lifc));
! 198: #ifdef ISC_HAVE_LIFC_FAMILY
! 199: iter->lifc.lifc_family = AF_INET6;
! 200: #endif
! 201: #ifdef ISC_HAVE_LIFC_FLAGS
! 202: iter->lifc.lifc_flags = 0;
! 203: #endif
! 204: iter->lifc.lifc_len = iter->bufsize6;
! 205: iter->lifc.lifc_buf = iter->buf6;
! 206: /*
! 207: * Ignore the HP/UX warning about "integer overflow during
! 208: * conversion". It comes from its own macro definition,
! 209: * and is really hard to shut up.
! 210: */
! 211: if (ioctl(iter->socket6, SIOCGLIFCONF, (char *)&iter->lifc)
! 212: == -1) {
! 213: #ifdef __hpux
! 214: /*
! 215: * IPv6 interface scanning is not available on all
! 216: * kernels w/ IPv6 sockets.
! 217: */
! 218: if (errno == ENOENT) {
! 219: isc__strerror(errno, strbuf, sizeof(strbuf));
! 220: isc_log_write(isc_lctx, ISC_LOGCATEGORY_GENERAL,
! 221: ISC_LOGMODULE_INTERFACE,
! 222: ISC_LOG_DEBUG(1),
! 223: isc_msgcat_get(isc_msgcat,
! 224: ISC_MSGSET_IFITERIOCTL,
! 225: ISC_MSG_GETIFCONFIG,
! 226: "get interface "
! 227: "configuration: %s"),
! 228: strbuf);
! 229: result = ISC_R_FAILURE;
! 230: goto cleanup;
! 231: }
! 232: #endif
! 233: if (errno != EINVAL) {
! 234: isc__strerror(errno, strbuf, sizeof(strbuf));
! 235: UNEXPECTED_ERROR(__FILE__, __LINE__,
! 236: isc_msgcat_get(isc_msgcat,
! 237: ISC_MSGSET_IFITERIOCTL,
! 238: ISC_MSG_GETIFCONFIG,
! 239: "get interface "
! 240: "configuration: %s"),
! 241: strbuf);
! 242: result = ISC_R_UNEXPECTED;
! 243: goto cleanup;
! 244: }
! 245: /*
! 246: * EINVAL. Retry with a bigger buffer.
! 247: */
! 248: } else {
! 249: /*
! 250: * The ioctl succeeded.
! 251: * Some OS's just return what will fit rather
! 252: * than set EINVAL if the buffer is too small
! 253: * to fit all the interfaces in. If
! 254: * ifc.ifc_len is too near to the end of the
! 255: * buffer we will grow it just in case and
! 256: * retry.
! 257: */
! 258: if (iter->lifc.lifc_len + 2 * sizeof(struct LIFREQ)
! 259: < iter->bufsize6)
! 260: break;
! 261: }
! 262: if (iter->bufsize6 >= IFCONF_BUFSIZE_MAX) {
! 263: UNEXPECTED_ERROR(__FILE__, __LINE__,
! 264: isc_msgcat_get(isc_msgcat,
! 265: ISC_MSGSET_IFITERIOCTL,
! 266: ISC_MSG_BUFFERMAX,
! 267: "get interface "
! 268: "configuration: "
! 269: "maximum buffer "
! 270: "size exceeded"));
! 271: result = ISC_R_UNEXPECTED;
! 272: goto cleanup;
! 273: }
! 274: isc_mem_put(iter->mctx, iter->buf6, iter->bufsize6);
! 275:
! 276: iter->bufsize6 *= 2;
! 277: }
! 278:
! 279: if (iter->lifc.lifc_len != 0)
! 280: iter->mode = 6;
! 281: return (ISC_R_SUCCESS);
! 282:
! 283: cleanup:
! 284: isc_mem_put(iter->mctx, iter->buf6, iter->bufsize6);
! 285: iter->buf6 = NULL;
! 286: return (result);
! 287: }
! 288: #endif
! 289:
! 290: isc_result_t
! 291: isc_interfaceiter_create(isc_mem_t *mctx, isc_interfaceiter_t **iterp) {
! 292: isc_interfaceiter_t *iter;
! 293: isc_result_t result;
! 294: char strbuf[ISC_STRERRORSIZE];
! 295:
! 296: REQUIRE(mctx != NULL);
! 297: REQUIRE(iterp != NULL);
! 298: REQUIRE(*iterp == NULL);
! 299:
! 300: iter = isc_mem_get(mctx, sizeof(*iter));
! 301: if (iter == NULL)
! 302: return (ISC_R_NOMEMORY);
! 303:
! 304: iter->mctx = mctx;
! 305: iter->mode = 4;
! 306: iter->buf = NULL;
! 307: iter->pos = (unsigned int) -1;
! 308: #if defined(SIOCGLIFCONF) && defined(SIOCGLIFADDR)
! 309: iter->buf6 = NULL;
! 310: iter->pos6 = (unsigned int) -1;
! 311: iter->result6 = ISC_R_NOMORE;
! 312: iter->socket6 = -1;
! 313: iter->first6 = ISC_FALSE;
! 314: #endif
! 315:
! 316: /*
! 317: * Get the interface configuration, allocating more memory if
! 318: * necessary.
! 319: */
! 320:
! 321: #if defined(SIOCGLIFCONF) && defined(SIOCGLIFADDR)
! 322: result = isc_net_probeipv6();
! 323: if (result == ISC_R_SUCCESS) {
! 324: /*
! 325: * Create an unbound datagram socket to do the SIOCGLIFCONF
! 326: * ioctl on. HP/UX requires an AF_INET6 socket for
! 327: * SIOCGLIFCONF to get IPv6 addresses.
! 328: */
! 329: if ((iter->socket6 = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) {
! 330: isc__strerror(errno, strbuf, sizeof(strbuf));
! 331: UNEXPECTED_ERROR(__FILE__, __LINE__,
! 332: isc_msgcat_get(isc_msgcat,
! 333: ISC_MSGSET_IFITERIOCTL,
! 334: ISC_MSG_MAKESCANSOCKET,
! 335: "making interface "
! 336: "scan socket: %s"),
! 337: strbuf);
! 338: result = ISC_R_UNEXPECTED;
! 339: goto socket6_failure;
! 340: }
! 341: result = iter->result6 = getbuf6(iter);
! 342: if (result != ISC_R_NOTIMPLEMENTED && result != ISC_R_SUCCESS)
! 343: goto ioctl6_failure;
! 344: }
! 345: #endif
! 346: if ((iter->socket = socket(AF_INET, SOCK_DGRAM, 0)) < 0) {
! 347: isc__strerror(errno, strbuf, sizeof(strbuf));
! 348: UNEXPECTED_ERROR(__FILE__, __LINE__,
! 349: isc_msgcat_get(isc_msgcat,
! 350: ISC_MSGSET_IFITERIOCTL,
! 351: ISC_MSG_MAKESCANSOCKET,
! 352: "making interface "
! 353: "scan socket: %s"),
! 354: strbuf);
! 355: result = ISC_R_UNEXPECTED;
! 356: goto socket_failure;
! 357: }
! 358: result = getbuf4(iter);
! 359: if (result != ISC_R_SUCCESS)
! 360: goto ioctl_failure;
! 361:
! 362: /*
! 363: * A newly created iterator has an undefined position
! 364: * until isc_interfaceiter_first() is called.
! 365: */
! 366: #ifdef HAVE_TRUCLUSTER
! 367: iter->clua_context = -1;
! 368: iter->clua_done = ISC_TRUE;
! 369: #endif
! 370: #ifdef __linux
! 371: iter->proc = fopen("/proc/net/if_inet6", "r");
! 372: iter->valid = ISC_R_FAILURE;
! 373: #endif
! 374: iter->result = ISC_R_FAILURE;
! 375:
! 376: iter->magic = IFITER_MAGIC;
! 377: *iterp = iter;
! 378: return (ISC_R_SUCCESS);
! 379:
! 380: ioctl_failure:
! 381: if (iter->buf != NULL)
! 382: isc_mem_put(mctx, iter->buf, iter->bufsize);
! 383: (void) close(iter->socket);
! 384:
! 385: socket_failure:
! 386: #if defined(SIOCGLIFCONF) && defined(SIOCGLIFADDR)
! 387: if (iter->buf6 != NULL)
! 388: isc_mem_put(mctx, iter->buf6, iter->bufsize6);
! 389: ioctl6_failure:
! 390: if (iter->socket6 != -1)
! 391: (void) close(iter->socket6);
! 392: socket6_failure:
! 393: #endif
! 394:
! 395: isc_mem_put(mctx, iter, sizeof(*iter));
! 396: return (result);
! 397: }
! 398:
! 399: #ifdef HAVE_TRUCLUSTER
! 400: static void
! 401: get_inaddr(isc_netaddr_t *dst, struct in_addr *src) {
! 402: dst->family = AF_INET;
! 403: memcpy(&dst->type.in, src, sizeof(struct in_addr));
! 404: }
! 405:
! 406: static isc_result_t
! 407: internal_current_clusteralias(isc_interfaceiter_t *iter) {
! 408: struct clua_info ci;
! 409: if (clua_getaliasinfo(&iter->clua_sa, &ci) != CLUA_SUCCESS)
! 410: return (ISC_R_IGNORE);
! 411: memset(&iter->current, 0, sizeof(iter->current));
! 412: iter->current.af = iter->clua_sa.sa_family;
! 413: memset(iter->current.name, 0, sizeof(iter->current.name));
! 414: sprintf(iter->current.name, "clua%d", ci.aliasid);
! 415: iter->current.flags = INTERFACE_F_UP;
! 416: get_inaddr(&iter->current.address, &ci.addr);
! 417: get_inaddr(&iter->current.netmask, &ci.netmask);
! 418: return (ISC_R_SUCCESS);
! 419: }
! 420: #endif
! 421:
! 422: /*
! 423: * Get information about the current interface to iter->current.
! 424: * If successful, return ISC_R_SUCCESS.
! 425: * If the interface has an unsupported address family, or if
! 426: * some operation on it fails, return ISC_R_IGNORE to make
! 427: * the higher-level iterator code ignore it.
! 428: */
! 429:
! 430: static isc_result_t
! 431: internal_current4(isc_interfaceiter_t *iter) {
! 432: struct ifreq *ifrp;
! 433: struct ifreq ifreq;
! 434: int family;
! 435: char strbuf[ISC_STRERRORSIZE];
! 436: #if !defined(ISC_PLATFORM_HAVEIF_LADDRREQ) && defined(SIOCGLIFADDR)
! 437: struct lifreq lifreq;
! 438: #else
! 439: char sabuf[256];
! 440: #endif
! 441: int i, bits, prefixlen;
! 442:
! 443: REQUIRE(VALID_IFITER(iter));
! 444:
! 445: if (iter->ifc.ifc_len == 0 ||
! 446: iter->pos == (unsigned int)iter->ifc.ifc_len) {
! 447: #ifdef __linux
! 448: return (linux_if_inet6_current(iter));
! 449: #else
! 450: return (ISC_R_NOMORE);
! 451: #endif
! 452: }
! 453:
! 454: INSIST( iter->pos < (unsigned int) iter->ifc.ifc_len);
! 455:
! 456: ifrp = (struct ifreq *)((char *) iter->ifc.ifc_req + iter->pos);
! 457:
! 458: memset(&ifreq, 0, sizeof(ifreq));
! 459: memcpy(&ifreq, ifrp, sizeof(ifreq));
! 460:
! 461: family = ifreq.ifr_addr.sa_family;
! 462: #if defined(ISC_PLATFORM_HAVEIPV6)
! 463: if (family != AF_INET && family != AF_INET6)
! 464: #else
! 465: if (family != AF_INET)
! 466: #endif
! 467: return (ISC_R_IGNORE);
! 468:
! 469: memset(&iter->current, 0, sizeof(iter->current));
! 470: iter->current.af = family;
! 471:
! 472: INSIST(sizeof(ifreq.ifr_name) <= sizeof(iter->current.name));
! 473: memset(iter->current.name, 0, sizeof(iter->current.name));
! 474: memcpy(iter->current.name, ifreq.ifr_name, sizeof(ifreq.ifr_name));
! 475:
! 476: get_addr(family, &iter->current.address,
! 477: (struct sockaddr *)&ifrp->ifr_addr, ifreq.ifr_name);
! 478:
! 479: /*
! 480: * If the interface does not have a address ignore it.
! 481: */
! 482: switch (family) {
! 483: case AF_INET:
! 484: if (iter->current.address.type.in.s_addr == htonl(INADDR_ANY))
! 485: return (ISC_R_IGNORE);
! 486: break;
! 487: case AF_INET6:
! 488: if (memcmp(&iter->current.address.type.in6, &in6addr_any,
! 489: sizeof(in6addr_any)) == 0)
! 490: return (ISC_R_IGNORE);
! 491: break;
! 492: }
! 493:
! 494: /*
! 495: * Get interface flags.
! 496: */
! 497:
! 498: iter->current.flags = 0;
! 499:
! 500: /*
! 501: * Ignore the HP/UX warning about "integer overflow during
! 502: * conversion. It comes from its own macro definition,
! 503: * and is really hard to shut up.
! 504: */
! 505: if (ioctl(iter->socket, SIOCGIFFLAGS, (char *) &ifreq) < 0) {
! 506: isc__strerror(errno, strbuf, sizeof(strbuf));
! 507: UNEXPECTED_ERROR(__FILE__, __LINE__,
! 508: "%s: getting interface flags: %s",
! 509: ifreq.ifr_name, strbuf);
! 510: return (ISC_R_IGNORE);
! 511: }
! 512:
! 513: if ((ifreq.ifr_flags & IFF_UP) != 0)
! 514: iter->current.flags |= INTERFACE_F_UP;
! 515:
! 516: #ifdef IFF_POINTOPOINT
! 517: if ((ifreq.ifr_flags & IFF_POINTOPOINT) != 0)
! 518: iter->current.flags |= INTERFACE_F_POINTTOPOINT;
! 519: #endif
! 520:
! 521: if ((ifreq.ifr_flags & IFF_LOOPBACK) != 0)
! 522: iter->current.flags |= INTERFACE_F_LOOPBACK;
! 523:
! 524: if ((ifreq.ifr_flags & IFF_BROADCAST) != 0)
! 525: iter->current.flags |= INTERFACE_F_BROADCAST;
! 526:
! 527: #ifdef IFF_MULTICAST
! 528: if ((ifreq.ifr_flags & IFF_MULTICAST) != 0)
! 529: iter->current.flags |= INTERFACE_F_MULTICAST;
! 530: #endif
! 531:
! 532: if (family == AF_INET)
! 533: goto inet;
! 534:
! 535: #if !defined(ISC_PLATFORM_HAVEIF_LADDRREQ) && defined(SIOCGLIFADDR)
! 536: memset(&lifreq, 0, sizeof(lifreq));
! 537: memcpy(lifreq.lifr_name, iter->current.name, sizeof(lifreq.lifr_name));
! 538: memcpy(&lifreq.lifr_addr, &iter->current.address.type.in6,
! 539: sizeof(iter->current.address.type.in6));
! 540:
! 541: if (ioctl(iter->socket, SIOCGLIFADDR, &lifreq) < 0) {
! 542: isc__strerror(errno, strbuf, sizeof(strbuf));
! 543: UNEXPECTED_ERROR(__FILE__, __LINE__,
! 544: "%s: getting interface address: %s",
! 545: ifreq.ifr_name, strbuf);
! 546: return (ISC_R_IGNORE);
! 547: }
! 548: prefixlen = lifreq.lifr_addrlen;
! 549: #else
! 550: isc_netaddr_format(&iter->current.address, sabuf, sizeof(sabuf));
! 551: isc_log_write(isc_lctx, ISC_LOGCATEGORY_GENERAL,
! 552: ISC_LOGMODULE_INTERFACE,
! 553: ISC_LOG_INFO,
! 554: isc_msgcat_get(isc_msgcat,
! 555: ISC_MSGSET_IFITERIOCTL,
! 556: ISC_MSG_GETIFCONFIG,
! 557: "prefix length for %s is unknown "
! 558: "(assume 128)"), sabuf);
! 559: prefixlen = 128;
! 560: #endif
! 561:
! 562: /*
! 563: * Netmask already zeroed.
! 564: */
! 565: iter->current.netmask.family = family;
! 566: for (i = 0; i < 16; i++) {
! 567: if (prefixlen > 8) {
! 568: bits = 0;
! 569: prefixlen -= 8;
! 570: } else {
! 571: bits = 8 - prefixlen;
! 572: prefixlen = 0;
! 573: }
! 574: iter->current.netmask.type.in6.s6_addr[i] = (~0 << bits) & 0xff;
! 575: }
! 576: return (ISC_R_SUCCESS);
! 577:
! 578: inet:
! 579: if (family != AF_INET)
! 580: return (ISC_R_IGNORE);
! 581: #ifdef IFF_POINTOPOINT
! 582: /*
! 583: * If the interface is point-to-point, get the destination address.
! 584: */
! 585: if ((iter->current.flags & INTERFACE_F_POINTTOPOINT) != 0) {
! 586: /*
! 587: * Ignore the HP/UX warning about "integer overflow during
! 588: * conversion. It comes from its own macro definition,
! 589: * and is really hard to shut up.
! 590: */
! 591: if (ioctl(iter->socket, SIOCGIFDSTADDR, (char *)&ifreq)
! 592: < 0) {
! 593: isc__strerror(errno, strbuf, sizeof(strbuf));
! 594: UNEXPECTED_ERROR(__FILE__, __LINE__,
! 595: isc_msgcat_get(isc_msgcat,
! 596: ISC_MSGSET_IFITERIOCTL,
! 597: ISC_MSG_GETDESTADDR,
! 598: "%s: getting "
! 599: "destination address: %s"),
! 600: ifreq.ifr_name, strbuf);
! 601: return (ISC_R_IGNORE);
! 602: }
! 603: get_addr(family, &iter->current.dstaddress,
! 604: (struct sockaddr *)&ifreq.ifr_dstaddr, ifreq.ifr_name);
! 605: }
! 606: #endif
! 607:
! 608: if ((iter->current.flags & INTERFACE_F_BROADCAST) != 0) {
! 609: /*
! 610: * Ignore the HP/UX warning about "integer overflow during
! 611: * conversion. It comes from its own macro definition,
! 612: * and is really hard to shut up.
! 613: */
! 614: if (ioctl(iter->socket, SIOCGIFBRDADDR, (char *)&ifreq)
! 615: < 0) {
! 616: isc__strerror(errno, strbuf, sizeof(strbuf));
! 617: UNEXPECTED_ERROR(__FILE__, __LINE__,
! 618: isc_msgcat_get(isc_msgcat,
! 619: ISC_MSGSET_IFITERIOCTL,
! 620: ISC_MSG_GETBCSTADDR,
! 621: "%s: getting "
! 622: "broadcast address: %s"),
! 623: ifreq.ifr_name, strbuf);
! 624: return (ISC_R_IGNORE);
! 625: }
! 626: get_addr(family, &iter->current.broadcast,
! 627: (struct sockaddr *)&ifreq.ifr_broadaddr, ifreq.ifr_name);
! 628: }
! 629:
! 630: /*
! 631: * Get the network mask.
! 632: */
! 633: memset(&ifreq, 0, sizeof(ifreq));
! 634: memcpy(&ifreq, ifrp, sizeof(ifreq));
! 635: /*
! 636: * Ignore the HP/UX warning about "integer overflow during
! 637: * conversion. It comes from its own macro definition,
! 638: * and is really hard to shut up.
! 639: */
! 640: if (ioctl(iter->socket, SIOCGIFNETMASK, (char *)&ifreq) < 0) {
! 641: isc__strerror(errno, strbuf, sizeof(strbuf));
! 642: UNEXPECTED_ERROR(__FILE__, __LINE__,
! 643: isc_msgcat_get(isc_msgcat,
! 644: ISC_MSGSET_IFITERIOCTL,
! 645: ISC_MSG_GETNETMASK,
! 646: "%s: getting netmask: %s"),
! 647: ifreq.ifr_name, strbuf);
! 648: return (ISC_R_IGNORE);
! 649: }
! 650: get_addr(family, &iter->current.netmask,
! 651: (struct sockaddr *)&ifreq.ifr_addr, ifreq.ifr_name);
! 652: return (ISC_R_SUCCESS);
! 653: }
! 654:
! 655: #if defined(SIOCGLIFCONF) && defined(SIOCGLIFADDR)
! 656: static isc_result_t
! 657: internal_current6(isc_interfaceiter_t *iter) {
! 658: struct LIFREQ *ifrp;
! 659: struct LIFREQ lifreq;
! 660: int family;
! 661: char strbuf[ISC_STRERRORSIZE];
! 662: int fd;
! 663:
! 664: REQUIRE(VALID_IFITER(iter));
! 665: if (iter->result6 != ISC_R_SUCCESS)
! 666: return (iter->result6);
! 667: REQUIRE(iter->pos6 < (unsigned int) iter->lifc.lifc_len);
! 668:
! 669: ifrp = (struct LIFREQ *)((char *) iter->lifc.lifc_req + iter->pos6);
! 670:
! 671: memset(&lifreq, 0, sizeof(lifreq));
! 672: memcpy(&lifreq, ifrp, sizeof(lifreq));
! 673:
! 674: family = lifreq.lifr_addr.ss_family;
! 675: #ifdef ISC_PLATFORM_HAVEIPV6
! 676: if (family != AF_INET && family != AF_INET6)
! 677: #else
! 678: if (family != AF_INET)
! 679: #endif
! 680: return (ISC_R_IGNORE);
! 681:
! 682: memset(&iter->current, 0, sizeof(iter->current));
! 683: iter->current.af = family;
! 684:
! 685: INSIST(sizeof(lifreq.lifr_name) <= sizeof(iter->current.name));
! 686: memset(iter->current.name, 0, sizeof(iter->current.name));
! 687: memcpy(iter->current.name, lifreq.lifr_name, sizeof(lifreq.lifr_name));
! 688:
! 689: get_addr(family, &iter->current.address,
! 690: (struct sockaddr *)&lifreq.lifr_addr, lifreq.lifr_name);
! 691:
! 692: iter->current.ifindex = lifreq.lifr_index;
! 693: if (isc_netaddr_islinklocal(&iter->current.address))
! 694: isc_netaddr_setzone(&iter->current.address,
! 695: (isc_uint32_t)lifreq.lifr_index);
! 696:
! 697: /*
! 698: * If the interface does not have a address ignore it.
! 699: */
! 700: switch (family) {
! 701: case AF_INET:
! 702: if (iter->current.address.type.in.s_addr == htonl(INADDR_ANY))
! 703: return (ISC_R_IGNORE);
! 704: break;
! 705: case AF_INET6:
! 706: if (memcmp(&iter->current.address.type.in6, &in6addr_any,
! 707: sizeof(in6addr_any)) == 0)
! 708: return (ISC_R_IGNORE);
! 709: break;
! 710: }
! 711:
! 712: /*
! 713: * Get interface flags.
! 714: */
! 715:
! 716: iter->current.flags = 0;
! 717:
! 718: if (family == AF_INET6)
! 719: fd = iter->socket6;
! 720: else
! 721: fd = iter->socket;
! 722:
! 723: /*
! 724: * Ignore the HP/UX warning about "integer overflow during
! 725: * conversion. It comes from its own macro definition,
! 726: * and is really hard to shut up.
! 727: */
! 728: if (ioctl(fd, SIOCGLIFFLAGS, (char *) &lifreq) < 0) {
! 729: isc__strerror(errno, strbuf, sizeof(strbuf));
! 730: UNEXPECTED_ERROR(__FILE__, __LINE__,
! 731: "%s: getting interface flags: %s",
! 732: lifreq.lifr_name, strbuf);
! 733: return (ISC_R_IGNORE);
! 734: }
! 735:
! 736: if ((lifreq.lifr_flags & IFF_UP) != 0)
! 737: iter->current.flags |= INTERFACE_F_UP;
! 738:
! 739: #ifdef IFF_POINTOPOINT
! 740: if ((lifreq.lifr_flags & IFF_POINTOPOINT) != 0)
! 741: iter->current.flags |= INTERFACE_F_POINTTOPOINT;
! 742: #endif
! 743:
! 744: if ((lifreq.lifr_flags & IFF_LOOPBACK) != 0)
! 745: iter->current.flags |= INTERFACE_F_LOOPBACK;
! 746:
! 747: if ((lifreq.lifr_flags & IFF_BROADCAST) != 0) {
! 748: iter->current.flags |= INTERFACE_F_BROADCAST;
! 749: }
! 750:
! 751: #ifdef IFF_MULTICAST
! 752: if ((lifreq.lifr_flags & IFF_MULTICAST) != 0) {
! 753: iter->current.flags |= INTERFACE_F_MULTICAST;
! 754: }
! 755: #endif
! 756:
! 757: #ifdef IFF_POINTOPOINT
! 758: /*
! 759: * If the interface is point-to-point, get the destination address.
! 760: */
! 761: if ((iter->current.flags & INTERFACE_F_POINTTOPOINT) != 0) {
! 762: /*
! 763: * Ignore the HP/UX warning about "integer overflow during
! 764: * conversion. It comes from its own macro definition,
! 765: * and is really hard to shut up.
! 766: */
! 767: if (ioctl(fd, SIOCGLIFDSTADDR, (char *)&lifreq)
! 768: < 0) {
! 769: isc__strerror(errno, strbuf, sizeof(strbuf));
! 770: UNEXPECTED_ERROR(__FILE__, __LINE__,
! 771: isc_msgcat_get(isc_msgcat,
! 772: ISC_MSGSET_IFITERIOCTL,
! 773: ISC_MSG_GETDESTADDR,
! 774: "%s: getting "
! 775: "destination address: %s"),
! 776: lifreq.lifr_name, strbuf);
! 777: return (ISC_R_IGNORE);
! 778: }
! 779: get_addr(family, &iter->current.dstaddress,
! 780: (struct sockaddr *)&lifreq.lifr_dstaddr,
! 781: lifreq.lifr_name);
! 782: }
! 783: #endif
! 784:
! 785: #ifdef SIOCGLIFBRDADDR
! 786: if ((iter->current.flags & INTERFACE_F_BROADCAST) != 0) {
! 787: /*
! 788: * Ignore the HP/UX warning about "integer overflow during
! 789: * conversion. It comes from its own macro definition,
! 790: * and is really hard to shut up.
! 791: */
! 792: if (ioctl(iter->socket, SIOCGLIFBRDADDR, (char *)&lifreq)
! 793: < 0) {
! 794: isc__strerror(errno, strbuf, sizeof(strbuf));
! 795: UNEXPECTED_ERROR(__FILE__, __LINE__,
! 796: isc_msgcat_get(isc_msgcat,
! 797: ISC_MSGSET_IFITERIOCTL,
! 798: ISC_MSG_GETBCSTADDR,
! 799: "%s: getting "
! 800: "broadcast address: %s"),
! 801: lifreq.lifr_name, strbuf);
! 802: return (ISC_R_IGNORE);
! 803: }
! 804: get_addr(family, &iter->current.broadcast,
! 805: (struct sockaddr *)&lifreq.lifr_broadaddr,
! 806: lifreq.lifr_name);
! 807: }
! 808: #endif /* SIOCGLIFBRDADDR */
! 809:
! 810: /*
! 811: * Get the network mask. Netmask already zeroed.
! 812: */
! 813: memset(&lifreq, 0, sizeof(lifreq));
! 814: memcpy(&lifreq, ifrp, sizeof(lifreq));
! 815:
! 816: #ifdef lifr_addrlen
! 817: /*
! 818: * Special case: if the system provides lifr_addrlen member, the
! 819: * netmask of an IPv6 address can be derived from the length, since
! 820: * an IPv6 address always has a contiguous mask.
! 821: */
! 822: if (family == AF_INET6) {
! 823: int i, bits;
! 824:
! 825: iter->current.netmask.family = family;
! 826: for (i = 0; i < lifreq.lifr_addrlen; i += 8) {
! 827: bits = lifreq.lifr_addrlen - i;
! 828: bits = (bits < 8) ? (8 - bits) : 0;
! 829: iter->current.netmask.type.in6.s6_addr[i / 8] =
! 830: (~0 << bits) & 0xff;
! 831: }
! 832:
! 833: return (ISC_R_SUCCESS);
! 834: }
! 835: #endif
! 836:
! 837: /*
! 838: * Ignore the HP/UX warning about "integer overflow during
! 839: * conversion. It comes from its own macro definition,
! 840: * and is really hard to shut up.
! 841: */
! 842: if (ioctl(fd, SIOCGLIFNETMASK, (char *)&lifreq) < 0) {
! 843: isc__strerror(errno, strbuf, sizeof(strbuf));
! 844: UNEXPECTED_ERROR(__FILE__, __LINE__,
! 845: isc_msgcat_get(isc_msgcat,
! 846: ISC_MSGSET_IFITERIOCTL,
! 847: ISC_MSG_GETNETMASK,
! 848: "%s: getting netmask: %s"),
! 849: lifreq.lifr_name, strbuf);
! 850: return (ISC_R_IGNORE);
! 851: }
! 852: get_addr(family, &iter->current.netmask,
! 853: (struct sockaddr *)&lifreq.lifr_addr, lifreq.lifr_name);
! 854:
! 855: return (ISC_R_SUCCESS);
! 856: }
! 857: #endif
! 858:
! 859: static isc_result_t
! 860: internal_current(isc_interfaceiter_t *iter) {
! 861: #if defined(SIOCGLIFCONF) && defined(SIOCGLIFADDR)
! 862: if (iter->mode == 6) {
! 863: iter->result6 = internal_current6(iter);
! 864: if (iter->result6 != ISC_R_NOMORE)
! 865: return (iter->result6);
! 866: }
! 867: #endif
! 868: #ifdef HAVE_TRUCLUSTER
! 869: if (!iter->clua_done)
! 870: return(internal_current_clusteralias(iter));
! 871: #endif
! 872: return (internal_current4(iter));
! 873: }
! 874:
! 875: /*
! 876: * Step the iterator to the next interface. Unlike
! 877: * isc_interfaceiter_next(), this may leave the iterator
! 878: * positioned on an interface that will ultimately
! 879: * be ignored. Return ISC_R_NOMORE if there are no more
! 880: * interfaces, otherwise ISC_R_SUCCESS.
! 881: */
! 882: static isc_result_t
! 883: internal_next4(isc_interfaceiter_t *iter) {
! 884: #ifdef ISC_PLATFORM_HAVESALEN
! 885: struct ifreq *ifrp;
! 886: #endif
! 887:
! 888: if (iter->pos < (unsigned int) iter->ifc.ifc_len) {
! 889: #ifdef ISC_PLATFORM_HAVESALEN
! 890: ifrp = (struct ifreq *)((char *) iter->ifc.ifc_req + iter->pos);
! 891:
! 892: if (ifrp->ifr_addr.sa_len > sizeof(struct sockaddr))
! 893: iter->pos += sizeof(ifrp->ifr_name) +
! 894: ifrp->ifr_addr.sa_len;
! 895: else
! 896: #endif
! 897: iter->pos += sizeof(struct ifreq);
! 898:
! 899: } else {
! 900: INSIST(iter->pos == (unsigned int) iter->ifc.ifc_len);
! 901: #ifdef __linux
! 902: return (linux_if_inet6_next(iter));
! 903: #else
! 904: return (ISC_R_NOMORE);
! 905: #endif
! 906: }
! 907: return (ISC_R_SUCCESS);
! 908: }
! 909:
! 910: #if defined(SIOCGLIFCONF) && defined(SIOCGLIFADDR)
! 911: static isc_result_t
! 912: internal_next6(isc_interfaceiter_t *iter) {
! 913: #ifdef ISC_PLATFORM_HAVESALEN
! 914: struct LIFREQ *ifrp;
! 915: #endif
! 916:
! 917: if (iter->result6 != ISC_R_SUCCESS && iter->result6 != ISC_R_IGNORE)
! 918: return (iter->result6);
! 919:
! 920: REQUIRE(iter->pos6 < (unsigned int) iter->lifc.lifc_len);
! 921:
! 922: #ifdef ISC_PLATFORM_HAVESALEN
! 923: ifrp = (struct LIFREQ *)((char *) iter->lifc.lifc_req + iter->pos6);
! 924:
! 925: if (ifrp->lifr_addr.sa_len > sizeof(struct sockaddr))
! 926: iter->pos6 += sizeof(ifrp->lifr_name) + ifrp->lifr_addr.sa_len;
! 927: else
! 928: #endif
! 929: iter->pos6 += sizeof(struct LIFREQ);
! 930:
! 931: if (iter->pos6 >= (unsigned int) iter->lifc.lifc_len)
! 932: return (ISC_R_NOMORE);
! 933:
! 934: return (ISC_R_SUCCESS);
! 935: }
! 936: #endif
! 937:
! 938: static isc_result_t
! 939: internal_next(isc_interfaceiter_t *iter) {
! 940: #ifdef HAVE_TRUCLUSTER
! 941: int clua_result;
! 942: #endif
! 943: #if defined(SIOCGLIFCONF) && defined(SIOCGLIFADDR)
! 944: if (iter->mode == 6) {
! 945: iter->result6 = internal_next6(iter);
! 946: if (iter->result6 != ISC_R_NOMORE)
! 947: return (iter->result6);
! 948: if (iter->first6) {
! 949: iter->first6 = ISC_FALSE;
! 950: return (ISC_R_SUCCESS);
! 951: }
! 952: }
! 953: #endif
! 954: #ifdef HAVE_TRUCLUSTER
! 955: if (!iter->clua_done) {
! 956: clua_result = clua_getaliasaddress(&iter->clua_sa,
! 957: &iter->clua_context);
! 958: if (clua_result != CLUA_SUCCESS)
! 959: iter->clua_done = ISC_TRUE;
! 960: return (ISC_R_SUCCESS);
! 961: }
! 962: #endif
! 963: return (internal_next4(iter));
! 964: }
! 965:
! 966: static void
! 967: internal_destroy(isc_interfaceiter_t *iter) {
! 968: (void) close(iter->socket);
! 969: #if defined(SIOCGLIFCONF) && defined(SIOCGLIFADDR)
! 970: if (iter->socket6 != -1)
! 971: (void) close(iter->socket6);
! 972: if (iter->buf6 != NULL) {
! 973: isc_mem_put(iter->mctx, iter->buf6, iter->bufsize6);
! 974: }
! 975: #endif
! 976: #ifdef __linux
! 977: if (iter->proc != NULL)
! 978: fclose(iter->proc);
! 979: #endif
! 980: }
! 981:
! 982: static
! 983: void internal_first(isc_interfaceiter_t *iter) {
! 984: #ifdef HAVE_TRUCLUSTER
! 985: int clua_result;
! 986: #endif
! 987: iter->pos = 0;
! 988: #if defined(SIOCGLIFCONF) && defined(SIOCGLIFADDR)
! 989: iter->pos6 = 0;
! 990: if (iter->result6 == ISC_R_NOMORE)
! 991: iter->result6 = ISC_R_SUCCESS;
! 992: iter->first6 = ISC_TRUE;
! 993: #endif
! 994: #ifdef HAVE_TRUCLUSTER
! 995: iter->clua_context = 0;
! 996: clua_result = clua_getaliasaddress(&iter->clua_sa,
! 997: &iter->clua_context);
! 998: iter->clua_done = ISC_TF(clua_result != CLUA_SUCCESS);
! 999: #endif
! 1000: #ifdef __linux
! 1001: linux_if_inet6_first(iter);
! 1002: #endif
! 1003: }
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