diff options
Diffstat (limited to 'libisc/interfaceiter.c')
| -rw-r--r-- | libisc/interfaceiter.c | 105 |
1 files changed, 83 insertions, 22 deletions
diff --git a/libisc/interfaceiter.c b/libisc/interfaceiter.c index 37af9f3..7e31975 100644 --- a/libisc/interfaceiter.c +++ b/libisc/interfaceiter.c @@ -1,24 +1,26 @@ /* - * Copyright (C) 1999-2001 Internet Software Consortium. + * Copyright (C) 2004 Internet Systems Consortium, Inc. ("ISC") + * Copyright (C) 1999-2003 Internet Software Consortium. * * Permission to use, copy, modify, and distribute this software for any * purpose with or without fee is hereby granted, provided that the above * copyright notice and this permission notice appear in all copies. * - * THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM - * DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL - * INTERNET SOFTWARE CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT, - * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING - * FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, - * NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION - * WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH + * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY + * AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT, + * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM + * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE + * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR + * PERFORMANCE OF THIS SOFTWARE. */ -/* $Id: interfaceiter.c,v 1.27 2002/07/02 05:51:43 marka Exp $ */ +/* $Id: interfaceiter.c,v 1.22.2.1.10.14 2004/08/28 06:25:22 marka Exp $ */ #include <config.h> +#define ISC_ONLY_IPV6 + #include <sys/types.h> #include <sys/ioctl.h> #ifdef HAVE_SYS_SOCKIO_H @@ -35,6 +37,7 @@ #include <isc/mem.h> #include <isc/msgs.h> #include <isc/net.h> +#include <isc/print.h> #include <isc/result.h> #include <isc/strerror.h> #include <isc/string.h> @@ -45,21 +48,32 @@ #ifdef HAVE_NET_IF6_H #include <net/if6.h> #endif -#include <net/if.h> /* Common utility functions */ /* * Extract the network address part from a "struct sockaddr". * - * The address family is given explicity + * The address family is given explicitly * instead of using src->sa_family, because the latter does not work * for copying a network mask obtained by SIOCGIFNETMASK (it does * not have a valid address family). */ static void -get_addr(unsigned int family, isc_netaddr_t *dst, struct sockaddr *src) { +get_addr(unsigned int family, isc_netaddr_t *dst, struct sockaddr *src, + char *ifname) +{ + struct sockaddr_in6 *sa6; + +#if !defined(ISC_PLATFORM_HAVEIFNAMETOINDEX) || \ + !defined(ISC_PLATFORM_HAVESCOPEID) + UNUSED(ifname); +#endif + + /* clear any remaining value for safety */ + memset(dst, 0, sizeof(*dst)); + dst->family = family; switch (family) { case AF_INET: @@ -67,10 +81,57 @@ get_addr(unsigned int family, isc_netaddr_t *dst, struct sockaddr *src) { &((struct sockaddr_in *) src)->sin_addr, sizeof(struct in_addr)); break; - case AF_INET6: - memcpy(&dst->type.in6, - &((struct sockaddr_in6 *) src)->sin6_addr, + case AF_INET6: + sa6 = (struct sockaddr_in6 *)src; + memcpy(&dst->type.in6, &sa6->sin6_addr, sizeof(struct in6_addr)); +#ifdef ISC_PLATFORM_HAVESCOPEID + if (sa6->sin6_scope_id != 0) + isc_netaddr_setzone(dst, sa6->sin6_scope_id); + else { + /* + * BSD variants embed scope zone IDs in the 128bit + * address as a kernel internal form. Unfortunately, + * the embedded IDs are not hidden from applications + * when getting access to them by sysctl or ioctl. + * We convert the internal format to the pure address + * part and the zone ID part. + * Since multicast addresses should not appear here + * and they cannot be distinguished from netmasks, + * we only consider unicast link-local addresses. + */ + if (IN6_IS_ADDR_LINKLOCAL(&sa6->sin6_addr)) { + isc_uint16_t zone16; + + memcpy(&zone16, &sa6->sin6_addr.s6_addr[2], + sizeof(zone16)); + zone16 = ntohs(zone16); + if (zone16 != 0) { + /* the zone ID is embedded */ + isc_netaddr_setzone(dst, + (isc_uint32_t)zone16); + dst->type.in6.s6_addr[2] = 0; + dst->type.in6.s6_addr[3] = 0; +#ifdef ISC_PLATFORM_HAVEIFNAMETOINDEX + } else if (ifname != NULL) { + unsigned int zone; + + /* + * sin6_scope_id is still not provided, + * but the corresponding interface name + * is know. Use the interface ID as + * the link ID. + */ + zone = if_nametoindex(ifname); + if (zone != 0) { + isc_netaddr_setzone(dst, + (isc_uint32_t)zone); + } +#endif + } + } + } +#endif break; default: INSIST(0); @@ -82,7 +143,9 @@ get_addr(unsigned int family, isc_netaddr_t *dst, struct sockaddr *src) { * Include system-dependent code. */ -#if HAVE_IFLIST_SYSCTL +#if HAVE_GETIFADDRS +#include "ifiter_getifaddrs.c" +#elif HAVE_IFLIST_SYSCTL #include "ifiter_sysctl.c" #else #include "ifiter_ioctl.c" @@ -107,10 +170,7 @@ isc_interfaceiter_first(isc_interfaceiter_t *iter) { REQUIRE(VALID_IFITER(iter)); - iter->pos = 0; -#ifdef HAVE_TRUCLUSTER - iter->clua_context = 0; -#endif + internal_first(iter); for (;;) { result = internal_current(iter); if (result != ISC_R_IGNORE) @@ -151,7 +211,8 @@ isc_interfaceiter_destroy(isc_interfaceiter_t **iterp) REQUIRE(VALID_IFITER(iter)); internal_destroy(iter); - isc_mem_put(iter->mctx, iter->buf, iter->bufsize); + if (iter->buf != NULL) + isc_mem_put(iter->mctx, iter->buf, iter->bufsize); iter->magic = 0; isc_mem_put(iter->mctx, iter, sizeof(*iter)); |
