160 lines
3.7 KiB
C
160 lines
3.7 KiB
C
/*
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* Copyright (C) 1999-2001 Internet Software Consortium.
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM
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* DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL
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* INTERNET SOFTWARE CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT,
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* INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING
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* FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
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* NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
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* WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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/* $Id: interfaceiter.c,v 1.27 2002/07/02 05:51:43 marka Exp $ */
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#include <config.h>
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#include <sys/types.h>
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#include <sys/ioctl.h>
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#ifdef HAVE_SYS_SOCKIO_H
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#include <sys/sockio.h> /* Required for ifiter_ioctl.c. */
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#endif
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <errno.h>
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#include <isc/interfaceiter.h>
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#include <isc/magic.h>
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#include <isc/mem.h>
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#include <isc/msgs.h>
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#include <isc/net.h>
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#include <isc/result.h>
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#include <isc/strerror.h>
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#include <isc/string.h>
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#include <isc/types.h>
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#include <isc/util.h>
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/* Must follow <isc/net.h>. */
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#ifdef HAVE_NET_IF6_H
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#include <net/if6.h>
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#endif
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#include <net/if.h>
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/* Common utility functions */
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/*
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* Extract the network address part from a "struct sockaddr".
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*
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* The address family is given explicity
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* instead of using src->sa_family, because the latter does not work
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* for copying a network mask obtained by SIOCGIFNETMASK (it does
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* not have a valid address family).
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*/
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static void
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get_addr(unsigned int family, isc_netaddr_t *dst, struct sockaddr *src) {
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dst->family = family;
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switch (family) {
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case AF_INET:
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memcpy(&dst->type.in,
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&((struct sockaddr_in *) src)->sin_addr,
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sizeof(struct in_addr));
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break;
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case AF_INET6:
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memcpy(&dst->type.in6,
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&((struct sockaddr_in6 *) src)->sin6_addr,
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sizeof(struct in6_addr));
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break;
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default:
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INSIST(0);
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break;
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}
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}
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/*
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* Include system-dependent code.
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*/
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#if HAVE_IFLIST_SYSCTL
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#include "ifiter_sysctl.c"
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#else
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#include "ifiter_ioctl.c"
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#endif
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/*
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* The remaining code is common to the sysctl and ioctl case.
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*/
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isc_result_t
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isc_interfaceiter_current(isc_interfaceiter_t *iter,
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isc_interface_t *ifdata)
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{
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REQUIRE(iter->result == ISC_R_SUCCESS);
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memcpy(ifdata, &iter->current, sizeof(*ifdata));
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return (ISC_R_SUCCESS);
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}
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isc_result_t
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isc_interfaceiter_first(isc_interfaceiter_t *iter) {
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isc_result_t result;
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REQUIRE(VALID_IFITER(iter));
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iter->pos = 0;
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#ifdef HAVE_TRUCLUSTER
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iter->clua_context = 0;
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#endif
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for (;;) {
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result = internal_current(iter);
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if (result != ISC_R_IGNORE)
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break;
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result = internal_next(iter);
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if (result != ISC_R_SUCCESS)
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break;
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}
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iter->result = result;
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return (result);
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}
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isc_result_t
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isc_interfaceiter_next(isc_interfaceiter_t *iter) {
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isc_result_t result;
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REQUIRE(VALID_IFITER(iter));
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REQUIRE(iter->result == ISC_R_SUCCESS);
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for (;;) {
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result = internal_next(iter);
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if (result != ISC_R_SUCCESS)
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break;
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result = internal_current(iter);
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if (result != ISC_R_IGNORE)
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break;
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}
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iter->result = result;
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return (result);
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}
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void
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isc_interfaceiter_destroy(isc_interfaceiter_t **iterp)
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{
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isc_interfaceiter_t *iter;
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REQUIRE(iterp != NULL);
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iter = *iterp;
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REQUIRE(VALID_IFITER(iter));
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internal_destroy(iter);
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isc_mem_put(iter->mctx, iter->buf, iter->bufsize);
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iter->magic = 0;
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isc_mem_put(iter->mctx, iter, sizeof(*iter));
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*iterp = NULL;
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}
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