diff options
Diffstat (limited to 'contrib/bind9/lib/isc/unix/ifiter_getifaddrs.c')
| -rw-r--r-- | contrib/bind9/lib/isc/unix/ifiter_getifaddrs.c | 234 |
1 files changed, 0 insertions, 234 deletions
diff --git a/contrib/bind9/lib/isc/unix/ifiter_getifaddrs.c b/contrib/bind9/lib/isc/unix/ifiter_getifaddrs.c deleted file mode 100644 index 637450a..0000000 --- a/contrib/bind9/lib/isc/unix/ifiter_getifaddrs.c +++ /dev/null @@ -1,234 +0,0 @@ -/* - * Copyright (C) 2004, 2005, 2007-2009 Internet Systems Consortium, Inc. ("ISC") - * Copyright (C) 2003 Internet Software Consortium. - * - * Permission to use, copy, modify, and/or 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 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: ifiter_getifaddrs.c,v 1.13 2009/09/24 23:48:13 tbox Exp $ */ - -/*! \file - * \brief - * Obtain the list of network interfaces using the getifaddrs(3) library. - */ - -#include <ifaddrs.h> - -/*% Iterator Magic */ -#define IFITER_MAGIC ISC_MAGIC('I', 'F', 'I', 'G') -/*% Valid Iterator */ -#define VALID_IFITER(t) ISC_MAGIC_VALID(t, IFITER_MAGIC) - -#ifdef __linux -static isc_boolean_t seenv6 = ISC_FALSE; -#endif - -/*% Iterator structure */ -struct isc_interfaceiter { - unsigned int magic; /*%< Magic number. */ - isc_mem_t *mctx; - void *buf; /*%< (unused) */ - unsigned int bufsize; /*%< (always 0) */ - struct ifaddrs *ifaddrs; /*%< List of ifaddrs */ - struct ifaddrs *pos; /*%< Ptr to current ifaddr */ - isc_interface_t current; /*%< Current interface data. */ - isc_result_t result; /*%< Last result code. */ -#ifdef __linux - FILE * proc; - char entry[ISC_IF_INET6_SZ]; - isc_result_t valid; -#endif -}; - -isc_result_t -isc_interfaceiter_create(isc_mem_t *mctx, isc_interfaceiter_t **iterp) { - isc_interfaceiter_t *iter; - isc_result_t result; - char strbuf[ISC_STRERRORSIZE]; - - REQUIRE(mctx != NULL); - REQUIRE(iterp != NULL); - REQUIRE(*iterp == NULL); - - iter = isc_mem_get(mctx, sizeof(*iter)); - if (iter == NULL) - return (ISC_R_NOMEMORY); - - iter->mctx = mctx; - iter->buf = NULL; - iter->bufsize = 0; - iter->ifaddrs = NULL; -#ifdef __linux - /* - * Only open "/proc/net/if_inet6" if we have never seen a IPv6 - * address returned by getifaddrs(). - */ - if (!seenv6) - iter->proc = fopen("/proc/net/if_inet6", "r"); - else - iter->proc = NULL; - iter->valid = ISC_R_FAILURE; -#endif - - if (getifaddrs(&iter->ifaddrs) < 0) { - isc__strerror(errno, strbuf, sizeof(strbuf)); - UNEXPECTED_ERROR(__FILE__, __LINE__, - isc_msgcat_get(isc_msgcat, - ISC_MSGSET_IFITERGETIFADDRS, - ISC_MSG_GETIFADDRS, - "getting interface " - "addresses: getifaddrs: %s"), - strbuf); - result = ISC_R_UNEXPECTED; - goto failure; - } - - /* - * A newly created iterator has an undefined position - * until isc_interfaceiter_first() is called. - */ - iter->pos = NULL; - iter->result = ISC_R_FAILURE; - - iter->magic = IFITER_MAGIC; - *iterp = iter; - return (ISC_R_SUCCESS); - - failure: -#ifdef __linux - if (iter->proc != NULL) - fclose(iter->proc); -#endif - if (iter->ifaddrs != NULL) /* just in case */ - freeifaddrs(iter->ifaddrs); - isc_mem_put(mctx, iter, sizeof(*iter)); - return (result); -} - -/* - * Get information about the current interface to iter->current. - * If successful, return ISC_R_SUCCESS. - * If the interface has an unsupported address family, - * return ISC_R_IGNORE. - */ - -static isc_result_t -internal_current(isc_interfaceiter_t *iter) { - struct ifaddrs *ifa; - int family; - unsigned int namelen; - - REQUIRE(VALID_IFITER(iter)); - - ifa = iter->pos; - -#ifdef __linux - if (iter->pos == NULL) - return (linux_if_inet6_current(iter)); -#endif - - INSIST(ifa != NULL); - INSIST(ifa->ifa_name != NULL); - - if (ifa->ifa_addr == NULL) - return (ISC_R_IGNORE); - - family = ifa->ifa_addr->sa_family; - if (family != AF_INET && family != AF_INET6) - return (ISC_R_IGNORE); - -#ifdef __linux - if (family == AF_INET6) - seenv6 = ISC_TRUE; -#endif - - memset(&iter->current, 0, sizeof(iter->current)); - - namelen = strlen(ifa->ifa_name); - if (namelen > sizeof(iter->current.name) - 1) - namelen = sizeof(iter->current.name) - 1; - - memset(iter->current.name, 0, sizeof(iter->current.name)); - memcpy(iter->current.name, ifa->ifa_name, namelen); - - iter->current.flags = 0; - - if ((ifa->ifa_flags & IFF_UP) != 0) - iter->current.flags |= INTERFACE_F_UP; - - if ((ifa->ifa_flags & IFF_POINTOPOINT) != 0) - iter->current.flags |= INTERFACE_F_POINTTOPOINT; - - if ((ifa->ifa_flags & IFF_LOOPBACK) != 0) - iter->current.flags |= INTERFACE_F_LOOPBACK; - - iter->current.af = family; - - get_addr(family, &iter->current.address, ifa->ifa_addr, ifa->ifa_name); - - if (ifa->ifa_netmask != NULL) - get_addr(family, &iter->current.netmask, ifa->ifa_netmask, - ifa->ifa_name); - - if (ifa->ifa_dstaddr != NULL && - (iter->current.flags & INTERFACE_F_POINTTOPOINT) != 0) - get_addr(family, &iter->current.dstaddress, ifa->ifa_dstaddr, - ifa->ifa_name); - - return (ISC_R_SUCCESS); -} - -/* - * Step the iterator to the next interface. Unlike - * isc_interfaceiter_next(), this may leave the iterator - * positioned on an interface that will ultimately - * be ignored. Return ISC_R_NOMORE if there are no more - * interfaces, otherwise ISC_R_SUCCESS. - */ -static isc_result_t -internal_next(isc_interfaceiter_t *iter) { - - if (iter->pos != NULL) - iter->pos = iter->pos->ifa_next; - if (iter->pos == NULL) { -#ifdef __linux - if (!seenv6) - return (linux_if_inet6_next(iter)); -#endif - return (ISC_R_NOMORE); - } - - return (ISC_R_SUCCESS); -} - -static void -internal_destroy(isc_interfaceiter_t *iter) { - -#ifdef __linux - if (iter->proc != NULL) - fclose(iter->proc); - iter->proc = NULL; -#endif - if (iter->ifaddrs) - freeifaddrs(iter->ifaddrs); - iter->ifaddrs = NULL; -} - -static -void internal_first(isc_interfaceiter_t *iter) { - -#ifdef __linux - linux_if_inet6_first(iter); -#endif - iter->pos = iter->ifaddrs; -} |
