diff options
Diffstat (limited to 'contrib/bind9/lib/dns/forward.c')
| -rw-r--r-- | contrib/bind9/lib/dns/forward.c | 215 |
1 files changed, 0 insertions, 215 deletions
diff --git a/contrib/bind9/lib/dns/forward.c b/contrib/bind9/lib/dns/forward.c deleted file mode 100644 index 7ec4e5c9debb..000000000000 --- a/contrib/bind9/lib/dns/forward.c +++ /dev/null @@ -1,215 +0,0 @@ -/* - * Copyright (C) 2004, 2005, 2007, 2009 Internet Systems Consortium, Inc. ("ISC") - * Copyright (C) 2000, 2001 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: forward.c,v 1.14 2009/09/02 23:48:02 tbox Exp $ */ - -/*! \file */ - -#include <config.h> - -#include <isc/magic.h> -#include <isc/mem.h> -#include <isc/rwlock.h> -#include <isc/sockaddr.h> -#include <isc/util.h> - -#include <dns/forward.h> -#include <dns/rbt.h> -#include <dns/result.h> -#include <dns/types.h> - -struct dns_fwdtable { - /* Unlocked. */ - unsigned int magic; - isc_mem_t *mctx; - isc_rwlock_t rwlock; - /* Locked by lock. */ - dns_rbt_t *table; -}; - -#define FWDTABLEMAGIC ISC_MAGIC('F', 'w', 'd', 'T') -#define VALID_FWDTABLE(ft) ISC_MAGIC_VALID(ft, FWDTABLEMAGIC) - -static void -auto_detach(void *, void *); - -isc_result_t -dns_fwdtable_create(isc_mem_t *mctx, dns_fwdtable_t **fwdtablep) { - dns_fwdtable_t *fwdtable; - isc_result_t result; - - REQUIRE(fwdtablep != NULL && *fwdtablep == NULL); - - fwdtable = isc_mem_get(mctx, sizeof(dns_fwdtable_t)); - if (fwdtable == NULL) - return (ISC_R_NOMEMORY); - - fwdtable->table = NULL; - result = dns_rbt_create(mctx, auto_detach, fwdtable, &fwdtable->table); - if (result != ISC_R_SUCCESS) - goto cleanup_fwdtable; - - result = isc_rwlock_init(&fwdtable->rwlock, 0, 0); - if (result != ISC_R_SUCCESS) - goto cleanup_rbt; - - fwdtable->mctx = NULL; - isc_mem_attach(mctx, &fwdtable->mctx); - fwdtable->magic = FWDTABLEMAGIC; - *fwdtablep = fwdtable; - - return (ISC_R_SUCCESS); - - cleanup_rbt: - dns_rbt_destroy(&fwdtable->table); - - cleanup_fwdtable: - isc_mem_put(mctx, fwdtable, sizeof(dns_fwdtable_t)); - - return (result); -} - -isc_result_t -dns_fwdtable_add(dns_fwdtable_t *fwdtable, dns_name_t *name, - isc_sockaddrlist_t *addrs, dns_fwdpolicy_t fwdpolicy) -{ - isc_result_t result; - dns_forwarders_t *forwarders; - isc_sockaddr_t *sa, *nsa; - - REQUIRE(VALID_FWDTABLE(fwdtable)); - - forwarders = isc_mem_get(fwdtable->mctx, sizeof(dns_forwarders_t)); - if (forwarders == NULL) - return (ISC_R_NOMEMORY); - - ISC_LIST_INIT(forwarders->addrs); - for (sa = ISC_LIST_HEAD(*addrs); - sa != NULL; - sa = ISC_LIST_NEXT(sa, link)) - { - nsa = isc_mem_get(fwdtable->mctx, sizeof(isc_sockaddr_t)); - if (nsa == NULL) { - result = ISC_R_NOMEMORY; - goto cleanup; - } - *nsa = *sa; - ISC_LINK_INIT(nsa, link); - ISC_LIST_APPEND(forwarders->addrs, nsa, link); - } - forwarders->fwdpolicy = fwdpolicy; - - RWLOCK(&fwdtable->rwlock, isc_rwlocktype_write); - result = dns_rbt_addname(fwdtable->table, name, forwarders); - RWUNLOCK(&fwdtable->rwlock, isc_rwlocktype_write); - - if (result != ISC_R_SUCCESS) - goto cleanup; - - return (ISC_R_SUCCESS); - - cleanup: - while (!ISC_LIST_EMPTY(forwarders->addrs)) { - sa = ISC_LIST_HEAD(forwarders->addrs); - ISC_LIST_UNLINK(forwarders->addrs, sa, link); - isc_mem_put(fwdtable->mctx, sa, sizeof(isc_sockaddr_t)); - } - isc_mem_put(fwdtable->mctx, forwarders, sizeof(dns_forwarders_t)); - return (result); -} - -isc_result_t -dns_fwdtable_delete(dns_fwdtable_t *fwdtable, dns_name_t *name) { - isc_result_t result; - - REQUIRE(VALID_FWDTABLE(fwdtable)); - - RWLOCK(&fwdtable->rwlock, isc_rwlocktype_write); - result = dns_rbt_deletename(fwdtable->table, name, ISC_FALSE); - RWUNLOCK(&fwdtable->rwlock, isc_rwlocktype_write); - - if (result == DNS_R_PARTIALMATCH) - result = ISC_R_NOTFOUND; - - return (result); -} - -isc_result_t -dns_fwdtable_find(dns_fwdtable_t *fwdtable, dns_name_t *name, - dns_forwarders_t **forwardersp) -{ - return (dns_fwdtable_find2(fwdtable, name, NULL, forwardersp)); -} - -isc_result_t -dns_fwdtable_find2(dns_fwdtable_t *fwdtable, dns_name_t *name, - dns_name_t *foundname, dns_forwarders_t **forwardersp) -{ - isc_result_t result; - - REQUIRE(VALID_FWDTABLE(fwdtable)); - - RWLOCK(&fwdtable->rwlock, isc_rwlocktype_read); - - result = dns_rbt_findname(fwdtable->table, name, 0, foundname, - (void **)forwardersp); - if (result == DNS_R_PARTIALMATCH) - result = ISC_R_SUCCESS; - - RWUNLOCK(&fwdtable->rwlock, isc_rwlocktype_read); - - return (result); -} - -void -dns_fwdtable_destroy(dns_fwdtable_t **fwdtablep) { - dns_fwdtable_t *fwdtable; - isc_mem_t *mctx; - - REQUIRE(fwdtablep != NULL && VALID_FWDTABLE(*fwdtablep)); - - fwdtable = *fwdtablep; - - dns_rbt_destroy(&fwdtable->table); - isc_rwlock_destroy(&fwdtable->rwlock); - fwdtable->magic = 0; - mctx = fwdtable->mctx; - isc_mem_put(mctx, fwdtable, sizeof(dns_fwdtable_t)); - isc_mem_detach(&mctx); - - *fwdtablep = NULL; -} - -/*** - *** Private - ***/ - -static void -auto_detach(void *data, void *arg) { - dns_forwarders_t *forwarders = data; - dns_fwdtable_t *fwdtable = arg; - isc_sockaddr_t *sa; - - UNUSED(arg); - - while (!ISC_LIST_EMPTY(forwarders->addrs)) { - sa = ISC_LIST_HEAD(forwarders->addrs); - ISC_LIST_UNLINK(forwarders->addrs, sa, link); - isc_mem_put(fwdtable->mctx, sa, sizeof(isc_sockaddr_t)); - } - isc_mem_put(fwdtable->mctx, forwarders, sizeof(dns_forwarders_t)); -} |