diff options
Diffstat (limited to 'contrib/bind9/bin/named/interfacemgr.c')
| -rw-r--r-- | contrib/bind9/bin/named/interfacemgr.c | 91 |
1 files changed, 79 insertions, 12 deletions
diff --git a/contrib/bind9/bin/named/interfacemgr.c b/contrib/bind9/bin/named/interfacemgr.c index a3410567e631..db410310147c 100644 --- a/contrib/bind9/bin/named/interfacemgr.c +++ b/contrib/bind9/bin/named/interfacemgr.c @@ -1,5 +1,5 @@ /* - * Copyright (C) 2004, 2006 Internet Systems Consortium, Inc. ("ISC") + * Copyright (C) 2004-2006 Internet Systems Consortium, Inc. ("ISC") * Copyright (C) 1999-2002 Internet Software Consortium. * * Permission to use, copy, modify, and distribute this software for any @@ -15,7 +15,9 @@ * PERFORMANCE OF THIS SOFTWARE. */ -/* $Id: interfacemgr.c,v 1.59.2.5.8.18 2006/07/19 00:16:28 marka Exp $ */ +/* $Id: interfacemgr.c,v 1.76.18.8 2006/07/20 01:10:30 marka Exp $ */ + +/*! \file */ #include <config.h> @@ -37,24 +39,29 @@ #define IFMGR_COMMON_LOGARGS \ ns_g_lctx, NS_LOGCATEGORY_NETWORK, NS_LOGMODULE_INTERFACEMGR +/*% nameserver interface manager structure */ struct ns_interfacemgr { - unsigned int magic; /* Magic number. */ + unsigned int magic; /*%< Magic number. */ int references; isc_mutex_t lock; - isc_mem_t * mctx; /* Memory context. */ - isc_taskmgr_t * taskmgr; /* Task manager. */ - isc_socketmgr_t * socketmgr; /* Socket manager. */ + isc_mem_t * mctx; /*%< Memory context. */ + isc_taskmgr_t * taskmgr; /*%< Task manager. */ + isc_socketmgr_t * socketmgr; /*%< Socket manager. */ dns_dispatchmgr_t * dispatchmgr; - unsigned int generation; /* Current generation no. */ + unsigned int generation; /*%< Current generation no. */ ns_listenlist_t * listenon4; ns_listenlist_t * listenon6; - dns_aclenv_t aclenv; /* Localhost/localnets ACLs */ - ISC_LIST(ns_interface_t) interfaces; /* List of interfaces. */ + dns_aclenv_t aclenv; /*%< Localhost/localnets ACLs */ + ISC_LIST(ns_interface_t) interfaces; /*%< List of interfaces. */ + ISC_LIST(isc_sockaddr_t) listenon; }; static void purge_old_interfaces(ns_interfacemgr_t *mgr); +static void +clearlistenon(ns_interfacemgr_t *mgr); + isc_result_t ns_interfacemgr_create(isc_mem_t *mctx, isc_taskmgr_t *taskmgr, isc_socketmgr_t *socketmgr, @@ -85,6 +92,7 @@ ns_interfacemgr_create(isc_mem_t *mctx, isc_taskmgr_t *taskmgr, mgr->listenon6 = NULL; ISC_LIST_INIT(mgr->interfaces); + ISC_LIST_INIT(mgr->listenon); /* * The listen-on lists are initially empty. @@ -117,6 +125,7 @@ ns_interfacemgr_destroy(ns_interfacemgr_t *mgr) { dns_aclenv_destroy(&mgr->aclenv); ns_listenlist_detach(&mgr->listenon4); ns_listenlist_detach(&mgr->listenon6); + clearlistenon(mgr); DESTROYLOCK(&mgr->lock); mgr->magic = 0; isc_mem_put(mgr->mctx, mgr, sizeof(*mgr)); @@ -158,7 +167,7 @@ void ns_interfacemgr_shutdown(ns_interfacemgr_t *mgr) { REQUIRE(NS_INTERFACEMGR_VALID(mgr)); - /* + /*% * Shut down and detach all interfaces. * By incrementing the generation count, we make purge_old_interfaces() * consider all interfaces "old". @@ -432,7 +441,7 @@ ns_interface_detach(ns_interface_t **targetp) { *targetp = NULL; } -/* +/*% * Search the interface list for an interface whose address and port * both match those of 'addr'. Return a pointer to it, or NULL if not found. */ @@ -447,7 +456,7 @@ find_matching_interface(ns_interfacemgr_t *mgr, isc_sockaddr_t *addr) { return (ifp); } -/* +/*% * Remove any interfaces whose generation number is not the current one. */ static void @@ -537,6 +546,43 @@ setup_locals(ns_interfacemgr_t *mgr, isc_interface_t *interface) { return (ISC_R_SUCCESS); } +static void +setup_listenon(ns_interfacemgr_t *mgr, isc_interface_t *interface, + in_port_t port) +{ + isc_sockaddr_t *addr; + isc_sockaddr_t *old; + + addr = isc_mem_get(mgr->mctx, sizeof(*addr)); + if (addr == NULL) + return; + + isc_sockaddr_fromnetaddr(addr, &interface->address, port); + + for (old = ISC_LIST_HEAD(mgr->listenon); + old != NULL; + old = ISC_LIST_NEXT(old, link)) + if (isc_sockaddr_equal(addr, old)) + break; + + if (old != NULL) + isc_mem_put(mgr->mctx, addr, sizeof(*addr)); + else + ISC_LIST_APPEND(mgr->listenon, addr, link); +} + +static void +clearlistenon(ns_interfacemgr_t *mgr) { + isc_sockaddr_t *old; + + old = ISC_LIST_HEAD(mgr->listenon); + while (old != NULL) { + ISC_LIST_UNLINK(mgr->listenon, old, link); + isc_mem_put(mgr->mctx, old, sizeof(*old)); + old = ISC_LIST_HEAD(mgr->listenon); + } +} + static isc_result_t do_scan(ns_interfacemgr_t *mgr, ns_listenlist_t *ext_listen, isc_boolean_t verbose) @@ -553,6 +599,7 @@ do_scan(ns_interfacemgr_t *mgr, ns_listenlist_t *ext_listen, isc_sockaddr_t listen_addr; ns_interface_t *ifp; isc_boolean_t log_explicit = ISC_FALSE; + isc_boolean_t dolistenon; if (ext_listen != NULL) adjusting = ISC_TRUE; @@ -643,6 +690,7 @@ do_scan(ns_interfacemgr_t *mgr, ns_listenlist_t *ext_listen, result = clearacl(mgr->mctx, &mgr->aclenv.localnets); if (result != ISC_R_SUCCESS) goto cleanup_iter; + clearlistenon(mgr); } for (result = isc_interfaceiter_first(iter); @@ -688,6 +736,7 @@ do_scan(ns_interfacemgr_t *mgr, ns_listenlist_t *ext_listen, } ll = (family == AF_INET) ? mgr->listenon4 : mgr->listenon6; + dolistenon = ISC_TRUE; for (le = ISC_LIST_HEAD(ll->elts); le != NULL; le = ISC_LIST_NEXT(le, link)) @@ -723,6 +772,11 @@ do_scan(ns_interfacemgr_t *mgr, ns_listenlist_t *ext_listen, if (match <= 0) continue; + if (adjusting == ISC_FALSE && dolistenon == ISC_TRUE) { + setup_listenon(mgr, &interface, le->port); + dolistenon = ISC_FALSE; + } + /* * The case of "any" IPv6 address will require * special considerations later, so remember it. @@ -909,3 +963,16 @@ ns_interfacemgr_dumprecursing(FILE *f, ns_interfacemgr_t *mgr) { } UNLOCK(&mgr->lock); } + +isc_boolean_t +ns_interfacemgr_listeningon(ns_interfacemgr_t *mgr, isc_sockaddr_t *addr) { + isc_sockaddr_t *old; + + old = ISC_LIST_HEAD(mgr->listenon); + for (old = ISC_LIST_HEAD(mgr->listenon); + old != NULL; + old = ISC_LIST_NEXT(old, link)) + if (isc_sockaddr_equal(old, addr)) + return (ISC_TRUE); + return (ISC_FALSE); +} |