static void xfrout_ctx_destroy(xfrout_ctx_t **xfrp) { xfrout_ctx_t *xfr = *xfrp; ns_client_t *client = NULL; INSIST(xfr->sends == 0); xfr->client->shutdown = NULL; xfr->client->shutdown_arg = NULL; if (xfr->stream != NULL) xfr->stream->methods->destroy(&xfr->stream); if (xfr->buf.base != NULL) isc_mem_put(xfr->mctx, xfr->buf.base, xfr->buf.length); if (xfr->txmem != NULL) isc_mem_put(xfr->mctx, xfr->txmem, xfr->txmemlen); if (xfr->lasttsig != NULL) isc_buffer_free(&xfr->lasttsig); if (xfr->quota != NULL) isc_quota_detach(&xfr->quota); if (xfr->ver != NULL) dns_db_closeversion(xfr->db, &xfr->ver, ISC_FALSE); if (xfr->zone != NULL) dns_zone_detach(&xfr->zone); if (xfr->db != NULL) dns_db_detach(&xfr->db); /* * We want to detch the client after we have released the memory * context as ns_client_detach checks the memory reference count. */ ns_client_attach(xfr->client, &client); ns_client_detach(&xfr->client); isc_mem_putanddetach(&xfr->mctx, xfr, sizeof(*xfr)); ns_client_detach(&client); *xfrp = NULL; }
isc_result_t isc_ht_init(isc_ht_t **htp, isc_mem_t *mctx, isc_uint8_t bits) { isc_ht_t *ht = NULL; size_t i; REQUIRE(htp != NULL && *htp == NULL); REQUIRE(mctx != NULL); REQUIRE(bits >= 1 && bits <= (sizeof(size_t)*8 - 1)); ht = isc_mem_get(mctx, sizeof(struct isc_ht)); if (ht == NULL) { return (ISC_R_NOMEMORY); } ht->mctx = NULL; isc_mem_attach(mctx, &ht->mctx); ht->size = ((size_t)1<<bits); ht->mask = ((size_t)1<<bits)-1; ht->count = 0; ht->table = isc_mem_get(ht->mctx, ht->size * sizeof(isc_ht_node_t*)); if (ht->table == NULL) { isc_mem_putanddetach(&ht->mctx, ht, sizeof(struct isc_ht)); return (ISC_R_NOMEMORY); } for (i = 0; i < ht->size; i++) { ht->table[i] = NULL; } ht->magic = ISC_HT_MAGIC; *htp = ht; return (ISC_R_SUCCESS); }
isc_result_t ns_interfacemgr_create(isc_mem_t *mctx, isc_taskmgr_t *taskmgr, isc_socketmgr_t *socketmgr, dns_dispatchmgr_t *dispatchmgr, isc_task_t *task, ns_interfacemgr_t **mgrp) { isc_result_t result; ns_interfacemgr_t *mgr; #ifndef USE_ROUTE_SOCKET UNUSED(task); #endif REQUIRE(mctx != NULL); REQUIRE(mgrp != NULL); REQUIRE(*mgrp == NULL); mgr = isc_mem_get(mctx, sizeof(*mgr)); if (mgr == NULL) return (ISC_R_NOMEMORY); mgr->mctx = NULL; isc_mem_attach(mctx, &mgr->mctx); result = isc_mutex_init(&mgr->lock); if (result != ISC_R_SUCCESS) goto cleanup_mem; mgr->taskmgr = taskmgr; mgr->socketmgr = socketmgr; mgr->dispatchmgr = dispatchmgr; mgr->generation = 1; mgr->listenon4 = NULL; mgr->listenon6 = NULL; ISC_LIST_INIT(mgr->interfaces); ISC_LIST_INIT(mgr->listenon); /* * The listen-on lists are initially empty. */ result = ns_listenlist_create(mctx, &mgr->listenon4); if (result != ISC_R_SUCCESS) goto cleanup_mem; ns_listenlist_attach(mgr->listenon4, &mgr->listenon6); result = dns_aclenv_init(mctx, &mgr->aclenv); if (result != ISC_R_SUCCESS) goto cleanup_listenon; #ifdef HAVE_GEOIP mgr->aclenv.geoip = ns_g_geoip; #endif #ifdef USE_ROUTE_SOCKET mgr->route = NULL; result = isc_socket_create(mgr->socketmgr, ROUTE_SOCKET_PROTOCOL, isc_sockettype_raw, &mgr->route); switch (result) { case ISC_R_NOPERM: case ISC_R_SUCCESS: case ISC_R_NOTIMPLEMENTED: case ISC_R_FAMILYNOSUPPORT: break; default: goto cleanup_aclenv; } mgr->task = NULL; if (mgr->route != NULL) isc_task_attach(task, &mgr->task); mgr->references = (mgr->route != NULL) ? 2 : 1; #else mgr->references = 1; #endif mgr->magic = IFMGR_MAGIC; *mgrp = mgr; #ifdef USE_ROUTE_SOCKET if (mgr->route != NULL) { isc_region_t r = { mgr->buf, sizeof(mgr->buf) }; result = isc_socket_recv(mgr->route, &r, 1, mgr->task, route_event, mgr); if (result != ISC_R_SUCCESS) { isc_task_detach(&mgr->task); isc_socket_detach(&mgr->route); ns_interfacemgr_detach(&mgr); } } #endif return (ISC_R_SUCCESS); #ifdef USE_ROUTE_SOCKET cleanup_aclenv: dns_aclenv_destroy(&mgr->aclenv); #endif cleanup_listenon: ns_listenlist_detach(&mgr->listenon4); ns_listenlist_detach(&mgr->listenon6); cleanup_mem: isc_mem_putanddetach(&mgr->mctx, mgr, sizeof(*mgr)); return (result); }
isc_result_t dns_view_create(isc_mem_t *mctx, dns_rdataclass_t rdclass, const char *name, dns_view_t **viewp) { dns_view_t *view; isc_result_t result; /* * Create a view. */ REQUIRE(name != NULL); REQUIRE(viewp != NULL && *viewp == NULL); view = isc_mem_get(mctx, sizeof(*view)); if (view == NULL) return (ISC_R_NOMEMORY); view->mctx = NULL; isc_mem_attach(mctx, &view->mctx); view->name = isc_mem_strdup(mctx, name); if (view->name == NULL) { result = ISC_R_NOMEMORY; goto cleanup_view; } result = isc_mutex_init(&view->lock); if (result != ISC_R_SUCCESS) goto cleanup_name; view->zonetable = NULL; if (isc_bind9) { result = dns_zt_create(mctx, rdclass, &view->zonetable); if (result != ISC_R_SUCCESS) { UNEXPECTED_ERROR(__FILE__, __LINE__, "dns_zt_create() failed: %s", isc_result_totext(result)); result = ISC_R_UNEXPECTED; goto cleanup_mutex; } } view->secroots_priv = NULL; view->fwdtable = NULL; result = dns_fwdtable_create(mctx, &view->fwdtable); if (result != ISC_R_SUCCESS) { UNEXPECTED_ERROR(__FILE__, __LINE__, "dns_fwdtable_create() failed: %s", isc_result_totext(result)); result = ISC_R_UNEXPECTED; goto cleanup_zt; } view->acache = NULL; view->cache = NULL; view->cachedb = NULL; ISC_LIST_INIT(view->dlz_searched); ISC_LIST_INIT(view->dlz_unsearched); view->hints = NULL; view->resolver = NULL; view->adb = NULL; view->requestmgr = NULL; view->rdclass = rdclass; view->frozen = ISC_FALSE; view->task = NULL; result = isc_refcount_init(&view->references, 1); if (result != ISC_R_SUCCESS) goto cleanup_fwdtable; view->weakrefs = 0; view->attributes = (DNS_VIEWATTR_RESSHUTDOWN|DNS_VIEWATTR_ADBSHUTDOWN| DNS_VIEWATTR_REQSHUTDOWN); view->statickeys = NULL; view->dynamickeys = NULL; view->matchclients = NULL; view->matchdestinations = NULL; view->matchrecursiveonly = ISC_FALSE; result = dns_tsigkeyring_create(view->mctx, &view->dynamickeys); if (result != ISC_R_SUCCESS) goto cleanup_references; view->peers = NULL; view->order = NULL; view->delonly = NULL; view->rootdelonly = ISC_FALSE; view->rootexclude = NULL; view->adbstats = NULL; view->resstats = NULL; view->resquerystats = NULL; view->cacheshared = ISC_FALSE; ISC_LIST_INIT(view->dns64); view->dns64cnt = 0; /* * Initialize configuration data with default values. */ view->recursion = ISC_TRUE; view->auth_nxdomain = ISC_FALSE; /* Was true in BIND 8 */ view->additionalfromcache = ISC_TRUE; view->additionalfromauth = ISC_TRUE; view->enablednssec = ISC_TRUE; view->enablevalidation = ISC_TRUE; view->acceptexpired = ISC_FALSE; view->minimalresponses = ISC_FALSE; view->transfer_format = dns_one_answer; view->cacheacl = NULL; view->cacheonacl = NULL; view->queryacl = NULL; view->queryonacl = NULL; view->recursionacl = NULL; view->recursiononacl = NULL; view->sortlist = NULL; view->transferacl = NULL; view->notifyacl = NULL; view->updateacl = NULL; view->upfwdacl = NULL; view->denyansweracl = NULL; view->nocasecompress = NULL; view->answeracl_exclude = NULL; view->denyanswernames = NULL; view->answernames_exclude = NULL; view->rrl = NULL; view->provideixfr = ISC_TRUE; view->maxcachettl = 7 * 24 * 3600; view->maxncachettl = 3 * 3600; view->dstport = 53; view->preferred_glue = 0; view->flush = ISC_FALSE; view->dlv = NULL; view->maxudp = 0; view->situdp = 0; view->maxbits = 0; view->v4_aaaa = dns_aaaa_ok; view->v6_aaaa = dns_aaaa_ok; view->aaaa_acl = NULL; view->rpzs = NULL; dns_fixedname_init(&view->dlv_fixed); view->managed_keys = NULL; view->redirect = NULL; view->requestnsid = ISC_FALSE; view->requestsit = ISC_TRUE; view->new_zone_file = NULL; view->new_zone_config = NULL; view->cfg_destroy = NULL; if (isc_bind9) { result = dns_order_create(view->mctx, &view->order); if (result != ISC_R_SUCCESS) goto cleanup_dynkeys; } result = dns_peerlist_new(view->mctx, &view->peers); if (result != ISC_R_SUCCESS) goto cleanup_order; result = dns_aclenv_init(view->mctx, &view->aclenv); if (result != ISC_R_SUCCESS) goto cleanup_peerlist; ISC_LINK_INIT(view, link); ISC_EVENT_INIT(&view->resevent, sizeof(view->resevent), 0, NULL, DNS_EVENT_VIEWRESSHUTDOWN, resolver_shutdown, view, NULL, NULL, NULL); ISC_EVENT_INIT(&view->adbevent, sizeof(view->adbevent), 0, NULL, DNS_EVENT_VIEWADBSHUTDOWN, adb_shutdown, view, NULL, NULL, NULL); ISC_EVENT_INIT(&view->reqevent, sizeof(view->reqevent), 0, NULL, DNS_EVENT_VIEWREQSHUTDOWN, req_shutdown, view, NULL, NULL, NULL); view->viewlist = NULL; view->magic = DNS_VIEW_MAGIC; *viewp = view; return (ISC_R_SUCCESS); cleanup_peerlist: if (view->peers != NULL) dns_peerlist_detach(&view->peers); cleanup_order: if (view->order != NULL) dns_order_detach(&view->order); cleanup_dynkeys: if (view->dynamickeys != NULL) dns_tsigkeyring_detach(&view->dynamickeys); cleanup_references: isc_refcount_destroy(&view->references); cleanup_fwdtable: if (view->fwdtable != NULL) dns_fwdtable_destroy(&view->fwdtable); cleanup_zt: if (view->zonetable != NULL) dns_zt_detach(&view->zonetable); cleanup_mutex: DESTROYLOCK(&view->lock); cleanup_name: isc_mem_free(mctx, view->name); cleanup_view: isc_mem_putanddetach(&view->mctx, view, sizeof(*view)); return (result); }
static void destroyring(dns_tsig_keyring_t *ring) { dns_rbt_destroy(&ring->keys); isc_rwlock_destroy(&ring->lock); isc_mem_putanddetach(&ring->mctx, ring, sizeof(dns_tsig_keyring_t)); }
isc_result_t irs_context_create(irs_context_t **contextp) { isc_result_t result; irs_context_t *context; isc_appctx_t *actx = NULL; isc_mem_t *mctx = NULL; isc_taskmgr_t *taskmgr = NULL; isc_socketmgr_t *socketmgr = NULL; isc_timermgr_t *timermgr = NULL; dns_client_t *client = NULL; isc_sockaddrlist_t *nameservers; irs_dnsconf_dnskeylist_t *trustedkeys; irs_dnsconf_dnskey_t *trustedkey; isc_lib_register(); result = dns_lib_init(); if (result != ISC_R_SUCCESS) return (result); result = ctxs_init(&mctx, &actx, &taskmgr, &socketmgr, &timermgr); if (result != ISC_R_SUCCESS) return (result); result = isc_app_ctxstart(actx); if (result != ISC_R_SUCCESS) { ctxs_destroy(&mctx, &actx, &taskmgr, &socketmgr, &timermgr); return (result); } context = isc_mem_get(mctx, sizeof(*context)); if (context == NULL) { ctxs_destroy(&mctx, &actx, &taskmgr, &socketmgr, &timermgr); return (ISC_R_NOMEMORY); } context->mctx = mctx; context->actx = actx; context->taskmgr = taskmgr; context->socketmgr = socketmgr; context->timermgr = timermgr; context->resconf = NULL; context->dnsconf = NULL; context->task = NULL; result = isc_task_create(taskmgr, 0, &context->task); if (result != ISC_R_SUCCESS) goto fail; /* Create a DNS client object */ result = dns_client_createx(mctx, actx, taskmgr, socketmgr, timermgr, 0, &client); if (result != ISC_R_SUCCESS) goto fail; context->dnsclient = client; /* Read resolver configuration file */ result = irs_resconf_load(mctx, RESOLV_CONF, &context->resconf); if (result != ISC_R_SUCCESS) goto fail; /* Set nameservers */ nameservers = irs_resconf_getnameservers(context->resconf); result = dns_client_setservers(client, dns_rdataclass_in, NULL, nameservers); if (result != ISC_R_SUCCESS) goto fail; /* Read advanced DNS configuration (if any) */ result = irs_dnsconf_load(mctx, DNS_CONF, &context->dnsconf); if (result != ISC_R_SUCCESS) goto fail; trustedkeys = irs_dnsconf_gettrustedkeys(context->dnsconf); for (trustedkey = ISC_LIST_HEAD(*trustedkeys); trustedkey != NULL; trustedkey = ISC_LIST_NEXT(trustedkey, link)) { result = dns_client_addtrustedkey(client, dns_rdataclass_in, trustedkey->keyname, trustedkey->keydatabuf); if (result != ISC_R_SUCCESS) goto fail; } context->magic = IRS_CONTEXT_MAGIC; *contextp = context; return (ISC_R_SUCCESS); fail: if (context->task != NULL) isc_task_detach(&context->task); if (context->resconf != NULL) irs_resconf_destroy(&context->resconf); if (context->dnsconf != NULL) irs_dnsconf_destroy(&context->dnsconf); if (client != NULL) dns_client_destroy(&client); ctxs_destroy(NULL, &actx, &taskmgr, &socketmgr, &timermgr); isc_mem_putanddetach(&mctx, context, sizeof(*context)); return (result); }
/* * Driver-specific implementation of dns_db_create(). * * @param[in] argv Database-specific parameters from dns_db_create(). * @param[in] driverarg Driver-specific parameter from dns_db_register(). */ isc_result_t create_db(isc_mem_t *mctx, const dns_name_t *origin, dns_dbtype_t type, dns_rdataclass_t rdclass, unsigned int argc, char *argv[], void *driverarg, dns_db_t **dbp) { sampledb_t *sampledb = NULL; isc_result_t result; dns_dbversion_t *version = NULL; struct in_addr a_addr; REQUIRE(type == dns_dbtype_zone); REQUIRE(rdclass == dns_rdataclass_in); REQUIRE(argc == 0); REQUIRE(argv != NULL); REQUIRE(driverarg != NULL); /* pointer to driver instance */ REQUIRE(dbp != NULL && *dbp == NULL); UNUSED(driverarg); /* no driver-specific configuration */ a_addr.s_addr = 0x0100007fU; CHECKED_MEM_GET_PTR(mctx, sampledb); ZERO_PTR(sampledb); isc_mem_attach(mctx, &sampledb->common.mctx); dns_name_init(&sampledb->common.origin, NULL); isc_ondestroy_init(&sampledb->common.ondest); sampledb->common.magic = DNS_DB_MAGIC; sampledb->common.impmagic = SAMPLEDB_MAGIC; sampledb->common.methods = &sampledb_methods; sampledb->common.attributes = 0; sampledb->common.rdclass = rdclass; CHECK(dns_name_dupwithoffsets(origin, mctx, &sampledb->common.origin)); CHECK(isc_refcount_init(&sampledb->refs, 1)); /* Translate instance name to instance pointer. */ sampledb->inst = driverarg; /* Create internal instance of RBT DB implementation from BIND. */ CHECK(dns_db_create(mctx, "rbt", origin, dns_dbtype_zone, dns_rdataclass_in, 0, NULL, &sampledb->rbtdb)); /* Create fake SOA, NS, and A records to make database loadable. */ CHECK(dns_db_newversion(sampledb->rbtdb, &version)); CHECK(add_soa(sampledb->rbtdb, version, origin, origin, origin)); CHECK(add_ns(sampledb->rbtdb, version, origin, origin)); CHECK(add_a(sampledb->rbtdb, version, origin, a_addr)); dns_db_closeversion(sampledb->rbtdb, &version, ISC_TRUE); *dbp = (dns_db_t *)sampledb; return (ISC_R_SUCCESS); cleanup: if (sampledb != NULL) { if (dns_name_dynamic(&sampledb->common.origin)) dns_name_free(&sampledb->common.origin, mctx); isc_mem_putanddetach(&sampledb->common.mctx, sampledb, sizeof(*sampledb)); } return (result); }
static isc_result_t add_listener(ns_server_t *server, ns_statschannel_t **listenerp, const cfg_obj_t *listen_params, const cfg_obj_t *config, isc_sockaddr_t *addr, cfg_aclconfctx_t *aclconfctx, const char *socktext) { isc_result_t result; ns_statschannel_t *listener; isc_task_t *task = NULL; isc_socket_t *sock = NULL; const cfg_obj_t *allow; dns_acl_t *new_acl = NULL; listener = isc_mem_get(server->mctx, sizeof(*listener)); if (listener == NULL) return (ISC_R_NOMEMORY); listener->httpdmgr = NULL; listener->address = *addr; listener->acl = NULL; listener->mctx = NULL; ISC_LINK_INIT(listener, link); result = isc_mutex_init(&listener->lock); if (result != ISC_R_SUCCESS) { isc_mem_put(server->mctx, listener, sizeof(*listener)); return (ISC_R_FAILURE); } isc_mem_attach(server->mctx, &listener->mctx); allow = cfg_tuple_get(listen_params, "allow"); if (allow != NULL && cfg_obj_islist(allow)) { result = cfg_acl_fromconfig(allow, config, ns_g_lctx, aclconfctx, listener->mctx, 0, &new_acl); } else result = dns_acl_any(listener->mctx, &new_acl); if (result != ISC_R_SUCCESS) goto cleanup; dns_acl_attach(new_acl, &listener->acl); dns_acl_detach(&new_acl); result = isc_task_create(ns_g_taskmgr, 0, &task); if (result != ISC_R_SUCCESS) goto cleanup; isc_task_setname(task, "statchannel", NULL); result = isc_socket_create(ns_g_socketmgr, isc_sockaddr_pf(addr), isc_sockettype_tcp, &sock); if (result != ISC_R_SUCCESS) goto cleanup; isc_socket_setname(sock, "statchannel", NULL); #ifndef ISC_ALLOW_MAPPED isc_socket_ipv6only(sock, ISC_TRUE); #endif result = isc_socket_bind(sock, addr, ISC_SOCKET_REUSEADDRESS); if (result != ISC_R_SUCCESS) goto cleanup; result = isc_httpdmgr_create(server->mctx, sock, task, client_ok, destroy_listener, listener, ns_g_timermgr, &listener->httpdmgr); if (result != ISC_R_SUCCESS) goto cleanup; #ifdef HAVE_LIBXML2 isc_httpdmgr_addurl(listener->httpdmgr, "/", render_index, server); #endif isc_httpdmgr_addurl(listener->httpdmgr, "/bind9.xsl", render_xsl, server); *listenerp = listener; isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL, NS_LOGMODULE_SERVER, ISC_LOG_NOTICE, "statistics channel listening on %s", socktext); cleanup: if (result != ISC_R_SUCCESS) { if (listener->acl != NULL) dns_acl_detach(&listener->acl); DESTROYLOCK(&listener->lock); isc_mem_putanddetach(&listener->mctx, listener, sizeof(*listener)); } if (task != NULL) isc_task_detach(&task); if (sock != NULL) isc_socket_detach(&sock); return (result); }
isc_result_t dns_lookup_create(isc_mem_t *mctx, dns_name_t *name, dns_rdatatype_t type, dns_view_t *view, unsigned int options, isc_task_t *task, isc_taskaction_t action, void *arg, dns_lookup_t **lookupp) { isc_result_t result; dns_lookup_t *lookup; isc_event_t *ievent; lookup = isc_mem_get(mctx, sizeof(*lookup)); if (lookup == NULL) return (ISC_R_NOMEMORY); lookup->mctx = NULL; isc_mem_attach(mctx, &lookup->mctx); lookup->options = options; ievent = isc_event_allocate(mctx, lookup, DNS_EVENT_LOOKUPDONE, action, arg, sizeof(*lookup->event)); if (ievent == NULL) { result = ISC_R_NOMEMORY; goto cleanup_lookup; } lookup->event = (dns_lookupevent_t *)ievent; lookup->event->ev_destroy = levent_destroy; lookup->event->ev_destroy_arg = mctx; lookup->event->result = ISC_R_FAILURE; lookup->event->name = NULL; lookup->event->rdataset = NULL; lookup->event->sigrdataset = NULL; lookup->event->db = NULL; lookup->event->node = NULL; lookup->task = NULL; isc_task_attach(task, &lookup->task); result = isc_mutex_init(&lookup->lock); if (result != ISC_R_SUCCESS) goto cleanup_event; dns_fixedname_init(&lookup->name); result = dns_name_copy(name, dns_fixedname_name(&lookup->name), NULL); if (result != ISC_R_SUCCESS) goto cleanup_lock; lookup->type = type; lookup->view = NULL; dns_view_attach(view, &lookup->view); lookup->fetch = NULL; lookup->restarts = 0; lookup->canceled = ISC_FALSE; dns_rdataset_init(&lookup->rdataset); dns_rdataset_init(&lookup->sigrdataset); lookup->magic = LOOKUP_MAGIC; *lookupp = lookup; lookup_find(lookup, NULL); return (ISC_R_SUCCESS); cleanup_lock: DESTROYLOCK(&lookup->lock); cleanup_event: ievent = (isc_event_t *)lookup->event; isc_event_free(&ievent); lookup->event = NULL; isc_task_detach(&lookup->task); cleanup_lookup: isc_mem_putanddetach(&mctx, lookup, sizeof(*lookup)); return (result); }