1 files changed, 0 insertions, 497 deletions

diff --git a/contrib/bind9/lib/dns/lookup.c b/contrib/bind9/lib/dns/lookup.c
deleted file mode 100644
index a3ddad4..0000000
--- a/contrib/bind9/lib/dns/lookup.c
+++ /dev/null
@@ -1,497 +0,0 @@
-/*
- * Copyright (C) 2004, 2005, 2007  Internet Systems Consortium, Inc. ("ISC")
- * Copyright (C) 2000, 2001, 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: lookup.c,v 1.14.18.7 2007/08/28 07:20:04 tbox Exp $ */
-
-/*! \file */
-
-#include <config.h>
-
-#include <isc/mem.h>
-#include <isc/netaddr.h>
-#include <isc/string.h>		/* Required for HP/UX (and others?) */
-#include <isc/task.h>
-#include <isc/util.h>
-
-#include <dns/db.h>
-#include <dns/events.h>
-#include <dns/lookup.h>
-#include <dns/rdata.h>
-#include <dns/rdataset.h>
-#include <dns/rdatastruct.h>
-#include <dns/resolver.h>
-#include <dns/result.h>
-#include <dns/view.h>
-
-struct dns_lookup {
-	/* Unlocked. */
-	unsigned int		magic;
-	isc_mem_t *		mctx;
-	isc_mutex_t		lock;
-	dns_rdatatype_t		type;
-	dns_fixedname_t		name;
-	/* Locked by lock. */
-	unsigned int		options;
-	isc_task_t *		task;
-	dns_view_t *		view;
-	dns_lookupevent_t *	event;
-	dns_fetch_t *		fetch;
-	unsigned int		restarts;
-	isc_boolean_t		canceled;
-	dns_rdataset_t		rdataset;
-	dns_rdataset_t		sigrdataset;
-};
-
-#define LOOKUP_MAGIC			ISC_MAGIC('l', 'o', 'o', 'k')
-#define VALID_LOOKUP(l)			ISC_MAGIC_VALID((l), LOOKUP_MAGIC)
-
-#define MAX_RESTARTS 16
-
-static void lookup_find(dns_lookup_t *lookup, dns_fetchevent_t *event);
-
-static void
-fetch_done(isc_task_t *task, isc_event_t *event) {
-	dns_lookup_t *lookup = event->ev_arg;
-	dns_fetchevent_t *fevent;
-
-	UNUSED(task);
-	REQUIRE(event->ev_type == DNS_EVENT_FETCHDONE);
-	REQUIRE(VALID_LOOKUP(lookup));
-	REQUIRE(lookup->task == task);
-	fevent = (dns_fetchevent_t *)event;
-	REQUIRE(fevent->fetch == lookup->fetch);
-
-	lookup_find(lookup, fevent);
-}
-
-static inline isc_result_t
-start_fetch(dns_lookup_t *lookup) {
-	isc_result_t result;
-
-	/*
-	 * The caller must be holding the lookup's lock.
-	 */
-
-	REQUIRE(lookup->fetch == NULL);
-
-	result = dns_resolver_createfetch(lookup->view->resolver,
-					  dns_fixedname_name(&lookup->name),
-					  lookup->type,
-					  NULL, NULL, NULL, 0,
-					  lookup->task, fetch_done, lookup,
-					  &lookup->rdataset,
-					  &lookup->sigrdataset,
-					  &lookup->fetch);
-
-	return (result);
-}
-
-static isc_result_t
-build_event(dns_lookup_t *lookup) {
-	dns_name_t *name = NULL;
-	dns_rdataset_t *rdataset = NULL;
-	dns_rdataset_t *sigrdataset = NULL;
-	isc_result_t result;
-
-	name = isc_mem_get(lookup->mctx, sizeof(dns_name_t));
-	if (name == NULL) {
-		result = ISC_R_NOMEMORY;
-		goto fail;
-	}
-	dns_name_init(name, NULL);
-	result = dns_name_dup(dns_fixedname_name(&lookup->name),
-			      lookup->mctx, name);
-	if (result != ISC_R_SUCCESS)
-		goto fail;
-
-	if (dns_rdataset_isassociated(&lookup->rdataset)) {
-		rdataset = isc_mem_get(lookup->mctx, sizeof(dns_rdataset_t));
-		if (rdataset == NULL) {
-			result = ISC_R_NOMEMORY;
-			goto fail;
-		}
-		dns_rdataset_init(rdataset);
-		dns_rdataset_clone(&lookup->rdataset, rdataset);
-	}
-
-	if (dns_rdataset_isassociated(&lookup->sigrdataset)) {
-		sigrdataset = isc_mem_get(lookup->mctx,
-					  sizeof(dns_rdataset_t));
-		if (sigrdataset == NULL) {
-			result = ISC_R_NOMEMORY;
-			goto fail;
-		}
-		dns_rdataset_init(sigrdataset);
-		dns_rdataset_clone(&lookup->sigrdataset, sigrdataset);
-	}
-
-	lookup->event->name = name;
-	lookup->event->rdataset = rdataset;
-	lookup->event->sigrdataset = sigrdataset;
-
-	return (ISC_R_SUCCESS);
-
- fail:
-	if (name != NULL) {
-		if (dns_name_dynamic(name))
-			dns_name_free(name, lookup->mctx);
-		isc_mem_put(lookup->mctx, name, sizeof(dns_name_t));
-	}
-	if (rdataset != NULL) {
-		if (dns_rdataset_isassociated(rdataset))
-			dns_rdataset_disassociate(rdataset);
-		isc_mem_put(lookup->mctx, rdataset, sizeof(dns_rdataset_t));
-	}
-	return (result);
-}
-
-static isc_result_t
-view_find(dns_lookup_t *lookup, dns_name_t *foundname) {
-	isc_result_t result;
-	dns_name_t *name = dns_fixedname_name(&lookup->name);
-	dns_rdatatype_t type;
-
-	if (lookup->type == dns_rdatatype_rrsig)
-		type = dns_rdatatype_any;
-	else
-		type = lookup->type;
-
-	result = dns_view_find(lookup->view, name, type, 0, 0, ISC_FALSE,
-			       &lookup->event->db, &lookup->event->node,
-			       foundname, &lookup->rdataset,
-			       &lookup->sigrdataset);
-	return (result);
-}
-
-static void
-lookup_find(dns_lookup_t *lookup, dns_fetchevent_t *event) {
-	isc_result_t result;
-	isc_boolean_t want_restart;
-	isc_boolean_t send_event;
-	dns_name_t *name, *fname, *prefix;
-	dns_fixedname_t foundname, fixed;
-	dns_rdata_t rdata = DNS_RDATA_INIT;
-	unsigned int nlabels;
-	int order;
-	dns_namereln_t namereln;
-	dns_rdata_cname_t cname;
-	dns_rdata_dname_t dname;
-
-	REQUIRE(VALID_LOOKUP(lookup));
-
-	LOCK(&lookup->lock);
-
-	result = ISC_R_SUCCESS;
-	name = dns_fixedname_name(&lookup->name);
-
-	do {
-		lookup->restarts++;
-		want_restart = ISC_FALSE;
-		send_event = ISC_TRUE;
-
-		if (event == NULL && !lookup->canceled) {
-			dns_fixedname_init(&foundname);
-			fname = dns_fixedname_name(&foundname);
-			INSIST(!dns_rdataset_isassociated(&lookup->rdataset));
-			INSIST(!dns_rdataset_isassociated
-						(&lookup->sigrdataset));
-			/*
-			 * If we have restarted then clear the old node.				 */
-			if  (lookup->event->node != NULL) {
-				INSIST(lookup->event->db != NULL);
-				dns_db_detachnode(lookup->event->db,
-						 &lookup->event->node);
-			}
-			if (lookup->event->db != NULL)
-				dns_db_detach(&lookup->event->db);
-			result = view_find(lookup, fname);
-			if (result == ISC_R_NOTFOUND) {
-				/*
-				 * We don't know anything about the name.
-				 * Launch a fetch.
-				 */
-				if  (lookup->event->node != NULL) {
-					INSIST(lookup->event->db != NULL);
-					dns_db_detachnode(lookup->event->db,
-							 &lookup->event->node);
-				}
-				if (lookup->event->db != NULL)
-					dns_db_detach(&lookup->event->db);
-				result = start_fetch(lookup);
-				if (result == ISC_R_SUCCESS)
-					send_event = ISC_FALSE;
-				goto done;
-			}
-		} else if (event != NULL) {
-			result = event->result;
-			fname = dns_fixedname_name(&event->foundname);
-			dns_resolver_destroyfetch(&lookup->fetch);
-			INSIST(event->rdataset == &lookup->rdataset);
-			INSIST(event->sigrdataset == &lookup->sigrdataset);
-		} else
-			fname = NULL;	/* Silence compiler warning. */
-
-		/*
-		 * If we've been canceled, forget about the result.
-		 */
-		if (lookup->canceled)
-			result = ISC_R_CANCELED;
-
-		switch (result) {
-		case ISC_R_SUCCESS:
-			result = build_event(lookup);
-			if (event == NULL)
-				break;
-			if (event->db != NULL)
-				dns_db_attach(event->db, &lookup->event->db);
-			if (event->node != NULL)
-				dns_db_attachnode(lookup->event->db,
-						  event->node,
-						  &lookup->event->node);
-			break;
-		case DNS_R_CNAME:
-			/*
-			 * Copy the CNAME's target into the lookup's
-			 * query name and start over.
-			 */
-			result = dns_rdataset_first(&lookup->rdataset);
-			if (result != ISC_R_SUCCESS)
-				break;
-			dns_rdataset_current(&lookup->rdataset, &rdata);
-			result = dns_rdata_tostruct(&rdata, &cname, NULL);
-			dns_rdata_reset(&rdata);
-			if (result != ISC_R_SUCCESS)
-				break;
-			result = dns_name_copy(&cname.cname, name, NULL);
-			dns_rdata_freestruct(&cname);
-			if (result == ISC_R_SUCCESS) {
-				want_restart = ISC_TRUE;
-				send_event = ISC_FALSE;
-			}
-			break;
-		case DNS_R_DNAME:
-			namereln = dns_name_fullcompare(name, fname, &order,
-							&nlabels);
-			INSIST(namereln == dns_namereln_subdomain);
-			/*
-			 * Get the target name of the DNAME.
-			 */
-			result = dns_rdataset_first(&lookup->rdataset);
-			if (result != ISC_R_SUCCESS)
-				break;
-			dns_rdataset_current(&lookup->rdataset, &rdata);
-			result = dns_rdata_tostruct(&rdata, &dname, NULL);
-			dns_rdata_reset(&rdata);
-			if (result != ISC_R_SUCCESS)
-				break;
-			/*
-			 * Construct the new query name and start over.
-			 */
-			dns_fixedname_init(&fixed);
-			prefix = dns_fixedname_name(&fixed);
-			dns_name_split(name, nlabels, prefix, NULL);
-			result = dns_name_concatenate(prefix, &dname.dname,
-						      name, NULL);
-			dns_rdata_freestruct(&dname);
-			if (result == ISC_R_SUCCESS) {
-				want_restart = ISC_TRUE;
-				send_event = ISC_FALSE;
-			}
-			break;
-		default:
-			send_event = ISC_TRUE;
-		}
-
-		if (dns_rdataset_isassociated(&lookup->rdataset))
-			dns_rdataset_disassociate(&lookup->rdataset);
-		if (dns_rdataset_isassociated(&lookup->sigrdataset))
-			dns_rdataset_disassociate(&lookup->sigrdataset);
-
-	done:
-		if (event != NULL) {
-			if (event->node != NULL)
-				dns_db_detachnode(event->db, &event->node);
-			if (event->db != NULL)
-				dns_db_detach(&event->db);
-			isc_event_free(ISC_EVENT_PTR(&event));
-		}
-
-		/*
-		 * Limit the number of restarts.
-		 */
-		if (want_restart && lookup->restarts == MAX_RESTARTS) {
-			want_restart = ISC_FALSE;
-			result = ISC_R_QUOTA;
-			send_event = ISC_TRUE;
-		}
-
-	} while (want_restart);
-
-	if (send_event) {
-		lookup->event->result = result;
-		lookup->event->ev_sender = lookup;
-		isc_task_sendanddetach(&lookup->task,
-				       (isc_event_t **)&lookup->event);
-		dns_view_detach(&lookup->view);
-	}
-
-	UNLOCK(&lookup->lock);
-}
-
-static void
-levent_destroy(isc_event_t *event) {
-	dns_lookupevent_t *levent;
-	isc_mem_t *mctx;
- 
-	REQUIRE(event->ev_type == DNS_EVENT_LOOKUPDONE);
-	mctx = event->ev_destroy_arg;
-	levent = (dns_lookupevent_t *)event;
-
-	if (levent->name != NULL) {
-		if (dns_name_dynamic(levent->name))
-			dns_name_free(levent->name, mctx);
-		isc_mem_put(mctx, levent->name, sizeof(dns_name_t));
-	}
-	if (levent->rdataset != NULL) {
-		dns_rdataset_disassociate(levent->rdataset);
-		isc_mem_put(mctx, levent->rdataset, sizeof(dns_rdataset_t));
-	}
-	if (levent->sigrdataset != NULL) {
-		dns_rdataset_disassociate(levent->sigrdataset);
-		isc_mem_put(mctx, levent->sigrdataset, sizeof(dns_rdataset_t));
-	}
-	if (levent->node != NULL)
-		dns_db_detachnode(levent->db, &levent->node);
-	if (levent->db != NULL)
-		dns_db_detach(&levent->db);
-	isc_mem_put(mctx, event, event->ev_size);
-}
-
-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 = 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_put(mctx, lookup, sizeof(*lookup));
-
-	return (result);
-}
-
-void
-dns_lookup_cancel(dns_lookup_t *lookup) {
-	REQUIRE(VALID_LOOKUP(lookup));
-
-	LOCK(&lookup->lock);
-
-	if (!lookup->canceled) {
-		lookup->canceled = ISC_TRUE;
-		if (lookup->fetch != NULL) {
-			INSIST(lookup->view != NULL);
-			dns_resolver_cancelfetch(lookup->fetch);
-		}
-	}
-
-	UNLOCK(&lookup->lock);
-}
-
-void
-dns_lookup_destroy(dns_lookup_t **lookupp) {
-	dns_lookup_t *lookup;
-
-	REQUIRE(lookupp != NULL);
-	lookup = *lookupp;
-	REQUIRE(VALID_LOOKUP(lookup));
-	REQUIRE(lookup->event == NULL);
-	REQUIRE(lookup->task == NULL);
-	REQUIRE(lookup->view == NULL);
-	if (dns_rdataset_isassociated(&lookup->rdataset))
-		dns_rdataset_disassociate(&lookup->rdataset);
-	if (dns_rdataset_isassociated(&lookup->sigrdataset))
-		dns_rdataset_disassociate(&lookup->sigrdataset);
-
-	DESTROYLOCK(&lookup->lock);
-	lookup->magic = 0;
-	isc_mem_put(lookup->mctx, lookup, sizeof(*lookup));
-
-	*lookupp = NULL;
-}