1 files changed, 0 insertions, 648 deletions

diff --git a/external/unbound/iterator/iter_delegpt.c b/external/unbound/iterator/iter_delegpt.c
deleted file mode 100644
index ecf88b293..000000000
--- a/external/unbound/iterator/iter_delegpt.c
+++ /dev/null
@@ -1,648 +0,0 @@
-/*
- * iterator/iter_delegpt.c - delegation point with NS and address information.
- *
- * Copyright (c) 2007, NLnet Labs. All rights reserved.
- *
- * This software is open source.
- * 
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 
- * Redistributions of source code must retain the above copyright notice,
- * this list of conditions and the following disclaimer.
- * 
- * Redistributions in binary form must reproduce the above copyright notice,
- * this list of conditions and the following disclaimer in the documentation
- * and/or other materials provided with the distribution.
- * 
- * Neither the name of the NLNET LABS nor the names of its contributors may
- * be used to endorse or promote products derived from this software without
- * specific prior written permission.
- * 
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
- * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
- * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
- * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
- * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
- * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-/**
- * \file
- *
- * This file implements the Delegation Point. It contains a list of name servers
- * and their addresses if known.
- */
-#include "config.h"
-#include "iterator/iter_delegpt.h"
-#include "services/cache/dns.h"
-#include "util/regional.h"
-#include "util/data/dname.h"
-#include "util/data/packed_rrset.h"
-#include "util/data/msgreply.h"
-#include "util/net_help.h"
-#include "sldns/rrdef.h"
-#include "sldns/sbuffer.h"
-
-struct delegpt* 
-delegpt_create(struct regional* region)
-{
-	struct delegpt* dp=(struct delegpt*)regional_alloc(
-		region, sizeof(*dp));
-	if(!dp)
-		return NULL;
-	memset(dp, 0, sizeof(*dp));
-	return dp;
-}
-
-struct delegpt* delegpt_copy(struct delegpt* dp, struct regional* region)
-{
-	struct delegpt* copy = delegpt_create(region);
-	struct delegpt_ns* ns;
-	struct delegpt_addr* a;
-	if(!copy) 
-		return NULL;
-	if(!delegpt_set_name(copy, region, dp->name))
-		return NULL;
-	copy->bogus = dp->bogus;
-	copy->has_parent_side_NS = dp->has_parent_side_NS;
-	copy->ssl_upstream = dp->ssl_upstream;
-	for(ns = dp->nslist; ns; ns = ns->next) {
-		if(!delegpt_add_ns(copy, region, ns->name, ns->lame))
-			return NULL;
-		copy->nslist->resolved = ns->resolved;
-		copy->nslist->got4 = ns->got4;
-		copy->nslist->got6 = ns->got6;
-		copy->nslist->done_pside4 = ns->done_pside4;
-		copy->nslist->done_pside6 = ns->done_pside6;
-	}
-	for(a = dp->target_list; a; a = a->next_target) {
-		if(!delegpt_add_addr(copy, region, &a->addr, a->addrlen, 
-			a->bogus, a->lame))
-			return NULL;
-	}
-	return copy;
-}
-
-int 
-delegpt_set_name(struct delegpt* dp, struct regional* region, uint8_t* name)
-{
-	log_assert(!dp->dp_type_mlc);
-	dp->namelabs = dname_count_size_labels(name, &dp->namelen);
-	dp->name = regional_alloc_init(region, name, dp->namelen);
-	return dp->name != 0;
-}
-
-int 
-delegpt_add_ns(struct delegpt* dp, struct regional* region, uint8_t* name,
-	uint8_t lame)
-{
-	struct delegpt_ns* ns;
-	size_t len;
-	(void)dname_count_size_labels(name, &len);
-	log_assert(!dp->dp_type_mlc);
-	/* slow check for duplicates to avoid counting failures when
-	 * adding the same server as a dependency twice */
-	if(delegpt_find_ns(dp, name, len))
-		return 1;
-	ns = (struct delegpt_ns*)regional_alloc(region,
-		sizeof(struct delegpt_ns));
-	if(!ns)
-		return 0;
-	ns->next = dp->nslist;
-	ns->namelen = len;
-	dp->nslist = ns;
-	ns->name = regional_alloc_init(region, name, ns->namelen);
-	ns->resolved = 0;
-	ns->got4 = 0;
-	ns->got6 = 0;
-	ns->lame = lame;
-	ns->done_pside4 = 0;
-	ns->done_pside6 = 0;
-	return ns->name != 0;
-}
-
-struct delegpt_ns*
-delegpt_find_ns(struct delegpt* dp, uint8_t* name, size_t namelen)
-{
-	struct delegpt_ns* p = dp->nslist;
-	while(p) {
-		if(namelen == p->namelen && 
-			query_dname_compare(name, p->name) == 0) {
-			return p;
-		}
-		p = p->next;
-	}
-	return NULL;
-}
-
-struct delegpt_addr*
-delegpt_find_addr(struct delegpt* dp, struct sockaddr_storage* addr, 
-	socklen_t addrlen)
-{
-	struct delegpt_addr* p = dp->target_list;
-	while(p) {
-		if(sockaddr_cmp_addr(addr, addrlen, &p->addr, p->addrlen)==0
-			&& ((struct sockaddr_in*)addr)->sin_port ==
-			   ((struct sockaddr_in*)&p->addr)->sin_port) {
-			return p;
-		}
-		p = p->next_target;
-	}
-	return NULL;
-}
-
-int 
-delegpt_add_target(struct delegpt* dp, struct regional* region, 
-	uint8_t* name, size_t namelen, struct sockaddr_storage* addr, 
-	socklen_t addrlen, uint8_t bogus, uint8_t lame)
-{
-	struct delegpt_ns* ns = delegpt_find_ns(dp, name, namelen);
-	log_assert(!dp->dp_type_mlc);
-	if(!ns) {
-		/* ignore it */
-		return 1;
-	}
-	if(!lame) {
-		if(addr_is_ip6(addr, addrlen))
-			ns->got6 = 1;
-		else	ns->got4 = 1;
-		if(ns->got4 && ns->got6)
-			ns->resolved = 1;
-	}
-	return delegpt_add_addr(dp, region, addr, addrlen, bogus, lame);
-}
-
-int 
-delegpt_add_addr(struct delegpt* dp, struct regional* region, 
-	struct sockaddr_storage* addr, socklen_t addrlen, uint8_t bogus, 
-	uint8_t lame)
-{
-	struct delegpt_addr* a;
-	log_assert(!dp->dp_type_mlc);
-	/* check for duplicates */
-	if((a = delegpt_find_addr(dp, addr, addrlen))) {
-		if(bogus)
-			a->bogus = bogus;
-		if(!lame)
-			a->lame = 0;
-		return 1;
-	}
-
-	a = (struct delegpt_addr*)regional_alloc(region,
-		sizeof(struct delegpt_addr));
-	if(!a)
-		return 0;
-	a->next_target = dp->target_list;
-	dp->target_list = a;
-	a->next_result = 0;
-	a->next_usable = dp->usable_list;
-	dp->usable_list = a;
-	memcpy(&a->addr, addr, addrlen);
-	a->addrlen = addrlen;
-	a->attempts = 0;
-	a->bogus = bogus;
-	a->lame = lame;
-	a->dnsseclame = 0;
-	return 1;
-}
-
-void
-delegpt_count_ns(struct delegpt* dp, size_t* numns, size_t* missing)
-{
-	struct delegpt_ns* ns;
-	*numns = 0;
-	*missing = 0;
-	for(ns = dp->nslist; ns; ns = ns->next) {
-		(*numns)++;
-		if(!ns->resolved)
-			(*missing)++;
-	}
-}
-
-void
-delegpt_count_addr(struct delegpt* dp, size_t* numaddr, size_t* numres, 
-	size_t* numavail)
-{
-	struct delegpt_addr* a;
-	*numaddr = 0;
-	*numres = 0;
-	*numavail = 0;
-	for(a = dp->target_list; a; a = a->next_target) {
-		(*numaddr)++;
-	}
-	for(a = dp->result_list; a; a = a->next_result) {
-		(*numres)++;
-	}
-	for(a = dp->usable_list; a; a = a->next_usable) {
-		(*numavail)++;
-	}
-}
-
-void delegpt_log(enum verbosity_value v, struct delegpt* dp)
-{
-	char buf[LDNS_MAX_DOMAINLEN+1];
-	struct delegpt_ns* ns;
-	struct delegpt_addr* a;
-	size_t missing=0, numns=0, numaddr=0, numres=0, numavail=0;
-	if(verbosity < v)
-		return;
-	dname_str(dp->name, buf);
-	if(dp->nslist == NULL && dp->target_list == NULL) {
-		log_info("DelegationPoint<%s>: empty", buf);
-		return;
-	}
-	delegpt_count_ns(dp, &numns, &missing);
-	delegpt_count_addr(dp, &numaddr, &numres, &numavail);
-	log_info("DelegationPoint<%s>: %u names (%u missing), "
-		"%u addrs (%u result, %u avail)%s", 
-		buf, (unsigned)numns, (unsigned)missing, 
-		(unsigned)numaddr, (unsigned)numres, (unsigned)numavail,
-		(dp->has_parent_side_NS?" parentNS":" cacheNS"));
-	if(verbosity >= VERB_ALGO) {
-		for(ns = dp->nslist; ns; ns = ns->next) {
-			dname_str(ns->name, buf);
-			log_info("  %s %s%s%s%s%s%s%s", buf, 
-			(ns->resolved?"*":""),
-			(ns->got4?" A":""), (ns->got6?" AAAA":""),
-			(dp->bogus?" BOGUS":""), (ns->lame?" PARENTSIDE":""),
-			(ns->done_pside4?" PSIDE_A":""),
-			(ns->done_pside6?" PSIDE_AAAA":""));
-		}
-		for(a = dp->target_list; a; a = a->next_target) {
-			const char* str = "  ";
-			if(a->bogus && a->lame) str = "  BOGUS ADDR_LAME ";
-			else if(a->bogus) str = "  BOGUS ";
-			else if(a->lame) str = "  ADDR_LAME ";
-			log_addr(VERB_ALGO, str, &a->addr, a->addrlen);
-		}
-	}
-}
-
-void 
-delegpt_add_unused_targets(struct delegpt* dp)
-{
-	struct delegpt_addr* usa = dp->usable_list;
-	dp->usable_list = NULL;
-	while(usa) {
-		usa->next_result = dp->result_list;
-		dp->result_list = usa;
-		usa = usa->next_usable;
-	}
-}
-
-size_t
-delegpt_count_targets(struct delegpt* dp)
-{
-	struct delegpt_addr* a;
-	size_t n = 0;
-	for(a = dp->target_list; a; a = a->next_target)
-		n++;
-	return n;
-}
-
-size_t 
-delegpt_count_missing_targets(struct delegpt* dp)
-{
-	struct delegpt_ns* ns;
-	size_t n = 0;
-	for(ns = dp->nslist; ns; ns = ns->next)
-		if(!ns->resolved)
-			n++;
-	return n;
-}
-
-/** find NS rrset in given list */
-static struct ub_packed_rrset_key*
-find_NS(struct reply_info* rep, size_t from, size_t to)
-{
-	size_t i;
-	for(i=from; i<to; i++) {
-		if(ntohs(rep->rrsets[i]->rk.type) == LDNS_RR_TYPE_NS)
-			return rep->rrsets[i];
-	}
-	return NULL;
-}
-
-struct delegpt* 
-delegpt_from_message(struct dns_msg* msg, struct regional* region)
-{
-	struct ub_packed_rrset_key* ns_rrset = NULL;
-	struct delegpt* dp;
-	size_t i;
-	/* look for NS records in the authority section... */
-	ns_rrset = find_NS(msg->rep, msg->rep->an_numrrsets, 
-		msg->rep->an_numrrsets+msg->rep->ns_numrrsets);
-
-	/* In some cases (even legitimate, perfectly legal cases), the 
-	 * NS set for the "referral" might be in the answer section. */
-	if(!ns_rrset)
-		ns_rrset = find_NS(msg->rep, 0, msg->rep->an_numrrsets);
-	
-	/* If there was no NS rrset in the authority section, then this 
-	 * wasn't a referral message. (It might not actually be a 
-	 * referral message anyway) */
-	if(!ns_rrset)
-		return NULL;
-	
-	/* If we found any, then Yay! we have a delegation point. */
-	dp = delegpt_create(region);
-	if(!dp)
-		return NULL;
-	dp->has_parent_side_NS = 1; /* created from message */
-	if(!delegpt_set_name(dp, region, ns_rrset->rk.dname))
-		return NULL;
-	if(!delegpt_rrset_add_ns(dp, region, ns_rrset, 0))
-		return NULL;
-
-	/* add glue, A and AAAA in answer and additional section */
-	for(i=0; i<msg->rep->rrset_count; i++) {
-		struct ub_packed_rrset_key* s = msg->rep->rrsets[i];
-		/* skip auth section. FIXME really needed?*/
-		if(msg->rep->an_numrrsets <= i && 
-			i < (msg->rep->an_numrrsets+msg->rep->ns_numrrsets))
-			continue;
-
-		if(ntohs(s->rk.type) == LDNS_RR_TYPE_A) {
-			if(!delegpt_add_rrset_A(dp, region, s, 0))
-				return NULL;
-		} else if(ntohs(s->rk.type) == LDNS_RR_TYPE_AAAA) {
-			if(!delegpt_add_rrset_AAAA(dp, region, s, 0))
-				return NULL;
-		}
-	}
-	return dp;
-}
-
-int 
-delegpt_rrset_add_ns(struct delegpt* dp, struct regional* region,
-        struct ub_packed_rrset_key* ns_rrset, uint8_t lame)
-{
-	struct packed_rrset_data* nsdata = (struct packed_rrset_data*)
-		ns_rrset->entry.data;
-	size_t i;
-	log_assert(!dp->dp_type_mlc);
-	if(nsdata->security == sec_status_bogus)
-		dp->bogus = 1;
-	for(i=0; i<nsdata->count; i++) {
-		if(nsdata->rr_len[i] < 2+1) continue; /* len + root label */
-		if(dname_valid(nsdata->rr_data[i]+2, nsdata->rr_len[i]-2) !=
-			(size_t)sldns_read_uint16(nsdata->rr_data[i]))
-			continue; /* bad format */
-		/* add rdata of NS (= wirefmt dname), skip rdatalen bytes */
-		if(!delegpt_add_ns(dp, region, nsdata->rr_data[i]+2, lame))
-			return 0;
-	}
-	return 1;
-}
-
-int 
-delegpt_add_rrset_A(struct delegpt* dp, struct regional* region,
-	struct ub_packed_rrset_key* ak, uint8_t lame)
-{
-        struct packed_rrset_data* d=(struct packed_rrset_data*)ak->entry.data;
-        size_t i;
-        struct sockaddr_in sa;
-        socklen_t len = (socklen_t)sizeof(sa);
-	log_assert(!dp->dp_type_mlc);
-        memset(&sa, 0, len);
-        sa.sin_family = AF_INET;
-        sa.sin_port = (in_port_t)htons(UNBOUND_DNS_PORT);
-        for(i=0; i<d->count; i++) {
-                if(d->rr_len[i] != 2 + INET_SIZE)
-                        continue;
-                memmove(&sa.sin_addr, d->rr_data[i]+2, INET_SIZE);
-                if(!delegpt_add_target(dp, region, ak->rk.dname,
-                        ak->rk.dname_len, (struct sockaddr_storage*)&sa,
-                        len, (d->security==sec_status_bogus), lame))
-                        return 0;
-        }
-        return 1;
-}
-
-int 
-delegpt_add_rrset_AAAA(struct delegpt* dp, struct regional* region,
-	struct ub_packed_rrset_key* ak, uint8_t lame)
-{
-        struct packed_rrset_data* d=(struct packed_rrset_data*)ak->entry.data;
-        size_t i;
-        struct sockaddr_in6 sa;
-        socklen_t len = (socklen_t)sizeof(sa);
-	log_assert(!dp->dp_type_mlc);
-        memset(&sa, 0, len);
-        sa.sin6_family = AF_INET6;
-        sa.sin6_port = (in_port_t)htons(UNBOUND_DNS_PORT);
-        for(i=0; i<d->count; i++) {
-                if(d->rr_len[i] != 2 + INET6_SIZE) /* rdatalen + len of IP6 */
-                        continue;
-                memmove(&sa.sin6_addr, d->rr_data[i]+2, INET6_SIZE);
-                if(!delegpt_add_target(dp, region, ak->rk.dname,
-                        ak->rk.dname_len, (struct sockaddr_storage*)&sa,
-                        len, (d->security==sec_status_bogus), lame))
-                        return 0;
-        }
-        return 1;
-}
-
-int 
-delegpt_add_rrset(struct delegpt* dp, struct regional* region,
-        struct ub_packed_rrset_key* rrset, uint8_t lame)
-{
-	if(!rrset)
-		return 1;
-	if(ntohs(rrset->rk.type) == LDNS_RR_TYPE_NS)
-		return delegpt_rrset_add_ns(dp, region, rrset, lame);
-	else if(ntohs(rrset->rk.type) == LDNS_RR_TYPE_A)
-		return delegpt_add_rrset_A(dp, region, rrset, lame);
-	else if(ntohs(rrset->rk.type) == LDNS_RR_TYPE_AAAA)
-		return delegpt_add_rrset_AAAA(dp, region, rrset, lame);
-	log_warn("Unknown rrset type added to delegpt");
-	return 1;
-}
-
-void delegpt_add_neg_msg(struct delegpt* dp, struct msgreply_entry* msg)
-{
-	struct reply_info* rep = (struct reply_info*)msg->entry.data;
-	if(!rep) return;
-
-	/* if error or no answers */
-	if(FLAGS_GET_RCODE(rep->flags) != 0 || rep->an_numrrsets == 0) {
-		struct delegpt_ns* ns = delegpt_find_ns(dp, msg->key.qname, 
-			msg->key.qname_len);
-		if(ns) {
-			if(msg->key.qtype == LDNS_RR_TYPE_A)
-				ns->got4 = 1;
-			else if(msg->key.qtype == LDNS_RR_TYPE_AAAA)
-				ns->got6 = 1;
-			if(ns->got4 && ns->got6)
-				ns->resolved = 1;
-		}
-	}
-}
-
-void delegpt_no_ipv6(struct delegpt* dp)
-{
-	struct delegpt_ns* ns;
-	for(ns = dp->nslist; ns; ns = ns->next) {
-		/* no ipv6, so only ipv4 is enough to resolve a nameserver */
-		if(ns->got4)
-			ns->resolved = 1;
-	}
-}
-
-void delegpt_no_ipv4(struct delegpt* dp)
-{
-	struct delegpt_ns* ns;
-	for(ns = dp->nslist; ns; ns = ns->next) {
-		/* no ipv4, so only ipv6 is enough to resolve a nameserver */
-		if(ns->got6)
-			ns->resolved = 1;
-	}
-}
-
-struct delegpt* delegpt_create_mlc(uint8_t* name)
-{
-	struct delegpt* dp=(struct delegpt*)calloc(1, sizeof(*dp));
-	if(!dp)
-		return NULL;
-	dp->dp_type_mlc = 1;
-	if(name) {
-		dp->namelabs = dname_count_size_labels(name, &dp->namelen);
-		dp->name = memdup(name, dp->namelen);
-		if(!dp->name) {
-			free(dp);
-			return NULL;
-		}
-	}
-	return dp;
-}
-
-void delegpt_free_mlc(struct delegpt* dp)
-{
-	struct delegpt_ns* n, *nn;
-	struct delegpt_addr* a, *na;
-	if(!dp) return;
-	log_assert(dp->dp_type_mlc);
-	n = dp->nslist;
-	while(n) {
-		nn = n->next;
-		free(n->name);
-		free(n);
-		n = nn;
-	}
-	a = dp->target_list;
-	while(a) {
-		na = a->next_target;
-		free(a);
-		a = na;
-	}
-	free(dp->name);
-	free(dp);
-}
-
-int delegpt_set_name_mlc(struct delegpt* dp, uint8_t* name)
-{
-	log_assert(dp->dp_type_mlc);
-	dp->namelabs = dname_count_size_labels(name, &dp->namelen);
-	dp->name = memdup(name, dp->namelen);
-	return (dp->name != NULL);
-}
-
-int delegpt_add_ns_mlc(struct delegpt* dp, uint8_t* name, uint8_t lame)
-{
-	struct delegpt_ns* ns;
-	size_t len;
-	(void)dname_count_size_labels(name, &len);
-	log_assert(dp->dp_type_mlc);
-	/* slow check for duplicates to avoid counting failures when
-	 * adding the same server as a dependency twice */
-	if(delegpt_find_ns(dp, name, len))
-		return 1;
-	ns = (struct delegpt_ns*)malloc(sizeof(struct delegpt_ns));
-	if(!ns)
-		return 0;
-	ns->namelen = len;
-	ns->name = memdup(name, ns->namelen);
-	if(!ns->name) {
-		free(ns);
-		return 0;
-	}
-	ns->next = dp->nslist;
-	dp->nslist = ns;
-	ns->resolved = 0;
-	ns->got4 = 0;
-	ns->got6 = 0;
-	ns->lame = (uint8_t)lame;
-	ns->done_pside4 = 0;
-	ns->done_pside6 = 0;
-	return 1;
-}
-
-int delegpt_add_addr_mlc(struct delegpt* dp, struct sockaddr_storage* addr,
-	socklen_t addrlen, uint8_t bogus, uint8_t lame)
-{
-	struct delegpt_addr* a;
-	log_assert(dp->dp_type_mlc);
-	/* check for duplicates */
-	if((a = delegpt_find_addr(dp, addr, addrlen))) {
-		if(bogus)
-			a->bogus = bogus;
-		if(!lame)
-			a->lame = 0;
-		return 1;
-	}
-
-	a = (struct delegpt_addr*)malloc(sizeof(struct delegpt_addr));
-	if(!a)
-		return 0;
-	a->next_target = dp->target_list;
-	dp->target_list = a;
-	a->next_result = 0;
-	a->next_usable = dp->usable_list;
-	dp->usable_list = a;
-	memcpy(&a->addr, addr, addrlen);
-	a->addrlen = addrlen;
-	a->attempts = 0;
-	a->bogus = bogus;
-	a->lame = lame;
-	a->dnsseclame = 0;
-	return 1;
-}
-
-int delegpt_add_target_mlc(struct delegpt* dp, uint8_t* name, size_t namelen,
-	struct sockaddr_storage* addr, socklen_t addrlen, uint8_t bogus,
-	uint8_t lame)
-{
-	struct delegpt_ns* ns = delegpt_find_ns(dp, name, namelen);
-	log_assert(dp->dp_type_mlc);
-	if(!ns) {
-		/* ignore it */
-		return 1;
-	}
-	if(!lame) {
-		if(addr_is_ip6(addr, addrlen))
-			ns->got6 = 1;
-		else	ns->got4 = 1;
-		if(ns->got4 && ns->got6)
-			ns->resolved = 1;
-	}
-	return delegpt_add_addr_mlc(dp, addr, addrlen, bogus, lame);
-}
-
-size_t delegpt_get_mem(struct delegpt* dp)
-{
-	struct delegpt_ns* ns;
-	size_t s;
-	if(!dp) return 0;
-	s = sizeof(*dp) + dp->namelen +
-		delegpt_count_targets(dp)*sizeof(struct delegpt_addr);
-	for(ns=dp->nslist; ns; ns=ns->next)
-		s += sizeof(*ns)+ns->namelen;
-	return s;
-}