- Import Heimdal 1.5 distribution.

1 files changed, 347 insertions, 115 deletions

diff --git a/lib/roken/resolve.c b/lib/roken/resolve.c
index 8f8fec7..b27f37a 100644
--- a/lib/roken/resolve.c
+++ b/lib/roken/resolve.c
@@ -1,23 +1,23 @@
 /*
- * Copyright (c) 1995 - 2006 Kungliga Tekniska Högskolan
+ * Copyright (c) 1995 - 2006 Kungliga Tekniska Högskolan
  * (Royal Institute of Technology, Stockholm, Sweden).
  * All rights reserved.
- * 
+ *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
- * 
+ *
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
- * 
+ *
  * 2. 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.
- * 
+ *
  * 3. Neither the name of the Institute 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 INSTITUTE 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
@@ -31,9 +31,9 @@
  * SUCH DAMAGE.
  */
 
-#ifdef HAVE_CONFIG_H
+
 #include <config.h>
-#endif
+
 #include "roken.h"
 #ifdef HAVE_ARPA_NAMESER_H
 #include <arpa/nameser.h>
@@ -41,12 +41,13 @@
 #ifdef HAVE_RESOLV_H
 #include <resolv.h>
 #endif
+#ifdef HAVE_DNS_H
+#include <dns.h>
+#endif
 #include "resolve.h"
 
 #include <assert.h>
 
-RCSID("$Id: resolve.c 19869 2007-01-12 16:03:14Z lha $");
-
 #ifdef _AIX /* AIX have broken res_nsearch() in 5.1 (5.0 also ?) */
 #undef HAVE_RES_NSEARCH
 #endif
@@ -77,8 +78,8 @@ static struct stot{
 
 int _resolve_debug = 0;
 
-int ROKEN_LIB_FUNCTION
-dns_string_to_type(const char *name)
+ROKEN_LIB_FUNCTION int ROKEN_LIB_CALL
+rk_dns_string_to_type(const char *name)
 {
     struct stot *p = stot;
     for(p = stot; p->name; p++)
@@ -87,8 +88,8 @@ dns_string_to_type(const char *name)
     return -1;
 }
 
-const char * ROKEN_LIB_FUNCTION
-dns_type_to_string(int type)
+ROKEN_LIB_FUNCTION const char * ROKEN_LIB_CALL
+rk_dns_type_to_string(int type)
 {
     struct stot *p = stot;
     for(p = stot; p->name; p++)
@@ -97,10 +98,10 @@ dns_type_to_string(int type)
     return NULL;
 }
 
-#if (defined(HAVE_RES_SEARCH) || defined(HAVE_RES_NSEARCH)) && defined(HAVE_DN_EXPAND)
+#if ((defined(HAVE_RES_SEARCH) || defined(HAVE_RES_NSEARCH)) && defined(HAVE_DN_EXPAND)) || defined(HAVE_WINDNS)
 
 static void
-dns_free_rr(struct resource_record *rr)
+dns_free_rr(struct rk_resource_record *rr)
 {
     if(rr->domain)
 	free(rr->domain);
@@ -109,26 +110,29 @@ dns_free_rr(struct resource_record *rr)
     free(rr);
 }
 
-void ROKEN_LIB_FUNCTION
-dns_free_data(struct dns_reply *r)
+ROKEN_LIB_FUNCTION void ROKEN_LIB_CALL
+rk_dns_free_data(struct rk_dns_reply *r)
 {
-    struct resource_record *rr;
+    struct rk_resource_record *rr;
     if(r->q.domain)
 	free(r->q.domain);
     for(rr = r->head; rr;){
-	struct resource_record *tmp = rr;
+	struct rk_resource_record *tmp = rr;
 	rr = rr->next;
 	dns_free_rr(tmp);
     }
     free (r);
 }
 
+#ifndef HAVE_WINDNS
+
 static int
-parse_record(const unsigned char *data, const unsigned char *end_data, 
-	     const unsigned char **pp, struct resource_record **ret_rr)
+parse_record(const unsigned char *data, const unsigned char *end_data,
+	     const unsigned char **pp, struct rk_resource_record **ret_rr)
 {
-    struct resource_record *rr;
-    int type, class, ttl, size;
+    struct rk_resource_record *rr;
+    int type, class, ttl;
+    unsigned size;
     int status;
     char host[MAXDNAME];
     const unsigned char *p = *pp;
@@ -136,7 +140,7 @@ parse_record(const unsigned char *data, const unsigned char *end_data,
     *ret_rr = NULL;
 
     status = dn_expand(data, end_data, p, host, sizeof(host));
-    if(status < 0) 
+    if(status < 0)
 	return -1;
     if (p + status + 10 > end_data)
 	return -1;
@@ -155,7 +159,7 @@ parse_record(const unsigned char *data, const unsigned char *end_data,
 	return -1;
 
     rr = calloc(1, sizeof(*rr));
-    if(rr == NULL) 
+    if(rr == NULL)
 	return -1;
     rr->domain = strdup(host);
     if(rr->domain == NULL) {
@@ -190,13 +194,13 @@ parse_record(const unsigned char *data, const unsigned char *end_data,
 	    dns_free_rr(rr);
 	    return -1;
 	}
-	if (status + 2 > size) {
+	if ((size_t)status + 2 > size) {
 	    dns_free_rr(rr);
 	    return -1;
 	}
 
 	hostlen = strlen(host);
-	rr->u.mx = (struct mx_record*)malloc(sizeof(struct mx_record) + 
+	rr->u.mx = (struct mx_record*)malloc(sizeof(struct mx_record) +
 						hostlen);
 	if(rr->u.mx == NULL) {
 	    dns_free_rr(rr);
@@ -213,14 +217,14 @@ parse_record(const unsigned char *data, const unsigned char *end_data,
 	    dns_free_rr(rr);
 	    return -1;
 	}
-	if (status + 6 > size) {
+	if ((size_t)status + 6 > size) {
 	    dns_free_rr(rr);
 	    return -1;
 	}
 
 	hostlen = strlen(host);
-	rr->u.srv = 
-	    (struct srv_record*)malloc(sizeof(struct srv_record) + 
+	rr->u.srv =
+	    (struct srv_record*)malloc(sizeof(struct srv_record) +
 				       hostlen);
 	if(rr->u.srv == NULL) {
 	    dns_free_rr(rr);
@@ -233,7 +237,7 @@ parse_record(const unsigned char *data, const unsigned char *end_data,
 	break;
     }
     case rk_ns_t_txt:{
-	if(size == 0 || size < *p + 1) {
+	if(size == 0 || size < (unsigned)(*p + 1)) {
 	    dns_free_rr(rr);
 	    return -1;
 	}
@@ -280,7 +284,7 @@ parse_record(const unsigned char *data, const unsigned char *end_data,
 	    dns_free_rr(rr);
 	    return -1;
 	}
-	if (status + 18 > size) {
+	if ((size_t)status + 18 > size) {
 	    dns_free_rr(rr);
 	    return -1;
 	}
@@ -400,17 +404,17 @@ parse_record(const unsigned char *data, const unsigned char *end_data,
 #ifndef TEST_RESOLVE
 static
 #endif
-struct dns_reply*
+struct rk_dns_reply*
 parse_reply(const unsigned char *data, size_t len)
 {
     const unsigned char *p;
     int status;
-    int i;
+    size_t i;
     char host[MAXDNAME];
     const unsigned char *end_data = data + len;
-    struct dns_reply *r;
-    struct resource_record **rr;
-    
+    struct rk_dns_reply *r;
+    struct rk_resource_record **rr;
+
     r = calloc(1, sizeof(*r));
     if (r == NULL)
 	return NULL;
@@ -448,16 +452,16 @@ parse_reply(const unsigned char *data, size_t len)
     }
     status = dn_expand(data, end_data, p, host, sizeof(host));
     if(status < 0){
-	dns_free_data(r);
+	rk_dns_free_data(r);
 	return NULL;
     }
     r->q.domain = strdup(host);
     if(r->q.domain == NULL) {
-	dns_free_data(r);
+	rk_dns_free_data(r);
 	return NULL;
     }
     if (p + status + 4 > end_data) {
-	dns_free_data(r);
+	rk_dns_free_data(r);
 	return NULL;
     }
     p += status;
@@ -465,25 +469,25 @@ parse_reply(const unsigned char *data, size_t len)
     p += 2;
     r->q.class = (p[0] << 8 | p[1]);
     p += 2;
-    
+
     rr = &r->head;
     for(i = 0; i < r->h.ancount; i++) {
 	if(parse_record(data, end_data, &p, rr) != 0) {
-	    dns_free_data(r);
+	    rk_dns_free_data(r);
 	    return NULL;
 	}
 	rr = &(*rr)->next;
     }
     for(i = 0; i < r->h.nscount; i++) {
 	if(parse_record(data, end_data, &p, rr) != 0) {
-	    dns_free_data(r);
+	    rk_dns_free_data(r);
 	    return NULL;
 	}
 	rr = &(*rr)->next;
     }
     for(i = 0; i < r->h.arcount; i++) {
 	if(parse_record(data, end_data, &p, rr) != 0) {
-	    dns_free_data(r);
+	    rk_dns_free_data(r);
 	    return NULL;
 	}
 	rr = &(*rr)->next;
@@ -500,71 +504,87 @@ parse_reply(const unsigned char *data, size_t len)
 #endif
 #endif
 
-static struct dns_reply *
+#if defined(HAVE_DNS_SEARCH)
+#define resolve_search(h,n,c,t,r,l) \
+    	((int)dns_search(h,n,c,t,r,l,(struct sockaddr *)&from,&fromsize))
+#define resolve_free_handle(h) dns_free(h)
+#elif defined(HAVE_RES_NSEARCH)
+#define resolve_search(h,n,c,t,r,l) res_nsearch(h,n,c,t,r,l)
+#define resolve_free_handle(h) rk_res_free(h);
+#else
+#define resolve_search(h,n,c,t,r,l) res_search(n,c,t,r,l)
+#define handle 0
+#define resolve_free_handle(h)
+#endif
+
+
+static struct rk_dns_reply *
 dns_lookup_int(const char *domain, int rr_class, int rr_type)
 {
-    struct dns_reply *r;
-    unsigned char *reply = NULL;
-    int size;
-    int len;
-#ifdef HAVE_RES_NSEARCH
+    struct rk_dns_reply *r;
+    void *reply = NULL;
+    int size, len;
+#if defined(HAVE_DNS_SEARCH)
+    struct sockaddr_storage from;
+    uint32_t fromsize = sizeof(from);
+    dns_handle_t handle;
+
+    handle = dns_open(NULL);
+    if (handle == NULL)
+	return NULL;
+#elif defined(HAVE_RES_NSEARCH)
     struct __res_state state;
+    struct __res_state *handle = &state;
+
     memset(&state, 0, sizeof(state));
-    if(res_ninit(&state))
+    if(res_ninit(handle))
 	return NULL; /* is this the best we can do? */
-#elif defined(HAVE__RES)
-    u_long old_options = 0;
 #endif
-    
-    size = 0;
-    len = 1000;
-    do {
+
+    len = 1500;
+    while(1) {
 	if (reply) {
 	    free(reply);
 	    reply = NULL;
 	}
-	if (size <= len)
-	    size = len;
 	if (_resolve_debug) {
-#ifdef HAVE_RES_NSEARCH
+#if defined(HAVE_DNS_SEARCH)
+	    dns_set_debug(handle, 1);
+#elif defined(HAVE_RES_NSEARCH)
 	    state.options |= RES_DEBUG;
-#elif defined(HAVE__RES)
-	    old_options = _res.options;
-	    _res.options |= RES_DEBUG;
 #endif
 	    fprintf(stderr, "dns_lookup(%s, %d, %s), buffer size %d\n", domain,
-		    rr_class, dns_type_to_string(rr_type), size);
+		    rr_class, rk_dns_type_to_string(rr_type), len);
 	}
-	reply = malloc(size);
+	reply = malloc(len);
 	if (reply == NULL) {
-#ifdef HAVE_RES_NSEARCH
-	    rk_res_free(&state);
-#endif
+	    resolve_free_handle(handle);
 	    return NULL;
 	}
-#ifdef HAVE_RES_NSEARCH
-	len = res_nsearch(&state, domain, rr_class, rr_type, reply, size);
-#else
-	len = res_search(domain, rr_class, rr_type, reply, size);
-#endif
+
+	size = resolve_search(handle, domain, rr_class, rr_type, reply, len);
+
 	if (_resolve_debug) {
-#if defined(HAVE__RES) && !defined(HAVE_RES_NSEARCH)
-	    _res.options = old_options;
-#endif
 	    fprintf(stderr, "dns_lookup(%s, %d, %s) --> %d\n",
-		    domain, rr_class, dns_type_to_string(rr_type), len);
-	}
-	if (len < 0) {
-#ifdef HAVE_RES_NSEARCH
-	    rk_res_free(&state);
-#endif
+		    domain, rr_class, rk_dns_type_to_string(rr_type), size);
+	}
+	if (size > len) {
+	    /* resolver thinks it know better, go for it */
+	    len = size;
+	} else if (size > 0) {
+	    /* got a good reply */
+	    break;
+	} else if (size <= 0 && len < rk_DNS_MAX_PACKET_SIZE) {
+	    len *= 2;
+	    if (len > rk_DNS_MAX_PACKET_SIZE)
+		len = rk_DNS_MAX_PACKET_SIZE;
+	} else {
+	    /* the end, leave */
+	    resolve_free_handle(handle);
 	    free(reply);
 	    return NULL;
 	}
-    } while (size < len && len < rk_DNS_MAX_PACKET_SIZE);
-#ifdef HAVE_RES_NSEARCH
-    rk_res_free(&state);
-#endif
+    }
 
     len = min(len, size);
     r = parse_reply(reply, len);
@@ -572,41 +592,39 @@ dns_lookup_int(const char *domain, int rr_class, int rr_type)
     return r;
 }
 
-struct dns_reply * ROKEN_LIB_FUNCTION
-dns_lookup(const char *domain, const char *type_name)
+ROKEN_LIB_FUNCTION struct rk_dns_reply * ROKEN_LIB_CALL
+rk_dns_lookup(const char *domain, const char *type_name)
 {
     int type;
-    
-    type = dns_string_to_type(type_name);
+
+    type = rk_dns_string_to_type(type_name);
     if(type == -1) {
 	if(_resolve_debug)
-	    fprintf(stderr, "dns_lookup: unknown resource type: `%s'\n", 
+	    fprintf(stderr, "dns_lookup: unknown resource type: `%s'\n",
 		    type_name);
 	return NULL;
     }
-    return dns_lookup_int(domain, C_IN, type);
+    return dns_lookup_int(domain, rk_ns_c_in, type);
 }
 
+#endif	/* !HAVE_WINDNS */
+
 static int
 compare_srv(const void *a, const void *b)
 {
-    const struct resource_record *const* aa = a, *const* bb = b;
+    const struct rk_resource_record *const* aa = a, *const* bb = b;
 
     if((*aa)->u.srv->priority == (*bb)->u.srv->priority)
 	return ((*aa)->u.srv->weight - (*bb)->u.srv->weight);
     return ((*aa)->u.srv->priority - (*bb)->u.srv->priority);
 }
 
-#ifndef HAVE_RANDOM
-#define random() rand()
-#endif
-
 /* try to rearrange the srv-records by the algorithm in RFC2782 */
-void ROKEN_LIB_FUNCTION
-dns_srv_order(struct dns_reply *r)
+ROKEN_LIB_FUNCTION void ROKEN_LIB_CALL
+rk_dns_srv_order(struct rk_dns_reply *r)
 {
-    struct resource_record **srvs, **ss, **headp;
-    struct resource_record *rr;
+    struct rk_resource_record **srvs, **ss, **headp;
+    struct rk_resource_record *rr;
     int num_srv = 0;
 
 #if defined(HAVE_INITSTATE) && defined(HAVE_SETSTATE)
@@ -614,7 +632,9 @@ dns_srv_order(struct dns_reply *r)
     char *oldstate;
 #endif
 
-    for(rr = r->head; rr; rr = rr->next) 
+    rk_random_init();
+
+    for(rr = r->head; rr; rr = rr->next)
 	if(rr->type == rk_ns_t_srv)
 	    num_srv++;
 
@@ -624,7 +644,7 @@ dns_srv_order(struct dns_reply *r)
     srvs = malloc(num_srv * sizeof(*srvs));
     if(srvs == NULL)
 	return; /* XXX not much to do here */
-    
+
     /* unlink all srv-records from the linked list and put them in
        a vector */
     for(ss = srvs, headp = &r->head; *headp; )
@@ -635,7 +655,7 @@ dns_srv_order(struct dns_reply *r)
 	    ss++;
 	} else
 	    headp = &(*headp)->next;
-    
+
     /* sort them by priority and weight */
     qsort(srvs, num_srv, sizeof(*srvs), compare_srv);
 
@@ -644,10 +664,10 @@ dns_srv_order(struct dns_reply *r)
 #endif
 
     headp = &r->head;
-    
+
     for(ss = srvs; ss < srvs + num_srv; ) {
 	int sum, rnd, count;
-	struct resource_record **ee, **tt;
+	struct rk_resource_record **ee, **tt;
 	/* find the last record with the same priority and count the
            sum of all weights */
 	for(sum = 0, tt = ss; tt < srvs + num_srv; tt++) {
@@ -660,7 +680,7 @@ dns_srv_order(struct dns_reply *r)
 	/* ss is now the first record of this priority and ee is the
            first of the next */
 	while(ss < ee) {
-	    rnd = random() % (sum + 1);
+	    rnd = rk_random() % (sum + 1);
 	    for(count = 0, tt = ss; ; tt++) {
 		if(*tt == NULL)
 		    continue;
@@ -682,7 +702,7 @@ dns_srv_order(struct dns_reply *r)
 		ss++;
 	}
     }
-    
+
 #if defined(HAVE_INITSTATE) && defined(HAVE_SETSTATE)
     setstate(oldstate);
 #endif
@@ -690,21 +710,233 @@ dns_srv_order(struct dns_reply *r)
     return;
 }
 
+#ifdef HAVE_WINDNS
+
+#include <WinDNS.h>
+
+static struct rk_resource_record *
+parse_dns_record(PDNS_RECORD pRec)
+{
+    struct rk_resource_record * rr;
+
+    if (pRec == NULL)
+	return NULL;
+
+    rr = calloc(1, sizeof(*rr));
+
+    rr->domain = strdup(pRec->pName);
+    rr->type = pRec->wType;
+    rr->class = 0;
+    rr->ttl = pRec->dwTtl;
+    rr->size = 0;
+
+    switch (rr->type) {
+    case rk_ns_t_ns:
+    case rk_ns_t_cname:
+    case rk_ns_t_ptr:
+	rr->u.txt = strdup(pRec->Data.NS.pNameHost);
+	if(rr->u.txt == NULL) {
+	    dns_free_rr(rr);
+	    return NULL;
+	}
+	break;
+
+    case rk_ns_t_mx:
+    case rk_ns_t_afsdb:{
+	size_t hostlen = strnlen(pRec->Data.MX.pNameExchange, DNS_MAX_NAME_LENGTH);
+
+	rr->u.mx = (struct mx_record *)malloc(sizeof(struct mx_record) +
+					      hostlen);
+	if (rr->u.mx == NULL) {
+	    dns_free_rr(rr);
+	    return NULL;
+	}
+
+	strcpy_s(rr->u.mx->domain, hostlen + 1, pRec->Data.MX.pNameExchange);
+	rr->u.mx->preference = pRec->Data.MX.wPreference;
+	break;
+    }
+
+    case rk_ns_t_srv:{
+	size_t hostlen = strnlen(pRec->Data.SRV.pNameTarget, DNS_MAX_NAME_LENGTH);
+
+	rr->u.srv =
+	    (struct srv_record*)malloc(sizeof(struct srv_record) +
+				       hostlen);
+	if(rr->u.srv == NULL) {
+	    dns_free_rr(rr);
+	    return NULL;
+	}
+
+	rr->u.srv->priority = pRec->Data.SRV.wPriority;
+	rr->u.srv->weight = pRec->Data.SRV.wWeight;
+	rr->u.srv->port = pRec->Data.SRV.wPort;
+	strcpy_s(rr->u.srv->target, hostlen + 1, pRec->Data.SRV.pNameTarget);
+
+	break;
+    }
+
+    case rk_ns_t_txt:{
+	size_t len;
+
+	if (pRec->Data.TXT.dwStringCount == 0) {
+	    rr->u.txt = strdup("");
+	    break;
+	}
+
+	len = strnlen(pRec->Data.TXT.pStringArray[0], DNS_MAX_TEXT_STRING_LENGTH);
+
+	rr->u.txt = (char *)malloc(len + 1);
+	strcpy_s(rr->u.txt, len + 1, pRec->Data.TXT.pStringArray[0]);
+
+	break;
+    }
+
+    case rk_ns_t_key : {
+	size_t key_len;
+
+	if (pRec->wDataLength < 4) {
+	    dns_free_rr(rr);
+	    return NULL;
+	}
+
+	key_len = pRec->wDataLength - 4;
+	rr->u.key = malloc (sizeof(*rr->u.key) + key_len - 1);
+	if (rr->u.key == NULL) {
+	    dns_free_rr(rr);
+	    return NULL;
+	}
+
+	rr->u.key->flags     = pRec->Data.KEY.wFlags;
+	rr->u.key->protocol  = pRec->Data.KEY.chProtocol;
+	rr->u.key->algorithm = pRec->Data.KEY.chAlgorithm;
+	rr->u.key->key_len   = key_len;
+	memcpy_s (rr->u.key->key_data, key_len,
+		  pRec->Data.KEY.Key, key_len);
+	break;
+    }
+
+    case rk_ns_t_sig : {
+	size_t sig_len, hostlen;
+
+	if(pRec->wDataLength <= 18) {
+	    dns_free_rr(rr);
+	    return NULL;
+	}
+
+	sig_len = pRec->wDataLength;
+
+	hostlen = strnlen(pRec->Data.SIG.pNameSigner, DNS_MAX_NAME_LENGTH);
+
+	rr->u.sig = malloc(sizeof(*rr->u.sig)
+			      + hostlen + sig_len);
+	if (rr->u.sig == NULL) {
+	    dns_free_rr(rr);
+	    return NULL;
+	}
+	rr->u.sig->type           = pRec->Data.SIG.wTypeCovered;
+	rr->u.sig->algorithm      = pRec->Data.SIG.chAlgorithm;
+	rr->u.sig->labels         = pRec->Data.SIG.chLabelCount;
+	rr->u.sig->orig_ttl       = pRec->Data.SIG.dwOriginalTtl;
+	rr->u.sig->sig_expiration = pRec->Data.SIG.dwExpiration;
+	rr->u.sig->sig_inception  = pRec->Data.SIG.dwTimeSigned;
+	rr->u.sig->key_tag        = pRec->Data.SIG.wKeyTag;
+	rr->u.sig->sig_len        = sig_len;
+	memcpy_s (rr->u.sig->sig_data, sig_len,
+		  pRec->Data.SIG.Signature, sig_len);
+	rr->u.sig->signer         = &rr->u.sig->sig_data[sig_len];
+	strcpy_s(rr->u.sig->signer, hostlen + 1, pRec->Data.SIG.pNameSigner);
+	break;
+    }
+
+#ifdef DNS_TYPE_DS
+    case rk_ns_t_ds: {
+	rr->u.ds = malloc (sizeof(*rr->u.ds) + pRec->Data.DS.wDigestLength - 1);
+	if (rr->u.ds == NULL) {
+	    dns_free_rr(rr);
+	    return NULL;
+	}
+
+	rr->u.ds->key_tag     = pRec->Data.DS.wKeyTag;
+	rr->u.ds->algorithm   = pRec->Data.DS.chAlgorithm;
+	rr->u.ds->digest_type = pRec->Data.DS.chDigestType;
+	rr->u.ds->digest_len  = pRec->Data.DS.wDigestLength;
+	memcpy_s (rr->u.ds->digest_data, pRec->Data.DS.wDigestLength,
+		  pRec->Data.DS.Digest, pRec->Data.DS.wDigestLength);
+	break;
+    }
+#endif
+
+    default:
+	dns_free_rr(rr);
+	return NULL;
+    }
+
+    rr->next = parse_dns_record(pRec->pNext);
+    return rr;
+}
+
+ROKEN_LIB_FUNCTION struct rk_dns_reply * ROKEN_LIB_CALL
+rk_dns_lookup(const char *domain, const char *type_name)
+{
+    DNS_STATUS status;
+    int type;
+    PDNS_RECORD pRec = NULL;
+    struct rk_dns_reply * r = NULL;
+
+    __try {
+
+	type = rk_dns_string_to_type(type_name);
+	if(type == -1) {
+	    if(_resolve_debug)
+		fprintf(stderr, "dns_lookup: unknown resource type: `%s'\n",
+			type_name);
+	    return NULL;
+	}
+
+	status = DnsQuery_UTF8(domain, type, DNS_QUERY_STANDARD, NULL,
+			       &pRec, NULL);
+	if (status != ERROR_SUCCESS)
+	    return NULL;
+
+	r = calloc(1, sizeof(*r));
+	r->q.domain = strdup(domain);
+	r->q.type = type;
+	r->q.class = 0;
+
+	r->head = parse_dns_record(pRec);
+
+	if (r->head == NULL) {
+	    rk_dns_free_data(r);
+	    return NULL;
+	} else {
+	    return r;
+	}
+
+    } __finally {
+
+	if (pRec)
+	    DnsRecordListFree(pRec, DnsFreeRecordList);
+
+    }
+}
+#endif	/* HAVE_WINDNS */
+
 #else /* NOT defined(HAVE_RES_SEARCH) && defined(HAVE_DN_EXPAND) */
 
-struct dns_reply * ROKEN_LIB_FUNCTION
-dns_lookup(const char *domain, const char *type_name)
+ROKEN_LIB_FUNCTION struct rk_dns_reply * ROKEN_LIB_CALL
+rk_dns_lookup(const char *domain, const char *type_name)
 {
     return NULL;
 }
 
-void ROKEN_LIB_FUNCTION
-dns_free_data(struct dns_reply *r)
+ROKEN_LIB_FUNCTION void ROKEN_LIB_CALL
+rk_dns_free_data(struct rk_dns_reply *r)
 {
 }
 
-void ROKEN_LIB_FUNCTION
-dns_srv_order(struct dns_reply *r)
+ROKEN_LIB_FUNCTION void ROKEN_LIB_CALL
+rk_dns_srv_order(struct rk_dns_reply *r)
 {
 }