X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=src%2Fnetwork%2Fres_mkquery.c;h=614bf7864b489046442efd01d96fc3a0eba5adf4;hb=83b858f83b658bd34eca5d8ad4d145f673ae7e5e;hp=f7e4e9c6b8be73f0b67575a8c125040387f6d7bb;hpb=8312f7f60f9dfe88118163d38b8282abf04aac2f;p=musl

diff --git a/src/network/res_mkquery.c b/src/network/res_mkquery.c
index f7e4e9c6..614bf786 100644
--- a/src/network/res_mkquery.c
+++ b/src/network/res_mkquery.c
@@ -1,7 +1,6 @@
 #include <resolv.h>
 #include <string.h>
 #include <time.h>
-#include "libc.h"
 
 int __res_mkquery(int op, const char *dname, int class, int type,
 	const unsigned char *data, int datalen,
@@ -10,14 +9,19 @@ int __res_mkquery(int op, const char *dname, int class, int type,
 	int id, i, j;
 	unsigned char q[280];
 	struct timespec ts;
-	size_t l = strnlen(dname, 256);
+	size_t l = strnlen(dname, 255);
+	int n;
 
-	if (l-1>=254 || buflen<18+l || op>15u || class>255u || type>255u)
+	if (l && dname[l-1]=='.') l--;
+	if (l && dname[l-1]=='.') return -1;
+	n = 17+l+!!l;
+	if (l>253 || buflen<n || op>15u || class>255u || type>255u)
 		return -1;
 
 	/* Construct query template - ID will be filled later */
-	memset(q, 0, 18+l);
+	memset(q, 0, n);
 	q[2] = op*8 + 1;
+	q[3] = 32; /* AD */
 	q[5] = 1;
 	memcpy((char *)q+13, dname, l);
 	for (i=13; q[i]; i=j+1) {
@@ -34,8 +38,8 @@ int __res_mkquery(int op, const char *dname, int class, int type,
 	q[0] = id/256;
 	q[1] = id;
 
-	memcpy(buf, q, 18+l);
-	return 18+l;
+	memcpy(buf, q, n);
+	return n;
 }
 
 weak_alias(__res_mkquery, res_mkquery);