Integrate BIND 4.9.5 resolver and associated routines.

Includes the DNS aware getnetby*() routines and IPv6 support.

1 files changed, 47 insertions, 92 deletions

diff --git a/src/lib/libc/net/res_mkquery.c b/src/lib/libc/net/res_mkquery.c
index 6fbd6a3859..5faba01748 100644
--- a/src/lib/libc/net/res_mkquery.c
+++ b/src/lib/libc/net/res_mkquery.c
@@ -1,7 +1,11 @@
-/*-
+/*      $OpenBSD: res_mkquery.c,v 1.6 1997/03/13 19:07:39 downsj Exp $  */
+
+/*
+ * ++Copyright++ 1985, 1993
+ * -
  * Copyright (c) 1985, 1993
- *      The Regents of the University of California.  All rights reserved.
- *
+ *    The Regents of the University of California.  All rights reserved.
+ * 
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
@@ -12,12 +16,12 @@
  *    documentation and/or other materials provided with the distribution.
  * 3. All advertising materials mentioning features or use of this software
  *    must display the following acknowledgement:
- *      This product includes software developed by the University of
- *      California, Berkeley and its contributors.
+ *      This product includes software developed by the University of
+ *      California, Berkeley and its contributors.
  * 4. Neither the name of the University 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 REGENTS 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
@@ -52,14 +56,22 @@
  */
 
 #if defined(LIBC_SCCS) && !defined(lint)
-static char rcsid[] = "$OpenBSD: res_mkquery.c,v 1.5 1996/12/14 06:49:39 tholo Exp $";
+#if 0
+static char sccsid[] = "@(#)res_mkquery.c       8.1 (Berkeley) 6/4/93";
+static char rcsid[] = "$From: res_mkquery.c,v 8.5 1996/08/27 08:33:28 vixie Exp $";
+#else
+static char rcsid[] = "$OpenBSD: res_mkquery.c,v 1.6 1997/03/13 19:07:39 downsj Exp $";
+#endif
 #endif /* LIBC_SCCS and not lint */
 
+#include <sys/types.h>
 #include <sys/param.h>
 #include <netinet/in.h>
 #include <arpa/nameser.h>
-#include <resolv.h>
+
 #include <stdio.h>
+#include <netdb.h>
+#include <resolv.h>
 #include <string.h>
 
 /*
@@ -70,9 +82,9 @@ static char rcsid[] = "$OpenBSD: res_mkquery.c,v 1.5 1996/12/14 06:49:39 tholo E
 int
 res_mkquery(op, dname, class, type, data, datalen, newrr_in, buf, buflen)
         int op;                 /* opcode of query */
-        const char *dname;              /* domain name */
+        const char *dname;      /* domain name */
         int class, type;        /* class and type of query */
-        const u_char *data;             /* resource record data */
+        const u_char *data;     /* resource record data */
         int datalen;            /* length of data */
         const u_char *newrr_in; /* new rr for modify or append */
         u_char *buf;            /* buffer to put query */
@@ -81,11 +93,12 @@ res_mkquery(op, dname, class, type, data, datalen, newrr_in, buf, buflen)
         register HEADER *hp;
         register u_char *cp;
         register int n;
-#ifdef ALLOW_UPDATES
-        struct rrec *newrr = (struct rrec *) newrr_in;
-#endif /* ALLOW_UPDATES */
-        u_char *dnptrs[10], **dpp, **lastdnptr;
+        u_char *dnptrs[20], **dpp, **lastdnptr;
 
+        if ((_res.options & RES_INIT) == 0 && res_init() == -1) {
+                h_errno = NETDB_INTERNAL;
+                return (-1);
+        }
 #ifdef DEBUG
         if (_res.options & RES_DEBUG)
                 printf(";; res_mkquery(%d, %s, %d, %d)\n",
@@ -94,37 +107,36 @@ res_mkquery(op, dname, class, type, data, datalen, newrr_in, buf, buflen)
         /*
          * Initialize header fields.
          */
-        if ((buf == NULL) || (buflen < sizeof(HEADER)))
-                return(-1);
-        bzero(buf, sizeof(HEADER));
+        if ((buf == NULL) || (buflen < HFIXEDSZ))
+                return (-1);
+        bzero(buf, HFIXEDSZ);
         hp = (HEADER *) buf;
         hp->id = htons(++_res.id);
         hp->opcode = op;
-        hp->pr = (_res.options & RES_PRIMARY) != 0;
         hp->rd = (_res.options & RES_RECURSE) != 0;
         hp->rcode = NOERROR;
-        cp = buf + sizeof(HEADER);
-        buflen -= sizeof(HEADER);
+        cp = buf + HFIXEDSZ;
+        buflen -= HFIXEDSZ;
         dpp = dnptrs;
         *dpp++ = buf;
         *dpp++ = NULL;
-        lastdnptr = dnptrs + sizeof(dnptrs)/sizeof(dnptrs[0]);
+        lastdnptr = dnptrs + sizeof dnptrs / sizeof dnptrs[0];
         /*
          * perform opcode specific processing
          */
         switch (op) {
-        case QUERY:
+        case QUERY:     /*FALLTHROUGH*/
         case NS_NOTIFY_OP:
                 if ((buflen -= QFIXEDSZ) < 0)
-                        return(-1);
+                        return (-1);
                 if ((n = dn_comp(dname, cp, buflen, dnptrs, lastdnptr)) < 0)
                         return (-1);
                 cp += n;
                 buflen -= n;
                 __putshort(type, cp);
-                cp += sizeof(u_int16_t);
+                cp += INT16SZ;
                 __putshort(class, cp);
-                cp += sizeof(u_int16_t);
+                cp += INT16SZ;
                 hp->qdcount = htons(1);
                 if (op == QUERY || data == NULL)
                         break;
@@ -132,18 +144,19 @@ res_mkquery(op, dname, class, type, data, datalen, newrr_in, buf, buflen)
                  * Make an additional record for completion domain.
                  */
                 buflen -= RRFIXEDSZ;
-                if ((n = dn_comp((const char *)data, cp, buflen, dnptrs, lastdnptr)) < 0)
+                n = dn_comp((char *)data, cp, buflen, dnptrs, lastdnptr);
+                if (n < 0)
                         return (-1);
                 cp += n;
                 buflen -= n;
                 __putshort(T_NULL, cp);
-                cp += sizeof(u_int16_t);
+                cp += INT16SZ;
                 __putshort(class, cp);
-                cp += sizeof(u_int16_t);
+                cp += INT16SZ;
                 __putlong(0, cp);
-                cp += sizeof(u_int32_t);
+                cp += INT32SZ;
                 __putshort(0, cp);
-                cp += sizeof(u_int16_t);
+                cp += INT16SZ;
                 hp->arcount = htons(1);
                 break;
 
@@ -155,13 +168,13 @@ res_mkquery(op, dname, class, type, data, datalen, newrr_in, buf, buflen)
                         return (-1);
                 *cp++ = '\0';   /* no domain name */
                 __putshort(type, cp);
-                cp += sizeof(u_int16_t);
+                cp += INT16SZ;
                 __putshort(class, cp);
-                cp += sizeof(u_int16_t);
+                cp += INT16SZ;
                 __putlong(0, cp);
-                cp += sizeof(u_int32_t);
+                cp += INT32SZ;
                 __putshort(datalen, cp);
-                cp += sizeof(u_int16_t);
+                cp += INT16SZ;
                 if (datalen) {
                         bcopy(data, cp, datalen);
                         cp += datalen;
@@ -169,64 +182,6 @@ res_mkquery(op, dname, class, type, data, datalen, newrr_in, buf, buflen)
                 hp->ancount = htons(1);
                 break;
 
-#ifdef ALLOW_UPDATES
-        /*
-         * For UPDATEM/UPDATEMA, do UPDATED/UPDATEDA followed by UPDATEA
-         * (Record to be modified is followed by its replacement in msg.)
-         */
-        case UPDATEM:
-        case UPDATEMA:
-
-        case UPDATED:
-                /*
-                 * The res code for UPDATED and UPDATEDA is the same; user
-                 * calls them differently: specifies data for UPDATED; server
-                 * ignores data if specified for UPDATEDA.
-                 */
-        case UPDATEDA:
-                buflen -= RRFIXEDSZ + datalen;
-                if ((n = dn_comp(dname, cp, buflen, dnptrs, lastdnptr)) < 0)
-                        return (-1);
-                cp += n;
-                __putshort(type, cp);
-                cp += sizeof(u_int16_t);
-                __putshort(class, cp);
-                cp += sizeof(u_int16_t);
-                __putlong(0, cp);
-                cp += sizeof(u_int32_t);
-                __putshort(datalen, cp);
-                cp += sizeof(u_int16_t);
-                if (datalen) {
-                        bcopy(data, cp, datalen);
-                        cp += datalen;
-                }
-                if ( (op == UPDATED) || (op == UPDATEDA) ) {
-                        hp->ancount = htons(0);
-                        break;
-                }
-                /* Else UPDATEM/UPDATEMA, so drop into code for UPDATEA */
-
-        case UPDATEA:   /* Add new resource record */
-                buflen -= RRFIXEDSZ + datalen;
-                if ((n = dn_comp(dname, cp, buflen, dnptrs, lastdnptr)) < 0)
-                        return (-1);
-                cp += n;
-                __putshort(newrr->r_type, cp);
-                cp += sizeof(u_int16_t);
-                __putshort(newrr->r_class, cp);
-                cp += sizeof(u_int16_t);
-                __putlong(0, cp);
-                cp += sizeof(u_int32_t);
-                __putshort(newrr->r_size, cp);
-                cp += sizeof(u_int16_t);
-                if (newrr->r_size) {
-                        bcopy(newrr->r_data, cp, newrr->r_size);
-                        cp += newrr->r_size;
-                }
-                hp->ancount = htons(0);
-                break;
-
-#endif /* ALLOW_UPDATES */
         default:
                 return (-1);
         }