1 files changed, 195 insertions, 0 deletions

diff --git a/src/lib/libc/net/res_mkquery.c b/src/lib/libc/net/res_mkquery.c
new file mode 100644
index 0000000000..3e7e2ae5d3
--- /dev/null
+++ b/src/lib/libc/net/res_mkquery.c
@@ -0,0 +1,195 @@
+/*      $OpenBSD: res_mkquery.c,v 1.8 1997/04/13 22:37:21 provos Exp $  */
+
+/*
+ * ++Copyright++ 1985, 1993
+ * -
+ * Copyright (c) 1985, 1993
+ *    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:
+ * 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. 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.
+ * 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
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS 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.
+ * -
+ * Portions Copyright (c) 1993 by Digital Equipment Corporation.
+ * 
+ * Permission to use, copy, modify, and 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, and that
+ * the name of Digital Equipment Corporation not be used in advertising or
+ * publicity pertaining to distribution of the document or software without
+ * specific, written prior permission.
+ * 
+ * THE SOFTWARE IS PROVIDED "AS IS" AND DIGITAL EQUIPMENT CORP. DISCLAIMS ALL
+ * WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS.   IN NO EVENT SHALL DIGITAL EQUIPMENT
+ * CORPORATION 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.
+ * -
+ * --Copyright--
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+#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 1.8 1997/04/13 22:37:21 provos 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 <stdio.h>
+#include <netdb.h>
+#include <resolv.h>
+#include <string.h>
+
+/*
+ * Form all types of queries.
+ * Returns the size of the result or -1.
+ */
+/* ARGSUSED */
+int
+res_mkquery(op, dname, class, type, data, datalen, newrr_in, buf, buflen)
+        int op;                 /* opcode of query */
+        const char *dname;      /* domain name */
+        int class, type;        /* class and type of query */
+        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 */
+        int buflen;             /* size of buffer */
+{
+        register HEADER *hp;
+        register u_char *cp;
+        register int n;
+        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",
+                       op, dname, class, type);
+#endif
+        /*
+         * Initialize header fields.
+         *
+         * A special random number generator is used to create non predictable
+         * and non repeating ids over a long period. It also avoids reuse
+         * by switching between two distinct number cycles.
+         */
+
+        if ((buf == NULL) || (buflen < HFIXEDSZ))
+                return (-1);
+        bzero(buf, HFIXEDSZ);
+        hp = (HEADER *) buf;
+        _res.id = res_randomid();
+        hp->id = htons(_res.id);
+        hp->opcode = op;
+        hp->rd = (_res.options & RES_RECURSE) != 0;
+        hp->rcode = NOERROR;
+        cp = buf + HFIXEDSZ;
+        buflen -= HFIXEDSZ;
+        dpp = dnptrs;
+        *dpp++ = buf;
+        *dpp++ = NULL;
+        lastdnptr = dnptrs + sizeof dnptrs / sizeof dnptrs[0];
+        /*
+         * perform opcode specific processing
+         */
+        switch (op) {
+        case QUERY:     /*FALLTHROUGH*/
+        case NS_NOTIFY_OP:
+                if ((buflen -= QFIXEDSZ) < 0)
+                        return (-1);
+                if ((n = dn_comp(dname, cp, buflen, dnptrs, lastdnptr)) < 0)
+                        return (-1);
+                cp += n;
+                buflen -= n;
+                __putshort(type, cp);
+                cp += INT16SZ;
+                __putshort(class, cp);
+                cp += INT16SZ;
+                hp->qdcount = htons(1);
+                if (op == QUERY || data == NULL)
+                        break;
+                /*
+                 * Make an additional record for completion domain.
+                 */
+                buflen -= RRFIXEDSZ;
+                n = dn_comp((char *)data, cp, buflen, dnptrs, lastdnptr);
+                if (n < 0)
+                        return (-1);
+                cp += n;
+                buflen -= n;
+                __putshort(T_NULL, cp);
+                cp += INT16SZ;
+                __putshort(class, cp);
+                cp += INT16SZ;
+                __putlong(0, cp);
+                cp += INT32SZ;
+                __putshort(0, cp);
+                cp += INT16SZ;
+                hp->arcount = htons(1);
+                break;
+
+        case IQUERY:
+                /*
+                 * Initialize answer section
+                 */
+                if (buflen < 1 + RRFIXEDSZ + datalen)
+                        return (-1);
+                *cp++ = '\0';   /* no domain name */
+                __putshort(type, cp);
+                cp += INT16SZ;
+                __putshort(class, cp);
+                cp += INT16SZ;
+                __putlong(0, cp);
+                cp += INT32SZ;
+                __putshort(datalen, cp);
+                cp += INT16SZ;
+                if (datalen) {
+                        bcopy(data, cp, datalen);
+                        cp += datalen;
+                }
+                hp->ancount = htons(1);
+                break;
+
+        default:
+                return (-1);
+        }
+        return (cp - buf);
+}