initial import of NetBSD tree

1 files changed, 236 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..25f025e147
--- /dev/null
+++ b/src/lib/libc/net/res_mkquery.c
@@ -0,0 +1,236 @@
+/*      $NetBSD: res_mkquery.c,v 1.5 1995/02/25 06:20:58 cgd Exp $      */
+
+/*-
+ * 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[] = "$Id: res_mkquery.c,v 4.9.1.2 1993/05/17 10:00:01 vixie Exp ";
+#else
+static char rcsid[] = "$NetBSD: res_mkquery.c,v 1.5 1995/02/25 06:20:58 cgd Exp $";
+#endif
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/param.h>
+#include <netinet/in.h>
+#include <arpa/nameser.h>
+#include <resolv.h>
+#include <stdio.h>
+#include <string.h>
+
+/*
+ * Form all types of queries.
+ * Returns the size of the result or -1.
+ */
+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 char *data;               /* resource record data */
+        int datalen;            /* length of data */
+        const char *newrr_in;   /* new rr for modify or append */
+        char *buf;              /* buffer to put query */
+        int buflen;             /* size of buffer */
+{
+        register HEADER *hp;
+        register char *cp;
+        register int n;
+        struct rrec *newrr = (struct rrec *) newrr_in;
+        char *dnptrs[10], **dpp, **lastdnptr;
+
+#ifdef DEBUG
+        if (_res.options & RES_DEBUG)
+                printf(";; res_mkquery(%d, %s, %d, %d)\n",
+                       op, dname, class, type);
+#endif
+        /*
+         * Initialize header fields.
+         */
+        if ((buf == NULL) || (buflen < sizeof(HEADER)))
+                return(-1);
+        bzero(buf, sizeof(HEADER));
+        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);
+        dpp = dnptrs;
+        *dpp++ = buf;
+        *dpp++ = NULL;
+        lastdnptr = dnptrs + sizeof(dnptrs)/sizeof(dnptrs[0]);
+        /*
+         * perform opcode specific processing
+         */
+        switch (op) {
+        case QUERY:
+                if ((buflen -= QFIXEDSZ) < 0)
+                        return(-1);
+                if ((n = dn_comp((u_char *)dname, (u_char *)cp, buflen,
+                    (u_char **)dnptrs, (u_char **)lastdnptr)) < 0)
+                        return (-1);
+                cp += n;
+                buflen -= n;
+                __putshort(type, (u_char *)cp);
+                cp += sizeof(u_int16_t);
+                __putshort(class, (u_char *)cp);
+                cp += sizeof(u_int16_t);
+                hp->qdcount = htons(1);
+                if (op == QUERY || data == NULL)
+                        break;
+                /*
+                 * Make an additional record for completion domain.
+                 */
+                buflen -= RRFIXEDSZ;
+                if ((n = dn_comp((u_char *)data, (u_char *)cp, buflen,
+                    (u_char **)dnptrs, (u_char **)lastdnptr)) < 0)
+                        return (-1);
+                cp += n;
+                buflen -= n;
+                __putshort(T_NULL, (u_char *)cp);
+                cp += sizeof(u_int16_t);
+                __putshort(class, (u_char *)cp);
+                cp += sizeof(u_int16_t);
+                __putlong(0, (u_char *)cp);
+                cp += sizeof(u_int32_t);
+                __putshort(0, (u_char *)cp);
+                cp += sizeof(u_int16_t);
+                hp->arcount = htons(1);
+                break;
+
+        case IQUERY:
+                /*
+                 * Initialize answer section
+                 */
+                if (buflen < 1 + RRFIXEDSZ + datalen)
+                        return (-1);
+                *cp++ = '\0';   /* no domain name */
+                __putshort(type, (u_char *)cp);
+                cp += sizeof(u_int16_t);
+                __putshort(class, (u_char *)cp);
+                cp += sizeof(u_int16_t);
+                __putlong(0, (u_char *)cp);
+                cp += sizeof(u_int32_t);
+                __putshort(datalen, (u_char *)cp);
+                cp += sizeof(u_int16_t);
+                if (datalen) {
+                        bcopy(data, cp, datalen);
+                        cp += datalen;
+                }
+                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 */
+        }
+        return (cp - buf);
+}