diff options
Diffstat (limited to 'lib/libc/net/res_mkquery.c')
| -rw-r--r-- | lib/libc/net/res_mkquery.c | 246 |
1 files changed, 0 insertions, 246 deletions
diff --git a/lib/libc/net/res_mkquery.c b/lib/libc/net/res_mkquery.c deleted file mode 100644 index 7ef1ace..0000000 --- a/lib/libc/net/res_mkquery.c +++ /dev/null @@ -1,246 +0,0 @@ -/* - * 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. - */ - -/* - * Portions Copyright (c) 1996 by Internet Software Consortium. - * - * 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. - * - * THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS - * ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES - * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE - * CONSORTIUM 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. - */ - -#if defined(LIBC_SCCS) && !defined(lint) -static char sccsid[] = "@(#)res_mkquery.c 8.1 (Berkeley) 6/4/93"; -static char orig_rcsid[] = "From: Id: res_mkquery.c,v 8.9 1997/04/24 22:22:36 vixie Exp $"; -#endif /* LIBC_SCCS and not lint */ -#include <sys/cdefs.h> -__FBSDID("$FreeBSD$"); - -#include <sys/types.h> -#include <sys/param.h> -#include <netinet/in.h> -#include <arpa/nameser.h> -#include <netdb.h> -#include <resolv.h> -#include <stdio.h> -#include <string.h> - -#include "res_config.h" - -/* - * Form all types of queries. - * Returns the size of the result or -1. - */ -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 */ -{ - HEADER *hp; - u_char *cp; - 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. - */ - if ((buf == NULL) || (buflen < HFIXEDSZ)) - return (-1); - memset(buf, 0, HFIXEDSZ); - hp = (HEADER *) buf; - 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) { - memcpy(cp, data, datalen); - cp += datalen; - } - hp->ancount = htons(1); - break; - - default: - return (-1); - } - return (cp - buf); -} - -/* - * Weak aliases for applications that use certain private entry points, - * and fail to include <resolv.h>. - */ -#undef res_mkquery -__weak_reference(__res_mkquery, res_mkquery); - -/* attach OPT pseudo-RR, as documented in RFC2671 (EDNS0). */ -int -res_opt(n0, buf, buflen, anslen) - int n0; - u_char *buf; /* buffer to put query */ - int buflen; /* size of buffer */ - int anslen; /* answer buffer length */ -{ - HEADER *hp; - u_char *cp; - - hp = (HEADER *) buf; - cp = buf + n0; - buflen -= n0; - - if (buflen < 1 + RRFIXEDSZ) - return -1; - - *cp++ = 0; /* "." */ - buflen--; - - __putshort(T_OPT, cp); /* TYPE */ - cp += INT16SZ; - if (anslen > 0xffff) - anslen = 0xffff; /* limit to 16bit value */ - __putshort(anslen & 0xffff, cp); /* CLASS = UDP payload size */ - cp += INT16SZ; - *cp++ = NOERROR; /* extended RCODE */ - *cp++ = 0; /* EDNS version */ - __putshort(0, cp); /* MBZ */ - cp += INT16SZ; - __putshort(0, cp); /* RDLEN */ - cp += INT16SZ; - hp->arcount = htons(ntohs(hp->arcount) + 1); - buflen -= RRFIXEDSZ; - - return cp - buf; -} |
