1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/other-licenses/android/res_mkquery.c Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,289 @@
1.4 +/* $NetBSD: res_mkquery.c,v 1.6 2006/01/24 17:40:32 christos Exp $ */
1.5 +
1.6 +/*
1.7 + * Copyright (c) 2008 Android Open Source Project (query id randomization)
1.8 + * Copyright (c) 1985, 1993
1.9 + * The Regents of the University of California. All rights reserved.
1.10 + *
1.11 + * Redistribution and use in source and binary forms, with or without
1.12 + * modification, are permitted provided that the following conditions
1.13 + * are met:
1.14 + * 1. Redistributions of source code must retain the above copyright
1.15 + * notice, this list of conditions and the following disclaimer.
1.16 + * 2. Redistributions in binary form must reproduce the above copyright
1.17 + * notice, this list of conditions and the following disclaimer in the
1.18 + * documentation and/or other materials provided with the distribution.
1.19 + * 3. All advertising materials mentioning features or use of this software
1.20 + * must display the following acknowledgement:
1.21 + * This product includes software developed by the University of
1.22 + * California, Berkeley and its contributors.
1.23 + * 4. Neither the name of the University nor the names of its contributors
1.24 + * may be used to endorse or promote products derived from this software
1.25 + * without specific prior written permission.
1.26 + *
1.27 + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
1.28 + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
1.29 + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
1.30 + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
1.31 + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
1.32 + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
1.33 + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
1.34 + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
1.35 + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
1.36 + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
1.37 + * SUCH DAMAGE.
1.38 + */
1.39 +
1.40 +/*
1.41 + * Portions Copyright (c) 1993 by Digital Equipment Corporation.
1.42 + *
1.43 + * Permission to use, copy, modify, and distribute this software for any
1.44 + * purpose with or without fee is hereby granted, provided that the above
1.45 + * copyright notice and this permission notice appear in all copies, and that
1.46 + * the name of Digital Equipment Corporation not be used in advertising or
1.47 + * publicity pertaining to distribution of the document or software without
1.48 + * specific, written prior permission.
1.49 + *
1.50 + * THE SOFTWARE IS PROVIDED "AS IS" AND DIGITAL EQUIPMENT CORP. DISCLAIMS ALL
1.51 + * WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES
1.52 + * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL DIGITAL EQUIPMENT
1.53 + * CORPORATION BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
1.54 + * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
1.55 + * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
1.56 + * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
1.57 + * SOFTWARE.
1.58 + */
1.59 +
1.60 +/*
1.61 + * Copyright (c) 2004 by Internet Systems Consortium, Inc. ("ISC")
1.62 + * Portions Copyright (c) 1996-1999 by Internet Software Consortium.
1.63 + *
1.64 + * Permission to use, copy, modify, and distribute this software for any
1.65 + * purpose with or without fee is hereby granted, provided that the above
1.66 + * copyright notice and this permission notice appear in all copies.
1.67 + *
1.68 + * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES
1.69 + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
1.70 + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR
1.71 + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
1.72 + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
1.73 + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
1.74 + * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
1.75 + */
1.76 +
1.77 +/*
1.78 + * This version of this file is derived from Android 2.3 "Gingerbread",
1.79 + * which contains uncredited changes by Android/Google developers. It has
1.80 + * been modified in 2011 for use in the Android build of Mozilla Firefox by
1.81 + * Mozilla contributors (including Michael Edwards <m.k.edwards@gmail.com>,
1.82 + * and Steve Workman <sjhworkman@gmail.com>).
1.83 + * These changes are offered under the same license as the original NetBSD
1.84 + * file, whose copyright and license are unchanged above.
1.85 + */
1.86 +
1.87 +#define ANDROID_CHANGES 1
1.88 +#define MOZILLA_NECKO_EXCLUDE_CODE 1
1.89 +
1.90 +#include <sys/cdefs.h>
1.91 +#if defined(LIBC_SCCS) && !defined(lint)
1.92 +#ifdef notdef
1.93 +static const char sccsid[] = "@(#)res_mkquery.c 8.1 (Berkeley) 6/4/93";
1.94 +static const char rcsid[] = "Id: res_mkquery.c,v 1.1.2.2.4.2 2004/03/16 12:34:18 marka Exp";
1.95 +#else
1.96 +__RCSID("$NetBSD: res_mkquery.c,v 1.6 2006/01/24 17:40:32 christos Exp $");
1.97 +#endif
1.98 +#endif /* LIBC_SCCS and not lint */
1.99 +
1.100 +
1.101 +
1.102 +#include <sys/types.h>
1.103 +#include <sys/param.h>
1.104 +#include <netinet/in.h>
1.105 +#include "arpa_nameser.h"
1.106 +#include <netdb.h>
1.107 +#ifdef ANDROID_CHANGES
1.108 +#include "resolv_private.h"
1.109 +#else
1.110 +#include <resolv.h>
1.111 +#endif
1.112 +#include <stdio.h>
1.113 +#include <string.h>
1.114 +
1.115 +/* Options. Leave them on. */
1.116 +#ifndef DEBUG
1.117 +#define DEBUG
1.118 +#endif
1.119 +
1.120 +#ifndef lint
1.121 +#define UNUSED(a) (void)&a
1.122 +#else
1.123 +#define UNUSED(a) a = a
1.124 +#endif
1.125 +
1.126 +extern const char *_res_opcodes[];
1.127 +
1.128 +/*
1.129 + * Form all types of queries.
1.130 + * Returns the size of the result or -1.
1.131 + */
1.132 +int
1.133 +res_nmkquery(res_state statp,
1.134 + int op, /* opcode of query */
1.135 + const char *dname, /* domain name */
1.136 + int class, int type, /* class and type of query */
1.137 + const u_char *data, /* resource record data */
1.138 + int datalen, /* length of data */
1.139 + const u_char *newrr_in, /* new rr for modify or append */
1.140 + u_char *buf, /* buffer to put query */
1.141 + int buflen) /* size of buffer */
1.142 +{
1.143 + register HEADER *hp;
1.144 + register u_char *cp, *ep;
1.145 + register int n;
1.146 + u_char *dnptrs[20], **dpp, **lastdnptr;
1.147 +
1.148 + UNUSED(newrr_in);
1.149 +
1.150 +#ifdef DEBUG
1.151 + if (statp->options & RES_DEBUG)
1.152 + printf(";; res_nmkquery(%s, %s, %s, %s)\n",
1.153 + _res_opcodes[op], dname, p_class(class), p_type(type));
1.154 +#endif
1.155 + /*
1.156 + * Initialize header fields.
1.157 + */
1.158 + if ((buf == NULL) || (buflen < HFIXEDSZ))
1.159 + return (-1);
1.160 + memset(buf, 0, HFIXEDSZ);
1.161 + hp = (HEADER *)(void *)buf;
1.162 + hp->id = htons(res_randomid());
1.163 + hp->opcode = op;
1.164 + hp->rd = (statp->options & RES_RECURSE) != 0U;
1.165 + hp->rcode = NOERROR;
1.166 + cp = buf + HFIXEDSZ;
1.167 + ep = buf + buflen;
1.168 + dpp = dnptrs;
1.169 + *dpp++ = buf;
1.170 + *dpp++ = NULL;
1.171 + lastdnptr = dnptrs + sizeof dnptrs / sizeof dnptrs[0];
1.172 + /*
1.173 + * perform opcode specific processing
1.174 + */
1.175 + switch (op) {
1.176 + case QUERY: /*FALLTHROUGH*/
1.177 + case NS_NOTIFY_OP:
1.178 + if (ep - cp < QFIXEDSZ)
1.179 + return (-1);
1.180 + if ((n = dn_comp(dname, cp, ep - cp - QFIXEDSZ, dnptrs,
1.181 + lastdnptr)) < 0)
1.182 + return (-1);
1.183 + cp += n;
1.184 + ns_put16(type, cp);
1.185 + cp += INT16SZ;
1.186 + ns_put16(class, cp);
1.187 + cp += INT16SZ;
1.188 + hp->qdcount = htons(1);
1.189 + if (op == QUERY || data == NULL)
1.190 + break;
1.191 + /*
1.192 + * Make an additional record for completion domain.
1.193 + */
1.194 + if ((ep - cp) < RRFIXEDSZ)
1.195 + return (-1);
1.196 + n = dn_comp((const char *)data, cp, ep - cp - RRFIXEDSZ,
1.197 + dnptrs, lastdnptr);
1.198 + if (n < 0)
1.199 + return (-1);
1.200 + cp += n;
1.201 + ns_put16(T_NULL, cp);
1.202 + cp += INT16SZ;
1.203 + ns_put16(class, cp);
1.204 + cp += INT16SZ;
1.205 + ns_put32(0, cp);
1.206 + cp += INT32SZ;
1.207 + ns_put16(0, cp);
1.208 + cp += INT16SZ;
1.209 + hp->arcount = htons(1);
1.210 + break;
1.211 +
1.212 + case IQUERY:
1.213 + /*
1.214 + * Initialize answer section
1.215 + */
1.216 + if (ep - cp < 1 + RRFIXEDSZ + datalen)
1.217 + return (-1);
1.218 + *cp++ = '\0'; /* no domain name */
1.219 + ns_put16(type, cp);
1.220 + cp += INT16SZ;
1.221 + ns_put16(class, cp);
1.222 + cp += INT16SZ;
1.223 + ns_put32(0, cp);
1.224 + cp += INT32SZ;
1.225 + ns_put16(datalen, cp);
1.226 + cp += INT16SZ;
1.227 + if (datalen) {
1.228 + memcpy(cp, data, (size_t)datalen);
1.229 + cp += datalen;
1.230 + }
1.231 + hp->ancount = htons(1);
1.232 + break;
1.233 +
1.234 + default:
1.235 + return (-1);
1.236 + }
1.237 + return (cp - buf);
1.238 +}
1.239 +
1.240 +#ifdef RES_USE_EDNS0
1.241 +/* attach OPT pseudo-RR, as documented in RFC2671 (EDNS0). */
1.242 +#ifndef T_OPT
1.243 +#define T_OPT 41
1.244 +#endif
1.245 +
1.246 +int
1.247 +res_nopt(res_state statp,
1.248 + int n0, /* current offset in buffer */
1.249 + u_char *buf, /* buffer to put query */
1.250 + int buflen, /* size of buffer */
1.251 + int anslen) /* UDP answer buffer size */
1.252 +{
1.253 + register HEADER *hp;
1.254 + register u_char *cp, *ep;
1.255 + u_int16_t flags = 0;
1.256 +
1.257 +#ifdef DEBUG
1.258 + if ((statp->options & RES_DEBUG) != 0U)
1.259 + printf(";; res_nopt()\n");
1.260 +#endif
1.261 +
1.262 + hp = (HEADER *)(void *)buf;
1.263 + cp = buf + n0;
1.264 + ep = buf + buflen;
1.265 +
1.266 + if ((ep - cp) < 1 + RRFIXEDSZ)
1.267 + return (-1);
1.268 +
1.269 + *cp++ = 0; /* "." */
1.270 +
1.271 + ns_put16(T_OPT, cp); /* TYPE */
1.272 + cp += INT16SZ;
1.273 + ns_put16(anslen & 0xffff, cp); /* CLASS = UDP payload size */
1.274 + cp += INT16SZ;
1.275 + *cp++ = NOERROR; /* extended RCODE */
1.276 + *cp++ = 0; /* EDNS version */
1.277 + if (statp->options & RES_USE_DNSSEC) {
1.278 +#ifdef DEBUG
1.279 + if (statp->options & RES_DEBUG)
1.280 + printf(";; res_opt()... ENDS0 DNSSEC\n");
1.281 +#endif
1.282 + flags |= NS_OPT_DNSSEC_OK;
1.283 + }
1.284 + ns_put16(flags, cp);
1.285 + cp += INT16SZ;
1.286 + ns_put16(0, cp); /* RDLEN */
1.287 + cp += INT16SZ;
1.288 + hp->arcount = htons(ntohs(hp->arcount) + 1);
1.289 +
1.290 + return (cp - buf);
1.291 +}
1.292 +#endif
