11dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project/* $NetBSD: gethnamaddr.c,v 1.70 2006/03/22 00:03:51 christos Exp $ */ 21dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project 31dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project/* 41dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * ++Copyright++ 1985, 1988, 1993 51dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * - 61dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * Copyright (c) 1985, 1988, 1993 71dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * The Regents of the University of California. All rights reserved. 81dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * 91dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * Redistribution and use in source and binary forms, with or without 101dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * modification, are permitted provided that the following conditions 111dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * are met: 121dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * 1. Redistributions of source code must retain the above copyright 131dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * notice, this list of conditions and the following disclaimer. 141dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * 2. Redistributions in binary form must reproduce the above copyright 151dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * notice, this list of conditions and the following disclaimer in the 161dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * documentation and/or other materials provided with the distribution. 171dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * 3. Neither the name of the University nor the names of its contributors 181dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * may be used to endorse or promote products derived from this software 191dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * without specific prior written permission. 201dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * 211dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 221dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 231dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 241dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 251dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 261dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 271dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 281dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 291dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 301dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 311dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * SUCH DAMAGE. 321dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * - 331dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * Portions Copyright (c) 1993 by Digital Equipment Corporation. 341dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * 351dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * Permission to use, copy, modify, and distribute this software for any 361dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * purpose with or without fee is hereby granted, provided that the above 371dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * copyright notice and this permission notice appear in all copies, and that 381dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * the name of Digital Equipment Corporation not be used in advertising or 391dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * publicity pertaining to distribution of the document or software without 401dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * specific, written prior permission. 411dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * 421dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * THE SOFTWARE IS PROVIDED "AS IS" AND DIGITAL EQUIPMENT CORP. DISCLAIMS ALL 431dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES 441dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL DIGITAL EQUIPMENT 451dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * CORPORATION BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL 461dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR 471dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS 481dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS 491dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * SOFTWARE. 501dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * - 511dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * --Copyright-- 521dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project */ 531dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project 541dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project#include <sys/cdefs.h> 551dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project#include <sys/types.h> 561dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project 571dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project#include <sys/param.h> 581dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project#include <sys/socket.h> 59c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falk#include <sys/un.h> 601dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project#include <netinet/in.h> 611dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project#include <arpa/inet.h> 62569fb9887d00104509df79fa77d92e3cf9afe7dbCalin Juravle#include <arpa/nameser.h> 635240b562e7e9de2f31ba70f71c394c5529aadf0fPaul Jensen#include "NetdClientDispatch.h" 64ea9bf6788144b83cc51c454b2bfe6b980d6e947cSzymon Jakubczak#include "resolv_netid.h" 651dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project#include "resolv_private.h" 661dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project#include "resolv_cache.h" 671dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project#include <assert.h> 681dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project#include <ctype.h> 691dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project#include <errno.h> 701dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project#include <netdb.h> 711dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project#include <stdarg.h> 721dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project#include <stdio.h> 732cc2b2be692f1d559a09d2066e56e450249cc9c0Carl Shapiro#include <strings.h> 741dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project#include <syslog.h> 75c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falk#include <unistd.h> 761dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project 77c20de902875dcaebde0ccd0b7a8351598f254d4cCalin Juravle#define ALIGNBYTES (sizeof(uintptr_t) - 1) 78c20de902875dcaebde0ccd0b7a8351598f254d4cCalin Juravle#define ALIGN(p) (((uintptr_t)(p) + ALIGNBYTES) &~ ALIGNBYTES) 79c20de902875dcaebde0ccd0b7a8351598f254d4cCalin Juravle 801dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project#ifndef LOG_AUTH 811dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project# define LOG_AUTH 0 821dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project#endif 831dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project 841dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project#define MULTI_PTRS_ARE_ALIASES 1 /* XXX - experimental */ 851dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project 861dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project#include "nsswitch.h" 871dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project#include <stdlib.h> 881dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project#include <string.h> 891dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project 90c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falk// This should be synchronized to ResponseCode.h 91c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falkstatic const int DnsProxyQueryResult = 222; 92c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falk 9368c2755d71750401d82d9aa17774ebd385cb5dc0Elliott Hughesstatic const char AskedForGot[] = 941dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project "gethostby*.getanswer: asked for \"%s\", got \"%s\""; 951dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project 961dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project#define MAXPACKET (64*1024) 971dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project 981dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Projecttypedef union { 991dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project HEADER hdr; 1001dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project u_char buf[MAXPACKET]; 1011dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project} querybuf; 1021dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project 1031dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Projecttypedef union { 1041dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project int32_t al; 1051dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project char ac; 1061dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project} align; 1071dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project 1081dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project#ifdef DEBUG 1091dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Projectstatic void dprintf(const char *, res_state, ...) 1101dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project __attribute__((__format__(__printf__, 1, 3))); 1111dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project#endif 1121dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Projectstatic struct hostent *getanswer(const querybuf *, int, const char *, int, 1131dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project res_state); 1141dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Projectstatic void map_v4v6_address(const char *, char *); 1151dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Projectstatic void map_v4v6_hostent(struct hostent *, char **, char *); 1161dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Projectstatic void addrsort(char **, int, res_state); 1171dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project 118e5c35e075fad5b5c143971c4401a360f6eaf5470Jim Huangstatic void _sethtent(int); 119e5c35e075fad5b5c143971c4401a360f6eaf5470Jim Huangstatic void _endhtent(void); 120e5c35e075fad5b5c143971c4401a360f6eaf5470Jim Huangstatic struct hostent *_gethtent(void); 1211dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Projectvoid ht_sethostent(int); 1221dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Projectvoid ht_endhostent(void); 1231dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Projectstruct hostent *ht_gethostbyname(char *); 1241dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Projectstruct hostent *ht_gethostbyaddr(const char *, int, int); 1251dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Projectvoid dns_service(void); 1261dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project#undef dn_skipname 1271dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Projectint dn_skipname(const u_char *, const u_char *); 128e5c35e075fad5b5c143971c4401a360f6eaf5470Jim Huangstatic int _gethtbyaddr(void *, void *, va_list); 129e5c35e075fad5b5c143971c4401a360f6eaf5470Jim Huangstatic int _gethtbyname(void *, void *, va_list); 130e5c35e075fad5b5c143971c4401a360f6eaf5470Jim Huangstatic struct hostent *_gethtbyname2(const char *, int); 131e5c35e075fad5b5c143971c4401a360f6eaf5470Jim Huangstatic int _dns_gethtbyaddr(void *, void *, va_list); 132e5c35e075fad5b5c143971c4401a360f6eaf5470Jim Huangstatic int _dns_gethtbyname(void *, void *, va_list); 1331dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project 134ea9bf6788144b83cc51c454b2bfe6b980d6e947cSzymon Jakubczakstatic struct hostent *gethostbyname_internal(const char *, int, res_state, unsigned, unsigned); 1351dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project 1361dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Projectstatic const ns_src default_dns_files[] = { 1371dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project { NSSRC_FILES, NS_SUCCESS }, 1381dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project { NSSRC_DNS, NS_SUCCESS }, 1391dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project { 0, 0 } 1401dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project}; 1411dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project 1421dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project 1431dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project#ifdef DEBUG 1441dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Projectstatic void 1451dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Projectdprintf(const char *msg, res_state res, ...) 1461dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project{ 1471dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project assert(msg != NULL); 1481dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project 1491dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project if (res->options & RES_DEBUG) { 1501dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project int save = errno; 1511dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project va_list ap; 1521dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project 1531dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project va_start (ap, res); 1541dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project vprintf(msg, ap); 1551dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project va_end (ap); 1561dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project 1571dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project errno = save; 1581dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project } 1591dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project} 1601dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project#else 1611dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project# define dprintf(msg, res, num) ((void)0) /*nada*/ 1621dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project#endif 1631dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project 1641dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project#define BOUNDED_INCR(x) \ 1651dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project do { \ 1661dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project cp += (x); \ 1671dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project if (cp > eom) { \ 1681dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project h_errno = NO_RECOVERY; \ 1691dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project return NULL; \ 1701dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project } \ 1711dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project } while (/*CONSTCOND*/0) 1721dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project 1731dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project#define BOUNDS_CHECK(ptr, count) \ 1741dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project do { \ 1751dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project if ((ptr) + (count) > eom) { \ 1761dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project h_errno = NO_RECOVERY; \ 1771dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project return NULL; \ 1781dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project } \ 1791dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project } while (/*CONSTCOND*/0) 1801dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project 1811dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Projectstatic struct hostent * 1821dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Projectgetanswer(const querybuf *answer, int anslen, const char *qname, int qtype, 1831dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project res_state res) 1841dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project{ 1851dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project const HEADER *hp; 1861dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project const u_char *cp; 1871dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project int n; 1881dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project const u_char *eom, *erdata; 1891dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project char *bp, **ap, **hap, *ep; 1901dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project int type, class, ancount, qdcount; 1911dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project int haveanswer, had_error; 1921dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project int toobig = 0; 1931dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project char tbuf[MAXDNAME]; 1941dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project const char *tname; 1951dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project int (*name_ok)(const char *); 1961dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project res_static rs = __res_get_static(); 1971dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project 1981dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project assert(answer != NULL); 1991dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project assert(qname != NULL); 2001dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project 2011dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project tname = qname; 2021dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project rs->host.h_name = NULL; 2031dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project eom = answer->buf + anslen; 2041dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project switch (qtype) { 2051dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project case T_A: 2061dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project case T_AAAA: 2071dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project name_ok = res_hnok; 2081dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project break; 2091dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project case T_PTR: 2101dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project name_ok = res_dnok; 2111dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project break; 2121dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project default: 2131dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project return NULL; /* XXX should be abort(); */ 2141dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project } 2151dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project /* 2161dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * find first satisfactory answer 2171dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project */ 2181dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project hp = &answer->hdr; 2191dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project ancount = ntohs(hp->ancount); 2201dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project qdcount = ntohs(hp->qdcount); 2211dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project bp = rs->hostbuf; 2221dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project ep = rs->hostbuf + sizeof rs->hostbuf; 2231dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project cp = answer->buf; 2241dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project BOUNDED_INCR(HFIXEDSZ); 2251dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project if (qdcount != 1) { 2261dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project h_errno = NO_RECOVERY; 2271dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project return NULL; 2281dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project } 2291dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project n = dn_expand(answer->buf, eom, cp, bp, ep - bp); 2301dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project if ((n < 0) || !(*name_ok)(bp)) { 2311dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project h_errno = NO_RECOVERY; 2321dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project return NULL; 2331dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project } 2341dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project BOUNDED_INCR(n + QFIXEDSZ); 2351dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project if (qtype == T_A || qtype == T_AAAA) { 2361dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project /* res_send() has already verified that the query name is the 2371dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * same as the one we sent; this just gets the expanded name 2381dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * (i.e., with the succeeding search-domain tacked on). 2391dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project */ 2401dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project n = strlen(bp) + 1; /* for the \0 */ 2411dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project if (n >= MAXHOSTNAMELEN) { 2421dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project h_errno = NO_RECOVERY; 2431dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project return NULL; 2441dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project } 2451dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project rs->host.h_name = bp; 2461dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project bp += n; 2471dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project /* The qname can be abbreviated, but h_name is now absolute. */ 2481dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project qname = rs->host.h_name; 2491dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project } 2501dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project ap = rs->host_aliases; 2511dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project *ap = NULL; 2521dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project rs->host.h_aliases = rs->host_aliases; 2531dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project hap = rs->h_addr_ptrs; 2541dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project *hap = NULL; 2551dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project rs->host.h_addr_list = rs->h_addr_ptrs; 2561dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project haveanswer = 0; 2571dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project had_error = 0; 2581dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project while (ancount-- > 0 && cp < eom && !had_error) { 2591dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project n = dn_expand(answer->buf, eom, cp, bp, ep - bp); 2601dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project if ((n < 0) || !(*name_ok)(bp)) { 2611dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project had_error++; 2621dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project continue; 2631dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project } 2641dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project cp += n; /* name */ 2651dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project BOUNDS_CHECK(cp, 3 * INT16SZ + INT32SZ); 2661dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project type = _getshort(cp); 2671dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project cp += INT16SZ; /* type */ 2681dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project class = _getshort(cp); 2691dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project cp += INT16SZ + INT32SZ; /* class, TTL */ 2701dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project n = _getshort(cp); 2711dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project cp += INT16SZ; /* len */ 2721dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project BOUNDS_CHECK(cp, n); 2731dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project erdata = cp + n; 2741dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project if (class != C_IN) { 2751dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project /* XXX - debug? syslog? */ 2761dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project cp += n; 2771dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project continue; /* XXX - had_error++ ? */ 2781dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project } 2791dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project if ((qtype == T_A || qtype == T_AAAA) && type == T_CNAME) { 2801dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project if (ap >= &rs->host_aliases[MAXALIASES-1]) 2811dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project continue; 2821dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project n = dn_expand(answer->buf, eom, cp, tbuf, sizeof tbuf); 2831dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project if ((n < 0) || !(*name_ok)(tbuf)) { 2841dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project had_error++; 2851dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project continue; 2861dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project } 2871dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project cp += n; 2881dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project if (cp != erdata) { 2891dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project h_errno = NO_RECOVERY; 2901dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project return NULL; 2911dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project } 2921dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project /* Store alias. */ 2931dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project *ap++ = bp; 2941dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project n = strlen(bp) + 1; /* for the \0 */ 2951dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project if (n >= MAXHOSTNAMELEN) { 2961dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project had_error++; 2971dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project continue; 2981dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project } 2991dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project bp += n; 3001dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project /* Get canonical name. */ 3011dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project n = strlen(tbuf) + 1; /* for the \0 */ 3021dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project if (n > ep - bp || n >= MAXHOSTNAMELEN) { 3031dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project had_error++; 3041dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project continue; 3051dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project } 3061dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project strlcpy(bp, tbuf, (size_t)(ep - bp)); 3071dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project rs->host.h_name = bp; 3081dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project bp += n; 3091dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project continue; 3101dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project } 3111dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project if (qtype == T_PTR && type == T_CNAME) { 3121dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project n = dn_expand(answer->buf, eom, cp, tbuf, sizeof tbuf); 3131dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project if (n < 0 || !res_dnok(tbuf)) { 3141dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project had_error++; 3151dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project continue; 3161dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project } 3171dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project cp += n; 3181dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project if (cp != erdata) { 3191dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project h_errno = NO_RECOVERY; 3201dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project return NULL; 3211dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project } 3221dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project /* Get canonical name. */ 3231dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project n = strlen(tbuf) + 1; /* for the \0 */ 3241dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project if (n > ep - bp || n >= MAXHOSTNAMELEN) { 3251dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project had_error++; 3261dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project continue; 3271dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project } 3281dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project strlcpy(bp, tbuf, (size_t)(ep - bp)); 3291dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project tname = bp; 3301dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project bp += n; 3311dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project continue; 3321dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project } 3331dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project if (type != qtype) { 3341dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project if (type != T_KEY && type != T_SIG) 3351dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project syslog(LOG_NOTICE|LOG_AUTH, 3361dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project "gethostby*.getanswer: asked for \"%s %s %s\", got type \"%s\"", 3371dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project qname, p_class(C_IN), p_type(qtype), 3381dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project p_type(type)); 3391dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project cp += n; 3401dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project continue; /* XXX - had_error++ ? */ 3411dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project } 3421dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project switch (type) { 3431dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project case T_PTR: 3441dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project if (strcasecmp(tname, bp) != 0) { 3451dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project syslog(LOG_NOTICE|LOG_AUTH, 3461dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project AskedForGot, qname, bp); 3471dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project cp += n; 3481dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project continue; /* XXX - had_error++ ? */ 3491dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project } 3501dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project n = dn_expand(answer->buf, eom, cp, bp, ep - bp); 3511dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project if ((n < 0) || !res_hnok(bp)) { 3521dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project had_error++; 3531dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project break; 3541dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project } 3551dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project#if MULTI_PTRS_ARE_ALIASES 3561dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project cp += n; 3571dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project if (cp != erdata) { 3581dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project h_errno = NO_RECOVERY; 3591dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project return NULL; 3601dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project } 3611dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project if (!haveanswer) 3621dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project rs->host.h_name = bp; 3631dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project else if (ap < &rs->host_aliases[MAXALIASES-1]) 3641dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project *ap++ = bp; 3651dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project else 3661dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project n = -1; 3671dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project if (n != -1) { 3681dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project n = strlen(bp) + 1; /* for the \0 */ 3691dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project if (n >= MAXHOSTNAMELEN) { 3701dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project had_error++; 3711dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project break; 3721dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project } 3731dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project bp += n; 3741dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project } 3751dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project break; 3761dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project#else 3771dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project rs->host.h_name = bp; 3781dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project if (res->options & RES_USE_INET6) { 3791dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project n = strlen(bp) + 1; /* for the \0 */ 3801dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project if (n >= MAXHOSTNAMELEN) { 3811dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project had_error++; 3821dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project break; 3831dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project } 3841dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project bp += n; 3851dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project map_v4v6_hostent(&rs->host, &bp, ep); 3861dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project } 3871dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project h_errno = NETDB_SUCCESS; 3881dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project return &rs->host; 3891dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project#endif 3901dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project case T_A: 3911dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project case T_AAAA: 3921dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project if (strcasecmp(rs->host.h_name, bp) != 0) { 3931dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project syslog(LOG_NOTICE|LOG_AUTH, 3941dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project AskedForGot, rs->host.h_name, bp); 3951dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project cp += n; 3961dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project continue; /* XXX - had_error++ ? */ 3971dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project } 3981dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project if (n != rs->host.h_length) { 3991dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project cp += n; 4001dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project continue; 4011dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project } 4021dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project if (type == T_AAAA) { 4031dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project struct in6_addr in6; 4041dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project memcpy(&in6, cp, IN6ADDRSZ); 4051dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project if (IN6_IS_ADDR_V4MAPPED(&in6)) { 4061dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project cp += n; 4071dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project continue; 4081dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project } 4091dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project } 4101dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project if (!haveanswer) { 4111dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project int nn; 4121dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project 4131dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project rs->host.h_name = bp; 4141dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project nn = strlen(bp) + 1; /* for the \0 */ 4151dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project bp += nn; 4161dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project } 4171dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project 4181dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project bp += sizeof(align) - 4191dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project (size_t)((u_long)bp % sizeof(align)); 4201dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project 4211dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project if (bp + n >= &rs->hostbuf[sizeof rs->hostbuf]) { 4221dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project dprintf("size (%d) too big\n", res, n); 4231dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project had_error++; 4241dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project continue; 4251dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project } 4261dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project if (hap >= &rs->h_addr_ptrs[MAXADDRS-1]) { 4271dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project if (!toobig++) 4281dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project dprintf("Too many addresses (%d)\n", 4291dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project res, MAXADDRS); 4301dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project cp += n; 4311dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project continue; 4321dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project } 4331dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project (void)memcpy(*hap++ = bp, cp, (size_t)n); 4341dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project bp += n; 4351dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project cp += n; 4361dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project if (cp != erdata) { 4371dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project h_errno = NO_RECOVERY; 4381dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project return NULL; 4391dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project } 4401dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project break; 4411dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project default: 4421dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project abort(); 4431dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project } 4441dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project if (!had_error) 4451dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project haveanswer++; 4461dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project } 4471dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project if (haveanswer) { 4481dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project *ap = NULL; 4491dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project *hap = NULL; 4501dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project /* 4511dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * Note: we sort even if host can take only one address 4521dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * in its return structures - should give it the "best" 4531dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * address in that case, not some random one 4541dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project */ 4551dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project if (res->nsort && haveanswer > 1 && qtype == T_A) 4561dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project addrsort(rs->h_addr_ptrs, haveanswer, res); 4571dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project if (!rs->host.h_name) { 4581dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project n = strlen(qname) + 1; /* for the \0 */ 4591dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project if (n > ep - bp || n >= MAXHOSTNAMELEN) 4601dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project goto no_recovery; 4611dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project strlcpy(bp, qname, (size_t)(ep - bp)); 4621dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project rs->host.h_name = bp; 4631dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project bp += n; 4641dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project } 4651dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project if (res->options & RES_USE_INET6) 4661dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project map_v4v6_hostent(&rs->host, &bp, ep); 4671dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project h_errno = NETDB_SUCCESS; 4681dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project return &rs->host; 4691dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project } 4701dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project no_recovery: 4711dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project h_errno = NO_RECOVERY; 4721dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project return NULL; 4731dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project} 4741dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project 4751dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Projectint 4761dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Projectgethostbyname_r(const char *name, struct hostent *hp, char *buf, size_t buflen, 4771dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project struct hostent**result, int *errorp) 4781dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project{ 4791dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project struct hostent *res; 4801dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project 4811dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project res = gethostbyname(name); 4821dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project *errorp = h_errno; 4831dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project if (res == NULL) { 4841dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project *result = NULL; 4851dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project return -1; 4861dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project } 4871dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project memcpy(hp, res, sizeof *hp); 4881dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project *result = hp; 4891dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project return 0; 4901dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project} 4911dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project 4921dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Projectstruct hostent * 4931dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Projectgethostbyname(const char *name) 4941dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project{ 4951dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project struct hostent *hp; 4961dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project res_state res = __res_get_state(); 4971dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project 4981dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project if (res == NULL) 4991dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project return NULL; 5001dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project 5011dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project assert(name != NULL); 5021dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project 503c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falk /* try IPv6 first - if that fails do IPv4 */ 5041dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project if (res->options & RES_USE_INET6) { 505ea9bf6788144b83cc51c454b2bfe6b980d6e947cSzymon Jakubczak hp = gethostbyname_internal(name, AF_INET6, res, NETID_UNSET, MARK_UNSET); 5061dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project if (hp) { 5071dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project __res_put_state(res); 5081dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project return hp; 5091dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project } 5101dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project } 511ea9bf6788144b83cc51c454b2bfe6b980d6e947cSzymon Jakubczak hp = gethostbyname_internal(name, AF_INET, res, NETID_UNSET, MARK_UNSET); 5121dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project __res_put_state(res); 5131dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project return hp; 5141dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project} 5151dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project 5161dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Projectstruct hostent * 5171dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Projectgethostbyname2(const char *name, int af) 5181dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project{ 519ea9bf6788144b83cc51c454b2bfe6b980d6e947cSzymon Jakubczak return android_gethostbynamefornet(name, af, NETID_UNSET, MARK_UNSET); 520c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falk} 521c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falk 522c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falkstruct hostent * 523ea9bf6788144b83cc51c454b2bfe6b980d6e947cSzymon Jakubczakandroid_gethostbynamefornet(const char *name, int af, unsigned netid, unsigned mark) 524c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falk{ 5251dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project struct hostent *hp; 5261dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project res_state res = __res_get_state(); 5271dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project 5281dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project if (res == NULL) 5291dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project return NULL; 530ea9bf6788144b83cc51c454b2bfe6b980d6e947cSzymon Jakubczak hp = gethostbyname_internal(name, af, res, netid, mark); 5311dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project __res_put_state(res); 5321dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project return hp; 5331dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project} 5341dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project 535c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falk 536c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falkstatic FILE* android_open_proxy() 537c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falk{ 538c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falk int sock; 539c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falk const int one = 1; 540c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falk struct sockaddr_un proxy_addr; 541c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falk 5421781ed7774671d5a750839650b9582ff0abbcf42Nick Kralevich sock = socket(AF_UNIX, SOCK_STREAM | SOCK_CLOEXEC, 0); 543c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falk if (sock < 0) { 544c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falk return NULL; 545c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falk } 546c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falk 547c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falk setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, &one, sizeof(one)); 548c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falk memset(&proxy_addr, 0, sizeof(proxy_addr)); 549c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falk proxy_addr.sun_family = AF_UNIX; 550c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falk strlcpy(proxy_addr.sun_path, "/dev/socket/dnsproxyd", sizeof(proxy_addr.sun_path)); 551c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falk if (TEMP_FAILURE_RETRY(connect(sock, 552c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falk (const struct sockaddr*) &proxy_addr, 553c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falk sizeof(proxy_addr))) != 0) { 554c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falk close(sock); 555c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falk return NULL; 556c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falk } 557c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falk 558c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falk return fdopen(sock, "r+"); 559c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falk} 560c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falk 561c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falkstatic struct hostent * 562c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falkandroid_read_hostent(FILE* proxy) 563c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falk{ 564c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falk uint32_t size; 565c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falk char buf[4]; 566c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falk if (fread(buf, 1, sizeof(buf), proxy) != sizeof(buf)) return NULL; 567c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falk 5682582f02a01cd56c56a4e6c9de4444a6ec937cc37Sreeram Ramachandran /* This is reading serialized data from system/netd/server/DnsProxyListener.cpp 569c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falk * and changes here need to be matched there */ 570c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falk int result_code = strtol(buf, NULL, 10); 571c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falk if (result_code != DnsProxyQueryResult) { 572c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falk fread(&size, 1, sizeof(size), proxy); 573c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falk return NULL; 574c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falk } 575c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falk 576c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falk if (fread(&size, 1, sizeof(size), proxy) != sizeof(size)) return NULL; 577c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falk size = ntohl(size); 578c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falk res_static rs = __res_get_static(); 579c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falk memset(&rs->host, 0, sizeof(rs->host)); 580c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falk char *ptr = rs->hostbuf; 581c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falk 582c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falk if (fread(ptr, 1, size, proxy) != size) return NULL; 583c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falk ptr += size; 584c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falk rs->host.h_name = rs->hostbuf; 585c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falk 586c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falk char **aliases = rs->host_aliases; 587c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falk rs->host.h_aliases = rs->host_aliases; 588c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falk while (1) { 589c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falk if (fread(&size, 1, sizeof(size), proxy) != sizeof(size)) return NULL; 590c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falk size = ntohl(size); 591c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falk 592c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falk if (size == 0) { 593c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falk *aliases = NULL; 594c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falk break; 595c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falk } 596c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falk if (fread(ptr, 1, size, proxy) != size) return NULL; 597c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falk *aliases++ = ptr; 598c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falk ptr += size; 599c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falk } 600c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falk 601c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falk if (fread(&size, 1, sizeof(size), proxy) != sizeof(size)) return NULL; 602c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falk rs->host.h_addrtype = ntohl(size); 603c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falk 604c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falk if (fread(&size, 1, sizeof(size), proxy) != sizeof(size)) return NULL; 605c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falk rs->host.h_length = ntohl(size); 606c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falk 607c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falk char **addrs = rs->h_addr_ptrs; 608c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falk rs->host.h_addr_list = rs->h_addr_ptrs; 609c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falk while (1) { 610c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falk if (fread(&size, 1, sizeof(size), proxy) != sizeof(size)) return NULL; 611c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falk size = ntohl(size); 612c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falk if (size == 0) { 613c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falk *addrs = NULL; 614c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falk break; 615c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falk } 616c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falk if (fread(ptr, 1, size, proxy) != size) return NULL; 617c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falk *addrs++ = ptr; 618c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falk ptr += size; 619c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falk } 620c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falk 621c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falk return &rs->host; 622c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falk} 623c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falk 624c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falk 6251dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Projectstatic struct hostent * 626c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falkgethostbyname_internal_real(const char *name, int af, res_state res) 6271dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project{ 6281dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project const char *cp; 6291dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project char *bp, *ep; 6301dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project int size; 6311dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project struct hostent *hp; 632c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falk res_static rs = __res_get_static(); 6331dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project 6341dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project static const ns_dtab dtab[] = { 6351dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project NS_FILES_CB(_gethtbyname, NULL) 6361dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project { NSSRC_DNS, _dns_gethtbyname, NULL }, /* force -DHESIOD */ 6371dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project { 0, 0, 0 } 6381dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project }; 6391dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project 6401dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project assert(name != NULL); 6411dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project 6421dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project switch (af) { 6431dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project case AF_INET: 6441dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project size = INADDRSZ; 6451dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project break; 6461dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project case AF_INET6: 6471dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project size = IN6ADDRSZ; 6481dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project break; 6491dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project default: 6501dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project h_errno = NETDB_INTERNAL; 6511dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project errno = EAFNOSUPPORT; 6521dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project return NULL; 6531dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project } 6541dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project 6551dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project rs->host.h_addrtype = af; 6561dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project rs->host.h_length = size; 6571dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project 6581dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project /* 6591dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * if there aren't any dots, it could be a user-level alias. 6601dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * this is also done in res_nquery() since we are not the only 6611dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * function that looks up host names. 6621dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project */ 6631dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project if (!strchr(name, '.') && (cp = __hostalias(name))) 6641dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project name = cp; 6651dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project 6661dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project /* 6671dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * disallow names consisting only of digits/dots, unless 6681dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * they end in a dot. 6691dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project */ 6701dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project if (isdigit((u_char) name[0])) 6711dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project for (cp = name;; ++cp) { 6721dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project if (!*cp) { 6731dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project if (*--cp == '.') 6741dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project break; 6751dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project /* 6761dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * All-numeric, no dot at the end. 6771dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * Fake up a hostent as if we'd actually 6781dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * done a lookup. 6791dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project */ 6801dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project if (inet_pton(af, name, 6811dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project (char *)(void *)rs->host_addr) <= 0) { 6821dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project h_errno = HOST_NOT_FOUND; 6831dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project return NULL; 6841dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project } 6851dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project strncpy(rs->hostbuf, name, MAXDNAME); 6861dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project rs->hostbuf[MAXDNAME] = '\0'; 6871dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project bp = rs->hostbuf + MAXDNAME; 6881dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project ep = rs->hostbuf + sizeof rs->hostbuf; 6891dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project rs->host.h_name = rs->hostbuf; 6901dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project rs->host.h_aliases = rs->host_aliases; 6911dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project rs->host_aliases[0] = NULL; 6921dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project rs->h_addr_ptrs[0] = (char *)(void *)rs->host_addr; 6931dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project rs->h_addr_ptrs[1] = NULL; 6941dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project rs->host.h_addr_list = rs->h_addr_ptrs; 6951dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project if (res->options & RES_USE_INET6) 6961dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project map_v4v6_hostent(&rs->host, &bp, ep); 6971dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project h_errno = NETDB_SUCCESS; 6981dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project return &rs->host; 6991dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project } 7001dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project if (!isdigit((u_char) *cp) && *cp != '.') 7011dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project break; 7021dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project } 7031dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project if ((isxdigit((u_char) name[0]) && strchr(name, ':') != NULL) || 7041dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project name[0] == ':') 7051dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project for (cp = name;; ++cp) { 7061dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project if (!*cp) { 7071dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project if (*--cp == '.') 7081dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project break; 7091dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project /* 7101dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * All-IPv6-legal, no dot at the end. 7111dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * Fake up a hostent as if we'd actually 7121dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * done a lookup. 7131dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project */ 7141dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project if (inet_pton(af, name, 7151dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project (char *)(void *)rs->host_addr) <= 0) { 7161dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project h_errno = HOST_NOT_FOUND; 7171dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project return NULL; 7181dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project } 7191dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project strncpy(rs->hostbuf, name, MAXDNAME); 7201dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project rs->hostbuf[MAXDNAME] = '\0'; 7211dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project bp = rs->hostbuf + MAXDNAME; 7221dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project ep = rs->hostbuf + sizeof rs->hostbuf; 7231dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project rs->host.h_name = rs->hostbuf; 7241dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project rs->host.h_aliases = rs->host_aliases; 7251dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project rs->host_aliases[0] = NULL; 7261dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project rs->h_addr_ptrs[0] = (char *)(void *)rs->host_addr; 7271dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project rs->h_addr_ptrs[1] = NULL; 7281dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project rs->host.h_addr_list = rs->h_addr_ptrs; 7291dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project h_errno = NETDB_SUCCESS; 7301dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project return &rs->host; 7311dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project } 7321dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project if (!isxdigit((u_char) *cp) && *cp != ':' && *cp != '.') 7331dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project break; 7341dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project } 7351dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project 7361dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project hp = NULL; 7371dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project h_errno = NETDB_INTERNAL; 7381dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project if (nsdispatch(&hp, dtab, NSDB_HOSTS, "gethostbyname", 7391dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project default_dns_files, name, strlen(name), af) != NS_SUCCESS) { 7401dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project return NULL; 741c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falk } 7421dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project h_errno = NETDB_SUCCESS; 7431dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project return hp; 7441dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project} 7451dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project 746c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falk 747c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falk// very similar in proxy-ness to android_getaddrinfo_proxy 748c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falkstatic struct hostent * 749ea9bf6788144b83cc51c454b2bfe6b980d6e947cSzymon Jakubczakgethostbyname_internal(const char *name, int af, res_state res, unsigned netid, unsigned mark) 750c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falk{ 751c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falk const char *cache_mode = getenv("ANDROID_DNS_MODE"); 752c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falk FILE* proxy = NULL; 753c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falk struct hostent *result = NULL; 754c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falk 755c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falk if (cache_mode != NULL && strcmp(cache_mode, "local") == 0) { 756ea9bf6788144b83cc51c454b2bfe6b980d6e947cSzymon Jakubczak res_setnetid(res, netid); 757c39214e0ac49b9f7de6fd9989331145c6e1cd584Chad Brubaker res_setmark(res, mark); 758c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falk return gethostbyname_internal_real(name, af, res); 759c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falk } 760c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falk 761c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falk proxy = android_open_proxy(); 762a6b24b7afb79294e6b709ede11395f13370d67a0Nick Kralevich if (proxy == NULL) goto exit; 763c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falk 7645240b562e7e9de2f31ba70f71c394c5529aadf0fPaul Jensen netid = __netdClientDispatch.netIdForResolv(netid); 7655240b562e7e9de2f31ba70f71c394c5529aadf0fPaul Jensen 7662582f02a01cd56c56a4e6c9de4444a6ec937cc37Sreeram Ramachandran /* This is writing to system/netd/server/DnsProxyListener.cpp and changes 767c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falk * here need to be matched there */ 768ea9bf6788144b83cc51c454b2bfe6b980d6e947cSzymon Jakubczak if (fprintf(proxy, "gethostbyname %u %s %d", 769ea9bf6788144b83cc51c454b2bfe6b980d6e947cSzymon Jakubczak netid, 770c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falk name == NULL ? "^" : name, 771c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falk af) < 0) { 772c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falk goto exit; 773c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falk } 774c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falk 775c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falk if (fputc(0, proxy) == EOF || fflush(proxy) != 0) { 776c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falk goto exit; 777c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falk } 778c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falk 779c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falk result = android_read_hostent(proxy); 780c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falk 781c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falkexit: 782c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falk if (proxy != NULL) { 783c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falk fclose(proxy); 784c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falk } 785c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falk return result; 786c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falk} 787c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falk 788c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falk 789c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falkstruct hostent * 790ea9bf6788144b83cc51c454b2bfe6b980d6e947cSzymon Jakubczakandroid_gethostbyaddrfornet_proxy(const void *addr, 791ea9bf6788144b83cc51c454b2bfe6b980d6e947cSzymon Jakubczak socklen_t len, int af, unsigned netid) 792c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falk{ 793c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falk struct hostent *result = NULL; 794c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falk FILE* proxy = android_open_proxy(); 795c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falk 796c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falk if (proxy == NULL) goto exit; 797c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falk 798c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falk char buf[INET6_ADDRSTRLEN]; //big enough for IPv4 and IPv6 799c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falk const char * addrStr = inet_ntop(af, addr, buf, sizeof(buf)); 800c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falk if (addrStr == NULL) goto exit; 801c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falk 8025240b562e7e9de2f31ba70f71c394c5529aadf0fPaul Jensen netid = __netdClientDispatch.netIdForResolv(netid); 8035240b562e7e9de2f31ba70f71c394c5529aadf0fPaul Jensen 804ea9bf6788144b83cc51c454b2bfe6b980d6e947cSzymon Jakubczak if (fprintf(proxy, "gethostbyaddr %s %d %d %u", 805ea9bf6788144b83cc51c454b2bfe6b980d6e947cSzymon Jakubczak addrStr, len, af, netid) < 0) { 806c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falk goto exit; 807c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falk } 808c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falk 809c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falk if (fputc(0, proxy) == EOF || fflush(proxy) != 0) { 810c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falk goto exit; 811c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falk } 812c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falk 813c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falk result = android_read_hostent(proxy); 814c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falkexit: 815c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falk if (proxy != NULL) { 816c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falk fclose(proxy); 817c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falk } 818c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falk return result; 819c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falk} 820c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falk 8211dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Projectstruct hostent * 822ea9bf6788144b83cc51c454b2bfe6b980d6e947cSzymon Jakubczakandroid_gethostbyaddrfornet_real(const void *addr, 823ea9bf6788144b83cc51c454b2bfe6b980d6e947cSzymon Jakubczak socklen_t len, int af, unsigned netid, unsigned mark) 8241dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project{ 8251dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project const u_char *uaddr = (const u_char *)addr; 8261dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project socklen_t size; 8271dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project struct hostent *hp; 8281dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project static const ns_dtab dtab[] = { 8291dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project NS_FILES_CB(_gethtbyaddr, NULL) 8301dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project { NSSRC_DNS, _dns_gethtbyaddr, NULL }, /* force -DHESIOD */ 8311dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project { 0, 0, 0 } 8321dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project }; 8331dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project 8341dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project assert(addr != NULL); 8351dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project 8363e5f0c9849bf09ad9a5b1999430aec796276d9f6Elliott Hughes if (af == AF_INET6 && len == NS_IN6ADDRSZ && 8373e5f0c9849bf09ad9a5b1999430aec796276d9f6Elliott Hughes (IN6_IS_ADDR_LINKLOCAL((const struct in6_addr *)addr) || 8383e5f0c9849bf09ad9a5b1999430aec796276d9f6Elliott Hughes IN6_IS_ADDR_SITELOCAL((const struct in6_addr *)addr))) { 8391dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project h_errno = HOST_NOT_FOUND; 8401dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project return NULL; 8411dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project } 8423e5f0c9849bf09ad9a5b1999430aec796276d9f6Elliott Hughes if (af == AF_INET6 && len == NS_IN6ADDRSZ && 8433e5f0c9849bf09ad9a5b1999430aec796276d9f6Elliott Hughes (IN6_IS_ADDR_V4MAPPED((const struct in6_addr *)addr) || 8443e5f0c9849bf09ad9a5b1999430aec796276d9f6Elliott Hughes IN6_IS_ADDR_V4COMPAT((const struct in6_addr *)addr))) { 8451dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project /* Unmap. */ 8463e5f0c9849bf09ad9a5b1999430aec796276d9f6Elliott Hughes uaddr += NS_IN6ADDRSZ - NS_INADDRSZ; 8473e5f0c9849bf09ad9a5b1999430aec796276d9f6Elliott Hughes addr = uaddr; 8481dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project af = AF_INET; 8493e5f0c9849bf09ad9a5b1999430aec796276d9f6Elliott Hughes len = NS_INADDRSZ; 8501dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project } 8511dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project switch (af) { 8521dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project case AF_INET: 8533e5f0c9849bf09ad9a5b1999430aec796276d9f6Elliott Hughes size = NS_INADDRSZ; 8541dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project break; 8551dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project case AF_INET6: 8563e5f0c9849bf09ad9a5b1999430aec796276d9f6Elliott Hughes size = NS_IN6ADDRSZ; 8571dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project break; 8581dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project default: 8591dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project errno = EAFNOSUPPORT; 8601dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project h_errno = NETDB_INTERNAL; 8611dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project return NULL; 8621dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project } 8631dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project if (size != len) { 8641dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project errno = EINVAL; 8651dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project h_errno = NETDB_INTERNAL; 8661dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project return NULL; 8671dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project } 8681dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project hp = NULL; 8691dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project h_errno = NETDB_INTERNAL; 8701dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project if (nsdispatch(&hp, dtab, NSDB_HOSTS, "gethostbyaddr", 871ea9bf6788144b83cc51c454b2bfe6b980d6e947cSzymon Jakubczak default_dns_files, uaddr, len, af, netid, mark) != NS_SUCCESS) 8721dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project return NULL; 8731dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project h_errno = NETDB_SUCCESS; 8741dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project return hp; 8751dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project} 8761dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project 877c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falkstruct hostent * 878ea9bf6788144b83cc51c454b2bfe6b980d6e947cSzymon Jakubczakandroid_gethostbyaddrfornet(const void *addr, socklen_t len, int af, unsigned netid, unsigned mark) 879c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falk{ 880c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falk const char *cache_mode = getenv("ANDROID_DNS_MODE"); 881c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falk 882c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falk if (cache_mode == NULL || strcmp(cache_mode, "local") != 0) { 883ea9bf6788144b83cc51c454b2bfe6b980d6e947cSzymon Jakubczak return android_gethostbyaddrfornet_proxy(addr, len, af, netid); 884c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falk } else { 885ea9bf6788144b83cc51c454b2bfe6b980d6e947cSzymon Jakubczak return android_gethostbyaddrfornet_real(addr,len, af, netid, mark); 886c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falk } 887c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falk} 888c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falk 889c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falkstruct hostent * 890c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falkgethostbyaddr(const void *addr, socklen_t len, int af) 891c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falk{ 892ea9bf6788144b83cc51c454b2bfe6b980d6e947cSzymon Jakubczak return android_gethostbyaddrfornet(addr, len, af, NETID_UNSET, MARK_UNSET); 893c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falk} 894c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falk 895c63e59039d28c352e3053bb81319e960c392dbd4Mattias Falk 896e5c35e075fad5b5c143971c4401a360f6eaf5470Jim Huangstatic void 8971dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project_sethtent(int f) 8981dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project{ 8991dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project res_static rs = __res_get_static(); 9001dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project if (rs == NULL) return; 9011dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project if (!rs->hostf) 9021dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project rs->hostf = fopen(_PATH_HOSTS, "r" ); 9031dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project else 9041dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project rewind(rs->hostf); 9051dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project rs->stayopen = f; 9061dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project} 9071dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project 908e5c35e075fad5b5c143971c4401a360f6eaf5470Jim Huangstatic void 9091dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project_endhtent(void) 9101dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project{ 9111dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project res_static rs = __res_get_static(); 9121dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project if (rs == NULL) return; 9131dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project 9141dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project if (rs->hostf && !rs->stayopen) { 9151dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project (void) fclose(rs->hostf); 9161dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project rs->hostf = NULL; 9171dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project } 9181dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project} 9191dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project 920e5c35e075fad5b5c143971c4401a360f6eaf5470Jim Huangstatic struct hostent * 9211dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project_gethtent(void) 9221dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project{ 9231dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project char *p; 9241dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project char *cp, **q; 9251dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project int af, len; 9261dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project res_static rs = __res_get_static(); 9271dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project 9281dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project if (!rs->hostf && !(rs->hostf = fopen(_PATH_HOSTS, "r" ))) { 9291dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project h_errno = NETDB_INTERNAL; 9301dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project return NULL; 9311dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project } 9321dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project again: 9331dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project if (!(p = fgets(rs->hostbuf, sizeof rs->hostbuf, rs->hostf))) { 9341dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project h_errno = HOST_NOT_FOUND; 9351dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project return NULL; 9361dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project } 9371dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project if (*p == '#') 9381dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project goto again; 9391dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project if (!(cp = strpbrk(p, "#\n"))) 9401dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project goto again; 9411dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project *cp = '\0'; 9421dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project if (!(cp = strpbrk(p, " \t"))) 9431dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project goto again; 9441dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project *cp++ = '\0'; 9451dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project if (inet_pton(AF_INET6, p, (char *)(void *)rs->host_addr) > 0) { 9461dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project af = AF_INET6; 9471dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project len = IN6ADDRSZ; 9481dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project } else if (inet_pton(AF_INET, p, (char *)(void *)rs->host_addr) > 0) { 9491dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project res_state res = __res_get_state(); 9501dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project if (res == NULL) 9511dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project return NULL; 9521dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project if (res->options & RES_USE_INET6) { 9531dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project map_v4v6_address((char *)(void *)rs->host_addr, 9541dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project (char *)(void *)rs->host_addr); 9551dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project af = AF_INET6; 9561dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project len = IN6ADDRSZ; 9571dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project } else { 9581dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project af = AF_INET; 9591dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project len = INADDRSZ; 9601dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project } 9611dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project __res_put_state(res); 9621dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project } else { 9631dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project goto again; 9641dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project } 9651dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project /* if this is not something we're looking for, skip it. */ 9661dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project if (rs->host.h_addrtype != 0 && rs->host.h_addrtype != af) 9671dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project goto again; 9681dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project if (rs->host.h_length != 0 && rs->host.h_length != len) 9691dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project goto again; 9701dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project rs->h_addr_ptrs[0] = (char *)(void *)rs->host_addr; 9711dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project rs->h_addr_ptrs[1] = NULL; 9721dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project rs->host.h_addr_list = rs->h_addr_ptrs; 9731dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project rs->host.h_length = len; 9741dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project rs->host.h_addrtype = af; 9751dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project while (*cp == ' ' || *cp == '\t') 9761dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project cp++; 9771dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project rs->host.h_name = cp; 9781dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project q = rs->host.h_aliases = rs->host_aliases; 9791dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project if ((cp = strpbrk(cp, " \t")) != NULL) 9801dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project *cp++ = '\0'; 9811dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project while (cp && *cp) { 9821dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project if (*cp == ' ' || *cp == '\t') { 9831dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project cp++; 9841dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project continue; 9851dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project } 9861dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project if (q < &rs->host_aliases[MAXALIASES - 1]) 9871dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project *q++ = cp; 9881dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project if ((cp = strpbrk(cp, " \t")) != NULL) 9891dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project *cp++ = '\0'; 9901dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project } 9911dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project *q = NULL; 9921dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project h_errno = NETDB_SUCCESS; 9931dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project return &rs->host; 9941dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project} 9951dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project 9961dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project/*ARGSUSED*/ 9971dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Projectint 9981dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project_gethtbyname(void *rv, void *cb_data, va_list ap) 9991dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project{ 10001dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project struct hostent *hp; 10011dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project const char *name; 10021dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project int af; 10031dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project 10041dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project assert(rv != NULL); 10051dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project 10061dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project name = va_arg(ap, char *); 10071dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project /* NOSTRICT skip len */(void)va_arg(ap, int); 10081dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project af = va_arg(ap, int); 10091dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project 10101dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project hp = NULL; 10111dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project#if 0 10121dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project { 10131dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project res_state res = __res_get_state(); 10141dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project if (res == NULL) 10151dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project return NS_NOTFOUND; 10161dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project if (res->options & RES_USE_INET6) 10171dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project hp = _gethtbyname2(name, AF_INET6); 10181dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project if (hp==NULL) 10191dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project hp = _gethtbyname2(name, AF_INET); 10201dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project __res_put_state(res); 10211dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project } 10221dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project#else 10231dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project hp = _gethtbyname2(name, af); 10241dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project#endif 10251dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project *((struct hostent **)rv) = hp; 10261dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project if (hp == NULL) { 10271dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project h_errno = HOST_NOT_FOUND; 10281dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project return NS_NOTFOUND; 10291dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project } 10301dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project return NS_SUCCESS; 10311dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project} 10321dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project 1033e5c35e075fad5b5c143971c4401a360f6eaf5470Jim Huangstatic struct hostent * 10341dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project_gethtbyname2(const char *name, int af) 10351dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project{ 10361dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project struct hostent *p; 10371dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project char *tmpbuf, *ptr, **cp; 10381dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project int num; 10391dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project size_t len; 10401dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project res_static rs = __res_get_static(); 10411dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project 10421dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project assert(name != NULL); 10431dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project 10441dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project _sethtent(rs->stayopen); 10451dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project ptr = tmpbuf = NULL; 10461dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project num = 0; 10471dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project while ((p = _gethtent()) != NULL && num < MAXADDRS) { 10481dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project if (p->h_addrtype != af) 10491dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project continue; 10501dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project if (strcasecmp(p->h_name, name) != 0) { 10511dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project for (cp = p->h_aliases; *cp != NULL; cp++) 10521dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project if (strcasecmp(*cp, name) == 0) 10531dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project break; 10541dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project if (*cp == NULL) continue; 10551dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project } 10561dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project 10571dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project if (num == 0) { 10581dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project size_t bufsize; 10591dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project char *src; 10601dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project 10611dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project bufsize = strlen(p->h_name) + 2 + 10621dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project MAXADDRS * p->h_length + 10631dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project ALIGNBYTES; 10641dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project for (cp = p->h_aliases; *cp != NULL; cp++) 10651dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project bufsize += strlen(*cp) + 1; 10661dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project 10671dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project if ((tmpbuf = malloc(bufsize)) == NULL) { 10681dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project h_errno = NETDB_INTERNAL; 10691dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project return NULL; 10701dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project } 10711dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project 10721dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project ptr = tmpbuf; 10731dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project src = p->h_name; 10741dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project while ((*ptr++ = *src++) != '\0'); 10751dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project for (cp = p->h_aliases; *cp != NULL; cp++) { 10761dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project src = *cp; 10771dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project while ((*ptr++ = *src++) != '\0'); 10781dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project } 10791dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project *ptr++ = '\0'; 10801dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project 10811dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project ptr = (char *)(void *)ALIGN(ptr); 10821dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project } 10831dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project 10841dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project (void)memcpy(ptr, p->h_addr_list[0], (size_t)p->h_length); 10851dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project ptr += p->h_length; 10861dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project num++; 10871dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project } 10881dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project _endhtent(); 10891dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project if (num == 0) return NULL; 10901dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project 10911dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project len = ptr - tmpbuf; 10921dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project if (len > (sizeof(rs->hostbuf) - ALIGNBYTES)) { 10931dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project free(tmpbuf); 10941dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project errno = ENOSPC; 10951dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project h_errno = NETDB_INTERNAL; 10961dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project return NULL; 10971dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project } 10981dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project ptr = memcpy((void *)ALIGN(rs->hostbuf), tmpbuf, len); 10991dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project free(tmpbuf); 11001dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project 11011dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project rs->host.h_name = ptr; 11021dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project while (*ptr++); 11031dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project 11041dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project cp = rs->host_aliases; 11051dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project while (*ptr) { 11061dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project *cp++ = ptr; 11071dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project while (*ptr++); 11081dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project } 11091dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project ptr++; 11101dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project *cp = NULL; 11111dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project 11121dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project ptr = (char *)(void *)ALIGN(ptr); 11131dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project cp = rs->h_addr_ptrs; 11141dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project while (num--) { 11151dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project *cp++ = ptr; 11161dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project ptr += rs->host.h_length; 11171dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project } 11181dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project *cp = NULL; 11191dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project 11201dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project return &rs->host; 11211dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project} 11221dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project 11231dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project/*ARGSUSED*/ 1124e5c35e075fad5b5c143971c4401a360f6eaf5470Jim Huangstatic int 11251dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project_gethtbyaddr(void *rv, void *cb_data, va_list ap) 11261dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project{ 11271dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project struct hostent *p; 11281dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project const unsigned char *addr; 11291dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project int len, af; 11301dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project res_static rs = __res_get_static(); 11311dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project 11321dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project assert(rv != NULL); 11331dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project 11341dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project addr = va_arg(ap, unsigned char *); 11351dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project len = va_arg(ap, int); 11361dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project af = va_arg(ap, int); 11371dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project 11381dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project rs->host.h_length = len; 11391dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project rs->host.h_addrtype = af; 11401dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project 11411dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project _sethtent(rs->stayopen); 11421dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project while ((p = _gethtent()) != NULL) 11431dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project if (p->h_addrtype == af && !memcmp(p->h_addr, addr, 11441dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project (size_t)len)) 11451dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project break; 11461dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project _endhtent(); 11471dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project *((struct hostent **)rv) = p; 11481dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project if (p==NULL) { 11491dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project h_errno = HOST_NOT_FOUND; 11501dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project return NS_NOTFOUND; 11511dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project } 11521dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project return NS_SUCCESS; 11531dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project} 11541dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project 11551dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Projectstatic void 11561dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Projectmap_v4v6_address(const char *src, char *dst) 11571dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project{ 11581dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project u_char *p = (u_char *)dst; 11591dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project char tmp[INADDRSZ]; 11601dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project int i; 11611dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project 11621dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project assert(src != NULL); 11631dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project assert(dst != NULL); 11641dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project 11651dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project /* Stash a temporary copy so our caller can update in place. */ 11661dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project (void)memcpy(tmp, src, INADDRSZ); 11671dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project /* Mark this ipv6 addr as a mapped ipv4. */ 11681dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project for (i = 0; i < 10; i++) 11691dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project *p++ = 0x00; 11701dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project *p++ = 0xff; 11711dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project *p++ = 0xff; 11721dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project /* Retrieve the saved copy and we're done. */ 11731dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project (void)memcpy((void *)p, tmp, INADDRSZ); 11741dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project} 11751dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project 11761dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Projectstatic void 11771dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Projectmap_v4v6_hostent(struct hostent *hp, char **bpp, char *ep) 11781dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project{ 11791dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project char **ap; 11801dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project 11811dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project assert(hp != NULL); 11821dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project assert(bpp != NULL); 11831dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project assert(ep != NULL); 11841dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project 11851dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project if (hp->h_addrtype != AF_INET || hp->h_length != INADDRSZ) 11861dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project return; 11871dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project hp->h_addrtype = AF_INET6; 11881dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project hp->h_length = IN6ADDRSZ; 11891dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project for (ap = hp->h_addr_list; *ap; ap++) { 11901dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project int i = sizeof(align) - (size_t)((u_long)*bpp % sizeof(align)); 11911dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project 11921dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project if (ep - *bpp < (i + IN6ADDRSZ)) { 11931dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project /* Out of memory. Truncate address list here. XXX */ 11941dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project *ap = NULL; 11951dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project return; 11961dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project } 11971dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project *bpp += i; 11981dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project map_v4v6_address(*ap, *bpp); 11991dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project *ap = *bpp; 12001dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project *bpp += IN6ADDRSZ; 12011dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project } 12021dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project} 12031dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project 12041dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Projectstatic void 12051dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Projectaddrsort(char **ap, int num, res_state res) 12061dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project{ 12071dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project int i, j; 12081dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project char **p; 12091dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project short aval[MAXADDRS]; 12101dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project int needsort = 0; 12111dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project 12121dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project assert(ap != NULL); 12131dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project 12141dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project p = ap; 12151dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project for (i = 0; i < num; i++, p++) { 12161dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project for (j = 0 ; (unsigned)j < res->nsort; j++) 12171dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project if (res->sort_list[j].addr.s_addr == 12181dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project (((struct in_addr *)(void *)(*p))->s_addr & 12191dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project res->sort_list[j].mask)) 12201dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project break; 12211dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project aval[i] = j; 12221dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project if (needsort == 0 && i > 0 && j < aval[i-1]) 12231dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project needsort = i; 12241dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project } 12251dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project if (!needsort) 12261dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project return; 12271dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project 12281dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project while (needsort < num) { 12291dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project for (j = needsort - 1; j >= 0; j--) { 12301dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project if (aval[j] > aval[j+1]) { 12311dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project char *hp; 12321dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project 12331dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project i = aval[j]; 12341dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project aval[j] = aval[j+1]; 12351dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project aval[j+1] = i; 12361dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project 12371dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project hp = ap[j]; 12381dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project ap[j] = ap[j+1]; 12391dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project ap[j+1] = hp; 12401dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project } else 12411dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project break; 12421dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project } 12431dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project needsort++; 12441dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project } 12451dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project} 12461dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project 12471dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Projectstruct hostent * 12481dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Projectgethostent(void) 12491dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project{ 12501dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project res_static rs = __res_get_static(); 12511dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project rs->host.h_addrtype = 0; 12521dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project rs->host.h_length = 0; 12531dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project return _gethtent(); 12541dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project} 12551dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project 12561dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project/*ARGSUSED*/ 1257e5c35e075fad5b5c143971c4401a360f6eaf5470Jim Huangstatic int 12581dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project_dns_gethtbyname(void *rv, void *cb_data, va_list ap) 12591dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project{ 12601dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project querybuf *buf; 12611dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project int n, type; 12621dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project struct hostent *hp; 12631dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project const char *name; 12641dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project int af; 12651dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project res_state res; 12661dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project 12671dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project assert(rv != NULL); 12681dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project 12691dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project name = va_arg(ap, char *); 12701dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project /* NOSTRICT skip len */(void)va_arg(ap, int); 12711dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project af = va_arg(ap, int); 12721dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project 12731dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project switch (af) { 12741dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project case AF_INET: 12751dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project type = T_A; 12761dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project break; 12771dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project case AF_INET6: 12781dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project type = T_AAAA; 12791dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project break; 12801dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project default: 12811dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project return NS_UNAVAIL; 12821dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project } 12831dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project buf = malloc(sizeof(*buf)); 12841dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project if (buf == NULL) { 12851dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project h_errno = NETDB_INTERNAL; 12861dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project return NS_NOTFOUND; 12871dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project } 12881dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project res = __res_get_state(); 12891dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project if (res == NULL) { 12901dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project free(buf); 12911dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project return NS_NOTFOUND; 12921dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project } 12931dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project n = res_nsearch(res, name, C_IN, type, buf->buf, sizeof(buf->buf)); 12941dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project if (n < 0) { 12951dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project free(buf); 12961dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project dprintf("res_nsearch failed (%d)\n", res, n); 12971dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project __res_put_state(res); 12981dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project return NS_NOTFOUND; 12991dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project } 13001dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project hp = getanswer(buf, n, name, type, res); 13011dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project free(buf); 13021dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project __res_put_state(res); 13031dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project if (hp == NULL) 13041dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project switch (h_errno) { 13051dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project case HOST_NOT_FOUND: 13061dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project return NS_NOTFOUND; 13071dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project case TRY_AGAIN: 13081dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project return NS_TRYAGAIN; 13091dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project default: 13101dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project return NS_UNAVAIL; 13111dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project } 13121dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project *((struct hostent **)rv) = hp; 13131dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project return NS_SUCCESS; 13141dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project} 13151dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project 13161dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project/*ARGSUSED*/ 1317e5c35e075fad5b5c143971c4401a360f6eaf5470Jim Huangstatic int 13181dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project_dns_gethtbyaddr(void *rv, void *cb_data, va_list ap) 13191dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project{ 13201dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project char qbuf[MAXDNAME + 1], *qp, *ep; 13211dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project int n; 13221dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project querybuf *buf; 13231dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project struct hostent *hp; 13241dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project const unsigned char *uaddr; 13251dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project int len, af, advance; 13261dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project res_state res; 1327ea9bf6788144b83cc51c454b2bfe6b980d6e947cSzymon Jakubczak unsigned netid, mark; 13281dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project res_static rs = __res_get_static(); 13291dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project 13301dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project assert(rv != NULL); 13311dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project 13321dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project uaddr = va_arg(ap, unsigned char *); 13331dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project len = va_arg(ap, int); 13341dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project af = va_arg(ap, int); 1335ea9bf6788144b83cc51c454b2bfe6b980d6e947cSzymon Jakubczak netid = va_arg(ap, unsigned); 1336ea9bf6788144b83cc51c454b2bfe6b980d6e947cSzymon Jakubczak mark = va_arg(ap, unsigned); 13371dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project 13381dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project switch (af) { 13391dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project case AF_INET: 13401dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project (void)snprintf(qbuf, sizeof(qbuf), "%u.%u.%u.%u.in-addr.arpa", 13411dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project (uaddr[3] & 0xff), (uaddr[2] & 0xff), 13421dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project (uaddr[1] & 0xff), (uaddr[0] & 0xff)); 13431dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project break; 13441dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project 13451dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project case AF_INET6: 13461dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project qp = qbuf; 13471dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project ep = qbuf + sizeof(qbuf) - 1; 13481dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project for (n = IN6ADDRSZ - 1; n >= 0; n--) { 13491dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project advance = snprintf(qp, (size_t)(ep - qp), "%x.%x.", 13501dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project uaddr[n] & 0xf, 13511dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project ((unsigned int)uaddr[n] >> 4) & 0xf); 13521dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project if (advance > 0 && qp + advance < ep) 13531dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project qp += advance; 13541dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project else { 13551dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project h_errno = NETDB_INTERNAL; 13561dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project return NS_NOTFOUND; 13571dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project } 13581dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project } 13591dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project if (strlcat(qbuf, "ip6.arpa", sizeof(qbuf)) >= sizeof(qbuf)) { 13601dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project h_errno = NETDB_INTERNAL; 13611dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project return NS_NOTFOUND; 13621dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project } 13631dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project break; 13641dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project default: 13651dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project abort(); 13661dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project } 13671dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project 13681dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project buf = malloc(sizeof(*buf)); 13691dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project if (buf == NULL) { 13701dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project h_errno = NETDB_INTERNAL; 13711dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project return NS_NOTFOUND; 13721dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project } 13731dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project res = __res_get_state(); 13741dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project if (res == NULL) { 13751dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project free(buf); 13761dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project return NS_NOTFOUND; 13771dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project } 1378ea9bf6788144b83cc51c454b2bfe6b980d6e947cSzymon Jakubczak res_setnetid(res, netid); 1379c39214e0ac49b9f7de6fd9989331145c6e1cd584Chad Brubaker res_setmark(res, mark); 13801dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project n = res_nquery(res, qbuf, C_IN, T_PTR, buf->buf, sizeof(buf->buf)); 13811dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project if (n < 0) { 13821dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project free(buf); 13831dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project dprintf("res_nquery failed (%d)\n", res, n); 13841dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project __res_put_state(res); 13851dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project return NS_NOTFOUND; 13861dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project } 13871dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project hp = getanswer(buf, n, qbuf, T_PTR, res); 13881dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project free(buf); 13891dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project if (hp == NULL) { 13901dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project __res_put_state(res); 13911dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project switch (h_errno) { 13921dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project case HOST_NOT_FOUND: 13931dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project return NS_NOTFOUND; 13941dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project case TRY_AGAIN: 13951dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project return NS_TRYAGAIN; 13961dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project default: 13971dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project return NS_UNAVAIL; 13981dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project } 13991dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project } 14001dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project hp->h_addrtype = af; 14011dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project hp->h_length = len; 14021dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project (void)memcpy(rs->host_addr, uaddr, (size_t)len); 14031dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project rs->h_addr_ptrs[0] = (char *)(void *)rs->host_addr; 14041dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project rs->h_addr_ptrs[1] = NULL; 14051dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project if (af == AF_INET && (res->options & RES_USE_INET6)) { 14061dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project map_v4v6_address((char *)(void *)rs->host_addr, 14071dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project (char *)(void *)rs->host_addr); 14081dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project hp->h_addrtype = AF_INET6; 14091dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project hp->h_length = IN6ADDRSZ; 14101dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project } 14111dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project 14121dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project __res_put_state(res); 14131dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project *((struct hostent **)rv) = hp; 14141dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project h_errno = NETDB_SUCCESS; 14151dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project return NS_SUCCESS; 14161dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project} 1417