1 /* $NetBSD: res_init.c,v 1.8 2006/03/19 03:10:08 christos Exp $ */
2
3 /*
4 * Copyright (c) 1985, 1989, 1993
5 * The Regents of the University of California. All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. All advertising materials mentioning features or use of this software
16 * must display the following acknowledgement:
17 * This product includes software developed by the University of
18 * California, Berkeley and its contributors.
19 * 4. Neither the name of the University nor the names of its contributors
20 * may be used to endorse or promote products derived from this software
21 * without specific prior written permission.
22 *
23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 * SUCH DAMAGE.
34 */
35
36 /*
37 * Portions Copyright (c) 1993 by Digital Equipment Corporation.
38 *
39 * Permission to use, copy, modify, and distribute this software for any
40 * purpose with or without fee is hereby granted, provided that the above
41 * copyright notice and this permission notice appear in all copies, and that
42 * the name of Digital Equipment Corporation not be used in advertising or
43 * publicity pertaining to distribution of the document or software without
44 * specific, written prior permission.
45 *
46 * THE SOFTWARE IS PROVIDED "AS IS" AND DIGITAL EQUIPMENT CORP. DISCLAIMS ALL
47 * WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES
48 * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL DIGITAL EQUIPMENT
49 * CORPORATION BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
50 * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
51 * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
52 * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
53 * SOFTWARE.
54 */
55
56 /*
57 * Copyright (c) 2004 by Internet Systems Consortium, Inc. ("ISC")
58 * Portions Copyright (c) 1996-1999 by Internet Software Consortium.
59 *
60 * Permission to use, copy, modify, and distribute this software for any
61 * purpose with or without fee is hereby granted, provided that the above
62 * copyright notice and this permission notice appear in all copies.
63 *
64 * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES
65 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
66 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR
67 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
68 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
69 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
70 * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
71 */
72
73 #define LOG_TAG "resolv"
74
75 #include <sys/param.h>
76 #include <sys/socket.h>
77 #include <sys/time.h>
78
79 #include <arpa/inet.h>
80 #include <arpa/nameser.h>
81 #include <netinet/in.h>
82
83 #include <android-base/logging.h>
84 #include <ctype.h>
85 #include <errno.h>
86 #include <fcntl.h>
87 #include <netdb.h>
88 #include <stdlib.h>
89 #include <string.h>
90 #include <unistd.h>
91
92 #include "netd_resolv/resolv.h"
93 #include "resolv_private.h"
94 #include "stats.pb.h"
95
res_init(ResState * statp,const struct android_net_context * _Nonnull netcontext,android::net::NetworkDnsEventReported * _Nonnull event)96 void res_init(ResState* statp, const struct android_net_context* _Nonnull netcontext,
97 android::net::NetworkDnsEventReported* _Nonnull event) {
98 statp->netid = netcontext->dns_netid;
99 statp->uid = netcontext->uid;
100 statp->pid = netcontext->pid;
101 statp->id = arc4random_uniform(65536);
102
103 for (auto& sock : statp->nssocks) {
104 sock.reset();
105 }
106 statp->ndots = 1;
107 statp->_mark = netcontext->dns_mark;
108 statp->tcp_nssock.reset();
109 statp->event = event;
110 statp->netcontext_flags = netcontext->flags;
111 }
112
113 // TODO: Have some proper constructors for ResState instead of this method and res_init().
fromResState(const ResState & other,android::net::NetworkDnsEventReported * event)114 ResState fromResState(const ResState& other, android::net::NetworkDnsEventReported* event) {
115 ResState resOutput;
116 resOutput.netid = other.netid;
117 resOutput.uid = other.uid;
118 resOutput.pid = other.pid;
119 resOutput.id = other.id;
120
121 resOutput.nsaddrs = other.nsaddrs;
122
123 for (auto& sock : resOutput.nssocks) {
124 sock.reset();
125 }
126
127 resOutput.ndots = other.ndots;
128 resOutput._mark = other._mark;
129 resOutput.tcp_nssock.reset();
130 resOutput.event = event;
131 resOutput.netcontext_flags = other.netcontext_flags;
132 return resOutput;
133 }
134