blob: f06513259b0d015a65b3bdabe5c9b284cbf28420 [file] [log] [blame]
Simon Kelley2a8710a2020-01-05 16:40:06 +00001/* dnsmasq is Copyright (c) 2000-2020 Simon Kelley
Simon Kelley824af852008-02-12 20:43:05 +00002
Simon Kelley9e4abcb2004-01-22 19:47:41 +00003 This program is free software; you can redistribute it and/or modify
4 it under the terms of the GNU General Public License as published by
Simon Kelley824af852008-02-12 20:43:05 +00005 the Free Software Foundation; version 2 dated June, 1991, or
6 (at your option) version 3 dated 29 June, 2007.
7
Simon Kelley9e4abcb2004-01-22 19:47:41 +00008 This program is distributed in the hope that it will be useful,
9 but WITHOUT ANY WARRANTY; without even the implied warranty of
10 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 GNU General Public License for more details.
Simon Kelley824af852008-02-12 20:43:05 +000012
Simon Kelley73a08a22009-02-05 20:28:08 +000013 You should have received a copy of the GNU General Public License
14 along with this program. If not, see <http://www.gnu.org/licenses/>.
Simon Kelley9e4abcb2004-01-22 19:47:41 +000015*/
16
Simon Kelley2a8710a2020-01-05 16:40:06 +000017#define COPYRIGHT "Copyright (c) 2000-2020 Simon Kelley"
Simon Kelley9e4abcb2004-01-22 19:47:41 +000018
Christian Hesseb697fbb2017-09-25 17:36:24 +010019/* We do defines that influence behavior of stdio.h, so complain
20 if included too early. */
21#ifdef _STDIO_H
22# error "Header file stdio.h included too early!"
23#endif
24
Simon Kelley1a6bca82008-07-11 11:11:42 +010025#ifndef NO_LARGEFILE
Simon Kelley9e038942008-05-30 20:06:34 +010026/* Ensure we can use files >2GB (log files may grow this big) */
Simon Kelley1a6bca82008-07-11 11:11:42 +010027# define _LARGEFILE_SOURCE 1
28# define _FILE_OFFSET_BITS 64
29#endif
Simon Kelley9e038942008-05-30 20:06:34 +010030
Simon Kelley8ef5ada2010-06-03 19:42:45 +010031/* Get linux C library versions and define _GNU_SOURCE for kFreeBSD. */
32#if defined(__linux__) || defined(__GLIBC__)
Simon Kelley572b41e2011-02-18 18:11:18 +000033# ifndef __ANDROID__
34# define _GNU_SOURCE
35# endif
Simon Kelley9e038942008-05-30 20:06:34 +010036# include <features.h>
37#endif
38
Simon Kelley316e2732010-01-22 20:16:09 +000039/* Need these defined early */
40#if defined(__sun) || defined(__sun__)
41# define _XPG4_2
42# define __EXTENSIONS__
43#endif
44
Petr Menšík282eab72018-08-15 19:41:07 +020045#if (defined(__GNUC__) && __GNUC__ >= 3) || defined(__clang__)
46#define ATTRIBUTE_NORETURN __attribute__ ((noreturn))
47#else
48#define ATTRIBUTE_NORETURN
49#endif
50
Simon Kelley9e4abcb2004-01-22 19:47:41 +000051/* get these before config.h for IPv6 stuff... */
Simon Kelley44a2a312004-03-10 20:04:35 +000052#include <sys/types.h>
Simon Kelley1f15b812009-10-13 17:49:32 +010053#include <sys/socket.h>
Simon Kelleyc72daea2012-01-05 21:33:27 +000054
55#ifdef __APPLE__
56/* Define before netinet/in.h to select API. OSX Lion onwards. */
57# define __APPLE_USE_RFC_3542
58#endif
Simon Kelley9e4abcb2004-01-22 19:47:41 +000059#include <netinet/in.h>
60
Simon Kelleyc72daea2012-01-05 21:33:27 +000061/* Also needed before config.h. */
Simon Kelley59353a62004-11-21 19:34:28 +000062#include <getopt.h>
63
Simon Kelley9e4abcb2004-01-22 19:47:41 +000064#include "config.h"
Simon Kelleyc3a04082014-01-11 22:18:19 +000065#include "ip6addr.h"
Julian Kornbergeraba8bbb2018-07-21 21:55:08 +010066#include "metrics.h"
Simon Kelleyb8187c82005-11-26 21:46:27 +000067
Simon Kelley572b41e2011-02-18 18:11:18 +000068typedef unsigned char u8;
69typedef unsigned short u16;
70typedef unsigned int u32;
Simon Kelley52b92f42012-01-22 16:05:15 +000071typedef unsigned long long u64;
Simon Kelley572b41e2011-02-18 18:11:18 +000072
Giovanni Bajo28c62552012-04-25 17:40:13 +020073#define countof(x) (long)(sizeof(x) / sizeof(x[0]))
74#define MIN(a,b) ((a) < (b) ? (a) : (b))
75
Simon Kelleyc239f7d2012-02-27 10:56:18 +000076#include "dns-protocol.h"
77#include "dhcp-protocol.h"
Simon Kelleyc72daea2012-01-05 21:33:27 +000078#ifdef HAVE_DHCP6
Simon Kelleyc239f7d2012-02-27 10:56:18 +000079#include "dhcp6-protocol.h"
80#include "radv-protocol.h"
Simon Kelleyc72daea2012-01-05 21:33:27 +000081#endif
Simon Kelley572b41e2011-02-18 18:11:18 +000082
Simon Kelleyb8187c82005-11-26 21:46:27 +000083#define gettext_noop(S) (S)
Simon Kelley824af852008-02-12 20:43:05 +000084#ifndef LOCALEDIR
Simon Kelleyb8187c82005-11-26 21:46:27 +000085# define _(S) (S)
86#else
87# include <libintl.h>
88# include <locale.h>
89# define _(S) gettext(S)
90#endif
91
Simon Kelley9e4abcb2004-01-22 19:47:41 +000092#include <arpa/inet.h>
93#include <sys/stat.h>
Simon Kelley9e4abcb2004-01-22 19:47:41 +000094#include <sys/ioctl.h>
Simon Kelley824af852008-02-12 20:43:05 +000095#if defined(HAVE_SOLARIS_NETWORK)
Simon Kelley316e2732010-01-22 20:16:09 +000096# include <sys/sockio.h>
Simon Kelley824af852008-02-12 20:43:05 +000097#endif
Simon Kelleyb842bc92015-07-12 21:09:11 +010098#include <sys/poll.h>
Simon Kelleyfeba5c12004-07-27 20:28:58 +010099#include <sys/wait.h>
Simon Kelley9e4abcb2004-01-22 19:47:41 +0000100#include <sys/time.h>
Simon Kelleyf2621c72007-04-29 19:47:21 +0100101#include <sys/un.h>
Simon Kelley8a911cc2004-03-16 18:35:52 +0000102#include <limits.h>
Simon Kelley9e4abcb2004-01-22 19:47:41 +0000103#include <net/if.h>
Simon Kelley316e2732010-01-22 20:16:09 +0000104#if defined(HAVE_SOLARIS_NETWORK) && !defined(ifr_mtu)
105/* Some solaris net/if./h omit this. */
106# define ifr_mtu ifr_ifru.ifru_metric
107#endif
Simon Kelley9e4abcb2004-01-22 19:47:41 +0000108#include <unistd.h>
109#include <stdio.h>
110#include <string.h>
111#include <stdlib.h>
112#include <fcntl.h>
113#include <ctype.h>
114#include <signal.h>
Simon Kelley9e038942008-05-30 20:06:34 +0100115#include <stddef.h>
Simon Kelley9e4abcb2004-01-22 19:47:41 +0000116#include <time.h>
117#include <errno.h>
118#include <pwd.h>
119#include <grp.h>
Simon Kelleyf6b7dc42005-01-23 12:06:08 +0000120#include <stdarg.h>
Simon Kelley572b41e2011-02-18 18:11:18 +0000121#if defined(__OpenBSD__) || defined(__NetBSD__) || defined(__sun__) || defined (__sun) || defined (__ANDROID__)
Simon Kelley44a2a312004-03-10 20:04:35 +0000122# include <netinet/if_ether.h>
123#else
124# include <net/ethernet.h>
125#endif
Simon Kelley9e4abcb2004-01-22 19:47:41 +0000126#include <net/if_arp.h>
127#include <netinet/in_systm.h>
128#include <netinet/ip.h>
Simon Kelley6b173352018-05-08 18:32:14 +0100129#include <netinet/ip6.h>
Simon Kelley3be34542004-09-11 19:12:13 +0100130#include <netinet/ip_icmp.h>
Simon Kelley608aa9f2019-03-10 22:44:15 +0000131#include <netinet/tcp.h>
Simon Kelley9e4abcb2004-01-22 19:47:41 +0000132#include <sys/uio.h>
Simon Kelley849a8352006-06-09 21:02:31 +0100133#include <syslog.h>
134#include <dirent.h>
Simon Kelley5e9e0ef2006-04-17 14:24:29 +0100135#ifndef HAVE_LINUX_NETWORK
136# include <net/if_dl.h>
137#endif
138
Simon Kelley824af852008-02-12 20:43:05 +0000139#if defined(HAVE_LINUX_NETWORK)
Jiri Slaby3052ce22019-07-24 17:34:48 +0100140#include <linux/sockios.h>
Simon Kelley5e9e0ef2006-04-17 14:24:29 +0100141#include <linux/capability.h>
142/* There doesn't seem to be a universally-available
Josh Soref730c6742017-02-06 16:14:04 +0000143 userspace header for these. */
Simon Kelley5e9e0ef2006-04-17 14:24:29 +0100144extern int capset(cap_user_header_t header, cap_user_data_t data);
Simon Kelley9e038942008-05-30 20:06:34 +0100145extern int capget(cap_user_header_t header, cap_user_data_t data);
146#define LINUX_CAPABILITY_VERSION_1 0x19980330
147#define LINUX_CAPABILITY_VERSION_2 0x20071026
Simon Kelley1a6bca82008-07-11 11:11:42 +0100148#define LINUX_CAPABILITY_VERSION_3 0x20080522
Simon Kelley9e038942008-05-30 20:06:34 +0100149
Simon Kelley5e9e0ef2006-04-17 14:24:29 +0100150#include <sys/prctl.h>
Simon Kelley7622fc02009-06-04 20:32:05 +0100151#elif defined(HAVE_SOLARIS_NETWORK)
Simon Kelley824af852008-02-12 20:43:05 +0000152#include <priv.h>
Simon Kelley5e9e0ef2006-04-17 14:24:29 +0100153#endif
Simon Kelley9e4abcb2004-01-22 19:47:41 +0000154
Simon Kelleyad9c6f02017-10-27 22:13:49 +0100155#ifdef HAVE_DNSSEC
156# include <nettle/nettle-meta.h>
157#endif
158
Simon Kelley824af852008-02-12 20:43:05 +0000159/* daemon is function in the C library.... */
Simon Kelley5aabfc72007-08-29 11:24:47 +0100160#define daemon dnsmasq_daemon
161
Simon Kelleyee875042018-10-23 22:10:17 +0100162#define ADDRSTRLEN INET6_ADDRSTRLEN
163
Simon Kelley5aabfc72007-08-29 11:24:47 +0100164/* Async event queue */
165struct event_desc {
Simon Kelleyc72daea2012-01-05 21:33:27 +0000166 int event, data, msg_sz;
Simon Kelley5aabfc72007-08-29 11:24:47 +0100167};
168
Petr Menšíkc77fb9d2017-04-16 20:20:08 +0100169#define EVENT_RELOAD 1
170#define EVENT_DUMP 2
171#define EVENT_ALARM 3
172#define EVENT_TERM 4
173#define EVENT_CHILD 5
174#define EVENT_REOPEN 6
175#define EVENT_EXITED 7
176#define EVENT_KILLED 8
177#define EVENT_EXEC_ERR 9
178#define EVENT_PIPE_ERR 10
179#define EVENT_USER_ERR 11
180#define EVENT_CAP_ERR 12
181#define EVENT_PIDFILE 13
182#define EVENT_HUSER_ERR 14
183#define EVENT_GROUP_ERR 15
184#define EVENT_DIE 16
185#define EVENT_LOG_ERR 17
186#define EVENT_FORK_ERR 18
187#define EVENT_LUA_ERR 19
188#define EVENT_TFTP_ERR 20
189#define EVENT_INIT 21
190#define EVENT_NEWADDR 22
191#define EVENT_NEWROUTE 23
192#define EVENT_TIME_ERR 24
193#define EVENT_SCRIPT_LOG 25
Simon Kelley3c973ad2018-01-14 21:05:37 +0000194#define EVENT_TIME 26
Simon Kelley5aabfc72007-08-29 11:24:47 +0100195
196/* Exit codes. */
197#define EC_GOOD 0
198#define EC_BADCONF 1
199#define EC_BADNET 2
200#define EC_FILE 3
201#define EC_NOMEM 4
202#define EC_MISC 5
203#define EC_INIT_OFFSET 10
204
Simon Kelley28866e92011-02-14 20:19:14 +0000205#define OPT_BOGUSPRIV 0
206#define OPT_FILTER 1
207#define OPT_LOG 2
208#define OPT_SELFMX 3
209#define OPT_NO_HOSTS 4
210#define OPT_NO_POLL 5
211#define OPT_DEBUG 6
212#define OPT_ORDER 7
213#define OPT_NO_RESOLV 8
214#define OPT_EXPAND 9
215#define OPT_LOCALMX 10
216#define OPT_NO_NEG 11
217#define OPT_NODOTS_LOCAL 12
218#define OPT_NOWILD 13
219#define OPT_ETHERS 14
220#define OPT_RESOLV_DOMAIN 15
221#define OPT_NO_FORK 16
222#define OPT_AUTHORITATIVE 17
223#define OPT_LOCALISE 18
224#define OPT_DBUS 19
225#define OPT_DHCP_FQDN 20
226#define OPT_NO_PING 21
227#define OPT_LEASE_RO 22
228#define OPT_ALL_SERVERS 23
229#define OPT_RELOAD 24
230#define OPT_LOCAL_REBIND 25
231#define OPT_TFTP_SECURE 26
232#define OPT_TFTP_NOBLOCK 27
233#define OPT_LOG_OPTS 28
Floris Bos60704f52017-04-09 22:22:49 +0100234#define OPT_TFTP_APREF_IP 29
Simon Kelley28866e92011-02-14 20:19:14 +0000235#define OPT_NO_OVERRIDE 30
236#define OPT_NO_REBIND 31
237#define OPT_ADD_MAC 32
Giovanni Bajo237724c2012-04-05 02:46:52 +0200238#define OPT_DNSSEC_PROXY 33
Simon Kelley7de060b2011-08-26 17:24:52 +0100239#define OPT_CONSEC_ADDR 34
240#define OPT_CONNTRACK 35
Simon Kelleyc72daea2012-01-05 21:33:27 +0000241#define OPT_FQDN_UPDATE 36
Simon Kelleyc5ad4e72012-02-24 16:06:20 +0000242#define OPT_RA 37
Simon Kelley61ce6002012-04-20 21:28:49 +0100243#define OPT_TFTP_LC 38
Simon Kelley54dd3932012-06-20 11:23:38 +0100244#define OPT_CLEVERBIND 39
Simon Kelley8bc4cec2012-07-03 21:04:11 +0100245#define OPT_TFTP 40
Simon Kelley6bd3a092013-10-11 10:25:56 +0100246#define OPT_CLIENT_SUBNET 41
Kevin Darbyshire-Bryant8c0b73d2013-10-11 11:56:33 +0100247#define OPT_QUIET_DHCP 42
248#define OPT_QUIET_DHCP6 43
249#define OPT_QUIET_RA 44
Simon Kelley3a237152013-12-12 12:15:50 +0000250#define OPT_DNSSEC_VALID 45
Simon Kelleye98bd522014-03-28 20:41:23 +0000251#define OPT_DNSSEC_TIME 46
Simon Kelley5b3bf922014-01-25 17:03:07 +0000252#define OPT_DNSSEC_DEBUG 47
Simon Kelleya6918532018-04-15 16:20:52 +0100253#define OPT_DNSSEC_IGN_NS 48
Simon Kelleyc8a80482014-03-05 14:29:54 +0000254#define OPT_LOCAL_SERVICE 49
Simon Kelleyb5ea1cc2014-07-29 16:34:14 +0100255#define OPT_LOOP_DETECT 50
Simon Kelley25cf5e32015-01-09 15:53:03 +0000256#define OPT_EXTRALOG 51
Stefan Tomanek30d08792015-03-31 22:32:11 +0100257#define OPT_TFTP_NO_FAIL 52
Simon Kelley1e505122016-01-25 21:29:23 +0000258#define OPT_SCRIPT_ARP 53
259#define OPT_MAC_B64 54
Simon Kelley9e4cf472016-02-17 20:26:32 +0000260#define OPT_MAC_HEX 55
Floris Bos60704f52017-04-09 22:22:49 +0100261#define OPT_TFTP_APREF_MAC 56
Simon Kelley734d5312018-03-23 23:09:53 +0000262#define OPT_RAPID_COMMIT 57
Julian Kornberger8dcdb332018-07-21 22:11:08 +0100263#define OPT_UBUS 58
Florent Fourcot13a58f92019-06-20 10:26:40 +0200264#define OPT_IGNORE_CLID 59
Simon Kelley66f62652020-01-05 16:21:24 +0000265#define OPT_SINGLE_PORT 60
266#define OPT_LAST 61
Simon Kelley9e4abcb2004-01-22 19:47:41 +0000267
Petr Menšík24b87602018-10-24 22:30:18 +0100268#define OPTION_BITS (sizeof(unsigned int)*8)
269#define OPTION_SIZE ( (OPT_LAST/OPTION_BITS)+((OPT_LAST%OPTION_BITS)!=0) )
270#define option_var(x) (daemon->options[(x) / OPTION_BITS])
271#define option_val(x) ((1u) << ((x) % OPTION_BITS))
272#define option_bool(x) (option_var(x) & option_val(x))
273
Simon Kelley7622fc02009-06-04 20:32:05 +0100274/* extra flags for my_syslog, we use a couple of facilities since they are known
275 not to occupy the same bits as priorities, no matter how syslog.h is set up. */
Petr Menšíkc77fb9d2017-04-16 20:20:08 +0100276#define MS_TFTP LOG_USER
277#define MS_DHCP LOG_DAEMON
278#define MS_SCRIPT LOG_MAIL
Simon Kelley7622fc02009-06-04 20:32:05 +0100279
Simon Kelleycc921df2019-01-02 22:48:59 +0000280/* Note that this is used widely as a container for IPv4/IPv6 addresses,
281 so for that reason, was well as to avoid wasting memory in almost every
282 cache entry, the other variants should not be larger than
283 sizeof(struct in6_addr) - 16 bytes.
284*/
285union all_addr {
286 struct in_addr addr4;
287 struct in6_addr addr6;
288 struct {
289 union {
290 struct crec *cache;
Simon Kelley84449bf2019-10-29 22:24:19 +0000291 char *name;
Simon Kelleycc921df2019-01-02 22:48:59 +0000292 } target;
Simon Kelley1fd56c02019-10-30 12:58:28 +0000293 unsigned int uid;
294 int is_name_ptr; /* disciminates target union */
Simon Kelleycc921df2019-01-02 22:48:59 +0000295 } cname;
296 struct {
297 struct blockdata *keydata;
298 unsigned short keylen, flags, keytag;
299 unsigned char algo;
300 } key;
301 struct {
302 struct blockdata *keydata;
303 unsigned short keylen, keytag;
304 unsigned char algo;
305 unsigned char digest;
306 } ds;
Simon Kelley5b99eae2019-01-06 23:09:50 +0000307 struct {
308 struct blockdata *target;
309 unsigned short targetlen, srvport, priority, weight;
310 } srv;
Simon Kelleycc921df2019-01-02 22:48:59 +0000311 /* for log_query */
312 struct {
313 unsigned short keytag, algo, digest, rcode;
314 } log;
Simon Kelley9e4abcb2004-01-22 19:47:41 +0000315};
316
Simon Kelleycc921df2019-01-02 22:48:59 +0000317
Simon Kelley9e4abcb2004-01-22 19:47:41 +0000318struct bogus_addr {
319 struct in_addr addr;
320 struct bogus_addr *next;
321};
322
Simon Kelley1cff1662004-03-12 08:12:58 +0000323/* dns doctor param */
324struct doctor {
Simon Kelley73a08a22009-02-05 20:28:08 +0000325 struct in_addr in, end, out, mask;
Simon Kelley1cff1662004-03-12 08:12:58 +0000326 struct doctor *next;
327};
328
Simon Kelley0a852542005-03-23 20:28:59 +0000329struct mx_srv_record {
330 char *name, *target;
Simon Kelley3d8df262005-08-29 12:19:27 +0100331 int issrv, srvport, priority, weight;
332 unsigned int offset;
Simon Kelley0a852542005-03-23 20:28:59 +0000333 struct mx_srv_record *next;
Simon Kelleyde379512004-06-22 20:23:33 +0100334};
335
Simon Kelley1a6bca82008-07-11 11:11:42 +0100336struct naptr {
337 char *name, *replace, *regexp, *services, *flags;
338 unsigned int order, pref;
339 struct naptr *next;
340};
341
Kevin Darbyshire-Bryant7ac9ae12016-09-09 20:52:08 +0100342#ifndef NO_ID
Simon Kelleyfec216d2014-03-27 20:54:34 +0000343#define TXT_STAT_CACHESIZE 1
344#define TXT_STAT_INSERTS 2
345#define TXT_STAT_EVICTIONS 3
346#define TXT_STAT_MISSES 4
347#define TXT_STAT_HITS 5
348#define TXT_STAT_AUTH 6
349#define TXT_STAT_SERVERS 7
Kevin Darbyshire-Bryant7ac9ae12016-09-09 20:52:08 +0100350#endif
Simon Kelleyfec216d2014-03-27 20:54:34 +0000351
Simon Kelley0a852542005-03-23 20:28:59 +0000352struct txt_record {
Simon Kelley28866e92011-02-14 20:19:14 +0000353 char *name;
354 unsigned char *txt;
Simon Kelley0a852542005-03-23 20:28:59 +0000355 unsigned short class, len;
Simon Kelleyfec216d2014-03-27 20:54:34 +0000356 int stat;
Simon Kelley0a852542005-03-23 20:28:59 +0000357 struct txt_record *next;
Simon Kelleyf6b7dc42005-01-23 12:06:08 +0000358};
359
Simon Kelley832af0b2007-01-21 20:01:28 +0000360struct ptr_record {
361 char *name, *ptr;
362 struct ptr_record *next;
363};
364
Simon Kelley9009d742008-11-14 20:04:27 +0000365struct cname {
Simon Kelley903df072017-01-19 17:22:00 +0000366 int ttl, flag;
Simon Kelley9009d742008-11-14 20:04:27 +0000367 char *alias, *target;
Simon Kelley903df072017-01-19 17:22:00 +0000368 struct cname *next, *targetp;
Simon Kelley376d48c2013-11-13 13:04:30 +0000369};
370
Simon Kelleyee415862014-02-11 11:07:22 +0000371struct ds_config {
372 char *name, *digest;
373 int digestlen, class, algo, keytag, digest_type;
374 struct ds_config *next;
Simon Kelley0fc2f312014-01-08 10:26:58 +0000375};
376
Simon Kelley376d48c2013-11-13 13:04:30 +0000377#define ADDRLIST_LITERAL 1
378#define ADDRLIST_IPV6 2
Simon Kelley47669362014-12-17 12:41:56 +0000379#define ADDRLIST_REVONLY 4
Simon Kelley376d48c2013-11-13 13:04:30 +0000380
381struct addrlist {
Simon Kelleycc921df2019-01-02 22:48:59 +0000382 union all_addr addr;
Simon Kelley376d48c2013-11-13 13:04:30 +0000383 int flags, prefixlen;
384 struct addrlist *next;
Simon Kelley9009d742008-11-14 20:04:27 +0000385};
386
Simon Kelley376d48c2013-11-13 13:04:30 +0000387#define AUTH6 1
388#define AUTH4 2
389
Simon Kelley4f7b3042012-11-28 21:27:02 +0000390struct auth_zone {
391 char *domain;
Simon Kelley376d48c2013-11-13 13:04:30 +0000392 struct auth_name_list {
393 char *name;
394 int flags;
395 struct auth_name_list *next;
396 } *interface_names;
397 struct addrlist *subnet;
Mathias Kresin094bfae2016-07-24 14:15:22 +0100398 struct addrlist *exclude;
Simon Kelley4f7b3042012-11-28 21:27:02 +0000399 struct auth_zone *next;
400};
401
Simon Kelley157d8cf2019-10-25 17:46:49 +0100402#define HR_6 1
403#define HR_4 2
Simon Kelley4f7b3042012-11-28 21:27:02 +0000404
Simon Kelleye759d422012-03-16 13:18:57 +0000405struct host_record {
Simon Kelley157d8cf2019-10-25 17:46:49 +0100406 int ttl, flags;
Simon Kelleye759d422012-03-16 13:18:57 +0000407 struct name_list {
408 char *name;
409 struct name_list *next;
410 } *names;
411 struct in_addr addr;
Simon Kelleye759d422012-03-16 13:18:57 +0000412 struct in6_addr addr6;
Simon Kelleye759d422012-03-16 13:18:57 +0000413 struct host_record *next;
414};
415
Simon Kelleyf2621c72007-04-29 19:47:21 +0100416struct interface_name {
417 char *name; /* domain name */
418 char *intr; /* interface name */
Simon Kelleyf7029f52013-11-21 15:09:09 +0000419 int family; /* AF_INET, AF_INET6 or zero for both */
Simon Kelley376d48c2013-11-13 13:04:30 +0000420 struct addrlist *addr;
Simon Kelleyf2621c72007-04-29 19:47:21 +0100421 struct interface_name *next;
422};
423
Simon Kelley9e4abcb2004-01-22 19:47:41 +0000424union bigname {
425 char name[MAXDNAME];
426 union bigname *next; /* freelist */
427};
428
Simon Kelleyc3e0b9b2013-12-31 13:50:39 +0000429struct blockdata {
430 struct blockdata *next;
Simon Kelley7b4ad2e2012-04-04 14:05:35 +0100431 unsigned char key[KEYBLOCK_LEN];
432};
433
Simon Kelley9e4abcb2004-01-22 19:47:41 +0000434struct crec {
435 struct crec *next, *prev, *hash_next;
Simon Kelleycc921df2019-01-02 22:48:59 +0000436 union all_addr addr;
Simon Kelleycdbee9a2012-04-04 21:55:59 +0100437 time_t ttd; /* time to die */
Simon Kelley93be5b12015-12-15 12:04:40 +0000438 /* used as class if DNSKEY/DS, index to source for F_HOSTS */
Simon Kelley3f7483e2014-03-16 22:56:58 +0000439 unsigned int uid;
Simon Kelley5b99eae2019-01-06 23:09:50 +0000440 unsigned int flags;
Simon Kelley9e4abcb2004-01-22 19:47:41 +0000441 union {
442 char sname[SMALLDNAME];
443 union bigname *bname;
444 char *namep;
445 } name;
446};
447
Simon Kelley3a610a02018-09-26 16:50:35 +0100448#define SIZEOF_BARE_CREC (sizeof(struct crec) - SMALLDNAME)
449#define SIZEOF_POINTER_CREC (sizeof(struct crec) + sizeof(char *) - SMALLDNAME)
450
Simon Kelley28866e92011-02-14 20:19:14 +0000451#define F_IMMORTAL (1u<<0)
452#define F_NAMEP (1u<<1)
453#define F_REVERSE (1u<<2)
454#define F_FORWARD (1u<<3)
455#define F_DHCP (1u<<4)
456#define F_NEG (1u<<5)
457#define F_HOSTS (1u<<6)
458#define F_IPV4 (1u<<7)
459#define F_IPV6 (1u<<8)
460#define F_BIGNAME (1u<<9)
461#define F_NXDOMAIN (1u<<10)
462#define F_CNAME (1u<<11)
Simon Kelley7b4ad2e2012-04-04 14:05:35 +0100463#define F_DNSKEY (1u<<12)
Simon Kelley28866e92011-02-14 20:19:14 +0000464#define F_CONFIG (1u<<13)
Simon Kelley7b4ad2e2012-04-04 14:05:35 +0100465#define F_DS (1u<<14)
466#define F_DNSSECOK (1u<<15)
Simon Kelley28866e92011-02-14 20:19:14 +0000467#define F_UPSTREAM (1u<<16)
468#define F_RRNAME (1u<<17)
469#define F_SERVER (1u<<18)
470#define F_QUERY (1u<<19)
Simon Kelley7b4ad2e2012-04-04 14:05:35 +0100471#define F_NOERR (1u<<20)
Simon Kelley4f7b3042012-11-28 21:27:02 +0000472#define F_AUTH (1u<<21)
Simon Kelley0fc2f312014-01-08 10:26:58 +0000473#define F_DNSSEC (1u<<22)
474#define F_KEYTAG (1u<<23)
475#define F_SECSTAT (1u<<24)
Simon Kelley12fae492014-02-04 22:03:06 +0000476#define F_NO_RR (1u<<25)
Wang Jian49752b92014-03-28 20:52:47 +0000477#define F_IPSET (1u<<26)
Simon Kelley93be5b12015-12-15 12:04:40 +0000478#define F_NOEXTRA (1u<<27)
Simon Kelley087eb762017-10-30 23:16:54 +0000479#define F_SERVFAIL (1u<<28)
Simon Kelley07ed5852018-05-04 21:52:22 +0100480#define F_RCODE (1u<<29)
Simon Kelley5b99eae2019-01-06 23:09:50 +0000481#define F_SRV (1u<<30)
Simon Kelley4f7b3042012-11-28 21:27:02 +0000482
Simon Kelley45d8a242018-07-17 21:01:14 +0100483#define UID_NONE 0
Simon Kelley19c51cf2014-03-18 22:38:30 +0000484/* Values of uid in crecs with F_CONFIG bit set. */
Simon Kelley19c51cf2014-03-18 22:38:30 +0000485#define SRC_CONFIG 1
486#define SRC_HOSTS 2
487#define SRC_AH 3
488
Simon Kelley9e4abcb2004-01-22 19:47:41 +0000489
490/* struct sockaddr is not large enough to hold any address,
Simon Kelleycdeda282006-03-16 20:16:06 +0000491 and specifically not big enough to hold an IPv6 address.
Simon Kelley9e4abcb2004-01-22 19:47:41 +0000492 Blech. Roll our own. */
493union mysockaddr {
494 struct sockaddr sa;
495 struct sockaddr_in in;
Simon Kelley9e4abcb2004-01-22 19:47:41 +0000496 struct sockaddr_in6 in6;
Simon Kelley9e4abcb2004-01-22 19:47:41 +0000497};
498
Simon Kelleybad7b872012-12-20 22:00:39 +0000499/* bits in flag param to IPv6 callbacks from iface_enumerate() */
500#define IFACE_TENTATIVE 1
501#define IFACE_DEPRECATED 2
Vladislav Grishenko4568a6f2013-08-19 16:07:07 +0100502#define IFACE_PERMANENT 4
Simon Kelleybad7b872012-12-20 22:00:39 +0000503
504
Simon Kelley0a852542005-03-23 20:28:59 +0000505#define SERV_FROM_RESOLV 1 /* 1 for servers from resolv, 0 for command line. */
506#define SERV_NO_ADDR 2 /* no server, this domain is local only */
507#define SERV_LITERAL_ADDRESS 4 /* addr is the answer, not the server */
Simon Kelley5aabfc72007-08-29 11:24:47 +0100508#define SERV_HAS_DOMAIN 8 /* server for one domain only */
509#define SERV_HAS_SOURCE 16 /* source address defined */
Simon Kelley0a852542005-03-23 20:28:59 +0000510#define SERV_FOR_NODOTS 32 /* server for names with no domain part only */
511#define SERV_WARNED_RECURSIVE 64 /* avoid warning spam */
Simon Kelley3d8df262005-08-29 12:19:27 +0100512#define SERV_FROM_DBUS 128 /* 1 if source is DBus */
513#define SERV_MARK 256 /* for mark-and-delete */
Simon Kelley9e4abcb2004-01-22 19:47:41 +0000514#define SERV_TYPE (SERV_HAS_DOMAIN | SERV_FOR_NODOTS)
Simon Kelley824af852008-02-12 20:43:05 +0000515#define SERV_COUNTED 512 /* workspace for log code */
Simon Kelley8ef5ada2010-06-03 19:42:45 +0100516#define SERV_USE_RESOLV 1024 /* forward this domain in the normal way */
517#define SERV_NO_REBIND 2048 /* inhibit dns-rebind protection */
Simon Kelley7b1eae42014-02-20 13:43:28 +0000518#define SERV_FROM_FILE 4096 /* read from --servers-file */
Simon Kelleyb5ea1cc2014-07-29 16:34:14 +0100519#define SERV_LOOP 8192 /* server causes forwarding loop */
Simon Kelley367341f2016-01-12 15:58:23 +0000520#define SERV_DO_DNSSEC 16384 /* Validate DNSSEC when using this server */
Simon Kelley361dfe52017-02-10 21:12:30 +0000521#define SERV_GOT_TCP 32768 /* Got some data from the TCP connection */
Simon Kelley9e4abcb2004-01-22 19:47:41 +0000522
523struct serverfd {
524 int fd;
525 union mysockaddr source_addr;
Simon Kelley824af852008-02-12 20:43:05 +0000526 char interface[IF_NAMESIZE+1];
Simon Kelley4441cf72018-04-10 21:39:54 +0100527 unsigned int ifindex, used, preallocated;
Simon Kelley9e4abcb2004-01-22 19:47:41 +0000528 struct serverfd *next;
529};
530
Simon Kelley1a6bca82008-07-11 11:11:42 +0100531struct randfd {
532 int fd;
533 unsigned short refcount, family;
534};
535
Simon Kelley9e4abcb2004-01-22 19:47:41 +0000536struct server {
537 union mysockaddr addr, source_addr;
Simon Kelley824af852008-02-12 20:43:05 +0000538 char interface[IF_NAMESIZE+1];
Simon Kelley16972692006-10-16 20:04:18 +0100539 struct serverfd *sfd;
Simon Kelley9e4abcb2004-01-22 19:47:41 +0000540 char *domain; /* set if this server only handles a domain. */
Simon Kelleya77cec82015-05-08 16:25:38 +0100541 int flags, tcpfd, edns_pktsz;
Simon Kelleyc1a4e252018-01-19 22:00:05 +0000542 time_t pktsz_reduced;
Simon Kelley824af852008-02-12 20:43:05 +0000543 unsigned int queries, failed_queries;
Simon Kelleyb5ea1cc2014-07-29 16:34:14 +0100544#ifdef HAVE_LOOP
545 u32 uid;
546#endif
Simon Kelley9e4abcb2004-01-22 19:47:41 +0000547 struct server *next;
548};
549
Jason A. Donenfeld13d86c72013-02-22 18:20:53 +0000550struct ipsets {
551 char **sets;
552 char *domain;
553 struct ipsets *next;
554};
555
Simon Kelley9e4abcb2004-01-22 19:47:41 +0000556struct irec {
557 union mysockaddr addr;
Simon Kelleyf6b7dc42005-01-23 12:06:08 +0000558 struct in_addr netmask; /* only valid for IPv4 */
Petr Menšíkad59f272017-03-17 17:22:19 +0000559 int tftp_ok, dhcp_ok, mtu, done, warned, dad, dns_auth, index, multicast_done, found, label;
Simon Kelley5d162f22012-12-20 14:55:46 +0000560 char *name;
Simon Kelley9e4abcb2004-01-22 19:47:41 +0000561 struct irec *next;
562};
563
Simon Kelley44a2a312004-03-10 20:04:35 +0000564struct listener {
Simon Kelley832af0b2007-01-21 20:01:28 +0000565 int fd, tcpfd, tftpfd, family;
Simon Kelley52d4abf2012-03-21 21:39:48 +0000566 struct irec *iface; /* only sometimes valid for non-wildcard */
Simon Kelley44a2a312004-03-10 20:04:35 +0000567 struct listener *next;
568};
569
Simon Kelley9e4abcb2004-01-22 19:47:41 +0000570/* interface and address parms from command line. */
571struct iname {
572 char *name;
573 union mysockaddr addr;
Simon Kelley4ce4f372012-06-14 11:50:45 +0100574 int used;
Simon Kelley9e4abcb2004-01-22 19:47:41 +0000575 struct iname *next;
576};
577
Ed Bardsleya7369be2015-08-05 21:17:18 +0100578/* subnet parameters from command line */
579struct mysubnet {
580 union mysockaddr addr;
581 int addr_used;
582 int mask;
583};
584
Simon Kelley9e4abcb2004-01-22 19:47:41 +0000585/* resolv-file parms from command-line */
586struct resolvc {
587 struct resolvc *next;
Simon Kelley3d8df262005-08-29 12:19:27 +0100588 int is_default, logged;
589 time_t mtime;
Simon Kelley9e4abcb2004-01-22 19:47:41 +0000590 char *name;
Simon Kelley04918052015-01-26 11:23:43 +0000591#ifdef HAVE_INOTIFY
Simon Kelley193de4a2014-12-10 17:32:16 +0000592 int wd; /* inotify watch descriptor */
593 char *file; /* pointer to file part if path */
594#endif
Simon Kelley9e4abcb2004-01-22 19:47:41 +0000595};
596
Simon Kelley5f4dc5c2015-01-20 20:51:02 +0000597/* adn-hosts parms from command-line (also dhcp-hostsfile and dhcp-optsfile and dhcp-hostsdir*/
Simon Kelley7622fc02009-06-04 20:32:05 +0100598#define AH_DIR 1
599#define AH_INACTIVE 2
Simon Kelley5f4dc5c2015-01-20 20:51:02 +0000600#define AH_WD_DONE 4
Simon Kelley70d18732015-01-31 19:59:29 +0000601#define AH_HOSTS 8
602#define AH_DHCP_HST 16
603#define AH_DHCP_OPT 32
Simon Kelleyfd9fa482004-10-21 20:24:00 +0100604struct hostsfile {
605 struct hostsfile *next;
Simon Kelley7622fc02009-06-04 20:32:05 +0100606 int flags;
Simon Kelleyfd9fa482004-10-21 20:24:00 +0100607 char *fname;
Simon Kelley04918052015-01-26 11:23:43 +0000608#ifdef HAVE_INOTIFY
Simon Kelley5f4dc5c2015-01-20 20:51:02 +0000609 int wd; /* inotify watch descriptor */
610#endif
Simon Kelley19c51cf2014-03-18 22:38:30 +0000611 unsigned int index; /* matches to cache entries for logging */
Simon Kelleyfd9fa482004-10-21 20:24:00 +0100612};
613
Simon Kelley6b173352018-05-08 18:32:14 +0100614/* packet-dump flags */
615#define DUMP_QUERY 0x0001
616#define DUMP_REPLY 0x0002
617#define DUMP_UP_QUERY 0x0004
618#define DUMP_UP_REPLY 0x0008
619#define DUMP_SEC_QUERY 0x0010
620#define DUMP_SEC_REPLY 0x0020
621#define DUMP_BOGUS 0x0040
622#define DUMP_SEC_BOGUS 0x0080
623
Simon Kelley3a237152013-12-12 12:15:50 +0000624
625/* DNSSEC status values. */
626#define STAT_SECURE 1
627#define STAT_INSECURE 2
628#define STAT_BOGUS 3
629#define STAT_NEED_DS 4
630#define STAT_NEED_KEY 5
Simon Kelley5d3b87a2014-01-20 11:57:23 +0000631#define STAT_TRUNCATED 6
Simon Kelley5107ace2014-02-23 10:48:32 +0000632#define STAT_SECURE_WILDCARD 7
Simon Kelley9a31b682015-12-15 10:20:39 +0000633#define STAT_OK 8
634#define STAT_ABANDONED 9
Simon Kelley3a237152013-12-12 12:15:50 +0000635
Simon Kelley28866e92011-02-14 20:19:14 +0000636#define FREC_NOREBIND 1
637#define FREC_CHECKING_DISABLED 2
Simon Kelleyed4c0762013-10-08 20:46:34 +0100638#define FREC_HAS_SUBNET 4
Simon Kelley9d633042013-12-13 15:36:55 +0000639#define FREC_DNSKEY_QUERY 8
640#define FREC_DS_QUERY 16
Simon Kelley83349b82014-02-10 21:02:01 +0000641#define FREC_AD_QUESTION 32
Simon Kelley613ad152014-02-25 23:02:28 +0000642#define FREC_DO_QUESTION 64
643#define FREC_ADDED_PHEADER 128
Simon Kelley9a31b682015-12-15 10:20:39 +0000644#define FREC_TEST_PKTSZ 256
Simon Kelleyd3a8b392015-12-23 12:27:37 +0000645#define FREC_HAS_EXTRADATA 512
Simon Kelley28866e92011-02-14 20:19:14 +0000646
Simon Kelley8a9be9e2014-01-25 23:17:21 +0000647#ifdef HAVE_DNSSEC
648#define HASH_SIZE 20 /* SHA-1 digest size */
649#else
650#define HASH_SIZE sizeof(int)
651#endif
652
Simon Kelley9e4abcb2004-01-22 19:47:41 +0000653struct frec {
654 union mysockaddr source;
Simon Kelleycc921df2019-01-02 22:48:59 +0000655 union all_addr dest;
Simon Kelley832af0b2007-01-21 20:01:28 +0000656 struct server *sentto; /* NULL means free */
Simon Kelley1a6bca82008-07-11 11:11:42 +0100657 struct randfd *rfd4;
Simon Kelley1a6bca82008-07-11 11:11:42 +0100658 struct randfd *rfd6;
Simon Kelleydfa666f2004-08-02 18:27:27 +0100659 unsigned int iface;
Simon Kelley9e4abcb2004-01-22 19:47:41 +0000660 unsigned short orig_id, new_id;
Simon Kelley25cf5e32015-01-09 15:53:03 +0000661 int log_id, fd, forwardall, flags;
Simon Kelley9e4abcb2004-01-22 19:47:41 +0000662 time_t time;
Simon Kelley8a9be9e2014-01-25 23:17:21 +0000663 unsigned char *hash[HASH_SIZE];
664#ifdef HAVE_DNSSEC
Simon Kelley7fa836e2014-02-10 20:11:24 +0000665 int class, work_counter;
Simon Kelley3a237152013-12-12 12:15:50 +0000666 struct blockdata *stash; /* Saved reply, whilst we validate */
Simon Kelley9a31b682015-12-15 10:20:39 +0000667 size_t stash_len;
Simon Kelley3a237152013-12-12 12:15:50 +0000668 struct frec *dependent; /* Query awaiting internally-generated DNSKEY or DS query */
669 struct frec *blocking_query; /* Query which is blocking us. */
670#endif
Simon Kelley9e4abcb2004-01-22 19:47:41 +0000671 struct frec *next;
672};
673
Simon Kelley40ef23b2012-03-13 21:59:28 +0000674/* flags in top of length field for DHCP-option tables */
675#define OT_ADDR_LIST 0x8000
676#define OT_RFC1035_NAME 0x4000
677#define OT_INTERNAL 0x2000
678#define OT_NAME 0x1000
679#define OT_CSTRING 0x0800
680#define OT_DEC 0x0400
Simon Kelley23245c02012-07-18 16:21:11 +0100681#define OT_TIME 0x0200
Simon Kelley40ef23b2012-03-13 21:59:28 +0000682
Simon Kelley16972692006-10-16 20:04:18 +0100683/* actions in the daemon->helper RPC */
684#define ACTION_DEL 1
685#define ACTION_OLD_HOSTNAME 2
686#define ACTION_OLD 3
687#define ACTION_ADD 4
Simon Kelleya9530962012-03-20 22:07:35 +0000688#define ACTION_TFTP 5
Simon Kelley33702ab2015-12-28 23:17:15 +0000689#define ACTION_ARP 6
Simon Kelleye6e751b2016-02-01 17:59:07 +0000690#define ACTION_ARP_DEL 7
Simon Kelley16972692006-10-16 20:04:18 +0100691
Simon Kelley4cb1b322012-02-06 14:30:41 +0000692#define LEASE_NEW 1 /* newly created */
693#define LEASE_CHANGED 2 /* modified */
694#define LEASE_AUX_CHANGED 4 /* CLID or expiry changed */
695#define LEASE_AUTH_NAME 8 /* hostname came from config, not from client */
696#define LEASE_USED 16 /* used this DHCPv6 transaction */
697#define LEASE_NA 32 /* IPv6 no-temporary lease */
698#define LEASE_TA 64 /* IPv6 temporary lease */
Simon Kelley353ae4d2012-03-19 20:07:51 +0000699#define LEASE_HAVE_HWADDR 128 /* Have set hwaddress */
Simon Kelley4cb1b322012-02-06 14:30:41 +0000700
Simon Kelley9e4abcb2004-01-22 19:47:41 +0000701struct dhcp_lease {
702 int clid_len; /* length of client identifier */
703 unsigned char *clid; /* clientid */
704 char *hostname, *fqdn; /* name from client-hostname option or config */
Simon Kelley16972692006-10-16 20:04:18 +0100705 char *old_hostname; /* hostname before it moved to another lease */
Simon Kelley4cb1b322012-02-06 14:30:41 +0000706 int flags;
Simon Kelley9e4abcb2004-01-22 19:47:41 +0000707 time_t expires; /* lease expiry */
Simon Kelley5e9e0ef2006-04-17 14:24:29 +0100708#ifdef HAVE_BROKEN_RTC
709 unsigned int length;
710#endif
Simon Kelley89500e32013-09-20 16:29:20 +0100711 int hwaddr_len, hwaddr_type;
712 unsigned char hwaddr[DHCP_CHADDR_MAX];
Simon Kelley1f15b812009-10-13 17:49:32 +0100713 struct in_addr addr, override, giaddr;
Simon Kelley316e2732010-01-22 20:16:09 +0000714 unsigned char *extradata;
715 unsigned int extradata_len, extradata_size;
Simon Kelley824af852008-02-12 20:43:05 +0000716 int last_interface;
Lung-Pin Changdc8a1b12014-07-02 10:48:05 +0800717 int new_interface; /* save possible originated interface */
718 int new_prefixlen; /* and its prefix length */
Simon Kelley353ae4d2012-03-19 20:07:51 +0000719#ifdef HAVE_DHCP6
Simon Kelley89500e32013-09-20 16:29:20 +0100720 struct in6_addr addr6;
Dominik DL6ER456a3192019-10-20 18:51:52 +0200721 unsigned int iaid;
Simon Kelley353ae4d2012-03-19 20:07:51 +0000722 struct slaac_address {
Simon Kelley875b8162013-12-17 17:40:32 +0000723 struct in6_addr addr;
Simon Kelley353ae4d2012-03-19 20:07:51 +0000724 time_t ping_time;
725 int backoff; /* zero -> confirmed */
726 struct slaac_address *next;
727 } *slaac_address;
Simon Kelley6f9aaa92013-04-10 10:25:26 +0100728 int vendorclass_count;
Simon Kelley353ae4d2012-03-19 20:07:51 +0000729#endif
Simon Kelley9e4abcb2004-01-22 19:47:41 +0000730 struct dhcp_lease *next;
731};
732
Simon Kelleya2226412004-05-13 20:27:08 +0100733struct dhcp_netid {
734 char *net;
735 struct dhcp_netid *next;
736};
737
Simon Kelley26128d22004-11-14 16:43:54 +0000738struct dhcp_netid_list {
739 struct dhcp_netid *list;
740 struct dhcp_netid_list *next;
741};
Simon Kelley16972692006-10-16 20:04:18 +0100742
Simon Kelley8ef5ada2010-06-03 19:42:45 +0100743struct tag_if {
744 struct dhcp_netid_list *set;
745 struct dhcp_netid *tag;
746 struct tag_if *next;
747};
748
Floris Bos503c6092017-04-09 23:07:13 +0100749struct delay_config {
750 int delay;
751 struct dhcp_netid *netid;
752 struct delay_config *next;
753};
754
Simon Kelley9009d742008-11-14 20:04:27 +0000755struct hwaddr_config {
756 int hwaddr_len, hwaddr_type;
757 unsigned char hwaddr[DHCP_CHADDR_MAX];
758 unsigned int wildcard_mask;
759 struct hwaddr_config *next;
760};
761
Simon Kelley9e4abcb2004-01-22 19:47:41 +0000762struct dhcp_config {
Simon Kelley33820b72004-04-03 21:10:00 +0100763 unsigned int flags;
Simon Kelley9e4abcb2004-01-22 19:47:41 +0000764 int clid_len; /* length of client identifier */
765 unsigned char *clid; /* clientid */
Simon Kelley9009d742008-11-14 20:04:27 +0000766 char *hostname, *domain;
Simon Kelley8ef5ada2010-06-03 19:42:45 +0100767 struct dhcp_netid_list *netid;
Simon Kelley52b92f42012-01-22 16:05:15 +0000768#ifdef HAVE_DHCP6
769 struct in6_addr addr6;
770#endif
Simon Kelley9e4abcb2004-01-22 19:47:41 +0000771 struct in_addr addr;
Simon Kelley849a8352006-06-09 21:02:31 +0100772 time_t decline_time;
Simon Kelley9009d742008-11-14 20:04:27 +0000773 unsigned int lease_time;
774 struct hwaddr_config *hwaddr;
Simon Kelley9e4abcb2004-01-22 19:47:41 +0000775 struct dhcp_config *next;
776};
777
Simon Kelley4cb1b322012-02-06 14:30:41 +0000778#define have_config(config, mask) ((config) && ((config)->flags & (mask)))
779
Simon Kelley0a852542005-03-23 20:28:59 +0000780#define CONFIG_DISABLE 1
781#define CONFIG_CLID 2
Simon Kelley0a852542005-03-23 20:28:59 +0000782#define CONFIG_TIME 8
783#define CONFIG_NAME 16
784#define CONFIG_ADDR 32
Simon Kelley0a852542005-03-23 20:28:59 +0000785#define CONFIG_NOCLID 128
Simon Kelley849a8352006-06-09 21:02:31 +0100786#define CONFIG_FROM_ETHERS 256 /* entry created by /etc/ethers */
787#define CONFIG_ADDR_HOSTS 512 /* address added by from /etc/hosts */
788#define CONFIG_DECLINED 1024 /* address declined by client */
Simon Kelley5aabfc72007-08-29 11:24:47 +0100789#define CONFIG_BANK 2048 /* from dhcp hosts file */
Simon Kelley52b92f42012-01-22 16:05:15 +0000790#define CONFIG_ADDR6 4096
Simon Kelley30393102013-01-17 16:34:16 +0000791#define CONFIG_WILDCARD 8192
Steven Siloti18eac672019-01-13 22:56:36 +0000792#define CONFIG_ADDR6_HOSTS 16384 /* address added by from /etc/hosts */
Simon Kelley33820b72004-04-03 21:10:00 +0100793
Simon Kelley9e4abcb2004-01-22 19:47:41 +0000794struct dhcp_opt {
Simon Kelleycdeda282006-03-16 20:16:06 +0000795 int opt, len, flags;
Simon Kelley73a08a22009-02-05 20:28:08 +0000796 union {
797 int encap;
798 unsigned int wildcard_mask;
799 unsigned char *vendor_class;
800 } u;
801 unsigned char *val;
Simon Kelley26128d22004-11-14 16:43:54 +0000802 struct dhcp_netid *netid;
Simon Kelley9e4abcb2004-01-22 19:47:41 +0000803 struct dhcp_opt *next;
Simon Kelleya84fa1d2004-04-23 22:21:21 +0100804};
805
Simon Kelleycdeda282006-03-16 20:16:06 +0000806#define DHOPT_ADDR 1
807#define DHOPT_STRING 2
Simon Kelley6b010842007-02-12 20:32:07 +0000808#define DHOPT_ENCAPSULATE 4
Simon Kelley73a08a22009-02-05 20:28:08 +0000809#define DHOPT_ENCAP_MATCH 8
Simon Kelley6b010842007-02-12 20:32:07 +0000810#define DHOPT_FORCE 16
Simon Kelley824af852008-02-12 20:43:05 +0000811#define DHOPT_BANK 32
Simon Kelley73a08a22009-02-05 20:28:08 +0000812#define DHOPT_ENCAP_DONE 64
813#define DHOPT_MATCH 128
814#define DHOPT_VENDOR 256
815#define DHOPT_HEX 512
Simon Kelley7622fc02009-06-04 20:32:05 +0100816#define DHOPT_VENDOR_MATCH 1024
Simon Kelley316e2732010-01-22 20:16:09 +0000817#define DHOPT_RFC3925 2048
Simon Kelley7de060b2011-08-26 17:24:52 +0100818#define DHOPT_TAGOK 4096
Simon Kelley4cb1b322012-02-06 14:30:41 +0000819#define DHOPT_ADDR6 8192
Simon Kelleycdeda282006-03-16 20:16:06 +0000820
Simon Kelley26128d22004-11-14 16:43:54 +0000821struct dhcp_boot {
Simon Kelley7de060b2011-08-26 17:24:52 +0100822 char *file, *sname, *tftp_sname;
Simon Kelley26128d22004-11-14 16:43:54 +0000823 struct in_addr next_server;
824 struct dhcp_netid *netid;
825 struct dhcp_boot *next;
826};
827
Simon Kelleyc8226202018-08-08 23:46:03 +0100828struct dhcp_match_name {
829 char *name;
830 int wildcard;
831 struct dhcp_netid *netid;
832 struct dhcp_match_name *next;
833};
834
Simon Kelley7622fc02009-06-04 20:32:05 +0100835struct pxe_service {
836 unsigned short CSA, type;
Simon Kelley751d6f42012-02-10 15:24:51 +0000837 char *menu, *basename, *sname;
Simon Kelley7622fc02009-06-04 20:32:05 +0100838 struct in_addr server;
839 struct dhcp_netid *netid;
840 struct pxe_service *next;
841};
842
Simon Kelleyf2621c72007-04-29 19:47:21 +0100843#define MATCH_VENDOR 1
844#define MATCH_USER 2
845#define MATCH_CIRCUIT 3
846#define MATCH_REMOTE 4
847#define MATCH_SUBSCRIBER 5
848
Josh Soref730c6742017-02-06 16:14:04 +0000849/* vendorclass, userclass, remote-id or circuit-id */
Simon Kelleya84fa1d2004-04-23 22:21:21 +0100850struct dhcp_vendor {
Simon Kelleya5c72ab2012-02-10 13:42:47 +0000851 int len, match_type;
852 unsigned int enterprise;
Simon Kelleya2226412004-05-13 20:27:08 +0100853 char *data;
854 struct dhcp_netid netid;
Simon Kelleya84fa1d2004-04-23 22:21:21 +0100855 struct dhcp_vendor *next;
856};
Simon Kelley9e4abcb2004-01-22 19:47:41 +0000857
Simon Kelleycdeda282006-03-16 20:16:06 +0000858struct dhcp_mac {
859 unsigned int mask;
860 int hwaddr_len, hwaddr_type;
861 unsigned char hwaddr[DHCP_CHADDR_MAX];
862 struct dhcp_netid netid;
863 struct dhcp_mac *next;
864};
865
Simon Kelley832af0b2007-01-21 20:01:28 +0000866struct dhcp_bridge {
867 char iface[IF_NAMESIZE];
868 struct dhcp_bridge *alias, *next;
869};
Simon Kelley832af0b2007-01-21 20:01:28 +0000870
Simon Kelley9009d742008-11-14 20:04:27 +0000871struct cond_domain {
Simon Kelley48fd1c42013-04-25 09:49:38 +0100872 char *domain, *prefix;
Simon Kelley9009d742008-11-14 20:04:27 +0000873 struct in_addr start, end;
Simon Kelleyd74942a2012-02-07 20:51:56 +0000874 struct in6_addr start6, end6;
Simon Kelley6b2b5642018-03-10 18:12:04 +0000875 int is6, indexed;
Simon Kelley9009d742008-11-14 20:04:27 +0000876 struct cond_domain *next;
Simon Kelley1f776932012-12-16 19:46:08 +0000877};
Simon Kelley9009d742008-11-14 20:04:27 +0000878
Simon Kelleya6ebfac2013-03-06 20:52:35 +0000879#ifdef OPTION6_PREFIX_CLASS
880struct prefix_class {
881 int class;
Simon Kelleyc6309242013-03-07 20:59:28 +0000882 struct dhcp_netid tag;
Simon Kelleya6ebfac2013-03-06 20:52:35 +0000883 struct prefix_class *next;
884};
885#endif
886
Simon Kelleyc4cd95d2013-10-10 20:58:11 +0100887struct ra_interface {
888 char *name;
Vladislav Grishenko6ec5f5c2017-04-24 22:34:45 +0100889 char *mtu_name;
David Flamand005c46d2017-04-11 11:49:54 +0100890 int interval, lifetime, prio, mtu;
Simon Kelleyc4cd95d2013-10-10 20:58:11 +0100891 struct ra_interface *next;
892};
893
Simon Kelley9e4abcb2004-01-22 19:47:41 +0000894struct dhcp_context {
Simon Kelleyfeba5c12004-07-27 20:28:58 +0100895 unsigned int lease_time, addr_epoch;
Simon Kelley0a852542005-03-23 20:28:59 +0000896 struct in_addr netmask, broadcast;
897 struct in_addr local, router;
Simon Kelleya84fa1d2004-04-23 22:21:21 +0100898 struct in_addr start, end; /* range of available addresses */
Simon Kelleyc72daea2012-01-05 21:33:27 +0000899#ifdef HAVE_DHCP6
900 struct in6_addr start6, end6; /* range of available addresses */
Simon Kelleye44ddca2012-02-18 17:08:50 +0000901 struct in6_addr local6;
Simon Kelley353ae4d2012-03-19 20:07:51 +0000902 int prefix, if_index;
Simon Kelleyef1a94a2013-07-26 13:59:03 +0100903 unsigned int valid, preferred, saved_valid;
904 time_t ra_time, ra_short_period_start, address_lost_time;
Simon Kelley1f776932012-12-16 19:46:08 +0000905 char *template_interface;
Simon Kelleyc72daea2012-01-05 21:33:27 +0000906#endif
Simon Kelley0a852542005-03-23 20:28:59 +0000907 int flags;
Simon Kelleycdeda282006-03-16 20:16:06 +0000908 struct dhcp_netid netid, *filter;
Simon Kelley36717ee2004-09-20 19:20:58 +0100909 struct dhcp_context *next, *current;
Simon Kelley9e4abcb2004-01-22 19:47:41 +0000910};
911
Simon Kelleyae5b7e02019-03-27 22:33:28 +0000912struct shared_network {
913 int if_index;
914 struct in_addr match_addr, shared_addr;
915#ifdef HAVE_DHCP6
916 /* shared_addr == 0 for IP6 entries. */
917 struct in6_addr match_addr6, shared_addr6;
918#endif
919 struct shared_network *next;
920};
921
Simon Kelley89500e32013-09-20 16:29:20 +0100922#define CONTEXT_STATIC (1u<<0)
923#define CONTEXT_NETMASK (1u<<1)
924#define CONTEXT_BRDCAST (1u<<2)
925#define CONTEXT_PROXY (1u<<3)
Simon Kelley7ea3d3f2014-04-25 22:04:05 +0100926#define CONTEXT_RA_ROUTER (1u<<4)
Simon Kelley89500e32013-09-20 16:29:20 +0100927#define CONTEXT_RA_DONE (1u<<5)
928#define CONTEXT_RA_NAME (1u<<6)
929#define CONTEXT_RA_STATELESS (1u<<7)
930#define CONTEXT_DHCP (1u<<8)
931#define CONTEXT_DEPRECATE (1u<<9)
932#define CONTEXT_TEMPLATE (1u<<10) /* create contexts using addresses */
933#define CONTEXT_CONSTRUCTED (1u<<11)
934#define CONTEXT_GC (1u<<12)
935#define CONTEXT_RA (1u<<13)
936#define CONTEXT_CONF_USED (1u<<14)
937#define CONTEXT_USED (1u<<15)
Simon Kelley376d48c2013-11-13 13:04:30 +0000938#define CONTEXT_OLD (1u<<16)
939#define CONTEXT_V6 (1u<<17)
Neil Jerram2fd5bc92015-06-10 22:13:06 +0100940#define CONTEXT_RA_OFF_LINK (1u<<18)
Simon Kelleyef1a94a2013-07-26 13:59:03 +0100941
Simon Kelley3d8df262005-08-29 12:19:27 +0100942struct ping_result {
943 struct in_addr addr;
944 time_t time;
Simon Kelley7de060b2011-08-26 17:24:52 +0100945 unsigned int hash;
Simon Kelley3d8df262005-08-29 12:19:27 +0100946 struct ping_result *next;
947};
Simon Kelley9e4abcb2004-01-22 19:47:41 +0000948
Simon Kelley832af0b2007-01-21 20:01:28 +0000949struct tftp_file {
950 int refcount, fd;
951 off_t size;
Simon Kelley5aabfc72007-08-29 11:24:47 +0100952 dev_t dev;
953 ino_t inode;
Simon Kelley832af0b2007-01-21 20:01:28 +0000954 char filename[];
955};
956
957struct tftp_transfer {
958 int sockfd;
959 time_t timeout;
960 int backoff;
Simon Kelley9e038942008-05-30 20:06:34 +0100961 unsigned int block, blocksize, expansion;
962 off_t offset;
Simon Kelley28866e92011-02-14 20:19:14 +0000963 union mysockaddr peer;
Simon Kelley66f62652020-01-05 16:21:24 +0000964 union all_addr source;
965 int if_index;
Simon Kelley9e038942008-05-30 20:06:34 +0100966 char opt_blocksize, opt_transize, netascii, carrylf;
Simon Kelley832af0b2007-01-21 20:01:28 +0000967 struct tftp_file *file;
968 struct tftp_transfer *next;
969};
970
Simon Kelley8ef5ada2010-06-03 19:42:45 +0100971struct addr_list {
972 struct in_addr addr;
973 struct addr_list *next;
974};
975
Simon Kelley8ef5ada2010-06-03 19:42:45 +0100976struct tftp_prefix {
977 char *interface;
978 char *prefix;
Stefan Tomanek30d08792015-03-31 22:32:11 +0100979 int missing;
Simon Kelley8ef5ada2010-06-03 19:42:45 +0100980 struct tftp_prefix *next;
981};
982
Simon Kelleyff7eea22013-09-04 18:01:38 +0100983struct dhcp_relay {
Simon Kelleycc921df2019-01-02 22:48:59 +0000984 union all_addr local, server;
Simon Kelleyff7eea22013-09-04 18:01:38 +0100985 char *interface; /* Allowable interface for replies from server, and dest for IPv6 multicast */
986 int iface_index; /* working - interface in which requests arrived, for return */
987 struct dhcp_relay *current, *next;
988};
Simon Kelley8ef5ada2010-06-03 19:42:45 +0100989
Simon Kelley5aabfc72007-08-29 11:24:47 +0100990extern struct daemon {
Simon Kelley3be34542004-09-11 19:12:13 +0100991 /* datastuctures representing the command-line and
992 config file arguments. All set (including defaults)
993 in option.c */
994
Petr Menšík24b87602018-10-24 22:30:18 +0100995 unsigned int options[OPTION_SIZE];
Simon Kelley3be34542004-09-11 19:12:13 +0100996 struct resolvc default_resolv, *resolv_files;
Simon Kelley9009d742008-11-14 20:04:27 +0000997 time_t last_resolv;
Simon Kelley7b1eae42014-02-20 13:43:28 +0000998 char *servers_file;
Simon Kelley0a852542005-03-23 20:28:59 +0000999 struct mx_srv_record *mxnames;
Simon Kelley1a6bca82008-07-11 11:11:42 +01001000 struct naptr *naptr;
Simon Kelley9f7f3b12012-05-28 21:39:57 +01001001 struct txt_record *txt, *rr;
Simon Kelley832af0b2007-01-21 20:01:28 +00001002 struct ptr_record *ptr;
Simon Kelleye759d422012-03-16 13:18:57 +00001003 struct host_record *host_records, *host_records_tail;
Simon Kelley9009d742008-11-14 20:04:27 +00001004 struct cname *cnames;
Simon Kelley4f7b3042012-11-28 21:27:02 +00001005 struct auth_zone *auth_zones;
Simon Kelleyf2621c72007-04-29 19:47:21 +01001006 struct interface_name *int_names;
Simon Kelley3be34542004-09-11 19:12:13 +01001007 char *mxtarget;
Ed Bardsleya7369be2015-08-05 21:17:18 +01001008 struct mysubnet *add_subnet4;
1009 struct mysubnet *add_subnet6;
1010 char *lease_file;
Simon Kelley9e038942008-05-30 20:06:34 +01001011 char *username, *groupname, *scriptuser;
Simon Kelleyc72daea2012-01-05 21:33:27 +00001012 char *luascript;
Simon Kelley429798f2012-12-10 20:45:53 +00001013 char *authserver, *hostmaster;
1014 struct iname *authinterface;
Simon Kelleye1ff4192012-12-09 17:08:47 +00001015 struct name_list *secondary_forward_server;
Simon Kelley1a6bca82008-07-11 11:11:42 +01001016 int group_set, osport;
Simon Kelley3be34542004-09-11 19:12:13 +01001017 char *domain_suffix;
Simon Kelley2bb73af2013-04-24 17:38:19 +01001018 struct cond_domain *cond_domain, *synth_domains;
Simon Kelley3be34542004-09-11 19:12:13 +01001019 char *runfile;
Simon Kelley7cebd202006-05-06 14:13:33 +01001020 char *lease_change_command;
Simon Kelley2937f8a2013-07-29 19:49:07 +01001021 struct iname *if_names, *if_addrs, *if_except, *dhcp_except, *auth_peers, *tftp_interfaces;
Glen Huang32fc6db2014-12-27 15:28:12 +00001022 struct bogus_addr *bogus_addr, *ignore_addr;
Simon Kelley3be34542004-09-11 19:12:13 +01001023 struct server *servers;
Jason A. Donenfeld13d86c72013-02-22 18:20:53 +00001024 struct ipsets *ipsets;
Simon Kelley849a8352006-06-09 21:02:31 +01001025 int log_fac; /* log facility */
Simon Kelleyf2621c72007-04-29 19:47:21 +01001026 char *log_file; /* optional log file */
1027 int max_logs; /* queue limit */
Simon Kelley208b65c2006-08-05 21:41:37 +01001028 int cachesize, ftabsize;
Hans Dedecker926332a2016-01-23 10:48:12 +00001029 int port, query_port, min_port, max_port;
Simon Kelley832e47b2016-02-24 21:24:45 +00001030 unsigned long local_ttl, neg_ttl, max_ttl, min_cache_ttl, max_cache_ttl, auth_ttl, dhcp_ttl, use_dhcp_ttl;
Simon Kelley33702ab2015-12-28 23:17:15 +00001031 char *dns_client_id;
Simon Kelleyfd9fa482004-10-21 20:24:00 +01001032 struct hostsfile *addn_hosts;
Simon Kelley1f776932012-12-16 19:46:08 +00001033 struct dhcp_context *dhcp, *dhcp6;
Simon Kelleyc4cd95d2013-10-10 20:58:11 +01001034 struct ra_interface *ra_interfaces;
Simon Kelley3be34542004-09-11 19:12:13 +01001035 struct dhcp_config *dhcp_conf;
Simon Kelley3634c542012-02-08 14:22:37 +00001036 struct dhcp_opt *dhcp_opts, *dhcp_match, *dhcp_opts6, *dhcp_match6;
Simon Kelleyc8226202018-08-08 23:46:03 +01001037 struct dhcp_match_name *dhcp_name_match;
Simon Kelley3be34542004-09-11 19:12:13 +01001038 struct dhcp_vendor *dhcp_vendors;
Simon Kelleycdeda282006-03-16 20:16:06 +00001039 struct dhcp_mac *dhcp_macs;
Simon Kelley26128d22004-11-14 16:43:54 +00001040 struct dhcp_boot *boot_config;
Simon Kelley7622fc02009-06-04 20:32:05 +01001041 struct pxe_service *pxe_services;
Simon Kelley8ef5ada2010-06-03 19:42:45 +01001042 struct tag_if *tag_if;
1043 struct addr_list *override_relays;
Simon Kelleyff7eea22013-09-04 18:01:38 +01001044 struct dhcp_relay *relay4, *relay6;
Floris Bos503c6092017-04-09 23:07:13 +01001045 struct delay_config *delay_conf;
Simon Kelley8ef5ada2010-06-03 19:42:45 +01001046 int override;
Simon Kelley1f15b812009-10-13 17:49:32 +01001047 int enable_pxe;
Simon Kelley1f776932012-12-16 19:46:08 +00001048 int doing_ra, doing_dhcp6;
Simon Kelley8ef5ada2010-06-03 19:42:45 +01001049 struct dhcp_netid_list *dhcp_ignore, *dhcp_ignore_names, *dhcp_gen_names;
1050 struct dhcp_netid_list *force_broadcast, *bootp_dynamic;
Simon Kelley70d18732015-01-31 19:59:29 +00001051 struct hostsfile *dhcp_hosts_file, *dhcp_opts_file, *dynamic_dirs;
Simon Kelleybec366b2016-02-24 22:03:26 +00001052 int dhcp_max, tftp_max, tftp_mtu;
Simon Kelley9e038942008-05-30 20:06:34 +01001053 int dhcp_server_port, dhcp_client_port;
Simon Kelley824af852008-02-12 20:43:05 +00001054 int start_tftp_port, end_tftp_port;
Simon Kelley3be34542004-09-11 19:12:13 +01001055 unsigned int min_leasetime;
1056 struct doctor *doctors;
1057 unsigned short edns_pktsz;
Simon Kelley824af852008-02-12 20:43:05 +00001058 char *tftp_prefix;
Simon Kelley8ef5ada2010-06-03 19:42:45 +01001059 struct tftp_prefix *if_prefix; /* per-interface TFTP prefixes */
Simon Kelley8b372702012-03-09 17:45:10 +00001060 unsigned int duid_enterprise, duid_config_len;
1061 unsigned char *duid_config;
Simon Kelleyad094272012-08-10 17:10:54 +01001062 char *dbus_name;
Simon Kelley6b173352018-05-08 18:32:14 +01001063 char *dump_file;
1064 int dump_mask;
Simon Kelley4f7b3042012-11-28 21:27:02 +00001065 unsigned long soa_sn, soa_refresh, soa_retry, soa_expiry;
Julian Kornbergeraba8bbb2018-07-21 21:55:08 +01001066 u32 metrics[__METRIC_MAX];
Simon Kelleyc6309242013-03-07 20:59:28 +00001067#ifdef OPTION6_PREFIX_CLASS
1068 struct prefix_class *prefix_classes;
1069#endif
Simon Kelley0fc2f312014-01-08 10:26:58 +00001070#ifdef HAVE_DNSSEC
Simon Kelleyee415862014-02-11 11:07:22 +00001071 struct ds_config *ds;
Simon Kelleyf6e62e22015-03-01 18:17:54 +00001072 char *timestamp_file;
Simon Kelley0fc2f312014-01-08 10:26:58 +00001073#endif
Simon Kelley3be34542004-09-11 19:12:13 +01001074
1075 /* globally used stuff for DNS */
1076 char *packet; /* packet buffer */
Simon Kelley0a852542005-03-23 20:28:59 +00001077 int packet_buff_sz; /* size of above */
Simon Kelley3be34542004-09-11 19:12:13 +01001078 char *namebuff; /* MAXDNAME size buffer */
Simon Kelleyc3e0b9b2013-12-31 13:50:39 +00001079#ifdef HAVE_DNSSEC
1080 char *keyname; /* MAXDNAME size buffer */
Simon Kelley5107ace2014-02-23 10:48:32 +00001081 char *workspacename; /* ditto */
Simon Kelleyae7a3b92019-09-03 14:40:47 +01001082 unsigned long *rr_status; /* ceiling in TTL from DNSSEC or zero for insecure */
Simon Kelley373e9172017-12-01 22:40:56 +00001083 int rr_status_sz;
Simon Kelley6b173352018-05-08 18:32:14 +01001084 int dnssec_no_time_check;
1085 int back_to_the_future;
Simon Kelleyc3e0b9b2013-12-31 13:50:39 +00001086#endif
Simon Kelley1a6bca82008-07-11 11:11:42 +01001087 struct frec *frec_list;
Simon Kelley3be34542004-09-11 19:12:13 +01001088 struct serverfd *sfds;
Simon Kelley3d8df262005-08-29 12:19:27 +01001089 struct irec *interfaces;
Simon Kelley3be34542004-09-11 19:12:13 +01001090 struct listener *listeners;
1091 struct server *last_server;
Simon Kelley1f15b812009-10-13 17:49:32 +01001092 time_t forwardtime;
1093 int forwardcount;
Simon Kelleycdeda282006-03-16 20:16:06 +00001094 struct server *srv_save; /* Used for resend on DoD */
1095 size_t packet_len; /* " " */
Simon Kelley3927da42008-07-20 15:10:39 +01001096 struct randfd *rfd_save; /* " " */
Simon Kelley7622fc02009-06-04 20:32:05 +01001097 pid_t tcp_pids[MAX_PROCS];
Simon Kelleya799ca02018-10-18 19:35:29 +01001098 int tcp_pipes[MAX_PROCS];
1099 int pipe_to_parent;
Simon Kelley1a6bca82008-07-11 11:11:42 +01001100 struct randfd randomsocks[RANDOM_SOCKS];
Simon Kelley316e2732010-01-22 20:16:09 +00001101 int v6pktinfo;
Simon Kelleyc8a80482014-03-05 14:29:54 +00001102 struct addrlist *interface_addrs; /* list of all addresses/prefix lengths associated with all local interfaces */
Simon Kelley25cf5e32015-01-09 15:53:03 +00001103 int log_id, log_display_id; /* ids of transactions for logging */
1104 union mysockaddr *log_source_addr;
Simon Kelley1a6bca82008-07-11 11:11:42 +01001105
Simon Kelley3be34542004-09-11 19:12:13 +01001106 /* DHCP state */
Simon Kelley316e2732010-01-22 20:16:09 +00001107 int dhcpfd, helperfd, pxefd;
Simon Kelley04918052015-01-26 11:23:43 +00001108#ifdef HAVE_INOTIFY
1109 int inotifyfd;
1110#endif
Simon Kelley7622fc02009-06-04 20:32:05 +01001111#if defined(HAVE_LINUX_NETWORK)
Simon Kelley04918052015-01-26 11:23:43 +00001112 int netlinkfd;
Simon Kelley7622fc02009-06-04 20:32:05 +01001113#elif defined(HAVE_BSD_NETWORK)
Simon Kelley1ee9be42013-12-09 16:50:19 +00001114 int dhcp_raw_fd, dhcp_icmp_fd, routefd;
Simon Kelley0a852542005-03-23 20:28:59 +00001115#endif
Simon Kelley5e9e0ef2006-04-17 14:24:29 +01001116 struct iovec dhcp_packet;
Simon Kelley8ef5ada2010-06-03 19:42:45 +01001117 char *dhcp_buff, *dhcp_buff2, *dhcp_buff3;
Simon Kelley3d8df262005-08-29 12:19:27 +01001118 struct ping_result *ping_results;
Simon Kelleycdeda282006-03-16 20:16:06 +00001119 FILE *lease_stream;
Simon Kelley832af0b2007-01-21 20:01:28 +00001120 struct dhcp_bridge *bridges;
Simon Kelleyae5b7e02019-03-27 22:33:28 +00001121 struct shared_network *shared_networks;
Simon Kelleyc72daea2012-01-05 21:33:27 +00001122#ifdef HAVE_DHCP6
1123 int duid_len;
1124 unsigned char *duid;
1125 struct iovec outpacket;
Simon Kelleyc5ad4e72012-02-24 16:06:20 +00001126 int dhcp6fd, icmp6fd;
Simon Kelleyc72daea2012-01-05 21:33:27 +00001127#endif
Simon Kelley3d8df262005-08-29 12:19:27 +01001128 /* DBus stuff */
Simon Kelley3d8df262005-08-29 12:19:27 +01001129 /* void * here to avoid depending on dbus headers outside dbus.c */
1130 void *dbus;
Simon Kelley832af0b2007-01-21 20:01:28 +00001131#ifdef HAVE_DBUS
Simon Kelley3d8df262005-08-29 12:19:27 +01001132 struct watch *watches;
1133#endif
Jan Willem Janssena2b82202019-03-25 12:42:23 +01001134 /* UBus stuff */
1135#ifdef HAVE_UBUS
1136 /* void * here to avoid depending on ubus headers outside ubus.c */
1137 void *ubus;
1138#endif
Simon Kelley3d8df262005-08-29 12:19:27 +01001139
Simon Kelley832af0b2007-01-21 20:01:28 +00001140 /* TFTP stuff */
Simon Kelleya9530962012-03-20 22:07:35 +00001141 struct tftp_transfer *tftp_trans, *tftp_done_trans;
Simon Kelley824af852008-02-12 20:43:05 +00001142
Simon Kelleyc72daea2012-01-05 21:33:27 +00001143 /* utility string buffer, hold max sized IP address as string */
1144 char *addrbuff;
Simon Kelley25cf5e32015-01-09 15:53:03 +00001145 char *addrbuff2; /* only allocated when OPT_EXTRALOG */
Simon Kelleyc72daea2012-01-05 21:33:27 +00001146
Simon Kelley6b173352018-05-08 18:32:14 +01001147#ifdef HAVE_DUMPFILE
1148 /* file for packet dumps. */
1149 int dumpfd;
1150#endif
Simon Kelley5aabfc72007-08-29 11:24:47 +01001151} *daemon;
Simon Kelley3be34542004-09-11 19:12:13 +01001152
Simon Kelley9e4abcb2004-01-22 19:47:41 +00001153/* cache.c */
Simon Kelley5aabfc72007-08-29 11:24:47 +01001154void cache_init(void);
Simon Kelley45d8a242018-07-17 21:01:14 +01001155void next_uid(struct crec *crecp);
Simon Kelleycc921df2019-01-02 22:48:59 +00001156void log_query(unsigned int flags, char *name, union all_addr *addr, char *arg);
Simon Kelley19c51cf2014-03-18 22:38:30 +00001157char *record_source(unsigned int index);
Simon Kelley610e7822014-02-06 14:45:17 +00001158char *querystr(char *desc, unsigned short type);
Simon Kelleyb6f926f2018-08-21 17:46:52 +01001159int cache_find_non_terminal(char *name, time_t now);
Simon Kelley9e4abcb2004-01-22 19:47:41 +00001160struct crec *cache_find_by_addr(struct crec *crecp,
Simon Kelleycc921df2019-01-02 22:48:59 +00001161 union all_addr *addr, time_t now,
Simon Kelley12fae492014-02-04 22:03:06 +00001162 unsigned int prot);
Simon Kelley9e4abcb2004-01-22 19:47:41 +00001163struct crec *cache_find_by_name(struct crec *crecp,
Simon Kelley12fae492014-02-04 22:03:06 +00001164 char *name, time_t now, unsigned int prot);
Simon Kelley9e4abcb2004-01-22 19:47:41 +00001165void cache_end_insert(void);
1166void cache_start_insert(void);
Simon Kelleya799ca02018-10-18 19:35:29 +01001167int cache_recv_insert(time_t now, int fd);
Simon Kelleycc921df2019-01-02 22:48:59 +00001168struct crec *cache_insert(char *name, union all_addr *addr, unsigned short class,
Simon Kelley5b99eae2019-01-06 23:09:50 +00001169 time_t now, unsigned long ttl, unsigned int flags);
Simon Kelley7622fc02009-06-04 20:32:05 +01001170void cache_reload(void);
Simon Kelleycc921df2019-01-02 22:48:59 +00001171void cache_add_dhcp_entry(char *host_name, int prot, union all_addr *host_address, time_t ttd);
Simon Kelley7de060b2011-08-26 17:24:52 +01001172struct in_addr a_record_from_hosts(char *name, time_t now);
Simon Kelley9e4abcb2004-01-22 19:47:41 +00001173void cache_unhash_dhcp(void);
Simon Kelley5aabfc72007-08-29 11:24:47 +01001174void dump_cache(time_t now);
Kevin Darbyshire-Bryant7ac9ae12016-09-09 20:52:08 +01001175#ifndef NO_ID
Simon Kelleyfec216d2014-03-27 20:54:34 +00001176int cache_make_stat(struct txt_record *t);
Kevin Darbyshire-Bryant7ac9ae12016-09-09 20:52:08 +01001177#endif
Simon Kelley9e4abcb2004-01-22 19:47:41 +00001178char *cache_get_name(struct crec *crecp);
Simon Kelleyd56a6042013-10-11 14:39:03 +01001179char *cache_get_cname_target(struct crec *crecp);
Simon Kelleyb75e9362012-12-07 11:50:41 +00001180struct crec *cache_enumerate(int init);
Simon Kelley70d18732015-01-31 19:59:29 +00001181int read_hostsfile(char *filename, unsigned int index, int cache_size,
1182 struct crec **rhash, int hashsz);
Simon Kelley98c098b2014-01-08 17:31:16 +00001183
1184/* blockdata.c */
Simon Kelley82e3f452014-01-31 21:05:48 +00001185void blockdata_init(void);
Simon Kelleyc2207682014-01-08 18:04:20 +00001186void blockdata_report(void);
Simon Kelley3a237152013-12-12 12:15:50 +00001187struct blockdata *blockdata_alloc(char *data, size_t len);
Simon Kelley86bec2d2014-01-13 21:31:20 +00001188void *blockdata_retrieve(struct blockdata *block, size_t len, void *data);
Simon Kelleya799ca02018-10-18 19:35:29 +01001189struct blockdata *blockdata_read(int fd, size_t len);
1190void blockdata_write(struct blockdata *block, size_t len, int fd);
Simon Kelley3a237152013-12-12 12:15:50 +00001191void blockdata_free(struct blockdata *blocks);
Simon Kelley9e4abcb2004-01-22 19:47:41 +00001192
Simon Kelley2bb73af2013-04-24 17:38:19 +01001193/* domain.c */
1194char *get_domain(struct in_addr addr);
Simon Kelley2bb73af2013-04-24 17:38:19 +01001195char *get_domain6(struct in6_addr *addr);
Simon Kelleycc921df2019-01-02 22:48:59 +00001196int is_name_synthetic(int flags, char *name, union all_addr *addr);
1197int is_rev_synth(int flag, union all_addr *addr, char *name);
Simon Kelley2bb73af2013-04-24 17:38:19 +01001198
Simon Kelley9e4abcb2004-01-22 19:47:41 +00001199/* rfc1035.c */
Giovanni Bajof53c79c2012-04-22 14:30:53 +02001200int extract_name(struct dns_header *header, size_t plen, unsigned char **pp,
1201 char *name, int isExtract, int extrabytes);
Giovanni Bajo32f82c62012-04-28 01:01:16 +02001202unsigned char *skip_name(unsigned char *ansp, struct dns_header *header, size_t plen, int extrabytes);
Giovanni Bajof53c79c2012-04-22 14:30:53 +02001203unsigned char *skip_questions(struct dns_header *header, size_t plen);
Simon Kelley5107ace2014-02-23 10:48:32 +00001204unsigned char *skip_section(unsigned char *ansp, int count, struct dns_header *header, size_t plen);
Simon Kelley572b41e2011-02-18 18:11:18 +00001205unsigned int extract_request(struct dns_header *header, size_t qlen,
Simon Kelleyc1bb8502004-08-11 18:40:17 +01001206 char *name, unsigned short *typep);
Simon Kelley572b41e2011-02-18 18:11:18 +00001207size_t setup_reply(struct dns_header *header, size_t qlen,
Simon Kelleycc921df2019-01-02 22:48:59 +00001208 union all_addr *addrp, unsigned int flags,
Rosen Penev50a28412017-06-27 22:27:02 +01001209 unsigned long ttl);
1210int extract_addresses(struct dns_header *header, size_t qlen, char *name,
1211 time_t now, char **ipsets, int is_sign, int check_rebind,
Simon Kelley373e9172017-12-01 22:40:56 +00001212 int no_cache_dnssec, int secure, int *doctored);
Simon Kelley572b41e2011-02-18 18:11:18 +00001213size_t answer_request(struct dns_header *header, char *limit, size_t qlen,
Simon Kelley83349b82014-02-10 21:02:01 +00001214 struct in_addr local_addr, struct in_addr local_netmask,
Simon Kelleyfa14bec2015-12-20 17:12:16 +00001215 time_t now, int ad_reqd, int do_bit, int have_pseudoheader);
Simon Kelley572b41e2011-02-18 18:11:18 +00001216int check_for_bogus_wildcard(struct dns_header *header, size_t qlen, char *name,
Rosen Penev50a28412017-06-27 22:27:02 +01001217 struct bogus_addr *baddr, time_t now);
Glen Huang32fc6db2014-12-27 15:28:12 +00001218int check_for_ignored_address(struct dns_header *header, size_t qlen, struct bogus_addr *baddr);
Simon Kelley5aabfc72007-08-29 11:24:47 +01001219int check_for_local_domain(char *name, time_t now);
Rosen Penev50a28412017-06-27 22:27:02 +01001220unsigned int questions_crc(struct dns_header *header, size_t plen, char *name);
Simon Kelley572b41e2011-02-18 18:11:18 +00001221size_t resize_packet(struct dns_header *header, size_t plen,
Simon Kelleycdeda282006-03-16 20:16:06 +00001222 unsigned char *pheader, size_t hlen);
Simon Kelley4f7b3042012-11-28 21:27:02 +00001223int add_resource_record(struct dns_header *header, char *limit, int *truncp,
Simon Kelleyb75e9362012-12-07 11:50:41 +00001224 int nameoffset, unsigned char **pp, unsigned long ttl,
Simon Kelleye1ff4192012-12-09 17:08:47 +00001225 int *offset, unsigned short type, unsigned short class, char *format, ...);
Simon Kelleycc921df2019-01-02 22:48:59 +00001226int in_arpa_name_2_addr(char *namein, union all_addr *addrp);
Simon Kelleydc27e142013-10-16 13:09:53 +01001227int private_net(struct in_addr addr, int ban_localhost);
Simon Kelley4f7b3042012-11-28 21:27:02 +00001228
1229/* auth.c */
Simon Kelley4820dce2012-12-18 18:30:30 +00001230#ifdef HAVE_AUTH
Simon Kelley19b16892013-10-20 10:19:39 +01001231size_t answer_auth(struct dns_header *header, char *limit, size_t qlen,
Simon Kelleyfa14bec2015-12-20 17:12:16 +00001232 time_t now, union mysockaddr *peer_addr, int local_query,
1233 int do_bit, int have_pseudoheader);
Simon Kelleyb485ed92013-10-18 22:00:39 +01001234int in_zone(struct auth_zone *zone, char *name, char **cut);
Simon Kelley4820dce2012-12-18 18:30:30 +00001235#endif
Simon Kelley9e4abcb2004-01-22 19:47:41 +00001236
Giovanni Bajof53c79c2012-04-22 14:30:53 +02001237/* dnssec.c */
Simon Kelleye1791f32018-10-06 23:23:23 +01001238size_t dnssec_generate_query(struct dns_header *header, unsigned char *end, char *name, int class, int type, int edns_pktsz);
Rosen Penev50a28412017-06-27 22:27:02 +01001239int dnssec_validate_by_ds(time_t now, struct dns_header *header, size_t plen, char *name, char *keyname, int class);
Simon Kelleyc3e0b9b2013-12-31 13:50:39 +00001240int dnssec_validate_ds(time_t now, struct dns_header *header, size_t plen, char *name, char *keyname, int class);
Simon Kelley9a31b682015-12-15 10:20:39 +00001241int dnssec_validate_reply(time_t now, struct dns_header *header, size_t plen, char *name, char *keyname, int *class,
Simon Kelleyfef2f1c2019-08-29 21:59:00 +01001242 int check_unsigned, int *neganswer, int *nons, int *nsec_ttl);
Rosen Penev50a28412017-06-27 22:27:02 +01001243int dnskey_keytag(int alg, int flags, unsigned char *key, int keylen);
Simon Kelley613ad152014-02-25 23:02:28 +00001244size_t filter_rrsigs(struct dns_header *header, size_t plen);
Simon Kelley8a9be9e2014-01-25 23:17:21 +00001245unsigned char* hash_questions(struct dns_header *header, size_t plen, char *name);
Simon Kelley360f2512015-03-07 18:28:06 +00001246int setup_timestamp(void);
Giovanni Bajof53c79c2012-04-22 14:30:53 +02001247
Simon Kelleyad9c6f02017-10-27 22:13:49 +01001248/* crypto.c */
1249const struct nettle_hash *hash_find(char *name);
1250int hash_init(const struct nettle_hash *hash, void **ctxp, unsigned char **digestp);
Simon Kelleyad9c6f02017-10-27 22:13:49 +01001251int verify(struct blockdata *key_data, unsigned int key_len, unsigned char *sig, size_t sig_len,
1252 unsigned char *digest, size_t digest_len, int algo);
1253char *ds_digest_name(int digest);
1254char *algo_digest_name(int algo);
1255char *nsec3_digest_name(int digest);
1256
Simon Kelley9e4abcb2004-01-22 19:47:41 +00001257/* util.c */
Simon Kelley1a6bca82008-07-11 11:11:42 +01001258void rand_init(void);
Simon Kelley9e4abcb2004-01-22 19:47:41 +00001259unsigned short rand16(void);
Simon Kelleyb5ea1cc2014-07-29 16:34:14 +01001260u32 rand32(void);
Simon Kelley6586e832013-11-07 14:20:13 +00001261u64 rand64(void);
Rosen Penev50a28412017-06-27 22:27:02 +01001262int legal_hostname(char *name);
1263char *canonicalise(char *in, int *nomem);
Simon Kelley0549c732017-09-25 18:17:11 +01001264unsigned char *do_rfc1035_name(unsigned char *p, char *sval, char *limit);
Simon Kelley0a852542005-03-23 20:28:59 +00001265void *safe_malloc(size_t size);
Petr Menšík47b45b22018-08-15 18:17:00 +02001266void safe_strncpy(char *dest, const char *src, size_t size);
Simon Kelley1a6bca82008-07-11 11:11:42 +01001267void safe_pipe(int *fd, int read_noblock);
Simon Kelley5aabfc72007-08-29 11:24:47 +01001268void *whine_malloc(size_t size);
Simon Kelley9e4abcb2004-01-22 19:47:41 +00001269int sa_len(union mysockaddr *addr);
1270int sockaddr_isequal(union mysockaddr *s1, union mysockaddr *s2);
Simon Kelleyc99df932012-10-12 13:39:04 +01001271int hostname_isequal(const char *a, const char *b);
Simon Kelleyb6f926f2018-08-21 17:46:52 +01001272int hostname_issubdomain(char *a, char *b);
Simon Kelley5e9e0ef2006-04-17 14:24:29 +01001273time_t dnsmasq_time(void);
Lung-Pin Changdc8a1b12014-07-02 10:48:05 +08001274int netmask_length(struct in_addr mask);
Simon Kelleya84fa1d2004-04-23 22:21:21 +01001275int is_same_net(struct in_addr a, struct in_addr b, struct in_addr mask);
Simon Kelleyc72daea2012-01-05 21:33:27 +00001276int is_same_net6(struct in6_addr *a, struct in6_addr *b, int prefixlen);
Simon Kelley52b92f42012-01-22 16:05:15 +00001277u64 addr6part(struct in6_addr *addr);
1278void setaddr6part(struct in6_addr *addr, u64 host);
Simon Kelleyff841eb2015-03-11 21:36:30 +00001279int retry_send(ssize_t rc);
Simon Kelley0a852542005-03-23 20:28:59 +00001280void prettyprint_time(char *buf, unsigned int t);
Simon Kelley3d8df262005-08-29 12:19:27 +01001281int prettyprint_addr(union mysockaddr *addr, char *buf);
Simon Kelley0a852542005-03-23 20:28:59 +00001282int parse_hex(char *in, unsigned char *out, int maxlen,
Simon Kelleycdeda282006-03-16 20:16:06 +00001283 unsigned int *wildcard_mask, int *mac_type);
Simon Kelley5e9e0ef2006-04-17 14:24:29 +01001284int memcmp_masked(unsigned char *a, unsigned char *b, int len,
1285 unsigned int mask);
1286int expand_buf(struct iovec *iov, size_t size);
Simon Kelley5aabfc72007-08-29 11:24:47 +01001287char *print_mac(char *buff, unsigned char *mac, int len);
Simon Kelley16972692006-10-16 20:04:18 +01001288int read_write(int fd, unsigned char *packet, int size, int rw);
Simon Kelley7cebd202006-05-06 14:13:33 +01001289
Simon Kelley49333cb2013-03-15 20:30:51 +00001290int wildcard_match(const char* wildcard, const char* match);
Neil Jerram70772c92014-06-11 21:22:40 +01001291int wildcard_matchn(const char* wildcard, const char* match, int num);
Simon Kelley49333cb2013-03-15 20:30:51 +00001292
Simon Kelleyf2621c72007-04-29 19:47:21 +01001293/* log.c */
Petr Menšík282eab72018-08-15 19:41:07 +02001294void die(char *message, char *arg1, int exit_code) ATTRIBUTE_NORETURN;
Simon Kelley1a6bca82008-07-11 11:11:42 +01001295int log_start(struct passwd *ent_pw, int errfd);
Simon Kelley5aabfc72007-08-29 11:24:47 +01001296int log_reopen(char *log_file);
Rosen Penevcbd29e52017-06-27 22:29:51 +01001297
Simon Kelleyf2621c72007-04-29 19:47:21 +01001298void my_syslog(int priority, const char *format, ...);
Rosen Penevcbd29e52017-06-27 22:29:51 +01001299
Simon Kelleyb842bc92015-07-12 21:09:11 +01001300void set_log_writer(void);
1301void check_log_writer(int force);
Simon Kelley5aabfc72007-08-29 11:24:47 +01001302void flush_log(void);
Simon Kelleyf2621c72007-04-29 19:47:21 +01001303
Simon Kelley9e4abcb2004-01-22 19:47:41 +00001304/* option.c */
Simon Kelley5aabfc72007-08-29 11:24:47 +01001305void read_opts (int argc, char **argv, char *compile_opts);
Simon Kelley4cb1b322012-02-06 14:30:41 +00001306char *option_string(int prot, unsigned int opt, unsigned char *val,
1307 int opt_len, char *buf, int buf_len);
Simon Kelley824af852008-02-12 20:43:05 +00001308void reread_dhcp(void);
Simon Kelley7b1eae42014-02-20 13:43:28 +00001309void read_servers_file(void);
Simon Kelley28866e92011-02-14 20:19:14 +00001310void set_option_bool(unsigned int opt);
Simon Kelley2b5bae92012-06-26 16:55:23 +01001311void reset_option_bool(unsigned int opt);
Simon Kelley28866e92011-02-14 20:19:14 +00001312struct hostsfile *expand_filelist(struct hostsfile *list);
Simon Kelleyfaafb3f2012-09-20 14:17:39 +01001313char *parse_server(char *arg, union mysockaddr *addr,
1314 union mysockaddr *source_addr, char *interface, int *flags);
Simon Kelley70d18732015-01-31 19:59:29 +00001315int option_read_dynfile(char *file, int flags);
1316
Simon Kelley9e4abcb2004-01-22 19:47:41 +00001317/* forward.c */
Simon Kelley1a6bca82008-07-11 11:11:42 +01001318void reply_query(int fd, int family, time_t now);
Simon Kelley5aabfc72007-08-29 11:24:47 +01001319void receive_query(struct listener *listen, time_t now);
1320unsigned char *tcp_request(int confd, time_t now,
Simon Kelley4f7b3042012-11-28 21:27:02 +00001321 union mysockaddr *local_addr, struct in_addr netmask, int auth_dns);
Simon Kelley5aabfc72007-08-29 11:24:47 +01001322void server_gone(struct server *server);
Simon Kelley3a237152013-12-12 12:15:50 +00001323struct frec *get_new_frec(time_t now, int *wait, int force);
Simon Kelley29689cf2012-03-22 14:01:00 +00001324int send_from(int fd, int nowild, char *packet, size_t len,
Simon Kelleycc921df2019-01-02 22:48:59 +00001325 union mysockaddr *to, union all_addr *source,
Simon Kelley50303b12012-04-04 22:13:17 +01001326 unsigned int iface);
Rosen Penev50a28412017-06-27 22:27:02 +01001327void resend_query(void);
Simon Kelleyb5ea1cc2014-07-29 16:34:14 +01001328struct randfd *allocate_rfd(int family);
1329void free_rfd(struct randfd *rfd);
Simon Kelley9e4abcb2004-01-22 19:47:41 +00001330
1331/* network.c */
Simon Kelley7622fc02009-06-04 20:32:05 +01001332int indextoname(int fd, int index, char *name);
Simon Kelley9d6918d2017-10-13 17:55:09 +01001333int local_bind(int fd, union mysockaddr *addr, char *intname, unsigned int ifindex, int is_tcp);
Simon Kelley1a6bca82008-07-11 11:11:42 +01001334int random_sock(int family);
Simon Kelley824af852008-02-12 20:43:05 +00001335void pre_allocate_sfds(void);
Simon Kelley5aabfc72007-08-29 11:24:47 +01001336int reload_servers(char *fname);
Simon Kelleyd68c2ca2014-02-18 22:30:30 +00001337void mark_servers(int flag);
1338void cleanup_servers(void);
1339void add_update_server(int flags,
1340 union mysockaddr *addr,
1341 union mysockaddr *source_addr,
1342 const char *interface,
1343 const char *domain);
Simon Kelley5aabfc72007-08-29 11:24:47 +01001344void check_servers(void);
Simon Kelley115ac3e2013-05-20 11:28:32 +01001345int enumerate_interfaces(int reset);
Simon Kelley74c95c22011-10-19 09:33:39 +01001346void create_wildcard_listeners(void);
Rosen Penev50a28412017-06-27 22:27:02 +01001347void create_bound_listeners(int dienow);
Simon Kelleydc27e142013-10-16 13:09:53 +01001348void warn_bound_listeners(void);
Petr Menšíkad59f272017-03-17 17:22:19 +00001349void warn_wild_labels(void);
Simon Kelleyf7029f52013-11-21 15:09:09 +00001350void warn_int_names(void);
Simon Kelley74c95c22011-10-19 09:33:39 +01001351int is_dad_listeners(void);
Simon Kelleycc921df2019-01-02 22:48:59 +00001352int iface_check(int family, union all_addr *addr, char *name, int *auth);
1353int loopback_exception(int fd, int family, union all_addr *addr, char *name);
1354int label_exception(int index, int family, union all_addr *addr);
Simon Kelley7cebd202006-05-06 14:13:33 +01001355int fix_fd(int fd);
Simon Kelley22ce5502013-01-22 13:53:04 +00001356int tcp_interface(int fd, int af);
Simon Kelleyc72daea2012-01-05 21:33:27 +00001357int set_ipv6pktinfo(int fd);
Simon Kelley5d162f22012-12-20 14:55:46 +00001358#ifdef HAVE_DHCP6
1359void join_multicast(int dienow);
1360#endif
Simon Kelley1ee9be42013-12-09 16:50:19 +00001361#if defined(HAVE_LINUX_NETWORK) || defined(HAVE_BSD_NETWORK)
1362void newaddress(time_t now);
1363#endif
1364
Simon Kelley3be34542004-09-11 19:12:13 +01001365
Simon Kelley9e4abcb2004-01-22 19:47:41 +00001366/* dhcp.c */
Simon Kelley7622fc02009-06-04 20:32:05 +01001367#ifdef HAVE_DHCP
Simon Kelley5aabfc72007-08-29 11:24:47 +01001368void dhcp_init(void);
Simon Kelley316e2732010-01-22 20:16:09 +00001369void dhcp_packet(time_t now, int pxe_fd);
Simon Kelley824af852008-02-12 20:43:05 +00001370struct dhcp_context *address_available(struct dhcp_context *context,
Rosen Penev50a28412017-06-27 22:27:02 +01001371 struct in_addr taddr,
Simon Kelley824af852008-02-12 20:43:05 +00001372 struct dhcp_netid *netids);
1373struct dhcp_context *narrow_context(struct dhcp_context *context,
1374 struct in_addr taddr,
1375 struct dhcp_netid *netids);
Simon Kelley5ce3e762017-04-28 22:14:20 +01001376struct ping_result *do_icmp_ping(time_t now, struct in_addr addr,
Simon Kelleyc7be0162017-05-10 22:21:53 +01001377 unsigned int hash, int loopback);
Simon Kelley8ef5ada2010-06-03 19:42:45 +01001378int address_allocate(struct dhcp_context *context,
Simon Kelleycdeda282006-03-16 20:16:06 +00001379 struct in_addr *addrp, unsigned char *hwaddr, int hw_len,
Simon Kelleyc7be0162017-05-10 22:21:53 +01001380 struct dhcp_netid *netids, time_t now, int loopback);
Simon Kelley5aabfc72007-08-29 11:24:47 +01001381void dhcp_read_ethers(void);
Simon Kelleydfa666f2004-08-02 18:27:27 +01001382struct dhcp_config *config_find_by_address(struct dhcp_config *configs, struct in_addr addr);
Simon Kelley5aabfc72007-08-29 11:24:47 +01001383char *host_from_dns(struct in_addr addr);
Simon Kelley7622fc02009-06-04 20:32:05 +01001384#endif
Simon Kelley3be34542004-09-11 19:12:13 +01001385
Simon Kelley9e4abcb2004-01-22 19:47:41 +00001386/* lease.c */
Simon Kelley7622fc02009-06-04 20:32:05 +01001387#ifdef HAVE_DHCP
Simon Kelley5aabfc72007-08-29 11:24:47 +01001388void lease_update_file(time_t now);
Simon Kelley353ae4d2012-03-19 20:07:51 +00001389void lease_update_dns(int force);
Simon Kelley5aabfc72007-08-29 11:24:47 +01001390void lease_init(time_t now);
Simon Kelley52b92f42012-01-22 16:05:15 +00001391struct dhcp_lease *lease4_allocate(struct in_addr addr);
Simon Kelleyc72daea2012-01-05 21:33:27 +00001392#ifdef HAVE_DHCP6
Simon Kelley4cb1b322012-02-06 14:30:41 +00001393struct dhcp_lease *lease6_allocate(struct in6_addr *addrp, int lease_type);
1394struct dhcp_lease *lease6_find(unsigned char *clid, int clid_len,
Dominik DL6ER456a3192019-10-20 18:51:52 +02001395 int lease_type, unsigned int iaid, struct in6_addr *addr);
Simon Kelleya6ebfac2013-03-06 20:52:35 +00001396void lease6_reset(void);
Dominik DL6ER456a3192019-10-20 18:51:52 +02001397struct dhcp_lease *lease6_find_by_client(struct dhcp_lease *first, int lease_type,
1398 unsigned char *clid, int clid_len, unsigned int iaid);
Simon Kelley52b92f42012-01-22 16:05:15 +00001399struct dhcp_lease *lease6_find_by_addr(struct in6_addr *net, int prefix, u64 addr);
Simon Kelley07933802012-02-14 20:55:25 +00001400u64 lease_find_max_addr6(struct dhcp_context *context);
Simon Kelley353ae4d2012-03-19 20:07:51 +00001401void lease_ping_reply(struct in6_addr *sender, unsigned char *packet, char *interface);
Simon Kelley0c050242012-12-22 22:13:19 +00001402void lease_update_slaac(time_t now);
Dominik DL6ER456a3192019-10-20 18:51:52 +02001403void lease_set_iaid(struct dhcp_lease *lease, unsigned int iaid);
Simon Kelley3511a922013-11-07 10:28:11 +00001404void lease_make_duid(time_t now);
Simon Kelleyc72daea2012-01-05 21:33:27 +00001405#endif
Nicolas Cavallari64bcff12015-04-28 21:55:18 +01001406void lease_set_hwaddr(struct dhcp_lease *lease, const unsigned char *hwaddr,
1407 const unsigned char *clid, int hw_len, int hw_type,
1408 int clid_len, time_t now, int force);
1409void lease_set_hostname(struct dhcp_lease *lease, const char *name, int auth, char *domain, char *config_domain);
Simon Kelley5e9e0ef2006-04-17 14:24:29 +01001410void lease_set_expires(struct dhcp_lease *lease, unsigned int len, time_t now);
Simon Kelley353ae4d2012-03-19 20:07:51 +00001411void lease_set_interface(struct dhcp_lease *lease, int interface, time_t now);
Simon Kelleycdeda282006-03-16 20:16:06 +00001412struct dhcp_lease *lease_find_by_client(unsigned char *hwaddr, int hw_len, int hw_type,
Simon Kelley0a852542005-03-23 20:28:59 +00001413 unsigned char *clid, int clid_len);
Simon Kelley9e4abcb2004-01-22 19:47:41 +00001414struct dhcp_lease *lease_find_by_addr(struct in_addr addr);
Simon Kelley7de060b2011-08-26 17:24:52 +01001415struct in_addr lease_find_max_addr(struct dhcp_context *context);
Simon Kelley9e4abcb2004-01-22 19:47:41 +00001416void lease_prune(struct dhcp_lease *target, time_t now);
Simon Kelley5aabfc72007-08-29 11:24:47 +01001417void lease_update_from_configs(void);
1418int do_script_run(time_t now);
1419void rerun_scripts(void);
Simon Kelley8b372702012-03-09 17:45:10 +00001420void lease_find_interfaces(time_t now);
Simon Kelleyceae00d2012-02-09 21:28:14 +00001421#ifdef HAVE_SCRIPT
1422void lease_add_extradata(struct dhcp_lease *lease, unsigned char *data,
1423 unsigned int len, int delim);
1424#endif
Simon Kelley7622fc02009-06-04 20:32:05 +01001425#endif
Simon Kelleya84fa1d2004-04-23 22:21:21 +01001426
Simon Kelley9e4abcb2004-01-22 19:47:41 +00001427/* rfc2131.c */
Simon Kelley7622fc02009-06-04 20:32:05 +01001428#ifdef HAVE_DHCP
Simon Kelley824af852008-02-12 20:43:05 +00001429size_t dhcp_reply(struct dhcp_context *context, char *iface_name, int int_index,
Simon Kelleyc7be0162017-05-10 22:21:53 +01001430 size_t sz, time_t now, int unicast_dest, int loopback,
Rosen Penev50a28412017-06-27 22:27:02 +01001431 int *is_inform, int pxe, struct in_addr fallback, time_t recvtime);
Simon Kelley9009d742008-11-14 20:04:27 +00001432unsigned char *extended_hwaddr(int hwtype, int hwlen, unsigned char *hwaddr,
1433 int clid_len, unsigned char *clid, int *len_out);
Simon Kelley7622fc02009-06-04 20:32:05 +01001434#endif
Simon Kelley3be34542004-09-11 19:12:13 +01001435
1436/* dnsmasq.c */
Simon Kelley7622fc02009-06-04 20:32:05 +01001437#ifdef HAVE_DHCP
Simon Kelley5e9e0ef2006-04-17 14:24:29 +01001438int make_icmp_sock(void);
Simon Kelley5aabfc72007-08-29 11:24:47 +01001439int icmp_ping(struct in_addr addr);
Floris Bos503c6092017-04-09 23:07:13 +01001440int delay_dhcp(time_t start, int sec, int fd, uint32_t addr, unsigned short id);
Simon Kelley7622fc02009-06-04 20:32:05 +01001441#endif
Simon Kelley47a95162014-07-08 22:22:02 +01001442void queue_event(int event);
Simon Kelley353ae4d2012-03-19 20:07:51 +00001443void send_alarm(time_t event, time_t now);
Simon Kelleyc72daea2012-01-05 21:33:27 +00001444void send_event(int fd, int event, int data, char *msg);
Simon Kelley5aabfc72007-08-29 11:24:47 +01001445void clear_cache_and_reload(time_t now);
Simon Kelley44a2a312004-03-10 20:04:35 +00001446
Simon Kelley0a852542005-03-23 20:28:59 +00001447/* netlink.c */
Simon Kelley5e9e0ef2006-04-17 14:24:29 +01001448#ifdef HAVE_LINUX_NETWORK
Simon Kelley5aabfc72007-08-29 11:24:47 +01001449void netlink_init(void);
Simon Kelleya0358e52014-06-07 13:38:48 +01001450void netlink_multicast(void);
Simon Kelley5e9e0ef2006-04-17 14:24:29 +01001451#endif
1452
1453/* bpf.c */
Simon Kelley824af852008-02-12 20:43:05 +00001454#ifdef HAVE_BSD_NETWORK
Simon Kelley5aabfc72007-08-29 11:24:47 +01001455void init_bpf(void);
1456void send_via_bpf(struct dhcp_packet *mess, size_t len,
Simon Kelley5e9e0ef2006-04-17 14:24:29 +01001457 struct in_addr iface_addr, struct ifreq *ifr);
Simon Kelley1ee9be42013-12-09 16:50:19 +00001458void route_init(void);
Simon Kelleya0358e52014-06-07 13:38:48 +01001459void route_sock(void);
Simon Kelley0a852542005-03-23 20:28:59 +00001460#endif
Simon Kelley3d8df262005-08-29 12:19:27 +01001461
Simon Kelley824af852008-02-12 20:43:05 +00001462/* bpf.c or netlink.c */
Simon Kelley28866e92011-02-14 20:19:14 +00001463int iface_enumerate(int family, void *parm, int (callback)());
Simon Kelley824af852008-02-12 20:43:05 +00001464
Simon Kelley3d8df262005-08-29 12:19:27 +01001465/* dbus.c */
1466#ifdef HAVE_DBUS
Simon Kelley5aabfc72007-08-29 11:24:47 +01001467char *dbus_init(void);
Simon Kelleyb842bc92015-07-12 21:09:11 +01001468void check_dbus_listeners(void);
1469void set_dbus_listeners(void);
Simon Kelley316e2732010-01-22 20:16:09 +00001470# ifdef HAVE_DHCP
Simon Kelley1f15b812009-10-13 17:49:32 +01001471void emit_dbus_signal(int action, struct dhcp_lease *lease, char *hostname);
Simon Kelley316e2732010-01-22 20:16:09 +00001472# endif
Simon Kelley3d8df262005-08-29 12:19:27 +01001473#endif
Simon Kelley16972692006-10-16 20:04:18 +01001474
Julian Kornbergercaf4d572018-07-21 21:45:03 +01001475/* ubus.c */
1476#ifdef HAVE_UBUS
Jan Willem Janssena2b82202019-03-25 12:42:23 +01001477void ubus_init(void);
Julian Kornbergercaf4d572018-07-21 21:45:03 +01001478void set_ubus_listeners(void);
1479void check_ubus_listeners(void);
1480void ubus_event_bcast(const char *type, const char *mac, const char *ip, const char *name, const char *interface);
1481#endif
1482
Jason A. Donenfeld13d86c72013-02-22 18:20:53 +00001483/* ipset.c */
1484#ifdef HAVE_IPSET
1485void ipset_init(void);
Simon Kelleycc921df2019-01-02 22:48:59 +00001486int add_to_ipset(const char *setname, const union all_addr *ipaddr, int flags, int remove);
Jason A. Donenfeld13d86c72013-02-22 18:20:53 +00001487#endif
1488
Simon Kelley16972692006-10-16 20:04:18 +01001489/* helper.c */
Simon Kelley00683012012-03-19 20:29:55 +00001490#if defined(HAVE_SCRIPT)
Simon Kelley1a6bca82008-07-11 11:11:42 +01001491int create_helper(int event_fd, int err_fd, uid_t uid, gid_t gid, long max_fd);
Simon Kelley5aabfc72007-08-29 11:24:47 +01001492void helper_write(void);
1493void queue_script(int action, struct dhcp_lease *lease,
1494 char *hostname, time_t now);
Simon Kelleya9530962012-03-20 22:07:35 +00001495#ifdef HAVE_TFTP
1496void queue_tftp(off_t file_len, char *filename, union mysockaddr *peer);
1497#endif
Simon Kelley33702ab2015-12-28 23:17:15 +00001498void queue_arp(int action, unsigned char *mac, int maclen,
Simon Kelleycc921df2019-01-02 22:48:59 +00001499 int family, union all_addr *addr);
Simon Kelley16972692006-10-16 20:04:18 +01001500int helper_buf_empty(void);
Simon Kelley5aabfc72007-08-29 11:24:47 +01001501#endif
Simon Kelley832af0b2007-01-21 20:01:28 +00001502
1503/* tftp.c */
1504#ifdef HAVE_TFTP
Simon Kelley5aabfc72007-08-29 11:24:47 +01001505void tftp_request(struct listener *listen, time_t now);
Simon Kelleyb842bc92015-07-12 21:09:11 +01001506void check_tftp_listeners(time_t now);
Simon Kelleya9530962012-03-20 22:07:35 +00001507int do_tftp_script_run(void);
Simon Kelley832af0b2007-01-21 20:01:28 +00001508#endif
Simon Kelley7de060b2011-08-26 17:24:52 +01001509
1510/* conntrack.c */
1511#ifdef HAVE_CONNTRACK
Simon Kelleycc921df2019-01-02 22:48:59 +00001512int get_incoming_mark(union mysockaddr *peer_addr, union all_addr *local_addr,
Simon Kelley7de060b2011-08-26 17:24:52 +01001513 int istcp, unsigned int *markp);
1514#endif
Simon Kelleyc72daea2012-01-05 21:33:27 +00001515
Simon Kelley52b92f42012-01-22 16:05:15 +00001516/* dhcp6.c */
1517#ifdef HAVE_DHCP6
1518void dhcp6_init(void);
1519void dhcp6_packet(time_t now);
Simon Kelley6586e832013-11-07 14:20:13 +00001520struct dhcp_context *address6_allocate(struct dhcp_context *context, unsigned char *clid, int clid_len, int temp_addr,
Dominik DL6ER456a3192019-10-20 18:51:52 +02001521 unsigned int iaid, int serial, struct dhcp_netid *netids, int plain_range, struct in6_addr *ans);
Simon Kelleyde92b472013-03-15 18:25:10 +00001522int config_valid(struct dhcp_config *config, struct dhcp_context *context, struct in6_addr *addr);
Simon Kelley52b92f42012-01-22 16:05:15 +00001523struct dhcp_context *address6_available(struct dhcp_context *context,
1524 struct in6_addr *taddr,
Simon Kelleyc6309242013-03-07 20:59:28 +00001525 struct dhcp_netid *netids,
1526 int plain_range);
Simon Kelley37c9cce2013-01-09 19:51:04 +00001527struct dhcp_context *address6_valid(struct dhcp_context *context,
1528 struct in6_addr *taddr,
Simon Kelleyc6309242013-03-07 20:59:28 +00001529 struct dhcp_netid *netids,
1530 int plain_range);
Simon Kelleyceae00d2012-02-09 21:28:14 +00001531struct dhcp_config *config_find_by_address6(struct dhcp_config *configs, struct in6_addr *net,
1532 int prefix, u64 addr);
Simon Kelley4cb1b322012-02-06 14:30:41 +00001533void make_duid(time_t now);
Simon Kelley1f776932012-12-16 19:46:08 +00001534void dhcp_construct_contexts(time_t now);
Simon Kelley8939c952013-09-25 11:49:34 +01001535void get_client_mac(struct in6_addr *client, int iface, unsigned char *mac,
Simon Kelley33702ab2015-12-28 23:17:15 +00001536 unsigned int *maclenp, unsigned int *mactypep, time_t now);
Simon Kelley52b92f42012-01-22 16:05:15 +00001537#endif
Simon Kelley8939c952013-09-25 11:49:34 +01001538
Simon Kelleyc72daea2012-01-05 21:33:27 +00001539/* rfc3315.c */
1540#ifdef HAVE_DHCP6
Simon Kelley1d0f91c2012-03-12 11:56:22 +00001541unsigned short dhcp6_reply(struct dhcp_context *context, int interface, char *iface_name,
Simon Kelleyc3a04082014-01-11 22:18:19 +00001542 struct in6_addr *fallback, struct in6_addr *ll_addr, struct in6_addr *ula_addr,
1543 size_t sz, struct in6_addr *client_addr, time_t now);
Simon Kelley33702ab2015-12-28 23:17:15 +00001544void relay_upstream6(struct dhcp_relay *relay, ssize_t sz, struct in6_addr *peer_address,
1545 u32 scope_id, time_t now);
Simon Kelleyff7eea22013-09-04 18:01:38 +01001546
1547unsigned short relay_reply6( struct sockaddr_in6 *peer, ssize_t sz, char *arrival_interface);
Simon Kelleyc72daea2012-01-05 21:33:27 +00001548#endif
Simon Kelley4cb1b322012-02-06 14:30:41 +00001549
1550/* dhcp-common.c */
Simon Kelleyceae00d2012-02-09 21:28:14 +00001551#ifdef HAVE_DHCP
Simon Kelley4cb1b322012-02-06 14:30:41 +00001552void dhcp_common_init(void);
1553ssize_t recv_dhcp_packet(int fd, struct msghdr *msg);
Rosen Penev50a28412017-06-27 22:27:02 +01001554struct dhcp_netid *run_tag_if(struct dhcp_netid *tags);
Simon Kelley4cb1b322012-02-06 14:30:41 +00001555struct dhcp_netid *option_filter(struct dhcp_netid *tags, struct dhcp_netid *context_tags,
1556 struct dhcp_opt *opts);
Rosen Penev50a28412017-06-27 22:27:02 +01001557int match_netid(struct dhcp_netid *check, struct dhcp_netid *pool, int tagnotneeded);
Simon Kelley4cb1b322012-02-06 14:30:41 +00001558char *strip_hostname(char *hostname);
1559void log_tags(struct dhcp_netid *netid, u32 xid);
Simon Kelley3634c542012-02-08 14:22:37 +00001560int match_bytes(struct dhcp_opt *o, unsigned char *p, int len);
Simon Kelleyceae00d2012-02-09 21:28:14 +00001561void dhcp_update_configs(struct dhcp_config *configs);
Simon Kelley40ef23b2012-03-13 21:59:28 +00001562void display_opts(void);
Simon Kelleybd08ae62013-04-19 10:22:06 +01001563int lookup_dhcp_opt(int prot, char *name);
1564int lookup_dhcp_len(int prot, int val);
Simon Kelley89500e32013-09-20 16:29:20 +01001565struct dhcp_config *find_config(struct dhcp_config *configs,
1566 struct dhcp_context *context,
1567 unsigned char *clid, int clid_len,
1568 unsigned char *hwaddr, int hw_len,
1569 int hw_type, char *hostname);
1570int config_has_mac(struct dhcp_config *config, unsigned char *hwaddr, int len, int type);
Simon Kelley9380ba72012-04-16 14:41:56 +01001571#ifdef HAVE_LINUX_NETWORK
Simon Kelley3b3f4412013-10-11 16:33:28 +01001572char *whichdevice(void);
1573void bindtodevice(char *device, int fd);
Simon Kelley9380ba72012-04-16 14:41:56 +01001574#endif
Simon Kelley843c96b2012-02-27 17:42:38 +00001575# ifdef HAVE_DHCP6
Simon Kelley40ef23b2012-03-13 21:59:28 +00001576void display_opts6(void);
Simon Kelley843c96b2012-02-27 17:42:38 +00001577# endif
Simon Kelley1f776932012-12-16 19:46:08 +00001578void log_context(int family, struct dhcp_context *context);
Simon Kelleyff7eea22013-09-04 18:01:38 +01001579void log_relay(int family, struct dhcp_relay *relay);
Simon Kelley9e4abcb2004-01-22 19:47:41 +00001580#endif
Simon Kelleyc5ad4e72012-02-24 16:06:20 +00001581
1582/* outpacket.c */
1583#ifdef HAVE_DHCP6
1584void end_opt6(int container);
Simon Kelleyfa785732016-07-22 20:56:01 +01001585void reset_counter(void);
Simon Kelleyc5ad4e72012-02-24 16:06:20 +00001586int save_counter(int newval);
1587void *expand(size_t headroom);
1588int new_opt6(int opt);
1589void *put_opt6(void *data, size_t len);
1590void put_opt6_long(unsigned int val);
1591void put_opt6_short(unsigned int val);
1592void put_opt6_char(unsigned int val);
1593void put_opt6_string(char *s);
1594#endif
1595
1596/* radv.c */
1597#ifdef HAVE_DHCP6
1598void ra_init(time_t now);
Simon Kelley1f776932012-12-16 19:46:08 +00001599void icmp6_packet(time_t now);
Simon Kelleyc5ad4e72012-02-24 16:06:20 +00001600time_t periodic_ra(time_t now);
Josh Soref730c6742017-02-06 16:14:04 +00001601void ra_start_unsolicited(time_t now, struct dhcp_context *context);
Simon Kelley353ae4d2012-03-19 20:07:51 +00001602#endif
1603
1604/* slaac.c */
1605#ifdef HAVE_DHCP6
Simon Kelleya9ab7322012-04-28 11:29:37 +01001606void slaac_add_addrs(struct dhcp_lease *lease, time_t now, int force);
Simon Kelley353ae4d2012-03-19 20:07:51 +00001607time_t periodic_slaac(time_t now, struct dhcp_lease *leases);
1608void slaac_ping_reply(struct in6_addr *sender, unsigned char *packet, char *interface, struct dhcp_lease *leases);
Simon Kelleyc5ad4e72012-02-24 16:06:20 +00001609#endif
Simon Kelleyb5ea1cc2014-07-29 16:34:14 +01001610
1611/* loop.c */
1612#ifdef HAVE_LOOP
Rosen Penev50a28412017-06-27 22:27:02 +01001613void loop_send_probes(void);
Simon Kelleyb5ea1cc2014-07-29 16:34:14 +01001614int detect_loop(char *query, int type);
1615#endif
1616
Simon Kelley193de4a2014-12-10 17:32:16 +00001617/* inotify.c */
Simon Kelley04918052015-01-26 11:23:43 +00001618#ifdef HAVE_INOTIFY
Rosen Penev50a28412017-06-27 22:27:02 +01001619void inotify_dnsmasq_init(void);
Simon Kelley5f4dc5c2015-01-20 20:51:02 +00001620int inotify_check(time_t now);
Simon Kelley70d18732015-01-31 19:59:29 +00001621void set_dynamic_inotify(int flag, int total_size, struct crec **rhash, int revhashsz);
Simon Kelley193de4a2014-12-10 17:32:16 +00001622#endif
Simon Kelleyb842bc92015-07-12 21:09:11 +01001623
1624/* poll.c */
1625void poll_reset(void);
1626int poll_check(int fd, short event);
1627void poll_listen(int fd, short event);
1628int do_poll(int timeout);
1629
Simon Kelleyc2bcd1e2015-12-15 17:25:21 +00001630/* rrfilter.c */
1631size_t rrfilter(struct dns_header *header, size_t plen, int mode);
1632u16 *rrfilter_desc(int type);
1633int expand_workspace(unsigned char ***wkspc, int *szp, int new);
1634
Simon Kelley1d030162015-12-21 14:17:06 +00001635/* edns0.c */
Simon Kelley5bb88f02015-12-21 16:23:47 +00001636unsigned char *find_pseudoheader(struct dns_header *header, size_t plen,
1637 size_t *len, unsigned char **p, int *is_sign, int *is_last);
Simon Kelley1d030162015-12-21 14:17:06 +00001638size_t add_pseudoheader(struct dns_header *header, size_t plen, unsigned char *limit,
Simon Kelleyc7f3bd22016-02-28 21:48:34 +00001639 unsigned short udp_sz, int optno, unsigned char *opt, size_t optlen, int set_do, int replace);
Simon Kelley33702ab2015-12-28 23:17:15 +00001640size_t add_do_bit(struct dns_header *header, size_t plen, unsigned char *limit);
1641size_t add_edns0_config(struct dns_header *header, size_t plen, unsigned char *limit,
1642 union mysockaddr *source, time_t now, int *check_subnet);
Simon Kelley1d030162015-12-21 14:17:06 +00001643int check_source(struct dns_header *header, size_t plen, unsigned char *pseudoheader, union mysockaddr *peer);
Simon Kelley11867dc2015-12-23 16:15:58 +00001644
1645/* arp.c */
Simon Kelley33702ab2015-12-28 23:17:15 +00001646int find_mac(union mysockaddr *addr, unsigned char *mac, int lazy, time_t now);
1647int do_arp_script_run(void);
Simon Kelley6b173352018-05-08 18:32:14 +01001648
1649/* dump.c */
1650#ifdef HAVE_DUMPFILE
1651void dump_init(void);
1652void dump_packet(int mask, void *packet, size_t len, union mysockaddr *src, union mysockaddr *dst);
1653#endif