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Simon Kelleyd1ced3a2018-01-01 22:18:03 +00001/* dnsmasq is Copyright (c) 2000-2018 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 Kelleyd1ced3a2018-01-01 22:18:03 +000017#define COPYRIGHT "Copyright (c) 2000-2018 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
Simon Kelley9e4abcb2004-01-22 19:47:41 +000045/* get these before config.h for IPv6 stuff... */
Simon Kelley44a2a312004-03-10 20:04:35 +000046#include <sys/types.h>
Simon Kelley1f15b812009-10-13 17:49:32 +010047#include <sys/socket.h>
Simon Kelleyc72daea2012-01-05 21:33:27 +000048
49#ifdef __APPLE__
50/* Define before netinet/in.h to select API. OSX Lion onwards. */
51# define __APPLE_USE_RFC_3542
52#endif
Simon Kelley9e4abcb2004-01-22 19:47:41 +000053#include <netinet/in.h>
54
Simon Kelleyc72daea2012-01-05 21:33:27 +000055/* Also needed before config.h. */
Simon Kelley59353a62004-11-21 19:34:28 +000056#include <getopt.h>
57
Simon Kelley9e4abcb2004-01-22 19:47:41 +000058#include "config.h"
Simon Kelleyc3a04082014-01-11 22:18:19 +000059#include "ip6addr.h"
Julian Kornbergeraba8bbb2018-07-21 21:55:08 +010060#include "metrics.h"
Simon Kelleyb8187c82005-11-26 21:46:27 +000061
Simon Kelley572b41e2011-02-18 18:11:18 +000062typedef unsigned char u8;
63typedef unsigned short u16;
64typedef unsigned int u32;
Simon Kelley52b92f42012-01-22 16:05:15 +000065typedef unsigned long long u64;
Simon Kelley572b41e2011-02-18 18:11:18 +000066
Giovanni Bajo28c62552012-04-25 17:40:13 +020067#define countof(x) (long)(sizeof(x) / sizeof(x[0]))
68#define MIN(a,b) ((a) < (b) ? (a) : (b))
69
Simon Kelleyc239f7d2012-02-27 10:56:18 +000070#include "dns-protocol.h"
71#include "dhcp-protocol.h"
Simon Kelleyc72daea2012-01-05 21:33:27 +000072#ifdef HAVE_DHCP6
Simon Kelleyc239f7d2012-02-27 10:56:18 +000073#include "dhcp6-protocol.h"
74#include "radv-protocol.h"
Simon Kelleyc72daea2012-01-05 21:33:27 +000075#endif
Simon Kelley572b41e2011-02-18 18:11:18 +000076
Simon Kelleyb8187c82005-11-26 21:46:27 +000077#define gettext_noop(S) (S)
Simon Kelley824af852008-02-12 20:43:05 +000078#ifndef LOCALEDIR
Simon Kelleyb8187c82005-11-26 21:46:27 +000079# define _(S) (S)
80#else
81# include <libintl.h>
82# include <locale.h>
83# define _(S) gettext(S)
84#endif
85
Simon Kelley9e4abcb2004-01-22 19:47:41 +000086#include <arpa/inet.h>
87#include <sys/stat.h>
Simon Kelley9e4abcb2004-01-22 19:47:41 +000088#include <sys/ioctl.h>
Simon Kelley824af852008-02-12 20:43:05 +000089#if defined(HAVE_SOLARIS_NETWORK)
Simon Kelley316e2732010-01-22 20:16:09 +000090# include <sys/sockio.h>
Simon Kelley824af852008-02-12 20:43:05 +000091#endif
Simon Kelleyb842bc92015-07-12 21:09:11 +010092#include <sys/poll.h>
Simon Kelleyfeba5c12004-07-27 20:28:58 +010093#include <sys/wait.h>
Simon Kelley9e4abcb2004-01-22 19:47:41 +000094#include <sys/time.h>
Simon Kelleyf2621c72007-04-29 19:47:21 +010095#include <sys/un.h>
Simon Kelley8a911cc2004-03-16 18:35:52 +000096#include <limits.h>
Simon Kelley9e4abcb2004-01-22 19:47:41 +000097#include <net/if.h>
Simon Kelley316e2732010-01-22 20:16:09 +000098#if defined(HAVE_SOLARIS_NETWORK) && !defined(ifr_mtu)
99/* Some solaris net/if./h omit this. */
100# define ifr_mtu ifr_ifru.ifru_metric
101#endif
Simon Kelley9e4abcb2004-01-22 19:47:41 +0000102#include <unistd.h>
103#include <stdio.h>
104#include <string.h>
105#include <stdlib.h>
106#include <fcntl.h>
107#include <ctype.h>
108#include <signal.h>
Simon Kelley9e038942008-05-30 20:06:34 +0100109#include <stddef.h>
Simon Kelley9e4abcb2004-01-22 19:47:41 +0000110#include <time.h>
111#include <errno.h>
112#include <pwd.h>
113#include <grp.h>
Simon Kelleyf6b7dc42005-01-23 12:06:08 +0000114#include <stdarg.h>
Simon Kelley572b41e2011-02-18 18:11:18 +0000115#if defined(__OpenBSD__) || defined(__NetBSD__) || defined(__sun__) || defined (__sun) || defined (__ANDROID__)
Simon Kelley44a2a312004-03-10 20:04:35 +0000116# include <netinet/if_ether.h>
117#else
118# include <net/ethernet.h>
119#endif
Simon Kelley9e4abcb2004-01-22 19:47:41 +0000120#include <net/if_arp.h>
121#include <netinet/in_systm.h>
122#include <netinet/ip.h>
Simon Kelley6b173352018-05-08 18:32:14 +0100123#ifdef HAVE_IPV6
124#include <netinet/ip6.h>
125#endif
Simon Kelley3be34542004-09-11 19:12:13 +0100126#include <netinet/ip_icmp.h>
Simon Kelley9e4abcb2004-01-22 19:47:41 +0000127#include <sys/uio.h>
Simon Kelley849a8352006-06-09 21:02:31 +0100128#include <syslog.h>
129#include <dirent.h>
Simon Kelley5e9e0ef2006-04-17 14:24:29 +0100130#ifndef HAVE_LINUX_NETWORK
131# include <net/if_dl.h>
132#endif
133
Simon Kelley824af852008-02-12 20:43:05 +0000134#if defined(HAVE_LINUX_NETWORK)
Simon Kelley5e9e0ef2006-04-17 14:24:29 +0100135#include <linux/capability.h>
136/* There doesn't seem to be a universally-available
Josh Soref730c6742017-02-06 16:14:04 +0000137 userspace header for these. */
Simon Kelley5e9e0ef2006-04-17 14:24:29 +0100138extern int capset(cap_user_header_t header, cap_user_data_t data);
Simon Kelley9e038942008-05-30 20:06:34 +0100139extern int capget(cap_user_header_t header, cap_user_data_t data);
140#define LINUX_CAPABILITY_VERSION_1 0x19980330
141#define LINUX_CAPABILITY_VERSION_2 0x20071026
Simon Kelley1a6bca82008-07-11 11:11:42 +0100142#define LINUX_CAPABILITY_VERSION_3 0x20080522
Simon Kelley9e038942008-05-30 20:06:34 +0100143
Simon Kelley5e9e0ef2006-04-17 14:24:29 +0100144#include <sys/prctl.h>
Simon Kelley7622fc02009-06-04 20:32:05 +0100145#elif defined(HAVE_SOLARIS_NETWORK)
Simon Kelley824af852008-02-12 20:43:05 +0000146#include <priv.h>
Simon Kelley5e9e0ef2006-04-17 14:24:29 +0100147#endif
Simon Kelley9e4abcb2004-01-22 19:47:41 +0000148
Simon Kelleyad9c6f02017-10-27 22:13:49 +0100149#ifdef HAVE_DNSSEC
150# include <nettle/nettle-meta.h>
151#endif
152
Simon Kelley824af852008-02-12 20:43:05 +0000153/* daemon is function in the C library.... */
Simon Kelley5aabfc72007-08-29 11:24:47 +0100154#define daemon dnsmasq_daemon
155
156/* Async event queue */
157struct event_desc {
Simon Kelleyc72daea2012-01-05 21:33:27 +0000158 int event, data, msg_sz;
Simon Kelley5aabfc72007-08-29 11:24:47 +0100159};
160
Petr Menšíkc77fb9d2017-04-16 20:20:08 +0100161#define EVENT_RELOAD 1
162#define EVENT_DUMP 2
163#define EVENT_ALARM 3
164#define EVENT_TERM 4
165#define EVENT_CHILD 5
166#define EVENT_REOPEN 6
167#define EVENT_EXITED 7
168#define EVENT_KILLED 8
169#define EVENT_EXEC_ERR 9
170#define EVENT_PIPE_ERR 10
171#define EVENT_USER_ERR 11
172#define EVENT_CAP_ERR 12
173#define EVENT_PIDFILE 13
174#define EVENT_HUSER_ERR 14
175#define EVENT_GROUP_ERR 15
176#define EVENT_DIE 16
177#define EVENT_LOG_ERR 17
178#define EVENT_FORK_ERR 18
179#define EVENT_LUA_ERR 19
180#define EVENT_TFTP_ERR 20
181#define EVENT_INIT 21
182#define EVENT_NEWADDR 22
183#define EVENT_NEWROUTE 23
184#define EVENT_TIME_ERR 24
185#define EVENT_SCRIPT_LOG 25
Simon Kelley3c973ad2018-01-14 21:05:37 +0000186#define EVENT_TIME 26
Simon Kelley5aabfc72007-08-29 11:24:47 +0100187
188/* Exit codes. */
189#define EC_GOOD 0
190#define EC_BADCONF 1
191#define EC_BADNET 2
192#define EC_FILE 3
193#define EC_NOMEM 4
194#define EC_MISC 5
195#define EC_INIT_OFFSET 10
196
Simon Kelley572b41e2011-02-18 18:11:18 +0000197/* Trust the compiler dead-code eliminator.... */
Simon Kelley28866e92011-02-14 20:19:14 +0000198#define option_bool(x) (((x) < 32) ? daemon->options & (1u << (x)) : daemon->options2 & (1u << ((x) - 32)))
199
200#define OPT_BOGUSPRIV 0
201#define OPT_FILTER 1
202#define OPT_LOG 2
203#define OPT_SELFMX 3
204#define OPT_NO_HOSTS 4
205#define OPT_NO_POLL 5
206#define OPT_DEBUG 6
207#define OPT_ORDER 7
208#define OPT_NO_RESOLV 8
209#define OPT_EXPAND 9
210#define OPT_LOCALMX 10
211#define OPT_NO_NEG 11
212#define OPT_NODOTS_LOCAL 12
213#define OPT_NOWILD 13
214#define OPT_ETHERS 14
215#define OPT_RESOLV_DOMAIN 15
216#define OPT_NO_FORK 16
217#define OPT_AUTHORITATIVE 17
218#define OPT_LOCALISE 18
219#define OPT_DBUS 19
220#define OPT_DHCP_FQDN 20
221#define OPT_NO_PING 21
222#define OPT_LEASE_RO 22
223#define OPT_ALL_SERVERS 23
224#define OPT_RELOAD 24
225#define OPT_LOCAL_REBIND 25
226#define OPT_TFTP_SECURE 26
227#define OPT_TFTP_NOBLOCK 27
228#define OPT_LOG_OPTS 28
Floris Bos60704f52017-04-09 22:22:49 +0100229#define OPT_TFTP_APREF_IP 29
Simon Kelley28866e92011-02-14 20:19:14 +0000230#define OPT_NO_OVERRIDE 30
231#define OPT_NO_REBIND 31
232#define OPT_ADD_MAC 32
Giovanni Bajo237724c2012-04-05 02:46:52 +0200233#define OPT_DNSSEC_PROXY 33
Simon Kelley7de060b2011-08-26 17:24:52 +0100234#define OPT_CONSEC_ADDR 34
235#define OPT_CONNTRACK 35
Simon Kelleyc72daea2012-01-05 21:33:27 +0000236#define OPT_FQDN_UPDATE 36
Simon Kelleyc5ad4e72012-02-24 16:06:20 +0000237#define OPT_RA 37
Simon Kelley61ce6002012-04-20 21:28:49 +0100238#define OPT_TFTP_LC 38
Simon Kelley54dd3932012-06-20 11:23:38 +0100239#define OPT_CLEVERBIND 39
Simon Kelley8bc4cec2012-07-03 21:04:11 +0100240#define OPT_TFTP 40
Simon Kelley6bd3a092013-10-11 10:25:56 +0100241#define OPT_CLIENT_SUBNET 41
Kevin Darbyshire-Bryant8c0b73d2013-10-11 11:56:33 +0100242#define OPT_QUIET_DHCP 42
243#define OPT_QUIET_DHCP6 43
244#define OPT_QUIET_RA 44
Simon Kelley3a237152013-12-12 12:15:50 +0000245#define OPT_DNSSEC_VALID 45
Simon Kelleye98bd522014-03-28 20:41:23 +0000246#define OPT_DNSSEC_TIME 46
Simon Kelley5b3bf922014-01-25 17:03:07 +0000247#define OPT_DNSSEC_DEBUG 47
Simon Kelleya6918532018-04-15 16:20:52 +0100248#define OPT_DNSSEC_IGN_NS 48
Simon Kelleyc8a80482014-03-05 14:29:54 +0000249#define OPT_LOCAL_SERVICE 49
Simon Kelleyb5ea1cc2014-07-29 16:34:14 +0100250#define OPT_LOOP_DETECT 50
Simon Kelley25cf5e32015-01-09 15:53:03 +0000251#define OPT_EXTRALOG 51
Stefan Tomanek30d08792015-03-31 22:32:11 +0100252#define OPT_TFTP_NO_FAIL 52
Simon Kelley1e505122016-01-25 21:29:23 +0000253#define OPT_SCRIPT_ARP 53
254#define OPT_MAC_B64 54
Simon Kelley9e4cf472016-02-17 20:26:32 +0000255#define OPT_MAC_HEX 55
Floris Bos60704f52017-04-09 22:22:49 +0100256#define OPT_TFTP_APREF_MAC 56
Simon Kelley734d5312018-03-23 23:09:53 +0000257#define OPT_RAPID_COMMIT 57
Julian Kornberger8dcdb332018-07-21 22:11:08 +0100258#define OPT_UBUS 58
259#define OPT_LAST 59
Simon Kelley9e4abcb2004-01-22 19:47:41 +0000260
Simon Kelley7622fc02009-06-04 20:32:05 +0100261/* extra flags for my_syslog, we use a couple of facilities since they are known
262 not to occupy the same bits as priorities, no matter how syslog.h is set up. */
Petr Menšíkc77fb9d2017-04-16 20:20:08 +0100263#define MS_TFTP LOG_USER
264#define MS_DHCP LOG_DAEMON
265#define MS_SCRIPT LOG_MAIL
Simon Kelley7622fc02009-06-04 20:32:05 +0100266
Simon Kelley9e4abcb2004-01-22 19:47:41 +0000267struct all_addr {
268 union {
269 struct in_addr addr4;
270#ifdef HAVE_IPV6
271 struct in6_addr addr6;
272#endif
Simon Kelley51ea3ca2014-01-22 19:31:38 +0000273 /* for log_query */
Simon Kelley15379ea2015-12-21 18:31:55 +0000274 struct {
275 unsigned short keytag, algo, digest;
Simon Kelley07ed5852018-05-04 21:52:22 +0100276 } log;
277 /* for log_query */
278 struct {
279 unsigned int rcode;
280 } rcode;
Simon Kelley15379ea2015-12-21 18:31:55 +0000281 /* for cache_insert of DNSKEY, DS */
Simon Kelley51ea3ca2014-01-22 19:31:38 +0000282 struct {
283 unsigned short class, type;
284 } dnssec;
Simon Kelley9e4abcb2004-01-22 19:47:41 +0000285 } addr;
286};
287
288struct bogus_addr {
289 struct in_addr addr;
290 struct bogus_addr *next;
291};
292
Simon Kelley1cff1662004-03-12 08:12:58 +0000293/* dns doctor param */
294struct doctor {
Simon Kelley73a08a22009-02-05 20:28:08 +0000295 struct in_addr in, end, out, mask;
Simon Kelley1cff1662004-03-12 08:12:58 +0000296 struct doctor *next;
297};
298
Simon Kelley0a852542005-03-23 20:28:59 +0000299struct mx_srv_record {
300 char *name, *target;
Simon Kelley3d8df262005-08-29 12:19:27 +0100301 int issrv, srvport, priority, weight;
302 unsigned int offset;
Simon Kelley0a852542005-03-23 20:28:59 +0000303 struct mx_srv_record *next;
Simon Kelleyde379512004-06-22 20:23:33 +0100304};
305
Simon Kelley1a6bca82008-07-11 11:11:42 +0100306struct naptr {
307 char *name, *replace, *regexp, *services, *flags;
308 unsigned int order, pref;
309 struct naptr *next;
310};
311
Kevin Darbyshire-Bryant7ac9ae12016-09-09 20:52:08 +0100312#ifndef NO_ID
Simon Kelleyfec216d2014-03-27 20:54:34 +0000313#define TXT_STAT_CACHESIZE 1
314#define TXT_STAT_INSERTS 2
315#define TXT_STAT_EVICTIONS 3
316#define TXT_STAT_MISSES 4
317#define TXT_STAT_HITS 5
318#define TXT_STAT_AUTH 6
319#define TXT_STAT_SERVERS 7
Kevin Darbyshire-Bryant7ac9ae12016-09-09 20:52:08 +0100320#endif
Simon Kelleyfec216d2014-03-27 20:54:34 +0000321
Simon Kelley0a852542005-03-23 20:28:59 +0000322struct txt_record {
Simon Kelley28866e92011-02-14 20:19:14 +0000323 char *name;
324 unsigned char *txt;
Simon Kelley0a852542005-03-23 20:28:59 +0000325 unsigned short class, len;
Simon Kelleyfec216d2014-03-27 20:54:34 +0000326 int stat;
Simon Kelley0a852542005-03-23 20:28:59 +0000327 struct txt_record *next;
Simon Kelleyf6b7dc42005-01-23 12:06:08 +0000328};
329
Simon Kelley832af0b2007-01-21 20:01:28 +0000330struct ptr_record {
331 char *name, *ptr;
332 struct ptr_record *next;
333};
334
Simon Kelley9009d742008-11-14 20:04:27 +0000335struct cname {
Simon Kelley903df072017-01-19 17:22:00 +0000336 int ttl, flag;
Simon Kelley9009d742008-11-14 20:04:27 +0000337 char *alias, *target;
Simon Kelley903df072017-01-19 17:22:00 +0000338 struct cname *next, *targetp;
Simon Kelley376d48c2013-11-13 13:04:30 +0000339};
340
Simon Kelleyee415862014-02-11 11:07:22 +0000341struct ds_config {
342 char *name, *digest;
343 int digestlen, class, algo, keytag, digest_type;
344 struct ds_config *next;
Simon Kelley0fc2f312014-01-08 10:26:58 +0000345};
346
Simon Kelley376d48c2013-11-13 13:04:30 +0000347#define ADDRLIST_LITERAL 1
348#define ADDRLIST_IPV6 2
Simon Kelley47669362014-12-17 12:41:56 +0000349#define ADDRLIST_REVONLY 4
Simon Kelley376d48c2013-11-13 13:04:30 +0000350
351struct addrlist {
352 struct all_addr addr;
353 int flags, prefixlen;
354 struct addrlist *next;
Simon Kelley9009d742008-11-14 20:04:27 +0000355};
356
Simon Kelley376d48c2013-11-13 13:04:30 +0000357#define AUTH6 1
358#define AUTH4 2
359
Simon Kelley4f7b3042012-11-28 21:27:02 +0000360struct auth_zone {
361 char *domain;
Simon Kelley376d48c2013-11-13 13:04:30 +0000362 struct auth_name_list {
363 char *name;
364 int flags;
365 struct auth_name_list *next;
366 } *interface_names;
367 struct addrlist *subnet;
Mathias Kresin094bfae2016-07-24 14:15:22 +0100368 struct addrlist *exclude;
Simon Kelley4f7b3042012-11-28 21:27:02 +0000369 struct auth_zone *next;
370};
371
372
Simon Kelleye759d422012-03-16 13:18:57 +0000373struct host_record {
Simon Kelleydf3d54f2016-02-24 21:03:38 +0000374 int ttl;
Simon Kelleye759d422012-03-16 13:18:57 +0000375 struct name_list {
376 char *name;
377 struct name_list *next;
378 } *names;
379 struct in_addr addr;
380#ifdef HAVE_IPV6
381 struct in6_addr addr6;
382#endif
383 struct host_record *next;
384};
385
Simon Kelleyf2621c72007-04-29 19:47:21 +0100386struct interface_name {
387 char *name; /* domain name */
388 char *intr; /* interface name */
Simon Kelleyf7029f52013-11-21 15:09:09 +0000389 int family; /* AF_INET, AF_INET6 or zero for both */
Simon Kelley376d48c2013-11-13 13:04:30 +0000390 struct addrlist *addr;
Simon Kelleyf2621c72007-04-29 19:47:21 +0100391 struct interface_name *next;
392};
393
Simon Kelley9e4abcb2004-01-22 19:47:41 +0000394union bigname {
395 char name[MAXDNAME];
396 union bigname *next; /* freelist */
397};
398
Simon Kelleyc3e0b9b2013-12-31 13:50:39 +0000399struct blockdata {
400 struct blockdata *next;
Simon Kelley7b4ad2e2012-04-04 14:05:35 +0100401 unsigned char key[KEYBLOCK_LEN];
402};
403
Simon Kelley9e4abcb2004-01-22 19:47:41 +0000404struct crec {
405 struct crec *next, *prev, *hash_next;
Simon Kelleycdbee9a2012-04-04 21:55:59 +0100406 /* union is 16 bytes when doing IPv6, 8 bytes on 32 bit machines without IPv6 */
Simon Kelleyfd9fa482004-10-21 20:24:00 +0100407 union {
408 struct all_addr addr;
409 struct {
Simon Kelleyd56a6042013-10-11 14:39:03 +0100410 union {
411 struct crec *cache;
412 struct interface_name *int_name;
413 } target;
Simon Kelley3f7483e2014-03-16 22:56:58 +0000414 unsigned int uid; /* 0 if union is interface-name */
Simon Kelleyfd9fa482004-10-21 20:24:00 +0100415 } cname;
Simon Kelley7b4ad2e2012-04-04 14:05:35 +0100416 struct {
Simon Kelley3a237152013-12-12 12:15:50 +0000417 struct blockdata *keydata;
Simon Kelley824202e2014-01-23 20:59:46 +0000418 unsigned short keylen, flags, keytag;
Simon Kelley7b4ad2e2012-04-04 14:05:35 +0100419 unsigned char algo;
Simon Kelley51ea3ca2014-01-22 19:31:38 +0000420 } key;
421 struct {
422 struct blockdata *keydata;
Simon Kelley824202e2014-01-23 20:59:46 +0000423 unsigned short keylen, keytag;
Simon Kelley51ea3ca2014-01-22 19:31:38 +0000424 unsigned char algo;
425 unsigned char digest;
426 } ds;
Simon Kelleyfd9fa482004-10-21 20:24:00 +0100427 } addr;
Simon Kelleycdbee9a2012-04-04 21:55:59 +0100428 time_t ttd; /* time to die */
Simon Kelley93be5b12015-12-15 12:04:40 +0000429 /* used as class if DNSKEY/DS, index to source for F_HOSTS */
Simon Kelley3f7483e2014-03-16 22:56:58 +0000430 unsigned int uid;
Simon Kelley9e4abcb2004-01-22 19:47:41 +0000431 unsigned short flags;
432 union {
433 char sname[SMALLDNAME];
434 union bigname *bname;
435 char *namep;
436 } name;
437};
438
Simon Kelley28866e92011-02-14 20:19:14 +0000439#define F_IMMORTAL (1u<<0)
440#define F_NAMEP (1u<<1)
441#define F_REVERSE (1u<<2)
442#define F_FORWARD (1u<<3)
443#define F_DHCP (1u<<4)
444#define F_NEG (1u<<5)
445#define F_HOSTS (1u<<6)
446#define F_IPV4 (1u<<7)
447#define F_IPV6 (1u<<8)
448#define F_BIGNAME (1u<<9)
449#define F_NXDOMAIN (1u<<10)
450#define F_CNAME (1u<<11)
Simon Kelley7b4ad2e2012-04-04 14:05:35 +0100451#define F_DNSKEY (1u<<12)
Simon Kelley28866e92011-02-14 20:19:14 +0000452#define F_CONFIG (1u<<13)
Simon Kelley7b4ad2e2012-04-04 14:05:35 +0100453#define F_DS (1u<<14)
454#define F_DNSSECOK (1u<<15)
455
Simon Kelley28866e92011-02-14 20:19:14 +0000456/* below here are only valid as args to log_query: cache
457 entries are limited to 16 bits */
458#define F_UPSTREAM (1u<<16)
459#define F_RRNAME (1u<<17)
460#define F_SERVER (1u<<18)
461#define F_QUERY (1u<<19)
Simon Kelley7b4ad2e2012-04-04 14:05:35 +0100462#define F_NOERR (1u<<20)
Simon Kelley4f7b3042012-11-28 21:27:02 +0000463#define F_AUTH (1u<<21)
Simon Kelley0fc2f312014-01-08 10:26:58 +0000464#define F_DNSSEC (1u<<22)
465#define F_KEYTAG (1u<<23)
466#define F_SECSTAT (1u<<24)
Simon Kelley12fae492014-02-04 22:03:06 +0000467#define F_NO_RR (1u<<25)
Wang Jian49752b92014-03-28 20:52:47 +0000468#define F_IPSET (1u<<26)
Simon Kelley93be5b12015-12-15 12:04:40 +0000469#define F_NOEXTRA (1u<<27)
Simon Kelley087eb762017-10-30 23:16:54 +0000470#define F_SERVFAIL (1u<<28)
Simon Kelley07ed5852018-05-04 21:52:22 +0100471#define F_RCODE (1u<<29)
Simon Kelley4f7b3042012-11-28 21:27:02 +0000472
Simon Kelley45d8a242018-07-17 21:01:14 +0100473#define UID_NONE 0
Simon Kelley19c51cf2014-03-18 22:38:30 +0000474/* Values of uid in crecs with F_CONFIG bit set. */
Simon Kelley45d8a242018-07-17 21:01:14 +0100475/* cname to uid SRC_INTERFACE are to interface names,
476 so use UID_NONE for that to eliminate clashes with
477 any other uid */
478#define SRC_INTERFACE UID_NONE
Simon Kelley19c51cf2014-03-18 22:38:30 +0000479#define SRC_CONFIG 1
480#define SRC_HOSTS 2
481#define SRC_AH 3
482
Simon Kelley9e4abcb2004-01-22 19:47:41 +0000483
484/* struct sockaddr is not large enough to hold any address,
Simon Kelleycdeda282006-03-16 20:16:06 +0000485 and specifically not big enough to hold an IPv6 address.
Simon Kelley9e4abcb2004-01-22 19:47:41 +0000486 Blech. Roll our own. */
487union mysockaddr {
488 struct sockaddr sa;
489 struct sockaddr_in in;
Simon Kelley7622fc02009-06-04 20:32:05 +0100490#if defined(HAVE_IPV6)
Simon Kelley9e4abcb2004-01-22 19:47:41 +0000491 struct sockaddr_in6 in6;
492#endif
493};
494
Simon Kelleybad7b872012-12-20 22:00:39 +0000495/* bits in flag param to IPv6 callbacks from iface_enumerate() */
496#define IFACE_TENTATIVE 1
497#define IFACE_DEPRECATED 2
Vladislav Grishenko4568a6f2013-08-19 16:07:07 +0100498#define IFACE_PERMANENT 4
Simon Kelleybad7b872012-12-20 22:00:39 +0000499
500
Simon Kelley0a852542005-03-23 20:28:59 +0000501#define SERV_FROM_RESOLV 1 /* 1 for servers from resolv, 0 for command line. */
502#define SERV_NO_ADDR 2 /* no server, this domain is local only */
503#define SERV_LITERAL_ADDRESS 4 /* addr is the answer, not the server */
Simon Kelley5aabfc72007-08-29 11:24:47 +0100504#define SERV_HAS_DOMAIN 8 /* server for one domain only */
505#define SERV_HAS_SOURCE 16 /* source address defined */
Simon Kelley0a852542005-03-23 20:28:59 +0000506#define SERV_FOR_NODOTS 32 /* server for names with no domain part only */
507#define SERV_WARNED_RECURSIVE 64 /* avoid warning spam */
Simon Kelley3d8df262005-08-29 12:19:27 +0100508#define SERV_FROM_DBUS 128 /* 1 if source is DBus */
509#define SERV_MARK 256 /* for mark-and-delete */
Simon Kelley9e4abcb2004-01-22 19:47:41 +0000510#define SERV_TYPE (SERV_HAS_DOMAIN | SERV_FOR_NODOTS)
Simon Kelley824af852008-02-12 20:43:05 +0000511#define SERV_COUNTED 512 /* workspace for log code */
Simon Kelley8ef5ada2010-06-03 19:42:45 +0100512#define SERV_USE_RESOLV 1024 /* forward this domain in the normal way */
513#define SERV_NO_REBIND 2048 /* inhibit dns-rebind protection */
Simon Kelley7b1eae42014-02-20 13:43:28 +0000514#define SERV_FROM_FILE 4096 /* read from --servers-file */
Simon Kelleyb5ea1cc2014-07-29 16:34:14 +0100515#define SERV_LOOP 8192 /* server causes forwarding loop */
Simon Kelley367341f2016-01-12 15:58:23 +0000516#define SERV_DO_DNSSEC 16384 /* Validate DNSSEC when using this server */
Simon Kelley361dfe52017-02-10 21:12:30 +0000517#define SERV_GOT_TCP 32768 /* Got some data from the TCP connection */
Simon Kelley9e4abcb2004-01-22 19:47:41 +0000518
519struct serverfd {
520 int fd;
521 union mysockaddr source_addr;
Simon Kelley824af852008-02-12 20:43:05 +0000522 char interface[IF_NAMESIZE+1];
Simon Kelley4441cf72018-04-10 21:39:54 +0100523 unsigned int ifindex, used, preallocated;
Simon Kelley9e4abcb2004-01-22 19:47:41 +0000524 struct serverfd *next;
525};
526
Simon Kelley1a6bca82008-07-11 11:11:42 +0100527struct randfd {
528 int fd;
529 unsigned short refcount, family;
530};
531
Simon Kelley9e4abcb2004-01-22 19:47:41 +0000532struct server {
533 union mysockaddr addr, source_addr;
Simon Kelley824af852008-02-12 20:43:05 +0000534 char interface[IF_NAMESIZE+1];
Simon Kelley16972692006-10-16 20:04:18 +0100535 struct serverfd *sfd;
Simon Kelley9e4abcb2004-01-22 19:47:41 +0000536 char *domain; /* set if this server only handles a domain. */
Simon Kelleya77cec82015-05-08 16:25:38 +0100537 int flags, tcpfd, edns_pktsz;
Simon Kelleyc1a4e252018-01-19 22:00:05 +0000538 time_t pktsz_reduced;
Simon Kelley824af852008-02-12 20:43:05 +0000539 unsigned int queries, failed_queries;
Simon Kelleyb5ea1cc2014-07-29 16:34:14 +0100540#ifdef HAVE_LOOP
541 u32 uid;
542#endif
Simon Kelley9e4abcb2004-01-22 19:47:41 +0000543 struct server *next;
544};
545
Jason A. Donenfeld13d86c72013-02-22 18:20:53 +0000546struct ipsets {
547 char **sets;
548 char *domain;
549 struct ipsets *next;
550};
551
Simon Kelley9e4abcb2004-01-22 19:47:41 +0000552struct irec {
553 union mysockaddr addr;
Simon Kelleyf6b7dc42005-01-23 12:06:08 +0000554 struct in_addr netmask; /* only valid for IPv4 */
Petr Menšíkad59f272017-03-17 17:22:19 +0000555 int tftp_ok, dhcp_ok, mtu, done, warned, dad, dns_auth, index, multicast_done, found, label;
Simon Kelley5d162f22012-12-20 14:55:46 +0000556 char *name;
Simon Kelley9e4abcb2004-01-22 19:47:41 +0000557 struct irec *next;
558};
559
Simon Kelley44a2a312004-03-10 20:04:35 +0000560struct listener {
Simon Kelley832af0b2007-01-21 20:01:28 +0000561 int fd, tcpfd, tftpfd, family;
Simon Kelley52d4abf2012-03-21 21:39:48 +0000562 struct irec *iface; /* only sometimes valid for non-wildcard */
Simon Kelley44a2a312004-03-10 20:04:35 +0000563 struct listener *next;
564};
565
Simon Kelley9e4abcb2004-01-22 19:47:41 +0000566/* interface and address parms from command line. */
567struct iname {
568 char *name;
569 union mysockaddr addr;
Simon Kelley4ce4f372012-06-14 11:50:45 +0100570 int used;
Simon Kelley9e4abcb2004-01-22 19:47:41 +0000571 struct iname *next;
572};
573
Ed Bardsleya7369be2015-08-05 21:17:18 +0100574/* subnet parameters from command line */
575struct mysubnet {
576 union mysockaddr addr;
577 int addr_used;
578 int mask;
579};
580
Simon Kelley9e4abcb2004-01-22 19:47:41 +0000581/* resolv-file parms from command-line */
582struct resolvc {
583 struct resolvc *next;
Simon Kelley3d8df262005-08-29 12:19:27 +0100584 int is_default, logged;
585 time_t mtime;
Simon Kelley9e4abcb2004-01-22 19:47:41 +0000586 char *name;
Simon Kelley04918052015-01-26 11:23:43 +0000587#ifdef HAVE_INOTIFY
Simon Kelley193de4a2014-12-10 17:32:16 +0000588 int wd; /* inotify watch descriptor */
589 char *file; /* pointer to file part if path */
590#endif
Simon Kelley9e4abcb2004-01-22 19:47:41 +0000591};
592
Simon Kelley5f4dc5c2015-01-20 20:51:02 +0000593/* adn-hosts parms from command-line (also dhcp-hostsfile and dhcp-optsfile and dhcp-hostsdir*/
Simon Kelley7622fc02009-06-04 20:32:05 +0100594#define AH_DIR 1
595#define AH_INACTIVE 2
Simon Kelley5f4dc5c2015-01-20 20:51:02 +0000596#define AH_WD_DONE 4
Simon Kelley70d18732015-01-31 19:59:29 +0000597#define AH_HOSTS 8
598#define AH_DHCP_HST 16
599#define AH_DHCP_OPT 32
Simon Kelleyfd9fa482004-10-21 20:24:00 +0100600struct hostsfile {
601 struct hostsfile *next;
Simon Kelley7622fc02009-06-04 20:32:05 +0100602 int flags;
Simon Kelleyfd9fa482004-10-21 20:24:00 +0100603 char *fname;
Simon Kelley04918052015-01-26 11:23:43 +0000604#ifdef HAVE_INOTIFY
Simon Kelley5f4dc5c2015-01-20 20:51:02 +0000605 int wd; /* inotify watch descriptor */
606#endif
Simon Kelley19c51cf2014-03-18 22:38:30 +0000607 unsigned int index; /* matches to cache entries for logging */
Simon Kelleyfd9fa482004-10-21 20:24:00 +0100608};
609
Simon Kelley6b173352018-05-08 18:32:14 +0100610/* packet-dump flags */
611#define DUMP_QUERY 0x0001
612#define DUMP_REPLY 0x0002
613#define DUMP_UP_QUERY 0x0004
614#define DUMP_UP_REPLY 0x0008
615#define DUMP_SEC_QUERY 0x0010
616#define DUMP_SEC_REPLY 0x0020
617#define DUMP_BOGUS 0x0040
618#define DUMP_SEC_BOGUS 0x0080
619
Simon Kelley3a237152013-12-12 12:15:50 +0000620
621/* DNSSEC status values. */
622#define STAT_SECURE 1
623#define STAT_INSECURE 2
624#define STAT_BOGUS 3
625#define STAT_NEED_DS 4
626#define STAT_NEED_KEY 5
Simon Kelley5d3b87a2014-01-20 11:57:23 +0000627#define STAT_TRUNCATED 6
Simon Kelley5107ace2014-02-23 10:48:32 +0000628#define STAT_SECURE_WILDCARD 7
Simon Kelley9a31b682015-12-15 10:20:39 +0000629#define STAT_OK 8
630#define STAT_ABANDONED 9
Simon Kelley3a237152013-12-12 12:15:50 +0000631
Simon Kelley28866e92011-02-14 20:19:14 +0000632#define FREC_NOREBIND 1
633#define FREC_CHECKING_DISABLED 2
Simon Kelleyed4c0762013-10-08 20:46:34 +0100634#define FREC_HAS_SUBNET 4
Simon Kelley9d633042013-12-13 15:36:55 +0000635#define FREC_DNSKEY_QUERY 8
636#define FREC_DS_QUERY 16
Simon Kelley83349b82014-02-10 21:02:01 +0000637#define FREC_AD_QUESTION 32
Simon Kelley613ad152014-02-25 23:02:28 +0000638#define FREC_DO_QUESTION 64
639#define FREC_ADDED_PHEADER 128
Simon Kelley9a31b682015-12-15 10:20:39 +0000640#define FREC_TEST_PKTSZ 256
Simon Kelleyd3a8b392015-12-23 12:27:37 +0000641#define FREC_HAS_EXTRADATA 512
Simon Kelley28866e92011-02-14 20:19:14 +0000642
Simon Kelley8a9be9e2014-01-25 23:17:21 +0000643#ifdef HAVE_DNSSEC
644#define HASH_SIZE 20 /* SHA-1 digest size */
645#else
646#define HASH_SIZE sizeof(int)
647#endif
648
Simon Kelley9e4abcb2004-01-22 19:47:41 +0000649struct frec {
650 union mysockaddr source;
Simon Kelley44a2a312004-03-10 20:04:35 +0000651 struct all_addr dest;
Simon Kelley832af0b2007-01-21 20:01:28 +0000652 struct server *sentto; /* NULL means free */
Simon Kelley1a6bca82008-07-11 11:11:42 +0100653 struct randfd *rfd4;
654#ifdef HAVE_IPV6
655 struct randfd *rfd6;
656#endif
Simon Kelleydfa666f2004-08-02 18:27:27 +0100657 unsigned int iface;
Simon Kelley9e4abcb2004-01-22 19:47:41 +0000658 unsigned short orig_id, new_id;
Simon Kelley25cf5e32015-01-09 15:53:03 +0000659 int log_id, fd, forwardall, flags;
Simon Kelley9e4abcb2004-01-22 19:47:41 +0000660 time_t time;
Simon Kelley8a9be9e2014-01-25 23:17:21 +0000661 unsigned char *hash[HASH_SIZE];
662#ifdef HAVE_DNSSEC
Simon Kelley7fa836e2014-02-10 20:11:24 +0000663 int class, work_counter;
Simon Kelley3a237152013-12-12 12:15:50 +0000664 struct blockdata *stash; /* Saved reply, whilst we validate */
Simon Kelley9a31b682015-12-15 10:20:39 +0000665 size_t stash_len;
Simon Kelley3a237152013-12-12 12:15:50 +0000666 struct frec *dependent; /* Query awaiting internally-generated DNSKEY or DS query */
667 struct frec *blocking_query; /* Query which is blocking us. */
668#endif
Simon Kelley9e4abcb2004-01-22 19:47:41 +0000669 struct frec *next;
670};
671
Simon Kelley40ef23b2012-03-13 21:59:28 +0000672/* flags in top of length field for DHCP-option tables */
673#define OT_ADDR_LIST 0x8000
674#define OT_RFC1035_NAME 0x4000
675#define OT_INTERNAL 0x2000
676#define OT_NAME 0x1000
677#define OT_CSTRING 0x0800
678#define OT_DEC 0x0400
Simon Kelley23245c02012-07-18 16:21:11 +0100679#define OT_TIME 0x0200
Simon Kelley40ef23b2012-03-13 21:59:28 +0000680
Simon Kelley16972692006-10-16 20:04:18 +0100681/* actions in the daemon->helper RPC */
682#define ACTION_DEL 1
683#define ACTION_OLD_HOSTNAME 2
684#define ACTION_OLD 3
685#define ACTION_ADD 4
Simon Kelleya9530962012-03-20 22:07:35 +0000686#define ACTION_TFTP 5
Simon Kelley33702ab2015-12-28 23:17:15 +0000687#define ACTION_ARP 6
Simon Kelleye6e751b2016-02-01 17:59:07 +0000688#define ACTION_ARP_DEL 7
Simon Kelley16972692006-10-16 20:04:18 +0100689
Simon Kelley4cb1b322012-02-06 14:30:41 +0000690#define LEASE_NEW 1 /* newly created */
691#define LEASE_CHANGED 2 /* modified */
692#define LEASE_AUX_CHANGED 4 /* CLID or expiry changed */
693#define LEASE_AUTH_NAME 8 /* hostname came from config, not from client */
694#define LEASE_USED 16 /* used this DHCPv6 transaction */
695#define LEASE_NA 32 /* IPv6 no-temporary lease */
696#define LEASE_TA 64 /* IPv6 temporary lease */
Simon Kelley353ae4d2012-03-19 20:07:51 +0000697#define LEASE_HAVE_HWADDR 128 /* Have set hwaddress */
Simon Kelley4cb1b322012-02-06 14:30:41 +0000698
Simon Kelley9e4abcb2004-01-22 19:47:41 +0000699struct dhcp_lease {
700 int clid_len; /* length of client identifier */
701 unsigned char *clid; /* clientid */
702 char *hostname, *fqdn; /* name from client-hostname option or config */
Simon Kelley16972692006-10-16 20:04:18 +0100703 char *old_hostname; /* hostname before it moved to another lease */
Simon Kelley4cb1b322012-02-06 14:30:41 +0000704 int flags;
Simon Kelley9e4abcb2004-01-22 19:47:41 +0000705 time_t expires; /* lease expiry */
Simon Kelley5e9e0ef2006-04-17 14:24:29 +0100706#ifdef HAVE_BROKEN_RTC
707 unsigned int length;
708#endif
Simon Kelley89500e32013-09-20 16:29:20 +0100709 int hwaddr_len, hwaddr_type;
710 unsigned char hwaddr[DHCP_CHADDR_MAX];
Simon Kelley1f15b812009-10-13 17:49:32 +0100711 struct in_addr addr, override, giaddr;
Simon Kelley316e2732010-01-22 20:16:09 +0000712 unsigned char *extradata;
713 unsigned int extradata_len, extradata_size;
Simon Kelley824af852008-02-12 20:43:05 +0000714 int last_interface;
Lung-Pin Changdc8a1b12014-07-02 10:48:05 +0800715 int new_interface; /* save possible originated interface */
716 int new_prefixlen; /* and its prefix length */
Simon Kelley353ae4d2012-03-19 20:07:51 +0000717#ifdef HAVE_DHCP6
Simon Kelley89500e32013-09-20 16:29:20 +0100718 struct in6_addr addr6;
719 int iaid;
Simon Kelley353ae4d2012-03-19 20:07:51 +0000720 struct slaac_address {
Simon Kelley875b8162013-12-17 17:40:32 +0000721 struct in6_addr addr;
Simon Kelley353ae4d2012-03-19 20:07:51 +0000722 time_t ping_time;
723 int backoff; /* zero -> confirmed */
724 struct slaac_address *next;
725 } *slaac_address;
Simon Kelley6f9aaa92013-04-10 10:25:26 +0100726 int vendorclass_count;
Simon Kelley353ae4d2012-03-19 20:07:51 +0000727#endif
Simon Kelley9e4abcb2004-01-22 19:47:41 +0000728 struct dhcp_lease *next;
729};
730
Simon Kelleya2226412004-05-13 20:27:08 +0100731struct dhcp_netid {
732 char *net;
733 struct dhcp_netid *next;
734};
735
Simon Kelley26128d22004-11-14 16:43:54 +0000736struct dhcp_netid_list {
737 struct dhcp_netid *list;
738 struct dhcp_netid_list *next;
739};
Simon Kelley16972692006-10-16 20:04:18 +0100740
Simon Kelley8ef5ada2010-06-03 19:42:45 +0100741struct tag_if {
742 struct dhcp_netid_list *set;
743 struct dhcp_netid *tag;
744 struct tag_if *next;
745};
746
Floris Bos503c6092017-04-09 23:07:13 +0100747struct delay_config {
748 int delay;
749 struct dhcp_netid *netid;
750 struct delay_config *next;
751};
752
Simon Kelley9009d742008-11-14 20:04:27 +0000753struct hwaddr_config {
754 int hwaddr_len, hwaddr_type;
755 unsigned char hwaddr[DHCP_CHADDR_MAX];
756 unsigned int wildcard_mask;
757 struct hwaddr_config *next;
758};
759
Simon Kelley9e4abcb2004-01-22 19:47:41 +0000760struct dhcp_config {
Simon Kelley33820b72004-04-03 21:10:00 +0100761 unsigned int flags;
Simon Kelley9e4abcb2004-01-22 19:47:41 +0000762 int clid_len; /* length of client identifier */
763 unsigned char *clid; /* clientid */
Simon Kelley9009d742008-11-14 20:04:27 +0000764 char *hostname, *domain;
Simon Kelley8ef5ada2010-06-03 19:42:45 +0100765 struct dhcp_netid_list *netid;
Simon Kelley52b92f42012-01-22 16:05:15 +0000766#ifdef HAVE_DHCP6
767 struct in6_addr addr6;
768#endif
Simon Kelley9e4abcb2004-01-22 19:47:41 +0000769 struct in_addr addr;
Simon Kelley849a8352006-06-09 21:02:31 +0100770 time_t decline_time;
Simon Kelley9009d742008-11-14 20:04:27 +0000771 unsigned int lease_time;
772 struct hwaddr_config *hwaddr;
Simon Kelley9e4abcb2004-01-22 19:47:41 +0000773 struct dhcp_config *next;
774};
775
Simon Kelley4cb1b322012-02-06 14:30:41 +0000776#define have_config(config, mask) ((config) && ((config)->flags & (mask)))
777
Simon Kelley0a852542005-03-23 20:28:59 +0000778#define CONFIG_DISABLE 1
779#define CONFIG_CLID 2
Simon Kelley0a852542005-03-23 20:28:59 +0000780#define CONFIG_TIME 8
781#define CONFIG_NAME 16
782#define CONFIG_ADDR 32
Simon Kelley0a852542005-03-23 20:28:59 +0000783#define CONFIG_NOCLID 128
Simon Kelley849a8352006-06-09 21:02:31 +0100784#define CONFIG_FROM_ETHERS 256 /* entry created by /etc/ethers */
785#define CONFIG_ADDR_HOSTS 512 /* address added by from /etc/hosts */
786#define CONFIG_DECLINED 1024 /* address declined by client */
Simon Kelley5aabfc72007-08-29 11:24:47 +0100787#define CONFIG_BANK 2048 /* from dhcp hosts file */
Simon Kelley52b92f42012-01-22 16:05:15 +0000788#define CONFIG_ADDR6 4096
Simon Kelley30393102013-01-17 16:34:16 +0000789#define CONFIG_WILDCARD 8192
Simon Kelley33820b72004-04-03 21:10:00 +0100790
Simon Kelley9e4abcb2004-01-22 19:47:41 +0000791struct dhcp_opt {
Simon Kelleycdeda282006-03-16 20:16:06 +0000792 int opt, len, flags;
Simon Kelley73a08a22009-02-05 20:28:08 +0000793 union {
794 int encap;
795 unsigned int wildcard_mask;
796 unsigned char *vendor_class;
797 } u;
798 unsigned char *val;
Simon Kelley26128d22004-11-14 16:43:54 +0000799 struct dhcp_netid *netid;
Simon Kelley9e4abcb2004-01-22 19:47:41 +0000800 struct dhcp_opt *next;
Simon Kelleya84fa1d2004-04-23 22:21:21 +0100801};
802
Simon Kelleycdeda282006-03-16 20:16:06 +0000803#define DHOPT_ADDR 1
804#define DHOPT_STRING 2
Simon Kelley6b010842007-02-12 20:32:07 +0000805#define DHOPT_ENCAPSULATE 4
Simon Kelley73a08a22009-02-05 20:28:08 +0000806#define DHOPT_ENCAP_MATCH 8
Simon Kelley6b010842007-02-12 20:32:07 +0000807#define DHOPT_FORCE 16
Simon Kelley824af852008-02-12 20:43:05 +0000808#define DHOPT_BANK 32
Simon Kelley73a08a22009-02-05 20:28:08 +0000809#define DHOPT_ENCAP_DONE 64
810#define DHOPT_MATCH 128
811#define DHOPT_VENDOR 256
812#define DHOPT_HEX 512
Simon Kelley7622fc02009-06-04 20:32:05 +0100813#define DHOPT_VENDOR_MATCH 1024
Simon Kelley316e2732010-01-22 20:16:09 +0000814#define DHOPT_RFC3925 2048
Simon Kelley7de060b2011-08-26 17:24:52 +0100815#define DHOPT_TAGOK 4096
Simon Kelley4cb1b322012-02-06 14:30:41 +0000816#define DHOPT_ADDR6 8192
Simon Kelleycdeda282006-03-16 20:16:06 +0000817
Simon Kelley26128d22004-11-14 16:43:54 +0000818struct dhcp_boot {
Simon Kelley7de060b2011-08-26 17:24:52 +0100819 char *file, *sname, *tftp_sname;
Simon Kelley26128d22004-11-14 16:43:54 +0000820 struct in_addr next_server;
821 struct dhcp_netid *netid;
822 struct dhcp_boot *next;
823};
824
Simon Kelley7622fc02009-06-04 20:32:05 +0100825struct pxe_service {
826 unsigned short CSA, type;
Simon Kelley751d6f42012-02-10 15:24:51 +0000827 char *menu, *basename, *sname;
Simon Kelley7622fc02009-06-04 20:32:05 +0100828 struct in_addr server;
829 struct dhcp_netid *netid;
830 struct pxe_service *next;
831};
832
Simon Kelleyf2621c72007-04-29 19:47:21 +0100833#define MATCH_VENDOR 1
834#define MATCH_USER 2
835#define MATCH_CIRCUIT 3
836#define MATCH_REMOTE 4
837#define MATCH_SUBSCRIBER 5
838
Josh Soref730c6742017-02-06 16:14:04 +0000839/* vendorclass, userclass, remote-id or circuit-id */
Simon Kelleya84fa1d2004-04-23 22:21:21 +0100840struct dhcp_vendor {
Simon Kelleya5c72ab2012-02-10 13:42:47 +0000841 int len, match_type;
842 unsigned int enterprise;
Simon Kelleya2226412004-05-13 20:27:08 +0100843 char *data;
844 struct dhcp_netid netid;
Simon Kelleya84fa1d2004-04-23 22:21:21 +0100845 struct dhcp_vendor *next;
846};
Simon Kelley9e4abcb2004-01-22 19:47:41 +0000847
Simon Kelleycdeda282006-03-16 20:16:06 +0000848struct dhcp_mac {
849 unsigned int mask;
850 int hwaddr_len, hwaddr_type;
851 unsigned char hwaddr[DHCP_CHADDR_MAX];
852 struct dhcp_netid netid;
853 struct dhcp_mac *next;
854};
855
Simon Kelley832af0b2007-01-21 20:01:28 +0000856struct dhcp_bridge {
857 char iface[IF_NAMESIZE];
858 struct dhcp_bridge *alias, *next;
859};
Simon Kelley832af0b2007-01-21 20:01:28 +0000860
Simon Kelley9009d742008-11-14 20:04:27 +0000861struct cond_domain {
Simon Kelley48fd1c42013-04-25 09:49:38 +0100862 char *domain, *prefix;
Simon Kelley9009d742008-11-14 20:04:27 +0000863 struct in_addr start, end;
Simon Kelleyd74942a2012-02-07 20:51:56 +0000864#ifdef HAVE_IPV6
865 struct in6_addr start6, end6;
866#endif
Simon Kelley6b2b5642018-03-10 18:12:04 +0000867 int is6, indexed;
Simon Kelley9009d742008-11-14 20:04:27 +0000868 struct cond_domain *next;
Simon Kelley1f776932012-12-16 19:46:08 +0000869};
Simon Kelley9009d742008-11-14 20:04:27 +0000870
Simon Kelleya6ebfac2013-03-06 20:52:35 +0000871#ifdef OPTION6_PREFIX_CLASS
872struct prefix_class {
873 int class;
Simon Kelleyc6309242013-03-07 20:59:28 +0000874 struct dhcp_netid tag;
Simon Kelleya6ebfac2013-03-06 20:52:35 +0000875 struct prefix_class *next;
876};
877#endif
878
Simon Kelleyc4cd95d2013-10-10 20:58:11 +0100879struct ra_interface {
880 char *name;
Vladislav Grishenko6ec5f5c2017-04-24 22:34:45 +0100881 char *mtu_name;
David Flamand005c46d2017-04-11 11:49:54 +0100882 int interval, lifetime, prio, mtu;
Simon Kelleyc4cd95d2013-10-10 20:58:11 +0100883 struct ra_interface *next;
884};
885
Simon Kelley9e4abcb2004-01-22 19:47:41 +0000886struct dhcp_context {
Simon Kelleyfeba5c12004-07-27 20:28:58 +0100887 unsigned int lease_time, addr_epoch;
Simon Kelley0a852542005-03-23 20:28:59 +0000888 struct in_addr netmask, broadcast;
889 struct in_addr local, router;
Simon Kelleya84fa1d2004-04-23 22:21:21 +0100890 struct in_addr start, end; /* range of available addresses */
Simon Kelleyc72daea2012-01-05 21:33:27 +0000891#ifdef HAVE_DHCP6
892 struct in6_addr start6, end6; /* range of available addresses */
Simon Kelleye44ddca2012-02-18 17:08:50 +0000893 struct in6_addr local6;
Simon Kelley353ae4d2012-03-19 20:07:51 +0000894 int prefix, if_index;
Simon Kelleyef1a94a2013-07-26 13:59:03 +0100895 unsigned int valid, preferred, saved_valid;
896 time_t ra_time, ra_short_period_start, address_lost_time;
Simon Kelley1f776932012-12-16 19:46:08 +0000897 char *template_interface;
Simon Kelleyc72daea2012-01-05 21:33:27 +0000898#endif
Simon Kelley0a852542005-03-23 20:28:59 +0000899 int flags;
Simon Kelleycdeda282006-03-16 20:16:06 +0000900 struct dhcp_netid netid, *filter;
Simon Kelley36717ee2004-09-20 19:20:58 +0100901 struct dhcp_context *next, *current;
Simon Kelley9e4abcb2004-01-22 19:47:41 +0000902};
903
Simon Kelley89500e32013-09-20 16:29:20 +0100904#define CONTEXT_STATIC (1u<<0)
905#define CONTEXT_NETMASK (1u<<1)
906#define CONTEXT_BRDCAST (1u<<2)
907#define CONTEXT_PROXY (1u<<3)
Simon Kelley7ea3d3f2014-04-25 22:04:05 +0100908#define CONTEXT_RA_ROUTER (1u<<4)
Simon Kelley89500e32013-09-20 16:29:20 +0100909#define CONTEXT_RA_DONE (1u<<5)
910#define CONTEXT_RA_NAME (1u<<6)
911#define CONTEXT_RA_STATELESS (1u<<7)
912#define CONTEXT_DHCP (1u<<8)
913#define CONTEXT_DEPRECATE (1u<<9)
914#define CONTEXT_TEMPLATE (1u<<10) /* create contexts using addresses */
915#define CONTEXT_CONSTRUCTED (1u<<11)
916#define CONTEXT_GC (1u<<12)
917#define CONTEXT_RA (1u<<13)
918#define CONTEXT_CONF_USED (1u<<14)
919#define CONTEXT_USED (1u<<15)
Simon Kelley376d48c2013-11-13 13:04:30 +0000920#define CONTEXT_OLD (1u<<16)
921#define CONTEXT_V6 (1u<<17)
Neil Jerram2fd5bc92015-06-10 22:13:06 +0100922#define CONTEXT_RA_OFF_LINK (1u<<18)
Simon Kelleyef1a94a2013-07-26 13:59:03 +0100923
Simon Kelley3d8df262005-08-29 12:19:27 +0100924struct ping_result {
925 struct in_addr addr;
926 time_t time;
Simon Kelley7de060b2011-08-26 17:24:52 +0100927 unsigned int hash;
Simon Kelley3d8df262005-08-29 12:19:27 +0100928 struct ping_result *next;
929};
Simon Kelley9e4abcb2004-01-22 19:47:41 +0000930
Simon Kelley832af0b2007-01-21 20:01:28 +0000931struct tftp_file {
932 int refcount, fd;
933 off_t size;
Simon Kelley5aabfc72007-08-29 11:24:47 +0100934 dev_t dev;
935 ino_t inode;
Simon Kelley832af0b2007-01-21 20:01:28 +0000936 char filename[];
937};
938
939struct tftp_transfer {
940 int sockfd;
941 time_t timeout;
942 int backoff;
Simon Kelley9e038942008-05-30 20:06:34 +0100943 unsigned int block, blocksize, expansion;
944 off_t offset;
Simon Kelley28866e92011-02-14 20:19:14 +0000945 union mysockaddr peer;
Simon Kelley9e038942008-05-30 20:06:34 +0100946 char opt_blocksize, opt_transize, netascii, carrylf;
Simon Kelley832af0b2007-01-21 20:01:28 +0000947 struct tftp_file *file;
948 struct tftp_transfer *next;
949};
950
Simon Kelley8ef5ada2010-06-03 19:42:45 +0100951struct addr_list {
952 struct in_addr addr;
953 struct addr_list *next;
954};
955
Simon Kelley8ef5ada2010-06-03 19:42:45 +0100956struct tftp_prefix {
957 char *interface;
958 char *prefix;
Stefan Tomanek30d08792015-03-31 22:32:11 +0100959 int missing;
Simon Kelley8ef5ada2010-06-03 19:42:45 +0100960 struct tftp_prefix *next;
961};
962
Simon Kelleyff7eea22013-09-04 18:01:38 +0100963struct dhcp_relay {
964 struct all_addr local, server;
965 char *interface; /* Allowable interface for replies from server, and dest for IPv6 multicast */
966 int iface_index; /* working - interface in which requests arrived, for return */
967 struct dhcp_relay *current, *next;
968};
Simon Kelley8ef5ada2010-06-03 19:42:45 +0100969
Simon Kelley5aabfc72007-08-29 11:24:47 +0100970extern struct daemon {
Simon Kelley3be34542004-09-11 19:12:13 +0100971 /* datastuctures representing the command-line and
972 config file arguments. All set (including defaults)
973 in option.c */
974
Simon Kelley28866e92011-02-14 20:19:14 +0000975 unsigned int options, options2;
Simon Kelley3be34542004-09-11 19:12:13 +0100976 struct resolvc default_resolv, *resolv_files;
Simon Kelley9009d742008-11-14 20:04:27 +0000977 time_t last_resolv;
Simon Kelley7b1eae42014-02-20 13:43:28 +0000978 char *servers_file;
Simon Kelley0a852542005-03-23 20:28:59 +0000979 struct mx_srv_record *mxnames;
Simon Kelley1a6bca82008-07-11 11:11:42 +0100980 struct naptr *naptr;
Simon Kelley9f7f3b12012-05-28 21:39:57 +0100981 struct txt_record *txt, *rr;
Simon Kelley832af0b2007-01-21 20:01:28 +0000982 struct ptr_record *ptr;
Simon Kelleye759d422012-03-16 13:18:57 +0000983 struct host_record *host_records, *host_records_tail;
Simon Kelley9009d742008-11-14 20:04:27 +0000984 struct cname *cnames;
Simon Kelley4f7b3042012-11-28 21:27:02 +0000985 struct auth_zone *auth_zones;
Simon Kelleyf2621c72007-04-29 19:47:21 +0100986 struct interface_name *int_names;
Simon Kelley3be34542004-09-11 19:12:13 +0100987 char *mxtarget;
Ed Bardsleya7369be2015-08-05 21:17:18 +0100988 struct mysubnet *add_subnet4;
989 struct mysubnet *add_subnet6;
990 char *lease_file;
Simon Kelley9e038942008-05-30 20:06:34 +0100991 char *username, *groupname, *scriptuser;
Simon Kelleyc72daea2012-01-05 21:33:27 +0000992 char *luascript;
Simon Kelley429798f2012-12-10 20:45:53 +0000993 char *authserver, *hostmaster;
994 struct iname *authinterface;
Simon Kelleye1ff4192012-12-09 17:08:47 +0000995 struct name_list *secondary_forward_server;
Simon Kelley1a6bca82008-07-11 11:11:42 +0100996 int group_set, osport;
Simon Kelley3be34542004-09-11 19:12:13 +0100997 char *domain_suffix;
Simon Kelley2bb73af2013-04-24 17:38:19 +0100998 struct cond_domain *cond_domain, *synth_domains;
Simon Kelley3be34542004-09-11 19:12:13 +0100999 char *runfile;
Simon Kelley7cebd202006-05-06 14:13:33 +01001000 char *lease_change_command;
Simon Kelley2937f8a2013-07-29 19:49:07 +01001001 struct iname *if_names, *if_addrs, *if_except, *dhcp_except, *auth_peers, *tftp_interfaces;
Glen Huang32fc6db2014-12-27 15:28:12 +00001002 struct bogus_addr *bogus_addr, *ignore_addr;
Simon Kelley3be34542004-09-11 19:12:13 +01001003 struct server *servers;
Jason A. Donenfeld13d86c72013-02-22 18:20:53 +00001004 struct ipsets *ipsets;
Simon Kelley849a8352006-06-09 21:02:31 +01001005 int log_fac; /* log facility */
Simon Kelleyf2621c72007-04-29 19:47:21 +01001006 char *log_file; /* optional log file */
1007 int max_logs; /* queue limit */
Simon Kelley208b65c2006-08-05 21:41:37 +01001008 int cachesize, ftabsize;
Hans Dedecker926332a2016-01-23 10:48:12 +00001009 int port, query_port, min_port, max_port;
Simon Kelley832e47b2016-02-24 21:24:45 +00001010 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 +00001011 char *dns_client_id;
Simon Kelleyfd9fa482004-10-21 20:24:00 +01001012 struct hostsfile *addn_hosts;
Simon Kelley1f776932012-12-16 19:46:08 +00001013 struct dhcp_context *dhcp, *dhcp6;
Simon Kelleyc4cd95d2013-10-10 20:58:11 +01001014 struct ra_interface *ra_interfaces;
Simon Kelley3be34542004-09-11 19:12:13 +01001015 struct dhcp_config *dhcp_conf;
Simon Kelley3634c542012-02-08 14:22:37 +00001016 struct dhcp_opt *dhcp_opts, *dhcp_match, *dhcp_opts6, *dhcp_match6;
Simon Kelley3be34542004-09-11 19:12:13 +01001017 struct dhcp_vendor *dhcp_vendors;
Simon Kelleycdeda282006-03-16 20:16:06 +00001018 struct dhcp_mac *dhcp_macs;
Simon Kelley26128d22004-11-14 16:43:54 +00001019 struct dhcp_boot *boot_config;
Simon Kelley7622fc02009-06-04 20:32:05 +01001020 struct pxe_service *pxe_services;
Simon Kelley8ef5ada2010-06-03 19:42:45 +01001021 struct tag_if *tag_if;
1022 struct addr_list *override_relays;
Simon Kelleyff7eea22013-09-04 18:01:38 +01001023 struct dhcp_relay *relay4, *relay6;
Floris Bos503c6092017-04-09 23:07:13 +01001024 struct delay_config *delay_conf;
Simon Kelley8ef5ada2010-06-03 19:42:45 +01001025 int override;
Simon Kelley1f15b812009-10-13 17:49:32 +01001026 int enable_pxe;
Simon Kelley1f776932012-12-16 19:46:08 +00001027 int doing_ra, doing_dhcp6;
Simon Kelley8ef5ada2010-06-03 19:42:45 +01001028 struct dhcp_netid_list *dhcp_ignore, *dhcp_ignore_names, *dhcp_gen_names;
1029 struct dhcp_netid_list *force_broadcast, *bootp_dynamic;
Simon Kelley70d18732015-01-31 19:59:29 +00001030 struct hostsfile *dhcp_hosts_file, *dhcp_opts_file, *dynamic_dirs;
Simon Kelleybec366b2016-02-24 22:03:26 +00001031 int dhcp_max, tftp_max, tftp_mtu;
Simon Kelley9e038942008-05-30 20:06:34 +01001032 int dhcp_server_port, dhcp_client_port;
Simon Kelley824af852008-02-12 20:43:05 +00001033 int start_tftp_port, end_tftp_port;
Simon Kelley3be34542004-09-11 19:12:13 +01001034 unsigned int min_leasetime;
1035 struct doctor *doctors;
1036 unsigned short edns_pktsz;
Simon Kelley824af852008-02-12 20:43:05 +00001037 char *tftp_prefix;
Simon Kelley8ef5ada2010-06-03 19:42:45 +01001038 struct tftp_prefix *if_prefix; /* per-interface TFTP prefixes */
Simon Kelley8b372702012-03-09 17:45:10 +00001039 unsigned int duid_enterprise, duid_config_len;
1040 unsigned char *duid_config;
Simon Kelleyad094272012-08-10 17:10:54 +01001041 char *dbus_name;
Simon Kelley6b173352018-05-08 18:32:14 +01001042 char *dump_file;
1043 int dump_mask;
Simon Kelley4f7b3042012-11-28 21:27:02 +00001044 unsigned long soa_sn, soa_refresh, soa_retry, soa_expiry;
Julian Kornbergeraba8bbb2018-07-21 21:55:08 +01001045 u32 metrics[__METRIC_MAX];
Simon Kelleyc6309242013-03-07 20:59:28 +00001046#ifdef OPTION6_PREFIX_CLASS
1047 struct prefix_class *prefix_classes;
1048#endif
Simon Kelley0fc2f312014-01-08 10:26:58 +00001049#ifdef HAVE_DNSSEC
Simon Kelleyee415862014-02-11 11:07:22 +00001050 struct ds_config *ds;
Simon Kelleyf6e62e22015-03-01 18:17:54 +00001051 char *timestamp_file;
Simon Kelley0fc2f312014-01-08 10:26:58 +00001052#endif
Simon Kelley3be34542004-09-11 19:12:13 +01001053
1054 /* globally used stuff for DNS */
1055 char *packet; /* packet buffer */
Simon Kelley0a852542005-03-23 20:28:59 +00001056 int packet_buff_sz; /* size of above */
Simon Kelley3be34542004-09-11 19:12:13 +01001057 char *namebuff; /* MAXDNAME size buffer */
Simon Kelleyc3e0b9b2013-12-31 13:50:39 +00001058#ifdef HAVE_DNSSEC
1059 char *keyname; /* MAXDNAME size buffer */
Simon Kelley5107ace2014-02-23 10:48:32 +00001060 char *workspacename; /* ditto */
Simon Kelley373e9172017-12-01 22:40:56 +00001061 char *rr_status; /* flags for individual RRs */
1062 int rr_status_sz;
Simon Kelley6b173352018-05-08 18:32:14 +01001063 int dnssec_no_time_check;
1064 int back_to_the_future;
Simon Kelleyc3e0b9b2013-12-31 13:50:39 +00001065#endif
Simon Kelley1a6bca82008-07-11 11:11:42 +01001066 struct frec *frec_list;
Simon Kelley3be34542004-09-11 19:12:13 +01001067 struct serverfd *sfds;
Simon Kelley3d8df262005-08-29 12:19:27 +01001068 struct irec *interfaces;
Simon Kelley3be34542004-09-11 19:12:13 +01001069 struct listener *listeners;
1070 struct server *last_server;
Simon Kelley1f15b812009-10-13 17:49:32 +01001071 time_t forwardtime;
1072 int forwardcount;
Simon Kelleycdeda282006-03-16 20:16:06 +00001073 struct server *srv_save; /* Used for resend on DoD */
1074 size_t packet_len; /* " " */
Simon Kelley3927da42008-07-20 15:10:39 +01001075 struct randfd *rfd_save; /* " " */
Simon Kelley7622fc02009-06-04 20:32:05 +01001076 pid_t tcp_pids[MAX_PROCS];
Simon Kelley1a6bca82008-07-11 11:11:42 +01001077 struct randfd randomsocks[RANDOM_SOCKS];
Simon Kelley316e2732010-01-22 20:16:09 +00001078 int v6pktinfo;
Simon Kelleyc8a80482014-03-05 14:29:54 +00001079 struct addrlist *interface_addrs; /* list of all addresses/prefix lengths associated with all local interfaces */
Simon Kelley25cf5e32015-01-09 15:53:03 +00001080 int log_id, log_display_id; /* ids of transactions for logging */
1081 union mysockaddr *log_source_addr;
Simon Kelley1a6bca82008-07-11 11:11:42 +01001082
Simon Kelley3be34542004-09-11 19:12:13 +01001083 /* DHCP state */
Simon Kelley316e2732010-01-22 20:16:09 +00001084 int dhcpfd, helperfd, pxefd;
Simon Kelley04918052015-01-26 11:23:43 +00001085#ifdef HAVE_INOTIFY
1086 int inotifyfd;
1087#endif
Simon Kelley7622fc02009-06-04 20:32:05 +01001088#if defined(HAVE_LINUX_NETWORK)
Simon Kelley04918052015-01-26 11:23:43 +00001089 int netlinkfd;
Simon Kelley7622fc02009-06-04 20:32:05 +01001090#elif defined(HAVE_BSD_NETWORK)
Simon Kelley1ee9be42013-12-09 16:50:19 +00001091 int dhcp_raw_fd, dhcp_icmp_fd, routefd;
Simon Kelley0a852542005-03-23 20:28:59 +00001092#endif
Simon Kelley5e9e0ef2006-04-17 14:24:29 +01001093 struct iovec dhcp_packet;
Simon Kelley8ef5ada2010-06-03 19:42:45 +01001094 char *dhcp_buff, *dhcp_buff2, *dhcp_buff3;
Simon Kelley3d8df262005-08-29 12:19:27 +01001095 struct ping_result *ping_results;
Simon Kelleycdeda282006-03-16 20:16:06 +00001096 FILE *lease_stream;
Simon Kelley832af0b2007-01-21 20:01:28 +00001097 struct dhcp_bridge *bridges;
Simon Kelleyc72daea2012-01-05 21:33:27 +00001098#ifdef HAVE_DHCP6
1099 int duid_len;
1100 unsigned char *duid;
1101 struct iovec outpacket;
Simon Kelleyc5ad4e72012-02-24 16:06:20 +00001102 int dhcp6fd, icmp6fd;
Simon Kelleyc72daea2012-01-05 21:33:27 +00001103#endif
Simon Kelley3d8df262005-08-29 12:19:27 +01001104 /* DBus stuff */
Simon Kelley3d8df262005-08-29 12:19:27 +01001105 /* void * here to avoid depending on dbus headers outside dbus.c */
1106 void *dbus;
Simon Kelley832af0b2007-01-21 20:01:28 +00001107#ifdef HAVE_DBUS
Simon Kelley3d8df262005-08-29 12:19:27 +01001108 struct watch *watches;
1109#endif
1110
Simon Kelley832af0b2007-01-21 20:01:28 +00001111 /* TFTP stuff */
Simon Kelleya9530962012-03-20 22:07:35 +00001112 struct tftp_transfer *tftp_trans, *tftp_done_trans;
Simon Kelley824af852008-02-12 20:43:05 +00001113
Simon Kelleyc72daea2012-01-05 21:33:27 +00001114 /* utility string buffer, hold max sized IP address as string */
1115 char *addrbuff;
Simon Kelley25cf5e32015-01-09 15:53:03 +00001116 char *addrbuff2; /* only allocated when OPT_EXTRALOG */
Simon Kelleyc72daea2012-01-05 21:33:27 +00001117
Simon Kelley6b173352018-05-08 18:32:14 +01001118#ifdef HAVE_DUMPFILE
1119 /* file for packet dumps. */
1120 int dumpfd;
1121#endif
Simon Kelley5aabfc72007-08-29 11:24:47 +01001122} *daemon;
Simon Kelley3be34542004-09-11 19:12:13 +01001123
Simon Kelley9e4abcb2004-01-22 19:47:41 +00001124/* cache.c */
Simon Kelley5aabfc72007-08-29 11:24:47 +01001125void cache_init(void);
Simon Kelley45d8a242018-07-17 21:01:14 +01001126void next_uid(struct crec *crecp);
Simon Kelley28866e92011-02-14 20:19:14 +00001127void log_query(unsigned int flags, char *name, struct all_addr *addr, char *arg);
Simon Kelley19c51cf2014-03-18 22:38:30 +00001128char *record_source(unsigned int index);
Simon Kelley610e7822014-02-06 14:45:17 +00001129char *querystr(char *desc, unsigned short type);
Simon Kelley9e4abcb2004-01-22 19:47:41 +00001130struct crec *cache_find_by_addr(struct crec *crecp,
1131 struct all_addr *addr, time_t now,
Simon Kelley12fae492014-02-04 22:03:06 +00001132 unsigned int prot);
Simon Kelley9e4abcb2004-01-22 19:47:41 +00001133struct crec *cache_find_by_name(struct crec *crecp,
Simon Kelley12fae492014-02-04 22:03:06 +00001134 char *name, time_t now, unsigned int prot);
Simon Kelley9e4abcb2004-01-22 19:47:41 +00001135void cache_end_insert(void);
1136void cache_start_insert(void);
Simon Kelleyfd9fa482004-10-21 20:24:00 +01001137struct crec *cache_insert(char *name, struct all_addr *addr,
1138 time_t now, unsigned long ttl, unsigned short flags);
Simon Kelley7622fc02009-06-04 20:32:05 +01001139void cache_reload(void);
Simon Kelley4cb1b322012-02-06 14:30:41 +00001140void cache_add_dhcp_entry(char *host_name, int prot, struct all_addr *host_address, time_t ttd);
Simon Kelley7de060b2011-08-26 17:24:52 +01001141struct in_addr a_record_from_hosts(char *name, time_t now);
Simon Kelley9e4abcb2004-01-22 19:47:41 +00001142void cache_unhash_dhcp(void);
Simon Kelley5aabfc72007-08-29 11:24:47 +01001143void dump_cache(time_t now);
Kevin Darbyshire-Bryant7ac9ae12016-09-09 20:52:08 +01001144#ifndef NO_ID
Simon Kelleyfec216d2014-03-27 20:54:34 +00001145int cache_make_stat(struct txt_record *t);
Kevin Darbyshire-Bryant7ac9ae12016-09-09 20:52:08 +01001146#endif
Simon Kelley9e4abcb2004-01-22 19:47:41 +00001147char *cache_get_name(struct crec *crecp);
Simon Kelleyd56a6042013-10-11 14:39:03 +01001148char *cache_get_cname_target(struct crec *crecp);
Simon Kelleyb75e9362012-12-07 11:50:41 +00001149struct crec *cache_enumerate(int init);
Simon Kelley70d18732015-01-31 19:59:29 +00001150int read_hostsfile(char *filename, unsigned int index, int cache_size,
1151 struct crec **rhash, int hashsz);
Simon Kelley98c098b2014-01-08 17:31:16 +00001152
1153/* blockdata.c */
Simon Kelley7b4ad2e2012-04-04 14:05:35 +01001154#ifdef HAVE_DNSSEC
Simon Kelley82e3f452014-01-31 21:05:48 +00001155void blockdata_init(void);
Simon Kelleyc2207682014-01-08 18:04:20 +00001156void blockdata_report(void);
Simon Kelley3a237152013-12-12 12:15:50 +00001157struct blockdata *blockdata_alloc(char *data, size_t len);
Simon Kelley86bec2d2014-01-13 21:31:20 +00001158void *blockdata_retrieve(struct blockdata *block, size_t len, void *data);
Simon Kelley3a237152013-12-12 12:15:50 +00001159void blockdata_free(struct blockdata *blocks);
Simon Kelley7b4ad2e2012-04-04 14:05:35 +01001160#endif
Simon Kelley9e4abcb2004-01-22 19:47:41 +00001161
Simon Kelley2bb73af2013-04-24 17:38:19 +01001162/* domain.c */
1163char *get_domain(struct in_addr addr);
1164#ifdef HAVE_IPV6
1165char *get_domain6(struct in6_addr *addr);
1166#endif
1167int is_name_synthetic(int flags, char *name, struct all_addr *addr);
1168int is_rev_synth(int flag, struct all_addr *addr, char *name);
1169
Simon Kelley9e4abcb2004-01-22 19:47:41 +00001170/* rfc1035.c */
Giovanni Bajof53c79c2012-04-22 14:30:53 +02001171int extract_name(struct dns_header *header, size_t plen, unsigned char **pp,
1172 char *name, int isExtract, int extrabytes);
Giovanni Bajo32f82c62012-04-28 01:01:16 +02001173unsigned char *skip_name(unsigned char *ansp, struct dns_header *header, size_t plen, int extrabytes);
Giovanni Bajof53c79c2012-04-22 14:30:53 +02001174unsigned char *skip_questions(struct dns_header *header, size_t plen);
Simon Kelley5107ace2014-02-23 10:48:32 +00001175unsigned char *skip_section(unsigned char *ansp, int count, struct dns_header *header, size_t plen);
Simon Kelley572b41e2011-02-18 18:11:18 +00001176unsigned int extract_request(struct dns_header *header, size_t qlen,
Simon Kelleyc1bb8502004-08-11 18:40:17 +01001177 char *name, unsigned short *typep);
Simon Kelley572b41e2011-02-18 18:11:18 +00001178size_t setup_reply(struct dns_header *header, size_t qlen,
Simon Kelley28866e92011-02-14 20:19:14 +00001179 struct all_addr *addrp, unsigned int flags,
Rosen Penev50a28412017-06-27 22:27:02 +01001180 unsigned long ttl);
1181int extract_addresses(struct dns_header *header, size_t qlen, char *name,
1182 time_t now, char **ipsets, int is_sign, int check_rebind,
Simon Kelley373e9172017-12-01 22:40:56 +00001183 int no_cache_dnssec, int secure, int *doctored);
Simon Kelley572b41e2011-02-18 18:11:18 +00001184size_t answer_request(struct dns_header *header, char *limit, size_t qlen,
Simon Kelley83349b82014-02-10 21:02:01 +00001185 struct in_addr local_addr, struct in_addr local_netmask,
Simon Kelleyfa14bec2015-12-20 17:12:16 +00001186 time_t now, int ad_reqd, int do_bit, int have_pseudoheader);
Simon Kelley572b41e2011-02-18 18:11:18 +00001187int check_for_bogus_wildcard(struct dns_header *header, size_t qlen, char *name,
Rosen Penev50a28412017-06-27 22:27:02 +01001188 struct bogus_addr *baddr, time_t now);
Glen Huang32fc6db2014-12-27 15:28:12 +00001189int check_for_ignored_address(struct dns_header *header, size_t qlen, struct bogus_addr *baddr);
Simon Kelley5aabfc72007-08-29 11:24:47 +01001190int check_for_local_domain(char *name, time_t now);
Rosen Penev50a28412017-06-27 22:27:02 +01001191unsigned int questions_crc(struct dns_header *header, size_t plen, char *name);
Simon Kelley572b41e2011-02-18 18:11:18 +00001192size_t resize_packet(struct dns_header *header, size_t plen,
Simon Kelleycdeda282006-03-16 20:16:06 +00001193 unsigned char *pheader, size_t hlen);
Simon Kelley4f7b3042012-11-28 21:27:02 +00001194int add_resource_record(struct dns_header *header, char *limit, int *truncp,
Simon Kelleyb75e9362012-12-07 11:50:41 +00001195 int nameoffset, unsigned char **pp, unsigned long ttl,
Simon Kelleye1ff4192012-12-09 17:08:47 +00001196 int *offset, unsigned short type, unsigned short class, char *format, ...);
Simon Kelley4f7b3042012-11-28 21:27:02 +00001197unsigned char *skip_questions(struct dns_header *header, size_t plen);
1198int extract_name(struct dns_header *header, size_t plen, unsigned char **pp,
1199 char *name, int isExtract, int extrabytes);
1200int in_arpa_name_2_addr(char *namein, struct all_addr *addrp);
Simon Kelleydc27e142013-10-16 13:09:53 +01001201int private_net(struct in_addr addr, int ban_localhost);
Simon Kelley4f7b3042012-11-28 21:27:02 +00001202
1203/* auth.c */
Simon Kelley4820dce2012-12-18 18:30:30 +00001204#ifdef HAVE_AUTH
Simon Kelley19b16892013-10-20 10:19:39 +01001205size_t answer_auth(struct dns_header *header, char *limit, size_t qlen,
Simon Kelleyfa14bec2015-12-20 17:12:16 +00001206 time_t now, union mysockaddr *peer_addr, int local_query,
1207 int do_bit, int have_pseudoheader);
Simon Kelleyb485ed92013-10-18 22:00:39 +01001208int in_zone(struct auth_zone *zone, char *name, char **cut);
Simon Kelley4820dce2012-12-18 18:30:30 +00001209#endif
Simon Kelley9e4abcb2004-01-22 19:47:41 +00001210
Giovanni Bajof53c79c2012-04-22 14:30:53 +02001211/* dnssec.c */
Simon Kelley33702ab2015-12-28 23:17:15 +00001212size_t dnssec_generate_query(struct dns_header *header, unsigned char *end, char *name, int class, int type, union mysockaddr *addr, int edns_pktsz);
Rosen Penev50a28412017-06-27 22:27:02 +01001213int 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 +00001214int 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 +00001215int dnssec_validate_reply(time_t now, struct dns_header *header, size_t plen, char *name, char *keyname, int *class,
Simon Kelley373e9172017-12-01 22:40:56 +00001216 int check_unsigned, int *neganswer, int *nons);
Rosen Penev50a28412017-06-27 22:27:02 +01001217int dnskey_keytag(int alg, int flags, unsigned char *key, int keylen);
Simon Kelley613ad152014-02-25 23:02:28 +00001218size_t filter_rrsigs(struct dns_header *header, size_t plen);
Simon Kelley8a9be9e2014-01-25 23:17:21 +00001219unsigned char* hash_questions(struct dns_header *header, size_t plen, char *name);
Simon Kelley360f2512015-03-07 18:28:06 +00001220int setup_timestamp(void);
Giovanni Bajof53c79c2012-04-22 14:30:53 +02001221
Simon Kelleyad9c6f02017-10-27 22:13:49 +01001222/* crypto.c */
1223const struct nettle_hash *hash_find(char *name);
1224int hash_init(const struct nettle_hash *hash, void **ctxp, unsigned char **digestp);
Simon Kelleyad9c6f02017-10-27 22:13:49 +01001225int verify(struct blockdata *key_data, unsigned int key_len, unsigned char *sig, size_t sig_len,
1226 unsigned char *digest, size_t digest_len, int algo);
1227char *ds_digest_name(int digest);
1228char *algo_digest_name(int algo);
1229char *nsec3_digest_name(int digest);
1230
Simon Kelley9e4abcb2004-01-22 19:47:41 +00001231/* util.c */
Simon Kelley1a6bca82008-07-11 11:11:42 +01001232void rand_init(void);
Simon Kelley9e4abcb2004-01-22 19:47:41 +00001233unsigned short rand16(void);
Simon Kelleyb5ea1cc2014-07-29 16:34:14 +01001234u32 rand32(void);
Simon Kelley6586e832013-11-07 14:20:13 +00001235u64 rand64(void);
Rosen Penev50a28412017-06-27 22:27:02 +01001236int legal_hostname(char *name);
1237char *canonicalise(char *in, int *nomem);
Simon Kelley0549c732017-09-25 18:17:11 +01001238unsigned char *do_rfc1035_name(unsigned char *p, char *sval, char *limit);
Simon Kelley0a852542005-03-23 20:28:59 +00001239void *safe_malloc(size_t size);
Simon Kelley1a6bca82008-07-11 11:11:42 +01001240void safe_pipe(int *fd, int read_noblock);
Simon Kelley5aabfc72007-08-29 11:24:47 +01001241void *whine_malloc(size_t size);
Simon Kelley9e4abcb2004-01-22 19:47:41 +00001242int sa_len(union mysockaddr *addr);
1243int sockaddr_isequal(union mysockaddr *s1, union mysockaddr *s2);
Simon Kelleyc99df932012-10-12 13:39:04 +01001244int hostname_isequal(const char *a, const char *b);
Simon Kelley5e9e0ef2006-04-17 14:24:29 +01001245time_t dnsmasq_time(void);
Lung-Pin Changdc8a1b12014-07-02 10:48:05 +08001246int netmask_length(struct in_addr mask);
Simon Kelleya84fa1d2004-04-23 22:21:21 +01001247int is_same_net(struct in_addr a, struct in_addr b, struct in_addr mask);
Simon Kelleyc72daea2012-01-05 21:33:27 +00001248#ifdef HAVE_IPV6
1249int is_same_net6(struct in6_addr *a, struct in6_addr *b, int prefixlen);
Simon Kelley52b92f42012-01-22 16:05:15 +00001250u64 addr6part(struct in6_addr *addr);
1251void setaddr6part(struct in6_addr *addr, u64 host);
Simon Kelleyc72daea2012-01-05 21:33:27 +00001252#endif
Simon Kelleyff841eb2015-03-11 21:36:30 +00001253int retry_send(ssize_t rc);
Simon Kelley0a852542005-03-23 20:28:59 +00001254void prettyprint_time(char *buf, unsigned int t);
Simon Kelley3d8df262005-08-29 12:19:27 +01001255int prettyprint_addr(union mysockaddr *addr, char *buf);
Simon Kelley0a852542005-03-23 20:28:59 +00001256int parse_hex(char *in, unsigned char *out, int maxlen,
Simon Kelleycdeda282006-03-16 20:16:06 +00001257 unsigned int *wildcard_mask, int *mac_type);
Simon Kelley5e9e0ef2006-04-17 14:24:29 +01001258int memcmp_masked(unsigned char *a, unsigned char *b, int len,
1259 unsigned int mask);
1260int expand_buf(struct iovec *iov, size_t size);
Simon Kelley5aabfc72007-08-29 11:24:47 +01001261char *print_mac(char *buff, unsigned char *mac, int len);
Simon Kelley16972692006-10-16 20:04:18 +01001262int read_write(int fd, unsigned char *packet, int size, int rw);
Simon Kelley7cebd202006-05-06 14:13:33 +01001263
Simon Kelley49333cb2013-03-15 20:30:51 +00001264int wildcard_match(const char* wildcard, const char* match);
Neil Jerram70772c92014-06-11 21:22:40 +01001265int wildcard_matchn(const char* wildcard, const char* match, int num);
Simon Kelley49333cb2013-03-15 20:30:51 +00001266
Simon Kelleyf2621c72007-04-29 19:47:21 +01001267/* log.c */
Simon Kelley5aabfc72007-08-29 11:24:47 +01001268void die(char *message, char *arg1, int exit_code);
Simon Kelley1a6bca82008-07-11 11:11:42 +01001269int log_start(struct passwd *ent_pw, int errfd);
Simon Kelley5aabfc72007-08-29 11:24:47 +01001270int log_reopen(char *log_file);
Rosen Penevcbd29e52017-06-27 22:29:51 +01001271
Simon Kelleyf2621c72007-04-29 19:47:21 +01001272void my_syslog(int priority, const char *format, ...);
Rosen Penevcbd29e52017-06-27 22:29:51 +01001273
Simon Kelleyb842bc92015-07-12 21:09:11 +01001274void set_log_writer(void);
1275void check_log_writer(int force);
Simon Kelley5aabfc72007-08-29 11:24:47 +01001276void flush_log(void);
Simon Kelleyf2621c72007-04-29 19:47:21 +01001277
Simon Kelley9e4abcb2004-01-22 19:47:41 +00001278/* option.c */
Simon Kelley5aabfc72007-08-29 11:24:47 +01001279void read_opts (int argc, char **argv, char *compile_opts);
Simon Kelley4cb1b322012-02-06 14:30:41 +00001280char *option_string(int prot, unsigned int opt, unsigned char *val,
1281 int opt_len, char *buf, int buf_len);
Simon Kelley824af852008-02-12 20:43:05 +00001282void reread_dhcp(void);
Simon Kelley7b1eae42014-02-20 13:43:28 +00001283void read_servers_file(void);
Simon Kelley28866e92011-02-14 20:19:14 +00001284void set_option_bool(unsigned int opt);
Simon Kelley2b5bae92012-06-26 16:55:23 +01001285void reset_option_bool(unsigned int opt);
Simon Kelley28866e92011-02-14 20:19:14 +00001286struct hostsfile *expand_filelist(struct hostsfile *list);
Simon Kelleyfaafb3f2012-09-20 14:17:39 +01001287char *parse_server(char *arg, union mysockaddr *addr,
1288 union mysockaddr *source_addr, char *interface, int *flags);
Simon Kelley70d18732015-01-31 19:59:29 +00001289int option_read_dynfile(char *file, int flags);
1290
Simon Kelley9e4abcb2004-01-22 19:47:41 +00001291/* forward.c */
Simon Kelley1a6bca82008-07-11 11:11:42 +01001292void reply_query(int fd, int family, time_t now);
Simon Kelley5aabfc72007-08-29 11:24:47 +01001293void receive_query(struct listener *listen, time_t now);
1294unsigned char *tcp_request(int confd, time_t now,
Simon Kelley4f7b3042012-11-28 21:27:02 +00001295 union mysockaddr *local_addr, struct in_addr netmask, int auth_dns);
Simon Kelley5aabfc72007-08-29 11:24:47 +01001296void server_gone(struct server *server);
Simon Kelley3a237152013-12-12 12:15:50 +00001297struct frec *get_new_frec(time_t now, int *wait, int force);
Simon Kelley29689cf2012-03-22 14:01:00 +00001298int send_from(int fd, int nowild, char *packet, size_t len,
Simon Kelleyc72daea2012-01-05 21:33:27 +00001299 union mysockaddr *to, struct all_addr *source,
Simon Kelley50303b12012-04-04 22:13:17 +01001300 unsigned int iface);
Rosen Penev50a28412017-06-27 22:27:02 +01001301void resend_query(void);
Simon Kelleyb5ea1cc2014-07-29 16:34:14 +01001302struct randfd *allocate_rfd(int family);
1303void free_rfd(struct randfd *rfd);
Simon Kelley9e4abcb2004-01-22 19:47:41 +00001304
1305/* network.c */
Simon Kelley7622fc02009-06-04 20:32:05 +01001306int indextoname(int fd, int index, char *name);
Simon Kelley9d6918d2017-10-13 17:55:09 +01001307int local_bind(int fd, union mysockaddr *addr, char *intname, unsigned int ifindex, int is_tcp);
Simon Kelley1a6bca82008-07-11 11:11:42 +01001308int random_sock(int family);
Simon Kelley824af852008-02-12 20:43:05 +00001309void pre_allocate_sfds(void);
Simon Kelley5aabfc72007-08-29 11:24:47 +01001310int reload_servers(char *fname);
Simon Kelleyd68c2ca2014-02-18 22:30:30 +00001311void mark_servers(int flag);
1312void cleanup_servers(void);
1313void add_update_server(int flags,
1314 union mysockaddr *addr,
1315 union mysockaddr *source_addr,
1316 const char *interface,
1317 const char *domain);
Simon Kelley5aabfc72007-08-29 11:24:47 +01001318void check_servers(void);
Simon Kelley115ac3e2013-05-20 11:28:32 +01001319int enumerate_interfaces(int reset);
Simon Kelley74c95c22011-10-19 09:33:39 +01001320void create_wildcard_listeners(void);
Rosen Penev50a28412017-06-27 22:27:02 +01001321void create_bound_listeners(int dienow);
Simon Kelleydc27e142013-10-16 13:09:53 +01001322void warn_bound_listeners(void);
Petr Menšíkad59f272017-03-17 17:22:19 +00001323void warn_wild_labels(void);
Simon Kelleyf7029f52013-11-21 15:09:09 +00001324void warn_int_names(void);
Simon Kelley74c95c22011-10-19 09:33:39 +01001325int is_dad_listeners(void);
Rosen Penev50a28412017-06-27 22:27:02 +01001326int iface_check(int family, struct all_addr *addr, char *name, int *auth);
Simon Kelleye25db1f2013-01-29 22:10:26 +00001327int loopback_exception(int fd, int family, struct all_addr *addr, char *name);
Simon Kelley3f2873d2013-05-14 11:28:47 +01001328int label_exception(int index, int family, struct all_addr *addr);
Simon Kelley7cebd202006-05-06 14:13:33 +01001329int fix_fd(int fd);
Simon Kelley22ce5502013-01-22 13:53:04 +00001330int tcp_interface(int fd, int af);
Simon Kelleyc72daea2012-01-05 21:33:27 +00001331#ifdef HAVE_IPV6
1332int set_ipv6pktinfo(int fd);
1333#endif
Simon Kelley5d162f22012-12-20 14:55:46 +00001334#ifdef HAVE_DHCP6
1335void join_multicast(int dienow);
1336#endif
Simon Kelley1ee9be42013-12-09 16:50:19 +00001337#if defined(HAVE_LINUX_NETWORK) || defined(HAVE_BSD_NETWORK)
1338void newaddress(time_t now);
1339#endif
1340
Simon Kelley3be34542004-09-11 19:12:13 +01001341
Simon Kelley9e4abcb2004-01-22 19:47:41 +00001342/* dhcp.c */
Simon Kelley7622fc02009-06-04 20:32:05 +01001343#ifdef HAVE_DHCP
Simon Kelley5aabfc72007-08-29 11:24:47 +01001344void dhcp_init(void);
Simon Kelley316e2732010-01-22 20:16:09 +00001345void dhcp_packet(time_t now, int pxe_fd);
Simon Kelley824af852008-02-12 20:43:05 +00001346struct dhcp_context *address_available(struct dhcp_context *context,
Rosen Penev50a28412017-06-27 22:27:02 +01001347 struct in_addr taddr,
Simon Kelley824af852008-02-12 20:43:05 +00001348 struct dhcp_netid *netids);
1349struct dhcp_context *narrow_context(struct dhcp_context *context,
1350 struct in_addr taddr,
1351 struct dhcp_netid *netids);
Simon Kelley5ce3e762017-04-28 22:14:20 +01001352struct ping_result *do_icmp_ping(time_t now, struct in_addr addr,
Simon Kelleyc7be0162017-05-10 22:21:53 +01001353 unsigned int hash, int loopback);
Simon Kelley8ef5ada2010-06-03 19:42:45 +01001354int address_allocate(struct dhcp_context *context,
Simon Kelleycdeda282006-03-16 20:16:06 +00001355 struct in_addr *addrp, unsigned char *hwaddr, int hw_len,
Simon Kelleyc7be0162017-05-10 22:21:53 +01001356 struct dhcp_netid *netids, time_t now, int loopback);
Simon Kelley5aabfc72007-08-29 11:24:47 +01001357void dhcp_read_ethers(void);
Simon Kelleydfa666f2004-08-02 18:27:27 +01001358struct dhcp_config *config_find_by_address(struct dhcp_config *configs, struct in_addr addr);
Simon Kelley5aabfc72007-08-29 11:24:47 +01001359char *host_from_dns(struct in_addr addr);
Simon Kelley7622fc02009-06-04 20:32:05 +01001360#endif
Simon Kelley3be34542004-09-11 19:12:13 +01001361
Simon Kelley9e4abcb2004-01-22 19:47:41 +00001362/* lease.c */
Simon Kelley7622fc02009-06-04 20:32:05 +01001363#ifdef HAVE_DHCP
Simon Kelley5aabfc72007-08-29 11:24:47 +01001364void lease_update_file(time_t now);
Simon Kelley353ae4d2012-03-19 20:07:51 +00001365void lease_update_dns(int force);
Simon Kelley5aabfc72007-08-29 11:24:47 +01001366void lease_init(time_t now);
Simon Kelley52b92f42012-01-22 16:05:15 +00001367struct dhcp_lease *lease4_allocate(struct in_addr addr);
Simon Kelleyc72daea2012-01-05 21:33:27 +00001368#ifdef HAVE_DHCP6
Simon Kelley4cb1b322012-02-06 14:30:41 +00001369struct dhcp_lease *lease6_allocate(struct in6_addr *addrp, int lease_type);
1370struct dhcp_lease *lease6_find(unsigned char *clid, int clid_len,
1371 int lease_type, int iaid, struct in6_addr *addr);
Simon Kelleya6ebfac2013-03-06 20:52:35 +00001372void lease6_reset(void);
1373struct dhcp_lease *lease6_find_by_client(struct dhcp_lease *first, int lease_type, unsigned char *clid, int clid_len, int iaid);
Simon Kelley52b92f42012-01-22 16:05:15 +00001374struct dhcp_lease *lease6_find_by_addr(struct in6_addr *net, int prefix, u64 addr);
Simon Kelley07933802012-02-14 20:55:25 +00001375u64 lease_find_max_addr6(struct dhcp_context *context);
Simon Kelley353ae4d2012-03-19 20:07:51 +00001376void lease_ping_reply(struct in6_addr *sender, unsigned char *packet, char *interface);
Simon Kelley0c050242012-12-22 22:13:19 +00001377void lease_update_slaac(time_t now);
Simon Kelley89500e32013-09-20 16:29:20 +01001378void lease_set_iaid(struct dhcp_lease *lease, int iaid);
Simon Kelley3511a922013-11-07 10:28:11 +00001379void lease_make_duid(time_t now);
Simon Kelleyc72daea2012-01-05 21:33:27 +00001380#endif
Nicolas Cavallari64bcff12015-04-28 21:55:18 +01001381void lease_set_hwaddr(struct dhcp_lease *lease, const unsigned char *hwaddr,
1382 const unsigned char *clid, int hw_len, int hw_type,
1383 int clid_len, time_t now, int force);
1384void lease_set_hostname(struct dhcp_lease *lease, const char *name, int auth, char *domain, char *config_domain);
Simon Kelley5e9e0ef2006-04-17 14:24:29 +01001385void lease_set_expires(struct dhcp_lease *lease, unsigned int len, time_t now);
Simon Kelley353ae4d2012-03-19 20:07:51 +00001386void lease_set_interface(struct dhcp_lease *lease, int interface, time_t now);
Simon Kelleycdeda282006-03-16 20:16:06 +00001387struct dhcp_lease *lease_find_by_client(unsigned char *hwaddr, int hw_len, int hw_type,
Simon Kelley0a852542005-03-23 20:28:59 +00001388 unsigned char *clid, int clid_len);
Simon Kelley9e4abcb2004-01-22 19:47:41 +00001389struct dhcp_lease *lease_find_by_addr(struct in_addr addr);
Simon Kelley7de060b2011-08-26 17:24:52 +01001390struct in_addr lease_find_max_addr(struct dhcp_context *context);
Simon Kelley9e4abcb2004-01-22 19:47:41 +00001391void lease_prune(struct dhcp_lease *target, time_t now);
Simon Kelley5aabfc72007-08-29 11:24:47 +01001392void lease_update_from_configs(void);
1393int do_script_run(time_t now);
1394void rerun_scripts(void);
Simon Kelley8b372702012-03-09 17:45:10 +00001395void lease_find_interfaces(time_t now);
Simon Kelleyceae00d2012-02-09 21:28:14 +00001396#ifdef HAVE_SCRIPT
1397void lease_add_extradata(struct dhcp_lease *lease, unsigned char *data,
1398 unsigned int len, int delim);
1399#endif
Simon Kelley7622fc02009-06-04 20:32:05 +01001400#endif
Simon Kelleya84fa1d2004-04-23 22:21:21 +01001401
Simon Kelley9e4abcb2004-01-22 19:47:41 +00001402/* rfc2131.c */
Simon Kelley7622fc02009-06-04 20:32:05 +01001403#ifdef HAVE_DHCP
Simon Kelley824af852008-02-12 20:43:05 +00001404size_t dhcp_reply(struct dhcp_context *context, char *iface_name, int int_index,
Simon Kelleyc7be0162017-05-10 22:21:53 +01001405 size_t sz, time_t now, int unicast_dest, int loopback,
Rosen Penev50a28412017-06-27 22:27:02 +01001406 int *is_inform, int pxe, struct in_addr fallback, time_t recvtime);
Simon Kelley9009d742008-11-14 20:04:27 +00001407unsigned char *extended_hwaddr(int hwtype, int hwlen, unsigned char *hwaddr,
1408 int clid_len, unsigned char *clid, int *len_out);
Simon Kelley7622fc02009-06-04 20:32:05 +01001409#endif
Simon Kelley3be34542004-09-11 19:12:13 +01001410
1411/* dnsmasq.c */
Simon Kelley7622fc02009-06-04 20:32:05 +01001412#ifdef HAVE_DHCP
Simon Kelley5e9e0ef2006-04-17 14:24:29 +01001413int make_icmp_sock(void);
Simon Kelley5aabfc72007-08-29 11:24:47 +01001414int icmp_ping(struct in_addr addr);
Floris Bos503c6092017-04-09 23:07:13 +01001415int delay_dhcp(time_t start, int sec, int fd, uint32_t addr, unsigned short id);
Simon Kelley7622fc02009-06-04 20:32:05 +01001416#endif
Simon Kelley47a95162014-07-08 22:22:02 +01001417void queue_event(int event);
Simon Kelley353ae4d2012-03-19 20:07:51 +00001418void send_alarm(time_t event, time_t now);
Simon Kelleyc72daea2012-01-05 21:33:27 +00001419void send_event(int fd, int event, int data, char *msg);
Simon Kelley5aabfc72007-08-29 11:24:47 +01001420void clear_cache_and_reload(time_t now);
Simon Kelley44a2a312004-03-10 20:04:35 +00001421
Simon Kelley0a852542005-03-23 20:28:59 +00001422/* netlink.c */
Simon Kelley5e9e0ef2006-04-17 14:24:29 +01001423#ifdef HAVE_LINUX_NETWORK
Simon Kelley5aabfc72007-08-29 11:24:47 +01001424void netlink_init(void);
Simon Kelleya0358e52014-06-07 13:38:48 +01001425void netlink_multicast(void);
Simon Kelley5e9e0ef2006-04-17 14:24:29 +01001426#endif
1427
1428/* bpf.c */
Simon Kelley824af852008-02-12 20:43:05 +00001429#ifdef HAVE_BSD_NETWORK
Simon Kelley5aabfc72007-08-29 11:24:47 +01001430void init_bpf(void);
1431void send_via_bpf(struct dhcp_packet *mess, size_t len,
Simon Kelley5e9e0ef2006-04-17 14:24:29 +01001432 struct in_addr iface_addr, struct ifreq *ifr);
Simon Kelley1ee9be42013-12-09 16:50:19 +00001433void route_init(void);
Simon Kelleya0358e52014-06-07 13:38:48 +01001434void route_sock(void);
Simon Kelley0a852542005-03-23 20:28:59 +00001435#endif
Simon Kelley3d8df262005-08-29 12:19:27 +01001436
Simon Kelley824af852008-02-12 20:43:05 +00001437/* bpf.c or netlink.c */
Simon Kelley28866e92011-02-14 20:19:14 +00001438int iface_enumerate(int family, void *parm, int (callback)());
Simon Kelley824af852008-02-12 20:43:05 +00001439
Simon Kelley3d8df262005-08-29 12:19:27 +01001440/* dbus.c */
1441#ifdef HAVE_DBUS
Simon Kelley5aabfc72007-08-29 11:24:47 +01001442char *dbus_init(void);
Simon Kelleyb842bc92015-07-12 21:09:11 +01001443void check_dbus_listeners(void);
1444void set_dbus_listeners(void);
Simon Kelley316e2732010-01-22 20:16:09 +00001445# ifdef HAVE_DHCP
Simon Kelley1f15b812009-10-13 17:49:32 +01001446void emit_dbus_signal(int action, struct dhcp_lease *lease, char *hostname);
Simon Kelley316e2732010-01-22 20:16:09 +00001447# endif
Simon Kelley3d8df262005-08-29 12:19:27 +01001448#endif
Simon Kelley16972692006-10-16 20:04:18 +01001449
Julian Kornbergercaf4d572018-07-21 21:45:03 +01001450/* ubus.c */
1451#ifdef HAVE_UBUS
1452void set_ubus_listeners(void);
1453void check_ubus_listeners(void);
1454void ubus_event_bcast(const char *type, const char *mac, const char *ip, const char *name, const char *interface);
1455#endif
1456
Jason A. Donenfeld13d86c72013-02-22 18:20:53 +00001457/* ipset.c */
1458#ifdef HAVE_IPSET
1459void ipset_init(void);
1460int add_to_ipset(const char *setname, const struct all_addr *ipaddr, int flags, int remove);
1461#endif
1462
Simon Kelley16972692006-10-16 20:04:18 +01001463/* helper.c */
Simon Kelley00683012012-03-19 20:29:55 +00001464#if defined(HAVE_SCRIPT)
Simon Kelley1a6bca82008-07-11 11:11:42 +01001465int create_helper(int event_fd, int err_fd, uid_t uid, gid_t gid, long max_fd);
Simon Kelley5aabfc72007-08-29 11:24:47 +01001466void helper_write(void);
1467void queue_script(int action, struct dhcp_lease *lease,
1468 char *hostname, time_t now);
Simon Kelleya9530962012-03-20 22:07:35 +00001469#ifdef HAVE_TFTP
1470void queue_tftp(off_t file_len, char *filename, union mysockaddr *peer);
1471#endif
Simon Kelley33702ab2015-12-28 23:17:15 +00001472void queue_arp(int action, unsigned char *mac, int maclen,
1473 int family, struct all_addr *addr);
Simon Kelley16972692006-10-16 20:04:18 +01001474int helper_buf_empty(void);
Simon Kelley5aabfc72007-08-29 11:24:47 +01001475#endif
Simon Kelley832af0b2007-01-21 20:01:28 +00001476
1477/* tftp.c */
1478#ifdef HAVE_TFTP
Simon Kelley5aabfc72007-08-29 11:24:47 +01001479void tftp_request(struct listener *listen, time_t now);
Simon Kelleyb842bc92015-07-12 21:09:11 +01001480void check_tftp_listeners(time_t now);
Simon Kelleya9530962012-03-20 22:07:35 +00001481int do_tftp_script_run(void);
Simon Kelley832af0b2007-01-21 20:01:28 +00001482#endif
Simon Kelley7de060b2011-08-26 17:24:52 +01001483
1484/* conntrack.c */
1485#ifdef HAVE_CONNTRACK
1486int get_incoming_mark(union mysockaddr *peer_addr, struct all_addr *local_addr,
1487 int istcp, unsigned int *markp);
1488#endif
Simon Kelleyc72daea2012-01-05 21:33:27 +00001489
Simon Kelley52b92f42012-01-22 16:05:15 +00001490/* dhcp6.c */
1491#ifdef HAVE_DHCP6
1492void dhcp6_init(void);
1493void dhcp6_packet(time_t now);
Simon Kelley6586e832013-11-07 14:20:13 +00001494struct dhcp_context *address6_allocate(struct dhcp_context *context, unsigned char *clid, int clid_len, int temp_addr,
Simon Kelleyc6309242013-03-07 20:59:28 +00001495 int iaid, int serial, struct dhcp_netid *netids, int plain_range, struct in6_addr *ans);
Simon Kelleyde92b472013-03-15 18:25:10 +00001496int config_valid(struct dhcp_config *config, struct dhcp_context *context, struct in6_addr *addr);
Simon Kelley52b92f42012-01-22 16:05:15 +00001497struct dhcp_context *address6_available(struct dhcp_context *context,
1498 struct in6_addr *taddr,
Simon Kelleyc6309242013-03-07 20:59:28 +00001499 struct dhcp_netid *netids,
1500 int plain_range);
Simon Kelley37c9cce2013-01-09 19:51:04 +00001501struct dhcp_context *address6_valid(struct dhcp_context *context,
1502 struct in6_addr *taddr,
Simon Kelleyc6309242013-03-07 20:59:28 +00001503 struct dhcp_netid *netids,
1504 int plain_range);
Simon Kelleyceae00d2012-02-09 21:28:14 +00001505struct dhcp_config *config_find_by_address6(struct dhcp_config *configs, struct in6_addr *net,
1506 int prefix, u64 addr);
Simon Kelley4cb1b322012-02-06 14:30:41 +00001507void make_duid(time_t now);
Simon Kelley1f776932012-12-16 19:46:08 +00001508void dhcp_construct_contexts(time_t now);
Simon Kelley8939c952013-09-25 11:49:34 +01001509void get_client_mac(struct in6_addr *client, int iface, unsigned char *mac,
Simon Kelley33702ab2015-12-28 23:17:15 +00001510 unsigned int *maclenp, unsigned int *mactypep, time_t now);
Simon Kelley52b92f42012-01-22 16:05:15 +00001511#endif
Simon Kelley8939c952013-09-25 11:49:34 +01001512
Simon Kelleyc72daea2012-01-05 21:33:27 +00001513/* rfc3315.c */
1514#ifdef HAVE_DHCP6
Simon Kelley1d0f91c2012-03-12 11:56:22 +00001515unsigned short dhcp6_reply(struct dhcp_context *context, int interface, char *iface_name,
Simon Kelleyc3a04082014-01-11 22:18:19 +00001516 struct in6_addr *fallback, struct in6_addr *ll_addr, struct in6_addr *ula_addr,
1517 size_t sz, struct in6_addr *client_addr, time_t now);
Simon Kelley33702ab2015-12-28 23:17:15 +00001518void relay_upstream6(struct dhcp_relay *relay, ssize_t sz, struct in6_addr *peer_address,
1519 u32 scope_id, time_t now);
Simon Kelleyff7eea22013-09-04 18:01:38 +01001520
1521unsigned short relay_reply6( struct sockaddr_in6 *peer, ssize_t sz, char *arrival_interface);
Simon Kelleyc72daea2012-01-05 21:33:27 +00001522#endif
Simon Kelley4cb1b322012-02-06 14:30:41 +00001523
1524/* dhcp-common.c */
Simon Kelleyceae00d2012-02-09 21:28:14 +00001525#ifdef HAVE_DHCP
Simon Kelley4cb1b322012-02-06 14:30:41 +00001526void dhcp_common_init(void);
1527ssize_t recv_dhcp_packet(int fd, struct msghdr *msg);
Rosen Penev50a28412017-06-27 22:27:02 +01001528struct dhcp_netid *run_tag_if(struct dhcp_netid *tags);
Simon Kelley4cb1b322012-02-06 14:30:41 +00001529struct dhcp_netid *option_filter(struct dhcp_netid *tags, struct dhcp_netid *context_tags,
1530 struct dhcp_opt *opts);
Rosen Penev50a28412017-06-27 22:27:02 +01001531int match_netid(struct dhcp_netid *check, struct dhcp_netid *pool, int tagnotneeded);
Simon Kelley4cb1b322012-02-06 14:30:41 +00001532char *strip_hostname(char *hostname);
1533void log_tags(struct dhcp_netid *netid, u32 xid);
Simon Kelley3634c542012-02-08 14:22:37 +00001534int match_bytes(struct dhcp_opt *o, unsigned char *p, int len);
Simon Kelleyceae00d2012-02-09 21:28:14 +00001535void dhcp_update_configs(struct dhcp_config *configs);
Simon Kelley40ef23b2012-03-13 21:59:28 +00001536void display_opts(void);
Simon Kelleybd08ae62013-04-19 10:22:06 +01001537int lookup_dhcp_opt(int prot, char *name);
1538int lookup_dhcp_len(int prot, int val);
Simon Kelley40ef23b2012-03-13 21:59:28 +00001539char *option_string(int prot, unsigned int opt, unsigned char *val,
1540 int opt_len, char *buf, int buf_len);
Simon Kelley89500e32013-09-20 16:29:20 +01001541struct dhcp_config *find_config(struct dhcp_config *configs,
1542 struct dhcp_context *context,
1543 unsigned char *clid, int clid_len,
1544 unsigned char *hwaddr, int hw_len,
1545 int hw_type, char *hostname);
1546int config_has_mac(struct dhcp_config *config, unsigned char *hwaddr, int len, int type);
Simon Kelley9380ba72012-04-16 14:41:56 +01001547#ifdef HAVE_LINUX_NETWORK
Simon Kelley3b3f4412013-10-11 16:33:28 +01001548char *whichdevice(void);
1549void bindtodevice(char *device, int fd);
Simon Kelley9380ba72012-04-16 14:41:56 +01001550#endif
Simon Kelley843c96b2012-02-27 17:42:38 +00001551# ifdef HAVE_DHCP6
Simon Kelley40ef23b2012-03-13 21:59:28 +00001552void display_opts6(void);
Simon Kelley843c96b2012-02-27 17:42:38 +00001553# endif
Simon Kelley1f776932012-12-16 19:46:08 +00001554void log_context(int family, struct dhcp_context *context);
Simon Kelleyff7eea22013-09-04 18:01:38 +01001555void log_relay(int family, struct dhcp_relay *relay);
Simon Kelley9e4abcb2004-01-22 19:47:41 +00001556#endif
Simon Kelleyc5ad4e72012-02-24 16:06:20 +00001557
1558/* outpacket.c */
1559#ifdef HAVE_DHCP6
1560void end_opt6(int container);
Simon Kelleyfa785732016-07-22 20:56:01 +01001561void reset_counter(void);
Simon Kelleyc5ad4e72012-02-24 16:06:20 +00001562int save_counter(int newval);
1563void *expand(size_t headroom);
1564int new_opt6(int opt);
1565void *put_opt6(void *data, size_t len);
1566void put_opt6_long(unsigned int val);
1567void put_opt6_short(unsigned int val);
1568void put_opt6_char(unsigned int val);
1569void put_opt6_string(char *s);
1570#endif
1571
1572/* radv.c */
1573#ifdef HAVE_DHCP6
1574void ra_init(time_t now);
Simon Kelley1f776932012-12-16 19:46:08 +00001575void icmp6_packet(time_t now);
Simon Kelleyc5ad4e72012-02-24 16:06:20 +00001576time_t periodic_ra(time_t now);
Josh Soref730c6742017-02-06 16:14:04 +00001577void ra_start_unsolicited(time_t now, struct dhcp_context *context);
Simon Kelley353ae4d2012-03-19 20:07:51 +00001578#endif
1579
1580/* slaac.c */
1581#ifdef HAVE_DHCP6
Simon Kelleya9ab7322012-04-28 11:29:37 +01001582void slaac_add_addrs(struct dhcp_lease *lease, time_t now, int force);
Simon Kelley353ae4d2012-03-19 20:07:51 +00001583time_t periodic_slaac(time_t now, struct dhcp_lease *leases);
1584void slaac_ping_reply(struct in6_addr *sender, unsigned char *packet, char *interface, struct dhcp_lease *leases);
Simon Kelleyc5ad4e72012-02-24 16:06:20 +00001585#endif
Simon Kelleyb5ea1cc2014-07-29 16:34:14 +01001586
1587/* loop.c */
1588#ifdef HAVE_LOOP
Rosen Penev50a28412017-06-27 22:27:02 +01001589void loop_send_probes(void);
Simon Kelleyb5ea1cc2014-07-29 16:34:14 +01001590int detect_loop(char *query, int type);
1591#endif
1592
Simon Kelley193de4a2014-12-10 17:32:16 +00001593/* inotify.c */
Simon Kelley04918052015-01-26 11:23:43 +00001594#ifdef HAVE_INOTIFY
Rosen Penev50a28412017-06-27 22:27:02 +01001595void inotify_dnsmasq_init(void);
Simon Kelley5f4dc5c2015-01-20 20:51:02 +00001596int inotify_check(time_t now);
Simon Kelley70d18732015-01-31 19:59:29 +00001597void set_dynamic_inotify(int flag, int total_size, struct crec **rhash, int revhashsz);
Simon Kelley193de4a2014-12-10 17:32:16 +00001598#endif
Simon Kelleyb842bc92015-07-12 21:09:11 +01001599
1600/* poll.c */
1601void poll_reset(void);
1602int poll_check(int fd, short event);
1603void poll_listen(int fd, short event);
1604int do_poll(int timeout);
1605
Simon Kelleyc2bcd1e2015-12-15 17:25:21 +00001606/* rrfilter.c */
1607size_t rrfilter(struct dns_header *header, size_t plen, int mode);
1608u16 *rrfilter_desc(int type);
1609int expand_workspace(unsigned char ***wkspc, int *szp, int new);
1610
Simon Kelley1d030162015-12-21 14:17:06 +00001611/* edns0.c */
Simon Kelley5bb88f02015-12-21 16:23:47 +00001612unsigned char *find_pseudoheader(struct dns_header *header, size_t plen,
1613 size_t *len, unsigned char **p, int *is_sign, int *is_last);
Simon Kelley1d030162015-12-21 14:17:06 +00001614size_t add_pseudoheader(struct dns_header *header, size_t plen, unsigned char *limit,
Simon Kelleyc7f3bd22016-02-28 21:48:34 +00001615 unsigned short udp_sz, int optno, unsigned char *opt, size_t optlen, int set_do, int replace);
Simon Kelley33702ab2015-12-28 23:17:15 +00001616size_t add_do_bit(struct dns_header *header, size_t plen, unsigned char *limit);
1617size_t add_edns0_config(struct dns_header *header, size_t plen, unsigned char *limit,
1618 union mysockaddr *source, time_t now, int *check_subnet);
Simon Kelley1d030162015-12-21 14:17:06 +00001619int check_source(struct dns_header *header, size_t plen, unsigned char *pseudoheader, union mysockaddr *peer);
Simon Kelley11867dc2015-12-23 16:15:58 +00001620
1621/* arp.c */
Simon Kelley33702ab2015-12-28 23:17:15 +00001622int find_mac(union mysockaddr *addr, unsigned char *mac, int lazy, time_t now);
1623int do_arp_script_run(void);
Simon Kelley6b173352018-05-08 18:32:14 +01001624
1625/* dump.c */
1626#ifdef HAVE_DUMPFILE
1627void dump_init(void);
1628void dump_packet(int mask, void *packet, size_t len, union mysockaddr *src, union mysockaddr *dst);
1629#endif