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61744359 | 1 | /* dnsmasq is Copyright (c) 2000-2013 Simon Kelley |
824af85b | 2 | |
9e4abcb5 SK |
3 | 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 | |
824af85b SK |
5 | the Free Software Foundation; version 2 dated June, 1991, or |
6 | (at your option) version 3 dated 29 June, 2007. | |
7 | ||
9e4abcb5 SK |
8 | 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. | |
824af85b | 12 | |
73a08a24 SK |
13 | 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/>. | |
9e4abcb5 SK |
15 | */ |
16 | ||
61744359 | 17 | #define COPYRIGHT "Copyright (c) 2000-2013 Simon Kelley" |
9e4abcb5 | 18 | |
1a6bca81 | 19 | #ifndef NO_LARGEFILE |
9e038946 | 20 | /* Ensure we can use files >2GB (log files may grow this big) */ |
1a6bca81 SK |
21 | # define _LARGEFILE_SOURCE 1 |
22 | # define _FILE_OFFSET_BITS 64 | |
23 | #endif | |
9e038946 | 24 | |
8ef5ada2 SK |
25 | /* Get linux C library versions and define _GNU_SOURCE for kFreeBSD. */ |
26 | #if defined(__linux__) || defined(__GLIBC__) | |
572b41eb SK |
27 | # ifndef __ANDROID__ |
28 | # define _GNU_SOURCE | |
29 | # endif | |
9e038946 SK |
30 | # include <features.h> |
31 | #endif | |
32 | ||
316e2730 SK |
33 | /* Need these defined early */ |
34 | #if defined(__sun) || defined(__sun__) | |
35 | # define _XPG4_2 | |
36 | # define __EXTENSIONS__ | |
37 | #endif | |
38 | ||
9e4abcb5 | 39 | /* get these before config.h for IPv6 stuff... */ |
44a2a316 | 40 | #include <sys/types.h> |
1f15b81d | 41 | #include <sys/socket.h> |
c72daea8 SK |
42 | |
43 | #ifdef __APPLE__ | |
44 | /* Define before netinet/in.h to select API. OSX Lion onwards. */ | |
45 | # define __APPLE_USE_RFC_3542 | |
46 | #endif | |
9e4abcb5 SK |
47 | #include <netinet/in.h> |
48 | ||
c72daea8 | 49 | /* Also needed before config.h. */ |
59353a6b SK |
50 | #include <getopt.h> |
51 | ||
9e4abcb5 | 52 | #include "config.h" |
b8187c80 | 53 | |
572b41eb SK |
54 | typedef unsigned char u8; |
55 | typedef unsigned short u16; | |
56 | typedef unsigned int u32; | |
52b92f4d | 57 | typedef unsigned long long u64; |
572b41eb | 58 | |
28c62557 GB |
59 | #define countof(x) (long)(sizeof(x) / sizeof(x[0])) |
60 | #define MIN(a,b) ((a) < (b) ? (a) : (b)) | |
61 | ||
c239f7de SK |
62 | #include "dns-protocol.h" |
63 | #include "dhcp-protocol.h" | |
c72daea8 | 64 | #ifdef HAVE_DHCP6 |
c239f7de SK |
65 | #include "dhcp6-protocol.h" |
66 | #include "radv-protocol.h" | |
c72daea8 | 67 | #endif |
572b41eb | 68 | |
b8187c80 | 69 | #define gettext_noop(S) (S) |
824af85b | 70 | #ifndef LOCALEDIR |
b8187c80 SK |
71 | # define _(S) (S) |
72 | #else | |
73 | # include <libintl.h> | |
74 | # include <locale.h> | |
75 | # define _(S) gettext(S) | |
76 | #endif | |
77 | ||
9e4abcb5 SK |
78 | #include <arpa/inet.h> |
79 | #include <sys/stat.h> | |
9e4abcb5 | 80 | #include <sys/ioctl.h> |
824af85b | 81 | #if defined(HAVE_SOLARIS_NETWORK) |
316e2730 | 82 | # include <sys/sockio.h> |
824af85b | 83 | #endif |
9e4abcb5 | 84 | #include <sys/select.h> |
feba5c1d | 85 | #include <sys/wait.h> |
9e4abcb5 | 86 | #include <sys/time.h> |
f2621c7f | 87 | #include <sys/un.h> |
8a911ccc | 88 | #include <limits.h> |
9e4abcb5 | 89 | #include <net/if.h> |
316e2730 SK |
90 | #if defined(HAVE_SOLARIS_NETWORK) && !defined(ifr_mtu) |
91 | /* Some solaris net/if./h omit this. */ | |
92 | # define ifr_mtu ifr_ifru.ifru_metric | |
93 | #endif | |
9e4abcb5 SK |
94 | #include <unistd.h> |
95 | #include <stdio.h> | |
96 | #include <string.h> | |
97 | #include <stdlib.h> | |
98 | #include <fcntl.h> | |
99 | #include <ctype.h> | |
100 | #include <signal.h> | |
9e038946 | 101 | #include <stddef.h> |
9e4abcb5 SK |
102 | #include <time.h> |
103 | #include <errno.h> | |
104 | #include <pwd.h> | |
105 | #include <grp.h> | |
f6b7dc47 | 106 | #include <stdarg.h> |
572b41eb | 107 | #if defined(__OpenBSD__) || defined(__NetBSD__) || defined(__sun__) || defined (__sun) || defined (__ANDROID__) |
44a2a316 SK |
108 | # include <netinet/if_ether.h> |
109 | #else | |
110 | # include <net/ethernet.h> | |
111 | #endif | |
9e4abcb5 SK |
112 | #include <net/if_arp.h> |
113 | #include <netinet/in_systm.h> | |
114 | #include <netinet/ip.h> | |
3be34541 | 115 | #include <netinet/ip_icmp.h> |
5e9e0efb | 116 | #include <sys/uio.h> |
849a8357 SK |
117 | #include <syslog.h> |
118 | #include <dirent.h> | |
5e9e0efb | 119 | #ifndef HAVE_LINUX_NETWORK |
44a2a316 | 120 | # include <net/if_dl.h> |
9e4abcb5 | 121 | #endif |
5e9e0efb | 122 | |
824af85b | 123 | #if defined(HAVE_LINUX_NETWORK) |
5e9e0efb SK |
124 | #include <linux/capability.h> |
125 | /* There doesn't seem to be a universally-available | |
9e038946 | 126 | userpace header for these. */ |
5e9e0efb | 127 | extern int capset(cap_user_header_t header, cap_user_data_t data); |
9e038946 SK |
128 | extern int capget(cap_user_header_t header, cap_user_data_t data); |
129 | #define LINUX_CAPABILITY_VERSION_1 0x19980330 | |
130 | #define LINUX_CAPABILITY_VERSION_2 0x20071026 | |
1a6bca81 | 131 | #define LINUX_CAPABILITY_VERSION_3 0x20080522 |
9e038946 | 132 | |
5e9e0efb | 133 | #include <sys/prctl.h> |
7622fc06 | 134 | #elif defined(HAVE_SOLARIS_NETWORK) |
824af85b | 135 | #include <priv.h> |
5e9e0efb | 136 | #endif |
9e4abcb5 | 137 | |
824af85b | 138 | /* daemon is function in the C library.... */ |
5aabfc78 SK |
139 | #define daemon dnsmasq_daemon |
140 | ||
141 | /* Async event queue */ | |
142 | struct event_desc { | |
c72daea8 | 143 | int event, data, msg_sz; |
5aabfc78 SK |
144 | }; |
145 | ||
146 | #define EVENT_RELOAD 1 | |
147 | #define EVENT_DUMP 2 | |
148 | #define EVENT_ALARM 3 | |
149 | #define EVENT_TERM 4 | |
150 | #define EVENT_CHILD 5 | |
151 | #define EVENT_REOPEN 6 | |
152 | #define EVENT_EXITED 7 | |
153 | #define EVENT_KILLED 8 | |
154 | #define EVENT_EXEC_ERR 9 | |
155 | #define EVENT_PIPE_ERR 10 | |
9e038946 | 156 | #define EVENT_USER_ERR 11 |
1a6bca81 SK |
157 | #define EVENT_CAP_ERR 12 |
158 | #define EVENT_PIDFILE 13 | |
159 | #define EVENT_HUSER_ERR 14 | |
160 | #define EVENT_GROUP_ERR 15 | |
161 | #define EVENT_DIE 16 | |
162 | #define EVENT_LOG_ERR 17 | |
7622fc06 | 163 | #define EVENT_FORK_ERR 18 |
c72daea8 | 164 | #define EVENT_LUA_ERR 19 |
8b3ae2fd | 165 | #define EVENT_TFTP_ERR 20 |
5aabfc78 SK |
166 | |
167 | /* Exit codes. */ | |
168 | #define EC_GOOD 0 | |
169 | #define EC_BADCONF 1 | |
170 | #define EC_BADNET 2 | |
171 | #define EC_FILE 3 | |
172 | #define EC_NOMEM 4 | |
173 | #define EC_MISC 5 | |
174 | #define EC_INIT_OFFSET 10 | |
175 | ||
0a852541 SK |
176 | /* Min buffer size: we check after adding each record, so there must be |
177 | memory for the largest packet, and the largest record so the | |
178 | min for DNS is PACKETSZ+MAXDNAME+RRFIXEDSZ which is < 1000. | |
179 | This might be increased is EDNS packet size if greater than the minimum. | |
cdeda28f SK |
180 | */ |
181 | #define DNSMASQ_PACKETSZ PACKETSZ+MAXDNAME+RRFIXEDSZ | |
44a2a316 | 182 | |
572b41eb | 183 | /* Trust the compiler dead-code eliminator.... */ |
28866e95 SK |
184 | #define option_bool(x) (((x) < 32) ? daemon->options & (1u << (x)) : daemon->options2 & (1u << ((x) - 32))) |
185 | ||
186 | #define OPT_BOGUSPRIV 0 | |
187 | #define OPT_FILTER 1 | |
188 | #define OPT_LOG 2 | |
189 | #define OPT_SELFMX 3 | |
190 | #define OPT_NO_HOSTS 4 | |
191 | #define OPT_NO_POLL 5 | |
192 | #define OPT_DEBUG 6 | |
193 | #define OPT_ORDER 7 | |
194 | #define OPT_NO_RESOLV 8 | |
195 | #define OPT_EXPAND 9 | |
196 | #define OPT_LOCALMX 10 | |
197 | #define OPT_NO_NEG 11 | |
198 | #define OPT_NODOTS_LOCAL 12 | |
199 | #define OPT_NOWILD 13 | |
200 | #define OPT_ETHERS 14 | |
201 | #define OPT_RESOLV_DOMAIN 15 | |
202 | #define OPT_NO_FORK 16 | |
203 | #define OPT_AUTHORITATIVE 17 | |
204 | #define OPT_LOCALISE 18 | |
205 | #define OPT_DBUS 19 | |
206 | #define OPT_DHCP_FQDN 20 | |
207 | #define OPT_NO_PING 21 | |
208 | #define OPT_LEASE_RO 22 | |
209 | #define OPT_ALL_SERVERS 23 | |
210 | #define OPT_RELOAD 24 | |
211 | #define OPT_LOCAL_REBIND 25 | |
212 | #define OPT_TFTP_SECURE 26 | |
213 | #define OPT_TFTP_NOBLOCK 27 | |
214 | #define OPT_LOG_OPTS 28 | |
215 | #define OPT_TFTP_APREF 29 | |
216 | #define OPT_NO_OVERRIDE 30 | |
217 | #define OPT_NO_REBIND 31 | |
218 | #define OPT_ADD_MAC 32 | |
237724c0 | 219 | #define OPT_DNSSEC_PROXY 33 |
7de060b0 SK |
220 | #define OPT_CONSEC_ADDR 34 |
221 | #define OPT_CONNTRACK 35 | |
c72daea8 | 222 | #define OPT_FQDN_UPDATE 36 |
c5ad4e79 | 223 | #define OPT_RA 37 |
61ce600b | 224 | #define OPT_TFTP_LC 38 |
54dd393f | 225 | #define OPT_CLEVERBIND 39 |
8bc4cece | 226 | #define OPT_TFTP 40 |
8d030462 | 227 | #define OPT_FAST_RA 41 |
7dbe193b GB |
228 | #define OPT_DNSSEC_VALIDATE 42 |
229 | #define OPT_LAST 43 | |
9e4abcb5 | 230 | |
7622fc06 SK |
231 | /* extra flags for my_syslog, we use a couple of facilities since they are known |
232 | not to occupy the same bits as priorities, no matter how syslog.h is set up. */ | |
233 | #define MS_TFTP LOG_USER | |
234 | #define MS_DHCP LOG_DAEMON | |
235 | ||
9e4abcb5 SK |
236 | struct all_addr { |
237 | union { | |
238 | struct in_addr addr4; | |
239 | #ifdef HAVE_IPV6 | |
240 | struct in6_addr addr6; | |
241 | #endif | |
242 | } addr; | |
243 | }; | |
244 | ||
245 | struct bogus_addr { | |
246 | struct in_addr addr; | |
247 | struct bogus_addr *next; | |
248 | }; | |
249 | ||
1cff166d SK |
250 | /* dns doctor param */ |
251 | struct doctor { | |
73a08a24 | 252 | struct in_addr in, end, out, mask; |
1cff166d SK |
253 | struct doctor *next; |
254 | }; | |
255 | ||
0a852541 SK |
256 | struct mx_srv_record { |
257 | char *name, *target; | |
3d8df260 SK |
258 | int issrv, srvport, priority, weight; |
259 | unsigned int offset; | |
0a852541 | 260 | struct mx_srv_record *next; |
de37951c SK |
261 | }; |
262 | ||
1a6bca81 SK |
263 | struct naptr { |
264 | char *name, *replace, *regexp, *services, *flags; | |
265 | unsigned int order, pref; | |
266 | struct naptr *next; | |
267 | }; | |
268 | ||
0a852541 | 269 | struct txt_record { |
28866e95 SK |
270 | char *name; |
271 | unsigned char *txt; | |
0a852541 SK |
272 | unsigned short class, len; |
273 | struct txt_record *next; | |
f6b7dc47 SK |
274 | }; |
275 | ||
832af0ba SK |
276 | struct ptr_record { |
277 | char *name, *ptr; | |
278 | struct ptr_record *next; | |
279 | }; | |
280 | ||
9009d746 SK |
281 | struct cname { |
282 | char *alias, *target; | |
283 | struct cname *next; | |
284 | }; | |
285 | ||
4f7b304f SK |
286 | struct auth_zone { |
287 | char *domain; | |
288 | struct subnet { | |
289 | int is6, prefixlen; | |
290 | struct in_addr addr4; | |
291 | #ifdef HAVE_IPV6 | |
292 | struct in6_addr addr6; | |
293 | #endif | |
294 | struct subnet *next; | |
295 | } *subnet; | |
296 | struct auth_zone *next; | |
297 | }; | |
298 | ||
299 | ||
e759d426 SK |
300 | struct host_record { |
301 | struct name_list { | |
302 | char *name; | |
303 | struct name_list *next; | |
304 | } *names; | |
305 | struct in_addr addr; | |
306 | #ifdef HAVE_IPV6 | |
307 | struct in6_addr addr6; | |
308 | #endif | |
309 | struct host_record *next; | |
310 | }; | |
311 | ||
f2621c7f SK |
312 | struct interface_name { |
313 | char *name; /* domain name */ | |
314 | char *intr; /* interface name */ | |
115ac3e4 SK |
315 | struct addrlist { |
316 | struct all_addr addr; | |
317 | struct addrlist *next; | |
318 | } *addr4; | |
319 | #ifdef HAVE_IPV6 | |
320 | struct addrlist *addr6; | |
321 | #endif | |
f2621c7f SK |
322 | struct interface_name *next; |
323 | }; | |
324 | ||
9e4abcb5 SK |
325 | union bigname { |
326 | char name[MAXDNAME]; | |
327 | union bigname *next; /* freelist */ | |
328 | }; | |
329 | ||
7b4ad2eb SK |
330 | struct keydata { |
331 | struct keydata *next; | |
332 | unsigned char key[KEYBLOCK_LEN]; | |
333 | }; | |
334 | ||
9e4abcb5 SK |
335 | struct crec { |
336 | struct crec *next, *prev, *hash_next; | |
cdbee9a4 | 337 | /* union is 16 bytes when doing IPv6, 8 bytes on 32 bit machines without IPv6 */ |
fd9fa481 SK |
338 | union { |
339 | struct all_addr addr; | |
340 | struct { | |
341 | struct crec *cache; | |
342 | int uid; | |
343 | } cname; | |
7b4ad2eb SK |
344 | struct { |
345 | struct keydata *keydata; | |
346 | unsigned char algo; | |
cdbee9a4 | 347 | unsigned char digest; /* DS only */ |
02f9b764 | 348 | unsigned short keytag; |
7b4ad2eb | 349 | } key; |
fd9fa481 | 350 | } addr; |
cdbee9a4 SK |
351 | time_t ttd; /* time to die */ |
352 | /* used as keylen if F_DS or F_DNSKEY, index to source for F_HOSTS */ | |
353 | int uid; | |
9e4abcb5 SK |
354 | unsigned short flags; |
355 | union { | |
356 | char sname[SMALLDNAME]; | |
357 | union bigname *bname; | |
358 | char *namep; | |
359 | } name; | |
360 | }; | |
361 | ||
28866e95 SK |
362 | #define F_IMMORTAL (1u<<0) |
363 | #define F_NAMEP (1u<<1) | |
364 | #define F_REVERSE (1u<<2) | |
365 | #define F_FORWARD (1u<<3) | |
366 | #define F_DHCP (1u<<4) | |
367 | #define F_NEG (1u<<5) | |
368 | #define F_HOSTS (1u<<6) | |
369 | #define F_IPV4 (1u<<7) | |
370 | #define F_IPV6 (1u<<8) | |
371 | #define F_BIGNAME (1u<<9) | |
372 | #define F_NXDOMAIN (1u<<10) | |
373 | #define F_CNAME (1u<<11) | |
7b4ad2eb | 374 | #define F_DNSKEY (1u<<12) |
28866e95 | 375 | #define F_CONFIG (1u<<13) |
7b4ad2eb SK |
376 | #define F_DS (1u<<14) |
377 | #define F_DNSSECOK (1u<<15) | |
378 | ||
28866e95 SK |
379 | /* below here are only valid as args to log_query: cache |
380 | entries are limited to 16 bits */ | |
381 | #define F_UPSTREAM (1u<<16) | |
382 | #define F_RRNAME (1u<<17) | |
383 | #define F_SERVER (1u<<18) | |
384 | #define F_QUERY (1u<<19) | |
7b4ad2eb | 385 | #define F_NOERR (1u<<20) |
4f7b304f SK |
386 | #define F_AUTH (1u<<21) |
387 | ||
7b4ad2eb SK |
388 | /* composites */ |
389 | #define F_TYPE (F_IPV4 | F_IPV6 | F_DNSKEY | F_DS) /* Only one may be set */ | |
390 | ||
28866e95 | 391 | |
9e4abcb5 SK |
392 | |
393 | /* struct sockaddr is not large enough to hold any address, | |
cdeda28f | 394 | and specifically not big enough to hold an IPv6 address. |
9e4abcb5 SK |
395 | Blech. Roll our own. */ |
396 | union mysockaddr { | |
397 | struct sockaddr sa; | |
398 | struct sockaddr_in in; | |
7622fc06 | 399 | #if defined(HAVE_IPV6) |
9e4abcb5 SK |
400 | struct sockaddr_in6 in6; |
401 | #endif | |
402 | }; | |
403 | ||
bad7b875 SK |
404 | /* bits in flag param to IPv6 callbacks from iface_enumerate() */ |
405 | #define IFACE_TENTATIVE 1 | |
406 | #define IFACE_DEPRECATED 2 | |
4568a6f8 | 407 | #define IFACE_PERMANENT 4 |
bad7b875 SK |
408 | |
409 | ||
0a852541 SK |
410 | #define SERV_FROM_RESOLV 1 /* 1 for servers from resolv, 0 for command line. */ |
411 | #define SERV_NO_ADDR 2 /* no server, this domain is local only */ | |
412 | #define SERV_LITERAL_ADDRESS 4 /* addr is the answer, not the server */ | |
5aabfc78 SK |
413 | #define SERV_HAS_DOMAIN 8 /* server for one domain only */ |
414 | #define SERV_HAS_SOURCE 16 /* source address defined */ | |
0a852541 SK |
415 | #define SERV_FOR_NODOTS 32 /* server for names with no domain part only */ |
416 | #define SERV_WARNED_RECURSIVE 64 /* avoid warning spam */ | |
3d8df260 SK |
417 | #define SERV_FROM_DBUS 128 /* 1 if source is DBus */ |
418 | #define SERV_MARK 256 /* for mark-and-delete */ | |
9e4abcb5 | 419 | #define SERV_TYPE (SERV_HAS_DOMAIN | SERV_FOR_NODOTS) |
824af85b | 420 | #define SERV_COUNTED 512 /* workspace for log code */ |
8ef5ada2 SK |
421 | #define SERV_USE_RESOLV 1024 /* forward this domain in the normal way */ |
422 | #define SERV_NO_REBIND 2048 /* inhibit dns-rebind protection */ | |
9e4abcb5 SK |
423 | |
424 | struct serverfd { | |
425 | int fd; | |
426 | union mysockaddr source_addr; | |
824af85b | 427 | char interface[IF_NAMESIZE+1]; |
9e4abcb5 SK |
428 | struct serverfd *next; |
429 | }; | |
430 | ||
1a6bca81 SK |
431 | struct randfd { |
432 | int fd; | |
433 | unsigned short refcount, family; | |
434 | }; | |
435 | ||
9e4abcb5 SK |
436 | struct server { |
437 | union mysockaddr addr, source_addr; | |
824af85b | 438 | char interface[IF_NAMESIZE+1]; |
1697269c | 439 | struct serverfd *sfd; |
9e4abcb5 | 440 | char *domain; /* set if this server only handles a domain. */ |
feba5c1d | 441 | int flags, tcpfd; |
824af85b | 442 | unsigned int queries, failed_queries; |
9e4abcb5 SK |
443 | struct server *next; |
444 | }; | |
445 | ||
13d86c73 JD |
446 | struct ipsets { |
447 | char **sets; | |
448 | char *domain; | |
449 | struct ipsets *next; | |
450 | }; | |
451 | ||
9e4abcb5 SK |
452 | struct irec { |
453 | union mysockaddr addr; | |
f6b7dc47 | 454 | struct in_addr netmask; /* only valid for IPv4 */ |
5d162f20 SK |
455 | int tftp_ok, dhcp_ok, mtu, done, dad, dns_auth, index, multicast_done; |
456 | char *name; | |
9e4abcb5 SK |
457 | struct irec *next; |
458 | }; | |
459 | ||
44a2a316 | 460 | struct listener { |
832af0ba | 461 | int fd, tcpfd, tftpfd, family; |
52d4abf2 | 462 | struct irec *iface; /* only sometimes valid for non-wildcard */ |
44a2a316 SK |
463 | struct listener *next; |
464 | }; | |
465 | ||
9e4abcb5 SK |
466 | /* interface and address parms from command line. */ |
467 | struct iname { | |
468 | char *name; | |
469 | union mysockaddr addr; | |
4ce4f377 | 470 | int used; |
9e4abcb5 SK |
471 | struct iname *next; |
472 | }; | |
473 | ||
474 | /* resolv-file parms from command-line */ | |
475 | struct resolvc { | |
476 | struct resolvc *next; | |
3d8df260 SK |
477 | int is_default, logged; |
478 | time_t mtime; | |
9e4abcb5 SK |
479 | char *name; |
480 | }; | |
481 | ||
28866e95 | 482 | /* adn-hosts parms from command-line (also dhcp-hostsfile and dhcp-optsfile */ |
7622fc06 SK |
483 | #define AH_DIR 1 |
484 | #define AH_INACTIVE 2 | |
fd9fa481 SK |
485 | struct hostsfile { |
486 | struct hostsfile *next; | |
7622fc06 | 487 | int flags; |
fd9fa481 | 488 | char *fname; |
cdeda28f | 489 | int index; /* matches to cache entries for logging */ |
fd9fa481 SK |
490 | }; |
491 | ||
28866e95 SK |
492 | #define FREC_NOREBIND 1 |
493 | #define FREC_CHECKING_DISABLED 2 | |
494 | ||
9e4abcb5 SK |
495 | struct frec { |
496 | union mysockaddr source; | |
44a2a316 | 497 | struct all_addr dest; |
832af0ba | 498 | struct server *sentto; /* NULL means free */ |
1a6bca81 SK |
499 | struct randfd *rfd4; |
500 | #ifdef HAVE_IPV6 | |
501 | struct randfd *rfd6; | |
502 | #endif | |
dfa666f2 | 503 | unsigned int iface; |
9e4abcb5 | 504 | unsigned short orig_id, new_id; |
28866e95 | 505 | int fd, forwardall, flags; |
fd9fa481 | 506 | unsigned int crc; |
9e4abcb5 SK |
507 | time_t time; |
508 | struct frec *next; | |
509 | }; | |
510 | ||
40ef23b5 SK |
511 | /* flags in top of length field for DHCP-option tables */ |
512 | #define OT_ADDR_LIST 0x8000 | |
513 | #define OT_RFC1035_NAME 0x4000 | |
514 | #define OT_INTERNAL 0x2000 | |
515 | #define OT_NAME 0x1000 | |
516 | #define OT_CSTRING 0x0800 | |
517 | #define OT_DEC 0x0400 | |
23245c0c | 518 | #define OT_TIME 0x0200 |
40ef23b5 | 519 | |
1697269c SK |
520 | /* actions in the daemon->helper RPC */ |
521 | #define ACTION_DEL 1 | |
522 | #define ACTION_OLD_HOSTNAME 2 | |
523 | #define ACTION_OLD 3 | |
524 | #define ACTION_ADD 4 | |
a9530964 | 525 | #define ACTION_TFTP 5 |
1697269c | 526 | |
4cb1b320 SK |
527 | #define LEASE_NEW 1 /* newly created */ |
528 | #define LEASE_CHANGED 2 /* modified */ | |
529 | #define LEASE_AUX_CHANGED 4 /* CLID or expiry changed */ | |
530 | #define LEASE_AUTH_NAME 8 /* hostname came from config, not from client */ | |
531 | #define LEASE_USED 16 /* used this DHCPv6 transaction */ | |
532 | #define LEASE_NA 32 /* IPv6 no-temporary lease */ | |
533 | #define LEASE_TA 64 /* IPv6 temporary lease */ | |
353ae4d2 | 534 | #define LEASE_HAVE_HWADDR 128 /* Have set hwaddress */ |
4cb1b320 | 535 | |
9e4abcb5 SK |
536 | struct dhcp_lease { |
537 | int clid_len; /* length of client identifier */ | |
538 | unsigned char *clid; /* clientid */ | |
539 | char *hostname, *fqdn; /* name from client-hostname option or config */ | |
1697269c | 540 | char *old_hostname; /* hostname before it moved to another lease */ |
4cb1b320 | 541 | int flags; |
9e4abcb5 | 542 | time_t expires; /* lease expiry */ |
5e9e0efb SK |
543 | #ifdef HAVE_BROKEN_RTC |
544 | unsigned int length; | |
545 | #endif | |
52b92f4d SK |
546 | int hwaddr_len, hwaddr_type; /* hw_type used for iaid in v6 */ |
547 | unsigned char hwaddr[DHCP_CHADDR_MAX]; /* also IPv6 address */ | |
1f15b81d | 548 | struct in_addr addr, override, giaddr; |
316e2730 SK |
549 | unsigned char *extradata; |
550 | unsigned int extradata_len, extradata_size; | |
824af85b | 551 | int last_interface; |
353ae4d2 SK |
552 | #ifdef HAVE_DHCP6 |
553 | struct slaac_address { | |
554 | struct in6_addr addr, local; | |
555 | time_t ping_time; | |
556 | int backoff; /* zero -> confirmed */ | |
557 | struct slaac_address *next; | |
558 | } *slaac_address; | |
6f9aaa93 | 559 | int vendorclass_count; |
353ae4d2 | 560 | #endif |
9e4abcb5 SK |
561 | struct dhcp_lease *next; |
562 | }; | |
563 | ||
a222641c SK |
564 | struct dhcp_netid { |
565 | char *net; | |
566 | struct dhcp_netid *next; | |
567 | }; | |
568 | ||
26128d27 SK |
569 | struct dhcp_netid_list { |
570 | struct dhcp_netid *list; | |
571 | struct dhcp_netid_list *next; | |
572 | }; | |
1697269c | 573 | |
8ef5ada2 SK |
574 | struct tag_if { |
575 | struct dhcp_netid_list *set; | |
576 | struct dhcp_netid *tag; | |
577 | struct tag_if *next; | |
578 | }; | |
579 | ||
9009d746 SK |
580 | struct hwaddr_config { |
581 | int hwaddr_len, hwaddr_type; | |
582 | unsigned char hwaddr[DHCP_CHADDR_MAX]; | |
583 | unsigned int wildcard_mask; | |
584 | struct hwaddr_config *next; | |
585 | }; | |
586 | ||
9e4abcb5 | 587 | struct dhcp_config { |
33820b7e | 588 | unsigned int flags; |
9e4abcb5 SK |
589 | int clid_len; /* length of client identifier */ |
590 | unsigned char *clid; /* clientid */ | |
9009d746 | 591 | char *hostname, *domain; |
8ef5ada2 | 592 | struct dhcp_netid_list *netid; |
52b92f4d SK |
593 | #ifdef HAVE_DHCP6 |
594 | struct in6_addr addr6; | |
595 | #endif | |
9e4abcb5 | 596 | struct in_addr addr; |
849a8357 | 597 | time_t decline_time; |
9009d746 SK |
598 | unsigned int lease_time; |
599 | struct hwaddr_config *hwaddr; | |
9e4abcb5 SK |
600 | struct dhcp_config *next; |
601 | }; | |
602 | ||
4cb1b320 SK |
603 | #define have_config(config, mask) ((config) && ((config)->flags & (mask))) |
604 | ||
0a852541 SK |
605 | #define CONFIG_DISABLE 1 |
606 | #define CONFIG_CLID 2 | |
0a852541 SK |
607 | #define CONFIG_TIME 8 |
608 | #define CONFIG_NAME 16 | |
609 | #define CONFIG_ADDR 32 | |
0a852541 | 610 | #define CONFIG_NOCLID 128 |
849a8357 SK |
611 | #define CONFIG_FROM_ETHERS 256 /* entry created by /etc/ethers */ |
612 | #define CONFIG_ADDR_HOSTS 512 /* address added by from /etc/hosts */ | |
613 | #define CONFIG_DECLINED 1024 /* address declined by client */ | |
5aabfc78 | 614 | #define CONFIG_BANK 2048 /* from dhcp hosts file */ |
52b92f4d | 615 | #define CONFIG_ADDR6 4096 |
30393100 | 616 | #define CONFIG_WILDCARD 8192 |
33820b7e | 617 | |
9e4abcb5 | 618 | struct dhcp_opt { |
cdeda28f | 619 | int opt, len, flags; |
73a08a24 SK |
620 | union { |
621 | int encap; | |
622 | unsigned int wildcard_mask; | |
623 | unsigned char *vendor_class; | |
624 | } u; | |
625 | unsigned char *val; | |
26128d27 | 626 | struct dhcp_netid *netid; |
9e4abcb5 | 627 | struct dhcp_opt *next; |
a84fa1d0 SK |
628 | }; |
629 | ||
cdeda28f SK |
630 | #define DHOPT_ADDR 1 |
631 | #define DHOPT_STRING 2 | |
6b01084f | 632 | #define DHOPT_ENCAPSULATE 4 |
73a08a24 | 633 | #define DHOPT_ENCAP_MATCH 8 |
6b01084f | 634 | #define DHOPT_FORCE 16 |
824af85b | 635 | #define DHOPT_BANK 32 |
73a08a24 SK |
636 | #define DHOPT_ENCAP_DONE 64 |
637 | #define DHOPT_MATCH 128 | |
638 | #define DHOPT_VENDOR 256 | |
639 | #define DHOPT_HEX 512 | |
7622fc06 | 640 | #define DHOPT_VENDOR_MATCH 1024 |
316e2730 | 641 | #define DHOPT_RFC3925 2048 |
7de060b0 | 642 | #define DHOPT_TAGOK 4096 |
4cb1b320 | 643 | #define DHOPT_ADDR6 8192 |
cdeda28f | 644 | |
26128d27 | 645 | struct dhcp_boot { |
7de060b0 | 646 | char *file, *sname, *tftp_sname; |
26128d27 SK |
647 | struct in_addr next_server; |
648 | struct dhcp_netid *netid; | |
649 | struct dhcp_boot *next; | |
650 | }; | |
651 | ||
7622fc06 SK |
652 | struct pxe_service { |
653 | unsigned short CSA, type; | |
751d6f4a | 654 | char *menu, *basename, *sname; |
7622fc06 SK |
655 | struct in_addr server; |
656 | struct dhcp_netid *netid; | |
657 | struct pxe_service *next; | |
658 | }; | |
659 | ||
f2621c7f SK |
660 | #define MATCH_VENDOR 1 |
661 | #define MATCH_USER 2 | |
662 | #define MATCH_CIRCUIT 3 | |
663 | #define MATCH_REMOTE 4 | |
664 | #define MATCH_SUBSCRIBER 5 | |
665 | ||
666 | /* vendorclass, userclass, remote-id or cicuit-id */ | |
a84fa1d0 | 667 | struct dhcp_vendor { |
a5c72ab5 SK |
668 | int len, match_type; |
669 | unsigned int enterprise; | |
a222641c SK |
670 | char *data; |
671 | struct dhcp_netid netid; | |
a84fa1d0 SK |
672 | struct dhcp_vendor *next; |
673 | }; | |
9e4abcb5 | 674 | |
cdeda28f SK |
675 | struct dhcp_mac { |
676 | unsigned int mask; | |
677 | int hwaddr_len, hwaddr_type; | |
678 | unsigned char hwaddr[DHCP_CHADDR_MAX]; | |
679 | struct dhcp_netid netid; | |
680 | struct dhcp_mac *next; | |
681 | }; | |
682 | ||
832af0ba SK |
683 | struct dhcp_bridge { |
684 | char iface[IF_NAMESIZE]; | |
685 | struct dhcp_bridge *alias, *next; | |
686 | }; | |
832af0ba | 687 | |
9009d746 | 688 | struct cond_domain { |
48fd1c4d | 689 | char *domain, *prefix; |
9009d746 | 690 | struct in_addr start, end; |
d74942a0 SK |
691 | #ifdef HAVE_IPV6 |
692 | struct in6_addr start6, end6; | |
693 | #endif | |
694 | int is6; | |
9009d746 | 695 | struct cond_domain *next; |
1f776932 | 696 | }; |
9009d746 | 697 | |
a6ebfacf SK |
698 | #ifdef OPTION6_PREFIX_CLASS |
699 | struct prefix_class { | |
700 | int class; | |
c630924d | 701 | struct dhcp_netid tag; |
a6ebfacf SK |
702 | struct prefix_class *next; |
703 | }; | |
704 | #endif | |
705 | ||
9e4abcb5 | 706 | struct dhcp_context { |
feba5c1d | 707 | unsigned int lease_time, addr_epoch; |
0a852541 SK |
708 | struct in_addr netmask, broadcast; |
709 | struct in_addr local, router; | |
a84fa1d0 | 710 | struct in_addr start, end; /* range of available addresses */ |
c72daea8 SK |
711 | #ifdef HAVE_DHCP6 |
712 | struct in6_addr start6, end6; /* range of available addresses */ | |
e44ddcac | 713 | struct in6_addr local6; |
353ae4d2 | 714 | int prefix, if_index; |
ef1a94ab SK |
715 | unsigned int valid, preferred, saved_valid; |
716 | time_t ra_time, ra_short_period_start, address_lost_time; | |
1f776932 | 717 | char *template_interface; |
c72daea8 | 718 | #endif |
0a852541 | 719 | int flags; |
cdeda28f | 720 | struct dhcp_netid netid, *filter; |
36717eee | 721 | struct dhcp_context *next, *current; |
9e4abcb5 SK |
722 | }; |
723 | ||
30cd9666 SK |
724 | #define CONTEXT_STATIC 1 |
725 | #define CONTEXT_NETMASK 2 | |
726 | #define CONTEXT_BRDCAST 4 | |
727 | #define CONTEXT_PROXY 8 | |
728 | #define CONTEXT_RA_ONLY 16 | |
729 | #define CONTEXT_RA_DONE 32 | |
730 | #define CONTEXT_RA_NAME 64 | |
731 | #define CONTEXT_RA_STATELESS 128 | |
732 | #define CONTEXT_DHCP 256 | |
c8257540 | 733 | #define CONTEXT_DEPRECATE 512 |
1f776932 SK |
734 | #define CONTEXT_TEMPLATE 1024 /* create contexts using addresses */ |
735 | #define CONTEXT_CONSTRUCTED 2048 | |
736 | #define CONTEXT_GC 4096 | |
737 | #define CONTEXT_RA 8192 | |
49333cbd | 738 | #define CONTEXT_CONF_USED 16384 |
a6ebfacf | 739 | #define CONTEXT_USED 32768 |
921360ce | 740 | #define CONTEXT_NOAUTH 65536 |
ef1a94ab SK |
741 | #define CONTEXT_OLD 131072 |
742 | ||
0a852541 | 743 | |
3d8df260 SK |
744 | struct ping_result { |
745 | struct in_addr addr; | |
746 | time_t time; | |
7de060b0 | 747 | unsigned int hash; |
3d8df260 SK |
748 | struct ping_result *next; |
749 | }; | |
9e4abcb5 | 750 | |
832af0ba SK |
751 | struct tftp_file { |
752 | int refcount, fd; | |
753 | off_t size; | |
5aabfc78 SK |
754 | dev_t dev; |
755 | ino_t inode; | |
832af0ba SK |
756 | char filename[]; |
757 | }; | |
758 | ||
759 | struct tftp_transfer { | |
760 | int sockfd; | |
761 | time_t timeout; | |
762 | int backoff; | |
9e038946 SK |
763 | unsigned int block, blocksize, expansion; |
764 | off_t offset; | |
28866e95 | 765 | union mysockaddr peer; |
9e038946 | 766 | char opt_blocksize, opt_transize, netascii, carrylf; |
832af0ba SK |
767 | struct tftp_file *file; |
768 | struct tftp_transfer *next; | |
769 | }; | |
770 | ||
8ef5ada2 SK |
771 | struct addr_list { |
772 | struct in_addr addr; | |
773 | struct addr_list *next; | |
774 | }; | |
775 | ||
8ef5ada2 SK |
776 | struct tftp_prefix { |
777 | char *interface; | |
778 | char *prefix; | |
779 | struct tftp_prefix *next; | |
780 | }; | |
781 | ||
782 | ||
5aabfc78 | 783 | extern struct daemon { |
3be34541 SK |
784 | /* datastuctures representing the command-line and |
785 | config file arguments. All set (including defaults) | |
786 | in option.c */ | |
787 | ||
28866e95 | 788 | unsigned int options, options2; |
3be34541 | 789 | struct resolvc default_resolv, *resolv_files; |
9009d746 | 790 | time_t last_resolv; |
0a852541 | 791 | struct mx_srv_record *mxnames; |
1a6bca81 | 792 | struct naptr *naptr; |
9f7f3b12 | 793 | struct txt_record *txt, *rr; |
832af0ba | 794 | struct ptr_record *ptr; |
e759d426 | 795 | struct host_record *host_records, *host_records_tail; |
9009d746 | 796 | struct cname *cnames; |
4f7b304f | 797 | struct auth_zone *auth_zones; |
f2621c7f | 798 | struct interface_name *int_names; |
3be34541 SK |
799 | char *mxtarget; |
800 | char *lease_file; | |
9e038946 | 801 | char *username, *groupname, *scriptuser; |
c72daea8 | 802 | char *luascript; |
429798fd SK |
803 | char *authserver, *hostmaster; |
804 | struct iname *authinterface; | |
e1ff419c | 805 | struct name_list *secondary_forward_server; |
1a6bca81 | 806 | int group_set, osport; |
3be34541 | 807 | char *domain_suffix; |
2bb73af7 | 808 | struct cond_domain *cond_domain, *synth_domains; |
3be34541 | 809 | char *runfile; |
7cebd20f | 810 | char *lease_change_command; |
2937f8a0 | 811 | struct iname *if_names, *if_addrs, *if_except, *dhcp_except, *auth_peers, *tftp_interfaces; |
3be34541 SK |
812 | struct bogus_addr *bogus_addr; |
813 | struct server *servers; | |
13d86c73 | 814 | struct ipsets *ipsets; |
849a8357 | 815 | int log_fac; /* log facility */ |
f2621c7f SK |
816 | char *log_file; /* optional log file */ |
817 | int max_logs; /* queue limit */ | |
208b65c5 | 818 | int cachesize, ftabsize; |
1a6bca81 | 819 | int port, query_port, min_port; |
4f7b304f | 820 | unsigned long local_ttl, neg_ttl, max_ttl, max_cache_ttl, auth_ttl; |
fd9fa481 | 821 | struct hostsfile *addn_hosts; |
1f776932 | 822 | struct dhcp_context *dhcp, *dhcp6; |
3be34541 | 823 | struct dhcp_config *dhcp_conf; |
3634c54e | 824 | struct dhcp_opt *dhcp_opts, *dhcp_match, *dhcp_opts6, *dhcp_match6; |
3be34541 | 825 | struct dhcp_vendor *dhcp_vendors; |
cdeda28f | 826 | struct dhcp_mac *dhcp_macs; |
26128d27 | 827 | struct dhcp_boot *boot_config; |
7622fc06 | 828 | struct pxe_service *pxe_services; |
8ef5ada2 SK |
829 | struct tag_if *tag_if; |
830 | struct addr_list *override_relays; | |
831 | int override; | |
1f15b81d | 832 | int enable_pxe; |
1f776932 | 833 | int doing_ra, doing_dhcp6; |
8ef5ada2 SK |
834 | struct dhcp_netid_list *dhcp_ignore, *dhcp_ignore_names, *dhcp_gen_names; |
835 | struct dhcp_netid_list *force_broadcast, *bootp_dynamic; | |
28866e95 | 836 | struct hostsfile *dhcp_hosts_file, *dhcp_opts_file; |
824af85b | 837 | int dhcp_max, tftp_max; |
9e038946 | 838 | int dhcp_server_port, dhcp_client_port; |
824af85b | 839 | int start_tftp_port, end_tftp_port; |
3be34541 SK |
840 | unsigned int min_leasetime; |
841 | struct doctor *doctors; | |
842 | unsigned short edns_pktsz; | |
824af85b | 843 | char *tftp_prefix; |
8ef5ada2 | 844 | struct tftp_prefix *if_prefix; /* per-interface TFTP prefixes */ |
8b372704 SK |
845 | unsigned int duid_enterprise, duid_config_len; |
846 | unsigned char *duid_config; | |
ad094275 | 847 | char *dbus_name; |
4f7b304f | 848 | unsigned long soa_sn, soa_refresh, soa_retry, soa_expiry; |
c630924d SK |
849 | #ifdef OPTION6_PREFIX_CLASS |
850 | struct prefix_class *prefix_classes; | |
851 | #endif | |
3be34541 SK |
852 | |
853 | /* globally used stuff for DNS */ | |
854 | char *packet; /* packet buffer */ | |
0a852541 | 855 | int packet_buff_sz; /* size of above */ |
3be34541 | 856 | char *namebuff; /* MAXDNAME size buffer */ |
824af85b | 857 | unsigned int local_answer, queries_forwarded; |
1a6bca81 | 858 | struct frec *frec_list; |
3be34541 | 859 | struct serverfd *sfds; |
3d8df260 | 860 | struct irec *interfaces; |
3be34541 SK |
861 | struct listener *listeners; |
862 | struct server *last_server; | |
1f15b81d SK |
863 | time_t forwardtime; |
864 | int forwardcount; | |
cdeda28f SK |
865 | struct server *srv_save; /* Used for resend on DoD */ |
866 | size_t packet_len; /* " " */ | |
3927da46 | 867 | struct randfd *rfd_save; /* " " */ |
7622fc06 | 868 | pid_t tcp_pids[MAX_PROCS]; |
1a6bca81 | 869 | struct randfd randomsocks[RANDOM_SOCKS]; |
316e2730 | 870 | int v6pktinfo; |
1a6bca81 | 871 | |
3be34541 | 872 | /* DHCP state */ |
316e2730 | 873 | int dhcpfd, helperfd, pxefd; |
7622fc06 | 874 | #if defined(HAVE_LINUX_NETWORK) |
0a852541 | 875 | int netlinkfd; |
7622fc06 | 876 | #elif defined(HAVE_BSD_NETWORK) |
5e9e0efb | 877 | int dhcp_raw_fd, dhcp_icmp_fd; |
0a852541 | 878 | #endif |
5e9e0efb | 879 | struct iovec dhcp_packet; |
8ef5ada2 | 880 | char *dhcp_buff, *dhcp_buff2, *dhcp_buff3; |
3d8df260 | 881 | struct ping_result *ping_results; |
cdeda28f | 882 | FILE *lease_stream; |
832af0ba | 883 | struct dhcp_bridge *bridges; |
c72daea8 SK |
884 | #ifdef HAVE_DHCP6 |
885 | int duid_len; | |
886 | unsigned char *duid; | |
887 | struct iovec outpacket; | |
c5ad4e79 | 888 | int dhcp6fd, icmp6fd; |
c72daea8 | 889 | #endif |
3d8df260 | 890 | /* DBus stuff */ |
3d8df260 SK |
891 | /* void * here to avoid depending on dbus headers outside dbus.c */ |
892 | void *dbus; | |
832af0ba | 893 | #ifdef HAVE_DBUS |
3d8df260 SK |
894 | struct watch *watches; |
895 | #endif | |
896 | ||
832af0ba | 897 | /* TFTP stuff */ |
a9530964 | 898 | struct tftp_transfer *tftp_trans, *tftp_done_trans; |
824af85b | 899 | |
c72daea8 SK |
900 | /* utility string buffer, hold max sized IP address as string */ |
901 | char *addrbuff; | |
902 | ||
5aabfc78 | 903 | } *daemon; |
3be34541 | 904 | |
9e4abcb5 | 905 | /* cache.c */ |
5aabfc78 | 906 | void cache_init(void); |
28866e95 | 907 | void log_query(unsigned int flags, char *name, struct all_addr *addr, char *arg); |
7622fc06 | 908 | char *record_source(int index); |
4f7b304f | 909 | void querystr(char *desc, char *str, unsigned short type); |
9e4abcb5 SK |
910 | struct crec *cache_find_by_addr(struct crec *crecp, |
911 | struct all_addr *addr, time_t now, | |
912 | unsigned short prot); | |
913 | struct crec *cache_find_by_name(struct crec *crecp, | |
914 | char *name, time_t now, unsigned short prot); | |
915 | void cache_end_insert(void); | |
916 | void cache_start_insert(void); | |
fd9fa481 SK |
917 | struct crec *cache_insert(char *name, struct all_addr *addr, |
918 | time_t now, unsigned long ttl, unsigned short flags); | |
7622fc06 | 919 | void cache_reload(void); |
4cb1b320 | 920 | void cache_add_dhcp_entry(char *host_name, int prot, struct all_addr *host_address, time_t ttd); |
7de060b0 | 921 | struct in_addr a_record_from_hosts(char *name, time_t now); |
9e4abcb5 | 922 | void cache_unhash_dhcp(void); |
5aabfc78 | 923 | void dump_cache(time_t now); |
9e4abcb5 | 924 | char *cache_get_name(struct crec *crecp); |
b75e9363 | 925 | struct crec *cache_enumerate(int init); |
7b4ad2eb SK |
926 | #ifdef HAVE_DNSSEC |
927 | struct keydata *keydata_alloc(char *data, size_t len); | |
458824dc | 928 | size_t keydata_walk(struct keydata **key, unsigned char **p, size_t cnt); |
7b4ad2eb SK |
929 | void keydata_free(struct keydata *blocks); |
930 | #endif | |
9e4abcb5 | 931 | |
2bb73af7 SK |
932 | /* domain.c */ |
933 | char *get_domain(struct in_addr addr); | |
934 | #ifdef HAVE_IPV6 | |
935 | char *get_domain6(struct in6_addr *addr); | |
936 | #endif | |
937 | int is_name_synthetic(int flags, char *name, struct all_addr *addr); | |
938 | int is_rev_synth(int flag, struct all_addr *addr, char *name); | |
939 | ||
9e4abcb5 | 940 | /* rfc1035.c */ |
f53c79c0 GB |
941 | int extract_name(struct dns_header *header, size_t plen, unsigned char **pp, |
942 | char *name, int isExtract, int extrabytes); | |
943 | unsigned char *skip_questions(struct dns_header *header, size_t plen); | |
572b41eb | 944 | unsigned int extract_request(struct dns_header *header, size_t qlen, |
c1bb8504 | 945 | char *name, unsigned short *typep); |
572b41eb | 946 | size_t setup_reply(struct dns_header *header, size_t qlen, |
28866e95 | 947 | struct all_addr *addrp, unsigned int flags, |
cdeda28f | 948 | unsigned long local_ttl); |
572b41eb | 949 | int extract_addresses(struct dns_header *header, size_t qlen, char *namebuff, |
13d86c73 JD |
950 | time_t now, char **ipsets, int is_sign, int checkrebind, |
951 | int checking_disabled); | |
572b41eb | 952 | size_t answer_request(struct dns_header *header, char *limit, size_t qlen, |
f6b7dc47 | 953 | struct in_addr local_addr, struct in_addr local_netmask, time_t now); |
572b41eb | 954 | int check_for_bogus_wildcard(struct dns_header *header, size_t qlen, char *name, |
9e4abcb5 | 955 | struct bogus_addr *addr, time_t now); |
572b41eb | 956 | unsigned char *find_pseudoheader(struct dns_header *header, size_t plen, |
832af0ba | 957 | size_t *len, unsigned char **p, int *is_sign); |
5aabfc78 | 958 | int check_for_local_domain(char *name, time_t now); |
572b41eb SK |
959 | unsigned int questions_crc(struct dns_header *header, size_t plen, char *buff); |
960 | size_t resize_packet(struct dns_header *header, size_t plen, | |
cdeda28f | 961 | unsigned char *pheader, size_t hlen); |
572b41eb | 962 | size_t add_mac(struct dns_header *header, size_t plen, char *limit, union mysockaddr *l3); |
4f7b304f | 963 | int add_resource_record(struct dns_header *header, char *limit, int *truncp, |
b75e9363 | 964 | int nameoffset, unsigned char **pp, unsigned long ttl, |
e1ff419c | 965 | int *offset, unsigned short type, unsigned short class, char *format, ...); |
4f7b304f SK |
966 | unsigned char *skip_questions(struct dns_header *header, size_t plen); |
967 | int extract_name(struct dns_header *header, size_t plen, unsigned char **pp, | |
968 | char *name, int isExtract, int extrabytes); | |
969 | int in_arpa_name_2_addr(char *namein, struct all_addr *addrp); | |
970 | ||
971 | /* auth.c */ | |
4820dce9 | 972 | #ifdef HAVE_AUTH |
49678767 | 973 | size_t answer_auth(struct dns_header *header, char *limit, size_t qlen, time_t now, union mysockaddr *peer_addr); |
4820dce9 | 974 | #endif |
9e4abcb5 | 975 | |
f53c79c0 GB |
976 | /* dnssec.c */ |
977 | int dnssec_validate(struct dns_header *header, size_t plen); | |
978 | ||
9e4abcb5 | 979 | /* util.c */ |
1a6bca81 | 980 | void rand_init(void); |
9e4abcb5 | 981 | unsigned short rand16(void); |
1f15b81d SK |
982 | int legal_hostname(char *c); |
983 | char *canonicalise(char *s, int *nomem); | |
3d8df260 | 984 | unsigned char *do_rfc1035_name(unsigned char *p, char *sval); |
0a852541 | 985 | void *safe_malloc(size_t size); |
1a6bca81 | 986 | void safe_pipe(int *fd, int read_noblock); |
5aabfc78 | 987 | void *whine_malloc(size_t size); |
9e4abcb5 SK |
988 | int sa_len(union mysockaddr *addr); |
989 | int sockaddr_isequal(union mysockaddr *s1, union mysockaddr *s2); | |
c99df938 | 990 | int hostname_isequal(const char *a, const char *b); |
5e9e0efb | 991 | time_t dnsmasq_time(void); |
a84fa1d0 | 992 | int is_same_net(struct in_addr a, struct in_addr b, struct in_addr mask); |
c72daea8 SK |
993 | #ifdef HAVE_IPV6 |
994 | int is_same_net6(struct in6_addr *a, struct in6_addr *b, int prefixlen); | |
52b92f4d SK |
995 | u64 addr6part(struct in6_addr *addr); |
996 | void setaddr6part(struct in6_addr *addr, u64 host); | |
c72daea8 | 997 | #endif |
fd9fa481 | 998 | int retry_send(void); |
0a852541 | 999 | void prettyprint_time(char *buf, unsigned int t); |
3d8df260 | 1000 | int prettyprint_addr(union mysockaddr *addr, char *buf); |
0a852541 | 1001 | int parse_hex(char *in, unsigned char *out, int maxlen, |
cdeda28f | 1002 | unsigned int *wildcard_mask, int *mac_type); |
5e9e0efb SK |
1003 | int memcmp_masked(unsigned char *a, unsigned char *b, int len, |
1004 | unsigned int mask); | |
1005 | int expand_buf(struct iovec *iov, size_t size); | |
5aabfc78 | 1006 | char *print_mac(char *buff, unsigned char *mac, int len); |
1697269c | 1007 | void bump_maxfd(int fd, int *max); |
1697269c | 1008 | int read_write(int fd, unsigned char *packet, int size, int rw); |
7cebd20f | 1009 | |
49333cbd SK |
1010 | int wildcard_match(const char* wildcard, const char* match); |
1011 | ||
f2621c7f | 1012 | /* log.c */ |
5aabfc78 | 1013 | void die(char *message, char *arg1, int exit_code); |
1a6bca81 | 1014 | int log_start(struct passwd *ent_pw, int errfd); |
5aabfc78 | 1015 | int log_reopen(char *log_file); |
f2621c7f SK |
1016 | void my_syslog(int priority, const char *format, ...); |
1017 | void set_log_writer(fd_set *set, int *maxfdp); | |
1018 | void check_log_writer(fd_set *set); | |
5aabfc78 | 1019 | void flush_log(void); |
f2621c7f | 1020 | |
9e4abcb5 | 1021 | /* option.c */ |
5aabfc78 | 1022 | void read_opts (int argc, char **argv, char *compile_opts); |
4cb1b320 SK |
1023 | char *option_string(int prot, unsigned int opt, unsigned char *val, |
1024 | int opt_len, char *buf, int buf_len); | |
824af85b | 1025 | void reread_dhcp(void); |
28866e95 | 1026 | void set_option_bool(unsigned int opt); |
2b5bae9a | 1027 | void reset_option_bool(unsigned int opt); |
28866e95 | 1028 | struct hostsfile *expand_filelist(struct hostsfile *list); |
faafb3f7 SK |
1029 | char *parse_server(char *arg, union mysockaddr *addr, |
1030 | union mysockaddr *source_addr, char *interface, int *flags); | |
9e4abcb5 SK |
1031 | |
1032 | /* forward.c */ | |
1a6bca81 | 1033 | void reply_query(int fd, int family, time_t now); |
5aabfc78 SK |
1034 | void receive_query(struct listener *listen, time_t now); |
1035 | unsigned char *tcp_request(int confd, time_t now, | |
4f7b304f | 1036 | union mysockaddr *local_addr, struct in_addr netmask, int auth_dns); |
5aabfc78 SK |
1037 | void server_gone(struct server *server); |
1038 | struct frec *get_new_frec(time_t now, int *wait); | |
29689cfa | 1039 | int send_from(int fd, int nowild, char *packet, size_t len, |
c72daea8 | 1040 | union mysockaddr *to, struct all_addr *source, |
50303b19 | 1041 | unsigned int iface); |
3be34541 | 1042 | |
9e4abcb5 | 1043 | /* network.c */ |
7622fc06 | 1044 | int indextoname(int fd, int index, char *name); |
824af85b | 1045 | int local_bind(int fd, union mysockaddr *addr, char *intname, int is_tcp); |
1a6bca81 | 1046 | int random_sock(int family); |
824af85b | 1047 | void pre_allocate_sfds(void); |
5aabfc78 SK |
1048 | int reload_servers(char *fname); |
1049 | void check_servers(void); | |
115ac3e4 | 1050 | int enumerate_interfaces(int reset); |
74c95c25 SK |
1051 | void create_wildcard_listeners(void); |
1052 | void create_bound_listeners(int die); | |
1053 | int is_dad_listeners(void); | |
4f7b304f | 1054 | int iface_check(int family, struct all_addr *addr, char *name, int *auth_dns); |
e25db1f2 | 1055 | int loopback_exception(int fd, int family, struct all_addr *addr, char *name); |
3f2873d4 | 1056 | int label_exception(int index, int family, struct all_addr *addr); |
7cebd20f | 1057 | int fix_fd(int fd); |
22ce550e | 1058 | int tcp_interface(int fd, int af); |
c72daea8 SK |
1059 | #ifdef HAVE_IPV6 |
1060 | int set_ipv6pktinfo(int fd); | |
1061 | #endif | |
5d162f20 SK |
1062 | #ifdef HAVE_DHCP6 |
1063 | void join_multicast(int dienow); | |
1064 | #endif | |
3be34541 | 1065 | |
9e4abcb5 | 1066 | /* dhcp.c */ |
7622fc06 | 1067 | #ifdef HAVE_DHCP |
5aabfc78 | 1068 | void dhcp_init(void); |
316e2730 | 1069 | void dhcp_packet(time_t now, int pxe_fd); |
824af85b SK |
1070 | struct dhcp_context *address_available(struct dhcp_context *context, |
1071 | struct in_addr addr, | |
1072 | struct dhcp_netid *netids); | |
1073 | struct dhcp_context *narrow_context(struct dhcp_context *context, | |
1074 | struct in_addr taddr, | |
1075 | struct dhcp_netid *netids); | |
8ef5ada2 | 1076 | int address_allocate(struct dhcp_context *context, |
cdeda28f | 1077 | struct in_addr *addrp, unsigned char *hwaddr, int hw_len, |
3d8df260 | 1078 | struct dhcp_netid *netids, time_t now); |
9009d746 | 1079 | int config_has_mac(struct dhcp_config *config, unsigned char *hwaddr, int len, int type); |
9e4abcb5 SK |
1080 | struct dhcp_config *find_config(struct dhcp_config *configs, |
1081 | struct dhcp_context *context, | |
1082 | unsigned char *clid, int clid_len, | |
cdeda28f SK |
1083 | unsigned char *hwaddr, int hw_len, |
1084 | int hw_type, char *hostname); | |
5aabfc78 | 1085 | void dhcp_read_ethers(void); |
dfa666f2 | 1086 | struct dhcp_config *config_find_by_address(struct dhcp_config *configs, struct in_addr addr); |
5aabfc78 | 1087 | char *host_from_dns(struct in_addr addr); |
7622fc06 | 1088 | #endif |
3be34541 | 1089 | |
9e4abcb5 | 1090 | /* lease.c */ |
7622fc06 | 1091 | #ifdef HAVE_DHCP |
5aabfc78 | 1092 | void lease_update_file(time_t now); |
353ae4d2 | 1093 | void lease_update_dns(int force); |
5aabfc78 | 1094 | void lease_init(time_t now); |
52b92f4d | 1095 | struct dhcp_lease *lease4_allocate(struct in_addr addr); |
c72daea8 | 1096 | #ifdef HAVE_DHCP6 |
4cb1b320 SK |
1097 | struct dhcp_lease *lease6_allocate(struct in6_addr *addrp, int lease_type); |
1098 | struct dhcp_lease *lease6_find(unsigned char *clid, int clid_len, | |
1099 | int lease_type, int iaid, struct in6_addr *addr); | |
a6ebfacf SK |
1100 | void lease6_reset(void); |
1101 | struct dhcp_lease *lease6_find_by_client(struct dhcp_lease *first, int lease_type, unsigned char *clid, int clid_len, int iaid); | |
52b92f4d | 1102 | struct dhcp_lease *lease6_find_by_addr(struct in6_addr *net, int prefix, u64 addr); |
0793380b | 1103 | u64 lease_find_max_addr6(struct dhcp_context *context); |
353ae4d2 | 1104 | void lease_ping_reply(struct in6_addr *sender, unsigned char *packet, char *interface); |
0c050242 | 1105 | void lease_update_slaac(time_t now); |
c72daea8 | 1106 | #endif |
7cebd20f | 1107 | void lease_set_hwaddr(struct dhcp_lease *lease, unsigned char *hwaddr, |
a9ab732e | 1108 | unsigned char *clid, int hw_len, int hw_type, int clid_len, time_t now, int force); |
70c5e3e0 | 1109 | void lease_set_hostname(struct dhcp_lease *lease, char *name, int auth, char *domain, char *config_domain); |
5e9e0efb | 1110 | void lease_set_expires(struct dhcp_lease *lease, unsigned int len, time_t now); |
353ae4d2 | 1111 | void lease_set_interface(struct dhcp_lease *lease, int interface, time_t now); |
cdeda28f | 1112 | struct dhcp_lease *lease_find_by_client(unsigned char *hwaddr, int hw_len, int hw_type, |
0a852541 | 1113 | unsigned char *clid, int clid_len); |
9e4abcb5 | 1114 | struct dhcp_lease *lease_find_by_addr(struct in_addr addr); |
7de060b0 | 1115 | struct in_addr lease_find_max_addr(struct dhcp_context *context); |
9e4abcb5 | 1116 | void lease_prune(struct dhcp_lease *target, time_t now); |
5aabfc78 SK |
1117 | void lease_update_from_configs(void); |
1118 | int do_script_run(time_t now); | |
1119 | void rerun_scripts(void); | |
8b372704 | 1120 | void lease_find_interfaces(time_t now); |
ceae00dd SK |
1121 | #ifdef HAVE_SCRIPT |
1122 | void lease_add_extradata(struct dhcp_lease *lease, unsigned char *data, | |
1123 | unsigned int len, int delim); | |
1124 | #endif | |
7622fc06 | 1125 | #endif |
a84fa1d0 | 1126 | |
9e4abcb5 | 1127 | /* rfc2131.c */ |
7622fc06 | 1128 | #ifdef HAVE_DHCP |
824af85b | 1129 | size_t dhcp_reply(struct dhcp_context *context, char *iface_name, int int_index, |
7de060b0 | 1130 | size_t sz, time_t now, int unicast_dest, int *is_inform, int pxe_fd, struct in_addr fallback); |
9009d746 SK |
1131 | unsigned char *extended_hwaddr(int hwtype, int hwlen, unsigned char *hwaddr, |
1132 | int clid_len, unsigned char *clid, int *len_out); | |
7622fc06 | 1133 | #endif |
3be34541 SK |
1134 | |
1135 | /* dnsmasq.c */ | |
7622fc06 | 1136 | #ifdef HAVE_DHCP |
5e9e0efb | 1137 | int make_icmp_sock(void); |
5aabfc78 | 1138 | int icmp_ping(struct in_addr addr); |
7622fc06 | 1139 | #endif |
353ae4d2 | 1140 | void send_alarm(time_t event, time_t now); |
c72daea8 | 1141 | void send_event(int fd, int event, int data, char *msg); |
5aabfc78 | 1142 | void clear_cache_and_reload(time_t now); |
8ef5ada2 | 1143 | void poll_resolv(int force, int do_reload, time_t now); |
44a2a316 | 1144 | |
0a852541 | 1145 | /* netlink.c */ |
5e9e0efb | 1146 | #ifdef HAVE_LINUX_NETWORK |
5aabfc78 | 1147 | void netlink_init(void); |
1f776932 | 1148 | void netlink_multicast(time_t now); |
5e9e0efb SK |
1149 | #endif |
1150 | ||
1151 | /* bpf.c */ | |
824af85b | 1152 | #ifdef HAVE_BSD_NETWORK |
5aabfc78 SK |
1153 | void init_bpf(void); |
1154 | void send_via_bpf(struct dhcp_packet *mess, size_t len, | |
5e9e0efb | 1155 | struct in_addr iface_addr, struct ifreq *ifr); |
0a852541 | 1156 | #endif |
3d8df260 | 1157 | |
824af85b | 1158 | /* bpf.c or netlink.c */ |
28866e95 | 1159 | int iface_enumerate(int family, void *parm, int (callback)()); |
824af85b | 1160 | |
3d8df260 SK |
1161 | /* dbus.c */ |
1162 | #ifdef HAVE_DBUS | |
5aabfc78 SK |
1163 | char *dbus_init(void); |
1164 | void check_dbus_listeners(fd_set *rset, fd_set *wset, fd_set *eset); | |
1165 | void set_dbus_listeners(int *maxfdp, fd_set *rset, fd_set *wset, fd_set *eset); | |
316e2730 | 1166 | # ifdef HAVE_DHCP |
1f15b81d | 1167 | void emit_dbus_signal(int action, struct dhcp_lease *lease, char *hostname); |
316e2730 | 1168 | # endif |
3d8df260 | 1169 | #endif |
1697269c | 1170 | |
13d86c73 JD |
1171 | /* ipset.c */ |
1172 | #ifdef HAVE_IPSET | |
1173 | void ipset_init(void); | |
1174 | int add_to_ipset(const char *setname, const struct all_addr *ipaddr, int flags, int remove); | |
1175 | #endif | |
1176 | ||
1697269c | 1177 | /* helper.c */ |
0068301d | 1178 | #if defined(HAVE_SCRIPT) |
1a6bca81 | 1179 | int create_helper(int event_fd, int err_fd, uid_t uid, gid_t gid, long max_fd); |
5aabfc78 SK |
1180 | void helper_write(void); |
1181 | void queue_script(int action, struct dhcp_lease *lease, | |
1182 | char *hostname, time_t now); | |
a9530964 SK |
1183 | #ifdef HAVE_TFTP |
1184 | void queue_tftp(off_t file_len, char *filename, union mysockaddr *peer); | |
1185 | #endif | |
1697269c | 1186 | int helper_buf_empty(void); |
5aabfc78 | 1187 | #endif |
832af0ba SK |
1188 | |
1189 | /* tftp.c */ | |
1190 | #ifdef HAVE_TFTP | |
5aabfc78 SK |
1191 | void tftp_request(struct listener *listen, time_t now); |
1192 | void check_tftp_listeners(fd_set *rset, time_t now); | |
a9530964 | 1193 | int do_tftp_script_run(void); |
832af0ba | 1194 | #endif |
7de060b0 SK |
1195 | |
1196 | /* conntrack.c */ | |
1197 | #ifdef HAVE_CONNTRACK | |
1198 | int get_incoming_mark(union mysockaddr *peer_addr, struct all_addr *local_addr, | |
1199 | int istcp, unsigned int *markp); | |
1200 | #endif | |
c72daea8 | 1201 | |
52b92f4d SK |
1202 | /* dhcp6.c */ |
1203 | #ifdef HAVE_DHCP6 | |
1204 | void dhcp6_init(void); | |
1205 | void dhcp6_packet(time_t now); | |
a6ebfacf | 1206 | struct dhcp_context *address6_allocate(struct dhcp_context *context, unsigned char *clid, int clid_len, |
c630924d | 1207 | int iaid, int serial, struct dhcp_netid *netids, int plain_range, struct in6_addr *ans); |
de92b479 | 1208 | int config_valid(struct dhcp_config *config, struct dhcp_context *context, struct in6_addr *addr); |
52b92f4d SK |
1209 | struct dhcp_context *address6_available(struct dhcp_context *context, |
1210 | struct in6_addr *taddr, | |
c630924d SK |
1211 | struct dhcp_netid *netids, |
1212 | int plain_range); | |
37c9cceb SK |
1213 | struct dhcp_context *address6_valid(struct dhcp_context *context, |
1214 | struct in6_addr *taddr, | |
c630924d SK |
1215 | struct dhcp_netid *netids, |
1216 | int plain_range); | |
4cb1b320 SK |
1217 | struct dhcp_config *find_config6(struct dhcp_config *configs, |
1218 | struct dhcp_context *context, | |
1219 | unsigned char *duid, int duid_len, | |
1220 | char *hostname); | |
ceae00dd SK |
1221 | struct dhcp_config *config_find_by_address6(struct dhcp_config *configs, struct in6_addr *net, |
1222 | int prefix, u64 addr); | |
4cb1b320 | 1223 | void make_duid(time_t now); |
1f776932 | 1224 | void dhcp_construct_contexts(time_t now); |
52b92f4d SK |
1225 | #endif |
1226 | ||
c72daea8 SK |
1227 | /* rfc3315.c */ |
1228 | #ifdef HAVE_DHCP6 | |
1d0f91c4 SK |
1229 | unsigned short dhcp6_reply(struct dhcp_context *context, int interface, char *iface_name, |
1230 | struct in6_addr *fallback, size_t sz, int is_multicast, time_t now); | |
c72daea8 | 1231 | #endif |
4cb1b320 SK |
1232 | |
1233 | /* dhcp-common.c */ | |
ceae00dd | 1234 | #ifdef HAVE_DHCP |
4cb1b320 SK |
1235 | void dhcp_common_init(void); |
1236 | ssize_t recv_dhcp_packet(int fd, struct msghdr *msg); | |
1237 | struct dhcp_netid *run_tag_if(struct dhcp_netid *input); | |
1238 | struct dhcp_netid *option_filter(struct dhcp_netid *tags, struct dhcp_netid *context_tags, | |
1239 | struct dhcp_opt *opts); | |
1240 | int match_netid(struct dhcp_netid *check, struct dhcp_netid *pool, int negonly); | |
1241 | char *strip_hostname(char *hostname); | |
1242 | void log_tags(struct dhcp_netid *netid, u32 xid); | |
3634c54e | 1243 | int match_bytes(struct dhcp_opt *o, unsigned char *p, int len); |
ceae00dd | 1244 | void dhcp_update_configs(struct dhcp_config *configs); |
40ef23b5 | 1245 | void display_opts(void); |
bd08ae67 SK |
1246 | int lookup_dhcp_opt(int prot, char *name); |
1247 | int lookup_dhcp_len(int prot, int val); | |
40ef23b5 SK |
1248 | char *option_string(int prot, unsigned int opt, unsigned char *val, |
1249 | int opt_len, char *buf, int buf_len); | |
9380ba70 SK |
1250 | #ifdef HAVE_LINUX_NETWORK |
1251 | void bindtodevice(int fd); | |
1252 | #endif | |
843c96b4 | 1253 | # ifdef HAVE_DHCP6 |
40ef23b5 | 1254 | void display_opts6(void); |
843c96b4 | 1255 | # endif |
1f776932 | 1256 | void log_context(int family, struct dhcp_context *context); |
c72daea8 | 1257 | #endif |
c5ad4e79 SK |
1258 | |
1259 | /* outpacket.c */ | |
1260 | #ifdef HAVE_DHCP6 | |
1261 | void end_opt6(int container); | |
1262 | int save_counter(int newval); | |
1263 | void *expand(size_t headroom); | |
1264 | int new_opt6(int opt); | |
1265 | void *put_opt6(void *data, size_t len); | |
1266 | void put_opt6_long(unsigned int val); | |
1267 | void put_opt6_short(unsigned int val); | |
1268 | void put_opt6_char(unsigned int val); | |
1269 | void put_opt6_string(char *s); | |
1270 | #endif | |
1271 | ||
1272 | /* radv.c */ | |
1273 | #ifdef HAVE_DHCP6 | |
1274 | void ra_init(time_t now); | |
1f776932 | 1275 | void icmp6_packet(time_t now); |
c5ad4e79 | 1276 | time_t periodic_ra(time_t now); |
353ae4d2 SK |
1277 | void ra_start_unsolicted(time_t now, struct dhcp_context *context); |
1278 | #endif | |
1279 | ||
1280 | /* slaac.c */ | |
1281 | #ifdef HAVE_DHCP6 | |
a9ab732e | 1282 | void slaac_add_addrs(struct dhcp_lease *lease, time_t now, int force); |
353ae4d2 SK |
1283 | time_t periodic_slaac(time_t now, struct dhcp_lease *leases); |
1284 | void slaac_ping_reply(struct in6_addr *sender, unsigned char *packet, char *interface, struct dhcp_lease *leases); | |
c5ad4e79 | 1285 | #endif |