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59546085 | 1 | /* dnsmasq is Copyright (c) 2000-2012 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 | ||
59546085 | 17 | #define COPYRIGHT "Copyright (c) 2000-2012 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 SK |
58 | |
59 | #include "dns_protocol.h" | |
60 | #include "dhcp_protocol.h" | |
c72daea8 SK |
61 | #ifdef HAVE_DHCP6 |
62 | #include "dhcp6_protocol.h" | |
c5ad4e79 | 63 | #include "radv_protocol.h" |
c72daea8 | 64 | #endif |
572b41eb | 65 | |
b8187c80 | 66 | #define gettext_noop(S) (S) |
824af85b | 67 | #ifndef LOCALEDIR |
b8187c80 SK |
68 | # define _(S) (S) |
69 | #else | |
70 | # include <libintl.h> | |
71 | # include <locale.h> | |
72 | # define _(S) gettext(S) | |
73 | #endif | |
74 | ||
9e4abcb5 SK |
75 | #include <arpa/inet.h> |
76 | #include <sys/stat.h> | |
9e4abcb5 | 77 | #include <sys/ioctl.h> |
824af85b | 78 | #if defined(HAVE_SOLARIS_NETWORK) |
316e2730 | 79 | # include <sys/sockio.h> |
824af85b | 80 | #endif |
9e4abcb5 | 81 | #include <sys/select.h> |
feba5c1d | 82 | #include <sys/wait.h> |
9e4abcb5 | 83 | #include <sys/time.h> |
f2621c7f | 84 | #include <sys/un.h> |
8a911ccc | 85 | #include <limits.h> |
9e4abcb5 | 86 | #include <net/if.h> |
316e2730 SK |
87 | #if defined(HAVE_SOLARIS_NETWORK) && !defined(ifr_mtu) |
88 | /* Some solaris net/if./h omit this. */ | |
89 | # define ifr_mtu ifr_ifru.ifru_metric | |
90 | #endif | |
9e4abcb5 SK |
91 | #include <unistd.h> |
92 | #include <stdio.h> | |
93 | #include <string.h> | |
94 | #include <stdlib.h> | |
95 | #include <fcntl.h> | |
96 | #include <ctype.h> | |
97 | #include <signal.h> | |
9e038946 | 98 | #include <stddef.h> |
9e4abcb5 SK |
99 | #include <time.h> |
100 | #include <errno.h> | |
101 | #include <pwd.h> | |
102 | #include <grp.h> | |
f6b7dc47 | 103 | #include <stdarg.h> |
572b41eb | 104 | #if defined(__OpenBSD__) || defined(__NetBSD__) || defined(__sun__) || defined (__sun) || defined (__ANDROID__) |
44a2a316 SK |
105 | # include <netinet/if_ether.h> |
106 | #else | |
107 | # include <net/ethernet.h> | |
108 | #endif | |
9e4abcb5 SK |
109 | #include <net/if_arp.h> |
110 | #include <netinet/in_systm.h> | |
111 | #include <netinet/ip.h> | |
3be34541 | 112 | #include <netinet/ip_icmp.h> |
5e9e0efb | 113 | #include <sys/uio.h> |
849a8357 SK |
114 | #include <syslog.h> |
115 | #include <dirent.h> | |
5e9e0efb | 116 | #ifndef HAVE_LINUX_NETWORK |
44a2a316 | 117 | # include <net/if_dl.h> |
9e4abcb5 | 118 | #endif |
5e9e0efb | 119 | |
824af85b | 120 | #if defined(HAVE_LINUX_NETWORK) |
5e9e0efb SK |
121 | #include <linux/capability.h> |
122 | /* There doesn't seem to be a universally-available | |
9e038946 | 123 | userpace header for these. */ |
5e9e0efb | 124 | extern int capset(cap_user_header_t header, cap_user_data_t data); |
9e038946 SK |
125 | extern int capget(cap_user_header_t header, cap_user_data_t data); |
126 | #define LINUX_CAPABILITY_VERSION_1 0x19980330 | |
127 | #define LINUX_CAPABILITY_VERSION_2 0x20071026 | |
1a6bca81 | 128 | #define LINUX_CAPABILITY_VERSION_3 0x20080522 |
9e038946 | 129 | |
5e9e0efb | 130 | #include <sys/prctl.h> |
7622fc06 | 131 | #elif defined(HAVE_SOLARIS_NETWORK) |
824af85b | 132 | #include <priv.h> |
5e9e0efb | 133 | #endif |
9e4abcb5 | 134 | |
824af85b | 135 | /* daemon is function in the C library.... */ |
5aabfc78 SK |
136 | #define daemon dnsmasq_daemon |
137 | ||
138 | /* Async event queue */ | |
139 | struct event_desc { | |
c72daea8 | 140 | int event, data, msg_sz; |
5aabfc78 SK |
141 | }; |
142 | ||
143 | #define EVENT_RELOAD 1 | |
144 | #define EVENT_DUMP 2 | |
145 | #define EVENT_ALARM 3 | |
146 | #define EVENT_TERM 4 | |
147 | #define EVENT_CHILD 5 | |
148 | #define EVENT_REOPEN 6 | |
149 | #define EVENT_EXITED 7 | |
150 | #define EVENT_KILLED 8 | |
151 | #define EVENT_EXEC_ERR 9 | |
152 | #define EVENT_PIPE_ERR 10 | |
9e038946 | 153 | #define EVENT_USER_ERR 11 |
1a6bca81 SK |
154 | #define EVENT_CAP_ERR 12 |
155 | #define EVENT_PIDFILE 13 | |
156 | #define EVENT_HUSER_ERR 14 | |
157 | #define EVENT_GROUP_ERR 15 | |
158 | #define EVENT_DIE 16 | |
159 | #define EVENT_LOG_ERR 17 | |
7622fc06 | 160 | #define EVENT_FORK_ERR 18 |
c72daea8 | 161 | #define EVENT_LUA_ERR 19 |
5aabfc78 SK |
162 | |
163 | /* Exit codes. */ | |
164 | #define EC_GOOD 0 | |
165 | #define EC_BADCONF 1 | |
166 | #define EC_BADNET 2 | |
167 | #define EC_FILE 3 | |
168 | #define EC_NOMEM 4 | |
169 | #define EC_MISC 5 | |
170 | #define EC_INIT_OFFSET 10 | |
171 | ||
0a852541 SK |
172 | /* Min buffer size: we check after adding each record, so there must be |
173 | memory for the largest packet, and the largest record so the | |
174 | min for DNS is PACKETSZ+MAXDNAME+RRFIXEDSZ which is < 1000. | |
175 | This might be increased is EDNS packet size if greater than the minimum. | |
cdeda28f SK |
176 | */ |
177 | #define DNSMASQ_PACKETSZ PACKETSZ+MAXDNAME+RRFIXEDSZ | |
44a2a316 | 178 | |
572b41eb | 179 | /* Trust the compiler dead-code eliminator.... */ |
28866e95 SK |
180 | #define option_bool(x) (((x) < 32) ? daemon->options & (1u << (x)) : daemon->options2 & (1u << ((x) - 32))) |
181 | ||
182 | #define OPT_BOGUSPRIV 0 | |
183 | #define OPT_FILTER 1 | |
184 | #define OPT_LOG 2 | |
185 | #define OPT_SELFMX 3 | |
186 | #define OPT_NO_HOSTS 4 | |
187 | #define OPT_NO_POLL 5 | |
188 | #define OPT_DEBUG 6 | |
189 | #define OPT_ORDER 7 | |
190 | #define OPT_NO_RESOLV 8 | |
191 | #define OPT_EXPAND 9 | |
192 | #define OPT_LOCALMX 10 | |
193 | #define OPT_NO_NEG 11 | |
194 | #define OPT_NODOTS_LOCAL 12 | |
195 | #define OPT_NOWILD 13 | |
196 | #define OPT_ETHERS 14 | |
197 | #define OPT_RESOLV_DOMAIN 15 | |
198 | #define OPT_NO_FORK 16 | |
199 | #define OPT_AUTHORITATIVE 17 | |
200 | #define OPT_LOCALISE 18 | |
201 | #define OPT_DBUS 19 | |
202 | #define OPT_DHCP_FQDN 20 | |
203 | #define OPT_NO_PING 21 | |
204 | #define OPT_LEASE_RO 22 | |
205 | #define OPT_ALL_SERVERS 23 | |
206 | #define OPT_RELOAD 24 | |
207 | #define OPT_LOCAL_REBIND 25 | |
208 | #define OPT_TFTP_SECURE 26 | |
209 | #define OPT_TFTP_NOBLOCK 27 | |
210 | #define OPT_LOG_OPTS 28 | |
211 | #define OPT_TFTP_APREF 29 | |
212 | #define OPT_NO_OVERRIDE 30 | |
213 | #define OPT_NO_REBIND 31 | |
214 | #define OPT_ADD_MAC 32 | |
215 | #define OPT_DNSSEC 33 | |
7de060b0 SK |
216 | #define OPT_CONSEC_ADDR 34 |
217 | #define OPT_CONNTRACK 35 | |
c72daea8 | 218 | #define OPT_FQDN_UPDATE 36 |
c5ad4e79 SK |
219 | #define OPT_RA 37 |
220 | #define OPT_LAST 38 | |
9e4abcb5 | 221 | |
7622fc06 SK |
222 | /* extra flags for my_syslog, we use a couple of facilities since they are known |
223 | not to occupy the same bits as priorities, no matter how syslog.h is set up. */ | |
224 | #define MS_TFTP LOG_USER | |
225 | #define MS_DHCP LOG_DAEMON | |
226 | ||
9e4abcb5 SK |
227 | struct all_addr { |
228 | union { | |
229 | struct in_addr addr4; | |
230 | #ifdef HAVE_IPV6 | |
231 | struct in6_addr addr6; | |
232 | #endif | |
233 | } addr; | |
234 | }; | |
235 | ||
236 | struct bogus_addr { | |
237 | struct in_addr addr; | |
238 | struct bogus_addr *next; | |
239 | }; | |
240 | ||
1cff166d SK |
241 | /* dns doctor param */ |
242 | struct doctor { | |
73a08a24 | 243 | struct in_addr in, end, out, mask; |
1cff166d SK |
244 | struct doctor *next; |
245 | }; | |
246 | ||
0a852541 SK |
247 | struct mx_srv_record { |
248 | char *name, *target; | |
3d8df260 SK |
249 | int issrv, srvport, priority, weight; |
250 | unsigned int offset; | |
0a852541 | 251 | struct mx_srv_record *next; |
de37951c SK |
252 | }; |
253 | ||
1a6bca81 SK |
254 | struct naptr { |
255 | char *name, *replace, *regexp, *services, *flags; | |
256 | unsigned int order, pref; | |
257 | struct naptr *next; | |
258 | }; | |
259 | ||
0a852541 | 260 | struct txt_record { |
28866e95 SK |
261 | char *name; |
262 | unsigned char *txt; | |
0a852541 SK |
263 | unsigned short class, len; |
264 | struct txt_record *next; | |
f6b7dc47 SK |
265 | }; |
266 | ||
832af0ba SK |
267 | struct ptr_record { |
268 | char *name, *ptr; | |
269 | struct ptr_record *next; | |
270 | }; | |
271 | ||
9009d746 SK |
272 | struct cname { |
273 | char *alias, *target; | |
274 | struct cname *next; | |
275 | }; | |
276 | ||
f2621c7f SK |
277 | struct interface_name { |
278 | char *name; /* domain name */ | |
279 | char *intr; /* interface name */ | |
280 | struct interface_name *next; | |
281 | }; | |
282 | ||
9e4abcb5 SK |
283 | union bigname { |
284 | char name[MAXDNAME]; | |
285 | union bigname *next; /* freelist */ | |
286 | }; | |
287 | ||
288 | struct crec { | |
289 | struct crec *next, *prev, *hash_next; | |
290 | time_t ttd; /* time to die */ | |
fd9fa481 SK |
291 | int uid; |
292 | union { | |
293 | struct all_addr addr; | |
294 | struct { | |
295 | struct crec *cache; | |
296 | int uid; | |
297 | } cname; | |
298 | } addr; | |
9e4abcb5 SK |
299 | unsigned short flags; |
300 | union { | |
301 | char sname[SMALLDNAME]; | |
302 | union bigname *bname; | |
303 | char *namep; | |
304 | } name; | |
305 | }; | |
306 | ||
28866e95 SK |
307 | #define F_IMMORTAL (1u<<0) |
308 | #define F_NAMEP (1u<<1) | |
309 | #define F_REVERSE (1u<<2) | |
310 | #define F_FORWARD (1u<<3) | |
311 | #define F_DHCP (1u<<4) | |
312 | #define F_NEG (1u<<5) | |
313 | #define F_HOSTS (1u<<6) | |
314 | #define F_IPV4 (1u<<7) | |
315 | #define F_IPV6 (1u<<8) | |
316 | #define F_BIGNAME (1u<<9) | |
317 | #define F_NXDOMAIN (1u<<10) | |
318 | #define F_CNAME (1u<<11) | |
319 | #define F_NOERR (1u<<12) | |
320 | #define F_CONFIG (1u<<13) | |
321 | /* below here are only valid as args to log_query: cache | |
322 | entries are limited to 16 bits */ | |
323 | #define F_UPSTREAM (1u<<16) | |
324 | #define F_RRNAME (1u<<17) | |
325 | #define F_SERVER (1u<<18) | |
326 | #define F_QUERY (1u<<19) | |
28866e95 | 327 | |
9e4abcb5 SK |
328 | |
329 | /* struct sockaddr is not large enough to hold any address, | |
cdeda28f | 330 | and specifically not big enough to hold an IPv6 address. |
9e4abcb5 SK |
331 | Blech. Roll our own. */ |
332 | union mysockaddr { | |
333 | struct sockaddr sa; | |
334 | struct sockaddr_in in; | |
7622fc06 | 335 | #if defined(HAVE_IPV6) |
9e4abcb5 SK |
336 | struct sockaddr_in6 in6; |
337 | #endif | |
338 | }; | |
339 | ||
0a852541 SK |
340 | #define SERV_FROM_RESOLV 1 /* 1 for servers from resolv, 0 for command line. */ |
341 | #define SERV_NO_ADDR 2 /* no server, this domain is local only */ | |
342 | #define SERV_LITERAL_ADDRESS 4 /* addr is the answer, not the server */ | |
5aabfc78 SK |
343 | #define SERV_HAS_DOMAIN 8 /* server for one domain only */ |
344 | #define SERV_HAS_SOURCE 16 /* source address defined */ | |
0a852541 SK |
345 | #define SERV_FOR_NODOTS 32 /* server for names with no domain part only */ |
346 | #define SERV_WARNED_RECURSIVE 64 /* avoid warning spam */ | |
3d8df260 SK |
347 | #define SERV_FROM_DBUS 128 /* 1 if source is DBus */ |
348 | #define SERV_MARK 256 /* for mark-and-delete */ | |
9e4abcb5 | 349 | #define SERV_TYPE (SERV_HAS_DOMAIN | SERV_FOR_NODOTS) |
824af85b | 350 | #define SERV_COUNTED 512 /* workspace for log code */ |
8ef5ada2 SK |
351 | #define SERV_USE_RESOLV 1024 /* forward this domain in the normal way */ |
352 | #define SERV_NO_REBIND 2048 /* inhibit dns-rebind protection */ | |
9e4abcb5 SK |
353 | |
354 | struct serverfd { | |
355 | int fd; | |
356 | union mysockaddr source_addr; | |
824af85b | 357 | char interface[IF_NAMESIZE+1]; |
9e4abcb5 SK |
358 | struct serverfd *next; |
359 | }; | |
360 | ||
1a6bca81 SK |
361 | struct randfd { |
362 | int fd; | |
363 | unsigned short refcount, family; | |
364 | }; | |
365 | ||
9e4abcb5 SK |
366 | struct server { |
367 | union mysockaddr addr, source_addr; | |
824af85b | 368 | char interface[IF_NAMESIZE+1]; |
1697269c | 369 | struct serverfd *sfd; |
9e4abcb5 | 370 | char *domain; /* set if this server only handles a domain. */ |
feba5c1d | 371 | int flags, tcpfd; |
824af85b | 372 | unsigned int queries, failed_queries; |
9e4abcb5 SK |
373 | struct server *next; |
374 | }; | |
375 | ||
9e4abcb5 SK |
376 | struct irec { |
377 | union mysockaddr addr; | |
f6b7dc47 | 378 | struct in_addr netmask; /* only valid for IPv4 */ |
74c95c25 | 379 | int tftp_ok, mtu, done, dad; |
8ef5ada2 | 380 | char *name; |
9e4abcb5 SK |
381 | struct irec *next; |
382 | }; | |
383 | ||
44a2a316 | 384 | struct listener { |
832af0ba | 385 | int fd, tcpfd, tftpfd, family; |
f6b7dc47 | 386 | struct irec *iface; /* only valid for non-wildcard */ |
44a2a316 SK |
387 | struct listener *next; |
388 | }; | |
389 | ||
9e4abcb5 SK |
390 | /* interface and address parms from command line. */ |
391 | struct iname { | |
392 | char *name; | |
393 | union mysockaddr addr; | |
de37951c | 394 | int isloop, used; |
9e4abcb5 SK |
395 | struct iname *next; |
396 | }; | |
397 | ||
398 | /* resolv-file parms from command-line */ | |
399 | struct resolvc { | |
400 | struct resolvc *next; | |
3d8df260 SK |
401 | int is_default, logged; |
402 | time_t mtime; | |
9e4abcb5 SK |
403 | char *name; |
404 | }; | |
405 | ||
28866e95 | 406 | /* adn-hosts parms from command-line (also dhcp-hostsfile and dhcp-optsfile */ |
7622fc06 SK |
407 | #define AH_DIR 1 |
408 | #define AH_INACTIVE 2 | |
fd9fa481 SK |
409 | struct hostsfile { |
410 | struct hostsfile *next; | |
7622fc06 | 411 | int flags; |
fd9fa481 | 412 | char *fname; |
cdeda28f | 413 | int index; /* matches to cache entries for logging */ |
fd9fa481 SK |
414 | }; |
415 | ||
28866e95 SK |
416 | #define FREC_NOREBIND 1 |
417 | #define FREC_CHECKING_DISABLED 2 | |
418 | ||
9e4abcb5 SK |
419 | struct frec { |
420 | union mysockaddr source; | |
44a2a316 | 421 | struct all_addr dest; |
832af0ba | 422 | struct server *sentto; /* NULL means free */ |
1a6bca81 SK |
423 | struct randfd *rfd4; |
424 | #ifdef HAVE_IPV6 | |
425 | struct randfd *rfd6; | |
426 | #endif | |
dfa666f2 | 427 | unsigned int iface; |
9e4abcb5 | 428 | unsigned short orig_id, new_id; |
28866e95 | 429 | int fd, forwardall, flags; |
fd9fa481 | 430 | unsigned int crc; |
9e4abcb5 SK |
431 | time_t time; |
432 | struct frec *next; | |
433 | }; | |
434 | ||
1697269c SK |
435 | /* actions in the daemon->helper RPC */ |
436 | #define ACTION_DEL 1 | |
437 | #define ACTION_OLD_HOSTNAME 2 | |
438 | #define ACTION_OLD 3 | |
439 | #define ACTION_ADD 4 | |
440 | ||
4cb1b320 SK |
441 | #define LEASE_NEW 1 /* newly created */ |
442 | #define LEASE_CHANGED 2 /* modified */ | |
443 | #define LEASE_AUX_CHANGED 4 /* CLID or expiry changed */ | |
444 | #define LEASE_AUTH_NAME 8 /* hostname came from config, not from client */ | |
445 | #define LEASE_USED 16 /* used this DHCPv6 transaction */ | |
446 | #define LEASE_NA 32 /* IPv6 no-temporary lease */ | |
447 | #define LEASE_TA 64 /* IPv6 temporary lease */ | |
448 | ||
9e4abcb5 SK |
449 | struct dhcp_lease { |
450 | int clid_len; /* length of client identifier */ | |
451 | unsigned char *clid; /* clientid */ | |
452 | char *hostname, *fqdn; /* name from client-hostname option or config */ | |
1697269c | 453 | char *old_hostname; /* hostname before it moved to another lease */ |
4cb1b320 | 454 | int flags; |
9e4abcb5 | 455 | time_t expires; /* lease expiry */ |
5e9e0efb SK |
456 | #ifdef HAVE_BROKEN_RTC |
457 | unsigned int length; | |
458 | #endif | |
52b92f4d SK |
459 | int hwaddr_len, hwaddr_type; /* hw_type used for iaid in v6 */ |
460 | unsigned char hwaddr[DHCP_CHADDR_MAX]; /* also IPv6 address */ | |
1f15b81d | 461 | struct in_addr addr, override, giaddr; |
316e2730 SK |
462 | unsigned char *extradata; |
463 | unsigned int extradata_len, extradata_size; | |
824af85b | 464 | int last_interface; |
9e4abcb5 SK |
465 | struct dhcp_lease *next; |
466 | }; | |
467 | ||
a222641c SK |
468 | struct dhcp_netid { |
469 | char *net; | |
470 | struct dhcp_netid *next; | |
471 | }; | |
472 | ||
26128d27 SK |
473 | struct dhcp_netid_list { |
474 | struct dhcp_netid *list; | |
475 | struct dhcp_netid_list *next; | |
476 | }; | |
1697269c | 477 | |
8ef5ada2 SK |
478 | struct tag_if { |
479 | struct dhcp_netid_list *set; | |
480 | struct dhcp_netid *tag; | |
481 | struct tag_if *next; | |
482 | }; | |
483 | ||
9009d746 SK |
484 | struct hwaddr_config { |
485 | int hwaddr_len, hwaddr_type; | |
486 | unsigned char hwaddr[DHCP_CHADDR_MAX]; | |
487 | unsigned int wildcard_mask; | |
488 | struct hwaddr_config *next; | |
489 | }; | |
490 | ||
9e4abcb5 | 491 | struct dhcp_config { |
33820b7e | 492 | unsigned int flags; |
9e4abcb5 SK |
493 | int clid_len; /* length of client identifier */ |
494 | unsigned char *clid; /* clientid */ | |
9009d746 | 495 | char *hostname, *domain; |
8ef5ada2 | 496 | struct dhcp_netid_list *netid; |
52b92f4d SK |
497 | #ifdef HAVE_DHCP6 |
498 | struct in6_addr addr6; | |
499 | #endif | |
9e4abcb5 | 500 | struct in_addr addr; |
849a8357 | 501 | time_t decline_time; |
9009d746 SK |
502 | unsigned int lease_time; |
503 | struct hwaddr_config *hwaddr; | |
9e4abcb5 SK |
504 | struct dhcp_config *next; |
505 | }; | |
506 | ||
4cb1b320 SK |
507 | #define have_config(config, mask) ((config) && ((config)->flags & (mask))) |
508 | ||
0a852541 SK |
509 | #define CONFIG_DISABLE 1 |
510 | #define CONFIG_CLID 2 | |
0a852541 SK |
511 | #define CONFIG_TIME 8 |
512 | #define CONFIG_NAME 16 | |
513 | #define CONFIG_ADDR 32 | |
0a852541 | 514 | #define CONFIG_NOCLID 128 |
849a8357 SK |
515 | #define CONFIG_FROM_ETHERS 256 /* entry created by /etc/ethers */ |
516 | #define CONFIG_ADDR_HOSTS 512 /* address added by from /etc/hosts */ | |
517 | #define CONFIG_DECLINED 1024 /* address declined by client */ | |
5aabfc78 | 518 | #define CONFIG_BANK 2048 /* from dhcp hosts file */ |
52b92f4d | 519 | #define CONFIG_ADDR6 4096 |
33820b7e | 520 | |
9e4abcb5 | 521 | struct dhcp_opt { |
cdeda28f | 522 | int opt, len, flags; |
73a08a24 SK |
523 | union { |
524 | int encap; | |
525 | unsigned int wildcard_mask; | |
526 | unsigned char *vendor_class; | |
527 | } u; | |
528 | unsigned char *val; | |
26128d27 | 529 | struct dhcp_netid *netid; |
9e4abcb5 | 530 | struct dhcp_opt *next; |
a84fa1d0 SK |
531 | }; |
532 | ||
cdeda28f SK |
533 | #define DHOPT_ADDR 1 |
534 | #define DHOPT_STRING 2 | |
6b01084f | 535 | #define DHOPT_ENCAPSULATE 4 |
73a08a24 | 536 | #define DHOPT_ENCAP_MATCH 8 |
6b01084f | 537 | #define DHOPT_FORCE 16 |
824af85b | 538 | #define DHOPT_BANK 32 |
73a08a24 SK |
539 | #define DHOPT_ENCAP_DONE 64 |
540 | #define DHOPT_MATCH 128 | |
541 | #define DHOPT_VENDOR 256 | |
542 | #define DHOPT_HEX 512 | |
7622fc06 | 543 | #define DHOPT_VENDOR_MATCH 1024 |
316e2730 | 544 | #define DHOPT_RFC3925 2048 |
7de060b0 | 545 | #define DHOPT_TAGOK 4096 |
4cb1b320 | 546 | #define DHOPT_ADDR6 8192 |
cdeda28f | 547 | |
26128d27 | 548 | struct dhcp_boot { |
7de060b0 | 549 | char *file, *sname, *tftp_sname; |
26128d27 SK |
550 | struct in_addr next_server; |
551 | struct dhcp_netid *netid; | |
552 | struct dhcp_boot *next; | |
553 | }; | |
554 | ||
7622fc06 SK |
555 | struct pxe_service { |
556 | unsigned short CSA, type; | |
751d6f4a | 557 | char *menu, *basename, *sname; |
7622fc06 SK |
558 | struct in_addr server; |
559 | struct dhcp_netid *netid; | |
560 | struct pxe_service *next; | |
561 | }; | |
562 | ||
f2621c7f SK |
563 | #define MATCH_VENDOR 1 |
564 | #define MATCH_USER 2 | |
565 | #define MATCH_CIRCUIT 3 | |
566 | #define MATCH_REMOTE 4 | |
567 | #define MATCH_SUBSCRIBER 5 | |
568 | ||
569 | /* vendorclass, userclass, remote-id or cicuit-id */ | |
a84fa1d0 | 570 | struct dhcp_vendor { |
a5c72ab5 SK |
571 | int len, match_type; |
572 | unsigned int enterprise; | |
a222641c SK |
573 | char *data; |
574 | struct dhcp_netid netid; | |
a84fa1d0 SK |
575 | struct dhcp_vendor *next; |
576 | }; | |
9e4abcb5 | 577 | |
cdeda28f SK |
578 | struct dhcp_mac { |
579 | unsigned int mask; | |
580 | int hwaddr_len, hwaddr_type; | |
581 | unsigned char hwaddr[DHCP_CHADDR_MAX]; | |
582 | struct dhcp_netid netid; | |
583 | struct dhcp_mac *next; | |
584 | }; | |
585 | ||
832af0ba SK |
586 | struct dhcp_bridge { |
587 | char iface[IF_NAMESIZE]; | |
588 | struct dhcp_bridge *alias, *next; | |
589 | }; | |
832af0ba | 590 | |
9009d746 SK |
591 | struct cond_domain { |
592 | char *domain; | |
593 | struct in_addr start, end; | |
d74942a0 SK |
594 | #ifdef HAVE_IPV6 |
595 | struct in6_addr start6, end6; | |
596 | #endif | |
597 | int is6; | |
9009d746 SK |
598 | struct cond_domain *next; |
599 | }; | |
600 | ||
9e4abcb5 | 601 | struct dhcp_context { |
feba5c1d | 602 | unsigned int lease_time, addr_epoch; |
0a852541 SK |
603 | struct in_addr netmask, broadcast; |
604 | struct in_addr local, router; | |
a84fa1d0 | 605 | struct in_addr start, end; /* range of available addresses */ |
c72daea8 SK |
606 | #ifdef HAVE_DHCP6 |
607 | struct in6_addr start6, end6; /* range of available addresses */ | |
e44ddcac | 608 | struct in6_addr local6; |
c72daea8 | 609 | int prefix; |
c5ad4e79 | 610 | time_t ra_time; |
c72daea8 | 611 | #endif |
0a852541 | 612 | int flags; |
8ef5ada2 | 613 | char *interface; |
cdeda28f | 614 | struct dhcp_netid netid, *filter; |
36717eee | 615 | struct dhcp_context *next, *current; |
9e4abcb5 SK |
616 | }; |
617 | ||
0a852541 | 618 | #define CONTEXT_STATIC 1 |
cdeda28f SK |
619 | #define CONTEXT_NETMASK 2 |
620 | #define CONTEXT_BRDCAST 4 | |
7622fc06 | 621 | #define CONTEXT_PROXY 8 |
c5ad4e79 SK |
622 | #define CONTEXT_RA_ONLY 16 |
623 | #define CONTEXT_RA_DONE 32 | |
0a852541 | 624 | |
3d8df260 SK |
625 | struct ping_result { |
626 | struct in_addr addr; | |
627 | time_t time; | |
7de060b0 | 628 | unsigned int hash; |
3d8df260 SK |
629 | struct ping_result *next; |
630 | }; | |
9e4abcb5 | 631 | |
832af0ba SK |
632 | struct tftp_file { |
633 | int refcount, fd; | |
634 | off_t size; | |
5aabfc78 SK |
635 | dev_t dev; |
636 | ino_t inode; | |
832af0ba SK |
637 | char filename[]; |
638 | }; | |
639 | ||
640 | struct tftp_transfer { | |
641 | int sockfd; | |
642 | time_t timeout; | |
643 | int backoff; | |
9e038946 SK |
644 | unsigned int block, blocksize, expansion; |
645 | off_t offset; | |
28866e95 | 646 | union mysockaddr peer; |
9e038946 | 647 | char opt_blocksize, opt_transize, netascii, carrylf; |
832af0ba SK |
648 | struct tftp_file *file; |
649 | struct tftp_transfer *next; | |
650 | }; | |
651 | ||
8ef5ada2 SK |
652 | struct addr_list { |
653 | struct in_addr addr; | |
654 | struct addr_list *next; | |
655 | }; | |
656 | ||
657 | struct interface_list { | |
658 | char *interface; | |
659 | struct interface_list *next; | |
660 | }; | |
661 | ||
662 | struct tftp_prefix { | |
663 | char *interface; | |
664 | char *prefix; | |
665 | struct tftp_prefix *next; | |
666 | }; | |
667 | ||
668 | ||
5aabfc78 | 669 | extern struct daemon { |
3be34541 SK |
670 | /* datastuctures representing the command-line and |
671 | config file arguments. All set (including defaults) | |
672 | in option.c */ | |
673 | ||
28866e95 | 674 | unsigned int options, options2; |
3be34541 | 675 | struct resolvc default_resolv, *resolv_files; |
9009d746 | 676 | time_t last_resolv; |
0a852541 | 677 | struct mx_srv_record *mxnames; |
1a6bca81 | 678 | struct naptr *naptr; |
0a852541 | 679 | struct txt_record *txt; |
832af0ba | 680 | struct ptr_record *ptr; |
9009d746 | 681 | struct cname *cnames; |
f2621c7f | 682 | struct interface_name *int_names; |
3be34541 SK |
683 | char *mxtarget; |
684 | char *lease_file; | |
9e038946 | 685 | char *username, *groupname, *scriptuser; |
c72daea8 | 686 | char *luascript; |
1a6bca81 | 687 | int group_set, osport; |
3be34541 | 688 | char *domain_suffix; |
9009d746 | 689 | struct cond_domain *cond_domain; |
3be34541 | 690 | char *runfile; |
7cebd20f | 691 | char *lease_change_command; |
3d8df260 | 692 | struct iname *if_names, *if_addrs, *if_except, *dhcp_except; |
3be34541 SK |
693 | struct bogus_addr *bogus_addr; |
694 | struct server *servers; | |
849a8357 | 695 | int log_fac; /* log facility */ |
f2621c7f SK |
696 | char *log_file; /* optional log file */ |
697 | int max_logs; /* queue limit */ | |
208b65c5 | 698 | int cachesize, ftabsize; |
1a6bca81 | 699 | int port, query_port, min_port; |
8ef5ada2 | 700 | unsigned long local_ttl, neg_ttl, max_ttl; |
fd9fa481 | 701 | struct hostsfile *addn_hosts; |
c5ad4e79 | 702 | struct dhcp_context *dhcp, *dhcp6, *ra_contexts; |
3be34541 | 703 | struct dhcp_config *dhcp_conf; |
3634c54e | 704 | struct dhcp_opt *dhcp_opts, *dhcp_match, *dhcp_opts6, *dhcp_match6; |
3be34541 | 705 | struct dhcp_vendor *dhcp_vendors; |
cdeda28f | 706 | struct dhcp_mac *dhcp_macs; |
26128d27 | 707 | struct dhcp_boot *boot_config; |
7622fc06 | 708 | struct pxe_service *pxe_services; |
8ef5ada2 SK |
709 | struct tag_if *tag_if; |
710 | struct addr_list *override_relays; | |
711 | int override; | |
1f15b81d | 712 | int enable_pxe; |
8ef5ada2 SK |
713 | struct dhcp_netid_list *dhcp_ignore, *dhcp_ignore_names, *dhcp_gen_names; |
714 | struct dhcp_netid_list *force_broadcast, *bootp_dynamic; | |
28866e95 | 715 | struct hostsfile *dhcp_hosts_file, *dhcp_opts_file; |
824af85b | 716 | int dhcp_max, tftp_max; |
9e038946 | 717 | int dhcp_server_port, dhcp_client_port; |
824af85b | 718 | int start_tftp_port, end_tftp_port; |
3be34541 SK |
719 | unsigned int min_leasetime; |
720 | struct doctor *doctors; | |
721 | unsigned short edns_pktsz; | |
824af85b | 722 | char *tftp_prefix; |
8ef5ada2 SK |
723 | struct tftp_prefix *if_prefix; /* per-interface TFTP prefixes */ |
724 | struct interface_list *tftp_interfaces; /* interfaces for limited TFTP service */ | |
725 | int tftp_unlimited; | |
3be34541 SK |
726 | |
727 | /* globally used stuff for DNS */ | |
728 | char *packet; /* packet buffer */ | |
0a852541 | 729 | int packet_buff_sz; /* size of above */ |
3be34541 | 730 | char *namebuff; /* MAXDNAME size buffer */ |
824af85b | 731 | unsigned int local_answer, queries_forwarded; |
1a6bca81 | 732 | struct frec *frec_list; |
3be34541 | 733 | struct serverfd *sfds; |
3d8df260 | 734 | struct irec *interfaces; |
3be34541 SK |
735 | struct listener *listeners; |
736 | struct server *last_server; | |
1f15b81d SK |
737 | time_t forwardtime; |
738 | int forwardcount; | |
cdeda28f SK |
739 | struct server *srv_save; /* Used for resend on DoD */ |
740 | size_t packet_len; /* " " */ | |
3927da46 | 741 | struct randfd *rfd_save; /* " " */ |
7622fc06 | 742 | pid_t tcp_pids[MAX_PROCS]; |
1a6bca81 | 743 | struct randfd randomsocks[RANDOM_SOCKS]; |
316e2730 | 744 | int v6pktinfo; |
1a6bca81 | 745 | |
3be34541 | 746 | /* DHCP state */ |
316e2730 | 747 | int dhcpfd, helperfd, pxefd; |
7622fc06 | 748 | #if defined(HAVE_LINUX_NETWORK) |
0a852541 | 749 | int netlinkfd; |
7622fc06 | 750 | #elif defined(HAVE_BSD_NETWORK) |
5e9e0efb | 751 | int dhcp_raw_fd, dhcp_icmp_fd; |
0a852541 | 752 | #endif |
5e9e0efb | 753 | struct iovec dhcp_packet; |
8ef5ada2 | 754 | char *dhcp_buff, *dhcp_buff2, *dhcp_buff3; |
3d8df260 | 755 | struct ping_result *ping_results; |
cdeda28f | 756 | FILE *lease_stream; |
832af0ba | 757 | struct dhcp_bridge *bridges; |
c72daea8 SK |
758 | #ifdef HAVE_DHCP6 |
759 | int duid_len; | |
760 | unsigned char *duid; | |
761 | struct iovec outpacket; | |
c5ad4e79 | 762 | int dhcp6fd, icmp6fd; |
c72daea8 | 763 | #endif |
3d8df260 | 764 | /* DBus stuff */ |
3d8df260 SK |
765 | /* void * here to avoid depending on dbus headers outside dbus.c */ |
766 | void *dbus; | |
832af0ba | 767 | #ifdef HAVE_DBUS |
3d8df260 SK |
768 | struct watch *watches; |
769 | #endif | |
770 | ||
832af0ba SK |
771 | /* TFTP stuff */ |
772 | struct tftp_transfer *tftp_trans; | |
824af85b | 773 | |
c72daea8 SK |
774 | /* utility string buffer, hold max sized IP address as string */ |
775 | char *addrbuff; | |
776 | ||
5aabfc78 | 777 | } *daemon; |
3be34541 | 778 | |
9e4abcb5 | 779 | /* cache.c */ |
5aabfc78 | 780 | void cache_init(void); |
28866e95 | 781 | void log_query(unsigned int flags, char *name, struct all_addr *addr, char *arg); |
7622fc06 | 782 | char *record_source(int index); |
1a6bca81 | 783 | void querystr(char *str, unsigned short type); |
9e4abcb5 SK |
784 | struct crec *cache_find_by_addr(struct crec *crecp, |
785 | struct all_addr *addr, time_t now, | |
786 | unsigned short prot); | |
787 | struct crec *cache_find_by_name(struct crec *crecp, | |
788 | char *name, time_t now, unsigned short prot); | |
789 | void cache_end_insert(void); | |
790 | void cache_start_insert(void); | |
fd9fa481 SK |
791 | struct crec *cache_insert(char *name, struct all_addr *addr, |
792 | time_t now, unsigned long ttl, unsigned short flags); | |
7622fc06 | 793 | void cache_reload(void); |
4cb1b320 | 794 | void cache_add_dhcp_entry(char *host_name, int prot, struct all_addr *host_address, time_t ttd); |
7de060b0 | 795 | struct in_addr a_record_from_hosts(char *name, time_t now); |
9e4abcb5 | 796 | void cache_unhash_dhcp(void); |
5aabfc78 | 797 | void dump_cache(time_t now); |
9e4abcb5 | 798 | char *cache_get_name(struct crec *crecp); |
7622fc06 | 799 | char *get_domain(struct in_addr addr); |
4cb1b320 SK |
800 | #ifdef HAVE_IPV6 |
801 | char *get_domain6(struct in6_addr *addr); | |
802 | #endif | |
9e4abcb5 SK |
803 | |
804 | /* rfc1035.c */ | |
572b41eb | 805 | unsigned int extract_request(struct dns_header *header, size_t qlen, |
c1bb8504 | 806 | char *name, unsigned short *typep); |
572b41eb | 807 | size_t setup_reply(struct dns_header *header, size_t qlen, |
28866e95 | 808 | struct all_addr *addrp, unsigned int flags, |
cdeda28f | 809 | unsigned long local_ttl); |
572b41eb | 810 | int extract_addresses(struct dns_header *header, size_t qlen, char *namebuff, |
28866e95 | 811 | time_t now, int is_sign, int checkrebind, int checking_disabled); |
572b41eb | 812 | size_t answer_request(struct dns_header *header, char *limit, size_t qlen, |
f6b7dc47 | 813 | struct in_addr local_addr, struct in_addr local_netmask, time_t now); |
572b41eb | 814 | int check_for_bogus_wildcard(struct dns_header *header, size_t qlen, char *name, |
9e4abcb5 | 815 | struct bogus_addr *addr, time_t now); |
572b41eb | 816 | unsigned char *find_pseudoheader(struct dns_header *header, size_t plen, |
832af0ba | 817 | size_t *len, unsigned char **p, int *is_sign); |
5aabfc78 | 818 | int check_for_local_domain(char *name, time_t now); |
572b41eb SK |
819 | unsigned int questions_crc(struct dns_header *header, size_t plen, char *buff); |
820 | size_t resize_packet(struct dns_header *header, size_t plen, | |
cdeda28f | 821 | unsigned char *pheader, size_t hlen); |
572b41eb | 822 | size_t add_mac(struct dns_header *header, size_t plen, char *limit, union mysockaddr *l3); |
9e4abcb5 SK |
823 | |
824 | /* util.c */ | |
1a6bca81 | 825 | void rand_init(void); |
9e4abcb5 | 826 | unsigned short rand16(void); |
1f15b81d SK |
827 | int legal_hostname(char *c); |
828 | char *canonicalise(char *s, int *nomem); | |
3d8df260 | 829 | unsigned char *do_rfc1035_name(unsigned char *p, char *sval); |
0a852541 | 830 | void *safe_malloc(size_t size); |
1a6bca81 | 831 | void safe_pipe(int *fd, int read_noblock); |
5aabfc78 | 832 | void *whine_malloc(size_t size); |
9e4abcb5 SK |
833 | int sa_len(union mysockaddr *addr); |
834 | int sockaddr_isequal(union mysockaddr *s1, union mysockaddr *s2); | |
3d8df260 | 835 | int hostname_isequal(char *a, char *b); |
5e9e0efb | 836 | time_t dnsmasq_time(void); |
a84fa1d0 | 837 | int is_same_net(struct in_addr a, struct in_addr b, struct in_addr mask); |
c72daea8 SK |
838 | #ifdef HAVE_IPV6 |
839 | int is_same_net6(struct in6_addr *a, struct in6_addr *b, int prefixlen); | |
52b92f4d SK |
840 | u64 addr6part(struct in6_addr *addr); |
841 | void setaddr6part(struct in6_addr *addr, u64 host); | |
c72daea8 | 842 | #endif |
fd9fa481 | 843 | int retry_send(void); |
0a852541 | 844 | void prettyprint_time(char *buf, unsigned int t); |
3d8df260 | 845 | int prettyprint_addr(union mysockaddr *addr, char *buf); |
0a852541 | 846 | int parse_hex(char *in, unsigned char *out, int maxlen, |
cdeda28f | 847 | unsigned int *wildcard_mask, int *mac_type); |
5e9e0efb SK |
848 | int memcmp_masked(unsigned char *a, unsigned char *b, int len, |
849 | unsigned int mask); | |
850 | int expand_buf(struct iovec *iov, size_t size); | |
5aabfc78 | 851 | char *print_mac(char *buff, unsigned char *mac, int len); |
1697269c | 852 | void bump_maxfd(int fd, int *max); |
1697269c | 853 | int read_write(int fd, unsigned char *packet, int size, int rw); |
7cebd20f | 854 | |
f2621c7f | 855 | /* log.c */ |
5aabfc78 | 856 | void die(char *message, char *arg1, int exit_code); |
1a6bca81 | 857 | int log_start(struct passwd *ent_pw, int errfd); |
5aabfc78 | 858 | int log_reopen(char *log_file); |
f2621c7f SK |
859 | void my_syslog(int priority, const char *format, ...); |
860 | void set_log_writer(fd_set *set, int *maxfdp); | |
861 | void check_log_writer(fd_set *set); | |
5aabfc78 | 862 | void flush_log(void); |
f2621c7f | 863 | |
9e4abcb5 | 864 | /* option.c */ |
5aabfc78 | 865 | void read_opts (int argc, char **argv, char *compile_opts); |
4cb1b320 SK |
866 | char *option_string(int prot, unsigned int opt, unsigned char *val, |
867 | int opt_len, char *buf, int buf_len); | |
824af85b | 868 | void reread_dhcp(void); |
28866e95 SK |
869 | void set_option_bool(unsigned int opt); |
870 | struct hostsfile *expand_filelist(struct hostsfile *list); | |
9e4abcb5 SK |
871 | |
872 | /* forward.c */ | |
1a6bca81 | 873 | void reply_query(int fd, int family, time_t now); |
5aabfc78 SK |
874 | void receive_query(struct listener *listen, time_t now); |
875 | unsigned char *tcp_request(int confd, time_t now, | |
7de060b0 | 876 | union mysockaddr *local_addr, struct in_addr netmask); |
5aabfc78 SK |
877 | void server_gone(struct server *server); |
878 | struct frec *get_new_frec(time_t now, int *wait); | |
c72daea8 SK |
879 | void send_from(int fd, int nowild, char *packet, size_t len, |
880 | union mysockaddr *to, struct all_addr *source, | |
881 | unsigned int iface); | |
3be34541 | 882 | |
9e4abcb5 | 883 | /* network.c */ |
7622fc06 | 884 | int indextoname(int fd, int index, char *name); |
824af85b | 885 | int local_bind(int fd, union mysockaddr *addr, char *intname, int is_tcp); |
1a6bca81 | 886 | int random_sock(int family); |
824af85b | 887 | void pre_allocate_sfds(void); |
5aabfc78 SK |
888 | int reload_servers(char *fname); |
889 | void check_servers(void); | |
890 | int enumerate_interfaces(); | |
74c95c25 SK |
891 | void create_wildcard_listeners(void); |
892 | void create_bound_listeners(int die); | |
893 | int is_dad_listeners(void); | |
c72daea8 | 894 | int iface_check(int family, struct all_addr *addr, char *name); |
7cebd20f | 895 | int fix_fd(int fd); |
5aabfc78 | 896 | struct in_addr get_ifaddr(char *intr); |
c72daea8 SK |
897 | #ifdef HAVE_IPV6 |
898 | int set_ipv6pktinfo(int fd); | |
899 | #endif | |
3be34541 | 900 | |
9e4abcb5 | 901 | /* dhcp.c */ |
7622fc06 | 902 | #ifdef HAVE_DHCP |
5aabfc78 | 903 | void dhcp_init(void); |
316e2730 | 904 | void dhcp_packet(time_t now, int pxe_fd); |
824af85b SK |
905 | struct dhcp_context *address_available(struct dhcp_context *context, |
906 | struct in_addr addr, | |
907 | struct dhcp_netid *netids); | |
908 | struct dhcp_context *narrow_context(struct dhcp_context *context, | |
909 | struct in_addr taddr, | |
910 | struct dhcp_netid *netids); | |
8ef5ada2 | 911 | int address_allocate(struct dhcp_context *context, |
cdeda28f | 912 | struct in_addr *addrp, unsigned char *hwaddr, int hw_len, |
3d8df260 | 913 | struct dhcp_netid *netids, time_t now); |
9009d746 | 914 | int config_has_mac(struct dhcp_config *config, unsigned char *hwaddr, int len, int type); |
9e4abcb5 SK |
915 | struct dhcp_config *find_config(struct dhcp_config *configs, |
916 | struct dhcp_context *context, | |
917 | unsigned char *clid, int clid_len, | |
cdeda28f SK |
918 | unsigned char *hwaddr, int hw_len, |
919 | int hw_type, char *hostname); | |
5aabfc78 | 920 | void dhcp_read_ethers(void); |
dfa666f2 | 921 | struct dhcp_config *config_find_by_address(struct dhcp_config *configs, struct in_addr addr); |
5aabfc78 | 922 | char *host_from_dns(struct in_addr addr); |
7622fc06 | 923 | #endif |
3be34541 | 924 | |
9e4abcb5 | 925 | /* lease.c */ |
7622fc06 | 926 | #ifdef HAVE_DHCP |
5aabfc78 SK |
927 | void lease_update_file(time_t now); |
928 | void lease_update_dns(); | |
929 | void lease_init(time_t now); | |
52b92f4d | 930 | struct dhcp_lease *lease4_allocate(struct in_addr addr); |
c72daea8 | 931 | #ifdef HAVE_DHCP6 |
4cb1b320 SK |
932 | struct dhcp_lease *lease6_allocate(struct in6_addr *addrp, int lease_type); |
933 | struct dhcp_lease *lease6_find(unsigned char *clid, int clid_len, | |
934 | int lease_type, int iaid, struct in6_addr *addr); | |
52b92f4d | 935 | struct dhcp_lease *lease6_find_by_addr(struct in6_addr *net, int prefix, u64 addr); |
0793380b | 936 | u64 lease_find_max_addr6(struct dhcp_context *context); |
c72daea8 | 937 | #endif |
7cebd20f | 938 | void lease_set_hwaddr(struct dhcp_lease *lease, unsigned char *hwaddr, |
cdeda28f | 939 | unsigned char *clid, int hw_len, int hw_type, int clid_len); |
70c5e3e0 | 940 | void lease_set_hostname(struct dhcp_lease *lease, char *name, int auth, char *domain, char *config_domain); |
5e9e0efb | 941 | void lease_set_expires(struct dhcp_lease *lease, unsigned int len, time_t now); |
824af85b | 942 | void lease_set_interface(struct dhcp_lease *lease, int interface); |
cdeda28f | 943 | struct dhcp_lease *lease_find_by_client(unsigned char *hwaddr, int hw_len, int hw_type, |
0a852541 | 944 | unsigned char *clid, int clid_len); |
9e4abcb5 | 945 | struct dhcp_lease *lease_find_by_addr(struct in_addr addr); |
7de060b0 | 946 | struct in_addr lease_find_max_addr(struct dhcp_context *context); |
9e4abcb5 | 947 | void lease_prune(struct dhcp_lease *target, time_t now); |
5aabfc78 SK |
948 | void lease_update_from_configs(void); |
949 | int do_script_run(time_t now); | |
950 | void rerun_scripts(void); | |
ceae00dd SK |
951 | #ifdef HAVE_SCRIPT |
952 | void lease_add_extradata(struct dhcp_lease *lease, unsigned char *data, | |
953 | unsigned int len, int delim); | |
954 | #endif | |
7622fc06 | 955 | #endif |
a84fa1d0 | 956 | |
9e4abcb5 | 957 | /* rfc2131.c */ |
7622fc06 | 958 | #ifdef HAVE_DHCP |
824af85b | 959 | size_t dhcp_reply(struct dhcp_context *context, char *iface_name, int int_index, |
7de060b0 | 960 | size_t sz, time_t now, int unicast_dest, int *is_inform, int pxe_fd, struct in_addr fallback); |
9009d746 SK |
961 | unsigned char *extended_hwaddr(int hwtype, int hwlen, unsigned char *hwaddr, |
962 | int clid_len, unsigned char *clid, int *len_out); | |
7622fc06 | 963 | #endif |
3be34541 SK |
964 | |
965 | /* dnsmasq.c */ | |
7622fc06 | 966 | #ifdef HAVE_DHCP |
5e9e0efb | 967 | int make_icmp_sock(void); |
5aabfc78 | 968 | int icmp_ping(struct in_addr addr); |
7622fc06 | 969 | #endif |
741c2952 | 970 | void send_alarm(void); |
c72daea8 | 971 | void send_event(int fd, int event, int data, char *msg); |
5aabfc78 | 972 | void clear_cache_and_reload(time_t now); |
8ef5ada2 | 973 | void poll_resolv(int force, int do_reload, time_t now); |
44a2a316 | 974 | |
0a852541 | 975 | /* netlink.c */ |
5e9e0efb | 976 | #ifdef HAVE_LINUX_NETWORK |
5aabfc78 | 977 | void netlink_init(void); |
5aabfc78 | 978 | void netlink_multicast(void); |
5e9e0efb SK |
979 | #endif |
980 | ||
981 | /* bpf.c */ | |
824af85b | 982 | #ifdef HAVE_BSD_NETWORK |
5aabfc78 SK |
983 | void init_bpf(void); |
984 | void send_via_bpf(struct dhcp_packet *mess, size_t len, | |
5e9e0efb | 985 | struct in_addr iface_addr, struct ifreq *ifr); |
0a852541 | 986 | #endif |
3d8df260 | 987 | |
824af85b | 988 | /* bpf.c or netlink.c */ |
28866e95 | 989 | int iface_enumerate(int family, void *parm, int (callback)()); |
824af85b | 990 | |
3d8df260 SK |
991 | /* dbus.c */ |
992 | #ifdef HAVE_DBUS | |
5aabfc78 SK |
993 | char *dbus_init(void); |
994 | void check_dbus_listeners(fd_set *rset, fd_set *wset, fd_set *eset); | |
995 | void set_dbus_listeners(int *maxfdp, fd_set *rset, fd_set *wset, fd_set *eset); | |
316e2730 | 996 | # ifdef HAVE_DHCP |
1f15b81d | 997 | void emit_dbus_signal(int action, struct dhcp_lease *lease, char *hostname); |
316e2730 | 998 | # endif |
3d8df260 | 999 | #endif |
1697269c SK |
1000 | |
1001 | /* helper.c */ | |
7622fc06 | 1002 | #if defined(HAVE_DHCP) && !defined(NO_FORK) |
1a6bca81 | 1003 | int create_helper(int event_fd, int err_fd, uid_t uid, gid_t gid, long max_fd); |
5aabfc78 SK |
1004 | void helper_write(void); |
1005 | void queue_script(int action, struct dhcp_lease *lease, | |
1006 | char *hostname, time_t now); | |
1697269c | 1007 | int helper_buf_empty(void); |
5aabfc78 | 1008 | #endif |
832af0ba SK |
1009 | |
1010 | /* tftp.c */ | |
1011 | #ifdef HAVE_TFTP | |
5aabfc78 SK |
1012 | void tftp_request(struct listener *listen, time_t now); |
1013 | void check_tftp_listeners(fd_set *rset, time_t now); | |
832af0ba | 1014 | #endif |
7de060b0 SK |
1015 | |
1016 | /* conntrack.c */ | |
1017 | #ifdef HAVE_CONNTRACK | |
1018 | int get_incoming_mark(union mysockaddr *peer_addr, struct all_addr *local_addr, | |
1019 | int istcp, unsigned int *markp); | |
1020 | #endif | |
c72daea8 | 1021 | |
52b92f4d SK |
1022 | /* dhcp6.c */ |
1023 | #ifdef HAVE_DHCP6 | |
1024 | void dhcp6_init(void); | |
1025 | void dhcp6_packet(time_t now); | |
1026 | int address6_allocate(struct dhcp_context *context, unsigned char *clid, int clid_len, | |
4cb1b320 | 1027 | int serial, struct dhcp_netid *netids, struct in6_addr *ans); |
52b92f4d SK |
1028 | struct dhcp_context *address6_available(struct dhcp_context *context, |
1029 | struct in6_addr *taddr, | |
1030 | struct dhcp_netid *netids); | |
1031 | struct dhcp_context *narrow_context6(struct dhcp_context *context, | |
1032 | struct in6_addr *taddr, | |
1033 | struct dhcp_netid *netids); | |
4cb1b320 SK |
1034 | struct dhcp_config *find_config6(struct dhcp_config *configs, |
1035 | struct dhcp_context *context, | |
1036 | unsigned char *duid, int duid_len, | |
1037 | char *hostname); | |
ceae00dd SK |
1038 | struct dhcp_config *config_find_by_address6(struct dhcp_config *configs, struct in6_addr *net, |
1039 | int prefix, u64 addr); | |
4cb1b320 | 1040 | void make_duid(time_t now); |
52b92f4d SK |
1041 | #endif |
1042 | ||
c72daea8 SK |
1043 | /* rfc3315.c */ |
1044 | #ifdef HAVE_DHCP6 | |
e44ddcac SK |
1045 | size_t dhcp6_reply(struct dhcp_context *context, int interface, char *iface_name, |
1046 | struct in6_addr *fallback, size_t sz, int is_multicast, time_t now); | |
c72daea8 | 1047 | #endif |
4cb1b320 SK |
1048 | |
1049 | /* dhcp-common.c */ | |
ceae00dd | 1050 | #ifdef HAVE_DHCP |
4cb1b320 SK |
1051 | void dhcp_common_init(void); |
1052 | ssize_t recv_dhcp_packet(int fd, struct msghdr *msg); | |
1053 | struct dhcp_netid *run_tag_if(struct dhcp_netid *input); | |
1054 | struct dhcp_netid *option_filter(struct dhcp_netid *tags, struct dhcp_netid *context_tags, | |
1055 | struct dhcp_opt *opts); | |
1056 | int match_netid(struct dhcp_netid *check, struct dhcp_netid *pool, int negonly); | |
1057 | char *strip_hostname(char *hostname); | |
1058 | void log_tags(struct dhcp_netid *netid, u32 xid); | |
3634c54e | 1059 | int match_bytes(struct dhcp_opt *o, unsigned char *p, int len); |
ceae00dd SK |
1060 | void dhcp_update_configs(struct dhcp_config *configs); |
1061 | void check_dhcp_hosts(int fatal); | |
c72daea8 | 1062 | #endif |
c5ad4e79 SK |
1063 | |
1064 | /* outpacket.c */ | |
1065 | #ifdef HAVE_DHCP6 | |
1066 | void end_opt6(int container); | |
1067 | int save_counter(int newval); | |
1068 | void *expand(size_t headroom); | |
1069 | int new_opt6(int opt); | |
1070 | void *put_opt6(void *data, size_t len); | |
1071 | void put_opt6_long(unsigned int val); | |
1072 | void put_opt6_short(unsigned int val); | |
1073 | void put_opt6_char(unsigned int val); | |
1074 | void put_opt6_string(char *s); | |
1075 | #endif | |
1076 | ||
1077 | /* radv.c */ | |
1078 | #ifdef HAVE_DHCP6 | |
1079 | void ra_init(time_t now); | |
1080 | void icmp6_packet(void); | |
1081 | time_t periodic_ra(time_t now); | |
1082 | void ra_start_unsolicted(time_t now); | |
1083 | #endif |