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9e4abcb5 SK |
1 | /* dnsmasq is Copyright (c) 2000-2003 Simon Kelley |
2 | ||
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 | |
5 | the Free Software Foundation; version 2 dated June, 1991. | |
6 | ||
7 | This program is distributed in the hope that it will be useful, | |
8 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
9 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
10 | GNU General Public License for more details. | |
11 | */ | |
12 | ||
13 | /* Author's email: simon@thekelleys.org.uk */ | |
feba5c1d SK |
14 | |
15 | #define COPYRIGHT "Copyright (C) 2000-2004 Simon Kelley" | |
9e4abcb5 | 16 | |
44a2a316 | 17 | #ifdef __linux__ |
9e4abcb5 | 18 | /* for pselect.... */ |
44a2a316 | 19 | #define _XOPEN_SOURCE 600 |
9e4abcb5 SK |
20 | /* but then DNS headers don't compile without.... */ |
21 | #define _BSD_SOURCE | |
44a2a316 SK |
22 | #endif |
23 | ||
9e4abcb5 | 24 | /* get these before config.h for IPv6 stuff... */ |
44a2a316 | 25 | #include <sys/types.h> |
9e4abcb5 SK |
26 | #include <netinet/in.h> |
27 | ||
28 | /* get this before config.h too. */ | |
29 | #include <syslog.h> | |
3be34541 | 30 | #include <arpa/nameser.h> |
9e4abcb5 | 31 | |
59353a6b SK |
32 | /* and this. */ |
33 | #include <getopt.h> | |
34 | ||
9e4abcb5 | 35 | #include "config.h" |
44a2a316 | 36 | |
9e4abcb5 SK |
37 | #include <arpa/inet.h> |
38 | #include <sys/stat.h> | |
39 | #include <sys/socket.h> | |
9e4abcb5 SK |
40 | #include <sys/ioctl.h> |
41 | #include <sys/select.h> | |
feba5c1d | 42 | #include <sys/wait.h> |
9e4abcb5 | 43 | #if defined(__sun) || defined(__sun__) |
44a2a316 | 44 | # include <sys/sockio.h> |
9e4abcb5 SK |
45 | #endif |
46 | #include <sys/time.h> | |
8a911ccc | 47 | #include <limits.h> |
9e4abcb5 SK |
48 | #include <net/if.h> |
49 | #include <unistd.h> | |
50 | #include <stdio.h> | |
51 | #include <string.h> | |
52 | #include <stdlib.h> | |
53 | #include <fcntl.h> | |
54 | #include <ctype.h> | |
55 | #include <signal.h> | |
9e4abcb5 SK |
56 | #include <time.h> |
57 | #include <errno.h> | |
58 | #include <pwd.h> | |
59 | #include <grp.h> | |
de37951c | 60 | #if defined(__OpenBSD__) || defined(__NetBSD__) |
44a2a316 SK |
61 | # include <netinet/if_ether.h> |
62 | #else | |
63 | # include <net/ethernet.h> | |
64 | #endif | |
9e4abcb5 SK |
65 | #include <net/if_arp.h> |
66 | #include <netinet/in_systm.h> | |
67 | #include <netinet/ip.h> | |
3be34541 | 68 | #include <netinet/ip_icmp.h> |
9e4abcb5 | 69 | #ifdef HAVE_BPF |
44a2a316 SK |
70 | # include <net/bpf.h> |
71 | # include <net/if_dl.h> | |
72 | #else | |
73 | # include <netpacket/packet.h> | |
9e4abcb5 SK |
74 | #endif |
75 | #include <sys/uio.h> | |
76 | ||
44a2a316 SK |
77 | /* Size: we check after adding each record, so there must be |
78 | memory for the largest packet, and the largest record */ | |
79 | #define DNSMASQ_PACKETSZ PACKETSZ+MAXDNAME+RRFIXEDSZ | |
80 | ||
9e4abcb5 SK |
81 | #define OPT_BOGUSPRIV 1 |
82 | #define OPT_FILTER 2 | |
83 | #define OPT_LOG 4 | |
84 | #define OPT_SELFMX 8 | |
85 | #define OPT_NO_HOSTS 16 | |
86 | #define OPT_NO_POLL 32 | |
87 | #define OPT_DEBUG 64 | |
88 | #define OPT_ORDER 128 | |
89 | #define OPT_NO_RESOLV 256 | |
90 | #define OPT_EXPAND 512 | |
91 | #define OPT_LOCALMX 1024 | |
92 | #define OPT_NO_NEG 2048 | |
93 | #define OPT_NODOTS_LOCAL 4096 | |
44a2a316 SK |
94 | #define OPT_NOWILD 8192 |
95 | #define OPT_ETHERS 16384 | |
de37951c | 96 | #define OPT_RESOLV_DOMAIN 32768 |
3be34541 | 97 | #define OPT_NO_FORK 65536 |
fd9fa481 | 98 | #define OPT_AUTHORITATIVE 131072 |
9e4abcb5 SK |
99 | |
100 | struct all_addr { | |
101 | union { | |
102 | struct in_addr addr4; | |
103 | #ifdef HAVE_IPV6 | |
104 | struct in6_addr addr6; | |
105 | #endif | |
106 | } addr; | |
107 | }; | |
108 | ||
109 | struct bogus_addr { | |
110 | struct in_addr addr; | |
111 | struct bogus_addr *next; | |
112 | }; | |
113 | ||
1cff166d SK |
114 | /* dns doctor param */ |
115 | struct doctor { | |
116 | struct in_addr in, out, mask; | |
117 | struct doctor *next; | |
118 | }; | |
119 | ||
de37951c SK |
120 | struct mx_record { |
121 | char *mxname, *mxtarget; | |
122 | struct mx_record *next; | |
123 | }; | |
124 | ||
9e4abcb5 SK |
125 | union bigname { |
126 | char name[MAXDNAME]; | |
127 | union bigname *next; /* freelist */ | |
128 | }; | |
129 | ||
130 | struct crec { | |
131 | struct crec *next, *prev, *hash_next; | |
132 | time_t ttd; /* time to die */ | |
fd9fa481 SK |
133 | int uid; |
134 | union { | |
135 | struct all_addr addr; | |
136 | struct { | |
137 | struct crec *cache; | |
138 | int uid; | |
139 | } cname; | |
140 | } addr; | |
9e4abcb5 SK |
141 | unsigned short flags; |
142 | union { | |
143 | char sname[SMALLDNAME]; | |
144 | union bigname *bname; | |
145 | char *namep; | |
146 | } name; | |
147 | }; | |
148 | ||
149 | #define F_IMMORTAL 1 | |
fd9fa481 | 150 | #define F_CONFIG 2 |
9e4abcb5 SK |
151 | #define F_REVERSE 4 |
152 | #define F_FORWARD 8 | |
153 | #define F_DHCP 16 | |
154 | #define F_NEG 32 | |
155 | #define F_HOSTS 64 | |
156 | #define F_IPV4 128 | |
157 | #define F_IPV6 256 | |
158 | #define F_BIGNAME 512 | |
159 | #define F_UPSTREAM 1024 | |
160 | #define F_SERVER 2048 | |
161 | #define F_NXDOMAIN 4096 | |
162 | #define F_QUERY 8192 | |
fd9fa481 | 163 | #define F_CNAME 16384 |
9e4abcb5 SK |
164 | #define F_NOERR 32768 |
165 | ||
166 | /* struct sockaddr is not large enough to hold any address, | |
167 | and specifically not big enough to hold and IPv6 address. | |
168 | Blech. Roll our own. */ | |
169 | union mysockaddr { | |
170 | struct sockaddr sa; | |
171 | struct sockaddr_in in; | |
172 | #ifdef HAVE_BROKEN_SOCKADDR_IN6 | |
173 | /* early versions of glibc don't include sin6_scope_id in sockaddr_in6 | |
174 | but latest kernels _require_ it to be set. The choice is to have | |
175 | dnsmasq fail to compile on back-level libc or fail to run | |
176 | on latest kernels with IPv6. Or to do this: sorry that it's so gross. */ | |
177 | struct my_sockaddr_in6 { | |
178 | sa_family_t sin6_family; /* AF_INET6 */ | |
179 | uint16_t sin6_port; /* transport layer port # */ | |
180 | uint32_t sin6_flowinfo; /* IPv6 traffic class & flow info */ | |
181 | struct in6_addr sin6_addr; /* IPv6 address */ | |
182 | uint32_t sin6_scope_id; /* set of interfaces for a scope */ | |
183 | } in6; | |
184 | #elif defined(HAVE_IPV6) | |
185 | struct sockaddr_in6 in6; | |
186 | #endif | |
187 | }; | |
188 | ||
189 | #define SERV_FROM_RESOLV 1 /* 1 for servers from resolv, 0 for command line. */ | |
190 | #define SERV_NO_ADDR 2 /* no server, this domain is local only */ | |
191 | #define SERV_LITERAL_ADDRESS 4 /* addr is the answer, not the server */ | |
192 | #define SERV_HAS_SOURCE 8 /* source address specified */ | |
193 | #define SERV_HAS_DOMAIN 16 /* server for one domain only */ | |
194 | #define SERV_FOR_NODOTS 32 /* server for names with no domain part only */ | |
195 | #define SERV_TYPE (SERV_HAS_DOMAIN | SERV_FOR_NODOTS) | |
196 | ||
197 | struct serverfd { | |
198 | int fd; | |
199 | union mysockaddr source_addr; | |
200 | struct serverfd *next; | |
201 | }; | |
202 | ||
203 | struct server { | |
204 | union mysockaddr addr, source_addr; | |
205 | struct serverfd *sfd; /* non-NULL if this server has its own fd bound to | |
206 | a source port */ | |
207 | char *domain; /* set if this server only handles a domain. */ | |
feba5c1d | 208 | int flags, tcpfd; |
9e4abcb5 SK |
209 | struct server *next; |
210 | }; | |
211 | ||
9e4abcb5 SK |
212 | struct irec { |
213 | union mysockaddr addr; | |
9e4abcb5 SK |
214 | struct irec *next; |
215 | }; | |
216 | ||
44a2a316 | 217 | struct listener { |
feba5c1d | 218 | int fd, tcpfd, family; |
44a2a316 SK |
219 | struct listener *next; |
220 | }; | |
221 | ||
9e4abcb5 SK |
222 | /* interface and address parms from command line. */ |
223 | struct iname { | |
224 | char *name; | |
225 | union mysockaddr addr; | |
de37951c | 226 | int isloop, used; |
9e4abcb5 SK |
227 | struct iname *next; |
228 | }; | |
229 | ||
230 | /* resolv-file parms from command-line */ | |
231 | struct resolvc { | |
232 | struct resolvc *next; | |
233 | int is_default; | |
234 | int logged; | |
235 | char *name; | |
236 | }; | |
237 | ||
fd9fa481 SK |
238 | /* adn-hosts parms from command-line */ |
239 | struct hostsfile { | |
240 | struct hostsfile *next; | |
241 | char *fname; | |
242 | int index; /* matches to cache entries fro logging */ | |
243 | }; | |
244 | ||
9e4abcb5 SK |
245 | struct frec { |
246 | union mysockaddr source; | |
44a2a316 | 247 | struct all_addr dest; |
9e4abcb5 | 248 | struct server *sentto; |
dfa666f2 | 249 | unsigned int iface; |
9e4abcb5 SK |
250 | unsigned short orig_id, new_id; |
251 | int fd; | |
fd9fa481 | 252 | unsigned int crc; |
9e4abcb5 SK |
253 | time_t time; |
254 | struct frec *next; | |
255 | }; | |
256 | ||
257 | struct dhcp_lease { | |
258 | int clid_len; /* length of client identifier */ | |
259 | unsigned char *clid; /* clientid */ | |
260 | char *hostname, *fqdn; /* name from client-hostname option or config */ | |
261 | time_t expires; /* lease expiry */ | |
262 | unsigned char hwaddr[ETHER_ADDR_LEN]; | |
263 | struct in_addr addr; | |
264 | struct dhcp_lease *next; | |
265 | }; | |
266 | ||
a222641c SK |
267 | struct dhcp_netid { |
268 | char *net; | |
269 | struct dhcp_netid *next; | |
270 | }; | |
271 | ||
26128d27 SK |
272 | struct dhcp_netid_list { |
273 | struct dhcp_netid *list; | |
274 | struct dhcp_netid_list *next; | |
275 | }; | |
9e4abcb5 | 276 | struct dhcp_config { |
33820b7e | 277 | unsigned int flags; |
9e4abcb5 SK |
278 | int clid_len; /* length of client identifier */ |
279 | unsigned char *clid; /* clientid */ | |
280 | unsigned char hwaddr[ETHER_ADDR_LEN]; | |
a222641c SK |
281 | char *hostname; |
282 | struct dhcp_netid netid; | |
9e4abcb5 SK |
283 | struct in_addr addr; |
284 | unsigned int lease_time; | |
285 | struct dhcp_config *next; | |
286 | }; | |
287 | ||
33820b7e SK |
288 | #define CONFIG_DISABLE 1 |
289 | #define CONFIG_CLID 2 | |
290 | #define CONFIG_HWADDR 4 | |
291 | #define CONFIG_TIME 8 | |
292 | #define CONFIG_NAME 16 | |
293 | #define CONFIG_ADDR 32 | |
294 | #define CONFIG_NETID 64 | |
a84fa1d0 | 295 | #define CONFIG_NOCLID 128 |
33820b7e | 296 | |
9e4abcb5 | 297 | struct dhcp_opt { |
1ab84e2f | 298 | int opt, len, is_addr; |
9e4abcb5 | 299 | unsigned char *val; |
26128d27 | 300 | struct dhcp_netid *netid; |
9e4abcb5 | 301 | struct dhcp_opt *next; |
a84fa1d0 SK |
302 | }; |
303 | ||
26128d27 SK |
304 | struct dhcp_boot { |
305 | char *file, *sname; | |
306 | struct in_addr next_server; | |
307 | struct dhcp_netid *netid; | |
308 | struct dhcp_boot *next; | |
309 | }; | |
310 | ||
a84fa1d0 | 311 | struct dhcp_vendor { |
26128d27 | 312 | int len, is_vendor; |
a222641c SK |
313 | char *data; |
314 | struct dhcp_netid netid; | |
a84fa1d0 SK |
315 | struct dhcp_vendor *next; |
316 | }; | |
9e4abcb5 SK |
317 | |
318 | struct dhcp_context { | |
feba5c1d | 319 | unsigned int lease_time, addr_epoch; |
3be34541 | 320 | struct in_addr netmask, broadcast, router; |
a84fa1d0 | 321 | struct in_addr start, end; /* range of available addresses */ |
3be34541 | 322 | int static_only; |
a222641c | 323 | struct dhcp_netid netid; |
36717eee | 324 | struct dhcp_context *next, *current; |
9e4abcb5 SK |
325 | }; |
326 | ||
327 | typedef unsigned char u8; | |
328 | typedef unsigned short u16; | |
329 | typedef unsigned int u32; | |
330 | ||
331 | ||
332 | struct udp_dhcp_packet { | |
333 | struct ip ip; | |
334 | struct udphdr { | |
335 | u16 uh_sport; /* source port */ | |
336 | u16 uh_dport; /* destination port */ | |
337 | u16 uh_ulen; /* udp length */ | |
338 | u16 uh_sum; /* udp checksum */ | |
339 | } udp; | |
340 | struct dhcp_packet { | |
341 | u8 op, htype, hlen, hops; | |
342 | u32 xid; | |
343 | u16 secs, flags; | |
344 | struct in_addr ciaddr, yiaddr, siaddr, giaddr; | |
345 | u8 chaddr[16], sname[64], file[128]; | |
3be34541 | 346 | u8 options[312]; |
9e4abcb5 SK |
347 | } data; |
348 | }; | |
349 | ||
350 | ||
3be34541 SK |
351 | struct daemon { |
352 | /* datastuctures representing the command-line and | |
353 | config file arguments. All set (including defaults) | |
354 | in option.c */ | |
355 | ||
356 | unsigned int options; | |
357 | struct resolvc default_resolv, *resolv_files; | |
358 | struct mx_record *mxnames; | |
359 | char *mxtarget; | |
360 | char *lease_file; | |
361 | char *username, *groupname; | |
362 | char *domain_suffix; | |
363 | char *runfile; | |
364 | struct iname *if_names, *if_addrs, *if_except; | |
365 | struct bogus_addr *bogus_addr; | |
366 | struct server *servers; | |
367 | int cachesize; | |
368 | int port, query_port; | |
369 | unsigned long local_ttl; | |
fd9fa481 | 370 | struct hostsfile *addn_hosts; |
3be34541 SK |
371 | struct dhcp_context *dhcp; |
372 | struct dhcp_config *dhcp_conf; | |
373 | struct dhcp_opt *dhcp_opts; | |
374 | struct dhcp_vendor *dhcp_vendors; | |
26128d27 SK |
375 | struct dhcp_boot *boot_config; |
376 | struct dhcp_netid_list *dhcp_ignore; | |
3be34541 SK |
377 | int dhcp_max; |
378 | unsigned int min_leasetime; | |
379 | struct doctor *doctors; | |
380 | unsigned short edns_pktsz; | |
381 | ||
382 | /* globally used stuff for DNS */ | |
383 | char *packet; /* packet buffer */ | |
384 | char *namebuff; /* MAXDNAME size buffer */ | |
385 | struct serverfd *sfds; | |
386 | struct listener *listeners; | |
387 | struct server *last_server; | |
388 | int uptime_fd; | |
389 | ||
390 | /* DHCP state */ | |
391 | int dhcpfd, dhcp_raw_fd, dhcp_icmp_fd, lease_fd; | |
392 | struct udp_dhcp_packet *dhcp_packet; | |
393 | char *dhcp_buff, *dhcp_buff2; | |
394 | }; | |
395 | ||
9e4abcb5 SK |
396 | /* cache.c */ |
397 | void cache_init(int cachesize, int log); | |
fd9fa481 SK |
398 | void log_query(unsigned short flags, char *name, struct all_addr *addr, |
399 | unsigned short type, struct hostsfile *addn_hosts, int index); | |
9e4abcb5 SK |
400 | struct crec *cache_find_by_addr(struct crec *crecp, |
401 | struct all_addr *addr, time_t now, | |
402 | unsigned short prot); | |
403 | struct crec *cache_find_by_name(struct crec *crecp, | |
404 | char *name, time_t now, unsigned short prot); | |
405 | void cache_end_insert(void); | |
406 | void cache_start_insert(void); | |
fd9fa481 SK |
407 | struct crec *cache_insert(char *name, struct all_addr *addr, |
408 | time_t now, unsigned long ttl, unsigned short flags); | |
409 | void cache_reload(int opts, char *buff, char *domain_suffix, struct hostsfile *addn_hosts); | |
410 | void cache_add_dhcp_entry(struct daemon *daemon, char *host_name, struct in_addr *host_address, time_t ttd); | |
9e4abcb5 | 411 | void cache_unhash_dhcp(void); |
fd9fa481 | 412 | void dump_cache(struct daemon *daemon); |
9e4abcb5 SK |
413 | char *cache_get_name(struct crec *crecp); |
414 | ||
415 | /* rfc1035.c */ | |
c1bb8504 SK |
416 | unsigned short extract_request(HEADER *header, unsigned int qlen, |
417 | char *name, unsigned short *typep); | |
9e4abcb5 SK |
418 | int setup_reply(HEADER *header, unsigned int qlen, |
419 | struct all_addr *addrp, unsigned short flags, | |
420 | unsigned long local_ttl); | |
1cff166d | 421 | void extract_addresses(HEADER *header, unsigned int qlen, char *namebuff, |
fd9fa481 | 422 | time_t now, struct daemon *daemon); |
3be34541 | 423 | int answer_request(HEADER *header, char *limit, unsigned int qlen, struct daemon *daemon, time_t now); |
9e4abcb5 SK |
424 | int check_for_bogus_wildcard(HEADER *header, unsigned int qlen, char *name, |
425 | struct bogus_addr *addr, time_t now); | |
36717eee SK |
426 | unsigned char *find_pseudoheader(HEADER *header, unsigned int plen, |
427 | unsigned int *len, unsigned char **p); | |
428 | int check_for_local_domain(char *name, time_t now, struct mx_record *mx); | |
fd9fa481 | 429 | unsigned int questions_crc(HEADER *header, unsigned int plen); |
36717eee SK |
430 | int resize_packet(HEADER *header, unsigned int plen, |
431 | unsigned char *pheader, unsigned int hlen); | |
9e4abcb5 SK |
432 | |
433 | /* util.c */ | |
434 | unsigned short rand16(void); | |
435 | int legal_char(char c); | |
436 | int canonicalise(char *s); | |
a222641c | 437 | int atoi_check(char *a, int *res); |
9e4abcb5 SK |
438 | void die(char *message, char *arg1); |
439 | void complain(char *message, char *arg1); | |
440 | void *safe_malloc(int size); | |
441 | char *safe_string_alloc(char *cp); | |
442 | int sa_len(union mysockaddr *addr); | |
443 | int sockaddr_isequal(union mysockaddr *s1, union mysockaddr *s2); | |
444 | int hostname_isequal(unsigned char *a, unsigned char *b); | |
44a2a316 | 445 | time_t dnsmasq_time(int fd); |
a84fa1d0 | 446 | int is_same_net(struct in_addr a, struct in_addr b, struct in_addr mask); |
fd9fa481 | 447 | int retry_send(void); |
a84fa1d0 | 448 | |
9e4abcb5 | 449 | /* option.c */ |
3be34541 | 450 | struct daemon *read_opts (int argc, char **argv); |
9e4abcb5 SK |
451 | |
452 | /* forward.c */ | |
453 | void forward_init(int first); | |
3be34541 SK |
454 | void reply_query(struct serverfd *sfd, struct daemon *daemon, time_t now); |
455 | void receive_query(struct listener *listen, struct daemon *daemon, time_t now); | |
456 | char *tcp_request(struct daemon *daemon, int confd, time_t now); | |
457 | ||
9e4abcb5 | 458 | /* network.c */ |
feba5c1d | 459 | struct serverfd *allocate_sfd(union mysockaddr *addr, struct serverfd **sfds); |
3be34541 SK |
460 | void reload_servers(char *fname, struct daemon *daemon); |
461 | void check_servers(struct daemon *daemon, struct irec *interfaces); | |
462 | struct irec *enumerate_interfaces(struct daemon *daemon); | |
44a2a316 | 463 | struct listener *create_wildcard_listeners(int port); |
feba5c1d | 464 | struct listener *create_bound_listeners(struct irec *interfaces, int port); |
3be34541 | 465 | |
9e4abcb5 | 466 | /* dhcp.c */ |
3be34541 SK |
467 | void dhcp_init(struct daemon *daemon); |
468 | void dhcp_packet(struct daemon *daemon, time_t now); | |
469 | ||
59353a6b SK |
470 | struct dhcp_context *address_available(struct dhcp_context *context, struct in_addr addr); |
471 | struct dhcp_context *narrow_context(struct dhcp_context *context, struct in_addr taddr); | |
3be34541 | 472 | int address_allocate(struct dhcp_context *context, struct daemon *daemon, |
a84fa1d0 | 473 | struct in_addr *addrp, unsigned char *hwaddr); |
9e4abcb5 SK |
474 | struct dhcp_config *find_config(struct dhcp_config *configs, |
475 | struct dhcp_context *context, | |
476 | unsigned char *clid, int clid_len, | |
477 | unsigned char *hwaddr, char *hostname); | |
44a2a316 | 478 | void dhcp_update_configs(struct dhcp_config *configs); |
3be34541 | 479 | void dhcp_read_ethers(struct daemon *daemon); |
dfa666f2 | 480 | struct dhcp_config *config_find_by_address(struct dhcp_config *configs, struct in_addr addr); |
bb01cb96 SK |
481 | char *strip_hostname(struct daemon *daemon, char *hostname); |
482 | char *host_from_dns(struct daemon *daemon, struct in_addr addr); | |
3be34541 | 483 | |
9e4abcb5 | 484 | /* lease.c */ |
44a2a316 | 485 | void lease_update_file(int force, time_t now); |
fd9fa481 | 486 | void lease_update_dns(struct daemon *daemon); |
3be34541 | 487 | void lease_init(struct daemon *daemon, time_t now); |
9e4abcb5 SK |
488 | struct dhcp_lease *lease_allocate(unsigned char *clid, int clid_len, struct in_addr addr); |
489 | void lease_set_hwaddr(struct dhcp_lease *lease, unsigned char *hwaddr); | |
490 | void lease_set_hostname(struct dhcp_lease *lease, char *name, char *suffix); | |
491 | void lease_set_expires(struct dhcp_lease *lease, time_t exp); | |
492 | struct dhcp_lease *lease_find_by_client(unsigned char *clid, int clid_len); | |
493 | struct dhcp_lease *lease_find_by_addr(struct in_addr addr); | |
494 | void lease_prune(struct dhcp_lease *target, time_t now); | |
44a2a316 | 495 | void lease_update_from_configs(struct dhcp_config *dhcp_configs, char *domain); |
a84fa1d0 | 496 | |
9e4abcb5 | 497 | /* rfc2131.c */ |
3be34541 SK |
498 | int dhcp_reply(struct daemon *daemon, struct in_addr iface_addr, char *iface_name, unsigned int sz, time_t now); |
499 | ||
500 | /* dnsmasq.c */ | |
501 | int icmp_ping(struct daemon *daemon, struct in_addr addr); | |
44a2a316 | 502 | |
33820b7e SK |
503 | /* isc.c */ |
504 | #ifdef HAVE_ISC_READER | |
fd9fa481 | 505 | void load_dhcp(struct daemon *daemon, time_t now); |
33820b7e | 506 | #endif |
feba5c1d | 507 |