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f6b7dc47 | 1 | /* dnsmasq is Copyright (c) 2000-2005 Simon Kelley |
9e4abcb5 SK |
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 | 14 | |
f6b7dc47 | 15 | #define COPYRIGHT "Copyright (C) 2000-2005 Simon Kelley" |
9e4abcb5 | 16 | |
44a2a316 | 17 | #ifdef __linux__ |
9e4abcb5 | 18 | /* for pselect.... */ |
f6b7dc47 | 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> | |
f6b7dc47 SK |
30 | #ifdef __APPLE__ |
31 | /* need this before arpa/nameser.h */ | |
32 | # define BIND_8_COMPAT | |
33 | #endif | |
3be34541 | 34 | #include <arpa/nameser.h> |
9e4abcb5 | 35 | |
59353a6b SK |
36 | /* and this. */ |
37 | #include <getopt.h> | |
38 | ||
9e4abcb5 | 39 | #include "config.h" |
44a2a316 | 40 | |
9e4abcb5 SK |
41 | #include <arpa/inet.h> |
42 | #include <sys/stat.h> | |
43 | #include <sys/socket.h> | |
9e4abcb5 SK |
44 | #include <sys/ioctl.h> |
45 | #include <sys/select.h> | |
feba5c1d | 46 | #include <sys/wait.h> |
9e4abcb5 | 47 | #if defined(__sun) || defined(__sun__) |
44a2a316 | 48 | # include <sys/sockio.h> |
9e4abcb5 SK |
49 | #endif |
50 | #include <sys/time.h> | |
8a911ccc | 51 | #include <limits.h> |
9e4abcb5 SK |
52 | #include <net/if.h> |
53 | #include <unistd.h> | |
54 | #include <stdio.h> | |
55 | #include <string.h> | |
56 | #include <stdlib.h> | |
57 | #include <fcntl.h> | |
58 | #include <ctype.h> | |
59 | #include <signal.h> | |
9e4abcb5 SK |
60 | #include <time.h> |
61 | #include <errno.h> | |
62 | #include <pwd.h> | |
63 | #include <grp.h> | |
f6b7dc47 | 64 | #include <stdarg.h> |
de37951c | 65 | #if defined(__OpenBSD__) || defined(__NetBSD__) |
44a2a316 SK |
66 | # include <netinet/if_ether.h> |
67 | #else | |
68 | # include <net/ethernet.h> | |
69 | #endif | |
9e4abcb5 SK |
70 | #include <net/if_arp.h> |
71 | #include <netinet/in_systm.h> | |
72 | #include <netinet/ip.h> | |
3be34541 | 73 | #include <netinet/ip_icmp.h> |
9e4abcb5 | 74 | #ifdef HAVE_BPF |
44a2a316 SK |
75 | # include <net/bpf.h> |
76 | # include <net/if_dl.h> | |
77 | #else | |
78 | # include <netpacket/packet.h> | |
9e4abcb5 SK |
79 | #endif |
80 | #include <sys/uio.h> | |
81 | ||
44a2a316 SK |
82 | /* Size: we check after adding each record, so there must be |
83 | memory for the largest packet, and the largest record */ | |
84 | #define DNSMASQ_PACKETSZ PACKETSZ+MAXDNAME+RRFIXEDSZ | |
85 | ||
9e4abcb5 SK |
86 | #define OPT_BOGUSPRIV 1 |
87 | #define OPT_FILTER 2 | |
88 | #define OPT_LOG 4 | |
89 | #define OPT_SELFMX 8 | |
90 | #define OPT_NO_HOSTS 16 | |
91 | #define OPT_NO_POLL 32 | |
92 | #define OPT_DEBUG 64 | |
93 | #define OPT_ORDER 128 | |
94 | #define OPT_NO_RESOLV 256 | |
95 | #define OPT_EXPAND 512 | |
96 | #define OPT_LOCALMX 1024 | |
97 | #define OPT_NO_NEG 2048 | |
98 | #define OPT_NODOTS_LOCAL 4096 | |
44a2a316 SK |
99 | #define OPT_NOWILD 8192 |
100 | #define OPT_ETHERS 16384 | |
de37951c | 101 | #define OPT_RESOLV_DOMAIN 32768 |
3be34541 | 102 | #define OPT_NO_FORK 65536 |
fd9fa481 | 103 | #define OPT_AUTHORITATIVE 131072 |
f6b7dc47 | 104 | #define OPT_LOCALISE 262144 |
9e4abcb5 SK |
105 | |
106 | struct all_addr { | |
107 | union { | |
108 | struct in_addr addr4; | |
109 | #ifdef HAVE_IPV6 | |
110 | struct in6_addr addr6; | |
111 | #endif | |
112 | } addr; | |
113 | }; | |
114 | ||
115 | struct bogus_addr { | |
116 | struct in_addr addr; | |
117 | struct bogus_addr *next; | |
118 | }; | |
119 | ||
1cff166d SK |
120 | /* dns doctor param */ |
121 | struct doctor { | |
122 | struct in_addr in, out, mask; | |
123 | struct doctor *next; | |
124 | }; | |
125 | ||
de37951c SK |
126 | struct mx_record { |
127 | char *mxname, *mxtarget; | |
f6b7dc47 | 128 | int preference; |
de37951c SK |
129 | struct mx_record *next; |
130 | }; | |
131 | ||
f6b7dc47 SK |
132 | struct srv_record { |
133 | char *srvname, *srvtarget; | |
134 | int srvport, priority, weight; | |
135 | struct srv_record *next; | |
136 | }; | |
137 | ||
9e4abcb5 SK |
138 | union bigname { |
139 | char name[MAXDNAME]; | |
140 | union bigname *next; /* freelist */ | |
141 | }; | |
142 | ||
143 | struct crec { | |
144 | struct crec *next, *prev, *hash_next; | |
145 | time_t ttd; /* time to die */ | |
fd9fa481 SK |
146 | int uid; |
147 | union { | |
148 | struct all_addr addr; | |
149 | struct { | |
150 | struct crec *cache; | |
151 | int uid; | |
152 | } cname; | |
153 | } addr; | |
9e4abcb5 SK |
154 | unsigned short flags; |
155 | union { | |
156 | char sname[SMALLDNAME]; | |
157 | union bigname *bname; | |
158 | char *namep; | |
159 | } name; | |
160 | }; | |
161 | ||
162 | #define F_IMMORTAL 1 | |
fd9fa481 | 163 | #define F_CONFIG 2 |
9e4abcb5 SK |
164 | #define F_REVERSE 4 |
165 | #define F_FORWARD 8 | |
166 | #define F_DHCP 16 | |
167 | #define F_NEG 32 | |
168 | #define F_HOSTS 64 | |
169 | #define F_IPV4 128 | |
170 | #define F_IPV6 256 | |
171 | #define F_BIGNAME 512 | |
172 | #define F_UPSTREAM 1024 | |
173 | #define F_SERVER 2048 | |
174 | #define F_NXDOMAIN 4096 | |
175 | #define F_QUERY 8192 | |
fd9fa481 | 176 | #define F_CNAME 16384 |
9e4abcb5 SK |
177 | #define F_NOERR 32768 |
178 | ||
179 | /* struct sockaddr is not large enough to hold any address, | |
180 | and specifically not big enough to hold and IPv6 address. | |
181 | Blech. Roll our own. */ | |
182 | union mysockaddr { | |
183 | struct sockaddr sa; | |
184 | struct sockaddr_in in; | |
185 | #ifdef HAVE_BROKEN_SOCKADDR_IN6 | |
186 | /* early versions of glibc don't include sin6_scope_id in sockaddr_in6 | |
187 | but latest kernels _require_ it to be set. The choice is to have | |
188 | dnsmasq fail to compile on back-level libc or fail to run | |
189 | on latest kernels with IPv6. Or to do this: sorry that it's so gross. */ | |
190 | struct my_sockaddr_in6 { | |
191 | sa_family_t sin6_family; /* AF_INET6 */ | |
192 | uint16_t sin6_port; /* transport layer port # */ | |
193 | uint32_t sin6_flowinfo; /* IPv6 traffic class & flow info */ | |
194 | struct in6_addr sin6_addr; /* IPv6 address */ | |
195 | uint32_t sin6_scope_id; /* set of interfaces for a scope */ | |
196 | } in6; | |
197 | #elif defined(HAVE_IPV6) | |
198 | struct sockaddr_in6 in6; | |
199 | #endif | |
200 | }; | |
201 | ||
202 | #define SERV_FROM_RESOLV 1 /* 1 for servers from resolv, 0 for command line. */ | |
203 | #define SERV_NO_ADDR 2 /* no server, this domain is local only */ | |
204 | #define SERV_LITERAL_ADDRESS 4 /* addr is the answer, not the server */ | |
205 | #define SERV_HAS_SOURCE 8 /* source address specified */ | |
206 | #define SERV_HAS_DOMAIN 16 /* server for one domain only */ | |
207 | #define SERV_FOR_NODOTS 32 /* server for names with no domain part only */ | |
208 | #define SERV_TYPE (SERV_HAS_DOMAIN | SERV_FOR_NODOTS) | |
209 | ||
210 | struct serverfd { | |
211 | int fd; | |
212 | union mysockaddr source_addr; | |
213 | struct serverfd *next; | |
214 | }; | |
215 | ||
216 | struct server { | |
217 | union mysockaddr addr, source_addr; | |
218 | struct serverfd *sfd; /* non-NULL if this server has its own fd bound to | |
219 | a source port */ | |
220 | char *domain; /* set if this server only handles a domain. */ | |
feba5c1d | 221 | int flags, tcpfd; |
9e4abcb5 SK |
222 | struct server *next; |
223 | }; | |
224 | ||
9e4abcb5 SK |
225 | struct irec { |
226 | union mysockaddr addr; | |
f6b7dc47 | 227 | struct in_addr netmask; /* only valid for IPv4 */ |
9e4abcb5 SK |
228 | struct irec *next; |
229 | }; | |
230 | ||
44a2a316 | 231 | struct listener { |
feba5c1d | 232 | int fd, tcpfd, family; |
f6b7dc47 | 233 | struct irec *iface; /* only valid for non-wildcard */ |
44a2a316 SK |
234 | struct listener *next; |
235 | }; | |
236 | ||
9e4abcb5 SK |
237 | /* interface and address parms from command line. */ |
238 | struct iname { | |
239 | char *name; | |
240 | union mysockaddr addr; | |
de37951c | 241 | int isloop, used; |
9e4abcb5 SK |
242 | struct iname *next; |
243 | }; | |
244 | ||
245 | /* resolv-file parms from command-line */ | |
246 | struct resolvc { | |
247 | struct resolvc *next; | |
248 | int is_default; | |
249 | int logged; | |
250 | char *name; | |
251 | }; | |
252 | ||
fd9fa481 SK |
253 | /* adn-hosts parms from command-line */ |
254 | struct hostsfile { | |
255 | struct hostsfile *next; | |
256 | char *fname; | |
257 | int index; /* matches to cache entries fro logging */ | |
258 | }; | |
259 | ||
9e4abcb5 SK |
260 | struct frec { |
261 | union mysockaddr source; | |
44a2a316 | 262 | struct all_addr dest; |
9e4abcb5 | 263 | struct server *sentto; |
dfa666f2 | 264 | unsigned int iface; |
9e4abcb5 SK |
265 | unsigned short orig_id, new_id; |
266 | int fd; | |
fd9fa481 | 267 | unsigned int crc; |
9e4abcb5 SK |
268 | time_t time; |
269 | struct frec *next; | |
270 | }; | |
271 | ||
272 | struct dhcp_lease { | |
273 | int clid_len; /* length of client identifier */ | |
274 | unsigned char *clid; /* clientid */ | |
275 | char *hostname, *fqdn; /* name from client-hostname option or config */ | |
276 | time_t expires; /* lease expiry */ | |
277 | unsigned char hwaddr[ETHER_ADDR_LEN]; | |
278 | struct in_addr addr; | |
279 | struct dhcp_lease *next; | |
280 | }; | |
281 | ||
a222641c SK |
282 | struct dhcp_netid { |
283 | char *net; | |
284 | struct dhcp_netid *next; | |
285 | }; | |
286 | ||
26128d27 SK |
287 | struct dhcp_netid_list { |
288 | struct dhcp_netid *list; | |
289 | struct dhcp_netid_list *next; | |
290 | }; | |
9e4abcb5 | 291 | struct dhcp_config { |
33820b7e | 292 | unsigned int flags; |
9e4abcb5 SK |
293 | int clid_len; /* length of client identifier */ |
294 | unsigned char *clid; /* clientid */ | |
295 | unsigned char hwaddr[ETHER_ADDR_LEN]; | |
a222641c SK |
296 | char *hostname; |
297 | struct dhcp_netid netid; | |
9e4abcb5 SK |
298 | struct in_addr addr; |
299 | unsigned int lease_time; | |
300 | struct dhcp_config *next; | |
301 | }; | |
302 | ||
33820b7e SK |
303 | #define CONFIG_DISABLE 1 |
304 | #define CONFIG_CLID 2 | |
305 | #define CONFIG_HWADDR 4 | |
306 | #define CONFIG_TIME 8 | |
307 | #define CONFIG_NAME 16 | |
308 | #define CONFIG_ADDR 32 | |
309 | #define CONFIG_NETID 64 | |
a84fa1d0 | 310 | #define CONFIG_NOCLID 128 |
33820b7e | 311 | |
9e4abcb5 | 312 | struct dhcp_opt { |
1ab84e2f | 313 | int opt, len, is_addr; |
9e4abcb5 | 314 | unsigned char *val; |
26128d27 | 315 | struct dhcp_netid *netid; |
9e4abcb5 | 316 | struct dhcp_opt *next; |
a84fa1d0 SK |
317 | }; |
318 | ||
26128d27 SK |
319 | struct dhcp_boot { |
320 | char *file, *sname; | |
321 | struct in_addr next_server; | |
322 | struct dhcp_netid *netid; | |
323 | struct dhcp_boot *next; | |
324 | }; | |
325 | ||
a84fa1d0 | 326 | struct dhcp_vendor { |
26128d27 | 327 | int len, is_vendor; |
a222641c SK |
328 | char *data; |
329 | struct dhcp_netid netid; | |
a84fa1d0 SK |
330 | struct dhcp_vendor *next; |
331 | }; | |
9e4abcb5 SK |
332 | |
333 | struct dhcp_context { | |
feba5c1d | 334 | unsigned int lease_time, addr_epoch; |
3be34541 | 335 | struct in_addr netmask, broadcast, router; |
a84fa1d0 | 336 | struct in_addr start, end; /* range of available addresses */ |
f6b7dc47 | 337 | int static_only, filter_netid; |
a222641c | 338 | struct dhcp_netid netid; |
36717eee | 339 | struct dhcp_context *next, *current; |
9e4abcb5 SK |
340 | }; |
341 | ||
342 | typedef unsigned char u8; | |
343 | typedef unsigned short u16; | |
344 | typedef unsigned int u32; | |
345 | ||
346 | ||
347 | struct udp_dhcp_packet { | |
348 | struct ip ip; | |
349 | struct udphdr { | |
350 | u16 uh_sport; /* source port */ | |
351 | u16 uh_dport; /* destination port */ | |
352 | u16 uh_ulen; /* udp length */ | |
353 | u16 uh_sum; /* udp checksum */ | |
354 | } udp; | |
355 | struct dhcp_packet { | |
356 | u8 op, htype, hlen, hops; | |
357 | u32 xid; | |
358 | u16 secs, flags; | |
359 | struct in_addr ciaddr, yiaddr, siaddr, giaddr; | |
360 | u8 chaddr[16], sname[64], file[128]; | |
3be34541 | 361 | u8 options[312]; |
9e4abcb5 SK |
362 | } data; |
363 | }; | |
364 | ||
365 | ||
3be34541 SK |
366 | struct daemon { |
367 | /* datastuctures representing the command-line and | |
368 | config file arguments. All set (including defaults) | |
369 | in option.c */ | |
370 | ||
371 | unsigned int options; | |
372 | struct resolvc default_resolv, *resolv_files; | |
373 | struct mx_record *mxnames; | |
374 | char *mxtarget; | |
375 | char *lease_file; | |
376 | char *username, *groupname; | |
377 | char *domain_suffix; | |
f6b7dc47 | 378 | struct srv_record *srvnames; |
3be34541 SK |
379 | char *runfile; |
380 | struct iname *if_names, *if_addrs, *if_except; | |
381 | struct bogus_addr *bogus_addr; | |
382 | struct server *servers; | |
383 | int cachesize; | |
384 | int port, query_port; | |
385 | unsigned long local_ttl; | |
fd9fa481 | 386 | struct hostsfile *addn_hosts; |
3be34541 SK |
387 | struct dhcp_context *dhcp; |
388 | struct dhcp_config *dhcp_conf; | |
389 | struct dhcp_opt *dhcp_opts; | |
390 | struct dhcp_vendor *dhcp_vendors; | |
26128d27 SK |
391 | struct dhcp_boot *boot_config; |
392 | struct dhcp_netid_list *dhcp_ignore; | |
3be34541 SK |
393 | int dhcp_max; |
394 | unsigned int min_leasetime; | |
395 | struct doctor *doctors; | |
396 | unsigned short edns_pktsz; | |
397 | ||
398 | /* globally used stuff for DNS */ | |
399 | char *packet; /* packet buffer */ | |
400 | char *namebuff; /* MAXDNAME size buffer */ | |
401 | struct serverfd *sfds; | |
402 | struct listener *listeners; | |
403 | struct server *last_server; | |
404 | int uptime_fd; | |
405 | ||
406 | /* DHCP state */ | |
407 | int dhcpfd, dhcp_raw_fd, dhcp_icmp_fd, lease_fd; | |
408 | struct udp_dhcp_packet *dhcp_packet; | |
409 | char *dhcp_buff, *dhcp_buff2; | |
410 | }; | |
411 | ||
9e4abcb5 SK |
412 | /* cache.c */ |
413 | void cache_init(int cachesize, int log); | |
fd9fa481 SK |
414 | void log_query(unsigned short flags, char *name, struct all_addr *addr, |
415 | unsigned short type, struct hostsfile *addn_hosts, int index); | |
9e4abcb5 SK |
416 | struct crec *cache_find_by_addr(struct crec *crecp, |
417 | struct all_addr *addr, time_t now, | |
418 | unsigned short prot); | |
419 | struct crec *cache_find_by_name(struct crec *crecp, | |
420 | char *name, time_t now, unsigned short prot); | |
421 | void cache_end_insert(void); | |
422 | void cache_start_insert(void); | |
fd9fa481 SK |
423 | struct crec *cache_insert(char *name, struct all_addr *addr, |
424 | time_t now, unsigned long ttl, unsigned short flags); | |
425 | void cache_reload(int opts, char *buff, char *domain_suffix, struct hostsfile *addn_hosts); | |
426 | void cache_add_dhcp_entry(struct daemon *daemon, char *host_name, struct in_addr *host_address, time_t ttd); | |
9e4abcb5 | 427 | void cache_unhash_dhcp(void); |
fd9fa481 | 428 | void dump_cache(struct daemon *daemon); |
9e4abcb5 SK |
429 | char *cache_get_name(struct crec *crecp); |
430 | ||
431 | /* rfc1035.c */ | |
c1bb8504 SK |
432 | unsigned short extract_request(HEADER *header, unsigned int qlen, |
433 | char *name, unsigned short *typep); | |
9e4abcb5 SK |
434 | int setup_reply(HEADER *header, unsigned int qlen, |
435 | struct all_addr *addrp, unsigned short flags, | |
436 | unsigned long local_ttl); | |
1cff166d | 437 | void extract_addresses(HEADER *header, unsigned int qlen, char *namebuff, |
fd9fa481 | 438 | time_t now, struct daemon *daemon); |
f6b7dc47 SK |
439 | int answer_request(HEADER *header, char *limit, unsigned int qlen, struct daemon *daemon, |
440 | struct in_addr local_addr, struct in_addr local_netmask, time_t now); | |
9e4abcb5 SK |
441 | int check_for_bogus_wildcard(HEADER *header, unsigned int qlen, char *name, |
442 | struct bogus_addr *addr, time_t now); | |
36717eee SK |
443 | unsigned char *find_pseudoheader(HEADER *header, unsigned int plen, |
444 | unsigned int *len, unsigned char **p); | |
f6b7dc47 | 445 | int check_for_local_domain(char *name, time_t now, struct daemon *daemon); |
fd9fa481 | 446 | unsigned int questions_crc(HEADER *header, unsigned int plen); |
36717eee SK |
447 | int resize_packet(HEADER *header, unsigned int plen, |
448 | unsigned char *pheader, unsigned int hlen); | |
9e4abcb5 SK |
449 | |
450 | /* util.c */ | |
451 | unsigned short rand16(void); | |
452 | int legal_char(char c); | |
453 | int canonicalise(char *s); | |
a222641c | 454 | int atoi_check(char *a, int *res); |
9e4abcb5 SK |
455 | void die(char *message, char *arg1); |
456 | void complain(char *message, char *arg1); | |
457 | void *safe_malloc(int size); | |
458 | char *safe_string_alloc(char *cp); | |
459 | int sa_len(union mysockaddr *addr); | |
460 | int sockaddr_isequal(union mysockaddr *s1, union mysockaddr *s2); | |
461 | int hostname_isequal(unsigned char *a, unsigned char *b); | |
44a2a316 | 462 | time_t dnsmasq_time(int fd); |
a84fa1d0 | 463 | int is_same_net(struct in_addr a, struct in_addr b, struct in_addr mask); |
fd9fa481 | 464 | int retry_send(void); |
a84fa1d0 | 465 | |
9e4abcb5 | 466 | /* option.c */ |
3be34541 | 467 | struct daemon *read_opts (int argc, char **argv); |
9e4abcb5 SK |
468 | |
469 | /* forward.c */ | |
470 | void forward_init(int first); | |
3be34541 SK |
471 | void reply_query(struct serverfd *sfd, struct daemon *daemon, time_t now); |
472 | void receive_query(struct listener *listen, struct daemon *daemon, time_t now); | |
f6b7dc47 SK |
473 | char *tcp_request(struct daemon *daemon, int confd, time_t now, |
474 | struct in_addr local_addr, struct in_addr netmask); | |
3be34541 | 475 | |
9e4abcb5 | 476 | /* network.c */ |
feba5c1d | 477 | struct serverfd *allocate_sfd(union mysockaddr *addr, struct serverfd **sfds); |
3be34541 SK |
478 | void reload_servers(char *fname, struct daemon *daemon); |
479 | void check_servers(struct daemon *daemon, struct irec *interfaces); | |
f6b7dc47 SK |
480 | int enumerate_interfaces(struct daemon *daemon, struct irec **chainp, |
481 | union mysockaddr *test_addrp, struct in_addr *netmaskp); | |
44a2a316 | 482 | struct listener *create_wildcard_listeners(int port); |
feba5c1d | 483 | struct listener *create_bound_listeners(struct irec *interfaces, int port); |
3be34541 | 484 | |
9e4abcb5 | 485 | /* dhcp.c */ |
3be34541 SK |
486 | void dhcp_init(struct daemon *daemon); |
487 | void dhcp_packet(struct daemon *daemon, time_t now); | |
488 | ||
59353a6b SK |
489 | struct dhcp_context *address_available(struct dhcp_context *context, struct in_addr addr); |
490 | struct dhcp_context *narrow_context(struct dhcp_context *context, struct in_addr taddr); | |
f6b7dc47 | 491 | int match_netid(struct dhcp_netid *check, struct dhcp_netid *pool); |
3be34541 | 492 | int address_allocate(struct dhcp_context *context, struct daemon *daemon, |
f6b7dc47 SK |
493 | struct in_addr *addrp, unsigned char *hwaddr, |
494 | struct dhcp_netid *netids); | |
9e4abcb5 SK |
495 | struct dhcp_config *find_config(struct dhcp_config *configs, |
496 | struct dhcp_context *context, | |
497 | unsigned char *clid, int clid_len, | |
498 | unsigned char *hwaddr, char *hostname); | |
44a2a316 | 499 | void dhcp_update_configs(struct dhcp_config *configs); |
3be34541 | 500 | void dhcp_read_ethers(struct daemon *daemon); |
dfa666f2 | 501 | struct dhcp_config *config_find_by_address(struct dhcp_config *configs, struct in_addr addr); |
bb01cb96 SK |
502 | char *strip_hostname(struct daemon *daemon, char *hostname); |
503 | char *host_from_dns(struct daemon *daemon, struct in_addr addr); | |
3be34541 | 504 | |
9e4abcb5 | 505 | /* lease.c */ |
44a2a316 | 506 | void lease_update_file(int force, time_t now); |
fd9fa481 | 507 | void lease_update_dns(struct daemon *daemon); |
3be34541 | 508 | void lease_init(struct daemon *daemon, time_t now); |
9e4abcb5 SK |
509 | struct dhcp_lease *lease_allocate(unsigned char *clid, int clid_len, struct in_addr addr); |
510 | void lease_set_hwaddr(struct dhcp_lease *lease, unsigned char *hwaddr); | |
511 | void lease_set_hostname(struct dhcp_lease *lease, char *name, char *suffix); | |
512 | void lease_set_expires(struct dhcp_lease *lease, time_t exp); | |
513 | struct dhcp_lease *lease_find_by_client(unsigned char *clid, int clid_len); | |
514 | struct dhcp_lease *lease_find_by_addr(struct in_addr addr); | |
515 | void lease_prune(struct dhcp_lease *target, time_t now); | |
44a2a316 | 516 | void lease_update_from_configs(struct dhcp_config *dhcp_configs, char *domain); |
a84fa1d0 | 517 | |
9e4abcb5 | 518 | /* rfc2131.c */ |
3be34541 SK |
519 | int dhcp_reply(struct daemon *daemon, struct in_addr iface_addr, char *iface_name, unsigned int sz, time_t now); |
520 | ||
521 | /* dnsmasq.c */ | |
522 | int icmp_ping(struct daemon *daemon, struct in_addr addr); | |
44a2a316 | 523 | |
33820b7e SK |
524 | /* isc.c */ |
525 | #ifdef HAVE_ISC_READER | |
fd9fa481 | 526 | void load_dhcp(struct daemon *daemon, time_t now); |
33820b7e | 527 | #endif |
feba5c1d | 528 |