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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 | ||
0a852541 SK |
82 | /* Min buffer size: we check after adding each record, so there must be |
83 | memory for the largest packet, and the largest record so the | |
84 | min for DNS is PACKETSZ+MAXDNAME+RRFIXEDSZ which is < 1000. | |
85 | This might be increased is EDNS packet size if greater than the minimum. | |
86 | The buffer is also used for NETLINK, which needs to be about 2000 | |
87 | on systems with many interfaces/addresses. */ | |
88 | #ifdef HAVE_RTNETLINK | |
89 | # define DNSMASQ_PACKETSZ PACKETSZ+MAXDNAME+RRFIXEDSZ | |
90 | #else | |
91 | # define DNSMASQ_PACKETSZ 2000 | |
92 | #endif | |
44a2a316 | 93 | |
9e4abcb5 SK |
94 | #define OPT_BOGUSPRIV 1 |
95 | #define OPT_FILTER 2 | |
96 | #define OPT_LOG 4 | |
97 | #define OPT_SELFMX 8 | |
98 | #define OPT_NO_HOSTS 16 | |
99 | #define OPT_NO_POLL 32 | |
100 | #define OPT_DEBUG 64 | |
101 | #define OPT_ORDER 128 | |
102 | #define OPT_NO_RESOLV 256 | |
103 | #define OPT_EXPAND 512 | |
104 | #define OPT_LOCALMX 1024 | |
105 | #define OPT_NO_NEG 2048 | |
106 | #define OPT_NODOTS_LOCAL 4096 | |
44a2a316 SK |
107 | #define OPT_NOWILD 8192 |
108 | #define OPT_ETHERS 16384 | |
de37951c | 109 | #define OPT_RESOLV_DOMAIN 32768 |
3be34541 | 110 | #define OPT_NO_FORK 65536 |
fd9fa481 | 111 | #define OPT_AUTHORITATIVE 131072 |
f6b7dc47 | 112 | #define OPT_LOCALISE 262144 |
3d8df260 SK |
113 | #define OPT_DBUS 524288 |
114 | #define OPT_BOOTP_DYNAMIC 1048576 | |
9e4abcb5 SK |
115 | |
116 | struct all_addr { | |
117 | union { | |
118 | struct in_addr addr4; | |
119 | #ifdef HAVE_IPV6 | |
120 | struct in6_addr addr6; | |
121 | #endif | |
122 | } addr; | |
123 | }; | |
124 | ||
125 | struct bogus_addr { | |
126 | struct in_addr addr; | |
127 | struct bogus_addr *next; | |
128 | }; | |
129 | ||
1cff166d SK |
130 | /* dns doctor param */ |
131 | struct doctor { | |
132 | struct in_addr in, out, mask; | |
133 | struct doctor *next; | |
134 | }; | |
135 | ||
0a852541 SK |
136 | struct mx_srv_record { |
137 | char *name, *target; | |
3d8df260 SK |
138 | int issrv, srvport, priority, weight; |
139 | unsigned int offset; | |
0a852541 | 140 | struct mx_srv_record *next; |
de37951c SK |
141 | }; |
142 | ||
0a852541 SK |
143 | struct txt_record { |
144 | char *name, *txt; | |
145 | unsigned short class, len; | |
146 | struct txt_record *next; | |
f6b7dc47 SK |
147 | }; |
148 | ||
9e4abcb5 SK |
149 | union bigname { |
150 | char name[MAXDNAME]; | |
151 | union bigname *next; /* freelist */ | |
152 | }; | |
153 | ||
154 | struct crec { | |
155 | struct crec *next, *prev, *hash_next; | |
156 | time_t ttd; /* time to die */ | |
fd9fa481 SK |
157 | int uid; |
158 | union { | |
159 | struct all_addr addr; | |
160 | struct { | |
161 | struct crec *cache; | |
162 | int uid; | |
163 | } cname; | |
164 | } addr; | |
9e4abcb5 SK |
165 | unsigned short flags; |
166 | union { | |
167 | char sname[SMALLDNAME]; | |
168 | union bigname *bname; | |
169 | char *namep; | |
170 | } name; | |
171 | }; | |
172 | ||
173 | #define F_IMMORTAL 1 | |
fd9fa481 | 174 | #define F_CONFIG 2 |
9e4abcb5 SK |
175 | #define F_REVERSE 4 |
176 | #define F_FORWARD 8 | |
177 | #define F_DHCP 16 | |
178 | #define F_NEG 32 | |
179 | #define F_HOSTS 64 | |
180 | #define F_IPV4 128 | |
181 | #define F_IPV6 256 | |
182 | #define F_BIGNAME 512 | |
183 | #define F_UPSTREAM 1024 | |
184 | #define F_SERVER 2048 | |
185 | #define F_NXDOMAIN 4096 | |
186 | #define F_QUERY 8192 | |
fd9fa481 | 187 | #define F_CNAME 16384 |
9e4abcb5 SK |
188 | #define F_NOERR 32768 |
189 | ||
190 | /* struct sockaddr is not large enough to hold any address, | |
191 | and specifically not big enough to hold and IPv6 address. | |
192 | Blech. Roll our own. */ | |
193 | union mysockaddr { | |
194 | struct sockaddr sa; | |
195 | struct sockaddr_in in; | |
196 | #ifdef HAVE_BROKEN_SOCKADDR_IN6 | |
197 | /* early versions of glibc don't include sin6_scope_id in sockaddr_in6 | |
198 | but latest kernels _require_ it to be set. The choice is to have | |
199 | dnsmasq fail to compile on back-level libc or fail to run | |
200 | on latest kernels with IPv6. Or to do this: sorry that it's so gross. */ | |
201 | struct my_sockaddr_in6 { | |
202 | sa_family_t sin6_family; /* AF_INET6 */ | |
203 | uint16_t sin6_port; /* transport layer port # */ | |
204 | uint32_t sin6_flowinfo; /* IPv6 traffic class & flow info */ | |
205 | struct in6_addr sin6_addr; /* IPv6 address */ | |
206 | uint32_t sin6_scope_id; /* set of interfaces for a scope */ | |
207 | } in6; | |
208 | #elif defined(HAVE_IPV6) | |
209 | struct sockaddr_in6 in6; | |
210 | #endif | |
211 | }; | |
212 | ||
0a852541 SK |
213 | #define SERV_FROM_RESOLV 1 /* 1 for servers from resolv, 0 for command line. */ |
214 | #define SERV_NO_ADDR 2 /* no server, this domain is local only */ | |
215 | #define SERV_LITERAL_ADDRESS 4 /* addr is the answer, not the server */ | |
216 | #define SERV_HAS_SOURCE 8 /* source address specified */ | |
217 | #define SERV_HAS_DOMAIN 16 /* server for one domain only */ | |
218 | #define SERV_FOR_NODOTS 32 /* server for names with no domain part only */ | |
219 | #define SERV_WARNED_RECURSIVE 64 /* avoid warning spam */ | |
3d8df260 SK |
220 | #define SERV_FROM_DBUS 128 /* 1 if source is DBus */ |
221 | #define SERV_MARK 256 /* for mark-and-delete */ | |
9e4abcb5 SK |
222 | #define SERV_TYPE (SERV_HAS_DOMAIN | SERV_FOR_NODOTS) |
223 | ||
0a852541 | 224 | |
9e4abcb5 SK |
225 | struct serverfd { |
226 | int fd; | |
227 | union mysockaddr source_addr; | |
228 | struct serverfd *next; | |
229 | }; | |
230 | ||
231 | struct server { | |
232 | union mysockaddr addr, source_addr; | |
233 | struct serverfd *sfd; /* non-NULL if this server has its own fd bound to | |
234 | a source port */ | |
235 | char *domain; /* set if this server only handles a domain. */ | |
feba5c1d | 236 | int flags, tcpfd; |
9e4abcb5 SK |
237 | struct server *next; |
238 | }; | |
239 | ||
9e4abcb5 SK |
240 | struct irec { |
241 | union mysockaddr addr; | |
f6b7dc47 | 242 | struct in_addr netmask; /* only valid for IPv4 */ |
9e4abcb5 SK |
243 | struct irec *next; |
244 | }; | |
245 | ||
44a2a316 | 246 | struct listener { |
feba5c1d | 247 | int fd, tcpfd, family; |
f6b7dc47 | 248 | struct irec *iface; /* only valid for non-wildcard */ |
44a2a316 SK |
249 | struct listener *next; |
250 | }; | |
251 | ||
9e4abcb5 SK |
252 | /* interface and address parms from command line. */ |
253 | struct iname { | |
254 | char *name; | |
255 | union mysockaddr addr; | |
de37951c | 256 | int isloop, used; |
9e4abcb5 SK |
257 | struct iname *next; |
258 | }; | |
259 | ||
260 | /* resolv-file parms from command-line */ | |
261 | struct resolvc { | |
262 | struct resolvc *next; | |
3d8df260 SK |
263 | int is_default, logged; |
264 | time_t mtime; | |
9e4abcb5 SK |
265 | char *name; |
266 | }; | |
267 | ||
fd9fa481 SK |
268 | /* adn-hosts parms from command-line */ |
269 | struct hostsfile { | |
270 | struct hostsfile *next; | |
271 | char *fname; | |
272 | int index; /* matches to cache entries fro logging */ | |
273 | }; | |
274 | ||
9e4abcb5 SK |
275 | struct frec { |
276 | union mysockaddr source; | |
44a2a316 | 277 | struct all_addr dest; |
9e4abcb5 | 278 | struct server *sentto; |
dfa666f2 | 279 | unsigned int iface; |
9e4abcb5 | 280 | unsigned short orig_id, new_id; |
0a852541 | 281 | int fd, forwardall; |
fd9fa481 | 282 | unsigned int crc; |
9e4abcb5 SK |
283 | time_t time; |
284 | struct frec *next; | |
285 | }; | |
286 | ||
287 | struct dhcp_lease { | |
288 | int clid_len; /* length of client identifier */ | |
289 | unsigned char *clid; /* clientid */ | |
290 | char *hostname, *fqdn; /* name from client-hostname option or config */ | |
291 | time_t expires; /* lease expiry */ | |
292 | unsigned char hwaddr[ETHER_ADDR_LEN]; | |
293 | struct in_addr addr; | |
294 | struct dhcp_lease *next; | |
295 | }; | |
296 | ||
a222641c SK |
297 | struct dhcp_netid { |
298 | char *net; | |
299 | struct dhcp_netid *next; | |
300 | }; | |
301 | ||
26128d27 SK |
302 | struct dhcp_netid_list { |
303 | struct dhcp_netid *list; | |
304 | struct dhcp_netid_list *next; | |
305 | }; | |
9e4abcb5 | 306 | struct dhcp_config { |
33820b7e | 307 | unsigned int flags; |
9e4abcb5 SK |
308 | int clid_len; /* length of client identifier */ |
309 | unsigned char *clid; /* clientid */ | |
310 | unsigned char hwaddr[ETHER_ADDR_LEN]; | |
a222641c SK |
311 | char *hostname; |
312 | struct dhcp_netid netid; | |
9e4abcb5 | 313 | struct in_addr addr; |
0a852541 | 314 | unsigned int lease_time, wildcard_mask; |
9e4abcb5 SK |
315 | struct dhcp_config *next; |
316 | }; | |
317 | ||
0a852541 SK |
318 | #define CONFIG_DISABLE 1 |
319 | #define CONFIG_CLID 2 | |
320 | #define CONFIG_HWADDR 4 | |
321 | #define CONFIG_TIME 8 | |
322 | #define CONFIG_NAME 16 | |
323 | #define CONFIG_ADDR 32 | |
324 | #define CONFIG_NETID 64 | |
325 | #define CONFIG_NOCLID 128 | |
33820b7e | 326 | |
9e4abcb5 | 327 | struct dhcp_opt { |
1ab84e2f | 328 | int opt, len, is_addr; |
91dccd09 | 329 | unsigned char *val, *vendor_class; |
26128d27 | 330 | struct dhcp_netid *netid; |
9e4abcb5 | 331 | struct dhcp_opt *next; |
a84fa1d0 SK |
332 | }; |
333 | ||
26128d27 SK |
334 | struct dhcp_boot { |
335 | char *file, *sname; | |
336 | struct in_addr next_server; | |
337 | struct dhcp_netid *netid; | |
338 | struct dhcp_boot *next; | |
339 | }; | |
340 | ||
a84fa1d0 | 341 | struct dhcp_vendor { |
26128d27 | 342 | int len, is_vendor; |
a222641c SK |
343 | char *data; |
344 | struct dhcp_netid netid; | |
a84fa1d0 SK |
345 | struct dhcp_vendor *next; |
346 | }; | |
9e4abcb5 SK |
347 | |
348 | struct dhcp_context { | |
feba5c1d | 349 | unsigned int lease_time, addr_epoch; |
0a852541 SK |
350 | struct in_addr netmask, broadcast; |
351 | struct in_addr local, router; | |
a84fa1d0 | 352 | struct in_addr start, end; /* range of available addresses */ |
0a852541 | 353 | int flags; |
a222641c | 354 | struct dhcp_netid netid; |
36717eee | 355 | struct dhcp_context *next, *current; |
9e4abcb5 SK |
356 | }; |
357 | ||
0a852541 SK |
358 | #define CONTEXT_STATIC 1 |
359 | #define CONTEXT_FILTER 2 | |
360 | #define CONTEXT_NETMASK 4 | |
361 | #define CONTEXT_BRDCAST 8 | |
362 | ||
363 | ||
9e4abcb5 SK |
364 | typedef unsigned char u8; |
365 | typedef unsigned short u16; | |
366 | typedef unsigned int u32; | |
367 | ||
368 | ||
369 | struct udp_dhcp_packet { | |
370 | struct ip ip; | |
371 | struct udphdr { | |
372 | u16 uh_sport; /* source port */ | |
373 | u16 uh_dport; /* destination port */ | |
374 | u16 uh_ulen; /* udp length */ | |
375 | u16 uh_sum; /* udp checksum */ | |
376 | } udp; | |
377 | struct dhcp_packet { | |
378 | u8 op, htype, hlen, hops; | |
379 | u32 xid; | |
380 | u16 secs, flags; | |
381 | struct in_addr ciaddr, yiaddr, siaddr, giaddr; | |
382 | u8 chaddr[16], sname[64], file[128]; | |
3be34541 | 383 | u8 options[312]; |
9e4abcb5 SK |
384 | } data; |
385 | }; | |
386 | ||
3d8df260 SK |
387 | struct ping_result { |
388 | struct in_addr addr; | |
389 | time_t time; | |
390 | struct ping_result *next; | |
391 | }; | |
9e4abcb5 | 392 | |
3be34541 SK |
393 | struct daemon { |
394 | /* datastuctures representing the command-line and | |
395 | config file arguments. All set (including defaults) | |
396 | in option.c */ | |
397 | ||
398 | unsigned int options; | |
399 | struct resolvc default_resolv, *resolv_files; | |
0a852541 SK |
400 | struct mx_srv_record *mxnames; |
401 | struct txt_record *txt; | |
3be34541 SK |
402 | char *mxtarget; |
403 | char *lease_file; | |
404 | char *username, *groupname; | |
405 | char *domain_suffix; | |
406 | char *runfile; | |
3d8df260 | 407 | struct iname *if_names, *if_addrs, *if_except, *dhcp_except; |
3be34541 SK |
408 | struct bogus_addr *bogus_addr; |
409 | struct server *servers; | |
410 | int cachesize; | |
411 | int port, query_port; | |
412 | unsigned long local_ttl; | |
fd9fa481 | 413 | struct hostsfile *addn_hosts; |
3be34541 SK |
414 | struct dhcp_context *dhcp; |
415 | struct dhcp_config *dhcp_conf; | |
91dccd09 | 416 | struct dhcp_opt *dhcp_opts, *vendor_opts; |
3be34541 | 417 | struct dhcp_vendor *dhcp_vendors; |
26128d27 SK |
418 | struct dhcp_boot *boot_config; |
419 | struct dhcp_netid_list *dhcp_ignore; | |
3be34541 SK |
420 | int dhcp_max; |
421 | unsigned int min_leasetime; | |
422 | struct doctor *doctors; | |
423 | unsigned short edns_pktsz; | |
424 | ||
425 | /* globally used stuff for DNS */ | |
426 | char *packet; /* packet buffer */ | |
0a852541 | 427 | int packet_buff_sz; /* size of above */ |
3be34541 SK |
428 | char *namebuff; /* MAXDNAME size buffer */ |
429 | struct serverfd *sfds; | |
3d8df260 | 430 | struct irec *interfaces; |
3be34541 SK |
431 | struct listener *listeners; |
432 | struct server *last_server; | |
433 | int uptime_fd; | |
434 | ||
435 | /* DHCP state */ | |
436 | int dhcpfd, dhcp_raw_fd, dhcp_icmp_fd, lease_fd; | |
0a852541 SK |
437 | #ifdef HAVE_RTNETLINK |
438 | int netlinkfd; | |
439 | #endif | |
3be34541 SK |
440 | struct udp_dhcp_packet *dhcp_packet; |
441 | char *dhcp_buff, *dhcp_buff2; | |
3d8df260 SK |
442 | struct ping_result *ping_results; |
443 | ||
444 | /* DBus stuff */ | |
445 | #ifdef HAVE_DBUS | |
446 | /* void * here to avoid depending on dbus headers outside dbus.c */ | |
447 | void *dbus; | |
448 | struct watch *watches; | |
449 | #endif | |
450 | ||
3be34541 SK |
451 | }; |
452 | ||
9e4abcb5 SK |
453 | /* cache.c */ |
454 | void cache_init(int cachesize, int log); | |
fd9fa481 SK |
455 | void log_query(unsigned short flags, char *name, struct all_addr *addr, |
456 | unsigned short type, struct hostsfile *addn_hosts, int index); | |
9e4abcb5 SK |
457 | struct crec *cache_find_by_addr(struct crec *crecp, |
458 | struct all_addr *addr, time_t now, | |
459 | unsigned short prot); | |
460 | struct crec *cache_find_by_name(struct crec *crecp, | |
461 | char *name, time_t now, unsigned short prot); | |
462 | void cache_end_insert(void); | |
463 | void cache_start_insert(void); | |
fd9fa481 SK |
464 | struct crec *cache_insert(char *name, struct all_addr *addr, |
465 | time_t now, unsigned long ttl, unsigned short flags); | |
466 | void cache_reload(int opts, char *buff, char *domain_suffix, struct hostsfile *addn_hosts); | |
467 | void cache_add_dhcp_entry(struct daemon *daemon, char *host_name, struct in_addr *host_address, time_t ttd); | |
9e4abcb5 | 468 | void cache_unhash_dhcp(void); |
fd9fa481 | 469 | void dump_cache(struct daemon *daemon); |
9e4abcb5 SK |
470 | char *cache_get_name(struct crec *crecp); |
471 | ||
472 | /* rfc1035.c */ | |
c1bb8504 SK |
473 | unsigned short extract_request(HEADER *header, unsigned int qlen, |
474 | char *name, unsigned short *typep); | |
9e4abcb5 SK |
475 | int setup_reply(HEADER *header, unsigned int qlen, |
476 | struct all_addr *addrp, unsigned short flags, | |
477 | unsigned long local_ttl); | |
1cff166d | 478 | void extract_addresses(HEADER *header, unsigned int qlen, char *namebuff, |
fd9fa481 | 479 | time_t now, struct daemon *daemon); |
f6b7dc47 SK |
480 | int answer_request(HEADER *header, char *limit, unsigned int qlen, struct daemon *daemon, |
481 | struct in_addr local_addr, struct in_addr local_netmask, time_t now); | |
9e4abcb5 SK |
482 | int check_for_bogus_wildcard(HEADER *header, unsigned int qlen, char *name, |
483 | struct bogus_addr *addr, time_t now); | |
36717eee SK |
484 | unsigned char *find_pseudoheader(HEADER *header, unsigned int plen, |
485 | unsigned int *len, unsigned char **p); | |
f6b7dc47 | 486 | int check_for_local_domain(char *name, time_t now, struct daemon *daemon); |
0a852541 | 487 | unsigned int questions_crc(HEADER *header, unsigned int plen, char *buff); |
36717eee SK |
488 | int resize_packet(HEADER *header, unsigned int plen, |
489 | unsigned char *pheader, unsigned int hlen); | |
9e4abcb5 SK |
490 | |
491 | /* util.c */ | |
492 | unsigned short rand16(void); | |
493 | int legal_char(char c); | |
494 | int canonicalise(char *s); | |
3d8df260 | 495 | unsigned char *do_rfc1035_name(unsigned char *p, char *sval); |
9e4abcb5 | 496 | void die(char *message, char *arg1); |
0a852541 SK |
497 | void complain(char *message, int lineno, char *file); |
498 | void *safe_malloc(size_t size); | |
9e4abcb5 SK |
499 | int sa_len(union mysockaddr *addr); |
500 | int sockaddr_isequal(union mysockaddr *s1, union mysockaddr *s2); | |
3d8df260 | 501 | int hostname_isequal(char *a, char *b); |
44a2a316 | 502 | time_t dnsmasq_time(int fd); |
a84fa1d0 | 503 | int is_same_net(struct in_addr a, struct in_addr b, struct in_addr mask); |
fd9fa481 | 504 | int retry_send(void); |
0a852541 | 505 | void prettyprint_time(char *buf, unsigned int t); |
3d8df260 | 506 | int prettyprint_addr(union mysockaddr *addr, char *buf); |
0a852541 SK |
507 | int parse_hex(char *in, unsigned char *out, int maxlen, |
508 | unsigned int *wildcard_mask); | |
a84fa1d0 | 509 | |
9e4abcb5 | 510 | /* option.c */ |
3d8df260 | 511 | struct daemon *read_opts (int argc, char **argv, char *compile_opts); |
9e4abcb5 SK |
512 | |
513 | /* forward.c */ | |
514 | void forward_init(int first); | |
3be34541 SK |
515 | void reply_query(struct serverfd *sfd, struct daemon *daemon, time_t now); |
516 | void receive_query(struct listener *listen, struct daemon *daemon, time_t now); | |
3d8df260 SK |
517 | unsigned char *tcp_request(struct daemon *daemon, int confd, time_t now, |
518 | struct in_addr local_addr, struct in_addr netmask); | |
3be34541 | 519 | |
9e4abcb5 | 520 | /* network.c */ |
feba5c1d | 521 | struct serverfd *allocate_sfd(union mysockaddr *addr, struct serverfd **sfds); |
3be34541 | 522 | void reload_servers(char *fname, struct daemon *daemon); |
3d8df260 | 523 | void check_servers(struct daemon *daemon); |
f6b7dc47 SK |
524 | int enumerate_interfaces(struct daemon *daemon, struct irec **chainp, |
525 | union mysockaddr *test_addrp, struct in_addr *netmaskp); | |
44a2a316 | 526 | struct listener *create_wildcard_listeners(int port); |
feba5c1d | 527 | struct listener *create_bound_listeners(struct irec *interfaces, int port); |
3be34541 | 528 | |
9e4abcb5 | 529 | /* dhcp.c */ |
3be34541 SK |
530 | void dhcp_init(struct daemon *daemon); |
531 | void dhcp_packet(struct daemon *daemon, time_t now); | |
532 | ||
59353a6b SK |
533 | struct dhcp_context *address_available(struct dhcp_context *context, struct in_addr addr); |
534 | struct dhcp_context *narrow_context(struct dhcp_context *context, struct in_addr taddr); | |
f6b7dc47 | 535 | int match_netid(struct dhcp_netid *check, struct dhcp_netid *pool); |
3be34541 | 536 | int address_allocate(struct dhcp_context *context, struct daemon *daemon, |
f6b7dc47 | 537 | struct in_addr *addrp, unsigned char *hwaddr, |
3d8df260 | 538 | struct dhcp_netid *netids, time_t now); |
9e4abcb5 SK |
539 | struct dhcp_config *find_config(struct dhcp_config *configs, |
540 | struct dhcp_context *context, | |
541 | unsigned char *clid, int clid_len, | |
542 | unsigned char *hwaddr, char *hostname); | |
44a2a316 | 543 | void dhcp_update_configs(struct dhcp_config *configs); |
3be34541 | 544 | void dhcp_read_ethers(struct daemon *daemon); |
dfa666f2 | 545 | struct dhcp_config *config_find_by_address(struct dhcp_config *configs, struct in_addr addr); |
bb01cb96 SK |
546 | char *strip_hostname(struct daemon *daemon, char *hostname); |
547 | char *host_from_dns(struct daemon *daemon, struct in_addr addr); | |
0a852541 SK |
548 | struct dhcp_context *complete_context(struct daemon *daemon, struct in_addr local, |
549 | struct dhcp_context *current, struct in_addr netmask, | |
550 | struct in_addr broadcast, struct in_addr relay, | |
551 | struct in_addr primary); | |
3be34541 | 552 | |
9e4abcb5 | 553 | /* lease.c */ |
44a2a316 | 554 | void lease_update_file(int force, time_t now); |
fd9fa481 | 555 | void lease_update_dns(struct daemon *daemon); |
3be34541 | 556 | void lease_init(struct daemon *daemon, time_t now); |
0a852541 SK |
557 | struct dhcp_lease *lease_allocate(unsigned char *hwaddr, unsigned char *clid, |
558 | int clid_len, struct in_addr addr); | |
559 | int lease_set_hwaddr(struct dhcp_lease *lease, unsigned char *hwaddr, | |
560 | unsigned char *clid, int clid_len); | |
9e4abcb5 SK |
561 | void lease_set_hostname(struct dhcp_lease *lease, char *name, char *suffix); |
562 | void lease_set_expires(struct dhcp_lease *lease, time_t exp); | |
0a852541 SK |
563 | struct dhcp_lease *lease_find_by_client(unsigned char *hwaddr, |
564 | unsigned char *clid, int clid_len); | |
9e4abcb5 SK |
565 | struct dhcp_lease *lease_find_by_addr(struct in_addr addr); |
566 | void lease_prune(struct dhcp_lease *target, time_t now); | |
44a2a316 | 567 | void lease_update_from_configs(struct dhcp_config *dhcp_configs, char *domain); |
a84fa1d0 | 568 | |
9e4abcb5 | 569 | /* rfc2131.c */ |
0a852541 | 570 | int dhcp_reply(struct daemon *daemon, struct dhcp_context *context, char *iface_name, unsigned int sz, time_t now); |
3be34541 SK |
571 | |
572 | /* dnsmasq.c */ | |
573 | int icmp_ping(struct daemon *daemon, struct in_addr addr); | |
3d8df260 | 574 | void clear_cache_and_reload(struct daemon *daemon, time_t now); |
44a2a316 | 575 | |
33820b7e SK |
576 | /* isc.c */ |
577 | #ifdef HAVE_ISC_READER | |
fd9fa481 | 578 | void load_dhcp(struct daemon *daemon, time_t now); |
33820b7e | 579 | #endif |
feba5c1d | 580 | |
0a852541 SK |
581 | /* netlink.c */ |
582 | #ifdef HAVE_RTNETLINK | |
583 | int netlink_init(void); | |
584 | int netlink_process(struct daemon *daemon, int index, | |
585 | struct in_addr relay, struct in_addr primary, | |
586 | struct dhcp_context **retp); | |
587 | #endif | |
3d8df260 SK |
588 | |
589 | /* dbus.c */ | |
590 | #ifdef HAVE_DBUS | |
591 | char *dbus_init(struct daemon *daemon); | |
592 | void check_dbus_listeners(struct daemon *daemon, | |
593 | fd_set *rset, fd_set *wset, fd_set *eset); | |
594 | int set_dbus_listeners(struct daemon *daemon, int maxfd, | |
595 | fd_set *rset, fd_set *wset, fd_set *eset); | |
596 | #endif |