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1b7ecd11 | 1 | /* dnsmasq is Copyright (c) 2000-2007 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 | ||
1b7ecd11 | 13 | #define COPYRIGHT "Copyright (C) 2000-2007 Simon Kelley" |
9e4abcb5 | 14 | |
9e4abcb5 | 15 | /* get these before config.h for IPv6 stuff... */ |
44a2a316 | 16 | #include <sys/types.h> |
9e4abcb5 SK |
17 | #include <netinet/in.h> |
18 | ||
f6b7dc47 SK |
19 | #ifdef __APPLE__ |
20 | /* need this before arpa/nameser.h */ | |
21 | # define BIND_8_COMPAT | |
22 | #endif | |
3be34541 | 23 | #include <arpa/nameser.h> |
9e4abcb5 | 24 | |
59353a6b SK |
25 | /* and this. */ |
26 | #include <getopt.h> | |
27 | ||
9e4abcb5 | 28 | #include "config.h" |
b8187c80 SK |
29 | |
30 | #define gettext_noop(S) (S) | |
31 | #ifdef NO_GETTEXT | |
32 | # define _(S) (S) | |
33 | #else | |
34 | # include <libintl.h> | |
35 | # include <locale.h> | |
36 | # define _(S) gettext(S) | |
37 | #endif | |
38 | ||
9e4abcb5 SK |
39 | #include <arpa/inet.h> |
40 | #include <sys/stat.h> | |
41 | #include <sys/socket.h> | |
9e4abcb5 SK |
42 | #include <sys/ioctl.h> |
43 | #include <sys/select.h> | |
feba5c1d | 44 | #include <sys/wait.h> |
9e4abcb5 | 45 | #include <sys/time.h> |
8a911ccc | 46 | #include <limits.h> |
9e4abcb5 SK |
47 | #include <net/if.h> |
48 | #include <unistd.h> | |
49 | #include <stdio.h> | |
50 | #include <string.h> | |
51 | #include <stdlib.h> | |
52 | #include <fcntl.h> | |
53 | #include <ctype.h> | |
54 | #include <signal.h> | |
9e4abcb5 SK |
55 | #include <time.h> |
56 | #include <errno.h> | |
57 | #include <pwd.h> | |
58 | #include <grp.h> | |
f6b7dc47 | 59 | #include <stdarg.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> |
5e9e0efb | 69 | #include <sys/uio.h> |
849a8357 SK |
70 | #include <syslog.h> |
71 | #include <dirent.h> | |
5e9e0efb | 72 | #ifndef HAVE_LINUX_NETWORK |
44a2a316 | 73 | # include <net/if_dl.h> |
9e4abcb5 | 74 | #endif |
5e9e0efb SK |
75 | |
76 | #ifdef HAVE_LINUX_NETWORK | |
77 | #include <linux/capability.h> | |
78 | /* There doesn't seem to be a universally-available | |
79 | userpace header for this. */ | |
80 | extern int capset(cap_user_header_t header, cap_user_data_t data); | |
81 | #include <sys/prctl.h> | |
82 | #endif | |
9e4abcb5 | 83 | |
0a852541 SK |
84 | /* Min buffer size: we check after adding each record, so there must be |
85 | memory for the largest packet, and the largest record so the | |
86 | min for DNS is PACKETSZ+MAXDNAME+RRFIXEDSZ which is < 1000. | |
87 | This might be increased is EDNS packet size if greater than the minimum. | |
cdeda28f SK |
88 | */ |
89 | #define DNSMASQ_PACKETSZ PACKETSZ+MAXDNAME+RRFIXEDSZ | |
44a2a316 | 90 | |
832af0ba SK |
91 | #define OPT_BOGUSPRIV (1<<0) |
92 | #define OPT_FILTER (1<<1) | |
93 | #define OPT_LOG (1<<2) | |
94 | #define OPT_SELFMX (1<<3) | |
95 | #define OPT_NO_HOSTS (1<<4) | |
96 | #define OPT_NO_POLL (1<<5) | |
97 | #define OPT_DEBUG (1<<6) | |
98 | #define OPT_ORDER (1<<7) | |
99 | #define OPT_NO_RESOLV (1<<8) | |
100 | #define OPT_EXPAND (1<<9) | |
101 | #define OPT_LOCALMX (1<<10) | |
102 | #define OPT_NO_NEG (1<<11) | |
103 | #define OPT_NODOTS_LOCAL (1<<12) | |
104 | #define OPT_NOWILD (1<<13) | |
105 | #define OPT_ETHERS (1<<14) | |
106 | #define OPT_RESOLV_DOMAIN (1<<15) | |
107 | #define OPT_NO_FORK (1<<16) | |
108 | #define OPT_AUTHORITATIVE (1<<17) | |
109 | #define OPT_LOCALISE (1<<18) | |
110 | #define OPT_DBUS (1<<19) | |
111 | #define OPT_BOOTP_DYNAMIC (1<<20) | |
112 | #define OPT_NO_PING (1<<21) | |
113 | #define OPT_LEASE_RO (1<<22) | |
114 | #define OPT_RELOAD (1<<24) | |
115 | #define OPT_TFTP (1<<25) | |
116 | #define OPT_TFTP_SECURE (1<<26) | |
6b01084f | 117 | #define OPT_TFTP_NOBLOCK (1<<27) |
9e4abcb5 SK |
118 | |
119 | struct all_addr { | |
120 | union { | |
121 | struct in_addr addr4; | |
122 | #ifdef HAVE_IPV6 | |
123 | struct in6_addr addr6; | |
124 | #endif | |
125 | } addr; | |
126 | }; | |
127 | ||
128 | struct bogus_addr { | |
129 | struct in_addr addr; | |
130 | struct bogus_addr *next; | |
131 | }; | |
132 | ||
1cff166d SK |
133 | /* dns doctor param */ |
134 | struct doctor { | |
135 | struct in_addr in, out, mask; | |
136 | struct doctor *next; | |
137 | }; | |
138 | ||
0a852541 SK |
139 | struct mx_srv_record { |
140 | char *name, *target; | |
3d8df260 SK |
141 | int issrv, srvport, priority, weight; |
142 | unsigned int offset; | |
0a852541 | 143 | struct mx_srv_record *next; |
de37951c SK |
144 | }; |
145 | ||
0a852541 SK |
146 | struct txt_record { |
147 | char *name, *txt; | |
148 | unsigned short class, len; | |
149 | struct txt_record *next; | |
f6b7dc47 SK |
150 | }; |
151 | ||
832af0ba SK |
152 | struct ptr_record { |
153 | char *name, *ptr; | |
154 | struct ptr_record *next; | |
155 | }; | |
156 | ||
9e4abcb5 SK |
157 | union bigname { |
158 | char name[MAXDNAME]; | |
159 | union bigname *next; /* freelist */ | |
160 | }; | |
161 | ||
162 | struct crec { | |
163 | struct crec *next, *prev, *hash_next; | |
164 | time_t ttd; /* time to die */ | |
fd9fa481 SK |
165 | int uid; |
166 | union { | |
167 | struct all_addr addr; | |
168 | struct { | |
169 | struct crec *cache; | |
170 | int uid; | |
171 | } cname; | |
172 | } addr; | |
9e4abcb5 SK |
173 | unsigned short flags; |
174 | union { | |
175 | char sname[SMALLDNAME]; | |
176 | union bigname *bname; | |
177 | char *namep; | |
178 | } name; | |
179 | }; | |
180 | ||
181 | #define F_IMMORTAL 1 | |
fd9fa481 | 182 | #define F_CONFIG 2 |
9e4abcb5 SK |
183 | #define F_REVERSE 4 |
184 | #define F_FORWARD 8 | |
185 | #define F_DHCP 16 | |
186 | #define F_NEG 32 | |
187 | #define F_HOSTS 64 | |
188 | #define F_IPV4 128 | |
189 | #define F_IPV6 256 | |
190 | #define F_BIGNAME 512 | |
191 | #define F_UPSTREAM 1024 | |
192 | #define F_SERVER 2048 | |
193 | #define F_NXDOMAIN 4096 | |
194 | #define F_QUERY 8192 | |
fd9fa481 | 195 | #define F_CNAME 16384 |
9e4abcb5 SK |
196 | #define F_NOERR 32768 |
197 | ||
198 | /* struct sockaddr is not large enough to hold any address, | |
cdeda28f | 199 | and specifically not big enough to hold an IPv6 address. |
9e4abcb5 SK |
200 | Blech. Roll our own. */ |
201 | union mysockaddr { | |
202 | struct sockaddr sa; | |
203 | struct sockaddr_in in; | |
204 | #ifdef HAVE_BROKEN_SOCKADDR_IN6 | |
205 | /* early versions of glibc don't include sin6_scope_id in sockaddr_in6 | |
206 | but latest kernels _require_ it to be set. The choice is to have | |
207 | dnsmasq fail to compile on back-level libc or fail to run | |
208 | on latest kernels with IPv6. Or to do this: sorry that it's so gross. */ | |
209 | struct my_sockaddr_in6 { | |
210 | sa_family_t sin6_family; /* AF_INET6 */ | |
211 | uint16_t sin6_port; /* transport layer port # */ | |
212 | uint32_t sin6_flowinfo; /* IPv6 traffic class & flow info */ | |
213 | struct in6_addr sin6_addr; /* IPv6 address */ | |
214 | uint32_t sin6_scope_id; /* set of interfaces for a scope */ | |
215 | } in6; | |
216 | #elif defined(HAVE_IPV6) | |
217 | struct sockaddr_in6 in6; | |
218 | #endif | |
219 | }; | |
220 | ||
0a852541 SK |
221 | #define SERV_FROM_RESOLV 1 /* 1 for servers from resolv, 0 for command line. */ |
222 | #define SERV_NO_ADDR 2 /* no server, this domain is local only */ | |
223 | #define SERV_LITERAL_ADDRESS 4 /* addr is the answer, not the server */ | |
224 | #define SERV_HAS_SOURCE 8 /* source address specified */ | |
225 | #define SERV_HAS_DOMAIN 16 /* server for one domain only */ | |
226 | #define SERV_FOR_NODOTS 32 /* server for names with no domain part only */ | |
227 | #define SERV_WARNED_RECURSIVE 64 /* avoid warning spam */ | |
3d8df260 SK |
228 | #define SERV_FROM_DBUS 128 /* 1 if source is DBus */ |
229 | #define SERV_MARK 256 /* for mark-and-delete */ | |
9e4abcb5 SK |
230 | #define SERV_TYPE (SERV_HAS_DOMAIN | SERV_FOR_NODOTS) |
231 | ||
0a852541 | 232 | |
9e4abcb5 SK |
233 | struct serverfd { |
234 | int fd; | |
235 | union mysockaddr source_addr; | |
236 | struct serverfd *next; | |
237 | }; | |
238 | ||
239 | struct server { | |
240 | union mysockaddr addr, source_addr; | |
1697269c | 241 | struct serverfd *sfd; |
9e4abcb5 | 242 | char *domain; /* set if this server only handles a domain. */ |
feba5c1d | 243 | int flags, tcpfd; |
9e4abcb5 SK |
244 | struct server *next; |
245 | }; | |
246 | ||
9e4abcb5 SK |
247 | struct irec { |
248 | union mysockaddr addr; | |
f6b7dc47 | 249 | struct in_addr netmask; /* only valid for IPv4 */ |
832af0ba | 250 | int dhcp_ok; |
9e4abcb5 SK |
251 | struct irec *next; |
252 | }; | |
253 | ||
44a2a316 | 254 | struct listener { |
832af0ba | 255 | int fd, tcpfd, tftpfd, family; |
f6b7dc47 | 256 | struct irec *iface; /* only valid for non-wildcard */ |
44a2a316 SK |
257 | struct listener *next; |
258 | }; | |
259 | ||
9e4abcb5 SK |
260 | /* interface and address parms from command line. */ |
261 | struct iname { | |
262 | char *name; | |
263 | union mysockaddr addr; | |
de37951c | 264 | int isloop, used; |
9e4abcb5 SK |
265 | struct iname *next; |
266 | }; | |
267 | ||
268 | /* resolv-file parms from command-line */ | |
269 | struct resolvc { | |
270 | struct resolvc *next; | |
3d8df260 SK |
271 | int is_default, logged; |
272 | time_t mtime; | |
9e4abcb5 SK |
273 | char *name; |
274 | }; | |
275 | ||
fd9fa481 SK |
276 | /* adn-hosts parms from command-line */ |
277 | struct hostsfile { | |
278 | struct hostsfile *next; | |
279 | char *fname; | |
cdeda28f | 280 | int index; /* matches to cache entries for logging */ |
fd9fa481 SK |
281 | }; |
282 | ||
9e4abcb5 SK |
283 | struct frec { |
284 | union mysockaddr source; | |
44a2a316 | 285 | struct all_addr dest; |
832af0ba | 286 | struct server *sentto; /* NULL means free */ |
dfa666f2 | 287 | unsigned int iface; |
9e4abcb5 | 288 | unsigned short orig_id, new_id; |
0a852541 | 289 | int fd, forwardall; |
fd9fa481 | 290 | unsigned int crc; |
9e4abcb5 SK |
291 | time_t time; |
292 | struct frec *next; | |
293 | }; | |
294 | ||
1697269c SK |
295 | /* actions in the daemon->helper RPC */ |
296 | #define ACTION_DEL 1 | |
297 | #define ACTION_OLD_HOSTNAME 2 | |
298 | #define ACTION_OLD 3 | |
299 | #define ACTION_ADD 4 | |
300 | ||
cdeda28f SK |
301 | #define DHCP_CHADDR_MAX 16 |
302 | ||
9e4abcb5 SK |
303 | struct dhcp_lease { |
304 | int clid_len; /* length of client identifier */ | |
305 | unsigned char *clid; /* clientid */ | |
306 | char *hostname, *fqdn; /* name from client-hostname option or config */ | |
1697269c | 307 | char *old_hostname; /* hostname before it moved to another lease */ |
7cebd20f SK |
308 | char auth_name; /* hostname came from config, not from client */ |
309 | char new; /* newly created */ | |
208b65c5 SK |
310 | char changed; /* modified */ |
311 | char aux_changed; /* CLID or expiry changed */ | |
9e4abcb5 | 312 | time_t expires; /* lease expiry */ |
5e9e0efb SK |
313 | #ifdef HAVE_BROKEN_RTC |
314 | unsigned int length; | |
315 | #endif | |
cdeda28f SK |
316 | int hwaddr_len, hwaddr_type; |
317 | unsigned char hwaddr[DHCP_CHADDR_MAX]; | |
9e4abcb5 | 318 | struct in_addr addr; |
1697269c SK |
319 | unsigned char *vendorclass, *userclass; |
320 | unsigned int vendorclass_len, userclass_len; | |
9e4abcb5 SK |
321 | struct dhcp_lease *next; |
322 | }; | |
323 | ||
a222641c SK |
324 | struct dhcp_netid { |
325 | char *net; | |
326 | struct dhcp_netid *next; | |
327 | }; | |
328 | ||
26128d27 SK |
329 | struct dhcp_netid_list { |
330 | struct dhcp_netid *list; | |
331 | struct dhcp_netid_list *next; | |
332 | }; | |
1697269c | 333 | |
9e4abcb5 | 334 | struct dhcp_config { |
33820b7e | 335 | unsigned int flags; |
9e4abcb5 SK |
336 | int clid_len; /* length of client identifier */ |
337 | unsigned char *clid; /* clientid */ | |
cdeda28f SK |
338 | int hwaddr_len, hwaddr_type; |
339 | unsigned char hwaddr[DHCP_CHADDR_MAX]; | |
a222641c SK |
340 | char *hostname; |
341 | struct dhcp_netid netid; | |
9e4abcb5 | 342 | struct in_addr addr; |
849a8357 | 343 | time_t decline_time; |
0a852541 | 344 | unsigned int lease_time, wildcard_mask; |
9e4abcb5 SK |
345 | struct dhcp_config *next; |
346 | }; | |
347 | ||
0a852541 SK |
348 | #define CONFIG_DISABLE 1 |
349 | #define CONFIG_CLID 2 | |
350 | #define CONFIG_HWADDR 4 | |
351 | #define CONFIG_TIME 8 | |
352 | #define CONFIG_NAME 16 | |
353 | #define CONFIG_ADDR 32 | |
354 | #define CONFIG_NETID 64 | |
355 | #define CONFIG_NOCLID 128 | |
849a8357 SK |
356 | #define CONFIG_FROM_ETHERS 256 /* entry created by /etc/ethers */ |
357 | #define CONFIG_ADDR_HOSTS 512 /* address added by from /etc/hosts */ | |
358 | #define CONFIG_DECLINED 1024 /* address declined by client */ | |
33820b7e | 359 | |
9e4abcb5 | 360 | struct dhcp_opt { |
cdeda28f | 361 | int opt, len, flags; |
91dccd09 | 362 | unsigned char *val, *vendor_class; |
26128d27 | 363 | struct dhcp_netid *netid; |
9e4abcb5 | 364 | struct dhcp_opt *next; |
a84fa1d0 SK |
365 | }; |
366 | ||
cdeda28f SK |
367 | #define DHOPT_ADDR 1 |
368 | #define DHOPT_STRING 2 | |
6b01084f SK |
369 | #define DHOPT_ENCAPSULATE 4 |
370 | #define DHOPT_VENDOR_MATCH 8 | |
371 | #define DHOPT_FORCE 16 | |
cdeda28f | 372 | |
26128d27 SK |
373 | struct dhcp_boot { |
374 | char *file, *sname; | |
375 | struct in_addr next_server; | |
376 | struct dhcp_netid *netid; | |
377 | struct dhcp_boot *next; | |
378 | }; | |
379 | ||
a84fa1d0 | 380 | struct dhcp_vendor { |
26128d27 | 381 | int len, is_vendor; |
a222641c SK |
382 | char *data; |
383 | struct dhcp_netid netid; | |
a84fa1d0 SK |
384 | struct dhcp_vendor *next; |
385 | }; | |
9e4abcb5 | 386 | |
cdeda28f SK |
387 | struct dhcp_mac { |
388 | unsigned int mask; | |
389 | int hwaddr_len, hwaddr_type; | |
390 | unsigned char hwaddr[DHCP_CHADDR_MAX]; | |
391 | struct dhcp_netid netid; | |
392 | struct dhcp_mac *next; | |
393 | }; | |
394 | ||
832af0ba SK |
395 | #if defined(__FreeBSD__) || defined(__DragonFly__) |
396 | struct dhcp_bridge { | |
397 | char iface[IF_NAMESIZE]; | |
398 | struct dhcp_bridge *alias, *next; | |
399 | }; | |
400 | #endif | |
401 | ||
9e4abcb5 | 402 | struct dhcp_context { |
feba5c1d | 403 | unsigned int lease_time, addr_epoch; |
0a852541 SK |
404 | struct in_addr netmask, broadcast; |
405 | struct in_addr local, router; | |
a84fa1d0 | 406 | struct in_addr start, end; /* range of available addresses */ |
0a852541 | 407 | int flags; |
cdeda28f | 408 | struct dhcp_netid netid, *filter; |
36717eee | 409 | struct dhcp_context *next, *current; |
9e4abcb5 SK |
410 | }; |
411 | ||
0a852541 | 412 | #define CONTEXT_STATIC 1 |
cdeda28f SK |
413 | #define CONTEXT_NETMASK 2 |
414 | #define CONTEXT_BRDCAST 4 | |
0a852541 SK |
415 | |
416 | ||
9e4abcb5 SK |
417 | typedef unsigned char u8; |
418 | typedef unsigned short u16; | |
419 | typedef unsigned int u32; | |
420 | ||
421 | ||
5e9e0efb SK |
422 | struct dhcp_packet { |
423 | u8 op, htype, hlen, hops; | |
424 | u32 xid; | |
425 | u16 secs, flags; | |
426 | struct in_addr ciaddr, yiaddr, siaddr, giaddr; | |
427 | u8 chaddr[DHCP_CHADDR_MAX], sname[64], file[128]; | |
428 | u8 options[312]; | |
9e4abcb5 SK |
429 | }; |
430 | ||
3d8df260 SK |
431 | struct ping_result { |
432 | struct in_addr addr; | |
433 | time_t time; | |
434 | struct ping_result *next; | |
435 | }; | |
9e4abcb5 | 436 | |
832af0ba SK |
437 | struct tftp_file { |
438 | int refcount, fd; | |
439 | off_t size; | |
440 | char filename[]; | |
441 | }; | |
442 | ||
443 | struct tftp_transfer { | |
444 | int sockfd; | |
445 | time_t timeout; | |
446 | int backoff; | |
447 | unsigned int block, blocksize; | |
448 | struct sockaddr_in peer; | |
449 | char opt_blocksize, opt_transize; | |
450 | struct tftp_file *file; | |
451 | struct tftp_transfer *next; | |
452 | }; | |
453 | ||
3be34541 SK |
454 | struct daemon { |
455 | /* datastuctures representing the command-line and | |
456 | config file arguments. All set (including defaults) | |
457 | in option.c */ | |
458 | ||
459 | unsigned int options; | |
460 | struct resolvc default_resolv, *resolv_files; | |
0a852541 SK |
461 | struct mx_srv_record *mxnames; |
462 | struct txt_record *txt; | |
832af0ba | 463 | struct ptr_record *ptr; |
3be34541 SK |
464 | char *mxtarget; |
465 | char *lease_file; | |
466 | char *username, *groupname; | |
467 | char *domain_suffix; | |
468 | char *runfile; | |
7cebd20f | 469 | char *lease_change_command; |
3d8df260 | 470 | struct iname *if_names, *if_addrs, *if_except, *dhcp_except; |
3be34541 SK |
471 | struct bogus_addr *bogus_addr; |
472 | struct server *servers; | |
849a8357 | 473 | int log_fac; /* log facility */ |
208b65c5 | 474 | int cachesize, ftabsize; |
3be34541 SK |
475 | int port, query_port; |
476 | unsigned long local_ttl; | |
fd9fa481 | 477 | struct hostsfile *addn_hosts; |
3be34541 SK |
478 | struct dhcp_context *dhcp; |
479 | struct dhcp_config *dhcp_conf; | |
6b01084f | 480 | struct dhcp_opt *dhcp_opts; |
3be34541 | 481 | struct dhcp_vendor *dhcp_vendors; |
cdeda28f | 482 | struct dhcp_mac *dhcp_macs; |
26128d27 | 483 | struct dhcp_boot *boot_config; |
832af0ba SK |
484 | struct dhcp_netid_list *dhcp_ignore, *dhcp_ignore_names; |
485 | int dhcp_max, tftp_max; | |
3be34541 SK |
486 | unsigned int min_leasetime; |
487 | struct doctor *doctors; | |
488 | unsigned short edns_pktsz; | |
489 | ||
490 | /* globally used stuff for DNS */ | |
491 | char *packet; /* packet buffer */ | |
0a852541 | 492 | int packet_buff_sz; /* size of above */ |
3be34541 SK |
493 | char *namebuff; /* MAXDNAME size buffer */ |
494 | struct serverfd *sfds; | |
3d8df260 | 495 | struct irec *interfaces; |
3be34541 SK |
496 | struct listener *listeners; |
497 | struct server *last_server; | |
cdeda28f SK |
498 | struct server *srv_save; /* Used for resend on DoD */ |
499 | size_t packet_len; /* " " */ | |
1697269c SK |
500 | pid_t tcp_pids[MAX_PROCS]; |
501 | ||
3be34541 | 502 | /* DHCP state */ |
1697269c | 503 | int dhcpfd, helperfd; |
5e9e0efb | 504 | #ifdef HAVE_LINUX_NETWORK |
0a852541 | 505 | int netlinkfd; |
5e9e0efb SK |
506 | #else |
507 | int dhcp_raw_fd, dhcp_icmp_fd; | |
0a852541 | 508 | #endif |
5e9e0efb | 509 | struct iovec dhcp_packet; |
3be34541 | 510 | char *dhcp_buff, *dhcp_buff2; |
3d8df260 | 511 | struct ping_result *ping_results; |
cdeda28f | 512 | FILE *lease_stream; |
832af0ba SK |
513 | #if defined(__FreeBSD__) || defined(__DragonFly__) |
514 | struct dhcp_bridge *bridges; | |
515 | #endif | |
3d8df260 SK |
516 | |
517 | /* DBus stuff */ | |
3d8df260 SK |
518 | /* void * here to avoid depending on dbus headers outside dbus.c */ |
519 | void *dbus; | |
832af0ba | 520 | #ifdef HAVE_DBUS |
3d8df260 SK |
521 | struct watch *watches; |
522 | #endif | |
523 | ||
832af0ba SK |
524 | /* TFTP stuff */ |
525 | struct tftp_transfer *tftp_trans; | |
526 | char *tftp_prefix; | |
3be34541 SK |
527 | }; |
528 | ||
9e4abcb5 SK |
529 | /* cache.c */ |
530 | void cache_init(int cachesize, int log); | |
fd9fa481 SK |
531 | void log_query(unsigned short flags, char *name, struct all_addr *addr, |
532 | unsigned short type, struct hostsfile *addn_hosts, int index); | |
9e4abcb5 SK |
533 | struct crec *cache_find_by_addr(struct crec *crecp, |
534 | struct all_addr *addr, time_t now, | |
535 | unsigned short prot); | |
536 | struct crec *cache_find_by_name(struct crec *crecp, | |
537 | char *name, time_t now, unsigned short prot); | |
538 | void cache_end_insert(void); | |
539 | void cache_start_insert(void); | |
fd9fa481 SK |
540 | struct crec *cache_insert(char *name, struct all_addr *addr, |
541 | time_t now, unsigned long ttl, unsigned short flags); | |
542 | void cache_reload(int opts, char *buff, char *domain_suffix, struct hostsfile *addn_hosts); | |
543 | void cache_add_dhcp_entry(struct daemon *daemon, char *host_name, struct in_addr *host_address, time_t ttd); | |
9e4abcb5 | 544 | void cache_unhash_dhcp(void); |
5e9e0efb | 545 | void dump_cache(struct daemon *daemon, time_t now); |
9e4abcb5 SK |
546 | char *cache_get_name(struct crec *crecp); |
547 | ||
548 | /* rfc1035.c */ | |
cdeda28f | 549 | unsigned short extract_request(HEADER *header, size_t qlen, |
c1bb8504 | 550 | char *name, unsigned short *typep); |
cdeda28f SK |
551 | size_t setup_reply(HEADER *header, size_t qlen, |
552 | struct all_addr *addrp, unsigned short flags, | |
553 | unsigned long local_ttl); | |
554 | void extract_addresses(HEADER *header, size_t qlen, char *namebuff, | |
fd9fa481 | 555 | time_t now, struct daemon *daemon); |
cdeda28f | 556 | size_t answer_request(HEADER *header, char *limit, size_t qlen, struct daemon *daemon, |
f6b7dc47 | 557 | struct in_addr local_addr, struct in_addr local_netmask, time_t now); |
cdeda28f | 558 | int check_for_bogus_wildcard(HEADER *header, size_t qlen, char *name, |
9e4abcb5 | 559 | struct bogus_addr *addr, time_t now); |
cdeda28f | 560 | unsigned char *find_pseudoheader(HEADER *header, size_t plen, |
832af0ba | 561 | size_t *len, unsigned char **p, int *is_sign); |
f6b7dc47 | 562 | int check_for_local_domain(char *name, time_t now, struct daemon *daemon); |
cdeda28f SK |
563 | unsigned int questions_crc(HEADER *header, size_t plen, char *buff); |
564 | size_t resize_packet(HEADER *header, size_t plen, | |
565 | unsigned char *pheader, size_t hlen); | |
9e4abcb5 SK |
566 | |
567 | /* util.c */ | |
568 | unsigned short rand16(void); | |
569 | int legal_char(char c); | |
570 | int canonicalise(char *s); | |
3d8df260 | 571 | unsigned char *do_rfc1035_name(unsigned char *p, char *sval); |
9e4abcb5 | 572 | void die(char *message, char *arg1); |
0a852541 SK |
573 | void complain(char *message, int lineno, char *file); |
574 | void *safe_malloc(size_t size); | |
9e4abcb5 SK |
575 | int sa_len(union mysockaddr *addr); |
576 | int sockaddr_isequal(union mysockaddr *s1, union mysockaddr *s2); | |
3d8df260 | 577 | int hostname_isequal(char *a, char *b); |
5e9e0efb | 578 | time_t dnsmasq_time(void); |
a84fa1d0 | 579 | int is_same_net(struct in_addr a, struct in_addr b, struct in_addr mask); |
fd9fa481 | 580 | int retry_send(void); |
0a852541 | 581 | void prettyprint_time(char *buf, unsigned int t); |
3d8df260 | 582 | int prettyprint_addr(union mysockaddr *addr, char *buf); |
0a852541 | 583 | int parse_hex(char *in, unsigned char *out, int maxlen, |
cdeda28f | 584 | unsigned int *wildcard_mask, int *mac_type); |
5e9e0efb SK |
585 | int memcmp_masked(unsigned char *a, unsigned char *b, int len, |
586 | unsigned int mask); | |
587 | int expand_buf(struct iovec *iov, size_t size); | |
7cebd20f | 588 | char *print_mac(struct daemon *daemon, unsigned char *mac, int len); |
1697269c SK |
589 | void bump_maxfd(int fd, int *max); |
590 | void log_start(struct daemon *daemon); | |
591 | int read_write(int fd, unsigned char *packet, int size, int rw); | |
7cebd20f | 592 | |
9e4abcb5 | 593 | /* option.c */ |
3d8df260 | 594 | struct daemon *read_opts (int argc, char **argv, char *compile_opts); |
9e4abcb5 SK |
595 | |
596 | /* forward.c */ | |
3be34541 SK |
597 | void reply_query(struct serverfd *sfd, struct daemon *daemon, time_t now); |
598 | void receive_query(struct listener *listen, struct daemon *daemon, time_t now); | |
3d8df260 SK |
599 | unsigned char *tcp_request(struct daemon *daemon, int confd, time_t now, |
600 | struct in_addr local_addr, struct in_addr netmask); | |
849a8357 | 601 | void server_gone(struct daemon *daemon, struct server *server); |
1697269c | 602 | struct frec *get_new_frec(struct daemon *daemon, time_t now, int *wait); |
3be34541 | 603 | |
9e4abcb5 | 604 | /* network.c */ |
feba5c1d | 605 | struct serverfd *allocate_sfd(union mysockaddr *addr, struct serverfd **sfds); |
849a8357 | 606 | int reload_servers(char *fname, struct daemon *daemon); |
3d8df260 | 607 | void check_servers(struct daemon *daemon); |
5e9e0efb | 608 | int enumerate_interfaces(struct daemon *daemon); |
832af0ba | 609 | struct listener *create_wildcard_listeners(int port, int have_tftp); |
5e9e0efb | 610 | struct listener *create_bound_listeners(struct daemon *daemon); |
832af0ba SK |
611 | int iface_check(struct daemon *daemon, int family, struct all_addr *addr, |
612 | struct ifreq *ifr, int *indexp); | |
7cebd20f | 613 | int fix_fd(int fd); |
3be34541 | 614 | |
9e4abcb5 | 615 | /* dhcp.c */ |
3be34541 SK |
616 | void dhcp_init(struct daemon *daemon); |
617 | void dhcp_packet(struct daemon *daemon, time_t now); | |
618 | ||
59353a6b SK |
619 | struct dhcp_context *address_available(struct dhcp_context *context, struct in_addr addr); |
620 | struct dhcp_context *narrow_context(struct dhcp_context *context, struct in_addr taddr); | |
cdeda28f | 621 | int match_netid(struct dhcp_netid *check, struct dhcp_netid *pool, int negonly); |
3be34541 | 622 | int address_allocate(struct dhcp_context *context, struct daemon *daemon, |
cdeda28f | 623 | struct in_addr *addrp, unsigned char *hwaddr, int hw_len, |
3d8df260 | 624 | struct dhcp_netid *netids, time_t now); |
9e4abcb5 SK |
625 | struct dhcp_config *find_config(struct dhcp_config *configs, |
626 | struct dhcp_context *context, | |
627 | unsigned char *clid, int clid_len, | |
cdeda28f SK |
628 | unsigned char *hwaddr, int hw_len, |
629 | int hw_type, char *hostname); | |
44a2a316 | 630 | void dhcp_update_configs(struct dhcp_config *configs); |
3be34541 | 631 | void dhcp_read_ethers(struct daemon *daemon); |
dfa666f2 | 632 | struct dhcp_config *config_find_by_address(struct dhcp_config *configs, struct in_addr addr); |
bb01cb96 SK |
633 | char *strip_hostname(struct daemon *daemon, char *hostname); |
634 | char *host_from_dns(struct daemon *daemon, struct in_addr addr); | |
3be34541 | 635 | |
9e4abcb5 | 636 | /* lease.c */ |
7cebd20f | 637 | void lease_update_file(struct daemon *daemon, time_t now); |
fd9fa481 | 638 | void lease_update_dns(struct daemon *daemon); |
3be34541 | 639 | void lease_init(struct daemon *daemon, time_t now); |
7cebd20f SK |
640 | struct dhcp_lease *lease_allocate(struct in_addr addr); |
641 | void lease_set_hwaddr(struct dhcp_lease *lease, unsigned char *hwaddr, | |
cdeda28f | 642 | unsigned char *clid, int hw_len, int hw_type, int clid_len); |
b8187c80 SK |
643 | void lease_set_hostname(struct dhcp_lease *lease, char *name, |
644 | char *suffix, int auth); | |
5e9e0efb | 645 | void lease_set_expires(struct dhcp_lease *lease, unsigned int len, time_t now); |
cdeda28f | 646 | struct dhcp_lease *lease_find_by_client(unsigned char *hwaddr, int hw_len, int hw_type, |
0a852541 | 647 | unsigned char *clid, int clid_len); |
9e4abcb5 SK |
648 | struct dhcp_lease *lease_find_by_addr(struct in_addr addr); |
649 | void lease_prune(struct dhcp_lease *target, time_t now); | |
b8187c80 | 650 | void lease_update_from_configs(struct daemon *daemon); |
1697269c | 651 | int do_script_run(struct daemon *daemon); |
a84fa1d0 | 652 | |
9e4abcb5 | 653 | /* rfc2131.c */ |
cdeda28f | 654 | size_t dhcp_reply(struct daemon *daemon, struct dhcp_context *context, char *iface_name, size_t sz, time_t now, int unicast_dest); |
3be34541 SK |
655 | |
656 | /* dnsmasq.c */ | |
5e9e0efb | 657 | int make_icmp_sock(void); |
3be34541 | 658 | int icmp_ping(struct daemon *daemon, struct in_addr addr); |
7cebd20f | 659 | void clear_cache_and_reload(struct daemon *daemon, time_t now); |
44a2a316 | 660 | |
33820b7e SK |
661 | /* isc.c */ |
662 | #ifdef HAVE_ISC_READER | |
fd9fa481 | 663 | void load_dhcp(struct daemon *daemon, time_t now); |
33820b7e | 664 | #endif |
feba5c1d | 665 | |
0a852541 | 666 | /* netlink.c */ |
5e9e0efb | 667 | #ifdef HAVE_LINUX_NETWORK |
cdeda28f | 668 | void netlink_init(struct daemon *daemon); |
5e9e0efb SK |
669 | int iface_enumerate(struct daemon *daemon, void *parm, |
670 | int (*ipv4_callback)(), int (*ipv6_callback)()); | |
cdeda28f | 671 | void netlink_multicast(struct daemon *daemon); |
5e9e0efb SK |
672 | #endif |
673 | ||
674 | /* bpf.c */ | |
675 | #ifndef HAVE_LINUX_NETWORK | |
676 | void init_bpf(struct daemon *daemon); | |
677 | void send_via_bpf(struct daemon *daemon, struct dhcp_packet *mess, size_t len, | |
678 | struct in_addr iface_addr, struct ifreq *ifr); | |
679 | int iface_enumerate(struct daemon *daemon, void *parm, | |
680 | int (*ipv4_callback)(), int (*ipv6_callback)()); | |
0a852541 | 681 | #endif |
3d8df260 SK |
682 | |
683 | /* dbus.c */ | |
684 | #ifdef HAVE_DBUS | |
685 | char *dbus_init(struct daemon *daemon); | |
686 | void check_dbus_listeners(struct daemon *daemon, | |
687 | fd_set *rset, fd_set *wset, fd_set *eset); | |
1697269c SK |
688 | void set_dbus_listeners(struct daemon *daemon, int *maxfdp, |
689 | fd_set *rset, fd_set *wset, fd_set *eset); | |
3d8df260 | 690 | #endif |
1697269c SK |
691 | |
692 | /* helper.c */ | |
693 | int create_helper(struct daemon *daemon); | |
694 | void helper_write(struct daemon *daemon); | |
695 | void queue_script(struct daemon *daemon, int action, | |
696 | struct dhcp_lease *lease, char *hostname); | |
697 | int helper_buf_empty(void); | |
832af0ba SK |
698 | |
699 | /* tftp.c */ | |
700 | #ifdef HAVE_TFTP | |
701 | void tftp_request(struct listener *listen, struct daemon *daemon, time_t now); | |
702 | void check_tftp_listeners(struct daemon *daemon, fd_set *rset, time_t now); | |
703 | #endif |