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git.ipfire.org Git - people/ms/dnsmasq.git/blob - src/dnsmasq.h
1 /* dnsmasq is Copyright (c) 2000-2015 Simon Kelley
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, or
6 (at your option) version 3 dated 29 June, 2007.
8 This program is distributed in the hope that it will be useful,
9 but WITHOUT ANY WARRANTY; without even the implied warranty of
10 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 GNU General Public License for more details.
13 You should have received a copy of the GNU General Public License
14 along with this program. If not, see <http://www.gnu.org/licenses/>.
17 #define COPYRIGHT "Copyright (c) 2000-2015 Simon Kelley"
20 /* Ensure we can use files >2GB (log files may grow this big) */
21 # define _LARGEFILE_SOURCE 1
22 # define _FILE_OFFSET_BITS 64
25 /* Get linux C library versions and define _GNU_SOURCE for kFreeBSD. */
26 #if defined(__linux__) || defined(__GLIBC__)
30 # include <features.h>
33 /* Need these defined early */
34 #if defined(__sun) || defined(__sun__)
36 # define __EXTENSIONS__
39 /* get these before config.h for IPv6 stuff... */
40 #include <sys/types.h>
41 #include <sys/socket.h>
44 /* Define before netinet/in.h to select API. OSX Lion onwards. */
45 # define __APPLE_USE_RFC_3542
47 #include <netinet/in.h>
49 /* Also needed before config.h. */
55 typedef unsigned char u8
;
56 typedef unsigned short u16
;
57 typedef unsigned int u32
;
58 typedef unsigned long long u64
;
60 #define countof(x) (long)(sizeof(x) / sizeof(x[0]))
61 #define MIN(a,b) ((a) < (b) ? (a) : (b))
63 #include "dns-protocol.h"
64 #include "dhcp-protocol.h"
66 #include "dhcp6-protocol.h"
67 #include "radv-protocol.h"
70 #define gettext_noop(S) (S)
76 # define _(S) gettext(S)
79 #include <arpa/inet.h>
81 #include <sys/ioctl.h>
82 #if defined(HAVE_SOLARIS_NETWORK)
83 # include <sys/sockio.h>
85 #include <sys/select.h>
91 #if defined(HAVE_SOLARIS_NETWORK) && !defined(ifr_mtu)
92 /* Some solaris net/if./h omit this. */
93 # define ifr_mtu ifr_ifru.ifru_metric
108 #if defined(__OpenBSD__) || defined(__NetBSD__) || defined(__sun__) || defined (__sun) || defined (__ANDROID__)
109 # include <netinet/if_ether.h>
111 # include <net/ethernet.h>
113 #include <net/if_arp.h>
114 #include <netinet/in_systm.h>
115 #include <netinet/ip.h>
116 #include <netinet/ip_icmp.h>
120 #ifndef HAVE_LINUX_NETWORK
121 # include <net/if_dl.h>
124 #if defined(HAVE_LINUX_NETWORK)
125 #include <linux/capability.h>
126 /* There doesn't seem to be a universally-available
127 userpace header for these. */
128 extern int capset(cap_user_header_t header
, cap_user_data_t data
);
129 extern int capget(cap_user_header_t header
, cap_user_data_t data
);
130 #define LINUX_CAPABILITY_VERSION_1 0x19980330
131 #define LINUX_CAPABILITY_VERSION_2 0x20071026
132 #define LINUX_CAPABILITY_VERSION_3 0x20080522
134 #include <sys/prctl.h>
135 #elif defined(HAVE_SOLARIS_NETWORK)
139 /* daemon is function in the C library.... */
140 #define daemon dnsmasq_daemon
142 /* Async event queue */
144 int event
, data
, msg_sz
;
147 #define EVENT_RELOAD 1
149 #define EVENT_ALARM 3
151 #define EVENT_CHILD 5
152 #define EVENT_REOPEN 6
153 #define EVENT_EXITED 7
154 #define EVENT_KILLED 8
155 #define EVENT_EXEC_ERR 9
156 #define EVENT_PIPE_ERR 10
157 #define EVENT_USER_ERR 11
158 #define EVENT_CAP_ERR 12
159 #define EVENT_PIDFILE 13
160 #define EVENT_HUSER_ERR 14
161 #define EVENT_GROUP_ERR 15
163 #define EVENT_LOG_ERR 17
164 #define EVENT_FORK_ERR 18
165 #define EVENT_LUA_ERR 19
166 #define EVENT_TFTP_ERR 20
167 #define EVENT_INIT 21
168 #define EVENT_NEWADDR 22
169 #define EVENT_NEWROUTE 23
170 #define EVENT_TIME_ERR 24
179 #define EC_INIT_OFFSET 10
181 /* Min buffer size: we check after adding each record, so there must be
182 memory for the largest packet, and the largest record so the
183 min for DNS is PACKETSZ+MAXDNAME+RRFIXEDSZ which is < 1000.
184 This might be increased is EDNS packet size if greater than the minimum.
186 #define DNSMASQ_PACKETSZ PACKETSZ+MAXDNAME+RRFIXEDSZ
188 /* Trust the compiler dead-code eliminator.... */
189 #define option_bool(x) (((x) < 32) ? daemon->options & (1u << (x)) : daemon->options2 & (1u << ((x) - 32)))
191 #define OPT_BOGUSPRIV 0
195 #define OPT_NO_HOSTS 4
196 #define OPT_NO_POLL 5
199 #define OPT_NO_RESOLV 8
201 #define OPT_LOCALMX 10
202 #define OPT_NO_NEG 11
203 #define OPT_NODOTS_LOCAL 12
204 #define OPT_NOWILD 13
205 #define OPT_ETHERS 14
206 #define OPT_RESOLV_DOMAIN 15
207 #define OPT_NO_FORK 16
208 #define OPT_AUTHORITATIVE 17
209 #define OPT_LOCALISE 18
211 #define OPT_DHCP_FQDN 20
212 #define OPT_NO_PING 21
213 #define OPT_LEASE_RO 22
214 #define OPT_ALL_SERVERS 23
215 #define OPT_RELOAD 24
216 #define OPT_LOCAL_REBIND 25
217 #define OPT_TFTP_SECURE 26
218 #define OPT_TFTP_NOBLOCK 27
219 #define OPT_LOG_OPTS 28
220 #define OPT_TFTP_APREF 29
221 #define OPT_NO_OVERRIDE 30
222 #define OPT_NO_REBIND 31
223 #define OPT_ADD_MAC 32
224 #define OPT_DNSSEC_PROXY 33
225 #define OPT_CONSEC_ADDR 34
226 #define OPT_CONNTRACK 35
227 #define OPT_FQDN_UPDATE 36
229 #define OPT_TFTP_LC 38
230 #define OPT_CLEVERBIND 39
232 #define OPT_CLIENT_SUBNET 41
233 #define OPT_QUIET_DHCP 42
234 #define OPT_QUIET_DHCP6 43
235 #define OPT_QUIET_RA 44
236 #define OPT_DNSSEC_VALID 45
237 #define OPT_DNSSEC_TIME 46
238 #define OPT_DNSSEC_DEBUG 47
239 #define OPT_DNSSEC_NO_SIGN 48
240 #define OPT_LOCAL_SERVICE 49
241 #define OPT_LOOP_DETECT 50
242 #define OPT_EXTRALOG 51
243 #define OPT_TFTP_NO_FAIL 52
246 /* extra flags for my_syslog, we use a couple of facilities since they are known
247 not to occupy the same bits as priorities, no matter how syslog.h is set up. */
248 #define MS_TFTP LOG_USER
249 #define MS_DHCP LOG_DAEMON
253 struct in_addr addr4
;
255 struct in6_addr addr6
;
259 /* for cache_insert if RRSIG, DNSKEY, DS */
261 unsigned short class, type
;
268 struct bogus_addr
*next
;
271 /* dns doctor param */
273 struct in_addr in
, end
, out
, mask
;
277 struct mx_srv_record
{
279 int issrv
, srvport
, priority
, weight
;
281 struct mx_srv_record
*next
;
285 char *name
, *replace
, *regexp
, *services
, *flags
;
286 unsigned int order
, pref
;
290 #define TXT_STAT_CACHESIZE 1
291 #define TXT_STAT_INSERTS 2
292 #define TXT_STAT_EVICTIONS 3
293 #define TXT_STAT_MISSES 4
294 #define TXT_STAT_HITS 5
295 #define TXT_STAT_AUTH 6
296 #define TXT_STAT_SERVERS 7
301 unsigned short class, len
;
303 struct txt_record
*next
;
308 struct ptr_record
*next
;
312 char *alias
, *target
;
318 int digestlen
, class, algo
, keytag
, digest_type
;
319 struct ds_config
*next
;
322 #define ADDRLIST_LITERAL 1
323 #define ADDRLIST_IPV6 2
324 #define ADDRLIST_REVONLY 4
327 struct all_addr addr
;
328 int flags
, prefixlen
;
329 struct addrlist
*next
;
337 struct auth_name_list
{
340 struct auth_name_list
*next
;
342 struct addrlist
*subnet
;
343 struct auth_zone
*next
;
350 struct name_list
*next
;
354 struct in6_addr addr6
;
356 struct host_record
*next
;
359 struct interface_name
{
360 char *name
; /* domain name */
361 char *intr
; /* interface name */
362 int family
; /* AF_INET, AF_INET6 or zero for both */
363 struct addrlist
*addr
;
364 struct interface_name
*next
;
369 union bigname
*next
; /* freelist */
373 struct blockdata
*next
;
374 unsigned char key
[KEYBLOCK_LEN
];
378 struct crec
*next
, *prev
, *hash_next
;
379 /* union is 16 bytes when doing IPv6, 8 bytes on 32 bit machines without IPv6 */
381 struct all_addr addr
;
385 struct interface_name
*int_name
;
387 unsigned int uid
; /* 0 if union is interface-name */
390 struct blockdata
*keydata
;
391 unsigned short keylen
, flags
, keytag
;
395 struct blockdata
*keydata
;
396 unsigned short keylen
, keytag
;
398 unsigned char digest
;
401 struct blockdata
*keydata
;
402 unsigned short keylen
, type_covered
, keytag
;
406 time_t ttd
; /* time to die */
407 /* used as class if DNSKEY/DS/RRSIG, index to source for F_HOSTS */
409 unsigned short flags
;
411 char sname
[SMALLDNAME
];
412 union bigname
*bname
;
417 #define F_IMMORTAL (1u<<0)
418 #define F_NAMEP (1u<<1)
419 #define F_REVERSE (1u<<2)
420 #define F_FORWARD (1u<<3)
421 #define F_DHCP (1u<<4)
422 #define F_NEG (1u<<5)
423 #define F_HOSTS (1u<<6)
424 #define F_IPV4 (1u<<7)
425 #define F_IPV6 (1u<<8)
426 #define F_BIGNAME (1u<<9)
427 #define F_NXDOMAIN (1u<<10)
428 #define F_CNAME (1u<<11)
429 #define F_DNSKEY (1u<<12)
430 #define F_CONFIG (1u<<13)
431 #define F_DS (1u<<14)
432 #define F_DNSSECOK (1u<<15)
434 /* below here are only valid as args to log_query: cache
435 entries are limited to 16 bits */
436 #define F_UPSTREAM (1u<<16)
437 #define F_RRNAME (1u<<17)
438 #define F_SERVER (1u<<18)
439 #define F_QUERY (1u<<19)
440 #define F_NOERR (1u<<20)
441 #define F_AUTH (1u<<21)
442 #define F_DNSSEC (1u<<22)
443 #define F_KEYTAG (1u<<23)
444 #define F_SECSTAT (1u<<24)
445 #define F_NO_RR (1u<<25)
446 #define F_IPSET (1u<<26)
447 #define F_NSIGMATCH (1u<<27)
448 #define F_NOEXTRA (1u<<28)
450 /* Values of uid in crecs with F_CONFIG bit set. */
451 #define SRC_INTERFACE 0
457 /* struct sockaddr is not large enough to hold any address,
458 and specifically not big enough to hold an IPv6 address.
459 Blech. Roll our own. */
462 struct sockaddr_in in
;
463 #if defined(HAVE_IPV6)
464 struct sockaddr_in6 in6
;
468 /* bits in flag param to IPv6 callbacks from iface_enumerate() */
469 #define IFACE_TENTATIVE 1
470 #define IFACE_DEPRECATED 2
471 #define IFACE_PERMANENT 4
474 #define SERV_FROM_RESOLV 1 /* 1 for servers from resolv, 0 for command line. */
475 #define SERV_NO_ADDR 2 /* no server, this domain is local only */
476 #define SERV_LITERAL_ADDRESS 4 /* addr is the answer, not the server */
477 #define SERV_HAS_DOMAIN 8 /* server for one domain only */
478 #define SERV_HAS_SOURCE 16 /* source address defined */
479 #define SERV_FOR_NODOTS 32 /* server for names with no domain part only */
480 #define SERV_WARNED_RECURSIVE 64 /* avoid warning spam */
481 #define SERV_FROM_DBUS 128 /* 1 if source is DBus */
482 #define SERV_MARK 256 /* for mark-and-delete */
483 #define SERV_TYPE (SERV_HAS_DOMAIN | SERV_FOR_NODOTS)
484 #define SERV_COUNTED 512 /* workspace for log code */
485 #define SERV_USE_RESOLV 1024 /* forward this domain in the normal way */
486 #define SERV_NO_REBIND 2048 /* inhibit dns-rebind protection */
487 #define SERV_FROM_FILE 4096 /* read from --servers-file */
488 #define SERV_LOOP 8192 /* server causes forwarding loop */
492 union mysockaddr source_addr
;
493 char interface
[IF_NAMESIZE
+1];
494 struct serverfd
*next
;
499 unsigned short refcount
, family
;
503 union mysockaddr addr
, source_addr
;
504 char interface
[IF_NAMESIZE
+1];
505 struct serverfd
*sfd
;
506 char *domain
; /* set if this server only handles a domain. */
508 unsigned int queries
, failed_queries
;
522 union mysockaddr addr
;
523 struct in_addr netmask
; /* only valid for IPv4 */
524 int tftp_ok
, dhcp_ok
, mtu
, done
, warned
, dad
, dns_auth
, index
, multicast_done
, found
;
530 int fd
, tcpfd
, tftpfd
, family
;
531 struct irec
*iface
; /* only sometimes valid for non-wildcard */
532 struct listener
*next
;
535 /* interface and address parms from command line. */
538 union mysockaddr addr
;
543 /* resolv-file parms from command-line */
545 struct resolvc
*next
;
546 int is_default
, logged
;
550 int wd
; /* inotify watch descriptor */
551 char *file
; /* pointer to file part if path */
555 /* adn-hosts parms from command-line (also dhcp-hostsfile and dhcp-optsfile and dhcp-hostsdir*/
557 #define AH_INACTIVE 2
560 #define AH_DHCP_HST 16
561 #define AH_DHCP_OPT 32
563 struct hostsfile
*next
;
567 int wd
; /* inotify watch descriptor */
569 unsigned int index
; /* matches to cache entries for logging */
573 /* DNSSEC status values. */
574 #define STAT_SECURE 1
575 #define STAT_INSECURE 2
577 #define STAT_NEED_DS 4
578 #define STAT_NEED_KEY 5
579 #define STAT_TRUNCATED 6
580 #define STAT_SECURE_WILDCARD 7
581 #define STAT_NO_SIG 8
583 #define STAT_NO_NS 10
584 #define STAT_NEED_DS_NEG 11
585 #define STAT_CHASE_CNAME 12
587 #define FREC_NOREBIND 1
588 #define FREC_CHECKING_DISABLED 2
589 #define FREC_HAS_SUBNET 4
590 #define FREC_DNSKEY_QUERY 8
591 #define FREC_DS_QUERY 16
592 #define FREC_AD_QUESTION 32
593 #define FREC_DO_QUESTION 64
594 #define FREC_ADDED_PHEADER 128
595 #define FREC_CHECK_NOSIGN 256
598 #define HASH_SIZE 20 /* SHA-1 digest size */
600 #define HASH_SIZE sizeof(int)
604 union mysockaddr source
;
605 struct all_addr dest
;
606 struct server
*sentto
; /* NULL means free */
612 unsigned short orig_id
, new_id
;
613 int log_id
, fd
, forwardall
, flags
;
615 unsigned char *hash
[HASH_SIZE
];
617 int class, work_counter
;
618 struct blockdata
*stash
; /* Saved reply, whilst we validate */
619 struct blockdata
*orig_domain
; /* domain of original query, whilst
620 we're seeing is if in unsigned domain */
621 size_t stash_len
, name_start
, name_len
;
622 struct frec
*dependent
; /* Query awaiting internally-generated DNSKEY or DS query */
623 struct frec
*blocking_query
; /* Query which is blocking us. */
628 /* flags in top of length field for DHCP-option tables */
629 #define OT_ADDR_LIST 0x8000
630 #define OT_RFC1035_NAME 0x4000
631 #define OT_INTERNAL 0x2000
632 #define OT_NAME 0x1000
633 #define OT_CSTRING 0x0800
634 #define OT_DEC 0x0400
635 #define OT_TIME 0x0200
637 /* actions in the daemon->helper RPC */
639 #define ACTION_OLD_HOSTNAME 2
642 #define ACTION_TFTP 5
644 #define LEASE_NEW 1 /* newly created */
645 #define LEASE_CHANGED 2 /* modified */
646 #define LEASE_AUX_CHANGED 4 /* CLID or expiry changed */
647 #define LEASE_AUTH_NAME 8 /* hostname came from config, not from client */
648 #define LEASE_USED 16 /* used this DHCPv6 transaction */
649 #define LEASE_NA 32 /* IPv6 no-temporary lease */
650 #define LEASE_TA 64 /* IPv6 temporary lease */
651 #define LEASE_HAVE_HWADDR 128 /* Have set hwaddress */
654 int clid_len
; /* length of client identifier */
655 unsigned char *clid
; /* clientid */
656 char *hostname
, *fqdn
; /* name from client-hostname option or config */
657 char *old_hostname
; /* hostname before it moved to another lease */
659 time_t expires
; /* lease expiry */
660 #ifdef HAVE_BROKEN_RTC
663 int hwaddr_len
, hwaddr_type
;
664 unsigned char hwaddr
[DHCP_CHADDR_MAX
];
665 struct in_addr addr
, override
, giaddr
;
666 unsigned char *extradata
;
667 unsigned int extradata_len
, extradata_size
;
669 int new_interface
; /* save possible originated interface */
670 int new_prefixlen
; /* and its prefix length */
672 struct in6_addr addr6
;
674 struct slaac_address
{
675 struct in6_addr addr
;
677 int backoff
; /* zero -> confirmed */
678 struct slaac_address
*next
;
680 int vendorclass_count
;
682 struct dhcp_lease
*next
;
687 struct dhcp_netid
*next
;
690 struct dhcp_netid_list
{
691 struct dhcp_netid
*list
;
692 struct dhcp_netid_list
*next
;
696 struct dhcp_netid_list
*set
;
697 struct dhcp_netid
*tag
;
701 struct hwaddr_config
{
702 int hwaddr_len
, hwaddr_type
;
703 unsigned char hwaddr
[DHCP_CHADDR_MAX
];
704 unsigned int wildcard_mask
;
705 struct hwaddr_config
*next
;
710 int clid_len
; /* length of client identifier */
711 unsigned char *clid
; /* clientid */
712 char *hostname
, *domain
;
713 struct dhcp_netid_list
*netid
;
715 struct in6_addr addr6
;
719 unsigned int lease_time
;
720 struct hwaddr_config
*hwaddr
;
721 struct dhcp_config
*next
;
724 #define have_config(config, mask) ((config) && ((config)->flags & (mask)))
726 #define CONFIG_DISABLE 1
727 #define CONFIG_CLID 2
728 #define CONFIG_TIME 8
729 #define CONFIG_NAME 16
730 #define CONFIG_ADDR 32
731 #define CONFIG_NOCLID 128
732 #define CONFIG_FROM_ETHERS 256 /* entry created by /etc/ethers */
733 #define CONFIG_ADDR_HOSTS 512 /* address added by from /etc/hosts */
734 #define CONFIG_DECLINED 1024 /* address declined by client */
735 #define CONFIG_BANK 2048 /* from dhcp hosts file */
736 #define CONFIG_ADDR6 4096
737 #define CONFIG_WILDCARD 8192
743 unsigned int wildcard_mask
;
744 unsigned char *vendor_class
;
747 struct dhcp_netid
*netid
;
748 struct dhcp_opt
*next
;
752 #define DHOPT_STRING 2
753 #define DHOPT_ENCAPSULATE 4
754 #define DHOPT_ENCAP_MATCH 8
755 #define DHOPT_FORCE 16
756 #define DHOPT_BANK 32
757 #define DHOPT_ENCAP_DONE 64
758 #define DHOPT_MATCH 128
759 #define DHOPT_VENDOR 256
760 #define DHOPT_HEX 512
761 #define DHOPT_VENDOR_MATCH 1024
762 #define DHOPT_RFC3925 2048
763 #define DHOPT_TAGOK 4096
764 #define DHOPT_ADDR6 8192
767 char *file
, *sname
, *tftp_sname
;
768 struct in_addr next_server
;
769 struct dhcp_netid
*netid
;
770 struct dhcp_boot
*next
;
774 unsigned short CSA
, type
;
775 char *menu
, *basename
, *sname
;
776 struct in_addr server
;
777 struct dhcp_netid
*netid
;
778 struct pxe_service
*next
;
781 #define MATCH_VENDOR 1
783 #define MATCH_CIRCUIT 3
784 #define MATCH_REMOTE 4
785 #define MATCH_SUBSCRIBER 5
787 /* vendorclass, userclass, remote-id or cicuit-id */
790 unsigned int enterprise
;
792 struct dhcp_netid netid
;
793 struct dhcp_vendor
*next
;
798 int hwaddr_len
, hwaddr_type
;
799 unsigned char hwaddr
[DHCP_CHADDR_MAX
];
800 struct dhcp_netid netid
;
801 struct dhcp_mac
*next
;
805 char iface
[IF_NAMESIZE
];
806 struct dhcp_bridge
*alias
, *next
;
810 char *domain
, *prefix
;
811 struct in_addr start
, end
;
813 struct in6_addr start6
, end6
;
816 struct cond_domain
*next
;
819 #ifdef OPTION6_PREFIX_CLASS
820 struct prefix_class
{
822 struct dhcp_netid tag
;
823 struct prefix_class
*next
;
827 struct ra_interface
{
829 int interval
, lifetime
, prio
;
830 struct ra_interface
*next
;
833 struct dhcp_context
{
834 unsigned int lease_time
, addr_epoch
;
835 struct in_addr netmask
, broadcast
;
836 struct in_addr local
, router
;
837 struct in_addr start
, end
; /* range of available addresses */
839 struct in6_addr start6
, end6
; /* range of available addresses */
840 struct in6_addr local6
;
841 int prefix
, if_index
;
842 unsigned int valid
, preferred
, saved_valid
;
843 time_t ra_time
, ra_short_period_start
, address_lost_time
;
844 char *template_interface
;
847 struct dhcp_netid netid
, *filter
;
848 struct dhcp_context
*next
, *current
;
851 #define CONTEXT_STATIC (1u<<0)
852 #define CONTEXT_NETMASK (1u<<1)
853 #define CONTEXT_BRDCAST (1u<<2)
854 #define CONTEXT_PROXY (1u<<3)
855 #define CONTEXT_RA_ROUTER (1u<<4)
856 #define CONTEXT_RA_DONE (1u<<5)
857 #define CONTEXT_RA_NAME (1u<<6)
858 #define CONTEXT_RA_STATELESS (1u<<7)
859 #define CONTEXT_DHCP (1u<<8)
860 #define CONTEXT_DEPRECATE (1u<<9)
861 #define CONTEXT_TEMPLATE (1u<<10) /* create contexts using addresses */
862 #define CONTEXT_CONSTRUCTED (1u<<11)
863 #define CONTEXT_GC (1u<<12)
864 #define CONTEXT_RA (1u<<13)
865 #define CONTEXT_CONF_USED (1u<<14)
866 #define CONTEXT_USED (1u<<15)
867 #define CONTEXT_OLD (1u<<16)
868 #define CONTEXT_V6 (1u<<17)
874 struct ping_result
*next
;
885 struct tftp_transfer
{
889 unsigned int block
, blocksize
, expansion
;
891 union mysockaddr peer
;
892 char opt_blocksize
, opt_transize
, netascii
, carrylf
;
893 struct tftp_file
*file
;
894 struct tftp_transfer
*next
;
899 struct addr_list
*next
;
906 struct tftp_prefix
*next
;
910 struct all_addr local
, server
;
911 char *interface
; /* Allowable interface for replies from server, and dest for IPv6 multicast */
912 int iface_index
; /* working - interface in which requests arrived, for return */
913 struct dhcp_relay
*current
, *next
;
916 extern struct daemon
{
917 /* datastuctures representing the command-line and
918 config file arguments. All set (including defaults)
921 unsigned int options
, options2
;
922 struct resolvc default_resolv
, *resolv_files
;
925 struct mx_srv_record
*mxnames
;
927 struct txt_record
*txt
, *rr
;
928 struct ptr_record
*ptr
;
929 struct host_record
*host_records
, *host_records_tail
;
930 struct cname
*cnames
;
931 struct auth_zone
*auth_zones
;
932 struct interface_name
*int_names
;
937 char *username
, *groupname
, *scriptuser
;
939 char *authserver
, *hostmaster
;
940 struct iname
*authinterface
;
941 struct name_list
*secondary_forward_server
;
942 int group_set
, osport
;
944 struct cond_domain
*cond_domain
, *synth_domains
;
946 char *lease_change_command
;
947 struct iname
*if_names
, *if_addrs
, *if_except
, *dhcp_except
, *auth_peers
, *tftp_interfaces
;
948 struct bogus_addr
*bogus_addr
, *ignore_addr
;
949 struct server
*servers
;
950 struct ipsets
*ipsets
;
951 int log_fac
; /* log facility */
952 char *log_file
; /* optional log file */
953 int max_logs
; /* queue limit */
954 int cachesize
, ftabsize
;
955 int port
, query_port
, min_port
;
956 unsigned long local_ttl
, neg_ttl
, max_ttl
, min_cache_ttl
, max_cache_ttl
, auth_ttl
;
957 struct hostsfile
*addn_hosts
;
958 struct dhcp_context
*dhcp
, *dhcp6
;
959 struct ra_interface
*ra_interfaces
;
960 struct dhcp_config
*dhcp_conf
;
961 struct dhcp_opt
*dhcp_opts
, *dhcp_match
, *dhcp_opts6
, *dhcp_match6
;
962 struct dhcp_vendor
*dhcp_vendors
;
963 struct dhcp_mac
*dhcp_macs
;
964 struct dhcp_boot
*boot_config
;
965 struct pxe_service
*pxe_services
;
966 struct tag_if
*tag_if
;
967 struct addr_list
*override_relays
;
968 struct dhcp_relay
*relay4
, *relay6
;
971 int doing_ra
, doing_dhcp6
;
972 struct dhcp_netid_list
*dhcp_ignore
, *dhcp_ignore_names
, *dhcp_gen_names
;
973 struct dhcp_netid_list
*force_broadcast
, *bootp_dynamic
;
974 struct hostsfile
*dhcp_hosts_file
, *dhcp_opts_file
, *dynamic_dirs
;
975 int dhcp_max
, tftp_max
;
976 int dhcp_server_port
, dhcp_client_port
;
977 int start_tftp_port
, end_tftp_port
;
978 unsigned int min_leasetime
;
979 struct doctor
*doctors
;
980 unsigned short edns_pktsz
;
982 struct tftp_prefix
*if_prefix
; /* per-interface TFTP prefixes */
983 unsigned int duid_enterprise
, duid_config_len
;
984 unsigned char *duid_config
;
986 unsigned long soa_sn
, soa_refresh
, soa_retry
, soa_expiry
;
987 #ifdef OPTION6_PREFIX_CLASS
988 struct prefix_class
*prefix_classes
;
991 struct ds_config
*ds
;
992 char *timestamp_file
;
995 /* globally used stuff for DNS */
996 char *packet
; /* packet buffer */
997 int packet_buff_sz
; /* size of above */
998 char *namebuff
; /* MAXDNAME size buffer */
1000 char *keyname
; /* MAXDNAME size buffer */
1001 char *workspacename
; /* ditto */
1003 unsigned int local_answer
, queries_forwarded
, auth_answer
;
1004 struct frec
*frec_list
;
1005 struct serverfd
*sfds
;
1006 struct irec
*interfaces
;
1007 struct listener
*listeners
;
1008 struct server
*last_server
;
1011 struct server
*srv_save
; /* Used for resend on DoD */
1012 size_t packet_len
; /* " " */
1013 struct randfd
*rfd_save
; /* " " */
1014 pid_t tcp_pids
[MAX_PROCS
];
1015 struct randfd randomsocks
[RANDOM_SOCKS
];
1017 struct addrlist
*interface_addrs
; /* list of all addresses/prefix lengths associated with all local interfaces */
1018 int log_id
, log_display_id
; /* ids of transactions for logging */
1019 union mysockaddr
*log_source_addr
;
1022 int dhcpfd
, helperfd
, pxefd
;
1026 #if defined(HAVE_LINUX_NETWORK)
1028 #elif defined(HAVE_BSD_NETWORK)
1029 int dhcp_raw_fd
, dhcp_icmp_fd
, routefd
;
1031 struct iovec dhcp_packet
;
1032 char *dhcp_buff
, *dhcp_buff2
, *dhcp_buff3
;
1033 struct ping_result
*ping_results
;
1035 struct dhcp_bridge
*bridges
;
1038 unsigned char *duid
;
1039 struct iovec outpacket
;
1040 int dhcp6fd
, icmp6fd
;
1043 /* void * here to avoid depending on dbus headers outside dbus.c */
1046 struct watch
*watches
;
1050 struct tftp_transfer
*tftp_trans
, *tftp_done_trans
;
1052 /* utility string buffer, hold max sized IP address as string */
1054 char *addrbuff2
; /* only allocated when OPT_EXTRALOG */
1059 void cache_init(void);
1060 void log_query(unsigned int flags
, char *name
, struct all_addr
*addr
, char *arg
);
1061 char *record_source(unsigned int index
);
1062 char *querystr(char *desc
, unsigned short type
);
1063 struct crec
*cache_find_by_addr(struct crec
*crecp
,
1064 struct all_addr
*addr
, time_t now
,
1066 struct crec
*cache_find_by_name(struct crec
*crecp
,
1067 char *name
, time_t now
, unsigned int prot
);
1068 void cache_end_insert(void);
1069 void cache_start_insert(void);
1070 struct crec
*cache_insert(char *name
, struct all_addr
*addr
,
1071 time_t now
, unsigned long ttl
, unsigned short flags
);
1072 void cache_reload(void);
1073 void cache_add_dhcp_entry(char *host_name
, int prot
, struct all_addr
*host_address
, time_t ttd
);
1074 struct in_addr
a_record_from_hosts(char *name
, time_t now
);
1075 void cache_unhash_dhcp(void);
1076 void dump_cache(time_t now
);
1077 int cache_make_stat(struct txt_record
*t
);
1078 char *cache_get_name(struct crec
*crecp
);
1079 char *cache_get_cname_target(struct crec
*crecp
);
1080 struct crec
*cache_enumerate(int init
);
1081 int read_hostsfile(char *filename
, unsigned int index
, int cache_size
,
1082 struct crec
**rhash
, int hashsz
);
1086 void blockdata_init(void);
1087 void blockdata_report(void);
1088 struct blockdata
*blockdata_alloc(char *data
, size_t len
);
1089 void *blockdata_retrieve(struct blockdata
*block
, size_t len
, void *data
);
1090 void blockdata_free(struct blockdata
*blocks
);
1094 char *get_domain(struct in_addr addr
);
1096 char *get_domain6(struct in6_addr
*addr
);
1098 int is_name_synthetic(int flags
, char *name
, struct all_addr
*addr
);
1099 int is_rev_synth(int flag
, struct all_addr
*addr
, char *name
);
1102 int extract_name(struct dns_header
*header
, size_t plen
, unsigned char **pp
,
1103 char *name
, int isExtract
, int extrabytes
);
1104 unsigned char *skip_name(unsigned char *ansp
, struct dns_header
*header
, size_t plen
, int extrabytes
);
1105 unsigned char *skip_questions(struct dns_header
*header
, size_t plen
);
1106 unsigned char *skip_section(unsigned char *ansp
, int count
, struct dns_header
*header
, size_t plen
);
1107 unsigned int extract_request(struct dns_header
*header
, size_t qlen
,
1108 char *name
, unsigned short *typep
);
1109 size_t setup_reply(struct dns_header
*header
, size_t qlen
,
1110 struct all_addr
*addrp
, unsigned int flags
,
1111 unsigned long local_ttl
);
1112 int extract_addresses(struct dns_header
*header
, size_t qlen
, char *namebuff
,
1113 time_t now
, char **ipsets
, int is_sign
, int checkrebind
,
1114 int no_cache
, int secure
, int *doctored
);
1115 size_t answer_request(struct dns_header
*header
, char *limit
, size_t qlen
,
1116 struct in_addr local_addr
, struct in_addr local_netmask
,
1117 time_t now
, int *ad_reqd
, int *do_bit
);
1118 int check_for_bogus_wildcard(struct dns_header
*header
, size_t qlen
, char *name
,
1119 struct bogus_addr
*addr
, time_t now
);
1120 int check_for_ignored_address(struct dns_header
*header
, size_t qlen
, struct bogus_addr
*baddr
);
1121 unsigned char *find_pseudoheader(struct dns_header
*header
, size_t plen
,
1122 size_t *len
, unsigned char **p
, int *is_sign
);
1123 int check_for_local_domain(char *name
, time_t now
);
1124 unsigned int questions_crc(struct dns_header
*header
, size_t plen
, char *buff
);
1125 size_t resize_packet(struct dns_header
*header
, size_t plen
,
1126 unsigned char *pheader
, size_t hlen
);
1127 size_t add_mac(struct dns_header
*header
, size_t plen
, char *limit
, union mysockaddr
*l3
);
1128 size_t add_source_addr(struct dns_header
*header
, size_t plen
, char *limit
, union mysockaddr
*source
);
1130 size_t add_do_bit(struct dns_header
*header
, size_t plen
, char *limit
);
1132 int check_source(struct dns_header
*header
, size_t plen
, unsigned char *pseudoheader
, union mysockaddr
*peer
);
1133 int add_resource_record(struct dns_header
*header
, char *limit
, int *truncp
,
1134 int nameoffset
, unsigned char **pp
, unsigned long ttl
,
1135 int *offset
, unsigned short type
, unsigned short class, char *format
, ...);
1136 unsigned char *skip_questions(struct dns_header
*header
, size_t plen
);
1137 int extract_name(struct dns_header
*header
, size_t plen
, unsigned char **pp
,
1138 char *name
, int isExtract
, int extrabytes
);
1139 int in_arpa_name_2_addr(char *namein
, struct all_addr
*addrp
);
1140 int private_net(struct in_addr addr
, int ban_localhost
);
1144 size_t answer_auth(struct dns_header
*header
, char *limit
, size_t qlen
,
1145 time_t now
, union mysockaddr
*peer_addr
, int local_query
);
1146 int in_zone(struct auth_zone
*zone
, char *name
, char **cut
);
1150 size_t dnssec_generate_query(struct dns_header
*header
, char *end
, char *name
, int class, int type
, union mysockaddr
*addr
);
1151 int dnssec_validate_by_ds(time_t now
, struct dns_header
*header
, size_t n
, char *name
, char *keyname
, int class);
1152 int dnssec_validate_ds(time_t now
, struct dns_header
*header
, size_t plen
, char *name
, char *keyname
, int class);
1153 int dnssec_validate_reply(time_t now
, struct dns_header
*header
, size_t plen
, char *name
, char *keyname
, int *class, int *neganswer
, int *nons
);
1154 int dnssec_chase_cname(time_t now
, struct dns_header
*header
, size_t plen
, char *name
, char *keyname
);
1155 int dnskey_keytag(int alg
, int flags
, unsigned char *rdata
, int rdlen
);
1156 size_t filter_rrsigs(struct dns_header
*header
, size_t plen
);
1157 unsigned char* hash_questions(struct dns_header
*header
, size_t plen
, char *name
);
1158 int setup_timestamp(void);
1161 void rand_init(void);
1162 unsigned short rand16(void);
1165 int legal_hostname(char *c
);
1166 char *canonicalise(char *s
, int *nomem
);
1167 unsigned char *do_rfc1035_name(unsigned char *p
, char *sval
);
1168 void *safe_malloc(size_t size
);
1169 void safe_pipe(int *fd
, int read_noblock
);
1170 void *whine_malloc(size_t size
);
1171 int sa_len(union mysockaddr
*addr
);
1172 int sockaddr_isequal(union mysockaddr
*s1
, union mysockaddr
*s2
);
1173 int hostname_isequal(const char *a
, const char *b
);
1174 time_t dnsmasq_time(void);
1175 int netmask_length(struct in_addr mask
);
1176 int is_same_net(struct in_addr a
, struct in_addr b
, struct in_addr mask
);
1178 int is_same_net6(struct in6_addr
*a
, struct in6_addr
*b
, int prefixlen
);
1179 u64
addr6part(struct in6_addr
*addr
);
1180 void setaddr6part(struct in6_addr
*addr
, u64 host
);
1182 int retry_send(ssize_t rc
);
1183 void prettyprint_time(char *buf
, unsigned int t
);
1184 int prettyprint_addr(union mysockaddr
*addr
, char *buf
);
1185 int parse_hex(char *in
, unsigned char *out
, int maxlen
,
1186 unsigned int *wildcard_mask
, int *mac_type
);
1187 int memcmp_masked(unsigned char *a
, unsigned char *b
, int len
,
1189 int expand_buf(struct iovec
*iov
, size_t size
);
1190 char *print_mac(char *buff
, unsigned char *mac
, int len
);
1191 void bump_maxfd(int fd
, int *max
);
1192 int read_write(int fd
, unsigned char *packet
, int size
, int rw
);
1194 int wildcard_match(const char* wildcard
, const char* match
);
1195 int wildcard_matchn(const char* wildcard
, const char* match
, int num
);
1198 void die(char *message
, char *arg1
, int exit_code
);
1199 int log_start(struct passwd
*ent_pw
, int errfd
);
1200 int log_reopen(char *log_file
);
1201 void my_syslog(int priority
, const char *format
, ...);
1202 void set_log_writer(fd_set
*set
, int *maxfdp
);
1203 void check_log_writer(fd_set
*set
);
1204 void flush_log(void);
1207 void read_opts (int argc
, char **argv
, char *compile_opts
);
1208 char *option_string(int prot
, unsigned int opt
, unsigned char *val
,
1209 int opt_len
, char *buf
, int buf_len
);
1210 void reread_dhcp(void);
1211 void read_servers_file(void);
1212 void set_option_bool(unsigned int opt
);
1213 void reset_option_bool(unsigned int opt
);
1214 struct hostsfile
*expand_filelist(struct hostsfile
*list
);
1215 char *parse_server(char *arg
, union mysockaddr
*addr
,
1216 union mysockaddr
*source_addr
, char *interface
, int *flags
);
1217 int option_read_dynfile(char *file
, int flags
);
1220 void reply_query(int fd
, int family
, time_t now
);
1221 void receive_query(struct listener
*listen
, time_t now
);
1222 unsigned char *tcp_request(int confd
, time_t now
,
1223 union mysockaddr
*local_addr
, struct in_addr netmask
, int auth_dns
);
1224 void server_gone(struct server
*server
);
1225 struct frec
*get_new_frec(time_t now
, int *wait
, int force
);
1226 int send_from(int fd
, int nowild
, char *packet
, size_t len
,
1227 union mysockaddr
*to
, struct all_addr
*source
,
1228 unsigned int iface
);
1229 void resend_query();
1230 struct randfd
*allocate_rfd(int family
);
1231 void free_rfd(struct randfd
*rfd
);
1234 int indextoname(int fd
, int index
, char *name
);
1235 int local_bind(int fd
, union mysockaddr
*addr
, char *intname
, int is_tcp
);
1236 int random_sock(int family
);
1237 void pre_allocate_sfds(void);
1238 int reload_servers(char *fname
);
1239 void mark_servers(int flag
);
1240 void cleanup_servers(void);
1241 void add_update_server(int flags
,
1242 union mysockaddr
*addr
,
1243 union mysockaddr
*source_addr
,
1244 const char *interface
,
1245 const char *domain
);
1246 void check_servers(void);
1247 int enumerate_interfaces(int reset
);
1248 void create_wildcard_listeners(void);
1249 void create_bound_listeners(int die
);
1250 void warn_bound_listeners(void);
1251 void warn_int_names(void);
1252 int is_dad_listeners(void);
1253 int iface_check(int family
, struct all_addr
*addr
, char *name
, int *auth_dns
);
1254 int loopback_exception(int fd
, int family
, struct all_addr
*addr
, char *name
);
1255 int label_exception(int index
, int family
, struct all_addr
*addr
);
1257 int tcp_interface(int fd
, int af
);
1259 int set_ipv6pktinfo(int fd
);
1262 void join_multicast(int dienow
);
1264 #if defined(HAVE_LINUX_NETWORK) || defined(HAVE_BSD_NETWORK)
1265 void newaddress(time_t now
);
1271 void dhcp_init(void);
1272 void dhcp_packet(time_t now
, int pxe_fd
);
1273 struct dhcp_context
*address_available(struct dhcp_context
*context
,
1274 struct in_addr addr
,
1275 struct dhcp_netid
*netids
);
1276 struct dhcp_context
*narrow_context(struct dhcp_context
*context
,
1277 struct in_addr taddr
,
1278 struct dhcp_netid
*netids
);
1279 int address_allocate(struct dhcp_context
*context
,
1280 struct in_addr
*addrp
, unsigned char *hwaddr
, int hw_len
,
1281 struct dhcp_netid
*netids
, time_t now
);
1282 void dhcp_read_ethers(void);
1283 struct dhcp_config
*config_find_by_address(struct dhcp_config
*configs
, struct in_addr addr
);
1284 char *host_from_dns(struct in_addr addr
);
1289 void lease_update_file(time_t now
);
1290 void lease_update_dns(int force
);
1291 void lease_init(time_t now
);
1292 struct dhcp_lease
*lease4_allocate(struct in_addr addr
);
1294 struct dhcp_lease
*lease6_allocate(struct in6_addr
*addrp
, int lease_type
);
1295 struct dhcp_lease
*lease6_find(unsigned char *clid
, int clid_len
,
1296 int lease_type
, int iaid
, struct in6_addr
*addr
);
1297 void lease6_reset(void);
1298 struct dhcp_lease
*lease6_find_by_client(struct dhcp_lease
*first
, int lease_type
, unsigned char *clid
, int clid_len
, int iaid
);
1299 struct dhcp_lease
*lease6_find_by_addr(struct in6_addr
*net
, int prefix
, u64 addr
);
1300 u64
lease_find_max_addr6(struct dhcp_context
*context
);
1301 void lease_ping_reply(struct in6_addr
*sender
, unsigned char *packet
, char *interface
);
1302 void lease_update_slaac(time_t now
);
1303 void lease_set_iaid(struct dhcp_lease
*lease
, int iaid
);
1304 void lease_make_duid(time_t now
);
1306 void lease_set_hwaddr(struct dhcp_lease
*lease
, unsigned char *hwaddr
,
1307 unsigned char *clid
, int hw_len
, int hw_type
, int clid_len
, time_t now
, int force
);
1308 void lease_set_hostname(struct dhcp_lease
*lease
, char *name
, int auth
, char *domain
, char *config_domain
);
1309 void lease_set_expires(struct dhcp_lease
*lease
, unsigned int len
, time_t now
);
1310 void lease_set_interface(struct dhcp_lease
*lease
, int interface
, time_t now
);
1311 struct dhcp_lease
*lease_find_by_client(unsigned char *hwaddr
, int hw_len
, int hw_type
,
1312 unsigned char *clid
, int clid_len
);
1313 struct dhcp_lease
*lease_find_by_addr(struct in_addr addr
);
1314 struct in_addr
lease_find_max_addr(struct dhcp_context
*context
);
1315 void lease_prune(struct dhcp_lease
*target
, time_t now
);
1316 void lease_update_from_configs(void);
1317 int do_script_run(time_t now
);
1318 void rerun_scripts(void);
1319 void lease_find_interfaces(time_t now
);
1321 void lease_add_extradata(struct dhcp_lease
*lease
, unsigned char *data
,
1322 unsigned int len
, int delim
);
1328 size_t dhcp_reply(struct dhcp_context
*context
, char *iface_name
, int int_index
,
1329 size_t sz
, time_t now
, int unicast_dest
, int *is_inform
, int pxe_fd
, struct in_addr fallback
);
1330 unsigned char *extended_hwaddr(int hwtype
, int hwlen
, unsigned char *hwaddr
,
1331 int clid_len
, unsigned char *clid
, int *len_out
);
1336 int make_icmp_sock(void);
1337 int icmp_ping(struct in_addr addr
);
1339 void queue_event(int event
);
1340 void send_alarm(time_t event
, time_t now
);
1341 void send_event(int fd
, int event
, int data
, char *msg
);
1342 void clear_cache_and_reload(time_t now
);
1345 #ifdef HAVE_LINUX_NETWORK
1346 void netlink_init(void);
1347 void netlink_multicast(void);
1351 #ifdef HAVE_BSD_NETWORK
1352 void init_bpf(void);
1353 void send_via_bpf(struct dhcp_packet
*mess
, size_t len
,
1354 struct in_addr iface_addr
, struct ifreq
*ifr
);
1355 void route_init(void);
1356 void route_sock(void);
1359 /* bpf.c or netlink.c */
1360 int iface_enumerate(int family
, void *parm
, int (callback
)());
1364 char *dbus_init(void);
1365 void check_dbus_listeners(fd_set
*rset
, fd_set
*wset
, fd_set
*eset
);
1366 void set_dbus_listeners(int *maxfdp
, fd_set
*rset
, fd_set
*wset
, fd_set
*eset
);
1368 void emit_dbus_signal(int action
, struct dhcp_lease
*lease
, char *hostname
);
1374 void ipset_init(void);
1375 int add_to_ipset(const char *setname
, const struct all_addr
*ipaddr
, int flags
, int remove
);
1379 #if defined(HAVE_SCRIPT)
1380 int create_helper(int event_fd
, int err_fd
, uid_t uid
, gid_t gid
, long max_fd
);
1381 void helper_write(void);
1382 void queue_script(int action
, struct dhcp_lease
*lease
,
1383 char *hostname
, time_t now
);
1385 void queue_tftp(off_t file_len
, char *filename
, union mysockaddr
*peer
);
1387 int helper_buf_empty(void);
1392 void tftp_request(struct listener
*listen
, time_t now
);
1393 void check_tftp_listeners(fd_set
*rset
, time_t now
);
1394 int do_tftp_script_run(void);
1398 #ifdef HAVE_CONNTRACK
1399 int get_incoming_mark(union mysockaddr
*peer_addr
, struct all_addr
*local_addr
,
1400 int istcp
, unsigned int *markp
);
1405 void dhcp6_init(void);
1406 void dhcp6_packet(time_t now
);
1407 struct dhcp_context
*address6_allocate(struct dhcp_context
*context
, unsigned char *clid
, int clid_len
, int temp_addr
,
1408 int iaid
, int serial
, struct dhcp_netid
*netids
, int plain_range
, struct in6_addr
*ans
);
1409 int config_valid(struct dhcp_config
*config
, struct dhcp_context
*context
, struct in6_addr
*addr
);
1410 struct dhcp_context
*address6_available(struct dhcp_context
*context
,
1411 struct in6_addr
*taddr
,
1412 struct dhcp_netid
*netids
,
1414 struct dhcp_context
*address6_valid(struct dhcp_context
*context
,
1415 struct in6_addr
*taddr
,
1416 struct dhcp_netid
*netids
,
1418 struct dhcp_config
*config_find_by_address6(struct dhcp_config
*configs
, struct in6_addr
*net
,
1419 int prefix
, u64 addr
);
1420 void make_duid(time_t now
);
1421 void dhcp_construct_contexts(time_t now
);
1422 void get_client_mac(struct in6_addr
*client
, int iface
, unsigned char *mac
,
1423 unsigned int *maclenp
, unsigned int *mactypep
);
1428 unsigned short dhcp6_reply(struct dhcp_context
*context
, int interface
, char *iface_name
,
1429 struct in6_addr
*fallback
, struct in6_addr
*ll_addr
, struct in6_addr
*ula_addr
,
1430 size_t sz
, struct in6_addr
*client_addr
, time_t now
);
1431 void relay_upstream6(struct dhcp_relay
*relay
, ssize_t sz
, struct in6_addr
*peer_address
, u32 scope_id
);
1433 unsigned short relay_reply6( struct sockaddr_in6
*peer
, ssize_t sz
, char *arrival_interface
);
1438 void dhcp_common_init(void);
1439 ssize_t
recv_dhcp_packet(int fd
, struct msghdr
*msg
);
1440 struct dhcp_netid
*run_tag_if(struct dhcp_netid
*input
);
1441 struct dhcp_netid
*option_filter(struct dhcp_netid
*tags
, struct dhcp_netid
*context_tags
,
1442 struct dhcp_opt
*opts
);
1443 int match_netid(struct dhcp_netid
*check
, struct dhcp_netid
*pool
, int negonly
);
1444 char *strip_hostname(char *hostname
);
1445 void log_tags(struct dhcp_netid
*netid
, u32 xid
);
1446 int match_bytes(struct dhcp_opt
*o
, unsigned char *p
, int len
);
1447 void dhcp_update_configs(struct dhcp_config
*configs
);
1448 void display_opts(void);
1449 int lookup_dhcp_opt(int prot
, char *name
);
1450 int lookup_dhcp_len(int prot
, int val
);
1451 char *option_string(int prot
, unsigned int opt
, unsigned char *val
,
1452 int opt_len
, char *buf
, int buf_len
);
1453 struct dhcp_config
*find_config(struct dhcp_config
*configs
,
1454 struct dhcp_context
*context
,
1455 unsigned char *clid
, int clid_len
,
1456 unsigned char *hwaddr
, int hw_len
,
1457 int hw_type
, char *hostname
);
1458 int config_has_mac(struct dhcp_config
*config
, unsigned char *hwaddr
, int len
, int type
);
1459 #ifdef HAVE_LINUX_NETWORK
1460 char *whichdevice(void);
1461 void bindtodevice(char *device
, int fd
);
1464 void display_opts6(void);
1466 void log_context(int family
, struct dhcp_context
*context
);
1467 void log_relay(int family
, struct dhcp_relay
*relay
);
1472 void end_opt6(int container
);
1473 int save_counter(int newval
);
1474 void *expand(size_t headroom
);
1475 int new_opt6(int opt
);
1476 void *put_opt6(void *data
, size_t len
);
1477 void put_opt6_long(unsigned int val
);
1478 void put_opt6_short(unsigned int val
);
1479 void put_opt6_char(unsigned int val
);
1480 void put_opt6_string(char *s
);
1485 void ra_init(time_t now
);
1486 void icmp6_packet(time_t now
);
1487 time_t periodic_ra(time_t now
);
1488 void ra_start_unsolicted(time_t now
, struct dhcp_context
*context
);
1493 void slaac_add_addrs(struct dhcp_lease
*lease
, time_t now
, int force
);
1494 time_t periodic_slaac(time_t now
, struct dhcp_lease
*leases
);
1495 void slaac_ping_reply(struct in6_addr
*sender
, unsigned char *packet
, char *interface
, struct dhcp_lease
*leases
);
1500 void loop_send_probes();
1501 int detect_loop(char *query
, int type
);
1506 void inotify_dnsmasq_init();
1507 int inotify_check(time_t now
);
1508 void set_dynamic_inotify(int flag
, int total_size
, struct crec
**rhash
, int revhashsz
);