-/* dnsmasq is Copyright (c) 2000-2008 Simon Kelley
+/* dnsmasq is Copyright (c) 2000-2013 Simon Kelley
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
- You should have received a copy of the GNU General Public License
- along with this program. If not, see <http://www.gnu.org/licenses/>.
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
-#define COPYRIGHT "Copyright (C) 2000-2008 Simon Kelley"
+#define COPYRIGHT "Copyright (c) 2000-2013 Simon Kelley"
+
+#ifndef NO_LARGEFILE
+/* Ensure we can use files >2GB (log files may grow this big) */
+# define _LARGEFILE_SOURCE 1
+# define _FILE_OFFSET_BITS 64
+#endif
+
+/* Get linux C library versions and define _GNU_SOURCE for kFreeBSD. */
+#if defined(__linux__) || defined(__GLIBC__)
+# ifndef __ANDROID__
+# define _GNU_SOURCE
+# endif
+# include <features.h>
+#endif
+
+/* Need these defined early */
+#if defined(__sun) || defined(__sun__)
+# define _XPG4_2
+# define __EXTENSIONS__
+#endif
/* get these before config.h for IPv6 stuff... */
#include <sys/types.h>
-#include <netinet/in.h>
+#include <sys/socket.h>
#ifdef __APPLE__
-/* need this before arpa/nameser.h */
-# define BIND_8_COMPAT
+/* Define before netinet/in.h to select API. OSX Lion onwards. */
+# define __APPLE_USE_RFC_3542
#endif
-#include <arpa/nameser.h>
+#include <netinet/in.h>
-/* and this. */
+/* Also needed before config.h. */
#include <getopt.h>
#include "config.h"
+typedef unsigned char u8;
+typedef unsigned short u16;
+typedef unsigned int u32;
+typedef unsigned long long u64;
+
+#include "dns-protocol.h"
+#include "dhcp-protocol.h"
+#ifdef HAVE_DHCP6
+#include "dhcp6-protocol.h"
+#include "radv-protocol.h"
+#endif
+
#define gettext_noop(S) (S)
#ifndef LOCALEDIR
# define _(S) (S)
#include <arpa/inet.h>
#include <sys/stat.h>
-#include <sys/socket.h>
#include <sys/ioctl.h>
#if defined(HAVE_SOLARIS_NETWORK)
-#include <sys/sockio.h>
+# include <sys/sockio.h>
#endif
#include <sys/select.h>
#include <sys/wait.h>
#include <sys/un.h>
#include <limits.h>
#include <net/if.h>
+#if defined(HAVE_SOLARIS_NETWORK) && !defined(ifr_mtu)
+/* Some solaris net/if./h omit this. */
+# define ifr_mtu ifr_ifru.ifru_metric
+#endif
#include <unistd.h>
#include <stdio.h>
#include <string.h>
#include <fcntl.h>
#include <ctype.h>
#include <signal.h>
+#include <stddef.h>
#include <time.h>
#include <errno.h>
#include <pwd.h>
#include <grp.h>
#include <stdarg.h>
-#if defined(__OpenBSD__) || defined(__NetBSD__) || defined(__sun__)
+#if defined(__OpenBSD__) || defined(__NetBSD__) || defined(__sun__) || defined (__sun) || defined (__ANDROID__)
# include <netinet/if_ether.h>
#else
# include <net/ethernet.h>
#if defined(HAVE_LINUX_NETWORK)
#include <linux/capability.h>
/* There doesn't seem to be a universally-available
- userpace header for this. */
+ userpace header for these. */
extern int capset(cap_user_header_t header, cap_user_data_t data);
+extern int capget(cap_user_header_t header, cap_user_data_t data);
+#define LINUX_CAPABILITY_VERSION_1 0x19980330
+#define LINUX_CAPABILITY_VERSION_2 0x20071026
+#define LINUX_CAPABILITY_VERSION_3 0x20080522
+
#include <sys/prctl.h>
-#elif defined(HAVE_SOLARIS_PRIVS)
+#elif defined(HAVE_SOLARIS_NETWORK)
#include <priv.h>
#endif
/* Async event queue */
struct event_desc {
- int event, data;
+ int event, data, msg_sz;
};
#define EVENT_RELOAD 1
#define EVENT_KILLED 8
#define EVENT_EXEC_ERR 9
#define EVENT_PIPE_ERR 10
+#define EVENT_USER_ERR 11
+#define EVENT_CAP_ERR 12
+#define EVENT_PIDFILE 13
+#define EVENT_HUSER_ERR 14
+#define EVENT_GROUP_ERR 15
+#define EVENT_DIE 16
+#define EVENT_LOG_ERR 17
+#define EVENT_FORK_ERR 18
+#define EVENT_LUA_ERR 19
+#define EVENT_TFTP_ERR 20
/* Exit codes. */
#define EC_GOOD 0
*/
#define DNSMASQ_PACKETSZ PACKETSZ+MAXDNAME+RRFIXEDSZ
-#define OPT_BOGUSPRIV (1<<0)
-#define OPT_FILTER (1<<1)
-#define OPT_LOG (1<<2)
-#define OPT_SELFMX (1<<3)
-#define OPT_NO_HOSTS (1<<4)
-#define OPT_NO_POLL (1<<5)
-#define OPT_DEBUG (1<<6)
-#define OPT_ORDER (1<<7)
-#define OPT_NO_RESOLV (1<<8)
-#define OPT_EXPAND (1<<9)
-#define OPT_LOCALMX (1<<10)
-#define OPT_NO_NEG (1<<11)
-#define OPT_NODOTS_LOCAL (1<<12)
-#define OPT_NOWILD (1<<13)
-#define OPT_ETHERS (1<<14)
-#define OPT_RESOLV_DOMAIN (1<<15)
-#define OPT_NO_FORK (1<<16)
-#define OPT_AUTHORITATIVE (1<<17)
-#define OPT_LOCALISE (1<<18)
-#define OPT_DBUS (1<<19)
-#define OPT_BOOTP_DYNAMIC (1<<20)
-#define OPT_NO_PING (1<<21)
-#define OPT_LEASE_RO (1<<22)
-#define OPT_ALL_SERVERS (1<<23)
-#define OPT_RELOAD (1<<24)
-#define OPT_TFTP (1<<25)
-#define OPT_TFTP_SECURE (1<<26)
-#define OPT_TFTP_NOBLOCK (1<<27)
-#define OPT_LOG_OPTS (1<<28)
-#define OPT_TFTP_APREF (1<<29)
-#define OPT_NO_OVERRIDE (1<<30)
-#define OPT_NO_REBIND (1<<31)
+/* Trust the compiler dead-code eliminator.... */
+#define option_bool(x) (((x) < 32) ? daemon->options & (1u << (x)) : daemon->options2 & (1u << ((x) - 32)))
+
+#define OPT_BOGUSPRIV 0
+#define OPT_FILTER 1
+#define OPT_LOG 2
+#define OPT_SELFMX 3
+#define OPT_NO_HOSTS 4
+#define OPT_NO_POLL 5
+#define OPT_DEBUG 6
+#define OPT_ORDER 7
+#define OPT_NO_RESOLV 8
+#define OPT_EXPAND 9
+#define OPT_LOCALMX 10
+#define OPT_NO_NEG 11
+#define OPT_NODOTS_LOCAL 12
+#define OPT_NOWILD 13
+#define OPT_ETHERS 14
+#define OPT_RESOLV_DOMAIN 15
+#define OPT_NO_FORK 16
+#define OPT_AUTHORITATIVE 17
+#define OPT_LOCALISE 18
+#define OPT_DBUS 19
+#define OPT_DHCP_FQDN 20
+#define OPT_NO_PING 21
+#define OPT_LEASE_RO 22
+#define OPT_ALL_SERVERS 23
+#define OPT_RELOAD 24
+#define OPT_LOCAL_REBIND 25
+#define OPT_TFTP_SECURE 26
+#define OPT_TFTP_NOBLOCK 27
+#define OPT_LOG_OPTS 28
+#define OPT_TFTP_APREF 29
+#define OPT_NO_OVERRIDE 30
+#define OPT_NO_REBIND 31
+#define OPT_ADD_MAC 32
+#define OPT_DNSSEC 33
+#define OPT_CONSEC_ADDR 34
+#define OPT_CONNTRACK 35
+#define OPT_FQDN_UPDATE 36
+#define OPT_RA 37
+#define OPT_TFTP_LC 38
+#define OPT_CLEVERBIND 39
+#define OPT_TFTP 40
+#define OPT_LAST 41
+
+/* extra flags for my_syslog, we use a couple of facilities since they are known
+ not to occupy the same bits as priorities, no matter how syslog.h is set up. */
+#define MS_TFTP LOG_USER
+#define MS_DHCP LOG_DAEMON
struct all_addr {
union {
/* dns doctor param */
struct doctor {
- struct in_addr in, out, mask;
+ struct in_addr in, end, out, mask;
struct doctor *next;
};
struct mx_srv_record *next;
};
+struct naptr {
+ char *name, *replace, *regexp, *services, *flags;
+ unsigned int order, pref;
+ struct naptr *next;
+};
+
struct txt_record {
- char *name, *txt;
+ char *name;
+ unsigned char *txt;
unsigned short class, len;
struct txt_record *next;
};
struct ptr_record *next;
};
+struct cname {
+ char *alias, *target;
+ struct cname *next;
+};
+
+struct auth_zone {
+ char *domain;
+ struct subnet {
+ int is6, prefixlen;
+ struct in_addr addr4;
+#ifdef HAVE_IPV6
+ struct in6_addr addr6;
+#endif
+ struct subnet *next;
+ } *subnet;
+ struct auth_zone *next;
+};
+
+
+struct host_record {
+ struct name_list {
+ char *name;
+ struct name_list *next;
+ } *names;
+ struct in_addr addr;
+#ifdef HAVE_IPV6
+ struct in6_addr addr6;
+#endif
+ struct host_record *next;
+};
+
struct interface_name {
char *name; /* domain name */
char *intr; /* interface name */
union bigname *next; /* freelist */
};
+struct keydata {
+ struct keydata *next;
+ unsigned char key[KEYBLOCK_LEN];
+};
+
struct crec {
struct crec *next, *prev, *hash_next;
- time_t ttd; /* time to die */
- int uid;
+ /* union is 16 bytes when doing IPv6, 8 bytes on 32 bit machines without IPv6 */
union {
struct all_addr addr;
struct {
struct crec *cache;
int uid;
} cname;
+ struct {
+ struct keydata *keydata;
+ unsigned char algo;
+ unsigned char digest; /* DS only */
+ unsigned short flags_or_keyid; /* flags for DNSKEY, keyid for DS */
+ } key;
} addr;
+ time_t ttd; /* time to die */
+ /* used as keylen if F_DS or F_DNSKEY, index to source for F_HOSTS */
+ int uid;
unsigned short flags;
union {
char sname[SMALLDNAME];
} name;
};
-#define F_IMMORTAL 1
-#define F_CONFIG 2
-#define F_REVERSE 4
-#define F_FORWARD 8
-#define F_DHCP 16
-#define F_NEG 32
-#define F_HOSTS 64
-#define F_IPV4 128
-#define F_IPV6 256
-#define F_BIGNAME 512
-#define F_UPSTREAM 1024
-#define F_SERVER 2048
-#define F_NXDOMAIN 4096
-#define F_QUERY 8192
-#define F_CNAME 16384
-#define F_NOERR 32768
+#define F_IMMORTAL (1u<<0)
+#define F_NAMEP (1u<<1)
+#define F_REVERSE (1u<<2)
+#define F_FORWARD (1u<<3)
+#define F_DHCP (1u<<4)
+#define F_NEG (1u<<5)
+#define F_HOSTS (1u<<6)
+#define F_IPV4 (1u<<7)
+#define F_IPV6 (1u<<8)
+#define F_BIGNAME (1u<<9)
+#define F_NXDOMAIN (1u<<10)
+#define F_CNAME (1u<<11)
+#define F_DNSKEY (1u<<12)
+#define F_CONFIG (1u<<13)
+#define F_DS (1u<<14)
+#define F_DNSSECOK (1u<<15)
+
+/* below here are only valid as args to log_query: cache
+ entries are limited to 16 bits */
+#define F_UPSTREAM (1u<<16)
+#define F_RRNAME (1u<<17)
+#define F_SERVER (1u<<18)
+#define F_QUERY (1u<<19)
+#define F_NOERR (1u<<20)
+#define F_AUTH (1u<<21)
+
+/* composites */
+#define F_TYPE (F_IPV4 | F_IPV6 | F_DNSKEY | F_DS) /* Only one may be set */
+
+
/* struct sockaddr is not large enough to hold any address,
and specifically not big enough to hold an IPv6 address.
union mysockaddr {
struct sockaddr sa;
struct sockaddr_in in;
-#ifdef HAVE_BROKEN_SOCKADDR_IN6
- /* early versions of glibc don't include sin6_scope_id in sockaddr_in6
- but latest kernels _require_ it to be set. The choice is to have
- dnsmasq fail to compile on back-level libc or fail to run
- on latest kernels with IPv6. Or to do this: sorry that it's so gross. */
- struct my_sockaddr_in6 {
- sa_family_t sin6_family; /* AF_INET6 */
- uint16_t sin6_port; /* transport layer port # */
- uint32_t sin6_flowinfo; /* IPv6 traffic class & flow info */
- struct in6_addr sin6_addr; /* IPv6 address */
- uint32_t sin6_scope_id; /* set of interfaces for a scope */
- } in6;
-#elif defined(HAVE_IPV6)
+#if defined(HAVE_IPV6)
struct sockaddr_in6 in6;
#endif
};
+/* bits in flag param to IPv6 callbacks from iface_enumerate() */
+#define IFACE_TENTATIVE 1
+#define IFACE_DEPRECATED 2
+
+
#define SERV_FROM_RESOLV 1 /* 1 for servers from resolv, 0 for command line. */
#define SERV_NO_ADDR 2 /* no server, this domain is local only */
#define SERV_LITERAL_ADDRESS 4 /* addr is the answer, not the server */
#define SERV_MARK 256 /* for mark-and-delete */
#define SERV_TYPE (SERV_HAS_DOMAIN | SERV_FOR_NODOTS)
#define SERV_COUNTED 512 /* workspace for log code */
+#define SERV_USE_RESOLV 1024 /* forward this domain in the normal way */
+#define SERV_NO_REBIND 2048 /* inhibit dns-rebind protection */
struct serverfd {
int fd;
struct serverfd *next;
};
+struct randfd {
+ int fd;
+ unsigned short refcount, family;
+};
+
struct server {
union mysockaddr addr, source_addr;
char interface[IF_NAMESIZE+1];
struct server *next;
};
+struct ipsets {
+ char **sets;
+ char *domain;
+ struct ipsets *next;
+};
+
struct irec {
union mysockaddr addr;
struct in_addr netmask; /* only valid for IPv4 */
- int dhcp_ok;
+ int tftp_ok, dhcp_ok, mtu, done, dad, dns_auth, index, multicast_done;
+ char *name;
struct irec *next;
};
struct listener {
int fd, tcpfd, tftpfd, family;
- struct irec *iface; /* only valid for non-wildcard */
+ struct irec *iface; /* only sometimes valid for non-wildcard */
struct listener *next;
};
struct iname {
char *name;
union mysockaddr addr;
- int isloop, used;
+ int used;
struct iname *next;
};
char *name;
};
-/* adn-hosts parms from command-line */
+/* adn-hosts parms from command-line (also dhcp-hostsfile and dhcp-optsfile */
+#define AH_DIR 1
+#define AH_INACTIVE 2
struct hostsfile {
struct hostsfile *next;
+ int flags;
char *fname;
int index; /* matches to cache entries for logging */
};
+#define FREC_NOREBIND 1
+#define FREC_CHECKING_DISABLED 2
+
struct frec {
union mysockaddr source;
struct all_addr dest;
struct server *sentto; /* NULL means free */
+ struct randfd *rfd4;
+#ifdef HAVE_IPV6
+ struct randfd *rfd6;
+#endif
unsigned int iface;
unsigned short orig_id, new_id;
- int fd, forwardall;
+ int fd, forwardall, flags;
unsigned int crc;
time_t time;
struct frec *next;
};
+/* flags in top of length field for DHCP-option tables */
+#define OT_ADDR_LIST 0x8000
+#define OT_RFC1035_NAME 0x4000
+#define OT_INTERNAL 0x2000
+#define OT_NAME 0x1000
+#define OT_CSTRING 0x0800
+#define OT_DEC 0x0400
+#define OT_TIME 0x0200
+
/* actions in the daemon->helper RPC */
#define ACTION_DEL 1
#define ACTION_OLD_HOSTNAME 2
#define ACTION_OLD 3
#define ACTION_ADD 4
+#define ACTION_TFTP 5
-#define DHCP_CHADDR_MAX 16
+#define LEASE_NEW 1 /* newly created */
+#define LEASE_CHANGED 2 /* modified */
+#define LEASE_AUX_CHANGED 4 /* CLID or expiry changed */
+#define LEASE_AUTH_NAME 8 /* hostname came from config, not from client */
+#define LEASE_USED 16 /* used this DHCPv6 transaction */
+#define LEASE_NA 32 /* IPv6 no-temporary lease */
+#define LEASE_TA 64 /* IPv6 temporary lease */
+#define LEASE_HAVE_HWADDR 128 /* Have set hwaddress */
struct dhcp_lease {
int clid_len; /* length of client identifier */
unsigned char *clid; /* clientid */
char *hostname, *fqdn; /* name from client-hostname option or config */
char *old_hostname; /* hostname before it moved to another lease */
- char auth_name; /* hostname came from config, not from client */
- char new; /* newly created */
- char changed; /* modified */
- char aux_changed; /* CLID or expiry changed */
+ int flags;
time_t expires; /* lease expiry */
#ifdef HAVE_BROKEN_RTC
unsigned int length;
#endif
- int hwaddr_len, hwaddr_type;
- unsigned char hwaddr[DHCP_CHADDR_MAX];
- struct in_addr addr;
- unsigned char *vendorclass, *userclass;
- unsigned int vendorclass_len, userclass_len;
+ int hwaddr_len, hwaddr_type; /* hw_type used for iaid in v6 */
+ unsigned char hwaddr[DHCP_CHADDR_MAX]; /* also IPv6 address */
+ struct in_addr addr, override, giaddr;
+ unsigned char *extradata;
+ unsigned int extradata_len, extradata_size;
int last_interface;
+#ifdef HAVE_DHCP6
+ struct slaac_address {
+ struct in6_addr addr, local;
+ time_t ping_time;
+ int backoff; /* zero -> confirmed */
+ struct slaac_address *next;
+ } *slaac_address;
+ int vendorclass_count;
+#endif
struct dhcp_lease *next;
};
struct dhcp_netid_list *next;
};
+struct tag_if {
+ struct dhcp_netid_list *set;
+ struct dhcp_netid *tag;
+ struct tag_if *next;
+};
+
+struct hwaddr_config {
+ int hwaddr_len, hwaddr_type;
+ unsigned char hwaddr[DHCP_CHADDR_MAX];
+ unsigned int wildcard_mask;
+ struct hwaddr_config *next;
+};
+
struct dhcp_config {
unsigned int flags;
int clid_len; /* length of client identifier */
unsigned char *clid; /* clientid */
- int hwaddr_len, hwaddr_type;
- unsigned char hwaddr[DHCP_CHADDR_MAX];
- char *hostname;
- struct dhcp_netid netid;
+ char *hostname, *domain;
+ struct dhcp_netid_list *netid;
+#ifdef HAVE_DHCP6
+ struct in6_addr addr6;
+#endif
struct in_addr addr;
time_t decline_time;
- unsigned int lease_time, wildcard_mask;
+ unsigned int lease_time;
+ struct hwaddr_config *hwaddr;
struct dhcp_config *next;
};
+#define have_config(config, mask) ((config) && ((config)->flags & (mask)))
+
#define CONFIG_DISABLE 1
#define CONFIG_CLID 2
-#define CONFIG_HWADDR 4
#define CONFIG_TIME 8
#define CONFIG_NAME 16
#define CONFIG_ADDR 32
-#define CONFIG_NETID 64
#define CONFIG_NOCLID 128
#define CONFIG_FROM_ETHERS 256 /* entry created by /etc/ethers */
#define CONFIG_ADDR_HOSTS 512 /* address added by from /etc/hosts */
#define CONFIG_DECLINED 1024 /* address declined by client */
#define CONFIG_BANK 2048 /* from dhcp hosts file */
+#define CONFIG_ADDR6 4096
+#define CONFIG_WILDCARD 8192
struct dhcp_opt {
int opt, len, flags;
- unsigned char *val, *vendor_class;
+ union {
+ int encap;
+ unsigned int wildcard_mask;
+ unsigned char *vendor_class;
+ } u;
+ unsigned char *val;
struct dhcp_netid *netid;
struct dhcp_opt *next;
};
#define DHOPT_ADDR 1
#define DHOPT_STRING 2
#define DHOPT_ENCAPSULATE 4
-#define DHOPT_VENDOR_MATCH 8
+#define DHOPT_ENCAP_MATCH 8
#define DHOPT_FORCE 16
#define DHOPT_BANK 32
+#define DHOPT_ENCAP_DONE 64
+#define DHOPT_MATCH 128
+#define DHOPT_VENDOR 256
+#define DHOPT_HEX 512
+#define DHOPT_VENDOR_MATCH 1024
+#define DHOPT_RFC3925 2048
+#define DHOPT_TAGOK 4096
+#define DHOPT_ADDR6 8192
struct dhcp_boot {
- char *file, *sname;
+ char *file, *sname, *tftp_sname;
struct in_addr next_server;
struct dhcp_netid *netid;
struct dhcp_boot *next;
};
+struct pxe_service {
+ unsigned short CSA, type;
+ char *menu, *basename, *sname;
+ struct in_addr server;
+ struct dhcp_netid *netid;
+ struct pxe_service *next;
+};
+
#define MATCH_VENDOR 1
#define MATCH_USER 2
#define MATCH_CIRCUIT 3
#define MATCH_REMOTE 4
#define MATCH_SUBSCRIBER 5
-#define MATCH_OPTION 6
/* vendorclass, userclass, remote-id or cicuit-id */
struct dhcp_vendor {
- int len, match_type, option;
+ int len, match_type;
+ unsigned int enterprise;
char *data;
struct dhcp_netid netid;
struct dhcp_vendor *next;
struct dhcp_mac *next;
};
-#if defined(__FreeBSD__) || defined(__DragonFly__)
struct dhcp_bridge {
char iface[IF_NAMESIZE];
struct dhcp_bridge *alias, *next;
};
+
+struct cond_domain {
+ char *domain;
+ struct in_addr start, end;
+#ifdef HAVE_IPV6
+ struct in6_addr start6, end6;
+#endif
+ int is6;
+ struct cond_domain *next;
+};
+
+#ifdef OPTION6_PREFIX_CLASS
+struct prefix_class {
+ int class;
+ struct dhcp_netid tag;
+ struct prefix_class *next;
+};
#endif
struct dhcp_context {
struct in_addr netmask, broadcast;
struct in_addr local, router;
struct in_addr start, end; /* range of available addresses */
+#ifdef HAVE_DHCP6
+ struct in6_addr start6, end6; /* range of available addresses */
+ struct in6_addr local6;
+ int prefix, if_index;
+ unsigned int valid, preferred;
+ time_t ra_time, ra_short_period_start;
+ char *template_interface;
+#endif
int flags;
struct dhcp_netid netid, *filter;
struct dhcp_context *next, *current;
};
-#define CONTEXT_STATIC 1
-#define CONTEXT_NETMASK 2
-#define CONTEXT_BRDCAST 4
-
-
-typedef unsigned char u8;
-typedef unsigned short u16;
-typedef unsigned int u32;
-
-
-struct dhcp_packet {
- u8 op, htype, hlen, hops;
- u32 xid;
- u16 secs, flags;
- struct in_addr ciaddr, yiaddr, siaddr, giaddr;
- u8 chaddr[DHCP_CHADDR_MAX], sname[64], file[128];
- u8 options[312];
-};
+#define CONTEXT_STATIC 1
+#define CONTEXT_NETMASK 2
+#define CONTEXT_BRDCAST 4
+#define CONTEXT_PROXY 8
+#define CONTEXT_RA_ONLY 16
+#define CONTEXT_RA_DONE 32
+#define CONTEXT_RA_NAME 64
+#define CONTEXT_RA_STATELESS 128
+#define CONTEXT_DHCP 256
+#define CONTEXT_DEPRECATE 512
+#define CONTEXT_TEMPLATE 1024 /* create contexts using addresses */
+#define CONTEXT_CONSTRUCTED 2048
+#define CONTEXT_GC 4096
+#define CONTEXT_RA 8192
+#define CONTEXT_CONF_USED 16384
+#define CONTEXT_USED 32768
struct ping_result {
struct in_addr addr;
time_t time;
+ unsigned int hash;
struct ping_result *next;
};
int sockfd;
time_t timeout;
int backoff;
- unsigned int block, blocksize;
- struct sockaddr_in peer;
- char opt_blocksize, opt_transize;
+ unsigned int block, blocksize, expansion;
+ off_t offset;
+ union mysockaddr peer;
+ char opt_blocksize, opt_transize, netascii, carrylf;
struct tftp_file *file;
struct tftp_transfer *next;
};
+struct addr_list {
+ struct in_addr addr;
+ struct addr_list *next;
+};
+
+struct tftp_prefix {
+ char *interface;
+ char *prefix;
+ struct tftp_prefix *next;
+};
+
+
extern struct daemon {
/* datastuctures representing the command-line and
config file arguments. All set (including defaults)
in option.c */
- unsigned int options;
+ unsigned int options, options2;
struct resolvc default_resolv, *resolv_files;
+ time_t last_resolv;
struct mx_srv_record *mxnames;
- struct txt_record *txt;
+ struct naptr *naptr;
+ struct txt_record *txt, *rr;
struct ptr_record *ptr;
+ struct host_record *host_records, *host_records_tail;
+ struct cname *cnames;
+ struct auth_zone *auth_zones;
struct interface_name *int_names;
char *mxtarget;
char *lease_file;
- char *username, *groupname;
+ char *username, *groupname, *scriptuser;
+ char *luascript;
+ char *authserver, *hostmaster;
+ struct iname *authinterface;
+ struct name_list *secondary_forward_server;
+ int group_set, osport;
char *domain_suffix;
+ struct cond_domain *cond_domain, *synth_domains;
char *runfile;
char *lease_change_command;
- struct iname *if_names, *if_addrs, *if_except, *dhcp_except;
+ struct iname *if_names, *if_addrs, *if_except, *dhcp_except, *auth_peers;
struct bogus_addr *bogus_addr;
struct server *servers;
+ struct ipsets *ipsets;
int log_fac; /* log facility */
char *log_file; /* optional log file */
int max_logs; /* queue limit */
int cachesize, ftabsize;
- int port, query_port;
- unsigned long local_ttl, neg_ttl;
+ int port, query_port, min_port;
+ unsigned long local_ttl, neg_ttl, max_ttl, max_cache_ttl, auth_ttl;
struct hostsfile *addn_hosts;
- struct dhcp_context *dhcp;
+ struct dhcp_context *dhcp, *dhcp6;
struct dhcp_config *dhcp_conf;
- struct dhcp_opt *dhcp_opts;
+ struct dhcp_opt *dhcp_opts, *dhcp_match, *dhcp_opts6, *dhcp_match6;
struct dhcp_vendor *dhcp_vendors;
struct dhcp_mac *dhcp_macs;
struct dhcp_boot *boot_config;
- struct dhcp_netid_list *dhcp_ignore, *dhcp_ignore_names, *force_broadcast;
- char *dhcp_hosts_file, *dhcp_opts_file;
+ struct pxe_service *pxe_services;
+ struct tag_if *tag_if;
+ struct addr_list *override_relays;
+ int override;
+ int enable_pxe;
+ int doing_ra, doing_dhcp6;
+ struct dhcp_netid_list *dhcp_ignore, *dhcp_ignore_names, *dhcp_gen_names;
+ struct dhcp_netid_list *force_broadcast, *bootp_dynamic;
+ struct hostsfile *dhcp_hosts_file, *dhcp_opts_file;
int dhcp_max, tftp_max;
+ int dhcp_server_port, dhcp_client_port;
int start_tftp_port, end_tftp_port;
unsigned int min_leasetime;
struct doctor *doctors;
unsigned short edns_pktsz;
char *tftp_prefix;
+ struct tftp_prefix *if_prefix; /* per-interface TFTP prefixes */
+ unsigned int duid_enterprise, duid_config_len;
+ unsigned char *duid_config;
+ char *dbus_name;
+ unsigned long soa_sn, soa_refresh, soa_retry, soa_expiry;
+#ifdef OPTION6_PREFIX_CLASS
+ struct prefix_class *prefix_classes;
+#endif
/* globally used stuff for DNS */
char *packet; /* packet buffer */
int packet_buff_sz; /* size of above */
char *namebuff; /* MAXDNAME size buffer */
unsigned int local_answer, queries_forwarded;
+ struct frec *frec_list;
struct serverfd *sfds;
struct irec *interfaces;
struct listener *listeners;
struct server *last_server;
+ time_t forwardtime;
+ int forwardcount;
struct server *srv_save; /* Used for resend on DoD */
size_t packet_len; /* " " */
+ struct randfd *rfd_save; /* " " */
pid_t tcp_pids[MAX_PROCS];
-
+ struct randfd randomsocks[RANDOM_SOCKS];
+ int v6pktinfo;
+
/* DHCP state */
- int dhcpfd, helperfd;
-#ifdef HAVE_LINUX_NETWORK
+ int dhcpfd, helperfd, pxefd;
+#if defined(HAVE_LINUX_NETWORK)
int netlinkfd;
-#else
+#elif defined(HAVE_BSD_NETWORK)
int dhcp_raw_fd, dhcp_icmp_fd;
#endif
struct iovec dhcp_packet;
- char *dhcp_buff, *dhcp_buff2;
+ char *dhcp_buff, *dhcp_buff2, *dhcp_buff3;
struct ping_result *ping_results;
FILE *lease_stream;
-#if defined(__FreeBSD__) || defined(__DragonFly__)
struct dhcp_bridge *bridges;
+#ifdef HAVE_DHCP6
+ int duid_len;
+ unsigned char *duid;
+ struct iovec outpacket;
+ int dhcp6fd, icmp6fd;
#endif
-
/* DBus stuff */
/* void * here to avoid depending on dbus headers outside dbus.c */
void *dbus;
#endif
/* TFTP stuff */
- struct tftp_transfer *tftp_trans;
+ struct tftp_transfer *tftp_trans, *tftp_done_trans;
+
+ /* utility string buffer, hold max sized IP address as string */
+ char *addrbuff;
} *daemon;
/* cache.c */
void cache_init(void);
-void log_query(unsigned short flags, char *name, struct all_addr *addr,
- unsigned short type, struct hostsfile *addn_hosts, int index);
+void log_query(unsigned int flags, char *name, struct all_addr *addr, char *arg);
+char *record_source(int index);
+void querystr(char *desc, char *str, unsigned short type);
struct crec *cache_find_by_addr(struct crec *crecp,
struct all_addr *addr, time_t now,
unsigned short prot);
void cache_start_insert(void);
struct crec *cache_insert(char *name, struct all_addr *addr,
time_t now, unsigned long ttl, unsigned short flags);
-void cache_reload(int opts, char *buff, char *domain_suffix, struct hostsfile *addn_hosts);
-void cache_add_dhcp_entry(char *host_name, struct in_addr *host_address, time_t ttd);
+void cache_reload(void);
+void cache_add_dhcp_entry(char *host_name, int prot, struct all_addr *host_address, time_t ttd);
+struct in_addr a_record_from_hosts(char *name, time_t now);
void cache_unhash_dhcp(void);
void dump_cache(time_t now);
char *cache_get_name(struct crec *crecp);
+struct crec *cache_enumerate(int init);
+#ifdef HAVE_DNSSEC
+struct keydata *keydata_alloc(char *data, size_t len);
+void keydata_free(struct keydata *blocks);
+#endif
+
+/* domain.c */
+char *get_domain(struct in_addr addr);
+#ifdef HAVE_IPV6
+char *get_domain6(struct in6_addr *addr);
+#endif
+int is_name_synthetic(int flags, char *name, struct all_addr *addr);
+int is_rev_synth(int flag, struct all_addr *addr, char *name);
/* rfc1035.c */
-unsigned short extract_request(HEADER *header, size_t qlen,
+unsigned int extract_request(struct dns_header *header, size_t qlen,
char *name, unsigned short *typep);
-size_t setup_reply(HEADER *header, size_t qlen,
- struct all_addr *addrp, unsigned short flags,
+size_t setup_reply(struct dns_header *header, size_t qlen,
+ struct all_addr *addrp, unsigned int flags,
unsigned long local_ttl);
-int extract_addresses(HEADER *header, size_t qlen, char *namebuff, time_t now);
-size_t answer_request(HEADER *header, char *limit, size_t qlen,
+int extract_addresses(struct dns_header *header, size_t qlen, char *namebuff,
+ time_t now, char **ipsets, int is_sign, int checkrebind,
+ int checking_disabled);
+size_t answer_request(struct dns_header *header, char *limit, size_t qlen,
struct in_addr local_addr, struct in_addr local_netmask, time_t now);
-int check_for_bogus_wildcard(HEADER *header, size_t qlen, char *name,
+int check_for_bogus_wildcard(struct dns_header *header, size_t qlen, char *name,
struct bogus_addr *addr, time_t now);
-unsigned char *find_pseudoheader(HEADER *header, size_t plen,
+unsigned char *find_pseudoheader(struct dns_header *header, size_t plen,
size_t *len, unsigned char **p, int *is_sign);
int check_for_local_domain(char *name, time_t now);
-unsigned int questions_crc(HEADER *header, size_t plen, char *buff);
-size_t resize_packet(HEADER *header, size_t plen,
+unsigned int questions_crc(struct dns_header *header, size_t plen, char *buff);
+size_t resize_packet(struct dns_header *header, size_t plen,
unsigned char *pheader, size_t hlen);
+size_t add_mac(struct dns_header *header, size_t plen, char *limit, union mysockaddr *l3);
+int add_resource_record(struct dns_header *header, char *limit, int *truncp,
+ int nameoffset, unsigned char **pp, unsigned long ttl,
+ int *offset, unsigned short type, unsigned short class, char *format, ...);
+unsigned char *skip_questions(struct dns_header *header, size_t plen);
+int extract_name(struct dns_header *header, size_t plen, unsigned char **pp,
+ char *name, int isExtract, int extrabytes);
+int in_arpa_name_2_addr(char *namein, struct all_addr *addrp);
+
+/* auth.c */
+#ifdef HAVE_AUTH
+size_t answer_auth(struct dns_header *header, char *limit, size_t qlen, time_t now, union mysockaddr *peer_addr);
+#endif
/* util.c */
+void rand_init(void);
unsigned short rand16(void);
-int legal_char(char c);
-int canonicalise(char *s);
+int legal_hostname(char *c);
+char *canonicalise(char *s, int *nomem);
unsigned char *do_rfc1035_name(unsigned char *p, char *sval);
void *safe_malloc(size_t size);
+void safe_pipe(int *fd, int read_noblock);
void *whine_malloc(size_t size);
int sa_len(union mysockaddr *addr);
int sockaddr_isequal(union mysockaddr *s1, union mysockaddr *s2);
-int hostname_isequal(char *a, char *b);
+int hostname_isequal(const char *a, const char *b);
time_t dnsmasq_time(void);
int is_same_net(struct in_addr a, struct in_addr b, struct in_addr mask);
+#ifdef HAVE_IPV6
+int is_same_net6(struct in6_addr *a, struct in6_addr *b, int prefixlen);
+u64 addr6part(struct in6_addr *addr);
+void setaddr6part(struct in6_addr *addr, u64 host);
+#endif
int retry_send(void);
void prettyprint_time(char *buf, unsigned int t);
int prettyprint_addr(union mysockaddr *addr, char *buf);
void bump_maxfd(int fd, int *max);
int read_write(int fd, unsigned char *packet, int size, int rw);
+int wildcard_match(const char* wildcard, const char* match);
+
/* log.c */
void die(char *message, char *arg1, int exit_code);
-void log_start(struct passwd *ent_pw);
+int log_start(struct passwd *ent_pw, int errfd);
int log_reopen(char *log_file);
void my_syslog(int priority, const char *format, ...);
void set_log_writer(fd_set *set, int *maxfdp);
/* option.c */
void read_opts (int argc, char **argv, char *compile_opts);
-char *option_string(unsigned char opt);
+char *option_string(int prot, unsigned int opt, unsigned char *val,
+ int opt_len, char *buf, int buf_len);
void reread_dhcp(void);
+void set_option_bool(unsigned int opt);
+void reset_option_bool(unsigned int opt);
+struct hostsfile *expand_filelist(struct hostsfile *list);
+char *parse_server(char *arg, union mysockaddr *addr,
+ union mysockaddr *source_addr, char *interface, int *flags);
/* forward.c */
-void reply_query(struct serverfd *sfd, time_t now);
+void reply_query(int fd, int family, time_t now);
void receive_query(struct listener *listen, time_t now);
unsigned char *tcp_request(int confd, time_t now,
- struct in_addr local_addr, struct in_addr netmask);
+ union mysockaddr *local_addr, struct in_addr netmask, int auth_dns);
void server_gone(struct server *server);
struct frec *get_new_frec(time_t now, int *wait);
+int send_from(int fd, int nowild, char *packet, size_t len,
+ union mysockaddr *to, struct all_addr *source,
+ unsigned int iface);
/* network.c */
+int indextoname(int fd, int index, char *name);
int local_bind(int fd, union mysockaddr *addr, char *intname, int is_tcp);
+int random_sock(int family);
void pre_allocate_sfds(void);
int reload_servers(char *fname);
void check_servers(void);
int enumerate_interfaces();
-struct listener *create_wildcard_listeners(void);
-struct listener *create_bound_listeners(void);
-int iface_check(int family, struct all_addr *addr,
- struct ifreq *ifr, int *indexp);
+void create_wildcard_listeners(void);
+void create_bound_listeners(int die);
+int is_dad_listeners(void);
+int iface_check(int family, struct all_addr *addr, char *name, int *auth_dns);
+int loopback_exception(int fd, int family, struct all_addr *addr, char *name);
int fix_fd(int fd);
+int tcp_interface(int fd, int af);
struct in_addr get_ifaddr(char *intr);
+#ifdef HAVE_IPV6
+int set_ipv6pktinfo(int fd);
+#endif
+#ifdef HAVE_DHCP6
+void join_multicast(int dienow);
+#endif
/* dhcp.c */
+#ifdef HAVE_DHCP
void dhcp_init(void);
-void dhcp_packet(time_t now);
-
+void dhcp_packet(time_t now, int pxe_fd);
struct dhcp_context *address_available(struct dhcp_context *context,
struct in_addr addr,
struct dhcp_netid *netids);
struct dhcp_context *narrow_context(struct dhcp_context *context,
struct in_addr taddr,
struct dhcp_netid *netids);
-int match_netid(struct dhcp_netid *check, struct dhcp_netid *pool, int negonly);
int address_allocate(struct dhcp_context *context,
struct in_addr *addrp, unsigned char *hwaddr, int hw_len,
struct dhcp_netid *netids, time_t now);
+int config_has_mac(struct dhcp_config *config, unsigned char *hwaddr, int len, int type);
struct dhcp_config *find_config(struct dhcp_config *configs,
struct dhcp_context *context,
unsigned char *clid, int clid_len,
unsigned char *hwaddr, int hw_len,
int hw_type, char *hostname);
-void dhcp_update_configs(struct dhcp_config *configs);
void dhcp_read_ethers(void);
-void check_dhcp_hosts(int fatal);
struct dhcp_config *config_find_by_address(struct dhcp_config *configs, struct in_addr addr);
-char *strip_hostname(char *hostname);
char *host_from_dns(struct in_addr addr);
+#endif
/* lease.c */
+#ifdef HAVE_DHCP
void lease_update_file(time_t now);
-void lease_update_dns();
+void lease_update_dns(int force);
void lease_init(time_t now);
-struct dhcp_lease *lease_allocate(struct in_addr addr);
+struct dhcp_lease *lease4_allocate(struct in_addr addr);
+#ifdef HAVE_DHCP6
+struct dhcp_lease *lease6_allocate(struct in6_addr *addrp, int lease_type);
+struct dhcp_lease *lease6_find(unsigned char *clid, int clid_len,
+ int lease_type, int iaid, struct in6_addr *addr);
+void lease6_reset(void);
+struct dhcp_lease *lease6_find_by_client(struct dhcp_lease *first, int lease_type, unsigned char *clid, int clid_len, int iaid);
+struct dhcp_lease *lease6_find_by_addr(struct in6_addr *net, int prefix, u64 addr);
+u64 lease_find_max_addr6(struct dhcp_context *context);
+void lease_ping_reply(struct in6_addr *sender, unsigned char *packet, char *interface);
+void lease_update_slaac(time_t now);
+#endif
void lease_set_hwaddr(struct dhcp_lease *lease, unsigned char *hwaddr,
- unsigned char *clid, int hw_len, int hw_type, int clid_len);
-void lease_set_hostname(struct dhcp_lease *lease, char *name,
- char *suffix, int auth);
+ unsigned char *clid, int hw_len, int hw_type, int clid_len, time_t now, int force);
+void lease_set_hostname(struct dhcp_lease *lease, char *name, int auth, char *domain, char *config_domain);
void lease_set_expires(struct dhcp_lease *lease, unsigned int len, time_t now);
-void lease_set_interface(struct dhcp_lease *lease, int interface);
+void lease_set_interface(struct dhcp_lease *lease, int interface, time_t now);
struct dhcp_lease *lease_find_by_client(unsigned char *hwaddr, int hw_len, int hw_type,
unsigned char *clid, int clid_len);
struct dhcp_lease *lease_find_by_addr(struct in_addr addr);
+struct in_addr lease_find_max_addr(struct dhcp_context *context);
void lease_prune(struct dhcp_lease *target, time_t now);
void lease_update_from_configs(void);
int do_script_run(time_t now);
void rerun_scripts(void);
+void lease_find_interfaces(time_t now);
+#ifdef HAVE_SCRIPT
+void lease_add_extradata(struct dhcp_lease *lease, unsigned char *data,
+ unsigned int len, int delim);
+#endif
+#endif
/* rfc2131.c */
+#ifdef HAVE_DHCP
size_t dhcp_reply(struct dhcp_context *context, char *iface_name, int int_index,
- size_t sz, time_t now, int unicast_dest, int *is_inform);
+ size_t sz, time_t now, int unicast_dest, int *is_inform, int pxe_fd, struct in_addr fallback);
+unsigned char *extended_hwaddr(int hwtype, int hwlen, unsigned char *hwaddr,
+ int clid_len, unsigned char *clid, int *len_out);
+#endif
/* dnsmasq.c */
+#ifdef HAVE_DHCP
int make_icmp_sock(void);
int icmp_ping(struct in_addr addr);
-void send_event(int fd, int event, int data);
-void clear_cache_and_reload(time_t now);
-
-/* isc.c */
-#ifdef HAVE_ISC_READER
-void load_dhcp(time_t now);
#endif
+void send_alarm(time_t event, time_t now);
+void send_event(int fd, int event, int data, char *msg);
+void clear_cache_and_reload(time_t now);
+void poll_resolv(int force, int do_reload, time_t now);
/* netlink.c */
#ifdef HAVE_LINUX_NETWORK
void netlink_init(void);
-void netlink_multicast(void);
+void netlink_multicast(time_t now);
#endif
/* bpf.c */
#endif
/* bpf.c or netlink.c */
-int iface_enumerate(void *parm, int (*ipv4_callback)(), int (*ipv6_callback)());
+int iface_enumerate(int family, void *parm, int (callback)());
/* dbus.c */
#ifdef HAVE_DBUS
char *dbus_init(void);
void check_dbus_listeners(fd_set *rset, fd_set *wset, fd_set *eset);
void set_dbus_listeners(int *maxfdp, fd_set *rset, fd_set *wset, fd_set *eset);
+# ifdef HAVE_DHCP
+void emit_dbus_signal(int action, struct dhcp_lease *lease, char *hostname);
+# endif
+#endif
+
+/* ipset.c */
+#ifdef HAVE_IPSET
+void ipset_init(void);
+int add_to_ipset(const char *setname, const struct all_addr *ipaddr, int flags, int remove);
#endif
/* helper.c */
-#ifndef NO_FORK
-int create_helper(int log_fd, long max_fd);
+#if defined(HAVE_SCRIPT)
+int create_helper(int event_fd, int err_fd, uid_t uid, gid_t gid, long max_fd);
void helper_write(void);
void queue_script(int action, struct dhcp_lease *lease,
char *hostname, time_t now);
+#ifdef HAVE_TFTP
+void queue_tftp(off_t file_len, char *filename, union mysockaddr *peer);
+#endif
int helper_buf_empty(void);
#endif
#ifdef HAVE_TFTP
void tftp_request(struct listener *listen, time_t now);
void check_tftp_listeners(fd_set *rset, time_t now);
+int do_tftp_script_run(void);
+#endif
+
+/* conntrack.c */
+#ifdef HAVE_CONNTRACK
+int get_incoming_mark(union mysockaddr *peer_addr, struct all_addr *local_addr,
+ int istcp, unsigned int *markp);
+#endif
+
+/* dhcp6.c */
+#ifdef HAVE_DHCP6
+void dhcp6_init(void);
+void dhcp6_packet(time_t now);
+struct dhcp_context *address6_allocate(struct dhcp_context *context, unsigned char *clid, int clid_len,
+ int iaid, int serial, struct dhcp_netid *netids, int plain_range, struct in6_addr *ans);
+int config_valid(struct dhcp_config *config, struct dhcp_context *context, struct in6_addr *addr);
+struct dhcp_context *address6_available(struct dhcp_context *context,
+ struct in6_addr *taddr,
+ struct dhcp_netid *netids,
+ int plain_range);
+struct dhcp_context *address6_valid(struct dhcp_context *context,
+ struct in6_addr *taddr,
+ struct dhcp_netid *netids,
+ int plain_range);
+struct dhcp_config *find_config6(struct dhcp_config *configs,
+ struct dhcp_context *context,
+ unsigned char *duid, int duid_len,
+ char *hostname);
+struct dhcp_config *config_find_by_address6(struct dhcp_config *configs, struct in6_addr *net,
+ int prefix, u64 addr);
+void make_duid(time_t now);
+void dhcp_construct_contexts(time_t now);
+#endif
+
+/* rfc3315.c */
+#ifdef HAVE_DHCP6
+unsigned short dhcp6_reply(struct dhcp_context *context, int interface, char *iface_name,
+ struct in6_addr *fallback, size_t sz, int is_multicast, time_t now);
+#endif
+
+/* dhcp-common.c */
+#ifdef HAVE_DHCP
+void dhcp_common_init(void);
+ssize_t recv_dhcp_packet(int fd, struct msghdr *msg);
+struct dhcp_netid *run_tag_if(struct dhcp_netid *input);
+struct dhcp_netid *option_filter(struct dhcp_netid *tags, struct dhcp_netid *context_tags,
+ struct dhcp_opt *opts);
+int match_netid(struct dhcp_netid *check, struct dhcp_netid *pool, int negonly);
+char *strip_hostname(char *hostname);
+void log_tags(struct dhcp_netid *netid, u32 xid);
+int match_bytes(struct dhcp_opt *o, unsigned char *p, int len);
+void dhcp_update_configs(struct dhcp_config *configs);
+void display_opts(void);
+int lookup_dhcp_opt(int prot, char *name);
+int lookup_dhcp_len(int prot, int val);
+char *option_string(int prot, unsigned int opt, unsigned char *val,
+ int opt_len, char *buf, int buf_len);
+#ifdef HAVE_LINUX_NETWORK
+void bindtodevice(int fd);
+#endif
+# ifdef HAVE_DHCP6
+void display_opts6(void);
+# endif
+void log_context(int family, struct dhcp_context *context);
+#endif
+
+/* outpacket.c */
+#ifdef HAVE_DHCP6
+void end_opt6(int container);
+int save_counter(int newval);
+void *expand(size_t headroom);
+int new_opt6(int opt);
+void *put_opt6(void *data, size_t len);
+void put_opt6_long(unsigned int val);
+void put_opt6_short(unsigned int val);
+void put_opt6_char(unsigned int val);
+void put_opt6_string(char *s);
+#endif
+
+/* radv.c */
+#ifdef HAVE_DHCP6
+void ra_init(time_t now);
+void icmp6_packet(time_t now);
+time_t periodic_ra(time_t now);
+void ra_start_unsolicted(time_t now, struct dhcp_context *context);
+#endif
+
+/* slaac.c */
+#ifdef HAVE_DHCP6
+void slaac_add_addrs(struct dhcp_lease *lease, time_t now, int force);
+time_t periodic_slaac(time_t now, struct dhcp_lease *leases);
+void slaac_ping_reply(struct in6_addr *sender, unsigned char *packet, char *interface, struct dhcp_lease *leases);
#endif
projects / people / ms / dnsmasq.git / blobdiff