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import of dnsmasq-2.21.tar.gz

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This commit is contained in:
Simon Kelley
2005-03-23 20:28:59 +00:00
parent f6b7dc47c7
commit 0a852541d3
21 changed files with 1195 additions and 579 deletions
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114
src/dnsmasq.h
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@@ -79,9 +79,17 @@
#endif
#include <sys/uio.h>
/* Size: we check after adding each record, so there must be
memory for the largest packet, and the largest record */
#define DNSMASQ_PACKETSZ PACKETSZ+MAXDNAME+RRFIXEDSZ
/* Min buffer size: we check after adding each record, so there must be
memory for the largest packet, and the largest record so the
min for DNS is PACKETSZ+MAXDNAME+RRFIXEDSZ which is < 1000.
This might be increased is EDNS packet size if greater than the minimum.
The buffer is also used for NETLINK, which needs to be about 2000
on systems with many interfaces/addresses. */
#ifdef HAVE_RTNETLINK
# define DNSMASQ_PACKETSZ PACKETSZ+MAXDNAME+RRFIXEDSZ
#else
# define DNSMASQ_PACKETSZ 2000
#endif
#define OPT_BOGUSPRIV 1
#define OPT_FILTER 2
@@ -123,16 +131,16 @@ struct doctor {
struct doctor *next;
};
struct mx_record {
char *mxname, *mxtarget;
int preference;
struct mx_record *next;
struct mx_srv_record {
char *name, *target;
int issrv, srvport, priority, weight, offset;
struct mx_srv_record *next;
};
struct srv_record {
char *srvname, *srvtarget;
int srvport, priority, weight;
struct srv_record *next;
struct txt_record {
char *name, *txt;
unsigned short class, len;
struct txt_record *next;
};
union bigname {
@@ -199,14 +207,16 @@ union mysockaddr {
#endif
};
#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_HAS_SOURCE 8 /* source address specified */
#define SERV_HAS_DOMAIN 16 /* server for one domain only */
#define SERV_FOR_NODOTS 32 /* server for names with no domain part only */
#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_HAS_SOURCE 8 /* source address specified */
#define SERV_HAS_DOMAIN 16 /* server for one domain only */
#define SERV_FOR_NODOTS 32 /* server for names with no domain part only */
#define SERV_WARNED_RECURSIVE 64 /* avoid warning spam */
#define SERV_TYPE (SERV_HAS_DOMAIN | SERV_FOR_NODOTS)
struct serverfd {
int fd;
union mysockaddr source_addr;
@@ -263,7 +273,7 @@ struct frec {
struct server *sentto;
unsigned int iface;
unsigned short orig_id, new_id;
int fd;
int fd, forwardall;
unsigned int crc;
time_t time;
struct frec *next;
@@ -296,18 +306,18 @@ struct dhcp_config {
char *hostname;
struct dhcp_netid netid;
struct in_addr addr;
unsigned int lease_time;
unsigned int lease_time, wildcard_mask;
struct dhcp_config *next;
};
#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_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
struct dhcp_opt {
int opt, len, is_addr;
@@ -332,13 +342,20 @@ struct dhcp_vendor {
struct dhcp_context {
unsigned int lease_time, addr_epoch;
struct in_addr netmask, broadcast, router;
struct in_addr netmask, broadcast;
struct in_addr local, router;
struct in_addr start, end; /* range of available addresses */
int static_only, filter_netid;
int flags;
struct dhcp_netid netid;
struct dhcp_context *next, *current;
};
#define CONTEXT_STATIC 1
#define CONTEXT_FILTER 2
#define CONTEXT_NETMASK 4
#define CONTEXT_BRDCAST 8
typedef unsigned char u8;
typedef unsigned short u16;
typedef unsigned int u32;
@@ -370,12 +387,12 @@ struct daemon {
unsigned int options;
struct resolvc default_resolv, *resolv_files;
struct mx_record *mxnames;
struct mx_srv_record *mxnames;
struct txt_record *txt;
char *mxtarget;
char *lease_file;
char *username, *groupname;
char *domain_suffix;
struct srv_record *srvnames;
char *runfile;
struct iname *if_names, *if_addrs, *if_except;
struct bogus_addr *bogus_addr;
@@ -397,6 +414,7 @@ struct daemon {
/* globally used stuff for DNS */
char *packet; /* packet buffer */
int packet_buff_sz; /* size of above */
char *namebuff; /* MAXDNAME size buffer */
struct serverfd *sfds;
struct listener *listeners;
@@ -405,6 +423,9 @@ struct daemon {
/* DHCP state */
int dhcpfd, dhcp_raw_fd, dhcp_icmp_fd, lease_fd;
#ifdef HAVE_RTNETLINK
int netlinkfd;
#endif
struct udp_dhcp_packet *dhcp_packet;
char *dhcp_buff, *dhcp_buff2;
};
@@ -443,7 +464,7 @@ int check_for_bogus_wildcard(HEADER *header, unsigned int qlen, char *name,
unsigned char *find_pseudoheader(HEADER *header, unsigned int plen,
unsigned int *len, unsigned char **p);
int check_for_local_domain(char *name, time_t now, struct daemon *daemon);
unsigned int questions_crc(HEADER *header, unsigned int plen);
unsigned int questions_crc(HEADER *header, unsigned int plen, char *buff);
int resize_packet(HEADER *header, unsigned int plen,
unsigned char *pheader, unsigned int hlen);
@@ -453,8 +474,8 @@ int legal_char(char c);
int canonicalise(char *s);
int atoi_check(char *a, int *res);
void die(char *message, char *arg1);
void complain(char *message, char *arg1);
void *safe_malloc(int size);
void complain(char *message, int lineno, char *file);
void *safe_malloc(size_t size);
char *safe_string_alloc(char *cp);
int sa_len(union mysockaddr *addr);
int sockaddr_isequal(union mysockaddr *s1, union mysockaddr *s2);
@@ -462,6 +483,9 @@ int hostname_isequal(unsigned char *a, unsigned char *b);
time_t dnsmasq_time(int fd);
int is_same_net(struct in_addr a, struct in_addr b, struct in_addr mask);
int retry_send(void);
void prettyprint_time(char *buf, unsigned int t);
int parse_hex(char *in, unsigned char *out, int maxlen,
unsigned int *wildcard_mask);
/* option.c */
struct daemon *read_opts (int argc, char **argv);
@@ -501,22 +525,29 @@ void dhcp_read_ethers(struct daemon *daemon);
struct dhcp_config *config_find_by_address(struct dhcp_config *configs, struct in_addr addr);
char *strip_hostname(struct daemon *daemon, char *hostname);
char *host_from_dns(struct daemon *daemon, struct in_addr addr);
struct dhcp_context *complete_context(struct daemon *daemon, struct in_addr local,
struct dhcp_context *current, struct in_addr netmask,
struct in_addr broadcast, struct in_addr relay,
struct in_addr primary);
/* lease.c */
void lease_update_file(int force, time_t now);
void lease_update_dns(struct daemon *daemon);
void lease_init(struct daemon *daemon, time_t now);
struct dhcp_lease *lease_allocate(unsigned char *clid, int clid_len, struct in_addr addr);
void lease_set_hwaddr(struct dhcp_lease *lease, unsigned char *hwaddr);
struct dhcp_lease *lease_allocate(unsigned char *hwaddr, unsigned char *clid,
int clid_len, struct in_addr addr);
int lease_set_hwaddr(struct dhcp_lease *lease, unsigned char *hwaddr,
unsigned char *clid, int clid_len);
void lease_set_hostname(struct dhcp_lease *lease, char *name, char *suffix);
void lease_set_expires(struct dhcp_lease *lease, time_t exp);
struct dhcp_lease *lease_find_by_client(unsigned char *clid, int clid_len);
struct dhcp_lease *lease_find_by_client(unsigned char *hwaddr,
unsigned char *clid, int clid_len);
struct dhcp_lease *lease_find_by_addr(struct in_addr addr);
void lease_prune(struct dhcp_lease *target, time_t now);
void lease_update_from_configs(struct dhcp_config *dhcp_configs, char *domain);
/* rfc2131.c */
int dhcp_reply(struct daemon *daemon, struct in_addr iface_addr, char *iface_name, unsigned int sz, time_t now);
int dhcp_reply(struct daemon *daemon, struct dhcp_context *context, char *iface_name, unsigned int sz, time_t now);
/* dnsmasq.c */
int icmp_ping(struct daemon *daemon, struct in_addr addr);
@@ -526,3 +557,10 @@ int icmp_ping(struct daemon *daemon, struct in_addr addr);
void load_dhcp(struct daemon *daemon, time_t now);
#endif
/* netlink.c */
#ifdef HAVE_RTNETLINK
int netlink_init(void);
int netlink_process(struct daemon *daemon, int index,
struct in_addr relay, struct in_addr primary,
struct dhcp_context **retp);
#endif