1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
|
#ifndef LOOKUP_H
#define LOOKUP_H
#include <stdint.h>
#include <stddef.h>
#include <features.h>
#include <netinet/in.h>
#include <netdb.h>
struct aibuf {
struct addrinfo ai;
union sa {
struct sockaddr_in sin;
struct sockaddr_in6 sin6;
} sa;
volatile int lock[1];
short slot, ref;
};
struct address {
int family;
unsigned scopeid;
uint8_t addr[16];
int sortkey;
};
struct service {
uint16_t port;
unsigned char proto, socktype;
};
#define MAXNS 3
struct resolvconf {
struct address ns[MAXNS];
unsigned nns, attempts, ndots;
unsigned timeout;
};
/* The limit of 48 results is a non-sharp bound on the number of addresses
* that can fit in one 512-byte DNS packet full of v4 results and a second
* packet full of v6 results. Due to headers, the actual limit is lower. */
#define MAXADDRS 48
#define MAXSERVS 2
hidden int __lookup_serv(struct service buf[static MAXSERVS], const char *name, int proto, int socktype, int flags);
hidden int __lookup_name(struct address buf[static MAXADDRS], char canon[static 256], const char *name, int family, int flags);
hidden int __lookup_ipliteral(struct address buf[static 1], const char *name, int family);
hidden int __get_resolv_conf(struct resolvconf *, char *, size_t);
hidden int __res_msend_rc(int, const unsigned char *const *, const int *, unsigned char *const *, int *, int, const struct resolvconf *);
hidden int __dns_parse(const unsigned char *, int, int (*)(void *, int, const void *, int, const void *), void *);
#endif
|
