cosmopolitan/third_party/musl/lookup.internal.h

#ifndef COSMOPOLITAN_THIRD_PARTY_MUSL_LOOKUP_INTERNAL_H_
#define COSMOPOLITAN_THIRD_PARTY_MUSL_LOOKUP_INTERNAL_H_
#include "libc/sock/struct/sockaddr6.h"
#include "third_party/musl/netdb.h"
#include "libc/sock/struct/sockaddr.h"
COSMOPOLITAN_C_START_

struct aibuf {
	struct addrinfo ai;
	union sa {
		struct sockaddr_in sin;
		struct sockaddr_in6 sin6;
	} sa;
	int slot;
        _Atomic(int) 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

int __lookup_serv(struct service buf[static MAXSERVS], const char *name, int proto, int socktype, int flags);
int __lookup_name(struct address buf[static MAXADDRS], char canon[static 256], const char *name, int family, int flags);
int __lookup_ipliteral(struct address buf[static 1], const char *name, int family);
int __get_resolv_conf(struct resolvconf *, char *, size_t);
int __res_msend_rc(int, const unsigned char *const *, const int *, unsigned char *const *, int *, int, const struct resolvconf *);
int __dns_parse(const unsigned char *, int, int (*)(void *, int, const void *, int, const void *, int), void *);

COSMOPOLITAN_C_END_
#endif /* COSMOPOLITAN_THIRD_PARTY_MUSL_LOOKUP_INTERNAL_H_ */