1#ifndef _RESOLV_H
  2#define _RESOLV_H
  3
  4#include <stdint.h>
  5#include <arpa/nameser.h>
  6#include <netinet/in.h>
  7
  8#ifdef __cplusplus
  9extern "C" {
 10#endif
 11
 12#define MAXNS			3
 13#define MAXDFLSRCH		3
 14#define MAXDNSRCH		6
 15#define LOCALDOMAINPARTS	2
 16
 17#define RES_TIMEOUT		5
 18#define MAXRESOLVSORT		10
 19#define RES_MAXNDOTS		15
 20#define RES_MAXRETRANS		30
 21#define RES_MAXRETRY		5
 22#define RES_DFLRETRY		2
 23#define RES_MAXTIME		65535
 24
 25/* unused; purely for broken apps */
 26typedef struct __res_state {
 27	int retrans;
 28	int retry;
 29	unsigned long options;
 30	int nscount;
 31	struct sockaddr_in nsaddr_list[MAXNS];
 32# define nsaddr	nsaddr_list[0]
 33	unsigned short id;
 34	char *dnsrch[MAXDNSRCH+1];
 35	char defdname[256];
 36	unsigned long pfcode;
 37	unsigned ndots:4;
 38	unsigned nsort:4;
 39	unsigned ipv6_unavail:1;
 40	unsigned unused:23;
 41	struct {
 42		struct in_addr addr;
 43		uint32_t mask;
 44	} sort_list[MAXRESOLVSORT];
 45	void *qhook;
 46	void *rhook;
 47	int res_h_errno;
 48	int _vcsock;
 49	unsigned _flags;
 50	union {
 51		char pad[52];
 52		struct {
 53			uint16_t		nscount;
 54			uint16_t		nsmap[MAXNS];
 55			int			nssocks[MAXNS];
 56			uint16_t		nscount6;
 57			uint16_t		nsinit;
 58			struct sockaddr_in6	*nsaddrs[MAXNS];
 59			unsigned int		_initstamp[2];
 60		} _ext;
 61	} _u;
 62} *res_state;
 63
 64#define	__RES	19960801
 65
 66#ifndef _PATH_RESCONF
 67#define _PATH_RESCONF        "/etc/resolv.conf"
 68#endif
 69
 70struct res_sym {
 71	int number;
 72	char *name;
 73	char *humanname;
 74};
 75
 76#define	RES_F_VC	0x00000001
 77#define	RES_F_CONN	0x00000002
 78#define RES_F_EDNS0ERR	0x00000004
 79
 80#define	RES_EXHAUSTIVE	0x00000001
 81
 82#define RES_INIT	0x00000001
 83#define RES_DEBUG	0x00000002
 84#define RES_AAONLY	0x00000004
 85#define RES_USEVC	0x00000008
 86#define RES_PRIMARY	0x00000010
 87#define RES_IGNTC	0x00000020
 88#define RES_RECURSE	0x00000040
 89#define RES_DEFNAMES	0x00000080
 90#define RES_STAYOPEN	0x00000100
 91#define RES_DNSRCH	0x00000200
 92#define	RES_INSECURE1	0x00000400
 93#define	RES_INSECURE2	0x00000800
 94#define	RES_NOALIASES	0x00001000
 95#define	RES_USE_INET6	0x00002000
 96#define RES_ROTATE	0x00004000
 97#define	RES_NOCHECKNAME	0x00008000
 98#define	RES_KEEPTSIG	0x00010000
 99#define	RES_BLAST	0x00020000
100#define RES_USEBSTRING	0x00040000
101#define RES_NOIP6DOTINT	0x00080000
102#define RES_USE_EDNS0	0x00100000
103#define RES_SNGLKUP	0x00200000
104#define RES_SNGLKUPREOP	0x00400000
105#define RES_USE_DNSSEC	0x00800000
106
107#define RES_DEFAULT	(RES_RECURSE|RES_DEFNAMES|RES_DNSRCH|RES_NOIP6DOTINT)
108
109#define RES_PRF_STATS	0x00000001
110#define RES_PRF_UPDATE	0x00000002
111#define RES_PRF_CLASS   0x00000004
112#define RES_PRF_CMD	0x00000008
113#define RES_PRF_QUES	0x00000010
114#define RES_PRF_ANS	0x00000020
115#define RES_PRF_AUTH	0x00000040
116#define RES_PRF_ADD	0x00000080
117#define RES_PRF_HEAD1	0x00000100
118#define RES_PRF_HEAD2	0x00000200
119#define RES_PRF_TTLID	0x00000400
120#define RES_PRF_HEADX	0x00000800
121#define RES_PRF_QUERY	0x00001000
122#define RES_PRF_REPLY	0x00002000
123#define RES_PRF_INIT	0x00004000
124
125struct __res_state *__res_state(void);
126#define _res (*__res_state())
127
128int res_init(void);
129int res_query(const char *, int, int, unsigned char *, int);
130int res_querydomain(const char *, const char *, int, int, unsigned char *, int);
131int res_search(const char *, int, int, unsigned char *, int);
132int res_mkquery(int, const char *, int, int, const unsigned char *, int, const unsigned char*, unsigned char *, int);
133int res_send(const unsigned char *, int, unsigned char *, int);
134int dn_comp(const char *, unsigned char *, int, unsigned char **, unsigned char **);
135int dn_expand(const unsigned char *, const unsigned char *, const unsigned char *, char *, int);
136int dn_skipname(const unsigned char *, const unsigned char *);
137
138#ifdef __cplusplus
139}
140#endif
141
142#endif