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
143