resolv.h raw
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
9 extern "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 */
26 typedef 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
70 struct 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
125 struct __res_state *__res_state(void);
126 #define _res (*__res_state())
127
128 int res_init(void);
129 int res_query(const char *, int, int, unsigned char *, int);
130 int res_querydomain(const char *, const char *, int, int, unsigned char *, int);
131 int res_search(const char *, int, int, unsigned char *, int);
132 int res_mkquery(int, const char *, int, int, const unsigned char *, int, const unsigned char*, unsigned char *, int);
133 int res_send(const unsigned char *, int, unsigned char *, int);
134 int dn_comp(const char *, unsigned char *, int, unsigned char **, unsigned char **);
135 int dn_expand(const unsigned char *, const unsigned char *, const unsigned char *, char *, int);
136 int dn_skipname(const unsigned char *, const unsigned char *);
137
138 #ifdef __cplusplus
139 }
140 #endif
141
142 #endif
143