include/resolv.h

   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