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