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c8fdcfe550
the value 19991006 for __RES implies availability of res_ninit and related functions that take a resolver state argument; these are not supported since our resolver is stateless. instead claim support for just the older API by defining __RES to 19960801. based on patch by Dmitrij D. Czarkoff.
143 lines
3.5 KiB
C
143 lines
3.5 KiB
C
#ifndef _RESOLV_H
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#define _RESOLV_H
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#include <stdint.h>
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#include <arpa/nameser.h>
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#include <netinet/in.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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#define MAXNS 3
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#define MAXDFLSRCH 3
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#define MAXDNSRCH 6
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#define LOCALDOMAINPARTS 2
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#define RES_TIMEOUT 5
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#define MAXRESOLVSORT 10
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#define RES_MAXNDOTS 15
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#define RES_MAXRETRANS 30
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#define RES_MAXRETRY 5
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#define RES_DFLRETRY 2
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#define RES_MAXTIME 65535
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/* unused; purely for broken apps */
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typedef struct __res_state {
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int retrans;
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int retry;
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unsigned long options;
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int nscount;
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struct sockaddr_in nsaddr_list[MAXNS];
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# define nsaddr nsaddr_list[0]
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unsigned short id;
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char *dnsrch[MAXDNSRCH+1];
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char defdname[256];
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unsigned long pfcode;
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unsigned ndots:4;
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unsigned nsort:4;
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unsigned ipv6_unavail:1;
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unsigned unused:23;
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struct {
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struct in_addr addr;
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uint32_t mask;
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} sort_list[MAXRESOLVSORT];
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void *qhook;
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void *rhook;
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int res_h_errno;
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int _vcsock;
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unsigned _flags;
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union {
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char pad[52];
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struct {
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uint16_t nscount;
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uint16_t nsmap[MAXNS];
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int nssocks[MAXNS];
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uint16_t nscount6;
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uint16_t nsinit;
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struct sockaddr_in6 *nsaddrs[MAXNS];
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unsigned int _initstamp[2];
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} _ext;
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} _u;
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} *res_state;
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#define __RES 19960801
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#ifndef _PATH_RESCONF
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#define _PATH_RESCONF "/etc/resolv.conf"
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#endif
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struct res_sym {
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int number;
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char *name;
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char *humanname;
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};
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#define RES_F_VC 0x00000001
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#define RES_F_CONN 0x00000002
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#define RES_F_EDNS0ERR 0x00000004
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#define RES_EXHAUSTIVE 0x00000001
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#define RES_INIT 0x00000001
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#define RES_DEBUG 0x00000002
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#define RES_AAONLY 0x00000004
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#define RES_USEVC 0x00000008
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#define RES_PRIMARY 0x00000010
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#define RES_IGNTC 0x00000020
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#define RES_RECURSE 0x00000040
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#define RES_DEFNAMES 0x00000080
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#define RES_STAYOPEN 0x00000100
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#define RES_DNSRCH 0x00000200
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#define RES_INSECURE1 0x00000400
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#define RES_INSECURE2 0x00000800
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#define RES_NOALIASES 0x00001000
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#define RES_USE_INET6 0x00002000
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#define RES_ROTATE 0x00004000
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#define RES_NOCHECKNAME 0x00008000
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#define RES_KEEPTSIG 0x00010000
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#define RES_BLAST 0x00020000
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#define RES_USEBSTRING 0x00040000
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#define RES_NOIP6DOTINT 0x00080000
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#define RES_USE_EDNS0 0x00100000
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#define RES_SNGLKUP 0x00200000
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#define RES_SNGLKUPREOP 0x00400000
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#define RES_USE_DNSSEC 0x00800000
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#define RES_DEFAULT (RES_RECURSE|RES_DEFNAMES|RES_DNSRCH|RES_NOIP6DOTINT)
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#define RES_PRF_STATS 0x00000001
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#define RES_PRF_UPDATE 0x00000002
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#define RES_PRF_CLASS 0x00000004
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#define RES_PRF_CMD 0x00000008
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#define RES_PRF_QUES 0x00000010
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#define RES_PRF_ANS 0x00000020
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#define RES_PRF_AUTH 0x00000040
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#define RES_PRF_ADD 0x00000080
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#define RES_PRF_HEAD1 0x00000100
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#define RES_PRF_HEAD2 0x00000200
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#define RES_PRF_TTLID 0x00000400
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#define RES_PRF_HEADX 0x00000800
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#define RES_PRF_QUERY 0x00001000
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#define RES_PRF_REPLY 0x00002000
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#define RES_PRF_INIT 0x00004000
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struct __res_state *__res_state(void);
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#define _res (*__res_state())
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int res_init(void);
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int res_query(const char *, int, int, unsigned char *, int);
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int res_querydomain(const char *, const char *, int, int, unsigned char *, int);
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int res_search(const char *, int, int, unsigned char *, int);
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int res_mkquery(int, const char *, int, int, const unsigned char *, int, const unsigned char*, unsigned char *, int);
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int res_send(const unsigned char *, int, unsigned char *, int);
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int dn_comp(const char *, unsigned char *, int, unsigned char **, unsigned char **);
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int dn_expand(const unsigned char *, const unsigned char *, const unsigned char *, char *, int);
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int dn_skipname(const unsigned char *, const unsigned char *);
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#ifdef __cplusplus
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}
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#endif
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#endif
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