Libnet is a cross-platform library aimed at game developers. It has an abstract high level API, whic
源代码在线查看： dns.h
/*---------------------------------------------------------------- * dns.h - definitions for the DNS interface in wnsck.c (internal) *---------------------------------------------------------------- * libnet is (c) Copyright Chad Catlett and George Foot 1997-1998 * * Please look in `docs' for details, documentation and * distribution conditions. */ #ifndef _gf_included_dns_h #define _gf_included_dns_h /* DNS RR types */ #define DNS_TYPE_A 1 #define DNS_TYPE_NS 2 #define DNS_TYPE_MD 3 #define DNS_TYPE_MF 4 #define DNS_TYPE_CNAME 5 #define DNS_TYPE_SOA 6 #define DNS_TYPE_MB 7 #define DNS_TYPE_MG 8 #define DNS_TYPE_MR 9 #define DNS_TYPE_NULL 10 #define DNS_TYPE_WKS 11 #define DNS_TYPE_PTR 12 #define DNS_TYPE_HINFO 13 #define DNS_TYPE_MINFO 14 #define DNS_TYPE_MX 15 #define DNS_TYPE_TXT 16 #define DNS_TYPE_AXFR 252 #define DNS_TYPE_MAILB 253 #define DNS_TYPE_MAILA 254 #define DNS_TYPE_ANY 255 /* DNS RR classes */ #define DNS_CLASS_IN 1 #define DNS_CLASS_CS 2 #define DNS_CLASS_CH 3 #define DNS_CLASS_HS 4 #define DNS_CLASS_ANY 255 /* DNS communication port (UDP or TCP) */ #define IPPORT_DNS 53 struct dns_query { char *qname; int qtype,qclass; }; struct dns_rr { char *name; int type,_class,ttl,rdlength; char *rdata; union { struct { long address; } a; struct { char *cname; } cname; struct { char *cpu,*os; } hinfo; struct { char *madname; } mb; struct { char *madname; } md; struct { char *madname; } mf; struct { char *mgmname; } mg; struct { char *rmailbx,*emailbx; } minfo; struct { char *newname; } mr; struct { int preference; char *exchange; } mx; struct { char *nsdname; } ns; struct { char *data; } null; struct { char *ptrdname; } ptr; struct { char *mname,*rname; unsigned serial,refresh,retry,expire,minimum; } soa; struct { char **txt_data; } txt; struct { int address; unsigned char protocol; int bitmapsize; char *bitmap; } wks; } data; }; union dns_flags { unsigned short i; struct { int rd:1; int tc:1; int aa:1; int opcode:4; int qr:1; int rcode:4; int z:3; int ra:1; } f; }; struct dns_packet { int nameserver; int id; union dns_flags flags; int qdcount,ancount,nscount,arcount; struct dns_query *questions; struct dns_rr *answers; struct dns_rr *authorities; struct dns_rr *additionals; }; #endif
