gclib2/include/dns.h

   1 /*
   2  * (c) Oleg Puchinin 2006-2008
   3  * graycardinalster@gmail.com
   4  *
   5  */
   6
   7 #ifndef DEFINE_DNS_H
   8 #define DEFINE_DNS_H
   9
  10 #ifndef DEFINE_GCLIB2_H
  11 #include <gclib2.h>
  12 #endif
  13
  14 #ifndef DEFINE_DNS_INTERNALS_H
  15 struct dns_query;
  16 struct dns_reply;
  17 struct dns_header;
  18 #endif
  19
  20 class DNS
  21 {
  22         public:
  23                 DNS ();
  24                 ~DNS ();
  25
  26                 int init ();
  27                 dns_query * loop () ;
  28                 void set_timeout (int sec) ;
  29                 int get_socket () ;
  30                 void clean () ;
  31                 char * A (char *host) ;
  32                 char * async_A (char *host, dns_query ** qRet = NULL) ;
  33                 char * MX (char *host) ;
  34                 char * async_MX (char *IP, dns_query ** qRet = NULL) ;
  35                 char * ip2name (char *IP) ;
  36                 char * async_ip2name (char *IP, dns_query ** qRet = NULL) ;
  37
  38         private:
  39                 char * bestServer () ;
  40                 dns_query * query_async (uint16_t flags, uint16_t dr_type, uint16_t dr_class, char * host) ;
  41                 List * query_sync(uint16_t flags, uint16_t dr_type, uint16_t dr_class, char * host,
  42                                 char ** d_resp = NULL, int *d_resp_len = NULL) ;
  43                 dns_reply * scan (List *list, uint16_t dr_type, uint16_t dr_class) ;
  44                 __dlist_entry_t * inquiries_scan (char * host, uint16_t dr_type, uint16_t dr_class) ;
  45                 dns_reply * bestMXReply (List * list) ;
  46                 char * __name2dns (char *name, int *len) ;
  47                 char * __ddup (char * ptr, unsigned char ch) ;
  48                 char * __dns_rd_chunk (DPBuf * p, char ** ptr, char * done) ;
  49                 char * __dns_resp_domain (DPBuf * p, char * domain, char **domain_end) ;
  50                 char * make_dns_pkt (uint16_t id, uint16_t flags, uint16_t d_type,
  51                                 uint16_t d_class, char * domain, int *len) ;
  52                 List * resp_split (dns_header *hdr, char *pkt, int len) ;
  53                 void resp_clean (List * list) ;
  54                 char * ip2arpa (char *IP) ;
  55                 void clean_query (dns_query * q) ;
  56
  57                 int dns_sock;
  58                 int dns_last_id;
  59                 int dns_timeout;
  60                 List * dns_servers;
  61                 List * dns_inquiries;
  62 };
  63
  64
  65 __export int dns_init () ;
  66 __export char * dns_A (char *host) ;
  67 __export char * dns_async_A (char *host, dns_query ** qRet = NULL) ;
  68 __export char * dns_MX (char *host) ;
  69 __export char * dns_async_MX (char *IP, dns_query ** qRet = NULL) ;
  70 __export char * dns_ip2name (char *IP) ;
  71 __export char * dns_async_ip2name (char *IP, dns_query ** qRet = NULL) ;
  72 __export void dns_clean () ;
  73 __export int dns_get_socket () ;
  74 dns_query * dns_loop () ;
  75
  76 #endif
  77