mdw@git.distorted.org.uk Git - adns/blob - src/adns-internal.h

   1 /**/
   2
   3 #ifndef ADNS_INTERNAL_H_INCLUDED
   4 #define ADNS_INTERNAL_H_INCLUDED
   5
   6 #include <sys/time.h>
   7
   8 #include "adns.h"
   9
  10 #define MAXSERVERS 5
  11 #define MAXUDPRETRIES 15
  12 #define UDPRETRYMS 2000
  13 #define TCPMS 30000
  14 #define LOCALRESOURCEMS 20
  15
  16 union adns__align {
  17   adns_status status;
  18   char *cp;
  19   adns_rrtype type;
  20   int int;
  21   struct in_addr ia;
  22   unsigned long ul;
  23 };
  24
  25 struct adns__query {
  26   /* FIXME: make sure this is all init'd properly */
  27   adns_query back, next;
  28   adns_query parent;
  29   struct { adns_query head, tail; } children;
  30   struct { adns_query back, next; } siblings;
  31   adns_rrtype type;
  32   adns_answer *answer;
  33   size_t ansalloc; ansused;
  34   int id, flags, udpretries; /* udpretries==-1 => _f_usevc or too big for UDP */
  35   int nextudpserver;
  36   unsigned long sentudp, senttcp; /* bitmaps indexed by server */
  37   struct timeval timeout;
  38   void *context;
  39   unsigned char *querymsg;
  40   int querylen;
  41   char owner[1];
  42   /* Possible states:
  43    *  Queue   child  id   answer    nextserver  sentudp             senttcp
  44    *  tosend  null   >=0  null      any         any                 any
  45    *  timew   null   >=0  null      any         at least 1 bit set  any
  46    *  childw  set    >=0  partial   any         any                 any
  47    *  output  null   -1   set/null  any         any                 any
  48    */
  49 };
  50
  51 struct adns__vbuf {
  52   size_t used, avail;
  53   unsigned char *buf;
  54 };
  55
  56 struct adns__state {
  57   /* FIXME: make sure this is all init'd properly */
  58   adns_initflags iflags;
  59   struct { adns_query head, tail; } tosend, timew, childw, output;
  60   int nextid, udpsocket;
  61   adns_vbuf rqbuf, tcpsend, tcprecv;
  62   int nservers, tcpserver;
  63   enum adns__tcpstate { server_disc, server_connecting, server_ok } tcpstate;
  64   int tcpsocket;
  65   struct timeval tcptimeout;
  66   struct server {
  67     struct in_addr addr;
  68   } servers[MAXSERVERS];
  69 };
  70
  71 #endif