lib/liblwres/context_p.h

   1 /*
   2  * Copyright (C) 2000, 2001  Internet Software Consortium.
   3  *
   4  * Permission to use, copy, modify, and distribute this software for any
   5  * purpose with or without fee is hereby granted, provided that the above
   6  * copyright notice and this permission notice appear in all copies.
   7  *
   8  * THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM
   9  * DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL
  10  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL
  11  * INTERNET SOFTWARE CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT,
  12  * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING
  13  * FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
  14  * NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
  15  * WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  16  */
  17
  18 /* $Id: context_p.h,v 1.1 2004/03/15 20:35:25 as Exp $ */
  19
  20 #ifndef LWRES_CONTEXT_P_H
  21 #define LWRES_CONTEXT_P_H 1
  22
  23 /*
  24  * Helper functions, assuming the context is always called "ctx" in
  25  * the scope these functions are called from.
  26  */
  27 #define CTXMALLOC(len)          ctx->malloc(ctx->arg, (len))
  28 #define CTXFREE(addr, len)      ctx->free(ctx->arg, (addr), (len))
  29
  30 #define LWRES_DEFAULT_TIMEOUT   120     /* 120 seconds for a reply */
  31
  32 /*
  33  * Not all the attributes here are actually settable by the application at
  34  * this time.
  35  */
  36 struct lwres_context {
  37         unsigned int            timeout;        /* time to wait for reply */
  38         lwres_uint32_t          serial;         /* serial number state */
  39
  40         /*
  41          * For network I/O.
  42          */
  43         int                     sock;           /* socket to send on */
  44         lwres_addr_t            address;        /* address to send to */
  45
  46         /*
  47          * Function pointers for allocating memory.
  48          */
  49         lwres_malloc_t          malloc;
  50         lwres_free_t            free;
  51         void                   *arg;
  52
  53         /*
  54          * resolv.conf-like data
  55          */
  56         lwres_conf_t            confdata;
  57
  58         /* linked list of outstanding DNS requests */
  59         struct lwres_async_state *pending;
  60 };
  61
  62 #endif /* LWRES_CONTEXT_P_H */
  63
  64 /*
  65  * Local Variables:
  66  * c-basic-offset: 8
  67  * End Variables:
  68  */