external/bsd/bind/dist/bin/named/lwdnoop.c

   1 /*      $NetBSD: lwdnoop.c,v 1.4 2014/12/10 04:37:51 christos Exp $     */
   2
   3 /*
   4  * Copyright (C) 2004, 2005, 2007, 2008  Internet Systems Consortium, Inc. ("ISC")
   5  * Copyright (C) 2000, 2001  Internet Software Consortium.
   6  *
   7  * Permission to use, copy, modify, and/or distribute this software for any
   8  * purpose with or without fee is hereby granted, provided that the above
   9  * copyright notice and this permission notice appear in all copies.
  10  *
  11  * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
  12  * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
  13  * AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
  14  * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
  15  * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
  16  * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
  17  * PERFORMANCE OF THIS SOFTWARE.
  18  */
  19
  20 /* Id: lwdnoop.c,v 1.13 2008/01/22 23:28:04 tbox Exp  */
  21
  22 /*! \file */
  23
  24 #include <config.h>
  25
  26 #include <isc/socket.h>
  27 #include <isc/util.h>
  28
  29 #include <named/types.h>
  30 #include <named/lwdclient.h>
  31
  32 void
  33 ns_lwdclient_processnoop(ns_lwdclient_t *client, lwres_buffer_t *b) {
  34         lwres_nooprequest_t *req;
  35         lwres_noopresponse_t resp;
  36         isc_result_t result;
  37         lwres_result_t lwres;
  38         isc_region_t r;
  39         lwres_buffer_t lwb;
  40
  41         REQUIRE(NS_LWDCLIENT_ISRECVDONE(client));
  42         INSIST(client->byaddr == NULL);
  43
  44         req = NULL;
  45
  46         result = lwres_nooprequest_parse(client->clientmgr->lwctx,
  47                                          b, &client->pkt, &req);
  48         if (result != LWRES_R_SUCCESS)
  49                 goto send_error;
  50
  51         client->pkt.recvlength = LWRES_RECVLENGTH;
  52         client->pkt.authtype = 0; /* XXXMLG */
  53         client->pkt.authlength = 0;
  54         client->pkt.result = LWRES_R_SUCCESS;
  55
  56         resp.datalength = req->datalength;
  57         resp.data = req->data;
  58
  59         lwres = lwres_noopresponse_render(client->clientmgr->lwctx, &resp,
  60                                           &client->pkt, &lwb);
  61         if (lwres != LWRES_R_SUCCESS)
  62                 goto cleanup_req;
  63
  64         r.base = lwb.base;
  65         r.length = lwb.used;
  66         client->sendbuf = r.base;
  67         client->sendlength = r.length;
  68         result = ns_lwdclient_sendreply(client, &r);
  69         if (result != ISC_R_SUCCESS)
  70                 goto cleanup_lwb;
  71
  72         /*
  73          * We can now destroy request.
  74          */
  75         lwres_nooprequest_free(client->clientmgr->lwctx, &req);
  76
  77         NS_LWDCLIENT_SETSEND(client);
  78
  79         return;
  80
  81  cleanup_lwb:
  82         lwres_context_freemem(client->clientmgr->lwctx, lwb.base, lwb.length);
  83
  84  cleanup_req:
  85         lwres_nooprequest_free(client->clientmgr->lwctx, &req);
  86
  87  send_error:
  88         ns_lwdclient_errorpktsend(client, LWRES_R_FAILURE);
  89 }