contrib/bind-9.5.2/bin/named/lwdnoop.c

   1 /*
   2  * Copyright (C) 2004, 2005, 2007, 2008  Internet Systems Consortium, Inc. ("ISC")
   3  * Copyright (C) 2000, 2001  Internet Software Consortium.
   4  *
   5  * Permission to use, copy, modify, and/or distribute this software for any
   6  * purpose with or without fee is hereby granted, provided that the above
   7  * copyright notice and this permission notice appear in all copies.
   8  *
   9  * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
  10  * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
  11  * AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
  12  * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
  13  * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
  14  * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
  15  * PERFORMANCE OF THIS SOFTWARE.
  16  */
  17
  18 /* $Id: lwdnoop.c,v 1.11.130.2 2008/01/22 23:27:35 tbox Exp $ */
  19
  20 /*! \file */
  21
  22 #include <config.h>
  23
  24 #include <isc/socket.h>
  25 #include <isc/util.h>
  26
  27 #include <named/types.h>
  28 #include <named/lwdclient.h>
  29
  30 void
  31 ns_lwdclient_processnoop(ns_lwdclient_t *client, lwres_buffer_t *b) {
  32         lwres_nooprequest_t *req;
  33         lwres_noopresponse_t resp;
  34         isc_result_t result;
  35         lwres_result_t lwres;
  36         isc_region_t r;
  37         lwres_buffer_t lwb;
  38
  39         REQUIRE(NS_LWDCLIENT_ISRECVDONE(client));
  40         INSIST(client->byaddr == NULL);
  41
  42         req = NULL;
  43
  44         result = lwres_nooprequest_parse(client->clientmgr->lwctx,
  45                                          b, &client->pkt, &req);
  46         if (result != LWRES_R_SUCCESS)
  47                 goto send_error;
  48
  49         client->pkt.recvlength = LWRES_RECVLENGTH;
  50         client->pkt.authtype = 0; /* XXXMLG */
  51         client->pkt.authlength = 0;
  52         client->pkt.result = LWRES_R_SUCCESS;
  53
  54         resp.datalength = req->datalength;
  55         resp.data = req->data;
  56
  57         lwres = lwres_noopresponse_render(client->clientmgr->lwctx, &resp,
  58                                           &client->pkt, &lwb);
  59         if (lwres != LWRES_R_SUCCESS)
  60                 goto cleanup_req;
  61
  62         r.base = lwb.base;
  63         r.length = lwb.used;
  64         client->sendbuf = r.base;
  65         client->sendlength = r.length;
  66         result = ns_lwdclient_sendreply(client, &r);
  67         if (result != ISC_R_SUCCESS)
  68                 goto cleanup_lwb;
  69
  70         /*
  71          * We can now destroy request.
  72          */
  73         lwres_nooprequest_free(client->clientmgr->lwctx, &req);
  74
  75         NS_LWDCLIENT_SETSEND(client);
  76
  77         return;
  78
  79  cleanup_lwb:
  80         lwres_context_freemem(client->clientmgr->lwctx, lwb.base, lwb.length);
  81
  82  cleanup_req:
  83         lwres_nooprequest_free(client->clientmgr->lwctx, &req);
  84
  85  send_error:
  86         ns_lwdclient_errorpktsend(client, LWRES_R_FAILURE);
  87 }