libxdas_api_basic.c

Go to the documentation of this file.

/*----------------------------------------------------------------------------
 * Copyright (c) 2006, Novell, Inc.
 * All rights reserved.
 * 
 * Redistribution and use in source and binary forms, with or without 
 * modification, are permitted provided that the following conditions are 
 * met:
 * 
 *     * Redistributions of source code must retain the above copyright 
 *       notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above copyright 
 *       notice, this list of conditions and the following disclaimer in the 
 *       documentation and/or other materials provided with the distribution.
 *     * Neither the name of the Novell nor the names of its contributors 
 *       may be used to endorse or promote products derived from this 
 *       software without specific prior written permission.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 
 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR 
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 
 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF 
 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 
 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *--------------------------------------------------------------------------*/

#include <xdas.h>
#include <xdas_util.h>
#include <xdas_debug.h>

#include "libxdas_impl.h"

#include <malloc.h>
#include <string.h>

/*---------------------------------------------------------------------------
 */
XDASXPC int XDASAPI xdas_initialize_session(
      int * minor_status,
      const char * org_info,
      xdas_audit_ref_t * das_ref)
{
   int err;
   xdas_session * xs;
   int bit_bucket;

   /* check parameters */
   if (!minor_status)
      minor_status = &bit_bucket;
   *minor_status = 0;

   xdas_assert(org_info != 0);
   if (org_info == 0)
      return XDAS_S_CALL_INACCESSIBLE_READ | XDAS_S_INVALID_ORIG_INFO;

   xdas_assert(das_ref != 0);
   if (das_ref == 0)
      return XDAS_S_CALL_INACCESSIBLE_WRITE | XDAS_S_INVALID_DAS_REF;

   *das_ref = 0;

#ifndef LINUX_KERNEL
   /* ensure xdas library is initialized */
   if ((err = xdas_library_init(minor_status)) != 0)
      return err;
#endif

   /* create a new session structure */
   if ((xs = (xdas_session *)malloc(sizeof(*xs))) == 0)
      return (*minor_status = OXDAS_MS_OUT_OF_MEMORY), XDAS_S_FAILURE;
   memset(xs, 0, sizeof(*xs));
   xs->signature = XDAS_SESSION_SIG;

#ifndef LINUX_KERNEL
   xs->s = BAD_SOCKET;
#endif

   /* populate and check caller's rights */
   xdas_set_session_rights(xs);
   if (!xdas_session_has_rights(xs, XDAS_AUDIT_SERVICE))
   {
      xdas_internal_terminate_session(xs);
      return XDAS_S_AUTHORIZATION_FAILURE;
   }

   /* parse originator info */
   if ((err = xdas_parse_info(org_info, 0, 
         xs->org_info, xdas_elemcount(xs->org_info))) < 0)
   {
      xdas_internal_terminate_session(xs);
      switch(err)
      {
         case -1: return (*minor_status = OXDAS_MS_OUT_OF_MEMORY), XDAS_S_FAILURE;
         case -2: return XDAS_S_CALL_BAD_STRUCTURE | XDAS_S_INVALID_ORIG_INFO;
         default: return (*minor_status = OXDAS_MS_UNKNOWN_ERROR), XDAS_S_FAILURE;
      }
   }

   /* retreive system time information */
   if (xdas_set_time_info(xs) < 0)
   {
      xdas_internal_terminate_session(xs);
      return (*minor_status = OXDAS_MS_OUT_OF_MEMORY), XDAS_S_FAILURE;
   }

   /* establish connection with the xdas daemon/service */
   if ((err = xdas_service_connect(minor_status, xs)) != 0)
   {
      xdas_internal_terminate_session(xs);
      return err;
   }

   /* return session pointer as a handle */
   *das_ref = (xdas_audit_ref_t)xs;

   return XDAS_S_COMPLETE;
}

/*---------------------------------------------------------------------------
 */
XDASXPC int XDASAPI xdas_terminate_session(
      int * minor_status,
      xdas_audit_ref_t * das_ref)
{
   xdas_session * xs;
   int bit_bucket;

   /* check parameters */
   if (!minor_status)
      minor_status = &bit_bucket;
   *minor_status = 0;

   xdas_assert(das_ref != 0 && *das_ref != 0);
   if (das_ref == 0 || *das_ref == 0)
      return XDAS_S_CALL_INACCESSIBLE_READ | XDAS_S_INVALID_DAS_REF;

   xs = xdas_validate_session(*das_ref);
   xdas_assert(xs != 0);
   if (xs == 0)
      return XDAS_S_CALL_BAD_STRUCTURE | XDAS_S_INVALID_DAS_REF;

   xdas_internal_terminate_session(xs);
   *das_ref = 0;
   return XDAS_S_COMPLETE;
}