ALSA mixer support.

[disorder] / lib / queue-rights.c

/*
 * This file is part of DisOrder.
 * Copyright (C) 2007 Richard Kettlewell
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
 * USA
 */
/** @file lib/queue-rights.c
 * @brief Various rights-checking operations
 */

#include <config.h>
#include "types.h"

#include <string.h>

#include "queue.h"
#include "rights.h"

/** @brief Test for scratchability
 * @param rights User rights
 * @param who Username
 * @param q Queue entry or NULL
 * @return non-0 if scratchable, else 0
 */
int right_scratchable(rights_type rights, const char *who,
		      const struct queue_entry *q) {
  rights_type r;
  
  if(!q)
    return 0;
  if(q->submitter)
    if(!strcmp(q->submitter, who))
      r = RIGHT_SCRATCH_MINE|RIGHT_SCRATCH_ANY;
    else
      r = RIGHT_SCRATCH_ANY;
  else
    r = RIGHT_SCRATCH_RANDOM|RIGHT_SCRATCH_ANY;
  return !!(rights & r);
}

/** @brief Test for movability
 * @param rights User rights
 * @param who Username
 * @param q Queue entry or NULL
 * @return non-0 if movable, else 0
 */
int right_movable(rights_type rights, const char *who,
		  const struct queue_entry *q) {
  rights_type r;

  if(!q)
    return 0;
  if(q->submitter)
    if(!strcmp(q->submitter, who))
      r = RIGHT_MOVE_MINE|RIGHT_MOVE_ANY;
    else
      r = RIGHT_MOVE_ANY;
  else
    r = RIGHT_MOVE_RANDOM|RIGHT_MOVE_ANY;
  return !!(rights & r);
}

/** @brief Test for removability
 * @param rights User rights
 * @param who Username
 * @param q Queue entry or NULL
 * @return non-0 if removable, else 0
 */
int right_removable(rights_type rights, const char *who,
		    const struct queue_entry *q) {
  rights_type r;
  
  if(!q)
    return 0;
  if(q->submitter)
    if(!strcmp(q->submitter, who))
      r = RIGHT_REMOVE_MINE|RIGHT_REMOVE_ANY;
    else
      r = RIGHT_REMOVE_ANY;
  else
    r = RIGHT_REMOVE_RANDOM|RIGHT_REMOVE_ANY;
  return !!(rights & r);
}

/*
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*/