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DenyActivityRestriction.java
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DenyActivityRestriction.java
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/* dCache - http://www.dcache.org/
*
* Copyright (C) 2015 Deutsches Elektronen-Synchrotron
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 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 Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package org.dcache.auth.attributes;
import com.google.common.base.Joiner;
import diskCacheV111.util.FsPath;
import java.util.EnumSet;
import java.util.function.Function;
/**
* A Restriction that allows a user to perform only activity from the supplied set of activities.
*/
public class DenyActivityRestriction implements Restriction {
private static final long serialVersionUID = 1L;
private final EnumSet<Activity> denied;
public static DenyActivityRestriction restrictAllActivity() {
return new DenyActivityRestriction(EnumSet.allOf(Activity.class));
}
public static DenyActivityRestriction restrictNoActivity() {
return new DenyActivityRestriction(EnumSet.noneOf(Activity.class));
}
public DenyActivityRestriction(Activity... denied) {
this.denied = (denied.length > 0)
? EnumSet.of(denied[0], denied)
: EnumSet.noneOf(Activity.class);
}
public DenyActivityRestriction(EnumSet<Activity> denied) {
this.denied = denied;
}
public EnumSet<Activity> getDenied() {
return EnumSet.copyOf(denied);
}
@Override
public boolean isRestricted(Activity activity, FsPath path) {
return denied.contains(activity);
}
@Override
public boolean isRestricted(Activity activity, FsPath directory, String name, boolean skipSymlinkResolution) {
return denied.contains(activity);
}
@Override
public boolean hasUnrestrictedChild(Activity activity, FsPath parent) {
return !denied.contains(activity);
}
@Override
public int hashCode() {
return denied.hashCode();
}
@Override
public boolean equals(Object other) {
return other instanceof DenyActivityRestriction && denied.equals(
((DenyActivityRestriction) other).denied);
}
@Override
public boolean isSubsumedBy(Restriction other) {
if (!(other instanceof DenyActivityRestriction)) {
return false;
}
EnumSet<Activity> otherDenied = ((DenyActivityRestriction) other).denied;
return otherDenied.containsAll(denied);
}
@Override
public void setPathResolver(Function<FsPath, FsPath> resolver) {
//NOP
}
@Override
public String toString() {
if (denied.isEmpty()) {
return "Unrestricted";
}
if (denied.size() == Activity.values().length) {
return "FullyRestricted";
}
StringBuilder sb = new StringBuilder();
sb.append("Restrict[");
Joiner.on(',').appendTo(sb, denied);
sb.append(']');
return sb.toString();
}
}