ServerPermissions.java
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/*
* This file is part of LiteLoader.
* Copyright (C) 2012-16 Adam Mummery-Smith
* All Rights Reserved.
*/
package com.mumfrey.liteloader.permissions;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import net.eq2online.permissions.ReplicatedPermissionsContainer;
import net.minecraft.network.PacketBuffer;
/**
* Replicated permissions implementation
*
* @author Adam Mummery-Smith
*/
public class ServerPermissions implements ReplicatedPermissions
{
/**
* Pattern for recognising valid permissions in the server feed
*/
private static final Pattern permissionPattern = Pattern.compile("^([\\+\\-])(([a-z0-9]+\\.)*[a-z0-9\\*]+)$", Pattern.CASE_INSENSITIVE);
protected String modName;
/**
* Root permission node
*/
protected Permission permissions = new Permission();
/**
* Time the permissions were updated
*/
protected long createdTime = 0L;
/**
* Expiry time of the current data cache
*/
protected long validUntil = 0L;
/**
* Time to cache server responses by default
*/
protected long cacheTime = 10L * 60L * 1000L; // 10 minutes
/**
* Time to wait when refreshing server permissions before trying again
*/
protected long refreshTime = 15L * 1000L; // 15 seconds
/**
* @param data
*/
public ServerPermissions(PacketBuffer data)
{
this.createdTime = System.currentTimeMillis();
this.validUntil = this.createdTime + this.cacheTime;
ReplicatedPermissionsContainer response = ReplicatedPermissionsContainer.fromPacketBuffer(data);
if (response != null)
{
response.sanitise();
this.modName = response.modName;
this.validUntil = System.currentTimeMillis() + response.remoteCacheTimeSeconds * 1000L;
for (String permissionString : response.permissions)
{
Matcher permissionMatcher = permissionPattern.matcher(permissionString);
if (permissionMatcher.matches())
{
String name = permissionMatcher.group(2);
boolean value = permissionMatcher.group(1).equals("+");
this.permissions.setPermissionAndValue(name, value);
}
}
}
}
/**
* Get the permissible mod name
*/
public String getModName()
{
return this.modName;
}
/* (non-Javadoc)
* @see net.eq2online.permissions.Permissions#getPermissionSet(
* java.lang.String)
*/
@Override
public boolean getPermissionSet(String permission)
{
return this.permissions.getPermission(permission) != null;
}
/* (non-Javadoc)
* @see net.eq2online.permissions.Permissions#getHasPermission(
* java.lang.String)
*/
@Override
public boolean getHasPermission(String permission)
{
Permission perm = this.permissions.getPermission(permission);
return perm != null && perm.getValue();
}
/* (non-Javadoc)
* @see net.eq2online.permissions.Permissions#getHasPermission(
* java.lang.String, boolean)
*/
@Override
public boolean getHasPermission(String permission, boolean defaultValue)
{
Permission perm = this.permissions.getPermission(permission);
return perm != null ? perm.getValue() : defaultValue;
}
/* (non-Javadoc)
* @see net.eq2online.permissions.ReplicatedPermissions#getReplicationTime()
*/
@Override
public long getReplicationTime()
{
return this.createdTime;
}
/* (non-Javadoc)
* @see net.eq2online.permissions.ReplicatedPermissions#isValid()
*/
@Override
public boolean isValid()
{
return System.currentTimeMillis() < this.validUntil;
}
/* (non-Javadoc)
* @see net.eq2online.permissions.ReplicatedPermissions#invalidate()
*/
@Override
public void invalidate()
{
this.validUntil = 0L;
}
@Override
public void notifyRefreshPending()
{
this.validUntil = System.currentTimeMillis() + this.refreshTime;
}
}