/**************************************************************************
* Parts copyright (c) 2001 by Punch Telematix. All rights reserved. *
* Parts copyright (c) 2009 by Chris Gray, /k/ Embedded Java Solutions. *
* All rights reserved. *
* *
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* notice, this list of conditions and the following disclaimer. *
* 2. 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. *
* 3. Neither the name of Punch Telematix or of /k/ Embedded Java Solutions*
* nor the names of other contributors may be used to endorse or promote*
* products derived from this software without specific prior written *
* permission. *
* *
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED *
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**************************************************************************/
package java.io;
import wonka.vm.SecurityConfiguration;
import java.security.AccessController;
/*
** Package-visible class used to get system properties with full privileges.
*/
class GetSystemProperty implements java.security.PrivilegedAction {
static final String LINE_SEPARATOR;
static final String FILE_SEPARATOR;
static final String PATH_SEPARATOR;
static final String FILE_ENCODING;
static final String TMPDIR;
private String key;
private String dflt;
private String value;
/**
** Our static initialiser fetches the five system properties which
** everybody in this package seems to need ...
*/
static {
GetSystemProperty gsp;
if (SecurityConfiguration.ENABLE_SECURITY_CHECKS) {
gsp = new GetSystemProperty("line.separator","\n");
AccessController.doPrivileged(gsp);
LINE_SEPARATOR = gsp.get();
gsp = new GetSystemProperty("file.separator","/");
AccessController.doPrivileged(gsp);
FILE_SEPARATOR = gsp.get();
gsp = new GetSystemProperty("path.separator",":");
AccessController.doPrivileged(gsp);
PATH_SEPARATOR = gsp.get();
gsp = new GetSystemProperty("file.encoding","8859_1");
AccessController.doPrivileged(gsp);
FILE_ENCODING = gsp.get();
gsp = new GetSystemProperty("java.io.tmpdir","/tmp");
AccessController.doPrivileged(gsp);
TMPDIR = gsp.get();
gsp = null;
}
else {
LINE_SEPARATOR = System.getProperty("line.separator", "\n");
FILE_SEPARATOR = System.getProperty("file.separator", "/");
PATH_SEPARATOR = System.getProperty("path.separator", ":");
FILE_ENCODING = System.getProperty("file.encoding", "8859_1");
TMPDIR = System.getProperty("java.io.tmpdir", "/tmp");
}
}
/**
** Constructor which takes a key and a default value.
*/
public GetSystemProperty(String key, String dflt) {
this.key = key;
this.dflt = dflt;
}
/**
** Constructor which just takes a key.
*/
public GetSystemProperty(String key) {
this.key = key;
}
/**
** This gets called by doPrivileged().
*/
public Object run() {
if (dflt == null) {
value = System.getProperty(key);
}
else {
value = System.getProperty(key, dflt);
}
return null;
}
/**
** Return the value to the caller.
*/
public String get() {
return value;
}
}