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package com.sun.enterprise.security;
import java.util.logging.*;
import com.sun.logging.LogDomains;
import com.sun.enterprise.server.ApplicationServer;
import com.sun.enterprise.config.serverbeans.SecurityService;
import com.sun.enterprise.config.serverbeans.ServerBeansFactory;
import com.sun.enterprise.config.serverbeans.JaccProvider;
import com.sun.enterprise.config.serverbeans.ElementProperty;
import com.sun.enterprise.config.ConfigContext;
import com.sun.enterprise.util.i18n.StringManager;
/**
* Loads the Default Policy File into the system.
*
* @author Harpreet Singh
* @author Jyri J. Virkki
*
*/
public class PolicyLoader{
private static Logger _logger = null;
static {
_logger = LogDomains.getLogger(LogDomains.SECURITY_LOGGER);
}
private static StringManager sm =
StringManager.getManager("com.sun.enterprise.security");
private static final String POLICY_PROVIDER_14 =
"javax.security.jacc.policy.provider";
private static final String POLICY_PROVIDER_13 =
"javax.security.jacc.auth.policy.provider";
private static final String POLICY_CONF_FACTORY =
"javax.security.jacc.PolicyConfigurationFactory.provider";
private static final String POLICY_PROP_PREFIX =
"com.sun.enterprise.jaccprovider.property.";
private static boolean isPolicyInstalled = false;
private static PolicyLoader _policyLoader = null;
private PolicyLoader(){
}
/**
* gets the PolicyLoader instance
*/
public static synchronized PolicyLoader getInstance(){
if(_policyLoader == null){
_policyLoader = new PolicyLoader();
}
return _policyLoader;
}
/**
* Attempts to install the policy-provider. The policy-provider
* element in domain.xml is consulted for the class to use. Note
* that if the javax.security.jacc.policy.provider system property
* is set it will override the domain.xml configuration. This will
* normally not be the case in S1AS.
*
* <P>The J2EE 1.3 property javax.security.jacc.auth.policy.provider is
* checked as a last resort. It should not be set in J2EE 1.4.
*
*/
public void loadPolicy() {
if (isPolicyInstalled) {
_logger.log(Level.FINE,
"Policy already installed. Will not re-install.");
return;
}
// get config object
JaccProvider jacc = getConfiguredJaccProvider();
// set config properties (see method comments)
setPolicyConfigurationFactory(jacc);
boolean j2ee13 = false;
// check if system property is set
String javaPolicy = System.getProperty(POLICY_PROVIDER_14);
if (javaPolicy !=null) {
// inform user domain.xml is being ignored
_logger.log(Level.INFO, "policy.propoverride",
new String[] { POLICY_PROVIDER_14, javaPolicy } );
} else {
// otherwise obtain JACC policy-provider from domain.xml
if (jacc != null) {
javaPolicy = jacc.getPolicyProvider();
}
}
if (javaPolicy == null) {
javaPolicy = System.getProperty(POLICY_PROVIDER_13);
if (javaPolicy != null) {
// warn user j2ee13 property is being used
j2ee13 = true;
_logger.log(Level.WARNING, "policy.propoverride",
new String[] { POLICY_PROVIDER_13, javaPolicy} );
}
}
// now install the policy provider if one was identified
if (javaPolicy != null) {
try {
_logger.log(Level.INFO, "policy.loading", javaPolicy);
Object obj = Class.forName(javaPolicy).newInstance();
if (j2ee13) {
// Use JDK 1.3 classes if j2ee13 property being used
if (!(obj instanceof javax.security.auth.Policy)) {
String msg =
sm.getString("enterprise.security.plcyload.not13");
throw new RuntimeException(msg);
}
javax.security.auth.Policy policy =
(javax.security.auth.Policy)obj;
javax.security.auth.Policy.setPolicy(policy);
policy.refresh();
} else {
// Otherwise use JDK 1.4 classes.
if (!(obj instanceof java.security.Policy)) {
String msg =
sm.getString("enterprise.security.plcyload.not14");
throw new RuntimeException(msg);
}
java.security.Policy policy = (java.security.Policy)obj;
java.security.Policy.setPolicy(policy);
policy.refresh();
}
} catch (Exception e) {
_logger.log(Level.SEVERE, "policy.installerror",
e.getMessage());
throw new RuntimeException(e);
}
// Success.
_logger.fine("Policy set to: " + javaPolicy);
isPolicyInstalled = true;
} else {
// no value for policy provider found
_logger.warning("policy.notloading");
}
}
/**
* Returns a JaccProvider object representing the jacc element from
* domain.xml which is configured in security-service.
*
* @return The config object or null on errors.
*
*/
private JaccProvider getConfiguredJaccProvider() {
JaccProvider jacc = null;
try {
ConfigContext configContext =
ApplicationServer.getServerContext().getConfigContext();
assert(configContext != null);
SecurityService securityBean =
ServerBeansFactory.getSecurityServiceBean(configContext);
assert(securityBean != null);
String name = securityBean.getJacc();
jacc = securityBean.getJaccProviderByName(name);
if (jacc == null) {
_logger.log(Level.WARNING, "policy.nosuchname", name);
}
} catch (Exception e) {
_logger.warning("policy.errorreading");
jacc = null;
}
return jacc;
}
/**
* Set internal properties based on domain.xml configuration.
*
* <P>The POLICY_CONF_FACTORY property is consumed by the jacc-api
* as documented in JACC specification. It's value is set here to the
* value given in domain.xml <i>unless</i> it is already set in which
* case the value is not modified.
*
* <P>Then and properties associated with this jacc provider from
* domain.xml are set as internal properties prefixed with
* POLICY_PROP_PREFIX. This is currently a workaround for bug 4846938.
* A cleaner interface should be adopted.
*
*/
private void setPolicyConfigurationFactory(JaccProvider jacc) {
if (jacc == null) {
return;
}
// Handle JACC-specified property for factory
String prop = System.getProperty(POLICY_CONF_FACTORY);
if (prop != null) {
// warn user of override
_logger.log(Level.WARNING, "policy.factoryoverride",
new String[] { POLICY_CONF_FACTORY, prop } );
} else {
// use domain.xml value by setting the property to it
String factory = jacc.getPolicyConfigurationFactoryProvider();
if (factory == null) {
_logger.log(Level.WARNING, "policy.nofactory");
} else {
System.setProperty(POLICY_CONF_FACTORY, factory);
}
}
// Next, make properties of this jacc provider available to provider
int propCount = jacc.sizeElementProperty();
for (int i=0; i<propCount; i++) {
ElementProperty p = jacc.getElementProperty(i);
String name = POLICY_PROP_PREFIX + p.getName();
String value = p.getValue();
_logger.finest("PolicyLoader set ["+name+"] to ["+value+"]");
System.setProperty(name, value);
}
}
}
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