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package com.sun.gjc.util;
import com.sun.enterprise.util.i18n.StringManager;
import com.sun.gjc.common.DataSourceObjectBuilder;
import javax.resource.ResourceException;
import javax.resource.spi.ManagedConnectionFactory;
import javax.resource.spi.security.PasswordCredential;
import javax.security.auth.Subject;
import java.security.AccessController;
import java.security.PrivilegedAction;
import java.util.Arrays;
import java.util.Iterator;
import java.util.Set;
/**
* SecurityUtils for Generic JDBC Connector.
*
* @author Evani Sai Surya Kiran
* @version 1.0, 02/07/22
*/
public class SecurityUtils {
static private StringManager sm = StringManager.getManager(
DataSourceObjectBuilder.class);
/**
* This method returns the <code>PasswordCredential</code> object, given
* the <code>ManagedConnectionFactory</code>, subject and the
* <code>ConnectionRequestInfo</code>. It first checks if the
* <code>ConnectionRequestInfo</code> is null or not. If it is not null,
* it constructs a <code>PasswordCredential</code> object with
* the user and password fields from the <code>ConnectionRequestInfo</code> and returns this
* <code>PasswordCredential</code> object. If the <code>ConnectionRequestInfo</code>
* is null, it retrieves the <code>PasswordCredential</code> objects from
* the <code>Subject</code> parameter and returns the first
* <code>PasswordCredential</code> object which contains a
* <code>ManagedConnectionFactory</code>, instance equivalent
* to the <code>ManagedConnectionFactory</code>, parameter.
*
* @param mcf <code>ManagedConnectionFactory</code>
* @param subject <code>Subject</code>
* @param info <code>ConnectionRequestInfo</code>
* @return <code>PasswordCredential</code>
* @throws <code>ResourceException</code> generic exception if operation fails
* @throws <code>SecurityException</code> if access to the <code>Subject</code> instance is denied
*/
public static PasswordCredential getPasswordCredential(final ManagedConnectionFactory mcf,
final Subject subject, javax.resource.spi.ConnectionRequestInfo info) throws ResourceException {
if (info == null) {
if (subject == null) {
return null;
} else {
PasswordCredential pc = (PasswordCredential) AccessController.doPrivileged
(new PrivilegedAction() {
public Object run() {
Set passwdCredentialSet = subject.getPrivateCredentials(PasswordCredential.class);
Iterator iter = passwdCredentialSet.iterator();
while (iter.hasNext()) {
PasswordCredential temp = (PasswordCredential) iter.next();
if (temp.getManagedConnectionFactory().equals(mcf)) {
return temp;
}
}
return null;
}
});
if (pc == null) {
String msg = sm.getString("su.no_passwd_cred");
throw new javax.resource.spi.SecurityException(msg);
} else {
return pc;
}
}
} else {
com.sun.gjc.spi.ConnectionRequestInfo cxReqInfo = (com.sun.gjc.spi.ConnectionRequestInfo) info;
PasswordCredential pc = new PasswordCredential(cxReqInfo.getUser(), cxReqInfo.getPassword().toCharArray());
pc.setManagedConnectionFactory(mcf);
return pc;
}
}
/**
* Returns true if two strings are equal; false otherwise
*
* @param str1 <code>String</code>
* @param str2 <code>String</code>
* @return true if the two strings are equal
* false otherwise
*/
static private boolean isEqual(String str1, String str2) {
if (str1 == null) {
return (str2 == null);
} else {
return str1.equals(str2);
}
}
/**
* Returns true if two <code>PasswordCredential</code> objects are equal; false otherwise
*
* @param pC1 <code>PasswordCredential</code>
* @param pC2 <code>PasswordCredential</code>
* @return true if the two PasswordCredentials are equal
* false otherwise
*/
static public boolean isPasswordCredentialEqual(PasswordCredential pC1, PasswordCredential pC2) {
if (pC1 == pC2)
return true;
if (pC1 == null || pC2 == null)
return (pC1 == pC2);
if (!isEqual(pC1.getUserName(), pC2.getUserName())) {
return false;
}
return Arrays.equals(pC1.getPassword(), pC2.getPassword());
}
}