/**
* Add the default SecurityProtocols.
*
* <p>The names of the SecurityProtocols to add are read from a properties file.
*
* @throws InternalError if the properties file cannot be opened/read.
*/
public synchronized void addDefaultProtocols() {
if (SNMP4JSettings.isExtensibilityEnabled()) {
String secProtocols =
System.getProperty(SECURITY_PROTOCOLS_PROPERTIES, SECURITY_PROTOCOLS_PROPERTIES_DEFAULT);
InputStream is = SecurityProtocols.class.getResourceAsStream(secProtocols);
if (is == null) {
throw new InternalError("Could not read '" + secProtocols + "' from classpath!");
}
Properties props = new Properties();
try {
props.load(is);
for (Enumeration en = props.propertyNames(); en.hasMoreElements(); ) {
String className = en.nextElement().toString();
try {
Class c = Class.forName(className);
Object proto = c.newInstance();
if (proto instanceof AuthenticationProtocol) {
addAuthenticationProtocol((AuthenticationProtocol) proto);
} else if (proto instanceof PrivacyProtocol) {
addPrivacyProtocol((PrivacyProtocol) proto);
} else {
logger.error(
"Failed to register security protocol because it does "
+ "not implement required interfaces: "
+ className);
}
} catch (Exception cnfe) {
logger.error(cnfe);
throw new InternalError(cnfe.toString());
}
}
} catch (IOException iox) {
String txt = "Could not read '" + secProtocols + "': " + iox.getMessage();
logger.error(txt);
throw new InternalError(txt);
} finally {
try {
is.close();
} catch (IOException ex) {
// ignore
logger.warn(ex);
}
}
} else {
addAuthenticationProtocol(new AuthMD5());
addAuthenticationProtocol(new AuthSHA());
addPrivacyProtocol(new PrivDES());
addPrivacyProtocol(new PrivAES128());
addPrivacyProtocol(new PrivAES192());
addPrivacyProtocol(new PrivAES256());
}
}
