// Does this Context require an Authenticator?
SecurityConstraint constraints[] = context.findConstraints();
if ((constraints == null) || (constraints.length == 0))
return;
LoginConfig loginConfig = context.getLoginConfig();
if (loginConfig == null) {
loginConfig = DUMMY_LOGIN_CONFIG;
context.setLoginConfig(loginConfig);
}
// Has an authenticator been configured already?
if (context instanceof Authenticator)
return;
if (context instanceof ContainerBase) {
Pipeline pipeline = ((ContainerBase) context).getPipeline();
if (pipeline != null) {
Valve basic = pipeline.getBasic();
if ((basic != null) && (basic instanceof Authenticator))
return;
Valve valves[] = pipeline.getValves();
for (int i = 0; i < valves.length; i++) {
if (valves[i] instanceof Authenticator)
return;
}
}
} else {
return; // Cannot install a Valve even if it would be needed
}
// Has a Realm been configured for us to authenticate against?
if (context.getRealm() == null) {
log.error(sm.getString("contextConfig.missingRealm"));
ok = false;
return;
}
/*
* First check to see if there is a custom mapping for the login
* method. If so, use it. Otherwise, check if there is a mapping in
* org/apache/catalina/startup/Authenticators.properties.
*/
Valve authenticator = null;
if (customAuthenticators != null) {
authenticator = (Valve)
customAuthenticators.get(loginConfig.getAuthMethod());
}
if (authenticator == null) {
// Load our mapping properties if necessary
if (authenticators == null) {
try {
InputStream is=this.getClass().getClassLoader().getResourceAsStream("org/apache/catalina/startup/Authenticators.properties");
if( is!=null ) {
authenticators = new Properties();
authenticators.load(is);
} else {
log.error(sm.getString(
"contextConfig.authenticatorResources"));
ok=false;
return;
}
} catch (IOException e) {
log.error(sm.getString(
"contextConfig.authenticatorResources"), e);
ok = false;
return;
}
}
// Identify the class name of the Valve we should configure
String authenticatorName = null;
authenticatorName =
authenticators.getProperty(loginConfig.getAuthMethod());
if (authenticatorName == null) {
log.error(sm.getString("contextConfig.authenticatorMissing",
loginConfig.getAuthMethod()));
ok = false;
return;
}
// Instantiate and install an Authenticator of the requested class
try {
Class authenticatorClass = Class.forName(authenticatorName);
authenticator = (Valve) authenticatorClass.newInstance();
} catch (Throwable t) {
log.error(sm.getString(
"contextConfig.authenticatorInstantiate",
authenticatorName),
t);
ok = false;
}
}
if (authenticator != null && context instanceof ContainerBase) {
Pipeline pipeline = ((ContainerBase) context).getPipeline();
if (pipeline != null) {
((ContainerBase) context).addValve(authenticator);
if (log.isDebugEnabled()) {
log.debug(sm.getString(
"contextConfig.authenticatorConfigured",
loginConfig.getAuthMethod()));
}
}
}
}