SSLAuthenticator (Apache Tomcat 10.1.48 API Documentation)
Description: declaration: package: org.apache.catalina.authenticator, class: SSLAuthenticator

# Class SSLAuthenticator

java.lang.Object
org.apache.catalina.util.LifecycleBase
org.apache.catalina.util.LifecycleMBeanBase
org.apache.catalina.valves.ValveBase
org.apache.catalina.authenticator.AuthenticatorBase
org.apache.catalina.authenticator.SSLAuthenticator

All Implemented Interfaces:
  `RegistrationListener, MBeanRegistration, Authenticator, Contained, JmxEnabled, Lifecycle, Valve`

public class SSLAuthenticator extends AuthenticatorBase
An Authenticator and Valve implementation of authentication that utilizes SSL certificates to identify client users.

- ## Nested Class Summary

  ### Nested classes/interfaces inherited from class AuthenticatorBase

  `AuthenticatorBase.AllowCorsPreflight`

  ### Nested classes/interfaces inherited from interface Lifecycle

  `Lifecycle.SingleUse`

- ## Field Summary

  ### Fields inherited from class AuthenticatorBase

  `alwaysUseSession, AUTH_HEADER_NAME, cache, changeSessionIdOnAuthentication, context, disableProxyCaching, jaspicCallbackHandlerClass, REALM_NAME, securePagesWithPragma, secureRandomAlgorithm, secureRandomClass, secureRandomProvider, sendAuthInfoResponseHeaders, sessionIdGenerator, sm, sso`

  ### Fields inherited from class ValveBase

  `asyncSupported, container, containerLog, next`

  ### Fields inherited from interface Lifecycle

  `AFTER_DESTROY_EVENT, AFTER_INIT_EVENT, AFTER_START_EVENT, AFTER_STOP_EVENT, BEFORE_DESTROY_EVENT, BEFORE_INIT_EVENT, BEFORE_START_EVENT, BEFORE_STOP_EVENT, CONFIGURE_START_EVENT, CONFIGURE_STOP_EVENT, PERIODIC_EVENT, START_EVENT, STOP_EVENT`

- ## Constructor Summary

  Constructors
  Constructor
  Description
  `SSLAuthenticator()`

- ## Method Summary

  Modifier and Type
  Method
  Description
  `protected boolean`
  `doAuthenticate(Request request, HttpServletResponse response)`
  Authenticate the user by checking for the existence of a certificate chain, validating it against the trust manager for the connector and then validating the user's identity against the configured Realm.
  `protected String`
  `getAuthMethod()`
  Return the authentication method, which is vendor-specific and not defined by HttpServletRequest.
  `protected X509Certificate[]`
  `getRequestCertificates(Request request)`
  Look for the X509 certificate chain in the Request under the key `jakarta.servlet.request.X509Certificate`.
  `protected boolean`
  `isPreemptiveAuthPossible(Request request)`
  Can the authenticator perform preemptive authentication for the given request?
  `protected void`
  `startInternal()`
  Start this component and implement the requirements of `LifecycleBase.startInternal()`.

  ### Methods inherited from class AuthenticatorBase

  `allowCorsPreflightBypass, associate, authenticate, changeSessionID, checkForCachedAuthentication, doLogin, getAllowCorsPreflight, getAlwaysUseSession, getCache, getChangeSessionIdOnAuthentication, getContainer, getDisableProxyCaching, getJaspicCallbackHandlerClass, getRealmName, getSecurePagesWithPragma, getSecureRandomAlgorithm, getSecureRandomClass, getSecureRandomProvider, invoke, isContinuationRequired, isSendAuthInfoResponseHeaders, login, logout, notify, reauthenticateFromSSO, register, register, setAllowCorsPreflight, setAlwaysUseSession, setCache, setChangeSessionIdOnAuthentication, setContainer, setDisableProxyCaching, setJaspicCallbackHandlerClass, setSecurePagesWithPragma, setSecureRandomAlgorithm, setSecureRandomClass, setSecureRandomProvider, setSendAuthInfoResponseHeaders, stopInternal`

  ### Methods inherited from class ValveBase

  `backgroundProcess, getDomainInternal, getNext, getObjectNameKeyProperties, initInternal, isAsyncSupported, setAsyncSupported, setNext, toString`

  ### Methods inherited from class LifecycleMBeanBase

  `destroyInternal, getDomain, getObjectName, postDeregister, postRegister, preDeregister, preRegister, register, setDomain, unregister, unregister`

  ### Methods inherited from class LifecycleBase

  `addLifecycleListener, destroy, findLifecycleListeners, fireLifecycleEvent, getState, getStateName, getThrowOnFailure, init, removeLifecycleListener, setState, setState, setThrowOnFailure, start, stop`

  ### Methods inherited from class Object

  `clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait`

- ## Constructor Details

  - ### SSLAuthenticator

    public SSLAuthenticator()

- ## Method Details

  - ### doAuthenticate

    protected boolean doAuthenticate(Request request, HttpServletResponse response) throws IOException
    Authenticate the user by checking for the existence of a certificate chain, validating it against the trust manager for the connector and then validating the user's identity against the configured Realm.
    Specified by:
      `doAuthenticate` in class `AuthenticatorBase`
    Parameters:
      `request` - Request we are processing
      `response` - Response we are creating
    Returns:
      `true` if the user was authenticated, otherwise `false`, in which case an authentication challenge will have been written to the response
    Throws:
      `IOException` - if an input/output error occurs

  - ### getAuthMethod

    protected String getAuthMethod()
    Description copied from class: `AuthenticatorBase`
    Return the authentication method, which is vendor-specific and not defined by HttpServletRequest.
    Specified by:
      `getAuthMethod` in class `AuthenticatorBase`
    Returns:
      the authentication method, which is vendor-specific and not defined by HttpServletRequest.

  - ### isPreemptiveAuthPossible

    protected boolean isPreemptiveAuthPossible(Request request)
    Description copied from class: `AuthenticatorBase`
    Can the authenticator perform preemptive authentication for the given request?
    Overrides:
      `isPreemptiveAuthPossible` in class `AuthenticatorBase`
    Parameters:
      `request` - The request to check for credentials
    Returns:
      `true` if preemptive authentication is possible, otherwise `false`

  - ### getRequestCertificates

    protected X509Certificate[] getRequestCertificates(Request request) throws IllegalStateException
    Look for the X509 certificate chain in the Request under the key `jakarta.servlet.request.X509Certificate`. If not found, trigger extracting the certificate chain from the Coyote request.
    Parameters:
      `request` - Request to be processed
    Returns:
      The X509 certificate chain if found, `null` otherwise.
    Throws:
      `IllegalStateException`

  - ### startInternal

    protected void startInternal() throws LifecycleException
    Description copied from class: `ValveBase`
    Start this component and implement the requirements of `LifecycleBase.startInternal()`.
    Overrides:
      `startInternal` in class `AuthenticatorBase`
    Throws:
      `LifecycleException` - if this component detects a fatal error that prevents this component from being used