--- /dev/null
+package org.argeo.cms.auth;
+
+import java.io.IOException;
+import java.security.cert.X509Certificate;
+import java.util.Base64;
+import java.util.Locale;
+import java.util.Map;
+import java.util.StringTokenizer;
+
+import javax.security.auth.Subject;
+import javax.security.auth.callback.Callback;
+import javax.security.auth.callback.CallbackHandler;
+import javax.security.auth.callback.UnsupportedCallbackException;
+import javax.security.auth.login.LoginException;
+import javax.security.auth.spi.LoginModule;
+
+import org.apache.commons.logging.Log;
+import org.apache.commons.logging.LogFactory;
+import org.argeo.cms.internal.auth.CmsSessionImpl;
+import org.argeo.cms.internal.kernel.Activator;
+import org.osgi.framework.BundleContext;
+import org.osgi.framework.FrameworkUtil;
+import org.osgi.service.http.HttpContext;
+import org.osgi.service.useradmin.Authorization;
+
+/** Use the HTTP session as the basis for authentication. */
+public class RemoteSessionLoginModule implements LoginModule {
+ private final static Log log = LogFactory.getLog(RemoteSessionLoginModule.class);
+
+ private Subject subject = null;
+ private CallbackHandler callbackHandler = null;
+ private Map<String, Object> sharedState = null;
+
+ private RemoteAuthRequest request = null;
+ private RemoteAuthResponse response = null;
+
+ private BundleContext bc;
+
+ private Authorization authorization;
+ private Locale locale;
+
+ @SuppressWarnings("unchecked")
+ @Override
+ public void initialize(Subject subject, CallbackHandler callbackHandler, Map<String, ?> sharedState,
+ Map<String, ?> options) {
+ bc = FrameworkUtil.getBundle(RemoteSessionLoginModule.class).getBundleContext();
+ assert bc != null;
+ this.subject = subject;
+ this.callbackHandler = callbackHandler;
+ this.sharedState = (Map<String, Object>) sharedState;
+ }
+
+ @Override
+ public boolean login() throws LoginException {
+ if (callbackHandler == null)
+ return false;
+ RemoteAuthCallback httpCallback = new RemoteAuthCallback();
+ try {
+ callbackHandler.handle(new Callback[] { httpCallback });
+ } catch (IOException e) {
+ throw new LoginException("Cannot handle http callback: " + e.getMessage());
+ } catch (UnsupportedCallbackException e) {
+ return false;
+ }
+ request = httpCallback.getRequest();
+ if (request == null) {
+ RemoteAuthSession httpSession = httpCallback.getHttpSession();
+ if (httpSession == null)
+ return false;
+ // TODO factorize with below
+ String httpSessionId = httpSession.getId();
+// if (log.isTraceEnabled())
+// log.trace("HTTP login: " + request.getPathInfo() + " #" + httpSessionId);
+ CmsSessionImpl cmsSession = CmsAuthUtils.cmsSessionFromHttpSession(bc, httpSessionId);
+ if (cmsSession != null) {
+ authorization = cmsSession.getAuthorization();
+ locale = cmsSession.getLocale();
+ if (log.isTraceEnabled())
+ log.trace("Retrieved authorization from " + cmsSession);
+ }
+ } else {
+ authorization = (Authorization) request.getAttribute(HttpContext.AUTHORIZATION);
+ if (authorization == null) {// search by session ID
+ RemoteAuthSession httpSession = request.getSession();
+ if (httpSession == null) {
+ // TODO make sure this is always safe
+ if (log.isTraceEnabled())
+ log.trace("Create http session");
+ httpSession = request.createSession();
+ }
+ String httpSessionId = httpSession.getId();
+// if (log.isTraceEnabled())
+// log.trace("HTTP login: " + request.getPathInfo() + " #" + httpSessionId);
+ CmsSessionImpl cmsSession = CmsAuthUtils.cmsSessionFromHttpSession(bc, httpSessionId);
+ if (cmsSession != null) {
+ authorization = cmsSession.getAuthorization();
+ locale = cmsSession.getLocale();
+ if (log.isTraceEnabled())
+ log.trace("Retrieved authorization from " + cmsSession);
+ }
+ }
+ sharedState.put(CmsAuthUtils.SHARED_STATE_HTTP_REQUEST, request);
+ extractHttpAuth(request);
+ extractClientCertificate(request);
+ }
+ if (authorization == null) {
+ if (log.isTraceEnabled())
+ log.trace("HTTP login: " + false);
+ return false;
+ } else {
+ if (log.isTraceEnabled())
+ log.trace("HTTP login: " + true);
+ request.setAttribute(HttpContext.AUTHORIZATION, authorization);
+ return true;
+ }
+ }
+
+ @Override
+ public boolean commit() throws LoginException {
+ byte[] outToken = (byte[]) sharedState.get(CmsAuthUtils.SHARED_STATE_SPNEGO_OUT_TOKEN);
+ if (outToken != null) {
+ response.setHeader(CmsAuthUtils.HEADER_WWW_AUTHENTICATE,
+ "Negotiate " + java.util.Base64.getEncoder().encodeToString(outToken));
+ }
+
+ if (authorization != null) {
+ // Locale locale = request.getLocale();
+ if (locale == null && request != null)
+ locale = request.getLocale();
+ if (locale != null)
+ subject.getPublicCredentials().add(locale);
+ CmsAuthUtils.addAuthorization(subject, authorization);
+ CmsAuthUtils.registerSessionAuthorization(request, subject, authorization, locale);
+ cleanUp();
+ return true;
+ } else {
+ cleanUp();
+ return false;
+ }
+ }
+
+ @Override
+ public boolean abort() throws LoginException {
+ cleanUp();
+ return false;
+ }
+
+ private void cleanUp() {
+ authorization = null;
+ request = null;
+ }
+
+ @Override
+ public boolean logout() throws LoginException {
+ cleanUp();
+ return true;
+ }
+
+ private void extractHttpAuth(final RemoteAuthRequest httpRequest) {
+ String authHeader = httpRequest.getHeader(CmsAuthUtils.HEADER_AUTHORIZATION);
+ extractHttpAuth(authHeader);
+ }
+
+ private void extractHttpAuth(String authHeader) {
+ if (authHeader != null) {
+ StringTokenizer st = new StringTokenizer(authHeader);
+ if (st.hasMoreTokens()) {
+ String basic = st.nextToken();
+ if (basic.equalsIgnoreCase("Basic")) {
+ try {
+ // TODO manipulate char[]
+ Base64.Decoder decoder = Base64.getDecoder();
+ String credentials = new String(decoder.decode(st.nextToken()), "UTF-8");
+ // log.debug("Credentials: " + credentials);
+ int p = credentials.indexOf(":");
+ if (p != -1) {
+ final String login = credentials.substring(0, p).trim();
+ final char[] password = credentials.substring(p + 1).trim().toCharArray();
+ sharedState.put(CmsAuthUtils.SHARED_STATE_NAME, login);
+ sharedState.put(CmsAuthUtils.SHARED_STATE_PWD, password);
+ } else {
+ throw new IllegalStateException("Invalid authentication token");
+ }
+ } catch (Exception e) {
+ throw new IllegalStateException("Couldn't retrieve authentication", e);
+ }
+ } else if (basic.equalsIgnoreCase("Negotiate")) {
+ String spnegoToken = st.nextToken();
+ Base64.Decoder decoder = Base64.getDecoder();
+ byte[] authToken = decoder.decode(spnegoToken);
+ sharedState.put(CmsAuthUtils.SHARED_STATE_SPNEGO_TOKEN, authToken);
+ }
+ }
+ }
+
+ // auth token
+ // String mail = request.getParameter(LdapAttrs.mail.name());
+ // String authPassword = request.getParameter(LdapAttrs.authPassword.name());
+ // if (authPassword != null) {
+ // sharedState.put(CmsAuthUtils.SHARED_STATE_PWD, authPassword);
+ // if (mail != null)
+ // sharedState.put(CmsAuthUtils.SHARED_STATE_NAME, mail);
+ // }
+ }
+
+ private void extractClientCertificate(RemoteAuthRequest req) {
+ X509Certificate[] certs = (X509Certificate[]) req.getAttribute("javax.servlet.request.X509Certificate");
+ if (null != certs && certs.length > 0) {// Servlet container verified the client certificate
+ String certDn = certs[0].getSubjectX500Principal().getName();
+ sharedState.put(CmsAuthUtils.SHARED_STATE_NAME, certDn);
+ sharedState.put(CmsAuthUtils.SHARED_STATE_CERTIFICATE_CHAIN, certs);
+ if (log.isDebugEnabled())
+ log.debug("Client certificate " + certDn + " verified by servlet container");
+ } // Reverse proxy verified the client certificate
+ String clientDnHttpHeader = Activator.getHttpProxySslHeader();
+ if (clientDnHttpHeader != null) {
+ String certDn = req.getHeader(clientDnHttpHeader);
+ // TODO retrieve more cf. https://httpd.apache.org/docs/current/mod/mod_ssl.html
+ // String issuerDn = req.getHeader("SSL_CLIENT_I_DN");
+ if (certDn != null && !certDn.trim().equals("(null)")) {
+ sharedState.put(CmsAuthUtils.SHARED_STATE_NAME, certDn);
+ sharedState.put(CmsAuthUtils.SHARED_STATE_CERTIFICATE_CHAIN, "");
+ if (log.isDebugEnabled())
+ log.debug("Client certificate " + certDn + " verified by reverse proxy");
+ }
+ }
+ }
+
+}
projects / lgpl / argeo-commons.git / blobdiff