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@@ -0,0 +1,536 @@
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+/* Copyright 2004, 2005, 2006 Acegi Technology Pty Limited
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+ *
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+ * Licensed under the Apache License, Version 2.0 (the "License");
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+ * you may not use this file except in compliance with the License.
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+ * You may obtain a copy of the License at
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+ *
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+ * http://www.apache.org/licenses/LICENSE-2.0
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+ *
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+ * Unless required by applicable law or agreed to in writing, software
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+ * distributed under the License is distributed on an "AS IS" BASIS,
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+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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+ * See the License for the specific language governing permissions and
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+ * limitations under the License.
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+ */
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+
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+package org.springframework.security.web.access;
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+
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+import java.io.BufferedReader;
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+import java.io.IOException;
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+import java.io.PrintWriter;
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+import java.io.UnsupportedEncodingException;
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+import java.security.Principal;
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+import java.util.Enumeration;
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+import java.util.List;
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+import java.util.Locale;
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+import java.util.Map;
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+
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+import javax.servlet.FilterChain;
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+import javax.servlet.RequestDispatcher;
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+import javax.servlet.ServletException;
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+import javax.servlet.ServletInputStream;
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+import javax.servlet.ServletOutputStream;
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+import javax.servlet.ServletRequest;
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+import javax.servlet.ServletResponse;
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+import javax.servlet.http.Cookie;
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+import javax.servlet.http.HttpServletRequest;
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+import javax.servlet.http.HttpServletResponse;
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+import javax.servlet.http.HttpSession;
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+
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+import org.apache.commons.logging.Log;
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+import org.apache.commons.logging.LogFactory;
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+import org.springframework.security.access.AccessDeniedException;
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+import org.springframework.security.access.ConfigAttribute;
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+import org.springframework.security.access.intercept.AbstractSecurityInterceptor;
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+import org.springframework.security.core.Authentication;
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+import org.springframework.security.web.FilterInvocation;
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+import org.springframework.util.Assert;
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+
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+
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+/**
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+ * Allows users to determine whether they have privileges for a given web URI.
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+ *
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+ * @author Ben Alex
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+ * @author Luke Taylor
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+ * @version $Id$
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+ * @since 3.0
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+ */
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+public class DefaultWebInvocationPrivilegeEvaluator implements WebInvocationPrivilegeEvaluator {
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+ //~ Static fields/initializers =====================================================================================
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+
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+ protected static final Log logger = LogFactory.getLog(DefaultWebInvocationPrivilegeEvaluator.class);
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+
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+ static final FilterChain DUMMY_CHAIN = new FilterChain() {
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+ public void doFilter(ServletRequest req, ServletResponse res) throws IOException, ServletException {
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+ throw new UnsupportedOperationException("DefaultWebInvocationPrivilegeEvaluator does not support filter chains");
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+ }
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+ };
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+
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+ static final HttpServletResponse DUMMY_RESPONSE = new DummyResponse();
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+
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+ //~ Instance fields ================================================================================================
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+
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+ private AbstractSecurityInterceptor securityInterceptor;
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+
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+ //~ Constructors ===================================================================================================
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+
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+ public DefaultWebInvocationPrivilegeEvaluator(AbstractSecurityInterceptor securityInterceptor) {
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+ Assert.notNull(securityInterceptor, "SecurityInterceptor cannot be null");
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+ Assert.isTrue(FilterInvocation.class.equals(securityInterceptor.getSecureObjectClass()),
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+ "AbstractSecurityInterceptor does not support FilterInvocations");
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+ Assert.notNull(securityInterceptor.getAccessDecisionManager(),
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+ "AbstractSecurityInterceptor must provide a non-null AccessDecisionManager");
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+
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+ this.securityInterceptor = securityInterceptor;
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+ }
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+
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+ //~ Methods ========================================================================================================
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+
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+ /**
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+ * Determines whether the user represented by the supplied <tt>Authentication</tt> object is
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+ * allowed to invoke the supplied URI.
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+ *
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+ * @param uri the URI excluding the context path (a default context path setting will be used)
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+ */
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+ public boolean isAllowed(String uri, Authentication authentication) {
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+ return isAllowed(null, uri, null, authentication);
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+ }
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+
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+ /**
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+ * Determines whether the user represented by the supplied <tt>Authentication</tt> object is
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+ * allowed to invoke the supplied URI, with the given .
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+ * <p>
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+ * Note the default implementation of <tt>FilterInvocationSecurityMetadataSource</tt> disregards the
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+ * <code>contextPath</code> when evaluating which secure object metadata applies to a given
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+ * request URI, so generally the <code>contextPath</code> is unimportant unless you
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+ * are using a custom <code>FilterInvocationSecurityMetadataSource</code>.
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+ *
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+ * @param uri the URI excluding the context path
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+ * @param contextPath the context path (may be null, in which case a default value will be used).
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+ * @param method the HTTP method (or null, for any method)
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+ * @param authentication the <tt>Authentication</tt> instance whose authorities should be used in evaluation
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+ * whether access should be granted.
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+ * @return true if access is allowed, false if denied
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+ */
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+ public boolean isAllowed(String contextPath, String uri, String method, Authentication authentication) {
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+ Assert.notNull(uri, "uri parameter is required");
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+
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+ if (contextPath == null) {
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+ contextPath = "/ctxpath";
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+ }
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+
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+ FilterInvocation fi = createFilterInvocation(contextPath, uri, method);
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+ List<ConfigAttribute> attrs = securityInterceptor.obtainSecurityMetadataSource().getAttributes(fi);
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+
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+ if (attrs == null) {
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+ if (securityInterceptor.isRejectPublicInvocations()) {
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+ return false;
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+ }
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+
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+ return true;
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+ }
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+
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+ if ((authentication == null) || (authentication.getAuthorities() == null)
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+ || authentication.getAuthorities().isEmpty()) {
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+ return false;
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+ }
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+
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+ try {
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+ securityInterceptor.getAccessDecisionManager().decide(authentication, fi, attrs);
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+ } catch (AccessDeniedException unauthorized) {
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+ if (logger.isDebugEnabled()) {
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+ logger.debug(fi.toString() + " denied for " + authentication.toString(), unauthorized);
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+ }
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+
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+ return false;
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+ }
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+
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+ return true;
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+ }
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+
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+ private FilterInvocation createFilterInvocation(String contextPath, String uri, String method) {
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+ Assert.hasText(contextPath, "contextPath required");
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+ Assert.hasText(uri, "URI required");
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+
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+ DummyRequest req = new DummyRequest();
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+ req.setRequestURI(contextPath + uri);
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+ req.setContextPath(contextPath);
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+ req.setServletPath(null);
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+ req.setMethod(method);
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+
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+ return new FilterInvocation(req, DUMMY_RESPONSE, DUMMY_CHAIN);
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+ }
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+}
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+
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+@SuppressWarnings("unchecked")
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+class DummyRequest implements HttpServletRequest {
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+ private String requestURI;
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+ private String contextPath = "";
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+ private String servletPath;
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+ private String method;
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+
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+ public void setRequestURI(String requestURI) {
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+ this.requestURI = requestURI;
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+ }
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+
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+ public String getRequestURI() {
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+ return requestURI;
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+ }
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+
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+ public void setContextPath(String contextPath) {
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+ this.contextPath = contextPath;
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+ }
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+
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+ public String getContextPath() {
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+ return contextPath;
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+ }
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+
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+ public void setServletPath(String servletPath) {
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+ this.servletPath = servletPath;
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+ }
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+
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+ public String getServletPath() {
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+ return servletPath;
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+ }
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+
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+ public void setMethod(String method) {
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+ this.method = method;
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+ }
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+
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+ public String getMethod() {
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+ return method;
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+ }
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+
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+ public String getPathInfo() {
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+ return null;
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+ }
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+
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+ public String getQueryString() {
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+ return null;
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+ }
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+
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+ public String getAuthType() {
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+ throw new UnsupportedOperationException();
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+ }
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+
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+ public Cookie[] getCookies() {
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+ throw new UnsupportedOperationException();
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+ }
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+
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+ public long getDateHeader(String name) {
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+ throw new UnsupportedOperationException();
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+ }
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+
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+ public String getHeader(String name) {
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+ throw new UnsupportedOperationException();
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+ }
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+
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+ public Enumeration getHeaderNames() {
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+ throw new UnsupportedOperationException();
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+ }
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+
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+ public Enumeration getHeaders(String name) {
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+ throw new UnsupportedOperationException();
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+ }
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+
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+ public int getIntHeader(String name) {
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+ throw new UnsupportedOperationException();
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+ }
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+
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+ public String getPathTranslated() {
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+ throw new UnsupportedOperationException();
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+ }
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+
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+ public String getRemoteUser() {
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+ throw new UnsupportedOperationException();
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+ }
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+
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+ public StringBuffer getRequestURL() {
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+ throw new UnsupportedOperationException();
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+ }
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+
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+ public String getRequestedSessionId() {
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+ throw new UnsupportedOperationException();
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+ }
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+
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+ public HttpSession getSession() {
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+ throw new UnsupportedOperationException();
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+ }
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+
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+ public HttpSession getSession(boolean create) {
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+ throw new UnsupportedOperationException();
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+ }
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+
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+ public Principal getUserPrincipal() {
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+ throw new UnsupportedOperationException();
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+ }
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+
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+ public boolean isRequestedSessionIdFromCookie() {
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+ throw new UnsupportedOperationException();
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+ }
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+
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+ public boolean isRequestedSessionIdFromURL() {
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+ throw new UnsupportedOperationException();
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+ }
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+
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+ public boolean isRequestedSessionIdFromUrl() {
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+ throw new UnsupportedOperationException();
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+ }
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+
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+ public boolean isRequestedSessionIdValid() {
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+ throw new UnsupportedOperationException();
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+ }
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+
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+ public boolean isUserInRole(String role) {
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+ throw new UnsupportedOperationException();
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+ }
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+
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+ public Object getAttribute(String name) {
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+ throw new UnsupportedOperationException();
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+ }
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+
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+ public Enumeration getAttributeNames() {
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+ throw new UnsupportedOperationException();
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+ }
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+
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+ public String getCharacterEncoding() {
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+ throw new UnsupportedOperationException();
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+ }
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+
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+ public int getContentLength() {
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+ throw new UnsupportedOperationException();
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+ }
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+
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+ public String getContentType() {
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+ throw new UnsupportedOperationException();
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+ }
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+
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+ public ServletInputStream getInputStream() throws IOException {
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+ throw new UnsupportedOperationException();
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+ }
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+
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+ public String getLocalAddr() {
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+ throw new UnsupportedOperationException();
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+
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+ }
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+
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+ public String getLocalName() {
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+ throw new UnsupportedOperationException();
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+ }
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+
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+ public int getLocalPort() {
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+ throw new UnsupportedOperationException();
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+ }
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+
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+ public Locale getLocale() {
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+ throw new UnsupportedOperationException();
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+ }
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+
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+ public Enumeration getLocales() {
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+ throw new UnsupportedOperationException();
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+ }
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+
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+ public String getParameter(String name) {
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+ throw new UnsupportedOperationException();
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+ }
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+
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+ public Map getParameterMap() {
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+ throw new UnsupportedOperationException();
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+ }
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+
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+ public Enumeration getParameterNames() {
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+ throw new UnsupportedOperationException();
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+ }
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+
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+ public String[] getParameterValues(String name) {
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+ throw new UnsupportedOperationException();
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+ }
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+
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+ public String getProtocol() {
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+ throw new UnsupportedOperationException();
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+ }
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+
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+ public BufferedReader getReader() throws IOException {
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+ throw new UnsupportedOperationException();
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+ }
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+
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+ public String getRealPath(String path) {
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+ throw new UnsupportedOperationException();
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+ }
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+
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+ public String getRemoteAddr() {
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+ throw new UnsupportedOperationException();
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+ }
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+
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+ public String getRemoteHost() {
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+ throw new UnsupportedOperationException();
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+ }
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+
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+ public int getRemotePort() {
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+ throw new UnsupportedOperationException();
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+ }
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+
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+ public RequestDispatcher getRequestDispatcher(String path) {
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+ throw new UnsupportedOperationException();
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+ }
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+
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+ public String getScheme() {
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+ throw new UnsupportedOperationException();
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+ }
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+
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+ public String getServerName() {
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+ throw new UnsupportedOperationException();
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+ }
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+
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+ public int getServerPort() {
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+ throw new UnsupportedOperationException();
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+ }
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+
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+ public boolean isSecure() {
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+ throw new UnsupportedOperationException();
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+ }
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+
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+ public void removeAttribute(String name) {
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+ throw new UnsupportedOperationException();
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+ }
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+
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+ public void setAttribute(String name, Object o) {
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+ throw new UnsupportedOperationException();
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+ }
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+
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+ public void setCharacterEncoding(String env) throws UnsupportedEncodingException {
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+ throw new UnsupportedOperationException();
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+ }
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+}
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+
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+class DummyResponse implements HttpServletResponse {
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+ public void addCookie(Cookie cookie) {
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+ throw new UnsupportedOperationException();
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+ }
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+
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+ public void addDateHeader(String name, long date) {
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+ throw new UnsupportedOperationException();
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+ }
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+
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+ public void addHeader(String name, String value) {
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+ throw new UnsupportedOperationException();
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+ }
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+
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+ public void addIntHeader(String name, int value) {
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+ throw new UnsupportedOperationException();
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+ }
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+
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+ public boolean containsHeader(String name) {
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+ throw new UnsupportedOperationException();
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+ }
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+
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+ public String encodeRedirectURL(String url) {
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+ throw new UnsupportedOperationException();
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+ }
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+
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+ public String encodeRedirectUrl(String url) {
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+ throw new UnsupportedOperationException();
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+ }
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+
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+ public String encodeURL(String url) {
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+ throw new UnsupportedOperationException();
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+ }
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+
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+ public String encodeUrl(String url) {
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+ throw new UnsupportedOperationException();
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+ }
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+
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+ public void sendError(int sc) throws IOException {
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+ throw new UnsupportedOperationException();
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+
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+ }
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+
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+ public void sendError(int sc, String msg) throws IOException {
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+ throw new UnsupportedOperationException();
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+ }
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+
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+ public void sendRedirect(String location) throws IOException {
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+ throw new UnsupportedOperationException();
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+ }
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+
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+ public void setDateHeader(String name, long date) {
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+ throw new UnsupportedOperationException();
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+ }
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+
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+ public void setHeader(String name, String value) {
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+ throw new UnsupportedOperationException();
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+ }
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+
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|
+ public void setIntHeader(String name, int value) {
|
|
|
+ throw new UnsupportedOperationException();
|
|
|
+ }
|
|
|
+
|
|
|
+ public void setStatus(int sc) {
|
|
|
+ throw new UnsupportedOperationException();
|
|
|
+ }
|
|
|
+
|
|
|
+ public void setStatus(int sc, String sm) {
|
|
|
+ throw new UnsupportedOperationException();
|
|
|
+ }
|
|
|
+
|
|
|
+ public void flushBuffer() throws IOException {
|
|
|
+ throw new UnsupportedOperationException();
|
|
|
+ }
|
|
|
+
|
|
|
+ public int getBufferSize() {
|
|
|
+ throw new UnsupportedOperationException();
|
|
|
+ }
|
|
|
+
|
|
|
+ public String getCharacterEncoding() {
|
|
|
+ throw new UnsupportedOperationException();
|
|
|
+ }
|
|
|
+
|
|
|
+ public String getContentType() {
|
|
|
+ throw new UnsupportedOperationException();
|
|
|
+ }
|
|
|
+
|
|
|
+ public Locale getLocale() {
|
|
|
+ throw new UnsupportedOperationException();
|
|
|
+ }
|
|
|
+
|
|
|
+ public ServletOutputStream getOutputStream() throws IOException {
|
|
|
+ throw new UnsupportedOperationException();
|
|
|
+ }
|
|
|
+
|
|
|
+ public PrintWriter getWriter() throws IOException {
|
|
|
+ throw new UnsupportedOperationException();
|
|
|
+ }
|
|
|
+
|
|
|
+ public boolean isCommitted() {
|
|
|
+ throw new UnsupportedOperationException();
|
|
|
+ }
|
|
|
+
|
|
|
+ public void reset() {
|
|
|
+ throw new UnsupportedOperationException();
|
|
|
+ }
|
|
|
+
|
|
|
+ public void resetBuffer() {
|
|
|
+ throw new UnsupportedOperationException();
|
|
|
+ }
|
|
|
+
|
|
|
+ public void setBufferSize(int size) {
|
|
|
+ throw new UnsupportedOperationException();
|
|
|
+ }
|
|
|
+
|
|
|
+ public void setCharacterEncoding(String charset) {
|
|
|
+ throw new UnsupportedOperationException();
|
|
|
+ }
|
|
|
+
|
|
|
+ public void setContentLength(int len) {
|
|
|
+ throw new UnsupportedOperationException();
|
|
|
+ }
|
|
|
+
|
|
|
+ public void setContentType(String type) {
|
|
|
+ throw new UnsupportedOperationException();
|
|
|
+ }
|
|
|
+
|
|
|
+ public void setLocale(Locale loc) {
|
|
|
+ throw new UnsupportedOperationException();
|
|
|
+ }
|
|
|
+}
|
|
|
+
|
Luke Taylor