forked from community/device-mgt-core
ayyoob
9 years ago
parent
c0240c5cbc
commit
ba47af3186
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package org.wso2.carbon.apimgt.application.extension.api.filter;
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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.wso2.carbon.apimgt.application.extension.api.util.APIUtil;
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import org.wso2.carbon.context.PrivilegedCarbonContext;
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import org.wso2.carbon.user.api.UserRealm;
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import org.wso2.carbon.user.api.UserStoreException;
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import javax.servlet.*;
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import javax.servlet.http.HttpServletRequest;
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import javax.servlet.http.HttpServletResponse;
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import javax.xml.bind.JAXBContext;
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import javax.xml.bind.JAXBException;
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import javax.xml.bind.Unmarshaller;
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import java.io.File;
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import java.io.IOException;
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import java.io.InputStream;
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import java.util.List;
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/**
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* this filter check for permission for the request
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*/
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public class ApiPermissionFilter implements Filter{
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private static final Log log = LogFactory.getLog(ApiPermissionFilter.class);
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private static final String UI_EXECUTE = "ui.execute";
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private static final String PERMISSION_CONFIG_PATH = File.separator + "META-INF" + File.separator
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+ "permissions.xml";
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private static final String PERMISSION_PREFIX = "/permission/admin";
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private static List<Permission> permissions;
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private static final String WEBAPP_CONTEXT = "/api-application-registration";
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@Override
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public void init(FilterConfig filterConfig) throws ServletException {
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InputStream permissionStream = filterConfig.getServletContext().getResourceAsStream(PERMISSION_CONFIG_PATH);
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if (permissionStream != null) {
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try {
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JAXBContext cdmContext = JAXBContext.newInstance(PermissionConfiguration.class);
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Unmarshaller unmarshaller = cdmContext.createUnmarshaller();
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PermissionConfiguration permissionConfiguration = (PermissionConfiguration)
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unmarshaller.unmarshal(permissionStream);
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permissions = permissionConfiguration.getPermissions();
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} catch (JAXBException e) {
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log.error("invalid permissions.xml", e);
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}
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}
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}
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@Override
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public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain)
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throws IOException, ServletException {
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if (servletRequest instanceof HttpServletRequest) {
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String uri = ((HttpServletRequest)servletRequest).getRequestURI();
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boolean status = false;
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if (uri.contains("register/tenants")) {
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String urlPermission = getPermission("/register/tenants/*");
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if (urlPermission != null) {
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status = isUserAuthorized(PERMISSION_PREFIX + urlPermission, UI_EXECUTE);
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}
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} else {
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String urlPermission = getPermission(uri);
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if (urlPermission != null) {
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status = isUserAuthorized(PERMISSION_PREFIX + urlPermission, UI_EXECUTE);
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}
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}
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if (status) {
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filterChain.doFilter(servletRequest, servletResponse);
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} else {
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HttpServletResponse res = (HttpServletResponse) servletResponse;
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res.setStatus(HttpServletResponse.SC_FORBIDDEN);
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return;
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}
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} else {
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HttpServletResponse res = (HttpServletResponse) servletResponse;
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res.setStatus(HttpServletResponse.SC_FORBIDDEN);
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return;
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}
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}
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@Override
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public void destroy() {
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//do nothing
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}
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private static String getPermission(String url) {
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if (permissions != null) {
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for (int i = 0; i < permissions.size(); i++) {
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Permission permission = permissions.get(i);
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if ((WEBAPP_CONTEXT + permission.getUrl()).equals(url)) {
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return permission.getPath();
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}
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}
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}
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return null;
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}
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/**
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* Check whether the client is authorized with the given permission and action.
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* @param permission Carbon permission that requires for the use
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* @param action Carbon permission action that requires for the given permission.
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* @return boolean - true if user is authorized else return false.
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*/
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private boolean isUserAuthorized(String permission, String action) {
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PrivilegedCarbonContext context = PrivilegedCarbonContext.getThreadLocalCarbonContext();
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String username = context.getUsername();
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try {
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UserRealm userRealm = APIUtil.getRealmService().getTenantUserRealm(PrivilegedCarbonContext
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.getThreadLocalCarbonContext().getTenantId());
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return userRealm.getAuthorizationManager().isUserAuthorized(username, permission, action);
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} catch (UserStoreException e) {
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String errorMsg = String.format("Unable to authorize the user : %s", username, e);
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log.error(errorMsg, e);
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return false;
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}
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}
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}
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@ -0,0 +1,60 @@
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/*
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* Copyright (c) 2015, WSO2 Inc. (http://www.wso2.org) All Rights Reserved.
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*
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* WSO2 Inc. licenses this file to you under the Apache License,
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* Version 2.0 (the "License"); you may not use this file except
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* 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,
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* software distributed under the License is distributed on an
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* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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* KIND, either express or implied. See the License for the
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* specific language governing permissions and limitations
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* under the License.
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*/
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package org.wso2.carbon.apimgt.application.extension.api.filter;
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import javax.xml.bind.annotation.XmlElement;
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import javax.xml.bind.annotation.XmlRootElement;
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/**
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* This class represents the information related to permission.
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*/
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@XmlRootElement (name = "Permission")
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public class Permission {
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private String path; // permission string
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private String url; // url of the resource
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private String method; // http method
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public String getPath() {
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return path;
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}
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@XmlElement (name = "path", required = true)
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public void setPath(String path) {
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this.path = path;
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}
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public String getUrl() {
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return url;
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}
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@XmlElement (name = "url", required = true)
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public void setUrl(String url) {
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this.url = url;
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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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@XmlElement (name = "method", required = true)
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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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@ -0,0 +1,41 @@
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/*
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* Copyright (c) 2015, WSO2 Inc. (http://www.wso2.org) All Rights Reserved.
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*
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* WSO2 Inc. licenses this file to you under the Apache License,
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* Version 2.0 (the "License"); you may not use this file except
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* 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,
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* software distributed under the License is distributed on an
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* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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* KIND, either express or implied. See the License for the
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* specific language governing permissions and limitations
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* under the License.
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*/
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package org.wso2.carbon.apimgt.application.extension.api.filter;
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import javax.xml.bind.annotation.XmlElement;
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import javax.xml.bind.annotation.XmlRootElement;
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import java.util.List;
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/**
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* This class represents the information related to permission configuration.
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*/
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@XmlRootElement (name = "PermissionConfiguration")
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public class PermissionConfiguration {
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private List<Permission> permissions;
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public List<Permission> getPermissions() {
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return permissions;
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}
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@XmlElement (name = "Permission", required = true)
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public void setPermissions(List<Permission> permissions) {
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this.permissions = permissions;
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}
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}
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