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/*******************************************************************************
* Copyright (c) 2013 Boeing.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Boeing - initial API and implementation
*******************************************************************************/
package org.eclipse.osee.authorization.admin.internal;
import static org.eclipse.osee.authorization.admin.internal.AuthorizationUtil.normalize;
import java.security.Principal;
import java.util.Date;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;
import org.eclipse.osee.authorization.admin.Authority;
import org.eclipse.osee.authorization.admin.Authorization;
import org.eclipse.osee.authorization.admin.AuthorizationAdmin;
import org.eclipse.osee.authorization.admin.AuthorizationConfiguration;
import org.eclipse.osee.authorization.admin.AuthorizationConfigurationBuilder;
import org.eclipse.osee.authorization.admin.AuthorizationConstants;
import org.eclipse.osee.authorization.admin.AuthorizationData;
import org.eclipse.osee.authorization.admin.AuthorizationOverride;
import org.eclipse.osee.authorization.admin.AuthorizationProvider;
import org.eclipse.osee.authorization.admin.AuthorizationRequest;
import org.eclipse.osee.framework.jdk.core.util.Conditions;
import org.eclipse.osee.framework.jdk.core.util.Strings;
import org.eclipse.osee.logger.Log;
/**
* @author Roberto E. Escobar
*/
public class AuthorizationAdminImpl implements AuthorizationAdmin {
private static final Authority PERMIT_ALL_OVERRIDE = new PermitAllAuthority();
private static final Authority DENY_ALL_OVERRIDE = new DenyAllAuthority();
private final Map<String, AuthorizationProvider> providers = new ConcurrentHashMap<String, AuthorizationProvider>();
private Log logger;
private AuthorizationConfiguration config;
public void setLogger(Log logger) {
this.logger = logger;
}
public void start(Map<String, Object> properties) {
logger.trace("Starting AuthorizationAdminImpl...");
update(properties);
}
public void stop() {
logger.trace("Stopping AuthorizationAdminImpl...");
config = null;
}
public void update(Map<String, Object> properties) {
logger.trace("Updating AuthorizationAdminImpl...");
config = AuthorizationConfigurationBuilder.newBuilder()//
.properties(properties)//
.build();
}
public void addAuthorizationProvider(AuthorizationProvider provider) {
String providerId = provider.getScheme();
providerId = AuthorizationUtil.normalize(providerId);
providers.put(providerId, provider);
}
public void removeAuthorizationProvider(AuthorizationProvider provider) {
String providerId = provider.getScheme();
providerId = AuthorizationUtil.normalize(providerId);
providers.remove(providerId);
}
@Override
public Iterable<String> getAvailableSchemes() {
return AuthorizationUtil.unmodifiableSortedIterable(providers.keySet());
}
@Override
public Iterable<String> getAllowedSchemes() {
return config.getAllowedSchemes();
}
@Override
public boolean isSchemeAllowed(String schemeType) {
boolean isAllowed = false;
if (Strings.isValid(schemeType)) {
String toMatch = normalize(schemeType);
for (String scheme : getAllowedSchemes()) {
isAllowed = scheme.equals(toMatch);
if (isAllowed) {
break;
}
}
}
return isAllowed;
}
@Override
public Authorization authorize(AuthorizationRequest request) {
logger.debug("Authorization Requested: [%s]", request);
String scheme = getScheme(request);
checkSchemeAllowed(scheme);
AuthorizationProvider provider = getAuthorizationProvider(scheme);
checkProvider(scheme, provider);
AuthorizationData data = provider.authorize(request);
checkAuthorizationData(provider.getScheme(), data);
Authority authority = getAuthority(config.getOverride(), data);
checkAuthority(provider.getScheme(), authority);
String authScheme = authority.getScheme();
Date date = request.getRequestDate();
boolean secure = request.isSecure();
Principal principal = data != null ? data.getPrincipal() : null;
return new AuthorizationImpl(authScheme, date, secure, principal, authority);
}
private String getScheme(AuthorizationRequest request) {
String toReturn = request.getAuthorizationType();
if (!Strings.isValid(toReturn) || isNoneAllowed()) {
toReturn = AuthorizationConstants.NONE_AUTHORIZATION_PROVIDER;
}
return toReturn;
}
private boolean isNoneAllowed() {
boolean result = false;
String toFind = AuthorizationConstants.NONE_AUTHORIZATION_PROVIDER;
for (String allowed : getAllowedSchemes()) {
result = toFind.equalsIgnoreCase(allowed);
if (result) {
break;
}
}
return result;
}
private AuthorizationProvider getAuthorizationProvider(String scheme) {
String toGet = normalize(scheme);
return providers.get(toGet);
}
private Authority getAuthority(AuthorizationOverride override, AuthorizationData data) {
Authority toReturn = null;
switch (override) {
case DENY_ALL:
toReturn = DENY_ALL_OVERRIDE;
break;
case PERMIT_ALL:
toReturn = PERMIT_ALL_OVERRIDE;
break;
default:
toReturn = data.getAuthority();
break;
}
return toReturn;
}
private void checkSchemeAllowed(String schemeType) {
Conditions.checkExpressionFailOnTrue(!isSchemeAllowed(schemeType),
"Authorization Error - scheme [%s] is not allowed. Schemes available %s.", schemeType, getAllowedSchemes());
}
private void checkProvider(String scheme, AuthorizationProvider provider) {
Conditions.checkExpressionFailOnTrue(provider == null,
"Authentication Error - scheme [%s] returned null provider", scheme);
}
private void checkAuthorizationData(String scheme, AuthorizationData data) {
Conditions.checkExpressionFailOnTrue(data == null,
"Authentication Error - scheme [%s] returned null authorization", scheme);
}
private void checkAuthority(String scheme, Authority data) {
Conditions.checkExpressionFailOnTrue(data == null, "Authentication Error - scheme [%s] returned null authority",
scheme);
}
}
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