70: Authetication Token

Task-Url: https://support.d4science.org/issues/70

git-svn-id: http://svn.research-infrastructures.eu/public/d4science/gcube/trunk/Common/authorization-common-library@115160 82a268e6-3cf1-43bd-a215-b396298e98cf

.classpath

@@ -0,0 +1,36 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<classpath>
+	<classpathentry kind="src" output="target/classes" path="src/main/java">
+		<attributes>
+			<attribute name="optional" value="true"/>
+			<attribute name="maven.pomderived" value="true"/>
+		</attributes>
+	</classpathentry>
+	<classpathentry excluding="**" kind="src" output="target/classes" path="src/main/resources">
+		<attributes>
+			<attribute name="maven.pomderived" value="true"/>
+		</attributes>
+	</classpathentry>
+	<classpathentry kind="src" output="target/test-classes" path="src/test/java">
+		<attributes>
+			<attribute name="optional" value="true"/>
+			<attribute name="maven.pomderived" value="true"/>
+		</attributes>
+	</classpathentry>
+	<classpathentry excluding="**" kind="src" output="target/test-classes" path="src/test/resources">
+		<attributes>
+			<attribute name="maven.pomderived" value="true"/>
+		</attributes>
+	</classpathentry>
+	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-1.7">
+		<attributes>
+			<attribute name="maven.pomderived" value="true"/>
+		</attributes>
+	</classpathentry>
+	<classpathentry kind="con" path="org.eclipse.m2e.MAVEN2_CLASSPATH_CONTAINER">
+		<attributes>
+			<attribute name="maven.pomderived" value="true"/>
+		</attributes>
+	</classpathentry>
+	<classpathentry kind="output" path="target/classes"/>
+</classpath>

.project

@@ -0,0 +1,23 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<projectDescription>
+	<name>authorization-common-library</name>
+	<comment></comment>
+	<projects>
+	</projects>
+	<buildSpec>
+		<buildCommand>
+			<name>org.eclipse.jdt.core.javabuilder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
+		<buildCommand>
+			<name>org.eclipse.m2e.core.maven2Builder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
+	</buildSpec>
+	<natures>
+		<nature>org.eclipse.jdt.core.javanature</nature>
+		<nature>org.eclipse.m2e.core.maven2Nature</nature>
+	</natures>
+</projectDescription>

pom.xml

@@ -2,7 +2,7 @@
 	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
 	<modelVersion>4.0.0</modelVersion>
 	<groupId>org.gcube.common</groupId>
-	<artifactId>authorization-library</artifactId>
+	<artifactId>common-authorization</artifactId>
 	<version>1.0.0-SNAPSHOT</version>
 	<name>authorization service common library</name>
 
@@ -16,6 +16,19 @@
 		<distroDirectory>distro</distroDirectory>
 	</properties>
 
+	<dependencies>
+		<dependency>
+			<groupId>org.gcube.core</groupId>
+			<artifactId>common-scope</artifactId>
+			<version>[1.0.0-SNAPSHOT, 2.0.0-SNAPSHOT)</version>
+		</dependency>
+		<dependency>
+			<groupId>org.slf4j</groupId>
+			<artifactId>slf4j-api</artifactId>
+			<version>1.7.5</version>
+		</dependency>
+	</dependencies>
+
 	<build>
 		<plugins>
 			<plugin>

src/main/java/org/gcube/common/authorization/library/AuthorizationEntry.java

@@ -1,5 +1,7 @@
 package org.gcube.common.authorization.library;
 
+import java.util.List;
+
 import javax.xml.bind.annotation.XmlAccessType;
 import javax.xml.bind.annotation.XmlAccessorType;
 import javax.xml.bind.annotation.XmlRootElement;
@@ -9,15 +11,15 @@ import javax.xml.bind.annotation.XmlRootElement;
 public class AuthorizationEntry {
 
 	private String userName;
-	private String role;
+	private List<String> roles;
 	private String scope;
 	
 	protected AuthorizationEntry(){}
 	
-	public AuthorizationEntry(String userName, String role, String scope) {
+	public AuthorizationEntry(String userName, List<String> roles, String scope) {
 		super();
 		this.userName = userName;
-		this.role = role;
+		this.roles = roles;
 		this.scope = scope;
 	}
 
@@ -25,8 +27,8 @@ public class AuthorizationEntry {
 		return userName;
 	}
 
-	public String getRole() {
-		return role;
+	public List<String> getRoles() {
+		return roles;
 	}
 
 	public String getScope() {
@@ -35,7 +37,7 @@ public class AuthorizationEntry {
 
 	@Override
 	public String toString() {
-		return "AuthorizationEntry [userName=" + userName + ", role=" + role
+		return "AuthorizationEntry [userName=" + userName + ", roles=" + roles
 				+ ", scope=" + scope + "]";
 	}
 	

src/main/java/org/gcube/common/authorization/library/AuthorizationInvocationHandler.java

@@ -0,0 +1,62 @@
+package org.gcube.common.authorization.library;
+
+import java.lang.reflect.InvocationHandler;
+import java.lang.reflect.Method;
+import java.util.Arrays;
+import java.util.List;
+
+import org.gcube.common.authorization.library.annotations.IsAllowedFor;
+import org.gcube.common.authorization.library.annotations.SubjectToQuota;
+import org.gcube.common.authorization.library.provider.AuthorizationProvider;
+import org.gcube.common.authorization.library.provider.Service;
+import org.gcube.common.authorization.library.provider.UserInfo;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+public class AuthorizationInvocationHandler<T, I extends T> implements InvocationHandler{
+
+	public static Logger log = LoggerFactory.getLogger(AuthorizationInvocationHandler.class);
+
+	private String handledClass;
+
+	private Object obj;
+
+	ResourceAuthorizationProxy<T, I> resourceAuthorizationProxy;
+	
+	protected AuthorizationInvocationHandler(I obj, String className, ResourceAuthorizationProxy<T, I> resourceAuthorizationProxy) {
+		handledClass = className;
+		this.obj = obj;
+		this.resourceAuthorizationProxy = resourceAuthorizationProxy;
+	}
+
+	public Object invoke(Object proxy, Method method, 
+			Object[] args) throws Throwable {
+		log.trace("calling proxed method "+method.getName()+" on "+handledClass);
+		UserInfo info = AuthorizationProvider.instance.get();
+		if(method.isAnnotationPresent(IsAllowedFor.class)){
+			IsAllowedFor allowed = method.getAnnotation(IsAllowedFor.class);
+			if (allowed.roles().length>0 && isOneElementContainedinRoles(info.getRoles(), allowed.roles())){
+				String message = "blocking method "+method.getName()+" for user "+info.getUserName()+": only roles "+Arrays.toString(allowed.roles()) +" can access";
+				log.warn(message);
+				throw new SecurityException(message);
+			}
+		}
+		if(method.isAnnotationPresent(SubjectToQuota.class)){
+			Service service = new Service(resourceAuthorizationProxy.getServiceClass(), resourceAuthorizationProxy.getServiceName());			
+			if (info.getBannedServices().contains(service)){
+				String message = "blocking method "+method.getName()+" for user "+info.getUserName()+": overquota reached";
+				log.warn(message);
+				throw new SecurityException(message);
+			}
+		}
+		return method.invoke(obj, args);
+	}
+
+	private static boolean isOneElementContainedinRoles(List<String> elements, String[] allowedRoles){
+		for (String role: allowedRoles )
+			if (elements.contains(role))
+				return true;
+		return false;
+	}
+
+}

src/main/java/org/gcube/common/authorization/library/AuthorizedTasks.java

@@ -0,0 +1,75 @@
+package org.gcube.common.authorization.library;
+
+import java.util.concurrent.Callable;
+
+import org.gcube.common.authorization.library.provider.AuthorizationProvider;
+import org.gcube.common.authorization.library.provider.UserInfo;
+import org.gcube.common.scope.api.ScopeProvider;
+
+
+public class AuthorizedTasks {
+
+	/**
+	 * Binds a {@link Callable} task to the current scope and user.
+	 * @param task the task
+	 * @return an equivalent {@link Callable} task bound to the current scope and user
+	 */
+	static public <V> Callable<V> bind(final Callable<V> task) {
+		
+		final String callScope = ScopeProvider.instance.get();
+		
+		final UserInfo userCall = AuthorizationProvider.instance.get();
+		
+		return new Callable<V>() {
+			@Override
+			public V call() throws Exception {
+				
+				//bind underlying thread to callscope
+				ScopeProvider.instance.set(callScope);
+				//bind underlying thread to call user
+				AuthorizationProvider.instance.set(userCall);
+				try {
+					return task.call();
+				}
+				finally {
+					ScopeProvider.instance.reset();
+					AuthorizationProvider.instance.reset();
+				}
+				
+			}
+		};
+	}
+	
+	/**
+	 * Binds a {@link Runnable} task to the current scope and user.
+	 * @param task the task
+	 * @return an equivalent {@link Runnable} task bound to the current scope and user
+	 */
+	static public <V> Runnable bind(final Runnable task) {
+		
+		final String callScope = ScopeProvider.instance.get();
+		
+		final UserInfo userCall = AuthorizationProvider.instance.get();
+		
+		return new Runnable() {
+			@Override
+			public void run() {
+				
+				//bind underlying thread to callscope
+				ScopeProvider.instance.set(callScope);
+				//bind underlying thread to call user
+				AuthorizationProvider.instance.set(userCall);
+				
+				try {
+					task.run();
+				}
+				finally {
+					ScopeProvider.instance.reset();
+					AuthorizationProvider.instance.reset();
+				}
+				
+			}
+		};
+	}
+	
+}

src/main/java/org/gcube/common/authorization/library/GenericProxyFactory.java

@@ -0,0 +1,16 @@
+package org.gcube.common.authorization.library;
+
+import java.lang.reflect.Proxy;
+
+public class GenericProxyFactory {
+
+	
+	@SuppressWarnings("unchecked")
+	public static  <T, I extends T>  T getProxy(Class<T> intf, 
+			final I obj, ResourceAuthorizationProxy<T, I> resourceAuthorizationProxy) {
+		return (T) 
+				Proxy.newProxyInstance(obj.getClass().getClassLoader(),
+					new Class[] { intf },
+					new AuthorizationInvocationHandler<T,I>(obj, intf.getSimpleName(), resourceAuthorizationProxy));
+	}
+}

src/main/java/org/gcube/common/authorization/library/ResourceAuthorizationProxy.java

@@ -0,0 +1,19 @@
+package org.gcube.common.authorization.library;
+
+public abstract class ResourceAuthorizationProxy<I,T extends I> {
+
+	private I delegate;
+
+	public ResourceAuthorizationProxy(Class<I> classIntrface, T wrapped){
+		delegate = GenericProxyFactory.getProxy(classIntrface,wrapped, this );
+	}
+
+	public I getDelegate() {
+		return delegate;
+	}
+
+	public abstract String getServiceClass();
+
+	public abstract String getServiceName();
+
+}

src/main/java/org/gcube/common/authorization/library/annotations/IsAllowedFor.java

@@ -0,0 +1,15 @@
+package org.gcube.common.authorization.library.annotations;
+
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Inherited;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+
+@Inherited
+@Retention(RetentionPolicy.RUNTIME)
+@Target(ElementType.METHOD)
+public @interface IsAllowedFor {
+	
+	String[] roles();
+}

src/main/java/org/gcube/common/authorization/library/annotations/SubjectToQuota.java

@@ -0,0 +1,14 @@
+package org.gcube.common.authorization.library.annotations;
+
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Inherited;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+
+@Inherited
+@Retention(RetentionPolicy.RUNTIME)
+@Target(ElementType.METHOD)
+public @interface SubjectToQuota {
+
+}

src/main/java/org/gcube/common/authorization/library/provider/AuthorizationProvider.java

@@ -1,12 +1,18 @@
 package org.gcube.common.authorization.library.provider;
 
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
 public class AuthorizationProvider {
 
 	public static AuthorizationProvider instance = new AuthorizationProvider();
 	
+	private static Logger logger = LoggerFactory.getLogger(AuthorizationProvider.class);
+	
 	// Thread local variable containing each thread's ID
-    private static final ThreadLocal<UserInfo> threadAuth =
-        new ThreadLocal<UserInfo>() {
+    private static final InheritableThreadLocal<UserInfo> threadAuth =
+        new InheritableThreadLocal<UserInfo>() {
     	    	
     	@Override protected UserInfo initialValue() {
                 return null;
@@ -17,11 +23,18 @@ public class AuthorizationProvider {
 	private AuthorizationProvider(){}
     
 	public UserInfo get(){
-		return threadAuth.get();
+		UserInfo info = threadAuth.get();
+		logger.info("getting "+info+" in thread "+Thread.currentThread().getId() );
+		return info;
 	}
 	
 	public void set(UserInfo authorizationToken){
 		threadAuth.set(authorizationToken);
+		logger.info("setting "+authorizationToken+" in thread "+Thread.currentThread().getId() );
+	}
+	
+	public void reset(){
+		threadAuth.remove();
 	}
 
 }

src/main/java/org/gcube/common/authorization/library/provider/Service.java

@@ -0,0 +1,61 @@
+package org.gcube.common.authorization.library.provider;
+
+import javax.xml.bind.annotation.XmlAccessType;
+import javax.xml.bind.annotation.XmlAccessorType;
+import javax.xml.bind.annotation.XmlRootElement;
+
+@XmlRootElement
+@XmlAccessorType(XmlAccessType.FIELD)
+public class Service {
+	
+	private String serviceClass;
+	private String serviceName;
+	
+	public Service(String serviceClass, String serviceName) {
+		super();
+		this.serviceClass = serviceClass;
+		this.serviceName = serviceName;
+	}
+	
+	public String getServiceClass() {
+		return serviceClass;
+	}
+	public String getServiceName() {
+		return serviceName;
+	}
+
+	@Override
+	public int hashCode() {
+		final int prime = 31;
+		int result = 1;
+		result = prime * result
+				+ ((serviceClass == null) ? 0 : serviceClass.hashCode());
+		result = prime * result
+				+ ((serviceName == null) ? 0 : serviceName.hashCode());
+		return result;
+	}
+
+	@Override
+	public boolean equals(Object obj) {
+		if (this == obj)
+			return true;
+		if (obj == null)
+			return false;
+		if (getClass() != obj.getClass())
+			return false;
+		Service other = (Service) obj;
+		if (serviceClass == null) {
+			if (other.serviceClass != null)
+				return false;
+		} else if (!serviceClass.equals(other.serviceClass))
+			return false;
+		if (serviceName == null) {
+			if (other.serviceName != null)
+				return false;
+		} else if (!serviceName.equals(other.serviceName))
+			return false;
+		return true;
+	}
+	
+	
+}

src/main/java/org/gcube/common/authorization/library/provider/UserInfo.java

@@ -1,5 +1,7 @@
 package org.gcube.common.authorization.library.provider;
 
+import java.util.List;
+
 import javax.xml.bind.annotation.XmlAccessType;
 import javax.xml.bind.annotation.XmlAccessorType;
 import javax.xml.bind.annotation.XmlRootElement;
@@ -10,30 +12,34 @@ import javax.xml.bind.annotation.XmlRootElement;
 public class UserInfo {
 
 	private String userName;
-	private String role;
+	private List<String> roles;
+	private List<Service> bannedServices;
 	
 	protected UserInfo(){}
 	
-	public UserInfo(String userName, String role) {
+	public UserInfo(String userName, List<String> roles, List<Service> bannedServices) {
 		super();
 		this.userName = userName;
-		this.role = role;
+		this.roles = roles;
+		this.bannedServices = bannedServices;
 	}
 	
 	public String getUserName() {
 		return userName;
 	}
-	public String getRole() {
-		return role;
+	public List<String> getRoles() {
+		return roles;
 	}
 	
-	
+	public List<Service> getBannedServices() {
+		return bannedServices;
+	}
 
 	@Override
 	public int hashCode() {
 		final int prime = 31;
 		int result = 1;
-		result = prime * result + ((role == null) ? 0 : role.hashCode());
+		result = prime * result + ((roles == null) ? 0 : roles.hashCode());
 		result = prime * result
 				+ ((userName == null) ? 0 : userName.hashCode());
 		return result;
@@ -48,10 +54,10 @@ public class UserInfo {
 		if (getClass() != obj.getClass())
 			return false;
 		UserInfo other = (UserInfo) obj;
-		if (role == null) {
-			if (other.role != null)
+		if (roles == null) {
+			if (other.roles != null)
 				return false;
-		} else if (!role.equals(other.role))
+		} else if (!roles.equals(other.roles))
 			return false;
 		if (userName == null) {
 			if (other.userName != null)
@@ -63,7 +69,7 @@ public class UserInfo {
 
 	@Override
 	public String toString() {
-		return "UserInfo [userName=" + userName + ", role=" + role + "]";
+		return "UserInfo [userName=" + userName + ", roles=" + roles + "]";
 	}