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/*
 * oauth2-oidc-sdk
 *
 * Copyright 2012-2016, Connect2id Ltd and contributors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not use
 * this file except in compliance with the License. You may obtain a copy of the
 * License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software distributed
 * under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
 * CONDITIONS OF ANY KIND, either express or implied. See the License for the
 * specific language governing permissions and limitations under the License.
 */

package com.nimbusds.oauth2.sdk;


import java.util.*;

import net.jcip.annotations.Immutable;
import net.jcip.annotations.NotThreadSafe;

import com.nimbusds.oauth2.sdk.id.Identifier;


/**
 * Authorisation scope.
 *
 * 

Example scope from OpenID Connect indicating access to the user's email * and profile details: * *

 * Scope scope = new Scope();
 * scope.add(OIDCScopeValue.OPENID);
 * scope.add(OIDCScopeValue.EMAIL);
 * scope.add(OIDCScopeValue.PROFILE);
 * 
* *

Related specifications: * *

    *
  • OAuth 2.0 (RFC 6749), section 3.3. *
*/ @NotThreadSafe public class Scope extends LinkedHashSet { private static final long serialVersionUID = -553103514038936007L; /** * Authorisation scope value. */ @Immutable public static class Value extends Identifier { private static final long serialVersionUID = -1885648673808651565L; /** * Enumeration of the scope value requirements for * application-specific authorisation requests. */ public enum Requirement { /** * The value must be present in the {@link Scope} * parameter. */ REQUIRED, /** * The value may be optionally included in the * {@link Scope} parameter. */ OPTIONAL } /** * Optional requirement. */ private final Value.Requirement requirement; /** * Creates a new scope value. The requirement is not specified. * * @param value The scope value. Must not be {@code null} or * empty string. */ public Value(final String value) { this(value, null); } /** * Creates a new scope value with an optional requirement. * * @param value The scope value. Must not be {@code null} * or empty string. * @param requirement The requirement, {@code null} if not * specified. */ public Value(final String value, final Requirement requirement) { super(value); this.requirement = requirement; } /** * Gets the requirement of this scope value. * * @return The requirement, {@code null} if not specified. */ public Requirement getRequirement() { return requirement; } @Override public boolean equals(final Object object) { return object instanceof Value && this.toString().equals(object.toString()); } } /** * Creates a new empty authorisation scope. */ public Scope() { // Nothing to do } /** * Creates a new scope from the specified scope. * * @param scope The scope. May be {@code null}. */ public Scope(final Scope scope) { if (scope == null) { return; } addAll(scope); } /** * Creates a new authorisation scope with the specified string values. * * @param values The string values. */ public Scope(final String ... values) { for (String v: values) add(new Value(v)); } /** * Creates a new authorisation scope with the specified values. * * @param values The values. */ public Scope(final Value ... values) { addAll(Arrays.asList(values)); } /** * Adds the specified string value to this scope. * * @param value The string value. Must not be {@code null}. * * @return {@code true} if this scope did not already contain the * specified value. */ public boolean add(final String value) { return add(new Value(value)); } /** * Checks if this scope contains the specified string value. * * @param value The string value. Must not be {@code null}. * * @return {@code true} if the value is contained, else {@code false}. */ public boolean contains(final String value) { return contains(new Value(value)); } /** * Returns the string representation of this scope. The scope values * will be serialised in the order they were added. * * @return The string representation. */ @Override public String toString() { StringBuilder sb = new StringBuilder(); for (Scope.Value v : this) { if (sb.length() > 0) { sb.append(' '); } sb.append(v.toString()); } return sb.toString(); } /** * Returns the string list representation of this scope. The scope * values will be serialised in the order they were added. * * @return The string list representation. */ public List toStringList() { List list = new ArrayList<>(this.size()); for (Scope.Value v: this) list.add(v.getValue()); return list; } /** * Parses a scope from the specified string collection representation. * * @param collection The string collection, {@code null} if not * specified. * * @return The scope, {@code null} if not specified. */ public static Scope parse(final Collection collection) { if (collection == null) return null; Scope scope = new Scope(); for (String v: collection) scope.add(new Scope.Value(v)); return scope; } /** * Parses a scope from the specified string representation. * * @param s The scope string, {@code null} if not specified. * * @return The scope, {@code null} if not specified. */ public static Scope parse(final String s) { if (s == null) return null; Scope scope = new Scope(); if (s.trim().isEmpty()) return scope; // OAuth specifies space as delimiter, also support comma (old draft) StringTokenizer st = new StringTokenizer(s, " ,"); while(st.hasMoreTokens()) scope.add(new Scope.Value(st.nextToken())); return scope; } }




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