001/*
002 * oauth2-oidc-sdk
003 *
004 * Copyright 2012-2021, Connect2id Ltd and contributors.
005 *
006 * Licensed under the Apache License, Version 2.0 (the "License"); you may not use
007 * this file except in compliance with the License. You may obtain a copy of the
008 * License at
009 *
010 *    http://www.apache.org/licenses/LICENSE-2.0
011 *
012 * Unless required by applicable law or agreed to in writing, software distributed
013 * under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
014 * CONDITIONS OF ANY KIND, either express or implied. See the License for the
015 * specific language governing permissions and limitations under the License.
016 */
017
018package com.nimbusds.openid.connect.sdk.assurance.evidences.attachment;
019
020
021import java.util.Objects;
022
023import net.jcip.annotations.Immutable;
024import net.minidev.json.JSONObject;
025
026import com.nimbusds.common.contenttype.ContentType;
027import com.nimbusds.jose.util.Base64;
028import com.nimbusds.oauth2.sdk.ParseException;
029import com.nimbusds.oauth2.sdk.util.JSONObjectUtils;
030
031
032/**
033 * Embedded attachment.
034 *
035 * <p>Related specifications:
036 *
037 * <ul>
038 *     <li>OpenID Connect for Identity Assurance 1.0, section 5.1.2.1.
039 * </ul>
040 */
041@Immutable
042public class EmbeddedAttachment extends Attachment {
043        
044        
045        /**
046         * The content.
047         */
048        private final Content content;
049        
050        
051        /**
052         * Creates a new embedded attachment.
053         *
054         * @param content The content. Must not be {@code null}.
055         */
056        public EmbeddedAttachment(final Content content) {
057                
058                super(AttachmentType.EMBEDDED, content.getDescription());
059                this.content = content;
060        }
061        
062        
063        /**
064         * Returns the content.
065         *
066         * @return The content.
067         */
068        public Content getContent() {
069                return content;
070        }
071        
072        
073        @Override
074        public JSONObject toJSONObject() {
075                JSONObject o = super.toJSONObject();
076                o.put("content_type", getContent().getType().toString());
077                o.put("content", getContent().getBase64().toString());
078                return o;
079        }
080        
081        
082        @Override
083        public boolean equals(Object o) {
084                if (this == o) return true;
085                if (!(o instanceof EmbeddedAttachment)) return false;
086                if (!super.equals(o)) return false;
087                EmbeddedAttachment that = (EmbeddedAttachment) o;
088                return getContent().equals(that.getContent());
089        }
090        
091        
092        @Override
093        public int hashCode() {
094                return Objects.hash(super.hashCode(), getContent());
095        }
096        
097        
098        /**
099         * Parses an embedded attachment from the specified JSON object.
100         *
101         * @param jsonObject The JSON object. Must not be {@code null}.
102         *
103         * @return The embedded attachment.
104         *
105         * @throws ParseException If parsing failed.
106         */
107        public static EmbeddedAttachment parse(final JSONObject jsonObject)
108                throws ParseException {
109                
110                ContentType type;
111                try {
112                        type = ContentType.parse(JSONObjectUtils.getString(jsonObject, "content_type"));
113                } catch (java.text.ParseException e) {
114                        throw new ParseException("Invalid content_type: " + e.getMessage(), e);
115                }
116                
117                Base64 base64 = Base64.from(JSONObjectUtils.getString(jsonObject, "content"));
118                
119                if (base64.toString().trim().isEmpty()) {
120                        throw new ParseException("Empty or blank content");
121                }
122                
123                String description = JSONObjectUtils.getString(jsonObject, "desc", null);
124                
125                return new EmbeddedAttachment(new Content(type, base64, description));
126        }
127}