001/*
002 * oauth2-oidc-sdk
003 *
004 * Copyright 2012-2016, 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.oauth2.sdk.http;
019
020
021import java.io.BufferedReader;
022import java.io.IOException;
023import java.io.InputStream;
024import java.io.InputStreamReader;
025import java.net.HttpURLConnection;
026import java.net.URL;
027import javax.mail.internet.ContentType;
028import javax.mail.internet.ParseException;
029
030import net.jcip.annotations.ThreadSafe;
031import org.apache.commons.io.input.BoundedInputStream;
032
033
034/**
035 * The default retriever of resources specified by URL. Provides setting of
036 * HTTP connect and read timeouts as well as a size limit of the retrieved
037 * entity. Caching header directives are not honoured.
038 */
039@ThreadSafe
040@Deprecated
041public class DefaultResourceRetriever extends AbstractRestrictedResourceRetriever implements RestrictedResourceRetriever {
042
043
044        /**
045         * The system line separator.
046         */
047        private final String lineSeparator;
048        
049        
050        /**
051         * Creates a new resource retriever. The HTTP timeouts and entity size
052         * limit are set to zero (infinite).
053         */
054        public DefaultResourceRetriever() {
055        
056                this(0, 0);     
057        }
058        
059        
060        /**
061         * Creates a new resource retriever. The HTTP entity size limit is set
062         * to zero (infinite).
063         *
064         * @param connectTimeout The HTTP connects timeout, in milliseconds, 
065         *                       zero for infinite. Must not be negative.
066         * @param readTimeout    The HTTP read timeout, in milliseconds, zero 
067         *                       for infinite. Must not be negative.
068         */
069        public DefaultResourceRetriever(final int connectTimeout, final int readTimeout) {
070
071                this(connectTimeout, readTimeout, 0);
072        }
073
074
075        /**
076         * Creates a new resource retriever.
077         *
078         * @param connectTimeout The HTTP connects timeout, in milliseconds,
079         *                       zero for infinite. Must not be negative.
080         * @param readTimeout    The HTTP read timeout, in milliseconds, zero
081         *                       for infinite. Must not be negative.
082         * @param sizeLimit      The HTTP entity size limit, in bytes, zero for
083         *                       infinite. Must not be negative.
084         */
085        public DefaultResourceRetriever(final int connectTimeout, final int readTimeout, final int sizeLimit) {
086        
087                super(connectTimeout, readTimeout, sizeLimit);
088                lineSeparator = System.getProperty("line.separator");
089        }
090
091
092        @Override
093        public Resource retrieveResource(final URL url)
094                throws IOException {
095                
096                HttpURLConnection con;
097                try {
098                        con = (HttpURLConnection)url.openConnection();
099                } catch (ClassCastException e) {
100                        throw new IOException("Couldn't open HTTP(S) connection: " + e.getMessage(), e);
101                }
102
103                con.setConnectTimeout(getConnectTimeout());
104                con.setReadTimeout(getReadTimeout());
105
106                StringBuilder sb = new StringBuilder();
107
108                InputStream inputStream = con.getInputStream();
109
110                if (getSizeLimit() > 0) {
111                        inputStream = new BoundedInputStream(inputStream, getSizeLimit());
112                }
113
114                BufferedReader input = new BufferedReader(new InputStreamReader(inputStream));
115
116                String line;
117
118                while ((line = input.readLine()) != null) {
119
120                        sb.append(line);
121                        sb.append(lineSeparator);
122                }
123
124                input.close();
125
126                // Check HTTP code + message
127                final int statusCode = con.getResponseCode();
128                final String statusMessage = con.getResponseMessage();
129
130                // Ensure 2xx status code
131                if (statusCode > 299 || statusCode < 200) {
132                        throw new IOException("HTTP " + statusCode + ": " + statusMessage);
133                }
134
135                // Parse the Content-Type header
136                ContentType contentType = null;
137
138                if (con.getContentType() != null) {
139                        try {
140                                contentType = new ContentType(con.getContentType());
141                        } catch (ParseException e) {
142                                throw new IOException("Couldn't parse Content-Type header: " + e.getMessage(), e);
143                        }
144                }
145                
146                return new Resource(sb.toString(), contentType);
147        }
148}