1/* 2 * Copyright 2008 Netflix, Inc. 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package net.oauth.http; 18 19import java.io.IOException; 20import java.io.InputStream; 21import java.net.URL; 22import java.util.ArrayList; 23import java.util.Iterator; 24import java.util.List; 25import java.util.Map; 26import java.util.regex.Matcher; 27import java.util.regex.Pattern; 28import net.oauth.client.ExcerptInputStream; 29 30/** 31 * An HTTP request or response. 32 * 33 * @author John Kristian 34 * @hide 35 */ 36public class HttpMessage 37{ 38 39 public HttpMessage() 40 { 41 this(null, null); 42 } 43 44 public HttpMessage(String method, URL url) 45 { 46 this(method, url, null); 47 } 48 49 public HttpMessage(String method, URL url, InputStream body) 50 { 51 this.method = method; 52 this.url = url; 53 this.body = body; 54 } 55 56 public String method; 57 public URL url; 58 public final List<Map.Entry<String, String>> headers = new ArrayList<Map.Entry<String, String>>(); 59 protected InputStream body = null; 60 61 /** 62 * Get the value of the last header of the given name. The name is 63 * case-insensitive. 64 */ 65 public final String getHeader(String name) 66 { 67 String value = null; 68 for (Map.Entry<String, String> header : headers) { 69 if (equalsIgnoreCase(name, header.getKey())) { 70 value = header.getValue(); 71 } 72 } 73 return value; 74 } 75 76 /** 77 * Remove all headers of the given name. The name is case insensitive. 78 * 79 * @return the value of the last header with that name, or null to indicate 80 * there was no such header 81 */ 82 public String removeHeaders(String name) 83 { 84 String value = null; 85 for (Iterator<Map.Entry<String, String>> i = headers.iterator(); i.hasNext();) { 86 Map.Entry<String, String> header = i.next(); 87 if (equalsIgnoreCase(name, header.getKey())) { 88 value = header.getValue(); 89 i.remove(); 90 } 91 } 92 return value; 93 } 94 95 public final String getContentCharset() 96 { 97 return getCharset(getHeader(CONTENT_TYPE)); 98 } 99 100 public final InputStream getBody() throws IOException 101 { 102 if (body == null) { 103 InputStream raw = openBody(); 104 if (raw != null) { 105 body = new ExcerptInputStream(raw); 106 } 107 } 108 return body; 109 } 110 111 protected InputStream openBody() throws IOException 112 { 113 return null; 114 } 115 116 /** Put a description of this message and its origins into the given Map. */ 117 public void dump(Map<String, Object> into) throws IOException 118 { 119 } 120 121 private static boolean equalsIgnoreCase(String x, String y) 122 { 123 if (x == null) 124 return y == null; 125 else 126 return x.equalsIgnoreCase(y); 127 } 128 129 private static final String getCharset(String mimeType) 130 { 131 if (mimeType != null) { 132 Matcher m = CHARSET.matcher(mimeType); 133 if (m.find()) { 134 String charset = m.group(1); 135 if (charset.length() >= 2 && charset.charAt(0) == '"' 136 && charset.charAt(charset.length() - 1) == '"') { 137 charset = charset.substring(1, charset.length() - 1); 138 charset = charset.replace("\\\"", "\""); 139 } 140 return charset; 141 } 142 } 143 return DEFAULT_CHARSET; 144 } 145 146 /** The name of a dump entry whose value is the HTTP request. */ 147 public static final String REQUEST = "HTTP request"; 148 149 /** The name of a dump entry whose value is the HTTP response. */ 150 public static final String RESPONSE = "HTTP response"; 151 152 public static final String ACCEPT_ENCODING = "Accept-Encoding"; 153 public static final String CONTENT_ENCODING = "Content-Encoding"; 154 public static final String CONTENT_LENGTH = "Content-Length"; 155 public static final String CONTENT_TYPE = "Content-Type"; 156 public static final String DEFAULT_CHARSET = "ISO-8859-1"; 157 158 private static final Pattern CHARSET = Pattern 159 .compile("; *charset *= *([^;\"]*|\"([^\"]|\\\\\")*\")(;|$)"); 160 161} 162