001 /****************************************************************
002 * Licensed to the Apache Software Foundation (ASF) under one *
003 * or more contributor license agreements. See the NOTICE file *
004 * distributed with this work for additional information *
005 * regarding copyright ownership. The ASF licenses this file *
006 * to you under the Apache License, Version 2.0 (the *
007 * "License"); you may not use this file except in compliance *
008 * with the License. You may obtain a copy of the License at *
009 * *
010 * http://www.apache.org/licenses/LICENSE-2.0 *
011 * *
012 * Unless required by applicable law or agreed to in writing, *
013 * software distributed under the License is distributed on an *
014 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY *
015 * KIND, either express or implied. See the License for the *
016 * specific language governing permissions and limitations *
017 * under the License. *
018 ****************************************************************/
019
020 package org.apache.james.mime4j.field;
021
022 import java.util.Collections;
023 import java.util.HashMap;
024 import java.util.Locale;
025 import java.util.Map;
026
027 import org.apache.james.mime4j.codec.DecodeMonitor;
028 import org.apache.james.mime4j.dom.FieldParser;
029 import org.apache.james.mime4j.dom.field.ContentTypeField;
030 import org.apache.james.mime4j.stream.Field;
031 import org.apache.james.mime4j.stream.NameValuePair;
032 import org.apache.james.mime4j.stream.RawBody;
033 import org.apache.james.mime4j.stream.RawField;
034 import org.apache.james.mime4j.stream.RawFieldParser;
035
036 /**
037 * Represents a <code>Content-Type</code> field.
038 */
039 public class ContentTypeFieldLenientImpl extends AbstractField implements ContentTypeField {
040
041 private boolean parsed = false;
042
043 private String mimeType = null;
044 private String mediaType = null;
045 private String subType = null;
046 private Map<String, String> parameters = new HashMap<String, String>();
047
048 ContentTypeFieldLenientImpl(final Field rawField, final DecodeMonitor monitor) {
049 super(rawField, monitor);
050 }
051
052 public String getMimeType() {
053 if (!parsed) {
054 parse();
055 }
056 return mimeType;
057 }
058
059 public String getMediaType() {
060 if (!parsed) {
061 parse();
062 }
063 return mediaType;
064 }
065
066 public String getSubType() {
067 if (!parsed) {
068 parse();
069 }
070 return subType;
071 }
072
073 public String getParameter(String name) {
074 if (!parsed) {
075 parse();
076 }
077 return parameters.get(name.toLowerCase());
078 }
079
080 public Map<String, String> getParameters() {
081 if (!parsed) {
082 parse();
083 }
084 return Collections.unmodifiableMap(parameters);
085 }
086
087 public boolean isMimeType(String mimeType) {
088 if (!parsed) {
089 parse();
090 }
091 return this.mimeType != null && this.mimeType.equalsIgnoreCase(mimeType);
092 }
093
094 public boolean isMultipart() {
095 if (!parsed) {
096 parse();
097 }
098 return this.mimeType != null && mimeType.startsWith(TYPE_MULTIPART_PREFIX);
099 }
100
101 public String getBoundary() {
102 return getParameter(PARAM_BOUNDARY);
103 }
104
105 public String getCharset() {
106 return getParameter(PARAM_CHARSET);
107 }
108
109 private void parse() {
110 parsed = true;
111 RawField f = getRawField();
112 RawBody body = RawFieldParser.DEFAULT.parseRawBody(f);
113 String main = body.getValue();
114 String type = null;
115 String subtype = null;
116 if (main != null) {
117 main = main.toLowerCase().trim();
118 int index = main.indexOf('/');
119 boolean valid = false;
120 if (index != -1) {
121 type = main.substring(0, index).trim();
122 subtype = main.substring(index + 1).trim();
123 if (type.length() > 0 && subtype.length() > 0) {
124 main = type + "/" + subtype;
125 valid = true;
126 }
127 }
128 if (!valid) {
129 if (monitor.isListening()) {
130 monitor.warn("Invalid Content-Type: " + body, "Content-Type value ignored");
131 }
132 main = null;
133 type = null;
134 subtype = null;
135 }
136 }
137 mimeType = main;
138 mediaType = type;
139 subType = subtype;
140 parameters.clear();
141 for (NameValuePair nmp: body.getParams()) {
142 String name = nmp.getName().toLowerCase(Locale.US);
143 parameters.put(name, nmp.getValue());
144 }
145 }
146
147 public static final FieldParser<ContentTypeField> PARSER = new FieldParser<ContentTypeField>() {
148
149 public ContentTypeField parse(final Field rawField, final DecodeMonitor monitor) {
150 return new ContentTypeFieldLenientImpl(rawField, monitor);
151 }
152
153 };
154
155 }