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* Licensed to the Apache Software Foundation (ASF) under one *
* or more contributor license agreements. See the NOTICE file *
* distributed with this work for additional information *
* regarding copyright ownership. The ASF licenses this file *
* to you 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 org.apache.james.mime4j.field;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.Date;
import java.util.HashMap;
import java.util.List;
import java.util.Locale;
import java.util.Map;
import java.util.TimeZone;
import org.apache.james.mime4j.codec.DecodeMonitor;
import org.apache.james.mime4j.dom.FieldParser;
import org.apache.james.mime4j.dom.field.ContentDispositionField;
import org.apache.james.mime4j.stream.Field;
import org.apache.james.mime4j.stream.NameValuePair;
import org.apache.james.mime4j.stream.RawBody;
import org.apache.james.mime4j.stream.RawField;
import org.apache.james.mime4j.stream.RawFieldParser;
/**
* Represents a <code>Content-Disposition</code> field.
*/
public class ContentDispositionFieldLenientImpl extends AbstractField implements ContentDispositionField {
private static final String DEFAULT_DATE_FORMAT = "EEE, dd MMM yyyy hh:mm:ss ZZZZ";
private final List<String> datePatterns;
private boolean parsed = false;
private String dispositionType = "";
private Map<String, String> parameters = new HashMap<String, String>();
private boolean creationDateParsed;
private Date creationDate;
private boolean modificationDateParsed;
private Date modificationDate;
private boolean readDateParsed;
private Date readDate;
ContentDispositionFieldLenientImpl(final Field rawField,
final Collection<String> dateParsers, final DecodeMonitor monitor) {
super(rawField, monitor);
this.datePatterns = new ArrayList<String>();
if (dateParsers != null) {
this.datePatterns.addAll(dateParsers);
} else {
this.datePatterns.add(DEFAULT_DATE_FORMAT);
}
}
public String getDispositionType() {
if (!parsed) {
parse();
}
return dispositionType;
}
public String getParameter(String name) {
if (!parsed) {
parse();
}
return parameters.get(name.toLowerCase());
}
public Map<String, String> getParameters() {
if (!parsed) {
parse();
}
return Collections.unmodifiableMap(parameters);
}
public boolean isDispositionType(String dispositionType) {
if (!parsed) {
parse();
}
return this.dispositionType.equalsIgnoreCase(dispositionType);
}
public boolean isInline() {
if (!parsed) {
parse();
}
return dispositionType.equals(DISPOSITION_TYPE_INLINE);
}
public boolean isAttachment() {
if (!parsed) {
parse();
}
return dispositionType.equals(DISPOSITION_TYPE_ATTACHMENT);
}
public String getFilename() {
return getParameter(PARAM_FILENAME);
}
public Date getCreationDate() {
if (!creationDateParsed) {
creationDate = parseDate(PARAM_CREATION_DATE);
creationDateParsed = true;
}
return creationDate;
}
public Date getModificationDate() {
if (!modificationDateParsed) {
modificationDate = parseDate(PARAM_MODIFICATION_DATE);
modificationDateParsed = true;
}
return modificationDate;
}
public Date getReadDate() {
if (!readDateParsed) {
readDate = parseDate(PARAM_READ_DATE);
readDateParsed = true;
}
return readDate;
}
public long getSize() {
String value = getParameter(PARAM_SIZE);
if (value == null)
return -1;
try {
long size = Long.parseLong(value);
return size < 0 ? -1 : size;
} catch (NumberFormatException e) {
return -1;
}
}
private void parse() {
parsed = true;
RawField f = getRawField();
RawBody body = RawFieldParser.DEFAULT.parseRawBody(f);
String main = body.getValue();
if (main != null) {
dispositionType = main.toLowerCase(Locale.US);
} else {
dispositionType = null;
}
parameters.clear();
for (NameValuePair nmp: body.getParams()) {
String name = nmp.getName().toLowerCase(Locale.US);
parameters.put(name, nmp.getValue());
}
}
private Date parseDate(final String paramName) {
String value = getParameter(paramName);
if (value == null) {
return null;
}
for (String datePattern: datePatterns) {
try {
SimpleDateFormat parser = new SimpleDateFormat(datePattern, Locale.US);
parser.setTimeZone(TimeZone.getTimeZone("GMT"));
parser.setLenient(true);
return parser.parse(value);
} catch (ParseException ignore) {
}
}
if (monitor.isListening()) {
monitor.warn(paramName + " parameter is invalid: " + value,
paramName + " parameter is ignored");
}
return null;
}
public static final FieldParser<ContentDispositionField> PARSER = new FieldParser<ContentDispositionField>() {
public ContentDispositionField parse(final Field rawField, final DecodeMonitor monitor) {
return new ContentDispositionFieldLenientImpl(rawField, null, monitor);
}
};
}