| /* ==================================================================== |
| 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.poi.hmef.attribute; |
| |
| import java.io.IOException; |
| import java.io.InputStream; |
| |
| import org.apache.poi.hmef.Attachment; |
| import org.apache.poi.hmef.HMEFMessage; |
| import org.apache.poi.util.IOUtils; |
| import org.apache.poi.util.LittleEndian; |
| |
| |
| /** |
| * An attribute which applies to a {@link HMEFMessage} |
| * or one of its {@link Attachment}s. |
| * Note - the types and IDs differ from standard Outlook/MAPI |
| * ones, so we can't just re-use the HSMF ones. |
| */ |
| public class TNEFAttribute { |
| |
| //arbitrarily selected; may need to increase |
| private static final int MAX_RECORD_LENGTH = 20_000_000; |
| |
| private final TNEFProperty property; |
| private final int type; |
| private final byte[] data; |
| private final int checksum; |
| |
| /** |
| * Constructs a single new attribute from the id, type, |
| * and the contents of the stream |
| */ |
| protected TNEFAttribute(int id, int type, InputStream inp) throws IOException { |
| this.type = type; |
| int length = LittleEndian.readInt(inp); |
| |
| property = TNEFProperty.getBest(id, type); |
| data = IOUtils.safelyAllocate(length, MAX_RECORD_LENGTH); |
| IOUtils.readFully(inp, data); |
| |
| checksum = LittleEndian.readUShort(inp); |
| } |
| |
| /** |
| * Creates a new TNEF Attribute by reading data from |
| * the stream within a {@link HMEFMessage} |
| */ |
| public static TNEFAttribute create(InputStream inp) throws IOException { |
| int id = LittleEndian.readUShort(inp); |
| int type = LittleEndian.readUShort(inp); |
| |
| // Create as appropriate |
| if(id == TNEFProperty.ID_MAPIPROPERTIES.id || |
| id == TNEFProperty.ID_ATTACHMENT.id) { |
| return new TNEFMAPIAttribute(id, type, inp); |
| } |
| if(type == TNEFProperty.TYPE_STRING || |
| type == TNEFProperty.TYPE_TEXT) { |
| return new TNEFStringAttribute(id, type, inp); |
| } |
| if(type == TNEFProperty.TYPE_DATE) { |
| return new TNEFDateAttribute(id, type, inp); |
| } |
| return new TNEFAttribute(id, type, inp); |
| } |
| |
| public TNEFProperty getProperty() { |
| return property; |
| } |
| |
| public int getType() { |
| return type; |
| } |
| |
| public byte[] getData() { |
| return data; |
| } |
| |
| public String toString() { |
| return "Attribute " + property + ", type=" + type + |
| ", data length=" + data.length; |
| } |
| } |