/*
* Licensed 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.jsmpp;
import java.io.DataInputStream;
import java.io.IOException;
import java.io.InputStream;
import org.jsmpp.bean.Command;
import org.jsmpp.util.OctetUtil;
/**
* Default implementation of {@link PDUReader}.
*
* @author uudashr
* @version 1.0
* @since 1.0
*
*/
public class DefaultPDUReader implements PDUReader {
/* (non-Javadoc)
* @see org.jsmpp.PDUReader#readPDUHeader(java.io.DataInputStream)
*/
public Command readPDUHeader(DataInputStream in)
throws InvalidCommandLengthException, IOException {
Command header = new Command();
header.setCommandLength(in.readInt());
if (header.getCommandLength() < 16) {
// command length to short, read the left dump anyway
byte[] dump = new byte[header.getCommandLength()];
in.read(dump, 4, header.getCommandLength() - 4);
throw new InvalidCommandLengthException("Command length "
+ header.getCommandLength() + " is to short");
}
header.setCommandId(in.readInt());
header.setCommandStatus(in.readInt());
header.setSequenceNumber(in.readInt());
return header;
}
/* (non-Javadoc)
* @see org.jsmpp.PDUReader#readPDU(java.io.InputStream, org.jsmpp.bean.Command)
*/
public byte[] readPDU(InputStream in, Command pduHeader) throws IOException {
return readPDU(in, pduHeader.getCommandLength(), pduHeader
.getCommandId(), pduHeader.getCommandStatus(), pduHeader
.getSequenceNumber());
}
/* (non-Javadoc)
* @see org.jsmpp.PDUReader#readPDU(java.io.InputStream, int, int, int, int)
*/
public byte[] readPDU(InputStream in, int commandLength, int commandId,
int commandStatus, int sequenceNumber) throws IOException {
byte[] b = new byte[commandLength];
System.arraycopy(OctetUtil.intToBytes(commandLength), 0, b, 0, 4);
System.arraycopy(OctetUtil.intToBytes(commandId), 0, b, 4, 4);
System.arraycopy(OctetUtil.intToBytes(commandStatus), 0, b, 8, 4);
System.arraycopy(OctetUtil.intToBytes(sequenceNumber), 0, b, 12, 4);
if (commandLength > 16) {
int len = commandLength - 16;
int totalReaded = -1;
synchronized (in) {
totalReaded = in.read(b, 16, commandLength - 16);
}
if (totalReaded != len) {
throw new IOException(
"Unexpected length of byte readed. Expecting " + len
+ " but only read " + totalReaded);
}
}
return b;
}
}