| | |
| | | * CDDL HEADER END |
| | | * |
| | | * |
| | | * Copyright 2006-2008 Sun Microsystems, Inc. |
| | | * Copyright 2006-2009 Sun Microsystems, Inc. |
| | | */ |
| | | package org.opends.server.protocols.asn1; |
| | | |
| | | |
| | | |
| | | import java.io.IOException; |
| | | import java.io.OutputStream; |
| | | import java.net.Socket; |
| | | import org.opends.server.types.ByteSequence; |
| | | |
| | | import static org.opends.server.loggers.debug.DebugLogger.*; |
| | | import org.opends.server.loggers.debug.DebugTracer; |
| | | import org.opends.server.types.DebugLogLevel; |
| | | import java.io.Closeable; |
| | | import java.io.IOException; |
| | | import java.io.Flushable; |
| | | |
| | | |
| | | /** |
| | | * This class defines a utility that can be used to write ASN.1 elements over a |
| | | * provided socket or output stream. |
| | | * An interface for encoding ASN.1 elements to a data source. |
| | | * <p> |
| | | * Methods for creating {@link ASN1Writer}s are provided in the |
| | | * {@link ASN1} class. |
| | | */ |
| | | @org.opends.server.types.PublicAPI( |
| | | stability=org.opends.server.types.StabilityLevel.UNCOMMITTED, |
| | | mayInstantiate=true, |
| | | mayExtend=false, |
| | | mayInvoke=true) |
| | | public final class ASN1Writer |
| | | public interface ASN1Writer extends Closeable, Flushable |
| | | { |
| | | |
| | | /** |
| | | * The tracer object for the debug logger. |
| | | * Closes this ASN.1 writer, flushing it first. Closing a |
| | | * previously closed ASN.1 writer has no effect. Any unfinished |
| | | * sequences and/or sets will be ended. |
| | | * |
| | | * @throws IOException |
| | | * If an error occurs while closing the writer. |
| | | */ |
| | | private static final DebugTracer TRACER = getTracer(); |
| | | public void close() throws IOException; |
| | | |
| | | |
| | | |
| | | |
| | | // The output stream to which the encoded elements should be written. |
| | | private OutputStream outputStream; |
| | | |
| | | // The socket with which the output stream is associated. |
| | | private Socket socket; |
| | | /** |
| | | * Flushes the writer. If the writer has saved any elements from the |
| | | * previous write methods in a buffer, write them immediately to their |
| | | * intended destination. Then, if that destination is another byte stream, |
| | | * flush it. Thus one flush() invocation will flush all the buffers in a |
| | | * chain of streams. |
| | | * <p/> |
| | | * If the intended destination of this stream is an abstraction provided |
| | | * by the underlying operating system, for example a file, then flushing |
| | | * the stream guarantees only that bytes previously written to the stream |
| | | * are passed to the operating system for writing; it does not guarantee |
| | | * that they are actually written to a physical device such as a disk drive. |
| | | * |
| | | * @throws IOException If an I/O error occurs |
| | | */ |
| | | public void flush() throws IOException; |
| | | |
| | | |
| | | |
| | | /** |
| | | * Creates a new ASN.1 writer that will write elements over the provided |
| | | * socket. |
| | | * Writes a boolean element using the Universal Boolean ASN.1 type |
| | | * tag. |
| | | * |
| | | * @param socket The socket to use to write ASN.1 elements. |
| | | * |
| | | * @throws IOException If a problem occurs while trying to get the output |
| | | * stream for the socket. |
| | | * @param booleanValue |
| | | * The boolean value to write. |
| | | * @return a reference to this object. |
| | | * @throws IOException |
| | | * If an error occurs while writing. |
| | | */ |
| | | public ASN1Writer(Socket socket) |
| | | throws IOException |
| | | { |
| | | this.socket = socket; |
| | | outputStream = socket.getOutputStream(); |
| | | } |
| | | ASN1Writer writeBoolean(boolean booleanValue) throws IOException; |
| | | |
| | | |
| | | |
| | | /** |
| | | * Creates a new ASN.1 writer that will write elements over the provided |
| | | * output stream. |
| | | * Writes a boolean element using the provided type tag. |
| | | * |
| | | * @param outputStream The output stream to use to write ASN.1 elements. |
| | | * @param type |
| | | * The type tag to use. |
| | | * @param booleanValue |
| | | * The boolean value to write. |
| | | * @return a reference to this object. |
| | | * @throws IOException |
| | | * If an error occurs while writing. |
| | | */ |
| | | public ASN1Writer(OutputStream outputStream) |
| | | { |
| | | this.outputStream = outputStream; |
| | | socket = null; |
| | | } |
| | | ASN1Writer writeBoolean(byte type, boolean booleanValue) throws IOException; |
| | | |
| | | |
| | | |
| | | /** |
| | | * Writes the provided ASN.1 element over the output stream associated with |
| | | * this ASN.1 writer. |
| | | * Finish writing a sequence. |
| | | * |
| | | * @param element The element to be written. |
| | | * |
| | | * @return The number of bytes actually written over the output stream. |
| | | * |
| | | * @throws IOException If a problem occurs while trying to write the |
| | | * information over the output stream. |
| | | * @return a reference to this object. |
| | | * @throws IOException |
| | | * If an error occurs while writing. |
| | | */ |
| | | public int writeElement(ASN1Element element) |
| | | throws IOException |
| | | { |
| | | byte[] elementBytes = element.encode(); |
| | | outputStream.write(elementBytes); |
| | | outputStream.flush(); |
| | | |
| | | return elementBytes.length; |
| | | } |
| | | ASN1Writer writeEndSequence() throws IOException; |
| | | |
| | | |
| | | |
| | | /** |
| | | * Closes this ASN.1 writer and the underlying output stream/socket. |
| | | * Finish writing a set. |
| | | * |
| | | * @return a reference to this object. |
| | | * @throws IOException |
| | | * If an error occurs while writing. |
| | | */ |
| | | public void close() |
| | | { |
| | | try |
| | | { |
| | | outputStream.close(); |
| | | } |
| | | catch (Exception e) |
| | | { |
| | | if (debugEnabled()) |
| | | { |
| | | TRACER.debugCaught(DebugLogLevel.ERROR, e); |
| | | } |
| | | } |
| | | ASN1Writer writeEndSet() throws IOException; |
| | | |
| | | |
| | | if (socket != null) |
| | | { |
| | | try |
| | | { |
| | | socket.close(); |
| | | } |
| | | catch (Exception e) |
| | | { |
| | | if (debugEnabled()) |
| | | { |
| | | TRACER.debugCaught(DebugLogLevel.ERROR, e); |
| | | } |
| | | } |
| | | } |
| | | } |
| | | |
| | | /** |
| | | * Writes an integer element using the provided type tag. |
| | | * |
| | | * @param type |
| | | * The type tag to use. |
| | | * @param intValue |
| | | * The integer value to write. |
| | | * @return a reference to this object. |
| | | * @throws IOException |
| | | * If an error occurs while writing. |
| | | */ |
| | | ASN1Writer writeInteger(byte type, int intValue) throws IOException; |
| | | |
| | | |
| | | |
| | | /** |
| | | * Writes an integer element using the provided type tag. |
| | | * |
| | | * @param type |
| | | * The type tag to use. |
| | | * @param longValue |
| | | * The integer value to write. |
| | | * @return a reference to this object. |
| | | * @throws IOException |
| | | * If an error occurs while writing. |
| | | */ |
| | | ASN1Writer writeInteger(byte type, long longValue) throws IOException; |
| | | |
| | | |
| | | |
| | | /** |
| | | * Writes an integer element using the Universal Integer ASN.1 type |
| | | * tag. |
| | | * |
| | | * @param intValue |
| | | * The integer value to write. |
| | | * @return a reference to this object. |
| | | * @throws IOException |
| | | * If an error occurs while writing. |
| | | */ |
| | | ASN1Writer writeInteger(int intValue) throws IOException; |
| | | |
| | | |
| | | |
| | | /** |
| | | * Writes an integer element using the Universal Integer ASN.1 type |
| | | * tag. |
| | | * |
| | | * @param longValue |
| | | * The integer value to write. |
| | | * @return a reference to this object. |
| | | * @throws IOException |
| | | * If an error occurs while writing. |
| | | */ |
| | | ASN1Writer writeInteger(long longValue) throws IOException; |
| | | |
| | | |
| | | |
| | | /** |
| | | * Writes an enumerated element using the Universal Enumerated ASN.1 type |
| | | * tag. |
| | | * |
| | | * @param intValue |
| | | * The integer value of the enumeration to write. |
| | | * @return a reference to this object. |
| | | * @throws IOException |
| | | * If an error occurs while writing. |
| | | */ |
| | | ASN1Writer writeEnumerated(int intValue) throws IOException; |
| | | |
| | | |
| | | /** |
| | | * Writes a null element using the Universal Null ASN.1 type tag. |
| | | * |
| | | * @return a reference to this object. |
| | | * @throws IOException |
| | | * If an error occurs while writing. |
| | | */ |
| | | ASN1Writer writeNull() throws IOException; |
| | | |
| | | |
| | | |
| | | /** |
| | | * Writes a null element using the provided type tag. |
| | | * |
| | | * @param type |
| | | * The type tag to use. |
| | | * @return a reference to this object. |
| | | * @throws IOException |
| | | * If an error occurs while writing. |
| | | */ |
| | | ASN1Writer writeNull(byte type) throws IOException; |
| | | |
| | | |
| | | |
| | | /** |
| | | * Writes an octet string element using the provided type tag and |
| | | * byte array. |
| | | * |
| | | * @param type |
| | | * The type tag to use. |
| | | * @param value |
| | | * The byte array containing the data to write. |
| | | * @param offset |
| | | * The offset in the byte array. |
| | | * @param length |
| | | * The number of bytes to write. |
| | | * @return a reference to this object. |
| | | * @throws IOException |
| | | * If an error occurs while writing. |
| | | */ |
| | | ASN1Writer writeOctetString(byte type, byte[] value, int offset, int length) |
| | | throws IOException; |
| | | |
| | | |
| | | |
| | | /** |
| | | * Writes an octet string element using the provided type tag and |
| | | * byte sequence. |
| | | * |
| | | * @param type |
| | | * The type tag to use. |
| | | * @param value |
| | | * The byte sequence containing the data to write. |
| | | * @return a reference to this object. |
| | | * @throws IOException |
| | | * If an error occurs while writing. |
| | | */ |
| | | ASN1Writer writeOctetString(byte type, ByteSequence value) throws IOException; |
| | | |
| | | |
| | | |
| | | /** |
| | | * Writes an octet string element using the provided type tag and |
| | | * the UTF-8 encoded bytes of the provided string. |
| | | * |
| | | * @param type |
| | | * The type tag to use. |
| | | * @param value |
| | | * The string to write. |
| | | * @return a reference to this object. |
| | | * @throws IOException |
| | | * If an error occurs while writing. |
| | | */ |
| | | ASN1Writer writeOctetString(byte type, String value) throws IOException; |
| | | |
| | | |
| | | |
| | | /** |
| | | * Writes an octet string element using the Universal Octet String |
| | | * ASN.1 type tag and the provided byte array. |
| | | * |
| | | * @param value |
| | | * The byte array containing the data to write. |
| | | * @param offset |
| | | * The offset in the byte array. |
| | | * @param length |
| | | * The number of bytes to write. |
| | | * @return a reference to this object. |
| | | * @throws IOException |
| | | * If an error occurs while writing. |
| | | */ |
| | | ASN1Writer writeOctetString(byte[] value, int offset, int length) |
| | | throws IOException; |
| | | |
| | | |
| | | |
| | | /** |
| | | * Writes an octet string element using the Universal Octet String |
| | | * ASN.1 type tag and the provided byte sequence. |
| | | * |
| | | * @param value |
| | | * The byte sequence containing the data to write. |
| | | * @return a reference to this object. |
| | | * @throws IOException |
| | | * If an error occurs while writing. |
| | | */ |
| | | ASN1Writer writeOctetString(ByteSequence value) throws IOException; |
| | | |
| | | |
| | | |
| | | /** |
| | | * Writes an octet string element using the Universal Octet String |
| | | * ASN.1 type tag and the UTF-8 encoded bytes of the provided |
| | | * string. |
| | | * |
| | | * @param value |
| | | * The string to write. |
| | | * @return a reference to this object. |
| | | * @throws IOException |
| | | * If an error occurs while writing. |
| | | */ |
| | | ASN1Writer writeOctetString(String value) throws IOException; |
| | | |
| | | |
| | | |
| | | /** |
| | | * Writes a sequence element using the Universal Sequence ASN.1 type |
| | | * tag. All further writes will be part of this set until |
| | | * {@link #writeEndSequence()} is called. |
| | | * |
| | | * @return a reference to this object. |
| | | * @throws IOException |
| | | * If an error occurs while writing. |
| | | */ |
| | | ASN1Writer writeStartSequence() throws IOException; |
| | | |
| | | |
| | | |
| | | /** |
| | | * Writes a sequence element using the provided type tag. All |
| | | * further writes will be part of this set until |
| | | * {@link #writeEndSequence()} is called. |
| | | * |
| | | * @param type |
| | | * The type tag to use. |
| | | * @return a reference to this object. |
| | | * @throws IOException |
| | | * If an error occurs while writing. |
| | | */ |
| | | ASN1Writer writeStartSequence(byte type) throws IOException; |
| | | |
| | | |
| | | |
| | | /** |
| | | * Writes a set element using the Universal Set type tag. All |
| | | * further writes will be part of this set until |
| | | * {@link #writeEndSet()} is called. |
| | | * |
| | | * @return a reference to this object. |
| | | * @throws IOException |
| | | * If an error occurs while writing. |
| | | */ |
| | | ASN1Writer writeStartSet() throws IOException; |
| | | } |
| | | |