/*
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* CDDL HEADER START
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*
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* The contents of this file are subject to the terms of the
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* Common Development and Distribution License, Version 1.0 only
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* (the "License"). You may not use this file except in compliance
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* with the License.
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*
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* You can obtain a copy of the license at legal-notices/CDDLv1_0.txt
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* or http://forgerock.org/license/CDDLv1.0.html.
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* See the License for the specific language governing permissions
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* and limitations under the License.
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*
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* When distributing Covered Code, include this CDDL HEADER in each
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* file and include the License file at legal-notices/CDDLv1_0.txt.
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* If applicable, add the following below this CDDL HEADER, with the
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* fields enclosed by brackets "[]" replaced with your own identifying
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* information:
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* Portions Copyright [yyyy] [name of copyright owner]
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*
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* CDDL HEADER END
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*
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*
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* Copyright 2006-2009 Sun Microsystems, Inc.
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* Portions Copyright 2013-2015 ForgeRock AS.
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*/
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package org.opends.server.util;
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import java.io.BufferedWriter;
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import java.io.Closeable;
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import java.io.IOException;
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import java.util.Collection;
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import java.util.Iterator;
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import java.util.List;
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import java.util.regex.Pattern;
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import org.forgerock.i18n.LocalizableMessage;
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import org.forgerock.opendj.ldap.ByteSequence;
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import org.forgerock.opendj.ldap.ByteString;
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import org.opends.server.tools.makeldif.TemplateEntry;
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import org.opends.server.types.*;
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import static org.forgerock.util.Reject.*;
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import static org.opends.server.util.StaticUtils.*;
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/**
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* This class provides a mechanism for writing entries in LDIF form to a file or
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* an output stream.
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*/
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@org.opends.server.types.PublicAPI(
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stability=org.opends.server.types.StabilityLevel.UNCOMMITTED,
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mayInstantiate=true,
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mayExtend=false,
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mayInvoke=true)
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public final class LDIFWriter implements Closeable
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{
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// FIXME -- Add support for generating a hash when writing the data.
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// FIXME -- Add support for signing the hash that is generated.
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/** The writer to which the LDIF information will be written. */
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private BufferedWriter writer;
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/** The configuration to use for the export. */
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private LDIFExportConfig exportConfig;
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/** Regular expression used for splitting comments on line-breaks. */
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private static final Pattern SPLIT_NEWLINE = Pattern.compile("\\r?\\n");
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/**
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* Creates a new LDIF writer with the provided configuration.
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*
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* @param exportConfig The configuration to use for the export. It must not
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* be <CODE>null</CODE>.
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*
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* @throws IOException If a problem occurs while opening the writer.
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*/
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public LDIFWriter(LDIFExportConfig exportConfig)
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throws IOException
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{
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ifNull(exportConfig);
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this.exportConfig = exportConfig;
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writer = exportConfig.getWriter();
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}
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/**
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* Writes the provided comment to the LDIF file, optionally wrapping near the
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* specified column. Each line will be prefixed by the octothorpe (#)
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* character followed by a space. If the comment should be wrapped at a
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* specified column, then it will attempt to do so at the first whitespace
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* character at or before that column (so it will try not wrap in the middle
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* of a word).
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* <BR><BR>
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* This comment will be ignored by the
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* Directory Server's LDIF reader, as well as any other compliant LDIF parsing
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* software.
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*
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* @param comment The comment to be written. Any line breaks that it
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* contains will be honored, and potentially new line
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* breaks may be introduced by the wrapping process. It
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* must not be <CODE>null</CODE>.
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* @param wrapColumn The column at which long lines should be wrapped, or
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* -1 to indicate that no additional wrapping should be
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* added. This will override the wrap column setting
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* specified in the LDIF export configuration.
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*
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* @throws IOException If a problem occurs while attempting to write the
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* comment to the LDIF file.
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*/
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public void writeComment(LocalizableMessage comment, int wrapColumn)
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throws IOException
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{
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ifNull(comment);
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// First, break up the comment into multiple lines to preserve the original
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// spacing that it contained.
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String[] lines = SPLIT_NEWLINE.split(comment);
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// Now iterate through the lines and write them out, prefixing and wrapping
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// them as necessary.
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for (String l : lines)
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{
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if (wrapColumn <= 0)
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{
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writer.write("# ");
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writer.write(l);
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writer.newLine();
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}
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else
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{
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int breakColumn = wrapColumn - 2;
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if (l.length() <= breakColumn)
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{
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writer.write("# ");
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writer.write(l);
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writer.newLine();
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}
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else
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{
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int startPos = 0;
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outerLoop:
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while (startPos < l.length())
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{
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if (startPos + breakColumn >= l.length())
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{
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writer.write("# ");
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writer.write(l.substring(startPos));
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writer.newLine();
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startPos = l.length();
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}
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else
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{
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int endPos = startPos + breakColumn;
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int i=endPos - 1;
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while (i > startPos)
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{
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if (l.charAt(i) == ' ')
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{
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writer.write("# ");
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writer.write(l.substring(startPos, i));
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writer.newLine();
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startPos = i+1;
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continue outerLoop;
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}
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i--;
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}
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// If we've gotten here, then there are no spaces on the entire
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// line. If that happens, then we'll have to break in the middle
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// of a word.
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writer.write("# ");
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writer.write(l.substring(startPos, endPos));
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writer.newLine();
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startPos = endPos;
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}
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}
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}
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}
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}
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}
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/**
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* Iterates over each entry contained in the map and writes out the entry in
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* LDIF format. The main benefit of this method is that the entries can be
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* sorted by DN and output in sorted order.
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*
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* @param entries The Map containing the entries keyed by DN.
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*
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* @return <CODE>true</CODE>of all of the entries were
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* written out, <CODE>false</CODE>if it was not
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* because of the export configuration.
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*
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* @throws IOException If a problem occurs while writing the entry to LDIF.
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*
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* @throws LDIFException If a problem occurs while trying to determine
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* whether to include the entry in the export.
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*/
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public boolean writeEntries(Collection<Entry> entries) throws IOException,
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LDIFException
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{
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for (Entry entry : entries)
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{
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if (!writeEntry(entry))
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{
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return false;
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}
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}
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return true;
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}
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/**
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* Writes the provided entry to LDIF.
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*
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* @param entry The entry to be written. It must not be <CODE>null</CODE>.
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*
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* @return <CODE>true</CODE> if the entry was actually written, or
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* <CODE>false</CODE> if it was not because of the export
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* configuration.
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*
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* @throws IOException If a problem occurs while writing the entry to LDIF.
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*
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* @throws LDIFException If a problem occurs while trying to determine
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* whether to include the entry in the export.
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*/
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public boolean writeEntry(Entry entry)
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throws IOException, LDIFException
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{
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ifNull(entry);
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return entry.toLDIF(exportConfig);
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}
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/**
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* Writes the provided template entry to LDIF.
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*
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* @param templateEntry The template entry to be written. It must not be
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* <CODE>null</CODE>.
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*
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* @return <CODE>true</CODE> if the entry was actually written, or
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* <CODE>false</CODE> if it was not because of the export
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* configuration.
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*
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* @throws IOException If a problem occurs while writing the template entry
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* to LDIF.
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*
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* @throws LDIFException If a problem occurs while trying to determine
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* whether to include the template entry in the
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* export.
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*/
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public boolean writeTemplateEntry(TemplateEntry templateEntry)
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throws IOException, LDIFException
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{
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ifNull(templateEntry);
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return templateEntry.toLDIF(exportConfig);
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}
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/**
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* Writes a change record entry for the provided change record.
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*
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* @param changeRecord The change record entry to be written.
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*
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* @throws IOException If a problem occurs while writing the change record.
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*/
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public void writeChangeRecord(ChangeRecordEntry changeRecord)
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throws IOException
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{
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ifNull(changeRecord);
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// Get the information necessary to write the LDIF.
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BufferedWriter writer = exportConfig.getWriter();
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int wrapColumn = exportConfig.getWrapColumn();
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boolean wrapLines = wrapColumn > 1;
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// First, write the DN.
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writeDN("dn", changeRecord.getDN(), writer, wrapLines, wrapColumn);
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// Figure out what type of change it is and act accordingly.
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if (changeRecord instanceof AddChangeRecordEntry)
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{
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StringBuilder changeTypeLine = new StringBuilder("changetype: add");
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writeLDIFLine(changeTypeLine, writer, wrapLines, wrapColumn);
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AddChangeRecordEntry addRecord = (AddChangeRecordEntry) changeRecord;
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for (Attribute a : addRecord.getAttributes())
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{
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for (ByteString v : a)
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{
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final String attrName = a.getNameWithOptions();
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writeAttribute(attrName, v, writer, wrapLines, wrapColumn);
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}
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}
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}
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else if (changeRecord instanceof DeleteChangeRecordEntry)
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{
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StringBuilder changeTypeLine = new StringBuilder("changetype: delete");
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writeLDIFLine(changeTypeLine, writer, wrapLines, wrapColumn);
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}
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else if (changeRecord instanceof ModifyChangeRecordEntry)
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{
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StringBuilder changeTypeLine = new StringBuilder("changetype: modify");
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writeLDIFLine(changeTypeLine, writer, wrapLines, wrapColumn);
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ModifyChangeRecordEntry modifyRecord =
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(ModifyChangeRecordEntry) changeRecord;
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List<RawModification> mods = modifyRecord.getModifications();
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Iterator<RawModification> iterator = mods.iterator();
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while (iterator.hasNext())
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{
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RawModification m = iterator.next();
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RawAttribute a = m.getAttribute();
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String attrName = a.getAttributeType();
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StringBuilder modTypeLine = new StringBuilder();
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modTypeLine.append(m.getModificationType());
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modTypeLine.append(": ");
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modTypeLine.append(attrName);
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writeLDIFLine(modTypeLine, writer, wrapLines, wrapColumn);
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for (ByteString s : a.getValues())
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{
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StringBuilder valueLine = new StringBuilder(attrName);
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String stringValue = s.toString();
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if (needsBase64Encoding(stringValue))
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{
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valueLine.append(":: ");
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valueLine.append(Base64.encode(s));
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}
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else
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{
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valueLine.append(": ");
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valueLine.append(stringValue);
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}
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writeLDIFLine(valueLine, writer, wrapLines, wrapColumn);
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}
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if (iterator.hasNext())
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{
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StringBuilder dashLine = new StringBuilder("-");
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writeLDIFLine(dashLine, writer, wrapLines, wrapColumn);
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}
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}
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}
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else if (changeRecord instanceof ModifyDNChangeRecordEntry)
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{
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StringBuilder changeTypeLine = new StringBuilder("changetype: moddn");
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writeLDIFLine(changeTypeLine, writer, wrapLines, wrapColumn);
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ModifyDNChangeRecordEntry modifyDNRecord =
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(ModifyDNChangeRecordEntry) changeRecord;
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StringBuilder newRDNLine = new StringBuilder("newrdn: ");
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modifyDNRecord.getNewRDN().toString(newRDNLine);
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writeLDIFLine(newRDNLine, writer, wrapLines, wrapColumn);
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StringBuilder deleteOldRDNLine = new StringBuilder("deleteoldrdn: ");
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deleteOldRDNLine.append(modifyDNRecord.deleteOldRDN() ? "1" : "0");
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writeLDIFLine(deleteOldRDNLine, writer, wrapLines, wrapColumn);
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DN newSuperiorDN = modifyDNRecord.getNewSuperiorDN();
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if (newSuperiorDN != null)
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{
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StringBuilder newSuperiorLine = new StringBuilder("newsuperior: ");
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newSuperiorDN.toString(newSuperiorLine);
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writeLDIFLine(newSuperiorLine, writer, wrapLines, wrapColumn);
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}
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}
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// Make sure there is a blank line after the entry.
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writer.newLine();
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}
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/**
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* Writes an add change record for the provided entry. No filtering will be
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* performed for this entry, nor will any export plugins be invoked. Further,
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* only the user attributes will be included.
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*
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* @param entry The entry to include in the add change record. It must not
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* be <CODE>null</CODE>.
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*
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* @throws IOException If a problem occurs while writing the add record.
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*/
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public void writeAddChangeRecord(Entry entry)
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throws IOException
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{
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ifNull(entry);
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// Get the information necessary to write the LDIF.
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BufferedWriter writer = exportConfig.getWriter();
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int wrapColumn = exportConfig.getWrapColumn();
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boolean wrapLines = wrapColumn > 1;
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// First, write the DN.
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writeDN("dn", entry.getName(), writer, wrapLines, wrapColumn);
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// Next, the changetype.
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StringBuilder changeTypeLine = new StringBuilder("changetype: add");
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writeLDIFLine(changeTypeLine, writer, wrapLines, wrapColumn);
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// Now the objectclasses.
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for (String s : entry.getObjectClasses().values())
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{
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StringBuilder ocLine = new StringBuilder();
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ocLine.append("objectClass: ");
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ocLine.append(s);
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writeLDIFLine(ocLine, writer, wrapLines, wrapColumn);
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}
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// Finally, the set of user attributes.
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for (AttributeType attrType : entry.getUserAttributes().keySet())
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{
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for (Attribute a : entry.getUserAttribute(attrType))
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{
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StringBuilder attrName = new StringBuilder(a.getName());
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for (String o : a.getOptions())
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{
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attrName.append(";");
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attrName.append(o);
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}
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for (ByteString v : a)
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{
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writeAttribute(attrName, v, writer, wrapLines, wrapColumn);
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}
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}
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}
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// Make sure there is a blank line after the entry.
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writer.newLine();
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}
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/**
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* Writes a delete change record for the provided entry, optionally including
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* a comment with the full entry contents. No filtering will be performed for
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* this entry, nor will any export plugins be invoked. Further, only the user
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* attributes will be included.
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*
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* @param entry The entry to include in the delete change record. It
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* must not be <CODE>null</CODE>.
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* @param commentEntry Indicates whether to include a comment with the
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* contents of the entry.
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*
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* @throws IOException If a problem occurs while writing the delete record.
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*/
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public void writeDeleteChangeRecord(Entry entry, boolean commentEntry)
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throws IOException
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{
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ifNull(entry);
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// Get the information necessary to write the LDIF.
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BufferedWriter writer = exportConfig.getWriter();
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int wrapColumn = exportConfig.getWrapColumn();
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boolean wrapLines = wrapColumn > 1;
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// Add the DN and changetype lines.
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writeDN("dn", entry.getName(), writer, wrapLines, wrapColumn);
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StringBuilder changeTypeLine = new StringBuilder("changetype: delete");
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writeLDIFLine(changeTypeLine, writer, wrapLines, wrapColumn);
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// If we should include a comment with the rest of the entry contents, then
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// do so now.
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if (commentEntry)
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{
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// Write the objectclasses.
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for (String s : entry.getObjectClasses().values())
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{
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StringBuilder ocLine = new StringBuilder();
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ocLine.append("# objectClass: ");
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ocLine.append(s);
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writeLDIFLine(ocLine, writer, wrapLines, wrapColumn);
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}
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// Write the set of user attributes.
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for (AttributeType attrType : entry.getUserAttributes().keySet())
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{
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for (Attribute a : entry.getUserAttribute(attrType))
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{
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StringBuilder attrName = new StringBuilder();
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attrName.append("# ");
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attrName.append(a.getName());
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for (String o : a.getOptions())
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{
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attrName.append(";");
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attrName.append(o);
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}
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for (ByteString v : a)
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{
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writeAttribute(attrName, v, writer, wrapLines, wrapColumn);
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}
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}
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}
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}
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// Make sure there is a blank line after the entry.
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writer.newLine();
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}
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/**
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* Writes a modify change record with the provided information. No filtering
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* will be performed, nor will any export plugins be invoked.
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*
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* @param dn The DN of the entry being modified. It must not be
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* <CODE>null</CODE>.
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* @param modifications The set of modifications to include in the change
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* record. It must not be <CODE>null</CODE>.
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*
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* @throws IOException If a problem occurs while writing the modify record.
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*/
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public void writeModifyChangeRecord(DN dn, List<Modification> modifications)
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throws IOException
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{
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ifNull(dn, modifications);
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// If there aren't any modifications, then there's nothing to do.
|
if (modifications.isEmpty())
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{
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return;
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}
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|
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// Get the information necessary to write the LDIF.
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BufferedWriter writer = exportConfig.getWriter();
|
int wrapColumn = exportConfig.getWrapColumn();
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boolean wrapLines = wrapColumn > 1;
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// Write the DN and changetype.
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writeDN("dn", dn, writer, wrapLines, wrapColumn);
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StringBuilder changeTypeLine = new StringBuilder("changetype: modify");
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writeLDIFLine(changeTypeLine, writer, wrapLines, wrapColumn);
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|
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// Iterate through the modifications and write them to the LDIF.
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Iterator<Modification> iterator = modifications.iterator();
|
while (iterator.hasNext())
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{
|
Modification m = iterator.next();
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Attribute a = m.getAttribute();
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StringBuilder nameBuffer = new StringBuilder(a.getName());
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for (String o : a.getOptions())
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{
|
nameBuffer.append(";");
|
nameBuffer.append(o);
|
}
|
String name = nameBuffer.toString();
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StringBuilder modTypeLine = new StringBuilder();
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modTypeLine.append(m.getModificationType());
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modTypeLine.append(": ");
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modTypeLine.append(name);
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writeLDIFLine(modTypeLine, writer, wrapLines, wrapColumn);
|
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for (ByteString v : a)
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{
|
writeAttribute(name, v, writer, wrapLines, wrapColumn);
|
}
|
|
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// If this is the last modification, then append blank line. Otherwise
|
// write a line with just a dash.
|
if (iterator.hasNext())
|
{
|
writer.write("-");
|
}
|
writer.newLine();
|
}
|
}
|
|
|
|
/**
|
* Writes a modify DN change record with the provided information. No
|
* filtering will be performed, nor will any export plugins be invoked.
|
*
|
* @param dn The DN of the entry before the rename. It must not
|
* be <CODE>null</CODE>.
|
* @param newRDN The new RDN for the entry. It must not be
|
* <CODE>null</CODE>.
|
* @param deleteOldRDN Indicates whether the old RDN value should be removed
|
* from the entry.
|
* @param newSuperior The new superior DN for the entry, or
|
* <CODE>null</CODE> if the entry will stay below the
|
* same parent.
|
*
|
* @throws IOException If a problem occurs while writing the modify record.
|
*/
|
public void writeModifyDNChangeRecord(DN dn, RDN newRDN, boolean deleteOldRDN,
|
DN newSuperior)
|
throws IOException
|
{
|
ifNull(dn, newRDN);
|
|
|
// Get the information necessary to write the LDIF.
|
BufferedWriter writer = exportConfig.getWriter();
|
int wrapColumn = exportConfig.getWrapColumn();
|
boolean wrapLines = wrapColumn > 1;
|
|
|
// Write the current DN.
|
writeDN("dn", dn, writer, wrapLines, wrapColumn);
|
|
|
// Write the changetype. Some older tools may not support the "moddn"
|
// changetype, so only use it if a newSuperior element has been provided,
|
// but use modrdn elsewhere.
|
String changeType = newSuperior == null ? "changetype: modrdn" : "changetype: moddn";
|
writeLDIFLine(new StringBuilder(changeType), writer, wrapLines, wrapColumn);
|
|
|
// Write the newRDN element.
|
StringBuilder rdnLine = new StringBuilder("newrdn");
|
appendLDIFSeparatorAndValue(rdnLine, ByteString.valueOf(newRDN.toString()));
|
writeLDIFLine(rdnLine, writer, wrapLines, wrapColumn);
|
|
|
// Write the deleteOldRDN element.
|
StringBuilder deleteOldRDNLine = new StringBuilder();
|
deleteOldRDNLine.append("deleteoldrdn: ");
|
deleteOldRDNLine.append(deleteOldRDN ? "1" : "0");
|
writeLDIFLine(deleteOldRDNLine, writer, wrapLines, wrapColumn);
|
|
if (newSuperior != null)
|
{
|
writeDN("newsuperior", newSuperior, writer, wrapLines, wrapColumn);
|
}
|
|
|
// Make sure there is a blank line after the entry.
|
writer.newLine();
|
}
|
|
private void writeDN(String attrType, DN dn, BufferedWriter writer,
|
boolean wrapLines, int wrapColumn) throws IOException
|
{
|
final StringBuilder newLine = new StringBuilder(attrType);
|
appendLDIFSeparatorAndValue(newLine, ByteString.valueOf(dn.toString()));
|
writeLDIFLine(newLine, writer, wrapLines, wrapColumn);
|
}
|
|
private void writeAttribute(CharSequence attrName, ByteString v,
|
BufferedWriter writer, boolean wrapLines, int wrapColumn)
|
throws IOException
|
{
|
StringBuilder newLine = new StringBuilder(attrName);
|
appendLDIFSeparatorAndValue(newLine, v);
|
writeLDIFLine(newLine, writer, wrapLines, wrapColumn);
|
}
|
|
/**
|
* Flushes the data written to the output stream or underlying file.
|
*
|
* @throws IOException If a problem occurs while flushing the output.
|
*/
|
public void flush()
|
throws IOException
|
{
|
writer.flush();
|
}
|
|
|
|
/**
|
* Closes the LDIF writer and the underlying output stream or file.
|
*
|
* @throws IOException If a problem occurs while closing the writer.
|
*/
|
@Override
|
public void close()
|
throws IOException
|
{
|
writer.flush();
|
writer.close();
|
}
|
|
|
|
/**
|
* Appends an LDIF separator and properly-encoded form of the given
|
* value to the provided buffer. If the value is safe to include
|
* as-is, then a single colon, a single space, space, and the
|
* provided value will be appended. Otherwise, two colons, a single
|
* space, and a base64-encoded form of the value will be appended.
|
*
|
* @param buffer The buffer to which the information should be
|
* appended. It must not be <CODE>null</CODE>.
|
* @param valueBytes The value to append to the buffer. It must not be
|
* <CODE>null</CODE>.
|
*/
|
public static void appendLDIFSeparatorAndValue(StringBuilder buffer,
|
ByteSequence valueBytes)
|
{
|
appendLDIFSeparatorAndValue(buffer, valueBytes, false, false);
|
}
|
|
/**
|
* Appends an LDIF separator and properly-encoded form of the given
|
* value to the provided buffer. If the value is safe to include
|
* as-is, then a single colon, a single space, space, and the
|
* provided value will be appended. Otherwise, two colons, a single
|
* space, and a base64-encoded form of the value will be appended.
|
* @param buffer The buffer to which the information should be
|
* appended. It must not be <CODE>null</CODE>.
|
* @param valueBytes The value to append to the buffer. It must not be
|
* <CODE>null</CODE>.
|
* @param isURL Whether the provided value is an URL value or not.
|
* @param isBase64 Whether the provided value is a base 64 value or not.
|
*/
|
public static void appendLDIFSeparatorAndValue(StringBuilder buffer,
|
ByteSequence valueBytes, boolean isURL, boolean isBase64)
|
{
|
ifNull(buffer, valueBytes);
|
|
|
// If the value is empty, then just append a single colon (the URL '<' if
|
// required) and a single space.
|
final boolean valueIsEmpty = valueBytes == null || valueBytes.length() == 0;
|
if (isURL)
|
{
|
buffer.append(":< ");
|
if (!valueIsEmpty)
|
{
|
buffer.append(valueBytes.toString());
|
}
|
}
|
else if (isBase64)
|
{
|
buffer.append(":: ");
|
if (!valueIsEmpty)
|
{
|
buffer.append(valueBytes.toString());
|
}
|
}
|
else if (needsBase64Encoding(valueBytes))
|
{
|
buffer.append(":: ");
|
buffer.append(Base64.encode(valueBytes));
|
}
|
else
|
{
|
buffer.append(": ");
|
if (!valueIsEmpty)
|
{
|
buffer.append(valueBytes.toString());
|
}
|
}
|
}
|
|
|
|
/**
|
* Writes the provided line to LDIF using the provided information.
|
*
|
* @param line The line of information to write. It must not be
|
* <CODE>null</CODE>.
|
* @param writer The writer to which the data should be written. It
|
* must not be <CODE>null</CODE>.
|
* @param wrapLines Indicates whether to wrap long lines.
|
* @param wrapColumn The column at which long lines should be wrapped.
|
*
|
* @throws IOException If a problem occurs while writing the information.
|
*/
|
public static void writeLDIFLine(StringBuilder line, BufferedWriter writer,
|
boolean wrapLines, int wrapColumn)
|
throws IOException
|
{
|
ifNull(line, writer);
|
|
int length = line.length();
|
if (wrapLines && length > wrapColumn)
|
{
|
writer.write(line.substring(0, wrapColumn));
|
writer.newLine();
|
|
int pos = wrapColumn;
|
while (pos < length)
|
{
|
int writeLength = Math.min(wrapColumn-1, length-pos);
|
writer.write(' ');
|
writer.write(line.substring(pos, pos+writeLength));
|
writer.newLine();
|
|
pos += wrapColumn-1;
|
}
|
}
|
else
|
{
|
writer.write(line.toString());
|
writer.newLine();
|
}
|
}
|
}
|
