poi/src/testcases/org/apache/poi/poifs/filesystem/TestOle10Native.java

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   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
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       http://www.apache.org/licenses/LICENSE-2.0

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   distributed under the License is distributed on an "AS IS" BASIS,
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package org.apache.poi.poifs.filesystem;

import static org.hamcrest.core.IsEqual.equalTo;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertThat;

import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;

import org.apache.poi.POIDataSamples;
import org.apache.poi.util.IOUtils;
import org.apache.poi.util.RecordFormatException;
import org.junit.Rule;
import org.junit.Test;
import org.junit.rules.ExpectedException;

public class TestOle10Native {
    private static final POIDataSamples dataSamples = POIDataSamples.getPOIFSInstance();

    @Rule
    public ExpectedException thrown = ExpectedException.none();

    @Test
    public void testOleNative() throws IOException, Ole10NativeException {
        POIFSFileSystem fs = new POIFSFileSystem(dataSamples.openResourceAsStream("oleObject1.bin"));

        Ole10Native ole = Ole10Native.createFromEmbeddedOleObject(fs);

        assertEquals("File1.svg", ole.getLabel());
        assertEquals("D:\\Documents and Settings\\rsc\\My Documents\\file1.svg", ole.getCommand());
    }

    @Test
    public void testFiles() throws IOException, Ole10NativeException {
        File[] files = {
                // bug 51891
                POIDataSamples.getPOIFSInstance().getFile("multimedia.doc"),
                // tika bug 1072
                POIDataSamples.getPOIFSInstance().getFile("20-Force-on-a-current-S00.doc"),
                // other files containing ole10native records ...
                POIDataSamples.getDocumentInstance().getFile("Bug53380_3.doc"),
                POIDataSamples.getDocumentInstance().getFile("Bug47731.doc")
        };

        for (File f : files) {
            POIFSFileSystem fs = new POIFSFileSystem(f, true);
            List<Entry> entries = new ArrayList<>();
            findOle10(entries, fs.getRoot(), "/");

            for (Entry e : entries) {
                ByteArrayOutputStream bosExp = new ByteArrayOutputStream();
                InputStream is = ((DirectoryNode)e.getParent()).createDocumentInputStream(e);
                IOUtils.copy(is,bosExp);
                is.close();

                Ole10Native ole = Ole10Native.createFromEmbeddedOleObject((DirectoryNode)e.getParent());

                ByteArrayOutputStream bosAct = new ByteArrayOutputStream();
                ole.writeOut(bosAct);

                assertThat(bosExp.toByteArray(), equalTo(bosAct.toByteArray()));
            }

            fs.close();
        }
    }

    private void findOle10(List<Entry> entries, DirectoryNode dn, String path) {
        Iterator<Entry> iter = dn.getEntries();
        while (iter.hasNext()) {
            Entry e = iter.next();
            if (Ole10Native.OLE10_NATIVE.equals(e.getName())) {
                if (entries != null) entries.add(e);
                // System.out.println(filename+" : "+path);
            } else if (e.isDirectoryEntry()) {
                findOle10(entries, (DirectoryNode)e, path+e.getName()+"/");
            }
        }
    }

    @Test
    public void testOleNativeOOM() throws IOException, Ole10NativeException {
        POIFSFileSystem fs = new POIFSFileSystem(dataSamples.openResourceAsStream("60256.bin"));
        thrown.expect(RecordFormatException.class);
        thrown.expectMessage("Tried to allocate");
        Ole10Native.createFromEmbeddedOleObject(fs);
    }

}