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Avoid exception when reading ClipboardData packet in OLE property sets, see bugzilla 45583 

git-svn-id: https://svn.apache.org/repos/asf/poi/trunk@806172 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Yegor Kozlov 2009-08-20 13:49:33 +00:00
parent f0ebb76204
commit 4d835fbda7
10 changed files with 40 additions and 31 deletions
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2
src/documentation/content/xdocs/status.xml
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@ -33,7 +33,7 @@
<changes>
<release version="3.5-beta7" date="2009-??-??">
<action dev="POI-DEVELOPERS" type="add">47668 - Improved parsing of OOXML documents</action>
<action dev="POI-DEVELOPERS" type="add">45583 - Avoid exception when reading ClipboardData packet in OLE property sets</action>
<action dev="POI-DEVELOPERS" type="add">47652 - Added support for reading encrypted workbooks</action>
<action dev="POI-DEVELOPERS" type="add">47604 - Implementation of an XML to XLSX Importer using Custom XML Mapping</action>
<action dev="POI-DEVELOPERS" type="fix">47620 - Avoid FormulaParseException in XSSFWorkbook.setRepeatingRowsAndColumns when removing repeated rows and columns</action>

23
src/java/org/apache/poi/POIDocument.java
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@ -47,19 +47,19 @@ import org.apache.poi.util.POILogger;
*/
public abstract class POIDocument {
/** Holds metadata on our document */
protected SummaryInformation sInf;
private SummaryInformation sInf;
/** Holds further metadata on our document */
protected DocumentSummaryInformation dsInf;
private DocumentSummaryInformation dsInf;
/** The open POIFS FileSystem that contains our document */
protected POIFSFileSystem filesystem;
/** The directory that our document lives in */
protected DirectoryNode directory;
/** For our own logging use */
protected POILogger logger = POILogFactory.getLogger(this.getClass());
private final static POILogger logger = POILogFactory.getLogger(POIDocument.class);
/* Have the property streams been read yet? (Only done on-demand) */
protected boolean initialized = false;
private boolean initialized = false;
protected POIDocument(DirectoryNode dir, POIFSFileSystem fs) {
@ -120,7 +120,10 @@ public abstract class POIDocument {
* if it wasn't found
*/
protected PropertySet getPropertySet(String setName) {
DocumentInputStream dis;
//directory can be null when creating new documents
if(directory == null) return null;
DocumentInputStream dis;
try {
// Find the entry, and get an input stream for it
dis = directory.createDocumentInputStream(setName);
@ -157,14 +160,16 @@ public abstract class POIDocument {
* @param writtenEntries a list of POIFS entries to add the property names too
*/
protected void writeProperties(POIFSFileSystem outFS, List writtenEntries) throws IOException {
if(sInf != null) {
writePropertySet(SummaryInformation.DEFAULT_STREAM_NAME,sInf,outFS);
SummaryInformation si = getSummaryInformation();
if(si != null) {
writePropertySet(SummaryInformation.DEFAULT_STREAM_NAME, si, outFS);
if(writtenEntries != null) {
writtenEntries.add(SummaryInformation.DEFAULT_STREAM_NAME);
}
}
if(dsInf != null) {
writePropertySet(DocumentSummaryInformation.DEFAULT_STREAM_NAME,dsInf,outFS);
DocumentSummaryInformation dsi = getDocumentSummaryInformation();
if(dsi != null) {
writePropertySet(DocumentSummaryInformation.DEFAULT_STREAM_NAME, dsi, outFS);
if(writtenEntries != null) {
writtenEntries.add(DocumentSummaryInformation.DEFAULT_STREAM_NAME);
}

10
src/java/org/apache/poi/hpsf/Section.java
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@ -240,16 +240,6 @@ public class Section
{
ple = propertyList.get(propertyCount - 1);
ple.length = size - ple.offset;
if (ple.length <= 0)
{
final StringBuffer b = new StringBuffer();
b.append("The property set claims to have a size of ");
b.append(size);
b.append(" bytes. However, it exceeds ");
b.append(ple.offset);
b.append(" bytes.");
throw new IllegalPropertySetDataException(b.toString());
}
}
/* Look for the codepage. */

17
src/java/org/apache/poi/hpsf/VariantSupport.java
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@ -272,9 +272,20 @@ public class VariantSupport extends Variant
}
case Variant.VT_CF:
{
if(l1 < 0) {
/**
* YK: reading the ClipboardData packet (VT_CF) is not quite correct.
* The size of the data is determined by the first four bytes of the packet
* while the current implementation calculates it in the Section constructor.
* Test files in Bugzilla 42726 and 45583 clearly show that this approach does not always work.
* The workaround below attempts to gracefully handle such cases instead of throwing exceptions.
*
* August 20, 2009
*/
l1 = LittleEndian.getInt(src, o1); o1 += LittleEndian.INT_SIZE;
}
final byte[] v = new byte[l1];
for (int i = 0; i < l1; i++)
v[i] = src[(o1 + i)];
System.arraycopy(src, o1, v, 0, v.length);
value = v;
break;
}
@ -509,7 +520,7 @@ public class VariantSupport extends Variant
}
case Variant.VT_CF:
{
final byte[] b = (byte[]) value;
final byte[] b = (byte[]) value;
out.write(b);
length = b.length;
break;

2
src/java/org/apache/poi/hpsf/extractor/HPSFPropertiesExtractor.java
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@ -55,7 +55,7 @@ public class HPSFPropertiesExtractor extends POITextExtractor {
text.append( getPropertiesText(dsi) );
// Now custom ones
CustomProperties cps = dsi.getCustomProperties();
CustomProperties cps = dsi == null ? null : dsi.getCustomProperties();
if(cps != null) {
Iterator keys = cps.keySet().iterator();
while(keys.hasNext()) {

3
src/scratchpad/src/org/apache/poi/hdgf/HDGFDiagram.java
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@ -68,9 +68,6 @@ public final class HDGFDiagram extends POIDocument {
_docstream = new byte[docProps.getSize()];
dir.createDocumentInputStream("VisioDocument").read(_docstream);
// Read in the common POI streams
readProperties();
// Check it's really visio
String typeString = new String(_docstream, 0, 20);
if(! typeString.equals(VISIO_HEADER)) {

3
src/scratchpad/src/org/apache/poi/hslf/HSLFSlideShow.java
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@ -146,9 +146,6 @@ public final class HSLFSlideShow extends POIDocument {
// Now, build records based on the PowerPoint stream
buildRecords();
// Look for Property Streams:
readProperties();
// Look for any other streams
readOtherStreams();

1
src/scratchpad/src/org/apache/poi/hwpf/HWPFDocument.java
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@ -170,7 +170,6 @@ public final class HWPFDocument extends POIDocument
{
// Sort out the hpsf properties
super(directory, pfilesystem);
readProperties();
// read in the main stream.
DocumentEntry documentProps = (DocumentEntry)

10
src/testcases/org/apache/poi/hpsf/extractor/TestHPSFPropertiesExtractor.java
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@ -25,6 +25,7 @@ import junit.framework.TestCase;
import org.apache.poi.hssf.extractor.ExcelExtractor;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.hssf.HSSFTestDataSamples;
import org.apache.poi.poifs.filesystem.POIFSFileSystem;
public final class TestHPSFPropertiesExtractor extends TestCase {
@ -117,4 +118,13 @@ public final class TestHPSFPropertiesExtractor extends TestCase {
assertTrue(fsText.indexOf("AUTHOR = marshall") > -1);
assertTrue(fsText.indexOf("TITLE = Titel: \u00c4h") > -1);
}
public void test42726() throws Exception {
HPSFPropertiesExtractor ex = new HPSFPropertiesExtractor(HSSFTestDataSamples.openSampleWorkbook("42726.xls"));
String txt = ex.getText();
assertTrue(txt.indexOf("PID_AUTHOR") != -1);
assertTrue(txt.indexOf("PID_EDITTIME") != -1);
assertTrue(txt.indexOf("PID_REVNUMBER") != -1);
assertTrue(txt.indexOf("PID_THUMBNAIL") != -1);
}
}

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src/testcases/org/apache/poi/hssf/data/42726.xls Executable file
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