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Bug 54332 - WMF extraction failing in Tika for older PowerPoint Files 

git-svn-id: https://svn.apache.org/repos/asf/poi/trunk@1687398 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Andreas Beeker 2015-06-24 23:34:03 +00:00
parent dfca03ec03
commit 1b1d5835b6
13 changed files with 199 additions and 51 deletions
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1
src/scratchpad/src/org/apache/poi/hslf/HSLFSlideShow.java
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@ -401,6 +401,7 @@ public final class HSLFSlideShow extends POIDocument {
// Build the PictureData object from the data
try {
PictureData pict = PictureData.create(type - 0xF018);
pict.setSignature(signature);
// Copy the data, ready to pass to PictureData
byte[] imgdata = new byte[imgsize];

11
src/scratchpad/src/org/apache/poi/hslf/blip/Bitmap.java
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@ -32,15 +32,18 @@ public abstract class Bitmap extends PictureData {
public byte[] getData(){
byte[] rawdata = getRawData();
byte[] imgdata = new byte[rawdata.length-17];
System.arraycopy(rawdata, 17, imgdata, 0, imgdata.length);
int prefixLen = 16*uidInstanceCount+1;
byte[] imgdata = new byte[rawdata.length-prefixLen];
System.arraycopy(rawdata, prefixLen, imgdata, 0, imgdata.length);
return imgdata;
}
public void setData(byte[] data) throws IOException {
ByteArrayOutputStream out = new ByteArrayOutputStream();
byte[] checksum = getChecksum(data);
out.write(checksum);
for (int i=0; i<uidInstanceCount; i++) {
byte[] checksum = getChecksum(data);
out.write(checksum);
}
out.write(0);
out.write(data);

24
src/scratchpad/src/org/apache/poi/hslf/blip/DIB.java
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@ -31,7 +31,7 @@ public final class DIB extends Bitmap {
/**
* Size of the BITMAPFILEHEADER structure preceding the actual DIB bytes
*/
public static final int HEADER_SIZE = 14;
private static final int HEADER_SIZE = 14;
/**
* @return type of this picture
@ -42,13 +42,29 @@ public final class DIB extends Bitmap {
}
/**
* DIB signature is <code>0x7A80</code>
* DIB signature is {@code 0x7A80} or {@code 0x7A90}
*
* @return DIB signature (<code>0x7A80</code>)
* @return DIB signature ({@code 0x7A80} or {@code 0x7A90})
*/
public int getSignature(){
return 0x7A80;
return (uidInstanceCount == 1 ? 0x7A80 : 0x7A90);
}
/**
* Sets the DIB signature - either {@code 0x7A80} or {@code 0x7A90}
*/
public void setSignature(int signature) {
switch (signature) {
case 0x7A80:
uidInstanceCount = 1;
break;
case 0x7A90:
uidInstanceCount = 2;
break;
default:
throw new IllegalArgumentException(signature+" is not a valid instance/signature value for DIB");
}
}
public byte[] getData(){
return addBMPHeader ( super.getData() );

24
src/scratchpad/src/org/apache/poi/hslf/blip/EMF.java
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@ -84,11 +84,27 @@ public final class EMF extends Metafile {
}
/**
* EMF signature is <code>0x3D40</code>
* EMF signature is {@code 0x3D40} or {@code 0x3D50}
*
* @return EMF signature (<code>0x3D40</code>)
* @return EMF signature ({@code 0x3D40} or {@code 0x3D50})
*/
public int getSignature(){
return 0x3D40;
public int getSignature() {
return (uidInstanceCount == 1 ? 0x3D40 : 0x3D50);
}
/**
* Sets the EMF signature - either {@code 0x3D40} or {@code 0x3D50}
*/
public void setSignature(int signature) {
switch (signature) {
case 0x3D40:
uidInstanceCount = 1;
break;
case 0x3D50:
uidInstanceCount = 2;
break;
default:
throw new IllegalArgumentException(signature+" is not a valid instance/signature value for EMF");
}
}
}

46
src/scratchpad/src/org/apache/poi/hslf/blip/JPEG.java
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@ -26,6 +26,10 @@ import org.apache.poi.hslf.model.Picture;
*/
public final class JPEG extends Bitmap {
public enum ColorSpace { rgb, cymk };
private ColorSpace colorSpace = ColorSpace.rgb;
/**
* @return type of this picture
* @see org.apache.poi.hslf.model.Picture#JPEG
@ -34,12 +38,48 @@ public final class JPEG extends Bitmap {
return Picture.JPEG;
}
public ColorSpace getColorSpace() {
return colorSpace;
}
public void setColorSpace(ColorSpace colorSpace) {
this.colorSpace = colorSpace;
}
/**
* JPEG signature is <code>0x46A0</code>
* JPEG signature is one of {@code 0x46A0, 0x46B0, 0x6E20, 0x6E30}
*
* @return JPEG signature (<code>0x46A0</code>)
* @return JPEG signature ({@code 0x46A0, 0x46B0, 0x6E20, 0x6E30})
*/
public int getSignature(){
return 0x46A0;
return (colorSpace == ColorSpace.rgb)
? (uidInstanceCount == 1 ? 0x46A0 : 0x46B0)
: (uidInstanceCount == 1 ? 0x6E20 : 0x6E30);
}
/**
* Sets the PICT signature - either {@code 0x5420} or {@code 0x5430}
*/
public void setSignature(int signature) {
switch (signature) {
case 0x46A0:
uidInstanceCount = 1;
colorSpace = ColorSpace.rgb;
break;
case 0x46B0:
uidInstanceCount = 2;
colorSpace = ColorSpace.rgb;
break;
case 0x6E20:
uidInstanceCount = 1;
colorSpace = ColorSpace.cymk;
break;
case 0x6E30:
uidInstanceCount = 2;
colorSpace = ColorSpace.cymk;
break;
default:
throw new IllegalArgumentException(signature+" is not a valid instance/signature value for JPEG");
}
}
}

4
src/scratchpad/src/org/apache/poi/hslf/blip/Metafile.java
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@ -86,8 +86,8 @@ public abstract class Metafile extends PictureData {
zipsize = LittleEndian.getInt(data, pos); pos += LittleEndian.INT_SIZE;
compression = LittleEndian.getUnsignedByte(data, pos); pos++;
filter = LittleEndian.getUnsignedByte(data, pos); pos++;
compression = LittleEndian.getUByte(data, pos); pos++;
filter = LittleEndian.getUByte(data, pos); pos++;
}
public void write(OutputStream out) throws IOException {

27
src/scratchpad/src/org/apache/poi/hslf/blip/PICT.java
View File

@ -33,10 +33,6 @@ import org.apache.poi.hslf.model.Shape;
*/
public final class PICT extends Metafile {
public PICT(){
super();
}
/**
* Extract compressed PICT data from a ppt
*/
@ -46,7 +42,7 @@ public final class PICT extends Metafile {
byte[] macheader = new byte[512];
ByteArrayOutputStream out = new ByteArrayOutputStream();
out.write(macheader);
int pos = CHECKSUM_SIZE;
int pos = CHECKSUM_SIZE*uidInstanceCount;
byte[] pict;
try {
pict = read(rawdata, pos);
@ -109,12 +105,27 @@ public final class PICT extends Metafile {
}
/**
* PICT signature is <code>0x5430</code>
* PICT signature is {@code 0x5420} or {@code 0x5430}
*
* @return PICT signature (<code>0x5430</code>)
* @return PICT signature ({@code 0x5420} or {@code 0x5430})
*/
public int getSignature(){
return 0x5430;
return (uidInstanceCount == 1 ? 0x5420 : 0x5430);
}
/**
* Sets the PICT signature - either {@code 0x5420} or {@code 0x5430}
*/
public void setSignature(int signature) {
switch (signature) {
case 0x5420:
uidInstanceCount = 1;
break;
case 0x5430:
uidInstanceCount = 2;
break;
default:
throw new IllegalArgumentException(signature+" is not a valid instance/signature value for PICT");
}
}
}

30
src/scratchpad/src/org/apache/poi/hslf/blip/PNG.java
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@ -17,14 +17,8 @@
package org.apache.poi.hslf.blip;
import org.apache.poi.util.PngUtils;
import org.apache.poi.hslf.model.Picture;
import org.apache.poi.hslf.exceptions.HSLFException;
import javax.imageio.ImageIO;
import java.awt.image.BufferedImage;
import java.io.ByteArrayInputStream;
import java.io.IOException;
import org.apache.poi.util.PngUtils;
/**
* Represents a PNG picture data in a PPT file
@ -59,11 +53,27 @@ public final class PNG extends Bitmap {
}
/**
* PNG signature is <code>0x6E00</code>
* PNG signature is {@code 0x6E00} or {@code 0x6E10}
*
* @return PNG signature (<code>0x6E00</code>)
* @return PNG signature ({@code 0x6E00} or {@code 0x6E10})
*/
public int getSignature(){
return 0x6E00;
return (uidInstanceCount == 1 ? 0x6E00 : 0x6E10);
}
/**
* Sets the PNG signature - either {@code 0x6E00} or {@code 0x6E10}
*/
public void setSignature(int signature) {
switch (signature) {
case 0x6E00:
uidInstanceCount = 1;
break;
case 0x6E10:
uidInstanceCount = 2;
break;
default:
throw new IllegalArgumentException(signature+" is not a valid instance/signature value for PNG");
}
}
}

27
src/scratchpad/src/org/apache/poi/hslf/blip/WMF.java
View File

@ -43,8 +43,8 @@ public final class WMF extends Metafile {
ByteArrayOutputStream out = new ByteArrayOutputStream();
InputStream is = new ByteArrayInputStream( rawdata );
Header header = new Header();
header.read(rawdata, CHECKSUM_SIZE);
is.skip(header.getSize() + CHECKSUM_SIZE);
header.read(rawdata, CHECKSUM_SIZE*uidInstanceCount);
is.skip(header.getSize() + CHECKSUM_SIZE*uidInstanceCount);
AldusHeader aldus = new AldusHeader();
aldus.left = header.bounds.x;
@ -84,7 +84,9 @@ public final class WMF extends Metafile {
byte[] checksum = getChecksum(data);
ByteArrayOutputStream out = new ByteArrayOutputStream();
out.write(checksum);
for (int i=0; i<uidInstanceCount; i++) {
out.write(checksum);
}
header.write(out);
out.write(compressed);
@ -99,12 +101,27 @@ public final class WMF extends Metafile {
}
/**
* WMF signature is <code>0x2160</code>
* WMF signature is either {@code 0x2160} or {@code 0x2170}
*/
public int getSignature(){
return 0x2160;
return (uidInstanceCount == 1 ? 0x2160 : 0x2170);
}
/**
* Sets the WMF signature - either {@code 0x2160} or {@code 0x2170}
*/
public void setSignature(int signature) {
switch (signature) {
case 0x2160:
uidInstanceCount = 1;
break;
case 0x2170:
uidInstanceCount = 2;
break;
default:
throw new IllegalArgumentException(signature+" is not a valid instance/signature value for WMF");
}
}
/**
* Aldus Placeable Metafile header - 22 byte structure before WMF data.

19
src/scratchpad/src/org/apache/poi/hslf/usermodel/PictureData.java
View File

@ -55,11 +55,17 @@ public abstract class PictureData {
* Binary data of the picture
*/
private byte[] rawdata;
/**
* The offset to the picture in the stream
*/
protected int offset;
/**
* The instance type/signatures defines if one or two UID instances will be included
*/
protected int uidInstanceCount = 1;
/**
* Returns type of this picture.
* Must be one of the static constants defined in the <code>Picture<code> class.
@ -82,8 +88,17 @@ public abstract class PictureData {
/**
* Blip signature.
*/
protected abstract int getSignature();
public abstract int getSignature();
public abstract void setSignature(int signature);
/**
* The instance type/signatures defines if one or two UID instances will be included
*/
protected int getUIDInstanceCount() {
return uidInstanceCount;
}
protected static final ImagePainter[] painters = new ImagePainter[8];
static {
PictureData.setImagePainter(Picture.PNG, new BitmapPainter());

37
src/scratchpad/testcases/org/apache/poi/hslf/model/TestPicture.java
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@ -131,18 +131,37 @@ public final class TestPicture {
null // EMF
};
for (int i = 0; i < pictures.length; i++) {
BufferedImage image = ImageIO.read(new ByteArrayInputStream(pictures[i].getData()));
if (pictures[i].getType() != Picture.WMF && pictures[i].getType() != Picture.EMF) {
assertNotNull(image);
int[] dimensions = expectedSizes[i];
assertEquals(dimensions[0], image.getWidth());
assertEquals(dimensions[1], image.getHeight());
int i=0;
for (PictureData pd : pictures) {
BufferedImage image = ImageIO.read(new ByteArrayInputStream(pd.getData()));
switch (pd.getType()) {
case Picture.WMF:
case Picture.EMF:
break;
default:
assertNotNull(image);
int[] dimensions = expectedSizes[i];
assertEquals(dimensions[0], image.getWidth());
assertEquals(dimensions[1], image.getHeight());
break;
}
i++;
}
}
@Test
public void bug54332() throws Exception {
HSLFSlideShow hss = new HSLFSlideShow(_slTests.openResourceAsStream("54332a.ppt")); // TIKA-1046
PictureData[] pictures = hss.getPictures();
assertEquals(1, pictures.length);
assertEquals(102352, pictures[0].getData().length);
hss = new HSLFSlideShow(_slTests.openResourceAsStream("54332b.ppt")); // TIKA-1612
pictures = hss.getPictures();
assertEquals(1, pictures.length);
assertEquals(55830, pictures[0].getData().length);
}
@Test
@Ignore("Just for visual validation - antialiasing is different on various systems")

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