From: Yegor Kozlov <yegor@apache.org>
Date: Wed, 30 Apr 2008 06:19:38 +0000 (+0000)
Subject: correctly process PICT blips (see bug #44886)
X-Git-Tag: REL_3_2_FINAL~381
X-Git-Url: https://source.dussan.org/?a=commitdiff_plain;h=59ad8713d07bef5ec6535c463364ce42cddc9cb6;p=poi.git

correctly process PICT blips (see bug #44886)

git-svn-id: https://svn.apache.org/repos/asf/poi/trunk@652288 13f79535-47bb-0310-9956-ffa450edef68
---

diff --git a/src/java/org/apache/poi/ddf/EscherMetafileBlip.java b/src/java/org/apache/poi/ddf/EscherMetafileBlip.java
index 99faa61bc2..75c282ea59 100644
--- a/src/java/org/apache/poi/ddf/EscherMetafileBlip.java
+++ b/src/java/org/apache/poi/ddf/EscherMetafileBlip.java
@@ -41,9 +41,20 @@ public class EscherMetafileBlip
     public static final short RECORD_ID_WMF = (short) 0xF018 + 3;
     public static final short RECORD_ID_PICT = (short) 0xF018 + 4;
 
+    /**
+     * BLIP signatures as defined in the escher spec
+     */
+    public static final short SIGNATURE_EMF  = 0x3D40;
+    public static final short SIGNATURE_WMF  = 0x2160;
+    public static final short SIGNATURE_PICT = 0x5420;
+
     private static final int HEADER_SIZE = 8;
 
     private byte[] field_1_UID;
+    /**
+     * The primary UID is only saved to disk if (blip_instance ^ blip_signature == 1)
+     */
+    private byte[] field_2_UID;
     private int field_2_cb;
     private int field_3_rcBounds_x1;
     private int field_3_rcBounds_y1;
@@ -72,6 +83,12 @@ public class EscherMetafileBlip
 
         field_1_UID = new byte[16];
         System.arraycopy( data, pos, field_1_UID, 0, 16 ); pos += 16;
+
+        if((getOptions() ^ getSignature()) == 0x10){
+            field_2_UID = new byte[16];
+            System.arraycopy( data, pos, field_2_UID, 0, 16 ); pos += 16;
+        }
+
         field_2_cb = LittleEndian.getInt( data, pos ); pos += 4;
         field_3_rcBounds_x1 = LittleEndian.getInt( data, pos ); pos += 4;
         field_3_rcBounds_y1 = LittleEndian.getInt( data, pos ); pos += 4;
@@ -83,11 +100,8 @@ public class EscherMetafileBlip
         field_6_fCompression = data[pos]; pos++;
         field_7_fFilter = data[pos]; pos++;
 
-        // Bit of a snag - trusting field_5_cbSave results in inconsistent
-        //  record size in some cases. So, just check the data left
-        int remainingBytes = bytesAfterHeader - 50;
-        raw_pictureData = new byte[remainingBytes];
-        System.arraycopy( data, pos, raw_pictureData, 0, remainingBytes );
+        raw_pictureData = new byte[field_5_cbSave];
+        System.arraycopy( data, pos, raw_pictureData, 0, field_5_cbSave );
 
         // 0 means DEFLATE compression
         // 0xFE means no compression
@@ -121,9 +135,12 @@ public class EscherMetafileBlip
         int pos = offset;
         LittleEndian.putShort( data, pos, getOptions() ); pos += 2;
         LittleEndian.putShort( data, pos, getRecordId() ); pos += 2;
-        LittleEndian.putInt( data, getRecordSize() - HEADER_SIZE ); pos += 4;
+        LittleEndian.putInt( data, pos, getRecordSize() - HEADER_SIZE ); pos += 4;
 
-        System.arraycopy( field_1_UID, 0, data, pos, 16 ); pos += 16;
+        System.arraycopy( field_1_UID, 0, data, pos, field_1_UID.length ); pos += field_1_UID.length;
+        if((getOptions() ^ getSignature()) == 0x10){
+            System.arraycopy( field_2_UID, 0, data, pos, field_2_UID.length ); pos += field_2_UID.length;
+        }
         LittleEndian.putInt( data, pos, field_2_cb ); pos += 4;
         LittleEndian.putInt( data, pos, field_3_rcBounds_x1 ); pos += 4;
         LittleEndian.putInt( data, pos, field_3_rcBounds_y1 ); pos += 4;
@@ -138,7 +155,7 @@ public class EscherMetafileBlip
         System.arraycopy( raw_pictureData, 0, data, pos, raw_pictureData.length );
 
         listener.afterRecordSerialize(offset + getRecordSize(), getRecordId(), getRecordSize(), this);
-        return HEADER_SIZE + 16 + 1 + raw_pictureData.length;
+        return getRecordSize();
     }
 
     /**
@@ -164,7 +181,7 @@ public class EscherMetafileBlip
         }
         catch ( IOException e )
         {
-            log.log(POILogger.INFO, "Possibly corrupt compression or non-compressed data", e);
+            log.log(POILogger.WARN, "Possibly corrupt compression or non-compressed data", e);
             return data;
         }
     }
@@ -176,7 +193,11 @@ public class EscherMetafileBlip
      */
     public int getRecordSize()
     {
-        return 8 + 50 + raw_pictureData.length;
+        int size = 8 + 50 + raw_pictureData.length;
+        if((getOptions() ^ getSignature()) == 0x10){
+            size += field_2_UID.length;
+        }
+        return size;
     }
 
     public byte[] getUID()
@@ -189,6 +210,16 @@ public class EscherMetafileBlip
         this.field_1_UID = field_1_UID;
     }
 
+    public byte[] getPrimaryUID()
+    {
+        return field_2_UID;
+    }
+
+    public void setPrimaryUID( byte[] field_2_UID )
+    {
+        this.field_2_UID = field_2_UID;
+    }
+
     public int getUncompressedSize()
     {
         return field_2_cb;
@@ -267,6 +298,7 @@ public class EscherMetafileBlip
                 "  RecordId: 0x" + HexDump.toHex( getRecordId() ) + nl +
                 "  Options: 0x" + HexDump.toHex( getOptions() ) + nl +
                 "  UID: 0x" + HexDump.toHex( field_1_UID ) + nl +
+                (field_2_UID == null ? "" : ("  UID2: 0x" + HexDump.toHex( field_2_UID ) + nl)) +
                 "  Uncompressed Size: " + HexDump.toHex( field_2_cb ) + nl +
                 "  Bounds: " + getBounds() + nl +
                 "  Size in EMU: " + getSizeEMU() + nl +
@@ -276,4 +308,19 @@ public class EscherMetafileBlip
                 "  Extra Data:" + nl + extraData;
     }
 
+    /**
+     * Return the blip signature
+     *
+     * @return the blip signature
+     */
+    public short getSignature(){
+        short sig = 0;
+        switch(getRecordId()){
+            case RECORD_ID_EMF: sig = SIGNATURE_EMF; break;
+            case RECORD_ID_WMF: sig = SIGNATURE_WMF; break;
+            case RECORD_ID_PICT: sig = SIGNATURE_PICT; break;
+            default: log.log(POILogger.WARN, "Unknown metafile: " + getRecordId()); break;
+        }
+        return sig;
+    }
 }
diff --git a/src/java/org/apache/poi/hssf/usermodel/HSSFPictureData.java b/src/java/org/apache/poi/hssf/usermodel/HSSFPictureData.java
index 439100a53a..487c277f39 100644
--- a/src/java/org/apache/poi/hssf/usermodel/HSSFPictureData.java
+++ b/src/java/org/apache/poi/hssf/usermodel/HSSFPictureData.java
@@ -19,6 +19,7 @@ package org.apache.poi.hssf.usermodel;
 
 import org.apache.poi.ddf.EscherBitmapBlip;
 import org.apache.poi.ddf.EscherBlipRecord;
+import org.apache.poi.ddf.EscherMetafileBlip;
 
 /**
  * Represents binary data stored in the file.  Eg. A GIF, JPEG etc...
@@ -69,19 +70,19 @@ public class HSSFPictureData
      */
     public String suggestFileExtension()
     {
-        switch (blip.getOptions() & FORMAT_MASK)
+        switch (blip.getRecordId())
         {
-            case MSOBI_WMF:
+            case EscherMetafileBlip.RECORD_ID_WMF:
                 return "wmf";
-            case MSOBI_EMF:
+            case EscherMetafileBlip.RECORD_ID_EMF:
                 return "emf";
-            case MSOBI_PICT:
+            case EscherMetafileBlip.RECORD_ID_PICT:
                 return "pict";
-            case MSOBI_PNG:
+            case EscherBitmapBlip.RECORD_ID_PNG:
                 return "png";
-            case MSOBI_JPEG:
+            case EscherBitmapBlip.RECORD_ID_JPEG:
                 return "jpeg";
-            case MSOBI_DIB:
+            case EscherBitmapBlip.RECORD_ID_DIB:
                 return "dib";
             default:
                 return "";
diff --git a/src/testcases/org/apache/poi/ddf/AllPOIDDFTests.java b/src/testcases/org/apache/poi/ddf/AllPOIDDFTests.java
index 9b5fc0bfef..ca82ac83cf 100755
--- a/src/testcases/org/apache/poi/ddf/AllPOIDDFTests.java
+++ b/src/testcases/org/apache/poi/ddf/AllPOIDDFTests.java
@@ -42,6 +42,7 @@ public final class AllPOIDDFTests {
         result.addTestSuite(TestEscherSplitMenuColorsRecord.class);
         result.addTestSuite(TestEscherSpRecord.class);
         result.addTestSuite(TestUnknownEscherRecord.class);
+        result.addTestSuite(TestEscherBlipRecord.class);
         return result;
     }
 }
diff --git a/src/testcases/org/apache/poi/ddf/TestEscherBlipRecord.java b/src/testcases/org/apache/poi/ddf/TestEscherBlipRecord.java
new file mode 100755
index 0000000000..f7fecb666e
--- /dev/null
+++ b/src/testcases/org/apache/poi/ddf/TestEscherBlipRecord.java
@@ -0,0 +1,156 @@
+
+/* ====================================================================
+   Licensed to the Apache Software Foundation (ASF) under one or more
+   contributor license agreements.  See the NOTICE file distributed with
+   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
+   the License.  You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
+==================================================================== */
+        
+package org.apache.poi.ddf;
+
+import junit.framework.TestCase;
+import org.apache.poi.util.HexRead;
+import org.apache.poi.util.HexDump;
+
+import java.io.IOException;
+import java.io.File;
+import java.io.FileInputStream;
+import java.util.Iterator;
+import java.util.Arrays;
+
+/**
+ * Test read/serialize of escher blip records
+ *
+ * @author Yegor Kozlov
+ */
+public class TestEscherBlipRecord extends TestCase
+{
+    protected String cwd = System.getProperty("DDF.testdata.path");
+
+    //test reading/serializing of a PNG blip
+    public void testReadPNG() throws IOException {
+        //provided in bug-44886
+        byte[] data = read(new File(cwd, "Container.dat"));
+
+        EscherContainerRecord record = new EscherContainerRecord();
+        record.fillFields(data, 0, new DefaultEscherRecordFactory());
+        EscherContainerRecord bstore = (EscherContainerRecord)record.getChildRecords().get(1);
+        EscherBSERecord bse1 = (EscherBSERecord)bstore.getChildRecords().get(0);
+        assertEquals(EscherBSERecord.BT_PNG, bse1.getBlipTypeWin32());
+        assertEquals(EscherBSERecord.BT_PNG, bse1.getBlipTypeMacOS());
+        assertTrue(Arrays.equals(new byte[]{
+            0x65, 0x07, 0x4A, (byte)0x8D, 0x3E, 0x42, (byte)0x8B, (byte)0xAC,
+            0x1D, (byte)0x89, 0x35, 0x4F, 0x48, (byte)0xFA, 0x37, (byte)0xC2
+        }, bse1.getUid()));
+        assertEquals(255, bse1.getTag());
+        assertEquals(32308, bse1.getSize());
+
+        EscherBitmapBlip blip1 = (EscherBitmapBlip)bse1.getBlipRecord();
+        assertEquals(0x6E00, blip1.getOptions());
+        assertEquals(EscherBitmapBlip.RECORD_ID_PNG, blip1.getRecordId());
+        assertTrue(Arrays.equals(new byte[]{
+            0x65, 0x07, 0x4A, (byte)0x8D, 0x3E, 0x42, (byte)0x8B, (byte)0xAC,
+            0x1D, (byte)0x89, 0x35, 0x4F, 0x48, (byte)0xFA, 0x37, (byte)0xC2
+        }, blip1.getUID()));
+
+        //serialize and read again
+        byte[] ser = bse1.serialize();
+        EscherBSERecord bse2 = new EscherBSERecord();
+        bse2.fillFields(ser, 0, new DefaultEscherRecordFactory());
+        assertEquals(bse1.getRecordId(), bse2.getRecordId());
+        assertEquals(bse1.getBlipTypeWin32(), bse2.getBlipTypeWin32());
+        assertEquals(bse1.getBlipTypeMacOS(), bse2.getBlipTypeMacOS());
+        assertTrue(Arrays.equals(bse1.getUid(), bse2.getUid()));
+        assertEquals(bse1.getTag(), bse2.getTag());
+        assertEquals(bse1.getSize(), bse2.getSize());
+
+        EscherBitmapBlip blip2 = (EscherBitmapBlip)bse1.getBlipRecord();
+        assertEquals(blip1.getOptions(), blip2.getOptions());
+        assertEquals(blip1.getRecordId(), blip2.getRecordId());
+        assertEquals(blip1.getUID(), blip2.getUID());
+
+        assertTrue(Arrays.equals(blip1.getPicturedata(), blip1.getPicturedata()));
+    }
+
+    //test reading/serializing of a PICT metafile
+    public void testReadPICT() throws IOException {
+        //provided in bug-44886
+        byte[] data = read(new File(cwd, "Container.dat"));
+
+        EscherContainerRecord record = new EscherContainerRecord();
+        record.fillFields(data, 0, new DefaultEscherRecordFactory());
+        EscherContainerRecord bstore = (EscherContainerRecord)record.getChildRecords().get(1);
+        EscherBSERecord bse1 = (EscherBSERecord)bstore.getChildRecords().get(1);
+        //System.out.println(bse1);
+        assertEquals(EscherBSERecord.BT_WMF, bse1.getBlipTypeWin32());
+        assertEquals(EscherBSERecord.BT_PICT, bse1.getBlipTypeMacOS());
+        assertTrue(Arrays.equals(new byte[]{
+            (byte)0xC7, 0x15, 0x69, 0x2D, (byte)0xE5, (byte)0x89, (byte)0xA3, 0x6F,
+            0x66, 0x03, (byte)0xD6, 0x24, (byte)0xF7, (byte)0xDB, 0x1D, 0x13
+        }, bse1.getUid()));
+        assertEquals(255, bse1.getTag());
+        assertEquals(1133, bse1.getSize());
+
+        EscherMetafileBlip blip1 = (EscherMetafileBlip)bse1.getBlipRecord();
+        assertEquals(0x5430, blip1.getOptions());
+        assertEquals(EscherMetafileBlip.RECORD_ID_PICT, blip1.getRecordId());
+        assertTrue(Arrays.equals(new byte[]{
+            0x57, 0x32, 0x7B, (byte)0x91, 0x23, 0x5D, (byte)0xDB, 0x36,
+            0x7A, (byte)0xDB, (byte)0xFF, 0x17, (byte)0xFE, (byte)0xF3, (byte)0xA7, 0x05
+        }, blip1.getUID()));
+        assertTrue(Arrays.equals(new byte[]{
+            (byte)0xC7, 0x15, 0x69, 0x2D, (byte)0xE5, (byte)0x89, (byte)0xA3, 0x6F,
+            0x66, 0x03, (byte)0xD6, 0x24, (byte)0xF7, (byte)0xDB, 0x1D, 0x13
+        }, blip1.getPrimaryUID()));
+
+        //serialize and read again
+        byte[] ser = bse1.serialize();
+        EscherBSERecord bse2 = new EscherBSERecord();
+        bse2.fillFields(ser, 0, new DefaultEscherRecordFactory());
+        assertEquals(bse1.getRecordId(), bse2.getRecordId());
+        assertEquals(bse1.getOptions(), bse2.getOptions());
+        assertEquals(bse1.getBlipTypeWin32(), bse2.getBlipTypeWin32());
+        assertEquals(bse1.getBlipTypeMacOS(), bse2.getBlipTypeMacOS());
+        assertTrue(Arrays.equals(bse1.getUid(), bse2.getUid()));
+        assertEquals(bse1.getTag(), bse2.getTag());
+        assertEquals(bse1.getSize(), bse2.getSize());
+
+        EscherMetafileBlip blip2 = (EscherMetafileBlip)bse1.getBlipRecord();
+        assertEquals(blip1.getOptions(), blip2.getOptions());
+        assertEquals(blip1.getRecordId(), blip2.getRecordId());
+        assertEquals(blip1.getUID(), blip2.getUID());
+        assertEquals(blip1.getPrimaryUID(), blip2.getPrimaryUID());
+
+        assertTrue(Arrays.equals(blip1.getPicturedata(), blip1.getPicturedata()));
+    }
+
+    //integral test: check that the read-write-read round trip is consistent
+    public void testContainer() throws IOException {
+        byte[] data = read(new File(cwd, "Container.dat"));
+
+        EscherContainerRecord record = new EscherContainerRecord();
+        record.fillFields(data, 0, new DefaultEscherRecordFactory());
+
+        byte[] ser = record.serialize();
+        assertTrue(Arrays.equals(data, ser));
+    }
+
+    private byte[] read(File file) throws IOException {
+        byte[] data = new byte[(int)file.length()];
+        FileInputStream is = new FileInputStream(file);
+        is.read(data);
+        is.close();
+        return data;
+    }
+
+}