TestStreamComplex.java
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package org.apache.poi.hdgf.streams;
import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.junit.jupiter.api.Assertions.assertFalse;
import static org.junit.jupiter.api.Assertions.assertNotNull;
import static org.junit.jupiter.api.Assertions.assertNull;
import static org.junit.jupiter.api.Assertions.assertTrue;
import java.io.IOException;
import java.io.InputStream;
import org.apache.poi.POIDataSamples;
import org.apache.poi.hdgf.chunks.Chunk;
import org.apache.poi.hdgf.chunks.ChunkFactory;
import org.apache.poi.hdgf.pointers.Pointer;
import org.apache.poi.hdgf.pointers.PointerFactory;
import org.apache.poi.poifs.filesystem.POIFSFileSystem;
import org.apache.poi.util.IOUtils;
import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.Test;
public final class TestStreamComplex extends StreamTest {
private byte[] contents;
private final int trailerPointerAt = 0x24;
private final int trailerDataAt = 0x8a94;
private ChunkFactory chunkFactory;
private PointerFactory ptrFactory;
@BeforeEach
void setUp() throws IOException {
ptrFactory = new PointerFactory(11);
chunkFactory = new ChunkFactory(11);
InputStream is = POIDataSamples.getDiagramInstance().openResourceAsStream("Test_Visio-Some_Random_Text.vsd");
POIFSFileSystem filesystem = new POIFSFileSystem(is);
is.close();
// Grab the document stream
InputStream is2 = filesystem.createDocumentInputStream("VisioDocument");
contents = IOUtils.toByteArray(is2);
is2.close();
filesystem.close();
}
/**
* Test creating the trailer, but not looking for children
*/
@Test
void testTrailer() {
// Find the trailer
Pointer trailerPtr = ptrFactory.createPointer(contents, trailerPointerAt);
assertEquals(20, trailerPtr.getType());
assertEquals(trailerDataAt, trailerPtr.getOffset());
Stream stream = Stream.createStream(trailerPtr, contents, chunkFactory, ptrFactory);
assertTrue(stream instanceof TrailerStream);
TrailerStream ts = (TrailerStream)stream;
assertNotNull(ts.getChildPointers());
assertNull(ts.getPointedToStreams());
assertEquals(20, ts.getChildPointers().length);
assertEquals(0x16, ts.getChildPointers()[0].getType());
assertEquals(0x17, ts.getChildPointers()[1].getType());
assertEquals(0x17, ts.getChildPointers()[2].getType());
assertEquals(0xff, ts.getChildPointers()[3].getType());
}
@Test
void testChunks() {
Pointer trailerPtr = ptrFactory.createPointer(contents, trailerPointerAt);
TrailerStream ts = (TrailerStream)
Stream.createStream(trailerPtr, contents, chunkFactory, ptrFactory);
// Should be 7th one
Pointer chunkPtr = ts.getChildPointers()[5];
assertFalse(chunkPtr.destinationHasStrings());
assertTrue(chunkPtr.destinationHasChunks());
assertFalse(chunkPtr.destinationHasPointers());
Stream stream = Stream.createStream(chunkPtr, contents, chunkFactory, ptrFactory);
assertNotNull(stream);
assertTrue(stream instanceof ChunkStream);
// Now find the chunks within it
ChunkStream cs = (ChunkStream)stream;
cs.findChunks();
}
@Test
void testStrings() {
Pointer trailerPtr = ptrFactory.createPointer(contents, trailerPointerAt);
TrailerStream ts = (TrailerStream)
Stream.createStream(trailerPtr, contents, chunkFactory, ptrFactory);
// Should be the 1st one
Pointer stringPtr = ts.getChildPointers()[0];
assertTrue(stringPtr.destinationHasStrings());
assertFalse(stringPtr.destinationHasChunks());
assertFalse(stringPtr.destinationHasPointers());
Stream stream = Stream.createStream(stringPtr, contents, chunkFactory, ptrFactory);
assertNotNull(stream);
assertTrue(stream instanceof StringsStream);
}
@Test
void testPointerToStrings() {
// The stream at 0x347f has strings
// The stream at 0x4312 has a pointer to 0x347f
// The stream at 0x44d3 has a pointer to 0x4312
// (it's the 2nd one of 3, and the block is compressed)
TestPointer ptr44d3 = new TestPointer(true, 0x44d3, 0x51, 0x4e, (short)0x56);
ptr44d3.hasPointers = true;
PointerContainingStream s44d3 = (PointerContainingStream)
Stream.createStream(ptr44d3, contents, chunkFactory, ptrFactory);
// Type: 0d Addr: 014ff644 Offset: 4312 Len: 48 Format: 54 From: 44d3
Pointer ptr4312 = s44d3.getChildPointers()[1];
assertEquals(0x0d, ptr4312.getType());
assertEquals(0x4312, ptr4312.getOffset());
assertEquals(0x48, ptr4312.getLength());
assertEquals(0x54, ptr4312.getFormat());
assertTrue(ptr4312.destinationHasPointers());
assertFalse(ptr4312.destinationHasStrings());
PointerContainingStream s4312 = (PointerContainingStream)
Stream.createStream(ptr4312, contents, chunkFactory, ptrFactory);
// Check it has 0x347f
// Type: 1f Addr: 01540004 Offset: 347f Len: 8e8 Format: 46 From: 4312
assertEquals(2, s4312.getChildPointers().length);
Pointer ptr347f = s4312.getChildPointers()[0];
assertEquals(0x1f, ptr347f.getType());
assertEquals(0x347f, ptr347f.getOffset());
assertEquals(0x8e8, ptr347f.getLength());
assertEquals(0x46, ptr347f.getFormat());
assertFalse(ptr347f.destinationHasPointers());
assertTrue(ptr347f.destinationHasStrings());
// Find the children of 0x4312
assertNull(s4312.getPointedToStreams());
s4312.findChildren(contents);
// Should have two, both strings
assertNotNull(s4312.getPointedToStreams());
assertEquals(2, s4312.getPointedToStreams().length);
assertTrue(s4312.getPointedToStreams()[0] instanceof StringsStream);
assertTrue(s4312.getPointedToStreams()[1] instanceof StringsStream);
}
@Test
void testTrailerContents() {
Pointer trailerPtr = ptrFactory.createPointer(contents, trailerPointerAt);
TrailerStream ts = (TrailerStream)
Stream.createStream(trailerPtr, contents, chunkFactory, ptrFactory);
assertNotNull(ts.getChildPointers());
assertNull(ts.getPointedToStreams());
assertEquals(20, ts.getChildPointers().length);
ts.findChildren(contents);
assertNotNull(ts.getChildPointers());
assertNotNull(ts.getPointedToStreams());
assertEquals(20, ts.getChildPointers().length);
assertEquals(20, ts.getPointedToStreams().length);
// Step down:
// 8 -> 4 -> 5 -> 1 -> 0 == String
assertNotNull(ts.getPointedToStreams()[8]);
assertTrue(ts.getPointedToStreams()[8] instanceof PointerContainingStream);
PointerContainingStream s8 =
(PointerContainingStream)ts.getPointedToStreams()[8];
assertNotNull(s8.getPointedToStreams());
assertNotNull(s8.getPointedToStreams()[4]);
assertTrue(s8.getPointedToStreams()[4] instanceof PointerContainingStream);
PointerContainingStream s84 =
(PointerContainingStream)s8.getPointedToStreams()[4];
assertNotNull(s84.getPointedToStreams());
assertNotNull(s84.getPointedToStreams()[5]);
assertTrue(s84.getPointedToStreams()[5] instanceof PointerContainingStream);
PointerContainingStream s845 =
(PointerContainingStream)s84.getPointedToStreams()[5];
assertNotNull(s845.getPointedToStreams());
assertNotNull(s845.getPointedToStreams()[1]);
assertTrue(s845.getPointedToStreams()[1] instanceof PointerContainingStream);
PointerContainingStream s8451 =
(PointerContainingStream)s845.getPointedToStreams()[1];
assertNotNull(s8451.getPointedToStreams());
assertNotNull(s8451.getPointedToStreams()[0]);
assertTrue(s8451.getPointedToStreams()[0] instanceof StringsStream);
assertTrue(s8451.getPointedToStreams()[1] instanceof StringsStream);
}
@Test
void testChunkWithText() {
// Parent ChunkStream is at 0x7194
// This is one of the last children of the trailer
Pointer trailerPtr = ptrFactory.createPointer(contents, trailerPointerAt);
TrailerStream ts = (TrailerStream)
Stream.createStream(trailerPtr, contents, chunkFactory, ptrFactory);
ts.findChildren(contents);
assertNotNull(ts.getChildPointers());
assertNotNull(ts.getPointedToStreams());
assertEquals(20, ts.getChildPointers().length);
assertEquals(20, ts.getPointedToStreams().length);
assertEquals(0x7194, ts.getChildPointers()[13].getOffset());
assertEquals(0x7194, ts.getPointedToStreams()[13].getPointer().getOffset());
PointerContainingStream ps7194 = (PointerContainingStream)
ts.getPointedToStreams()[13];
// First child is at 0x64b3
assertEquals(0x64b3, ps7194.getChildPointers()[0].getOffset());
assertEquals(0x64b3, ps7194.getPointedToStreams()[0].getPointer().getOffset());
ChunkStream cs = (ChunkStream)ps7194.getPointedToStreams()[0];
// Should be 26bc bytes un-compressed
assertEquals(0x26bc, cs.getStore().getContents().length);
// And should have lots of children
assertEquals(131, cs.getChunks().length);
// One of which is Text
boolean hasText = false;
for(int i = 0; !hasText && i < cs.getChunks().length; i++) {
if (cs.getChunks()[i].getName().equals("Text")) {
hasText = true;
}
}
assertTrue(hasText);
// Which is the 72nd command
assertEquals("Text", cs.getChunks()[72].getName());
Chunk text = cs.getChunks()[72];
assertEquals("Text", text.getName());
// Which contains our text
assertEquals(1, text.getCommands().length);
assertEquals("Test View\n", text.getCommands()[0].getValue());
// Almost at the end is some more text
assertEquals("Text", cs.getChunks()[128].getName());
text = cs.getChunks()[128];
assertEquals("Text", text.getName());
assertEquals(1, text.getCommands().length);
assertEquals("Some random text, on a page\n", text.getCommands()[0].getValue());
}
}