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detect "Non-standard LZMA compressed Flash" (signature=ABC) files in DefineBinaryData tag

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This commit is contained in:
honfika@gmail.com
2015-07-01 12:21:52 +02:00
parent e56d454090
commit 4eb9e54e51
2 changed files with 11 additions and 16 deletions
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18
libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/SWF.java
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@@ -300,6 +300,15 @@ public final class SWF implements SWFContainerItem, Timelined {
@Internal
private final Cache<ScriptPack, CachedDecompilation> as3Cache = Cache.getInstance(true, false, "as3");
public static List<String> swfSignatures = Arrays.asList(
"FWS", // Uncompressed Flash
"CWS", // ZLib compressed Flash
"ZWS", // LZMA compressed Flash
"GFX", // Uncompressed ScaleForm GFx
"CFX", // Compressed ScaleForm GFx
"ABC" // Non-standard LZMA compressed Flash
);
public void updateCharacters() {
characters = null;
}
@@ -1149,14 +1158,7 @@ public final class SWF implements SWFContainerItem, Timelined {
}
String signature = new String(hdr, 0, 3, Utf8Helper.charset);
if (!Arrays.asList(
"FWS", // Uncompressed Flash
"CWS", // ZLib compressed Flash
"ZWS", // LZMA compressed Flash
"GFX", // Uncompressed ScaleForm GFx
"CFX", // Compressed ScaleForm GFx
"ABC" // Non-standard LZMA compressed Flash
).contains(signature)) {
if (!swfSignatures.contains(signature)) {
throw new SwfOpenException("Invalid SWF file, wrong signature.");
}

9
libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/tags/DefineBinaryDataTag.java
View File

@@ -30,7 +30,6 @@ import com.jpexs.helpers.utf8.Utf8Helper;
import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.Arrays;
/**
*
@@ -115,13 +114,7 @@ public class DefineBinaryDataTag extends CharacterTag {
try {
if (binaryData.getLength() > 8) {
String signature = new String(binaryData.getRangeData(0, 3), Utf8Helper.charset);
if (Arrays.asList(
"FWS", //Uncompressed Flash
"CWS", //ZLib compressed Flash
"ZWS", //LZMA compressed Flash
"GFX", //Uncompressed ScaleForm GFx
"CFX" //Compressed ScaleForm GFx
).contains(signature)) {
if (SWF.swfSignatures.contains(signature)) {
return true;
}
}