LegacyConsole/jpexs-decompiler
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faster AS2 deobfuscation (ActionDeobfuscatorSimple and ActionDeobfuscator combined to a single linked list based algorithm), caching deobfuscated action list

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This commit is contained in:
honfika@gmail.com
2015-10-20 09:13:50 +02:00
parent d5fee60f26
commit f699fd72bb
18 changed files with 420 additions and 185 deletions
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47
libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/SWF.java
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@@ -30,6 +30,7 @@ import com.jpexs.decompiler.flash.abc.types.ScriptInfo;
import com.jpexs.decompiler.flash.action.Action;
import com.jpexs.decompiler.flash.action.ActionGraphSource;
import com.jpexs.decompiler.flash.action.ActionList;
import com.jpexs.decompiler.flash.action.ActionListReader;
import com.jpexs.decompiler.flash.action.ActionLocalData;
import com.jpexs.decompiler.flash.action.CachedScript;
import com.jpexs.decompiler.flash.action.model.ConstantPool;
@@ -132,6 +133,7 @@ import com.jpexs.decompiler.graph.GraphSourceItemContainer;
import com.jpexs.decompiler.graph.GraphTargetItem;
import com.jpexs.decompiler.graph.TranslateStack;
import com.jpexs.decompiler.graph.model.LocalData;
import com.jpexs.helpers.ByteArrayRange;
import com.jpexs.helpers.Cache;
import com.jpexs.helpers.Helper;
import com.jpexs.helpers.NulStream;
@@ -306,6 +308,9 @@ public final class SWF implements SWFContainerItem, Timelined {
@Internal
private final Cache<SoundTag, byte[]> soundCache = Cache.getInstance(false, false, "sound");
@Internal
private final Cache<ASMSource, ActionList> as2PcodeCache = Cache.getInstance(true, true, "as2pcode");
@Internal
private final Cache<ASMSource, CachedScript> as2Cache = Cache.getInstance(true, false, "as2");
@@ -358,6 +363,7 @@ public final class SWF implements SWFContainerItem, Timelined {
swfList.swfs.clear();
}
as2PcodeCache.clear();
as2Cache.clear();
as3Cache.clear();
frameCache.clear();
@@ -2265,6 +2271,7 @@ public final class SWF implements SWFContainerItem, Timelined {
}
public void clearScriptCache() {
as2PcodeCache.clear();
as2Cache.clear();
as3Cache.clear();
IdentifiersDeobfuscation.clearCache();
@@ -2283,7 +2290,9 @@ public final class SWF implements SWFContainerItem, Timelined {
public static void uncache(ASMSource src) {
if (src != null) {
src.getSwf().as2Cache.remove(src);
SWF swf = src.getSwf();
swf.as2Cache.remove(src);
swf.as2PcodeCache.remove(src);
}
}
@@ -2301,6 +2310,42 @@ public final class SWF implements SWFContainerItem, Timelined {
return pack.getSwf().as3Cache.contains(pack);
}
public static ActionList getCachedActionList(ASMSource src, final List<DisassemblyListener> listeners) throws InterruptedException {
synchronized (src) {
SWF swf = src.getSwf();
int deobfuscationMode = Configuration.autoDeobfuscate.get() ? (Configuration.deobfuscationOldMode.get() ? 0 : 1) : -1;
if (swf != null && swf.as2PcodeCache.contains(src)) {
ActionList result = swf.as2PcodeCache.get(src);
if (result.deobfuscationMode == deobfuscationMode) {
return result;
}
}
try {
ByteArrayRange actionBytes = src.getActionBytes();
int prevLength = actionBytes.getPos();
SWFInputStream rri = new SWFInputStream(swf, actionBytes.getArray());
if (prevLength != 0) {
rri.seek(prevLength);
}
int version = swf == null ? SWF.DEFAULT_VERSION : swf.version;
ActionList list = ActionListReader.readActionListTimeout(listeners, rri, version, prevLength, prevLength + actionBytes.getLength(), src.toString()/*FIXME?*/, deobfuscationMode);
list.deobfuscationMode = deobfuscationMode;
if (swf != null) {
swf.as2PcodeCache.put(src, list);
}
return list;
} catch (InterruptedException ex) {
throw ex;
} catch (Exception ex) {
Logger.getLogger(SWF.class.getName()).log(Level.SEVERE, null, ex);
return new ActionList();
}
}
}
public static CachedScript getCached(ASMSource src, ActionList actions) throws InterruptedException {
SWF swf = src.getSwf();
if (swf.as2Cache.contains(src)) {