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GP-6713 check length calc

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dev747368
2026-04-20 17:07:55 +00:00
parent 5a209ba931
commit 0e1484a20c
2 changed files with 14 additions and 8 deletions
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5
GPL/DMG/src/dmg/java/mobiledevices/dmg/btree/BTreeRootNodeDescriptor.java
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@@ -25,7 +25,10 @@ public class BTreeRootNodeDescriptor extends BTreeNodeDescriptor {
nodes.add( this ); nodes.add( this );
int nodeSize = headerRecord.getNodeSize() & 0xffff; int nodeSize = Short.toUnsignedInt(headerRecord.getNodeSize());
if (nodeSize == 0) {
throw new IOException("Bad nodeSize: " + nodeSize);
}
for ( int i = nodeSize ; i < reader.length() ; i += nodeSize ) { for ( int i = nodeSize ; i < reader.length() ; i += nodeSize ) {
reader.setPointerIndex( i ); reader.setPointerIndex( i );

13
Ghidra/Features/FileFormats/src/main/java/ghidra/file/formats/ios/btree/BTreeRootNodeDescriptor.java
View File

@@ -15,15 +15,15 @@
*/ */
package ghidra.file.formats.ios.btree; package ghidra.file.formats.ios.btree;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import ghidra.app.util.bin.BinaryReader; import ghidra.app.util.bin.BinaryReader;
import ghidra.app.util.bin.StructConverterUtil; import ghidra.app.util.bin.StructConverterUtil;
import ghidra.program.model.data.DataType; import ghidra.program.model.data.DataType;
import ghidra.util.exception.DuplicateNameException; import ghidra.util.exception.DuplicateNameException;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
public class BTreeRootNodeDescriptor extends BTreeNodeDescriptor { public class BTreeRootNodeDescriptor extends BTreeNodeDescriptor {
private BTreeHeaderRecord headerRecord; private BTreeHeaderRecord headerRecord;
@@ -40,7 +40,10 @@ public class BTreeRootNodeDescriptor extends BTreeNodeDescriptor {
nodes.add( this ); nodes.add( this );
int nodeSize = headerRecord.getNodeSize() & 0xffff; int nodeSize = Short.toUnsignedInt(headerRecord.getNodeSize());
if (nodeSize == 0) {
throw new IOException("Bad nodeSize: " + nodeSize);
}
for ( int i = nodeSize ; i < reader.length() ; i += nodeSize ) { for ( int i = nodeSize ; i < reader.length() ; i += nodeSize ) {
reader.setPointerIndex( i ); reader.setPointerIndex( i );