/* ### * IP: GHIDRA * * Licensed 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 ghidra.app.util.bin.format.macho.commands; import java.io.IOException; import ghidra.app.util.bin.format.FactoryBundledWithBinaryReader; import ghidra.app.util.bin.format.macho.MachConstants; import ghidra.app.util.bin.format.macho.MachHeader; import ghidra.app.util.importer.MessageLog; import ghidra.program.flatapi.FlatProgramAPI; import ghidra.program.model.address.Address; import ghidra.program.model.data.*; import ghidra.program.model.listing.ProgramModule; import ghidra.util.exception.DuplicateNameException; import ghidra.util.task.TaskMonitor; /** * Represents a prebind_cksum_command structure. * * @see <a href="https://opensource.apple.com/source/xnu/xnu-4570.71.2/EXTERNAL_HEADERS/mach-o/loader.h.auto.html">mach-o/loader.h</a> */ public class PrebindChecksumCommand extends LoadCommand { private int cksum; static PrebindChecksumCommand createPrebindChecksumCommand( FactoryBundledWithBinaryReader reader) throws IOException { PrebindChecksumCommand checksumCommand = (PrebindChecksumCommand) reader.getFactory().create(PrebindChecksumCommand.class); checksumCommand.initPrebindChecksumCommand(reader); return checksumCommand; } /** * DO NOT USE THIS CONSTRUCTOR, USE create*(GenericFactory ...) FACTORY METHODS INSTEAD. */ public PrebindChecksumCommand() { } private void initPrebindChecksumCommand(FactoryBundledWithBinaryReader reader) throws IOException { initLoadCommand(reader); cksum = reader.readNextInt(); } /** * Returns the check sum or zero. * @return the check sum or zero */ public int getCheckSum() { return cksum; } @Override public DataType toDataType() throws DuplicateNameException, IOException { StructureDataType struct = new StructureDataType(getCommandName(), 0); struct.add(DWORD, "cmd", null); struct.add(DWORD, "cmdsize", null); struct.add(DWORD, "cksum", null); struct.setCategoryPath(new CategoryPath(MachConstants.DATA_TYPE_CATEGORY)); return struct; } @Override public String getCommandName() { return "prebind_cksum_command"; } @Override public void markup(MachHeader header, FlatProgramAPI api, Address baseAddress, boolean isBinary, ProgramModule parentModule, TaskMonitor monitor, MessageLog log) { updateMonitor(monitor); try { if (isBinary) { createFragment(api, baseAddress, parentModule); Address addr = baseAddress.getNewAddress(getStartIndex()); api.createData(addr, toDataType()); } } catch (Exception e) { log.appendMsg("Unable to create " + getCommandName() + " - " + e.getMessage()); } } }