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ghidra/Ghidra/Features/BytePatterns/src/main/java/ghidra/bitpatterns/info/FileBitPatternInfoReader.java /
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| /* ### | |
| * 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.bitpatterns.info; | |
| import java.awt.Component; | |
| import java.beans.XMLDecoder; | |
| import java.io.*; | |
| import java.util.*; | |
| import org.apache.commons.io.FileUtils; | |
| import ghidra.program.model.address.AddressSetView; | |
| import ghidra.program.model.listing.*; | |
| import ghidra.util.Msg; | |
| import ghidra.util.task.*; | |
| /** | |
| * An object of this class stores information about function starts (and returns) to analyze. | |
| * | |
| * <p> There are two possible sources for this information. The first is a directory containing | |
| * XML files produced by JAXB from FunctionBitPatternInfo objects. The second is a single program. | |
| */ | |
| public class FileBitPatternInfoReader { | |
| private List<FunctionBitPatternInfo> fInfoList; //list of all function starts and returns to analyze | |
| private List<Long> startingAddresses; //list of all the starting addresses of the functions | |
| private ContextRegisterExtent registerExtent;//information about all context register values seen in all the xml files | |
| private int numFuncs = 0;//number of function seen in all the xml files | |
| private int numFiles = 0;//number of xml files in the directory | |
| private DataGatheringParams params; | |
| /** | |
| * Gathers function start information from a program. | |
| * | |
| * @param program The program to mine. | |
| * @param params The parameters controlling how much information to gather. | |
| * @param parent parent component | |
| */ | |
| public FileBitPatternInfoReader(Program program, DataGatheringParams params, Component parent) { | |
| startingAddresses = new ArrayList<Long>(); | |
| fInfoList = new ArrayList<FunctionBitPatternInfo>(); | |
| registerExtent = new ContextRegisterExtent(); | |
| this.params = params; | |
| numFiles = 1; | |
| MineProgramTask mineTask = new MineProgramTask(program); | |
| new TaskLauncher(mineTask, parent); | |
| } | |
| /** | |
| * Gathers function start information from a directory of XML-serialized {@link FunctionBitPatternInfo} | |
| * objects | |
| * @param xmlDir directory containing the xml files | |
| * @param monitor | |
| */ | |
| public FileBitPatternInfoReader(File xmlDir, Component parent) { | |
| if (!xmlDir.isDirectory()) { | |
| throw new IllegalArgumentException(xmlDir.getName() + " is not a directory"); | |
| } | |
| startingAddresses = new ArrayList<Long>(); | |
| fInfoList = new ArrayList<FunctionBitPatternInfo>(); | |
| registerExtent = new ContextRegisterExtent(); | |
| File[] dataFiles = xmlDir.listFiles(); | |
| ReadDirectoryTask readTask = new ReadDirectoryTask(dataFiles); | |
| new TaskLauncher(readTask, parent); | |
| } | |
| /** | |
| * Constructor used for testing | |
| * @param xmlDir | |
| */ | |
| FileBitPatternInfoReader(File xmlDir) { | |
| if (!xmlDir.isDirectory()) { | |
| throw new IllegalArgumentException(xmlDir.getName() + " is not a directory"); | |
| } | |
| startingAddresses = new ArrayList<Long>(); | |
| fInfoList = new ArrayList<FunctionBitPatternInfo>(); | |
| registerExtent = new ContextRegisterExtent(); | |
| params = null; | |
| Iterator<File> dataFiles = FileUtils.iterateFiles(xmlDir, null, false); | |
| while (dataFiles.hasNext()) { | |
| File dataFile = dataFiles.next(); | |
| processXmlFile(dataFile); | |
| } | |
| } | |
| private void processFBPIList(List<FunctionBitPatternInfo> fList) { | |
| for (FunctionBitPatternInfo fInfo : fList) { | |
| numFuncs++; | |
| fInfoList.add(fInfo); | |
| //record the starting address | |
| startingAddresses.add(Long.parseUnsignedLong(fInfo.getAddress(), 16)); | |
| //add the context register values to the context register extent | |
| registerExtent.addContextInfo(fInfo.getContextRegisters()); | |
| } | |
| } | |
| /** | |
| * Get the list of addresses of the functions | |
| * @return the addresses | |
| */ | |
| public List<Long> getStartingAddresses() { | |
| return startingAddresses; | |
| } | |
| /** | |
| * Get the total number of functions | |
| * @return number of functions | |
| */ | |
| public int getNumFuncs() { | |
| return numFuncs; | |
| } | |
| /** | |
| * Get the number of files examined | |
| * @return number of files | |
| */ | |
| public int getNumFiles() { | |
| return numFiles; | |
| } | |
| /** | |
| * Get the information gathered about context registers | |
| * @return context register information | |
| */ | |
| public ContextRegisterExtent getContextRegisterExtent() { | |
| return registerExtent; | |
| } | |
| /** | |
| * Get the list of {@link FunctionBitPatternInfo} objects, one object per function examined. | |
| * @return a list of the gathered information | |
| */ | |
| public List<FunctionBitPatternInfo> getFInfoList() { | |
| return fInfoList; | |
| } | |
| /** | |
| * Returns the list of starting addresses for functions which pass registerFilter | |
| * @param registerFilter - the context register filter | |
| * @return the list of functions passing the filter | |
| */ | |
| public List<Long> getFilteredAddresses(ContextRegisterFilter registerFilter) { | |
| List<Long> filteredAddresses = new ArrayList<Long>(); | |
| for (FunctionBitPatternInfo fInfo : fInfoList) { | |
| if (registerFilter.allows(fInfo.getContextRegisters())) { | |
| filteredAddresses.add(Long.parseUnsignedLong(fInfo.getAddress(), 16)); | |
| } | |
| } | |
| return filteredAddresses; | |
| } | |
| /** | |
| * Get the parameters used to gather this information | |
| * @return the data gathering paramaters | |
| */ | |
| public DataGatheringParams getDataGatheringParams() { | |
| return params; | |
| } | |
| private void processXmlFile(File dataFile) { | |
| if (!dataFile.getName().endsWith(".xml")) { | |
| Msg.info(this, "Skipping " + dataFile.getName()); | |
| return; | |
| } | |
| numFiles++; | |
| FileBitPatternInfo fileInfo = null; | |
| try (XMLDecoder xmlDecoder = new XMLDecoder(new FileInputStream(dataFile))) { | |
| fileInfo = (FileBitPatternInfo) xmlDecoder.readObject(); | |
| } | |
| catch (ArrayIndexOutOfBoundsException e) { | |
| // Probably wrong type of XML file...skip | |
| } | |
| catch (IOException e) { | |
| Msg.error(this, "IOException", e); | |
| } | |
| if (fileInfo == null) { | |
| Msg.info(this, "null FileBitPatternInfo for " + dataFile); | |
| return; | |
| } | |
| if (fileInfo.getFuncBitPatternInfo() == null) { | |
| Msg.info(this, "fList.getFuncBitPatternInfoList null for " + dataFile); | |
| return; | |
| } | |
| if (params == null) { | |
| //TODO: this will set the params to the params of the first valid file | |
| //these should agree with the parameters for all of the files | |
| //warn user if they don't? | |
| params = new DataGatheringParams(); | |
| params.setNumFirstBytes(fileInfo.getNumFirstBytes()); | |
| params.setNumPreBytes(fileInfo.getNumPreBytes()); | |
| params.setNumReturnBytes(fileInfo.getNumReturnBytes()); | |
| params.setNumFirstInstructions(fileInfo.getNumFirstInstructions()); | |
| params.setNumPreInstructions(fileInfo.getNumPreInstructions()); | |
| params.setNumReturnInstructions(fileInfo.getNumReturnInstructions()); | |
| } | |
| processFBPIList(fileInfo.getFuncBitPatternInfo()); | |
| } | |
| /** | |
| * Task for mining a single program | |
| */ | |
| class MineProgramTask extends Task { | |
| private AddressSetView initialized; | |
| private FunctionIterator fIter; | |
| private List<FunctionBitPatternInfo> fList; | |
| private Program program; | |
| /** | |
| * Creates a {@link Task} for mining function bit pattern information from a given program | |
| * @param program source program | |
| */ | |
| public MineProgramTask(Program program) { | |
| super("Mining Program", true, true, true); | |
| this.program = program; | |
| initialized = program.getMemory().getLoadedAndInitializedAddressSet(); | |
| fIter = program.getFunctionManager().getFunctions(true); | |
| fList = new ArrayList<>(); | |
| } | |
| @Override | |
| public void run(TaskMonitor monitor) { | |
| monitor.setMaximum(program.getFunctionManager().getFunctionCount()); | |
| while (fIter.hasNext() && !monitor.isCancelled()) { | |
| monitor.incrementProgress(1); | |
| Function func = fIter.next(); | |
| if (func.isThunk()) { | |
| continue; | |
| } | |
| if (func.isExternal()) { | |
| continue; | |
| } | |
| if (!initialized.contains(func.getEntryPoint())) { | |
| continue; | |
| } | |
| if (program.getListing().getInstructionAt(func.getEntryPoint()) == null) { | |
| continue; | |
| } | |
| FunctionBitPatternInfo fStart = new FunctionBitPatternInfo(program, func, params); | |
| if (fStart.getFirstBytes() != null) { | |
| fList.add(fStart); | |
| } | |
| } | |
| processFBPIList(fList); | |
| } | |
| } | |
| /** | |
| * {@link Task} for processing an array of XML-serialized FileBitPatternInfo objects | |
| */ | |
| class ReadDirectoryTask extends Task { | |
| private File[] dataFiles; | |
| /** | |
| * Creates a Task for restoring an array of XML-serialized FileBitPatternInfo objects | |
| * @param dataFiles array file files | |
| * @param unmarshaller Unmarshaller for serialized xml | |
| */ | |
| public ReadDirectoryTask(File[] dataFiles) { | |
| super("Reading XML", true, true, true); | |
| this.dataFiles = dataFiles; | |
| } | |
| @Override | |
| public void run(TaskMonitor monitor) { | |
| monitor.setMaximum(dataFiles.length); | |
| params = null; | |
| for (File dataFile : dataFiles) { | |
| monitor.incrementProgress(1); | |
| processXmlFile(dataFile); | |
| } | |
| } | |
| } | |
| } |