mirror of
https://github.com/zaaarf/lillero-processor.git
synced 2024-11-14 05:49:19 +01:00
chore: moved obfuscation stuff to mapping library
This commit is contained in:
parent
d528d472a1
commit
ed70355a86
7 changed files with 16 additions and 265 deletions
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@ -21,7 +21,8 @@ repositories {
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dependencies {
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implementation 'com.squareup:javapoet:1.13.0'
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implementation 'org.ow2.asm:asm-commons:9.5'
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implementation 'ftbsc:lll:0.4.1'
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implementation 'ftbsc:lll:0.4.2'
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implementation 'ftbsc.lll:mapper:0.0.2'
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}
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jar {
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@ -1,27 +0,0 @@
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package ftbsc.lll.exceptions;
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import ftbsc.lll.processor.tools.obfuscation.ObfuscationMapper;
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/**
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* Thrown upon failure to find the requested mapping within a loaded {@link ObfuscationMapper}.
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*/
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public class MappingNotFoundException extends RuntimeException {
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/**
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* Constructs a new mapping not found exception for the specified mapping.
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* @param mapping the relevant mapping
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*/
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public MappingNotFoundException(String mapping) {
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super(String.format("Could not find mapping for %s!", mapping));
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}
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/**
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* Constructs a new mapping not found exception for the specified mapping
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* with the specified reason.
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* @param mapping the relevant mapping
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* @param reason the reason message
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*/
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public MappingNotFoundException(String mapping, String reason) {
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this(mapping + ": " + reason);
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}
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}
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@ -6,7 +6,7 @@ import ftbsc.lll.exceptions.NotAProxyException;
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import ftbsc.lll.exceptions.TargetNotFoundException;
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import ftbsc.lll.processor.annotations.Target;
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import ftbsc.lll.processor.tools.containers.ClassContainer;
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import ftbsc.lll.processor.tools.obfuscation.ObfuscationMapper;
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import ftbsc.lll.mapper.IMapper;
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import ftbsc.lll.proxies.ProxyType;
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import javax.annotation.processing.ProcessingEnvironment;
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@ -229,11 +229,11 @@ public class ASTUtils {
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* @param parentFQN the unobfuscated FQN of the parent class
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* @param memberName the name of the member
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* @param methodDescriptor the descriptor of the method, may be null
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* @param mapper the {@link ObfuscationMapper} to use, may be null
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* @param mapper the {@link IMapper} to use, may be null
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* @return the internal class name
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* @since 0.3.0
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*/
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public static String findMemberName(String parentFQN, String memberName, String methodDescriptor, ObfuscationMapper mapper) {
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public static String findMemberName(String parentFQN, String memberName, String methodDescriptor, IMapper mapper) {
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try {
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return mapper == null ? memberName : mapper.obfuscateMember(parentFQN, memberName, methodDescriptor);
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} catch(MappingNotFoundException e) {
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@ -2,7 +2,7 @@ package ftbsc.lll.processor.tools;
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import ftbsc.lll.IInjector;
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import ftbsc.lll.exceptions.InvalidResourceException;
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import ftbsc.lll.processor.tools.obfuscation.ObfuscationMapper;
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import ftbsc.lll.mapper.IMapper;
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import javax.annotation.processing.ProcessingEnvironment;
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import java.io.*;
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@ -12,6 +12,7 @@ import java.nio.charset.StandardCharsets;
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import java.util.Arrays;
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import java.util.HashSet;
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import java.util.Set;
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import java.util.stream.Collectors;
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/**
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* Class in charge of containing, parsing and processing all processor options,
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@ -33,10 +34,10 @@ public class ProcessorOptions {
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public final ProcessingEnvironment env;
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/**
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* The {@link ObfuscationMapper} used to convert classes and variables
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* The {@link IMapper} used to convert classes and variables
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* to their obfuscated equivalent. Will be null when no mapper is in use.
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*/
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public final ObfuscationMapper mapper;
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public final IMapper mapper;
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/**
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* Whether the processor should issue warnings when compiling code anonymous
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@ -80,10 +81,9 @@ public class ProcessorOptions {
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throw new InvalidResourceException(location);
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}
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}
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//assuming its tsrg file
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//todo: replace crappy homebaked parser with actual library
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this.mapper = new ObfuscationMapper(new BufferedReader(new InputStreamReader(targetStream,
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StandardCharsets.UTF_8)).lines());
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this.mapper = IMapper.getMappers(new BufferedReader(
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new InputStreamReader(targetStream, StandardCharsets.UTF_8)).lines().collect(Collectors.toList())
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).iterator().next(); //TODO: add logic for choosing a specific one
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}
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this.anonymousClassWarning = parseBooleanArg(env.getOptions().get("anonymousClassWarning"), true);
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this.obfuscateInjectorMetadata = parseBooleanArg(env.getOptions().get("obfuscateInjectorMetadata"), true);
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@ -1,6 +1,7 @@
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package ftbsc.lll.processor.tools.containers;
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import ftbsc.lll.exceptions.AmbiguousDefinitionException;
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import ftbsc.lll.mapper.tools.MappingUtils;
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import ftbsc.lll.processor.annotations.Find;
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import ftbsc.lll.processor.annotations.Patch;
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import ftbsc.lll.processor.tools.ProcessorOptions;
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@ -73,7 +74,7 @@ public class FieldContainer {
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this.name = this.elem.getSimpleName().toString();
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this.descriptor = descriptorFromType(this.elem.asType(), options.env);
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}
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this.descriptorObf = options.mapper == null ? this.descriptor : options.mapper.obfuscateType(Type.getType(this.descriptor)).getDescriptor();
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this.descriptorObf = options.mapper == null ? this.descriptor : MappingUtils.obfuscateType(Type.getType(this.descriptor), options.mapper).getDescriptor();
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this.nameObf = findMemberName(parent.fqn, this.name, null, options.mapper);
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}
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@ -2,6 +2,7 @@ package ftbsc.lll.processor.tools.containers;
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import ftbsc.lll.exceptions.AmbiguousDefinitionException;
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import ftbsc.lll.exceptions.TargetNotFoundException;
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import ftbsc.lll.mapper.tools.MappingUtils;
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import ftbsc.lll.processor.annotations.Find;
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import ftbsc.lll.processor.annotations.Patch;
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import ftbsc.lll.processor.annotations.Target;
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@ -78,7 +79,7 @@ public class MethodContainer {
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this.name = this.elem.getSimpleName().toString();
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this.descriptor = descriptorFromExecutableElement(this.elem, options.env);
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}
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this.descriptorObf = options.mapper == null ? this.descriptor : options.mapper.obfuscateMethodDescriptor(this.descriptor);
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this.descriptorObf = options.mapper == null ? this.descriptor : MappingUtils.obfuscateMethodDescriptor(this.descriptor, options.mapper);
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this.nameObf = findMemberName(parent.fqn, this.name, this.descriptor, options.mapper);
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}
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@ -1,225 +0,0 @@
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package ftbsc.lll.processor.tools.obfuscation;
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import ftbsc.lll.exceptions.AmbiguousDefinitionException;
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import ftbsc.lll.exceptions.MappingNotFoundException;
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import ftbsc.lll.tools.DescriptorBuilder;
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import org.objectweb.asm.Type;
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import java.util.HashMap;
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import java.util.List;
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import java.util.Map;
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import java.util.concurrent.atomic.AtomicReference;
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import java.util.stream.Collectors;
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import java.util.stream.Stream;
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/**
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* Parses a .tsrg file into a mapper capable of converting from
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* deobfuscated names to obfuscated ones.
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* Obviously, it may only be used at runtime if the .tsrg file is
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* included in the resources. However, in that case, I'd recommend
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* using the built-in Forge one and refrain from including an extra
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* resource for no good reason.
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* TODO: CSV format
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* @since 0.2.0
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*/
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public class ObfuscationMapper {
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/**
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* A Map using the deobfuscated names as keys,
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* holding information for that class as value.
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*/
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private final Map<String, ObfuscationData> mapper = new HashMap<>();
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/**
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* The public constructor.
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* Should be passed a {@link Stream} of Strings, one representing each line.
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* Whether they contain line endings or not is irrelevant.
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* @param str a {@link Stream} of strings
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*/
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public ObfuscationMapper(Stream<String> str) {
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AtomicReference<String> currentClass = new AtomicReference<>("");
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str.forEach(l -> {
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if(l == null) return;
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if(l.startsWith("\t"))
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mapper.get(currentClass.get()).addMember(l);
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else {
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String[] sp = l.split(" ");
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ObfuscationData s = new ObfuscationData(sp[0], sp[1]);
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currentClass.set(s.unobf);
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mapper.put(s.unobf, s);
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}
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});
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}
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/**
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* Gets the obfuscated name of the class.
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* @param name the unobfuscated internal name of the desired class
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* @return the obfuscated name of the class
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* @throws MappingNotFoundException if no mapping is found
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*/
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public String obfuscateClass(String name) {
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ObfuscationData data = mapper.get(name.replace('.', '/'));
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if(data == null)
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throw new MappingNotFoundException(name);
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else return data.obf;
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}
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/**
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* Gets the obfuscated name of a class member (field or method).
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* The method signature must be in this format: "methodName methodDescriptor",
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* with a space, because that's how it is in .tsrg files.
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* @param parentName the unobfuscated internal name of the parent class
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* @param memberName the field name or method signature
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* @param methodDescriptor the optional descriptor of the member, may be null or partial
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* @return the obfuscated name of the given member
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* @throws MappingNotFoundException if no mapping is found
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*/
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public String obfuscateMember(String parentName, String memberName, String methodDescriptor) {
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ObfuscationData data = mapper.get(parentName.replace('.', '/'));
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if(data == null)
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throw new MappingNotFoundException(parentName + "::" + memberName);
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return data.get(memberName, methodDescriptor);
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}
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/**
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* Obfuscates a method descriptor, replacing its class references
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* with their obfuscated counterparts.
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* @param descriptor a {@link String} containing the descriptor
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* @return the obfuscated descriptor
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* @since 0.5.1
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*/
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public String obfuscateMethodDescriptor(String descriptor) {
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Type method = Type.getMethodType(descriptor);
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Type[] arguments = method.getArgumentTypes();
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Type returnType = method.getReturnType();
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Type[] obfArguments = new Type[arguments.length];
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for(int i = 0; i < obfArguments.length; i++)
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obfArguments[i] = this.obfuscateType(arguments[i]);
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return Type.getMethodDescriptor(this.obfuscateType(returnType), obfArguments);
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}
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/**
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* Given a {@link Type} it returns its obfuscated counterpart.
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* @param type the type in question
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* @return the obfuscated type
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* @since 0.5.1
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*/
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public Type obfuscateType(Type type) {
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//unwrap arrays
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Type unwrapped = type;
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int arrayLevel = 0;
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while(unwrapped.getSort() == org.objectweb.asm.Type.ARRAY) {
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unwrapped = unwrapped.getElementType();
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arrayLevel++;
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}
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//if it's a primitive no operation is needed
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if(type.getSort() < org.objectweb.asm.Type.ARRAY)
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return type;
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String internalName = type.getInternalName();
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String internalNameObf;
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try {
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internalNameObf = this.obfuscateClass(internalName);
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return Type.getType(DescriptorBuilder.nameToDescriptor(internalNameObf, arrayLevel));
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} catch(MappingNotFoundException e) {
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return type;
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}
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}
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/**
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* Private class used internally for storing information about each
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* class. It's private because there is no good reason anyone would
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* want to access this outside of this class.
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*/
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private static class ObfuscationData {
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/**
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* The unobfuscated name (FQN with '/' instad of '.') of the class.
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*/
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private final String unobf;
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/**
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* The obfuscated internal name (FQN with '/' instad of '.') of the class.
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*/
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private final String obf;
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/**
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* A {@link Map} tying each member's name or signature to its
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* obfuscated counterpart.
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*/
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private final Map<String, String> members;
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/**
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* The constructor. It takes in the names (obfuscated and non-obfuscated)
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* of a class.
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* @param unobf the unobfuscated name
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* @param obf the obfuscated name
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*/
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private ObfuscationData(String unobf, String obf) {
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this.unobf = unobf;
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this.obf = obf;
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this.members = new HashMap<>();
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}
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/**
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* Adds a member to the target class.
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* For fields only the names are required; for methods,
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* this takes in the full signature ({@code name + " " + space}).
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* @param s the String representing the declaration line
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*/
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public void addMember(String s) {
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String[] split = s.trim().split(" ");
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if(split.length == 2) //field
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members.put(split[0], split[1]);
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else if (split.length == 3) //method
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members.put(split[0] + " " + split[1], split[2]);
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}
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/**
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* Gets an obfuscated member given the method name and a method descriptor,
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* which may be partial (i.e. not include return type) or null if the member
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* is not a method.
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* @param memberName member name
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* @param methodDescriptor the method descriptor, or null if it's not a method
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* @return the requested obfuscated name, or null if nothing was found
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* @throws AmbiguousDefinitionException if not enough data was given to uniquely identify a mapping
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*/
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public String get(String memberName, String methodDescriptor) {
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//find all keys that start with the name
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List<String> candidates = members.keySet().stream().filter(
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m -> m.split(" ")[0].equals(memberName)
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).collect(Collectors.toList());
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if(methodDescriptor != null) {
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String signature = String.format("%s %s", memberName, methodDescriptor);
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candidates = candidates.stream().filter(
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m -> m.equals(signature)
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).collect(Collectors.toList());
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}
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switch(candidates.size()) {
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case 0:
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throw new MappingNotFoundException(String.format(
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"%s.%s%s",
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this.unobf,
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memberName,
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methodDescriptor == null ? "" : "()"
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));
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case 1:
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return members.get(candidates.get(0));
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default:
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throw new AmbiguousDefinitionException(String.format(
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"Mapper could not uniquely identify member %s.%s%s, found %d!",
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this.unobf,
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memberName,
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methodDescriptor == null ? "" : "()",
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candidates.size()
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));
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}
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}
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}
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}
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