diff options
| -rw-r--r-- | .editorconfig | 10 | ||||
| -rw-r--r-- | .gitignore | 26 | ||||
| -rw-r--r-- | build.gradle | 27 | ||||
| -rw-r--r-- | gradle/wrapper/gradle-wrapper.jar | bin | 0 -> 61574 bytes | |||
| -rw-r--r-- | gradle/wrapper/gradle-wrapper.properties | 6 | ||||
| -rw-r--r-- | gradlew | 244 | ||||
| -rw-r--r-- | gradlew.bat | 92 | ||||
| -rw-r--r-- | src/main/java/ftbsc/lll/exceptions/AmbiguousMappingException.java | 27 | ||||
| -rw-r--r-- | src/main/java/ftbsc/lll/exceptions/MappingNotFoundException.java | 27 | ||||
| -rw-r--r-- | src/main/java/ftbsc/lll/mapper/IMapper.java | 56 | ||||
| -rw-r--r-- | src/main/java/ftbsc/lll/mapper/impl/TSRGMapper.java | 72 | ||||
| -rw-r--r-- | src/main/java/ftbsc/lll/mapper/tools/ClassData.java | 100 | ||||
| -rw-r--r-- | src/main/java/ftbsc/lll/mapper/tools/MappingUtils.java | 56 |
13 files changed, 743 insertions, 0 deletions
diff --git a/.editorconfig b/.editorconfig new file mode 100644 index 0000000..b14394e --- /dev/null +++ b/.editorconfig @@ -0,0 +1,10 @@ +# Default to Unix-style newlines with a newline ending every file +[*] +end_of_line = lf +insert_final_newline = true +charset = utf-8 +indent_style = tab +indent_size = 4 + +[*.java] +indent_size = 2 diff --git a/.gitignore b/.gitignore new file mode 100644 index 0000000..86151fa --- /dev/null +++ b/.gitignore @@ -0,0 +1,26 @@ +# eclipse +bin +*.launch +.settings +.metadata +.classpath +.project + +# idea +out +*.ipr +*.iws +*.iml +.idea + +# gradle +build +.gradle +gradle.properties + +# other +eclipse +run + +# Files from Forge MDK +forge*changelog.txt diff --git a/build.gradle b/build.gradle new file mode 100644 index 0000000..7c18fc6 --- /dev/null +++ b/build.gradle @@ -0,0 +1,27 @@ +plugins { + id 'java-library' + id 'com.palantir.git-version' version '0.13.0' +} + +archivesBaseName = 'lll-mapper' +version = gitVersion() + +java { + sourceCompatibility = JavaVersion.VERSION_1_8 + targetCompatibility = JavaVersion.VERSION_1_8 + withSourcesJar() + withJavadocJar() +} + +repositories { + mavenCentral() + maven { url = 'https://maven.fantabos.co' } +} + +dependencies { + implementation 'ftbsc:lll:0.4.1' +} + +jar { + archiveFileName = "${jar.archiveBaseName.get()}-${project.version.split('-')[0]}.${jar.archiveExtension.get()}" +} diff --git a/gradle/wrapper/gradle-wrapper.jar b/gradle/wrapper/gradle-wrapper.jar Binary files differnew file mode 100644 index 0000000..943f0cb --- /dev/null +++ b/gradle/wrapper/gradle-wrapper.jar diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties new file mode 100644 index 0000000..f398c33 --- /dev/null +++ b/gradle/wrapper/gradle-wrapper.properties @@ -0,0 +1,6 @@ +distributionBase=GRADLE_USER_HOME +distributionPath=wrapper/dists +distributionUrl=https\://services.gradle.org/distributions/gradle-7.6-bin.zip +networkTimeout=10000 +zipStoreBase=GRADLE_USER_HOME +zipStorePath=wrapper/dists @@ -0,0 +1,244 @@ +#!/bin/sh + +# +# Copyright © 2015-2021 the original authors. +# +# Licensed under the Apache License, Version 2.0 (the "License"); +# you may not use this file except in compliance with the License. +# You may obtain a copy of the License at +# +# https://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, +# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +# See the License for the specific language governing permissions and +# limitations under the License. +# + +############################################################################## +# +# Gradle start up script for POSIX generated by Gradle. +# +# Important for running: +# +# (1) You need a POSIX-compliant shell to run this script. If your /bin/sh is +# noncompliant, but you have some other compliant shell such as ksh or +# bash, then to run this script, type that shell name before the whole +# command line, like: +# +# ksh Gradle +# +# Busybox and similar reduced shells will NOT work, because this script +# requires all of these POSIX shell features: +# * functions; +# * expansions «$var», «${var}», «${var:-default}», «${var+SET}», +# «${var#prefix}», «${var%suffix}», and «$( cmd )»; +# * compound commands having a testable exit status, especially «case»; +# * various built-in commands including «command», «set», and «ulimit». +# +# Important for patching: +# +# (2) This script targets any POSIX shell, so it avoids extensions provided +# by Bash, Ksh, etc; in particular arrays are avoided. +# +# The "traditional" practice of packing multiple parameters into a +# space-separated string is a well documented source of bugs and security +# problems, so this is (mostly) avoided, by progressively accumulating +# options in "$@", and eventually passing that to Java. +# +# Where the inherited environment variables (DEFAULT_JVM_OPTS, JAVA_OPTS, +# and GRADLE_OPTS) rely on word-splitting, this is performed explicitly; +# see the in-line comments for details. +# +# There are tweaks for specific operating systems such as AIX, CygWin, +# Darwin, MinGW, and NonStop. +# +# (3) This script is generated from the Groovy template +# https://github.com/gradle/gradle/blob/HEAD/subprojects/plugins/src/main/resources/org/gradle/api/internal/plugins/unixStartScript.txt +# within the Gradle project. +# +# You can find Gradle at https://github.com/gradle/gradle/. +# +############################################################################## + +# Attempt to set APP_HOME + +# Resolve links: $0 may be a link +app_path=$0 + +# Need this for daisy-chained symlinks. +while + APP_HOME=${app_path%"${app_path##*/}"} # leaves a trailing /; empty if no leading path + [ -h "$app_path" ] +do + ls=$( ls -ld "$app_path" ) + link=${ls#*' -> '} + case $link in #( + /*) app_path=$link ;; #( + *) app_path=$APP_HOME$link ;; + esac +done + +# This is normally unused +# shellcheck disable=SC2034 +APP_BASE_NAME=${0##*/} +APP_HOME=$( cd "${APP_HOME:-./}" && pwd -P ) || exit + +# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script. +DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"' + +# Use the maximum available, or set MAX_FD != -1 to use that value. +MAX_FD=maximum + +warn () { + echo "$*" +} >&2 + +die () { + echo + echo "$*" + echo + exit 1 +} >&2 + +# OS specific support (must be 'true' or 'false'). +cygwin=false +msys=false +darwin=false +nonstop=false +case "$( uname )" in #( + CYGWIN* ) cygwin=true ;; #( + Darwin* ) darwin=true ;; #( + MSYS* | MINGW* ) msys=true ;; #( + NONSTOP* ) nonstop=true ;; +esac + +CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar + + +# Determine the Java command to use to start the JVM. +if [ -n "$JAVA_HOME" ] ; then + if [ -x "$JAVA_HOME/jre/sh/java" ] ; then + # IBM's JDK on AIX uses strange locations for the executables + JAVACMD=$JAVA_HOME/jre/sh/java + else + JAVACMD=$JAVA_HOME/bin/java + fi + if [ ! -x "$JAVACMD" ] ; then + die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME + +Please set the JAVA_HOME variable in your environment to match the +location of your Java installation." + fi +else + JAVACMD=java + which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH. + +Please set the JAVA_HOME variable in your environment to match the +location of your Java installation." +fi + +# Increase the maximum file descriptors if we can. +if ! "$cygwin" && ! "$darwin" && ! "$nonstop" ; then + case $MAX_FD in #( + max*) + # In POSIX sh, ulimit -H is undefined. That's why the result is checked to see if it worked. + # shellcheck disable=SC3045 + MAX_FD=$( ulimit -H -n ) || + warn "Could not query maximum file descriptor limit" + esac + case $MAX_FD in #( + '' | soft) :;; #( + *) + # In POSIX sh, ulimit -n is undefined. That's why the result is checked to see if it worked. + # shellcheck disable=SC3045 + ulimit -n "$MAX_FD" || + warn "Could not set maximum file descriptor limit to $MAX_FD" + esac +fi + +# Collect all arguments for the java command, stacking in reverse order: +# * args from the command line +# * the main class name +# * -classpath +# * -D...appname settings +# * --module-path (only if needed) +# * DEFAULT_JVM_OPTS, JAVA_OPTS, and GRADLE_OPTS environment variables. + +# For Cygwin or MSYS, switch paths to Windows format before running java +if "$cygwin" || "$msys" ; then + APP_HOME=$( cygpath --path --mixed "$APP_HOME" ) + CLASSPATH=$( cygpath --path --mixed "$CLASSPATH" ) + + JAVACMD=$( cygpath --unix "$JAVACMD" ) + + # Now convert the arguments - kludge to limit ourselves to /bin/sh + for arg do + if + case $arg in #( + -*) false ;; # don't mess with options #( + /?*) t=${arg#/} t=/${t%%/*} # looks like a POSIX filepath + [ -e "$t" ] ;; #( + *) false ;; + esac + then + arg=$( cygpath --path --ignore --mixed "$arg" ) + fi + # Roll the args list around exactly as many times as the number of + # args, so each arg winds up back in the position where it started, but + # possibly modified. + # + # NB: a `for` loop captures its iteration list before it begins, so + # changing the positional parameters here affects neither the number of + # iterations, nor the values presented in `arg`. + shift # remove old arg + set -- "$@" "$arg" # push replacement arg + done +fi + +# Collect all arguments for the java command; +# * $DEFAULT_JVM_OPTS, $JAVA_OPTS, and $GRADLE_OPTS can contain fragments of +# shell script including quotes and variable substitutions, so put them in +# double quotes to make sure that they get re-expanded; and +# * put everything else in single quotes, so that it's not re-expanded. + +set -- \ + "-Dorg.gradle.appname=$APP_BASE_NAME" \ + -classpath "$CLASSPATH" \ + org.gradle.wrapper.GradleWrapperMain \ + "$@" + +# Stop when "xargs" is not available. +if ! command -v xargs >/dev/null 2>&1 +then + die "xargs is not available" +fi + +# Use "xargs" to parse quoted args. +# +# With -n1 it outputs one arg per line, with the quotes and backslashes removed. +# +# In Bash we could simply go: +# +# readarray ARGS < <( xargs -n1 <<<"$var" ) && +# set -- "${ARGS[@]}" "$@" +# +# but POSIX shell has neither arrays nor command substitution, so instead we +# post-process each arg (as a line of input to sed) to backslash-escape any +# character that might be a shell metacharacter, then use eval to reverse +# that process (while maintaining the separation between arguments), and wrap +# the whole thing up as a single "set" statement. +# +# This will of course break if any of these variables contains a newline or +# an unmatched quote. +# + +eval "set -- $( + printf '%s\n' "$DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS" | + xargs -n1 | + sed ' s~[^-[:alnum:]+,./:=@_]~\\&~g; ' | + tr '\n' ' ' + )" '"$@"' + +exec "$JAVACMD" "$@" diff --git a/gradlew.bat b/gradlew.bat new file mode 100644 index 0000000..93e3f59 --- /dev/null +++ b/gradlew.bat @@ -0,0 +1,92 @@ +@rem +@rem Copyright 2015 the original author or authors. +@rem +@rem Licensed under the Apache License, Version 2.0 (the "License"); +@rem you may not use this file except in compliance with the License. +@rem You may obtain a copy of the License at +@rem +@rem https://www.apache.org/licenses/LICENSE-2.0 +@rem +@rem Unless required by applicable law or agreed to in writing, software +@rem distributed under the License is distributed on an "AS IS" BASIS, +@rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +@rem See the License for the specific language governing permissions and +@rem limitations under the License. +@rem + +@if "%DEBUG%"=="" @echo off +@rem ########################################################################## +@rem +@rem Gradle startup script for Windows +@rem +@rem ########################################################################## + +@rem Set local scope for the variables with windows NT shell +if "%OS%"=="Windows_NT" setlocal + +set DIRNAME=%~dp0 +if "%DIRNAME%"=="" set DIRNAME=. +@rem This is normally unused +set APP_BASE_NAME=%~n0 +set APP_HOME=%DIRNAME% + +@rem Resolve any "." and ".." in APP_HOME to make it shorter. +for %%i in ("%APP_HOME%") do set APP_HOME=%%~fi + +@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script. +set DEFAULT_JVM_OPTS="-Xmx64m" "-Xms64m" + +@rem Find java.exe +if defined JAVA_HOME goto findJavaFromJavaHome + +set JAVA_EXE=java.exe +%JAVA_EXE% -version >NUL 2>&1 +if %ERRORLEVEL% equ 0 goto execute + +echo. +echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH. +echo. +echo Please set the JAVA_HOME variable in your environment to match the +echo location of your Java installation. + +goto fail + +:findJavaFromJavaHome +set JAVA_HOME=%JAVA_HOME:"=% +set JAVA_EXE=%JAVA_HOME%/bin/java.exe + +if exist "%JAVA_EXE%" goto execute + +echo. +echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME% +echo. +echo Please set the JAVA_HOME variable in your environment to match the +echo location of your Java installation. + +goto fail + +:execute +@rem Setup the command line + +set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar + + +@rem Execute Gradle +"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %* + +:end +@rem End local scope for the variables with windows NT shell +if %ERRORLEVEL% equ 0 goto mainEnd + +:fail +rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of +rem the _cmd.exe /c_ return code! +set EXIT_CODE=%ERRORLEVEL% +if %EXIT_CODE% equ 0 set EXIT_CODE=1 +if not ""=="%GRADLE_EXIT_CONSOLE%" exit %EXIT_CODE% +exit /b %EXIT_CODE% + +:mainEnd +if "%OS%"=="Windows_NT" endlocal + +:omega diff --git a/src/main/java/ftbsc/lll/exceptions/AmbiguousMappingException.java b/src/main/java/ftbsc/lll/exceptions/AmbiguousMappingException.java new file mode 100644 index 0000000..794759a --- /dev/null +++ b/src/main/java/ftbsc/lll/exceptions/AmbiguousMappingException.java @@ -0,0 +1,27 @@ +package ftbsc.lll.exceptions; + +import ftbsc.lll.mapper.IMapper; + +/** + * Thrown when a given {@link IMapper} cannot uniquely identify a mapping with + * the given data. + */ +public class AmbiguousMappingException extends RuntimeException { + + /** + * Constructs a new ambiguous mapping definition exception with the specified detail message. + * @param message the detail message + */ + public AmbiguousMappingException(String message) { + super(message); + } + + /** + * Constructs a new ambiguous definition exception with the specified detail message and cause. + * @param message the detail message + * @param cause the cause, may be null (indicating nonexistent or unknown cause) + */ + public AmbiguousMappingException(String message, Throwable cause) { + super(message, cause); + } +}
\ No newline at end of file diff --git a/src/main/java/ftbsc/lll/exceptions/MappingNotFoundException.java b/src/main/java/ftbsc/lll/exceptions/MappingNotFoundException.java new file mode 100644 index 0000000..6c286fc --- /dev/null +++ b/src/main/java/ftbsc/lll/exceptions/MappingNotFoundException.java @@ -0,0 +1,27 @@ +package ftbsc.lll.exceptions; + +import ftbsc.lll.mapper.IMapper; + +/** + * Thrown upon failure to find the requested mapping within a loaded {@link IMapper}. + */ +public class MappingNotFoundException extends RuntimeException { + + /** + * Constructs a new mapping not found exception for the specified mapping. + * @param mapping the relevant mapping + */ + public MappingNotFoundException(String mapping) { + super(String.format("Could not find mapping for %s!", mapping)); + } + + /** + * Constructs a new mapping not found exception for the specified mapping + * with the specified reason. + * @param mapping the relevant mapping + * @param reason the reason message + */ + public MappingNotFoundException(String mapping, String reason) { + this(mapping + ": " + reason); + } +} diff --git a/src/main/java/ftbsc/lll/mapper/IMapper.java b/src/main/java/ftbsc/lll/mapper/IMapper.java new file mode 100644 index 0000000..8adf860 --- /dev/null +++ b/src/main/java/ftbsc/lll/mapper/IMapper.java @@ -0,0 +1,56 @@ +package ftbsc.lll.mapper; + +import ftbsc.lll.exceptions.MappingNotFoundException; + +import java.util.HashSet; +import java.util.ServiceLoader; +import java.util.Set; + +/** + * A generic obfuscation mapper. + */ +public interface IMapper { + + /** + * Reads the given lines of text and attempts to interpret them as + * mappings of the given type. + * @param lines the lines to read + */ + void populate(Iterable<String> lines); + + /** + * Gets the obfuscated name of the class. + * @param name the unobfuscated internal name of the desired class + * @return the obfuscated name of the class + * @throws MappingNotFoundException if no mapping is found + */ + String obfuscateClass(String name); + + /** + * Gets the obfuscated name of a class member (field or method). + * @param parentName the unobfuscated internal name of the parent class + * @param memberName the field name or method signature + * @param methodDescriptor the descriptor of the member + * @return the obfuscated name of the given member + * @throws MappingNotFoundException if no mapping is found + */ + String obfuscateMember(String parentName, String memberName, String methodDescriptor); + + /** + * Loads all valid parsers available in the classpath (via the Java Service API), + * attempts to parse the given lines into mappings, and returns all built mappers + * that succeeded without throwing errors or ftbsc.lll.exceptions. + * @param lines the lines of the mapping file + * @return a {@link Set} of mappers that could interpret the given input + */ + static Set<IMapper> getMappers(Iterable<String> lines) { + Set<IMapper> parsed = new HashSet<>(); + for(IMapper mapper: ServiceLoader.load(IMapper.class)) { + try { + mapper.populate(lines); + parsed.add(mapper); + } catch(Throwable ignored) {} + } + return parsed; + } +} diff --git a/src/main/java/ftbsc/lll/mapper/impl/TSRGMapper.java b/src/main/java/ftbsc/lll/mapper/impl/TSRGMapper.java new file mode 100644 index 0000000..0fc6489 --- /dev/null +++ b/src/main/java/ftbsc/lll/mapper/impl/TSRGMapper.java @@ -0,0 +1,72 @@ +package ftbsc.lll.mapper.impl; + +import ftbsc.lll.exceptions.MappingNotFoundException; +import ftbsc.lll.mapper.IMapper; +import ftbsc.lll.mapper.tools.ClassData; + +import java.util.HashMap; +import java.util.Map; + +/** + * Parses a .tsrg file into a mapper capable of converting from + * plain names to obfuscated ones and vice versa. + */ +public class TSRGMapper implements IMapper { + + /** + * A Map containing the deobfuscated names as keys and information about + * each class as values. + */ + private final Map<String, ClassData> mappings = new HashMap<>(); + + /** + * Reads the given lines of text and attempts to interpret them as + * mappings of the given type. + * @param lines the lines to read + */ + @Override + public void populate(Iterable<String> lines) { + String currentClass = ""; + for(String l : lines) { + if(l == null) continue; + if(l.startsWith("\t")) + mappings.get(currentClass).addMember(l); + else { + String[] sp = l.split(" "); + ClassData s = new ClassData(sp[0], sp[1]); + currentClass = s.unobf; + mappings.put(s.unobf, s); + } + } + } + + /** + * Gets the obfuscated name of the class. + * @param name the unobfuscated internal name of the desired class + * @return the obfuscated name of the class + * @throws MappingNotFoundException if no mapping is found + */ + @Override + public String obfuscateClass(String name) { + ClassData data = mappings.get(name.replace('.', '/')); + if(data == null) + throw new MappingNotFoundException(name); + else return data.obf; + } + + /** + * Gets the obfuscated name of a class member (field or method). + * @param parentName the unobfuscated internal name of the parent class + * @param memberName the field name or method signature + * @param methodDescriptor the optional descriptor of the member, may be null or partial + * @return the obfuscated name of the given member + * @throws MappingNotFoundException if no mapping is found + */ + @Override + public String obfuscateMember(String parentName, String memberName, String methodDescriptor) { + ClassData data = mappings.get(parentName.replace('.', '/')); + if(data == null) + throw new MappingNotFoundException(parentName + "::" + memberName); + return data.get(memberName, methodDescriptor); + } +} diff --git a/src/main/java/ftbsc/lll/mapper/tools/ClassData.java b/src/main/java/ftbsc/lll/mapper/tools/ClassData.java new file mode 100644 index 0000000..a9fbcec --- /dev/null +++ b/src/main/java/ftbsc/lll/mapper/tools/ClassData.java @@ -0,0 +1,100 @@ +package ftbsc.lll.mapper.tools; + +import ftbsc.lll.exceptions.AmbiguousMappingException; +import ftbsc.lll.exceptions.MappingNotFoundException; + +import java.util.HashMap; +import java.util.List; +import java.util.Map; +import java.util.stream.Collectors; + +/** + * Container class used to store information about classes. + */ +public class ClassData { + /** + * The unobfuscated name (FQN with '/' instad of '.') of the class. + */ + public final String unobf; + + /** + * The obfuscated internal name (FQN with '/' instad of '.') of the class. + */ + public final String obf; + + /** + * A {@link Map} tying each member's name or signature to its + * obfuscated counterpart. + */ + public final Map<String, String> members; + + /** + * The constructor. It takes in the names (obfuscated and non-obfuscated) + * of a class. + * @param unobf the unobfuscated name + * @param obf the obfuscated name + */ + public ClassData(String unobf, String obf) { + this.unobf = unobf; + this.obf = obf; + this.members = new HashMap<>(); + } + + /** + * Adds a member to the target class. + * For fields only the names are required; for methods, + * this takes in the full signature ({@code name + " " + space}). + * @param s the String representing the declaration line + */ + public void addMember(String s) { + String[] split = s.trim().split(" "); + if(split.length == 2) //field + members.put(split[0], split[1]); + else if (split.length == 3) //method + members.put(split[0] + " " + split[1], split[2]); + } + + /** + * Gets an obfuscated member given the method name and a method descriptor, + * which may be partial (i.e. not include return type) or null if the member + * is not a method. + * @param memberName member name + * @param methodDescriptor the method descriptor, or null if it's not a method + * @return the requested obfuscated name, or null if nothing was found + * @throws AmbiguousMappingException if not enough data was given to uniquely identify a mapping + */ + public String get(String memberName, String methodDescriptor) { + + //find all keys that start with the name + List<String> candidates = members.keySet().stream().filter( + m -> m.split(" ")[0].equals(memberName) + ).collect(Collectors.toList()); + + if(methodDescriptor != null) { + String signature = String.format("%s %s", memberName, methodDescriptor); + candidates = candidates.stream().filter( + m -> m.equals(signature) + ).collect(Collectors.toList()); + } + + switch(candidates.size()) { + case 0: + throw new MappingNotFoundException(String.format( + "%s.%s%s", + this.unobf, + memberName, + methodDescriptor == null ? "" : "()" + )); + case 1: + return members.get(candidates.get(0)); + default: + throw new AmbiguousMappingException(String.format( + "Mapper could not uniquely identify member %s.%s%s, found %d!", + this.unobf, + memberName, + methodDescriptor == null ? "" : "()", + candidates.size() + )); + } + } +}
\ No newline at end of file diff --git a/src/main/java/ftbsc/lll/mapper/tools/MappingUtils.java b/src/main/java/ftbsc/lll/mapper/tools/MappingUtils.java new file mode 100644 index 0000000..918052a --- /dev/null +++ b/src/main/java/ftbsc/lll/mapper/tools/MappingUtils.java @@ -0,0 +1,56 @@ +package ftbsc.lll.mapper.tools; + +import ftbsc.lll.exceptions.MappingNotFoundException; +import ftbsc.lll.mapper.IMapper; +import ftbsc.lll.tools.DescriptorBuilder; +import org.objectweb.asm.Type; + +public class MappingUtils { + /** + * Obfuscates a method descriptor, replacing its class references + * with their obfuscated counterparts. + * @param descriptor a {@link String} containing the descriptor + * @return the obfuscated descriptor + */ + public static String obfuscateMethodDescriptor(String descriptor, IMapper mapper) { + Type method = Type.getMethodType(descriptor); + Type[] arguments = method.getArgumentTypes(); + Type returnType = method.getReturnType(); + + Type[] obfArguments = new Type[arguments.length]; + for(int i = 0; i < obfArguments.length; i++) + obfArguments[i] = obfuscateType(arguments[i], mapper); + + return Type.getMethodDescriptor(obfuscateType(returnType, mapper), obfArguments); + } + + /** + * Given a {@link Type} and a valid {@link IMapper} it returns its obfuscated + * counterpart. + * @param type the type in question + * @return the obfuscated type + */ + public static Type obfuscateType(Type type, IMapper mapper) { + //unwrap arrays + Type unwrapped = type; + int arrayLevel = 0; + while(unwrapped.getSort() == Type.ARRAY) { + unwrapped = unwrapped.getElementType(); + arrayLevel++; + } + + //if it's a primitive no operation is needed + if(type.getSort() < Type.ARRAY) + return type; + + String internalName = type.getInternalName(); + + String internalNameObf; + try { + internalNameObf = mapper.obfuscateClass(internalName); + return Type.getType(DescriptorBuilder.nameToDescriptor(internalNameObf, arrayLevel)); + } catch(MappingNotFoundException e) { + return type; + } + } +} |