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.settings/
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CODE BASED ON https://github.com/odnoklassniki/one-elf

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Apache License
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# RPXParserLib - A Java RPX/RPL parser library
A library to parse the executables of the the Wii U.
Example usages:
```
// Load RPX/RPL
RPXFile rpxFile = new RPXFile(new File("test.rpx"));
// Get all function symbols from the .text section
boolean hasSymbols = rpxFile.hasSymbols(); // Check if the file is not stripped.
List<ElfSymbol> functionSymbols = rpxFile.getFunctionSymbolsText();
// Get the data for a given ElfSymbol.
Optional<byte[]> functionData = rpxFile.getFunctionData(symbol);
// Get all imports
Map<String, List<RPLImport>> imports = rpxFile.getImports();
// Get all exports
List<ElfExport> exports = rpxFile.getImports();
```
# Use in projects
This library can be easily used via [jitpack.io](https://jitpack.io/) .
In the following the usage with maven will be explained.
Please take a look at the jitpack website for information on usage with other tools.
Add the jitpack repository to the `pom.xml`
```
<repositories>
<repository>
<id>jitpack.io</id>
<url>https://jitpack.io</url>
</repository>
</repositories>
```
Then add the library as an dependency.
```
<dependency>
<groupId>com.github.wiiu-env</groupId>
<artifactId>RPXParserLib</artifactId>
<version></version>
</dependency>
```
As the version, you can use any tag or hash of this repository.
# Credits
Based on: https://github.com/odnoklassniki/one-elf
References:
- https://github.com/decaf-emu/ida_rpl_loader
- https://github.com/aerosoul94/ida_gel/tree/master/src/wiiu
- https://github.com/Relys/rpl2elf

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<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>de.orb</groupId>
<artifactId>rpxparser</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>
<name>rpxparser</name>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<maven.compiler.source>11</maven.compiler.source>
</properties>
<dependencies>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<version>1.18.4</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.8.0</version>
<configuration>
<release>11</release>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-source-plugin</artifactId>
<version>3.0.1</version>
<executions>
<execution>
<id>attach-sources</id>
<goals>
<goal>jar-no-fork</goal>
</goals>
</execution>
</executions>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-javadoc-plugin</artifactId>
<version>3.0.0</version>
<executions>
<execution>
<id>attach-javadocs</id>
<goals>
<goal>jar</goal>
</goals>
</execution>
</executions>
</plugin>
</plugins>
</build>
</project>

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/*
* Copyright 2016 Odnoklassniki Ltd, Mail.Ru Group
*
* 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 de.orb.wiiu.rpxparser;
import java.io.IOException;
public class ElfException extends IOException {
/**
*
*/
private static final long serialVersionUID = 1L;
public ElfException() {
}
public ElfException(String message) {
super(message);
}
public ElfException(String message, Throwable cause) {
super(message, cause);
}
public ElfException(Throwable cause) {
super(cause);
}
}

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package de.orb.wiiu.rpxparser;
import java.nio.ByteBuffer;
public class ElfExport {
private final long offset;
private final int nameIndex;
private final ByteBuffer buf;
private final boolean isData;
// Export SHT_RPL_EXPORTS name TLS flag
private static final int EXN_RPL_TLS = 0x80000000;
public ElfExport(ByteBuffer buf, int offset, boolean isData) {
this.buf = buf;
this.offset = buf.getInt(offset + 0) & 0xFFFFFFFFL;
this.nameIndex = buf.getInt(offset + 4) & ~EXN_RPL_TLS;
this.isData = isData;
}
public String name() {
int pos = nameIndex;
StringBuilder result = new StringBuilder();
for (byte b; (b = buf.get(pos)) != 0; pos++) {
result.append((char) b);
}
return result.toString();
}
public long offset() {
return offset;
}
public boolean isData() {
return isData;
}
@Override
public String toString() {
return String.format("%s@%08X(%s)", name(), offset(), (isData() ? "data" : "function"));
}
}

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package de.orb.wiiu.rpxparser;
import java.util.Iterator;
import java.util.stream.IntStream;
import java.util.stream.Stream;
public class ElfExportsTable extends ElfSection implements Iterable<ElfExport> {
ElfExportsTable(ElfReader reader, int offset) {
super(reader, offset);
}
private ElfExport export(int index) {
return new ElfExport(getSectionBuffer(), 8 + index * 8, name().startsWith(".d"));
}
@Override
public int count() {
return getSectionBuffer().getInt(0);
}
public Stream<ElfExport> stream() {
return IntStream.range(0, count()).mapToObj(i -> export(i));
}
@Override
public Iterator<ElfExport> iterator() {
return new Iterator<ElfExport>() {
private final int count = count();
private int index = 0;
@Override
public boolean hasNext() {
return index < count;
}
@Override
public ElfExport next() {
return export(index++);
}
@Override
public void remove() {
throw new UnsupportedOperationException();
}
};
}
}

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package de.orb.wiiu.rpxparser;
import java.nio.ByteBuffer;
public class ElfImportsTable extends ElfRelocationTable {
ElfImportsTable(ElfReader reader, int offset) {
super(reader, offset);
}
public String rplname() {
ByteBuffer buf = getSectionBuffer();
int pos = (int) 8;
StringBuilder result = new StringBuilder();
for (byte b; (b = buf.get(pos)) != 0; pos++) {
result.append((char) b);
}
return result.toString();
}
}

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/*
* Copyright 2016 Odnoklassniki Ltd, Mail.Ru Group
*
* 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 de.orb.wiiu.rpxparser;
import java.io.File;
import java.io.IOException;
import java.io.RandomAccessFile;
import java.nio.ByteBuffer;
import java.nio.ByteOrder;
import java.nio.channels.FileChannel;
import java.util.Arrays;
import java.util.Optional;
import java.util.stream.Stream;
public class ElfReader {
public static final short ET_NONE = 0;
public static final short ET_REL = 1;
public static final short ET_EXEC = 2;
public static final short ET_DYN = 3;
public static final short ET_CORE = 4;
public static final short ET_NUM = 5;
public static final short ET_LOOS = (short) 0xfe00;
public static final short ET_HIOS = (short) 0xfeff;
public static final short ET_LOPROC = (short) 0xff00;
public static final short ET_HIPROC = (short) 0xffff;
public static final short EM_NONE = 0;
public static final short EM_SPARC = 2;
public static final short EM_386 = 3;
public static final short EM_PPC = 20;
public static final short EM_PPC64 = 21;
public static final short EM_ARM = 40;
public static final short EM_SPARCV9 = 43;
public static final short EM_IA_64 = 50;
public static final short EM_X86_64 = 62;
public static final short EM_AARCH64 = 183;
public static final byte ELFOSABI_SYSV = 0;
public static final byte ELFOSABI_HPUX = 1;
public static final byte ELFOSABI_NETBSD = 2;
public static final byte ELFOSABI_GNU = 3;
public static final byte ELFOSABI_SOLARIS = 6;
public static final byte ELFOSABI_AIX = 7;
public static final byte ELFOSABI_IRIX = 8;
public static final byte ELFOSABI_FREEBSD = 9;
public static final byte ELFOSABI_TRU64 = 10;
public static final byte ELFOSABI_MODESTO = 11;
public static final byte ELFOSABI_OPENBSD = 12;
public static final byte ELFOSABI_ARM_AEABI = 64;
public static final byte ELFOSABI_ARM = 97;
public static final byte ELFOSABI_STANDALONE = -1;
final ByteBuffer buf;
final byte abi;
final byte abiVersion;
final short type;
final short machine;
final int version;
final int flags;
final long entry;
final ElfSection[] sections;
final ElfStringTable strtab;
public static ElfReader create(String fileName) throws IOException {
return ElfReader.create(new File(fileName));
}
public static ElfReader create(File file) throws IOException {
RandomAccessFile raf = new RandomAccessFile(file, "r");
try {
return new ElfReader(raf.getChannel().map(FileChannel.MapMode.READ_ONLY, 0, raf.length()));
} finally {
raf.close();
}
}
public ElfReader(ByteBuffer buf) throws IOException {
this.buf = buf;
byte[] ident = new byte[16];
buf.get(ident);
if (ident[0] != 0x7f || ident[1] != 'E' || ident[2] != 'L' || ident[3] != 'F') {
throw new ElfException("Invalid ELF signature");
}
switch (ident[4]) {
case 1:
break;
case 2:
throw new ElfException("ELF64 not supported");
default:
throw new ElfException("Invalid ELF class");
}
switch (ident[5]) {
case 1:
buf.order(ByteOrder.LITTLE_ENDIAN);
break;
case 2:
buf.order(ByteOrder.BIG_ENDIAN);
break;
default:
throw new ElfException("Invalid ELF endian");
}
if (ident[6] != 1) {
throw new ElfException("Invalid ELF version");
}
this.abi = ident[7];
this.abiVersion = ident[8];
this.type = buf.getShort(16);
this.machine = buf.getShort(18);
this.version = buf.getInt(20);
this.entry = buf.getInt(24) & 0xffffffffL;
this.flags = buf.getInt(36);
this.sections = readSections(buf.getInt(32), buf.getShort(46) & 0xffff, buf.getShort(48) & 0xffff);
this.strtab = (ElfStringTable) sections[buf.getShort(50) & 0xffff];
if (strtab == null) {
throw new ElfException(".strtab section was null");
}
}
private ElfSection[] readSections(int start, int entrySize, int entries) {
ElfSection[] sections = new ElfSection[entries];
for (int i = 0; i < entries; i++) {
sections[i] = ElfSection.read(this, start + i * entrySize);
}
return sections;
}
protected Stream<ElfSection> sections() {
return Arrays.stream(sections).filter(s -> s != null);
}
public Optional<ElfSection> section(String name) {
return sections().filter(section -> section.name().equals(name)).findFirst();
}
public ByteOrder endian() {
return buf.order();
}
public byte abi() {
return abi;
}
public byte abiVersion() {
return abiVersion;
}
public short type() {
return type;
}
public short machine() {
return machine;
}
public int version() {
return version;
}
public int flags() {
return flags;
}
public long entry() {
return entry;
}
}

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/*
* Copyright 2016 Odnoklassniki Ltd, Mail.Ru Group
*
* 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 de.orb.wiiu.rpxparser;
import java.nio.ByteBuffer;
import java.util.Optional;
public class ElfRelocation {
public static final int R_PPC_NONE = 0;
final Optional<ElfSymbolTable> symtab;
final long offset;
final long info;
final long addend;
ElfRelocation(ByteBuffer buf, ElfRelocationTable rel, int offset, ElfReader reader) {
this.symtab = rel.link().map(e -> (ElfSymbolTable) e);
this.offset = buf.getInt(offset) & 0xffffffffL;
this.info = buf.getInt(offset + 4) & 0xffffffffL;
this.addend = rel.entrySize >= 12 ? buf.getInt(offset + 8) : 0;
}
public long offset() {
return offset;
}
public Optional<ElfSymbol> symbol() {
if (type() == R_PPC_NONE) {
return Optional.empty();
}
return symtab.map(tab -> tab.symbol((int) ((info) >> 8)));
}
public int type() {
return (int) info & 0xFF;
}
public long addend() {
return addend;
}
@Override
public String toString() {
return symbol()//
.map(s -> s.name().orElse("EMPTY_NAME") + '(' + type() + ')' + addend)//
.orElse("NULL" + '(' + type() + ')' + addend);
}
}

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/*
* Copyright 2016 Odnoklassniki Ltd, Mail.Ru Group
*
* 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 de.orb.wiiu.rpxparser;
import java.util.Iterator;
import java.util.stream.IntStream;
import java.util.stream.Stream;
public class ElfRelocationTable extends ElfSection implements Iterable<ElfRelocation> {
ElfRelocationTable(ElfReader reader, int offset) {
super(reader, offset);
}
public ElfRelocation relocation(int index) {
return new ElfRelocation(getSectionBuffer(), this, (int) (index * entrySize), reader);
}
public Stream<ElfRelocation> stream() {
return IntStream.range(0, count()).mapToObj(i -> relocation(i));
}
@Override
public Iterator<ElfRelocation> iterator() {
return new Iterator<ElfRelocation>() {
final int count = count();
int index = 0;
@Override
public boolean hasNext() {
return index < count;
}
@Override
public ElfRelocation next() {
return relocation(index++);
}
@Override
public void remove() {
throw new UnsupportedOperationException();
}
};
}
}

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/*
* Copyright 2016 Odnoklassniki Ltd, Mail.Ru Group
*
* 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 de.orb.wiiu.rpxparser;
import java.nio.ByteBuffer;
import java.util.Optional;
import java.util.zip.DataFormatException;
import java.util.zip.Inflater;
public class ElfSection {
public static final int SHT_NULL = 0;
public static final int SHT_PROGBITS = 1;
public static final int SHT_SYMTAB = 2;
public static final int SHT_STRTAB = 3;
public static final int SHT_RELA = 4;
public static final int SHT_HASH = 5;
public static final int SHT_DYNAMIC = 6;
public static final int SHT_NOTE = 7;
public static final int SHT_NOBITS = 8;
public static final int SHT_REL = 9;
public static final int SHT_SHLIB = 10;
public static final int SHT_DYNSYM = 11;
public static final int SHT_LOPROC = 0x70000000;
public static final int SHT_HIPROC = 0x7fffffff;
public static final int SHT_LOUSER = 0x80000000;
public static final int SHT_RPL_EXPORTS = 0x80000001;
public static final int SHT_RPL_IMPORTS = 0x80000002;
public static final int SHT_HIUSER = 0xffffffff;
final ElfReader reader;
final int nameIndex;
final int type;
final long flags;
final long address;
final long offset;
final long orgSize; // the inside the .elf. may be the size of the compressed section
final long size; // the true size of the section.
final int linkIndex;
final int info;
final long align;
final long entrySize;
ElfSection(ElfReader reader, int offset) {
ByteBuffer buf = reader.buf;
this.reader = reader;
this.nameIndex = buf.getInt(offset);
this.type = buf.getInt(offset + 4);
this.flags = buf.getInt(offset + 8) & 0xffffffffL;
this.address = buf.getInt(offset + 12) & 0xffffffffL;
this.offset = buf.getInt(offset + 16) & 0xffffffffL;
this.orgSize = buf.getInt(offset + 20) & 0xffffffffL;
this.linkIndex = buf.getInt(offset + 24);
this.info = buf.getInt(offset + 28);
this.align = buf.getInt(offset + 32);
this.entrySize = buf.getInt(offset + 36);
long tmp_size = orgSize;
// Fix the size of section when its compressed.
if ((flags & RPX_SHDR_ZLIB_FLAG) == RPX_SHDR_ZLIB_FLAG) {
buf.position((int) this.offset);
tmp_size = buf.getInt();
}
size = tmp_size;
}
public String name() {
// we can be sure the strtab is NOT null.
return reader.strtab.string(nameIndex);
}
public int type() {
return type;
}
public long flags() {
return flags;
}
public long address() {
return address;
}
public long offset() {
return offset;
}
public long size() {
return size;
}
public Optional<ElfSection> link() {
return Optional.ofNullable(reader.sections[linkIndex]);
}
public int info() {
return info;
}
public long align() {
return align;
}
public long entrySize() {
return entrySize;
}
public int count() {
return entrySize == 0 ? 0 : (int) (size / entrySize);
}
@Override
public String toString() {
return getClass().getSimpleName() + '(' + name() + ')';
}
ByteBuffer curBuffer = null;
public ByteBuffer getSectionBuffer() {
if (curBuffer != null) {
return curBuffer;
}
ByteBuffer buf = reader.buf;
buf.position((int) offset);
byte[] data = new byte[(int) orgSize];
buf.get(data, 0, (int) orgSize);
if ((flags & RPX_SHDR_ZLIB_FLAG) == RPX_SHDR_ZLIB_FLAG) {
long section_size_inflated = buf.getInt(0) & 0xFFFFFFFF;
Inflater inflater = new Inflater();
inflater.setInput(data, 4, (int) orgSize - 4); // the first byte is the size
byte[] decompressed = new byte[(int) section_size_inflated];
try {
inflater.inflate(decompressed);
} catch (DataFormatException e) {
// TODO
e.printStackTrace();
}
inflater.end();
data = decompressed;
}
curBuffer = ByteBuffer.wrap(data).order(buf.order());
return curBuffer;
}
public static final int RPX_SHDR_ZLIB_FLAG = 0x08000000;
static ElfSection read(ElfReader reader, int offset) {
int type = reader.buf.getInt(offset + 4);
switch (type) {
case SHT_NULL:
return null;
case SHT_SYMTAB:
case SHT_DYNSYM:
return new ElfSymbolTable(reader, offset);
case SHT_STRTAB:
return new ElfStringTable(reader, offset);
case SHT_RELA:
case SHT_REL:
return new ElfRelocationTable(reader, offset);
case SHT_RPL_IMPORTS:
return new ElfImportsTable(reader, offset);
case SHT_RPL_EXPORTS:
return new ElfExportsTable(reader, offset);
default:
return new ElfSection(reader, offset);
}
}
}

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/*
* Copyright 2016 Odnoklassniki Ltd, Mail.Ru Group
*
* 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 de.orb.wiiu.rpxparser;
import java.nio.ByteBuffer;
public class ElfStringTable extends ElfSection {
ElfStringTable(ElfReader reader, int offset) {
super(reader, offset);
}
public String string(int index) {
ByteBuffer buf = getSectionBuffer();
int pos = (int) index;
StringBuilder result = new StringBuilder();
for (byte b; (b = buf.get(pos)) != 0; pos++) {
result.append((char) b);
}
return result.toString();
}
}

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/*
* Copyright 2016 Odnoklassniki Ltd, Mail.Ru Group
*
* 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 de.orb.wiiu.rpxparser;
import java.nio.ByteBuffer;
import java.util.Optional;
public class ElfSymbol {
public static final byte STB_LOCAL = 0;
public static final byte STB_GLOBAL = 1;
public static final byte STB_WEAK = 2;
public static final byte STB_LOPROC = 13;
public static final byte STB_HIPROC = 15;
public static final byte STT_NOTYPE = 0;
public static final byte STT_OBJECT = 1;
public static final byte STT_FUNC = 2;
public static final byte STT_SECTION = 3;
public static final byte STT_FILE = 4;
public static final byte STT_LOPROC = 13;
public static final byte STT_HIPROC = 15;
public static final int SHN_LORESERVE = 0xff00; /* Start of reserved indices */
public static final int SHN_HIRESERVE = 0xffff; /* End of reserved indices */
final ElfReader reader;
final Optional<ElfStringTable> strtab;
final int nameIndex;
final int info;
final byte other;
final int sectionIndex;
final long value;
final long size;
ElfSymbol(ByteBuffer buf, Optional<ElfStringTable> strtab, int offset, ElfReader reader) {
this.reader = reader;
this.strtab = strtab;
this.nameIndex = buf.getInt(offset);
this.value = buf.getInt(offset + 4) & 0xffffffffL;
this.size = buf.getInt(offset + 8) & 0xffffffffL;
this.info = buf.get(offset + 12) & 0xff;
this.other = buf.get(offset + 13);
this.sectionIndex = buf.getShort(offset + 14) & 0xffff;
}
public Optional<String> name() {
return strtab.map(s -> s.string(nameIndex));
}
public long value() {
return value;
}
public long size() {
return size;
}
public byte bind() {
return (byte) (info >> 4);
}
public byte type() {
return (byte) (info & 0xf);
}
public byte other() {
return other;
}
public Optional<ElfSection> section() {
if (sectionIndex >= SHN_LORESERVE && sectionIndex <= SHN_HIRESERVE) {
return Optional.empty();
}
return Optional.ofNullable(reader.sections[sectionIndex]);
}
@Override
public String toString() {
return name().map(name -> + '@' + Long.toHexString(value)).orElse("EMPTY_NAME@" + Long.toHexString(value));
}
}

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/*
* Copyright 2016 Odnoklassniki Ltd, Mail.Ru Group
*
* 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 de.orb.wiiu.rpxparser;
import java.util.Iterator;
import java.util.Optional;
import java.util.stream.IntStream;
import java.util.stream.Stream;
public class ElfSymbolTable extends ElfSection implements Iterable<ElfSymbol> {
ElfSymbolTable(ElfReader reader, int offset) {
super(reader, offset);
}
public ElfSymbol symbol(int index) {
return new ElfSymbol(getSectionBuffer(), link().map(e -> (ElfStringTable) e), (int) (index * entrySize), reader);
}
public Optional<ElfSymbol> symbol(String name) {
return stream() //
.filter(n -> n.name().filter(s_name -> s_name.equals(name)).isPresent()) //
.findAny();
}
public Stream<ElfSymbol> stream() {
return IntStream.range(0, count()).mapToObj(i -> symbol(i));
}
@Override
public Iterator<ElfSymbol> iterator() {
return new Iterator<ElfSymbol>() {
private final int count = count();
private int index = 0;
@Override
public boolean hasNext() {
return index < count;
}
@Override
public ElfSymbol next() {
return symbol(index++);
}
@Override
public void remove() {
throw new UnsupportedOperationException();
}
};
}
}

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package de.orb.wiiu.rpxparser;
import lombok.Data;
@Data
public class RPLImport implements Comparable<RPLImport> {
private final String name;
private final String rplName;
@Override
public int compareTo(RPLImport o) {
return name.compareTo(o.name);
}
}

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package de.orb.wiiu.rpxparser;
import java.io.File;
import java.io.IOException;
import java.nio.ByteBuffer;
import java.nio.file.Files;
import java.util.Collections;
import java.util.List;
import java.util.Map;
import java.util.Optional;
import java.util.stream.Collectors;
import java.util.stream.Stream;
public class RPXFile {
final ElfReader elf_reader;
public static int MAX_FUNCTION_LENGTH_TO_COPY = 0;
private static final int MIN_SYMBOLS = 10;
public RPXFile(File f) throws IOException {
this(Files.readAllBytes(f.toPath()));
}
public RPXFile(byte[] data) throws IOException {
this(ByteBuffer.wrap(data));
}
public RPXFile(ByteBuffer buf) throws IOException {
buf.position(0);
elf_reader = new ElfReader(buf);
}
public List<ElfExport> getExports() {
return elf_reader.sections() //
.filter(section -> section instanceof ElfExportsTable) //
.flatMap(m -> ((ElfExportsTable) m).stream()) //
.collect(Collectors.toUnmodifiableList());
}
public Map<String, List<RPLImport>> getImports() {
return elf_reader.sections() //
.filter(section -> section instanceof ElfRelocationTable) // We want to check ElfRelocationTable sections
.flatMap(section -> ((ElfRelocationTable) section).stream()) // Get all relocations
.flatMap(r -> r.symbol().stream()) // Get symbols of relocations if existing
.filter(symbol -> symbol.section().filter(s -> (s instanceof ElfImportsTable)).isPresent()) // Only keep symbols of ElfImportsTable section
.map(symbol -> new RPLImport(symbol.name().orElseThrow(), ((ElfImportsTable) symbol.section().get()).rplname())) // Map to RPLImport
.distinct() //
.collect(Collectors.collectingAndThen( //
Collectors.groupingBy(RPLImport::getRplName, Collectors.toList()), // Group by RPLName
Collections::unmodifiableMap));
}
public Optional<byte[]> getFunctionData(ElfSymbol symbol) {
return symbol.section().flatMap(section -> getFunctionData(section, symbol.value() - section.address(), (int) symbol.size()));
}
public Optional<byte[]> getFunctionData(ElfSection section, long _offset, int length) {
if (_offset < section.address() || _offset > section.address() + section.size()) {
return Optional.empty();
}
long offsetInSection = _offset - section.address();
ByteBuffer buf = section.getSectionBuffer();
buf.position((int) offsetInSection);
byte[] data = new byte[(int) length];
buf.get(data, 0, (int) length);
return Optional.of(data);
}
public Optional<ElfSymbolTable> getSymbolTable() {
return elf_reader.section(".symtab").map(section -> (ElfSymbolTable) section);
}
public Optional<ElfSection> getTextSection() {
return elf_reader.section(".text");
}
public boolean hasSymbols() {
return getFunctionSymbolsTextStream().limit(MIN_SYMBOLS).count() == MIN_SYMBOLS;
}
public Stream<ElfSymbol> getSymbols() {
return getSymbolTable().map(st -> st.stream()).orElse(Stream.empty());
}
public Stream<ElfSymbol> getFunctionSymbolsTextStream() {
return getSymbols().filter(s -> s.type() == ElfSymbol.STT_FUNC) // We are only interested in functions
.filter(s -> !s.name().isEmpty()) // Not interested in functions with an empty name
.filter(s -> s.section().filter(m -> ".text".equals(m.name())).isPresent()); //
}
public List<ElfSymbol> getFunctionSymbolsText() {
return getFunctionSymbolsTextStream().collect(Collectors.toUnmodifiableList());
}
}