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@MasterGamesMG
MasterGamesMG authored Feb 27, 2023
1 parent 04d768a commit 01b13aa
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39 changes: 39 additions & 0 deletions app/build.gradle
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plugins {
id 'com.android.application'
}

android {
namespace 'com.mastergames.elfreader'
compileSdk 33

defaultConfig {
applicationId "com.mastergames.elfreader"
minSdk 21
targetSdk 33
versionCode 1
versionName "1.0"

testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
}

buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
}
}
compileOptions {
sourceCompatibility JavaVersion.VERSION_1_8
targetCompatibility JavaVersion.VERSION_1_8
}
}

dependencies {

implementation 'androidx.appcompat:appcompat:1.6.1'
implementation 'com.google.android.material:material:1.8.0'
implementation 'androidx.constraintlayout:constraintlayout:2.1.4'
testImplementation 'junit:junit:4.13.2'
androidTestImplementation 'androidx.test.ext:junit:1.1.5'
androidTestImplementation 'androidx.test.espresso:espresso-core:3.5.1'
}
21 changes: 21 additions & 0 deletions app/proguard-rules.pro
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# Add project specific ProGuard rules here.
# You can control the set of applied configuration files using the
# proguardFiles setting in build.gradle.
#
# For more details, see
# http://developer.android.com/guide/developing/tools/proguard.html

# If your project uses WebView with JS, uncomment the following
# and specify the fully qualified class name to the JavaScript interface
# class:
#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
# public *;
#}

# Uncomment this to preserve the line number information for
# debugging stack traces.
#-keepattributes SourceFile,LineNumberTable

# If you keep the line number information, uncomment this to
# hide the original source file name.
#-renamesourcefileattribute SourceFile
26 changes: 26 additions & 0 deletions app/src/androidTest/java/com/mastergames/elfreader/ExampleInstrumentedTest.java
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package com.mastergames.elfreader;

import android.content.Context;

import androidx.test.platform.app.InstrumentationRegistry;
import androidx.test.ext.junit.runners.AndroidJUnit4;

import org.junit.Test;
import org.junit.runner.RunWith;

import static org.junit.Assert.*;

/**
* Instrumented test, which will execute on an Android device.
*
* @see <a href="http://d.android.com/tools/testing">Testing documentation</a>
*/
@RunWith(AndroidJUnit4.class)
public class ExampleInstrumentedTest {
@Test
public void useAppContext() {
// Context of the app under test.
Context appContext = InstrumentationRegistry.getInstrumentation().getTargetContext();
assertEquals("com.mastergames.elfreader", appContext.getPackageName());
}
}
30 changes: 30 additions & 0 deletions app/src/main/AndroidManifest.xml
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<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools">
<uses-permission android:name="android.permission.MANAGE_EXTERNAL_STORAGE"
tools:ignore="ScopedStorage" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.READ_PHONE_STATE" />

<application
android:allowBackup="true"
android:dataExtractionRules="@xml/data_extraction_rules"
android:fullBackupContent="@xml/backup_rules"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:supportsRtl="true"
android:theme="@style/Theme.ELFReader"
tools:targetApi="31">
<activity
android:name=".MainActivity"
android:exported="true">
<intent-filter>
<action android:name="android.intent.action.MAIN" />

<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>

</manifest>
189 changes: 189 additions & 0 deletions app/src/main/java/com/mastergames/elfreader/MainActivity.java
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package com.mastergames.elfreader;

import androidx.appcompat.app.AppCompatActivity;
import androidx.core.app.ActivityCompat;
import androidx.core.content.ContextCompat;

import android.annotation.SuppressLint;
import android.content.Context;
import android.content.pm.PackageManager;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.Toast;

import org.w3c.dom.Text;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.util.Arrays;

public class MainActivity extends AppCompatActivity {
private EditText directoryOfFile;
private Button readFile;
private TextView archiveIsElf;
private TextView architectureElf;
private TextView elfEndian;
private TextView elfABI;
private TextView elfVersion;
private TextView typeIsElfVersionABI;
private TextView typeIsElf;
private TextView typeIsElfPad;
private Button clearOutputs;

@SuppressLint("MissingInflatedId")
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);

directoryOfFile = findViewById(R.id.directoryoffile);
readFile = findViewById(R.id.button_readfile);
archiveIsElf = findViewById(R.id.isELForNot);
architectureElf = findViewById(R.id.archictureiself);
elfEndian = findViewById(R.id.elfEndian);
elfABI = findViewById(R.id.elfAbi);
elfVersion = findViewById(R.id.elfVersion);
typeIsElf = findViewById(R.id.typeiself);
clearOutputs = findViewById(R.id.clearoutput);

readFile.setOnClickListener(new View.OnClickListener() {
@SuppressLint("SetTextI18n")
@Override
public void onClick(View v) {
try {
// Open the .so file and create a FileInputStream
String fileDirectory = directoryOfFile.getText().toString();
File file = new File(fileDirectory);
FileInputStream fis = new FileInputStream(file);

// Reading the first 52 bytes to get the ELF header
byte[] header = new byte[52];
fis.read(header);

// Get the ELF identifier
String magic = new String(header, 0, 4);
if (!magic.equals("\u007fELF")) {
archiveIsElf.setText("EI_MAG : " + "Unknown");
} else {
archiveIsElf.setText("EI_MAG : " + "0x7fELF (ELF)");
}

// Get elf class (32-bit or 64-bit)
int elfClass = header[4];
if (elfClass == 1) {
architectureElf.setText("EI_CLASS : " + "ELFCLASS32 (32-bit)");
} else if (elfClass == 2) {
architectureElf.setText("EI_CLASS : " + "ELFCLASS64 (64-bit)");
} else {
architectureElf.setText("EI_CLASS : " + "ELFCLASSNONE (This class is invalid)");
}

// Get data encoding
int dataEncoding = header[5];
if (dataEncoding == 1) {
elfEndian.setText("EI_DATA : " + "ELFDATA2LSB (Little-endian)");
} else if (dataEncoding == 2) {
elfEndian.setText("EI_DATA : " + "ELFDATA2MSB (Big-endian)");
} else {
elfEndian.setText("EI_DATA : " + "ELFDATANONE (Unknown data format)");
}

// Get the ELF version
int version = header[6];
if (version == 1) {
elfVersion.setText("EI_VERSION : " + "EV_CURRENT (Current version)");
} else {
elfVersion.setText("EI_VERSION : " + "EV_NONE (Invalid version)");
}

// Get the value of the EI_OSABI
byte osAbi = header[7];
String osAbiStr;
switch (osAbi) {
case 0:
osAbiStr = "ELFOSABI_NONE/ELFOSABI_SYSV (UNIX System V ABI)";
break;
case 1:
osAbiStr = "ELFOSABI_HPUX (HP-UX ABI)";
break;
case 2:
osAbiStr = "ELFOSABI_NETBSD (NetBSD ABI)";
break;
case 3:
osAbiStr = "ELFOSABI_LINUX (Linux ABI)";
break;
case 6:
osAbiStr = "ELFOSABI_SOLARIS (Solaris ABI)";
break;
case 8:
osAbiStr = "ELFOSABI_IRIX (IRIX ABI)";
break;
case 9:
osAbiStr = "ELFOSABI_FREEBSD (FreeBSD ABI)";
break;
case 10:
osAbiStr = "ELFOSABI_TRU64 (TRU64 UNIX ABI)";
break;
case 97:
osAbiStr = "ELFOSABI_ARM (ARM architecture ABI)";
break;
case (byte) 255:
osAbiStr = "ELFOSABI_STANDALONE (Stand-alone (embedded) ABI)";
break;
default:
osAbiStr = "Unknown";
break;
}
elfABI.setText("EI_OSABI : " + osAbiStr);

// Get ELF file type
int type = header[16] + (header[17] << 8);
String typeStr = "";
switch (type) {
case 1:
typeStr = "ET_REL (A Relocatable file)";
break;
case 2:
typeStr = "ET_EXEC (An Executable file)";
break;
case 3:
typeStr = "ET_DYN (A Shared object file)";
break;
case 4:
typeStr = "ET_CORE (A Core file)";
break;
default:
typeStr = "ET_NONE (An unknown type)";
break;
}
typeIsElf.setText("ET : " + typeStr);

// Close FileInputStream
fis.close();
} catch (FileNotFoundException e) {
Toast.makeText(getApplicationContext(), "The file does not exist", Toast.LENGTH_LONG).show();
} catch (IOException e) {
Toast.makeText(getApplicationContext(), "Failed to read the file", Toast.LENGTH_LONG).show();
}
}
});

clearOutputs.setOnClickListener(new View.OnClickListener() {
@SuppressLint("SetTextI18n")
@Override
public void onClick(View v) {
archiveIsElf.setText("EI_MAG : ");
architectureElf.setText("EI_CLASS : ");
elfEndian.setText("EI_DATA : ");
elfVersion.setText("EI_VERSION : ");
elfABI.setText("EI_OSABI : ");
typeIsElf.setText("ET : ");
}
});
}
}
30 changes: 30 additions & 0 deletions app/src/main/res/drawable-v24/ic_launcher_foreground.xml
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<vector xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:aapt="http://schemas.android.com/aapt"
android:width="108dp"
android:height="108dp"
android:viewportWidth="108"
android:viewportHeight="108">
<path android:pathData="M31,63.928c0,0 6.4,-11 12.1,-13.1c7.2,-2.6 26,-1.4 26,-1.4l38.1,38.1L107,108.928l-32,-1L31,63.928z">
<aapt:attr name="android:fillColor">
<gradient
android:endX="85.84757"
android:endY="92.4963"
android:startX="42.9492"
android:startY="49.59793"
android:type="linear">
<item
android:color="#44000000"
android:offset="0.0" />
<item
android:color="#00000000"
android:offset="1.0" />
</gradient>
</aapt:attr>
</path>
<path
android:fillColor="#FFFFFF"
android:fillType="nonZero"
android:pathData="M65.3,45.828l3.8,-6.6c0.2,-0.4 0.1,-0.9 -0.3,-1.1c-0.4,-0.2 -0.9,-0.1 -1.1,0.3l-3.9,6.7c-6.3,-2.8 -13.4,-2.8 -19.7,0l-3.9,-6.7c-0.2,-0.4 -0.7,-0.5 -1.1,-0.3C38.8,38.328 38.7,38.828 38.9,39.228l3.8,6.6C36.2,49.428 31.7,56.028 31,63.928h46C76.3,56.028 71.8,49.428 65.3,45.828zM43.4,57.328c-0.8,0 -1.5,-0.5 -1.8,-1.2c-0.3,-0.7 -0.1,-1.5 0.4,-2.1c0.5,-0.5 1.4,-0.7 2.1,-0.4c0.7,0.3 1.2,1 1.2,1.8C45.3,56.528 44.5,57.328 43.4,57.328L43.4,57.328zM64.6,57.328c-0.8,0 -1.5,-0.5 -1.8,-1.2s-0.1,-1.5 0.4,-2.1c0.5,-0.5 1.4,-0.7 2.1,-0.4c0.7,0.3 1.2,1 1.2,1.8C66.5,56.528 65.6,57.328 64.6,57.328L64.6,57.328z"
android:strokeWidth="1"
android:strokeColor="#00000000" />
</vector>
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