Lancaster-University
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DEMOS2-Auditor
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Code Issues Pull Requests Projects Releases Wiki Activity

giag

This commit is contained in:
Rumperuu 2018-09-19 08:39:16 +01:00
parent 0c350c8553
commit 06a3dc6256
7 changed files with 180 additions and 46 deletions
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31
app/src/main/java/uk/ac/lancaster/auditor/AuditActivity.kt Normal file
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@ -0,0 +1,31 @@
package uk.ac.lancaster.auditor
import android.content.Intent
import android.os.Bundle
import android.support.v7.app.AppCompatActivity
import android.widget.Button
import uk.ac.lancaster.auditor.barcode.BarcodeScanActivity
class AuditActivity : AppCompatActivity() {
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_audit)
findViewById<Button>(R.id.button).setOnClickListener {
val intent = Intent(applicationContext, ChooseRecordActivity::class.java)
startActivityForResult(intent, 1)
}
findViewById<Button>(R.id.button2).setOnClickListener {
val intent = Intent(applicationContext, ChooseRecordActivity::class.java)
startActivityForResult(intent, 1)
}
findViewById<Button>(R.id.button3).setOnClickListener {
val intent = Intent(applicationContext, ChooseRecordActivity::class.java)
startActivityForResult(intent, 1)
}
}
override fun onActivityResult(data: Intent?) {
}
}

20
app/src/main/java/uk/ac/lancaster/auditor/ChooseRecordActivity.kt Normal file
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@ -0,0 +1,20 @@
package uk.ac.lancaster.auditor
import android.os.Bundle
import android.support.v7.app.AppCompatActivity
import android.R.array
import android.widget.ArrayAdapter
class ChooseRecordActivity : AppCompatActivity() {
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_choose_record)
var fileList = getFilesDir().listFiles()
val adapter = ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, fileList)
(R.id.list).setAdapter(aa)
}
}

6
app/src/main/java/uk/ac/lancaster/auditor/MainActivity.kt
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@ -11,9 +11,13 @@ class MainActivity : AppCompatActivity() {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_main)
findViewById<Button>(R.id.scan_ballot_qr).setOnClickListener {
findViewById<Button>(R.id.cast_vote).setOnClickListener {
val intent = Intent(applicationContext, BarcodeScanActivity::class.java)
startActivity(intent)
}
findViewById<Button>(R.id.audit_election).setOnClickListener {
val intent = Intent(applicationContext, AuditActivity::class.java)
startActivity(intent)
}
}
}

89
app/src/main/java/uk/ac/lancaster/auditor/barcode/BarcodeScanActivity.kt
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@ -1,6 +1,7 @@
package uk.ac.lancaster.auditor.barcode
import android.content.Intent
import android.content.Context
import android.os.Bundle
import android.os.Environment
import android.support.v7.app.AppCompatActivity
@ -9,7 +10,7 @@ import android.util.Log
import android.widget.Button
import android.widget.TextView
import java.io.File
import java.io.FileWriter
import java.io.FileOutputStream
import com.google.android.gms.common.api.CommonStatusCodes
import com.google.android.gms.vision.barcode.Barcode
import uk.ac.lancaster.auditor.BallotVerifyActivity
@ -19,6 +20,18 @@ import uk.ac.lancaster.auditor.R
class BarcodeScanActivity : AppCompatActivity() {
private lateinit var mResultTextView: TextView
private var stage = 0
data class Record(val recordID: Int) {
var voterID: String = ""
var eventID: String = ""
var pollID: String = ""
var hashes: String = ""
var handle: String = ""
var hmac: String = ""
}
private val record = Record(0)
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
@ -38,50 +51,32 @@ class BarcodeScanActivity : AppCompatActivity() {
if (data != null) {
val barcode = data.getParcelableExtra<Barcode>(BarcodeCaptureActivity.BarcodeObject)
mResultTextView.text = barcode.displayValue
val handle = barcode.displayValue.split(";")[0]
val hmac = String(Base64.decode(barcode.displayValue.split(";")[1], Base64.DEFAULT))
// save the ballot
if (Environment.getExternalStorageState() == Environment.MEDIA_MOUNTED) {
val dir = File(Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOCUMENTS), "ballots")
if (!dir?.mkdirs()) {
Log.e(LOG_TAG, "Directory not created")
// Store the relevant info from whatever this QR code is for
when (stage) {
// Stage 0 is getting the voter ID, poll ID and event ID
0 -> {
val barcodeVal = barcode.displayValue.split(";")
record.voterID = barcodeVal[0]
record.eventID = barcodeVal[1]
record.pollID = barcodeVal[2]
}
val ballotFile = File(dir, "$handle.ballot")
if (ballotFile.exists()) {
ballotFile.delete()
// Stage 1 is getting the hashes of both ballots
1 -> {
record.hashes = barcode.displayValue
}
try {
val out = FileWriter(ballotFile)
out.write(handle)
out.flush()
out.close()
} catch (e: Exception) {
e.printStackTrace()
// Stage 2 is getting the handle of the unselected ballot on the server
2 -> {
record.handle = barcode.displayValue.split(";")[0]
record.hmac = String(Base64.decode(barcode.displayValue.split(";")[1], Base64.DEFAULT))
saveRecord()
finish()
}
val hmacFile = File(dir, "$handle.hmac")
if (hmacFile.exists()) {
hmacFile.delete()
else -> {
//something's gone wrong if this gets called
}
try {
val out = FileWriter(hmacFile)
out.write(hmac)
out.flush()
out.close()
} catch (e: Exception) {
e.printStackTrace()
}
}
//if some test of the QR = ballot handle
val intent = Intent(baseContext, BallotVerifyActivity::class.java)
intent.putExtra("ballotHandle", handle)
startActivity(intent)
stage++
} else
mResultTextView.setText(R.string.no_barcode_captured)
} else
@ -91,6 +86,22 @@ class BarcodeScanActivity : AppCompatActivity() {
super.onActivityResult(requestCode, resultCode, data)
}
private fun saveRecord() {
// save the ballot
val filename = record.handle
val fileContents = record.toString()
val outputStream: FileOutputStream
try {
outputStream = openFileOutput(filename, Context.MODE_PRIVATE)
outputStream.write(fileContents.toByteArray())
outputStream.close()
} catch (e: Exception) {
e.printStackTrace()
}
}
companion object {
private val LOG_TAG = MainActivity::class.java.simpleName
private val BARCODE_READER_REQUEST_CODE = 1

44
app/src/main/res/layout/activity_audit.xml Normal file
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@ -0,0 +1,44 @@
<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent">
<Button
android:id="@+id/button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginEnd="8dp"
android:layout_marginStart="8dp"
android:layout_marginTop="8dp"
android:text="Check ballot exist"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<Button
android:id="@+id/button2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginEnd="8dp"
android:layout_marginStart="8dp"
android:layout_marginTop="8dp"
android:text="Verify cast-as-recorded"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@+id/button" />
<Button
android:id="@+id/button3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginEnd="8dp"
android:layout_marginStart="8dp"
android:layout_marginTop="8dp"
android:text="Verify tallied-as-cast"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@+id/button2" />
</android.support.constraint.ConstraintLayout>

21
app/src/main/res/layout/activity_choose_record.xml Normal file
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@ -0,0 +1,21 @@
<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent">
<ListView
android:id="@+id/list"
android:layout_width="368dp"
android:layout_height="495dp"
android:layout_marginBottom="8dp"
android:layout_marginEnd="8dp"
android:layout_marginStart="8dp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="1.0"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
</android.support.constraint.ConstraintLayout>

15
app/src/main/res/layout/activity_main.xml
View File

@ -2,30 +2,33 @@
<android.support.constraint.ConstraintLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent">
<Button
android:id="@+id/scan_hash_qr"
android:id="@+id/cast_vote"
android:layout_width="218dp"
android:layout_height="64dp"
android:layout_marginEnd="8dp"
android:layout_marginStart="8dp"
android:layout_marginTop="8dp"
android:text="Scan Hash QR"
android:text="I'm casting a vote"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<Button
android:id="@+id/scan_ballot_qr"
android:id="@+id/audit_election"
android:layout_width="218dp"
android:layout_height="64dp"
android:layout_marginBottom="8dp"
android:layout_marginEnd="8dp"
android:layout_marginStart="8dp"
android:layout_marginTop="8dp"
android:text="Scan Ballot QR"
android:layout_marginTop="336dp"
android:text="I'm auditing an election"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@+id/scan_hash_qr" />
app:layout_constraintTop_toBottomOf="@+id/cast_vote" />
</android.support.constraint.ConstraintLayout>