Password generator implemented

- Passwords also get's checked if it's compromised

app/build.gradle

@@ -41,6 +41,9 @@ dependencies {
     implementation "org.jetbrains.kotlin:kotlin-stdlib:$kotlin_version"
     implementation 'androidx.core:core-ktx:1.3.0'
 
+    /* Password strengh library */
+    compile 'com.nulab-inc:zxcvbn:1.3.0'
+
     implementation "org.jetbrains.kotlinx:kotlinx-coroutines-core:1.3.7"
     implementation "org.jetbrains.kotlinx:kotlinx-coroutines-android:1.3.7"
 

app/src/main/java/com/github/mondei1/offpass/CreateActivity.kt

@@ -27,12 +27,16 @@ import com.google.zxing.BarcodeFormat
 import com.google.zxing.integration.android.IntentIntegrator
 import com.google.zxing.integration.android.IntentResult
 import com.journeyapps.barcodescanner.BarcodeEncoder
+import com.nulabinc.zxcvbn.Zxcvbn
 import dev.turingcomplete.kotlinonetimepassword.GoogleAuthenticator
 import kotlinx.android.synthetic.main.activity_create.*
+import kotlinx.android.synthetic.main.activity_generator.*
+import kotlinx.android.synthetic.main.activity_generator.view.*
 import kotlinx.android.synthetic.main.dialogpassphrase.view.*
 import kotlinx.coroutines.*
 import java.io.ByteArrayOutputStream
 import java.lang.IllegalArgumentException
+import java.lang.StringBuilder
 import java.util.*
 import kotlin.collections.ArrayList
 
@@ -168,6 +172,7 @@ class CreateActivity : AppCompatActivity() {
             finish()
         }
         print_button.setOnClickListener {
+            fun continueAfterCheck() {
                 // Ask user for passhprase and hint
                 val builder = AlertDialog.Builder(ContextThemeWrapper(this, R.style.PassphraseDialog))
 
@@ -214,8 +219,23 @@ class CreateActivity : AppCompatActivity() {
                     })
                     show()
                 }
+            }
 
+            // First check if entered password is compromised
+            if (passwordKnown(password_input.text.toString())) {
+                val builder = AlertDialog.Builder(ContextThemeWrapper(this, R.style.ErrorDialog))
 
+                with(builder) {
+                    setTitle("Password compromised!")
+                    setMessage("Your password is weak and should be changed as it got found in a list of weak passwords.")
+                    setPositiveButton("I'll change it", DialogInterface.OnClickListener { dialogInterface, i ->
+                    })
+                    setNegativeButton("I don't care", DialogInterface.OnClickListener { dialogInterface, i ->
+                        continueAfterCheck()
+                    })
+                    show()
+                }
+            }
         }
         password_hide.setOnClickListener {
             if (password_input.transformationMethod == HideReturnsTransformationMethod.getInstance()) {
@@ -227,6 +247,121 @@ class CreateActivity : AppCompatActivity() {
 
             }
         }
+        password_random.setOnClickListener {
+            val builder = AlertDialog.Builder(ContextThemeWrapper(this, R.style.PassphraseGenerator))
+
+            with (builder) {
+                val layout = layoutInflater.inflate(R.layout.activity_generator, null)
+                val zxcvbn = Zxcvbn()
+                var length: Int = 8
+                setTitle("Generate password")
+                setView(layout)
+
+                fun newPassword() {
+                    var combined = ""
+                    val upper_case = "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
+                    val lower_case = "abcdefghijklmnopqrstuvwxyz"
+                    val speicals = "!\";#$%&'()*+,-./:;<=>?@[/]^_`"
+                    val digits = "1234567890"
+                    val emojis = arrayOf(0x1F600, 0x1F603, 0x1F601, 0x1F911, 0x1F910, 0x1F637, 0x1F47D, 0x1F480, 0x1F916)
+                    val rand: Random = Random()
+
+                    if (layout.AZ.isChecked) combined += upper_case
+                    if (layout.az.isChecked) combined += lower_case
+                    if (layout.zero_nine.isChecked) combined += digits
+                    if (layout.emojis.isChecked) {
+                        emojis.forEach {
+                            combined += String(Character.toChars(it))
+                        }
+                    }
+                    if (layout.special.isChecked) combined += speicals
+
+                    val sb: StringBuilder = StringBuilder(length)
+                    for (x in 1..length) {
+                        sb.append(combined[rand.nextInt(combined.length)])
+                    }
+
+                    // Adapt text size
+                    if (sb.length > 10) {
+                        layout.random_string.textSize = 24.0f
+                    } else if (sb.length > 16) {
+                        layout.random_string.textSize = 18.0f
+                    }
+
+                    // Measure strengh
+                    layout.progressBar.progress = zxcvbn.measure(sb.toString())
+                        .score
+
+                    if (layout.progressBar.progress == 1) {
+                        layout.progressBar.progressTintList = ColorStateList.valueOf(Color.RED)
+                    } else if (layout.progressBar.progress == 2) {
+                        layout.progressBar.progressTintList = ColorStateList.valueOf(Color.YELLOW)
+                    } else if (layout.progressBar.progress == 3) {
+                        layout.progressBar.progressTintList = ColorStateList.valueOf(Color.GREEN)
+                    } else {
+                        layout.progressBar.progressTintList = ColorStateList.valueOf(Color.GREEN)
+                    }
+
+                    layout.random_string.setText(sb.toString())
+                }
+
+                // Initial set
+                layout.length_label.setText(length.toString())
+                newPassword()
+
+                // Add length
+                layout.add_button.setOnClickListener {
+                    length++
+                    layout.length_label.setText(length.toString())
+                    newPassword()
+                }
+                layout.add_button.setOnLongClickListener {
+                    length += 10
+                    layout.length_label.setText(length.toString())
+                    newPassword()
+
+                    true
+                }
+
+                // Subtract length
+                layout.subtract_button.setOnClickListener {
+                    length--
+                    layout.length_label.setText(length.toString())
+                    newPassword()
+                }
+                layout.subtract_button.setOnLongClickListener {
+                    length -= 10
+                    layout.length_label.setText(length.toString())
+                    newPassword()
+
+                    true
+                }
+
+                // Refresh
+                layout.refresh_button.setOnClickListener {
+                    newPassword()
+                }
+
+                // Copy password
+                layout.copy_button.setOnClickListener {
+                    // Copy code if already scanend
+                    val clip: ClipboardManager = getSystemService(Context.CLIPBOARD_SERVICE) as ClipboardManager
+                    clip.setPrimaryClip(ClipData.newPlainText("Random password", layout.random_string.text.toString()))
+                    Toast.makeText(applicationContext, "Copied!", Toast.LENGTH_SHORT).show()
+                }
+
+                setPositiveButton("Use this",
+                    DialogInterface.OnClickListener { dialog, id ->
+                        password_input.setText(layout.random_string.text)
+                    })
+                setNegativeButton("Go back",
+                    DialogInterface.OnClickListener { dialog, id ->
+                        dialog.dismiss()
+                    })
+                show()
+            }
+
+        }
 
         fa_input.isFocusable = false
 

app/src/main/java/com/github/mondei1/offpass/GeneratorActivity.kt

@@ -2,10 +2,27 @@ package com.github.mondei1.offpass
 
 import androidx.appcompat.app.AppCompatActivity
 import android.os.Bundle
+import android.util.Log
+import kotlinx.android.synthetic.main.activity_generator.*
 
 class GeneratorActivity : AppCompatActivity() {
+    var length: Int = 12
+
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
         setContentView(R.layout.activity_generator)
+
+        length_label.setText(length.toString())
+        Log.i("Generator", "Length: $length")
+        add_button.setOnClickListener {
+            Log.i("Generator", "Length: $length")
+            length++
+            length_label.setText(length.toString())
+        }
+        subtract_button.setOnClickListener {
+            Log.i("Generator", "Length: $length")
+            length--
+            length_label.setText(length.toString())
+        }
     }
 }

app/src/main/res/layout/activity_generator.xml

@@ -1,9 +1,171 @@
 <?xml version="1.0" encoding="utf-8"?>
-<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+<LinearLayout 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"
+    android:layout_width="wrap_content"
+    android:layout_height="wrap_content"
     tools:context=".GeneratorActivity">
 
-</androidx.constraintlayout.widget.ConstraintLayout>
+    <androidx.constraintlayout.widget.ConstraintLayout
+        android:layout_width="350dp"
+        android:layout_height="wrap_content"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent">
+
+        <ProgressBar
+            android:id="@+id/progressBar"
+            style="?android:attr/progressBarStyleHorizontal"
+            android:layout_width="256dp"
+            android:layout_height="10dp"
+            android:layout_marginStart="80dp"
+            android:layout_marginTop="100dp"
+            android:layout_marginEnd="80dp"
+            android:progress="2"
+            android:min="0"
+            android:max="4"
+            app:layout_constraintEnd_toEndOf="parent"
+            app:layout_constraintStart_toStartOf="parent"
+            app:layout_constraintTop_toTopOf="parent" />
+
+        <TextView
+            android:id="@+id/random_string"
+            android:layout_width="201dp"
+            android:layout_height="wrap_content"
+            android:layout_marginStart="80dp"
+            android:layout_marginEnd="80dp"
+            android:layout_marginBottom="10dp"
+            android:gravity="center_vertical"
+            android:text="D%g$MA0H8d"
+            android:textAlignment="center"
+            android:textAppearance="@style/TextAppearance.AppCompat.Body1"
+            android:textSize="30sp"
+            app:layout_constraintBottom_toTopOf="@+id/progressBar"
+            app:layout_constraintEnd_toEndOf="parent"
+            app:layout_constraintStart_toStartOf="parent" />
+
+        <ImageButton
+            android:id="@+id/refresh_button"
+            android:layout_width="32dp"
+            android:layout_height="32dp"
+            android:layout_marginEnd="16dp"
+            android:layout_marginBottom="16dp"
+            android:background="#00FFFFFF"
+            app:layout_constraintBottom_toTopOf="@+id/progressBar"
+            app:layout_constraintEnd_toStartOf="@+id/random_string"
+            app:srcCompat="@drawable/ic_refresh" />
+
+        <ImageButton
+            android:id="@+id/copy_button"
+            android:layout_width="32dp"
+            android:layout_height="32dp"
+            android:layout_marginStart="16dp"
+            android:layout_marginBottom="16dp"
+            android:background="#00FFFFFF"
+            app:layout_constraintBottom_toTopOf="@+id/progressBar"
+            app:layout_constraintStart_toEndOf="@+id/random_string"
+            app:srcCompat="@drawable/ic_content_copy" />
+
+        <LinearLayout
+            android:id="@+id/password_length_container"
+            android:layout_width="142dp"
+            android:layout_height="45dp"
+            android:layout_marginStart="1dp"
+            android:layout_marginTop="24dp"
+            android:layout_marginEnd="1dp"
+            android:orientation="horizontal"
+            app:layout_constraintEnd_toEndOf="parent"
+            app:layout_constraintHorizontal_bias="0.498"
+            app:layout_constraintStart_toStartOf="parent"
+            app:layout_constraintTop_toBottomOf="@+id/progressBar">
+
+            <ImageButton
+                android:id="@+id/subtract_button"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:layout_marginTop="7dp"
+                android:layout_weight="1"
+                android:background="#00FFFFFF"
+                app:srcCompat="@drawable/ic_remove" />
+
+            <TextView
+                android:id="@+id/length_label"
+                android:layout_width="45dp"
+                android:layout_height="match_parent"
+                android:layout_weight="1"
+                android:fontFamily="sans-serif-light"
+                android:gravity="center_horizontal|center_vertical"
+                android:text="0"
+                android:textColor="@color/colorPrimaryDark"
+                android:textSize="24sp" />
+
+            <ImageButton
+                android:id="@+id/add_button"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:layout_marginTop="7dp"
+                android:layout_weight="1"
+                android:background="#00FFFFFF"
+                app:srcCompat="@drawable/ic_add" />
+
+        </LinearLayout>
+
+        <CheckBox
+            android:id="@+id/AZ"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_marginStart="32dp"
+            android:layout_marginTop="32dp"
+            android:checked="true"
+            android:text="A-Z"
+            android:textSize="20sp"
+            app:layout_constraintStart_toStartOf="parent"
+            app:layout_constraintTop_toBottomOf="@+id/password_length_container" />
+
+        <CheckBox
+            android:id="@+id/az"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_marginStart="32dp"
+            android:layout_marginTop="8dp"
+            android:checked="true"
+            android:text="a-z"
+            android:textSize="20sp"
+            app:layout_constraintStart_toStartOf="parent"
+            app:layout_constraintTop_toBottomOf="@+id/AZ" />
+
+        <CheckBox
+            android:id="@+id/zero_nine"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_marginStart="32dp"
+            android:layout_marginTop="8dp"
+            android:checked="true"
+            android:text="0-9"
+            android:textSize="20sp"
+            app:layout_constraintStart_toStartOf="parent"
+            app:layout_constraintTop_toBottomOf="@+id/az" />
+
+        <CheckBox
+            android:id="@+id/special"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_marginStart="32dp"
+            android:layout_marginTop="8dp"
+            android:checked="true"
+            android:text="!&quot;#$%'()*+"
+            android:textSize="20sp"
+            app:layout_constraintStart_toStartOf="parent"
+            app:layout_constraintTop_toBottomOf="@+id/zero_nine" />
+
+        <CheckBox
+            android:id="@+id/emojis"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_marginStart="32dp"
+            android:layout_marginTop="8dp"
+            android:text="😃👽😺👋"
+            android:textSize="20sp"
+            app:layout_constraintStart_toStartOf="parent"
+            app:layout_constraintTop_toBottomOf="@+id/special" />
+    </androidx.constraintlayout.widget.ConstraintLayout>
+</LinearLayout>

app/src/main/res/layout/activity_view.xml

@@ -22,7 +22,9 @@
     <LinearLayout
         android:layout_width="match_parent"
         android:layout_height="0dp"
-        android:orientation="horizontal">
+        android:orientation="horizontal"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent">
 
         <ImageButton
             android:id="@+id/back"

app/src/main/res/values/styles.xml

@@ -19,4 +19,11 @@
         <item name="android:textStyle">bold</item>
         <item name="android:background">@android:color/holo_red_light</item>
     </style>
+    <style name="PassphraseGenerator" parent="@android:style/Theme.Material.Dialog">
+        <item name="android:paddingTop">0dp</item>
+        <item name="android:layout_marginTop">0dp</item>
+        <item name="android:textColor">@color/colorPrimaryDark</item>
+        <item name="background">@color/colorPrimary</item>
+        <item name="android:textStyle">bold</item>
+    </style>
 </resources>