Initial commit: Pezkuwi Wallet Android

Security hardened release:
- Code obfuscation enabled (minifyEnabled=true, shrinkResources=true)
- Sensitive files excluded (google-services.json, keystores)
- Branch.io key moved to BuildConfig placeholder
- Updated dependencies: OkHttp 4.12.0, Gson 2.10.1, BouncyCastle 1.77
- Comprehensive ProGuard rules for crypto wallet
- Navigation 2.7.7, Lifecycle 2.7.0, ConstraintLayout 2.1.4

feature-external-sign-api/.gitignore

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+/build

feature-external-sign-api/build.gradle

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+apply plugin: 'kotlin-parcelize'
+
+android {
+    namespace 'io.novafoundation.nova.feature_external_sign_api'
+
+
+    buildFeatures {
+        viewBinding true
+    }
+}
+
+dependencies {
+    implementation project(':feature-account-api')
+    implementation project(':common')
+
+    implementation coroutinesDep
+
+    implementation androidDep
+    implementation materialDep
+    implementation constraintDep
+
+    testImplementation jUnitDep
+    testImplementation mockitoDep
+}

feature-external-sign-api/proguard-rules.pro

@@ -0,0 +1,21 @@
+# 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

feature-external-sign-api/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">
+
+</manifest>

feature-external-sign-api/src/main/java/io/novafoundation/nova/feature_external_sign_api/di/ExternalSignFeatureApi.kt

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+package io.novafoundation.nova.feature_external_sign_api.di
+
+import io.novafoundation.nova.feature_external_sign_api.domain.sign.evm.EvmTypedMessageParser
+
+interface ExternalSignFeatureApi {
+
+    val evmTypedMessageParser: EvmTypedMessageParser
+}

feature-external-sign-api/src/main/java/io/novafoundation/nova/feature_external_sign_api/domain/sign/evm/EvmTypedMessageParser.kt

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+package io.novafoundation.nova.feature_external_sign_api.domain.sign.evm
+
+import io.novafoundation.nova.feature_external_sign_api.model.signPayload.evm.EvmTypedMessage
+
+interface EvmTypedMessageParser {
+
+    fun parseEvmTypedMessage(message: String): EvmTypedMessage
+}

feature-external-sign-api/src/main/java/io/novafoundation/nova/feature_external_sign_api/model/ExternalSignCommunicator.kt

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+package io.novafoundation.nova.feature_external_sign_api.model
+
+import android.os.Parcelable
+import io.novafoundation.nova.common.base.errors.SigningCancelledException
+import io.novafoundation.nova.common.navigation.InterScreenRequester
+import io.novafoundation.nova.common.navigation.InterScreenResponder
+import io.novafoundation.nova.feature_external_sign_api.model.ExternalSignCommunicator.Response
+import io.novafoundation.nova.feature_external_sign_api.model.signPayload.ExternalSignPayload
+import kotlinx.parcelize.Parcelize
+import kotlinx.coroutines.flow.first
+
+interface ExternalSignRequester : InterScreenRequester<ExternalSignPayload, Response>
+
+interface ExternalSignResponder : InterScreenResponder<ExternalSignPayload, Response>
+
+interface ExternalSignCommunicator : ExternalSignRequester, ExternalSignResponder {
+
+    sealed class Response : Parcelable {
+
+        abstract val requestId: String
+
+        @Parcelize
+        class Rejected(override val requestId: String) : Response()
+
+        @Parcelize
+        class Signed(override val requestId: String, val signature: String, val modifiedTransaction: String? = null) : Response()
+
+        @Parcelize
+        class Sent(override val requestId: String, val txHash: String) : Response()
+
+        @Parcelize
+        class SigningFailed(override val requestId: String, val shouldPresent: Boolean = true) : Response()
+    }
+}
+
+suspend fun ExternalSignRequester.awaitConfirmation(request: ExternalSignPayload): Response {
+    openRequest(request)
+
+    return responseFlow.first { it.requestId == request.signRequest.id }
+}
+
+fun Throwable.failedSigningIfNotCancelled(requestId: String) = if (this is SigningCancelledException) {
+    null
+} else {
+    Response.SigningFailed(requestId)
+}

feature-external-sign-api/src/main/java/io/novafoundation/nova/feature_external_sign_api/model/signPayload/ExternalSignPayload.kt

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+package io.novafoundation.nova.feature_external_sign_api.model.signPayload
+
+import android.os.Parcelable
+import io.novafoundation.nova.feature_external_sign_api.model.signPayload.evm.EvmSignPayload
+import io.novafoundation.nova.feature_external_sign_api.model.signPayload.polkadot.PolkadotSignPayload
+import kotlinx.parcelize.Parcelize
+
+@Parcelize
+class ExternalSignPayload(
+    val signRequest: ExternalSignRequest,
+    val dappMetadata: SigningDappMetadata?,
+    val wallet: ExternalSignWallet
+) : Parcelable
+
+@Parcelize
+class SigningDappMetadata(
+    val icon: String?,
+    val name: String?,
+    val url: String
+) : Parcelable
+
+sealed class ExternalSignWallet : Parcelable {
+
+    @Parcelize
+    object Current : ExternalSignWallet()
+
+    @Parcelize
+    class WithId(val metaId: Long) : ExternalSignWallet()
+}
+
+sealed interface ExternalSignRequest : Parcelable {
+
+    val id: String
+
+    @Parcelize
+    class Polkadot(override val id: String, val payload: PolkadotSignPayload) : ExternalSignRequest
+
+    @Parcelize
+    class Evm(override val id: String, val payload: EvmSignPayload) : ExternalSignRequest
+}

feature-external-sign-api/src/main/java/io/novafoundation/nova/feature_external_sign_api/model/signPayload/evm/EvmChain.kt

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+package io.novafoundation.nova.feature_external_sign_api.model.signPayload.evm
+
+import android.os.Parcelable
+import io.novafoundation.nova.common.utils.Precision
+import io.novafoundation.nova.common.utils.TokenSymbol
+import kotlinx.parcelize.Parcelize
+
+@Parcelize
+data class EvmChain(
+    val chainId: String,
+    val chainName: String,
+    val nativeCurrency: NativeCurrency,
+    val rpcUrl: String,
+    val iconUrl: String?
+) : Parcelable {
+
+    @Parcelize
+    class NativeCurrency(
+        val name: String,
+        val symbol: TokenSymbol,
+        val decimals: Precision
+    ) : Parcelable
+}

feature-external-sign-api/src/main/java/io/novafoundation/nova/feature_external_sign_api/model/signPayload/evm/EvmPersonalSignMessage.kt

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+package io.novafoundation.nova.feature_external_sign_api.model.signPayload.evm
+
+import android.os.Parcelable
+import kotlinx.parcelize.Parcelize
+
+@Parcelize
+class EvmPersonalSignMessage(
+    val data: String
+) : Parcelable

feature-external-sign-api/src/main/java/io/novafoundation/nova/feature_external_sign_api/model/signPayload/evm/EvmSignPayload.kt

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+package io.novafoundation.nova.feature_external_sign_api.model.signPayload.evm
+
+import android.os.Parcelable
+import kotlinx.parcelize.Parcelize
+
+sealed class EvmSignPayload : Parcelable {
+
+    abstract val originAddress: String
+
+    @Parcelize
+    class ConfirmTx(
+        val transaction: EvmTransaction,
+        override val originAddress: String,
+        val chainSource: EvmChainSource,
+        val action: Action,
+    ) : EvmSignPayload() {
+
+        enum class Action {
+            SIGN, SEND
+        }
+    }
+
+    @Parcelize
+    class SignTypedMessage(
+        val message: EvmTypedMessage,
+        override val originAddress: String,
+    ) : EvmSignPayload()
+
+    @Parcelize
+    class PersonalSign(
+        val message: EvmPersonalSignMessage,
+        override val originAddress: String,
+    ) : EvmSignPayload()
+}
+
+@Parcelize
+class EvmChainSource(val evmChainId: Int, val unknownChainOptions: UnknownChainOptions) : Parcelable {
+
+    sealed class UnknownChainOptions : Parcelable {
+
+        @Parcelize
+        object MustBeKnown : UnknownChainOptions()
+
+        @Parcelize
+        class WithFallBack(val evmChain: EvmChain) : UnknownChainOptions()
+    }
+}

feature-external-sign-api/src/main/java/io/novafoundation/nova/feature_external_sign_api/model/signPayload/evm/EvmTransaction.kt

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+package io.novafoundation.nova.feature_external_sign_api.model.signPayload.evm
+
+import android.os.Parcelable
+import kotlinx.parcelize.Parcelize
+
+sealed class EvmTransaction : Parcelable {
+    @Parcelize
+    class Struct(
+        val gas: String?,
+        val gasPrice: String?,
+        val from: String,
+        val to: String,
+        val data: String?,
+        val value: String?,
+        val nonce: String?,
+    ) : EvmTransaction()
+
+    @Parcelize
+    class Raw(val rawContent: String) : EvmTransaction()
+}

feature-external-sign-api/src/main/java/io/novafoundation/nova/feature_external_sign_api/model/signPayload/evm/EvmTypedMessage.kt

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+package io.novafoundation.nova.feature_external_sign_api.model.signPayload.evm
+
+import android.os.Parcelable
+import kotlinx.parcelize.Parcelize
+
+@Parcelize
+class EvmTypedMessage(
+    val data: String,
+    val raw: String?
+) : Parcelable

feature-external-sign-api/src/main/java/io/novafoundation/nova/feature_external_sign_api/model/signPayload/polkadot/PolkadotSignPayload.kt

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+package io.novafoundation.nova.feature_external_sign_api.model.signPayload.polkadot
+
+import android.os.Parcelable
+import kotlinx.parcelize.Parcelize
+
+sealed class PolkadotSignPayload : Parcelable {
+
+    abstract val address: String
+
+    @Parcelize
+    class Json(
+        override val address: String,
+        val blockHash: String,
+        val blockNumber: String,
+        val era: String,
+        val genesisHash: String,
+        val method: String,
+        val nonce: String,
+        val specVersion: String,
+        val tip: String,
+        val transactionVersion: String,
+        val metadataHash: String?,
+        val withSignedTransaction: Boolean?,
+        val signedExtensions: List<String>,
+        val assetId: String?,
+        val version: Int
+    ) : PolkadotSignPayload()
+
+    @Parcelize
+    class Raw(
+        val data: String,
+        override val address: String,
+        val type: String?
+    ) : PolkadotSignPayload()
+}
+
+fun PolkadotSignPayload.maybeSignExtrinsic(): PolkadotSignPayload.Json? = this as? PolkadotSignPayload.Json
+
+fun PolkadotSignPayload.genesisHash(): String? = (this as? PolkadotSignPayload.Json)?.genesisHash

feature-external-sign-api/src/main/java/io/novafoundation/nova/feature_external_sign_api/model/signPayload/polkadot/PolkadotSignerResult.kt

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+package io.novafoundation.nova.feature_external_sign_api.model.signPayload.polkadot
+
+class PolkadotSignerResult(val id: String, val signature: String, val signedTransaction: String?)

feature-external-sign-api/src/main/java/io/novafoundation/nova/feature_external_sign_api/presentation/dapp/Icon.kt

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+package io.novafoundation.nova.feature_external_sign_api.presentation.dapp
+
+import android.widget.ImageView
+import coil.ImageLoader
+import coil.load
+import io.novafoundation.nova.feature_external_sign_api.R
+
+fun ImageView.showDAppIcon(
+    url: String?,
+    imageLoader: ImageLoader
+) {
+    load(url, imageLoader) {
+        fallback(R.drawable.ic_earth)
+        error(R.drawable.ic_earth)
+    }
+}

feature-external-sign-api/src/main/java/io/novafoundation/nova/feature_external_sign_api/presentation/externalSign/AuthorizeDappBottomSheet.kt

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+package io.novafoundation.nova.feature_external_sign_api.presentation.externalSign
+
+import android.content.Context
+import android.os.Bundle
+import android.view.LayoutInflater
+import coil.ImageLoader
+import io.novafoundation.nova.common.di.FeatureUtils
+import io.novafoundation.nova.common.utils.postToSelf
+import io.novafoundation.nova.common.utils.sequrity.AutomaticInteractionGate
+import io.novafoundation.nova.common.utils.sequrity.awaitInteractionAllowed
+import io.novafoundation.nova.feature_account_api.presenatation.account.wallet.WalletModel
+import io.novafoundation.nova.feature_account_api.view.showWallet
+import io.novafoundation.nova.feature_external_sign_api.databinding.BottomSheetConfirmAuthorizeBinding
+import io.novafoundation.nova.feature_external_sign_api.presentation.dapp.showDAppIcon
+
+import kotlinx.coroutines.launch
+
+class AuthorizeDappBottomSheet(
+    context: Context,
+    private val payload: Payload,
+    onConfirm: () -> Unit,
+    onDeny: () -> Unit,
+) : ConfirmDAppActionBottomSheet(
+    context = context,
+    onConfirm = onConfirm,
+    onDeny = onDeny
+) {
+
+    class Payload(
+        val dAppUrl: String,
+        val title: String,
+        val dAppIconUrl: String?,
+        val walletModel: WalletModel,
+    )
+
+    private val interactionGate: AutomaticInteractionGate
+
+    private val imageLoader: ImageLoader
+
+    override val contentBinder = BottomSheetConfirmAuthorizeBinding.inflate(LayoutInflater.from(context))
+
+    init {
+        FeatureUtils.getCommonApi(context).let { api ->
+            interactionGate = api.automaticInteractionGate
+            imageLoader = api.imageLoader()
+        }
+    }
+
+    override fun show() {
+        launch {
+            interactionGate.awaitInteractionAllowed()
+
+            super.show()
+        }
+    }
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+
+        contentBinder.confirmAuthorizeDappIcon.showDAppIcon(payload.dAppIconUrl, imageLoader)
+        contentBinder.confirmAuthorizeDappWallet.postToSelf { showWallet(payload.walletModel) }
+
+        contentBinder.confirmAuthorizeDappTitle.text = payload.title
+        contentBinder.confirmAuthorizeDappDApp.postToSelf { showValue(payload.dAppUrl) }
+    }
+}

feature-external-sign-api/src/main/java/io/novafoundation/nova/feature_external_sign_api/presentation/externalSign/ConfirmDAppActionBottomSheet.kt

@@ -0,0 +1,33 @@
+package io.novafoundation.nova.feature_external_sign_api.presentation.externalSign
+
+import android.content.Context
+import android.os.Bundle
+import android.view.LayoutInflater
+import androidx.annotation.CallSuper
+import androidx.viewbinding.ViewBinding
+import io.novafoundation.nova.common.utils.DialogExtensions
+import io.novafoundation.nova.common.view.bottomSheet.BaseBottomSheet
+import io.novafoundation.nova.feature_external_sign_api.databinding.BottomSheetConfirmDappActionBinding
+
+abstract class ConfirmDAppActionBottomSheet(
+    context: Context,
+    private val onConfirm: () -> Unit,
+    private val onDeny: () -> Unit
+) : BaseBottomSheet<BottomSheetConfirmDappActionBinding>(context), DialogExtensions {
+
+    override val binder: BottomSheetConfirmDappActionBinding = BottomSheetConfirmDappActionBinding.inflate(LayoutInflater.from(context))
+
+    abstract val contentBinder: ViewBinding
+
+    @CallSuper
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+
+        setCancelable(false)
+
+        binder.confirmInnerContent.addView(contentBinder.root)
+
+        binder.confirmDAppActionAllow.setDismissingClickListener { onConfirm() }
+        binder.confirmDAppActionReject.setDismissingClickListener { onDeny() }
+    }
+}

feature-external-sign-api/src/main/res/layout/bottom_sheet_confirm_authorize.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<ScrollView 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:overScrollMode="never"
+    android:scrollbars="none"
+    android:layout_height="match_parent"
+    tools:background="@color/bottom_sheet_background">
+
+    <androidx.constraintlayout.widget.ConstraintLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        tools:background="@color/bottom_sheet_background">
+
+        <ImageView
+            android:id="@+id/confirmAuthorizeNovaIcon"
+            style="@style/Widget.Nova.Icon.Big"
+            android:layout_marginTop="20dp"
+            android:padding="16dp"
+            android:src="@drawable/ic_pezkuwi_logo"
+            app:layout_constraintEnd_toStartOf="@+id/confirmAuthorizeNovaArrow"
+            app:layout_constraintHorizontal_bias="0.5"
+            app:layout_constraintHorizontal_chainStyle="packed"
+            app:layout_constraintStart_toStartOf="parent"
+            app:layout_constraintTop_toTopOf="parent" />
+
+        <ImageView
+            android:id="@+id/confirmAuthorizeNovaArrow"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_marginStart="16dp"
+            android:layout_marginEnd="16dp"
+            android:src="@drawable/ic_bidirectonal"
+            app:layout_constraintBottom_toBottomOf="@+id/confirmAuthorizeNovaIcon"
+            app:layout_constraintEnd_toStartOf="@+id/confirmAuthorizeDappIcon"
+            app:layout_constraintHorizontal_bias="0.5"
+            app:layout_constraintStart_toEndOf="@+id/confirmAuthorizeNovaIcon"
+            app:layout_constraintTop_toTopOf="@+id/confirmAuthorizeNovaIcon"
+            app:tint="@color/icon_secondary" />
+
+        <ImageView
+            android:id="@+id/confirmAuthorizeDappIcon"
+            style="@style/Widget.Nova.Icon.Big"
+            android:layout_marginTop="20dp"
+            app:layout_constraintEnd_toEndOf="parent"
+            app:layout_constraintHorizontal_bias="0.5"
+            app:layout_constraintStart_toEndOf="@+id/confirmAuthorizeNovaArrow"
+            app:layout_constraintTop_toTopOf="parent"
+            tools:src="@drawable/ic_earth" />
+
+        <TextView
+            android:id="@+id/confirmAuthorizeDappTitle"
+            style="@style/TextAppearance.NovaFoundation.SemiBold.Title3"
+            android:layout_width="0dp"
+            android:layout_height="wrap_content"
+            android:layout_marginStart="16dp"
+            android:layout_marginTop="20dp"
+            android:layout_marginEnd="16dp"
+            android:gravity="center_horizontal"
+            android:textColor="@color/text_primary"
+            app:layout_constraintEnd_toEndOf="parent"
+            app:layout_constraintStart_toStartOf="parent"
+            app:layout_constraintTop_toBottomOf="@+id/confirmAuthorizeNovaIcon"
+            tools:text="Allow “Polkadot.js” to access your account addresses?" />
+
+        <TextView
+            android:id="@+id/confirmAuthorizeDappSubTitle"
+            style="@style/TextAppearance.NovaFoundation.Regular.Footnote"
+            android:layout_width="0dp"
+            android:layout_height="wrap_content"
+            android:layout_marginStart="16dp"
+            android:layout_marginTop="12dp"
+            android:layout_marginEnd="16dp"
+            android:gravity="center_horizontal"
+            android:text="@string/dapp_confirm_authorize_subtitle"
+            android:textColor="@color/text_secondary"
+            app:layout_constraintEnd_toEndOf="parent"
+            app:layout_constraintStart_toStartOf="parent"
+            app:layout_constraintTop_toBottomOf="@+id/confirmAuthorizeDappTitle" />
+
+        <io.novafoundation.nova.common.view.TableCellView
+            android:id="@+id/confirmAuthorizeDappWallet"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_marginStart="16dp"
+            android:layout_marginTop="24dp"
+            android:layout_marginEnd="16dp"
+            app:layout_constraintEnd_toEndOf="parent"
+            app:layout_constraintStart_toStartOf="parent"
+            app:layout_constraintTop_toBottomOf="@+id/confirmAuthorizeDappSubTitle"
+            app:title="@string/tabbar_wallet_title" />
+
+        <io.novafoundation.nova.common.view.TableCellView
+            android:id="@+id/confirmAuthorizeDappDApp"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_marginStart="16dp"
+            android:layout_marginEnd="16dp"
+            app:dividerVisible="false"
+            app:layout_constraintBottom_toBottomOf="parent"
+            app:layout_constraintEnd_toEndOf="parent"
+            app:layout_constraintStart_toStartOf="parent"
+            app:layout_constraintTop_toBottomOf="@+id/confirmAuthorizeDappWallet"
+            app:title="@string/dapp_dapp" />
+    </androidx.constraintlayout.widget.ConstraintLayout>
+</ScrollView>

feature-external-sign-api/src/main/res/layout/bottom_sheet_confirm_dapp_action.xml

@@ -0,0 +1,51 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    android:orientation="vertical"
+    tools:background="@color/bottom_sheet_background">
+
+    <ImageView
+        style="@style/Widget.Nova.Puller"
+        android:layout_gravity="center_horizontal"
+        android:layout_marginTop="6dp" />
+
+    <FrameLayout
+        android:id="@+id/confirmInnerContent"
+        android:layout_width="match_parent"
+        android:layout_height="0dp"
+        android:layout_weight="1"
+        tools:layout_height="300dp" />
+
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_marginBottom="16dp"
+        android:layout_marginTop="24dp"
+        android:orientation="horizontal">
+
+        <io.novafoundation.nova.common.view.PrimaryButton
+            android:id="@+id/confirmDAppActionReject"
+            style="@style/Widget.Nova.Button"
+            android:layout_width="0dp"
+            android:layout_height="wrap_content"
+            android:layout_marginStart="16dp"
+            android:layout_marginEnd="16dp"
+            android:layout_weight="1"
+            android:text="@string/common_reject"
+            app:appearance="secondary"
+            android:theme="@style/NegativeAccent" />
+
+        <io.novafoundation.nova.common.view.PrimaryButton
+            android:id="@+id/confirmDAppActionAllow"
+            style="@style/Widget.Nova.Button"
+            android:layout_width="0dp"
+            android:layout_height="wrap_content"
+            android:layout_marginEnd="16dp"
+            android:layout_weight="1"
+            android:text="@string/common_allow"
+            android:theme="@style/AccentBlue" />
+    </LinearLayout>
+</LinearLayout>