From 5427aa2032652985f930574fe821ffdad31ae4f2 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Radek=20Gol=C3=A1=C5=88=20jr=2E?= <shield@shielddagger.com>
Date: Wed, 29 Jan 2025 22:06:10 +0100
Subject: [PATCH] Implement basic OIDC debugging functionality

---
 .idea/deploymentTargetSelector.xml            |   8 +
 .../auth/oidc_debugger/MainActivity.kt        | 122 +++++++-
 .../auth/oidc_debugger/ValidateActivity.kt    | 277 +++++++++++++++++-
 .../auth/oidc_debugger/oidc/OIDCCore.kt       |  24 +-
 .../oidc/{JsonFormRequest.kt => Requests.kt}  |  15 +
 app/src/main/res/values/colors.xml            |   2 +
 gradle.properties                             |   3 +-
 7 files changed, 427 insertions(+), 24 deletions(-)
 rename app/src/main/java/com/shielddagger/auth/oidc_debugger/oidc/{JsonFormRequest.kt => Requests.kt} (79%)

diff --git a/.idea/deploymentTargetSelector.xml b/.idea/deploymentTargetSelector.xml
index fc8303f..81e92f1 100644
--- a/.idea/deploymentTargetSelector.xml
+++ b/.idea/deploymentTargetSelector.xml
@@ -4,6 +4,14 @@
     <selectionStates>
       <SelectionState runConfigName="app">
         <option name="selectionMode" value="DROPDOWN" />
+        <DropdownSelection timestamp="2025-01-29T21:02:35.084938400Z">
+          <Target type="DEFAULT_BOOT">
+            <handle>
+              <DeviceId pluginId="PhysicalDevice" identifier="serial=38091JEHN10130" />
+            </handle>
+          </Target>
+        </DropdownSelection>
+        <DialogSelection />
       </SelectionState>
       <SelectionState runConfigName="MainActivity">
         <option name="selectionMode" value="DROPDOWN" />
diff --git a/app/src/main/java/com/shielddagger/auth/oidc_debugger/MainActivity.kt b/app/src/main/java/com/shielddagger/auth/oidc_debugger/MainActivity.kt
index 9299a36..88416ee 100644
--- a/app/src/main/java/com/shielddagger/auth/oidc_debugger/MainActivity.kt
+++ b/app/src/main/java/com/shielddagger/auth/oidc_debugger/MainActivity.kt
@@ -1,27 +1,62 @@
 package com.shielddagger.auth.oidc_debugger
 
+import android.content.Context
+import android.content.Intent
 import android.os.Bundle
+import android.util.Log
 import androidx.activity.ComponentActivity
 import androidx.activity.compose.setContent
 import androidx.activity.enableEdgeToEdge
+import androidx.compose.foundation.layout.Arrangement
+import androidx.compose.foundation.layout.Column
 import androidx.compose.foundation.layout.fillMaxSize
+import androidx.compose.foundation.layout.fillMaxWidth
 import androidx.compose.foundation.layout.padding
+import androidx.compose.material3.Button
+import androidx.compose.material3.ExperimentalMaterial3Api
+import androidx.compose.material3.MaterialTheme
 import androidx.compose.material3.Scaffold
 import androidx.compose.material3.Text
+import androidx.compose.material3.TextField
+import androidx.compose.material3.TopAppBar
+import androidx.compose.material3.TopAppBarDefaults
 import androidx.compose.runtime.Composable
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.remember
+import androidx.compose.runtime.setValue
+import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
+import androidx.compose.ui.platform.LocalContext
 import androidx.compose.ui.tooling.preview.Preview
+import androidx.compose.ui.unit.dp
+import com.shielddagger.auth.oidc_debugger.oidc.ClientAuthType
+import com.shielddagger.auth.oidc_debugger.oidc.OIDCCore
+import com.shielddagger.auth.oidc_debugger.oidc.OIDCResponseType
 import com.shielddagger.auth.oidc_debugger.ui.theme.OIDCDebuggerTheme
+import kotlinx.serialization.ExperimentalSerializationApi
+import kotlinx.serialization.encodeToString
+import kotlinx.serialization.json.Json
+import kotlinx.serialization.json.decodeFromStream
 
 class MainActivity : ComponentActivity() {
+    @OptIn(ExperimentalMaterial3Api::class)
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
         enableEdgeToEdge()
         setContent {
             OIDCDebuggerTheme {
-                Scaffold(modifier = Modifier.fillMaxSize()) { innerPadding ->
-                    Greeting(
-                        name = "Android",
+                Scaffold(
+                    modifier = Modifier.fillMaxSize(),
+                    topBar = {
+                        TopAppBar(title = {
+                                Text("Issuer Configuration")
+                            }
+                        )
+                    },
+
+                    ) { innerPadding ->
+                    IssuerForm(
                         modifier = Modifier.padding(innerPadding)
                     )
                 }
@@ -30,18 +65,87 @@ class MainActivity : ComponentActivity() {
     }
 }
 
+@OptIn(ExperimentalSerializationApi::class)
 @Composable
-fun Greeting(name: String, modifier: Modifier = Modifier) {
-    Text(
-        text = "Hello $name!",
-        modifier = modifier
-    )
+fun IssuerForm(modifier: Modifier = Modifier) {
+    val context = LocalContext.current
+    var client: OIDCCore? = null;
+
+    if (context.fileList().contains("issuerConfig")) {
+        val ifo = context.openFileInput("issuerConfig")
+        try {
+            client = Json.decodeFromStream<OIDCCore>(ifo);
+        }
+        catch (e: Throwable) {
+            Log.e("persistence", "IssuerForm: Unable to parse issuerConfig, ignoring")
+        }
+        ifo.close()
+    }
+
+    var authorizeUrl by remember { mutableStateOf(client?.authorizeUri ?: "") }
+    var tokenUrl by remember { mutableStateOf(client?.tokenUri ?: "") }
+    var userinfoUrl by remember { mutableStateOf(client?.userinfoUri ?: "") }
+    var clientId by remember { mutableStateOf(client?.clientId ?: "") }
+    var clientSecret by remember { mutableStateOf(client?.clientSecret ?: "") }
+    var scopes by remember { mutableStateOf(client?.scope ?: listOf("")) }
+
+    Column (modifier = modifier
+        .padding(10.dp)
+        .fillMaxWidth(),
+        verticalArrangement = Arrangement.spacedBy(8.dp),
+        horizontalAlignment = Alignment.CenterHorizontally) {
+        TextField(authorizeUrl, { authorizeUrl = it },
+            label = { Text("Authorize URL")},
+            modifier = Modifier.fillMaxWidth())
+        TextField(tokenUrl, { tokenUrl = it },
+            label = { Text("Token URL")},
+            modifier = Modifier.fillMaxWidth())
+        TextField(userinfoUrl, { userinfoUrl = it },
+            label = { Text("Userinfo URL")},
+            modifier = Modifier.fillMaxWidth())
+        TextField(clientId, { clientId = it },
+            label = { Text("Client ID")},
+            modifier = Modifier.fillMaxWidth())
+        TextField(clientSecret, { clientSecret = it },
+            label = { Text("Client Secret")},
+            modifier = Modifier.fillMaxWidth())
+        TextField(scopes.joinToString(" "), { scopes = it.split(" ")},
+            label = { Text("Scopes")},
+            modifier = Modifier.fillMaxWidth())
+        Button({
+            val oidcClient = OIDCCore(
+                listOf(OIDCResponseType.CODE),
+                scopes,
+                clientId,
+                context.resources.getString(R.string.redirect_uri),
+                authorizeUrl,
+                tokenUrl,
+                userinfoUrl,
+                clientSecret,
+                ClientAuthType.POST
+            )
+            val authUri = oidcClient.beginAuth()
+            Log.d("oidcdebugger", "IssuerForm: authUri: $authUri")
+
+            val of = context.openFileOutput("issuerConfig", Context.MODE_PRIVATE)
+            val bv = of.bufferedWriter()
+            val data = Json.encodeToString(oidcClient)
+            bv.write(data)
+            bv.close()
+            of.close()
+
+            val intent = Intent(Intent.ACTION_VIEW, authUri)
+            context.startActivity(intent)
+        }) {
+            Text("Authorize")
+        }
+    }
 }
 
 @Preview(showBackground = true)
 @Composable
 fun GreetingPreview() {
     OIDCDebuggerTheme {
-        Greeting("Android")
+        IssuerForm()
     }
 }
\ No newline at end of file
diff --git a/app/src/main/java/com/shielddagger/auth/oidc_debugger/ValidateActivity.kt b/app/src/main/java/com/shielddagger/auth/oidc_debugger/ValidateActivity.kt
index 72ec821..a2d1cc6 100644
--- a/app/src/main/java/com/shielddagger/auth/oidc_debugger/ValidateActivity.kt
+++ b/app/src/main/java/com/shielddagger/auth/oidc_debugger/ValidateActivity.kt
@@ -1,19 +1,49 @@
 package com.shielddagger.auth.oidc_debugger
 
+import android.net.Uri
 import android.os.Bundle
+import android.util.Log
 import androidx.activity.ComponentActivity
 import androidx.activity.compose.setContent
 import androidx.activity.enableEdgeToEdge
+import androidx.compose.foundation.layout.Arrangement
+import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.Spacer
 import androidx.compose.foundation.layout.fillMaxSize
+import androidx.compose.foundation.layout.fillMaxWidth
+import androidx.compose.foundation.layout.height
 import androidx.compose.foundation.layout.padding
+import androidx.compose.material3.CardDefaults
+import androidx.compose.material3.CircularProgressIndicator
+import androidx.compose.material3.ElevatedCard
+import androidx.compose.material3.ExperimentalMaterial3Api
+import androidx.compose.material3.MaterialTheme
 import androidx.compose.material3.Scaffold
 import androidx.compose.material3.Text
+import androidx.compose.material3.TopAppBar
+import androidx.compose.material3.TopAppBarDefaults
 import androidx.compose.runtime.Composable
+import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.remember
+import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
+import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.platform.LocalContext
+import androidx.compose.ui.text.style.TextAlign
 import androidx.compose.ui.tooling.preview.Preview
+import androidx.compose.ui.unit.dp
+import com.android.volley.toolbox.Volley
+import com.shielddagger.auth.oidc_debugger.oidc.OIDCCore
+import com.shielddagger.auth.oidc_debugger.oidc.OIDCTokenErrorResponse
+import com.shielddagger.auth.oidc_debugger.oidc.TokenResponse
 import com.shielddagger.auth.oidc_debugger.ui.theme.OIDCDebuggerTheme
+import kotlinx.serialization.ExperimentalSerializationApi
+import kotlinx.serialization.json.Json
+import kotlinx.serialization.json.decodeFromStream
+import org.json.JSONObject
 
 class ValidateActivity : ComponentActivity() {
+    @OptIn(ExperimentalMaterial3Api::class)
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
 
@@ -23,10 +53,16 @@ class ValidateActivity : ComponentActivity() {
         enableEdgeToEdge()
         setContent {
             OIDCDebuggerTheme {
-                Scaffold(modifier = Modifier.fillMaxSize()) { innerPadding ->
-                    Greeting2(
-                        data = data.toString(),
-                        action = action.toString(),
+                Scaffold(
+                    modifier = Modifier.fillMaxSize(),
+                    topBar = {TopAppBar(
+                        title = {
+                            Text("Response Analysis")
+                        }
+                    )}
+                ) { innerPadding ->
+                    Analysis(
+                        data = data,
                         modifier = Modifier.padding(innerPadding)
                     )
                 }
@@ -35,18 +71,239 @@ class ValidateActivity : ComponentActivity() {
     }
 }
 
+@OptIn(ExperimentalSerializationApi::class)
 @Composable
-fun Greeting2(data: String, action: String, modifier: Modifier = Modifier) {
-    Text(
-        text = "$data\n$action",
-        modifier = modifier
-    )
+fun Analysis(data: Uri?, modifier: Modifier = Modifier) {
+    val context = LocalContext.current
+    var client: OIDCCore? = null;
+
+    val tokenExchange = remember {
+        mutableStateOf(true)
+    }
+    val tokenData = remember {
+        mutableStateOf(TokenResponse())
+    }
+
+    val userinfoExchange = remember {
+        mutableStateOf(true)
+    }
+    val userinfoError = remember {
+        mutableStateOf<String?>(null)
+    }
+    val userinfoData = remember {
+        mutableStateOf(JSONObject())
+    }
+
+    if (context.fileList().contains("issuerConfig")) {
+        val ifo = context.openFileInput("issuerConfig")
+        try {
+            client = Json.decodeFromStream<OIDCCore>(ifo);
+        }
+        catch (e: Throwable) {
+            Log.e("persistence", "IssuerForm: Unable to parse issuerConfig, ignoring")
+        }
+        ifo.close()
+    }
+
+    Column (modifier = modifier
+        .padding(10.dp)
+        .fillMaxWidth(),
+        verticalArrangement = Arrangement.spacedBy(8.dp),
+        horizontalAlignment = Alignment.CenterHorizontally) {
+        ElevatedCard(
+            elevation = CardDefaults.cardElevation(
+                defaultElevation = 6.dp
+            ),
+            modifier = Modifier.fillMaxWidth()
+        ) {
+            Text(
+                text = "Authorization State",
+                modifier = Modifier
+                    .padding(16.dp),
+                textAlign = TextAlign.Center,
+            )
+            if (client == null) {
+                Text(
+                    "Client Missing",
+                    modifier = Modifier
+                        .padding(32.dp, 0.dp, 0.dp),
+                    color = Color.Red
+                )
+                Spacer(Modifier.height(32.dp))
+                return@ElevatedCard
+            }
+            if (data == null) {
+                Text(
+                    "Data Missing",
+                    modifier = Modifier
+                        .padding(32.dp, 0.dp, 0.dp),
+                    color = Color.Red
+                )
+                Spacer(Modifier.height(32.dp))
+                return@ElevatedCard
+            }
+
+            client.validateAuthResponse(data).forEach {
+                Text(
+                    it.message,
+                    modifier = Modifier
+                        .padding(32.dp, 0.dp, 0.dp),
+                    color = if (it.success) Color(context.resources.getColor(R.color.success))
+                            else Color(context.resources.getColor(R.color.failure))
+                )
+            }
+
+            Spacer(Modifier.height(32.dp))
+
+        }
+        ElevatedCard(
+            elevation = CardDefaults.cardElevation(
+                defaultElevation = 6.dp
+            ),
+            modifier = Modifier.fillMaxWidth()
+        ) {
+            Text(
+                text = "Token Exchange",
+                modifier = Modifier
+                    .padding(16.dp),
+                textAlign = TextAlign.Center,
+            )
+
+            if (tokenExchange.value) {
+                CircularProgressIndicator(
+                    modifier = Modifier
+                        .padding(32.dp, 0.dp)
+                )
+                Spacer(Modifier.height(32.dp))
+                return@ElevatedCard
+            }
+
+            if (tokenData.value.error != null) {
+                Text(
+                    text="Error: ${tokenData.value.error!!.message}",
+                    modifier = Modifier
+                        .padding(32.dp, 0.dp, 0.dp),
+                    color = Color.Red
+                )
+                Spacer(Modifier.height(32.dp))
+                return@ElevatedCard
+            }
+            Text(
+                text = "Type: ${tokenData.value.tokenType.toString()}",
+                modifier = Modifier
+                    .padding(32.dp, 0.dp, 0.dp),
+                textAlign = TextAlign.Center
+            )
+            Text(
+                text = "Scopes: ${tokenData.value.scope?.joinToString(", ")}",
+                modifier = Modifier
+                    .padding(32.dp, 0.dp, 0.dp),
+                textAlign = TextAlign.Center
+            )
+            Text(
+                text = "Expires In: ${tokenData.value.expiresIn?.toString() ?: Int.MAX_VALUE}s",
+                modifier = Modifier
+                    .padding(32.dp, 0.dp, 0.dp),
+                textAlign = TextAlign.Center
+            )
+            Text(
+                text = "Refresh Token: ${tokenData.value.refreshToken != null}",
+                modifier = Modifier
+                    .padding(32.dp, 0.dp, 0.dp),
+                textAlign = TextAlign.Center
+            )
+            Text(
+                text = "ID Token: ${tokenData.value.idToken != null}",
+                modifier = Modifier
+                    .padding(32.dp, 0.dp, 0.dp),
+                textAlign = TextAlign.Center
+            )
+            Spacer(Modifier.height(32.dp))
+        }
+        ElevatedCard(
+            elevation = CardDefaults.cardElevation(
+                defaultElevation = 6.dp
+            ),
+            modifier = Modifier.fillMaxWidth()
+        ) {
+            Text(
+                text = "User Info",
+                modifier = Modifier
+                    .padding(16.dp),
+                textAlign = TextAlign.Center,
+            )
+
+            if (userinfoExchange.value) {
+                CircularProgressIndicator(
+                    modifier = Modifier
+                        .padding(32.dp, 0.dp)
+                )
+                Spacer(Modifier.height(32.dp))
+                return@ElevatedCard
+            }
+            if (userinfoError.value != null){
+                Text(
+                    userinfoError.value!!,
+                    modifier = Modifier
+                        .padding(32.dp, 0.dp, 0.dp),
+                    color = Color.Red
+                )
+                Spacer(Modifier.height(32.dp))
+                return@ElevatedCard
+            }
+
+            userinfoData.value.keys().forEach {
+                Text(
+                    "$it: ${userinfoData.value[it]}",
+                    modifier = Modifier
+                        .padding(32.dp, 0.dp, 0.dp)
+                )
+            }
+            Spacer(Modifier.height(32.dp))
+        }
+    }
+
+    if (client == null){
+        tokenExchange.value = false
+        tokenData.value = TokenResponse(OIDCTokenErrorResponse.INVALID_CLIENT)
+        userinfoExchange.value = false
+        return
+    }
+
+    val queue = Volley.newRequestQueue(context)
+
+    val tokenRequest = client.getTokenFromCode(data!!, { tokenResponse ->
+        val tokenResponseData = client.validateTokenResponse(tokenResponse)
+        tokenData.value = tokenResponseData
+        tokenExchange.value = false
+
+        if (tokenResponseData.error != null) {
+            return@getTokenFromCode
+        }
+
+        val userinfoRequest = client.getUserinfo(tokenData.value.accessToken!!, { userdataResponse ->
+            userinfoData.value = userdataResponse
+            userinfoExchange.value = false
+            Log.d("oidcdebugger", "userinfo: ${userdataResponse.toString(4)}")
+        }, {
+            userinfoError.value = (it.message ?: "Unknown Error")
+            userinfoExchange.value = false
+            Log.d("oidcdebugger", it.message.toString())
+        })
+        queue.add(userinfoRequest)
+    }, {
+        tokenData.value = TokenResponse(OIDCTokenErrorResponse.INVALID_REQUEST)
+        tokenExchange.value = false
+        userinfoExchange.value = false
+    })
+    queue.add(tokenRequest)
+
 }
 
 @Preview(showBackground = true)
 @Composable
 fun GreetingPreview2() {
     OIDCDebuggerTheme {
-        Greeting2("data", "action")
+        Analysis(null)
     }
 }
\ No newline at end of file
diff --git a/app/src/main/java/com/shielddagger/auth/oidc_debugger/oidc/OIDCCore.kt b/app/src/main/java/com/shielddagger/auth/oidc_debugger/oidc/OIDCCore.kt
index fad5ec0..81175f8 100644
--- a/app/src/main/java/com/shielddagger/auth/oidc_debugger/oidc/OIDCCore.kt
+++ b/app/src/main/java/com/shielddagger/auth/oidc_debugger/oidc/OIDCCore.kt
@@ -1,6 +1,7 @@
 package com.shielddagger.auth.oidc_debugger.oidc
 
 import android.net.Uri
+import android.util.Log
 import com.android.volley.Request
 import com.android.volley.Response
 import com.android.volley.toolbox.JsonObjectRequest
@@ -74,7 +75,8 @@ enum class OIDCTokenErrorResponse(private val type: String, val message: String)
     INVALID_GRANT("invalid_grant", "Invalid Grant"),
     UNAUTHORIZED_CLIENT("unauthorized_client", "Unauthorized Client"),
     UNAUTHORIZED_GRANT_TYPE("unsupported_grant_type", "Unauthorized Grant Type"),
-    INVALID_SCOPE("invalid_scope", "Invalid Scope");
+    INVALID_SCOPE("invalid_scope", "Invalid Scope"),
+    BAD_STATE("bad_state", "Incorrect Session State");
 
     override fun toString(): String {
         return this.type
@@ -110,6 +112,8 @@ data class TokenResponse(
     val tokenType: OIDCTokenType? = null,
     val expiresIn: Int? = null,
     val refreshToken: String? = null,
+    val refreshExpiresIn: Int? = null,
+    val idToken: String? = null,
     val scope: List<String>? = null
 )
 
@@ -218,16 +222,28 @@ class OIDCCore(
             )
         }
 
+        Log.d("oidccore", "validateTokenResponse: ${response.toString(4)}")
+
         return TokenResponse(
             accessToken = response.getString("access_token"),
-            tokenType = OIDCTokenType.fromString(response.getString("token_type")),
+            tokenType = OIDCTokenType.fromString(response.getString("token_type").lowercase()),
+            idToken = response.getString("id_token"),
             expiresIn = if (response.has("expires_in")) response.getInt("expires_in") else null,
             refreshToken = if (response.has("refresh_token")) response.getString("refresh_token") else null,
+            refreshExpiresIn = if (response.has("refresh_expires_in")) response.getInt("refresh_expires_in") else null,
             scope = if (response.has("scope")) response.getString("scope").split(" ") else null
         )
     }
 
-    fun getUserinfo(accessToken: String?): JsonObjectRequest? {
-        return null
+    fun getUserinfo(accessToken: String,
+                    responseHandler: Response.Listener<JSONObject> = Response.Listener {},
+                    errorHandler: Response.ErrorListener = Response.ErrorListener {}): JsonObjectRequest {
+        return JsonAuthRequest(
+            Request.Method.GET,
+            userinfoUri,
+            accessToken,
+            responseHandler,
+            errorHandler
+        )
     }
 }
\ No newline at end of file
diff --git a/app/src/main/java/com/shielddagger/auth/oidc_debugger/oidc/JsonFormRequest.kt b/app/src/main/java/com/shielddagger/auth/oidc_debugger/oidc/Requests.kt
similarity index 79%
rename from app/src/main/java/com/shielddagger/auth/oidc_debugger/oidc/JsonFormRequest.kt
rename to app/src/main/java/com/shielddagger/auth/oidc_debugger/oidc/Requests.kt
index 938f0e5..23f0121 100644
--- a/app/src/main/java/com/shielddagger/auth/oidc_debugger/oidc/JsonFormRequest.kt
+++ b/app/src/main/java/com/shielddagger/auth/oidc_debugger/oidc/Requests.kt
@@ -47,4 +47,19 @@ class JsonFormRequest(
         }
         return null
     }
+}
+
+class JsonAuthRequest(
+    method: Int,
+    url: String?,
+    private var token: String,
+    listener: Response.Listener<JSONObject>?,
+    errorListener: Response.ErrorListener?
+) : JsonObjectRequest(method, url, null, listener, errorListener) {
+    override fun getHeaders(): MutableMap<String, String> {
+        val headers = mutableMapOf<String,String>()
+        headers.putAll(super.getHeaders())
+        headers["Authorization"] = "Bearer $token"
+        return headers;
+    }
 }
\ No newline at end of file
diff --git a/app/src/main/res/values/colors.xml b/app/src/main/res/values/colors.xml
index f8c6127..1070289 100644
--- a/app/src/main/res/values/colors.xml
+++ b/app/src/main/res/values/colors.xml
@@ -7,4 +7,6 @@
     <color name="teal_700">#FF018786</color>
     <color name="black">#FF000000</color>
     <color name="white">#FFFFFFFF</color>
+    <color name="success">#FF009900</color>
+    <color name="failure">#FF990000</color>
 </resources>
\ No newline at end of file
diff --git a/gradle.properties b/gradle.properties
index 20e2a01..316a8ed 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -20,4 +20,5 @@ kotlin.code.style=official
 # Enables namespacing of each library's R class so that its R class includes only the
 # resources declared in the library itself and none from the library's dependencies,
 # thereby reducing the size of the R class for that library
-android.nonTransitiveRClass=true
\ No newline at end of file
+android.nonTransitiveRClass=true
+org.gradle.configuration-cache=true
\ No newline at end of file