From 975309e37d1eda86f59765e9060b4fe5d4fb8736 Mon Sep 17 00:00:00 2001
From: Kevin Deus <kdeus@google.com>
Date: Tue, 26 Nov 2024 12:30:40 -0800
Subject: [PATCH] B64-encode documentId in routes.

Some document IDs are URLs, so they have slashes in them. That messes with
our route strings, which use slashes to separate parameters. Encoding the
docId fixes a crash when trying to navigate to the Activity Log for a single
event, when using the German or EU PIDs.

Tested by:
- Manual testing of Utopia, German, and EU PIDs.
- ./gradlew check
- ./gradlew connectedCheck

Signed-off-by: Kevin Deus <kdeus@google.com>
---
 .../wallet/navigation/WalletNavigation.kt                   | 4 +++-
 .../wallet/ui/destination/document/EventLogScreen.kt        | 6 ++++--
 2 files changed, 7 insertions(+), 3 deletions(-)

diff --git a/wallet/src/main/java/com/android/identity_credential/wallet/navigation/WalletNavigation.kt b/wallet/src/main/java/com/android/identity_credential/wallet/navigation/WalletNavigation.kt
index 1db00be65..5141c480e 100644
--- a/wallet/src/main/java/com/android/identity_credential/wallet/navigation/WalletNavigation.kt
+++ b/wallet/src/main/java/com/android/identity_credential/wallet/navigation/WalletNavigation.kt
@@ -7,6 +7,7 @@ import androidx.navigation.NavType
 import androidx.navigation.compose.NavHost
 import androidx.navigation.compose.composable
 import androidx.navigation.navArgument
+import com.android.identity.util.fromBase64Url
 import com.android.identity_credential.wallet.DocumentModel
 import com.android.identity_credential.wallet.PermissionTracker
 import com.android.identity_credential.wallet.ProvisioningViewModel
@@ -134,7 +135,8 @@ fun WalletNavigation(
             )
         ) { backStackEntry ->
             // Extract arguments from the back stack entry
-            val documentId = backStackEntry.arguments?.getString("documentId") ?: ""
+            val encodedDocumentId = backStackEntry.arguments?.getString("documentId") ?: ""
+            val documentId = String(encodedDocumentId.fromBase64Url())
             val timestamp = backStackEntry.arguments?.getString("timestamp") ?: ""
 
             EventDetailsScreen(
diff --git a/wallet/src/main/java/com/android/identity_credential/wallet/ui/destination/document/EventLogScreen.kt b/wallet/src/main/java/com/android/identity_credential/wallet/ui/destination/document/EventLogScreen.kt
index f52ae7741..a9e1579e1 100644
--- a/wallet/src/main/java/com/android/identity_credential/wallet/ui/destination/document/EventLogScreen.kt
+++ b/wallet/src/main/java/com/android/identity_credential/wallet/ui/destination/document/EventLogScreen.kt
@@ -17,13 +17,14 @@ import androidx.compose.material3.MaterialTheme
 import androidx.compose.material3.Text
 import androidx.compose.runtime.Composable
 import androidx.compose.runtime.mutableStateListOf
+import androidx.compose.runtime.remember
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.res.stringResource
 import androidx.compose.ui.text.style.TextAlign
 import androidx.compose.ui.unit.dp
-import androidx.compose.runtime.remember
 import androidx.navigation.NavHostController
+import com.android.identity.util.toBase64Url
 import com.android.identity_credential.wallet.DocumentModel
 import com.android.identity_credential.wallet.EventInfo
 import com.android.identity_credential.wallet.R
@@ -110,7 +111,8 @@ fun EventLogScreen(
                                 .padding(4.dp)
                                 .clickable {
                                     // Pass documentId and timestamp as arguments
-                                    navController.navigate("${WalletDestination.EventDetails.route}/$documentId/${eventInfo.timestamp}")
+                                    val encodedDocId = documentId.toByteArray().toBase64Url()
+                                    navController.navigate("${WalletDestination.EventDetails.route}/$encodedDocId/${eventInfo.timestamp}")
                                 },
                             verticalAlignment = Alignment.CenterVertically
                         ) {