Fix crash when wellknown are malformed, or redirect to some HTML content (reported by rageshakes)

CHANGES.md

@@ -15,7 +15,8 @@ Improvements 🙌:
  - PIN Code Improvements: Add more settings: biometrics, grace period, notification content (#1985)
 
 Bugfix 🐛:
- - Long message cannot be sent/takes infinite time & blocks other messages #1397
+ - Long message cannot be sent/takes infinite time & blocks other messages (#1397)
+ - Fix crash when wellknown are malformed, or redirect to some HTML content (reported by rageshakes)
  - User Verification in DM not working
  - Manual import of Megolm keys does back up the imported keys
  - Auto scrolling to the latest message when sending (#2094)

vector/src/main/java/im/vector/app/features/raw/wellknown/ElementWellKnownMapper.kt

@@ -17,6 +17,7 @@
 package im.vector.app.features.raw.wellknown
 
 import com.squareup.moshi.JsonAdapter
+import org.matrix.android.sdk.api.extensions.tryOrNull
 import org.matrix.android.sdk.internal.di.MoshiProvider
 
 object ElementWellKnownMapper {
@@ -24,6 +25,6 @@ object ElementWellKnownMapper {
     val adapter: JsonAdapter<ElementWellKnown> = MoshiProvider.providesMoshi().adapter(ElementWellKnown::class.java)
 
     fun from(value: String): ElementWellKnown? {
-        return adapter.fromJson(value)
+        return tryOrNull("Unable to parse well-known data") { adapter.fromJson(value) }
     }
 }

vector/src/main/java/im/vector/app/features/settings/VectorSettingsSecurityPrivacyFragment.kt

@@ -57,7 +57,7 @@ import im.vector.app.features.navigation.Navigator
 import im.vector.app.features.pin.PinActivity
 import im.vector.app.features.pin.PinCodeStore
 import im.vector.app.features.pin.PinMode
-import im.vector.app.features.raw.wellknown.ElementWellKnownMapper
+import im.vector.app.features.raw.wellknown.getElementWellknown
 import im.vector.app.features.raw.wellknown.isE2EByDefault
 import im.vector.app.features.themes.ThemeUtils
 import io.reactivex.android.schedulers.AndroidSchedulers
@@ -153,14 +153,13 @@ class VectorSettingsSecurityPrivacyFragment @Inject constructor(
                     disposables.add(it)
                 }
 
-        vectorActivity.getVectorComponent()
-                .rawService()
-                .getWellknown(session.myUserId, object : MatrixCallback<String> {
-                    override fun onSuccess(data: String) {
-                        findPreference<VectorPreference>(VectorPreferences.SETTINGS_CRYPTOGRAPHY_HS_ADMIN_DISABLED_E2E_DEFAULT)?.isVisible =
-                                ElementWellKnownMapper.from(data)?.isE2EByDefault() == false
-                    }
-                })
+        lifecycleScope.launchWhenResumed {
+            findPreference<VectorPreference>(VectorPreferences.SETTINGS_CRYPTOGRAPHY_HS_ADMIN_DISABLED_E2E_DEFAULT)?.isVisible =
+                    vectorActivity.getVectorComponent()
+                            .rawService()
+                            .getElementWellknown(session.myUserId)
+                            ?.isE2EByDefault() == false
+        }
     }
 
     private val secureBackupCategory by lazy {