Merge pull request #182 from ooni/fix-website-base64

Fix website base64 encoding crash on iOS

composeApp/src/commonMain/kotlin/org/ooni/probe/shared/StringExt.kt

@@ -2,6 +2,10 @@ package org.ooni.probe.shared
 
 import kotlin.io.encoding.Base64
 
-fun String?.encodeUrlToBase64() = Base64.UrlSafe.encode(orEmpty().encodeToByteArray())
+private val BASE64 by lazy {
+    Base64.UrlSafe.withPadding(Base64.PaddingOption.ABSENT_OPTIONAL)
+}
 
-fun String?.decodeUrlFromBase64() = this?.ifEmpty { null }?.let { Base64.UrlSafe.decode(it).decodeToString() }
+fun String?.encodeUrlToBase64() = BASE64.encode(orEmpty().encodeToByteArray())
+
+fun String?.decodeUrlFromBase64() = this?.ifEmpty { null }?.let { BASE64.decode(it).decodeToString() }

composeApp/src/commonTest/kotlin/org/ooni/probe/ui/shared/StringExtTest.kt

@@ -0,0 +1,20 @@
+package org.ooni.probe.ui.shared
+
+import org.ooni.probe.shared.decodeUrlFromBase64
+import org.ooni.probe.shared.encodeUrlToBase64
+import kotlin.test.Test
+import kotlin.test.assertEquals
+
+class StringExtTest {
+    @Test
+    fun base64Encoding() {
+        listOf(
+            null,
+            "http://example.org",
+            "https://ooni.io",
+            "https://dartcenter.org",
+        ).forEach {
+            assertEquals(it, it.encodeUrlToBase64().decodeUrlFromBase64())
+        }
+    }
+}