Enforce maximum extension lib version of 1.2

app/src/main/java/eu/kanade/tachiyomi/extension/api/ExtensionGithubApi.kt

@@ -7,6 +7,7 @@ import com.github.salomonbrys.kotson.string
 import com.google.gson.Gson
 import com.google.gson.JsonArray
 import eu.kanade.tachiyomi.extension.model.Extension
+import eu.kanade.tachiyomi.extension.util.ExtensionLoader
 import eu.kanade.tachiyomi.network.GET
 import eu.kanade.tachiyomi.network.NetworkHelper
 import eu.kanade.tachiyomi.network.asObservableSuccess
@@ -36,17 +37,23 @@ internal class ExtensionGithubApi {
 
         val json = gson.fromJson<JsonArray>(text)
 
-        return json.map { element ->
-            val name = element["name"].string.substringAfter("Tachiyomi: ")
-            val pkgName = element["pkg"].string
-            val apkName = element["apk"].string
-            val versionName = element["version"].string
-            val versionCode = element["code"].int
-            val lang = element["lang"].string
-            val icon = "$repoUrl/icon/${apkName.replace(".apk", ".png")}"
-
-            Extension.Available(name, pkgName, versionName, versionCode, lang, apkName, icon)
-        }
+        return json
+                .filter { element ->
+                    val versionName = element["version"].string
+                    val libVersion = versionName.substringBeforeLast('.').toDouble()
+                    libVersion >= ExtensionLoader.LIB_VERSION_MIN && libVersion <= ExtensionLoader.LIB_VERSION_MAX
+                }
+                .map { element ->
+                    val name = element["name"].string.substringAfter("Tachiyomi: ")
+                    val pkgName = element["pkg"].string
+                    val apkName = element["apk"].string
+                    val versionName = element["version"].string
+                    val versionCode = element["code"].int
+                    val lang = element["lang"].string
+                    val icon = "$repoUrl/icon/${apkName.replace(".apk", ".png")}"
+
+                    Extension.Available(name, pkgName, versionName, versionCode, lang, apkName, icon)
+                }
     }
 
     fun getApkUrl(extension: Extension.Available): String {

app/src/main/java/eu/kanade/tachiyomi/extension/util/ExtensionLoader.kt

@@ -27,8 +27,8 @@ internal object ExtensionLoader {
 
     private const val EXTENSION_FEATURE = "tachiyomi.extension"
     private const val METADATA_SOURCE_CLASS = "tachiyomi.extension.class"
-    private const val LIB_VERSION_MIN = 1
-    private const val LIB_VERSION_MAX = 1
+    const val LIB_VERSION_MIN = 1.0
+    const val LIB_VERSION_MAX = 1.2
 
     private const val PACKAGE_FLAGS = PackageManager.GET_CONFIGURATIONS or PackageManager.GET_SIGNATURES
 
@@ -107,9 +107,9 @@ internal object ExtensionLoader {
         }
 
         // Validate lib version
-        val majorLibVersion = versionName.substringBefore('.').toInt()
-        if (majorLibVersion < LIB_VERSION_MIN || majorLibVersion > LIB_VERSION_MAX) {
-            val exception = Exception("Lib version is $majorLibVersion, while only versions " +
+        val libVersion = versionName.substringBeforeLast('.').toDouble()
+        if (libVersion < LIB_VERSION_MIN || libVersion > LIB_VERSION_MAX) {
+            val exception = Exception("Lib version is $libVersion, while only versions " +
                     "$LIB_VERSION_MIN to $LIB_VERSION_MAX are allowed")
             Timber.w(exception)
             return LoadResult.Error(exception)