Fix Kumanga (ES) mangas list and pages list not loading (#5422)

* fixing kumanga

* JSON parse formula

* Fix Kumanga issues caused by obfuscation.

* Removed unused Regex

src/es/kumanga/build.gradle

@@ -5,7 +5,7 @@ ext {
     extName = 'Kumanga'
     pkgNameSuffix = 'es.kumanga'
     extClass = '.Kumanga'
-    extVersionCode = 5
+    extVersionCode = 6
     libVersion = '1.2'
 }
 

src/es/kumanga/src/eu/kanade/tachiyomi/extension/es/kumanga/Kumanga.kt

@@ -1,5 +1,6 @@
 package eu.kanade.tachiyomi.extension.es.kumanga
 
+import android.util.Base64
 import com.github.salomonbrys.kotson.array
 import com.github.salomonbrys.kotson.get
 import com.github.salomonbrys.kotson.int
@@ -22,7 +23,6 @@ import okhttp3.OkHttpClient
 import okhttp3.Request
 import okhttp3.Response
 import org.jsoup.nodes.Element
-import java.io.IOException
 import java.text.SimpleDateFormat
 import java.util.Locale
 import kotlin.math.roundToInt
@@ -61,14 +61,21 @@ class Kumanga : HttpSource() {
         .build()
 
     private var kumangaToken = ""
-    private val tokenRegex = Regex(""""([^"\s]{100,})"""")
 
-    private fun getKumangaToken() {
+    private fun encodeAndReverse(dtValue: String): String {
-        kumangaToken = client.newCall(GET("$baseUrl/mangalist?&page=1", headers)).execute().asJsoup()
+        return Base64.encodeToString(dtValue.toByteArray(), Base64.DEFAULT).reversed().trim()
-            .select("div.input-group [type=hidden]")
+    }
-            .firstOrNull()
+
-            ?.let { tokenRegex.find(it.outerHtml())?.groupValues?.get(1) }
+    private fun decodeBase64(encodedString: String): String {
-            ?: throw IOException("No fue posible obtener la lista de mangas")
+        return Base64.decode(encodedString, Base64.DEFAULT).toString(charset("UTF-8"))
+    }
+
+    private fun getKumangaToken(): String {
+        val body = client.newCall(GET("$baseUrl/mangalist?&page=1", headers)).execute().asJsoup()
+        var dt = body.select("#searchinput").attr("dt").toString()
+        var kumangaTokenKey = encodeAndReverse(encodeAndReverse(dt)).replace("=", "k").toLowerCase()
+        kumangaToken = body.select("div.input-group [type=hidden]").attr(kumangaTokenKey)
+        return kumangaToken
     }
 
     private fun getMangaCover(mangaId: String) = "https://static.kumanga.com/manga_covers/$mangaId.jpg?w=201"
@@ -169,10 +176,11 @@ class Kumanga : HttpSource() {
 
     override fun pageListParse(response: Response): List<Page> = mutableListOf<Page>().apply {
         val document = response.asJsoup()
-        val imagesJsonListStr = document.select("script:containsData(var pUrl=)").firstOrNull()?.data()
+        var imagesJsonListStr = document.select("script:containsData(var pUrl=)").firstOrNull()?.data()
             ?.substringAfter("var pUrl=")
             ?.substringBefore(";")
             ?: throw Exception("imagesJsonListStr null")
+        imagesJsonListStr = decodeBase64(decodeBase64(imagesJsonListStr).reversed().dropLast(10).drop(10))
         val imagesJsonList = parseJson(imagesJsonListStr).array
 
         imagesJsonList.forEach {