Tsumino: bypass email protection (#10760)

* Tsumino: bypass email protection

* Rewrite cfDecodeEmail

Use less magic, safety is kept in mind for the key and data.
Invalid key returns an empty string, invalid data is skipped.

Returns not null since the Element.text() function validates
that the input is not null -- and it's probably a useless
distincion anyways.

* further kotlin-ify cfDecodeEmails

src/en/tsumino/build.gradle

@@ -6,7 +6,7 @@ ext {
     extName = 'Tsumino'
     pkgNameSuffix = 'en.tsumino'
     extClass = '.Tsumino'
-    extVersionCode = 5
+    extVersionCode = 6
     isNsfw = true
 }
 

src/en/tsumino/src/eu/kanade/tachiyomi/extension/en/tsumino/Tsumino.kt

@@ -1,5 +1,6 @@
 package eu.kanade.tachiyomi.extension.en.tsumino
 
+import eu.kanade.tachiyomi.extension.en.tsumino.TsuminoUtils.Companion.cfDecodeEmails
 import eu.kanade.tachiyomi.extension.en.tsumino.TsuminoUtils.Companion.getArtists
 import eu.kanade.tachiyomi.extension.en.tsumino.TsuminoUtils.Companion.getChapter
 import eu.kanade.tachiyomi.extension.en.tsumino.TsuminoUtils.Companion.getCollection
@@ -160,13 +161,13 @@ class Tsumino : HttpSource() {
         val document = response.asJsoup()
         val infoElement = document.select("div.book-page-container")
         return SManga.create().apply {
-            title = infoElement.select("#Title").text()
+            title = document.select("meta[property=og:title]").first()!!.attr("content")
             artist = getArtists(document)
             author = artist
             status = SManga.COMPLETED
             thumbnail_url = infoElement.select("img").attr("src")
             description = getDesc(document)
-            genre = document.select("#Tag a").joinToString { it.text() }
+            genre = document.select("#Tag a").joinToString { it.attr("data-define") }
         }
     }
 
@@ -174,6 +175,8 @@ class Tsumino : HttpSource() {
 
     override fun chapterListParse(response: Response): List<SChapter> {
         val document = response.asJsoup()
+        cfDecodeEmails(document)
+
         val collection = document.select(".book-collection-table a")
         return if (collection.isNotEmpty()) {
             getCollection(document, ".book-collection-table a")

src/en/tsumino/src/eu/kanade/tachiyomi/extension/en/tsumino/TsuminoUtils.kt

@@ -11,7 +11,7 @@ class TsuminoUtils {
             val artists = document.select("#Artist a")
 
             artists.forEach {
-                stringBuilder.append(it.text())
+                stringBuilder.append(it.attr("data-define"))
 
                 if (it != artists.last())
                     stringBuilder.append(", ")
@@ -25,7 +25,7 @@ class TsuminoUtils {
             val groups = document.select("#Group a")
 
             groups.forEach {
-                stringBuilder.append(it.text())
+                stringBuilder.append(it.attr("data-define"))
 
                 if (it != groups.last())
                     stringBuilder.append(", ")
@@ -47,7 +47,7 @@ class TsuminoUtils {
                 stringBuilder.append("Parodies: ")
 
                 parodies.forEach {
-                    stringBuilder.append(it.text())
+                    stringBuilder.append(it.attr("data-define"))
 
                     if (it != parodies.last())
                         stringBuilder.append(", ")
@@ -59,7 +59,7 @@ class TsuminoUtils {
                 stringBuilder.append("Characters: ")
 
                 characters.forEach {
-                    stringBuilder.append(it.text())
+                    stringBuilder.append(it.attr("data-define"))
 
                     if (it != characters.last())
                         stringBuilder.append(", ")
@@ -93,5 +93,26 @@ class TsuminoUtils {
             chapterList.add(chapter)
             return chapterList
         }
+
+        fun cfDecodeEmails(document: Document) {
+            document.select(".__cf_email__")!!
+                .map { it to cfDecodeEmail(it.attr("data-cfemail")) }
+                .forEach { (element, plaintext) -> element.text(plaintext) }
+        }
+
+        fun cfDecodeEmail(encoded: String): String {
+            val encodedList = encoded
+                .chunked(2)
+                .map { it.toIntOrNull(16) }
+
+            val key = encodedList
+                .firstOrNull()
+                ?: return ""
+
+            return encodedList
+                .drop(1)
+                .mapNotNull { it?.xor(key)?.toChar() }
+                .joinToString("")
+        }
     }
 }