Sixmanhua: Fix page parsing (#4989)

src/zh/sixmh/build.gradle

@@ -3,7 +3,7 @@ ext {
     extClass = '.SixMH'
     themePkg = 'mccms'
     baseUrl = 'https://www.liumanhua.com'
-    overrideVersionCode = 4
+    overrideVersionCode = 5
 }
 
 apply from: "$rootDir/common.gradle"

src/zh/sixmh/src/eu/kanade/tachiyomi/extension/zh/sixmh/Crypto.kt

@@ -0,0 +1,18 @@
+package eu.kanade.tachiyomi.extension.zh.sixmh
+
+import android.util.Base64
+import kotlin.experimental.xor
+
+private val keys = arrayOf("Ni1iWGQ5aU4=", "Ni1SWHlqcnk=", "Ni1vWXZ3Vnk=", "Ni00Wlk1N1U=", "Ni1tYkpwVTc=", "Ni02TU0yRWk=", "Ni01NFRpUXI=", "Ni1QaDV4eDk=", "Ni1iWWdlUFI=", "Ni1aOUEzYlc=")
+
+internal fun decodeData(encodedData: String, cid: Int): String {
+    val key = Base64.decode(keys[cid % keys.size], Base64.DEFAULT)
+    val keyLength = key.size
+    val decodedData = Base64.decode(encodedData, Base64.DEFAULT)
+    val decryptedData = StringBuilder()
+    for (i in decodedData.indices) {
+        val decryptedCharCode = decodedData[i] xor key[i % keyLength]
+        decryptedData.appendCodePoint(decryptedCharCode.toInt())
+    }
+    return Base64.decode(decryptedData.toString(), Base64.DEFAULT).decodeToString()
+}

src/zh/sixmh/src/eu/kanade/tachiyomi/extension/zh/sixmh/Image.kt

@@ -0,0 +1,6 @@
+package eu.kanade.tachiyomi.extension.zh.sixmh
+
+import kotlinx.serialization.Serializable
+
+@Serializable
+data class Image(val id: String, val url: String)

src/zh/sixmh/src/eu/kanade/tachiyomi/extension/zh/sixmh/SixMH.kt

@@ -3,13 +3,19 @@ package eu.kanade.tachiyomi.extension.zh.sixmh
 import android.app.Application
 import android.os.Build
 import eu.kanade.tachiyomi.multisrc.mccms.MCCMS
+import eu.kanade.tachiyomi.source.model.Page
 import eu.kanade.tachiyomi.source.model.SChapter
 import eu.kanade.tachiyomi.source.model.SManga
+import kotlinx.serialization.decodeFromString
+import kotlinx.serialization.json.Json
+import okhttp3.Response
 import uy.kohesive.injekt.Injekt
 import uy.kohesive.injekt.api.get
+import uy.kohesive.injekt.injectLazy
 
 class SixMH : MCCMS("六漫画", "https://www.liumanhua.com") {
-
+    private val dataRegex = Regex("var DATA = '([A-Za-z0-9+/=]+)'")
+    private val json by injectLazy<Json>()
     override val versionId get() = 2
 
     init {
@@ -21,4 +27,12 @@ class SixMH : MCCMS("六漫画", "https://www.liumanhua.com") {
 
     override fun getMangaUrl(manga: SManga) = "https://m.liumanhua.com" + manga.url
     override fun getChapterUrl(chapter: SChapter) = "https://m.liumanhua.com" + chapter.url
+
+    override fun pageListParse(response: Response): List<Page> {
+        val encodedData = dataRegex.find(response.body.string())?.groupValues?.get(1) ?: ""
+        val cid = response.request.url.pathSegments.last().removeSuffix(".html").toIntOrNull() ?: 0
+        val decodedData = decodeData(encodedData, cid)
+        val images = json.decodeFromString<List<Image>>(decodedData)
+        return images.mapIndexed { index, image -> Page(index, imageUrl = image.url) }
+    }
 }