From 8b375593ffb941090bbf92af1b7619181620a38d Mon Sep 17 00:00:00 2001
From: Ming Kit <4424781+lmk1988@users.noreply.github.com>
Date: Tue, 5 Jan 2021 00:58:37 +0800
Subject: [PATCH] Added new Cocomanhua decryption key. Changed decryption logic
 to use a series of decryption keys (#5312)

---
 src/zh/onemanhua/build.gradle                 |  2 +-
 .../extension/zh/onemanhua/Onemanhua.kt       | 25 +++++++++++++------
 2 files changed, 19 insertions(+), 8 deletions(-)

diff --git a/src/zh/onemanhua/build.gradle b/src/zh/onemanhua/build.gradle
index d1a5f67dd..d72ba634d 100644
--- a/src/zh/onemanhua/build.gradle
+++ b/src/zh/onemanhua/build.gradle
@@ -5,7 +5,7 @@ ext {
     extName = 'CoCoManhua (OhManhua)'
     pkgNameSuffix = 'zh.onemanhua'
     extClass = '.Onemanhua'
-    extVersionCode = 6
+    extVersionCode = 7
     libVersion = '1.2'
 }
 
diff --git a/src/zh/onemanhua/src/eu/kanade/tachiyomi/extension/zh/onemanhua/Onemanhua.kt b/src/zh/onemanhua/src/eu/kanade/tachiyomi/extension/zh/onemanhua/Onemanhua.kt
index 237b61fad..5e3d5b876 100644
--- a/src/zh/onemanhua/src/eu/kanade/tachiyomi/extension/zh/onemanhua/Onemanhua.kt
+++ b/src/zh/onemanhua/src/eu/kanade/tachiyomi/extension/zh/onemanhua/Onemanhua.kt
@@ -26,8 +26,9 @@ class Onemanhua : ParsedHttpSource() {
     override val name = "COCO漫画 (OH漫画)"
     override val baseUrl = "https://www.cocomanhua.com/"
 
-    private var decryptKey1 = "fw12558899ertyui"
-    private var decryptKey2 = "fw125gjdi9ertyui"
+    // Prepend with new decrypt keys (latest keys should appear at the start of the array)
+    private var decryptKey1Arr = arrayOf("fw122587mkertyui", "fw12558899ertyui")
+    private var decryptKey2Arr = arrayOf("fw125gjdi9ertyui")
 
     // Common
     private var commonSelector = "li.fed-list-item"
@@ -160,7 +161,7 @@ class Onemanhua : ParsedHttpSource() {
         // 1. get C_DATA from HTML
         val encodedData = getEncodedMangaData(document)
         // 2. decrypt C_DATA
-        val decryptedData = decodeAndDecrypt(encodedData, decryptKey1)
+        val decryptedData = decodeAndDecrypt("encodedData", encodedData, decryptKey1Arr)
 
         // 3. Extract values from C_DATA to formulate page urls
         val imgType = regexExtractStringValue(
@@ -215,7 +216,7 @@ class Onemanhua : ParsedHttpSource() {
             "enc_code2:\"(.+?)\"",
             "Unable to match for enc_code2"
         )
-        val decryptedRelativePath = decodeAndDecrypt(encodedRelativePath, decryptKey2)
+        val decryptedRelativePath = decodeAndDecrypt("encodedRelativePath", encodedRelativePath, decryptKey2Arr)
 
         // Decode and decrypt total pages
         val encodedTotalPages = regexExtractStringValue(
@@ -223,7 +224,7 @@ class Onemanhua : ParsedHttpSource() {
             "enc_code1:\"(.+?)\"",
             "Unable to match for enc_code1"
         )
-        val decryptedTotalPages = Integer.parseInt(decodeAndDecrypt(encodedTotalPages, decryptKey1))
+        val decryptedTotalPages = Integer.parseInt(decodeAndDecrypt("encodedTotalPages", encodedTotalPages, decryptKey1Arr))
 
         return mutableListOf<Page>().apply {
             for (i in startImg..decryptedTotalPages) {
@@ -250,9 +251,19 @@ class Onemanhua : ParsedHttpSource() {
         throw Error("Unable to match for C_DATA")
     }
 
-    private fun decodeAndDecrypt(value: String, key: String): String {
+    private fun decodeAndDecrypt(decodeName: String, value: String, keyArr: Array<String>): String {
         val decodedValue = String(Base64.decode(value, Base64.NO_WRAP))
-        return decryptAES(decodedValue, key)
+        for (key in keyArr) {
+            try {
+                return decryptAES(decodedValue, key)
+            } catch (ex: Exception) {
+                if (ex.toString() != "Decryption failed") {
+                    throw ex
+                }
+            }
+        }
+
+        throw Exception("Decryption failed ($decodeName exhausted keys)")
     }
 
     @SuppressLint("GetInstance")