CroakFang
111 lines
4.0 KiB
C#
111 lines
4.0 KiB
C#
/****************************************************************************
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*
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* Copyright (c) 2018 CRI Middleware Co., Ltd.
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*
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****************************************************************************/
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using System;
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using System.Runtime.InteropServices;
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/**
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* \addtogroup CRIWARE_COMMON_CLASS
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* @{
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*/
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namespace CriWare {
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/**
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* <summary>A class which provides the function for setting encrypted data playback.</summary>
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* <remarks>
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* <para header='Description'>Provides the function to set the decryption when playing encrypted data.<br/>
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* The decryption function can be initialized by calling the functions provided by this class.</para>
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* </remarks>
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*/
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public static class CriWareDecrypter {
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/**
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* <summary>Initialization (config specified)</summary>
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* <param name='config'>Initialization config</param>
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* <returns>Whether the initialization succeeded</returns>
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* <remarks>
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* <para header='Description'>Initializes the Decrytper.<br/>
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* This function is called automatically when CriWareInitializer is set.<br/></para>
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* <para header='Note'>Call this function after initializing the FileSystem library.</para>
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* </remarks>
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*/
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public static bool Initialize(CriWareDecrypterConfig config) {
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return Initialize(config.key, config.authenticationFile,
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config.enableAtomDecryption, config.enableManaDecryption);
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}
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/**
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* <summary>Initialization (parameter specified)</summary>
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* <param name='key'>Encryption key</param>
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* <param name='authenticationFile'>Authentication file path (absolute path or relative path from SreamingAssets)</param>
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* <param name='enableAtomDecryption'>Whether to decode the sound data</param>
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* <param name='enableManaDecryption'>Whether to decrypt the movie data</param>
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* <returns>Whether the initialization succeeded</returns>
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* <remarks>
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* <para header='Description'>Initializes the Decrytper.<br/>
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* This function is called automatically when CriWareInitializer is set.<br/></para>
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* <para header='Note'>Call this function after initializing the FileSystem library.</para>
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* </remarks>
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*/
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public static bool Initialize(string key, string authenticationFile, bool enableAtomDecryption, bool enableManaDecryption) {
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if (!CriFsPlugin.IsLibraryInitialized()) {
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return false;
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}
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/* バージョン番号が不正なライブラリには暗号キーを伝えない */
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/* 備考）不正に差し替えられたsoファイルを使用している可能性あり。 */
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bool isCorrectVersion = CriWare.Common.CheckBinaryVersionCompatibility();
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if (isCorrectVersion == false) {
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return false;
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}
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ulong decryptionKey = (key.Length == 0) ? 0 : System.Convert.ToUInt64(key);
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string authenticationPath = authenticationFile;
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if (CriWare.Common.IsStreamingAssetsPath(authenticationPath)) {
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authenticationPath = System.IO.Path.Combine(CriWare.Common.streamingAssetsPath, authenticationPath);
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}
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temporalStorage = decryptionKey ^ 0x00D47EB533AEF7E5UL;
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CRIWAREB9DA24BC(enableAtomDecryption, enableManaDecryption, CallbackFromNative, IntPtr.Zero);
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temporalStorage = 0;
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return true;
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}
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/* 変数の一時的な格納場所 */
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private static ulong temporalStorage = 0;
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#region Private Methods
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[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
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public delegate ulong CallbackFromNativeDelegate(System.IntPtr ptr1);
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[AOT.MonoPInvokeCallback(typeof(CallbackFromNativeDelegate))]
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private static ulong CallbackFromNative(System.IntPtr ptr1)
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{
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return temporalStorage;
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}
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#endregion
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#region DLL Import
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#if !CRIWARE_ENABLE_HEADLESS_MODE
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[DllImport(CriWare.Common.pluginName, CallingConvention = CriWare.Common.pluginCallingConvention)]
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public static extern int CRIWAREB9DA24BC(
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bool enable_atom_decryption, bool enable_mana_decryption, CallbackFromNativeDelegate func, IntPtr obj
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);
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#else
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public static int CRIWAREB9DA24BC(
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bool enable_atom_decryption, bool enable_mana_decryption, CallbackFromNativeDelegate func, IntPtr obj
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) { return 0; }
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#endif
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#endregion
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} // end of class
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} //namespace CriWare
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/** @} */
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/* --- end of file --- */
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