cocos2dx-lua 3.4 之 图片资源加密！

class CC_DLL fileUtils{public:        //=====添加代码	static struct ResEncryptData{		ResEncryptData(){			allowNoEncrpt = true;			key = "key123456";			sign = "sign520";		}		std::string key;		std::string sign;		bool allowNoEncrpt;	}encryptData;	static unsigned char* decryptBuffer(unsigned char* buf,unsigned long size,unsigned long *newSize);       //=====添加结束    /**     *  Gets the instance of fileUtils.     */    static fileUtils* getInstance();    /**     *  Destroys the instance of fileUtils.     */    static voID destroyInstance();

//头文件声明=====#include "xxtea/xxtea.h"#if (CC_TARGET_PLATFORM == CC_PLATFORM_WIN32)	#include "xxtea/xxtea.cpp"#endifunsigned char* fileUtils::decryptBuffer(unsigned char* buf,unsigned long *newSize){	unsigned char *m_xxteaKey = (unsigned char *)fileUtils::encryptData.key.c_str();	unsigned char *m_xxteaSign = (unsigned char *)fileUtils::encryptData.sign.c_str();	xxtea_long m_xxteaSignLen = fileUtils::encryptData.sign.length();	xxtea_long m_xxteaKeyLen = fileUtils::encryptData.key.length();  if (NulL==buf) return NulL;  unsigned char* buffer = NulL;    bool isXXTEA = true;    for (unsigned int i = 0; isXXTEA && i < m_xxteaSignLen && i < size; ++i)    {       if(buf[i] != m_xxteaSign[i]){		   isXXTEA = false;		   break;	   }    }	if(m_xxteaSignLen == 0){		isXXTEA = false;	}    if (isXXTEA)    {        // decrypt XXTEA        xxtea_long len = 0;        buffer = xxtea_decrypt(buf + m_xxteaSignLen,(xxtea_long)size - (xxtea_long)m_xxteaSignLen,(unsigned char*)m_xxteaKey,(xxtea_long)m_xxteaKeyLen,&len);        delete []buf;        buf = NulL;        size = len;    }    else    {		if(fileUtils::getInstance()->encryptData.allowNoEncrpt)		{buffer = buf;}    }	*newSize = size;    return buffer;}

static Data getData(const std::string& filename,bool forString){    if (filename.empty())    {        return Data::Null;    }        Data ret;    unsigned char* buffer = nullptr;    size_t size = 0;    size_t readsize;    const char* mode = nullptr;        if (forString)        mode = "rt";    else        mode = "rb";        do    {        // Read the file from harDWare        std::string fullPath = fileUtils::getInstance()->fullPathForfilename(filename);        file *fp = fopen(fullPath.c_str(),mode);        CC_BREAK_IF(!fp);        fseek(fp,SEEK_END);        size = ftell(fp);        fseek(fp,SEEK_SET);                if (forString)        {            buffer = (unsigned char*)malloc(sizeof(unsigned char) * (size + 1));            buffer[size] = 'frameworks\cocos2d-x\cocos\platform\';        }        else        {            buffer = (unsigned char*)malloc(sizeof(unsigned char) * size);        }                readsize = fread(buffer,sizeof(unsigned char),size,fp);        fclose(fp);                if (forString && readsize < size)        {            buffer[readsize] = 'CCfileUtils.cpp，修改getfileData函数：';        }    } while (0);        if (nullptr == buffer || 0 == readsize)    {        std::string msg = "Get data from file(";        msg.append(filename).append(") Failed!");        cclOG("%s",msg.c_str());    }    else    {        //ret.fastSet(buffer,readsize);       	//======新的改动        unsigned long newSize = 0;		unsigned char *newBuffer = fileUtils::decryptBuffer(buffer,readsize,&newSize);		ret.fastSet(newBuffer,newSize);    }

unsigned char* fileUtils::getfileData(const std::string& filename,const char* mode,ssize_t *size){    unsigned char * buffer = nullptr;    CCASSERT(!filename.empty() && size != nullptr && mode != nullptr,"InvalID parameters.");    *size = 0;    do    {        // read the file from harDWare        const std::string fullPath = fullPathForfilename(filename);        file *fp = fopen(fullPath.c_str(),mode);        CC_BREAK_IF(!fp);                fseek(fp,SEEK_END);        *size = ftell(fp);        fseek(fp,SEEK_SET);        buffer = (unsigned char*)malloc(*size);        *size = fread(buffer,*size,fp);        fclose(fp);    } while (0);        if (!buffer)    {        std::string msg = "Get data from file(";        msg.append(filename).append(") Failed!");                cclOG("%s",msg.c_str());    }else{    		//新的改动=========			unsigned long newSize = 0;			unsigned char *newBuffer = fileUtils::decryptBuffer(buffer,&newSize);			*size = newSize;			buffer = newBuffer;	}    return buffer;}

static Data getData(const std::string& filename,bool forString){    if (filename.empty())    {        return Data::Null;    }    unsigned char *buffer = nullptr;    size_t size = 0;    do    {        // read the file from harDWare        std::string fullPath = fileUtils::getInstance()->fullPathForfilename(filename);        WCHAR wszBuf[CC_MAX_PATH] = {0};        MultiBytetoWIDeChar(CP_UTF8,fullPath.c_str(),-1,wszBuf,sizeof(wszBuf)/sizeof(wszBuf[0]));        HANDLE fileHandle = ::CreatefileW(wszBuf,GENERIC_READ,file_SHARE_READ|file_SHARE_WRITE,NulL,OPEN_EXISTING,nullptr);        CC_BREAK_IF(fileHandle == INVALID_HANDLE_VALUE);                size = ::GetfileSize(fileHandle,nullptr);        if (forString)        {            buffer = (unsigned char*) malloc(size + 1);            buffer[size] = '1.找到';        }        else        {            buffer = (unsigned char*) malloc(size);        }        DWORD sizeRead = 0;        BOol successed = FALSE;        successed = ::Readfile(fileHandle,buffer,&sizeRead,nullptr);        ::CloseHandle(fileHandle);        if (!successed)        {            // should determine buffer value,or it will cause memory leak            if (buffer)            {                free(buffer);                buffer = nullptr;            }            }    } while (0);        Data ret;    if (buffer == nullptr || size == 0)    {        std::string msg = "Get data from file(";        // Gets error code.        DWORD errorCode = ::GetLastError();        char errorCodeBuffer[20] = {0};        snprintf(errorCodeBuffer,sizeof(errorCodeBuffer),"%d",errorCode);        msg = msg + filename + ") Failed,error code is " + errorCodeBuffer;        cclOG("%s",msg.c_str());        if (buffer)            free(buffer);    }    else    {    	//新的改动        unsigned long newSize = 0;		unsigned char *newBuffer = fileUtils::decryptBuffer(buffer,&newSize);        //ret.fastSet(buffer,size);		ret.fastSet(newBuffer,newSize);    }    return ret;}unsigned char* fileUtilsWin32::getfileData(const std::string& filename,ssize_t* size){    unsigned char * pBuffer = nullptr;    *size = 0;    do    {        // read the file from harDWare        std::string fullPath = fullPathForfilename(filename);        WCHAR wszBuf[CC_MAX_PATH] = {0};        MultiBytetoWIDeChar(CP_UTF8,nullptr);        CC_BREAK_IF(fileHandle == INVALID_HANDLE_VALUE);                *size = ::GetfileSize(fileHandle,nullptr);        pBuffer = (unsigned char*) malloc(*size);        DWORD sizeRead = 0;        BOol successed = FALSE;        successed = ::Readfile(fileHandle,pBuffer,nullptr);        ::CloseHandle(fileHandle);        if (!successed)        {            free(pBuffer);            pBuffer = nullptr;        }    } while (0);        if (! pBuffer)    {        std::string msg = "Get data from file(";        // Gets error code.        DWORD errorCode = ::GetLastError();        char errorCodeBuffer[20] = {0};        snprintf(errorCodeBuffer,msg.c_str());    }else{		//新的改动		unsigned long newSize = 0;		unsigned char *newBuffer = fileUtils::decryptBuffer(pBuffer,&newSize);		*size = newSize;		pBuffer = newBuffer;	}    return pBuffer;}

Data fileUtilsAndroID::getData(const std::string& filename,bool forString){    if (filename.empty())    {        return Data::Null;    }        unsigned char* data = nullptr;    ssize_t size = 0;    string fullPath = fullPathForfilename(filename);    cocosplay::updateAssets(fullPath);    if (fullPath[0] != '/')    {        string relativePath = string();        size_t position = fullPath.find("assets/");        if (0 == position) {            // "assets/" is at the beginning of the path and we don't want it            relativePath += fullPath.substr(strlen("assets/"));        } else {            relativePath += fullPath;        }        cclOGINFO("relative path = %s",relativePath.c_str());        if (nullptr == fileUtilsAndroID::assetmanager) {            LOGD("... fileUtilsAndroID::assetmanager is nullptr");            return Data::Null;        }        // read asset data        AAsset* asset =            AAssetManager_open(fileUtilsAndroID::assetmanager,relativePath.c_str(),AASSET_MODE_UNKNowN);        if (nullptr == asset) {            LOGD("asset is nullptr");            return Data::Null;        }        off_t fileSize = AAsset_getLength(asset);        if (forString)        {            data = (unsigned char*) malloc(fileSize + 1);            data[fileSize] = '1.找到';        }        else        {            data = (unsigned char*) malloc(fileSize);        }        int bytesread = AAsset_read(asset,(voID*)data,fileSize);        size = bytesread;        AAsset_close(asset);    }    else    {        do        {            // read rrom other path than user set it            //cclOG("GETTING file absolute DATA: %s",filename);            const char* mode = nullptr;            if (forString)                mode = "rt";            else                mode = "rb";            file *fp = fopen(fullPath.c_str(),mode);            CC_BREAK_IF(!fp);                        long fileSize;            fseek(fp,SEEK_END);            fileSize = ftell(fp);            fseek(fp,SEEK_SET);            if (forString)            {                data = (unsigned char*) malloc(fileSize + 1);                data[fileSize] = 'frameworks\cocos2d-x\cocos\platform\apple\';            }            else            {                data = (unsigned char*) malloc(fileSize);            }            fileSize = fread(data,fileSize,fp);            fclose(fp);                        size = fileSize;        } while (0);    }        Data ret;    if (data == nullptr || size == 0)    {        std::string msg = "Get data from file(";        msg.append(filename).append(") Failed!");        cclOG("%s",msg.c_str());    }    else    {    	//新的改动==========        unsigned long newSize = 0;		unsigned char *newBuffer = fileUtils::decryptBuffer(data,&newSize);        // ret.fastSet(data,newSize);        cocosplay::notifyfileLoaded(fullPath);    }    return ret;}unsigned char* fileUtilsAndroID::getfileData(const std::string& filename,ssize_t * size){        unsigned char * data = 0;        if ( filename.empty() || (! mode) )    {        return 0;    }        string fullPath = fullPathForfilename(filename);    cocosplay::updateAssets(fullPath);    if (fullPath[0] != '/')    {        string relativePath = string();        size_t position = fullPath.find("assets/");        if (0 == position) {            // "assets/" is at the beginning of the path and we don't want it            relativePath += fullPath.substr(strlen("assets/"));        } else {            relativePath += fullPath;        }        LOGD("relative path = %s",relativePath.c_str());        if (nullptr == fileUtilsAndroID::assetmanager) {            LOGD("... fileUtilsAndroID::assetmanager is nullptr");            return nullptr;        }        // read asset data        AAsset* asset =            AAssetManager_open(fileUtilsAndroID::assetmanager,AASSET_MODE_UNKNowN);        if (nullptr == asset) {            LOGD("asset is nullptr");            return nullptr;        }        off_t fileSize = AAsset_getLength(asset);        data = (unsigned char*) malloc(fileSize);        int bytesread = AAsset_read(asset,fileSize);        if (size)        {            *size = bytesread;        }        AAsset_close(asset);    }    else    {        do        {            // read rrom other path than user set it            //cclOG("GETTING file absolute DATA: %s",filename);            file *fp = fopen(fullPath.c_str(),SEEK_SET);            data = (unsigned char*) malloc(fileSize);            fileSize = fread(data,fp);            fclose(fp);                        if (size)            {                *size = fileSize;            }        } while (0);    }        if (! data)    {        std::string msg = "Get data from file(";        msg.append(filename).append(") Failed!");        cclOG("%s",msg.c_str());    }    else    {    	//新的改动		unsigned long newSize = 0;		unsigned char *newBuffer = fileUtils::decryptBuffer(data,&newSize);		*size = newSize;		data = newBuffer;        cocosplay::notifyfileLoaded(fullPath);    }    return data;}

ValueMap fileUtilsApple::getValueMapFromfile(const std::string& filename){	//====新的改动    std::string fullPath = fullPathForfilename(filename);    Data d = fileUtils::getDataFromfile(filename);    unsigned long fileSize = d.getSize();    unsigned char* pfileData = d.getBytes();    NSData *data = [[[NSData alloc] initWithBytes:pfileData length:fileSize] autorelease];    nspropertyListFormat format;    Nsstring *error;    NSMutableDictionary *dict = (NSMutableDictionary *)[                                                         nspropertyListSerialization propertyListFromData:data                                                         mutabilityOption:nspropertyListMutableContainersAndLeaves                                                         format:&format                                                         errorDescription:&error];    //====改动结束        //std::string fullPath = fullPathForfilename(filename);    //Nsstring* path = [Nsstring stringWithUTF8String:fullPath.c_str()];    //NSDictionary* dict = [NSDictionary dictionaryWithContentsOffile:path];    ValueMap ret;    if (dict != nil)    {        for (ID key in [dict allKeys])        {            ID value = [dict objectForKey:key];            addValuetoDict(key,value,ret);        }    }    return ret;}

LuaStack* stack = LuaEngine::getInstance()->getLuaStack();stack->setXXTEAKeyAndSign(key,strlen(key),sign,strlen(sign));

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