If you give someone a program , you will frustrate them for a day; if you teach them how to program, you will frustrate them for a lifetime.IT 這段話的意思是，如果你交給某人一隻程式，你將折磨他一整天;如果你教會某人如何寫程式，你將折磨他一輩子。

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BloggerAds

Jan 01 Mon 2018 02:22
quick-cocos2d-x 2.2.3 rc版本中 crypto.md5file() 的C++實現在ANDROID上有BUG - geniusalex

文章出處

原來的版本是用fopen打開文件的，如果要從ANDROID的APK中取文件，直接就洗白了
修改如下

void CCCrypto::MD5File(const char* path, unsigned char* output)
{
    unsigned long len = 0;
    //to make sure we can get data of files easily from ios,android,pc etc.
    //we use CCFileUtils::sharedFileUtils()->getFileData
    unsigned char* pData = CCFileUtils::sharedFileUtils()->getFileData(path, "r", &len);
    if (pData == NULL || len == 0){
        CCLOG("CCCrypto::MD5File() can't open file %s", path);
        return;
    }
    
    MD5_CTX ctx;
    MD5_Init(&ctx);

    MD5_Update(&ctx, pData, len);
    MD5_Final(output, &ctx);

    //delete data as CCFileUtils::sharedFileUtils()->getFileData claimed.
    if (pData != NULL)
    delete[] pData;
}