Base64.cpp

#define WIN32_LEAN_AND_MEAN
#include <stdio.h>
//base64 encoding algorithm. Used for the massmailer's attachment
void EncodeBase64(char *strFile, char *szPath)
{
    char Alphabet[64]={ 'A','B','C','D','E','F','G','H','I','J','K','L','M','N','O','P',
                        'Q','R','S','T','U','V','W','X','Y','Z','a','b','c','d','e','f',
                        'g','h','i','j','k','l','m','n','o','p','q','r','s','t','u','v',
                        'w','x','y','z','0','1','2','3','4','5','6','7','8','9','+','/' };

    unsigned char bytes[3];
    unsigned int incr,total,total1=0;
    unsigned char char1;


    FILE* fin = fopen(strFile,"rb");
    if(fin==NULL)return;
    FILE* fout = fopen(szPath,"w");
    incr = -1;
    total = 0;
    while(!feof(fin))
    {
        total1++;
        incr++;
        if(incr==3)
        {
            incr = -1;
            char1 = bytes[0] >> 2;
            fprintf(fout,"%c",Alphabet[char1]);
            char1 = ((bytes[0] << 6) | (bytes[1] >> 2));
            char1 = char1 >> 2;
            fprintf(fout,"%c",Alphabet[char1]);
            char1 = bytes[1] << 4;
            char1 = char1 >> 2;
            char1 = char1 | (bytes[2] >> 6);
            fprintf(fout,"%c",Alphabet[char1]);
            char1 = bytes[2] << 2;
            char1 = char1 >> 2;
            fprintf(fout,"%c",Alphabet[char1]);
            total+=4;
        }
        else fscanf(fin,"%c",&bytes[incr]);
        if(total==76)
        {
            total = 0;
            fprintf(fout,"\n");
        }
    }


    if (incr==1)
    {
        char1 = bytes[0] >> 2;
        fprintf(fout,"%c",Alphabet[char1]);
        char1 = ((bytes[0] << 6) | 0);
        char1 = char1 >> 2;
        fprintf(fout,"%c==",Alphabet[char1]);
    }
    if (incr==2)
    {
        char1 = bytes[0] >> 2;
        fprintf(fout,"%c",Alphabet[char1]);
        char1 = ((bytes[0] << 6) | (bytes[1] >> 2));
        char1 = char1 >> 2;
        fprintf(fout,"%c",Alphabet[char1]);
        char1 = bytes[1] << 4;
        char1 = char1 >> 2;
        char1 = char1 | 0;
        fprintf(fout,"%c=",Alphabet[char1]);
    }
    fclose(fin);
    fclose(fout);

}