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#include <u.h>
#include <libc.h>
#include <stdio.h>
#include "base64.h"
int lower(int a);
void main(int argc,char** argv) {
char opt = ' ';
if (argc > 1)
opt = lower(argv[1][0]);
if ( ((argc < 4) && (opt!='b' && opt!='t')) ) {
puts("\nbase64.c [Encode/Decode]");
puts("------------------------------------");
printf("File mode\n");
printf("\tUse the following to encode:\n\t%s e(ncode) IN_filepath OUT_filepath\n",argv[0]);
printf("\tUse the following to decode:\n\t%s d(ecode) IN_filepath OUT_filepath\n",argv[0]);
printf("\nText mode (outputs to stdout):\n");
printf("\tUse the following to encode:\n\t%s t(ext) IN_Text\n",argv[0]);
printf("\tUse the following to decode:\n\t%s b(ase64) IN_Base64\n",argv[0]);
puts("\nERROR: insufficient or incorrect parameters...");
exits("1");
}
int bcoded = 0;
switch(opt) {
case 'd':
puts("\nDECODING");
bcoded = b64_decode(argv[2],argv[3]);
break;
case 'e':
puts("\nENCODING");
bcoded = b64_encodef(argv[2],argv[3]);
break;
case 't':
puts("\nENCODING from text to base64");
int tlen = strlen(argv[2]);
char *b64 = (char *)malloc(1 + (sizeof(char) * b64e_size(tlen)));
if (b64 == NULL) {
printf("Error: cannot allocate memory for output\n");
exits("1"); /* End program with error status. */
}
bcoded = b64_encode(argv[2],tlen,b64);
printf("Encoded base64 from text: %s", b64);
free(b64);
break;
case 'b':
puts("\nDECODING from base64 to text");
int blen = strlen(argv[2]);
char *txt = malloc(1 + (sizeof(char) * b64d_size(blen)));
if (txt == NULL) {
printf("Error: cannot allocate memory for output\n");
exits("1"); /* End program with error status. */
}
//bcoded = b64_decode(argv[2],blen,txt);
txt[bcoded] = '\0';
printf("Decoded text from base64: %s", txt);
free(txt);
break;
default:
puts("\nINVALID OPTION");
bcoded = -1;
}
printf("\nBytes encoded/decoded: %i\n",bcoded);
}
int lower(int a) { //https://stackoverflow.com/a/15709023/883015
if ((a >= 0x41) && (a <= 0x5A))
a |= 0x20;
return a;
}
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