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#include<stdio.h>
#include<stdlib.h>
#include<unistd.h>
void xor(int ac, char* av[]);
void help(char* av[]);
int main(int argc, char* argv[]) {
if (atoi(argv[1]) == 1){
xor(argc, argv);
printf("Message successfully encrypted! \n");
} else if (atoi(argv[1]) == 2) {
printf("Working \n");
} else {
printf("WARNING no command specified!! \n");
help(argv);
fprintf(stderr,"Exiting... \n");
exit(EXIT_FAILURE);
}
exit(EXIT_SUCCESS);
}
void xor(int ac, char* av[]) {
int opt;
char* defname = "critt";
int defout = 0;
char* output;
while ((opt = getopt(ac, av, "o:")) != -1) {
switch (opt) {
case 'o':
output = av[(optind-1)];
defout = 1;
break;
default:
fprintf(stderr,"Usage %s %s [-o output] \n", av[0], av[1]);
exit(EXIT_FAILURE);
}
}
if (defout == 0) {
printf("WARNING no command specified using default value critt \n");
output = defname;
}
FILE* mess_uno = fopen(av[2], "r");
FILE* mess_due = fopen(av[3], "r");
FILE* critt = fopen(output, "w");
int i = 1;
char a, b;
while(i != EOF) {
i = fscanf(mess_uno, "%c", &a);
fscanf(mess_due, "%c", &b);
if(i != EOF) {
fprintf(critt, "%c", a^b);
}
}
fclose(mess_uno);
fclose(mess_due);
fclose(critt);
return;
}
void help(char* av[]) {
printf("ONETIMEBLUH USAGE: \n");
printf("%s [COMMAND] [OPTIONS] \n \n", av[0]);
printf("COMMANDS: \n");
printf("1 -> encrypt encrypt message (argv[1]) using key (argv[2]) \n");
printf("2 -> keygen create key file \n \n");
printf("OPTIONS \n");
printf("-b number of bytes \n");
printf("-o output name \n");
return;
}
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