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#include <sodium/randombytes.h>
#include <stdio.h>
#include <string.h>
#include <sodium.h>
#include <unistd.h>
#include <ctype.h> //To Upper
long count_lines(FILE *File) {
char c;
long line_counter = 0;
while ((c = getc(File)) != EOF) {
if (c == '\n') {
line_counter++;
}
}
return(line_counter);
}
void randomize_case(char *a) { // Accepts a string as input
for (int i = 0; i < strlen(a); i++) {
int coin = randombytes_uniform(2); // Decide if the current character will be capitalized or lowercase
if (coin == 1) {
a[i] = toupper(a[i]);
}
}
}
void generate_integers(void) {
int length = 5; // TO-DO: Make random eventually
for (int i=0; i<length; i++) {
int random = randombytes_uniform(length);
printf("%d", random);
}
}
void generate_characters(char *set) {
int random_length;
// while (random_length <= 3) random_length
for (int i = 0; i < 5; i++) {
int random_character = randombytes_uniform(strlen(set));
printf("%c", set[random_character]);
}
}
int main (int argc, char **argv) {
char a, arg, str[20];
long line_counter, line_total, r;
FILE *words;
int index;
int w_flag = 0;
int c;
opterr = 0;
char character_set[28] = "!@#$%^&*()_-+={}[]|~`<,>.?:;";
char letter_set[26] = "abcdefghijklmnopqrstuvwxyz";
while ((c = getopt (argc, argv, "wh")) != -1)
switch(c) {
case 'w':
w_flag = 1;
break;
case 'h':
printf("usage: spwdg [options]\n"
"-h shows this help text\n"
"-w generates passwords using words\n");
return 0;
case '?':
if (optopt == 'c')
fprintf (stderr, "Option -%c requires an argument.\n", optopt);
else if (isprint (optopt))
fprintf (stderr, "Unknown option '-%c'.\n", optopt);
else
fprintf(stderr,"Unknown option character '\\x%x'.\n", optopt);
return 1;
default:
abort();
}
if (sodium_init() < 0) return 1;
words = fopen("word_list.txt", "r");
line_total = count_lines(words);
fseek(words, 0, SEEK_SET); // Reset pointer to beginning of file
char temp[2]; // Cannot copy c directly to str. needs a buffer
temp[1] = '\0'; // Makes the array a string
r = randombytes_uniform(line_total + 1); // Generates random line number to use for string
while ((a = getc(words)) != EOF) {
int i;
temp[0] = a;
if ((r == i) && (a != '\n')) {
strcat(str, temp);
}
if (a == '\n') {
i++; }
}
randomize_case(str);
generate_integers();
if (w_flag == 1) {
printf("%s", str);
}
else {
generate_characters(letter_set);
}
generate_characters(character_set);
printf("\n");
fclose(words);
}
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