#include <stdio.h>
#include <stdlib.h>
#include <string.h>

struct auth {
    char name[32];
    int auth;
};

struct auth *auth;
char *service;

int main(int argc, char **argv) {
    auth = malloc(sizeof(*auth));
    memset(auth, 0, sizeof(*auth));
    service = strdup("owner");

    if (strcmp(argv[1], "auth") == 0) {
        strcpy(auth->name, argv[2]);   /* no bounds check */
    }
    if (auth->auth) {
        printf("you have logged in already!\n");
    }
    return 0;
}