opts.c

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

#include "banned.h"
#include "logger.h"
#include "opts.h"
#include "vec.h"

int cape_parse_opts(
    int argc,
    char *const *const argv,
    struct cape_opts *opts,     /* out */
    struct cape_string_vec *env /* out */
) {
    int c;
    int err = 0;
    while ((c = getopt(argc, argv, "e:Ihr:u:d:n")) != -1) {
        switch (c) {
        case 'h':
            cape_print_usage();
            exit(EXIT_SUCCESS);
        case 'n':
            opts->disable_networking = true;
            break;
        case 'd':
            opts->directory = optarg;
            break;
        case 'e':
            err = cape_string_vec_push(env, optarg);
            if (err) {
                cape_log_error("could not push environment variable");
                cape_string_vec_free(env);
                return -1;
            }
            break;
        case 'r':
            opts->root = optarg;
            break;
        case 'u':
            opts->user = optarg;
            break;
        case 'I':
            opts->insecure_mode = true;
            break;
        default:
            return -1;
        }
    }
    if (optind >= argc) {
        cape_log_error("no program specified");
        return -1;
    } else {
        return optind;
    }
}