/* See LICENSE file for copyright and license details. */
#include "libsecauth.h"
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#define PEPPER "pepper"
int
main(int argc, char *argv[])
{
struct libsecauth_spec spec;
char *message, *hash;
size_t size, off;
ssize_t r;
int fd;
if (argc != 2) {
fprintf(stderr, "usage: %s password", argv[0]);
return 1;
}
/* -- SERVER -- */
memset(&spec, 0, sizeof(spec));
spec.prehash = "$6$rounds=2000$salt1$";
spec.xferhash = "$1$salt2$";
spec.client_rounds = 100;
spec.server_rounds = 0;
size = libsecauth_format_spec(&spec, NULL, 0);
message = malloc(size);
if (!message) {
perror("malloc");
return 1;
}
libsecauth_format_spec(&spec, message, size);
/* -- CLIENT -- */
memset(&spec, 0, sizeof(spec));
if (libsecauth_parse_spec(&spec, message)) {
perror("libsecauth_parse_spec");
return 1;
}
hash = libsecauth_client_hash(&spec, argv[1]);
if (!hash) {
perror("libsecauth_client_hash");
return 1;
}
free(message);
message = hash;
/* -- SERVER -- */
memset(&spec, 0, sizeof(spec));
spec.prehash = "$6$rounds=2000$salt1$";
spec.xferhash = "$1$salt2$";
spec.client_rounds = 100;
spec.server_rounds = 0;
spec.posthash = "$6$rounds=1000$salt3$";
if (libsecauth_server_hash(&spec, message, PEPPER, &hash) < 0) {
perror("libsecauth_server_hash");
return 1;
}
spec.expected = hash;
free(message);
size = libsecauth_format_spec(&spec, NULL, 0);
message = malloc(size);
if (!message) {
perror("malloc");
return 1;
}
libsecauth_format_spec(&spec, message, size);
free(hash);
message[size - 1] = '\n';
fd = open("democonfig", O_WRONLY | O_CREAT | O_TRUNC, 0600);
if (fd < 0) {
perror("open");
return 1;
}
for (off = 0; off < size; off += (size_t)r) {
r = write(fd, &message[off], size - off);
if (r <= 0) {
perror("write");
return 1;
}
}
close(fd);
free(message);
return 0;
}
