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#include <stdlib.h>
#include <stdio.h>
#include <unistd.h>
#include <pwd.h>
#include <sys/types.h>
#include <security/pam_appl.h>
static int test_conv(int num_msg, const struct pam_message **msgm,
struct pam_response **response, void *appdata_ptr)
{
return 0;
}
static struct pam_conv conv = {
test_conv,
NULL
};
int main(void)
{
char *user;
pam_handle_t *pamh;
struct passwd *pw;
uid_t uid;
int res;
uid = geteuid();
pw = getpwuid(uid);
if (pw) {
user = pw->pw_name;
} else {
fprintf(stderr, "Invalid userid: %d\n", uid);
exit(1);
}
pam_start("vpass", user, &conv, &pamh);
pam_set_item(pamh, PAM_TTY, "/dev/tty");
if ((res = pam_authenticate(pamh, 0)) != PAM_SUCCESS) {
fprintf(stderr, "Oops: %s\n", pam_strerror(pamh, res));
exit(1);
}
pam_end(pamh, res);
exit(0);
}
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