#include <config.h>
#include <sys/types.h>
#include <sys/param.h>
#include <stdio.h>
#ifdef STDC_HEADERS
# include <stdlib.h>
# include <stddef.h>
#else
# ifdef HAVE_STDLIB_H
# include <stdlib.h>
# endif
#endif
#ifdef HAVE_STRING_H
# include <string.h>
#endif
#ifdef HAVE_STRINGS_H
# include <strings.h>
#endif
#ifdef HAVE_UNISTD_H
# include <unistd.h>
#endif
#include <pwd.h>
#include <auth.h>
#include <firewall.h>
#include "sudo.h"
#include "sudo_auth.h"
int
fwtk_init(pw, promptp, auth)
struct passwd *pw;
char **promptp;
sudo_auth *auth;
{
static Cfg *confp;
char resp[128];
if ((confp = cfg_read("sudo")) == (Cfg *)-1) {
warningx("cannot read fwtk config");
return(AUTH_FATAL);
}
if (auth_open(confp)) {
warningx("cannot connect to authentication server");
return(AUTH_FATAL);
}
if (auth_recv(resp, sizeof(resp))) {
warningx("lost connection to authentication server");
return(AUTH_FATAL);
}
if (strncmp(resp, "Authsrv ready", 13) != 0) {
warningx("authentication server error:\n%s", resp);
return(AUTH_FATAL);
}
return(AUTH_SUCCESS);
}
int
fwtk_verify(pw, prompt, auth)
struct passwd *pw;
char *prompt;
sudo_auth *auth;
{
char *pass;
char buf[SUDO_PASS_MAX + 12];
char resp[128];
int error;
(void) snprintf(buf, sizeof(buf), "authorize %s 'sudo'", pw->pw_name);
restart:
if (auth_send(buf) || auth_recv(resp, sizeof(resp))) {
warningx("lost connection to authentication server");
return(AUTH_FATAL);
}
if (strncmp(resp, "challenge ", 10) == 0) {
(void) snprintf(buf, sizeof(buf), "%s\nResponse: ", &resp[10]);
pass = tgetpass(buf, def_passwd_timeout * 60, tgetpass_flags);
if (pass && *pass == '\0') {
pass = tgetpass("Response [echo on]: ",
def_passwd_timeout * 60, tgetpass_flags | TGP_ECHO);
}
} else if (strncmp(resp, "chalnecho ", 10) == 0) {
pass = tgetpass(&resp[10], def_passwd_timeout * 60, tgetpass_flags);
} else if (strncmp(resp, "password", 8) == 0) {
pass = tgetpass(prompt, def_passwd_timeout * 60,
tgetpass_flags);
} else if (strncmp(resp, "display ", 8) == 0) {
fprintf(stderr, "%s\n", &resp[8]);
strlcpy(buf, "response dummy", sizeof(buf));
goto restart;
} else {
warningx("%s", resp);
return(AUTH_FATAL);
}
if (!pass) {
return(AUTH_INTR);
}
(void) snprintf(buf, sizeof(buf), "response '%s'", pass);
if (auth_send(buf) || auth_recv(resp, sizeof(resp))) {
warningx("lost connection to authentication server");
error = AUTH_FATAL;
goto done;
}
if (strncmp(resp, "ok", 2) == 0) {
error = AUTH_SUCCESS;
goto done;
}
if (strcmp(resp, "Permission Denied.") != 0)
warningx("%s", resp);
error = AUTH_FAILURE;
done:
zero_bytes(pass, strlen(pass));
zero_bytes(buf, strlen(buf));
return(error);
}
int
fwtk_cleanup(pw, auth)
struct passwd *pw;
sudo_auth *auth;
{
auth_close();
return(AUTH_SUCCESS);
}