30fe4a067c
Set adminstrative domain for the process when looking up user's
password or group info and when preparing for execve().
Include strings.h even if string.h exists since they may define
different things. Fixes warnings on AIX and others.
103 lines
2.8 KiB
C
103 lines
2.8 KiB
C
/*
|
|
* Copyright (c) 1999-2005, 2007, 2010
|
|
* Todd C. Miller <Todd.Miller@courtesan.com>
|
|
*
|
|
* Permission to use, copy, modify, and distribute this software for any
|
|
* purpose with or without fee is hereby granted, provided that the above
|
|
* copyright notice and this permission notice appear in all copies.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
|
|
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
|
|
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
|
|
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
|
|
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
|
|
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
|
|
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
|
|
*
|
|
* Sponsored in part by the Defense Advanced Research Projects
|
|
* Agency (DARPA) and Air Force Research Laboratory, Air Force
|
|
* Materiel Command, USAF, under agreement number F39502-99-1-0512.
|
|
*/
|
|
|
|
#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 /* STDC_HEADERS */
|
|
#ifdef HAVE_STRING_H
|
|
# include <string.h>
|
|
#endif /* HAVE_STRING_H */
|
|
#ifdef HAVE_STRINGS_H
|
|
# include <strings.h>
|
|
#endif /* HAVE_STRING_H */
|
|
#ifdef HAVE_UNISTD_H
|
|
# include <unistd.h>
|
|
#endif /* HAVE_UNISTD_H */
|
|
#include <pwd.h>
|
|
#include <krb.h>
|
|
|
|
#include "sudoers.h"
|
|
#include "sudo_auth.h"
|
|
|
|
int
|
|
kerb4_init(struct passwd *pw, char **promptp, sudo_auth *auth)
|
|
{
|
|
static char realm[REALM_SZ];
|
|
|
|
/* Don't try to verify root */
|
|
if (pw->pw_uid == 0)
|
|
return(AUTH_FAILURE);
|
|
|
|
/* Get the local realm, or retrun failure (no krb.conf) */
|
|
if (krb_get_lrealm(realm, 1) != KSUCCESS)
|
|
return(AUTH_FAILURE);
|
|
|
|
/* Stash a pointer to the realm (used in kerb4_verify) */
|
|
auth->data = (void *) realm;
|
|
|
|
return(AUTH_SUCCESS);
|
|
}
|
|
|
|
int
|
|
kerb4_verify(struct passwd *pw, char *pass, sudo_auth *auth)
|
|
{
|
|
char tkfile[sizeof(_PATH_SUDO_TIMEDIR) + 4 + MAX_UID_T_LEN];
|
|
char *realm = (char *) auth->data;
|
|
int error;
|
|
|
|
/*
|
|
* Set the ticket file to be in sudo sudo timedir so we don't
|
|
* wipe out other (real) kerberos tickets.
|
|
*/
|
|
(void) snprintf(tkfile, sizeof(tkfile), "%s/tkt%lu",
|
|
_PATH_SUDO_TIMEDIR, (unsigned long) pw->pw_uid);
|
|
(void) krb_set_tkt_string(tkfile);
|
|
|
|
/* Convert the password to a ticket given. */
|
|
error = krb_get_pw_in_tkt(pw->pw_name, "", realm, "krbtgt", realm,
|
|
DEFAULT_TKT_LIFE, pass);
|
|
|
|
switch (error) {
|
|
case INTK_OK:
|
|
dest_tkt(); /* we are done with the temp ticket */
|
|
return(AUTH_SUCCESS);
|
|
break;
|
|
case INTK_BADPW:
|
|
case KDC_PR_UNKNOWN:
|
|
break;
|
|
default:
|
|
(void) fprintf(stderr, "Warning: Kerberos error: %s\n",
|
|
krb_err_txt[error]);
|
|
}
|
|
|
|
return(AUTH_FAILURE);
|
|
}
|