Get rid of more Kerberos 4 code.

This commit is contained in:
wiz 2006-03-23 23:33:28 +00:00
parent ade0b1e1b5
commit 54cd24faa5
5 changed files with 17 additions and 423 deletions

View File

@ -1,4 +1,4 @@
/* $NetBSD: k5login.c,v 1.26 2005/01/20 15:41:14 xtraeme Exp $ */
/* $NetBSD: k5login.c,v 1.27 2006/03/23 23:33:28 wiz Exp $ */
/*-
* Copyright (c) 1990 The Regents of the University of California.
@ -51,16 +51,13 @@
#if 0
static char sccsid[] = "@(#)klogin.c 5.11 (Berkeley) 7/12/92";
#endif
__RCSID("$NetBSD: k5login.c,v 1.26 2005/01/20 15:41:14 xtraeme Exp $");
__RCSID("$NetBSD: k5login.c,v 1.27 2006/03/23 23:33:28 wiz Exp $");
#endif /* not lint */
#ifdef KERBEROS5
#include <sys/param.h>
#include <sys/syslog.h>
#include <krb5/krb5.h>
#ifdef KERBEROS
#include <kerberosIV/krb.h>
#endif
#include <pwd.h>
#include <netdb.h>
#include <stdio.h>
@ -82,9 +79,6 @@ extern int login_krb5_forwardable_tgt;
extern int has_ccache;
static char tkt_location[MAXPATHLEN];
#ifdef KERBEROS
char krb4tkfile[MAXPATHLEN];
#endif
static krb5_creds forw_creds;
int have_forward;
static krb5_principal me, server;
@ -95,11 +89,6 @@ int k5_verify_creds(krb5_context, krb5_ccache);
int k5login(struct passwd *, char *, char *, char *);
void k5destroy(void);
#ifdef KERBEROS
static krb5_error_code
krb5_to4 (struct passwd *pw, krb5_context context, krb5_ccache id);
#endif
#ifndef krb5_realm_length
#define krb5_realm_length(r) ((r).length)
#endif
@ -321,59 +310,6 @@ nuke_ccache_contents:
return (kerror != 0);
}
/*
* Get krb4 credentials if needed
*/
#ifdef KERBEROS
static krb5_error_code
krb5_to4 (struct passwd *pw, krb5_context context, krb5_ccache id)
{
if (krb5_config_get_bool(context, NULL,
"libdefaults",
"krb4_get_tickets",
NULL)) {
CREDENTIALS c;
krb5_creds mcred, cred;
krb5_error_code ret;
krb5_principal princ;
ret = krb5_cc_get_principal (context, id, &princ);
if (ret)
return ret;
ret = krb5_make_principal(context, &mcred.server,
princ->realm,
"krbtgt",
princ->realm,
NULL);
krb5_free_principal (context, princ);
if (ret)
return ret;
ret = krb5_cc_retrieve_cred(context, id, 0, &mcred, &cred);
if(ret == 0) {
ret = krb524_convert_creds_kdc_ccache(context, id,
&cred, &c);
if(ret == 0) {
snprintf(krb4tkfile, sizeof(krb4tkfile),
"%s%d",TKT_ROOT, pw->pw_uid);
krb_set_tkt_string(krb4tkfile);
tf_setup(&c, c.pname, c.pinst);
if (chown(krb4tkfile, pw->pw_uid,
pw->pw_gid) < 0)
syslog(LOG_ERR,
"chown tkfile (%s): %m",
krb4tkfile);
}
memset(&c, 0, sizeof(c));
krb5_free_creds_contents(context, &cred);
}
krb5_free_principal(context, mcred.server);
}
return 0;
}
#endif /* KERBEROS */
/*
* Attempt to log the user in using Kerberos authentication
*
@ -518,11 +454,6 @@ k5login(struct passwd *pw, char *instance, char *localhost, char *password)
if (k5_verify_creds(kcontext, ccache) < 0)
return (1);
#ifdef KERBEROS
if ((kerror = krb5_to4(pw, kcontext, ccache)) != 0)
krb5_warn(kcontext, kerror, "error converting krb4 creds");
#endif
/* Success */
notickets = 0;
return (0);

View File

@ -1,273 +0,0 @@
/* $NetBSD: klogin.c,v 1.20 2005/01/20 15:41:14 xtraeme Exp $ */
/*-
* Copyright (c) 1990, 1993, 1994
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/cdefs.h>
#ifndef lint
#if 0
static char sccsid[] = "@(#)klogin.c 8.3 (Berkeley) 4/2/94";
#endif
__RCSID("$NetBSD: klogin.c,v 1.20 2005/01/20 15:41:14 xtraeme Exp $");
#endif /* not lint */
#ifdef KERBEROS
#include <sys/param.h>
#include <sys/syslog.h>
#include <des.h>
#include <kerberosIV/krb.h>
#include <err.h>
#include <netdb.h>
#include <pwd.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#define INITIAL_TICKET "krbtgt"
#define VERIFY_SERVICE "rcmd"
int notickets;
int krb_configured;
char *krbtkfile_env;
char *tty;
extern int has_ccache;
static char tkt_location[MAXPATHLEN]; /* a pointer to this is returned... */
int klogin(struct passwd *, char *, char *, char *);
void kdestroy(void);
/*
* Attempt to log the user in using Kerberos authentication
*
* return 0 on success (will be logged in)
* 1 if Kerberos failed (try local password in login)
*/
int
klogin(struct passwd *pw, char *instance, char *localhost, char *password)
{
int kerror;
AUTH_DAT authdata;
KTEXT_ST ticket;
struct hostent *hp;
unsigned long faddr;
char realm[REALM_SZ], savehost[MAXHOSTNAMELEN];
krb_configured = 1;
/*
* Root logins don't use Kerberos.
* If we have a realm, try getting a ticket-granting ticket
* and using it to authenticate. Otherwise, return
* failure so that we can try the normal passwd file
* for a password. If that's ok, log the user in
* without issuing any tickets.
*/
if (strcmp(pw->pw_name, "root") == 0 ||
krb_get_lrealm(realm, 0) != KSUCCESS) {
krb_configured = 0;
return (1);
}
/*
* get TGT for local realm
* tickets are stored in a file named TKT_ROOT plus uid plus tty
* except for user.root tickets.
*/
if (strcmp(instance, "root") != 0)
(void)snprintf(tkt_location, sizeof tkt_location, "%s%d.%s",
TKT_ROOT, pw->pw_uid, tty);
else
(void)snprintf(tkt_location, sizeof tkt_location,
"%s_root_%d.%s", TKT_ROOT, pw->pw_uid, tty);
krbtkfile_env = tkt_location;
has_ccache = 1;
(void)krb_set_tkt_string(tkt_location);
/*
* Set real as well as effective ID to 0 for the moment,
* to make the kerberos library do the right thing.
*/
if (setuid(0) < 0) {
warnx("setuid");
return (1);
}
kerror = krb_get_pw_in_tkt(pw->pw_name, instance,
realm, INITIAL_TICKET, realm, DEFAULT_TKT_LIFE, password);
/*
* If we got a TGT, get a local "rcmd" ticket and check it so as to
* ensure that we are not talking to a bogus Kerberos server.
*
* There are 2 cases where we still allow a login:
* 1: the VERIFY_SERVICE doesn't exist in the KDC
* 2: local host has no srvtab, as (hopefully) indicated by a
* return value of RD_AP_UNDEC from krb_rd_req().
*/
if (kerror != INTK_OK) {
if (kerror != INTK_BADPW && kerror != KDC_PR_UNKNOWN) {
syslog(LOG_ERR, "Kerberos intkt error: %s",
krb_err_txt[kerror]);
dest_tkt();
}
return (1);
}
if (chown(TKT_FILE, pw->pw_uid, pw->pw_gid) < 0)
syslog(LOG_ERR, "chown tkfile (%s): %m", TKT_FILE);
(void)strlcpy(savehost, krb_get_phost(localhost), sizeof(savehost));
/*
* if the "VERIFY_SERVICE" doesn't exist in the KDC for this host,
* still allow login with tickets, but log the error condition.
*/
kerror = krb_mk_req(&ticket, VERIFY_SERVICE, savehost, realm, 33);
if (kerror == KDC_PR_UNKNOWN) {
syslog(LOG_NOTICE,
"warning: TGT not verified (%s); %s.%s not registered, or srvtab is wrong?",
krb_err_txt[kerror], VERIFY_SERVICE, savehost);
notickets = 0;
/*
* but for security, don't allow root instances in under
* this condition!
*/
if (strcmp(instance, "root") == 0) {
syslog(LOG_ERR, "Kerberos %s root instance login refused\n",
pw->pw_name);
dest_tkt();
return (1);
}
return (0);
}
if (kerror != KSUCCESS) {
warnx("unable to use TGT: (%s)", krb_err_txt[kerror]);
syslog(LOG_NOTICE, "unable to use TGT: (%s)",
krb_err_txt[kerror]);
dest_tkt();
return (1);
}
if (!(hp = gethostbyname(localhost))) {
syslog(LOG_ERR, "couldn't get local host address");
dest_tkt();
return (1);
}
memmove((void *)&faddr, (void *)hp->h_addr, sizeof(faddr));
kerror = krb_rd_req(&ticket, VERIFY_SERVICE, savehost, faddr,
&authdata, "");
if (kerror == KSUCCESS) {
notickets = 0;
return (0);
}
/* undecipherable: probably didn't have a srvtab on the local host */
if (kerror == RD_AP_UNDEC) {
syslog(LOG_NOTICE, "krb_rd_req: (%s)\n", krb_err_txt[kerror]);
dest_tkt();
return (1);
}
/* failed for some other reason */
warnx("unable to verify %s ticket: (%s)", VERIFY_SERVICE,
krb_err_txt[kerror]);
syslog(LOG_NOTICE, "couldn't verify %s ticket: %s", VERIFY_SERVICE,
krb_err_txt[kerror]);
dest_tkt();
return (1);
}
void
kdestroy(void)
{
char *file = krbtkfile_env;
int i, fd;
extern int errno;
struct stat statb;
char buf[BUFSIZ];
#ifdef TKT_SHMEM
char shmidname[MAXPATHLEN];
#endif /* TKT_SHMEM */
if (krbtkfile_env == NULL)
return;
errno = 0;
if (lstat(file, &statb) < 0)
goto out;
if (!S_ISREG(statb.st_mode)
#ifdef notdef
|| statb.st_mode & 077
#endif
)
goto out;
if ((fd = open(file, O_RDWR, 0)) < 0)
goto out;
memset(buf, 0, BUFSIZ);
for (i = 0; i < statb.st_size; i += BUFSIZ)
if (write(fd, buf, BUFSIZ) != BUFSIZ) {
(void) fsync(fd);
(void) close(fd);
goto out;
}
(void) fsync(fd);
(void) close(fd);
(void) unlink(file);
out:
if (errno != 0)
return;
#ifdef TKT_SHMEM
/*
* handle the shared memory case
*/
(void)strlcpy(shmidname, file, sizeof(shmidname));
(void)strlcat(shmidname, ".shm", sizeof(shmidname));
if (krb_shm_dest(shmidname) != KSUCCESS)
return;
#endif /* TKT_SHMEM */
return;
}
#endif

View File

@ -1,4 +1,4 @@
/* $NetBSD: login.c,v 1.88 2006/03/08 02:49:18 jnemeth Exp $ */
/* $NetBSD: login.c,v 1.89 2006/03/23 23:33:28 wiz Exp $ */
/*-
* Copyright (c) 1980, 1987, 1988, 1991, 1993, 1994
@ -40,7 +40,7 @@ __COPYRIGHT(
#if 0
static char sccsid[] = "@(#)login.c 8.4 (Berkeley) 4/2/94";
#endif
__RCSID("$NetBSD: login.c,v 1.88 2006/03/08 02:49:18 jnemeth Exp $");
__RCSID("$NetBSD: login.c,v 1.89 2006/03/23 23:33:28 wiz Exp $");
#endif /* not lint */
/*
@ -94,7 +94,6 @@ __RCSID("$NetBSD: login.c,v 1.88 2006/03/08 02:49:18 jnemeth Exp $");
#ifdef KERBEROS5
int login_krb5_get_tickets = 1;
int login_krb4_get_tickets = 0;
int login_krb5_forwardable_tgt = 0;
int login_krb5_retain_ccache = 0;
#endif
@ -117,17 +116,13 @@ void sigint(int);
void sleepexit(int);
const char *stypeof(const char *);
void timedout(int);
#if defined(KERBEROS)
int klogin(struct passwd *, char *, char *, char *);
void kdestroy(void);
#endif
#ifdef KERBEROS5
int k5login(struct passwd *, char *, char *, char *);
void k5destroy(void);
int k5_read_creds(char*);
int k5_write_creds(void);
#endif
#if defined(KERBEROS) || defined(KERBEROS5)
#if defined(KERBEROS5)
void dofork(void);
#endif
void decode_ss(const char *);
@ -144,27 +139,17 @@ void usage(void);
*/
u_int timeout = 300;
#if defined(KERBEROS) || defined(KERBEROS5)
#if defined(KERBEROS5)
int notickets = 1;
char *instance;
int has_ccache = 0;
#endif
#ifdef KERBEROS
extern char *krbtkfile_env;
extern int krb_configured;
#endif
#ifdef KERBEROS5
extern krb5_context kcontext;
extern int have_forward;
extern char *krb5tkfile_env;
extern int krb5_configured;
#endif
#if defined(KERBEROS) && defined(KERBEROS5)
#define KERBEROS_CONFIGURED (krb_configured || krb5_configured)
#elif defined(KERBEROS)
#define KERBEROS_CONFIGURED krb_configured
#elif defined(KERBEROS5)
#if defined(KERBEROS5)
#define KERBEROS_CONFIGURED krb5_configured
#endif
@ -198,7 +183,7 @@ main(int argc, char *argv[])
#ifdef KERBEROS5
krb5_error_code kerror;
#endif
#if defined(KERBEROS) || defined(KERBEROS5)
#if defined(KERBEROS5)
int got_tickets = 0;
#endif
#ifdef LOGIN_CAP
@ -353,9 +338,6 @@ main(int argc, char *argv[])
#endif /* KERBEROS5 */
for (cnt = 0;; ask = 1) {
#if defined(KERBEROS)
kdestroy();
#endif
#if defined(KERBEROS5)
if (login_krb5_get_tickets)
k5destroy();
@ -365,12 +347,6 @@ main(int argc, char *argv[])
getloginname();
}
rootlogin = 0;
#ifdef KERBEROS
if ((instance = strchr(username, '.')) != NULL)
*instance++ = '\0';
else
instance = "";
#endif
#ifdef KERBEROS5
if ((instance = strchr(username, '/')) != NULL)
*instance++ = '\0';
@ -452,20 +428,6 @@ main(int argc, char *argv[])
rval = 1;
goto skip;
}
#ifdef KERBEROS
if (
#ifdef KERBEROS5
/* allow a user to get both krb4 and krb5 tickets, if
* desired. If krb5 is compiled in, the default action
* is to ignore krb4 and get krb5 tickets, but the user
* can override this in the krb5.conf. */
login_krb4_get_tickets &&
#endif
klogin(pwd, instance, localhost, p) == 0) {
rval = 0;
got_tickets = 1;
}
#endif
#ifdef KERBEROS5
if (login_krb5_get_tickets &&
k5login(pwd, instance, localhost, p) == 0) {
@ -473,7 +435,7 @@ main(int argc, char *argv[])
got_tickets = 1;
}
#endif
#if defined(KERBEROS) || defined(KERBEROS5)
#if defined(KERBEROS5)
if (got_tickets)
goto skip;
#endif
@ -627,13 +589,9 @@ main(int argc, char *argv[])
if (ttyaction(ttyn, "login", pwd->pw_name))
(void)printf("Warning: ttyaction failed.\n");
#if defined(KERBEROS) || defined(KERBEROS5)
#if defined(KERBEROS5)
/* Fork so that we can call kdestroy */
if (
#ifdef KERBEROS5
! login_krb5_retain_ccache &&
#endif
has_ccache)
if (! login_krb5_retain_ccache && has_ccache)
dofork();
#endif
@ -700,10 +658,6 @@ main(int argc, char *argv[])
(void)setenv("PATH", _PATH_DEFPATH, 0);
#endif
#ifdef KERBEROS
if (krbtkfile_env)
(void)setenv("KRBTKFILE", krbtkfile_env, 1);
#endif
#ifdef KERBEROS5
if (krb5tkfile_env)
(void)setenv("KRB5CCNAME", krb5tkfile_env, 1);
@ -722,7 +676,7 @@ main(int argc, char *argv[])
username, tty);
}
#if defined(KERBEROS) || defined(KERBEROS5)
#if defined(KERBEROS5)
if (KERBEROS_CONFIGURED && !quietlog && notickets == 1)
(void)printf("Warning: no Kerberos tickets issued.\n");
#endif
@ -797,13 +751,13 @@ main(int argc, char *argv[])
err(1, "%s", pwd->pw_shell);
}
#if defined(KERBEROS) || defined(KERBEROS5)
#if defined(KERBEROS5)
#define NBUFSIZ (MAXLOGNAME + 1 + 5) /* .root suffix */
#else
#define NBUFSIZ (MAXLOGNAME + 1)
#endif
#if defined(KERBEROS) || defined(KERBEROS5)
#if defined(KERBEROS5)
/*
* This routine handles cleanup stuff, and the like.
* It exists only in the child process.
@ -829,13 +783,8 @@ dofork(void)
/* Cleanup stuff */
/* Run kdestroy to destroy tickets */
#ifdef KERBEROS
kdestroy();
#endif
#ifdef KERBEROS5
if (login_krb5_get_tickets)
k5destroy();
#endif
/* Leave */
exit(0);

View File

@ -1,4 +1,4 @@
/* $NetBSD: extern.h,v 1.12 2005/02/26 07:19:25 thorpej Exp $ */
/* $NetBSD: extern.h,v 1.13 2006/03/23 23:37:07 wiz Exp $ */
/*
* Copyright (c) 1994
@ -68,13 +68,6 @@ int krb5_arg_end __P((void));
void krb5_end __P((void));
int krb5_chpw __P((const char *));
#endif
#ifdef KERBEROS
int krb4_init __P((const char *));
int krb4_arg __P((char, const char *));
int krb4_arg_end __P((void));
void krb4_end __P((void));
int krb4_chpw __P((const char *));
#endif
#ifdef YP
int yp_init __P((const char *));
int yp_arg __P((char, const char *));

View File

@ -1,4 +1,4 @@
/* $NetBSD: passwd.c,v 1.25 2005/02/26 07:19:25 thorpej Exp $ */
/* $NetBSD: passwd.c,v 1.26 2006/03/23 23:37:07 wiz Exp $ */
/*
* Copyright (c) 1988, 1993, 1994
@ -39,7 +39,7 @@ __COPYRIGHT("@(#) Copyright (c) 1988, 1993, 1994\n\
#if 0
static char sccsid[] = "from: @(#)passwd.c 8.3 (Berkeley) 4/2/94";
#else
__RCSID("$NetBSD: passwd.c,v 1.25 2005/02/26 07:19:25 thorpej Exp $");
__RCSID("$NetBSD: passwd.c,v 1.26 2006/03/23 23:37:07 wiz Exp $");
#endif
#endif /* not lint */
@ -217,12 +217,6 @@ static struct pw_module_s {
{ "kpasswd", "5ku:", "[-5] [-k] [-u principal]",
krb5_init, krb5_arg, krb5_arg_end, krb5_end, krb5_chpw, 0, 0 },
#endif
#ifdef KERBEROS
{ NULL, "4ku:i:r:", "[-4] [-k] [-u user] [-i instance] [-r realm]",
krb4_init, krb4_arg, krb4_arg_end, krb4_end, krb4_chpw, 0, 0 },
{ "kpasswd", "4ku:i:r:", "[-4] [-k] [-u user] [-i instance] [-r realm]",
krb4_init, krb4_arg, krb4_arg_end, krb4_end, krb4_chpw, 0, 0 },
#endif
#ifdef YP
{ NULL, "y", "[-y]",
yp_init, yp_arg, yp_arg_end, yp_end, yp_chpw, 0, 0 },