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merge with krb5 version

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git-svn-id: svn://svn.h5l.se/heimdal/trunk/heimdal@5679 ec53bebd-3082-4978-b11e-865c3cabbd6b
This commit is contained in:
Johan Danielsson
1999-03-21 17:06:53 +00:00
parent 5cf178c5c1
commit 06681902f4
2 changed files with 264 additions and 160 deletions
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327
lib/auth/sia/sia.c
View File

@@ -1,5 +1,5 @@
/*
* Copyright (c) 1995, 1996, 1997, 1998, 1999 Kungliga Tekniska H<>gskolan
* Copyright (c) 1995-1999 Kungliga Tekniska H<>gskolan
* (Royal Institute of Technology, Stockholm, Sweden).
* All rights reserved.
*
@@ -14,12 +14,7 @@
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the Kungliga Tekniska
* H<>gskolan and its contributors.
*
* 4. Neither the name of the Institute nor the names of its contributors
* 3. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
@@ -36,84 +31,9 @@
* SUCH DAMAGE.
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#include "sia_locl.h"
RCSID("$Id$");
#endif
#include <ctype.h>
#include <stdio.h>
#include <string.h>
#include <siad.h>
#include <pwd.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <krb.h>
#include <kafs.h>
#include <kadm.h>
#include <kadm_err.h>
#include <roken.h>
#ifndef POSIX_GETPWNAM_R
/* These functions translate from the old Digital UNIX 3.x interface
* to POSIX.1c.
*/
static int
posix_getpwnam_r(const char *name, struct passwd *pwd,
char *buffer, int len, struct passwd **result)
{
int ret = getpwnam_r(name, pwd, buffer, len);
if(ret == 0)
*result = pwd;
else{
*result = NULL;
ret = _Geterrno();
if(ret == 0){
ret = ERANGE;
_Seterrno(ret);
}
}
return ret;
}
#define getpwnam_r posix_getpwnam_r
static int
posix_getpwuid_r(uid_t uid, struct passwd *pwd,
char *buffer, int len, struct passwd **result)
{
int ret = getpwuid_r(uid, pwd, buffer, len);
if(ret == 0)
*result = pwd;
else{
*result = NULL;
ret = _Geterrno();
if(ret == 0){
ret = ERANGE;
_Seterrno(ret);
}
}
return ret;
}
#define getpwuid_r posix_getpwuid_r
#endif /* POSIX_GETPWNAM_R */
#ifndef DEBUG
#define SIA_DEBUG(X)
#else
#define SIA_DEBUG(X) SIALOG X
#endif
struct state{
char ticket[MaxPathLen];
int valid;
};
int
siad_init(void)
@@ -136,6 +56,9 @@ siad_ses_init(SIAENTITY *entity, int pkgind)
if(s == NULL)
return SIADFAIL;
memset(s, 0, sizeof(*s));
#ifdef SIA_KRB5
krb5_init_context(&s->context);
#endif
entity->mech[pkgind] = (int*)s;
return SIADSUCCESS;
}
@@ -144,7 +67,7 @@ static int
setup_name(SIAENTITY *e, prompt_t *p)
{
SIA_DEBUG(("DEBUG", "setup_name"));
e->name = malloc(SIANAMEMIN+1);
e->name = malloc(SIANAMEMIN + 1);
if(e->name == NULL){
SIA_DEBUG(("DEBUG", "failed to malloc %u bytes", SIANAMEMIN+1));
return SIADFAIL;
@@ -161,7 +84,7 @@ static int
setup_password(SIAENTITY *e, prompt_t *p)
{
SIA_DEBUG(("DEBUG", "setup_password"));
e->password = malloc(SIAMXPASSWORD+1);
e->password = malloc(SIAMXPASSWORD + 1);
if(e->password == NULL){
SIA_DEBUG(("DEBUG", "failed to malloc %u bytes", SIAMXPASSWORD+1));
return SIADFAIL;
@@ -175,6 +98,133 @@ setup_password(SIAENTITY *e, prompt_t *p)
}
#if defined(SIA_KRB4) && !defined(KRB_VERIFY_SECURE)
#define KRB_VERIFY_SECURE 1
#define KRB_VERIFY_NOT_SECURE 0
#endif
static int
doauth(SIAENTITY *entity, int pkgind, char *name)
{
struct passwd pw, *pwd;
char pwbuf[1024];
struct state *s = (struct state*)entity->mech[pkgind];
#ifdef SIA_KRB5
char *realm;
krb5_principal principal;
krb5_ccache ccache;
krb5_error_code ret;
#endif
#ifdef SIA_KRB4
char realm[REALM_SZ];
char *toname, *toinst;
int ret;
struct passwd fpw, *fpwd;
char fpwbuf[1024];
int secure;
#endif
if(getpwnam_r(name, &pw, pwbuf, sizeof(pwbuf), &pwd) != 0){
SIA_DEBUG(("DEBUG", "failed to getpwnam(%s)", name));
return SIADFAIL;
}
#ifdef SIA_KRB5
ret = krb5_get_default_realm(s->context, &realm);
krb5_build_principal(s->context, &principal,
strlen(realm),
realm,
entity->name,
NULL);
if(!krb5_kuserok(s->context, principal, entity->name))
return SIADFAIL;
sprintf(s->ticket, "FILE:/tmp/krb5_cc%d_%d", pwd->pw_uid, getpid());
ret = krb5_cc_resolve(s->context, s->ticket, &ccache);
if(ret)
return SIADFAIL;
ret = krb5_cc_initialize(s->context, ccache, principal);
if(ret)
return SIADFAIL;
#endif
#ifdef SIA_KRB4
snprintf(s->ticket, sizeof(s->ticket),
TKT_ROOT "%u_%u", (unsigned)pwd->pw_uid, (unsigned)getpid());
krb_get_lrealm(realm, 1);
toname = name;
toinst = "";
if(entity->authtype == SIA_A_SUAUTH){
uid_t ouid;
#ifdef HAVE_SIAENTITY_OUID
ouid = entity->ouid;
#else
ouid = getuid();
#endif
if(getpwuid_r(ouid, &fpw, fpwbuf, sizeof(fpwbuf), &fpwd) != 0){
SIA_DEBUG(("DEBUG", "failed to getpwuid(%u)", ouid));
return SIADFAIL;
}
snprintf(s->ticket, sizeof(s->ticket), TKT_ROOT "_%s_to_%s_%d",
fpwd->pw_name, pwd->pw_name, getpid());
if(strcmp(pwd->pw_name, "root") == 0){
toname = fpwd->pw_name;
toinst = pwd->pw_name;
}
}
if(entity->authtype == SIA_A_REAUTH)
snprintf(s->ticket, sizeof(s->ticket), "%s", tkt_string());
krb_set_tkt_string(s->ticket);
setuid(0); /* XXX fix for fix in tf_util.c */
if(krb_kuserok(toname, toinst, realm, name)){
SIA_DEBUG(("DEBUG", "%s.%s@%s is not allowed to login as %s",
toname, toinst, realm, name));
return SIADFAIL;
}
#endif
#ifdef SIA_KRB5
ret = krb5_verify_user(s->context, principal, ccache,
entity->password, 1, NULL);
if(ret){
/* if this is most likely a local user (such as
root), just silently return failure when the
principal doesn't exist */
if(ret != KRB5KDC_ERR_C_PRINCIPAL_UNKNOWN &&
ret != KRB5KDC_ERR_S_PRINCIPAL_UNKNOWN)
SIALOG("WARNING", "krb5_verify_user(%s): %s",
entity->name, error_message(ret));
return SIADFAIL;
}
#endif
#ifdef SIA_KRB4
if (getuid () == 0)
secure = KRB_VERIFY_SECURE;
else
secure = KRB_VERIFY_NOT_SECURE;
ret = krb_verify_user(toname, toinst, realm,
entity->password, secure, NULL);
if(ret){
SIA_DEBUG(("DEBUG", "krb_verify_user: %s", krb_get_err_text(ret)));
if(ret != KDC_PR_UNKNOWN)
/* since this is most likely a local user (such as
root), just silently return failure when the
principal doesn't exist */
SIALOG("WARNING", "krb_verify_user(%s.%s): %s",
toname, toinst, krb_get_err_text(ret));
return SIADFAIL;
}
#endif
if(sia_make_entity_pwd(pwd, entity) == SIAFAIL)
return SIADFAIL;
s->valid = 1;
return SIADSUCCESS;
}
static int
common_auth(sia_collect_func_t *collect,
SIAENTITY *entity,
@@ -182,7 +232,6 @@ common_auth(sia_collect_func_t *collect,
int pkgind)
{
prompt_t prompts[2], *pr;
char *toname, *toinst;
char *name;
SIA_DEBUG(("DEBUG", "common_auth"));
@@ -236,75 +285,7 @@ common_auth(sia_collect_func_t *collect,
return SIADFAIL;
}
{
char realm[REALM_SZ];
int ret;
struct passwd pw, *pwd, fpw, *fpwd;
char pwbuf[1024], fpwbuf[1024];
struct state *s = (struct state*)entity->mech[pkgind];
int secure;
if(getpwnam_r(name, &pw, pwbuf, sizeof(pwbuf), &pwd) != 0){
SIA_DEBUG(("DEBUG", "failed to getpwnam(%s)", name));
return SIADFAIL;
}
snprintf(s->ticket, sizeof(s->ticket),
TKT_ROOT "%u_%u", (unsigned)pwd->pw_uid, (unsigned)getpid());
krb_get_lrealm(realm, 1);
toname = name;
toinst = "";
if(entity->authtype == SIA_A_SUAUTH){
uid_t ouid;
#ifdef HAVE_SIAENTITY_OUID
ouid = entity->ouid;
#else
ouid = getuid();
#endif
if(getpwuid_r(ouid, &fpw, fpwbuf, sizeof(fpwbuf), &fpwd) != 0){
SIA_DEBUG(("DEBUG", "failed to getpwuid(%u)", ouid));
return SIADFAIL;
}
snprintf(s->ticket, sizeof(s->ticket), TKT_ROOT "_%s_to_%s_%d",
fpwd->pw_name, pwd->pw_name, getpid());
if(strcmp(pwd->pw_name, "root") == 0){
toname = fpwd->pw_name;
toinst = pwd->pw_name;
}
}
if(entity->authtype == SIA_A_REAUTH)
snprintf(s->ticket, sizeof(s->ticket), "%s", tkt_string());
krb_set_tkt_string(s->ticket);
setuid(0); /* XXX fix for fix in tf_util.c */
if(krb_kuserok(toname, toinst, realm, name)){
SIA_DEBUG(("DEBUG", "%s.%s@%s is not allowed to login as %s",
toname, toinst, realm, name));
return SIADFAIL;
}
if (getuid () == 0)
secure = KRB_VERIFY_SECURE;
else
secure = KRB_VERIFY_NOT_SECURE;
ret = krb_verify_user(toname, toinst, realm,
entity->password, secure, NULL);
if(ret){
SIA_DEBUG(("DEBUG", "krb_verify_user: %s", krb_get_err_text(ret)));
if(ret != KDC_PR_UNKNOWN)
/* since this is most likely a local user (such as
root), just silently return failure when the
principal doesn't exist */
SIALOG("WARNING", "krb_verify_user(%s.%s): %s",
toname, toinst, krb_get_err_text(ret));
return SIADFAIL;
}
if(sia_make_entity_pwd(pwd, entity) == SIAFAIL)
return SIADFAIL;
s->valid = 1;
}
return SIADSUCCESS;
return doauth(entity, pkgind, name);
}
@@ -335,10 +316,19 @@ siad_ses_launch(sia_collect_func_t *collect,
struct state *s = (struct state*)entity->mech[pkgind];
SIA_DEBUG(("DEBUG", "siad_ses_launch"));
if(s->valid){
#ifdef SIA_KRB5
chown(s->ticket + sizeof("FILE:") - 1,
entity->pwd->pw_uid,
entity->pwd->pw_gid);
snprintf(env, sizeof(env), "KRB5CCNAME=%s", s->ticket);
#endif
#ifdef SIA_KRB4
chown(s->ticket, entity->pwd->pw_uid, entity->pwd->pw_gid);
snprintf(env, sizeof(env), "KRBTKFILE=%s", s->ticket);
#endif
putenv(env);
}
#ifdef KRB4
if (k_hasafs()) {
char cell[64];
k_setpag();
@@ -346,6 +336,7 @@ siad_ses_launch(sia_collect_func_t *collect,
krb_afslog(cell, 0);
krb_afslog_home(0, 0, entity->pwd->pw_dir);
}
#endif
return SIADSUCCESS;
}
@@ -353,8 +344,13 @@ int
siad_ses_release(SIAENTITY *entity, int pkgind)
{
SIA_DEBUG(("DEBUG", "siad_ses_release"));
if(entity->mech[pkgind])
if(entity->mech[pkgind]){
#ifdef SIA_KRB5
struct state *s = (struct state*)entity->mech[pkgind];
krb5_free_context(s->context);
#endif
free(entity->mech[pkgind]);
}
return SIADSUCCESS;
}
@@ -369,7 +365,7 @@ siad_ses_suauthent(sia_collect_func_t *collect,
return SIADFAIL;
if(entity->name == NULL)
return SIADFAIL;
if(entity->name[0] == 0) {
if(entity->name[0] == '\0') {
free(entity->name);
entity->name = strdup("root");
if (entity->name == NULL)
@@ -378,8 +374,6 @@ siad_ses_suauthent(sia_collect_func_t *collect,
return common_auth(collect, entity, siastat, pkgind);
}
/* The following functions returns the default fail */
int
siad_ses_reauthent (sia_collect_func_t *collect,
SIAENTITY *entity,
@@ -417,6 +411,18 @@ siad_chg_finger (sia_collect_func_t *collect,
return SIADFAIL;
}
#ifdef SIA_KRB5
int
siad_chg_password (sia_collect_func_t *collect,
const char *username,
int argc,
char *argv[])
{
return SIADFAIL;
}
#endif
#ifdef SIA_KRB4
static void
sia_message(sia_collect_func_t *collect, int rendition,
const char *title, const char *message)
@@ -568,6 +574,7 @@ again:
return SIADFAIL;
return SIADSUCCESS;
}
#endif
int
siad_chg_shell (sia_collect_func_t *collect,

97
lib/auth/sia/sia_locl.h Normal file
View File

@@ -0,0 +1,97 @@
/*
* Copyright (c) 1999 Kungliga Tekniska H<>gskolan
* (Royal Institute of Technology, Stockholm, Sweden).
* 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 KTH 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 KTH AND ITS 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 KTH OR ITS 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. */
/* $Id$ */
#ifndef __sia_locl_h__
#define __sia_locl_h__
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <ctype.h>
#include <stdio.h>
#include <string.h>
#include <siad.h>
#include <pwd.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#ifdef KRB5
#define SIA_KRB5
#elif defined(KRB4)
#define SIA_KRB4
#endif
#ifdef SIA_KRB5
#include <krb5.h>
#include <com_err.h>
#endif
#ifdef SIA_KRB4
#include <krb.h>
#include <krb_err.h>
#include <kadm.h>
#include <kadm_err.h>
#endif
#ifdef KRB4
#include <kafs.h>
#endif
#include <roken.h>
#ifdef SIAD_GET_GROUPS /* >= 4.0 */
#define POSIX_GETPWNAM_R
#endif
#ifndef POSIX_GETPWNAM_R
#define getpwnam_r posix_getpwnam_r
#define getpwuid_r posix_getpwuid_r
#endif /* POSIX_GETPWNAM_R */
#ifndef DEBUG
#define SIA_DEBUG(X)
#else
#define SIA_DEBUG(X) SIALOG X
#endif
struct state{
#ifdef SIA_KRB5
krb5_context context;
krb5_auth_context auth_context;
#endif
char ticket[MaxPathLen];
int valid;
};
#endif /* __sia_locl_h__ */