merge with krb4 version
git-svn-id: svn://svn.h5l.se/heimdal/trunk/heimdal@5681 ec53bebd-3082-4978-b11e-865c3cabbd6b
This commit is contained in:
Johan Danielsson
@@ -1,452 +0,0 @@
|
||||
/*
|
||||
* Copyright (c) 1995, 1996, 1997, 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. 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
|
||||
* may be used to endorse or promote products derived from this software
|
||||
* without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE 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 INSTITUTE 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.
|
||||
*/
|
||||
|
||||
#ifdef HAVE_CONFIG_H
|
||||
#include <config.h>
|
||||
RCSID("$Id$");
|
||||
#endif
|
||||
#include <stdio.h>
|
||||
#include <string.h>
|
||||
#include <siad.h>
|
||||
#include <pwd.h>
|
||||
|
||||
#include <krb5.h>
|
||||
|
||||
#include <com_err.h>
|
||||
|
||||
#ifdef SIAD_GET_GROUPS /* >= 4.0 */
|
||||
#define POSIX_GETPWNAM_R
|
||||
#endif
|
||||
#ifndef POSIX_GETPWNAM_R
|
||||
|
||||
int krb5_verify_user(krb5_context context, krb5_principal principal,
|
||||
krb5_ccache ccache, const char *password, int secure,
|
||||
const char*service);
|
||||
|
||||
|
||||
/* 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 */
|
||||
|
||||
|
||||
|
||||
struct state{
|
||||
krb5_context context;
|
||||
krb5_auth_context auth_context;
|
||||
char ticket[MaxPathLen];
|
||||
int valid;
|
||||
};
|
||||
|
||||
int
|
||||
siad_init(void)
|
||||
{
|
||||
return SIADSUCCESS;
|
||||
}
|
||||
|
||||
int
|
||||
siad_chk_invoker(void)
|
||||
{
|
||||
return SIADFAIL;
|
||||
}
|
||||
|
||||
int
|
||||
siad_ses_init(SIAENTITY *entity, int pkgind)
|
||||
{
|
||||
struct state *s = malloc(sizeof(*s));
|
||||
if(s == NULL)
|
||||
return SIADFAIL;
|
||||
memset(s, 0, sizeof(*s));
|
||||
krb5_init_context(&s->context);
|
||||
entity->mech[pkgind] = (int*)s;
|
||||
return SIADSUCCESS;
|
||||
}
|
||||
|
||||
static int
|
||||
setup_name(SIAENTITY *e, prompt_t *p)
|
||||
{
|
||||
e->name = malloc(SIANAMEMIN+1);
|
||||
if(e->name == NULL)
|
||||
return SIADFAIL;
|
||||
p->prompt = (unsigned char*)"login: ";
|
||||
p->result = (unsigned char*)e->name;
|
||||
p->min_result_length = 1;
|
||||
p->max_result_length = SIANAMEMIN;
|
||||
p->control_flags = 0;
|
||||
return SIADSUCCESS;
|
||||
}
|
||||
|
||||
static int
|
||||
setup_password(SIAENTITY *e, prompt_t *p)
|
||||
{
|
||||
e->password = malloc(SIAMXPASSWORD+1);
|
||||
if(e->password == NULL)
|
||||
return SIADFAIL;
|
||||
p->prompt = (unsigned char*)"Password: ";
|
||||
p->result = (unsigned char*)e->password;
|
||||
p->min_result_length = 0;
|
||||
p->max_result_length = SIAMXPASSWORD;
|
||||
p->control_flags = SIARESINVIS;
|
||||
return SIADSUCCESS;
|
||||
}
|
||||
|
||||
|
||||
static int
|
||||
common_auth(sia_collect_func_t *collect,
|
||||
SIAENTITY *entity,
|
||||
int siastat,
|
||||
int pkgind)
|
||||
{
|
||||
prompt_t prompts[2], *pr;
|
||||
|
||||
if((siastat == SIADSUCCESS) && (geteuid() == 0))
|
||||
return SIADSUCCESS;
|
||||
if(entity == NULL)
|
||||
return SIADFAIL | SIADSTOP;
|
||||
if((entity->acctname != NULL) || (entity->pwd != NULL))
|
||||
return SIADFAIL | SIADSTOP;
|
||||
|
||||
if((collect != NULL) && entity->colinput) {
|
||||
int num;
|
||||
pr = prompts;
|
||||
if(entity->name == NULL){
|
||||
if(setup_name(entity, pr) != SIADSUCCESS)
|
||||
return SIADFAIL;
|
||||
pr++;
|
||||
}
|
||||
if(entity->password == NULL){
|
||||
if(setup_password(entity, pr) != SIADSUCCESS)
|
||||
return SIADFAIL;
|
||||
pr++;
|
||||
}
|
||||
num = pr - prompts;
|
||||
if(num == 1){
|
||||
if((*collect)(240, SIAONELINER, (unsigned char*)"", num,
|
||||
prompts) != SIACOLSUCCESS)
|
||||
return SIADFAIL | SIADSTOP;
|
||||
} else if(num > 0){
|
||||
if((*collect)(0, SIAFORM, (unsigned char*)"", num,
|
||||
prompts) != SIACOLSUCCESS)
|
||||
return SIADFAIL | SIADSTOP;
|
||||
}
|
||||
}
|
||||
|
||||
if(entity->password == NULL || strlen(entity->password) > SIAMXPASSWORD)
|
||||
return SIADFAIL;
|
||||
if(entity->name[0] == 0)
|
||||
return SIADFAIL;
|
||||
|
||||
{
|
||||
char *realm;
|
||||
krb5_principal principal;
|
||||
krb5_ccache ccache;
|
||||
krb5_error_code ret;
|
||||
struct passwd pw, *pwd;
|
||||
char pwbuf[1024];
|
||||
struct state *s = (struct state*)entity->mech[pkgind];
|
||||
|
||||
if(getpwnam_r(entity->name, &pw, pwbuf, sizeof(pwbuf), &pwd) != 0)
|
||||
return SIADFAIL;
|
||||
|
||||
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;
|
||||
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;
|
||||
}
|
||||
if(sia_make_entity_pwd(pwd, entity) == SIAFAIL)
|
||||
return SIADFAIL;
|
||||
s->valid = 1;
|
||||
}
|
||||
return SIADSUCCESS;
|
||||
}
|
||||
|
||||
|
||||
int
|
||||
siad_ses_authent(sia_collect_func_t *collect,
|
||||
SIAENTITY *entity,
|
||||
int siastat,
|
||||
int pkgind)
|
||||
{
|
||||
return common_auth(collect, entity, siastat, pkgind);
|
||||
}
|
||||
|
||||
int
|
||||
siad_ses_estab(sia_collect_func_t *collect,
|
||||
SIAENTITY *entity, int pkgind)
|
||||
{
|
||||
return SIADFAIL;
|
||||
}
|
||||
|
||||
int
|
||||
siad_ses_launch(sia_collect_func_t *collect,
|
||||
SIAENTITY *entity,
|
||||
int pkgind)
|
||||
{
|
||||
char env[1024];
|
||||
struct state *s = (struct state*)entity->mech[pkgind];
|
||||
if(s->valid){
|
||||
chown(s->ticket + sizeof("FILE:") - 1,
|
||||
entity->pwd->pw_uid,
|
||||
entity->pwd->pw_gid);
|
||||
strcpy(env, "KRB5CCNAME=");
|
||||
strncat(env, s->ticket, sizeof(env) - strlen(env));
|
||||
env[sizeof(env) - 1] = 0;
|
||||
putenv(env);
|
||||
}
|
||||
return SIADSUCCESS;
|
||||
}
|
||||
|
||||
int
|
||||
siad_ses_release(SIAENTITY *entity, int pkgind)
|
||||
{
|
||||
if(entity->mech[pkgind]){
|
||||
struct state *s = (struct state*)entity->mech[pkgind];
|
||||
krb5_free_context(s->context);
|
||||
free(entity->mech[pkgind]);
|
||||
}
|
||||
return SIADSUCCESS;
|
||||
}
|
||||
|
||||
int
|
||||
siad_ses_suauthent(sia_collect_func_t *collect,
|
||||
SIAENTITY *entity,
|
||||
int siastat,
|
||||
int pkgind)
|
||||
{
|
||||
if(geteuid() != 0)
|
||||
return SIADFAIL;
|
||||
if(entity->name == NULL)
|
||||
return SIADFAIL;
|
||||
if(entity->name[0] == 0)
|
||||
strcpy(entity->name, "root");
|
||||
#if 0
|
||||
return common_auth(collect, entity, siastat, pkgind);
|
||||
#endif
|
||||
return SIADFAIL;
|
||||
}
|
||||
|
||||
/* The following functions returns the default fail */
|
||||
|
||||
int
|
||||
siad_ses_reauthent (sia_collect_func_t *collect,
|
||||
SIAENTITY *entity,
|
||||
int siastat,
|
||||
int pkgind)
|
||||
{
|
||||
return SIADFAIL;
|
||||
}
|
||||
|
||||
int
|
||||
siad_chg_finger (sia_collect_func_t *collect,
|
||||
const char *username,
|
||||
int argc,
|
||||
char *argv[])
|
||||
{
|
||||
return SIADFAIL;
|
||||
}
|
||||
|
||||
int
|
||||
siad_chg_password (sia_collect_func_t *collect,
|
||||
const char *username,
|
||||
int argc,
|
||||
char *argv[])
|
||||
{
|
||||
return SIADFAIL;
|
||||
}
|
||||
|
||||
int
|
||||
siad_chg_shell (sia_collect_func_t *collect,
|
||||
const char *username,
|
||||
int argc,
|
||||
char *argv[])
|
||||
{
|
||||
return SIADFAIL;
|
||||
}
|
||||
|
||||
int
|
||||
siad_getpwent(struct passwd *result,
|
||||
char *buf,
|
||||
int bufsize,
|
||||
struct sia_context *context)
|
||||
{
|
||||
return SIADFAIL;
|
||||
}
|
||||
|
||||
int
|
||||
siad_getpwuid (uid_t uid,
|
||||
struct passwd *result,
|
||||
char *buf,
|
||||
int bufsize,
|
||||
struct sia_context *context)
|
||||
{
|
||||
return SIADFAIL;
|
||||
}
|
||||
|
||||
int
|
||||
siad_getpwnam (const char *name,
|
||||
struct passwd *result,
|
||||
char *buf,
|
||||
int bufsize,
|
||||
struct sia_context *context)
|
||||
{
|
||||
return SIADFAIL;
|
||||
}
|
||||
|
||||
int
|
||||
siad_setpwent (struct sia_context *context)
|
||||
{
|
||||
return SIADFAIL;
|
||||
}
|
||||
|
||||
int
|
||||
siad_endpwent (struct sia_context *context)
|
||||
{
|
||||
return SIADFAIL;
|
||||
}
|
||||
|
||||
int
|
||||
siad_getgrent(struct group *result,
|
||||
char *buf,
|
||||
int bufsize,
|
||||
struct sia_context *context)
|
||||
{
|
||||
return SIADFAIL;
|
||||
}
|
||||
|
||||
int
|
||||
siad_getgrgid (gid_t gid,
|
||||
struct group *result,
|
||||
char *buf,
|
||||
int bufsize,
|
||||
struct sia_context *context)
|
||||
{
|
||||
return SIADFAIL;
|
||||
}
|
||||
|
||||
int
|
||||
siad_getgrnam (const char *name,
|
||||
struct group *result,
|
||||
char *buf,
|
||||
int bufsize,
|
||||
struct sia_context *context)
|
||||
{
|
||||
return SIADFAIL;
|
||||
}
|
||||
|
||||
int
|
||||
siad_setgrent (struct sia_context *context)
|
||||
{
|
||||
return SIADFAIL;
|
||||
}
|
||||
|
||||
int
|
||||
siad_endgrent (struct sia_context *context)
|
||||
{
|
||||
return SIADFAIL;
|
||||
}
|
||||
|
||||
int
|
||||
siad_chk_user (const char *logname, int checkflag)
|
||||
{
|
||||
return SIADFAIL;
|
||||
}
|
||||
Reference in New Issue
Block a user