245 lines
6.5 KiB
C
245 lines
6.5 KiB
C
/*
|
|
* Copyright (c) 1997-2001 Kungliga Tekniska Högskolan
|
|
* (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 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.
|
|
*/
|
|
|
|
#include "krb5_locl.h"
|
|
|
|
RCSID("$Id: verify_user.c,v 1.14 2001/05/14 09:06:53 joda Exp $");
|
|
|
|
static krb5_error_code
|
|
verify_common (krb5_context context,
|
|
krb5_principal principal,
|
|
krb5_ccache ccache,
|
|
krb5_keytab keytab,
|
|
krb5_boolean secure,
|
|
const char *service,
|
|
krb5_creds cred)
|
|
{
|
|
krb5_error_code ret;
|
|
krb5_principal server;
|
|
krb5_verify_init_creds_opt vopt;
|
|
krb5_ccache id;
|
|
|
|
ret = krb5_sname_to_principal (context, NULL, service, KRB5_NT_SRV_HST,
|
|
&server);
|
|
if(ret)
|
|
return ret;
|
|
|
|
krb5_verify_init_creds_opt_init(&vopt);
|
|
krb5_verify_init_creds_opt_set_ap_req_nofail(&vopt, secure);
|
|
|
|
ret = krb5_verify_init_creds(context,
|
|
&cred,
|
|
server,
|
|
keytab,
|
|
NULL,
|
|
&vopt);
|
|
krb5_free_principal(context, server);
|
|
if(ret)
|
|
return ret;
|
|
if(ccache == NULL)
|
|
ret = krb5_cc_default (context, &id);
|
|
else
|
|
id = ccache;
|
|
if(ret == 0){
|
|
ret = krb5_cc_initialize(context, id, principal);
|
|
if(ret == 0){
|
|
ret = krb5_cc_store_cred(context, id, &cred);
|
|
}
|
|
if(ccache == NULL)
|
|
krb5_cc_close(context, id);
|
|
}
|
|
krb5_free_creds_contents(context, &cred);
|
|
return ret;
|
|
}
|
|
|
|
/*
|
|
* Verify user `principal' with `password'.
|
|
*
|
|
* If `secure', also verify against local service key for `service'.
|
|
*
|
|
* As a side effect, fresh tickets are obtained and stored in `ccache'.
|
|
*/
|
|
|
|
void
|
|
krb5_verify_opt_init(krb5_verify_opt *opt)
|
|
{
|
|
memset(opt, 0, sizeof(*opt));
|
|
opt->secure = TRUE;
|
|
opt->service = "host";
|
|
}
|
|
|
|
void
|
|
krb5_verify_opt_set_ccache(krb5_verify_opt *opt, krb5_ccache ccache)
|
|
{
|
|
opt->ccache = ccache;
|
|
}
|
|
|
|
void
|
|
krb5_verify_opt_set_keytab(krb5_verify_opt *opt, krb5_keytab keytab)
|
|
{
|
|
opt->keytab = keytab;
|
|
}
|
|
|
|
void
|
|
krb5_verify_opt_set_secure(krb5_verify_opt *opt, krb5_boolean secure)
|
|
{
|
|
opt->secure = secure;
|
|
}
|
|
|
|
void
|
|
krb5_verify_opt_set_service(krb5_verify_opt *opt, const char *service)
|
|
{
|
|
opt->service = service;
|
|
}
|
|
|
|
void
|
|
krb5_verify_opt_set_flags(krb5_verify_opt *opt, unsigned int flags)
|
|
{
|
|
opt->flags |= flags;
|
|
}
|
|
|
|
static krb5_error_code
|
|
verify_user_opt_int(krb5_context context,
|
|
krb5_principal principal,
|
|
const char *password,
|
|
krb5_verify_opt *vopt)
|
|
|
|
{
|
|
krb5_error_code ret;
|
|
krb5_get_init_creds_opt opt;
|
|
krb5_creds cred;
|
|
|
|
krb5_get_init_creds_opt_init (&opt);
|
|
krb5_get_init_creds_opt_set_default_flags(context, NULL,
|
|
*krb5_princ_realm(context, principal),
|
|
&opt);
|
|
ret = krb5_get_init_creds_password (context,
|
|
&cred,
|
|
principal,
|
|
(char*)password,
|
|
krb5_prompter_posix,
|
|
NULL,
|
|
0,
|
|
NULL,
|
|
&opt);
|
|
if(ret)
|
|
return ret;
|
|
#define OPT(V, D) ((vopt && (vopt->V)) ? (vopt->V) : (D))
|
|
return verify_common (context, principal, OPT(ccache, NULL),
|
|
OPT(keytab, NULL), vopt ? vopt->secure : TRUE,
|
|
OPT(service, "host"), cred);
|
|
#undef OPT
|
|
}
|
|
|
|
krb5_error_code
|
|
krb5_verify_user_opt(krb5_context context,
|
|
krb5_principal principal,
|
|
const char *password,
|
|
krb5_verify_opt *opt)
|
|
{
|
|
krb5_error_code ret;
|
|
|
|
if(opt && (opt->flags & KRB5_VERIFY_LREALMS)) {
|
|
krb5_realm *realms, *r;
|
|
ret = krb5_get_default_realms (context, &realms);
|
|
if (ret)
|
|
return ret;
|
|
ret = KRB5_CONFIG_NODEFREALM;
|
|
|
|
for (r = realms; *r != NULL && ret != 0; ++r) {
|
|
char *tmp = strdup (*r);
|
|
|
|
if (tmp == NULL) {
|
|
krb5_free_host_realm (context, realms);
|
|
krb5_set_error_string (context, "malloc: out of memory");
|
|
return ENOMEM;
|
|
}
|
|
free (*krb5_princ_realm (context, principal));
|
|
krb5_princ_set_realm (context, principal, &tmp);
|
|
|
|
ret = verify_user_opt_int(context, principal, password, opt);
|
|
}
|
|
krb5_free_host_realm (context, realms);
|
|
if(ret)
|
|
return ret;
|
|
} else
|
|
ret = verify_user_opt_int(context, principal, password, opt);
|
|
return ret;
|
|
}
|
|
|
|
/* compat function that calls above */
|
|
|
|
krb5_error_code
|
|
krb5_verify_user(krb5_context context,
|
|
krb5_principal principal,
|
|
krb5_ccache ccache,
|
|
const char *password,
|
|
krb5_boolean secure,
|
|
const char *service)
|
|
{
|
|
krb5_verify_opt opt;
|
|
|
|
krb5_verify_opt_init(&opt);
|
|
|
|
krb5_verify_opt_set_ccache(&opt, ccache);
|
|
krb5_verify_opt_set_secure(&opt, secure);
|
|
krb5_verify_opt_set_service(&opt, service);
|
|
|
|
return krb5_verify_user_opt(context, principal, password, &opt);
|
|
}
|
|
|
|
/*
|
|
* A variant of `krb5_verify_user'. The realm of `principal' is
|
|
* ignored and all the local realms are tried.
|
|
*/
|
|
|
|
krb5_error_code
|
|
krb5_verify_user_lrealm(krb5_context context,
|
|
krb5_principal principal,
|
|
krb5_ccache ccache,
|
|
const char *password,
|
|
krb5_boolean secure,
|
|
const char *service)
|
|
{
|
|
krb5_verify_opt opt;
|
|
|
|
krb5_verify_opt_init(&opt);
|
|
|
|
krb5_verify_opt_set_ccache(&opt, ccache);
|
|
krb5_verify_opt_set_secure(&opt, secure);
|
|
krb5_verify_opt_set_service(&opt, service);
|
|
krb5_verify_opt_set_flags(&opt, KRB5_VERIFY_LREALMS);
|
|
|
|
return krb5_verify_user_opt(context, principal, password, &opt);
|
|
}
|