mirror of
https://github.com/freebsd/freebsd-src
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245 lines
6.5 KiB
C
245 lines
6.5 KiB
C
/*
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* Copyright (c) 1997-2001 Kungliga Tekniska Högskolan
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* (Royal Institute of Technology, Stockholm, Sweden).
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* 3. Neither the name of the Institute nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include "krb5_locl.h"
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RCSID("$Id: verify_user.c,v 1.14 2001/05/14 09:06:53 joda Exp $");
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static krb5_error_code
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verify_common (krb5_context context,
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krb5_principal principal,
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krb5_ccache ccache,
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krb5_keytab keytab,
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krb5_boolean secure,
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const char *service,
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krb5_creds cred)
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{
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krb5_error_code ret;
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krb5_principal server;
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krb5_verify_init_creds_opt vopt;
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krb5_ccache id;
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ret = krb5_sname_to_principal (context, NULL, service, KRB5_NT_SRV_HST,
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&server);
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if(ret)
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return ret;
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krb5_verify_init_creds_opt_init(&vopt);
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krb5_verify_init_creds_opt_set_ap_req_nofail(&vopt, secure);
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ret = krb5_verify_init_creds(context,
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&cred,
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server,
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keytab,
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NULL,
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&vopt);
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krb5_free_principal(context, server);
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if(ret)
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return ret;
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if(ccache == NULL)
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ret = krb5_cc_default (context, &id);
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else
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id = ccache;
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if(ret == 0){
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ret = krb5_cc_initialize(context, id, principal);
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if(ret == 0){
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ret = krb5_cc_store_cred(context, id, &cred);
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}
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if(ccache == NULL)
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krb5_cc_close(context, id);
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}
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krb5_free_creds_contents(context, &cred);
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return ret;
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}
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/*
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* Verify user `principal' with `password'.
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*
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* If `secure', also verify against local service key for `service'.
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*
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* As a side effect, fresh tickets are obtained and stored in `ccache'.
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*/
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void
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krb5_verify_opt_init(krb5_verify_opt *opt)
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{
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memset(opt, 0, sizeof(*opt));
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opt->secure = TRUE;
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opt->service = "host";
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}
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void
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krb5_verify_opt_set_ccache(krb5_verify_opt *opt, krb5_ccache ccache)
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{
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opt->ccache = ccache;
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}
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void
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krb5_verify_opt_set_keytab(krb5_verify_opt *opt, krb5_keytab keytab)
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{
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opt->keytab = keytab;
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}
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void
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krb5_verify_opt_set_secure(krb5_verify_opt *opt, krb5_boolean secure)
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{
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opt->secure = secure;
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}
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void
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krb5_verify_opt_set_service(krb5_verify_opt *opt, const char *service)
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{
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opt->service = service;
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}
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void
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krb5_verify_opt_set_flags(krb5_verify_opt *opt, unsigned int flags)
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{
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opt->flags |= flags;
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}
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static krb5_error_code
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verify_user_opt_int(krb5_context context,
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krb5_principal principal,
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const char *password,
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krb5_verify_opt *vopt)
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{
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krb5_error_code ret;
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krb5_get_init_creds_opt opt;
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krb5_creds cred;
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krb5_get_init_creds_opt_init (&opt);
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krb5_get_init_creds_opt_set_default_flags(context, NULL,
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*krb5_princ_realm(context, principal),
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&opt);
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ret = krb5_get_init_creds_password (context,
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&cred,
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principal,
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(char*)password,
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krb5_prompter_posix,
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NULL,
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0,
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NULL,
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&opt);
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if(ret)
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return ret;
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#define OPT(V, D) ((vopt && (vopt->V)) ? (vopt->V) : (D))
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return verify_common (context, principal, OPT(ccache, NULL),
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OPT(keytab, NULL), vopt ? vopt->secure : TRUE,
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OPT(service, "host"), cred);
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#undef OPT
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}
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krb5_error_code
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krb5_verify_user_opt(krb5_context context,
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krb5_principal principal,
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const char *password,
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krb5_verify_opt *opt)
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{
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krb5_error_code ret;
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if(opt && (opt->flags & KRB5_VERIFY_LREALMS)) {
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krb5_realm *realms, *r;
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ret = krb5_get_default_realms (context, &realms);
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if (ret)
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return ret;
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ret = KRB5_CONFIG_NODEFREALM;
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for (r = realms; *r != NULL && ret != 0; ++r) {
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char *tmp = strdup (*r);
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if (tmp == NULL) {
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krb5_free_host_realm (context, realms);
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krb5_set_error_string (context, "malloc: out of memory");
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return ENOMEM;
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}
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free (*krb5_princ_realm (context, principal));
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krb5_princ_set_realm (context, principal, &tmp);
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ret = verify_user_opt_int(context, principal, password, opt);
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}
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krb5_free_host_realm (context, realms);
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if(ret)
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return ret;
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} else
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ret = verify_user_opt_int(context, principal, password, opt);
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return ret;
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}
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/* compat function that calls above */
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krb5_error_code
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krb5_verify_user(krb5_context context,
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krb5_principal principal,
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krb5_ccache ccache,
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const char *password,
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krb5_boolean secure,
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const char *service)
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{
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krb5_verify_opt opt;
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krb5_verify_opt_init(&opt);
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krb5_verify_opt_set_ccache(&opt, ccache);
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krb5_verify_opt_set_secure(&opt, secure);
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krb5_verify_opt_set_service(&opt, service);
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return krb5_verify_user_opt(context, principal, password, &opt);
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}
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/*
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* A variant of `krb5_verify_user'. The realm of `principal' is
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* ignored and all the local realms are tried.
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*/
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krb5_error_code
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krb5_verify_user_lrealm(krb5_context context,
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krb5_principal principal,
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krb5_ccache ccache,
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const char *password,
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krb5_boolean secure,
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const char *service)
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{
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krb5_verify_opt opt;
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krb5_verify_opt_init(&opt);
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krb5_verify_opt_set_ccache(&opt, ccache);
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krb5_verify_opt_set_secure(&opt, secure);
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krb5_verify_opt_set_service(&opt, service);
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krb5_verify_opt_set_flags(&opt, KRB5_VERIFY_LREALMS);
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return krb5_verify_user_opt(context, principal, password, &opt);
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}
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