diff options
Diffstat (limited to 'crypto/heimdal/lib/gssapi/krb5/acquire_cred.c')
| -rw-r--r-- | crypto/heimdal/lib/gssapi/krb5/acquire_cred.c | 398 |
1 files changed, 0 insertions, 398 deletions
diff --git a/crypto/heimdal/lib/gssapi/krb5/acquire_cred.c b/crypto/heimdal/lib/gssapi/krb5/acquire_cred.c deleted file mode 100644 index 6e13a42..0000000 --- a/crypto/heimdal/lib/gssapi/krb5/acquire_cred.c +++ /dev/null @@ -1,398 +0,0 @@ -/* - * Copyright (c) 1997 - 2005 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/gsskrb5_locl.h" - -RCSID("$Id: acquire_cred.c 22124 2007-12-04 00:03:52Z lha $"); - -OM_uint32 -__gsskrb5_ccache_lifetime(OM_uint32 *minor_status, - krb5_context context, - krb5_ccache id, - krb5_principal principal, - OM_uint32 *lifetime) -{ - krb5_creds in_cred, *out_cred; - krb5_const_realm realm; - krb5_error_code kret; - - memset(&in_cred, 0, sizeof(in_cred)); - in_cred.client = principal; - - realm = krb5_principal_get_realm(context, principal); - if (realm == NULL) { - _gsskrb5_clear_status (); - *minor_status = KRB5_PRINC_NOMATCH; /* XXX */ - return GSS_S_FAILURE; - } - - kret = krb5_make_principal(context, &in_cred.server, - realm, KRB5_TGS_NAME, realm, NULL); - if (kret) { - *minor_status = kret; - return GSS_S_FAILURE; - } - - kret = krb5_get_credentials(context, 0, - id, &in_cred, &out_cred); - krb5_free_principal(context, in_cred.server); - if (kret) { - *minor_status = kret; - return GSS_S_FAILURE; - } - - *lifetime = out_cred->times.endtime; - krb5_free_creds(context, out_cred); - - return GSS_S_COMPLETE; -} - - - - -static krb5_error_code -get_keytab(krb5_context context, krb5_keytab *keytab) -{ - char kt_name[256]; - krb5_error_code kret; - - HEIMDAL_MUTEX_lock(&gssapi_keytab_mutex); - - if (_gsskrb5_keytab != NULL) { - kret = krb5_kt_get_name(context, - _gsskrb5_keytab, - kt_name, sizeof(kt_name)); - if (kret == 0) - kret = krb5_kt_resolve(context, kt_name, keytab); - } else - kret = krb5_kt_default(context, keytab); - - HEIMDAL_MUTEX_unlock(&gssapi_keytab_mutex); - - return (kret); -} - -static OM_uint32 acquire_initiator_cred - (OM_uint32 * minor_status, - krb5_context context, - const gss_name_t desired_name, - OM_uint32 time_req, - const gss_OID_set desired_mechs, - gss_cred_usage_t cred_usage, - gsskrb5_cred handle, - gss_OID_set * actual_mechs, - OM_uint32 * time_rec - ) -{ - OM_uint32 ret; - krb5_creds cred; - krb5_principal def_princ; - krb5_get_init_creds_opt *opt; - krb5_ccache ccache; - krb5_keytab keytab; - krb5_error_code kret; - - keytab = NULL; - ccache = NULL; - def_princ = NULL; - ret = GSS_S_FAILURE; - memset(&cred, 0, sizeof(cred)); - - /* If we have a preferred principal, lets try to find it in all - * caches, otherwise, fall back to default cache. Ignore - * errors. */ - if (handle->principal) - kret = krb5_cc_cache_match (context, - handle->principal, - NULL, - &ccache); - - if (ccache == NULL) { - kret = krb5_cc_default(context, &ccache); - if (kret) - goto end; - } - kret = krb5_cc_get_principal(context, ccache, - &def_princ); - if (kret != 0) { - /* we'll try to use a keytab below */ - krb5_cc_destroy(context, ccache); - ccache = NULL; - kret = 0; - } else if (handle->principal == NULL) { - kret = krb5_copy_principal(context, def_princ, - &handle->principal); - if (kret) - goto end; - } else if (handle->principal != NULL && - krb5_principal_compare(context, handle->principal, - def_princ) == FALSE) { - /* Before failing, lets check the keytab */ - krb5_free_principal(context, def_princ); - def_princ = NULL; - } - if (def_princ == NULL) { - /* We have no existing credentials cache, - * so attempt to get a TGT using a keytab. - */ - if (handle->principal == NULL) { - kret = krb5_get_default_principal(context, - &handle->principal); - if (kret) - goto end; - } - kret = get_keytab(context, &keytab); - if (kret) - goto end; - kret = krb5_get_init_creds_opt_alloc(context, &opt); - if (kret) - goto end; - kret = krb5_get_init_creds_keytab(context, &cred, - handle->principal, keytab, 0, NULL, opt); - krb5_get_init_creds_opt_free(context, opt); - if (kret) - goto end; - kret = krb5_cc_gen_new(context, &krb5_mcc_ops, - &ccache); - if (kret) - goto end; - kret = krb5_cc_initialize(context, ccache, cred.client); - if (kret) - goto end; - kret = krb5_cc_store_cred(context, ccache, &cred); - if (kret) - goto end; - handle->lifetime = cred.times.endtime; - handle->cred_flags |= GSS_CF_DESTROY_CRED_ON_RELEASE; - } else { - - ret = __gsskrb5_ccache_lifetime(minor_status, - context, - ccache, - handle->principal, - &handle->lifetime); - if (ret != GSS_S_COMPLETE) - goto end; - kret = 0; - } - - handle->ccache = ccache; - ret = GSS_S_COMPLETE; - -end: - if (cred.client != NULL) - krb5_free_cred_contents(context, &cred); - if (def_princ != NULL) - krb5_free_principal(context, def_princ); - if (keytab != NULL) - krb5_kt_close(context, keytab); - if (ret != GSS_S_COMPLETE) { - if (ccache != NULL) - krb5_cc_close(context, ccache); - if (kret != 0) { - *minor_status = kret; - } - } - return (ret); -} - -static OM_uint32 acquire_acceptor_cred - (OM_uint32 * minor_status, - krb5_context context, - const gss_name_t desired_name, - OM_uint32 time_req, - const gss_OID_set desired_mechs, - gss_cred_usage_t cred_usage, - gsskrb5_cred handle, - gss_OID_set * actual_mechs, - OM_uint32 * time_rec - ) -{ - OM_uint32 ret; - krb5_error_code kret; - - kret = 0; - ret = GSS_S_FAILURE; - kret = get_keytab(context, &handle->keytab); - if (kret) - goto end; - - /* check that the requested principal exists in the keytab */ - if (handle->principal) { - krb5_keytab_entry entry; - - kret = krb5_kt_get_entry(context, handle->keytab, - handle->principal, 0, 0, &entry); - if (kret) - goto end; - krb5_kt_free_entry(context, &entry); - ret = GSS_S_COMPLETE; - } else { - /* - * Check if there is at least one entry in the keytab before - * declaring it as an useful keytab. - */ - krb5_keytab_entry tmp; - krb5_kt_cursor c; - - kret = krb5_kt_start_seq_get (context, handle->keytab, &c); - if (kret) - goto end; - if (krb5_kt_next_entry(context, handle->keytab, &tmp, &c) == 0) { - krb5_kt_free_entry(context, &tmp); - ret = GSS_S_COMPLETE; /* ok found one entry */ - } - krb5_kt_end_seq_get (context, handle->keytab, &c); - } -end: - if (ret != GSS_S_COMPLETE) { - if (handle->keytab != NULL) - krb5_kt_close(context, handle->keytab); - if (kret != 0) { - *minor_status = kret; - } - } - return (ret); -} - -OM_uint32 _gsskrb5_acquire_cred -(OM_uint32 * minor_status, - const gss_name_t desired_name, - OM_uint32 time_req, - const gss_OID_set desired_mechs, - gss_cred_usage_t cred_usage, - gss_cred_id_t * output_cred_handle, - gss_OID_set * actual_mechs, - OM_uint32 * time_rec - ) -{ - krb5_context context; - gsskrb5_cred handle; - OM_uint32 ret; - - if (cred_usage != GSS_C_ACCEPT && cred_usage != GSS_C_INITIATE && cred_usage != GSS_C_BOTH) { - *minor_status = GSS_KRB5_S_G_BAD_USAGE; - return GSS_S_FAILURE; - } - - GSSAPI_KRB5_INIT(&context); - - *output_cred_handle = NULL; - if (time_rec) - *time_rec = 0; - if (actual_mechs) - *actual_mechs = GSS_C_NO_OID_SET; - - if (desired_mechs) { - int present = 0; - - ret = gss_test_oid_set_member(minor_status, GSS_KRB5_MECHANISM, - desired_mechs, &present); - if (ret) - return ret; - if (!present) { - *minor_status = 0; - return GSS_S_BAD_MECH; - } - } - - handle = calloc(1, sizeof(*handle)); - if (handle == NULL) { - *minor_status = ENOMEM; - return (GSS_S_FAILURE); - } - - HEIMDAL_MUTEX_init(&handle->cred_id_mutex); - - if (desired_name != GSS_C_NO_NAME) { - krb5_principal name = (krb5_principal)desired_name; - ret = krb5_copy_principal(context, name, &handle->principal); - if (ret) { - HEIMDAL_MUTEX_destroy(&handle->cred_id_mutex); - *minor_status = ret; - free(handle); - return GSS_S_FAILURE; - } - } - if (cred_usage == GSS_C_INITIATE || cred_usage == GSS_C_BOTH) { - ret = acquire_initiator_cred(minor_status, context, - desired_name, time_req, - desired_mechs, cred_usage, handle, - actual_mechs, time_rec); - if (ret != GSS_S_COMPLETE) { - HEIMDAL_MUTEX_destroy(&handle->cred_id_mutex); - krb5_free_principal(context, handle->principal); - free(handle); - return (ret); - } - } - if (cred_usage == GSS_C_ACCEPT || cred_usage == GSS_C_BOTH) { - ret = acquire_acceptor_cred(minor_status, context, - desired_name, time_req, - desired_mechs, cred_usage, handle, actual_mechs, time_rec); - if (ret != GSS_S_COMPLETE) { - HEIMDAL_MUTEX_destroy(&handle->cred_id_mutex); - krb5_free_principal(context, handle->principal); - free(handle); - return (ret); - } - } - ret = gss_create_empty_oid_set(minor_status, &handle->mechanisms); - if (ret == GSS_S_COMPLETE) - ret = gss_add_oid_set_member(minor_status, GSS_KRB5_MECHANISM, - &handle->mechanisms); - if (ret == GSS_S_COMPLETE) - ret = _gsskrb5_inquire_cred(minor_status, (gss_cred_id_t)handle, - NULL, time_rec, NULL, actual_mechs); - if (ret != GSS_S_COMPLETE) { - if (handle->mechanisms != NULL) - gss_release_oid_set(NULL, &handle->mechanisms); - HEIMDAL_MUTEX_destroy(&handle->cred_id_mutex); - krb5_free_principal(context, handle->principal); - free(handle); - return (ret); - } - *minor_status = 0; - if (time_rec) { - ret = _gsskrb5_lifetime_left(minor_status, - context, - handle->lifetime, - time_rec); - - if (ret) - return ret; - } - handle->usage = cred_usage; - *output_cred_handle = (gss_cred_id_t)handle; - return (GSS_S_COMPLETE); -} |
