crypto/external/bsd/heimdal/dist/lib/gssapi/mech/gss_inquire_cred.c

   1 /*      $NetBSD: gss_inquire_cred.c,v 1.1.1.1 2011/04/13 18:14:46 elric Exp $   */
   2
   3 /*-
   4  * Copyright (c) 2005 Doug Rabson
   5  * All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  *
  16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  19  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  20  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  26  * SUCH DAMAGE.
  27  *
  28  *      $FreeBSD: src/lib/libgssapi/gss_inquire_cred.c,v 1.1 2005/12/29 14:40:20 dfr Exp $
  29  */
  30
  31 #include "mech_locl.h"
  32
  33 #define AUSAGE 1
  34 #define IUSAGE 2
  35
  36 static void
  37 updateusage(gss_cred_usage_t usage, int *usagemask)
  38 {
  39     if (usage == GSS_C_BOTH)
  40         *usagemask |= AUSAGE | IUSAGE;
  41     else if (usage == GSS_C_ACCEPT)
  42         *usagemask |= AUSAGE;
  43     else if (usage == GSS_C_INITIATE)
  44         *usagemask |= IUSAGE;
  45 }
  46
  47 GSSAPI_LIB_FUNCTION OM_uint32 GSSAPI_LIB_CALL
  48 gss_inquire_cred(OM_uint32 *minor_status,
  49     const gss_cred_id_t cred_handle,
  50     gss_name_t *name_ret,
  51     OM_uint32 *lifetime,
  52     gss_cred_usage_t *cred_usage,
  53     gss_OID_set *mechanisms)
  54 {
  55         OM_uint32 major_status;
  56         struct _gss_mech_switch *m;
  57         struct _gss_cred *cred = (struct _gss_cred *) cred_handle;
  58         struct _gss_name *name;
  59         struct _gss_mechanism_name *mn;
  60         OM_uint32 min_lifetime;
  61         int found = 0;
  62         int usagemask = 0;
  63         gss_cred_usage_t usage;
  64
  65         _gss_load_mech();
  66
  67         *minor_status = 0;
  68         if (name_ret)
  69                 *name_ret = GSS_C_NO_NAME;
  70         if (lifetime)
  71                 *lifetime = 0;
  72         if (cred_usage)
  73                 *cred_usage = 0;
  74         if (mechanisms)
  75                 *mechanisms = GSS_C_NO_OID_SET;
  76
  77         if (name_ret) {
  78                 name = calloc(1, sizeof(*name));
  79                 if (name == NULL) {
  80                         *minor_status = ENOMEM;
  81                         return (GSS_S_FAILURE);
  82                 }
  83                 HEIM_SLIST_INIT(&name->gn_mn);
  84         } else {
  85                 name = NULL;
  86         }
  87
  88         if (mechanisms) {
  89                 major_status = gss_create_empty_oid_set(minor_status,
  90                     mechanisms);
  91                 if (major_status) {
  92                         if (name) free(name);
  93                         return (major_status);
  94                 }
  95         }
  96
  97         min_lifetime = GSS_C_INDEFINITE;
  98         if (cred) {
  99                 struct _gss_mechanism_cred *mc;
 100
 101                 HEIM_SLIST_FOREACH(mc, &cred->gc_mc, gmc_link) {
 102                         gss_name_t mc_name;
 103                         OM_uint32 mc_lifetime;
 104
 105                         major_status = mc->gmc_mech->gm_inquire_cred(minor_status,
 106                             mc->gmc_cred, &mc_name, &mc_lifetime, &usage, NULL);
 107                         if (major_status)
 108                                 continue;
 109
 110                         updateusage(usage, &usagemask);
 111                         if (name) {
 112                                 mn = malloc(sizeof(struct _gss_mechanism_name));
 113                                 if (!mn) {
 114                                         mc->gmc_mech->gm_release_name(minor_status,
 115                                             &mc_name);
 116                                         continue;
 117                                 }
 118                                 mn->gmn_mech = mc->gmc_mech;
 119                                 mn->gmn_mech_oid = mc->gmc_mech_oid;
 120                                 mn->gmn_name = mc_name;
 121                                 HEIM_SLIST_INSERT_HEAD(&name->gn_mn, mn, gmn_link);
 122                         } else {
 123                                 mc->gmc_mech->gm_release_name(minor_status,
 124                                     &mc_name);
 125                         }
 126
 127                         if (mc_lifetime < min_lifetime)
 128                                 min_lifetime = mc_lifetime;
 129
 130                         if (mechanisms)
 131                                 gss_add_oid_set_member(minor_status,
 132                                     mc->gmc_mech_oid, mechanisms);
 133                         found++;
 134                 }
 135         } else {
 136                 HEIM_SLIST_FOREACH(m, &_gss_mechs, gm_link) {
 137                         gss_name_t mc_name;
 138                         OM_uint32 mc_lifetime;
 139
 140                         major_status = m->gm_mech.gm_inquire_cred(minor_status,
 141                             GSS_C_NO_CREDENTIAL, &mc_name, &mc_lifetime,
 142                             &usage, NULL);
 143                         if (major_status)
 144                                 continue;
 145
 146                         updateusage(usage, &usagemask);
 147                         if (name && mc_name) {
 148                                 mn = malloc(
 149                                         sizeof(struct _gss_mechanism_name));
 150                                 if (!mn) {
 151                                         m->gm_mech.gm_release_name(
 152                                                 minor_status, &mc_name);
 153                                         continue;
 154                                 }
 155                                 mn->gmn_mech = &m->gm_mech;
 156                                 mn->gmn_mech_oid = &m->gm_mech_oid;
 157                                 mn->gmn_name = mc_name;
 158                                 HEIM_SLIST_INSERT_HEAD(&name->gn_mn, mn, gmn_link);
 159                         } else if (mc_name) {
 160                                 m->gm_mech.gm_release_name(minor_status,
 161                                     &mc_name);
 162                         }
 163
 164                         if (mc_lifetime < min_lifetime)
 165                                 min_lifetime = mc_lifetime;
 166
 167                         if (mechanisms)
 168                                 gss_add_oid_set_member(minor_status,
 169                                     &m->gm_mech_oid, mechanisms);
 170                         found++;
 171                 }
 172         }
 173
 174         if (found == 0) {
 175                 gss_name_t n = (gss_name_t)name;
 176                 if (n)
 177                         gss_release_name(minor_status, &n);
 178                 gss_release_oid_set(minor_status, mechanisms);
 179                 *minor_status = 0;
 180                 return (GSS_S_NO_CRED);
 181         }
 182
 183         *minor_status = 0;
 184         if (name_ret)
 185                 *name_ret = (gss_name_t) name;
 186         if (lifetime)
 187                 *lifetime = min_lifetime;
 188         if (cred_usage) {
 189                 if ((usagemask & (AUSAGE|IUSAGE)) == (AUSAGE|IUSAGE))
 190                         *cred_usage = GSS_C_BOTH;
 191                 else if (usagemask & IUSAGE)
 192                         *cred_usage = GSS_C_INITIATE;
 193                 else if (usagemask & AUSAGE)
 194                         *cred_usage = GSS_C_ACCEPT;
 195         }
 196         return (GSS_S_COMPLETE);
 197 }