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

   1 /*      $NetBSD: gss_add_cred.c,v 1.1.1.2 2014/04/24 12:45:29 pettai 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_add_cred.c,v 1.1 2005/12/29 14:40:20 dfr Exp $
  29  */
  30
  31 #include "mech_locl.h"
  32
  33 struct _gss_mechanism_cred *
  34 _gss_copy_cred(struct _gss_mechanism_cred *mc)
  35 {
  36         struct _gss_mechanism_cred *new_mc;
  37         gssapi_mech_interface m = mc->gmc_mech;
  38         OM_uint32 major_status, minor_status;
  39         gss_name_t name;
  40         gss_cred_id_t cred;
  41         OM_uint32 initiator_lifetime, acceptor_lifetime;
  42         gss_cred_usage_t cred_usage;
  43
  44         major_status = m->gm_inquire_cred_by_mech(&minor_status,
  45             mc->gmc_cred, mc->gmc_mech_oid,
  46             &name, &initiator_lifetime, &acceptor_lifetime, &cred_usage);
  47         if (major_status) {
  48                 _gss_mg_error(m, major_status, minor_status);
  49                 return (0);
  50         }
  51
  52         major_status = m->gm_add_cred(&minor_status,
  53             GSS_C_NO_CREDENTIAL, name, mc->gmc_mech_oid,
  54             cred_usage, initiator_lifetime, acceptor_lifetime,
  55             &cred, 0, 0, 0);
  56         m->gm_release_name(&minor_status, &name);
  57
  58         if (major_status) {
  59                 _gss_mg_error(m, major_status, minor_status);
  60                 return (0);
  61         }
  62
  63         new_mc = malloc(sizeof(struct _gss_mechanism_cred));
  64         if (!new_mc) {
  65                 m->gm_release_cred(&minor_status, &cred);
  66                 return (0);
  67         }
  68         new_mc->gmc_mech = m;
  69         new_mc->gmc_mech_oid = &m->gm_mech_oid;
  70         new_mc->gmc_cred = cred;
  71
  72         return (new_mc);
  73 }
  74
  75 GSSAPI_LIB_FUNCTION OM_uint32 GSSAPI_LIB_CALL
  76 gss_add_cred(OM_uint32 *minor_status,
  77     const gss_cred_id_t input_cred_handle,
  78     const gss_name_t desired_name,
  79     const gss_OID desired_mech,
  80     gss_cred_usage_t cred_usage,
  81     OM_uint32 initiator_time_req,
  82     OM_uint32 acceptor_time_req,
  83     gss_cred_id_t *output_cred_handle,
  84     gss_OID_set *actual_mechs,
  85     OM_uint32 *initiator_time_rec,
  86     OM_uint32 *acceptor_time_rec)
  87 {
  88         OM_uint32 major_status;
  89         gssapi_mech_interface m;
  90         struct _gss_cred *cred = (struct _gss_cred *) input_cred_handle;
  91         struct _gss_cred *new_cred;
  92         gss_cred_id_t release_cred;
  93         struct _gss_mechanism_cred *mc, *target_mc, *copy_mc;
  94         struct _gss_mechanism_name *mn;
  95         OM_uint32 junk;
  96
  97         *minor_status = 0;
  98         *output_cred_handle = GSS_C_NO_CREDENTIAL;
  99         if (initiator_time_rec)
 100             *initiator_time_rec = 0;
 101         if (acceptor_time_rec)
 102             *acceptor_time_rec = 0;
 103         if (actual_mechs)
 104             *actual_mechs = GSS_C_NO_OID_SET;
 105
 106         new_cred = malloc(sizeof(struct _gss_cred));
 107         if (!new_cred) {
 108                 *minor_status = ENOMEM;
 109                 return (GSS_S_FAILURE);
 110         }
 111         HEIM_SLIST_INIT(&new_cred->gc_mc);
 112
 113         /*
 114          * We go through all the mc attached to the input_cred_handle
 115          * and check the mechanism. If it matches, we call
 116          * gss_add_cred for that mechanism, otherwise we copy the mc
 117          * to new_cred.
 118          */
 119         target_mc = 0;
 120         if (cred) {
 121                 HEIM_SLIST_FOREACH(mc, &cred->gc_mc, gmc_link) {
 122                         if (gss_oid_equal(mc->gmc_mech_oid, desired_mech)) {
 123                                 target_mc = mc;
 124                         }
 125                         copy_mc = _gss_copy_cred(mc);
 126                         if (!copy_mc) {
 127                                 release_cred = (gss_cred_id_t)new_cred;
 128                                 gss_release_cred(&junk, &release_cred);
 129                                 *minor_status = ENOMEM;
 130                                 return (GSS_S_FAILURE);
 131                         }
 132                         HEIM_SLIST_INSERT_HEAD(&new_cred->gc_mc, copy_mc, gmc_link);
 133                 }
 134         }
 135
 136         /*
 137          * Figure out a suitable mn, if any.
 138          */
 139         if (desired_name) {
 140                 major_status = _gss_find_mn(minor_status,
 141                                             (struct _gss_name *) desired_name,
 142                                             desired_mech,
 143                                             &mn);
 144                 if (major_status != GSS_S_COMPLETE) {
 145                         free(new_cred);
 146                         return major_status;
 147                 }
 148         } else {
 149                 mn = 0;
 150         }
 151
 152         m = __gss_get_mechanism(desired_mech);
 153
 154         mc = malloc(sizeof(struct _gss_mechanism_cred));
 155         if (!mc) {
 156                 release_cred = (gss_cred_id_t)new_cred;
 157                 gss_release_cred(&junk, &release_cred);
 158                 *minor_status = ENOMEM;
 159                 return (GSS_S_FAILURE);
 160         }
 161         mc->gmc_mech = m;
 162         mc->gmc_mech_oid = &m->gm_mech_oid;
 163
 164         major_status = m->gm_add_cred(minor_status,
 165             target_mc ? target_mc->gmc_cred : GSS_C_NO_CREDENTIAL,
 166             desired_name ? mn->gmn_name : GSS_C_NO_NAME,
 167             desired_mech,
 168             cred_usage,
 169             initiator_time_req,
 170             acceptor_time_req,
 171             &mc->gmc_cred,
 172             actual_mechs,
 173             initiator_time_rec,
 174             acceptor_time_rec);
 175
 176         if (major_status) {
 177                 _gss_mg_error(m, major_status, *minor_status);
 178                 release_cred = (gss_cred_id_t)new_cred;
 179                 gss_release_cred(&junk, &release_cred);
 180                 free(mc);
 181                 return (major_status);
 182         }
 183         HEIM_SLIST_INSERT_HEAD(&new_cred->gc_mc, mc, gmc_link);
 184         *output_cred_handle = (gss_cred_id_t) new_cred;
 185
 186         return (GSS_S_COMPLETE);
 187 }
 188