source4/heimdal/lib/gssapi/mech/gss_add_cred.c

   1 /*-
   2  * Copyright (c) 2005 Doug Rabson
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  *
  14  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  15  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  17  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  18  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  19  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  20  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  21  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  22  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  23  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  24  * SUCH DAMAGE.
  25  *
  26  *      $FreeBSD: src/lib/libgssapi/gss_add_cred.c,v 1.1 2005/12/29 14:40:20 dfr Exp $
  27  */
  28
  29 #include "mech_locl.h"
  30
  31 struct _gss_mechanism_cred *
  32 _gss_copy_cred(struct _gss_mechanism_cred *mc)
  33 {
  34         struct _gss_mechanism_cred *new_mc;
  35         gssapi_mech_interface m = mc->gmc_mech;
  36         OM_uint32 major_status, minor_status;
  37         gss_name_t name;
  38         gss_cred_id_t cred;
  39         OM_uint32 initiator_lifetime, acceptor_lifetime;
  40         gss_cred_usage_t cred_usage;
  41
  42         major_status = m->gm_inquire_cred_by_mech(&minor_status,
  43             mc->gmc_cred, mc->gmc_mech_oid,
  44             &name, &initiator_lifetime, &acceptor_lifetime, &cred_usage);
  45         if (major_status) {
  46                 _gss_mg_error(m, major_status, minor_status);
  47                 return (0);
  48         }
  49
  50         major_status = m->gm_add_cred(&minor_status,
  51             GSS_C_NO_CREDENTIAL, name, mc->gmc_mech_oid,
  52             cred_usage, initiator_lifetime, acceptor_lifetime,
  53             &cred, 0, 0, 0);
  54         m->gm_release_name(&minor_status, &name);
  55
  56         if (major_status) {
  57                 _gss_mg_error(m, major_status, minor_status);
  58                 return (0);
  59         }
  60
  61         new_mc = malloc(sizeof(struct _gss_mechanism_cred));
  62         if (!new_mc) {
  63                 m->gm_release_cred(&minor_status, &cred);
  64                 return (0);
  65         }
  66         new_mc->gmc_mech = m;
  67         new_mc->gmc_mech_oid = &m->gm_mech_oid;
  68         new_mc->gmc_cred = cred;
  69
  70         return (new_mc);
  71 }
  72
  73 GSSAPI_LIB_FUNCTION OM_uint32 GSSAPI_LIB_CALL
  74 gss_add_cred(OM_uint32 *minor_status,
  75     const gss_cred_id_t input_cred_handle,
  76     const gss_name_t desired_name,
  77     const gss_OID desired_mech,
  78     gss_cred_usage_t cred_usage,
  79     OM_uint32 initiator_time_req,
  80     OM_uint32 acceptor_time_req,
  81     gss_cred_id_t *output_cred_handle,
  82     gss_OID_set *actual_mechs,
  83     OM_uint32 *initiator_time_rec,
  84     OM_uint32 *acceptor_time_rec)
  85 {
  86         OM_uint32 major_status;
  87         gssapi_mech_interface m;
  88         struct _gss_cred *cred = (struct _gss_cred *) input_cred_handle;
  89         struct _gss_cred *new_cred;
  90         gss_cred_id_t release_cred;
  91         struct _gss_mechanism_cred *mc, *target_mc, *copy_mc;
  92         struct _gss_mechanism_name *mn;
  93         OM_uint32 junk;
  94
  95         *minor_status = 0;
  96         *output_cred_handle = GSS_C_NO_CREDENTIAL;
  97         if (initiator_time_rec)
  98             *initiator_time_rec = 0;
  99         if (acceptor_time_rec)
 100             *acceptor_time_rec = 0;
 101         if (actual_mechs)
 102             *actual_mechs = GSS_C_NO_OID_SET;
 103
 104         new_cred = malloc(sizeof(struct _gss_cred));
 105         if (!new_cred) {
 106                 *minor_status = ENOMEM;
 107                 return (GSS_S_FAILURE);
 108         }
 109         HEIM_SLIST_INIT(&new_cred->gc_mc);
 110
 111         /*
 112          * We go through all the mc attached to the input_cred_handle
 113          * and check the mechanism. If it matches, we call
 114          * gss_add_cred for that mechanism, otherwise we copy the mc
 115          * to new_cred.
 116          */
 117         target_mc = 0;
 118         if (cred) {
 119                 HEIM_SLIST_FOREACH(mc, &cred->gc_mc, gmc_link) {
 120                         if (gss_oid_equal(mc->gmc_mech_oid, desired_mech)) {
 121                                 target_mc = mc;
 122                         }
 123                         copy_mc = _gss_copy_cred(mc);
 124                         if (!copy_mc) {
 125                                 release_cred = (gss_cred_id_t)new_cred;
 126                                 gss_release_cred(&junk, &release_cred);
 127                                 *minor_status = ENOMEM;
 128                                 return (GSS_S_FAILURE);
 129                         }
 130                         HEIM_SLIST_INSERT_HEAD(&new_cred->gc_mc, copy_mc, gmc_link);
 131                 }
 132         }
 133
 134         /*
 135          * Figure out a suitable mn, if any.
 136          */
 137         if (desired_name) {
 138                 major_status = _gss_find_mn(minor_status,
 139                                             (struct _gss_name *) desired_name,
 140                                             desired_mech,
 141                                             &mn);
 142                 if (major_status != GSS_S_COMPLETE) {
 143                         free(new_cred);
 144                         return major_status;
 145                 }
 146         } else {
 147                 mn = 0;
 148         }
 149
 150         m = __gss_get_mechanism(desired_mech);
 151
 152         mc = malloc(sizeof(struct _gss_mechanism_cred));
 153         if (!mc) {
 154                 release_cred = (gss_cred_id_t)new_cred;
 155                 gss_release_cred(&junk, &release_cred);
 156                 *minor_status = ENOMEM;
 157                 return (GSS_S_FAILURE);
 158         }
 159         mc->gmc_mech = m;
 160         mc->gmc_mech_oid = &m->gm_mech_oid;
 161
 162         major_status = m->gm_add_cred(minor_status,
 163             target_mc ? target_mc->gmc_cred : GSS_C_NO_CREDENTIAL,
 164             desired_name ? mn->gmn_name : GSS_C_NO_NAME,
 165             desired_mech,
 166             cred_usage,
 167             initiator_time_req,
 168             acceptor_time_req,
 169             &mc->gmc_cred,
 170             actual_mechs,
 171             initiator_time_rec,
 172             acceptor_time_rec);
 173
 174         if (major_status) {
 175                 _gss_mg_error(m, major_status, *minor_status);
 176                 release_cred = (gss_cred_id_t)new_cred;
 177                 gss_release_cred(&junk, &release_cred);
 178                 free(mc);
 179                 return (major_status);
 180         }
 181         HEIM_SLIST_INSERT_HEAD(&new_cred->gc_mc, mc, gmc_link);
 182         *output_cred_handle = (gss_cred_id_t) new_cred;
 183
 184         return (GSS_S_COMPLETE);
 185 }
 186