lib/krb5/asn1_glue.c

   1 /*
   2  * Copyright (c) 1997 Kungliga Tekniska Högskolan
   3  * (Royal Institute of Technology, Stockholm, Sweden).
   4  * All rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  *
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  *
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in the
  15  *    documentation and/or other materials provided with the distribution.
  16  *
  17  * 3. Neither the name of the Institute nor the names of its contributors
  18  *    may be used to endorse or promote products derived from this software
  19  *    without specific prior written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
  22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
  25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  31  * SUCH DAMAGE.
  32  */
  33
  34 /*
  35  *
  36  */
  37
  38 #include "krb5_locl.h"
  39
  40 KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
  41 _krb5_principal2principalname (PrincipalName *p,
  42                                const krb5_principal from)
  43 {
  44     return copy_PrincipalName(&from->name, p);
  45 }
  46
  47 KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
  48 _krb5_principalname2krb5_principal (krb5_context context,
  49                                     krb5_principal *principal,
  50                                     const PrincipalName from,
  51                                     const Realm realm)
  52 {
  53     krb5_error_code ret;
  54     krb5_principal p;
  55
  56     p = calloc(1, sizeof(*p));
  57     if (p == NULL)
  58         return krb5_enomem(context);
  59     ret = copy_PrincipalName(&from, &p->name);
  60     if (ret) {
  61         free(p);
  62         return ret;
  63     }
  64     p->realm = strdup(realm);
  65     if (p->realm == NULL) {
  66         free_PrincipalName(&p->name);
  67         free(p);
  68         return krb5_enomem(context);
  69     }
  70     *principal = p;
  71     return 0;
  72 }
  73
  74 KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
  75 _krb5_ticket2krb5_principal(krb5_context context,
  76                             krb5_principal *principal,
  77                             const EncTicketPart *ticket,
  78                             const AuthorizationData *authenticator_ad)
  79 {
  80     krb5_error_code ret;
  81     krb5_principal p = NULL;
  82
  83     *principal = NULL;
  84
  85     ret = _krb5_principalname2krb5_principal(context,
  86                                              &p,
  87                                              ticket->cname,
  88                                              ticket->crealm);
  89     if (ret == 0 &&
  90         (p->nameattrs = calloc(1, sizeof(p->nameattrs[0]))) == NULL)
  91         ret = krb5_enomem(context);
  92     if (ret == 0)
  93         p->nameattrs->authenticated = 1;
  94     if (ret == 0 &&
  95         (p->nameattrs->source =
  96          calloc(1, sizeof(p->nameattrs->source[0]))) == NULL)
  97         ret = krb5_enomem(context);
  98     if (ret == 0) {
  99         p->nameattrs->source->element =
 100             choice_PrincipalNameAttrSrc_enc_ticket_part;
 101         ret = copy_EncTicketPart(ticket,
 102                                  &p->nameattrs->source->u.enc_ticket_part);
 103         /* NOTE: we don't want to keep a copy of the session key here! */
 104         if (ret == 0)
 105             der_free_octet_string(&p->nameattrs->source->u.enc_ticket_part.key.keyvalue);
 106     }
 107     if (ret == 0 && authenticator_ad) {
 108         p->nameattrs->authenticator_ad =
 109             calloc(1, sizeof(p->nameattrs->authenticator_ad[0]));
 110         if (p->nameattrs->authenticator_ad == NULL)
 111             ret = krb5_enomem(context);
 112         if (ret == 0)
 113             ret = copy_AuthorizationData(authenticator_ad,
 114                                          p->nameattrs->authenticator_ad);
 115     }
 116
 117     if (ret == 0)
 118         *principal = p;
 119     else
 120         krb5_free_principal(context, p);
 121     return ret;
 122 }
 123
 124 KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
 125 _krb5_kdcrep2krb5_principal(krb5_context context,
 126                             krb5_principal *principal,
 127                             const EncKDCRepPart *kdcrep)
 128 {
 129     krb5_error_code ret;
 130     krb5_principal p = NULL;
 131
 132     *principal = NULL;
 133
 134     ret = _krb5_principalname2krb5_principal(context,
 135                                              &p,
 136                                              kdcrep->sname,
 137                                              kdcrep->srealm);
 138     if (ret == 0 &&
 139         (p->nameattrs = calloc(1, sizeof(p->nameattrs[0]))) == NULL)
 140         ret = krb5_enomem(context);
 141     if (ret == 0)
 142         p->nameattrs->authenticated = 1;
 143     if (ret == 0 &&
 144         (p->nameattrs->source =
 145          calloc(1, sizeof(p->nameattrs->source[0]))) == NULL)
 146         ret = krb5_enomem(context);
 147     if (ret == 0) {
 148         p->nameattrs->source->element =
 149             choice_PrincipalNameAttrSrc_enc_kdc_rep_part;
 150         ret = copy_EncKDCRepPart(kdcrep,
 151                                  &p->nameattrs->source->u.enc_kdc_rep_part);
 152         /* NOTE: we don't want to keep a copy of the session key here! */
 153         if (ret == 0)
 154             der_free_octet_string(&p->nameattrs->source->u.enc_kdc_rep_part.key.keyvalue);
 155     }
 156
 157     if (ret == 0)
 158         *principal = p;
 159     else
 160         krb5_free_principal(context, p);
 161     return ret;
 162 }