lib/gssapi/krb5/authorize_localname.c

   1 /*
   2  * Copyright (c) 2011, PADL Software Pty Ltd.
   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  *
   9  * 1. Redistributions of source code must retain the above copyright
  10  *    notice, this list of conditions and the following disclaimer.
  11  *
  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  * 3. Neither the name of PADL Software nor the names of its contributors
  17  *    may be used to endorse or promote products derived from this software
  18  *    without specific prior written permission.
  19  *
  20  * THIS SOFTWARE IS PROVIDED BY PADL SOFTWARE AND CONTRIBUTORS ``AS IS'' AND
  21  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  22  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  23  * ARE DISCLAIMED.  IN NO EVENT SHALL PADL SOFTWARE OR CONTRIBUTORS BE LIABLE
  24  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  25  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  26  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  27  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  28  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  29  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  30  * SUCH DAMAGE.
  31  */
  32
  33 #include "gsskrb5_locl.h"
  34
  35 OM_uint32 GSSAPI_CALLCONV
  36 _gsskrb5_authorize_localname(OM_uint32 *minor_status,
  37                              const gss_name_t input_name,
  38                              gss_const_buffer_t user_name,
  39                              gss_const_OID user_name_type)
  40 {
  41     krb5_context context;
  42     krb5_principal princ = (krb5_principal)input_name;
  43     char *user;
  44     int user_ok;
  45
  46     if (!gss_oid_equal(user_name_type, GSS_C_NT_USER_NAME))
  47         return GSS_S_BAD_NAMETYPE;
  48
  49     GSSAPI_KRB5_INIT(&context);
  50
  51     user = malloc(user_name->length + 1);
  52     if (user == NULL) {
  53         *minor_status = ENOMEM;
  54         return GSS_S_FAILURE;
  55     }
  56
  57     memcpy(user, user_name->value, user_name->length);
  58     user[user_name->length] = '\0';
  59
  60     *minor_status = 0;
  61     user_ok = krb5_kuserok(context, princ, user);
  62
  63     free(user);
  64
  65     return user_ok ? GSS_S_COMPLETE : GSS_S_UNAUTHORIZED;
  66 }