crypto/external/bsd/heimdal/dist/lib/gssapi/krb5/export_name.c

   1 /*      $NetBSD: export_name.c,v 1.1.1.1 2011/04/13 18:14:45 elric Exp $        */
   2
   3 /*
   4  * Copyright (c) 1997, 1999, 2003 Kungliga Tekniska Högskolan
   5  * (Royal Institute of Technology, Stockholm, Sweden).
   6  * All rights reserved.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted provided that the following conditions
  10  * are met:
  11  *
  12  * 1. Redistributions of source code must retain the above copyright
  13  *    notice, this list of conditions and the following disclaimer.
  14  *
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in the
  17  *    documentation and/or other materials provided with the distribution.
  18  *
  19  * 3. Neither the name of the Institute nor the names of its contributors
  20  *    may be used to endorse or promote products derived from this software
  21  *    without specific prior written permission.
  22  *
  23  * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
  24  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  25  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  26  * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
  27  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  28  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  29  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  30  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  31  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  32  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  33  * SUCH DAMAGE.
  34  */
  35
  36 #include "gsskrb5_locl.h"
  37
  38 OM_uint32 GSSAPI_CALLCONV _gsskrb5_export_name
  39            (OM_uint32  * minor_status,
  40             const gss_name_t input_name,
  41             gss_buffer_t exported_name
  42            )
  43 {
  44     krb5_context context;
  45     krb5_const_principal princ = (krb5_const_principal)input_name;
  46     krb5_error_code kret;
  47     char *buf, *name;
  48     size_t len;
  49
  50     GSSAPI_KRB5_INIT (&context);
  51
  52     kret = krb5_unparse_name (context, princ, &name);
  53     if (kret) {
  54         *minor_status = kret;
  55         return GSS_S_FAILURE;
  56     }
  57     len = strlen (name);
  58
  59     exported_name->length = 10 + len + GSS_KRB5_MECHANISM->length;
  60     exported_name->value  = malloc(exported_name->length);
  61     if (exported_name->value == NULL) {
  62         free (name);
  63         *minor_status = ENOMEM;
  64         return GSS_S_FAILURE;
  65     }
  66
  67     /* TOK, MECH_OID_LEN, DER(MECH_OID), NAME_LEN, NAME */
  68
  69     buf = exported_name->value;
  70     memcpy(buf, "\x04\x01", 2);
  71     buf += 2;
  72     buf[0] = ((GSS_KRB5_MECHANISM->length + 2) >> 8) & 0xff;
  73     buf[1] = (GSS_KRB5_MECHANISM->length + 2) & 0xff;
  74     buf+= 2;
  75     buf[0] = 0x06;
  76     buf[1] = (GSS_KRB5_MECHANISM->length) & 0xFF;
  77     buf+= 2;
  78
  79     memcpy(buf, GSS_KRB5_MECHANISM->elements, GSS_KRB5_MECHANISM->length);
  80     buf += GSS_KRB5_MECHANISM->length;
  81
  82     buf[0] = (len >> 24) & 0xff;
  83     buf[1] = (len >> 16) & 0xff;
  84     buf[2] = (len >> 8) & 0xff;
  85     buf[3] = (len) & 0xff;
  86     buf += 4;
  87
  88     memcpy (buf, name, len);
  89
  90     free (name);
  91
  92     *minor_status = 0;
  93     return GSS_S_COMPLETE;
  94 }