2 * Copyright (c) 1997 Kungliga Tekniska Högskolan
3 * (Royal Institute of Technology, Stockholm, Sweden).
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
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.
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.
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
34 #include "gssapi_locl.h"
36 RCSID("$Id: decapsulate.c,v 1.5 1999/12/02 17:05:03 joda Exp $");
39 gssapi_krb5_verify_header(u_char **str,
43 size_t len, len_len, mech_len, foo;
48 return GSS_S_DEFECTIVE_TOKEN;
49 e = der_get_length (p, total_len - 1, &len, &len_len);
50 if (e || 1 + len_len + len != total_len)
54 return GSS_S_DEFECTIVE_TOKEN;
55 e = der_get_length (p, total_len - 1 - len_len - 1,
60 if (mech_len != GSS_KRB5_MECHANISM->length)
61 return GSS_S_BAD_MECH;
63 GSS_KRB5_MECHANISM->elements,
64 GSS_KRB5_MECHANISM->length) != 0)
65 return GSS_S_BAD_MECH;
67 if (memcmp (p, type, 2) != 0)
68 return GSS_S_DEFECTIVE_TOKEN;
71 return GSS_S_COMPLETE;
75 * Remove the GSS-API wrapping from `in_token' giving `out_data.
76 * Does not copy data, so just free `in_token'.
80 gssapi_krb5_decapsulate(
81 gss_buffer_t input_token_buffer,
89 p = input_token_buffer->value;
90 ret = gssapi_krb5_verify_header(&p,
91 input_token_buffer->length,
96 out_data->length = input_token_buffer->length -
97 (p - (u_char *)input_token_buffer->value);
99 return GSS_S_COMPLETE;