wmi-1.3.16 from opsview.com
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/*
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* Copyright (c) 1997 - 2003 Kungliga Tekniska Högskolan
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* (Royal Institute of Technology, Stockholm, Sweden).
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* 3. Neither the name of the Institute nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include "krb5/gsskrb5_locl.h"
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RCSID("$Id: encapsulate.c,v 1.12 2006/10/14 10:02:56 lha Exp $");
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void
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_gssapi_encap_length (size_t data_len,
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size_t *len,
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size_t *total_len,
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const gss_OID mech)
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{
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size_t len_len;
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*len = 1 + 1 + mech->length + data_len;
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len_len = der_length_len(*len);
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*total_len = 1 + len_len + *len;
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}
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void
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_gsskrb5_encap_length (size_t data_len,
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size_t *len,
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size_t *total_len,
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const gss_OID mech)
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{
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_gssapi_encap_length(data_len + 2, len, total_len, mech);
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}
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void *
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_gsskrb5_make_header (void *ptr,
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size_t len,
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const void *type,
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const gss_OID mech)
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{
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u_char *p = ptr;
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p = _gssapi_make_mech_header(p, len, mech);
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memcpy (p, type, 2);
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p += 2;
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return p;
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}
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void *
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_gssapi_make_mech_header(void *ptr,
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size_t len,
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const gss_OID mech)
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{
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u_char *p = ptr;
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int e;
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size_t len_len, foo;
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*p++ = 0x60;
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len_len = der_length_len(len);
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e = der_put_length (p + len_len - 1, len_len, len, &foo);
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if(e || foo != len_len)
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abort ();
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p += len_len;
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*p++ = 0x06;
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*p++ = mech->length;
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memcpy (p, mech->elements, mech->length);
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p += mech->length;
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return p;
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}
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/*
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* Give it a krb5_data and it will encapsulate with extra GSS-API wrappings.
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*/
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OM_uint32
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_gssapi_encapsulate(
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OM_uint32 *minor_status,
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const krb5_data *in_data,
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gss_buffer_t output_token,
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const gss_OID mech
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)
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{
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size_t len, outer_len;
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void *p;
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_gssapi_encap_length (in_data->length, &len, &outer_len, mech);
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output_token->length = outer_len;
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output_token->value = malloc (outer_len);
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if (output_token->value == NULL) {
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*minor_status = ENOMEM;
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return GSS_S_FAILURE;
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}
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p = _gssapi_make_mech_header (output_token->value, len, mech);
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memcpy (p, in_data->data, in_data->length);
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return GSS_S_COMPLETE;
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}
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/*
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* Give it a krb5_data and it will encapsulate with extra GSS-API krb5
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* wrappings.
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*/
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OM_uint32
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_gsskrb5_encapsulate(
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OM_uint32 *minor_status,
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const krb5_data *in_data,
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gss_buffer_t output_token,
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const void *type,
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const gss_OID mech
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)
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{
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size_t len, outer_len;
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u_char *p;
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_gsskrb5_encap_length (in_data->length, &len, &outer_len, mech);
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output_token->length = outer_len;
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output_token->value = malloc (outer_len);
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if (output_token->value == NULL) {
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*minor_status = ENOMEM;
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return GSS_S_FAILURE;
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}
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p = _gsskrb5_make_header (output_token->value, len, type, mech);
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memcpy (p, in_data->data, in_data->length);
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return GSS_S_COMPLETE;
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}
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