/* * Copyright (c) 1997 - 2003 Kungliga Tekniska H�gskolan * (Royal Institute of Technology, Stockholm, Sweden). * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * 3. Neither the name of the Institute nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #include "gssapi_locl.h" RCSID("$Id: encapsulate.c,v 1.8 2003/09/04 18:08:55 lha Exp $"); void _gssapi_encap_length (size_t data_len, size_t *len, size_t *total_len, const gss_OID mech) { size_t len_len; *len = 1 + 1 + mech->length + data_len; len_len = length_len(*len); *total_len = 1 + len_len + *len; } void gssapi_krb5_encap_length (size_t data_len, size_t *len, size_t *total_len, const gss_OID mech) { _gssapi_encap_length(data_len + 2, len, total_len, mech); } u_char * gssapi_krb5_make_header (u_char *p, size_t len, const u_char *type, const gss_OID mech) { p = _gssapi_make_mech_header(p, len, mech); memcpy (p, type, 2); p += 2; return p; } u_char * _gssapi_make_mech_header(u_char *p, size_t len, const gss_OID mech) { int e; size_t len_len, foo; *p++ = 0x60; len_len = length_len(len); e = der_put_length (p + len_len - 1, len_len, len, &foo); if(e || foo != len_len) abort (); p += len_len; *p++ = 0x06; *p++ = mech->length; memcpy (p, mech->elements, mech->length); p += mech->length; return p; } /* * Give it a krb5_data and it will encapsulate with extra GSS-API wrappings. */ OM_uint32 _gssapi_encapsulate( OM_uint32 *minor_status, const krb5_data *in_data, gss_buffer_t output_token, const gss_OID mech ) { size_t len, outer_len; u_char *p; _gssapi_encap_length (in_data->length, &len, &outer_len, mech); output_token->length = outer_len; output_token->value = malloc (outer_len); if (output_token->value == NULL) { *minor_status = ENOMEM; return GSS_S_FAILURE; } p = _gssapi_make_mech_header (output_token->value, len, mech); memcpy (p, in_data->data, in_data->length); return GSS_S_COMPLETE; } /* * Give it a krb5_data and it will encapsulate with extra GSS-API krb5 * wrappings. */ OM_uint32 gssapi_krb5_encapsulate( OM_uint32 *minor_status, const krb5_data *in_data, gss_buffer_t output_token, const u_char *type, const gss_OID mech ) { size_t len, outer_len; u_char *p; gssapi_krb5_encap_length (in_data->length, &len, &outer_len, mech); output_token->length = outer_len; output_token->value = malloc (outer_len); if (output_token->value == NULL) { *minor_status = ENOMEM; return GSS_S_FAILURE; } p = gssapi_krb5_make_header (output_token->value, len, type, mech); memcpy (p, in_data->data, in_data->length); return GSS_S_COMPLETE; }