1eb329c605
git-svn-id: svn://svn.h5l.se/heimdal/trunk/heimdal@24721 ec53bebd-3082-4978-b11e-865c3cabbd6b
270 lines
7.4 KiB
C
270 lines
7.4 KiB
C
/*
|
|
* Copyright (c) 2008 Kungliga Tekniska Högskolan
|
|
* (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 "gsskrb5_locl.h"
|
|
|
|
#include <roken.h>
|
|
|
|
static OM_uint32
|
|
iov_allocate(OM_uint32 *minor_status, gss_iov_buffer_desc *iov, int iov_count)
|
|
{
|
|
unsigned int i;
|
|
|
|
for (i = 0; i < iov_count; i++) {
|
|
if (GSS_IOV_BUFFER_FLAGS(iov[i].type) & GSS_IOV_BUFFER_TYPE_FLAG_ALLOCATE){
|
|
void *ptr = malloc(iov[i].buffer.length);
|
|
if (ptr == NULL)
|
|
abort();
|
|
memcpy(ptr, iov[i].buffer.value, iov[i].buffer.length);
|
|
iov[i].buffer.value = ptr;
|
|
iov[i].type |= GSS_IOV_BUFFER_TYPE_FLAG_ALLOCATED;
|
|
}
|
|
}
|
|
return GSS_S_COMPLETE;
|
|
}
|
|
|
|
static OM_uint32
|
|
iov_map(OM_uint32 *minor_status,
|
|
const gss_iov_buffer_desc *iov,
|
|
int iov_count,
|
|
krb5_crypto_iov *data)
|
|
{
|
|
unsigned int i;
|
|
|
|
for (i = 0; i < iov_count; i++) {
|
|
switch(GSS_IOV_BUFFER_TYPE(iov[i].type)) {
|
|
case GSS_IOV_BUFFER_TYPE_EMPTY:
|
|
data[i].flags = KRB5_CRYPTO_TYPE_EMPTY;
|
|
break;
|
|
case GSS_IOV_BUFFER_TYPE_DATA:
|
|
data[i].flags = KRB5_CRYPTO_TYPE_DATA;
|
|
break;
|
|
case GSS_IOV_BUFFER_TYPE_SIGN_ONLY:
|
|
data[i].flags = KRB5_CRYPTO_TYPE_SIGN_ONLY;
|
|
break;
|
|
case GSS_IOV_BUFFER_TYPE_HEADER:
|
|
data[i].flags = KRB5_CRYPTO_TYPE_HEADER;
|
|
break;
|
|
case GSS_IOV_BUFFER_TYPE_TRAILER:
|
|
data[i].flags = KRB5_CRYPTO_TYPE_TRAILER;
|
|
break;
|
|
case GSS_IOV_BUFFER_TYPE_PADDING:
|
|
data[i].flags = KRB5_CRYPTO_TYPE_PADDING;
|
|
break;
|
|
case GSS_IOV_BUFFER_TYPE_STREAM:
|
|
abort();
|
|
break;
|
|
default:
|
|
*minor_status = EINVAL;
|
|
return GSS_S_FAILURE;
|
|
}
|
|
data[i].data.data = iov[i].buffer.value;
|
|
data[i].data.length = iov[i].buffer.length;
|
|
}
|
|
return GSS_S_COMPLETE;
|
|
}
|
|
|
|
OM_uint32 GSSAPI_LIB_FUNCTION
|
|
_gk_wrap_iov(OM_uint32 * minor_status,
|
|
gss_ctx_id_t context_handle,
|
|
int conf_req_flag,
|
|
gss_qop_t qop_req,
|
|
int * conf_state,
|
|
gss_iov_buffer_desc *iov,
|
|
int iov_count)
|
|
{
|
|
gsskrb5_ctx ctx = (gsskrb5_ctx) context_handle;
|
|
krb5_context context;
|
|
OM_uint32 major_status, junk;
|
|
krb5_crypto_iov *data;
|
|
krb5_error_code ret;
|
|
unsigned usage;
|
|
|
|
GSSAPI_KRB5_INIT (&context);
|
|
|
|
major_status = iov_allocate(minor_status, iov, iov_count);
|
|
if (major_status != GSS_S_COMPLETE)
|
|
return major_status;
|
|
|
|
data = calloc(iov_count, sizeof(data[0]));
|
|
if (data == NULL) {
|
|
gss_release_iov_buffer(&junk, iov, iov_count);
|
|
*minor_status = ENOMEM;
|
|
return GSS_S_FAILURE;
|
|
}
|
|
|
|
major_status = iov_map(minor_status, iov, iov_count, data);
|
|
if (major_status != GSS_S_COMPLETE) {
|
|
gss_release_iov_buffer(&junk, iov, iov_count);
|
|
free(data);
|
|
return major_status;
|
|
}
|
|
|
|
if (ctx->more_flags & LOCAL) {
|
|
usage = KRB5_KU_USAGE_ACCEPTOR_SIGN;
|
|
} else {
|
|
usage = KRB5_KU_USAGE_INITIATOR_SIGN;
|
|
}
|
|
|
|
ret = krb5_encrypt_iov_ivec(context, ctx->crypto, usage,
|
|
data, iov_count, NULL);
|
|
free(data);
|
|
if (ret) {
|
|
gss_release_iov_buffer(&junk, iov, iov_count);
|
|
*minor_status = ret;
|
|
return GSS_S_FAILURE;
|
|
}
|
|
|
|
*minor_status = 0;
|
|
return GSS_S_COMPLETE;
|
|
}
|
|
|
|
OM_uint32 GSSAPI_LIB_FUNCTION
|
|
_gk_unwrap_iov(OM_uint32 *minor_status,
|
|
gss_ctx_id_t context_handle,
|
|
int *conf_state,
|
|
gss_qop_t *qop_state,
|
|
gss_iov_buffer_desc *iov,
|
|
int iov_count)
|
|
{
|
|
gsskrb5_ctx ctx = (gsskrb5_ctx) context_handle;
|
|
krb5_context context;
|
|
krb5_error_code ret;
|
|
OM_uint32 major_status, junk;
|
|
krb5_crypto_iov *data;
|
|
unsigned usage;
|
|
|
|
GSSAPI_KRB5_INIT (&context);
|
|
|
|
major_status = iov_allocate(minor_status, iov, iov_count);
|
|
if (major_status != GSS_S_COMPLETE)
|
|
return major_status;
|
|
|
|
data = calloc(iov_count, sizeof(data[0]));
|
|
if (data == NULL) {
|
|
gss_release_iov_buffer(&junk, iov, iov_count);
|
|
*minor_status = ENOMEM;
|
|
return GSS_S_FAILURE;
|
|
}
|
|
|
|
major_status = iov_map(minor_status, iov, iov_count, data);
|
|
if (major_status != GSS_S_COMPLETE) {
|
|
gss_release_iov_buffer(&junk, iov, iov_count);
|
|
free(data);
|
|
return major_status;
|
|
}
|
|
|
|
if (ctx->more_flags & LOCAL) {
|
|
usage = KRB5_KU_USAGE_INITIATOR_SIGN;
|
|
} else {
|
|
usage = KRB5_KU_USAGE_ACCEPTOR_SIGN;
|
|
}
|
|
|
|
ret = krb5_decrypt_iov_ivec(context, ctx->crypto, usage,
|
|
data, iov_count, NULL);
|
|
free(data);
|
|
if (ret) {
|
|
*minor_status = ret;
|
|
gss_release_iov_buffer(&junk, iov, iov_count);
|
|
return GSS_S_FAILURE;
|
|
}
|
|
|
|
*minor_status = 0;
|
|
return GSS_S_COMPLETE;
|
|
}
|
|
|
|
OM_uint32 GSSAPI_LIB_FUNCTION
|
|
_gk_wrap_iov_length(OM_uint32 * minor_status,
|
|
gss_ctx_id_t context_handle,
|
|
int conf_req_flag,
|
|
gss_qop_t qop_req,
|
|
gss_iov_buffer_desc *iov,
|
|
int iov_count)
|
|
{
|
|
gsskrb5_ctx ctx = (gsskrb5_ctx) context_handle;
|
|
krb5_context context;
|
|
unsigned int i;
|
|
size_t size;
|
|
size_t *padding = NULL;
|
|
|
|
GSSAPI_KRB5_INIT (&context);
|
|
*minor_status = 0;
|
|
|
|
for (size = 0, i = 0; i < iov_count; i++) {
|
|
switch(iov[i].type) {
|
|
case GSS_IOV_BUFFER_TYPE_EMPTY:
|
|
break;
|
|
case GSS_IOV_BUFFER_TYPE_DATA:
|
|
size += iov[i].buffer.length;
|
|
break;
|
|
case GSS_IOV_BUFFER_TYPE_HEADER:
|
|
iov[i].buffer.length =
|
|
krb5_crypto_length(context, ctx->crypto, KRB5_CRYPTO_TYPE_HEADER);
|
|
size += iov[i].buffer.length;
|
|
break;
|
|
case GSS_IOV_BUFFER_TYPE_TRAILER:
|
|
iov[i].buffer.length =
|
|
krb5_crypto_length(context, ctx->crypto, KRB5_CRYPTO_TYPE_TRAILER);
|
|
size += iov[i].buffer.length;
|
|
break;
|
|
case GSS_IOV_BUFFER_TYPE_PADDING:
|
|
if (padding != NULL) {
|
|
*minor_status = 0;
|
|
return GSS_S_FAILURE;
|
|
}
|
|
padding = &iov[i].buffer.length;
|
|
break;
|
|
case GSS_IOV_BUFFER_TYPE_STREAM:
|
|
size += iov[i].buffer.length;
|
|
break;
|
|
case GSS_IOV_BUFFER_TYPE_SIGN_ONLY:
|
|
break;
|
|
default:
|
|
*minor_status = EINVAL;
|
|
return GSS_S_FAILURE;
|
|
}
|
|
}
|
|
if (padding) {
|
|
size_t pad = krb5_crypto_length(context, ctx->crypto,
|
|
KRB5_CRYPTO_TYPE_PADDING);
|
|
if (pad > 1) {
|
|
*padding = pad - (size % pad);
|
|
if (*padding == pad)
|
|
*padding = 0;
|
|
} else
|
|
*padding = 0;
|
|
}
|
|
|
|
return GSS_S_COMPLETE;
|
|
}
|