382 lines
8.7 KiB
C
382 lines
8.7 KiB
C
/*-
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* Copyright (c) 2005 Doug Rabson
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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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* 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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* 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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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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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* $FreeBSD: src/lib/libgssapi/gss_utils.c,v 1.1 2005/12/29 14:40:20 dfr Exp $
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*/
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#include "mech_locl.h"
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static OM_uint32
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_gss_copy_oid(OM_uint32 *minor_status,
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gss_const_OID from_oid,
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gss_OID to_oid)
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{
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size_t len = from_oid->length;
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*minor_status = 0;
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to_oid->elements = malloc(len);
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if (!to_oid->elements) {
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to_oid->length = 0;
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*minor_status = ENOMEM;
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return GSS_S_FAILURE;
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}
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to_oid->length = (OM_uint32)len;
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memcpy(to_oid->elements, from_oid->elements, len);
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return (GSS_S_COMPLETE);
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}
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OM_uint32
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_gss_free_oid(OM_uint32 *minor_status, gss_OID oid)
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{
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*minor_status = 0;
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if (oid->elements) {
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free(oid->elements);
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oid->elements = NULL;
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oid->length = 0;
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}
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return (GSS_S_COMPLETE);
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}
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struct _gss_interned_oid {
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HEIM_SLIST_ATOMIC_ENTRY(_gss_interned_oid) gio_link;
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gss_OID_desc gio_oid;
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};
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static HEIM_SLIST_ATOMIC_HEAD(_gss_interned_oid_list, _gss_interned_oid) interned_oids =
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HEIM_SLIST_HEAD_INITIALIZER(interned_oids);
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extern gss_OID _gss_ot_internal[];
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extern size_t _gss_ot_internal_count;
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static OM_uint32
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intern_oid_static(OM_uint32 *minor_status,
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gss_const_OID from_oid,
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gss_OID *to_oid)
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{
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size_t i;
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/* statically allocated OIDs */
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for (i = 0; i < _gss_ot_internal_count; i++) {
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if (gss_oid_equal(_gss_ot_internal[i], from_oid)) {
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*minor_status = 0;
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*to_oid = _gss_ot_internal[i];
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return GSS_S_COMPLETE;
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}
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}
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return GSS_S_CONTINUE_NEEDED;
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}
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OM_uint32
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_gss_intern_oid(OM_uint32 *minor_status,
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gss_const_OID from_oid,
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gss_OID *to_oid)
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{
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OM_uint32 major_status;
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struct _gss_interned_oid *iop;
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major_status = intern_oid_static(minor_status, from_oid, to_oid);
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if (major_status != GSS_S_CONTINUE_NEEDED)
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return major_status;
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HEIM_SLIST_ATOMIC_FOREACH(iop, &interned_oids, gio_link) {
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if (gss_oid_equal(&iop->gio_oid, from_oid)) {
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*minor_status = 0;
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*to_oid = &iop->gio_oid;
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return GSS_S_COMPLETE;
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}
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}
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iop = malloc(sizeof(*iop));
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if (iop == NULL) {
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*minor_status = ENOMEM;
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return GSS_S_FAILURE;
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}
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major_status = _gss_copy_oid(minor_status, from_oid, &iop->gio_oid);
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if (GSS_ERROR(major_status)) {
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free(iop);
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return major_status;
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}
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HEIM_SLIST_ATOMIC_INSERT_HEAD(&interned_oids, iop, gio_link);
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*minor_status = 0;
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*to_oid = &iop->gio_oid;
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return GSS_S_COMPLETE;
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}
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OM_uint32
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_gss_copy_buffer(OM_uint32 *minor_status,
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const gss_buffer_t from_buf, gss_buffer_t to_buf)
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{
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size_t len = from_buf->length;
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*minor_status = 0;
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to_buf->value = malloc(len);
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if (!to_buf->value) {
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*minor_status = ENOMEM;
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to_buf->length = 0;
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return GSS_S_FAILURE;
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}
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to_buf->length = len;
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memcpy(to_buf->value, from_buf->value, len);
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return (GSS_S_COMPLETE);
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}
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OM_uint32
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_gss_secure_release_buffer(OM_uint32 *minor_status,
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gss_buffer_t buffer)
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{
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if (buffer->value)
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memset_s(buffer->value, buffer->length, 0, buffer->length);
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return gss_release_buffer(minor_status, buffer);
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}
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OM_uint32
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_gss_secure_release_buffer_set(OM_uint32 *minor_status,
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gss_buffer_set_t *buffer_set)
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{
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size_t i;
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OM_uint32 minor;
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*minor_status = 0;
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if (*buffer_set == GSS_C_NO_BUFFER_SET)
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return GSS_S_COMPLETE;
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for (i = 0; i < (*buffer_set)->count; i++)
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_gss_secure_release_buffer(&minor, &((*buffer_set)->elements[i]));
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(*buffer_set)->count = 0;
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return gss_release_buffer_set(minor_status, buffer_set);
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}
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void
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_gss_mg_encode_le_uint64(uint64_t n, uint8_t *p)
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{
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p[0] = (n >> 0 ) & 0xFF;
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p[1] = (n >> 8 ) & 0xFF;
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p[2] = (n >> 16) & 0xFF;
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p[3] = (n >> 24) & 0xFF;
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p[4] = (n >> 32) & 0xFF;
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p[5] = (n >> 40) & 0xFF;
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p[6] = (n >> 48) & 0xFF;
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p[7] = (n >> 56) & 0xFF;
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}
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void
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_gss_mg_decode_le_uint64(const void *ptr, uint64_t *n)
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{
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const uint8_t *p = ptr;
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*n = ((uint64_t)p[0] << 0)
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| ((uint64_t)p[1] << 8)
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| ((uint64_t)p[2] << 16)
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| ((uint64_t)p[3] << 24)
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| ((uint64_t)p[4] << 32)
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| ((uint64_t)p[5] << 40)
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| ((uint64_t)p[6] << 48)
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| ((uint64_t)p[7] << 56);
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}
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void
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_gss_mg_encode_be_uint64(uint64_t n, uint8_t *p)
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{
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p[0] = (n >> 56) & 0xFF;
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p[1] = (n >> 48) & 0xFF;
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p[2] = (n >> 40) & 0xFF;
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p[3] = (n >> 32) & 0xFF;
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p[4] = (n >> 24) & 0xFF;
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p[5] = (n >> 16) & 0xFF;
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p[6] = (n >> 8 ) & 0xFF;
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p[7] = (n >> 0 ) & 0xFF;
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}
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void
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_gss_mg_decode_be_uint64(const void *ptr, uint64_t *n)
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{
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const uint8_t *p = ptr;
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*n = ((uint64_t)p[0] << 56)
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| ((uint64_t)p[1] << 48)
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| ((uint64_t)p[2] << 40)
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| ((uint64_t)p[3] << 32)
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| ((uint64_t)p[4] << 24)
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| ((uint64_t)p[5] << 16)
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| ((uint64_t)p[6] << 8)
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| ((uint64_t)p[7] << 0);
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}
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void
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_gss_mg_encode_le_uint32(uint32_t n, uint8_t *p)
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{
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p[0] = (n >> 0 ) & 0xFF;
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p[1] = (n >> 8 ) & 0xFF;
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p[2] = (n >> 16) & 0xFF;
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p[3] = (n >> 24) & 0xFF;
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}
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void
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_gss_mg_decode_le_uint32(const void *ptr, uint32_t *n)
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{
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const uint8_t *p = ptr;
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*n = ((uint32_t)p[0] << 0)
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| ((uint32_t)p[1] << 8)
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| ((uint32_t)p[2] << 16)
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| ((uint32_t)p[3] << 24);
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}
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void
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_gss_mg_encode_be_uint32(uint32_t n, uint8_t *p)
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{
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p[0] = (n >> 24) & 0xFF;
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p[1] = (n >> 16) & 0xFF;
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p[2] = (n >> 8 ) & 0xFF;
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p[3] = (n >> 0 ) & 0xFF;
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}
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void
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_gss_mg_decode_be_uint32(const void *ptr, uint32_t *n)
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{
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const uint8_t *p = ptr;
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*n = (p[0] << 24) | (p[1] << 16) | (p[2] << 8) | (p[3] << 0);
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}
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void
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_gss_mg_encode_le_uint16(uint16_t n, uint8_t *p)
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{
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p[0] = (n >> 0 ) & 0xFF;
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p[1] = (n >> 8 ) & 0xFF;
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}
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void
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_gss_mg_decode_le_uint16(const void *ptr, uint16_t *n)
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{
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const uint8_t *p = ptr;
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*n = (p[0] << 0) | (p[1] << 8);
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}
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void
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_gss_mg_encode_be_uint16(uint16_t n, uint8_t *p)
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{
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p[0] = (n >> 8) & 0xFF;
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p[1] = (n >> 0) & 0xFF;
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}
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void
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_gss_mg_decode_be_uint16(const void *ptr, uint16_t *n)
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{
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const uint8_t *p = ptr;
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*n = (p[0] << 24) | (p[1] << 16);
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}
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OM_uint32
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_gss_mg_ret_oid(OM_uint32 *minor,
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krb5_storage *sp,
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gss_OID *oidp)
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{
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krb5_data data;
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gss_OID_desc oid;
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OM_uint32 major;
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*minor = 0;
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*oidp = GSS_C_NO_OID;
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*minor = krb5_ret_data(sp, &data);
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if (*minor)
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return GSS_S_FAILURE;
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if (data.length) {
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oid.length = data.length;
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oid.elements = data.data;
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major = _gss_intern_oid(minor, &oid, oidp);
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} else
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major = GSS_S_COMPLETE;
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krb5_data_free(&data);
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return major;
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}
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OM_uint32
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_gss_mg_store_oid(OM_uint32 *minor,
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krb5_storage *sp,
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gss_const_OID oid)
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{
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krb5_data data;
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if (oid) {
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data.length = oid->length;
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data.data = oid->elements;
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} else
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krb5_data_zero(&data);
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*minor = krb5_store_data(sp, data);
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return *minor ? GSS_S_FAILURE : GSS_S_COMPLETE;
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}
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OM_uint32
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_gss_mg_ret_buffer(OM_uint32 *minor,
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krb5_storage *sp,
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gss_buffer_t buffer)
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{
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krb5_data data;
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_mg_buffer_zero(buffer);
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*minor = krb5_ret_data(sp, &data);
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if (*minor == 0) {
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if (data.length) {
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buffer->length = data.length;
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buffer->value = data.data;
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} else
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krb5_data_free(&data);
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}
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return *minor ? GSS_S_FAILURE : GSS_S_COMPLETE;
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}
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OM_uint32
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_gss_mg_store_buffer(OM_uint32 *minor,
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krb5_storage *sp,
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gss_const_buffer_t buffer)
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{
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krb5_data data;
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if (buffer) {
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data.length = buffer->length;
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data.data = buffer->value;
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} else
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krb5_data_zero(&data);
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*minor = krb5_store_data(sp, data);
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return *minor ? GSS_S_FAILURE : GSS_S_COMPLETE;
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}
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