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/*
Unix SMB/CIFS implementation.
routines for marshalling/unmarshalling special ntlmssp structures
Copyright (C) Guenther Deschner 2009
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "includes.h"
#include "../librpc/gen_ndr/ndr_ntlmssp.h"
_PUBLIC_ size_t ndr_ntlmssp_string_length(uint32_t negotiate_flags, const char *s)
{
if (!s) {
return 0;
}
if (negotiate_flags & NTLMSSP_NEGOTIATE_UNICODE) {
return strlen(s) * 2;
}
return strlen(s);
}
_PUBLIC_ uint32_t ndr_ntlmssp_negotiated_string_flags(uint32_t negotiate_flags)
{
uint32_t flags = LIBNDR_FLAG_STR_NOTERM |
LIBNDR_FLAG_STR_CHARLEN |
LIBNDR_FLAG_REMAINING;
if (!(negotiate_flags & NTLMSSP_NEGOTIATE_UNICODE)) {
flags |= LIBNDR_FLAG_STR_ASCII;
}
return flags;
}
_PUBLIC_ enum ndr_err_code ndr_push_AV_PAIR_LIST(struct ndr_push *ndr, int ndr_flags, const struct AV_PAIR_LIST *r)
{
uint32_t cntr_pair_0;
if (ndr_flags & NDR_SCALARS) {
NDR_CHECK(ndr_push_align(ndr, 4));
for (cntr_pair_0 = 0; cntr_pair_0 < r->count; cntr_pair_0++) {
NDR_CHECK(ndr_push_AV_PAIR(ndr, NDR_SCALARS, &r->pair[cntr_pair_0]));
}
}
if (ndr_flags & NDR_BUFFERS) {
for (cntr_pair_0 = 0; cntr_pair_0 < r->count; cntr_pair_0++) {
NDR_CHECK(ndr_push_AV_PAIR(ndr, NDR_BUFFERS, &r->pair[cntr_pair_0]));
}
}
return NDR_ERR_SUCCESS;
}
_PUBLIC_ enum ndr_err_code ndr_pull_AV_PAIR_LIST(struct ndr_pull *ndr, int ndr_flags, struct AV_PAIR_LIST *r)
{
uint32_t cntr_pair_0;
TALLOC_CTX *_mem_save_pair_0;
if (ndr_flags & NDR_SCALARS) {
uint32_t offset = 0;
NDR_CHECK(ndr_pull_align(ndr, 4));
r->count = 0;
if (ndr->data_size > 0) {
NDR_PULL_NEED_BYTES(ndr, 4);
}
while (offset + 4 <= ndr->data_size) {
uint16_t length;
uint16_t type;
type = SVAL(ndr->data + offset, 0);
if (type == MsvAvEOL) {
r->count++;
break;
}
length = SVAL(ndr->data + offset, 2);
offset += length + 4;
r->count++;
}
NDR_PULL_ALLOC_N(ndr, r->pair, r->count);
_mem_save_pair_0 = NDR_PULL_GET_MEM_CTX(ndr);
NDR_PULL_SET_MEM_CTX(ndr, r->pair, 0);
for (cntr_pair_0 = 0; cntr_pair_0 < r->count; cntr_pair_0++) {
NDR_CHECK(ndr_pull_AV_PAIR(ndr, NDR_SCALARS, &r->pair[cntr_pair_0]));
}
NDR_PULL_SET_MEM_CTX(ndr, _mem_save_pair_0, 0);
}
if (ndr_flags & NDR_BUFFERS) {
_mem_save_pair_0 = NDR_PULL_GET_MEM_CTX(ndr);
NDR_PULL_SET_MEM_CTX(ndr, r->pair, 0);
for (cntr_pair_0 = 0; cntr_pair_0 < r->count; cntr_pair_0++) {
NDR_CHECK(ndr_pull_AV_PAIR(ndr, NDR_BUFFERS, &r->pair[cntr_pair_0]));
}
NDR_PULL_SET_MEM_CTX(ndr, _mem_save_pair_0, 0);
}
return NDR_ERR_SUCCESS;
}
_PUBLIC_ void ndr_print_ntlmssp_nt_response(TALLOC_CTX *mem_ctx,
const DATA_BLOB *nt_response,
bool ntlmv2)
{
enum ndr_err_code ndr_err;
if (ntlmv2) {
struct NTLMv2_RESPONSE nt;
if (nt_response->length > 24) {
ndr_err = ndr_pull_struct_blob(nt_response, mem_ctx, &nt,
(ndr_pull_flags_fn_t)ndr_pull_NTLMv2_RESPONSE);
if (NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
NDR_PRINT_DEBUG(NTLMv2_RESPONSE, &nt);
}
}
} else {
struct NTLM_RESPONSE nt;
if (nt_response->length == 24) {
ndr_err = ndr_pull_struct_blob(nt_response, mem_ctx, &nt,
(ndr_pull_flags_fn_t)ndr_pull_NTLM_RESPONSE);
if (NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
NDR_PRINT_DEBUG(NTLM_RESPONSE, &nt);
}
}
}
}
_PUBLIC_ void ndr_print_ntlmssp_lm_response(TALLOC_CTX *mem_ctx,
const DATA_BLOB *lm_response,
bool ntlmv2)
{
enum ndr_err_code ndr_err;
if (ntlmv2) {
struct LMv2_RESPONSE lm;
if (lm_response->length == 24) {
ndr_err = ndr_pull_struct_blob(lm_response, mem_ctx, &lm,
(ndr_pull_flags_fn_t)ndr_pull_LMv2_RESPONSE);
if (NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
NDR_PRINT_DEBUG(LMv2_RESPONSE, &lm);
}
}
} else {
struct LM_RESPONSE lm;
if (lm_response->length == 24) {
ndr_err = ndr_pull_struct_blob(lm_response, mem_ctx, &lm,
(ndr_pull_flags_fn_t)ndr_pull_LM_RESPONSE);
if (NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
NDR_PRINT_DEBUG(LM_RESPONSE, &lm);
}
}
}
}
_PUBLIC_ void ndr_print_ntlmssp_Version(struct ndr_print *ndr, const char *name, const union ntlmssp_Version *r)
{
int level;
level = ndr_print_get_switch_value(ndr, r);
switch (level) {
case NTLMSSP_NEGOTIATE_VERSION:
ndr_print_ntlmssp_VERSION(ndr, name, &r->version);
break;
default:
break;
}
}
_PUBLIC_ struct AV_PAIR *ndr_ntlmssp_find_av(const struct AV_PAIR_LIST *av_list,
enum ntlmssp_AvId AvId)
{
struct AV_PAIR *res = NULL;
uint32_t i = 0;
for (i = 0; i < av_list->count; i++) {
if (av_list->pair[i].AvId != AvId) {
continue;
}
res = discard_const_p(struct AV_PAIR, &av_list->pair[i]);
break;
}
return res;
}
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