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/*
Unix SMB/CIFS implementation.
routines for marshalling/unmarshalling basic types
Copyright (C) Andrew Tridgell 2003
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 2 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, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include "includes.h"
/*
parse a uint8
*/
NTSTATUS ndr_pull_uint8(struct ndr_pull *ndr, uint8 *v)
{
NDR_PULL_NEED_BYTES(ndr, 1);
*v = CVAL(ndr->data, ndr->offset);
ndr->offset += 1;
return NT_STATUS_OK;
}
/*
parse a uint16
*/
NTSTATUS ndr_pull_uint16(struct ndr_pull *ndr, uint16 *v)
{
NDR_PULL_ALIGN(ndr, 2);
NDR_PULL_NEED_BYTES(ndr, 2);
*v = SVAL(ndr->data, ndr->offset);
ndr->offset += 2;
return NT_STATUS_OK;
}
/*
parse a uint32
*/
NTSTATUS ndr_pull_uint32(struct ndr_pull *ndr, uint32 *v)
{
NDR_PULL_ALIGN(ndr, 4);
NDR_PULL_NEED_BYTES(ndr, 4);
*v = IVAL(ndr->data, ndr->offset);
ndr->offset += 4;
return NT_STATUS_OK;
}
/*
parse a HYPER_T
*/
NTSTATUS ndr_pull_HYPER_T(struct ndr_pull *ndr, HYPER_T *v)
{
NDR_PULL_ALIGN(ndr, 8);
NDR_PULL_NEED_BYTES(ndr, 8);
v->low = IVAL(ndr->data, ndr->offset);
v->high = IVAL(ndr->data, ndr->offset+4);
ndr->offset += 8;
return NT_STATUS_OK;
}
/*
pull a NTSTATUS
*/
NTSTATUS ndr_pull_NTSTATUS(struct ndr_pull *ndr, NTSTATUS *status)
{
uint32 v;
NDR_CHECK(ndr_pull_uint32(ndr, &v));
*status = NT_STATUS(v);
return NT_STATUS_OK;
}
/*
pull a WERROR
*/
NTSTATUS ndr_pull_WERROR(struct ndr_pull *ndr, WERROR *status)
{
uint32 v;
NDR_CHECK(ndr_pull_uint32(ndr, &v));
*status = W_ERROR(v);
return NT_STATUS_OK;
}
/*
parse a set of bytes
*/
NTSTATUS ndr_pull_bytes(struct ndr_pull *ndr, char *data, uint32 n)
{
NDR_PULL_NEED_BYTES(ndr, n);
memcpy(data, ndr->data + ndr->offset, n);
ndr->offset += n;
return NT_STATUS_OK;
}
/*
pull an array of uint8
*/
NTSTATUS ndr_pull_array_uint8(struct ndr_pull *ndr, char *data, uint32 n)
{
return ndr_pull_bytes(ndr, data, n);
}
/*
pull an array of uint16
*/
NTSTATUS ndr_pull_array_uint16(struct ndr_pull *ndr, uint16 *data, uint32 n)
{
uint32 i;
for (i=0;i<n;i++) {
NDR_CHECK(ndr_pull_uint16(ndr, &data[i]));
}
return NT_STATUS_OK;
}
/*
pull a const array of uint32
*/
NTSTATUS ndr_pull_array_uint32(struct ndr_pull *ndr, uint32 *data, uint32 n)
{
uint32 i;
for (i=0;i<n;i++) {
NDR_CHECK(ndr_pull_uint32(ndr, &data[i]));
}
return NT_STATUS_OK;
}
/*
parse a GUID
*/
NTSTATUS ndr_pull_GUID(struct ndr_pull *ndr, int ndr_flags, GUID *guid)
{
if (ndr_flags & NDR_SCALARS) {
return ndr_pull_bytes(ndr, guid->info, GUID_SIZE);
}
return NT_STATUS_OK;
}
/*
push a uint8
*/
NTSTATUS ndr_push_uint8(struct ndr_push *ndr, uint8 v)
{
NDR_PUSH_NEED_BYTES(ndr, 1);
SCVAL(ndr->data, ndr->offset, v);
ndr->offset += 1;
return NT_STATUS_OK;
}
/*
push a uint16
*/
NTSTATUS ndr_push_uint16(struct ndr_push *ndr, uint16 v)
{
NDR_PUSH_ALIGN(ndr, 2);
NDR_PUSH_NEED_BYTES(ndr, 2);
SSVAL(ndr->data, ndr->offset, v);
ndr->offset += 2;
return NT_STATUS_OK;
}
/*
push a uint32
*/
NTSTATUS ndr_push_uint32(struct ndr_push *ndr, uint32 v)
{
NDR_PUSH_ALIGN(ndr, 4);
NDR_PUSH_NEED_BYTES(ndr, 4);
SIVAL(ndr->data, ndr->offset, v);
ndr->offset += 4;
return NT_STATUS_OK;
}
/*
push a HYPER_T
*/
NTSTATUS ndr_push_HYPER_T(struct ndr_push *ndr, HYPER_T v)
{
NDR_PUSH_ALIGN(ndr, 8);
NDR_PUSH_NEED_BYTES(ndr, 8);
SIVAL(ndr->data, ndr->offset, v.low);
SIVAL(ndr->data, ndr->offset+4, v.high);
ndr->offset += 8;
return NT_STATUS_OK;
}
NTSTATUS ndr_push_align(struct ndr_push *ndr, size_t size)
{
NDR_PUSH_ALIGN(ndr, size);
return NT_STATUS_OK;
}
NTSTATUS ndr_pull_align(struct ndr_pull *ndr, size_t size)
{
NDR_PULL_ALIGN(ndr, size);
return NT_STATUS_OK;
}
/*
push some bytes
*/
NTSTATUS ndr_push_bytes(struct ndr_push *ndr, const char *data, uint32 n)
{
NDR_PUSH_NEED_BYTES(ndr, n);
memcpy(ndr->data + ndr->offset, data, n);
ndr->offset += n;
return NT_STATUS_OK;
}
/*
push an array of uint8
*/
NTSTATUS ndr_push_array_uint8(struct ndr_push *ndr, const char *data, uint32 n)
{
return ndr_push_bytes(ndr, data, n);
}
/*
push an array of uint32
*/
NTSTATUS ndr_push_array_uint32(struct ndr_push *ndr, const uint32 *data, uint32 n)
{
int i;
for (i=0;i<n;i++) {
NDR_CHECK(ndr_push_uint32(ndr, data[i]));
}
return NT_STATUS_OK;
}
/*
save the current position
*/
void ndr_push_save(struct ndr_push *ndr, struct ndr_push_save *save)
{
save->offset = ndr->offset;
}
/*
restore the position
*/
void ndr_push_restore(struct ndr_push *ndr, struct ndr_push_save *save)
{
ndr->offset = save->offset;
}
/*
this is used when a packet has a 4 byte length field. We remember the start position
and come back to it later to fill in the size
*/
NTSTATUS ndr_push_length4_start(struct ndr_push *ndr, struct ndr_push_save *save)
{
NDR_PUSH_ALIGN(ndr, 4);
ndr_push_save(ndr, save);
return ndr_push_uint32(ndr, 0);
}
NTSTATUS ndr_push_length4_end(struct ndr_push *ndr, struct ndr_push_save *save)
{
struct ndr_push_save save2;
ndr_push_save(ndr, &save2);
ndr_push_restore(ndr, save);
NDR_CHECK(ndr_push_uint32(ndr, save2.offset - ndr->offset));
ndr_push_restore(ndr, &save2);
return NT_STATUS_OK;
}
/*
push a 1 if a pointer is non-NULL, otherwise 0
*/
NTSTATUS ndr_push_ptr(struct ndr_push *ndr, const void *p)
{
return ndr_push_uint32(ndr, p?0xaabbccdd:0);
}
/*
push a comformant, variable ucs2 string onto the wire from a C string
*/
NTSTATUS ndr_push_unistr(struct ndr_push *ndr, const char *s)
{
char *ws;
ssize_t len;
len = push_ucs2_talloc(ndr->mem_ctx, (smb_ucs2_t **)&ws, s);
if (len == -1) {
return NT_STATUS_INVALID_PARAMETER;
}
NDR_CHECK(ndr_push_uint32(ndr, len/2));
NDR_CHECK(ndr_push_uint32(ndr, 0));
NDR_CHECK(ndr_push_uint32(ndr, len/2));
NDR_CHECK(ndr_push_bytes(ndr, ws, len));
return NT_STATUS_OK;
}
/*
push a comformant, variable ucs2 string onto the wire from a C string
don't send the null
*/
NTSTATUS ndr_push_unistr_noterm(struct ndr_push *ndr, const char *s)
{
char *ws;
ssize_t len;
len = push_ucs2_talloc(ndr->mem_ctx, (smb_ucs2_t **)&ws, s);
if (len == -1) {
return NT_STATUS_INVALID_PARAMETER;
}
NDR_CHECK(ndr_push_uint32(ndr, len/2 - 1));
NDR_CHECK(ndr_push_uint32(ndr, 0));
NDR_CHECK(ndr_push_uint32(ndr, len/2 - 1));
NDR_CHECK(ndr_push_bytes(ndr, ws, len - 2));
return NT_STATUS_OK;
}
/*
pull a comformant, variable ucs2 string from the wire into a C string
*/
NTSTATUS ndr_pull_unistr(struct ndr_pull *ndr, const char **s)
{
char *ws, *as=NULL;
uint32 len1, ofs, len2;
NDR_CHECK(ndr_pull_uint32(ndr, &len1));
NDR_CHECK(ndr_pull_uint32(ndr, &ofs));
NDR_CHECK(ndr_pull_uint32(ndr, &len2));
if (len2 > len1) {
return NT_STATUS_INVALID_PARAMETER;
}
NDR_ALLOC_N(ndr, ws, (len1+1)*2);
NDR_CHECK(ndr_pull_bytes(ndr, ws, len2*2));
SSVAL(ws, len1*2, 0);
SSVAL(ws, len2*2, 0);
pull_ucs2_talloc(ndr->mem_ctx, &as, (const smb_ucs2_t *)ws);
if (!as) {
return NT_STATUS_INVALID_PARAMETER;
}
*s = as;
return NT_STATUS_OK;
}
/*
pull a comformant, variable ucs2 string from the wire into a C string
*/
NTSTATUS ndr_pull_unistr_noterm(struct ndr_pull *ndr, const char **s)
{
return ndr_pull_unistr(ndr, s);
}
/*
push a 4 byte offset pointer, remembering where we are so we can later fill
in the correct value
*/
NTSTATUS ndr_push_offset(struct ndr_push *ndr, struct ndr_push_save *ofs)
{
NDR_PUSH_ALIGN(ndr, 4);
ndr_push_save(ndr, ofs);
return ndr_push_uint32(ndr, 0);
}
/*
fill in the correct offset in a saved offset pointer
the offset is taken relative to 'save'
*/
NTSTATUS ndr_push_offset_ptr(struct ndr_push *ndr,
struct ndr_push_save *ofs,
struct ndr_push_save *save)
{
struct ndr_push_save save2;
ndr_push_save(ndr, &save2);
ndr_push_restore(ndr, ofs);
NDR_CHECK(ndr_push_uint32(ndr, save2.offset - save->offset));
ndr_push_restore(ndr, &save2);
return NT_STATUS_OK;
}
/*
push a GUID
*/
NTSTATUS ndr_push_GUID(struct ndr_push *ndr, int ndr_flags, GUID *guid)
{
if (ndr_flags & NDR_SCALARS) {
return ndr_push_bytes(ndr, guid->info, GUID_SIZE);
}
return NT_STATUS_OK;
}
/*
push a NTTIME
*/
NTSTATUS ndr_push_NTTIME(struct ndr_push *ndr, NTTIME t)
{
NDR_CHECK(ndr_push_uint32(ndr, t.low));
NDR_CHECK(ndr_push_uint32(ndr, t.high));
return NT_STATUS_OK;
}
/*
pull a NTTIME
*/
NTSTATUS ndr_pull_NTTIME(struct ndr_pull *ndr, NTTIME *t)
{
NDR_CHECK(ndr_pull_uint32(ndr, &t->low));
NDR_CHECK(ndr_pull_uint32(ndr, &t->high));
return NT_STATUS_OK;
}
void ndr_print_struct(struct ndr_print *ndr, const char *name, const char *type)
{
ndr->print(ndr, "%s: struct %s", name, type);
}
void ndr_print_uint8(struct ndr_print *ndr, const char *name, uint8 v)
{
ndr->print(ndr, "%-25s: 0x%02x (%u)", name, v, v);
}
void ndr_print_uint16(struct ndr_print *ndr, const char *name, uint16 v)
{
ndr->print(ndr, "%-25s: 0x%04x (%u)", name, v, v);
}
void ndr_print_uint32(struct ndr_print *ndr, const char *name, uint32 v)
{
ndr->print(ndr, "%-25s: 0x%08x (%u)", name, v, v);
}
void ndr_print_HYPER_T(struct ndr_print *ndr, const char *name, HYPER_T v)
{
ndr->print(ndr, "%-25s: 0x%08x%08x", name, v.high, v.low);
}
void ndr_print_ptr(struct ndr_print *ndr, const char *name, const void *p)
{
if (p) {
ndr->print(ndr, "%-25s: *", name);
} else {
ndr->print(ndr, "%-25s: NULL", name);
}
}
void ndr_print_unistr(struct ndr_print *ndr, const char *name, const char *s)
{
if (s) {
ndr->print(ndr, "%-25s: '%s'", name, s);
} else {
ndr->print(ndr, "%-25s: NULL", name);
}
}
void ndr_print_unistr_noterm(struct ndr_print *ndr, const char *name, const char *s)
{
ndr_print_unistr(ndr, name, s);
}
void ndr_print_NTTIME(struct ndr_print *ndr, const char *name, NTTIME t)
{
ndr->print(ndr, "%-25s: %s", name, nt_time_string(ndr->mem_ctx, &t));
}
void ndr_print_union(struct ndr_print *ndr, const char *name, uint16 level, const char *type)
{
ndr->print(ndr, "%-25s: union %s(case %u)", name, type, level);
}
void ndr_print_bad_level(struct ndr_print *ndr, const char *name, uint16 level)
{
ndr->print(ndr, "UNKNOWN LEVEL %u", level);
}
void ndr_print_array_uint32(struct ndr_print *ndr, const char *name,
const uint32 *data, uint32 count)
{
int i;
ndr->print(ndr, "%s: ARRAY(%d)", name, count);
ndr->depth++;
for (i=0;i<count;i++) {
char *idx=NULL;
asprintf(&idx, "[%d]", i);
if (idx) {
ndr_print_uint32(ndr, idx, data[i]);
free(idx);
}
}
ndr->depth--;
}
void ndr_print_array_uint8(struct ndr_print *ndr, const char *name,
const uint8 *data, uint32 count)
{
int i;
ndr->print(ndr, "%s: ARRAY(%d)", name, count);
ndr->depth++;
for (i=0;i<count;i++) {
char *idx=NULL;
asprintf(&idx, "[%d]", i);
if (idx) {
ndr_print_uint8(ndr, idx, data[i]);
free(idx);
}
}
ndr->depth--;
}
void ndr_print_GUID(struct ndr_print *ndr, const char *name, const struct GUID *guid)
{
ndr->print(ndr, "%-25s: %08x-%04x-%04x-%02x%02x-%02x%02x%02x%02x%02x%02x",
name,
IVAL(guid->info, 0), SVAL(guid->info, 4), SVAL(guid->info, 6),
guid->info[8], guid->info[9],
guid->info[10], guid->info[11], guid->info[12], guid->info[13],
guid->info[14], guid->info[15]);
}
/*
pull a null terminated UCS2 string
*/
NTSTATUS ndr_pull_nstring(struct ndr_pull *ndr, int ndr_flags, const char **s)
{
int ret;
if (!(ndr_flags & NDR_SCALARS)) {
return NT_STATUS_OK;
}
ret = convert_string_talloc(ndr->mem_ctx, CH_UCS2, CH_UNIX,
ndr->data+ndr->offset,
ndr->data_size - ndr->offset,
(const void **)s);
if (ret == -1) {
return ndr_pull_error(ndr, NDR_ERR_CHARCNV, "Bad character conversion");
}
ndr->offset += ret;
return NT_STATUS_OK;
}
/*
push a spoolss style "relative string"
*/
NTSTATUS ndr_push_nstring(struct ndr_push *ndr, int ndr_flags, const char **s)
{
uint32 len;
int ret;
if (!(ndr_flags & NDR_SCALARS)) {
return NT_STATUS_OK;
}
len = 2*(strlen_m(*s)+1);
NDR_PUSH_NEED_BYTES(ndr, len);
ret = push_ucs2(NULL, ndr->data + ndr->offset, *s, len, STR_TERMINATE);
if (ret == -1) {
return ndr_push_error(ndr, NDR_ERR_CHARCNV, "Bad string conversion");
}
ndr->offset += len;
return NT_STATUS_OK;
}
void ndr_print_nstring(struct ndr_print *ndr, const char *name, const char **s)
{
ndr_print_unistr(ndr, name, *s);
}
/*
push a DATA_BLOB onto the wire.
*/
NTSTATUS ndr_push_DATA_BLOB(struct ndr_push *ndr, DATA_BLOB blob)
{
NDR_CHECK(ndr_push_uint32(ndr, blob.length));
NDR_CHECK(ndr_push_bytes(ndr, blob.data, blob.length));
return NT_STATUS_OK;
}
/*
pull a DATA_BLOB from the wire.
*/
NTSTATUS ndr_pull_DATA_BLOB(struct ndr_pull *ndr, DATA_BLOB *blob)
{
uint32 length;
NDR_CHECK(ndr_pull_uint32(ndr, &length));
NDR_PULL_NEED_BYTES(ndr, length);
*blob = data_blob_talloc(ndr->mem_ctx, ndr->data+ndr->offset, length);
ndr->offset += length;
return NT_STATUS_OK;
}
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