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/*
* Unix SMB/CIFS implementation.
* Registry helper routines
* Copyright (C) Volker Lendecke 2006
*
* 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"
#undef DBGC_CLASS
#define DBGC_CLASS DBGC_REGISTRY
WERROR registry_pull_value(TALLOC_CTX *mem_ctx,
struct registry_value **pvalue,
enum winreg_Type type, uint8 *data,
uint32 size, uint32 length)
{
struct registry_value *value;
WERROR err;
if (!(value = TALLOC_ZERO_P(mem_ctx, struct registry_value))) {
return WERR_NOMEM;
}
value->type = type;
switch (type) {
case REG_DWORD:
if ((size != 4) || (length != 4)) {
err = WERR_INVALID_PARAM;
goto error;
}
value->v.dword = IVAL(data, 0);
break;
case REG_SZ:
case REG_EXPAND_SZ:
{
/*
* Make sure we get a NULL terminated string for
* convert_string_talloc().
*/
smb_ucs2_t *tmp;
if (length == 1) {
/* win2k regedit gives us a string of 1 byte when
* creating a new value of type REG_SZ. this workaround
* replaces the input by using the same string as
* winxp delivers. */
length = 2;
if (!(tmp = SMB_MALLOC_ARRAY(smb_ucs2_t, 2))) {
err = WERR_NOMEM;
goto error;
}
tmp[0] = 0;
tmp[1] = 0;
DEBUG(10, ("got REG_SZ value of length 1 - workaround "
"activated.\n"));
}
else if ((length % 2) != 0) {
err = WERR_INVALID_PARAM;
goto error;
}
else {
uint32 num_ucs2 = length / 2;
if (!(tmp = SMB_MALLOC_ARRAY(smb_ucs2_t, num_ucs2+1))) {
err = WERR_NOMEM;
goto error;
}
memcpy((void *)tmp, (const void *)data, length);
tmp[num_ucs2] = 0;
}
if (length + 2 < length) {
/* Integer wrap. */
SAFE_FREE(tmp);
err = WERR_INVALID_PARAM;
goto error;
}
value->v.sz.len = convert_string_talloc(
value, CH_UTF16LE, CH_UNIX, tmp, length+2,
&value->v.sz.str, False);
SAFE_FREE(tmp);
if (value->v.sz.len == (size_t)-1) {
err = WERR_INVALID_PARAM;
goto error;
}
break;
}
case REG_MULTI_SZ:
err = reg_pull_multi_sz(value, (void *)data, length,
&value->v.multi_sz.num_strings,
&value->v.multi_sz.strings);
if (!(W_ERROR_IS_OK(err))) {
goto error;
}
break;
case REG_BINARY:
value->v.binary = data_blob_talloc(mem_ctx, data, length);
break;
default:
err = WERR_INVALID_PARAM;
goto error;
}
*pvalue = value;
return WERR_OK;
error:
TALLOC_FREE(value);
return err;
}
WERROR registry_push_value(TALLOC_CTX *mem_ctx,
const struct registry_value *value,
DATA_BLOB *presult)
{
switch (value->type) {
case REG_DWORD: {
char buf[4];
SIVAL(buf, 0, value->v.dword);
*presult = data_blob_talloc(mem_ctx, (void *)buf, 4);
if (presult->data == NULL) {
return WERR_NOMEM;
}
break;
}
case REG_SZ:
case REG_EXPAND_SZ: {
presult->length = convert_string_talloc(
mem_ctx, CH_UNIX, CH_UTF16LE, value->v.sz.str,
MIN(value->v.sz.len, strlen(value->v.sz.str)+1),
(void *)&(presult->data), False);
if (presult->length == (size_t)-1) {
return WERR_NOMEM;
}
break;
}
case REG_BINARY:
*presult = data_blob_talloc(mem_ctx,
value->v.binary.data,
value->v.binary.length);
break;
default:
return WERR_INVALID_PARAM;
}
return WERR_OK;
}
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