Sweden-Number/programs/reg/add.c

296 lines
8.0 KiB
C

/*
* Copyright 2016-2017, 2021 Hugh McMaster
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*/
#include <errno.h>
#include "reg.h"
static DWORD wchar_get_type(const WCHAR *type_name)
{
DWORD i;
if (!type_name)
return REG_SZ;
for (i = 0; i < ARRAY_SIZE(type_rels); i++)
{
if (!wcsicmp(type_rels[i].name, type_name))
return type_rels[i].type;
}
return ~0u;
}
/* hexchar_to_byte from programs/regedit/hexedit.c */
static inline BYTE hexchar_to_byte(WCHAR ch)
{
if (ch >= '0' && ch <= '9')
return ch - '0';
else if (ch >= 'a' && ch <= 'f')
return ch - 'a' + 10;
else if (ch >= 'A' && ch <= 'F')
return ch - 'A' + 10;
else
return -1;
}
static BOOL get_regdata(const WCHAR *data, DWORD reg_type, WCHAR separator,
BYTE **data_bytes, DWORD *size_bytes)
{
static const WCHAR empty;
*size_bytes = 0;
if (!data) data = &empty;
switch (reg_type)
{
case REG_NONE:
case REG_SZ:
case REG_EXPAND_SZ:
{
*size_bytes = (lstrlenW(data) + 1) * sizeof(WCHAR);
*data_bytes = malloc(*size_bytes);
lstrcpyW((WCHAR *)*data_bytes, data);
break;
}
case REG_DWORD:
/* case REG_DWORD_LITTLE_ENDIAN: */
case REG_DWORD_BIG_ENDIAN: /* Yes, this is correct! */
{
LPWSTR rest;
unsigned long val;
val = wcstoul(data, &rest, (towlower(data[1]) == 'x') ? 16 : 10);
if (*rest || data[0] == '-' || (val == ~0u && errno == ERANGE)) {
output_message(STRING_MISSING_NUMBER);
return FALSE;
}
*size_bytes = sizeof(DWORD);
*data_bytes = malloc(*size_bytes);
*(DWORD *)*data_bytes = val;
break;
}
case REG_BINARY:
{
BYTE hex0, hex1, *ptr;
int i = 0, destByteIndex = 0, datalen = lstrlenW(data);
if (!datalen) return TRUE;
*size_bytes = ((datalen + datalen % 2) / 2) * sizeof(BYTE);
*data_bytes = malloc(*size_bytes);
if (datalen % 2)
{
hex1 = hexchar_to_byte(data[i++]);
if (hex1 == 0xFF)
goto no_hex_data;
*data_bytes[destByteIndex++] = hex1;
}
ptr = *data_bytes;
for (; i + 1 < datalen; i += 2)
{
hex0 = hexchar_to_byte(data[i]);
hex1 = hexchar_to_byte(data[i + 1]);
if (hex0 == 0xFF || hex1 == 0xFF)
goto no_hex_data;
ptr[destByteIndex++] = (hex0 << 4) | hex1;
}
break;
no_hex_data:
free(*data_bytes);
*data_bytes = NULL;
output_message(STRING_MISSING_HEXDATA);
return FALSE;
}
case REG_MULTI_SZ:
{
int i, destindex, len = lstrlenW(data);
WCHAR *buffer = malloc((len + 2) * sizeof(WCHAR));
for (i = 0, destindex = 0; i < len; i++, destindex++)
{
if (!separator && data[i] == '\\' && data[i + 1] == '0')
{
buffer[destindex] = 0;
i++;
}
else if (data[i] == separator)
buffer[destindex] = 0;
else
buffer[destindex] = data[i];
if (destindex && !buffer[destindex - 1] && (!buffer[destindex] || destindex == 1))
{
free(buffer);
output_message(STRING_INVALID_STRING);
return FALSE;
}
}
buffer[destindex] = 0;
if (destindex && buffer[destindex - 1])
buffer[++destindex] = 0;
*size_bytes = (destindex + 1) * sizeof(WCHAR);
*data_bytes = (BYTE *)buffer;
break;
}
default:
output_message(STRING_UNHANDLED_TYPE, reg_type, data);
}
return TRUE;
}
static int run_add(HKEY root, WCHAR *path, WCHAR *value_name, BOOL value_empty,
WCHAR *type, WCHAR separator, WCHAR *data, BOOL force)
{
HKEY hkey;
DWORD dispos, data_type, data_size;
BYTE *reg_data = NULL;
LONG rc;
if (RegCreateKeyExW(root, path, 0, NULL, REG_OPTION_NON_VOLATILE,
KEY_READ|KEY_WRITE, NULL, &hkey, &dispos))
{
output_message(STRING_ACCESS_DENIED);
return 1;
}
if (!force && dispos == REG_OPENED_EXISTING_KEY)
{
if (RegQueryValueExW(hkey, value_name, NULL, NULL, NULL, NULL) == ERROR_SUCCESS)
{
if (!ask_confirm(STRING_OVERWRITE_VALUE, value_name))
{
RegCloseKey(hkey);
output_message(STRING_CANCELLED);
return 0;
}
}
}
data_type = wchar_get_type(type);
if (data_type == ~0u)
{
RegCloseKey(hkey);
output_message(STRING_UNSUPPORTED_TYPE, type);
return 1;
}
if ((data_type == REG_DWORD || data_type == REG_DWORD_BIG_ENDIAN) && !data)
{
RegCloseKey(hkey);
output_message(STRING_INVALID_CMDLINE);
return 1;
}
if (!get_regdata(data, data_type, separator, &reg_data, &data_size))
{
RegCloseKey(hkey);
return 1;
}
rc = RegSetValueExW(hkey, value_name, 0, data_type, reg_data, data_size);
free(reg_data);
RegCloseKey(hkey);
if (rc)
{
output_message(STRING_ACCESS_DENIED);
return 1;
}
output_message(STRING_SUCCESS);
return 0;
}
int reg_add(int argc, WCHAR *argvW[])
{
HKEY root;
WCHAR *path, *value_name = NULL, *type = NULL, *data = NULL, separator = '\0';
BOOL value_empty = FALSE, force = FALSE;
int i;
if (!parse_registry_key(argvW[2], &root, &path))
return 1;
for (i = 3; i < argc; i++)
{
WCHAR *str;
if (argvW[i][0] != '/' && argvW[i][0] != '-')
goto invalid;
str = &argvW[i][1];
if (!lstrcmpiW(str, L"ve"))
{
if (value_empty) goto invalid;
value_empty = TRUE;
continue;
}
else if (!lstrcmpiW(str, L"reg:32") || !lstrcmpiW(str, L"reg:64"))
continue;
else if (!str[0] || str[1])
goto invalid;
switch (towlower(*str))
{
case 'v':
if (value_name || !(value_name = argvW[++i]))
goto invalid;
break;
case 't':
if (type || !(type = argvW[++i]))
goto invalid;
break;
case 'd':
if (data || !(data = argvW[++i]))
goto invalid;
break;
case 's':
str = argvW[++i];
if (separator || !str || lstrlenW(str) != 1)
goto invalid;
separator = str[0];
break;
case 'f':
if (force) goto invalid;
force = TRUE;
break;
default:
goto invalid;
}
}
if (value_name && value_empty)
goto invalid;
return run_add(root, path, value_name, value_empty, type, separator, data, force);
invalid:
output_message(STRING_INVALID_SYNTAX);
output_message(STRING_FUNC_HELP, wcsupr(argvW[1]));
return 1;
}