Sweden-Number/programs/reg/copy.c

252 lines
6.4 KiB
C

/*
* Copyright 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 <stdio.h>
#include "reg.h"
struct key {
HKEY root; /* system key */
WCHAR *subkey; /* relative path to subkey */
HKEY hkey; /* handle to opened or created key */
WCHAR *path; /* full path to subkey */
};
enum operation {
COPY_NO,
COPY_YES,
COPY_ALL
};
static void output_error(LONG rc)
{
if (rc == ERROR_FILE_NOT_FOUND)
output_message(STRING_KEY_NONEXIST);
else
output_message(STRING_ACCESS_DENIED);
}
static enum operation ask_overwrite_value(WCHAR *path, WCHAR *value)
{
HMODULE hmod;
static WCHAR Ybuffer[4];
static WCHAR Nbuffer[4];
static WCHAR Abuffer[4];
static WCHAR defval[32];
WCHAR answer[MAX_PATH];
WCHAR *str;
DWORD count;
hmod = GetModuleHandleW(NULL);
LoadStringW(hmod, STRING_YES, Ybuffer, ARRAY_SIZE(Ybuffer));
LoadStringW(hmod, STRING_NO, Nbuffer, ARRAY_SIZE(Nbuffer));
LoadStringW(hmod, STRING_ALL, Abuffer, ARRAY_SIZE(Abuffer));
LoadStringW(hmod, STRING_DEFAULT_VALUE, defval, ARRAY_SIZE(defval));
str = (value && *value) ? value : defval;
while (1)
{
output_message(STRING_COPY_CONFIRM, path, str);
output_message(STRING_YESNOALL);
ReadConsoleW(GetStdHandle(STD_INPUT_HANDLE), answer, ARRAY_SIZE(answer), &count, NULL);
*answer = towupper(*answer);
if (*answer == *Ybuffer)
return COPY_YES;
if (*answer == *Nbuffer)
return COPY_NO;
if (*answer == *Abuffer)
return COPY_ALL;
}
}
static int run_copy(struct key *src, struct key *dest, BOOL recurse, BOOL force)
{
LONG rc;
DWORD max_subkey_len;
DWORD max_name_len, name_len;
DWORD max_data_size, data_size;
DWORD type, dispos, i;
WCHAR *name = NULL;
BYTE *data = NULL;
if ((rc = RegOpenKeyExW(src->root, src->subkey, 0, KEY_READ, &src->hkey)))
{
output_error(rc);
return 1;
}
if ((rc = RegCreateKeyExW(dest->root, dest->subkey, 0, NULL, REG_OPTION_NON_VOLATILE,
KEY_READ|KEY_WRITE, NULL, &dest->hkey, &dispos)))
{
RegCloseKey(src->hkey);
output_error(rc);
return 1;
}
rc = RegQueryInfoKeyW(src->hkey, NULL, NULL, NULL, NULL, &max_subkey_len, NULL,
NULL, &max_name_len, &max_data_size, NULL, NULL);
if (rc) goto cleanup;
max_name_len = max(max_subkey_len, max_name_len) + 1;
if (!(name = malloc(max_name_len * sizeof(WCHAR))))
{
rc = ERROR_NOT_ENOUGH_MEMORY;
goto cleanup;
}
if (!(data = malloc(max_data_size)))
{
rc = ERROR_NOT_ENOUGH_MEMORY;
goto cleanup;
}
for (i = 0; ; i++)
{
name_len = max_name_len;
data_size = max_data_size;
rc = RegEnumValueW(src->hkey, i, name, &name_len, NULL, &type, data, &data_size);
if (rc == ERROR_NO_MORE_ITEMS) break;
if (rc) goto cleanup;
if (!force && dispos == REG_OPENED_EXISTING_KEY)
{
if (!RegQueryValueExW(dest->hkey, name, NULL, NULL, NULL, NULL))
{
enum operation op;
op = ask_overwrite_value(src->path, name);
if (op == COPY_NO) continue;
if (op == COPY_ALL) force = TRUE;
}
}
if ((rc = RegSetValueExW(dest->hkey, name, 0, type, data, data_size)))
{
output_error(rc);
goto cleanup;
}
}
for (i = 0; recurse; i++)
{
struct key subkey_src, subkey_dest;
size_t path_len;
name_len = max_name_len;
rc = RegEnumKeyExW(src->hkey, i, name, &name_len, NULL, NULL, NULL, NULL);
if (rc) break;
subkey_src.root = src->hkey;
subkey_src.subkey = name;
subkey_dest.root = dest->hkey;
subkey_dest.subkey = name;
path_len = lstrlenW(src->path) + name_len + 2;
if (!(subkey_src.path = malloc(path_len * sizeof(WCHAR))))
{
rc = ERROR_NOT_ENOUGH_MEMORY;
goto cleanup;
}
swprintf(subkey_src.path, path_len, L"%s\\%s", src->path, name);
rc = run_copy(&subkey_src, &subkey_dest, TRUE, force);
free(subkey_src.path);
if (rc) goto cleanup;
}
cleanup:
free(name);
free(data);
RegCloseKey(src->hkey);
RegCloseKey(dest->hkey);
return rc != ERROR_NO_MORE_ITEMS;
}
int reg_copy(int argc, WCHAR *argvW[])
{
struct key src, dest;
BOOL recurse = FALSE, force = FALSE;
int i;
if (argc == 3)
goto invalid;
if (!parse_registry_key(argvW[2], &src.root, &src.subkey))
return 1;
if (!parse_registry_key(argvW[3], &dest.root, &dest.subkey))
return 1;
for (i = 4; i < argc; i++)
{
WCHAR *str;
if (argvW[i][0] != '/' && argvW[i][0] != '-')
goto invalid;
str = &argvW[i][1];
if (!lstrcmpiW(str, L"reg:32") || !lstrcmpiW(str, L"reg:64"))
continue;
else if (!str[0] || str[1])
goto invalid;
switch (towlower(*str))
{
case 's':
if (recurse) goto invalid;
recurse = TRUE;
break;
case 'f':
if (force) goto invalid;
force = TRUE;
break;
default:
goto invalid;
}
}
if (src.root == dest.root && !lstrcmpiW(src.subkey, dest.subkey))
{
output_message(STRING_COPY_SRC_DEST_SAME);
return 1;
}
src.path = src.subkey;
return run_copy(&src, &dest, recurse, force);
invalid:
output_message(STRING_INVALID_SYNTAX);
output_message(STRING_FUNC_HELP, wcsupr(argvW[1]));
return 1;
}