/*
* Copyright (c) 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017,
* 2018, 2019, 2020
* Jonathan Schleifer <js@nil.im>
*
* All rights reserved.
*
* This file is part of ObjFW. It may be distributed under the terms of the
* Q Public License 1.0, which can be found in the file LICENSE.QPL included in
* the packaging of this file.
*
* Alternatively, it may be distributed under the terms of the GNU General
* Public License, either version 2 or 3, which can be found in the file
* LICENSE.GPLv2 or LICENSE.GPLv3 respectively included in the packaging of this
* file.
*/
#include "config.h"
#import "OFWindowsRegistryKey.h"
#import "OFData.h"
#include <windows.h>
#import "OFCreateWindowsRegistryKeyFailedException.h"
#import "OFDeleteWindowsRegistryKeyFailedException.h"
#import "OFDeleteWindowsRegistryValueFailedException.h"
#import "OFGetWindowsRegistryValueFailedException.h"
#import "OFInvalidFormatException.h"
#import "OFOpenWindowsRegistryKeyFailedException.h"
#import "OFOutOfRangeException.h"
#import "OFSetWindowsRegistryValueFailedException.h"
@interface OFWindowsRegistryKey ()
- (instancetype)of_initWithHKey: (HKEY)hKey
close: (bool)close;
@end
@implementation OFWindowsRegistryKey
+ (instancetype)classesRootKey
{
return [[[self alloc] of_initWithHKey: HKEY_CLASSES_ROOT
close: false] autorelease];
}
+ (instancetype)currentConfigKey
{
return [[[self alloc] of_initWithHKey: HKEY_CURRENT_CONFIG
close: false] autorelease];
}
+ (instancetype)currentUserKey
{
return [[[self alloc] of_initWithHKey: HKEY_CURRENT_USER
close: false] autorelease];
}
+ (instancetype)localMachineKey
{
return [[[self alloc] of_initWithHKey: HKEY_LOCAL_MACHINE
close: false] autorelease];
}
+ (instancetype)usersKey
{
return [[[self alloc] of_initWithHKey: HKEY_USERS
close: false] autorelease];
}
- (instancetype)of_initWithHKey: (HKEY)hKey
close: (bool)close
{
self = [super init];
_hKey = hKey;
_close = close;
return self;
}
- (instancetype)init
{
OF_INVALID_INIT_METHOD
}
- (void)dealloc
{
if (_close)
RegCloseKey(_hKey);
[super dealloc];
}
- (OFWindowsRegistryKey *)openSubkeyAtPath: (OFString *)path
securityAndAccessRights: (REGSAM)securityAndAccessRights
{
return [self openSubkeyAtPath: path
options: 0
securityAndAccessRights: securityAndAccessRights];
}
- (OFWindowsRegistryKey *)openSubkeyAtPath: (OFString *)path
options: (DWORD)options
securityAndAccessRights: (REGSAM)securityAndAccessRights
{
void *pool = objc_autoreleasePoolPush();
LSTATUS status;
HKEY subKey;
if ((status = RegOpenKeyExW(_hKey, path.UTF16String, options,
securityAndAccessRights, &subKey)) != ERROR_SUCCESS) {
if (status == ERROR_FILE_NOT_FOUND) {
objc_autoreleasePoolPop(pool);
return nil;
}
@throw [OFOpenWindowsRegistryKeyFailedException
exceptionWithRegistryKey: self
path: path
options: options
securityAndAccessRights: securityAndAccessRights
status: status];
}
objc_autoreleasePoolPop(pool);
return [[[OFWindowsRegistryKey alloc] of_initWithHKey: subKey
close: true]
autorelease];
}
- (OFWindowsRegistryKey *)createSubkeyAtPath: (OFString *)path
securityAndAccessRights: (REGSAM)securityAndAccessRights
{
return [self createSubkeyAtPath: path
options: 0
securityAndAccessRights: securityAndAccessRights
securityAttributes: NULL
disposition: NULL];
}
- (OFWindowsRegistryKey *)
createSubkeyAtPath: (OFString *)path
options: (DWORD)options
securityAndAccessRights: (REGSAM)securityAndAccessRights
securityAttributes: (LPSECURITY_ATTRIBUTES)securityAttributes
disposition: (LPDWORD)disposition
{
void *pool = objc_autoreleasePoolPush();
LSTATUS status;
HKEY subKey;
if ((status = RegCreateKeyExW(_hKey, path.UTF16String, 0,
NULL, options, securityAndAccessRights, securityAttributes,
&subKey, NULL)) != ERROR_SUCCESS)
@throw [OFCreateWindowsRegistryKeyFailedException
exceptionWithRegistryKey: self
path: path
options: options
securityAndAccessRights: securityAndAccessRights
securityAttributes: securityAttributes
status: status];
objc_autoreleasePoolPop(pool);
return [[[OFWindowsRegistryKey alloc] of_initWithHKey: subKey
close: true]
autorelease];
}
- (OFData *)dataForValue: (OFString *)value
subkeyPath: (OFString *)subkeyPath
flags: (DWORD)flags
type: (LPDWORD)type
{
void *pool = objc_autoreleasePoolPush();
char stackBuffer[256], *buffer = stackBuffer;
DWORD length = sizeof(stackBuffer);
OFMutableData *ret = nil;
LSTATUS status;
for (;;) {
status = RegGetValueW(_hKey, subkeyPath.UTF16String,
value.UTF16String, flags, type, buffer, &length);
switch (status) {
case ERROR_SUCCESS:
if (buffer == stackBuffer) {
objc_autoreleasePoolPop(pool);
return [OFData dataWithItems: buffer
count: length];
} else {
[ret makeImmutable];
[ret retain];
objc_autoreleasePoolPop(pool);
return [ret autorelease];
}
case ERROR_FILE_NOT_FOUND:
objc_autoreleasePoolPop(pool);
return nil;
case ERROR_MORE_DATA:
objc_autoreleasePoolPop(pool);
pool = objc_autoreleasePoolPush();
ret = [OFMutableData dataWithCapacity: length];
[ret increaseCountBy: length];
buffer = ret.mutableItems;
continue;
default:
@throw [OFGetWindowsRegistryValueFailedException
exceptionWithRegistryKey: self
value: value
subkeyPath: subkeyPath
flags: flags
status: status];
}
}
}
- (void)setData: (OFData *)data
forValue: (OFString *)value
type: (DWORD)type
{
size_t length = data.count * data.itemSize;
LSTATUS status;
if (length > UINT32_MAX)
@throw [OFOutOfRangeException exception];
if ((status = RegSetValueExW(_hKey, value.UTF16String, 0, type,
data.items, (DWORD)length)) != ERROR_SUCCESS)
@throw [OFSetWindowsRegistryValueFailedException
exceptionWithRegistryKey: self
value: value
data: data
type: type
status: status];
}
- (OFString *)stringForValue: (OFString *)value
subkeyPath: (OFString *)subkeyPath
{
return [self stringForValue: value
subkeyPath: subkeyPath
flags: RRF_RT_REG_SZ
type: NULL];
}
- (OFString *)stringForValue: (OFString *)value
subkeyPath: (OFString *)subkeyPath
flags: (DWORD)flags
type: (LPDWORD)type
{
void *pool = objc_autoreleasePoolPush();
OFData *data = [self dataForValue: value
subkeyPath: subkeyPath
flags: flags
type: type];
const of_char16_t *UTF16String;
size_t length;
OFString *ret;
if (data == nil)
return nil;
UTF16String = data.items;
length = data.count;
if (data.itemSize != 1 || length % 2 == 1)
@throw [OFInvalidFormatException exception];
length /= 2;
/*
* REG_SZ and REG_EXPAND_SZ contain a \0, but can contain data after it
* that should be ignored.
*/
for (size_t i = 0; i < length; i++) {
if (UTF16String[i] == 0) {
length = i;
break;
}
}
ret = [[OFString alloc] initWithUTF16String: UTF16String
length: length];
objc_autoreleasePoolPop(pool);
return [ret autorelease];
}
- (void)setString: (OFString *)string
forValue: (OFString *)value
{
[self setString: string
forValue: value
type: REG_SZ];
}
- (void)setString: (OFString *)string
forValue: (OFString *)value
type: (DWORD)type
{
void *pool = objc_autoreleasePoolPush();
OFData *data;
data = [OFData dataWithItems: string.UTF16String
itemSize: sizeof(of_char16_t)
count: string.UTF16StringLength + 1];
[self setData: data
forValue: value
type: type];
objc_autoreleasePoolPop(pool);
}
- (void)deleteValue: (OFString *)value
{
void *pool = objc_autoreleasePoolPush();
LSTATUS status;
if ((status = RegDeleteValueW(_hKey, value.UTF16String)) !=
ERROR_SUCCESS)
@throw [OFDeleteWindowsRegistryValueFailedException
exceptionWithRegistryKey: self
value: value
status: status];
objc_autoreleasePoolPop(pool);
}
- (void)deleteSubkeyAtPath: (OFString *)subkeyPath
{
void *pool = objc_autoreleasePoolPush();
LSTATUS status;
if ((status = RegDeleteKeyW(_hKey, subkeyPath.UTF16String)) !=
ERROR_SUCCESS)
@throw [OFDeleteWindowsRegistryKeyFailedException
exceptionWithRegistryKey: self
subkeyPath: subkeyPath
status: status];
objc_autoreleasePoolPop(pool);
}
@end