如何使用 Delphi 2010 远程读取二进制注册表数据？
我试图远程读取二进制 (REG_BINARY) 注册表值，但除了垃圾之外什么也没有得到。有什么想法这段代码有什么问题吗？我正在使用 Delphi 2010：
function GetBinaryRegistryData(ARootKey: HKEY; AKey, AValue, sMachine: string; var sResult: string): boolean;
var
MyReg: TRegistry;
RegDataType: TRegDataType;
DataSize, Len: integer;
sBinData: string;
bResult: Boolean;
begin
bResult := False;
MyReg := TRegistry.Create(KEY_QUERY_VALUE);
try
MyReg.RootKey := ARootKey;
if MyReg.RegistryConnect('\\' + sMachine) then
begin
if MyReg.KeyExists(AKey) then
begin
if MyReg.OpenKeyReadOnly(AKey) then
begin
try
RegDataType := MyReg.GetDataType(AValue);
if RegDataType = rdBinary then
begin
DataSize := MyReg.GetDataSize(AValue);
if DataSize > 0 then
begin
SetLength(sBinData, DataSize);
Len := MyReg.ReadBinaryData(AValue, PChar(sBinData)^, DataSize);
if Len <> DataSize then
raise Exception.Create(SysErrorMessage(ERROR_CANTREAD))
else
begin
sResult := sBinData;
bResult := True;
end;
end;
end;
except
MyReg.CloseKey;
end;
MyReg.CloseKey;
end;
end;
end;
finally
MyReg.Free;
end;
Result := bResult;
end;
我这样称呼它：
GetBinaryRegistryData(
HKEY_LOCAL_MACHINE,
'\SOFTWARE\Microsoft\Windows NT\CurrentVersion',
'DigitalProductId', '192.168.100.105',
sProductId
);
WriteLn(sProductId);
我从控制台上的 WriteLn 收到的结果是：
ñ ♥ ???????????6Z ????1 ???????☺ ???♦ ??3 ? ??? ?
??
I am trying to remotely read a binary (REG_BINARY) registry value, but I get nothing but junk back. Any ideas what is wrong with this code? I'm using Delphi 2010:
function GetBinaryRegistryData(ARootKey: HKEY; AKey, AValue, sMachine: string; var sResult: string): boolean;
var
MyReg: TRegistry;
RegDataType: TRegDataType;
DataSize, Len: integer;
sBinData: string;
bResult: Boolean;
begin
bResult := False;
MyReg := TRegistry.Create(KEY_QUERY_VALUE);
try
MyReg.RootKey := ARootKey;
if MyReg.RegistryConnect('\\' + sMachine) then
begin
if MyReg.KeyExists(AKey) then
begin
if MyReg.OpenKeyReadOnly(AKey) then
begin
try
RegDataType := MyReg.GetDataType(AValue);
if RegDataType = rdBinary then
begin
DataSize := MyReg.GetDataSize(AValue);
if DataSize > 0 then
begin
SetLength(sBinData, DataSize);
Len := MyReg.ReadBinaryData(AValue, PChar(sBinData)^, DataSize);
if Len <> DataSize then
raise Exception.Create(SysErrorMessage(ERROR_CANTREAD))
else
begin
sResult := sBinData;
bResult := True;
end;
end;
end;
except
MyReg.CloseKey;
end;
MyReg.CloseKey;
end;
end;
end;
finally
MyReg.Free;
end;
Result := bResult;
end;
And I call it like this:
GetBinaryRegistryData(
HKEY_LOCAL_MACHINE,
'\SOFTWARE\Microsoft\Windows NT\CurrentVersion',
'DigitalProductId', '192.168.100.105',
sProductId
);
WriteLn(sProductId);
The result I receive from the WriteLn on the console is:
ñ ♥ ???????????6Z ????1 ???????☺ ???♦ ??3 ? ??? ?
??
如果你对这篇内容有疑问，欢迎到本站社区发帖提问 参与讨论，获取更多帮助，或者扫码二维码加入 Web 技术交流群。
绑定邮箱获取回复消息
由于您还没有绑定你的真实邮箱，如果其他用户或者作者回复了您的评论，将不能在第一时间通知您！
发布评论
评论（2）
假设您已经远程连接，请尝试使用
GetDataAsString函数从注册表读取二进制数据。
Assuming that you are already connected remotely, try using the
GetDataAsStringfunctionto read binary data from the registry.
您使用的是 Delphi 2010，因此所有字符都是两个字节宽。当您设置结果字符串的长度时，您将分配所需空间量的两倍。然后您调用
ReadBinaryData，它会填充您的缓冲区的一半。每个字符有两个字节的数据。单独查看每个字节，您可能会发现您的数据看起来不像垃圾。不要使用字符串来存储任意数据。使用字符串来存储文本。要存储任意 blob 数据，请使用
TBytes，它是一个字节数组。You're using Delphi 2010, so all your characters are two bytes wide. When you set the length of your result string, you're allocating twice the amount of space you need. Then you call
ReadBinaryData, and it fills half your buffer. There are two bytes of data in each character. Look at each byte separately, and you'll probably find that your data looks less garbage-like.Don't use strings for storing arbitrary data. Use strings for storing text. To store arbitrary blobs of data, use
TBytes, which is an array of bytes.