从SQL Server中检索CLR DLL

是否有可能重新生成或检索您之前导入到SQL中的VB CLR dll文件？我已经得到的地步，我能够做找到这个DLL的内容：从SQL Server中检索CLR DLL

SELECT * FROM sys.assembly_files

，但我也不怎么是否有可能重建DLL与内容在那里发现。

任何帮助将是非常赞赏:)

2010-11-22 Jens

我终于明白了。我添加了一个新的组件，其处理DLL的创建：

CREATE ASSEMBLY [SqlServerProject1] 
AUTHORIZATION [dbo] 
FROM 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
WITH PERMISSION_SET = UNSAFE;

之后添加我的程序来使用它：

CREATE PROCEDURE [dbo].[sspSaveAssemblyToDisk] 
@pAssemblyname NVARCHAR (4000), @pFilename NVARCHAR (4000) 
AS EXTERNAL NAME [SqlServerProject1].[SqlServerProject1.StoredProcedures].[sspSaveAssemblyToDisk]

然后我跑我的程序，并给它路径来保存我的文件和程序集的名称：

exec sspSaveAssemblyToDisk 'MyAssemblyName','C:\Assemblies\MyAssembly.dll'

请确保您有写入权限保存您的文件的位置，然后你去！

来源

2010-11-23 15:04:36 Jens

好的解决方案。请接受你自己的答案来解决问题。 – 2010-11-23 16:29:02

有一个很好的例子here。以下代码来自所提供的链接。

DECLARE @IMG_PATH VARBINARY(MAX) 
DECLARE @ObjectToken INT 

SELECT @IMG_PATH = content FROM sys.assembly_files WHERE assembly_id = 65536 

EXEC sp_OACreate 'ADODB.Stream', @ObjectToken OUTPUT 
     EXEC sp_OASetProperty @ObjectToken, 'Type', 1 
     EXEC sp_OAMethod @ObjectToken, 'Open' 
     EXEC sp_OAMethod @ObjectToken, 'Write', NULL, @IMG_PATH 
     EXEC sp_OAMethod @ObjectToken, 'SaveToFile', NULL, 'D:\SqlServerProject1.dll', 2 
     EXEC sp_OAMethod @ObjectToken, 'Close' 
     EXEC sp_OADestroy @ObjectToken

我想象.net反射将是您的朋友逆向工程的DLL提取一次，但我不知道它是否以任何方式经过加密。

来源

2010-11-23 02:40:29

感谢您的支持。不完全是我所需要的，但它给了我一个正确的方向。 – Jens 2010-11-23 15:00:02

我最终这样做了。

我得到了我想为其生成DLL的CLR程序集的创建脚本。

CREATE ASSEMBLY [asmClr] 
AUTHORIZATION [dbo] 
FROM [some_hex_value] //hex value removed for brevity 
WITH PERMISSION_SET = UNSAFE;

我删除开始的“0x”字符串后，使用C＃将十六进制值（some_hex_value）转换为字节。 SO上也有LINQ示例用于将十六进制转换为字节。

byte[] StringToByteArray(string hex) 
{ 
    var bytes = new byte[hex.Length/2]; // 2 hex chars = 1 byte 
    for (int i = 0; i < bytes.Length; i++) 
    { 
     string bytehex = hex.Substring(2*i, 2); 
     byte b = Byte.Parse(bytehex, NumberStyles.HexNumber); 
     bytes[i] = b; 
    } 
    return bytes; 
}

我将字节写入文件系统。

File.WriteAllBytes(@"D:\clr.dll", bytes);

我用ILSpy来查看dll源代码。

来源

2012-06-21 14:11:41 hIpPy

我还需要使用System.Globalization进行添加;在我的标题中为此工作 – ConstantineK 2015-06-10 16:04:32

从SQL Server中检索CLR DLL

回答

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