Parse MSI installers by call MSI database [C#]

缺乏、安全感 2022-12-20 01:50 131阅读 0赞

Purpose: Parse MSI installer, to get information such as product name, product code, properties etc.

MSI is a standard windows install techonoly, so there are APIs for developers to access. But they are c/c++ methods, instead of C\#. After google, i found the ‘Wrapping the Windows Installer 2.0 API’([http://www.codeproject.com/KB/cs/msiinterop.aspx][http_www.codeproject.com_KB_cs_msiinterop.aspx]), which is can let .net developers access MSI api easily.

After download the library, you can visit MSI datatable like this

1:  using System;

2:  using WindowsInstaller;

4:  namespace MsiTest

5:  {

6:      class Program

7:      {

8:          static void Main(string[] args)

9:          {

10:              test("c:\\xxx.msi");

11:          }

12:

13:          private static void test(string fileName)

14:          {

15:              IntPtr databasePtr;

16:              var retDatabase = MsiInterop.MsiOpenDatabase(fileName, MsiDbPersistMode.ReadOnly, out databasePtr);

17:

18:              IntPtr viewPtr;

19:              var ret = MsiInterop.MsiDatabaseOpenView(databasePtr, "SELECT Value FROM Property where Property = 'SecureCustomProperties'", out viewPtr);

20:

21:              IntPtr recordPtr = IntPtr.Zero;

22:              ret = MsiInterop.MsiViewExecute(viewPtr, IntPtr.Zero);

23:              ret = MsiInterop.MsiViewFetch(viewPtr, ref recordPtr);

24:

25:              uint buffer_length = 2550;

26:              string return_buffer = new string(' ', (int)buffer_length);

27:              MsiInterop.MsiRecordGetString(recordPtr, 1, return_buffer, ref buffer_length);

28:              MsiInterop.MsiCloseAllHandles();

29:

30:              Console.WriteLine(return_buffer.Trim());

31:          }