Vista_UAC

• Download vista_UAC.zip - 28.4 KB

Introduction

This article describes about communicating with the service with elevating and without elevating on Vista.I have taken use of named events for creating the same.

Background

Showing the UI through service is really a big task as sending messages across the sessions have been banned on vista.

Using the Demo Project

1. Copy the MessageBox folder to the c:\ drive

2. Copy all the binaries in one folder .Install the service using Vista_UAC_Service.exe install

3. Use Vista_XP_Compatible.exe for testing the UI which is a created process through the service.

Blocks of code should be set as style "Formatted" like this:

//
// Any source code blocks look like this
//
// Giving permissions for all users for the objects has been given at msdn
    <a href="http://msdn2.microsoft.com/en-us/library/ms717798.aspxTCHAR">http://msdn2.microsoft.com/en-us/library/ms717798.aspx
    TCHAR</a> * szSD = TEXT("D:")       // Discretionary ACL
        TEXT("(A;OICI;GA;;;BG)")     // Allow access to 
                                     // built-in guests
        TEXT("(A;OICI;GA;;;AN)")     // Allow access to 
                                     // anonymous logon
        TEXT("(A;OICI;GRGWGX;;;AU)") // Allow 
                                     // read/write/execute 
                                     // to authenticated 
                                     // users
        TEXT("(A;OICI;GA;;;BA)");    // Allow full control 
                                     // to administrators
For getting the session ids in the session 0


WTSEnumerateSessions(WTS_CURRENT_SERVER_HANDLE,0,1,&wsi,&dwNos);

for(int i=0;i<dwNos;i++)

{

if(wsi[i].State == WTSActive)

{

dwSessionId= wsi[i].SessionId;

}

}
Use createprocessasuser for creating the process


bool bRet = ::CreateProcessAsUser( Token, L"c:\\Messagebox\\MessageBox.exe", NULL, NULL, NULL, FALSE,

CREATE_NEW_PROCESS_GROUP | CREATE_UNICODE_ENVIRONMENT|CREATE_NO_WINDOW , pEnv, NULL,

&startupInfo, &processInfo);