How programantically enable file sharing (or 'why doesn't snetcfg.exe work?')
I've been trying for a while now to programatically enable file sharing
on Windows XP and Windows 2000 for a local application running under a non-domain controlled network, on a computer which has never been authorized for file sharing before.
It appears to me that there is no documented way to share a file or folder unless and until the user manually enables file sharing by using the file manager to either run the network setup wizard, or click the "just enable file sharing" checkbox in response to right clicking the file or folder to be shared in windows file manager and then selecting 'sharing'.
According to Google anyway, the DDK
sample program snetcfg is supposed to do what I want. I've compiled the
DDK version, and also written my own simplified version using ATL.
Neither seems to really work.
Uninstalling withsnetcfg.exe works:
snetcfg.exe -v -u MS_Server
But installing starts the server service, butthe user still has to use
file manager's user interface to enable file sharing, both on XP and
2000.Neither form of the snetcfg command line works for me:
snetcfg.exe -v -u MS_Server
or the long form
snetcfg.exe -v -l %system%\inf \netserv.inf -c S -i ms_server
I wrote a simplified version of snetcfg that uninstalls ms_server and
then reinstalls it, since some google hits recommend this technique.
In both the ddk sample snetcfg and my simplified version the api calls
all succeed as expected.
I'd appreciate any insights on how to programatically enable file and
printer sharing that anyone might have. An out line of my C++ attempt
follows.
Thanks
Jim Howard
grayraven42 [at] gmail [dot] com
// outline version of a c++ program to uninstall
// and then reinstall ms_server
//uninstall
// Get an INetCfg object
CComPtr<INetCfg> Cfg
HRESULT hr = Cfg.CoCreateInstance(CLSID_CNetCfg, NULL);
//...
// lock the object
hr = Cfg.QueryInterface(&lock);
if (SUCCEEDED(hr))
{ ....
hr = lock->AcquireWriteLock(
c_cmsTimeout,
c_szSampleNetcfgApp,
&szLockedBy);
...
}
// initialize the configuration object
hr = Cfg->Initialize(0);
// do the uninstall
CComPtr<INetCfgComponent> ncc;
const HRESULT HrNcc =
Cfg->FindComponent(A2W(NETCFG_SERVICE_CID_MS_SERVER), &ncc);
// get the configuration class pointer
CComPtr<INetCfgClass> ncClass;
hr = Cfg->QueryNetCfgClass(&GUID_DEVCLASS_NETSERVICE, IID_INetCfgClass,
(void**)&ncClass);
// get the setup pointer
CComPtr<INetCfgClassSetup> ncClassSetup;
ncClass->QueryInterface(IID_INetCfgClassSetup,(void**)&ncClassSetup);
// do the actual uninstall
hr = ncClassSetup->DeInstall (ncc, &m_OboToken, NULL);
// clean up
Cfg->Apply();
Cfg->Uninitialize();
lock->ReleaseWriteLock();
/////////////////////////
//Install MS_Server
//////////////////////
CComPtr<INetCfg> Cfg
CComPtr<INetCfgLock> lock;
// here we obtain and lock net configuration object Cfg exactly as shown
//above
// variables setup here
// copy netserve.inf using the setup api
BOOL bSetup = SetupCopyOEMInf(
path, // usually c:\windows\inf\netserv.inf
NULL, // other files are in the
// same dir. as primary INF
SPOST_PATH, // first param. contains path to INF
0, // default copy style
szInfNameAfterCopy, // receives the name of the INF
// after it is copied to %windir%\inf
MAX_PATH, // max buf. size for the above
NULL, // receives required size if non-null
NULL); // optionally retrieves filename
}
// do the actual install
CComPtr<INetCfgClassSetup> ncClassSetup;
CComPtr<INetCfgComponent> ncc;
HRESULT hr(E_FAIL);
hr = Cfg->QueryNetCfgClass (&GUID_DEVCLASS_NETSERVICE,
IID_INetCfgClassSetup,(void**)&ncClassSetup);
if(SUCCEEDED(hr))
{
hr = ncClassSetup->Install(
A2W(NETCFG_SERVICE_CID_MS_SERVER),
&m_OboToken,NSF_POSTSYSINSTALL,
0, // <upgrade-from-build-num>
NULL, // answerfile name
NULL, // answerfile section name
&ncc);
// clean up
Cfg->Apply();
Cfg->Uninitialize();
lock->ReleaseWriteLock();
