Leaked source code of windows server 2003
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//+---------------------------------------------------------------------------
//
// Microsoft Windows
// Copyright (C) Microsoft Corporation, 1997.
//
// File: M O D E M D I . C P P
//
// Contents: Modem coclass device installer hook.
//
// Notes:
//
// Author: shaunco 7 May 1997
//
//----------------------------------------------------------------------------
#include "pch.h"
#pragma hdrstop
#include "ncreg.h"
#include "ncsetup.h"
HRESULT
HrUpdateLegacyRasTapiDevices ();
//+---------------------------------------------------------------------------
//
// Function: HrModemClassCoInstaller
//
// Purpose: Responds to co-class installer messages to install and remove
// net modem adapters.
//
// Arguments:
// dif [in] See SetupApi.
// hdi [in]
// pdeid [in]
// pContext [inout]
//
// Returns: S_OK, SPAPI_E_DI_POSTPROCESSING_REQUIRED, or an error code.
//
// Author: shaunco 3 Aug 1997
//
// Notes:
//
HRESULT
HrModemClassCoInstaller (
IN DI_FUNCTION dif,
IN HDEVINFO hdi,
IN PSP_DEVINFO_DATA pdeid,
IN OUT PCOINSTALLER_CONTEXT_DATA pContext)
{
HRESULT hr = S_OK;
if (DIF_INSTALLDEVICE == dif)
{
// When we're called during preprocessing, indicated
// we require postprocessing.
//
if (!pContext->PostProcessing)
{
// Documentation indicates it, so we'll assert it.
AssertSz (NO_ERROR == pContext->InstallResult,
"HrModemClassCoInstaller: Bug in SetupApi! "
"InstallResult should be NO_ERROR.");
// Make sure they wouldn't loose our context info
// even if we used it.
#ifdef DBG
pContext->PrivateData = NULL;
#endif // DBG
hr = SPAPI_E_DI_POSTPROCESSING_REQUIRED;
}
else
{
// Check out "context info" to make sure they didn't
// touch it.
//
AssertSz (!pContext->PrivateData, "HrModemClassCoInstaller: "
"Bug in SetupApi! You sunk my battleship! "
"(I mean, you trashed my PrivateData)");
// We are now in the postprocessing phase.
// We will install a virtual network adapter for
// the modem that was just installed but only if
// it was installed successfully.
//
// We should have handled this case back in ModemClassCoInstaller.
//
AssertSz (NO_ERROR == pContext->InstallResult,
"HrModemClassCoInstaller: Bug in ModemClassCoInstaller! "
"InstallResult should be NO_ERROR or we would have "
"returned immediately.");
hr = S_OK;
}
}
else if (DIF_REMOVE == dif)
{
// We're not going to fail remove operations. It's bad enough
// when a user can't add a modem. It pisses them off to no end
// if they can't remove them.
//
hr = S_OK;
}
else if (DIF_DESTROYPRIVATEDATA == dif)
{
(VOID) HrUpdateLegacyRasTapiDevices ();
}
TraceError ("HrModemClassCoInstaller",
(SPAPI_E_DI_POSTPROCESSING_REQUIRED == hr) ? S_OK : hr);
return hr;
}
//+---------------------------------------------------------------------------
//
// Function: HrUpdateLegacyRasTapiDevices
//
// Purpose: Legacy applications such as HPC Explorer 1.1 require
// that modems that are "enabled" for RAS use be specified
// under HKLM\Software\Microsoft\Ras\Tapi Devices\Unimodem.
// The values that exist under these keys are multi-sz's of
// COM ports, Friendly names, and Usage. This routine sets
// those keys corresponding to all modems present on the
// machine (and active in this HW profile).
//
// Arguments:
// (none)
//
// Returns: S_OK or an error code.
//
// Author: shaunco 19 Mar 1998
//
// Notes:
//
HRESULT
HrUpdateLegacyRasTapiDevices ()
{
// Keep lists of strings that we will write as multi-sz to
// HKLM\Software\Microsoft\Ras\Tapi Devices\Unimodem.
//
list<tstring*> lstrAddress;
list<tstring*> lstrFriendlyName;
list<tstring*> lstrUsage;
// Get all of the installed modems.
//
HDEVINFO hdi;
HRESULT hr = HrSetupDiGetClassDevs (&GUID_DEVCLASS_MODEM, NULL,
NULL, DIGCF_PRESENT | DIGCF_PROFILE, &hdi);
if (SUCCEEDED(hr))
{
// Declare these outside the while loop to avoid construction
// destruction at each iteration.
//
tstring strAttachedTo;
tstring strFriendlyName;
// Enumerate the devices and open their dev reg key.
//
DWORD dwIndex = 0;
SP_DEVINFO_DATA deid;
while (SUCCEEDED(hr = HrSetupDiEnumDeviceInfo (hdi, dwIndex++, &deid)))
{
// Try to open the registry key for this modem. If it fails,
// ignore and move on to the next.
//
HKEY hkey;
hr = HrSetupDiOpenDevRegKey(hdi, &deid,
DICS_FLAG_GLOBAL, 0, DIREG_DRV,
KEY_READ, &hkey);
if (SUCCEEDED(hr))
{
// Get the AttachedTo and FriendlyName values for the modem.
// PnPAttachedTo will be present for PnP modems.
//
static const WCHAR c_szModemAttachedTo [] = L"AttachedTo";
static const WCHAR c_szModemPnPAttachedTo[] = L"PnPAttachedTo";
static const WCHAR c_szModemFriendlyName [] = L"FriendlyName";
static const WCHAR c_szUsage [] = L"ClientAndServer";
// Look for PnPAttached to first, then fallback to AttachedTo
// if it failed.
//
hr = HrRegQueryString (hkey, c_szModemPnPAttachedTo,
&strAttachedTo);
if (FAILED(hr))
{
hr = HrRegQueryString (hkey, c_szModemAttachedTo,
&strAttachedTo);
}
if (SUCCEEDED(hr))
{
hr = HrRegQueryString (hkey, c_szModemFriendlyName,
&strFriendlyName);
if (SUCCEEDED(hr))
{
// Add them to our lists.
lstrAddress .push_back (new tstring (strAttachedTo));
lstrFriendlyName.push_back (new tstring (strFriendlyName));
lstrUsage .push_back (new tstring (c_szUsage));
}
}
RegCloseKey (hkey);
}
}
if (HRESULT_FROM_WIN32(ERROR_NO_MORE_ITEMS) == hr)
{
hr = S_OK;
}
SetupDiDestroyDeviceInfoList (hdi);
}
// Now save the lists as multi-sz's.
//
static const WCHAR c_szRegKeyLegacyRasUnimodemTapiDevices[]
= L"Software\\Microsoft\\Ras\\Tapi Devices\\Unimodem";
HKEY hkey;
hr = HrRegCreateKeyEx (HKEY_LOCAL_MACHINE,
c_szRegKeyLegacyRasUnimodemTapiDevices,
REG_OPTION_NON_VOLATILE, KEY_WRITE, NULL, &hkey, NULL);
if (SUCCEEDED(hr))
{
static const WCHAR c_szRegValAddress [] = L"Address";
static const WCHAR c_szRegValFriendlyName [] = L"Friendly Name";
static const WCHAR c_szRegValUsage [] = L"Usage";
(VOID) HrRegSetColString (hkey, c_szRegValAddress, lstrAddress);
(VOID) HrRegSetColString (hkey, c_szRegValFriendlyName, lstrFriendlyName);
(VOID) HrRegSetColString (hkey, c_szRegValUsage, lstrUsage);
static const WCHAR c_szRegValMediaType [] = L"Media Type";
static const WCHAR c_szRegValModem [] = L"Modem";
(VOID) HrRegSetSz (hkey, c_szRegValMediaType, c_szRegValModem);
RegCloseKey (hkey);
}
FreeCollectionAndItem (lstrUsage);
FreeCollectionAndItem (lstrFriendlyName);
FreeCollectionAndItem (lstrAddress);
TraceError ("HrUpdateLegacyRasTapiDevices", hr);
return hr;
}