Source code of Windows XP (NT5)
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658 lines
28 KiB

#include "mslocusr.h"
#include "msluglob.h"
#include "resource.h"
/* InstallLogonDialog - check if there is a primary logon provider already on
* the system, and if not, install MSLOCUSR as a net provider and make it the
* primary logon. Returns TRUE if the NP was installed.
*
* This chunk of hideous registry code exists because NETDI.DLL (the win95
* network setup engine) (a) has no programmatic interface, it just assumes
* it's being driven by NETCPL.CPL; (b) is 16-bit code, so even if it had
* a programmatic interface, we'd have to thunk; and (c) if everything's
* not consistent in his database of what network components are installed
* and which are bound to which, then the next time the user brings up the
* network CPL, any components which don't make sense just get silently
* deinstalled.
*
* The set of registry keys and values which need to be added, changed, or
* updated was gleaned from a registry diff done after using the real network
* CPL to install this logon provider from an INF. A similar registry diff
* and similar code could be created to programmatically install a transport.
* Don't ask me to do it for you, though...
*
* Note that in case of registry errors, we just bail out. It would require
* a huge amount of extra code to keep track of everything that had been done
* up to that point and undo it. The worst that happens if we do strange
* things to the net component database is that NETDI will deinstall our
* component the next time the user brings up the network control panel. It
* shouldn't actually cause any crashes or anything like that.
*/
BOOL InstallLogonDialog(void)
{
HKEY hkey; /* used for various work */
LONG err;
TCHAR szBuf[MAX_PATH];
DWORD dwType;
DWORD cbData;
DWORD dwTemp;
DWORD dwDisp;
NLS_STR nlsNPName(MAX_RES_STR_LEN);
if (nlsNPName.LoadString(IDS_NP_NAME) != ERROR_SUCCESS)
return FALSE;
err = RegOpenKeyEx(HKEY_LOCAL_MACHINE, "Network\\Logon", 0,
KEY_QUERY_VALUE | KEY_SET_VALUE, &hkey);
if (err != ERROR_SUCCESS)
return FALSE; /* big problems if we can't get this guy */
/* Get the PrimaryProvider value, which is the name of the net provider
* that's handling the main logon dialog. If it's there and not blank,
* then presumably the user's on a LAN or something, so we don't want
* to replace the logon dialog.
*/
cbData = sizeof(szBuf);
err = RegQueryValueEx(hkey, "PrimaryProvider", NULL, &dwType,
(LPBYTE)szBuf, &cbData);
if (err == ERROR_SUCCESS && szBuf[0] != '\0') {
RegCloseKey(hkey);
return FALSE;
}
/* Make us the primary logon provider, as far as MPR and the logon code
* are concerned.
*/
err = RegSetValueEx(hkey, "PrimaryProvider", 0, REG_SZ,
(LPBYTE)nlsNPName.QueryPch(), nlsNPName.strlen()+1);
RegCloseKey(hkey);
if (err != ERROR_SUCCESS)
return FALSE;
/* Under HKLM\SW\MS\W\CV\Network\Real Mode Net, preferredredir=null string,
* since we will now be the primary network in all respects. NETDI needs
* this to avoid getting confused.
*/
err = RegOpenKeyEx(HKEY_LOCAL_MACHINE, "Software\\Microsoft\\Windows\\CurrentVersion\\Network\\Real Mode Net",
0, KEY_QUERY_VALUE, &hkey);
if (err == ERROR_SUCCESS) {
err = RegSetValueEx(hkey, "preferredredir", 0, REG_SZ, (LPBYTE)TEXT(""), sizeof(TCHAR));
RegCloseKey(hkey);
}
/* Add new keys under HKLM\System\CurrentControlSet which will actually
* make MPR load our DLL as a net provider.
*/
HKEY hkeyFamilyClient;
err = RegCreateKeyEx(HKEY_LOCAL_MACHINE, "System\\CurrentControlSet\\Services\\NPSTUB\\NetworkProvider",
0, "", REG_OPTION_NON_VOLATILE,
KEY_SET_VALUE,
NULL, &hkeyFamilyClient, &dwDisp);
if (err == ERROR_SUCCESS) {
RegSetValueEx(hkeyFamilyClient, "Name", 0, REG_SZ,
(LPBYTE)nlsNPName.QueryPch(), nlsNPName.strlen()+1);
RegSetValueEx(hkeyFamilyClient, "ProviderPath", 0, REG_SZ,
(LPBYTE)TEXT("ienpstub.dll"), 11 * sizeof(TCHAR));
RegSetValueEx(hkeyFamilyClient, "RealDLL", 0, REG_SZ,
(LPBYTE)TEXT("mslocusr.dll"), 13 * sizeof(TCHAR));
RegSetValueEx(hkeyFamilyClient, "Description", 0, REG_SZ,
(LPBYTE)nlsNPName.QueryPch(), nlsNPName.strlen()+1);
dwTemp = WNNC_NET_MSNET;
RegSetValueEx(hkeyFamilyClient, "NetID", 0, REG_DWORD,
(LPBYTE)&dwTemp, sizeof(dwTemp));
dwTemp = 0x40000000;
RegSetValueEx(hkeyFamilyClient, "CallOrder", 0, REG_DWORD,
(LPBYTE)&dwTemp, sizeof(dwTemp));
RegCloseKey(hkeyFamilyClient);
}
err = RegCreateKeyEx(HKEY_LOCAL_MACHINE, "System\\CurrentControlSet\\Control\\NetworkProvider\\Order",
0, "", REG_OPTION_NON_VOLATILE,
KEY_SET_VALUE,
NULL, &hkeyFamilyClient, &dwDisp);
if (err == ERROR_SUCCESS) {
cbData = sizeof(szBuf);
if (RegQueryValueEx(hkeyFamilyClient, "NPSTUB", NULL, &dwType,
(LPBYTE)szBuf, &cbData) == ERROR_SUCCESS) {
/* Our provider is already installed! Better not do anything
* more than just making it default, which we've already done.
*/
RegCloseKey(hkeyFamilyClient);
return FALSE;
}
RegSetValueEx(hkeyFamilyClient, "NPSTUB", 0, REG_SZ,
(LPBYTE)TEXT(""), sizeof(TCHAR));
RegCloseKey(hkeyFamilyClient);
}
/* We've now installed our NP in the registry, and to see it appear we
* need a reboot. So from here on, if we bail out, we return TRUE.
*/
/* First big chunk of network component database management. Under
* HKLM\System\CurrentControlSet\Services\Class\NetClient there is a
* four-digit numeric subkey (e.g., "0000") for each network client.
* One of them will be the default network client as far as NETDI's
* database is concerned; this is indicated by the existence of the
* "Ndi\Default" subkey under the number key. If we find one of those
* guys, we save away the DeviceID value from the Ndi subkey so we can
* tweak some configuration flags later in another part of the database.
*
* While enumerating the keys, we keep track of the highest number we've
* seen so far. When we're done, we add 1 to that and use that as the
* subkey name for our client. The number is kept separate from the
* RegEnumKey index because the numbers are not necessarily packed (nor
* will RegEnumKey necessarily return them in numeric order!).
*/
HKEY hkeyNetClient;
err = RegCreateKeyEx(HKEY_LOCAL_MACHINE, "System\\CurrentControlSet\\Services\\Class\\NetClient",
0, "", REG_OPTION_NON_VOLATILE,
KEY_CREATE_SUB_KEY | KEY_ENUMERATE_SUB_KEYS | KEY_QUERY_VALUE | KEY_SET_VALUE,
NULL, &hkeyNetClient, &dwDisp);
if (err != ERROR_SUCCESS)
return TRUE;
UINT nFamilyNum;
TCHAR szFamilyNumString[5]; /* four digits plus null */
TCHAR szDefaultDeviceID[MAX_PATH] = "";
if (dwDisp == REG_OPENED_EXISTING_KEY) {
NLS_STR nlsSubKey(20); /* enough for four digits, plus some just in case */
DWORD iSubKey = 0;
UINT maxSubKey = 0;
for (;;) {
err = RegEnumKey(hkeyNetClient, iSubKey, nlsSubKey.Party(), nlsSubKey.QueryAllocSize());
nlsSubKey.DonePartying();
if (err != ERROR_SUCCESS)
break;
NLS_STR nls2(nlsSubKey.strlen() + 12);
if (nls2.QueryError() == ERROR_SUCCESS) {
nls2 = nlsSubKey;
nls2.strcat("\\Ndi\\Default");
cbData = sizeof(szBuf);
err = RegQueryValue(hkeyNetClient, nls2.QueryPch(), szBuf, (PLONG)&cbData);
if (err == ERROR_SUCCESS) {
if (!lstrcmpi(szBuf, "True")) {
HKEY hkeyNdi;
NLS_STR nls3(nlsSubKey.strlen() + 5);
if (nls3.QueryError() == ERROR_SUCCESS) {
nls3 = nlsSubKey;
nls3.strcat("\\Ndi");
err = RegOpenKeyEx(hkeyNetClient, nls3.QueryPch(), 0, KEY_QUERY_VALUE, &hkeyNdi);
if (err == ERROR_SUCCESS) {
cbData = sizeof(szDefaultDeviceID);
RegQueryValueEx(hkeyNdi, "DeviceID", NULL, &dwType,
(LPBYTE)szDefaultDeviceID, &cbData);
RegCloseKey(hkeyNdi);
}
}
}
RegDeleteKey(hkeyNetClient, nls2.QueryPch());
}
}
UINT nSubKey = nlsSubKey.atoi();
if (nSubKey > maxSubKey)
maxSubKey = nSubKey;
iSubKey++;
}
nFamilyNum = maxSubKey+1;
}
else
nFamilyNum = 0;
wsprintf(szFamilyNumString, "%04d", nFamilyNum);
err = RegCreateKeyEx(hkeyNetClient, szFamilyNumString,
0, "", REG_OPTION_NON_VOLATILE,
KEY_CREATE_SUB_KEY | KEY_SET_VALUE,
NULL, &hkeyFamilyClient, &dwDisp);
if (err == ERROR_SUCCESS) {
RegSetValueEx(hkeyFamilyClient, "DriverDesc", 0, REG_SZ,
(LPBYTE)nlsNPName.QueryPch(), nlsNPName.strlen()+1);
RegSetValueEx(hkeyFamilyClient, "InfPath", 0, REG_SZ,
(LPBYTE)TEXT("NETFAM.INF"), 11 * sizeof(TCHAR));
RegSetValueEx(hkeyFamilyClient, "DriverDate", 0, REG_SZ,
(LPBYTE)TEXT(" 5-21-1997"), 11 * sizeof(TCHAR));
err = RegCreateKeyEx(hkeyFamilyClient, "Ndi",
0, "", REG_OPTION_NON_VOLATILE,
KEY_CREATE_SUB_KEY | KEY_SET_VALUE,
NULL, &hkey, &dwDisp);
if (err == ERROR_SUCCESS) {
RegSetValueEx(hkey, "DeviceID", 0, REG_SZ,
(LPBYTE)TEXT("FAMILY"), 7 * sizeof(TCHAR));
RegSetValueEx(hkey, "NetworkProvider", 0, REG_SZ,
(LPBYTE)nlsNPName.QueryPch(), nlsNPName.strlen()+1);
RegSetValueEx(hkey, "InstallInf", 0, REG_SZ,
(LPBYTE)TEXT(""), sizeof(TCHAR));
RegSetValueEx(hkey, "InfSection", 0, REG_SZ,
(LPBYTE)TEXT("FAMILY.ndi"), 11 * sizeof(TCHAR));
{
NLS_STR nlsHelpText(MAX_RES_STR_LEN);
if (nlsHelpText.LoadString(IDS_NETFAM_HELP_TEXT) == ERROR_SUCCESS) {
RegSetValueEx(hkey, "HelpText", 0, REG_SZ,
(LPBYTE)nlsHelpText.QueryPch(), nlsHelpText.strlen() + 1);
}
}
HKEY hkeyInterfaces;
err = RegCreateKeyEx(hkey, "Interfaces",
0, "", REG_OPTION_NON_VOLATILE,
KEY_CREATE_SUB_KEY | KEY_SET_VALUE,
NULL, &hkeyInterfaces, &dwDisp);
if (err == ERROR_SUCCESS) {
RegSetValueEx(hkeyInterfaces, "DefLower", 0, REG_SZ,
(LPBYTE)TEXT("netbios,ipxDHost"), 13 * sizeof(TCHAR));
RegSetValueEx(hkeyInterfaces, "LowerRange", 0, REG_SZ,
(LPBYTE)TEXT("netbios,ipxDHost"), 13 * sizeof(TCHAR));
RegSetValueEx(hkeyInterfaces, "Lower", 0, REG_SZ,
(LPBYTE)TEXT("netbios,ipxDHost"), 13 * sizeof(TCHAR));
RegSetValueEx(hkeyInterfaces, "Upper", 0, REG_SZ,
(LPBYTE)TEXT(""), sizeof(TCHAR));
RegCloseKey(hkeyInterfaces);
}
if (err == ERROR_SUCCESS)
err = RegSetValue(hkey, "Install", REG_SZ, "FAMILY.Install", 14);
if (err == ERROR_SUCCESS)
err = RegSetValue(hkey, "Remove", REG_SZ, "FAMILY.Remove", 13);
if (err == ERROR_SUCCESS)
err = RegSetValue(hkey, "Default", REG_SZ, "True", 5);
RegCloseKey(hkey);
}
RegCloseKey(hkeyFamilyClient);
}
RegCloseKey(hkeyNetClient);
if (err != ERROR_SUCCESS)
return TRUE;
/* Now the other half of the database, under HKLM\Enum\Network. This has
* a subkey (named by DeviceID, as seen above) for each network component.
* Under each such subkey, there's a numbered subkey for each instance.
* We have three tasks here: First of all, for each instance of the client
* that used to be the default, we have to mask out bit 0x00000010 from
* the ConfigFlags value, to make it no longer the default client. Then
* we have to create a new branch for our own client, which mainly points
* back to the other section of the database which we just finished with.
* Finally, we must find MSTCP and add a binding between it and our client,
* because NETDI assumes that a client that's not bound to any transports
* must be messed up, so it deletes it.
*/
HKEY hkeyEnum;
err = RegCreateKeyEx(HKEY_LOCAL_MACHINE, "Enum\\Network",
0, "", REG_OPTION_NON_VOLATILE,
KEY_CREATE_SUB_KEY | KEY_ENUMERATE_SUB_KEYS | KEY_QUERY_VALUE | KEY_SET_VALUE,
NULL, &hkeyEnum, &dwDisp);
if (err != ERROR_SUCCESS)
return TRUE;
/* Un-default the default client. */
if (szDefaultDeviceID[0] != '\0') {
HKEY hkeyDefaultDevice;
err = RegOpenKeyEx(hkeyEnum, szDefaultDeviceID, 0,
KEY_ENUMERATE_SUB_KEYS | KEY_QUERY_VALUE | KEY_SET_VALUE,
&hkeyDefaultDevice);
if (err == ERROR_SUCCESS) {
NLS_STR nlsSubKey(20); /* enough for four digits, plus some just in case */
DWORD iSubKey = 0;
for (;;) {
err = RegEnumKey(hkeyDefaultDevice, iSubKey, nlsSubKey.Party(), nlsSubKey.QueryAllocSize());
nlsSubKey.DonePartying();
if (err != ERROR_SUCCESS)
break;
HKEY hkeyInstance;
err = RegOpenKeyEx(hkeyDefaultDevice, nlsSubKey.QueryPch(),
0, KEY_QUERY_VALUE | KEY_SET_VALUE, &hkeyInstance);
if (err == ERROR_SUCCESS) {
DWORD dwConfigFlags;
cbData = sizeof(dwConfigFlags);
err = RegQueryValueEx(hkeyInstance, "ConfigFlags", NULL,
&dwType, (LPBYTE)&dwConfigFlags,
&cbData);
if (err == ERROR_SUCCESS &&
(dwType == REG_DWORD || dwType == REG_BINARY) &&
(dwConfigFlags & 0x10)) {
dwConfigFlags &= ~0x10;
RegSetValueEx(hkeyInstance, "ConfigFlags", 0, dwType,
(LPBYTE)&dwConfigFlags, cbData);
}
RegCloseKey(hkeyInstance);
}
iSubKey++;
}
RegCloseKey(hkeyDefaultDevice);
}
}
/* Now create a new branch for our client. */
err = RegCreateKeyEx(hkeyEnum, "FAMILY\\0000",
0, "", REG_OPTION_NON_VOLATILE,
KEY_SET_VALUE,
NULL, &hkeyFamilyClient, &dwDisp);
if (err == ERROR_SUCCESS) {
RegSetValueEx(hkeyFamilyClient, "Class", 0, REG_SZ,
(LPBYTE)TEXT("NetClient"), 10 * sizeof(TCHAR));
lstrcpy(szBuf, "NetClient\\");
lstrcat(szBuf, szFamilyNumString);
RegSetValueEx(hkeyFamilyClient, "Driver", 0, REG_SZ, (LPBYTE)szBuf, lstrlen(szBuf)+1);
RegSetValueEx(hkeyFamilyClient, "MasterCopy", 0, REG_SZ,
(LPBYTE)TEXT("Enum\\Network\\FAMILY\\0000"), 25 * sizeof(TCHAR));
RegSetValueEx(hkeyFamilyClient, "DeviceDesc", 0, REG_SZ,
(LPBYTE)nlsNPName.QueryPch(), nlsNPName.strlen()+1);
RegSetValueEx(hkeyFamilyClient, "CompatibleIDs", 0, REG_SZ,
(LPBYTE)TEXT("FAMILY"), 7 * sizeof(TCHAR));
RegSetValueEx(hkeyFamilyClient, "Mfg", 0, REG_SZ,
(LPBYTE)TEXT("Microsoft"), 10 * sizeof(TCHAR));
dwTemp = 0x00000010;
RegSetValueEx(hkeyFamilyClient, "ConfigFlags", 0, REG_BINARY,
(LPBYTE)&dwTemp, sizeof(dwTemp));
/* A "Bindings" subkey needs to exist here, with no values in it
* (since our "client" isn't bound to any higher level components
* like servers).
*/
err = RegCreateKeyEx(hkeyFamilyClient, "Bindings",
0, "", REG_OPTION_NON_VOLATILE,
KEY_SET_VALUE,
NULL, &hkey, &dwDisp);
if (err == ERROR_SUCCESS)
RegCloseKey(hkey);
RegCloseKey(hkeyFamilyClient);
}
/* Get MSTCP's enum key, get the first instance, and from it we can find
* the "master" instance. We can then add a binding to ourselves there.
* Can't just assume "0000" as the first one, unfortunately.
*/
err = RegOpenKeyEx(hkeyEnum, "MSTCP", 0,
KEY_ENUMERATE_SUB_KEYS | KEY_QUERY_VALUE | KEY_SET_VALUE,
&hkey);
if (err == ERROR_SUCCESS) {
NLS_STR nlsSubKey(20); /* enough for four digits, plus some just in case */
DWORD iSubKey = 0;
for (;;) {
err = RegEnumKey(hkey, iSubKey, nlsSubKey.Party(), nlsSubKey.QueryAllocSize());
nlsSubKey.DonePartying();
if (err != ERROR_SUCCESS)
break;
HKEY hkeyInstance;
err = RegOpenKeyEx(hkey, nlsSubKey.QueryPch(),
0, KEY_QUERY_VALUE | KEY_SET_VALUE, &hkeyInstance);
if (err == ERROR_SUCCESS) {
cbData = sizeof(szBuf);
err = RegQueryValueEx(hkeyInstance, "MasterCopy", NULL,
&dwType, (LPBYTE)szBuf,
&cbData);
RegCloseKey(hkeyInstance);
/* The MasterCopy value is actually a path to a registry key
* from HKEY_LOCAL_MACHINE. We want to deal with its Bindings
* subkey.
*/
if (err == ERROR_SUCCESS) {
HKEY hkeyBindings;
lstrcat(szBuf, "\\Bindings");
err = RegCreateKeyEx(HKEY_LOCAL_MACHINE, szBuf,
0, "", REG_OPTION_NON_VOLATILE,
KEY_SET_VALUE,
NULL, &hkeyBindings, &dwDisp);
if (err == ERROR_SUCCESS) {
RegSetValueEx(hkeyBindings, "FAMILY\\0000", 0, REG_SZ,
(LPBYTE)TEXT(""), sizeof(TCHAR));
RegCloseKey(hkeyBindings);
}
break; /* abandon enum loop */
}
iSubKey++;
}
}
RegCloseKey(hkey);
}
RegCloseKey(hkeyEnum);
return TRUE;
}
/*
Purpose: Recursively delete the key, including all child values
and keys. Mimics what RegDeleteKey does in Win95.
Snarfed from shlwapi so we don't end up loading him at
boot time.
Returns:
Cond: --
*/
DWORD
DeleteKeyRecursively(
IN HKEY hkey,
IN LPCSTR pszSubKey)
{
DWORD dwRet;
HKEY hkSubKey;
// Open the subkey so we can enumerate any children
dwRet = RegOpenKeyEx(hkey, pszSubKey, 0, KEY_ALL_ACCESS, &hkSubKey);
if (ERROR_SUCCESS == dwRet)
{
DWORD dwIndex;
CHAR szSubKeyName[MAX_PATH + 1];
DWORD cchSubKeyName = ARRAYSIZE(szSubKeyName);
CHAR szClass[MAX_PATH];
DWORD cbClass = ARRAYSIZE(szClass);
// I can't just call RegEnumKey with an ever-increasing index, because
// I'm deleting the subkeys as I go, which alters the indices of the
// remaining subkeys in an implementation-dependent way. In order to
// be safe, I have to count backwards while deleting the subkeys.
// Find out how many subkeys there are
dwRet = RegQueryInfoKey(hkSubKey,
szClass,
&cbClass,
NULL,
&dwIndex, // The # of subkeys -- all we need
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL);
if (NO_ERROR == dwRet)
{
// dwIndex is now the count of subkeys, but it needs to be
// zero-based for RegEnumKey, so I'll pre-decrement, rather
// than post-decrement.
while (ERROR_SUCCESS == RegEnumKey(hkSubKey, --dwIndex, szSubKeyName, cchSubKeyName))
{
DeleteKeyRecursively(hkSubKey, szSubKeyName);
}
}
RegCloseKey(hkSubKey);
dwRet = RegDeleteKey(hkey, pszSubKey);
}
return dwRet;
}
void DeinstallLogonDialog(void)
{
RegDeleteKey(HKEY_LOCAL_MACHINE, "System\\CurrentControlSet\\Services\\NPSTUB\\NetworkProvider");
RegDeleteKey(HKEY_LOCAL_MACHINE, "System\\CurrentControlSet\\Services\\NPSTUB");
HKEY hkey;
if (RegOpenKeyEx(HKEY_LOCAL_MACHINE, "System\\CurrentControlSet\\Control\\NetworkProvider\\Order",
0, KEY_WRITE, &hkey) == ERROR_SUCCESS) {
RegDeleteValue(hkey, "NPSTUB");
RegCloseKey(hkey);
}
char szBuf[MAX_PATH];
if (RegOpenKeyEx(HKEY_LOCAL_MACHINE, "Network\\Logon",
0, KEY_WRITE, &hkey) == ERROR_SUCCESS) {
DWORD cbData = sizeof(szBuf);
DWORD dwType;
LONG err = RegQueryValueEx(hkey, "PrimaryProvider", NULL, &dwType,
(LPBYTE)szBuf, &cbData);
if (err == ERROR_SUCCESS && szBuf[0] != '\0') {
NLS_STR nlsNPName(MAX_RES_STR_LEN);
if (nlsNPName.LoadString(IDS_NP_NAME) == ERROR_SUCCESS) {
if (!::strcmpf(nlsNPName.QueryPch(), szBuf)) {
RegDeleteValue(hkey, "PrimaryProvider");
}
}
}
RegCloseKey(hkey);
}
if (RegOpenKeyEx(HKEY_LOCAL_MACHINE, "Enum\\Network\\FAMILY", 0,
KEY_ENUMERATE_SUB_KEYS | KEY_QUERY_VALUE | KEY_WRITE,
&hkey) == ERROR_SUCCESS) {
UINT i=0;
/* For each instance of us under the Enum branch, fetch the
* corresponding key name under the other half of the database
* and delete it.
*/
for (;;) {
DWORD err = RegEnumKey(hkey, i, szBuf, sizeof(szBuf));
if (err != ERROR_SUCCESS)
break;
HKEY hkeyInstance;
err = RegOpenKeyEx(hkey, szBuf,
0, KEY_QUERY_VALUE | KEY_SET_VALUE, &hkeyInstance);
if (err == ERROR_SUCCESS) {
strcpyf(szBuf, "System\\CurrentControlSet\\Services\\Class\\");
DWORD dwType;
DWORD cbData = sizeof(szBuf) - 40; /* - length of above string */
if (RegQueryValueEx(hkeyInstance, "Driver", NULL, &dwType,
(LPBYTE)szBuf + 40, &cbData) == ERROR_SUCCESS) {
/* szBuf now equals the other branch we need to kill */
DeleteKeyRecursively(HKEY_LOCAL_MACHINE, szBuf);
}
RegCloseKey(hkeyInstance);
}
i++;
}
RegCloseKey(hkey);
DeleteKeyRecursively(HKEY_LOCAL_MACHINE, "Enum\\Network\\FAMILY");
}
/* Now clean up bindings to our client, otherwise PNP will try to install
* us as a new (unknown) device. This involves enumerating components
* under HKLM\Enum\Network; for each one, enumerate the instances; for
* each instance's Bindings key, enumerate the values, and delete all
* values that begin with FAMILY\.
*/
if (RegOpenKeyEx(HKEY_LOCAL_MACHINE, "Enum\\Network", 0,
KEY_ENUMERATE_SUB_KEYS | KEY_QUERY_VALUE | KEY_WRITE,
&hkey) == ERROR_SUCCESS) {
UINT iComponent = 0;
for (;;) {
DWORD err = RegEnumKey(hkey, iComponent, szBuf, sizeof(szBuf));
if (err != ERROR_SUCCESS)
break;
HKEY hkeyComponent;
err = RegOpenKeyEx(hkey, szBuf,
0, KEY_QUERY_VALUE | KEY_ENUMERATE_SUB_KEYS, &hkeyComponent);
if (err == ERROR_SUCCESS) {
/* Opened a component's key. Enumerate its instances, opening
* each one's Bindings subkey.
*/
TCHAR szInstance[16]; /* actually only needs to be "nnnn\Bindings" plus null char */
UINT iInstance = 0;
for (;;) {
err = RegEnumKey(hkeyComponent, iInstance, szInstance, sizeof(szInstance));
if (err != ERROR_SUCCESS)
break;
if (strlenf(szInstance)*sizeof(TCHAR) <= sizeof(szInstance) - sizeof("\\Bindings"))
strcatf(szInstance, "\\Bindings");
HKEY hkeyInstance;
err = RegOpenKeyEx(hkeyComponent, szInstance,
0, KEY_QUERY_VALUE | KEY_SET_VALUE, &hkeyInstance);
if (err == ERROR_SUCCESS) {
/* Opened a Bindings subkey. For each value under this
* key, the value name indicates the instance being
* bound to, and the value data is empty. So we can
* enum values, ignoring the value data and type and
* just concentrating on the name.
*/
TCHAR szValueName[64]; /* usually "COMPONENT\nnnn" */
UINT iValue = 0;
for (;;) {
DWORD cchValue = ARRAYSIZE(szValueName);
err = RegEnumValue(hkeyInstance, iValue, szValueName,
&cchValue, NULL, NULL, NULL, NULL);
if (err != ERROR_SUCCESS)
break;
/* If this is a binding to our client, delete the
* binding and reset (deleting values while enuming
* can be unpredictable).
*/
if (!strnicmpf(szValueName, "FAMILY\\", 7)) {
RegDeleteValue(hkeyInstance, szValueName);
iValue = 0;
continue;
}
iValue++;
}
RegCloseKey(hkeyInstance);
}
iInstance++;
}
RegCloseKey(hkeyComponent);
}
iComponent++;
}
RegCloseKey(hkey);
}
}