问题描述
我正在尝试在签名选项中为所有本地用户和其他用户(域用户)显示凭据提供程序，但我无法显示.我参考 此处.我对 CSampleprovider.cpp 文件的 _EnumerateCredentials 和 GetCredentialCount 函数进行了以下更改.
I am trying to show credential provider for all local and for other user(Domain users) in signing options but I am not able to. I developed this credential provider taking reference from here. I made following changes in _EnumerateCredentials and GetCredentialCount functions of CSampleprovider.cpp file.
HRESULT GetCredentialCount([out] DWORD* pdwCount,
[out] DWORD* pdwDefault,
[out] BOOL* pbAutoLogonWithDefault)
{
*pdwDefault = CREDENTIAL_PROVIDER_NO_DEFAULT;
*pbAutoLogonWithDefault = FALSE;
if (_fRecreateEnumeratedCredentials)
{
_fRecreateEnumeratedCredentials = false;
_ReleaseEnumeratedCredentials();
_CreateEnumeratedCredentials();
}
DWORD dwUserCount;
HRESULT hr;
if (_pCredProviderUserArray != nullptr) {
hr = _pCredProviderUserArray->GetCount(&dwUserCount);
}
if ((dwUserCount == 0) || (IsOS(OS_DOMAINMEMBER) == 1)) {
dwUserCount += 1;//display additional empty tile
}
*pdwCount = dwUserCount;
return S_OK;
}
_EnumerateCredentials()
HRESULT CSampleProvider::_EnumerateCredentials()
{
HRESULT hr = E_UNEXPECTED;
DWORD dwUserCount;
if (_pCredProviderUserArray != nullptr)
{
//DWORD dwUserCount = 0;
_pCredProviderUserArray->GetCount(&dwUserCount);
if (dwUserCount > 0)
{
//_pCredential = new CSampleCredential*[dwUserCount];
for (DWORD i = 0; i < dwUserCount; i++) {
ICredentialProviderUser* pCredUser;
hr = _pCredProviderUserArray->GetAt(i, &pCredUser);
if (SUCCEEDED(hr))
{
//_pCredential[i] = new(std::nothrow) CSampleCredential();
_pCredential.push_back(new(std::nothrow) CSampleCredential());
if (_pCredential[i] != nullptr)
{
//logfile << "new CSampleCredential()\n";
hr = _pCredential[i]->Initialize(_cpus, s_rgCredProvFieldDescriptors, s_rgFieldStatePairs, pCredUser);
if (FAILED(hr))
{
_pCredential[i]->Release();
_pCredential[i] = nullptr;
}
}
else
{
hr = E_OUTOFMEMORY;
}
pCredUser->Release();
}
}
}
//if you are in a domain or have no users on the list you have to show "Other user tile"
if (DEVELOPING) PrintLn(L"IsOS(OS_DOMAINMEMBER): %d", IsOS(OS_DOMAINMEMBER));
if ((dwUserCount == 0) || (IsOS(OS_DOMAINMEMBER) == 1)) {
if (DEVELOPING) PrintLn(L"Adding empty user tile");
_pCredential.push_back(new(std::nothrow) CSampleCredential());
if (_pCredential[_pCredential.size() - 1] != nullptr) {
hr = _pCredential[_pCredential.size() - 1]->Initialize(_cpus, s_rgCredProvFieldDescriptors, s_rgFieldStatePairs, nullptr);
}
else {
if (DEVELOPING) PrintLn(L"Error adding user: %d", _pCredential.size());
}
}
return hr;
}
}
并且我已将 CSampleCredential 类型的私有标头更改为
And I have changed a private header of type CSampleCredential to
std::vector<CSampleCredential> _pCredentialVector;
// SampleV2CredentialCSampleProvider.h
在 CSampleProvider.h 文件中.
in CSampleProvider.h file.
当我测试我的这个凭据提供程序时，它工作正常，即当没有添加域(没有其他用户)但当添加域(其他用户启用)时，它在登录选项中为所有本地用户显示卡在欢迎壁纸和屏幕上一直闪烁.
When I tested this Credential provider of mine it is working fine i.e it is displaying for all local users in sign in options when no domain is added (No other user) but when domain is added(other user enabled) then I am being stuck at the welcome wallpaper and screen keeps on flickering.
那么，如何在登录选项中为所有本地和域用户(其他用户)显示我的凭据提供程序，并克服闪烁的屏幕.我是这个 VC++ 的新手，请帮帮我.
So, How do I display my Credential provider for all local and domain users (Other user) in sign in options and over come that flickering of screen. I am new to this VC++ please help me out.
推荐答案
当我尝试为所有磁贴(包括其他用户磁贴)启用自定义凭据提供程序时，我在 GetCredentialCount() 方法和 _EnumerateCredentials() 方法在 Microsoft 提供的 Credential provider Sample 中的 SampleProvider.cpp 文件中.我所做的更改是:
While I was trying to enable the custom credential provider to all the tiles including the other user tile I made few changes in GetCredentialCount() method and _EnumerateCredentials() method in SampleProvider.cpp file in Credential provider Sample given by Microsoft. The changes I made are:
HRESULT CServiceProvider::GetCredentialCount(
_Out_ DWORD *pdwCount,
_Out_ DWORD *pdwDefault,
_Out_ BOOL *pbAutoLogonWithDefault){
*pdwDefault = CREDENTIAL_PROVIDER_NO_DEFAULT;
*pbAutoLogonWithDefault = FALSE;
if (_fRecreateEnumeratedCredentials)
{
_fRecreateEnumeratedCredentials = false;
_ReleaseEnumeratedCredentials();
_CreateEnumeratedCredentials();
}
DWORD dwUserCount;
HRESULT hr;
if (_pCredProviderUserArray != nullptr) {
hr = _pCredProviderUserArray->GetCount(&dwUserCount);
}
if ((dwUserCount == 0) || (IsOS(OS_DOMAINMEMBER) == 1)) {
dwUserCount += 1;//display additional empty tile
}
*pdwCount = dwUserCount;
return S_OK;}
HRESULT CServiceProvider::_EnumerateCredentials(){
HRESULT hr = E_UNEXPECTED;
DWORD dwUserCount;
if (_pCredProviderUserArray != nullptr)
{
_pCredProviderUserArray->GetCount(&dwUserCount);
if (dwUserCount > 0)
{
//You need to initialize all the fields in LogonUI for each and every user
for (DWORD i = 0; i < dwUserCount; i++) {
ICredentialProviderUser* pCredUser;
hr = _pCredProviderUserArray->GetAt(i, &pCredUser);
if (SUCCEEDED(hr))
{
_pCredential.push_back(new(std::nothrow) CUserCredential());
if (_pCredential[i] != nullptr)
{
hr = _pCredential[i]->Initialize(_cpus, s_rgCredProvFieldDescriptors, s_rgFieldStatePairs, pCredUser);
if (FAILED(hr))
{
_pCredential[i]->Release();
_pCredential[i] = nullptr;
}
}
else
{
hr = E_OUTOFMEMORY;
}
pCredUser->Release();
}
}
}
//if you are in a domain or have no users on the list you have to show "Other user tile"
if ((dwUserCount == 0) || (IsOS(OS_DOMAINMEMBER) == 1)) {
_pCredential.push_back(new(std::nothrow) CUserCredential());
if (_pCredential[_pCredential.size() - 1] != nullptr) {
hr = _pCredential[_pCredential.size() - 1]->Initialize(_cpus, s_rgCredProvFieldDescriptors, s_rgFieldStatePairs, nullptr);
}
}
return hr;
}
return hr;
}
现在，如您所见，在检查系统是否已连接到域后调用 Initialize() 方法时，我们正在发送 nullptr 作为参数之一，我们需要处理nullptr 在 Initialize() 方法中通过检查 SampleCredential.cpp 文件中的 if 条件.
Now as you see we are sending nullptr as one of the argument while calling Initialize() method after checking if system is connected to domain, we need to handle that nullptr in Initialize() method by checking with if condition in SampleCredential.cpp file.
HRESULT CUserCredential::Initialize(CREDENTIAL_PROVIDER_USAGE_SCENARIO cpus,
_In_ CREDENTIAL_PROVIDER_FIELD_DESCRIPTOR const* rgcpfd,
_In_ FIELD_STATE_PAIR const* rgfsp,
_In_ ICredentialProviderUser* pcpUser){
HRESULT hr = S_OK;
_cpus = cpus;
_nNextScreenID = e_ARSNone;
GUID guidProvider;
LPOLESTR clsid;
if (pcpUser != nullptr) {
pcpUser->GetProviderID(&guidProvider);
StringFromCLSID(guidProvider, &clsid);
CoTaskMemFree(clsid);
_fIsLocalUser = (guidProvider == Identity_LocalUserProvider);
}
else {
_fIsLocalUser = true;//CP V1 or Domain
}
// Copy the field descriptors for each field. This is useful if you want to vary the field
// descriptors based on what Usage scenario the credential was created for.
for (DWORD i = 0; SUCCEEDED(hr) && i < ARRAYSIZE(_rgCredProvFieldDescriptors); i++)
{
_rgFieldStatePairs[i] = rgfsp[i];
hr = FieldDescriptorCopy(rgcpfd[i], &_rgCredProvFieldDescriptors[i]);
}
// Initialize the String value of all the fields.
if (SUCCEEDED(hr))
{
hr = SHStrDupW(L"SomeLable1", &_rgFieldStrings[SFI_LABEL]);
}
if (SUCCEEDED(hr))
{
hr = SHStrDupW(L"SomeLable2", &_rgFieldStrings[SFI_LARGE_TEXT]);
}
if (SUCCEEDED(hr))
{
hr = SHStrDupW(L"", &_rgFieldStrings[SFI_PASSWORD]);
}
if (SUCCEEDED(hr))
{
hr = SHStrDupW(L"Somelabel4", &_rgFieldStrings[SFI_SUBMIT_BUTTON]);
}
hr = S_OK;
if (SUCCEEDED(hr))
{
if (pcpUser != nullptr) {
hr = pcpUser->GetStringValue(PKEY_Identity_QualifiedUserName, &_pszQualifiedUserName);//get username from the LogonUI user object
PWSTR pszUserName1;
pcpUser->GetStringValue(PKEY_Identity_UserName, &pszUserName1);
if (_fIsLocalUser) {
PWSTR pszUserName;
pcpUser->GetStringValue(PKEY_Identity_UserName, &pszUserName);
if (pszUserName != nullptr)
{
wchar_t szString[256];
StringCchPrintf(szString, ARRAYSIZE(szString), L"User Name: %s", pszUserName);
if (DEVELOPING) PrintLn(szString);
hr = SHStrDupW(pszUserName, &_rgFieldStrings[SFI_LARGE_TEXT]);
CoTaskMemFree(pszUserName);
}
else
{
hr = SHStrDupW(L"User Name is NULL", &_rgFieldStrings[SFI_LARGE_TEXT]);
}
}
else {
if (DEVELOPING) PrintLn(L"Domain user, skip SFI_LARGE_TEXT");
}
}
else {
PWSTR connectedDomainName = getNetworkName();
wchar_t szString[256];
StringCchPrintf(szString, ARRAYSIZE(szString), L"Sign in to: %s", connectedDomainName);
hr = SHStrDupW(szString, &_rgFieldStrings[SFI_DOMAIN_NAME_TEXT]);
if (DEVELOPING) PrintLn("Unknown user -> display LoginName");
hr = SHStrDupW(L"", &_pszQualifiedUserName);
_fUserNameVisible = true;
_rgFieldStatePairs[SFI_LOGIN_NAME].cpfs = CPFS_DISPLAY_IN_SELECTED_TILE;//unhide login name
//switch focus to login
_rgFieldStatePairs[SFI_LOGIN_NAME].cpfis = CPFIS_FOCUSED;
_rgFieldStatePairs[SFI_PASSWORD].cpfis = CPFIS_NONE;
//Don't panic!!!
}
}
if (pcpUser != nullptr)
{
hr = pcpUser->GetSid(&_pszUserSid);
}
return hr;}
使用上面的代码，您可以解决闪烁(CP 崩溃)以及为所有用户磁贴启用凭据提供程序.
Using above code you can solve flickering (which is crashing of CP) as well as enable Credential provider for all user tiles.
这篇关于未为所有用户显示凭据提供程序(包括其他用户)的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！