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NCryptEnumKeys returns ERROR_NO_MORE_ITEMS and is positive error code #1314

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Merged
kristelmerilain merged 1 commit into from
Apr 4, 2025
Merged

NCryptEnumKeys returns ERROR_NO_MORE_ITEMS and is positive error code #1314

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16 changes: 8 additions & 8 deletions client/QCNG.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -30,13 +30,13 @@ using namespace Qt::Literals::StringLiterals;

Q_LOGGING_CATEGORY(CNG, "qdigidoc4.QCNG")

template<typename T, typename D = decltype(NCryptFreeObject)>
template<typename T, auto D = NCryptFreeObject>
struct SCOPE
{
T d {};
~SCOPE() { if(d) D(d); }
constexpr operator T() const { return d; }
constexpr T* operator&() { return &d; }
~SCOPE() noexcept { if(d) D(d); }
constexpr operator T() const noexcept { return d; }
constexpr T* operator&() noexcept { return &d; }
};

class QCNG::Private
Expand Down Expand Up @@ -203,12 +203,12 @@ QList<TokenData> QCNG::tokens() const
SCOPE<NCRYPT_PROV_HANDLE> h;
SECURITY_STATUS err = NCryptOpenStorageProvider(&h, LPCWSTR(provider.utf16()), 0);
NCryptKeyName *keyname{};
PVOID pos {};
SCOPE<PVOID,NCryptFreeBuffer> pos{};
BCRYPT_PSS_PADDING_INFO rsaPSS { NCRYPT_SHA256_ALGORITHM, 32 };
DWORD size {};
while(SUCCEEDED(NCryptEnumKeys(h, reader.isEmpty() ? nullptr : LPCWSTR(scope.utf16()), &keyname, &pos, NCRYPT_SILENT_FLAG)))
while(NCryptEnumKeys(h, reader.isEmpty() ? nullptr : LPCWSTR(scope.utf16()), &keyname, &pos, NCRYPT_SILENT_FLAG) == ERROR_SUCCESS)
{
SCOPE<NCryptKeyName*,decltype(NCryptFreeBuffer)> keyname_scope{keyname};
SCOPE<NCryptKeyName*,NCryptFreeBuffer> keyname_scope{keyname};
SCOPE<NCRYPT_KEY_HANDLE> key;
err = NCryptOpenKey(h, &key, keyname->pszName, keyname->dwLegacyKeySpec, NCRYPT_SILENT_FLAG);
SslCertificate cert(prop(key, NCRYPT_CERTIFICATE_PROPERTY), QSsl::Der);
Expand Down Expand Up @@ -248,7 +248,7 @@ QList<TokenData> QCNG::tokens() const

qCWarning(CNG) << "Start enumerationg providers";
DWORD count {};
SCOPE<NCryptProviderName*,decltype(NCryptFreeBuffer)> providers {};
SCOPE<NCryptProviderName*,NCryptFreeBuffer> providers {};
NCryptEnumStorageProviders(&count, &providers, NCRYPT_SILENT_FLAG);
for(DWORD i {}; i < count; ++i)
{
Expand Down
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