Wrap ExportSecretKey method

CpEpEngine.cpp

@@ -137,6 +137,33 @@ STDMETHODIMP CpEpEngine::ExportKey(BSTR fpr, BSTR * keyData)
     return S_OK;
 }
 
+STDMETHODIMP CpEpEngine::ExportSecretKey(BSTR fpr, BSTR* keyData)
+{
+    assert(fpr);
+    assert(keyData);
+
+    if (!(fpr && keyData))
+        return E_INVALIDARG;
+
+    string _fpr = utf8_string(fpr);
+    char* _key_data = NULL;
+    size_t _size = 0;
+
+    PEP_STATUS status = passphrase_cache.api(::export_secret_key, session(), _fpr.c_str(), &_key_data, &_size);
+    assert(status != ::PEP_OUT_OF_MEMORY);
+    if (status == ::PEP_OUT_OF_MEMORY)
+        return E_OUTOFMEMORY;
+
+    if (status != PEP_STATUS_OK)
+        return FAIL(L"export_secret_key", status);
+
+    _bstr_t b_key_data(utf16_string(_key_data).c_str());
+    pEp_free(_key_data);
+    *keyData = b_key_data.Detach();
+
+    return S_OK;
+}
+
 STDMETHODIMP CpEpEngine::LeaveDeviceGroup()
 {
     PEP_STATUS status = passphrase_cache.api(::leave_device_group, session());

CpEpEngine.h

@@ -176,6 +176,7 @@ public:
     // basic API
 
     STDMETHOD(ExportKey)(BSTR fpr, BSTR * keyData);
+    STDMETHOD(ExportSecretKey)(BSTR fpr, BSTR * keyData);
     STDMETHOD(Log)(BSTR title, BSTR entity, BSTR description, BSTR comment);
     STDMETHOD(Trustwords)(BSTR fpr, BSTR lang, LONG max_words, BSTR * words);
     STDMETHOD(GetTrustwords)(struct pEpIdentity *id1, struct pEpIdentity *id2, BSTR lang, VARIANT_BOOL full, BSTR *words);

pEpCOMServerAdapter.idl

@@ -544,6 +544,9 @@ interface IpEpEngine : IUnknown {
 
     // Shows a notification in the notification tray
     [id(66)] HRESULT ShowNotification([in] BSTR title, [in] BSTR message);
+
+    // Exports a private key
+    [id(67)] HRESULT ExportSecretKey([in] BSTR fpr, [out, retval] BSTR* keyData);
 };
 
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