Compile time option USE_CREDENTIAL_STORE

This option enables windows credential store support.

CMakeLists.txt

@@ -13,6 +13,13 @@ include(GNUInstallDirs)
 
 option(BUILD_WITH_QT4 "Build qtkeychain with Qt4 no matter if Qt5 was found" OFF)
 
+if (WIN32)
+    option(USE_CREDENTIAL_STORE "Build with windows CredentialStore support" ON)
+
+    if (USE_CREDENTIAL_STORE)
+	add_definitions(-DUSE_CREDENTIAL_STORE=1)
+    endif()
+endif()
 
 if( NOT BUILD_WITH_QT4 )
     # try Qt5 first, and prefer that if found

keychain_win.cpp

@@ -17,6 +17,82 @@
 
 using namespace QKeychain;
 
+#if defined(USE_CREDENTIAL_STORE)
+#include <wincred.h>
+
+void ReadPasswordJobPrivate::scheduledStart() {
+    std::wstring name = key.toStdWString();
+    //Use settings member if there, create local settings object if not
+    std::auto_ptr<QSettings> local( !q->settings() ? new QSettings( q->service() ) : 0 );
+    PCREDENTIALW cred;
+
+    if (!CredReadW(name.c_str(), CRED_TYPE_GENERIC, 0, &cred)) {
+        Error error;
+        QString msg;
+        switch(GetLastError()) {
+        case ERROR_NOT_FOUND:
+            error = EntryNotFound;
+            msg = tr("Password entry not found");
+            break;
+        default:
+            error = OtherError;
+            msg = tr("Could not decrypt data");
+            break;
+        }
+
+        q->emitFinishedWithError( error, msg );
+        return;
+    }
+
+    data = QByteArray((char*)cred->CredentialBlob, cred->CredentialBlobSize);
+    CredFree(cred);
+
+    q->emitFinished();
+}
+
+void WritePasswordJobPrivate::scheduledStart() {
+    CREDENTIALW cred;
+    char *pwd = data.data();
+    std::wstring name = key.toStdWString();
+
+    memset(&cred, 0, sizeof(cred));
+    cred.Comment = L"QtKeychain";
+    cred.Type = CRED_TYPE_GENERIC;
+    cred.TargetName = (LPWSTR)name.c_str();
+    cred.CredentialBlobSize = data.size();
+    cred.CredentialBlob = (LPBYTE)pwd;
+    cred.Persist = CRED_PERSIST_LOCAL_MACHINE;
+
+    if (!CredWriteW(&cred, 0)) {
+        q->emitFinishedWithError( OtherError, tr("Encryption failed") ); //TODO more details available?
+    } else {
+        q->emitFinished();
+    }
+}
+
+void DeletePasswordJobPrivate::scheduledStart() {
+    std::wstring name = key.toStdWString();
+
+    if (!CredDeleteW(name.c_str(), CRED_TYPE_GENERIC, 0)) {
+        Error error;
+        QString msg;
+        switch(GetLastError()) {
+        case ERROR_NOT_FOUND:
+            error = EntryNotFound;
+            msg = tr("Password entry not found");
+            break;
+        default:
+            error = OtherError;
+            msg = tr("Could not decrypt data");
+            break;
+        }
+
+        q->emitFinishedWithError( error, msg );
+    } else {
+        q->emitFinished();
+    }
+}
+#else
 void ReadPasswordJobPrivate::scheduledStart() {
     //Use settings member if there, create local settings object if not
     std::auto_ptr<QSettings> local( !q->settings() ? new QSettings( q->service() ) : 0 );
@@ -103,3 +179,4 @@ void DeletePasswordJobPrivate::scheduledStart() {
         q->emitFinished();
     }
 }
+#endif