Refactoring: Changes internal structure of requests and unifies a lot of code. Now all errors are handled the same.

1 files changed, 59 insertions, 0 deletions

diff --git a/src/protocolhandler.hpp b/src/protocolhandler.hpp
new file mode 100644
index 0000000..f4ae9eb
--- /dev/null
+++ b/src/protocolhandler.hpp
@@ -0,0 +1,59 @@
+#ifndef GENERICPROTOCOLCLIENT_HPP
+#define GENERICPROTOCOLCLIENT_HPP
+
+#include <QObject>
+
+#include "cryptoidentity.hpp"
+
+class ProtocolHandler : public QObject
+{
+    Q_OBJECT
+public:
+    enum NetworkError {
+        UnknownError, //!< There was an unhandled network error
+        ProtocolViolation, //!< The server responded with something unexpected and violated the protocol
+        HostNotFound, //!< The host
+        ResourceNotFound, //!< The requested resource was not found on the server
+        BadRequest, //!< Our client misbehaved and did a request the server cannot understand
+        ProxyRequest, //!< We requested to
+        InternalServerError,
+        InvalidClientCertificate,
+        UntrustedHost, //!< We don't know the host, and we don't trust it
+        MistrustedHost, //!< We know the host and it's not the server identity we've seen before
+        Unauthorized, //!< The requested resource could not be accessed.
+        TlsFailure, //!< Unspecified TLS failure
+    };
+public:
+    explicit ProtocolHandler(QObject *parent = nullptr);
+
+    virtual bool supportsScheme(QString const & scheme) const = 0;
+
+    virtual bool startRequest(QUrl const & url) = 0;
+
+    virtual bool isInProgress() const = 0;
+
+    virtual bool cancelRequest() = 0;
+
+    virtual bool enableClientCertificate(CryptoIdentity const & ident);
+    virtual void disableClientCertificate();
+signals:
+    //! We successfully transferred some bytes from the server
+    void requestProgress(qint64 transferred);
+
+    //! The request completed with the given data and mime type
+    void requestComplete(QByteArray const & data, QString const & mime);
+
+    //! Server redirected us to another URL
+    void redirected(QUrl const & uri, bool is_permanent);
+
+    //! The server needs some information from the user to process this query.
+    void inputRequired(QString const & user_query);
+
+    //! There was an error while processing the request
+    void networkError(NetworkError error, QString const & reason);
+
+    //! The server wants us to use a client certificate
+    void certificateRequired(QString const & info);
+};
+
+#endif // GENERICPROTOCOLCLIENT_HPP