Mercurial > trustbridge
view ui/downloader.h @ 76:63b79d135631
Remove QTextStream usage. The QTextStream usage in this way
caused a segmentation fault on Windows
author | Andre Heinecke <aheinecke@intevation.de> |
---|---|
date | Wed, 19 Mar 2014 16:33:25 +0000 |
parents | 09cd242d8443 |
children | 17e1c8f37d72 |
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#ifndef DOWNLOADER_H #define DOWNLOADER_H /** * @file downloader.h * @brief High level API to download necessary data. * */ #include <QThread> #include <QDateTime> #include <QString> #include <QByteArray> #include "sslconnection.h" class Downloader: public QThread { Q_OBJECT public: /** * @brief Construct a downloader with a specific certificate * * The downloader will check the last-modified date of the * certificate list / sw on the server at the specified url * and download those accordingly. If newestSW or newestList is * are valid datetimes only files modified after the respective date * are downloaded. * * Downloaded files are placed in QStandardPaths::DataLocation * * @param[in] parent the parent object. * @param[in] url the Url to download data from * @param[in] certificate optional certificate to validate https connection * @param[in] newestSW datetime after which software should be downloaded * @param[in] newestList datetime after which the list should be downloaded * @param[in] resourceSW the path where the software is to be found * @param[in] resourceList the path where the list is to be found */ Downloader(QObject* parent, const QString& url, const QByteArray& certificate = QByteArray(), const QDateTime& newestSW = QDateTime(), const QDateTime& newestList = QDateTime(), const QString& resourceSW = QString(), const QString& resourceList = QString()); ~Downloader(); /** * @brief get the directory where the downloader saves data * * If the directory does not exist this function ensures that it * is created. * * @returns The directory in which downloaded files are placed. **/ QString getDataDirectory(); /** * @brief get the current error state * * @returns The current error state. **/ SSLConnection::ErrorCode getErrorState(); protected: void run(); private: QDateTime mLastModSW; QDateTime mLastModList; QString mResourceSW; QString mResourceList; SSLConnection mSSLConnection; /** @brief get the last modified header of a resource. * * Connection should be established beforehand. * Modifies the error state. * * @param[in] resource The resource to check * * @returns the last modified date or a null datetime in case of errors */ QDateTime getLastModifiedHeader(const QString &resource); /** @brief Download resource * * Download a resource with the established connection. * Modifies the error state. * * @param[in] resource the resource to download * @param[in] filename where the file should be saved. * @param[in] maxSize maximum amount of bytes to download * * @returns True if the download was successful. */ bool downloadFile(const QString &resource, const QString &filename, size_t maxSize); /** * @brief parses the Headers of a repsonse. * * This removes the headers from the byte array passed as * parameter. * * @param[inout] data: The response to parse. * * @returns: A map of the header fields. Or an empty map on error. */ QMap<QString, QString> parseHeaders(QByteArray *data); Q_SIGNALS: /** * @brief software update is available */ void newSoftwareAvailable(const QString &fileName, const QDateTime &lastMod); /** * @brief new certificate list available */ void newListAvailable(const QString &fileName, const QDateTime &lastMod); /** * @brief Some progress has been made. * * @param[out] message: A message to show. Can be empty. * @param[out] current: Value of current progress. * @param[out] total: Total value of possible progress */ void progress(const QString &message, int current, int total); /** * @brief An error happened * * @param[out] message: A message to show. Can be empty. * @param[out] errorCode: ErrorCode of this error. */ void error(const QString &message, SSLConnection::ErrorCode error); }; #endif