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annotate ui/downloader.h @ 932:57371f2e8dae

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author Andre Heinecke <andre.heinecke@intevation.de>
date Fri, 22 Aug 2014 16:20:25 +0200
parents eaed02defe6a
children 2949f1842955
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1 /* Copyright (C) 2014 by Bundesamt für Sicherheit in der Informationstechnik
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2 * Software engineering by Intevation GmbH
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3 *
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4 * This file is Free Software under the GNU GPL (v>=2)
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5 * and comes with ABSOLUTELY NO WARRANTY!
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6 * See LICENSE.txt for details.
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7 */
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8 #ifndef DOWNLOADER_H
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9 #define DOWNLOADER_H
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10 /**
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11 * @file downloader.h
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12 * @brief High level API to download necessary data.
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13 *
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14 */
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15
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16 #include <QThread>
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17 #include <QDateTime>
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18 #include <QString>
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19 #include <QByteArray>
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20
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21 #include "sslconnection.h"
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22
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23 class Downloader: public QThread
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24 {
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25 Q_OBJECT
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26
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27 public:
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28 /**
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29 * @brief Construct a downloader with a specific certificate
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30 *
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31 * The downloader will check the last-modified date of the
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32 * certificate list / sw on the server at the specified url
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33 * and download those accordingly. If newestSW or newestList is
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34 * are valid datetimes only files modified after the respective date
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35 * are downloaded.
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36 *
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37 * Downloaded files are placed in QStandardPaths::DataLocation
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38 *
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39 * @param[in] parent the parent object.
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40 * @param[in] url the Url to download data from
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41 * @param[in] certificate optional certificate to validate https connection
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42 * @param[in] newestSW datetime after which software should be downloaded
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43 * @param[in] newestList datetime after which the list should be downloaded
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44 * @param[in] resourceSW the path where the software is to be found
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45 * @param[in] resourceList the path where the list is to be found
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46 */
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47 Downloader(QObject* parent, const QString& url,
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48 const QByteArray& certificate = QByteArray(),
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49 const QDateTime& newestSW = QDateTime(),
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50 const QDateTime& newestList = QDateTime(),
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51 const QString& resourceSW = QString(),
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52 const QString& resourceList = QString(),
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53 bool downloadSW = true);
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54
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55 ~Downloader();
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56
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57 /**
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58 * @brief get the directory where the downloader saves data
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59 *
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60 * If the directory does not exist this function ensures that it
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61 * is created.
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62 *
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63 * @returns The directory in which downloaded files are placed.
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64 **/
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65 QString getDataDirectory();
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66
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67 /**
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68 * @brief get the current error state
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69 *
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70 * @returns The current error state.
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71 **/
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72 SSLConnection::ErrorCode getErrorState();
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73
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74 protected:
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75 void run();
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76
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77 private:
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78 QDateTime mLastModSW;
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79 QDateTime mLastModList;
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80
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81 QString mResourceSW;
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82 QString mResourceList;
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83
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84 bool mDownloadSW;
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85
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86 SSLConnection *mSSLConnection;
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87
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88 Q_SIGNALS:
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89 /**
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90 * @brief software update is available
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91 */
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92 void newSoftwareAvailable(const QString &fileName,
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93 const QDateTime &lastMod);
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94
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95 /**
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96 * @brief new certificate list available
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97 */
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98 void newListAvailable(const QString &fileName, const QDateTime &lastMod);
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99
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100 /**
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101 * @brief Some progress has been made.
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102 *
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103 * @param[out] message: A message to show. Can be empty.
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104 * @param[out] current: Value of current progress.
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105 * @param[out] total: Total value of possible progress
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106 */
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107 void progress(const QString &message, int current, int total);
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108
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109 /**
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110 * @brief An error happened
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111 *
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112 * @param[out] message: A message to show. Can be empty.
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113 * @param[out] errorCode: ErrorCode of this error.
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114 */
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115 void error(const QString &message, SSLConnection::ErrorCode error);
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116
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117 /**
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118 * @brief Found the last modified date for software.
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119 *
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120 * @param[out] date The last modified date.
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121 */
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122 void lastModifiedDate(const QDateTime &date);
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123 };
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124 #endif
http://wald.intevation.org/projects/trustbridge/