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annotate ui/downloader.h @ 1373:00fcb9c4d16b

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(issue179) Handle SW verify failures and try to redownload the update
author Andre Heinecke <andre.heinecke@intevation.de>
date Mon, 24 Nov 2014 16:46:08 +0100
parents 2a1aa9df8f11
children
rev   line source
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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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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 /** @brief High level API to download necessary data.
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24 *
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25 * The downloader class is the UI interface to the Update server.
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26 * It controls the SSL Connection and checks if updates are available
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27 * and downloads them on demand. Each Downloader object is intended
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28 * to be run only once and controlled mainly by the constructor of
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29 * the object.
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30 */
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31 class Downloader: public QThread
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32 {
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33 Q_OBJECT
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34
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35 public:
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36 /**
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37 * @brief Construct a downloader with a specific certificate
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38 *
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39 * The downloader will check the last-modified date of the
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40 * certificate list / sw on the server at the specified url
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41 * and download those accordingly. If newestSW or newestList is
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42 * are valid datetimes only files modified after the respective date
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43 * are downloaded.
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44 *
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45 * Downloaded files are placed in QStandardPaths::DataLocation
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46 *
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47 * @param[in] parent the parent object.
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48 * @param[in] url the Url to download data from
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49 * @param[in] certificate optional certificate to validate https connection
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50 * @param[in] newestSW datetime after which software should be downloaded
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51 * @param[in] newestList datetime after which the list should be downloaded
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52 * @param[in] resourceSW the path where the software is to be found
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53 * @param[in] resourceList the path where the list is to be found
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54 * @param[in] downloadSW TODO
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55 */
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56 Downloader(QObject* parent, const QString& url,
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57 const QByteArray& certificate = QByteArray(),
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58 const QDateTime& newestSW = QDateTime(),
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59 const QDateTime& newestList = QDateTime(),
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60 const QString& resourceSW = QString(),
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61 const QString& resourceList = QString(),
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62 bool downloadSW = true);
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63
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64 ~Downloader();
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65
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66 /**
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67 * @brief get the directory where the downloader saves data
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68 *
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69 * If the directory does not exist this function ensures that it
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70 * is created.
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71 *
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72 * @returns The directory in which downloaded files are placed.
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73 **/
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74 QString getDataDirectory();
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75
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76 /**
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77 * @brief get the current error state
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78 *
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79 * @returns The current error state.
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80 **/
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81 SSLConnection::ErrorCode getErrorState();
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82
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83
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84 /**
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85 * @brief forward the setCiphersuites call to the sslconnection
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86 *
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87 * see sslconnection.h for details.
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88 */
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89 void setCiphersuites(int suites[]);
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90
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91 protected:
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92 void run();
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93
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94 private:
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95 QDateTime mLastModSW;
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96 QDateTime mLastModList;
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97
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98 QString mResourceSW;
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99 QString mResourceList;
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100
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101 bool mDownloadSW;
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102
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103 SSLConnection *mSSLConnection;
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104
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105 Q_SIGNALS:
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106 /**
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107 * @brief software update is available
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108 */
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109 void newSoftwareAvailable(const QString &fileName,
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110 const QDateTime &lastMod);
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111
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112 /**
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113 * @brief new certificate list available
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114 */
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115 void newListAvailable(const QString &fileName, const QDateTime &lastMod);
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116
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117 /**
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118 * @brief Some progress has been made.
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119 *
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120 * @param[out] message: A message to show. Can be empty.
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121 * @param[out] current: Value of current progress.
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122 * @param[out] total: Total value of possible progress
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123 */
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124 void progress(const QString &message, int current, int total);
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125
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126 /**
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127 * @brief An error happened
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128 *
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129 * @param[out] message: A message to show. Can be empty.
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130 * @param[out] error: ErrorCode of this error.
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131 */
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132 void error(const QString &message, SSLConnection::ErrorCode error);
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133
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134 /**
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135 * @brief Found the last modified date for software.
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136 *
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137 * @param[out] date The last modified date.
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138 */
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139 void lastModifiedDate(const QDateTime &date);
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140 };
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141 #endif
http://wald.intevation.org/projects/trustbridge/