Mercurial > trustbridge
annotate ui/downloader.h @ 657:37ffc8ddb698
Fix merge errors
author | Andre Heinecke <andre.heinecke@intevation.de> |
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date | Wed, 25 Jun 2014 15:31:08 +0200 |
parents | 5834b340c54c |
children | d1c951b3012d |
rev | line source |
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404 | 1 /* Copyright (C) 2014 by Bundesamt für Sicherheit in der Informationstechnik |
2 * Software engineering by Intevation GmbH | |
3 * | |
4 * This file is Free Software under the GNU GPL (v>=2) | |
5 * and comes with ABSOLUTELY NO WARRANTY! | |
6 * See LICENSE.txt for details. | |
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 /** @brief get the last modified header of a resource. |
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89 * |
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90 * Connection should be established beforehand. |
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91 * Modifies the error state. |
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92 * |
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93 * @param[in] resource The resource to check |
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94 * |
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95 * @returns the last modified date or a null datetime in case of errors |
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96 */ |
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97 QDateTime getLastModifiedHeader(const QString &resource); |
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98 |
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99 /** @brief Download resource |
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100 * |
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101 * Download a resource with the established connection. |
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102 * Modifies the error state. |
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103 * |
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104 * @param[in] resource the resource to download |
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105 * @param[in] filename where the file should be saved. |
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106 * @param[in] maxSize maximum amount of bytes to download |
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107 * |
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108 * @returns True if the download was successful. |
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109 */ |
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110 bool downloadFile(const QString &resource, const QString &filename, |
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111 size_t maxSize); |
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112 /** |
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113 * @brief parses the Headers of a repsonse. |
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114 * |
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115 * This removes the headers from the byte array passed as |
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116 * parameter. |
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117 * |
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118 * @param[inout] data: The response to parse. |
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119 * |
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120 * @returns: A map of the header fields. Or an empty map on error. |
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121 */ |
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122 QMap<QString, QString> parseHeaders(QByteArray *data); |
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123 |
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124 Q_SIGNALS: |
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125 /** |
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126 * @brief software update is available |
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127 */ |
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128 void newSoftwareAvailable(const QString &fileName, |
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129 const QDateTime &lastMod); |
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130 |
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131 /** |
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132 * @brief new certificate list available |
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133 */ |
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134 void newListAvailable(const QString &fileName, const QDateTime &lastMod); |
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135 |
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136 /** |
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137 * @brief Some progress has been made. |
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138 * |
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139 * @param[out] message: A message to show. Can be empty. |
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140 * @param[out] current: Value of current progress. |
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141 * @param[out] total: Total value of possible progress |
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142 */ |
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143 void progress(const QString &message, int current, int total); |
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144 |
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145 /** |
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146 * @brief An error happened |
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147 * |
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148 * @param[out] message: A message to show. Can be empty. |
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149 * @param[out] errorCode: ErrorCode of this error. |
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150 */ |
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151 void error(const QString &message, SSLConnection::ErrorCode error); |
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152 |
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153 /** |
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154 * @brief Found the last modified date for software. |
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155 * |
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156 * @param[out] date The last modified date. |
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157 */ |
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158 void lastModifiedDate(const QDateTime &date); |
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159 }; |
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160 #endif |