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annotate ui/sslconnection.h @ 956:879a634d0a40

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(issue41) Add proxy support
author Andre Heinecke <andre.heinecke@intevation.de>
date Wed, 27 Aug 2014 16:31:40 +0200
parents eaed02defe6a
children 2949f1842955
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 SSLCONNECTION_H
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9 #define SSLCONNECTION_H
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10
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11 /**
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12 * @file sslconnection.h
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13 * @brief Qt wrapper around polarssl ssl api
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14 */
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15
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16 #include <QDebug>
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17 #include <QUrl>
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18 #include <QString>
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19 #include <QByteArray>
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20
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21 class SSLConnection
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22 {
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23 public:
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24 enum ErrorCode {
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25 NoError,
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26 NoConnection,
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27 SSLHandshakeFailed,
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28 InvalidCertificate,
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29 InvalidPinnedCertificate,
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30 InvalidResponse,
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31 ConnectionLost,
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32 Timeout,
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33 ErrUnknown
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34 };
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35
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36 /**
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37 * @brief Construct a pinned SSL Connection
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38 *
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39 * @param[in] url the Url to connect to
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40 * @param[in] certificate optional certificate to validate https connection
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41 */
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42 SSLConnection(const QString& url,
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43 const QByteArray& certificate = QByteArray()) :
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44 mUrl(url),
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45 mPinnedCert(certificate),
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46 mInitialized(false),
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47 mConnected(false),
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48 mNeedsReset(false),
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49 mServerFD(-1),
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50 mErrorState(NoError) {};
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51
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52 virtual ~SSLConnection() {};
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53
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54 bool initialized() { return mInitialized; }
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55 bool connected() { return mConnected; }
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56
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57 ErrorCode getLastError() { return mErrorState; }
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58
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59 /** @brief: Establish the connection
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60 *
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61 * @returns 0 on success otherwise an error or -1 is returned
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62 */
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63 virtual int connect() = 0;
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64
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65 /** @brief get the last modified header of a resource.
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66 *
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67 * Connection should be established beforehand.
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68 * Modifies the error state.
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69 *
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70 * @param[in] resource The resource to check
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71 *
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72 * @returns the last modified date or a null datetime in case of errors
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73 */
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74 virtual QDateTime getLastModifiedHeader(const QString &resource) = 0;
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75
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76 /** @brief Download resource
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77 *
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78 * Download a resource with the established connection.
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79 * Modifies the error state.
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80 *
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81 * @param[in] resource the resource to download
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82 * @param[in] filename where the file should be saved.
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83 * @param[in] maxSize maximum amount of bytes to download
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84 *
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85 * @returns True if the download was successful.
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86 */
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87 virtual bool downloadFile(const QString &resource, const QString &filename,
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88 size_t maxSize) = 0;
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89
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90 /** @brief Set a proxy server to use.
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91 *
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92 * @param [in] proxyUrl theo URL of the proxy to use.
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93 */
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94 virtual void setProxy(const QUrl &proxyUrl) {
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95 qWarning() << "Set proxy not supported";
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96 }
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97
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98 protected:
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99 QUrl mUrl;
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100 QByteArray mPinnedCert;
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101 bool mInitialized;
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102 bool mConnected; /* A connection was established */
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103 bool mNeedsReset; /* The connection needs to be reset before the next
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104 write */
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105 int mServerFD;
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106 SSLConnection::ErrorCode mErrorState;
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107 };
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108
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109 #endif
http://wald.intevation.org/projects/trustbridge/