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annotate ui/sslconnection.h @ 508:27bcdee4e4a6

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author Andre Heinecke <aheinecke@intevation.de>
date Mon, 28 Apr 2014 09:22:41 +0000
parents 17e1c8f37d72
children d1c951b3012d
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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 #include <polarssl/entropy.h>
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22 #include <polarssl/net.h>
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23 #include <polarssl/ssl.h>
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24 #include <polarssl/ctr_drbg.h>
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25 #include <polarssl/error.h>
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26 #include <polarssl/certs.h>
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27
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28 class SSLConnection
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29 {
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30 public:
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31 enum ErrorCode {
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32 NoError,
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33 NoConnection,
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34 SSLHandshakeFailed,
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35 InvalidCertificate,
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36 InvalidPinnedCertificate,
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37 InvalidResponse,
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38 ConnectionLost,
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39 Timeout,
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40 ErrUnknown
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41 };
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42
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43 /**
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44 * @brief Construct a pinned SSL Connection
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45 *
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46 * @param[in] url the Url to connect to
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47 * @param[in] certificate optional certificate to validate https connection
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48 */
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49 SSLConnection(const QString& url,
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50 const QByteArray& certificate = QByteArray());
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51
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52 ~SSLConnection();
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53
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54 /** @brief write */
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55 int write(const QByteArray& request);
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56
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57 /**
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58 * @brief read at most len bytes and reset the connection
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59 *
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60 * @param [in] len Amount of bytes to read.
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61 *
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62 * @returns a byte array containing the data or
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63 * a NULL byte array on error*/
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64 QByteArray read(size_t len);
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65
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66 bool initialized() { return mInitialized; }
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67 bool connected() { return mConnected; }
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68
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69 ErrorCode getLastError() { return mErrorState; }
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70
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71 /** @brief: Establish the connection
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72 *
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73 * @returns 0 on success otherwise a polarssl error or -1 is returned
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74 */
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75 int connect();
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76
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77 private:
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78 QUrl mUrl;
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79 QByteArray mPinnedCert;
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80 x509_crt mX509PinnedCert;
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81 entropy_context mEntropy;
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82 ctr_drbg_context mCtr_drbg;
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83 ssl_context mSSL;
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84 ssl_session mSavedSession;
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85 bool mInitialized;
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86 bool mConnected; /* A connection was established */
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87 bool mNeedsReset; /* The connection needs to be reset before the next
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88 write */
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89 int mServerFD;
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90 SSLConnection::ErrorCode mErrorState;
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91 /* @brief: Initialize polarssl structures
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92 *
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93 * This wraps polarssl initialization functions
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94 * that can return an error.
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95 * Sets the error state accordingly.
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96 *
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97 * @returns: 0 on success a polarssl error otherwise.
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98 */
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99 int init();
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100
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101 /* @brief Reset the connection.
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102 *
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103 * Resets the https connection and does another handshake.
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104 *
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105 * @returns: 0 on success a polarssl error or -1 otherwise. */
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106 int reset();
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107
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108 /* @brief validates that the certificate matches the pinned one.
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109 *
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110 * Checks the peer certificate of mSSL and validates that the
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111 * certificate matches mPinnedCertificate.
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112 *
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113 * @returns: 0 on success a polarssl error or -1 otherwise. */
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114 int validateCertificate();
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115
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116 /* @brief disconnects the connection */
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117 void disconnect();
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118 };
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119
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120 #endif
http://wald.intevation.org/projects/trustbridge/