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1 | 1 | #include <Network/Downloader.h> |
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2 | 2 | #include <memory> |
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3 | 3 | |
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4 | 4 | #include <QNetworkRequest> |
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5 | 5 | #include <QNetworkReply> |
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6 | 6 | #include <QNetworkAccessManager> |
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7 | 7 | #include <QAuthenticator> |
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8 | 8 | #include <QVariant> |
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9 | 9 | #include <QHash> |
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10 | 10 | #include <QPair> |
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11 | 11 | #include <QCoreApplication> |
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12 | 12 | #include <QReadWriteLock> |
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13 | 13 | |
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14 | 14 | class Downloader::p_Downloader |
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15 | 15 | { |
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16 | 16 | using login_pair=QPair<QString,QString>; |
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17 | 17 | QNetworkAccessManager manager; |
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18 | 18 | QHash<QString,login_pair> auth; |
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19 | 19 | QReadWriteLock pending_requests_lock; |
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20 | 20 | QHash<QUuid,QNetworkReply*> pending_requests; |
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21 | 21 | |
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22 | 22 | QNetworkRequest buildRequest(const QString& url, const QString &user="", const QString &passwd="") |
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23 | 23 | { |
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24 | 24 | QNetworkRequest request; |
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25 | 25 | request.setUrl(QUrl(url)); |
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26 | 26 | request.setRawHeader("User-Agent", "SciQLop 1.0"); |
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27 | 27 | if(user!="" and passwd!="") |
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28 | 28 | { |
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29 | 29 | //might grow quickly since we can have tons of URLs for the same host |
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30 | 30 | auth[url]=login_pair(user,passwd); |
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31 | 31 | QString login = "Basic "+user+":"+passwd; |
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32 | 32 | request.setRawHeader("Authorization",login.toLocal8Bit()); |
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33 | 33 | } |
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34 | 34 | return request; |
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35 | 35 | } |
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36 | 36 | |
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37 | 37 | public: |
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38 | 38 | explicit p_Downloader() |
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39 | 39 | { |
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40 | 40 | |
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41 | 41 | auto login_bambda = [this](QNetworkReply * reply, QAuthenticator * authenticator) |
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42 | 42 | { |
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43 | 43 | if(auth.contains(reply->url().toString())) |
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44 | 44 | { |
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45 | 45 | auto login = auth[reply->url().toString()]; |
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46 | 46 | authenticator->setUser(login.first); |
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47 | 47 | authenticator->setPassword(login.second); |
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48 | 48 | } |
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49 | 49 | }; |
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50 | 50 | |
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51 | 51 | QObject::connect(&manager, &QNetworkAccessManager::authenticationRequired, login_bambda); |
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52 | 52 | } |
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53 | 53 | |
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54 | 54 | Response get(const QString& url, const QString &user="", const QString &passwd="") |
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55 | 55 | { |
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56 | 56 | QNetworkRequest request = buildRequest(url, user, passwd); |
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57 | 57 | QNetworkReply *reply = manager.get(request); |
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58 | 58 | while (!reply->isFinished()) |
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59 | 59 | QCoreApplication::processEvents(); |
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60 | 60 | QVariant status_code = reply->attribute(QNetworkRequest::HttpStatusCodeAttribute); |
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61 | 61 | Response resp = Response(reply->readAll(), status_code.toInt()); |
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62 | 62 | delete reply; |
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63 | if(user!="" and passwd!="") | |
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64 | auth.remove(url); | |
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63 | 65 | return resp; |
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64 | 66 | } |
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65 | 67 | |
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66 | 68 | QUuid getAsync(const QString &url, std::function<void (QUuid ,Response)> callback, const QString &user, const QString &passwd) |
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67 | 69 | { |
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68 | 70 | auto uuid = QUuid::createUuid(); |
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69 | 71 | QNetworkRequest request = buildRequest(url, user, passwd); |
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70 | 72 | QNetworkReply *reply = manager.get(request); |
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71 | auto callback_wrapper = [uuid, callback, this](){ | |
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73 | auto callback_wrapper = [url, uuid, callback, this](){ | |
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72 | 74 | QNetworkReply* reply; |
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73 | 75 | { |
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74 | 76 | QWriteLocker locker(&pending_requests_lock); |
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75 | 77 | reply = pending_requests.take(uuid); |
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76 | 78 | } |
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77 | 79 | QVariant status_code = reply->attribute(QNetworkRequest::HttpStatusCodeAttribute); |
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78 | 80 | Response resp = Response(reply->readAll(), status_code.toInt()); |
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81 | auth.remove(url); | |
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79 | 82 | delete reply; |
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80 | 83 | callback(uuid, resp); |
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81 | 84 | }; |
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82 | 85 | QObject::connect(reply, &QNetworkReply::finished, callback_wrapper); |
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83 | 86 | { |
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84 | 87 | QWriteLocker locker(&pending_requests_lock); |
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85 | 88 | pending_requests[uuid] = reply; |
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86 | 89 | } |
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87 | 90 | return uuid; |
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88 | 91 | } |
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89 | 92 | bool downloadFinished(QUuid uuid) |
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90 | 93 | { |
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91 | 94 | QReadLocker locker(&pending_requests_lock); |
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92 | 95 | if(pending_requests.contains(uuid)) |
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93 | 96 | { |
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94 | 97 | auto req = pending_requests[uuid]; |
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95 | 98 | return req->isFinished(); |
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96 | 99 | } |
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97 | 100 | return true; |
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98 | 101 | } |
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99 | 102 | }; |
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100 | 103 | |
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101 | 104 | Response Downloader::get(const QString &url, const QString &user, const QString &passwd) |
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102 | 105 | { |
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103 | 106 | return Downloader::instance().impl->get(url, user, passwd); |
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104 | 107 | } |
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105 | 108 | |
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106 | 109 | QUuid Downloader::getAsync(const QString &url, std::function<void (QUuid ,Response)> callback, const QString &user, const QString &passwd) |
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107 | 110 | { |
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108 | 111 | return Downloader::instance().impl->getAsync(url, callback, user, passwd); |
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109 | 112 | } |
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110 | 113 | |
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111 | 114 | bool Downloader::downloadFinished(QUuid uuid) |
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112 | 115 | { |
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113 | 116 | return Downloader::instance().impl->downloadFinished(uuid); |
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114 | 117 | } |
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115 | 118 | |
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116 | 119 | Downloader::Downloader() |
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117 | 120 | :impl(spimpl::make_unique_impl<p_Downloader>()) |
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118 | 121 | { |
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119 | 122 | } |
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120 | 123 | |
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