Mercurial > trustbridge > trustbridge

annotate ui/downloader.cpp @ 46:d28e2624c1d5

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Reset connection before the next request. This makes the downloader work for the first simple test.
author Andre Heinecke <aheinecke@intevation.de>
date Mon, 17 Mar 2014 10:51:47 +0000
parents c6125d73faf4
children 09cd242d8443
rev   line source
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1 #include "downloader.h"
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2
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3 #ifndef DOWNLOAD_SERVER
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4 #define DOWNLOAD_SERVER "https://www.intevation.de"
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5 #endif
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6
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7 #include <QFile>
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8 #include <QDir>
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9 #include <QDebug>
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10 #include <QStandardPaths>
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11 #include <QTextStream>
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12 #include <QLocale>
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13 #include <QSaveFile>
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14
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15 #include <polarssl/net.h>
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16 #include <polarssl/ssl.h>
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17 #include <polarssl/entropy.h>
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18 #include <polarssl/ctr_drbg.h>
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19 #include <polarssl/error.h>
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20 #include <polarssl/certs.h>
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21
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22 #define MAX_SW_SIZE 10485760
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23 #define MAX_LIST_SIZE 1048576
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25
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26 Downloader::Downloader(QObject* parent, const QString& url,
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27 const QByteArray& certificate,
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28 const QDateTime& newestSW,
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29 const QDateTime& newestList,
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30 const QString& resourceSW,
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31 const QString& resourceList):
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32 QThread(parent),
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33 mLastModSW(newestSW),
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34 mLastModList(newestList),
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35 mResourceSW(resourceSW),
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36 mResourceList(resourceList),
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37 mSSLConnection(url, certificate)
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38 {
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39 }
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40
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41
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42 Downloader::~Downloader() {
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43 }
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44
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45 QString Downloader::getDataDirectory()
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46 {
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47 QString candidate =
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48 QStandardPaths::writableLocation(QStandardPaths::DataLocation);
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49
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50 if (candidate.isEmpty()) {
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51 qDebug() << "Could not find writeable locaction for me";
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52 return QString();
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53 }
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54
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55 QDir cDir(candidate);
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56
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57 if (!cDir.exists()) {
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58 if (!cDir.mkpath(candidate)) {
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59 qDebug() << "Could not create path to: " << candidate;
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60 return QString();
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61 }
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62 }
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63 return cDir.absolutePath();
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64 }
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65
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66
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67 QDateTime Downloader::getLastModifiedHeader(const QString &resource) {
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68 int ret = -1;
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69 QByteArray response;
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70 QTextStream responseStream(&response);
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71 QLocale cLocale = QLocale::c();
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72 QString headRequest =
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73 QString::fromLatin1("HEAD %1 HTTP/1.0\r\n\r\n").arg(resource);
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74
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75 ret = mSSLConnection.write(headRequest.toUtf8());
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76 if (ret != 0) {
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77 emit error (tr("Connection lost"), SSLConnection::ConnectionLost);
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78 return QDateTime();
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79 }
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80
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81 response = mSSLConnection.read(1024);
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82
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83 if (response.isNull()) {
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84 qDebug() << "No response";
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85 emit error (tr("Connection lost"), SSLConnection::ConnectionLost);
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86 return QDateTime();
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87 }
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88
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89 while (1) {
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90 QString line = responseStream.readLine();
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91 if (line.isNull()) {
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92 break;
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93 }
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94 if (line.startsWith("Last-Modified:")) {
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95 QDateTime candidate = cLocale.toDateTime(line, "'Last-Modified: 'ddd, dd MMM yyyy HH:mm:ss' GMT'");
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96 qDebug() << "Parsed line : " << line << " to " << candidate;
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97 if (candidate.isValid()) {
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98 return candidate;
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99 }
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100 }
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101 }
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102 qDebug() << "Response: " << response;
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103 emit error (tr("Invalid response from the server"), SSLConnection::InvalidResponse);
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104 return QDateTime();
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105 }
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106
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107 bool Downloader::downloadFile(const QString &resource,
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108 const QString &fileName,
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109 size_t maxSize)
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110 {
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111 int ret = -1;
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112 size_t bytesRead = 0;
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113 QString getRequest =
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114 QString::fromLatin1("GET %1 HTTP/1.0\r\n\r\n").arg(resource);
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115
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116 QSaveFile outputFile(fileName);
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117
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118 ret = mSSLConnection.write(getRequest.toUtf8());
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119
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120 // Open / Create the file to write to.
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121 if (!outputFile.open(QIODevice::WriteOnly)) {
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122 qDebug() << "Failed to open file";
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123 return false;
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124 }
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125
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126 if (ret != 0) {
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127 emit error(tr("Connection lost"), SSLConnection::ConnectionLost);
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128 return false;
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129 }
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130
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131 do {
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132 /* Read the response in 8KiB chunks */
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133 QByteArray response = mSSLConnection.read(8192);
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134 if (response.isNull()) {
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135 qDebug() << "Error reading response";
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136 emit error(tr("Connection lost"), SSLConnection::ConnectionLost);
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137 return false;
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138 }
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139 outputFile.write(response);
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140 qDebug() << "Wrote: "<< response.size();
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141 bytesRead += response.size();
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142 if (response.size() < 8192) {
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143 /* Nothing more to read for us */
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144 break;
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145 }
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146 } while (bytesRead < maxSize);
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Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
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147
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Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
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148 return outputFile.commit();
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
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149 }
27
62cd56cea09b Start on polarssl Downloader.
Andre Heinecke <andre.heinecke@intevation.de>
parents: 18
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150
62cd56cea09b Start on polarssl Downloader.
Andre Heinecke <andre.heinecke@intevation.de>
parents: 18
diff changeset
151 void Downloader::run() {
62cd56cea09b Start on polarssl Downloader.
Andre Heinecke <andre.heinecke@intevation.de>
parents: 18
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152 int ret;
32
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
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153 QDateTime remoteModList;
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Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
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154 QDateTime remoteModSW;
27
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Andre Heinecke <andre.heinecke@intevation.de>
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diff changeset
155
45
c6125d73faf4 Move SSLConnection into it's own class
Andre Heinecke <aheinecke@intevation.de>
parents: 35
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156 if (!mSSLConnection.initialized()) {
c6125d73faf4 Move SSLConnection into it's own class
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parents: 35
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157 emit error(tr("Failed to initialize SSL Module."), SSLConnection::ErrUnknown);
27
62cd56cea09b Start on polarssl Downloader.
Andre Heinecke <andre.heinecke@intevation.de>
parents: 18
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158 return;
62cd56cea09b Start on polarssl Downloader.
Andre Heinecke <andre.heinecke@intevation.de>
parents: 18
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159 }
62cd56cea09b Start on polarssl Downloader.
Andre Heinecke <andre.heinecke@intevation.de>
parents: 18
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160
45
c6125d73faf4 Move SSLConnection into it's own class
Andre Heinecke <aheinecke@intevation.de>
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diff changeset
161 ret = mSSLConnection.connect();
32
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
162
27
62cd56cea09b Start on polarssl Downloader.
Andre Heinecke <andre.heinecke@intevation.de>
parents: 18
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163 if (ret != 0) {
45
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Andre Heinecke <aheinecke@intevation.de>
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164 emit error(tr("Failed to connect."),
c6125d73faf4 Move SSLConnection into it's own class
Andre Heinecke <aheinecke@intevation.de>
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165 mSSLConnection.getLastError());
27
62cd56cea09b Start on polarssl Downloader.
Andre Heinecke <andre.heinecke@intevation.de>
parents: 18
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166 return;
62cd56cea09b Start on polarssl Downloader.
Andre Heinecke <andre.heinecke@intevation.de>
parents: 18
diff changeset
167 }
62cd56cea09b Start on polarssl Downloader.
Andre Heinecke <andre.heinecke@intevation.de>
parents: 18
diff changeset
168
62cd56cea09b Start on polarssl Downloader.
Andre Heinecke <andre.heinecke@intevation.de>
parents: 18
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169 emit progress(tr("Connected"), 1, -1);
62cd56cea09b Start on polarssl Downloader.
Andre Heinecke <andre.heinecke@intevation.de>
parents: 18
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170
45
c6125d73faf4 Move SSLConnection into it's own class
Andre Heinecke <aheinecke@intevation.de>
parents: 35
diff changeset
171 remoteModSW = getLastModifiedHeader(mResourceSW);
c6125d73faf4 Move SSLConnection into it's own class
Andre Heinecke <aheinecke@intevation.de>
parents: 35
diff changeset
172 remoteModList = getLastModifiedHeader(mResourceList);
32
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
173
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
174 if (!remoteModSW.isValid() || !remoteModList.isValid()) {
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
175 qDebug() << "Could not read headers";
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
176 return;
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
177 }
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
178
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
179 if (!mLastModSW.isValid() || remoteModSW > mLastModSW) {
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
180 QString dataDirectory = getDataDirectory();
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
181
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Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
182 if (dataDirectory.isEmpty()) {
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
183 qDebug() << "Failed to get data directory";
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
184 return;
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
185 }
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
186
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Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
187 QString fileName = dataDirectory.append("/SW-")
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
188 .append(remoteModSW.toString("yyyymmddHHmmss"))
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
189 .append(".exe");
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
190
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
191 qDebug() << "fileName: " << fileName;
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
192
46
d28e2624c1d5 Reset connection before the next request.
Andre Heinecke <aheinecke@intevation.de>
parents: 45
diff changeset
193 if (!downloadFile(mResourceSW, fileName, MAX_SW_SIZE)) {
32
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
194 return;
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
195 }
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
196
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
197 emit newSoftwareAvailable(fileName, remoteModSW);
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
198 } else if (!mLastModList.isValid() || remoteModList > mLastModList) {
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
199 QString dataDirectory = getDataDirectory();
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
200
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
201 if (dataDirectory.isEmpty()) {
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
202 qDebug() << "Failed to get data directory";
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
203 return;
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
204 }
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
205
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
206 QString fileName = dataDirectory.append("/list-")
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
207 .append(remoteModSW.toString("yyyymmddHHmmss"))
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
208 .append(".txt");
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
209
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
210 qDebug() << "fileName: " << fileName;
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
211
46
d28e2624c1d5 Reset connection before the next request.
Andre Heinecke <aheinecke@intevation.de>
parents: 45
diff changeset
212 if (!downloadFile(mResourceList, fileName, MAX_LIST_SIZE)) {
32
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
213 return;
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
214 }
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
215
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
216 emit newListAvailable(fileName, remoteModList);
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
217 }
27
62cd56cea09b Start on polarssl Downloader.
Andre Heinecke <andre.heinecke@intevation.de>
parents: 18
diff changeset
218
62cd56cea09b Start on polarssl Downloader.
Andre Heinecke <andre.heinecke@intevation.de>
parents: 18
diff changeset
219 emit progress(tr("Closing"), 1, -1);
62cd56cea09b Start on polarssl Downloader.
Andre Heinecke <andre.heinecke@intevation.de>
parents: 18
diff changeset
220 }
http://wald.intevation.org/projects/trustbridge/