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annotate ui/downloader.cpp @ 231:c342b93c5bd1

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Refactoring.
author Sascha Wilde <wilde@intevation.de>
date Fri, 28 Mar 2014 10:45:55 +0100
parents 63b79d135631
children 17e1c8f37d72
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 <QLocale>
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12 #include <QSaveFile>
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13
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14 #include <polarssl/net.h>
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15 #include <polarssl/ssl.h>
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16 #include <polarssl/entropy.h>
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17 #include <polarssl/ctr_drbg.h>
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18 #include <polarssl/error.h>
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19 #include <polarssl/certs.h>
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20
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21 #define MAX_SW_SIZE 10485760
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22 #define MAX_LIST_SIZE 1048576
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23
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24
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25 Downloader::Downloader(QObject* parent, const QString& url,
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26 const QByteArray& certificate,
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27 const QDateTime& newestSW,
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28 const QDateTime& newestList,
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29 const QString& resourceSW,
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30 const QString& resourceList):
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31 QThread(parent),
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32 mLastModSW(newestSW),
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33 mLastModList(newestList),
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34 mResourceSW(resourceSW),
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35 mResourceList(resourceList),
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36 mSSLConnection(url, certificate)
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37 {
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38 }
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39
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40
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41 Downloader::~Downloader() {
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42 }
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43
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44 QString Downloader::getDataDirectory()
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45 {
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46 QString candidate =
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47 QStandardPaths::writableLocation(QStandardPaths::DataLocation);
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48
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49 if (candidate.isEmpty()) {
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50 qDebug() << "Could not find writeable locaction for me";
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51 return QString();
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52 }
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53
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54 QDir cDir(candidate);
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55
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56 if (!cDir.exists()) {
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57 if (!cDir.mkpath(candidate)) {
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58 qDebug() << "Could not create path to: " << candidate;
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59 return QString();
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60 }
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61 }
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62 return cDir.absolutePath();
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63 }
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64
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65 QMap<QString, QString> Downloader::parseHeaders(QByteArray *data)
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66 {
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67 int bodyStart = data->indexOf("\r\n\r\n");
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68 QMap<QString, QString> retval;
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69 QByteArray headers;
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70 QString response(*data);
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71 if (bodyStart == -1) {
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72 qDebug() << "Could not find header end.";
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73 emit error(tr("Invalid response"),
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74 SSLConnection::InvalidResponse);
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75 return retval;
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76 }
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77
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78 /* Take the headers with one additional line break */
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79 headers = data->left(bodyStart + 2);
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80 /* Chop off the head */
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81
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82 foreach (const QString& line, response.split("\r\n")) {
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83 int sepPos = -1;
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84 sepPos = line.indexOf(": ");
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85 if (sepPos == -1) {
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86 continue;
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87 }
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88 QString key = line.left(sepPos);
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89 QString value = line.right(line.size() - sepPos - 2);
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90
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91 retval.insert(key, value);
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92 }
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93
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94 *data = data->right(data->size() - bodyStart - 4);
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95 return retval;
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96 }
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97
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98 QDateTime Downloader::getLastModifiedHeader(const QString &resource) {
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99 int ret = -1;
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100 QByteArray response;
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101 QLocale cLocale = QLocale::c();
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102 QMap<QString, QString> headers;
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103 QString headRequest =
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104 QString::fromLatin1("HEAD %1 HTTP/1.0\r\n\r\n").arg(resource);
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105
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106 ret = mSSLConnection.write(headRequest.toUtf8());
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107 if (ret != 0) {
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108 emit error (tr("Connection lost"), SSLConnection::ConnectionLost);
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109 return QDateTime();
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110 }
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111
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112 response = mSSLConnection.read(1024);
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113
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114 if (response.isNull()) {
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115 qDebug() << "No response";
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116 emit error (tr("Connection lost"), SSLConnection::ConnectionLost);
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117 return QDateTime();
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118 }
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119
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120 headers = parseHeaders(&response);
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121 const QString lastModified = headers.value("Last-Modified");
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122 qDebug() << "Headers: " << headers;
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123 if (!lastModified.isEmpty()) {
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124 QDateTime candidate = cLocale.toDateTime(lastModified,
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125 "ddd, dd MMM yyyy HH:mm:ss' GMT'");
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126 if (candidate.isValid()) {
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127 return candidate;
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128 }
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129 }
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130 emit error (tr("Invalid response from the server"), SSLConnection::InvalidResponse);
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131 qDebug() << "Response from server was: " << response;
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132 return QDateTime();
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133 }
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134
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135 bool Downloader::downloadFile(const QString &resource,
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136 const QString &fileName,
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137 size_t maxSize)
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138 {
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139 int ret = -1;
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140 size_t bytesRead = 0;
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141 QString getRequest =
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142 QString::fromLatin1("GET %1 HTTP/1.0\r\n\r\n").arg(resource);
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143
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144 QSaveFile outputFile(fileName);
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145
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Andre Heinecke <aheinecke@intevation.de>
parents: 35
diff changeset
146 ret = mSSLConnection.write(getRequest.toUtf8());
32
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
147
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
148 // Open / Create the file to write to.
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
149 if (!outputFile.open(QIODevice::WriteOnly)) {
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
150 qDebug() << "Failed to open file";
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
151 return false;
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
152 }
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
153
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
154 if (ret != 0) {
45
c6125d73faf4 Move SSLConnection into it's own class
Andre Heinecke <aheinecke@intevation.de>
parents: 35
diff changeset
155 emit error(tr("Connection lost"), SSLConnection::ConnectionLost);
32
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
156 return false;
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
157 }
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
158
54
09cd242d8443 Split out Header parsing into it's own function
Andre Heinecke <aheinecke@intevation.de>
parents: 46
diff changeset
159 bool inBody = false;
09cd242d8443 Split out Header parsing into it's own function
Andre Heinecke <aheinecke@intevation.de>
parents: 46
diff changeset
160 QMap <QString, QString> headers;
32
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
161 do {
46
d28e2624c1d5 Reset connection before the next request.
Andre Heinecke <aheinecke@intevation.de>
parents: 45
diff changeset
162 /* Read the response in 8KiB chunks */
54
09cd242d8443 Split out Header parsing into it's own function
Andre Heinecke <aheinecke@intevation.de>
parents: 46
diff changeset
163 int responseSize = 0;
45
c6125d73faf4 Move SSLConnection into it's own class
Andre Heinecke <aheinecke@intevation.de>
parents: 35
diff changeset
164 QByteArray response = mSSLConnection.read(8192);
32
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
165 if (response.isNull()) {
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
166 qDebug() << "Error reading response";
45
c6125d73faf4 Move SSLConnection into it's own class
Andre Heinecke <aheinecke@intevation.de>
parents: 35
diff changeset
167 emit error(tr("Connection lost"), SSLConnection::ConnectionLost);
32
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
168 return false;
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
169 }
54
09cd242d8443 Split out Header parsing into it's own function
Andre Heinecke <aheinecke@intevation.de>
parents: 46
diff changeset
170 responseSize = response.size();
09cd242d8443 Split out Header parsing into it's own function
Andre Heinecke <aheinecke@intevation.de>
parents: 46
diff changeset
171 if (!inBody) {
09cd242d8443 Split out Header parsing into it's own function
Andre Heinecke <aheinecke@intevation.de>
parents: 46
diff changeset
172 headers = parseHeaders(&response);
09cd242d8443 Split out Header parsing into it's own function
Andre Heinecke <aheinecke@intevation.de>
parents: 46
diff changeset
173 inBody = true;
09cd242d8443 Split out Header parsing into it's own function
Andre Heinecke <aheinecke@intevation.de>
parents: 46
diff changeset
174 }
46
d28e2624c1d5 Reset connection before the next request.
Andre Heinecke <aheinecke@intevation.de>
parents: 45
diff changeset
175 outputFile.write(response);
54
09cd242d8443 Split out Header parsing into it's own function
Andre Heinecke <aheinecke@intevation.de>
parents: 46
diff changeset
176 bytesRead += responseSize;
09cd242d8443 Split out Header parsing into it's own function
Andre Heinecke <aheinecke@intevation.de>
parents: 46
diff changeset
177 if (responseSize < 8192) {
09cd242d8443 Split out Header parsing into it's own function
Andre Heinecke <aheinecke@intevation.de>
parents: 46
diff changeset
178 /* Nothing more to read */
32
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
179 break;
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
180 }
54
09cd242d8443 Split out Header parsing into it's own function
Andre Heinecke <aheinecke@intevation.de>
parents: 46
diff changeset
181 /* TODO Emit progress */
32
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
182 } while (bytesRead < maxSize);
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
183
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
184 return outputFile.commit();
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
185 }
27
62cd56cea09b Start on polarssl Downloader.
Andre Heinecke <andre.heinecke@intevation.de>
parents: 18
diff changeset
186
62cd56cea09b Start on polarssl Downloader.
Andre Heinecke <andre.heinecke@intevation.de>
parents: 18
diff changeset
187 void Downloader::run() {
62cd56cea09b Start on polarssl Downloader.
Andre Heinecke <andre.heinecke@intevation.de>
parents: 18
diff changeset
188 int ret;
32
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
189 QDateTime remoteModList;
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
190 QDateTime remoteModSW;
27
62cd56cea09b Start on polarssl Downloader.
Andre Heinecke <andre.heinecke@intevation.de>
parents: 18
diff changeset
191
45
c6125d73faf4 Move SSLConnection into it's own class
Andre Heinecke <aheinecke@intevation.de>
parents: 35
diff changeset
192 if (!mSSLConnection.initialized()) {
c6125d73faf4 Move SSLConnection into it's own class
Andre Heinecke <aheinecke@intevation.de>
parents: 35
diff changeset
193 emit error(tr("Failed to initialize SSL Module."), SSLConnection::ErrUnknown);
27
62cd56cea09b Start on polarssl Downloader.
Andre Heinecke <andre.heinecke@intevation.de>
parents: 18
diff changeset
194 return;
62cd56cea09b Start on polarssl Downloader.
Andre Heinecke <andre.heinecke@intevation.de>
parents: 18
diff changeset
195 }
62cd56cea09b Start on polarssl Downloader.
Andre Heinecke <andre.heinecke@intevation.de>
parents: 18
diff changeset
196
45
c6125d73faf4 Move SSLConnection into it's own class
Andre Heinecke <aheinecke@intevation.de>
parents: 35
diff changeset
197 ret = mSSLConnection.connect();
32
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
198
27
62cd56cea09b Start on polarssl Downloader.
Andre Heinecke <andre.heinecke@intevation.de>
parents: 18
diff changeset
199 if (ret != 0) {
45
c6125d73faf4 Move SSLConnection into it's own class
Andre Heinecke <aheinecke@intevation.de>
parents: 35
diff changeset
200 emit error(tr("Failed to connect."),
c6125d73faf4 Move SSLConnection into it's own class
Andre Heinecke <aheinecke@intevation.de>
parents: 35
diff changeset
201 mSSLConnection.getLastError());
27
62cd56cea09b Start on polarssl Downloader.
Andre Heinecke <andre.heinecke@intevation.de>
parents: 18
diff changeset
202 return;
62cd56cea09b Start on polarssl Downloader.
Andre Heinecke <andre.heinecke@intevation.de>
parents: 18
diff changeset
203 }
62cd56cea09b Start on polarssl Downloader.
Andre Heinecke <andre.heinecke@intevation.de>
parents: 18
diff changeset
204
62cd56cea09b Start on polarssl Downloader.
Andre Heinecke <andre.heinecke@intevation.de>
parents: 18
diff changeset
205 emit progress(tr("Connected"), 1, -1);
62cd56cea09b Start on polarssl Downloader.
Andre Heinecke <andre.heinecke@intevation.de>
parents: 18
diff changeset
206
45
c6125d73faf4 Move SSLConnection into it's own class
Andre Heinecke <aheinecke@intevation.de>
parents: 35
diff changeset
207 remoteModSW = getLastModifiedHeader(mResourceSW);
c6125d73faf4 Move SSLConnection into it's own class
Andre Heinecke <aheinecke@intevation.de>
parents: 35
diff changeset
208 remoteModList = getLastModifiedHeader(mResourceList);
32
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 if (!remoteModSW.isValid() || !remoteModList.isValid()) {
72
7e304573ebd1 Add some testing hacks for interactive testing
Andre Heinecke <aheinecke@intevation.de>
parents: 54
diff changeset
211 qDebug() << "Could not parse headers";
32
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
212 return;
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
213 }
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 if (!mLastModSW.isValid() || remoteModSW > mLastModSW) {
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
216 QString dataDirectory = getDataDirectory();
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
217
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
218 if (dataDirectory.isEmpty()) {
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
219 qDebug() << "Failed to get data directory";
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
220 return;
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
221 }
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
222
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
223 QString fileName = dataDirectory.append("/SW-")
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
224 .append(remoteModSW.toString("yyyymmddHHmmss"))
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
225 .append(".exe");
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
226
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
227 qDebug() << "fileName: " << fileName;
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
228
46
d28e2624c1d5 Reset connection before the next request.
Andre Heinecke <aheinecke@intevation.de>
parents: 45
diff changeset
229 if (!downloadFile(mResourceSW, fileName, MAX_SW_SIZE)) {
32
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
230 return;
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
231 }
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
232
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
233 emit newSoftwareAvailable(fileName, remoteModSW);
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
234 } else if (!mLastModList.isValid() || remoteModList > mLastModList) {
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
235 QString dataDirectory = getDataDirectory();
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
236
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
237 if (dataDirectory.isEmpty()) {
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
238 qDebug() << "Failed to get data directory";
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
239 return;
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
240 }
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
241
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
242 QString fileName = dataDirectory.append("/list-")
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
243 .append(remoteModSW.toString("yyyymmddHHmmss"))
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
244 .append(".txt");
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
245
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
246 qDebug() << "fileName: " << fileName;
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
247
46
d28e2624c1d5 Reset connection before the next request.
Andre Heinecke <aheinecke@intevation.de>
parents: 45
diff changeset
248 if (!downloadFile(mResourceList, fileName, MAX_LIST_SIZE)) {
32
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
249 return;
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
250 }
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
251
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
252 emit newListAvailable(fileName, remoteModList);
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
253 }
27
62cd56cea09b Start on polarssl Downloader.
Andre Heinecke <andre.heinecke@intevation.de>
parents: 18
diff changeset
254
62cd56cea09b Start on polarssl Downloader.
Andre Heinecke <andre.heinecke@intevation.de>
parents: 18
diff changeset
255 emit progress(tr("Closing"), 1, -1);
62cd56cea09b Start on polarssl Downloader.
Andre Heinecke <andre.heinecke@intevation.de>
parents: 18
diff changeset
256 }
http://wald.intevation.org/projects/trustbridge/