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annotate ui/downloader.cpp @ 438:8f50533027af

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author Andre Heinecke <aheinecke@intevation.de>
date Tue, 22 Apr 2014 13:00:15 +0000
parents 17e1c8f37d72
children d2f4e28b5a13
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 #include "downloader.h"
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9
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10 #ifndef DOWNLOAD_SERVER
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11 #define DOWNLOAD_SERVER "https://www.intevation.de"
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12 #endif
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13
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14 #include <QFile>
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15 #include <QDir>
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16 #include <QDebug>
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17 #include <QStandardPaths>
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18 #include <QLocale>
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19 #include <QSaveFile>
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20
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21 #include <polarssl/net.h>
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22 #include <polarssl/ssl.h>
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23 #include <polarssl/entropy.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 #define MAX_SW_SIZE 10485760
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29 #define MAX_LIST_SIZE 1048576
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30
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31
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32 Downloader::Downloader(QObject* parent, const QString& url,
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33 const QByteArray& certificate,
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34 const QDateTime& newestSW,
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35 const QDateTime& newestList,
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36 const QString& resourceSW,
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37 const QString& resourceList):
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38 QThread(parent),
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39 mLastModSW(newestSW),
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40 mLastModList(newestList),
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41 mResourceSW(resourceSW),
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42 mResourceList(resourceList),
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43 mSSLConnection(url, certificate)
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44 {
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45 }
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46
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47
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48 Downloader::~Downloader() {
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49 }
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50
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51 QString Downloader::getDataDirectory()
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52 {
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53 QString candidate =
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54 QStandardPaths::writableLocation(QStandardPaths::DataLocation);
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55
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56 if (candidate.isEmpty()) {
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57 qDebug() << "Could not find writeable locaction for me";
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58 return QString();
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59 }
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60
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61 QDir cDir(candidate);
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62
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63 if (!cDir.exists()) {
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64 if (!cDir.mkpath(candidate)) {
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65 qDebug() << "Could not create path to: " << candidate;
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66 return QString();
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67 }
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68 }
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69 return cDir.absolutePath();
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70 }
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71
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72 QMap<QString, QString> Downloader::parseHeaders(QByteArray *data)
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73 {
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74 int bodyStart = data->indexOf("\r\n\r\n");
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75 QMap<QString, QString> retval;
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76 QByteArray headers;
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77 QString response(*data);
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78 if (bodyStart == -1) {
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79 qDebug() << "Could not find header end.";
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80 emit error(tr("Invalid response"),
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81 SSLConnection::InvalidResponse);
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82 return retval;
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83 }
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84
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85 /* Take the headers with one additional line break */
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86 headers = data->left(bodyStart + 2);
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87 /* Chop off the head */
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88
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89 foreach (const QString& line, response.split("\r\n")) {
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90 int sepPos = -1;
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91 sepPos = line.indexOf(": ");
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92 if (sepPos == -1) {
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93 continue;
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94 }
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95 QString key = line.left(sepPos);
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96 QString value = line.right(line.size() - sepPos - 2);
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97
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98 retval.insert(key, value);
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99 }
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100
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101 *data = data->right(data->size() - bodyStart - 4);
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102 return retval;
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103 }
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104
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105 QDateTime Downloader::getLastModifiedHeader(const QString &resource) {
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106 int ret = -1;
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107 QByteArray response;
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108 QLocale cLocale = QLocale::c();
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109 QMap<QString, QString> headers;
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110 QString headRequest =
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111 QString::fromLatin1("HEAD %1 HTTP/1.0\r\n\r\n").arg(resource);
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112
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113 ret = mSSLConnection.write(headRequest.toUtf8());
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114 if (ret != 0) {
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115 emit error (tr("Connection lost"), SSLConnection::ConnectionLost);
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116 return QDateTime();
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117 }
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118
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119 response = mSSLConnection.read(1024);
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120
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121 if (response.isNull()) {
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122 qDebug() << "No response";
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123 emit error (tr("Connection lost"), SSLConnection::ConnectionLost);
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124 return QDateTime();
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125 }
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126
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127 headers = parseHeaders(&response);
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128 const QString lastModified = headers.value("Last-Modified");
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129 qDebug() << "Headers: " << headers;
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130 if (!lastModified.isEmpty()) {
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131 QDateTime candidate = cLocale.toDateTime(lastModified,
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132 "ddd, dd MMM yyyy HH:mm:ss' GMT'");
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133 if (candidate.isValid()) {
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134 return candidate;
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135 }
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136 }
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137 emit error (tr("Invalid response from the server"), SSLConnection::InvalidResponse);
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138 qDebug() << "Response from server was: " << response;
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139 return QDateTime();
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140 }
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141
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142 bool Downloader::downloadFile(const QString &resource,
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143 const QString &fileName,
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144 size_t maxSize)
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145 {
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146 int ret = -1;
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
147 size_t bytesRead = 0;
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
148 QString getRequest =
46
d28e2624c1d5 Reset connection before the next request.
Andre Heinecke <aheinecke@intevation.de>
parents: 45
diff changeset
149 QString::fromLatin1("GET %1 HTTP/1.0\r\n\r\n").arg(resource);
32
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
150
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
151 QSaveFile outputFile(fileName);
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
152
45
c6125d73faf4 Move SSLConnection into it's own class
Andre Heinecke <aheinecke@intevation.de>
parents: 35
diff changeset
153 ret = mSSLConnection.write(getRequest.toUtf8());
32
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
154
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
155 // Open / Create the file to write to.
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
156 if (!outputFile.open(QIODevice::WriteOnly)) {
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
157 qDebug() << "Failed to open file";
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
158 return false;
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
159 }
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
160
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
161 if (ret != 0) {
45
c6125d73faf4 Move SSLConnection into it's own class
Andre Heinecke <aheinecke@intevation.de>
parents: 35
diff changeset
162 emit error(tr("Connection lost"), SSLConnection::ConnectionLost);
32
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
163 return false;
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
164 }
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
165
54
09cd242d8443 Split out Header parsing into it's own function
Andre Heinecke <aheinecke@intevation.de>
parents: 46
diff changeset
166 bool inBody = false;
09cd242d8443 Split out Header parsing into it's own function
Andre Heinecke <aheinecke@intevation.de>
parents: 46
diff changeset
167 QMap <QString, QString> headers;
32
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
168 do {
46
d28e2624c1d5 Reset connection before the next request.
Andre Heinecke <aheinecke@intevation.de>
parents: 45
diff changeset
169 /* 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
170 int responseSize = 0;
45
c6125d73faf4 Move SSLConnection into it's own class
Andre Heinecke <aheinecke@intevation.de>
parents: 35
diff changeset
171 QByteArray response = mSSLConnection.read(8192);
32
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
172 if (response.isNull()) {
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
173 qDebug() << "Error reading response";
45
c6125d73faf4 Move SSLConnection into it's own class
Andre Heinecke <aheinecke@intevation.de>
parents: 35
diff changeset
174 emit error(tr("Connection lost"), SSLConnection::ConnectionLost);
32
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
175 return false;
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
176 }
54
09cd242d8443 Split out Header parsing into it's own function
Andre Heinecke <aheinecke@intevation.de>
parents: 46
diff changeset
177 responseSize = response.size();
09cd242d8443 Split out Header parsing into it's own function
Andre Heinecke <aheinecke@intevation.de>
parents: 46
diff changeset
178 if (!inBody) {
09cd242d8443 Split out Header parsing into it's own function
Andre Heinecke <aheinecke@intevation.de>
parents: 46
diff changeset
179 headers = parseHeaders(&response);
09cd242d8443 Split out Header parsing into it's own function
Andre Heinecke <aheinecke@intevation.de>
parents: 46
diff changeset
180 inBody = true;
09cd242d8443 Split out Header parsing into it's own function
Andre Heinecke <aheinecke@intevation.de>
parents: 46
diff changeset
181 }
46
d28e2624c1d5 Reset connection before the next request.
Andre Heinecke <aheinecke@intevation.de>
parents: 45
diff changeset
182 outputFile.write(response);
54
09cd242d8443 Split out Header parsing into it's own function
Andre Heinecke <aheinecke@intevation.de>
parents: 46
diff changeset
183 bytesRead += responseSize;
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Andre Heinecke <aheinecke@intevation.de>
parents: 46
diff changeset
184 if (responseSize < 8192) {
09cd242d8443 Split out Header parsing into it's own function
Andre Heinecke <aheinecke@intevation.de>
parents: 46
diff changeset
185 /* Nothing more to read */
32
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
186 break;
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
187 }
54
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parents: 46
diff changeset
188 /* TODO Emit progress */
32
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Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
189 } while (bytesRead < maxSize);
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
190
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Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
191 return outputFile.commit();
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
192 }
27
62cd56cea09b Start on polarssl Downloader.
Andre Heinecke <andre.heinecke@intevation.de>
parents: 18
diff changeset
193
62cd56cea09b Start on polarssl Downloader.
Andre Heinecke <andre.heinecke@intevation.de>
parents: 18
diff changeset
194 void Downloader::run() {
62cd56cea09b Start on polarssl Downloader.
Andre Heinecke <andre.heinecke@intevation.de>
parents: 18
diff changeset
195 int ret;
32
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
196 QDateTime remoteModList;
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Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
197 QDateTime remoteModSW;
27
62cd56cea09b Start on polarssl Downloader.
Andre Heinecke <andre.heinecke@intevation.de>
parents: 18
diff changeset
198
45
c6125d73faf4 Move SSLConnection into it's own class
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parents: 35
diff changeset
199 if (!mSSLConnection.initialized()) {
c6125d73faf4 Move SSLConnection into it's own class
Andre Heinecke <aheinecke@intevation.de>
parents: 35
diff changeset
200 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
201 return;
62cd56cea09b Start on polarssl Downloader.
Andre Heinecke <andre.heinecke@intevation.de>
parents: 18
diff changeset
202 }
62cd56cea09b Start on polarssl Downloader.
Andre Heinecke <andre.heinecke@intevation.de>
parents: 18
diff changeset
203
45
c6125d73faf4 Move SSLConnection into it's own class
Andre Heinecke <aheinecke@intevation.de>
parents: 35
diff changeset
204 ret = mSSLConnection.connect();
32
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
205
27
62cd56cea09b Start on polarssl Downloader.
Andre Heinecke <andre.heinecke@intevation.de>
parents: 18
diff changeset
206 if (ret != 0) {
45
c6125d73faf4 Move SSLConnection into it's own class
Andre Heinecke <aheinecke@intevation.de>
parents: 35
diff changeset
207 emit error(tr("Failed to connect."),
c6125d73faf4 Move SSLConnection into it's own class
Andre Heinecke <aheinecke@intevation.de>
parents: 35
diff changeset
208 mSSLConnection.getLastError());
27
62cd56cea09b Start on polarssl Downloader.
Andre Heinecke <andre.heinecke@intevation.de>
parents: 18
diff changeset
209 return;
62cd56cea09b Start on polarssl Downloader.
Andre Heinecke <andre.heinecke@intevation.de>
parents: 18
diff changeset
210 }
62cd56cea09b Start on polarssl Downloader.
Andre Heinecke <andre.heinecke@intevation.de>
parents: 18
diff changeset
211
62cd56cea09b Start on polarssl Downloader.
Andre Heinecke <andre.heinecke@intevation.de>
parents: 18
diff changeset
212 emit progress(tr("Connected"), 1, -1);
62cd56cea09b Start on polarssl Downloader.
Andre Heinecke <andre.heinecke@intevation.de>
parents: 18
diff changeset
213
45
c6125d73faf4 Move SSLConnection into it's own class
Andre Heinecke <aheinecke@intevation.de>
parents: 35
diff changeset
214 remoteModSW = getLastModifiedHeader(mResourceSW);
c6125d73faf4 Move SSLConnection into it's own class
Andre Heinecke <aheinecke@intevation.de>
parents: 35
diff changeset
215 remoteModList = getLastModifiedHeader(mResourceList);
32
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
216
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
217 if (!remoteModSW.isValid() || !remoteModList.isValid()) {
72
7e304573ebd1 Add some testing hacks for interactive testing
Andre Heinecke <aheinecke@intevation.de>
parents: 54
diff changeset
218 qDebug() << "Could not parse headers";
32
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
219 return;
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
220 }
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 if (!mLastModSW.isValid() || remoteModSW > mLastModSW) {
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
223 QString dataDirectory = getDataDirectory();
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
224
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
225 if (dataDirectory.isEmpty()) {
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
226 qDebug() << "Failed to get data directory";
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
227 return;
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
228 }
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
229
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
230 QString fileName = dataDirectory.append("/SW-")
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
231 .append(remoteModSW.toString("yyyymmddHHmmss"))
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
232 .append(".exe");
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
233
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
234 qDebug() << "fileName: " << fileName;
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
235
46
d28e2624c1d5 Reset connection before the next request.
Andre Heinecke <aheinecke@intevation.de>
parents: 45
diff changeset
236 if (!downloadFile(mResourceSW, fileName, MAX_SW_SIZE)) {
32
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
237 return;
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
238 }
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
239
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
240 emit newSoftwareAvailable(fileName, remoteModSW);
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
241 } else if (!mLastModList.isValid() || remoteModList > mLastModList) {
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
242 QString dataDirectory = getDataDirectory();
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
243
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
244 if (dataDirectory.isEmpty()) {
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
245 qDebug() << "Failed to get data directory";
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
246 return;
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
247 }
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
248
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
249 QString fileName = dataDirectory.append("/list-")
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
250 .append(remoteModSW.toString("yyyymmddHHmmss"))
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
251 .append(".txt");
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
252
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
253 qDebug() << "fileName: " << fileName;
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
254
46
d28e2624c1d5 Reset connection before the next request.
Andre Heinecke <aheinecke@intevation.de>
parents: 45
diff changeset
255 if (!downloadFile(mResourceList, fileName, MAX_LIST_SIZE)) {
32
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
256 return;
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
257 }
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
258
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
259 emit newListAvailable(fileName, remoteModList);
d8e93fa1fc93 Downloader logic
Andre Heinecke <andre.heinecke@intevation.de>
parents: 27
diff changeset
260 }
27
62cd56cea09b Start on polarssl Downloader.
Andre Heinecke <andre.heinecke@intevation.de>
parents: 18
diff changeset
261
62cd56cea09b Start on polarssl Downloader.
Andre Heinecke <andre.heinecke@intevation.de>
parents: 18
diff changeset
262 emit progress(tr("Closing"), 1, -1);
62cd56cea09b Start on polarssl Downloader.
Andre Heinecke <andre.heinecke@intevation.de>
parents: 18
diff changeset
263 }
http://wald.intevation.org/projects/trustbridge/