Lomiri
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System.cpp
1/*
2 * Copyright (C) 2018 The UBports project
3 * Copyright (C) 2014-2016 Canonical Ltd.
4 *
5 * This program is free software: you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 3, as published
7 * by the Free Software Foundation.
8 *
9 * This program is distributed in the hope that it will be useful, but
10 * WITHOUT ANY WARRANTY; without even the implied warranties of
11 * MERCHANTABILITY, SATISFACTORY QUALITY, or FITNESS FOR A PARTICULAR
12 * PURPOSE. See the GNU General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License along
15 * with this program. If not, see <http://www.gnu.org/licenses/>.
16 */
17
18#include "System.h"
19
20#include <QDBusPendingCall>
21#include <QDBusMessage>
22#include <QDBusConnection>
23#include <QDBusMetaType>
24#include <QDir>
25#include <QFile>
26#include <QLocale>
27#include <QMap>
28#include <QProcess>
29#include <QDebug>
30#include <QSettings>
31#include <QStringBuilder>
32
33#include <initializer_list>
34
35System::System()
36 : QObject()
37{
38 // Register the argument needed for UpdateActivationEnvironment below
39 qDBusRegisterMetaType<QMap<QString,QString>>();
40
41 if(!wizardEnabled()) {
42 m_fsWatcher.addPath(wizardEnabledPath());
43 }
44 connect(&m_fsWatcher, &QFileSystemWatcher::fileChanged, this, &System::watcherFileChanged);
45}
46
47QString System::wizardEnabledPath()
48{
49 return QDir::home().filePath(QStringLiteral(".config/lomiri/wizard-has-run"));
50}
51
52QString System::currentFrameworkPath()
53{
54 QFileInfo f("/usr/share/click/frameworks/current");
55 return f.canonicalFilePath();
56}
57
58/*
59wizardEnabled and isUpdate logic
60
61if wizard-has-run does NOT exist == is new install
62if wizard-has-run exists but does NOT match current framework == is update
63if wizard-has-run exists but does match current framework == show no wizard
64*/
65
66bool System::wizardPathExists() {
67 return QFile::exists(wizardEnabledPath());
68}
69
70bool System::wizardEnabled() const
71{
72 if (!wizardPathExists()) {
73 return true;
74 }
75 return isUpdate();
76}
77
78QString System::readCurrentFramework()
79{
80 QFile f(currentFrameworkPath());
81 if (!f.open(QFile::ReadOnly | QFile::Text)) return "";
82 QTextStream in(&f);
83 return in.readAll();
84}
85
86QString System::readWizardEnabled()
87{
88 QFile f(wizardEnabledPath());
89 if (!f.open(QFile::ReadOnly | QFile::Text)) return "";
90 QTextStream in(&f);
91 return in.readAll();
92}
93
94QString System::version() const
95{
96 return readCurrentFramework();
97}
98
99bool System::isUpdate() const
100{
101 if (!wizardPathExists()) {
102 return false;
103 }
104
105 return readCurrentFramework() != readWizardEnabled();
106}
107
108void System::setWizardEnabled(bool enabled)
109{
110 if (wizardEnabled() == enabled && !isUpdate())
111 return;
112
113 if (enabled) {
114 QFile::remove(wizardEnabledPath());
115 } else {
116 QDir(wizardEnabledPath()).mkpath(QStringLiteral(".."));
117 if (QFile::exists(wizardEnabledPath())) {
118 QFile::remove(wizardEnabledPath());
119 }
120 // For special cases check if wizardEnabledPath is a folder
121 if (QDir(wizardEnabledPath()).exists()) {
122 QDir(wizardEnabledPath()).removeRecursively();
123 }
124 if (!QFile::copy(currentFrameworkPath(), wizardEnabledPath())) {
125 // Make en empty file if framework does not exist
126 QFile f(wizardEnabledPath());
127 f.open(QFile::WriteOnly);
128 }
129 m_fsWatcher.addPath(wizardEnabledPath());
130 Q_EMIT wizardEnabledChanged();
131 Q_EMIT isUpdateChanged();
132 }
133}
134
135void System::watcherFileChanged()
136{
137 Q_EMIT wizardEnabledChanged();
138 Q_EMIT isUpdateChanged();
139 m_fsWatcher.removePath(wizardEnabledPath());
140}
141
142void System::setSessionVariable(const QString &variable, const QString &value)
143{
144 // We need to update both systemd's and DBus's environment
145 QStringList vars = { variable % QChar('=') % value };
146 QDBusMessage systemdMsg = QDBusMessage::createMethodCall(QStringLiteral("org.freedesktop.systemd1"),
147 QStringLiteral("/org/freedesktop/systemd1"),
148 QStringLiteral("org.freedesktop.systemd1.Manager"),
149 QStringLiteral("SetEnvironment"));
150 systemdMsg << QVariant::fromValue(vars);
151 QDBusConnection::sessionBus().asyncCall(systemdMsg);
152
153 QMap<QString,QString> valueMap;
154 valueMap.insert(variable, value);
155
156 QDBusMessage dbusMsg = QDBusMessage::createMethodCall(QStringLiteral("org.freedesktop.DBus"),
157 QStringLiteral("/org/freedesktop/DBus"),
158 QStringLiteral("org.freedesktop.DBus"),
159 QStringLiteral("UpdateActivationEnvironment"));
160
161 dbusMsg << QVariant::fromValue(valueMap);
162 QDBusConnection::sessionBus().asyncCall(dbusMsg);
163}
164
165void System::restartUnit(const QString &unitName)
166{
167 QDBusMessage systemdMsg = QDBusMessage::createMethodCall(QStringLiteral("org.freedesktop.systemd1"),
168 QStringLiteral("/org/freedesktop/systemd1"),
169 QStringLiteral("org.freedesktop.systemd1.Manager"),
170 QStringLiteral("TryRestartUnit"));
171 systemdMsg << QVariant::fromValue(unitName);
172 systemdMsg << QVariant::fromValue(QStringLiteral("replace"));
173 QDBusConnection::sessionBus().asyncCall(systemdMsg);
174}
175
176void System::updateSessionLocale(const QString &locale)
177{
178 const QString language = locale.split(QStringLiteral("."))[0];
179
180 setSessionVariable(QStringLiteral("LANGUAGE"), language);
181 setSessionVariable(QStringLiteral("LANG"), locale);
182 setSessionVariable(QStringLiteral("LC_ALL"), locale);
183
184 // QLocale caches the default locale on startup, and Qt uses that cached
185 // copy when formatting dates. So manually update it here.
186 QLocale::setDefault(QLocale(locale));
187
188 // Restart bits of the session to pick up new language.
189 const QStringList units {
190 "ayatana-indicators.target",
191 "lomiri-location-service-trust-stored.service",
192 "pulseaudio-trust-stored.service",
193 "sync-monitor.service",
194 "maliit-server.service",
195 "ciborium.service",
196 };
197 for (const QString& unit : units) {
198 restartUnit(unit);
199 }
200}
201
202void System::skipUntilFinishedPage()
203{
204 QSettings settings;
205 settings.setValue(QStringLiteral("Wizard/SkipUntilFinishedPage"), true);
206 settings.sync();
207}
208
209QString System::distroName() const
210{
211#ifdef LOMIRI_DISPLAYED_DISTRO_NAME
212 return QStringLiteral(LOMIRI_DISPLAYED_DISTRO_NAME);
213#else
214 for (const QString &fileName : {
215 QStringLiteral("/etc/os-release"),
216 QStringLiteral("/usr/lib/os-release"),
217 }) {
218 QFile file(fileName);
219 if (!file.open(QIODevice::ReadOnly))
220 continue;
221
222 QTextStream fileIO(&file);
223 QString line;
224
225 while (!(line = fileIO.readLine()).isEmpty()) {
226 if (line.startsWith(QStringLiteral("NAME="))) {
227 line = line.right(line.length() - 5);
228 // Remove quote, quick n' dirty way.
229 line = line.replace("\"", "");
230
231 return line;
232 }
233 }
234 }
235
236 return QStringLiteral("Lomiri");
237#endif
238}