Better device name in Sailfish OS

core/kdeconnectconfig.cpp

@@ -58,6 +58,29 @@ struct KdeConnectConfigPrivate {
 #endif
 };
 
+static QString getDefaultDeviceName() {
+#ifdef SAILFISHOS
+    const QString hwReleaseFile = QStringLiteral("/etc/hw-release");
+    // QSettings will crash if the file does not exist or can be created, like in this case by us in /etc.
+    // E.g. in the SFOS SDK Emulator there is no such file, so check before to protect against the crash.
+    if (QFile::exists(hwReleaseFile)) {
+        QSettings hwRelease(hwReleaseFile, QSettings::IniFormat);
+        auto hwName = hwRelease.value(QStringLiteral("NAME")).toString();
+        if (!hwName.isEmpty()) {
+            return hwName;
+        }
+    }
+#endif
+
+#ifdef Q_OS_WIN
+    QString username = QString::fromLatin1(qgetenv("USERNAME"));
+#else
+    QString username = QString::fromLatin1(qgetenv("USER"));
+#endif
+    return username + QStringLiteral("@") + QHostInfo::localHostName();
+}
+
+
 KdeConnectConfig& KdeConnectConfig::instance()
 {
     static KdeConnectConfig kcc;
@@ -86,19 +109,15 @@ KdeConnectConfig::KdeConnectConfig()
 
     loadPrivateKey();
     loadCertificate();
+
+    if (name().isEmpty()) {
+        setName(getDefaultDeviceName());
+    }
 }
 
 QString KdeConnectConfig::name()
 {
-    QString username;
-    #ifdef Q_OS_WIN
-        username = QString::fromLatin1(qgetenv("USERNAME"));
-    #else
-        username = QString::fromLatin1(qgetenv("USER"));
-    #endif
-    QString defaultName = username + QStringLiteral("@") + QHostInfo::localHostName();
-    QString name = d->m_config->value(QStringLiteral("name"), defaultName).toString();
-    return name;
+    return d->m_config->value(QStringLiteral("name")).toString();
 }
 
 void KdeConnectConfig::setName(const QString& name)