WireGuard rework for Linux

client/platforms/linux/linuxdependencies.cpp

@@ -0,0 +1,139 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "linuxdependencies.h"
+
+#include <mntent.h>
+
+#include <QDir>
+#include <QFile>
+#include <QFileInfo>
+#include <QMessageBox>
+#include <QDBusInterface>
+#include <QCoreApplication>
+#include <QProcess>
+
+//#include "dbusclient.h"
+#include "logger.h"
+
+namespace {
+
+Logger logger("LinuxDependencies");
+
+void showAlert(const QString& message) {
+  logger.debug() << "Show alert:" << message;
+
+  QMessageBox alert;
+  alert.setText(message);
+  alert.exec();
+}
+
+bool checkDaemonVersion() {
+  logger.debug() << "Check Daemon Version";
+
+  bool completed = false;
+  bool value = false;
+
+  while (!completed) {
+    QCoreApplication::processEvents();
+  }
+
+  return value;
+}
+
+}  // namespace
+
+// static
+bool LinuxDependencies::checkDependencies() {
+  char* path = getenv("PATH");
+  if (!path) {
+    showAlert("No PATH env found.");
+    return false;
+  }
+
+  if (!checkDaemonVersion()) {
+    showAlert("mozillavpn linuxdaemon needs to be updated or restarted.");
+    return false;
+  }
+
+  return true;
+}
+
+// static
+QString LinuxDependencies::findCgroupPath(const QString& type) {
+  struct mntent entry;
+  char buf[PATH_MAX];
+
+  FILE* fp = fopen("/etc/mtab", "r");
+  if (fp == NULL) {
+    return QString();
+  }
+
+  while (getmntent_r(fp, &entry, buf, sizeof(buf)) != NULL) {
+    if (strcmp(entry.mnt_type, "cgroup") != 0) {
+      continue;
+    }
+    if (hasmntopt(&entry, type.toLocal8Bit().constData()) != NULL) {
+      fclose(fp);
+      return QString(entry.mnt_dir);
+    }
+  }
+  fclose(fp);
+
+  return QString();
+}
+
+// static
+QString LinuxDependencies::findCgroup2Path() {
+  struct mntent entry;
+  char buf[PATH_MAX];
+
+  FILE* fp = fopen("/etc/mtab", "r");
+  if (fp == NULL) {
+    return QString();
+  }
+
+  while (getmntent_r(fp, &entry, buf, sizeof(buf)) != NULL) {
+    if (strcmp(entry.mnt_type, "cgroup2") != 0) {
+      continue;
+    }
+    return QString(entry.mnt_dir);
+  }
+  fclose(fp);
+
+  return QString();
+}
+
+// static
+QString LinuxDependencies::gnomeShellVersion() {
+  QDBusInterface iface("org.gnome.Shell", "/org/gnome/Shell",
+                       "org.gnome.Shell");
+  if (!iface.isValid()) {
+    return QString();
+  }
+
+  QVariant shellVersion = iface.property("ShellVersion");
+  if (!shellVersion.isValid()) {
+    return QString();
+  }
+  return shellVersion.toString();
+}
+
+// static
+QString LinuxDependencies::kdeFrameworkVersion() {
+  QProcess proc;
+  proc.start("kf5-config", QStringList{"--version"}, QIODeviceBase::ReadOnly);
+  if (!proc.waitForFinished()) {
+    return QString();
+  }
+
+  QByteArray result = proc.readAllStandardOutput();
+  for (const QByteArray& line : result.split('\n')) {
+    if (line.startsWith("KDE Frameworks: ")) {
+      return QString::fromUtf8(line.last(line.size() - 16));
+    }
+  }
+
+  return QString();
+}