Add ubuntu drivers backend

src/Application.vala

@@ -79,6 +79,7 @@ public sealed class SettingsDaemon.Application : Gtk.Application {
         base.dbus_register (connection, object_path);
 
         connection.register_object (object_path, new Backends.SystemUpdate ());
+        connection.register_object (object_path, new Backends.UbuntuDrivers ());
 
         return true;
     }

src/Backends/SystemUpdate.vala

@@ -7,20 +7,6 @@
 
 [DBus (name="io.elementary.settings_daemon.SystemUpdate")]
 public class SettingsDaemon.Backends.SystemUpdate : Object {
-    public enum State {
-        UP_TO_DATE,
-        CHECKING,
-        AVAILABLE,
-        DOWNLOADING,
-        RESTART_REQUIRED,
-        ERROR
-    }
-
-    public struct CurrentState {
-        State state;
-        string status;
-    }
-
     public struct UpdateDetails {
         string[] packages;
         int size;
@@ -33,7 +19,7 @@ public class SettingsDaemon.Backends.SystemUpdate : Object {
 
     private static Settings settings = new GLib.Settings ("io.elementary.settings-daemon.system-update");
 
-    private CurrentState current_state;
+    private PkUtils.CurrentState current_state;
     private UpdateDetails update_details;
 
     private Pk.Task task;
@@ -187,7 +173,7 @@ public class SettingsDaemon.Backends.SystemUpdate : Object {
     }
 
     private void progress_callback (Pk.Progress progress, Pk.ProgressType progress_type) {
-        update_state (current_state.state, status_to_title (progress.status));
+        update_state (current_state.state, PkUtils.status_to_title (progress.status));
     }
 
     private void send_error (string message) {
@@ -201,7 +187,7 @@ public class SettingsDaemon.Backends.SystemUpdate : Object {
         update_state (ERROR, message);
     }
 
-    private void update_state (State state, string message = "") {
+    private void update_state (PkUtils.State state, string message = "") {
         current_state = {
             state,
             message
@@ -210,84 +196,7 @@ public class SettingsDaemon.Backends.SystemUpdate : Object {
         state_changed ();
     }
 
-    private unowned string status_to_title (Pk.Status status) {
-        // From https://github.com/elementary/appcenter/blob/master/src/Core/ChangeInformation.vala#L51
-        switch (status) {
-            case Pk.Status.SETUP:
-                return _("Starting");
-            case Pk.Status.WAIT:
-                return _("Waiting");
-            case Pk.Status.RUNNING:
-                return _("Running");
-            case Pk.Status.QUERY:
-                return _("Querying");
-            case Pk.Status.INFO:
-                return _("Getting information");
-            case Pk.Status.REMOVE:
-                return _("Removing packages");
-            case Pk.Status.DOWNLOAD:
-                return _("Downloading");
-            case Pk.Status.REFRESH_CACHE:
-                return _("Refreshing software list");
-            case Pk.Status.UPDATE:
-                return _("Installing updates");
-            case Pk.Status.CLEANUP:
-                return _("Cleaning up packages");
-            case Pk.Status.OBSOLETE:
-                return _("Obsoleting packages");
-            case Pk.Status.DEP_RESOLVE:
-                return _("Resolving dependencies");
-            case Pk.Status.SIG_CHECK:
-                return _("Checking signatures");
-            case Pk.Status.TEST_COMMIT:
-                return _("Testing changes");
-            case Pk.Status.COMMIT:
-                return _("Committing changes");
-            case Pk.Status.REQUEST:
-                return _("Requesting data");
-            case Pk.Status.FINISHED:
-                return _("Finished");
-            case Pk.Status.CANCEL:
-                return _("Cancelling");
-            case Pk.Status.DOWNLOAD_REPOSITORY:
-                return _("Downloading repository information");
-            case Pk.Status.DOWNLOAD_PACKAGELIST:
-                return _("Downloading list of packages");
-            case Pk.Status.DOWNLOAD_FILELIST:
-                return _("Downloading file lists");
-            case Pk.Status.DOWNLOAD_CHANGELOG:
-                return _("Downloading lists of changes");
-            case Pk.Status.DOWNLOAD_GROUP:
-                return _("Downloading groups");
-            case Pk.Status.DOWNLOAD_UPDATEINFO:
-                return _("Downloading update information");
-            case Pk.Status.REPACKAGING:
-                return _("Repackaging files");
-            case Pk.Status.LOADING_CACHE:
-                return _("Loading cache");
-            case Pk.Status.SCAN_APPLICATIONS:
-                return _("Scanning applications");
-            case Pk.Status.GENERATE_PACKAGE_LIST:
-                return _("Generating package lists");
-            case Pk.Status.WAITING_FOR_LOCK:
-                return _("Waiting for package manager lock");
-            case Pk.Status.WAITING_FOR_AUTH:
-                return _("Waiting for authentication");
-            case Pk.Status.SCAN_PROCESS_LIST:
-                return _("Updating running applications");
-            case Pk.Status.CHECK_EXECUTABLE_FILES:
-                return _("Checking applications in use");
-            case Pk.Status.CHECK_LIBRARIES:
-                return _("Checking libraries in use");
-            case Pk.Status.COPY_FILES:
-                return _("Copying files");
-            case Pk.Status.INSTALL:
-            default:
-                return _("Installing");
-        }
-    }
-
-    public async CurrentState get_current_state () throws DBusError, IOError {
+    public async PkUtils.CurrentState get_current_state () throws DBusError, IOError {
         return current_state;
     }
 

src/Backends/UbuntuDrivers.vala

@@ -0,0 +1,229 @@
+/*
+ * Copyright 2023 elementary, Inc. (https://elementary.io)
+ * SPDX-License-Identifier: GPL-3.0-or-later
+ *
+ * Authored by: Leonhard Kargl <leo.kargl@proton.me>
+ */
+
+[DBus (name="io.elementary.settings_daemon.Drivers")]
+public class SettingsDaemon.Backends.UbuntuDrivers : Object {
+    private const string NOTIFICATION_ID = "drivers";
+
+    public signal void state_changed ();
+
+    private PkUtils.CurrentState current_state;
+    private HashTable<string, GenericArray<string>> available_drivers;
+    private HashTable<string, bool> available_drivers_with_installed;
+
+    private Pk.Task task;
+    private GLib.Cancellable cancellable;
+
+    construct {
+        current_state = {
+            UP_TO_DATE,
+            ""
+        };
+
+        available_drivers = new HashTable<string, GenericArray<string>> (str_hash, str_equal);
+        available_drivers_with_installed = new HashTable<string, bool> (str_hash, str_equal);
+
+        task = new Pk.Task ();
+
+        cancellable = new GLib.Cancellable ();
+
+        check_for_drivers.begin (true);
+    }
+
+    private async bool get_drivers_output (Cancellable? cancellable = null, out string? output = null) {
+        output = null;
+        string? drivers_exec_path = Environment.find_program_in_path ("ubuntu-drivers");
+        if (drivers_exec_path == null) {
+            return false;
+        }
+
+        Subprocess command;
+        try {
+            command = new Subprocess (SubprocessFlags.STDOUT_PIPE, drivers_exec_path, "list");
+            yield command.communicate_utf8_async (null, cancellable, out output, null);
+        } catch (Error e) {
+            critical ("Failed to launch ubuntu-drivers: %s", e.message);
+            return false;
+        }
+
+        return command.get_exit_status () == 0;
+    }
+
+    public async void check_for_drivers (bool notify) throws DBusError, IOError {
+        update_state (CHECKING);
+        available_drivers.remove_all ();
+
+        string? command_output;
+        var result = yield get_drivers_output (cancellable, out command_output);
+        if (!result || command_output == null) {
+            update_state (UP_TO_DATE);
+            critical ("Failed to get ubuntu-drivers output");
+            return;
+        }
+
+        string[] tokens = command_output.split ("\n");
+        foreach (unowned string package_name in tokens) {
+            if (package_name.strip () == "") {
+                continue;
+            }
+
+            // Filter out the nvidia server drivers
+            if (package_name.contains ("nvidia") && package_name.contains ("-server")) {
+                continue;
+            }
+
+            // ubuntu-drivers returns lines like the following for dkms packages:
+            // backport-iwlwifi-dkms, (kernel modules provided by backport-iwlwifi-dkms)
+            // nvidia-driver-470, (kernel modules provided by linux-modules-nvidia-470-generic-hwe-20.04)
+            // we want to install both packages if they're different
+
+            string[] parts = package_name.split (",");
+            // Get the driver part (before the comma)
+            string[] package_names = {};
+            package_names += parts[0];
+
+            if (parts.length > 1) {
+                if (parts[1].contains ("kernel modules provided by")) {
+                    string[] kernel_module_parts = parts[1].split (" ");
+                    // Get the remainder of the string after the last space
+                    var last_part = kernel_module_parts[kernel_module_parts.length - 1];
+                    // Strip off the trailing bracket
+                    last_part = last_part.replace (")", "");
+
+                    if (!(last_part in package_names)) {
+                        package_names += last_part;
+                    }
+                } else {
+                    warning ("Unrecognised line from ubuntu-drivers, needs checking: %s", package_name);
+                }
+            }
+
+            available_drivers[parts[0]] = yield update_installed (parts[0], package_names);
+        }
+
+        if (available_drivers.length == 0) {
+            update_state (UP_TO_DATE);
+            return;
+        }
+
+        update_state (AVAILABLE);
+
+        if (notify) {
+            var notification = new Notification (_("Drivers available"));
+            notification.set_default_action (Application.ACTION_PREFIX + Application.SHOW_UPDATES_ACTION);
+            notification.set_body (_("For your system are drivers available"));
+            notification.set_icon (new ThemedIcon ("software-update-available"));
+
+            GLib.Application.get_default ().send_notification (NOTIFICATION_ID, notification);
+        }
+    }
+
+    private async GenericArray<string> update_installed (string driver, string[] package_names) {
+        var array = new GenericArray<string> ();
+        try {
+            var result = yield task.resolve_async (Pk.Filter.NONE, package_names, null, () => {});
+
+            var packages = result.get_package_array ();
+
+            bool all_installed = true;
+            foreach (var package in packages) {
+                array.add (package.package_id);
+
+                if (all_installed && (Pk.Info.INSTALLED == package.info)) {
+                    available_drivers_with_installed[driver] = true;
+                } else {
+                    all_installed = false;
+                    available_drivers_with_installed[driver] = false;
+                }
+            }
+        } catch (Error e) {
+            critical ("Failed to get package details, treating as not installed: %s", e.message);
+        }
+
+        return array;
+    }
+
+    public async void install (string pkg_name) throws DBusError, IOError {
+        if (!(pkg_name in available_drivers)) {
+            critical ("Driver not found");
+            return;
+        }
+
+        if (current_state.state != AVAILABLE) {
+            warning ("No drivers available, or already downloading a driver.");
+            return;
+        }
+
+        cancellable.reset ();
+
+        update_state (DOWNLOADING);
+
+        try {
+            string[] pkgs = available_drivers[pkg_name].data; // It seems arrays are imediately freed with async methods so this prevents a seg fault
+            var results = yield task.install_packages_async (pkgs, cancellable, progress_callback);
+
+            if (results.get_exit_code () == CANCELLED) {
+                debug ("Installation was cancelled");
+                update_state (AVAILABLE);
+                return;
+            }
+
+            foreach (var driver in available_drivers.get_keys ()) {
+                string[] driver_pkgs = available_drivers[driver].data;
+                yield update_installed (driver, driver_pkgs);
+            }
+
+            var notification = new Notification (_("Restart required"));
+            notification.set_body (_("Please restart your system to finalize driver installation"));
+            notification.set_icon (new ThemedIcon ("system-reboot"));
+            notification.set_default_action (Application.ACTION_PREFIX + Application.SHOW_UPDATES_ACTION);
+
+            GLib.Application.get_default ().send_notification (NOTIFICATION_ID, notification);
+
+            update_state (AVAILABLE);
+        } catch (Error e) {
+            critical ("Failed to install driver: %s", e.message);
+            send_error (e.message);
+        }
+    }
+
+    public void cancel () throws DBusError, IOError {
+        cancellable.cancel ();
+    }
+
+    private void progress_callback (Pk.Progress progress, Pk.ProgressType progress_type) {
+        update_state (current_state.state, PkUtils.status_to_title (progress.status));
+    }
+
+    private void send_error (string message) {
+        var notification = new Notification (_("A driver couldn't be installed"));
+        notification.set_body (_("An error occurred while trying to install a driver"));
+        notification.set_icon (new ThemedIcon ("dialog-error"));
+        notification.set_default_action (Application.ACTION_PREFIX + Application.SHOW_UPDATES_ACTION);
+
+        GLib.Application.get_default ().send_notification (NOTIFICATION_ID, notification);
+
+        update_state (ERROR, message);
+    }
+
+    private void update_state (PkUtils.State state, string message = "") {
+        current_state = {
+            state,
+            message
+        };
+
+        state_changed ();
+    }
+
+    public async PkUtils.CurrentState get_current_state () throws DBusError, IOError {
+        return current_state;
+    }
+
+    public async HashTable<string, bool> get_available_drivers () throws DBusError, IOError {
+        return available_drivers_with_installed;
+    }
+}