Offline system upgrades

.github/workflows/main.yml

@@ -15,10 +15,8 @@ jobs:
     - name: Install Dependencies
       run: |
         apt update
-        apt install -y libaccountsservice-dev libdbus-1-dev libgranite-dev libgeoclue-2-dev meson valac
+        apt install -y libaccountsservice-dev libdbus-1-dev libgranite-dev libgeoclue-2-dev libpackagekit-glib2-dev libpolkit-gobject-1-dev meson valac
     - name: Build
-      env:
-        DESTDIR: out
       run: |
         meson build
         ninja -C build

data/io.elementary.settings-daemon.policy.in

@@ -0,0 +1,20 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE policyconfig PUBLIC
+ "-//freedesktop//DTD PolicyKit Policy Configuration 1.0//EN"
+ "http://www.freedesktop.org/standards/PolicyKit/1/policyconfig.dtd">
+<policyconfig>
+  <vendor>elementary</vendor>
+  <vendor_url>https://elementary.io/</vendor_url>
+
+  <action id="io.elementary.settings-daemon.system-upgrade">
+    <message gettext-domain="@GETTEXT_PACKAGE@">Authentication is required to upgrade elementary OS</message>
+    <icon_name>system-os-installer</icon_name>
+    <defaults>
+      <allow_any>no</allow_any>
+      <allow_inactive>no</allow_inactive>
+      <allow_active>auth_admin_keep</allow_active>
+    </defaults>
+    <annotate key="org.freedesktop.policykit.exec.path">@PKGDATADIR@/io.elementary.settings-daemon.system-upgrade.helper</annotate>
+  </action>
+
+</policyconfig>

data/io.elementary.settings-daemon.system-upgrade.helper

@@ -0,0 +1,61 @@
+#!/usr/bin/env python3
+import argparse
+import os
+import re
+import shutil
+
+
+def update_third_party_repository(current, next, repository_file):
+    r = re.compile("[deb|deb-src].* ({}).*$".format(current))
+
+    if os.path.isfile(repository_file):
+        should_delete = False
+        should_update = False
+        with open(repository_file, "r") as f:
+            content = []
+            for line in f.read().split("\n"):
+                if r.match(line):
+                    should_update = True
+                    line = line.replace(current, next)
+                    content.append(line)
+
+                    if "ppa.launchpad.net/elementary-os" in line:
+                        should_delete = True
+                    elif "packages.elementary.io" in line:
+                        should_delete = True
+
+        if should_delete:
+            os.remove(repository_file)
+
+        if should_update:
+            with open(repository_file, "w") as f:
+                f.write("\n".join(content))
+
+
+def install_files(next):
+    update_files = os.path.join(
+        "/", "usr", "share", "io.elementary.settings-daemon", "system-upgrades", next)
+    shutil.copytree(update_files, "/", dirs_exist_ok=True)
+
+
+def main():
+    parser = argparse.ArgumentParser(
+        description="Helper to upgrade elementary OS")
+
+    parser.add_argument("--update-third-party-repository", action="store_true")
+    parser.add_argument("--install-files", action="store_true")
+
+    parser.add_argument("--current", nargs="?", default=None)
+    parser.add_argument("--next", nargs="?", default=None)
+    parser.add_argument("--repository-file", nargs="?", default=None)
+
+    args = parser.parse_args()
+
+    if args.update_third_party_repository and args.current and args.next and args.repository_file:
+        return update_third_party_repository(args.current, args.next, args.repository_file)
+    elif args.install_files and args.next:
+        return install_files(args.next)
+
+
+if __name__ == "__main__":
+    main()

data/meson.build

@@ -34,3 +34,32 @@ i18n.merge_file(
     install: true,
     install_dir: join_paths(get_option('datadir'), 'metainfo'),
 )
+
+conf = configuration_data()
+conf.set('PKGDATADIR', pkgdatadir)
+conf.set('GETTEXT_PACKAGE', meson.project_name())
+
+gettext_declaration = configure_file(
+    configuration: conf,
+    input: meson.project_name() + '.policy.in',
+    output: meson.project_name() + '.policy.in'
+)
+
+i18n.merge_file(
+    input: gettext_declaration,
+    output: meson.project_name() + '.policy',
+    po_dir: join_paths(meson.source_root(), 'po'),
+    install: true,
+    install_dir: polkit_actiondir
+)
+
+install_subdir(
+    'system-upgrades',
+    install_dir: pkgdatadir
+)
+
+install_data(
+    meson.project_name() + '.system-upgrade.helper',
+    install_mode: 'r-xr--r--',
+    install_dir: pkgdatadir
+)

data/system-upgrades/jammy/etc/apt/sources.list.d/elementary.list

@@ -0,0 +1,2 @@
+deb http://ppa.launchpad.net/elementary-os/stable/ubuntu jammy main 
+deb-src http://ppa.launchpad.net/elementary-os/stable/ubuntu jammy main

data/system-upgrades/jammy/etc/apt/sources.list.d/patches.list

@@ -0,0 +1,2 @@
+deb http://ppa.launchpad.net/elementary-os/os-patches/ubuntu jammy main 
+deb-src http://ppa.launchpad.net/elementary-os/os-patches/ubuntu jammy main 

meson.build

@@ -4,6 +4,15 @@ project('io.elementary.settings-daemon',
     license: 'GPL3',
 )
 
+add_project_arguments(
+    '-DI_KNOW_THE_PACKAGEKIT_GLIB2_API_IS_SUBJECT_TO_CHANGE',
+    language:'c'
+)
+
+prefix = get_option('prefix')
+datadir = join_paths(prefix, get_option('datadir'))
+pkgdatadir = join_paths(datadir, meson.project_name())
+
 gio_dep = dependency ('gio-2.0')
 glib_dep = dependency('glib-2.0')
 granite_dep = dependency('granite', version: '>= 5.3.0')
@@ -12,6 +21,11 @@ i18n = import('i18n')
 cc = meson.get_compiler('c')
 m_dep = cc.find_library('m', required : false)
 libgeoclue_dep = dependency ('libgeoclue-2.0')
+packagekit_dep = dependency('packagekit-glib2')
+polkit_dep = dependency('polkit-gobject-1')
+posix_dep = meson.get_compiler('vala').find_library('posix')
+
+polkit_actiondir = polkit_dep.get_pkgconfig_variable('actiondir', define_variable: ['prefix', prefix])
 
 conf_data = configuration_data()
 conf_data.set('PROJECT_NAME', meson.project_name())

po/POTFILES

@@ -1 +1,2 @@
+data/io.elementary.settings-daemon.policy.in
 data/settings-daemon.appdata.xml.in

src/Application.vala

@@ -128,6 +128,24 @@ public class SettingsDaemon.Application : GLib.Application {
         }
     }
 
+    public override bool dbus_register (DBusConnection connection, string object_path) throws Error {
+        // We must chain up to the parent class:
+        base.dbus_register (connection, object_path);
+
+        // Now we can do our own stuff here. For example, we could export some D-Bus objects
+        connection.register_object (object_path, new Backends.SystemUpgrade ());
+
+        return true;
+    }
+
+    public override void dbus_unregister (DBusConnection connection, string object_path) {
+        // Do our own stuff here, e.g. unexport any D-Bus objects we exported in the dbus_register
+        //  hook above. Be sure to check that we actually did export them, since the hook
+        //  above might have returned early due to the parent class' hook returning false!
+
+        base.dbus_unregister (connection, object_path);
+    }
+
     public static int main (string[] args) {
         var application = new Application ();
         return application.run (args);