wip! Sketch out a live user modewip/live-user-mode

This is just an untested, first cut at adding a live user mode as
described in https://pagure.io/fedora-workstation/issue/362#comment-850114

5 files changed, 94 insertions, 30 deletions

diff --git a/gnome-initial-setup/gis-driver.c b/gnome-initial-setup/gis-driver.c
index f226576..e34893b 100644
--- a/gnome-initial-setup/gis-driver.c
+++ b/gnome-initial-setup/gis-driver.c
@@ -45,12 +45,14 @@ gis_driver_mode_get_type (void) {
   static GType enum_type_id = 0;
   if (G_UNLIKELY (!enum_type_id))
     {
-      static const GEnumValue values[] = {
+      static const GFlagsValue values[] = {
         { GIS_DRIVER_MODE_NEW_USER, "GIS_DRIVER_MODE_NEW_USER", "new_user" },
         { GIS_DRIVER_MODE_EXISTING_USER, "GIS_DRIVER_MODE_EXISTING_USER", "existing_user" },
+        { GIS_DRIVER_MODE_LIVE_USER, "GIS_DRIVER_MODE_LIVE_USER", "live_user" },
+        { GIS_DRIVER_MODE_ALL, "GIS_DRIVER_MODE_ALL", "all" },
         { 0, NULL, NULL }
       };
-      enum_type_id = g_enum_register_static("GisDriverMode", values);
+      enum_type_id = g_flags_register_static("GisDriverMode", values);
     }
   return enum_type_id;
 }
diff --git a/gnome-initial-setup/gis-driver.h b/gnome-initial-setup/gis-driver.h
index 9b935e2..cde9a0c 100644
--- a/gnome-initial-setup/gis-driver.h
+++ b/gnome-initial-setup/gis-driver.h
@@ -41,8 +41,10 @@ typedef enum {
 } UmAccountMode;
 
 typedef enum {
-  GIS_DRIVER_MODE_NEW_USER,
-  GIS_DRIVER_MODE_EXISTING_USER,
+  GIS_DRIVER_MODE_NEW_USER = 1 << 0,
+  GIS_DRIVER_MODE_EXISTING_USER = 1 << 1,
+  GIS_DRIVER_MODE_LIVE_USER = 1 << 2,
+  GIS_DRIVER_MODE_ALL = (GIS_DRIVER_MODE_NEW_USER | GIS_DRIVER_MODE_EXISTING_USER | GIS_DRIVER_MODE_LIVE_USER),
 } GisDriverMode;
 
 GisAssistant *gis_driver_get_assistant (GisDriver *driver);
diff --git a/gnome-initial-setup/gnome-initial-setup.c b/gnome-initial-setup/gnome-initial-setup.c
index 113ded3..704652b 100644
--- a/gnome-initial-setup/gnome-initial-setup.c
+++ b/gnome-initial-setup/gnome-initial-setup.c
@@ -46,8 +46,10 @@
 #define VENDOR_SKIP_KEY "skip"
 #define VENDOR_NEW_USER_ONLY_KEY "new_user_only"
 #define VENDOR_EXISTING_USER_ONLY_KEY "existing_user_only"
+#define VENDOR_LIVE_USER_ONLY_KEY "live_user_only"
 
 static gboolean force_existing_user_mode;
+static gboolean force_live_user_mode;
 
 static GPtrArray *skipped_pages;
 
@@ -56,27 +58,27 @@ typedef GisPage *(*PreparePage) (GisDriver *driver);
 typedef struct {
   const gchar *page_id;
   PreparePage prepare_page_func;
-  gboolean new_user_only;
+  GisDriverMode modes;
 } PageData;
 
-#define PAGE(name, new_user_only) { #name, gis_prepare_ ## name ## _page, new_user_only }
+#define PAGE(name, modes) { #name, gis_prepare_ ## name ## _page, modes }
 
 static PageData page_table[] = {
-  PAGE (welcome, FALSE),
-  PAGE (language, FALSE),
-  PAGE (keyboard, FALSE),
-  PAGE (network,  FALSE),
-  PAGE (privacy,  FALSE),
-  PAGE (timezone, TRUE),
-  PAGE (software, TRUE),
-  PAGE (goa,      FALSE),
-  PAGE (account,  TRUE),
-  PAGE (password, TRUE),
+  PAGE (welcome, GIS_DRIVER_MODE_ALL),
+  PAGE (language, GIS_DRIVER_MODE_ALL),
+  PAGE (keyboard, GIS_DRIVER_MODE_ALL),
+  PAGE (network,  GIS_DRIVER_MODE_NEW_USER | GIS_DRIVER_MODE_EXISTING_USER),
+  PAGE (privacy,  GIS_DRIVER_MODE_NEW_USER | GIS_DRIVER_MODE_EXISTING_USER),
+  PAGE (timezone, GIS_DRIVER_MODE_NEW_USER | GIS_DRIVER_MODE_LIVE_USER),
+  PAGE (software, GIS_DRIVER_MODE_NEW_USER | GIS_DRIVER_MODE_EXISTING_USER),
+  PAGE (goa,      GIS_DRIVER_MODE_NEW_USER | GIS_DRIVER_MODE_EXISTING_USER),
+  PAGE (account,  GIS_DRIVER_MODE_NEW_USER | GIS_DRIVER_MODE_LIVE_USER),
+  PAGE (password, GIS_DRIVER_MODE_NEW_USER),
 #ifdef HAVE_PARENTAL_CONTROLS
-  PAGE (parental_controls, TRUE),
-  PAGE (parent_password, TRUE),
+  PAGE (parental_controls, GIS_DRIVER_MODE_NEW_USER),
+  PAGE (parent_password, GIS_DRIVER_MODE_NEW_USER),
 #endif
-  PAGE (summary,  FALSE),
+  PAGE (summary, GIS_DRIVER_MODE_ALL),
   { NULL },
 };
 
@@ -122,17 +124,19 @@ strv_append (gchar **a,
 }
 
 static gchar **
-pages_to_skip_from_file (GisDriver *driver,
-                         gboolean   is_new_user)
+pages_to_skip_from_file (GisDriver *driver)
 {
+  GisDriverMode driver_mode;
   GStrv skip_pages = NULL;
   GStrv additional_skip_pages = NULL;
+  const char *vendor_key;
 
   /* This code will read the keyfile containing vendor customization options and
    * look for options under the "pages" group, and supports the following keys:
    *   - skip (optional): list of pages to be skipped always
-   *   - new_user_only (optional): list of pages to be skipped in existing user mode
-   *   - existing_user_only (optional): list of pages to be skipped in new user mode
+   *   - new_user_only (optional): list of pages to be skipped in existing user and live user modes
+   *   - existing_user_only (optional): list of pages to be skipped in new user and live user modes
+   *   - live_user_only (optional): list of pages to be skipped in new user and existing user modes
    *
    * This is how this file might look on a vendor image:
    *
@@ -141,12 +145,25 @@ pages_to_skip_from_file (GisDriver *driver,
    *   existing_user_only=language;keyboard
    */
 
+  driver_mode = gis_driver_get_mode (driver);
+  switch (driver_mode) {
+  case GIS_DRIVER_MODE_NEW_USER:
+    vendor_key = VENDOR_NEW_USER_ONLY_KEY;
+    break;
+  case GIS_DRIVER_MODE_LIVE_USER:
+    vendor_key = VENDOR_LIVE_USER_ONLY_KEY;
+    break;
+  case GIS_DRIVER_MODE_EXISTING_USER:
+    vendor_key = VENDOR_EXISTING_USER_ONLY_KEY;
+    break;
+  default:
+    g_assert_not_reached ();
+  }
+
   skip_pages = gis_driver_conf_get_string_list (driver, VENDOR_PAGES_GROUP,
                                                 VENDOR_SKIP_KEY, NULL);
   additional_skip_pages =
-  	gis_driver_conf_get_string_list (driver, VENDOR_PAGES_GROUP,
-                                     is_new_user ? VENDOR_EXISTING_USER_ONLY_KEY : VENDOR_NEW_USER_ONLY_KEY,
-                                     NULL);
+    gis_driver_conf_get_string_list (driver, VENDOR_PAGES_GROUP, vendor_key, NULL);
 
   if (!skip_pages && additional_skip_pages) {
     skip_pages = additional_skip_pages;
@@ -198,7 +215,8 @@ rebuild_pages_cb (GisDriver *driver)
   GisAssistant *assistant;
   GisPage *current_page;
   gchar **skip_pages;
-  gboolean is_new_user, skipped;
+  GisDriverMode driver_mode;
+  gboolean skipped;
 
   assistant = gis_driver_get_assistant (driver);
   current_page = gis_assistant_get_current_page (assistant);
@@ -217,13 +235,13 @@ rebuild_pages_cb (GisDriver *driver)
     ++page_data;
   }
 
-  is_new_user = (gis_driver_get_mode (driver) == GIS_DRIVER_MODE_NEW_USER);
-  skip_pages = pages_to_skip_from_file (driver, is_new_user);
+  driver_mode = gis_driver_get_mode (driver);
+  skip_pages = pages_to_skip_from_file (driver);
 
   for (; page_data->page_id != NULL; ++page_data) {
     skipped = FALSE;
 
-    if ((page_data->new_user_only && !is_new_user) ||
+    if (((page_data->modes & driver_mode) == 0) ||
         (should_skip_page (page_data->page_id, skip_pages)))
       skipped = TRUE;
 
@@ -247,6 +265,8 @@ get_mode (void)
 {
   if (force_existing_user_mode)
     return GIS_DRIVER_MODE_EXISTING_USER;
+  else if (force_live_user_mode)
+    return GIS_DRIVER_MODE_LIVE_USER;
   else
     return GIS_DRIVER_MODE_NEW_USER;
 }
@@ -269,6 +289,19 @@ initial_setup_disabled_by_anaconda (void)
   return g_key_file_get_boolean (key_file, "General", "post_install_tools_disabled", NULL);
 }
 
+static gboolean
+live_user_forced_by_kernel_command_line (void)
+{
+  g_autoptr(GError) error = NULL;
+  g_autofree char *contents = NULL;
+
+  if (!g_file_get_contents ("/proc/cmdline", &contents, NULL, &error)) {
+          return FALSE;
+  }
+
+  return strstr (contents, "rd.live.image") != NULL;
+}
+
 int
 main (int argc, char *argv[])
 {
@@ -280,6 +313,8 @@ main (int argc, char *argv[])
   GOptionEntry entries[] = {
     { "existing-user", 0, 0, G_OPTION_ARG_NONE, &force_existing_user_mode,
       _("Force existing user mode"), NULL },
+    { "live-user", 0, 0, G_OPTION_ARG_NONE, &force_live_user_mode,
+      _("Force live user mode"), NULL },
     { NULL }
   };
 
@@ -298,6 +333,9 @@ main (int argc, char *argv[])
 
   g_option_context_parse (context, &argc, &argv, NULL);
 
+  if (live_user_forced_by_kernel_command_line ())
+    force_live_user_mode = TRUE;
+
   bindtextdomain (GETTEXT_PACKAGE, GNOMELOCALEDIR);
   bind_textdomain_codeset (GETTEXT_PACKAGE, "UTF-8");
   textdomain (GETTEXT_PACKAGE);
diff --git a/gnome-initial-setup/pages/account/gis-account-pages.c b/gnome-initial-setup/pages/account/gis-account-pages.c
index d9cc8d9..37ee37e 100644
--- a/gnome-initial-setup/pages/account/gis-account-pages.c
+++ b/gnome-initial-setup/pages/account/gis-account-pages.c
@@ -26,6 +26,27 @@
 GisPage *
 gis_prepare_account_page (GisDriver *driver)
 {
+  GisDriverMode driver_mode;
+
+  driver_mode = gis_driver_get_mode (driver);
+
+  if (driver_mode == GIS_DRIVER_MODE_LIVE_USER) {
+    ActUserManager *act_client = act_user_manager_get_default ();
+    const char *username = "liveuser";
+    g_autoptr(ActUser) user = NULL;
+    g_autoptr(GError) error = NULL;
+
+    user = act_user_manager_create_user (act_client, username, username, ACT_USER_ACCOUNT_TYPE_ADMINISTRATOR, &error);
+
+    if (user != NULL) {
+      act_user_set_password_mode (user, ACT_USER_PASSWORD_MODE_NONE);
+      gis_driver_set_username (driver, username);
+      gis_driver_set_account_mode (driver, UM_LOCAL);
+      gis_driver_set_user_permissions (driver, user, NULL);
+    }
+    return NULL;
+  }
+
   return g_object_new (GIS_TYPE_ACCOUNT_PAGE,
                        "driver", driver,
                        NULL);
diff --git a/gnome-initial-setup/pages/summary/gis-summary-page.c b/gnome-initial-setup/pages/summary/gis-summary-page.c
index 0a8dcfd..d0f4a81 100644
--- a/gnome-initial-setup/pages/summary/gis-summary-page.c
+++ b/gnome-initial-setup/pages/summary/gis-summary-page.c
@@ -185,6 +185,7 @@ done_cb (GtkButton *button, GisSummaryPage *page)
   switch (gis_driver_get_mode (GIS_PAGE (page)->driver))
     {
     case GIS_DRIVER_MODE_NEW_USER:
+    case GIS_DRIVER_MODE_LIVE_USER:
       gis_driver_hide_window (GIS_PAGE (page)->driver);
       log_user_in (page);
       break;