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user-accounts: prevent the only Administrator from being demoted

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If there is only one account of type Adminstrator and it is demoted to type
Standard the user can be left unable to unlock panels and perform other
Administrator tasks - prevent this by only allowing the Account Type to be
changed when the account is a standard user or, in the case that the account
is an Administrator, when there is one or more other Administrators.

https://bugzilla.gnome.org/show_bug.cgi?id=690246
This commit is contained in:
Joshua Lock 2013-05-29 17:16:47 -07:00 • committed by Thomas Wood
parent b906d32e4c
commit 0adf7c2073
1 changed files with 46 additions and 2 deletions
Download patch file Download diff file Expand all files Collapse all files

48
panels/user-accounts/um-user-panel.c
View file

@ -1043,6 +1043,42 @@ remove_unlock_tooltip (GtkWidget *button)
G_CALLBACK (show_tooltip_now), NULL);
}
static guint
get_num_admin (ActUserManager *um)
{
GSList *list;
GSList *l;
guint num_admin = 0;
list = act_user_manager_list_users (um);
for (l = list; l != NULL; l = l->next) {
ActUser *u = l->data;
if (act_user_get_account_type (u) == ACT_USER_ACCOUNT_TYPE_ADMINISTRATOR) {
num_admin++;
}
}
g_slist_free (list);
return num_admin;
}
static gboolean
would_demote_only_admin (ActUser *user,
ActUserManager *um)
{
/* Prevent the user from demoting the only admin account.
* Returns TRUE when user is an administrator and there is only
* one administrator */
if (act_user_get_account_type (user) == ACT_USER_ACCOUNT_TYPE_STANDARD)
return FALSE;
if (get_num_admin (um) > 1)
return FALSE;
return TRUE;
}
static void
on_permission_changed (GPermission *permission,
GParamSpec *pspec,
@ -1110,7 +1146,11 @@ on_permission_changed (GPermission *permission,
remove_unlock_tooltip (get_widget (d, "autologin-switch"));
} else if (is_authorized && act_user_is_local_account (user)) {
um_editable_combo_set_editable (UM_EDITABLE_COMBO (get_widget (d, "account-type-combo")), TRUE);
if (would_demote_only_admin (user, d->um)) {
um_editable_combo_set_editable (UM_EDITABLE_COMBO (get_widget (d, "account-type-combo")), FALSE);
} else {
um_editable_combo_set_editable (UM_EDITABLE_COMBO (get_widget (d, "account-type-combo")), TRUE);
}
remove_unlock_tooltip (get_widget (d, "account-type-combo"));
gtk_widget_set_sensitive (GTK_WIDGET (get_widget (d, "autologin-switch")), get_autologin_possible (user));
@ -1118,7 +1158,11 @@ on_permission_changed (GPermission *permission,
}
else {
um_editable_combo_set_editable (UM_EDITABLE_COMBO (get_widget (d, "account-type-combo")), FALSE);
add_unlock_tooltip (get_widget (d, "account-type-combo"));
if (would_demote_only_admin (user, d->um)) {
remove_unlock_tooltip (get_widget (d, "account-type-combo"));
} else {
add_unlock_tooltip (get_widget (d, "account-type-combo"));
}
gtk_widget_set_sensitive (GTK_WIDGET (get_widget (d, "autologin-switch")), FALSE);
add_unlock_tooltip (get_widget (d, "autologin-switch"));
}