[nautilus/sam/tracker-3: 13/14] Limit starred files to within user's home directory

[Sam Thursfield <sthursfield src gnome org>]

commit d51fa1b08b2d9d26ae66e392011556a7b1acea5e
Author: Sam Thursfield <sam afuera me uk>
Date:   Wed Sep 2 12:38:48 2020 +0200

    Limit starred files to within user's home directory
    
    Previously starred files were limited to directories indexed by Tracker.
    Since the 'Port to Tracker 3' commit this is no longer the case.
    However, to avoid unbounded growth in the starred files database we
    want to prevent starring of network locations and removable devices
    for now as these entries might go stale and we don't have any way
    to clean them up.

 src/nautilus-files-view.c        |   8 +--
 src/nautilus-list-view.c         |   7 ++-
 src/nautilus-tag-manager.c       |  13 ++++
 src/nautilus-tag-manager.h       |   3 +
 src/nautilus-tracker-utilities.c | 133 ---------------------------------------
 src/nautilus-tracker-utilities.h |   2 -
 6 files changed, 24 insertions(+), 142 deletions(-)
---
diff --git a/src/nautilus-files-view.c b/src/nautilus-files-view.c
index 2d8439283..b22bd8408 100644
--- a/src/nautilus-files-view.c
+++ b/src/nautilus-files-view.c
@@ -7450,7 +7450,7 @@ real_update_actions_state (NautilusFilesView *view)
     GDriveStartStopType start_stop_type;
     g_autoptr (GFile) current_location = NULL;
     g_autofree gchar *current_uri = NULL;
-    gboolean current_directory_tracked;
+    gboolean can_star_current_directory;
     gboolean show_star;
     gboolean show_unstar;
     gchar *uri;
@@ -7784,12 +7784,12 @@ real_update_actions_state (NautilusFilesView *view)
 
     current_location = nautilus_file_get_location (nautilus_files_view_get_directory_as_file (view));
     current_uri = g_file_get_uri (current_location);
-    current_directory_tracked = nautilus_tracker_directory_is_tracked (current_location);
+    can_star_current_directory = nautilus_tag_manager_can_star_contents (priv->tag_manager, 
current_location);
 
     show_star = (selection != NULL) &&
-                (current_directory_tracked || selection_contains_starred);
+                (can_star_current_directory || selection_contains_starred);
     show_unstar = (selection != NULL) &&
-                  (current_directory_tracked || selection_contains_starred);
+                  (can_star_current_directory || selection_contains_starred);
     for (l = selection; l != NULL; l = l->next)
     {
         NautilusFile *file;
diff --git a/src/nautilus-list-view.c b/src/nautilus-list-view.c
index 2ac0890e5..e30fb6389 100644
--- a/src/nautilus-list-view.c
+++ b/src/nautilus-list-view.c
@@ -2494,14 +2494,15 @@ get_visible_columns (NautilusListView *list_view)
     GPtrArray *res;
     GList *l;
     g_autofree gchar *uri = NULL;
-    gboolean in_tracked_dir;
+    gboolean can_star_current_directory;
     gboolean is_starred;
 
     file = nautilus_files_view_get_directory_as_file (NAUTILUS_FILES_VIEW (list_view));
     uri = nautilus_file_get_uri (file);
 
     location = g_file_new_for_uri (uri);
-    in_tracked_dir = nautilus_tracker_directory_is_tracked (location);
+    can_star_current_directory = nautilus_tag_manager_can_star_contents (list_view->details->tag_manager,
+                                                                         location);
     is_starred = eel_uri_is_starred (uri);
 
     visible_columns = nautilus_file_get_metadata_list (file,
@@ -2515,7 +2516,7 @@ get_visible_columns (NautilusListView *list_view)
     for (l = visible_columns; l != NULL; l = l->next)
     {
         if (g_strcmp0 (l->data, "starred") != 0 ||
-            (g_strcmp0 (l->data, "starred") == 0 && (in_tracked_dir || is_starred)))
+            (g_strcmp0 (l->data, "starred") == 0 && (can_star_current_directory || is_starred)))
         {
             g_ptr_array_add (res, l->data);
         }
diff --git a/src/nautilus-tag-manager.c b/src/nautilus-tag-manager.c
index 02935f704..f9936df28 100644
--- a/src/nautilus-tag-manager.c
+++ b/src/nautilus-tag-manager.c
@@ -41,6 +41,7 @@ struct _NautilusTagManager
     TrackerSparqlStatement *query_file_is_starred;
 
     GHashTable *starred_file_uris;
+    GFile *home;
 
     GCancellable *cancellable;
 };
@@ -673,4 +674,16 @@ nautilus_tag_manager_init (NautilusTagManager *self)
                                                      (GDestroyNotify) g_free,
                                                      /* values are keys */
                                                      NULL);
+    self->home = g_file_new_for_path (g_get_home_dir ());
+}
+
+gboolean
+nautilus_tag_manager_can_star_contents (NautilusTagManager *tag_manager,
+                                        GFile              *directory)
+{
+    /* We only allow files to be starred inside the home directory for now.
+     * This avoids the starred files database growing too big.
+     * See https://gitlab.gnome.org/GNOME/nautilus/-/merge_requests/553#note_903108
+     */
+    return g_file_has_prefix (directory, tag_manager->home) || g_file_equal (directory, tag_manager->home);
 }
diff --git a/src/nautilus-tag-manager.h b/src/nautilus-tag-manager.h
index acac9301a..c0d793adc 100644
--- a/src/nautilus-tag-manager.h
+++ b/src/nautilus-tag-manager.h
@@ -51,4 +51,7 @@ void                nautilus_tag_manager_unstar_files       (NautilusTagManager
 gboolean            nautilus_tag_manager_file_is_starred   (NautilusTagManager *self,
                                                             const gchar        *file_uri);
 
+gboolean            nautilus_tag_manager_can_star_contents (NautilusTagManager *self,
+                                                            GFile              *directory);
+
 G_END_DECLS
diff --git a/src/nautilus-tracker-utilities.c b/src/nautilus-tracker-utilities.c
index 4c408942e..6230a5043 100644
--- a/src/nautilus-tracker-utilities.c
+++ b/src/nautilus-tracker-utilities.c
@@ -143,136 +143,3 @@ nautilus_tracker_get_miner_fs_busname (GError **error)
 
     return tracker_miner_fs_busname;
 }
-
-static GFile *
-location_from_tracker_dir (const gchar *value)
-{
-    const gchar *special_dir;
-    g_autoptr (GFile) home = NULL;
-    GFile *location;
-
-    home = g_file_new_for_path (g_get_home_dir ());
-
-    if (g_strcmp0 (value, "$HOME") == 0)
-    {
-        return g_steal_pointer (&home);
-    }
-
-    special_dir = NULL;
-    if (g_strcmp0 (value, "&DESKTOP") == 0)
-    {
-        special_dir = g_get_user_special_dir (G_USER_DIRECTORY_DESKTOP);
-    }
-    else if (g_strcmp0 (value, "&DOCUMENTS") == 0)
-    {
-        special_dir = g_get_user_special_dir (G_USER_DIRECTORY_DOCUMENTS);
-    }
-    else if (g_strcmp0 (value, "&DOWNLOAD") == 0)
-    {
-        special_dir = g_get_user_special_dir (G_USER_DIRECTORY_DOWNLOAD);
-    }
-    else if (g_strcmp0 (value, "&MUSIC") == 0)
-    {
-        special_dir = g_get_user_special_dir (G_USER_DIRECTORY_MUSIC);
-    }
-    else if (g_strcmp0 (value, "&PICTURES") == 0)
-    {
-        special_dir = g_get_user_special_dir (G_USER_DIRECTORY_PICTURES);
-    }
-    else if (g_strcmp0 (value, "&PUBLIC_SHARE") == 0)
-    {
-        special_dir = g_get_user_special_dir (G_USER_DIRECTORY_PUBLIC_SHARE);
-    }
-    else if (g_strcmp0 (value, "&TEMPLATES") == 0)
-    {
-        special_dir = g_get_user_special_dir (G_USER_DIRECTORY_TEMPLATES);
-    }
-    else if (g_strcmp0 (value, "&VIDEOS") == 0)
-    {
-        special_dir = g_get_user_special_dir (G_USER_DIRECTORY_VIDEOS);
-    }
-
-    if (special_dir != NULL)
-    {
-        location = g_file_new_for_commandline_arg (special_dir);
-
-        /* Ignore XDG directories set to $HOME, like the miner does */
-        if (g_file_equal (location, home))
-        {
-            g_clear_object (&location);
-        }
-    }
-    else
-    {
-        location = g_file_new_for_commandline_arg (value);
-    }
-
-    return location;
-}
-
-static GList *
-get_tracker_locations (const gchar *key)
-{
-    g_auto (GStrv) locations = NULL;
-    GList *list = NULL;
-    gint idx;
-    GFile *location;
-
-    locations = g_settings_get_strv (tracker_preferences, key);
-
-    for (idx = 0; locations[idx] != NULL; idx++)
-    {
-        location = location_from_tracker_dir (locations[idx]);
-        if (location != NULL)
-        {
-            list = g_list_prepend (list, location);
-        }
-    }
-
-    return list;
-}
-
-/**
- * nautilus_tracker_directory_is_tracked:
- * @directory: a #GFile representing a directory
- *
- * This function reads the "index-recursive-directories" and
- * "index-single-directories" keys from the org.freedesktop.tracker.miner.files
- * schema, and assumes the listed directories (and their descendants for the
- * former key) are tracked.
- *
- * Exception: XDG user dirs set to $HOME are ignored.
- *
- * FIXME: Tracker's files miner's logic is actually a lot more complex,
- * including configurable ignore patterns, but we are overlooking that.
- *
- * Returns: $TRUE if the @directory is, in principle, tracked. $FALSE otherwise.
- */
-gboolean
-nautilus_tracker_directory_is_tracked (GFile *directory)
-{
-    g_autolist (GFile) recursive_locations = NULL;
-    g_autolist (GFile) single_locations = NULL;
-    GList *l;
-
-    recursive_locations = get_tracker_locations (TRACKER_KEY_RECURSIVE_DIRECTORIES);
-    for (l = recursive_locations; l != NULL; l = l->next)
-    {
-        if (g_file_equal (directory, G_FILE (l->data)) ||
-            g_file_has_prefix (directory, G_FILE (l->data)))
-        {
-            return TRUE;
-        }
-    }
-
-    single_locations = get_tracker_locations (TRACKER_KEY_SINGLE_DIRECTORIES);
-    for (l = single_locations; l != NULL; l = l->next)
-    {
-        if (g_file_equal (directory, G_FILE (l->data)))
-        {
-            return TRUE;
-        }
-    }
-
-    return FALSE;
-}
diff --git a/src/nautilus-tracker-utilities.h b/src/nautilus-tracker-utilities.h
index d4b2eba0c..f541655e2 100644
--- a/src/nautilus-tracker-utilities.h
+++ b/src/nautilus-tracker-utilities.h
@@ -26,5 +26,3 @@
 
 TrackerSparqlConnection * nautilus_tracker_get_miner_fs_connection (GError **error);
 const gchar *             nautilus_tracker_get_miner_fs_busname    (GError **error);
-
-gboolean  nautilus_tracker_directory_is_tracked (GFile *directory);