e fm - fix popup to not crash by referring to possibly deleted data

fm icon info is transient because fm icons are transient. files may
get deleted, added or removed on the fly. keeping icon info around for
things like the popup is asking for tyrouble and does create  trouble.

so look it up each time based on filename string. safe!

this fixes T4716 and fixes T4798 (they are the same bug basically).

3 files changed, 36 insertions, 11 deletions

diff --git a/src/bin/e_fm.c b/src/bin/e_fm.c
index f190157443..ef8dad084a 100644
--- a/src/bin/e_fm.c
+++ b/src/bin/e_fm.c
@@ -1513,6 +1513,22 @@ e_fm2_all_list_get(Evas_Object *obj)
    return list;
 }
 
+E_API E_Fm2_Icon_Info *
+e_fm2_icon_file_get(Evas_Object *obj, const char *file)
+{
+   Eina_List *list = NULL, *l;
+   E_Fm2_Icon *ic;
+
+   EFM_SMART_CHECK(NULL);
+   if (!file) return;
+   EINA_LIST_FOREACH(sd->icons, l, ic)
+     {
+        if ((ic->info.file) && (!strcmp(ic->info.file, file)))
+          return &(ic->info);
+     }
+   return NULL;
+}
+
 E_API void
 e_fm2_deselect_all(Evas_Object *obj)
 {
diff --git a/src/bin/e_fm.h b/src/bin/e_fm.h
index 76b0b5fe48..aff1b72d29 100644
--- a/src/bin/e_fm.h
+++ b/src/bin/e_fm.h
@@ -169,6 +169,7 @@ E_API void             e_fm2_config_set(Evas_Object *obj, E_Fm2_Config *cfg);
 E_API E_Fm2_Config    *e_fm2_config_get(Evas_Object *obj);
 E_API Eina_List       *e_fm2_selected_list_get(Evas_Object *obj);
 E_API Eina_List       *e_fm2_all_list_get(Evas_Object *obj);
+E_API E_Fm2_Icon_Info *e_fm2_icon_file_get(Evas_Object *obj, const char *file);
 E_API void             e_fm2_select_set(Evas_Object *obj, const char *file, int select);
 E_API void             e_fm2_deselect_all(Evas_Object *obj);
 E_API void             e_fm2_file_show(Evas_Object *obj, const char *file);
diff --git a/src/modules/fileman/e_fwin.c b/src/modules/fileman/e_fwin.c
index 0082098f7e..ae7a3c4505 100644
--- a/src/modules/fileman/e_fwin.c
+++ b/src/modules/fileman/e_fwin.c
@@ -41,11 +41,11 @@ struct _E_Fwin
    const char          *overlay_file;
    const char          *scrollframe_file;
    const char          *theme_file;
+   const char          *over_file;
 
    Ecore_Timer *popup_timer;
    Ecore_Job *popup_del_job;
    Eina_List *popup_handlers;
-   E_Fm2_Icon_Info *popup_icon;
    Evas_Object *popup;
 
    Ecore_Timer *spring_timer;
@@ -760,7 +760,8 @@ _e_fwin_icon_popup_handler(void *data)
    evas_object_event_callback_del(fwin->win, EVAS_CALLBACK_MOUSE_IN, (Evas_Object_Event_Cb)_e_fwin_icon_popup_handler);
    evas_object_event_callback_del(fwin->win, EVAS_CALLBACK_MOUSE_OUT, (Evas_Object_Event_Cb)_e_fwin_icon_popup_handler);
    E_FREE_LIST(fwin->popup_handlers, ecore_event_handler_del);
-   fwin->popup_icon = NULL;
+   if (fwin->over_file) eina_stringshare_del(fwin->over_file);
+   fwin->over_file = NULL;
    return ECORE_CALLBACK_RENEW;
 }
 
@@ -788,6 +789,7 @@ _e_fwin_free(E_Fwin *fwin)
    if (fwin->overlay_file) eina_stringshare_del(fwin->overlay_file);
    if (fwin->scrollframe_file) eina_stringshare_del(fwin->scrollframe_file);
    if (fwin->theme_file) eina_stringshare_del(fwin->theme_file);
+   if (fwin->over_file) eina_stringshare_del(fwin->over_file);
    if (fwin->fad)
      {
         e_object_del(E_OBJECT(fwin->fad->dia));
@@ -820,13 +822,15 @@ _e_fwin_icon_hints(void *data, Evas *e EINA_UNUSED, Evas_Object *obj, void *even
    E_Zone *zone;
    Evas_Object *edje;
    E_Fwin *fwin = data;
+   E_Fm2_Icon_Info *popup_icon;
 
-   if (!fwin->popup_icon) return;
+   popup_icon = e_fm2_icon_file_get(fwin->cur_page->fm_obj, fwin->over_file);
+   if (!popup_icon) return;
    zone = fwin->zone ?: e_comp_object_util_zone_get(fwin->win);
-   e_fm2_icon_geometry_get(fwin->popup_icon->ic, &x, &y, &w, &h);
+   e_fm2_icon_geometry_get(popup_icon->ic, &x, &y, &w, &h);
    if (fwin->zone)
      {
-        evas_object_geometry_get(fwin->popup_icon->fm, &fx, &fy, NULL, NULL);
+        evas_object_geometry_get(popup_icon->fm, &fx, &fy, NULL, NULL);
         fx -= zone->x, fy -= zone->y;
      }
    else
@@ -872,10 +876,12 @@ _e_fwin_icon_popup(void *data)
    E_Zone *zone;
    char buf[4096];
    int mw, mh;
+   E_Fm2_Icon_Info *popup_icon;
 
    fwin->popup_timer = NULL;
-   if (!fwin->popup_icon) return EINA_FALSE;
-   snprintf(buf, sizeof(buf), "%s/%s", e_fm2_real_path_get(fwin->cur_page->fm_obj), fwin->popup_icon->file);
+   popup_icon = e_fm2_icon_file_get(fwin->cur_page->fm_obj, fwin->over_file);
+   if (!popup_icon) return EINA_FALSE;
+   snprintf(buf, sizeof(buf), "%s/%s", e_fm2_real_path_get(fwin->cur_page->fm_obj), popup_icon->file);
    if (!ecore_file_can_read(buf)) return EINA_FALSE;
    if (fwin->popup)
      {
@@ -891,8 +897,8 @@ _e_fwin_icon_popup(void *data)
    mh = zone->h * fileman_config->tooltip.size / 100.0;
 
    edje_object_part_text_set(bg, "e.text.title", 
-                             fwin->popup_icon->label ?
-                             fwin->popup_icon->label : fwin->popup_icon->file);
+                             popup_icon->label ?
+                             popup_icon->label : popup_icon->file);
    
    list = e_widget_list_add(e_comp->evas, 0, 0);
    if (fwin->win)
@@ -900,7 +906,7 @@ _e_fwin_icon_popup(void *data)
    
    o = e_widget_filepreview_add(e_comp->evas, mw, mh, 0);
    e_widget_filepreview_clamp_video_set(o, fileman_config->tooltip.clamp_size);
-   e_widget_filepreview_path_set(o, buf, fwin->popup_icon->mime);
+   e_widget_filepreview_path_set(o, buf, popup_icon->mime);
    e_widget_list_object_append(list, o, 1, 0, 0.5);
    edje_object_part_swallow(bg, "e.swallow.content", list);
    
@@ -952,7 +958,9 @@ _e_fwin_icon_mouse_in(void *data, Evas_Object *obj EINA_UNUSED, void *event_info
    fwin->popup_timer = NULL;
    if (!fileman_config->tooltip.enable) return;
    fwin->popup_timer = ecore_timer_add(fileman_config->tooltip.delay, _e_fwin_icon_popup, fwin);
-   fwin->popup_icon = ici;
+   if (fwin->over_file) eina_stringshare_del(fwin->over_file);
+   fwin->over_file = NULL;
+   if (ici->file) fwin->over_file = eina_stringshare_add(ici->file);
 #ifndef HAVE_WAYLAND_ONLY
    if (!fwin->popup_handlers)
      {