slackware-current/source/xap/xsane/xsane-0.999-no-file-selected.patch

From 2f7abcaa7ad39f118b2f49fdcba9c90b37b3d972 Mon Sep 17 00:00:00 2001
From: Nils Philippsen <nils@redhat.com>
Date: Fri, 5 Jul 2013 16:15:55 +0200
Subject: [PATCH] patch: no-file-selected

Squashed commit of the following:

commit f887550276e324151947960292a7266c71aeb573
Author: Pavel Polischouk <pavel.polischouk@gmail.com>
Date:   Fri Nov 25 23:55:49 2011 -0500

    fix changing working directory (#621778)

    The patch checks the value returned by xsane_back_gtk_get_filename. In
    most places it will check the result properly (taking 0 for success),
    except one case where it takes 0 for an error, and this happens in
    xsane_browse_filename_callback (xsane-front-gtk.c). The new code would
    abort copying the filename into preferences structure if 0 was returned,
    and that's the OK case. I'm very curious how wonderfully it would blow
    up if an actual error was returned, but that's a different story.

commit 2c02ddd8282fa231107d8860aee4d92bdb5cb8e8
Author: Nils Philippsen <nils@redhat.com>
Date:   Fri Nov 19 12:25:54 2010 +0100

    don't crash if no files are selected (#608047)
---
 src/xsane-back-gtk.c  | 20 ++++++++++++++++----
 src/xsane-front-gtk.c |  6 +++++-
 2 files changed, 21 insertions(+), 5 deletions(-)

diff --git a/src/xsane-back-gtk.c b/src/xsane-back-gtk.c
index bca9eb2..6ef1506 100644
--- a/src/xsane-back-gtk.c
+++ b/src/xsane-back-gtk.c
@@ -1111,6 +1111,11 @@ static void xsane_back_gtk_filetype2_callback(GtkWidget *widget, gpointer data)
 
   chooser_filename = gtk_file_chooser_get_filename(GTK_FILE_CHOOSER(filechooser));
 
+  if (!chooser_filename)
+  {
+    return;
+  }
+
   if ((new_filetype) && (*new_filetype))
   {
     extension = strrchr(chooser_filename, '.');
@@ -1505,12 +1510,19 @@ int xsane_back_gtk_get_filename(const char *label, const char *default_name, siz
 #endif
 
     chooser_filename = gtk_file_chooser_get_filename(GTK_FILE_CHOOSER(filechooser));
-    strncpy(filename, chooser_filename, max_len - 1);
-    g_free(chooser_filename);
+    if (chooser_filename)
+    {
+      strncpy(filename, chooser_filename, max_len - 1);
+      g_free(chooser_filename);
 
-    filename[max_len - 1] = '\0';
+      filename[max_len - 1] = '\0';
 
-    ok = TRUE;
+      ok = TRUE;
+    }
+    else
+    {
+      ok = FALSE;
+    }
   }
 
   gtk_widget_destroy(filechooser);
diff --git a/src/xsane-front-gtk.c b/src/xsane-front-gtk.c
index 4c973fb..7bb49b0 100644
--- a/src/xsane-front-gtk.c
+++ b/src/xsane-front-gtk.c
@@ -1333,7 +1333,11 @@ static void xsane_browse_filename_callback(GtkWidget *widget, gpointer data)
   snprintf(windowname, sizeof(windowname), "%s %s %s", xsane.prog_name, WINDOW_OUTPUT_FILENAME, xsane.device_text);
 
   umask((mode_t) preferences.directory_umask); /* define new file permissions */    
-  xsane_back_gtk_get_filename(windowname, filename, sizeof(filename), filename, &preferences.filetype, &preferences.cms_function, XSANE_FILE_CHOOSER_ACTION_SELECT_SAVE, show_extra_widgets, XSANE_FILE_FILTER_ALL | XSANE_FILE_FILTER_IMAGES, XSANE_FILE_FILTER_IMAGES);
+  if (xsane_back_gtk_get_filename(windowname, filename, sizeof(filename), filename, &preferences.filetype, &preferences.cms_function, XSANE_FILE_CHOOSER_ACTION_SELECT_SAVE, show_extra_widgets, XSANE_FILE_FILTER_ALL | XSANE_FILE_FILTER_IMAGES, XSANE_FILE_FILTER_IMAGES) < 0)
+  {
+    xsane_set_sensitivity(TRUE);
+    return;
+  }
   umask(XSANE_DEFAULT_UMASK); /* define new file permissions */    
 
   if (preferences.filename)
-- 
1.8.3.1