Add share extension

1 files changed, 1284 insertions, 0 deletions

diff --git a/share/mate-file-manager-share.c b/share/mate-file-manager-share.c
new file mode 100644
index 0000000..e71e414
--- /dev/null
+++ b/share/mate-file-manager-share.c
@@ -0,0 +1,1284 @@
+/* mate-file-manager-share -- Caja File Sharing Extension
+ *
+ * Sebastien Estienne <[email protected]>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ * (C) Copyright 2005 Ethium, Inc.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <libcaja-extension/caja-extension-types.h>
+#include <libcaja-extension/caja-column-provider.h>
+#include <libcaja-extension/caja-extension-types.h>
+#include <libcaja-extension/caja-file-info.h>
+#include <libcaja-extension/caja-info-provider.h>
+#include <libcaja-extension/caja-menu-provider.h>
+#include <libcaja-extension/caja-property-page-provider.h>
+
+#include "mate-file-manager-share.h"
+
+#include <glib/gi18n-lib.h>
+
+#include <gio/gio.h>
+
+#include <gtk/gtk.h>
+
+#include <string.h>
+#include <time.h>
+
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <unistd.h>
+#include <stdlib.h>
+
+#include "shares.h"
+
+
+#define NEED_IF_GUESTOK_MASK (S_IRGRP | S_IXGRP | S_IROTH | S_IXOTH) /* need go+rx for guest enabled usershares */
+#define NEED_IF_WRITABLE_MASK (S_IWGRP | S_IWOTH)			/* writable usershares need go+w additionally*/
+#define NEED_ALL_MASK         (NEED_IF_GUESTOK_MASK | NEED_IF_WRITABLE_MASK)
+
+static GObjectClass *parent_class;
+
+/* Structure to hold all the information for a share's property page.  If
+ * you add stuff to this, add it to free_property_page_cb() as well.
+ */
+typedef struct {
+  char *path; /* Full path which is being shared */
+  CajaFileInfo *fileinfo; /* Caja file to which this page refers */
+
+  GtkBuilder *xml;
+
+  GtkWidget *main; /* Widget that holds all the rest.  Its "PropertyPage" GObject-data points to this PropertyPage structure */
+  
+  GtkWidget *checkbutton_share_folder;
+  GtkWidget *hbox_share_name;
+  GtkWidget *hbox_share_comment;
+  GtkWidget *entry_share_name;
+  GtkWidget *checkbutton_share_rw_ro;
+  GtkWidget *checkbutton_share_guest_ok;
+  GtkWidget *entry_share_comment;
+  GtkWidget *label_status;
+  GtkWidget *button_cancel;
+  GtkWidget *button_apply;
+
+  GtkWidget *standalone_window;
+
+  gboolean was_initially_shared;
+  gboolean was_writable;
+  gboolean is_dirty;
+} PropertyPage;
+
+static void property_page_set_warning (PropertyPage *page);
+static void property_page_set_error (PropertyPage *page, const char *message);
+static void property_page_set_normal (PropertyPage *page);
+
+static void
+property_page_validate_fields (PropertyPage *page)
+{
+  const char *name;
+
+  name = gtk_entry_get_text (GTK_ENTRY (page->entry_share_name));
+  
+  if (g_utf8_strlen (name, -1) <= 12)
+    property_page_set_normal (page);
+  else
+    property_page_set_warning (page);
+}
+
+static gboolean
+message_confirm_missing_permissions (GtkWidget *widget, const char *path, mode_t need_mask)
+{
+  GtkWidget *toplevel;
+  GtkWidget *dialog;
+  char *display_name;
+  gboolean result;
+
+  toplevel = gtk_widget_get_toplevel (widget);
+  if (!GTK_IS_WINDOW (toplevel))
+    toplevel = NULL;
+
+  display_name = g_filename_display_basename (path);
+
+  dialog = gtk_message_dialog_new (toplevel ? GTK_WINDOW (toplevel) : NULL,
+				   0,
+				   GTK_MESSAGE_QUESTION,
+				   GTK_BUTTONS_NONE,
+				   _("Caja needs to add some permissions to your folder \"%s\" in order to share it"),
+				   display_name);
+
+  /* FIXME: the following message only mentions "permission by others".  We
+   * should probably be more explicit and mention group/other permissions.
+   * We'll be able to do that after the period of string freeze.
+   */
+  gtk_message_dialog_format_secondary_text (GTK_MESSAGE_DIALOG (dialog),
+					    _("The folder \"%s\" needs the following extra permissions for sharing to work:\n"
+					      "%s%s%s"
+					      "Do you want Caja to add these permissions to the folder automatically?"),
+					    display_name,
+					    (need_mask & (S_IRGRP | S_IROTH)) ? _("  - read permission by others\n") : "",
+					    (need_mask & (S_IWGRP | S_IWOTH)) ? _("  - write permission by others\n") : "",
+					    (need_mask & (S_IXGRP | S_IXOTH)) ? _("  - execute permission by others\n") : "");
+  g_free (display_name);
+
+  gtk_dialog_add_button (GTK_DIALOG (dialog), GTK_STOCK_CANCEL, GTK_RESPONSE_CANCEL);
+  gtk_dialog_add_button (GTK_DIALOG (dialog), _("Add the permissions automatically"), GTK_RESPONSE_ACCEPT);
+  gtk_dialog_set_default_response (GTK_DIALOG (dialog), GTK_RESPONSE_ACCEPT);
+
+  result = gtk_dialog_run (GTK_DIALOG (dialog)) == GTK_RESPONSE_ACCEPT;
+  gtk_widget_destroy (dialog);
+
+  return result;
+}
+
+static void
+error_when_changing_permissions (GtkWidget *widget, const char *path)
+{
+  GtkWidget *toplevel;
+  GtkWidget *dialog;
+  char *display_name;
+
+  toplevel = gtk_widget_get_toplevel (widget);
+  if (!GTK_IS_WINDOW (toplevel))
+    toplevel = NULL;
+
+  display_name = g_filename_display_basename (path);
+
+  dialog = gtk_message_dialog_new (toplevel ? GTK_WINDOW (toplevel) : NULL,
+				   0,
+				   GTK_MESSAGE_ERROR,
+				   GTK_BUTTONS_OK,
+				   _("Could not change the permissions of folder \"%s\""),
+				   display_name);
+  g_free (display_name);
+
+  gtk_dialog_run (GTK_DIALOG (dialog));
+  gtk_widget_destroy (dialog);
+}
+
+static char *
+get_key_file_path (void)
+{
+  return g_build_filename (g_get_home_dir (), ".mate2", "mate-file-manager-share-modified-permissions", NULL);
+}
+
+static void
+save_key_file (const char *filename, GKeyFile *key_file)
+{
+  char *contents;
+  gsize length;
+
+  /* NULL GError */
+  contents = g_key_file_to_data (key_file, &length, NULL);
+  if (!contents)
+    return;
+
+  /* NULL GError */
+  g_file_set_contents (filename, contents, length, NULL);
+
+  g_free (contents);
+}
+
+static void
+save_changed_permissions (const char *path, mode_t need_mask)
+{
+  GKeyFile *key_file;
+  char *key_file_path;
+  char str[50];
+
+  key_file = g_key_file_new ();
+  key_file_path = get_key_file_path ();
+
+  /* NULL GError
+   *
+   * We don't check the return value of this.  If the file doesn't exist, we'll
+   * simply want to create it.
+   */
+  g_key_file_load_from_file (key_file, key_file_path, 0, NULL);
+
+  g_snprintf (str, sizeof (str), "%o", (guint) need_mask); /* octal, baby */
+  g_key_file_set_string (key_file, path, "need_mask", str);
+
+  save_key_file (key_file_path, key_file);
+
+  g_key_file_free (key_file);
+  g_free (key_file_path);
+}
+
+static void
+remove_permissions (const char *path, mode_t need_mask)
+{
+  struct stat st;
+  mode_t new_mode;
+
+  if (need_mask == 0)
+    return;
+
+  if (stat (path, &st) != 0)
+    return;
+
+  new_mode = st.st_mode & ~need_mask;
+
+  /* Bleah, no error checking */
+  chmod (path, new_mode);
+}
+
+static void
+remove_from_saved_permissions (const char *path, mode_t remove_mask)
+{
+  GKeyFile *key_file;
+  char *key_file_path;
+
+  if (remove_mask == 0)
+    return;
+
+  key_file = g_key_file_new ();
+  key_file_path = get_key_file_path ();
+
+  if (g_key_file_load_from_file (key_file, key_file_path, 0, NULL))
+    {
+      mode_t need_mask;
+      mode_t remove_from_current_mask;
+      char *str;
+
+      need_mask = 0;
+
+      /* NULL GError */
+      str = g_key_file_get_string (key_file, path, "need_mask", NULL);
+
+      if (str)
+	{
+	  guint i;
+
+	  if (sscanf (str, "%o", &i) == 1) /* octal */
+	    need_mask = i;
+
+	  g_free (str);
+	}
+
+      remove_from_current_mask = need_mask & remove_mask;
+      remove_permissions (path, remove_from_current_mask);
+
+      need_mask &= ~remove_mask;
+
+      if (need_mask == 0)
+	{
+	  /* NULL GError */
+	  g_key_file_remove_group (key_file, path, NULL);
+	}
+      else
+	{
+	  char buf[50];
+
+	  g_snprintf (buf, sizeof (buf), "%o", (guint) need_mask); /* octal */
+	  g_key_file_set_string (key_file, path, "need_mask", buf);
+	}
+
+      save_key_file (key_file_path, key_file);
+    }
+
+  g_key_file_free (key_file);
+  g_free (key_file_path);
+}
+
+static void
+restore_saved_permissions (const char *path)
+{
+  remove_from_saved_permissions (path, NEED_ALL_MASK);
+}
+
+static void
+restore_write_permissions (const char *path)
+{
+  remove_from_saved_permissions (path, NEED_IF_WRITABLE_MASK);
+}
+
+typedef enum {
+  CONFIRM_CANCEL_OR_ERROR,
+  CONFIRM_NO_MODIFICATIONS,
+  CONFIRM_MODIFIED
+} ConfirmPermissionsStatus;
+
+static ConfirmPermissionsStatus
+confirm_sharing_permissions (GtkWidget *widget, const char *path, gboolean is_shared, gboolean guest_ok, gboolean is_writable)
+{
+  struct stat st;
+  mode_t mode, new_mode, need_mask;
+
+  if (!is_shared)
+    return CONFIRM_NO_MODIFICATIONS;
+
+  if (stat (path, &st) != 0)
+    return CONFIRM_NO_MODIFICATIONS; /* We'll just let "net usershare" give back an error if the file disappears */
+
+  new_mode = mode = st.st_mode;
+
+  if (guest_ok)
+    new_mode |= NEED_IF_GUESTOK_MASK;
+  if (is_writable)
+    new_mode |= NEED_IF_WRITABLE_MASK;
+
+  need_mask = new_mode & ~mode;
+
+  if (need_mask != 0)
+    {
+      g_assert (mode != new_mode);
+
+      if (!message_confirm_missing_permissions (widget, path, need_mask))
+	return CONFIRM_CANCEL_OR_ERROR;
+
+      if (chmod (path, new_mode) != 0)
+	{
+	  error_when_changing_permissions (widget, path);
+	  return CONFIRM_CANCEL_OR_ERROR;
+	}
+
+      save_changed_permissions (path, need_mask);
+
+      return CONFIRM_MODIFIED;
+    }
+  else
+    {
+      g_assert (mode == new_mode);
+      return CONFIRM_NO_MODIFICATIONS;
+    }
+
+  g_assert_not_reached ();
+  return CONFIRM_CANCEL_OR_ERROR;
+}
+
+static gboolean
+property_page_commit (PropertyPage *page)
+{
+  gboolean is_shared;
+  ShareInfo share_info;
+  ConfirmPermissionsStatus status;
+  GError *error;
+  gboolean retval;
+
+  is_shared = gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (page->checkbutton_share_folder));
+
+  share_info.path = page->path;
+  share_info.share_name = (char *) gtk_entry_get_text (GTK_ENTRY (page->entry_share_name));
+  share_info.comment = (char *) gtk_entry_get_text (GTK_ENTRY (page->entry_share_comment));
+  share_info.is_writable = gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (page->checkbutton_share_rw_ro));
+  share_info.guest_ok = gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (page->checkbutton_share_guest_ok));
+
+  /* Do we need to unset the write permissions that we added in the past? */
+  if (is_shared && page->was_writable && !share_info.is_writable)
+    restore_write_permissions (page->path);
+
+  status = confirm_sharing_permissions (page->main, page->path, is_shared, share_info.guest_ok, share_info.is_writable);
+  if (status == CONFIRM_CANCEL_OR_ERROR)
+    return FALSE; /* the user didn't want us to change his folder's permissions */
+
+  error = NULL;
+  retval = shares_modify_share (share_info.path, is_shared ? &share_info : NULL, &error);
+
+  if (!retval)
+    {
+      property_page_set_error (page, error->message);
+      g_error_free (error);
+
+      /* Since the operation failed, we restore things to the way they were */
+      if (status == CONFIRM_MODIFIED)
+	restore_saved_permissions (page->path);
+    }
+  else
+    {
+      property_page_validate_fields (page);
+      caja_file_info_invalidate_extension_info (page->fileinfo);
+    }
+
+  if (!is_shared)
+    restore_saved_permissions (page->path);
+
+  /* update initially shared state, so that we may undo later on */
+  if (retval)
+    {
+      page->was_initially_shared = is_shared;
+      page->is_dirty = FALSE;
+    }
+
+  return retval;
+}
+
+/*--------------------------------------------------------------------------*/
+static gchar *
+get_fullpath_from_fileinfo(CajaFileInfo *fileinfo)
+{
+  GFile *file;
+  gchar *fullpath;
+
+  g_assert (fileinfo != NULL);
+  
+  file = caja_file_info_get_location(fileinfo);
+  fullpath = g_file_get_path(file);
+  g_assert (fullpath != NULL && g_file_is_native(file)); /* In the beginning we checked that this was a local URI */
+  g_object_unref(file);
+
+  return(fullpath);
+}
+
+
+/*--------------------------------------------------------------------------*/
+static void
+property_page_set_warning (PropertyPage *page)
+{
+  GdkColor  colorYellow;
+
+  gtk_label_set_text (GTK_LABEL (page->label_status), _("Share name is too long"));
+
+  gdk_color_parse ("#ECDF62", &colorYellow);
+  gtk_widget_modify_base (page->entry_share_name, GTK_STATE_NORMAL, &colorYellow);
+}
+
+
+static void
+property_page_set_error (PropertyPage *page, const char *message)
+{
+  GdkColor colorRed;
+
+  gtk_label_set_text (GTK_LABEL (page->label_status), message);
+
+  gdk_color_parse ("#C1665A", &colorRed);
+  gtk_widget_modify_base (page->entry_share_name, GTK_STATE_NORMAL, &colorRed);
+}
+
+static void
+property_page_set_normal (PropertyPage *page)
+{
+  gtk_label_set_text (GTK_LABEL (page->label_status), "");
+  gtk_widget_modify_base (page->entry_share_name, GTK_STATE_NORMAL, NULL);
+}
+
+static gboolean
+property_page_share_name_is_valid (PropertyPage *page)
+{
+  const char *newname;
+
+  newname = gtk_entry_get_text (GTK_ENTRY (page->entry_share_name));
+
+  if (strlen (newname) == 0)
+    {
+      property_page_set_error (page, _("The share name cannot be empty"));
+      return FALSE;
+    }
+  else
+    {
+      GError *error;
+      gboolean exists;
+
+      error = NULL;
+      if (!shares_get_share_name_exists (newname, &exists, &error))
+	{
+	  char *str;
+
+	  str = g_strdup_printf (_("Error while getting share information: %s"), error->message);
+	  property_page_set_error (page, str);
+	  g_free (str);
+	  g_error_free (error);
+
+	  return FALSE;
+	}
+
+      if (exists)
+	{
+	  property_page_set_error (page, _("Another share has the same name"));
+	  return FALSE;
+	}
+      else
+	{
+	  property_page_set_normal (page);
+	  return TRUE;
+	}
+    }
+}
+
+static void
+property_page_set_controls_sensitivity (PropertyPage *page,
+					gboolean      sensitive)
+{
+  gtk_widget_set_sensitive (page->entry_share_name, sensitive);
+  gtk_widget_set_sensitive (page->entry_share_comment, sensitive);
+  gtk_widget_set_sensitive (page->hbox_share_comment, sensitive);
+  gtk_widget_set_sensitive (page->hbox_share_name, sensitive);
+  gtk_widget_set_sensitive (page->checkbutton_share_rw_ro, sensitive);
+
+  if (sensitive)
+    {
+      gboolean guest_ok_allowed;
+      shares_supports_guest_ok (&guest_ok_allowed, NULL);
+      gtk_widget_set_sensitive (page->checkbutton_share_guest_ok, guest_ok_allowed);
+    }
+  else
+    gtk_widget_set_sensitive (page->checkbutton_share_guest_ok, FALSE);
+}
+
+static void
+property_page_check_sensitivity (PropertyPage *page)
+{
+  gboolean enabled;
+  gboolean apply_is_sensitive;
+
+  enabled = gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (page->checkbutton_share_folder));
+  property_page_set_controls_sensitivity (page, enabled);
+
+  if (enabled)
+    apply_is_sensitive = page->is_dirty || !page->was_initially_shared;
+  else
+    apply_is_sensitive = page->was_initially_shared;
+
+  gtk_widget_set_sensitive (page->button_apply, apply_is_sensitive);
+  gtk_button_set_label (GTK_BUTTON(page->button_apply),
+			page->was_initially_shared ? _("Modify _Share") : _("Create _Share"));
+}
+
+static void
+modify_share_name_text_entry  (GtkEditable *editable,
+			       gpointer user_data)
+{
+  PropertyPage *page;
+
+  page = user_data;
+
+  page->is_dirty = TRUE;
+
+  /* This function does simple validation on the share name and sets the error
+   * label; just let it run and ignore the result value.
+   */
+  property_page_share_name_is_valid (page);
+
+  property_page_check_sensitivity (page);
+}
+
+static void
+modify_share_comment_text_entry  (GtkEditable *editable,
+				  gpointer user_data)
+{
+  PropertyPage *page;
+
+  page = user_data;
+
+  page->is_dirty = TRUE;
+  property_page_check_sensitivity (page);
+}
+
+/*--------------------------------------------------------------------------*/
+static void
+on_checkbutton_share_folder_toggled    (GtkToggleButton *togglebutton,
+                                        gpointer         user_data)
+{
+  PropertyPage *page;
+
+  page = user_data;
+
+  property_page_check_sensitivity (page);
+}
+
+static void
+on_checkbutton_rw_ro_toggled    (GtkToggleButton *togglebutton,
+				 gpointer         user_data)
+{
+  PropertyPage *page;
+
+  page = user_data;
+
+  page->is_dirty = TRUE;
+
+  property_page_check_sensitivity (page);
+}
+
+static void
+on_checkbutton_guest_ok_toggled    (GtkToggleButton *togglebutton,
+				    gpointer         user_data)
+{
+  PropertyPage *page;
+
+  page = user_data;
+
+  page->is_dirty = TRUE;
+
+  property_page_check_sensitivity (page);
+}
+
+static void
+free_property_page_cb (gpointer data)
+{
+  PropertyPage *page;
+
+  page = data;
+
+  g_free (page->path);
+  g_object_unref (page->fileinfo);
+  g_object_unref (page->xml);
+
+  g_free (page);
+}
+
+static void
+button_apply_clicked_cb (GtkButton *button,
+			 gpointer   data)
+{
+  PropertyPage *page;
+
+  page = data;
+
+  if (property_page_commit (page))
+    {
+      if (page->standalone_window)
+	gtk_widget_destroy (page->standalone_window);
+      else
+        property_page_check_sensitivity (page);
+    }
+}
+
+/*--------------------------------------------------------------------------*/
+static PropertyPage *
+create_property_page (CajaFileInfo *fileinfo)
+{
+  PropertyPage *page;
+  GError *error;
+  ShareInfo *share_info;
+  char *share_name;
+  gboolean free_share_name;
+  const char *comment;
+  char *apply_button_label;
+
+  page = g_new0 (PropertyPage, 1);
+
+  page->path = get_fullpath_from_fileinfo(fileinfo);
+  page->fileinfo = g_object_ref (fileinfo);
+
+  error = NULL;
+  if (!shares_get_share_info_for_path (page->path, &share_info, &error))
+    {
+      /* We'll assume that there is no share for that path, but we'll still
+       * bring up an error dialog.
+       */
+      GtkWidget *message;
+
+      message = gtk_message_dialog_new (NULL, GTK_DIALOG_MODAL, GTK_MESSAGE_ERROR, GTK_BUTTONS_CLOSE,
+					_("There was an error while getting the sharing information"));
+      gtk_message_dialog_format_secondary_text (GTK_MESSAGE_DIALOG (message), "%s", error->message);
+      gtk_widget_show (message);
+
+      share_info = NULL;
+      g_error_free (error);
+      error = NULL;
+    }
+
+
+  page->xml = gtk_builder_new ();
+  gtk_builder_set_translation_domain (page->xml, "mate-file-manager-share");
+  g_assert (gtk_builder_add_from_file (page->xml,
+              INTERFACES_DIR"/share-dialog.ui", &error));
+
+  page->main = GTK_WIDGET (gtk_builder_get_object (page->xml, "vbox1"));
+  g_assert (page->main != NULL);
+
+  g_object_set_data_full (G_OBJECT (page->main),
+			  "PropertyPage",
+			  page,
+			  free_property_page_cb);
+
+  page->checkbutton_share_folder = GTK_WIDGET (gtk_builder_get_object (page->xml,"checkbutton_share_folder"));
+  page->hbox_share_comment = GTK_WIDGET (gtk_builder_get_object (page->xml,"hbox_share_comment"));
+  page->hbox_share_name = GTK_WIDGET (gtk_builder_get_object (page->xml,"hbox_share_name"));
+  page->checkbutton_share_rw_ro = GTK_WIDGET (gtk_builder_get_object (page->xml,"checkbutton_share_rw_ro"));
+  page->checkbutton_share_guest_ok = GTK_WIDGET (gtk_builder_get_object (page->xml,"checkbutton_share_guest_ok"));
+  page->entry_share_name = GTK_WIDGET (gtk_builder_get_object (page->xml,"entry_share_name"));
+  page->entry_share_comment = GTK_WIDGET (gtk_builder_get_object (page->xml,"entry_share_comment"));
+  page->label_status = GTK_WIDGET (gtk_builder_get_object (page->xml,"label_status"));
+  page->button_cancel = GTK_WIDGET (gtk_builder_get_object (page->xml,"button_cancel"));
+  page->button_apply = GTK_WIDGET (gtk_builder_get_object (page->xml,"button_apply"));
+
+  /* Sanity check so that we don't screw up the Glade file */
+  g_assert (page->checkbutton_share_folder != NULL
+	    && page->hbox_share_comment != NULL
+	    && page->hbox_share_name != NULL
+	    && page->checkbutton_share_rw_ro != NULL
+	    && page->checkbutton_share_guest_ok != NULL
+	    && page->entry_share_name != NULL
+	    && page->entry_share_comment != NULL
+	    && page->label_status != NULL
+	    && page->button_cancel != NULL
+	    && page->button_apply != NULL);
+
+  if (share_info)
+    {
+      page->was_initially_shared = TRUE;
+      page->was_writable = share_info->is_writable;
+    }
+
+  /* Share name */
+
+  if (share_info)
+    {
+      share_name = share_info->share_name;
+      free_share_name = FALSE;
+    }
+  else
+    {
+      share_name = g_filename_display_basename (page->path);
+      free_share_name = TRUE;
+    }
+
+  gtk_entry_set_text (GTK_ENTRY (page->entry_share_name), share_name);
+
+  if (free_share_name)
+    g_free (share_name);
+
+  /* Comment */
+
+  if (share_info == NULL || share_info->comment == NULL)
+    comment = "";
+  else
+    comment = share_info->comment;
+
+  gtk_entry_set_text (GTK_ENTRY (page->entry_share_comment), comment);
+
+  /* Share toggle */
+
+  if (share_info)
+    gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (page->checkbutton_share_folder), TRUE);
+  else
+    {
+      gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (page->checkbutton_share_folder), FALSE);
+    }
+
+  /* Share name */
+
+  if (g_utf8_strlen(gtk_entry_get_text (GTK_ENTRY (page->entry_share_name)), -1) > 12)
+    property_page_set_warning (page);
+
+  /* Permissions */
+  if (share_info != NULL && share_info->is_writable)
+    gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (page->checkbutton_share_rw_ro), TRUE);
+  else
+    gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (page->checkbutton_share_rw_ro), FALSE);
+
+  /* Guest access */
+  if (share_info != NULL && share_info->guest_ok)
+    gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (page->checkbutton_share_guest_ok), TRUE);
+  else
+    gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (page->checkbutton_share_guest_ok), FALSE);
+
+  /* Apply button */
+
+  if (share_info)
+    apply_button_label = _("Modify _Share");
+  else
+    apply_button_label = _("Create _Share");
+
+  gtk_button_set_label (GTK_BUTTON (page->button_apply), apply_button_label);
+  gtk_button_set_use_underline (GTK_BUTTON (page->button_apply), TRUE);
+  gtk_button_set_image (GTK_BUTTON (page->button_apply), gtk_image_new_from_stock (GTK_STOCK_SAVE, GTK_ICON_SIZE_BUTTON));
+
+  gtk_widget_set_sensitive (page->button_apply, FALSE);
+
+  /* Sensitivity */
+
+  property_page_check_sensitivity (page);
+
+  /* Signal handlers */
+
+  g_signal_connect (page->checkbutton_share_folder, "toggled",
+                    G_CALLBACK (on_checkbutton_share_folder_toggled),
+                    page);
+
+  g_signal_connect (page->checkbutton_share_rw_ro, "toggled",
+                    G_CALLBACK (on_checkbutton_rw_ro_toggled),
+                    page);
+
+  g_signal_connect (page->checkbutton_share_guest_ok, "toggled",
+                    G_CALLBACK (on_checkbutton_guest_ok_toggled),
+                    page);
+
+  g_signal_connect (page->entry_share_name, "changed",
+                    G_CALLBACK (modify_share_name_text_entry),
+                    page);
+
+  g_signal_connect (page->entry_share_comment, "changed",
+		    G_CALLBACK (modify_share_comment_text_entry),
+		    page);
+
+  g_signal_connect (page->button_apply, "clicked",
+		    G_CALLBACK (button_apply_clicked_cb), page);
+
+  if (share_info != NULL)
+    shares_free_share_info (share_info);
+
+  return page;
+}
+
+/* Implementation of the CajaInfoProvider interface */
+
+/* caja_info_provider_update_file_info 
+ * This function is called by Caja when it wants the extension to 
+ * fill in data about the file.  It passes a CajaFileInfo object,
+ * which the extension can use to read data from the file, and which
+ * the extension should add data to.
+ *
+ * If the data can be added immediately (without doing blocking IO), 
+ * the extension can do so, and return CAJA_OPERATION_COMPLETE.  
+ * In this case the 'update_complete' and 'handle' parameters can be 
+ * ignored.
+ * 
+ * If waiting for the deata would block the UI, the extension should
+ * perform the task asynchronously, and return 
+ * CAJA_OPERATION_IN_PROGRESS.  The function must also set the 
+ * 'handle' pointer to a value unique to the object, and invoke the
+ * 'update_complete' closure when the update is done.
+ * 
+ * If the extension encounters an error, it should return 
+ * CAJA_OPERATION_FAILED.
+ */
+typedef struct {
+  gboolean cancelled;
+  CajaInfoProvider *provider;
+  CajaFileInfo *file;
+  GClosure *update_complete;
+} CajaShareHandle;
+
+static CajaShareStatus 
+get_share_status_and_free_share_info (ShareInfo *share_info)
+{
+  CajaShareStatus result;
+
+  if (!share_info)
+    result = CAJA_SHARE_NOT_SHARED;
+  else
+    {
+      if (share_info->is_writable)
+	result = CAJA_SHARE_SHARED_RW;
+      else
+	result = CAJA_SHARE_SHARED_RO;
+
+      shares_free_share_info (share_info);
+    }
+
+  return result;
+}
+
+
+/*--------------------------------------------------------------------------*/
+static void
+get_share_info_for_file_info (CajaFileInfo *file, ShareInfo **share_info, gboolean *is_shareable)
+{
+  char		*uri;
+  char		*local_path = NULL;
+  GFile         *f;
+
+  *share_info = NULL;
+  *is_shareable = FALSE;
+
+  uri = caja_file_info_get_uri (file);
+  f = caja_file_info_get_location(file);
+  if (!uri)
+    goto out;
+
+#define NETWORK_SHARE_PREFIX "network:///share-"
+
+  if (g_str_has_prefix (uri, NETWORK_SHARE_PREFIX))
+    {
+      const char *share_name;
+
+      share_name = uri + strlen (NETWORK_SHARE_PREFIX);
+
+      /* FIXME: NULL GError */
+      if (!shares_get_share_info_for_share_name (share_name, share_info, NULL))
+	{
+	  *share_info = NULL;
+	  *is_shareable = TRUE; /* it *has* the prefix, anyway... we are just unsynchronized with what mate-vfs thinks */
+	}
+      else
+	{
+	  *is_shareable = TRUE;
+	}
+
+      goto out;
+    }
+
+  if (!caja_file_info_is_directory(file))
+    goto out;
+
+  local_path = g_file_get_path(f);
+  if (!local_path || !g_file_is_native(f))
+    goto out;
+
+  /* FIXME: NULL GError */
+  if (!shares_get_share_info_for_path (local_path, share_info, NULL))
+    goto out;
+
+  *is_shareable = TRUE;
+
+ out:
+
+  g_object_unref(f);
+  g_free (uri);
+  g_free (local_path);
+}
+
+/*--------------------------------------------------------------------------*/
+static CajaShareStatus 
+file_get_share_status_file(CajaFileInfo *file)
+{
+  ShareInfo *share_info;
+  gboolean is_shareable;
+
+  get_share_info_for_file_info (file, &share_info, &is_shareable);
+
+  if (!is_shareable)
+    return CAJA_SHARE_NOT_SHARED;
+
+  return get_share_status_and_free_share_info (share_info);
+}
+
+static CajaOperationResult
+caja_share_update_file_info (CajaInfoProvider *provider,
+				 CajaFileInfo *file,
+				 GClosure *update_complete,
+				 CajaOperationHandle **handle)
+{
+/*   gchar *share_status = NULL; */
+  
+  switch (file_get_share_status_file (file)) {
+
+  case CAJA_SHARE_SHARED_RO:
+    caja_file_info_add_emblem (file, "shared");
+/*     share_status = _("shared (read only)"); */
+    break;
+
+  case CAJA_SHARE_SHARED_RW:
+    caja_file_info_add_emblem (file, "shared");
+/*     share_status = _("shared (read and write)"); */
+    break;
+
+  case CAJA_SHARE_NOT_SHARED:
+/*     share_status = _("not shared"); */
+    break;
+
+  default:
+    g_assert_not_reached ();
+    break;
+  }
+
+/*   caja_file_info_add_string_attribute (file, */
+/* 					   "CajaShare::share_status", */
+/* 					   share_status); */
+  return CAJA_OPERATION_COMPLETE;
+}
+
+
+static void
+caja_share_cancel_update (CajaInfoProvider *provider,
+			      CajaOperationHandle *handle)
+{
+  CajaShareHandle *share_handle;
+	
+  share_handle = (CajaShareHandle*)handle;
+  share_handle->cancelled = TRUE;
+}
+
+static void 
+caja_share_info_provider_iface_init (CajaInfoProviderIface *iface)
+{
+  iface->update_file_info = caja_share_update_file_info;
+  iface->cancel_update = caja_share_cancel_update;
+}
+
+/*--------------------------------------------------------------------------*/
+/* caja_property_page_provider_get_pages
+ *  
+ * This function is called by Caja when it wants property page
+ * items from the extension.
+ *
+ * This function is called in the main thread before a property page
+ * is shown, so it should return quickly.
+ * 
+ * The function should return a GList of allocated CajaPropertyPage
+ * items.
+ */
+static GList *
+caja_share_get_property_pages (CajaPropertyPageProvider *provider,
+				   GList *files)
+{
+  PropertyPage *page;
+  GList *pages;
+  CajaPropertyPage *np_page;
+  CajaFileInfo *fileinfo;
+  ShareInfo *share_info;
+  gboolean is_shareable;
+
+  /* Only show the property page if 1 file is selected */
+  if (!files || files->next != NULL) {
+    return NULL;
+  }
+
+  fileinfo = CAJA_FILE_INFO (files->data);
+
+  get_share_info_for_file_info (fileinfo, &share_info, &is_shareable);
+  if (!is_shareable)
+    return NULL;
+
+  page = create_property_page (fileinfo);
+  gtk_widget_hide (page->button_cancel);
+  
+  if (share_info)
+    shares_free_share_info (share_info);
+
+  pages = NULL;
+  np_page = caja_property_page_new
+    ("CajaShare::property_page",
+     gtk_label_new (_("Share")),
+     page->main);
+  pages = g_list_append (pages, np_page);
+
+  return pages;
+}
+
+/*--------------------------------------------------------------------------*/
+static void 
+caja_share_property_page_provider_iface_init (CajaPropertyPageProviderIface *iface)
+{
+  iface->get_pages = caja_share_get_property_pages;
+}
+
+/*--------------------------------------------------------------------------*/
+static void
+caja_share_instance_init (CajaShare *share)
+{
+}
+
+/*--------------------------------------------------------------------------*/
+static void
+caja_share_class_init (CajaShareClass *class)
+{
+  parent_class = g_type_class_peek_parent (class);
+}
+
+/* caja_menu_provider_get_file_items
+ *  
+ * This function is called by Caja when it wants context menu
+ * items from the extension.
+ *
+ * This function is called in the main thread before a context menu
+ * is shown, so it should return quickly.
+ * 
+ * The function should return a GList of allocated CajaMenuItem
+ * items.
+ */
+
+static void
+button_cancel_clicked_cb (GtkButton *button, gpointer data)
+{
+  GtkWidget *window;
+
+  window = GTK_WIDGET (data);
+  gtk_widget_destroy (window);
+}
+
+static void
+share_this_folder_callback (CajaMenuItem *item,
+			    gpointer user_data)
+{
+  CajaFileInfo *fileinfo;
+  PropertyPage *page;
+  GtkWidget * window;
+
+  fileinfo = CAJA_FILE_INFO (user_data);
+  g_assert (fileinfo != NULL);
+
+  window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
+  gtk_window_set_title (GTK_WINDOW (window), _("Folder Sharing"));
+  page = create_property_page (fileinfo);
+  page->standalone_window = window;
+  g_signal_connect (page->button_cancel, "clicked",
+		    G_CALLBACK (button_cancel_clicked_cb), window);
+
+  gtk_container_add (GTK_CONTAINER (window), page->main);
+  gtk_widget_show (window);
+}
+
+static GList *
+caja_share_get_file_items (CajaMenuProvider *provider,
+			     GtkWidget *window,
+			     GList *files)
+{
+  GList *items;
+  CajaMenuItem *item;
+  CajaFileInfo *fileinfo;
+  ShareInfo *share_info;
+  gboolean is_shareable;
+
+  /* Only show the property page if 1 file is selected */
+  if (!files || files->next != NULL) {
+    return NULL;
+  }
+
+  fileinfo = CAJA_FILE_INFO (files->data);
+
+  get_share_info_for_file_info (fileinfo, &share_info, &is_shareable);
+
+  if (!is_shareable)
+    return NULL;
+
+  if (share_info)
+    shares_free_share_info (share_info);
+
+  /* We don't own a reference to the file info to keep it around, so acquire one */
+  g_object_ref (fileinfo);
+  
+  /* FMQ: change the label to "Share with Windows users"? */
+  item = caja_menu_item_new ("CajaShare::share",
+				 _("Sharing Options"),
+				 _("Share this Folder"),
+				 "folder-remote");
+  g_signal_connect (item, "activate",
+		    G_CALLBACK (share_this_folder_callback),
+		    fileinfo);
+  g_object_set_data_full (G_OBJECT (item), 
+			  "files",
+			  fileinfo,
+			  g_object_unref); /* Release our reference when the menu item goes away */
+
+  items = g_list_append (NULL, item);
+  return items;
+}
+
+/*--------------------------------------------------------------------------*/
+static void 
+caja_share_menu_provider_iface_init (CajaMenuProviderIface *iface)
+{
+	iface->get_file_items = caja_share_get_file_items;
+}
+
+/*--------------------------------------------------------------------------*/
+/* Type registration.  Because this type is implemented in a module
+ * that can be unloaded, we separate type registration from get_type().
+ * the type_register() function will be called by the module's
+ * initialization function. */
+static GType share_type = 0;
+
+#define CAJA_TYPE_SHARE  (caja_share_get_type ())
+
+static GType
+caja_share_get_type (void) 
+{
+  return share_type;
+}
+
+static void
+caja_share_register_type (GTypeModule *module)
+{
+  static const GTypeInfo info = {
+    sizeof (CajaShareClass),
+    (GBaseInitFunc) NULL,
+    (GBaseFinalizeFunc) NULL,
+    (GClassInitFunc) caja_share_class_init,
+    NULL, 
+    NULL,
+    sizeof (CajaShare),
+    0,
+    (GInstanceInitFunc) caja_share_instance_init,
+  };
+
+  share_type = g_type_module_register_type (module,
+					    G_TYPE_OBJECT,
+					    "CajaShare",
+					    &info, 0);
+
+  /* onglet share propri�t� */
+  static const GInterfaceInfo property_page_provider_iface_info = {
+    (GInterfaceInitFunc) caja_share_property_page_provider_iface_init,
+    NULL,
+    NULL
+  };
+	
+  g_type_module_add_interface (module,
+			       share_type,
+			       CAJA_TYPE_PROPERTY_PAGE_PROVIDER,
+			       &property_page_provider_iface_info);
+
+
+  /* premier page propri�t� ? */
+  static const GInterfaceInfo info_provider_iface_info = {
+    (GInterfaceInitFunc) caja_share_info_provider_iface_init,
+    NULL,
+    NULL
+  };
+
+  g_type_module_add_interface (module,
+			       share_type,
+			       CAJA_TYPE_INFO_PROVIDER,
+			       &info_provider_iface_info);
+
+  /* Menu right clik */
+  static const GInterfaceInfo menu_provider_iface_info = {
+    (GInterfaceInitFunc) caja_share_menu_provider_iface_init,
+    NULL,
+    NULL
+  };
+  
+  g_type_module_add_interface (module,
+			       share_type,
+			       CAJA_TYPE_MENU_PROVIDER,
+			       &menu_provider_iface_info);
+  
+}
+
+/* Extension module functions.  These functions are defined in 
+ * caja-extensions-types.h, and must be implemented by all 
+ * extensions. */
+
+/* Initialization function.  In addition to any module-specific 
+ * initialization, any types implemented by the module should 
+ * be registered here. */
+void
+caja_module_initialize (GTypeModule  *module)
+{
+  /*g_print ("Initializing mate-file-manager-share extension\n");*/
+
+  bindtextdomain(GETTEXT_PACKAGE, MATELOCALEDIR);
+  bind_textdomain_codeset(GETTEXT_PACKAGE, "UTF-8");
+
+  caja_share_register_type (module);
+}
+
+/* Perform module-specific shutdown. */
+void
+caja_module_shutdown   (void)
+{
+  /*g_print ("Shutting down mate-file-manager-share extension\n");*/
+  /* FIXME freeing */
+}
+
+/* List all the extension types.  */
+void 
+caja_module_list_types (const GType **types,
+			    int          *num_types)
+{
+  static GType type_list[1];
+	
+  type_list[0] = CAJA_TYPE_SHARE;
+
+  *types = type_list;
+  *num_types = 1;
+}