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/* GIO - GLib Input, Output and Streaming Library
*
* Copyright (C) 2006-2007 Red Hat, Inc.
*
* SPDX-License-Identifier: LGPL-2.1-or-later
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General
* Public License along with this library; if not, see <http://www.gnu.org/licenses/>.
*
* Author: Alexander Larsson <alexl@redhat.com>
*/
#include "config.h"
#include <gio/gio.h>
#include "giomodule-priv.h"
#include <gstdio.h>
#include <errno.h>
#include <locale.h>
#include "glib/glib-private.h"
static gboolean
is_valid_module_name (const gchar *basename)
{
#if !defined(G_OS_WIN32) && !defined(G_WITH_CYGWIN)
#if defined(__APPLE__)
return g_str_has_prefix (basename, "lib") &&
(g_str_has_suffix (basename, ".so") ||
g_str_has_suffix (basename, ".dylib"));
#else
return
g_str_has_prefix (basename, "lib") &&
g_str_has_suffix (basename, ".so");
#endif
#else
return g_str_has_suffix (basename, ".dll");
#endif
}
static void
query_dir (const char *dirname)
{
GString *data;
GDir *dir;
GList *list = NULL, *iterator = NULL;
const char *name;
char *cachename;
char **(* query) (void);
GError *error;
int i;
if (!g_module_supported ())
return;
error = NULL;
dir = g_dir_open (dirname, 0, &error);
if (!dir)
{
g_printerr ("Unable to open directory %s: %s\n", dirname, error->message);
g_error_free (error);
return;
}
data = g_string_new ("");
while ((name = g_dir_read_name (dir)))
list = g_list_prepend (list, g_strdup (name));
list = g_list_sort (list, (GCompareFunc) g_strcmp0);
for (iterator = list; iterator; iterator = iterator->next)
{
GModule *module;
gchar *path;
char **extension_points;
name = iterator->data;
if (!is_valid_module_name (name))
continue;
path = g_build_filename (dirname, name, NULL);
module = g_module_open_full (path, G_MODULE_BIND_LAZY | G_MODULE_BIND_LOCAL, &error);
g_free (path);
if (module)
{
gchar *modulename;
gchar *symname;
modulename = _g_io_module_extract_name (name);
symname = g_strconcat ("g_io_", modulename, "_query", NULL);
g_module_symbol (module, symname, (gpointer) &query);
g_free (symname);
g_free (modulename);
if (!query)
{
/* Fallback to old name */
g_module_symbol (module, "g_io_module_query", (gpointer) &query);
}
if (query)
{
extension_points = query ();
if (extension_points)
{
g_string_append_printf (data, "%s: ", name);
for (i = 0; extension_points[i] != NULL; i++)
g_string_append_printf (data, "%s%s", i == 0 ? "" : ",", extension_points[i]);
g_string_append (data, "\n");
g_strfreev (extension_points);
}
}
g_module_close (module);
}
else
{
g_debug ("Failed to open module %s: %s", name, error->message);
}
g_clear_error (&error);
}
g_dir_close (dir);
g_list_free_full (list, g_free);
cachename = g_build_filename (dirname, "giomodule.cache", NULL);
if (data->len > 0)
{
error = NULL;
if (!g_file_set_contents (cachename, data->str, data->len, &error))
{
g_printerr ("Unable to create %s: %s\n", cachename, error->message);
g_error_free (error);
}
}
else
{
if (g_unlink (cachename) != 0 && errno != ENOENT)
{
int errsv = errno;
g_printerr ("Unable to unlink %s: %s\n", cachename, g_strerror (errsv));
}
}
g_free (cachename);
g_string_free (data, TRUE);
}
int
main (gint argc,
gchar *argv[])
{
int i;
if (argc <= 1)
{
g_print ("Usage: gio-querymodules <directory1> [<directory2> ...]\n");
g_print ("Will update giomodule.cache in the listed directories\n");
return 1;
}
setlocale (LC_ALL, GLIB_DEFAULT_LOCALE);
/* Be defensive and ensure we're linked to GObject */
g_type_ensure (G_TYPE_OBJECT);
for (i = 1; i < argc; i++)
query_dir (argv[i]);
return 0;
}
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