532f102662
svn path=/trunk/; revision=21851
166 lines
4.2 KiB
C
166 lines
4.2 KiB
C
/* wtap.h
|
|
*
|
|
* $Id$
|
|
*
|
|
* Wiretap Library
|
|
* Copyright (c) 1998 by Gilbert Ramirez <gram@alumni.rice.edu>
|
|
*
|
|
* 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 Street, Fifth Floor, Boston, MA 02110-1301, USA.
|
|
*/
|
|
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
#include "config.h"
|
|
#endif
|
|
|
|
#include <glib.h>
|
|
#include <gmodule.h>
|
|
|
|
/* Why do we check for these symbols here? we do not include any real
|
|
config.h so these symbols will never be true.
|
|
*/
|
|
#ifdef HAVE_DIRENT_H
|
|
#include <dirent.h>
|
|
#endif
|
|
|
|
/* Since config.h is broken */
|
|
#if GLIB_MAJOR_VERSION < 2
|
|
#ifndef DIR
|
|
#include <dirent.h>
|
|
#endif
|
|
#endif
|
|
|
|
#ifdef HAVE_DIRECT_H
|
|
#include <direct.h>
|
|
#endif
|
|
|
|
#include <string.h>
|
|
#include <stdlib.h>
|
|
#include <errno.h>
|
|
|
|
#ifdef HAVE_UNISTD_H
|
|
#include <unistd.h>
|
|
#endif
|
|
|
|
#include "wtap.h"
|
|
#include "file_util.h"
|
|
|
|
#define PLUGINS_DIR_NAME "wiretap_plugins"
|
|
|
|
static gboolean plugins_loaded = FALSE;
|
|
|
|
void wtap_load_plugins(char* dirname) {
|
|
|
|
#define FILENAME_LEN 1024
|
|
|
|
ETH_DIR *dir; /* scanned directory */
|
|
ETH_DIRENT *file; /* current file */
|
|
const char *name;
|
|
#if GLIB_MAJOR_VERSION < 2
|
|
gchar *hack_path; /* pathname used to construct lt_lib_ext */
|
|
gchar *lt_lib_ext; /* extension for loadable modules */
|
|
#endif
|
|
gchar filename[FILENAME_LEN]; /* current file name */
|
|
GModule *handle; /* handle returned by dlopen */
|
|
gchar *version;
|
|
gpointer gp;
|
|
gchar *dot;
|
|
|
|
if (plugins_loaded || ! dirname) return;
|
|
|
|
plugins_loaded = TRUE;
|
|
|
|
#if GLIB_MAJOR_VERSION < 2
|
|
/*
|
|
* We find the extension used on this platform for loadable modules
|
|
* by the sneaky hack of calling "g_module_build_path" to build
|
|
* the pathname for a module with an empty directory name and
|
|
* empty module name, and then search for the last "." and use
|
|
* everything from the last "." on.
|
|
*/
|
|
hack_path = g_module_build_path("", "");
|
|
lt_lib_ext = strrchr(hack_path, '.');
|
|
if (lt_lib_ext == NULL)
|
|
{
|
|
static gchar null_str[1] = {0};
|
|
/*
|
|
* Does this mean there *is* no extension? Assume so.
|
|
*
|
|
* XXX - the code below assumes that all loadable modules have
|
|
* an extension....
|
|
*/
|
|
lt_lib_ext = null_str;
|
|
}
|
|
#endif
|
|
|
|
if ((dir = eth_dir_open(dirname, 0, NULL)) != NULL)
|
|
{
|
|
while ((file = eth_dir_read_name(dir)) != NULL)
|
|
{
|
|
name = eth_dir_get_name(file);
|
|
#if GLIB_MAJOR_VERSION < 2
|
|
/* don't try to open "." and ".." */
|
|
if (!(strcmp(name, "..") &&
|
|
strcmp(name, ".")))
|
|
continue;
|
|
|
|
/* skip anything but files with lt_lib_ext */
|
|
dot = strrchr(name, '.');
|
|
if (dot == NULL || strcmp(dot, lt_lib_ext) != 0)
|
|
continue;
|
|
|
|
#else /* GLIB 2 */
|
|
/*
|
|
* GLib 2.x defines G_MODULE_SUFFIX as the extension used on
|
|
* this platform for loadable modules.
|
|
*/
|
|
/* skip anything but files with G_MODULE_SUFFIX */
|
|
dot = strrchr(name, '.');
|
|
if (dot == NULL || strcmp(dot+1, G_MODULE_SUFFIX) != 0)
|
|
continue;
|
|
|
|
#endif
|
|
g_snprintf(filename, FILENAME_LEN, "%s" G_DIR_SEPARATOR_S "%s",
|
|
dirname, name);
|
|
if ((handle = g_module_open(filename, 0)) == NULL)
|
|
{
|
|
g_warning("Couldn't load module %s: %s", filename,
|
|
g_module_error());
|
|
continue;
|
|
}
|
|
if (!g_module_symbol(handle, "version", &gp))
|
|
{
|
|
g_warning("The plugin %s has no version symbol", name);
|
|
g_module_close(handle);
|
|
continue;
|
|
}
|
|
version = gp;
|
|
|
|
if (g_module_symbol(handle, "register_wtap_module", &gp))
|
|
{
|
|
void (*register_wtap_module)(void) = gp;
|
|
register_wtap_module();
|
|
}
|
|
}
|
|
eth_dir_close(dir);
|
|
}
|
|
#if GLIB_MAJOR_VERSION < 2
|
|
g_free(hack_path);
|
|
g_free(dirname);
|
|
#endif
|
|
|
|
}
|
|
|