![Jörg Mayer](/assets/img/avatar_default.png)
winapi_cleanup tool written by Patrik Stridvall for the wine project. svn path=/trunk/; revision=6116
583 lines
19 KiB
C
583 lines
19 KiB
C
/* plugins.c
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* plugin routines
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*
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* $Id: plugins.c,v 1.59 2002/08/28 20:40:44 jmayer Exp $
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*
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* Ethereal - Network traffic analyzer
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* By Gerald Combs <gerald@ethereal.com>
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* Copyright 1999 Gerald Combs
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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#ifdef NEED_SNPRINTF_H
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# include "snprintf.h"
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#endif
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#include "plugins.h"
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#ifdef HAVE_PLUGINS
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#include <time.h>
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#ifdef HAVE_DIRENT_H
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#include <dirent.h>
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#endif
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#ifdef HAVE_DIRECT_H
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#include <direct.h>
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#endif
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#include <string.h>
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#include <stdlib.h>
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#include <errno.h>
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#ifdef HAVE_SYS_STAT_H
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#include <sys/stat.h>
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#endif
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#ifdef HAVE_UNISTD_H
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#include <unistd.h>
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#endif
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#include "filesystem.h"
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#include "prefs.h"
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#ifdef PLUGINS_NEED_ADDRESS_TABLE
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#include "conversation.h"
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#include "packet-giop.h"
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#include "packet-tpkt.h"
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#include "packet-tcp.h"
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#include "plugins/plugin_table.h"
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static plugin_address_table_t patable;
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#endif
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/* linked list of all plugins */
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plugin *plugin_list;
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#ifndef WIN32
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static gchar std_plug_dir[] = "/usr/lib/ethereal/plugins/" VERSION;
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static gchar local_plug_dir[] = "/usr/local/lib/ethereal/plugins/" VERSION;
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#endif
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static gchar *user_plug_dir = NULL;
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#define PLUGINS_DIR_NAME "plugins"
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/*
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* add a new plugin to the list
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* returns :
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* - 0 : OK
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* - ENOMEM : memory allocation problem
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* - EEXIST : the same plugin (i.e. name/version) was already registered.
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*/
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static int
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add_plugin(void *handle, gchar *name, gchar *version,
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void (*reg_handoff)(void))
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{
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plugin *new_plug, *pt_plug;
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pt_plug = plugin_list;
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if (!pt_plug) /* the list is empty */
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{
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new_plug = (plugin *)g_malloc(sizeof(plugin));
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if (new_plug == NULL) return ENOMEM;
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plugin_list = new_plug;
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}
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else
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{
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while (1)
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{
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/* check if the same name/version is already registered */
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if (!strcmp(pt_plug->name, name) &&
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!strcmp(pt_plug->version, version))
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{
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return EEXIST;
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}
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/* we found the last plugin in the list */
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if (pt_plug->next == NULL) break;
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pt_plug = pt_plug->next;
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}
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new_plug = (plugin *)g_malloc(sizeof(plugin));
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if (new_plug == NULL) return ENOMEM;
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pt_plug->next = new_plug;
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}
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new_plug->handle = handle;
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new_plug->name = name;
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new_plug->version = version;
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new_plug->reg_handoff = reg_handoff;
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new_plug->next = NULL;
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return 0;
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}
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/*
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* XXX - when we remove support for old-style plugins (which we should
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* probably do eventually, as all plugins should be written as new-style
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* ones), we may want to have "init_plugins()" merely save a pointer
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* to the plugin's "init" routine, just as we save a pointer to its
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* "reg_handoff" routine, and have a "register_all_plugins()" routine
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* to go through the list of plugins and call all of them.
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*
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* Then we'd have "epan_init()", or perhaps even something higher up
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* in the call tree, call "init_plugins()", and have "proto_init()"
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* call "register_all_plugins()" right after calling "register_all_protocols()";
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* this might be a bit cleaner.
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*/
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static void
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plugins_scan_dir(const char *dirname)
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{
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#define FILENAME_LEN 1024
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gchar *hack_path; /* pathname used to construct lt_lib_ext */
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gchar *lt_lib_ext; /* extension for loadable modules */
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DIR *dir; /* scanned directory */
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struct dirent *file; /* current file */
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gchar filename[FILENAME_LEN]; /* current file name */
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GModule *handle; /* handle returned by dlopen */
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gchar *name;
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gchar *version;
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void (*init)(void *);
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void (*reg_handoff)(void);
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gchar *dot;
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int cr;
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/*
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* We find the extension used on this platform for loadable modules
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* by the sneaky hack of calling "g_module_build_path" to build
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* the pathname for a module with an empty directory name and
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* empty module name, and then search for the last "." and use
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* everything from the last "." on.
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*
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* GLib 2.0 will probably define G_MODULE_SUFFIX as the extension
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* to use, but that's not checked into the GLib CVS tree yet,
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* and we can't use it on systems that don't have GLib 2.0.
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*/
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hack_path = g_module_build_path("", "");
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lt_lib_ext = strrchr(hack_path, '.');
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if (lt_lib_ext == NULL)
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{
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/*
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* Does this mean there *is* no extension? Assume so.
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*
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* XXX - the code below assumes that all loadable modules have
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* an extension....
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*/
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lt_lib_ext = "";
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}
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if ((dir = opendir(dirname)) != NULL)
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{
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while ((file = readdir(dir)) != NULL)
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{
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/* don't try to open "." and ".." */
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if (!(strcmp(file->d_name, "..") &&
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strcmp(file->d_name, "."))) continue;
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/* skip anything but files with lt_lib_ext */
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dot = strrchr(file->d_name, '.');
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if (dot == NULL || strcmp(dot, lt_lib_ext) != 0) continue;
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snprintf(filename, FILENAME_LEN, "%s" G_DIR_SEPARATOR_S "%s",
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dirname, file->d_name);
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if ((handle = g_module_open(filename, 0)) == NULL)
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{
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g_warning("Couldn't load module %s: %s", filename,
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g_module_error());
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continue;
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}
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name = (gchar *)file->d_name;
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if (g_module_symbol(handle, "version", (gpointer*)&version) == FALSE)
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{
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g_warning("The plugin %s has no version symbol", name);
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g_module_close(handle);
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continue;
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}
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/*
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* Old-style dissectors don't have a "plugin_reg_handoff()"
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* routine; we no longer support them.
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*
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* New-style dissectors have one, because, otherwise, there's
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* no way for them to arrange that they ever be called.
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*/
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if (g_module_symbol(handle, "plugin_reg_handoff",
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(gpointer*)®_handoff))
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{
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/*
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* We require it to have a "plugin_init()" routine.
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*/
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if (!g_module_symbol(handle, "plugin_init", (gpointer*)&init))
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{
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g_warning("The plugin %s has a plugin_reg_handoff symbol but no plugin_init routine",
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name);
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g_module_close(handle);
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continue;
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}
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/*
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* We have a "plugin_reg_handoff()" routine, so we don't
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* need the protocol, filter string, or dissector pointer.
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*/
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if ((cr = add_plugin(handle, g_strdup(file->d_name), version,
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reg_handoff)))
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{
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if (cr == EEXIST)
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fprintf(stderr, "The plugin %s, version %s\n"
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"was found in multiple directories\n", name, version);
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else
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fprintf(stderr, "Memory allocation problem\n"
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"when processing plugin %s, version %s\n",
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name, version);
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g_module_close(handle);
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continue;
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}
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/*
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* Call its init routine.
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*/
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#ifdef PLUGINS_NEED_ADDRESS_TABLE
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init(&patable);
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#else
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init(NULL);
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#endif
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}
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else
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{
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/*
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* This is an old-style dissector; warn that it won't
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* be used, as those aren't supported.
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*/
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fprintf(stderr,
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"The plugin %s, version %s is an old-style plugin;\n"
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"Those are no longer supported.\n", name, version);
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}
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}
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closedir(dir);
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}
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g_free(hack_path);
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}
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/*
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* init plugins
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*/
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void
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init_plugins(const char *plugin_dir)
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{
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#ifdef WIN32
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const char *datafile_dir;
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char *install_plugin_dir;
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#else
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struct stat std_dir_stat, local_dir_stat, plugin_dir_stat;
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#endif
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if (plugin_list == NULL) /* ensure init_plugins is only run once */
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{
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#ifdef PLUGINS_NEED_ADDRESS_TABLE
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/* Intialize address table */
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patable.p_check_col = check_col;
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patable.p_col_clear = col_clear;
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patable.p_col_add_fstr = col_add_fstr;
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patable.p_col_append_fstr = col_append_fstr;
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patable.p_col_prepend_fstr = col_prepend_fstr;
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patable.p_col_add_str = col_add_str;
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patable.p_col_append_str = col_append_str;
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patable.p_col_set_str = col_set_str;
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patable.p_register_init_routine = register_init_routine;
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patable.p_register_postseq_cleanup_routine = register_postseq_cleanup_routine;
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patable.p_match_strval = match_strval;
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patable.p_val_to_str = val_to_str;
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patable.p_conversation_new = conversation_new;
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patable.p_find_conversation = find_conversation;
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patable.p_conversation_set_dissector = conversation_set_dissector;
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patable.p_proto_register_protocol = proto_register_protocol;
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patable.p_proto_register_field_array = proto_register_field_array;
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patable.p_proto_register_subtree_array = proto_register_subtree_array;
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patable.p_dissector_add = dissector_add;
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patable.p_dissector_delete = dissector_delete;
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patable.p_dissector_add_handle = dissector_add_handle;
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patable.p_heur_dissector_add = heur_dissector_add;
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patable.p_register_dissector = register_dissector;
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patable.p_find_dissector = find_dissector;
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patable.p_create_dissector_handle = create_dissector_handle;
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patable.p_call_dissector = call_dissector;
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patable.p_tcp_dissect_pdus = tcp_dissect_pdus;
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patable.p_proto_is_protocol_enabled = proto_is_protocol_enabled;
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patable.p_proto_item_get_len = proto_item_get_len;
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patable.p_proto_item_set_len = proto_item_set_len;
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patable.p_proto_item_set_text = proto_item_set_text;
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patable.p_proto_item_append_text = proto_item_append_text;
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patable.p_proto_item_add_subtree = proto_item_add_subtree;
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patable.p_proto_tree_add_item = proto_tree_add_item;
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patable.p_proto_tree_add_item_hidden = proto_tree_add_item_hidden;
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patable.p_proto_tree_add_protocol_format = proto_tree_add_protocol_format;
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patable.p_proto_tree_add_bytes = proto_tree_add_bytes;
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patable.p_proto_tree_add_bytes_hidden = proto_tree_add_bytes_hidden;
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patable.p_proto_tree_add_bytes_format = proto_tree_add_bytes_format;
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patable.p_proto_tree_add_time = proto_tree_add_time;
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patable.p_proto_tree_add_time_hidden = proto_tree_add_time_hidden;
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patable.p_proto_tree_add_time_format = proto_tree_add_time_format;
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patable.p_proto_tree_add_ipxnet = proto_tree_add_ipxnet;
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patable.p_proto_tree_add_ipxnet_hidden = proto_tree_add_ipxnet_hidden;
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patable.p_proto_tree_add_ipxnet_format = proto_tree_add_ipxnet_format;
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patable.p_proto_tree_add_ipv4 = proto_tree_add_ipv4;
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patable.p_proto_tree_add_ipv4_hidden = proto_tree_add_ipv4_hidden;
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patable.p_proto_tree_add_ipv4_format = proto_tree_add_ipv4_format;
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patable.p_proto_tree_add_ipv6 = proto_tree_add_ipv6;
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patable.p_proto_tree_add_ipv6_hidden = proto_tree_add_ipv6_hidden;
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patable.p_proto_tree_add_ipv6_format = proto_tree_add_ipv6_format;
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patable.p_proto_tree_add_ether = proto_tree_add_ether;
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patable.p_proto_tree_add_ether_hidden = proto_tree_add_ether_hidden;
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patable.p_proto_tree_add_ether_format = proto_tree_add_ether_format;
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patable.p_proto_tree_add_string = proto_tree_add_string;
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patable.p_proto_tree_add_string_hidden = proto_tree_add_string_hidden;
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patable.p_proto_tree_add_string_format = proto_tree_add_string_format;
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patable.p_proto_tree_add_boolean = proto_tree_add_boolean;
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patable.p_proto_tree_add_boolean_hidden = proto_tree_add_boolean_hidden;
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patable.p_proto_tree_add_boolean_format = proto_tree_add_boolean_format;
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patable.p_proto_tree_add_double = proto_tree_add_double;
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patable.p_proto_tree_add_double_hidden = proto_tree_add_double_hidden;
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patable.p_proto_tree_add_double_format = proto_tree_add_double_format;
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patable.p_proto_tree_add_uint = proto_tree_add_uint;
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patable.p_proto_tree_add_uint_hidden = proto_tree_add_uint_hidden;
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patable.p_proto_tree_add_uint_format = proto_tree_add_uint_format;
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patable.p_proto_tree_add_int = proto_tree_add_int;
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patable.p_proto_tree_add_int_hidden = proto_tree_add_int_hidden;
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patable.p_proto_tree_add_int_format = proto_tree_add_int_format;
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patable.p_proto_tree_add_text = proto_tree_add_text;
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patable.p_tvb_new_subset = tvb_new_subset;
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patable.p_tvb_set_free_cb = tvb_set_free_cb;
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patable.p_tvb_set_child_real_data_tvbuff = tvb_set_child_real_data_tvbuff;
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patable.p_tvb_new_real_data = tvb_new_real_data;
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patable.p_tvb_length = tvb_length;
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patable.p_tvb_length_remaining = tvb_length_remaining;
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patable.p_tvb_bytes_exist = tvb_bytes_exist;
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patable.p_tvb_offset_exists = tvb_offset_exists;
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patable.p_tvb_reported_length = tvb_reported_length;
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patable.p_tvb_reported_length_remaining = tvb_reported_length_remaining;
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patable.p_tvb_get_guint8 = tvb_get_guint8;
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patable.p_tvb_get_ntohs = tvb_get_ntohs;
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patable.p_tvb_get_ntoh24 = tvb_get_ntoh24;
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patable.p_tvb_get_ntohl = tvb_get_ntohl;
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patable.p_tvb_get_letohs = tvb_get_letohs;
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patable.p_tvb_get_letoh24 = tvb_get_letoh24;
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patable.p_tvb_get_letohl = tvb_get_letohl;
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patable.p_tvb_memcpy = tvb_memcpy;
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patable.p_tvb_memdup = tvb_memdup;
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patable.p_tvb_get_ptr = tvb_get_ptr;
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patable.p_tvb_find_guint8 = tvb_find_guint8;
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patable.p_tvb_pbrk_guint8 = tvb_pbrk_guint8;
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patable.p_tvb_strnlen = tvb_strnlen;
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patable.p_tvb_format_text = tvb_format_text;
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patable.p_tvb_get_nstringz = tvb_get_nstringz;
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patable.p_tvb_get_nstringz0 = tvb_get_nstringz0;
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patable.p_tvb_find_line_end = tvb_find_line_end;
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patable.p_tvb_find_line_end_unquoted = tvb_find_line_end_unquoted;
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patable.p_tvb_strneql = tvb_strneql;
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patable.p_tvb_strncaseeql = tvb_strncaseeql;
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patable.p_tvb_bytes_to_str = tvb_bytes_to_str;
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patable.p_prefs_register_protocol = prefs_register_protocol;
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patable.p_prefs_register_uint_preference = prefs_register_uint_preference;
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patable.p_prefs_register_bool_preference = prefs_register_bool_preference;
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patable.p_prefs_register_enum_preference = prefs_register_enum_preference;
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patable.p_prefs_register_string_preference = prefs_register_string_preference;
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patable.p_register_giop_user = register_giop_user;
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patable.p_is_big_endian = is_big_endian;
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patable.p_get_CDR_encap_info = get_CDR_encap_info;
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patable.p_get_CDR_any = get_CDR_any;
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patable.p_get_CDR_boolean = get_CDR_boolean;
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patable.p_get_CDR_char = get_CDR_char;
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patable.p_get_CDR_double = get_CDR_double;
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patable.p_get_CDR_enum = get_CDR_enum;
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patable.p_get_CDR_fixed = get_CDR_fixed;
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patable.p_get_CDR_float = get_CDR_float;
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patable.p_get_CDR_interface = get_CDR_interface;
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patable.p_get_CDR_long = get_CDR_long;
|
|
patable.p_get_CDR_object = get_CDR_object;
|
|
patable.p_get_CDR_octet = get_CDR_octet;
|
|
patable.p_get_CDR_octet_seq = get_CDR_octet_seq;
|
|
patable.p_get_CDR_short = get_CDR_short;
|
|
patable.p_get_CDR_string = get_CDR_string;
|
|
patable.p_get_CDR_typeCode = get_CDR_typeCode;
|
|
patable.p_get_CDR_ulong = get_CDR_ulong;
|
|
patable.p_get_CDR_ushort = get_CDR_ushort;
|
|
patable.p_get_CDR_wchar = get_CDR_wchar;
|
|
patable.p_get_CDR_wstring = get_CDR_wstring;
|
|
|
|
patable.p_is_tpkt = is_tpkt;
|
|
patable.p_dissect_tpkt_encap = dissect_tpkt_encap;
|
|
|
|
patable.p_set_actual_length = set_actual_length;
|
|
patable.p_decode_boolean_bitfield = decode_boolean_bitfield;
|
|
patable.p_decode_numeric_bitfield = decode_numeric_bitfield;
|
|
patable.p_decode_enumerated_bitfield = decode_enumerated_bitfield;
|
|
patable.p_register_dissector_table = register_dissector_table;
|
|
patable.p_except_throw = except_throw;
|
|
patable.p_dissector_try_port = dissector_try_port;
|
|
|
|
patable.p_conversation_add_proto_data = conversation_add_proto_data;
|
|
patable.p_conversation_get_proto_data = conversation_get_proto_data;
|
|
patable.p_conversation_delete_proto_data = conversation_delete_proto_data;
|
|
patable.p_p_add_proto_data = p_add_proto_data;
|
|
patable.p_p_get_proto_data = p_get_proto_data;
|
|
#endif
|
|
|
|
#ifdef WIN32
|
|
/*
|
|
* On Windows, the data file directory is the installation
|
|
* directory; the plugins are stored under it.
|
|
*
|
|
* Assume we're running the installed version of Ethereal;
|
|
* on Windows, the data file directory is the directory
|
|
* in which the Ethereal binary resides.
|
|
*/
|
|
datafile_dir = get_datafile_dir();
|
|
install_plugin_dir = g_malloc(strlen(datafile_dir) + strlen("plugins") +
|
|
strlen(VERSION) + 3);
|
|
sprintf(install_plugin_dir, "%s\\plugins\\%s", datafile_dir, VERSION);
|
|
|
|
/*
|
|
* Make sure that pathname refers to a directory.
|
|
*/
|
|
if (test_for_directory(install_plugin_dir) != EISDIR) {
|
|
/*
|
|
* Either it doesn't refer to a directory or it
|
|
* refers to something that doesn't exist.
|
|
*
|
|
* Assume that means we're running, for example,
|
|
* a version of Ethereal we've built in a source
|
|
* directory, and fall back on the default
|
|
* installation directory, so you can put the plugins
|
|
* somewhere so they can be used with this version
|
|
* of Ethereal.
|
|
*
|
|
* XXX - should we, instead, have the Windows build
|
|
* procedure create a subdirectory of the "plugins"
|
|
* source directory, and copy the plugin DLLs there,
|
|
* so that you use the plugins from the build tree?
|
|
*/
|
|
install_plugin_dir =
|
|
g_strdup("C:\\Program Files\\Ethereal\\plugins\\" VERSION);
|
|
}
|
|
|
|
/*
|
|
* Scan that directory.
|
|
*/
|
|
plugins_scan_dir(install_plugin_dir);
|
|
g_free(install_plugin_dir);
|
|
#else
|
|
/*
|
|
* XXX - why not just scan "plugin_dir"? That's where we
|
|
* installed the plugins; if Ethereal isn't installed under
|
|
* "/usr" or "/usr/local", why should we search for its plugins
|
|
* there?
|
|
*/
|
|
plugins_scan_dir(std_plug_dir);
|
|
plugins_scan_dir(local_plug_dir);
|
|
if ((strcmp(std_plug_dir, plugin_dir) != 0) &&
|
|
(strcmp(local_plug_dir, plugin_dir) != 0))
|
|
{
|
|
if (stat(plugin_dir, &plugin_dir_stat) == 0)
|
|
{
|
|
/* check if plugin_dir is really different from std_dir and
|
|
* local_dir if they exist ! */
|
|
if (stat(std_plug_dir, &std_dir_stat) == 0)
|
|
{
|
|
if (stat(local_plug_dir, &local_dir_stat) == 0)
|
|
{
|
|
if ((plugin_dir_stat.st_dev != std_dir_stat.st_dev ||
|
|
plugin_dir_stat.st_ino != std_dir_stat.st_ino) &&
|
|
(plugin_dir_stat.st_dev != local_dir_stat.st_dev ||
|
|
plugin_dir_stat.st_ino != local_dir_stat.st_ino))
|
|
plugins_scan_dir(plugin_dir);
|
|
}
|
|
else
|
|
{
|
|
if ((plugin_dir_stat.st_dev != std_dir_stat.st_dev ||
|
|
plugin_dir_stat.st_ino != std_dir_stat.st_ino))
|
|
plugins_scan_dir(plugin_dir);
|
|
}
|
|
}
|
|
else if (stat(local_plug_dir, &local_dir_stat) == 0)
|
|
{
|
|
if ((plugin_dir_stat.st_dev != local_dir_stat.st_dev ||
|
|
plugin_dir_stat.st_ino != local_dir_stat.st_ino))
|
|
plugins_scan_dir(plugin_dir);
|
|
}
|
|
else plugins_scan_dir(plugin_dir);
|
|
}
|
|
}
|
|
#endif
|
|
if (!user_plug_dir)
|
|
user_plug_dir = get_persconffile_path(PLUGINS_DIR_NAME, FALSE);
|
|
plugins_scan_dir(user_plug_dir);
|
|
}
|
|
}
|
|
|
|
void
|
|
register_all_plugin_handoffs(void)
|
|
{
|
|
plugin *pt_plug;
|
|
|
|
/*
|
|
* For all new-style plugins, call the register-handoff routine.
|
|
* This is called from "proto_init()"; it must be called after
|
|
* "register_all_protocols()" and "init_plugins()" are called,
|
|
* in case one plugin registers itself either with a built-in
|
|
* dissector or with another plugin; we must first register all
|
|
* dissectors, whether built-in or plugin, so their dissector tables
|
|
* are initialized, and only then register all handoffs.
|
|
*
|
|
* We treat those protocols as always being enabled; they should
|
|
* use the standard mechanism for enabling/disabling protocols, not
|
|
* the plugin-specific mechanism.
|
|
*/
|
|
for (pt_plug = plugin_list; pt_plug != NULL; pt_plug = pt_plug->next)
|
|
(pt_plug->reg_handoff)();
|
|
}
|
|
#endif
|