114 lines
3.5 KiB
C
114 lines
3.5 KiB
C
/***************************************************************************
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* Copyright (C) 03/2005 by Olaf Rempel *
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* razzor@kopf-tisch.de *
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (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 *
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* Free Software Foundation, Inc., *
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* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
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***************************************************************************/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <dlfcn.h>
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#include "plugin.h"
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#include "configfile.h"
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#include "logging.h"
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#include "netpkt.h"
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#include "list.h"
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#include "event.h"
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#define BUFSIZE 512
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static LIST_HEAD(plugin_list);
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static int plugin_load(const char *filename, void *privdata)
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{
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char *plugin_dir = (char *)privdata;
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char *fullname = malloc(BUFSIZE);
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if (fullname == NULL) {
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log_print(LOG_ERROR, "plugin_load: out of memory");
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return -1;
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}
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int len = snprintf(fullname, BUFSIZE, "%s/%s", plugin_dir, filename);
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if (len < 0 || len >= BUFSIZE) {
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log_print(LOG_ERROR, "plugin_load: file name too long: %s/%s", plugin_dir, filename);
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free(fullname);
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return -1;
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}
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dlerror();
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void *dlref = dlopen(fullname, RTLD_NOW);
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if (dlref == NULL) {
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log_print(LOG_WARN, "plugin_load: %s", dlerror());
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free(fullname);
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return -1;
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}
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struct hlswmaster_plugin *plugin = dlsym(dlref, "plugin");
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if (plugin == NULL) {
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log_print(LOG_WARN, "plugin_load: invalid plugin '%s'", fullname);
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dlclose(dlref);
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free(fullname);
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return -1;
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}
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log_print(LOG_INFO, "loading plugin '%s'", plugin->name);
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if (plugin->init == NULL || (plugin->init() == 0)) {
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list_add_tail(&plugin->list, &plugin_list);
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free(fullname);
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return 0;
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}
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log_print(LOG_WARN, "plugin_load: failed to load '%s'", plugin->name);
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dlclose(dlref);
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free(fullname);
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return -1;
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}
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int plugins_scan(void)
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{
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struct hlswmaster_plugin *plugin;
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list_for_each_entry(plugin, &plugin_list, list)
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if (plugin->scan && !plugin->scan())
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log_print(LOG_WARN, "plugin %s: scan error", plugin->name);
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return 0;
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}
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int plugins_parse(struct net_pkt *pkt)
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{
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int retval;
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struct hlswmaster_plugin *plugin;
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list_for_each_entry(plugin, &plugin_list, list)
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if (plugin->parse && (retval = plugin->parse(pkt)))
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return retval;
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return PARSE_REJECT;
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}
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int plugin_init(void)
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{
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char *dir = config_get_string("global", "plugin_dir", ".");
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int cnt = config_get_strings("global", "plugin", plugin_load, (void *)dir);
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log_print(LOG_INFO, "%d plugins loaded", cnt);
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return 0;
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}
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