173 lines
4.3 KiB
C
173 lines
4.3 KiB
C
/***************************************************************************
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* Copyright (C) 06/2006 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 <string.h>
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#include <dlfcn.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <stdarg.h>
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#include "list.h"
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#include "plugins.h"
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#include "configfile.h"
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#include "logging.h"
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#include "network.h"
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#include "rrdtool.h"
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#define BUFSIZE 1024
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static LIST_HEAD(plugin_list);
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static char *hostname = NULL;
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static void plugin_load(char *filename)
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{
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struct sammler_plugin *plugin = NULL;
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static char *plugin_dir;
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char *buffer;
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void *tmp;
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int len;
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if (plugin_dir == NULL)
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plugin_dir = config_get_string("global", "plugin_dir", ".");
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buffer = malloc(BUFSIZE);
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if (buffer == NULL) {
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log_print(LOG_ERROR, "plugin_load: out of memory");
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return;
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}
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len = snprintf(buffer, 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(buffer);
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return;
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}
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dlerror();
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tmp = dlopen(buffer, RTLD_NOW);
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if (tmp == NULL) {
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log_print(LOG_ERROR, "plugin_load: dlopen: %s", dlerror());
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free(buffer);
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return;
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}
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plugin = dlsym(tmp, "plugin");
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if (plugin == NULL) {
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log_print(LOG_ERROR, "plugin_load: failed to load '%s'", filename);
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dlclose(tmp);
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free(buffer);
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return;
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}
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log_print(LOG_INFO, "Plugin '%s' loaded", plugin->name);
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list_add_tail(&plugin->list, &plugin_list);
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free(buffer);
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return;
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}
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void plugin_load_all()
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{
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struct conf_section *section;
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struct conf_tupel *tupel;
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section = config_get_section("global");
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if (section == NULL)
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return;
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list_for_each_entry(tupel, §ion->tupel, list)
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if (!strcmp(tupel->option, "plugin"))
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plugin_load(tupel->parameter);
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}
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void plugins_probe(void)
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{
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struct sammler_plugin *plugin;
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list_for_each_entry(plugin, &plugin_list, list)
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plugin->probe();
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net_commit();
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}
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char ** plugins_get_ds(char *name, int ds_id)
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{
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struct sammler_plugin *plugin;
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list_for_each_entry(plugin, &plugin_list, list) {
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if (strcmp(plugin->name, name))
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continue;
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return plugin->get_ds(ds_id);
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}
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return NULL;
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}
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void probe_submit(struct sammler_plugin *plugin, char *filename, int ds_id, const char *fmt, ... )
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{
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va_list az;
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char *buffer;
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int len;
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if (hostname == NULL)
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hostname = config_get_string("global", "hostname", "localhost");
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buffer = malloc(BUFSIZE);
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if (buffer == NULL) {
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log_print(LOG_ERROR, "probe_submit: out of memory");
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return;
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}
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va_start(az, fmt);
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len = vsnprintf(buffer, BUFSIZE, fmt, az);
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va_end(az);
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if (len < 0 || len >= BUFSIZE) {
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log_print(LOG_ERROR, "probe_submit: %s arguments too long", plugin->name);
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free(buffer);
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return;
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}
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rrd_submit(hostname, plugin->name, filename, ds_id, buffer);
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net_submit(hostname, plugin->name, filename, ds_id, buffer);
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free(buffer);
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}
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int strsplit(char *string, char **fields, size_t size)
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{
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size_t i = 0;
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char *ptr = string;
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while ((fields[i] = strtok(ptr, " \n\t")) != NULL) {
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ptr = NULL;
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i++;
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if (i >= size)
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break;
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}
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return i;
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}
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