/**
* collectd - src/syslog.c
- * Copyright (C) 2007 Florian Forster
+ * Copyright (C) 2007 Florian Forster
*
- * 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.
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
*
- * 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.
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
*
- * 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 St, Fifth Floor, Boston, MA 02110-1301 USA
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
*
* Authors:
- * Florian Forster <octo at verplant.org>
+ * Florian Forster <octo at collectd.org>
**/
#include "collectd.h"
+
#include "common.h"
#include "plugin.h"
#if HAVE_SYSLOG_H
-# include <syslog.h>
+#include <syslog.h>
#endif
#if COLLECT_DEBUG
#endif /* COLLECT_DEBUG */
static int notif_severity = 0;
-static const char *config_keys[] =
-{
- "LogLevel",
- "NotifyLevel",
+static const char *config_keys[] = {
+ "LogLevel", "NotifyLevel",
};
static int config_keys_num = STATIC_ARRAY_SIZE(config_keys);
-static int sl_config (const char *key, const char *value)
-{
- if (strcasecmp (key, "LogLevel") == 0)
- {
- log_level = parse_log_severity (value);
- if (log_level < 0)
- return (1);
- }
- else if (strcasecmp (key, "NotifyLevel") == 0)
- {
- notif_severity = parse_notif_severity (value);
- if (notif_severity < 0)
- return (1);
- }
-
- return (0);
+static int sl_config(const char *key, const char *value) {
+ if (strcasecmp(key, "LogLevel") == 0) {
+ log_level = parse_log_severity(value);
+ if (log_level < 0) {
+ log_level = LOG_INFO;
+ ERROR("syslog: invalid loglevel [%s] defaulting to 'info'", value);
+ return 1;
+ }
+ } else if (strcasecmp(key, "NotifyLevel") == 0) {
+ notif_severity = parse_notif_severity(value);
+ if (notif_severity < 0)
+ return 1;
+ }
+
+ return 0;
} /* int sl_config */
-static void sl_log (int severity, const char *msg,
- user_data_t __attribute__((unused)) *user_data)
-{
- if (severity > log_level)
- return;
+static void sl_log(int severity, const char *msg,
+ user_data_t __attribute__((unused)) * user_data) {
+ if (severity > log_level)
+ return;
- syslog (severity, "%s", msg);
+ syslog(severity, "%s", msg);
} /* void sl_log */
-static int sl_shutdown (void)
-{
- closelog ();
+static int sl_shutdown(void) {
+ closelog();
- return (0);
+ return 0;
}
-static int sl_notification (const notification_t *n,
- user_data_t __attribute__((unused)) *user_data)
-{
- char buf[1024] = "";
- char *buf_ptr = buf;
- int buf_len = sizeof (buf);
- int status;
- int severity;
-
- if (n->severity > notif_severity)
- return (0);
-
- status = ssnprintf (buf_ptr, buf_len, "Notification: severity = %s",
- (n->severity == NOTIF_FAILURE) ? "FAILURE"
- : ((n->severity == NOTIF_WARNING) ? "WARNING"
- : ((n->severity == NOTIF_OKAY) ? "OKAY" : "UNKNOWN")));
- if (status > 0)
- {
- buf_ptr += status;
- buf_len -= status;
- }
-
-#define APPEND(bufptr, buflen, key, value) \
- if ((buflen > 0) && (strlen (value) > 0)) { \
- int status = ssnprintf (bufptr, buflen, ", %s = %s", key, value); \
- if (status > 0) { \
- bufptr += status; \
- buflen -= status; \
- } \
- }
- APPEND (buf_ptr, buf_len, "host", n->host);
- APPEND (buf_ptr, buf_len, "plugin", n->plugin);
- APPEND (buf_ptr, buf_len, "plugin_instance", n->plugin_instance);
- APPEND (buf_ptr, buf_len, "type", n->type);
- APPEND (buf_ptr, buf_len, "type_instance", n->type_instance);
- APPEND (buf_ptr, buf_len, "message", n->message);
-
- buf[sizeof (buf) - 1] = '\0';
-
- switch (n->severity)
- {
- case NOTIF_FAILURE:
- severity = LOG_ERR;
- break;
- case NOTIF_WARNING:
- severity = LOG_WARNING;
- break;
- case NOTIF_OKAY:
- severity = LOG_WARNING;
- break;
- default: severity = LOG_INFO;
- }
- sl_log (severity, buf, NULL);
-
- return (0);
+static int sl_notification(const notification_t *n,
+ user_data_t __attribute__((unused)) * user_data) {
+ char buf[1024] = "";
+ size_t offset = 0;
+ int log_severity;
+ const char *severity_string;
+ int status;
+
+ if (n->severity > notif_severity)
+ return 0;
+
+ switch (n->severity) {
+ case NOTIF_FAILURE:
+ severity_string = "FAILURE";
+ log_severity = LOG_ERR;
+ break;
+ case NOTIF_WARNING:
+ severity_string = "WARNING";
+ log_severity = LOG_WARNING;
+ break;
+ case NOTIF_OKAY:
+ severity_string = "OKAY";
+ log_severity = LOG_NOTICE;
+ break;
+ default:
+ severity_string = "UNKNOWN";
+ log_severity = LOG_ERR;
+ }
+
+#define BUFFER_ADD(...) \
+ do { \
+ status = snprintf(&buf[offset], sizeof(buf) - offset, __VA_ARGS__); \
+ if (status < 1) \
+ return -1; \
+ else if (((size_t)status) >= (sizeof(buf) - offset)) \
+ return -ENOMEM; \
+ else \
+ offset += ((size_t)status); \
+ } while (0)
+
+#define BUFFER_ADD_FIELD(field) \
+ do { \
+ if (n->field[0]) \
+ BUFFER_ADD(", " #field " = %s", n->field); \
+ } while (0)
+
+ BUFFER_ADD("Notification: severity = %s", severity_string);
+ BUFFER_ADD_FIELD(host);
+ BUFFER_ADD_FIELD(plugin);
+ BUFFER_ADD_FIELD(plugin_instance);
+ BUFFER_ADD_FIELD(type);
+ BUFFER_ADD_FIELD(type_instance);
+ BUFFER_ADD_FIELD(message);
+
+#undef BUFFER_ADD_FIELD
+#undef BUFFER_ADD
+
+ buf[sizeof(buf) - 1] = '\0';
+
+ sl_log(log_severity, buf, NULL);
+
+ return 0;
} /* int sl_notification */
-void module_register (void)
-{
- openlog ("collectd", LOG_CONS | LOG_PID, LOG_DAEMON);
+void module_register(void) {
+ openlog("collectd", LOG_CONS | LOG_PID, LOG_DAEMON);
- plugin_register_config ("syslog", sl_config, config_keys, config_keys_num);
- plugin_register_log ("syslog", sl_log, /* user_data = */ NULL);
- plugin_register_notification ("syslog", sl_notification, NULL);
- plugin_register_shutdown ("syslog", sl_shutdown);
+ plugin_register_config("syslog", sl_config, config_keys, config_keys_num);
+ plugin_register_log("syslog", sl_log, /* user_data = */ NULL);
+ plugin_register_notification("syslog", sl_notification, NULL);
+ plugin_register_shutdown("syslog", sl_shutdown);
} /* void module_register(void) */