From 3fdb55938b0e70e042f893dadcc62cfe7a92a914 Mon Sep 17 00:00:00 2001
From: Stefan Rinkes <stefan.rinkes@gmail.com>
Date: Thu, 14 Apr 2011 17:47:35 +0200
Subject: [PATCH] pf plugin: init commit - import pf.c from pyr@openbsd.org

---
 src/pf.c | 136 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 136 insertions(+)
 create mode 100644 src/pf.c

diff --git a/src/pf.c b/src/pf.c
new file mode 100644
index 00000000..513634c0
--- /dev/null
+++ b/src/pf.c
@@ -0,0 +1,136 @@
+/*
+ * Copyright (c) 2010 Pierre-Yves Ritschard <pyr@openbsd.org>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <sys/types.h>
+#include <sys/ioctl.h>
+#include <sys/socket.h>
+
+#include <net/if.h>
+#include <net/pfvar.h>
+
+#include <limits.h>
+#include <fcntl.h>
+#include <paths.h>
+#include <string.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <errno.h>
+
+#ifndef TEST
+#include "collectd.h"
+#include "plugin.h"
+#else
+typedef u_int64_t	counter_t;
+#endif
+
+#define PF_SOCKET "/dev/pf"
+
+struct pfdata {
+	int		pd_dev;
+};
+
+static struct pfdata 	pd;
+
+static int		pf_init(void);
+static int		pf_read(void);
+static void		submit_counter(const char *, const char *, counter_t);
+
+void
+submit_counter(const char *type, const char *inst, counter_t val)
+{
+#ifndef TEST
+	value_t		values[1];
+	value_list_t	vl = VALUE_LIST_INIT;
+
+	values[0].counter = val;
+	vl.values = values;
+	vl.values_len = 1;
+
+	strlcpy(vl.host, hostname_g, sizeof(vl.host));
+	strlcpy(vl.plugin, "pf", sizeof(vl.plugin));
+	strlcpy(vl.type, type, sizeof(vl.type));
+	strlcpy(vl.type_instance, inst, sizeof(vl.type_instance));
+	plugin_dispatch_values(&vl);
+#else
+	printf("%s.%s: %lld\n", type, inst, val);
+#endif
+}
+
+
+int
+pf_init(void)
+{
+	struct pf_status	status;
+
+	memset(&pd, '\0', sizeof(pd));
+	
+	if ((pd.pd_dev = open(PF_SOCKET, O_RDWR)) == -1) {
+		return (-1);
+	}
+	if (ioctl(pd.pd_dev, DIOCGETSTATUS, &status) == -1) {
+		return (-1);
+	}
+        close(pd.pd_dev);
+	if (!status.running)
+		return (-1);
+	
+	return (0);
+}
+
+int
+pf_read(void)
+{
+	int			 i;
+	struct pf_status	 status;
+
+	char 		*cnames[] = PFRES_NAMES;
+	char 		*lnames[] = LCNT_NAMES;
+	char 		*names[] = { "searches", "inserts", "removals" };
+
+	if ((pd.pd_dev = open(PF_SOCKET, O_RDWR)) == -1) {
+		return (-1);
+	}
+	if (ioctl(pd.pd_dev, DIOCGETSTATUS, &status) == -1) {
+		return (-1);
+	}
+        close(pd.pd_dev);
+	for (i = 0; i < PFRES_MAX; i++)
+		submit_counter("pf_counters", cnames[i], status.counters[i]);
+	for (i = 0; i < LCNT_MAX; i++)
+		submit_counter("pf_limits", lnames[i], status.lcounters[i]);
+	for (i = 0; i < FCNT_MAX; i++)
+		submit_counter("pf_state", names[i], status.fcounters[i]);
+	for (i = 0; i < SCNT_MAX; i++)
+		submit_counter("pf_source", names[i], status.scounters[i]);
+	return (0);
+}
+
+#ifdef TEST
+int
+main(int argc, char *argv[])
+{
+	if (pf_init())
+		err(1, "pf_init");
+	if (pf_read())
+		err(1, "pf_read");
+	return (0);
+}
+#else
+void module_register(void) {
+	plugin_register_init("pf", pf_init);
+	plugin_register_read("pf", pf_read);
+}
+#endif
\ No newline at end of file
-- 
2.30.2