pf plugin: init commit - import pf.c from pyr@openbsd.org

diff --git a/src/pf.c b/src/pf.c
new file mode 100644 (file)
index 0000000..513634c
--- /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
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