1 /*
2 * Copyright (c) 2010 Pierre-Yves Ritschard
3 * Copyright (c) 2011 Stefan Rinkes
4 *
5 * Permission to use, copy, modify, and distribute this software for any
6 * purpose with or without fee is hereby granted, provided that the above
7 * copyright notice and this permission notice appear in all copies.
8 *
9 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
10 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
11 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
12 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
13 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
14 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
15 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
16 *
17 * Authors:
18 * Pierre-Yves Ritschard <pyr at openbsd.org>
19 * Stefan Rinkes <stefan.rinkes at gmail.org>
20 */
22 #include "collectd.h"
23 #include "plugin.h"
24 #include "common.h"
26 #if HAVE_SYS_IOCTL_H
27 # include <sys/ioctl.h>
28 #endif
29 #if HAVE_SYS_SOCKET_H
30 # include <sys/socket.h>
31 #endif
32 #if HAVE_NET_IF_H
33 # include <net/if.h>
34 #endif
35 #if HAVE_NETINET_IN_H
36 # include <netinet/in.h>
37 #endif
39 #include <net/pfvar.h>
41 #ifndef FCNT_NAMES
42 # if FCNT_MAX != 3
43 # error "Unexpected value for FCNT_MAX"
44 # endif
45 # define FCNT_NAMES {"search", "insert", "removals", NULL};
46 #endif
48 #ifndef SCNT_NAMES
49 # if SCNT_MAX != 3
50 # error "Unexpected value for SCNT_MAX"
51 # endif
52 # define SCNT_NAMES {"search", "insert", "removals", NULL};
53 #endif
55 static char const *pf_reasons[PFRES_MAX+1] = PFRES_NAMES;
56 static char const *pf_lcounters[LCNT_MAX+1] = LCNT_NAMES;
57 static char const *pf_fcounters[FCNT_MAX+1] = FCNT_NAMES;
58 static char const *pf_scounters[SCNT_MAX+1] = SCNT_NAMES;
60 static char const *pf_device = "/dev/pf";
62 static void pf_submit (char const *type, char const *type_instance,
63 uint64_t val, _Bool is_gauge)
64 {
65 value_t values[1];
66 value_list_t vl = VALUE_LIST_INIT;
68 if (is_gauge)
69 values[0].gauge = (gauge_t) val;
70 else
71 values[0].derive = (derive_t) val;
73 vl.values = values;
74 vl.values_len = 1;
75 sstrncpy (vl.host, hostname_g, sizeof (vl.host));
76 sstrncpy (vl.plugin, "pf", sizeof (vl.plugin));
77 sstrncpy (vl.type, type, sizeof(vl.type));
78 sstrncpy (vl.type_instance, type_instance, sizeof(vl.type_instance));
80 plugin_dispatch_values(&vl);
81 } /* void pf_submit */
83 static int pf_read (void)
84 {
85 struct pf_status state;
86 int fd;
87 int status;
88 int i;
90 fd = open (pf_device, O_RDONLY);
91 if (fd < 0)
92 {
93 char errbuf[1024];
94 ERROR("pf plugin: Unable to open %s: %s",
95 pf_device,
96 sstrerror (errno, errbuf, sizeof (errbuf)));
97 return (-1);
98 }
100 memset (&state, 0, sizeof (state));
101 status = ioctl (fd, DIOCGETSTATUS, &state);
102 if (status != 0)
103 {
104 char errbuf[1024];
105 ERROR("pf plugin: ioctl(DIOCGETSTATUS) failed: %s",
106 sstrerror (errno, errbuf, sizeof (errbuf)));
107 close(fd);
108 return (-1);
109 }
111 close (fd);
112 fd = -1;
114 if (!state.running)
115 {
116 WARNING ("pf plugin: PF is not running.");
117 return (-1);
118 }
120 for (i = 0; i < PFRES_MAX; i++)
121 pf_submit ("pf_counters", pf_reasons[i], state.counters[i],
122 /* is gauge = */ 0);
123 for (i = 0; i < LCNT_MAX; i++)
124 pf_submit ("pf_limits", pf_lcounters[i], state.lcounters[i],
125 /* is gauge = */ 0);
126 for (i = 0; i < FCNT_MAX; i++)
127 pf_submit ("pf_state", pf_fcounters[i], state.fcounters[i],
128 /* is gauge = */ 0);
129 for (i = 0; i < SCNT_MAX; i++)
130 pf_submit ("pf_source", pf_scounters[i], state.scounters[i],
131 /* is gauge = */ 0);
133 pf_submit ("pf_states", "current", (uint32_t) state.states,
134 /* is gauge = */ 1);
136 return (0);
137 } /* int pf_read */
139 void module_register (void)
140 {
141 plugin_register_read ("pf", pf_read);
142 }