1 /*
2 * Copyright (c) 2010 Pierre-Yves Ritschard <pyr@openbsd.org>
3 * Copyright (c) 2011 Stefan Rinkes <stefan.rinkes@gmail.org>
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 */
18 #include "collectd.h"
19 #include "plugin.h"
20 #include "common.h"
22 #if HAVE_SYS_IOCTL_H
23 # include <sys/ioctl.h>
24 #endif
25 #if HAVE_SYS_SOCKET_H
26 # include <sys/socket.h>
27 #endif
28 #if HAVE_NET_IF_H
29 # include <net/if.h>
30 #endif
31 #if HAVE_NETINET_IN_H
32 # include <netinet/in.h>
33 #endif
35 #include <net/pfvar.h>
37 #ifndef FCNT_NAMES
38 # if FCNT_MAX != 3
39 # error "Unexpected value for FCNT_MAX"
40 # endif
41 # define FCNT_NAMES {"search", "insert", "removals", NULL};
42 #endif
44 #ifndef SCNT_NAMES
45 # if SCNT_MAX != 3
46 # error "Unexpected value for SCNT_MAX"
47 # endif
48 # define SCNT_NAMES {"search", "insert", "removals", NULL};
49 #endif
51 static char const *pf_reasons[PFRES_MAX+1] = PFRES_NAMES;
52 static char const *pf_lcounters[LCNT_MAX+1] = LCNT_NAMES;
53 static char const *pf_fcounters[FCNT_MAX+1] = FCNT_NAMES;
54 static char const *pf_scounters[SCNT_MAX+1] = SCNT_NAMES;
56 static char const *pf_device = "/dev/pf";
58 static void pf_submit (char const *type, char const *type_instance,
59 uint64_t val, _Bool is_gauge)
60 {
61 value_t values[1];
62 value_list_t vl = VALUE_LIST_INIT;
64 if (is_gauge)
65 values[0].gauge = (gauge_t) val;
66 else
67 values[0].derive = (derive_t) val;
69 vl.values = values;
70 vl.values_len = 1;
71 sstrncpy (vl.host, hostname_g, sizeof (vl.host));
72 sstrncpy (vl.plugin, "pf", sizeof (vl.plugin));
73 sstrncpy (vl.type, type, sizeof(vl.type));
74 sstrncpy (vl.type_instance, type_instance, sizeof(vl.type_instance));
76 plugin_dispatch_values(&vl);
77 } /* void pf_submit */
79 static int pf_read (void)
80 {
81 struct pf_status state;
82 int fd;
83 int status;
84 int i;
86 fd = open (pf_device, O_RDONLY);
87 if (fd < 0)
88 {
89 char errbuf[1024];
90 ERROR("pf plugin: Unable to open %s: %s",
91 pf_device,
92 sstrerror (errno, errbuf, sizeof (errbuf)));
93 return (-1);
94 }
96 memset (&state, 0, sizeof (state));
97 status = ioctl (fd, DIOCGETSTATUS, &state);
98 if (status != 0)
99 {
100 char errbuf[1024];
101 ERROR("pf plugin: ioctl(DIOCGETSTATUS) failed: %s",
102 sstrerror (errno, errbuf, sizeof (errbuf)));
103 close(fd);
104 return (-1);
105 }
107 close (fd);
108 fd = -1;
110 if (!state.running)
111 {
112 WARNING ("pf plugin: PF is not running.");
113 return (-1);
114 }
116 for (i = 0; i < PFRES_MAX; i++)
117 pf_submit ("pf_counters", pf_reasons[i], state.counters[i],
118 /* is gauge = */ 0);
119 for (i = 0; i < LCNT_MAX; i++)
120 pf_submit ("pf_limits", pf_lcounters[i], state.lcounters[i],
121 /* is gauge = */ 0);
122 for (i = 0; i < FCNT_MAX; i++)
123 pf_submit ("pf_state", pf_fcounters[i], state.fcounters[i],
124 /* is gauge = */ 0);
125 for (i = 0; i < SCNT_MAX; i++)
126 pf_submit ("pf_source", pf_scounters[i], state.scounters[i],
127 /* is gauge = */ 0);
129 pf_submit ("pf_states", "current", (uint32_t) state.states,
130 /* is gauge = */ 1);
132 return (0);
133 } /* int pf_read */
135 void module_register (void)
136 {
137 plugin_register_read ("pf", pf_read);
138 }