2 * collectd - src/tcpconns.c
3 * Copyright (C) 2007,2008 Florian octo Forster
4 * Copyright (C) 2008 Michael Stapelberg
6 * This program is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License as published by the
8 * Free Software Foundation; only version 2 of the License is applicable.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License for more details.
15 * You should have received a copy of the GNU General Public License along
16 * with this program; if not, write to the Free Software Foundation, Inc.,
17 * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
20 * Florian octo Forster <octo at collectd.org>
21 * Michael Stapelberg <michael+git at stapelberg.de>
25 * Code within `HAVE_LIBKVM_NLIST' blocks is provided under the following
28 * $collectd: parts of tcpconns.c, 2008/08/08 03:48:30 Michael Stapelberg $
29 * $OpenBSD: inet.c,v 1.100 2007/06/19 05:28:30 ray Exp $
30 * $NetBSD: inet.c,v 1.14 1995/10/03 21:42:37 thorpej Exp $
32 * Copyright (c) 1983, 1988, 1993
33 * The Regents of the University of California. All rights reserved.
35 * Redistribution and use in source and binary forms, with or without
36 * modification, are permitted provided that the following conditions
38 * 1. Redistributions of source code must retain the above copyright
39 * notice, this list of conditions and the following disclaimer.
40 * 2. Redistributions in binary form must reproduce the above copyright
41 * notice, this list of conditions and the following disclaimer in the
42 * documentation and/or other materials provided with the distribution.
43 * 3. Neither the name of the University nor the names of its contributors
44 * may be used to endorse or promote products derived from this software
45 * without specific prior written permission.
47 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
48 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
49 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
50 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
51 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
52 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
53 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
54 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
55 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
56 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
64 #if defined(__OpenBSD__) || defined(__NetBSD__)
65 #undef HAVE_SYSCTLBYNAME /* force HAVE_LIBKVM_NLIST path */
68 #if !KERNEL_LINUX && !HAVE_SYSCTLBYNAME && !HAVE_LIBKVM_NLIST && !KERNEL_AIX
69 # error "No applicable input method."
73 # include <asm/types.h>
74 # include <linux/netlink.h>
75 #if HAVE_LINUX_INET_DIAG_H
76 # include <linux/inet_diag.h>
78 # include <arpa/inet.h>
79 /* #endif KERNEL_LINUX */
81 #elif HAVE_SYSCTLBYNAME
82 # include <sys/socketvar.h>
83 # include <sys/sysctl.h>
85 /* Some includes needed for compiling on FreeBSD */
88 # include <sys/types.h>
94 # include <net/route.h>
95 # include <netinet/in.h>
96 # include <netinet/in_systm.h>
97 # include <netinet/ip.h>
98 # include <netinet/ip6.h>
99 # include <netinet/in_pcb.h>
100 # include <netinet/ip_var.h>
101 # include <netinet/tcp.h>
102 # include <netinet/tcpip.h>
103 # include <netinet/tcp_seq.h>
104 # include <netinet/tcp_var.h>
105 /* #endif HAVE_SYSCTLBYNAME */
107 /* This is for OpenBSD and NetBSD. */
108 #elif HAVE_LIBKVM_NLIST
109 # include <sys/queue.h>
110 # include <net/route.h>
111 # include <netinet/in.h>
112 # include <netinet/in_systm.h>
113 # include <netinet/ip.h>
114 # include <netinet/ip_var.h>
115 # include <netinet/in_pcb.h>
116 # include <netinet/tcp.h>
117 # include <netinet/tcp_timer.h>
118 # include <netinet/tcp_var.h>
120 # include <arpa/inet.h>
121 # if !defined(HAVE_BSD_NLIST_H) || !HAVE_BSD_NLIST_H
123 # else /* HAVE_BSD_NLIST_H */
124 # include <bsd/nlist.h>
127 /* #endif HAVE_LIBKVM_NLIST */
130 # include <arpa/inet.h>
131 # include <sys/socketvar.h>
132 #endif /* KERNEL_AIX */
135 #if HAVE_STRUCT_LINUX_INET_DIAG_REQ
138 struct inet_diag_req r;
142 static const char *tcp_state[] =
158 # define TCP_STATE_LISTEN 10
159 # define TCP_STATE_MIN 1
160 # define TCP_STATE_MAX 11
161 /* #endif KERNEL_LINUX */
163 #elif HAVE_SYSCTLBYNAME
164 static const char *tcp_state[] =
179 # define TCP_STATE_LISTEN 1
180 # define TCP_STATE_MIN 0
181 # define TCP_STATE_MAX 10
182 /* #endif HAVE_SYSCTLBYNAME */
184 #elif HAVE_LIBKVM_NLIST
185 static const char *tcp_state[] =
201 static u_long inpcbtable_off = 0;
202 struct inpcbtable *inpcbtable_ptr = NULL;
204 # define TCP_STATE_LISTEN 1
205 # define TCP_STATE_MIN 1
206 # define TCP_STATE_MAX 10
207 /* #endif HAVE_LIBKVM_NLIST */
210 static const char *tcp_state[] =
225 # define TCP_STATE_LISTEN 1
226 # define TCP_STATE_MIN 0
227 # define TCP_STATE_MAX 10
229 struct netinfo_conn {
233 struct in6_addr dstaddr;
236 struct in6_addr srcaddr;
237 uint32_t unknow4[36];
242 struct netinfo_header {
247 # define NETINFO_TCP 3
248 extern int netinfo (int proto, void *data, int *size, int n);
249 #endif /* KERNEL_AIX */
251 #define PORT_COLLECT_LOCAL 0x01
252 #define PORT_COLLECT_REMOTE 0x02
253 #define PORT_IS_LISTENING 0x04
255 typedef struct port_entry_s
259 uint32_t count_local[TCP_STATE_MAX + 1];
260 uint32_t count_remote[TCP_STATE_MAX + 1];
261 struct port_entry_s *next;
264 static const char *config_keys[] =
271 static int config_keys_num = STATIC_ARRAY_SIZE (config_keys);
273 static int port_collect_listening = 0;
274 static int port_collect_total = 0;
275 static port_entry_t *port_list_head = NULL;
276 static uint32_t count_total[TCP_STATE_MAX + 1];
279 #if HAVE_STRUCT_LINUX_INET_DIAG_REQ
280 /* This depends on linux inet_diag_req because if this structure is missing,
281 * sequence_number is useless and we get a compilation warning.
283 static uint32_t sequence_number = 0;
291 } linux_source = SRC_DUNNO;
294 static void conn_prepare_vl (value_list_t *vl, value_t *values)
298 sstrncpy (vl->host, hostname_g, sizeof (vl->host));
299 sstrncpy (vl->plugin, "tcpconns", sizeof (vl->plugin));
300 sstrncpy (vl->type, "tcp_connections", sizeof (vl->type));
303 static void conn_submit_port_entry (port_entry_t *pe)
306 value_list_t vl = VALUE_LIST_INIT;
309 conn_prepare_vl (&vl, values);
311 if (((port_collect_listening != 0) && (pe->flags & PORT_IS_LISTENING))
312 || (pe->flags & PORT_COLLECT_LOCAL))
314 ssnprintf (vl.plugin_instance, sizeof (vl.plugin_instance),
315 "%"PRIu16"-local", pe->port);
317 for (i = 1; i <= TCP_STATE_MAX; i++)
319 vl.values[0].gauge = pe->count_local[i];
321 sstrncpy (vl.type_instance, tcp_state[i], sizeof (vl.type_instance));
323 plugin_dispatch_values (&vl);
327 if (pe->flags & PORT_COLLECT_REMOTE)
329 ssnprintf (vl.plugin_instance, sizeof (vl.plugin_instance),
330 "%"PRIu16"-remote", pe->port);
332 for (i = 1; i <= TCP_STATE_MAX; i++)
334 vl.values[0].gauge = pe->count_remote[i];
336 sstrncpy (vl.type_instance, tcp_state[i], sizeof (vl.type_instance));
338 plugin_dispatch_values (&vl);
341 } /* void conn_submit */
343 static void conn_submit_port_total (void)
346 value_list_t vl = VALUE_LIST_INIT;
349 conn_prepare_vl (&vl, values);
351 sstrncpy (vl.plugin_instance, "all", sizeof (vl.plugin_instance));
353 for (i = 1; i <= TCP_STATE_MAX; i++)
355 vl.values[0].gauge = count_total[i];
357 sstrncpy (vl.type_instance, tcp_state[i], sizeof (vl.type_instance));
359 plugin_dispatch_values (&vl);
363 static void conn_submit_all (void)
367 if (port_collect_total)
368 conn_submit_port_total ();
370 for (pe = port_list_head; pe != NULL; pe = pe->next)
371 conn_submit_port_entry (pe);
372 } /* void conn_submit_all */
374 static port_entry_t *conn_get_port_entry (uint16_t port, int create)
378 ret = port_list_head;
381 if (ret->port == port)
386 if ((ret == NULL) && (create != 0))
388 ret = malloc (sizeof (*ret));
391 memset (ret, '\0', sizeof (port_entry_t));
394 ret->next = port_list_head;
395 port_list_head = ret;
399 } /* port_entry_t *conn_get_port_entry */
401 /* Removes ports that were added automatically due to the `ListeningPorts'
402 * setting but which are no longer listening. */
403 static void conn_reset_port_entry (void)
405 port_entry_t *prev = NULL;
406 port_entry_t *pe = port_list_head;
408 memset (&count_total, '\0', sizeof(count_total));
412 /* If this entry was created while reading the files (ant not when handling
413 * the configuration) remove it now. */
414 if ((pe->flags & (PORT_COLLECT_LOCAL
415 | PORT_COLLECT_REMOTE
416 | PORT_IS_LISTENING)) == 0)
418 port_entry_t *next = pe->next;
420 DEBUG ("tcpconns plugin: Removing temporary entry "
421 "for listening port %"PRIu16, pe->port);
424 port_list_head = next;
434 memset (pe->count_local, '\0', sizeof (pe->count_local));
435 memset (pe->count_remote, '\0', sizeof (pe->count_remote));
436 pe->flags &= ~PORT_IS_LISTENING;
441 } /* void conn_reset_port_entry */
443 static int conn_handle_ports (uint16_t port_local, uint16_t port_remote, uint8_t state)
445 port_entry_t *pe = NULL;
447 if ((state > TCP_STATE_MAX)
448 #if TCP_STATE_MIN > 0
449 || (state < TCP_STATE_MIN)
453 NOTICE ("tcpconns plugin: Ignoring connection with "
454 "unknown state 0x%02"PRIx8".", state);
458 count_total[state]++;
460 /* Listening sockets */
461 if ((state == TCP_STATE_LISTEN) && (port_collect_listening != 0))
463 pe = conn_get_port_entry (port_local, 1 /* create */);
465 pe->flags |= PORT_IS_LISTENING;
468 DEBUG ("tcpconns plugin: Connection %"PRIu16" <-> %"PRIu16" (%s)",
469 port_local, port_remote, tcp_state[state]);
471 pe = conn_get_port_entry (port_local, 0 /* no create */);
473 pe->count_local[state]++;
475 pe = conn_get_port_entry (port_remote, 0 /* no create */);
477 pe->count_remote[state]++;
480 } /* int conn_handle_ports */
483 /* Returns zero on success, less than zero on socket error and greater than
484 * zero on other errors. */
485 static int conn_read_netlink (void)
487 #if HAVE_STRUCT_LINUX_INET_DIAG_REQ
489 struct sockaddr_nl nladdr;
493 struct inet_diag_msg *r;
496 /* If this fails, it's likely a permission problem. We'll fall back to
497 * reading this information from files below. */
498 fd = socket(AF_NETLINK, SOCK_RAW, NETLINK_INET_DIAG);
501 ERROR ("tcpconns plugin: conn_read_netlink: socket(AF_NETLINK, SOCK_RAW, "
502 "NETLINK_INET_DIAG) failed: %s",
503 sstrerror (errno, buf, sizeof (buf)));
507 memset(&nladdr, 0, sizeof(nladdr));
508 nladdr.nl_family = AF_NETLINK;
510 memset(&req, 0, sizeof(req));
511 req.nlh.nlmsg_len = sizeof(req);
512 req.nlh.nlmsg_type = TCPDIAG_GETSOCK;
513 /* NLM_F_ROOT: return the complete table instead of a single entry.
514 * NLM_F_MATCH: return all entries matching criteria (not implemented)
515 * NLM_F_REQUEST: must be set on all request messages */
516 req.nlh.nlmsg_flags = NLM_F_ROOT | NLM_F_MATCH | NLM_F_REQUEST;
517 req.nlh.nlmsg_pid = 0;
518 /* The sequence_number is used to track our messages. Since netlink is not
519 * reliable, we don't want to end up with a corrupt or incomplete old
520 * message in case the system is/was out of memory. */
521 req.nlh.nlmsg_seq = ++sequence_number;
522 req.r.idiag_family = AF_INET;
523 req.r.idiag_states = 0xfff;
526 memset(&iov, 0, sizeof(iov));
528 iov.iov_len = sizeof(req);
530 memset(&msg, 0, sizeof(msg));
531 msg.msg_name = (void*)&nladdr;
532 msg.msg_namelen = sizeof(nladdr);
536 if (sendmsg (fd, &msg, 0) < 0)
538 ERROR ("tcpconns plugin: conn_read_netlink: sendmsg(2) failed: %s",
539 sstrerror (errno, buf, sizeof (buf)));
545 iov.iov_len = sizeof(buf);
552 memset(&msg, 0, sizeof(msg));
553 msg.msg_name = (void*)&nladdr;
554 msg.msg_namelen = sizeof(nladdr);
558 status = recvmsg(fd, (void *) &msg, /* flags = */ 0);
561 if ((errno == EINTR) || (errno == EAGAIN))
564 ERROR ("tcpconns plugin: conn_read_netlink: recvmsg(2) failed: %s",
565 sstrerror (errno, buf, sizeof (buf)));
569 else if (status == 0)
572 DEBUG ("tcpconns plugin: conn_read_netlink: Unexpected zero-sized "
573 "reply from netlink socket.");
577 h = (struct nlmsghdr*)buf;
578 while (NLMSG_OK(h, status))
580 if (h->nlmsg_seq != sequence_number)
582 h = NLMSG_NEXT(h, status);
586 if (h->nlmsg_type == NLMSG_DONE)
591 else if (h->nlmsg_type == NLMSG_ERROR)
593 struct nlmsgerr *msg_error;
595 msg_error = NLMSG_DATA(h);
596 WARNING ("tcpconns plugin: conn_read_netlink: Received error %i.",
605 /* This code does not (need to) distinguish between IPv4 and IPv6. */
606 conn_handle_ports (ntohs(r->id.idiag_sport),
607 ntohs(r->id.idiag_dport),
610 h = NLMSG_NEXT(h, status);
611 } /* while (NLMSG_OK) */
614 /* Not reached because the while() loop above handles the exit condition. */
618 #endif /* HAVE_STRUCT_LINUX_INET_DIAG_REQ */
619 } /* int conn_read_netlink */
621 static int conn_handle_line (char *buffer)
628 char *port_local_str;
629 char *port_remote_str;
631 uint16_t port_remote;
635 int buffer_len = strlen (buffer);
637 while ((buffer_len > 0) && (buffer[buffer_len - 1] < 32))
638 buffer[--buffer_len] = '\0';
642 fields_len = strsplit (buffer, fields, STATIC_ARRAY_SIZE (fields));
645 DEBUG ("tcpconns plugin: Got %i fields, expected at least 12.", fields_len);
649 port_local_str = strchr (fields[1], ':');
650 port_remote_str = strchr (fields[2], ':');
652 if ((port_local_str == NULL) || (port_remote_str == NULL))
656 if ((*port_local_str == '\0') || (*port_remote_str == '\0'))
660 port_local = (uint16_t) strtol (port_local_str, &endptr, 16);
661 if ((endptr == NULL) || (*endptr != '\0'))
665 port_remote = (uint16_t) strtol (port_remote_str, &endptr, 16);
666 if ((endptr == NULL) || (*endptr != '\0'))
670 state = (uint8_t) strtol (fields[3], &endptr, 16);
671 if ((endptr == NULL) || (*endptr != '\0'))
674 return (conn_handle_ports (port_local, port_remote, state));
675 } /* int conn_handle_line */
677 static int conn_read_file (const char *file)
682 fh = fopen (file, "r");
686 while (fgets (buffer, sizeof (buffer), fh) != NULL)
688 conn_handle_line (buffer);
689 } /* while (fgets) */
694 } /* int conn_read_file */
695 /* #endif KERNEL_LINUX */
697 #elif HAVE_SYSCTLBYNAME
698 /* #endif HAVE_SYSCTLBYNAME */
700 #elif HAVE_LIBKVM_NLIST
701 #endif /* HAVE_LIBKVM_NLIST */
703 static int conn_config (const char *key, const char *value)
705 if (strcasecmp (key, "ListeningPorts") == 0)
708 port_collect_listening = 1;
710 port_collect_listening = 0;
712 else if ((strcasecmp (key, "LocalPort") == 0)
713 || (strcasecmp (key, "RemotePort") == 0))
716 int port = atoi (value);
718 if ((port < 1) || (port > 65535))
720 ERROR ("tcpconns plugin: Invalid port: %i", port);
724 pe = conn_get_port_entry ((uint16_t) port, 1 /* create */);
727 ERROR ("tcpconns plugin: conn_get_port_entry failed.");
731 if (strcasecmp (key, "LocalPort") == 0)
732 pe->flags |= PORT_COLLECT_LOCAL;
734 pe->flags |= PORT_COLLECT_REMOTE;
736 else if (strcasecmp (key, "AllPortsSummary") == 0)
739 port_collect_total = 1;
741 port_collect_total = 0;
749 } /* int conn_config */
752 static int conn_init (void)
754 if (port_collect_total == 0 && port_list_head == NULL)
755 port_collect_listening = 1;
758 } /* int conn_init */
760 static int conn_read (void)
764 conn_reset_port_entry ();
766 if (linux_source == SRC_NETLINK)
768 status = conn_read_netlink ();
770 else if (linux_source == SRC_PROC)
774 if (conn_read_file ("/proc/net/tcp") != 0)
776 if (conn_read_file ("/proc/net/tcp6") != 0)
784 else /* if (linux_source == SRC_DUNNO) */
786 /* Try to use netlink for getting this data, it is _much_ faster on systems
787 * with a large amount of connections. */
788 status = conn_read_netlink ();
791 INFO ("tcpconns plugin: Reading from netlink succeeded. "
792 "Will use the netlink method from now on.");
793 linux_source = SRC_NETLINK;
797 INFO ("tcpconns plugin: Reading from netlink failed. "
798 "Will read from /proc from now on.");
799 linux_source = SRC_PROC;
801 /* return success here to avoid the "plugin failed" message. */
812 } /* int conn_read */
813 /* #endif KERNEL_LINUX */
815 #elif HAVE_SYSCTLBYNAME
816 static int conn_read (void)
822 struct xinpgen *in_orig;
823 struct xinpgen *in_ptr;
825 conn_reset_port_entry ();
828 status = sysctlbyname ("net.inet.tcp.pcblist", NULL, &buffer_len, 0, 0);
831 ERROR ("tcpconns plugin: sysctlbyname failed.");
835 buffer = malloc (buffer_len);
838 ERROR ("tcpconns plugin: malloc failed.");
842 status = sysctlbyname ("net.inet.tcp.pcblist", buffer, &buffer_len, 0, 0);
845 ERROR ("tcpconns plugin: sysctlbyname failed.");
850 if (buffer_len <= sizeof (struct xinpgen))
852 ERROR ("tcpconns plugin: (buffer_len <= sizeof (struct xinpgen))");
857 in_orig = (struct xinpgen *) buffer;
858 for (in_ptr = (struct xinpgen *) (((char *) in_orig) + in_orig->xig_len);
859 in_ptr->xig_len > sizeof (struct xinpgen);
860 in_ptr = (struct xinpgen *) (((char *) in_ptr) + in_ptr->xig_len))
862 struct tcpcb *tp = &((struct xtcpcb *) in_ptr)->xt_tp;
863 struct inpcb *inp = &((struct xtcpcb *) in_ptr)->xt_inp;
864 struct xsocket *so = &((struct xtcpcb *) in_ptr)->xt_socket;
866 /* Ignore non-TCP sockets */
867 if (so->xso_protocol != IPPROTO_TCP)
870 /* Ignore PCBs which were freed during copyout. */
871 if (inp->inp_gencnt > in_orig->xig_gen)
874 if (((inp->inp_vflag & INP_IPV4) == 0)
875 && ((inp->inp_vflag & INP_IPV6) == 0))
878 conn_handle_ports (ntohs (inp->inp_lport), ntohs (inp->inp_fport),
889 } /* int conn_read */
890 /* #endif HAVE_SYSCTLBYNAME */
892 #elif HAVE_LIBKVM_NLIST
893 static int kread (u_long addr, void *buf, int size)
897 status = kvm_read (kvmd, addr, buf, size);
900 ERROR ("tcpconns plugin: kvm_read failed (got %i, expected %i): %s\n",
901 status, size, kvm_geterr (kvmd));
907 static int conn_init (void)
909 char buf[_POSIX2_LINE_MAX];
918 kvmd = kvm_openfiles (NULL, NULL, NULL, O_RDONLY, buf);
921 ERROR ("tcpconns plugin: kvm_openfiles failed: %s", buf);
925 status = kvm_nlist (kvmd, nl);
928 ERROR ("tcpconns plugin: kvm_nlist failed with status %i.", status);
932 if (nl[N_TCBTABLE].n_type == 0)
934 ERROR ("tcpconns plugin: Error looking up kernel's namelist: "
935 "N_TCBTABLE is invalid.");
939 inpcbtable_off = (u_long) nl[N_TCBTABLE].n_value;
940 inpcbtable_ptr = (struct inpcbtable *) nl[N_TCBTABLE].n_value;
943 } /* int conn_init */
945 static int conn_read (void)
947 struct inpcbtable table;
948 #if !defined(__OpenBSD__) && (defined(__NetBSD_Version__) && __NetBSD_Version__ <= 699002700)
956 conn_reset_port_entry ();
958 /* Read the pcbtable from the kernel */
959 status = kread (inpcbtable_off, &table, sizeof (table));
963 #if defined(__OpenBSD__) || (defined(__NetBSD_Version__) && __NetBSD_Version__ > 699002700)
964 /* inpt_queue is a TAILQ on OpenBSD */
965 /* Get the first pcb */
966 next = (struct inpcb *)TAILQ_FIRST (&table.inpt_queue);
969 /* Get the `head' pcb */
970 head = (struct inpcb *) &(inpcbtable_ptr->inpt_queue);
971 /* Get the first pcb */
972 next = (struct inpcb *)CIRCLEQ_FIRST (&table.inpt_queue);
977 /* Read the pcb pointed to by `next' into `inpcb' */
978 status = kread ((u_long) next, &inpcb, sizeof (inpcb));
983 #if defined(__OpenBSD__) || (defined(__NetBSD_Version__) && __NetBSD_Version__ > 699002700)
984 /* inpt_queue is a TAILQ on OpenBSD */
985 next = (struct inpcb *)TAILQ_NEXT (&inpcb, inp_queue);
987 next = (struct inpcb *)CIRCLEQ_NEXT (&inpcb, inp_queue);
990 /* Ignore sockets, that are not connected. */
992 if (inpcb.inp_af == AF_INET6)
993 continue; /* XXX see netbsd/src/usr.bin/netstat/inet6.c */
995 if (!(inpcb.inp_flags & INP_IPV6)
996 && (inet_lnaof(inpcb.inp_laddr) == INADDR_ANY))
998 if ((inpcb.inp_flags & INP_IPV6)
999 && IN6_IS_ADDR_UNSPECIFIED (&inpcb.inp_laddr6))
1003 status = kread ((u_long) inpcb.inp_ppcb, &tcpcb, sizeof (tcpcb));
1006 conn_handle_ports (ntohs(inpcb.inp_lport), ntohs(inpcb.inp_fport), tcpcb.t_state);
1007 } /* while (next != head) */
1013 /* #endif HAVE_LIBKVM_NLIST */
1017 static int conn_read (void)
1023 struct netinfo_header *header;
1024 struct netinfo_conn *conn;
1026 conn_reset_port_entry ();
1028 size = netinfo(NETINFO_TCP, 0, 0, 0);
1031 ERROR ("tcpconns plugin: netinfo failed return: %i", size);
1038 if ((size - sizeof (struct netinfo_header)) % sizeof (struct netinfo_conn))
1040 ERROR ("tcpconns plugin: invalid buffer size");
1044 data = malloc(size);
1047 ERROR ("tcpconns plugin: malloc failed");
1051 if (netinfo(NETINFO_TCP, data, &size, 0) < 0)
1053 ERROR ("tcpconns plugin: netinfo failed");
1058 header = (struct netinfo_header *)data;
1059 nconn = header->size;
1060 conn = (struct netinfo_conn *)(data + sizeof(struct netinfo_header));
1062 for (i=0; i < nconn; conn++, i++)
1064 conn_handle_ports (conn->srcport, conn->dstport, conn->tcp_state);
1073 #endif /* KERNEL_AIX */
1075 void module_register (void)
1077 plugin_register_config ("tcpconns", conn_config,
1078 config_keys, config_keys_num);
1080 plugin_register_init ("tcpconns", conn_init);
1081 #elif HAVE_SYSCTLBYNAME
1082 /* no initialization */
1083 #elif HAVE_LIBKVM_NLIST
1084 plugin_register_init ("tcpconns", conn_init);
1086 /* no initialization */
1088 plugin_register_read ("tcpconns", conn_read);
1089 } /* void module_register */
1092 * vim: set shiftwidth=2 softtabstop=2 tabstop=8 fdm=marker :