/**
* collectd - src/tcpconns.c
- * Copyright (C) 2007 Florian octo Forster
+ * Copyright (C) 2007,2008 Florian octo Forster
+ * Copyright (C) 2008 Michael Stapelberg
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
*
* Author:
* Florian octo Forster <octo at verplant.org>
+ * Michael Stapelberg <michael+git at stapelberg.de>
**/
+/**
+ * Code within `HAVE_LIBKVM_NLIST' blocks is provided under the following
+ * license:
+ *
+ * $collectd: parts of tcpconns.c, 2008/08/08 03:48:30 Michael Stapelberg $
+ * $OpenBSD: inet.c,v 1.100 2007/06/19 05:28:30 ray Exp $
+ * $NetBSD: inet.c,v 1.14 1995/10/03 21:42:37 thorpej Exp $
+ *
+ * Copyright (c) 1983, 1988, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
#include "collectd.h"
#include "common.h"
#include "plugin.h"
-#if !KERNEL_LINUX && !HAVE_SYSCTLBYNAME
+#if defined(__OpenBSD__) || defined(__NetBSD__)
+#undef HAVE_SYSCTLBYNAME /* force HAVE_LIBKVM_NLIST path */
+#endif
+
+#if !KERNEL_LINUX && !HAVE_SYSCTLBYNAME && !HAVE_LIBKVM_NLIST
# error "No applicable input method."
#endif
# include <netinet/tcpip.h>
# include <netinet/tcp_seq.h>
# include <netinet/tcp_var.h>
-#endif /* HAVE_SYSCTLBYNAME */
+/* #endif HAVE_SYSCTLBYNAME */
+
+/* This is for OpenBSD and NetBSD. */
+#elif HAVE_LIBKVM_NLIST
+# include <sys/queue.h>
+# include <sys/socket.h>
+# include <net/route.h>
+# include <netinet/in.h>
+# include <netinet/in_systm.h>
+# include <netinet/ip.h>
+# include <netinet/ip_var.h>
+# include <netinet/in_pcb.h>
+# include <netinet/tcp.h>
+# include <netinet/tcp_timer.h>
+# include <netinet/tcp_var.h>
+# include <netdb.h>
+# include <arpa/inet.h>
+# include <nlist.h>
+# include <kvm.h>
+#endif /* HAVE_LIBKVM_NLIST */
#if KERNEL_LINUX
static const char *tcp_state[] =
# define TCP_STATE_LISTEN 1
# define TCP_STATE_MIN 0
# define TCP_STATE_MAX 10
-#endif /* HAVE_SYSCTLBYNAME */
+/* #endif HAVE_SYSCTLBYNAME */
+
+#elif HAVE_LIBKVM_NLIST
+static const char *tcp_state[] =
+{
+ "CLOSED",
+ "LISTEN",
+ "SYN_SENT",
+ "SYN_RECV",
+ "ESTABLISHED",
+ "CLOSE_WAIT",
+ "FIN_WAIT1",
+ "CLOSING",
+ "LAST_ACK",
+ "FIN_WAIT2",
+ "TIME_WAIT"
+};
+
+static kvm_t *kvmd;
+static u_long inpcbtable_off = 0;
+struct inpcbtable *inpcbtable_ptr = NULL;
+
+# define TCP_STATE_LISTEN 1
+# define TCP_STATE_MIN 1
+# define TCP_STATE_MAX 10
+#endif /* HAVE_LIBKVM_NLIST */
#define PORT_COLLECT_LOCAL 0x01
#define PORT_COLLECT_REMOTE 0x02
vl.values = values;
vl.values_len = 1;
- vl.time = time (NULL);
sstrncpy (vl.host, hostname_g, sizeof (vl.host));
sstrncpy (vl.plugin, "tcpconns", sizeof (vl.plugin));
+ sstrncpy (vl.type, "tcp_connections", sizeof (vl.type));
if (((port_collect_listening != 0) && (pe->flags & PORT_IS_LISTENING))
|| (pe->flags & PORT_COLLECT_LOCAL))
{
- snprintf (vl.plugin_instance, sizeof (vl.plugin_instance),
- "%hu-local", pe->port);
- vl.plugin_instance[sizeof (vl.plugin_instance) - 1] = '\0';
+ ssnprintf (vl.plugin_instance, sizeof (vl.plugin_instance),
+ "%"PRIu16"-local", pe->port);
for (i = 1; i <= TCP_STATE_MAX; i++)
{
vl.values[0].gauge = pe->count_local[i];
- strncpy (vl.type_instance, tcp_state[i], sizeof (vl.type_instance));
- vl.type_instance[sizeof (vl.type_instance) - 1] = '\0';
+ sstrncpy (vl.type_instance, tcp_state[i], sizeof (vl.type_instance));
- plugin_dispatch_values ("tcp_connections", &vl);
+ plugin_dispatch_values (&vl);
}
}
if (pe->flags & PORT_COLLECT_REMOTE)
{
- snprintf (vl.plugin_instance, sizeof (vl.plugin_instance),
- "%hu-remote", pe->port);
- vl.plugin_instance[sizeof (vl.plugin_instance) - 1] = '\0';
+ ssnprintf (vl.plugin_instance, sizeof (vl.plugin_instance),
+ "%"PRIu16"-remote", pe->port);
for (i = 1; i <= TCP_STATE_MAX; i++)
{
vl.values[0].gauge = pe->count_remote[i];
- strncpy (vl.type_instance, tcp_state[i], sizeof (vl.type_instance));
- vl.type_instance[sizeof (vl.type_instance) - 1] = '\0';
+ sstrncpy (vl.type_instance, tcp_state[i], sizeof (vl.type_instance));
- plugin_dispatch_values ("tcp_connections", &vl);
+ plugin_dispatch_values (&vl);
}
}
} /* void conn_submit */
port_entry_t *next = pe->next;
DEBUG ("tcpconns plugin: Removing temporary entry "
- "for listening port %hu", pe->port);
+ "for listening port %"PRIu16, pe->port);
if (prev == NULL)
port_list_head = next;
#endif
)
{
- NOTICE ("tcpconns plugin: Ignoring connection with unknown state 0x%02x.",
- state);
+ NOTICE ("tcpconns plugin: Ignoring connection with "
+ "unknown state 0x%02"PRIx8".", state);
return (-1);
}
pe->flags |= PORT_IS_LISTENING;
}
- DEBUG ("tcpconns plugin: Connection %hu <-> %hu (%s)",
+ DEBUG ("tcpconns plugin: Connection %"PRIu16" <-> %"PRIu16" (%s)",
port_local, port_remote, tcp_state[state]);
pe = conn_get_port_entry (port_local, 0 /* no create */);
/* #endif KERNEL_LINUX */
#elif HAVE_SYSCTLBYNAME
-#endif /* HAVE_SYSCTLBYNAME */
+/* #endif HAVE_SYSCTLBYNAME */
+
+#elif HAVE_LIBKVM_NLIST
+#endif /* HAVE_LIBKVM_NLIST */
static int conn_config (const char *key, const char *value)
{
if (strcasecmp (key, "ListeningPorts") == 0)
{
- if ((strcasecmp (value, "Yes") == 0)
- || (strcasecmp (value, "True") == 0)
- || (strcasecmp (value, "On") == 0))
+ if (IS_TRUE (value))
port_collect_listening = 1;
else
port_collect_listening = 0;
&& ((inp->inp_vflag & INP_IPV6) == 0))
continue;
- conn_handle_ports (inp->inp_lport, inp->inp_fport, tp->t_state);
+ conn_handle_ports (ntohs (inp->inp_lport), ntohs (inp->inp_fport),
+ tp->t_state);
} /* for (in_ptr) */
in_orig = NULL;
return (0);
} /* int conn_read */
-#endif /* HAVE_SYSCTLBYNAME */
+/* #endif HAVE_SYSCTLBYNAME */
+
+#elif HAVE_LIBKVM_NLIST
+static int kread (u_long addr, void *buf, int size)
+{
+ int status;
+
+ status = kvm_read (kvmd, addr, buf, size);
+ if (status != size)
+ {
+ ERROR ("tcpconns plugin: kvm_read failed (got %i, expected %i): %s\n",
+ status, size, kvm_geterr (kvmd));
+ return (-1);
+ }
+ return (0);
+} /* int kread */
+
+static int conn_init (void)
+{
+ char buf[_POSIX2_LINE_MAX];
+ struct nlist nl[] =
+ {
+#define N_TCBTABLE 0
+ { "_tcbtable" },
+ { "" }
+ };
+ int status;
+
+ kvmd = kvm_openfiles (NULL, NULL, NULL, O_RDONLY, buf);
+ if (kvmd == NULL)
+ {
+ ERROR ("tcpconns plugin: kvm_openfiles failed: %s", buf);
+ return (-1);
+ }
+
+ status = kvm_nlist (kvmd, nl);
+ if (status < 0)
+ {
+ ERROR ("tcpconns plugin: kvm_nlist failed with status %i.", status);
+ return (-1);
+ }
+
+ if (nl[N_TCBTABLE].n_type == 0)
+ {
+ ERROR ("tcpconns plugin: Error looking up kernel's namelist: "
+ "N_TCBTABLE is invalid.");
+ return (-1);
+ }
+
+ inpcbtable_off = (u_long) nl[N_TCBTABLE].n_value;
+ inpcbtable_ptr = (struct inpcbtable *) nl[N_TCBTABLE].n_value;
+
+ return (0);
+} /* int conn_init */
+
+static int conn_read (void)
+{
+ struct inpcbtable table;
+ struct inpcb *head;
+ struct inpcb *next;
+ struct inpcb inpcb;
+ struct tcpcb tcpcb;
+ int status;
+
+ conn_reset_port_entry ();
+
+ /* Read the pcbtable from the kernel */
+ status = kread (inpcbtable_off, &table, sizeof (table));
+ if (status != 0)
+ return (-1);
+
+ /* Get the `head' pcb */
+ head = (struct inpcb *) &(inpcbtable_ptr->inpt_queue);
+ /* Get the first pcb */
+ next = (struct inpcb *)CIRCLEQ_FIRST (&table.inpt_queue);
+
+ while (next != head)
+ {
+ /* Read the pcb pointed to by `next' into `inpcb' */
+ kread ((u_long) next, &inpcb, sizeof (inpcb));
+
+ /* Advance `next' */
+ next = (struct inpcb *)CIRCLEQ_NEXT (&inpcb, inp_queue);
+
+ /* Ignore sockets, that are not connected. */
+#ifdef __NetBSD__
+ if (inpcb.inp_af == AF_INET6)
+ continue; /* XXX see netbsd/src/usr.bin/netstat/inet6.c */
+#else
+ if (!(inpcb.inp_flags & INP_IPV6)
+ && (inet_lnaof(inpcb.inp_laddr) == INADDR_ANY))
+ continue;
+ if ((inpcb.inp_flags & INP_IPV6)
+ && IN6_IS_ADDR_UNSPECIFIED (&inpcb.inp_laddr6))
+ continue;
+#endif
+
+ kread ((u_long) inpcb.inp_ppcb, &tcpcb, sizeof (tcpcb));
+ conn_handle_ports (ntohs(inpcb.inp_lport), ntohs(inpcb.inp_fport), tcpcb.t_state);
+ } /* while (next != head) */
+
+ conn_submit_all ();
+
+ return (0);
+}
+#endif /* HAVE_LIBKVM_NLIST */
void module_register (void)
{
config_keys, config_keys_num);
#if KERNEL_LINUX
plugin_register_init ("tcpconns", conn_init);
+#elif HAVE_SYSCTLBYNAME
+ /* no initialization */
+#elif HAVE_LIBKVM_NLIST
+ plugin_register_init ("tcpconns", conn_init);
#endif
plugin_register_read ("tcpconns", conn_read);
} /* void module_register */
/*
- * vim: set shiftwidth=2 softtabstop=2 tabstop=8 :
+ * vim: set shiftwidth=2 softtabstop=2 tabstop=8 fdm=marker :
*/
projects / collectd.git / blobdiff