![[tokkee]](http://tokkee.org/images/avatar.png){kind=avatar}
diff --git a/src/tcpconns.c b/src/tcpconns.c
--- a/src/tcpconns.c
+++ /dev/null
@@ -1,1095 +0,0 @@
-/**
- * collectd - src/tcpconns.c
- * 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
- * Free Software Foundation; only version 2 of the License is applicable.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write to the Free Software Foundation, Inc.,
- * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
- *
- * Author:
- * Florian octo Forster <octo at collectd.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 defined(__OpenBSD__) || defined(__NetBSD__)
-#undef HAVE_SYSCTLBYNAME /* force HAVE_LIBKVM_NLIST path */
-#endif
-
-#if !KERNEL_LINUX && !HAVE_SYSCTLBYNAME && !HAVE_LIBKVM_NLIST && !KERNEL_AIX
-# error "No applicable input method."
-#endif
-
-#if KERNEL_LINUX
-# include <asm/types.h>
-/* sys/socket.h is necessary to compile when using netlink on older systems. */
-# include <sys/socket.h>
-# include <linux/netlink.h>
-#if HAVE_LINUX_INET_DIAG_H
-# include <linux/inet_diag.h>
-#endif
-# include <sys/socket.h>
-# include <arpa/inet.h>
-/* #endif KERNEL_LINUX */
-
-#elif HAVE_SYSCTLBYNAME
-# include <sys/socketvar.h>
-# include <sys/sysctl.h>
-
-/* Some includes needed for compiling on FreeBSD */
-#include <sys/time.h>
-#if HAVE_SYS_TYPES_H
-# include <sys/types.h>
-#endif
-#if HAVE_SYS_SOCKET_H
-# include <sys/socket.h>
-#endif
-#if HAVE_NET_IF_H
-# include <net/if.h>
-#endif
-
-# include <net/route.h>
-# include <netinet/in.h>
-# include <netinet/in_systm.h>
-# include <netinet/ip.h>
-# include <netinet/ip6.h>
-# include <netinet/in_pcb.h>
-# include <netinet/ip_var.h>
-# include <netinet/tcp.h>
-# include <netinet/tcpip.h>
-# include <netinet/tcp_seq.h>
-# include <netinet/tcp_var.h>
-/* #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>
-# if !defined(HAVE_BSD_NLIST_H) || !HAVE_BSD_NLIST_H
-# include <nlist.h>
-# else /* HAVE_BSD_NLIST_H */
-# include <bsd/nlist.h>
-# endif
-# include <kvm.h>
-/* #endif HAVE_LIBKVM_NLIST */
-
-#elif KERNEL_AIX
-# include <arpa/inet.h>
-# include <sys/socketvar.h>
-#endif /* KERNEL_AIX */
-
-#if KERNEL_LINUX
-#if HAVE_STRUCT_LINUX_INET_DIAG_REQ
-struct nlreq {
- struct nlmsghdr nlh;
- struct inet_diag_req r;
-};
-#endif
-
-static const char *tcp_state[] =
-{
- "", /* 0 */
- "ESTABLISHED",
- "SYN_SENT",
- "SYN_RECV",
- "FIN_WAIT1",
- "FIN_WAIT2",
- "TIME_WAIT",
- "CLOSED",
- "CLOSE_WAIT",
- "LAST_ACK",
- "LISTEN", /* 10 */
- "CLOSING"
-};
-
-# define TCP_STATE_LISTEN 10
-# define TCP_STATE_MIN 1
-# define TCP_STATE_MAX 11
-/* #endif KERNEL_LINUX */
-
-#elif HAVE_SYSCTLBYNAME
-static const char *tcp_state[] =
-{
- "CLOSED",
- "LISTEN",
- "SYN_SENT",
- "SYN_RECV",
- "ESTABLISHED",
- "CLOSE_WAIT",
- "FIN_WAIT1",
- "CLOSING",
- "LAST_ACK",
- "FIN_WAIT2",
- "TIME_WAIT"
-};
-
-# define TCP_STATE_LISTEN 1
-# define TCP_STATE_MIN 0
-# define TCP_STATE_MAX 10
-/* #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 */
-
-#elif KERNEL_AIX
-static const char *tcp_state[] =
-{
- "CLOSED",
- "LISTEN",
- "SYN_SENT",
- "SYN_RECV",
- "ESTABLISHED",
- "CLOSE_WAIT",
- "FIN_WAIT1",
- "CLOSING",
- "LAST_ACK",
- "FIN_WAIT2",
- "TIME_WAIT"
-};
-
-# define TCP_STATE_LISTEN 1
-# define TCP_STATE_MIN 0
-# define TCP_STATE_MAX 10
-
-struct netinfo_conn {
- uint32_t unknow1[2];
- uint16_t dstport;
- uint16_t unknow2;
- struct in6_addr dstaddr;
- uint16_t srcport;
- uint16_t unknow3;
- struct in6_addr srcaddr;
- uint32_t unknow4[36];
- uint16_t tcp_state;
- uint16_t unknow5[7];
-};
-
-struct netinfo_header {
- unsigned int proto;
- unsigned int size;
-};
-
-# define NETINFO_TCP 3
-extern int netinfo (int proto, void *data, int *size, int n);
-#endif /* KERNEL_AIX */
-
-#define PORT_COLLECT_LOCAL 0x01
-#define PORT_COLLECT_REMOTE 0x02
-#define PORT_IS_LISTENING 0x04
-
-typedef struct port_entry_s
-{
- uint16_t port;
- uint16_t flags;
- uint32_t count_local[TCP_STATE_MAX + 1];
- uint32_t count_remote[TCP_STATE_MAX + 1];
- struct port_entry_s *next;
-} port_entry_t;
-
-static const char *config_keys[] =
-{
- "ListeningPorts",
- "LocalPort",
- "RemotePort",
- "AllPortsSummary"
-};
-static int config_keys_num = STATIC_ARRAY_SIZE (config_keys);
-
-static int port_collect_listening = 0;
-static int port_collect_total = 0;
-static port_entry_t *port_list_head = NULL;
-static uint32_t count_total[TCP_STATE_MAX + 1];
-
-#if KERNEL_LINUX
-#if HAVE_STRUCT_LINUX_INET_DIAG_REQ
-/* This depends on linux inet_diag_req because if this structure is missing,
- * sequence_number is useless and we get a compilation warning.
- */
-static uint32_t sequence_number = 0;
-#endif
-
-enum
-{
- SRC_DUNNO,
- SRC_NETLINK,
- SRC_PROC
-} linux_source = SRC_DUNNO;
-#endif
-
-static void conn_prepare_vl (value_list_t *vl, value_t *values)
-{
- vl->values = values;
- vl->values_len = 1;
- sstrncpy (vl->host, hostname_g, sizeof (vl->host));
- sstrncpy (vl->plugin, "tcpconns", sizeof (vl->plugin));
- sstrncpy (vl->type, "tcp_connections", sizeof (vl->type));
-}
-
-static void conn_submit_port_entry (port_entry_t *pe)
-{
- value_t values[1];
- value_list_t vl = VALUE_LIST_INIT;
- int i;
-
- conn_prepare_vl (&vl, values);
-
- if (((port_collect_listening != 0) && (pe->flags & PORT_IS_LISTENING))
- || (pe->flags & PORT_COLLECT_LOCAL))
- {
- 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];
-
- sstrncpy (vl.type_instance, tcp_state[i], sizeof (vl.type_instance));
-
- plugin_dispatch_values (&vl);
- }
- }
-
- if (pe->flags & PORT_COLLECT_REMOTE)
- {
- 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];
-
- sstrncpy (vl.type_instance, tcp_state[i], sizeof (vl.type_instance));
-
- plugin_dispatch_values (&vl);
- }
- }
-} /* void conn_submit */
-
-static void conn_submit_port_total (void)
-{
- value_t values[1];
- value_list_t vl = VALUE_LIST_INIT;
- int i;
-
- conn_prepare_vl (&vl, values);
-
- sstrncpy (vl.plugin_instance, "all", sizeof (vl.plugin_instance));
-
- for (i = 1; i <= TCP_STATE_MAX; i++)
- {
- vl.values[0].gauge = count_total[i];
-
- sstrncpy (vl.type_instance, tcp_state[i], sizeof (vl.type_instance));
-
- plugin_dispatch_values (&vl);
- }
-}
-
-static void conn_submit_all (void)
-{
- port_entry_t *pe;
-
- if (port_collect_total)
- conn_submit_port_total ();
-
- for (pe = port_list_head; pe != NULL; pe = pe->next)
- conn_submit_port_entry (pe);
-} /* void conn_submit_all */
-
-static port_entry_t *conn_get_port_entry (uint16_t port, int create)
-{
- port_entry_t *ret;
-
- ret = port_list_head;
- while (ret != NULL)
- {
- if (ret->port == port)
- break;
- ret = ret->next;
- }
-
- if ((ret == NULL) && (create != 0))
- {
- ret = (port_entry_t *) malloc (sizeof (port_entry_t));
- if (ret == NULL)
- return (NULL);
- memset (ret, '\0', sizeof (port_entry_t));
-
- ret->port = port;
- ret->next = port_list_head;
- port_list_head = ret;
- }
-
- return (ret);
-} /* port_entry_t *conn_get_port_entry */
-
-/* Removes ports that were added automatically due to the `ListeningPorts'
- * setting but which are no longer listening. */
-static void conn_reset_port_entry (void)
-{
- port_entry_t *prev = NULL;
- port_entry_t *pe = port_list_head;
-
- memset (&count_total, '\0', sizeof(count_total));
-
- while (pe != NULL)
- {
- /* If this entry was created while reading the files (ant not when handling
- * the configuration) remove it now. */
- if ((pe->flags & (PORT_COLLECT_LOCAL
- | PORT_COLLECT_REMOTE
- | PORT_IS_LISTENING)) == 0)
- {
- port_entry_t *next = pe->next;
-
- DEBUG ("tcpconns plugin: Removing temporary entry "
- "for listening port %"PRIu16, pe->port);
-
- if (prev == NULL)
- port_list_head = next;
- else
- prev->next = next;
-
- sfree (pe);
- pe = next;
-
- continue;
- }
-
- memset (pe->count_local, '\0', sizeof (pe->count_local));
- memset (pe->count_remote, '\0', sizeof (pe->count_remote));
- pe->flags &= ~PORT_IS_LISTENING;
-
- pe = pe->next;
- }
-} /* void conn_reset_port_entry */
-
-static int conn_handle_ports (uint16_t port_local, uint16_t port_remote, uint8_t state)
-{
- port_entry_t *pe = NULL;
-
- if ((state > TCP_STATE_MAX)
-#if TCP_STATE_MIN > 0
- || (state < TCP_STATE_MIN)
-#endif
- )
- {
- NOTICE ("tcpconns plugin: Ignoring connection with "
- "unknown state 0x%02"PRIx8".", state);
- return (-1);
- }
-
- count_total[state]++;
-
- /* Listening sockets */
- if ((state == TCP_STATE_LISTEN) && (port_collect_listening != 0))
- {
- pe = conn_get_port_entry (port_local, 1 /* create */);
- if (pe != NULL)
- pe->flags |= PORT_IS_LISTENING;
- }
-
- DEBUG ("tcpconns plugin: Connection %"PRIu16" <-> %"PRIu16" (%s)",
- port_local, port_remote, tcp_state[state]);
-
- pe = conn_get_port_entry (port_local, 0 /* no create */);
- if (pe != NULL)
- pe->count_local[state]++;
-
- pe = conn_get_port_entry (port_remote, 0 /* no create */);
- if (pe != NULL)
- pe->count_remote[state]++;
-
- return (0);
-} /* int conn_handle_ports */
-
-#if KERNEL_LINUX
-/* Returns zero on success, less than zero on socket error and greater than
- * zero on other errors. */
-static int conn_read_netlink (void)
-{
-#if HAVE_STRUCT_LINUX_INET_DIAG_REQ
- int fd;
- struct sockaddr_nl nladdr;
- struct nlreq req;
- struct msghdr msg;
- struct iovec iov;
- struct inet_diag_msg *r;
- char buf[8192];
-
- /* If this fails, it's likely a permission problem. We'll fall back to
- * reading this information from files below. */
- fd = socket(AF_NETLINK, SOCK_RAW, NETLINK_INET_DIAG);
- if (fd < 0)
- {
- ERROR ("tcpconns plugin: conn_read_netlink: socket(AF_NETLINK, SOCK_RAW, "
- "NETLINK_INET_DIAG) failed: %s",
- sstrerror (errno, buf, sizeof (buf)));
- return (-1);
- }
-
- memset(&nladdr, 0, sizeof(nladdr));
- nladdr.nl_family = AF_NETLINK;
-
- memset(&req, 0, sizeof(req));
- req.nlh.nlmsg_len = sizeof(req);
- req.nlh.nlmsg_type = TCPDIAG_GETSOCK;
- /* NLM_F_ROOT: return the complete table instead of a single entry.
- * NLM_F_MATCH: return all entries matching criteria (not implemented)
- * NLM_F_REQUEST: must be set on all request messages */
- req.nlh.nlmsg_flags = NLM_F_ROOT | NLM_F_MATCH | NLM_F_REQUEST;
- req.nlh.nlmsg_pid = 0;
- /* The sequence_number is used to track our messages. Since netlink is not
- * reliable, we don't want to end up with a corrupt or incomplete old
- * message in case the system is/was out of memory. */
- req.nlh.nlmsg_seq = ++sequence_number;
- req.r.idiag_family = AF_INET;
- req.r.idiag_states = 0xfff;
- req.r.idiag_ext = 0;
-
- memset(&iov, 0, sizeof(iov));
- iov.iov_base = &req;
- iov.iov_len = sizeof(req);
-
- memset(&msg, 0, sizeof(msg));
- msg.msg_name = (void*)&nladdr;
- msg.msg_namelen = sizeof(nladdr);
- msg.msg_iov = &iov;
- msg.msg_iovlen = 1;
-
- if (sendmsg (fd, &msg, 0) < 0)
- {
- ERROR ("tcpconns plugin: conn_read_netlink: sendmsg(2) failed: %s",
- sstrerror (errno, buf, sizeof (buf)));
- close (fd);
- return (-1);
- }
-
- iov.iov_base = buf;
- iov.iov_len = sizeof(buf);
-
- while (1)
- {
- int status;
- struct nlmsghdr *h;
-
- memset(&msg, 0, sizeof(msg));
- msg.msg_name = (void*)&nladdr;
- msg.msg_namelen = sizeof(nladdr);
- msg.msg_iov = &iov;
- msg.msg_iovlen = 1;
-
- status = recvmsg(fd, (void *) &msg, /* flags = */ 0);
- if (status < 0)
- {
- if ((errno == EINTR) || (errno == EAGAIN))
- continue;
-
- ERROR ("tcpconns plugin: conn_read_netlink: recvmsg(2) failed: %s",
- sstrerror (errno, buf, sizeof (buf)));
- close (fd);
- return (-1);
- }
- else if (status == 0)
- {
- close (fd);
- DEBUG ("tcpconns plugin: conn_read_netlink: Unexpected zero-sized "
- "reply from netlink socket.");
- return (0);
- }
-
- h = (struct nlmsghdr*)buf;
- while (NLMSG_OK(h, status))
- {
- if (h->nlmsg_seq != sequence_number)
- {
- h = NLMSG_NEXT(h, status);
- continue;
- }
-
- if (h->nlmsg_type == NLMSG_DONE)
- {
- close (fd);
- return (0);
- }
- else if (h->nlmsg_type == NLMSG_ERROR)
- {
- struct nlmsgerr *msg_error;
-
- msg_error = NLMSG_DATA(h);
- WARNING ("tcpconns plugin: conn_read_netlink: Received error %i.",
- msg_error->error);
-
- close (fd);
- return (1);
- }
-
- r = NLMSG_DATA(h);
-
- /* This code does not (need to) distinguish between IPv4 and IPv6. */
- conn_handle_ports (ntohs(r->id.idiag_sport),
- ntohs(r->id.idiag_dport),
- r->idiag_state);
-
- h = NLMSG_NEXT(h, status);
- } /* while (NLMSG_OK) */
- } /* while (1) */
-
- /* Not reached because the while() loop above handles the exit condition. */
- return (0);
-#else
- return (1);
-#endif /* HAVE_STRUCT_LINUX_INET_DIAG_REQ */
-} /* int conn_read_netlink */
-
-static int conn_handle_line (char *buffer)
-{
- char *fields[32];
- int fields_len;
-
- char *endptr;
-
- char *port_local_str;
- char *port_remote_str;
- uint16_t port_local;
- uint16_t port_remote;
-
- uint8_t state;
-
- int buffer_len = strlen (buffer);
-
- while ((buffer_len > 0) && (buffer[buffer_len - 1] < 32))
- buffer[--buffer_len] = '\0';
- if (buffer_len <= 0)
- return (-1);
-
- fields_len = strsplit (buffer, fields, STATIC_ARRAY_SIZE (fields));
- if (fields_len < 12)
- {
- DEBUG ("tcpconns plugin: Got %i fields, expected at least 12.", fields_len);
- return (-1);
- }
-
- port_local_str = strchr (fields[1], ':');
- port_remote_str = strchr (fields[2], ':');
-
- if ((port_local_str == NULL) || (port_remote_str == NULL))
- return (-1);
- port_local_str++;
- port_remote_str++;
- if ((*port_local_str == '\0') || (*port_remote_str == '\0'))
- return (-1);
-
- endptr = NULL;
- port_local = (uint16_t) strtol (port_local_str, &endptr, 16);
- if ((endptr == NULL) || (*endptr != '\0'))
- return (-1);
-
- endptr = NULL;
- port_remote = (uint16_t) strtol (port_remote_str, &endptr, 16);
- if ((endptr == NULL) || (*endptr != '\0'))
- return (-1);
-
- endptr = NULL;
- state = (uint8_t) strtol (fields[3], &endptr, 16);
- if ((endptr == NULL) || (*endptr != '\0'))
- return (-1);
-
- return (conn_handle_ports (port_local, port_remote, state));
-} /* int conn_handle_line */
-
-static int conn_read_file (const char *file)
-{
- FILE *fh;
- char buffer[1024];
-
- fh = fopen (file, "r");
- if (fh == NULL)
- return (-1);
-
- while (fgets (buffer, sizeof (buffer), fh) != NULL)
- {
- conn_handle_line (buffer);
- } /* while (fgets) */
-
- fclose (fh);
-
- return (0);
-} /* int conn_read_file */
-/* #endif KERNEL_LINUX */
-
-#elif 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 (IS_TRUE (value))
- port_collect_listening = 1;
- else
- port_collect_listening = 0;
- }
- else if ((strcasecmp (key, "LocalPort") == 0)
- || (strcasecmp (key, "RemotePort") == 0))
- {
- port_entry_t *pe;
- int port = atoi (value);
-
- if ((port < 1) || (port > 65535))
- {
- ERROR ("tcpconns plugin: Invalid port: %i", port);
- return (1);
- }
-
- pe = conn_get_port_entry ((uint16_t) port, 1 /* create */);
- if (pe == NULL)
- {
- ERROR ("tcpconns plugin: conn_get_port_entry failed.");
- return (1);
- }
-
- if (strcasecmp (key, "LocalPort") == 0)
- pe->flags |= PORT_COLLECT_LOCAL;
- else
- pe->flags |= PORT_COLLECT_REMOTE;
- }
- else if (strcasecmp (key, "AllPortsSummary") == 0)
- {
- if (IS_TRUE (value))
- port_collect_total = 1;
- else
- port_collect_total = 0;
- }
- else
- {
- return (-1);
- }
-
- return (0);
-} /* int conn_config */
-
-#if KERNEL_LINUX
-static int conn_init (void)
-{
- if (port_collect_total == 0 && port_list_head == NULL)
- port_collect_listening = 1;
-
- return (0);
-} /* int conn_init */
-
-static int conn_read (void)
-{
- int status;
-
- conn_reset_port_entry ();
-
- if (linux_source == SRC_NETLINK)
- {
- status = conn_read_netlink ();
- }
- else if (linux_source == SRC_PROC)
- {
- int errors_num = 0;
-
- if (conn_read_file ("/proc/net/tcp") != 0)
- errors_num++;
- if (conn_read_file ("/proc/net/tcp6") != 0)
- errors_num++;
-
- if (errors_num < 2)
- status = 0;
- else
- status = ENOENT;
- }
- else /* if (linux_source == SRC_DUNNO) */
- {
- /* Try to use netlink for getting this data, it is _much_ faster on systems
- * with a large amount of connections. */
- status = conn_read_netlink ();
- if (status == 0)
- {
- INFO ("tcpconns plugin: Reading from netlink succeeded. "
- "Will use the netlink method from now on.");
- linux_source = SRC_NETLINK;
- }
- else
- {
- INFO ("tcpconns plugin: Reading from netlink failed. "
- "Will read from /proc from now on.");
- linux_source = SRC_PROC;
-
- /* return success here to avoid the "plugin failed" message. */
- return (0);
- }
- }
-
- if (status == 0)
- conn_submit_all ();
- else
- return (status);
-
- return (0);
-} /* int conn_read */
-/* #endif KERNEL_LINUX */
-
-#elif HAVE_SYSCTLBYNAME
-static int conn_read (void)
-{
- int status;
- char *buffer;
- size_t buffer_len;;
-
- struct xinpgen *in_orig;
- struct xinpgen *in_ptr;
-
- conn_reset_port_entry ();
-
- buffer_len = 0;
- status = sysctlbyname ("net.inet.tcp.pcblist", NULL, &buffer_len, 0, 0);
- if (status < 0)
- {
- ERROR ("tcpconns plugin: sysctlbyname failed.");
- return (-1);
- }
-
- buffer = (char *) malloc (buffer_len);
- if (buffer == NULL)
- {
- ERROR ("tcpconns plugin: malloc failed.");
- return (-1);
- }
-
- status = sysctlbyname ("net.inet.tcp.pcblist", buffer, &buffer_len, 0, 0);
- if (status < 0)
- {
- ERROR ("tcpconns plugin: sysctlbyname failed.");
- sfree (buffer);
- return (-1);
- }
-
- if (buffer_len <= sizeof (struct xinpgen))
- {
- ERROR ("tcpconns plugin: (buffer_len <= sizeof (struct xinpgen))");
- sfree (buffer);
- return (-1);
- }
-
- in_orig = (struct xinpgen *) buffer;
- for (in_ptr = (struct xinpgen *) (((char *) in_orig) + in_orig->xig_len);
- in_ptr->xig_len > sizeof (struct xinpgen);
- in_ptr = (struct xinpgen *) (((char *) in_ptr) + in_ptr->xig_len))
- {
- struct tcpcb *tp = &((struct xtcpcb *) in_ptr)->xt_tp;
- struct inpcb *inp = &((struct xtcpcb *) in_ptr)->xt_inp;
- struct xsocket *so = &((struct xtcpcb *) in_ptr)->xt_socket;
-
- /* Ignore non-TCP sockets */
- if (so->xso_protocol != IPPROTO_TCP)
- continue;
-
- /* Ignore PCBs which were freed during copyout. */
- if (inp->inp_gencnt > in_orig->xig_gen)
- continue;
-
- if (((inp->inp_vflag & INP_IPV4) == 0)
- && ((inp->inp_vflag & INP_IPV6) == 0))
- continue;
-
- conn_handle_ports (ntohs (inp->inp_lport), ntohs (inp->inp_fport),
- tp->t_state);
- } /* for (in_ptr) */
-
- in_orig = NULL;
- in_ptr = NULL;
- sfree (buffer);
-
- conn_submit_all ();
-
- return (0);
-} /* int conn_read */
-/* #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;
-#if !defined(__OpenBSD__) && (defined(__NetBSD_Version__) && __NetBSD_Version__ <= 699002700)
- struct inpcb *head;
-#endif
- 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);
-
-#if defined(__OpenBSD__) || (defined(__NetBSD_Version__) && __NetBSD_Version__ > 699002700)
- /* inpt_queue is a TAILQ on OpenBSD */
- /* Get the first pcb */
- next = (struct inpcb *)TAILQ_FIRST (&table.inpt_queue);
- while (next)
-#else
- /* 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)
-#endif
- {
- /* Read the pcb pointed to by `next' into `inpcb' */
- kread ((u_long) next, &inpcb, sizeof (inpcb));
-
- /* Advance `next' */
-#if defined(__OpenBSD__) || (defined(__NetBSD_Version__) && __NetBSD_Version__ > 699002700)
- /* inpt_queue is a TAILQ on OpenBSD */
- next = (struct inpcb *)TAILQ_NEXT (&inpcb, inp_queue);
-#else
- next = (struct inpcb *)CIRCLEQ_NEXT (&inpcb, inp_queue);
-#endif
-
- /* 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 */
-
-#elif KERNEL_AIX
-
-static int conn_read (void)
-{
- int size;
- int i;
- int nconn;
- void *data;
- struct netinfo_header *header;
- struct netinfo_conn *conn;
-
- conn_reset_port_entry ();
-
- size = netinfo(NETINFO_TCP, 0, 0, 0);
- if (size < 0)
- {
- ERROR ("tcpconns plugin: netinfo failed return: %i", size);
- return (-1);
- }
-
- if (size == 0)
- return (0);
-
- if ((size - sizeof (struct netinfo_header)) % sizeof (struct netinfo_conn))
- {
- ERROR ("tcpconns plugin: invalid buffer size");
- return (-1);
- }
-
- data = malloc(size);
- if (data == NULL)
- {
- ERROR ("tcpconns plugin: malloc failed");
- return (-1);
- }
-
- if (netinfo(NETINFO_TCP, data, &size, 0) < 0)
- {
- ERROR ("tcpconns plugin: netinfo failed");
- free(data);
- return (-1);
- }
-
- header = (struct netinfo_header *)data;
- nconn = header->size;
- conn = (struct netinfo_conn *)(data + sizeof(struct netinfo_header));
-
- for (i=0; i < nconn; conn++, i++)
- {
- conn_handle_ports (conn->srcport, conn->dstport, conn->tcp_state);
- }
-
- free(data);
-
- conn_submit_all ();
-
- return (0);
-}
-#endif /* KERNEL_AIX */
-
-void module_register (void)
-{
- plugin_register_config ("tcpconns", conn_config,
- 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);
-#elif KERNEL_AIX
- /* no initialization */
-#endif
- plugin_register_read ("tcpconns", conn_read);
-} /* void module_register */
-
-/*
- * vim: set shiftwidth=2 softtabstop=2 tabstop=8 fdm=marker :
- */