698 lines
14 KiB
C
698 lines
14 KiB
C
/* $NetBSD: sockstat.c,v 1.15 2009/04/13 10:56:56 lukem Exp $ */
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/*
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* Copyright (c) 2005 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Andrew Brown.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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#ifndef lint
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__RCSID("$NetBSD: sockstat.c,v 1.15 2009/04/13 10:56:56 lukem Exp $");
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#endif
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#include <sys/types.h>
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#include <sys/param.h>
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#include <sys/sysctl.h>
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#include <sys/socket.h>
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#include <sys/socketvar.h>
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#include <sys/un.h>
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#include <netinet/in.h>
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#include <net/route.h>
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#include <netinet/in_systm.h>
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#include <netinet/ip.h>
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#include <netinet/in_pcb.h>
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#include <netinet/in_pcb_hdr.h>
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#include <netinet/tcp_fsm.h>
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#define _KERNEL
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/* want DTYPE_* defines */
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#include <sys/file.h>
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#undef _KERNEL
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#include <arpa/inet.h>
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#include <bitstring.h>
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#include <ctype.h>
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#include <err.h>
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#include <errno.h>
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#include <netdb.h>
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#include <pwd.h>
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#include <stdio.h>
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#include <strings.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <util.h>
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#define satosun(sa) ((struct sockaddr_un *)(sa))
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#define satosin(sa) ((struct sockaddr_in *)(sa))
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#ifdef INET6
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#define satosin6(sa) ((struct sockaddr_in6 *)(sa))
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#endif
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void parse_ports(const char *);
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int get_num(const char *, const char **, const char **);
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void get_sockets(const char *);
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void get_files(void);
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int sort_files(const void *, const void *);
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void sysctl_sucker(int *, u_int, void **, size_t *);
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void socket_add_hash(struct kinfo_pcb *, int);
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int isconnected(struct kinfo_pcb *);
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int islistening(struct kinfo_pcb *);
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struct kinfo_pcb *pick_socket(struct kinfo_file *);
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int get_proc(struct kinfo_proc2 *, int);
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int print_socket(struct kinfo_file *, struct kinfo_pcb *,
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struct kinfo_proc2 *);
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void print_addr(int, int, int, struct sockaddr *);
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LIST_HEAD(socklist, sockitem);
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#define HASHSIZE 1009
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struct socklist sockhash[HASHSIZE];
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struct sockitem {
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LIST_ENTRY(sockitem) s_list;
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struct kinfo_pcb *s_sock;
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};
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struct kinfo_file *flist;
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size_t flistc;
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int pf_list, only, nonames;
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bitstr_t *portmap;
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#define PF_LIST_INET 1
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#ifdef INET6
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#define PF_LIST_INET6 2
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#endif
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#define PF_LIST_LOCAL 4
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#define ONLY_CONNECTED 1
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#define ONLY_LISTEN 2
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int
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main(int argc, char *argv[])
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{
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struct kinfo_pcb *kp;
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int ch;
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size_t i;
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struct kinfo_proc2 p;
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pf_list = only = 0;
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#ifdef INET6
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while ((ch = getopt(argc, argv, "46cf:lnp:u")) != - 1) {
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#else
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while ((ch = getopt(argc, argv, "4cf:lnp:u")) != - 1) {
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#endif
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switch (ch) {
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case '4':
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pf_list |= PF_LIST_INET;
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break;
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#ifdef INET6
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case '6':
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pf_list |= PF_LIST_INET6;
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break;
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#endif
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case 'c':
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only |= ONLY_CONNECTED;
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break;
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case 'f':
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if (strcasecmp(optarg, "inet") == 0)
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pf_list |= PF_LIST_INET;
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#ifdef INET6
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else if (strcasecmp(optarg, "inet6") == 0)
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pf_list |= PF_LIST_INET6;
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#endif
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else if (strcasecmp(optarg, "local") == 0)
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pf_list |= PF_LIST_LOCAL;
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else if (strcasecmp(optarg, "unix") == 0)
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pf_list |= PF_LIST_LOCAL;
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else
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errx(1, "%s: unsupported protocol family",
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optarg);
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break;
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case 'l':
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only |= ONLY_LISTEN;
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break;
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case 'n':
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nonames++;
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break;
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case 'p':
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parse_ports(optarg);
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break;
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case 'u':
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pf_list |= PF_LIST_LOCAL;
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break;
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default:
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/* usage(); */
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exit(1);
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}
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}
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argc -= optind;
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argv += optind;
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if ((portmap != NULL) && (pf_list == 0)) {
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pf_list = PF_LIST_INET;
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#ifdef INET6
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pf_list |= PF_LIST_INET6;
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#endif
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}
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if (pf_list == 0) {
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pf_list = PF_LIST_INET | PF_LIST_LOCAL;
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#ifdef INET6
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pf_list |= PF_LIST_INET6;
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#endif
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}
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if ((portmap != NULL) && (pf_list & PF_LIST_LOCAL))
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errx(1, "local domain sockets do not have ports");
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if (pf_list & PF_LIST_INET) {
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get_sockets("net.inet.tcp.pcblist");
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get_sockets("net.inet.udp.pcblist");
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if (portmap == NULL)
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get_sockets("net.inet.raw.pcblist");
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}
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#ifdef INET6
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if (pf_list & PF_LIST_INET6) {
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get_sockets("net.inet6.tcp6.pcblist");
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get_sockets("net.inet6.udp6.pcblist");
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if (portmap == NULL)
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get_sockets("net.inet6.raw6.pcblist");
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}
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#endif
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if (pf_list & PF_LIST_LOCAL) {
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get_sockets("net.local.stream.pcblist");
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get_sockets("net.local.dgram.pcblist");
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}
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get_files();
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p.p_pid = 0;
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for (i = 0; i < flistc; i++)
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if ((kp = pick_socket(&flist[i])) != NULL &&
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get_proc(&p, flist[i].ki_pid) == 0)
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print_socket(&flist[i], kp, &p);
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return (0);
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}
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void
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parse_ports(const char *l)
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{
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struct servent *srv;
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const char *s, *e;
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long i, j;
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if (portmap == NULL) {
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portmap = bit_alloc(65536);
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if (portmap == NULL)
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err(1, "malloc");
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}
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if ((srv = getservbyname(l, NULL)) != NULL) {
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bit_set(portmap, ntohs(srv->s_port));
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return;
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}
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s = e = l;
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while (*s != '\0') {
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i = get_num(l, &s, &e);
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switch (*e) {
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case ',':
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e++;
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case '\0':
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bit_set(portmap, i);
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s = e;
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continue;
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case '-':
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s = ++e;
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j = get_num(l, &s, &e);
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for (; i <= j; i++)
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bit_set(portmap, i);
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break;
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default:
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errno = EINVAL;
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err(1, "%s", l);
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}
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}
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}
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int
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get_num(const char *l, const char **s, const char **e)
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{
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long x;
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char *t;
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while (isdigit((u_int)**e))
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(*e)++;
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if (*s != *e) {
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errno = 0;
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x = strtol(*s, &t, 0);
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if (errno == 0 && x >= 0 && x <= 65535 && t == *e)
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return (x);
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}
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errno = EINVAL;
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err(1, "%s", l);
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}
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void
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get_sockets(const char *mib)
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{
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void *v;
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size_t sz;
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int rc, n, name[CTL_MAXNAME];
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u_int namelen;
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sz = CTL_MAXNAME;
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rc = sysctlnametomib(mib, &name[0], &sz);
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if (rc == -1) {
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if (errno == ENOENT)
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return;
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err(1, "sysctlnametomib: %s", mib);
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}
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namelen = sz;
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name[namelen++] = PCB_ALL;
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name[namelen++] = 0; /* XXX all pids */
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name[namelen++] = sizeof(struct kinfo_pcb);
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name[namelen++] = INT_MAX; /* all of them */
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sysctl_sucker(&name[0], namelen, &v, &sz);
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n = sz / sizeof(struct kinfo_pcb);
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socket_add_hash(v, n);
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}
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void
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get_files(void)
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{
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void *v;
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size_t sz;
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int rc, name[CTL_MAXNAME];
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u_int namelen;
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sz = CTL_MAXNAME;
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rc = sysctlnametomib("kern.file2", &name[0], &sz);
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if (rc == -1)
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err(1, "sysctlnametomib");
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namelen = sz;
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name[namelen++] = KERN_FILE_BYPID;
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name[namelen++] = 0; /* XXX all pids */
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name[namelen++] = sizeof(struct kinfo_file);
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name[namelen++] = INT_MAX; /* all of them */
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sysctl_sucker(&name[0], namelen, &v, &sz);
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flist = v;
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flistc = sz / sizeof(struct kinfo_file);
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qsort(flist, flistc, sizeof(*flist), sort_files);
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}
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int
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sort_files(const void *a, const void *b)
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{
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const struct kinfo_file *ka = a, *kb = b;
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if (ka->ki_pid == kb->ki_pid)
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return (ka->ki_fd - kb->ki_fd);
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return (ka->ki_pid - kb->ki_pid);
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}
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void
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sysctl_sucker(int *name, u_int namelen, void **vp, size_t *szp)
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{
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int rc;
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void *v;
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size_t sz;
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/* printf("name %p, namelen %u\n", name, namelen); */
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v = NULL;
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sz = 0;
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do {
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rc = sysctl(&name[0], namelen, v, &sz, NULL, 0);
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if (rc == -1 && errno != ENOMEM)
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err(1, "sysctl");
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if (rc == -1 && v != NULL) {
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free(v);
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v = NULL;
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}
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if (v == NULL) {
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v = malloc(sz);
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rc = -1;
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}
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if (v == NULL)
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err(1, "malloc");
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} while (rc == -1);
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*vp = v;
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*szp = sz;
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/* printf("got %zu at %p\n", sz, v); */
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}
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void
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socket_add_hash(struct kinfo_pcb *kp, int n)
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{
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struct sockitem *si;
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int hash, i;
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if (n == 0)
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return;
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si = malloc(sizeof(*si) * n);
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if (si== NULL)
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err(1, "malloc");
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for (i = 0; i < n; i++) {
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si[i].s_sock = &kp[i];
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hash = (int)(kp[i].ki_sockaddr % HASHSIZE);
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LIST_INSERT_HEAD(&sockhash[hash], &si[i], s_list);
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}
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}
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int
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isconnected(struct kinfo_pcb *kp)
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{
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if ((kp->ki_sostate & SS_ISCONNECTED) ||
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(kp->ki_prstate >= INP_CONNECTED) ||
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(kp->ki_tstate > TCPS_LISTEN) ||
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(kp->ki_conn != 0))
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return (1);
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return (0);
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}
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int
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islistening(struct kinfo_pcb *kp)
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{
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if (isconnected(kp))
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return (0);
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if (kp->ki_tstate == TCPS_LISTEN)
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return (1);
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switch (kp->ki_family) {
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case PF_INET:
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if (kp->ki_type == SOCK_RAW ||
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(kp->ki_type == SOCK_DGRAM &&
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ntohs(satosin(&kp->ki_src)->sin_port) != 0))
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return (1);
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break;
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#ifdef INET6
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case PF_INET6:
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if (kp->ki_type == SOCK_RAW ||
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(kp->ki_type == SOCK_DGRAM &&
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ntohs(satosin6(&kp->ki_src)->sin6_port) != 0))
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return (1);
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break;
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#endif
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case PF_LOCAL:
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if (satosun(&kp->ki_src)->sun_path[0] != '\0')
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return (1);
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break;
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default:
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break;
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}
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return (0);
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}
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struct kinfo_pcb *
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pick_socket(struct kinfo_file *f)
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{
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struct sockitem *si;
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struct kinfo_pcb *kp;
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int hash;
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if (f->ki_ftype != DTYPE_SOCKET)
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return (NULL);
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hash = (int)(f->ki_fdata % HASHSIZE);
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LIST_FOREACH(si, &sockhash[hash], s_list) {
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if (si->s_sock->ki_sockaddr == f->ki_fdata)
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break;
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}
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if (si == NULL)
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return (NULL);
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kp = si->s_sock;
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if (only) {
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if (isconnected(kp)) {
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/*
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* connected but you didn't say you wanted
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* connected sockets
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*/
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if (!(only & ONLY_CONNECTED))
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return (NULL);
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}
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else if (islistening(kp)) {
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/*
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* listening but you didn't ask for listening
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* sockets
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*/
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if (!(only & ONLY_LISTEN))
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return (NULL);
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}
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else
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/*
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* neither connected nor listening, so you
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* don't get it
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*/
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return (NULL);
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}
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if (portmap) {
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switch (kp->ki_family) {
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case AF_INET:
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if (!bit_test(portmap,
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ntohs(satosin(&kp->ki_src)->sin_port)) &&
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!bit_test(portmap,
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ntohs(satosin(&kp->ki_dst)->sin_port)))
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return (NULL);
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break;
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#ifdef INET6
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case AF_INET6:
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if (!bit_test(portmap,
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ntohs(satosin6(&kp->ki_src)->sin6_port)) &&
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!bit_test(portmap,
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ntohs(satosin6(&kp->ki_dst)->sin6_port)))
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return (NULL);
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break;
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#endif
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default:
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return (NULL);
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}
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}
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return (kp);
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}
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int
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get_proc(struct kinfo_proc2 *p, int pid)
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{
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int name[6];
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u_int namelen;
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size_t sz;
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if (p->p_pid == pid)
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return (0);
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sz = sizeof(*p);
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namelen = 0;
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name[namelen++] = CTL_KERN;
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name[namelen++] = KERN_PROC2;
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name[namelen++] = KERN_PROC_PID;
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name[namelen++] = pid;
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name[namelen++] = sz;
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name[namelen++] = 1;
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return (sysctl(&name[0], namelen, p, &sz, NULL, 0));
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}
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int
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print_socket(struct kinfo_file *kf, struct kinfo_pcb *kp, struct kinfo_proc2 *p)
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{
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static int first = 1;
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struct passwd *pw;
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const char *t;
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char proto[22];
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if (first) {
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printf("%-8s " "%-10s " "%-5s " "%-2s " "%-6s "
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|
"%-21s " "%s\n",
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"USER", "COMMAND", "PID", "FD", "PROTO",
|
|
"LOCAL ADDRESS", "FOREIGN ADDRESS");
|
|
first = 0;
|
|
}
|
|
|
|
if ((pw = getpwuid(p->p_uid)) != NULL)
|
|
printf("%-8s ", pw->pw_name);
|
|
else
|
|
printf("%-8d ", (int)p->p_uid);
|
|
|
|
printf("%-10.10s ", p->p_comm);
|
|
printf("%-5d ", (int)kf->ki_pid);
|
|
printf("%2d ", (int)kf->ki_fd);
|
|
|
|
snprintf(proto, sizeof(proto), "%d/%d", kp->ki_family, kp->ki_protocol);
|
|
|
|
switch (kp->ki_family) {
|
|
case PF_INET:
|
|
switch (kp->ki_protocol) {
|
|
case IPPROTO_TCP: t = "tcp"; break;
|
|
case IPPROTO_UDP: t = "udp"; break;
|
|
case IPPROTO_RAW: t = "raw"; break;
|
|
default: t = proto; break;
|
|
}
|
|
break;
|
|
#ifdef INET6
|
|
case PF_INET6:
|
|
switch (kp->ki_protocol) {
|
|
case IPPROTO_TCP: t = "tcp6"; break;
|
|
case IPPROTO_UDP: t = "udp6"; break;
|
|
case IPPROTO_RAW: t = "raw6"; break;
|
|
default: t = proto; break;
|
|
}
|
|
break;
|
|
#endif
|
|
case PF_LOCAL:
|
|
switch (kp->ki_type) {
|
|
case SOCK_STREAM: t = "stream"; break;
|
|
case SOCK_DGRAM: t = "dgram"; break;
|
|
case SOCK_RAW: t = "raw"; break;
|
|
case SOCK_RDM: t = "rdm"; break;
|
|
case SOCK_SEQPACKET: t = "seq"; break;
|
|
default: t = proto; break;
|
|
}
|
|
break;
|
|
default:
|
|
snprintf(proto, sizeof(proto), "%d/%d/%d",
|
|
kp->ki_family, kp->ki_type, kp->ki_protocol);
|
|
t = proto;
|
|
break;
|
|
}
|
|
|
|
printf("%-6s ", t);
|
|
|
|
/*
|
|
if (kp->ki_family == PF_LOCAL) {
|
|
if (kp->ki_src.sa_len > 2) {
|
|
print_addr(0, kp->ki_type, kp->ki_pflags, &kp->ki_src);
|
|
if (kp->ki_dst.sa_family == PF_LOCAL)
|
|
printf(" ");
|
|
}
|
|
if (kp->ki_dst.sa_family == PF_LOCAL)
|
|
printf("-> ");
|
|
}
|
|
else */{
|
|
print_addr(21, kp->ki_type, kp->ki_pflags, &kp->ki_src);
|
|
printf(" ");
|
|
}
|
|
|
|
if (isconnected(kp))
|
|
print_addr(0, kp->ki_type, kp->ki_pflags, &kp->ki_dst);
|
|
else if (kp->ki_family == PF_INET
|
|
#ifdef INET6
|
|
|| kp->ki_family == PF_INET6
|
|
#endif
|
|
)
|
|
printf("%-*s", 0, "*.*");
|
|
/* else if (kp->ki_src.sa_len == 2)
|
|
printf("%-*s", 0, "-"); */
|
|
else
|
|
printf("-");
|
|
|
|
printf("\n");
|
|
|
|
return (0);
|
|
}
|
|
|
|
void
|
|
print_addr(int l, int t, int f, struct sockaddr *sa)
|
|
{
|
|
char sabuf[256], pbuf[32];
|
|
int r = 0;
|
|
|
|
if (!(f & INP_ANONPORT))
|
|
f = 0;
|
|
else
|
|
f = NI_NUMERICSERV;
|
|
if (t == SOCK_DGRAM)
|
|
f |= NI_DGRAM;
|
|
if (nonames)
|
|
f |= NI_NUMERICHOST|NI_NUMERICSERV;
|
|
|
|
getnameinfo(sa, sa->sa_len, sabuf, sizeof(sabuf),
|
|
pbuf, sizeof(pbuf), f);
|
|
|
|
switch (sa->sa_family) {
|
|
case PF_UNSPEC:
|
|
r = printf("(PF_UNSPEC)");
|
|
break;
|
|
case PF_INET: {
|
|
struct sockaddr_in *si = satosin(sa);
|
|
if (si->sin_addr.s_addr != INADDR_ANY)
|
|
r = printf("%s.%s", sabuf, pbuf);
|
|
else if (ntohs(si->sin_port) != 0)
|
|
r = printf("*.%s", pbuf);
|
|
else
|
|
r = printf("*.*");
|
|
break;
|
|
}
|
|
#ifdef INET6
|
|
case PF_INET6: {
|
|
struct sockaddr_in6 *si6 = satosin6(sa);
|
|
if (!IN6_IS_ADDR_UNSPECIFIED(&si6->sin6_addr))
|
|
r = printf("%s.%s", sabuf, pbuf);
|
|
else if (ntohs(si6->sin6_port) != 0)
|
|
r = printf("*.%s", pbuf);
|
|
else
|
|
r = printf("*.*");
|
|
break;
|
|
}
|
|
#endif
|
|
case PF_LOCAL: {
|
|
struct sockaddr_un *sun = satosun(sa);
|
|
r = printf("%s", sun->sun_path);
|
|
if (r == 0)
|
|
r = printf("-");
|
|
break;
|
|
}
|
|
default:
|
|
break;
|
|
}
|
|
|
|
if (r > 0)
|
|
l -= r;
|
|
if (l > 0)
|
|
printf("%*s", l, "");
|
|
}
|