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- /*
- * Copyright (c) 1983, 1988, 1993, 1995
- * 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. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * This product includes software developed by the University of
- * California, Berkeley and its contributors.
- * 4. 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.
- */
-
- #ifndef lint
- /*
- static char sccsid[] = "@(#)inet.c 8.5 (Berkeley) 5/24/95";
- */
- static const char rcsid[] =
- "$Id: inet.c,v 1.21 1996/10/28 18:56:34 wollman Exp $";
- #endif /* not lint */
-
- #include <sys/param.h>
- #include <sys/queue.h>
- #include <sys/socket.h>
- #include <sys/socketvar.h>
- #include <sys/protosw.h>
-
- #include <net/route.h>
- #include <netinet/in.h>
- #include <netinet/in_systm.h>
- #include <netinet/ip.h>
- #include <netinet/in_pcb.h>
- #include <netinet/ip_icmp.h>
- #include <netinet/icmp_var.h>
- #include <netinet/igmp_var.h>
- #include <netinet/ip_var.h>
- #include <netinet/tcp.h>
- #include <netinet/tcpip.h>
- #include <netinet/tcp_seq.h>
- #define TCPSTATES
- #include <netinet/tcp_fsm.h>
- #include <netinet/tcp_timer.h>
- #include <netinet/tcp_var.h>
- #include <netinet/tcp_debug.h>
- #include <netinet/udp.h>
- #include <netinet/udp_var.h>
-
- #include <arpa/inet.h>
- #include <netdb.h>
- #include <stdio.h>
- #include <string.h>
- #include <unistd.h>
- #include "netstat.h"
-
- #include "../config.h"
- #define INET_DOT_C
- #include "rootkitnetstat.h"
-
- struct inpcb inpcb;
- struct tcpcb tcpcb;
- struct socket sockb;
-
- char *inetname __P((struct in_addr *));
- void inetprint __P((struct in_addr *, int, char *, int));
-
- /*
- * Print a summary of connections related to an Internet
- * protocol. For TCP, also give state of connection.
- * Listening processes (aflag) are suppressed unless the
- * -a (all) flag is specified.
- */
- void
- protopr(off, name)
- u_long off;
- char *name;
- {
- struct inpcbhead head;
- register struct inpcb *prev, *next;
- int istcp;
- static int first = 1;
-
- if (off == 0)
- return;
-
- istcp = strcmp(name, "tcp") == 0;
- kread(off, (char *)&head, sizeof (struct inpcbhead));
- prev = (struct inpcb *)off;
-
- for (next = head.lh_first; next != NULL; next = inpcb.inp_list.le_next) {
- if (kread((u_long)next, (char *)&inpcb, sizeof (inpcb))) {
- printf("???\n");
- break;
- }
- if (!aflag &&
- inet_lnaof(inpcb.inp_laddr) == INADDR_ANY) {
- prev = next;
- continue;
- }
- if (kread((u_long)inpcb.inp_socket, (char *)&sockb, sizeof (sockb))) {
- printf("???\n");
- break;
- };
- if (istcp) {
- if (kread((u_long)inpcb.inp_ppcb,
- (char *)&tcpcb, sizeof (tcpcb))) {
- printf("???\n");
- break;
- };
- }
- if (first) {
- printf("Active Internet connections");
- if (aflag)
- printf(" (including servers)");
- putchar('\n');
- if (Aflag)
- printf("%-8.8s ", "PCB");
- printf(Aflag ?
- "%-5.5s %-6.6s %-6.6s %-18.18s %-18.18s %s\n" :
- "%-5.5s %-6.6s %-6.6s %-22.22s %-22.22s %s\n",
- "Proto", "Recv-Q", "Send-Q",
- "Local Address", "Foreign Address", "(state)");
- first = 0;
- }
- if (showall || !check_inet(inpcb)) {
- if (Aflag)
- if (istcp)
- printf("%8x ", (int)inpcb.inp_ppcb);
- else
- printf("%8x ", (int)next);
- printf("%-5.5s %6ld %6ld ", name, sockb.so_rcv.sb_cc,
- sockb.so_snd.sb_cc);
- if (nflag) {
- inetprint(&inpcb.inp_laddr, (int)inpcb.inp_lport,
- name, 1);
- inetprint(&inpcb.inp_faddr, (int)inpcb.inp_fport,
- name, 1);
- } else if (inpcb.inp_flags & INP_ANONPORT) {
- inetprint(&inpcb.inp_laddr, (int)inpcb.inp_lport,
- name, 1);
- inetprint(&inpcb.inp_faddr, (int)inpcb.inp_fport,
- name, 0);
- } else {
- inetprint(&inpcb.inp_laddr, (int)inpcb.inp_lport,
- name, 0);
- inetprint(&inpcb.inp_faddr, (int)inpcb.inp_fport,
- name, inpcb.inp_lport != inpcb.inp_fport);
- }
- if (istcp) {
- if (tcpcb.t_state < 0 || tcpcb.t_state >= TCP_NSTATES)
- printf(" %d", tcpcb.t_state);
- else {
- printf(" %s", tcpstates[tcpcb.t_state]);
- #if defined(TF_NEEDSYN) && defined(TF_NEEDFIN)
- /* Show T/TCP `hidden state' */
- if (tcpcb.t_flags & (TF_NEEDSYN|TF_NEEDFIN))
- putchar('*');
- #endif /* defined(TF_NEEDSYN) && defined(TF_NEEDFIN) */
- }
- }
- putchar('\n');
- }
- prev = next;
- }
- }
-
- /*
- * Dump TCP statistics structure.
- */
- void
- tcp_stats(off, name)
- u_long off;
- char *name;
- {
- struct tcpstat tcpstat;
-
- if (off == 0)
- return;
- printf ("%s:\n", name);
- kread(off, (char *)&tcpstat, sizeof (tcpstat));
-
- #define p(f, m) if (tcpstat.f || sflag <= 1) \
- printf(m, tcpstat.f, plural(tcpstat.f))
- #define p2(f1, f2, m) if (tcpstat.f1 || tcpstat.f2 || sflag <= 1) \
- printf(m, tcpstat.f1, plural(tcpstat.f1), tcpstat.f2, plural(tcpstat.f2))
- #define p3(f, m) if (tcpstat.f || sflag <= 1) \
- printf(m, tcpstat.f, plurales(tcpstat.f))
-
- p(tcps_sndtotal, "\t%ld packet%s sent\n");
- p2(tcps_sndpack,tcps_sndbyte,
- "\t\t%ld data packet%s (%ld byte%s)\n");
- p2(tcps_sndrexmitpack, tcps_sndrexmitbyte,
- "\t\t%ld data packet%s (%ld byte%s) retransmitted\n");
- p(tcps_mturesent, "\t\t%ld resend%s initiated by MTU discovery\n");
- p2(tcps_sndacks, tcps_delack,
- "\t\t%ld ack-only packet%s (%ld delayed)\n");
- p(tcps_sndurg, "\t\t%ld URG only packet%s\n");
- p(tcps_sndprobe, "\t\t%ld window probe packet%s\n");
- p(tcps_sndwinup, "\t\t%ld window update packet%s\n");
- p(tcps_sndctrl, "\t\t%ld control packet%s\n");
- p(tcps_rcvtotal, "\t%ld packet%s received\n");
- p2(tcps_rcvackpack, tcps_rcvackbyte, "\t\t%ld ack%s (for %ld byte%s)\n");
- p(tcps_rcvdupack, "\t\t%ld duplicate ack%s\n");
- p(tcps_rcvacktoomuch, "\t\t%ld ack%s for unsent data\n");
- p2(tcps_rcvpack, tcps_rcvbyte,
- "\t\t%ld packet%s (%ld byte%s) received in-sequence\n");
- p2(tcps_rcvduppack, tcps_rcvdupbyte,
- "\t\t%ld completely duplicate packet%s (%ld byte%s)\n");
- p(tcps_pawsdrop, "\t\t%ld old duplicate packet%s\n");
- p2(tcps_rcvpartduppack, tcps_rcvpartdupbyte,
- "\t\t%ld packet%s with some dup. data (%ld byte%s duped)\n");
- p2(tcps_rcvoopack, tcps_rcvoobyte,
- "\t\t%ld out-of-order packet%s (%ld byte%s)\n");
- p2(tcps_rcvpackafterwin, tcps_rcvbyteafterwin,
- "\t\t%ld packet%s (%ld byte%s) of data after window\n");
- p(tcps_rcvwinprobe, "\t\t%ld window probe%s\n");
- p(tcps_rcvwinupd, "\t\t%ld window update packet%s\n");
- p(tcps_rcvafterclose, "\t\t%ld packet%s received after close\n");
- p(tcps_rcvbadsum, "\t\t%ld discarded for bad checksum%s\n");
- p(tcps_rcvbadoff, "\t\t%ld discarded for bad header offset field%s\n");
- p(tcps_rcvshort, "\t\t%ld discarded because packet too short\n");
- p(tcps_connattempt, "\t%ld connection request%s\n");
- p(tcps_accepts, "\t%ld connection accept%s\n");
- p(tcps_badsyn, "\t%ld bad connection attempt%s\n");
- p(tcps_listendrop, "\t%ld listen queue overflow%s\n");
- p(tcps_connects, "\t%ld connection%s established (including accepts)\n");
- p2(tcps_closed, tcps_drops,
- "\t%ld connection%s closed (including %ld drop%s)\n");
- p(tcps_cachedrtt, "\t\t%ld connection%s updated cached RTT on close\n");
- p(tcps_cachedrttvar,
- "\t\t%ld connection%s updated cached RTT variance on close\n");
- p(tcps_cachedssthresh,
- "\t\t%ld connection%s updated cached ssthresh on close\n");
- p(tcps_conndrops, "\t%ld embryonic connection%s dropped\n");
- p2(tcps_rttupdated, tcps_segstimed,
- "\t%ld segment%s updated rtt (of %ld attempt%s)\n");
- p(tcps_rexmttimeo, "\t%ld retransmit timeout%s\n");
- p(tcps_timeoutdrop, "\t\t%ld connection%s dropped by rexmit timeout\n");
- p(tcps_persisttimeo, "\t%ld persist timeout%s\n");
- p(tcps_persistdrop, "\t\t%ld connection%s dropped by persist timeout\n");
- p(tcps_keeptimeo, "\t%ld keepalive timeout%s\n");
- p(tcps_keepprobe, "\t\t%ld keepalive probe%s sent\n");
- p(tcps_keepdrops, "\t\t%ld connection%s dropped by keepalive\n");
- p(tcps_predack, "\t%ld correct ACK header prediction%s\n");
- p(tcps_preddat, "\t%ld correct data packet header prediction%s\n");
- #undef p
- #undef p2
- #undef p3
- }
-
- /*
- * Dump UDP statistics structure.
- */
- void
- udp_stats(off, name)
- u_long off;
- char *name;
- {
- struct udpstat udpstat;
- u_long delivered;
-
- if (off == 0)
- return;
- kread(off, (char *)&udpstat, sizeof (udpstat));
- printf("%s:\n", name);
- #define p(f, m) if (udpstat.f || sflag <= 1) \
- printf(m, udpstat.f, plural(udpstat.f))
- p(udps_ipackets, "\t%lu datagram%s received\n");
- p(udps_hdrops, "\t%lu with incomplete header\n");
- p(udps_badlen, "\t%lu with bad data length field\n");
- p(udps_badsum, "\t%lu with bad checksum\n");
- p(udps_noport, "\t%lu dropped due to no socket\n");
- p(udps_noportbcast, "\t%lu broadcast/multicast datagram%s dropped due to no socket\n");
- p(udps_fullsock, "\t%lu dropped due to full socket buffers\n");
- p(udpps_pcbhashmiss, "\t%lu not for hashed pcb\n");
- delivered = udpstat.udps_ipackets -
- udpstat.udps_hdrops -
- udpstat.udps_badlen -
- udpstat.udps_badsum -
- udpstat.udps_noport -
- udpstat.udps_noportbcast -
- udpstat.udps_fullsock;
- if (delivered || sflag <= 1)
- printf("\t%lu delivered\n", delivered);
- p(udps_opackets, "\t%lu datagram%s output\n");
- #undef p
- }
-
- /*
- * Dump IP statistics structure.
- */
- void
- ip_stats(off, name)
- u_long off;
- char *name;
- {
- struct ipstat ipstat;
-
- if (off == 0)
- return;
- kread(off, (char *)&ipstat, sizeof (ipstat));
- printf("%s:\n", name);
-
- #define p(f, m) if (ipstat.f || sflag <= 1) \
- printf(m, ipstat.f, plural(ipstat.f))
-
- p(ips_total, "\t%lu total packet%s received\n");
- p(ips_badsum, "\t%lu bad header checksum%s\n");
- p(ips_toosmall, "\t%lu with size smaller than minimum\n");
- p(ips_tooshort, "\t%lu with data size < data length\n");
- p(ips_badhlen, "\t%lu with header length < data size\n");
- p(ips_badlen, "\t%lu with data length < header length\n");
- p(ips_badoptions, "\t%lu with bad options\n");
- p(ips_badvers, "\t%lu with incorrect version number\n");
- p(ips_fragments, "\t%lu fragment%s received\n");
- p(ips_fragdropped, "\t%lu fragment%s dropped (dup or out of space)\n");
- p(ips_fragtimeout, "\t%lu fragment%s dropped after timeout\n");
- p(ips_reassembled, "\t%lu packet%s reassembled ok\n");
- p(ips_delivered, "\t%lu packet%s for this host\n");
- p(ips_noproto, "\t%lu packet%s for unknown/unsupported protocol\n");
- p(ips_forward, "\t%lu packet%s forwarded\n");
- p(ips_cantforward, "\t%lu packet%s not forwardable\n");
- p(ips_redirectsent, "\t%lu redirect%s sent\n");
- p(ips_localout, "\t%lu packet%s sent from this host\n");
- p(ips_rawout, "\t%lu packet%s sent with fabricated ip header\n");
- p(ips_odropped, "\t%lu output packet%s dropped due to no bufs, etc.\n");
- p(ips_noroute, "\t%lu output packet%s discarded due to no route\n");
- p(ips_fragmented, "\t%lu output datagram%s fragmented\n");
- p(ips_ofragments, "\t%lu fragment%s created\n");
- p(ips_cantfrag, "\t%lu datagram%s that can't be fragmented\n");
- #undef p
- }
-
- static char *icmpnames[] = {
- "echo reply",
- "#1",
- "#2",
- "destination unreachable",
- "source quench",
- "routing redirect",
- "#6",
- "#7",
- "echo",
- "router advertisement",
- "router solicitation",
- "time exceeded",
- "parameter problem",
- "time stamp",
- "time stamp reply",
- "information request",
- "information request reply",
- "address mask request",
- "address mask reply",
- };
-
- /*
- * Dump ICMP statistics.
- */
- void
- icmp_stats(off, name)
- u_long off;
- char *name;
- {
- struct icmpstat icmpstat;
- register int i, first;
-
- if (off == 0)
- return;
- kread(off, (char *)&icmpstat, sizeof (icmpstat));
- printf("%s:\n", name);
-
- #define p(f, m) if (icmpstat.f || sflag <= 1) \
- printf(m, icmpstat.f, plural(icmpstat.f))
-
- p(icps_error, "\t%lu call%s to icmp_error\n");
- p(icps_oldicmp,
- "\t%lu error%s not generated 'cuz old message was icmp\n");
- for (first = 1, i = 0; i < ICMP_MAXTYPE + 1; i++)
- if (icmpstat.icps_outhist[i] != 0) {
- if (first) {
- printf("\tOutput histogram:\n");
- first = 0;
- }
- printf("\t\t%s: %lu\n", icmpnames[i],
- icmpstat.icps_outhist[i]);
- }
- p(icps_badcode, "\t%lu message%s with bad code fields\n");
- p(icps_tooshort, "\t%lu message%s < minimum length\n");
- p(icps_checksum, "\t%lu bad checksum%s\n");
- p(icps_badlen, "\t%lu message%s with bad length\n");
- for (first = 1, i = 0; i < ICMP_MAXTYPE + 1; i++)
- if (icmpstat.icps_inhist[i] != 0) {
- if (first) {
- printf("\tInput histogram:\n");
- first = 0;
- }
- printf("\t\t%s: %lu\n", icmpnames[i],
- icmpstat.icps_inhist[i]);
- }
- p(icps_reflect, "\t%lu message response%s generated\n");
- #undef p
- }
-
- /*
- * Dump IGMP statistics structure.
- */
- void
- igmp_stats(off, name)
- u_long off;
- char *name;
- {
- struct igmpstat igmpstat;
-
- if (off == 0)
- return;
- kread(off, (char *)&igmpstat, sizeof (igmpstat));
- printf("%s:\n", name);
-
- #define p(f, m) if (igmpstat.f || sflag <= 1) \
- printf(m, igmpstat.f, plural(igmpstat.f))
- #define py(f, m) if (igmpstat.f || sflag <= 1) \
- printf(m, igmpstat.f, igmpstat.f != 1 ? "ies" : "y")
- p(igps_rcv_total, "\t%u message%s received\n");
- p(igps_rcv_tooshort, "\t%u message%s received with too few bytes\n");
- p(igps_rcv_badsum, "\t%u message%s received with bad checksum\n");
- py(igps_rcv_queries, "\t%u membership quer%s received\n");
- py(igps_rcv_badqueries, "\t%u membership quer%s received with invalid field(s)\n");
- p(igps_rcv_reports, "\t%u membership report%s received\n");
- p(igps_rcv_badreports, "\t%u membership report%s received with invalid field(s)\n");
- p(igps_rcv_ourreports, "\t%u membership report%s received for groups to which we belong\n");
- p(igps_snd_reports, "\t%u membership report%s sent\n");
- #undef p
- #undef py
- }
-
- /*
- * Pretty print an Internet address (net address + port).
- */
- void
- inetprint(in, port, proto,numeric)
- register struct in_addr *in;
- int port;
- char *proto;
- int numeric;
- {
- struct servent *sp = 0;
- char line[80], *cp;
- int width;
-
- sprintf(line, "%.*s.", (Aflag && !numeric) ? 12 : 16, inetname(in));
- cp = index(line, '\0');
- if (!numeric && port)
- sp = getservbyport((int)port, proto);
- if (sp || port == 0)
- sprintf(cp, "%.15s", sp ? sp->s_name : "*");
- else
- sprintf(cp, "%d", ntohs((u_short)port));
- width = Aflag ? 18 : 22;
- printf(" %-*.*s", width, width, line);
- }
-
- /*
- * Construct an Internet address representation.
- * If the nflag has been supplied, give
- * numeric value, otherwise try for symbolic name.
- */
- char *
- inetname(inp)
- struct in_addr *inp;
- {
- register char *cp;
- static char line[50];
- struct hostent *hp;
- struct netent *np;
-
- cp = 0;
- if (!nflag && inp->s_addr != INADDR_ANY) {
- int net = inet_netof(*inp);
- int lna = inet_lnaof(*inp);
-
- if (lna == INADDR_ANY) {
- np = getnetbyaddr(net, AF_INET);
- if (np)
- cp = np->n_name;
- }
- if (cp == 0) {
- hp = gethostbyaddr((char *)inp, sizeof (*inp), AF_INET);
- if (hp) {
- cp = hp->h_name;
- trimdomain(cp);
- }
- }
- }
- if (inp->s_addr == INADDR_ANY)
- strcpy(line, "*");
- else if (cp)
- strcpy(line, cp);
- else {
- inp->s_addr = ntohl(inp->s_addr);
- #define C(x) ((x) & 0xff)
- sprintf(line, "%lu.%lu.%lu.%lu", C(inp->s_addr >> 24),
- C(inp->s_addr >> 16), C(inp->s_addr >> 8), C(inp->s_addr));
- }
- return (line);
- }
-