diff options
Diffstat (limited to 'freebsd-userspace/commands/usr.bin/netstat/inet.c')
| -rw-r--r-- | freebsd-userspace/commands/usr.bin/netstat/inet.c | 1291 |
1 files changed, 1291 insertions, 0 deletions
diff --git a/freebsd-userspace/commands/usr.bin/netstat/inet.c b/freebsd-userspace/commands/usr.bin/netstat/inet.c new file mode 100644 index 00000000..37b650c5 --- /dev/null +++ b/freebsd-userspace/commands/usr.bin/netstat/inet.c @@ -0,0 +1,1291 @@ +/*- + * 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. + */ + +#if 0 +#ifndef lint +static char sccsid[] = "@(#)inet.c 8.5 (Berkeley) 5/24/95"; +#endif /* not lint */ +#endif + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include <sys/param.h> +#include <sys/queue.h> +#ifdef __rtems__ +#include <freebsd/sys/domain.h> +#include <freebsd/sys/protosw.h> +#else +#include <sys/domain.h> +#include <sys/protosw.h> +#endif +#include <sys/socket.h> +#include <sys/socketvar.h> +#include <sys/sysctl.h> + +#include <net/route.h> +#include <net/if_arp.h> +#include <netinet/in.h> +#include <netinet/in_systm.h> +#include <netinet/ip.h> +#ifdef __rtems__ +#include <freebsd/netinet/ip_carp.h> +#else +#include <netinet/ip_carp.h> +#endif +#ifdef INET6 +#include <netinet/ip6.h> +#endif /* INET6 */ +#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/pim_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 <err.h> +#include <errno.h> +#include <libutil.h> +#include <netdb.h> +#include <stdint.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <unistd.h> +#include "netstat.h" + +char *inetname(struct in_addr *); +void inetprint(struct in_addr *, int, const char *, int); +#ifdef INET6 +static int udp_done, tcp_done; +#endif /* INET6 */ + +static int +pcblist_sysctl(int proto, char **bufp, int istcp) +{ + const char *mibvar; + char *buf; + size_t len; + + switch (proto) { + case IPPROTO_TCP: + mibvar = "net.inet.tcp.pcblist"; + break; + case IPPROTO_UDP: + mibvar = "net.inet.udp.pcblist"; + break; + case IPPROTO_DIVERT: + mibvar = "net.inet.divert.pcblist"; + break; + default: + mibvar = "net.inet.raw.pcblist"; + break; + } + + len = 0; + if (sysctlbyname(mibvar, 0, &len, 0, 0) < 0) { + if (errno != ENOENT) + warn("sysctl: %s", mibvar); + return (0); + } + if ((buf = malloc(len)) == 0) { + warnx("malloc %lu bytes", (u_long)len); + return (0); + } + if (sysctlbyname(mibvar, buf, &len, 0, 0) < 0) { + warn("sysctl: %s", mibvar); + free(buf); + return (0); + } + *bufp = buf; + return (1); +} + +/* + * Copied directly from uipc_socket2.c. We leave out some fields that are in + * nested structures that aren't used to avoid extra work. + */ +static void +sbtoxsockbuf(struct sockbuf *sb, struct xsockbuf *xsb) +{ + xsb->sb_cc = sb->sb_cc; + xsb->sb_hiwat = sb->sb_hiwat; + xsb->sb_mbcnt = sb->sb_mbcnt; + xsb->sb_mcnt = sb->sb_mcnt; + xsb->sb_ccnt = sb->sb_ccnt; + xsb->sb_mbmax = sb->sb_mbmax; + xsb->sb_lowat = sb->sb_lowat; + xsb->sb_flags = sb->sb_flags; + xsb->sb_timeo = sb->sb_timeo; +} + +int +sotoxsocket(struct socket *so, struct xsocket *xso) +{ + struct protosw proto; + struct domain domain; + + bzero(xso, sizeof *xso); + xso->xso_len = sizeof *xso; + xso->xso_so = so; + xso->so_type = so->so_type; + xso->so_options = so->so_options; + xso->so_linger = so->so_linger; + xso->so_state = so->so_state; + xso->so_pcb = so->so_pcb; + if (kread((uintptr_t)so->so_proto, &proto, sizeof(proto)) != 0) + return (-1); + xso->xso_protocol = proto.pr_protocol; + if (kread((uintptr_t)proto.pr_domain, &domain, sizeof(domain)) != 0) + return (-1); + xso->xso_family = domain.dom_family; + xso->so_qlen = so->so_qlen; + xso->so_incqlen = so->so_incqlen; + xso->so_qlimit = so->so_qlimit; + xso->so_timeo = so->so_timeo; + xso->so_error = so->so_error; + xso->so_oobmark = so->so_oobmark; + sbtoxsockbuf(&so->so_snd, &xso->so_snd); + sbtoxsockbuf(&so->so_rcv, &xso->so_rcv); + return (0); +} + +static int +pcblist_kvm(u_long off, char **bufp, int istcp) +{ + struct inpcbinfo pcbinfo; + struct inpcbhead listhead; + struct inpcb *inp; + struct xinpcb xi; + struct xinpgen xig; + struct xtcpcb xt; + struct socket so; + struct xsocket *xso; + char *buf, *p; + size_t len; + + if (off == 0) + return (0); + kread(off, &pcbinfo, sizeof(pcbinfo)); + if (istcp) + len = 2 * sizeof(xig) + + (pcbinfo.ipi_count + pcbinfo.ipi_count / 8) * + sizeof(struct xtcpcb); + else + len = 2 * sizeof(xig) + + (pcbinfo.ipi_count + pcbinfo.ipi_count / 8) * + sizeof(struct xinpcb); + if ((buf = malloc(len)) == 0) { + warnx("malloc %lu bytes", (u_long)len); + return (0); + } + p = buf; + +#define COPYOUT(obj, size) do { \ + if (len < (size)) { \ + warnx("buffer size exceeded"); \ + goto fail; \ + } \ + bcopy((obj), p, (size)); \ + len -= (size); \ + p += (size); \ +} while (0) + +#define KREAD(off, buf, len) do { \ + if (kread((uintptr_t)(off), (buf), (len)) != 0) \ + goto fail; \ +} while (0) + + /* Write out header. */ + xig.xig_len = sizeof xig; + xig.xig_count = pcbinfo.ipi_count; + xig.xig_gen = pcbinfo.ipi_gencnt; + xig.xig_sogen = 0; + COPYOUT(&xig, sizeof xig); + + /* Walk the PCB list. */ + xt.xt_len = sizeof xt; + xi.xi_len = sizeof xi; + if (istcp) + xso = &xt.xt_socket; + else + xso = &xi.xi_socket; + KREAD(pcbinfo.ipi_listhead, &listhead, sizeof(listhead)); + LIST_FOREACH(inp, &listhead, inp_list) { + if (istcp) { + KREAD(inp, &xt.xt_inp, sizeof(*inp)); + inp = &xt.xt_inp; + } else { + KREAD(inp, &xi.xi_inp, sizeof(*inp)); + inp = &xi.xi_inp; + } + + if (inp->inp_gencnt > pcbinfo.ipi_gencnt) + continue; + + if (istcp) { + if (inp->inp_ppcb == NULL) + bzero(&xt.xt_tp, sizeof xt.xt_tp); + else if (inp->inp_flags & INP_TIMEWAIT) { + bzero(&xt.xt_tp, sizeof xt.xt_tp); + xt.xt_tp.t_state = TCPS_TIME_WAIT; + } else + KREAD(inp->inp_ppcb, &xt.xt_tp, + sizeof xt.xt_tp); + } + if (inp->inp_socket) { + KREAD(inp->inp_socket, &so, sizeof(so)); + if (sotoxsocket(&so, xso) != 0) + goto fail; + } else { + bzero(xso, sizeof(*xso)); + if (istcp) + xso->xso_protocol = IPPROTO_TCP; + } + if (istcp) + COPYOUT(&xt, sizeof xt); + else + COPYOUT(&xi, sizeof xi); + } + + /* Reread the pcbinfo and write out the footer. */ + kread(off, &pcbinfo, sizeof(pcbinfo)); + xig.xig_count = pcbinfo.ipi_count; + xig.xig_gen = pcbinfo.ipi_gencnt; + COPYOUT(&xig, sizeof xig); + + *bufp = buf; + return (1); + +fail: + free(buf); + return (0); +#undef COPYOUT +#undef KREAD +} + +/* + * 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(u_long off, const char *name, int af1, int proto) +{ + int istcp; + static int first = 1; + char *buf; + const char *vchar; + struct tcpcb *tp = NULL; + struct inpcb *inp; + struct xinpgen *xig, *oxig; + struct xsocket *so; + + istcp = 0; + switch (proto) { + case IPPROTO_TCP: +#ifdef INET6 + if (tcp_done != 0) + return; + else + tcp_done = 1; +#endif + istcp = 1; + break; + case IPPROTO_UDP: +#ifdef INET6 + if (udp_done != 0) + return; + else + udp_done = 1; +#endif + break; + } + if (live) { + if (!pcblist_sysctl(proto, &buf, istcp)) + return; + } else { + if (!pcblist_kvm(off, &buf, istcp)) + return; + } + + oxig = xig = (struct xinpgen *)buf; + for (xig = (struct xinpgen *)((char *)xig + xig->xig_len); + xig->xig_len > sizeof(struct xinpgen); + xig = (struct xinpgen *)((char *)xig + xig->xig_len)) { + if (istcp) { + tp = &((struct xtcpcb *)xig)->xt_tp; + inp = &((struct xtcpcb *)xig)->xt_inp; + so = &((struct xtcpcb *)xig)->xt_socket; + } else { + inp = &((struct xinpcb *)xig)->xi_inp; + so = &((struct xinpcb *)xig)->xi_socket; + } + + /* Ignore sockets for protocols other than the desired one. */ + if (so->xso_protocol != proto) + continue; + + /* Ignore PCBs which were freed during copyout. */ + if (inp->inp_gencnt > oxig->xig_gen) + continue; + + if ((af1 == AF_INET && (inp->inp_vflag & INP_IPV4) == 0) +#ifdef INET6 + || (af1 == AF_INET6 && (inp->inp_vflag & INP_IPV6) == 0) +#endif /* INET6 */ + || (af1 == AF_UNSPEC && ((inp->inp_vflag & INP_IPV4) == 0 +#ifdef INET6 + && (inp->inp_vflag & INP_IPV6) == 0 +#endif /* INET6 */ + )) + ) + continue; + if (!aflag && + ( + (istcp && tp->t_state == TCPS_LISTEN) + || (af1 == AF_INET && + inet_lnaof(inp->inp_laddr) == INADDR_ANY) +#ifdef INET6 + || (af1 == AF_INET6 && + IN6_IS_ADDR_UNSPECIFIED(&inp->in6p_laddr)) +#endif /* INET6 */ + || (af1 == AF_UNSPEC && + (((inp->inp_vflag & INP_IPV4) != 0 && + inet_lnaof(inp->inp_laddr) == INADDR_ANY) +#ifdef INET6 + || ((inp->inp_vflag & INP_IPV6) != 0 && + IN6_IS_ADDR_UNSPECIFIED(&inp->in6p_laddr)) +#endif + )) + )) + continue; + + if (first) { + if (!Lflag) { + printf("Active Internet connections"); + if (aflag) + printf(" (including servers)"); + } else + printf( + "Current listen queue sizes (qlen/incqlen/maxqlen)"); + putchar('\n'); + if (Aflag) + printf("%-8.8s ", "Tcpcb"); + if (Lflag) + printf("%-5.5s %-14.14s %-22.22s\n", + "Proto", "Listen", "Local Address"); + else { + printf((Aflag && !Wflag) ? + "%-5.5s %-6.6s %-6.6s %-18.18s %-18.18s" : + "%-5.5s %-6.6s %-6.6s %-22.22s %-22.22s", + "Proto", "Recv-Q", "Send-Q", + "Local Address", "Foreign Address"); + if (xflag) + printf("%-6.6s %-6.6s %-6.6s %-6.6s %-6.6s %-6.6s %-6.6s %-6.6s %-6.6s %-6.6s %-6.6s %-6.6s %s\n", + "R-MBUF", "S-MBUF", "R-CLUS", + "S-CLUS", "R-HIWA", "S-HIWA", + "R-LOWA", "S-LOWA", "R-BCNT", + "S-BCNT", "R-BMAX", "S-BMAX", + "(state)"); + else + printf("(state)\n"); + } + first = 0; + } + if (Lflag && so->so_qlimit == 0) + continue; + if (Aflag) { + if (istcp) + printf("%8lx ", (u_long)inp->inp_ppcb); + else + printf("%8lx ", (u_long)so->so_pcb); + } +#ifdef INET6 + if ((inp->inp_vflag & INP_IPV6) != 0) + vchar = ((inp->inp_vflag & INP_IPV4) != 0) ? + "46" : "6 "; + else +#endif + vchar = ((inp->inp_vflag & INP_IPV4) != 0) ? + "4 " : " "; + printf("%-3.3s%-2.2s ", name, vchar); + if (Lflag) { + char buf1[15]; + + snprintf(buf1, 15, "%d/%d/%d", so->so_qlen, + so->so_incqlen, so->so_qlimit); + printf("%-14.14s ", buf1); + } else { + printf("%6u %6u ", so->so_rcv.sb_cc, so->so_snd.sb_cc); + } + if (numeric_port) { + if (inp->inp_vflag & INP_IPV4) { + inetprint(&inp->inp_laddr, (int)inp->inp_lport, + name, 1); + if (!Lflag) + inetprint(&inp->inp_faddr, + (int)inp->inp_fport, name, 1); + } +#ifdef INET6 + else if (inp->inp_vflag & INP_IPV6) { + inet6print(&inp->in6p_laddr, + (int)inp->inp_lport, name, 1); + if (!Lflag) + inet6print(&inp->in6p_faddr, + (int)inp->inp_fport, name, 1); + } /* else nothing printed now */ +#endif /* INET6 */ + } else if (inp->inp_flags & INP_ANONPORT) { + if (inp->inp_vflag & INP_IPV4) { + inetprint(&inp->inp_laddr, (int)inp->inp_lport, + name, 1); + if (!Lflag) + inetprint(&inp->inp_faddr, + (int)inp->inp_fport, name, 0); + } +#ifdef INET6 + else if (inp->inp_vflag & INP_IPV6) { + inet6print(&inp->in6p_laddr, + (int)inp->inp_lport, name, 1); + if (!Lflag) + inet6print(&inp->in6p_faddr, + (int)inp->inp_fport, name, 0); + } /* else nothing printed now */ +#endif /* INET6 */ + } else { + if (inp->inp_vflag & INP_IPV4) { + inetprint(&inp->inp_laddr, (int)inp->inp_lport, + name, 0); + if (!Lflag) + inetprint(&inp->inp_faddr, + (int)inp->inp_fport, name, + inp->inp_lport != inp->inp_fport); + } +#ifdef INET6 + else if (inp->inp_vflag & INP_IPV6) { + inet6print(&inp->in6p_laddr, + (int)inp->inp_lport, name, 0); + if (!Lflag) + inet6print(&inp->in6p_faddr, + (int)inp->inp_fport, name, + inp->inp_lport != inp->inp_fport); + } /* else nothing printed now */ +#endif /* INET6 */ + } + if (xflag) { + if (Lflag) + printf("%21s %6u %6u %6u %6u %6u %6u %6u %6u %6u %6u %6u %6u ", + " ", + so->so_rcv.sb_mcnt, so->so_snd.sb_mcnt, + so->so_rcv.sb_ccnt, so->so_snd.sb_ccnt, + so->so_rcv.sb_hiwat, so->so_snd.sb_hiwat, + so->so_rcv.sb_lowat, so->so_snd.sb_lowat, + so->so_rcv.sb_mbcnt, so->so_snd.sb_mbcnt, + so->so_rcv.sb_mbmax, so->so_snd.sb_mbmax); + else + printf("%6u %6u %6u %6u %6u %6u %6u %6u %6u %6u %6u %6u ", + so->so_rcv.sb_mcnt, so->so_snd.sb_mcnt, + so->so_rcv.sb_ccnt, so->so_snd.sb_ccnt, + so->so_rcv.sb_hiwat, so->so_snd.sb_hiwat, + so->so_rcv.sb_lowat, so->so_snd.sb_lowat, + so->so_rcv.sb_mbcnt, so->so_snd.sb_mbcnt, + so->so_rcv.sb_mbmax, so->so_snd.sb_mbmax); + } + if (istcp && !Lflag) { + if (tp->t_state < 0 || tp->t_state >= TCP_NSTATES) + printf("%d", tp->t_state); + else { + printf("%s", tcpstates[tp->t_state]); +#if defined(TF_NEEDSYN) && defined(TF_NEEDFIN) + /* Show T/TCP `hidden state' */ + if (tp->t_flags & (TF_NEEDSYN|TF_NEEDFIN)) + putchar('*'); +#endif /* defined(TF_NEEDSYN) && defined(TF_NEEDFIN) */ + } + } + putchar('\n'); + } + if (xig != oxig && xig->xig_gen != oxig->xig_gen) { + if (oxig->xig_count > xig->xig_count) { + printf("Some %s sockets may have been deleted.\n", + name); + } else if (oxig->xig_count < xig->xig_count) { + printf("Some %s sockets may have been created.\n", + name); + } else { + printf( + "Some %s sockets may have been created or deleted.\n", + name); + } + } + free(buf); +} + +/* + * Dump TCP statistics structure. + */ +void +tcp_stats(u_long off, const char *name, int af1 __unused, int proto __unused) +{ + struct tcpstat tcpstat, zerostat; + size_t len = sizeof tcpstat; + +#ifdef INET6 + if (tcp_done != 0) + return; + else + tcp_done = 1; +#endif + + if (live) { + if (zflag) + memset(&zerostat, 0, len); + if (sysctlbyname("net.inet.tcp.stats", &tcpstat, &len, + zflag ? &zerostat : NULL, zflag ? len : 0) < 0) { + warn("sysctl: net.inet.tcp.stats"); + return; + } + } else + kread(off, &tcpstat, len); + + printf ("%s:\n", name); + +#define p(f, m) if (tcpstat.f || sflag <= 1) \ + printf(m, tcpstat.f, plural(tcpstat.f)) +#define p1a(f, m) if (tcpstat.f || sflag <= 1) \ + printf(m, 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 p2a(f1, f2, m) if (tcpstat.f1 || tcpstat.f2 || sflag <= 1) \ + printf(m, tcpstat.f1, plural(tcpstat.f1), tcpstat.f2) +#define p3(f, m) if (tcpstat.f || sflag <= 1) \ + printf(m, tcpstat.f, pluralies(tcpstat.f)) + + p(tcps_sndtotal, "\t%lu packet%s sent\n"); + p2(tcps_sndpack,tcps_sndbyte, "\t\t%lu data packet%s (%lu byte%s)\n"); + p2(tcps_sndrexmitpack, tcps_sndrexmitbyte, + "\t\t%lu data packet%s (%lu byte%s) retransmitted\n"); + p(tcps_sndrexmitbad, + "\t\t%lu data packet%s unnecessarily retransmitted\n"); + p(tcps_mturesent, "\t\t%lu resend%s initiated by MTU discovery\n"); + p2a(tcps_sndacks, tcps_delack, + "\t\t%lu ack-only packet%s (%lu delayed)\n"); + p(tcps_sndurg, "\t\t%lu URG only packet%s\n"); + p(tcps_sndprobe, "\t\t%lu window probe packet%s\n"); + p(tcps_sndwinup, "\t\t%lu window update packet%s\n"); + p(tcps_sndctrl, "\t\t%lu control packet%s\n"); + p(tcps_rcvtotal, "\t%lu packet%s received\n"); + p2(tcps_rcvackpack, tcps_rcvackbyte, + "\t\t%lu ack%s (for %lu byte%s)\n"); + p(tcps_rcvdupack, "\t\t%lu duplicate ack%s\n"); + p(tcps_rcvacktoomuch, "\t\t%lu ack%s for unsent data\n"); + p2(tcps_rcvpack, tcps_rcvbyte, + "\t\t%lu packet%s (%lu byte%s) received in-sequence\n"); + p2(tcps_rcvduppack, tcps_rcvdupbyte, + "\t\t%lu completely duplicate packet%s (%lu byte%s)\n"); + p(tcps_pawsdrop, "\t\t%lu old duplicate packet%s\n"); + p2(tcps_rcvpartduppack, tcps_rcvpartdupbyte, + "\t\t%lu packet%s with some dup. data (%lu byte%s duped)\n"); + p2(tcps_rcvoopack, tcps_rcvoobyte, + "\t\t%lu out-of-order packet%s (%lu byte%s)\n"); + p2(tcps_rcvpackafterwin, tcps_rcvbyteafterwin, + "\t\t%lu packet%s (%lu byte%s) of data after window\n"); + p(tcps_rcvwinprobe, "\t\t%lu window probe%s\n"); + p(tcps_rcvwinupd, "\t\t%lu window update packet%s\n"); + p(tcps_rcvafterclose, "\t\t%lu packet%s received after close\n"); + p(tcps_rcvbadsum, "\t\t%lu discarded for bad checksum%s\n"); + p(tcps_rcvbadoff, "\t\t%lu discarded for bad header offset field%s\n"); + p1a(tcps_rcvshort, "\t\t%lu discarded because packet too short\n"); + p1a(tcps_rcvmemdrop, "\t\t%lu discarded due to memory problems\n"); + p(tcps_connattempt, "\t%lu connection request%s\n"); + p(tcps_accepts, "\t%lu connection accept%s\n"); + p(tcps_badsyn, "\t%lu bad connection attempt%s\n"); + p(tcps_listendrop, "\t%lu listen queue overflow%s\n"); + p(tcps_badrst, "\t%lu ignored RSTs in the window%s\n"); + p(tcps_connects, "\t%lu connection%s established (including accepts)\n"); + p2(tcps_closed, tcps_drops, + "\t%lu connection%s closed (including %lu drop%s)\n"); + p(tcps_cachedrtt, "\t\t%lu connection%s updated cached RTT on close\n"); + p(tcps_cachedrttvar, + "\t\t%lu connection%s updated cached RTT variance on close\n"); + p(tcps_cachedssthresh, + "\t\t%lu connection%s updated cached ssthresh on close\n"); + p(tcps_conndrops, "\t%lu embryonic connection%s dropped\n"); + p2(tcps_rttupdated, tcps_segstimed, + "\t%lu segment%s updated rtt (of %lu attempt%s)\n"); + p(tcps_rexmttimeo, "\t%lu retransmit timeout%s\n"); + p(tcps_timeoutdrop, "\t\t%lu connection%s dropped by rexmit timeout\n"); + p(tcps_persisttimeo, "\t%lu persist timeout%s\n"); + p(tcps_persistdrop, "\t\t%lu connection%s dropped by persist timeout\n"); + p(tcps_finwait2_drops, + "\t%lu Connection%s (fin_wait_2) dropped because of timeout\n"); + p(tcps_keeptimeo, "\t%lu keepalive timeout%s\n"); + p(tcps_keepprobe, "\t\t%lu keepalive probe%s sent\n"); + p(tcps_keepdrops, "\t\t%lu connection%s dropped by keepalive\n"); + p(tcps_predack, "\t%lu correct ACK header prediction%s\n"); + p(tcps_preddat, "\t%lu correct data packet header prediction%s\n"); + + p3(tcps_sc_added, "\t%lu syncache entr%s added\n"); + p1a(tcps_sc_retransmitted, "\t\t%lu retransmitted\n"); + p1a(tcps_sc_dupsyn, "\t\t%lu dupsyn\n"); + p1a(tcps_sc_dropped, "\t\t%lu dropped\n"); + p1a(tcps_sc_completed, "\t\t%lu completed\n"); + p1a(tcps_sc_bucketoverflow, "\t\t%lu bucket overflow\n"); + p1a(tcps_sc_cacheoverflow, "\t\t%lu cache overflow\n"); + p1a(tcps_sc_reset, "\t\t%lu reset\n"); + p1a(tcps_sc_stale, "\t\t%lu stale\n"); + p1a(tcps_sc_aborted, "\t\t%lu aborted\n"); + p1a(tcps_sc_badack, "\t\t%lu badack\n"); + p1a(tcps_sc_unreach, "\t\t%lu unreach\n"); + p(tcps_sc_zonefail, "\t\t%lu zone failure%s\n"); + p(tcps_sc_sendcookie, "\t%lu cookie%s sent\n"); + p(tcps_sc_recvcookie, "\t%lu cookie%s received\n"); + + p(tcps_sack_recovery_episode, "\t%lu SACK recovery episode%s\n"); + p(tcps_sack_rexmits, + "\t%lu segment rexmit%s in SACK recovery episodes\n"); + p(tcps_sack_rexmit_bytes, + "\t%lu byte rexmit%s in SACK recovery episodes\n"); + p(tcps_sack_rcv_blocks, + "\t%lu SACK option%s (SACK blocks) received\n"); + p(tcps_sack_send_blocks, "\t%lu SACK option%s (SACK blocks) sent\n"); + p1a(tcps_sack_sboverflow, "\t%lu SACK scoreboard overflow\n"); + + p(tcps_ecn_ce, "\t%lu packet%s with ECN CE bit set\n"); + p(tcps_ecn_ect0, "\t%lu packet%s with ECN ECT(0) bit set\n"); + p(tcps_ecn_ect1, "\t%lu packet%s with ECN ECT(1) bit set\n"); + p(tcps_ecn_shs, "\t%lu successful ECN handshake%s\n"); + p(tcps_ecn_rcwnd, "\t%lu time%s ECN reduced the congestion window\n"); +#undef p +#undef p1a +#undef p2 +#undef p2a +#undef p3 +} + +/* + * Dump UDP statistics structure. + */ +void +udp_stats(u_long off, const char *name, int af1 __unused, int proto __unused) +{ + struct udpstat udpstat, zerostat; + size_t len = sizeof udpstat; + u_long delivered; + +#ifdef INET6 + if (udp_done != 0) + return; + else + udp_done = 1; +#endif + + if (live) { + if (zflag) + memset(&zerostat, 0, len); + if (sysctlbyname("net.inet.udp.stats", &udpstat, &len, + zflag ? &zerostat : NULL, zflag ? len : 0) < 0) { + warn("sysctl: net.inet.udp.stats"); + return; + } + } else + kread(off, &udpstat, len); + + printf("%s:\n", name); +#define p(f, m) if (udpstat.f || sflag <= 1) \ + printf(m, udpstat.f, plural(udpstat.f)) +#define p1a(f, m) if (udpstat.f || sflag <= 1) \ + printf(m, udpstat.f) + p(udps_ipackets, "\t%lu datagram%s received\n"); + p1a(udps_hdrops, "\t%lu with incomplete header\n"); + p1a(udps_badlen, "\t%lu with bad data length field\n"); + p1a(udps_badsum, "\t%lu with bad checksum\n"); + p1a(udps_nosum, "\t%lu with no checksum\n"); + p1a(udps_noport, "\t%lu dropped due to no socket\n"); + p(udps_noportbcast, + "\t%lu broadcast/multicast datagram%s undelivered\n"); + p1a(udps_fullsock, "\t%lu dropped due to full socket buffers\n"); + p1a(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"); + /* the next statistic is cumulative in udps_noportbcast */ + p(udps_filtermcast, + "\t%lu time%s multicast source filter matched\n"); +#undef p +#undef p1a +} + +/* + * Dump CARP statistics structure. + */ +void +carp_stats(u_long off, const char *name, int af1 __unused, int proto __unused) +{ + struct carpstats carpstat, zerostat; + size_t len = sizeof(struct carpstats); + + if (live) { + if (zflag) + memset(&zerostat, 0, len); + if (sysctlbyname("net.inet.carp.stats", &carpstat, &len, + zflag ? &zerostat : NULL, zflag ? len : 0) < 0) { + if (errno != ENOENT) + warn("sysctl: net.inet.carp.stats"); + return; + } + } else { + if (off == 0) + return; + kread(off, &carpstat, len); + } + + printf("%s:\n", name); + +#define p(f, m) if (carpstat.f || sflag <= 1) \ + printf(m, (uintmax_t)carpstat.f, plural(carpstat.f)) +#define p2(f, m) if (carpstat.f || sflag <= 1) \ + printf(m, (uintmax_t)carpstat.f) + + p(carps_ipackets, "\t%ju packet%s received (IPv4)\n"); + p(carps_ipackets6, "\t%ju packet%s received (IPv6)\n"); + p(carps_badttl, "\t\t%ju packet%s discarded for wrong TTL\n"); + p(carps_hdrops, "\t\t%ju packet%s shorter than header\n"); + p(carps_badsum, "\t\t%ju discarded for bad checksum%s\n"); + p(carps_badver, "\t\t%ju discarded packet%s with a bad version\n"); + p2(carps_badlen, "\t\t%ju discarded because packet too short\n"); + p2(carps_badauth, "\t\t%ju discarded for bad authentication\n"); + p2(carps_badvhid, "\t\t%ju discarded for bad vhid\n"); + p2(carps_badaddrs, "\t\t%ju discarded because of a bad address list\n"); + p(carps_opackets, "\t%ju packet%s sent (IPv4)\n"); + p(carps_opackets6, "\t%ju packet%s sent (IPv6)\n"); + p2(carps_onomem, "\t\t%ju send failed due to mbuf memory error\n"); +#if notyet + p(carps_ostates, "\t\t%s state update%s sent\n"); +#endif +#undef p +#undef p2 +} + +/* + * Dump IP statistics structure. + */ +void +ip_stats(u_long off, const char *name, int af1 __unused, int proto __unused) +{ + struct ipstat ipstat, zerostat; + size_t len = sizeof ipstat; + + if (live) { + if (zflag) + memset(&zerostat, 0, len); + if (sysctlbyname("net.inet.ip.stats", &ipstat, &len, + zflag ? &zerostat : NULL, zflag ? len : 0) < 0) { + warn("sysctl: net.inet.ip.stats"); + return; + } + } else + kread(off, &ipstat, len); + + printf("%s:\n", name); + +#define p(f, m) if (ipstat.f || sflag <= 1) \ + printf(m, ipstat.f, plural(ipstat.f)) +#define p1a(f, m) if (ipstat.f || sflag <= 1) \ + printf(m, ipstat.f) + + p(ips_total, "\t%lu total packet%s received\n"); + p(ips_badsum, "\t%lu bad header checksum%s\n"); + p1a(ips_toosmall, "\t%lu with size smaller than minimum\n"); + p1a(ips_tooshort, "\t%lu with data size < data length\n"); + p1a(ips_toolong, "\t%lu with ip length > max ip packet size\n"); + p1a(ips_badhlen, "\t%lu with header length < data size\n"); + p1a(ips_badlen, "\t%lu with data length < header length\n"); + p1a(ips_badoptions, "\t%lu with bad options\n"); + p1a(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"); + p(ips_fastforward, " (%lu packet%s fast forwarded)"); + if (ipstat.ips_forward || sflag <= 1) + putchar('\n'); + p(ips_cantforward, "\t%lu packet%s not forwardable\n"); + p(ips_notmember, + "\t%lu packet%s received for unknown multicast group\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"); + p(ips_nogif, "\t%lu tunneling packet%s that can't find gif\n"); + p(ips_badaddr, "\t%lu datagram%s with bad address in header\n"); +#undef p +#undef p1a +} + +/* + * Dump ARP statistics structure. + */ +void +arp_stats(u_long off, const char *name, int af1 __unused, int proto __unused) +{ + struct arpstat arpstat, zerostat; + size_t len = sizeof(arpstat); + + if (live) { + if (zflag) + memset(&zerostat, 0, len); + if (sysctlbyname("net.link.ether.arp.stats", &arpstat, &len, + zflag ? &zerostat : NULL, zflag ? len : 0) < 0) { + warn("sysctl: net.link.ether.arp.stats"); + return; + } + } else + kread(off, &arpstat, len); + + printf("%s:\n", name); + +#define p(f, m) if (arpstat.f || sflag <= 1) \ + printf(m, arpstat.f, plural(arpstat.f)) +#define p2(f, m) if (arpstat.f || sflag <= 1) \ + printf(m, arpstat.f, pluralies(arpstat.f)) + + p(txrequests, "\t%lu ARP request%s sent\n"); + p2(txreplies, "\t%lu ARP repl%s sent\n"); + p(rxrequests, "\t%lu ARP request%s received\n"); + p2(rxreplies, "\t%lu ARP repl%s received\n"); + p(received, "\t%lu ARP packet%s received\n"); + p(dropped, "\t%lu total packet%s dropped due to no ARP entry\n"); + p(timeouts, "\t%lu ARP entry%s timed out\n"); + p(dupips, "\t%lu Duplicate IP%s seen\n"); +#undef p +#undef p2 +} + + + +static const char *icmpnames[ICMP_MAXTYPE + 1] = { + "echo reply", /* RFC 792 */ + "#1", + "#2", + "destination unreachable", /* RFC 792 */ + "source quench", /* RFC 792 */ + "routing redirect", /* RFC 792 */ + "#6", + "#7", + "echo", /* RFC 792 */ + "router advertisement", /* RFC 1256 */ + "router solicitation", /* RFC 1256 */ + "time exceeded", /* RFC 792 */ + "parameter problem", /* RFC 792 */ + "time stamp", /* RFC 792 */ + "time stamp reply", /* RFC 792 */ + "information request", /* RFC 792 */ + "information request reply", /* RFC 792 */ + "address mask request", /* RFC 950 */ + "address mask reply", /* RFC 950 */ + "#19", + "#20", + "#21", + "#22", + "#23", + "#24", + "#25", + "#26", + "#27", + "#28", + "#29", + "icmp traceroute", /* RFC 1393 */ + "datagram conversion error", /* RFC 1475 */ + "mobile host redirect", + "IPv6 where-are-you", + "IPv6 i-am-here", + "mobile registration req", + "mobile registration reply", + "domain name request", /* RFC 1788 */ + "domain name reply", /* RFC 1788 */ + "icmp SKIP", + "icmp photuris", /* RFC 2521 */ +}; + +/* + * Dump ICMP statistics. + */ +void +icmp_stats(u_long off, const char *name, int af1 __unused, int proto __unused) +{ + struct icmpstat icmpstat, zerostat; + int i, first; + size_t len; + + len = sizeof icmpstat; + if (live) { + if (zflag) + memset(&zerostat, 0, len); + if (sysctlbyname("net.inet.icmp.stats", &icmpstat, &len, + zflag ? &zerostat : NULL, zflag ? len : 0) < 0) { + warn("sysctl: net.inet.icmp.stats"); + return; + } + } else + kread(off, &icmpstat, len); + + printf("%s:\n", name); + +#define p(f, m) if (icmpstat.f || sflag <= 1) \ + printf(m, icmpstat.f, plural(icmpstat.f)) +#define p1a(f, m) if (icmpstat.f || sflag <= 1) \ + printf(m, icmpstat.f) +#define p2(f, m) if (icmpstat.f || sflag <= 1) \ + printf(m, icmpstat.f, plurales(icmpstat.f)) + + p(icps_error, "\t%lu call%s to icmp_error\n"); + p(icps_oldicmp, + "\t%lu error%s not generated in response to an icmp message\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; + } + if (icmpnames[i] != NULL) + printf("\t\t%s: %lu\n", icmpnames[i], + icmpstat.icps_outhist[i]); + else + printf("\t\tunknown ICMP #%d: %lu\n", i, + icmpstat.icps_outhist[i]); + } + p(icps_badcode, "\t%lu message%s with bad code fields\n"); + p(icps_tooshort, "\t%lu message%s less than the minimum length\n"); + p(icps_checksum, "\t%lu message%s with bad checksum\n"); + p(icps_badlen, "\t%lu message%s with bad length\n"); + p1a(icps_bmcastecho, "\t%lu multicast echo requests ignored\n"); + p1a(icps_bmcasttstamp, "\t%lu multicast timestamp requests ignored\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; + } + if (icmpnames[i] != NULL) + printf("\t\t%s: %lu\n", icmpnames[i], + icmpstat.icps_inhist[i]); + else + printf("\t\tunknown ICMP #%d: %lu\n", i, + icmpstat.icps_inhist[i]); + } + p(icps_reflect, "\t%lu message response%s generated\n"); + p2(icps_badaddr, "\t%lu invalid return address%s\n"); + p(icps_noroute, "\t%lu no return route%s\n"); +#undef p +#undef p1a +#undef p2 + if (live) { + len = sizeof i; + if (sysctlbyname("net.inet.icmp.maskrepl", &i, &len, NULL, 0) < + 0) + return; + printf("\tICMP address mask responses are %sabled\n", + i ? "en" : "dis"); + } +} + +#ifndef BURN_BRIDGES +/* + * Dump IGMP statistics structure (pre 8.x kernel). + */ +static void +igmp_stats_live_old(u_long off, const char *name) +{ + struct oigmpstat oigmpstat, zerostat; + size_t len = sizeof(oigmpstat); + + if (zflag) + memset(&zerostat, 0, len); + if (sysctlbyname("net.inet.igmp.stats", &oigmpstat, &len, + zflag ? &zerostat : NULL, zflag ? len : 0) < 0) { + warn("sysctl: net.inet.igmp.stats"); + return; + } + + printf("%s:\n", name); + +#define p(f, m) if (oigmpstat.f || sflag <= 1) \ + printf(m, oigmpstat.f, plural(oigmpstat.f)) +#define py(f, m) if (oigmpstat.f || sflag <= 1) \ + printf(m, oigmpstat.f, oigmpstat.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 +} +#endif /* !BURN_BRIDGES */ + +/* + * Dump IGMP statistics structure. + */ +void +igmp_stats(u_long off, const char *name, int af1 __unused, int proto __unused) +{ + struct igmpstat igmpstat, zerostat; + size_t len; + +#ifndef BURN_BRIDGES + if (live) { + /* + * Detect if we are being run against a pre-IGMPv3 kernel. + * We cannot do this for a core file as the legacy + * struct igmpstat has no size field, nor does it + * export it in any readily-available symbols. + */ + len = 0; + if (sysctlbyname("net.inet.igmp.stats", NULL, &len, NULL, + 0) < 0) { + warn("sysctl: net.inet.igmp.stats"); + return; + } + if (len < sizeof(igmpstat)) { + igmp_stats_live_old(off, name); + return; + } + } +#endif /* !BURN_BRIDGES */ + + len = sizeof(igmpstat); + if (live) { + if (zflag) + memset(&zerostat, 0, len); + if (sysctlbyname("net.inet.igmp.stats", &igmpstat, &len, + zflag ? &zerostat : NULL, zflag ? len : 0) < 0) { + warn("sysctl: net.inet.igmp.stats"); + return; + } + } else { + len = sizeof(igmpstat); + kread(off, &igmpstat, len); + } + + if (igmpstat.igps_version != IGPS_VERSION_3) { + warnx("%s: version mismatch (%d != %d)", __func__, + igmpstat.igps_version, IGPS_VERSION_3); + } + if (igmpstat.igps_len != IGPS_VERSION3_LEN) { + warnx("%s: size mismatch (%d != %d)", __func__, + igmpstat.igps_len, IGPS_VERSION3_LEN); + } + + printf("%s:\n", name); + +#define p64(f, m) if (igmpstat.f || sflag <= 1) \ + printf(m, (uintmax_t) igmpstat.f, plural(igmpstat.f)) +#define py64(f, m) if (igmpstat.f || sflag <= 1) \ + printf(m, (uintmax_t) igmpstat.f, pluralies(igmpstat.f)) + p64(igps_rcv_total, "\t%ju message%s received\n"); + p64(igps_rcv_tooshort, "\t%ju message%s received with too few bytes\n"); + p64(igps_rcv_badttl, "\t%ju message%s received with wrong TTL\n"); + p64(igps_rcv_badsum, "\t%ju message%s received with bad checksum\n"); + py64(igps_rcv_v1v2_queries, "\t%ju V1/V2 membership quer%s received\n"); + py64(igps_rcv_v3_queries, "\t%ju V3 membership quer%s received\n"); + py64(igps_rcv_badqueries, + "\t%ju membership quer%s received with invalid field(s)\n"); + py64(igps_rcv_gen_queries, "\t%ju general quer%s received\n"); + py64(igps_rcv_group_queries, "\t%ju group quer%s received\n"); + py64(igps_rcv_gsr_queries, "\t%ju group-source quer%s received\n"); + py64(igps_drop_gsr_queries, "\t%ju group-source quer%s dropped\n"); + p64(igps_rcv_reports, "\t%ju membership report%s received\n"); + p64(igps_rcv_badreports, + "\t%ju membership report%s received with invalid field(s)\n"); + p64(igps_rcv_ourreports, +"\t%ju membership report%s received for groups to which we belong\n"); + p64(igps_rcv_nora, "\t%ju V3 report%s received without Router Alert\n"); + p64(igps_snd_reports, "\t%ju membership report%s sent\n"); +#undef p64 +#undef py64 +} + +/* + * Dump PIM statistics structure. + */ +void +pim_stats(u_long off __unused, const char *name, int af1 __unused, + int proto __unused) +{ + struct pimstat pimstat, zerostat; + size_t len = sizeof pimstat; + + if (live) { + if (zflag) + memset(&zerostat, 0, len); + if (sysctlbyname("net.inet.pim.stats", &pimstat, &len, + zflag ? &zerostat : NULL, zflag ? len : 0) < 0) { + if (errno != ENOENT) + warn("sysctl: net.inet.pim.stats"); + return; + } + } else { + if (off == 0) + return; + kread(off, &pimstat, len); + } + + printf("%s:\n", name); + +#define p(f, m) if (pimstat.f || sflag <= 1) \ + printf(m, (uintmax_t)pimstat.f, plural(pimstat.f)) +#define py(f, m) if (pimstat.f || sflag <= 1) \ + printf(m, (uintmax_t)pimstat.f, pimstat.f != 1 ? "ies" : "y") + p(pims_rcv_total_msgs, "\t%ju message%s received\n"); + p(pims_rcv_total_bytes, "\t%ju byte%s received\n"); + p(pims_rcv_tooshort, "\t%ju message%s received with too few bytes\n"); + p(pims_rcv_badsum, "\t%ju message%s received with bad checksum\n"); + p(pims_rcv_badversion, "\t%ju message%s received with bad version\n"); + p(pims_rcv_registers_msgs, "\t%ju data register message%s received\n"); + p(pims_rcv_registers_bytes, "\t%ju data register byte%s received\n"); + p(pims_rcv_registers_wrongiif, + "\t%ju data register message%s received on wrong iif\n"); + p(pims_rcv_badregisters, "\t%ju bad register%s received\n"); + p(pims_snd_registers_msgs, "\t%ju data register message%s sent\n"); + p(pims_snd_registers_bytes, "\t%ju data register byte%s sent\n"); +#undef p +#undef py +} + +/* + * Pretty print an Internet address (net address + port). + */ +void +inetprint(struct in_addr *in, int port, const char *proto, int num_port) +{ + struct servent *sp = 0; + char line[80], *cp; + int width; + + if (Wflag) + sprintf(line, "%s.", inetname(in)); + else + sprintf(line, "%.*s.", (Aflag && !num_port) ? 12 : 16, inetname(in)); + cp = index(line, '\0'); + if (!num_port && 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 && !Wflag) ? 18 : 22; + if (Wflag) + printf("%-*s ", width, line); + else + printf("%-*.*s ", width, width, line); +} + +/* + * Construct an Internet address representation. + * If numeric_addr has been supplied, give + * numeric value, otherwise try for symbolic name. + */ +char * +inetname(struct in_addr *inp) +{ + char *cp; + static char line[MAXHOSTNAMELEN]; + struct hostent *hp; + struct netent *np; + + cp = 0; + if (!numeric_addr && 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, strlen(cp)); + } + } + } + if (inp->s_addr == INADDR_ANY) + strcpy(line, "*"); + else if (cp) { + strlcpy(line, cp, sizeof(line)); + } else { + inp->s_addr = ntohl(inp->s_addr); +#define C(x) ((u_int)((x) & 0xff)) + sprintf(line, "%u.%u.%u.%u", C(inp->s_addr >> 24), + C(inp->s_addr >> 16), C(inp->s_addr >> 8), C(inp->s_addr)); + } + return (line); +} |