/*

 * Copyright (c) 1995 Danny Gasparovski.

 * Portions copyright (c) 2000 Kelly Price.

 *

 * Please read the file COPYRIGHT for the

 * terms and conditions of the copyright.

 */

#include <slirp.h>

FILE *dfd = NULL;

#ifdef DEBUG

int dostats = 1;

#else

int dostats = 0;

#endif

int slirp_debug = 0;

/* Carry over one item from main.c so that the tty's restored.

 * Only done when the tty being used is /dev/tty --RedWolf */

#ifndef CONFIG_QEMU

extern struct termios slirp_tty_settings;

extern int slirp_tty_restore;

void

debug_init(file, dbg)

	char *file;

	int dbg;

{

	/* Close the old debugging file */

	if (dfd)

	   fclose(dfd);

	dfd = fopen(file,"w");

	if (dfd != NULL) {

#if 0

		fprintf(dfd,"Slirp %s - Debugging Started.\n", SLIRP_VERSION);

#endif

		fprintf(dfd,"Debugging Started level %i.\r\n",dbg);

		fflush(dfd);

		slirp_debug = dbg;

	} else {

		lprint("Error: Debugging file \"%s\" could not be opened: %s\r\n",

			file, strerror(errno));

	}

}

/*

 * Dump a packet in the same format as tcpdump -x

 */

#ifdef DEBUG

void

dump_packet(dat, n)

	void *dat;

	int n;

{

	u_char *pptr = (u_char *)dat;

	int j,k;

	n /= 16;

	n++;

	DEBUG_MISC((dfd, "PACKET DUMPED: \n"));

	for(j = 0; j < n; j++) {

		for(k = 0; k < 6; k++)

			DEBUG_MISC((dfd, "%02x ", *pptr++));

		DEBUG_MISC((dfd, "\n"));

		fflush(dfd);

	}

}

#endif

#endif

#ifdef LOG_ENABLED

#if 0

/*

 * Statistic routines

 *

 * These will print statistics to the screen, the debug file (dfd), or

 * a buffer, depending on "type", so that the stats can be sent over

 * the link as well.

 */

static void

ttystats(ttyp)

	struct ttys *ttyp;

{

	struct slirp_ifstats *is = &ttyp->ifstats;

	char buff[512];

	lprint(" \r\n");

	if (IF_COMP & IF_COMPRESS)

	   strcpy(buff, "on");

	else if (IF_COMP & IF_NOCOMPRESS)

	   strcpy(buff, "off");

	else

	   strcpy(buff, "off (for now)");

	lprint("Unit %d:\r\n", ttyp->unit);

	lprint("  using %s encapsulation (VJ compression is %s)\r\n", (

#ifdef USE_PPP

	       ttyp->proto==PROTO_PPP?"PPP":

#endif

	       "SLIP"), buff);

	lprint("  %d baudrate\r\n", ttyp->baud);

	lprint("  interface is %s\r\n", ttyp->up?"up":"down");

	lprint("  using fd %d, guardian pid is %d\r\n", ttyp->fd, ttyp->pid);

#ifndef FULL_BOLT

	lprint("  towrite is %d bytes\r\n", ttyp->towrite);

#endif

	if (ttyp->zeros)

	   lprint("  %d zeros have been typed\r\n", ttyp->zeros);

	else if (ttyp->ones)

	   lprint("  %d ones have been typed\r\n", ttyp->ones);

	lprint("Interface stats:\r\n");

	lprint("  %6d output packets sent (%d bytes)\r\n", is->out_pkts, is->out_bytes);

	lprint("  %6d output packets dropped (%d bytes)\r\n", is->out_errpkts, is->out_errbytes);

	lprint("  %6d input packets received (%d bytes)\r\n", is->in_pkts, is->in_bytes);

	lprint("  %6d input packets dropped (%d bytes)\r\n", is->in_errpkts, is->in_errbytes);

	lprint("  %6d bad input packets\r\n", is->in_mbad);

}

static void

allttystats(void)

{

	struct ttys *ttyp;

	for (ttyp = ttys; ttyp; ttyp = ttyp->next)

	   ttystats(ttyp);

}

#endif

static void

ipstats(void)

{

	lprint(" \r\n");

	lprint("IP stats:\r\n");

	lprint("  %6d total packets received (%d were unaligned)\r\n",

			ipstat.ips_total, ipstat.ips_unaligned);

	lprint("  %6d with incorrect version\r\n", ipstat.ips_badvers);

	lprint("  %6d with bad header checksum\r\n", ipstat.ips_badsum);

	lprint("  %6d with length too short (len < sizeof(iphdr))\r\n", ipstat.ips_tooshort);

	lprint("  %6d with length too small (len < ip->len)\r\n", ipstat.ips_toosmall);

	lprint("  %6d with bad header length\r\n", ipstat.ips_badhlen);

	lprint("  %6d with bad packet length\r\n", ipstat.ips_badlen);

	lprint("  %6d fragments received\r\n", ipstat.ips_fragments);

	lprint("  %6d fragments dropped\r\n", ipstat.ips_fragdropped);

	lprint("  %6d fragments timed out\r\n", ipstat.ips_fragtimeout);

	lprint("  %6d packets reassembled ok\r\n", ipstat.ips_reassembled);

	lprint("  %6d outgoing packets fragmented\r\n", ipstat.ips_fragmented);

	lprint("  %6d total outgoing fragments\r\n", ipstat.ips_ofragments);

	lprint("  %6d with bad protocol field\r\n", ipstat.ips_noproto);

	lprint("  %6d total packets delivered\r\n", ipstat.ips_delivered);

}

#ifndef CONFIG_QEMU

static void

vjstats(void)

{

	lprint(" \r\n");

	lprint("VJ compression stats:\r\n");

	lprint("  %6d outbound packets (%d compressed)\r\n",

	       comp_s.sls_packets, comp_s.sls_compressed);

	lprint("  %6d searches for connection stats (%d misses)\r\n",

	       comp_s.sls_searches, comp_s.sls_misses);

	lprint("  %6d inbound uncompressed packets\r\n", comp_s.sls_uncompressedin);

	lprint("  %6d inbound compressed packets\r\n", comp_s.sls_compressedin);

	lprint("  %6d inbound unknown type packets\r\n", comp_s.sls_errorin);

	lprint("  %6d inbound packets tossed due to error\r\n", comp_s.sls_tossed);

}

#endif

static void

tcpstats(void)

{

	lprint(" \r\n");

	lprint("TCP stats:\r\n");

	lprint("  %6d packets sent\r\n", tcpstat.tcps_sndtotal);

	lprint("          %6d data packets (%d bytes)\r\n",

			tcpstat.tcps_sndpack, tcpstat.tcps_sndbyte);

	lprint("          %6d data packets retransmitted (%d bytes)\r\n",

			tcpstat.tcps_sndrexmitpack, tcpstat.tcps_sndrexmitbyte);

	lprint("          %6d ack-only packets (%d delayed)\r\n",

			tcpstat.tcps_sndacks, tcpstat.tcps_delack);

	lprint("          %6d URG only packets\r\n", tcpstat.tcps_sndurg);

	lprint("          %6d window probe packets\r\n", tcpstat.tcps_sndprobe);

	lprint("          %6d window update packets\r\n", tcpstat.tcps_sndwinup);

	lprint("          %6d control (SYN/FIN/RST) packets\r\n", tcpstat.tcps_sndctrl);

	lprint("          %6d times tcp_output did nothing\r\n", tcpstat.tcps_didnuttin);

	lprint("  %6d packets received\r\n", tcpstat.tcps_rcvtotal);

	lprint("          %6d acks (for %d bytes)\r\n",

			tcpstat.tcps_rcvackpack, tcpstat.tcps_rcvackbyte);

	lprint("          %6d duplicate acks\r\n", tcpstat.tcps_rcvdupack);

	lprint("          %6d acks for unsent data\r\n", tcpstat.tcps_rcvacktoomuch);

	lprint("          %6d packets received in sequence (%d bytes)\r\n",

			tcpstat.tcps_rcvpack, tcpstat.tcps_rcvbyte);

        lprint("          %6d completely duplicate packets (%d bytes)\r\n",

			tcpstat.tcps_rcvduppack, tcpstat.tcps_rcvdupbyte);

	lprint("          %6d packets with some duplicate data (%d bytes duped)\r\n",

			tcpstat.tcps_rcvpartduppack, tcpstat.tcps_rcvpartdupbyte);

	lprint("          %6d out-of-order packets (%d bytes)\r\n",

			tcpstat.tcps_rcvoopack, tcpstat.tcps_rcvoobyte);

	lprint("          %6d packets of data after window (%d bytes)\r\n",

			tcpstat.tcps_rcvpackafterwin, tcpstat.tcps_rcvbyteafterwin);

	lprint("          %6d window probes\r\n", tcpstat.tcps_rcvwinprobe);

	lprint("          %6d window update packets\r\n", tcpstat.tcps_rcvwinupd);

	lprint("          %6d packets received after close\r\n", tcpstat.tcps_rcvafterclose);

	lprint("          %6d discarded for bad checksums\r\n", tcpstat.tcps_rcvbadsum);

	lprint("          %6d discarded for bad header offset fields\r\n",

			tcpstat.tcps_rcvbadoff);

	lprint("  %6d connection requests\r\n", tcpstat.tcps_connattempt);

	lprint("  %6d connection accepts\r\n", tcpstat.tcps_accepts);

	lprint("  %6d connections established (including accepts)\r\n", tcpstat.tcps_connects);

	lprint("  %6d connections closed (including %d drop)\r\n",

			tcpstat.tcps_closed, tcpstat.tcps_drops);

	lprint("  %6d embryonic connections dropped\r\n", tcpstat.tcps_conndrops);

	lprint("  %6d segments we tried to get rtt (%d succeeded)\r\n",

			tcpstat.tcps_segstimed, tcpstat.tcps_rttupdated);

	lprint("  %6d retransmit timeouts\r\n", tcpstat.tcps_rexmttimeo);

	lprint("          %6d connections dropped by rxmt timeout\r\n",

			tcpstat.tcps_timeoutdrop);

	lprint("  %6d persist timeouts\r\n", tcpstat.tcps_persisttimeo);

	lprint("  %6d keepalive timeouts\r\n", tcpstat.tcps_keeptimeo);

	lprint("          %6d keepalive probes sent\r\n", tcpstat.tcps_keepprobe);

	lprint("          %6d connections dropped by keepalive\r\n", tcpstat.tcps_keepdrops);

	lprint("  %6d correct ACK header predictions\r\n", tcpstat.tcps_predack);

	lprint("  %6d correct data packet header predictions\n", tcpstat.tcps_preddat);

	lprint("  %6d TCP cache misses\r\n", tcpstat.tcps_socachemiss);

/*	lprint("    Packets received too short:		%d\r\n", tcpstat.tcps_rcvshort); */

/*	lprint("    Segments dropped due to PAWS:	%d\r\n", tcpstat.tcps_pawsdrop); */

}

static void

udpstats(void)

{

        lprint(" \r\n");

	lprint("UDP stats:\r\n");

	lprint("  %6d datagrams received\r\n", udpstat.udps_ipackets);

	lprint("  %6d with packets shorter than header\r\n", udpstat.udps_hdrops);

	lprint("  %6d with bad checksums\r\n", udpstat.udps_badsum);

	lprint("  %6d with data length larger than packet\r\n", udpstat.udps_badlen);

	lprint("  %6d UDP socket cache misses\r\n", udpstat.udpps_pcbcachemiss);

	lprint("  %6d datagrams sent\r\n", udpstat.udps_opackets);

}

static void

icmpstats(void)

{

	lprint(" \r\n");

	lprint("ICMP stats:\r\n");

	lprint("  %6d ICMP packets received\r\n", icmpstat.icps_received);

	lprint("  %6d were too short\r\n", icmpstat.icps_tooshort);

	lprint("  %6d with bad checksums\r\n", icmpstat.icps_checksum);

	lprint("  %6d with type not supported\r\n", icmpstat.icps_notsupp);

	lprint("  %6d with bad type feilds\r\n", icmpstat.icps_badtype);

	lprint("  %6d ICMP packets sent in reply\r\n", icmpstat.icps_reflect);

}

static void

mbufstats(void)

{

	struct mbuf *m;

	int i;

        lprint(" \r\n");

	lprint("Mbuf stats:\r\n");

	lprint("  %6d mbufs allocated (%d max)\r\n", mbuf_alloced, mbuf_max);

	i = 0;

	for (m = m_freelist.m_next; m != &m_freelist; m = m->m_next)

		i++;

	lprint("  %6d mbufs on free list\r\n",  i);

	i = 0;

	for (m = m_usedlist.m_next; m != &m_usedlist; m = m->m_next)

		i++;

	lprint("  %6d mbufs on used list\r\n",  i);

        lprint("  %6d mbufs queued as packets\r\n\r\n", if_queued);

}

static void

sockstats(void)

{

	char buff[256];

	int n;

	struct socket *so;

        lprint(" \r\n");

	lprint(

	   "Proto[state]     Sock     Local Address, Port  Remote Address, Port RecvQ SendQ\r\n");

	for (so = tcb.so_next; so != &tcb; so = so->so_next) {

		n = sprintf(buff, "tcp[%s]", so->so_tcpcb?tcpstates[so->so_tcpcb->t_state]:"NONE");

		while (n < 17)

		   buff[n++] = ' ';

		buff[17] = 0;

		lprint("%s %3d   %15s %5d ",

				buff, so->s,

				inet_ntoa(so->so_laddr), ntohs(so->so_lport));

		lprint("%15s %5d %5d %5d\r\n",

				inet_ntoa(so->so_faddr), ntohs(so->so_fport),

				so->so_rcv.sb_cc, so->so_snd.sb_cc);

	}

	for (so = udb.so_next; so != &udb; so = so->so_next) {

		n = sprintf(buff, "udp[%d sec]", (so->so_expire - curtime) / 1000);

		while (n < 17)

		   buff[n++] = ' ';

		buff[17] = 0;

		lprint("%s %3d  %15s %5d  ",

				buff, so->s,

				inet_ntoa(so->so_laddr), ntohs(so->so_lport));

		lprint("%15s %5d %5d %5d\r\n",

				inet_ntoa(so->so_faddr), ntohs(so->so_fport),

				so->so_rcv.sb_cc, so->so_snd.sb_cc);

	}

}

#endif

#ifndef CONFIG_QEMU

void

slirp_exit(exit_status)

	int exit_status;

{

	struct ttys *ttyp;

	DEBUG_CALL("slirp_exit");

	DEBUG_ARG("exit_status = %d", exit_status);

	if (dostats) {

		lprint_print = (int (*) _P((void *, const char *, va_list)))vfprintf;

		if (!dfd)

		   debug_init("slirp_stats", 0xf);

		lprint_arg = (char **)&dfd;

		ipstats();

		tcpstats();

		udpstats();

		icmpstats();

		mbufstats();

		sockstats();

		allttystats();

		vjstats();

	}

	for (ttyp = ttys; ttyp; ttyp = ttyp->next)

	   tty_detached(ttyp, 1);

	if (slirp_forked) {

		/* Menendez time */

		if (kill(getppid(), SIGQUIT) < 0)

			lprint("Couldn't kill parent process %ld!\n",

			    (long) getppid());

    	}

	/* Restore the terminal if we gotta */

	if(slirp_tty_restore)

	  tcsetattr(0,TCSANOW, &slirp_tty_settings);  /* NOW DAMMIT! */

	exit(exit_status);

}

#endif

void

slirp_stats(void)

{

#ifdef LOG_ENABLED

    ipstats();

    tcpstats();

    udpstats();

    icmpstats();

    mbufstats();

    sockstats();

#else

    lprint("SLIRP statistics code not compiled.\n");

#endif

}