1 /*
2 * Copyright (c) 1995 Danny Gasparovski.
3 * Portions copyright (c) 2000 Kelly Price.
4 *
5 * Please read the file COPYRIGHT for the
6 * terms and conditions of the copyright.
7 */
8
9 #include "slirp.h"
10
11 FILE *dfd = NULL;
12 #ifdef SLIRP_DEBUG
13 int dostats = 1;
14 #else
15 int dostats = 0;
16 #endif
17 int slirp_debug = 0;
18
19 extern char *strerror _P((int));
20
21 /* Carry over one item from main.c so that the tty's restored.
22 * Only done when the tty being used is /dev/tty --RedWolf */
23 extern struct termios slirp_tty_settings;
24 extern int slirp_tty_restore;
25
26
27 void
debug_init(file,dbg)28 debug_init(file, dbg)
29 char *file;
30 int dbg;
31 {
32 /* Close the old debugging file */
33 if (dfd)
34 fclose(dfd);
35
36 dfd = fopen(file,"w");
37 if (dfd != NULL) {
38 #if 1
39 fprintf(dfd,"Slirp %s - Debugging Started.\n", SLIRP_VERSION);
40 #endif
41 fprintf(dfd,"Debugging Started level %i.\r\n",dbg);
42 fflush(dfd);
43 slirp_debug = dbg;
44 } else {
45 lprint("Error: Debugging file \"%s\" could not be opened: %s\r\n",
46 file, strerror(errno));
47 }
48 }
49
50 /*
51 * Dump a packet in the same format as tcpdump -x
52 */
53 #ifdef SLIRP_DEBUG
54 void
dump_packet(dat,n)55 dump_packet(dat, n)
56 void *dat;
57 int n;
58 {
59 u_char *pptr = (u_char *)dat;
60 int j,k;
61
62 n /= 16;
63 n++;
64 DEBUG_MISC((dfd, "PACKET DUMPED: \n"));
65 for(j = 0; j < n; j++) {
66 for(k = 0; k < 6; k++)
67 DEBUG_MISC((dfd, "%02x ", *pptr++));
68 DEBUG_MISC((dfd, "\n"));
69 fflush(dfd);
70 }
71 }
72 #endif
73
74 #if 0
75 /*
76 * Statistic routines
77 *
78 * These will print statistics to the screen, the debug file (dfd), or
79 * a buffer, depending on "type", so that the stats can be sent over
80 * the link as well.
81 */
82
83 void
84 ttystats(ttyp)
85 struct ttys *ttyp;
86 {
87 struct slirp_ifstats *is = &ttyp->ifstats;
88 char buff[512];
89
90 lprint(" \r\n");
91
92 if (if_comp & IF_COMPRESS)
93 strcpy(buff, "on");
94 else if (if_comp & IF_NOCOMPRESS)
95 strcpy(buff, "off");
96 else
97 strcpy(buff, "off (for now)");
98 lprint("Unit %d:\r\n", ttyp->unit);
99 lprint(" using %s encapsulation (VJ compression is %s)\r\n", (
100 #ifdef USE_PPP
101 ttyp->proto==PROTO_PPP?"PPP":
102 #endif
103 "SLIP"), buff);
104 lprint(" %d baudrate\r\n", ttyp->baud);
105 lprint(" interface is %s\r\n", ttyp->up?"up":"down");
106 lprint(" using fd %d, guardian pid is %d\r\n", ttyp->fd, ttyp->pid);
107 #ifndef FULL_BOLT
108 lprint(" towrite is %d bytes\r\n", ttyp->towrite);
109 #endif
110 if (ttyp->zeros)
111 lprint(" %d zeros have been typed\r\n", ttyp->zeros);
112 else if (ttyp->ones)
113 lprint(" %d ones have been typed\r\n", ttyp->ones);
114 lprint("Interface stats:\r\n");
115 lprint(" %6d output packets sent (%d bytes)\r\n", is->out_pkts, is->out_bytes);
116 lprint(" %6d output packets dropped (%d bytes)\r\n", is->out_errpkts, is->out_errbytes);
117 lprint(" %6d input packets received (%d bytes)\r\n", is->in_pkts, is->in_bytes);
118 lprint(" %6d input packets dropped (%d bytes)\r\n", is->in_errpkts, is->in_errbytes);
119 lprint(" %6d bad input packets\r\n", is->in_mbad);
120 }
121
122 void
123 allttystats()
124 {
125 struct ttys *ttyp;
126
127 for (ttyp = ttys; ttyp; ttyp = ttyp->next)
128 ttystats(ttyp);
129 }
130 #endif
131
132 void
ipstats()133 ipstats()
134 {
135 lprint(" \r\n");
136
137 lprint("IP stats:\r\n");
138 lprint(" %6d total packets received (%d were unaligned)\r\n",
139 ipstat.ips_total, ipstat.ips_unaligned);
140 lprint(" %6d with incorrect version\r\n", ipstat.ips_badvers);
141 lprint(" %6d with bad header checksum\r\n", ipstat.ips_badsum);
142 lprint(" %6d with length too short (len < sizeof(iphdr))\r\n", ipstat.ips_tooshort);
143 lprint(" %6d with length too small (len < ip->len)\r\n", ipstat.ips_toosmall);
144 lprint(" %6d with bad header length\r\n", ipstat.ips_badhlen);
145 lprint(" %6d with bad packet length\r\n", ipstat.ips_badlen);
146 lprint(" %6d fragments received\r\n", ipstat.ips_fragments);
147 lprint(" %6d fragments dropped\r\n", ipstat.ips_fragdropped);
148 lprint(" %6d fragments timed out\r\n", ipstat.ips_fragtimeout);
149 lprint(" %6d packets reassembled ok\r\n", ipstat.ips_reassembled);
150 lprint(" %6d outgoing packets fragmented\r\n", ipstat.ips_fragmented);
151 lprint(" %6d total outgoing fragments\r\n", ipstat.ips_ofragments);
152 lprint(" %6d with bad protocol field\r\n", ipstat.ips_noproto);
153 lprint(" %6d total packets delivered\r\n", ipstat.ips_delivered);
154 }
155
156 #if 0
157 void
158 vjstats()
159 {
160 lprint(" \r\n");
161
162 lprint("VJ compression stats:\r\n");
163
164 lprint(" %6d outbound packets (%d compressed)\r\n",
165 comp_s.sls_packets, comp_s.sls_compressed);
166 lprint(" %6d searches for connection stats (%d misses)\r\n",
167 comp_s.sls_searches, comp_s.sls_misses);
168 lprint(" %6d inbound uncompressed packets\r\n", comp_s.sls_uncompressedin);
169 lprint(" %6d inbound compressed packets\r\n", comp_s.sls_compressedin);
170 lprint(" %6d inbound unknown type packets\r\n", comp_s.sls_errorin);
171 lprint(" %6d inbound packets tossed due to error\r\n", comp_s.sls_tossed);
172 }
173 #endif
174
175 void
tcpstats()176 tcpstats()
177 {
178 lprint(" \r\n");
179
180 lprint("TCP stats:\r\n");
181
182 lprint(" %6d packets sent\r\n", tcpstat.tcps_sndtotal);
183 lprint(" %6d data packets (%d bytes)\r\n",
184 tcpstat.tcps_sndpack, tcpstat.tcps_sndbyte);
185 lprint(" %6d data packets retransmitted (%d bytes)\r\n",
186 tcpstat.tcps_sndrexmitpack, tcpstat.tcps_sndrexmitbyte);
187 lprint(" %6d ack-only packets (%d delayed)\r\n",
188 tcpstat.tcps_sndacks, tcpstat.tcps_delack);
189 lprint(" %6d URG only packets\r\n", tcpstat.tcps_sndurg);
190 lprint(" %6d window probe packets\r\n", tcpstat.tcps_sndprobe);
191 lprint(" %6d window update packets\r\n", tcpstat.tcps_sndwinup);
192 lprint(" %6d control (SYN/FIN/RST) packets\r\n", tcpstat.tcps_sndctrl);
193 lprint(" %6d times tcp_output did nothing\r\n", tcpstat.tcps_didnuttin);
194
195 lprint(" %6d packets received\r\n", tcpstat.tcps_rcvtotal);
196 lprint(" %6d acks (for %d bytes)\r\n",
197 tcpstat.tcps_rcvackpack, tcpstat.tcps_rcvackbyte);
198 lprint(" %6d duplicate acks\r\n", tcpstat.tcps_rcvdupack);
199 lprint(" %6d acks for unsent data\r\n", tcpstat.tcps_rcvacktoomuch);
200 lprint(" %6d packets received in sequence (%d bytes)\r\n",
201 tcpstat.tcps_rcvpack, tcpstat.tcps_rcvbyte);
202 lprint(" %6d completely duplicate packets (%d bytes)\r\n",
203 tcpstat.tcps_rcvduppack, tcpstat.tcps_rcvdupbyte);
204
205 lprint(" %6d packets with some duplicate data (%d bytes duped)\r\n",
206 tcpstat.tcps_rcvpartduppack, tcpstat.tcps_rcvpartdupbyte);
207 lprint(" %6d out-of-order packets (%d bytes)\r\n",
208 tcpstat.tcps_rcvoopack, tcpstat.tcps_rcvoobyte);
209 lprint(" %6d packets of data after window (%d bytes)\r\n",
210 tcpstat.tcps_rcvpackafterwin, tcpstat.tcps_rcvbyteafterwin);
211 lprint(" %6d window probes\r\n", tcpstat.tcps_rcvwinprobe);
212 lprint(" %6d window update packets\r\n", tcpstat.tcps_rcvwinupd);
213 lprint(" %6d packets received after close\r\n", tcpstat.tcps_rcvafterclose);
214 lprint(" %6d discarded for bad checksums\r\n", tcpstat.tcps_rcvbadsum);
215 lprint(" %6d discarded for bad header offset fields\r\n",
216 tcpstat.tcps_rcvbadoff);
217
218 lprint(" %6d connection requests\r\n", tcpstat.tcps_connattempt);
219 lprint(" %6d connection accepts\r\n", tcpstat.tcps_accepts);
220 lprint(" %6d connections established (including accepts)\r\n", tcpstat.tcps_connects);
221 lprint(" %6d connections closed (including %d drop)\r\n",
222 tcpstat.tcps_closed, tcpstat.tcps_drops);
223 lprint(" %6d embryonic connections dropped\r\n", tcpstat.tcps_conndrops);
224 lprint(" %6d segments we tried to get rtt (%d succeeded)\r\n",
225 tcpstat.tcps_segstimed, tcpstat.tcps_rttupdated);
226 lprint(" %6d retransmit timeouts\r\n", tcpstat.tcps_rexmttimeo);
227 lprint(" %6d connections dropped by rxmt timeout\r\n",
228 tcpstat.tcps_timeoutdrop);
229 lprint(" %6d persist timeouts\r\n", tcpstat.tcps_persisttimeo);
230 lprint(" %6d keepalive timeouts\r\n", tcpstat.tcps_keeptimeo);
231 lprint(" %6d keepalive probes sent\r\n", tcpstat.tcps_keepprobe);
232 lprint(" %6d connections dropped by keepalive\r\n", tcpstat.tcps_keepdrops);
233 lprint(" %6d correct ACK header predictions\r\n", tcpstat.tcps_predack);
234 lprint(" %6d correct data packet header predictions\n", tcpstat.tcps_preddat);
235 lprint(" %6d TCP cache misses\r\n", tcpstat.tcps_socachemiss);
236
237
238 /* lprint(" Packets received too short: %d\r\n", tcpstat.tcps_rcvshort); */
239 /* lprint(" Segments dropped due to PAWS: %d\r\n", tcpstat.tcps_pawsdrop); */
240
241 }
242
243 void
udpstats()244 udpstats()
245 {
246 lprint(" \r\n");
247
248 lprint("UDP stats:\r\n");
249 lprint(" %6d datagrams received\r\n", udpstat.udps_ipackets);
250 lprint(" %6d with packets shorter than header\r\n", udpstat.udps_hdrops);
251 lprint(" %6d with bad checksums\r\n", udpstat.udps_badsum);
252 lprint(" %6d with data length larger than packet\r\n", udpstat.udps_badlen);
253 lprint(" %6d UDP socket cache misses\r\n", udpstat.udpps_pcbcachemiss);
254 lprint(" %6d datagrams sent\r\n", udpstat.udps_opackets);
255 }
256
257 void
icmpstats()258 icmpstats()
259 {
260 lprint(" \r\n");
261 lprint("ICMP stats:\r\n");
262 lprint(" %6d ICMP packets received\r\n", icmpstat.icps_received);
263 lprint(" %6d were too short\r\n", icmpstat.icps_tooshort);
264 lprint(" %6d with bad checksums\r\n", icmpstat.icps_checksum);
265 lprint(" %6d with type not supported\r\n", icmpstat.icps_notsupp);
266 lprint(" %6d with bad type feilds\r\n", icmpstat.icps_badtype);
267 lprint(" %6d ICMP packets sent in reply\r\n", icmpstat.icps_reflect);
268 }
269
270 void
mbufstats()271 mbufstats()
272 {
273 struct SLIRPmbuf *m;
274 int i;
275
276 lprint(" \r\n");
277
278 lprint("Mbuf stats:\r\n");
279
280 lprint(" %6d mbufs allocated (%d max)\r\n", mbuf_alloced, mbuf_max);
281
282 i = 0;
283 for (m = m_freelist.m_next; m != &m_freelist; m = m->m_next)
284 i++;
285 lprint(" %6d mbufs on free list\r\n", i);
286
287 i = 0;
288 for (m = m_usedlist.m_next; m != &m_usedlist; m = m->m_next)
289 i++;
290 lprint(" %6d mbufs on used list\r\n", i);
291 lprint(" %6d mbufs queued as packets\r\n\r\n", if_queued);
292 }
293
294
sockstats(void)295 void sockstats(void)
296 {
297 char buff[256];
298 int n;
299 struct SLIRPsocket *so;
300
301 lprint(" \r\n");
302
303 lprint(
304 "Proto[state] Sock Local Address, Port Remote Address, Port RecvQ SendQ\r\n");
305
306 for (so = tcb.so_next; so != &tcb; so = so->so_next) {
307
308 n = sprintf(buff, "tcp[%s]", so->so_tcpcb?tcpstates[so->so_tcpcb->t_state]:"NONE");
309 while (n < 17)
310 buff[n++] = ' ';
311 buff[17] = 0;
312 lprint("%s %3d %15s %5d ",
313 buff, so->s,
314 inet_ntoa(so->so_laddr), ntohs(so->so_lport));
315 lprint("%15s %5d %5d %5d\r\n",
316 inet_ntoa(so->so_faddr), ntohs(so->so_fport),
317 so->so_rcv.sb_cc, so->so_snd.sb_cc);
318
319 }
320
321 for (so = udb.so_next; so != &udb; so = so->so_next) {
322
323 n = sprintf(buff, "udp[%d sec]", (so->so_expire - curtime) / 1000);
324 while (n < 17)
325 buff[n++] = ' ';
326 buff[17] = 0;
327 lprint("%s %3d %15s %5d ",
328 buff, so->s,
329 inet_ntoa(so->so_laddr), ntohs(so->so_lport));
330 lprint("%15s %5d %5d %5d\r\n",
331 inet_ntoa(so->so_faddr), ntohs(so->so_fport),
332 so->so_rcv.sb_cc, so->so_snd.sb_cc);
333 }
334 }
335
336
337
printf_sockstats(void)338 void printf_sockstats(void)
339 {
340 char buff[256];
341 int n;
342 struct SLIRPsocket *so;
343
344 printf(" \r\n");
345
346 printf(
347 "Proto[state] Sock Local Address, Port Remote Address, Port RecvQ SendQ\r\n");
348
349 for (so = tcb.so_next; so != &tcb; so = so->so_next) {
350
351 n = sprintf(buff, "tcp[%s]", so->so_tcpcb?tcpstates[so->so_tcpcb->t_state]:"NONE");
352 while (n < 17)
353 buff[n++] = ' ';
354 buff[17] = 0;
355 printf("%s %3d %15s %5d ",
356 buff, so->s,
357 inet_ntoa(so->so_laddr), ntohs(so->so_lport));
358 printf("%15s %5d %5d %5d\r\n",
359 inet_ntoa(so->so_faddr), ntohs(so->so_fport),
360 so->so_rcv.sb_cc, so->so_snd.sb_cc);
361
362 }
363
364 for (so = udb.so_next; so != &udb; so = so->so_next) {
365
366 n = sprintf(buff, "udp[%d sec]", (so->so_expire - curtime) / 1000);
367 while (n < 17)
368 buff[n++] = ' ';
369 buff[17] = 0;
370 printf("%s %3d %15s %5d ",
371 buff, so->s,
372 inet_ntoa(so->so_laddr), ntohs(so->so_lport));
373 printf("%15s %5d %5d %5d\r\n",
374 inet_ntoa(so->so_faddr), ntohs(so->so_fport),
375 so->so_rcv.sb_cc, so->so_snd.sb_cc);
376 }
377 printf("\n\n");
378 }
379
380 //Simple code to purge and close open sockets.
381 //This way we can open/close/open/close..
purgesocks(void)382 void purgesocks(void)
383 {
384 struct SLIRPsocket *so;
385
386 for (so = tcb.so_next; so != &tcb; so = so->so_next) {
387
388 closesocket(so->s); //close the socket
389 }
390 }
391
392 #if 1
393 void
slirp_exit(exit_status)394 slirp_exit(exit_status)
395 int exit_status;
396 {
397 // struct ttys *ttyp;
398
399 DEBUG_CALL("slirp_exit");
400 DEBUG_ARG("exit_status = %d", exit_status);
401
402 if (dostats) {
403 lprint_print = (int (*) _P((void *, const char *, va_list)))vfprintf;
404 if (!dfd)
405 debug_init("slirp_stats", 0xf);
406 lprint_arg = (char **)&dfd;
407
408 ipstats();
409 tcpstats();
410 udpstats();
411 icmpstats();
412 mbufstats();
413 sockstats();
414 fclose(dfd);
415 // allttystats();
416 // vjstats();
417 }
418
419 // for (ttyp = ttys; ttyp; ttyp = ttyp->next)
420 // tty_detached(ttyp, 1);
421
422 // if (slirp_forked) {
423 // /* Menendez time */
424 // if (kill(getppid(), SIGQUIT) < 0)
425 // lprint("Couldn't kill parent process %ld!\n",
426 // (long) getppid());
427 // }
428
429 /* Restore the terminal if we gotta */
430 // if(slirp_tty_restore)
431 // tcsetattr(0,TCSANOW, &slirp_tty_settings); /* NOW DAMMIT! */
432 // exit(exit_status);
433
434 //This will iterate though the sockets, and close them all (think redirects)
435 //PCem will have SLiRP open, close several times, which trips up SLiRP
436 //So for now I go through the sockets and close them
437 purgesocks();
438
439 }
440 #endif
441