Annotation of src/usr.bin/netstat/ns.c, Revision 1.13
1.13 ! deraadt 1: /* $OpenBSD: ns.c,v 1.12 2005/03/25 17:01:04 jaredy Exp $ */
1.1 deraadt 2: /* $NetBSD: ns.c,v 1.8 1995/10/03 21:42:46 thorpej Exp $ */
3:
4: /*
5: * Copyright (c) 1983, 1988, 1993
6: * The Regents of the University of California. All rights reserved.
7: *
8: * Redistribution and use in source and binary forms, with or without
9: * modification, are permitted provided that the following conditions
10: * are met:
11: * 1. Redistributions of source code must retain the above copyright
12: * notice, this list of conditions and the following disclaimer.
13: * 2. Redistributions in binary form must reproduce the above copyright
14: * notice, this list of conditions and the following disclaimer in the
15: * documentation and/or other materials provided with the distribution.
1.11 millert 16: * 3. Neither the name of the University nor the names of its contributors
1.1 deraadt 17: * may be used to endorse or promote products derived from this software
18: * without specific prior written permission.
19: *
20: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30: * SUCH DAMAGE.
31: */
32:
33: #ifndef lint
34: #if 0
35: static char sccsid[] = "from: @(#)ns.c 8.1 (Berkeley) 6/6/93";
36: #else
1.13 ! deraadt 37: static char *rcsid = "$OpenBSD: ns.c,v 1.12 2005/03/25 17:01:04 jaredy Exp $";
1.1 deraadt 38: #endif
39: #endif /* not lint */
40:
41: #include <sys/param.h>
42: #include <sys/socket.h>
43: #include <sys/socketvar.h>
44: #include <sys/mbuf.h>
45: #include <sys/protosw.h>
46:
47: #include <net/route.h>
48: #include <net/if.h>
49:
50: #include <netinet/tcp_fsm.h>
51:
52: #include <netns/ns.h>
53: #include <netns/ns_pcb.h>
54: #include <netns/idp.h>
55: #include <netns/idp_var.h>
56: #include <netns/ns_error.h>
57: #include <netns/sp.h>
58: #include <netns/spidp.h>
59: #include <netns/spp_timer.h>
60: #include <netns/spp_var.h>
61: #define SANAMES
62: #include <netns/spp_debug.h>
63:
1.4 millert 64: #include <limits.h>
1.1 deraadt 65: #include <errno.h>
66: #include <stdio.h>
67: #include <string.h>
68: #include "netstat.h"
69:
70: struct nspcb nspcb;
71: struct sppcb sppcb;
72: struct socket sockb;
73:
1.7 millert 74: static char *ns_prpr(struct ns_addr *);
75: static void ns_erputil(int, int);
1.1 deraadt 76:
77: static int first = 1;
78:
79: /*
80: * Print a summary of connections related to a Network Systems
81: * protocol. For SPP, also give state of connection.
82: * Listening processes (aflag) are suppressed unless the
83: * -a (all) flag is specified.
84: */
85:
86: void
1.10 deraadt 87: nsprotopr(u_long off, char *name)
1.1 deraadt 88: {
89: struct nspcb cb;
1.6 mpech 90: struct nspcb *prev, *next;
1.1 deraadt 91: int isspp;
92:
93: if (off == 0)
94: return;
95: isspp = strcmp(name, "spp") == 0;
1.12 jaredy 96: kread(off, &cb, sizeof (struct nspcb));
1.1 deraadt 97: nspcb = cb;
98: prev = (struct nspcb *)off;
99: if (nspcb.nsp_next == (struct nspcb *)off)
100: return;
101: for (;nspcb.nsp_next != (struct nspcb *)off; prev = next) {
102: u_long ppcb;
103:
104: next = nspcb.nsp_next;
1.12 jaredy 105: kread((u_long)next, &nspcb, sizeof (nspcb));
1.1 deraadt 106: if (nspcb.nsp_prev != prev) {
107: printf("???\n");
108: break;
109: }
110: if (!aflag && ns_nullhost(nspcb.nsp_faddr) ) {
111: continue;
112: }
1.12 jaredy 113: kread((u_long)nspcb.nsp_socket, &sockb, sizeof (sockb));
1.1 deraadt 114: ppcb = (u_long) nspcb.nsp_pcb;
115: if (ppcb) {
116: if (isspp) {
1.12 jaredy 117: kread(ppcb, &sppcb, sizeof (sppcb));
1.1 deraadt 118: } else continue;
1.8 deraadt 119: } else if (isspp)
120: continue;
1.1 deraadt 121: if (first) {
122: printf("Active NS connections");
123: if (aflag)
124: printf(" (including servers)");
125: putchar('\n');
126: if (Aflag)
127: printf("%-8.8s ", "PCB");
128: printf(Aflag ?
1.10 deraadt 129: "%-5.5s %-6.6s %-6.6s %-18.18s %-18.18s %s\n" :
130: "%-5.5s %-6.6s %-6.6s %-22.22s %-22.22s %s\n",
131: "Proto", "Recv-Q", "Send-Q",
132: "Local Address", "Foreign Address", "(state)");
1.1 deraadt 133: first = 0;
134: }
135: if (Aflag)
1.3 millert 136: printf("%8lx ", ppcb);
137: printf("%-5.5s %6ld %6ld ", name, sockb.so_rcv.sb_cc,
1.10 deraadt 138: sockb.so_snd.sb_cc);
1.1 deraadt 139: printf(" %-22.22s", ns_prpr(&nspcb.nsp_laddr));
140: printf(" %-22.22s", ns_prpr(&nspcb.nsp_faddr));
141: if (isspp) {
142: extern char *tcpstates[];
143: if (sppcb.s_state >= TCP_NSTATES)
144: printf(" %d", sppcb.s_state);
145: else
146: printf(" %s", tcpstates[sppcb.s_state]);
147: }
148: putchar('\n');
149: prev = next;
150: }
151: }
152: #define ANY(x,y,z) \
1.3 millert 153: ((x) ? printf("\t%ld %s%s%s -- %s\n",x,y,plural(x),z,"x") : 0)
1.1 deraadt 154:
155: /*
156: * Dump SPP statistics structure.
157: */
158: void
1.10 deraadt 159: spp_stats(u_long off, char *name)
1.1 deraadt 160: {
161: struct spp_istat spp_istat;
162: #define sppstat spp_istat.newstats
163:
164: if (off == 0)
165: return;
1.12 jaredy 166: kread(off, &spp_istat, sizeof (spp_istat));
1.1 deraadt 167: printf("%s:\n", name);
1.3 millert 168: ANY((long)spp_istat.nonucn, "connection",
169: " dropped due to no new sockets ");
170: ANY((long)spp_istat.gonawy, "connection",
171: " terminated due to our end dying");
172: ANY((long)spp_istat.nonucn, "connection",
1.1 deraadt 173: " dropped due to inability to connect");
1.3 millert 174: ANY((long)spp_istat.noconn, "connection",
1.1 deraadt 175: " dropped due to inability to connect");
1.3 millert 176: ANY((long)spp_istat.notme, "connection",
1.1 deraadt 177: " incompleted due to mismatched id's");
1.3 millert 178: ANY((long)spp_istat.wrncon, "connection",
179: " dropped due to mismatched id's");
180: ANY((long)spp_istat.bdreas, "packet", " dropped out of sequence");
181: ANY((long)spp_istat.lstdup, "packet",
182: " duplicating the highest packet");
183: ANY((long)spp_istat.notyet, "packet",
184: " refused as exceeding allocation");
1.1 deraadt 185: ANY(sppstat.spps_connattempt, "connection", " initiated");
186: ANY(sppstat.spps_accepts, "connection", " accepted");
187: ANY(sppstat.spps_connects, "connection", " established");
188: ANY(sppstat.spps_drops, "connection", " dropped");
189: ANY(sppstat.spps_conndrops, "embryonic connection", " dropped");
190: ANY(sppstat.spps_closed, "connection", " closed (includes drops)");
191: ANY(sppstat.spps_segstimed, "packet", " where we tried to get rtt");
192: ANY(sppstat.spps_rttupdated, "time", " we got rtt");
193: ANY(sppstat.spps_delack, "delayed ack", " sent");
194: ANY(sppstat.spps_timeoutdrop, "connection", " dropped in rxmt timeout");
195: ANY(sppstat.spps_rexmttimeo, "retransmit timeout", "");
196: ANY(sppstat.spps_persisttimeo, "persist timeout", "");
197: ANY(sppstat.spps_keeptimeo, "keepalive timeout", "");
198: ANY(sppstat.spps_keepprobe, "keepalive probe", " sent");
199: ANY(sppstat.spps_keepdrops, "connection", " dropped in keepalive");
200: ANY(sppstat.spps_sndtotal, "total packet", " sent");
201: ANY(sppstat.spps_sndpack, "data packet", " sent");
202: ANY(sppstat.spps_sndbyte, "data byte", " sent");
203: ANY(sppstat.spps_sndrexmitpack, "data packet", " retransmitted");
204: ANY(sppstat.spps_sndrexmitbyte, "data byte", " retransmitted");
205: ANY(sppstat.spps_sndacks, "ack-only packet", " sent");
206: ANY(sppstat.spps_sndprobe, "window probe", " sent");
207: ANY(sppstat.spps_sndurg, "packet", " sent with URG only");
208: ANY(sppstat.spps_sndwinup, "window update-only packet", " sent");
209: ANY(sppstat.spps_sndctrl, "control (SYN|FIN|RST) packet", " sent");
210: ANY(sppstat.spps_sndvoid, "request", " to send a non-existant packet");
211: ANY(sppstat.spps_rcvtotal, "total packet", " received");
212: ANY(sppstat.spps_rcvpack, "packet", " received in sequence");
213: ANY(sppstat.spps_rcvbyte, "byte", " received in sequence");
214: ANY(sppstat.spps_rcvbadsum, "packet", " received with ccksum errs");
215: ANY(sppstat.spps_rcvbadoff, "packet", " received with bad offset");
216: ANY(sppstat.spps_rcvshort, "packet", " received too short");
217: ANY(sppstat.spps_rcvduppack, "duplicate-only packet", " received");
218: ANY(sppstat.spps_rcvdupbyte, "duplicate-only byte", " received");
219: ANY(sppstat.spps_rcvpartduppack, "packet", " with some duplicate data");
1.9 jsyn 220: ANY(sppstat.spps_rcvpartdupbyte, "duplicate byte", " in part-duplicate packet");
1.1 deraadt 221: ANY(sppstat.spps_rcvoopack, "out-of-order packet", " received");
222: ANY(sppstat.spps_rcvoobyte, "out-of-order byte", " received");
223: ANY(sppstat.spps_rcvpackafterwin, "packet", " with data after window");
224: ANY(sppstat.spps_rcvbyteafterwin, "byte", " rcvd after window");
225: ANY(sppstat.spps_rcvafterclose, "packet", " rcvd after 'close'");
226: ANY(sppstat.spps_rcvwinprobe, "rcvd window probe packet", "");
227: ANY(sppstat.spps_rcvdupack, "rcvd duplicate ack", "");
228: ANY(sppstat.spps_rcvacktoomuch, "rcvd ack", " for unsent data");
229: ANY(sppstat.spps_rcvackpack, "rcvd ack packet", "");
230: ANY(sppstat.spps_rcvackbyte, "byte", " acked by rcvd acks");
231: ANY(sppstat.spps_rcvwinupd, "rcvd window update packet", "");
232: }
233: #undef ANY
1.8 deraadt 234: #define ANY(x,y,z) ((x) ? printf("\t%d %s%s%s\n",x,y,plural(x),z) : 0)
1.1 deraadt 235:
236: /*
237: * Dump IDP statistics structure.
238: */
239: void
1.10 deraadt 240: idp_stats(u_long off, char *name)
1.1 deraadt 241: {
242: struct idpstat idpstat;
243:
244: if (off == 0)
245: return;
1.12 jaredy 246: kread(off, &idpstat, sizeof (idpstat));
1.1 deraadt 247: printf("%s:\n", name);
248: ANY(idpstat.idps_toosmall, "packet", " smaller than a header");
249: ANY(idpstat.idps_tooshort, "packet", " smaller than advertised");
250: ANY(idpstat.idps_badsum, "packet", " with bad checksums");
251: }
252:
253: static struct {
254: u_short code;
255: char *name;
256: char *where;
257: } ns_errnames[] = {
258: {0, "Unspecified Error", " at Destination"},
259: {1, "Bad Checksum", " at Destination"},
260: {2, "No Listener", " at Socket"},
261: {3, "Packet", " Refused due to lack of space at Destination"},
262: {01000, "Unspecified Error", " while gatewayed"},
263: {01001, "Bad Checksum", " while gatewayed"},
264: {01002, "Packet", " forwarded too many times"},
265: {01003, "Packet", " too large to be forwarded"},
266: {-1, 0, 0},
267: };
268:
269: /*
270: * Dump NS Error statistics structure.
271: */
272: /*ARGSUSED*/
273: void
1.10 deraadt 274: nserr_stats(u_long off, char *name)
1.1 deraadt 275: {
276: struct ns_errstat ns_errstat;
1.6 mpech 277: int j;
278: int histoprint = 1;
1.1 deraadt 279: int z;
280:
281: if (off == 0)
282: return;
1.12 jaredy 283: kread(off, &ns_errstat, sizeof (ns_errstat));
1.1 deraadt 284: printf("NS error statistics:\n");
285: ANY(ns_errstat.ns_es_error, "call", " to ns_error");
286: ANY(ns_errstat.ns_es_oldshort, "error",
287: " ignored due to insufficient addressing");
288: ANY(ns_errstat.ns_es_oldns_err, "error request",
289: " in response to error packets");
290: ANY(ns_errstat.ns_es_tooshort, "error packet",
291: " received incomplete");
292: ANY(ns_errstat.ns_es_badcode, "error packet",
293: " received of unknown type");
1.8 deraadt 294: for (j = 0; j < NS_ERR_MAX; j ++) {
1.1 deraadt 295: z = ns_errstat.ns_es_outhist[j];
296: if (z && histoprint) {
297: printf("Output Error Histogram:\n");
298: histoprint = 0;
299: }
300: ns_erputil(z, ns_errstat.ns_es_codes[j]);
301:
302: }
303: histoprint = 1;
1.8 deraadt 304: for (j = 0; j < NS_ERR_MAX; j ++) {
1.1 deraadt 305: z = ns_errstat.ns_es_inhist[j];
306: if (z && histoprint) {
307: printf("Input Error Histogram:\n");
308: histoprint = 0;
309: }
310: ns_erputil(z, ns_errstat.ns_es_codes[j]);
311: }
312: }
313:
314: static void
1.10 deraadt 315: ns_erputil(int z, int c)
1.1 deraadt 316: {
1.10 deraadt 317: char *name, *where;
318: char codebuf[30];
1.1 deraadt 319: int j;
320:
1.8 deraadt 321: for (j = 0;; j ++) {
1.1 deraadt 322: if ((name = ns_errnames[j].name) == 0)
323: break;
324: if (ns_errnames[j].code == c)
325: break;
326: }
1.8 deraadt 327: if (name == 0) {
1.1 deraadt 328: if (c > 01000)
329: where = "in transit";
330: else
331: where = "at destination";
1.5 deraadt 332: snprintf(codebuf, sizeof codebuf,
333: "Unknown XNS error code 0%o", c);
1.1 deraadt 334: name = codebuf;
335: } else
1.8 deraadt 336: where = ns_errnames[j].where;
1.1 deraadt 337: ANY(z, name, where);
338: }
339:
340: static struct sockaddr_ns ssns = {AF_NS};
341:
342: static
1.10 deraadt 343: char *ns_prpr(struct ns_addr *x)
1.1 deraadt 344: {
345: struct sockaddr_ns *sns = &ssns;
346:
347: sns->sns_addr = *x;
348: return(ns_print((struct sockaddr *)sns));
349: }
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