1 /* $NetBSD: atalk.c,v 1.21 2022/09/02 06:25:43 msaitoh Exp $ */ 2 3 /* 4 * Copyright (c) 1983, 1988, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 */ 31 32 #include <sys/cdefs.h> 33 #ifndef lint 34 #if 0 35 static char sccsid[] = "from @(#)atalk.c 1.1 (Whistle) 6/6/96"; 36 #else 37 __RCSID("$NetBSD: atalk.c,v 1.21 2022/09/02 06:25:43 msaitoh Exp $"); 38 #endif 39 #endif /* not lint */ 40 41 #include <sys/param.h> 42 #include <sys/queue.h> 43 #include <sys/socket.h> 44 #include <sys/socketvar.h> 45 #include <sys/mbuf.h> 46 #include <sys/protosw.h> 47 #include <sys/sysctl.h> 48 49 #include <net/route.h> 50 #include <net/if.h> 51 52 #include <netinet/tcp_fsm.h> 53 54 #include <netatalk/at.h> 55 #include <netatalk/ddp_var.h> 56 57 #include <err.h> 58 #include <nlist.h> 59 #include <kvm.h> 60 #include <errno.h> 61 #include <stdio.h> 62 #include <string.h> 63 #include "netstat.h" 64 #include "prog_ops.h" 65 66 static int first = 1; 67 68 /* 69 * Print a summary of connections related to a Network Systems 70 * protocol. For XXX, also give state of connection. 71 * Listening processes (aflag) are suppressed unless the 72 * -a (all) flag is specified. 73 */ 74 75 static const char * 76 at_pr_net(const struct sockaddr_at *sat, int numeric) 77 { 78 static char mybuf[50]; 79 80 if (!numeric) { 81 switch (sat->sat_addr.s_net) { 82 case 0xffff: 83 return "????"; 84 case ATADDR_ANYNET: 85 return "*"; 86 } 87 } 88 (void)snprintf(mybuf, sizeof(mybuf), "%hu", 89 ntohs(sat->sat_addr.s_net)); 90 return mybuf; 91 } 92 93 static const char * 94 at_pr_host(const struct sockaddr_at *sat, int numeric) 95 { 96 static char mybuf[50]; 97 98 if (!numeric) { 99 switch (sat->sat_addr.s_node) { 100 case ATADDR_BCAST: 101 return "bcast"; 102 case ATADDR_ANYNODE: 103 return "*"; 104 } 105 } 106 (void)snprintf(mybuf, sizeof(mybuf), "%d", 107 (unsigned int)sat->sat_addr.s_node); 108 return mybuf; 109 } 110 111 static const char * 112 at_pr_port(const struct sockaddr_at *sat) 113 { 114 static char mybuf[50]; 115 116 switch (sat->sat_port) { 117 case ATADDR_ANYPORT: 118 return "*"; 119 case 0xff: 120 return "????"; 121 default: 122 (void)snprintf(mybuf, sizeof(mybuf), "%d", 123 (unsigned int)sat->sat_port); 124 return mybuf; 125 } 126 } 127 128 static const char * 129 at_pr_range(const struct sockaddr_at *sat) 130 { 131 static char mybuf[50]; 132 133 if (sat->sat_range.r_netrange.nr_firstnet 134 != sat->sat_range.r_netrange.nr_lastnet) { 135 (void)snprintf(mybuf, sizeof(mybuf), "%d-%d", 136 ntohs(sat->sat_range.r_netrange.nr_firstnet), 137 ntohs(sat->sat_range.r_netrange.nr_lastnet)); 138 } else { 139 (void)snprintf(mybuf, sizeof(mybuf), "%d", 140 ntohs(sat->sat_range.r_netrange.nr_firstnet)); 141 } 142 return mybuf; 143 } 144 145 146 /* what == 0 for addr only == 3 147 * 1 for net 148 * 2 for host 149 * 4 for port 150 * 8 for numeric only 151 */ 152 const char * 153 atalk_print(const struct sockaddr *sa, int what) 154 { 155 const struct sockaddr_at *sat = (const struct sockaddr_at *) sa; 156 static char mybuf[50]; 157 int numeric = (what & 0x08); 158 159 mybuf[0] = 0; 160 switch (what & 0x13) { 161 case 0: 162 mybuf[0] = 0; 163 break; 164 case 1: 165 (void)snprintf(mybuf, sizeof(mybuf), "%s", 166 at_pr_net(sat, numeric)); 167 break; 168 case 2: 169 (void)snprintf(mybuf, sizeof(mybuf), "%s", 170 at_pr_host(sat, numeric)); 171 break; 172 case 3: 173 (void)snprintf(mybuf, sizeof(mybuf), "%s.%s", 174 at_pr_net(sat, numeric), 175 at_pr_host(sat, numeric)); 176 break; 177 case 0x10: 178 (void)snprintf(mybuf, sizeof(mybuf), "%s", at_pr_range(sat)); 179 } 180 if (what & 4) { 181 (void)snprintf(mybuf + strlen(mybuf), 182 sizeof(mybuf) - strlen(mybuf), ".%s", at_pr_port(sat)); 183 } 184 return mybuf; 185 } 186 187 const char * 188 atalk_print2(const struct sockaddr *sa, const struct sockaddr *mask, int what) 189 { 190 int n, l; 191 static char buf[100]; 192 const struct sockaddr_at *sat1, *sat2; 193 struct sockaddr_at thesockaddr; 194 struct sockaddr *sa2; 195 196 sat1 = (const struct sockaddr_at *) sa; 197 sat2 = (const struct sockaddr_at *) mask; 198 sa2 = (struct sockaddr *) & thesockaddr; 199 200 thesockaddr.sat_addr.s_net = sat1->sat_addr.s_net & 201 sat2->sat_addr.s_net; 202 n = snprintf(buf, sizeof(buf), "%s", atalk_print(sa2, 1 | (what & 8))); 203 if (n >= (int)sizeof(buf)) 204 n = sizeof(buf) - 1; 205 else if (n == -1) 206 n = 0; /* What else can be done ? */ 207 if (sat2->sat_addr.s_net != 0xFFFF) { 208 thesockaddr.sat_addr.s_net = sat1->sat_addr.s_net | 209 ~sat2->sat_addr.s_net; 210 l = snprintf(buf + n, sizeof(buf) - n, 211 "-%s", atalk_print(sa2, 1 | (what & 8))); 212 if (l >= (int)(sizeof(buf) - n)) 213 l = sizeof(buf) - n - 1; 214 if (l > 0) 215 n += l; 216 } 217 if (what & 2) { 218 l = snprintf(buf + n, sizeof(buf) - n, ".%s", 219 atalk_print(sa, what & (~1))); 220 if (l >= (int)(sizeof(buf) - n)) 221 l = sizeof(buf) - n - 1; 222 if (l > 0) 223 n += l; 224 } 225 return buf; 226 } 227 228 void 229 atalkprotopr(u_long off, const char *name) 230 { 231 struct ddpcb ddpcb; 232 struct socket sockb; 233 struct ddpcb *next; 234 struct ddpcb *initial; 235 int width = 22; 236 if (off == 0) 237 return; 238 if (kread(off, (char *)&initial, sizeof(struct ddpcb *)) < 0) 239 return; 240 for (next = initial; next != NULL;) { 241 u_long ppcb = (u_long)next; 242 243 if (kread((u_long)next, (char *)&ddpcb, sizeof(ddpcb)) < 0) 244 return; 245 next = ddpcb.ddp_next; 246 #if 0 247 if (!aflag && atalk_nullhost(ddpcb.ddp_lsat)) 248 continue; 249 #endif 250 if (kread((u_long)ddpcb.ddp_socket, 251 (char *)&sockb, sizeof(sockb)) < 0) 252 return; 253 if (first) { 254 printf("Active ATALK connections"); 255 if (aflag) 256 printf(" (including servers)"); 257 putchar('\n'); 258 if (Aflag) { 259 width = 18; 260 printf("%-8.8s ", "PCB"); 261 } 262 printf("%-5.5s %-6.6s %-6.6s %*.*s %*.*s %s\n", 263 "Proto", "Recv-Q", "Send-Q", 264 -width, width, "Local Address", 265 -width, width, "Foreign Address", "(state)"); 266 first = 0; 267 } 268 if (Aflag) 269 printf("%8lx ", ppcb); 270 printf("%-5.5s %6ld %6ld ", name, sockb.so_rcv.sb_cc, 271 sockb.so_snd.sb_cc); 272 printf(" %*.*s", -width, width, 273 atalk_print((struct sockaddr *)&ddpcb.ddp_lsat, 7)); 274 printf(" %*.*s", -width, width, 275 atalk_print((struct sockaddr *)&ddpcb.ddp_fsat, 7)); 276 putchar('\n'); 277 } 278 } 279 #define ANY(x,y,z) \ 280 ((sflag==1 || (x)) ? \ 281 printf("\t%llu %s%s%s\n",(unsigned long long)x,y,plural(x),z) : 0) 282 283 /* 284 * Dump DDP statistics structure. 285 */ 286 void 287 ddp_stats(u_long off, const char *name) 288 { 289 uint64_t ddpstat[DDP_NSTATS]; 290 291 if (use_sysctl) { 292 size_t size = sizeof(ddpstat); 293 294 if (prog_sysctlbyname("net.atalk.ddp.stats", ddpstat, &size, 295 NULL, 0) == -1 && errno != ENOMEM) 296 return; 297 } else { 298 warnx("%s stats not available via KVM.", name); 299 return; 300 } 301 302 printf("%s:\n", name); 303 304 ANY(ddpstat[DDP_STAT_SHORT], "packet", " with short headers "); 305 ANY(ddpstat[DDP_STAT_LONG], "packet", " with long headers "); 306 ANY(ddpstat[DDP_STAT_NOSUM], "packet", " with no checksum "); 307 ANY(ddpstat[DDP_STAT_TOOSHORT], "packet", " too short "); 308 ANY(ddpstat[DDP_STAT_BADSUM], "packet", " with bad checksum "); 309 ANY(ddpstat[DDP_STAT_TOOSMALL], "packet", " with not enough data "); 310 ANY(ddpstat[DDP_STAT_FORWARD], "packet", " forwarded "); 311 ANY(ddpstat[DDP_STAT_ENCAP], "packet", " encapsulated "); 312 ANY(ddpstat[DDP_STAT_CANTFORWARD], "packet", 313 " rcvd for unreachable dest "); 314 ANY(ddpstat[DDP_STAT_NOSOCKSPACE], "packet", 315 " dropped due to no socket space "); 316 } 317 #undef ANY 318
Indexes created Mon Sep 22 10:09:38 GMT 2025