1 | /* vi: set sw=4 ts=4: */
|
---|
2 | /*
|
---|
3 | * Mini netstat implementation(s) for busybox
|
---|
4 | * based in part on the netstat implementation from net-tools.
|
---|
5 | *
|
---|
6 | * Copyright (C) 2002 by Bart Visscher <magick@linux-fan.com>
|
---|
7 | *
|
---|
8 | * This program is free software; you can redistribute it and/or modify
|
---|
9 | * it under the terms of the GNU General Public License as published by
|
---|
10 | * the Free Software Foundation; either version 2 of the License, or
|
---|
11 | * (at your option) any later version.
|
---|
12 | *
|
---|
13 | * This program is distributed in the hope that it will be useful,
|
---|
14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
|
---|
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
---|
16 | * General Public License for more details.
|
---|
17 | *
|
---|
18 | * You should have received a copy of the GNU General Public License
|
---|
19 | * along with this program; if not, write to the Free Software
|
---|
20 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
---|
21 | *
|
---|
22 | * 2002-04-20
|
---|
23 | * IPV6 support added by Bart Visscher <magick@linux-fan.com>
|
---|
24 | */
|
---|
25 |
|
---|
26 | #include <stdio.h>
|
---|
27 | #include <stdlib.h>
|
---|
28 | #include <string.h>
|
---|
29 | #include <stdarg.h>
|
---|
30 | #include <signal.h>
|
---|
31 | #include <errno.h>
|
---|
32 | #include <sys/stat.h>
|
---|
33 | #include <dirent.h>
|
---|
34 | #include <unistd.h>
|
---|
35 | #include "inet_common.h"
|
---|
36 | #include "busybox.h"
|
---|
37 | #include "pwd_.h"
|
---|
38 |
|
---|
39 | #ifdef CONFIG_ROUTE
|
---|
40 | extern void displayroutes(int noresolve, int netstatfmt);
|
---|
41 | #endif
|
---|
42 |
|
---|
43 | #define NETSTAT_CONNECTED 0x01
|
---|
44 | #define NETSTAT_LISTENING 0x02
|
---|
45 | #define NETSTAT_NUMERIC 0x04
|
---|
46 | #define NETSTAT_TCP 0x10
|
---|
47 | #define NETSTAT_UDP 0x20
|
---|
48 | #define NETSTAT_RAW 0x40
|
---|
49 | #define NETSTAT_UNIX 0x80
|
---|
50 |
|
---|
51 | static int flags = NETSTAT_CONNECTED |
|
---|
52 | NETSTAT_TCP | NETSTAT_UDP | NETSTAT_RAW | NETSTAT_UNIX;
|
---|
53 |
|
---|
54 | #define PROGNAME_WIDTHs PROGNAME_WIDTH1(PROGNAME_WIDTH)
|
---|
55 | #define PROGNAME_WIDTH1(s) PROGNAME_WIDTH2(s)
|
---|
56 | #define PROGNAME_WIDTH2(s) #s
|
---|
57 |
|
---|
58 | #define PRG_HASH_SIZE 211
|
---|
59 |
|
---|
60 | enum {
|
---|
61 | TCP_ESTABLISHED = 1,
|
---|
62 | TCP_SYN_SENT,
|
---|
63 | TCP_SYN_RECV,
|
---|
64 | TCP_FIN_WAIT1,
|
---|
65 | TCP_FIN_WAIT2,
|
---|
66 | TCP_TIME_WAIT,
|
---|
67 | TCP_CLOSE,
|
---|
68 | TCP_CLOSE_WAIT,
|
---|
69 | TCP_LAST_ACK,
|
---|
70 | TCP_LISTEN,
|
---|
71 | TCP_CLOSING /* now a valid state */
|
---|
72 | };
|
---|
73 |
|
---|
74 | static const char * const tcp_state[] =
|
---|
75 | {
|
---|
76 | "",
|
---|
77 | "ESTABLISHED",
|
---|
78 | "SYN_SENT",
|
---|
79 | "SYN_RECV",
|
---|
80 | "FIN_WAIT1",
|
---|
81 | "FIN_WAIT2",
|
---|
82 | "TIME_WAIT",
|
---|
83 | "CLOSE",
|
---|
84 | "CLOSE_WAIT",
|
---|
85 | "LAST_ACK",
|
---|
86 | "LISTEN",
|
---|
87 | "CLOSING"
|
---|
88 | };
|
---|
89 |
|
---|
90 | typedef enum {
|
---|
91 | SS_FREE = 0, /* not allocated */
|
---|
92 | SS_UNCONNECTED, /* unconnected to any socket */
|
---|
93 | SS_CONNECTING, /* in process of connecting */
|
---|
94 | SS_CONNECTED, /* connected to socket */
|
---|
95 | SS_DISCONNECTING /* in process of disconnecting */
|
---|
96 | } socket_state;
|
---|
97 |
|
---|
98 | #define SO_ACCEPTCON (1<<16) /* performed a listen */
|
---|
99 | #define SO_WAITDATA (1<<17) /* wait data to read */
|
---|
100 | #define SO_NOSPACE (1<<18) /* no space to write */
|
---|
101 |
|
---|
102 | static char *itoa(unsigned int i)
|
---|
103 | {
|
---|
104 | /* 21 digits plus null terminator, good for 64-bit or smaller ints */
|
---|
105 | static char local[22];
|
---|
106 | char *p = &local[21];
|
---|
107 | *p-- = '\0';
|
---|
108 | do {
|
---|
109 | *p-- = '0' + i % 10;
|
---|
110 | i /= 10;
|
---|
111 | } while (i > 0);
|
---|
112 | return p + 1;
|
---|
113 | }
|
---|
114 |
|
---|
115 | static char *get_sname(int port, const char *proto, int num)
|
---|
116 | {
|
---|
117 | char *str=itoa(ntohs(port));
|
---|
118 | if (num) {
|
---|
119 | } else {
|
---|
120 | struct servent *se=getservbyport(port,proto);
|
---|
121 | if (se)
|
---|
122 | str=se->s_name;
|
---|
123 | }
|
---|
124 | if (!port) {
|
---|
125 | str="*";
|
---|
126 | }
|
---|
127 | return str;
|
---|
128 | }
|
---|
129 |
|
---|
130 | static void snprint_ip_port(char *ip_port, int size, struct sockaddr *addr, int port, char *proto, int numeric)
|
---|
131 | {
|
---|
132 | char *port_name;
|
---|
133 |
|
---|
134 | #ifdef CONFIG_FEATURE_IPV6
|
---|
135 | if (addr->sa_family == AF_INET6) {
|
---|
136 | INET6_rresolve(ip_port, size, (struct sockaddr_in6 *)addr,
|
---|
137 | (numeric&NETSTAT_NUMERIC) ? 0x0fff : 0);
|
---|
138 | } else
|
---|
139 | #endif
|
---|
140 | {
|
---|
141 | INET_rresolve(ip_port, size, (struct sockaddr_in *)addr,
|
---|
142 | 0x4000 | ((numeric&NETSTAT_NUMERIC) ? 0x0fff : 0),
|
---|
143 | 0xffffffff);
|
---|
144 | }
|
---|
145 | port_name=get_sname(htons(port), proto, numeric);
|
---|
146 | if ((strlen(ip_port) + strlen(port_name)) > 22)
|
---|
147 | ip_port[22 - strlen(port_name)] = '\0';
|
---|
148 | ip_port+=strlen(ip_port);
|
---|
149 | strcat(ip_port, ":");
|
---|
150 | strcat(ip_port, port_name);
|
---|
151 | }
|
---|
152 |
|
---|
153 | static void tcp_do_one(int lnr, const char *line)
|
---|
154 | {
|
---|
155 | char local_addr[64], rem_addr[64];
|
---|
156 | const char *state_str;
|
---|
157 | char more[512];
|
---|
158 | int num, local_port, rem_port, d, state, timer_run, uid, timeout;
|
---|
159 | #ifdef CONFIG_FEATURE_IPV6
|
---|
160 | struct sockaddr_in6 localaddr, remaddr;
|
---|
161 | char addr6[INET6_ADDRSTRLEN];
|
---|
162 | struct in6_addr in6;
|
---|
163 | #else
|
---|
164 | struct sockaddr_in localaddr, remaddr;
|
---|
165 | #endif
|
---|
166 | unsigned long rxq, txq, time_len, retr, inode;
|
---|
167 |
|
---|
168 | if (lnr == 0)
|
---|
169 | return;
|
---|
170 |
|
---|
171 | more[0] = '\0';
|
---|
172 | num = sscanf(line,
|
---|
173 | "%d: %64[0-9A-Fa-f]:%X %64[0-9A-Fa-f]:%X %X %lX:%lX %X:%lX %lX %d %d %ld %512s\n",
|
---|
174 | &d, local_addr, &local_port,
|
---|
175 | rem_addr, &rem_port, &state,
|
---|
176 | &txq, &rxq, &timer_run, &time_len, &retr, &uid, &timeout, &inode, more);
|
---|
177 |
|
---|
178 | if (strlen(local_addr) > 8) {
|
---|
179 | #ifdef CONFIG_FEATURE_IPV6
|
---|
180 | sscanf(local_addr, "%08X%08X%08X%08X",
|
---|
181 | &in6.s6_addr32[0], &in6.s6_addr32[1],
|
---|
182 | &in6.s6_addr32[2], &in6.s6_addr32[3]);
|
---|
183 | inet_ntop(AF_INET6, &in6, addr6, sizeof(addr6));
|
---|
184 | inet_pton(AF_INET6, addr6, (struct sockaddr *) &localaddr.sin6_addr);
|
---|
185 | sscanf(rem_addr, "%08X%08X%08X%08X",
|
---|
186 | &in6.s6_addr32[0], &in6.s6_addr32[1],
|
---|
187 | &in6.s6_addr32[2], &in6.s6_addr32[3]);
|
---|
188 | inet_ntop(AF_INET6, &in6, addr6, sizeof(addr6));
|
---|
189 | inet_pton(AF_INET6, addr6, (struct sockaddr *) &remaddr.sin6_addr);
|
---|
190 | localaddr.sin6_family = AF_INET6;
|
---|
191 | remaddr.sin6_family = AF_INET6;
|
---|
192 | #endif
|
---|
193 | } else {
|
---|
194 | sscanf(local_addr, "%X",
|
---|
195 | &((struct sockaddr_in *) &localaddr)->sin_addr.s_addr);
|
---|
196 | sscanf(rem_addr, "%X",
|
---|
197 | &((struct sockaddr_in *) &remaddr)->sin_addr.s_addr);
|
---|
198 | ((struct sockaddr *) &localaddr)->sa_family = AF_INET;
|
---|
199 | ((struct sockaddr *) &remaddr)->sa_family = AF_INET;
|
---|
200 | }
|
---|
201 |
|
---|
202 | if (num < 10) {
|
---|
203 | bb_error_msg("warning, got bogus tcp line.");
|
---|
204 | return;
|
---|
205 | }
|
---|
206 | state_str = tcp_state[state];
|
---|
207 | if ((rem_port && (flags&NETSTAT_CONNECTED)) ||
|
---|
208 | (!rem_port && (flags&NETSTAT_LISTENING)))
|
---|
209 | {
|
---|
210 | snprint_ip_port(local_addr, sizeof(local_addr),
|
---|
211 | (struct sockaddr *) &localaddr, local_port,
|
---|
212 | "tcp", flags&NETSTAT_NUMERIC);
|
---|
213 |
|
---|
214 | snprint_ip_port(rem_addr, sizeof(rem_addr),
|
---|
215 | (struct sockaddr *) &remaddr, rem_port,
|
---|
216 | "tcp", flags&NETSTAT_NUMERIC);
|
---|
217 |
|
---|
218 | printf("tcp %6ld %6ld %-23s %-23s %-12s\n",
|
---|
219 | rxq, txq, local_addr, rem_addr, state_str);
|
---|
220 |
|
---|
221 | }
|
---|
222 | }
|
---|
223 |
|
---|
224 | static void udp_do_one(int lnr, const char *line)
|
---|
225 | {
|
---|
226 | char local_addr[64], rem_addr[64];
|
---|
227 | char *state_str, more[512];
|
---|
228 | int num, local_port, rem_port, d, state, timer_run, uid, timeout;
|
---|
229 | #ifdef CONFIG_FEATURE_IPV6
|
---|
230 | struct sockaddr_in6 localaddr, remaddr;
|
---|
231 | char addr6[INET6_ADDRSTRLEN];
|
---|
232 | struct in6_addr in6;
|
---|
233 | #else
|
---|
234 | struct sockaddr_in localaddr, remaddr;
|
---|
235 | #endif
|
---|
236 | unsigned long rxq, txq, time_len, retr, inode;
|
---|
237 |
|
---|
238 | if (lnr == 0)
|
---|
239 | return;
|
---|
240 |
|
---|
241 | more[0] = '\0';
|
---|
242 | num = sscanf(line,
|
---|
243 | "%d: %64[0-9A-Fa-f]:%X %64[0-9A-Fa-f]:%X %X %lX:%lX %X:%lX %lX %d %d %ld %512s\n",
|
---|
244 | &d, local_addr, &local_port,
|
---|
245 | rem_addr, &rem_port, &state,
|
---|
246 | &txq, &rxq, &timer_run, &time_len, &retr, &uid, &timeout, &inode, more);
|
---|
247 |
|
---|
248 | if (strlen(local_addr) > 8) {
|
---|
249 | #ifdef CONFIG_FEATURE_IPV6
|
---|
250 | /* Demangle what the kernel gives us */
|
---|
251 | sscanf(local_addr, "%08X%08X%08X%08X",
|
---|
252 | &in6.s6_addr32[0], &in6.s6_addr32[1],
|
---|
253 | &in6.s6_addr32[2], &in6.s6_addr32[3]);
|
---|
254 | inet_ntop(AF_INET6, &in6, addr6, sizeof(addr6));
|
---|
255 | inet_pton(AF_INET6, addr6, (struct sockaddr *) &localaddr.sin6_addr);
|
---|
256 | sscanf(rem_addr, "%08X%08X%08X%08X",
|
---|
257 | &in6.s6_addr32[0], &in6.s6_addr32[1],
|
---|
258 | &in6.s6_addr32[2], &in6.s6_addr32[3]);
|
---|
259 | inet_ntop(AF_INET6, &in6, addr6, sizeof(addr6));
|
---|
260 | inet_pton(AF_INET6, addr6, (struct sockaddr *) &remaddr.sin6_addr);
|
---|
261 | localaddr.sin6_family = AF_INET6;
|
---|
262 | remaddr.sin6_family = AF_INET6;
|
---|
263 | #endif
|
---|
264 | } else {
|
---|
265 | sscanf(local_addr, "%X",
|
---|
266 | &((struct sockaddr_in *) &localaddr)->sin_addr.s_addr);
|
---|
267 | sscanf(rem_addr, "%X",
|
---|
268 | &((struct sockaddr_in *) &remaddr)->sin_addr.s_addr);
|
---|
269 | ((struct sockaddr *) &localaddr)->sa_family = AF_INET;
|
---|
270 | ((struct sockaddr *) &remaddr)->sa_family = AF_INET;
|
---|
271 | }
|
---|
272 |
|
---|
273 | if (num < 10) {
|
---|
274 | bb_error_msg("warning, got bogus udp line.");
|
---|
275 | return;
|
---|
276 | }
|
---|
277 | switch (state) {
|
---|
278 | case TCP_ESTABLISHED:
|
---|
279 | state_str = "ESTABLISHED";
|
---|
280 | break;
|
---|
281 |
|
---|
282 | case TCP_CLOSE:
|
---|
283 | state_str = "";
|
---|
284 | break;
|
---|
285 |
|
---|
286 | default:
|
---|
287 | state_str = "UNKNOWN";
|
---|
288 | break;
|
---|
289 | }
|
---|
290 |
|
---|
291 | #ifdef CONFIG_FEATURE_IPV6
|
---|
292 | # define notnull(A) (((A.sin6_family == AF_INET6) && \
|
---|
293 | ((A.sin6_addr.s6_addr32[0]) || \
|
---|
294 | (A.sin6_addr.s6_addr32[1]) || \
|
---|
295 | (A.sin6_addr.s6_addr32[2]) || \
|
---|
296 | (A.sin6_addr.s6_addr32[3]))) || \
|
---|
297 | ((A.sin6_family == AF_INET) && \
|
---|
298 | ((struct sockaddr_in *) &A)->sin_addr.s_addr))
|
---|
299 | #else
|
---|
300 | # define notnull(A) (A.sin_addr.s_addr)
|
---|
301 | #endif
|
---|
302 | if ((notnull(remaddr) && (flags&NETSTAT_CONNECTED)) ||
|
---|
303 | (!notnull(remaddr) && (flags&NETSTAT_LISTENING)))
|
---|
304 | {
|
---|
305 | snprint_ip_port(local_addr, sizeof(local_addr),
|
---|
306 | (struct sockaddr *) &localaddr, local_port,
|
---|
307 | "udp", flags&NETSTAT_NUMERIC);
|
---|
308 |
|
---|
309 | snprint_ip_port(rem_addr, sizeof(rem_addr),
|
---|
310 | (struct sockaddr *) &remaddr, rem_port,
|
---|
311 | "udp", flags&NETSTAT_NUMERIC);
|
---|
312 |
|
---|
313 | printf("udp %6ld %6ld %-23s %-23s %-12s\n",
|
---|
314 | rxq, txq, local_addr, rem_addr, state_str);
|
---|
315 |
|
---|
316 | }
|
---|
317 | }
|
---|
318 |
|
---|
319 | static void raw_do_one(int lnr, const char *line)
|
---|
320 | {
|
---|
321 | char local_addr[64], rem_addr[64];
|
---|
322 | char *state_str, more[512];
|
---|
323 | int num, local_port, rem_port, d, state, timer_run, uid, timeout;
|
---|
324 | #ifdef CONFIG_FEATURE_IPV6
|
---|
325 | struct sockaddr_in6 localaddr, remaddr;
|
---|
326 | char addr6[INET6_ADDRSTRLEN];
|
---|
327 | struct in6_addr in6;
|
---|
328 | #else
|
---|
329 | struct sockaddr_in localaddr, remaddr;
|
---|
330 | #endif
|
---|
331 | unsigned long rxq, txq, time_len, retr, inode;
|
---|
332 |
|
---|
333 | if (lnr == 0)
|
---|
334 | return;
|
---|
335 |
|
---|
336 | more[0] = '\0';
|
---|
337 | num = sscanf(line,
|
---|
338 | "%d: %64[0-9A-Fa-f]:%X %64[0-9A-Fa-f]:%X %X %lX:%lX %X:%lX %lX %d %d %ld %512s\n",
|
---|
339 | &d, local_addr, &local_port,
|
---|
340 | rem_addr, &rem_port, &state,
|
---|
341 | &txq, &rxq, &timer_run, &time_len, &retr, &uid, &timeout, &inode, more);
|
---|
342 |
|
---|
343 | if (strlen(local_addr) > 8) {
|
---|
344 | #ifdef CONFIG_FEATURE_IPV6
|
---|
345 | sscanf(local_addr, "%08X%08X%08X%08X",
|
---|
346 | &in6.s6_addr32[0], &in6.s6_addr32[1],
|
---|
347 | &in6.s6_addr32[2], &in6.s6_addr32[3]);
|
---|
348 | inet_ntop(AF_INET6, &in6, addr6, sizeof(addr6));
|
---|
349 | inet_pton(AF_INET6, addr6, (struct sockaddr *) &localaddr.sin6_addr);
|
---|
350 | sscanf(rem_addr, "%08X%08X%08X%08X",
|
---|
351 | &in6.s6_addr32[0], &in6.s6_addr32[1],
|
---|
352 | &in6.s6_addr32[2], &in6.s6_addr32[3]);
|
---|
353 | inet_ntop(AF_INET6, &in6, addr6, sizeof(addr6));
|
---|
354 | inet_pton(AF_INET6, addr6, (struct sockaddr *) &remaddr.sin6_addr);
|
---|
355 | localaddr.sin6_family = AF_INET6;
|
---|
356 | remaddr.sin6_family = AF_INET6;
|
---|
357 | #endif
|
---|
358 | } else {
|
---|
359 | sscanf(local_addr, "%X",
|
---|
360 | &((struct sockaddr_in *) &localaddr)->sin_addr.s_addr);
|
---|
361 | sscanf(rem_addr, "%X",
|
---|
362 | &((struct sockaddr_in *) &remaddr)->sin_addr.s_addr);
|
---|
363 | ((struct sockaddr *) &localaddr)->sa_family = AF_INET;
|
---|
364 | ((struct sockaddr *) &remaddr)->sa_family = AF_INET;
|
---|
365 | }
|
---|
366 |
|
---|
367 | if (num < 10) {
|
---|
368 | bb_error_msg("warning, got bogus raw line.");
|
---|
369 | return;
|
---|
370 | }
|
---|
371 | state_str=itoa(state);
|
---|
372 |
|
---|
373 | #ifdef CONFIG_FEATURE_IPV6
|
---|
374 | # define notnull(A) (((A.sin6_family == AF_INET6) && \
|
---|
375 | ((A.sin6_addr.s6_addr32[0]) || \
|
---|
376 | (A.sin6_addr.s6_addr32[1]) || \
|
---|
377 | (A.sin6_addr.s6_addr32[2]) || \
|
---|
378 | (A.sin6_addr.s6_addr32[3]))) || \
|
---|
379 | ((A.sin6_family == AF_INET) && \
|
---|
380 | ((struct sockaddr_in *) &A)->sin_addr.s_addr))
|
---|
381 | #else
|
---|
382 | # define notnull(A) (A.sin_addr.s_addr)
|
---|
383 | #endif
|
---|
384 | if ((notnull(remaddr) && (flags&NETSTAT_CONNECTED)) ||
|
---|
385 | (!notnull(remaddr) && (flags&NETSTAT_LISTENING)))
|
---|
386 | {
|
---|
387 | snprint_ip_port(local_addr, sizeof(local_addr),
|
---|
388 | (struct sockaddr *) &localaddr, local_port,
|
---|
389 | "raw", flags&NETSTAT_NUMERIC);
|
---|
390 |
|
---|
391 | snprint_ip_port(rem_addr, sizeof(rem_addr),
|
---|
392 | (struct sockaddr *) &remaddr, rem_port,
|
---|
393 | "raw", flags&NETSTAT_NUMERIC);
|
---|
394 |
|
---|
395 | printf("raw %6ld %6ld %-23s %-23s %-12s\n",
|
---|
396 | rxq, txq, local_addr, rem_addr, state_str);
|
---|
397 |
|
---|
398 | }
|
---|
399 | }
|
---|
400 |
|
---|
401 | #define HAS_INODE 1
|
---|
402 |
|
---|
403 | static void unix_do_one(int nr, const char *line)
|
---|
404 | {
|
---|
405 | static int has = 0;
|
---|
406 | char path[PATH_MAX], ss_flags[32];
|
---|
407 | char *ss_proto, *ss_state, *ss_type;
|
---|
408 | int num, state, type, inode;
|
---|
409 | void *d;
|
---|
410 | unsigned long refcnt, proto, unix_flags;
|
---|
411 |
|
---|
412 | if (nr == 0) {
|
---|
413 | if (strstr(line, "Inode"))
|
---|
414 | has |= HAS_INODE;
|
---|
415 | return;
|
---|
416 | }
|
---|
417 | path[0] = '\0';
|
---|
418 | num = sscanf(line, "%p: %lX %lX %lX %X %X %d %s",
|
---|
419 | &d, &refcnt, &proto, &unix_flags, &type, &state, &inode, path);
|
---|
420 | if (num < 6) {
|
---|
421 | bb_error_msg("warning, got bogus unix line.");
|
---|
422 | return;
|
---|
423 | }
|
---|
424 | if (!(has & HAS_INODE))
|
---|
425 | snprintf(path,sizeof(path),"%d",inode);
|
---|
426 |
|
---|
427 | if ((flags&(NETSTAT_LISTENING|NETSTAT_CONNECTED))!=(NETSTAT_LISTENING|NETSTAT_CONNECTED)) {
|
---|
428 | if ((state == SS_UNCONNECTED) && (unix_flags & SO_ACCEPTCON)) {
|
---|
429 | if (!(flags&NETSTAT_LISTENING))
|
---|
430 | return;
|
---|
431 | } else {
|
---|
432 | if (!(flags&NETSTAT_CONNECTED))
|
---|
433 | return;
|
---|
434 | }
|
---|
435 | }
|
---|
436 |
|
---|
437 | switch (proto) {
|
---|
438 | case 0:
|
---|
439 | ss_proto = "unix";
|
---|
440 | break;
|
---|
441 |
|
---|
442 | default:
|
---|
443 | ss_proto = "??";
|
---|
444 | }
|
---|
445 |
|
---|
446 | switch (type) {
|
---|
447 | case SOCK_STREAM:
|
---|
448 | ss_type = "STREAM";
|
---|
449 | break;
|
---|
450 |
|
---|
451 | case SOCK_DGRAM:
|
---|
452 | ss_type = "DGRAM";
|
---|
453 | break;
|
---|
454 |
|
---|
455 | case SOCK_RAW:
|
---|
456 | ss_type = "RAW";
|
---|
457 | break;
|
---|
458 |
|
---|
459 | case SOCK_RDM:
|
---|
460 | ss_type = "RDM";
|
---|
461 | break;
|
---|
462 |
|
---|
463 | case SOCK_SEQPACKET:
|
---|
464 | ss_type = "SEQPACKET";
|
---|
465 | break;
|
---|
466 |
|
---|
467 | default:
|
---|
468 | ss_type = "UNKNOWN";
|
---|
469 | }
|
---|
470 |
|
---|
471 | switch (state) {
|
---|
472 | case SS_FREE:
|
---|
473 | ss_state = "FREE";
|
---|
474 | break;
|
---|
475 |
|
---|
476 | case SS_UNCONNECTED:
|
---|
477 | /*
|
---|
478 | * Unconnected sockets may be listening
|
---|
479 | * for something.
|
---|
480 | */
|
---|
481 | if (unix_flags & SO_ACCEPTCON) {
|
---|
482 | ss_state = "LISTENING";
|
---|
483 | } else {
|
---|
484 | ss_state = "";
|
---|
485 | }
|
---|
486 | break;
|
---|
487 |
|
---|
488 | case SS_CONNECTING:
|
---|
489 | ss_state = "CONNECTING";
|
---|
490 | break;
|
---|
491 |
|
---|
492 | case SS_CONNECTED:
|
---|
493 | ss_state = "CONNECTED";
|
---|
494 | break;
|
---|
495 |
|
---|
496 | case SS_DISCONNECTING:
|
---|
497 | ss_state = "DISCONNECTING";
|
---|
498 | break;
|
---|
499 |
|
---|
500 | default:
|
---|
501 | ss_state = "UNKNOWN";
|
---|
502 | }
|
---|
503 |
|
---|
504 | strcpy(ss_flags, "[ ");
|
---|
505 | if (unix_flags & SO_ACCEPTCON)
|
---|
506 | strcat(ss_flags, "ACC ");
|
---|
507 | if (unix_flags & SO_WAITDATA)
|
---|
508 | strcat(ss_flags, "W ");
|
---|
509 | if (unix_flags & SO_NOSPACE)
|
---|
510 | strcat(ss_flags, "N ");
|
---|
511 |
|
---|
512 | strcat(ss_flags, "]");
|
---|
513 |
|
---|
514 | printf("%-5s %-6ld %-11s %-10s %-13s ",
|
---|
515 | ss_proto, refcnt, ss_flags, ss_type, ss_state);
|
---|
516 | if (has & HAS_INODE)
|
---|
517 | printf("%-6d ",inode);
|
---|
518 | else
|
---|
519 | printf("- ");
|
---|
520 | puts(path);
|
---|
521 | }
|
---|
522 |
|
---|
523 | #define _PATH_PROCNET_UDP "/proc/net/udp"
|
---|
524 | #define _PATH_PROCNET_UDP6 "/proc/net/udp6"
|
---|
525 | #define _PATH_PROCNET_TCP "/proc/net/tcp"
|
---|
526 | #define _PATH_PROCNET_TCP6 "/proc/net/tcp6"
|
---|
527 | #define _PATH_PROCNET_RAW "/proc/net/raw"
|
---|
528 | #define _PATH_PROCNET_RAW6 "/proc/net/raw6"
|
---|
529 | #define _PATH_PROCNET_UNIX "/proc/net/unix"
|
---|
530 |
|
---|
531 | static void do_info(const char *file, const char *name, void (*proc)(int, const char *))
|
---|
532 | {
|
---|
533 | char buffer[8192];
|
---|
534 | int lnr = 0;
|
---|
535 | FILE *procinfo;
|
---|
536 |
|
---|
537 | procinfo = fopen(file, "r");
|
---|
538 | if (procinfo == NULL) {
|
---|
539 | if (errno != ENOENT) {
|
---|
540 | perror(file);
|
---|
541 | } else {
|
---|
542 | bb_error_msg("no support for `%s' on this system.", name);
|
---|
543 | }
|
---|
544 | } else {
|
---|
545 | do {
|
---|
546 | if (fgets(buffer, sizeof(buffer), procinfo))
|
---|
547 | (proc)(lnr++, buffer);
|
---|
548 | } while (!feof(procinfo));
|
---|
549 | fclose(procinfo);
|
---|
550 | }
|
---|
551 | }
|
---|
552 |
|
---|
553 | /*
|
---|
554 | * Our main function.
|
---|
555 | */
|
---|
556 |
|
---|
557 | int netstat_main(int argc, char **argv)
|
---|
558 | {
|
---|
559 | int opt;
|
---|
560 | int new_flags=0;
|
---|
561 | int showroute = 0, extended = 0;
|
---|
562 | #ifdef CONFIG_FEATURE_IPV6
|
---|
563 | int inet=1;
|
---|
564 | int inet6=1;
|
---|
565 | #else
|
---|
566 | # define inet 1
|
---|
567 | # define inet6 0
|
---|
568 | #endif
|
---|
569 | while ((opt = getopt(argc, argv, "laenrtuwx")) != -1)
|
---|
570 | switch (opt) {
|
---|
571 | case 'l':
|
---|
572 | flags &= ~NETSTAT_CONNECTED;
|
---|
573 | flags |= NETSTAT_LISTENING;
|
---|
574 | break;
|
---|
575 | case 'a':
|
---|
576 | flags |= NETSTAT_LISTENING | NETSTAT_CONNECTED;
|
---|
577 | break;
|
---|
578 | case 'n':
|
---|
579 | flags |= NETSTAT_NUMERIC;
|
---|
580 | break;
|
---|
581 | case 'r':
|
---|
582 | showroute = 1;
|
---|
583 | break;
|
---|
584 | case 'e':
|
---|
585 | extended = 1;
|
---|
586 | break;
|
---|
587 | case 't':
|
---|
588 | new_flags |= NETSTAT_TCP;
|
---|
589 | break;
|
---|
590 | case 'u':
|
---|
591 | new_flags |= NETSTAT_UDP;
|
---|
592 | break;
|
---|
593 | case 'w':
|
---|
594 | new_flags |= NETSTAT_RAW;
|
---|
595 | break;
|
---|
596 | case 'x':
|
---|
597 | new_flags |= NETSTAT_UNIX;
|
---|
598 | break;
|
---|
599 | default:
|
---|
600 | bb_show_usage();
|
---|
601 | }
|
---|
602 | if ( showroute ) {
|
---|
603 | #ifdef CONFIG_ROUTE
|
---|
604 | displayroutes ( flags & NETSTAT_NUMERIC, !extended );
|
---|
605 | return 0;
|
---|
606 | #else
|
---|
607 | bb_error_msg_and_die( "-r (display routing table) is not compiled in." );
|
---|
608 | #endif
|
---|
609 | }
|
---|
610 |
|
---|
611 | if (new_flags) {
|
---|
612 | flags &= ~(NETSTAT_TCP|NETSTAT_UDP|NETSTAT_RAW|NETSTAT_UNIX);
|
---|
613 | flags |= new_flags;
|
---|
614 | }
|
---|
615 | if (flags&(NETSTAT_TCP|NETSTAT_UDP|NETSTAT_RAW)) {
|
---|
616 | printf("Active Internet connections "); /* xxx */
|
---|
617 |
|
---|
618 | if ((flags&(NETSTAT_LISTENING|NETSTAT_CONNECTED))==(NETSTAT_LISTENING|NETSTAT_CONNECTED))
|
---|
619 | printf("(servers and established)");
|
---|
620 | else {
|
---|
621 | if (flags&NETSTAT_LISTENING)
|
---|
622 | printf("(only servers)");
|
---|
623 | else
|
---|
624 | printf("(w/o servers)");
|
---|
625 | }
|
---|
626 | printf("\nProto Recv-Q Send-Q Local Address Foreign Address State \n");
|
---|
627 | }
|
---|
628 | if (inet && flags&NETSTAT_TCP)
|
---|
629 | do_info(_PATH_PROCNET_TCP,"AF INET (tcp)",tcp_do_one);
|
---|
630 | #ifdef CONFIG_FEATURE_IPV6
|
---|
631 | if (inet6 && flags&NETSTAT_TCP)
|
---|
632 | do_info(_PATH_PROCNET_TCP6,"AF INET6 (tcp)",tcp_do_one);
|
---|
633 | #endif
|
---|
634 | if (inet && flags&NETSTAT_UDP)
|
---|
635 | do_info(_PATH_PROCNET_UDP,"AF INET (udp)",udp_do_one);
|
---|
636 | #ifdef CONFIG_FEATURE_IPV6
|
---|
637 | if (inet6 && flags&NETSTAT_UDP)
|
---|
638 | do_info(_PATH_PROCNET_UDP6,"AF INET6 (udp)",udp_do_one);
|
---|
639 | #endif
|
---|
640 | if (inet && flags&NETSTAT_RAW)
|
---|
641 | do_info(_PATH_PROCNET_RAW,"AF INET (raw)",raw_do_one);
|
---|
642 | #ifdef CONFIG_FEATURE_IPV6
|
---|
643 | if (inet6 && flags&NETSTAT_RAW)
|
---|
644 | do_info(_PATH_PROCNET_RAW6,"AF INET6 (raw)",raw_do_one);
|
---|
645 | #endif
|
---|
646 | if (flags&NETSTAT_UNIX) {
|
---|
647 | printf("Active UNIX domain sockets ");
|
---|
648 | if ((flags&(NETSTAT_LISTENING|NETSTAT_CONNECTED))==(NETSTAT_LISTENING|NETSTAT_CONNECTED))
|
---|
649 | printf("(servers and established)");
|
---|
650 | else {
|
---|
651 | if (flags&NETSTAT_LISTENING)
|
---|
652 | printf("(only servers)");
|
---|
653 | else
|
---|
654 | printf("(w/o servers)");
|
---|
655 | }
|
---|
656 |
|
---|
657 | printf("\nProto RefCnt Flags Type State I-Node Path\n");
|
---|
658 | do_info(_PATH_PROCNET_UNIX,"AF UNIX",unix_do_one);
|
---|
659 | }
|
---|
660 | return 0;
|
---|
661 | }
|
---|