blob: c7934423ba0da9b08db41d338375b1e519e86929 [file] [log] [blame]
Eric Andersen31a0ece2001-10-31 11:00:46 +00001/* 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 *
Eric Andersen51b8bd62002-07-03 11:46:38 +00006 * Copyright (C) 2002 by Bart Visscher <magick@linux-fan.com>
Eric Andersen31a0ece2001-10-31 11:00:46 +00007 *
Eric Andersen51b8bd62002-07-03 11:46:38 +00008 * 2002-04-20
9 * IPV6 support added by Bart Visscher <magick@linux-fan.com>
"Robert P. J. Day"2819f752006-07-11 11:32:31 +000010 *
Denis Vlasenko6e69e422008-07-27 12:10:07 +000011 * 2008-07-10
12 * optional '-p' flag support ported from net-tools by G. Somlo <somlo@cmu.edu>
13 *
Denys Vlasenko0ef64bd2010-08-16 20:14:46 +020014 * Licensed under GPLv2 or later, see file LICENSE in this source tree.
Eric Andersen31a0ece2001-10-31 11:00:46 +000015 */
Denys Vlasenko47367e12016-11-23 09:05:14 +010016//config:config NETSTAT
Denys Vlasenko4eed2c62017-07-18 22:01:24 +020017//config: bool "netstat (10 kb)"
Denys Vlasenko47367e12016-11-23 09:05:14 +010018//config: default y
19//config: select PLATFORM_LINUX
20//config: help
Denys Vlasenko72089cf2017-07-21 09:50:55 +020021//config: netstat prints information about the Linux networking subsystem.
Denys Vlasenko47367e12016-11-23 09:05:14 +010022//config:
23//config:config FEATURE_NETSTAT_WIDE
Denys Vlasenkof5604222017-01-10 14:58:54 +010024//config: bool "Enable wide output"
Denys Vlasenko47367e12016-11-23 09:05:14 +010025//config: default y
26//config: depends on NETSTAT
27//config: help
Denys Vlasenko72089cf2017-07-21 09:50:55 +020028//config: Add support for wide columns. Useful when displaying IPv6 addresses
29//config: (-W option).
Denys Vlasenko47367e12016-11-23 09:05:14 +010030//config:
31//config:config FEATURE_NETSTAT_PRG
32//config: bool "Enable PID/Program name output"
33//config: default y
34//config: depends on NETSTAT
35//config: help
Denys Vlasenko72089cf2017-07-21 09:50:55 +020036//config: Add support for -p flag to print out PID and program name.
37//config: +700 bytes of code.
Denys Vlasenko47367e12016-11-23 09:05:14 +010038
39//applet:IF_NETSTAT(APPLET(netstat, BB_DIR_BIN, BB_SUID_DROP))
40
41//kbuild:lib-$(CONFIG_NETSTAT) += netstat.o
Eric Andersen31a0ece2001-10-31 11:00:46 +000042
Denis Vlasenkob6adbf12007-05-26 19:00:18 +000043#include "libbb.h"
Rob Landleyc9c1a412006-07-12 19:17:55 +000044#include "inet_common.h"
Eric Andersen31a0ece2001-10-31 11:00:46 +000045
Bob Dunlop55a046b2010-10-27 02:12:29 +020046//usage:#define netstat_trivial_usage
47//usage: "[-"IF_ROUTE("r")"al] [-tuwx] [-en"IF_FEATURE_NETSTAT_WIDE("W")IF_FEATURE_NETSTAT_PRG("p")"]"
48//usage:#define netstat_full_usage "\n\n"
49//usage: "Display networking information\n"
Bob Dunlop55a046b2010-10-27 02:12:29 +020050//usage: IF_ROUTE(
51//usage: "\n -r Routing table"
52//usage: )
53//usage: "\n -a All sockets"
54//usage: "\n -l Listening sockets"
55//usage: "\n Else: connected sockets"
56//usage: "\n -t TCP sockets"
57//usage: "\n -u UDP sockets"
58//usage: "\n -w Raw sockets"
59//usage: "\n -x Unix sockets"
60//usage: "\n Else: all socket types"
61//usage: "\n -e Other/more information"
62//usage: "\n -n Don't resolve names"
63//usage: IF_FEATURE_NETSTAT_WIDE(
64//usage: "\n -W Wide display"
65//usage: )
66//usage: IF_FEATURE_NETSTAT_PRG(
67//usage: "\n -p Show PID/program name for sockets"
68//usage: )
69
Denis Vlasenko6e69e422008-07-27 12:10:07 +000070#define NETSTAT_OPTS "laentuwx" \
Denis Vlasenko5e34ff22009-04-21 11:09:40 +000071 IF_ROUTE( "r") \
72 IF_FEATURE_NETSTAT_WIDE("W") \
73 IF_FEATURE_NETSTAT_PRG( "p")
Denis Vlasenko6e69e422008-07-27 12:10:07 +000074
Denis Vlasenko418a7fb2007-05-15 23:57:46 +000075enum {
Denis Vlasenko6e69e422008-07-27 12:10:07 +000076 OPT_sock_listen = 1 << 0, // l
77 OPT_sock_all = 1 << 1, // a
78 OPT_extended = 1 << 2, // e
79 OPT_noresolve = 1 << 3, // n
80 OPT_sock_tcp = 1 << 4, // t
81 OPT_sock_udp = 1 << 5, // u
82 OPT_sock_raw = 1 << 6, // w
83 OPT_sock_unix = 1 << 7, // x
Bob Dunlop55a046b2010-10-27 02:12:29 +020084 OPTBIT_x = 7,
85 IF_ROUTE( OPTBIT_ROUTE,)
86 IF_FEATURE_NETSTAT_WIDE(OPTBIT_WIDE ,)
87 IF_FEATURE_NETSTAT_PRG( OPTBIT_PRG ,)
Denis Vlasenko5e34ff22009-04-21 11:09:40 +000088 OPT_route = IF_ROUTE( (1 << OPTBIT_ROUTE)) + 0, // r
89 OPT_wide = IF_FEATURE_NETSTAT_WIDE((1 << OPTBIT_WIDE )) + 0, // W
90 OPT_prg = IF_FEATURE_NETSTAT_PRG( (1 << OPTBIT_PRG )) + 0, // p
Denis Vlasenko418a7fb2007-05-15 23:57:46 +000091};
Denis Vlasenko418a7fb2007-05-15 23:57:46 +000092
Denis Vlasenko703e2022007-01-22 14:12:08 +000093#define NETSTAT_CONNECTED 0x01
94#define NETSTAT_LISTENING 0x02
95#define NETSTAT_NUMERIC 0x04
Denis Vlasenko67b23e62006-10-03 21:00:06 +000096/* Must match getopt32 option string */
Denis Vlasenko703e2022007-01-22 14:12:08 +000097#define NETSTAT_TCP 0x10
98#define NETSTAT_UDP 0x20
99#define NETSTAT_RAW 0x40
100#define NETSTAT_UNIX 0x80
101#define NETSTAT_ALLPROTO (NETSTAT_TCP|NETSTAT_UDP|NETSTAT_RAW|NETSTAT_UNIX)
Eric Andersen31a0ece2001-10-31 11:00:46 +0000102
Eric Andersen31a0ece2001-10-31 11:00:46 +0000103
Eric Andersen31a0ece2001-10-31 11:00:46 +0000104enum {
Denis Vlasenko703e2022007-01-22 14:12:08 +0000105 TCP_ESTABLISHED = 1,
106 TCP_SYN_SENT,
107 TCP_SYN_RECV,
108 TCP_FIN_WAIT1,
109 TCP_FIN_WAIT2,
110 TCP_TIME_WAIT,
111 TCP_CLOSE,
112 TCP_CLOSE_WAIT,
113 TCP_LAST_ACK,
114 TCP_LISTEN,
Denis Vlasenko6e69e422008-07-27 12:10:07 +0000115 TCP_CLOSING, /* now a valid state */
Eric Andersen31a0ece2001-10-31 11:00:46 +0000116};
117
Denis Vlasenko6ca409e2007-08-12 20:58:27 +0000118static const char *const tcp_state[] = {
Denis Vlasenko703e2022007-01-22 14:12:08 +0000119 "",
120 "ESTABLISHED",
121 "SYN_SENT",
122 "SYN_RECV",
123 "FIN_WAIT1",
124 "FIN_WAIT2",
125 "TIME_WAIT",
126 "CLOSE",
127 "CLOSE_WAIT",
128 "LAST_ACK",
129 "LISTEN",
130 "CLOSING"
Eric Andersen31a0ece2001-10-31 11:00:46 +0000131};
132
133typedef enum {
Denis Vlasenko703e2022007-01-22 14:12:08 +0000134 SS_FREE = 0, /* not allocated */
135 SS_UNCONNECTED, /* unconnected to any socket */
136 SS_CONNECTING, /* in process of connecting */
137 SS_CONNECTED, /* connected to socket */
138 SS_DISCONNECTING /* in process of disconnecting */
Eric Andersen31a0ece2001-10-31 11:00:46 +0000139} socket_state;
140
Denys Vlasenkodd88ba82010-10-27 13:10:29 +0200141#define SO_ACCEPTCON (1<<16) /* performed a listen */
142#define SO_WAITDATA (1<<17) /* wait data to read */
143#define SO_NOSPACE (1<<18) /* no space to write */
Eric Andersen31a0ece2001-10-31 11:00:46 +0000144
Denys Vlasenkodd88ba82010-10-27 13:10:29 +0200145#define ADDR_NORMAL_WIDTH 23
Denis Vlasenko418a7fb2007-05-15 23:57:46 +0000146/* When there are IPv6 connections the IPv6 addresses will be
147 * truncated to none-recognition. The '-W' option makes the
Maninder Singh97c64912015-05-25 13:46:36 +0200148 * address columns wide enough to accommodate for longest possible
Denis Vlasenko418a7fb2007-05-15 23:57:46 +0000149 * IPv6 addresses, i.e. addresses of the form
150 * xxxx:xxxx:xxxx:xxxx:xxxx:xxxx:ddd.ddd.ddd.ddd
151 */
Denys Vlasenkodd88ba82010-10-27 13:10:29 +0200152#define ADDR_WIDE 51 /* INET6_ADDRSTRLEN + 5 for the port number */
153#if ENABLE_FEATURE_NETSTAT_WIDE
Denys Vlasenko327f5502013-11-29 16:45:45 +0100154# define FMT_NET_CONN_DATA "%s %6lu %6lu %-*s %-*s %-12s"
Denys Vlasenkodd88ba82010-10-27 13:10:29 +0200155# define FMT_NET_CONN_HEADER "\nProto Recv-Q Send-Q %-*s %-*s State %s\n"
156#else
Denys Vlasenko327f5502013-11-29 16:45:45 +0100157# define FMT_NET_CONN_DATA "%s %6lu %6lu %-23s %-23s %-12s"
Denys Vlasenkodd88ba82010-10-27 13:10:29 +0200158# define FMT_NET_CONN_HEADER "\nProto Recv-Q Send-Q %-23s %-23s State %s\n"
159#endif
Denis Vlasenko418a7fb2007-05-15 23:57:46 +0000160
Denis Vlasenko6e69e422008-07-27 12:10:07 +0000161#define PROGNAME_WIDTH 20
162#define PROGNAME_WIDTH_STR "20"
163/* PROGNAME_WIDTH chars: 12345678901234567890 */
164#define PROGNAME_BANNER "PID/Program name "
165
166struct prg_node {
167 struct prg_node *next;
168 long inode;
169 char name[PROGNAME_WIDTH];
170};
171
172#define PRG_HASH_SIZE 211
173
Denis Vlasenko6e69e422008-07-27 12:10:07 +0000174struct globals {
Denys Vlasenko1f1492b2019-10-25 13:00:01 +0200175 smalluint flags;
Denis Vlasenko6e69e422008-07-27 12:10:07 +0000176#if ENABLE_FEATURE_NETSTAT_PRG
177 smallint prg_cache_loaded;
178 struct prg_node *prg_hash[PRG_HASH_SIZE];
179#endif
Denys Vlasenkodd88ba82010-10-27 13:10:29 +0200180#if ENABLE_FEATURE_NETSTAT_PRG
181 const char *progname_banner;
182#endif
183#if ENABLE_FEATURE_NETSTAT_WIDE
184 unsigned addr_width;
185#endif
Denis Vlasenko6e69e422008-07-27 12:10:07 +0000186};
187#define G (*ptr_to_globals)
188#define flags (G.flags )
Denis Vlasenko6e69e422008-07-27 12:10:07 +0000189#define prg_cache_loaded (G.prg_cache_loaded)
Denys Vlasenkodd88ba82010-10-27 13:10:29 +0200190#define prg_hash (G.prg_hash )
191#if ENABLE_FEATURE_NETSTAT_PRG
192# define progname_banner (G.progname_banner )
193#else
194# define progname_banner ""
195#endif
Denis Vlasenko6e69e422008-07-27 12:10:07 +0000196#define INIT_G() do { \
197 SET_PTR_TO_GLOBALS(xzalloc(sizeof(G))); \
198 flags = NETSTAT_CONNECTED | NETSTAT_ALLPROTO; \
Denis Vlasenko6e69e422008-07-27 12:10:07 +0000199} while (0)
200
201
202#if ENABLE_FEATURE_NETSTAT_PRG
203
204/* Deliberately truncating long to unsigned *int* */
205#define PRG_HASHIT(x) ((unsigned)(x) % PRG_HASH_SIZE)
206
Denis Vlasenko6e69e422008-07-27 12:10:07 +0000207static void prg_cache_add(long inode, char *name)
208{
209 unsigned hi = PRG_HASHIT(inode);
210 struct prg_node **pnp, *pn;
211
212 prg_cache_loaded = 2;
213 for (pnp = prg_hash + hi; (pn = *pnp) != NULL; pnp = &pn->next) {
214 if (pn->inode == inode) {
215 /* Some warning should be appropriate here
Denys Vlasenko60cb48c2013-01-14 15:57:44 +0100216 * as we got multiple processes for one i-node */
Denis Vlasenko6e69e422008-07-27 12:10:07 +0000217 return;
218 }
219 }
220 *pnp = xzalloc(sizeof(struct prg_node));
221 pn = *pnp;
222 pn->inode = inode;
223 safe_strncpy(pn->name, name, PROGNAME_WIDTH);
224}
225
226static const char *prg_cache_get(long inode)
227{
228 unsigned hi = PRG_HASHIT(inode);
229 struct prg_node *pn;
230
231 for (pn = prg_hash[hi]; pn; pn = pn->next)
232 if (pn->inode == inode)
233 return pn->name;
234 return "-";
235}
236
237#if ENABLE_FEATURE_CLEAN_UP
238static void prg_cache_clear(void)
239{
240 struct prg_node **pnp, *pn;
241
242 for (pnp = prg_hash; pnp < prg_hash + PRG_HASH_SIZE; pnp++) {
243 while ((pn = *pnp) != NULL) {
244 *pnp = pn->next;
245 free(pn);
246 }
247 }
248}
249#else
250#define prg_cache_clear() ((void)0)
251#endif
252
Denis Vlasenkocf8b1ef2008-07-27 14:15:42 +0000253static long extract_socket_inode(const char *lname)
254{
Denis Vlasenko6e69e422008-07-27 12:10:07 +0000255 long inode = -1;
256
Denys Vlasenko8dff01d2015-03-12 17:48:34 +0100257 if (is_prefixed_with(lname, "socket:[")) {
Denis Vlasenko6e69e422008-07-27 12:10:07 +0000258 /* "socket:[12345]", extract the "12345" as inode */
Denys Vlasenkodd88ba82010-10-27 13:10:29 +0200259 inode = bb_strtoul(lname + sizeof("socket:[")-1, (char**)&lname, 0);
Denis Vlasenko6e69e422008-07-27 12:10:07 +0000260 if (*lname != ']')
261 inode = -1;
Denys Vlasenko8dff01d2015-03-12 17:48:34 +0100262 } else if (is_prefixed_with(lname, "[0000]:")) {
Denis Vlasenko6e69e422008-07-27 12:10:07 +0000263 /* "[0000]:12345", extract the "12345" as inode */
Denys Vlasenkodd88ba82010-10-27 13:10:29 +0200264 inode = bb_strtoul(lname + sizeof("[0000]:")-1, NULL, 0);
Denis Vlasenko6e69e422008-07-27 12:10:07 +0000265 if (errno) /* not NUL terminated? */
266 inode = -1;
267 }
268
269#if 0 /* bb_strtol returns all-ones bit pattern on ERANGE anyway */
270 if (errno == ERANGE)
271 inode = -1;
272#endif
273 return inode;
274}
275
Denys Vlasenkodd88ba82010-10-27 13:10:29 +0200276static int FAST_FUNC add_to_prg_cache_if_socket(const char *fileName,
Denis Vlasenko6e69e422008-07-27 12:10:07 +0000277 struct stat *statbuf UNUSED_PARAM,
Bob Dunlop55a046b2010-10-27 02:12:29 +0200278 void *pid_slash_progname,
Denis Vlasenko6e69e422008-07-27 12:10:07 +0000279 int depth UNUSED_PARAM)
280{
281 char *linkname;
282 long inode;
283
284 linkname = xmalloc_readlink(fileName);
285 if (linkname != NULL) {
286 inode = extract_socket_inode(linkname);
287 free(linkname);
288 if (inode >= 0)
Bob Dunlop55a046b2010-10-27 02:12:29 +0200289 prg_cache_add(inode, (char *)pid_slash_progname);
Denis Vlasenko6e69e422008-07-27 12:10:07 +0000290 }
291 return TRUE;
292}
293
294static int FAST_FUNC dir_act(const char *fileName,
295 struct stat *statbuf UNUSED_PARAM,
296 void *userData UNUSED_PARAM,
297 int depth)
298{
Bob Dunlop55a046b2010-10-27 02:12:29 +0200299 const char *pid;
Denys Vlasenkodd88ba82010-10-27 13:10:29 +0200300 char *pid_slash_progname;
301 char proc_pid_fname[sizeof("/proc/%u/cmdline") + sizeof(long)*3];
Denis Vlasenko6e69e422008-07-27 12:10:07 +0000302 char cmdline_buf[512];
Denys Vlasenkodd88ba82010-10-27 13:10:29 +0200303 int n, len;
Denis Vlasenko6e69e422008-07-27 12:10:07 +0000304
305 if (depth == 0) /* "/proc" itself */
306 return TRUE; /* continue looking one level below /proc */
307
Bob Dunlop55a046b2010-10-27 02:12:29 +0200308 pid = fileName + sizeof("/proc/")-1; /* point after "/proc/" */
309 if (!isdigit(pid[0])) /* skip /proc entries which aren't processes */
Denis Vlasenko6e69e422008-07-27 12:10:07 +0000310 return SKIP;
311
Denys Vlasenkodd88ba82010-10-27 13:10:29 +0200312 len = snprintf(proc_pid_fname, sizeof(proc_pid_fname), "%s/cmdline", fileName);
313 n = open_read_close(proc_pid_fname, cmdline_buf, sizeof(cmdline_buf) - 1);
314 if (n < 0)
Denis Vlasenko6e69e422008-07-27 12:10:07 +0000315 return FALSE;
Denys Vlasenkodd88ba82010-10-27 13:10:29 +0200316 cmdline_buf[n] = '\0';
Denis Vlasenko6e69e422008-07-27 12:10:07 +0000317
Denys Vlasenkodd88ba82010-10-27 13:10:29 +0200318 /* go through all files in /proc/PID/fd and check whether they are sockets */
319 strcpy(proc_pid_fname + len - (sizeof("cmdline")-1), "fd");
Bob Dunlop55a046b2010-10-27 02:12:29 +0200320 pid_slash_progname = concat_path_file(pid, bb_basename(cmdline_buf)); /* "PID/argv0" */
Denys Vlasenkodd88ba82010-10-27 13:10:29 +0200321 n = recursive_action(proc_pid_fname,
322 ACTION_RECURSE | ACTION_QUIET,
323 add_to_prg_cache_if_socket,
324 NULL,
325 (void *)pid_slash_progname,
326 0);
Bob Dunlop55a046b2010-10-27 02:12:29 +0200327 free(pid_slash_progname);
Denis Vlasenko6e69e422008-07-27 12:10:07 +0000328
Denys Vlasenkodd88ba82010-10-27 13:10:29 +0200329 if (!n)
Bob Dunlop55a046b2010-10-27 02:12:29 +0200330 return FALSE; /* signal permissions error to caller */
Denis Vlasenko6e69e422008-07-27 12:10:07 +0000331
Bob Dunlop55a046b2010-10-27 02:12:29 +0200332 return SKIP; /* caller should not recurse further into this dir */
Denis Vlasenko6e69e422008-07-27 12:10:07 +0000333}
334
335static void prg_cache_load(void)
336{
337 int load_ok;
338
339 prg_cache_loaded = 1;
340 load_ok = recursive_action("/proc", ACTION_RECURSE | ACTION_QUIET,
341 NULL, dir_act, NULL, 0);
342 if (load_ok)
343 return;
344
345 if (prg_cache_loaded == 1)
James Byrne69374872019-07-02 11:35:03 +0200346 bb_simple_error_msg("can't scan /proc - are you root?");
Denis Vlasenko6e69e422008-07-27 12:10:07 +0000347 else
James Byrne69374872019-07-02 11:35:03 +0200348 bb_simple_error_msg("showing only processes with your user ID");
Denis Vlasenko6e69e422008-07-27 12:10:07 +0000349}
350
351#else
352
353#define prg_cache_clear() ((void)0)
Denis Vlasenko6e69e422008-07-27 12:10:07 +0000354
355#endif //ENABLE_FEATURE_NETSTAT_PRG
Denis Vlasenko418a7fb2007-05-15 23:57:46 +0000356
357
358#if ENABLE_FEATURE_IPV6
359static void build_ipv6_addr(char* local_addr, struct sockaddr_in6* localaddr)
360{
361 char addr6[INET6_ADDRSTRLEN];
362 struct in6_addr in6;
Denis Vlasenko4b924f32007-05-30 00:29:55 +0000363
Denis Vlasenko418a7fb2007-05-15 23:57:46 +0000364 sscanf(local_addr, "%08X%08X%08X%08X",
365 &in6.s6_addr32[0], &in6.s6_addr32[1],
366 &in6.s6_addr32[2], &in6.s6_addr32[3]);
367 inet_ntop(AF_INET6, &in6, addr6, sizeof(addr6));
Denys Vlasenko36659fd2010-02-05 14:40:23 +0100368 inet_pton(AF_INET6, addr6, &localaddr->sin6_addr);
Denis Vlasenko4b924f32007-05-30 00:29:55 +0000369
Denis Vlasenko418a7fb2007-05-15 23:57:46 +0000370 localaddr->sin6_family = AF_INET6;
371}
372#endif
373
Denis Vlasenko418a7fb2007-05-15 23:57:46 +0000374static void build_ipv4_addr(char* local_addr, struct sockaddr_in* localaddr)
Denis Vlasenko418a7fb2007-05-15 23:57:46 +0000375{
Denys Vlasenko36659fd2010-02-05 14:40:23 +0100376 sscanf(local_addr, "%X", &localaddr->sin_addr.s_addr);
377 localaddr->sin_family = AF_INET;
Denis Vlasenko418a7fb2007-05-15 23:57:46 +0000378}
379
Denis Vlasenko6d9ea242007-06-19 11:12:46 +0000380static const char *get_sname(int port, const char *proto, int numeric)
Eric Andersen31a0ece2001-10-31 11:00:46 +0000381{
Denis Vlasenko6d9ea242007-06-19 11:12:46 +0000382 if (!port)
383 return "*";
384 if (!numeric) {
Denis Vlasenko703e2022007-01-22 14:12:08 +0000385 struct servent *se = getservbyport(port, proto);
Eric Andersen31a0ece2001-10-31 11:00:46 +0000386 if (se)
Denis Vlasenko6d9ea242007-06-19 11:12:46 +0000387 return se->s_name;
Eric Andersen31a0ece2001-10-31 11:00:46 +0000388 }
Denis Vlasenko6d9ea242007-06-19 11:12:46 +0000389 /* hummm, we may return static buffer here!! */
390 return itoa(ntohs(port));
Eric Andersen31a0ece2001-10-31 11:00:46 +0000391}
392
Denis Vlasenko6d9ea242007-06-19 11:12:46 +0000393static char *ip_port_str(struct sockaddr *addr, int port, const char *proto, int numeric)
Eric Andersen31a0ece2001-10-31 11:00:46 +0000394{
Denis Vlasenko6d9ea242007-06-19 11:12:46 +0000395 char *host, *host_port;
Eric Andersencd8c4362001-11-10 11:22:46 +0000396
Denis Vlasenko2c7a1fd2008-07-27 17:24:19 +0000397 /* Code which used "*" for INADDR_ANY is removed: it's ambiguous
398 * in IPv6, while "0.0.0.0" is not. */
Denis Vlasenko4b924f32007-05-30 00:29:55 +0000399
Mark Marshall98592db2018-03-19 10:45:40 +0100400 host = NULL;
401 if (!numeric)
402 host = xmalloc_sockaddr2host_noport(addr);
403 if (!host)
404 host = xmalloc_sockaddr2dotted_noport(addr);
Denis Vlasenko6d9ea242007-06-19 11:12:46 +0000405
406 host_port = xasprintf("%s:%s", host, get_sname(htons(port), proto, numeric));
407 free(host);
408 return host_port;
Eric Andersen31a0ece2001-10-31 11:00:46 +0000409}
410
Denis Vlasenko2c7a1fd2008-07-27 17:24:19 +0000411struct inet_params {
412 int local_port, rem_port, state, uid;
Denys Vlasenko36659fd2010-02-05 14:40:23 +0100413 union {
414 struct sockaddr sa;
415 struct sockaddr_in sin;
Denis Vlasenko703e2022007-01-22 14:12:08 +0000416#if ENABLE_FEATURE_IPV6
Denys Vlasenko36659fd2010-02-05 14:40:23 +0100417 struct sockaddr_in6 sin6;
Eric Andersen51b8bd62002-07-03 11:46:38 +0000418#endif
Denys Vlasenko36659fd2010-02-05 14:40:23 +0100419 } localaddr, remaddr;
Denis Vlasenko2c7a1fd2008-07-27 17:24:19 +0000420 unsigned long rxq, txq, inode;
421};
Eric Andersen31a0ece2001-10-31 11:00:46 +0000422
Denis Vlasenko2c7a1fd2008-07-27 17:24:19 +0000423static int scan_inet_proc_line(struct inet_params *param, char *line)
424{
425 int num;
Denys Vlasenkodb9ccc52010-10-28 02:36:17 +0200426 /* IPv6 /proc files use 32-char hex representation
427 * of IPv6 address, followed by :PORT_IN_HEX
428 */
429 char local_addr[33], rem_addr[33]; /* 32 + 1 for NUL */
Eric Andersen31a0ece2001-10-31 11:00:46 +0000430
Eric Andersen31a0ece2001-10-31 11:00:46 +0000431 num = sscanf(line,
Denys Vlasenkodb9ccc52010-10-28 02:36:17 +0200432 "%*d: %32[0-9A-Fa-f]:%X "
433 "%32[0-9A-Fa-f]:%X %X "
Denis Vlasenko2c7a1fd2008-07-27 17:24:19 +0000434 "%lX:%lX %*X:%*X "
Denys Vlasenko327f5502013-11-29 16:45:45 +0100435 "%*X %d %*d %lu ",
Denis Vlasenko2c7a1fd2008-07-27 17:24:19 +0000436 local_addr, &param->local_port,
437 rem_addr, &param->rem_port, &param->state,
438 &param->txq, &param->rxq,
439 &param->uid, &param->inode);
440 if (num < 9) {
Denis Vlasenkoddc865f2007-12-26 21:49:33 +0000441 return 1; /* error */
Denis Vlasenkoabee3d02007-12-26 20:44:45 +0000442 }
443
Eric Andersen31a0ece2001-10-31 11:00:46 +0000444 if (strlen(local_addr) > 8) {
Denis Vlasenko703e2022007-01-22 14:12:08 +0000445#if ENABLE_FEATURE_IPV6
Denys Vlasenko36659fd2010-02-05 14:40:23 +0100446 build_ipv6_addr(local_addr, &param->localaddr.sin6);
447 build_ipv6_addr(rem_addr, &param->remaddr.sin6);
Eric Andersen51b8bd62002-07-03 11:46:38 +0000448#endif
Eric Andersen31a0ece2001-10-31 11:00:46 +0000449 } else {
Denys Vlasenko36659fd2010-02-05 14:40:23 +0100450 build_ipv4_addr(local_addr, &param->localaddr.sin);
451 build_ipv4_addr(rem_addr, &param->remaddr.sin);
Eric Andersen31a0ece2001-10-31 11:00:46 +0000452 }
Denis Vlasenko2c7a1fd2008-07-27 17:24:19 +0000453 return 0;
454}
Eric Andersen31a0ece2001-10-31 11:00:46 +0000455
Denis Vlasenko2c7a1fd2008-07-27 17:24:19 +0000456static void print_inet_line(struct inet_params *param,
457 const char *state_str, const char *proto, int is_connected)
458{
459 if ((is_connected && (flags & NETSTAT_CONNECTED))
460 || (!is_connected && (flags & NETSTAT_LISTENING))
Denis Vlasenko703e2022007-01-22 14:12:08 +0000461 ) {
Denis Vlasenko6d9ea242007-06-19 11:12:46 +0000462 char *l = ip_port_str(
Denys Vlasenko36659fd2010-02-05 14:40:23 +0100463 &param->localaddr.sa, param->local_port,
Denis Vlasenko2c7a1fd2008-07-27 17:24:19 +0000464 proto, flags & NETSTAT_NUMERIC);
Denis Vlasenko6d9ea242007-06-19 11:12:46 +0000465 char *r = ip_port_str(
Denys Vlasenko36659fd2010-02-05 14:40:23 +0100466 &param->remaddr.sa, param->rem_port,
Denis Vlasenko2c7a1fd2008-07-27 17:24:19 +0000467 proto, flags & NETSTAT_NUMERIC);
Denys Vlasenkodd88ba82010-10-27 13:10:29 +0200468 printf(FMT_NET_CONN_DATA,
469 proto, param->rxq, param->txq,
470 IF_FEATURE_NETSTAT_WIDE(G.addr_width,) l,
471 IF_FEATURE_NETSTAT_WIDE(G.addr_width,) r,
472 state_str);
Denis Vlasenko6e69e422008-07-27 12:10:07 +0000473#if ENABLE_FEATURE_NETSTAT_PRG
474 if (option_mask32 & OPT_prg)
Denis Vlasenko2c7a1fd2008-07-27 17:24:19 +0000475 printf("%."PROGNAME_WIDTH_STR"s", prg_cache_get(param->inode));
Denis Vlasenko6e69e422008-07-27 12:10:07 +0000476#endif
477 bb_putchar('\n');
Denis Vlasenko6d9ea242007-06-19 11:12:46 +0000478 free(l);
479 free(r);
Eric Andersen31a0ece2001-10-31 11:00:46 +0000480 }
481}
482
Denis Vlasenko2c7a1fd2008-07-27 17:24:19 +0000483static int FAST_FUNC tcp_do_one(char *line)
Eric Andersen31a0ece2001-10-31 11:00:46 +0000484{
Denis Vlasenko2c7a1fd2008-07-27 17:24:19 +0000485 struct inet_params param;
Eric Andersen31a0ece2001-10-31 11:00:46 +0000486
Denys Vlasenkodd88ba82010-10-27 13:10:29 +0200487 memset(&param, 0, sizeof(param));
Denis Vlasenko2c7a1fd2008-07-27 17:24:19 +0000488 if (scan_inet_proc_line(&param, line))
489 return 1;
Eric Andersen31a0ece2001-10-31 11:00:46 +0000490
Denis Vlasenko2c7a1fd2008-07-27 17:24:19 +0000491 print_inet_line(&param, tcp_state[param.state], "tcp", param.rem_port);
492 return 0;
493}
Eric Andersen31a0ece2001-10-31 11:00:46 +0000494
Denis Vlasenko703e2022007-01-22 14:12:08 +0000495#if ENABLE_FEATURE_IPV6
Denys Vlasenko36659fd2010-02-05 14:40:23 +0100496# define NOT_NULL_ADDR(A) ( \
497 ( (A.sa.sa_family == AF_INET6) \
498 && (A.sin6.sin6_addr.s6_addr32[0] | A.sin6.sin6_addr.s6_addr32[1] | \
499 A.sin6.sin6_addr.s6_addr32[2] | A.sin6.sin6_addr.s6_addr32[3]) \
500 ) || ( \
501 (A.sa.sa_family == AF_INET) \
502 && A.sin.sin_addr.s_addr != 0 \
503 ) \
Denis Vlasenko418a7fb2007-05-15 23:57:46 +0000504)
Eric Andersen51b8bd62002-07-03 11:46:38 +0000505#else
Denys Vlasenko45e97922010-02-19 08:29:32 +0100506# define NOT_NULL_ADDR(A) (A.sin.sin_addr.s_addr)
Eric Andersen51b8bd62002-07-03 11:46:38 +0000507#endif
Eric Andersen31a0ece2001-10-31 11:00:46 +0000508
Denis Vlasenko2c7a1fd2008-07-27 17:24:19 +0000509static int FAST_FUNC udp_do_one(char *line)
Eric Andersen31a0ece2001-10-31 11:00:46 +0000510{
Denis Vlasenko2c7a1fd2008-07-27 17:24:19 +0000511 int have_remaddr;
512 const char *state_str;
513 struct inet_params param;
Eric Andersen31a0ece2001-10-31 11:00:46 +0000514
Denys Vlasenkodd88ba82010-10-27 13:10:29 +0200515 memset(&param, 0, sizeof(param)); /* otherwise we display garbage IPv6 scope_ids */
Denis Vlasenko2c7a1fd2008-07-27 17:24:19 +0000516 if (scan_inet_proc_line(&param, line))
517 return 1;
Eric Andersen31a0ece2001-10-31 11:00:46 +0000518
Denis Vlasenko2c7a1fd2008-07-27 17:24:19 +0000519 state_str = "UNKNOWN";
520 switch (param.state) {
521 case TCP_ESTABLISHED:
522 state_str = "ESTABLISHED";
523 break;
524 case TCP_CLOSE:
525 state_str = "";
526 break;
Eric Andersen31a0ece2001-10-31 11:00:46 +0000527 }
528
Denys Vlasenko36659fd2010-02-05 14:40:23 +0100529 have_remaddr = NOT_NULL_ADDR(param.remaddr);
Denis Vlasenko2c7a1fd2008-07-27 17:24:19 +0000530 print_inet_line(&param, state_str, "udp", have_remaddr);
Denis Vlasenkoddc865f2007-12-26 21:49:33 +0000531 return 0;
Eric Andersen31a0ece2001-10-31 11:00:46 +0000532}
533
Denis Vlasenko2c7a1fd2008-07-27 17:24:19 +0000534static int FAST_FUNC raw_do_one(char *line)
535{
536 int have_remaddr;
537 struct inet_params param;
538
539 if (scan_inet_proc_line(&param, line))
540 return 1;
541
Denys Vlasenko36659fd2010-02-05 14:40:23 +0100542 have_remaddr = NOT_NULL_ADDR(param.remaddr);
Denis Vlasenko2c7a1fd2008-07-27 17:24:19 +0000543 print_inet_line(&param, itoa(param.state), "raw", have_remaddr);
544 return 0;
545}
546
547static int FAST_FUNC unix_do_one(char *line)
Eric Andersen31a0ece2001-10-31 11:00:46 +0000548{
Eric Andersen31a0ece2001-10-31 11:00:46 +0000549 unsigned long refcnt, proto, unix_flags;
Denis Vlasenko7221c8c2007-12-03 10:45:14 +0000550 unsigned long inode;
551 int type, state;
552 int num, path_ofs;
Denis Vlasenko7221c8c2007-12-03 10:45:14 +0000553 const char *ss_proto, *ss_state, *ss_type;
554 char ss_flags[32];
Eric Andersen31a0ece2001-10-31 11:00:46 +0000555
Denis Vlasenko7221c8c2007-12-03 10:45:14 +0000556 /* 2.6.15 may report lines like "... @/tmp/fam-user-^@^@^@^@^@^@^@..."
Denis Vlasenko474d1c52008-01-07 19:06:47 +0000557 * Other users report long lines filled by NUL bytes.
Denis Vlasenkoabee3d02007-12-26 20:44:45 +0000558 * (those ^@ are NUL bytes too). We see them as empty lines. */
Denis Vlasenko7221c8c2007-12-03 10:45:14 +0000559 if (!line[0])
Denis Vlasenkoddc865f2007-12-26 21:49:33 +0000560 return 0;
Denis Vlasenko7221c8c2007-12-03 10:45:14 +0000561
562 path_ofs = 0; /* paranoia */
Denis Vlasenko2c7a1fd2008-07-27 17:24:19 +0000563 num = sscanf(line, "%*p: %lX %lX %lX %X %X %lu %n",
564 &refcnt, &proto, &unix_flags, &type, &state, &inode, &path_ofs);
565 if (num < 6) {
Denis Vlasenkoddc865f2007-12-26 21:49:33 +0000566 return 1; /* error */
Eric Andersen31a0ece2001-10-31 11:00:46 +0000567 }
Denis Vlasenko703e2022007-01-22 14:12:08 +0000568 if ((flags & (NETSTAT_LISTENING|NETSTAT_CONNECTED)) != (NETSTAT_LISTENING|NETSTAT_CONNECTED)) {
Eric Andersen31a0ece2001-10-31 11:00:46 +0000569 if ((state == SS_UNCONNECTED) && (unix_flags & SO_ACCEPTCON)) {
Denis Vlasenko703e2022007-01-22 14:12:08 +0000570 if (!(flags & NETSTAT_LISTENING))
Denis Vlasenkoddc865f2007-12-26 21:49:33 +0000571 return 0;
Eric Andersen31a0ece2001-10-31 11:00:46 +0000572 } else {
Denis Vlasenko703e2022007-01-22 14:12:08 +0000573 if (!(flags & NETSTAT_CONNECTED))
Denis Vlasenkoddc865f2007-12-26 21:49:33 +0000574 return 0;
Eric Andersen31a0ece2001-10-31 11:00:46 +0000575 }
576 }
577
578 switch (proto) {
579 case 0:
580 ss_proto = "unix";
581 break;
Eric Andersen31a0ece2001-10-31 11:00:46 +0000582 default:
583 ss_proto = "??";
584 }
585
586 switch (type) {
587 case SOCK_STREAM:
588 ss_type = "STREAM";
589 break;
Eric Andersen31a0ece2001-10-31 11:00:46 +0000590 case SOCK_DGRAM:
591 ss_type = "DGRAM";
592 break;
Eric Andersen31a0ece2001-10-31 11:00:46 +0000593 case SOCK_RAW:
594 ss_type = "RAW";
595 break;
Eric Andersen31a0ece2001-10-31 11:00:46 +0000596 case SOCK_RDM:
597 ss_type = "RDM";
598 break;
Eric Andersen31a0ece2001-10-31 11:00:46 +0000599 case SOCK_SEQPACKET:
600 ss_type = "SEQPACKET";
601 break;
Eric Andersen31a0ece2001-10-31 11:00:46 +0000602 default:
603 ss_type = "UNKNOWN";
604 }
605
606 switch (state) {
607 case SS_FREE:
608 ss_state = "FREE";
609 break;
Eric Andersen31a0ece2001-10-31 11:00:46 +0000610 case SS_UNCONNECTED:
611 /*
612 * Unconnected sockets may be listening
613 * for something.
614 */
615 if (unix_flags & SO_ACCEPTCON) {
616 ss_state = "LISTENING";
617 } else {
618 ss_state = "";
619 }
620 break;
Eric Andersen31a0ece2001-10-31 11:00:46 +0000621 case SS_CONNECTING:
622 ss_state = "CONNECTING";
623 break;
Eric Andersen31a0ece2001-10-31 11:00:46 +0000624 case SS_CONNECTED:
625 ss_state = "CONNECTED";
626 break;
Eric Andersen31a0ece2001-10-31 11:00:46 +0000627 case SS_DISCONNECTING:
628 ss_state = "DISCONNECTING";
629 break;
Eric Andersen31a0ece2001-10-31 11:00:46 +0000630 default:
631 ss_state = "UNKNOWN";
632 }
633
634 strcpy(ss_flags, "[ ");
635 if (unix_flags & SO_ACCEPTCON)
636 strcat(ss_flags, "ACC ");
637 if (unix_flags & SO_WAITDATA)
638 strcat(ss_flags, "W ");
639 if (unix_flags & SO_NOSPACE)
640 strcat(ss_flags, "N ");
Eric Andersen31a0ece2001-10-31 11:00:46 +0000641 strcat(ss_flags, "]");
642
Denys Vlasenko327f5502013-11-29 16:45:45 +0100643 printf("%-5s %-6lu %-11s %-10s %-13s %6lu ",
Denis Vlasenkod3c042f2007-12-30 01:59:53 +0000644 ss_proto, refcnt, ss_flags, ss_type, ss_state, inode
645 );
646
Denis Vlasenko6e69e422008-07-27 12:10:07 +0000647#if ENABLE_FEATURE_NETSTAT_PRG
648 if (option_mask32 & OPT_prg)
649 printf("%-"PROGNAME_WIDTH_STR"s", prg_cache_get(inode));
650#endif
651
Denis Vlasenkod3c042f2007-12-30 01:59:53 +0000652 /* TODO: currently we stop at first NUL byte. Is it a problem? */
653 line += path_ofs;
Ron Yorston8ec1ff32015-03-12 20:18:51 +0100654 chomp(line);
Denis Vlasenkod3c042f2007-12-30 01:59:53 +0000655 while (*line)
656 fputc_printable(*line++, stdout);
657 bb_putchar('\n');
Denis Vlasenkoddc865f2007-12-26 21:49:33 +0000658 return 0;
Eric Andersen31a0ece2001-10-31 11:00:46 +0000659}
660
Denis Vlasenko2c7a1fd2008-07-27 17:24:19 +0000661static void do_info(const char *file, int FAST_FUNC (*proc)(char *))
Eric Andersen31a0ece2001-10-31 11:00:46 +0000662{
Denis Vlasenko7221c8c2007-12-03 10:45:14 +0000663 int lnr;
Eric Andersen31a0ece2001-10-31 11:00:46 +0000664 FILE *procinfo;
Denis Vlasenko7221c8c2007-12-03 10:45:14 +0000665 char *buffer;
Eric Andersen31a0ece2001-10-31 11:00:46 +0000666
Denis Vlasenko2c7a1fd2008-07-27 17:24:19 +0000667 /* _stdin is just to save "r" param */
668 procinfo = fopen_or_warn_stdin(file);
Eric Andersen31a0ece2001-10-31 11:00:46 +0000669 if (procinfo == NULL) {
Denis Vlasenko703e2022007-01-22 14:12:08 +0000670 return;
Eric Andersen31a0ece2001-10-31 11:00:46 +0000671 }
Denis Vlasenko7221c8c2007-12-03 10:45:14 +0000672 lnr = 0;
Denis Vlasenko2c7a1fd2008-07-27 17:24:19 +0000673 /* Why xmalloc_fgets_str? because it doesn't stop on NULs */
Denis Vlasenkoabee3d02007-12-26 20:44:45 +0000674 while ((buffer = xmalloc_fgets_str(procinfo, "\n")) != NULL) {
Denis Vlasenko2c7a1fd2008-07-27 17:24:19 +0000675 /* line 0 is skipped */
676 if (lnr && proc(buffer))
677 bb_error_msg("%s: bogus data on line %d", file, lnr + 1);
678 lnr++;
Denis Vlasenkoabee3d02007-12-26 20:44:45 +0000679 free(buffer);
680 }
Denis Vlasenko703e2022007-01-22 14:12:08 +0000681 fclose(procinfo);
Eric Andersen31a0ece2001-10-31 11:00:46 +0000682}
683
Denis Vlasenko9b49a5e2007-10-11 10:05:36 +0000684int netstat_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
Denis Vlasenkoa60f84e2008-07-05 09:18:54 +0000685int netstat_main(int argc UNUSED_PARAM, char **argv)
Eric Andersen31a0ece2001-10-31 11:00:46 +0000686{
Denis Vlasenko67b23e62006-10-03 21:00:06 +0000687 unsigned opt;
Denis Vlasenko754a88f2006-09-22 16:02:40 +0000688
Denis Vlasenko6e69e422008-07-27 12:10:07 +0000689 INIT_G();
690
Denis Vlasenko754a88f2006-09-22 16:02:40 +0000691 /* Option string must match NETSTAT_xxx constants */
Denis Vlasenkofe7cd642007-08-18 15:32:12 +0000692 opt = getopt32(argv, NETSTAT_OPTS);
Bob Dunlop55a046b2010-10-27 02:12:29 +0200693 if (opt & OPT_sock_listen) { // -l
Denis Vlasenko754a88f2006-09-22 16:02:40 +0000694 flags &= ~NETSTAT_CONNECTED;
695 flags |= NETSTAT_LISTENING;
696 }
Bob Dunlop55a046b2010-10-27 02:12:29 +0200697 if (opt & OPT_sock_all) flags |= NETSTAT_LISTENING | NETSTAT_CONNECTED; // -a
698 //if (opt & OPT_extended) // -e
699 if (opt & OPT_noresolve) flags |= NETSTAT_NUMERIC; // -n
700 //if (opt & OPT_sock_tcp) // -t: NETSTAT_TCP
701 //if (opt & OPT_sock_udp) // -u: NETSTAT_UDP
702 //if (opt & OPT_sock_raw) // -w: NETSTAT_RAW
703 //if (opt & OPT_sock_unix) // -x: NETSTAT_UNIX
Denis Vlasenko703e2022007-01-22 14:12:08 +0000704#if ENABLE_ROUTE
Bob Dunlop55a046b2010-10-27 02:12:29 +0200705 if (opt & OPT_route) { // -r
Denis Vlasenko703e2022007-01-22 14:12:08 +0000706 bb_displayroutes(flags & NETSTAT_NUMERIC, !(opt & OPT_extended));
Eric Andersenc7bda1c2004-03-15 08:29:22 +0000707 return 0;
Eric Andersenc7bda1c2004-03-15 08:29:22 +0000708 }
Bob Dunlop55a046b2010-10-27 02:12:29 +0200709#endif
Denys Vlasenkodd88ba82010-10-27 13:10:29 +0200710#if ENABLE_FEATURE_NETSTAT_WIDE
711 G.addr_width = ADDR_NORMAL_WIDTH;
Denis Vlasenko6e69e422008-07-27 12:10:07 +0000712 if (opt & OPT_wide) { // -W
Denys Vlasenkodd88ba82010-10-27 13:10:29 +0200713 G.addr_width = ADDR_WIDE;
Denis Vlasenko418a7fb2007-05-15 23:57:46 +0000714 }
Denys Vlasenkodd88ba82010-10-27 13:10:29 +0200715#endif
Denis Vlasenko6e69e422008-07-27 12:10:07 +0000716#if ENABLE_FEATURE_NETSTAT_PRG
Denys Vlasenkodd88ba82010-10-27 13:10:29 +0200717 progname_banner = "";
Denis Vlasenko6e69e422008-07-27 12:10:07 +0000718 if (opt & OPT_prg) { // -p
Denys Vlasenkodd88ba82010-10-27 13:10:29 +0200719 progname_banner = PROGNAME_BANNER;
Denis Vlasenko6e69e422008-07-27 12:10:07 +0000720 prg_cache_load();
721 }
722#endif
Denis Vlasenko418a7fb2007-05-15 23:57:46 +0000723
Denis Vlasenko754a88f2006-09-22 16:02:40 +0000724 opt &= NETSTAT_ALLPROTO;
725 if (opt) {
726 flags &= ~NETSTAT_ALLPROTO;
727 flags |= opt;
Eric Andersen31a0ece2001-10-31 11:00:46 +0000728 }
Denis Vlasenko754a88f2006-09-22 16:02:40 +0000729 if (flags & (NETSTAT_TCP|NETSTAT_UDP|NETSTAT_RAW)) {
Denys Vlasenkofb132e42010-10-29 11:46:52 +0200730 printf("Active Internet connections "); /* xxx */
Eric Andersen31a0ece2001-10-31 11:00:46 +0000731
Denis Vlasenko703e2022007-01-22 14:12:08 +0000732 if ((flags & (NETSTAT_LISTENING|NETSTAT_CONNECTED)) == (NETSTAT_LISTENING|NETSTAT_CONNECTED))
Eric Andersen31a0ece2001-10-31 11:00:46 +0000733 printf("(servers and established)");
Denis Vlasenko703e2022007-01-22 14:12:08 +0000734 else if (flags & NETSTAT_LISTENING)
735 printf("(only servers)");
736 else
737 printf("(w/o servers)");
Denys Vlasenkodd88ba82010-10-27 13:10:29 +0200738 printf(FMT_NET_CONN_HEADER,
739 IF_FEATURE_NETSTAT_WIDE(G.addr_width,) "Local Address",
740 IF_FEATURE_NETSTAT_WIDE(G.addr_width,) "Foreign Address",
741 progname_banner
742 );
Eric Andersen31a0ece2001-10-31 11:00:46 +0000743 }
Denis Vlasenko2c7a1fd2008-07-27 17:24:19 +0000744 if (flags & NETSTAT_TCP) {
745 do_info("/proc/net/tcp", tcp_do_one);
Denis Vlasenko703e2022007-01-22 14:12:08 +0000746#if ENABLE_FEATURE_IPV6
Denis Vlasenko2c7a1fd2008-07-27 17:24:19 +0000747 do_info("/proc/net/tcp6", tcp_do_one);
Eric Andersen51b8bd62002-07-03 11:46:38 +0000748#endif
Denis Vlasenko2c7a1fd2008-07-27 17:24:19 +0000749 }
750 if (flags & NETSTAT_UDP) {
751 do_info("/proc/net/udp", udp_do_one);
Denis Vlasenko703e2022007-01-22 14:12:08 +0000752#if ENABLE_FEATURE_IPV6
Denis Vlasenko2c7a1fd2008-07-27 17:24:19 +0000753 do_info("/proc/net/udp6", udp_do_one);
Eric Andersen51b8bd62002-07-03 11:46:38 +0000754#endif
Denis Vlasenko2c7a1fd2008-07-27 17:24:19 +0000755 }
756 if (flags & NETSTAT_RAW) {
757 do_info("/proc/net/raw", raw_do_one);
Denis Vlasenko703e2022007-01-22 14:12:08 +0000758#if ENABLE_FEATURE_IPV6
Denis Vlasenko2c7a1fd2008-07-27 17:24:19 +0000759 do_info("/proc/net/raw6", raw_do_one);
Eric Andersen51b8bd62002-07-03 11:46:38 +0000760#endif
Denis Vlasenko2c7a1fd2008-07-27 17:24:19 +0000761 }
Denis Vlasenko703e2022007-01-22 14:12:08 +0000762 if (flags & NETSTAT_UNIX) {
Eric Andersen31a0ece2001-10-31 11:00:46 +0000763 printf("Active UNIX domain sockets ");
Denis Vlasenko703e2022007-01-22 14:12:08 +0000764 if ((flags & (NETSTAT_LISTENING|NETSTAT_CONNECTED)) == (NETSTAT_LISTENING|NETSTAT_CONNECTED))
Eric Andersen31a0ece2001-10-31 11:00:46 +0000765 printf("(servers and established)");
Denis Vlasenko703e2022007-01-22 14:12:08 +0000766 else if (flags & NETSTAT_LISTENING)
767 printf("(only servers)");
768 else
769 printf("(w/o servers)");
Denys Vlasenkodd88ba82010-10-27 13:10:29 +0200770 printf("\nProto RefCnt Flags Type State I-Node %sPath\n", progname_banner);
Denis Vlasenko2c7a1fd2008-07-27 17:24:19 +0000771 do_info("/proc/net/unix", unix_do_one);
Eric Andersen31a0ece2001-10-31 11:00:46 +0000772 }
Denis Vlasenko6e69e422008-07-27 12:10:07 +0000773 prg_cache_clear();
Eric Andersen31a0ece2001-10-31 11:00:46 +0000774 return 0;
775}