Apple-2gs-SW/hush
1
0
Fork 0
mirror of https://github.com/sheumann/hush.git synced 2024-12-28 07:30:23 +00:00
Code Issues Projects Releases Wiki Activity

netstat: introduce -W: wide, ipv6-friendly output

Browse Source 
netstat: shrink by ~500 bytes
(patch by Cristian Ionescu-Idbohrn <cristian.ionescu-idbohrn@axis.com>)
netstat: fix for bogus state value for raw sockets
This commit is contained in:
Denis Vlasenko 2007-05-15 23:57:46 +00:00
parent c2b3e370d6
commit 418a7fb29b
3 changed files with 175 additions and 178 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

26
include/usage.h
View File

@ -2416,21 +2416,23 @@
#endif #endif
#define netstat_trivial_usage \ #define netstat_trivial_usage \
"[-laenrtuwx]" "[-laentuwxr"USE_FEATURE_NETSTAT_WIDE("W")"]"
#define netstat_full_usage \ #define netstat_full_usage \
"Display networking information" \ "Display networking information" \
"\n\nOptions:\n" \ "\n\nOptions:" \
" -l Display listening server sockets\n" \ "\n -l Display listening server sockets" \
" -a Display all sockets (default: connected)\n" \ "\n -a Display all sockets (default: connected)" \
" -e Display other/more information\n" \ "\n -e Display other/more information" \
" -n Don't resolve names\n" \ "\n -n Don't resolve names" \
" -r Display routing table\n" \ "\n -t Tcp sockets" \
" -t Tcp sockets\n" \ "\n -u Udp sockets" \
" -u Udp sockets\n" \ "\n -w Raw sockets" \
" -w Raw sockets\n" \ "\n -x Unix sockets" \
" -x Unix sockets" "\n -r Display routing table" \
USE_FEATURE_NETSTAT_WIDE( \
"\n -W Display with no column truncation" \
)
#define nice_trivial_usage \ #define nice_trivial_usage \
"[-n ADJUST] [COMMAND [ARG] ...]" "[-n ADJUST] [COMMAND [ARG] ...]"

8
networking/Config.in
View File

@ -499,6 +499,14 @@ config NETSTAT
help help
netstat prints information about the Linux networking subsystem. netstat prints information about the Linux networking subsystem.
config FEATURE_NETSTAT_WIDE
bool " Enable wide netstat output"
default n
depends on NETSTAT
help
Add support for wide columns. Useful when displaying IPv6 addresses
(-W option).
config NSLOOKUP config NSLOOKUP
bool "nslookup" bool "nslookup"
default n default n

253
networking/netstat.c
View File

@ -14,6 +14,13 @@
#include "busybox.h" #include "busybox.h"
#include "inet_common.h" #include "inet_common.h"
enum {
OPT_extended = 0x4,
OPT_showroute = 0x100,
OPT_widedisplay = 0x200 * ENABLE_FEATURE_NETSTAT_WIDE,
};
# define NETSTAT_OPTS "laentuwxr"USE_FEATURE_NETSTAT_WIDE("W")
#define NETSTAT_CONNECTED 0x01 #define NETSTAT_CONNECTED 0x01
#define NETSTAT_LISTENING 0x02 #define NETSTAT_LISTENING 0x02
#define NETSTAT_NUMERIC 0x04 #define NETSTAT_NUMERIC 0x04
@ -24,7 +31,7 @@
#define NETSTAT_UNIX 0x80 #define NETSTAT_UNIX 0x80
#define NETSTAT_ALLPROTO (NETSTAT_TCP|NETSTAT_UDP|NETSTAT_RAW|NETSTAT_UNIX) #define NETSTAT_ALLPROTO (NETSTAT_TCP|NETSTAT_UDP|NETSTAT_RAW|NETSTAT_UNIX)
static int flags = NETSTAT_CONNECTED | NETSTAT_ALLPROTO; static smallint flags = NETSTAT_CONNECTED | NETSTAT_ALLPROTO;
enum { enum {
TCP_ESTABLISHED = 1, TCP_ESTABLISHED = 1,
@ -68,6 +75,51 @@ typedef enum {
#define SO_WAITDATA (1<<17) /* wait data to read */ #define SO_WAITDATA (1<<17) /* wait data to read */
#define SO_NOSPACE (1<<18) /* no space to write */ #define SO_NOSPACE (1<<18) /* no space to write */
/* Standard printout size */
#define PRINT_IP_MAX_SIZE 23
#define PRINT_NET_CONN "%s %6ld %6ld %-23s %-23s %-12s\n"
#define PRINT_NET_CONN_HEADER "\nProto Recv-Q Send-Q %-23s %-23s State\n"
/* When there are IPv6 connections the IPv6 addresses will be
* truncated to none-recognition. The '-W' option makes the
* address columns wide enough to accomodate for longest possible
* IPv6 addresses, i.e. addresses of the form
* xxxx:xxxx:xxxx:xxxx:xxxx:xxxx:ddd.ddd.ddd.ddd
*/
#define PRINT_IP_MAX_SIZE_WIDE 51 /* INET6_ADDRSTRLEN + 5 for the port number */
#define PRINT_NET_CONN_WIDE "%s %6ld %6ld %-51s %-51s %-12s\n"
#define PRINT_NET_CONN_HEADER_WIDE "\nProto Recv-Q Send-Q %-51s %-51s State\n"
static const char *net_conn_line = PRINT_NET_CONN;
#if ENABLE_FEATURE_IPV6
static void build_ipv6_addr(char* local_addr, struct sockaddr_in6* localaddr)
{
char addr6[INET6_ADDRSTRLEN];
struct in6_addr in6;
sscanf(local_addr, "%08X%08X%08X%08X",
&in6.s6_addr32[0], &in6.s6_addr32[1],
&in6.s6_addr32[2], &in6.s6_addr32[3]);
inet_ntop(AF_INET6, &in6, addr6, sizeof(addr6));
inet_pton(AF_INET6, addr6, (struct sockaddr *) &localaddr->sin6_addr);
localaddr->sin6_family = AF_INET6;
}
#endif
#if ENABLE_FEATURE_IPV6
static void build_ipv4_addr(char* local_addr, struct sockaddr_in6* localaddr)
#else
static void build_ipv4_addr(char* local_addr, struct sockaddr_in* localaddr)
#endif
{
sscanf(local_addr, "%X",
&((struct sockaddr_in *) localaddr)->sin_addr.s_addr);
((struct sockaddr *) localaddr)->sa_family = AF_INET;
}
static const char *get_sname(int port, const char *proto, int num) static const char *get_sname(int port, const char *proto, int num)
{ {
/* hummm, we return static buffer here!! */ /* hummm, we return static buffer here!! */
@ -86,7 +138,10 @@ static const char *get_sname(int port, const char *proto, int num)
static void snprint_ip_port(char *ip_port, int size, struct sockaddr *addr, int port, const char *proto, int numeric) static void snprint_ip_port(char *ip_port, int size, struct sockaddr *addr, int port, const char *proto, int numeric)
{ {
const char *port_name; const char *port_name;
int max_len;
int port_name_len;
// TODO: replace by xmalloc_sockaddr2host?
#if ENABLE_FEATURE_IPV6 #if ENABLE_FEATURE_IPV6
if (addr->sa_family == AF_INET6) { if (addr->sa_family == AF_INET6) {
INET6_rresolve(ip_port, size, (struct sockaddr_in6 *)addr, INET6_rresolve(ip_port, size, (struct sockaddr_in6 *)addr,
@ -99,23 +154,25 @@ static void snprint_ip_port(char *ip_port, int size, struct sockaddr *addr, int
0xffffffff); 0xffffffff);
} }
port_name = get_sname(htons(port), proto, numeric); port_name = get_sname(htons(port), proto, numeric);
if ((strlen(ip_port) + strlen(port_name)) > 22)
ip_port[22 - strlen(port_name)] = '\0'; max_len = (option_mask32 & OPT_widedisplay)
? (PRINT_IP_MAX_SIZE_WIDE - 1)
: (PRINT_IP_MAX_SIZE - 1);
port_name_len = strlen(port_name);
if ((strlen(ip_port) + port_name_len) > max_len)
ip_port[max_len - port_name_len] = '\0';
ip_port += strlen(ip_port); ip_port += strlen(ip_port);
strcat(ip_port, ":"); *ip_port++ = ':';
strcat(ip_port, port_name); strcpy(ip_port, port_name);
} }
static void tcp_do_one(int lnr, const char *line) static void tcp_do_one(int lnr, const char *line)
{ {
char local_addr[64], rem_addr[64]; char local_addr[64], rem_addr[64];
const char *state_str;
char more[512]; char more[512];
int num, local_port, rem_port, d, state, timer_run, uid, timeout; int num, local_port, rem_port, d, state, timer_run, uid, timeout;
#if ENABLE_FEATURE_IPV6 #if ENABLE_FEATURE_IPV6
struct sockaddr_in6 localaddr, remaddr; struct sockaddr_in6 localaddr, remaddr;
char addr6[INET6_ADDRSTRLEN];
struct in6_addr in6;
#else #else
struct sockaddr_in localaddr, remaddr; struct sockaddr_in localaddr, remaddr;
#endif #endif
@ -133,46 +190,30 @@ static void tcp_do_one(int lnr, const char *line)
if (strlen(local_addr) > 8) { if (strlen(local_addr) > 8) {
#if ENABLE_FEATURE_IPV6 #if ENABLE_FEATURE_IPV6
sscanf(local_addr, "%08X%08X%08X%08X", build_ipv6_addr(local_addr, &localaddr);
&in6.s6_addr32[0], &in6.s6_addr32[1], build_ipv6_addr(rem_addr, &remaddr);
&in6.s6_addr32[2], &in6.s6_addr32[3]);
inet_ntop(AF_INET6, &in6, addr6, sizeof(addr6));
inet_pton(AF_INET6, addr6, (struct sockaddr *) &localaddr.sin6_addr);
sscanf(rem_addr, "%08X%08X%08X%08X",
&in6.s6_addr32[0], &in6.s6_addr32[1],
&in6.s6_addr32[2], &in6.s6_addr32[3]);
inet_ntop(AF_INET6, &in6, addr6, sizeof(addr6));
inet_pton(AF_INET6, addr6, (struct sockaddr *) &remaddr.sin6_addr);
localaddr.sin6_family = AF_INET6;
remaddr.sin6_family = AF_INET6;
#endif #endif
} else { } else {
sscanf(local_addr, "%X", build_ipv4_addr(local_addr, &localaddr);
&((struct sockaddr_in *) &localaddr)->sin_addr.s_addr); build_ipv4_addr(rem_addr, &remaddr);
sscanf(rem_addr, "%X",
&((struct sockaddr_in *) &remaddr)->sin_addr.s_addr);
((struct sockaddr *) &localaddr)->sa_family = AF_INET;
((struct sockaddr *) &remaddr)->sa_family = AF_INET;
} }
if (num < 10) { if (num < 10) {
bb_error_msg("warning, got bogus tcp line"); bb_error_msg("warning, got bogus tcp line");
return; return;
} }
state_str = tcp_state[state];
if ((rem_port && (flags & NETSTAT_CONNECTED)) if ((rem_port && (flags & NETSTAT_CONNECTED))
|| (!rem_port && (flags & NETSTAT_LISTENING)) || (!rem_port && (flags & NETSTAT_LISTENING))
) { ) {
snprint_ip_port(local_addr, sizeof(local_addr), snprint_ip_port(local_addr, sizeof(local_addr),
(struct sockaddr *) &localaddr, local_port, (struct sockaddr *) &localaddr, local_port,
"tcp", flags & NETSTAT_NUMERIC); "tcp", flags & NETSTAT_NUMERIC);
snprint_ip_port(rem_addr, sizeof(rem_addr), snprint_ip_port(rem_addr, sizeof(rem_addr),
(struct sockaddr *) &remaddr, rem_port, (struct sockaddr *) &remaddr, rem_port,
"tcp", flags & NETSTAT_NUMERIC); "tcp", flags & NETSTAT_NUMERIC);
printf(net_conn_line,
printf("tcp %6ld %6ld %-23s %-23s %-12s\n", "tcp", rxq, txq, local_addr, rem_addr, tcp_state[state]);
rxq, txq, local_addr, rem_addr, state_str);
} }
} }
@ -184,8 +225,6 @@ static void udp_do_one(int lnr, const char *line)
int num, local_port, rem_port, d, state, timer_run, uid, timeout; int num, local_port, rem_port, d, state, timer_run, uid, timeout;
#if ENABLE_FEATURE_IPV6 #if ENABLE_FEATURE_IPV6
struct sockaddr_in6 localaddr, remaddr; struct sockaddr_in6 localaddr, remaddr;
char addr6[INET6_ADDRSTRLEN];
struct in6_addr in6;
#else #else
struct sockaddr_in localaddr, remaddr; struct sockaddr_in localaddr, remaddr;
#endif #endif
@ -204,26 +243,12 @@ static void udp_do_one(int lnr, const char *line)
if (strlen(local_addr) > 8) { if (strlen(local_addr) > 8) {
#if ENABLE_FEATURE_IPV6 #if ENABLE_FEATURE_IPV6
/* Demangle what the kernel gives us */ /* Demangle what the kernel gives us */
sscanf(local_addr, "%08X%08X%08X%08X", build_ipv6_addr(local_addr, &localaddr);
&in6.s6_addr32[0], &in6.s6_addr32[1], build_ipv6_addr(rem_addr, &remaddr);
&in6.s6_addr32[2], &in6.s6_addr32[3]);
inet_ntop(AF_INET6, &in6, addr6, sizeof(addr6));
inet_pton(AF_INET6, addr6, (struct sockaddr *) &localaddr.sin6_addr);
sscanf(rem_addr, "%08X%08X%08X%08X",
&in6.s6_addr32[0], &in6.s6_addr32[1],
&in6.s6_addr32[2], &in6.s6_addr32[3]);
inet_ntop(AF_INET6, &in6, addr6, sizeof(addr6));
inet_pton(AF_INET6, addr6, (struct sockaddr *) &remaddr.sin6_addr);
localaddr.sin6_family = AF_INET6;
remaddr.sin6_family = AF_INET6;
#endif #endif
} else { } else {
sscanf(local_addr, "%X", build_ipv4_addr(local_addr, &localaddr);
&((struct sockaddr_in *) &localaddr)->sin_addr.s_addr); build_ipv4_addr(rem_addr, &remaddr);
sscanf(rem_addr, "%X",
&((struct sockaddr_in *) &remaddr)->sin_addr.s_addr);
((struct sockaddr *) &localaddr)->sa_family = AF_INET;
((struct sockaddr *) &remaddr)->sa_family = AF_INET;
} }
if (num < 10) { if (num < 10) {
@ -234,52 +259,51 @@ static void udp_do_one(int lnr, const char *line)
case TCP_ESTABLISHED: case TCP_ESTABLISHED:
state_str = "ESTABLISHED"; state_str = "ESTABLISHED";
break; break;
case TCP_CLOSE: case TCP_CLOSE:
state_str = ""; state_str = "";
break; break;
default: default:
state_str = "UNKNOWN"; state_str = "UNKNOWN";
break; break;
} }
#if ENABLE_FEATURE_IPV6 #if ENABLE_FEATURE_IPV6
# define notnull(A) (((A.sin6_family == AF_INET6) && \ # define notnull(A) ( \
((A.sin6_addr.s6_addr32[0]) || \ ( (A.sin6_family == AF_INET6) \
(A.sin6_addr.s6_addr32[1]) || \ && (A.sin6_addr.s6_addr32[0] | A.sin6_addr.s6_addr32[1] | \
(A.sin6_addr.s6_addr32[2]) || \ A.sin6_addr.s6_addr32[2] | A.sin6_addr.s6_addr32[3]) \
(A.sin6_addr.s6_addr32[3]))) || \ ) || ( \
((A.sin6_family == AF_INET) && \ (A.sin6_family == AF_INET) \
((struct sockaddr_in *) &A)->sin_addr.s_addr)) && ((struct sockaddr_in*)&A)->sin_addr.s_addr \
) \
)
#else #else
# define notnull(A) (A.sin_addr.s_addr) # define notnull(A) (A.sin_addr.s_addr)
#endif #endif
if ((notnull(remaddr) && (flags & NETSTAT_CONNECTED)) {
|| (!notnull(remaddr) && (flags & NETSTAT_LISTENING)) int have_remaddr = notnull(remaddr);
if ((have_remaddr && (flags & NETSTAT_CONNECTED))
|| (!have_remaddr && (flags & NETSTAT_LISTENING))
) { ) {
snprint_ip_port(local_addr, sizeof(local_addr), snprint_ip_port(local_addr, sizeof(local_addr),
(struct sockaddr *) &localaddr, local_port, (struct sockaddr *) &localaddr, local_port,
"udp", flags & NETSTAT_NUMERIC); "udp", flags & NETSTAT_NUMERIC);
snprint_ip_port(rem_addr, sizeof(rem_addr), snprint_ip_port(rem_addr, sizeof(rem_addr),
(struct sockaddr *) &remaddr, rem_port, (struct sockaddr *) &remaddr, rem_port,
"udp", flags & NETSTAT_NUMERIC); "udp", flags & NETSTAT_NUMERIC);
printf(net_conn_line,
printf("udp %6ld %6ld %-23s %-23s %-12s\n", "udp", rxq, txq, local_addr, rem_addr, state_str);
rxq, txq, local_addr, rem_addr, state_str); }
} }
} }
static void raw_do_one(int lnr, const char *line) static void raw_do_one(int lnr, const char *line)
{ {
char local_addr[64], rem_addr[64]; char local_addr[64], rem_addr[64];
char *state_str, more[512]; char more[512];
int num, local_port, rem_port, d, state, timer_run, uid, timeout; int num, local_port, rem_port, d, state, timer_run, uid, timeout;
#if ENABLE_FEATURE_IPV6 #if ENABLE_FEATURE_IPV6
struct sockaddr_in6 localaddr, remaddr; struct sockaddr_in6 localaddr, remaddr;
char addr6[INET6_ADDRSTRLEN];
struct in6_addr in6;
#else #else
struct sockaddr_in localaddr, remaddr; struct sockaddr_in localaddr, remaddr;
#endif #endif
@ -297,66 +321,40 @@ static void raw_do_one(int lnr, const char *line)
if (strlen(local_addr) > 8) { if (strlen(local_addr) > 8) {
#if ENABLE_FEATURE_IPV6 #if ENABLE_FEATURE_IPV6
sscanf(local_addr, "%08X%08X%08X%08X", build_ipv6_addr(local_addr, &localaddr);
&in6.s6_addr32[0], &in6.s6_addr32[1], build_ipv6_addr(rem_addr, &remaddr);
&in6.s6_addr32[2], &in6.s6_addr32[3]);
inet_ntop(AF_INET6, &in6, addr6, sizeof(addr6));
inet_pton(AF_INET6, addr6, (struct sockaddr *) &localaddr.sin6_addr);
sscanf(rem_addr, "%08X%08X%08X%08X",
&in6.s6_addr32[0], &in6.s6_addr32[1],
&in6.s6_addr32[2], &in6.s6_addr32[3]);
inet_ntop(AF_INET6, &in6, addr6, sizeof(addr6));
inet_pton(AF_INET6, addr6, (struct sockaddr *) &remaddr.sin6_addr);
localaddr.sin6_family = AF_INET6;
remaddr.sin6_family = AF_INET6;
#endif #endif
} else { } else {
sscanf(local_addr, "%X", build_ipv4_addr(local_addr, &localaddr);
&((struct sockaddr_in *) &localaddr)->sin_addr.s_addr); build_ipv4_addr(rem_addr, &remaddr);
sscanf(rem_addr, "%X",
&((struct sockaddr_in *) &remaddr)->sin_addr.s_addr);
((struct sockaddr *) &localaddr)->sa_family = AF_INET;
((struct sockaddr *) &remaddr)->sa_family = AF_INET;
} }
if (num < 10) { if (num < 10) {
bb_error_msg("warning, got bogus raw line"); bb_error_msg("warning, got bogus raw line");
return; return;
} }
state_str = itoa(state);
#if ENABLE_FEATURE_IPV6 {
# define notnull(A) (((A.sin6_family == AF_INET6) && \ int have_remaddr = notnull(remaddr);
((A.sin6_addr.s6_addr32[0]) || \ if ((have_remaddr && (flags & NETSTAT_CONNECTED))
(A.sin6_addr.s6_addr32[1]) || \ || (!have_remaddr && (flags & NETSTAT_LISTENING))
(A.sin6_addr.s6_addr32[2]) || \
(A.sin6_addr.s6_addr32[3]))) || \
((A.sin6_family == AF_INET) && \
((struct sockaddr_in *) &A)->sin_addr.s_addr))
#else
# define notnull(A) (A.sin_addr.s_addr)
#endif
if ((notnull(remaddr) && (flags & NETSTAT_CONNECTED))
|| (!notnull(remaddr) && (flags & NETSTAT_LISTENING))
) { ) {
snprint_ip_port(local_addr, sizeof(local_addr), snprint_ip_port(local_addr, sizeof(local_addr),
(struct sockaddr *) &localaddr, local_port, (struct sockaddr *) &localaddr, local_port,
"raw", flags & NETSTAT_NUMERIC); "raw", flags & NETSTAT_NUMERIC);
snprint_ip_port(rem_addr, sizeof(rem_addr), snprint_ip_port(rem_addr, sizeof(rem_addr),
(struct sockaddr *) &remaddr, rem_port, (struct sockaddr *) &remaddr, rem_port,
"raw", flags & NETSTAT_NUMERIC); "raw", flags & NETSTAT_NUMERIC);
printf(net_conn_line,
printf("raw %6ld %6ld %-23s %-23s %-12s\n", "raw", rxq, txq, local_addr, rem_addr, itoa(state));
rxq, txq, local_addr, rem_addr, state_str); }
} }
} }
#define HAS_INODE 1
static void unix_do_one(int nr, const char *line) static void unix_do_one(int nr, const char *line)
{ {
static int has = 0; static smallint has_inode = 0;
char path[PATH_MAX], ss_flags[32]; char path[PATH_MAX], ss_flags[32];
const char *ss_proto, *ss_state, *ss_type; const char *ss_proto, *ss_state, *ss_type;
int num, state, type, inode; int num, state, type, inode;
@ -365,7 +363,7 @@ static void unix_do_one(int nr, const char *line)
if (nr == 0) { if (nr == 0) {
if (strstr(line, "Inode")) if (strstr(line, "Inode"))
has |= HAS_INODE; has_inode = 1;
return; return;
} }
path[0] = '\0'; path[0] = '\0';
@ -375,8 +373,8 @@ static void unix_do_one(int nr, const char *line)
bb_error_msg("warning, got bogus unix line"); bb_error_msg("warning, got bogus unix line");
return; return;
} }
if (!(has & HAS_INODE)) if (!has_inode)
snprintf(path,sizeof(path),"%d",inode); sprintf(path, "%d", inode);
if ((flags & (NETSTAT_LISTENING|NETSTAT_CONNECTED)) != (NETSTAT_LISTENING|NETSTAT_CONNECTED)) { if ((flags & (NETSTAT_LISTENING|NETSTAT_CONNECTED)) != (NETSTAT_LISTENING|NETSTAT_CONNECTED)) {
if ((state == SS_UNCONNECTED) && (unix_flags & SO_ACCEPTCON)) { if ((state == SS_UNCONNECTED) && (unix_flags & SO_ACCEPTCON)) {
@ -392,7 +390,6 @@ static void unix_do_one(int nr, const char *line)
case 0: case 0:
ss_proto = "unix"; ss_proto = "unix";
break; break;
default: default:
ss_proto = "??"; ss_proto = "??";
} }
@ -401,23 +398,18 @@ static void unix_do_one(int nr, const char *line)
case SOCK_STREAM: case SOCK_STREAM:
ss_type = "STREAM"; ss_type = "STREAM";
break; break;
case SOCK_DGRAM: case SOCK_DGRAM:
ss_type = "DGRAM"; ss_type = "DGRAM";
break; break;
case SOCK_RAW: case SOCK_RAW:
ss_type = "RAW"; ss_type = "RAW";
break; break;
case SOCK_RDM: case SOCK_RDM:
ss_type = "RDM"; ss_type = "RDM";
break; break;
case SOCK_SEQPACKET: case SOCK_SEQPACKET:
ss_type = "SEQPACKET"; ss_type = "SEQPACKET";
break; break;
default: default:
ss_type = "UNKNOWN"; ss_type = "UNKNOWN";
} }
@ -426,7 +418,6 @@ static void unix_do_one(int nr, const char *line)
case SS_FREE: case SS_FREE:
ss_state = "FREE"; ss_state = "FREE";
break; break;
case SS_UNCONNECTED: case SS_UNCONNECTED:
/* /*
* Unconnected sockets may be listening * Unconnected sockets may be listening
@ -438,19 +429,15 @@ static void unix_do_one(int nr, const char *line)
ss_state = ""; ss_state = "";
} }
break; break;
case SS_CONNECTING: case SS_CONNECTING:
ss_state = "CONNECTING"; ss_state = "CONNECTING";
break; break;
case SS_CONNECTED: case SS_CONNECTED:
ss_state = "CONNECTED"; ss_state = "CONNECTED";
break; break;
case SS_DISCONNECTING: case SS_DISCONNECTING:
ss_state = "DISCONNECTING"; ss_state = "DISCONNECTING";
break; break;
default: default:
ss_state = "UNKNOWN"; ss_state = "UNKNOWN";
} }
@ -462,12 +449,11 @@ static void unix_do_one(int nr, const char *line)
strcat(ss_flags, "W "); strcat(ss_flags, "W ");
if (unix_flags & SO_NOSPACE) if (unix_flags & SO_NOSPACE)
strcat(ss_flags, "N "); strcat(ss_flags, "N ");
strcat(ss_flags, "]"); strcat(ss_flags, "]");
printf("%-5s %-6ld %-11s %-10s %-13s ", printf("%-5s %-6ld %-11s %-10s %-13s ",
ss_proto, refcnt, ss_flags, ss_type, ss_state); ss_proto, refcnt, ss_flags, ss_type, ss_state);
if (has & HAS_INODE) if (has_inode)
printf("%-6d ", inode); printf("%-6d ", inode);
else else
printf("- "); printf("- ");
@ -513,20 +499,16 @@ static void do_info(const char *file, const char *name, void (*proc)(int, const
int netstat_main(int argc, char **argv); int netstat_main(int argc, char **argv);
int netstat_main(int argc, char **argv) int netstat_main(int argc, char **argv)
{ {
enum {
OPT_extended = 0x4,
OPT_showroute = 0x100,
};
unsigned opt; unsigned opt;
#if ENABLE_FEATURE_IPV6 #if ENABLE_FEATURE_IPV6
int inet = 1; smallint inet = 1;
int inet6 = 1; smallint inet6 = 1;
#else #else
enum { inet = 1, inet6 = 0 }; enum { inet = 1, inet6 = 0 };
#endif #endif
/* Option string must match NETSTAT_xxx constants */ /* Option string must match NETSTAT_xxx constants */
opt = getopt32(argc, argv, "laentuwxr"); opt = getopt32(argc, argv, NETSTAT_OPTS);
if (opt & 0x1) { // -l if (opt & 0x1) { // -l
flags &= ~NETSTAT_CONNECTED; flags &= ~NETSTAT_CONNECTED;
flags |= NETSTAT_LISTENING; flags |= NETSTAT_LISTENING;
@ -543,10 +525,14 @@ int netstat_main(int argc, char **argv)
bb_displayroutes(flags & NETSTAT_NUMERIC, !(opt & OPT_extended)); bb_displayroutes(flags & NETSTAT_NUMERIC, !(opt & OPT_extended));
return 0; return 0;
#else #else
bb_error_msg_and_die("-r (display routing table) is not compiled in"); bb_show_usage();
#endif #endif
} }
if (opt & OPT_widedisplay) { // -W
net_conn_line = PRINT_NET_CONN_WIDE;
}
opt &= NETSTAT_ALLPROTO; opt &= NETSTAT_ALLPROTO;
if (opt) { if (opt) {
flags &= ~NETSTAT_ALLPROTO; flags &= ~NETSTAT_ALLPROTO;
@ -561,7 +547,8 @@ int netstat_main(int argc, char **argv)
printf("(only servers)"); printf("(only servers)");
else else
printf("(w/o servers)"); printf("(w/o servers)");
printf("\nProto Recv-Q Send-Q Local Address Foreign Address State\n"); printf((opt & OPT_widedisplay) ? PRINT_NET_CONN_HEADER_WIDE : PRINT_NET_CONN_HEADER,
"Local Address", "Foreign Address");
} }
if (inet && flags & NETSTAT_TCP) if (inet && flags & NETSTAT_TCP)
do_info(_PATH_PROCNET_TCP, "AF INET (tcp)", tcp_do_one); do_info(_PATH_PROCNET_TCP, "AF INET (tcp)", tcp_do_one);