*
* Copyright (C) 2002 by Bart Visscher <magick@linux-fan.com>
*
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- *
* 2002-04-20
* IPV6 support added by Bart Visscher <magick@linux-fan.com>
+ *
+ * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
*/
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <stdarg.h>
-#include <signal.h>
-#include <errno.h>
-#include <sys/stat.h>
-#include <dirent.h>
-#include <unistd.h>
+#include "libbb.h"
#include "inet_common.h"
-#include "busybox.h"
-#include "pwd_.h"
-#ifdef CONFIG_ROUTE
-extern void displayroutes(int noresolve, int netstatfmt);
-#endif
-
-#define NETSTAT_CONNECTED 0x01
-#define NETSTAT_LISTENING 0x02
-#define NETSTAT_NUMERIC 0x04
-#define NETSTAT_TCP 0x10
-#define NETSTAT_UDP 0x20
-#define NETSTAT_RAW 0x40
-#define NETSTAT_UNIX 0x80
-
-static int flags = NETSTAT_CONNECTED |
- NETSTAT_TCP | NETSTAT_UDP | NETSTAT_RAW | NETSTAT_UNIX;
+enum {
+ OPT_extended = 0x4,
+ OPT_showroute = 0x100,
+ OPT_widedisplay = 0x200 * ENABLE_FEATURE_NETSTAT_WIDE,
+};
+# define NETSTAT_OPTS "laentuwxr"USE_FEATURE_NETSTAT_WIDE("W")
-#define PROGNAME_WIDTHs PROGNAME_WIDTH1(PROGNAME_WIDTH)
-#define PROGNAME_WIDTH1(s) PROGNAME_WIDTH2(s)
-#define PROGNAME_WIDTH2(s) #s
+#define NETSTAT_CONNECTED 0x01
+#define NETSTAT_LISTENING 0x02
+#define NETSTAT_NUMERIC 0x04
+/* Must match getopt32 option string */
+#define NETSTAT_TCP 0x10
+#define NETSTAT_UDP 0x20
+#define NETSTAT_RAW 0x40
+#define NETSTAT_UNIX 0x80
+#define NETSTAT_ALLPROTO (NETSTAT_TCP|NETSTAT_UDP|NETSTAT_RAW|NETSTAT_UNIX)
-#define PRG_HASH_SIZE 211
+static smallint flags = NETSTAT_CONNECTED | NETSTAT_ALLPROTO;
enum {
- TCP_ESTABLISHED = 1,
- TCP_SYN_SENT,
- TCP_SYN_RECV,
- TCP_FIN_WAIT1,
- TCP_FIN_WAIT2,
- TCP_TIME_WAIT,
- TCP_CLOSE,
- TCP_CLOSE_WAIT,
- TCP_LAST_ACK,
- TCP_LISTEN,
- TCP_CLOSING /* now a valid state */
+ TCP_ESTABLISHED = 1,
+ TCP_SYN_SENT,
+ TCP_SYN_RECV,
+ TCP_FIN_WAIT1,
+ TCP_FIN_WAIT2,
+ TCP_TIME_WAIT,
+ TCP_CLOSE,
+ TCP_CLOSE_WAIT,
+ TCP_LAST_ACK,
+ TCP_LISTEN,
+ TCP_CLOSING /* now a valid state */
};
-static const char * const tcp_state[] =
-{
- "",
- "ESTABLISHED",
- "SYN_SENT",
- "SYN_RECV",
- "FIN_WAIT1",
- "FIN_WAIT2",
- "TIME_WAIT",
- "CLOSE",
- "CLOSE_WAIT",
- "LAST_ACK",
- "LISTEN",
- "CLOSING"
+static const char *const tcp_state[] = {
+ "",
+ "ESTABLISHED",
+ "SYN_SENT",
+ "SYN_RECV",
+ "FIN_WAIT1",
+ "FIN_WAIT2",
+ "TIME_WAIT",
+ "CLOSE",
+ "CLOSE_WAIT",
+ "LAST_ACK",
+ "LISTEN",
+ "CLOSING"
};
typedef enum {
- SS_FREE = 0, /* not allocated */
- SS_UNCONNECTED, /* unconnected to any socket */
- SS_CONNECTING, /* in process of connecting */
- SS_CONNECTED, /* connected to socket */
- SS_DISCONNECTING /* in process of disconnecting */
+ SS_FREE = 0, /* not allocated */
+ SS_UNCONNECTED, /* unconnected to any socket */
+ SS_CONNECTING, /* in process of connecting */
+ SS_CONNECTED, /* connected to socket */
+ SS_DISCONNECTING /* in process of disconnecting */
} socket_state;
-#define SO_ACCEPTCON (1<<16) /* performed a listen */
-#define SO_WAITDATA (1<<17) /* wait data to read */
-#define SO_NOSPACE (1<<18) /* no space to write */
+#define SO_ACCEPTCON (1<<16) /* performed a listen */
+#define SO_WAITDATA (1<<17) /* wait data to read */
+#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);
-static char *itoa(unsigned int i)
+ 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
{
- /* 21 digits plus null terminator, good for 64-bit or smaller ints */
- static char local[22];
- char *p = &local[21];
- *p-- = '\0';
- do {
- *p-- = '0' + i % 10;
- i /= 10;
- } while (i > 0);
- return p + 1;
+ sscanf(local_addr, "%X",
+ &((struct sockaddr_in *) localaddr)->sin_addr.s_addr);
+ ((struct sockaddr *) localaddr)->sa_family = AF_INET;
}
-static char *get_sname(int port, const char *proto, int num)
+static const char *get_sname(int port, const char *proto, int numeric)
{
- char *str=itoa(ntohs(port));
- if (num) {
- } else {
- struct servent *se=getservbyport(port,proto);
+ if (!port)
+ return "*";
+ if (!numeric) {
+ struct servent *se = getservbyport(port, proto);
if (se)
- str=se->s_name;
+ return se->s_name;
}
- if (!port) {
- str="*";
- }
- return str;
+ /* hummm, we may return static buffer here!! */
+ return itoa(ntohs(port));
}
-static void snprint_ip_port(char *ip_port, int size, struct sockaddr *addr, int port, char *proto, int numeric)
+static char *ip_port_str(struct sockaddr *addr, int port, const char *proto, int numeric)
{
- char *port_name;
+ enum { salen = USE_FEATURE_IPV6(sizeof(struct sockaddr_in6)) SKIP_FEATURE_IPV6(sizeof(struct sockaddr_in)) };
+ char *host, *host_port;
-#ifdef CONFIG_FEATURE_IPV6
- if (addr->sa_family == AF_INET6) {
- INET6_rresolve(ip_port, size, (struct sockaddr_in6 *)addr,
- (numeric&NETSTAT_NUMERIC) ? 0x0fff : 0);
- } else
-#endif
- {
- INET_rresolve(ip_port, size, (struct sockaddr_in *)addr,
- 0x4000 | ((numeric&NETSTAT_NUMERIC) ? 0x0fff : 0),
- 0xffffffff);
- }
- port_name=get_sname(htons(port), proto, numeric);
- if ((strlen(ip_port) + strlen(port_name)) > 22)
- ip_port[22 - strlen(port_name)] = '\0';
- ip_port+=strlen(ip_port);
- strcat(ip_port, ":");
- strcat(ip_port, port_name);
+ /* Code which used "*" for INADDR_ANY is removed: it's ambiguous in IPv6,
+ * while "0.0.0.0" is not. */
+
+ host = numeric ? xmalloc_sockaddr2dotted_noport(addr)
+ : xmalloc_sockaddr2host_noport(addr);
+
+ host_port = xasprintf("%s:%s", host, get_sname(htons(port), proto, numeric));
+ free(host);
+ return host_port;
}
-static void tcp_do_one(int lnr, const char *line)
+static int tcp_do_one(int lnr, char *line)
{
char local_addr[64], rem_addr[64];
- const char *state_str;
char more[512];
int num, local_port, rem_port, d, state, timer_run, uid, timeout;
-#ifdef CONFIG_FEATURE_IPV6
+#if ENABLE_FEATURE_IPV6
struct sockaddr_in6 localaddr, remaddr;
- char addr6[INET6_ADDRSTRLEN];
- struct in6_addr in6;
#else
struct sockaddr_in localaddr, remaddr;
#endif
unsigned long rxq, txq, time_len, retr, inode;
if (lnr == 0)
- return;
+ return 0;
more[0] = '\0';
num = sscanf(line,
- "%d: %64[0-9A-Fa-f]:%X %64[0-9A-Fa-f]:%X %X %lX:%lX %X:%lX %lX %d %d %ld %512s\n",
- &d, local_addr, &local_port,
- rem_addr, &rem_port, &state,
- &txq, &rxq, &timer_run, &time_len, &retr, &uid, &timeout, &inode, more);
+ "%d: %64[0-9A-Fa-f]:%X %64[0-9A-Fa-f]:%X %X %lX:%lX %X:%lX %lX %d %d %ld %512s\n",
+ &d, local_addr, &local_port,
+ rem_addr, &rem_port, &state,
+ &txq, &rxq, &timer_run, &time_len, &retr, &uid, &timeout, &inode, more);
+
+ if (num < 10) {
+ return 1; /* error */
+ }
if (strlen(local_addr) > 8) {
-#ifdef CONFIG_FEATURE_IPV6
- 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);
- 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;
+#if ENABLE_FEATURE_IPV6
+ build_ipv6_addr(local_addr, &localaddr);
+ build_ipv6_addr(rem_addr, &remaddr);
#endif
} else {
- sscanf(local_addr, "%X",
- &((struct sockaddr_in *) &localaddr)->sin_addr.s_addr);
- 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;
+ build_ipv4_addr(local_addr, &localaddr);
+ build_ipv4_addr(rem_addr, &remaddr);
}
- if (num < 10) {
- bb_error_msg("warning, got bogus tcp line.");
- return;
- }
- state_str = tcp_state[state];
- if ((rem_port && (flags&NETSTAT_CONNECTED)) ||
- (!rem_port && (flags&NETSTAT_LISTENING)))
- {
- snprint_ip_port(local_addr, sizeof(local_addr),
- (struct sockaddr *) &localaddr, local_port,
- "tcp", flags&NETSTAT_NUMERIC);
-
- snprint_ip_port(rem_addr, sizeof(rem_addr),
- (struct sockaddr *) &remaddr, rem_port,
- "tcp", flags&NETSTAT_NUMERIC);
-
- printf("tcp %6ld %6ld %-23s %-23s %-12s\n",
- rxq, txq, local_addr, rem_addr, state_str);
-
+ if ((rem_port && (flags & NETSTAT_CONNECTED))
+ || (!rem_port && (flags & NETSTAT_LISTENING))
+ ) {
+ char *l = ip_port_str(
+ (struct sockaddr *) &localaddr, local_port,
+ "tcp", flags & NETSTAT_NUMERIC);
+ char *r = ip_port_str(
+ (struct sockaddr *) &remaddr, rem_port,
+ "tcp", flags & NETSTAT_NUMERIC);
+ printf(net_conn_line,
+ "tcp", rxq, txq, l, r, tcp_state[state]);
+ free(l);
+ free(r);
}
+ return 0;
}
-static void udp_do_one(int lnr, const char *line)
+static int udp_do_one(int lnr, char *line)
{
char local_addr[64], rem_addr[64];
- char *state_str, more[512];
+ const char *state_str;
+ char more[512];
int num, local_port, rem_port, d, state, timer_run, uid, timeout;
-#ifdef CONFIG_FEATURE_IPV6
+#if ENABLE_FEATURE_IPV6
struct sockaddr_in6 localaddr, remaddr;
- char addr6[INET6_ADDRSTRLEN];
- struct in6_addr in6;
#else
struct sockaddr_in localaddr, remaddr;
#endif
unsigned long rxq, txq, time_len, retr, inode;
if (lnr == 0)
- return;
+ return 0;
more[0] = '\0';
num = sscanf(line,
- "%d: %64[0-9A-Fa-f]:%X %64[0-9A-Fa-f]:%X %X %lX:%lX %X:%lX %lX %d %d %ld %512s\n",
- &d, local_addr, &local_port,
- rem_addr, &rem_port, &state,
- &txq, &rxq, &timer_run, &time_len, &retr, &uid, &timeout, &inode, more);
+ "%d: %64[0-9A-Fa-f]:%X %64[0-9A-Fa-f]:%X %X %lX:%lX %X:%lX %lX %d %d %ld %512s\n",
+ &d, local_addr, &local_port,
+ rem_addr, &rem_port, &state,
+ &txq, &rxq, &timer_run, &time_len, &retr, &uid, &timeout, &inode, more);
if (strlen(local_addr) > 8) {
-#ifdef CONFIG_FEATURE_IPV6
- /* Demangle what the kernel gives us */
- 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);
- 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;
+#if ENABLE_FEATURE_IPV6
+ /* Demangle what the kernel gives us */
+ build_ipv6_addr(local_addr, &localaddr);
+ build_ipv6_addr(rem_addr, &remaddr);
#endif
} else {
- sscanf(local_addr, "%X",
- &((struct sockaddr_in *) &localaddr)->sin_addr.s_addr);
- 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;
+ build_ipv4_addr(local_addr, &localaddr);
+ build_ipv4_addr(rem_addr, &remaddr);
}
if (num < 10) {
- bb_error_msg("warning, got bogus udp line.");
- return;
+ return 1; /* error */
}
switch (state) {
case TCP_ESTABLISHED:
state_str = "ESTABLISHED";
break;
-
case TCP_CLOSE:
state_str = "";
break;
-
default:
state_str = "UNKNOWN";
break;
}
-#ifdef CONFIG_FEATURE_IPV6
-# define notnull(A) (((A.sin6_family == AF_INET6) && \
- ((A.sin6_addr.s6_addr32[0]) || \
- (A.sin6_addr.s6_addr32[1]) || \
- (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))
+#if ENABLE_FEATURE_IPV6
+# define notnull(A) ( \
+ ( (A.sin6_family == AF_INET6) \
+ && (A.sin6_addr.s6_addr32[0] | A.sin6_addr.s6_addr32[1] | \
+ 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),
- (struct sockaddr *) &localaddr, local_port,
- "udp", flags&NETSTAT_NUMERIC);
-
- snprint_ip_port(rem_addr, sizeof(rem_addr),
- (struct sockaddr *) &remaddr, rem_port,
- "udp", flags&NETSTAT_NUMERIC);
-
- printf("udp %6ld %6ld %-23s %-23s %-12s\n",
- rxq, txq, local_addr, rem_addr, state_str);
-
+ int have_remaddr = notnull(remaddr);
+ if ((have_remaddr && (flags & NETSTAT_CONNECTED))
+ || (!have_remaddr && (flags & NETSTAT_LISTENING))
+ ) {
+ char *l = ip_port_str(
+ (struct sockaddr *) &localaddr, local_port,
+ "udp", flags & NETSTAT_NUMERIC);
+ char *r = ip_port_str(
+ (struct sockaddr *) &remaddr, rem_port,
+ "udp", flags & NETSTAT_NUMERIC);
+ printf(net_conn_line,
+ "udp", rxq, txq, l, r, state_str);
+ free(l);
+ free(r);
+ }
}
+ return 0;
}
-static void raw_do_one(int lnr, const char *line)
+static int raw_do_one(int lnr, char *line)
{
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;
-#ifdef CONFIG_FEATURE_IPV6
+#if ENABLE_FEATURE_IPV6
struct sockaddr_in6 localaddr, remaddr;
- char addr6[INET6_ADDRSTRLEN];
- struct in6_addr in6;
#else
struct sockaddr_in localaddr, remaddr;
#endif
unsigned long rxq, txq, time_len, retr, inode;
if (lnr == 0)
- return;
+ return 0;
more[0] = '\0';
num = sscanf(line,
- "%d: %64[0-9A-Fa-f]:%X %64[0-9A-Fa-f]:%X %X %lX:%lX %X:%lX %lX %d %d %ld %512s\n",
- &d, local_addr, &local_port,
- rem_addr, &rem_port, &state,
- &txq, &rxq, &timer_run, &time_len, &retr, &uid, &timeout, &inode, more);
+ "%d: %64[0-9A-Fa-f]:%X %64[0-9A-Fa-f]:%X %X %lX:%lX %X:%lX %lX %d %d %ld %512s\n",
+ &d, local_addr, &local_port,
+ rem_addr, &rem_port, &state,
+ &txq, &rxq, &timer_run, &time_len, &retr, &uid, &timeout, &inode, more);
if (strlen(local_addr) > 8) {
-#ifdef CONFIG_FEATURE_IPV6
- 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);
- 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;
+#if ENABLE_FEATURE_IPV6
+ build_ipv6_addr(local_addr, &localaddr);
+ build_ipv6_addr(rem_addr, &remaddr);
#endif
} else {
- sscanf(local_addr, "%X",
- &((struct sockaddr_in *) &localaddr)->sin_addr.s_addr);
- 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;
+ build_ipv4_addr(local_addr, &localaddr);
+ build_ipv4_addr(rem_addr, &remaddr);
}
if (num < 10) {
- bb_error_msg("warning, got bogus raw line.");
- return;
+ return 1; /* error */
}
- state_str=itoa(state);
-
-#ifdef CONFIG_FEATURE_IPV6
-# define notnull(A) (((A.sin6_family == AF_INET6) && \
- ((A.sin6_addr.s6_addr32[0]) || \
- (A.sin6_addr.s6_addr32[1]) || \
- (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),
- (struct sockaddr *) &localaddr, local_port,
- "raw", flags&NETSTAT_NUMERIC);
-
- snprint_ip_port(rem_addr, sizeof(rem_addr),
- (struct sockaddr *) &remaddr, rem_port,
- "raw", flags&NETSTAT_NUMERIC);
-
- printf("raw %6ld %6ld %-23s %-23s %-12s\n",
- rxq, txq, local_addr, rem_addr, state_str);
+ {
+ int have_remaddr = notnull(remaddr);
+ if ((have_remaddr && (flags & NETSTAT_CONNECTED))
+ || (!have_remaddr && (flags & NETSTAT_LISTENING))
+ ) {
+ char *l = ip_port_str(
+ (struct sockaddr *) &localaddr, local_port,
+ "raw", flags & NETSTAT_NUMERIC);
+ char *r = ip_port_str(
+ (struct sockaddr *) &remaddr, rem_port,
+ "raw", flags & NETSTAT_NUMERIC);
+ printf(net_conn_line,
+ "raw", rxq, txq, l, r, itoa(state));
+ free(l);
+ free(r);
+ }
}
+ return 0;
}
-#define HAS_INODE 1
-
-static void unix_do_one(int nr, const char *line)
+static int unix_do_one(int nr, char *line)
{
- static int has = 0;
- char path[PATH_MAX], ss_flags[32];
- char *ss_proto, *ss_state, *ss_type;
- int num, state, type, inode;
- void *d;
unsigned long refcnt, proto, unix_flags;
+ unsigned long inode;
+ int type, state;
+ int num, path_ofs;
+ void *d;
+ const char *ss_proto, *ss_state, *ss_type;
+ char ss_flags[32];
- if (nr == 0) {
- if (strstr(line, "Inode"))
- has |= HAS_INODE;
- return;
- }
- path[0] = '\0';
- num = sscanf(line, "%p: %lX %lX %lX %X %X %d %s",
- &d, &refcnt, &proto, &unix_flags, &type, &state, &inode, path);
- if (num < 6) {
- bb_error_msg("warning, got bogus unix line.");
- return;
- }
- if (!(has & HAS_INODE))
- snprintf(path,sizeof(path),"%d",inode);
+ if (nr == 0)
+ return 0; /* skip header */
+
+ /* 2.6.15 may report lines like "... @/tmp/fam-user-^@^@^@^@^@^@^@..."
+ * Other users report long lines filled by NUL bytes.
+ * (those ^@ are NUL bytes too). We see them as empty lines. */
+ if (!line[0])
+ return 0;
- if ((flags&(NETSTAT_LISTENING|NETSTAT_CONNECTED))!=(NETSTAT_LISTENING|NETSTAT_CONNECTED)) {
+ path_ofs = 0; /* paranoia */
+ num = sscanf(line, "%p: %lX %lX %lX %X %X %lu %n",
+ &d, &refcnt, &proto, &unix_flags, &type, &state, &inode, &path_ofs);
+ if (num < 7) {
+ return 1; /* error */
+ }
+ if ((flags & (NETSTAT_LISTENING|NETSTAT_CONNECTED)) != (NETSTAT_LISTENING|NETSTAT_CONNECTED)) {
if ((state == SS_UNCONNECTED) && (unix_flags & SO_ACCEPTCON)) {
- if (!(flags&NETSTAT_LISTENING))
- return;
+ if (!(flags & NETSTAT_LISTENING))
+ return 0;
} else {
- if (!(flags&NETSTAT_CONNECTED))
- return;
+ if (!(flags & NETSTAT_CONNECTED))
+ return 0;
}
}
case 0:
ss_proto = "unix";
break;
-
default:
ss_proto = "??";
}
case SOCK_STREAM:
ss_type = "STREAM";
break;
-
case SOCK_DGRAM:
ss_type = "DGRAM";
break;
-
case SOCK_RAW:
ss_type = "RAW";
break;
-
case SOCK_RDM:
ss_type = "RDM";
break;
-
case SOCK_SEQPACKET:
ss_type = "SEQPACKET";
break;
-
default:
ss_type = "UNKNOWN";
}
case SS_FREE:
ss_state = "FREE";
break;
-
case SS_UNCONNECTED:
/*
* Unconnected sockets may be listening
ss_state = "";
}
break;
-
case SS_CONNECTING:
ss_state = "CONNECTING";
break;
-
case SS_CONNECTED:
ss_state = "CONNECTED";
break;
-
case SS_DISCONNECTING:
ss_state = "DISCONNECTING";
break;
-
default:
ss_state = "UNKNOWN";
}
strcat(ss_flags, "W ");
if (unix_flags & SO_NOSPACE)
strcat(ss_flags, "N ");
-
strcat(ss_flags, "]");
- printf("%-5s %-6ld %-11s %-10s %-13s ",
- ss_proto, refcnt, ss_flags, ss_type, ss_state);
- if (has & HAS_INODE)
- printf("%-6d ",inode);
- else
- printf("- ");
- puts(path);
+ printf("%-5s %-6ld %-11s %-10s %-13s %6lu ",
+ ss_proto, refcnt, ss_flags, ss_type, ss_state, inode
+ );
+
+ /* TODO: currently we stop at first NUL byte. Is it a problem? */
+ line += path_ofs;
+ *strchrnul(line, '\n') = '\0';
+ while (*line)
+ fputc_printable(*line++, stdout);
+ bb_putchar('\n');
+ return 0;
}
#define _PATH_PROCNET_UDP "/proc/net/udp"
#define _PATH_PROCNET_RAW6 "/proc/net/raw6"
#define _PATH_PROCNET_UNIX "/proc/net/unix"
-static void do_info(const char *file, const char *name, void (*proc)(int, const char *))
+static void do_info(const char *file, const char *name, int (*proc)(int, char *))
{
- char buffer[8192];
- int lnr = 0;
+ int lnr;
FILE *procinfo;
+ char *buffer;
procinfo = fopen(file, "r");
if (procinfo == NULL) {
if (errno != ENOENT) {
- perror(file);
+ bb_simple_perror_msg(file);
} else {
- bb_error_msg("no support for `%s' on this system.", name);
+ bb_error_msg("no kernel support for %s", name);
}
- } else {
- do {
- if (fgets(buffer, sizeof(buffer), procinfo))
- (proc)(lnr++, buffer);
- } while (!feof(procinfo));
- fclose(procinfo);
+ return;
+ }
+ lnr = 0;
+ /* Why? because xmalloc_fgets_str doesn't stop on NULs */
+ while ((buffer = xmalloc_fgets_str(procinfo, "\n")) != NULL) {
+ if (proc(lnr++, buffer))
+ bb_error_msg("%s: bogus data on line %d", file, lnr);
+ free(buffer);
}
+ fclose(procinfo);
}
-/*
- * Our main function.
- */
-
-int netstat_main(int argc, char **argv)
+int netstat_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
+int netstat_main(int argc ATTRIBUTE_UNUSED, char **argv)
{
- int opt;
- int new_flags=0;
- int showroute = 0, extended = 0;
-#ifdef CONFIG_FEATURE_IPV6
- int inet=1;
- int inet6=1;
+ const char *net_conn_line_header = PRINT_NET_CONN_HEADER;
+ unsigned opt;
+#if ENABLE_FEATURE_IPV6
+ smallint inet = 1;
+ smallint inet6 = 1;
#else
-# define inet 1
-# define inet6 0
+ enum { inet = 1, inet6 = 0 };
#endif
- while ((opt = getopt(argc, argv, "laenrtuwx")) != -1)
- switch (opt) {
- case 'l':
- flags &= ~NETSTAT_CONNECTED;
- flags |= NETSTAT_LISTENING;
- break;
- case 'a':
- flags |= NETSTAT_LISTENING | NETSTAT_CONNECTED;
- break;
- case 'n':
- flags |= NETSTAT_NUMERIC;
- break;
- case 'r':
- showroute = 1;
- break;
- case 'e':
- extended = 1;
- break;
- case 't':
- new_flags |= NETSTAT_TCP;
- break;
- case 'u':
- new_flags |= NETSTAT_UDP;
- break;
- case 'w':
- new_flags |= NETSTAT_RAW;
- break;
- case 'x':
- new_flags |= NETSTAT_UNIX;
- break;
- default:
- bb_show_usage();
- }
- if ( showroute ) {
-#ifdef CONFIG_ROUTE
- displayroutes ( flags & NETSTAT_NUMERIC, !extended );
+
+ /* Option string must match NETSTAT_xxx constants */
+ opt = getopt32(argv, NETSTAT_OPTS);
+ if (opt & 0x1) { // -l
+ flags &= ~NETSTAT_CONNECTED;
+ flags |= NETSTAT_LISTENING;
+ }
+ if (opt & 0x2) flags |= NETSTAT_LISTENING | NETSTAT_CONNECTED; // -a
+ //if (opt & 0x4) // -e
+ if (opt & 0x8) flags |= NETSTAT_NUMERIC; // -n
+ //if (opt & 0x10) // -t: NETSTAT_TCP
+ //if (opt & 0x20) // -u: NETSTAT_UDP
+ //if (opt & 0x40) // -w: NETSTAT_RAW
+ //if (opt & 0x80) // -x: NETSTAT_UNIX
+ if (opt & OPT_showroute) { // -r
+#if ENABLE_ROUTE
+ bb_displayroutes(flags & NETSTAT_NUMERIC, !(opt & OPT_extended));
return 0;
#else
- bb_error_msg_and_die( "-r (display routing table) is not compiled in." );
+ bb_show_usage();
#endif
}
- if (new_flags) {
- flags &= ~(NETSTAT_TCP|NETSTAT_UDP|NETSTAT_RAW|NETSTAT_UNIX);
- flags |= new_flags;
+ if (opt & OPT_widedisplay) { // -W
+ net_conn_line = PRINT_NET_CONN_WIDE;
+ net_conn_line_header = PRINT_NET_CONN_HEADER_WIDE;
+ }
+
+ opt &= NETSTAT_ALLPROTO;
+ if (opt) {
+ flags &= ~NETSTAT_ALLPROTO;
+ flags |= opt;
}
- if (flags&(NETSTAT_TCP|NETSTAT_UDP|NETSTAT_RAW)) {
+ if (flags & (NETSTAT_TCP|NETSTAT_UDP|NETSTAT_RAW)) {
printf("Active Internet connections "); /* xxx */
- if ((flags&(NETSTAT_LISTENING|NETSTAT_CONNECTED))==(NETSTAT_LISTENING|NETSTAT_CONNECTED))
+ if ((flags & (NETSTAT_LISTENING|NETSTAT_CONNECTED)) == (NETSTAT_LISTENING|NETSTAT_CONNECTED))
printf("(servers and established)");
- else {
- if (flags&NETSTAT_LISTENING)
- printf("(only servers)");
- else
- printf("(w/o servers)");
- }
- printf("\nProto Recv-Q Send-Q Local Address Foreign Address State \n");
+ else if (flags & NETSTAT_LISTENING)
+ printf("(only servers)");
+ else
+ printf("(w/o servers)");
+ printf(net_conn_line_header, "Local Address", "Foreign Address");
}
- if (inet && flags&NETSTAT_TCP)
- do_info(_PATH_PROCNET_TCP,"AF INET (tcp)",tcp_do_one);
-#ifdef CONFIG_FEATURE_IPV6
- if (inet6 && flags&NETSTAT_TCP)
- do_info(_PATH_PROCNET_TCP6,"AF INET6 (tcp)",tcp_do_one);
+ if (inet && flags & NETSTAT_TCP)
+ do_info(_PATH_PROCNET_TCP, "AF INET (tcp)", tcp_do_one);
+#if ENABLE_FEATURE_IPV6
+ if (inet6 && flags & NETSTAT_TCP)
+ do_info(_PATH_PROCNET_TCP6, "AF INET6 (tcp)", tcp_do_one);
#endif
- if (inet && flags&NETSTAT_UDP)
- do_info(_PATH_PROCNET_UDP,"AF INET (udp)",udp_do_one);
-#ifdef CONFIG_FEATURE_IPV6
- if (inet6 && flags&NETSTAT_UDP)
- do_info(_PATH_PROCNET_UDP6,"AF INET6 (udp)",udp_do_one);
+ if (inet && flags & NETSTAT_UDP)
+ do_info(_PATH_PROCNET_UDP, "AF INET (udp)", udp_do_one);
+#if ENABLE_FEATURE_IPV6
+ if (inet6 && flags & NETSTAT_UDP)
+ do_info(_PATH_PROCNET_UDP6, "AF INET6 (udp)", udp_do_one);
#endif
- if (inet && flags&NETSTAT_RAW)
- do_info(_PATH_PROCNET_RAW,"AF INET (raw)",raw_do_one);
-#ifdef CONFIG_FEATURE_IPV6
- if (inet6 && flags&NETSTAT_RAW)
- do_info(_PATH_PROCNET_RAW6,"AF INET6 (raw)",raw_do_one);
+ if (inet && flags & NETSTAT_RAW)
+ do_info(_PATH_PROCNET_RAW, "AF INET (raw)", raw_do_one);
+#if ENABLE_FEATURE_IPV6
+ if (inet6 && flags & NETSTAT_RAW)
+ do_info(_PATH_PROCNET_RAW6, "AF INET6 (raw)", raw_do_one);
#endif
- if (flags&NETSTAT_UNIX) {
+ if (flags & NETSTAT_UNIX) {
printf("Active UNIX domain sockets ");
- if ((flags&(NETSTAT_LISTENING|NETSTAT_CONNECTED))==(NETSTAT_LISTENING|NETSTAT_CONNECTED))
+ if ((flags & (NETSTAT_LISTENING|NETSTAT_CONNECTED)) == (NETSTAT_LISTENING|NETSTAT_CONNECTED))
printf("(servers and established)");
- else {
- if (flags&NETSTAT_LISTENING)
- printf("(only servers)");
- else
- printf("(w/o servers)");
- }
-
+ else if (flags & NETSTAT_LISTENING)
+ printf("(only servers)");
+ else
+ printf("(w/o servers)");
printf("\nProto RefCnt Flags Type State I-Node Path\n");
- do_info(_PATH_PROCNET_UNIX,"AF UNIX",unix_do_one);
+ do_info(_PATH_PROCNET_UNIX, "AF UNIX", unix_do_one);
}
return 0;
}
projects / oweals / busybox.git / blobdiff