* Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
*/
-#include "busybox.h"
+#include "libbb.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_LISTENING 0x02
#define NETSTAT_NUMERIC 0x04
#define NETSTAT_UNIX 0x80
#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 {
TCP_ESTABLISHED = 1,
TCP_CLOSING /* now a valid state */
};
-static const char * const tcp_state[] =
-{
+static const char *const tcp_state[] = {
"",
"ESTABLISHED",
"SYN_SENT",
#define SO_WAITDATA (1<<17) /* wait data to read */
#define SO_NOSPACE (1<<18) /* no space to write */
-static const char *get_sname(int port, const char *proto, int num)
+/* 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)
{
- /* hummm, we return static buffer here!! */
- const char *str = itoa(ntohs(port));
- if (!num) {
+ 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 numeric)
+{
+ 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, const char *proto, int numeric)
+static char *ip_port_str(struct sockaddr *addr, int port, const char *proto, int numeric)
{
- const char *port_name;
+ enum { salen = USE_FEATURE_IPV6(sizeof(struct sockaddr_in6)) SKIP_FEATURE_IPV6(sizeof(struct sockaddr_in)) };
+ char *host, *host_port;
-#if ENABLE_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)
{
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;
#if ENABLE_FEATURE_IPV6
struct sockaddr_in6 localaddr, remaddr;
- char addr6[INET6_ADDRSTRLEN];
- struct in6_addr in6;
#else
struct sockaddr_in localaddr, remaddr;
#endif
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) {
#if ENABLE_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;
+ 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);
+ 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);
}
}
int num, local_port, rem_port, d, state, timer_run, uid, timeout;
#if ENABLE_FEATURE_IPV6
struct sockaddr_in6 localaddr, remaddr;
- char addr6[INET6_ADDRSTRLEN];
- struct in6_addr in6;
#else
struct sockaddr_in localaddr, remaddr;
#endif
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) {
#if ENABLE_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;
+ /* 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) {
case TCP_ESTABLISHED:
state_str = "ESTABLISHED";
break;
-
case TCP_CLOSE:
state_str = "";
break;
-
default:
state_str = "UNKNOWN";
break;
}
#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))
+# 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);
+ }
}
}
static void raw_do_one(int lnr, const 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;
#if ENABLE_FEATURE_IPV6
struct sockaddr_in6 localaddr, remaddr;
- char addr6[INET6_ADDRSTRLEN];
- struct in6_addr in6;
#else
struct sockaddr_in localaddr, remaddr;
#endif
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) {
#if ENABLE_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;
+ 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;
}
- state_str = itoa(state);
-
-#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,
- "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);
+ }
}
}
-#define HAS_INODE 1
-
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];
const char *ss_proto, *ss_state, *ss_type;
int num, state, type, inode;
if (nr == 0) {
if (strstr(line, "Inode"))
- has |= HAS_INODE;
+ has_inode = 1;
return;
}
path[0] = '\0';
num = sscanf(line, "%p: %lX %lX %lX %X %X %d %s",
- &d, &refcnt, &proto, &unix_flags, &type, &state, &inode, path);
+ &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 (!has_inode)
+ sprintf(path, "%d", inode);
if ((flags & (NETSTAT_LISTENING|NETSTAT_CONNECTED)) != (NETSTAT_LISTENING|NETSTAT_CONNECTED)) {
if ((state == SS_UNCONNECTED) && (unix_flags & SO_ACCEPTCON)) {
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);
+ if (has_inode)
+ printf("%-6d ", inode);
else
printf("- ");
puts(path);
* Our main function.
*/
+int netstat_main(int argc, char **argv);
int netstat_main(int argc, char **argv)
{
- enum {
- OPT_extended = 0x4,
- OPT_showroute = 0x100,
- };
+ const char *net_conn_line_header = PRINT_NET_CONN_HEADER;
unsigned opt;
#if ENABLE_FEATURE_IPV6
- int inet = 1;
- int inet6 = 1;
+ smallint inet = 1;
+ smallint inet6 = 1;
#else
enum { inet = 1, inet6 = 0 };
#endif
/* Option string must match NETSTAT_xxx constants */
- opt = getopt32(argc, argv, "laentuwxr");
+ opt = getopt32(argv, NETSTAT_OPTS);
if (opt & 0x1) { // -l
flags &= ~NETSTAT_CONNECTED;
flags |= NETSTAT_LISTENING;
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 (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;
printf("(only servers)");
else
printf("(w/o servers)");
- printf("\nProto Recv-Q Send-Q Local Address Foreign Address State\n");
+ 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);
projects / oweals / busybox.git / blobdiff