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Diffstat (limited to 'i/pc104/initrd/conf/busybox/networking/netstat.c')
-rw-r--r--i/pc104/initrd/conf/busybox/networking/netstat.c596
1 files changed, 596 insertions, 0 deletions
diff --git a/i/pc104/initrd/conf/busybox/networking/netstat.c b/i/pc104/initrd/conf/busybox/networking/netstat.c
new file mode 100644
index 0000000..d89d3aa
--- /dev/null
+++ b/i/pc104/initrd/conf/busybox/networking/netstat.c
@@ -0,0 +1,596 @@
+/* vi: set sw=4 ts=4: */
+/*
+ * Mini netstat implementation(s) for busybox
+ * based in part on the netstat implementation from net-tools.
+ *
+ * Copyright (C) 2002 by Bart Visscher <magick@linux-fan.com>
+ *
+ * 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 "busybox.h"
+#include "inet_common.h"
+
+#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)
+
+static int 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 */
+};
+
+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 */
+} 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 */
+
+static const char *get_sname(int port, const char *proto, int num)
+{
+ /* hummm, we return static buffer here!! */
+ const char *str = itoa(ntohs(port));
+ if (!num) {
+ struct servent *se = getservbyport(port, proto);
+ if (se)
+ str = se->s_name;
+ }
+ if (!port) {
+ str = "*";
+ }
+ return str;
+}
+
+static void snprint_ip_port(char *ip_port, int size, struct sockaddr *addr, int port, const char *proto, int numeric)
+{
+ const char *port_name;
+
+#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);
+}
+
+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
+ unsigned long rxq, txq, time_len, retr, inode;
+
+ if (lnr == 0)
+ return;
+
+ 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);
+
+ 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;
+#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;
+ }
+
+ 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);
+ }
+}
+
+static void udp_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
+ unsigned long rxq, txq, time_len, retr, inode;
+
+ if (lnr == 0)
+ return;
+
+ 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);
+
+ 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;
+#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;
+ }
+
+ if (num < 10) {
+ bb_error_msg("warning, got bogus udp line");
+ return;
+ }
+ switch (state) {
+ 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))
+#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);
+ }
+}
+
+static void raw_do_one(int lnr, const char *line)
+{
+ char local_addr[64], rem_addr[64];
+ char *state_str, 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
+ unsigned long rxq, txq, time_len, retr, inode;
+
+ if (lnr == 0)
+ return;
+
+ 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);
+
+ 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;
+#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;
+ }
+
+ 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);
+ }
+}
+
+#define HAS_INODE 1
+
+static void unix_do_one(int nr, const char *line)
+{
+ static int has = 0;
+ char path[PATH_MAX], ss_flags[32];
+ const char *ss_proto, *ss_state, *ss_type;
+ int num, state, type, inode;
+ void *d;
+ unsigned long refcnt, proto, unix_flags;
+
+ 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 ((flags & (NETSTAT_LISTENING|NETSTAT_CONNECTED)) != (NETSTAT_LISTENING|NETSTAT_CONNECTED)) {
+ if ((state == SS_UNCONNECTED) && (unix_flags & SO_ACCEPTCON)) {
+ if (!(flags & NETSTAT_LISTENING))
+ return;
+ } else {
+ if (!(flags & NETSTAT_CONNECTED))
+ return;
+ }
+ }
+
+ switch (proto) {
+ case 0:
+ ss_proto = "unix";
+ break;
+
+ default:
+ ss_proto = "??";
+ }
+
+ switch (type) {
+ 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";
+ }
+
+ switch (state) {
+ case SS_FREE:
+ ss_state = "FREE";
+ break;
+
+ case SS_UNCONNECTED:
+ /*
+ * Unconnected sockets may be listening
+ * for something.
+ */
+ if (unix_flags & SO_ACCEPTCON) {
+ ss_state = "LISTENING";
+ } else {
+ 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";
+ }
+
+ strcpy(ss_flags, "[ ");
+ if (unix_flags & SO_ACCEPTCON)
+ strcat(ss_flags, "ACC ");
+ if (unix_flags & SO_WAITDATA)
+ 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);
+}
+
+#define _PATH_PROCNET_UDP "/proc/net/udp"
+#define _PATH_PROCNET_UDP6 "/proc/net/udp6"
+#define _PATH_PROCNET_TCP "/proc/net/tcp"
+#define _PATH_PROCNET_TCP6 "/proc/net/tcp6"
+#define _PATH_PROCNET_RAW "/proc/net/raw"
+#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 *))
+{
+ int lnr = 0;
+ FILE *procinfo;
+
+ procinfo = fopen(file, "r");
+ if (procinfo == NULL) {
+ if (errno != ENOENT) {
+ bb_perror_msg("%s", file);
+ } else {
+ bb_error_msg("no support for '%s' on this system", name);
+ }
+ return;
+ }
+ do {
+ char *buffer = xmalloc_fgets(procinfo);
+ if (buffer) {
+ (proc)(lnr++, buffer);
+ free(buffer);
+ }
+ } while (!feof(procinfo));
+ fclose(procinfo);
+}
+
+/*
+ * Our main function.
+ */
+
+int netstat_main(int argc, char **argv);
+int netstat_main(int argc, char **argv)
+{
+ enum {
+ OPT_extended = 0x4,
+ OPT_showroute = 0x100,
+ };
+ unsigned opt;
+#if ENABLE_FEATURE_IPV6
+ int inet = 1;
+ int inet6 = 1;
+#else
+ enum { inet = 1, inet6 = 0 };
+#endif
+
+ /* Option string must match NETSTAT_xxx constants */
+ opt = getopt32(argc, argv, "laentuwxr");
+ 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");
+#endif
+ }
+
+ opt &= NETSTAT_ALLPROTO;
+ if (opt) {
+ flags &= ~NETSTAT_ALLPROTO;
+ flags |= opt;
+ }
+ if (flags & (NETSTAT_TCP|NETSTAT_UDP|NETSTAT_RAW)) {
+ printf("Active Internet connections "); /* xxx */
+
+ 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");
+ }
+ 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);
+#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);
+#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) {
+ printf("Active UNIX domain sockets ");
+ 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 RefCnt Flags Type State I-Node Path\n");
+ do_info(_PATH_PROCNET_UNIX, "AF UNIX", unix_do_one);
+ }
+ return 0;
+}