[821] | 1 | /* vi: set sw=4 ts=4: */
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| 2 | /*
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| 3 | * Mini netstat implementation(s) for busybox
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| 4 | * based in part on the netstat implementation from net-tools.
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| 5 | *
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| 6 | * Copyright (C) 2002 by Bart Visscher <magick@linux-fan.com>
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| 7 | *
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| 8 | * This program is free software; you can redistribute it and/or modify
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| 9 | * it under the terms of the GNU General Public License as published by
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| 10 | * the Free Software Foundation; either version 2 of the License, or
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| 11 | * (at your option) any later version.
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| 12 | *
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| 13 | * This program is distributed in the hope that it will be useful,
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| 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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| 16 | * General Public License for more details.
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| 17 | *
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| 18 | * You should have received a copy of the GNU General Public License
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| 19 | * along with this program; if not, write to the Free Software
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| 20 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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| 21 | *
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| 22 | * 2002-04-20
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| 23 | * IPV6 support added by Bart Visscher <magick@linux-fan.com>
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| 24 | */
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| 25 |
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| 26 | #include <stdio.h>
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| 27 | #include <stdlib.h>
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| 28 | #include <string.h>
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| 29 | #include <stdarg.h>
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| 30 | #include <signal.h>
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| 31 | #include <errno.h>
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| 32 | #include <sys/stat.h>
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| 33 | #include <dirent.h>
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| 34 | #include <unistd.h>
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| 35 | #include "inet_common.h"
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| 36 | #include "busybox.h"
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| 37 | #include "pwd_.h"
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| 38 |
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| 39 | #ifdef CONFIG_ROUTE
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| 40 | extern void displayroutes(int noresolve, int netstatfmt);
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| 41 | #endif
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| 42 |
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| 43 | #define NETSTAT_CONNECTED 0x01
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| 44 | #define NETSTAT_LISTENING 0x02
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| 45 | #define NETSTAT_NUMERIC 0x04
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| 46 | #define NETSTAT_TCP 0x10
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| 47 | #define NETSTAT_UDP 0x20
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| 48 | #define NETSTAT_RAW 0x40
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| 49 | #define NETSTAT_UNIX 0x80
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| 50 |
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| 51 | static int flags = NETSTAT_CONNECTED |
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| 52 | NETSTAT_TCP | NETSTAT_UDP | NETSTAT_RAW | NETSTAT_UNIX;
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| 53 |
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| 54 | #define PROGNAME_WIDTHs PROGNAME_WIDTH1(PROGNAME_WIDTH)
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| 55 | #define PROGNAME_WIDTH1(s) PROGNAME_WIDTH2(s)
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| 56 | #define PROGNAME_WIDTH2(s) #s
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| 57 |
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| 58 | #define PRG_HASH_SIZE 211
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| 59 |
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| 60 | enum {
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| 61 | TCP_ESTABLISHED = 1,
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| 62 | TCP_SYN_SENT,
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| 63 | TCP_SYN_RECV,
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| 64 | TCP_FIN_WAIT1,
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| 65 | TCP_FIN_WAIT2,
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| 66 | TCP_TIME_WAIT,
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| 67 | TCP_CLOSE,
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| 68 | TCP_CLOSE_WAIT,
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| 69 | TCP_LAST_ACK,
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| 70 | TCP_LISTEN,
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| 71 | TCP_CLOSING /* now a valid state */
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| 72 | };
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| 73 |
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| 74 | static const char * const tcp_state[] =
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| 75 | {
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| 76 | "",
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| 77 | "ESTABLISHED",
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| 78 | "SYN_SENT",
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| 79 | "SYN_RECV",
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| 80 | "FIN_WAIT1",
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| 81 | "FIN_WAIT2",
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| 82 | "TIME_WAIT",
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| 83 | "CLOSE",
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| 84 | "CLOSE_WAIT",
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| 85 | "LAST_ACK",
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| 86 | "LISTEN",
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| 87 | "CLOSING"
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| 88 | };
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| 89 |
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| 90 | typedef enum {
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| 91 | SS_FREE = 0, /* not allocated */
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| 92 | SS_UNCONNECTED, /* unconnected to any socket */
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| 93 | SS_CONNECTING, /* in process of connecting */
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| 94 | SS_CONNECTED, /* connected to socket */
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| 95 | SS_DISCONNECTING /* in process of disconnecting */
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| 96 | } socket_state;
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| 97 |
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| 98 | #define SO_ACCEPTCON (1<<16) /* performed a listen */
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| 99 | #define SO_WAITDATA (1<<17) /* wait data to read */
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| 100 | #define SO_NOSPACE (1<<18) /* no space to write */
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| 101 |
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| 102 | static char *itoa(unsigned int i)
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| 103 | {
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| 104 | /* 21 digits plus null terminator, good for 64-bit or smaller ints */
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| 105 | static char local[22];
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| 106 | char *p = &local[21];
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| 107 | *p-- = '\0';
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| 108 | do {
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| 109 | *p-- = '0' + i % 10;
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| 110 | i /= 10;
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| 111 | } while (i > 0);
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| 112 | return p + 1;
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| 113 | }
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| 114 |
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| 115 | static char *get_sname(int port, const char *proto, int num)
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| 116 | {
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| 117 | char *str=itoa(ntohs(port));
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| 118 | if (num) {
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| 119 | } else {
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| 120 | struct servent *se=getservbyport(port,proto);
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| 121 | if (se)
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| 122 | str=se->s_name;
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| 123 | }
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| 124 | if (!port) {
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| 125 | str="*";
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| 126 | }
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| 127 | return str;
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| 128 | }
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| 129 |
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| 130 | static void snprint_ip_port(char *ip_port, int size, struct sockaddr *addr, int port, char *proto, int numeric)
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| 131 | {
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| 132 | char *port_name;
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| 133 |
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| 134 | #ifdef CONFIG_FEATURE_IPV6
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| 135 | if (addr->sa_family == AF_INET6) {
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| 136 | INET6_rresolve(ip_port, size, (struct sockaddr_in6 *)addr,
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| 137 | (numeric&NETSTAT_NUMERIC) ? 0x0fff : 0);
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| 138 | } else
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| 139 | #endif
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| 140 | {
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| 141 | INET_rresolve(ip_port, size, (struct sockaddr_in *)addr,
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| 142 | 0x4000 | ((numeric&NETSTAT_NUMERIC) ? 0x0fff : 0),
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| 143 | 0xffffffff);
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| 144 | }
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| 145 | port_name=get_sname(htons(port), proto, numeric);
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| 146 | if ((strlen(ip_port) + strlen(port_name)) > 22)
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| 147 | ip_port[22 - strlen(port_name)] = '\0';
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| 148 | ip_port+=strlen(ip_port);
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| 149 | strcat(ip_port, ":");
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| 150 | strcat(ip_port, port_name);
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| 151 | }
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| 152 |
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| 153 | static void tcp_do_one(int lnr, const char *line)
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| 154 | {
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| 155 | char local_addr[64], rem_addr[64];
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| 156 | const char *state_str;
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| 157 | char more[512];
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| 158 | int num, local_port, rem_port, d, state, timer_run, uid, timeout;
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| 159 | #ifdef CONFIG_FEATURE_IPV6
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| 160 | struct sockaddr_in6 localaddr, remaddr;
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| 161 | char addr6[INET6_ADDRSTRLEN];
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| 162 | struct in6_addr in6;
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| 163 | #else
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| 164 | struct sockaddr_in localaddr, remaddr;
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| 165 | #endif
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| 166 | unsigned long rxq, txq, time_len, retr, inode;
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| 167 |
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| 168 | if (lnr == 0)
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| 169 | return;
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| 170 |
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| 171 | more[0] = '\0';
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| 172 | num = sscanf(line,
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| 173 | "%d: %64[0-9A-Fa-f]:%X %64[0-9A-Fa-f]:%X %X %lX:%lX %X:%lX %lX %d %d %ld %512s\n",
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| 174 | &d, local_addr, &local_port,
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| 175 | rem_addr, &rem_port, &state,
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| 176 | &txq, &rxq, &timer_run, &time_len, &retr, &uid, &timeout, &inode, more);
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| 177 |
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| 178 | if (strlen(local_addr) > 8) {
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| 179 | #ifdef CONFIG_FEATURE_IPV6
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| 180 | sscanf(local_addr, "%08X%08X%08X%08X",
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| 181 | &in6.s6_addr32[0], &in6.s6_addr32[1],
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| 182 | &in6.s6_addr32[2], &in6.s6_addr32[3]);
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| 183 | inet_ntop(AF_INET6, &in6, addr6, sizeof(addr6));
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| 184 | inet_pton(AF_INET6, addr6, (struct sockaddr *) &localaddr.sin6_addr);
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| 185 | sscanf(rem_addr, "%08X%08X%08X%08X",
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| 186 | &in6.s6_addr32[0], &in6.s6_addr32[1],
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| 187 | &in6.s6_addr32[2], &in6.s6_addr32[3]);
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| 188 | inet_ntop(AF_INET6, &in6, addr6, sizeof(addr6));
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| 189 | inet_pton(AF_INET6, addr6, (struct sockaddr *) &remaddr.sin6_addr);
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| 190 | localaddr.sin6_family = AF_INET6;
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| 191 | remaddr.sin6_family = AF_INET6;
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| 192 | #endif
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| 193 | } else {
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| 194 | sscanf(local_addr, "%X",
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| 195 | &((struct sockaddr_in *) &localaddr)->sin_addr.s_addr);
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| 196 | sscanf(rem_addr, "%X",
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| 197 | &((struct sockaddr_in *) &remaddr)->sin_addr.s_addr);
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| 198 | ((struct sockaddr *) &localaddr)->sa_family = AF_INET;
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| 199 | ((struct sockaddr *) &remaddr)->sa_family = AF_INET;
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| 200 | }
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| 201 |
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| 202 | if (num < 10) {
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| 203 | bb_error_msg("warning, got bogus tcp line.");
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| 204 | return;
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| 205 | }
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| 206 | state_str = tcp_state[state];
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| 207 | if ((rem_port && (flags&NETSTAT_CONNECTED)) ||
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| 208 | (!rem_port && (flags&NETSTAT_LISTENING)))
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| 209 | {
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| 210 | snprint_ip_port(local_addr, sizeof(local_addr),
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| 211 | (struct sockaddr *) &localaddr, local_port,
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| 212 | "tcp", flags&NETSTAT_NUMERIC);
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| 213 |
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| 214 | snprint_ip_port(rem_addr, sizeof(rem_addr),
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| 215 | (struct sockaddr *) &remaddr, rem_port,
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| 216 | "tcp", flags&NETSTAT_NUMERIC);
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| 217 |
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| 218 | printf("tcp %6ld %6ld %-23s %-23s %-12s\n",
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| 219 | rxq, txq, local_addr, rem_addr, state_str);
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| 220 |
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| 221 | }
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| 222 | }
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| 223 |
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| 224 | static void udp_do_one(int lnr, const char *line)
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| 225 | {
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| 226 | char local_addr[64], rem_addr[64];
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| 227 | char *state_str, more[512];
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| 228 | int num, local_port, rem_port, d, state, timer_run, uid, timeout;
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| 229 | #ifdef CONFIG_FEATURE_IPV6
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| 230 | struct sockaddr_in6 localaddr, remaddr;
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| 231 | char addr6[INET6_ADDRSTRLEN];
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| 232 | struct in6_addr in6;
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| 233 | #else
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| 234 | struct sockaddr_in localaddr, remaddr;
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| 235 | #endif
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| 236 | unsigned long rxq, txq, time_len, retr, inode;
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| 237 |
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| 238 | if (lnr == 0)
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| 239 | return;
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| 240 |
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| 241 | more[0] = '\0';
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| 242 | num = sscanf(line,
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| 243 | "%d: %64[0-9A-Fa-f]:%X %64[0-9A-Fa-f]:%X %X %lX:%lX %X:%lX %lX %d %d %ld %512s\n",
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| 244 | &d, local_addr, &local_port,
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| 245 | rem_addr, &rem_port, &state,
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| 246 | &txq, &rxq, &timer_run, &time_len, &retr, &uid, &timeout, &inode, more);
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| 247 |
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| 248 | if (strlen(local_addr) > 8) {
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| 249 | #ifdef CONFIG_FEATURE_IPV6
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| 250 | /* Demangle what the kernel gives us */
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| 251 | sscanf(local_addr, "%08X%08X%08X%08X",
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| 252 | &in6.s6_addr32[0], &in6.s6_addr32[1],
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| 253 | &in6.s6_addr32[2], &in6.s6_addr32[3]);
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| 254 | inet_ntop(AF_INET6, &in6, addr6, sizeof(addr6));
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| 255 | inet_pton(AF_INET6, addr6, (struct sockaddr *) &localaddr.sin6_addr);
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| 256 | sscanf(rem_addr, "%08X%08X%08X%08X",
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| 257 | &in6.s6_addr32[0], &in6.s6_addr32[1],
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| 258 | &in6.s6_addr32[2], &in6.s6_addr32[3]);
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| 259 | inet_ntop(AF_INET6, &in6, addr6, sizeof(addr6));
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| 260 | inet_pton(AF_INET6, addr6, (struct sockaddr *) &remaddr.sin6_addr);
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| 261 | localaddr.sin6_family = AF_INET6;
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| 262 | remaddr.sin6_family = AF_INET6;
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| 263 | #endif
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| 264 | } else {
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| 265 | sscanf(local_addr, "%X",
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| 266 | &((struct sockaddr_in *) &localaddr)->sin_addr.s_addr);
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| 267 | sscanf(rem_addr, "%X",
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| 268 | &((struct sockaddr_in *) &remaddr)->sin_addr.s_addr);
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| 269 | ((struct sockaddr *) &localaddr)->sa_family = AF_INET;
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| 270 | ((struct sockaddr *) &remaddr)->sa_family = AF_INET;
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| 271 | }
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| 272 |
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| 273 | if (num < 10) {
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| 274 | bb_error_msg("warning, got bogus udp line.");
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| 275 | return;
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| 276 | }
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| 277 | switch (state) {
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| 278 | case TCP_ESTABLISHED:
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| 279 | state_str = "ESTABLISHED";
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| 280 | break;
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| 281 |
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| 282 | case TCP_CLOSE:
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| 283 | state_str = "";
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| 284 | break;
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| 285 |
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| 286 | default:
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| 287 | state_str = "UNKNOWN";
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| 288 | break;
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| 289 | }
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| 290 |
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| 291 | #ifdef CONFIG_FEATURE_IPV6
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| 292 | # define notnull(A) (((A.sin6_family == AF_INET6) && \
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| 293 | ((A.sin6_addr.s6_addr32[0]) || \
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| 294 | (A.sin6_addr.s6_addr32[1]) || \
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| 295 | (A.sin6_addr.s6_addr32[2]) || \
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| 296 | (A.sin6_addr.s6_addr32[3]))) || \
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| 297 | ((A.sin6_family == AF_INET) && \
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| 298 | ((struct sockaddr_in *) &A)->sin_addr.s_addr))
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| 299 | #else
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| 300 | # define notnull(A) (A.sin_addr.s_addr)
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| 301 | #endif
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| 302 | if ((notnull(remaddr) && (flags&NETSTAT_CONNECTED)) ||
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| 303 | (!notnull(remaddr) && (flags&NETSTAT_LISTENING)))
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| 304 | {
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| 305 | snprint_ip_port(local_addr, sizeof(local_addr),
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| 306 | (struct sockaddr *) &localaddr, local_port,
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| 307 | "udp", flags&NETSTAT_NUMERIC);
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| 308 |
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| 309 | snprint_ip_port(rem_addr, sizeof(rem_addr),
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| 310 | (struct sockaddr *) &remaddr, rem_port,
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| 311 | "udp", flags&NETSTAT_NUMERIC);
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| 312 |
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| 313 | printf("udp %6ld %6ld %-23s %-23s %-12s\n",
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| 314 | rxq, txq, local_addr, rem_addr, state_str);
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| 315 |
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| 316 | }
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| 317 | }
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| 318 |
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| 319 | static void raw_do_one(int lnr, const char *line)
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| 320 | {
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| 321 | char local_addr[64], rem_addr[64];
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| 322 | char *state_str, more[512];
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| 323 | int num, local_port, rem_port, d, state, timer_run, uid, timeout;
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| 324 | #ifdef CONFIG_FEATURE_IPV6
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| 325 | struct sockaddr_in6 localaddr, remaddr;
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| 326 | char addr6[INET6_ADDRSTRLEN];
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| 327 | struct in6_addr in6;
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| 328 | #else
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| 329 | struct sockaddr_in localaddr, remaddr;
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| 330 | #endif
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| 331 | unsigned long rxq, txq, time_len, retr, inode;
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| 332 |
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| 333 | if (lnr == 0)
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| 334 | return;
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| 335 |
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| 336 | more[0] = '\0';
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| 337 | num = sscanf(line,
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| 338 | "%d: %64[0-9A-Fa-f]:%X %64[0-9A-Fa-f]:%X %X %lX:%lX %X:%lX %lX %d %d %ld %512s\n",
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| 339 | &d, local_addr, &local_port,
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| 340 | rem_addr, &rem_port, &state,
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| 341 | &txq, &rxq, &timer_run, &time_len, &retr, &uid, &timeout, &inode, more);
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| 342 |
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| 343 | if (strlen(local_addr) > 8) {
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| 344 | #ifdef CONFIG_FEATURE_IPV6
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| 345 | sscanf(local_addr, "%08X%08X%08X%08X",
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| 346 | &in6.s6_addr32[0], &in6.s6_addr32[1],
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| 347 | &in6.s6_addr32[2], &in6.s6_addr32[3]);
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| 348 | inet_ntop(AF_INET6, &in6, addr6, sizeof(addr6));
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| 349 | inet_pton(AF_INET6, addr6, (struct sockaddr *) &localaddr.sin6_addr);
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| 350 | sscanf(rem_addr, "%08X%08X%08X%08X",
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| 351 | &in6.s6_addr32[0], &in6.s6_addr32[1],
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| 352 | &in6.s6_addr32[2], &in6.s6_addr32[3]);
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| 353 | inet_ntop(AF_INET6, &in6, addr6, sizeof(addr6));
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| 354 | inet_pton(AF_INET6, addr6, (struct sockaddr *) &remaddr.sin6_addr);
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| 355 | localaddr.sin6_family = AF_INET6;
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| 356 | remaddr.sin6_family = AF_INET6;
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| 357 | #endif
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| 358 | } else {
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| 359 | sscanf(local_addr, "%X",
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| 360 | &((struct sockaddr_in *) &localaddr)->sin_addr.s_addr);
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| 361 | sscanf(rem_addr, "%X",
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| 362 | &((struct sockaddr_in *) &remaddr)->sin_addr.s_addr);
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| 363 | ((struct sockaddr *) &localaddr)->sa_family = AF_INET;
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| 364 | ((struct sockaddr *) &remaddr)->sa_family = AF_INET;
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| 365 | }
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| 366 |
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| 367 | if (num < 10) {
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| 368 | bb_error_msg("warning, got bogus raw line.");
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| 369 | return;
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| 370 | }
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| 371 | state_str=itoa(state);
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| 372 |
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| 373 | #ifdef CONFIG_FEATURE_IPV6
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| 374 | # define notnull(A) (((A.sin6_family == AF_INET6) && \
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| 375 | ((A.sin6_addr.s6_addr32[0]) || \
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| 376 | (A.sin6_addr.s6_addr32[1]) || \
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| 377 | (A.sin6_addr.s6_addr32[2]) || \
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| 378 | (A.sin6_addr.s6_addr32[3]))) || \
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| 379 | ((A.sin6_family == AF_INET) && \
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| 380 | ((struct sockaddr_in *) &A)->sin_addr.s_addr))
|
---|
| 381 | #else
|
---|
| 382 | # define notnull(A) (A.sin_addr.s_addr)
|
---|
| 383 | #endif
|
---|
| 384 | if ((notnull(remaddr) && (flags&NETSTAT_CONNECTED)) ||
|
---|
| 385 | (!notnull(remaddr) && (flags&NETSTAT_LISTENING)))
|
---|
| 386 | {
|
---|
| 387 | snprint_ip_port(local_addr, sizeof(local_addr),
|
---|
| 388 | (struct sockaddr *) &localaddr, local_port,
|
---|
| 389 | "raw", flags&NETSTAT_NUMERIC);
|
---|
| 390 |
|
---|
| 391 | snprint_ip_port(rem_addr, sizeof(rem_addr),
|
---|
| 392 | (struct sockaddr *) &remaddr, rem_port,
|
---|
| 393 | "raw", flags&NETSTAT_NUMERIC);
|
---|
| 394 |
|
---|
| 395 | printf("raw %6ld %6ld %-23s %-23s %-12s\n",
|
---|
| 396 | rxq, txq, local_addr, rem_addr, state_str);
|
---|
| 397 |
|
---|
| 398 | }
|
---|
| 399 | }
|
---|
| 400 |
|
---|
| 401 | #define HAS_INODE 1
|
---|
| 402 |
|
---|
| 403 | static void unix_do_one(int nr, const char *line)
|
---|
| 404 | {
|
---|
| 405 | static int has = 0;
|
---|
| 406 | char path[PATH_MAX], ss_flags[32];
|
---|
| 407 | char *ss_proto, *ss_state, *ss_type;
|
---|
| 408 | int num, state, type, inode;
|
---|
| 409 | void *d;
|
---|
| 410 | unsigned long refcnt, proto, unix_flags;
|
---|
| 411 |
|
---|
| 412 | if (nr == 0) {
|
---|
| 413 | if (strstr(line, "Inode"))
|
---|
| 414 | has |= HAS_INODE;
|
---|
| 415 | return;
|
---|
| 416 | }
|
---|
| 417 | path[0] = '\0';
|
---|
| 418 | num = sscanf(line, "%p: %lX %lX %lX %X %X %d %s",
|
---|
| 419 | &d, &refcnt, &proto, &unix_flags, &type, &state, &inode, path);
|
---|
| 420 | if (num < 6) {
|
---|
| 421 | bb_error_msg("warning, got bogus unix line.");
|
---|
| 422 | return;
|
---|
| 423 | }
|
---|
| 424 | if (!(has & HAS_INODE))
|
---|
| 425 | snprintf(path,sizeof(path),"%d",inode);
|
---|
| 426 |
|
---|
| 427 | if ((flags&(NETSTAT_LISTENING|NETSTAT_CONNECTED))!=(NETSTAT_LISTENING|NETSTAT_CONNECTED)) {
|
---|
| 428 | if ((state == SS_UNCONNECTED) && (unix_flags & SO_ACCEPTCON)) {
|
---|
| 429 | if (!(flags&NETSTAT_LISTENING))
|
---|
| 430 | return;
|
---|
| 431 | } else {
|
---|
| 432 | if (!(flags&NETSTAT_CONNECTED))
|
---|
| 433 | return;
|
---|
| 434 | }
|
---|
| 435 | }
|
---|
| 436 |
|
---|
| 437 | switch (proto) {
|
---|
| 438 | case 0:
|
---|
| 439 | ss_proto = "unix";
|
---|
| 440 | break;
|
---|
| 441 |
|
---|
| 442 | default:
|
---|
| 443 | ss_proto = "??";
|
---|
| 444 | }
|
---|
| 445 |
|
---|
| 446 | switch (type) {
|
---|
| 447 | case SOCK_STREAM:
|
---|
| 448 | ss_type = "STREAM";
|
---|
| 449 | break;
|
---|
| 450 |
|
---|
| 451 | case SOCK_DGRAM:
|
---|
| 452 | ss_type = "DGRAM";
|
---|
| 453 | break;
|
---|
| 454 |
|
---|
| 455 | case SOCK_RAW:
|
---|
| 456 | ss_type = "RAW";
|
---|
| 457 | break;
|
---|
| 458 |
|
---|
| 459 | case SOCK_RDM:
|
---|
| 460 | ss_type = "RDM";
|
---|
| 461 | break;
|
---|
| 462 |
|
---|
| 463 | case SOCK_SEQPACKET:
|
---|
| 464 | ss_type = "SEQPACKET";
|
---|
| 465 | break;
|
---|
| 466 |
|
---|
| 467 | default:
|
---|
| 468 | ss_type = "UNKNOWN";
|
---|
| 469 | }
|
---|
| 470 |
|
---|
| 471 | switch (state) {
|
---|
| 472 | case SS_FREE:
|
---|
| 473 | ss_state = "FREE";
|
---|
| 474 | break;
|
---|
| 475 |
|
---|
| 476 | case SS_UNCONNECTED:
|
---|
| 477 | /*
|
---|
| 478 | * Unconnected sockets may be listening
|
---|
| 479 | * for something.
|
---|
| 480 | */
|
---|
| 481 | if (unix_flags & SO_ACCEPTCON) {
|
---|
| 482 | ss_state = "LISTENING";
|
---|
| 483 | } else {
|
---|
| 484 | ss_state = "";
|
---|
| 485 | }
|
---|
| 486 | break;
|
---|
| 487 |
|
---|
| 488 | case SS_CONNECTING:
|
---|
| 489 | ss_state = "CONNECTING";
|
---|
| 490 | break;
|
---|
| 491 |
|
---|
| 492 | case SS_CONNECTED:
|
---|
| 493 | ss_state = "CONNECTED";
|
---|
| 494 | break;
|
---|
| 495 |
|
---|
| 496 | case SS_DISCONNECTING:
|
---|
| 497 | ss_state = "DISCONNECTING";
|
---|
| 498 | break;
|
---|
| 499 |
|
---|
| 500 | default:
|
---|
| 501 | ss_state = "UNKNOWN";
|
---|
| 502 | }
|
---|
| 503 |
|
---|
| 504 | strcpy(ss_flags, "[ ");
|
---|
| 505 | if (unix_flags & SO_ACCEPTCON)
|
---|
| 506 | strcat(ss_flags, "ACC ");
|
---|
| 507 | if (unix_flags & SO_WAITDATA)
|
---|
| 508 | strcat(ss_flags, "W ");
|
---|
| 509 | if (unix_flags & SO_NOSPACE)
|
---|
| 510 | strcat(ss_flags, "N ");
|
---|
| 511 |
|
---|
| 512 | strcat(ss_flags, "]");
|
---|
| 513 |
|
---|
| 514 | printf("%-5s %-6ld %-11s %-10s %-13s ",
|
---|
| 515 | ss_proto, refcnt, ss_flags, ss_type, ss_state);
|
---|
| 516 | if (has & HAS_INODE)
|
---|
| 517 | printf("%-6d ",inode);
|
---|
| 518 | else
|
---|
| 519 | printf("- ");
|
---|
| 520 | puts(path);
|
---|
| 521 | }
|
---|
| 522 |
|
---|
| 523 | #define _PATH_PROCNET_UDP "/proc/net/udp"
|
---|
| 524 | #define _PATH_PROCNET_UDP6 "/proc/net/udp6"
|
---|
| 525 | #define _PATH_PROCNET_TCP "/proc/net/tcp"
|
---|
| 526 | #define _PATH_PROCNET_TCP6 "/proc/net/tcp6"
|
---|
| 527 | #define _PATH_PROCNET_RAW "/proc/net/raw"
|
---|
| 528 | #define _PATH_PROCNET_RAW6 "/proc/net/raw6"
|
---|
| 529 | #define _PATH_PROCNET_UNIX "/proc/net/unix"
|
---|
| 530 |
|
---|
| 531 | static void do_info(const char *file, const char *name, void (*proc)(int, const char *))
|
---|
| 532 | {
|
---|
| 533 | char buffer[8192];
|
---|
| 534 | int lnr = 0;
|
---|
| 535 | FILE *procinfo;
|
---|
| 536 |
|
---|
| 537 | procinfo = fopen(file, "r");
|
---|
| 538 | if (procinfo == NULL) {
|
---|
| 539 | if (errno != ENOENT) {
|
---|
| 540 | perror(file);
|
---|
| 541 | } else {
|
---|
| 542 | bb_error_msg("no support for `%s' on this system.", name);
|
---|
| 543 | }
|
---|
| 544 | } else {
|
---|
| 545 | do {
|
---|
| 546 | if (fgets(buffer, sizeof(buffer), procinfo))
|
---|
| 547 | (proc)(lnr++, buffer);
|
---|
| 548 | } while (!feof(procinfo));
|
---|
| 549 | fclose(procinfo);
|
---|
| 550 | }
|
---|
| 551 | }
|
---|
| 552 |
|
---|
| 553 | /*
|
---|
| 554 | * Our main function.
|
---|
| 555 | */
|
---|
| 556 |
|
---|
| 557 | int netstat_main(int argc, char **argv)
|
---|
| 558 | {
|
---|
| 559 | int opt;
|
---|
| 560 | int new_flags=0;
|
---|
| 561 | int showroute = 0, extended = 0;
|
---|
| 562 | #ifdef CONFIG_FEATURE_IPV6
|
---|
| 563 | int inet=1;
|
---|
| 564 | int inet6=1;
|
---|
| 565 | #else
|
---|
| 566 | # define inet 1
|
---|
| 567 | # define inet6 0
|
---|
| 568 | #endif
|
---|
| 569 | while ((opt = getopt(argc, argv, "laenrtuwx")) != -1)
|
---|
| 570 | switch (opt) {
|
---|
| 571 | case 'l':
|
---|
| 572 | flags &= ~NETSTAT_CONNECTED;
|
---|
| 573 | flags |= NETSTAT_LISTENING;
|
---|
| 574 | break;
|
---|
| 575 | case 'a':
|
---|
| 576 | flags |= NETSTAT_LISTENING | NETSTAT_CONNECTED;
|
---|
| 577 | break;
|
---|
| 578 | case 'n':
|
---|
| 579 | flags |= NETSTAT_NUMERIC;
|
---|
| 580 | break;
|
---|
| 581 | case 'r':
|
---|
| 582 | showroute = 1;
|
---|
| 583 | break;
|
---|
| 584 | case 'e':
|
---|
| 585 | extended = 1;
|
---|
| 586 | break;
|
---|
| 587 | case 't':
|
---|
| 588 | new_flags |= NETSTAT_TCP;
|
---|
| 589 | break;
|
---|
| 590 | case 'u':
|
---|
| 591 | new_flags |= NETSTAT_UDP;
|
---|
| 592 | break;
|
---|
| 593 | case 'w':
|
---|
| 594 | new_flags |= NETSTAT_RAW;
|
---|
| 595 | break;
|
---|
| 596 | case 'x':
|
---|
| 597 | new_flags |= NETSTAT_UNIX;
|
---|
| 598 | break;
|
---|
| 599 | default:
|
---|
| 600 | bb_show_usage();
|
---|
| 601 | }
|
---|
| 602 | if ( showroute ) {
|
---|
| 603 | #ifdef CONFIG_ROUTE
|
---|
| 604 | displayroutes ( flags & NETSTAT_NUMERIC, !extended );
|
---|
| 605 | return 0;
|
---|
| 606 | #else
|
---|
| 607 | bb_error_msg_and_die( "-r (display routing table) is not compiled in." );
|
---|
| 608 | #endif
|
---|
| 609 | }
|
---|
| 610 |
|
---|
| 611 | if (new_flags) {
|
---|
| 612 | flags &= ~(NETSTAT_TCP|NETSTAT_UDP|NETSTAT_RAW|NETSTAT_UNIX);
|
---|
| 613 | flags |= new_flags;
|
---|
| 614 | }
|
---|
| 615 | if (flags&(NETSTAT_TCP|NETSTAT_UDP|NETSTAT_RAW)) {
|
---|
| 616 | printf("Active Internet connections "); /* xxx */
|
---|
| 617 |
|
---|
| 618 | if ((flags&(NETSTAT_LISTENING|NETSTAT_CONNECTED))==(NETSTAT_LISTENING|NETSTAT_CONNECTED))
|
---|
| 619 | printf("(servers and established)");
|
---|
| 620 | else {
|
---|
| 621 | if (flags&NETSTAT_LISTENING)
|
---|
| 622 | printf("(only servers)");
|
---|
| 623 | else
|
---|
| 624 | printf("(w/o servers)");
|
---|
| 625 | }
|
---|
| 626 | printf("\nProto Recv-Q Send-Q Local Address Foreign Address State \n");
|
---|
| 627 | }
|
---|
| 628 | if (inet && flags&NETSTAT_TCP)
|
---|
| 629 | do_info(_PATH_PROCNET_TCP,"AF INET (tcp)",tcp_do_one);
|
---|
| 630 | #ifdef CONFIG_FEATURE_IPV6
|
---|
| 631 | if (inet6 && flags&NETSTAT_TCP)
|
---|
| 632 | do_info(_PATH_PROCNET_TCP6,"AF INET6 (tcp)",tcp_do_one);
|
---|
| 633 | #endif
|
---|
| 634 | if (inet && flags&NETSTAT_UDP)
|
---|
| 635 | do_info(_PATH_PROCNET_UDP,"AF INET (udp)",udp_do_one);
|
---|
| 636 | #ifdef CONFIG_FEATURE_IPV6
|
---|
| 637 | if (inet6 && flags&NETSTAT_UDP)
|
---|
| 638 | do_info(_PATH_PROCNET_UDP6,"AF INET6 (udp)",udp_do_one);
|
---|
| 639 | #endif
|
---|
| 640 | if (inet && flags&NETSTAT_RAW)
|
---|
| 641 | do_info(_PATH_PROCNET_RAW,"AF INET (raw)",raw_do_one);
|
---|
| 642 | #ifdef CONFIG_FEATURE_IPV6
|
---|
| 643 | if (inet6 && flags&NETSTAT_RAW)
|
---|
| 644 | do_info(_PATH_PROCNET_RAW6,"AF INET6 (raw)",raw_do_one);
|
---|
| 645 | #endif
|
---|
| 646 | if (flags&NETSTAT_UNIX) {
|
---|
| 647 | printf("Active UNIX domain sockets ");
|
---|
| 648 | if ((flags&(NETSTAT_LISTENING|NETSTAT_CONNECTED))==(NETSTAT_LISTENING|NETSTAT_CONNECTED))
|
---|
| 649 | printf("(servers and established)");
|
---|
| 650 | else {
|
---|
| 651 | if (flags&NETSTAT_LISTENING)
|
---|
| 652 | printf("(only servers)");
|
---|
| 653 | else
|
---|
| 654 | printf("(w/o servers)");
|
---|
| 655 | }
|
---|
| 656 |
|
---|
| 657 | printf("\nProto RefCnt Flags Type State I-Node Path\n");
|
---|
| 658 | do_info(_PATH_PROCNET_UNIX,"AF UNIX",unix_do_one);
|
---|
| 659 | }
|
---|
| 660 | return 0;
|
---|
| 661 | }
|
---|