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Diffstat (limited to 'release/src/router/busybox/ifconfig.c')
-rw-r--r--release/src/router/busybox/ifconfig.c504
1 files changed, 0 insertions, 504 deletions
diff --git a/release/src/router/busybox/ifconfig.c b/release/src/router/busybox/ifconfig.c
deleted file mode 100644
index a6175390..00000000
--- a/release/src/router/busybox/ifconfig.c
+++ /dev/null
@@ -1,504 +0,0 @@
-/* ifconfig
- *
- * Similar to the standard Unix ifconfig, but with only the necessary
- * parts for AF_INET, and without any printing of if info (for now).
- *
- * Bjorn Wesen, Axis Communications AB
- *
- *
- * Authors of the original ifconfig was:
- * Fred N. van Kempen, <waltje@uwalt.nl.mugnet.org>
- *
- * 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.
- *
- * $Id: ifconfig.c,v 1.1.1.4 2003/10/14 08:09:38 sparq Exp $
- *
- */
-
-/*
- * Heavily modified by Manuel Novoa III Mar 6, 2001
- *
- * From initial port to busybox, removed most of the redundancy by
- * converting to a table-driven approach. Added several (optional)
- * args missing from initial port.
- *
- * Still missing: media, tunnel.
- */
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h> // strcmp and friends
-#include <ctype.h> // isdigit and friends
-#include <stddef.h> /* offsetof */
-#include <sys/types.h>
-#include <sys/socket.h>
-#include <sys/ioctl.h>
-#include <netinet/in.h>
-#include <arpa/inet.h>
-#include <net/if.h>
-#include <net/if_arp.h>
-#include <linux/if_ether.h>
-#include "busybox.h"
-
-#ifdef BB_FEATURE_IFCONFIG_SLIP
-#include <linux/if_slip.h>
-#endif
-
-/* I don't know if this is needed for busybox or not. Anyone? */
-#define QUESTIONABLE_ALIAS_CASE
-
-
-/* Defines for glibc2.0 users. */
-#ifndef SIOCSIFTXQLEN
-#define SIOCSIFTXQLEN 0x8943
-#define SIOCGIFTXQLEN 0x8942
-#endif
-
-/* ifr_qlen is ifru_ivalue, but it isn't present in 2.0 kernel headers */
-#ifndef ifr_qlen
-#define ifr_qlen ifr_ifru.ifru_mtu
-#endif
-
-#ifndef IFF_DYNAMIC
-#define IFF_DYNAMIC 0x8000 /* dialup device with changing addresses */
-#endif
-
-/*
- * Here are the bit masks for the "flags" member of struct options below.
- * N_ signifies no arg prefix; M_ signifies arg prefixed by '-'.
- * CLR clears the flag; SET sets the flag; ARG signifies (optional) arg.
- */
-#define N_CLR 0x01
-#define M_CLR 0x02
-#define N_SET 0x04
-#define M_SET 0x08
-#define N_ARG 0x10
-#define M_ARG 0x20
-
-#define M_MASK (M_CLR | M_SET | M_ARG)
-#define N_MASK (N_CLR | N_SET | N_ARG)
-#define SET_MASK (N_SET | M_SET)
-#define CLR_MASK (N_CLR | M_CLR)
-#define SET_CLR_MASK (SET_MASK | CLR_MASK)
-#define ARG_MASK (M_ARG | N_ARG)
-
-/*
- * Here are the bit masks for the "arg_flags" member of struct options below.
- */
-
-/*
- * cast type:
- * 00 int
- * 01 char *
- * 02 HOST_COPY in_ether
- * 03 HOST_COPY INET_resolve
- */
-#define A_CAST_TYPE 0x03
-/*
- * map type:
- * 00 not a map type (mem_start, io_addr, irq)
- * 04 memstart (unsigned long)
- * 08 io_addr (unsigned short)
- * 0C irq (unsigned char)
- */
-#define A_MAP_TYPE 0x0C
-#define A_ARG_REQ 0x10 /* Set if an arg is required. */
-#define A_NETMASK 0x20 /* Set if netmask (check for multiple sets). */
-#define A_SET_AFTER 0x40 /* Set a flag at the end. */
-#define A_COLON_CHK 0x80 /* Is this needed? See below. */
-#define A_HOSTNAME 0x100 /* Set if it is ip addr. */
-#define A_BROADCAST 0x200 /* Set if it is broadcast addr. */
-
-/*
- * These defines are for dealing with the A_CAST_TYPE field.
- */
-#define A_CAST_CHAR_PTR 0x01
-#define A_CAST_RESOLVE 0x01
-#define A_CAST_HOST_COPY 0x02
-#define A_CAST_HOST_COPY_IN_ETHER A_CAST_HOST_COPY
-#define A_CAST_HOST_COPY_RESOLVE (A_CAST_HOST_COPY | A_CAST_RESOLVE)
-
-/*
- * These defines are for dealing with the A_MAP_TYPE field.
- */
-#define A_MAP_ULONG 0x04 /* memstart */
-#define A_MAP_USHORT 0x08 /* io_addr */
-#define A_MAP_UCHAR 0x0C /* irq */
-
-/*
- * Define the bit masks signifying which operations to perform for each arg.
- */
-
-#define ARG_METRIC (A_ARG_REQ /*| A_CAST_INT*/)
-#define ARG_MTU (A_ARG_REQ /*| A_CAST_INT*/)
-#define ARG_TXQUEUELEN (A_ARG_REQ /*| A_CAST_INT*/)
-#define ARG_MEM_START (A_ARG_REQ | A_MAP_ULONG)
-#define ARG_IO_ADDR (A_ARG_REQ | A_MAP_USHORT)
-#define ARG_IRQ (A_ARG_REQ | A_MAP_UCHAR)
-#define ARG_DSTADDR (A_ARG_REQ | A_CAST_HOST_COPY_RESOLVE)
-#define ARG_NETMASK (A_ARG_REQ | A_CAST_HOST_COPY_RESOLVE | A_NETMASK)
-#define ARG_BROADCAST (A_ARG_REQ | A_CAST_HOST_COPY_RESOLVE | A_SET_AFTER | A_BROADCAST)
-#define ARG_HW (A_ARG_REQ | A_CAST_HOST_COPY_IN_ETHER)
-#define ARG_POINTOPOINT (A_CAST_HOST_COPY_RESOLVE | A_SET_AFTER)
-#define ARG_KEEPALIVE (A_ARG_REQ | A_CAST_CHAR_PTR)
-#define ARG_OUTFILL (A_ARG_REQ | A_CAST_CHAR_PTR)
-#define ARG_HOSTNAME (A_CAST_HOST_COPY_RESOLVE | A_SET_AFTER | A_COLON_CHK | A_HOSTNAME)
-
-
-/*
- * Set up the tables. Warning! They must have corresponding order!
- */
-
-struct arg1opt {
- const char *name;
- unsigned short selector;
- unsigned short ifr_offset;
-};
-
-struct options {
- const char *name;
- const unsigned char flags;
- const unsigned int arg_flags;
- const unsigned short selector;
-};
-
-#define ifreq_offsetof(x) offsetof(struct ifreq, x)
-
-static const struct arg1opt Arg1Opt[] = {
- {"SIOCSIFMETRIC", SIOCSIFMETRIC, ifreq_offsetof(ifr_metric)},
- {"SIOCSIFMTU", SIOCSIFMTU, ifreq_offsetof(ifr_mtu)},
- {"SIOCSIFTXQLEN", SIOCSIFTXQLEN, ifreq_offsetof(ifr_qlen)},
- {"SIOCSIFDSTADDR", SIOCSIFDSTADDR, ifreq_offsetof(ifr_dstaddr)},
- {"SIOCSIFNETMASK", SIOCSIFNETMASK, ifreq_offsetof(ifr_netmask)},
- {"SIOCSIFBRDADDR", SIOCSIFBRDADDR, ifreq_offsetof(ifr_broadaddr)},
-#ifdef BB_FEATURE_IFCONFIG_HW
- {"SIOCSIFHWADDR", SIOCSIFHWADDR, ifreq_offsetof(ifr_hwaddr)},
-#endif
- {"SIOCSIFDSTADDR", SIOCSIFDSTADDR, ifreq_offsetof(ifr_dstaddr)},
-#ifdef SIOCSKEEPALIVE
- {"SIOCSKEEPALIVE", SIOCSKEEPALIVE, ifreq_offsetof(ifr_data)},
-#endif
-#ifdef SIOCSOUTFILL
- {"SIOCSOUTFILL", SIOCSOUTFILL, ifreq_offsetof(ifr_data)},
-#endif
-#ifdef BB_FEATURE_IFCONFIG_MEMSTART_IOADDR_IRQ
- {"SIOCSIFMAP", SIOCSIFMAP, ifreq_offsetof(ifr_map.mem_start)},
- {"SIOCSIFMAP", SIOCSIFMAP, ifreq_offsetof(ifr_map.base_addr)},
- {"SIOCSIFMAP", SIOCSIFMAP, ifreq_offsetof(ifr_map.irq)},
-#endif
- /* Last entry if for unmatched (possibly hostname) arg. */
- {"SIOCSIFADDR", SIOCSIFADDR, ifreq_offsetof(ifr_addr)},
-};
-
-static const struct options OptArray[] = {
- {"metric", N_ARG, ARG_METRIC, 0},
- {"mtu", N_ARG, ARG_MTU, 0},
- {"txqueuelen", N_ARG, ARG_TXQUEUELEN, 0},
- {"dstaddr", N_ARG, ARG_DSTADDR, 0},
- {"netmask", N_ARG, ARG_NETMASK, 0},
- {"broadcast", N_ARG | M_CLR, ARG_BROADCAST, IFF_BROADCAST},
-#ifdef BB_FEATURE_IFCONFIG_HW
- {"hw", N_ARG, ARG_HW, 0},
-#endif
- {"pointopoint", N_ARG | M_CLR, ARG_POINTOPOINT, IFF_POINTOPOINT},
-#ifdef SIOCSKEEPALIVE
- {"keepalive", N_ARG, ARG_KEEPALIVE, 0},
-#endif
-#ifdef SIOCSOUTFILL
- {"outfill", N_ARG, ARG_OUTFILL, 0},
-#endif
-#ifdef BB_FEATURE_IFCONFIG_MEMSTART_IOADDR_IRQ
- {"mem_start", N_ARG, ARG_MEM_START, 0},
- {"io_addr", N_ARG, ARG_IO_ADDR, 0},
- {"irq", N_ARG, ARG_IRQ, 0},
-#endif
- {"arp", N_CLR | M_SET, 0, IFF_NOARP},
- {"trailers", N_CLR | M_SET, 0, IFF_NOTRAILERS},
- {"promisc", N_SET | M_CLR, 0, IFF_PROMISC},
- {"multicast", N_SET | M_CLR, 0, IFF_MULTICAST},
- {"allmulti", N_SET | M_CLR, 0, IFF_ALLMULTI},
- {"dynamic", N_SET | M_CLR, 0, IFF_DYNAMIC},
- {"up", N_SET , 0, (IFF_UP | IFF_RUNNING)},
- {"down", N_CLR , 0, IFF_UP},
- { NULL, 0, ARG_HOSTNAME, (IFF_UP | IFF_RUNNING)}
-};
-
-/*
- * A couple of prototypes.
- */
-
-#ifdef BB_FEATURE_IFCONFIG_HW
-static int in_ether(char *bufp, struct sockaddr *sap);
-#endif
-
-#ifdef BB_FEATURE_IFCONFIG_STATUS
-extern int interface_opt_a;
-extern int display_interfaces(char *ifname);
-#endif
-
-/*
- * Our main function.
- */
-
-int ifconfig_main(int argc, char **argv)
-{
- struct ifreq ifr;
- struct sockaddr_in sai;
- struct sockaddr_in sai_hostname, sai_netmask;
-#ifdef BB_FEATURE_IFCONFIG_HW
- struct sockaddr sa;
-#endif
- const struct arg1opt *a1op;
- const struct options *op;
- int sockfd; /* socket fd we use to manipulate stuff with */
- int goterr;
- int selector;
- char *p;
- char host[128];
- unsigned int mask;
- unsigned int did_flags;
-
- goterr = 0;
- did_flags = 0;
-
- /* skip argv[0] */
- ++argv;
- --argc;
-
-#ifdef BB_FEATURE_IFCONFIG_STATUS
- if ((argc > 0) && (strcmp(*argv,"-a") == 0)) {
- interface_opt_a = 1;
- --argc;
- ++argv;
- }
-#endif
-
- if(argc <= 1) {
-#ifdef BB_FEATURE_IFCONFIG_STATUS
- return display_interfaces(argc ? *argv : NULL);
-#else
- error_msg_and_die( "ifconfig was not compiled with interface status display support.");
-#endif
- }
-
- /* Create a channel to the NET kernel. */
- if ((sockfd = socket(AF_INET, SOCK_DGRAM, 0)) < 0) {
- perror_msg_and_die("socket");
- }
-
- /* get interface name */
- safe_strncpy(ifr.ifr_name, *argv, IFNAMSIZ);
-
- /* Process the remaining arguments. */
- while (*++argv != (char *) NULL) {
- p = *argv;
- mask = N_MASK;
- if (*p == '-') { /* If the arg starts with '-'... */
- ++p; /* advance past it and */
- mask = M_MASK; /* set the appropriate mask. */
- }
- for (op = OptArray ; op->name ; op++) { /* Find table entry. */
- if (strcmp(p,op->name) == 0) { /* If name matches... */
- if ((mask &= op->flags)) { /* set the mask and go. */
- goto FOUND_ARG;;
- }
- /* If we get here, there was a valid arg with an */
- /* invalid '-' prefix. */
- ++goterr;
- goto LOOP;
- }
- }
-
- /* We fell through, so treat as possible hostname. */
- a1op = Arg1Opt + (sizeof(Arg1Opt) / sizeof(Arg1Opt[0])) - 1;
- mask = op->arg_flags;
- goto HOSTNAME;
-
- FOUND_ARG:
- if (mask & ARG_MASK) {
- mask = op->arg_flags;
- a1op = Arg1Opt + (op - OptArray);
- if (mask & A_NETMASK & did_flags) {
- show_usage();
- }
- if (*++argv == NULL) {
- if (mask & A_ARG_REQ) {
- show_usage();
- } else {
- --argv;
- mask &= A_SET_AFTER; /* just for broadcast */
- }
- } else { /* got an arg so process it */
- HOSTNAME:
- did_flags |= (mask & (A_NETMASK|A_HOSTNAME));
- if (mask & A_CAST_HOST_COPY) {
-#ifdef BB_FEATURE_IFCONFIG_HW
- if (mask & A_CAST_RESOLVE) {
-#endif
- safe_strncpy(host, *argv, (sizeof host));
- sai.sin_family = AF_INET;
- sai.sin_port = 0;
- if (!strcmp(host, "default")) {
- /* Default is special, meaning 0.0.0.0. */
- sai.sin_addr.s_addr = INADDR_ANY;
- } else if ((!strcmp(host, "+")) && (mask & A_BROADCAST) &&
- (did_flags & (A_NETMASK|A_HOSTNAME))) {
- /* + is special, meaning broadcast is derived. */
- sai.sin_addr.s_addr = (~sai_netmask.sin_addr.s_addr) |
- (sai_hostname.sin_addr.s_addr & sai_netmask.sin_addr.s_addr);
- } else if (inet_aton(host, &sai.sin_addr) == 0) {
- /* It's not a dotted quad. */
- ++goterr;
- continue;
- }
- if(mask & A_HOSTNAME)
- sai_hostname = sai;
- if(mask & A_NETMASK)
- sai_netmask = sai;
- p = (char *) &sai;
-#ifdef BB_FEATURE_IFCONFIG_HW
- } else { /* A_CAST_HOST_COPY_IN_ETHER */
- /* This is the "hw" arg case. */
- if (strcmp("ether", *argv) || (*++argv == NULL)) {
- show_usage();
- }
- safe_strncpy(host, *argv, (sizeof host));
- if (in_ether(host, &sa)) {
- fprintf(stderr, "invalid hw-addr %s\n", host);
- ++goterr;
- continue;
- }
- p = (char *) &sa;
- }
-#endif
- memcpy((((char *)(&ifr)) + a1op->ifr_offset),
- p, sizeof(struct sockaddr));
- } else {
- unsigned int i = strtoul(*argv,NULL,0);
- p = ((char *)(&ifr)) + a1op->ifr_offset;
-#ifdef BB_FEATURE_IFCONFIG_MEMSTART_IOADDR_IRQ
- if (mask & A_MAP_TYPE) {
- if (ioctl(sockfd, SIOCGIFMAP, &ifr) < 0) {
- ++goterr;
- continue;
- }
- if ((mask & A_MAP_UCHAR) == A_MAP_UCHAR) {
- *((unsigned char *) p) = i;
- } else if (mask & A_MAP_USHORT) {
- *((unsigned short *) p) = i;
- } else {
- *((unsigned long *) p) = i;
- }
- } else
-#endif
- if (mask & A_CAST_CHAR_PTR) {
- *((caddr_t *) p) = (caddr_t) i;
- } else { /* A_CAST_INT */
- *((int *) p) = i;
- }
- }
-
- if (ioctl(sockfd, a1op->selector, &ifr) < 0) {
- perror(a1op->name);
- ++goterr;
- continue;
- }
-
-#ifdef QUESTIONABLE_ALIAS_CASE
- if (mask & A_COLON_CHK) {
- /*
- * Don't do the set_flag() if the address is an alias with
- * a - at the end, since it's deleted already! - Roman
- *
- * Should really use regex.h here, not sure though how well
- * it'll go with the cross-platform support etc.
- */
- char *ptr;
- short int found_colon = 0;
- for (ptr = ifr.ifr_name; *ptr; ptr++ ) {
- if (*ptr == ':') {
- found_colon++;
- }
- }
-
- if (found_colon && *(ptr - 1) == '-') {
- continue;
- }
- }
-#endif
- }
- if (!(mask & A_SET_AFTER)) {
- continue;
- }
- mask = N_SET;
- }
-
- if (ioctl(sockfd, SIOCGIFFLAGS, &ifr) < 0) {
- perror("SIOCGIFFLAGS");
- ++goterr;
- } else {
- selector = op->selector;
- if (mask & SET_MASK) {
- ifr.ifr_flags |= selector;
- } else {
- ifr.ifr_flags &= ~selector;
- }
- if (ioctl(sockfd, SIOCSIFFLAGS, &ifr) < 0) {
- perror("SIOCSIFFLAGS");
- ++goterr;
- }
- }
- LOOP:
- } /* end of while-loop */
-
- return goterr;
-}
-
-#ifdef BB_FEATURE_IFCONFIG_HW
-/* Input an Ethernet address and convert to binary. */
-static int
-in_ether(char *bufp, struct sockaddr *sap)
-{
- unsigned char *ptr;
- int i, j;
- unsigned char val;
- unsigned char c;
-
- sap->sa_family = ARPHRD_ETHER;
- ptr = sap->sa_data;
-
- for (i = 0 ; i < ETH_ALEN ; i++) {
- val = 0;
-
- /* We might get a semicolon here - not required. */
- if (i && (*bufp == ':')) {
- bufp++;
- }
-
- for (j=0 ; j<2 ; j++) {
- c = *bufp;
- if (c >= '0' && c <= '9') {
- c -= '0';
- } else if (c >= 'a' && c <= 'f') {
- c -= ('a' - 10);
- } else if (c >= 'A' && c <= 'F') {
- c -= ('A' - 10);
- } else if (j && (c == ':' || c == 0)) {
- break;
- } else {
- return -1;
- }
- ++bufp;
- val <<= 4;
- val += c;
- }
- *ptr++ = val;
- }
-
- return (int) (*bufp); /* Error if we don't end at end of string. */
-}
-#endif
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