+/* vi: set sw=4 ts=4: */
/* ifconfig
*
* Similar to the standard Unix ifconfig, but with only the necessary
* Bjorn Wesen, Axis Communications AB
*
*
- * Authors of the original ifconfig was:
+ * 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 1.20 2002/11/26 09:02:05 bug1 Exp $
- *
+ * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
*/
/*
#include <string.h> /* strcmp and friends */
#include <ctype.h> /* isdigit and friends */
#include <stddef.h> /* offsetof */
+#include <unistd.h>
+#include <netdb.h>
#include <sys/ioctl.h>
+#include <net/if.h>
#include <net/if_arp.h>
#include <netinet/in.h>
-#include <linux/if_ether.h>
-#include <net/if.h>
+#if __GLIBC__ >=2 && __GLIBC_MINOR >= 1
+#include <netpacket/packet.h>
+#include <net/ethernet.h>
+#else
+#include <sys/types.h>
+#include <netinet/if_ether.h>
+#endif
#include "inet_common.h"
#include "busybox.h"
#ifdef CONFIG_FEATURE_IFCONFIG_SLIP
-# include <linux/if_slip.h>
+# include <net/if_slip.h>
#endif
/* I don't know if this is needed for busybox or not. Anyone? */
#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. */
+#ifdef CONFIG_FEATURE_IFCONFIG_BROADCAST_PLUS
+#define A_HOSTNAME 0x100 /* Set if it is ip addr. */
+#define A_BROADCAST 0x200 /* Set if it is broadcast addr. */
+#else
+#define A_HOSTNAME 0
+#define A_BROADCAST 0
+#endif
/*
* These defines are for dealing with the A_CAST_TYPE field.
#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)
+#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_POINTOPOINT (A_ARG_REQ | 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)
+#define ARG_HOSTNAME (A_CAST_HOST_COPY_RESOLVE | A_SET_AFTER | A_COLON_CHK | A_HOSTNAME)
#define ARG_ADD_DEL (A_CAST_HOST_COPY_RESOLVE | A_SET_AFTER)
struct arg1opt {
const char *name;
- unsigned short selector;
+ int selector;
unsigned short ifr_offset;
};
struct options {
const char *name;
+#ifdef CONFIG_FEATURE_IFCONFIG_BROADCAST_PLUS
+ const unsigned int flags:6;
+ const unsigned int arg_flags:10;
+#else
const unsigned char flags;
const unsigned char arg_flags;
+#endif
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)},
+ {"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 CONFIG_FEATURE_IFCONFIG_HW
- {"SIOCSIFHWADDR", SIOCSIFHWADDR, ifreq_offsetof(ifr_hwaddr)},
+ {"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)},
+ {"SIOCSOUTFILL", SIOCSOUTFILL, ifreq_offsetof(ifr_data)},
#endif
#ifdef CONFIG_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)},
+ {"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. */
#ifdef CONFIG_FEATURE_IPV6
- {"SIOCSIFADDR", SIOCSIFADDR, ifreq_offsetof(ifr_addr)}, /* IPv6 version ignores the offset */
- {"SIOCDIFADDR", SIOCDIFADDR, ifreq_offsetof(ifr_addr)}, /* IPv6 version ignores the offset */
+ {"SIOCSIFADDR", SIOCSIFADDR, ifreq_offsetof(ifr_addr)}, /* IPv6 version ignores the offset */
+ {"SIOCDIFADDR", SIOCDIFADDR, ifreq_offsetof(ifr_addr)}, /* IPv6 version ignores the offset */
#endif
- {"SIOCSIFADDR", SIOCSIFADDR, ifreq_offsetof(ifr_addr)},
+ {"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},
+ {"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 CONFIG_FEATURE_IFCONFIG_HW
- {"hw", N_ARG, ARG_HW, 0},
+ {"hw", N_ARG, ARG_HW, 0},
#endif
{"pointopoint", N_ARG | M_CLR, ARG_POINTOPOINT, IFF_POINTOPOINT},
#ifdef SIOCSKEEPALIVE
- {"keepalive", N_ARG, ARG_KEEPALIVE, 0},
+ {"keepalive", N_ARG, ARG_KEEPALIVE, 0},
#endif
#ifdef SIOCSOUTFILL
- {"outfill", N_ARG, ARG_OUTFILL, 0},
+ {"outfill", N_ARG, ARG_OUTFILL, 0},
#endif
#ifdef CONFIG_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},
+ {"mem_start", N_ARG, ARG_MEM_START, 0},
+ {"io_addr", N_ARG, ARG_IO_ADDR, 0},
+ {"irq", N_ARG, ARG_IRQ, 0},
#endif
#ifdef CONFIG_FEATURE_IPV6
- {"add", N_ARG, ARG_ADD_DEL, 0},
- {"del", N_ARG, ARG_ADD_DEL, 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)}
+ {"add", N_ARG, ARG_ADD_DEL, 0},
+ {"del", N_ARG, ARG_ADD_DEL, 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)}
};
/*
{
struct ifreq ifr;
struct sockaddr_in sai;
-
#ifdef CONFIG_FEATURE_IPV6
struct sockaddr_in6 sai6;
#endif
int sockfd; /* socket fd we use to manipulate stuff with */
int goterr;
int selector;
- char *p;
- char host[128];
+#ifdef CONFIG_FEATURE_IFCONFIG_BROADCAST_PLUS
+ unsigned int mask;
+ unsigned int did_flags;
+ unsigned int sai_hostname, sai_netmask;
+#else
unsigned char mask;
unsigned char did_flags;
+#endif
+ char *p;
+ char host[128];
goterr = 0;
did_flags = 0;
+#ifdef CONFIG_FEATURE_IFCONFIG_BROADCAST_PLUS
+ sai_hostname = 0;
+ sai_netmask = 0;
+#endif
/* skip argv[0] */
++argv;
--argc;
#ifdef CONFIG_FEATURE_IFCONFIG_STATUS
- if ((argc > 0) && (strcmp(*argv, "-a") == 0)) {
+ if ((argc > 0) && (((*argv)[0] == '-') && ((*argv)[1] == 'a') && !(*argv)[2])) {
interface_opt_a = 1;
--argc;
++argv;
#ifdef CONFIG_FEATURE_IFCONFIG_STATUS
return display_interfaces(argc ? *argv : NULL);
#else
- error_msg_and_die
+ bb_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");
- }
+ sockfd = bb_xsocket(AF_INET, SOCK_DGRAM, 0);
/* get interface name */
safe_strncpy(ifr.ifr_name, *argv, IFNAMSIZ);
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;;
+ goto FOUND_ARG;
}
/* If we get here, there was a valid arg with an */
/* invalid '-' prefix. */
mask = op->arg_flags;
a1op = Arg1Opt + (op - OptArray);
if (mask & A_NETMASK & did_flags) {
- show_usage();
+ bb_show_usage();
}
if (*++argv == NULL) {
if (mask & A_ARG_REQ) {
- show_usage();
+ bb_show_usage();
} else {
--argv;
mask &= A_SET_AFTER; /* just for broadcast */
}
} else { /* got an arg so process it */
HOSTNAME:
- did_flags |= (mask & A_NETMASK);
+ did_flags |= (mask & (A_NETMASK|A_HOSTNAME));
if (mask & A_CAST_HOST_COPY) {
#ifdef CONFIG_FEATURE_IFCONFIG_HW
if (mask & A_CAST_RESOLVE) {
safe_strncpy(host, *argv, (sizeof host));
#ifdef CONFIG_FEATURE_IPV6
if ((prefix = strchr(host, '/'))) {
- prefix_len = atol(prefix + 1);
- if ((prefix_len < 0) || (prefix_len > 128)) {
+ if (safe_strtoi(prefix + 1, &prefix_len) ||
+ (prefix_len < 0) || (prefix_len > 128))
+ {
++goterr;
goto LOOP;
}
if (!strcmp(host, bb_INET_default)) {
/* Default is special, meaning 0.0.0.0. */
sai.sin_addr.s_addr = INADDR_ANY;
+#ifdef CONFIG_FEATURE_IFCONFIG_BROADCAST_PLUS
+ } else if (((host[0] == '+') && !host[1]) && (mask & A_BROADCAST) &&
+ (did_flags & (A_NETMASK|A_HOSTNAME)) == (A_NETMASK|A_HOSTNAME)) {
+ /* + is special, meaning broadcast is derived. */
+ sai.sin_addr.s_addr = (~sai_netmask) | (sai_hostname & sai_netmask);
+#endif
#ifdef CONFIG_FEATURE_IPV6
- } else
- if (inet_pton(AF_INET6, host, &sai6.sin6_addr) >
- 0) {
+ } else if (inet_pton(AF_INET6, host, &sai6.sin6_addr) > 0) {
int sockfd6;
struct in6_ifreq ifr6;
sizeof(struct in6_addr));
/* Create a channel to the NET kernel. */
- if ((sockfd6 =
- socket(AF_INET6, SOCK_DGRAM, 0)) < 0) {
- perror_msg_and_die("socket6");
+ if ((sockfd6 = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) {
+ bb_perror_msg_and_die("socket6");
}
if (ioctl(sockfd6, SIOGIFINDEX, &ifr) < 0) {
perror("SIOGIFINDEX");
#endif
} else if (inet_aton(host, &sai.sin_addr) == 0) {
/* It's not a dotted quad. */
- ++goterr;
- continue;
+ struct hostent *hp;
+ if ((hp = gethostbyname(host)) == (struct hostent *)NULL) {
+ ++goterr;
+ continue;
+ }
+ memcpy((char *) &sai.sin_addr, (char *) hp->h_addr_list[0],
+ sizeof(struct in_addr));
+ }
+#ifdef CONFIG_FEATURE_IFCONFIG_BROADCAST_PLUS
+ if (mask & A_HOSTNAME) {
+ sai_hostname = sai.sin_addr.s_addr;
}
+ if (mask & A_NETMASK) {
+ sai_netmask = sai.sin_addr.s_addr;
+ }
+#endif
p = (char *) &sai;
#ifdef CONFIG_FEATURE_IFCONFIG_HW
} else { /* A_CAST_HOST_COPY_IN_ETHER */
/* This is the "hw" arg case. */
if (strcmp("ether", *argv) || (*++argv == NULL)) {
- show_usage();
+ bb_show_usage();
}
safe_strncpy(host, *argv, (sizeof host));
if (in_ether(host, &sa)) {
- error_msg("invalid hw-addr %s", host);
+ bb_error_msg("invalid hw-addr %s", host);
++goterr;
continue;
}
memcpy((((char *) (&ifr)) + a1op->ifr_offset),
p, sizeof(struct sockaddr));
} else {
- unsigned int i = strtoul(*argv, NULL, 0);
+ unsigned long i = strtoul(*argv, NULL, 0);
p = ((char *) (&ifr)) + a1op->ifr_offset;
#ifdef CONFIG_FEATURE_IFCONFIG_MEMSTART_IOADDR_IRQ
* 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.
+ * it'll go with the cross-platform support etc.
*/
char *ptr;
short int found_colon = 0;
continue;
} /* end of while-loop */
+ if (ENABLE_FEATURE_CLEAN_UP) close(sockfd);
return goterr;
}
/* Input an Ethernet address and convert to binary. */
static int in_ether(char *bufp, struct sockaddr *sap)
{
- unsigned char *ptr;
+ 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;
+ i = 0;
+ do {
+ j = val = 0;
/* We might get a semicolon here - not required. */
if (i && (*bufp == ':')) {
bufp++;
}
- for (j = 0; j < 2; j++) {
+ do {
c = *bufp;
- if (c >= '0' && c <= '9') {
+ if (((unsigned char)(c - '0')) <= 9) {
c -= '0';
- } else if (c >= 'a' && c <= 'f') {
- c -= ('a' - 10);
- } else if (c >= 'A' && c <= 'F') {
- c -= ('A' - 10);
+ } else if (((unsigned char)((c|0x20) - 'a')) <= 5) {
+ c = (c|0x20) - ('a'-10);
} else if (j && (c == ':' || c == 0)) {
break;
} else {
++bufp;
val <<= 4;
val += c;
- }
+ } while (++j < 2);
*ptr++ = val;
- }
+ } while (++i < ETH_ALEN);
return (int) (*bufp); /* Error if we don't end at end of string. */
}
projects / oweals / busybox.git / blobdiff