+/* 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 1.23 2003/03/19 09:12:38 mjn3 Exp $
- *
+ * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
*/
/*
* IPV6 support added by Bart Visscher <magick@linux-fan.com>
*/
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h> /* strcmp and friends */
-#include <ctype.h> /* isdigit and friends */
-#include <stddef.h> /* offsetof */
-#include <sys/ioctl.h>
#include <net/if.h>
#include <net/if_arp.h>
#include <netinet/in.h>
-#if __GLIBC__ >=2 && __GLIBC_MINOR >= 1
+#if __GLIBC__ >=2 && __GLIBC_MINOR__ >= 1
#include <netpacket/packet.h>
#include <net/ethernet.h>
#else
-#include <asm/types.h>
-#include <linux/if_ether.h>
+#include <sys/types.h>
+#include <netinet/if_ether.h>
#endif
#include "inet_common.h"
#include "busybox.h"
-#ifdef CONFIG_FEATURE_IFCONFIG_SLIP
+#if ENABLE_FEATURE_IFCONFIG_SLIP
# include <net/if_slip.h>
#endif
# define IFF_DYNAMIC 0x8000 /* dialup device with changing addresses */
#endif
-#ifdef CONFIG_FEATURE_IPV6
+#if ENABLE_FEATURE_IPV6
struct in6_ifreq {
struct in6_addr ifr6_addr;
uint32_t ifr6_prefixlen;
#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
+#if ENABLE_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 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_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 | A_HOSTNAME)
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
+#if ENABLE_FEATURE_IFCONFIG_BROADCAST_PLUS
const unsigned int flags:6;
const unsigned int arg_flags:10;
#else
{"SIOCSIFDSTADDR", SIOCSIFDSTADDR, ifreq_offsetof(ifr_dstaddr)},
{"SIOCSIFNETMASK", SIOCSIFNETMASK, ifreq_offsetof(ifr_netmask)},
{"SIOCSIFBRDADDR", SIOCSIFBRDADDR, ifreq_offsetof(ifr_broadaddr)},
-#ifdef CONFIG_FEATURE_IFCONFIG_HW
+#if ENABLE_FEATURE_IFCONFIG_HW
{"SIOCSIFHWADDR", SIOCSIFHWADDR, ifreq_offsetof(ifr_hwaddr)},
#endif
{"SIOCSIFDSTADDR", SIOCSIFDSTADDR, ifreq_offsetof(ifr_dstaddr)},
#ifdef SIOCSOUTFILL
{"SIOCSOUTFILL", SIOCSOUTFILL, ifreq_offsetof(ifr_data)},
#endif
-#ifdef CONFIG_FEATURE_IFCONFIG_MEMSTART_IOADDR_IRQ
+#if ENABLE_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. */
-#ifdef CONFIG_FEATURE_IPV6
+#if ENABLE_FEATURE_IPV6
{"SIOCSIFADDR", SIOCSIFADDR, ifreq_offsetof(ifr_addr)}, /* IPv6 version ignores the offset */
{"SIOCDIFADDR", SIOCDIFADDR, ifreq_offsetof(ifr_addr)}, /* IPv6 version ignores the offset */
#endif
{"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
+#if ENABLE_FEATURE_IFCONFIG_HW
{"hw", N_ARG, ARG_HW, 0},
#endif
{"pointopoint", N_ARG | M_CLR, ARG_POINTOPOINT, IFF_POINTOPOINT},
#ifdef SIOCSOUTFILL
{"outfill", N_ARG, ARG_OUTFILL, 0},
#endif
-#ifdef CONFIG_FEATURE_IFCONFIG_MEMSTART_IOADDR_IRQ
+#if ENABLE_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
-#ifdef CONFIG_FEATURE_IPV6
+#if ENABLE_FEATURE_IPV6
{"add", N_ARG, ARG_ADD_DEL, 0},
{"del", N_ARG, ARG_ADD_DEL, 0},
#endif
* A couple of prototypes.
*/
-#ifdef CONFIG_FEATURE_IFCONFIG_HW
-static int in_ether(char *bufp, struct sockaddr *sap);
+#if ENABLE_FEATURE_IFCONFIG_HW
+static int in_ether(const char *bufp, struct sockaddr *sap);
#endif
-#ifdef CONFIG_FEATURE_IFCONFIG_STATUS
+#if ENABLE_FEATURE_IFCONFIG_STATUS
extern int interface_opt_a;
extern int display_interfaces(char *ifname);
#endif
{
struct ifreq ifr;
struct sockaddr_in sai;
-#ifdef CONFIG_FEATURE_IPV6
+#if ENABLE_FEATURE_IPV6
struct sockaddr_in6 sai6;
#endif
-#ifdef CONFIG_FEATURE_IFCONFIG_HW
+#if ENABLE_FEATURE_IFCONFIG_HW
struct sockaddr sa;
#endif
const struct arg1opt *a1op;
int sockfd; /* socket fd we use to manipulate stuff with */
int goterr;
int selector;
-#ifdef CONFIG_FEATURE_IFCONFIG_BROADCAST_PLUS
+#if ENABLE_FEATURE_IFCONFIG_BROADCAST_PLUS
unsigned int mask;
unsigned int did_flags;
- in_addr_t sai_hostname, sai_netmask;
+ unsigned int sai_hostname, sai_netmask;
#else
unsigned char mask;
unsigned char did_flags;
#endif
char *p;
- char host[128];
+ /*char host[128];*/
+ const char *host = NULL; /* make gcc happy */
goterr = 0;
did_flags = 0;
+#if ENABLE_FEATURE_IFCONFIG_BROADCAST_PLUS
+ sai_hostname = 0;
+ sai_netmask = 0;
+#endif
/* skip argv[0] */
++argv;
--argc;
-#ifdef CONFIG_FEATURE_IFCONFIG_STATUS
+#if ENABLE_FEATURE_IFCONFIG_STATUS
if ((argc > 0) && (((*argv)[0] == '-') && ((*argv)[1] == 'a') && !(*argv)[2])) {
interface_opt_a = 1;
--argc;
#endif
if (argc <= 1) {
-#ifdef CONFIG_FEATURE_IFCONFIG_STATUS
+#if ENABLE_FEATURE_IFCONFIG_STATUS
return display_interfaces(argc ? *argv : NULL);
#else
- bb_error_msg_and_die
- ("ifconfig was not compiled with interface status display support.");
+ bb_error_msg_and_die("no support for status display");
#endif
}
/* Create a channel to the NET kernel. */
- if ((sockfd = socket(AF_INET, SOCK_DGRAM, 0)) < 0) {
- bb_perror_msg_and_die("socket");
- }
+ sockfd = 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;;
+ mask &= op->flags;
+ if (mask) { /* set the mask and go. */
+ goto FOUND_ARG;
}
/* If we get here, there was a valid arg with an */
/* invalid '-' prefix. */
mask = op->arg_flags;
goto HOSTNAME;
- FOUND_ARG:
+ FOUND_ARG:
if (mask & ARG_MASK) {
mask = op->arg_flags;
a1op = Arg1Opt + (op - OptArray);
mask &= A_SET_AFTER; /* just for broadcast */
}
} else { /* got an arg so process it */
- HOSTNAME:
+ HOSTNAME:
did_flags |= (mask & (A_NETMASK|A_HOSTNAME));
if (mask & A_CAST_HOST_COPY) {
-#ifdef CONFIG_FEATURE_IFCONFIG_HW
+#if ENABLE_FEATURE_IFCONFIG_HW
if (mask & A_CAST_RESOLVE) {
#endif
-#ifdef CONFIG_FEATURE_IPV6
+#if ENABLE_FEATURE_IPV6
char *prefix;
int prefix_len = 0;
#endif
-
- 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)) {
+ /*safe_strncpy(host, *argv, (sizeof host));*/
+ host = *argv;
+#if ENABLE_FEATURE_IPV6
+ prefix = strchr(host, '/');
+ if (prefix) {
+ if (safe_strtoi(prefix + 1, &prefix_len) ||
+ (prefix_len < 0) || (prefix_len > 128))
+ {
++goterr;
goto LOOP;
}
sai.sin_family = AF_INET;
sai.sin_port = 0;
- if (!strcmp(host, bb_INET_default)) {
+ if (!strcmp(host, bb_str_default)) {
/* Default is special, meaning 0.0.0.0. */
sai.sin_addr.s_addr = INADDR_ANY;
-#ifdef CONFIG_FEATURE_IFCONFIG_BROADCAST_PLUS
+#if ENABLE_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
+#if ENABLE_FEATURE_IPV6
} else if (inet_pton(AF_INET6, host, &sai6.sin6_addr) > 0) {
int sockfd6;
struct in6_ifreq ifr6;
#endif
} else if (inet_aton(host, &sai.sin_addr) == 0) {
/* It's not a dotted quad. */
- ++goterr;
- continue;
+ struct hostent *hp = gethostbyname(host);
+ if (!hp) {
+ ++goterr;
+ continue;
+ }
+ memcpy((char *) &sai.sin_addr, (char *) hp->h_addr_list[0],
+ sizeof(struct in_addr));
}
-#ifdef CONFIG_FEATURE_IFCONFIG_BROADCAST_PLUS
+#if ENABLE_FEATURE_IFCONFIG_BROADCAST_PLUS
if (mask & A_HOSTNAME) {
sai_hostname = sai.sin_addr.s_addr;
}
}
#endif
p = (char *) &sai;
-#ifdef CONFIG_FEATURE_IFCONFIG_HW
+#if ENABLE_FEATURE_IFCONFIG_HW
} else { /* A_CAST_HOST_COPY_IN_ETHER */
/* This is the "hw" arg case. */
if (strcmp("ether", *argv) || (*++argv == NULL)) {
bb_show_usage();
}
- safe_strncpy(host, *argv, (sizeof host));
+ /*safe_strncpy(host, *argv, sizeof(host));*/
+ host = *argv;
if (in_ether(host, &sa)) {
bb_error_msg("invalid hw-addr %s", host);
++goterr;
p = (char *) &sa;
}
#endif
- memcpy((((char *) (&ifr)) + a1op->ifr_offset),
+ 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
+ p = ((char *)&ifr) + a1op->ifr_offset;
+#if ENABLE_FEATURE_IFCONFIG_MEMSTART_IOADDR_IRQ
if (mask & A_MAP_TYPE) {
if (ioctl(sockfd, SIOCGIFMAP, &ifr) < 0) {
++goterr;
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
+ * 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;
++goterr;
}
}
- LOOP:
+ LOOP:
continue;
} /* end of while-loop */
+ if (ENABLE_FEATURE_CLEAN_UP) close(sockfd);
return goterr;
}
-#ifdef CONFIG_FEATURE_IFCONFIG_HW
+#if ENABLE_FEATURE_IFCONFIG_HW
/* Input an Ethernet address and convert to binary. */
-static int in_ether(char *bufp, struct sockaddr *sap)
+static int in_ether(const char *bufp, struct sockaddr *sap)
{
- unsigned char *ptr;
+ char *ptr;
int i, j;
unsigned char val;
unsigned char c;
projects / oweals / busybox.git / blobdiff