* Authors of the original ifconfig was:
* Fred N. van Kempen, <waltje@uwalt.nl.mugnet.org>
*
- * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
+ * Licensed under GPLv2 or later, see file LICENSE in this source tree.
*/
/*
* IPV6 support added by Bart Visscher <magick@linux-fan.com>
*/
+//usage:#define ifconfig_trivial_usage
+//usage: IF_FEATURE_IFCONFIG_STATUS("[-a]") " interface [address]"
+//usage:#define ifconfig_full_usage "\n\n"
+//usage: "Configure a network interface\n"
+//usage: "\n"
+//usage: IF_FEATURE_IPV6(
+//usage: " [add ADDRESS[/PREFIXLEN]]\n")
+//usage: IF_FEATURE_IPV6(
+//usage: " [del ADDRESS[/PREFIXLEN]]\n")
+//usage: " [[-]broadcast [ADDRESS]] [[-]pointopoint [ADDRESS]]\n"
+//usage: " [netmask ADDRESS] [dstaddr ADDRESS]\n"
+//usage: IF_FEATURE_IFCONFIG_SLIP(
+//usage: " [outfill NN] [keepalive NN]\n")
+//usage: " " IF_FEATURE_IFCONFIG_HW("[hw ether" IF_FEATURE_HWIB("|infiniband")" ADDRESS] ") "[metric NN] [mtu NN]\n"
+//usage: " [[-]trailers] [[-]arp] [[-]allmulti]\n"
+//usage: " [multicast] [[-]promisc] [txqueuelen NN] [[-]dynamic]\n"
+//usage: IF_FEATURE_IFCONFIG_MEMSTART_IOADDR_IRQ(
+//usage: " [mem_start NN] [io_addr NN] [irq NN]\n")
+//usage: " [up|down] ..."
+
+#include "libbb.h"
+#include "inet_common.h"
#include <net/if.h>
#include <net/if_arp.h>
#include <netinet/in.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>
+#ifdef HAVE_NET_ETHERNET_H
+# include <net/ethernet.h>
#endif
-#include "inet_common.h"
-#include "busybox.h"
#if ENABLE_FEATURE_IFCONFIG_SLIP
# include <net/if_slip.h>
struct arg1opt {
const char *name;
- int selector;
+ unsigned short selector;
unsigned short ifr_offset;
};
#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)},
+ { "SIFMETRIC", SIOCSIFMETRIC, ifreq_offsetof(ifr_metric) },
+ { "SIFMTU", SIOCSIFMTU, ifreq_offsetof(ifr_mtu) },
+ { "SIFTXQLEN", SIOCSIFTXQLEN, ifreq_offsetof(ifr_qlen) },
+ { "SIFDSTADDR", SIOCSIFDSTADDR, ifreq_offsetof(ifr_dstaddr) },
+ { "SIFNETMASK", SIOCSIFNETMASK, ifreq_offsetof(ifr_netmask) },
+ { "SIFBRDADDR", SIOCSIFBRDADDR, ifreq_offsetof(ifr_broadaddr) },
#if ENABLE_FEATURE_IFCONFIG_HW
- {"SIOCSIFHWADDR", SIOCSIFHWADDR, ifreq_offsetof(ifr_hwaddr)},
+ { "SIFHWADDR", SIOCSIFHWADDR, ifreq_offsetof(ifr_hwaddr) },
#endif
- {"SIOCSIFDSTADDR", SIOCSIFDSTADDR, ifreq_offsetof(ifr_dstaddr)},
+ { "SIFDSTADDR", SIOCSIFDSTADDR, ifreq_offsetof(ifr_dstaddr) },
#ifdef SIOCSKEEPALIVE
- {"SIOCSKEEPALIVE", SIOCSKEEPALIVE, ifreq_offsetof(ifr_data)},
+ { "SKEEPALIVE", SIOCSKEEPALIVE, ifreq_offsetof(ifr_data) },
#endif
#ifdef SIOCSOUTFILL
- {"SIOCSOUTFILL", SIOCSOUTFILL, ifreq_offsetof(ifr_data)},
+ { "SOUTFILL", SIOCSOUTFILL, ifreq_offsetof(ifr_data) },
#endif
#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)},
+ { "SIFMAP", SIOCSIFMAP, ifreq_offsetof(ifr_map.mem_start) },
+ { "SIFMAP", SIOCSIFMAP, ifreq_offsetof(ifr_map.base_addr) },
+ { "SIFMAP", SIOCSIFMAP, ifreq_offsetof(ifr_map.irq) },
#endif
/* Last entry if for unmatched (possibly hostname) arg. */
#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 */
+ { "SIFADDR", SIOCSIFADDR, ifreq_offsetof(ifr_addr) }, /* IPv6 version ignores the offset */
+ { "DIFADDR", SIOCDIFADDR, ifreq_offsetof(ifr_addr) }, /* IPv6 version ignores the offset */
#endif
- {"SIOCSIFADDR", SIOCSIFADDR, ifreq_offsetof(ifr_addr)},
+ { "SIFADDR", 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 },
#if ENABLE_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},
+ { "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
#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},
+ { "mem_start", N_ARG, ARG_MEM_START, 0 },
+ { "io_addr", N_ARG, ARG_IO_ADDR, 0 },
+ { "irq", N_ARG, ARG_IRQ, 0 },
#endif
#if ENABLE_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) }
};
/*
* A couple of prototypes.
*/
-
#if ENABLE_FEATURE_IFCONFIG_HW
static int in_ether(const char *bufp, struct sockaddr *sap);
#endif
-#if ENABLE_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)
+int ifconfig_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
+int ifconfig_main(int argc UNUSED_PARAM, char **argv)
{
struct ifreq ifr;
struct sockaddr_in sai;
-#if ENABLE_FEATURE_IPV6
- struct sockaddr_in6 sai6;
-#endif
#if ENABLE_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;
#if ENABLE_FEATURE_IFCONFIG_BROADCAST_PLUS
unsigned int mask;
/*char host[128];*/
const char *host = NULL; /* make gcc happy */
- goterr = 0;
did_flags = 0;
#if ENABLE_FEATURE_IFCONFIG_BROADCAST_PLUS
sai_hostname = 0;
/* skip argv[0] */
++argv;
- --argc;
#if ENABLE_FEATURE_IFCONFIG_STATUS
- if ((argc > 0) && (((*argv)[0] == '-') && ((*argv)[1] == 'a') && !(*argv)[2])) {
+ if (argv[0] && (argv[0][0] == '-' && argv[0][1] == 'a' && !argv[0][2])) {
interface_opt_a = 1;
- --argc;
++argv;
}
#endif
- if (argc <= 1) {
+ if (!argv[0] || !argv[1]) { /* one or no args */
#if ENABLE_FEATURE_IFCONFIG_STATUS
- return display_interfaces(argc ? *argv : NULL);
+ return display_interfaces(argv[0] /* can be NULL */);
#else
bb_error_msg_and_die("no support for status display");
#endif
sockfd = xsocket(AF_INET, SOCK_DGRAM, 0);
/* get interface name */
- safe_strncpy(ifr.ifr_name, *argv, IFNAMSIZ);
+ strncpy_IFNAMSIZ(ifr.ifr_name, *argv);
/* Process the remaining arguments. */
while (*++argv != (char *) NULL) {
for (op = OptArray; op->name; op++) { /* Find table entry. */
if (strcmp(p, op->name) == 0) { /* If name matches... */
mask &= op->flags;
- if (mask) { /* set the mask and go. */
+ if (mask) /* set the mask and go. */
goto FOUND_ARG;
- }
/* If we get here, there was a valid arg with an */
/* invalid '-' prefix. */
- ++goterr;
- goto LOOP;
+ bb_error_msg_and_die("bad: '%s'", p-1);
}
}
/* We fell through, so treat as possible hostname. */
- a1op = Arg1Opt + (sizeof(Arg1Opt) / sizeof(Arg1Opt[0])) - 1;
+ a1op = Arg1Opt + ARRAY_SIZE(Arg1Opt) - 1;
mask = op->arg_flags;
goto HOSTNAME;
if (mask & ARG_MASK) {
mask = op->arg_flags;
a1op = Arg1Opt + (op - OptArray);
- if (mask & A_NETMASK & did_flags) {
+ if (mask & A_NETMASK & did_flags)
bb_show_usage();
- }
if (*++argv == NULL) {
- if (mask & A_ARG_REQ) {
+ if (mask & A_ARG_REQ)
bb_show_usage();
- } else {
- --argv;
- mask &= A_SET_AFTER; /* just for broadcast */
- }
+ --argv;
+ mask &= A_SET_AFTER; /* just for broadcast */
} else { /* got an arg so process it */
HOSTNAME:
did_flags |= (mask & (A_NETMASK|A_HOSTNAME));
#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;
- }
- *prefix = 0;
+ prefix_len = xatou_range(prefix + 1, 0, 128);
+ *prefix = '\0';
}
#endif
-
sai.sin_family = AF_INET;
sai.sin_port = 0;
- if (!strcmp(host, bb_INET_default)) {
+ if (strcmp(host, "default") == 0) {
/* Default is special, meaning 0.0.0.0. */
sai.sin_addr.s_addr = INADDR_ANY;
+ }
#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)) {
+ 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
+ else {
+ len_and_sockaddr *lsa;
+ if (strcmp(host, "inet") == 0)
+ continue; /* compat stuff */
+ lsa = xhost2sockaddr(host, 0);
#if ENABLE_FEATURE_IPV6
- } else if (inet_pton(AF_INET6, host, &sai6.sin6_addr) > 0) {
- int sockfd6;
- struct in6_ifreq ifr6;
-
- memcpy((char *) &ifr6.ifr6_addr,
- (char *) &sai6.sin6_addr,
- sizeof(struct in6_addr));
-
- /* Create a channel to the NET kernel. */
- if ((sockfd6 = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) {
- bb_perror_msg_and_die("socket6");
- }
- if (ioctl(sockfd6, SIOGIFINDEX, &ifr) < 0) {
- perror("SIOGIFINDEX");
- ++goterr;
+ if (lsa->u.sa.sa_family == AF_INET6) {
+ int sockfd6;
+ struct in6_ifreq ifr6;
+
+ memcpy((char *) &ifr6.ifr6_addr,
+ (char *) &(lsa->u.sin6.sin6_addr),
+ sizeof(struct in6_addr));
+
+ /* Create a channel to the NET kernel. */
+ sockfd6 = xsocket(AF_INET6, SOCK_DGRAM, 0);
+ xioctl(sockfd6, SIOGIFINDEX, &ifr);
+ ifr6.ifr6_ifindex = ifr.ifr_ifindex;
+ ifr6.ifr6_prefixlen = prefix_len;
+ ioctl_or_perror_and_die(sockfd6, a1op->selector, &ifr6, "SIOC%s", a1op->name);
+ if (ENABLE_FEATURE_CLEAN_UP)
+ free(lsa);
continue;
}
- ifr6.ifr6_ifindex = ifr.ifr_ifindex;
- ifr6.ifr6_prefixlen = prefix_len;
- if (ioctl(sockfd6, a1op->selector, &ifr6) < 0) {
- perror(a1op->name);
- ++goterr;
- }
- continue;
#endif
- } else if (inet_aton(host, &sai.sin_addr) == 0) {
- /* It's not a dotted quad. */
- struct hostent *hp = gethostbyname(host);
- if (!hp) {
- ++goterr;
- continue;
- }
- memcpy((char *) &sai.sin_addr, (char *) hp->h_addr_list[0],
- sizeof(struct in_addr));
+ sai.sin_addr = lsa->u.sin.sin_addr;
+ if (ENABLE_FEATURE_CLEAN_UP)
+ free(lsa);
}
#if ENABLE_FEATURE_IFCONFIG_BROADCAST_PLUS
- if (mask & A_HOSTNAME) {
+ if (mask & A_HOSTNAME)
sai_hostname = sai.sin_addr.s_addr;
- }
- if (mask & A_NETMASK) {
+ if (mask & A_NETMASK)
sai_netmask = sai.sin_addr.s_addr;
- }
#endif
p = (char *) &sai;
#if ENABLE_FEATURE_IFCONFIG_HW
} else { /* A_CAST_HOST_COPY_IN_ETHER */
/* This is the "hw" arg case. */
- if (strcmp("ether", *argv) || (*++argv == NULL)) {
+ smalluint hw_class= index_in_substrings("ether\0"
+ IF_FEATURE_HWIB("infiniband\0"), *argv) + 1;
+ if (!hw_class || !*++argv)
bb_show_usage();
- }
/*safe_strncpy(host, *argv, sizeof(host));*/
host = *argv;
- if (in_ether(host, &sa)) {
- bb_error_msg("invalid hw-addr %s", host);
- ++goterr;
- continue;
- }
+ if (hw_class == 1 ? in_ether(host, &sa) : in_ib(host, &sa))
+ bb_error_msg_and_die("invalid hw-addr %s", host);
p = (char *) &sa;
}
#endif
memcpy( (((char *)&ifr) + a1op->ifr_offset),
p, sizeof(struct sockaddr));
} else {
+ /* FIXME: error check?? */
unsigned long i = strtoul(*argv, NULL, 0);
-
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;
- continue;
- }
- if ((mask & A_MAP_UCHAR) == A_MAP_UCHAR) {
+ xioctl(sockfd, SIOCGIFMAP, &ifr);
+ if ((mask & A_MAP_UCHAR) == A_MAP_UCHAR)
*((unsigned char *) p) = i;
- } else if (mask & A_MAP_USHORT) {
+ else if (mask & A_MAP_USHORT)
*((unsigned short *) p) = i;
- } else {
+ else
*((unsigned long *) p) = i;
- }
} else
#endif
- if (mask & A_CAST_CHAR_PTR) {
+ if (mask & A_CAST_CHAR_PTR)
*((caddr_t *) p) = (caddr_t) i;
- } else { /* A_CAST_INT */
+ else /* A_CAST_INT */
*((int *) p) = i;
- }
}
- if (ioctl(sockfd, a1op->selector, &ifr) < 0) {
- perror(a1op->name);
- ++goterr;
- continue;
- }
+ ioctl_or_perror_and_die(sockfd, a1op->selector, &ifr, "SIOC%s", a1op->name);
#ifdef QUESTIONABLE_ALIAS_CASE
if (mask & A_COLON_CHK) {
/*
*/
char *ptr;
short int found_colon = 0;
-
- for (ptr = ifr.ifr_name; *ptr; ptr++) {
- if (*ptr == ':') {
+ for (ptr = ifr.ifr_name; *ptr; ptr++)
+ if (*ptr == ':')
found_colon++;
- }
- }
-
- if (found_colon && *(ptr - 1) == '-') {
+ if (found_colon && ptr[-1] == '-')
continue;
- }
}
#endif
}
- if (!(mask & A_SET_AFTER)) {
+ 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:
- continue;
- } /* end of while-loop */
-
- if (ENABLE_FEATURE_CLEAN_UP) close(sockfd);
- return goterr;
+ xioctl(sockfd, SIOCGIFFLAGS, &ifr);
+ selector = op->selector;
+ if (mask & SET_MASK)
+ ifr.ifr_flags |= selector;
+ else
+ ifr.ifr_flags &= ~selector;
+ xioctl(sockfd, SIOCSIFFLAGS, &ifr);
+ } /* while () */
+
+ if (ENABLE_FEATURE_CLEAN_UP)
+ close(sockfd);
+ return 0;
}
#if ENABLE_FEATURE_IFCONFIG_HW
unsigned char c;
sap->sa_family = ARPHRD_ETHER;
- ptr = sap->sa_data;
+ ptr = (char *) sap->sa_data;
i = 0;
do {
*ptr++ = val;
} while (++i < ETH_ALEN);
- return (int) (*bufp); /* Error if we don't end at end of string. */
+ return *bufp; /* Error if we don't end at end of string. */
}
#endif
projects / oweals / busybox.git / blobdiff