/* Called only from main, once */
static int arp_set(char **args)
{
char *host;
struct arpreq req;
struct sockaddr sa;
int flags;
memset(&req, 0, sizeof(req));
host = *args++;
if (ap->input(host, &sa) < 0) {
bb_herror_msg_and_die("%s", host);
}
/* If a host has more than one address, use the correct one! */
memcpy(&req.arp_pa, &sa, sizeof(struct sockaddr));
/* Fetch the hardware address. */
if (*args == NULL) {
bb_error_msg_and_die("need hardware address");
}
if (option_mask32 & ARP_OPT_D) {
arp_getdevhw(*args++, &req.arp_ha, hw_set ? hw : NULL);
} else {
if (hw->input(*args++, &req.arp_ha) < 0) {
bb_error_msg_and_die("invalid hardware address");
}
}
/* Check out any modifiers. */
flags = ATF_PERM | ATF_COM;
while (*args != NULL) {
switch (index_in_strings(options, *args)) {
case 0: /* "pub" */
flags |= ATF_PUBL;
args++;
break;
case 1: /* "priv" */
flags &= ~ATF_PUBL;
args++;
break;
case 2: /* "temp" */
flags &= ~ATF_PERM;
args++;
break;
case 3: /* "trail" */
flags |= ATF_USETRAILERS;
args++;
break;
case 4: /* "dontpub" */
#ifdef HAVE_ATF_DONTPUB
flags |= ATF_DONTPUB;
#else
bb_error_msg("feature ATF_DONTPUB is not supported");
#endif
args++;
break;
case 5: /* "auto" */
#ifdef HAVE_ATF_MAGIC
flags |= ATF_MAGIC;
#else
bb_error_msg("feature ATF_MAGIC is not supported");
#endif
args++;
break;
case 6: /* "dev" */
if (*++args == NULL)
bb_show_usage();
device = *args;
args++;
break;
case 7: /* "netmask" */
if (*++args == NULL)
bb_show_usage();
if (strcmp(*args, "255.255.255.255") != 0) {
host = *args;
if (ap->input(host, &sa) < 0) {
bb_herror_msg_and_die("%s", host);
}
memcpy(&req.arp_netmask, &sa, sizeof(struct sockaddr));
flags |= ATF_NETMASK;
}
args++;
break;
default:
bb_show_usage();
break;
}
}
/* Fill in the remainder of the request. */
req.arp_flags = flags;
strncpy(req.arp_dev, device, sizeof(req.arp_dev));
/* Call the kernel. */
if (option_mask32 & ARP_OPT_v)
bb_error_msg("SIOCSARP()");
xioctl(sockfd, SIOCSARP, &req);
return 0;
}
/* Set an entry in the ARP cache. */
static int arp_set(char **args)
{
char host[128];
struct arpreq req;
struct sockaddr_storage ss;
struct sockaddr *sa = (struct sockaddr *)&ss;
int flags;
memset((char *) &req, 0, sizeof(req));
/* Resolve the host name. */
if (*args == NULL) {
fprintf(stderr, _("arp: need host name\n"));
return (-1);
}
safe_strncpy(host, *args++, (sizeof host));
if (ap->input(0, host, &ss) < 0) {
ap->herror(host);
return (-1);
}
/* If a host has more than one address, use the correct one! */
memcpy((char *) &req.arp_pa, (char *) sa, sizeof(struct sockaddr));
/* Fetch the hardware address. */
if (*args == NULL) {
fprintf(stderr, _("arp: need hardware address\n"));
return (-1);
}
if (opt_D) {
if (arp_getdevhw(*args++, &req.arp_ha, hw_set ? hw : NULL) < 0)
return (-1);
} else {
if (hw->input(*args++, &ss) < 0) {
fprintf(stderr, _("arp: invalid hardware address\n"));
return (-1);
}
memcpy(&req.arp_ha, sa, sizeof(*sa));
}
/* Check out any modifiers. */
flags = ATF_PERM | ATF_COM;
while (*args != NULL) {
if (!strcmp(*args, "temp")) {
flags &= ~ATF_PERM;
args++;
continue;
}
if (!strcmp(*args, "pub")) {
flags |= ATF_PUBL;
args++;
continue;
}
if (!strcmp(*args, "priv")) {
flags &= ~ATF_PUBL;
args++;
continue;
}
if (!strcmp(*args, "trail")) {
flags |= ATF_USETRAILERS;
args++;
continue;
}
if (!strcmp(*args, "dontpub")) {
#ifdef ATF_DONTPUB
flags |= ATF_DONTPUB;
#else
ENOSUPP("arp", "ATF_DONTPUB");
#endif
args++;
continue;
}
if (!strcmp(*args, "auto")) {
#ifdef ATF_MAGIC
flags |= ATF_MAGIC;
#else
ENOSUPP("arp", "ATF_MAGIC");
#endif
args++;
continue;
}
if (!strcmp(*args, "dev")) {
if (*++args == NULL)
usage();
safe_strncpy(device, *args, sizeof(device));
args++;
continue;
}
if (!strcmp(*args, "netmask")) {
if (*++args == NULL)
usage();
if (strcmp(*args, "255.255.255.255") != 0) {
safe_strncpy(host, *args, (sizeof host));
if (ap->input(0, host, &ss) < 0) {
ap->herror(host);
return (-1);
}
memcpy((char *) &req.arp_netmask, (char *) sa,
sizeof(struct sockaddr));
flags |= ATF_NETMASK;
}
args++;
continue;
}
usage();
}
/* Fill in the remainder of the request. */
req.arp_flags = flags;
safe_strncpy(req.arp_dev, device, sizeof(req.arp_dev));
/* Call the kernel. */
if (opt_v)
fprintf(stderr, "arp: SIOCSARP()\n");
if (ioctl(sockfd, SIOCSARP, &req) < 0) {
perror("SIOCSARP");
return (-1);
}
return (0);
}
/* Set an entry in the ARP cache. */
static int arp_set(char **args)
{
char host[128];
struct arpreq req;
struct sockaddr sa;
int flags;
memset((char *) &req, 0, sizeof(req));
/* Resolve the host name. */
if (*args == NULL) {
bb_error_msg("need host name\n");
return -1;
}
safe_strncpy(host, *args++, (sizeof host));
if (ap->input(0, host, &sa) < 0) {
bb_herror_msg("%s", host);
return -1;
}
/* If a host has more than one address, use the correct one! */
memcpy((char *) &req.arp_pa, (char *) &sa, sizeof(struct sockaddr));
/* Fetch the hardware address. */
if (*args == NULL) {
bb_error_msg("need hardware address\n");
return -1;
}
if (opt_D) {
if (arp_getdevhw(*args++, &req.arp_ha, hw_set ? hw : NULL) < 0)
return (-1);
} else {
if (hw->input(*args++, &req.arp_ha) < 0) {
bb_error_msg("invalid hardware address\n");
return -1;
}
}
/* Check out any modifiers. */
flags = ATF_PERM | ATF_COM;
while (*args != NULL) {
if (!strcmp(*args, "temp")) {
flags &= ~ATF_PERM;
args++;
continue;
}
if (!strcmp(*args, "pub")) {
flags |= ATF_PUBL;
args++;
continue;
}
if (!strcmp(*args, "priv")) {
flags &= ~ATF_PUBL;
args++;
continue;
}
if (!strcmp(*args, "trail")) {
flags |= ATF_USETRAILERS;
args++;
continue;
}
if (!strcmp(*args, "dontpub")) {
#ifdef HAVE_ATF_DONTPUB
flags |= ATF_DONTPUB;
#else
bb_error_msg("feature ATF_DONTPUB is not supported");
#endif
args++;
continue;
}
if (!strcmp(*args, "auto")) {
#ifdef HAVE_ATF_MAGIC
flags |= ATF_MAGIC;
#else
bb_error_msg("feature ATF_MAGIC is not supported");
#endif
args++;
continue;
}
if (!strcmp(*args, "dev")) {
if (*++args == NULL)
bb_show_usage();
safe_strncpy(device, *args, sizeof(device));
args++;
continue;
}
if (!strcmp(*args, "netmask")) {
if (*++args == NULL)
bb_show_usage();
if (strcmp(*args, "255.255.255.255") != 0) {
strcpy(host, *args);
if (ap->input(0, host, &sa) < 0) {
bb_herror_msg("%s", host);
return (-1);
}
memcpy((char *) &req.arp_netmask, (char *) &sa,
sizeof(struct sockaddr));
flags |= ATF_NETMASK;
}
args++;
continue;
}
bb_show_usage();
}
/* Fill in the remainder of the request. */
req.arp_flags = flags;
strcpy(req.arp_dev, device);
/* Call the kernel. */
if (opt_v)
bb_error_msg("SIOCSARP()\n");
if (ioctl(sockfd, SIOCSARP, &req) < 0) {
perror("SIOCSARP");
return -1;
}
return 0;
}
