int ether_wake_main(int argc, char *argv[])
{
const char *ifname = "eth0";
char *pass = NULL;
unsigned long flags;
unsigned char wol_passwd[6];
int wol_passwd_sz = 0;
int s; /* Raw socket */
int pktsize;
unsigned char outpack[1000];
struct ether_addr eaddr;
struct whereto_t whereto; /* who to wake up */
/* handle misc user options */
flags = getopt32(argc, argv, "bi:p:", &ifname, &pass);
if (optind == argc)
bb_show_usage();
if (pass)
wol_passwd_sz = get_wol_pw(pass, wol_passwd);
/* create the raw socket */
s = make_socket();
/* now that we have a raw socket we can drop root */
xsetuid(getuid());
/* look up the dest mac address */
get_dest_addr(argv[optind], &eaddr);
/* fill out the header of the packet */
pktsize = get_fill(outpack, &eaddr, flags /*& 1 [OPT_BROADCAST]*/);
bb_debug_dump_packet(outpack, pktsize);
/* Fill in the source address, if possible. */
#ifdef __linux__
{
struct ifreq if_hwaddr;
strncpy(if_hwaddr.ifr_name, ifname, sizeof(if_hwaddr.ifr_name));
if (ioctl(s, SIOCGIFHWADDR, &if_hwaddr) < 0)
bb_perror_msg_and_die("SIOCGIFHWADDR on %s failed", ifname);
memcpy(outpack+6, if_hwaddr.ifr_hwaddr.sa_data, 6);
# ifdef DEBUG
{
unsigned char *hwaddr = if_hwaddr.ifr_hwaddr.sa_data;
printf("The hardware address (SIOCGIFHWADDR) of %s is type %d "
"%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x\n\n", ifname,
if_hwaddr.ifr_hwaddr.sa_family, hwaddr[0], hwaddr[1],
hwaddr[2], hwaddr[3], hwaddr[4], hwaddr[5]);
}
# endif
}
#endif /* __linux__ */
bb_debug_dump_packet(outpack, pktsize);
/* append the password if specified */
if (wol_passwd_sz > 0) {
memcpy(outpack+pktsize, wol_passwd, wol_passwd_sz);
pktsize += wol_passwd_sz;
}
bb_debug_dump_packet(outpack, pktsize);
/* This is necessary for broadcasts to work */
if (flags /*& 1 [OPT_BROADCAST]*/) {
if (setsockopt_broadcast(s) < 0)
bb_perror_msg("SO_BROADCAST");
}
#if defined(PF_PACKET)
{
struct ifreq ifr;
strncpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
if (ioctl(s, SIOCGIFINDEX, &ifr) == -1)
bb_perror_msg_and_die("SIOCGIFINDEX");
memset(&whereto, 0, sizeof(whereto));
whereto.sll_family = AF_PACKET;
whereto.sll_ifindex = ifr.ifr_ifindex;
/* The manual page incorrectly claims the address must be filled.
We do so because the code may change to match the docs. */
whereto.sll_halen = ETH_ALEN;
memcpy(whereto.sll_addr, outpack, ETH_ALEN);
}
#else
whereto.sa_family = 0;
strcpy(whereto.sa_data, ifname);
#endif
if (sendto(s, outpack, pktsize, 0, (struct sockaddr *)&whereto, sizeof(whereto)) < 0)
bb_perror_msg(bb_msg_write_error);
close(s);
return EXIT_SUCCESS;
}
int ether_wake_main(int argc UNUSED_PARAM, char **argv)
{
const char *ifname = "eth0";
char *pass;
unsigned flags;
unsigned char wol_passwd[6];
int wol_passwd_sz = 0;
int s; /* Raw socket */
int pktsize;
unsigned char outpack[1000];
struct ether_addr eaddr;
struct whereto_t whereto; /* who to wake up */
/* handle misc user options */
opt_complementary = "=1";
flags = getopt32(argv, "bi:p:", &ifname, &pass);
if (flags & 4) /* -p */
wol_passwd_sz = get_wol_pw(pass, wol_passwd);
flags &= 1; /* we further interested only in -b [bcast] flag */
/* create the raw socket */
s = make_socket();
/* now that we have a raw socket we can drop root */
/* xsetuid(getuid()); - but save on code size... */
/* look up the dest mac address */
get_dest_addr(argv[optind], &eaddr);
/* fill out the header of the packet */
pktsize = get_fill(outpack, &eaddr, flags /* & 1 OPT_BROADCAST */);
bb_debug_dump_packet(outpack, pktsize);
/* Fill in the source address, if possible. */
#ifdef __linux__
{
struct ifreq if_hwaddr;
strncpy_IFNAMSIZ(if_hwaddr.ifr_name, ifname);
ioctl_or_perror_and_die(s, SIOCGIFHWADDR, &if_hwaddr, "SIOCGIFHWADDR on %s failed", ifname);
memcpy(outpack+6, if_hwaddr.ifr_hwaddr.sa_data, 6);
# ifdef DEBUG
{
unsigned char *hwaddr = if_hwaddr.ifr_hwaddr.sa_data;
printf("The hardware address (SIOCGIFHWADDR) of %s is type %d "
"%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x\n\n", ifname,
if_hwaddr.ifr_hwaddr.sa_family, hwaddr[0], hwaddr[1],
hwaddr[2], hwaddr[3], hwaddr[4], hwaddr[5]);
}
# endif
}
#endif /* __linux__ */
bb_debug_dump_packet(outpack, pktsize);
/* append the password if specified */
if (wol_passwd_sz > 0) {
memcpy(outpack+pktsize, wol_passwd, wol_passwd_sz);
pktsize += wol_passwd_sz;
}
bb_debug_dump_packet(outpack, pktsize);
/* This is necessary for broadcasts to work */
if (flags /* & 1 OPT_BROADCAST */) {
if (setsockopt_broadcast(s) != 0)
bb_perror_msg("SO_BROADCAST");
}
#if defined(PF_PACKET)
{
struct ifreq ifr;
strncpy_IFNAMSIZ(ifr.ifr_name, ifname);
xioctl(s, SIOCGIFINDEX, &ifr);
memset(&whereto, 0, sizeof(whereto));
whereto.sll_family = AF_PACKET;
whereto.sll_ifindex = ifr.ifr_ifindex;
/* The manual page incorrectly claims the address must be filled.
We do so because the code may change to match the docs. */
whereto.sll_halen = ETH_ALEN;
memcpy(whereto.sll_addr, outpack, ETH_ALEN);
}
#else
whereto.sa_family = 0;
strcpy(whereto.sa_data, ifname);
#endif
xsendto(s, outpack, pktsize, (struct sockaddr *)&whereto, sizeof(whereto));
if (ENABLE_FEATURE_CLEAN_UP)
close(s);
return EXIT_SUCCESS;
}