+++ /dev/null
-/* ether-wake.c: Send a magic packet to wake up sleeping machines. */
-
-static char version_msg[] =
-"ether-wake.c: v1.09 11/12/2003 Donald Becker, http://www.scyld.com/";
-static char brief_usage_msg[] =
-"usage: ether-wake [-i <ifname>] [-p aa:bb:cc:dd[:ee:ff]] 00:11:22:33:44:55\n"
-" Use '-u' to see the complete set of options.\n";
-static char usage_msg[] =
-"usage: ether-wake [-i <ifname>] [-p aa:bb:cc:dd[:ee:ff]] 00:11:22:33:44:55\n"
-"\n"
-" This program generates and transmits a Wake-On-LAN (WOL)\n"
-" \"Magic Packet\", used for restarting machines that have been\n"
-" soft-powered-down (ACPI D3-warm state).\n"
-" It currently generates the standard AMD Magic Packet format, with\n"
-" an optional password appended.\n"
-"\n"
-" The single required parameter is the Ethernet MAC (station) address\n"
-" of the machine to wake or a host ID with known NSS 'ethers' entry.\n"
-" The MAC address may be found with the 'arp' program while the target\n"
-" machine is awake.\n"
-"\n"
-" Options:\n"
-" -b Send wake-up packet to the broadcast address.\n"
-" -D Increase the debug level.\n"
-" -i ifname Use interface IFNAME instead of the default 'eth0'.\n"
-" -p <pw> Append the four or six byte password PW to the packet.\n"
-" A password is only required for a few adapter types.\n"
-" The password may be specified in ethernet hex format\n"
-" or dotted decimal (Internet address)\n"
-" -p 00:22:44:66:88:aa\n"
-" -p 192.168.1.1\n";
-
-/*
- This program generates and transmits a Wake-On-LAN (WOL) "Magic Packet",
- used for restarting machines that have been soft-powered-down
- (ACPI D3-warm state). It currently generates the standard AMD Magic Packet
- format, with an optional password appended.
-
- This software may be used and distributed according to the terms
- of the GNU Public License, incorporated herein by reference.
- Contact the author for use under other terms.
-
- This source file was originally part of the network tricks package, and
- is now distributed to support the Scyld Beowulf system.
- Copyright 1999-2003 Donald Becker and Scyld Computing Corporation.
-
- The author may be reached as becker@scyld, or C/O
- Scyld Computing Corporation
- 914 Bay Ridge Road, Suite 220
- Annapolis MD 21403
-
- Notes:
- On some systems dropping root capability allows the process to be
- dumped, traced or debugged.
- If someone traces this program, they get control of a raw socket.
- Linux handles this safely, but beware when porting this program.
-
- An alternative to needing 'root' is using a UDP broadcast socket, however
- doing so only works with adapters configured for unicast+broadcast Rx
- filter. That configuration consumes more power.
-*/
-\f
-#include <unistd.h>
-#include <stdlib.h>
-#include <stdio.h>
-#include <errno.h>
-#include <ctype.h>
-#include <string.h>
-
-#if 0 /* Only exists on some versions. */
-#include <ioctls.h>
-#endif
-
-#include <sys/socket.h>
-
-#include <sys/types.h>
-#include <sys/ioctl.h>
-#include <linux/if.h>
-
-#include <features.h>
-#if __GLIBC__ >= 2 && __GLIBC_MINOR >= 1
-#include <netpacket/packet.h>
-#include <net/ethernet.h>
-#else
-#include <asm/types.h>
-#include <linux/if_packet.h>
-#include <linux/if_ether.h>
-#endif
-#include <netdb.h>
-#include <netinet/ether.h>
-
-/* Grrr, no consistency between include versions.
- Enable this if setsockopt() isn't declared with your library. */
-#if 0
-extern int setsockopt __P ((int __fd, int __level, int __optname,
- __ptr_t __optval, int __optlen));
-#else /* New, correct head files. */
-#include <sys/socket.h>
-#endif
-
-u_char outpack[1000];
-int outpack_sz = 0;
-int debug = 0;
-u_char wol_passwd[6];
-int wol_passwd_sz = 0;
-
-static int opt_no_src_addr = 0, opt_broadcast = 0;
-
-static int get_dest_addr(const char *arg, struct ether_addr *eaddr);
-static int get_fill(unsigned char *pkt, struct ether_addr *eaddr);
-static int get_wol_pw(const char *optarg);
-
-int main(int argc, char *argv[])
-{
- char *ifname = "eth0";
- int one = 1; /* True, for socket options. */
- int s; /* Raw socket */
- int errflag = 0, verbose = 0, do_version = 0;
- int perm_failure = 0;
- int i, c, pktsize;
-#if defined(PF_PACKET)
- struct sockaddr_ll whereto;
-#else
- struct sockaddr whereto; /* who to wake up */
-#endif
- struct ether_addr eaddr;
-
- while ((c = getopt(argc, argv, "bDi:p:uvV")) != -1)
- switch (c) {
- case 'b': opt_broadcast++; break;
- case 'D': debug++; break;
- case 'i': ifname = optarg; break;
- case 'p': get_wol_pw(optarg); break;
- case 'u': printf(usage_msg); return 0;
- case 'v': verbose++; break;
- case 'V': do_version++; break;
- case '?':
- errflag++;
- }
- if (verbose || do_version)
- printf("%s\n", version_msg);
- if (errflag) {
- fprintf(stderr, brief_usage_msg);
- return 3;
- }
-
- if (optind == argc) {
- fprintf(stderr, "Specify the Ethernet address as 00:11:22:33:44:55.\n");
- return 3;
- }
-
- /* Note: PF_INET, SOCK_DGRAM, IPPROTO_UDP would allow SIOCGIFHWADDR to
- work as non-root, but we need SOCK_PACKET to specify the Ethernet
- destination address. */
-#if defined(PF_PACKET)
- s = socket(PF_PACKET, SOCK_RAW, 0);
-#else
- s = socket(AF_INET, SOCK_PACKET, SOCK_PACKET);
-#endif
- if (s < 0) {
- if (errno == EPERM)
- fprintf(stderr, "ether-wake: This program must be run as root.\n");
- else
- perror("ether-wake: socket");
- perm_failure++;
- }
- /* Don't revert if debugging allows a normal user to get the raw socket. */
- setuid(getuid());
-
- /* We look up the station address before reporting failure so that
- errors may be reported even when run as a normal user.
- */
- if (get_dest_addr(argv[optind], &eaddr) != 0)
- return 3;
- if (perm_failure && ! debug)
- return 2;
-
- pktsize = get_fill(outpack, &eaddr);
-
- /* Fill in the source address, if possible.
- The code to retrieve the local station address is Linux specific. */
- if (! opt_no_src_addr) {
- struct ifreq if_hwaddr;
- unsigned char *hwaddr = if_hwaddr.ifr_hwaddr.sa_data;
-
- strcpy(if_hwaddr.ifr_name, ifname);
- if (ioctl(s, SIOCGIFHWADDR, &if_hwaddr) < 0) {
- fprintf(stderr, "SIOCGIFHWADDR on %s failed: %s\n", ifname,
- strerror(errno));
- /* Magic packets still work if our source address is bogus, but
- we fail just to be anal. */
- return 1;
- }
- memcpy(outpack+6, if_hwaddr.ifr_hwaddr.sa_data, 6);
-
- if (verbose) {
- printf("The hardware address (SIOCGIFHWADDR) of %s is type %d "
- "%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x.\n", ifname,
- if_hwaddr.ifr_hwaddr.sa_family, hwaddr[0], hwaddr[1],
- hwaddr[2], hwaddr[3], hwaddr[4], hwaddr[5]);
- }
- }
-
- if (wol_passwd_sz > 0) {
- memcpy(outpack+pktsize, wol_passwd, wol_passwd_sz);
- pktsize += wol_passwd_sz;
- }
-
- if (verbose > 1) {
- printf("The final packet is: ");
- for (i = 0; i < pktsize; i++)
- printf(" %2.2x", outpack[i]);
- printf(".\n");
- }
-
- /* This is necessary for broadcasts to work */
- if (setsockopt(s, SOL_SOCKET, SO_BROADCAST, (char *)&one, sizeof(one)) < 0)
- perror("setsockopt: SO_BROADCAST");
-
-#if defined(PF_PACKET)
- {
- struct ifreq ifr;
- strncpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
- if (ioctl(s, SIOCGIFINDEX, &ifr) == -1) {
- fprintf(stderr, "SIOCGIFINDEX on %s failed: %s\n", ifname,
- strerror(errno));
- return 1;
- }
- 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 ((i = sendto(s, outpack, pktsize, 0, (struct sockaddr *)&whereto,
- sizeof(whereto))) < 0)
- perror("sendto");
- else if (debug)
- printf("Sendto worked ! %d.\n", i);
-
-#ifdef USE_SEND
- if (bind(s, (struct sockaddr *)&whereto, sizeof(whereto)) < 0)
- perror("bind");
- else if (send(s, outpack, 100, 0) < 0)
- perror("send");
-#endif
-#ifdef USE_SENDMSG
- {
- struct msghdr msghdr = { 0,};
- struct iovec iovector[1];
- msghdr.msg_name = &whereto;
- msghdr.msg_namelen = sizeof(whereto);
- msghdr.msg_iov = iovector;
- msghdr.msg_iovlen = 1;
- iovector[0].iov_base = outpack;
- iovector[0].iov_len = pktsize;
- if ((i = sendmsg(s, &msghdr, 0)) < 0)
- perror("sendmsg");
- else if (debug)
- printf("sendmsg worked, %d (%d).\n", i, errno);
- }
-#endif
-
- return 0;
-}
-
-/* Convert the host ID string to a MAC address.
- The string may be a
- Host name
- IP address string
- MAC address string
-*/
-
-static int get_dest_addr(const char *hostid, struct ether_addr *eaddr)
-{
- struct ether_addr *eap;
-
- eap = ether_aton(hostid);
- if (eap) {
- *eaddr = *eap;
- if (debug)
- fprintf(stderr, "The target station address is %s.\n",
- ether_ntoa(eaddr));
- } else if (ether_hostton(hostid, eaddr) == 0) {
- if (debug)
- fprintf(stderr, "Station address for hostname %s is %s.\n",
- hostid, ether_ntoa(eaddr));
- } else {
- (void)fprintf(stderr,
- "ether-wake: The Magic Packet host address must be "
- "specified as\n"
- " - a station address, 00:11:22:33:44:55, or\n"
- " - a hostname with a known 'ethers' entry.\n");
- return -1;
- }
- return 0;
-}
-
-
-static int get_fill(unsigned char *pkt, struct ether_addr *eaddr)
-{
- int offset, i;
- unsigned char *station_addr = eaddr->ether_addr_octet;
-
- if (opt_broadcast)
- memset(pkt+0, 0xff, 6);
- else
- memcpy(pkt, station_addr, 6);
- memcpy(pkt+6, station_addr, 6);
- pkt[12] = 0x08; /* Or 0x0806 for ARP, 0x8035 for RARP */
- pkt[13] = 0x42;
- offset = 14;
-
- memset(pkt+offset, 0xff, 6);
- offset += 6;
-
- for (i = 0; i < 16; i++) {
- memcpy(pkt+offset, station_addr, 6);
- offset += 6;
- }
- if (debug) {
- fprintf(stderr, "Packet is ");
- for (i = 0; i < offset; i++)
- fprintf(stderr, " %2.2x", pkt[i]);
- fprintf(stderr, ".\n");
- }
- return offset;
-}
-
-static int get_wol_pw(const char *optarg)
-{
- int passwd[6];
- int byte_cnt;
- int i;
-
- byte_cnt = sscanf(optarg, "%2x:%2x:%2x:%2x:%2x:%2x",
- &passwd[0], &passwd[1], &passwd[2],
- &passwd[3], &passwd[4], &passwd[5]);
- if (byte_cnt < 4)
- byte_cnt = sscanf(optarg, "%d.%d.%d.%d",
- &passwd[0], &passwd[1], &passwd[2], &passwd[3]);
- if (byte_cnt < 4) {
- fprintf(stderr, "Unable to read the Wake-On-LAN password.\n");
- return 0;
- }
- printf(" The Magic packet password is %2.2x %2.2x %2.2x %2.2x (%d).\n",
- passwd[0], passwd[1], passwd[2], passwd[3], byte_cnt);
- for (i = 0; i < byte_cnt; i++)
- wol_passwd[i] = passwd[i];
- return wol_passwd_sz = byte_cnt;
-}
-
-#if 0
-{
- to = (struct sockaddr_in *)&whereto;
- to->sin_family = AF_INET;
- if (inet_aton(target, &to->sin_addr)) {
- hostname = target;
- }
- memset (&sa, 0, sizeof sa);
- sa.sa_family = AF_INET;
- strncpy (sa.sa_data, interface, sizeof sa.sa_data);
- sendto (sock, buf, bufix + len, 0, &sa, sizeof sa);
- strncpy (sa.sa_data, interface, sizeof sa.sa_data);
-#if 1
- sendto (sock, buf, bufix + len, 0, &sa, sizeof sa);
-#else
- bind (sock, &sa, sizeof sa);
- connect();
- send (sock, buf, bufix + len, 0);
-#endif
-}
-#endif
-
-\f
-/*
- * Local variables:
- * compile-command: "gcc -O -Wall -o ether-wake ether-wake.c"
- * c-indent-level: 4
- * c-basic-offset: 4
- * c-indent-level: 4
- * tab-width: 4
- * End:
- */
projects / openwrt / staging / dedeckeh.git / blobdiff