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Diffstat (limited to 'package/ether-wake/files/ether-wake.c')
| -rw-r--r-- | package/ether-wake/files/ether-wake.c | 392 |
1 files changed, 0 insertions, 392 deletions
diff --git a/package/ether-wake/files/ether-wake.c b/package/ether-wake/files/ether-wake.c deleted file mode 100644 index eef22a7ab2..0000000000 --- a/package/ether-wake/files/ether-wake.c +++ /dev/null @@ -1,392 +0,0 @@ -/* 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. -*/ - -#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 - - -/* - * 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: - */ |