diff options
Diffstat (limited to 'usr.sbin/wake/wake.c')
| -rw-r--r-- | usr.sbin/wake/wake.c | 213 |
1 files changed, 0 insertions, 213 deletions
diff --git a/usr.sbin/wake/wake.c b/usr.sbin/wake/wake.c deleted file mode 100644 index d6ba931..0000000 --- a/usr.sbin/wake/wake.c +++ /dev/null @@ -1,213 +0,0 @@ -/* - * Copyright (C) 2006, 2007, 2008, 2009, 2010 Marc Balmer <marc@msys.ch> - * Copyright (C) 2000 Eugene M. Kim. All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Author's name may not be used endorse or promote products derived - * from this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR - * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED - * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE - * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, - * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES - * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR - * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, - * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING - * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE - * POSSIBILITY OF SUCH DAMAGE. - */ - -#include <sys/cdefs.h> -__FBSDID("$FreeBSD$"); - -#include <sys/ioctl.h> -#include <sys/socket.h> -#include <sys/time.h> -#include <net/bpf.h> -#include <net/if.h> -#include <net/if_dl.h> -#include <net/if_types.h> -#include <netinet/in.h> -#include <netinet/if_ether.h> - -#include <err.h> -#include <fcntl.h> -#include <ifaddrs.h> -#include <stdio.h> -#include <stdlib.h> -#include <string.h> -#include <unistd.h> - -#define _PATH_BPF "/dev/bpf" - -#ifndef SYNC_LEN -#define SYNC_LEN 6 -#endif - -#ifndef DESTADDR_COUNT -#define DESTADDR_COUNT 16 -#endif - -static int bind_if_to_bpf(char const *ifname, int bpf); -static int find_ether(char *dst, size_t len); -static int get_ether(char const *text, struct ether_addr *addr); -static int send_wakeup(int bpf, struct ether_addr const *addr); -static void usage(void); -static int wake(int bpf, const char *host); - -static void -usage(void) -{ - - (void)fprintf(stderr, "usage: wake [interface] lladdr [lladdr ...]\n"); - exit(1); -} - -static int -wake(int bpf, const char *host) -{ - struct ether_addr macaddr; - - if (get_ether(host, &macaddr) == -1) - return (-1); - - return send_wakeup(bpf, &macaddr); -} - -static int -bind_if_to_bpf(char const *ifname, int bpf) -{ - struct ifreq ifr; - u_int dlt; - - if (strlcpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name)) >= - sizeof(ifr.ifr_name)) - return (-1); - - if (ioctl(bpf, BIOCSETIF, &ifr) == -1) - return (-1); - - if (ioctl(bpf, BIOCGDLT, &dlt) == -1) - return (-1); - - if (dlt != DLT_EN10MB) - return (-1); - - return (0); -} - -static int -find_ether(char *dst, size_t len) -{ - struct ifaddrs *ifap, *ifa; - struct sockaddr_dl *sdl = NULL; - int nifs; - - if (dst == NULL || len == 0) - return 0; - - if (getifaddrs(&ifap) != 0) - return -1; - - /* XXX also check the link state */ - for (nifs = 0, ifa = ifap; ifa; ifa = ifa->ifa_next) - if (ifa->ifa_addr->sa_family == AF_LINK && - ifa->ifa_flags & IFF_UP && ifa->ifa_flags & IFF_RUNNING) { - sdl = (struct sockaddr_dl *)ifa->ifa_addr; - if (sdl->sdl_type == IFT_ETHER) { - strlcpy(dst, ifa->ifa_name, len); - nifs++; - } - } - - freeifaddrs(ifap); - return nifs == 1 ? 0 : -1; -} - -static int -get_ether(char const *text, struct ether_addr *addr) -{ - struct ether_addr *paddr; - - paddr = ether_aton(text); - if (paddr != NULL) { - *addr = *paddr; - return (0); - } - if (ether_hostton(text, addr)) { - warnx("no match for host %s found", text); - return (-1); - } - return (0); -} - -static int -send_wakeup(int bpf, struct ether_addr const *addr) -{ - struct { - struct ether_header hdr; - u_char data[SYNC_LEN + ETHER_ADDR_LEN * DESTADDR_COUNT]; - } __packed pkt; - u_char *p; - ssize_t bw; - ssize_t len; - int i; - - (void)memset(pkt.hdr.ether_dhost, 0xff, sizeof(pkt.hdr.ether_dhost)); - pkt.hdr.ether_type = htons(0); - (void)memset(pkt.data, 0xff, SYNC_LEN); - for (p = pkt.data + SYNC_LEN, i = 0; i < DESTADDR_COUNT; - p += ETHER_ADDR_LEN, i++) - bcopy(addr->octet, p, ETHER_ADDR_LEN); - p = (u_char *)&pkt; - len = sizeof(pkt); - bw = 0; - while (len) { - if ((bw = write(bpf, p, len)) == -1) { - warn("write()"); - return (-1); - } - len -= bw; - p += bw; - } - return (0); -} - -int -main(int argc, char *argv[]) -{ - int bpf, n; - char ifname[IF_NAMESIZE]; - - if (argc < 2) - usage(); - - if ((bpf = open(_PATH_BPF, O_RDWR)) == -1) - err(1, "Cannot open bpf interface"); - - n = 2; - if (bind_if_to_bpf(argv[1], bpf) == -1) { - if (find_ether(ifname, sizeof(ifname))) - err(1, "Failed to determine ethernet interface"); - if (bind_if_to_bpf(ifname, bpf) == -1) - err(1, "Cannot bind to interface `%s'", ifname); - --n; - } else - strlcpy(ifname, argv[1], sizeof(ifname)); - - if (n >= argc) - usage(); - for (; n < argc; n++) - if (wake(bpf, argv[n])) - warn("Cannot send Wake on LAN frame over `%s' to `%s'", - ifname, argv[n]); - - return (0); -} |
