diff options
| -rw-r--r-- | include/applets.h | 3 | ||||
| -rw-r--r-- | include/usage.h | 13 | ||||
| -rw-r--r-- | networking/Config.in | 6 | ||||
| -rw-r--r-- | networking/Makefile.in | 62 | ||||
| -rw-r--r-- | networking/ether-wake.c | 300 |
5 files changed, 352 insertions, 32 deletions
diff --git a/include/applets.h b/include/applets.h index 3f411c269..bc5b36ae3 100644 --- a/include/applets.h +++ b/include/applets.h @@ -188,6 +188,9 @@ #ifdef CONFIG_ENV APPLET(env, env_main, _BB_DIR_USR_BIN, _BB_SUID_NEVER) #endif +#ifdef CONFIG_ETHER_WAKE + APPLET_ODDNAME("ether-wake", etherwake_main, _BB_DIR_USR_BIN, _BB_SUID_NEVER, ether_wake) +#endif #ifdef CONFIG_EXPR APPLET(expr, expr_main, _BB_DIR_USR_BIN, _BB_SUID_NEVER) #endif diff --git a/include/usage.h b/include/usage.h index 316772ea2..c68ae2e0d 100644 --- a/include/usage.h +++ b/include/usage.h @@ -567,7 +567,7 @@ #define eject_full_usage \ "Eject specified DEVICE (or default /dev/cdrom).\n\n" \ "Options:\n" \ - "\tt" USAGE_EJECT_TRAYCLOSE "\tclose tray" + "\t-t" USAGE_EJECT_TRAYCLOSE "\tclose tray" #define env_trivial_usage \ "[-iu] [-] [name=value]... [command]" @@ -578,6 +578,17 @@ "\t-, -i\tstart with an empty environment\n" \ "\t-u\tremove variable from the environment" +#define ether_wake_trivial_usage \ + "[-b] [-i iface] [-p aa:bb:cc:dd[:ee:ff]] MAC" +#define ether_wake_full_usage \ + "Send a magic packet to wake up sleeping machines.\n" \ + "MAC must be a station address (00:11:22:33:44:55) or\n" \ + " a hostname with a known 'ethers' entry.\n\n" \ + "Options:\n" \ + "\t-b\t\tSend wake-up packet to the broadcast address\n" \ + "\t-i iface\tUse interface ifname instead of the default \"eth0\"\n" \ + "\t-p pass\tAppend the four or six byte password PW to the packet\n" + #define expr_trivial_usage \ "EXPRESSION" #define expr_full_usage \ diff --git a/networking/Config.in b/networking/Config.in index a84427981..b6f8ee65d 100644 --- a/networking/Config.in +++ b/networking/Config.in @@ -18,6 +18,12 @@ config CONFIG_ARPING help Ping hosts by ARP packets +config CONFIG_ETHER_WAKE + bool "ether-wake" + default n + help + Send a magic packet to wake up sleeping machines. + config CONFIG_FAKEIDENTD bool "fakeidentd" default n diff --git a/networking/Makefile.in b/networking/Makefile.in index 778d0bade..d44a3d518 100644 --- a/networking/Makefile.in +++ b/networking/Makefile.in @@ -23,35 +23,36 @@ NETWORKING_DIR:=$(top_builddir)/networking/ endif srcdir=$(top_srcdir)/networking NETWORKING-y:= -NETWORKING-$(CONFIG_ARPING) += arping.o -NETWORKING-$(CONFIG_FAKEIDENTD) += fakeidentd.o -NETWORKING-$(CONFIG_FTPGET) += ftpgetput.o -NETWORKING-$(CONFIG_FTPPUT) += ftpgetput.o -NETWORKING-$(CONFIG_HOSTNAME) += hostname.o -NETWORKING-$(CONFIG_HTTPD) += httpd.o -NETWORKING-$(CONFIG_IFCONFIG) += ifconfig.o -NETWORKING-$(CONFIG_IFUPDOWN) += ifupdown.o -NETWORKING-$(CONFIG_INETD) += inetd.o -NETWORKING-$(CONFIG_IP) += ip.o -NETWORKING-$(CONFIG_IPCALC) += ipcalc.o -NETWORKING-$(CONFIG_IPADDR) += ipaddr.o -NETWORKING-$(CONFIG_IPLINK) += iplink.o -NETWORKING-$(CONFIG_IPROUTE) += iproute.o -NETWORKING-$(CONFIG_IPTUNNEL) += iptunnel.o -NETWORKING-$(CONFIG_NAMEIF) += nameif.o -NETWORKING-$(CONFIG_NC) += nc.o -NETWORKING-$(CONFIG_NETSTAT) += netstat.o -NETWORKING-$(CONFIG_NSLOOKUP) += nslookup.o -NETWORKING-$(CONFIG_PING) += ping.o -NETWORKING-$(CONFIG_PING6) += ping6.o -NETWORKING-$(CONFIG_ROUTE) += route.o -NETWORKING-$(CONFIG_TELNET) += telnet.o -NETWORKING-$(CONFIG_TELNETD) += telnetd.o -NETWORKING-$(CONFIG_TFTP) += tftp.o -NETWORKING-$(CONFIG_TRACEROUTE) += traceroute.o -NETWORKING-$(CONFIG_VCONFIG) += vconfig.o -NETWORKING-$(CONFIG_WGET) += wget.o -NETWORKING-$(CONFIG_ZCIP) += zcip.o +NETWORKING-$(CONFIG_ARPING) += arping.o +NETWORKING-$(CONFIG_ETHER_WAKE) += ether-wake.o +NETWORKING-$(CONFIG_FAKEIDENTD) += fakeidentd.o +NETWORKING-$(CONFIG_FTPGET) += ftpgetput.o +NETWORKING-$(CONFIG_FTPPUT) += ftpgetput.o +NETWORKING-$(CONFIG_HOSTNAME) += hostname.o +NETWORKING-$(CONFIG_HTTPD) += httpd.o +NETWORKING-$(CONFIG_IFCONFIG) += ifconfig.o +NETWORKING-$(CONFIG_IFUPDOWN) += ifupdown.o +NETWORKING-$(CONFIG_INETD) += inetd.o +NETWORKING-$(CONFIG_IP) += ip.o +NETWORKING-$(CONFIG_IPCALC) += ipcalc.o +NETWORKING-$(CONFIG_IPADDR) += ipaddr.o +NETWORKING-$(CONFIG_IPLINK) += iplink.o +NETWORKING-$(CONFIG_IPROUTE) += iproute.o +NETWORKING-$(CONFIG_IPTUNNEL) += iptunnel.o +NETWORKING-$(CONFIG_NAMEIF) += nameif.o +NETWORKING-$(CONFIG_NC) += nc.o +NETWORKING-$(CONFIG_NETSTAT) += netstat.o +NETWORKING-$(CONFIG_NSLOOKUP) += nslookup.o +NETWORKING-$(CONFIG_PING) += ping.o +NETWORKING-$(CONFIG_PING6) += ping6.o +NETWORKING-$(CONFIG_ROUTE) += route.o +NETWORKING-$(CONFIG_TELNET) += telnet.o +NETWORKING-$(CONFIG_TELNETD) += telnetd.o +NETWORKING-$(CONFIG_TFTP) += tftp.o +NETWORKING-$(CONFIG_TRACEROUTE) += traceroute.o +NETWORKING-$(CONFIG_VCONFIG) += vconfig.o +NETWORKING-$(CONFIG_WGET) += wget.o +NETWORKING-$(CONFIG_ZCIP) += zcip.o libraries-y+=$(NETWORKING_DIR)$(NETWORKING_AR) @@ -59,7 +60,7 @@ needcrypt-y:= needcrypt-$(CONFIG_FEATURE_HTTPD_AUTH_MD5) := y ifeq ($(needcrypt-y),y) - LIBRARIES += -lcrypt + LIBRARIES += -lcrypt endif $(NETWORKING_DIR)$(NETWORKING_AR): $(patsubst %,$(NETWORKING_DIR)%, $(NETWORKING-y)) @@ -67,4 +68,3 @@ $(NETWORKING_DIR)$(NETWORKING_AR): $(patsubst %,$(NETWORKING_DIR)%, $(NETWORKING $(NETWORKING_DIR)%.o: $(srcdir)/%.c $(CC) $(CFLAGS) $(EXTRA_CFLAGS) -c -o $@ $< - diff --git a/networking/ether-wake.c b/networking/ether-wake.c new file mode 100644 index 000000000..83ceece80 --- /dev/null +++ b/networking/ether-wake.c @@ -0,0 +1,300 @@ +/* + * ether-wake.c - Send a magic packet to wake up sleeping machines. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version + * 2 of the License, or (at your option) any later version. + * + * Author: Donald Becker, http://www.scyld.com/"; http://www.scyld.com/wakeonlan.html + * Busybox port: Christian Volkmann <haveaniceday@online.de> + * Used version of ether-wake.c: v1.09 11/12/2003 Donald Becker, http://www.scyld.com/"; + */ + +/* full usage according Donald Becker + * usage: ether-wake [-i <ifname>] [-p aa:bb:cc:dd[:ee:ff]] 00:11:22:33:44:55\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" + * + * 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" + * + * 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> + +#include <sys/socket.h> +#include <sys/types.h> +#include <sys/ioctl.h> +#include <features.h> +#include <netpacket/packet.h> +#include <net/ethernet.h> +#include <netdb.h> +#include <netinet/ether.h> + +#ifdef __linux__ +#include <linux/if.h> +#endif + +#include "busybox.h" + +/* 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. + */ +#ifdef PF_PACKET +# define whereto_t sockaddr_ll +# define make_socket() socket(PF_PACKET, SOCK_RAW, 0) +#else +# define whereto_t sockaddr +# define make_socket() socket(AF_INET, SOCK_PACKET, SOCK_PACKET) +#endif + +#ifdef DEBUG +# define bb_debug_msg(fmt, args...) fprintf(stderr, fmt, ## args) +void bb_debug_dump_packet(unsigned char *outpack, int pktsize) +{ + int i; + printf("packet dump:\n"); + for (i = 0; i < pktsize; ++i) { + printf("%2.2x ", outpack[i]); + if (i % 20 == 19) printf("\n"); + } + printf("\n\n"); +} +#else +# define bb_debug_msg(fmt, args...) +# define bb_debug_dump_packet(outpack, pktsize) +#endif + +static inline void get_dest_addr(const char *arg, struct ether_addr *eaddr); +static inline int get_fill(unsigned char *pkt, struct ether_addr *eaddr, int broadcast); +static inline int get_wol_pw(const char *ethoptarg, unsigned char *wol_passwd); + +int etherwake_main(int argc, char *argv[]) +{ + char *ifname = "eth0", *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 = bb_getopt_ulflags(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(); + if (s < 0) + bb_perror_msg_and_die(bb_msg_can_not_create_raw_socket); + + /* now that we have a raw socket we can drop root */ + setuid(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; + + strcpy(if_hwaddr.ifr_name, ifname); + 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]*/) { + int one = 1; + if (setsockopt(s, SOL_SOCKET, SO_BROADCAST, (void *)&one, sizeof(one)) < 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; +} + +/* Convert the host ID string to a MAC address. + * The string may be a: + * Host name + * IP address string + * MAC address string +*/ +static inline void get_dest_addr(const char *hostid, struct ether_addr *eaddr) +{ + struct ether_addr *eap; + + eap = ether_aton(hostid); + if (eap) { + *eaddr = *eap; + bb_debug_msg("The target station address is %s\n\n", ether_ntoa(eaddr)); + } else if (ether_hostton(hostid, eaddr) == 0) { + bb_debug_msg("Station address for hostname %s is %s\n\n", hostid, ether_ntoa(eaddr)); + } else + bb_show_usage(); +} + +static inline int get_fill(unsigned char *pkt, struct ether_addr *eaddr, int broadcast) +{ + int offset, i; + unsigned char *station_addr = eaddr->ether_addr_octet; + + if (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; + } + + return offset; +} + +static inline int get_wol_pw(const char *ethoptarg, unsigned char *wol_passwd) +{ + int passwd[6]; + int byte_cnt, i; + + /* handle MAC format */ + byte_cnt = sscanf(ethoptarg, "%2x:%2x:%2x:%2x:%2x:%2x", + &passwd[0], &passwd[1], &passwd[2], + &passwd[3], &passwd[4], &passwd[5]); + /* handle IP format */ + if (byte_cnt < 4) + byte_cnt = sscanf(ethoptarg, "%d.%d.%d.%d", + &passwd[0], &passwd[1], &passwd[2], &passwd[3]); + if (byte_cnt < 4) { + bb_error_msg("Unable to read the Wake-On-LAN pass"); + return 0; + } + + for (i = 0; i < byte_cnt; ++i) + wol_passwd[i] = passwd[i]; + + bb_debug_msg("password: %2.2x %2.2x %2.2x %2.2x (%d)\n\n", + wol_passwd[0], wol_passwd[1], wol_passwd[2], wol_passwd[3], + byte_cnt); + + return byte_cnt; +} |