import ether-wake applet by haveaniceday Bug 252
This commit is contained in:
Mike Frysinger
parent
348e84c202
commit
b662f0d58b
@ -188,6 +188,9 @@
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#ifdef CONFIG_ENV
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APPLET(env, env_main, _BB_DIR_USR_BIN, _BB_SUID_NEVER)
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#endif
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#ifdef CONFIG_ETHER_WAKE
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APPLET_ODDNAME("ether-wake", etherwake_main, _BB_DIR_USR_BIN, _BB_SUID_NEVER, ether_wake)
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#endif
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#ifdef CONFIG_EXPR
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APPLET(expr, expr_main, _BB_DIR_USR_BIN, _BB_SUID_NEVER)
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#endif
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@ -567,7 +567,7 @@
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#define eject_full_usage \
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"Eject specified DEVICE (or default /dev/cdrom).\n\n" \
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"Options:\n" \
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"\tt" USAGE_EJECT_TRAYCLOSE "\tclose tray"
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"\t-t" USAGE_EJECT_TRAYCLOSE "\tclose tray"
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#define env_trivial_usage \
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"[-iu] [-] [name=value]... [command]"
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@ -578,6 +578,17 @@
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"\t-, -i\tstart with an empty environment\n" \
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"\t-u\tremove variable from the environment"
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#define ether_wake_trivial_usage \
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"[-b] [-i iface] [-p aa:bb:cc:dd[:ee:ff]] MAC"
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#define ether_wake_full_usage \
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"Send a magic packet to wake up sleeping machines.\n" \
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"MAC must be a station address (00:11:22:33:44:55) or\n" \
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" a hostname with a known 'ethers' entry.\n\n" \
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"Options:\n" \
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"\t-b\t\tSend wake-up packet to the broadcast address\n" \
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"\t-i iface\tUse interface ifname instead of the default \"eth0\"\n" \
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"\t-p pass\tAppend the four or six byte password PW to the packet\n"
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#define expr_trivial_usage \
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"EXPRESSION"
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#define expr_full_usage \
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@ -18,6 +18,12 @@ config CONFIG_ARPING
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help
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Ping hosts by ARP packets
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config CONFIG_ETHER_WAKE
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bool "ether-wake"
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default n
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help
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Send a magic packet to wake up sleeping machines.
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config CONFIG_FAKEIDENTD
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bool "fakeidentd"
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default n
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@ -23,35 +23,36 @@ NETWORKING_DIR:=$(top_builddir)/networking/
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endif
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srcdir=$(top_srcdir)/networking
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NETWORKING-y:=
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NETWORKING-$(CONFIG_ARPING) += arping.o
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NETWORKING-$(CONFIG_FAKEIDENTD) += fakeidentd.o
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NETWORKING-$(CONFIG_FTPGET) += ftpgetput.o
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NETWORKING-$(CONFIG_FTPPUT) += ftpgetput.o
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NETWORKING-$(CONFIG_HOSTNAME) += hostname.o
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NETWORKING-$(CONFIG_HTTPD) += httpd.o
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NETWORKING-$(CONFIG_IFCONFIG) += ifconfig.o
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NETWORKING-$(CONFIG_IFUPDOWN) += ifupdown.o
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NETWORKING-$(CONFIG_INETD) += inetd.o
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NETWORKING-$(CONFIG_IP) += ip.o
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NETWORKING-$(CONFIG_IPCALC) += ipcalc.o
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NETWORKING-$(CONFIG_IPADDR) += ipaddr.o
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NETWORKING-$(CONFIG_IPLINK) += iplink.o
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NETWORKING-$(CONFIG_IPROUTE) += iproute.o
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NETWORKING-$(CONFIG_IPTUNNEL) += iptunnel.o
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NETWORKING-$(CONFIG_NAMEIF) += nameif.o
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NETWORKING-$(CONFIG_NC) += nc.o
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NETWORKING-$(CONFIG_NETSTAT) += netstat.o
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NETWORKING-$(CONFIG_NSLOOKUP) += nslookup.o
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NETWORKING-$(CONFIG_PING) += ping.o
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NETWORKING-$(CONFIG_PING6) += ping6.o
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NETWORKING-$(CONFIG_ROUTE) += route.o
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NETWORKING-$(CONFIG_TELNET) += telnet.o
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NETWORKING-$(CONFIG_TELNETD) += telnetd.o
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NETWORKING-$(CONFIG_TFTP) += tftp.o
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NETWORKING-$(CONFIG_TRACEROUTE) += traceroute.o
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NETWORKING-$(CONFIG_VCONFIG) += vconfig.o
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NETWORKING-$(CONFIG_WGET) += wget.o
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NETWORKING-$(CONFIG_ZCIP) += zcip.o
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NETWORKING-$(CONFIG_ARPING) += arping.o
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NETWORKING-$(CONFIG_ETHER_WAKE) += ether-wake.o
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NETWORKING-$(CONFIG_FAKEIDENTD) += fakeidentd.o
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NETWORKING-$(CONFIG_FTPGET) += ftpgetput.o
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NETWORKING-$(CONFIG_FTPPUT) += ftpgetput.o
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NETWORKING-$(CONFIG_HOSTNAME) += hostname.o
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NETWORKING-$(CONFIG_HTTPD) += httpd.o
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NETWORKING-$(CONFIG_IFCONFIG) += ifconfig.o
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NETWORKING-$(CONFIG_IFUPDOWN) += ifupdown.o
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NETWORKING-$(CONFIG_INETD) += inetd.o
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NETWORKING-$(CONFIG_IP) += ip.o
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NETWORKING-$(CONFIG_IPCALC) += ipcalc.o
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NETWORKING-$(CONFIG_IPADDR) += ipaddr.o
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NETWORKING-$(CONFIG_IPLINK) += iplink.o
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NETWORKING-$(CONFIG_IPROUTE) += iproute.o
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NETWORKING-$(CONFIG_IPTUNNEL) += iptunnel.o
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NETWORKING-$(CONFIG_NAMEIF) += nameif.o
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NETWORKING-$(CONFIG_NC) += nc.o
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NETWORKING-$(CONFIG_NETSTAT) += netstat.o
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NETWORKING-$(CONFIG_NSLOOKUP) += nslookup.o
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NETWORKING-$(CONFIG_PING) += ping.o
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NETWORKING-$(CONFIG_PING6) += ping6.o
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NETWORKING-$(CONFIG_ROUTE) += route.o
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NETWORKING-$(CONFIG_TELNET) += telnet.o
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NETWORKING-$(CONFIG_TELNETD) += telnetd.o
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NETWORKING-$(CONFIG_TFTP) += tftp.o
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NETWORKING-$(CONFIG_TRACEROUTE) += traceroute.o
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NETWORKING-$(CONFIG_VCONFIG) += vconfig.o
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NETWORKING-$(CONFIG_WGET) += wget.o
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NETWORKING-$(CONFIG_ZCIP) += zcip.o
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libraries-y+=$(NETWORKING_DIR)$(NETWORKING_AR)
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@ -59,7 +60,7 @@ needcrypt-y:=
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needcrypt-$(CONFIG_FEATURE_HTTPD_AUTH_MD5) := y
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ifeq ($(needcrypt-y),y)
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LIBRARIES += -lcrypt
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LIBRARIES += -lcrypt
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endif
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$(NETWORKING_DIR)$(NETWORKING_AR): $(patsubst %,$(NETWORKING_DIR)%, $(NETWORKING-y))
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@ -67,4 +68,3 @@ $(NETWORKING_DIR)$(NETWORKING_AR): $(patsubst %,$(NETWORKING_DIR)%, $(NETWORKING
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$(NETWORKING_DIR)%.o: $(srcdir)/%.c
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$(CC) $(CFLAGS) $(EXTRA_CFLAGS) -c -o $@ $<
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300
networking/ether-wake.c
Normal file
300
networking/ether-wake.c
Normal file
@ -0,0 +1,300 @@
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/*
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* ether-wake.c - Send a magic packet to wake up sleeping machines.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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*
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* Author: Donald Becker, http://www.scyld.com/"; http://www.scyld.com/wakeonlan.html
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* Busybox port: Christian Volkmann <haveaniceday@online.de>
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* Used version of ether-wake.c: v1.09 11/12/2003 Donald Becker, http://www.scyld.com/";
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*/
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/* full usage according Donald Becker
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* usage: ether-wake [-i <ifname>] [-p aa:bb:cc:dd[:ee:ff]] 00:11:22:33:44:55\n"
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*
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* This program generates and transmits a Wake-On-LAN (WOL)\n"
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* \"Magic Packet\", used for restarting machines that have been\n"
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* soft-powered-down (ACPI D3-warm state).\n"
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* It currently generates the standard AMD Magic Packet format, with\n"
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* an optional password appended.\n"
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*
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* The single required parameter is the Ethernet MAC (station) address\n"
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* of the machine to wake or a host ID with known NSS 'ethers' entry.\n"
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* The MAC address may be found with the 'arp' program while the target\n"
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* machine is awake.\n"
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*
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* Options:\n"
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* -b Send wake-up packet to the broadcast address.\n"
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* -D Increase the debug level.\n"
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* -i ifname Use interface IFNAME instead of the default 'eth0'.\n"
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* -p <pw> Append the four or six byte password PW to the packet.\n"
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* A password is only required for a few adapter types.\n"
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* The password may be specified in ethernet hex format\n"
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* or dotted decimal (Internet address)\n"
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* -p 00:22:44:66:88:aa\n"
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* -p 192.168.1.1\n";
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*
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*
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* This program generates and transmits a Wake-On-LAN (WOL) "Magic Packet",
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* used for restarting machines that have been soft-powered-down
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* (ACPI D3-warm state). It currently generates the standard AMD Magic Packet
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* format, with an optional password appended.
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*
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* This software may be used and distributed according to the terms
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* of the GNU Public License, incorporated herein by reference.
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* Contact the author for use under other terms.
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*
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* This source file was originally part of the network tricks package, and
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* is now distributed to support the Scyld Beowulf system.
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* Copyright 1999-2003 Donald Becker and Scyld Computing Corporation.
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*
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* The author may be reached as becker@scyld, or C/O
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* Scyld Computing Corporation
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* 914 Bay Ridge Road, Suite 220
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* Annapolis MD 21403
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*
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* Notes:
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* On some systems dropping root capability allows the process to be
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* dumped, traced or debugged.
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* If someone traces this program, they get control of a raw socket.
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* Linux handles this safely, but beware when porting this program.
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*
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* An alternative to needing 'root' is using a UDP broadcast socket, however
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* doing so only works with adapters configured for unicast+broadcast Rx
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* filter. That configuration consumes more power.
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*/
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#include <unistd.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <errno.h>
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#include <ctype.h>
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#include <string.h>
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#include <sys/socket.h>
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#include <sys/types.h>
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#include <sys/ioctl.h>
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#include <features.h>
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#include <netpacket/packet.h>
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#include <net/ethernet.h>
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#include <netdb.h>
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#include <netinet/ether.h>
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#ifdef __linux__
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#include <linux/if.h>
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#endif
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#include "busybox.h"
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/* Note: PF_INET, SOCK_DGRAM, IPPROTO_UDP would allow SIOCGIFHWADDR to
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* work as non-root, but we need SOCK_PACKET to specify the Ethernet
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* destination address.
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*/
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#ifdef PF_PACKET
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# define whereto_t sockaddr_ll
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# define make_socket() socket(PF_PACKET, SOCK_RAW, 0)
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#else
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# define whereto_t sockaddr
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# define make_socket() socket(AF_INET, SOCK_PACKET, SOCK_PACKET)
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#endif
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#ifdef DEBUG
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# define bb_debug_msg(fmt, args...) fprintf(stderr, fmt, ## args)
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void bb_debug_dump_packet(unsigned char *outpack, int pktsize)
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{
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int i;
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printf("packet dump:\n");
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for (i = 0; i < pktsize; ++i) {
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printf("%2.2x ", outpack[i]);
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if (i % 20 == 19) printf("\n");
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}
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printf("\n\n");
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}
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#else
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# define bb_debug_msg(fmt, args...)
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# define bb_debug_dump_packet(outpack, pktsize)
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#endif
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static inline void get_dest_addr(const char *arg, struct ether_addr *eaddr);
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static inline int get_fill(unsigned char *pkt, struct ether_addr *eaddr, int broadcast);
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static inline int get_wol_pw(const char *ethoptarg, unsigned char *wol_passwd);
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int etherwake_main(int argc, char *argv[])
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{
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char *ifname = "eth0", *pass = NULL;
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unsigned long flags;
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unsigned char wol_passwd[6];
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int wol_passwd_sz = 0;
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int s; /* Raw socket */
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int pktsize;
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unsigned char outpack[1000];
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struct ether_addr eaddr;
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struct whereto_t whereto; /* who to wake up */
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/* handle misc user options */
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flags = bb_getopt_ulflags(argc, argv, "bi:p:", &ifname, &pass);
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if (optind == argc)
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bb_show_usage();
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if (pass)
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wol_passwd_sz = get_wol_pw(pass, wol_passwd);
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/* create the raw socket */
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s = make_socket();
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if (s < 0)
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bb_perror_msg_and_die(bb_msg_can_not_create_raw_socket);
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/* now that we have a raw socket we can drop root */
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setuid(getuid());
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/* look up the dest mac address */
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get_dest_addr(argv[optind], &eaddr);
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/* fill out the header of the packet */
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pktsize = get_fill(outpack, &eaddr, flags /*& 1 [OPT_BROADCAST]*/);
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bb_debug_dump_packet(outpack, pktsize);
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/* Fill in the source address, if possible. */
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#ifdef __linux__
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{
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struct ifreq if_hwaddr;
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strcpy(if_hwaddr.ifr_name, ifname);
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if (ioctl(s, SIOCGIFHWADDR, &if_hwaddr) < 0)
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bb_perror_msg_and_die("SIOCGIFHWADDR on %s failed", ifname);
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memcpy(outpack+6, if_hwaddr.ifr_hwaddr.sa_data, 6);
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# ifdef DEBUG
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{
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unsigned char *hwaddr = if_hwaddr.ifr_hwaddr.sa_data;
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printf("The hardware address (SIOCGIFHWADDR) of %s is type %d "
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"%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x\n\n", ifname,
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if_hwaddr.ifr_hwaddr.sa_family, hwaddr[0], hwaddr[1],
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hwaddr[2], hwaddr[3], hwaddr[4], hwaddr[5]);
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}
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# endif
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}
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#endif /* __linux__ */
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bb_debug_dump_packet(outpack, pktsize);
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/* append the password if specified */
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if (wol_passwd_sz > 0) {
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memcpy(outpack+pktsize, wol_passwd, wol_passwd_sz);
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pktsize += wol_passwd_sz;
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}
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bb_debug_dump_packet(outpack, pktsize);
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/* This is necessary for broadcasts to work */
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if (flags /*& 1 [OPT_BROADCAST]*/) {
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int one = 1;
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if (setsockopt(s, SOL_SOCKET, SO_BROADCAST, (void *)&one, sizeof(one)) < 0)
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bb_perror_msg("SO_BROADCAST");
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}
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#if defined(PF_PACKET)
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{
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struct ifreq ifr;
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strncpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
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if (ioctl(s, SIOCGIFINDEX, &ifr) == -1)
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bb_perror_msg_and_die("SIOCGIFINDEX");
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memset(&whereto, 0, sizeof(whereto));
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whereto.sll_family = AF_PACKET;
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whereto.sll_ifindex = ifr.ifr_ifindex;
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/* The manual page incorrectly claims the address must be filled.
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We do so because the code may change to match the docs. */
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whereto.sll_halen = ETH_ALEN;
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memcpy(whereto.sll_addr, outpack, ETH_ALEN);
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}
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#else
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whereto.sa_family = 0;
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strcpy(whereto.sa_data, ifname);
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#endif
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if (sendto(s, outpack, pktsize, 0, (struct sockaddr *)&whereto, sizeof(whereto)) < 0)
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bb_perror_msg(bb_msg_write_error);
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close(s);
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return EXIT_SUCCESS;
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}
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/* Convert the host ID string to a MAC address.
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* The string may be a:
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* Host name
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* IP address string
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* MAC address string
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*/
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static inline void get_dest_addr(const char *hostid, struct ether_addr *eaddr)
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{
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struct ether_addr *eap;
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eap = ether_aton(hostid);
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if (eap) {
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*eaddr = *eap;
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bb_debug_msg("The target station address is %s\n\n", ether_ntoa(eaddr));
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} else if (ether_hostton(hostid, eaddr) == 0) {
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bb_debug_msg("Station address for hostname %s is %s\n\n", hostid, ether_ntoa(eaddr));
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} else
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bb_show_usage();
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}
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static inline int get_fill(unsigned char *pkt, struct ether_addr *eaddr, int broadcast)
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{
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int offset, i;
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unsigned char *station_addr = eaddr->ether_addr_octet;
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if (broadcast)
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memset(pkt+0, 0xff, 6);
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else
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memcpy(pkt, station_addr, 6);
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memcpy(pkt+6, station_addr, 6);
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pkt[12] = 0x08; /* Or 0x0806 for ARP, 0x8035 for RARP */
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pkt[13] = 0x42;
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offset = 14;
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memset(pkt+offset, 0xff, 6);
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offset += 6;
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for (i = 0; i < 16; ++i) {
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memcpy(pkt+offset, station_addr, 6);
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offset += 6;
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}
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return offset;
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}
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static inline int get_wol_pw(const char *ethoptarg, unsigned char *wol_passwd)
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{
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int passwd[6];
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int byte_cnt, i;
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/* handle MAC format */
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byte_cnt = sscanf(ethoptarg, "%2x:%2x:%2x:%2x:%2x:%2x",
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&passwd[0], &passwd[1], &passwd[2],
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&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;
|
||||
}
|
||||
Loading…
Reference in New Issue
Block a user