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Diffstat (limited to 'contrib/wakeonlan/wake.pl')
| -rw-r--r-- | contrib/wakeonlan/wake.pl | 116 |
1 files changed, 116 insertions, 0 deletions
diff --git a/contrib/wakeonlan/wake.pl b/contrib/wakeonlan/wake.pl new file mode 100644 index 00000000..d9be35b7 --- /dev/null +++ b/contrib/wakeonlan/wake.pl @@ -0,0 +1,116 @@ +#!/usr/bin/perl -w +# +# If called as wake.pl -f file it reads lines of the form +# +# aa:bb:cc:dd:ee;ff 12.34.56.78 or +# aa:bb:cc:dd:ee:ff foo.bar.com +# aa:bb:cc:dd:ee:ff +# +# which are MAC addresses and hostnames of NICs to send a wakeup packet. +# In the first two cases, unicast is used (and root permission may be +# required if the ARP cache needs to be injected with a mapping). +# In the third case, broadcast is used, and anybody can run the command. +# Comments in the file start with #. +# +# Or MAC addresses can be specified on the command line +# +# wake.pl aa.bb.cc.dd.ee.ff +# +# Or both can be used: +# +# wake.pl -f addresses.cfg 11:22:33:44:55:66 +# +# This program may have to be run with superuser privilege because it +# may need to inject an ARP entry into the cache. +# Be careful, you could corrupt valid entries if those NICs are +# already active. +# +# Perl version by ken_yap@users.sourceforge.net after DOS/Windows C version posted by +# Steve_Marfisi@3com.com on the Netboot mailing list +# Released under GNU Public License, 2000-01-08 +# Added switch -q for quiet mode, changed Getopt usage to work with older versions, +# added switch -u for unicast mode, now default is always broadcast mode, +# added switch -s for seach pattern so you could filter entries from file. +# Guenter.Knauf@dialup.soco.de, 2000-10-14 +# +use Getopt::Std; +use Socket; + +getopts('quf:s:'); +if (defined($opt_f)) { + unless (open(F, $opt_f)) { + print STDERR "open: $opt_f: $!\n"; + } else { + while (<F>) { + next if /^\s*#/; # skip comments + ($mac, $ip) = split; + next if !defined($mac) or $mac eq ''; + next if defined($opt_s) and (!/$opt_s/); + if (!defined($ip) or $ip eq '' or !$opt_u) { + &send_broadcast_packet($mac); + } else { + &send_unicast_packet($mac, $ip); + } + } + close(F); + } +} +while (@ARGV) { + send_broadcast_packet(shift(@ARGV)); +} + +sub send_broadcast_packet { + ($mac) = @_; + + if ($mac !~ /^[\da-f]{2}:[\da-f]{2}:[\da-f]{2}:[\da-f]{2}:[\da-f]{2}:[\da-f]{2}$/i) { + print STDERR "Malformed MAC address $mac\n"; + return; + } + # Remove colons + $mac =~ tr/://d; + # Magic packet is 6 bytes of FF followed by the MAC address 16 times + $magic = ("\xff" x 6) . (pack('H12', $mac) x 16); + # Create socket + socket(S, PF_INET, SOCK_DGRAM, getprotobyname('udp')) + or die "socket: $!\n"; + # Enable broadcast + setsockopt(S, SOL_SOCKET, SO_BROADCAST, 1) + or die "setsockopt: $!\n"; + # Send the wakeup packet + if (!$opt_q) { + print "Sending wakeup packet to MAC address $mac"; + print " ($ip)" if (defined($ip)); + print "\n"; + } + defined(send(S, $magic, 0, sockaddr_in(0x2fff, INADDR_BROADCAST))) + or print STDERR "send: $!\n"; + close(S); +} + +sub send_unicast_packet { + ($mac, $ip) = @_; + + if (!defined($iaddr = inet_aton($ip))) { + print STDERR "Cannot resolve $ip\n"; + return; + } + if ($mac !~ /^[\da-f]{2}:[\da-f]{2}:[\da-f]{2}:[\da-f]{2}:[\da-f]{2}:[\da-f]{2}$/i) { + print STDERR "Malformed MAC address $mac\n"; + return; + } + # Inject entry into ARP table, in case it's not there already + system("arp -s $ip $mac") == 0 + or print STDERR "Warning: arp command failed, you need to be root\n"; + # Remove colons + $mac =~ tr/://d; + # Magic packet is 6 bytes of FF followed by the MAC address 16 times + $magic = ("\xff" x 6) . (pack('H12', $mac) x 16); + # Create socket + socket(S, PF_INET, SOCK_DGRAM, getprotobyname('udp')) + or die "socket: $!\n"; + # Send the wakeup packet + print "Sending wakeup packet to $ip at MAC address $mac\n" if (!$opt_q); + defined(send(S, $magic, 0, sockaddr_in(0x2fff, $iaddr))) + or print STDERR "send: $!\n"; + close(S); +} |