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91 lines
2.2 KiB
91 lines
2.2 KiB
4 years ago
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--- wakeonlan-0.41.orig/wakeonlan
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+++ wakeonlan-0.41/wakeonlan
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@@ -5,6 +5,7 @@
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#########################################################################
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use strict;
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+use Net::hostent;
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use Socket;
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use Getopt::Std;
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use vars qw($VERSION $opt_v $opt_h $opt_i $opt_p $opt_f);
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@@ -44,19 +45,64 @@
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sub wake
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{
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- my $hwaddr = shift;
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+ my $host = shift;
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my $ipaddr = shift || $DEFAULT_IP;
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my $port = shift || $DEFAULT_PORT;
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my ($raddr, $them, $proto);
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- my ($hwaddr_re, $pkt);
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+ my ($hwaddr, $hwaddr_re, $pkt);
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- # Validate hardware address (ethernet address)
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+ # get the hardware address (ethernet address)
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$hwaddr_re = join(':', ('[0-9A-Fa-f]{1,2}') x 6);
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- if ($hwaddr !~ m/^$hwaddr_re$/) {
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- warn "Invalid hardware address: $hwaddr\n";
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- return undef;
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+ if ($host =~ m/^$hwaddr_re$/) {
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+ $hwaddr = $host;
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+ } else {
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+ # $host is not a hardware address, try to resolve it
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+ my $ip_re = join('\.', ('([0-9]|[1-9][0-9]|1[0-9]{2}|2([0-4][0-9]|5[0-5]))') x 4);
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+ my $ip_addr;
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+ if ($host =~ m/^$ip_re$/) {
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+ $ip_addr = $host;
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+ } else {
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+ my $h;
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+ unless ($h = gethost($host)) {
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+ warn "$host is not a hardware address and I could not resolve it as to an IP address.\n";
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+ return undef;
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+ }
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+ $ip_addr = inet_ntoa($h->addr);
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+ }
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+ # look up ip in /etc/ethers
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+ unless (open (ETHERS, '<', '/etc/ethers')) {
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+ warn "$host is not a hardware address and I could not open /etc/ethers.\n";
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+ return undef;
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+ }
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+ while (<ETHERS>) {
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+ if (($_ !~ m/^$/) && ($_ !~ m/^#/)) { # ignore comments
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+ my ($mac, $ip);
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+ ($mac, $ip) = split(' ', $_, 3);
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+ if ($ip =~ m/^$ip_re$/) {
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+ if ($ip eq $ip_addr) {
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+ $hwaddr = $mac;
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+ last;
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+ }
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+ next;
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+ } else {
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+ my $h2;
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+ unless ($h2 = gethost($ip)) {
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+ next;
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+ }
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+ if (inet_ntoa($h2->addr) eq $ip_addr) {
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+ $hwaddr = $mac;
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+ last;
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+ }
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+ }
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+ }
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+ }
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+ close (ETHERS);
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+ unless (defined($hwaddr)) {
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+ warn "Could not find $host in /etc/ethers\n";
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+ return undef;
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+ }
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}
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# Generate magic sequence
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@@ -68,7 +114,7 @@
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# Allocate socket and send packet
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- $raddr = gethostbyname($ipaddr);
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+ $raddr = gethostbyname($ipaddr)->addr;
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$them = pack_sockaddr_in($port, $raddr);
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$proto = getprotobyname('udp');
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