しばらく前に、[Google の助けを借りて] ネットワーク内のコンピューターの電源を入れるための小さな WOL スクリプトを書きました。スクリプトは次のとおりです。
exec /usr/bin/python -x "$0" "$@"
#
node_lst = [
'srv1 0a:1b:8c:0d:2e:7f',
'srv2 0A-0B-4C-8D-CE:3F',
]
#
import os,sys,string,commands
import struct, socket
import re,random
retval = 0
mac_addr = "mac_addr.txt"
X = '([a-zA-Z0-9]{2}[:|\-|.]?){5}[a-zA-Z0-9]{2}'
S = re.compile(r'\s+')
mmap = {}
## First argument 'None' in str.translate is new in 2.6.
## Previously, it was a string of 256 characters
if sys.version_info < (2, 6):
f1_arg = ''.join(chr(i) for i in xrange(256))
else:
f1_arg = None
## broadcast address
sysOS = "uname -s"
BSD = "ifconfig | grep -w broadcast | cut -d\ -f 6"
LNX = "ip -o addr show | grep -w inet | grep -e eth | cut -d\ -f 9"
#
if commands.getoutput(sysOS) == "Linux":
bCast = commands.getoutput(LNX)
elif commands.getoutput(sysOS) == "Darwin":
bCast = commands.getoutput(BSD)
else:
print "System not supported!!"
sys_exit()
def WakeOnLan(mac_address):
## Building the Wake-On-LAN "Magic Packet"...
## Pad the synchronization stream.
data = ''.join(['FFFFFFFFFFFF', mac_address * 20])
msg = ''
## Split up the hex values and pack.
for i in range(0, len(data), 2):
msg = ''.join([msg, struct.pack('B', int(data[i: i + 2], 16))])
## ...and send it to the broadcast address using UDP
s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
s.setsockopt(socket.SOL_SOCKET, socket.SO_BROADCAST, 1)
s.sendto(msg, (bCast, 9))
s.close()
def sys_exit():
sys.stdout.flush()
sys.exit(1)
## check if hostname is provided
if len(sys.argv) != 2:
print "Usage: %s <hostname>" % sys.argv[0]
sys_exit()
for i in node_lst:
# strip off everything from first "#" [if] found
i = i.split('#',1)[0]
if not re.search(X, i):
continue
h = S.split(i,1)[0] ## host name
m = S.split(i,1)[-1] ## MAC address
mmap[h] = m.strip('\t|" "')
for j, k in mmap.iteritems():
if sys.argv[1] == j:
if not re.search(X.replace('zA-Z','fA-F'), k):
print "Invalid MAC address [",k,"]; nothing to do!!"
sys_exit()
else:
WakeOnLan(k.translate(f1_arg,':.-'))
print "WOL request has been sent to %s [%s]" % (j,k)
break
else:
print "Host [%s] doesn't exist!!" % sys.argv[1]
sys_exit()
これは、ホーム ネットワーク (または LAN) 内から問題なく動作します。スクリプトを変更して、LAN 外でも機能するようにするにはどうすればよいですか? アイデアや提案はありますか?乾杯!!