Last change
on this file since 4047 was 3130, checked in by lodewijk, 20 years ago |
tooltje om een vrije interlink te zoeken
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File size:
872 bytes
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1 | # zoek de eerste vrije (== niet in een wleiden.conf gedefinieerde) /30
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2 | # lvoge@cs.vu.nl
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3 | import popen2
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4 | import re
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5 |
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6 | ipre = re.compile("^IP=(172\.16\.[0-9]+\.[0-9]+)/30 *")
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7 |
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8 | def parseaddr(s):
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9 | f = s.split('.')
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10 | return (long(f[0]) << 24L) + \
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11 | (long(f[1]) << 16L) + \
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12 | (long(f[2]) << 8L) + \
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13 | long(f[3])
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14 |
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15 | def showaddr(a):
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16 | return "%d.%d.%d.%d" % ((a >> 24) & 0xff, (a >> 16) & 0xff, (a >> 8) & 0xff, a & 0xff)
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17 |
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18 | bezet = {}
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19 |
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20 | (cout, cin) = popen2.popen2("cat */wleiden.conf | grep ^IP | grep 172.16\\\\..*\/30")
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21 | cin.close()
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22 | for l in cout.readlines():
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23 | l = l[:-1]
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24 | match = ipre.match(l)
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25 | if match == None:
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26 | print "'" + l + "'"
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27 | addr = parseaddr(match.group(1))
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28 | addr = addr & 0xfffffffcL
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29 | bezet[addr] = 1
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30 |
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31 | i = 0xffffffffL
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32 | for k in bezet.keys():
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33 | if k < i:
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34 | i = k
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35 |
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36 | while bezet.has_key(i):
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37 | i = i + 4
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38 |
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39 | print "%s/30: %s en %s\n" % (showaddr(i), showaddr(i + 1), showaddr(i + 2))
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