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Last change
on this file since 7969 was 7936, checked in by lodewijk, 16 years ago |
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herschrijf het zoeken naar IP adressen. ipv de uitvoer van grep pakken, ga
zelf over */wleiden.conf's heen. hou variabelen bij, en handel vervolgens
references naar die variabelen af als er een "IP=" voorbij komt.
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Property svn:eol-style
set to
native
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Property svn:executable
set to
*
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File size:
1.5 KB
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| 1 | #!/usr/bin/env python
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| 2 | # zoek de eerste vrije (== niet in een wleiden.conf gedefinieerde) interlink
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| 3 | # range
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| 4 | # lodewijk@wirelessleiden.nl
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| 5 | import popen2
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| 6 | import re
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| 7 | import sys
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| 8 | import glob
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| 9 |
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| 10 | size = 30
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| 11 | if len(sys.argv) < 2:
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| 12 | print "Gebruik: python getrange.py <interlink|subnet> <size>"
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| 13 | print "dus voor een /28 interlink is het 'python getrange.py interlink 28'"
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| 14 | print "en voor een /25 subnet is het 'python getrange.py subnet 25'"
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| 15 | interlink = sys.argv[1] == 'interlink'
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| 16 | size = int(sys.argv[2])
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| 17 | numaddrs = 1 << (32 - size)
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| 18 |
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| 19 | substre = re.compile("^(\$[a-zA-Z][^ =]*) ?= ?'([^']*)';")
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| 20 |
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| 21 | def parseaddr(s):
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| 22 | f = s.split('.')
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| 23 | return (long(f[0]) << 24L) + \
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| 24 | (long(f[1]) << 16L) + \
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| 25 | (long(f[2]) << 8L) + \
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| 26 | long(f[3])
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| 27 |
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| 28 | def showaddr(a):
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| 29 | return "%d.%d.%d.%d" % ((a >> 24) & 0xff, (a >> 16) & 0xff, (a >> 8) & 0xff, a & 0xff)
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| 30 |
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| 31 | bezet = {}
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| 32 |
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| 33 | for fname in glob.glob("*/wleiden.conf"):
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| 34 | substs = {}
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| 35 | for l in open(fname):
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| 36 | l = l[:-1]
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| 37 | match = substre.match(l)
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| 38 | if match != None:
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| 39 | substs[match.group(1)] = match.group(2)
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| 40 | if l.startswith("IP="):
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| 41 | right = l[3:]
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| 42 | if '/' not in right:
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| 43 | addr = right
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| 44 | mask = 32
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| 45 | else:
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| 46 | addr, mask = right.split('/')
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| 47 | if addr in substs:
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| 48 | addr = substs[addr]
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| 49 | addr = parseaddr(addr)
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| 50 | mask = int(mask)
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| 51 | addr = addr & ~((1 << (32 - mask)) - 1)
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| 52 | bezet[addr] = 1
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| 53 |
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| 54 | i = 0xffffffffL
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| 55 | for k in bezet.keys():
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| 56 | if k < i:
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| 57 | i = k
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| 58 |
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| 59 |
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| 60 | i = 0xac100300
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| 61 | if not interlink:
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| 62 | i = 0xac110000
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| 63 | while bezet.has_key(i):
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| 64 | i = i + numaddrs
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| 65 |
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| 66 | print "%s/%d:" % (showaddr(i), size),
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| 67 | print " en ".join([showaddr(i) for i in range(i + 1, i + numaddrs - 1)])
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