diff options
author | Rob Austein <sra@hactrn.net> | 2014-04-05 22:42:12 +0000 |
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committer | Rob Austein <sra@hactrn.net> | 2014-04-05 22:42:12 +0000 |
commit | fe0bf509f528dbdc50c7182f81057c6a4e15e4bd (patch) | |
tree | 07c9a923d4a0ccdfea11c49cd284f6d5757c5eda /scripts/expand-roa-prefixes.py | |
parent | aa28ef54c271fbe4d52860ff8cf13cab19e2207c (diff) |
Source tree reorg, phase 1. Almost everything moved, no file contents changed.
svn path=/branches/tk685/; revision=5757
Diffstat (limited to 'scripts/expand-roa-prefixes.py')
-rw-r--r-- | scripts/expand-roa-prefixes.py | 79 |
1 files changed, 0 insertions, 79 deletions
diff --git a/scripts/expand-roa-prefixes.py b/scripts/expand-roa-prefixes.py deleted file mode 100644 index ae34ea0a..00000000 --- a/scripts/expand-roa-prefixes.py +++ /dev/null @@ -1,79 +0,0 @@ -# $Id$ -# -# Copyright (C) 2011 Internet Systems Consortium ("ISC") -# -# Permission to use, copy, modify, and distribute this software for any -# purpose with or without fee is hereby granted, provided that the above -# copyright notice and this permission notice appear in all copies. -# -# THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH -# REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY -# AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT, -# INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM -# LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE -# OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR -# PERFORMANCE OF THIS SOFTWARE. - -""" -I got tired of trying to explain in English how the maxLength macro -hack works in ROAs, so this is an attempt to explain it as code. - -Given one or more ROA prefix sets on the command line, this script -prints out the expansion as a list of prefixes. -""" - -import sys -import rpki.resource_set -import rpki.ipaddrs - -class NotAPrefix(Exception): - """ - Address is not a proper prefix. - """ - -class address_range(object): - """ - Iterator for rpki.ipaddrs address objects. - """ - - def __init__(self, start, stop, step): - self.addr = start - self.stop = stop - self.step = step - self.type = type(start) - - def __iter__(self): - while self.addr < self.stop: - yield self.addr - self.addr = self.type(self.addr + self.step) - -def main(argv): - - prefix_sets = [] - for arg in argv: - if ":" in arg: - prefix_sets.extend(rpki.resource_set.roa_prefix_set_ipv6(arg)) - else: - prefix_sets.extend(rpki.resource_set.roa_prefix_set_ipv4(arg)) - - for prefix_set in prefix_sets: - sys.stdout.write("%s expands to:\n" % prefix_set) - - prefix_type = prefix_set.range_type.datum_type - prefix_min = prefix_set.prefix - prefix_max = prefix_set.prefix + (1L << (prefix_type.bits - prefix_set.prefixlen)) - - for prefixlen in xrange(prefix_set.prefixlen, prefix_set.max_prefixlen + 1): - - step = (1L << (prefix_type.bits - prefixlen)) - mask = step - 1 - - for addr in address_range(prefix_min, prefix_max, step): - if (addr & mask) != 0: - raise NotAPrefix, "%s is not a /%d prefix" % (addr, prefixlen) - sys.stdout.write(" %s/%d\n" % (addr, prefixlen)) - - sys.stdout.write("\n") - -if __name__ == "__main__": - main(sys.argv[1:] if len(sys.argv) > 1 else ["18.0.0.0/8-24"]) |