""" Fix problems in asns.csv generated from RIPE's database. RIPE's database contains inconsistancies, overlaps, and format errors that make it impossible to feed the output of ripe-to-csv.awk directly into testbed-rootcert.py without OpenSSL rejecting the resulting root.conf. This script takes a brute force approach to fixing this: it converts all ASNs to range form, runs the resulting file through the unix sort program to put the data into canonical order, then reads it back, merging overlaps, and writing the result in a form acceptable to testbed-rootcert.py. Since we're doing all this anyway, the script also merges adjacent blocks. Ordinarily, it would be dangerous to have the same program act as both the source and sink of a pipeline, particularly for such a large data set, as the chance of deadlock would approach 100%, but in this case we know that the sort program must consume and buffer (somehow) all of its input before writing a single line of output, so a single script can safely act as a filter both before and after sort. $Id$ Copyright (C) 2010 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. """ import sys, subprocess sorter = subprocess.Popen(("sort", "-T.", "-n"), stdin = subprocess.PIPE, stdout = subprocess.PIPE) for line in sys.stdin: handle, asn = line.split() if "-" in asn: range_min, range_max = asn.split("-") else: range_min, range_max = asn, asn sorter.stdin.write("%d %d\n" % (long(range_min), long(range_max))) sorter.stdin.close() prev_min = None prev_max = None def show(): if prev_min and prev_max: sys.stdout.write("x\t%s-%s\n" % (prev_min, prev_max)) for line in sorter.stdout: this_min, this_max = line.split() this_min = long(this_min) this_max = long(this_max) if prev_min and prev_max and prev_max + 1 >= this_min: prev_min = min(prev_min, this_min) prev_max = max(prev_max, this_max) else: show() prev_min = this_min prev_max = this_max show() sorter.stdout.close() sys.exit(sorter.wait()) 0f67777 (plain) (blame) 
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