# Copyright (c) 2015, Job Snijders # Copyright (c) 2015, NORDUnet A/S # # This file is part of IRR Explorer # # Redistribution and use in source and binary forms, with or without # modification, are permitted provided that the following conditions are met: # # 1. Redistributions of source code must retain the above copyright notice, # this list of conditions and the following disclaimer. # # 2. Redistributions in binary form must reproduce the above copyright notice, # this list of conditions and the following disclaimer in the documentation # and/or other materials provided with the distribution. # # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" # AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE # IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE # ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE # LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR # CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF # SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS # INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN # CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) # ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE # POSSIBILITY OF SUCH DAMAGE. """ Utility stuff. Right now it just classifies search strings as the right object. """ import ipaddr class SearchObject(object): def __init__(self, value): self.value = value class Prefix(SearchObject): pass # also used for ip addresses class ASNumber(SearchObject): pass class ASMacro(SearchObject): pass def classifySearchString(data): data = data.strip() asn = None try: asn = int(data) except ValueError: pass if asn: if asn < 1: raise ValueError('Invalid as number (negative or zero)') return ASNumber(asn) if data.upper().startswith('AS-'): return ASMacro(data.upper()) # as macros are always uppcase if data.upper().startswith('AS'): try: return ASNumber(int(data[2:])) except ValueError: return ASMacro(data) try: ipaddr.IPNetwork(data) return Prefix(data) except ValueError: pass raise ValueError('Cannot classify %s' % data)