root / snf-cyclades-app / synnefo / db / utils.py @ 35f2fc07
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1 | 3165f027 | Christos Stavrakakis | # Copyright 2012 GRNET S.A. All rights reserved.
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2 | 3165f027 | Christos Stavrakakis | #
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3 | 3165f027 | Christos Stavrakakis | # Redistribution and use in source and binary forms, with or without
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4 | 3165f027 | Christos Stavrakakis | # modification, are permitted provided that the following conditions
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5 | 3165f027 | Christos Stavrakakis | # are met:
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6 | 3165f027 | Christos Stavrakakis | #
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7 | 3165f027 | Christos Stavrakakis | # 1. Redistributions of source code must retain the above copyright
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8 | 3165f027 | Christos Stavrakakis | # notice, this list of conditions and the following disclaimer.
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9 | 3165f027 | Christos Stavrakakis | #
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10 | 3165f027 | Christos Stavrakakis | # 2. Redistributions in binary form must reproduce the above copyright
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11 | 3165f027 | Christos Stavrakakis | # notice, this list of conditions and the following disclaimer in the
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12 | 3165f027 | Christos Stavrakakis | # documentation and/or other materials provided with the distribution.
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13 | 3165f027 | Christos Stavrakakis | #
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14 | 3165f027 | Christos Stavrakakis | # THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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15 | 3165f027 | Christos Stavrakakis | # ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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16 | 3165f027 | Christos Stavrakakis | # IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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17 | 3165f027 | Christos Stavrakakis | # ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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18 | 3165f027 | Christos Stavrakakis | # FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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19 | 3165f027 | Christos Stavrakakis | # DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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20 | 3165f027 | Christos Stavrakakis | # OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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21 | 3165f027 | Christos Stavrakakis | # HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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22 | 3165f027 | Christos Stavrakakis | # LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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23 | 3165f027 | Christos Stavrakakis | # OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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24 | 3165f027 | Christos Stavrakakis | # SUCH DAMAGE.
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25 | 3165f027 | Christos Stavrakakis | #
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26 | 3165f027 | Christos Stavrakakis | # The views and conclusions contained in the software and documentation are
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27 | 3165f027 | Christos Stavrakakis | # those of the authors and should not be interpreted as representing official
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28 | 3165f027 | Christos Stavrakakis | # policies, either expressed or implied, of GRNET S.A.
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29 | 3165f027 | Christos Stavrakakis | |
30 | 3165f027 | Christos Stavrakakis | import re |
31 | 3165f027 | Christos Stavrakakis | _VALID_MAC_RE = re.compile("^([0-9a-f]{2}:){5}[0-9a-f]{2}$", re.I)
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32 | 3165f027 | Christos Stavrakakis | |
33 | 3165f027 | Christos Stavrakakis | |
34 | 3165f027 | Christos Stavrakakis | def validate_mac(mac): |
35 | 3165f027 | Christos Stavrakakis | """Validate a MAC address and return normalized form."""
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36 | 3165f027 | Christos Stavrakakis | |
37 | 3165f027 | Christos Stavrakakis | if not _VALID_MAC_RE.match(mac): |
38 | 3165f027 | Christos Stavrakakis | raise InvalidMacAddress("Invalid MAC address '%s'" % mac) |
39 | 3165f027 | Christos Stavrakakis | |
40 | 3165f027 | Christos Stavrakakis | return mac.lower()
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41 | 3165f027 | Christos Stavrakakis | |
42 | 3165f027 | Christos Stavrakakis | |
43 | 3165f027 | Christos Stavrakakis | class InvalidMacAddress(Exception): |
44 | 3165f027 | Christos Stavrakakis | pass |