Mercurial > hg
annotate mercurial/pure/base85.py @ 29268:f200b58497f1
sslutil: reference appropriate config section in messaging
Error messages reference the config section defining the host
fingerprint. Now that we have multiple sections where this config
setting could live, we need to point the user at the appropriate
one.
We default to the new "hostsecurity" section. But we will still
refer them to the "hostfingerprint" section if a value is defined
there.
There are some corner cases where the messaging might be off. e.g.
they could define a SHA-1 fingerprint in both sections. IMO the
messaging needs a massive overhaul. I plan to do this as part
of future refactoring to security settings.
author | Gregory Szorc <gregory.szorc@gmail.com> |
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date | Sat, 28 May 2016 12:58:46 -0700 |
parents | 9007f697e8ef |
children | 01b4d88ccb24 |
rev | line source |
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7701 | 1 # base85.py: pure python base85 codec |
2 # | |
3 # Copyright (C) 2009 Brendan Cully <brendan@kublai.com> | |
4 # | |
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5 # This software may be used and distributed according to the terms of the |
10263 | 6 # GNU General Public License version 2 or any later version. |
7701 | 7 |
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base85: use absolute_import
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8 from __future__ import absolute_import |
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base85: use absolute_import
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9 |
7701 | 10 import struct |
11 | |
12 _b85chars = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ" \ | |
13 "abcdefghijklmnopqrstuvwxyz!#$%&()*+-;<=>?@^_`{|}~" | |
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14 _b85chars2 = [(a + b) for a in _b85chars for b in _b85chars] |
7701 | 15 _b85dec = {} |
16 | |
17 def _mkb85dec(): | |
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18 for i, c in enumerate(_b85chars): |
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19 _b85dec[c] = i |
7701 | 20 |
21 def b85encode(text, pad=False): | |
22 """encode text in base85 format""" | |
23 l = len(text) | |
24 r = l % 4 | |
25 if r: | |
26 text += '\0' * (4 - r) | |
27 longs = len(text) >> 2 | |
28 words = struct.unpack('>%dL' % (longs), text) | |
29 | |
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30 out = ''.join(_b85chars[(word // 52200625) % 85] + |
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31 _b85chars2[(word // 7225) % 7225] + |
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32 _b85chars2[word % 7225] |
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33 for word in words) |
7701 | 34 |
35 if pad: | |
36 return out | |
37 | |
38 # Trim padding | |
39 olen = l % 4 | |
40 if olen: | |
41 olen += 1 | |
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42 olen += l // 4 * 5 |
7701 | 43 return out[:olen] |
44 | |
45 def b85decode(text): | |
46 """decode base85-encoded text""" | |
47 if not _b85dec: | |
48 _mkb85dec() | |
49 | |
50 l = len(text) | |
51 out = [] | |
52 for i in range(0, len(text), 5): | |
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53 chunk = text[i:i + 5] |
7701 | 54 acc = 0 |
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55 for j, c in enumerate(chunk): |
7701 | 56 try: |
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57 acc = acc * 85 + _b85dec[c] |
7701 | 58 except KeyError: |
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59 raise ValueError('bad base85 character at position %d' |
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60 % (i + j)) |
7701 | 61 if acc > 4294967295: |
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62 raise ValueError('Base85 overflow in hunk starting at byte %d' % i) |
7701 | 63 out.append(acc) |
64 | |
65 # Pad final chunk if necessary | |
66 cl = l % 5 | |
67 if cl: | |
68 acc *= 85 ** (5 - cl) | |
69 if cl > 1: | |
70 acc += 0xffffff >> (cl - 2) * 8 | |
71 out[-1] = acc | |
72 | |
73 out = struct.pack('>%dL' % (len(out)), *out) | |
74 if cl: | |
75 out = out[:-(5 - cl)] | |
76 | |
77 return out |