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annotate roundup/token_r.py @ 7968:d7e79f8eb943

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issue2551350 - Python changes for 3.12 with roundup 2.3.0 mailer.py Fix due to change in smtplib.SMTP.starttls() signature. As of 3.3 it can use an optional ssl context argument for certificates/keys. In 3.12 it dropped legacy support for specifing cert/key files as arguments and requires a context. I modified Andrew's original patch to initialize SSLContext with ssl.PROTOCOL_TLS_CLIENT. If there is a cert file specified, enable check_hostname - verify that the cert supplied by the server matches the hostname we supplied. If there is no cert file call load_default_certs() Also opened issue2551351 to look into more SMTP ssmtp tightening. We also should have an option in Roundup to use TLS/SSL (smtps) without using starttls. Note that this code is untested by the test suite due to the need to setup an SMTP server with STARTTLS support. issue2551351 has some notes on this.
author John Rouillard <rouilj@ieee.org>
date Wed, 15 May 2024 00:08:05 -0400
parents 9a74dfeb8620
children
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1 #
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2 # Copyright (c) 2001 Richard Jones, richard@bofh.asn.au.
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3 # This module is free software, and you may redistribute it and/or modify
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4 # under the same terms as Python, so long as this copyright message and
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5 # disclaimer are retained in their original form.
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6 #
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7 # This module is distributed in the hope that it will be useful,
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8 # but WITHOUT ANY WARRANTY; without even the implied warranty of
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9 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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10 #
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11
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12 """This module provides the tokeniser used by roundup-admin.
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13 """
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14 __docformat__ = 'restructuredtext'
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15
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16
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17 def token_split(s, whitespace=' \r\n\t', quotes='\'"',
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18 escaped={'r': '\r', 'n': '\n', 't': '\t'}):
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19 r'''Split the string up into tokens. An occurence of a ``'`` or ``"`` in
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20 the input will cause the splitter to ignore whitespace until a matching
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21 quote char is found. Embedded non-matching quote chars are also skipped.
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22
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23 Whitespace and quoting characters may be escaped using a backslash.
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24 ``\r``, ``\n`` and ``\t`` are converted to carriage-return, newline and
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25 tab. All other backslashed characters are left as-is.
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26
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27 Valid examples::
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28
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29 hello world (2 tokens: hello, world)
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30 "hello world" (1 token: hello world)
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31 "Roch'e" Compaan (2 tokens: Roch'e Compaan)
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32 Roch\'e Compaan (2 tokens: Roch'e Compaan)
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33 address="1 2 3" (1 token: address=1 2 3)
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34 \\ (1 token: \)
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35 \n (1 token: a newline)
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36 \o (1 token: \o)
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37
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38 Invalid examples::
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39
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40 "hello world (no matching quote)
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41 Roch'e Compaan (no matching quote)
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42 '''
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43 l = []
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44 pos = 0
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45 NEWTOKEN = 'newtoken'
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46 TOKEN = 'token'
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47 QUOTE = 'quote'
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48 ESCAPE = 'escape'
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49 quotechar = ''
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50 state = NEWTOKEN
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51 oldstate = '' # one-level state stack ;)
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52 length = len(s)
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53 token = ''
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54 while 1:
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55 # end of string, finish off the current token
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56 if pos == length:
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57 if state == QUOTE: raise ValueError # noqa: E701
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58 elif state == TOKEN: l.append(token) # noqa: E701
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59 break
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60 c = s[pos]
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61 if state == NEWTOKEN:
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62 # looking for a new token
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63 if c in quotes:
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64 # quoted token
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65 state = QUOTE
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66 quotechar = c
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67 pos = pos + 1
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68 continue
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69 elif c in whitespace:
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70 # skip whitespace
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71 pos = pos + 1
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72 continue
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73 elif c == '\\':
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74 pos = pos + 1
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75 oldstate = TOKEN
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76 state = ESCAPE
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77 continue
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78 # otherwise we have a token
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79 state = TOKEN
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80 elif state == TOKEN:
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81 if c in whitespace:
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82 # have a token, and have just found a whitespace terminator
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83 l.append(token)
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84 pos = pos + 1
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85 state = NEWTOKEN
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86 token = ''
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87 continue
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88 elif c in quotes:
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89 # have a token, just found embedded quotes
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90 state = QUOTE
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91 quotechar = c
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92 pos = pos + 1
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93 continue
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94 elif c == '\\':
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95 pos = pos + 1
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96 oldstate = state
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97 state = ESCAPE
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98 continue
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99 elif state == QUOTE and c == '\\':
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100 # in a quoted token and found an escape sequence
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101 pos = pos + 1
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102 oldstate = state
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103 state = ESCAPE
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104 continue
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105 elif state == QUOTE and c == quotechar:
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106 # in a quoted token and found a matching quote char
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107 pos = pos + 1
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108 # now we're looking for whitespace
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109 state = TOKEN
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110 continue
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111 elif state == ESCAPE:
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112 # escaped-char conversions (t, r, n)
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113 # TODO: octal, hexdigit
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114 state = oldstate
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115 if c in escaped:
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116 c = escaped[c]
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117 # just add this char to the token and move along
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118 token = token + c
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119 pos = pos + 1
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120 return l
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121
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122 # vim: set filetype=python ts=4 sw=4 et si
Roundup Issue Tracker: http://roundup-tracker.org/