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annotate roundup/dehtml.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 b68a1d8fd5d9
children 520075b29474
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1
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2 from __future__ import print_function
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3
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4 import sys
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5
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6 from roundup.anypy.strings import u2s, uchr
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7
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8 _pyver = sys.version_info[0]
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11 class dehtml:
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12 def __init__(self, converter):
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13 if converter == "none":
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14 self.html2text = None
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15 return
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17 try:
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18 if converter == "beautifulsoup":
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19 # Not as well tested as dehtml.
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20 from bs4 import BeautifulSoup
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22 def html2text(html):
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23 soup = BeautifulSoup(html, "html.parser")
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25 # kill all script and style elements
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26 for script in soup(["script", "style"]):
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27 script.extract()
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29 return u2s(soup.get_text("\n", strip=True))
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31 self.html2text = html2text
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32 else:
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33 raise ImportError
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34 except ImportError:
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35 # use the fallback below if beautiful soup is not installed.
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36 try:
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37 # Python 3+.
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38 from html.entities import name2codepoint
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39 from html.parser import HTMLParser
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40 except ImportError:
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41 # Python 2.
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42 from htmlentitydefs import name2codepoint
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43 from HTMLParser import HTMLParser
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45 class DumbHTMLParser(HTMLParser):
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46 # class attribute
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47 text = ""
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48
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49 # internal state variable
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50 _skip_data = False
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51 _last_empty = False
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52
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53 def handle_data(self, data):
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54 if self._skip_data: # skip data in script or style block
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55 return
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57 if (data.strip() == ""):
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58 # reduce multiple blank lines to 1
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59 if (self._last_empty):
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60 return
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61 else:
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62 self._last_empty = True
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63 else:
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64 self._last_empty = False
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65
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66 self.text = self.text + data
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67
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68 def handle_starttag(self, tag, attrs): # noqa: ARG002
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69 if (tag == "p"):
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70 self.text = self.text + "\n"
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71 if (tag in ("style", "script")):
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72 self._skip_data = True
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73
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74 def handle_endtag(self, tag):
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75 if (tag in ("style", "script")):
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76 self._skip_data = False
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77
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78 def handle_entityref(self, name):
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79 if self._skip_data:
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80 return
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81 c = uchr(name2codepoint[name])
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82 try:
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83 self.text = self.text + c
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84 except UnicodeEncodeError:
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85 # print a space as a placeholder
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86 self.text = self.text + " "
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87
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88 def html2text(html):
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89 parser = DumbHTMLParser(
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90 convert_charrefs=True) if _pyver == 3 else DumbHTMLParser()
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91 parser.feed(html)
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92 parser.close()
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93 return parser.text
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94
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95 self.html2text = html2text
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98 if __name__ == "__main__":
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99 html = """
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100 <body>
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101 <script>
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102 this must not be in output
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103 </script>
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104 <style>
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105 p {display:block}
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106 </style>
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107 <div class="header"><h1>Roundup</h1>
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108 <div id="searchbox" style="display: none">
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109 <form class="search" action="../search.html" method="get">
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110 <input type="text" name="q" size="18" />
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111 <input type="submit" value="Search" />
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112 <input type="hidden" name="check_keywords" value="yes" />
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113 <input type="hidden" name="area" value="default" />
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114 </form>
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115 </div>
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116 <script type="text/javascript">$('#searchbox').show(0);</script>
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117 </div>
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118 <ul class="current">
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119 <li class="toctree-l1"><a class="reference internal" href="../index.html">Home</a></li>
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120 <li class="toctree-l1"><a class="reference external" href="http://pypi.python.org/pypi/roundup">Download</a></li>
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121 <li class="toctree-l1 current"><a class="reference internal" href="../docs.html">Docs</a><ul class="current">
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122 <li class="toctree-l2"><a class="reference internal" href="features.html">Roundup Features</a></li>
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123 <li class="toctree-l2 current"><a class="current reference internal" href="">Installing Roundup</a></li>
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124 <li class="toctree-l2"><a class="reference internal" href="upgrading.html">Upgrading to newer versions of Roundup</a></li>
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125 <li class="toctree-l2"><a class="reference internal" href="FAQ.html">Roundup FAQ</a></li>
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126 <li class="toctree-l2"><a class="reference internal" href="user_guide.html">User Guide</a></li>
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127 <li class="toctree-l2"><a class="reference internal" href="customizing.html">Customising Roundup</a></li>
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128 <li class="toctree-l2"><a class="reference internal" href="admin_guide.html">Administration Guide</a></li>
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129 </ul>
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130 <div class="section" id="prerequisites">
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131 <h2><a class="toc-backref" href="#id5">Prerequisites</a></h2>
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132 <p>Roundup requires Python 2.5 or newer (but not Python 3) with a functioning
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133 anydbm module. Download the latest version from <a class="reference external" href="http://www.python.org/">http://www.python.org/</a>.
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134 It is highly recommended that users install the latest patch version
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135 of python as these contain many fixes to serious bugs.</p>
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136 <p>Some variants of Linux will need an additional &#8220;python dev&#8221; package
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137 installed for Roundup installation to work. Debian and derivatives, are
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138 known to require this.</p>
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139 <p>If you&#8217;re on windows, you will either need to be using the ActiveState python
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140 distribution (at <a class="reference external" href="http://www.activestate.com/Products/ActivePython/">http://www.activestate.com/Products/ActivePython/</a>), or you&#8217;ll
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141 have to install the win32all package separately (get it from
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142 <a class="reference external" href="http://starship.python.net/crew/mhammond/win32/">http://starship.python.net/crew/mhammond/win32/</a>).</p>
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143 <script>
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144 &lt; HELP &GT;
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145 </script>
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146 </div>
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147 </body>
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148 """
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149
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150 html2text = dehtml("dehtml").html2text
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151 if html2text:
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152 print(html2text(html))
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153
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154 try:
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155 # trap error seen if N_TOKENS not defined when run.
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156 html2text = dehtml("beautifulsoup").html2text
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157 if html2text:
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158 print(html2text(html))
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159 except NameError as e:
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160 print("captured error %s" % e)
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161
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162 html2text = dehtml("none").html2text
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163 if html2text:
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164 print("FAIL: Error, dehtml(none) is returning a function")
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165 else:
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166 print("PASS: dehtml(none) is returning None")
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