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annotate roundup/cgi/engine_zopetal.py @ 8478:ed4ef394d5d6

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doc: initial attempt to document setup of pgp support for email. Used an AI assistant to help write this. Basic gpg commands seem to work, but I have not tested this totally. Docs basically follow the setup used for pgp testing in the test suite. It looks like roundup accepts signed emails as well as encrypted and signed emails. But it does not generate signed emails. Also it looks like there is no PGP support for alternate email addresses. Only primary addresses can do PGP emails.
author John Rouillard <rouilj@ieee.org>
date Sat, 15 Nov 2025 16:59:24 -0500
parents dff6d2edc52f
children
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1 """Templating engine adapter for the legacy TAL implementation ported from
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2 Zope.
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3 """
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4 __docformat__ = 'restructuredtext'
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5
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6 import errno
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7 import mimetypes
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8 import os
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9 import os.path
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10 import stat
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11
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12 from roundup.cgi.templating import StringIO, context, TALLoaderBase
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13 from roundup.cgi.PageTemplates import PageTemplate
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14 from roundup.cgi.PageTemplates.Expressions import getEngine
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15 from roundup.cgi.TAL import TALInterpreter
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16
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17
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18 class Loader(TALLoaderBase):
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19 templates = {}
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20
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21 def __init__(self, template_dir):
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22 self.template_dir = template_dir
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23
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24 def load(self, tplname):
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25 # find the source
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26 try:
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27 src, filename = self._find(tplname)
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28 except TypeError as e:
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29 raise ValueError("Unable to load template file basename: %s: %s" % (
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30 tplname, e))
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31
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32 # has it changed?
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33 try:
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34 stime = os.stat(src)[stat.ST_MTIME]
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35 except os.error as error:
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36 if error.errno != errno.ENOENT:
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37 raise
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38
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39 if src in self.templates and \
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40 stime <= self.templates[src].mtime:
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41 # compiled template is up to date
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42 return self.templates[src]
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43
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44 # compile the template
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45 pt = RoundupPageTemplate()
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46 # use pt_edit so we can pass the content_type guess too
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47 content_type = mimetypes.guess_type(filename)[0] or 'text/html'
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48 with open(src) as srcd:
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49 pt.pt_edit(srcd.read(), content_type)
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50 pt.id = filename
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51 pt.mtime = stime
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52 # Add it to the cache. We cannot do this until the template
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53 # is fully initialized, as we could otherwise have a race
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54 # condition when running with multiple threads:
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55 #
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56 # 1. Thread A notices the template is not in the cache,
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57 # adds it, but has not yet set "mtime".
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58 #
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59 # 2. Thread B notices the template is in the cache, checks
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60 # "mtime" (above) and crashes.
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61 #
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62 # Since Python dictionary access is atomic, as long as we
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63 # insert "pt" only after it is fully initialized, we avoid
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64 # this race condition. It's possible that two separate
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65 # threads will both do the work of initializing the template,
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66 # but the risk of wasted work is offset by avoiding a lock.
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67 self.templates[src] = pt
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68 return pt
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69
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70
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71 class RoundupPageTemplate(PageTemplate.PageTemplate):
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72 """A Roundup-specific PageTemplate.
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73
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74 Interrogate the client to set up Roundup-specific template variables
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75 to be available. See 'context' function for the list of variables.
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76
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77 """
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78
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79 def render(self, client, classname, request, **options):
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80 """Render this Page Template"""
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81
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82 if not self._v_cooked:
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83 self._cook()
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84
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85 __traceback_supplement__ = (PageTemplate.PageTemplateTracebackSupplement, self)
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86
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87 if self._v_errors:
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88 raise PageTemplate.PTRuntimeError('Page Template %s has errors.' %
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89 self.id)
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90
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91 # figure the context
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92 c = context(client, self, classname, request)
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93 c.update({'options': options})
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94
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95 # and go
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96 output = StringIO()
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97 TALInterpreter.TALInterpreter(self._v_program, self.macros,
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98 getEngine().getContext(c), output,
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99 tal=1, strictinsert=0)()
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100 return output.getvalue()
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