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annotate roundup/cgi/cgitb.py @ 5937:5d0873a4de4a

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fix rate limit headers - were ints/floats need to be strings Running under gunicorn rest requests were crashing. Not all of the values for the rate limit headers were strings. Some were numbers. This caused the header generation for wsgi to fail. Now the values are all strings.
author John Rouillard <rouilj@ieee.org>
date Sun, 20 Oct 2019 20:56:56 -0400
parents 883c9e90b403
children 70e6b053193b
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1 #
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2 # This module was written by Ka-Ping Yee, <ping@lfw.org>.
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3 #
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4
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5 """Extended CGI traceback handler by Ka-Ping Yee, <ping@lfw.org>.
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6 """
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7 from __future__ import print_function
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8 __docformat__ = 'restructuredtext'
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9
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10 import sys, os, keyword, linecache, tokenize, inspect, cgi
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11 import pydoc, traceback
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12
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13 from roundup.anypy.html import html_escape
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14
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15 from roundup.cgi import templating, TranslationService
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16 from roundup.anypy.strings import s2b
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17
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18 def get_translator(i18n=None):
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19 """Return message translation function (gettext)
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20
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21 Parameters:
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22 i18n - translation service, such as roundup.i18n module
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23 or TranslationService object.
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24
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25 Return ``gettext`` attribute of the ``i18n`` object, if available
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26 (must be a message translation function with one argument).
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27 If ``gettext`` cannot be obtained from ``i18n``, take default
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28 TranslationService.
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29
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30 """
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31 try:
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32 return i18n.gettext
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33 except:
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34 return TranslationService.get_translation().gettext
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35
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36 def breaker():
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37 return ('<body bgcolor="white">' +
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38 '<font color="white" size="-5"> > </font> ' +
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39 '</table>' * 5)
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40
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41 def niceDict(indent, dict):
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42 l = []
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43 for k in sorted(dict):
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44 v = dict[k]
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45 l.append('<tr><td><strong>%s</strong></td><td>%s</td></tr>'%(k,
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46 html_escape(repr(v))))
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47 return '\n'.join(l)
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48
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49 def pt_html(context=5, i18n=None):
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50 _ = get_translator(i18n)
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51 esc = html_escape
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52 exc_info = [esc(str(value)) for value in sys.exc_info()[:2]]
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53 l = [_('<h1>Templating Error</h1>\n'
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54 '<p><b>%(exc_type)s</b>: %(exc_value)s</p>\n'
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55 '<p class="help">Debugging information follows</p>'
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56 ) % {'exc_type': exc_info[0], 'exc_value': exc_info[1]},
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57 '<ol>',]
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58 from roundup.cgi.PageTemplates.Expressions import TraversalError
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59 t = inspect.trace(context)
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60 t.reverse()
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61 for frame, file, lnum, func, lines, index in t:
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62 args, varargs, varkw, locals = inspect.getargvalues(frame)
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63 if '__traceback_info__' in locals:
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64 ti = locals['__traceback_info__']
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65 if isinstance(ti, TraversalError):
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66 s = []
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67 for name, info in ti.path:
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68 s.append(_('<li>"%(name)s" (%(info)s)</li>')
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69 % {'name': name, 'info': esc(repr(info))})
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70 s = '\n'.join(s)
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71 l.append(_('<li>Looking for "%(name)s", '
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72 'current path:<ol>%(path)s</ol></li>'
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73 ) % {'name': ti.name, 'path': s})
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74 else:
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75 l.append(_('<li>In %s</li>') % esc(str(ti)))
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76 if '__traceback_supplement__' in locals:
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77 ts = locals['__traceback_supplement__']
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78 if len(ts) == 2:
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79 supp, context = ts
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80 s = _('A problem occurred in your template "%s".') \
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81 % str(context.id)
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82 if context._v_errors:
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83 s = s + '<br>' + '<br>'.join(
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84 [esc(x) for x in context._v_errors])
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85 l.append('<li>%s</li>'%s)
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86 elif len(ts) == 3:
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87 supp, context, info = ts
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88 l.append(_('''
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89 <li>While evaluating the %(info)r expression on line %(line)d
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90 <table class="otherinfo" style="font-size: 90%%">
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91 <tr><th colspan="2" class="header">Current variables:</th></tr>
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92 %(globals)s
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93 %(locals)s
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94 </table></li>
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95 ''') % {
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96 'info': info,
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97 'line': context.position[0],
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98 'globals': niceDict(' ', context.global_vars),
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99 'locals': niceDict(' ', context.local_vars)
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100 })
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101
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102 l.append('''
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103 </ol>
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104 <table style="font-size: 80%%; color: gray">
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105 <tr><th class="header" align="left">%s</th></tr>
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106 <tr><td><pre>%s</pre></td></tr>
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107 </table>''' % (_('Full traceback:'), html_escape(''.join(
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108 traceback.format_exception(*sys.exc_info())
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109 ))))
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110 l.append('<p>&nbsp;</p>')
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111 return '\n'.join(l)
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112
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113 def html(context=5, i18n=None):
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114 _ = get_translator(i18n)
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115 etype, evalue = sys.exc_info()[0], sys.exc_info()[1]
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116 if type(etype) is type:
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117 etype = etype.__name__
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118 pyver = 'Python ' + sys.version.split()[0] + '<br>' + sys.executable
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119 head = pydoc.html.heading(
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120 _('<font size=+1><strong>%(exc_type)s</strong>: %(exc_value)s</font>')
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121 % {'exc_type': etype, 'exc_value': evalue},
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122 '#ffffff', '#777777', pyver)
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123
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124 head = head + (_('<p>A problem occurred while running a Python script. '
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125 'Here is the sequence of function calls leading up to '
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126 'the error, with the most recent (innermost) call first. '
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127 'The exception attributes are:'))
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128
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129 indent = '<tt><small>%s</small>&nbsp;</tt>' % ('&nbsp;' * 5)
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130 traceback = []
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131 for frame, file, lnum, func, lines, index in inspect.trace(context):
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132 if file is None:
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133 link = _("&lt;file is None - probably inside <tt>eval</tt> "
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134 "or <tt>exec</tt>&gt;")
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135 else:
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136 file = os.path.abspath(file)
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137 link = '<a href="file:%s">%s</a>' % (file, pydoc.html.escape(file))
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138 args, varargs, varkw, locals = inspect.getargvalues(frame)
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139 if func == '?':
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140 call = ''
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141 else:
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142 call = _('in <strong>%s</strong>') % func + inspect.formatargvalues(
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143 args, varargs, varkw, locals,
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144 formatvalue=lambda value: '=' + pydoc.html.repr(value))
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145
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146 level = '''
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147 <table width="100%%" bgcolor="#dddddd" cellspacing=0 cellpadding=2 border=0>
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148 <tr><td>%s %s</td></tr></table>''' % (link, call)
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149
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150 if index is None or file is None:
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151 traceback.append('<p>' + level)
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152 continue
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153
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154 # do a file inspection
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155 names = []
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156 def tokeneater(type, token, start, end, line, names=names):
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157 if type == tokenize.NAME and token not in keyword.kwlist:
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158 if token not in names:
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159 names.append(token)
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160 if type == tokenize.NEWLINE: raise IndexError
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161 def linereader(file=file, lnum=[lnum]):
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162 line = s2b(linecache.getline(file, lnum[0]))
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163 lnum[0] = lnum[0] + 1
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164 return line
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165
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166 # The interface that is tokenize.tokenize in Python 3 is
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167 # called tokenize.generate_tokens in Python 2. However,
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168 # Python 2 has tokenize.tokenize with a different interface,
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169 # and Python 3 has an undocumented generate_tokens function,
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170 # also with a different interface, so a version check is
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171 # needed instead of checking for which functions exist.
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172 if sys.version_info[0] > 2:
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173 tokenize_fn = tokenize.tokenize
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174 else:
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175 tokenize_fn = tokenize.generate_tokens
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176 try:
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177 for t in tokenize_fn(linereader):
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178 tokeneater(*t)
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179 except IndexError:
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180 pass
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181 lvals = []
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182 for name in names:
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183 if name in frame.f_code.co_varnames:
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184 if name in locals:
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185 value = pydoc.html.repr(locals[name])
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186 else:
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187 value = _('<em>undefined</em>')
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188 name = '<strong>%s</strong>' % name
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189 else:
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190 if name in frame.f_globals:
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191 value = pydoc.html.repr(frame.f_globals[name])
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192 else:
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193 value = _('<em>undefined</em>')
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194 name = '<em>global</em> <strong>%s</strong>' % name
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195 lvals.append('%s&nbsp;= %s'%(name, value))
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196 if lvals:
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197 lvals = ', '.join(lvals)
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198 lvals = indent + '<small><font color="#909090">%s'\
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199 '</font></small><br>'%lvals
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200 else:
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201 lvals = ''
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202
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203 excerpt = []
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204 i = lnum - index
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205 for line in lines:
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206 number = '&nbsp;' * (5-len(str(i))) + str(i)
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207 number = '<small><font color="#909090">%s</font></small>' % number
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208 line = '<tt>%s&nbsp;%s</tt>' % (number, pydoc.html.preformat(line))
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209 if i == lnum:
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210 line = '''
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211 <table width="100%%" bgcolor="white" cellspacing=0 cellpadding=0 border=0>
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212 <tr><td>%s</td></tr></table>''' % line
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213 excerpt.append('\n' + line)
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214 if i == lnum:
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215 excerpt.append(lvals)
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216 i = i + 1
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217 traceback.append('<p>' + level + '\n'.join(excerpt))
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218
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219 traceback.reverse()
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220
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221 exception = '<p><strong>%s</strong>: %s' % (str(etype), str(evalue))
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222 attribs = []
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223 for name in dir(evalue):
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224 value = pydoc.html.repr(getattr(evalue, name))
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225 attribs.append('<br>%s%s&nbsp;= %s' % (indent, name, value))
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226
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227 return head + ' '.join(attribs) + ' '.join(traceback) + '<p>&nbsp;</p>'
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228
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229 def handler():
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230 print(breaker())
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231 print(html())
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232
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233 # vim: set filetype=python ts=4 sw=4 et si :
Roundup Issue Tracker: http://roundup-tracker.org/