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annotate roundup/cgi/wsgi_handler.py @ 7864:b080cdb8b199

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fix: document/fix wrapped HtmlProperty method. The wrapped method was not documented in reference.txt. It is now documented in reference.txt. The docstring documented that it would not break up long words. Fixed by adding break_long_words=False to prevent breaking string longer than the wrap length. Wrapping was breaking the hyperlinking of long urls. Added columns argument to set the wrap length (default 80 columns).
author John Rouillard <rouilj@ieee.org>
date Sun, 07 Apr 2024 15:27:18 -0400
parents dbeb6bf056c7
children 14c7c07b32d8
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1 # WSGI interface for Roundup Issue Tracker
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2 #
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3 # This module is free software, you may redistribute it
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4 # and/or modify under the same terms as Python.
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5 #
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6
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7 import os
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8 from contextlib import contextmanager
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9
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10 import roundup.instance
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11 from roundup.anypy import http_
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12 from roundup.anypy.html import html_escape
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13 from roundup.anypy.strings import s2b
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14 from roundup.cgi import TranslationService
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15 from roundup.cgi.client import BinaryFieldStorage
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16
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17 BaseHTTPRequestHandler = http_.server.BaseHTTPRequestHandler
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18 DEFAULT_ERROR_MESSAGE = http_.server.DEFAULT_ERROR_MESSAGE
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19
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20 try:
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21 # python2 is missing this definition
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22 http_.server.BaseHTTPRequestHandler.responses[429]
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23 except KeyError:
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24 http_.server.BaseHTTPRequestHandler.responses[429] = (
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25 'Too Many Requests',
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26 'The user has sent too many requests in '
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27 'a given amount of time ("rate limiting")',
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28 )
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29
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30
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31 class Headers(object):
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32 """ Idea more or less stolen from the 'apache.py' in same directory.
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33 Except that wsgi stores http headers in environment.
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34 """
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35 def __init__(self, environ):
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36 self.environ = environ
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37
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38 def mangle_name(self, name):
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39 """ Content-Type is handled specially, it doesn't have a HTTP_
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40 prefix in cgi.
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41 """
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42 n = name.replace('-', '_').upper()
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43 if n == 'CONTENT_TYPE':
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44 return n
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45 return 'HTTP_' + n
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46
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47 def get(self, name, default=None):
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48 return self.environ.get(self.mangle_name(name), default)
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49 getheader = get
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50
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51
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52 class Writer(object):
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53 '''Perform a start_response if need be when we start writing.'''
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54 def __init__(self, request):
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55 self.request = request # weakref.ref(request)
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56
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57 def write(self, data):
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58 f = self.request.get_wfile()
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59 self.write = f
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60 return self.write(data)
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61
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62
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63 class RequestHandler(object):
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64 def __init__(self, environ, start_response):
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65 self.__start_response = start_response
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66 self.__wfile = None
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67 self.headers = Headers(environ)
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68 self.rfile, self.wfile = None, Writer(self)
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69
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70 def start_response(self, headers, response_code):
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71 """Set HTTP response code"""
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72 message, _explain = BaseHTTPRequestHandler.responses[response_code]
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73 self.__wfile = self.__start_response('%d %s' % (response_code,
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74 message), headers)
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75
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76 def get_wfile(self):
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77 if self.__wfile is None:
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78 raise ValueError('start_response() not called')
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79 return self.__wfile
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80
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81
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82 class RequestDispatcher(object):
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83 def __init__(self, home, debug=False, timing=False, lang=None,
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84 feature_flags=None):
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85 if not os.path.isdir(home):
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86 raise ValueError('%r is not a directory' % (home,))
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87 self.home = home
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88 self.debug = debug
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89 self.timing = timing
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90 self.feature_flags = feature_flags or {}
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91 self.tracker = None
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92 if lang:
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93 self.translator = TranslationService.get_translation(
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94 lang,
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95 tracker_home=home)
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96 else:
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97 self.translator = None
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98
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99 if "cache_tracker" not in self.feature_flags or \
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100 self.feature_flags["cache_tracker"] is not False:
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101 self.tracker = roundup.instance.open(self.home, not self.debug)
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102 else:
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103 self.preload()
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104
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105 def __call__(self, environ, start_response):
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106 """Initialize with `apache.Request` object"""
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107 request = RequestHandler(environ, start_response)
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108
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109 if environ['REQUEST_METHOD'] == 'OPTIONS':
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110 if environ["PATH_INFO"][:5] == "/rest":
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111 # rest does support options
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112 # This I hope will result in self.form=None
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113 environ['CONTENT_LENGTH'] = 0
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114 else:
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115 code = 501
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116 message, explain = BaseHTTPRequestHandler.responses[code]
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117 request.start_response([('Content-Type', 'text/html')],
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118 code)
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119 request.wfile.write(s2b(DEFAULT_ERROR_MESSAGE % locals()))
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120 return []
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121
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122 # need to strip the leading '/'
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123 environ["PATH_INFO"] = environ["PATH_INFO"][1:]
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124 if self.timing:
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125 environ["CGI_SHOW_TIMING"] = self.timing
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126
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127 if environ['REQUEST_METHOD'] in ("OPTIONS", "DELETE"):
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128 # these methods have no data. When we init tracker.Client
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129 # set form to None to get a properly initialized empty
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130 # form.
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131 form = None
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132 else:
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133 form = BinaryFieldStorage(fp=environ['wsgi.input'], environ=environ)
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134
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135 if "cache_tracker" not in self.feature_flags or \
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136 self.feature_flags["cache_tracker"] is not False:
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137 client = self.tracker.Client(self.tracker, request, environ, form,
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138 self.translator)
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139 try:
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140 client.main()
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141 except roundup.cgi.client.NotFound:
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142 request.start_response([('Content-Type', 'text/html')], 404)
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143 request.wfile.write(s2b('Not found: %s' %
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144 html_escape(client.path)))
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145 else:
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146 with self.get_tracker() as tracker:
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147 client = tracker.Client(tracker, request, environ, form,
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148 self.translator)
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149 try:
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150 client.main()
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151 except roundup.cgi.client.NotFound:
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152 request.start_response([('Content-Type', 'text/html')], 404)
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153 request.wfile.write(s2b('Not found: %s' %
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diff changeset
154 html_escape(client.path)))
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Richard Jones <richard@users.sourceforge.net>
parents:
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155
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parents:
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156 # all body data has been written using wfile
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157 return []
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parents:
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158
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159 def preload(self):
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160 """ Trigger pre-loading of imports and templates """
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161 with self.get_tracker():
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162 pass
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163
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164 @contextmanager
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165 def get_tracker(self):
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166 # get a new instance for each request
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parents: 6061
diff changeset
167 yield roundup.instance.open(self.home, not self.debug)
Roundup Issue Tracker: http://roundup-tracker.org/