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bug: Allow UsageError exception to use more specific error code UsageError exception returned 400 error code but should return 405 when generated for a bad http method. Modified error handler to use 400 error code if self.response_code was less then 400. This should reproduce the standard error of 400 if one was not specified and preserve any other explicitly set response code. Also enhanced a test case to verify the 405 is returned.
author John Rouillard <rouilj@ieee.org>
date Mon, 20 Apr 2026 03:09:30 -0400
parents 646ba821f63e
children
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1 #!/usr/bin/env python
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2 #
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3 # Copyright (c) 2001 Bizar Software Pty Ltd (http://www.bizarsoftware.com.au/)
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4 # This module is free software, and you may redistribute it and/or modify
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5 # under the same terms as Python, so long as this copyright message and
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6 # disclaimer are retained in their original form.
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7 #
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8 # IN NO EVENT SHALL BIZAR SOFTWARE PTY LTD BE LIABLE TO ANY PARTY FOR
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9 # DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING
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10 # OUT OF THE USE OF THIS CODE, EVEN IF THE AUTHOR HAS BEEN ADVISED OF THE
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11 # POSSIBILITY OF SUCH DAMAGE.
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12 #
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13 # BIZAR SOFTWARE PTY LTD SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
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14 # BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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15 # FOR A PARTICULAR PURPOSE. THE CODE PROVIDED HEREUNDER IS ON AN "AS IS"
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16 # BASIS, AND THERE IS NO OBLIGATION WHATSOEVER TO PROVIDE MAINTENANCE,
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17 # SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
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18
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19 import sys
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20 import time
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21
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22 # If roundup is not on your normal path, add it here.
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23 # sys.path.append('/home/username/develop/roundup_dev')
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24 from roundup import version_check # noqa: F401
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25 from roundup.anypy.html import html_escape
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26 from roundup.anypy.strings import StringIO, s2b
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27 from roundup.i18n import _
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28
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29 #
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30 ## Configuration
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31 #
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32
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33 # Configuration can also be provided through the OS environment (or via
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34 # the Apache "SetEnv" configuration directive). If the variables
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35 # documented below are set, they _override_ any configuation defaults
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36 # given in this file.
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37
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38 # TRACKER_HOMES is a list of trackers, in the form
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39 # "NAME=DIR<sep>NAME2=DIR2<sep>...", where <sep> is the directory path
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40 # separator (";" on Windows, ":" on Unix).
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41
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42 # Make sure the NAME part doesn't include any url-unsafe characters like
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43 # spaces, as these confuse the cookie handling in browsers like IE.
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44
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45 # ROUNDUP_LOG is the name of the logfile; if it's empty or does not exist,
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46 # logging is turned off (unless you changed the default below).
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47
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48 # DEBUG_TO_CLIENT specifies whether debugging goes to the HTTP server (via
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49 # stderr) or to the web client (via cgitb).
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50 DEBUG_TO_CLIENT = False
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51
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52 # Return timing information to the client.
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53 # Set TIMING to:
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54 # "" - Do not sent timing info to client. (Default)
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55 # "COMMENT" - Hide timing in html comment, view source to see it.
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56 # "INLINE" - Display timing at bottom of web page
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57 TIMING = ""
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58
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59 # This indicates where the Roundup tracker lives
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60 TRACKER_HOMES = {
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61 # 'example': '/path/to/example',
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62 }
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63
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64
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65 # Where to log debugging information to. Use an instance of DevNull if you
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66 # don't want to log anywhere.
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67 class DevNull:
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68 def write(self, info):
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69 pass
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70
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71 def close(self):
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72 pass
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73
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74 def flush(self):
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75 pass
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76
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77
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78 #LOG = open('/var/log/roundup.cgi.log', 'a')
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79 LOG = DevNull()
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80
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81 #
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82 ## end configuration
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83 #
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84
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85
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86 #
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87 # Set up the error handler
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88 #
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89 try:
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90 import traceback
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91
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92 from roundup.cgi import cgitb
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93 except ImportError:
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94 print("Content-Type: text/plain\n")
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95 print(_("Failed to import cgitb!\n\n"))
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96 s = StringIO()
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97 traceback.print_exc(None, s)
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98 print(s.getvalue())
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99
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100
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101 #
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102 # Check environment for config items
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103 #
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104 def checkconfig():
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105 import os
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106 global TRACKER_HOMES, LOG
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107
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108 # see if there's an environment var. ROUNDUP_INSTANCE_HOMES is the
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109 # old name for it.
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110 if 'ROUNDUP_INSTANCE_HOMES' in os.environ:
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111 homes = os.environ.get('ROUNDUP_INSTANCE_HOMES')
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112 else:
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113 homes = os.environ.get('TRACKER_HOMES', '')
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114 if homes:
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115 TRACKER_HOMES = {}
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116 for home in homes.split(os.pathsep):
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117 try:
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118 name, dir_ = home.split('=', 1)
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119 except ValueError:
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120 # ignore invalid definitions
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121 continue
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122 if name and dir_:
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123 TRACKER_HOMES[name] = dir_
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124
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125 logname = os.environ.get('ROUNDUP_LOG', '')
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126 if logname:
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127 LOG = open(logname, 'a')
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128
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129 # ROUNDUP_DEBUG is checked directly in "roundup.cgi.client"
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130
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131
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132 #
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133 # Provide interface to CGI HTTP response handling
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134 #
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135 class RequestWrapper:
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136 '''Used to make the CGI server look like a BaseHTTPRequestHandler
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137 '''
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138 def __init__(self, wfile):
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139 self.rfile = sys.stdin
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140 self.wfile = wfile
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141
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142 def write(self, data):
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143 self.wfile.write(data)
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144
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145 def send_response(self, code):
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146 self.write(s2b('Status: %s\r\n' % code))
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147
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148 def send_header(self, keyword, value):
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149 self.write(s2b("%s: %s\r\n" % (keyword, value)))
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150
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151 def end_headers(self):
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152 self.write(b"\r\n")
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153
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154 def start_response(self, headers, response):
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155 self.send_response(response)
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156 for key, value in headers:
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157 self.send_header(key, value)
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158 self.end_headers()
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159
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160
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161 #
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162 # Main CGI handler
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163 #
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164 def main(out, err):
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165 import os
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166
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167 import roundup.cgi.client
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168 import roundup.instance
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169
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170 if TIMING:
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171 os.environ["CGI_SHOW_TIMING"] = TIMING
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172
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173 request = RequestWrapper(out)
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174 problem_header = roundup.cgi.client.are_header_values_safe(os.environ)
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175 if problem_header:
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176 error_body = """<!DOCTYPE HTML>
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177 <html lang="en">
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178 <head>
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179 <meta charset="utf-8">
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180 <title>Error response</title>
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181 </head>
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182 <body>
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183 <h1>Error response</h1>
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184 <p>Error code: 400</p>
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185 <p>Message: Invalid value: %s.</p>
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186 <p>Error code explanation: 400 - The value for the header is unacceptable.</p>
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187 </body>
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188 </html>
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189 """ % problem_header
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190
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191 request.send_response(400)
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192 request.send_header('Content-Type', 'text/html')
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193 request.send_header('Content-Length', '%s' % len(error_body))
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194 request.end_headers()
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195 out.write(s2b(error_body))
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diff changeset
196 return
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197
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diff changeset
198 path = os.environ.get('PATH_INFO', '/').split('/')
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199 request.path = os.environ.get('PATH_INFO', '/')
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200 tracker = path[1]
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201 os.environ['TRACKER_NAME'] = tracker
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202 os.environ['PATH_INFO'] = '/'.join(path[2:])
5412
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diff changeset
203 if tracker in TRACKER_HOMES:
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204 # redirect if we need a trailing '/'
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205 if len(path) == 2:
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diff changeset
206 request.send_response(301)
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207 # redirect
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diff changeset
208 if os.environ.get('HTTPS', '') == 'on':
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diff changeset
209 protocol = 'https'
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210 else:
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211 protocol = 'http'
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212 absolute_url = '%s://%s%s/' % (protocol, os.environ['HTTP_HOST'],
3736
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diff changeset
213 os.environ.get('REQUEST_URI', ''))
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diff changeset
214 request.send_header('Location', absolute_url)
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diff changeset
215 request.end_headers()
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diff changeset
216 out.write(b'Moved Permanently')
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diff changeset
217 else:
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diff changeset
218 tracker_home = TRACKER_HOMES[tracker]
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diff changeset
219 tracker = roundup.instance.open(tracker_home)
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220 if hasattr(tracker, 'Client'):
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parents:
diff changeset
221 client = tracker.Client(tracker, request, os.environ)
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parents:
diff changeset
222 else:
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diff changeset
223 client = roundup.cgi.client.Client(tracker, request, os.environ)
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parents:
diff changeset
224 try:
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parents:
diff changeset
225 client.main()
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parents:
diff changeset
226 except roundup.cgi.client.Unauthorised:
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diff changeset
227 request.send_response(403)
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diff changeset
228 request.send_header('Content-Type', 'text/html')
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diff changeset
229 request.end_headers()
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diff changeset
230 out.write(b'Unauthorised')
3736
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diff changeset
231 except roundup.cgi.client.NotFound:
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diff changeset
232 request.send_response(404)
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diff changeset
233 request.send_header('Content-Type', 'text/html')
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diff changeset
234 request.end_headers()
8558
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235 out.write(s2b('Not found: %s' % html_escape(client.path)))
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236
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parents:
diff changeset
237 else:
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diff changeset
238 from roundup.anypy import urllib_
3736
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diff changeset
239 request.send_response(200)
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diff changeset
240 request.send_header('Content-Type', 'text/html')
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parents:
diff changeset
241 request.end_headers()
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parents:
diff changeset
242 w = request.write
5540
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diff changeset
243 w(s2b(_('<html><head><title>Roundup trackers index</title></head>\n')))
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diff changeset
244 w(s2b(_('<body><h1>Roundup trackers index</h1><ol>\n')))
5412
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diff changeset
245 homes = sorted(TRACKER_HOMES.keys())
3736
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parents:
diff changeset
246 for tracker in homes:
8558
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diff changeset
247 w(s2b(_('<li><a href="%(tracker_url)s/index">%(tracker_name)s</a>\n') % {
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diff changeset
248 'tracker_url': os.environ['SCRIPT_NAME'] + '/' +
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diff changeset
249 urllib_.quote(tracker),
7579
032e5db8bf2f Convert cgi.escape to use html_escape from roundup.anypy.html
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parents: 5664
diff changeset
250 'tracker_name': html_escape(tracker)}))
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diff changeset
251 w(s2b(_('</ol></body></html>')))
3736
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parents:
diff changeset
252
8558
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diff changeset
253
3736
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parents:
diff changeset
254 #
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parents:
diff changeset
255 # Now do the actual CGI handling
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parents:
diff changeset
256 #
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parents:
diff changeset
257 out, err = sys.stdout, sys.stderr
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parents:
diff changeset
258 try:
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parents:
diff changeset
259 # force input/output to binary (important for file up/downloads)
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diff changeset
260 if sys.platform == "win32":
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diff changeset
261 import msvcrt
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diff changeset
262 import os
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263 msvcrt.setmode(sys.stdin.fileno(), os.O_BINARY)
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264 msvcrt.setmode(sys.stdout.fileno(), os.O_BINARY)
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265 checkconfig()
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266 sys.stdout = sys.stderr = LOG
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267 if sys.version_info[0] > 2:
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268 out_buf = out.buffer
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269 else:
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270 out_buf = out
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271 main(out_buf, err)
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272 except SystemExit:
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273 pass
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274 except:
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275 sys.stdout, sys.stderr = out, err
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276 out.write('Content-Type: text/html\n\n')
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277 if DEBUG_TO_CLIENT:
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278 cgitb.handler()
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279 else:
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280 out.write(cgitb.breaker())
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281 ts = time.ctime()
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282 out.write('''<p>%s: An error occurred. Please check
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283 the server log for more information.</p>''' % ts)
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284 print('EXCEPTION AT', ts, file=sys.stderr)
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285 traceback.print_exc(0, sys.stderr)
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286
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287 sys.stdout.flush()
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288 sys.stdout, sys.stderr = out, err
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289 LOG.close()
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290
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291 # vim: set filetype=python ts=4 sw=4 et si
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