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convert classic template for csrf defense
author John Rouillard <rouilj@ieee.org>
date Sat, 18 Mar 2017 22:55:50 -0400
parents 52b0e416f0bc
children 92757447dcf0 c75defc1c2f0 ab37c1705dbf
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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 # python version check
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20 from roundup import version_check
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21 from roundup.i18n import _
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22 import sys, time
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23
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24 #
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25 ## Configuration
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26 #
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27
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28 # Configuration can also be provided through the OS environment (or via
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29 # the Apache "SetEnv" configuration directive). If the variables
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30 # documented below are set, they _override_ any configuation defaults
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31 # given in this file.
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32
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33 # TRACKER_HOMES is a list of trackers, in the form
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34 # "NAME=DIR<sep>NAME2=DIR2<sep>...", where <sep> is the directory path
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35 # separator (";" on Windows, ":" on Unix).
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36
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37 # Make sure the NAME part doesn't include any url-unsafe characters like
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38 # spaces, as these confuse the cookie handling in browsers like IE.
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39
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40 # ROUNDUP_LOG is the name of the logfile; if it's empty or does not exist,
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41 # logging is turned off (unless you changed the default below).
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42
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43 # DEBUG_TO_CLIENT specifies whether debugging goes to the HTTP server (via
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44 # stderr) or to the web client (via cgitb).
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45 DEBUG_TO_CLIENT = False
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46
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47 # This indicates where the Roundup tracker lives
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48 TRACKER_HOMES = {
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49 # 'example': '/path/to/example',
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50 }
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51
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52 # Where to log debugging information to. Use an instance of DevNull if you
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53 # don't want to log anywhere.
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54 class DevNull:
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55 def write(self, info):
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56 pass
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57 def close(self):
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58 pass
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59 def flush(self):
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60 pass
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61 #LOG = open('/var/log/roundup.cgi.log', 'a')
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62 LOG = DevNull()
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63
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64 #
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65 ## end configuration
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66 #
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67
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68
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69 #
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70 # Set up the error handler
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71 #
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72 try:
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73 import traceback, StringIO, cgi
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74 from roundup.cgi import cgitb
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75 except:
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76 print "Content-Type: text/plain\n"
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77 print _("Failed to import cgitb!\n\n")
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78 s = StringIO.StringIO()
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79 traceback.print_exc(None, s)
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80 print s.getvalue()
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81
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82
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83 #
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84 # Check environment for config items
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85 #
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86 def checkconfig():
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87 import os, string
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88 global TRACKER_HOMES, LOG
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89
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90 # see if there's an environment var. ROUNDUP_INSTANCE_HOMES is the
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91 # old name for it.
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92 if os.environ.has_key('ROUNDUP_INSTANCE_HOMES'):
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93 homes = os.environ.get('ROUNDUP_INSTANCE_HOMES')
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94 else:
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95 homes = os.environ.get('TRACKER_HOMES', '')
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96 if homes:
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97 TRACKER_HOMES = {}
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98 for home in string.split(homes, os.pathsep):
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99 try:
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100 name, dir = string.split(home, '=', 1)
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101 except ValueError:
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102 # ignore invalid definitions
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103 continue
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104 if name and dir:
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105 TRACKER_HOMES[name] = dir
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106
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107 logname = os.environ.get('ROUNDUP_LOG', '')
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108 if logname:
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109 LOG = open(logname, 'a')
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110
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111 # ROUNDUP_DEBUG is checked directly in "roundup.cgi.client"
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112
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113
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114 #
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115 # Provide interface to CGI HTTP response handling
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116 #
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117 class RequestWrapper:
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118 '''Used to make the CGI server look like a BaseHTTPRequestHandler
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119 '''
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120 def __init__(self, wfile):
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121 self.rfile = sys.stdin
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122 self.wfile = wfile
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123 def write(self, data):
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124 self.wfile.write(data)
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125 def send_response(self, code):
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126 self.write('Status: %s\r\n'%code)
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127 def send_header(self, keyword, value):
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128 self.write("%s: %s\r\n" % (keyword, value))
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129 def end_headers(self):
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130 self.write("\r\n")
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131 def start_response(self, headers, response):
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132 self.send_response(response)
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133 for key, value in headers:
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134 self.send_header(key, value)
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135 self.end_headers()
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136
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137 #
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138 # Main CGI handler
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139 #
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140 def main(out, err):
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141 import os, string
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142 import roundup.instance
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143 path = string.split(os.environ.get('PATH_INFO', '/'), '/')
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144 request = RequestWrapper(out)
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145 request.path = os.environ.get('PATH_INFO', '/')
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146 tracker = path[1]
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147 os.environ['TRACKER_NAME'] = tracker
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148 os.environ['PATH_INFO'] = string.join(path[2:], '/')
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149 if TRACKER_HOMES.has_key(tracker):
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150 # redirect if we need a trailing '/'
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151 if len(path) == 2:
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152 request.send_response(301)
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153 # redirect
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154 if os.environ.get('HTTPS', '') == 'on':
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155 protocol = 'https'
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156 else:
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157 protocol = 'http'
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158 absolute_url = '%s://%s%s/'%(protocol, os.environ['HTTP_HOST'],
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159 os.environ.get('REQUEST_URI', ''))
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160 request.send_header('Location', absolute_url)
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161 request.end_headers()
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162 out.write('Moved Permanently')
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163 else:
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164 tracker_home = TRACKER_HOMES[tracker]
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165 tracker = roundup.instance.open(tracker_home)
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166 import roundup.cgi.client
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167 if hasattr(tracker, 'Client'):
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168 client = tracker.Client(tracker, request, os.environ)
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169 else:
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170 client = roundup.cgi.client.Client(tracker, request, os.environ)
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171 try:
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172 client.main()
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173 except roundup.cgi.client.Unauthorised:
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174 request.send_response(403)
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175 request.send_header('Content-Type', 'text/html')
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176 request.end_headers()
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177 out.write('Unauthorised')
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178 except roundup.cgi.client.NotFound:
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179 request.send_response(404)
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180 request.send_header('Content-Type', 'text/html')
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181 request.end_headers()
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182 out.write('Not found: %s'%client.path)
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183
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184 else:
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185 import urllib
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186 request.send_response(200)
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187 request.send_header('Content-Type', 'text/html')
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188 request.end_headers()
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189 w = request.write
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190 w(_('<html><head><title>Roundup trackers index</title></head>\n'))
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191 w(_('<body><h1>Roundup trackers index</h1><ol>\n'))
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192 homes = TRACKER_HOMES.keys()
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193 homes.sort()
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194 for tracker in homes:
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195 w(_('<li><a href="%(tracker_url)s/index">%(tracker_name)s</a>\n')%{
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196 'tracker_url': os.environ['SCRIPT_NAME']+'/'+
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197 urllib.quote(tracker),
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198 'tracker_name': cgi.escape(tracker)})
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199 w(_('</ol></body></html>'))
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200
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201 #
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202 # Now do the actual CGI handling
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203 #
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204 out, err = sys.stdout, sys.stderr
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205 try:
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206 # force input/output to binary (important for file up/downloads)
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207 if sys.platform == "win32":
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208 import os, msvcrt
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209 msvcrt.setmode(sys.stdin.fileno(), os.O_BINARY)
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210 msvcrt.setmode(sys.stdout.fileno(), os.O_BINARY)
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211 checkconfig()
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212 sys.stdout = sys.stderr = LOG
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Richard Jones <richard@users.sourceforge.net>
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213 main(out, err)
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214 except SystemExit:
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parents:
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215 pass
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parents:
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216 except:
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217 sys.stdout, sys.stderr = out, err
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218 out.write('Content-Type: text/html\n\n')
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
219 if DEBUG_TO_CLIENT:
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Richard Jones <richard@users.sourceforge.net>
parents:
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220 cgitb.handler()
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Richard Jones <richard@users.sourceforge.net>
parents:
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221 else:
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Richard Jones <richard@users.sourceforge.net>
parents:
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222 out.write(cgitb.breaker())
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Richard Jones <richard@users.sourceforge.net>
parents:
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223 ts = time.ctime()
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Richard Jones <richard@users.sourceforge.net>
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diff changeset
224 out.write('''<p>%s: An error occurred. Please check
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52b0e416f0bc Fix typo
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parents: 4570
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225 the server log for more information.</p>'''%ts)
3736
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parents:
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226 print >> sys.stderr, 'EXCEPTION AT', ts
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227 traceback.print_exc(0, sys.stderr)
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Richard Jones <richard@users.sourceforge.net>
parents:
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228
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229 sys.stdout.flush()
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230 sys.stdout, sys.stderr = out, err
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Richard Jones <richard@users.sourceforge.net>
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231 LOG.close()
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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/