Mercurial > p > roundup > code
annotate roundup/anypy/vendored/cgi.py @ 8528:fed0f839c260
fix: replace except: with except Exception: (by haosenwang1018@github)
Remove bare 'except:' statements replace with 'except Exception'.
In roundup_xmlrpc_server.py I changed Exception to BaseException so
the database gets closed on signals as well. The rest of the changes
do not look like they affect data integrity and are commited as
supplied.
| author | John Rouillard <rouilj@ieee.org> |
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| date | Thu, 26 Feb 2026 09:46:02 -0500 |
| parents | 185335b2301b |
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1 #! /usr/local/bin/python |
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2 |
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3 # NOTE: the above "/usr/local/bin/python" is NOT a mistake. It is |
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4 # intentionally NOT "/usr/bin/env python". On many systems |
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5 # (e.g. Solaris), /usr/local/bin is not in $PATH as passed to CGI |
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6 # scripts, and /usr/local/bin is the default directory where Python is |
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7 # installed, so /usr/bin/env would be unable to find python. Granted, |
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8 # binary installations by Linux vendors often install Python in |
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9 # /usr/bin. So let those vendors patch cgi.py to match their choice |
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10 # of installation. |
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11 |
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12 """Support module for CGI (Common Gateway Interface) scripts. |
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13 |
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14 This module defines a number of utilities for use by CGI scripts |
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15 written in Python. |
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16 |
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17 The global variable maxlen can be set to an integer indicating the maximum size |
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18 of a POST request. POST requests larger than this size will result in a |
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19 ValueError being raised during parsing. The default value of this variable is 0, |
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20 meaning the request size is unlimited. |
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21 """ |
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22 |
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23 # History |
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24 # ------- |
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25 # |
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26 # Michael McLay started this module. Steve Majewski changed the |
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27 # interface to SvFormContentDict and FormContentDict. The multipart |
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28 # parsing was inspired by code submitted by Andreas Paepcke. Guido van |
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29 # Rossum rewrote, reformatted and documented the module and is currently |
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30 # responsible for its maintenance. |
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31 # |
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32 |
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33 __version__ = "2.6" |
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34 |
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35 |
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36 # Imports |
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37 # ======= |
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38 |
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39 from io import StringIO, BytesIO, TextIOWrapper |
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40 from collections.abc import Mapping |
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41 import sys |
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42 import os |
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43 import urllib.parse |
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44 from email.parser import FeedParser |
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45 from email.message import Message |
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46 import html |
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47 import locale |
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48 import tempfile |
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49 import warnings |
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50 |
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51 __all__ = ["MiniFieldStorage", "FieldStorage", "parse", "parse_multipart", |
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52 "parse_header", "test", "print_exception", "print_environ", |
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53 "print_form", "print_directory", "print_arguments", |
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54 "print_environ_usage"] |
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55 |
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56 # Logging support |
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57 # =============== |
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58 |
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59 logfile = "" # Filename to log to, if not empty |
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60 logfp = None # File object to log to, if not None |
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61 |
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62 def initlog(*allargs): |
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63 """Write a log message, if there is a log file. |
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64 |
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65 Even though this function is called initlog(), you should always |
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66 use log(); log is a variable that is set either to initlog |
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67 (initially), to dolog (once the log file has been opened), or to |
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68 nolog (when logging is disabled). |
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69 |
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70 The first argument is a format string; the remaining arguments (if |
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71 any) are arguments to the % operator, so e.g. |
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72 log("%s: %s", "a", "b") |
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73 will write "a: b" to the log file, followed by a newline. |
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74 |
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75 If the global logfp is not None, it should be a file object to |
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76 which log data is written. |
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77 |
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78 If the global logfp is None, the global logfile may be a string |
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79 giving a filename to open, in append mode. This file should be |
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80 world writable!!! If the file can't be opened, logging is |
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81 silently disabled (since there is no safe place where we could |
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82 send an error message). |
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83 |
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84 """ |
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85 global log, logfp |
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86 warnings.warn("cgi.log() is deprecated as of 3.10. Use logging instead", |
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87 DeprecationWarning, stacklevel=2) |
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88 if logfile and not logfp: |
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89 try: |
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90 logfp = open(logfile, "a", encoding="locale") |
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91 except OSError: |
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92 pass |
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93 if not logfp: |
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94 log = nolog |
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95 else: |
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96 log = dolog |
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97 log(*allargs) |
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98 |
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99 def dolog(fmt, *args): |
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100 """Write a log message to the log file. See initlog() for docs.""" |
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101 logfp.write(fmt%args + "\n") |
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102 |
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103 def nolog(*allargs): |
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104 """Dummy function, assigned to log when logging is disabled.""" |
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105 pass |
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106 |
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107 def closelog(): |
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108 """Close the log file.""" |
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109 global log, logfile, logfp |
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110 logfile = '' |
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111 if logfp: |
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112 logfp.close() |
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113 logfp = None |
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114 log = initlog |
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115 |
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116 log = initlog # The current logging function |
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117 |
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118 |
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119 # Parsing functions |
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120 # ================= |
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121 |
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122 # Maximum input we will accept when REQUEST_METHOD is POST |
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123 # 0 ==> unlimited input |
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124 maxlen = 0 |
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125 |
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126 def parse(fp=None, environ=os.environ, keep_blank_values=0, |
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127 strict_parsing=0, separator='&'): |
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128 """Parse a query in the environment or from a file (default stdin) |
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129 |
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130 Arguments, all optional: |
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131 |
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132 fp : file pointer; default: sys.stdin.buffer |
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133 |
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134 environ : environment dictionary; default: os.environ |
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135 |
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136 keep_blank_values: flag indicating whether blank values in |
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137 percent-encoded forms should be treated as blank strings. |
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138 A true value indicates that blanks should be retained as |
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139 blank strings. The default false value indicates that |
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140 blank values are to be ignored and treated as if they were |
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141 not included. |
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142 |
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143 strict_parsing: flag indicating what to do with parsing errors. |
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144 If false (the default), errors are silently ignored. |
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145 If true, errors raise a ValueError exception. |
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146 |
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147 separator: str. The symbol to use for separating the query arguments. |
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148 Defaults to &. |
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149 """ |
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150 if fp is None: |
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151 fp = sys.stdin |
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152 |
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153 # field keys and values (except for files) are returned as strings |
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154 # an encoding is required to decode the bytes read from self.fp |
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155 if hasattr(fp,'encoding'): |
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156 encoding = fp.encoding |
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157 else: |
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158 encoding = 'latin-1' |
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159 |
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160 # fp.read() must return bytes |
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161 if isinstance(fp, TextIOWrapper): |
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162 fp = fp.buffer |
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163 |
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164 if not 'REQUEST_METHOD' in environ: |
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165 environ['REQUEST_METHOD'] = 'GET' # For testing stand-alone |
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166 if environ['REQUEST_METHOD'] == 'POST': |
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167 ctype, pdict = parse_header(environ['CONTENT_TYPE']) |
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168 if ctype == 'multipart/form-data': |
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169 return parse_multipart(fp, pdict, separator=separator) |
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170 elif ctype == 'application/x-www-form-urlencoded': |
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171 clength = int(environ['CONTENT_LENGTH']) |
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172 if maxlen and clength > maxlen: |
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173 raise ValueError('Maximum content length exceeded') |
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174 qs = fp.read(clength).decode(encoding) |
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175 else: |
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176 qs = '' # Unknown content-type |
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177 if 'QUERY_STRING' in environ: |
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178 if qs: qs = qs + '&' |
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179 qs = qs + environ['QUERY_STRING'] |
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180 elif sys.argv[1:]: |
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181 if qs: qs = qs + '&' |
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182 qs = qs + sys.argv[1] |
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183 environ['QUERY_STRING'] = qs # XXX Shouldn't, really |
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184 elif 'QUERY_STRING' in environ: |
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185 qs = environ['QUERY_STRING'] |
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186 else: |
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187 if sys.argv[1:]: |
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188 qs = sys.argv[1] |
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189 else: |
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190 qs = "" |
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191 environ['QUERY_STRING'] = qs # XXX Shouldn't, really |
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192 return urllib.parse.parse_qs(qs, keep_blank_values, strict_parsing, |
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193 encoding=encoding, separator=separator) |
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194 |
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195 |
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196 def parse_multipart(fp, pdict, encoding="utf-8", errors="replace", separator='&'): |
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197 """Parse multipart input. |
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198 |
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199 Arguments: |
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200 fp : input file |
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201 pdict: dictionary containing other parameters of content-type header |
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202 encoding, errors: request encoding and error handler, passed to |
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203 FieldStorage |
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204 |
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205 Returns a dictionary just like parse_qs(): keys are the field names, each |
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206 value is a list of values for that field. For non-file fields, the value |
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207 is a list of strings. |
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208 """ |
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209 # RFC 2046, Section 5.1 : The "multipart" boundary delimiters are always |
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210 # represented as 7bit US-ASCII. |
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211 boundary = pdict['boundary'].decode('ascii') |
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212 ctype = "multipart/form-data; boundary={}".format(boundary) |
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213 headers = Message() |
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214 headers.set_type(ctype) |
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215 try: |
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216 headers['Content-Length'] = pdict['CONTENT-LENGTH'] |
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217 except KeyError: |
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218 pass |
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219 fs = FieldStorage(fp, headers=headers, encoding=encoding, errors=errors, |
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220 environ={'REQUEST_METHOD': 'POST'}, separator=separator) |
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221 return {k: fs.getlist(k) for k in fs} |
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222 |
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223 def _parseparam(s): |
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224 while s[:1] == ';': |
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225 s = s[1:] |
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226 end = s.find(';') |
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227 while end > 0 and (s.count('"', 0, end) - s.count('\\"', 0, end)) % 2: |
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228 end = s.find(';', end + 1) |
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229 if end < 0: |
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230 end = len(s) |
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231 f = s[:end] |
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232 yield f.strip() |
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233 s = s[end:] |
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234 |
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235 def parse_header(line): |
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236 """Parse a Content-type like header. |
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237 |
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238 Return the main content-type and a dictionary of options. |
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239 |
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240 """ |
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241 parts = _parseparam(';' + line) |
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242 key = parts.__next__() |
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243 pdict = {} |
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244 for p in parts: |
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245 i = p.find('=') |
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246 if i >= 0: |
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247 name = p[:i].strip().lower() |
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248 value = p[i+1:].strip() |
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249 if len(value) >= 2 and value[0] == value[-1] == '"': |
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250 value = value[1:-1] |
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251 value = value.replace('\\\\', '\\').replace('\\"', '"') |
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252 pdict[name] = value |
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253 return key, pdict |
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254 |
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255 |
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256 # Classes for field storage |
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257 # ========================= |
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258 |
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259 class MiniFieldStorage: |
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260 |
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261 """Like FieldStorage, for use when no file uploads are possible.""" |
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262 |
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263 # Dummy attributes |
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264 filename = None |
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265 list = None |
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266 type = None |
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267 file = None |
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268 type_options = {} |
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269 disposition = None |
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270 disposition_options = {} |
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271 headers = {} |
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272 |
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273 def __init__(self, name, value): |
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274 """Constructor from field name and value.""" |
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275 self.name = name |
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276 self.value = value |
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277 # self.file = StringIO(value) |
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278 |
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279 def __repr__(self): |
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280 """Return printable representation.""" |
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281 return "MiniFieldStorage(%r, %r)" % (self.name, self.value) |
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282 |
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283 |
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284 class FieldStorage: |
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285 |
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286 """Store a sequence of fields, reading multipart/form-data. |
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287 |
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288 This class provides naming, typing, files stored on disk, and |
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289 more. At the top level, it is accessible like a dictionary, whose |
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290 keys are the field names. (Note: None can occur as a field name.) |
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291 The items are either a Python list (if there's multiple values) or |
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292 another FieldStorage or MiniFieldStorage object. If it's a single |
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293 object, it has the following attributes: |
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294 |
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295 name: the field name, if specified; otherwise None |
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296 |
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297 filename: the filename, if specified; otherwise None; this is the |
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298 client side filename, *not* the file name on which it is |
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299 stored (that's a temporary file you don't deal with) |
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300 |
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301 value: the value as a *string*; for file uploads, this |
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302 transparently reads the file every time you request the value |
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303 and returns *bytes* |
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304 |
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305 file: the file(-like) object from which you can read the data *as |
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306 bytes* ; None if the data is stored a simple string |
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307 |
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308 type: the content-type, or None if not specified |
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309 |
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310 type_options: dictionary of options specified on the content-type |
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311 line |
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312 |
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313 disposition: content-disposition, or None if not specified |
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314 |
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315 disposition_options: dictionary of corresponding options |
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316 |
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317 headers: a dictionary(-like) object (sometimes email.message.Message or a |
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318 subclass thereof) containing *all* headers |
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319 |
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320 The class is subclassable, mostly for the purpose of overriding |
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321 the make_file() method, which is called internally to come up with |
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322 a file open for reading and writing. This makes it possible to |
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323 override the default choice of storing all files in a temporary |
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324 directory and unlinking them as soon as they have been opened. |
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325 |
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326 """ |
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327 def __init__(self, fp=None, headers=None, outerboundary=b'', |
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328 environ=os.environ, keep_blank_values=0, strict_parsing=0, |
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329 limit=None, encoding='utf-8', errors='replace', |
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330 max_num_fields=None, separator='&'): |
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331 """Constructor. Read multipart/* until last part. |
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332 |
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333 Arguments, all optional: |
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334 |
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335 fp : file pointer; default: sys.stdin.buffer |
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336 (not used when the request method is GET) |
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337 Can be : |
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338 1. a TextIOWrapper object |
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339 2. an object whose read() and readline() methods return bytes |
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340 |
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341 headers : header dictionary-like object; default: |
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342 taken from environ as per CGI spec |
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343 |
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344 outerboundary : terminating multipart boundary |
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345 (for internal use only) |
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346 |
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347 environ : environment dictionary; default: os.environ |
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348 |
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349 keep_blank_values: flag indicating whether blank values in |
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350 percent-encoded forms should be treated as blank strings. |
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351 A true value indicates that blanks should be retained as |
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352 blank strings. The default false value indicates that |
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353 blank values are to be ignored and treated as if they were |
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354 not included. |
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355 |
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356 strict_parsing: flag indicating what to do with parsing errors. |
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357 If false (the default), errors are silently ignored. |
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358 If true, errors raise a ValueError exception. |
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359 |
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360 limit : used internally to read parts of multipart/form-data forms, |
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361 to exit from the reading loop when reached. It is the difference |
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362 between the form content-length and the number of bytes already |
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363 read |
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364 |
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365 encoding, errors : the encoding and error handler used to decode the |
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366 binary stream to strings. Must be the same as the charset defined |
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367 for the page sending the form (content-type : meta http-equiv or |
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368 header) |
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369 |
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370 max_num_fields: int. If set, then __init__ throws a ValueError |
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371 if there are more than n fields read by parse_qsl(). |
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372 |
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373 """ |
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374 method = 'GET' |
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375 self.keep_blank_values = keep_blank_values |
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376 self.strict_parsing = strict_parsing |
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377 self.max_num_fields = max_num_fields |
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378 self.separator = separator |
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379 if 'REQUEST_METHOD' in environ: |
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380 method = environ['REQUEST_METHOD'].upper() |
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381 self.qs_on_post = None |
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382 if method == 'GET' or method == 'HEAD': |
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383 if 'QUERY_STRING' in environ: |
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384 qs = environ['QUERY_STRING'] |
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385 elif sys.argv[1:]: |
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386 qs = sys.argv[1] |
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387 else: |
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388 qs = "" |
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389 qs = qs.encode(locale.getpreferredencoding(), 'surrogateescape') |
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390 fp = BytesIO(qs) |
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391 if headers is None: |
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392 headers = {'content-type': |
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393 "application/x-www-form-urlencoded"} |
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394 if headers is None: |
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395 headers = {} |
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396 if method == 'POST': |
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397 # Set default content-type for POST to what's traditional |
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398 headers['content-type'] = "application/x-www-form-urlencoded" |
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399 if 'CONTENT_TYPE' in environ: |
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400 headers['content-type'] = environ['CONTENT_TYPE'] |
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401 if 'QUERY_STRING' in environ: |
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402 self.qs_on_post = environ['QUERY_STRING'] |
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403 if 'CONTENT_LENGTH' in environ: |
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404 headers['content-length'] = environ['CONTENT_LENGTH'] |
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405 else: |
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406 if not (isinstance(headers, (Mapping, Message))): |
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407 raise TypeError("headers must be mapping or an instance of " |
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408 "email.message.Message") |
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409 self.headers = headers |
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410 if fp is None: |
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411 self.fp = sys.stdin.buffer |
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412 # self.fp.read() must return bytes |
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413 elif isinstance(fp, TextIOWrapper): |
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414 self.fp = fp.buffer |
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415 else: |
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416 if not (hasattr(fp, 'read') and hasattr(fp, 'readline')): |
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417 raise TypeError("fp must be file pointer") |
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418 self.fp = fp |
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419 |
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420 self.encoding = encoding |
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421 self.errors = errors |
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422 |
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423 if not isinstance(outerboundary, bytes): |
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424 raise TypeError('outerboundary must be bytes, not %s' |
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425 % type(outerboundary).__name__) |
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426 self.outerboundary = outerboundary |
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427 |
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428 self.bytes_read = 0 |
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429 self.limit = limit |
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430 |
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431 # Process content-disposition header |
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432 cdisp, pdict = "", {} |
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433 if 'content-disposition' in self.headers: |
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|
434 cdisp, pdict = parse_header(self.headers['content-disposition']) |
|
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|
435 self.disposition = cdisp |
|
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|
436 self.disposition_options = pdict |
|
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|
437 self.name = None |
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|
438 if 'name' in pdict: |
|
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|
439 self.name = pdict['name'] |
|
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440 self.filename = None |
|
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|
441 if 'filename' in pdict: |
|
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|
442 self.filename = pdict['filename'] |
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|
443 self._binary_file = self.filename is not None |
|
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|
444 |
|
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|
445 # Process content-type header |
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446 # |
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447 # Honor any existing content-type header. But if there is no |
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|
448 # content-type header, use some sensible defaults. Assume |
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449 # outerboundary is "" at the outer level, but something non-false |
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450 # inside a multi-part. The default for an inner part is text/plain, |
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451 # but for an outer part it should be urlencoded. This should catch |
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452 # bogus clients which erroneously forget to include a content-type |
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453 # header. |
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454 # |
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455 # See below for what we do if there does exist a content-type header, |
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456 # but it happens to be something we don't understand. |
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|
457 if 'content-type' in self.headers: |
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|
458 ctype, pdict = parse_header(self.headers['content-type']) |
|
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|
459 elif self.outerboundary or method != 'POST': |
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|
460 ctype, pdict = "text/plain", {} |
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|
461 else: |
|
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|
462 ctype, pdict = 'application/x-www-form-urlencoded', {} |
|
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463 self.type = ctype |
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|
464 self.type_options = pdict |
|
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|
465 if 'boundary' in pdict: |
|
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|
466 self.innerboundary = pdict['boundary'].encode(self.encoding, |
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|
467 self.errors) |
|
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|
468 else: |
|
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|
469 self.innerboundary = b"" |
|
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|
470 |
|
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471 clen = -1 |
|
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|
472 if 'content-length' in self.headers: |
|
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|
473 try: |
|
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|
474 clen = int(self.headers['content-length']) |
|
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|
475 except ValueError: |
|
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|
476 pass |
|
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|
477 if maxlen and clen > maxlen: |
|
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|
478 raise ValueError('Maximum content length exceeded') |
|
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479 self.length = clen |
|
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|
480 if self.limit is None and clen >= 0: |
|
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|
481 self.limit = clen |
|
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|
482 |
|
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|
483 self.list = self.file = None |
|
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484 self.done = 0 |
|
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|
485 if ctype == 'application/x-www-form-urlencoded': |
|
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|
486 self.read_urlencoded() |
|
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|
487 elif ctype[:10] == 'multipart/': |
|
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|
488 self.read_multi(environ, keep_blank_values, strict_parsing) |
|
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|
489 else: |
|
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|
490 self.read_single() |
|
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|
491 |
|
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|
492 def __del__(self): |
|
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|
493 try: |
|
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|
494 self.file.close() |
|
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|
495 except AttributeError: |
|
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|
496 pass |
|
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|
497 |
|
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|
498 def __enter__(self): |
|
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|
499 return self |
|
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|
500 |
|
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|
501 def __exit__(self, *args): |
|
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|
502 self.file.close() |
|
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|
503 |
|
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|
504 def __repr__(self): |
|
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|
505 """Return a printable representation.""" |
|
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|
506 return "FieldStorage(%r, %r, %r)" % ( |
|
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|
507 self.name, self.filename, self.value) |
|
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|
508 |
|
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|
509 def __iter__(self): |
|
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|
510 return iter(self.keys()) |
|
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|
511 |
|
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|
512 def __getattr__(self, name): |
|
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|
513 if name != 'value': |
|
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|
514 raise AttributeError(name) |
|
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|
515 if self.file: |
|
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|
516 self.file.seek(0) |
|
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|
517 value = self.file.read() |
|
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|
518 self.file.seek(0) |
|
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|
519 elif self.list is not None: |
|
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|
520 value = self.list |
|
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|
521 else: |
|
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|
522 value = None |
|
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|
523 return value |
|
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|
524 |
|
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|
525 def __getitem__(self, key): |
|
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|
526 """Dictionary style indexing.""" |
|
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|
527 if self.list is None: |
|
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|
528 raise TypeError("not indexable") |
|
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|
529 found = [] |
|
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|
530 for item in self.list: |
|
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|
531 if item.name == key: found.append(item) |
|
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|
532 if not found: |
|
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|
533 raise KeyError(key) |
|
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|
534 if len(found) == 1: |
|
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|
535 return found[0] |
|
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|
536 else: |
|
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|
537 return found |
|
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|
538 |
|
978285986b2c
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|
539 def getvalue(self, key, default=None): |
|
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changeset
|
540 """Dictionary style get() method, including 'value' lookup.""" |
|
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changeset
|
541 if key in self: |
|
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|
542 value = self[key] |
|
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changeset
|
543 if isinstance(value, list): |
|
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|
544 return [x.value for x in value] |
|
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|
545 else: |
|
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|
546 return value.value |
|
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|
547 else: |
|
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|
548 return default |
|
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|
549 |
|
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|
550 def getfirst(self, key, default=None): |
|
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|
551 """ Return the first value received.""" |
|
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|
552 if key in self: |
|
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|
553 value = self[key] |
|
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|
554 if isinstance(value, list): |
|
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|
555 return value[0].value |
|
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|
556 else: |
|
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|
557 return value.value |
|
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|
558 else: |
|
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|
559 return default |
|
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|
560 |
|
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|
561 def getlist(self, key): |
|
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562 """ Return list of received values.""" |
|
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|
563 if key in self: |
|
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|
564 value = self[key] |
|
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|
565 if isinstance(value, list): |
|
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|
566 return [x.value for x in value] |
|
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|
567 else: |
|
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|
568 return [value.value] |
|
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|
569 else: |
|
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|
570 return [] |
|
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John Rouillard <rouilj@ieee.org>
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|
571 |
|
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|
572 def keys(self): |
|
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|
573 """Dictionary style keys() method.""" |
|
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|
574 if self.list is None: |
|
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|
575 raise TypeError("not indexable") |
|
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576 return list(set(item.name for item in self.list)) |
|
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|
577 |
|
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|
578 def __contains__(self, key): |
|
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|
579 """Dictionary style __contains__ method.""" |
|
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|
580 if self.list is None: |
|
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|
581 raise TypeError("not indexable") |
|
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changeset
|
582 return any(item.name == key for item in self.list) |
|
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parents:
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|
583 |
|
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|
584 def __len__(self): |
|
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|
585 """Dictionary style len(x) support.""" |
|
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|
586 return len(self.keys()) |
|
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|
587 |
|
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|
588 def __bool__(self): |
|
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|
589 if self.list is None: |
|
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|
590 raise TypeError("Cannot be converted to bool.") |
|
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|
591 return bool(self.list) |
|
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|
592 |
|
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changeset
|
593 def read_urlencoded(self): |
|
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|
594 """Internal: read data in query string format.""" |
|
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|
595 qs = self.fp.read(self.length) |
|
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|
596 if not isinstance(qs, bytes): |
|
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|
597 raise ValueError("%s should return bytes, got %s" \ |
|
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|
598 % (self.fp, type(qs).__name__)) |
|
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|
599 qs = qs.decode(self.encoding, self.errors) |
|
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changeset
|
600 if self.qs_on_post: |
|
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|
601 qs += '&' + self.qs_on_post |
|
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|
602 query = urllib.parse.parse_qsl( |
|
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|
603 qs, self.keep_blank_values, self.strict_parsing, |
|
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|
604 encoding=self.encoding, errors=self.errors, |
|
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|
605 max_num_fields=self.max_num_fields, separator=self.separator) |
|
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|
606 self.list = [MiniFieldStorage(key, value) for key, value in query] |
|
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|
607 self.skip_lines() |
|
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|
608 |
|
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|
609 FieldStorageClass = None |
|
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|
610 |
|
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|
611 def read_multi(self, environ, keep_blank_values, strict_parsing): |
|
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|
612 """Internal: read a part that is itself multipart.""" |
|
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|
613 ib = self.innerboundary |
|
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|
614 if not valid_boundary(ib): |
|
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|
615 raise ValueError('Invalid boundary in multipart form: %r' % (ib,)) |
|
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|
616 self.list = [] |
|
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|
617 if self.qs_on_post: |
|
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|
618 query = urllib.parse.parse_qsl( |
|
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|
619 self.qs_on_post, self.keep_blank_values, self.strict_parsing, |
|
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|
620 encoding=self.encoding, errors=self.errors, |
|
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|
621 max_num_fields=self.max_num_fields, separator=self.separator) |
|
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|
622 self.list.extend(MiniFieldStorage(key, value) for key, value in query) |
|
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|
623 |
|
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|
624 klass = self.FieldStorageClass or self.__class__ |
|
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|
625 first_line = self.fp.readline() # bytes |
|
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|
626 if not isinstance(first_line, bytes): |
|
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|
627 raise ValueError("%s should return bytes, got %s" \ |
|
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|
628 % (self.fp, type(first_line).__name__)) |
|
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|
629 self.bytes_read += len(first_line) |
|
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|
630 |
|
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changeset
|
631 # Ensure that we consume the file until we've hit our inner boundary |
|
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|
632 while (first_line.strip() != (b"--" + self.innerboundary) and |
|
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|
633 first_line): |
|
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|
634 first_line = self.fp.readline() |
|
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|
635 self.bytes_read += len(first_line) |
|
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|
636 |
|
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|
637 # Propagate max_num_fields into the sub class appropriately |
|
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|
638 max_num_fields = self.max_num_fields |
|
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|
639 if max_num_fields is not None: |
|
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|
640 max_num_fields -= len(self.list) |
|
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|
641 |
|
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|
642 while True: |
|
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|
643 parser = FeedParser() |
|
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|
644 hdr_text = b"" |
|
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|
645 while True: |
|
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|
646 data = self.fp.readline() |
|
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|
647 hdr_text += data |
|
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|
648 if not data.strip(): |
|
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changeset
|
649 break |
|
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|
650 if not hdr_text: |
|
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|
651 break |
|
978285986b2c
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|
652 # parser takes strings, not bytes |
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653 self.bytes_read += len(hdr_text) |
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654 parser.feed(hdr_text.decode(self.encoding, self.errors)) |
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655 headers = parser.close() |
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656 |
|
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|
657 # Some clients add Content-Length for part headers, ignore them |
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|
658 if 'content-length' in headers: |
|
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659 del headers['content-length'] |
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|
660 |
|
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661 limit = None if self.limit is None \ |
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662 else self.limit - self.bytes_read |
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663 part = klass(self.fp, headers, ib, environ, keep_blank_values, |
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|
664 strict_parsing, limit, |
|
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665 self.encoding, self.errors, max_num_fields, self.separator) |
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|
666 |
|
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|
667 if max_num_fields is not None: |
|
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668 max_num_fields -= 1 |
|
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|
669 if part.list: |
|
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670 max_num_fields -= len(part.list) |
|
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671 if max_num_fields < 0: |
|
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672 raise ValueError('Max number of fields exceeded') |
|
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|
673 |
|
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|
674 self.bytes_read += part.bytes_read |
|
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|
675 self.list.append(part) |
|
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676 if part.done or self.bytes_read >= self.length > 0: |
|
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|
677 break |
|
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|
678 self.skip_lines() |
|
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|
679 |
|
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|
680 def read_single(self): |
|
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681 """Internal: read an atomic part.""" |
|
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|
682 if self.length >= 0: |
|
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|
683 self.read_binary() |
|
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|
684 self.skip_lines() |
|
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|
685 else: |
|
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|
686 self.read_lines() |
|
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|
687 self.file.seek(0) |
|
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|
688 |
|
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|
689 bufsize = 8*1024 # I/O buffering size for copy to file |
|
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|
690 |
|
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|
691 def read_binary(self): |
|
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|
692 """Internal: read binary data.""" |
|
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|
693 self.file = self.make_file() |
|
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694 todo = self.length |
|
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|
695 if todo >= 0: |
|
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|
696 while todo > 0: |
|
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697 data = self.fp.read(min(todo, self.bufsize)) # bytes |
|
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|
698 if not isinstance(data, bytes): |
|
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|
699 raise ValueError("%s should return bytes, got %s" |
|
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|
700 % (self.fp, type(data).__name__)) |
|
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|
701 self.bytes_read += len(data) |
|
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|
702 if not data: |
|
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|
703 self.done = -1 |
|
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|
704 break |
|
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|
705 self.file.write(data) |
|
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|
706 todo = todo - len(data) |
|
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|
707 |
|
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|
708 def read_lines(self): |
|
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|
709 """Internal: read lines until EOF or outerboundary.""" |
|
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|
710 if self._binary_file: |
|
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|
711 self.file = self.__file = BytesIO() # store data as bytes for files |
|
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|
712 else: |
|
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|
713 self.file = self.__file = StringIO() # as strings for other fields |
|
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|
714 if self.outerboundary: |
|
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|
715 self.read_lines_to_outerboundary() |
|
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|
716 else: |
|
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|
717 self.read_lines_to_eof() |
|
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|
718 |
|
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|
719 def __write(self, line): |
|
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|
720 """line is always bytes, not string""" |
|
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|
721 if self.__file is not None: |
|
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|
722 if self.__file.tell() + len(line) > 1000: |
|
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|
723 self.file = self.make_file() |
|
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|
724 data = self.__file.getvalue() |
|
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|
725 self.file.write(data) |
|
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|
726 self.__file = None |
|
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|
727 if self._binary_file: |
|
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|
728 # keep bytes |
|
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|
729 self.file.write(line) |
|
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|
730 else: |
|
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|
731 # decode to string |
|
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|
732 self.file.write(line.decode(self.encoding, self.errors)) |
|
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|
733 |
|
978285986b2c
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|
734 def read_lines_to_eof(self): |
|
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|
735 """Internal: read lines until EOF.""" |
|
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|
736 while 1: |
|
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|
737 line = self.fp.readline(1<<16) # bytes |
|
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|
738 self.bytes_read += len(line) |
|
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|
739 if not line: |
|
978285986b2c
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|
740 self.done = -1 |
|
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|
741 break |
|
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changeset
|
742 self.__write(line) |
|
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|
743 |
|
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|
744 def read_lines_to_outerboundary(self): |
|
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|
745 """Internal: read lines until outerboundary. |
|
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|
746 Data is read as bytes: boundaries and line ends must be converted |
|
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|
747 to bytes for comparisons. |
|
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|
748 """ |
|
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|
749 next_boundary = b"--" + self.outerboundary |
|
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|
750 last_boundary = next_boundary + b"--" |
|
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|
751 delim = b"" |
|
978285986b2c
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|
752 last_line_lfend = True |
|
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|
753 _read = 0 |
|
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|
754 while 1: |
|
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John Rouillard <rouilj@ieee.org>
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|
755 |
|
978285986b2c
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John Rouillard <rouilj@ieee.org>
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changeset
|
756 if self.limit is not None and 0 <= self.limit <= _read: |
|
978285986b2c
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John Rouillard <rouilj@ieee.org>
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diff
changeset
|
757 break |
|
978285986b2c
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changeset
|
758 line = self.fp.readline(1<<16) # bytes |
|
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|
759 self.bytes_read += len(line) |
|
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changeset
|
760 _read += len(line) |
|
978285986b2c
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diff
changeset
|
761 if not line: |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
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diff
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|
762 self.done = -1 |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
763 break |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
764 if delim == b"\r": |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
765 line = delim + line |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
766 delim = b"" |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
767 if line.startswith(b"--") and last_line_lfend: |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
768 strippedline = line.rstrip() |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
769 if strippedline == next_boundary: |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
770 break |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
771 if strippedline == last_boundary: |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
772 self.done = 1 |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
773 break |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
774 odelim = delim |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
775 if line.endswith(b"\r\n"): |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
776 delim = b"\r\n" |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
777 line = line[:-2] |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
778 last_line_lfend = True |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
779 elif line.endswith(b"\n"): |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
780 delim = b"\n" |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
781 line = line[:-1] |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
782 last_line_lfend = True |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
783 elif line.endswith(b"\r"): |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
784 # We may interrupt \r\n sequences if they span the 2**16 |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
785 # byte boundary |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
786 delim = b"\r" |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
787 line = line[:-1] |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
788 last_line_lfend = False |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
789 else: |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
790 delim = b"" |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
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parents:
diff
changeset
|
791 last_line_lfend = False |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
792 self.__write(odelim + line) |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
793 |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
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changeset
|
794 def skip_lines(self): |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
795 """Internal: skip lines until outer boundary if defined.""" |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
796 if not self.outerboundary or self.done: |
|
978285986b2c
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John Rouillard <rouilj@ieee.org>
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|
797 return |
|
978285986b2c
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John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
798 next_boundary = b"--" + self.outerboundary |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
799 last_boundary = next_boundary + b"--" |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
800 last_line_lfend = True |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
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changeset
|
801 while True: |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
802 line = self.fp.readline(1<<16) |
|
978285986b2c
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John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
803 self.bytes_read += len(line) |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
804 if not line: |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
805 self.done = -1 |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
806 break |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
807 if line.endswith(b"--") and last_line_lfend: |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
808 strippedline = line.strip() |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
809 if strippedline == next_boundary: |
|
978285986b2c
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John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
810 break |
|
978285986b2c
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John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
811 if strippedline == last_boundary: |
|
978285986b2c
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John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
812 self.done = 1 |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
813 break |
|
978285986b2c
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parents:
diff
changeset
|
814 last_line_lfend = line.endswith(b'\n') |
|
978285986b2c
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John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
815 |
|
978285986b2c
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John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
816 def make_file(self): |
|
978285986b2c
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John Rouillard <rouilj@ieee.org>
parents:
diff
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|
817 """Overridable: return a readable & writable file. |
|
978285986b2c
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John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
818 |
|
978285986b2c
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John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
819 The file will be used as follows: |
|
978285986b2c
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John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
820 - data is written to it |
|
978285986b2c
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John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
821 - seek(0) |
|
978285986b2c
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John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
822 - data is read from it |
|
978285986b2c
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parents:
diff
changeset
|
823 |
|
978285986b2c
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John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
824 The file is opened in binary mode for files, in text mode |
|
978285986b2c
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John Rouillard <rouilj@ieee.org>
parents:
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|
825 for other fields |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
826 |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
827 This version opens a temporary file for reading and writing, |
|
978285986b2c
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John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
828 and immediately deletes (unlinks) it. The trick (on Unix!) is |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
829 that the file can still be used, but it can't be opened by |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
830 another process, and it will automatically be deleted when it |
|
978285986b2c
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John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
831 is closed or when the current process terminates. |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
832 |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
833 If you want a more permanent file, you derive a class which |
|
978285986b2c
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John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
834 overrides this method. If you want a visible temporary file |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
835 that is nevertheless automatically deleted when the script |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
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parents:
diff
changeset
|
836 terminates, try defining a __del__ method in a derived class |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
837 which unlinks the temporary files you have created. |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
838 |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
839 """ |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
840 if self._binary_file: |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
841 return tempfile.TemporaryFile("wb+") |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
842 else: |
|
978285986b2c
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John Rouillard <rouilj@ieee.org>
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diff
changeset
|
843 return tempfile.TemporaryFile("w+", |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
844 encoding=self.encoding, newline = '\n') |
|
978285986b2c
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John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
845 |
|
978285986b2c
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John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
846 |
|
978285986b2c
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John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
847 # Test/debug code |
|
978285986b2c
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John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
848 # =============== |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
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diff
changeset
|
849 |
|
978285986b2c
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John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
850 def test(environ=os.environ): |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
851 """Robust test CGI script, usable as main program. |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
852 |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
853 Write minimal HTTP headers and dump all information provided to |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
854 the script in HTML form. |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
855 |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
856 """ |
|
978285986b2c
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John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
857 print("Content-type: text/html") |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
858 print() |
|
978285986b2c
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John Rouillard <rouilj@ieee.org>
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diff
changeset
|
859 sys.stderr = sys.stdout |
|
978285986b2c
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John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
860 try: |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
861 form = FieldStorage() # Replace with other classes to test those |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
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|
862 print_directory() |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
863 print_arguments() |
|
978285986b2c
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John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
864 print_form(form) |
|
978285986b2c
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John Rouillard <rouilj@ieee.org>
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diff
changeset
|
865 print_environ(environ) |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
866 print_environ_usage() |
|
978285986b2c
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John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
867 def f(): |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
868 exec("testing print_exception() -- <I>italics?</I>") |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
869 def g(f=f): |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
870 f() |
|
978285986b2c
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John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
871 print("<H3>What follows is a test, not an actual exception:</H3>") |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
872 g() |
|
8528
fed0f839c260
fix: replace except: with except Exception: (by haosenwang1018@github)
John Rouillard <rouilj@ieee.org>
parents:
8308
diff
changeset
|
873 except Exception: |
|
7582
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
874 print_exception() |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
875 |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
876 print("<H1>Second try with a small maxlen...</H1>") |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
877 |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
878 global maxlen |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
879 maxlen = 50 |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
880 try: |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
881 form = FieldStorage() # Replace with other classes to test those |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
882 print_directory() |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
883 print_arguments() |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
884 print_form(form) |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
885 print_environ(environ) |
|
8528
fed0f839c260
fix: replace except: with except Exception: (by haosenwang1018@github)
John Rouillard <rouilj@ieee.org>
parents:
8308
diff
changeset
|
886 except Exception: |
|
7582
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
887 print_exception() |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
888 |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
889 def print_exception(type=None, value=None, tb=None, limit=None): |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
890 if type is None: |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
891 type, value, tb = sys.exc_info() |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
892 import traceback |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
893 print() |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
894 print("<H3>Traceback (most recent call last):</H3>") |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
895 list = traceback.format_tb(tb, limit) + \ |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
896 traceback.format_exception_only(type, value) |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
897 print("<PRE>%s<B>%s</B></PRE>" % ( |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
898 html.escape("".join(list[:-1])), |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
899 html.escape(list[-1]), |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
900 )) |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
901 del tb |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
902 |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
903 def print_environ(environ=os.environ): |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
904 """Dump the shell environment as HTML.""" |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
905 keys = sorted(environ.keys()) |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
906 print() |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
907 print("<H3>Shell Environment:</H3>") |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
908 print("<DL>") |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
909 for key in keys: |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
910 print("<DT>", html.escape(key), "<DD>", html.escape(environ[key])) |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
911 print("</DL>") |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
912 print() |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
913 |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
914 def print_form(form): |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
915 """Dump the contents of a form as HTML.""" |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
916 keys = sorted(form.keys()) |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
917 print() |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
918 print("<H3>Form Contents:</H3>") |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
919 if not keys: |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
920 print("<P>No form fields.") |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
921 print("<DL>") |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
922 for key in keys: |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
923 print("<DT>" + html.escape(key) + ":", end=' ') |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
924 value = form[key] |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
925 print("<i>" + html.escape(repr(type(value))) + "</i>") |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
926 print("<DD>" + html.escape(repr(value))) |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
927 print("</DL>") |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
928 print() |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
929 |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
930 def print_directory(): |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
931 """Dump the current directory as HTML.""" |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
932 print() |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
933 print("<H3>Current Working Directory:</H3>") |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
934 try: |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
935 pwd = os.getcwd() |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
936 except OSError as msg: |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
937 print("OSError:", html.escape(str(msg))) |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
938 else: |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
939 print(html.escape(pwd)) |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
940 print() |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
941 |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
942 def print_arguments(): |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
943 print() |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
944 print("<H3>Command Line Arguments:</H3>") |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
945 print() |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
946 print(sys.argv) |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
947 print() |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
948 |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
949 def print_environ_usage(): |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
950 """Dump a list of environment variables used by CGI as HTML.""" |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
951 print(""" |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
952 <H3>These environment variables could have been set:</H3> |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
953 <UL> |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
954 <LI>AUTH_TYPE |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
955 <LI>CONTENT_LENGTH |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
956 <LI>CONTENT_TYPE |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
957 <LI>DATE_GMT |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
958 <LI>DATE_LOCAL |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
959 <LI>DOCUMENT_NAME |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
960 <LI>DOCUMENT_ROOT |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
961 <LI>DOCUMENT_URI |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
962 <LI>GATEWAY_INTERFACE |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
963 <LI>LAST_MODIFIED |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
964 <LI>PATH |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
965 <LI>PATH_INFO |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
966 <LI>PATH_TRANSLATED |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
967 <LI>QUERY_STRING |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
968 <LI>REMOTE_ADDR |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
969 <LI>REMOTE_HOST |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
970 <LI>REMOTE_IDENT |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
971 <LI>REMOTE_USER |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
972 <LI>REQUEST_METHOD |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
973 <LI>SCRIPT_NAME |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
974 <LI>SERVER_NAME |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
975 <LI>SERVER_PORT |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
976 <LI>SERVER_PROTOCOL |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
977 <LI>SERVER_ROOT |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
978 <LI>SERVER_SOFTWARE |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
979 </UL> |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
parents:
diff
changeset
|
980 In addition, HTTP headers sent by the server may be passed in the |
|
978285986b2c
fix: issue2551193 - Fix roundup for removal of cgi and cgitb ...
John Rouillard <rouilj@ieee.org>
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981 environment as well. Here are some common variable names: |
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982 <UL> |
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983 <LI>HTTP_ACCEPT |
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984 <LI>HTTP_CONNECTION |
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985 <LI>HTTP_HOST |
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986 <LI>HTTP_PRAGMA |
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987 <LI>HTTP_REFERER |
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988 <LI>HTTP_USER_AGENT |
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989 </UL> |
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990 """) |
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991 |
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992 |
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993 # Utilities |
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994 # ========= |
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995 |
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996 def valid_boundary(s): |
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997 import re |
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998 if isinstance(s, bytes): |
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999 _vb_pattern = b"^[ -~]{0,200}[!-~]$" |
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1000 else: |
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1001 _vb_pattern = "^[ -~]{0,200}[!-~]$" |
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1002 return re.match(_vb_pattern, s) |
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1003 |
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1004 # Invoke mainline |
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1005 # =============== |
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1006 |
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1007 # Call test() when this file is run as a script (not imported as a module) |
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1008 if __name__ == '__main__': |
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1009 test() |