Mercurial > hg
annotate mercurial/hgweb/server.py @ 43069:e554cfd93975
hgweb: use importlib.reload() if available
reload() was nuked in Python 3. We need to use importlib.reload()
instead.
But pyflakes isn't smart enough to detect our conditional usage, so
we allow this error.
Differential Revision: https://phab.mercurial-scm.org/D6992
author | Gregory Szorc <gregory.szorc@gmail.com> |
---|---|
date | Sat, 05 Oct 2019 17:44:54 -0400 |
parents | 6bbb12cba5a8 |
children | 2372284d9457 |
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1 # hgweb/server.py - The standalone hg web server. |
131 | 2 # |
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3 # Copyright 21 May 2005 - (c) 2005 Jake Edge <jake@edge2.net> |
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4 # Copyright 2005-2007 Matt Mackall <mpm@selenic.com> |
131 | 5 # |
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6 # This software may be used and distributed according to the terms of the |
10263 | 7 # GNU General Public License version 2 or any later version. |
131 | 8 |
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9 from __future__ import absolute_import |
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10 |
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11 import errno |
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12 import importlib |
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13 import os |
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14 import socket |
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15 import sys |
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16 import traceback |
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17 import wsgiref.validate |
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18 |
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19 from ..i18n import _ |
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20 |
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21 from .. import ( |
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22 encoding, |
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23 error, |
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24 pycompat, |
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25 util, |
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26 ) |
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27 |
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28 httpservermod = util.httpserver |
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29 socketserver = util.socketserver |
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30 urlerr = util.urlerr |
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31 urlreq = util.urlreq |
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32 |
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33 from . import ( |
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34 common, |
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35 ) |
138 | 36 |
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37 def _splitURI(uri): |
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38 """Return path and query that has been split from uri |
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39 |
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40 Just like CGI environment, the path is unquoted, the query is |
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41 not. |
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42 """ |
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43 if r'?' in uri: |
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44 path, query = uri.split(r'?', 1) |
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45 else: |
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46 path, query = uri, r'' |
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47 return urlreq.unquote(path), query |
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48 |
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49 class _error_logger(object): |
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50 def __init__(self, handler): |
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51 self.handler = handler |
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52 def flush(self): |
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53 pass |
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54 def write(self, str): |
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55 self.writelines(str.split('\n')) |
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56 def writelines(self, seq): |
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57 for msg in seq: |
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58 self.handler.log_error(r"HG error: %s", encoding.strfromlocal(msg)) |
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59 |
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60 class _httprequesthandler(httpservermod.basehttprequesthandler): |
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61 |
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62 url_scheme = 'http' |
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63 |
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64 @staticmethod |
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65 def preparehttpserver(httpserver, ui): |
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66 """Prepare .socket of new HTTPServer instance""" |
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67 |
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68 def __init__(self, *args, **kargs): |
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69 self.protocol_version = r'HTTP/1.1' |
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70 httpservermod.basehttprequesthandler.__init__(self, *args, **kargs) |
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71 |
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72 def _log_any(self, fp, format, *args): |
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73 fp.write(pycompat.sysbytes( |
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74 r"%s - - [%s] %s" % (self.client_address[0], |
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75 self.log_date_time_string(), |
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76 format % args)) + '\n') |
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77 fp.flush() |
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78 |
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79 def log_error(self, format, *args): |
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80 self._log_any(self.server.errorlog, format, *args) |
131 | 81 |
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82 def log_message(self, format, *args): |
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83 self._log_any(self.server.accesslog, format, *args) |
538 | 84 |
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85 def log_request(self, code=r'-', size=r'-'): |
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86 xheaders = [] |
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87 if util.safehasattr(self, 'headers'): |
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88 xheaders = [h for h in self.headers.items() |
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89 if h[0].startswith(r'x-')] |
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90 self.log_message(r'"%s" %s %s%s', |
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91 self.requestline, str(code), str(size), |
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92 r''.join([r' %s:%s' % h for h in sorted(xheaders)])) |
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93 |
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94 def do_write(self): |
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95 try: |
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96 self.do_hgweb() |
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97 except socket.error as inst: |
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98 if inst.errno != errno.EPIPE: |
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99 raise |
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100 |
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101 def do_POST(self): |
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102 try: |
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103 self.do_write() |
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104 except Exception as e: |
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105 # I/O below could raise another exception. So log the original |
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106 # exception first to ensure it is recorded. |
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107 if not (isinstance(e, (OSError, socket.error)) |
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108 and e.errno == errno.ECONNRESET): |
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109 tb = r"".join(traceback.format_exception(*sys.exc_info())) |
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110 # We need a native-string newline to poke in the log |
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111 # message, because we won't get a newline when using an |
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112 # r-string. This is the easy way out. |
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113 newline = chr(10) |
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114 self.log_error(r"Exception happened during processing " |
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115 r"request '%s':%s%s", self.path, newline, tb) |
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116 |
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117 self._start_response(r"500 Internal Server Error", []) |
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118 self._write(b"Internal Server Error") |
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119 self._done() |
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120 |
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121 def do_PUT(self): |
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122 self.do_POST() |
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123 |
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124 def do_GET(self): |
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125 self.do_POST() |
131 | 126 |
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127 def do_hgweb(self): |
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128 self.sent_headers = False |
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129 path, query = _splitURI(self.path) |
138 | 130 |
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131 # Ensure the slicing of path below is valid |
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132 if (path != self.server.prefix |
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133 and not path.startswith(self.server.prefix + b'/')): |
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134 self._start_response(pycompat.strurl(common.statusmessage(404)), |
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135 []) |
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136 if self.command == 'POST': |
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137 # Paranoia: tell the client we're going to close the |
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138 # socket so they don't try and reuse a socket that |
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139 # might have a POST body waiting to confuse us. We do |
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140 # this by directly munging self.saved_headers because |
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141 # self._start_response ignores Connection headers. |
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142 self.saved_headers = [(r'Connection', r'Close')] |
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143 self._write(b"Not Found") |
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144 self._done() |
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145 return |
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146 |
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147 env = {} |
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148 env[r'GATEWAY_INTERFACE'] = r'CGI/1.1' |
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149 env[r'REQUEST_METHOD'] = self.command |
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150 env[r'SERVER_NAME'] = self.server.server_name |
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151 env[r'SERVER_PORT'] = str(self.server.server_port) |
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152 env[r'REQUEST_URI'] = self.path |
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153 env[r'SCRIPT_NAME'] = pycompat.sysstr(self.server.prefix) |
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154 env[r'PATH_INFO'] = pycompat.sysstr(path[len(self.server.prefix):]) |
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155 env[r'REMOTE_HOST'] = self.client_address[0] |
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156 env[r'REMOTE_ADDR'] = self.client_address[0] |
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157 env[r'QUERY_STRING'] = query or r'' |
1579
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Remove tabs, and trailing whitespace from hgweb.py
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158 |
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|
159 if pycompat.ispy3: |
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160 if self.headers.get_content_type() is None: |
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161 env[r'CONTENT_TYPE'] = self.headers.get_default_type() |
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162 else: |
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163 env[r'CONTENT_TYPE'] = self.headers.get_content_type() |
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164 length = self.headers.get(r'content-length') |
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165 else: |
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166 if self.headers.typeheader is None: |
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167 env[r'CONTENT_TYPE'] = self.headers.type |
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168 else: |
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169 env[r'CONTENT_TYPE'] = self.headers.typeheader |
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170 length = self.headers.getheader(r'content-length') |
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171 if length: |
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172 env[r'CONTENT_LENGTH'] = length |
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Cleanup of whitespace, indentation and line continuation.
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173 for header in [h for h in self.headers.keys() |
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parents:
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|
174 if h.lower() not in (r'content-type', r'content-length')]: |
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175 hkey = r'HTTP_' + header.replace(r'-', r'_').upper() |
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176 hval = self.headers.get(header) |
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177 hval = hval.replace(r'\n', r'').strip() |
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178 if hval: |
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179 env[hkey] = hval |
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180 env[r'SERVER_PROTOCOL'] = self.request_version |
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181 env[r'wsgi.version'] = (1, 0) |
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182 env[r'wsgi.url_scheme'] = pycompat.sysstr(self.url_scheme) |
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183 if env.get(r'HTTP_EXPECT', '').lower() == '100-continue': |
13570
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parents:
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|
184 self.rfile = common.continuereader(self.rfile, self.wfile.write) |
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185 |
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186 env[r'wsgi.input'] = self.rfile |
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187 env[r'wsgi.errors'] = _error_logger(self) |
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|
188 env[r'wsgi.multithread'] = isinstance(self.server, |
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py3: conditionalize SocketServer import
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parents:
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diff
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|
189 socketserver.ThreadingMixIn) |
39834
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py3: conditionalize access to socketserver.ForkingMixIn
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diff
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|
190 if util.safehasattr(socketserver, 'ForkingMixIn'): |
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|
191 env[r'wsgi.multiprocess'] = isinstance(self.server, |
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|
192 socketserver.ForkingMixIn) |
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|
193 else: |
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|
194 env[r'wsgi.multiprocess'] = False |
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195 |
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196 env[r'wsgi.run_once'] = 0 |
601 | 197 |
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198 wsgiref.validate.check_environ(env) |
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199 |
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200 self.saved_status = None |
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201 self.saved_headers = [] |
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202 self.length = None |
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|
203 self._chunked = None |
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hgweb: all protocol functions have become generators
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|
204 for chunk in self.server.application(env, self._start_response): |
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|
205 self._write(chunk) |
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|
206 if not self.sent_headers: |
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|
207 self.send_headers() |
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208 self._done() |
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209 |
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210 def send_headers(self): |
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|
211 if not self.saved_status: |
8663
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wrap string literals in error messages
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|
212 raise AssertionError("Sending headers before " |
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|
213 "start_response() called") |
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214 saved_status = self.saved_status.split(None, 1) |
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215 saved_status[0] = int(saved_status[0]) |
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216 self.send_response(*saved_status) |
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217 self.length = None |
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218 self._chunked = False |
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219 for h in self.saved_headers: |
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220 self.send_header(*h) |
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221 if h[0].lower() == r'content-length': |
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Put support for persistent connections back in.
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|
222 self.length = int(h[1]) |
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serve: don't send any content headers with 304 responses
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|
223 if (self.length is None and |
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|
224 saved_status[0] != common.HTTP_NOT_MODIFIED): |
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225 self._chunked = (not self.close_connection and |
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226 self.request_version == r'HTTP/1.1') |
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227 if self._chunked: |
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228 self.send_header(r'Transfer-Encoding', r'chunked') |
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229 else: |
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230 self.send_header(r'Connection', r'close') |
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231 self.end_headers() |
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232 self.sent_headers = True |
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233 |
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234 def _start_response(self, http_status, headers, exc_info=None): |
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235 assert isinstance(http_status, str) |
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236 code, msg = http_status.split(None, 1) |
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237 code = int(code) |
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238 self.saved_status = http_status |
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239 bad_headers = (r'connection', r'transfer-encoding') |
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240 self.saved_headers = [h for h in headers |
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241 if h[0].lower() not in bad_headers] |
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242 return self._write |
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243 |
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244 def _write(self, data): |
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245 if not self.saved_status: |
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246 raise AssertionError("data written before start_response() called") |
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247 elif not self.sent_headers: |
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248 self.send_headers() |
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249 if self.length is not None: |
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250 if len(data) > self.length: |
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251 raise AssertionError("Content-length header sent, but more " |
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252 "bytes than specified are being written.") |
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253 self.length = self.length - len(data) |
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254 elif self._chunked and data: |
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255 data = '%x\r\n%s\r\n' % (len(data), data) |
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256 self.wfile.write(data) |
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257 self.wfile.flush() |
136 | 258 |
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259 def _done(self): |
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260 if self._chunked: |
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261 self.wfile.write('0\r\n\r\n') |
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262 self.wfile.flush() |
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263 |
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264 def version_string(self): |
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265 if self.server.serverheader: |
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266 return encoding.strfromlocal(self.server.serverheader) |
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267 return httpservermod.basehttprequesthandler.version_string(self) |
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268 |
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269 class _httprequesthandlerssl(_httprequesthandler): |
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270 """HTTPS handler based on Python's ssl module""" |
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271 |
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272 url_scheme = 'https' |
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273 |
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274 @staticmethod |
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275 def preparehttpserver(httpserver, ui): |
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276 try: |
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277 from .. import sslutil |
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278 sslutil.modernssl |
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279 except ImportError: |
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280 raise error.Abort(_("SSL support is unavailable")) |
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281 |
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282 certfile = ui.config('web', 'certificate') |
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283 |
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284 # These config options are currently only meant for testing. Use |
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285 # at your own risk. |
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286 cafile = ui.config('devel', 'servercafile') |
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287 reqcert = ui.configbool('devel', 'serverrequirecert') |
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288 |
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289 httpserver.socket = sslutil.wrapserversocket(httpserver.socket, |
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290 ui, |
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291 certfile=certfile, |
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292 cafile=cafile, |
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293 requireclientcert=reqcert) |
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294 |
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295 def setup(self): |
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296 self.connection = self.request |
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297 self.rfile = self.request.makefile(r"rb", self.rbufsize) |
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298 self.wfile = self.request.makefile(r"wb", self.wbufsize) |
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299 |
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300 try: |
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301 import threading |
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302 threading.activeCount() # silence pyflakes and bypass demandimport |
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303 _mixin = socketserver.ThreadingMixIn |
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304 except ImportError: |
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305 if util.safehasattr(os, "fork"): |
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306 _mixin = socketserver.ForkingMixIn |
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307 else: |
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308 class _mixin(object): |
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309 pass |
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310 |
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311 def openlog(opt, default): |
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312 if opt and opt != '-': |
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313 return open(opt, 'ab') |
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314 return default |
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315 |
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hgweb: fix the MRO in Python 3
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316 class MercurialHTTPServer(_mixin, httpservermod.httpserver, object): |
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317 |
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318 # SO_REUSEADDR has broken semantics on windows |
34645 | 319 if pycompat.iswindows: |
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320 allow_reuse_address = 0 |
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321 |
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322 def __init__(self, ui, app, addr, handler, **kwargs): |
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323 httpservermod.httpserver.__init__(self, addr, handler, **kwargs) |
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324 self.daemon_threads = True |
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325 self.application = app |
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326 |
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327 handler.preparehttpserver(self, ui) |
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328 |
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329 prefix = ui.config('web', 'prefix') |
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330 if prefix: |
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331 prefix = '/' + prefix.strip('/') |
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332 self.prefix = prefix |
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333 |
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334 alog = openlog(ui.config('web', 'accesslog'), ui.fout) |
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335 elog = openlog(ui.config('web', 'errorlog'), ui.ferr) |
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336 self.accesslog = alog |
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337 self.errorlog = elog |
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338 |
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339 self.addr, self.port = self.socket.getsockname()[0:2] |
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340 self.fqaddr = socket.getfqdn(addr[0]) |
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341 |
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342 self.serverheader = ui.config('web', 'server-header') |
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343 |
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344 class IPv6HTTPServer(MercurialHTTPServer): |
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345 address_family = getattr(socket, 'AF_INET6', None) |
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346 def __init__(self, *args, **kwargs): |
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347 if self.address_family is None: |
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348 raise error.RepoError(_('IPv6 is not available on this system')) |
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349 super(IPv6HTTPServer, self).__init__(*args, **kwargs) |
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350 |
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351 def create_server(ui, app): |
938 | 352 |
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353 if ui.config('web', 'certificate'): |
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354 handler = _httprequesthandlerssl |
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355 else: |
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356 handler = _httprequesthandler |
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357 |
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358 if ui.configbool('web', 'ipv6'): |
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359 cls = IPv6HTTPServer |
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360 else: |
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361 cls = MercurialHTTPServer |
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362 |
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363 # ugly hack due to python issue5853 (for threaded use) |
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364 try: |
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365 import mimetypes |
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366 mimetypes.init() |
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367 except UnicodeDecodeError: |
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368 # Python 2.x's mimetypes module attempts to decode strings |
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369 # from Windows' ANSI APIs as ascii (fail), then re-encode them |
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370 # as ascii (clown fail), because the default Python Unicode |
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371 # codec is hardcoded as ascii. |
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372 |
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373 sys.argv # unwrap demand-loader so that reload() works |
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374 # resurrect sys.setdefaultencoding() |
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375 try: |
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376 importlib.reload(sys) |
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377 except AttributeError: |
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378 reload(sys) |
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379 oldenc = sys.getdefaultencoding() |
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380 sys.setdefaultencoding("latin1") # or any full 8-bit encoding |
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381 mimetypes.init() |
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382 sys.setdefaultencoding(oldenc) |
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383 |
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384 address = ui.config('web', 'address') |
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385 port = util.getport(ui.config('web', 'port')) |
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386 try: |
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387 return cls(ui, app, (address, port), handler) |
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388 except socket.error as inst: |
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389 raise error.Abort(_("cannot start server at '%s:%d': %s") |
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390 % (address, port, encoding.strtolocal(inst.args[1]))) |