Mercurial > public > mercurial-scm > hg

annotate mercurial/hgweb/request.py @ 9694:8269fe2d48f6

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hgweb: send proper error messages to the client Fixes a bug in protocol which caused an exception during exception handling in some cases on Windows. Also makes sure the server error message is correctly propagated to the client, instead of being thrown away.
author Sune Foldager <cryo@cyanite.org>
date Mon, 02 Nov 2009 10:20:04 +0100
parents 46293a0c7e9f
children 5eae671c0b57
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1 # hgweb/request.py - An http request from either CGI or the standalone server.
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2 #
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3 # Copyright 21 May 2005 - (c) 2005 Jake Edge <jake@edge2.net>
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4 # Copyright 2005, 2006 Matt Mackall <mpm@selenic.com>
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5 #
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6 # This software may be used and distributed according to the terms of the
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7 # GNU General Public License version 2, incorporated herein by reference.
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8
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9 import socket, cgi, errno
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10 from mercurial import util
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11 from common import ErrorResponse, statusmessage
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12
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13 shortcuts = {
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14 'cl': [('cmd', ['changelog']), ('rev', None)],
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15 'sl': [('cmd', ['shortlog']), ('rev', None)],
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16 'cs': [('cmd', ['changeset']), ('node', None)],
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17 'f': [('cmd', ['file']), ('filenode', None)],
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18 'fl': [('cmd', ['filelog']), ('filenode', None)],
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19 'fd': [('cmd', ['filediff']), ('node', None)],
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20 'fa': [('cmd', ['annotate']), ('filenode', None)],
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21 'mf': [('cmd', ['manifest']), ('manifest', None)],
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22 'ca': [('cmd', ['archive']), ('node', None)],
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23 'tags': [('cmd', ['tags'])],
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24 'tip': [('cmd', ['changeset']), ('node', ['tip'])],
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25 'static': [('cmd', ['static']), ('file', None)]
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26 }
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27
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28 def expand(form):
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29 for k in shortcuts.iterkeys():
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30 if k in form:
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31 for name, value in shortcuts[k]:
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32 if value is None:
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33 value = form[k]
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34 form[name] = value
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35 del form[k]
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36 return form
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37
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38 class wsgirequest(object):
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39 def __init__(self, wsgienv, start_response):
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40 version = wsgienv['wsgi.version']
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41 if (version < (1, 0)) or (version >= (2, 0)):
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42 raise RuntimeError("Unknown and unsupported WSGI version %d.%d"
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43 % version)
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44 self.inp = wsgienv['wsgi.input']
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45 self.err = wsgienv['wsgi.errors']
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46 self.threaded = wsgienv['wsgi.multithread']
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47 self.multiprocess = wsgienv['wsgi.multiprocess']
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48 self.run_once = wsgienv['wsgi.run_once']
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49 self.env = wsgienv
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50 self.form = expand(cgi.parse(self.inp, self.env, keep_blank_values=1))
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51 self._start_response = start_response
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52 self.server_write = None
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53 self.headers = []
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54
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55 def __iter__(self):
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56 return iter([])
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57
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58 def read(self, count=-1):
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59 return self.inp.read(count)
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60
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61 def drain(self):
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62 '''need to read all data from request, httplib is half-duplex'''
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63 length = int(self.env.get('CONTENT_LENGTH', 0))
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64 for s in util.filechunkiter(self.inp, limit=length):
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65 pass
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66
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67 def respond(self, status, type=None, filename=None, length=0):
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68 if self._start_response is not None:
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69
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70 self.httphdr(type, filename, length)
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71 if not self.headers:
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72 raise RuntimeError("request.write called before headers sent")
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73
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74 for k, v in self.headers:
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75 if not isinstance(v, str):
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76 raise TypeError('header value must be string: %r' % v)
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77
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78 if isinstance(status, ErrorResponse):
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79 self.header(status.headers)
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80 status = statusmessage(status.code, status.message)
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81 elif status == 200:
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82 status = '200 Script output follows'
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83 elif isinstance(status, int):
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84 status = statusmessage(status)
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85
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86 self.server_write = self._start_response(status, self.headers)
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87 self._start_response = None
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88 self.headers = []
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89
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90 def write(self, thing):
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91 if hasattr(thing, "__iter__"):
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92 for part in thing:
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93 self.write(part)
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94 else:
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95 thing = str(thing)
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96 try:
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97 self.server_write(thing)
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98 except socket.error, inst:
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99 if inst[0] != errno.ECONNRESET:
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100 raise
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101
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102 def writelines(self, lines):
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103 for line in lines:
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104 self.write(line)
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105
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106 def flush(self):
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107 return None
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108
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109 def close(self):
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110 return None
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111
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112 def header(self, headers=[('Content-Type','text/html')]):
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113 self.headers.extend(headers)
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114
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115 def httphdr(self, type=None, filename=None, length=0, headers={}):
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116 headers = headers.items()
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117 if type is not None:
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118 headers.append(('Content-Type', type))
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119 if filename:
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120 filename = (filename.split('/')[-1]
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121 .replace('\\', '\\\\').replace('"', '\\"'))
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122 headers.append(('Content-Disposition',
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123 'inline; filename="%s"' % filename))
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124 if length:
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125 headers.append(('Content-Length', str(length)))
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126 self.header(headers)
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Dirkjan Ochtman <dirkjan@ochtman.nl>
parents: 5563
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127
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Dirkjan Ochtman <dirkjan@ochtman.nl>
parents: 5563
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128 def wsgiapplication(app_maker):
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parents: 5886
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129 '''For compatibility with old CGI scripts. A plain hgweb() or hgwebdir()
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parents: 5886
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130 can and should now be used as a WSGI application.'''
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Thomas Arendsen Hein <thomas@intevation.de>
parents: 5566
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131 application = app_maker()
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parents: 5566
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132 def run_wsgi(env, respond):
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parents: 5886
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133 return application(env, respond)
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parents: 5566
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134 return run_wsgi