Mercurial > hg
annotate mercurial/hgweb/hgweb_mod.py @ 48946:642e31cb55f0
py3: use class X: instead of class X(object):
The inheritance from object is implied in Python 3. So this should
be equivalent.
This change was generated via an automated search and replace. So there
may have been some accidental changes.
Differential Revision: https://phab.mercurial-scm.org/D12352
author | Gregory Szorc <gregory.szorc@gmail.com> |
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date | Mon, 21 Feb 2022 13:08:28 -0700 |
parents | f254fc73d956 |
children | fda5a4b853ab |
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1 # hgweb/hgweb_mod.py - Web interface for a repository. |
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 Olivia Mackall <olivia@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 |
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10 import contextlib |
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11 import os |
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12 |
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13 from .common import ( |
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14 ErrorResponse, |
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15 HTTP_BAD_REQUEST, |
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16 cspvalues, |
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17 permhooks, |
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18 statusmessage, |
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19 ) |
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20 from ..pycompat import getattr |
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21 |
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22 from .. import ( |
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23 encoding, |
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24 error, |
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25 extensions, |
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26 formatter, |
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27 hg, |
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28 hook, |
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29 profiling, |
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30 pycompat, |
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31 registrar, |
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32 repoview, |
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33 templatefilters, |
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34 templater, |
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35 templateutil, |
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36 ui as uimod, |
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37 util, |
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38 wireprotoserver, |
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39 ) |
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40 |
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41 from . import ( |
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42 request as requestmod, |
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43 webcommands, |
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44 webutil, |
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45 wsgicgi, |
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46 ) |
138 | 47 |
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48 |
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49 def getstyle(req, configfn, templatepath): |
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50 styles = ( |
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51 req.qsparams.get(b'style', None), |
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52 configfn(b'web', b'style'), |
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53 b'paper', |
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54 ) |
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55 return styles, _stylemap(styles, templatepath) |
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56 |
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57 |
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58 def _stylemap(styles, path=None): |
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59 """Return path to mapfile for a given style. |
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60 |
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61 Searches mapfile in the following locations: |
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62 1. templatepath/style/map |
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63 2. templatepath/map-style |
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64 3. templatepath/map |
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65 """ |
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66 |
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67 for style in styles: |
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68 # only plain name is allowed to honor template paths |
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69 if ( |
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70 not style |
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71 or style in (pycompat.oscurdir, pycompat.ospardir) |
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72 or pycompat.ossep in style |
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73 or pycompat.osaltsep |
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74 and pycompat.osaltsep in style |
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75 ): |
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76 continue |
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77 locations = (os.path.join(style, b'map'), b'map-' + style, b'map') |
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78 |
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79 for location in locations: |
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80 mapfile, fp = templater.try_open_template(location, path) |
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81 if mapfile: |
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82 return style, mapfile, fp |
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83 |
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84 raise RuntimeError(b"No hgweb templates found in %r" % path) |
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85 |
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86 |
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87 def makebreadcrumb(url, prefix=b''): |
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88 """Return a 'URL breadcrumb' list |
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89 |
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90 A 'URL breadcrumb' is a list of URL-name pairs, |
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91 corresponding to each of the path items on a URL. |
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92 This can be used to create path navigation entries. |
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93 """ |
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94 if url.endswith(b'/'): |
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95 url = url[:-1] |
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96 if prefix: |
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97 url = b'/' + prefix + url |
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98 relpath = url |
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99 if relpath.startswith(b'/'): |
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100 relpath = relpath[1:] |
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101 |
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102 breadcrumb = [] |
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103 urlel = url |
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104 pathitems = [b''] + relpath.split(b'/') |
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105 for pathel in reversed(pathitems): |
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106 if not pathel or not urlel: |
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107 break |
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108 breadcrumb.append({b'url': urlel, b'name': pathel}) |
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109 urlel = os.path.dirname(urlel) |
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110 return templateutil.mappinglist(reversed(breadcrumb)) |
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111 |
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112 |
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113 class requestcontext: |
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114 """Holds state/context for an individual request. |
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115 |
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116 Servers can be multi-threaded. Holding state on the WSGI application |
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117 is prone to race conditions. Instances of this class exist to hold |
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118 mutable and race-free state for requests. |
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119 """ |
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120 |
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121 def __init__(self, app, repo, req, res): |
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122 self.repo = repo |
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123 self.reponame = app.reponame |
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124 self.req = req |
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125 self.res = res |
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126 |
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127 self.maxchanges = self.configint(b'web', b'maxchanges') |
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128 self.stripecount = self.configint(b'web', b'stripes') |
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129 self.maxshortchanges = self.configint(b'web', b'maxshortchanges') |
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130 self.maxfiles = self.configint(b'web', b'maxfiles') |
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131 self.allowpull = self.configbool(b'web', b'allow-pull') |
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132 |
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133 # we use untrusted=False to prevent a repo owner from using |
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134 # web.templates in .hg/hgrc to get access to any file readable |
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135 # by the user running the CGI script |
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136 self.templatepath = self.config(b'web', b'templates', untrusted=False) |
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137 |
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138 # This object is more expensive to build than simple config values. |
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139 # It is shared across requests. The app will replace the object |
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140 # if it is updated. Since this is a reference and nothing should |
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141 # modify the underlying object, it should be constant for the lifetime |
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142 # of the request. |
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143 self.websubtable = app.websubtable |
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144 |
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145 self.csp, self.nonce = cspvalues(self.repo.ui) |
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146 |
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147 # Trust the settings from the .hg/hgrc files by default. |
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148 def config(self, *args, **kwargs): |
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149 kwargs.setdefault('untrusted', True) |
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150 return self.repo.ui.config(*args, **kwargs) |
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151 |
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152 def configbool(self, *args, **kwargs): |
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153 kwargs.setdefault('untrusted', True) |
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154 return self.repo.ui.configbool(*args, **kwargs) |
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155 |
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156 def configint(self, *args, **kwargs): |
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157 kwargs.setdefault('untrusted', True) |
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158 return self.repo.ui.configint(*args, **kwargs) |
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159 |
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160 def configlist(self, *args, **kwargs): |
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161 kwargs.setdefault('untrusted', True) |
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162 return self.repo.ui.configlist(*args, **kwargs) |
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163 |
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164 def archivelist(self, nodeid): |
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165 return webutil.archivelist(self.repo.ui, nodeid) |
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166 |
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167 def templater(self, req): |
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168 # determine scheme, port and server name |
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169 # this is needed to create absolute urls |
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170 logourl = self.config(b'web', b'logourl') |
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171 logoimg = self.config(b'web', b'logoimg') |
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172 staticurl = ( |
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173 self.config(b'web', b'staticurl') |
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174 or req.apppath.rstrip(b'/') + b'/static/' |
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175 ) |
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176 if not staticurl.endswith(b'/'): |
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177 staticurl += b'/' |
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178 |
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179 # figure out which style to use |
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180 |
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181 vars = {} |
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182 styles, (style, mapfile, fp) = getstyle( |
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183 req, self.config, self.templatepath |
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184 ) |
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185 if style == styles[0]: |
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186 vars[b'style'] = style |
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187 |
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188 sessionvars = webutil.sessionvars(vars, b'?') |
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189 |
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190 if not self.reponame: |
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191 self.reponame = ( |
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192 self.config(b'web', b'name', b'') |
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193 or req.reponame |
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194 or req.apppath |
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195 or self.repo.root |
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196 ) |
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197 |
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198 filters = {} |
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199 templatefilter = registrar.templatefilter(filters) |
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200 |
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201 @templatefilter(b'websub', intype=bytes) |
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202 def websubfilter(text): |
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203 return templatefilters.websub(text, self.websubtable) |
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204 |
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205 # create the templater |
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206 # TODO: export all keywords: defaults = templatekw.keywords.copy() |
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207 defaults = { |
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208 b'url': req.apppath + b'/', |
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209 b'logourl': logourl, |
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210 b'logoimg': logoimg, |
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211 b'staticurl': staticurl, |
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212 b'urlbase': req.advertisedbaseurl, |
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213 b'repo': self.reponame, |
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214 b'encoding': encoding.encoding, |
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215 b'sessionvars': sessionvars, |
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216 b'pathdef': makebreadcrumb(req.apppath), |
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217 b'style': style, |
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218 b'nonce': self.nonce, |
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219 } |
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220 templatekeyword = registrar.templatekeyword(defaults) |
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221 |
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222 @templatekeyword(b'motd', requires=()) |
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223 def motd(context, mapping): |
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224 yield self.config(b'web', b'motd') |
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225 |
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226 tres = formatter.templateresources(self.repo.ui, self.repo) |
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227 return templater.templater.frommapfile( |
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228 mapfile, fp=fp, filters=filters, defaults=defaults, resources=tres |
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229 ) |
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230 |
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231 def sendtemplate(self, name, **kwargs): |
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232 """Helper function to send a response generated from a template.""" |
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233 kwargs = pycompat.byteskwargs(kwargs) |
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234 self.res.setbodygen(self.tmpl.generate(name, kwargs)) |
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235 return self.res.sendresponse() |
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236 |
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237 |
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238 class hgweb: |
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239 """HTTP server for individual repositories. |
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240 |
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241 Instances of this class serve HTTP responses for a particular |
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242 repository. |
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243 |
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244 Instances are typically used as WSGI applications. |
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245 |
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246 Some servers are multi-threaded. On these servers, there may |
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247 be multiple active threads inside __call__. |
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248 """ |
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249 |
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250 def __init__(self, repo, name=None, baseui=None): |
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251 if isinstance(repo, bytes): |
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252 if baseui: |
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253 u = baseui.copy() |
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254 else: |
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255 u = uimod.ui.load() |
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256 extensions.loadall(u) |
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257 extensions.populateui(u) |
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258 r = hg.repository(u, repo) |
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260 # we trust caller to give us a private copy |
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261 r = repo |
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262 |
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263 r.ui.setconfig(b'ui', b'report_untrusted', b'off', b'hgweb') |
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264 r.baseui.setconfig(b'ui', b'report_untrusted', b'off', b'hgweb') |
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265 r.ui.setconfig(b'ui', b'nontty', b'true', b'hgweb') |
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266 r.baseui.setconfig(b'ui', b'nontty', b'true', b'hgweb') |
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267 # resolve file patterns relative to repo root |
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268 r.ui.setconfig(b'ui', b'forcecwd', r.root, b'hgweb') |
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269 r.baseui.setconfig(b'ui', b'forcecwd', r.root, b'hgweb') |
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270 # it's unlikely that we can replace signal handlers in WSGI server, |
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271 # and mod_wsgi issues a big warning. a plain hgweb process (with no |
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272 # threading) could replace signal handlers, but we don't bother |
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273 # conditionally enabling it. |
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274 r.ui.setconfig(b'ui', b'signal-safe-lock', b'false', b'hgweb') |
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275 r.baseui.setconfig(b'ui', b'signal-safe-lock', b'false', b'hgweb') |
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276 # displaying bundling progress bar while serving feel wrong and may |
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277 # break some wsgi implementation. |
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278 r.ui.setconfig(b'progress', b'disable', b'true', b'hgweb') |
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279 r.baseui.setconfig(b'progress', b'disable', b'true', b'hgweb') |
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280 self._repos = [hg.cachedlocalrepo(self._webifyrepo(r))] |
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281 self._lastrepo = self._repos[0] |
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282 hook.redirect(True) |
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283 self.reponame = name |
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284 |
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285 def _webifyrepo(self, repo): |
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286 repo = getwebview(repo) |
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287 self.websubtable = webutil.getwebsubs(repo) |
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288 return repo |
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289 |
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290 @contextlib.contextmanager |
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291 def _obtainrepo(self): |
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292 """Obtain a repo unique to the caller. |
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293 |
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294 Internally we maintain a stack of cachedlocalrepo instances |
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295 to be handed out. If one is available, we pop it and return it, |
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296 ensuring it is up to date in the process. If one is not available, |
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297 we clone the most recently used repo instance and return it. |
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298 |
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299 It is currently possible for the stack to grow without bounds |
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300 if the server allows infinite threads. However, servers should |
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301 have a thread limit, thus establishing our limit. |
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302 """ |
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303 if self._repos: |
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304 cached = self._repos.pop() |
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305 r, created = cached.fetch() |
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306 else: |
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307 cached = self._lastrepo.copy() |
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308 r, created = cached.fetch() |
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309 if created: |
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310 r = self._webifyrepo(r) |
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311 |
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312 self._lastrepo = cached |
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313 self.mtime = cached.mtime |
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314 try: |
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315 yield r |
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316 finally: |
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317 self._repos.append(cached) |
258 | 318 |
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319 def run(self): |
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320 """Start a server from CGI environment. |
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321 |
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322 Modern servers should be using WSGI and should avoid this |
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323 method, if possible. |
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324 """ |
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325 if not encoding.environ.get(b'GATEWAY_INTERFACE', b'').startswith( |
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326 b"CGI/1." |
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327 ): |
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328 raise RuntimeError( |
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329 b"This function is only intended to be " |
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330 b"called while running as a CGI script." |
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331 ) |
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332 wsgicgi.launch(self) |
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333 |
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334 def __call__(self, env, respond): |
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335 """Run the WSGI application. |
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336 |
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337 This may be called by multiple threads. |
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338 """ |
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339 req = requestmod.parserequestfromenv(env) |
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340 res = requestmod.wsgiresponse(req, respond) |
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341 |
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342 return self.run_wsgi(req, res) |
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343 |
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344 def run_wsgi(self, req, res): |
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345 """Internal method to run the WSGI application. |
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346 |
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347 This is typically only called by Mercurial. External consumers |
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348 should be using instances of this class as the WSGI application. |
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349 """ |
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350 with self._obtainrepo() as repo: |
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351 profile = repo.ui.configbool(b'profiling', b'enabled') |
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352 with profiling.profile(repo.ui, enabled=profile): |
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353 for r in self._runwsgi(req, res, repo): |
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354 yield r |
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355 |
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356 def _runwsgi(self, req, res, repo): |
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357 rctx = requestcontext(self, repo, req, res) |
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358 |
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359 # This state is global across all threads. |
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360 encoding.encoding = rctx.config(b'web', b'encoding') |
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361 rctx.repo.ui.environ = req.rawenv |
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362 |
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363 if rctx.csp: |
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364 # hgwebdir may have added CSP header. Since we generate our own, |
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365 # replace it. |
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366 res.headers[b'Content-Security-Policy'] = rctx.csp |
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367 |
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368 handled = wireprotoserver.handlewsgirequest( |
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369 rctx, req, res, self.check_perm |
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370 ) |
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371 if handled: |
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372 return res.sendresponse() |
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373 |
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374 # Old implementations of hgweb supported dispatching the request via |
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375 # the initial query string parameter instead of using PATH_INFO. |
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376 # If PATH_INFO is present (signaled by ``req.dispatchpath`` having |
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377 # a value), we use it. Otherwise fall back to the query string. |
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378 if req.dispatchpath is not None: |
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379 query = req.dispatchpath |
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380 else: |
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381 query = req.querystring.partition(b'&')[0].partition(b';')[0] |
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382 |
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383 # translate user-visible url structure to internal structure |
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384 |
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385 args = query.split(b'/', 2) |
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386 if b'cmd' not in req.qsparams and args and args[0]: |
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387 cmd = args.pop(0) |
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388 style = cmd.rfind(b'-') |
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389 if style != -1: |
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390 req.qsparams[b'style'] = cmd[:style] |
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391 cmd = cmd[style + 1 :] |
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392 |
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393 # avoid accepting e.g. style parameter as command |
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394 if util.safehasattr(webcommands, cmd): |
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395 req.qsparams[b'cmd'] = cmd |
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396 |
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397 if cmd == b'static': |
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398 req.qsparams[b'file'] = b'/'.join(args) |
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399 else: |
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400 if args and args[0]: |
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401 node = args.pop(0).replace(b'%2F', b'/') |
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402 req.qsparams[b'node'] = node |
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403 if args: |
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404 if b'file' in req.qsparams: |
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405 del req.qsparams[b'file'] |
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406 for a in args: |
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407 req.qsparams.add(b'file', a) |
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408 |
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409 ua = req.headers.get(b'User-Agent', b'') |
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410 if cmd == b'rev' and b'mercurial' in ua: |
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411 req.qsparams[b'style'] = b'raw' |
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412 |
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413 if cmd == b'archive': |
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414 fn = req.qsparams[b'node'] |
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415 for type_, spec in webutil.archivespecs.items(): |
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416 ext = spec[2] |
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417 if fn.endswith(ext): |
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418 req.qsparams[b'node'] = fn[: -len(ext)] |
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419 req.qsparams[b'type'] = type_ |
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420 else: |
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421 cmd = req.qsparams.get(b'cmd', b'') |
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422 |
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423 # process the web interface request |
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diff
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424 |
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|
425 try: |
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|
426 rctx.tmpl = rctx.templater(req) |
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427 ctype = rctx.tmpl.render( |
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428 b'mimetype', {b'encoding': encoding.encoding} |
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|
429 ) |
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|
430 |
7562
b663b5563de7
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|
431 # check read permissions non-static content |
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432 if cmd != b'static': |
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|
433 self.check_perm(rctx, req, None) |
7336
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434 |
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435 if cmd == b'': |
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436 req.qsparams[b'cmd'] = rctx.tmpl.render(b'default', {}) |
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437 cmd = req.qsparams[b'cmd'] |
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|
438 |
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439 # Don't enable caching if using a CSP nonce because then it wouldn't |
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440 # be a nonce. |
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441 if rctx.configbool(b'web', b'cache') and not rctx.nonce: |
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442 tag = b'W/"%d"' % self.mtime |
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443 if req.headers.get(b'If-None-Match') == tag: |
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444 res.status = b'304 Not Modified' |
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445 # Content-Type may be defined globally. It isn't valid on a |
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446 # 304, so discard it. |
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447 try: |
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|
448 del res.headers[b'Content-Type'] |
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449 except KeyError: |
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450 pass |
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451 # Response body not allowed on 304. |
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452 res.setbodybytes(b'') |
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453 return res.sendresponse() |
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454 |
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455 res.headers[b'ETag'] = tag |
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456 |
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457 if cmd not in webcommands.__all__: |
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458 msg = b'no such method: %s' % cmd |
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459 raise ErrorResponse(HTTP_BAD_REQUEST, msg) |
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460 else: |
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461 # Set some globals appropriate for web handlers. Commands can |
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462 # override easily enough. |
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463 res.status = b'200 Script output follows' |
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464 res.headers[b'Content-Type'] = ctype |
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465 return getattr(webcommands, cmd)(rctx) |
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466 |
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467 except (error.LookupError, error.RepoLookupError) as err: |
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468 msg = pycompat.bytestr(err) |
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469 if util.safehasattr(err, b'name') and not isinstance( |
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470 err, error.ManifestLookupError |
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471 ): |
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472 msg = b'revision not found: %s' % err.name |
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473 |
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474 res.status = b'404 Not Found' |
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475 res.headers[b'Content-Type'] = ctype |
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476 return rctx.sendtemplate(b'error', error=msg) |
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477 except (error.RepoError, error.StorageError) as e: |
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478 res.status = b'500 Internal Server Error' |
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479 res.headers[b'Content-Type'] = ctype |
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480 return rctx.sendtemplate(b'error', error=pycompat.bytestr(e)) |
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481 except error.Abort as e: |
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482 res.status = b'403 Forbidden' |
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483 res.headers[b'Content-Type'] = ctype |
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484 return rctx.sendtemplate(b'error', error=e.message) |
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485 except ErrorResponse as e: |
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486 for k, v in e.headers: |
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487 res.headers[k] = v |
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488 res.status = statusmessage(e.code, pycompat.bytestr(e)) |
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489 res.headers[b'Content-Type'] = ctype |
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490 return rctx.sendtemplate(b'error', error=pycompat.bytestr(e)) |
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491 |
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492 def check_perm(self, rctx, req, op): |
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493 for permhook in permhooks: |
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494 permhook(rctx, req, op) |
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495 |
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496 |
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497 def getwebview(repo): |
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498 """The 'web.view' config controls changeset filter to hgweb. Possible |
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499 values are ``served``, ``visible`` and ``all``. Default is ``served``. |
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500 The ``served`` filter only shows changesets that can be pulled from the |
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501 hgweb instance. The``visible`` filter includes secret changesets but |
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502 still excludes "hidden" one. |
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503 |
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504 See the repoview module for details. |
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505 |
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506 The option has been around undocumented since Mercurial 2.5, but no |
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507 user ever asked about it. So we better keep it undocumented for now.""" |
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508 # experimental config: web.view |
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509 viewconfig = repo.ui.config(b'web', b'view', untrusted=True) |
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510 if viewconfig == b'all': |
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511 return repo.unfiltered() |
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512 elif viewconfig in repoview.filtertable: |
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513 return repo.filtered(viewconfig) |
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514 else: |
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515 return repo.filtered(b'served') |