Mercurial > hg
annotate mercurial/hgweb/hgweb_mod.py @ 37093:db114320df7e
hgweb: don't responsd to api requests unless feature is enabled
Per discussion at https://phab.mercurial-scm.org/D2834, new URLs
in hgweb can conflict with subrepos and virtual repos. This may prevent
access to repos in certain paths or having certain names.
Until we have a workaround for this, let's not serve requests for
"api/" URLs unless the feature is enabled.
Differential Revision: https://phab.mercurial-scm.org/D2936
author | Gregory Szorc <gregory.szorc@gmail.com> |
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date | Fri, 23 Mar 2018 11:20:13 -0700 |
parents | 1cfef5693203 |
children | 307ee8883975 |
rev | line source |
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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 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 contextlib |
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12 import os |
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13 |
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14 from .common import ( |
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15 ErrorResponse, |
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16 HTTP_BAD_REQUEST, |
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17 cspvalues, |
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18 permhooks, |
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19 statusmessage, |
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20 ) |
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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 formatter, |
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26 hg, |
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27 hook, |
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28 profiling, |
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29 pycompat, |
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30 repoview, |
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31 templatefilters, |
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32 templater, |
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33 ui as uimod, |
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34 util, |
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35 wireprotoserver, |
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36 ) |
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37 |
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38 from . import ( |
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39 request as requestmod, |
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40 webcommands, |
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41 webutil, |
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42 wsgicgi, |
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43 ) |
138 | 44 |
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45 archivespecs = util.sortdict(( |
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46 ('zip', ('application/zip', 'zip', '.zip', None)), |
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47 ('gz', ('application/x-gzip', 'tgz', '.tar.gz', None)), |
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48 ('bz2', ('application/x-bzip2', 'tbz2', '.tar.bz2', None)), |
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49 )) |
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50 |
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51 def getstyle(req, configfn, templatepath): |
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52 styles = ( |
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53 req.qsparams.get('style', None), |
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54 configfn('web', 'style'), |
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55 'paper', |
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56 ) |
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57 return styles, templater.stylemap(styles, templatepath) |
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58 |
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59 def makebreadcrumb(url, prefix=''): |
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60 '''Return a 'URL breadcrumb' list |
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61 |
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62 A 'URL breadcrumb' is a list of URL-name pairs, |
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63 corresponding to each of the path items on a URL. |
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64 This can be used to create path navigation entries. |
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65 ''' |
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66 if url.endswith('/'): |
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67 url = url[:-1] |
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68 if prefix: |
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69 url = '/' + prefix + url |
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70 relpath = url |
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71 if relpath.startswith('/'): |
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72 relpath = relpath[1:] |
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73 |
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74 breadcrumb = [] |
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75 urlel = url |
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76 pathitems = [''] + relpath.split('/') |
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77 for pathel in reversed(pathitems): |
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78 if not pathel or not urlel: |
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79 break |
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80 breadcrumb.append({'url': urlel, 'name': pathel}) |
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81 urlel = os.path.dirname(urlel) |
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82 return reversed(breadcrumb) |
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83 |
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84 class requestcontext(object): |
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85 """Holds state/context for an individual request. |
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86 |
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87 Servers can be multi-threaded. Holding state on the WSGI application |
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88 is prone to race conditions. Instances of this class exist to hold |
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89 mutable and race-free state for requests. |
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90 """ |
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91 def __init__(self, app, repo, req, res): |
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92 self.repo = repo |
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93 self.reponame = app.reponame |
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94 self.req = req |
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95 self.res = res |
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96 |
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97 self.archivespecs = archivespecs |
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98 |
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99 self.maxchanges = self.configint('web', 'maxchanges') |
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100 self.stripecount = self.configint('web', 'stripes') |
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101 self.maxshortchanges = self.configint('web', 'maxshortchanges') |
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102 self.maxfiles = self.configint('web', 'maxfiles') |
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103 self.allowpull = self.configbool('web', 'allow-pull') |
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104 |
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105 # we use untrusted=False to prevent a repo owner from using |
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106 # web.templates in .hg/hgrc to get access to any file readable |
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107 # by the user running the CGI script |
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108 self.templatepath = self.config('web', 'templates', untrusted=False) |
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109 |
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110 # This object is more expensive to build than simple config values. |
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111 # It is shared across requests. The app will replace the object |
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112 # if it is updated. Since this is a reference and nothing should |
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113 # modify the underlying object, it should be constant for the lifetime |
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114 # of the request. |
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115 self.websubtable = app.websubtable |
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116 |
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117 self.csp, self.nonce = cspvalues(self.repo.ui) |
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118 |
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119 # Trust the settings from the .hg/hgrc files by default. |
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120 def config(self, section, name, default=uimod._unset, untrusted=True): |
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121 return self.repo.ui.config(section, name, default, |
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122 untrusted=untrusted) |
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123 |
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124 def configbool(self, section, name, default=uimod._unset, untrusted=True): |
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125 return self.repo.ui.configbool(section, name, default, |
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126 untrusted=untrusted) |
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127 |
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128 def configint(self, section, name, default=uimod._unset, untrusted=True): |
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129 return self.repo.ui.configint(section, name, default, |
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130 untrusted=untrusted) |
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131 |
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132 def configlist(self, section, name, default=uimod._unset, untrusted=True): |
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133 return self.repo.ui.configlist(section, name, default, |
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134 untrusted=untrusted) |
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135 |
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136 def archivelist(self, nodeid): |
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137 allowed = self.configlist('web', 'allow_archive') |
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138 for typ, spec in self.archivespecs.iteritems(): |
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139 if typ in allowed or self.configbool('web', 'allow%s' % typ): |
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140 yield {'type': typ, 'extension': spec[2], 'node': nodeid} |
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141 |
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142 def templater(self, req): |
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143 # determine scheme, port and server name |
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144 # this is needed to create absolute urls |
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145 logourl = self.config('web', 'logourl') |
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146 logoimg = self.config('web', 'logoimg') |
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147 staticurl = (self.config('web', 'staticurl') |
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148 or req.apppath + '/static/') |
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149 if not staticurl.endswith('/'): |
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150 staticurl += '/' |
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151 |
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152 # some functions for the templater |
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153 |
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154 def motd(**map): |
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155 yield self.config('web', 'motd') |
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156 |
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157 # figure out which style to use |
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158 |
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159 vars = {} |
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160 styles, (style, mapfile) = getstyle(req, self.config, |
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161 self.templatepath) |
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162 if style == styles[0]: |
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163 vars['style'] = style |
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164 |
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165 sessionvars = webutil.sessionvars(vars, '?') |
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166 |
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167 if not self.reponame: |
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168 self.reponame = (self.config('web', 'name', '') |
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169 or req.reponame |
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170 or req.apppath |
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171 or self.repo.root) |
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172 |
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173 def websubfilter(text): |
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174 return templatefilters.websub(text, self.websubtable) |
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175 |
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176 # create the templater |
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177 # TODO: export all keywords: defaults = templatekw.keywords.copy() |
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178 defaults = { |
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179 'url': req.apppath + '/', |
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180 'logourl': logourl, |
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181 'logoimg': logoimg, |
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182 'staticurl': staticurl, |
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183 'urlbase': req.advertisedbaseurl, |
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184 'repo': self.reponame, |
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185 'encoding': encoding.encoding, |
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186 'motd': motd, |
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187 'sessionvars': sessionvars, |
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188 'pathdef': makebreadcrumb(req.apppath), |
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189 'style': style, |
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190 'nonce': self.nonce, |
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191 } |
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192 tres = formatter.templateresources(self.repo.ui, self.repo) |
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193 tmpl = templater.templater.frommapfile(mapfile, |
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194 filters={'websub': websubfilter}, |
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195 defaults=defaults, |
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196 resources=tres) |
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197 return tmpl |
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198 |
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199 def sendtemplate(self, name, **kwargs): |
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200 """Helper function to send a response generated from a template.""" |
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201 kwargs = pycompat.byteskwargs(kwargs) |
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202 self.res.setbodygen(self.tmpl.generate(name, kwargs)) |
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203 return self.res.sendresponse() |
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204 |
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205 class hgweb(object): |
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206 """HTTP server for individual repositories. |
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207 |
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208 Instances of this class serve HTTP responses for a particular |
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209 repository. |
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210 |
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211 Instances are typically used as WSGI applications. |
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212 |
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213 Some servers are multi-threaded. On these servers, there may |
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214 be multiple active threads inside __call__. |
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215 """ |
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216 def __init__(self, repo, name=None, baseui=None): |
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217 if isinstance(repo, str): |
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218 if baseui: |
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219 u = baseui.copy() |
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220 else: |
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221 u = uimod.ui.load() |
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222 r = hg.repository(u, repo) |
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224 # we trust caller to give us a private copy |
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225 r = repo |
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226 |
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227 r.ui.setconfig('ui', 'report_untrusted', 'off', 'hgweb') |
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228 r.baseui.setconfig('ui', 'report_untrusted', 'off', 'hgweb') |
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229 r.ui.setconfig('ui', 'nontty', 'true', 'hgweb') |
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230 r.baseui.setconfig('ui', 'nontty', 'true', 'hgweb') |
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231 # resolve file patterns relative to repo root |
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232 r.ui.setconfig('ui', 'forcecwd', r.root, 'hgweb') |
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233 r.baseui.setconfig('ui', 'forcecwd', r.root, 'hgweb') |
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234 # displaying bundling progress bar while serving feel wrong and may |
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235 # break some wsgi implementation. |
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236 r.ui.setconfig('progress', 'disable', 'true', 'hgweb') |
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237 r.baseui.setconfig('progress', 'disable', 'true', 'hgweb') |
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238 self._repos = [hg.cachedlocalrepo(self._webifyrepo(r))] |
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239 self._lastrepo = self._repos[0] |
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240 hook.redirect(True) |
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241 self.reponame = name |
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242 |
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243 def _webifyrepo(self, repo): |
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244 repo = getwebview(repo) |
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245 self.websubtable = webutil.getwebsubs(repo) |
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246 return repo |
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247 |
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248 @contextlib.contextmanager |
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249 def _obtainrepo(self): |
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250 """Obtain a repo unique to the caller. |
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251 |
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252 Internally we maintain a stack of cachedlocalrepo instances |
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253 to be handed out. If one is available, we pop it and return it, |
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254 ensuring it is up to date in the process. If one is not available, |
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255 we clone the most recently used repo instance and return it. |
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256 |
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257 It is currently possible for the stack to grow without bounds |
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258 if the server allows infinite threads. However, servers should |
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259 have a thread limit, thus establishing our limit. |
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260 """ |
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261 if self._repos: |
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262 cached = self._repos.pop() |
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263 r, created = cached.fetch() |
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264 else: |
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265 cached = self._lastrepo.copy() |
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266 r, created = cached.fetch() |
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267 if created: |
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268 r = self._webifyrepo(r) |
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269 |
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270 self._lastrepo = cached |
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271 self.mtime = cached.mtime |
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272 try: |
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273 yield r |
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274 finally: |
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275 self._repos.append(cached) |
258 | 276 |
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277 def run(self): |
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278 """Start a server from CGI environment. |
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279 |
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280 Modern servers should be using WSGI and should avoid this |
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281 method, if possible. |
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282 """ |
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283 if not encoding.environ.get('GATEWAY_INTERFACE', |
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284 '').startswith("CGI/1."): |
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285 raise RuntimeError("This function is only intended to be " |
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286 "called while running as a CGI script.") |
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287 wsgicgi.launch(self) |
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288 |
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289 def __call__(self, env, respond): |
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290 """Run the WSGI application. |
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291 |
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292 This may be called by multiple threads. |
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293 """ |
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294 req = requestmod.parserequestfromenv(env) |
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295 res = requestmod.wsgiresponse(req, respond) |
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296 |
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297 return self.run_wsgi(req, res) |
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298 |
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299 def run_wsgi(self, req, res): |
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300 """Internal method to run the WSGI application. |
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301 |
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302 This is typically only called by Mercurial. External consumers |
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303 should be using instances of this class as the WSGI application. |
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304 """ |
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305 with self._obtainrepo() as repo: |
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306 profile = repo.ui.configbool('profiling', 'enabled') |
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307 with profiling.profile(repo.ui, enabled=profile): |
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308 for r in self._runwsgi(req, res, repo): |
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309 yield r |
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310 |
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311 def _runwsgi(self, req, res, repo): |
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312 rctx = requestcontext(self, repo, req, res) |
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313 |
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314 # This state is global across all threads. |
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315 encoding.encoding = rctx.config('web', 'encoding') |
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316 rctx.repo.ui.environ = req.rawenv |
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317 |
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318 if rctx.csp: |
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319 # hgwebdir may have added CSP header. Since we generate our own, |
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320 # replace it. |
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321 res.headers['Content-Security-Policy'] = rctx.csp |
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322 |
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323 # /api/* is reserved for various API implementations. Dispatch |
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324 # accordingly. But URL paths can conflict with subrepos and virtual |
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325 # repos in hgwebdir. So until we have a workaround for this, only |
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326 # expose the URLs if the feature is enabled. |
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327 apienabled = rctx.repo.ui.configbool('experimental', 'web.apiserver') |
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328 if apienabled and req.dispatchparts and req.dispatchparts[0] == b'api': |
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329 wireprotoserver.handlewsgiapirequest(rctx, req, res, |
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330 self.check_perm) |
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331 return res.sendresponse() |
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332 |
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333 handled = wireprotoserver.handlewsgirequest( |
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334 rctx, req, res, self.check_perm) |
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335 if handled: |
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336 return res.sendresponse() |
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337 |
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338 # Old implementations of hgweb supported dispatching the request via |
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339 # the initial query string parameter instead of using PATH_INFO. |
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340 # If PATH_INFO is present (signaled by ``req.dispatchpath`` having |
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341 # a value), we use it. Otherwise fall back to the query string. |
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342 if req.dispatchpath is not None: |
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343 query = req.dispatchpath |
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344 else: |
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345 query = req.querystring.partition('&')[0].partition(';')[0] |
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346 |
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347 # translate user-visible url structure to internal structure |
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348 |
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349 args = query.split('/', 2) |
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350 if 'cmd' not in req.qsparams and args and args[0]: |
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351 cmd = args.pop(0) |
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352 style = cmd.rfind('-') |
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353 if style != -1: |
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354 req.qsparams['style'] = cmd[:style] |
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355 cmd = cmd[style + 1:] |
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356 |
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357 # avoid accepting e.g. style parameter as command |
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358 if util.safehasattr(webcommands, cmd): |
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359 req.qsparams['cmd'] = cmd |
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360 |
7287
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361 if cmd == 'static': |
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362 req.qsparams['file'] = '/'.join(args) |
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363 else: |
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parents:
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diff
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|
364 if args and args[0]: |
25777
1c2a8db33b8f
hgweb: allow symbolic revisions with forward slashes in urls
Anton Shestakov <av6@dwimlabs.net>
parents:
25720
diff
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|
365 node = args.pop(0).replace('%2F', '/') |
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366 req.qsparams['node'] = node |
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367 if args: |
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368 if 'file' in req.qsparams: |
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369 del req.qsparams['file'] |
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370 for a in args: |
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371 req.qsparams.add('file', a) |
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372 |
36814
f9078c6caeb6
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parents:
36812
diff
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|
373 ua = req.headers.get('User-Agent', '') |
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374 if cmd == 'rev' and 'mercurial' in ua: |
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diff
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375 req.qsparams['style'] = 'raw' |
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376 |
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parents:
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diff
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|
377 if cmd == 'archive': |
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|
378 fn = req.qsparams['node'] |
26136
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hgweb: move archive related attributes to requestcontext
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parents:
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diff
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|
379 for type_, spec in rctx.archivespecs.iteritems(): |
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380 ext = spec[2] |
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381 if fn.endswith(ext): |
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|
382 req.qsparams['node'] = fn[:-len(ext)] |
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|
383 req.qsparams['type'] = type_ |
35984
cdc93fe1da77
wireprotoserver: move protocol parsing and dispatch out of hgweb
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parents:
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diff
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|
384 else: |
36865
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385 cmd = req.qsparams.get('cmd', '') |
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386 |
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diff
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387 # process the web interface request |
5599
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diff
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388 |
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389 try: |
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diff
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|
390 rctx.tmpl = rctx.templater(req) |
36989
de117f579431
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Yuya Nishihara <yuya@tcha.org>
parents:
36920
diff
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|
391 ctype = rctx.tmpl.render('mimetype', |
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diff
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|
392 {'encoding': encoding.encoding}) |
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diff
changeset
|
393 |
7562
b663b5563de7
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Mark Edgington <edgimar@gmail.com>
parents:
7396
diff
changeset
|
394 # check read permissions non-static content |
b663b5563de7
hgweb: allow static content when deny_read denies access
Mark Edgington <edgimar@gmail.com>
parents:
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diff
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|
395 if cmd != 'static': |
36877
02bea04b4c54
hgweb: transition permissions hooks to modern request type (API)
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parents:
36876
diff
changeset
|
396 self.check_perm(rctx, req, None) |
7336
2dc868712dcc
hgweb: support for deny_read/allow_read options
Mark Edgington <edgimar@gmail.com>
parents:
7311
diff
changeset
|
397 |
6149
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diff
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|
398 if cmd == '': |
37020
16bbb15406c9
hgweb: evaluate the "default" value as template
Yuya Nishihara <yuya@tcha.org>
parents:
37019
diff
changeset
|
399 req.qsparams['cmd'] = rctx.tmpl.render('default', {}) |
36865
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diff
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|
400 cmd = req.qsparams['cmd'] |
5890
a0e20a5eba3c
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parents:
5889
diff
changeset
|
401 |
30766
d7bf7d2bd5ab
hgweb: support Content Security Policy
Gregory Szorc <gregory.szorc@gmail.com>
parents:
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diff
changeset
|
402 # Don't enable caching if using a CSP nonce because then it wouldn't |
d7bf7d2bd5ab
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diff
changeset
|
403 # be a nonce. |
34605
625202a44d88
configitems: register the 'web.cache' config
Boris Feld <boris.feld@octobus.net>
parents:
34602
diff
changeset
|
404 if rctx.configbool('web', 'cache') and not rctx.nonce: |
36869
7ad6a275316f
hgweb: inline caching() and port to modern mechanisms
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parents:
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diff
changeset
|
405 tag = 'W/"%d"' % self.mtime |
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parents:
36868
diff
changeset
|
406 if req.headers.get('If-None-Match') == tag: |
36878
ccb70a77f746
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Gregory Szorc <gregory.szorc@gmail.com>
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diff
changeset
|
407 res.status = '304 Not Modified' |
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diff
changeset
|
408 # Response body not allowed on 304. |
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diff
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|
409 res.setbodybytes('') |
ccb70a77f746
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diff
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|
410 return res.sendresponse() |
36869
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diff
changeset
|
411 |
7ad6a275316f
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diff
changeset
|
412 res.headers['ETag'] = tag |
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diff
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|
413 |
6149
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parents:
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diff
changeset
|
414 if cmd not in webcommands.__all__: |
6368
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diff
changeset
|
415 msg = 'no such method: %s' % cmd |
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diff
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|
416 raise ErrorResponse(HTTP_BAD_REQUEST, msg) |
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diff
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|
417 else: |
36870
1f42d621f090
hgweb: support using new response object for web commands
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36869
diff
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|
418 # Set some globals appropriate for web handlers. Commands can |
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|
419 # override easily enough. |
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|
420 res.status = '200 Script output follows' |
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diff
changeset
|
421 res.headers['Content-Type'] = ctype |
36887
4daa22071d5d
hgweb: stop passing req and tmpl into @webcommand functions (API)
Gregory Szorc <gregory.szorc@gmail.com>
parents:
36883
diff
changeset
|
422 return getattr(webcommands, cmd)(rctx) |
5600
9d900f7282e6
hgweb: explicitly pass around the templater
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parents:
5599
diff
changeset
|
423 |
25660
328739ea70c3
global: mass rewrite to use modern exception syntax
Gregory Szorc <gregory.szorc@gmail.com>
parents:
25565
diff
changeset
|
424 except (error.LookupError, error.RepoLookupError) as err: |
36258
af0a19d8812b
py3: get bytes-repr of network errors portably
Augie Fackler <augie@google.com>
parents:
35986
diff
changeset
|
425 msg = pycompat.bytestr(err) |
18855
50c922c1b514
hgweb: show correct error message for i18n environment
Takumi IINO <trot.thunder@gmail.com>
parents:
18522
diff
changeset
|
426 if (util.safehasattr(err, 'name') and |
50c922c1b514
hgweb: show correct error message for i18n environment
Takumi IINO <trot.thunder@gmail.com>
parents:
18522
diff
changeset
|
427 not isinstance(err, error.ManifestLookupError)): |
6368
2c370f08c486
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parents:
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diff
changeset
|
428 msg = 'revision not found: %s' % err.name |
36879
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diff
changeset
|
429 |
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|
430 res.status = '404 Not Found' |
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|
431 res.headers['Content-Type'] = ctype |
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|
432 return rctx.sendtemplate('error', error=msg) |
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diff
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|
433 except (error.RepoError, error.RevlogError) as e: |
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diff
changeset
|
434 res.status = '500 Internal Server Error' |
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|
435 res.headers['Content-Type'] = ctype |
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|
436 return rctx.sendtemplate('error', error=pycompat.bytestr(e)) |
36879
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|
437 except ErrorResponse as e: |
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diff
changeset
|
438 res.status = statusmessage(e.code, pycompat.bytestr(e)) |
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|
439 res.headers['Content-Type'] = ctype |
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diff
changeset
|
440 return rctx.sendtemplate('error', error=pycompat.bytestr(e)) |
5599
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parents:
5598
diff
changeset
|
441 |
26134
e0a6908f066f
hgweb: establish class for holding per request context
Gregory Szorc <gregory.szorc@gmail.com>
parents:
26133
diff
changeset
|
442 def check_perm(self, rctx, req, op): |
22200
b27c3beaaf30
cleanup: avoid local vars shadowing imports
Mads Kiilerich <madski@unity3d.com>
parents:
22087
diff
changeset
|
443 for permhook in permhooks: |
26134
e0a6908f066f
hgweb: establish class for holding per request context
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parents:
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diff
changeset
|
444 permhook(rctx, req, op) |
26208
c87566ac3c49
hgweb: extract _getview to own function
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parents:
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diff
changeset
|
445 |
c87566ac3c49
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diff
changeset
|
446 def getwebview(repo): |
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diff
changeset
|
447 """The 'web.view' config controls changeset filter to hgweb. Possible |
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diff
changeset
|
448 values are ``served``, ``visible`` and ``all``. Default is ``served``. |
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diff
changeset
|
449 The ``served`` filter only shows changesets that can be pulled from the |
c87566ac3c49
hgweb: extract _getview to own function
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parents:
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diff
changeset
|
450 hgweb instance. The``visible`` filter includes secret changesets but |
c87566ac3c49
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diff
changeset
|
451 still excludes "hidden" one. |
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diff
changeset
|
452 |
c87566ac3c49
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diff
changeset
|
453 See the repoview module for details. |
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diff
changeset
|
454 |
c87566ac3c49
hgweb: extract _getview to own function
Gregory Szorc <gregory.szorc@gmail.com>
parents:
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455 The option has been around undocumented since Mercurial 2.5, but no |
c87566ac3c49
hgweb: extract _getview to own function
Gregory Szorc <gregory.szorc@gmail.com>
parents:
26207
diff
changeset
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456 user ever asked about it. So we better keep it undocumented for now.""" |
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configitems: register the 'web.view' config
Boris Feld <boris.feld@octobus.net>
parents:
34515
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457 # experimental config: web.view |
bf2389b1f15e
configitems: register the 'web.view' config
Boris Feld <boris.feld@octobus.net>
parents:
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458 viewconfig = repo.ui.config('web', 'view', untrusted=True) |
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c87566ac3c49
hgweb: extract _getview to own function
Gregory Szorc <gregory.szorc@gmail.com>
parents:
26207
diff
changeset
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459 if viewconfig == 'all': |
c87566ac3c49
hgweb: extract _getview to own function
Gregory Szorc <gregory.szorc@gmail.com>
parents:
26207
diff
changeset
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460 return repo.unfiltered() |
c87566ac3c49
hgweb: extract _getview to own function
Gregory Szorc <gregory.szorc@gmail.com>
parents:
26207
diff
changeset
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461 elif viewconfig in repoview.filtertable: |
c87566ac3c49
hgweb: extract _getview to own function
Gregory Szorc <gregory.szorc@gmail.com>
parents:
26207
diff
changeset
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462 return repo.filtered(viewconfig) |
c87566ac3c49
hgweb: extract _getview to own function
Gregory Szorc <gregory.szorc@gmail.com>
parents:
26207
diff
changeset
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463 else: |
c87566ac3c49
hgweb: extract _getview to own function
Gregory Szorc <gregory.szorc@gmail.com>
parents:
26207
diff
changeset
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464 return repo.filtered('served') |