Mercurial > hg
annotate mercurial/hgweb/hgweb_mod.py @ 26353:7c20d501709b
clone: fix over-indented continuation line
author | Sean Farley <sean@farley.io> |
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date | Thu, 24 Sep 2015 15:47:23 -0700 |
parents | 1ffc61c4e32e |
children | 4b0fc75f9403 |
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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 import contextlib |
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10 import os |
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11 from mercurial import ui, hg, hook, error, encoding, templater, util, repoview |
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12 from mercurial.templatefilters import websub |
26226 | 13 from common import ErrorResponse, permhooks, caching |
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14 from common import HTTP_OK, HTTP_NOT_MODIFIED, HTTP_BAD_REQUEST |
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15 from common import HTTP_NOT_FOUND, HTTP_SERVER_ERROR |
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16 from request import wsgirequest |
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17 import webcommands, protocol, webutil |
138 | 18 |
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19 perms = { |
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20 'changegroup': 'pull', |
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21 'changegroupsubset': 'pull', |
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22 'getbundle': 'pull', |
11370 | 23 'stream_out': 'pull', |
24 'listkeys': 'pull', | |
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25 'unbundle': 'push', |
11370 | 26 'pushkey': 'push', |
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27 } |
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28 |
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29 def makebreadcrumb(url, prefix=''): |
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30 '''Return a 'URL breadcrumb' list |
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31 |
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32 A 'URL breadcrumb' is a list of URL-name pairs, |
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33 corresponding to each of the path items on a URL. |
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34 This can be used to create path navigation entries. |
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35 ''' |
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36 if url.endswith('/'): |
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37 url = url[:-1] |
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38 if prefix: |
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39 url = '/' + prefix + url |
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40 relpath = url |
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41 if relpath.startswith('/'): |
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42 relpath = relpath[1:] |
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43 |
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44 breadcrumb = [] |
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45 urlel = url |
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46 pathitems = [''] + relpath.split('/') |
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47 for pathel in reversed(pathitems): |
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48 if not pathel or not urlel: |
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49 break |
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50 breadcrumb.append({'url': urlel, 'name': pathel}) |
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51 urlel = os.path.dirname(urlel) |
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52 return reversed(breadcrumb) |
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53 |
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54 class requestcontext(object): |
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55 """Holds state/context for an individual request. |
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56 |
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57 Servers can be multi-threaded. Holding state on the WSGI application |
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58 is prone to race conditions. Instances of this class exist to hold |
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59 mutable and race-free state for requests. |
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60 """ |
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61 def __init__(self, app, repo): |
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62 self.repo = repo |
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63 self.reponame = app.reponame |
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64 |
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65 self.archives = ('zip', 'gz', 'bz2') |
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66 |
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67 self.maxchanges = self.configint('web', 'maxchanges', 10) |
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68 self.stripecount = self.configint('web', 'stripes', 1) |
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69 self.maxshortchanges = self.configint('web', 'maxshortchanges', 60) |
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70 self.maxfiles = self.configint('web', 'maxfiles', 10) |
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71 self.allowpull = self.configbool('web', 'allowpull', True) |
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72 |
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73 # we use untrusted=False to prevent a repo owner from using |
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74 # web.templates in .hg/hgrc to get access to any file readable |
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75 # by the user running the CGI script |
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76 self.templatepath = self.config('web', 'templates', untrusted=False) |
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77 |
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78 # This object is more expensive to build than simple config values. |
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79 # It is shared across requests. The app will replace the object |
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80 # if it is updated. Since this is a reference and nothing should |
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81 # modify the underlying object, it should be constant for the lifetime |
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82 # of the request. |
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83 self.websubtable = app.websubtable |
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84 |
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85 # Trust the settings from the .hg/hgrc files by default. |
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86 def config(self, section, name, default=None, untrusted=True): |
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87 return self.repo.ui.config(section, name, default, |
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88 untrusted=untrusted) |
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89 |
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90 def configbool(self, section, name, default=False, untrusted=True): |
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91 return self.repo.ui.configbool(section, name, default, |
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92 untrusted=untrusted) |
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93 |
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94 def configint(self, section, name, default=None, untrusted=True): |
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95 return self.repo.ui.configint(section, name, default, |
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96 untrusted=untrusted) |
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97 |
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98 def configlist(self, section, name, default=None, untrusted=True): |
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99 return self.repo.ui.configlist(section, name, default, |
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100 untrusted=untrusted) |
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101 |
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102 archivespecs = { |
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103 'bz2': ('application/x-bzip2', 'tbz2', '.tar.bz2', None), |
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104 'gz': ('application/x-gzip', 'tgz', '.tar.gz', None), |
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105 'zip': ('application/zip', 'zip', '.zip', None), |
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106 } |
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107 |
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108 def archivelist(self, nodeid): |
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109 allowed = self.configlist('web', 'allow_archive') |
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110 for typ, spec in self.archivespecs.iteritems(): |
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111 if typ in allowed or self.configbool('web', 'allow%s' % typ): |
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112 yield {'type': typ, 'extension': spec[2], 'node': nodeid} |
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113 |
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114 def templater(self, req): |
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115 # determine scheme, port and server name |
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116 # this is needed to create absolute urls |
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117 |
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118 proto = req.env.get('wsgi.url_scheme') |
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119 if proto == 'https': |
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120 proto = 'https' |
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121 default_port = '443' |
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122 else: |
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123 proto = 'http' |
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124 default_port = '80' |
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125 |
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126 port = req.env['SERVER_PORT'] |
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127 port = port != default_port and (':' + port) or '' |
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128 urlbase = '%s://%s%s' % (proto, req.env['SERVER_NAME'], port) |
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129 logourl = self.config('web', 'logourl', 'http://mercurial.selenic.com/') |
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130 logoimg = self.config('web', 'logoimg', 'hglogo.png') |
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131 staticurl = self.config('web', 'staticurl') or req.url + 'static/' |
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132 if not staticurl.endswith('/'): |
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133 staticurl += '/' |
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134 |
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135 # some functions for the templater |
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136 |
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137 def motd(**map): |
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138 yield self.config('web', 'motd', '') |
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139 |
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140 # figure out which style to use |
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141 |
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142 vars = {} |
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143 styles = ( |
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144 req.form.get('style', [None])[0], |
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145 self.config('web', 'style'), |
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146 'paper', |
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147 ) |
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148 style, mapfile = templater.stylemap(styles, self.templatepath) |
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149 if style == styles[0]: |
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150 vars['style'] = style |
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151 |
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152 start = req.url[-1] == '?' and '&' or '?' |
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153 sessionvars = webutil.sessionvars(vars, start) |
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154 |
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155 if not self.reponame: |
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156 self.reponame = (self.config('web', 'name') |
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157 or req.env.get('REPO_NAME') |
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158 or req.url.strip('/') or self.repo.root) |
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159 |
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160 def websubfilter(text): |
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161 return websub(text, self.websubtable) |
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162 |
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163 # create the templater |
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164 |
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165 tmpl = templater.templater(mapfile, |
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166 filters={'websub': websubfilter}, |
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167 defaults={'url': req.url, |
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168 'logourl': logourl, |
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169 'logoimg': logoimg, |
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170 'staticurl': staticurl, |
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171 'urlbase': urlbase, |
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172 'repo': self.reponame, |
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173 'encoding': encoding.encoding, |
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174 'motd': motd, |
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175 'sessionvars': sessionvars, |
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176 'pathdef': makebreadcrumb(req.url), |
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177 'style': style, |
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178 }) |
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179 return tmpl |
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180 |
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181 |
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182 class hgweb(object): |
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183 """HTTP server for individual repositories. |
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184 |
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185 Instances of this class serve HTTP responses for a particular |
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186 repository. |
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187 |
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188 Instances are typically used as WSGI applications. |
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189 |
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190 Some servers are multi-threaded. On these servers, there may |
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191 be multiple active threads inside __call__. |
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192 """ |
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193 def __init__(self, repo, name=None, baseui=None): |
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194 if isinstance(repo, str): |
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195 if baseui: |
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196 u = baseui.copy() |
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197 else: |
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198 u = ui.ui() |
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199 r = hg.repository(u, repo) |
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201 # we trust caller to give us a private copy |
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202 r = repo |
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203 |
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204 r.ui.setconfig('ui', 'report_untrusted', 'off', 'hgweb') |
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205 r.baseui.setconfig('ui', 'report_untrusted', 'off', 'hgweb') |
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206 r.ui.setconfig('ui', 'nontty', 'true', 'hgweb') |
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207 r.baseui.setconfig('ui', 'nontty', 'true', 'hgweb') |
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208 # resolve file patterns relative to repo root |
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209 r.ui.setconfig('ui', 'forcecwd', r.root, 'hgweb') |
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210 r.baseui.setconfig('ui', 'forcecwd', r.root, 'hgweb') |
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211 # displaying bundling progress bar while serving feel wrong and may |
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212 # break some wsgi implementation. |
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213 r.ui.setconfig('progress', 'disable', 'true', 'hgweb') |
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214 r.baseui.setconfig('progress', 'disable', 'true', 'hgweb') |
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215 self._repos = [hg.cachedlocalrepo(self._webifyrepo(r))] |
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216 self._lastrepo = self._repos[0] |
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217 hook.redirect(True) |
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218 self.reponame = name |
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219 |
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220 def _webifyrepo(self, repo): |
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221 repo = getwebview(repo) |
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222 self.websubtable = webutil.getwebsubs(repo) |
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223 return repo |
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224 |
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225 @contextlib.contextmanager |
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226 def _obtainrepo(self): |
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227 """Obtain a repo unique to the caller. |
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228 |
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229 Internally we maintain a stack of cachedlocalrepo instances |
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230 to be handed out. If one is available, we pop it and return it, |
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231 ensuring it is up to date in the process. If one is not available, |
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232 we clone the most recently used repo instance and return it. |
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233 |
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234 It is currently possible for the stack to grow without bounds |
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235 if the server allows infinite threads. However, servers should |
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236 have a thread limit, thus establishing our limit. |
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237 """ |
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238 if self._repos: |
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239 cached = self._repos.pop() |
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240 r, created = cached.fetch() |
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241 else: |
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242 cached = self._lastrepo.copy() |
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243 r, created = cached.fetch() |
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244 if created: |
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245 r = self._webifyrepo(r) |
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246 |
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247 self._lastrepo = cached |
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248 self.mtime = cached.mtime |
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249 try: |
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250 yield r |
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251 finally: |
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252 self._repos.append(cached) |
258 | 253 |
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254 def run(self): |
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255 """Start a server from CGI environment. |
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256 |
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257 Modern servers should be using WSGI and should avoid this |
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258 method, if possible. |
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259 """ |
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260 if not os.environ.get('GATEWAY_INTERFACE', '').startswith("CGI/1."): |
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261 raise RuntimeError("This function is only intended to be " |
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262 "called while running as a CGI script.") |
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263 import mercurial.hgweb.wsgicgi as wsgicgi |
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264 wsgicgi.launch(self) |
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265 |
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266 def __call__(self, env, respond): |
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267 """Run the WSGI application. |
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268 |
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269 This may be called by multiple threads. |
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270 """ |
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271 req = wsgirequest(env, respond) |
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272 return self.run_wsgi(req) |
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273 |
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274 def run_wsgi(self, req): |
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275 """Internal method to run the WSGI application. |
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276 |
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277 This is typically only called by Mercurial. External consumers |
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278 should be using instances of this class as the WSGI application. |
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279 """ |
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280 with self._obtainrepo() as repo: |
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281 for r in self._runwsgi(req, repo): |
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282 yield r |
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283 |
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284 def _runwsgi(self, req, repo): |
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285 rctx = requestcontext(self, repo) |
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286 |
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287 # This state is global across all threads. |
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288 encoding.encoding = rctx.config('web', 'encoding', encoding.encoding) |
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289 rctx.repo.ui.environ = req.env |
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290 |
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291 # work with CGI variables to create coherent structure |
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292 # use SCRIPT_NAME, PATH_INFO and QUERY_STRING as well as our REPO_NAME |
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293 |
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294 req.url = req.env['SCRIPT_NAME'] |
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295 if not req.url.endswith('/'): |
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296 req.url += '/' |
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297 if 'REPO_NAME' in req.env: |
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298 req.url += req.env['REPO_NAME'] + '/' |
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299 |
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300 if 'PATH_INFO' in req.env: |
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301 parts = req.env['PATH_INFO'].strip('/').split('/') |
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302 repo_parts = req.env.get('REPO_NAME', '').split('/') |
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303 if parts[:len(repo_parts)] == repo_parts: |
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304 parts = parts[len(repo_parts):] |
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305 query = '/'.join(parts) |
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306 else: |
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307 query = req.env['QUERY_STRING'].split('&', 1)[0] |
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308 query = query.split(';', 1)[0] |
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309 |
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310 # process this if it's a protocol request |
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311 # protocol bits don't need to create any URLs |
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312 # and the clients always use the old URL structure |
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313 |
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314 cmd = req.form.get('cmd', [''])[0] |
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315 if protocol.iscmd(cmd): |
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316 try: |
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317 if query: |
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318 raise ErrorResponse(HTTP_NOT_FOUND) |
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319 if cmd in perms: |
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320 self.check_perm(rctx, req, perms[cmd]) |
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321 return protocol.call(rctx.repo, req, cmd) |
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322 except ErrorResponse as inst: |
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323 # A client that sends unbundle without 100-continue will |
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324 # break if we respond early. |
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325 if (cmd == 'unbundle' and |
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326 (req.env.get('HTTP_EXPECT', |
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327 '').lower() != '100-continue') or |
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328 req.env.get('X-HgHttp2', '')): |
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329 req.drain() |
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330 else: |
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331 req.headers.append(('Connection', 'Close')) |
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332 req.respond(inst, protocol.HGTYPE, |
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334 return '' |
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335 |
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336 # translate user-visible url structure to internal structure |
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337 |
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338 args = query.split('/', 2) |
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339 if 'cmd' not in req.form and args and args[0]: |
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340 |
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341 cmd = args.pop(0) |
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342 style = cmd.rfind('-') |
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343 if style != -1: |
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344 req.form['style'] = [cmd[:style]] |
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345 cmd = cmd[style + 1:] |
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346 |
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347 # avoid accepting e.g. style parameter as command |
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348 if util.safehasattr(webcommands, cmd): |
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349 req.form['cmd'] = [cmd] |
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350 |
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351 if cmd == 'static': |
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352 req.form['file'] = ['/'.join(args)] |
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353 else: |
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354 if args and args[0]: |
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355 node = args.pop(0).replace('%2F', '/') |
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356 req.form['node'] = [node] |
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357 if args: |
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358 req.form['file'] = args |
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359 |
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360 ua = req.env.get('HTTP_USER_AGENT', '') |
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361 if cmd == 'rev' and 'mercurial' in ua: |
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362 req.form['style'] = ['raw'] |
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363 |
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364 if cmd == 'archive': |
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365 fn = req.form['node'][0] |
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366 for type_, spec in rctx.archivespecs.iteritems(): |
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367 ext = spec[2] |
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368 if fn.endswith(ext): |
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369 req.form['node'] = [fn[:-len(ext)]] |
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370 req.form['type'] = [type_] |
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371 |
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372 # process the web interface request |
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373 |
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374 try: |
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375 tmpl = rctx.templater(req) |
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376 ctype = tmpl('mimetype', encoding=encoding.encoding) |
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377 ctype = templater.stringify(ctype) |
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378 |
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379 # check read permissions non-static content |
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380 if cmd != 'static': |
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381 self.check_perm(rctx, req, None) |
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382 |
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383 if cmd == '': |
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384 req.form['cmd'] = [tmpl.cache['default']] |
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385 cmd = req.form['cmd'][0] |
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386 |
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387 if rctx.configbool('web', 'cache', True): |
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388 caching(self, req) # sets ETag header or raises NOT_MODIFIED |
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389 if cmd not in webcommands.__all__: |
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390 msg = 'no such method: %s' % cmd |
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391 raise ErrorResponse(HTTP_BAD_REQUEST, msg) |
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392 elif cmd == 'file' and 'raw' in req.form.get('style', []): |
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393 rctx.ctype = ctype |
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394 content = webcommands.rawfile(rctx, req, tmpl) |
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395 else: |
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396 content = getattr(webcommands, cmd)(rctx, req, tmpl) |
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397 req.respond(HTTP_OK, ctype) |
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398 |
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399 return content |
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400 |
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401 except (error.LookupError, error.RepoLookupError) as err: |
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402 req.respond(HTTP_NOT_FOUND, ctype) |
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403 msg = str(err) |
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404 if (util.safehasattr(err, 'name') and |
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405 not isinstance(err, error.ManifestLookupError)): |
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406 msg = 'revision not found: %s' % err.name |
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407 return tmpl('error', error=msg) |
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408 except (error.RepoError, error.RevlogError) as inst: |
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409 req.respond(HTTP_SERVER_ERROR, ctype) |
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410 return tmpl('error', error=str(inst)) |
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411 except ErrorResponse as inst: |
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412 req.respond(inst, ctype) |
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413 if inst.code == HTTP_NOT_MODIFIED: |
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414 # Not allowed to return a body on a 304 |
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415 return [''] |
26200 | 416 return tmpl('error', error=str(inst)) |
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417 |
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418 def check_perm(self, rctx, req, op): |
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419 for permhook in permhooks: |
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420 permhook(rctx, req, op) |
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421 |
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422 def getwebview(repo): |
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423 """The 'web.view' config controls changeset filter to hgweb. Possible |
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424 values are ``served``, ``visible`` and ``all``. Default is ``served``. |
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425 The ``served`` filter only shows changesets that can be pulled from the |
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426 hgweb instance. The``visible`` filter includes secret changesets but |
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427 still excludes "hidden" one. |
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428 |
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429 See the repoview module for details. |
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430 |
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431 The option has been around undocumented since Mercurial 2.5, but no |
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432 user ever asked about it. So we better keep it undocumented for now.""" |
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433 viewconfig = repo.ui.config('web', 'view', 'served', |
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434 untrusted=True) |
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435 if viewconfig == 'all': |
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436 return repo.unfiltered() |
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437 elif viewconfig in repoview.filtertable: |
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438 return repo.filtered(viewconfig) |
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439 else: |
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440 return repo.filtered('served') |
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441 |