annotate mercurial/statichttprepo.py @ 16882:a2d6e336e9cc stable

statichttprepo: don't send Range header when requesting entire file When requesting files using statichttprepo.httprangereader, a request for the entire file is sent with a Range: bytes=0- header. This causes problems with web servers such as Cherokee that return an HTTP 416 when an empty file is requested in this way, which in turn cause some repository clone attempts to fail. This patch omits the Range header when the entire file is being requested, which fixes the problem.
author Alexander Boyd <alex@opengroove.org>
date Sat, 09 Jun 2012 19:13:24 -0600
parents 236bb604dc39
children 7034365089bf
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1 # statichttprepo.py - simple http repository class for mercurial
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2 #
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3 # This provides read-only repo access to repositories exported via static http
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4 #
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5 # Copyright 2005-2007 Matt Mackall <mpm@selenic.com>
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6 #
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7 # This software may be used and distributed according to the terms of the
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8 # GNU General Public License version 2 or any later version.
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9
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10 from i18n import _
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11 import changelog, byterange, url, error
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parents: 14076
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12 import localrepo, manifest, util, scmutil, store
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Dirkjan Ochtman <dirkjan@ochtman.nl>
parents: 5321
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13 import urllib, urllib2, errno
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parents: 1101
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14
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15 class httprangereader(object):
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16 def __init__(self, url, opener):
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17 # we assume opener has HTTPRangeHandler
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Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents: 7211
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18 self.url = url
95f3694cc5a4 statichttprepo: cleanups, use url.py (proxy, password support)
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents: 7211
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19 self.pos = 0
95f3694cc5a4 statichttprepo: cleanups, use url.py (proxy, password support)
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parents: 7211
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20 self.opener = opener
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26abd91d9e84 static-http: mimic more closely localrepo (issue2164: allow clone -r )
Nicolas Dumazet <nicdumz.commits@gmail.com>
parents: 10263
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21 self.name = url
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22 def seek(self, pos):
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23 self.pos = pos
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24 def read(self, bytes=None):
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Benoit Boissinot <benoit.boissinot@ens-lyon.org>
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25 req = urllib2.Request(self.url)
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26 end = ''
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27 if bytes:
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28 end = self.pos + bytes - 1
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29 if self.pos or end:
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30 req.add_header('Range', 'bytes=%d-%s' % (self.pos, end))
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31
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32 try:
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33 f = self.opener.open(req)
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34 data = f.read()
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35 # Python 2.6+ defines a getcode() function, and 2.4 and
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Augie Fackler <durin42@gmail.com>
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36 # 2.5 appear to always have an undocumented code attribute
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37 # set. If we can't read either of those, fall back to 206
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38 # and hope for the best.
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39 code = getattr(f, 'getcode', lambda : getattr(f, 'code', 206))()
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40 except urllib2.HTTPError, inst:
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41 num = inst.code == 404 and errno.ENOENT or None
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42 raise IOError(num, inst)
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43 except urllib2.URLError, inst:
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44 raise IOError(None, inst.reason[1])
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45
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Patrick Mezard <pmezard@gmail.com>
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46 if code == 200:
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47 # HTTPRangeHandler does nothing if remote does not support
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48 # Range headers and returns the full entity. Let's slice it.
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49 if bytes:
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50 data = data[self.pos:self.pos + bytes]
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51 else:
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52 data = data[self.pos:]
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53 elif bytes:
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54 data = data[:bytes]
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55 self.pos += len(data)
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56 return data
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57 def __iter__(self):
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58 return iter(self.read().splitlines(1))
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59 def close(self):
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60 pass
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61
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62 def build_opener(ui, authinfo):
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63 # urllib cannot handle URLs with embedded user or passwd
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64 urlopener = url.opener(ui, authinfo)
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65 urlopener.add_handler(byterange.HTTPRangeHandler())
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66
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67 class statichttpopener(scmutil.abstractopener):
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68 def __init__(self, base):
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69 self.base = base
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70
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71 def __call__(self, path, mode="r", atomictemp=None):
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parents: 13447
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72 if mode not in ('r', 'rb'):
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73 raise IOError('Permission denied')
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74 f = "/".join((self.base, urllib.quote(path)))
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75 return httprangereader(f, urlopener)
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76
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77 return statichttpopener
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78
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79 class statichttprepository(localrepo.localrepository):
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80 def __init__(self, ui, path):
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81 self._url = path
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82 self.ui = ui
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83
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84 self.root = path
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Brodie Rao <brodie@bitheap.org>
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85 u = util.url(path.rstrip('/') + "/.hg")
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86 self.path, authinfo = u.authinfo()
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87
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88 opener = build_opener(ui, authinfo)
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89 self.opener = opener(self.path)
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90 self._phasedefaults = []
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91
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92 try:
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93 requirements = scmutil.readrequires(self.opener, self.supported)
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94 except IOError, inst:
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95 if inst.errno != errno.ENOENT:
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96 raise
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97 requirements = set()
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98
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99 # check if it is a non-empty old-style repository
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100 try:
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101 fp = self.opener("00changelog.i")
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102 fp.read(1)
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103 fp.close()
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104 except IOError, inst:
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105 if inst.errno != errno.ENOENT:
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106 raise
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107 # we do not care about empty old-style repositories here
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108 msg = _("'%s' does not appear to be an hg repository") % path
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109 raise error.RepoError(msg)
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110
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111 # setup store
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parents: 13400
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112 self.store = store.store(requirements, self.path, opener)
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113 self.spath = self.store.path
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114 self.sopener = self.store.opener
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115 self.sjoin = self.store.join
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Idan Kamara <idankk86@gmail.com>
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116 self._filecache = {}
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117
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118 self.manifest = manifest.manifest(self.sopener)
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119 self.changelog = changelog.changelog(self.sopener)
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Greg Ward <greg-hg@gerg.ca>
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120 self._tags = None
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121 self.nodetagscache = None
11066
26abd91d9e84 static-http: mimic more closely localrepo (issue2164: allow clone -r )
Nicolas Dumazet <nicdumz.commits@gmail.com>
parents: 10263
diff changeset
122 self._branchcache = None
26abd91d9e84 static-http: mimic more closely localrepo (issue2164: allow clone -r )
Nicolas Dumazet <nicdumz.commits@gmail.com>
parents: 10263
diff changeset
123 self._branchcachetip = None
1598
14d1f1868bf6 cleanup of revlog.group when repository is local
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents: 1325
diff changeset
124 self.encodepats = None
14d1f1868bf6 cleanup of revlog.group when repository is local
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents: 1325
diff changeset
125 self.decodepats = None
14519
28682c7e7479 statichttprepo: use in-place difference for shorter line
Martin Geisler <mg@aragost.com>
parents: 14482
diff changeset
126 self.capabilities.difference_update(["pushkey"])
1101
2cf5c8a4eae5 Separate out old-http support
mpm@selenic.com
parents:
diff changeset
127
2673
109a22f5434a hooks: add url to changegroup, incoming, prechangegroup, pretxnchangegroup hooks
Vadim Gelfer <vadim.gelfer@gmail.com>
parents: 2072
diff changeset
128 def url(self):
7211
25c0dee16ee0 Autodetect static-http
Matt Mackall <mpm@selenic.com>
parents: 7179
diff changeset
129 return self._url
2673
109a22f5434a hooks: add url to changegroup, incoming, prechangegroup, pretxnchangegroup hooks
Vadim Gelfer <vadim.gelfer@gmail.com>
parents: 2072
diff changeset
130
1101
2cf5c8a4eae5 Separate out old-http support
mpm@selenic.com
parents:
diff changeset
131 def local(self):
2cf5c8a4eae5 Separate out old-http support
mpm@selenic.com
parents:
diff changeset
132 return False
2740
386f04d6ecb3 clean up hg.py: move repo constructor code into each repo module
Vadim Gelfer <vadim.gelfer@gmail.com>
parents: 2673
diff changeset
133
7005
7739b61897df do not pretend to lock static-http repositories (issue994)
Martin Geisler <mg@daimi.au.dk>
parents: 6988
diff changeset
134 def lock(self, wait=True):
7739b61897df do not pretend to lock static-http repositories (issue994)
Martin Geisler <mg@daimi.au.dk>
parents: 6988
diff changeset
135 raise util.Abort(_('cannot lock static-http repository'))
7739b61897df do not pretend to lock static-http repositories (issue994)
Martin Geisler <mg@daimi.au.dk>
parents: 6988
diff changeset
136
2740
386f04d6ecb3 clean up hg.py: move repo constructor code into each repo module
Vadim Gelfer <vadim.gelfer@gmail.com>
parents: 2673
diff changeset
137 def instance(ui, path, create):
386f04d6ecb3 clean up hg.py: move repo constructor code into each repo module
Vadim Gelfer <vadim.gelfer@gmail.com>
parents: 2673
diff changeset
138 if create:
386f04d6ecb3 clean up hg.py: move repo constructor code into each repo module
Vadim Gelfer <vadim.gelfer@gmail.com>
parents: 2673
diff changeset
139 raise util.Abort(_('cannot create new static-http repository'))
4853
bf10a03a6b24 Removed deprecated hg:// and old-http:// protocols (issue406)
Thomas Arendsen Hein <thomas@intevation.de>
parents: 4635
diff changeset
140 return statichttprepository(ui, path[7:])