/usr/share/pyshared/hgext/largefiles/proto.py is in mercurial-common 2.0.2-1ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 | # Copyright 2011 Fog Creek Software
#
# This software may be used and distributed according to the terms of the
# GNU General Public License version 2 or any later version.
import os
import urllib2
from mercurial import error, httprepo, util, wireproto
from mercurial.i18n import _
import lfutil
LARGEFILES_REQUIRED_MSG = ('\nThis repository uses the largefiles extension.'
'\n\nPlease enable it in your Mercurial config '
'file.\n')
def putlfile(repo, proto, sha):
'''Put a largefile into a repository's local store and into the
user cache.'''
proto.redirect()
fd, tmpname = lfutil.mkstemp(repo, prefix='hg-putlfile')
tmpfp = os.fdopen(fd, 'wb+')
try:
try:
proto.getfile(tmpfp)
tmpfp.seek(0)
if sha != lfutil.hexsha1(tmpfp):
return wireproto.pushres(1)
tmpfp.close()
lfutil.copytostoreabsolute(repo, tmpname, sha)
except IOError, e:
repo.ui.warn(_('largefiles: failed to put %s (%s) into store: %s') %
(sha, tmpname, e.strerror))
return wireproto.pushres(1)
finally:
tmpfp.close()
os.unlink(tmpname)
return wireproto.pushres(0)
def getlfile(repo, proto, sha):
'''Retrieve a largefile from the repository-local cache or system
cache.'''
filename = lfutil.findfile(repo, sha)
if not filename:
raise util.Abort(_('requested largefile %s not present in cache') % sha)
f = open(filename, 'rb')
length = os.fstat(f.fileno())[6]
# Since we can't set an HTTP content-length header here, and
# Mercurial core provides no way to give the length of a streamres
# (and reading the entire file into RAM would be ill-advised), we
# just send the length on the first line of the response, like the
# ssh proto does for string responses.
def generator():
yield '%d\n' % length
for chunk in f:
yield chunk
return wireproto.streamres(generator())
def statlfile(repo, proto, sha):
'''Return '2\n' if the largefile is missing, '1\n' if it has a
mismatched checksum, or '0\n' if it is in good condition'''
filename = lfutil.findfile(repo, sha)
if not filename:
return '2\n'
fd = None
try:
fd = open(filename, 'rb')
return lfutil.hexsha1(fd) == sha and '0\n' or '1\n'
finally:
if fd:
fd.close()
def wirereposetup(ui, repo):
class lfileswirerepository(repo.__class__):
def putlfile(self, sha, fd):
# unfortunately, httprepository._callpush tries to convert its
# input file-like into a bundle before sending it, so we can't use
# it ...
if issubclass(self.__class__, httprepo.httprepository):
try:
return int(self._call('putlfile', data=fd, sha=sha,
headers={'content-type':'application/mercurial-0.1'}))
except (ValueError, urllib2.HTTPError):
return 1
# ... but we can't use sshrepository._call because the data=
# argument won't get sent, and _callpush does exactly what we want
# in this case: send the data straight through
else:
try:
ret, output = self._callpush("putlfile", fd, sha=sha)
if ret == "":
raise error.ResponseError(_('putlfile failed:'),
output)
return int(ret)
except IOError:
return 1
except ValueError:
raise error.ResponseError(
_('putlfile failed (unexpected response):'), ret)
def getlfile(self, sha):
stream = self._callstream("getlfile", sha=sha)
length = stream.readline()
try:
length = int(length)
except ValueError:
self._abort(error.ResponseError(_("unexpected response:"),
length))
return (length, stream)
def statlfile(self, sha):
try:
return int(self._call("statlfile", sha=sha))
except (ValueError, urllib2.HTTPError):
# If the server returns anything but an integer followed by a
# newline, newline, it's not speaking our language; if we get
# an HTTP error, we can't be sure the largefile is present;
# either way, consider it missing.
return 2
repo.__class__ = lfileswirerepository
# advertise the largefiles=serve capability
def capabilities(repo, proto):
return capabilities_orig(repo, proto) + ' largefiles=serve'
# duplicate what Mercurial's new out-of-band errors mechanism does, because
# clients old and new alike both handle it well
def webproto_refuseclient(self, message):
self.req.header([('Content-Type', 'application/hg-error')])
return message
def sshproto_refuseclient(self, message):
self.ui.write_err('%s\n-\n' % message)
self.fout.write('\n')
self.fout.flush()
return ''
def heads(repo, proto):
if lfutil.islfilesrepo(repo):
return wireproto.ooberror(LARGEFILES_REQUIRED_MSG)
return wireproto.heads(repo, proto)
def sshrepo_callstream(self, cmd, **args):
if cmd == 'heads' and self.capable('largefiles'):
cmd = 'lheads'
if cmd == 'batch' and self.capable('largefiles'):
args['cmds'] = args['cmds'].replace('heads ', 'lheads ')
return ssh_oldcallstream(self, cmd, **args)
def httprepo_callstream(self, cmd, **args):
if cmd == 'heads' and self.capable('largefiles'):
cmd = 'lheads'
if cmd == 'batch' and self.capable('largefiles'):
args['cmds'] = args['cmds'].replace('heads ', 'lheads ')
return http_oldcallstream(self, cmd, **args)
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