Mercurial > hg
annotate hgext/largefiles/proto.py @ 18910:b52404a914a9
scheme: don't crash on invalid URLs
author | Mads Kiilerich <madski@unity3d.com> |
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date | Thu, 11 Apr 2013 14:41:22 +0200 |
parents | a977b42df8b3 |
children | d2c4d37f7db5 |
rev | line source |
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15168 | 1 # Copyright 2011 Fog Creek Software |
2 # | |
3 # This software may be used and distributed according to the terms of the | |
4 # GNU General Public License version 2 or any later version. | |
5 | |
6 import os | |
7 import urllib2 | |
8 | |
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9 from mercurial import error, httppeer, util, wireproto |
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10 from mercurial.wireproto import batchable, future |
15168 | 11 from mercurial.i18n import _ |
12 | |
13 import lfutil | |
14 | |
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15 LARGEFILES_REQUIRED_MSG = ('\nThis repository uses the largefiles extension.' |
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16 '\n\nPlease enable it in your Mercurial config ' |
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17 'file.\n') |
15168 | 18 |
19 def putlfile(repo, proto, sha): | |
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20 '''Put a largefile into a repository's local store and into the |
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21 user cache.''' |
15168 | 22 proto.redirect() |
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23 |
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24 path = lfutil.storepath(repo, sha) |
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25 util.makedirs(os.path.dirname(path)) |
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26 tmpfp = util.atomictempfile(path, createmode=repo.store.createmode) |
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27 |
15168 | 28 try: |
29 try: | |
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30 proto.getfile(tmpfp) |
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31 tmpfp._fp.seek(0) |
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32 if sha != lfutil.hexsha1(tmpfp._fp): |
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33 raise IOError(0, _('largefile contents do not match hash')) |
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34 tmpfp.close() |
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35 lfutil.linktousercache(repo, sha) |
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36 except IOError, e: |
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37 repo.ui.warn(_('largefiles: failed to put %s into store: %s') % |
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38 (sha, e.strerror)) |
15168 | 39 return wireproto.pushres(1) |
40 finally: | |
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41 tmpfp.discard() |
15168 | 42 |
43 return wireproto.pushres(0) | |
44 | |
45 def getlfile(repo, proto, sha): | |
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46 '''Retrieve a largefile from the repository-local cache or system |
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47 cache.''' |
15168 | 48 filename = lfutil.findfile(repo, sha) |
49 if not filename: | |
50 raise util.Abort(_('requested largefile %s not present in cache') % sha) | |
51 f = open(filename, 'rb') | |
52 length = os.fstat(f.fileno())[6] | |
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53 |
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54 # Since we can't set an HTTP content-length header here, and |
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55 # Mercurial core provides no way to give the length of a streamres |
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56 # (and reading the entire file into RAM would be ill-advised), we |
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57 # just send the length on the first line of the response, like the |
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58 # ssh proto does for string responses. |
15168 | 59 def generator(): |
60 yield '%d\n' % length | |
61 for chunk in f: | |
62 yield chunk | |
63 return wireproto.streamres(generator()) | |
64 | |
65 def statlfile(repo, proto, sha): | |
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66 '''Return '2\n' if the largefile is missing, '0\n' if it seems to be in |
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67 good condition. |
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68 |
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69 The value 1 is reserved for mismatched checksum, but that is too expensive |
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70 to be verified on every stat and must be caught be running 'hg verify' |
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71 server side.''' |
15168 | 72 filename = lfutil.findfile(repo, sha) |
73 if not filename: | |
74 return '2\n' | |
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75 return '0\n' |
15168 | 76 |
77 def wirereposetup(ui, repo): | |
78 class lfileswirerepository(repo.__class__): | |
79 def putlfile(self, sha, fd): | |
80 # unfortunately, httprepository._callpush tries to convert its | |
81 # input file-like into a bundle before sending it, so we can't use | |
82 # it ... | |
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83 if issubclass(self.__class__, httppeer.httppeer): |
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84 res = None |
15168 | 85 try: |
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86 res = self._call('putlfile', data=fd, sha=sha, |
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87 headers={'content-type':'application/mercurial-0.1'}) |
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88 d, output = res.split('\n', 1) |
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89 for l in output.splitlines(True): |
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90 self.ui.warn(_('remote: '), l, '\n') |
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91 return int(d) |
15168 | 92 except (ValueError, urllib2.HTTPError): |
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93 self.ui.warn(_('unexpected putlfile response: %s') % res) |
15168 | 94 return 1 |
95 # ... but we can't use sshrepository._call because the data= | |
96 # argument won't get sent, and _callpush does exactly what we want | |
97 # in this case: send the data straight through | |
98 else: | |
99 try: | |
100 ret, output = self._callpush("putlfile", fd, sha=sha) | |
101 if ret == "": | |
102 raise error.ResponseError(_('putlfile failed:'), | |
103 output) | |
104 return int(ret) | |
105 except IOError: | |
106 return 1 | |
107 except ValueError: | |
108 raise error.ResponseError( | |
109 _('putlfile failed (unexpected response):'), ret) | |
110 | |
111 def getlfile(self, sha): | |
112 stream = self._callstream("getlfile", sha=sha) | |
113 length = stream.readline() | |
114 try: | |
115 length = int(length) | |
116 except ValueError: | |
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117 self._abort(error.ResponseError(_("unexpected response:"), |
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118 length)) |
15168 | 119 return (length, stream) |
120 | |
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121 @batchable |
15168 | 122 def statlfile(self, sha): |
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123 f = future() |
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124 result = {'sha': sha} |
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125 yield result, f |
15168 | 126 try: |
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127 yield int(f.value) |
15168 | 128 except (ValueError, urllib2.HTTPError): |
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129 # If the server returns anything but an integer followed by a |
15168 | 130 # newline, newline, it's not speaking our language; if we get |
131 # an HTTP error, we can't be sure the largefile is present; | |
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132 # either way, consider it missing. |
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133 yield 2 |
15168 | 134 |
135 repo.__class__ = lfileswirerepository | |
136 | |
137 # advertise the largefiles=serve capability | |
138 def capabilities(repo, proto): | |
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139 return capabilitiesorig(repo, proto) + ' largefiles=serve' |
15168 | 140 |
141 def heads(repo, proto): | |
142 if lfutil.islfilesrepo(repo): | |
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143 return wireproto.ooberror(LARGEFILES_REQUIRED_MSG) |
15168 | 144 return wireproto.heads(repo, proto) |
145 | |
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146 def sshrepocallstream(self, cmd, **args): |
15168 | 147 if cmd == 'heads' and self.capable('largefiles'): |
148 cmd = 'lheads' | |
149 if cmd == 'batch' and self.capable('largefiles'): | |
150 args['cmds'] = args['cmds'].replace('heads ', 'lheads ') | |
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151 return ssholdcallstream(self, cmd, **args) |
15168 | 152 |
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153 def httprepocallstream(self, cmd, **args): |
15168 | 154 if cmd == 'heads' and self.capable('largefiles'): |
155 cmd = 'lheads' | |
156 if cmd == 'batch' and self.capable('largefiles'): | |
157 args['cmds'] = args['cmds'].replace('heads ', 'lheads ') | |
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158 return httpoldcallstream(self, cmd, **args) |