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
|
# Copyright (C) 2005 Canonical Ltd
# Authors: Robert Collins <robert.collins@canonical.com>
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
"""GPG signing and checking logic."""
import os
import sys
from bzrlib.lazy_import import lazy_import
lazy_import(globals(), """
import errno
import subprocess
from bzrlib import (
errors,
trace,
ui,
)
""")
class DisabledGPGStrategy(object):
"""A GPG Strategy that makes everything fail."""
def __init__(self, ignored):
"""Real strategies take a configuration."""
def sign(self, content):
raise errors.SigningFailed('Signing is disabled.')
class LoopbackGPGStrategy(object):
"""A GPG Strategy that acts like 'cat' - data is just passed through."""
def __init__(self, ignored):
"""Real strategies take a configuration."""
def sign(self, content):
return content
def _set_gpg_tty():
tty = os.environ.get('TTY')
if tty is not None:
os.environ['GPG_TTY'] = tty
trace.mutter('setting GPG_TTY=%s', tty)
else:
# This is not quite worthy of a warning, because some people
# don't need GPG_TTY to be set. But it is worthy of a big mark
# in ~/.bzr.log, so that people can debug it if it happens to them
trace.mutter('** Env var TTY empty, cannot set GPG_TTY.'
' Is TTY exported?')
class GPGStrategy(object):
"""GPG Signing and checking facilities."""
def _command_line(self):
return [self._config.gpg_signing_command(), '--clearsign']
def __init__(self, config):
self._config = config
def sign(self, content):
if isinstance(content, unicode):
raise errors.BzrBadParameterUnicode('content')
ui.ui_factory.clear_term()
preexec_fn = _set_gpg_tty
if sys.platform == 'win32':
# Win32 doesn't support preexec_fn, but wouldn't support TTY anyway.
preexec_fn = None
try:
process = subprocess.Popen(self._command_line(),
stdin=subprocess.PIPE,
stdout=subprocess.PIPE,
preexec_fn=preexec_fn)
try:
result = process.communicate(content)[0]
if process.returncode is None:
process.wait()
if process.returncode != 0:
raise errors.SigningFailed(self._command_line())
return result
except OSError, e:
if e.errno == errno.EPIPE:
raise errors.SigningFailed(self._command_line())
else:
raise
except ValueError:
# bad subprocess parameters, should never happen.
raise
except OSError, e:
if e.errno == errno.ENOENT:
# gpg is not installed
raise errors.SigningFailed(self._command_line())
else:
raise
|