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
|
# (c) 2014, Chris Church <chris@ninemoreminutes.com>
#
# This file is part of Ansible.
#
# Ansible 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 3 of the License, or
# (at your option) any later version.
#
# Ansible 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 Ansible. If not, see <http://www.gnu.org/licenses/>.
import os
import re
import pipes
import ansible.constants as C
_USER_HOME_PATH_RE = re.compile(r'^~[_.A-Za-z0-9][-_.A-Za-z0-9]*$')
class ShellModule(object):
def env_prefix(self, **kwargs):
'''Build command prefix with environment variables.'''
env = dict(
LANG = C.DEFAULT_MODULE_LANG,
LC_CTYPE = C.DEFAULT_MODULE_LANG,
)
env.update(kwargs)
return ' '.join(['%s=%s' % (k, pipes.quote(unicode(v))) for k,v in env.items()])
def join_path(self, *args):
return os.path.join(*args)
def path_has_trailing_slash(self, path):
return path.endswith('/')
def chmod(self, mode, path):
path = pipes.quote(path)
return 'chmod %s %s' % (mode, path)
def remove(self, path, recurse=False):
path = pipes.quote(path)
if recurse:
return "rm -rf %s >/dev/null 2>&1" % path
else:
return "rm -f %s >/dev/null 2>&1" % path
def mkdtemp(self, basefile=None, system=False, mode=None):
if not basefile:
basefile = 'ansible-tmp-%s-%s' % (time.time(), random.randint(0, 2**48))
basetmp = self.join_path(C.DEFAULT_REMOTE_TMP, basefile)
if system and basetmp.startswith('$HOME'):
basetmp = self.join_path('/tmp', basefile)
cmd = 'mkdir -p %s' % basetmp
if mode:
cmd += ' && chmod %s %s' % (mode, basetmp)
cmd += ' && echo %s' % basetmp
return cmd
def expand_user(self, user_home_path):
''' Return a command to expand tildes in a path
It can be either "~" or "~username". We use the POSIX definition of
a username:
http://pubs.opengroup.org/onlinepubs/000095399/basedefs/xbd_chap03.html#tag_03_426
http://pubs.opengroup.org/onlinepubs/000095399/basedefs/xbd_chap03.html#tag_03_276
'''
# Check that the user_path to expand is safe
if user_home_path != '~':
if not _USER_HOME_PATH_RE.match(user_home_path):
# pipes.quote will make the shell return the string verbatim
user_home_path = pipes.quote(user_home_path)
return 'echo %s' % user_home_path
def checksum(self, path, python_interp):
# The following test needs to be SH-compliant. BASH-isms will
# not work if /bin/sh points to a non-BASH shell.
#
# In the following test, each condition is a check and logical
# comparison (|| or &&) that sets the rc value. Every check is run so
# the last check in the series to fail will be the rc that is
# returned.
#
# If a check fails we error before invoking the hash functions because
# hash functions may successfully take the hash of a directory on BSDs
# (UFS filesystem?) which is not what the rest of the ansible code
# expects
#
# If all of the available hashing methods fail we fail with an rc of
# 0. This logic is added to the end of the cmd at the bottom of this
# function.
test = "rc=flag; [ -r \'%(p)s\' ] || rc=2; [ -f \'%(p)s\' ] || rc=1; [ -d \'%(p)s\' ] && rc=3; %(i)s -V 2>/dev/null || rc=4; [ x\"$rc\" != \"xflag\" ] && echo \"${rc}\"\' %(p)s\' && exit 0" % dict(p=path, i=python_interp)
csums = [
"(%s -c 'import hashlib; BLOCKSIZE = 65536; hasher = hashlib.sha1();\nafile = open(\"%s\", \"rb\")\nbuf = afile.read(BLOCKSIZE)\nwhile len(buf) > 0:\n\thasher.update(buf)\n\tbuf = afile.read(BLOCKSIZE)\nafile.close()\nprint(hasher.hexdigest())' 2>/dev/null)" % (python_interp, path), # Python > 2.4 (including python3)
"(%s -c 'import sha; BLOCKSIZE = 65536; hasher = sha.sha();\nafile = open(\"%s\", \"rb\")\nbuf = afile.read(BLOCKSIZE)\nwhile len(buf) > 0:\n\thasher.update(buf)\n\tbuf = afile.read(BLOCKSIZE)\nafile.close()\nprint(hasher.hexdigest())' 2>/dev/null)" % (python_interp, path), # Python == 2.4
]
cmd = " || ".join(csums)
cmd = "%s; %s || (echo \'0 %s\')" % (test, cmd, path)
return cmd
def build_module_command(self, env_string, shebang, cmd, rm_tmp=None):
cmd_parts = [env_string.strip(), shebang.replace("#!", "").strip(), cmd]
new_cmd = " ".join(cmd_parts)
if rm_tmp:
new_cmd = '%s; rm -rf %s >/dev/null 2>&1' % (new_cmd, rm_tmp)
return new_cmd
|
