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123 lines
3.5 KiB
Python
Executable file
123 lines
3.5 KiB
Python
Executable file
#!/usr/bin/python
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# (c) 2012, Michael DeHaan <michael.dehaan@gmail.com>
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#
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# This file is part of Ansible
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#
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# Ansible is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# Ansible is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with Ansible. If not, see <http://www.gnu.org/licenses/>.
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#
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import sys
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import os
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import shlex
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import shutil
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import syslog
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try:
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from hashlib import md5 as _md5
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except ImportError:
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from md5 import md5 as _md5
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# ===========================================
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# convert arguments of form a=b c=d
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# to a dictionary
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# FIXME: make more idiomatic
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def dump_kv(vars):
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return " ".join("%s='%s'" % (k,v) for (k,v) in vars.items())
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def exit_kv(rc=0, **kwargs):
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if 'path' in kwargs:
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add_path_info(kwargs)
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print dump_kv(kwargs)
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sys.exit(rc)
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def md5(filename):
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''' Return MD5 hex digest of local file, or None if file is not present. '''
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if not os.path.exists(filename):
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return None
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digest = _md5()
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blocksize = 64 * 1024
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infile = open(filename, 'rb')
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block = infile.read(blocksize)
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while block:
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digest.update(block)
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block = infile.read(blocksize)
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infile.close()
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return digest.hexdigest()
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# ===========================================
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if len(sys.argv) == 1:
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exit_kv(rc=1, failed=1, msg="incorrect number of arguments given")
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argfile = sys.argv[1]
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if not os.path.exists(argfile):
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exit_kv(rc=1, failed=1, msg="file %s does not exist" % (argfile))
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args = open(argfile, 'r').read()
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items = shlex.split(args)
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syslog.openlog('ansible-%s' % os.path.basename(__file__))
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syslog.syslog(syslog.LOG_NOTICE, 'Invoked with %s' % args)
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params = {}
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for x in items:
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(k, v) = x.split("=")
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params[k] = v
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src = params['src']
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dest = params['dest']
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if src:
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src = os.path.expanduser(src)
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if dest:
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dest = os.path.expanduser(dest)
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md5sum_src = None
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# raise an error if there is no src file
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if not os.path.exists(src):
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exit_kv(rc=1, failed=1, msg="Source %s failed to transfer" % (src))
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if not os.access(src, os.R_OK):
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exit_kv(rc=1, failed=1, msg="Source %s not readable" % (src))
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md5sum_src = md5(src)
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md5sum_dest = None
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# check if there is no dest file
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if os.path.exists(dest):
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# raise an error if copy has no permission on dest
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if not os.access(dest, os.W_OK):
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exit_kv(rc=1, failed=1, msg="Destination %s not writable" % (dest))
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if not os.access(dest, os.R_OK):
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exit_kv(rc=1, failed=1, msg="Destination %s not readable" % (dest))
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md5sum_dest = md5(dest)
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else:
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if not os.access(os.path.dirname(dest), os.W_OK):
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exit_kv(rc=1, failed=1, msg="Destination %s not writable" % (os.path.dirname(dest)))
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if md5sum_src != md5sum_dest:
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# was os.system("cp %s %s" % (src, dest))
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try:
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shutil.copyfile(src, dest)
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except shutil.Error:
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exit_kv(rc=1, failed=1, msg="failed to copy: %s and %s are the same" % (src, dest))
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except IOError:
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exit_kv(rc=1, failed=1, msg="failed to copy: %s to %s" % (src, dest))
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changed = True
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else:
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changed = False
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# mission accomplished
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#print "md5sum=%s changed=%s" % (md5sum_src, changed)
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exit_kv(dest=dest, src=src, md5sum=md5sum_src, changed=changed)
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