ansible/copy

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#!/usr/bin/python
# (c) 2012, Michael DeHaan <michael.dehaan@gmail.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 sys
import os
import shlex
import shutil
import syslog
# ===========================================
# convert arguments of form a=b c=d
# to a dictionary
# FIXME: make more idiomatic
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def dump_kv(vars):
return " ".join("%s='%s'" % (k,v) for (k,v) in vars.items())
def exit_kv(rc=0, **kwargs):
if 'path' in kwargs:
add_path_info(kwargs)
print dump_kv(kwargs)
sys.exit(rc)
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def md5_sum(f):
md5sum = os.popen("/usr/bin/md5sum %(file)s 2>/dev/null || /sbin/md5 -q %(file)s 2>/dev/null || /usr/bin/digest -a md5 -v %(file)s 2>/dev/null" % {"file": f}).read().split()[0]
return md5sum
if len(sys.argv) == 1:
exit_kv(rc=1, failed=1, msg="incorrect number of arguments given")
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argfile = sys.argv[1]
if not os.path.exists(argfile):
exit_kv(rc=1, failed=1, msg="file %s does not exist" % (argfile))
args = open(argfile, 'r').read()
items = shlex.split(args)
syslog.openlog('ansible-%s' % os.path.basename(__file__))
syslog.syslog(syslog.LOG_NOTICE, 'Invoked with %s' % args)
params = {}
for x in items:
(k, v) = x.split("=")
params[k] = v
src = params['src']
dest = params['dest']
if src:
src = os.path.expanduser(src)
if dest:
dest = os.path.expanduser(dest)
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md5sum_src = None
# raise an error if there is no src file
if not os.path.exists(src):
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):
exit_kv(rc=1, failed=1, msg="Source %s not readable" % (src))
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md5sum_src = md5_sum(src)
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md5sum_dest = None
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# check if there is no dest file
if os.path.exists(dest):
# raise an error if copy has no permission on dest
if not os.access(dest, os.W_OK):
exit_kv(rc=1, failed=1, msg="Destination %s not writable" % (dest))
if not os.access(dest, os.R_OK):
exit_kv(rc=1, failed=1, msg="Destination %s not readable" % (dest))
md5sum_dest = md5_sum(dest)
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else:
if not os.access(os.path.dirname(dest), os.W_OK):
exit_kv(rc=1, failed=1, msg="Destination %s not writable" % (os.path.dirname(dest)))
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if md5sum_src != md5sum_dest:
# was os.system("cp %s %s" % (src, dest))
try:
shutil.copyfile(src, dest)
except shutil.Error:
exit_kv(rc=1, failed=1, msg="failed to copy: %s and %s are the same" % (src, dest))
except IOError:
exit_kv(rc=1, failed=1, msg="failed to copy: %s to %s" % (src, dest))
changed = True
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else:
changed = False
# 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)