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Write SSH key data to a named pipe and remove immediately after reading to avoid leaving private key data on disk.

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This commit is contained in:
Chris Church 2015-06-02 20:23:12 -04:00
parent c24e51f515
commit 7770b813ea
1 changed files with 14 additions and 5 deletions
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19
awx/main/tasks.py
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@ -14,6 +14,7 @@ import re
import shutil
import stat
import tempfile
import thread
import time
import traceback
import urlparse
@ -254,11 +255,18 @@ class BaseTask(Task):
private_data_files = {}
if private_data is not None:
for name, data in private_data.iteritems():
handle, path = tempfile.mkstemp(dir=kwargs.get('private_data_dir', None))
f = os.fdopen(handle, 'w')
f.write(data)
f.close()
os.chmod(path, stat.S_IRUSR | stat.S_IWUSR)
# For credentials used with ssh-add, write to a named pipe which
# will be read then closed, instead of leaving the SSH key on disk.
if name in ('credential', 'scm_credential', 'ad_hoc_credential'):
path = os.path.join(kwargs.get('private_data_dir', tempfile.gettempdir()), name)
os.mkfifo(path, 0600)
thread.start_new_thread(lambda p, d: open(p, 'w').write(d), (path, data))
else:
handle, path = tempfile.mkstemp(dir=kwargs.get('private_data_dir', None))
f = os.fdopen(handle, 'w')
f.write(data)
f.close()
os.chmod(path, stat.S_IRUSR | stat.S_IWUSR)
private_data_files[name] = path
return private_data_files
@ -325,6 +333,7 @@ class BaseTask(Task):
def wrap_args_with_ssh_agent(self, args, ssh_key_path, ssh_auth_sock=None):
if ssh_key_path:
cmd = ' && '.join([self.args2cmdline('ssh-add', ssh_key_path),
self.args2cmdline('rm', '-f', ssh_key_path),
self.args2cmdline(*args)])
args = ['ssh-agent']
if ssh_auth_sock: