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176 lines (134 loc) · 6.54 KB
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# (c) 2014, James Tanner <tanner.jc@gmail.com>
#
# 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/>.
#
# ansible-vault is a script that encrypts/decrypts YAML files. See
# http://docs.ansible.com/playbooks_vault.html for more details.
from __future__ import (absolute_import, division, print_function)
__metaclass__ = type
import os
import sys
from ansible.errors import AnsibleError, AnsibleOptionsError
from ansible.parsing.dataloader import DataLoader
from ansible.parsing.vault import VaultEditor
from ansible.cli import CLI
from ansible.utils.unicode import to_unicode
try:
from __main__ import display
except ImportError:
from ansible.utils.display import Display
display = Display()
class VaultCLI(CLI):
""" Vault command line class """
VALID_ACTIONS = ("create", "decrypt", "edit", "encrypt", "rekey", "view")
def __init__(self, args):
self.vault_pass = None
self.new_vault_pass = None
super(VaultCLI, self).__init__(args)
def parse(self):
self.parser = CLI.base_parser(
vault_opts=True,
usage = "usage: %%prog [%s] [--help] [options] vaultfile.yml" % "|".join(self.VALID_ACTIONS),
epilog = "\nSee '%s <command> --help' for more information on a specific command.\n\n" % os.path.basename(sys.argv[0])
)
self.set_action()
# options specific to self.actions
if self.action == "create":
self.parser.set_usage("usage: %prog create [options] file_name")
elif self.action == "decrypt":
self.parser.set_usage("usage: %prog decrypt [options] file_name")
elif self.action == "edit":
self.parser.set_usage("usage: %prog edit [options] file_name")
elif self.action == "view":
self.parser.set_usage("usage: %prog view [options] file_name")
elif self.action == "encrypt":
self.parser.set_usage("usage: %prog encrypt [options] file_name")
elif self.action == "rekey":
self.parser.set_usage("usage: %prog rekey [options] file_name")
self.options, self.args = self.parser.parse_args(self.args[1:])
display.verbosity = self.options.verbosity
can_output = ['encrypt', 'decrypt']
if self.action not in can_output:
if self.options.output_file:
raise AnsibleOptionsError("The --output option can be used only with ansible-vault %s" % '/'.join(can_output))
if len(self.args) == 0:
raise AnsibleOptionsError("Vault requires at least one filename as a parameter")
else:
# This restriction should remain in place until it's possible to
# load multiple YAML records from a single file, or it's too easy
# to create an encrypted file that can't be read back in. But in
# the meanwhile, "cat a b c|ansible-vault encrypt --output x" is
# a workaround.
if self.options.output_file and len(self.args) > 1:
raise AnsibleOptionsError("At most one input file may be used with the --output option")
def run(self):
super(VaultCLI, self).run()
loader = DataLoader()
# set default restrictive umask
old_umask = os.umask(0o077)
if self.options.vault_password_file:
# read vault_pass from a file
self.vault_pass = CLI.read_vault_password_file(self.options.vault_password_file, loader)
else:
newpass = False
rekey = False
if not self.options.new_vault_password_file:
newpass = (self.action in ['create', 'rekey', 'encrypt'])
rekey = (self.action == 'rekey')
self.vault_pass, self.new_vault_pass = self.ask_vault_passwords(ask_new_vault_pass=newpass, rekey=rekey)
if self.options.new_vault_password_file:
# for rekey only
self.new_vault_pass = CLI.read_vault_password_file(self.options.new_vault_password_file, loader)
if not self.vault_pass:
raise AnsibleOptionsError("A password is required to use Ansible's Vault")
self.editor = VaultEditor(self.vault_pass)
self.execute()
# and restore umask
os.umask(old_umask)
def execute_encrypt(self):
if len(self.args) == 0 and sys.stdin.isatty():
display.display("Reading plaintext input from stdin", stderr=True)
for f in self.args or ['-']:
self.editor.encrypt_file(f, output_file=self.options.output_file)
if sys.stdout.isatty():
display.display("Encryption successful", stderr=True)
def execute_decrypt(self):
if len(self.args) == 0 and sys.stdin.isatty():
display.display("Reading ciphertext input from stdin", stderr=True)
for f in self.args or ['-']:
self.editor.decrypt_file(f, output_file=self.options.output_file)
if sys.stdout.isatty():
display.display("Decryption successful", stderr=True)
def execute_create(self):
if len(self.args) > 1:
raise AnsibleOptionsError("ansible-vault create can take only one filename argument")
self.editor.create_file(self.args[0])
def execute_edit(self):
for f in self.args:
self.editor.edit_file(f)
def execute_view(self):
for f in self.args:
# Note: vault should return byte strings because it could encrypt
# and decrypt binary files. We are responsible for changing it to
# unicode here because we are displaying it and therefore can make
# the decision that the display doesn't have to be precisely what
# the input was (leave that to decrypt instead)
self.pager(to_unicode(self.editor.plaintext(f)))
def execute_rekey(self):
for f in self.args:
if not (os.path.isfile(f)):
raise AnsibleError(f + " does not exist")
for f in self.args:
self.editor.rekey_file(f, self.new_vault_pass)
display.display("Rekey successful", stderr=True)