Current File : //lib/python3/dist-packages/keyring/cli.py
"""Simple command line interface to get/set password from a keyring"""
import getpass
import argparse
import sys
from . import core
from . import backend
from . import completion
from . import set_keyring, get_password, set_password, delete_password
from .util import platform_
class CommandLineTool:
def __init__(self):
self.parser = argparse.ArgumentParser()
self.parser.add_argument(
"-p",
"--keyring-path",
dest="keyring_path",
default=None,
help="Path to the keyring backend",
)
self.parser.add_argument(
"-b",
"--keyring-backend",
dest="keyring_backend",
default=None,
help="Name of the keyring backend",
)
self.parser.add_argument(
"--list-backends",
action="store_true",
help="List keyring backends and exit",
)
self.parser.add_argument(
"--disable", action="store_true", help="Disable keyring and exit"
)
self.parser._operations = ["get", "set", "del", "diagnose"]
self.parser.add_argument(
'operation',
choices=self.parser._operations,
nargs="?",
)
self.parser.add_argument(
'service',
nargs="?",
)
self.parser.add_argument(
'username',
nargs="?",
)
completion.install(self.parser)
def run(self, argv):
args = self.parser.parse_args(argv)
vars(self).update(vars(args))
if args.list_backends:
for k in backend.get_all_keyring():
print(k)
return
if args.disable:
core.disable()
return
if args.operation == 'diagnose':
self.diagnose()
return
self._check_args()
self._load_spec_backend()
method = getattr(self, f'do_{self.operation}', self.invalid_op)
return method()
def _check_args(self):
if self.operation:
if self.service is None or self.username is None:
self.parser.error(f"{self.operation} requires service and username")
def do_get(self):
password = get_password(self.service, self.username)
if password is None:
raise SystemExit(1)
print(password)
def do_set(self):
password = self.input_password(
f"Password for '{self.username}' in '{self.service}': "
)
set_password(self.service, self.username, password)
def do_del(self):
delete_password(self.service, self.username)
def diagnose(self):
config_root = core._config_path()
if config_root.exists():
print("config path:", config_root)
else:
print("config path:", config_root, "(absent)")
print("data root:", platform_.data_root())
def invalid_op(self):
self.parser.error(f"Specify operation ({', '.join(self.parser._operations)}).")
def _load_spec_backend(self):
if self.keyring_backend is None:
return
try:
if self.keyring_path:
sys.path.insert(0, self.keyring_path)
set_keyring(core.load_keyring(self.keyring_backend))
except (Exception,) as exc:
# Tons of things can go wrong here:
# ImportError when using "fjkljfljkl"
# AttributeError when using "os.path.bar"
# TypeError when using "__builtins__.str"
# So, we play on the safe side, and catch everything.
self.parser.error(f"Unable to load specified keyring: {exc}")
def input_password(self, prompt):
"""Retrieve password from input."""
return self.pass_from_pipe() or getpass.getpass(prompt)
@classmethod
def pass_from_pipe(cls):
"""Return password from pipe if not on TTY, else False."""
is_pipe = not sys.stdin.isatty()
return is_pipe and cls.strip_last_newline(sys.stdin.read())
@staticmethod
def strip_last_newline(str):
r"""Strip one last newline, if present.
>>> CommandLineTool.strip_last_newline('foo')
'foo'
>>> CommandLineTool.strip_last_newline('foo\n')
'foo'
"""
slc = slice(-1 if str.endswith('\n') else None)
return str[slc]
def main(argv=None):
"""Main command line interface."""
if argv is None:
argv = sys.argv[1:]
cli = CommandLineTool()
return cli.run(argv)
if __name__ == '__main__':
sys.exit(main())
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