FreedomBox/plinth/db/dbconfig.py
Frederico Gomes 9a524b331b
db: Create a utility to get credentials from dbconfig
Create helper function that uses Augeas Shellvars to parse dbconfig-common
files.

Signed-off-by: Frederico Gomes fredericojfgomes@gmail.com
[sunil: Fix quotes not getting removed from values]
[sunil: Add test case]
Signed-off-by: Sunil Mohan Adapa <sunil@medhas.org>
Reviewed-by: Sunil Mohan Adapa <sunil@medhas.org>
2026-03-02 12:55:54 -08:00

41 lines
1.3 KiB
Python

# SPDX-License-Identifier: AGPL-3.0-or-later
"""Utilities for parsing dbconfig-common files with Augeas."""
import pathlib
import augeas
def get_credentials(dbconfig_path: str) -> dict[str, str]:
"""Parse dbconfig-common file with Augeas Shellvars lens."""
if not pathlib.Path(dbconfig_path).is_file():
raise FileNotFoundError(f'DB config not found: {dbconfig_path}')
aug = _load_augeas(dbconfig_path)
required = ['dbc_dbuser', 'dbc_dbpass', 'dbc_dbname']
credentials = {}
for key in required + ['dbc_dbserver']:
credentials[key] = aug.get(key).strip('\'"')
if not all(credentials.get(key) for key in required):
raise ValueError('Missing required dbconfig-common credentials')
return {
'user': credentials['dbc_dbuser'],
'password': credentials['dbc_dbpass'],
'database': credentials['dbc_dbname'],
'host': credentials['dbc_dbserver'] or 'localhost'
}
def _load_augeas(config_path: str):
"""Initialize Augeas."""
aug = augeas.Augeas(flags=augeas.Augeas.NO_LOAD +
augeas.Augeas.NO_MODL_AUTOLOAD)
pathstr = str(config_path)
aug.transform('Shellvars', pathstr)
aug.set('/augeas/context', f'/files{pathstr}')
aug.load()
return aug