get-secret.py - mozsearch

#!/usr/bin/env python3

# This Source Code Form is subject to the terms of the Mozilla Public

# License, v. 2.0. If a copy of the MPL was not distributed with this

# file, You can obtain one at http://mozilla.org/MPL/2.0/.

import argparse

import base64

import errno

import json

import os

import taskcluster

def write_secret_to_file(path, data, key, base64decode=False, json_secret=False, append=False, prefix=''):

    path = os.path.abspath(os.path.join(os.path.dirname(__file__), '../../' + path))

    try:

        os.makedirs(os.path.dirname(path))

    except OSError as error:

        if error.errno != errno.EEXIST:

            raise

    print(f"Outputting secret to: {path}")

    with open(path, 'a' if append else 'w') as f:

        value = data['secret'][key]

        if base64decode:

            value = base64.b64decode(value)

        if json_secret:

            value = json.dumps(value)

        f.write(prefix + value)

def fetch_secret_from_taskcluster(name):

    try:

        secrets = taskcluster.Secrets({

            # BaseUrl is still needed for tasks that haven't migrated to taskgraph yet.

            'baseUrl': 'http://taskcluster/secrets/v1',

})

    except taskcluster.exceptions.TaskclusterFailure:

        # taskcluster library >=5 errors out when `baseUrl` is used

        secrets = taskcluster.Secrets({

            'rootUrl': os.environ.get('TASKCLUSTER_PROXY_URL', 'https://taskcluster.net'),

})

    return secrets.get(name)

def main():

    parser = argparse.ArgumentParser(

        description='Fetch a taskcluster secret value and save it to a file.')

    parser.add_argument('-s', dest="secret", action="store", help="name of the secret")

    parser.add_argument('-k', dest='key', action="store", help='key of the secret')

    parser.add_argument('-f', dest="path", action="store", help='file to save secret to')

    parser.add_argument('--decode', dest="decode", action="store_true", default=False, help='base64 decode secret before saving to file')

    parser.add_argument('--json', dest="json", action="store_true", default=False, help='serializes the secret to JSON format')

    parser.add_argument('--append', dest="append", action="store_true", default=False, help='append secret to existing file')

    parser.add_argument('--prefix', dest="prefix", action="store", default="", help='add prefix when writing secret to file')

    result = parser.parse_args()

    secret = fetch_secret_from_taskcluster(result.secret)

    write_secret_to_file(result.path, secret, result.key, result.decode, result.json, result.append, result.prefix)

if __name__ == "__main__":

    main()