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#!/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.getcwd(), 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)
if isinstance(value, bytes):
value = value.decode("utf-8")
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()
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