mirror of
https://github.com/NixOS/nixpkgs.git
synced 2024-11-22 15:03:28 +00:00
29 lines
900 B
Python
29 lines
900 B
Python
|
#!/usr/bin/env python
|
||
|
|
|
||
|
|
import argparse
|
||
|
|
from argparse import RawDescriptionHelpFormatter
|
||
|
|
|
||
|
|
description = """
|
||
|
|
Replace a string in one file with a secret from a second file.
|
||
|
|
|
||
|
|
Since the secret is read from a file, it won't be leaked through
|
||
|
|
'/proc/<pid>/cmdline', unlike when 'sed' or 'replace' is used.
|
||
|
|
"""
|
||
|
|
|
||
|
|
parser = argparse.ArgumentParser(
|
||
|
|
description=description,
|
||
|
|
formatter_class=RawDescriptionHelpFormatter
|
||
|
|
)
|
||
|
|
parser.add_argument("string_to_replace", help="the string to replace")
|
||
|
|
parser.add_argument("secret_file", help="the file containing the secret")
|
||
|
|
parser.add_argument("file", help="the file to perform the replacement on")
|
||
|
|
args = parser.parse_args()
|
||
|
|
|
||
|
|
with open(args.secret_file) as sf, open(args.file, 'r+') as f:
|
||
|
|
old = f.read()
|
||
|
|
secret = sf.read().strip("\n")
|
||
|
|
new_content = old.replace(args.string_to_replace, secret)
|
||
|
|
f.seek(0)
|
||
|
|
f.write(new_content)
|
||
|
|
f.truncate()
|