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#!/usr/bin/env python3
import argparse
from jinja2 import Template, Environment, FileSystemLoader
import pathlib
def main():
parser = argparse.ArgumentParser(description='basic Gentoo PAM configuration files')
parser.add_argument('--gnome-keyring', action="store_true", help='enable pam_gnome_keyring.so module')
parser.add_argument('--caps', action="store_true", help='enable pam_cap.so module')
parser.add_argument('--homed', action="store_true", help='enable pam_systemd_homed.so module')
parser.add_argument('--passwdqc', action="store_true", help='enable pam_passwdqc.so module')
parser.add_argument('--pwhistory', action="store_true", help='enable pam_pwhistory.so module')
parser.add_argument('--pwquality', action="store_true", help='enable pam_pwquality.so module')
parser.add_argument('--elogind', action="store_true", help='enable pam_elogind.so module')
parser.add_argument('--systemd', action="store_true", help='enable pam_systemd.so module')
parser.add_argument('--homed', action="store_true", help='enable pam_systemd_home.so module')
parser.add_argument('--selinux', action="store_true", help='enable pam_selinux.so module')
parser.add_argument('--mktemp', action="store_true", help='enable pam_mktemp.so module')
parser.add_argument('--pam-ssh', action="store_true", help='enable pam_ssh.so module')
parser.add_argument('--securetty', action="store_true", help='enable pam_securetty.so module')
parser.add_argument('--sha512', action="store_true", help='enable sha512 option for pam_unix.so module')
parser.add_argument('--krb5', action="store_true", help='enable pam_krb5.so module')
parser.add_argument('--minimal', action="store_true", help='install minimalistic PAM stack')
parser.add_argument('--debug', action="store_true", help='enable debug for selected modules')
parser.add_argument('--nullok', action="store_true", help='enable nullok option for pam_unix.so module')
parsed_args = parser.parse_args()
processed = process_args(parsed_args)
parse_templates(processed)
def process_args(args):
# make sure that output directory exists
pathlib.Path("stack").mkdir(parents=True, exist_ok=True)
blank_variables = [
"krb5_authtok",
"unix_authtok",
"unix_extended_encryption",
"likeauth",
"nullok"
]
# create a blank dictionary
# then add in our parsed args
output = dict.fromkeys(blank_variables, "")
output.update(vars(args))
# unconditional variables
output["likeauth"] = "likeauth"
output["unix_authtok"] = "use_authtok"
if args.debug:
output["debug"] = "debug"
if args.nullok:
output["nullok"] = "nullok"
if args.krb5:
output["krb5_params"] = "{0} ignore_root try_first_pass".format("debug").strip()
if args.sha512:
output["unix_extended_encryption"] = "sha512 shadow"
else:
output["unix_extended_encryption"] = "md5 shadow"
return output
def parse_templates(processed_args):
load = FileSystemLoader('')
env = Environment(loader=load, trim_blocks=True, lstrip_blocks=True, keep_trailing_newline=True)
templates = [
"login",
"other",
"passwd",
"system-local-login",
"system-remote-login",
"su",
"system-auth",
"system-login",
"system-services"
]
for template_name in templates:
template = env.get_template('templates/{0}.tpl'.format(template_name))
with open('stack/{0}'.format(template_name), "w+") as output:
rendered_template = template.render(processed_args)
# Strip all intermediate lines to not worry about appeasing Jinja
lines = rendered_template.split("\n")
lines = [line.strip() for line in lines if line]
rendered_template = "\n".join(lines)
if rendered_template:
output.write(rendered_template + "\n")
if __name__ == "__main__":
main()
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