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Filename : pam_pureftpd_hook.py
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#!/opt/imunify360/venv/bin/python3
import argparse
import os
import re
import subprocess

from pam_i360.internals import logger_init

PUREFTPD_CONFIG = "/etc/pure-ftpd.conf"
CPANEL_CONFIG = "/var/cpanel/cpanel.config"
IMUNIFY360_CONFIG = "/etc/sysconfig/imunify360/imunify360-merged.config"

logger = logger_init()

def is_pureftpd_enabled():
    if not os.path.isfile(IMUNIFY360_CONFIG):
        return False

    ftp_protection = re.compile(
        rb"^(?!#).*ftp_protection:[^\S\r\n]*true",
        re.MULTILINE
    )

    return ftp_protection.search(
               open(IMUNIFY360_CONFIG, "rb").read()) is not None


def is_imunify360_pam_pureftpd_enabled():
    imunify360_sock = re.compile(
        rb"^(?!#).*\/var\/run\/ftpd.imunify360.sock",
        re.MULTILINE
    )
    return imunify360_sock.search(
               open(PUREFTPD_CONFIG, "rb").read()) is not None


def enable_pureftpd(no_restart=False, timeout=60):
    cmd = [
        "/usr/sbin/imunify360-pam",
        "enable-pureftpd",
    ]
    if no_restart:
        cmd.append("--no-restart-pureftpd")

    try:
        return subprocess.run(cmd, timeout=timeout, check=True)
    except subprocess.TimeoutExpired as e:
        return subprocess.CompletedProcess(
            e.cmd, returncode=None, stdout=e.stdout, stderr=e.stderr
        )


def main():
    parser = argparse.ArgumentParser()
    parser.add_argument(
        "-n",
        "--no-restart",
        dest="norestart",
        action="store_true",
        help="Don't restart pureftpd",
    )
    args = parser.parse_args()
    no_restart = args.norestart

    with open(CPANEL_CONFIG, "r") as cpcfg:
        data = cpcfg.read()
        if not "ftpserver=pure-ftpd" in data:
            return

        if not os.path.isfile(PUREFTPD_CONFIG):
            return
        imunify360_pam_pureftpd_enabled = is_imunify360_pam_pureftpd_enabled()

        pureftpd_enabled = is_pureftpd_enabled()

        if pureftpd_enabled and not imunify360_pam_pureftpd_enabled:
            enable_pureftpd(no_restart, timeout=60)


if __name__ == "__main__":
    try:
        main()
    except Exception as e:
        logger.error("failed to check and enable pure-ftpd: %s", e)