parsedmarc/parsedmarc/cli.py

#!/usr/bin/env python3
# -*- coding: utf-8 -*-

"""A CLI for parsing DMARC reports"""

import http.client
import json
import logging
import os
import sys
from argparse import ArgumentParser, Namespace
from configparser import ConfigParser
from glob import glob
from multiprocessing import Pipe, Process
from ssl import CERT_NONE, create_default_context

import yaml
from tqdm import tqdm

from parsedmarc import (
    SEEN_AGGREGATE_REPORT_IDS,
    InvalidDMARCReport,
    ParserError,
    __version__,
    elastic,
    email_results,
    gelf,
    get_dmarc_reports_from_mailbox,
    get_dmarc_reports_from_mbox,
    kafkaclient,
    loganalytics,
    opensearch,
    parse_report_file,
    s3,
    save_output,
    splunk,
    syslog,
    watch_inbox,
    webhook,
)
from parsedmarc.log import logger
from parsedmarc.mail import (
    GmailConnection,
    IMAPConnection,
    MaildirConnection,
    MSGraphConnection,
)
from parsedmarc.mail.graph import AuthMethod
from parsedmarc.types import ParsingResults
from parsedmarc.utils import get_base_domain, get_reverse_dns, is_mbox

# Increase the max header limit for very large emails. `_MAXHEADERS` is a
# private stdlib attribute and may not exist in type stubs.
setattr(http.client, "_MAXHEADERS", 200)

formatter = logging.Formatter(
    fmt="%(levelname)8s:%(filename)s:%(lineno)d:%(message)s",
    datefmt="%Y-%m-%d:%H:%M:%S",
)
handler = logging.StreamHandler()
handler.setFormatter(formatter)
logger.addHandler(handler)


def _str_to_list(s):
    """Converts a comma separated string to a list"""
    _list = s.split(",")
    return list(map(lambda i: i.lstrip(), _list))


def _configure_logging(log_level, log_file=None):
    """
    Configure logging for the current process.
    This is needed for child processes to properly log messages.

    Args:
        log_level: The logging level (e.g., logging.DEBUG, logging.WARNING)
        log_file: Optional path to log file
    """
    # Get the logger
    from parsedmarc.log import logger

    # Set the log level
    logger.setLevel(log_level)

    # Add StreamHandler with formatter if not already present
    # Check if we already have a StreamHandler to avoid duplicates
    # Use exact type check to distinguish from FileHandler subclass
    has_stream_handler = any(type(h) is logging.StreamHandler for h in logger.handlers)

    if not has_stream_handler:
        formatter = logging.Formatter(
            fmt="%(levelname)8s:%(filename)s:%(lineno)d:%(message)s",
            datefmt="%Y-%m-%d:%H:%M:%S",
        )
        handler = logging.StreamHandler()
        handler.setFormatter(formatter)
        logger.addHandler(handler)

    # Add FileHandler if log_file is specified
    if log_file:
        try:
            fh = logging.FileHandler(log_file, "a")
            formatter = logging.Formatter(
                "%(asctime)s - %(levelname)s - [%(filename)s:%(lineno)d] - %(message)s"
            )
            fh.setFormatter(formatter)
            logger.addHandler(fh)
        except (IOError, OSError, PermissionError) as error:
            logger.warning("Unable to write to log file: {}".format(error))


def cli_parse(
    file_path,
    sa,
    nameservers,
    dns_timeout,
    ip_db_path,
    offline,
    always_use_local_files,
    reverse_dns_map_path,
    reverse_dns_map_url,
    normalize_timespan_threshold_hours,
    conn,
    log_level=logging.ERROR,
    log_file=None,
):
    """Separated this function for multiprocessing

    Args:
        file_path: Path to the report file
        sa: Strip attachment payloads flag
        nameservers: List of nameservers
        dns_timeout: DNS timeout
        ip_db_path: Path to IP database
        offline: Offline mode flag
        always_use_local_files: Always use local files flag
        reverse_dns_map_path: Path to reverse DNS map
        reverse_dns_map_url: URL to reverse DNS map
        normalize_timespan_threshold_hours: Timespan threshold
        conn: Pipe connection for IPC
        log_level: Logging level for this process
        log_file: Optional path to log file
    """
    # Configure logging in this child process
    _configure_logging(log_level, log_file)

    try:
        file_results = parse_report_file(
            file_path,
            ip_db_path=ip_db_path,
            offline=offline,
            always_use_local_files=always_use_local_files,
            reverse_dns_map_path=reverse_dns_map_path,
            reverse_dns_map_url=reverse_dns_map_url,
            nameservers=nameservers,
            dns_timeout=dns_timeout,
            strip_attachment_payloads=sa,
            normalize_timespan_threshold_hours=normalize_timespan_threshold_hours,
        )
        conn.send([file_results, file_path])
    except ParserError as error:
        conn.send([error, file_path])
    finally:
        conn.close()


def _main():
    """Called when the module is executed"""

    def get_index_prefix(report):
        domain = None
        if index_prefix_domain_map is None:
            return None
        if "policy_published" in report:
            domain = report["policy_published"]["domain"]
        elif "reported_domain" in report:
            domain = report("reported_domain")
        elif "policies" in report:
            domain = report["policies"][0]["domain"]
        if domain:
            domain = get_base_domain(domain)
            for prefix in index_prefix_domain_map:
                if domain in index_prefix_domain_map[prefix]:
                    prefix = (
                        prefix.lower()
                        .strip()
                        .strip("_")
                        .replace(" ", "_")
                        .replace("-", "_")
                    )
                    prefix = f"{prefix}_"
                    return prefix
        return None

    def process_reports(reports_):
        output_errors = []

        def log_output_error(destination, error):
            message = f"{destination} Error: {error}"
            logger.error(message)
            output_errors.append(message)

        indent_value = 2 if opts.prettify_json else None
        output_str = "{0}\n".format(
            json.dumps(reports_, ensure_ascii=False, indent=indent_value)
        )

        if not opts.silent:
            print(output_str)
        if opts.output:
            save_output(
                reports_,
                output_directory=opts.output,
                aggregate_json_filename=opts.aggregate_json_filename,
                failure_json_filename=opts.failure_json_filename,
                smtp_tls_json_filename=opts.smtp_tls_json_filename,
                aggregate_csv_filename=opts.aggregate_csv_filename,
                failure_csv_filename=opts.failure_csv_filename,
                smtp_tls_csv_filename=opts.smtp_tls_csv_filename,
            )
        if opts.save_aggregate:
            for report in reports_["aggregate_reports"]:
                try:
                    if opts.elasticsearch_hosts:
                        shards = opts.elasticsearch_number_of_shards
                        replicas = opts.elasticsearch_number_of_replicas
                        elastic.save_aggregate_report_to_elasticsearch(
                            report,
                            index_suffix=opts.elasticsearch_index_suffix,
                            index_prefix=opts.elasticsearch_index_prefix
                            or get_index_prefix(report),
                            monthly_indexes=opts.elasticsearch_monthly_indexes,
                            number_of_shards=shards,
                            number_of_replicas=replicas,
                        )
                except elastic.AlreadySaved as warning:
                    logger.warning(warning.__str__())
                except elastic.ElasticsearchError as error_:
                    log_output_error("Elasticsearch", error_.__str__())
                except Exception as error_:
                    log_output_error("Elasticsearch exception", error_.__str__())

                try:
                    if opts.opensearch_hosts:
                        shards = opts.opensearch_number_of_shards
                        replicas = opts.opensearch_number_of_replicas
                        opensearch.save_aggregate_report_to_opensearch(
                            report,
                            index_suffix=opts.opensearch_index_suffix,
                            index_prefix=opts.opensearch_index_prefix
                            or get_index_prefix(report),
                            monthly_indexes=opts.opensearch_monthly_indexes,
                            number_of_shards=shards,
                            number_of_replicas=replicas,
                        )
                except opensearch.AlreadySaved as warning:
                    logger.warning(warning.__str__())
                except opensearch.OpenSearchError as error_:
                    log_output_error("OpenSearch", error_.__str__())
                except Exception as error_:
                    log_output_error("OpenSearch exception", error_.__str__())

                try:
                    if opts.kafka_hosts:
                        kafka_client.save_aggregate_reports_to_kafka(
                            report, kafka_aggregate_topic
                        )
                except Exception as error_:
                    log_output_error("Kafka", error_.__str__())

                try:
                    if opts.s3_bucket:
                        s3_client.save_aggregate_report_to_s3(report)
                except Exception as error_:
                    log_output_error("S3", error_.__str__())

                try:
                    if opts.syslog_server:
                        syslog_client.save_aggregate_report_to_syslog(report)
                except Exception as error_:
                    log_output_error("Syslog", error_.__str__())

                try:
                    if opts.gelf_host:
                        gelf_client.save_aggregate_report_to_gelf(report)
                except Exception as error_:
                    log_output_error("GELF", error_.__str__())

                try:
                    if opts.webhook_aggregate_url:
                        indent_value = 2 if opts.prettify_json else None
                        webhook_client.save_aggregate_report_to_webhook(
                            json.dumps(report, ensure_ascii=False, indent=indent_value)
                        )
                except Exception as error_:
                    log_output_error("Webhook", error_.__str__())

            if opts.hec:
                try:
                    aggregate_reports_ = reports_["aggregate_reports"]
                    if len(aggregate_reports_) > 0:
                        hec_client.save_aggregate_reports_to_splunk(aggregate_reports_)
                except splunk.SplunkError as e:
                    log_output_error("Splunk HEC", e.__str__())

        if opts.save_failure:
            for report in reports_["failure_reports"]:
                try:
                    shards = opts.elasticsearch_number_of_shards
                    replicas = opts.elasticsearch_number_of_replicas
                    if opts.elasticsearch_hosts:
                        elastic.save_failure_report_to_elasticsearch(
                            report,
                            index_suffix=opts.elasticsearch_index_suffix,
                            index_prefix=opts.elasticsearch_index_prefix
                            or get_index_prefix(report),
                            monthly_indexes=opts.elasticsearch_monthly_indexes,
                            number_of_shards=shards,
                            number_of_replicas=replicas,
                        )
                except elastic.AlreadySaved as warning:
                    logger.warning(warning.__str__())
                except elastic.ElasticsearchError as error_:
                    log_output_error("Elasticsearch", error_.__str__())
                except InvalidDMARCReport as error_:
                    log_output_error("Invalid DMARC report", error_.__str__())

                try:
                    shards = opts.opensearch_number_of_shards
                    replicas = opts.opensearch_number_of_replicas
                    if opts.opensearch_hosts:
                        opensearch.save_failure_report_to_opensearch(
                            report,
                            index_suffix=opts.opensearch_index_suffix,
                            index_prefix=opts.opensearch_index_prefix
                            or get_index_prefix(report),
                            monthly_indexes=opts.opensearch_monthly_indexes,
                            number_of_shards=shards,
                            number_of_replicas=replicas,
                        )
                except opensearch.AlreadySaved as warning:
                    logger.warning(warning.__str__())
                except opensearch.OpenSearchError as error_:
                    log_output_error("OpenSearch", error_.__str__())
                except InvalidDMARCReport as error_:
                    log_output_error("Invalid DMARC report", error_.__str__())

                try:
                    if opts.kafka_hosts:
                        kafka_client.save_failure_reports_to_kafka(
                            report, kafka_failure_topic
                        )
                except Exception as error_:
                    log_output_error("Kafka", error_.__str__())

                try:
                    if opts.s3_bucket:
                        s3_client.save_failure_report_to_s3(report)
                except Exception as error_:
                    log_output_error("S3", error_.__str__())

                try:
                    if opts.syslog_server:
                        syslog_client.save_failure_report_to_syslog(report)
                except Exception as error_:
                    log_output_error("Syslog", error_.__str__())

                try:
                    if opts.gelf_host:
                        gelf_client.save_failure_report_to_gelf(report)
                except Exception as error_:
                    log_output_error("GELF", error_.__str__())

                try:
                    if opts.webhook_failure_url:
                        indent_value = 2 if opts.prettify_json else None
                        webhook_client.save_failure_report_to_webhook(
                            json.dumps(report, ensure_ascii=False, indent=indent_value)
                        )
                except Exception as error_:
                    log_output_error("Webhook", error_.__str__())

            if opts.hec:
                try:
                    failure_reports_ = reports_["failure_reports"]
                    if len(failure_reports_) > 0:
                        hec_client.save_failure_reports_to_splunk(failure_reports_)
                except splunk.SplunkError as e:
                    log_output_error("Splunk HEC", e.__str__())

        if opts.save_smtp_tls:
            for report in reports_["smtp_tls_reports"]:
                try:
                    shards = opts.elasticsearch_number_of_shards
                    replicas = opts.elasticsearch_number_of_replicas
                    if opts.elasticsearch_hosts:
                        elastic.save_smtp_tls_report_to_elasticsearch(
                            report,
                            index_suffix=opts.elasticsearch_index_suffix,
                            index_prefix=opts.elasticsearch_index_prefix
                            or get_index_prefix(report),
                            monthly_indexes=opts.elasticsearch_monthly_indexes,
                            number_of_shards=shards,
                            number_of_replicas=replicas,
                        )
                except elastic.AlreadySaved as warning:
                    logger.warning(warning.__str__())
                except elastic.ElasticsearchError as error_:
                    log_output_error("Elasticsearch", error_.__str__())
                except InvalidDMARCReport as error_:
                    log_output_error("Invalid DMARC report", error_.__str__())

                try:
                    shards = opts.opensearch_number_of_shards
                    replicas = opts.opensearch_number_of_replicas
                    if opts.opensearch_hosts:
                        opensearch.save_smtp_tls_report_to_opensearch(
                            report,
                            index_suffix=opts.opensearch_index_suffix,
                            index_prefix=opts.opensearch_index_prefix
                            or get_index_prefix(report),
                            monthly_indexes=opts.opensearch_monthly_indexes,
                            number_of_shards=shards,
                            number_of_replicas=replicas,
                        )
                except opensearch.AlreadySaved as warning:
                    logger.warning(warning.__str__())
                except opensearch.OpenSearchError as error_:
                    log_output_error("OpenSearch", error_.__str__())
                except InvalidDMARCReport as error_:
                    log_output_error("Invalid DMARC report", error_.__str__())

                try:
                    if opts.kafka_hosts:
                        kafka_client.save_smtp_tls_reports_to_kafka(
                            smtp_tls_reports, kafka_smtp_tls_topic
                        )
                except Exception as error_:
                    log_output_error("Kafka", error_.__str__())

                try:
                    if opts.s3_bucket:
                        s3_client.save_smtp_tls_report_to_s3(report)
                except Exception as error_:
                    log_output_error("S3", error_.__str__())

                try:
                    if opts.syslog_server:
                        syslog_client.save_smtp_tls_report_to_syslog(report)
                except Exception as error_:
                    log_output_error("Syslog", error_.__str__())

                try:
                    if opts.gelf_host:
                        gelf_client.save_smtp_tls_report_to_gelf(report)
                except Exception as error_:
                    log_output_error("GELF", error_.__str__())

                try:
                    if opts.webhook_smtp_tls_url:
                        indent_value = 2 if opts.prettify_json else None
                        webhook_client.save_smtp_tls_report_to_webhook(
                            json.dumps(report, ensure_ascii=False, indent=indent_value)
                        )
                except Exception as error_:
                    log_output_error("Webhook", error_.__str__())

            if opts.hec:
                try:
                    smtp_tls_reports_ = reports_["smtp_tls_reports"]
                    if len(smtp_tls_reports_) > 0:
                        hec_client.save_smtp_tls_reports_to_splunk(smtp_tls_reports_)
                except splunk.SplunkError as e:
                    log_output_error("Splunk HEC", e.__str__())

        if opts.la_dce:
            try:
                la_client = loganalytics.LogAnalyticsClient(
                    client_id=opts.la_client_id,
                    client_secret=opts.la_client_secret,
                    tenant_id=opts.la_tenant_id,
                    dce=opts.la_dce,
                    dcr_immutable_id=opts.la_dcr_immutable_id,
                    dcr_aggregate_stream=opts.la_dcr_aggregate_stream,
                    dcr_failure_stream=opts.la_dcr_failure_stream,
                    dcr_smtp_tls_stream=opts.la_dcr_smtp_tls_stream,
                )
                la_client.publish_results(
                    reports_,
                    opts.save_aggregate,
                    opts.save_failure,
                    opts.save_smtp_tls,
                )
            except loganalytics.LogAnalyticsException as e:
                log_output_error("Log Analytics", e.__str__())
            except Exception as e:
                log_output_error("Log Analytics", f"Unknown publishing error: {e}")

        if opts.fail_on_output_error and output_errors:
            raise ParserError(
                "Output destination failures detected: {0}".format(
                    " | ".join(output_errors)
                )
            )

    arg_parser = ArgumentParser(description="Parses DMARC reports")
    arg_parser.add_argument(
        "-c",
        "--config-file",
        help="a path to a configuration file (--silent implied)",
    )
    arg_parser.add_argument(
        "file_path",
        nargs="*",
        help="one or more paths to aggregate or failure "
        "report files, emails, or mbox files'",
    )
    strip_attachment_help = "remove attachment payloads from failure report output"
    arg_parser.add_argument(
        "--strip-attachment-payloads", help=strip_attachment_help, action="store_true"
    )
    arg_parser.add_argument(
        "-o", "--output", help="write output files to the given directory"
    )
    arg_parser.add_argument(
        "--aggregate-json-filename",
        help="filename for the aggregate JSON output file",
        default="aggregate.json",
    )
    arg_parser.add_argument(
        "--failure-json-filename",
        help="filename for the failure JSON output file",
        default="failure.json",
    )
    arg_parser.add_argument(
        "--smtp-tls-json-filename",
        help="filename for the SMTP TLS JSON output file",
        default="smtp_tls.json",
    )
    arg_parser.add_argument(
        "--aggregate-csv-filename",
        help="filename for the aggregate CSV output file",
        default="aggregate.csv",
    )
    arg_parser.add_argument(
        "--failure-csv-filename",
        help="filename for the failure CSV output file",
        default="failure.csv",
    )
    arg_parser.add_argument(
        "--smtp-tls-csv-filename",
        help="filename for the SMTP TLS CSV output file",
        default="smtp_tls.csv",
    )
    arg_parser.add_argument(
        "-n", "--nameservers", nargs="+", help="nameservers to query"
    )
    arg_parser.add_argument(
        "-t",
        "--dns_timeout",
        help="number of seconds to wait for an answer from DNS (default: 2.0)",
        type=float,
        default=2.0,
    )
    arg_parser.add_argument(
        "--offline",
        action="store_true",
        help="do not make online queries for geolocation  or  DNS",
    )
    arg_parser.add_argument(
        "-s", "--silent", action="store_true", help="only print errors"
    )
    arg_parser.add_argument(
        "-w",
        "--warnings",
        action="store_true",
        help="print warnings in addition to errors",
    )
    arg_parser.add_argument(
        "--verbose", action="store_true", help="more verbose output"
    )
    arg_parser.add_argument(
        "--debug", action="store_true", help="print debugging information"
    )
    arg_parser.add_argument("--log-file", default=None, help="output logging to a file")
    arg_parser.add_argument(
        "--no-prettify-json",
        action="store_false",
        dest="prettify_json",
        help="output JSON in a single line without indentation",
    )
    arg_parser.add_argument("-v", "--version", action="version", version=__version__)

    aggregate_reports = []
    failure_reports = []
    smtp_tls_reports = []

    args = arg_parser.parse_args()

    default_gmail_api_scope = "https://www.googleapis.com/auth/gmail.modify"

    opts = Namespace(
        file_path=args.file_path,
        config_file=args.config_file,
        offline=args.offline,
        strip_attachment_payloads=args.strip_attachment_payloads,
        output=args.output,
        aggregate_csv_filename=args.aggregate_csv_filename,
        aggregate_json_filename=args.aggregate_json_filename,
        failure_csv_filename=args.failure_csv_filename,
        failure_json_filename=args.failure_json_filename,
        smtp_tls_json_filename=args.smtp_tls_json_filename,
        smtp_tls_csv_filename=args.smtp_tls_csv_filename,
        nameservers=args.nameservers,
        dns_test_address="1.1.1.1",
        silent=args.silent,
        warnings=args.warnings,
        dns_timeout=args.dns_timeout,
        debug=args.debug,
        verbose=args.verbose,
        prettify_json=args.prettify_json,
        save_aggregate=False,
        save_failure=False,
        save_smtp_tls=False,
        mailbox_reports_folder="INBOX",
        mailbox_archive_folder="Archive",
        mailbox_watch=False,
        mailbox_delete=False,
        mailbox_test=False,
        mailbox_batch_size=10,
        mailbox_check_timeout=30,
        mailbox_since=None,
        imap_host=None,
        imap_skip_certificate_verification=False,
        imap_ssl=True,
        imap_port=993,
        imap_timeout=30,
        imap_max_retries=4,
        imap_user=None,
        imap_password=None,
        graph_auth_method=None,
        graph_user=None,
        graph_password=None,
        graph_client_id=None,
        graph_client_secret=None,
        graph_certificate_path=None,
        graph_certificate_password=None,
        graph_tenant_id=None,
        graph_mailbox=None,
        graph_allow_unencrypted_storage=False,
        graph_url="https://graph.microsoft.com",
        hec=None,
        hec_token=None,
        hec_index=None,
        hec_skip_certificate_verification=False,
        elasticsearch_hosts=None,
        elasticsearch_timeout=60,
        elasticsearch_number_of_shards=1,
        elasticsearch_number_of_replicas=0,
        elasticsearch_index_suffix=None,
        elasticsearch_index_prefix=None,
        elasticsearch_ssl=True,
        elasticsearch_ssl_cert_path=None,
        elasticsearch_monthly_indexes=False,
        elasticsearch_username=None,
        elasticsearch_password=None,
        elasticsearch_api_key=None,
        opensearch_hosts=None,
        opensearch_timeout=60,
        opensearch_number_of_shards=1,
        opensearch_number_of_replicas=0,
        opensearch_index_suffix=None,
        opensearch_index_prefix=None,
        opensearch_ssl=True,
        opensearch_ssl_cert_path=None,
        opensearch_monthly_indexes=False,
        opensearch_username=None,
        opensearch_password=None,
        opensearch_api_key=None,
        opensearch_auth_type="basic",
        opensearch_aws_region=None,
        opensearch_aws_service="es",
        kafka_hosts=None,
        kafka_username=None,
        kafka_password=None,
        kafka_aggregate_topic=None,
        kafka_failure_topic=None,
        kafka_smtp_tls_topic=None,
        kafka_ssl=False,
        kafka_skip_certificate_verification=False,
        smtp_host=None,
        smtp_port=25,
        smtp_ssl=False,
        smtp_skip_certificate_verification=False,
        smtp_user=None,
        smtp_password=None,
        smtp_from=None,
        smtp_to=[],
        smtp_subject="parsedmarc report",
        smtp_message="Please see the attached DMARC results.",
        s3_bucket=None,
        s3_path=None,
        s3_region_name=None,
        s3_endpoint_url=None,
        s3_access_key_id=None,
        s3_secret_access_key=None,
        syslog_server=None,
        syslog_port=None,
        syslog_protocol=None,
        syslog_cafile_path=None,
        syslog_certfile_path=None,
        syslog_keyfile_path=None,
        syslog_timeout=None,
        syslog_retry_attempts=None,
        syslog_retry_delay=None,
        gmail_api_credentials_file=None,
        gmail_api_token_file=None,
        gmail_api_include_spam_trash=False,
        gmail_api_paginate_messages=True,
        gmail_api_scopes=[],
        gmail_api_oauth2_port=8080,
        gmail_api_auth_mode="installed_app",
        gmail_api_service_account_user=None,
        maildir_path=None,
        maildir_create=False,
        log_file=args.log_file,
        n_procs=1,
        ip_db_path=None,
        always_use_local_files=False,
        reverse_dns_map_path=None,
        reverse_dns_map_url=None,
        la_client_id=None,
        la_client_secret=None,
        la_tenant_id=None,
        la_dce=None,
        la_dcr_immutable_id=None,
        la_dcr_aggregate_stream=None,
        la_dcr_failure_stream=None,
        la_dcr_smtp_tls_stream=None,
        gelf_host=None,
        gelf_port=None,
        gelf_mode=None,
        webhook_aggregate_url=None,
        webhook_failure_url=None,
        webhook_smtp_tls_url=None,
        webhook_timeout=60,
        normalize_timespan_threshold_hours=24.0,
        fail_on_output_error=False,
    )
    args = arg_parser.parse_args()

    if args.config_file:
        abs_path = os.path.abspath(args.config_file)
        if not os.path.exists(abs_path):
            logger.error("A file does not exist at {0}".format(abs_path))
            exit(-1)
        opts.silent = True
        config = ConfigParser()
        index_prefix_domain_map = None
        config.read(args.config_file)
        if "general" in config.sections():
            general_config = config["general"]
            if "silent" in general_config:
                opts.silent = bool(general_config.getboolean("silent"))
            if "normalize_timespan_threshold_hours" in general_config:
                opts.normalize_timespan_threshold_hours = general_config.getfloat(
                    "normalize_timespan_threshold_hours"
                )
            if "index_prefix_domain_map" in general_config:
                with open(general_config["index_prefix_domain_map"]) as f:
                    index_prefix_domain_map = yaml.safe_load(f)
            if "offline" in general_config:
                opts.offline = bool(general_config.getboolean("offline"))
            if "strip_attachment_payloads" in general_config:
                opts.strip_attachment_payloads = bool(
                    general_config.getboolean("strip_attachment_payloads")
                )
            if "output" in general_config:
                opts.output = general_config["output"]
            if "aggregate_json_filename" in general_config:
                opts.aggregate_json_filename = general_config["aggregate_json_filename"]
            if "failure_json_filename" in general_config:
                opts.failure_json_filename = general_config["failure_json_filename"]
            elif "forensic_json_filename" in general_config:
                opts.failure_json_filename = general_config["forensic_json_filename"]
            if "smtp_tls_json_filename" in general_config:
                opts.smtp_tls_json_filename = general_config["smtp_tls_json_filename"]
            if "aggregate_csv_filename" in general_config:
                opts.aggregate_csv_filename = general_config["aggregate_csv_filename"]
            if "failure_csv_filename" in general_config:
                opts.failure_csv_filename = general_config["failure_csv_filename"]
            elif "forensic_csv_filename" in general_config:
                opts.failure_csv_filename = general_config["forensic_csv_filename"]
            if "smtp_tls_csv_filename" in general_config:
                opts.smtp_tls_csv_filename = general_config["smtp_tls_csv_filename"]
            if "dns_timeout" in general_config:
                opts.dns_timeout = general_config.getfloat("dns_timeout")
                if opts.dns_timeout is None:
                    opts.dns_timeout = 2
            if "dns_test_address" in general_config:
                opts.dns_test_address = general_config["dns_test_address"]
            if "nameservers" in general_config:
                opts.nameservers = _str_to_list(general_config["nameservers"])
                # nameservers pre-flight check
                dummy_hostname = None
                try:
                    dummy_hostname = get_reverse_dns(
                        opts.dns_test_address,
                        nameservers=opts.nameservers,
                        timeout=opts.dns_timeout,
                    )
                except Exception as ns_error:
                    logger.critical("DNS pre-flight check failed: {}".format(ns_error))
                    exit(-1)
                if not dummy_hostname:
                    logger.critical(
                        "DNS pre-flight check failed: no PTR record for "
                        "{} from {}".format(opts.dns_test_address, opts.nameservers)
                    )
                    exit(-1)
            if "save_aggregate" in general_config:
                opts.save_aggregate = bool(general_config.getboolean("save_aggregate"))
            if "save_failure" in general_config:
                opts.save_failure = bool(general_config.getboolean("save_failure"))
            elif "save_forensic" in general_config:
                opts.save_failure = bool(general_config.getboolean("save_forensic"))
            if "save_smtp_tls" in general_config:
                opts.save_smtp_tls = bool(general_config.getboolean("save_smtp_tls"))
            if "debug" in general_config:
                opts.debug = bool(general_config.getboolean("debug"))
            if "verbose" in general_config:
                opts.verbose = bool(general_config.getboolean("verbose"))
            if "silent" in general_config:
                opts.silent = bool(general_config.getboolean("silent"))
            if "warnings" in general_config:
                opts.warnings = bool(general_config.getboolean("warnings"))
            if "fail_on_output_error" in general_config:
                opts.fail_on_output_error = bool(
                    general_config.getboolean("fail_on_output_error")
                )
            if "log_file" in general_config:
                opts.log_file = general_config["log_file"]
            if "n_procs" in general_config:
                opts.n_procs = general_config.getint("n_procs")
            if "ip_db_path" in general_config:
                opts.ip_db_path = general_config["ip_db_path"]
            else:
                opts.ip_db_path = None
            if "always_use_local_files" in general_config:
                opts.always_use_local_files = bool(
                    general_config.getboolean("always_use_local_files")
                )
            if "reverse_dns_map_path" in general_config:
                opts.reverse_dns_map_path = general_config["reverse_dns_path"]
            if "reverse_dns_map_url" in general_config:
                opts.reverse_dns_map_url = general_config["reverse_dns_url"]
            if "prettify_json" in general_config:
                opts.prettify_json = bool(general_config.getboolean("prettify_json"))

        if "mailbox" in config.sections():
            mailbox_config = config["mailbox"]
            if "msgraph" in config.sections():
                opts.mailbox_reports_folder = "Inbox"
            if "reports_folder" in mailbox_config:
                opts.mailbox_reports_folder = mailbox_config["reports_folder"]
            if "archive_folder" in mailbox_config:
                opts.mailbox_archive_folder = mailbox_config["archive_folder"]
            if "watch" in mailbox_config:
                opts.mailbox_watch = bool(mailbox_config.getboolean("watch"))
            if "delete" in mailbox_config:
                opts.mailbox_delete = bool(mailbox_config.getboolean("delete"))
            if "test" in mailbox_config:
                opts.mailbox_test = bool(mailbox_config.getboolean("test"))
            if "batch_size" in mailbox_config:
                opts.mailbox_batch_size = mailbox_config.getint("batch_size")
            if "check_timeout" in mailbox_config:
                opts.mailbox_check_timeout = mailbox_config.getint("check_timeout")
            if "since" in mailbox_config:
                opts.mailbox_since = mailbox_config["since"]

        if "imap" in config.sections():
            imap_config = config["imap"]
            if "watch" in imap_config:
                logger.warning(
                    "Starting in 8.0.0, the watch option has been "
                    "moved from the imap configuration section to "
                    "the mailbox configuration section."
                )
            if "host" in imap_config:
                opts.imap_host = imap_config["host"]
            else:
                logger.error("host setting missing from the imap config section")
                exit(-1)
            if "port" in imap_config:
                opts.imap_port = imap_config.getint("port")
            if "timeout" in imap_config:
                opts.imap_timeout = imap_config.getint("timeout")
            if "max_retries" in imap_config:
                opts.imap_max_retries = imap_config.getint("max_retries")
            if "ssl" in imap_config:
                opts.imap_ssl = bool(imap_config.getboolean("ssl"))
            if "skip_certificate_verification" in imap_config:
                opts.imap_skip_certificate_verification = bool(
                    imap_config.getboolean("skip_certificate_verification")
                )
            if "user" in imap_config:
                opts.imap_user = imap_config["user"]
            else:
                logger.critical("user setting missing from the imap config section")
                exit(-1)
            if "password" in imap_config:
                opts.imap_password = imap_config["password"]
            else:
                logger.critical("password setting missing from the imap config section")
                exit(-1)
            if "reports_folder" in imap_config:
                opts.mailbox_reports_folder = imap_config["reports_folder"]
                logger.warning(
                    "Use of the reports_folder option in the imap "
                    "configuration section has been deprecated. "
                    "Use this option in the mailbox configuration "
                    "section instead."
                )
            if "archive_folder" in imap_config:
                opts.mailbox_archive_folder = imap_config["archive_folder"]
                logger.warning(
                    "Use of the archive_folder option in the imap "
                    "configuration section has been deprecated. "
                    "Use this option in the mailbox configuration "
                    "section instead."
                )
            if "watch" in imap_config:
                opts.mailbox_watch = bool(imap_config.getboolean("watch"))
                logger.warning(
                    "Use of the watch option in the imap "
                    "configuration section has been deprecated. "
                    "Use this option in the mailbox configuration "
                    "section instead."
                )
            if "delete" in imap_config:
                logger.warning(
                    "Use of the delete option in the imap "
                    "configuration section has been deprecated. "
                    "Use this option in the mailbox configuration "
                    "section instead."
                )
            if "test" in imap_config:
                opts.mailbox_test = bool(imap_config.getboolean("test"))
                logger.warning(
                    "Use of the test option in the imap "
                    "configuration section has been deprecated. "
                    "Use this option in the mailbox configuration "
                    "section instead."
                )
            if "batch_size" in imap_config:
                opts.mailbox_batch_size = imap_config.getint("batch_size")
                logger.warning(
                    "Use of the batch_size option in the imap "
                    "configuration section has been deprecated. "
                    "Use this option in the mailbox configuration "
                    "section instead."
                )

        if "msgraph" in config.sections():
            graph_config = config["msgraph"]
            opts.graph_token_file = graph_config.get("token_file", ".token")

            if "auth_method" not in graph_config:
                logger.info(
                    "auth_method setting missing from the "
                    "msgraph config section "
                    "defaulting to UsernamePassword"
                )
                opts.graph_auth_method = AuthMethod.UsernamePassword.name
            else:
                opts.graph_auth_method = graph_config["auth_method"]

            if opts.graph_auth_method == AuthMethod.UsernamePassword.name:
                if "user" in graph_config:
                    opts.graph_user = graph_config["user"]
                else:
                    logger.critical(
                        "user setting missing from the msgraph config section"
                    )
                    exit(-1)
                if "password" in graph_config:
                    opts.graph_password = graph_config["password"]
                else:
                    logger.critical(
                        "password setting missing from the msgraph config section"
                    )
                if "client_secret" in graph_config:
                    opts.graph_client_secret = graph_config["client_secret"]
                else:
                    logger.critical(
                        "client_secret setting missing from the msgraph config section"
                    )
                    exit(-1)

            if opts.graph_auth_method == AuthMethod.DeviceCode.name:
                if "user" in graph_config:
                    opts.graph_user = graph_config["user"]

            if opts.graph_auth_method != AuthMethod.UsernamePassword.name:
                if "tenant_id" in graph_config:
                    opts.graph_tenant_id = graph_config["tenant_id"]
                else:
                    logger.critical(
                        "tenant_id setting missing from the msgraph config section"
                    )
                    exit(-1)

            if opts.graph_auth_method == AuthMethod.ClientSecret.name:
                if "client_secret" in graph_config:
                    opts.graph_client_secret = graph_config["client_secret"]
                else:
                    logger.critical(
                        "client_secret setting missing from the msgraph config section"
                    )
                    exit(-1)

            if opts.graph_auth_method == AuthMethod.Certificate.name:
                if "certificate_path" in graph_config:
                    opts.graph_certificate_path = graph_config["certificate_path"]
                else:
                    logger.critical(
                        "certificate_path setting missing from the msgraph config section"
                    )
                    exit(-1)
                if "certificate_password" in graph_config:
                    opts.graph_certificate_password = graph_config[
                        "certificate_password"
                    ]

            if "client_id" in graph_config:
                opts.graph_client_id = graph_config["client_id"]
            else:
                logger.critical(
                    "client_id setting missing from the msgraph config section"
                )
                exit(-1)

            if "mailbox" in graph_config:
                opts.graph_mailbox = graph_config["mailbox"]
            elif opts.graph_auth_method != AuthMethod.UsernamePassword.name:
                logger.critical(
                    "mailbox setting missing from the msgraph config section"
                )
                exit(-1)

            if "graph_url" in graph_config:
                opts.graph_url = graph_config["graph_url"]

            if "allow_unencrypted_storage" in graph_config:
                opts.graph_allow_unencrypted_storage = bool(
                    graph_config.getboolean("allow_unencrypted_storage")
                )

        if "elasticsearch" in config:
            elasticsearch_config = config["elasticsearch"]
            if "hosts" in elasticsearch_config:
                opts.elasticsearch_hosts = _str_to_list(elasticsearch_config["hosts"])
            else:
                logger.critical(
                    "hosts setting missing from the elasticsearch config section"
                )
                exit(-1)
            if "timeout" in elasticsearch_config:
                timeout = elasticsearch_config.getfloat("timeout")
                opts.elasticsearch_timeout = timeout
            if "number_of_shards" in elasticsearch_config:
                number_of_shards = elasticsearch_config.getint("number_of_shards")
                opts.elasticsearch_number_of_shards = number_of_shards
                if "number_of_replicas" in elasticsearch_config:
                    number_of_replicas = elasticsearch_config.getint(
                        "number_of_replicas"
                    )
                    opts.elasticsearch_number_of_replicas = number_of_replicas
            if "index_suffix" in elasticsearch_config:
                opts.elasticsearch_index_suffix = elasticsearch_config["index_suffix"]
            if "index_prefix" in elasticsearch_config:
                opts.elasticsearch_index_prefix = elasticsearch_config["index_prefix"]
            if "monthly_indexes" in elasticsearch_config:
                monthly = bool(elasticsearch_config.getboolean("monthly_indexes"))
                opts.elasticsearch_monthly_indexes = monthly
            if "ssl" in elasticsearch_config:
                opts.elasticsearch_ssl = bool(elasticsearch_config.getboolean("ssl"))
            if "cert_path" in elasticsearch_config:
                opts.elasticsearch_ssl_cert_path = elasticsearch_config["cert_path"]
            if "user" in elasticsearch_config:
                opts.elasticsearch_username = elasticsearch_config["user"]
            if "password" in elasticsearch_config:
                opts.elasticsearch_password = elasticsearch_config["password"]
            # Until 8.20
            if "apiKey" in elasticsearch_config:
                opts.elasticsearch_api_key = elasticsearch_config["apiKey"]
            # Since 8.20
            if "api_key" in elasticsearch_config:
                opts.elasticsearch_api_key = elasticsearch_config["api_key"]

        if "opensearch" in config:
            opensearch_config = config["opensearch"]
            if "hosts" in opensearch_config:
                opts.opensearch_hosts = _str_to_list(opensearch_config["hosts"])
            else:
                logger.critical(
                    "hosts setting missing from the opensearch config section"
                )
                exit(-1)
            if "timeout" in opensearch_config:
                timeout = opensearch_config.getfloat("timeout")
                opts.opensearch_timeout = timeout
            if "number_of_shards" in opensearch_config:
                number_of_shards = opensearch_config.getint("number_of_shards")
                opts.opensearch_number_of_shards = number_of_shards
                if "number_of_replicas" in opensearch_config:
                    number_of_replicas = opensearch_config.getint("number_of_replicas")
                    opts.opensearch_number_of_replicas = number_of_replicas
            if "index_suffix" in opensearch_config:
                opts.opensearch_index_suffix = opensearch_config["index_suffix"]
            if "index_prefix" in opensearch_config:
                opts.opensearch_index_prefix = opensearch_config["index_prefix"]
            if "monthly_indexes" in opensearch_config:
                monthly = bool(opensearch_config.getboolean("monthly_indexes"))
                opts.opensearch_monthly_indexes = monthly
            if "ssl" in opensearch_config:
                opts.opensearch_ssl = bool(opensearch_config.getboolean("ssl"))
            if "cert_path" in opensearch_config:
                opts.opensearch_ssl_cert_path = opensearch_config["cert_path"]
            if "user" in opensearch_config:
                opts.opensearch_username = opensearch_config["user"]
            if "password" in opensearch_config:
                opts.opensearch_password = opensearch_config["password"]
            # Until 8.20
            if "apiKey" in opensearch_config:
                opts.opensearch_api_key = opensearch_config["apiKey"]
            # Since 8.20
            if "api_key" in opensearch_config:
                opts.opensearch_api_key = opensearch_config["api_key"]
            if "auth_type" in opensearch_config:
                opts.opensearch_auth_type = opensearch_config["auth_type"].strip().lower()
            elif "authentication_type" in opensearch_config:
                opts.opensearch_auth_type = (
                    opensearch_config["authentication_type"].strip().lower()
                )
            if "aws_region" in opensearch_config:
                opts.opensearch_aws_region = opensearch_config["aws_region"].strip()
            if "aws_service" in opensearch_config:
                opts.opensearch_aws_service = opensearch_config["aws_service"].strip()

        if "splunk_hec" in config.sections():
            hec_config = config["splunk_hec"]
            if "url" in hec_config:
                opts.hec = hec_config["url"]
            else:
                logger.critical(
                    "url setting missing from the splunk_hec config section"
                )
                exit(-1)
            if "token" in hec_config:
                opts.hec_token = hec_config["token"]
            else:
                logger.critical(
                    "token setting missing from the splunk_hec config section"
                )
                exit(-1)
            if "index" in hec_config:
                opts.hec_index = hec_config["index"]
            else:
                logger.critical(
                    "index setting missing from the splunk_hec config section"
                )
                exit(-1)
            if "skip_certificate_verification" in hec_config:
                opts.hec_skip_certificate_verification = hec_config[
                    "skip_certificate_verification"
                ]

        if "kafka" in config.sections():
            kafka_config = config["kafka"]
            if "hosts" in kafka_config:
                opts.kafka_hosts = _str_to_list(kafka_config["hosts"])
            else:
                logger.critical("hosts setting missing from the kafka config section")
                exit(-1)
            if "user" in kafka_config:
                opts.kafka_username = kafka_config["user"]
            if "password" in kafka_config:
                opts.kafka_password = kafka_config["password"]
            if "ssl" in kafka_config:
                opts.kafka_ssl = bool(kafka_config.getboolean("ssl"))
            if "skip_certificate_verification" in kafka_config:
                kafka_verify = bool(
                    kafka_config.getboolean("skip_certificate_verification")
                )
                opts.kafka_skip_certificate_verification = kafka_verify
            if "aggregate_topic" in kafka_config:
                opts.kafka_aggregate_topic = kafka_config["aggregate_topic"]
            else:
                logger.critical(
                    "aggregate_topic setting missing from the kafka config section"
                )
                exit(-1)
            if "failure_topic" in kafka_config:
                opts.kafka_failure_topic = kafka_config["failure_topic"]
            elif "forensic_topic" in kafka_config:
                opts.kafka_failure_topic = kafka_config["forensic_topic"]
            else:
                logger.critical(
                    "failure_topic setting missing from the kafka config section"
                )
            if "smtp_tls_topic" in kafka_config:
                opts.kafka_smtp_tls_topic = kafka_config["smtp_tls_topic"]
            else:
                logger.critical(
                    "smtp_tls_topic setting missing from the kafka config section"
                )

        if "smtp" in config.sections():
            smtp_config = config["smtp"]
            if "host" in smtp_config:
                opts.smtp_host = smtp_config["host"]
            else:
                logger.critical("host setting missing from the smtp config section")
                exit(-1)
            if "port" in smtp_config:
                opts.smtp_port = smtp_config.getint("port")
            if "ssl" in smtp_config:
                opts.smtp_ssl = bool(smtp_config.getboolean("ssl"))
            if "skip_certificate_verification" in smtp_config:
                smtp_verify = bool(
                    smtp_config.getboolean("skip_certificate_verification")
                )
                opts.smtp_skip_certificate_verification = smtp_verify
            if "user" in smtp_config:
                opts.smtp_user = smtp_config["user"]
            else:
                logger.critical("user setting missing from the smtp config section")
                exit(-1)
            if "password" in smtp_config:
                opts.smtp_password = smtp_config["password"]
            else:
                logger.critical("password setting missing from the smtp config section")
                exit(-1)
            if "from" in smtp_config:
                opts.smtp_from = smtp_config["from"]
            else:
                logger.critical("from setting missing from the smtp config section")
            if "to" in smtp_config:
                opts.smtp_to = _str_to_list(smtp_config["to"])
            else:
                logger.critical("to setting missing from the smtp config section")
            if "subject" in smtp_config:
                opts.smtp_subject = smtp_config["subject"]
            if "attachment" in smtp_config:
                opts.smtp_attachment = smtp_config["attachment"]
            if "message" in smtp_config:
                opts.smtp_message = smtp_config["message"]

        if "s3" in config.sections():
            s3_config = config["s3"]
            if "bucket" in s3_config:
                opts.s3_bucket = s3_config["bucket"]
            else:
                logger.critical("bucket setting missing from the s3 config section")
                exit(-1)
            if "path" in s3_config:
                opts.s3_path = s3_config["path"]
                if opts.s3_path.startswith("/"):
                    opts.s3_path = opts.s3_path[1:]
                if opts.s3_path.endswith("/"):
                    opts.s3_path = opts.s3_path[:-1]
            else:
                opts.s3_path = ""

            if "region_name" in s3_config:
                opts.s3_region_name = s3_config["region_name"]
            if "endpoint_url" in s3_config:
                opts.s3_endpoint_url = s3_config["endpoint_url"]
            if "access_key_id" in s3_config:
                opts.s3_access_key_id = s3_config["access_key_id"]
            if "secret_access_key" in s3_config:
                opts.s3_secret_access_key = s3_config["secret_access_key"]

        if "syslog" in config.sections():
            syslog_config = config["syslog"]
            if "server" in syslog_config:
                opts.syslog_server = syslog_config["server"]
            else:
                logger.critical("server setting missing from the syslog config section")
                exit(-1)
            if "port" in syslog_config:
                opts.syslog_port = syslog_config["port"]
            else:
                opts.syslog_port = 514
            if "protocol" in syslog_config:
                opts.syslog_protocol = syslog_config["protocol"]
            else:
                opts.syslog_protocol = "udp"
            if "cafile_path" in syslog_config:
                opts.syslog_cafile_path = syslog_config["cafile_path"]
            if "certfile_path" in syslog_config:
                opts.syslog_certfile_path = syslog_config["certfile_path"]
            if "keyfile_path" in syslog_config:
                opts.syslog_keyfile_path = syslog_config["keyfile_path"]
            if "timeout" in syslog_config:
                opts.syslog_timeout = float(syslog_config["timeout"])
            else:
                opts.syslog_timeout = 5.0
            if "retry_attempts" in syslog_config:
                opts.syslog_retry_attempts = int(syslog_config["retry_attempts"])
            else:
                opts.syslog_retry_attempts = 3
            if "retry_delay" in syslog_config:
                opts.syslog_retry_delay = int(syslog_config["retry_delay"])
            else:
                opts.syslog_retry_delay = 5

        if "gmail_api" in config.sections():
            gmail_api_config = config["gmail_api"]
            opts.gmail_api_credentials_file = gmail_api_config.get("credentials_file")
            opts.gmail_api_token_file = gmail_api_config.get("token_file", ".token")
            opts.gmail_api_include_spam_trash = bool(
                gmail_api_config.getboolean("include_spam_trash", False)
            )
            opts.gmail_api_paginate_messages = bool(
                gmail_api_config.getboolean("paginate_messages", True)
            )
            opts.gmail_api_scopes = gmail_api_config.get(
                "scopes", default_gmail_api_scope
            )
            opts.gmail_api_scopes = _str_to_list(opts.gmail_api_scopes)
            if "oauth2_port" in gmail_api_config:
                opts.gmail_api_oauth2_port = gmail_api_config.getint(
                    "oauth2_port", 8080
                )
            if "auth_mode" in gmail_api_config:
                opts.gmail_api_auth_mode = gmail_api_config.get("auth_mode").strip()
            if "service_account_user" in gmail_api_config:
                opts.gmail_api_service_account_user = gmail_api_config.get(
                    "service_account_user"
                ).strip()
            elif "delegated_user" in gmail_api_config:
                opts.gmail_api_service_account_user = gmail_api_config.get(
                    "delegated_user"
                ).strip()

        if "maildir" in config.sections():
            maildir_api_config = config["maildir"]
            opts.maildir_path = maildir_api_config.get("maildir_path")
            opts.maildir_create = bool(
                maildir_api_config.getboolean("maildir_create", fallback=False)
            )

        if "log_analytics" in config.sections():
            log_analytics_config = config["log_analytics"]
            opts.la_client_id = log_analytics_config.get("client_id")
            opts.la_client_secret = log_analytics_config.get("client_secret")
            opts.la_tenant_id = log_analytics_config.get("tenant_id")
            opts.la_dce = log_analytics_config.get("dce")
            opts.la_dcr_immutable_id = log_analytics_config.get("dcr_immutable_id")
            opts.la_dcr_aggregate_stream = log_analytics_config.get(
                "dcr_aggregate_stream"
            )
            opts.la_dcr_failure_stream = log_analytics_config.get("dcr_failure_stream")
            if opts.la_dcr_failure_stream is None:
                opts.la_dcr_failure_stream = log_analytics_config.get(
                    "dcr_forensic_stream"
                )
            opts.la_dcr_smtp_tls_stream = log_analytics_config.get(
                "dcr_smtp_tls_stream"
            )

        if "gelf" in config.sections():
            gelf_config = config["gelf"]
            if "host" in gelf_config:
                opts.gelf_host = gelf_config["host"]
            else:
                logger.critical("host setting missing from the gelf config section")
                exit(-1)
            if "port" in gelf_config:
                opts.gelf_port = gelf_config["port"]
            else:
                logger.critical("port setting missing from the gelf config section")
                exit(-1)
            if "mode" in gelf_config:
                opts.gelf_mode = gelf_config["mode"]
            else:
                logger.critical("mode setting missing from the gelf config section")
                exit(-1)

        if "webhook" in config.sections():
            webhook_config = config["webhook"]
            if "aggregate_url" in webhook_config:
                opts.webhook_aggregate_url = webhook_config["aggregate_url"]
            if "failure_url" in webhook_config:
                opts.webhook_failure_url = webhook_config["failure_url"]
            elif "forensic_url" in webhook_config:
                opts.webhook_failure_url = webhook_config["forensic_url"]
            if "smtp_tls_url" in webhook_config:
                opts.webhook_smtp_tls_url = webhook_config["smtp_tls_url"]
            if "timeout" in webhook_config:
                opts.webhook_timeout = webhook_config.getint("timeout")

    logger.setLevel(logging.ERROR)

    if opts.warnings:
        logger.setLevel(logging.WARNING)
    if opts.verbose:
        logger.setLevel(logging.INFO)
    if opts.debug:
        logger.setLevel(logging.DEBUG)
    if opts.log_file:
        try:
            fh = logging.FileHandler(opts.log_file, "a")
            formatter = logging.Formatter(
                "%(asctime)s - %(levelname)s - [%(filename)s:%(lineno)d] - %(message)s"
            )
            fh.setFormatter(formatter)
            logger.addHandler(fh)
        except Exception as error:
            logger.warning("Unable to write to log file: {}".format(error))

    if (
        opts.imap_host is None
        and opts.graph_client_id is None
        and opts.gmail_api_credentials_file is None
        and opts.maildir_path is None
        and len(opts.file_path) == 0
    ):
        logger.error("You must supply input files or a mailbox connection")
        exit(1)

    logger.info("Starting parsedmarc")

    if opts.save_aggregate or opts.save_failure or opts.save_smtp_tls:
        try:
            if opts.elasticsearch_hosts:
                es_aggregate_index = "dmarc_aggregate"
                es_failure_index = "dmarc_failure"
                es_smtp_tls_index = "smtp_tls"
                if opts.elasticsearch_index_suffix:
                    suffix = opts.elasticsearch_index_suffix
                    es_aggregate_index = "{0}_{1}".format(es_aggregate_index, suffix)
                    es_failure_index = "{0}_{1}".format(es_failure_index, suffix)
                    es_smtp_tls_index = "{0}_{1}".format(es_smtp_tls_index, suffix)
                if opts.elasticsearch_index_prefix:
                    prefix = opts.elasticsearch_index_prefix
                    es_aggregate_index = "{0}{1}".format(prefix, es_aggregate_index)
                    es_failure_index = "{0}{1}".format(prefix, es_failure_index)
                    es_smtp_tls_index = "{0}{1}".format(prefix, es_smtp_tls_index)
                elastic_timeout_value = (
                    float(opts.elasticsearch_timeout)
                    if opts.elasticsearch_timeout is not None
                    else 60.0
                )
                elastic.set_hosts(
                    opts.elasticsearch_hosts,
                    use_ssl=opts.elasticsearch_ssl,
                    ssl_cert_path=opts.elasticsearch_ssl_cert_path,
                    username=opts.elasticsearch_username,
                    password=opts.elasticsearch_password,
                    api_key=opts.elasticsearch_api_key,
                    timeout=elastic_timeout_value,
                )
                elastic.migrate_indexes(
                    aggregate_indexes=[es_aggregate_index],
                    failure_indexes=[es_failure_index],
                )
        except elastic.ElasticsearchError:
            logger.exception("Elasticsearch Error")
            exit(1)

        try:
            if opts.opensearch_hosts:
                os_aggregate_index = "dmarc_aggregate"
                os_failure_index = "dmarc_failure"
                os_smtp_tls_index = "smtp_tls"
                if opts.opensearch_index_suffix:
                    suffix = opts.opensearch_index_suffix
                    os_aggregate_index = "{0}_{1}".format(os_aggregate_index, suffix)
                    os_failure_index = "{0}_{1}".format(os_failure_index, suffix)
                    os_smtp_tls_index = "{0}_{1}".format(os_smtp_tls_index, suffix)
                if opts.opensearch_index_prefix:
                    prefix = opts.opensearch_index_prefix
                    os_aggregate_index = "{0}{1}".format(prefix, os_aggregate_index)
                    os_failure_index = "{0}{1}".format(prefix, os_failure_index)
                    os_smtp_tls_index = "{0}{1}".format(prefix, os_smtp_tls_index)
                opensearch_timeout_value = (
                    float(opts.opensearch_timeout)
                    if opts.opensearch_timeout is not None
                    else 60.0
                )
                opensearch.set_hosts(
                    opts.opensearch_hosts,
                    use_ssl=opts.opensearch_ssl,
                    ssl_cert_path=opts.opensearch_ssl_cert_path,
                    username=opts.opensearch_username,
                    password=opts.opensearch_password,
                    api_key=opts.opensearch_api_key,
                    timeout=opensearch_timeout_value,
                    auth_type=opts.opensearch_auth_type,
                    aws_region=opts.opensearch_aws_region,
                    aws_service=opts.opensearch_aws_service,
                )
                opensearch.migrate_indexes(
                    aggregate_indexes=[os_aggregate_index],
                    failure_indexes=[os_failure_index],
                )
        except opensearch.OpenSearchError:
            logger.exception("OpenSearch Error")
            exit(1)

    if opts.s3_bucket:
        try:
            s3_client = s3.S3Client(
                bucket_name=opts.s3_bucket,
                bucket_path=opts.s3_path,
                region_name=opts.s3_region_name,
                endpoint_url=opts.s3_endpoint_url,
                access_key_id=opts.s3_access_key_id,
                secret_access_key=opts.s3_secret_access_key,
            )
        except Exception as error_:
            logger.error("S3 Error: {0}".format(error_.__str__()))

    if opts.syslog_server:
        try:
            syslog_client = syslog.SyslogClient(
                server_name=opts.syslog_server,
                server_port=int(opts.syslog_port),
                protocol=opts.syslog_protocol or "udp",
                cafile_path=opts.syslog_cafile_path,
                certfile_path=opts.syslog_certfile_path,
                keyfile_path=opts.syslog_keyfile_path,
                timeout=opts.syslog_timeout if opts.syslog_timeout is not None else 5.0,
                retry_attempts=opts.syslog_retry_attempts
                if opts.syslog_retry_attempts is not None
                else 3,
                retry_delay=opts.syslog_retry_delay
                if opts.syslog_retry_delay is not None
                else 5,
            )
        except Exception as error_:
            logger.error("Syslog Error: {0}".format(error_.__str__()))

    if opts.hec:
        if opts.hec_token is None or opts.hec_index is None:
            logger.error("HEC token and HEC index are required when using HEC URL")
            exit(1)

        verify = True
        if opts.hec_skip_certificate_verification:
            verify = False
        hec_client = splunk.HECClient(
            opts.hec, opts.hec_token, opts.hec_index, verify=verify
        )

    if opts.kafka_hosts:
        try:
            ssl_context = None
            if opts.kafka_skip_certificate_verification:
                logger.debug("Skipping Kafka certificate verification")
                ssl_context = create_default_context()
                ssl_context.check_hostname = False
                ssl_context.verify_mode = CERT_NONE
            kafka_client = kafkaclient.KafkaClient(
                opts.kafka_hosts,
                username=opts.kafka_username,
                password=opts.kafka_password,
                ssl_context=ssl_context,
            )
        except Exception as error_:
            logger.error("Kafka Error: {0}".format(error_.__str__()))

    if opts.gelf_host:
        try:
            gelf_client = gelf.GelfClient(
                host=opts.gelf_host,
                port=int(opts.gelf_port),
                mode=opts.gelf_mode,
            )
        except Exception as error_:
            logger.error("GELF Error: {0}".format(error_.__str__()))

    if (
        opts.webhook_aggregate_url
        or opts.webhook_failure_url
        or opts.webhook_smtp_tls_url
    ):
        try:
            webhook_client = webhook.WebhookClient(
                aggregate_url=opts.webhook_aggregate_url,
                failure_url=opts.webhook_failure_url,
                smtp_tls_url=opts.webhook_smtp_tls_url,
                timeout=opts.webhook_timeout,
            )
        except Exception as error_:
            logger.error("Webhook Error: {0}".format(error_.__str__()))

    kafka_aggregate_topic = opts.kafka_aggregate_topic
    kafka_failure_topic = opts.kafka_failure_topic
    kafka_smtp_tls_topic = opts.kafka_smtp_tls_topic

    file_paths = []
    mbox_paths = []

    for file_path in args.file_path:
        file_paths += glob(file_path)
    for file_path in file_paths:
        if is_mbox(file_path):
            mbox_paths.append(file_path)

    file_paths = list(set(file_paths))
    mbox_paths = list(set(mbox_paths))

    for mbox_path in mbox_paths:
        file_paths.remove(mbox_path)

    counter = 0

    results = []

    pbar = None
    if sys.stdout.isatty():
        pbar = tqdm(total=len(file_paths))

    n_procs = int(opts.n_procs or 1)
    if n_procs < 1:
        n_procs = 1

    # Capture the current log level to pass to child processes
    current_log_level = logger.level
    current_log_file = opts.log_file

    for batch_index in range((len(file_paths) + n_procs - 1) // n_procs):
        processes = []
        connections = []

        for proc_index in range(n_procs * batch_index, n_procs * (batch_index + 1)):
            if proc_index >= len(file_paths):
                break

            parent_conn, child_conn = Pipe()
            connections.append(parent_conn)

            process = Process(
                target=cli_parse,
                args=(
                    file_paths[proc_index],
                    opts.strip_attachment_payloads,
                    opts.nameservers,
                    opts.dns_timeout,
                    opts.ip_db_path,
                    opts.offline,
                    opts.always_use_local_files,
                    opts.reverse_dns_map_path,
                    opts.reverse_dns_map_url,
                    opts.normalize_timespan_threshold_hours,
                    child_conn,
                    current_log_level,
                    current_log_file,
                ),
            )
            processes.append(process)

        for proc in processes:
            proc.start()

        for conn in connections:
            results.append(conn.recv())

        for proc in processes:
            proc.join()
            if pbar is not None:
                counter += 1
                pbar.update(1)

    if pbar is not None:
        pbar.close()

    for result in results:
        if isinstance(result[0], ParserError) or result[0] is None:
            logger.error("Failed to parse {0} - {1}".format(result[1], result[0]))
        else:
            if result[0]["report_type"] == "aggregate":
                report_org = result[0]["report"]["report_metadata"]["org_name"]
                report_id = result[0]["report"]["report_metadata"]["report_id"]
                report_key = f"{report_org}_{report_id}"
                if report_key not in SEEN_AGGREGATE_REPORT_IDS:
                    SEEN_AGGREGATE_REPORT_IDS[report_key] = True
                    aggregate_reports.append(result[0]["report"])
                else:
                    logger.debug(
                        "Skipping duplicate aggregate report "
                        f"from {report_org} with ID: {report_id}"
                    )
            elif result[0]["report_type"] == "failure":
                failure_reports.append(result[0]["report"])
            elif result[0]["report_type"] == "smtp_tls":
                smtp_tls_reports.append(result[0]["report"])

    for mbox_path in mbox_paths:
        normalize_timespan_threshold_hours_value = (
            float(opts.normalize_timespan_threshold_hours)
            if opts.normalize_timespan_threshold_hours is not None
            else 24.0
        )
        strip = opts.strip_attachment_payloads
        reports = get_dmarc_reports_from_mbox(
            mbox_path,
            nameservers=opts.nameservers,
            dns_timeout=opts.dns_timeout,
            strip_attachment_payloads=strip,
            ip_db_path=opts.ip_db_path,
            always_use_local_files=opts.always_use_local_files,
            reverse_dns_map_path=opts.reverse_dns_map_path,
            reverse_dns_map_url=opts.reverse_dns_map_url,
            offline=opts.offline,
            normalize_timespan_threshold_hours=normalize_timespan_threshold_hours_value,
        )
        aggregate_reports += reports["aggregate_reports"]
        failure_reports += reports["failure_reports"]
        smtp_tls_reports += reports["smtp_tls_reports"]

    mailbox_connection = None
    mailbox_batch_size_value = 10
    mailbox_check_timeout_value = 30
    normalize_timespan_threshold_hours_value = 24.0

    if opts.imap_host:
        try:
            if opts.imap_user is None or opts.imap_password is None:
                logger.error(
                    "IMAP user and password must be specified ifhost is specified"
                )

            ssl = True
            verify = True
            if opts.imap_skip_certificate_verification:
                logger.debug("Skipping IMAP certificate verification")
                verify = False
            if not opts.imap_ssl:
                ssl = False

            imap_timeout = (
                int(opts.imap_timeout) if opts.imap_timeout is not None else 30
            )
            imap_max_retries = (
                int(opts.imap_max_retries) if opts.imap_max_retries is not None else 4
            )
            imap_port_value = int(opts.imap_port) if opts.imap_port is not None else 993
            mailbox_connection = IMAPConnection(
                host=opts.imap_host,
                port=imap_port_value,
                ssl=ssl,
                verify=verify,
                timeout=imap_timeout,
                max_retries=imap_max_retries,
                user=opts.imap_user,
                password=opts.imap_password,
            )

        except Exception:
            logger.exception("IMAP Error")
            exit(1)

    if opts.graph_client_id:
        try:
            mailbox = opts.graph_mailbox or opts.graph_user
            mailbox_connection = MSGraphConnection(
                auth_method=opts.graph_auth_method,
                mailbox=mailbox,
                tenant_id=opts.graph_tenant_id,
                client_id=opts.graph_client_id,
                client_secret=opts.graph_client_secret,
                certificate_path=opts.graph_certificate_path,
                certificate_password=opts.graph_certificate_password,
                username=opts.graph_user,
                password=opts.graph_password,
                token_file=opts.graph_token_file,
                allow_unencrypted_storage=bool(opts.graph_allow_unencrypted_storage),
                graph_url=opts.graph_url,
            )

        except Exception:
            logger.exception("MS Graph Error")
            exit(1)

    if opts.gmail_api_credentials_file:
        if opts.mailbox_delete:
            if "https://mail.google.com/" not in opts.gmail_api_scopes:
                logger.error(
                    "Message deletion requires scope"
                    " 'https://mail.google.com/'. "
                    "Add the scope and remove token file "
                    "to acquire proper access."
                )
                opts.mailbox_delete = False

        try:
            mailbox_connection = GmailConnection(
                credentials_file=opts.gmail_api_credentials_file,
                token_file=opts.gmail_api_token_file,
                scopes=opts.gmail_api_scopes,
                include_spam_trash=opts.gmail_api_include_spam_trash,
                paginate_messages=opts.gmail_api_paginate_messages,
                reports_folder=opts.mailbox_reports_folder,
                oauth2_port=opts.gmail_api_oauth2_port,
                auth_mode=opts.gmail_api_auth_mode,
                service_account_user=opts.gmail_api_service_account_user,
            )

        except Exception:
            logger.exception("Gmail API Error")
            exit(1)

    if opts.maildir_path:
        try:
            mailbox_connection = MaildirConnection(
                maildir_path=opts.maildir_path,
                maildir_create=opts.maildir_create,
            )
        except Exception:
            logger.exception("Maildir Error")
            exit(1)

    if mailbox_connection:
        mailbox_batch_size_value = (
            int(opts.mailbox_batch_size) if opts.mailbox_batch_size is not None else 10
        )
        mailbox_check_timeout_value = (
            int(opts.mailbox_check_timeout)
            if opts.mailbox_check_timeout is not None
            else 30
        )
        normalize_timespan_threshold_hours_value = (
            float(opts.normalize_timespan_threshold_hours)
            if opts.normalize_timespan_threshold_hours is not None
            else 24.0
        )
        try:
            reports = get_dmarc_reports_from_mailbox(
                connection=mailbox_connection,
                delete=opts.mailbox_delete,
                batch_size=mailbox_batch_size_value,
                reports_folder=opts.mailbox_reports_folder,
                archive_folder=opts.mailbox_archive_folder,
                ip_db_path=opts.ip_db_path,
                always_use_local_files=opts.always_use_local_files,
                reverse_dns_map_path=opts.reverse_dns_map_path,
                reverse_dns_map_url=opts.reverse_dns_map_url,
                offline=opts.offline,
                nameservers=opts.nameservers,
                test=opts.mailbox_test,
                strip_attachment_payloads=opts.strip_attachment_payloads,
                since=opts.mailbox_since,
                normalize_timespan_threshold_hours=normalize_timespan_threshold_hours_value,
            )

            aggregate_reports += reports["aggregate_reports"]
            failure_reports += reports["failure_reports"]
            smtp_tls_reports += reports["smtp_tls_reports"]

        except Exception:
            logger.exception("Mailbox Error")
            exit(1)

    parsing_results: ParsingResults = {
        "aggregate_reports": aggregate_reports,
        "failure_reports": failure_reports,
        "smtp_tls_reports": smtp_tls_reports,
    }

    try:
        process_reports(parsing_results)
    except ParserError as error:
        logger.error(error.__str__())
        exit(1)

    if opts.smtp_host:
        try:
            verify = True
            if opts.smtp_skip_certificate_verification:
                verify = False
            smtp_port_value = int(opts.smtp_port) if opts.smtp_port is not None else 25
            smtp_to_value = (
                list(opts.smtp_to)
                if isinstance(opts.smtp_to, list)
                else _str_to_list(str(opts.smtp_to))
            )
            email_results(
                parsing_results,
                opts.smtp_host,
                opts.smtp_from,
                smtp_to_value,
                port=smtp_port_value,
                verify=verify,
                username=opts.smtp_user,
                password=opts.smtp_password,
                subject=opts.smtp_subject,
                require_encryption=opts.smtp_ssl,
            )
        except Exception:
            logger.exception("Failed to email results")
            exit(1)

    if mailbox_connection and opts.mailbox_watch:
        logger.info("Watching for email - Quit with ctrl-c")

        try:
            watch_inbox(
                mailbox_connection=mailbox_connection,
                callback=process_reports,
                reports_folder=opts.mailbox_reports_folder,
                archive_folder=opts.mailbox_archive_folder,
                delete=opts.mailbox_delete,
                test=opts.mailbox_test,
                check_timeout=mailbox_check_timeout_value,
                nameservers=opts.nameservers,
                dns_timeout=opts.dns_timeout,
                strip_attachment_payloads=opts.strip_attachment_payloads,
                batch_size=mailbox_batch_size_value,
                since=opts.mailbox_since,
                ip_db_path=opts.ip_db_path,
                always_use_local_files=opts.always_use_local_files,
                reverse_dns_map_path=opts.reverse_dns_map_path,
                reverse_dns_map_url=opts.reverse_dns_map_url,
                offline=opts.offline,
                normalize_timespan_threshold_hours=normalize_timespan_threshold_hours_value,
            )
        except FileExistsError as error:
            logger.error("{0}".format(error.__str__()))
            exit(1)
        except ParserError as error:
            logger.error(error.__str__())
            exit(1)


if __name__ == "__main__":
    _main()