晋太元中，武陵人捕鱼为业。缘溪行，忘路之远近。忽逢桃花林，夹岸数百步，中无杂树，芳草鲜美，落英缤纷。渔人甚异之，复前行，欲穷其林。 　　林尽水源，便得一山，山有小口，仿佛若有光。便舍船，从口入。初极狭，才通人。复行数十步，豁然开朗。土地平旷，屋舍俨然，有良田、美池、桑竹之属。阡陌交通，鸡犬相闻。其中往来种作，男女衣着，悉如外人。黄发垂髫，并怡然自乐。 　　见渔人，乃大惊，问所从来。具答之。便要还家，设酒杀鸡作食。村中闻有此人，咸来问讯。自云先世避秦时乱，率妻子邑人来此绝境，不复出焉，遂与外人间隔。问今是何世，乃不知有汉，无论魏晋。此人一一为具言所闻，皆叹惋。余人各复延至其家，皆出酒食。停数日，辞去。此中人语云：“不足为外人道也。”(间隔 一作：隔绝) 　　既出，得其船，便扶向路，处处志之。及郡下，诣太守，说如此。太守即遣人随其往，寻向所志，遂迷，不复得路。 　　南阳刘子骥，高尚士也，闻之，欣然规往。未果，寻病终。后遂无问津者。 .
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# Copyright 2023 Red Hat, Inc. Jake Hunsaker <jhunsake@redhat.com>

# This file is part of the sos project: https://github.com/sosreport/sos
#
# This copyrighted material is made available to anyone wishing to use,
# modify, copy, or redistribute it subject to the terms and conditions of
# version 2 of the GNU General Public License.
#
# See the LICENSE file in the source distribution for further information.

from sos.cleaner.preppers import SoSPrepper


class HostnamePrepper(SoSPrepper):
    """
    Prepper for providing domain and hostname information to the hostname
    mapping.

    The items from hostname sources are handled manually via the _get_items
    method, rather than passing the file directly, as the parser does not know
    what hostnames or domains to match on initially.

    This will also populate the regex_items list with local short names.
    """

    name = 'hostname'

    def _get_items_for_hostname(self, archive):
        items = []
        _file = 'hostname'
        if archive.is_sos:
            _file = 'sos_commands/host/hostname'
        elif archive.is_insights:
            _file = 'data/insights_commands/hostname_-f'

        content = archive.get_file_content(_file)
        if content and content != 'localhost':
            domains = content.split('.')
            if len(domains) > 1:
                items.append(domains[0])
                self.regex_items['hostname'].add((domains[0]))
            if len(domains) > 3:
                # make sure we get example.com if the system's hostname
                # is something like foo.bar.example.com
                top_domain = '.'.join(domains[-2:])
                items.append(top_domain.strip())
            items.append(content.strip())

        _hosts = archive.get_file_content('etc/hosts')
        for line in _hosts.splitlines():
            if line.startswith('#') or 'localhost' in line:
                continue
            hostln = line.split()[1:]
            for host in hostln:
                if len(host.split('.')) == 1:
                    self.regex_items['hostname'].add(host)
                else:
                    items.append(host)

        for domain in self.opts.domains:
            items.append(domain)

        return items

haha - 2025