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　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。 . Prv8 Shell

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Directory : /usr/share/setroubleshoot/

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Current File : //usr/share/setroubleshoot/SetroubleshootFixit.py

#! /usr/libexec/platform-python -Es

import dbus
import dbus.service
import dbus.mainloop.glib
from gi.repository import GLib
import os
import signal
import subprocess

class RunFix(dbus.service.Object):
    default_polkit_auth_required = "org.fedoraproject.setroubleshootfixit.write"

    def __init__(self, *p, **k):
        super(RunFix, self).__init__(*p, **k)
        self.timeout = 10
        self.alarm(self.timeout)

    def alarm(self, timeout=10):
        signal.alarm(timeout)

    def is_authorized(self, sender):
        bus = dbus.SystemBus()

        proxy = bus.get_object('org.freedesktop.PolicyKit1', '/org/freedesktop/PolicyKit1/Authority')
        authority = dbus.Interface(proxy, dbus_interface='org.freedesktop.PolicyKit1.Authority')
        subject = ('system-bus-name', {'name' : sender})
        action_id = 'org.fedoraproject.setroubleshootfixit.write'
        details = {}
        flags = 1            # AllowUserInteraction flag
        cancellation_id = '' # No cancellation id
        result = authority.CheckAuthorization(subject, action_id, details, flags, cancellation_id)
        return result[0]

    @dbus.service.method("org.fedoraproject.SetroubleshootFixit", sender_keyword="sender", in_signature='ss', out_signature='s')
    def run_fix(self, local_id, analysis_id, sender):
        self.alarm(0)
        command = ["sealert", "-f", local_id, "-P", analysis_id]

        if self.is_authorized(sender):
            result = subprocess.check_output(command, universal_newlines=True)
        else:
            result = "Authorization failed"

        self.alarm(self.timeout)
        return result


if __name__ == "__main__":
    mainloop = GLib.MainLoop()
    dbus.mainloop.glib.DBusGMainLoop(set_as_default=True)
    system_bus = dbus.SystemBus()
    name = dbus.service.BusName("org.fedoraproject.SetroubleshootFixit", system_bus)
    object = RunFix(system_bus, "/org/fedoraproject/SetroubleshootFixit/object")
    mainloop.run()

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