class AuthorizedKeys(list):
    """
    Parser for OpenSSH authorized_keys file contents
    """
    def __init__(self, path=DEFAULT_AUTHORIZED_KEYS):
        self.log = Logger().default_stream
        self.path = path
        self.load()

    def load(self):
        """
        Load authorized keys file, discarding earlier data in the object.

        SSH v1 authorized_keys line: options, bits, exponent, modulus, comment)
        SSH v2 authorized_keys line: options, keytype, base64-encoded key, comment)'

        See man sshd for details.
        """
        self.__delslice__(0, len(self))

        if not os.path.isfile(self.path):
            self.log.debug('No such file: {0}'.format(self.path))
            return

        for line in [l.rstrip() for l in open(self.path, 'r').readlines()]:
            if line.startswith('#') or line.strip() == '':
                continue

            try:
                self.append(OpenSSHPublicKey(line))
            except SSHKeyError:
                pass

class KnownHosts(list):
    """
    Parser for OpenSSH known_hosts file contents
    """
    def __init__(self, path=DEFAULT_KNOWN_HOSTS, fingerprint_hash=None):
        self.log = Logger().default_stream
        self.path = path
        self.fingerprint_hash = fingerprint_hash
        self.load()

    def load(self):
        """
        Load known hosts file, discarding earlier data in the object.
        """
        del self[0:len(self)]

        if not os.path.isfile(self.path):
            self.log.debug('No such file: {}'.format(self.path))
            return

        for line in [l.rstrip() for l in open(self.path, 'r').readlines()]:
            if line.startswith('#') or line.strip() == '':
                continue

            # Strip list of hosts from line
            hosts, key = line.split(None, 1)
            hosts = hosts.split(',')

            try:
                key = KnownHostsEntry(key)
                if key not in self:
                    self.append(key)
                else:
                    key = self[self.index(key)]
                key.add_hosts(hosts)
            except SSHKeyError:
                pass

    def save(self, path=None):
        """Save known hosts

        Saves known hosts file, merging same keys to single line
        """
        if path is None:
            path = self.path
        try:
            with open(path, 'w') as fd:
                for entry in self:
                    fd.write('{}\n'.format(entry))
        except Exception as e:
            raise SSHKeyError('Error writing {}: {}'.format(path, e))

    def find_host_key(self, value):
        """Find key for hostname

        """
        for key in self:
            if value in key.hosts:
                return key
        return None

    def __init__(self, name=None, description=None, epilog=None, debug_flag=True):
        self.name = os.path.basename(sys.argv[0])
        setproctitle('%s %s' % (self.name, ' '.join(sys.argv[1:])))
        signal.signal(signal.SIGINT, self.SIGINT)

        reload(sys)
        sys.setdefaultencoding('utf-8')

        if name is None:
            name = self.name

        # Set to True to avoid any messages from self.message to be printed
        self.silent = False

        self.logger = Logger(self.name)
        self.log = self.logger.default_stream

        self.subcommand_parser = None
        self.parser = argparse.ArgumentParser(
            prog=name,
            description=description,
            formatter_class=argparse.RawTextHelpFormatter,
            epilog=epilog,
            add_help=True,
            conflict_handler='resolve',
        )
        if debug_flag:
            self.parser.add_argument('--debug', action='store_true', help='Show debug messages')

        self.parser.add_argument('--insecure', action='store_false', help='No HTTPS certificate validation')
        self.parser.add_argument('-B', '--browser',
            choices=('chrome','chromium','firefox'),
            help='Browser for cookie stealing'
        )

    def __init__(self, oid):
        self.log = Logger('snmp').default_stream
        self.oid = self.__format_oid__(oid)
        self.oid_string = self.__format_oid_string__(oid)

        self._parent = None
        self._next = None

    def __init__(self, config, name, **kwargs):
        self.log = Logger().default_stream
        self.name = name
        self.description = name
        self.connect_command = DEFAULT_CONNECT_COMMAND
        self.command_separator = DEFAULT_COMMAND_SEPARATOR
        self.update_commands = []
        self.servers = []

        for k in ( 'description', 'command_separator', ):
            if k in kwargs:
                setattr(self, k, kwargs[k])

        if 'connect' in kwargs:
            self.connect_command = kwargs['connect']

        if 'commands' in kwargs:
            self.update_commands = kwargs['commands']

        if 'servers' in kwargs:
            names = kwargs['servers']
            if not isinstance(names, list):
                names = [names]

            for name in names:
                self.servers.append(Server(self, name))

        self.modified = False

    def __init__(self, path):
        self.operating_systems = []
        self.servers = []
        self.path = path
        self.log = Logger().default_stream

        if os.path.isfile(self.path):
            self.load()

    def __init__(self,src,dst,flags=DEFAULT_RSYNC_FLAGS,output_format=DEFAULT_OUTPUT_FORMAT):
        self.log = Logger('rsync').default_stream
        self.src = src
        self.dst = dst
        self.flags = flags
        self.output_format = output_format

        cmd = CommandPathCache().which('rsync')
        if cmd is None:
            raise RsyncError('No such command: rsync')
        self.command = [cmd] + flags + [ self.output_format, '{0}'.format(src),'{0}'.format(dst) ]

class SSHConfig(dict):
    def __init__(self, path=None):
        self.defaults = {}
        self.patterns = []
        self.log = Logger().default_stream
        self.path = path is not None and path or os.path.expanduser('~/.ssh/config')
        self.reload()

    def reload(self):
        self.clear()
        if not os.path.isfile(self.path):
            self.log.debug('No such file: {}'.format(self.path))
            return

        with open(self.path, 'r') as fd:
            host = None
            for line in [x.strip() for x in fd.readlines()]:
                if line == '' or line.startswith('#'):
                    continue

                if line[:5] == 'Host ':
                    host = SSHConfigHostPattern(self, line[5:])
                    for pattern in host.patterns:
                        self[pattern] = host
                    self.patterns.append(host)

                else:
                    host.parse(line)

        if '*' in self.keys():
            self.defaults.update(self.pop('*').items())

    def keys(self):
        return [k for k in sorted(super(SSHConfig, self).keys())]

    def items(self):
        return [(k, self[k]) for k in self.keys()]

    def values(self):
        return [self[k] for k in self.keys()]

class SSHConfig(dict):
    def __init__(self, path=None):
        self.defaults = {}
        self.log = Logger().default_stream
        self.path = path is not None and path or os.path.expanduser('~/.ssh/config')
        self.reload()

    def reload(self):
        self.clear()
        if not os.path.isfile(self.path):
            self.log.debug('No such file: %s' % self.path)
            return

        with open(self.path, 'r') as fd:
            host = None
            for l in [x.strip() for x in fd.readlines()]:
                if l=='' or l.startswith('#'):
                    continue

                if l[:5]=='Host ':
                    host = SSHConfigHost(self, l[5:])
                    self[host.name] = host

                else:
                    host.parse(l)

        if '*' in self.keys():
            self.defaults.update(self.pop('*').items())

    def keys(self):
        return [k for k in sorted(dict.keys(self))]

    def items(self):
        return [(k, self[k]) for k in self.keys()]

    def values(self):
        return [self[k] for k in self.keys()]

class UserSSHKeys(dict):
    """
    List of user configured SSH keys to process
    """
    def __init__(self, authorized_keys=DEFAULT_AUTHORIZED_KEYS):
        self.log = Logger().default_stream
        self.__parse_user_keyfiles()
        self.authorized_keys = AuthorizedKeys(authorized_keys)

    def __parse_user_keyfiles(self):
        """
        Parses any normal user keyfiles in ~/.ssh directory automatically.

        These keys are marked by default not to be automatically loaded:
        to enable, add key path to ~/.ssh/sshkeys.conf
        """

        user_sshdir = os.path.expanduser('~/.ssh')
        if not os.path.isdir(user_sshdir):
            return

        paths = filter(lambda x:
            os.path.isfile(x),
            [os.path.join(user_sshdir, x) for x in filter(lambda x:
                x not in SSH_CONFIG_FILES and os.path.splitext(x)[1]!='.pub',
                os.listdir(user_sshdir)
            )]
        )
        for path in paths:
            try:
                sshkey = SSHKeyFile(self, path)
            except SSHKeyError, emsg:
                self.log.debug(emsg)
                continue

            self[sshkey.path] = sshkey

class RsyncCommand(object):
    """
    Wrapper to execute rsync to target nicely from python
    """
    def __init__(self, src, dst,
                 flags=DEFAULT_RSYNC_FLAGS,
                 output_format=DEFAULT_OUTPUT_FORMAT):

        self.log = Logger('rsync').default_stream
        self.src = src
        self.dst = dst
        self.flags = flags
        self.output_format = output_format

        cmd = CommandPathCache().which('rsync')
        if cmd is None:
            raise RsyncError('No such command: rsync')
        self.command = [cmd] + flags + [self.output_format, '{0}'.format(src), '{0}'.format(dst)]

    def __str__(self):
        return ' '.join(self.command)

    def run(self, verbose=False):
        """
        Run the rsync command specific in __init__()
        """
        if not verbose and self.log.level == logging.DEBUG:
            verbose = True
        try:
            p = Popen(self.command, stdin=PIPE, stdout=PIPE, stderr=PIPE)
            self.log.debug('Running: {0}'.format(self))

            rval = None
            while rval is None:
                if verbose:
                    while True:
                        line = p.stdout.readline()
                        if line == '':
                            break
                        sys.stdout.write('{0}\n'.format(line.rstrip()))
                time.sleep(0.2)
                rval = p.poll()

            self.log.debug('Return code: {0}'.format(rval))
            if rval != 0:
                raise RsyncError('Error running command {0}: {1}'.format(self, p.stderr.read()))

        except KeyboardInterrupt:
            self.log.debug('Rsync interrupted')
            raise KeyboardInterrupt

 def __init__(self, authorized_keys=DEFAULT_AUTHORIZED_KEYS):
     self.log = Logger().default_stream
     self.__parse_user_keyfiles()
     self.authorized_keys = AuthorizedKeys(authorized_keys)

class OperatingSystemGroup(object):
    """
    Group of operating systems in configuration file
    """

    def __init__(self, config, name, **kwargs):
        self.log = Logger().default_stream
        self.name = name
        self.description = name
        self.connect_command = DEFAULT_CONNECT_COMMAND
        self.command_separator = DEFAULT_COMMAND_SEPARATOR
        self.update_commands = []
        self.servers = []

        for k in ( 'description', 'command_separator', ):
            if k in kwargs:
                setattr(self, k, kwargs[k])

        if 'connect' in kwargs:
            self.connect_command = kwargs['connect']

        if 'commands' in kwargs:
            self.update_commands = kwargs['commands']

        if 'servers' in kwargs:
            names = kwargs['servers']
            if not isinstance(names, list):
                names = [names]

            for name in names:
                self.servers.append(Server(self, name))

        self.modified = False

    def __repr__(self):
        return '%s: %s (%d servers)' % (self.name,self.description,len(self.servers))

    @property
    def command_separator(self):
        return self._command_separator
    @command_separator.setter
    def command_separator(self, value):
        self._command_separator = value
        self.modified = True

    @property
    def connect_command(self):
        return self._connect_command
    @connect_command.setter
    def connect_command(self, value):
        if isinstance(value, basestring):
            value = value.split()
        self._connect_command = value
        self.modified = True

    @property
    def update_command(self):
        return self._update_commands
    @update_command.setter
    def update_commands(self, value):
        if isinstance(value, basestring):
            value = [value]
        self._update_commands = value
        self.modified = True

    @property
    def descripion(self):
        return self._descripion
    @descripion.setter
    def descripion(self, value):
        self._descripion = value
        self.modified = True

    def add_server(self, name):
        if name in [s.name for s in self.servers]:
            self.log.debug('Error adding: server already in group: %s' % name)
            return

        self.servers.append(Server(self, name))
        self.modified = True

    def remove_server(self,name):
        try:
            server = [s for s in self.servers if s.name==name][0]
            self.servers.remove(server)
            self.modified = True
        except IndexError:
            self.log.debug('Error removing: server not in group: %s' % name)
            return

class Script(object):
    """
    Class for common CLI tool script
    """
    def __init__(self, name=None, description=None, epilog=None, debug_flag=True):
        self.name = os.path.basename(sys.argv[0])
        signal.signal(signal.SIGINT, self.SIGINT)

        if has_setproctitle:
            setproctitle('{0} {1}'.format(self.name, ' '.join(sys.argv[1:])))

        if sys.version_info.major < 3:
            reload(sys)  # noqa
            sys.setdefaultencoding('utf-8')

        if name is None:
            name = self.name

        # Set to True to avoid any messages from self.message to be output
        self.silent = False

        self.logger = Logger(self.name)
        self.log = self.logger.default_stream

        self.parser = argparse.ArgumentParser(
            prog=name,
            description=description,
            formatter_class=argparse.RawTextHelpFormatter,
            epilog=epilog,
            add_help=True,
            conflict_handler='resolve',
        )

        if debug_flag:
            self.parser.add_argument('--debug', action='store_true', help='Show debug messages')

        self.subcommand_parser = None

    def SIGINT(self, signum, frame):
        """
        Parse SIGINT signal by quitting the program cleanly with exit code 1
        """
        for t in [t for t in threading.enumerate() if t.name != 'MainThread']:
            if hasattr(t, 'stop') and callable(t.stop):
                t.stop()

        for t in [t for t in threading.enumerate() if t.name != 'MainThread']:
            t.join()

        self.exit(1)

    def wait(self, poll_interval=1):
        """
        Wait for running threads to finish.
        Poll interval is time to wait between checks for threads
        """
        while True:
            active = [t for t in threading.enumerate() if t.name != 'MainThread']
            if not len(active):
                break
            self.log.debug('Waiting for {0:d} threads'.format(len(active)))
            time.sleep(poll_interval)

    def exit(self, value=0, message=None):
        """
        Exit the script with given exit value.
        If message is not None, it is output to stdout
        """
        if isinstance(value, bool):
            if value:
                value = 0
            else:
                value = 1
        else:
            try:
                value = int(value)
                if value < 0 or value > 255:
                    raise ValueError
            except ValueError:
                value = 1

        if message is not None:
            self.message(message)

        for t in [t for t in threading.enumerate() if t.name != 'MainThread']:
            if hasattr(t, 'stop') and callable(t.stop):
                t.stop()

        while True:
            active = [t for t in threading.enumerate() if t.name != 'MainThread']
            if not len(active):
                break
            time.sleep(0.1)

        sys.exit(value)

    def message(self, message):
        if self.silent:
            return
        sys.stdout.write('{0}\n'.format(message))
#.........这里部分代码省略.........

class SNMPAgent(Script):
    """SNMP Agent implementation

    SNMP agent daemon for net-snmpd pass_persist mode

    Example usage:

        agent = SNMPAgent('.1.2.3.4')
        tree = agent.register_tree('1.2.3.4.1')
        tree.register('1.2.3.4.1.1', 'integer', 1)
        tree.register('1.2.3.4.1.2', 'integer', 2)

        agent.register_tree('1.2.3.4.2')
        agent.register('1.2.3.4.2.1', 'integer', 1)
        agent.register('1.2.3.4.2.4', 'integer', 4)
        agent.register('1.2.3.4.2.3', 'integer', 3)
        agent.register('1.2.3.4.2.2', 'integer', 2)

        tree = agent.register_tree('1.2.3.4.3')
        tree.register('1.2.3.4.3.1.1', 'integer', 1)
        tree.add_values('string', [x for x in string.digits[2:]])

        tree = agent.register_tree('1.2.3.4.4')
        tree.add_prefix_map([
            { 'oid': '1.2.3.4.4.1', 'key': 'string', 'values': [x for x in string.letters[:10]]},
            { 'oid': '1.2.3.4.4.2', 'key': 'integer', 'values': [x for x in string.digits[:10]]},
        ])

        agent.run()
    """
    def __init__(self, oid, reload_interval=60):
        super(SNMPAgent, self).__init__()
        self.log = Logger('snmp').default_stream

        self.reload_interval = reload_interval
        self.last_reload = None
        self.args = None

        self.add_argument('-g', '--get', help='SNMP GET request')
        self.add_argument('-n', '--next', help='SNMP GET request')
        self.add_argument('-t', '--tree', action='store_true', help='Show OID tree')

        self.tree = Tree(oid)

    def __SIGHUP__(self, signum, frame):
        """
        Signal handler to reload configuration. Note this requires also the
        IOError processing in main input loop below
        """
        self.log.debug('Reloading from signal')
        self.reload()

    def parse_args(self):
        if self.args is None:
            self.args = super(SNMPAgent, self).parse_args()
        return self.args

    def register_tree(self, oid):
        return self.tree.add(Tree(oid))

    def register(self, oid, key, value):
        return self.tree.add(Item(oid, key, value))

    def GET(self, oid):
        """GET from agent

        Return given OID from agent tree or None

        """
        try:
            return self.tree.GET(oid)
        except SNMPError as e:
            self.log.debug(e)
            return None

    def NEXT(self, oid):
        """NEXT from agent

        Return given NEXT from agent tree or None

        """
        try:
            return self.tree.NEXT(oid)
        except SNMPError as e:
            self.log.debug(e)
            return None

    def SET(self, oid, value):
        """SET registered OID

        Set value for registered OID in agent tree.

        Note: By default items registered are readonly.


        """
        return self.tree.SET(oid, value)

    def clear(self):
        return self.tree.clear()
#.........这里部分代码省略.........

class SNMPAgent(Script):
    """SNMP Agent implementation

    SNMP agent daemon for net-snmpd pass_persist mode

    Example usage:

        agent = SNMPAgent('.1.2.3.4')
        tree = agent.register_tree('1.2.3.4.1')
        tree.register('1.2.3.4.1.1', 'integer', 1)
        tree.register('1.2.3.4.1.2', 'integer', 2)

        agent.register_tree('1.2.3.4.2')
        agent.register('1.2.3.4.2.1', 'integer', 1)
        agent.register('1.2.3.4.2.4', 'integer', 4)
        agent.register('1.2.3.4.2.3', 'integer', 3)
        agent.register('1.2.3.4.2.2', 'integer', 2)

        tree = agent.register_tree('1.2.3.4.3')
        tree.register('1.2.3.4.3.1.1', 'integer', 1)
        tree.add_values('string', [x for x in string.digits[2:]])

        tree = agent.register_tree('1.2.3.4.4')
        tree.add_prefix_map([
            { 'oid': '1.2.3.4.4.1', 'key': 'string', 'values': [x for x in string.letters[:10]]},
            { 'oid': '1.2.3.4.4.2', 'key': 'integer', 'values': [x for x in string.digits[:10]]},
        ])

        agent.run()
    """
    def __init__(self, oid, reload_interval=60):
        Script.__init__(self)
        self.log = Logger('snmp').default_stream

        self.reload_interval = reload_interval
        self.last_reload = None

        self.add_argument('-g', '--get', help='SNMP GET request')
        self.add_argument('-n', '--next', help='SNMP GET request')
        self.add_argument('-t', '--tree', action='store_true', help='Show OID tree')

        self.tree = Tree(oid)

    def __SIGHUP__(self, signum, frame):
        """
        Signal handler to reload configuration. Note this requires also the
        IOError processing in main input loop below
        """
        self.log.debug('Reloading from signal')
        self.reload()

    def register_tree(self, oid):
        return self.tree.add(Tree(oid))

    def register(self, oid, key, value):
        return self.tree.add(Item(oid, key, value))

    def GET(self, oid):
        """GET from agent

        Return given OID from agent tree or None

        """
        try:
            return self.tree.GET(oid)
        except SNMPError, emsg:
            self.log.debug(emsg)
            return None

class AuthorizedKeys(dict):
    """
    Parser for OpenSSH authorized_keys file contents
    """
    def __init__(self, path=DEFAULT_AUTHORIZED_KEYS):
        self.log = Logger().default_stream
        self.path = path
        self.load()

    def load(self):
        """
        Load authorized keys file, discarding earlier data in the object.

        SSH v1 authorized_keys line: options, bits, exponent, modulus, comment)
        SSH v2 authorized_keys line: options, keytype, base64-encoded key, comment)'

        See man sshd for details.
        """
        self.clear()
        if not os.path.isfile(self.path):
            self.log.debug('No such file: {0}'.format(self.path))
            return

        for l in [l.rstrip() for l in open(self.path, 'r').readlines()]:
            if l.startswith('#') or l.strip() == '':
                continue

            entry = {}
            parts = l.split()

            if parts[0][0] in string.digits and len(parts) == 4:
                entry['keyformat'] = 1
                entry['bits'] = int(parts[0])
                entry['exponent'] = parts[1]
                entry['modulus'] = parts[2]
                entry['comment'] = parts[3]
                entry['options'] = None

            elif parts[0] in ( 'ssh-dsa', 'ssh-rsa', ):
                entry['keyformat'] = 2
                entry['keytype'] = parts[0]
                entry['key_base64'] = parts[1]
                entry['comment'] = len(parts) > 2 and parts[2] or ''
                entry['options'] = None

            else:
                entry['options'] = parts[0]
                parts = parts[1:]

                if not parts:
                    continue

                if parts[0] in ( 'ssh-dsa', 'ssh-rsa', ) and len(parts) ==  3:
                    entry['keyformat'] = 2
                    entry['keytype'] = parts[0]
                    entry['key_base64'] = parts[1]
                    entry['comment'] = parts[2]

                elif parts[0] in string.digits:
                    entry['keyformat'] = 1
                    entry['keyformat'] = 1
                    entry['bits'] = int(parts[0])
                    entry['exponent'] = parts[1]
                    entry['modulus'] = parts[2]
                    entry['comment'] = parts[3]

class OIDPrefix(object):
    """Sortable OID base class

    Base class for OID prefixes, sortable in OID order

    """
    def __init__(self, oid):
        self.log = Logger('snmp').default_stream
        self.oid = self.__format_oid__(oid)
        self.oid_string = self.__format_oid_string__(oid)

        self._parent = None
        self._next = None

    def __format_oid_string__(self, oid):
        return '.%s' % '.'.join(str(x) for x in self.__format_oid__(oid))

    def __format_oid__(self, oid):
        """Format OID

        Format OID string to validated OID list

        Return list of integeres
        """

        if isinstance(oid, basestring):
            try:
                oid = oid.strip('.').split('.')
            except ValueError:
                raise ValueError('Invalid OID: %s' % oid)

        return self.__validate_oid__(oid)

    def __validate_oid__(self, oid):
        """Validate OID and return

        Validate list of integers to be a valid OID

        Returns value if OK
        """
        try:
            oid = [int(x) for x in oid]
            for x in oid:
                if x<=0:
                    raise ValueError

        except ValueError:
            raise ValueError('Invalid OID: %s' % oid)

        return oid

    def __invalid__(self, message):
        """Invalid request

        Log error and return None

        """
        self.log.debug('%s' % message)
        return None

    def __cmp__(self, other):
        """Compare oid prefix items

        Compares OID prefixes

        """
        if isinstance(other, basestring):
            oid = self.__format_oid__(other)

        elif isinstance(other, OIDPrefix):
            oid = other.oid

        else:
            raise ValueError('Error comparing OIDPrefix to %d' % type(other))

        if len(oid) != len(self.oid):
            return cmp(len(self.oid), len(oid))

        for i in range(0, len(oid)):
            if oid[i] != self.oid[i]:
                return cmp(self.oid[i], oid[i])

        return cmp(self.oid, oid)

    def __eq__(self, oid):
        return self.__cmp__(oid) == 0

    def __ne__(self, oid):
        return self.__cmp__(oid) != 0

    def __lt__(self, oid):
        return self.__cmp__(oid) < 0

    def __le__(self, oid):
        return self.__cmp__(oid) <= 0

    def __gt__(self, oid):
        return self.__cmp__(oid) > 0

    def __ge__(self, oid):
#.........这里部分代码省略.........

 def __init__(self, path=DEFAULT_KNOWN_HOSTS, fingerprint_hash=None):
     self.log = Logger().default_stream
     self.path = path
     self.fingerprint_hash = fingerprint_hash
     self.load()

class Script(object):
    """
    Class for common CLI tool script
    """
    def __init__(self, name=None, description=None, epilog=None, debug_flag=True):
        self.name = os.path.basename(sys.argv[0])
        setproctitle('%s %s' % (self.name, ' '.join(sys.argv[1:])))
        signal.signal(signal.SIGINT, self.SIGINT)

        reload(sys)
        sys.setdefaultencoding('utf-8')

        if name is None:
            name = self.name

        # Set to True to avoid any messages from self.message to be printed
        self.silent = False

        self.logger = Logger(self.name)
        self.log = self.logger.default_stream

        self.subcommand_parser = None
        self.parser = argparse.ArgumentParser(
            prog=name,
            description=description,
            formatter_class=argparse.RawTextHelpFormatter,
            epilog=epilog,
            add_help=True,
            conflict_handler='resolve',
        )
        if debug_flag:
            self.parser.add_argument('--debug', action='store_true', help='Show debug messages')

        self.parser.add_argument('--insecure', action='store_false', help='No HTTPS certificate validation')
        self.parser.add_argument('-B', '--browser',
            choices=('chrome','chromium','firefox'),
            help='Browser for cookie stealing'
        )

    def SIGINT(self, signum, frame):
        """
        Parse SIGINT signal by quitting the program cleanly with exit code 1
        """
        for t in filter(lambda t: t.name!='MainThread', threading.enumerate()):
            t.stop()
        for t in filter(lambda t: t.name!='MainThread', threading.enumerate()):
            t.join()
        self.exit(1)

    def wait(self, poll_interval=1):
        """
        Wait for running threads to finish.
        Poll interval is time to wait between checks for threads
        """
        while True:
            active = filter(lambda t: t.name!='MainThread', threading.enumerate())
            if not len(active):
                break
            self.log.debug('Waiting for %d threads' % len(active))
            time.sleep(poll_interval)

    def exit(self, value=0, message=None):
        """
        Exit the script with given exit value.
        If message is not None, it is printed on screen.
        """
        if isinstance(value, bool):
            if value:
                value = 0
            else:
                value = 1
        else:
            try:
                value = int(value)
                if value < 0 or value > 255:
                    raise ValueError
            except ValueError:
                value = 1

        if message is not None:
            self.message(message)

        for t in filter(lambda t: t.name!='MainThread', threading.enumerate()):
            t.stop()

        while True:
            active = filter(lambda t: t.name!='MainThread', threading.enumerate())
            if not len(active):
                break
            time.sleep(1)

        sys.exit(value)

    def message(self, message):
        if self.silent:
            return
        sys.stdout.write('%s\n' % message)

    def error(self, message):
        sys.stderr.write('%s\n' % message)
#.........这里部分代码省略.........