X-Git-Url: https://mudpy.org/gitweb?a=blobdiff_plain;f=lib%2Fmudpy%2Fmisc.py;h=ea18ffb;hb=HEAD;hp=3464744884e28437ed4b13748a3686f73508aa6c;hpb=1cee9130682021f657adc22a067675c9e8592457;p=mudpy.git diff --git a/lib/mudpy/misc.py b/lib/mudpy/misc.py deleted file mode 100644 index 3464744..0000000 --- a/lib/mudpy/misc.py +++ /dev/null @@ -1,2853 +0,0 @@ -# -*- coding: utf-8 -*- -u"""Miscellaneous functions for the mudpy engine.""" - -# Copyright (c) 2004-2010 Jeremy Stanley . Permission -# to use, copy, modify, and distribute this software is granted under -# terms provided in the LICENSE file distributed with this software. - -class Element: - u"""An element of the universe.""" - def __init__(self, key, universe, filename=None): - u"""Set up a new element.""" - import os.path - - # keep track of our key name - self.key = key - - # keep track of what universe it's loading into - self.universe = universe - - # clone attributes if this is replacing another element - if self.key in self.universe.contents: - old_element = self.universe.contents[self.key] - for attribute in vars(old_element).keys(): - exec(u"self." + attribute + u" = old_element." + attribute) - if self.owner: self.owner.avatar = self - - # i guess this is a new element then - else: - - # not owned by a user by default (used for avatars) - self.owner = None - - # no contents in here by default - self.contents = {} - - # parse out appropriate category and subkey names, add to list - if self.key.find(u":") > 0: - self.category, self.subkey = self.key.split(u":", 1) - else: - self.category = u"other" - self.subkey = self.key - if not self.category in self.universe.categories: - self.category = u"other" - self.subkey = self.key - - # get an appropriate filename for the origin - if not filename: - filename = self.universe.default_origins[self.category] - if not os.path.isabs(filename): - filename = os.path.abspath(filename) - - # add the file if it doesn't exist yet - if not filename in self.universe.files: - DataFile(filename, self.universe) - - # record or reset a pointer to the origin file - self.origin = self.universe.files[filename] - - # add a data section to the origin if necessary - if not self.origin.data.has_section(self.key): - self.origin.data.add_section(self.key) - - # add or replace this element in the universe - self.universe.contents[self.key] = self - self.universe.categories[self.category][self.subkey] = self - - def reload(self): - u"""Create a new element and replace this one.""" - new_element = Element(self.key, self.universe, self.origin.filename) - del(self) - def destroy(self): - u"""Remove an element from the universe and destroy it.""" - self.origin.data.remove_section(self.key) - del self.universe.categories[self.category][self.subkey] - del self.universe.contents[self.key] - del self - def facets(self): - u"""Return a list of non-inherited facets for this element.""" - if self.key in self.origin.data.sections(): - return self.origin.data.options(self.key) - else: return [] - def has_facet(self, facet): - u"""Return whether the non-inherited facet exists.""" - return facet in self.facets() - def remove_facet(self, facet): - u"""Remove a facet from the element.""" - if self.has_facet(facet): - self.origin.data.remove_option(self.key, facet) - self.origin.modified = True - def ancestry(self): - u"""Return a list of the element's inheritance lineage.""" - if self.has_facet(u"inherit"): - ancestry = self.getlist(u"inherit") - for parent in ancestry[:]: - ancestors = self.universe.contents[parent].ancestry() - for ancestor in ancestors: - if ancestor not in ancestry: ancestry.append(ancestor) - return ancestry - else: return [] - def get(self, facet, default=None): - u"""Retrieve values.""" - if default is None: default = u"" - if self.origin.data.has_option(self.key, facet): - raw_data = self.origin.data.get(self.key, facet) - if raw_data.startswith(u"u\"") or raw_data.startswith(u"u'"): - raw_data = raw_data[1:] - raw_data.strip(u"\"'") - if type(raw_data) == str: return unicode(raw_data, "utf-8") - else: return raw_data - elif self.has_facet(u"inherit"): - for ancestor in self.ancestry(): - if self.universe.contents[ancestor].has_facet(facet): - return self.universe.contents[ancestor].get(facet) - else: return default - def getboolean(self, facet, default=None): - u"""Retrieve values as boolean type.""" - if default is None: default=False - if self.origin.data.has_option(self.key, facet): - return self.origin.data.getboolean(self.key, facet) - elif self.has_facet(u"inherit"): - for ancestor in self.ancestry(): - if self.universe.contents[ancestor].has_facet(facet): - return self.universe.contents[ancestor].getboolean(facet) - else: return default - def getint(self, facet, default=None): - u"""Return values as int/long type.""" - if default is None: default = 0 - if self.origin.data.has_option(self.key, facet): - return self.origin.data.getint(self.key, facet) - elif self.has_facet(u"inherit"): - for ancestor in self.ancestry(): - if self.universe.contents[ancestor].has_facet(facet): - return self.universe.contents[ancestor].getint(facet) - else: return default - def getfloat(self, facet, default=None): - u"""Return values as float type.""" - if default is None: default = 0.0 - if self.origin.data.has_option(self.key, facet): - return self.origin.data.getfloat(self.key, facet) - elif self.has_facet(u"inherit"): - for ancestor in self.ancestry(): - if self.universe.contents[ancestor].has_facet(facet): - return self.universe.contents[ancestor].getfloat(facet) - else: return default - def getlist(self, facet, default=None): - u"""Return values as list type.""" - if default is None: default = [] - value = self.get(facet) - if value: return makelist(value) - else: return default - def getdict(self, facet, default=None): - u"""Return values as dict type.""" - if default is None: default = {} - value = self.get(facet) - if value: return makedict(value) - else: return default - def set(self, facet, value): - u"""Set values.""" - if not self.has_facet(facet) or not self.get(facet) == value: - if type(value) is long: value = unicode(value) - elif not type(value) is unicode: value = repr(value) - self.origin.data.set(self.key, facet, value) - self.origin.modified = True - def append(self, facet, value): - u"""Append value tp a list.""" - if type(value) is long: value = unicode(value) - elif not type(value) is unicode: value = repr(value) - newlist = self.getlist(facet) - newlist.append(value) - self.set(facet, newlist) - - def new_event(self, action, when=None): - u"""Create, attach and enqueue an event element.""" - - # if when isn't specified, that means now - if not when: when = self.universe.get_time() - - # events are elements themselves - event = Element(u"event:" + self.key + u":" + counter) - - def send( - self, - message, - eol=u"$(eol)", - raw=False, - flush=False, - add_prompt=True, - just_prompt=False - ): - u"""Convenience method to pass messages to an owner.""" - if self.owner: - self.owner.send(message, eol, raw, flush, add_prompt, just_prompt) - - def can_run(self, command): - u"""Check if the user can run this command object.""" - - # has to be in the commands category - if command not in self.universe.categories[u"command"].values(): - result = False - - # avatars of administrators can run any command - elif self.owner and self.owner.account.getboolean(u"administrator"): - result = True - - # everyone can run non-administrative commands - elif not command.getboolean(u"administrative"): - result = True - - # otherwise the command cannot be run by this actor - else: - result = False - - # pass back the result - return result - - def update_location(self): - u"""Make sure the location's contents contain this element.""" - location = self.get(u"location") - if location in self.universe.contents: - self.universe.contents[location].contents[self.key] = self - def clean_contents(self): - u"""Make sure the element's contents aren't bogus.""" - for element in self.contents.values(): - if element.get(u"location") != self.key: - del self.contents[element.key] - def go_to(self, location): - u"""Relocate the element to a specific location.""" - current = self.get(u"location") - if current and self.key in self.universe.contents[current].contents: - del universe.contents[current].contents[self.key] - if location in self.universe.contents: self.set(u"location", location) - self.universe.contents[location].contents[self.key] = self - self.look_at(location) - def go_home(self): - u"""Relocate the element to its default location.""" - self.go_to(self.get(u"default_location")) - self.echo_to_location( - u"You suddenly realize that " + self.get(u"name") + u" is here." - ) - def move_direction(self, direction): - u"""Relocate the element in a specified direction.""" - self.echo_to_location( - self.get( - u"name" - ) + u" exits " + self.universe.categories[ - u"internal" - ][ - u"directions" - ].getdict( - direction - )[ - u"exit" - ] + u"." - ) - self.send( - u"You exit " + self.universe.categories[ - u"internal" - ][ - u"directions" - ].getdict( - direction - )[ - u"exit" - ] + u".", - add_prompt=False - ) - self.go_to( - self.universe.contents[self.get(u"location")].link_neighbor(direction) - ) - self.echo_to_location( - self.get( - u"name" - ) + u" arrives from " + self.universe.categories[ - u"internal" - ][ - u"directions" - ].getdict( - direction - )[ - u"enter" - ] + u"." - ) - def look_at(self, key): - u"""Show an element to another element.""" - if self.owner: - element = self.universe.contents[key] - message = u"" - name = element.get(u"name") - if name: message += u"$(cyn)" + name + u"$(nrm)$(eol)" - description = element.get(u"description") - if description: message += description + u"$(eol)" - portal_list = element.portals().keys() - if portal_list: - portal_list.sort() - message += u"$(cyn)[ Exits: " + u", ".join( - portal_list - ) + u" ]$(nrm)$(eol)" - for element in self.universe.contents[ - self.get(u"location") - ].contents.values(): - if element.getboolean(u"is_actor") and element is not self: - message += u"$(yel)" + element.get( - u"name" - ) + u" is here.$(nrm)$(eol)" - elif element is not self: - message += u"$(grn)" + element.get( - u"impression" - ) + u"$(nrm)$(eol)" - self.send(message) - def portals(self): - u"""Map the portal directions for a room to neighbors.""" - import re - portals = {} - if re.match(u"""^location:-?\d+,-?\d+,-?\d+$""", self.key): - coordinates = [(int(x)) for x in self.key.split(u":")[1].split(u",")] - directions = self.universe.categories[u"internal"][u"directions"] - offsets = dict( - [ - ( - x, directions.getdict(x)[u"vector"] - ) for x in directions.facets() - ] - ) - for portal in self.getlist(u"gridlinks"): - adjacent = map(lambda c,o: c+o, coordinates, offsets[portal]) - neighbor = u"location:" + u",".join( - [(unicode(x)) for x in adjacent] - ) - if neighbor in self.universe.contents: portals[portal] = neighbor - for facet in self.facets(): - if facet.startswith(u"link_"): - neighbor = self.get(facet) - if neighbor in self.universe.contents: - portal = facet.split(u"_")[1] - portals[portal] = neighbor - return portals - def link_neighbor(self, direction): - u"""Return the element linked in a given direction.""" - portals = self.portals() - if direction in portals: return portals[direction] - def echo_to_location(self, message): - u"""Show a message to other elements in the current location.""" - for element in self.universe.contents[ - self.get(u"location") - ].contents.values(): - if element is not self: element.send(message) - -class DataFile: - u"""A file containing universe elements.""" - def __init__(self, filename, universe): - self.filename = filename - self.universe = universe - self.load() - def load(self): - u"""Read a file and create elements accordingly.""" - import ConfigParser, os, os.path - self.data = ConfigParser.RawConfigParser() - self.modified = False - if os.access(self.filename, os.R_OK): self.data.read(self.filename) - if not hasattr(self.universe, u"files"): self.universe.files = {} - self.universe.files[self.filename] = self - includes = [] - if self.data.has_option(u"__control__", u"include_files"): - for included in makelist( - self.data.get(u"__control__", u"include_files") - ): - included = find_file( - included, - relative=self.filename, - universe=self.universe - ) - if included not in includes: includes.append(included) - if self.data.has_option(u"__control__", u"include_dirs"): - for included in [ os.path.join(x, u"__init__.mpy") for x in makelist( - self.data.get(u"__control__", u"include_dirs") - ) ]: - included = find_file( - included, - relative=self.filename, - universe=self.universe - ) - if included not in includes: includes.append(included) - if self.data.has_option(u"__control__", u"default_files"): - origins = makedict(self.data.get(u"__control__", u"default_files")) - for key in origins.keys(): - origins[key] = find_file( - origins[key], - relative=self.filename, - universe=self.universe - ) - if origins[key] not in includes: includes.append(origins[key]) - self.universe.default_origins[key] = origins[key] - if key not in self.universe.categories: - self.universe.categories[key] = {} - if self.data.has_option(u"__control__", u"private_files"): - for item in makelist(self.data.get(u"__control__", u"private_files")): - item = find_file( - item, - relative=self.filename, - universe=self.universe - ) - if item not in includes: includes.append(item) - if item not in self.universe.private_files: - self.universe.private_files.append(item) - for section in self.data.sections(): - if section != u"__control__": - Element(section, self.universe, self.filename) - for include_file in includes: - if not os.path.isabs(include_file): - include_file = find_file( - include_file, - relative=self.filename, - universe=self.universe - ) - if include_file not in self.universe.files or not self.universe.files[ - include_file - ].is_writeable(): - DataFile(include_file, self.universe) - def save(self): - u"""Write the data, if necessary.""" - import codecs, os, os.path, re, stat - - # when modified, writeable and has content or the file exists - if self.modified and self.is_writeable() and ( - self.data.sections() or os.path.exists(self.filename) - ): - - # make parent directories if necessary - if not os.path.exists(os.path.dirname(self.filename)): - os.makedirs(os.path.dirname(self.filename)) - - # backup the file - if self.data.has_option(u"__control__", u"backup_count"): - max_count = self.data.has_option(u"__control__", u"backup_count") - else: - max_count = universe.categories[u"internal"][u"limits"].getint( - u"default_backup_count" - ) - if os.path.exists(self.filename) and max_count: - backups = [] - for candidate in os.listdir(os.path.dirname(self.filename)): - if re.match( - os.path.basename(self.filename) + u"""\.\d+$""", candidate - ): - backups.append(int(candidate.split(u".")[-1])) - backups.sort() - backups.reverse() - for old_backup in backups: - if old_backup >= max_count-1: - os.remove(self.filename+u"."+unicode(old_backup)) - elif not os.path.exists( - self.filename+u"."+unicode(old_backup+1) - ): - os.rename( - self.filename + u"."+unicode(old_backup), - self.filename + u"."+unicode( old_backup + 1 ) - ) - if not os.path.exists(self.filename+u".0"): - os.rename( self.filename, self.filename + u".0" ) - - # our data file - file_descriptor = codecs.open(self.filename, u"w", u"utf-8") - - # if it's marked private, chmod it appropriately - if self.filename in self.universe.private_files and oct( - stat.S_IMODE( os.stat(self.filename)[stat.ST_MODE] ) - ) != 0600: - os.chmod(self.filename, 0600) - - # write it back sorted, instead of using ConfigParser - sections = self.data.sections() - sections.sort() - for section in sections: - file_descriptor.write(u"[" + section + u"]\n") - options = self.data.options(section) - options.sort() - for option in options: - file_descriptor.write( - option + u" = " + self.data.get(section, option) + u"\n" - ) - file_descriptor.write(u"\n") - - # flush and close the file - file_descriptor.flush() - file_descriptor.close() - - # unset the modified flag - self.modified = False - def is_writeable(self): - u"""Returns True if the __control__ read_only is False.""" - return not self.data.has_option( - u"__control__", u"read_only" - ) or not self.data.getboolean( - u"__control__", u"read_only" - ) - -class Universe: - u"""The universe.""" - - def __init__(self, filename=u"", load=False): - u"""Initialize the universe.""" - import os, os.path - self.categories = {} - self.contents = {} - self.default_origins = {} - self.loglines = [] - self.pending_events_long = {} - self.pending_events_short = {} - self.private_files = [] - self.reload_flag = False - self.startdir = os.getcwd() - self.terminate_flag = False - self.userlist = [] - if not filename: - possible_filenames = [ - u".mudpyrc", - u".mudpy/mudpyrc", - u".mudpy/mudpy.conf", - u"mudpy.conf", - u"etc/mudpy.conf", - u"/usr/local/mudpy/mudpy.conf", - u"/usr/local/mudpy/etc/mudpy.conf", - u"/etc/mudpy/mudpy.conf", - u"/etc/mudpy.conf" - ] - for filename in possible_filenames: - if os.access(filename, os.R_OK): break - if not os.path.isabs(filename): - filename = os.path.join(self.startdir, filename) - self.filename = filename - if load: self.load() - - def load(self): - u"""Load universe data from persistent storage.""" - - # the files dict must exist and filename needs to be read-only - if not hasattr( - self, u"files" - ) or not ( - self.filename in self.files and self.files[ - self.filename - ].is_writeable() - ): - - # clear out all read-only files - if hasattr(self, u"files"): - for data_filename in self.files.keys(): - if not self.files[data_filename].is_writeable(): - del self.files[data_filename] - - # start loading from the initial file - DataFile(self.filename, self) - - # make a list of inactive avatars - inactive_avatars = [] - for account in self.categories[u"account"].values(): - inactive_avatars += [ - (self.contents[x]) for x in account.getlist(u"avatars") - ] - for user in self.userlist: - if user.avatar in inactive_avatars: - inactive_avatars.remove(user.avatar) - - # go through all elements to clear out inactive avatar locations - for element in self.contents.values(): - location = element.get(u"location") - if element in inactive_avatars and location: - if location in self.contents and element.key in self.contents[ - location - ].contents: - del self.contents[location].contents[element.key] - element.set(u"default_location", location) - element.remove_facet(u"location") - - # another pass to straighten out all the element contents - for element in self.contents.values(): - element.update_location() - element.clean_contents() - - def new(self): - u"""Create a new, empty Universe (the Big Bang).""" - new_universe = Universe() - for attribute in vars(self).keys(): - exec(u"new_universe." + attribute + u" = self." + attribute) - new_universe.reload_flag = False - del self - return new_universe - - def save(self): - u"""Save the universe to persistent storage.""" - for key in self.files: self.files[key].save() - - def initialize_server_socket(self): - u"""Create and open the listening socket.""" - import socket - - # need to know the local address and port number for the listener - host = self.categories[u"internal"][u"network"].get(u"host") - port = self.categories[u"internal"][u"network"].getint(u"port") - - # if no host was specified, bind to all local addresses (preferring ipv6) - if not host: - if socket.has_ipv6: host = u"::" - else: host = u"0.0.0.0" - - # figure out if this is ipv4 or v6 - family = socket.getaddrinfo(host, port)[0][0] - if family is socket.AF_INET6 and not socket.has_ipv6: - log(u"No support for IPv6 address %s (use IPv4 instead)." % host) - - # create a new stream-type socket object - self.listening_socket = socket.socket(family, socket.SOCK_STREAM) - - # set the socket options to allow existing open ones to be - # reused (fixes a bug where the server can't bind for a minute - # when restarting on linux systems) - self.listening_socket.setsockopt( - socket.SOL_SOCKET, socket.SO_REUSEADDR, 1 - ) - - # bind the socket to to our desired server ipa and port - self.listening_socket.bind((host, port)) - - # disable blocking so we can proceed whether or not we can - # send/receive - self.listening_socket.setblocking(0) - - # start listening on the socket - self.listening_socket.listen(1) - - # note that we're now ready for user connections - log( - u"Listening for Telnet connections on: " + host + u":" + unicode(port) - ) - - def get_time(self): - u"""Convenience method to get the elapsed time counter.""" - return self.categories[u"internal"][u"counters"].getint(u"elapsed") - -class User: - u"""This is a connected user.""" - - def __init__(self): - u"""Default values for the in-memory user variables.""" - self.account = None - self.address = u"" - self.authenticated = False - self.avatar = None - self.client_displays_binary = False - self.client_sends_binary = False - self.columns = 79 - self.connection = None - self.echoing = True - self.error = u"" - self.input_queue = [] - self.last_address = u"" - self.last_input = universe.get_time() - self.menu_choices = {} - self.menu_seen = False - self.negotiation_pause = 0 - self.output_queue = [] - self.partial_input = "" - self.password_tries = 0 - self.received_newline = True - self.state = u"initial" - self.terminator = telnet_proto([u"IAC",u"GA"]) - - def quit(self): - u"""Log, close the connection and remove.""" - if self.account: name = self.account.get(u"name") - else: name = u"" - if name: message = u"User " + name - else: message = u"An unnamed user" - message += u" logged out." - log(message, 2) - self.deactivate_avatar() - self.connection.close() - self.remove() - - def check_idle(self): - u"""Warn or disconnect idle users as appropriate.""" - idletime = universe.get_time() - self.last_input - linkdead_dict = universe.categories[u"internal"][u"time"].getdict( - u"linkdead" - ) - if self.state in linkdead_dict: linkdead_state = self.state - else: linkdead_state = u"default" - if idletime > linkdead_dict[linkdead_state]: - self.send( - u"$(eol)$(red)You've done nothing for far too long... goodbye!" \ - + u"$(nrm)$(eol)", - flush=True, - add_prompt=False - ) - logline = u"Disconnecting " - if self.account and self.account.get(u"name"): - logline += self.account.get(u"name") - else: - logline += u"an unknown user" - logline += u" after idling too long in the " + self.state + u" state." - log(logline, 2) - self.state = u"disconnecting" - self.menu_seen = False - idle_dict = universe.categories[u"internal"][u"time"].getdict(u"idle") - if self.state in idle_dict: idle_state = self.state - else: idle_state = u"default" - if idletime == idle_dict[idle_state]: - self.send( - u"$(eol)$(red)If you continue to be unproductive, " \ - + u"you'll be shown the door...$(nrm)$(eol)" - ) - - def reload(self): - u"""Save, load a new user and relocate the connection.""" - - # get out of the list - self.remove() - - # create a new user object - new_user = User() - - # set everything equivalent - for attribute in vars(self).keys(): - exec(u"new_user." + attribute + u" = self." + attribute) - - # the avatar needs a new owner - if new_user.avatar: new_user.avatar.owner = new_user - - # add it to the list - universe.userlist.append(new_user) - - # get rid of the old user object - del(self) - - def replace_old_connections(self): - u"""Disconnect active users with the same name.""" - - # the default return value - return_value = False - - # iterate over each user in the list - for old_user in universe.userlist: - - # the name is the same but it's not us - if hasattr( - old_user, u"account" - ) and old_user.account and old_user.account.get( - u"name" - ) == self.account.get( - u"name" - ) and old_user is not self: - - # make a note of it - log( - u"User " + self.account.get( - u"name" - ) + u" reconnected--closing old connection to " \ - + old_user.address + u".", - 2 - ) - old_user.send( - u"$(eol)$(red)New connection from " + self.address \ - + u". Terminating old connection...$(nrm)$(eol)", \ - flush=True, - add_prompt=False - ) - - # close the old connection - old_user.connection.close() - - # replace the old connection with this one - old_user.send( - u"$(eol)$(red)Taking over old connection from " \ - + old_user.address + u".$(nrm)" - ) - old_user.connection = self.connection - old_user.last_address = old_user.address - old_user.address = self.address - old_user.client_displays_binary = self.client_displays_binary - old_user.client_sends_binary = self.client_sends_binary - - # may need to tell the new connection to echo - if old_user.echoing: - old_user.send( - get_echo_sequence(old_user.state, self.echoing), raw=True - ) - - # take this one out of the list and delete - self.remove() - del(self) - return_value = True - break - - # true if an old connection was replaced, false if not - return return_value - - def authenticate(self): - u"""Flag the user as authenticated and disconnect duplicates.""" - if not self.state is u"authenticated": - log(u"User " + self.account.get(u"name") + u" logged in.", 2) - self.authenticated = True - if self.account.subkey in universe.categories[ - u"internal" - ][ - u"limits" - ].getlist( - u"default_admins" - ): - self.account.set(u"administrator", u"True") - - def show_menu(self): - u"""Send the user their current menu.""" - if not self.menu_seen: - self.menu_choices = get_menu_choices(self) - self.send( - get_menu(self.state, self.error, self.menu_choices), - u"", - add_terminator=True - ) - self.menu_seen = True - self.error = False - self.adjust_echoing() - - def adjust_echoing(self): - u"""Adjust echoing to match state menu requirements.""" - if self.echoing and not menu_echo_on(self.state): self.echoing = False - elif not self.echoing and menu_echo_on(self.state): self.echoing = True - - def remove(self): - u"""Remove a user from the list of connected users.""" - universe.userlist.remove(self) - - def send( - self, - output, - eol=u"$(eol)", - raw=False, - flush=False, - add_prompt=True, - just_prompt=False, - add_terminator=False - ): - u"""Send arbitrary text to a connected user.""" - - # unless raw mode is on, clean it up all nice and pretty - if not raw: - - # strip extra $(eol) off if present - while output.startswith(u"$(eol)"): output = output[6:] - while output.endswith(u"$(eol)"): output = output[:-6] - extra_lines = output.find(u"$(eol)$(eol)$(eol)") - while extra_lines > -1: - output = output[:extra_lines] + output[extra_lines+6:] - extra_lines = output.find(u"$(eol)$(eol)$(eol)") - - # start with a newline, append the message, then end - # with the optional eol string passed to this function - # and the ansi escape to return to normal text - if not just_prompt: - if not self.output_queue or not self.output_queue[-1].endswith( - "\r\n" - ): - output = u"$(eol)$(eol)" + output - elif not self.output_queue[-1].endswith( - "\r\n\x1b[0m\r\n" - ) and not self.output_queue[-1].endswith( - "\r\n\r\n" - ): - output = u"$(eol)" + output - output += eol + unichr(27) + u"[0m" - - # tack on a prompt if active - if self.state == u"active": - if not just_prompt: output += u"$(eol)" - if add_prompt: - output += u"> " - mode = self.avatar.get(u"mode") - if mode: output += u"(" + mode + u") " - - # find and replace macros in the output - output = replace_macros(self, output) - - # wrap the text at the client's width (min 40, 0 disables) - if self.columns: - if self.columns < 40: wrap = 40 - else: wrap = self.columns - output = wrap_ansi_text(output, wrap) - - # if supported by the client, encode it utf-8 - if self.client_displays_binary: - encoded_output = output.encode(u"utf-8") - - # otherwise just send ascii - else: - encoded_output = output.encode(u"ascii", u"replace") - - # inject appropriate echoing changes - encoded_output += get_echo_sequence(self.state, self.echoing) - - # end with a terminator if requested - if add_terminator: encoded_output += self.terminator - - # and tack it onto the queue - self.output_queue.append(encoded_output) - - # if this is urgent, flush all pending output - if flush: self.flush() - - # just dump raw bytes as requested - else: - self.output_queue.append(output) - self.flush() - - def pulse(self): - u"""All the things to do to the user per increment.""" - - # if the world is terminating, disconnect - if universe.terminate_flag: - self.state = u"disconnecting" - self.menu_seen = False - - # check for an idle connection and act appropriately - else: self.check_idle() - - # if output is paused, decrement the counter - if self.state == u"initial": - if self.negotiation_pause: self.negotiation_pause -= 1 - else: self.state = u"entering_account_name" - - # show the user a menu as needed - elif not self.state == u"active": self.show_menu() - - # flush any pending output in the queue - self.flush() - - # disconnect users with the appropriate state - if self.state == u"disconnecting": self.quit() - - # check for input and add it to the queue - self.enqueue_input() - - # there is input waiting in the queue - if self.input_queue: - handle_user_input(self) - - def flush(self): - u"""Try to send the last item in the queue and remove it.""" - if self.output_queue: - if self.received_newline: - self.received_newline = False - if self.output_queue[0].startswith("\r\n"): - self.output_queue[0] = self.output_queue[0][2:] - try: - self.connection.send(self.output_queue[0]) - del self.output_queue[0] - except: - if self.account and self.account.get(u"name"): - account = self.account.get(u"name") - else: account = u"an unknown user" - log( - u"Sending to %s raised an exception (broken pipe?)." % account, - 7 - ) - pass - - - def enqueue_input(self): - u"""Process and enqueue any new input.""" - import unicodedata - - # check for some input - try: - raw_input = self.connection.recv(1024) - except: - raw_input = "" - - # we got something - if raw_input: - - # tack this on to any previous partial - self.partial_input += raw_input - - # reply to and remove any IAC negotiation codes - self.negotiate_telnet_options() - - # separate multiple input lines - new_input_lines = self.partial_input.split("\n") - - # if input doesn't end in a newline, replace the - # held partial input with the last line of it - if not self.partial_input.endswith("\n"): - self.partial_input = new_input_lines.pop() - - # otherwise, chop off the extra null input and reset - # the held partial input - else: - new_input_lines.pop() - self.partial_input = "" - - # iterate over the remaining lines - for line in new_input_lines: - - # strip off extra whitespace - line = line.strip() - - # make sure it's valid unicode (probably no longer needed) - try: unicode(line, u"utf-8") - except UnicodeDecodeError: - logline = u"Non-unicode data from " - if self.account and self.account.get(u"name"): - logline += self.account.get(u"name") + u": " - else: logline += u"unknown user: " - logline += repr(line) - log(logline, 4) - line = "" - - # log non-printable characters remaining - if not hasattr( - self, u"client_sends_binary" - ) or not self.client_sends_binary: - asciiline = filter(lambda x: " " <= x <= "~", line) - if line != asciiline: - logline = u"Non-ASCII characters from " - if self.account and self.account.get(u"name"): - logline += self.account.get(u"name") + u": " - else: logline += u"unknown user: " - logline += repr(line) - log(logline, 4) - line = asciiline - - # put on the end of the queue - self.input_queue.append( - unicodedata.normalize( u"NFKC", unicode(line, u"utf-8") ) - ) - - def negotiate_telnet_options(self): - u"""Reply to/remove partial_input telnet negotiation options.""" - - # start at the begining of the input - position = 0 - - # make a local copy to play with - text = self.partial_input - - # as long as we haven't checked it all - while position < len(text): - - # jump to the first IAC you find - position = text.find(telnet_proto([u"IAC"]), position) - - # if there wasn't an IAC in the input, we're done - if position < 0: break - - # replace a double (literal) IAC if there's an LF later - elif len(text) > position+1 and text[position+1] == telnet_proto( - [u"IAC"] - ): - if text.find("\n", position) > 0: - text = text.replace( - telnet_proto([u"IAC",u"IAC"]), telnet_proto([u"IAC"]) - ) - else: position += 1 - position += 1 - - # implement an RFC 1143 option negotiation queue here - elif len(text) > position+2 and text[position+1] in ( - telnet_proto([u"DO",u"DONT",u"WILL",u"WONT"]) - ): - negotiation = text[position+1:position+3] - - # if we turned echo off, ignore the confirmation - if not self.echoing and negotiation == telnet_proto( - [u"DO",u"TELOPT_ECHO"] - ): - self.send( - telnet_proto([u"IAC",u"WILL",u"TELOPT_ECHO"]), raw=True - ) - - # BINARY mode handling for unicode support (RFC 856) - elif negotiation == telnet_proto([u"DO",u"TELOPT_BINARY"]): - self.send( - telnet_proto([u"IAC",u"WILL",u"TELOPT_BINARY"]), raw=True - ) - self.client_displays_binary = True - elif negotiation == telnet_proto([u"DONT",u"TELOPT_BINARY"]): - self.send( - telnet_proto([u"IAC",u"WONT",u"TELOPT_BINARY"]), raw=True - ) - self.client_displays_binary = False - elif negotiation == telnet_proto([u"WILL",u"TELOPT_BINARY"]): - self.send( - telnet_proto([u"IAC",u"DO",u"TELOPT_BINARY"]), raw=True - ) - self.client_sends_binary = True - elif negotiation == telnet_proto([u"WONT",u"TELOPT_BINARY"]): - self.send( - telnet_proto([u"IAC",u"DONT",u"TELOPT_BINARY"]), raw=True - ) - self.client_sends_binary = False - - # allow LINEMODE (RFC 1184) - elif negotiation == telnet_proto([u"WILL",u"TELOPT_LINEMODE"]): - self.send( - telnet_proto([u"IAC",u"DO",u"TELOPT_LINEMODE"]), raw=True - ) - elif negotiation == telnet_proto([u"WONT",u"TELOPT_LINEMODE"]): - self.send( - telnet_proto([u"IAC",u"DONT",u"TELOPT_LINEMODE"]), raw=True - ) - - # allow NAWS (RFC 1073) - elif negotiation == telnet_proto([u"WILL",u"TELOPT_NAWS"]): - self.send( - telnet_proto([u"IAC",u"DO",u"TELOPT_NAWS"]), raw=True - ) - elif negotiation == telnet_proto([u"WONT",u"TELOPT_NAWS"]): - self.send( - telnet_proto([u"IAC",u"DONT",u"TELOPT_NAWS"]), raw=True - ) - - # if the client likes EOR (RFC 885) instead of GA, note it - elif negotiation == telnet_proto([u"DO",u"TELOPT_EOR"]): - self.send( - telnet_proto([u"IAC",u"WILL",u"TELOPT_EOR"]), raw=True - ) - self.terminator = telnet_proto([u"IAC",u"EOR"]) - elif negotiation == telnet_proto([u"DONT",u"TELOPT_EOR"]): - self.send( - telnet_proto([u"IAC",u"WONT",u"TELOPT_EOR"]), raw=True - ) - if self.terminator == telnet_proto([u"IAC",u"EOR"]): - self.terminator = telnet_proto([u"IAC",u"GA"]) - - # if the client doesn't want GA, oblige (RFC 858) - elif negotiation == telnet_proto([u"DO",u"TELOPT_SGA"]): - self.send(telnet_proto([u"IAC",u"WILL",u"TELOPT_SGA"]), - raw=True) - if self.terminator == telnet_proto([u"IAC",u"GA"]): - self.terminator = "" - - # we don't want to allow anything else - elif text[position+1] == telnet_proto([u"DO"]): - self.send( - telnet_proto([u"IAC",u"WONT"])+text[position+2], raw=True - ) - elif text[position+1] == telnet_proto([u"WILL"]): - self.send( - telnet_proto([u"IAC",u"DONT"])+text[position+2], raw=True - ) - - # strip the negotiation from the input - text = text.replace(text[position:position+3], "") - - # subnegotiation options - elif len(text) > position+4 and text[ - position:position+2 - ] == telnet_proto([u"IAC",u"SB"]): - if text[position+2] == telnet_proto([u"TELOPT_NAWS"]): - self.columns = ord(text[position+3])*256+ord(text[position+4]) - end_subnegotiation = text.find( - telnet_proto([u"IAC",u"SE"]), position - ) - if end_subnegotiation > 0: - text = text[:position] + text[end_subnegotiation+2:] - else: position += 1 - - # otherwise, strip out a two-byte IAC command - elif len(text) > position+2: - text = text.replace(text[position:position+2], "") - - # and this means we got the begining of an IAC - else: position += 1 - - # replace the input with our cleaned-up text - self.partial_input = text - - def new_avatar(self): - u"""Instantiate a new, unconfigured avatar for this user.""" - counter = 0 - while u"avatar:" + self.account.get(u"name") + u":" + unicode( - counter - ) in universe.categories[u"actor"].keys(): - counter += 1 - self.avatar = Element( - u"actor:avatar:" + self.account.get(u"name") + u":" + unicode( - counter - ), - universe - ) - self.avatar.append(u"inherit", u"archetype:avatar") - self.account.append(u"avatars", self.avatar.key) - - def delete_avatar(self, avatar): - u"""Remove an avatar from the world and from the user's list.""" - if self.avatar is universe.contents[avatar]: self.avatar = None - universe.contents[avatar].destroy() - avatars = self.account.getlist(u"avatars") - avatars.remove(avatar) - self.account.set(u"avatars", avatars) - - def activate_avatar_by_index(self, index): - u"""Enter the world with a particular indexed avatar.""" - self.avatar = universe.contents[self.account.getlist(u"avatars")[index]] - self.avatar.owner = self - self.state = u"active" - self.avatar.go_home() - - def deactivate_avatar(self): - u"""Have the active avatar leave the world.""" - if self.avatar: - current = self.avatar.get(u"location") - if current: - self.avatar.set(u"default_location", current) - self.avatar.echo_to_location( - u"You suddenly wonder where " + self.avatar.get( - u"name" - ) + u" went." - ) - del universe.contents[current].contents[self.avatar.key] - self.avatar.remove_facet(u"location") - self.avatar.owner = None - self.avatar = None - - def destroy(self): - u"""Destroy the user and associated avatars.""" - for avatar in self.account.getlist(u"avatars"): - self.delete_avatar(avatar) - self.account.destroy() - - def list_avatar_names(self): - u"""List names of assigned avatars.""" - return [ - universe.contents[avatar].get( - u"name" - ) for avatar in self.account.getlist(u"avatars") - ] - -def makelist(value): - u"""Turn string into list type.""" - if value[0] + value[-1] == u"[]": return eval(value) - elif value[0] + value[-1] == u"\"\"": return [ value[1:-1] ] - else: return [ value ] - -def makedict(value): - u"""Turn string into dict type.""" - if value[0] + value[-1] == u"{}": return eval(value) - elif value.find(u":") > 0: return eval(u"{" + value + u"}") - else: return { value: None } - -def telnet_proto(arguments): - u"""Return a concatenated series of Telnet protocol commands.""" - - # same names as bsd's arpa/telnet.h (telnetlib's are ambiguous) - telnet_commands = { - u"TELOPT_BINARY": 0, # RFC 856 - u"TELOPT_ECHO": 1, # RFC 857 - u"TELOPT_SGA": 3, # RFC 858 - u"TELOPT_EOR": 25, # RFC 885 - u"TELOPT_NAWS": 31, # RFC 1073 - u"TELOPT_LINEMODE": 34, # RFC 1184 - u"EOR": 239, - u"SE": 240, - u"GA": 249, - u"SB": 250, - u"WILL": 251, - u"WONT": 252, - u"DO": 253, - u"DONT": 254, - u"IAC": 255 - } - - # (this will need to be byte type during 2to3 migration) - command_series = "" - for argument in arguments: - command_series += chr(telnet_commands[argument]) - return command_series - -def broadcast(message, add_prompt=True): - u"""Send a message to all connected users.""" - for each_user in universe.userlist: - each_user.send(u"$(eol)" + message, add_prompt=add_prompt) - -def log(message, level=0): - u"""Log a message.""" - import codecs, os.path, syslog, time - - # a couple references we need - file_name = universe.categories[u"internal"][u"logging"].get(u"file") - max_log_lines = universe.categories[u"internal"][u"logging"].getint( - u"max_log_lines" - ) - syslog_name = universe.categories[u"internal"][u"logging"].get(u"syslog") - timestamp = time.asctime()[4:19] - - # turn the message into a list of lines - lines = filter( - lambda x: x!=u"", [ (x.rstrip()) for x in message.split(u"\n") ] - ) - - # send the timestamp and line to a file - if file_name: - if not os.path.isabs(file_name): - file_name = os.path.join(universe.startdir, file_name) - file_descriptor = codecs.open(file_name, u"a", u"utf-8") - for line in lines: file_descriptor.write(timestamp + u" " + line + u"\n") - file_descriptor.flush() - file_descriptor.close() - - # send the timestamp and line to standard output - if universe.categories[u"internal"][u"logging"].getboolean(u"stdout"): - for line in lines: print(timestamp + u" " + line) - - # send the line to the system log - if syslog_name: - syslog.openlog( - syslog_name.encode("utf-8"), - syslog.LOG_PID, - syslog.LOG_INFO | syslog.LOG_DAEMON - ) - for line in lines: syslog.syslog(line) - syslog.closelog() - - # display to connected administrators - for user in universe.userlist: - if user.state == u"active" and user.account.getboolean( - u"administrator" - ) and user.account.getint(u"loglevel") <= level: - # iterate over every line in the message - full_message = u"" - for line in lines: - full_message += u"$(bld)$(red)" + timestamp + u" " + line.replace( - u"$(", u"$_(" - ) + u"$(nrm)$(eol)" - user.send(full_message, flush=True) - - # add to the recent log list - for line in lines: - while 0 < len(universe.loglines) >= max_log_lines: - del universe.loglines[0] - universe.loglines.append((level, timestamp + u" " + line)) - -def get_loglines(level, start, stop): - u"""Return a specific range of loglines filtered by level.""" - - # filter the log lines - loglines = filter(lambda x: x[0]>=level, universe.loglines) - - # we need these in several places - total_count = unicode(len(universe.loglines)) - filtered_count = len(loglines) - - # don't proceed if there are no lines - if filtered_count: - - # can't start before the begining or at the end - if start > filtered_count: start = filtered_count - if start < 1: start = 1 - - # can't stop before we start - if stop > start: stop = start - elif stop < 1: stop = 1 - - # some preamble - message = u"There are " + unicode(total_count) - message += u" log lines in memory and " + unicode(filtered_count) - message += u" at or above level " + unicode(level) + u"." - message += u" The matching lines from " + unicode(stop) + u" to " - message += unicode(start) + u" are:$(eol)$(eol)" - - # add the text from the selected lines - if stop > 1: range_lines = loglines[-start:-(stop-1)] - else: range_lines = loglines[-start:] - for line in range_lines: - message += u" (" + unicode(line[0]) + u") " + line[1].replace( - u"$(", u"$_(" - ) + u"$(eol)" - - # there were no lines - else: - message = u"None of the " + unicode(total_count) - message += u" lines in memory matches your request." - - # pass it back - return message - -def glyph_columns(character): - u"""Convenience function to return the column width of a glyph.""" - import unicodedata - if unicodedata.east_asian_width(character) in u"FW": return 2 - else: return 1 - -def wrap_ansi_text(text, width): - u"""Wrap text with arbitrary width while ignoring ANSI colors.""" - import unicodedata - - # the current position in the entire text string, including all - # characters, printable or otherwise - absolute_position = 0 - - # the current text position relative to the begining of the line, - # ignoring color escape sequences - relative_position = 0 - - # the absolute position of the most recent whitespace character - last_whitespace = 0 - - # whether the current character is part of a color escape sequence - escape = False - - # normalize any potentially composited unicode before we count it - text = unicodedata.normalize(u"NFKC", text) - - # iterate over each character from the begining of the text - for each_character in text: - - # the current character is the escape character - if each_character == u"\x1b" and not escape: - escape = True - - # the current character is within an escape sequence - elif escape: - - # the current character is m, which terminates the - # escape sequence - if each_character == u"m": - escape = False - - # the current character is a newline, so reset the relative - # position (start a new line) - elif each_character == u"\n": - relative_position = 0 - last_whitespace = absolute_position - - # the current character meets the requested maximum line width, - # so we need to backtrack and find a space at which to wrap; - # special care is taken to avoid an off-by-one in case the - # current character is a double-width glyph - elif each_character != u"\r" and ( - relative_position >= width or ( - relative_position >= width -1 and glyph_columns( - each_character - ) == 2 - ) - ): - - # it's always possible we landed on whitespace - if unicodedata.category(each_character) in (u"Cc",u"Zs"): - last_whitespace = absolute_position - - # insert an eol in place of the space - text = text[:last_whitespace] + u"\r\n" + text[last_whitespace + 1:] - - # increase the absolute position because an eol is two - # characters but the space it replaced was only one - absolute_position += 1 - - # now we're at the begining of a new line, plus the - # number of characters wrapped from the previous line - relative_position = 0 - for remaining_characters in text[last_whitespace:absolute_position]: - relative_position += glyph_columns(remaining_characters) - - # as long as the character is not a carriage return and the - # other above conditions haven't been met, count it as a - # printable character - elif each_character != u"\r": - relative_position += glyph_columns(each_character) - if unicodedata.category(each_character) in (u"Cc",u"Zs"): - last_whitespace = absolute_position - - # increase the absolute position for every character - absolute_position += 1 - - # return the newly-wrapped text - return text - -def weighted_choice(data): - u"""Takes a dict weighted by value and returns a random key.""" - import random - - # this will hold our expanded list of keys from the data - expanded = [] - - # create the expanded list of keys - for key in data.keys(): - for count in range(data[key]): - expanded.append(key) - - # return one at random - return random.choice(expanded) - -def random_name(): - u"""Returns a random character name.""" - import random - - # the vowels and consonants needed to create romaji syllables - vowels = [ - u"a", - u"i", - u"u", - u"e", - u"o" - ] - consonants = [ - u"'", - u"k", - u"z", - u"s", - u"sh", - u"z", - u"j", - u"t", - u"ch", - u"ts", - u"d", - u"n", - u"h", - u"f", - u"m", - u"y", - u"r", - u"w" - ] - - # this dict will hold our weighted list of syllables - syllables = {} - - # generate the list with an even weighting - for consonant in consonants: - for vowel in vowels: - syllables[consonant + vowel] = 1 - - # we'll build the name into this string - name = u"" - - # create a name of random length from the syllables - for syllable in range(random.randrange(2, 6)): - name += weighted_choice(syllables) - - # strip any leading quotemark, capitalize and return the name - return name.strip(u"'").capitalize() - -def replace_macros(user, text, is_input=False): - u"""Replaces macros in text output.""" - import codecs, os.path - - # third person pronouns - pronouns = { - u"female": { u"obj": u"her", u"pos": u"hers", u"sub": u"she" }, - u"male": { u"obj": u"him", u"pos": u"his", u"sub": u"he" }, - u"neuter": { u"obj": u"it", u"pos": u"its", u"sub": u"it" } - } - - # a dict of replacement macros - macros = { - u"eol": u"\r\n", - u"bld": unichr(27) + u"[1m", - u"nrm": unichr(27) + u"[0m", - u"blk": unichr(27) + u"[30m", - u"blu": unichr(27) + u"[34m", - u"cyn": unichr(27) + u"[36m", - u"grn": unichr(27) + u"[32m", - u"mgt": unichr(27) + u"[35m", - u"red": unichr(27) + u"[31m", - u"yel": unichr(27) + u"[33m", - } - - # add dynamic macros where possible - if user.account: - account_name = user.account.get(u"name") - if account_name: - macros[u"account"] = account_name - if user.avatar: - avatar_gender = user.avatar.get(u"gender") - if avatar_gender: - macros[u"tpop"] = pronouns[avatar_gender][u"obj"] - macros[u"tppp"] = pronouns[avatar_gender][u"pos"] - macros[u"tpsp"] = pronouns[avatar_gender][u"sub"] - - # loop until broken - while True: - - # find and replace per the macros dict - macro_start = text.find(u"$(") - if macro_start == -1: break - macro_end = text.find(u")", macro_start) + 1 - macro = text[macro_start+2:macro_end-1] - if macro in macros.keys(): - replacement = macros[macro] - - # this is how we handle local file inclusion (dangerous!) - elif macro.startswith(u"inc:"): - incfile = find_file(macro[4:], universe=universe) - if os.path.exists(incfile): - incfd = codecs.open(incfile, u"r", u"utf-8") - replacement = u"" - for line in incfd: - if line.endswith(u"\n") and not line.endswith(u"\r\n"): - line = line.replace(u"\n", u"\r\n") - replacement += line - # lose the trailing eol - replacement = replacement[:-2] - else: - replacement = u"" - log(u"Couldn't read included " + incfile + u" file.", 6) - - # if we get here, log and replace it with null - else: - replacement = u"" - if not is_input: - log(u"Unexpected replacement macro " + macro + u" encountered.", 6) - - # and now we act on the replacement - text = text.replace(u"$(" + macro + u")", replacement) - - # replace the look-like-a-macro sequence - text = text.replace(u"$_(", u"$(") - - return text - -def escape_macros(text): - u"""Escapes replacement macros in text.""" - return text.replace(u"$(", u"$_(") - -def first_word(text, separator=u" "): - u"""Returns a tuple of the first word and the rest.""" - if text: - if text.find(separator) > 0: return text.split(separator, 1) - else: return text, u"" - else: return u"", u"" - -def on_pulse(): - u"""The things which should happen on each pulse, aside from reloads.""" - import time - - # open the listening socket if it hasn't been already - if not hasattr(universe, u"listening_socket"): - universe.initialize_server_socket() - - # assign a user if a new connection is waiting - user = check_for_connection(universe.listening_socket) - if user: universe.userlist.append(user) - - # iterate over the connected users - for user in universe.userlist: user.pulse() - - # add an element for counters if it doesn't exist - if not u"counters" in universe.categories[u"internal"]: - universe.categories[u"internal"][u"counters"] = Element( - u"internal:counters", universe - ) - - # update the log every now and then - if not universe.categories[u"internal"][u"counters"].getint(u"mark"): - log(unicode(len(universe.userlist)) + u" connection(s)") - universe.categories[u"internal"][u"counters"].set( - u"mark", universe.categories[u"internal"][u"time"].getint( - u"frequency_log" - ) - ) - else: - universe.categories[u"internal"][u"counters"].set( - u"mark", universe.categories[u"internal"][u"counters"].getint( - u"mark" - ) - 1 - ) - - # periodically save everything - if not universe.categories[u"internal"][u"counters"].getint(u"save"): - universe.save() - universe.categories[u"internal"][u"counters"].set( - u"save", universe.categories[u"internal"][u"time"].getint( - u"frequency_save" - ) - ) - else: - universe.categories[u"internal"][u"counters"].set( - u"save", universe.categories[u"internal"][u"counters"].getint( - u"save" - ) - 1 - ) - - # pause for a configurable amount of time (decimal seconds) - time.sleep(universe.categories[u"internal"][u"time"].getfloat(u"increment")) - - # increase the elapsed increment counter - universe.categories[u"internal"][u"counters"].set( - u"elapsed", universe.categories[u"internal"][u"counters"].getint( - u"elapsed" - ) + 1 - ) - -def reload_data(): - u"""Reload all relevant objects.""" - for user in universe.userlist[:]: user.reload() - for element in universe.contents.values(): - if element.origin.is_writeable(): element.reload() - universe.load() - -def check_for_connection(listening_socket): - u"""Check for a waiting connection and return a new user object.""" - - # try to accept a new connection - try: - connection, address = listening_socket.accept() - except: - return None - - # note that we got one - log(u"Connection from " + address[0], 2) - - # disable blocking so we can proceed whether or not we can send/receive - connection.setblocking(0) - - # create a new user object - user = User() - - # associate this connection with it - user.connection = connection - - # set the user's ipa from the connection's ipa - user.address = address[0] - - # let the client know we WILL EOR (RFC 885) - user.send(telnet_proto([u"IAC",u"WILL",u"TELOPT_EOR"]), raw=True) - user.negotiation_pause = 2 - - # return the new user object - return user - -def get_menu(state, error=None, choices=None): - u"""Show the correct menu text to a user.""" - - # make sure we don't reuse a mutable sequence by default - if choices is None: choices = {} - - # get the description or error text - message = get_menu_description(state, error) - - # get menu choices for the current state - message += get_formatted_menu_choices(state, choices) - - # try to get a prompt, if it was defined - message += get_menu_prompt(state) - - # throw in the default choice, if it exists - message += get_formatted_default_menu_choice(state) - - # display a message indicating if echo is off - message += get_echo_message(state) - - # return the assembly of various strings defined above - return message - -def menu_echo_on(state): - u"""True if echo is on, false if it is off.""" - return universe.categories[u"menu"][state].getboolean(u"echo", True) - -def get_echo_sequence(state, echoing): - u"""Build the appropriate IAC WILL/WONT ECHO sequence as needed.""" - - # if the user has echo on and the menu specifies it should be turned - # off, send: iac + will + echo + null - if echoing and not menu_echo_on(state): - return telnet_proto([u"IAC",u"WILL",u"TELOPT_ECHO"]) - - # if echo is not set to off in the menu and the user curently has echo - # off, send: iac + wont + echo + null - elif not echoing and menu_echo_on(state): - return telnet_proto([u"IAC",u"WONT",u"TELOPT_ECHO"]) - - # default is not to send an echo control sequence at all - else: return "" - -def get_echo_message(state): - u"""Return a message indicating that echo is off.""" - if menu_echo_on(state): return u"" - else: return u"(won't echo) " - -def get_default_menu_choice(state): - u"""Return the default choice for a menu.""" - return universe.categories[u"menu"][state].get(u"default") - -def get_formatted_default_menu_choice(state): - u"""Default menu choice foratted for inclusion in a prompt string.""" - default_choice = get_default_menu_choice(state) - if default_choice: return u"[$(red)" + default_choice + u"$(nrm)] " - else: return u"" - -def get_menu_description(state, error): - u"""Get the description or error text.""" - - # an error condition was raised by the handler - if error: - - # try to get an error message matching the condition - # and current state - description = universe.categories[u"menu"][state].get(u"error_" + error) - if not description: description = u"That is not a valid choice..." - description = u"$(red)" + description + u"$(nrm)" - - # there was no error condition - else: - - # try to get a menu description for the current state - description = universe.categories[u"menu"][state].get(u"description") - - # return the description or error message - if description: description += u"$(eol)$(eol)" - return description - -def get_menu_prompt(state): - u"""Try to get a prompt, if it was defined.""" - prompt = universe.categories[u"menu"][state].get(u"prompt") - if prompt: prompt += u" " - return prompt - -def get_menu_choices(user): - u"""Return a dict of choice:meaning.""" - menu = universe.categories[u"menu"][user.state] - create_choices = menu.get(u"create") - if create_choices: choices = eval(create_choices) - else: choices = {} - ignores = [] - options = {} - creates = {} - for facet in menu.facets(): - if facet.startswith(u"demand_") and not eval( - universe.categories[u"menu"][user.state].get(facet) - ): - ignores.append(facet.split(u"_", 2)[1]) - elif facet.startswith(u"create_"): - creates[facet] = facet.split(u"_", 2)[1] - elif facet.startswith(u"choice_"): - options[facet] = facet.split(u"_", 2)[1] - for facet in creates.keys(): - if not creates[facet] in ignores: - choices[creates[facet]] = eval(menu.get(facet)) - for facet in options.keys(): - if not options[facet] in ignores: - choices[options[facet]] = menu.get(facet) - return choices - -def get_formatted_menu_choices(state, choices): - u"""Returns a formatted string of menu choices.""" - choice_output = u"" - choice_keys = choices.keys() - choice_keys.sort() - for choice in choice_keys: - choice_output += u" [$(red)" + choice + u"$(nrm)] " + choices[ - choice - ] + u"$(eol)" - if choice_output: choice_output += u"$(eol)" - return choice_output - -def get_menu_branches(state): - u"""Return a dict of choice:branch.""" - branches = {} - for facet in universe.categories[u"menu"][state].facets(): - if facet.startswith(u"branch_"): - branches[ - facet.split(u"_", 2)[1] - ] = universe.categories[u"menu"][state].get(facet) - return branches - -def get_default_branch(state): - u"""Return the default branch.""" - return universe.categories[u"menu"][state].get(u"branch") - -def get_choice_branch(user, choice): - u"""Returns the new state matching the given choice.""" - branches = get_menu_branches(user.state) - if choice in branches.keys(): return branches[choice] - elif choice in user.menu_choices.keys(): - return get_default_branch(user.state) - else: return u"" - -def get_menu_actions(state): - u"""Return a dict of choice:branch.""" - actions = {} - for facet in universe.categories[u"menu"][state].facets(): - if facet.startswith(u"action_"): - actions[ - facet.split(u"_", 2)[1] - ] = universe.categories[u"menu"][state].get(facet) - return actions - -def get_default_action(state): - u"""Return the default action.""" - return universe.categories[u"menu"][state].get(u"action") - -def get_choice_action(user, choice): - u"""Run any indicated script for the given choice.""" - actions = get_menu_actions(user.state) - if choice in actions.keys(): return actions[choice] - elif choice in user.menu_choices.keys(): - return get_default_action(user.state) - else: return u"" - -def handle_user_input(user): - u"""The main handler, branches to a state-specific handler.""" - - # if the user's client echo is off, send a blank line for aesthetics - if user.echoing: user.received_newline = True - - # check to make sure the state is expected, then call that handler - if u"handler_" + user.state in globals(): - exec(u"handler_" + user.state + u"(user)") - else: - generic_menu_handler(user) - - # since we got input, flag that the menu/prompt needs to be redisplayed - user.menu_seen = False - - # update the last_input timestamp while we're at it - user.last_input = universe.get_time() - -def generic_menu_handler(user): - u"""A generic menu choice handler.""" - - # get a lower-case representation of the next line of input - if user.input_queue: - choice = user.input_queue.pop(0) - if choice: choice = choice.lower() - else: choice = u"" - if not choice: choice = get_default_menu_choice(user.state) - if choice in user.menu_choices: - exec(get_choice_action(user, choice)) - new_state = get_choice_branch(user, choice) - if new_state: user.state = new_state - else: user.error = u"default" - -def handler_entering_account_name(user): - u"""Handle the login account name.""" - - # get the next waiting line of input - input_data = user.input_queue.pop(0) - - # did the user enter anything? - if input_data: - - # keep only the first word and convert to lower-case - name = input_data.lower() - - # fail if there are non-alphanumeric characters - if name != filter( - lambda x: x>=u"0" and x<=u"9" or x>=u"a" and x<=u"z", name - ): - user.error = u"bad_name" - - # if that account exists, time to request a password - elif name in universe.categories[u"account"]: - user.account = universe.categories[u"account"][name] - user.state = u"checking_password" - - # otherwise, this could be a brand new user - else: - user.account = Element(u"account:" + name, universe) - user.account.set(u"name", name) - log(u"New user: " + name, 2) - user.state = u"checking_new_account_name" - - # if the user entered nothing for a name, then buhbye - else: - user.state = u"disconnecting" - -def handler_checking_password(user): - u"""Handle the login account password.""" - import md5 - - # get the next waiting line of input - input_data = user.input_queue.pop(0) - - # does the hashed input equal the stored hash? - if unicode( - md5.new( - ( user.account.get(u"name") + input_data ).encode(u"utf-8") - ).hexdigest() - ) == user.account.get(u"passhash"): - - # if so, set the username and load from cold storage - if not user.replace_old_connections(): - user.authenticate() - user.state = u"main_utility" - - # if at first your hashes don't match, try, try again - elif user.password_tries < universe.categories[ - u"internal" - ][ - u"limits" - ].getint( - u"password_tries" - ) - 1: - user.password_tries += 1 - user.error = u"incorrect" - - # we've exceeded the maximum number of password failures, so disconnect - else: - user.send( - u"$(eol)$(red)Too many failed password attempts...$(nrm)$(eol)" - ) - user.state = u"disconnecting" - -def handler_entering_new_password(user): - u"""Handle a new password entry.""" - import md5 - - # get the next waiting line of input - input_data = user.input_queue.pop(0) - - # make sure the password is strong--at least one upper, one lower and - # one digit, seven or more characters in length - if len(input_data) > 6 and len( - filter( lambda x: x>=u"0" and x<=u"9", input_data ) - ) and len( - filter( lambda x: x>=u"A" and x<=u"Z", input_data ) - ) and len( - filter( lambda x: x>=u"a" and x<=u"z", input_data ) - ): - - # hash and store it, then move on to verification - user.account.set( - u"passhash", - unicode( - md5.new( - ( user.account.get(u"name") + input_data ).encode(u"utf-8") - ).hexdigest() - ) - ) - user.state = u"verifying_new_password" - - # the password was weak, try again if you haven't tried too many times - elif user.password_tries < universe.categories[ - u"internal" - ][ - u"limits" - ].getint( - u"password_tries" - ) - 1: - user.password_tries += 1 - user.error = u"weak" - - # too many tries, so adios - else: - user.send( - u"$(eol)$(red)Too many failed password attempts...$(nrm)$(eol)" - ) - user.account.destroy() - user.state = u"disconnecting" - -def handler_verifying_new_password(user): - u"""Handle the re-entered new password for verification.""" - import md5 - - # get the next waiting line of input - input_data = user.input_queue.pop(0) - - # hash the input and match it to storage - if unicode( - md5.new( - ( user.account.get(u"name") + input_data ).encode(u"utf-8") - ).hexdigest() - ) == user.account.get(u"passhash"): - user.authenticate() - - # the hashes matched, so go active - if not user.replace_old_connections(): user.state = u"main_utility" - - # go back to entering the new password as long as you haven't tried - # too many times - elif user.password_tries < universe.categories[ - u"internal" - ][ - u"limits" - ].getint( - u"password_tries" - ) - 1: - user.password_tries += 1 - user.error = u"differs" - user.state = u"entering_new_password" - - # otherwise, sayonara - else: - user.send( - u"$(eol)$(red)Too many failed password attempts...$(nrm)$(eol)" - ) - user.account.destroy() - user.state = u"disconnecting" - -def handler_active(user): - u"""Handle input for active users.""" - - # get the next waiting line of input - input_data = user.input_queue.pop(0) - - # is there input? - if input_data: - - # split out the command and parameters - actor = user.avatar - mode = actor.get(u"mode") - if mode and input_data.startswith(u"!"): - command_name, parameters = first_word(input_data[1:]) - elif mode == u"chat": - command_name = u"say" - parameters = input_data - else: - command_name, parameters = first_word(input_data) - - # lowercase the command - command_name = command_name.lower() - - # the command matches a command word for which we have data - if command_name in universe.categories[u"command"]: - command = universe.categories[u"command"][command_name] - else: command = None - - # if it's allowed, do it - if actor.can_run(command): exec(command.get(u"action")) - - # otherwise, give an error - elif command_name: command_error(actor, input_data) - - # if no input, just idle back with a prompt - else: user.send(u"", just_prompt=True) - -def command_halt(actor, parameters): - u"""Halt the world.""" - if actor.owner: - - # see if there's a message or use a generic one - if parameters: message = u"Halting: " + parameters - else: - message = u"User " + actor.owner.account.get( - u"name" - ) + u" halted the world." - - # let everyone know - broadcast(message, add_prompt=False) - log(message, 8) - - # set a flag to terminate the world - universe.terminate_flag = True - -def command_reload(actor): - u"""Reload all code modules, configs and data.""" - if actor.owner: - - # let the user know and log - actor.send(u"Reloading all code modules, configs and data.") - log( - u"User " + actor.owner.account.get(u"name") + u" reloaded the world.", - 8 - ) - - # set a flag to reload - universe.reload_flag = True - -def command_quit(actor): - u"""Leave the world and go back to the main menu.""" - if actor.owner: - actor.owner.state = u"main_utility" - actor.owner.deactivate_avatar() - -def command_help(actor, parameters): - u"""List available commands and provide help for commands.""" - - # did the user ask for help on a specific command word? - if parameters and actor.owner: - - # is the command word one for which we have data? - if parameters in universe.categories[u"command"]: - command = universe.categories[u"command"][parameters] - else: command = None - - # only for allowed commands - if actor.can_run(command): - - # add a description if provided - description = command.get(u"description") - if not description: - description = u"(no short description provided)" - if command.getboolean(u"administrative"): output = u"$(red)" - else: output = u"$(grn)" - output += parameters + u"$(nrm) - " + description + u"$(eol)$(eol)" - - # add the help text if provided - help_text = command.get(u"help") - if not help_text: - help_text = u"No help is provided for this command." - output += help_text - - # list related commands - see_also = command.getlist(u"see_also") - if see_also: - really_see_also = u"" - for item in see_also: - if item in universe.categories[u"command"]: - command = universe.categories[u"command"][item] - if actor.can_run(command): - if really_see_also: - really_see_also += u", " - if command.getboolean(u"administrative"): - really_see_also += u"$(red)" - else: - really_see_also += u"$(grn)" - really_see_also += item + u"$(nrm)" - if really_see_also: - output += u"$(eol)$(eol)See also: " + really_see_also - - # no data for the requested command word - else: - output = u"That is not an available command." - - # no specific command word was indicated - else: - - # give a sorted list of commands with descriptions if provided - output = u"These are the commands available to you:$(eol)$(eol)" - sorted_commands = universe.categories[u"command"].keys() - sorted_commands.sort() - for item in sorted_commands: - command = universe.categories[u"command"][item] - if actor.can_run(command): - description = command.get(u"description") - if not description: - description = u"(no short description provided)" - if command.getboolean(u"administrative"): output += u" $(red)" - else: output += u" $(grn)" - output += item + u"$(nrm) - " + description + u"$(eol)" - output += u"$(eol)Enter \"help COMMAND\" for help on a command " \ - + u"named \"COMMAND\"." - - # send the accumulated output to the user - actor.send(output) - -def command_move(actor, parameters): - u"""Move the avatar in a given direction.""" - if parameters in universe.contents[actor.get(u"location")].portals(): - actor.move_direction(parameters) - else: actor.send(u"You cannot go that way.") - -def command_look(actor, parameters): - u"""Look around.""" - if parameters: actor.send(u"You can't look at or in anything yet.") - else: actor.look_at(actor.get(u"location")) - -def command_say(actor, parameters): - u"""Speak to others in the same room.""" - import unicodedata - - # check for replacement macros and escape them - parameters = escape_macros(parameters) - - # if the message is wrapped in quotes, remove them and leave contents intact - if parameters.startswith(u"\"") and parameters.endswith(u"\""): - message = parameters[1:-1] - literal = True - - # otherwise, get rid of stray quote marks on the ends of the message - else: - message = parameters.strip(u"\"'`") - literal = False - - # the user entered a message - if message: - - # match the punctuation used, if any, to an action - actions = universe.categories[u"internal"][u"language"].getdict( - u"actions" - ) - default_punctuation = universe.categories[u"internal"][u"language"].get( - u"default_punctuation" - ) - action = u"" - for mark in actions.keys(): - if not literal and message.endswith(mark): - action = actions[mark] - break - - # add punctuation if needed - if not action: - action = actions[default_punctuation] - if message and not ( - literal or unicodedata.category(message[-1]) == u"Po" - ): - message += default_punctuation - - # failsafe checks to avoid unwanted reformatting and null strings - if message and not literal: - - # decapitalize the first letter to improve matching - message = message[0].lower() + message[1:] - - # iterate over all words in message, replacing typos - typos = universe.categories[u"internal"][u"language"].getdict( - u"typos" - ) - words = message.split() - for index in range(len(words)): - word = words[index] - while unicodedata.category(word[0]) == u"Po": - word = word[1:] - while unicodedata.category(word[-1]) == u"Po": - word = word[:-1] - if word in typos.keys(): - words[index] = words[index].replace(word, typos[word]) - message = u" ".join(words) - - # capitalize the first letter - message = message[0].upper() + message[1:] - - # tell the room - if message: - actor.echo_to_location( - actor.get(u"name") + u" " + action + u"s, \"" + message + u"\"" - ) - actor.send(u"You " + action + u", \"" + message + u"\"") - - # there was no message - else: - actor.send(u"What do you want to say?") - -def command_chat(actor): - u"""Toggle chat mode.""" - mode = actor.get(u"mode") - if not mode: - actor.set(u"mode", u"chat") - actor.send(u"Entering chat mode (use $(grn)!chat$(nrm) to exit).") - elif mode == u"chat": - actor.remove_facet(u"mode") - actor.send(u"Exiting chat mode.") - else: actor.send(u"Sorry, but you're already busy with something else!") - -def command_show(actor, parameters): - u"""Show program data.""" - import re - message = u"" - arguments = parameters.split() - if not parameters: message = u"What do you want to show?" - elif arguments[0] == u"time": - message = universe.categories[u"internal"][u"counters"].get( - u"elapsed" - ) + u" increments elapsed since the world was created." - elif arguments[0] == u"categories": - message = u"These are the element categories:$(eol)" - categories = universe.categories.keys() - categories.sort() - for category in categories: - message += u"$(eol) $(grn)" + category + u"$(nrm)" - elif arguments[0] == u"files": - message = u"These are the current files containing the universe:$(eol)" - filenames = universe.files.keys() - filenames.sort() - for filename in filenames: - if universe.files[filename].is_writeable(): status = u"rw" - else: status = u"ro" - message += u"$(eol) $(red)(" + status + u") $(grn)" + filename \ - + u"$(nrm)" - elif arguments[0] == u"category": - if len(arguments) != 2: message = u"You must specify one category." - elif arguments[1] in universe.categories: - message = u"These are the elements in the \"" + arguments[1] \ - + u"\" category:$(eol)" - elements = [ - ( - universe.categories[arguments[1]][x].key - ) for x in universe.categories[arguments[1]].keys() - ] - elements.sort() - for element in elements: - message += u"$(eol) $(grn)" + element + u"$(nrm)" - else: message = u"Category \"" + arguments[1] + u"\" does not exist." - elif arguments[0] == u"file": - if len(arguments) != 2: message = u"You must specify one file." - elif arguments[1] in universe.files: - message = u"These are the elements in the \"" + arguments[1] \ - + u"\" file:$(eol)" - elements = universe.files[arguments[1]].data.sections() - elements.sort() - for element in elements: - message += u"$(eol) $(grn)" + element + u"$(nrm)" - else: message = u"Category \"" + arguments[1] + u"\" does not exist." - elif arguments[0] == u"element": - if len(arguments) != 2: message = u"You must specify one element." - elif arguments[1] in universe.contents: - element = universe.contents[arguments[1]] - message = u"These are the properties of the \"" + arguments[1] \ - + u"\" element (in \"" + element.origin.filename + u"\"):$(eol)" - facets = element.facets() - facets.sort() - for facet in facets: - message += u"$(eol) $(grn)" + facet + u": $(red)" \ - + escape_macros(element.get(facet)) + u"$(nrm)" - else: message = u"Element \"" + arguments[1] + u"\" does not exist." - elif arguments[0] == u"result": - if len(arguments) < 2: message = u"You need to specify an expression." - else: - try: - message = repr(eval(u" ".join(arguments[1:]))) - except: - message = u"Your expression raised an exception!" - elif arguments[0] == u"log": - if len(arguments) == 4: - if re.match(u"^\d+$", arguments[3]) and int(arguments[3]) >= 0: - stop = int(arguments[3]) - else: stop = -1 - else: stop = 0 - if len(arguments) >= 3: - if re.match(u"^\d+$", arguments[2]) and int(arguments[2]) > 0: - start = int(arguments[2]) - else: start = -1 - else: start = 10 - if len(arguments) >= 2: - if re.match(u"^\d+$", arguments[1]) and 0 <= int(arguments[1]) <= 9: - level = int(arguments[1]) - else: level = -1 - elif 0 <= actor.owner.account.getint(u"loglevel") <= 9: - level = actor.owner.account.getint(u"loglevel") - else: level = 1 - if level > -1 and start > -1 and stop > -1: - message = get_loglines(level, start, stop) - else: - message = u"When specified, level must be 0-9 (default 1), " \ - + u"start and stop must be >=1 (default 10 and 1)." - else: message = u"I don't know what \"" + parameters + u"\" is." - actor.send(message) - -def command_create(actor, parameters): - u"""Create an element if it does not exist.""" - if not parameters: - message = u"You must at least specify an element to create." - elif not actor.owner: message = u"" - else: - arguments = parameters.split() - if len(arguments) == 1: arguments.append(u"") - if len(arguments) == 2: - element, filename = arguments - if element in universe.contents: - message = u"The \"" + element + u"\" element already exists." - else: - message = u"You create \"" + element + u"\" within the universe." - logline = actor.owner.account.get( - u"name" - ) + u" created an element: " + element - if filename: - logline += u" in file " + filename - if filename not in universe.files: - message += u" Warning: \"" + filename \ - + u"\" is not yet included in any other file and will " \ - + u"not be read on startup unless this is remedied." - Element(element, universe, filename) - log(logline, 6) - elif len(arguments) > 2: - message = u"You can only specify an element and a filename." - actor.send(message) - -def command_destroy(actor, parameters): - u"""Destroy an element if it exists.""" - if actor.owner: - if not parameters: message = u"You must specify an element to destroy." - else: - if parameters not in universe.contents: - message = u"The \"" + parameters + u"\" element does not exist." - else: - universe.contents[parameters].destroy() - message = u"You destroy \"" + parameters \ - + u"\" within the universe." - log( - actor.owner.account.get( - u"name" - ) + u" destroyed an element: " + parameters, - 6 - ) - actor.send(message) - -def command_set(actor, parameters): - u"""Set a facet of an element.""" - if not parameters: - message = u"You must specify an element, a facet and a value." - else: - arguments = parameters.split(u" ", 2) - if len(arguments) == 1: - message = u"What facet of element \"" + arguments[0] \ - + u"\" would you like to set?" - elif len(arguments) == 2: - message = u"What value would you like to set for the \"" \ - + arguments[1] + u"\" facet of the \"" + arguments[0] \ - + u"\" element?" - else: - element, facet, value = arguments - if element not in universe.contents: - message = u"The \"" + element + u"\" element does not exist." - else: - universe.contents[element].set(facet, value) - message = u"You have successfully (re)set the \"" + facet \ - + u"\" facet of element \"" + element \ - + u"\". Try \"show element " + element + u"\" for verification." - actor.send(message) - -def command_delete(actor, parameters): - u"""Delete a facet from an element.""" - if not parameters: message = u"You must specify an element and a facet." - else: - arguments = parameters.split(u" ") - if len(arguments) == 1: - message = u"What facet of element \"" + arguments[0] \ - + u"\" would you like to delete?" - elif len(arguments) != 2: - message = u"You may only specify an element and a facet." - else: - element, facet = arguments - if element not in universe.contents: - message = u"The \"" + element + u"\" element does not exist." - elif facet not in universe.contents[element].facets(): - message = u"The \"" + element + u"\" element has no \"" + facet \ - + u"\" facet." - else: - universe.contents[element].remove_facet(facet) - message = u"You have successfully deleted the \"" + facet \ - + u"\" facet of element \"" + element \ - + u"\". Try \"show element " + element + u"\" for verification." - actor.send(message) - -def command_error(actor, input_data): - u"""Generic error for an unrecognized command word.""" - import random - - # 90% of the time use a generic error - if random.randrange(10): - message = u"I'm not sure what \"" + input_data + u"\" means..." - - # 10% of the time use the classic diku error - else: - message = u"Arglebargle, glop-glyf!?!" - - # send the error message - actor.send(message) - -def find_file( - file_name=None, - root_path=None, - search_path=None, - default_dir=None, - relative=None, - universe=None -): - u"""Return an absolute file path based on configuration.""" - import os, os.path, sys - - # make sure to get rid of any surrounding quotes first thing - if file_name: file_name = file_name.strip(u"\"'") - - # this is all unnecessary if it's already absolute - if file_name and os.path.isabs(file_name): - return os.path.realpath(file_name) - - # when no file name is specified, look for .conf - elif not file_name: file_name = os.path.basename( sys.argv[0] ) + u".conf" - - # if a universe was provided, try to get some defaults from there - if universe: - - if hasattr( - universe, - u"contents" - ) and u"internal:storage" in universe.contents: - storage = universe.categories[u"internal"][u"storage"] - if not root_path: root_path = storage.get(u"root_path").strip("\"'") - if not search_path: search_path = storage.getlist(u"search_path") - if not default_dir: default_dir = storage.get(u"default_dir").strip("\"'") - - # if there's only one file loaded, try to work around a chicken 1: conffile = sys.argv[1] - else: conffile = u"" - - # the big bang - global universe - universe = Universe(conffile, True) - - # log an initial message - log(u"Started mudpy with command line: " + u" ".join(sys.argv)) - - # fork and disassociate - daemonize(universe) - - # override the default exception handler so we get logging first thing - override_excepthook() - - # set up custom signal handlers - assign_sighook() - - # make the pidfile - create_pidfile(universe) - - # pass the initialized universe back - return universe - -def finish(): - """This contains functions to be performed when shutting down the engine.""" - - # the loop has terminated, so save persistent data - universe.save() - - # log a final message - log(u"Shutting down now.") - - # get rid of the pidfile - remove_pidfile(universe)