1 """Miscellaneous functions for the mudpy engine."""
3 # Copyright (c) 2004-2016 Jeremy Stanley <fungi@yuggoth.org>. Permission
4 # to use, copy, modify, and distribute this software is granted under
5 # terms provided in the LICENSE file distributed with this software.
24 """An element of the universe."""
26 def __init__(self, key, universe, filename=None, old_style=False):
27 """Set up a new element."""
29 # TODO(fungi): This can be removed after the transition is complete
30 self.old_style = old_style
32 # keep track of our key name
35 # keep track of what universe it's loading into
36 self.universe = universe
38 # clone attributes if this is replacing another element
39 if self.old_style and self.key in self.universe.contents:
40 old_element = self.universe.contents[self.key]
41 for attribute in vars(old_element).keys():
42 exec("self." + attribute + " = old_element." + attribute)
44 self.owner.avatar = self
46 # i guess this is a new element then
49 # set of facet keys from the universe
50 self.facethash = dict()
52 # not owned by a user by default (used for avatars)
55 # no contents in here by default
58 # parse out appropriate category and subkey names, add to list
59 if self.key.find(":") > 0:
60 self.category, self.subkey = self.key.split(":", 1)
62 self.category = "other"
63 self.subkey = self.key
64 if self.category not in self.universe.categories:
65 self.category = "other"
66 self.subkey = self.key
68 # get an appropriate filename for the origin
70 filename = self.universe.default_origins[self.category]
71 if not os.path.isabs(filename):
72 filename = os.path.abspath(filename)
74 # add the file if it doesn't exist yet
75 if filename not in self.universe.files:
76 mudpy.data.DataFile(filename, self.universe)
78 # record or reset a pointer to the origin file
79 self.origin = self.universe.files[filename]
81 # add a data section to the origin if necessary
82 if self.key not in self.origin.data:
83 self.origin.data[self.key] = {}
85 # add or replace this element in the universe
86 self.universe.contents[self.key] = self
87 self.universe.categories[self.category][self.subkey] = self
90 """Create a new element and replace this one."""
91 Element(self.key, self.universe, self.origin.filename,
92 old_style=self.old_style)
96 """Remove an element from the universe and destroy it."""
97 del(self.origin.data[self.key])
98 del self.universe.categories[self.category][self.subkey]
99 del self.universe.contents[self.key]
103 """Return a list of non-inherited facets for this element."""
106 return self.origin.data[self.key].keys()
107 except (AttributeError, KeyError):
110 return self.facethash
112 def has_facet(self, facet):
113 """Return whether the non-inherited facet exists."""
114 return facet in self.facets()
116 def remove_facet(self, facet):
117 """Remove a facet from the element."""
118 if self.has_facet(facet):
119 del(self.origin.data[self.key][facet])
120 self.origin.modified = True
123 """Return a list of the element's inheritance lineage."""
124 if self.has_facet("inherit"):
125 ancestry = self.get("inherit")
128 for parent in ancestry[:]:
129 ancestors = self.universe.contents[parent].ancestry()
130 for ancestor in ancestors:
131 if ancestor not in ancestry:
132 ancestry.append(ancestor)
137 def get(self, facet, default=None):
138 """Retrieve values."""
143 return self.origin.data[self.key][facet]
145 return self.origin.data[".".join((self.key, facet))]
146 except (KeyError, TypeError):
148 if self.has_facet("inherit"):
149 for ancestor in self.ancestry():
150 if self.universe.contents[ancestor].has_facet(facet):
151 return self.universe.contents[ancestor].get(facet)
155 def set(self, facet, value):
157 if facet in ["loglevel"]:
159 if not self.has_facet(facet) or not self.get(facet) == value:
161 if self.key not in self.origin.data:
162 self.origin.data[self.key] = {}
163 self.origin.data[self.key][facet] = value
165 node = ".".join((self.key, facet))
166 self.origin.data[node] = value
167 self.facethash[facet] = self.origin.data[node]
168 self.origin.modified = True
170 def append(self, facet, value):
171 """Append value to a list."""
172 newlist = self.get(facet)
175 if type(newlist) is not list:
176 newlist = list(newlist)
177 newlist.append(value)
178 self.set(facet, newlist)
188 add_terminator=False,
191 """Convenience method to pass messages to an owner."""
204 def can_run(self, command):
205 """Check if the user can run this command object."""
207 # has to be in the commands category
208 if command not in self.universe.categories["command"].values():
211 # avatars of administrators can run any command
212 elif self.owner and self.owner.account.get("administrator"):
215 # everyone can run non-administrative commands
216 elif not command.get("administrative"):
219 # otherwise the command cannot be run by this actor
223 # pass back the result
226 def update_location(self):
227 """Make sure the location's contents contain this element."""
228 area = self.get("location")
229 if area in self.universe.contents:
230 self.universe.contents[area].contents[self.key] = self
232 def clean_contents(self):
233 """Make sure the element's contents aren't bogus."""
234 for element in self.contents.values():
235 if element.get("location") != self.key:
236 del self.contents[element.key]
238 def go_to(self, area):
239 """Relocate the element to a specific area."""
240 current = self.get("location")
241 if current and self.key in self.universe.contents[current].contents:
242 del universe.contents[current].contents[self.key]
243 if area in self.universe.contents:
244 self.set("location", area)
245 self.universe.contents[area].contents[self.key] = self
249 """Relocate the element to its default location."""
250 self.go_to(self.get("default_location"))
251 self.echo_to_location(
252 "You suddenly realize that " + self.get("name") + " is here."
255 def move_direction(self, direction):
256 """Relocate the element in a specified direction."""
257 motion = self.universe.contents["mudpy.movement.%s" % direction]
258 enter_term = motion.get("enter_term")
259 exit_term = motion.get("exit_term")
260 self.echo_to_location("%s exits %s." % (self.get("name"), exit_term))
261 self.send("You exit %s." % exit_term, add_prompt=False)
263 self.universe.contents[
264 self.get("location")].link_neighbor(direction)
266 self.echo_to_location("%s arrives from %s." % (
267 self.get("name"), enter_term))
269 def look_at(self, key):
270 """Show an element to another element."""
272 element = self.universe.contents[key]
274 name = element.get("name")
276 message += "$(cyn)" + name + "$(nrm)$(eol)"
277 description = element.get("description")
279 message += description + "$(eol)"
280 portal_list = list(element.portals().keys())
283 message += "$(cyn)[ Exits: " + ", ".join(
286 for element in self.universe.contents[
289 if element.get("is_actor") and element is not self:
290 message += "$(yel)" + element.get(
292 ) + " is here.$(nrm)$(eol)"
293 elif element is not self:
294 message += "$(grn)" + element.get(
300 """Map the portal directions for an area to neighbors."""
302 if re.match(r"""^area:-?\d+,-?\d+,-?\d+$""", self.key):
303 coordinates = [(int(x))
304 for x in self.key.split(":")[1].split(",")]
307 self.universe.contents["mudpy.movement.%s" % x].get("vector")
308 ) for x in self.universe.directions)
309 for portal in self.get("gridlinks"):
310 adjacent = map(lambda c, o: c + o,
311 coordinates, offsets[portal])
312 neighbor = "area:" + ",".join(
313 [(str(x)) for x in adjacent]
315 if neighbor in self.universe.contents:
316 portals[portal] = neighbor
317 for facet in self.facets():
318 if facet.startswith("link_"):
319 neighbor = self.get(facet)
320 if neighbor in self.universe.contents:
321 portal = facet.split("_")[1]
322 portals[portal] = neighbor
325 def link_neighbor(self, direction):
326 """Return the element linked in a given direction."""
327 portals = self.portals()
328 if direction in portals:
329 return portals[direction]
331 def echo_to_location(self, message):
332 """Show a message to other elements in the current location."""
333 for element in self.universe.contents[
336 if element is not self:
337 element.send(message)
344 def __init__(self, filename="", load=False):
345 """Initialize the universe."""
348 self.default_origins = {}
349 self.directions = set()
351 self.private_files = []
352 self.reload_flag = False
353 self.setup_loglines = []
354 self.startdir = os.getcwd()
355 self.terminate_flag = False
358 possible_filenames = [
360 "/usr/local/mudpy/etc/mudpy.yaml",
361 "/usr/local/etc/mudpy.yaml",
362 "/etc/mudpy/mudpy.yaml",
365 for filename in possible_filenames:
366 if os.access(filename, os.R_OK):
368 if not os.path.isabs(filename):
369 filename = os.path.join(self.startdir, filename)
370 self.filename = filename
372 # make sure to preserve any accumulated log entries during load
373 self.setup_loglines += self.load()
376 """Load universe data from persistent storage."""
378 # it's possible for this to enter before logging configuration is read
379 pending_loglines = []
381 # the files dict must exist and filename needs to be read-only
385 self.filename in self.files and self.files[
390 # clear out all read-only files
391 if hasattr(self, "files"):
392 for data_filename in list(self.files.keys()):
393 if not self.files[data_filename].is_writeable():
394 del self.files[data_filename]
396 # start loading from the initial file
397 mudpy.data.DataFile(self.filename, self)
399 # make a list of inactive avatars
400 inactive_avatars = []
401 for account in self.categories["account"].values():
402 for avatar in account.get("avatars"):
404 inactive_avatars.append(self.contents[avatar])
406 pending_loglines.append((
407 'Missing avatar "%s", possible data corruption' %
409 for user in self.userlist:
410 if user.avatar in inactive_avatars:
411 inactive_avatars.remove(user.avatar)
413 # go through all elements to clear out inactive avatar locations
414 for element in self.contents.values():
415 area = element.get("location")
416 if element in inactive_avatars and area:
417 if area in self.contents and element.key in self.contents[
420 del self.contents[area].contents[element.key]
421 element.set("default_location", area)
422 element.remove_facet("location")
424 # another pass to straighten out all the element contents
425 for element in self.contents.values():
426 element.update_location()
427 element.clean_contents()
428 return pending_loglines
431 """Create a new, empty Universe (the Big Bang)."""
432 new_universe = Universe()
433 for attribute in vars(self).keys():
434 exec("new_universe." + attribute + " = self." + attribute)
435 new_universe.reload_flag = False
440 """Save the universe to persistent storage."""
441 for key in self.files:
442 self.files[key].save()
444 def initialize_server_socket(self):
445 """Create and open the listening socket."""
447 # need to know the local address and port number for the listener
448 host = self.contents["mudpy.network"].get("host")
449 port = self.contents["mudpy.network"].get("port")
451 # if no host was specified, bind to all local addresses (preferring
459 # figure out if this is ipv4 or v6
460 family = socket.getaddrinfo(host, port)[0][0]
461 if family is socket.AF_INET6 and not socket.has_ipv6:
462 log("No support for IPv6 address %s (use IPv4 instead)." % host)
464 # create a new stream-type socket object
465 self.listening_socket = socket.socket(family, socket.SOCK_STREAM)
467 # set the socket options to allow existing open ones to be
468 # reused (fixes a bug where the server can't bind for a minute
469 # when restarting on linux systems)
470 self.listening_socket.setsockopt(
471 socket.SOL_SOCKET, socket.SO_REUSEADDR, 1
474 # bind the socket to to our desired server ipa and port
475 self.listening_socket.bind((host, port))
477 # disable blocking so we can proceed whether or not we can
479 self.listening_socket.setblocking(0)
481 # start listening on the socket
482 self.listening_socket.listen(1)
484 # note that we're now ready for user connections
486 "Listening for Telnet connections on: " +
487 host + ":" + str(port)
491 """Convenience method to get the elapsed time counter."""
492 return self.categories["internal"]["counters"].get("elapsed")
497 """This is a connected user."""
500 """Default values for the in-memory user variables."""
503 self.authenticated = False
506 self.connection = None
508 self.input_queue = []
509 self.last_address = ""
510 self.last_input = universe.get_time()
511 self.menu_choices = {}
512 self.menu_seen = False
513 self.negotiation_pause = 0
514 self.output_queue = []
515 self.partial_input = b""
516 self.password_tries = 0
517 self.state = "initial"
521 """Log, close the connection and remove."""
523 name = self.account.get("name")
527 message = "User " + name
529 message = "An unnamed user"
530 message += " logged out."
532 self.deactivate_avatar()
533 self.connection.close()
536 def check_idle(self):
537 """Warn or disconnect idle users as appropriate."""
538 idletime = universe.get_time() - self.last_input
539 linkdead_dict = universe.contents[
540 "mudpy.timing.idle.disconnect"].facets()
541 if self.state in linkdead_dict:
542 linkdead_state = self.state
544 linkdead_state = "default"
545 if idletime > linkdead_dict[linkdead_state]:
547 "$(eol)$(red)You've done nothing for far too long... goodbye!"
552 logline = "Disconnecting "
553 if self.account and self.account.get("name"):
554 logline += self.account.get("name")
556 logline += "an unknown user"
557 logline += (" after idling too long in the " + self.state
560 self.state = "disconnecting"
561 self.menu_seen = False
562 idle_dict = universe.contents["mudpy.timing.idle.warn"].facets()
563 if self.state in idle_dict:
564 idle_state = self.state
566 idle_state = "default"
567 if idletime == idle_dict[idle_state]:
569 "$(eol)$(red)If you continue to be unproductive, "
570 + "you'll be shown the door...$(nrm)$(eol)"
574 """Save, load a new user and relocate the connection."""
576 # get out of the list
579 # create a new user object
582 # set everything equivalent
583 for attribute in vars(self).keys():
584 exec("new_user." + attribute + " = self." + attribute)
586 # the avatar needs a new owner
588 new_user.avatar.owner = new_user
591 universe.userlist.append(new_user)
593 # get rid of the old user object
596 def replace_old_connections(self):
597 """Disconnect active users with the same name."""
599 # the default return value
602 # iterate over each user in the list
603 for old_user in universe.userlist:
605 # the name is the same but it's not us
608 ) and old_user.account and old_user.account.get(
610 ) == self.account.get(
612 ) and old_user is not self:
616 "User " + self.account.get(
618 ) + " reconnected--closing old connection to "
619 + old_user.address + ".",
623 "$(eol)$(red)New connection from " + self.address
624 + ". Terminating old connection...$(nrm)$(eol)",
629 # close the old connection
630 old_user.connection.close()
632 # replace the old connection with this one
634 "$(eol)$(red)Taking over old connection from "
635 + old_user.address + ".$(nrm)"
637 old_user.connection = self.connection
638 old_user.last_address = old_user.address
639 old_user.address = self.address
641 # take this one out of the list and delete
647 # true if an old connection was replaced, false if not
650 def authenticate(self):
651 """Flag the user as authenticated and disconnect duplicates."""
652 if self.state is not "authenticated":
653 log("User " + self.account.get("name") + " logged in.", 2)
654 self.authenticated = True
655 if ("mudpy.limit" in universe.contents and self.account.subkey in
656 universe.contents["mudpy.limit"].get("admins")):
657 self.account.set("administrator", "True")
660 """Send the user their current menu."""
661 if not self.menu_seen:
662 self.menu_choices = get_menu_choices(self)
664 get_menu(self.state, self.error, self.menu_choices),
668 self.menu_seen = True
670 self.adjust_echoing()
672 def adjust_echoing(self):
673 """Adjust echoing to match state menu requirements."""
674 if mudpy.telnet.is_enabled(self, mudpy.telnet.TELOPT_ECHO,
676 if menu_echo_on(self.state):
677 mudpy.telnet.disable(self, mudpy.telnet.TELOPT_ECHO,
679 elif not menu_echo_on(self.state):
680 mudpy.telnet.enable(self, mudpy.telnet.TELOPT_ECHO,
684 """Remove a user from the list of connected users."""
685 universe.userlist.remove(self)
695 add_terminator=False,
698 """Send arbitrary text to a connected user."""
700 # unless raw mode is on, clean it up all nice and pretty
703 # strip extra $(eol) off if present
704 while output.startswith("$(eol)"):
706 while output.endswith("$(eol)"):
708 extra_lines = output.find("$(eol)$(eol)$(eol)")
709 while extra_lines > -1:
710 output = output[:extra_lines] + output[extra_lines + 6:]
711 extra_lines = output.find("$(eol)$(eol)$(eol)")
713 # start with a newline, append the message, then end
714 # with the optional eol string passed to this function
715 # and the ansi escape to return to normal text
716 if not just_prompt and prepend_padding:
717 if (not self.output_queue or not
718 self.output_queue[-1].endswith(b"\r\n")):
719 output = "$(eol)" + output
720 elif not self.output_queue[-1].endswith(
722 ) and not self.output_queue[-1].endswith(
725 output = "$(eol)" + output
726 output += eol + chr(27) + "[0m"
728 # tack on a prompt if active
729 if self.state == "active":
734 mode = self.avatar.get("mode")
736 output += "(" + mode + ") "
738 # find and replace macros in the output
739 output = replace_macros(self, output)
741 # wrap the text at the client's width (min 40, 0 disables)
743 if self.columns < 40:
747 output = wrap_ansi_text(output, wrap)
749 # if supported by the client, encode it utf-8
750 if mudpy.telnet.is_enabled(self, mudpy.telnet.TELOPT_BINARY,
752 encoded_output = output.encode("utf-8")
754 # otherwise just send ascii
756 encoded_output = output.encode("ascii", "replace")
758 # end with a terminator if requested
759 if add_prompt or add_terminator:
760 if mudpy.telnet.is_enabled(
761 self, mudpy.telnet.TELOPT_EOR, mudpy.telnet.US):
762 encoded_output += mudpy.telnet.telnet_proto(
763 mudpy.telnet.IAC, mudpy.telnet.EOR)
764 elif not mudpy.telnet.is_enabled(
765 self, mudpy.telnet.TELOPT_SGA, mudpy.telnet.US):
766 encoded_output += mudpy.telnet.telnet_proto(
767 mudpy.telnet.IAC, mudpy.telnet.GA)
769 # and tack it onto the queue
770 self.output_queue.append(encoded_output)
772 # if this is urgent, flush all pending output
776 # just dump raw bytes as requested
778 self.output_queue.append(output)
782 """All the things to do to the user per increment."""
784 # if the world is terminating, disconnect
785 if universe.terminate_flag:
786 self.state = "disconnecting"
787 self.menu_seen = False
789 # check for an idle connection and act appropriately
793 # if output is paused, decrement the counter
794 if self.state == "initial":
795 if self.negotiation_pause:
796 self.negotiation_pause -= 1
798 self.state = "entering_account_name"
800 # show the user a menu as needed
801 elif not self.state == "active":
804 # flush any pending output in the queue
807 # disconnect users with the appropriate state
808 if self.state == "disconnecting":
811 # check for input and add it to the queue
814 # there is input waiting in the queue
816 handle_user_input(self)
819 """Try to send the last item in the queue and remove it."""
820 if self.output_queue:
822 self.connection.send(self.output_queue[0])
823 except BrokenPipeError:
824 if self.account and self.account.get("name"):
825 account = self.account.get("name")
827 account = "an unknown user"
828 self.state = "disconnecting"
829 log("Broken pipe sending to %s." % account, 7)
830 del self.output_queue[0]
832 def enqueue_input(self):
833 """Process and enqueue any new input."""
835 # check for some input
837 raw_input = self.connection.recv(1024)
838 except (BlockingIOError, OSError):
844 # tack this on to any previous partial
845 self.partial_input += raw_input
847 # reply to and remove any IAC negotiation codes
848 mudpy.telnet.negotiate_telnet_options(self)
850 # separate multiple input lines
851 new_input_lines = self.partial_input.split(b"\n")
853 # if input doesn't end in a newline, replace the
854 # held partial input with the last line of it
855 if not self.partial_input.endswith(b"\n"):
856 self.partial_input = new_input_lines.pop()
858 # otherwise, chop off the extra null input and reset
859 # the held partial input
861 new_input_lines.pop()
862 self.partial_input = b""
864 # iterate over the remaining lines
865 for line in new_input_lines:
867 # strip off extra whitespace
870 # log non-printable characters remaining
871 if mudpy.telnet.is_enabled(self, mudpy.telnet.TELOPT_BINARY,
873 asciiline = bytes([x for x in line if 32 <= x <= 126])
874 if line != asciiline:
875 logline = "Non-ASCII characters from "
876 if self.account and self.account.get("name"):
877 logline += self.account.get("name") + ": "
879 logline += "unknown user: "
880 logline += repr(line)
885 line = line.decode("utf-8")
886 except UnicodeDecodeError:
887 logline = "Non-UTF-8 characters from "
888 if self.account and self.account.get("name"):
889 logline += self.account.get("name") + ": "
891 logline += "unknown user: "
892 logline += repr(line)
896 line = unicodedata.normalize("NFKC", line)
898 # put on the end of the queue
899 self.input_queue.append(line)
901 def new_avatar(self):
902 """Instantiate a new, unconfigured avatar for this user."""
904 while "avatar:" + self.account.get("name") + ":" + str(
906 ) in universe.categories["actor"].keys():
908 self.avatar = Element(
909 "actor:avatar:" + self.account.get("name") + ":" + str(
912 universe, old_style=True
914 self.avatar.append("inherit", "archetype:avatar")
915 self.account.append("avatars", self.avatar.key)
917 def delete_avatar(self, avatar):
918 """Remove an avatar from the world and from the user's list."""
919 if self.avatar is universe.contents[avatar]:
921 universe.contents[avatar].destroy()
922 avatars = self.account.get("avatars")
923 avatars.remove(avatar)
924 self.account.set("avatars", avatars)
926 def activate_avatar_by_index(self, index):
927 """Enter the world with a particular indexed avatar."""
928 self.avatar = universe.contents[
929 self.account.get("avatars")[index]]
930 self.avatar.owner = self
931 self.state = "active"
932 self.avatar.go_home()
934 def deactivate_avatar(self):
935 """Have the active avatar leave the world."""
937 current = self.avatar.get("location")
939 self.avatar.set("default_location", current)
940 self.avatar.echo_to_location(
941 "You suddenly wonder where " + self.avatar.get(
945 del universe.contents[current].contents[self.avatar.key]
946 self.avatar.remove_facet("location")
947 self.avatar.owner = None
951 """Destroy the user and associated avatars."""
952 for avatar in self.account.get("avatars"):
953 self.delete_avatar(avatar)
954 self.account.destroy()
956 def list_avatar_names(self):
957 """List names of assigned avatars."""
959 for avatar in self.account.get("avatars"):
961 avatars.append(universe.contents[avatar].get("name"))
963 log('Missing avatar "%s", possible data corruption.' %
968 def broadcast(message, add_prompt=True):
969 """Send a message to all connected users."""
970 for each_user in universe.userlist:
971 each_user.send("$(eol)" + message, add_prompt=add_prompt)
974 def log(message, level=0):
977 # a couple references we need
978 if "mudpy.log" in universe.contents:
979 file_name = universe.contents["mudpy.log"].get("file", "")
980 max_log_lines = universe.contents["mudpy.log"].get("lines", 0)
981 syslog_name = universe.contents["mudpy.log"].get("syslog", "")
986 timestamp = time.asctime()[4:19]
988 # turn the message into a list of nonempty lines
989 lines = [x for x in [(x.rstrip()) for x in message.split("\n")] if x != ""]
991 # send the timestamp and line to a file
993 if not os.path.isabs(file_name):
994 file_name = os.path.join(universe.startdir, file_name)
995 file_descriptor = codecs.open(file_name, "a", "utf-8")
997 file_descriptor.write(timestamp + " " + line + "\n")
998 file_descriptor.flush()
999 file_descriptor.close()
1001 # send the timestamp and line to standard output
1002 if ("mudpy.log" in universe.contents and
1003 universe.contents["mudpy.log"].get("stdout")):
1005 print(timestamp + " " + line)
1007 # send the line to the system log
1010 syslog_name.encode("utf-8"),
1012 syslog.LOG_INFO | syslog.LOG_DAEMON
1018 # display to connected administrators
1019 for user in universe.userlist:
1020 if user.state == "active" and user.account.get(
1022 ) and user.account.get("loglevel", 0) <= level:
1023 # iterate over every line in the message
1027 "$(bld)$(red)" + timestamp + " "
1028 + line.replace("$(", "$_(") + "$(nrm)$(eol)")
1029 user.send(full_message, flush=True)
1031 # add to the recent log list
1033 while 0 < len(universe.loglines) >= max_log_lines:
1034 del universe.loglines[0]
1035 universe.loglines.append((level, timestamp + " " + line))
1038 def get_loglines(level, start, stop):
1039 """Return a specific range of loglines filtered by level."""
1041 # filter the log lines
1042 loglines = [x for x in universe.loglines if x[0] >= level]
1044 # we need these in several places
1045 total_count = str(len(universe.loglines))
1046 filtered_count = len(loglines)
1048 # don't proceed if there are no lines
1051 # can't start before the begining or at the end
1052 if start > filtered_count:
1053 start = filtered_count
1057 # can't stop before we start
1064 message = "There are " + str(total_count)
1065 message += " log lines in memory and " + str(filtered_count)
1066 message += " at or above level " + str(level) + "."
1067 message += " The matching lines from " + str(stop) + " to "
1068 message += str(start) + " are:$(eol)$(eol)"
1070 # add the text from the selected lines
1072 range_lines = loglines[-start:-(stop - 1)]
1074 range_lines = loglines[-start:]
1075 for line in range_lines:
1076 message += " (" + str(line[0]) + ") " + line[1].replace(
1080 # there were no lines
1082 message = "None of the " + str(total_count)
1083 message += " lines in memory matches your request."
1089 def glyph_columns(character):
1090 """Convenience function to return the column width of a glyph."""
1091 if unicodedata.east_asian_width(character) in "FW":
1097 def wrap_ansi_text(text, width):
1098 """Wrap text with arbitrary width while ignoring ANSI colors."""
1100 # the current position in the entire text string, including all
1101 # characters, printable or otherwise
1104 # the current text position relative to the begining of the line,
1105 # ignoring color escape sequences
1108 # the absolute position of the most recent whitespace character
1111 # whether the current character is part of a color escape sequence
1114 # normalize any potentially composited unicode before we count it
1115 text = unicodedata.normalize("NFKC", text)
1117 # iterate over each character from the begining of the text
1118 for each_character in text:
1120 # the current character is the escape character
1121 if each_character == "\x1b" and not escape:
1124 # the current character is within an escape sequence
1127 # the current character is m, which terminates the
1129 if each_character == "m":
1132 # the current character is a newline, so reset the relative
1133 # position (start a new line)
1134 elif each_character == "\n":
1136 last_whitespace = abs_pos
1138 # the current character meets the requested maximum line width,
1139 # so we need to backtrack and find a space at which to wrap;
1140 # special care is taken to avoid an off-by-one in case the
1141 # current character is a double-width glyph
1142 elif each_character != "\r" and (
1143 rel_pos >= width or (
1144 rel_pos >= width - 1 and glyph_columns(
1150 # it's always possible we landed on whitespace
1151 if unicodedata.category(each_character) in ("Cc", "Zs"):
1152 last_whitespace = abs_pos
1154 # insert an eol in place of the space
1155 text = text[:last_whitespace] + "\r\n" + text[last_whitespace + 1:]
1157 # increase the absolute position because an eol is two
1158 # characters but the space it replaced was only one
1161 # now we're at the begining of a new line, plus the
1162 # number of characters wrapped from the previous line
1164 for remaining_characters in text[last_whitespace:abs_pos]:
1165 rel_pos += glyph_columns(remaining_characters)
1167 # as long as the character is not a carriage return and the
1168 # other above conditions haven't been met, count it as a
1169 # printable character
1170 elif each_character != "\r":
1171 rel_pos += glyph_columns(each_character)
1172 if unicodedata.category(each_character) in ("Cc", "Zs"):
1173 last_whitespace = abs_pos
1175 # increase the absolute position for every character
1178 # return the newly-wrapped text
1182 def weighted_choice(data):
1183 """Takes a dict weighted by value and returns a random key."""
1185 # this will hold our expanded list of keys from the data
1188 # create the expanded list of keys
1189 for key in data.keys():
1190 for count in range(data[key]):
1191 expanded.append(key)
1193 # return one at random
1194 return random.choice(expanded)
1198 """Returns a random character name."""
1200 # the vowels and consonants needed to create romaji syllables
1229 # this dict will hold our weighted list of syllables
1232 # generate the list with an even weighting
1233 for consonant in consonants:
1234 for vowel in vowels:
1235 syllables[consonant + vowel] = 1
1237 # we'll build the name into this string
1240 # create a name of random length from the syllables
1241 for syllable in range(random.randrange(2, 6)):
1242 name += weighted_choice(syllables)
1244 # strip any leading quotemark, capitalize and return the name
1245 return name.strip("'").capitalize()
1248 def replace_macros(user, text, is_input=False):
1249 """Replaces macros in text output."""
1251 # third person pronouns
1253 "female": {"obj": "her", "pos": "hers", "sub": "she"},
1254 "male": {"obj": "him", "pos": "his", "sub": "he"},
1255 "neuter": {"obj": "it", "pos": "its", "sub": "it"}
1258 # a dict of replacement macros
1261 "bld": chr(27) + "[1m",
1262 "nrm": chr(27) + "[0m",
1263 "blk": chr(27) + "[30m",
1264 "blu": chr(27) + "[34m",
1265 "cyn": chr(27) + "[36m",
1266 "grn": chr(27) + "[32m",
1267 "mgt": chr(27) + "[35m",
1268 "red": chr(27) + "[31m",
1269 "yel": chr(27) + "[33m",
1272 # add dynamic macros where possible
1274 account_name = user.account.get("name")
1276 macros["account"] = account_name
1278 avatar_gender = user.avatar.get("gender")
1280 macros["tpop"] = pronouns[avatar_gender]["obj"]
1281 macros["tppp"] = pronouns[avatar_gender]["pos"]
1282 macros["tpsp"] = pronouns[avatar_gender]["sub"]
1287 # find and replace per the macros dict
1288 macro_start = text.find("$(")
1289 if macro_start == -1:
1291 macro_end = text.find(")", macro_start) + 1
1292 macro = text[macro_start + 2:macro_end - 1]
1293 if macro in macros.keys():
1294 replacement = macros[macro]
1296 # this is how we handle local file inclusion (dangerous!)
1297 elif macro.startswith("inc:"):
1298 incfile = mudpy.data.find_file(macro[4:], universe=universe)
1299 if os.path.exists(incfile):
1300 incfd = codecs.open(incfile, "r", "utf-8")
1303 if line.endswith("\n") and not line.endswith("\r\n"):
1304 line = line.replace("\n", "\r\n")
1306 # lose the trailing eol
1307 replacement = replacement[:-2]
1310 log("Couldn't read included " + incfile + " file.", 7)
1312 # if we get here, log and replace it with null
1316 log("Unexpected replacement macro " +
1317 macro + " encountered.", 6)
1319 # and now we act on the replacement
1320 text = text.replace("$(" + macro + ")", replacement)
1322 # replace the look-like-a-macro sequence
1323 text = text.replace("$_(", "$(")
1328 def escape_macros(value):
1329 """Escapes replacement macros in text."""
1330 if type(value) is str:
1331 return value.replace("$(", "$_(")
1336 def first_word(text, separator=" "):
1337 """Returns a tuple of the first word and the rest."""
1339 if text.find(separator) > 0:
1340 return text.split(separator, 1)
1348 """The things which should happen on each pulse, aside from reloads."""
1350 # open the listening socket if it hasn't been already
1351 if not hasattr(universe, "listening_socket"):
1352 universe.initialize_server_socket()
1354 # assign a user if a new connection is waiting
1355 user = check_for_connection(universe.listening_socket)
1357 universe.userlist.append(user)
1359 # iterate over the connected users
1360 for user in universe.userlist:
1363 # add an element for counters if it doesn't exist
1364 if "counters" not in universe.categories["internal"]:
1365 universe.categories["internal"]["counters"] = Element(
1366 "internal:counters", universe, old_style=True
1369 # update the log every now and then
1370 if not universe.categories["internal"]["counters"].get("mark"):
1371 log(str(len(universe.userlist)) + " connection(s)")
1372 universe.categories["internal"]["counters"].set(
1373 "mark", universe.contents["mudpy.timing"].get("status")
1376 universe.categories["internal"]["counters"].set(
1377 "mark", universe.categories["internal"]["counters"].get(
1382 # periodically save everything
1383 if not universe.categories["internal"]["counters"].get("save"):
1385 universe.categories["internal"]["counters"].set(
1386 "save", universe.contents["mudpy.timing"].get("save")
1389 universe.categories["internal"]["counters"].set(
1390 "save", universe.categories["internal"]["counters"].get(
1395 # pause for a configurable amount of time (decimal seconds)
1396 time.sleep(universe.contents["mudpy.timing"].get("increment"))
1398 # increase the elapsed increment counter
1399 universe.categories["internal"]["counters"].set(
1400 "elapsed", universe.categories["internal"]["counters"].get(
1407 """Reload all relevant objects."""
1408 for user in universe.userlist[:]:
1410 for element in universe.contents.values():
1411 if element.origin.is_writeable():
1416 def check_for_connection(listening_socket):
1417 """Check for a waiting connection and return a new user object."""
1419 # try to accept a new connection
1421 connection, address = listening_socket.accept()
1422 except BlockingIOError:
1425 # note that we got one
1426 log("Connection from " + address[0], 2)
1428 # disable blocking so we can proceed whether or not we can send/receive
1429 connection.setblocking(0)
1431 # create a new user object
1434 # associate this connection with it
1435 user.connection = connection
1437 # set the user's ipa from the connection's ipa
1438 user.address = address[0]
1440 # let the client know we WILL EOR (RFC 885)
1441 mudpy.telnet.enable(user, mudpy.telnet.TELOPT_EOR, mudpy.telnet.US)
1442 user.negotiation_pause = 2
1444 # return the new user object
1448 def get_menu(state, error=None, choices=None):
1449 """Show the correct menu text to a user."""
1451 # make sure we don't reuse a mutable sequence by default
1455 # get the description or error text
1456 message = get_menu_description(state, error)
1458 # get menu choices for the current state
1459 message += get_formatted_menu_choices(state, choices)
1461 # try to get a prompt, if it was defined
1462 message += get_menu_prompt(state)
1464 # throw in the default choice, if it exists
1465 message += get_formatted_default_menu_choice(state)
1467 # display a message indicating if echo is off
1468 message += get_echo_message(state)
1470 # return the assembly of various strings defined above
1474 def menu_echo_on(state):
1475 """True if echo is on, false if it is off."""
1476 return universe.categories["menu"][state].get("echo", True)
1479 def get_echo_message(state):
1480 """Return a message indicating that echo is off."""
1481 if menu_echo_on(state):
1484 return "(won't echo) "
1487 def get_default_menu_choice(state):
1488 """Return the default choice for a menu."""
1489 return universe.categories["menu"][state].get("default")
1492 def get_formatted_default_menu_choice(state):
1493 """Default menu choice foratted for inclusion in a prompt string."""
1494 default_choice = get_default_menu_choice(state)
1496 return "[$(red)" + default_choice + "$(nrm)] "
1501 def get_menu_description(state, error):
1502 """Get the description or error text."""
1504 # an error condition was raised by the handler
1507 # try to get an error message matching the condition
1509 description = universe.categories[
1510 "menu"][state].get("error_" + error)
1512 description = "That is not a valid choice..."
1513 description = "$(red)" + description + "$(nrm)"
1515 # there was no error condition
1518 # try to get a menu description for the current state
1519 description = universe.categories["menu"][state].get("description")
1521 # return the description or error message
1523 description += "$(eol)$(eol)"
1527 def get_menu_prompt(state):
1528 """Try to get a prompt, if it was defined."""
1529 prompt = universe.categories["menu"][state].get("prompt")
1535 def get_menu_choices(user):
1536 """Return a dict of choice:meaning."""
1537 menu = universe.categories["menu"][user.state]
1538 create_choices = menu.get("create")
1540 choices = eval(create_choices)
1546 for facet in menu.facets():
1547 if facet.startswith("demand_") and not eval(
1548 universe.categories["menu"][user.state].get(facet)
1550 ignores.append(facet.split("_", 2)[1])
1551 elif facet.startswith("create_"):
1552 creates[facet] = facet.split("_", 2)[1]
1553 elif facet.startswith("choice_"):
1554 options[facet] = facet.split("_", 2)[1]
1555 for facet in creates.keys():
1556 if not creates[facet] in ignores:
1557 choices[creates[facet]] = eval(menu.get(facet))
1558 for facet in options.keys():
1559 if not options[facet] in ignores:
1560 choices[options[facet]] = menu.get(facet)
1564 def get_formatted_menu_choices(state, choices):
1565 """Returns a formatted string of menu choices."""
1567 choice_keys = list(choices.keys())
1569 for choice in choice_keys:
1570 choice_output += " [$(red)" + choice + "$(nrm)] " + choices[
1574 choice_output += "$(eol)"
1575 return choice_output
1578 def get_menu_branches(state):
1579 """Return a dict of choice:branch."""
1581 for facet in universe.categories["menu"][state].facets():
1582 if facet.startswith("branch_"):
1584 facet.split("_", 2)[1]
1585 ] = universe.categories["menu"][state].get(facet)
1589 def get_default_branch(state):
1590 """Return the default branch."""
1591 return universe.categories["menu"][state].get("branch")
1594 def get_choice_branch(user, choice):
1595 """Returns the new state matching the given choice."""
1596 branches = get_menu_branches(user.state)
1597 if choice in branches.keys():
1598 return branches[choice]
1599 elif choice in user.menu_choices.keys():
1600 return get_default_branch(user.state)
1605 def get_menu_actions(state):
1606 """Return a dict of choice:branch."""
1608 for facet in universe.categories["menu"][state].facets():
1609 if facet.startswith("action_"):
1611 facet.split("_", 2)[1]
1612 ] = universe.categories["menu"][state].get(facet)
1616 def get_default_action(state):
1617 """Return the default action."""
1618 return universe.categories["menu"][state].get("action")
1621 def get_choice_action(user, choice):
1622 """Run any indicated script for the given choice."""
1623 actions = get_menu_actions(user.state)
1624 if choice in actions.keys():
1625 return actions[choice]
1626 elif choice in user.menu_choices.keys():
1627 return get_default_action(user.state)
1632 def handle_user_input(user):
1633 """The main handler, branches to a state-specific handler."""
1635 # if the user's client echo is off, send a blank line for aesthetics
1636 if mudpy.telnet.is_enabled(user, mudpy.telnet.TELOPT_ECHO,
1638 user.send("", add_prompt=False, prepend_padding=False)
1640 # check to make sure the state is expected, then call that handler
1641 if "handler_" + user.state in globals():
1642 exec("handler_" + user.state + "(user)")
1644 generic_menu_handler(user)
1646 # since we got input, flag that the menu/prompt needs to be redisplayed
1647 user.menu_seen = False
1649 # update the last_input timestamp while we're at it
1650 user.last_input = universe.get_time()
1653 def generic_menu_handler(user):
1654 """A generic menu choice handler."""
1656 # get a lower-case representation of the next line of input
1657 if user.input_queue:
1658 choice = user.input_queue.pop(0)
1660 choice = choice.lower()
1664 choice = get_default_menu_choice(user.state)
1665 if choice in user.menu_choices:
1666 exec(get_choice_action(user, choice))
1667 new_state = get_choice_branch(user, choice)
1669 user.state = new_state
1671 user.error = "default"
1674 def handler_entering_account_name(user):
1675 """Handle the login account name."""
1677 # get the next waiting line of input
1678 input_data = user.input_queue.pop(0)
1680 # did the user enter anything?
1683 # keep only the first word and convert to lower-case
1684 name = input_data.lower()
1686 # fail if there are non-alphanumeric characters
1687 if name != "".join(filter(
1688 lambda x: x >= "0" and x <= "9" or x >= "a" and x <= "z",
1690 user.error = "bad_name"
1692 # if that account exists, time to request a password
1693 elif name in universe.categories["account"]:
1694 user.account = universe.categories["account"][name]
1695 user.state = "checking_password"
1697 # otherwise, this could be a brand new user
1699 user.account = Element("account:" + name, universe, old_style=True)
1700 user.account.set("name", name)
1701 log("New user: " + name, 2)
1702 user.state = "checking_new_account_name"
1704 # if the user entered nothing for a name, then buhbye
1706 user.state = "disconnecting"
1709 def handler_checking_password(user):
1710 """Handle the login account password."""
1712 # get the next waiting line of input
1713 input_data = user.input_queue.pop(0)
1715 if "mudpy.limit" in universe.contents:
1716 max_password_tries = universe.contents["mudpy.limit"].get(
1717 "password_tries", 3)
1719 max_password_tries = 3
1721 # does the hashed input equal the stored hash?
1722 if mudpy.password.verify(input_data, user.account.get("passhash")):
1724 # if so, set the username and load from cold storage
1725 if not user.replace_old_connections():
1727 user.state = "main_utility"
1729 # if at first your hashes don't match, try, try again
1730 elif user.password_tries < max_password_tries - 1:
1731 user.password_tries += 1
1732 user.error = "incorrect"
1734 # we've exceeded the maximum number of password failures, so disconnect
1737 "$(eol)$(red)Too many failed password attempts...$(nrm)$(eol)"
1739 user.state = "disconnecting"
1742 def handler_entering_new_password(user):
1743 """Handle a new password entry."""
1745 # get the next waiting line of input
1746 input_data = user.input_queue.pop(0)
1748 if "mudpy.limit" in universe.contents:
1749 max_password_tries = universe.contents["mudpy.limit"].get(
1750 "password_tries", 3)
1752 max_password_tries = 3
1754 # make sure the password is strong--at least one upper, one lower and
1755 # one digit, seven or more characters in length
1756 if len(input_data) > 6 and len(
1757 list(filter(lambda x: x >= "0" and x <= "9", input_data))
1759 list(filter(lambda x: x >= "A" and x <= "Z", input_data))
1761 list(filter(lambda x: x >= "a" and x <= "z", input_data))
1764 # hash and store it, then move on to verification
1765 user.account.set("passhash", mudpy.password.create(input_data))
1766 user.state = "verifying_new_password"
1768 # the password was weak, try again if you haven't tried too many times
1769 elif user.password_tries < max_password_tries - 1:
1770 user.password_tries += 1
1773 # too many tries, so adios
1776 "$(eol)$(red)Too many failed password attempts...$(nrm)$(eol)"
1778 user.account.destroy()
1779 user.state = "disconnecting"
1782 def handler_verifying_new_password(user):
1783 """Handle the re-entered new password for verification."""
1785 # get the next waiting line of input
1786 input_data = user.input_queue.pop(0)
1788 if "mudpy.limit" in universe.contents:
1789 max_password_tries = universe.contents["mudpy.limit"].get(
1790 "password_tries", 3)
1792 max_password_tries = 3
1794 # hash the input and match it to storage
1795 if mudpy.password.verify(input_data, user.account.get("passhash")):
1798 # the hashes matched, so go active
1799 if not user.replace_old_connections():
1800 user.state = "main_utility"
1802 # go back to entering the new password as long as you haven't tried
1804 elif user.password_tries < max_password_tries - 1:
1805 user.password_tries += 1
1806 user.error = "differs"
1807 user.state = "entering_new_password"
1809 # otherwise, sayonara
1812 "$(eol)$(red)Too many failed password attempts...$(nrm)$(eol)"
1814 user.account.destroy()
1815 user.state = "disconnecting"
1818 def handler_active(user):
1819 """Handle input for active users."""
1821 # get the next waiting line of input
1822 input_data = user.input_queue.pop(0)
1827 # split out the command and parameters
1829 mode = actor.get("mode")
1830 if mode and input_data.startswith("!"):
1831 command_name, parameters = first_word(input_data[1:])
1832 elif mode == "chat":
1833 command_name = "say"
1834 parameters = input_data
1836 command_name, parameters = first_word(input_data)
1838 # lowercase the command
1839 command_name = command_name.lower()
1841 # the command matches a command word for which we have data
1842 if command_name in universe.categories["command"]:
1843 command = universe.categories["command"][command_name]
1847 # if it's allowed, do it
1848 if actor.can_run(command):
1849 exec(command.get("action"))
1851 # otherwise, give an error
1853 command_error(actor, input_data)
1855 # if no input, just idle back with a prompt
1857 user.send("", just_prompt=True)
1860 def command_halt(actor, parameters):
1861 """Halt the world."""
1864 # see if there's a message or use a generic one
1866 message = "Halting: " + parameters
1868 message = "User " + actor.owner.account.get(
1870 ) + " halted the world."
1873 broadcast(message, add_prompt=False)
1876 # set a flag to terminate the world
1877 universe.terminate_flag = True
1880 def command_reload(actor):
1881 """Reload all code modules, configs and data."""
1884 # let the user know and log
1885 actor.send("Reloading all code modules, configs and data.")
1888 actor.owner.account.get("name") + " reloaded the world.",
1892 # set a flag to reload
1893 universe.reload_flag = True
1896 def command_quit(actor):
1897 """Leave the world and go back to the main menu."""
1899 actor.owner.state = "main_utility"
1900 actor.owner.deactivate_avatar()
1903 def command_help(actor, parameters):
1904 """List available commands and provide help for commands."""
1906 # did the user ask for help on a specific command word?
1907 if parameters and actor.owner:
1909 # is the command word one for which we have data?
1910 if parameters in universe.categories["command"]:
1911 command = universe.categories["command"][parameters]
1915 # only for allowed commands
1916 if actor.can_run(command):
1918 # add a description if provided
1919 description = command.get("description")
1921 description = "(no short description provided)"
1922 if command.get("administrative"):
1926 output += parameters + "$(nrm) - " + description + "$(eol)$(eol)"
1928 # add the help text if provided
1929 help_text = command.get("help")
1931 help_text = "No help is provided for this command."
1934 # list related commands
1935 see_also = command.get("see_also")
1937 really_see_also = ""
1938 for item in see_also:
1939 if item in universe.categories["command"]:
1940 command = universe.categories["command"][item]
1941 if actor.can_run(command):
1943 really_see_also += ", "
1944 if command.get("administrative"):
1945 really_see_also += "$(red)"
1947 really_see_also += "$(grn)"
1948 really_see_also += item + "$(nrm)"
1950 output += "$(eol)$(eol)See also: " + really_see_also
1952 # no data for the requested command word
1954 output = "That is not an available command."
1956 # no specific command word was indicated
1959 # give a sorted list of commands with descriptions if provided
1960 output = "These are the commands available to you:$(eol)$(eol)"
1961 sorted_commands = list(universe.categories["command"].keys())
1962 sorted_commands.sort()
1963 for item in sorted_commands:
1964 command = universe.categories["command"][item]
1965 if actor.can_run(command):
1966 description = command.get("description")
1968 description = "(no short description provided)"
1969 if command.get("administrative"):
1973 output += item + "$(nrm) - " + description + "$(eol)"
1974 output += ('$(eol)Enter "help COMMAND" for help on a command '
1977 # send the accumulated output to the user
1981 def command_move(actor, parameters):
1982 """Move the avatar in a given direction."""
1983 if parameters in universe.contents[actor.get("location")].portals():
1984 actor.move_direction(parameters)
1986 actor.send("You cannot go that way.")
1989 def command_look(actor, parameters):
1992 actor.send("You can't look at or in anything yet.")
1994 actor.look_at(actor.get("location"))
1997 def command_say(actor, parameters):
1998 """Speak to others in the same area."""
2000 # check for replacement macros and escape them
2001 parameters = escape_macros(parameters)
2003 # if the message is wrapped in quotes, remove them and leave contents
2005 if parameters.startswith('"') and parameters.endswith('"'):
2006 message = parameters[1:-1]
2009 # otherwise, get rid of stray quote marks on the ends of the message
2011 message = parameters.strip('''"'`''')
2014 # the user entered a message
2017 # match the punctuation used, if any, to an action
2018 if "mudpy.linguistic" in universe.contents:
2019 actions = universe.contents["mudpy.linguistic"].get("actions", {})
2020 default_punctuation = (universe.contents["mudpy.linguistic"].get(
2021 "default_punctuation", "."))
2024 default_punctuation = "."
2027 # reverse sort punctuation options so the longest match wins
2028 for mark in sorted(actions.keys(), reverse=True):
2029 if not literal and message.endswith(mark):
2030 action = actions[mark]
2033 # add punctuation if needed
2035 action = actions[default_punctuation]
2036 if message and not (
2037 literal or unicodedata.category(message[-1]) == "Po"
2039 message += default_punctuation
2041 # failsafe checks to avoid unwanted reformatting and null strings
2042 if message and not literal:
2044 # decapitalize the first letter to improve matching
2045 message = message[0].lower() + message[1:]
2047 # iterate over all words in message, replacing typos
2048 if "mudpy.linguistic" in universe.contents:
2049 typos = universe.contents["mudpy.linguistic"].get("typos", {})
2052 words = message.split()
2053 for index in range(len(words)):
2055 while unicodedata.category(word[0]) == "Po":
2057 while unicodedata.category(word[-1]) == "Po":
2059 if word in typos.keys():
2060 words[index] = words[index].replace(word, typos[word])
2061 message = " ".join(words)
2063 # capitalize the first letter
2064 message = message[0].upper() + message[1:]
2068 actor.echo_to_location(
2069 actor.get("name") + " " + action + 's, "' + message + '"'
2071 actor.send("You " + action + ', "' + message + '"')
2073 # there was no message
2075 actor.send("What do you want to say?")
2078 def command_chat(actor):
2079 """Toggle chat mode."""
2080 mode = actor.get("mode")
2082 actor.set("mode", "chat")
2083 actor.send("Entering chat mode (use $(grn)!chat$(nrm) to exit).")
2084 elif mode == "chat":
2085 actor.remove_facet("mode")
2086 actor.send("Exiting chat mode.")
2088 actor.send("Sorry, but you're already busy with something else!")
2091 def command_show(actor, parameters):
2092 """Show program data."""
2094 arguments = parameters.split()
2096 message = "What do you want to show?"
2097 elif arguments[0] == "time":
2098 message = universe.categories["internal"]["counters"].get(
2100 ) + " increments elapsed since the world was created."
2101 elif arguments[0] == "categories":
2102 message = "These are the element categories:$(eol)"
2103 categories = list(universe.categories.keys())
2105 for category in categories:
2106 message += "$(eol) $(grn)" + category + "$(nrm)"
2107 elif arguments[0] == "files":
2108 message = "These are the current files containing the universe:$(eol)"
2109 filenames = list(universe.files.keys())
2111 for filename in filenames:
2112 if universe.files[filename].is_writeable():
2116 message += ("$(eol) $(red)(" + status + ") $(grn)" + filename
2118 elif arguments[0] == "category":
2119 if len(arguments) != 2:
2120 message = "You must specify one category."
2121 elif arguments[1] in universe.categories:
2122 message = ('These are the elements in the "' + arguments[1]
2123 + '" category:$(eol)')
2126 universe.categories[arguments[1]][x].key
2127 ) for x in universe.categories[arguments[1]].keys()
2130 for element in elements:
2131 message += "$(eol) $(grn)" + element + "$(nrm)"
2133 message = 'Category "' + arguments[1] + '" does not exist.'
2134 elif arguments[0] == "file":
2135 if len(arguments) != 2:
2136 message = "You must specify one file."
2137 elif arguments[1] in universe.files:
2138 message = ('These are the elements in the "' + arguments[1]
2140 elements = universe.files[arguments[1]].data.keys()
2142 for element in elements:
2143 message += "$(eol) $(grn)" + element + "$(nrm)"
2145 message = 'Category "' + arguments[1] + '" does not exist.'
2146 elif arguments[0] == "element":
2147 if len(arguments) != 2:
2148 message = "You must specify one element."
2149 elif arguments[1].strip(".") in universe.contents:
2150 element = universe.contents[arguments[1].strip(".")]
2151 message = ('These are the properties of the "' + arguments[1]
2152 + '" element (in "' + element.origin.filename
2154 facets = element.facets()
2155 for facet in sorted(facets):
2156 if element.old_style:
2157 message += ("$(eol) $(grn)%s: $(red)%s$(nrm)" %
2158 (facet, escape_macros(element.get(facet))))
2160 message += ("$(eol) $(grn)%s: $(red)%s$(nrm)" %
2161 (facet, str(facets[facet])))
2163 message = 'Element "' + arguments[1] + '" does not exist.'
2164 elif arguments[0] == "result":
2165 if len(arguments) < 2:
2166 message = "You need to specify an expression."
2169 message = repr(eval(" ".join(arguments[1:])))
2170 except Exception as e:
2171 message = ("$(red)Your expression raised an exception...$(eol)"
2172 "$(eol)$(bld)%s$(nrm)" % e)
2173 elif arguments[0] == "log":
2174 if len(arguments) == 4:
2175 if re.match(r"^\d+$", arguments[3]) and int(arguments[3]) >= 0:
2176 stop = int(arguments[3])
2181 if len(arguments) >= 3:
2182 if re.match(r"^\d+$", arguments[2]) and int(arguments[2]) > 0:
2183 start = int(arguments[2])
2188 if len(arguments) >= 2:
2189 if (re.match(r"^\d+$", arguments[1])
2190 and 0 <= int(arguments[1]) <= 9):
2191 level = int(arguments[1])
2194 elif 0 <= actor.owner.account.get("loglevel", 0) <= 9:
2195 level = actor.owner.account.get("loglevel", 0)
2198 if level > -1 and start > -1 and stop > -1:
2199 message = get_loglines(level, start, stop)
2201 message = ("When specified, level must be 0-9 (default 1), "
2202 "start and stop must be >=1 (default 10 and 1).")
2204 message = '''I don't know what "''' + parameters + '" is.'
2208 def command_create(actor, parameters):
2209 """Create an element if it does not exist."""
2211 message = "You must at least specify an element to create."
2212 elif not actor.owner:
2215 arguments = parameters.split()
2216 if len(arguments) == 1:
2217 arguments.append("")
2218 if len(arguments) == 2:
2219 element, filename = arguments
2220 if element in universe.contents:
2221 message = 'The "' + element + '" element already exists.'
2223 message = ('You create "' +
2224 element + '" within the universe.')
2225 logline = actor.owner.account.get(
2227 ) + " created an element: " + element
2229 logline += " in file " + filename
2230 if filename not in universe.files:
2232 ' Warning: "' + filename + '" is not yet '
2233 "included in any other file and will not be read "
2234 "on startup unless this is remedied.")
2235 Element(element, universe, filename, old_style=True)
2237 elif len(arguments) > 2:
2238 message = "You can only specify an element and a filename."
2242 def command_destroy(actor, parameters):
2243 """Destroy an element if it exists."""
2246 message = "You must specify an element to destroy."
2248 if parameters not in universe.contents:
2249 message = 'The "' + parameters + '" element does not exist.'
2251 universe.contents[parameters].destroy()
2252 message = ('You destroy "' + parameters
2253 + '" within the universe.')
2255 actor.owner.account.get(
2257 ) + " destroyed an element: " + parameters,
2263 def command_set(actor, parameters):
2264 """Set a facet of an element."""
2266 message = "You must specify an element, a facet and a value."
2268 arguments = parameters.split(" ", 2)
2269 if len(arguments) == 1:
2270 message = ('What facet of element "' + arguments[0]
2271 + '" would you like to set?')
2272 elif len(arguments) == 2:
2273 message = ('What value would you like to set for the "' +
2274 arguments[1] + '" facet of the "' + arguments[0]
2277 element, facet, value = arguments
2278 if element not in universe.contents:
2279 message = 'The "' + element + '" element does not exist.'
2282 universe.contents[element].set(facet, value)
2284 message = ('Value "%s" of type "%s" cannot be coerced '
2285 'to the correct datatype for facet "%s".' %
2286 (value, type(value), facet))
2288 message = ('You have successfully (re)set the "' + facet
2289 + '" facet of element "' + element
2290 + '". Try "show element ' +
2291 element + '" for verification.')
2295 def command_delete(actor, parameters):
2296 """Delete a facet from an element."""
2298 message = "You must specify an element and a facet."
2300 arguments = parameters.split(" ")
2301 if len(arguments) == 1:
2302 message = ('What facet of element "' + arguments[0]
2303 + '" would you like to delete?')
2304 elif len(arguments) != 2:
2305 message = "You may only specify an element and a facet."
2307 element, facet = arguments
2308 if element not in universe.contents:
2309 message = 'The "' + element + '" element does not exist.'
2310 elif facet not in universe.contents[element].facets():
2311 message = ('The "' + element + '" element has no "' + facet
2314 universe.contents[element].remove_facet(facet)
2315 message = ('You have successfully deleted the "' + facet
2316 + '" facet of element "' + element
2317 + '". Try "show element ' +
2318 element + '" for verification.')
2322 def command_error(actor, input_data):
2323 """Generic error for an unrecognized command word."""
2325 # 90% of the time use a generic error
2326 if random.randrange(10):
2327 message = '''I'm not sure what "''' + input_data + '''" means...'''
2329 # 10% of the time use the classic diku error
2331 message = "Arglebargle, glop-glyf!?!"
2333 # send the error message
2337 def daemonize(universe):
2338 """Fork and disassociate from everything."""
2340 # only if this is what we're configured to do
2341 if "mudpy.process" in universe.contents and universe.contents[
2342 "mudpy.process"].get("daemon"):
2344 # log before we start forking around, so the terminal gets the message
2345 log("Disassociating from the controlling terminal.")
2347 # fork off and die, so we free up the controlling terminal
2351 # switch to a new process group
2354 # fork some more, this time to free us from the old process group
2358 # reset the working directory so we don't needlessly tie up mounts
2361 # clear the file creation mask so we can bend it to our will later
2364 # redirect stdin/stdout/stderr and close off their former descriptors
2365 for stdpipe in range(3):
2367 sys.stdin = codecs.open("/dev/null", "r", "utf-8")
2368 sys.__stdin__ = codecs.open("/dev/null", "r", "utf-8")
2369 sys.stdout = codecs.open("/dev/null", "w", "utf-8")
2370 sys.stderr = codecs.open("/dev/null", "w", "utf-8")
2371 sys.__stdout__ = codecs.open("/dev/null", "w", "utf-8")
2372 sys.__stderr__ = codecs.open("/dev/null", "w", "utf-8")
2375 def create_pidfile(universe):
2376 """Write a file containing the current process ID."""
2377 pid = str(os.getpid())
2378 log("Process ID: " + pid)
2379 if "mudpy.process" in universe.contents:
2380 file_name = universe.contents["mudpy.process"].get("pidfile", "")
2384 if not os.path.isabs(file_name):
2385 file_name = os.path.join(universe.startdir, file_name)
2386 file_descriptor = codecs.open(file_name, "w", "utf-8")
2387 file_descriptor.write(pid + "\n")
2388 file_descriptor.flush()
2389 file_descriptor.close()
2392 def remove_pidfile(universe):
2393 """Remove the file containing the current process ID."""
2394 if "mudpy.process" in universe.contents:
2395 file_name = universe.contents["mudpy.process"].get("pidfile", "")
2399 if not os.path.isabs(file_name):
2400 file_name = os.path.join(universe.startdir, file_name)
2401 if os.access(file_name, os.W_OK):
2402 os.remove(file_name)
2405 def excepthook(excepttype, value, tracebackdata):
2406 """Handle uncaught exceptions."""
2408 # assemble the list of errors into a single string
2410 traceback.format_exception(excepttype, value, tracebackdata)
2413 # try to log it, if possible
2416 except Exception as e:
2417 # try to write it to stderr, if possible
2418 sys.stderr.write(message + "\nException while logging...\n%s" % e)
2421 def sighook(what, where):
2422 """Handle external signals."""
2425 message = "Caught signal: "
2427 # for a hangup signal
2428 if what == signal.SIGHUP:
2429 message += "hangup (reloading)"
2430 universe.reload_flag = True
2432 # for a terminate signal
2433 elif what == signal.SIGTERM:
2434 message += "terminate (halting)"
2435 universe.terminate_flag = True
2437 # catchall for unexpected signals
2439 message += str(what) + " (unhandled)"
2445 def override_excepthook():
2446 """Redefine sys.excepthook with our own."""
2447 sys.excepthook = excepthook
2450 def assign_sighook():
2451 """Assign a customized handler for some signals."""
2452 signal.signal(signal.SIGHUP, sighook)
2453 signal.signal(signal.SIGTERM, sighook)
2457 """This contains functions to be performed when starting the engine."""
2459 # see if a configuration file was specified
2460 if len(sys.argv) > 1:
2461 conffile = sys.argv[1]
2467 universe = Universe(conffile, True)
2469 # report any loglines which accumulated during setup
2470 for logline in universe.setup_loglines:
2472 universe.setup_loglines = []
2474 # log an initial message
2475 log("Started mudpy with command line: " + " ".join(sys.argv))
2477 # fork and disassociate
2480 # override the default exception handler so we get logging first thing
2481 override_excepthook()
2483 # set up custom signal handlers
2487 create_pidfile(universe)
2489 # pass the initialized universe back
2494 """These are functions performed when shutting down the engine."""
2496 # the loop has terminated, so save persistent data
2499 # log a final message
2500 log("Shutting down now.")
2502 # get rid of the pidfile
2503 remove_pidfile(universe)