1 # -*- coding: utf-8 -*-
2 """Miscellaneous functions for the mudpy engine."""
4 # Copyright (c) 2004-2014 Jeremy Stanley <fungi@yuggoth.org>. Permission
5 # to use, copy, modify, and distribute this software is granted under
6 # terms provided in the LICENSE file distributed with this software.
25 """An element of the universe."""
27 def __init__(self, key, universe, filename=None):
28 """Set up a new element."""
30 # keep track of our key name
33 # keep track of what universe it's loading into
34 self.universe = universe
36 # clone attributes if this is replacing another element
37 if self.key in self.universe.contents:
38 old_element = self.universe.contents[self.key]
39 for attribute in vars(old_element).keys():
40 exec("self." + attribute + " = old_element." + attribute)
42 self.owner.avatar = self
44 # i guess this is a new element then
47 # not owned by a user by default (used for avatars)
50 # no contents in here by default
53 # parse out appropriate category and subkey names, add to list
54 if self.key.find(":") > 0:
55 self.category, self.subkey = self.key.split(":", 1)
57 self.category = "other"
58 self.subkey = self.key
59 if self.category not in self.universe.categories:
60 self.category = "other"
61 self.subkey = self.key
63 # get an appropriate filename for the origin
65 filename = self.universe.default_origins[self.category]
66 if not os.path.isabs(filename):
67 filename = os.path.abspath(filename)
69 # add the file if it doesn't exist yet
70 if filename not in self.universe.files:
71 mudpy.data.DataFile(filename, self.universe)
73 # record or reset a pointer to the origin file
74 self.origin = self.universe.files[filename]
76 # add a data section to the origin if necessary
77 if self.key not in self.origin.data:
78 self.origin.data[self.key] = {}
80 # add or replace this element in the universe
81 self.universe.contents[self.key] = self
82 self.universe.categories[self.category][self.subkey] = self
85 """Create a new element and replace this one."""
86 Element(self.key, self.universe, self.origin.filename)
90 """Remove an element from the universe and destroy it."""
91 del(self.origin.data[self.key])
92 del self.universe.categories[self.category][self.subkey]
93 del self.universe.contents[self.key]
97 """Return a list of non-inherited facets for this element."""
99 return self.origin.data[self.key].keys()
100 except (AttributeError, KeyError):
103 def has_facet(self, facet):
104 """Return whether the non-inherited facet exists."""
105 return facet in self.facets()
107 def remove_facet(self, facet):
108 """Remove a facet from the element."""
109 if self.has_facet(facet):
110 del(self.origin.data[self.key][facet])
111 self.origin.modified = True
114 """Return a list of the element's inheritance lineage."""
115 if self.has_facet("inherit"):
116 ancestry = self.get("inherit")
119 for parent in ancestry[:]:
120 ancestors = self.universe.contents[parent].ancestry()
121 for ancestor in ancestors:
122 if ancestor not in ancestry:
123 ancestry.append(ancestor)
128 def get(self, facet, default=None):
129 """Retrieve values."""
133 return self.origin.data[self.key][facet]
134 except (KeyError, TypeError):
136 if self.has_facet("inherit"):
137 for ancestor in self.ancestry():
138 if self.universe.contents[ancestor].has_facet(facet):
139 return self.universe.contents[ancestor].get(facet)
143 def set(self, facet, value):
145 if not self.has_facet(facet) or not self.get(facet) == value:
146 if self.key not in self.origin.data:
147 self.origin.data[self.key] = {}
148 self.origin.data[self.key][facet] = value
149 self.origin.modified = True
151 def append(self, facet, value):
152 """Append value to a list."""
153 newlist = self.get(facet)
156 if type(newlist) is not list:
157 newlist = list(newlist)
158 newlist.append(value)
159 self.set(facet, newlist)
169 add_terminator=False,
172 """Convenience method to pass messages to an owner."""
185 def can_run(self, command):
186 """Check if the user can run this command object."""
188 # has to be in the commands category
189 if command not in self.universe.categories["command"].values():
192 # avatars of administrators can run any command
193 elif self.owner and self.owner.account.get("administrator"):
196 # everyone can run non-administrative commands
197 elif not command.get("administrative"):
200 # otherwise the command cannot be run by this actor
204 # pass back the result
207 def update_location(self):
208 """Make sure the location's contents contain this element."""
209 area = self.get("location")
210 if area in self.universe.contents:
211 self.universe.contents[area].contents[self.key] = self
213 def clean_contents(self):
214 """Make sure the element's contents aren't bogus."""
215 for element in self.contents.values():
216 if element.get("location") != self.key:
217 del self.contents[element.key]
219 def go_to(self, area):
220 """Relocate the element to a specific area."""
221 current = self.get("location")
222 if current and self.key in self.universe.contents[current].contents:
223 del universe.contents[current].contents[self.key]
224 if area in self.universe.contents:
225 self.set("location", area)
226 self.universe.contents[area].contents[self.key] = self
230 """Relocate the element to its default location."""
231 self.go_to(self.get("default_location"))
232 self.echo_to_location(
233 "You suddenly realize that " + self.get("name") + " is here."
236 def move_direction(self, direction):
237 """Relocate the element in a specified direction."""
238 self.echo_to_location(
241 ) + " exits " + self.universe.categories[
252 "You exit " + self.universe.categories[
264 self.universe.contents[
265 self.get("location")].link_neighbor(direction)
267 self.echo_to_location(
270 ) + " arrives from " + self.universe.categories[
281 def look_at(self, key):
282 """Show an element to another element."""
284 element = self.universe.contents[key]
286 name = element.get("name")
288 message += "$(cyn)" + name + "$(nrm)$(eol)"
289 description = element.get("description")
291 message += description + "$(eol)"
292 portal_list = list(element.portals().keys())
295 message += "$(cyn)[ Exits: " + ", ".join(
298 for element in self.universe.contents[
301 if element.get("is_actor") and element is not self:
302 message += "$(yel)" + element.get(
304 ) + " is here.$(nrm)$(eol)"
305 elif element is not self:
306 message += "$(grn)" + element.get(
312 """Map the portal directions for an area to neighbors."""
314 if re.match("""^area:-?\d+,-?\d+,-?\d+$""", self.key):
315 coordinates = [(int(x))
316 for x in self.key.split(":")[1].split(",")]
317 directions = self.universe.categories["internal"]["directions"]
321 x, directions.get(x)["vector"]
322 ) for x in directions.facets()
325 for portal in self.get("gridlinks"):
326 adjacent = map(lambda c, o: c + o,
327 coordinates, offsets[portal])
328 neighbor = "area:" + ",".join(
329 [(str(x)) for x in adjacent]
331 if neighbor in self.universe.contents:
332 portals[portal] = neighbor
333 for facet in self.facets():
334 if facet.startswith("link_"):
335 neighbor = self.get(facet)
336 if neighbor in self.universe.contents:
337 portal = facet.split("_")[1]
338 portals[portal] = neighbor
341 def link_neighbor(self, direction):
342 """Return the element linked in a given direction."""
343 portals = self.portals()
344 if direction in portals:
345 return portals[direction]
347 def echo_to_location(self, message):
348 """Show a message to other elements in the current location."""
349 for element in self.universe.contents[
352 if element is not self:
353 element.send(message)
360 def __init__(self, filename="", load=False):
361 """Initialize the universe."""
364 self.default_origins = {}
366 self.private_files = []
367 self.reload_flag = False
368 self.setup_loglines = []
369 self.startdir = os.getcwd()
370 self.terminate_flag = False
373 possible_filenames = [
375 "/usr/local/mudpy/etc/mudpy.yaml",
376 "/usr/local/etc/mudpy.yaml",
377 "/etc/mudpy/mudpy.yaml",
380 for filename in possible_filenames:
381 if os.access(filename, os.R_OK):
383 if not os.path.isabs(filename):
384 filename = os.path.join(self.startdir, filename)
385 self.filename = filename
390 """Load universe data from persistent storage."""
392 # the files dict must exist and filename needs to be read-only
396 self.filename in self.files and self.files[
401 # clear out all read-only files
402 if hasattr(self, "files"):
403 for data_filename in list(self.files.keys()):
404 if not self.files[data_filename].is_writeable():
405 del self.files[data_filename]
407 # start loading from the initial file
408 mudpy.data.DataFile(self.filename, self)
410 # make a list of inactive avatars
411 inactive_avatars = []
412 for account in self.categories["account"].values():
413 inactive_avatars += [
414 (self.contents[x]) for x in account.getlist("avatars")
416 for user in self.userlist:
417 if user.avatar in inactive_avatars:
418 inactive_avatars.remove(user.avatar)
420 # go through all elements to clear out inactive avatar locations
421 for element in self.contents.values():
422 area = element.get("location")
423 if element in inactive_avatars and area:
424 if area in self.contents and element.key in self.contents[
427 del self.contents[area].contents[element.key]
428 element.set("default_location", area)
429 element.remove_facet("location")
431 # another pass to straighten out all the element contents
432 for element in self.contents.values():
433 element.update_location()
434 element.clean_contents()
437 """Create a new, empty Universe (the Big Bang)."""
438 new_universe = Universe()
439 for attribute in vars(self).keys():
440 exec("new_universe." + attribute + " = self." + attribute)
441 new_universe.reload_flag = False
446 """Save the universe to persistent storage."""
447 for key in self.files:
448 self.files[key].save()
450 def initialize_server_socket(self):
451 """Create and open the listening socket."""
453 # need to know the local address and port number for the listener
454 host = self.categories["internal"]["network"].get("host")
455 port = self.categories["internal"]["network"].get("port")
457 # if no host was specified, bind to all local addresses (preferring
465 # figure out if this is ipv4 or v6
466 family = socket.getaddrinfo(host, port)[0][0]
467 if family is socket.AF_INET6 and not socket.has_ipv6:
468 log("No support for IPv6 address %s (use IPv4 instead)." % host)
470 # create a new stream-type socket object
471 self.listening_socket = socket.socket(family, socket.SOCK_STREAM)
473 # set the socket options to allow existing open ones to be
474 # reused (fixes a bug where the server can't bind for a minute
475 # when restarting on linux systems)
476 self.listening_socket.setsockopt(
477 socket.SOL_SOCKET, socket.SO_REUSEADDR, 1
480 # bind the socket to to our desired server ipa and port
481 self.listening_socket.bind((host, port))
483 # disable blocking so we can proceed whether or not we can
485 self.listening_socket.setblocking(0)
487 # start listening on the socket
488 self.listening_socket.listen(1)
490 # note that we're now ready for user connections
492 "Listening for Telnet connections on: " +
493 host + ":" + str(port)
497 """Convenience method to get the elapsed time counter."""
498 return self.categories["internal"]["counters"].get("elapsed")
503 """This is a connected user."""
506 """Default values for the in-memory user variables."""
509 self.authenticated = False
512 self.connection = None
514 self.input_queue = []
515 self.last_address = ""
516 self.last_input = universe.get_time()
517 self.menu_choices = {}
518 self.menu_seen = False
519 self.negotiation_pause = 0
520 self.output_queue = []
521 self.partial_input = b""
522 self.password_tries = 0
523 self.state = "initial"
527 """Log, close the connection and remove."""
529 name = self.account.get("name")
533 message = "User " + name
535 message = "An unnamed user"
536 message += " logged out."
538 self.deactivate_avatar()
539 self.connection.close()
542 def check_idle(self):
543 """Warn or disconnect idle users as appropriate."""
544 idletime = universe.get_time() - self.last_input
545 linkdead_dict = universe.categories["internal"]["time"].get(
548 if self.state in linkdead_dict:
549 linkdead_state = self.state
551 linkdead_state = "default"
552 if idletime > linkdead_dict[linkdead_state]:
554 "$(eol)$(red)You've done nothing for far too long... goodbye!"
559 logline = "Disconnecting "
560 if self.account and self.account.get("name"):
561 logline += self.account.get("name")
563 logline += "an unknown user"
564 logline += (" after idling too long in the " + self.state
567 self.state = "disconnecting"
568 self.menu_seen = False
569 idle_dict = universe.categories["internal"]["time"].get("idle")
570 if self.state in idle_dict:
571 idle_state = self.state
573 idle_state = "default"
574 if idletime == idle_dict[idle_state]:
576 "$(eol)$(red)If you continue to be unproductive, "
577 + "you'll be shown the door...$(nrm)$(eol)"
581 """Save, load a new user and relocate the connection."""
583 # get out of the list
586 # create a new user object
589 # set everything equivalent
590 for attribute in vars(self).keys():
591 exec("new_user." + attribute + " = self." + attribute)
593 # the avatar needs a new owner
595 new_user.avatar.owner = new_user
598 universe.userlist.append(new_user)
600 # get rid of the old user object
603 def replace_old_connections(self):
604 """Disconnect active users with the same name."""
606 # the default return value
609 # iterate over each user in the list
610 for old_user in universe.userlist:
612 # the name is the same but it's not us
615 ) and old_user.account and old_user.account.get(
617 ) == self.account.get(
619 ) and old_user is not self:
623 "User " + self.account.get(
625 ) + " reconnected--closing old connection to "
626 + old_user.address + ".",
630 "$(eol)$(red)New connection from " + self.address
631 + ". Terminating old connection...$(nrm)$(eol)",
636 # close the old connection
637 old_user.connection.close()
639 # replace the old connection with this one
641 "$(eol)$(red)Taking over old connection from "
642 + old_user.address + ".$(nrm)"
644 old_user.connection = self.connection
645 old_user.last_address = old_user.address
646 old_user.address = self.address
648 # take this one out of the list and delete
654 # true if an old connection was replaced, false if not
657 def authenticate(self):
658 """Flag the user as authenticated and disconnect duplicates."""
659 if self.state is not "authenticated":
660 log("User " + self.account.get("name") + " logged in.", 2)
661 self.authenticated = True
662 if self.account.subkey in universe.categories[
669 self.account.set("administrator", "True")
672 """Send the user their current menu."""
673 if not self.menu_seen:
674 self.menu_choices = get_menu_choices(self)
676 get_menu(self.state, self.error, self.menu_choices),
680 self.menu_seen = True
682 self.adjust_echoing()
684 def adjust_echoing(self):
685 """Adjust echoing to match state menu requirements."""
686 if mudpy.telnet.is_enabled(self, mudpy.telnet.TELOPT_ECHO,
688 if menu_echo_on(self.state):
689 mudpy.telnet.disable(self, mudpy.telnet.TELOPT_ECHO,
691 elif not menu_echo_on(self.state):
692 mudpy.telnet.enable(self, mudpy.telnet.TELOPT_ECHO,
696 """Remove a user from the list of connected users."""
697 universe.userlist.remove(self)
707 add_terminator=False,
710 """Send arbitrary text to a connected user."""
712 # unless raw mode is on, clean it up all nice and pretty
715 # strip extra $(eol) off if present
716 while output.startswith("$(eol)"):
718 while output.endswith("$(eol)"):
720 extra_lines = output.find("$(eol)$(eol)$(eol)")
721 while extra_lines > -1:
722 output = output[:extra_lines] + output[extra_lines + 6:]
723 extra_lines = output.find("$(eol)$(eol)$(eol)")
725 # start with a newline, append the message, then end
726 # with the optional eol string passed to this function
727 # and the ansi escape to return to normal text
728 if not just_prompt and prepend_padding:
729 if (not self.output_queue or not
730 self.output_queue[-1].endswith(b"\r\n")):
731 output = "$(eol)" + output
732 elif not self.output_queue[-1].endswith(
734 ) and not self.output_queue[-1].endswith(
737 output = "$(eol)" + output
738 output += eol + chr(27) + "[0m"
740 # tack on a prompt if active
741 if self.state == "active":
746 mode = self.avatar.get("mode")
748 output += "(" + mode + ") "
750 # find and replace macros in the output
751 output = replace_macros(self, output)
753 # wrap the text at the client's width (min 40, 0 disables)
755 if self.columns < 40:
759 output = wrap_ansi_text(output, wrap)
761 # if supported by the client, encode it utf-8
762 if mudpy.telnet.is_enabled(self, mudpy.telnet.TELOPT_BINARY,
764 encoded_output = output.encode("utf-8")
766 # otherwise just send ascii
768 encoded_output = output.encode("ascii", "replace")
770 # end with a terminator if requested
771 if add_prompt or add_terminator:
772 if mudpy.telnet.is_enabled(
773 self, mudpy.telnet.TELOPT_EOR, mudpy.telnet.US):
774 encoded_output += mudpy.telnet.telnet_proto(
775 mudpy.telnet.IAC, mudpy.telnet.EOR)
776 elif not mudpy.telnet.is_enabled(
777 self, mudpy.telnet.TELOPT_SGA, mudpy.telnet.US):
778 encoded_output += mudpy.telnet.telnet_proto(
779 mudpy.telnet.IAC, mudpy.telnet.GA)
781 # and tack it onto the queue
782 self.output_queue.append(encoded_output)
784 # if this is urgent, flush all pending output
788 # just dump raw bytes as requested
790 self.output_queue.append(output)
794 """All the things to do to the user per increment."""
796 # if the world is terminating, disconnect
797 if universe.terminate_flag:
798 self.state = "disconnecting"
799 self.menu_seen = False
801 # check for an idle connection and act appropriately
805 # if output is paused, decrement the counter
806 if self.state == "initial":
807 if self.negotiation_pause:
808 self.negotiation_pause -= 1
810 self.state = "entering_account_name"
812 # show the user a menu as needed
813 elif not self.state == "active":
816 # flush any pending output in the queue
819 # disconnect users with the appropriate state
820 if self.state == "disconnecting":
823 # check for input and add it to the queue
826 # there is input waiting in the queue
828 handle_user_input(self)
831 """Try to send the last item in the queue and remove it."""
832 if self.output_queue:
834 self.connection.send(self.output_queue[0])
835 del self.output_queue[0]
836 except BrokenPipeError:
837 if self.account and self.account.get("name"):
838 account = self.account.get("name")
840 account = "an unknown user"
841 log("Broken pipe sending to %s." % account, 7)
842 self.state = "disconnecting"
844 def enqueue_input(self):
845 """Process and enqueue any new input."""
847 # check for some input
849 raw_input = self.connection.recv(1024)
850 except (BlockingIOError, OSError):
856 # tack this on to any previous partial
857 self.partial_input += raw_input
859 # reply to and remove any IAC negotiation codes
860 mudpy.telnet.negotiate_telnet_options(self)
862 # separate multiple input lines
863 new_input_lines = self.partial_input.split(b"\n")
865 # if input doesn't end in a newline, replace the
866 # held partial input with the last line of it
867 if not self.partial_input.endswith(b"\n"):
868 self.partial_input = new_input_lines.pop()
870 # otherwise, chop off the extra null input and reset
871 # the held partial input
873 new_input_lines.pop()
874 self.partial_input = b""
876 # iterate over the remaining lines
877 for line in new_input_lines:
879 # strip off extra whitespace
882 # log non-printable characters remaining
883 if mudpy.telnet.is_enabled(self, mudpy.telnet.TELOPT_BINARY,
885 asciiline = b"".join(
886 filter(lambda x: b" " <= x <= b"~", line))
887 if line != asciiline:
888 logline = "Non-ASCII characters from "
889 if self.account and self.account.get("name"):
890 logline += self.account.get("name") + ": "
892 logline += "unknown user: "
893 logline += repr(line)
898 line = line.decode("utf-8")
899 except UnicodeDecodeError:
900 logline = "Non-UTF-8 characters from "
901 if self.account and self.account.get("name"):
902 logline += self.account.get("name") + ": "
904 logline += "unknown user: "
905 logline += repr(line)
909 line = unicodedata.normalize("NFKC", line)
911 # put on the end of the queue
912 self.input_queue.append(line)
914 def new_avatar(self):
915 """Instantiate a new, unconfigured avatar for this user."""
917 while "avatar:" + self.account.get("name") + ":" + str(
919 ) in universe.categories["actor"].keys():
921 self.avatar = Element(
922 "actor:avatar:" + self.account.get("name") + ":" + str(
927 self.avatar.append("inherit", "archetype:avatar")
928 self.account.append("avatars", self.avatar.key)
930 def delete_avatar(self, avatar):
931 """Remove an avatar from the world and from the user's list."""
932 if self.avatar is universe.contents[avatar]:
934 universe.contents[avatar].destroy()
935 avatars = self.account.get("avatars")
936 avatars.remove(avatar)
937 self.account.set("avatars", avatars)
939 def activate_avatar_by_index(self, index):
940 """Enter the world with a particular indexed avatar."""
941 self.avatar = universe.contents[
942 self.account.get("avatars")[index]]
943 self.avatar.owner = self
944 self.state = "active"
945 self.avatar.go_home()
947 def deactivate_avatar(self):
948 """Have the active avatar leave the world."""
950 current = self.avatar.get("location")
952 self.avatar.set("default_location", current)
953 self.avatar.echo_to_location(
954 "You suddenly wonder where " + self.avatar.get(
958 del universe.contents[current].contents[self.avatar.key]
959 self.avatar.remove_facet("location")
960 self.avatar.owner = None
964 """Destroy the user and associated avatars."""
965 for avatar in self.account.get("avatars"):
966 self.delete_avatar(avatar)
967 self.account.destroy()
969 def list_avatar_names(self):
970 """List names of assigned avatars."""
972 universe.contents[avatar].get(
974 ) for avatar in self.account.getlist("avatars")
978 def broadcast(message, add_prompt=True):
979 """Send a message to all connected users."""
980 for each_user in universe.userlist:
981 each_user.send("$(eol)" + message, add_prompt=add_prompt)
984 def log(message, level=0):
987 # a couple references we need
988 file_name = universe.categories["internal"]["logging"].get("file")
989 max_log_lines = universe.categories["internal"]["logging"].get(
992 syslog_name = universe.categories["internal"]["logging"].get("syslog")
993 timestamp = time.asctime()[4:19]
995 # turn the message into a list of lines
997 lambda x: x != "", [(x.rstrip()) for x in message.split("\n")]
1000 # send the timestamp and line to a file
1002 if not os.path.isabs(file_name):
1003 file_name = os.path.join(universe.startdir, file_name)
1004 file_descriptor = codecs.open(file_name, "a", "utf-8")
1006 file_descriptor.write(timestamp + " " + line + "\n")
1007 file_descriptor.flush()
1008 file_descriptor.close()
1010 # send the timestamp and line to standard output
1011 if universe.categories["internal"]["logging"].get("stdout"):
1013 print(timestamp + " " + line)
1015 # send the line to the system log
1018 syslog_name.encode("utf-8"),
1020 syslog.LOG_INFO | syslog.LOG_DAEMON
1026 # display to connected administrators
1027 for user in universe.userlist:
1028 if user.state == "active" and user.account.get(
1030 ) and user.account.get("loglevel", 0) <= level:
1031 # iterate over every line in the message
1035 "$(bld)$(red)" + timestamp + " "
1036 + line.replace("$(", "$_(") + "$(nrm)$(eol)")
1037 user.send(full_message, flush=True)
1039 # add to the recent log list
1041 while 0 < len(universe.loglines) >= max_log_lines:
1042 del universe.loglines[0]
1043 universe.loglines.append((level, timestamp + " " + line))
1046 def get_loglines(level, start, stop):
1047 """Return a specific range of loglines filtered by level."""
1049 # filter the log lines
1050 loglines = filter(lambda x: x[0] >= level, universe.loglines)
1052 # we need these in several places
1053 total_count = str(len(universe.loglines))
1054 filtered_count = len(loglines)
1056 # don't proceed if there are no lines
1059 # can't start before the begining or at the end
1060 if start > filtered_count:
1061 start = filtered_count
1065 # can't stop before we start
1072 message = "There are " + str(total_count)
1073 message += " log lines in memory and " + str(filtered_count)
1074 message += " at or above level " + str(level) + "."
1075 message += " The matching lines from " + str(stop) + " to "
1076 message += str(start) + " are:$(eol)$(eol)"
1078 # add the text from the selected lines
1080 range_lines = loglines[-start:-(stop - 1)]
1082 range_lines = loglines[-start:]
1083 for line in range_lines:
1084 message += " (" + str(line[0]) + ") " + line[1].replace(
1088 # there were no lines
1090 message = "None of the " + str(total_count)
1091 message += " lines in memory matches your request."
1097 def glyph_columns(character):
1098 """Convenience function to return the column width of a glyph."""
1099 if unicodedata.east_asian_width(character) in "FW":
1105 def wrap_ansi_text(text, width):
1106 """Wrap text with arbitrary width while ignoring ANSI colors."""
1108 # the current position in the entire text string, including all
1109 # characters, printable or otherwise
1112 # the current text position relative to the begining of the line,
1113 # ignoring color escape sequences
1116 # the absolute position of the most recent whitespace character
1119 # whether the current character is part of a color escape sequence
1122 # normalize any potentially composited unicode before we count it
1123 text = unicodedata.normalize("NFKC", text)
1125 # iterate over each character from the begining of the text
1126 for each_character in text:
1128 # the current character is the escape character
1129 if each_character == "\x1b" and not escape:
1132 # the current character is within an escape sequence
1135 # the current character is m, which terminates the
1137 if each_character == "m":
1140 # the current character is a newline, so reset the relative
1141 # position (start a new line)
1142 elif each_character == "\n":
1144 last_whitespace = abs_pos
1146 # the current character meets the requested maximum line width,
1147 # so we need to backtrack and find a space at which to wrap;
1148 # special care is taken to avoid an off-by-one in case the
1149 # current character is a double-width glyph
1150 elif each_character != "\r" and (
1151 rel_pos >= width or (
1152 rel_pos >= width - 1 and glyph_columns(
1158 # it's always possible we landed on whitespace
1159 if unicodedata.category(each_character) in ("Cc", "Zs"):
1160 last_whitespace = abs_pos
1162 # insert an eol in place of the space
1163 text = text[:last_whitespace] + "\r\n" + text[last_whitespace + 1:]
1165 # increase the absolute position because an eol is two
1166 # characters but the space it replaced was only one
1169 # now we're at the begining of a new line, plus the
1170 # number of characters wrapped from the previous line
1172 for remaining_characters in text[last_whitespace:abs_pos]:
1173 rel_pos += glyph_columns(remaining_characters)
1175 # as long as the character is not a carriage return and the
1176 # other above conditions haven't been met, count it as a
1177 # printable character
1178 elif each_character != "\r":
1179 rel_pos += glyph_columns(each_character)
1180 if unicodedata.category(each_character) in ("Cc", "Zs"):
1181 last_whitespace = abs_pos
1183 # increase the absolute position for every character
1186 # return the newly-wrapped text
1190 def weighted_choice(data):
1191 """Takes a dict weighted by value and returns a random key."""
1193 # this will hold our expanded list of keys from the data
1196 # create the expanded list of keys
1197 for key in data.keys():
1198 for count in range(data[key]):
1199 expanded.append(key)
1201 # return one at random
1202 return random.choice(expanded)
1206 """Returns a random character name."""
1208 # the vowels and consonants needed to create romaji syllables
1237 # this dict will hold our weighted list of syllables
1240 # generate the list with an even weighting
1241 for consonant in consonants:
1242 for vowel in vowels:
1243 syllables[consonant + vowel] = 1
1245 # we'll build the name into this string
1248 # create a name of random length from the syllables
1249 for syllable in range(random.randrange(2, 6)):
1250 name += weighted_choice(syllables)
1252 # strip any leading quotemark, capitalize and return the name
1253 return name.strip("'").capitalize()
1256 def replace_macros(user, text, is_input=False):
1257 """Replaces macros in text output."""
1259 # third person pronouns
1261 "female": {"obj": "her", "pos": "hers", "sub": "she"},
1262 "male": {"obj": "him", "pos": "his", "sub": "he"},
1263 "neuter": {"obj": "it", "pos": "its", "sub": "it"}
1266 # a dict of replacement macros
1269 "bld": chr(27) + "[1m",
1270 "nrm": chr(27) + "[0m",
1271 "blk": chr(27) + "[30m",
1272 "blu": chr(27) + "[34m",
1273 "cyn": chr(27) + "[36m",
1274 "grn": chr(27) + "[32m",
1275 "mgt": chr(27) + "[35m",
1276 "red": chr(27) + "[31m",
1277 "yel": chr(27) + "[33m",
1280 # add dynamic macros where possible
1282 account_name = user.account.get("name")
1284 macros["account"] = account_name
1286 avatar_gender = user.avatar.get("gender")
1288 macros["tpop"] = pronouns[avatar_gender]["obj"]
1289 macros["tppp"] = pronouns[avatar_gender]["pos"]
1290 macros["tpsp"] = pronouns[avatar_gender]["sub"]
1295 # find and replace per the macros dict
1296 macro_start = text.find("$(")
1297 if macro_start == -1:
1299 macro_end = text.find(")", macro_start) + 1
1300 macro = text[macro_start + 2:macro_end - 1]
1301 if macro in macros.keys():
1302 replacement = macros[macro]
1304 # this is how we handle local file inclusion (dangerous!)
1305 elif macro.startswith("inc:"):
1306 incfile = mudpy.data.find_file(macro[4:], universe=universe)
1307 if os.path.exists(incfile):
1308 incfd = codecs.open(incfile, "r", "utf-8")
1311 if line.endswith("\n") and not line.endswith("\r\n"):
1312 line = line.replace("\n", "\r\n")
1314 # lose the trailing eol
1315 replacement = replacement[:-2]
1318 log("Couldn't read included " + incfile + " file.", 6)
1320 # if we get here, log and replace it with null
1324 log("Unexpected replacement macro " +
1325 macro + " encountered.", 6)
1327 # and now we act on the replacement
1328 text = text.replace("$(" + macro + ")", replacement)
1330 # replace the look-like-a-macro sequence
1331 text = text.replace("$_(", "$(")
1336 def escape_macros(text):
1337 """Escapes replacement macros in text."""
1338 return text.replace("$(", "$_(")
1341 def first_word(text, separator=" "):
1342 """Returns a tuple of the first word and the rest."""
1344 if text.find(separator) > 0:
1345 return text.split(separator, 1)
1353 """The things which should happen on each pulse, aside from reloads."""
1355 # open the listening socket if it hasn't been already
1356 if not hasattr(universe, "listening_socket"):
1357 universe.initialize_server_socket()
1359 # assign a user if a new connection is waiting
1360 user = check_for_connection(universe.listening_socket)
1362 universe.userlist.append(user)
1364 # iterate over the connected users
1365 for user in universe.userlist:
1368 # add an element for counters if it doesn't exist
1369 if "counters" not in universe.categories["internal"]:
1370 universe.categories["internal"]["counters"] = Element(
1371 "internal:counters", universe
1374 # update the log every now and then
1375 if not universe.categories["internal"]["counters"].get("mark"):
1376 log(str(len(universe.userlist)) + " connection(s)")
1377 universe.categories["internal"]["counters"].set(
1378 "mark", universe.categories["internal"]["time"].get(
1383 universe.categories["internal"]["counters"].set(
1384 "mark", universe.categories["internal"]["counters"].get(
1389 # periodically save everything
1390 if not universe.categories["internal"]["counters"].get("save"):
1392 universe.categories["internal"]["counters"].set(
1393 "save", universe.categories["internal"]["time"].get(
1398 universe.categories["internal"]["counters"].set(
1399 "save", universe.categories["internal"]["counters"].get(
1404 # pause for a configurable amount of time (decimal seconds)
1405 time.sleep(universe.categories["internal"]
1406 ["time"].get("increment"))
1408 # increase the elapsed increment counter
1409 universe.categories["internal"]["counters"].set(
1410 "elapsed", universe.categories["internal"]["counters"].get(
1417 """Reload all relevant objects."""
1418 for user in universe.userlist[:]:
1420 for element in universe.contents.values():
1421 if element.origin.is_writeable():
1426 def check_for_connection(listening_socket):
1427 """Check for a waiting connection and return a new user object."""
1429 # try to accept a new connection
1431 connection, address = listening_socket.accept()
1432 except BlockingIOError:
1435 # note that we got one
1436 log("Connection from " + address[0], 2)
1438 # disable blocking so we can proceed whether or not we can send/receive
1439 connection.setblocking(0)
1441 # create a new user object
1444 # associate this connection with it
1445 user.connection = connection
1447 # set the user's ipa from the connection's ipa
1448 user.address = address[0]
1450 # let the client know we WILL EOR (RFC 885)
1451 mudpy.telnet.enable(user, mudpy.telnet.TELOPT_EOR, mudpy.telnet.US)
1452 user.negotiation_pause = 2
1454 # return the new user object
1458 def get_menu(state, error=None, choices=None):
1459 """Show the correct menu text to a user."""
1461 # make sure we don't reuse a mutable sequence by default
1465 # get the description or error text
1466 message = get_menu_description(state, error)
1468 # get menu choices for the current state
1469 message += get_formatted_menu_choices(state, choices)
1471 # try to get a prompt, if it was defined
1472 message += get_menu_prompt(state)
1474 # throw in the default choice, if it exists
1475 message += get_formatted_default_menu_choice(state)
1477 # display a message indicating if echo is off
1478 message += get_echo_message(state)
1480 # return the assembly of various strings defined above
1484 def menu_echo_on(state):
1485 """True if echo is on, false if it is off."""
1486 return universe.categories["menu"][state].get("echo", True)
1489 def get_echo_message(state):
1490 """Return a message indicating that echo is off."""
1491 if menu_echo_on(state):
1494 return "(won't echo) "
1497 def get_default_menu_choice(state):
1498 """Return the default choice for a menu."""
1499 return universe.categories["menu"][state].get("default")
1502 def get_formatted_default_menu_choice(state):
1503 """Default menu choice foratted for inclusion in a prompt string."""
1504 default_choice = get_default_menu_choice(state)
1506 return "[$(red)" + default_choice + "$(nrm)] "
1511 def get_menu_description(state, error):
1512 """Get the description or error text."""
1514 # an error condition was raised by the handler
1517 # try to get an error message matching the condition
1519 description = universe.categories[
1520 "menu"][state].get("error_" + error)
1522 description = "That is not a valid choice..."
1523 description = "$(red)" + description + "$(nrm)"
1525 # there was no error condition
1528 # try to get a menu description for the current state
1529 description = universe.categories["menu"][state].get("description")
1531 # return the description or error message
1533 description += "$(eol)$(eol)"
1537 def get_menu_prompt(state):
1538 """Try to get a prompt, if it was defined."""
1539 prompt = universe.categories["menu"][state].get("prompt")
1545 def get_menu_choices(user):
1546 """Return a dict of choice:meaning."""
1547 menu = universe.categories["menu"][user.state]
1548 create_choices = menu.get("create")
1550 choices = eval(create_choices)
1556 for facet in menu.facets():
1557 if facet.startswith("demand_") and not eval(
1558 universe.categories["menu"][user.state].get(facet)
1560 ignores.append(facet.split("_", 2)[1])
1561 elif facet.startswith("create_"):
1562 creates[facet] = facet.split("_", 2)[1]
1563 elif facet.startswith("choice_"):
1564 options[facet] = facet.split("_", 2)[1]
1565 for facet in creates.keys():
1566 if not creates[facet] in ignores:
1567 choices[creates[facet]] = eval(menu.get(facet))
1568 for facet in options.keys():
1569 if not options[facet] in ignores:
1570 choices[options[facet]] = menu.get(facet)
1574 def get_formatted_menu_choices(state, choices):
1575 """Returns a formatted string of menu choices."""
1577 choice_keys = list(choices.keys())
1579 for choice in choice_keys:
1580 choice_output += " [$(red)" + choice + "$(nrm)] " + choices[
1584 choice_output += "$(eol)"
1585 return choice_output
1588 def get_menu_branches(state):
1589 """Return a dict of choice:branch."""
1591 for facet in universe.categories["menu"][state].facets():
1592 if facet.startswith("branch_"):
1594 facet.split("_", 2)[1]
1595 ] = universe.categories["menu"][state].get(facet)
1599 def get_default_branch(state):
1600 """Return the default branch."""
1601 return universe.categories["menu"][state].get("branch")
1604 def get_choice_branch(user, choice):
1605 """Returns the new state matching the given choice."""
1606 branches = get_menu_branches(user.state)
1607 if choice in branches.keys():
1608 return branches[choice]
1609 elif choice in user.menu_choices.keys():
1610 return get_default_branch(user.state)
1615 def get_menu_actions(state):
1616 """Return a dict of choice:branch."""
1618 for facet in universe.categories["menu"][state].facets():
1619 if facet.startswith("action_"):
1621 facet.split("_", 2)[1]
1622 ] = universe.categories["menu"][state].get(facet)
1626 def get_default_action(state):
1627 """Return the default action."""
1628 return universe.categories["menu"][state].get("action")
1631 def get_choice_action(user, choice):
1632 """Run any indicated script for the given choice."""
1633 actions = get_menu_actions(user.state)
1634 if choice in actions.keys():
1635 return actions[choice]
1636 elif choice in user.menu_choices.keys():
1637 return get_default_action(user.state)
1642 def handle_user_input(user):
1643 """The main handler, branches to a state-specific handler."""
1645 # if the user's client echo is off, send a blank line for aesthetics
1646 if mudpy.telnet.is_enabled(user, mudpy.telnet.TELOPT_ECHO,
1648 user.send("", add_prompt=False, prepend_padding=False)
1650 # check to make sure the state is expected, then call that handler
1651 if "handler_" + user.state in globals():
1652 exec("handler_" + user.state + "(user)")
1654 generic_menu_handler(user)
1656 # since we got input, flag that the menu/prompt needs to be redisplayed
1657 user.menu_seen = False
1659 # update the last_input timestamp while we're at it
1660 user.last_input = universe.get_time()
1663 def generic_menu_handler(user):
1664 """A generic menu choice handler."""
1666 # get a lower-case representation of the next line of input
1667 if user.input_queue:
1668 choice = user.input_queue.pop(0)
1670 choice = choice.lower()
1674 choice = get_default_menu_choice(user.state)
1675 if choice in user.menu_choices:
1676 exec(get_choice_action(user, choice))
1677 new_state = get_choice_branch(user, choice)
1679 user.state = new_state
1681 user.error = "default"
1684 def handler_entering_account_name(user):
1685 """Handle the login account name."""
1687 # get the next waiting line of input
1688 input_data = user.input_queue.pop(0)
1690 # did the user enter anything?
1693 # keep only the first word and convert to lower-case
1694 name = input_data.lower()
1696 # fail if there are non-alphanumeric characters
1697 if name != "".join(filter(
1698 lambda x: x >= "0" and x <= "9" or x >= "a" and x <= "z",
1700 user.error = "bad_name"
1702 # if that account exists, time to request a password
1703 elif name in universe.categories["account"]:
1704 user.account = universe.categories["account"][name]
1705 user.state = "checking_password"
1707 # otherwise, this could be a brand new user
1709 user.account = Element("account:" + name, universe)
1710 user.account.set("name", name)
1711 log("New user: " + name, 2)
1712 user.state = "checking_new_account_name"
1714 # if the user entered nothing for a name, then buhbye
1716 user.state = "disconnecting"
1719 def handler_checking_password(user):
1720 """Handle the login account password."""
1722 # get the next waiting line of input
1723 input_data = user.input_queue.pop(0)
1725 # does the hashed input equal the stored hash?
1726 if mudpy.password.verify(input_data, user.account.get("passhash")):
1728 # if so, set the username and load from cold storage
1729 if not user.replace_old_connections():
1731 user.state = "main_utility"
1733 # if at first your hashes don't match, try, try again
1734 elif user.password_tries < universe.categories[
1741 user.password_tries += 1
1742 user.error = "incorrect"
1744 # we've exceeded the maximum number of password failures, so disconnect
1747 "$(eol)$(red)Too many failed password attempts...$(nrm)$(eol)"
1749 user.state = "disconnecting"
1752 def handler_entering_new_password(user):
1753 """Handle a new password entry."""
1755 # get the next waiting line of input
1756 input_data = user.input_queue.pop(0)
1758 # make sure the password is strong--at least one upper, one lower and
1759 # one digit, seven or more characters in length
1760 if len(input_data) > 6 and len(
1761 list(filter(lambda x: x >= "0" and x <= "9", input_data))
1763 list(filter(lambda x: x >= "A" and x <= "Z", input_data))
1765 list(filter(lambda x: x >= "a" and x <= "z", input_data))
1768 # hash and store it, then move on to verification
1769 user.account.set("passhash", mudpy.password.create(input_data))
1770 user.state = "verifying_new_password"
1772 # the password was weak, try again if you haven't tried too many times
1773 elif user.password_tries < universe.categories[
1780 user.password_tries += 1
1783 # too many tries, so adios
1786 "$(eol)$(red)Too many failed password attempts...$(nrm)$(eol)"
1788 user.account.destroy()
1789 user.state = "disconnecting"
1792 def handler_verifying_new_password(user):
1793 """Handle the re-entered new password for verification."""
1795 # get the next waiting line of input
1796 input_data = user.input_queue.pop(0)
1798 # hash the input and match it to storage
1799 if mudpy.password.verify(input_data, user.account.get("passhash")):
1802 # the hashes matched, so go active
1803 if not user.replace_old_connections():
1804 user.state = "main_utility"
1806 # go back to entering the new password as long as you haven't tried
1808 elif user.password_tries < universe.categories[
1815 user.password_tries += 1
1816 user.error = "differs"
1817 user.state = "entering_new_password"
1819 # otherwise, sayonara
1822 "$(eol)$(red)Too many failed password attempts...$(nrm)$(eol)"
1824 user.account.destroy()
1825 user.state = "disconnecting"
1828 def handler_active(user):
1829 """Handle input for active users."""
1831 # get the next waiting line of input
1832 input_data = user.input_queue.pop(0)
1837 # split out the command and parameters
1839 mode = actor.get("mode")
1840 if mode and input_data.startswith("!"):
1841 command_name, parameters = first_word(input_data[1:])
1842 elif mode == "chat":
1843 command_name = "say"
1844 parameters = input_data
1846 command_name, parameters = first_word(input_data)
1848 # lowercase the command
1849 command_name = command_name.lower()
1851 # the command matches a command word for which we have data
1852 if command_name in universe.categories["command"]:
1853 command = universe.categories["command"][command_name]
1857 # if it's allowed, do it
1858 if actor.can_run(command):
1859 exec(command.get("action"))
1861 # otherwise, give an error
1863 command_error(actor, input_data)
1865 # if no input, just idle back with a prompt
1867 user.send("", just_prompt=True)
1870 def command_halt(actor, parameters):
1871 """Halt the world."""
1874 # see if there's a message or use a generic one
1876 message = "Halting: " + parameters
1878 message = "User " + actor.owner.account.get(
1880 ) + " halted the world."
1883 broadcast(message, add_prompt=False)
1886 # set a flag to terminate the world
1887 universe.terminate_flag = True
1890 def command_reload(actor):
1891 """Reload all code modules, configs and data."""
1894 # let the user know and log
1895 actor.send("Reloading all code modules, configs and data.")
1898 actor.owner.account.get("name") + " reloaded the world.",
1902 # set a flag to reload
1903 universe.reload_flag = True
1906 def command_quit(actor):
1907 """Leave the world and go back to the main menu."""
1909 actor.owner.state = "main_utility"
1910 actor.owner.deactivate_avatar()
1913 def command_help(actor, parameters):
1914 """List available commands and provide help for commands."""
1916 # did the user ask for help on a specific command word?
1917 if parameters and actor.owner:
1919 # is the command word one for which we have data?
1920 if parameters in universe.categories["command"]:
1921 command = universe.categories["command"][parameters]
1925 # only for allowed commands
1926 if actor.can_run(command):
1928 # add a description if provided
1929 description = command.get("description")
1931 description = "(no short description provided)"
1932 if command.get("administrative"):
1936 output += parameters + "$(nrm) - " + description + "$(eol)$(eol)"
1938 # add the help text if provided
1939 help_text = command.get("help")
1941 help_text = "No help is provided for this command."
1944 # list related commands
1945 see_also = command.get("see_also")
1947 really_see_also = ""
1948 for item in see_also:
1949 if item in universe.categories["command"]:
1950 command = universe.categories["command"][item]
1951 if actor.can_run(command):
1953 really_see_also += ", "
1954 if command.get("administrative"):
1955 really_see_also += "$(red)"
1957 really_see_also += "$(grn)"
1958 really_see_also += item + "$(nrm)"
1960 output += "$(eol)$(eol)See also: " + really_see_also
1962 # no data for the requested command word
1964 output = "That is not an available command."
1966 # no specific command word was indicated
1969 # give a sorted list of commands with descriptions if provided
1970 output = "These are the commands available to you:$(eol)$(eol)"
1971 sorted_commands = list(universe.categories["command"].keys())
1972 sorted_commands.sort()
1973 for item in sorted_commands:
1974 command = universe.categories["command"][item]
1975 if actor.can_run(command):
1976 description = command.get("description")
1978 description = "(no short description provided)"
1979 if command.get("administrative"):
1983 output += item + "$(nrm) - " + description + "$(eol)"
1984 output += ("$(eol)Enter \"help COMMAND\" for help on a command "
1985 "named \"COMMAND\".")
1987 # send the accumulated output to the user
1991 def command_move(actor, parameters):
1992 """Move the avatar in a given direction."""
1993 if parameters in universe.contents[actor.get("location")].portals():
1994 actor.move_direction(parameters)
1996 actor.send("You cannot go that way.")
1999 def command_look(actor, parameters):
2002 actor.send("You can't look at or in anything yet.")
2004 actor.look_at(actor.get("location"))
2007 def command_say(actor, parameters):
2008 """Speak to others in the same area."""
2010 # check for replacement macros and escape them
2011 parameters = escape_macros(parameters)
2013 # if the message is wrapped in quotes, remove them and leave contents
2015 if parameters.startswith("\"") and parameters.endswith("\""):
2016 message = parameters[1:-1]
2019 # otherwise, get rid of stray quote marks on the ends of the message
2021 message = parameters.strip("\"'`")
2024 # the user entered a message
2027 # match the punctuation used, if any, to an action
2028 actions = universe.categories["internal"]["language"].get(
2031 default_punctuation = (
2032 universe.categories["internal"]["language"].get(
2033 "default_punctuation"))
2035 for mark in actions.keys():
2036 if not literal and message.endswith(mark):
2037 action = actions[mark]
2040 # add punctuation if needed
2042 action = actions[default_punctuation]
2043 if message and not (
2044 literal or unicodedata.category(message[-1]) == "Po"
2046 message += default_punctuation
2048 # failsafe checks to avoid unwanted reformatting and null strings
2049 if message and not literal:
2051 # decapitalize the first letter to improve matching
2052 message = message[0].lower() + message[1:]
2054 # iterate over all words in message, replacing typos
2055 typos = universe.categories["internal"]["language"].get(
2058 words = message.split()
2059 for index in range(len(words)):
2061 while unicodedata.category(word[0]) == "Po":
2063 while unicodedata.category(word[-1]) == "Po":
2065 if word in typos.keys():
2066 words[index] = words[index].replace(word, typos[word])
2067 message = " ".join(words)
2069 # capitalize the first letter
2070 message = message[0].upper() + message[1:]
2074 actor.echo_to_location(
2075 actor.get("name") + " " + action + "s, \"" + message + "\""
2077 actor.send("You " + action + ", \"" + message + "\"")
2079 # there was no message
2081 actor.send("What do you want to say?")
2084 def command_chat(actor):
2085 """Toggle chat mode."""
2086 mode = actor.get("mode")
2088 actor.set("mode", "chat")
2089 actor.send("Entering chat mode (use $(grn)!chat$(nrm) to exit).")
2090 elif mode == "chat":
2091 actor.remove_facet("mode")
2092 actor.send("Exiting chat mode.")
2094 actor.send("Sorry, but you're already busy with something else!")
2097 def command_show(actor, parameters):
2098 """Show program data."""
2100 arguments = parameters.split()
2102 message = "What do you want to show?"
2103 elif arguments[0] == "time":
2104 message = universe.categories["internal"]["counters"].get(
2106 ) + " increments elapsed since the world was created."
2107 elif arguments[0] == "categories":
2108 message = "These are the element categories:$(eol)"
2109 categories = list(universe.categories.keys())
2111 for category in categories:
2112 message += "$(eol) $(grn)" + category + "$(nrm)"
2113 elif arguments[0] == "files":
2114 message = "These are the current files containing the universe:$(eol)"
2115 filenames = list(universe.files.keys())
2117 for filename in filenames:
2118 if universe.files[filename].is_writeable():
2122 message += ("$(eol) $(red)(" + status + ") $(grn)" + filename
2124 elif arguments[0] == "category":
2125 if len(arguments) != 2:
2126 message = "You must specify one category."
2127 elif arguments[1] in universe.categories:
2128 message = ("These are the elements in the \"" + arguments[1]
2129 + "\" category:$(eol)")
2132 universe.categories[arguments[1]][x].key
2133 ) for x in universe.categories[arguments[1]].keys()
2136 for element in elements:
2137 message += "$(eol) $(grn)" + element + "$(nrm)"
2139 message = "Category \"" + arguments[1] + "\" does not exist."
2140 elif arguments[0] == "file":
2141 if len(arguments) != 2:
2142 message = "You must specify one file."
2143 elif arguments[1] in universe.files:
2144 message = ("These are the elements in the \"" + arguments[1]
2146 elements = universe.files[arguments[1]].data.keys()
2148 for element in elements:
2149 message += "$(eol) $(grn)" + element + "$(nrm)"
2151 message = "Category \"" + arguments[1] + "\" does not exist."
2152 elif arguments[0] == "element":
2153 if len(arguments) != 2:
2154 message = "You must specify one element."
2155 elif arguments[1] in universe.contents:
2156 element = universe.contents[arguments[1]]
2157 message = ("These are the properties of the \"" + arguments[1]
2158 + "\" element (in \"" + element.origin.filename
2160 facets = element.facets()
2162 for facet in facets:
2163 message += ("$(eol) $(grn)" + facet + ": $(red)"
2164 + escape_macros(element.get(facet)) + "$(nrm)")
2166 message = "Element \"" + arguments[1] + "\" does not exist."
2167 elif arguments[0] == "result":
2168 if len(arguments) < 2:
2169 message = "You need to specify an expression."
2172 message = repr(eval(" ".join(arguments[1:])))
2173 except Exception as e:
2174 message = ("$(red)Your expression raised an exception...$(eol)"
2175 "$(eol)$(bld)%s$(nrm)" % e)
2176 elif arguments[0] == "log":
2177 if len(arguments) == 4:
2178 if re.match("^\d+$", arguments[3]) and int(arguments[3]) >= 0:
2179 stop = int(arguments[3])
2184 if len(arguments) >= 3:
2185 if re.match("^\d+$", arguments[2]) and int(arguments[2]) > 0:
2186 start = int(arguments[2])
2191 if len(arguments) >= 2:
2192 if (re.match("^\d+$", arguments[1])
2193 and 0 <= int(arguments[1]) <= 9):
2194 level = int(arguments[1])
2197 elif 0 <= actor.owner.account.get("loglevel") <= 9:
2198 level = actor.owner.account.get("loglevel")
2201 if level > -1 and start > -1 and stop > -1:
2202 message = get_loglines(level, start, stop)
2204 message = ("When specified, level must be 0-9 (default 1), "
2205 "start and stop must be >=1 (default 10 and 1).")
2207 message = "I don't know what \"" + parameters + "\" is."
2211 def command_create(actor, parameters):
2212 """Create an element if it does not exist."""
2214 message = "You must at least specify an element to create."
2215 elif not actor.owner:
2218 arguments = parameters.split()
2219 if len(arguments) == 1:
2220 arguments.append("")
2221 if len(arguments) == 2:
2222 element, filename = arguments
2223 if element in universe.contents:
2224 message = "The \"" + element + "\" element already exists."
2226 message = ("You create \"" +
2227 element + "\" within the universe.")
2228 logline = actor.owner.account.get(
2230 ) + " created an element: " + element
2232 logline += " in file " + filename
2233 if filename not in universe.files:
2235 " Warning: \"" + filename + "\" is not yet "
2236 "included in any other file and will not be read "
2237 "on startup unless this is remedied.")
2238 Element(element, universe, filename)
2240 elif len(arguments) > 2:
2241 message = "You can only specify an element and a filename."
2245 def command_destroy(actor, parameters):
2246 """Destroy an element if it exists."""
2249 message = "You must specify an element to destroy."
2251 if parameters not in universe.contents:
2252 message = "The \"" + parameters + "\" element does not exist."
2254 universe.contents[parameters].destroy()
2255 message = ("You destroy \"" + parameters
2256 + "\" within the universe.")
2258 actor.owner.account.get(
2260 ) + " destroyed an element: " + parameters,
2266 def command_set(actor, parameters):
2267 """Set a facet of an element."""
2269 message = "You must specify an element, a facet and a value."
2271 arguments = parameters.split(" ", 2)
2272 if len(arguments) == 1:
2273 message = ("What facet of element \"" + arguments[0]
2274 + "\" would you like to set?")
2275 elif len(arguments) == 2:
2276 message = ("What value would you like to set for the \"" +
2277 arguments[1] + "\" facet of the \"" + arguments[0]
2280 element, facet, value = arguments
2281 if element not in universe.contents:
2282 message = "The \"" + element + "\" element does not exist."
2284 universe.contents[element].set(facet, value)
2285 message = ("You have successfully (re)set the \"" + facet
2286 + "\" facet of element \"" + element
2287 + "\". Try \"show element " +
2288 element + "\" for verification.")
2292 def command_delete(actor, parameters):
2293 """Delete a facet from an element."""
2295 message = "You must specify an element and a facet."
2297 arguments = parameters.split(" ")
2298 if len(arguments) == 1:
2299 message = ("What facet of element \"" + arguments[0]
2300 + "\" would you like to delete?")
2301 elif len(arguments) != 2:
2302 message = "You may only specify an element and a facet."
2304 element, facet = arguments
2305 if element not in universe.contents:
2306 message = "The \"" + element + "\" element does not exist."
2307 elif facet not in universe.contents[element].facets():
2308 message = ("The \"" + element + "\" element has no \"" + facet
2311 universe.contents[element].remove_facet(facet)
2312 message = ("You have successfully deleted the \"" + facet
2313 + "\" facet of element \"" + element
2314 + "\". Try \"show element " +
2315 element + "\" for verification.")
2319 def command_error(actor, input_data):
2320 """Generic error for an unrecognized command word."""
2322 # 90% of the time use a generic error
2323 if random.randrange(10):
2324 message = "I'm not sure what \"" + input_data + "\" means..."
2326 # 10% of the time use the classic diku error
2328 message = "Arglebargle, glop-glyf!?!"
2330 # send the error message
2334 def daemonize(universe):
2335 """Fork and disassociate from everything."""
2337 # only if this is what we're configured to do
2338 if universe.contents["internal:process"].get("daemon"):
2340 # log before we start forking around, so the terminal gets the message
2341 log("Disassociating from the controlling terminal.")
2343 # fork off and die, so we free up the controlling terminal
2347 # switch to a new process group
2350 # fork some more, this time to free us from the old process group
2354 # reset the working directory so we don't needlessly tie up mounts
2357 # clear the file creation mask so we can bend it to our will later
2360 # redirect stdin/stdout/stderr and close off their former descriptors
2361 for stdpipe in range(3):
2363 sys.stdin = codecs.open("/dev/null", "r", "utf-8")
2364 sys.__stdin__ = codecs.open("/dev/null", "r", "utf-8")
2365 sys.stdout = codecs.open("/dev/null", "w", "utf-8")
2366 sys.stderr = codecs.open("/dev/null", "w", "utf-8")
2367 sys.__stdout__ = codecs.open("/dev/null", "w", "utf-8")
2368 sys.__stderr__ = codecs.open("/dev/null", "w", "utf-8")
2371 def create_pidfile(universe):
2372 """Write a file containing the current process ID."""
2373 pid = str(os.getpid())
2374 log("Process ID: " + pid)
2375 file_name = universe.contents["internal:process"].get("pidfile")
2377 if not os.path.isabs(file_name):
2378 file_name = os.path.join(universe.startdir, file_name)
2379 file_descriptor = codecs.open(file_name, "w", "utf-8")
2380 file_descriptor.write(pid + "\n")
2381 file_descriptor.flush()
2382 file_descriptor.close()
2385 def remove_pidfile(universe):
2386 """Remove the file containing the current process ID."""
2387 file_name = universe.contents["internal:process"].get("pidfile")
2389 if not os.path.isabs(file_name):
2390 file_name = os.path.join(universe.startdir, file_name)
2391 if os.access(file_name, os.W_OK):
2392 os.remove(file_name)
2395 def excepthook(excepttype, value, tracebackdata):
2396 """Handle uncaught exceptions."""
2398 # assemble the list of errors into a single string
2400 traceback.format_exception(excepttype, value, tracebackdata)
2403 # try to log it, if possible
2406 except Exception as e:
2407 # try to write it to stderr, if possible
2408 sys.stderr.write(message + "\nException while logging...\n%s" % e)
2411 def sighook(what, where):
2412 """Handle external signals."""
2415 message = "Caught signal: "
2417 # for a hangup signal
2418 if what == signal.SIGHUP:
2419 message += "hangup (reloading)"
2420 universe.reload_flag = True
2422 # for a terminate signal
2423 elif what == signal.SIGTERM:
2424 message += "terminate (halting)"
2425 universe.terminate_flag = True
2427 # catchall for unexpected signals
2429 message += str(what) + " (unhandled)"
2435 def override_excepthook():
2436 """Redefine sys.excepthook with our own."""
2437 sys.excepthook = excepthook
2440 def assign_sighook():
2441 """Assign a customized handler for some signals."""
2442 signal.signal(signal.SIGHUP, sighook)
2443 signal.signal(signal.SIGTERM, sighook)
2447 """This contains functions to be performed when starting the engine."""
2449 # see if a configuration file was specified
2450 if len(sys.argv) > 1:
2451 conffile = sys.argv[1]
2457 universe = Universe(conffile, True)
2459 # log an initial message
2460 log("Started mudpy with command line: " + " ".join(sys.argv))
2462 # fork and disassociate
2465 # override the default exception handler so we get logging first thing
2466 override_excepthook()
2468 # set up custom signal handlers
2472 create_pidfile(universe)
2474 # pass the initialized universe back
2479 """These are functions performed when shutting down the engine."""
2481 # the loop has terminated, so save persistent data
2484 # log a final message
2485 log("Shutting down now.")
2487 # get rid of the pidfile
2488 remove_pidfile(universe)