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 not self.has_facet(facet) or not self.get(facet) == value:
159 if self.key not in self.origin.data:
160 self.origin.data[self.key] = {}
161 self.origin.data[self.key][facet] = value
163 node = ".".join((self.key, facet))
164 self.origin.data[node] = value
165 self.facethash[node] = self.origin.data[node]
166 self.origin.modified = True
168 def append(self, facet, value):
169 """Append value to a list."""
170 newlist = self.get(facet)
173 if type(newlist) is not list:
174 newlist = list(newlist)
175 newlist.append(value)
176 self.set(facet, newlist)
186 add_terminator=False,
189 """Convenience method to pass messages to an owner."""
202 def can_run(self, command):
203 """Check if the user can run this command object."""
205 # has to be in the commands category
206 if command not in self.universe.categories["command"].values():
209 # avatars of administrators can run any command
210 elif self.owner and self.owner.account.get("administrator"):
213 # everyone can run non-administrative commands
214 elif not command.get("administrative"):
217 # otherwise the command cannot be run by this actor
221 # pass back the result
224 def update_location(self):
225 """Make sure the location's contents contain this element."""
226 area = self.get("location")
227 if area in self.universe.contents:
228 self.universe.contents[area].contents[self.key] = self
230 def clean_contents(self):
231 """Make sure the element's contents aren't bogus."""
232 for element in self.contents.values():
233 if element.get("location") != self.key:
234 del self.contents[element.key]
236 def go_to(self, area):
237 """Relocate the element to a specific area."""
238 current = self.get("location")
239 if current and self.key in self.universe.contents[current].contents:
240 del universe.contents[current].contents[self.key]
241 if area in self.universe.contents:
242 self.set("location", area)
243 self.universe.contents[area].contents[self.key] = self
247 """Relocate the element to its default location."""
248 self.go_to(self.get("default_location"))
249 self.echo_to_location(
250 "You suddenly realize that " + self.get("name") + " is here."
253 def move_direction(self, direction):
254 """Relocate the element in a specified direction."""
255 self.echo_to_location(
258 ) + " exits " + self.universe.categories[
269 "You exit " + self.universe.categories[
281 self.universe.contents[
282 self.get("location")].link_neighbor(direction)
284 self.echo_to_location(
287 ) + " arrives from " + self.universe.categories[
298 def look_at(self, key):
299 """Show an element to another element."""
301 element = self.universe.contents[key]
303 name = element.get("name")
305 message += "$(cyn)" + name + "$(nrm)$(eol)"
306 description = element.get("description")
308 message += description + "$(eol)"
309 portal_list = list(element.portals().keys())
312 message += "$(cyn)[ Exits: " + ", ".join(
315 for element in self.universe.contents[
318 if element.get("is_actor") and element is not self:
319 message += "$(yel)" + element.get(
321 ) + " is here.$(nrm)$(eol)"
322 elif element is not self:
323 message += "$(grn)" + element.get(
329 """Map the portal directions for an area to neighbors."""
331 if re.match("""^area:-?\d+,-?\d+,-?\d+$""", self.key):
332 coordinates = [(int(x))
333 for x in self.key.split(":")[1].split(",")]
334 directions = self.universe.categories["internal"]["directions"]
338 x, directions.get(x)["vector"]
339 ) for x in directions.facets()
342 for portal in self.get("gridlinks"):
343 adjacent = map(lambda c, o: c + o,
344 coordinates, offsets[portal])
345 neighbor = "area:" + ",".join(
346 [(str(x)) for x in adjacent]
348 if neighbor in self.universe.contents:
349 portals[portal] = neighbor
350 for facet in self.facets():
351 if facet.startswith("link_"):
352 neighbor = self.get(facet)
353 if neighbor in self.universe.contents:
354 portal = facet.split("_")[1]
355 portals[portal] = neighbor
358 def link_neighbor(self, direction):
359 """Return the element linked in a given direction."""
360 portals = self.portals()
361 if direction in portals:
362 return portals[direction]
364 def echo_to_location(self, message):
365 """Show a message to other elements in the current location."""
366 for element in self.universe.contents[
369 if element is not self:
370 element.send(message)
377 def __init__(self, filename="", load=False):
378 """Initialize the universe."""
381 self.default_origins = {}
383 self.private_files = []
384 self.reload_flag = False
385 self.setup_loglines = []
386 self.startdir = os.getcwd()
387 self.terminate_flag = False
390 possible_filenames = [
392 "/usr/local/mudpy/etc/mudpy.yaml",
393 "/usr/local/etc/mudpy.yaml",
394 "/etc/mudpy/mudpy.yaml",
397 for filename in possible_filenames:
398 if os.access(filename, os.R_OK):
400 if not os.path.isabs(filename):
401 filename = os.path.join(self.startdir, filename)
402 self.filename = filename
404 # make sure to preserve any accumulated log entries during load
405 self.setup_loglines += self.load()
408 """Load universe data from persistent storage."""
410 # it's possible for this to enter before logging configuration is read
411 pending_loglines = []
413 # the files dict must exist and filename needs to be read-only
417 self.filename in self.files and self.files[
422 # clear out all read-only files
423 if hasattr(self, "files"):
424 for data_filename in list(self.files.keys()):
425 if not self.files[data_filename].is_writeable():
426 del self.files[data_filename]
428 # start loading from the initial file
429 mudpy.data.DataFile(self.filename, self)
431 # make a list of inactive avatars
432 inactive_avatars = []
433 for account in self.categories["account"].values():
434 for avatar in account.get("avatars"):
436 inactive_avatars.append(self.contents[avatar])
438 pending_loglines.append((
439 "Missing avatar \"%s\", possible data corruption" %
441 for user in self.userlist:
442 if user.avatar in inactive_avatars:
443 inactive_avatars.remove(user.avatar)
445 # go through all elements to clear out inactive avatar locations
446 for element in self.contents.values():
447 area = element.get("location")
448 if element in inactive_avatars and area:
449 if area in self.contents and element.key in self.contents[
452 del self.contents[area].contents[element.key]
453 element.set("default_location", area)
454 element.remove_facet("location")
456 # another pass to straighten out all the element contents
457 for element in self.contents.values():
458 element.update_location()
459 element.clean_contents()
460 return pending_loglines
463 """Create a new, empty Universe (the Big Bang)."""
464 new_universe = Universe()
465 for attribute in vars(self).keys():
466 exec("new_universe." + attribute + " = self." + attribute)
467 new_universe.reload_flag = False
472 """Save the universe to persistent storage."""
473 for key in self.files:
474 self.files[key].save()
476 def initialize_server_socket(self):
477 """Create and open the listening socket."""
479 # need to know the local address and port number for the listener
480 host = self.categories["internal"]["network"].get("host")
481 port = self.categories["internal"]["network"].get("port")
483 # if no host was specified, bind to all local addresses (preferring
491 # figure out if this is ipv4 or v6
492 family = socket.getaddrinfo(host, port)[0][0]
493 if family is socket.AF_INET6 and not socket.has_ipv6:
494 log("No support for IPv6 address %s (use IPv4 instead)." % host)
496 # create a new stream-type socket object
497 self.listening_socket = socket.socket(family, socket.SOCK_STREAM)
499 # set the socket options to allow existing open ones to be
500 # reused (fixes a bug where the server can't bind for a minute
501 # when restarting on linux systems)
502 self.listening_socket.setsockopt(
503 socket.SOL_SOCKET, socket.SO_REUSEADDR, 1
506 # bind the socket to to our desired server ipa and port
507 self.listening_socket.bind((host, port))
509 # disable blocking so we can proceed whether or not we can
511 self.listening_socket.setblocking(0)
513 # start listening on the socket
514 self.listening_socket.listen(1)
516 # note that we're now ready for user connections
518 "Listening for Telnet connections on: " +
519 host + ":" + str(port)
523 """Convenience method to get the elapsed time counter."""
524 return self.categories["internal"]["counters"].get("elapsed")
529 """This is a connected user."""
532 """Default values for the in-memory user variables."""
535 self.authenticated = False
538 self.connection = None
540 self.input_queue = []
541 self.last_address = ""
542 self.last_input = universe.get_time()
543 self.menu_choices = {}
544 self.menu_seen = False
545 self.negotiation_pause = 0
546 self.output_queue = []
547 self.partial_input = b""
548 self.password_tries = 0
549 self.state = "initial"
553 """Log, close the connection and remove."""
555 name = self.account.get("name")
559 message = "User " + name
561 message = "An unnamed user"
562 message += " logged out."
564 self.deactivate_avatar()
565 self.connection.close()
568 def check_idle(self):
569 """Warn or disconnect idle users as appropriate."""
570 idletime = universe.get_time() - self.last_input
571 linkdead_dict = universe.categories["internal"]["time"].get(
574 if self.state in linkdead_dict:
575 linkdead_state = self.state
577 linkdead_state = "default"
578 if idletime > linkdead_dict[linkdead_state]:
580 "$(eol)$(red)You've done nothing for far too long... goodbye!"
585 logline = "Disconnecting "
586 if self.account and self.account.get("name"):
587 logline += self.account.get("name")
589 logline += "an unknown user"
590 logline += (" after idling too long in the " + self.state
593 self.state = "disconnecting"
594 self.menu_seen = False
595 idle_dict = universe.categories["internal"]["time"].get("idle")
596 if self.state in idle_dict:
597 idle_state = self.state
599 idle_state = "default"
600 if idletime == idle_dict[idle_state]:
602 "$(eol)$(red)If you continue to be unproductive, "
603 + "you'll be shown the door...$(nrm)$(eol)"
607 """Save, load a new user and relocate the connection."""
609 # get out of the list
612 # create a new user object
615 # set everything equivalent
616 for attribute in vars(self).keys():
617 exec("new_user." + attribute + " = self." + attribute)
619 # the avatar needs a new owner
621 new_user.avatar.owner = new_user
624 universe.userlist.append(new_user)
626 # get rid of the old user object
629 def replace_old_connections(self):
630 """Disconnect active users with the same name."""
632 # the default return value
635 # iterate over each user in the list
636 for old_user in universe.userlist:
638 # the name is the same but it's not us
641 ) and old_user.account and old_user.account.get(
643 ) == self.account.get(
645 ) and old_user is not self:
649 "User " + self.account.get(
651 ) + " reconnected--closing old connection to "
652 + old_user.address + ".",
656 "$(eol)$(red)New connection from " + self.address
657 + ". Terminating old connection...$(nrm)$(eol)",
662 # close the old connection
663 old_user.connection.close()
665 # replace the old connection with this one
667 "$(eol)$(red)Taking over old connection from "
668 + old_user.address + ".$(nrm)"
670 old_user.connection = self.connection
671 old_user.last_address = old_user.address
672 old_user.address = self.address
674 # take this one out of the list and delete
680 # true if an old connection was replaced, false if not
683 def authenticate(self):
684 """Flag the user as authenticated and disconnect duplicates."""
685 if self.state is not "authenticated":
686 log("User " + self.account.get("name") + " logged in.", 2)
687 self.authenticated = True
688 if self.account.subkey in universe.categories[
695 self.account.set("administrator", "True")
698 """Send the user their current menu."""
699 if not self.menu_seen:
700 self.menu_choices = get_menu_choices(self)
702 get_menu(self.state, self.error, self.menu_choices),
706 self.menu_seen = True
708 self.adjust_echoing()
710 def adjust_echoing(self):
711 """Adjust echoing to match state menu requirements."""
712 if mudpy.telnet.is_enabled(self, mudpy.telnet.TELOPT_ECHO,
714 if menu_echo_on(self.state):
715 mudpy.telnet.disable(self, mudpy.telnet.TELOPT_ECHO,
717 elif not menu_echo_on(self.state):
718 mudpy.telnet.enable(self, mudpy.telnet.TELOPT_ECHO,
722 """Remove a user from the list of connected users."""
723 universe.userlist.remove(self)
733 add_terminator=False,
736 """Send arbitrary text to a connected user."""
738 # unless raw mode is on, clean it up all nice and pretty
741 # strip extra $(eol) off if present
742 while output.startswith("$(eol)"):
744 while output.endswith("$(eol)"):
746 extra_lines = output.find("$(eol)$(eol)$(eol)")
747 while extra_lines > -1:
748 output = output[:extra_lines] + output[extra_lines + 6:]
749 extra_lines = output.find("$(eol)$(eol)$(eol)")
751 # start with a newline, append the message, then end
752 # with the optional eol string passed to this function
753 # and the ansi escape to return to normal text
754 if not just_prompt and prepend_padding:
755 if (not self.output_queue or not
756 self.output_queue[-1].endswith(b"\r\n")):
757 output = "$(eol)" + output
758 elif not self.output_queue[-1].endswith(
760 ) and not self.output_queue[-1].endswith(
763 output = "$(eol)" + output
764 output += eol + chr(27) + "[0m"
766 # tack on a prompt if active
767 if self.state == "active":
772 mode = self.avatar.get("mode")
774 output += "(" + mode + ") "
776 # find and replace macros in the output
777 output = replace_macros(self, output)
779 # wrap the text at the client's width (min 40, 0 disables)
781 if self.columns < 40:
785 output = wrap_ansi_text(output, wrap)
787 # if supported by the client, encode it utf-8
788 if mudpy.telnet.is_enabled(self, mudpy.telnet.TELOPT_BINARY,
790 encoded_output = output.encode("utf-8")
792 # otherwise just send ascii
794 encoded_output = output.encode("ascii", "replace")
796 # end with a terminator if requested
797 if add_prompt or add_terminator:
798 if mudpy.telnet.is_enabled(
799 self, mudpy.telnet.TELOPT_EOR, mudpy.telnet.US):
800 encoded_output += mudpy.telnet.telnet_proto(
801 mudpy.telnet.IAC, mudpy.telnet.EOR)
802 elif not mudpy.telnet.is_enabled(
803 self, mudpy.telnet.TELOPT_SGA, mudpy.telnet.US):
804 encoded_output += mudpy.telnet.telnet_proto(
805 mudpy.telnet.IAC, mudpy.telnet.GA)
807 # and tack it onto the queue
808 self.output_queue.append(encoded_output)
810 # if this is urgent, flush all pending output
814 # just dump raw bytes as requested
816 self.output_queue.append(output)
820 """All the things to do to the user per increment."""
822 # if the world is terminating, disconnect
823 if universe.terminate_flag:
824 self.state = "disconnecting"
825 self.menu_seen = False
827 # check for an idle connection and act appropriately
831 # if output is paused, decrement the counter
832 if self.state == "initial":
833 if self.negotiation_pause:
834 self.negotiation_pause -= 1
836 self.state = "entering_account_name"
838 # show the user a menu as needed
839 elif not self.state == "active":
842 # flush any pending output in the queue
845 # disconnect users with the appropriate state
846 if self.state == "disconnecting":
849 # check for input and add it to the queue
852 # there is input waiting in the queue
854 handle_user_input(self)
857 """Try to send the last item in the queue and remove it."""
858 if self.output_queue:
860 self.connection.send(self.output_queue[0])
861 except BrokenPipeError:
862 if self.account and self.account.get("name"):
863 account = self.account.get("name")
865 account = "an unknown user"
866 self.state = "disconnecting"
867 log("Broken pipe sending to %s." % account, 7)
868 del self.output_queue[0]
870 def enqueue_input(self):
871 """Process and enqueue any new input."""
873 # check for some input
875 raw_input = self.connection.recv(1024)
876 except (BlockingIOError, OSError):
882 # tack this on to any previous partial
883 self.partial_input += raw_input
885 # reply to and remove any IAC negotiation codes
886 mudpy.telnet.negotiate_telnet_options(self)
888 # separate multiple input lines
889 new_input_lines = self.partial_input.split(b"\n")
891 # if input doesn't end in a newline, replace the
892 # held partial input with the last line of it
893 if not self.partial_input.endswith(b"\n"):
894 self.partial_input = new_input_lines.pop()
896 # otherwise, chop off the extra null input and reset
897 # the held partial input
899 new_input_lines.pop()
900 self.partial_input = b""
902 # iterate over the remaining lines
903 for line in new_input_lines:
905 # strip off extra whitespace
908 # log non-printable characters remaining
909 if mudpy.telnet.is_enabled(self, mudpy.telnet.TELOPT_BINARY,
911 asciiline = bytes([x for x in line if 32 <= x <= 126])
912 if line != asciiline:
913 logline = "Non-ASCII characters from "
914 if self.account and self.account.get("name"):
915 logline += self.account.get("name") + ": "
917 logline += "unknown user: "
918 logline += repr(line)
923 line = line.decode("utf-8")
924 except UnicodeDecodeError:
925 logline = "Non-UTF-8 characters from "
926 if self.account and self.account.get("name"):
927 logline += self.account.get("name") + ": "
929 logline += "unknown user: "
930 logline += repr(line)
934 line = unicodedata.normalize("NFKC", line)
936 # put on the end of the queue
937 self.input_queue.append(line)
939 def new_avatar(self):
940 """Instantiate a new, unconfigured avatar for this user."""
942 while "avatar:" + self.account.get("name") + ":" + str(
944 ) in universe.categories["actor"].keys():
946 self.avatar = Element(
947 "actor:avatar:" + self.account.get("name") + ":" + str(
950 universe, old_style=True
952 self.avatar.append("inherit", "archetype:avatar")
953 self.account.append("avatars", self.avatar.key)
955 def delete_avatar(self, avatar):
956 """Remove an avatar from the world and from the user's list."""
957 if self.avatar is universe.contents[avatar]:
959 universe.contents[avatar].destroy()
960 avatars = self.account.get("avatars")
961 avatars.remove(avatar)
962 self.account.set("avatars", avatars)
964 def activate_avatar_by_index(self, index):
965 """Enter the world with a particular indexed avatar."""
966 self.avatar = universe.contents[
967 self.account.get("avatars")[index]]
968 self.avatar.owner = self
969 self.state = "active"
970 self.avatar.go_home()
972 def deactivate_avatar(self):
973 """Have the active avatar leave the world."""
975 current = self.avatar.get("location")
977 self.avatar.set("default_location", current)
978 self.avatar.echo_to_location(
979 "You suddenly wonder where " + self.avatar.get(
983 del universe.contents[current].contents[self.avatar.key]
984 self.avatar.remove_facet("location")
985 self.avatar.owner = None
989 """Destroy the user and associated avatars."""
990 for avatar in self.account.get("avatars"):
991 self.delete_avatar(avatar)
992 self.account.destroy()
994 def list_avatar_names(self):
995 """List names of assigned avatars."""
997 for avatar in self.account.get("avatars"):
999 avatars.append(universe.contents[avatar].get("name"))
1001 log("Missing avatar \"%s\", possible data corruption." %
1006 def broadcast(message, add_prompt=True):
1007 """Send a message to all connected users."""
1008 for each_user in universe.userlist:
1009 each_user.send("$(eol)" + message, add_prompt=add_prompt)
1012 def log(message, level=0):
1013 """Log a message."""
1015 # a couple references we need
1016 file_name = universe.categories["internal"]["logging"].get("file")
1017 max_log_lines = universe.categories["internal"]["logging"].get(
1020 syslog_name = universe.categories["internal"]["logging"].get("syslog")
1021 timestamp = time.asctime()[4:19]
1023 # turn the message into a list of nonempty lines
1024 lines = [x for x in [(x.rstrip()) for x in message.split("\n")] if x != ""]
1026 # send the timestamp and line to a file
1028 if not os.path.isabs(file_name):
1029 file_name = os.path.join(universe.startdir, file_name)
1030 file_descriptor = codecs.open(file_name, "a", "utf-8")
1032 file_descriptor.write(timestamp + " " + line + "\n")
1033 file_descriptor.flush()
1034 file_descriptor.close()
1036 # send the timestamp and line to standard output
1037 if universe.categories["internal"]["logging"].get("stdout"):
1039 print(timestamp + " " + line)
1041 # send the line to the system log
1044 syslog_name.encode("utf-8"),
1046 syslog.LOG_INFO | syslog.LOG_DAEMON
1052 # display to connected administrators
1053 for user in universe.userlist:
1054 if user.state == "active" and user.account.get(
1056 ) and user.account.get("loglevel", 0) <= level:
1057 # iterate over every line in the message
1061 "$(bld)$(red)" + timestamp + " "
1062 + line.replace("$(", "$_(") + "$(nrm)$(eol)")
1063 user.send(full_message, flush=True)
1065 # add to the recent log list
1067 while 0 < len(universe.loglines) >= max_log_lines:
1068 del universe.loglines[0]
1069 universe.loglines.append((level, timestamp + " " + line))
1072 def get_loglines(level, start, stop):
1073 """Return a specific range of loglines filtered by level."""
1075 # filter the log lines
1076 loglines = [x for x in universe.loglines if x[0] >= level]
1078 # we need these in several places
1079 total_count = str(len(universe.loglines))
1080 filtered_count = len(loglines)
1082 # don't proceed if there are no lines
1085 # can't start before the begining or at the end
1086 if start > filtered_count:
1087 start = filtered_count
1091 # can't stop before we start
1098 message = "There are " + str(total_count)
1099 message += " log lines in memory and " + str(filtered_count)
1100 message += " at or above level " + str(level) + "."
1101 message += " The matching lines from " + str(stop) + " to "
1102 message += str(start) + " are:$(eol)$(eol)"
1104 # add the text from the selected lines
1106 range_lines = loglines[-start:-(stop - 1)]
1108 range_lines = loglines[-start:]
1109 for line in range_lines:
1110 message += " (" + str(line[0]) + ") " + line[1].replace(
1114 # there were no lines
1116 message = "None of the " + str(total_count)
1117 message += " lines in memory matches your request."
1123 def glyph_columns(character):
1124 """Convenience function to return the column width of a glyph."""
1125 if unicodedata.east_asian_width(character) in "FW":
1131 def wrap_ansi_text(text, width):
1132 """Wrap text with arbitrary width while ignoring ANSI colors."""
1134 # the current position in the entire text string, including all
1135 # characters, printable or otherwise
1138 # the current text position relative to the begining of the line,
1139 # ignoring color escape sequences
1142 # the absolute position of the most recent whitespace character
1145 # whether the current character is part of a color escape sequence
1148 # normalize any potentially composited unicode before we count it
1149 text = unicodedata.normalize("NFKC", text)
1151 # iterate over each character from the begining of the text
1152 for each_character in text:
1154 # the current character is the escape character
1155 if each_character == "\x1b" and not escape:
1158 # the current character is within an escape sequence
1161 # the current character is m, which terminates the
1163 if each_character == "m":
1166 # the current character is a newline, so reset the relative
1167 # position (start a new line)
1168 elif each_character == "\n":
1170 last_whitespace = abs_pos
1172 # the current character meets the requested maximum line width,
1173 # so we need to backtrack and find a space at which to wrap;
1174 # special care is taken to avoid an off-by-one in case the
1175 # current character is a double-width glyph
1176 elif each_character != "\r" and (
1177 rel_pos >= width or (
1178 rel_pos >= width - 1 and glyph_columns(
1184 # it's always possible we landed on whitespace
1185 if unicodedata.category(each_character) in ("Cc", "Zs"):
1186 last_whitespace = abs_pos
1188 # insert an eol in place of the space
1189 text = text[:last_whitespace] + "\r\n" + text[last_whitespace + 1:]
1191 # increase the absolute position because an eol is two
1192 # characters but the space it replaced was only one
1195 # now we're at the begining of a new line, plus the
1196 # number of characters wrapped from the previous line
1198 for remaining_characters in text[last_whitespace:abs_pos]:
1199 rel_pos += glyph_columns(remaining_characters)
1201 # as long as the character is not a carriage return and the
1202 # other above conditions haven't been met, count it as a
1203 # printable character
1204 elif each_character != "\r":
1205 rel_pos += glyph_columns(each_character)
1206 if unicodedata.category(each_character) in ("Cc", "Zs"):
1207 last_whitespace = abs_pos
1209 # increase the absolute position for every character
1212 # return the newly-wrapped text
1216 def weighted_choice(data):
1217 """Takes a dict weighted by value and returns a random key."""
1219 # this will hold our expanded list of keys from the data
1222 # create the expanded list of keys
1223 for key in data.keys():
1224 for count in range(data[key]):
1225 expanded.append(key)
1227 # return one at random
1228 return random.choice(expanded)
1232 """Returns a random character name."""
1234 # the vowels and consonants needed to create romaji syllables
1263 # this dict will hold our weighted list of syllables
1266 # generate the list with an even weighting
1267 for consonant in consonants:
1268 for vowel in vowels:
1269 syllables[consonant + vowel] = 1
1271 # we'll build the name into this string
1274 # create a name of random length from the syllables
1275 for syllable in range(random.randrange(2, 6)):
1276 name += weighted_choice(syllables)
1278 # strip any leading quotemark, capitalize and return the name
1279 return name.strip("'").capitalize()
1282 def replace_macros(user, text, is_input=False):
1283 """Replaces macros in text output."""
1285 # third person pronouns
1287 "female": {"obj": "her", "pos": "hers", "sub": "she"},
1288 "male": {"obj": "him", "pos": "his", "sub": "he"},
1289 "neuter": {"obj": "it", "pos": "its", "sub": "it"}
1292 # a dict of replacement macros
1295 "bld": chr(27) + "[1m",
1296 "nrm": chr(27) + "[0m",
1297 "blk": chr(27) + "[30m",
1298 "blu": chr(27) + "[34m",
1299 "cyn": chr(27) + "[36m",
1300 "grn": chr(27) + "[32m",
1301 "mgt": chr(27) + "[35m",
1302 "red": chr(27) + "[31m",
1303 "yel": chr(27) + "[33m",
1306 # add dynamic macros where possible
1308 account_name = user.account.get("name")
1310 macros["account"] = account_name
1312 avatar_gender = user.avatar.get("gender")
1314 macros["tpop"] = pronouns[avatar_gender]["obj"]
1315 macros["tppp"] = pronouns[avatar_gender]["pos"]
1316 macros["tpsp"] = pronouns[avatar_gender]["sub"]
1321 # find and replace per the macros dict
1322 macro_start = text.find("$(")
1323 if macro_start == -1:
1325 macro_end = text.find(")", macro_start) + 1
1326 macro = text[macro_start + 2:macro_end - 1]
1327 if macro in macros.keys():
1328 replacement = macros[macro]
1330 # this is how we handle local file inclusion (dangerous!)
1331 elif macro.startswith("inc:"):
1332 incfile = mudpy.data.find_file(macro[4:], universe=universe)
1333 if os.path.exists(incfile):
1334 incfd = codecs.open(incfile, "r", "utf-8")
1337 if line.endswith("\n") and not line.endswith("\r\n"):
1338 line = line.replace("\n", "\r\n")
1340 # lose the trailing eol
1341 replacement = replacement[:-2]
1344 log("Couldn't read included " + incfile + " file.", 6)
1346 # if we get here, log and replace it with null
1350 log("Unexpected replacement macro " +
1351 macro + " encountered.", 6)
1353 # and now we act on the replacement
1354 text = text.replace("$(" + macro + ")", replacement)
1356 # replace the look-like-a-macro sequence
1357 text = text.replace("$_(", "$(")
1362 def escape_macros(value):
1363 """Escapes replacement macros in text."""
1364 if type(value) is str:
1365 return value.replace("$(", "$_(")
1370 def first_word(text, separator=" "):
1371 """Returns a tuple of the first word and the rest."""
1373 if text.find(separator) > 0:
1374 return text.split(separator, 1)
1382 """The things which should happen on each pulse, aside from reloads."""
1384 # open the listening socket if it hasn't been already
1385 if not hasattr(universe, "listening_socket"):
1386 universe.initialize_server_socket()
1388 # assign a user if a new connection is waiting
1389 user = check_for_connection(universe.listening_socket)
1391 universe.userlist.append(user)
1393 # iterate over the connected users
1394 for user in universe.userlist:
1397 # add an element for counters if it doesn't exist
1398 if "counters" not in universe.categories["internal"]:
1399 universe.categories["internal"]["counters"] = Element(
1400 "internal:counters", universe, old_style=True
1403 # update the log every now and then
1404 if not universe.categories["internal"]["counters"].get("mark"):
1405 log(str(len(universe.userlist)) + " connection(s)")
1406 universe.categories["internal"]["counters"].set(
1407 "mark", universe.categories["internal"]["time"].get(
1412 universe.categories["internal"]["counters"].set(
1413 "mark", universe.categories["internal"]["counters"].get(
1418 # periodically save everything
1419 if not universe.categories["internal"]["counters"].get("save"):
1421 universe.categories["internal"]["counters"].set(
1422 "save", universe.categories["internal"]["time"].get(
1427 universe.categories["internal"]["counters"].set(
1428 "save", universe.categories["internal"]["counters"].get(
1433 # pause for a configurable amount of time (decimal seconds)
1434 time.sleep(universe.categories["internal"]
1435 ["time"].get("increment"))
1437 # increase the elapsed increment counter
1438 universe.categories["internal"]["counters"].set(
1439 "elapsed", universe.categories["internal"]["counters"].get(
1446 """Reload all relevant objects."""
1447 for user in universe.userlist[:]:
1449 for element in universe.contents.values():
1450 if element.origin.is_writeable():
1455 def check_for_connection(listening_socket):
1456 """Check for a waiting connection and return a new user object."""
1458 # try to accept a new connection
1460 connection, address = listening_socket.accept()
1461 except BlockingIOError:
1464 # note that we got one
1465 log("Connection from " + address[0], 2)
1467 # disable blocking so we can proceed whether or not we can send/receive
1468 connection.setblocking(0)
1470 # create a new user object
1473 # associate this connection with it
1474 user.connection = connection
1476 # set the user's ipa from the connection's ipa
1477 user.address = address[0]
1479 # let the client know we WILL EOR (RFC 885)
1480 mudpy.telnet.enable(user, mudpy.telnet.TELOPT_EOR, mudpy.telnet.US)
1481 user.negotiation_pause = 2
1483 # return the new user object
1487 def get_menu(state, error=None, choices=None):
1488 """Show the correct menu text to a user."""
1490 # make sure we don't reuse a mutable sequence by default
1494 # get the description or error text
1495 message = get_menu_description(state, error)
1497 # get menu choices for the current state
1498 message += get_formatted_menu_choices(state, choices)
1500 # try to get a prompt, if it was defined
1501 message += get_menu_prompt(state)
1503 # throw in the default choice, if it exists
1504 message += get_formatted_default_menu_choice(state)
1506 # display a message indicating if echo is off
1507 message += get_echo_message(state)
1509 # return the assembly of various strings defined above
1513 def menu_echo_on(state):
1514 """True if echo is on, false if it is off."""
1515 return universe.categories["menu"][state].get("echo", True)
1518 def get_echo_message(state):
1519 """Return a message indicating that echo is off."""
1520 if menu_echo_on(state):
1523 return "(won't echo) "
1526 def get_default_menu_choice(state):
1527 """Return the default choice for a menu."""
1528 return universe.categories["menu"][state].get("default")
1531 def get_formatted_default_menu_choice(state):
1532 """Default menu choice foratted for inclusion in a prompt string."""
1533 default_choice = get_default_menu_choice(state)
1535 return "[$(red)" + default_choice + "$(nrm)] "
1540 def get_menu_description(state, error):
1541 """Get the description or error text."""
1543 # an error condition was raised by the handler
1546 # try to get an error message matching the condition
1548 description = universe.categories[
1549 "menu"][state].get("error_" + error)
1551 description = "That is not a valid choice..."
1552 description = "$(red)" + description + "$(nrm)"
1554 # there was no error condition
1557 # try to get a menu description for the current state
1558 description = universe.categories["menu"][state].get("description")
1560 # return the description or error message
1562 description += "$(eol)$(eol)"
1566 def get_menu_prompt(state):
1567 """Try to get a prompt, if it was defined."""
1568 prompt = universe.categories["menu"][state].get("prompt")
1574 def get_menu_choices(user):
1575 """Return a dict of choice:meaning."""
1576 menu = universe.categories["menu"][user.state]
1577 create_choices = menu.get("create")
1579 choices = eval(create_choices)
1585 for facet in menu.facets():
1586 if facet.startswith("demand_") and not eval(
1587 universe.categories["menu"][user.state].get(facet)
1589 ignores.append(facet.split("_", 2)[1])
1590 elif facet.startswith("create_"):
1591 creates[facet] = facet.split("_", 2)[1]
1592 elif facet.startswith("choice_"):
1593 options[facet] = facet.split("_", 2)[1]
1594 for facet in creates.keys():
1595 if not creates[facet] in ignores:
1596 choices[creates[facet]] = eval(menu.get(facet))
1597 for facet in options.keys():
1598 if not options[facet] in ignores:
1599 choices[options[facet]] = menu.get(facet)
1603 def get_formatted_menu_choices(state, choices):
1604 """Returns a formatted string of menu choices."""
1606 choice_keys = list(choices.keys())
1608 for choice in choice_keys:
1609 choice_output += " [$(red)" + choice + "$(nrm)] " + choices[
1613 choice_output += "$(eol)"
1614 return choice_output
1617 def get_menu_branches(state):
1618 """Return a dict of choice:branch."""
1620 for facet in universe.categories["menu"][state].facets():
1621 if facet.startswith("branch_"):
1623 facet.split("_", 2)[1]
1624 ] = universe.categories["menu"][state].get(facet)
1628 def get_default_branch(state):
1629 """Return the default branch."""
1630 return universe.categories["menu"][state].get("branch")
1633 def get_choice_branch(user, choice):
1634 """Returns the new state matching the given choice."""
1635 branches = get_menu_branches(user.state)
1636 if choice in branches.keys():
1637 return branches[choice]
1638 elif choice in user.menu_choices.keys():
1639 return get_default_branch(user.state)
1644 def get_menu_actions(state):
1645 """Return a dict of choice:branch."""
1647 for facet in universe.categories["menu"][state].facets():
1648 if facet.startswith("action_"):
1650 facet.split("_", 2)[1]
1651 ] = universe.categories["menu"][state].get(facet)
1655 def get_default_action(state):
1656 """Return the default action."""
1657 return universe.categories["menu"][state].get("action")
1660 def get_choice_action(user, choice):
1661 """Run any indicated script for the given choice."""
1662 actions = get_menu_actions(user.state)
1663 if choice in actions.keys():
1664 return actions[choice]
1665 elif choice in user.menu_choices.keys():
1666 return get_default_action(user.state)
1671 def handle_user_input(user):
1672 """The main handler, branches to a state-specific handler."""
1674 # if the user's client echo is off, send a blank line for aesthetics
1675 if mudpy.telnet.is_enabled(user, mudpy.telnet.TELOPT_ECHO,
1677 user.send("", add_prompt=False, prepend_padding=False)
1679 # check to make sure the state is expected, then call that handler
1680 if "handler_" + user.state in globals():
1681 exec("handler_" + user.state + "(user)")
1683 generic_menu_handler(user)
1685 # since we got input, flag that the menu/prompt needs to be redisplayed
1686 user.menu_seen = False
1688 # update the last_input timestamp while we're at it
1689 user.last_input = universe.get_time()
1692 def generic_menu_handler(user):
1693 """A generic menu choice handler."""
1695 # get a lower-case representation of the next line of input
1696 if user.input_queue:
1697 choice = user.input_queue.pop(0)
1699 choice = choice.lower()
1703 choice = get_default_menu_choice(user.state)
1704 if choice in user.menu_choices:
1705 exec(get_choice_action(user, choice))
1706 new_state = get_choice_branch(user, choice)
1708 user.state = new_state
1710 user.error = "default"
1713 def handler_entering_account_name(user):
1714 """Handle the login account name."""
1716 # get the next waiting line of input
1717 input_data = user.input_queue.pop(0)
1719 # did the user enter anything?
1722 # keep only the first word and convert to lower-case
1723 name = input_data.lower()
1725 # fail if there are non-alphanumeric characters
1726 if name != "".join(filter(
1727 lambda x: x >= "0" and x <= "9" or x >= "a" and x <= "z",
1729 user.error = "bad_name"
1731 # if that account exists, time to request a password
1732 elif name in universe.categories["account"]:
1733 user.account = universe.categories["account"][name]
1734 user.state = "checking_password"
1736 # otherwise, this could be a brand new user
1738 user.account = Element("account:" + name, universe, old_style=True)
1739 user.account.set("name", name)
1740 log("New user: " + name, 2)
1741 user.state = "checking_new_account_name"
1743 # if the user entered nothing for a name, then buhbye
1745 user.state = "disconnecting"
1748 def handler_checking_password(user):
1749 """Handle the login account password."""
1751 # get the next waiting line of input
1752 input_data = user.input_queue.pop(0)
1754 # does the hashed input equal the stored hash?
1755 if mudpy.password.verify(input_data, user.account.get("passhash")):
1757 # if so, set the username and load from cold storage
1758 if not user.replace_old_connections():
1760 user.state = "main_utility"
1762 # if at first your hashes don't match, try, try again
1763 elif user.password_tries < universe.categories[
1770 user.password_tries += 1
1771 user.error = "incorrect"
1773 # we've exceeded the maximum number of password failures, so disconnect
1776 "$(eol)$(red)Too many failed password attempts...$(nrm)$(eol)"
1778 user.state = "disconnecting"
1781 def handler_entering_new_password(user):
1782 """Handle a new password entry."""
1784 # get the next waiting line of input
1785 input_data = user.input_queue.pop(0)
1787 # make sure the password is strong--at least one upper, one lower and
1788 # one digit, seven or more characters in length
1789 if len(input_data) > 6 and len(
1790 list(filter(lambda x: x >= "0" and x <= "9", input_data))
1792 list(filter(lambda x: x >= "A" and x <= "Z", input_data))
1794 list(filter(lambda x: x >= "a" and x <= "z", input_data))
1797 # hash and store it, then move on to verification
1798 user.account.set("passhash", mudpy.password.create(input_data))
1799 user.state = "verifying_new_password"
1801 # the password was weak, try again if you haven't tried too many times
1802 elif user.password_tries < universe.categories[
1809 user.password_tries += 1
1812 # too many tries, so adios
1815 "$(eol)$(red)Too many failed password attempts...$(nrm)$(eol)"
1817 user.account.destroy()
1818 user.state = "disconnecting"
1821 def handler_verifying_new_password(user):
1822 """Handle the re-entered new password for verification."""
1824 # get the next waiting line of input
1825 input_data = user.input_queue.pop(0)
1827 # hash the input and match it to storage
1828 if mudpy.password.verify(input_data, user.account.get("passhash")):
1831 # the hashes matched, so go active
1832 if not user.replace_old_connections():
1833 user.state = "main_utility"
1835 # go back to entering the new password as long as you haven't tried
1837 elif user.password_tries < universe.categories[
1844 user.password_tries += 1
1845 user.error = "differs"
1846 user.state = "entering_new_password"
1848 # otherwise, sayonara
1851 "$(eol)$(red)Too many failed password attempts...$(nrm)$(eol)"
1853 user.account.destroy()
1854 user.state = "disconnecting"
1857 def handler_active(user):
1858 """Handle input for active users."""
1860 # get the next waiting line of input
1861 input_data = user.input_queue.pop(0)
1866 # split out the command and parameters
1868 mode = actor.get("mode")
1869 if mode and input_data.startswith("!"):
1870 command_name, parameters = first_word(input_data[1:])
1871 elif mode == "chat":
1872 command_name = "say"
1873 parameters = input_data
1875 command_name, parameters = first_word(input_data)
1877 # lowercase the command
1878 command_name = command_name.lower()
1880 # the command matches a command word for which we have data
1881 if command_name in universe.categories["command"]:
1882 command = universe.categories["command"][command_name]
1886 # if it's allowed, do it
1887 if actor.can_run(command):
1888 exec(command.get("action"))
1890 # otherwise, give an error
1892 command_error(actor, input_data)
1894 # if no input, just idle back with a prompt
1896 user.send("", just_prompt=True)
1899 def command_halt(actor, parameters):
1900 """Halt the world."""
1903 # see if there's a message or use a generic one
1905 message = "Halting: " + parameters
1907 message = "User " + actor.owner.account.get(
1909 ) + " halted the world."
1912 broadcast(message, add_prompt=False)
1915 # set a flag to terminate the world
1916 universe.terminate_flag = True
1919 def command_reload(actor):
1920 """Reload all code modules, configs and data."""
1923 # let the user know and log
1924 actor.send("Reloading all code modules, configs and data.")
1927 actor.owner.account.get("name") + " reloaded the world.",
1931 # set a flag to reload
1932 universe.reload_flag = True
1935 def command_quit(actor):
1936 """Leave the world and go back to the main menu."""
1938 actor.owner.state = "main_utility"
1939 actor.owner.deactivate_avatar()
1942 def command_help(actor, parameters):
1943 """List available commands and provide help for commands."""
1945 # did the user ask for help on a specific command word?
1946 if parameters and actor.owner:
1948 # is the command word one for which we have data?
1949 if parameters in universe.categories["command"]:
1950 command = universe.categories["command"][parameters]
1954 # only for allowed commands
1955 if actor.can_run(command):
1957 # add a description if provided
1958 description = command.get("description")
1960 description = "(no short description provided)"
1961 if command.get("administrative"):
1965 output += parameters + "$(nrm) - " + description + "$(eol)$(eol)"
1967 # add the help text if provided
1968 help_text = command.get("help")
1970 help_text = "No help is provided for this command."
1973 # list related commands
1974 see_also = command.get("see_also")
1976 really_see_also = ""
1977 for item in see_also:
1978 if item in universe.categories["command"]:
1979 command = universe.categories["command"][item]
1980 if actor.can_run(command):
1982 really_see_also += ", "
1983 if command.get("administrative"):
1984 really_see_also += "$(red)"
1986 really_see_also += "$(grn)"
1987 really_see_also += item + "$(nrm)"
1989 output += "$(eol)$(eol)See also: " + really_see_also
1991 # no data for the requested command word
1993 output = "That is not an available command."
1995 # no specific command word was indicated
1998 # give a sorted list of commands with descriptions if provided
1999 output = "These are the commands available to you:$(eol)$(eol)"
2000 sorted_commands = list(universe.categories["command"].keys())
2001 sorted_commands.sort()
2002 for item in sorted_commands:
2003 command = universe.categories["command"][item]
2004 if actor.can_run(command):
2005 description = command.get("description")
2007 description = "(no short description provided)"
2008 if command.get("administrative"):
2012 output += item + "$(nrm) - " + description + "$(eol)"
2013 output += ("$(eol)Enter \"help COMMAND\" for help on a command "
2014 "named \"COMMAND\".")
2016 # send the accumulated output to the user
2020 def command_move(actor, parameters):
2021 """Move the avatar in a given direction."""
2022 if parameters in universe.contents[actor.get("location")].portals():
2023 actor.move_direction(parameters)
2025 actor.send("You cannot go that way.")
2028 def command_look(actor, parameters):
2031 actor.send("You can't look at or in anything yet.")
2033 actor.look_at(actor.get("location"))
2036 def command_say(actor, parameters):
2037 """Speak to others in the same area."""
2039 # check for replacement macros and escape them
2040 parameters = escape_macros(parameters)
2042 # if the message is wrapped in quotes, remove them and leave contents
2044 if parameters.startswith("\"") and parameters.endswith("\""):
2045 message = parameters[1:-1]
2048 # otherwise, get rid of stray quote marks on the ends of the message
2050 message = parameters.strip("\"'`")
2053 # the user entered a message
2056 # match the punctuation used, if any, to an action
2057 actions = universe.contents["mudpy.linguistic"].get(
2060 default_punctuation = (
2061 universe.contents["mudpy.linguistic"].get(
2062 "default_punctuation"))
2065 # reverse sort punctuation options so the longest match wins
2066 for mark in sorted(actions.keys(), reverse=True):
2067 if not literal and message.endswith(mark):
2068 action = actions[mark]
2071 # add punctuation if needed
2073 action = actions[default_punctuation]
2074 if message and not (
2075 literal or unicodedata.category(message[-1]) == "Po"
2077 message += default_punctuation
2079 # failsafe checks to avoid unwanted reformatting and null strings
2080 if message and not literal:
2082 # decapitalize the first letter to improve matching
2083 message = message[0].lower() + message[1:]
2085 # iterate over all words in message, replacing typos
2086 typos = universe.contents["mudpy.linguistic"].get(
2089 words = message.split()
2090 for index in range(len(words)):
2092 while unicodedata.category(word[0]) == "Po":
2094 while unicodedata.category(word[-1]) == "Po":
2096 if word in typos.keys():
2097 words[index] = words[index].replace(word, typos[word])
2098 message = " ".join(words)
2100 # capitalize the first letter
2101 message = message[0].upper() + message[1:]
2105 actor.echo_to_location(
2106 actor.get("name") + " " + action + "s, \"" + message + "\""
2108 actor.send("You " + action + ", \"" + message + "\"")
2110 # there was no message
2112 actor.send("What do you want to say?")
2115 def command_chat(actor):
2116 """Toggle chat mode."""
2117 mode = actor.get("mode")
2119 actor.set("mode", "chat")
2120 actor.send("Entering chat mode (use $(grn)!chat$(nrm) to exit).")
2121 elif mode == "chat":
2122 actor.remove_facet("mode")
2123 actor.send("Exiting chat mode.")
2125 actor.send("Sorry, but you're already busy with something else!")
2128 def command_show(actor, parameters):
2129 """Show program data."""
2131 arguments = parameters.split()
2133 message = "What do you want to show?"
2134 elif arguments[0] == "time":
2135 message = universe.categories["internal"]["counters"].get(
2137 ) + " increments elapsed since the world was created."
2138 elif arguments[0] == "categories":
2139 message = "These are the element categories:$(eol)"
2140 categories = list(universe.categories.keys())
2142 for category in categories:
2143 message += "$(eol) $(grn)" + category + "$(nrm)"
2144 elif arguments[0] == "files":
2145 message = "These are the current files containing the universe:$(eol)"
2146 filenames = list(universe.files.keys())
2148 for filename in filenames:
2149 if universe.files[filename].is_writeable():
2153 message += ("$(eol) $(red)(" + status + ") $(grn)" + filename
2155 elif arguments[0] == "category":
2156 if len(arguments) != 2:
2157 message = "You must specify one category."
2158 elif arguments[1] in universe.categories:
2159 message = ("These are the elements in the \"" + arguments[1]
2160 + "\" category:$(eol)")
2163 universe.categories[arguments[1]][x].key
2164 ) for x in universe.categories[arguments[1]].keys()
2167 for element in elements:
2168 message += "$(eol) $(grn)" + element + "$(nrm)"
2170 message = "Category \"" + arguments[1] + "\" does not exist."
2171 elif arguments[0] == "file":
2172 if len(arguments) != 2:
2173 message = "You must specify one file."
2174 elif arguments[1] in universe.files:
2175 message = ("These are the elements in the \"" + arguments[1]
2177 elements = universe.files[arguments[1]].data.keys()
2179 for element in elements:
2180 message += "$(eol) $(grn)" + element + "$(nrm)"
2182 message = "Category \"" + arguments[1] + "\" does not exist."
2183 elif arguments[0] == "element":
2184 if len(arguments) != 2:
2185 message = "You must specify one element."
2186 elif arguments[1] in universe.contents:
2187 element = universe.contents[arguments[1]]
2188 message = ("These are the properties of the \"" + arguments[1]
2189 + "\" element (in \"" + element.origin.filename
2191 facets = element.facets()
2192 for facet in sorted(facets):
2193 if element.old_style:
2194 message += ("$(eol) $(grn)%s: $(red)%s$(nrm)" %
2195 (facet, escape_macros(element.get(facet))))
2197 message += ("$(eol) $(grn)%s: $(red)%s$(nrm)" %
2198 (facet, str(facets[facet])))
2200 message = "Element \"" + arguments[1] + "\" does not exist."
2201 elif arguments[0] == "result":
2202 if len(arguments) < 2:
2203 message = "You need to specify an expression."
2206 message = repr(eval(" ".join(arguments[1:])))
2207 except Exception as e:
2208 message = ("$(red)Your expression raised an exception...$(eol)"
2209 "$(eol)$(bld)%s$(nrm)" % e)
2210 elif arguments[0] == "log":
2211 if len(arguments) == 4:
2212 if re.match("^\d+$", arguments[3]) and int(arguments[3]) >= 0:
2213 stop = int(arguments[3])
2218 if len(arguments) >= 3:
2219 if re.match("^\d+$", arguments[2]) and int(arguments[2]) > 0:
2220 start = int(arguments[2])
2225 if len(arguments) >= 2:
2226 if (re.match("^\d+$", arguments[1])
2227 and 0 <= int(arguments[1]) <= 9):
2228 level = int(arguments[1])
2231 elif 0 <= actor.owner.account.get("loglevel", 0) <= 9:
2232 level = actor.owner.account.get("loglevel", 0)
2235 if level > -1 and start > -1 and stop > -1:
2236 message = get_loglines(level, start, stop)
2238 message = ("When specified, level must be 0-9 (default 1), "
2239 "start and stop must be >=1 (default 10 and 1).")
2241 message = "I don't know what \"" + parameters + "\" is."
2245 def command_create(actor, parameters):
2246 """Create an element if it does not exist."""
2248 message = "You must at least specify an element to create."
2249 elif not actor.owner:
2252 arguments = parameters.split()
2253 if len(arguments) == 1:
2254 arguments.append("")
2255 if len(arguments) == 2:
2256 element, filename = arguments
2257 if element in universe.contents:
2258 message = "The \"" + element + "\" element already exists."
2260 message = ("You create \"" +
2261 element + "\" within the universe.")
2262 logline = actor.owner.account.get(
2264 ) + " created an element: " + element
2266 logline += " in file " + filename
2267 if filename not in universe.files:
2269 " Warning: \"" + filename + "\" is not yet "
2270 "included in any other file and will not be read "
2271 "on startup unless this is remedied.")
2272 Element(element, universe, filename, old_style=True)
2274 elif len(arguments) > 2:
2275 message = "You can only specify an element and a filename."
2279 def command_destroy(actor, parameters):
2280 """Destroy an element if it exists."""
2283 message = "You must specify an element to destroy."
2285 if parameters not in universe.contents:
2286 message = "The \"" + parameters + "\" element does not exist."
2288 universe.contents[parameters].destroy()
2289 message = ("You destroy \"" + parameters
2290 + "\" within the universe.")
2292 actor.owner.account.get(
2294 ) + " destroyed an element: " + parameters,
2300 def command_set(actor, parameters):
2301 """Set a facet of an element."""
2303 message = "You must specify an element, a facet and a value."
2305 arguments = parameters.split(" ", 2)
2306 if len(arguments) == 1:
2307 message = ("What facet of element \"" + arguments[0]
2308 + "\" would you like to set?")
2309 elif len(arguments) == 2:
2310 message = ("What value would you like to set for the \"" +
2311 arguments[1] + "\" facet of the \"" + arguments[0]
2314 element, facet, value = arguments
2315 if element not in universe.contents:
2316 message = "The \"" + element + "\" element does not exist."
2318 universe.contents[element].set(facet, value)
2319 message = ("You have successfully (re)set the \"" + facet
2320 + "\" facet of element \"" + element
2321 + "\". Try \"show element " +
2322 element + "\" for verification.")
2326 def command_delete(actor, parameters):
2327 """Delete a facet from an element."""
2329 message = "You must specify an element and a facet."
2331 arguments = parameters.split(" ")
2332 if len(arguments) == 1:
2333 message = ("What facet of element \"" + arguments[0]
2334 + "\" would you like to delete?")
2335 elif len(arguments) != 2:
2336 message = "You may only specify an element and a facet."
2338 element, facet = arguments
2339 if element not in universe.contents:
2340 message = "The \"" + element + "\" element does not exist."
2341 elif facet not in universe.contents[element].facets():
2342 message = ("The \"" + element + "\" element has no \"" + facet
2345 universe.contents[element].remove_facet(facet)
2346 message = ("You have successfully deleted the \"" + facet
2347 + "\" facet of element \"" + element
2348 + "\". Try \"show element " +
2349 element + "\" for verification.")
2353 def command_error(actor, input_data):
2354 """Generic error for an unrecognized command word."""
2356 # 90% of the time use a generic error
2357 if random.randrange(10):
2358 message = "I'm not sure what \"" + input_data + "\" means..."
2360 # 10% of the time use the classic diku error
2362 message = "Arglebargle, glop-glyf!?!"
2364 # send the error message
2368 def daemonize(universe):
2369 """Fork and disassociate from everything."""
2371 # only if this is what we're configured to do
2372 if universe.contents["internal:process"].get("daemon"):
2374 # log before we start forking around, so the terminal gets the message
2375 log("Disassociating from the controlling terminal.")
2377 # fork off and die, so we free up the controlling terminal
2381 # switch to a new process group
2384 # fork some more, this time to free us from the old process group
2388 # reset the working directory so we don't needlessly tie up mounts
2391 # clear the file creation mask so we can bend it to our will later
2394 # redirect stdin/stdout/stderr and close off their former descriptors
2395 for stdpipe in range(3):
2397 sys.stdin = codecs.open("/dev/null", "r", "utf-8")
2398 sys.__stdin__ = codecs.open("/dev/null", "r", "utf-8")
2399 sys.stdout = codecs.open("/dev/null", "w", "utf-8")
2400 sys.stderr = codecs.open("/dev/null", "w", "utf-8")
2401 sys.__stdout__ = codecs.open("/dev/null", "w", "utf-8")
2402 sys.__stderr__ = codecs.open("/dev/null", "w", "utf-8")
2405 def create_pidfile(universe):
2406 """Write a file containing the current process ID."""
2407 pid = str(os.getpid())
2408 log("Process ID: " + pid)
2409 file_name = universe.contents["internal:process"].get("pidfile")
2411 if not os.path.isabs(file_name):
2412 file_name = os.path.join(universe.startdir, file_name)
2413 file_descriptor = codecs.open(file_name, "w", "utf-8")
2414 file_descriptor.write(pid + "\n")
2415 file_descriptor.flush()
2416 file_descriptor.close()
2419 def remove_pidfile(universe):
2420 """Remove the file containing the current process ID."""
2421 file_name = universe.contents["internal:process"].get("pidfile")
2423 if not os.path.isabs(file_name):
2424 file_name = os.path.join(universe.startdir, file_name)
2425 if os.access(file_name, os.W_OK):
2426 os.remove(file_name)
2429 def excepthook(excepttype, value, tracebackdata):
2430 """Handle uncaught exceptions."""
2432 # assemble the list of errors into a single string
2434 traceback.format_exception(excepttype, value, tracebackdata)
2437 # try to log it, if possible
2440 except Exception as e:
2441 # try to write it to stderr, if possible
2442 sys.stderr.write(message + "\nException while logging...\n%s" % e)
2445 def sighook(what, where):
2446 """Handle external signals."""
2449 message = "Caught signal: "
2451 # for a hangup signal
2452 if what == signal.SIGHUP:
2453 message += "hangup (reloading)"
2454 universe.reload_flag = True
2456 # for a terminate signal
2457 elif what == signal.SIGTERM:
2458 message += "terminate (halting)"
2459 universe.terminate_flag = True
2461 # catchall for unexpected signals
2463 message += str(what) + " (unhandled)"
2469 def override_excepthook():
2470 """Redefine sys.excepthook with our own."""
2471 sys.excepthook = excepthook
2474 def assign_sighook():
2475 """Assign a customized handler for some signals."""
2476 signal.signal(signal.SIGHUP, sighook)
2477 signal.signal(signal.SIGTERM, sighook)
2481 """This contains functions to be performed when starting the engine."""
2483 # see if a configuration file was specified
2484 if len(sys.argv) > 1:
2485 conffile = sys.argv[1]
2491 universe = Universe(conffile, True)
2493 # report any loglines which accumulated during setup
2494 for logline in universe.setup_loglines:
2496 universe.setup_loglines = []
2498 # log an initial message
2499 log("Started mudpy with command line: " + " ".join(sys.argv))
2501 # fork and disassociate
2504 # override the default exception handler so we get logging first thing
2505 override_excepthook()
2507 # set up custom signal handlers
2511 create_pidfile(universe)
2513 # pass the initialized universe back
2518 """These are functions performed when shutting down the engine."""
2520 # the loop has terminated, so save persistent data
2523 # log a final message
2524 log("Shutting down now.")
2526 # get rid of the pidfile
2527 remove_pidfile(universe)