1 """User command functions for the mudpy engine."""
3 # Copyright (c) 2004-2019 mudpy authors. Permission to use, copy,
4 # modify, and distribute this software is granted under terms
5 # provided in the LICENSE file distributed with this software.
15 def chat(actor, parameters):
16 """Toggle chat mode."""
17 mode = actor.get("mode")
19 actor.set("mode", "chat")
20 actor.send("Entering chat mode (use $(grn)!chat$(nrm) to exit).")
22 actor.remove_facet("mode")
23 actor.send("Exiting chat mode.")
25 actor.send("Sorry, but you're already busy with something else!")
28 def create(actor, parameters):
29 """Create an element if it does not exist."""
31 message = "You must at least specify an element to create."
35 arguments = parameters.split()
36 if len(arguments) == 1:
38 if len(arguments) == 2:
39 element, filename = arguments
40 if element in actor.universe.contents:
41 message = 'The "' + element + '" element already exists.'
43 message = ('You create "' +
44 element + '" within the universe.')
45 logline = actor.owner.account.get(
47 ) + " created an element: " + element
49 logline += " in file " + filename
50 if filename not in actor.universe.files:
52 ' Warning: "' + filename + '" is not yet '
53 "included in any other file and will not be read "
54 "on startup unless this is remedied.")
55 mudpy.misc.Element(element, actor.universe, filename)
56 mudpy.misc.log(logline, 6)
57 elif len(arguments) > 2:
58 message = "You can only specify an element and a filename."
62 def delete(actor, parameters):
63 """Delete a facet from an element."""
65 message = "You must specify an element and a facet."
67 arguments = parameters.split(" ")
68 if len(arguments) == 1:
69 message = ('What facet of element "' + arguments[0]
70 + '" would you like to delete?')
71 elif len(arguments) != 2:
72 message = "You may only specify an element and a facet."
74 element, facet = arguments
75 if element not in actor.universe.contents:
76 message = 'The "' + element + '" element does not exist.'
77 elif facet not in actor.universe.contents[element].facets():
78 message = ('The "' + element + '" element has no "' + facet
81 actor.universe.contents[element].remove_facet(facet)
82 message = ('You have successfully deleted the "' + facet
83 + '" facet of element "' + element
84 + '". Try "show element ' +
85 element + '" for verification.')
89 def destroy(actor, parameters):
90 """Destroy an element if it exists."""
93 message = "You must specify an element to destroy."
95 if parameters not in actor.universe.contents:
96 message = 'The "' + parameters + '" element does not exist.'
98 actor.universe.contents[parameters].destroy()
99 message = ('You destroy "' + parameters
100 + '" within the universe.')
102 actor.owner.account.get(
104 ) + " destroyed an element: " + parameters,
110 def error(actor, input_data):
111 """Generic error for an unrecognized command word."""
113 # 90% of the time use a generic error
114 # Whitelist the random.randrange() call in bandit since it's not used for
115 # security/cryptographic purposes
116 if random.randrange(10): # nosec
117 message = '''I'm not sure what "''' + input_data + '''" means...'''
119 # 10% of the time use the classic diku error
121 message = "Arglebargle, glop-glyf!?!"
123 # try to send the error message, and log if we can't
128 'Sending a command error to user %s raised exception...\n%s' % (
129 actor.owner.account.get("name"), traceback.format_exc()))
132 def halt(actor, parameters):
133 """Halt the world."""
136 # see if there's a message or use a generic one
138 message = "Halting: " + parameters
140 message = "User " + actor.owner.account.get(
142 ) + " halted the world."
145 mudpy.misc.broadcast(message, add_prompt=False)
146 mudpy.misc.log(message, 8)
148 # set a flag to terminate the world
149 actor.universe.terminate_flag = True
152 def help(actor, parameters):
153 """List available commands and provide help for commands."""
155 # did the user ask for help on a specific command word?
156 if parameters and actor.owner:
158 # is the command word one for which we have data?
159 command = mudpy.misc.find_command(parameters)
161 # only for allowed commands
162 if actor.can_run(command):
164 # add a description if provided
165 description = command.get("description")
167 description = "(no short description provided)"
168 if command.get("administrative"):
172 output = "%s%s$(nrm) - %s$(eol)$(eol)" % (
173 output, command.subkey, description)
175 # add the help text if provided
176 help_text = command.get("help")
178 help_text = "No help is provided for this command."
181 # list related commands
182 see_also = command.get("see_also")
185 for item in see_also:
186 if item in actor.universe.groups["command"]:
187 command = actor.universe.groups["command"][item]
188 if actor.can_run(command):
190 really_see_also += ", "
191 if command.get("administrative"):
192 really_see_also += "$(red)"
194 really_see_also += "$(grn)"
195 really_see_also += item + "$(nrm)"
197 output += "$(eol)$(eol)See also: " + really_see_also
199 # no data for the requested command word
201 output = "That is not an available command."
203 # no specific command word was indicated
207 output = ("These are the commands available to you [brackets indicate "
208 "optional portion]:$(eol)$(eol)")
210 # list command names in alphabetical order
211 for command_name, command in sorted(
212 actor.universe.groups["command"].items()):
214 # skip over disallowed commands
215 if actor.can_run(command):
217 # start incrementing substrings
218 for position in range(1, len(command_name) + 1):
220 # we've found our shortest possible abbreviation
221 candidate = mudpy.misc.find_command(
222 command_name[:position])
224 if candidate.subkey == command_name:
226 except AttributeError:
229 # use square brackets to indicate optional part of command name
230 if position < len(command_name):
231 abbrev = "%s[%s]" % (
232 command_name[:position], command_name[position:])
234 abbrev = command_name
236 # supply a useful default if the short description is missing
237 description = command.get(
238 "description", "(no short description provided)")
240 # administrative command names are in red, others in green
241 if command.get("administrative"):
246 # format the entry for this command
247 output = "%s $(%s)%s$(nrm) - %s$(eol)" % (
248 output, color, abbrev, description)
250 # add a footer with instructions on getting additional information
251 output = ('%s $(eol)Enter "help COMMAND" for help on a command named '
252 '"COMMAND".' % output)
254 # send the accumulated output to the user
258 def look(actor, parameters):
261 actor.send("You can't look at or in anything yet.")
263 actor.look_at(actor.get("location"))
266 def move(actor, parameters):
267 """Move the avatar in a given direction."""
268 for portal in sorted(
269 actor.universe.contents[actor.get("location")].portals()):
270 if portal.startswith(parameters):
271 actor.move_direction(portal)
273 actor.send("You cannot go that way.")
276 def preferences(actor, parameters):
277 """List, view and change actor preferences."""
279 # Escape replacement macros in preferences
280 parameters = mudpy.misc.escape_macros(parameters)
283 arguments = parameters.split()
284 allowed_prefs = set()
286 user_config = actor.universe.contents.get("mudpy.user")
288 base_prefs = user_config.get("pref_allow", [])
289 allowed_prefs.update(base_prefs)
290 if actor.owner.account.get("administrator"):
291 allowed_prefs.update(user_config.get("pref_admin", []))
293 message += "These are your current preferences:"
295 # color-code base and admin prefs
296 for pref in sorted(allowed_prefs):
297 if pref in base_prefs:
301 message += ("$(eol) $(%s)%s$(nrm) - %s" % (
302 color, pref, actor.owner.account.get(pref, "<not set>")))
304 elif arguments[0] not in allowed_prefs:
306 'Preference "%s" does not exist. Try the `preferences` command by '
307 "itself for a list of valid preferences." % arguments[0])
308 elif len(arguments) == 1:
309 message += "%s" % actor.owner.account.get(arguments[0], "<not set>")
312 value = " ".join(arguments[1:])
314 actor.owner.account.set(pref, value)
315 message += 'Preference "%s" set to "%s".' % (pref, value)
318 'Preference "%s" cannot be set to type "%s".' % (
323 def quit(actor, parameters):
324 """Leave the world and go back to the main menu."""
326 actor.owner.state = "main_utility"
327 actor.owner.deactivate_avatar()
330 def reload(actor, parameters):
331 """Reload all code modules, configs and data."""
334 # let the user know and log
335 actor.send("Reloading all code modules, configs and data.")
338 actor.owner.account.get("name") + " reloaded the world.",
342 # set a flag to reload
343 actor.universe.reload_flag = True
346 def say(actor, parameters):
347 """Speak to others in the same area."""
349 # check for replacement macros and escape them
350 parameters = mudpy.misc.escape_macros(parameters)
352 # if the message is wrapped in quotes, remove them and leave contents
354 if parameters.startswith('"') and parameters.endswith('"'):
355 message = parameters[1:-1]
358 # otherwise, get rid of stray quote marks on the ends of the message
360 message = parameters.strip('''"'`''')
363 # the user entered a message
366 # match the punctuation used, if any, to an action
367 if "mudpy.linguistic" in actor.universe.contents:
368 actions = actor.universe.contents[
369 "mudpy.linguistic"].get("actions", {})
370 default_punctuation = (actor.universe.contents[
371 "mudpy.linguistic"].get("default_punctuation", "."))
374 default_punctuation = "."
377 # reverse sort punctuation options so the longest match wins
378 for mark in sorted(actions.keys(), reverse=True):
379 if not literal and message.endswith(mark):
380 action = actions[mark]
383 # add punctuation if needed
385 action = actions[default_punctuation]
387 literal or unicodedata.category(message[-1]) == "Po"
389 message += default_punctuation
391 # failsafe checks to avoid unwanted reformatting and null strings
392 if message and not literal:
394 # decapitalize the first letter to improve matching
395 message = message[0].lower() + message[1:]
397 # iterate over all words in message, replacing typos
398 if "mudpy.linguistic" in actor.universe.contents:
399 typos = actor.universe.contents[
400 "mudpy.linguistic"].get("typos", {})
403 words = message.split()
404 for index in range(len(words)):
406 while unicodedata.category(word[0]) == "Po":
408 while unicodedata.category(word[-1]) == "Po":
410 if word in typos.keys():
411 words[index] = words[index].replace(word, typos[word])
412 message = " ".join(words)
414 # capitalize the first letter
415 message = message[0].upper() + message[1:]
419 actor.echo_to_location(
420 actor.get("name") + " " + action + 's, "' + message + '"'
422 actor.send("You " + action + ', "' + message + '"')
424 # there was no message
426 actor.send("What do you want to say?")
429 def c_set(actor, parameters):
430 """Set a facet of an element."""
432 message = "You must specify an element, a facet and a value."
434 arguments = parameters.split(" ", 2)
435 if len(arguments) == 1:
436 message = ('What facet of element "' + arguments[0]
437 + '" would you like to set?')
438 elif len(arguments) == 2:
439 message = ('What value would you like to set for the "' +
440 arguments[1] + '" facet of the "' + arguments[0]
443 element, facet, value = arguments
444 if element not in actor.universe.contents:
445 message = 'The "' + element + '" element does not exist.'
448 actor.universe.contents[element].set(facet, value)
449 except PermissionError:
450 message = ('The "%s" element is kept in read-only file '
451 '"%s" and cannot be altered.' %
452 (element, actor.universe.contents[
453 element].origin.source))
455 message = ('Value "%s" of type "%s" cannot be coerced '
456 'to the correct datatype for facet "%s".' %
457 (value, type(value), facet))
459 message = ('You have successfully (re)set the "' + facet
460 + '" facet of element "' + element
461 + '". Try "show element ' +
462 element + '" for verification.')
466 def show(actor, parameters):
467 """Show program data."""
469 arguments = parameters.split()
471 message = "What do you want to show?"
472 elif arguments[0] == "version":
473 message = repr(actor.universe.versions)
474 elif arguments[0] == "time":
475 message = "%s increments elapsed since the world was created." % (
476 str(actor.universe.groups["internal"]["counters"].get("elapsed")))
477 elif arguments[0] == "groups":
478 message = "These are the element groups:$(eol)"
479 groups = list(actor.universe.groups.keys())
482 message += "$(eol) $(grn)" + group + "$(nrm)"
483 elif arguments[0] == "files":
484 message = "These are the current files containing the universe:$(eol)"
485 filenames = sorted(actor.universe.files)
486 for filename in filenames:
487 if actor.universe.files[filename].is_writeable():
491 message += ("$(eol) $(red)(%s) $(grn)%s$(nrm)" %
493 if actor.universe.files[filename].flags:
494 message += (" $(yel)[%s]$(nrm)" %
495 ",".join(actor.universe.files[filename].flags))
496 elif arguments[0] == "group":
497 if len(arguments) != 2:
498 message = "You must specify one group."
499 elif arguments[1] in actor.universe.groups:
500 message = ('These are the elements in the "' + arguments[1]
504 actor.universe.groups[arguments[1]][x].key
505 ) for x in actor.universe.groups[arguments[1]].keys()
508 for element in elements:
509 message += "$(eol) $(grn)" + element + "$(nrm)"
511 message = 'Group "' + arguments[1] + '" does not exist.'
512 elif arguments[0] == "file":
513 if len(arguments) != 2:
514 message = "You must specify one file."
515 elif arguments[1] in actor.universe.files:
516 message = ('These are the nodes in the "' + arguments[1]
518 elements = sorted(actor.universe.files[arguments[1]].data)
519 for element in elements:
520 message += "$(eol) $(grn)" + element + "$(nrm)"
522 message = 'File "%s" does not exist.' % arguments[1]
523 elif arguments[0] == "element":
524 if len(arguments) != 2:
525 message = "You must specify one element."
526 elif arguments[1].strip(".") in actor.universe.contents:
527 element = actor.universe.contents[arguments[1].strip(".")]
528 message = ('These are the properties of the "' + arguments[1]
529 + '" element (in "' + element.origin.source
531 facets = element.facets()
532 for facet in sorted(facets):
533 message += ("$(eol) $(grn)%s: $(red)%s$(nrm)" %
534 (facet, str(facets[facet])))
536 message = 'Element "' + arguments[1] + '" does not exist.'
537 elif arguments[0] == "result":
538 if len(arguments) < 2:
539 message = "You need to specify an expression."
542 # there is no other option than to use eval() for this, since
543 # its purpose is to evaluate arbitrary expressions, so do what
544 # we can to secure it and whitelist it for bandit analysis
545 message = repr(eval( # nosec
546 " ".join(arguments[1:]),
547 {"mudpy": mudpy, "universe": actor.universe}))
548 except Exception as e:
549 message = ("$(red)Your expression raised an exception...$(eol)"
550 "$(eol)$(bld)%s$(nrm)" % e)
551 elif arguments[0] == "log":
552 if len(arguments) == 4:
553 if re.match(r"^\d+$", arguments[3]) and int(arguments[3]) >= 0:
554 stop = int(arguments[3])
559 if len(arguments) >= 3:
560 if re.match(r"^\d+$", arguments[2]) and int(arguments[2]) > 0:
561 start = int(arguments[2])
566 if len(arguments) >= 2:
567 if (re.match(r"^\d+$", arguments[1])
568 and 0 <= int(arguments[1]) <= 9):
569 level = int(arguments[1])
572 elif 0 <= actor.owner.account.get("loglevel", 0) <= 9:
573 level = actor.owner.account.get("loglevel", 0)
576 if level > -1 and start > -1 and stop > -1:
577 message = mudpy.misc.get_loglines(level, start, stop)
579 message = ("When specified, level must be 0-9 (default 1), "
580 "start and stop must be >=1 (default 10 and 1).")
582 message = '''I don't know what "''' + parameters + '" is.'