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;;;; $Id: event.lisp 154 2006-05-14 14:26:40Z ehuelsmann $
;;;; $Source$
;;;; See LICENSE for licensing information.
(in-package :irc)
(defgeneric irc-message-event (connection message)
(:documentation "Upon receipt of an IRC message from the
connection's stream, irc-message-event will be called with the
message."))
(defmethod irc-message-event (connection (message irc-message))
(declare (ignore connection))
(apply-to-hooks message)
(client-log (connection message) message "UNHANDLED-EVENT:"))
(defgeneric default-hook (message)
(:documentation "Minimum action to be executed upon reception
of the IRC message to keep the connection, channel and user
objects in sync."))
(defmacro generate-maskmode-hooks (listmsg-class endmsg-class
tmp-symbol mode-symbol)
`(progn
(defmethod default-hook ((message ,listmsg-class))
(destructuring-bind
(target channel-name mask &optional set-by time-set)
(arguments message)
(declare (ignore target set-by time-set))
;; note: the structure currently does not allow for logging
;; set-by and time-set: the MODE message handling currently
;; does not allow that.
(let ((channel (find-channel (connection message) channel-name)))
(when channel
(unless (has-mode-p channel ',tmp-symbol)
;; start with a new list, replacing the old value later
(add-mode channel ',tmp-symbol
(make-instance 'list-value-mode
:value-type :non-user)))
;; use package-local symbol to prevent conflicts
(set-mode channel ',tmp-symbol mask)))))
(defmethod default-hook ((message ,endmsg-class))
(let ((channel (find-channel (connection message)
(car (arguments message)))))
(when channel
(let ((mode (has-mode-p channel ',tmp-symbol)))
(when mode
;; replace list
(add-mode channel ',mode-symbol mode)
(remove-mode channel ',tmp-symbol))))))))
(generate-maskmode-hooks irc-rpl_banlist-message
irc-rpl_endofbanlist-message
banlist-in-progress :ban)
(generate-maskmode-hooks irc-rpl_exceptlist-message
irc-rpl_endofexceptlist-message
exceptlist-in-progress :except)
(generate-maskmode-hooks irc-rpl_invitelist-message
irc-rpl_endofinvitelist-message
invitelist-in-progress :invite)
(defmethod default-hook ((message irc-rpl_isupport-message))
(destructuring-bind
(target &rest capabilities)
;; the last argument contains only an explanitory text
(butlast (arguments message))
(declare (ignore target))
(let* ((connection (connection message))
(current-case-mapping (case-map-name connection)))
(setf (server-capabilities connection)
(reduce #'(lambda (x y)
;; O(n^2), but we're talking small lists anyway...
;; maybe I should have chosen a hash interface
;; after all...
(if (assoc (first y) x :test #'string=)
x
(cons y x)))
(append
(mapcar #'(lambda (x)
(let ((eq-pos (position #\= x)))
(if eq-pos
(list (substring x 0 eq-pos)
(substring x (1+ eq-pos)))
(list x)))) capabilities)
(server-capabilities connection))
:initial-value '()))
(setf (channel-mode-descriptions connection)
(chanmode-descs-from-isupport (server-capabilities connection))
(nick-prefixes connection)
(nick-prefixes-from-isupport (server-capabilities connection)))
(when (not (equal current-case-mapping
(case-map-name connection)))
;; we need to re-normalize nicks and channel names
(re-apply-case-mapping connection)))))
(defmethod default-hook ((message irc-rpl_whoisuser-message))
(destructuring-bind
(target nick username hostname star realname)
(arguments message)
(declare (ignore target star))
(let ((user (find-user (connection message) nick)))
(when user
(setf (realname user) realname
(username user) username
(hostname user) hostname)))))
(defmethod default-hook ((message irc-rpl_list-message))
(destructuring-bind
(channel count topic)
(arguments message)
(let ((connection (connection message))
(user-count (parse-integer count)))
(add-channel connection (or (find-channel connection channel)
(make-channel connection
:name channel
:topic topic
:user-count user-count))))))
(defmethod default-hook ((message irc-rpl_topic-message))
(destructuring-bind
(target channel &optional topic)
(arguments message)
(declare (ignore target))
(setf (topic (find-channel (connection message) channel)) topic)))
(defmethod default-hook ((message irc-rpl_namreply-message))
(let* ((connection (connection message)))
(destructuring-bind
(nick chan-visibility channel names)
(arguments message)
(declare (ignore nick chan-visibility))
(let ((channel (find-channel connection channel)))
(setf (visibility channel)
(or (car (assoc chan-visibility
'(("=" :public) ("*" :private) ("@" :secret))
:test #'string=))
:unknown))
(unless (has-mode-p channel 'namreply-in-progress)
(add-mode channel 'namreply-in-progress
(make-instance 'list-value-mode :value-type :user)))
(dolist (nickname (tokenize-string names))
(let ((user (find-or-make-user connection
(canonicalize-nickname connection
nickname))))
(unless (equal user (user connection))
(add-user connection user)
(add-user channel user)
(set-mode channel 'namreply-in-progress user))
(let* ((mode-char (getf (nick-prefixes connection)
(elt nickname 0)))
(mode-name (when mode-char
(mode-name-from-char connection
channel mode-char))))
(when mode-name
(if (has-mode-p channel mode-name)
(set-mode channel mode-name user)
(set-mode-value (add-mode channel mode-name
(make-mode connection
channel mode-name))
user))))))))))
(defmethod default-hook ((message irc-rpl_endofnames-message))
(let* ((channel (find-channel (connection message)
(second (arguments message))))
(mode (get-mode channel 'namreply-in-progress))
(channel-users))
(remove-mode channel 'namreply-in-progress)
(maphash #'(lambda (nick user-obj)
(declare (ignore nick))
(pushnew user-obj channel-users)) (users channel))
(dolist (user (remove-if #'(lambda (x)
(member x mode)) channel-users))
(remove-user channel user))))
(defmethod default-hook ((message irc-ping-message))
(apply #'pong (connection message) (arguments message)))
(defmethod default-hook ((message irc-join-message))
(with-slots
(connection source host user arguments)
message
(destructuring-bind
(channel)
arguments
(let ((user (find-or-make-user connection source
:hostname host
:username user))
(channel (or (find-channel connection channel)
(make-channel connection :name channel))))
(when (self-message-p message)
(add-channel connection channel))
(add-user connection user)
(add-user channel user)))))
(defmethod default-hook ((message irc-topic-message))
(with-slots
(connection arguments)
message
(destructuring-bind
(channel &optional topic)
arguments
(setf (topic (find-channel connection channel)) topic))))
(defmethod default-hook ((message irc-part-message))
(with-slots
(connection arguments source)
message
(destructuring-bind
(channel &optional text)
arguments
(declare (ignore text))
(let ((channel (find-channel connection channel))
(user (find-user connection source)))
(when (and user channel)
(if (self-message-p message)
(remove-channel user channel)
(remove-user channel user)))))))
(defmethod default-hook ((message irc-quit-message))
(let* ((connection (connection message))
(user (find-user connection (source message))))
(unless (null user)
(remove-user-everywhere connection user))))
(defmethod default-hook ((message irc-rpl_channelmodeis-message))
(with-slots
(connection arguments)
message
(destructuring-bind
(target channel &rest mode-arguments)
arguments
(let* ((channel (find-channel connection channel))
(mode-changes
(when channel
(parse-mode-arguments connection channel mode-arguments
:server-p (user connection)))))
(dolist (change mode-changes)
(destructuring-bind
(op mode-name value)
change
(unless (has-mode-p channel mode-name)
(add-mode target mode-name
(make-mode connection channel mode-name)))
(funcall (if (char= #\+ op) #'set-mode #'unset-mode)
channel mode-name value)))))))
(defmethod default-hook ((message irc-mode-message))
(destructuring-bind
(target &rest arguments)
(arguments message)
(let* ((connection (connection message))
(target (or (find-channel connection target)
(find-user connection target)))
(mode-changes
(when target
(parse-mode-arguments connection target arguments
:server-p (user connection)))))
(dolist (change mode-changes)
(destructuring-bind
(op mode-name value)
change
(unless (has-mode-p target mode-name)
(add-mode target mode-name
(make-mode connection target mode-name)))
(funcall (if (char= #\+ op) #'set-mode #'unset-mode)
target mode-name value))))))
(defmethod default-hook ((message irc-nick-message))
(with-slots
(connection source host user arguments)
message
(destructuring-bind
(new-nick)
arguments
(let* ((user (find-or-make-user connection source
:hostname host
:username user)))
(change-nickname connection user new-nick)))))
(defmethod default-hook ((message irc-kick-message))
(with-slots
(connection arguments)
message
(destructuring-bind
(channel nick &optional reason)
arguments
(declare (ignore reason))
(let* ((channel (find-channel connection channel))
(user (find-user connection nick)))
(when (and user channel)
(if (self-message-p message)
(remove-channel user channel)
(remove-user channel user)))))))
(macrolet ((define-ctcp-reply-hook ((message-var message-type) &body body)
`(defmethod default-hook ((,message-var ,message-type))
(when (ctcp-request-p ,message-var)
,@body))))
(define-ctcp-reply-hook (message ctcp-time-message)
(multiple-value-bind
(second minute hour date month year day)
(get-decoded-time)
(send-irc-message
(connection message)
:notice (source message)
(make-ctcp-message
(format nil "TIME ~A"
(make-time-message second minute hour date month year day))))))
(define-ctcp-reply-hook (message ctcp-source-message)
(send-irc-message
(connection message)
:notice
(source message)
(make-ctcp-message
(format nil "SOURCE ~A:~A:~A"
*download-host*
*download-directory*
*download-file*))))
(define-ctcp-reply-hook (message ctcp-finger-message)
(let* ((user (user (connection message)))
(finger-info (if (not (zerop (length (realname user))))
(realname user)
(nickname user))))
(send-irc-message
(connection message)
:notice (source message)
(make-ctcp-message
(format nil "FINGER ~A" finger-info)))))
(define-ctcp-reply-hook (message ctcp-version-message)
(send-irc-message
(connection message)
:notice (source message)
(make-ctcp-message
(format nil "VERSION ~A" *ctcp-version*))))
(define-ctcp-reply-hook (message ctcp-ping-message)
(send-irc-message
(connection message)
:notice (source message)
(make-ctcp-message
(format nil "PING ~A" (car (last (arguments message))))))))
(defmethod irc-message-event (connection (message ctcp-dcc-chat-request-message))
(declare (ignore connection))
(apply-to-hooks message)
(client-log (connection message) message))
; (when (automatically-accept-dcc-connections (configuration (connection message)))
; (let* ((user (find-user (connection message) (source message)))
; (args (tokenize-string (trailing-argument message)))
; (remote-address (hbo-to-dotted-quad (parse-integer (fourth args))))
; (remote-port (parse-integer (fifth args) :junk-allowed t)))
; (push (make-dcc-connection :user user
; :remote-address remote-address
; :remote-port remote-port)
; *dcc-connections*))))
(defmethod irc-message-event (connection (message ctcp-dcc-send-request-message))
(declare (ignore connection))
(apply-to-hooks message)
(client-log (connection message) message))
; (when (automatically-accept-dcc-downloads (configuration (connection message)))
; (let* ((user (find-user (connection message) (source message)))
; (args (tokenize-string (trailing-argument message)))
; (filename (third args))
; (remote-address (hbo-to-dotted-quad (parse-integer (fourth args))))
; (remote-port (parse-integer (fifth args)))
; (filesize (parse-integer (sixth args) :junk-allowed t)))
; (let ((dcc-connection (make-dcc-connection :user user
; :remote-address remote-address
; :remote-port remote-port)))
; (with-open-file (stream filename :direction :output
; :if-exists :supersede)
; (write-sequence (read-message-loop dcc-connection) stream))))))
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