2 ;;;; $Id: logger.lisp,v 1.11 2003/12/16 21:19:56 krosenberg Exp $
4 ;;;; Purpose: A IRC logging bot
5 ;;;; Author: Kevin Rosenberg
7 (in-package irc-logger)
9 (defvar *daemon-monitor-process* nil "Process of background monitor.")
12 ((name :initarg :name :reader name
13 :documentation "Name of channel.")
14 (streams :initarg :streams :reader streams
15 :documentation "List of output streams.")
16 (output-root :initarg :output-root :reader output-root)
17 (current-output-names :initarg :current-output-names :accessor current-output-names)))
21 ((connection :initarg :connection :accessor connection
22 :documentation "IRC connection object.")
23 (handler :initform nil :accessor handler
24 :documentation "Background handler process.")
25 (nick :initarg :nick :reader nickname
26 :documentation "Nickname of the bot.")
27 (password :initarg :password :reader password
28 :documentation "Nickname's nickserver password.")
29 (server :initarg :server :reader server
30 :documentation "Connected IRC server.")
31 (channel-names :initarg :channel-names :accessor channel-names
32 :documentation "List of channel names.")
33 (realname :initarg :realname :reader realname
34 :documentation "Realname for cl-irc")
35 (username :initarg :username :reader username
36 :documentation "Username for cl-irc")
37 (logging-stream :initarg :logging-stream :reader logging-stream
38 :documentation "logging-stream for cl-irc.")
39 (channels :initarg :channels :accessor channels
40 :documentation "List of channels.")
41 (user-output :initarg :user-output :reader user-output
43 "Output parameter from user, maybe stream or pathname.")
44 (unichannel :initarg :unichannel :reader unichannel :type boolean
45 :documentation "T if user-output is directory for individual channel output.")
46 (formats :initarg :formats :reader formats
48 "A list of output formats.")
49 (async :initarg :async :reader async
51 "Whether to use async")
52 (last-pong :initform nil :accessor last-pong
54 "utime of last pong message")
55 (private-log :initarg :private-log :reader private-log
56 :documentation "Pathname of the private log file for the daemon.")
57 (unknown-log :initarg :unknown-log :reader unknown-log
58 :documentation "Pathname of the log file for unknown messages.")
59 (private-log-stream :initarg :private-log-stream :reader private-log-stream
60 :documentation "Stream of the private log file for the daemon.")
61 (unknown-log-stream :initarg :unknown-log-stream :reader unknown-log-stream
62 :documentation "Stream of the log file for unknown messages.")
63 (monitor-events :initform nil :accessor monitor-events
64 :documentation "List of events for the monitor to process.")
65 (warning-message-utime :initform nil :accessor warning-message-utime
67 "Time of last, potentially active, warning message.")))
69 (defvar *loggers* nil "List of active loggers.")
71 (defparameter *user-address-scanner*
75 (:greedy-repetition 1 nil :non-whitespace-char-class)))
76 :case-insensitive-mode t))
78 (defun find-logger-with-nick (nick)
79 (find nick (the list *loggers*) :test #'string-equal :key #'nickname))
81 (defun find-logger-with-connection (conn)
82 (find conn (the list *loggers*) :test #'eq :key #'connection))
84 (defun canonicalize-channel-name (name)
85 (string-left-trim '(#\#) name))
87 (defun find-channel-with-name (logger name)
88 (find name (the list (channels logger)) :test #'string-equal :key #'name))
90 (defun make-output-name (name year month day)
91 (format nil "~A-~4,'0D.~2,'0D.~2,'0D" (canonicalize-channel-name name)
94 (defun make-output-name-utime (name utime)
96 (second minute hour day-of-month month year day-of-week daylight-p zone)
97 (decode-universal-time utime)
98 (declare (ignore second minute hour day-of-week daylight-p zone))
99 (make-output-name name year month day-of-month)))
101 (defgeneric write-file-header (format channel-name stream))
103 (defmethod write-file-header ((format t) channel-name stream)
104 (declare (ignore channel-name stream))
107 (defgeneric write-file-footer (format channel-name stream))
109 (defmethod write-file-footer ((format t) channel-name stream)
110 (declare (ignore channel-name stream))
113 (defun %log-file-path (output-root channel-name year month day type)
115 :defaults output-root
116 :directory (append (pathname-directory output-root)
118 (string-left-trim '(#\#) channel-name)
119 (format nil "~4,'0D-~2,'0D" year month)))
120 :name (make-output-name channel-name year month day)
123 (defgeneric log-file-path (output-root channel-name year month day format))
125 (defmethod log-file-path (output-root channel-name year month day
127 (%log-file-path output-root channel-name year month day "raw"))
129 (defmethod log-file-path (output-root channel-name year month day (format (eql :sexp)))
130 (%log-file-path output-root channel-name year month day "sexp"))
132 (defmethod log-file-path (output-root channel-name year month day (format (eql :text)))
133 (%log-file-path output-root channel-name year month day "txt"))
135 (defmethod log-file-path (output-root channel-name year month day (format string))
136 (%log-file-path output-root channel-name year month day format))
139 (defun log-file-path-utime (output-root channel-name format utime)
141 (second minute hour day month year day-of-week daylight-p zone)
142 (decode-universal-time utime)
143 (declare (ignore second minute hour day-of-week daylight-p zone))
144 (log-file-path output-root channel-name year month day format)))
146 (defun get-stream (channel istream)
147 (elt (streams channel) istream))
149 (defun (setf get-stream) (value channel istream)
150 (setf (elt (streams channel) istream) value))
152 (defun get-format (logger istream)
153 (elt (formats logger) istream))
155 (defun get-output-name (channel istream)
156 (elt (current-output-names channel) istream))
158 (defun (setf get-output-name) (value channel istream)
159 (setf (elt (current-output-names channel) istream) value))
161 (defun ensure-output-stream-for-unichannel (utime logger channel istream)
162 (let ((name (make-output-name-utime (name channel) utime)))
163 (unless (string= name (get-output-name channel istream))
164 (when (get-stream channel istream)
165 (write-file-footer (get-format logger istream)
167 (get-stream channel istream))
168 (close (get-stream channel istream)))
169 (setf (get-output-name channel istream) name)
170 (let ((path (log-file-path-utime (output-root channel) (name channel)
171 (get-format logger istream) utime)))
172 (unless (probe-file path)
173 (ensure-directories-exist path)
174 (setf (get-stream channel istream)
175 (open path :direction :output :if-exists :error
176 :if-does-not-exist :create))
177 (write-file-header (get-format logger istream)
179 (get-stream channel istream))
180 (close (get-stream channel istream)))
181 (setf (get-stream channel istream)
182 (open path :direction :output :if-exists :append
183 :if-does-not-exist :create))))))
185 (defun ensure-output-stream (utime logger channel istream)
186 "Ensures that *output-stream* is correct."
188 ((streamp (user-output logger))
189 (unless (get-stream channel istream)
190 (setf (get-stream channel istream) (user-output logger))))
191 ((pathnamep (user-output logger))
194 (ensure-output-stream-for-unichannel utime logger channel istream))
196 (setf (get-stream channel istream)
197 (open (user-output logger) :direction :output :if-exists :append
198 :if-does-not-exist :create)))))))
200 (defun format-date-time (utime)
202 (second minute hour day-of-month month year day-of-week daylight-p zone)
203 (decode-universal-time utime)
204 (declare (ignore day-of-week daylight-p zone))
205 (format nil "~4,'0D/~2,'0D/~2,'0D ~2,'0D:~2,'0D:~2,'0D" year month day-of-month hour minute second)))
207 (defun format-utime (utime)
209 (second minute hour day-of-month month year day-of-week daylight-p zone)
210 (decode-universal-time utime)
211 (declare (ignore day-of-month month year day-of-week daylight-p zone))
212 (format nil "~2,'0D:~2,'0D:~2,'0D" hour minute second)))
214 (defun format-utime-short (utime)
216 (second minute hour day-of-month month year day-of-week daylight-p zone)
217 (decode-universal-time utime)
218 (declare (ignore second day-of-month month year day-of-week daylight-p zone))
219 (format nil "~2,'0D:~2,'0D" hour minute)))
221 (defun user-address (msg)
222 (let ((split (split *user-address-scanner* (raw-message-string msg)
223 :with-registers-p t)))
228 (defun need-user-address? (type)
230 ((:action :privmsg :names :rpl_topic)
235 (defgeneric %output-event (format stream utime type channel source text msg
238 (defmethod %output-event ((format t) stream utime type channel source text
240 (%output-event :raw stream utime type channel source text msg unichannel))
242 (defmethod %output-event ((format (eql :raw)) stream utime type channel source
244 (declare (ignore utime type channel source text text unichannel))
246 (format stream "~S~%"
247 (string-right-trim '(#\return) (raw-message-string msg)))))
249 (uffi:def-foreign-type time-t :unsigned-long)
250 (uffi:def-function ("ctime" c-ctime)
254 (defconstant +posix-epoch+
255 (encode-universal-time 0 0 0 1 1 1970 0))
257 (defun posix-time-to-utime (time)
258 (+ time +posix-epoch+))
260 (defun last-sexp-field (type msg)
265 (trailing-argument msg))
266 ((eq type :rpl_topicwhotime)
267 (when (stringp (car (last (arguments msg))))
268 (let ((secs (parse-integer (car (last (arguments msg))) :junk-allowed t)))
270 (posix-time-to-utime secs)))))
271 ((need-user-address? type)
272 (user-address msg))))
274 (defmethod %output-event ((format (eql :sexp)) stream utime type channel source text
276 (let ((*print-circle* nil)
277 (*print-pretty* nil))
279 (format stream "(~S ~S ~S ~S ~S)~%" utime type source text (last-sexp-field type msg))
280 (format stream "(~S ~S ~S ~S ~S ~S)~%" utime type source channel text
281 (last-sexp-field type msg)))))
283 (defmethod %output-event ((format (eql :text)) stream utime type channel
284 source text msg unichannel)
285 (format stream "~A " (format-utime utime))
286 (when (and (null unichannel) channel)
287 (format stream "[~A] " channel))
289 (let ((user-address (when (and msg (need-user-address? type)) (user-address msg))))
292 (format stream "<~A> ~A" source text))
294 (format stream "*~A* ~A" source text))
296 (format stream "~A [~A] has joined ~A" source user-address channel))
298 (format stream "-!- ~A [~A] has left ~A" source user-address channel))
300 (format stream "-!- ~A is now known as ~A" source text))
302 (format stream "-!- ~A [~A] has been kicked from ~A" source user-address channel))
304 (format stream "-!- ~A [~A] has quit [~A]" source user-address (if text text "")))
306 (format stream "-!- ~A has set mode ~A" source text))
308 (format stream "-!- ~A changed the topic of ~A to: ~A" source channel text))
310 (format stream "-~A:~A- ~A" source channel text))
312 (format stream "-!!!- ~A" text))
314 (format stream "-!- names: ~A" text))
316 (format stream "-!- topic: ~A" text))
318 (warn "Unhandled msg type ~A." type))))
319 (write-char #\Newline stream))
321 (defun output-event-for-a-stream (msg type channel text logger istream)
322 (ensure-output-stream (received-time msg) logger channel istream)
323 (%output-event (get-format logger istream) (get-stream channel istream)
324 (received-time msg) type (name channel) (source msg) text msg
326 (force-output (get-stream channel istream)))
328 (defun log-daemon-message (logger fmt &rest args)
329 (let ((text (apply #'format nil fmt args))
330 (time (get-universal-time)))
331 (format (get-private-log-stream logger)
332 "~A ~A~%" (format-date-time time) text)
333 (force-output (get-private-log-stream logger))
334 (dolist (channel (channels logger))
335 (dotimes (istream (length (formats logger)))
336 (ensure-output-stream time logger channel istream)
337 (%output-event (get-format logger istream)
338 (get-stream channel istream)
339 time :daemon nil nil text nil
341 (force-output (get-stream channel istream))))))
344 (defun output-event (msg type channel-name &optional text)
346 (dolist (logger *loggers*)
348 ((:error :server :kill)
349 (format (get-private-log-stream logger)
351 (format-date-time (received-time msg))
352 (raw-message-string msg))
353 (force-output (get-private-log-stream logger)))
355 ;; send to all channels that a nickname is joined
356 (let* ((user (find-user (connection logger)
359 (:quit (source msg)))))
360 (channels (when user (cl-irc::channels user))))
361 (dolist (channel (mapcar
362 #'(lambda (name) (find-channel-with-name logger name))
363 (mapcar #'cl-irc::name channels)))
365 (dotimes (i (length (formats logger)))
366 (output-event-for-a-stream msg type channel text logger i))))))
368 ;; msg contains channel name
369 (let* ((channel (find-channel-with-name logger channel-name)))
371 (dotimes (i (length (formats logger)))
372 (output-event-for-a-stream msg type channel text logger i))))))))
374 (defun get-private-log-stream (logger)
375 (or (private-log-stream logger) *standard-output*))
377 (defun get-unknown-log-stream (logger)
378 (or (unknown-log-stream logger) *standard-output*))
380 (defun privmsg-hook (msg)
381 (let ((logger (find-logger-with-connection (connection msg)))
382 (channel (first (arguments msg))))
384 ((equal channel (nickname logger))
386 (get-private-log-stream logger)
388 (format-date-time (get-universal-time))
389 (raw-message-string msg))
390 (force-output (get-private-log-stream logger)))
392 (output-event msg :privmsg channel (trailing-argument msg))))))
394 (defun action-hook (msg)
395 (output-event msg :action (first (arguments msg))
396 (subseq (trailing-argument msg) 8
397 (- (length (trailing-argument msg)) 1))))
399 (defun nick-hook (msg)
400 (output-event msg :nick nil (trailing-argument msg)))
402 (defun part-hook (msg)
403 (output-event msg :part (first (arguments msg))))
405 (defun quit-hook (msg)
406 (output-event msg :quit nil (trailing-argument msg)))
408 (defun join-hook (msg)
409 (output-event msg :join (trailing-argument msg)))
411 (defun kick-hook (msg)
412 (let ((logger (find-logger-with-connection (connection msg)))
413 (channel (first (arguments msg)))
414 (who-kicked (second (arguments msg))))
415 (output-event msg :kick channel who-kicked)
416 (when (string-equal (nickname logger) who-kicked)
418 (get-private-log-stream logger)
419 "~A Logging daemon ~A has been kicked from ~A (~A)~%"
420 (format-date-time (received-time msg))
423 (trailing-argument msg))
424 (force-output (get-private-log-stream logger))
426 (remove-channel-logger logger channel)
428 (add-channel-logger logger channel)
430 (get-private-log-stream logger)
432 (format-date-time (received-time msg))
434 (force-output (get-private-log-stream logger)))))
436 (defun notice-hook (msg)
437 (let ((logger (find-logger-with-connection (connection msg)))
438 (channel (first (arguments msg))))
440 ((and (string-equal (source msg) "NickServ")
441 (string-equal channel (nickname logger))
442 (string-equal "owned by someone else" (trailing-argument msg)))
444 (privmsg (connection msg) (source msg) (format nil "IDENTIFY ~A" (password logger)))
446 (get-private-log-stream logger)
447 "~A NickServ asks for identity with connection not found.~%"
448 (format-date-time (received-time msg)))))
449 ((equal channel (nickname logger))
451 (get-private-log-stream logger)
453 (format-date-time (get-universal-time))
454 (raw-message-string msg))
455 (force-output (get-private-log-stream logger)))
457 (output-event msg :notice channel (trailing-argument msg))))))
459 (defun ping-hook (msg)
460 (let ((logger (find-logger-with-connection (connection msg))))
461 (pong (connection msg) (server logger))
462 #+debug (format *standard-output* "Sending pong to ~A~%" (server logger))))
464 (defun pong-hook (msg)
465 (let ((logger (find-logger-with-connection (connection msg))))
466 (setf (last-pong logger) (received-time msg))))
468 (defun topic-hook (msg)
469 (output-event msg :topic (first (arguments msg)) (trailing-argument msg)))
471 (defun mode-hook (msg)
472 (output-event msg :mode (first (arguments msg))
473 (format nil "~{~A~^ ~}" (cdr (arguments msg)))))
475 (defun rpl_namreply-hook (msg)
476 (output-event msg :names (third (arguments msg))
477 (trailing-argument msg)))
479 (defun rpl_endofnames-hook (msg)
480 (declare (ignore msg))
481 ;; nothing to do for this message
484 (defun rpl_topic-hook (msg)
485 (output-event msg :rpl_topic (format nil "~{~A~^ ~}" (arguments msg))
486 (trailing-argument msg)))
488 (defun rpl_topicwhotime-hook (msg)
489 (output-event msg :rpl_topicwhotime
490 (second (arguments msg))
491 (third (arguments msg))))
494 (defun invite-hook (msg)
495 (let ((logger (find-logger-with-connection (connection msg))))
497 (get-private-log-stream logger)
499 (format-date-time (get-universal-time))
500 (raw-message-string msg))
501 (force-output (get-private-log-stream logger))))
504 (defun make-a-channel (name formats output)
505 (make-instance 'channel
507 :streams (make-array (length formats) :initial-element nil)
508 :output-root (when (and (pathnamep output)
509 (null (pathname-name output)))
511 :current-output-names (make-array (length formats)
512 :initial-element nil)))
514 (defun make-channels (names formats output)
515 (loop for i from 0 to (1- (length names))
516 collect (make-a-channel (elt names i) formats output)))
518 (defun is-unichannel-output (user-output)
519 "Returns T if output is setup for a single channel directory structure."
520 (and (pathnamep user-output) (null (pathname-name user-output))))
522 (defun do-connect-and-join (nick server username realname logging-stream channels)
523 (let ((conn (connect :nickname nick :server server
524 :username username :realname realname
525 :logging-stream logging-stream)))
526 (mapc #'(lambda (channel) (join conn channel)) channels)
527 (add-hook conn 'irc::irc-privmsg-message 'privmsg-hook)
528 (add-hook conn 'irc::ctcp-action-message 'action-hook)
529 (add-hook conn 'irc::irc-nick-message 'nick-hook)
530 (add-hook conn 'irc::irc-part-message 'part-hook)
531 (add-hook conn 'irc::irc-quit-message 'quit-hook)
532 (add-hook conn 'irc::irc-join-message 'join-hook)
533 (add-hook conn 'irc::irc-kick-message 'kick-hook)
534 (add-hook conn 'irc::irc-mode-message 'mode-hook)
535 (add-hook conn 'irc::irc-topic-message 'topic-hook)
536 (add-hook conn 'irc::irc-notice-message 'notice-hook)
537 (add-hook conn 'irc::irc-error-message 'error-hook)
538 (add-hook conn 'irc::irc-ping-message 'ping-hook)
539 (add-hook conn 'irc::irc-pong-message 'pong-hook)
540 (add-hook conn 'irc::irc-kill-message 'kill-hook)
541 (add-hook conn 'irc::irc-invite-message 'invite-hook)
542 (add-hook conn 'irc::irc-rpl_killdone-message 'warning-hook)
543 (add-hook conn 'irc::irc-rpl_closing-message 'warning-hook)
544 (add-hook conn 'irc::irc-rpl_topic-message 'rpl_topic-hook)
545 (add-hook conn 'irc::irc-rpl_namreply-message 'rpl_namreply-hook)
546 (add-hook conn 'irc::irc-rpl_endofnames-message 'rpl_endofnames-hook)
547 (add-hook conn 'irc::irc-rpl_topicwhotime-message 'rpl_topicwhotime-hook)
550 (defmethod cl-irc::irc-message-event :around ((msg cl-irc::irc-message))
551 (let ((result (call-next-method msg)))
553 ((or irc::irc-privmsg-message irc::ctcp-action-message irc::irc-nick-message
554 irc::irc-part-message irc::irc-quit-message irc::irc-join-message
555 irc::irc-kick-message irc::irc-mode-message irc::irc-topic-message
556 irc::irc-notice-message irc::irc-error-message irc::irc-ping-message
557 irc::irc-pong-message irc::irc-kill-message irc::irc-invite-message
558 irc::irc-rpl_killdone-message irc::irc-rpl_closing-message
559 irc::irc-rpl_topic-message irc::irc-rpl_namreply-message
560 irc::irc-rpl_endofnames-message irc::irc-rpl_topicwhotime-message
561 irc::irc-rpl_motd-message irc::irc-rpl_motdstart-message
562 irc::irc-rpl_endofmotd-message)
566 (let ((logger (find-logger-with-connection (connection msg))))
567 (format (get-unknown-log-stream
568 (find-logger-with-connection (connection msg)))
570 (format-date-time (received-time msg ))
571 (raw-message-string msg))
572 (force-output (get-unknown-log-stream logger)))))
575 (defun create-logger (nick server &key channels output password
576 realname username async
577 private-log unknown-log
578 (logging-stream t) (formats '(:text)))
579 "OUTPUT may be a pathname or a stream"
582 (if (and channels (atom channels))
583 (setq channels (list channels)))
585 (setq formats (list formats)))
587 (setq output (parse-namestring output)))
588 (let* ((conn (do-connect-and-join nick server username realname logging-stream channels))
589 (logger (make-instance
595 :channels (make-channels channels formats output)
596 :channel-names channels
600 :logging-stream logging-stream
603 :private-log private-log
604 :unknown-log unknown-log
605 :private-log-stream (when private-log
606 (open private-log :direction :output
608 :if-does-not-exist :create))
609 :unknown-log-stream (when unknown-log
610 (open unknown-log :direction :output
612 :if-does-not-exist :create))
613 :unichannel (is-unichannel-output output))))
614 (unless *daemon-monitor-process*
615 (setq *daemon-monitor-process* (cl-irc::start-process 'daemon-monitor "logger-monitor")))
618 (defun start-logger (logger async)
620 (setf (handler logger)
621 (start-background-message-handler (connection logger)))
622 (read-message-loop (connection logger))))
624 (defun remove-logger (nick)
625 "Quit the active connection with nick and remove from active list."
626 (let ((logger (find-logger-with-nick nick)))
630 "~A No active connection found with nick ~A [remove-logger].~%"
631 (format-date-time (get-universal-time))
635 (ignore-errors (irc:quit (connection logger) ""))
636 (stop-background-message-handler (handler logger))
638 (dolist (channel (channels logger))
639 (let ((c (connection logger)))
641 (ignore-errors (remove-channel c (find-channel c (name channel)))))))
642 (when (private-log-stream logger)
643 (close (private-log-stream logger)))
644 (when (unknown-log-stream logger)
645 (close (unknown-log-stream logger)))
648 (delete nick *loggers* :test #'string-equal :key #'nickname))
651 (defun add-logger (nick server &key channels output (password "")
652 realname username private-log unknown-log
653 (logging-stream t) (async t)
655 (when (find-logger-with-nick nick)
657 (get-private-log-stream (find-logger-with-nick nick))
658 "~A Closing previously active connection [add-logger].~%"
659 (format-date-time (get-universal-time)))
660 (ignore-errors (remove-logger nick)))
661 (let ((logger (create-logger nick server :channels channels :output output
662 :logging-stream logging-stream :password password
663 :realname realname :username username
664 :private-log private-log
665 :unknown-log unknown-log
668 (push logger *loggers*)
669 (start-logger logger async)
672 (defun add-channel-logger (logger channel-name)
674 ((find-channel-with-name logger channel-name)
675 (format (get-private-log-stream logger)
676 "~A Channel ~A already in logger ~A.~%"
677 (format-date-time (get-universal-time))
679 (force-output (get-private-log-stream logger))
682 (let ((channel (make-a-channel channel-name (formats logger) (user-output logger))))
683 (join (connection logger) channel-name)
684 (push channel (channels logger))
685 (push channel-name (channel-names logger))))))
687 (defun remove-channel-logger (logger channel-name)
688 (let ((channel (find-channel-with-name logger channel-name)))
691 (part (connection logger) channel-name)
692 (dotimes (i (length (streams channel)))
693 (when (streamp (get-stream channel i))
694 (close (get-stream channel i))
695 (setf (get-stream channel i) nil)))
696 (setf (channels logger) (delete channel-name (channels logger)
699 (setf (channel-names logger) (delete channel-name (channel-names logger)
700 :test #'string-equal))
704 (get-private-log-stream logger)
705 "~A Channel name ~A not found in logger ~A.~%"
706 (format-date-time (get-universal-time))
710 (defun add-hook-logger (logger class hook)
711 (add-hook (connection logger) class hook))
713 (defun remove-hook-logger (logger class hook)
714 (remove-hook (connection logger) class hook))
716 (defvar *warning-message-utime* nil)
718 (defun kill-hook (msg)
719 (let ((target (second (arguments msg)))
720 (logger (find-logger-with-connection (connection msg))))
721 (when (and (stringp target)
722 (string-equal target (nickname logger)))
723 (setf (warning-message-utime logger) (received-time msg)))
724 (format (get-private-log-stream logger)
726 (format-date-time (received-time msg))
728 (force-output (get-private-log-stream logger))))
730 (defun error-hook (msg)
731 (let ((text (trailing-argument msg))
732 (logger (find-logger-with-connection (connection msg))))
733 (when (and (stringp text)
734 (zerop (search (format nil "Closing Link: ~A" (nickname logger)) text)))
735 (setf (warning-message-utime logger) (received-time msg)))
736 (output-event msg :error nil (trailing-argument msg))))
738 (defun warning-hook (msg)
739 (let ((logger (find-logger-with-connection (connection msg))))
740 (output-event msg :server
741 (format nil "~{~A~^ ~} ~A)"
743 (trailing-argument msg)))
745 (setf (warning-message-utime logger) (get-universal-time)))))
747 (defun daemon-sleep (seconds)
748 #-allegro (sleep seconds)
749 #+allegro (mp:process-sleep seconds))
751 (defun log-disconnection (logger)
752 ;; avoid generating too many reconnect messages in the logs
753 (when (or (null (warning-message-utime logger))
754 (< (- (get-universal-time) (warning-message-utime logger)) 300))
755 (log-daemon-message logger "Disconnected. Attempting reconnection at ~A."
756 (format-date-time (get-universal-time)))))
758 (defun log-reconnection (logger)
761 "Connection restablished at ~A." (format-date-time (get-universal-time))))
763 (defun is-connected (logger)
764 (when (ignore-errors (ping (connection logger) (server logger)))
766 (when (and (last-pong logger)
767 (< (- (get-universal-time) (last-pong logger)) 21))
768 (return-from is-connected t))
772 (let (*recon-nick* *recon-server* *recon-username* *recon-realname*
773 *recon-user-output* *recon-private-log* *recon-unknown-log*
774 *recon-formats* *recon-async* *recon-logging-stream* *recon-channel-names*)
775 (declare (special *recon-nick* *recon-server* *recon-username* *recon-realname*
776 *recon-formats* *recon-password* *recon-async*
777 *recon-user-output* *recon-private-log* *recon-unknown-log*
778 *recon-logging-stream* *recon-channel-names*))
780 (defun attempt-reconnection (logger)
781 (when (is-connected logger)
782 (return-from attempt-reconnection nil))
784 (log-disconnection logger)
785 (when (connection logger)
786 (ignore-errors (quit (connection logger) "Client terminated by server"))
787 (setf *recon-nick* (nickname logger)
788 *recon-server* (server logger)
789 *recon-username* (username logger)
790 *recon-realname* (realname logger)
791 *recon-password* (password logger)
792 *recon-async* (async logger)
793 *recon-user-output* (user-output logger)
794 *recon-private-log* (private-log logger)
795 *recon-unknown-log* (unknown-log logger)
796 *recon-formats* (formats logger)
797 *recon-logging-stream* (logging-stream logger)
798 *recon-channel-names* (channel-names logger))
799 (ignore-errors (remove-logger logger)))
803 (add-logger *recon-nick* *recon-server*
804 :channels *recon-channel-names*
805 :output *recon-user-output*
806 :password *recon-password*
807 :realname *recon-realname*
808 :username *recon-username*
809 :logging-stream *recon-logging-stream*
810 :private-log *recon-private-log*
811 :unknown-log *recon-unknown-log*
813 :formats *recon-formats*))))
816 (when (is-connected new-logger)
817 (log-reconnection new-logger)))))
821 (defun daemon-monitor ()
822 "This function runs in the background and monitors the connection of the logger."
827 (dolist (logger *loggers*)
828 (do ((warning-time (warning-message-utime logger) (warning-message-utime logger)))
829 ((or (is-connected logger) (null warning-time)))
831 ((and warning-time (> (- (get-universal-time) warning-time) 180))
832 ;;give up frequent checking because no disconnection despite waiting
833 (setf (warning-message-utime logger) nil))
834 ((not (is-connected logger))
836 (setf (warning-message-utime logger) (get-universal-time)))
837 (attempt-reconnection logger)
838 ;;after a succesful reconnection, the value of logger will be invalid
840 (return-from main-loop))
842 (daemon-sleep 30)))))
844 ((or (>= i 20) (some (lambda (logger) (warning-message-utime logger)) *loggers*)))
845 (daemon-sleep 15)))))