| 1 | ;;;; $Id: event.lisp 204 2007-04-30 07:56:05Z ehuelsmann $ |
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| 2 | ;;;; $URL: tags/0.9.0/event.lisp $ |
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| 3 | |
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| 4 | ;;;; See LICENSE for licensing information. |
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| 5 | |
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| 6 | (in-package :irc) |
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| 7 | |
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| 8 | (defgeneric irc-message-event (connection message) |
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| 9 | (:documentation "Upon receipt of an IRC message from the |
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| 10 | connection's stream, irc-message-event will be called with the |
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| 11 | message.")) |
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| 12 | |
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| 13 | (defmethod irc-message-event (connection (message irc-message)) |
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| 14 | (declare (ignore connection)) |
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| 15 | (unless (apply-to-hooks message) |
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| 16 | (client-log (connection message) message "UNHANDLED-EVENT:"))) |
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| 17 | |
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| 18 | (defgeneric dcc-message-event (connection message) |
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| 19 | (:documentation "Upon receipt of an IRC message from the |
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| 20 | connection's stream, irc-message-event will be called with the |
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| 21 | message.")) |
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| 22 | |
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| 23 | (defmethod dcc-message-event (connection (message dcc-message)) |
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| 24 | (declare (ignore connection)) |
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| 25 | (unless (apply-to-hooks message) |
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| 26 | (client-log (connection message) message "UNHANDLED-EVENT:"))) |
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| 27 | |
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| 28 | |
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| 29 | (defgeneric default-hook (message) |
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| 30 | (:documentation "Minimum action to be executed upon reception |
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| 31 | of the IRC message to keep the connection, channel and user |
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| 32 | objects in sync.")) |
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| 33 | |
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| 34 | (defmacro generate-maskmode-hooks (listmsg-class endmsg-class |
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| 35 | tmp-symbol mode-symbol) |
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| 36 | `(progn |
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| 37 | (defmethod default-hook ((message ,listmsg-class)) |
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| 38 | (destructuring-bind |
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| 39 | (target channel-name mask &optional set-by time-set) |
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| 40 | (arguments message) |
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| 41 | (declare (ignore target set-by time-set)) |
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| 42 | ;; note: the structure currently does not allow for logging |
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| 43 | ;; set-by and time-set: the MODE message handling currently |
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| 44 | ;; does not allow that. |
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| 45 | (let ((channel (find-channel (connection message) channel-name))) |
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| 46 | (when channel |
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| 47 | (unless (has-mode-p channel ',tmp-symbol) |
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| 48 | ;; start with a new list, replacing the old value later |
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| 49 | (add-mode channel ',tmp-symbol |
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| 50 | (make-instance 'list-value-mode |
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| 51 | :value-type :non-user))) |
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| 52 | ;; use package-local symbol to prevent conflicts |
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| 53 | (set-mode channel ',tmp-symbol mask))))) |
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| 54 | |
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| 55 | (defmethod default-hook ((message ,endmsg-class)) |
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| 56 | (let ((channel (find-channel (connection message) |
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| 57 | (car (arguments message))))) |
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| 58 | (when channel |
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| 59 | (let ((mode (has-mode-p channel ',tmp-symbol))) |
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| 60 | (when mode |
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| 61 | ;; replace list |
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| 62 | (add-mode channel ',mode-symbol mode) |
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| 63 | (remove-mode channel ',tmp-symbol)))))))) |
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| 64 | |
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| 65 | (generate-maskmode-hooks irc-rpl_banlist-message |
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| 66 | irc-rpl_endofbanlist-message |
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| 67 | banlist-in-progress :ban) |
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| 68 | (generate-maskmode-hooks irc-rpl_exceptlist-message |
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| 69 | irc-rpl_endofexceptlist-message |
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| 70 | exceptlist-in-progress :except) |
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| 71 | (generate-maskmode-hooks irc-rpl_invitelist-message |
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| 72 | irc-rpl_endofinvitelist-message |
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| 73 | invitelist-in-progress :invite) |
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| 74 | |
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| 75 | (defmethod default-hook ((message irc-rpl_isupport-message)) |
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| 76 | (destructuring-bind |
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| 77 | (target &rest capabilities) |
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| 78 | ;; the last argument contains only an explanitory text |
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| 79 | (butlast (arguments message)) |
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| 80 | (declare (ignore target)) |
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| 81 | (let* ((connection (connection message)) |
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| 82 | (current-case-mapping (case-map-name connection))) |
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| 83 | (flet ((split-arg (x) |
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| 84 | (let ((eq-pos (position #\= x))) |
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| 85 | (if eq-pos |
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| 86 | (list (substring x 0 eq-pos) |
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| 87 | (substring x (1+ eq-pos))) |
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| 88 | (list x)))) |
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| 89 | (decode-arg (text) |
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| 90 | ;; decode \xHH into (char-code HH) |
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| 91 | ;; btw: how should that work with multibyte utf8? |
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| 92 | (format nil "~{~A~}" |
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| 93 | (do* ((start 0 (+ 4 pos)) |
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| 94 | (pos (search "\\x" text) |
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| 95 | (search "\\x" text :start2 (1+ pos))) |
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| 96 | (points)) |
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| 97 | ((null pos) |
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| 98 | (reverse (push (substring text start) points))) |
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| 99 | (push (substring text start pos) points) |
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| 100 | (push (code-char (parse-integer text |
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| 101 | :start (+ 2 pos) |
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| 102 | :end (+ 4 pos) |
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| 103 | :junk-allowed nil |
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| 104 | :radix 16)) |
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| 105 | points)))) |
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| 106 | (negate-param (param) |
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| 107 | (if (eq #\- (char (first param) 0)) |
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| 108 | (assoc (substring (first param) 1) |
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| 109 | *default-isupport-values* |
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| 110 | :test #'string=) |
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| 111 | param))) |
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| 112 | |
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| 113 | (setf (server-capabilities connection) |
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| 114 | (reduce #'(lambda (x y) |
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| 115 | (adjoin y x :key #'first :test #'string=)) |
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| 116 | (append |
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| 117 | (remove nil (mapcar #'negate-param |
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| 118 | (mapcar #'(lambda (x) |
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| 119 | (mapcar #'decode-arg x)) |
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| 120 | (mapcar #'split-arg |
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| 121 | capabilities)))) |
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| 122 | (server-capabilities connection)) |
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| 123 | :initial-value '())) |
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| 124 | (setf (channel-mode-descriptions connection) |
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| 125 | (chanmode-descs-from-isupport (server-capabilities connection)) |
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| 126 | (nick-prefixes connection) |
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| 127 | (nick-prefixes-from-isupport (server-capabilities connection))) |
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| 128 | (when (not (equal current-case-mapping |
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| 129 | (case-map-name connection))) |
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| 130 | ;; we need to re-normalize nicks and channel names |
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| 131 | (re-apply-case-mapping connection)))))) |
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| 132 | |
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| 133 | (defmethod default-hook ((message irc-rpl_whoisuser-message)) |
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| 134 | (destructuring-bind |
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| 135 | (target nick username hostname star realname) |
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| 136 | (arguments message) |
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| 137 | (declare (ignore target star)) |
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| 138 | (let ((user (find-user (connection message) nick))) |
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| 139 | (when user |
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| 140 | (setf (realname user) realname |
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| 141 | (username user) username |
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| 142 | (hostname user) hostname))))) |
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| 143 | |
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| 144 | (defmethod default-hook ((message irc-rpl_list-message)) |
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| 145 | (destructuring-bind |
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| 146 | (channel count topic) |
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| 147 | (arguments message) |
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| 148 | (let ((connection (connection message)) |
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| 149 | (user-count (parse-integer count))) |
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| 150 | (add-channel connection (or (find-channel connection channel) |
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| 151 | (make-channel connection |
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| 152 | :name channel |
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| 153 | :topic topic |
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| 154 | :user-count user-count)))))) |
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| 155 | |
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| 156 | (defmethod default-hook ((message irc-rpl_topic-message)) |
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| 157 | (destructuring-bind |
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| 158 | (target channel &optional topic) |
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| 159 | (arguments message) |
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| 160 | (declare (ignore target)) |
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| 161 | (setf (topic (find-channel (connection message) channel)) topic))) |
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| 162 | |
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| 163 | (defmethod default-hook ((message irc-rpl_namreply-message)) |
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| 164 | (let* ((connection (connection message))) |
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| 165 | (destructuring-bind |
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| 166 | (nick chan-visibility channel names) |
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| 167 | (arguments message) |
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| 168 | (declare (ignore nick)) |
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| 169 | (let ((channel (find-channel connection channel))) |
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| 170 | (setf (visibility channel) |
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| 171 | (or (second (assoc chan-visibility |
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| 172 | '(("=" :public) ("*" :private) ("@" :secret)) |
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| 173 | :test #'string=)) |
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| 174 | :unknown)) |
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| 175 | (unless (has-mode-p channel 'namreply-in-progress) |
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| 176 | (add-mode channel 'namreply-in-progress |
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| 177 | (make-instance 'list-value-mode :value-type :user))) |
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| 178 | (dolist (nickname (tokenize-string names)) |
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| 179 | (let ((user (find-or-make-user connection |
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| 180 | (canonicalize-nickname connection |
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| 181 | nickname)))) |
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| 182 | (unless (equal user (user connection)) |
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| 183 | (add-user connection user) |
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| 184 | (add-user channel user) |
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| 185 | (set-mode channel 'namreply-in-progress user)) |
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| 186 | (let* ((mode-char (getf (nick-prefixes connection) |
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| 187 | (elt nickname 0))) |
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| 188 | (mode-name (when mode-char |
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| 189 | (mode-name-from-char connection |
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| 190 | channel mode-char)))) |
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| 191 | (when mode-name |
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| 192 | (if (has-mode-p channel mode-name) |
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| 193 | (set-mode channel mode-name user) |
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| 194 | (set-mode-value (add-mode channel mode-name |
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| 195 | (make-mode connection |
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| 196 | channel mode-name)) |
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| 197 | user)))))))))) |
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| 198 | |
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| 199 | (defmethod default-hook ((message irc-rpl_endofnames-message)) |
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| 200 | (let* ((channel (find-channel (connection message) |
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| 201 | (second (arguments message)))) |
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| 202 | (mode (get-mode channel 'namreply-in-progress)) |
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| 203 | (channel-users)) |
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| 204 | (remove-mode channel 'namreply-in-progress) |
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| 205 | (maphash #'(lambda (nick user-obj) |
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| 206 | (declare (ignore nick)) |
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| 207 | (pushnew user-obj channel-users)) (users channel)) |
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| 208 | (dolist (user (remove-if #'(lambda (x) |
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| 209 | (member x mode)) channel-users)) |
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| 210 | (remove-user channel user)))) |
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| 211 | |
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| 212 | (defmethod default-hook ((message irc-ping-message)) |
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| 213 | (apply #'pong (connection message) (arguments message))) |
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| 214 | |
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| 215 | (defmethod default-hook ((message irc-join-message)) |
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| 216 | (with-slots |
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| 217 | (connection source host user arguments) |
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| 218 | message |
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| 219 | (destructuring-bind |
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| 220 | (channel) |
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| 221 | arguments |
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| 222 | (let ((user (find-or-make-user connection source |
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| 223 | :hostname host |
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| 224 | :username user)) |
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| 225 | (channel (or (find-channel connection channel) |
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| 226 | (make-channel connection :name channel)))) |
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| 227 | (when (self-message-p message) |
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| 228 | (add-channel connection channel)) |
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| 229 | (add-user connection user) |
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| 230 | (add-user channel user))))) |
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| 231 | |
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| 232 | (defmethod default-hook ((message irc-topic-message)) |
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| 233 | (with-slots |
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| 234 | (connection arguments) |
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| 235 | message |
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| 236 | (destructuring-bind |
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| 237 | (channel &optional topic) |
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| 238 | arguments |
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| 239 | (setf (topic (find-channel connection channel)) topic)))) |
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| 240 | |
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| 241 | (defmethod default-hook ((message irc-part-message)) |
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| 242 | (with-slots |
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| 243 | (connection arguments source) |
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| 244 | message |
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| 245 | (destructuring-bind |
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| 246 | (channel &optional text) |
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| 247 | arguments |
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| 248 | (declare (ignore text)) |
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| 249 | (let ((channel (find-channel connection channel)) |
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| 250 | (user (find-user connection source))) |
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| 251 | (when (and user channel) |
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| 252 | (if (self-message-p message) |
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| 253 | (remove-channel user channel) |
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| 254 | (remove-user channel user))))))) |
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| 255 | |
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| 256 | (defmethod default-hook ((message irc-quit-message)) |
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| 257 | (let* ((connection (connection message)) |
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| 258 | (user (find-user connection (source message)))) |
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| 259 | (unless (null user) |
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| 260 | (remove-user-everywhere connection user)))) |
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| 261 | |
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| 262 | (defmethod default-hook ((message irc-rpl_channelmodeis-message)) |
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| 263 | (with-slots |
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| 264 | (connection arguments) |
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| 265 | message |
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| 266 | (destructuring-bind |
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| 267 | (target channel &rest mode-arguments) |
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| 268 | arguments |
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| 269 | (let* ((channel (find-channel connection channel)) |
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| 270 | (mode-changes |
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| 271 | (when channel |
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| 272 | (parse-mode-arguments connection channel mode-arguments |
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| 273 | :server-p (user connection))))) |
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| 274 | (dolist (change mode-changes) |
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| 275 | (destructuring-bind |
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| 276 | (op mode-name value) |
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| 277 | change |
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| 278 | (unless (has-mode-p channel mode-name) |
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| 279 | (add-mode target mode-name |
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| 280 | (make-mode connection channel mode-name))) |
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| 281 | (funcall (if (char= #\+ op) #'set-mode #'unset-mode) |
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| 282 | channel mode-name value))))))) |
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| 283 | |
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| 284 | (defmethod default-hook ((message irc-mode-message)) |
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| 285 | (destructuring-bind |
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| 286 | (target &rest arguments) |
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| 287 | (arguments message) |
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| 288 | (let* ((connection (connection message)) |
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| 289 | (target (or (find-channel connection target) |
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| 290 | (find-user connection target))) |
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| 291 | (mode-changes |
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| 292 | (when target |
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| 293 | (parse-mode-arguments connection target arguments |
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| 294 | :server-p (user connection))))) |
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| 295 | (dolist (change mode-changes) |
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| 296 | (destructuring-bind |
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| 297 | (op mode-name value) |
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| 298 | change |
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| 299 | (unless (has-mode-p target mode-name) |
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| 300 | (add-mode target mode-name |
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| 301 | (make-mode connection target mode-name))) |
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| 302 | (funcall (if (char= #\+ op) #'set-mode #'unset-mode) |
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| 303 | target mode-name value)))))) |
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| 304 | |
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| 305 | (defmethod default-hook ((message irc-nick-message)) |
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| 306 | (with-slots |
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| 307 | (connection source host user arguments) |
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| 308 | message |
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| 309 | (destructuring-bind |
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| 310 | (new-nick) |
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| 311 | arguments |
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| 312 | (let* ((user (find-or-make-user connection source |
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| 313 | :hostname host |
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| 314 | :username user))) |
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| 315 | (change-nickname connection user new-nick))))) |
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| 316 | |
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| 317 | (defmethod default-hook ((message irc-kick-message)) |
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| 318 | (with-slots |
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| 319 | (connection arguments) |
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| 320 | message |
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| 321 | (destructuring-bind |
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| 322 | (channel nick &optional reason) |
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| 323 | arguments |
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| 324 | (declare (ignore reason)) |
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| 325 | (let* ((channel (find-channel connection channel)) |
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| 326 | (user (find-user connection nick))) |
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| 327 | (when (and user channel) |
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| 328 | (if (user-eq-me-p connection user) |
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| 329 | (remove-channel user channel) |
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| 330 | (remove-user channel user))))))) |
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| 331 | |
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| 332 | ;;###TODO: generate these responses in a DCC CHAT context too. |
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| 333 | (macrolet ((define-ctcp-reply-hook ((message-var message-type) &body body) |
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| 334 | `(defmethod default-hook ((,message-var ,message-type)) |
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| 335 | (when (ctcp-request-p ,message-var) |
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| 336 | ,@body)))) |
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| 337 | (define-ctcp-reply-hook (message ctcp-time-message) |
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| 338 | (multiple-value-bind |
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| 339 | (second minute hour date month year day) |
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| 340 | (get-decoded-time) |
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| 341 | (send-irc-message |
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| 342 | (connection message) |
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| 343 | :notice (source message) |
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| 344 | (make-ctcp-message |
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| 345 | (format nil "TIME ~A" |
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| 346 | (make-time-message second minute hour date month year day)))))) |
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| 347 | (define-ctcp-reply-hook (message ctcp-source-message) |
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| 348 | (send-irc-message |
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| 349 | (connection message) |
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| 350 | :notice |
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| 351 | (source message) |
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| 352 | (make-ctcp-message |
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| 353 | (format nil "SOURCE ~A:~A:~A" |
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| 354 | *download-host* |
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| 355 | *download-directory* |
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| 356 | *download-file*)))) |
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| 357 | (define-ctcp-reply-hook (message ctcp-finger-message) |
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| 358 | (let* ((user (user (connection message))) |
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| 359 | (finger-info (if (not (zerop (length (realname user)))) |
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| 360 | (realname user) |
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| 361 | (nickname user)))) |
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| 362 | (send-irc-message |
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| 363 | (connection message) |
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| 364 | :notice (source message) |
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| 365 | (make-ctcp-message |
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| 366 | (format nil "FINGER ~A" finger-info))))) |
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| 367 | (define-ctcp-reply-hook (message ctcp-version-message) |
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| 368 | (send-irc-message |
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| 369 | (connection message) |
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| 370 | :notice (source message) |
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| 371 | (make-ctcp-message |
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| 372 | (format nil "VERSION ~A" *ctcp-version*)))) |
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| 373 | (define-ctcp-reply-hook (message ctcp-ping-message) |
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| 374 | (send-irc-message |
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| 375 | (connection message) |
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| 376 | :notice (source message) |
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| 377 | (make-ctcp-message |
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| 378 | (format nil "PING ~A" (car (last (arguments message)))))))) |
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| 379 | |
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| 380 | (defmethod irc-message-event (connection (message ctcp-dcc-chat-request-message)) |
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| 381 | (declare (ignore connection)) |
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| 382 | (apply-to-hooks message) |
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| 383 | (client-log (connection message) message)) |
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| 384 | ; (when (automatically-accept-dcc-connections (configuration (connection message))) |
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| 385 | ; (let* ((user (find-user (connection message) (source message))) |
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| 386 | ; (args (tokenize-string (trailing-argument message))) |
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| 387 | ; (remote-address (hbo-to-dotted-quad (parse-integer (fourth args)))) |
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| 388 | ; (remote-port (parse-integer (fifth args) :junk-allowed t))) |
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| 389 | ; (push (make-dcc-connection :user user |
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| 390 | ; :remote-address remote-address |
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| 391 | ; :remote-port remote-port) |
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| 392 | ; *dcc-connections*)))) |
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| 393 | |
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| 394 | (defmethod irc-message-event (connection (message ctcp-dcc-send-request-message)) |
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| 395 | (declare (ignore connection)) |
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| 396 | (apply-to-hooks message) |
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| 397 | (client-log (connection message) message)) |
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| 398 | ; (when (automatically-accept-dcc-downloads (configuration (connection message))) |
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| 399 | ; (let* ((user (find-user (connection message) (source message))) |
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| 400 | ; (args (tokenize-string (trailing-argument message))) |
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| 401 | ; (filename (third args)) |
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| 402 | ; (remote-address (hbo-to-dotted-quad (parse-integer (fourth args)))) |
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| 403 | ; (remote-port (parse-integer (fifth args))) |
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| 404 | ; (filesize (parse-integer (sixth args) :junk-allowed t))) |
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| 405 | ; (let ((dcc-connection (make-dcc-connection :user user |
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| 406 | ; :remote-address remote-address |
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| 407 | ; :remote-port remote-port))) |
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| 408 | ; (with-open-file (stream filename :direction :output |
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| 409 | ; :if-exists :supersede) |
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| 410 | ; (write-sequence (read-message-loop dcc-connection) stream)))))) |
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| 411 | |
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