1 ;; -*- Mode: Lisp; Syntax: ANSI-Common-Lisp -*-
3 ;; Copyright (C) 2006, 2007 Stelian Ionescu
5 ;; This code is free software; you can redistribute it and/or
6 ;; modify it under the terms of the version 2.1 of
7 ;; the GNU Lesser General Public License as published by
8 ;; the Free Software Foundation, as clarified by the
9 ;; preamble found here:
10 ;; http://opensource.franz.com/preamble.html
12 ;; This program is distributed in the hope that it will be useful,
13 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
14 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 ;; GNU General Public License for more details.
17 ;; You should have received a copy of the GNU Lesser General
18 ;; Public License along with this library; if not, write to the
19 ;; Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
20 ;; Boston, MA 02110-1301, USA
22 (in-package :net.sockets
)
24 (defvar *socket-type-map
*
25 '(((:ipv4
:stream
:active
:default
) . socket-stream-internet-active
)
26 ((:ipv6
:stream
:active
:default
) . socket-stream-internet-active
)
27 ((:ipv4
:stream
:passive
:default
) . socket-stream-internet-passive
)
28 ((:ipv6
:stream
:passive
:default
) . socket-stream-internet-passive
)
29 ((:local
:stream
:active
:default
) . socket-stream-local-active
)
30 ((:local
:stream
:passive
:default
) . socket-stream-local-passive
)
31 ((:local
:datagram
:active
:default
) . socket-datagram-local-active
)
32 ((:ipv4
:datagram
:active
:default
) . socket-datagram-internet-active
)
33 ((:ipv6
:datagram
:active
:default
) . socket-datagram-internet-active
)))
35 (defun select-socket-type (family type connect protocol
)
36 (or (cdr (assoc (list family type connect protocol
) *socket-type-map
*
38 (error "No socket class found !!")))
41 ;;;;;;;;;;;;;;;;;;;;;;;;;
42 ;; SHARED-INITIALIZE ;;
43 ;;;;;;;;;;;;;;;;;;;;;;;;;
45 (defun translate-make-socket-keywords-to-constants (family type protocol
)
46 (let ((sf (ecase family
49 (:local et
:af-local
)))
51 (:stream et
:sock-stream
)
52 (:datagram et
:sock-dgram
)))
54 ((integerp protocol
) protocol
)
55 ((eql protocol
:default
) 0)
58 (get-protocol-by-name (string-downcase
59 (string protocol
))))))))
62 (defmethod socket-fd ((socket socket
))
64 (defmethod (setf socket-fd
) (fd (socket socket
))
65 (setf (fd-of socket
) fd
))
67 (defmethod shared-initialize :after
((socket socket
) slot-names
68 &key file-descriptor family
69 type
(protocol :default
))
70 (declare (ignore slot-names
))
71 (when (socket-open-p socket
)
73 (with-accessors ((fd fd-of
)
75 (proto socket-protocol
)) socket
76 (setf fd
(or file-descriptor
77 (multiple-value-bind (sf st sp
)
78 (translate-make-socket-keywords-to-constants family type protocol
)
79 (with-socket-error-filter
80 (et:socket sf st sp
)))))
84 (defmethod socket-type ((socket stream-socket
))
87 (defmethod socket-type ((socket datagram-socket
))
95 (defmethod print-object ((socket socket-stream-internet-active
) stream
)
96 (print-unreadable-object (socket stream
:type nil
:identity t
)
97 (format stream
"active internet stream socket" )
98 (if (socket-connected-p socket
)
99 (multiple-value-bind (addr port
) (remote-name socket
)
100 (format stream
" connected to ~A/~A"
101 (sockaddr->presentation addr
) port
))
103 (format stream
", unconnected")
104 (format stream
", closed")))))
106 (defmethod print-object ((socket socket-stream-internet-passive
) stream
)
107 (print-unreadable-object (socket stream
:type nil
:identity t
)
108 (format stream
"passive internet stream socket" )
109 (if (socket-bound-p socket
)
110 (multiple-value-bind (addr port
) (local-name socket
)
111 (format stream
" ~A ~A/~A"
112 (if (socket-listening-p socket
)
113 "waiting for connections @"
115 (sockaddr->presentation addr
) port
))
117 (format stream
", unbound")
118 (format stream
", closed")))))
120 (defmethod print-object ((socket socket-stream-local-active
) stream
)
121 (print-unreadable-object (socket stream
:type nil
:identity t
)
122 (format stream
"active local stream socket" )
123 (if (socket-connected-p socket
)
124 (format stream
" connected")
126 (format stream
", unconnected")
127 (format stream
", closed")))))
129 (defmethod print-object ((socket socket-stream-local-passive
) stream
)
130 (print-unreadable-object (socket stream
:type nil
:identity t
)
131 (format stream
"passive local stream socket" )
132 (if (socket-bound-p socket
)
133 (format stream
" ~A ~A"
134 (if (socket-listening-p socket
)
135 "waiting for connections @"
137 (sockaddr->presentation
(socket-address socket
)))
139 (format stream
", unbound")
140 (format stream
", closed")))))
142 (defmethod print-object ((socket socket-datagram-local-active
) stream
)
143 (print-unreadable-object (socket stream
:type nil
:identity t
)
144 (format stream
"local datagram socket" )
145 (if (socket-connected-p socket
)
146 (format stream
" connected")
148 (format stream
", unconnected")
149 (format stream
", closed")))))
151 (defmethod print-object ((socket socket-datagram-internet-active
) stream
)
152 (print-unreadable-object (socket stream
:type nil
:identity t
)
153 (format stream
"internet datagram socket" )
154 (if (socket-connected-p socket
)
155 (multiple-value-bind (addr port
) (remote-name socket
)
156 (format stream
" connected to ~A/~A"
157 (sockaddr->presentation addr
) port
))
159 (format stream
", unconnected")
160 (format stream
", closed")))))
167 (defmethod close :around
((socket socket
) &key abort
)
168 (declare (ignore abort
))
170 (with-socket-error-filter
171 (et:close
(fd-of socket
))))
172 (setf (fd-of socket
) nil
)
176 (defmethod close :around
((socket passive-socket
) &key abort
)
177 (declare (ignore abort
))
179 (setf (slot-value socket
'bound
) nil
)
180 (setf (slot-value socket
'listening
) nil
)
183 (defmethod close ((socket socket
) &key abort
)
184 (declare (ignore socket abort
)))
186 (defmethod socket-open-p ((socket socket
))
187 (unless (fd-of socket
)
188 (return-from socket-open-p nil
))
189 (with-socket-error-filter
191 (with-foreign-object (ss 'et
:sockaddr-storage
)
192 (et:bzero ss et
:size-of-sockaddr-storage
)
193 (with-foreign-pointer (size et
:size-of-socklen
)
194 (setf (mem-ref size
:socklen
)
195 et
:size-of-sockaddr-storage
)
196 (et:getsockname
(fd-of socket
) ss size
)
199 #+freebsd
(et:econnreset
()))))
206 (defmethod local-name ((socket internet-socket
))
207 (with-foreign-object (ss 'et
:sockaddr-storage
)
208 (et:bzero ss et
:size-of-sockaddr-storage
)
209 (with-foreign-pointer (size et
:size-of-socklen
)
210 (setf (mem-ref size
:socklen
)
211 et
:size-of-sockaddr-storage
)
212 (with-socket-error-filter
213 (et:getsockname
(fd-of socket
) ss size
))
214 (return-from local-name
215 (sockaddr-storage->sockaddr ss
)))))
217 (defmethod local-name ((socket local-socket
))
218 (with-foreign-object (sun 'et
:sockaddr-un
)
219 (et:bzero sun et
:size-of-sockaddr-un
)
220 (with-foreign-pointer (size et
:size-of-socklen
)
221 (setf (mem-ref size
:socklen
)
222 et
:size-of-sockaddr-storage
)
223 (with-socket-error-filter
224 (et:getsockname
(fd-of socket
) sun size
))
225 (return-from local-name
226 (sockaddr-un->sockaddr sun
)))))
228 (defmethod socket-address ((socket socket
))
229 (nth-value 0 (local-name socket
)))
231 (defmethod socket-port ((socket internet-socket
))
232 (nth-value 1 (local-name socket
)))
239 (defmethod remote-name ((socket internet-socket
))
240 (with-foreign-object (ss 'et
:sockaddr-storage
)
241 (et:bzero ss et
:size-of-sockaddr-storage
)
242 (with-foreign-pointer (size et
:size-of-socklen
)
243 (setf (mem-ref size
:socklen
)
244 et
:size-of-sockaddr-storage
)
245 (with-socket-error-filter
246 (et:getpeername
(fd-of socket
) ss size
))
247 (return-from remote-name
248 (sockaddr-storage->sockaddr ss
)))))
250 (defmethod remote-name ((socket local-socket
))
251 (with-foreign-object (sun 'et
:sockaddr-un
)
252 (et:bzero sun et
:size-of-sockaddr-un
)
253 (with-foreign-pointer (size et
:size-of-socklen
)
254 (setf (mem-ref size
:socklen
)
255 et
:size-of-sockaddr-storage
)
256 (with-socket-error-filter
257 (et:getpeername
(fd-of socket
) sun size
))
258 (return-from remote-name
259 (sockaddr-un->sockaddr sun
)))))
266 (defmethod bind-address :before
((socket internet-socket
)
267 address
&key
(reuse-address t
))
268 (declare (ignore address
))
270 (set-socket-option socket
:reuse-address
:value t
)))
272 (defun bind-ipv4-address (fd address port
)
273 (with-foreign-object (sin 'et
:sockaddr-in
)
274 (make-sockaddr-in sin address port
)
275 (with-socket-error-filter
276 (et:bind fd sin et
:size-of-sockaddr-in
))))
278 (defun bind-ipv6-address (fd address port
)
279 (with-foreign-object (sin6 'et
:sockaddr-in6
)
280 (make-sockaddr-in6 sin6 address port
)
281 (with-socket-error-filter
282 (et:bind fd sin6 et
:size-of-sockaddr-in6
))))
284 (defmethod bind-address ((socket internet-socket
)
287 (if (eql (socket-family socket
) :ipv6
)
288 (bind-ipv6-address (fd-of socket
)
289 (map-ipv4-vector-to-ipv6 (name address
))
291 (bind-ipv4-address (fd-of socket
) (name address
) port
))
294 (defmethod bind-address ((socket internet-socket
)
297 (bind-ipv6-address (fd-of socket
) (name address
) port
)
300 (defmethod bind-address :before
((socket local-socket
)
301 (address localaddr
) &key
)
302 (when (typep socket
'active-socket
)
303 (error "You can't bind an active Unix socket.")))
305 (defmethod bind-address ((socket local-socket
)
306 (address localaddr
) &key
)
307 (with-foreign-object (sun 'et
:sockaddr-un
)
308 (make-sockaddr-un sun
(name address
))
309 (with-socket-error-filter
310 (et:bind
(fd-of socket
) sun et
:size-of-sockaddr-un
)))
313 (defmethod bind-address :after
((socket socket
)
314 (address sockaddr
) &key
)
315 (setf (slot-value socket
'bound
) t
))
322 (defmethod socket-listen ((socket passive-socket
)
323 &key
(backlog (min *default-backlog-size
*
324 +max-backlog-size
+)))
325 (unless backlog
(setf backlog
(min *default-backlog-size
*
326 +max-backlog-size
+)))
327 (check-type backlog unsigned-byte
"a non-negative integer")
328 (with-socket-error-filter
329 (et:listen
(fd-of socket
) backlog
))
330 (setf (slot-value socket
'listening
) t
)
333 (defmethod socket-listen ((socket active-socket
)
335 (declare (ignore backlog
))
336 (error "You can't listen on active sockets."))
343 (defmethod accept-connection ((socket active-socket
)
345 (declare (ignore wait
))
346 (error "You can't accept connections on active sockets."))
348 (defmethod accept-connection ((socket passive-socket
)
350 (with-foreign-object (ss 'et
:sockaddr-storage
)
351 (et:bzero ss et
:size-of-sockaddr-storage
)
352 (with-foreign-pointer (size et
:size-of-socklen
)
353 (setf (mem-ref size
:socklen
)
354 et
:size-of-sockaddr-storage
)
355 (let (non-blocking-state
357 (with-socket-error-filter
360 ;; do a "normal" accept
361 ;; Note: the socket may already be in non-blocking mode
362 (setf client-fd
(et:accept
(fd-of socket
) ss size
))
363 ;; set the socket to non-blocking mode before calling accept()
364 ;; if there's no new connection return NIL
367 ;; saving the current non-blocking state
368 (setf non-blocking-state
(fd-non-blocking socket
))
369 ;; switch the socket to non-blocking mode
370 (setf (fd-non-blocking socket
) t
)
371 (setf client-fd
(et:accept
(fd-of socket
) ss size
)))
372 ;; restoring the socket's non-blocking state
373 (setf (fd-non-blocking socket
) non-blocking-state
)))
374 ;; the socket is marked non-blocking and there's no new connection
376 (return-from accept-connection nil
))))
379 ;; create the client socket object
380 (make-instance (active-class socket
)
381 :file-descriptor client-fd
)))
382 (return-from accept-connection client-socket
))))))
390 (defmethod connect :before
((socket active-socket
)
392 (declare (ignore sockaddr
))
394 (set-socket-option socket
:no-sigpipe
:value t
)))
396 (defun ipv4-connect (fd address port
)
397 (with-foreign-object (sin 'et
:sockaddr-in
)
398 (make-sockaddr-in sin address port
)
399 (with-socket-error-filter
400 (et:connect fd sin et
:size-of-sockaddr-in
))))
402 (defun ipv6-connect (fd address port
)
403 (with-foreign-object (sin6 'et
:sockaddr-in6
)
404 (make-sockaddr-in6 sin6 address port
)
405 (with-socket-error-filter
406 (et:connect fd sin6 et
:size-of-sockaddr-in6
))))
408 (defmethod connect ((socket internet-socket
)
409 (address ipv4addr
) &key
(port 0))
410 (if (eql (socket-family socket
) :ipv6
)
411 (ipv6-connect (fd-of socket
)
412 (map-ipv4-vector-to-ipv6 (name address
))
414 (ipv4-connect (fd-of socket
) (name address
) port
))
417 (defmethod connect ((socket internet-socket
)
418 (address ipv6addr
) &key
(port 0))
419 (ipv6-connect (fd-of socket
) (name address
) port
)
422 (defmethod connect ((socket local-socket
)
423 (address localaddr
) &key
)
424 (with-foreign-object (sun 'et
:sockaddr-un
)
425 (make-sockaddr-un sun
(name address
))
426 (with-socket-error-filter
427 (et:connect
(fd-of socket
) sun et
:size-of-sockaddr-un
)))
430 (defmethod connect ((socket passive-socket
)
432 (declare (ignore address
))
433 (error "You cannot connect passive sockets."))
435 (defmethod socket-connected-p ((socket socket
))
436 (unless (fd-of socket
)
437 (return-from socket-connected-p nil
))
438 (with-socket-error-filter
440 (with-foreign-object (ss 'et
:sockaddr-storage
)
441 (et:bzero ss et
:size-of-sockaddr-storage
)
442 (with-foreign-pointer (size et
:size-of-socklen
)
443 (setf (mem-ref size
:socklen
)
444 et
:size-of-sockaddr-storage
)
445 (et:getpeername
(fd-of socket
) ss size
)
447 (et:enotconn
() nil
))))
454 (defmethod shutdown ((socket active-socket
) direction
)
455 (check-type direction
(member :read
:write
:read-write
)
456 "valid direction specifier")
457 (with-socket-error-filter
458 (et:shutdown
(fd-of socket
)
462 (:read-write et
:shut-rdwr
))))
465 (defmethod shutdown ((socket passive-socket
) direction
)
466 (declare (ignore direction
))
467 (error "You cannot shut down passive sockets."))
474 (defun %normalize-send-buffer
(buff start end ef
)
475 (setf (values start end
) (%check-bounds buff start end
))
477 (ub8-sarray (values buff start
(- end start
)))
478 (ub8-vector (values (coerce buff
'ub8-sarray
)
479 start
(- end start
)))
480 (string (values (%to-octets buff ef start end
)
483 (defmethod socket-send ((buffer array
)
484 (socket active-socket
) &key
(start 0) end
485 remote-address remote-port end-of-record
486 dont-route dont-wait
(no-signal *no-sigpipe
*)
487 out-of-band
#+linux more
#+linux confirm
)
488 (check-type start unsigned-byte
489 "a non-negative unsigned integer")
490 (check-type end
(or unsigned-byte null
)
491 "a non-negative unsigned integer or NIL")
492 (when (or remote-port remote-address
)
493 (check-type remote-address sockaddr
"a network address")
494 (check-type remote-port
(unsigned-byte 16) "a valid IP port number"))
495 (let ((flags (logior (if end-of-record et
:msg-eor
0)
496 (if dont-route et
:msg-dontroute
0)
497 (if dont-wait et
:msg-dontwait
0)
498 (if no-signal et
:msg-nosignal
0)
499 (if out-of-band et
:msg-oob
0)
500 #+linux
(if more et
:msg-more
0)
501 #+linux
(if confirm et
:msg-confirm
0))))
502 (when (and (ipv4-address-p remote-address
)
503 (eql (socket-family socket
) :ipv6
))
504 (setf remote-address
(map-ipv4-address->ipv6 remote-address
)))
505 (multiple-value-bind (buff start-offset bufflen
)
506 (%normalize-send-buffer buffer start end
(external-format-of socket
))
507 (with-foreign-object (ss 'et
:sockaddr-storage
)
508 (et:bzero ss et
:size-of-sockaddr-storage
)
510 (sockaddr->sockaddr-storage ss remote-address remote-port
))
511 (with-pointer-to-vector-data (buff-sap buff
)
512 (incf-pointer buff-sap start-offset
)
513 (with-socket-error-filter
514 (return-from socket-send
515 (et:sendto
(fd-of socket
)
518 (if remote-address ss
(null-pointer))
519 (if remote-address et
:size-of-sockaddr-storage
0)))))))))
521 (defmethod socket-send (buffer (socket passive-socket
) &key
)
522 (declare (ignore buffer
))
523 (error "You cannot send data on a passive socket."))
530 (defun %normalize-receive-buffer
(buff start end
)
531 (setf (values start end
) (%check-bounds buff start end
))
533 ((simple-array ub8
(*)) (values buff start
(- end start
)))))
535 (defmethod socket-receive ((buffer array
)
536 (socket active-socket
) &key
(start 0) end
537 out-of-band peek wait-all
538 dont-wait
(no-signal *no-sigpipe
*))
539 (let ((flags (logior (if out-of-band et
:msg-oob
0)
540 (if peek et
:msg-peek
0)
541 (if wait-all et
:msg-waitall
0)
542 (if dont-wait et
:msg-dontwait
0)
543 (if no-signal et
:msg-nosignal
0)))
545 (multiple-value-bind (buff start-offset bufflen
)
546 (%normalize-receive-buffer buffer start end
)
547 (with-foreign-object (ss 'et
:sockaddr-storage
)
548 (et:bzero ss et
:size-of-sockaddr-storage
)
549 (with-foreign-pointer (size et
:size-of-socklen
)
550 (setf (mem-ref size
:socklen
)
551 et
:size-of-sockaddr-storage
)
552 (with-pointer-to-vector-data (buff-sap buff
)
553 (incf-pointer buff-sap start-offset
)
554 (with-socket-error-filter
556 (et:recvfrom
(fd-of socket
)
561 (return-from socket-receive
562 ;; when socket is a datagram socket
563 ;; return the sender's address as 3rd value
564 (if (typep socket
'datagram-socket
)
565 (multiple-value-bind (remote-address remote-port
)
566 (sockaddr-storage->sockaddr ss
)
567 (values buffer bytes-received remote-address remote-port
))
568 (values buffer bytes-received
)))))))
570 (defmethod socket-receive (buffer (socket passive-socket
) &key
)
571 (declare (ignore buffer
))
572 (error "You cannot receive data from a passive socket."))
576 ;; Only for datagram sockets
579 (defmethod unconnect :before
((socket active-socket
))
580 (unless (typep socket
'datagram-socket
)
581 (error "You can only unconnect active datagram sockets.")))
583 (defmethod unconnect ((socket datagram-socket
))
584 (with-socket-error-filter
585 (with-foreign-object (sin 'et
:sockaddr-in
)
586 (et:bzero sin et
:size-of-sockaddr-in
)
587 (setf (foreign-slot-value sin
'et
:sockaddr-in
'et
:addr
) et
:af-unspec
)
588 (et:connect
(fd-of socket
) sin et
:size-of-sockaddr-in
))))