1 ;;;; -*- Mode: Lisp; Syntax: ANSI-Common-Lisp; Base: 10 -*-
2 ;;;; *************************************************************************
3 ;;;; FILE IDENTIFICATION
5 ;;;; Name: sockets.lisp
6 ;;;; Purpose: Socket functions
7 ;;;; Programmer: Kevin M. Rosenberg with excerpts from portableaserve
8 ;;;; Date Started: Jun 2003
9 ;;;; *************************************************************************
13 (eval-when (:compile-toplevel :load-toplevel :execute)
14 #+sbcl (require :sb-bsd-sockets)
15 #+lispworks (require "comm")
16 #+allegro (require :socket))
20 (defun listen-to-inet-port (&key (port 0) (kind :stream) (reuse nil))
21 "Create, bind and listen to an inet socket on *:PORT.
22 setsockopt SO_REUSEADDR if :reuse is not nil"
23 (declare (ignore kind))
24 (let ((socket (make-instance 'sb-bsd-sockets:inet-socket
28 (setf (sb-bsd-sockets:sockopt-reuse-address socket) t))
29 (sb-bsd-sockets:socket-bind
30 socket (sb-bsd-sockets:make-inet-address "0.0.0.0") port)
31 (sb-bsd-sockets:socket-listen socket 15)
34 (defun create-inet-listener (port &key (format :text) (reuse-address t))
35 #+cmu (declare (ignore format reuse-address))
36 #+cmu (ext:create-inet-listener port)
38 (socket:make-socket :connect :passive :local-port port :format format
42 (if (or (null port) (integerp port))
44 (error "illegal value for port: ~s" port)))
45 :reuse-address reuse-address)
46 #+sbcl (declare (ignore format))
47 #+sbcl (listen-to-inet-port :port port :reuse reuse-address)
48 #+clisp (declare (ignore format reuse-address))
49 #+clisp (ext:socket-server port)
51 (declare (ignore format))
53 (ccl:make-socket :connect :passive :local-port port
54 :reuse-address reuse-address)
55 #-(or allegro clisp cmu sbcl openmcl)
56 (warn "create-inet-listener not supported on this implementation")
59 (defun make-fd-stream (socket &key input output element-type)
61 (sys:make-fd-stream socket :input input :output output
62 :element-type element-type)
64 (sb-bsd-sockets:socket-make-stream socket :input input :output output
65 :element-type element-type)
66 #-(or cmu sbcl) (declare (ignore input output element-type))
67 #-(or cmu sbcl) socket
71 (defun accept-tcp-connection (listener)
72 "Returns (VALUES stream socket)"
74 (let ((sock (socket:accept-connection listener)))
77 (let ((sock (ext:socket-accept listener)))
81 (mp:process-wait-until-fd-usable listener :input)
82 (let ((sock (nth-value 0 (ext:accept-tcp-connection listener))))
83 (values (sys:make-fd-stream sock :input t :output t) sock)))
85 (when (sb-sys:wait-until-fd-usable
86 (sb-bsd-sockets:socket-file-descriptor listener) :input)
87 (let ((sock (sb-bsd-sockets:socket-accept listener)))
89 (sb-bsd-sockets:socket-make-stream
90 sock :element-type :default :input t :output t)
93 (let ((sock (ccl:accept-connection listener :wait t)))
95 #-(or allegro clisp cmu sbcl openmcl)
96 (warn "accept-tcp-connection not supported on this implementation")
100 (defmacro errorset (form display)
104 (declare (ignorable e))
106 (format t "~&Error: ~A~%" e)))))
108 (defun close-passive-socket (socket)
109 #+allegro (close socket)
110 #+clisp (ext:socket-server-close socket)
111 #+cmu (unix:unix-close socket)
112 #+sbcl (sb-unix:unix-close
113 (sb-bsd-sockets:socket-file-descriptor socket))
114 #+openmcl (close socket)
115 #-(or allegro clisp cmu sbcl openmcl)
116 (warn "close-passive-socket not supported on this implementation")
120 (defun close-active-socket (socket)
121 #+sbcl (sb-bsd-sockets:socket-close socket)
122 #-sbcl (close socket))
124 (defun ipaddr-to-dotted (ipaddr &key values)
125 "Convert from 32-bit integer to dotted string."
126 (declare (type (unsigned-byte 32) ipaddr))
127 (let ((a (logand #xff (ash ipaddr -24)))
128 (b (logand #xff (ash ipaddr -16)))
129 (c (logand #xff (ash ipaddr -8)))
130 (d (logand #xff ipaddr)))
133 (format nil "~d.~d.~d.~d" a b c d))))
135 (defun dotted-to-ipaddr (dotted &key (errorp t))
136 "Convert from dotted string to 32-bit integer."
137 (declare (string dotted))
139 (let ((ll (delimited-string-to-list dotted #\.)))
140 (+ (ash (parse-integer (first ll)) 24)
141 (ash (parse-integer (second ll)) 16)
142 (ash (parse-integer (third ll)) 8)
143 (parse-integer (fourth ll))))
145 (let ((ll (delimited-string-to-list dotted #\.)))
146 (+ (ash (parse-integer (first ll)) 24)
147 (ash (parse-integer (second ll)) 16)
148 (ash (parse-integer (third ll)) 8)
149 (parse-integer (fourth ll)))))))
152 (defun ipaddr-to-hostname (ipaddr &key ignore-cache)
154 (warn ":IGNORE-CACHE keyword in IPADDR-TO-HOSTNAME not supported."))
155 (sb-bsd-sockets:host-ent-name
156 (sb-bsd-sockets:get-host-by-address
157 (sb-bsd-sockets:make-inet-address ipaddr))))
160 (defun lookup-hostname (host &key ignore-cache)
162 (warn ":IGNORE-CACHE keyword in LOOKUP-HOSTNAME not supported."))
164 (sb-bsd-sockets:host-ent-address
165 (sb-bsd-sockets:get-host-by-name host))
166 (dotted-to-ipaddr (ipaddr-to-dotted host))))
169 (defun make-active-socket (server port)
170 "Returns (VALUES STREAM SOCKET)"
172 (let ((sock (socket:make-socket :remote-host server
176 (let ((sock (comm:open-tcp-stream server port)))
179 (let ((sock (make-instance 'sb-bsd-sockets:inet-socket
182 (sb-bsd-sockets:socket-connect sock (lookup-hostname server) port)
184 (sb-bsd-sockets:socket-make-stream
185 sock :input t :output t :element-type :default)
188 (let ((sock (ext:connect-to-inet-socket server port)))
190 (sys:make-fd-stream sock :input t :output t :element-type 'base-char)
193 (let ((sock (ext:socket-connect port server)))
196 (let ((sock (ccl:make-socket :remote-host server :remote-port port )))
200 (defun ipaddr-array-to-dotted (array)
201 (format nil "~{~D~^.~}" (coerce array 'list))
203 (format nil "~D.~D.~D.~D"
204 (aref 0 array) (aref 1 array) (aref 2 array) (array 3 array)))
206 (defun remote-host (socket)
207 #+allegro (socket:ipaddr-to-dotted (socket:remote-host socket))
208 #+lispworks (nth-value 0 (comm:get-socket-peer-address socket))
209 #+sbcl (ipaddr-array-to-dotted
210 (nth-value 0 (sb-bsd-sockets:socket-peername socket)))
211 #+cmu (nth-value 0 (ext:get-peer-host-and-port socket))
212 #+clisp (let* ((peer (ext:socket-stream-peer socket t))
213 (stop (position #\Space peer)))
214 ;; 2.37-2.39 had do-not-resolve-p backwards
215 (if stop (subseq peer 0 stop) peer))
216 #+openmcl (ccl:remote-host socket)