1 ;;;; -*- Mode: Lisp; Syntax: ANSI-Common-Lisp; Base: 10; Package: modlisp -*-
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
11 ;;;; *************************************************************************
15 (eval-when (:compile-toplevel :load-toplevel :execute)
16 #+sbcl (require :sb-bsd-sockets)
17 #+lispworks (require "comm")
18 #+allegro (require :socket))
22 (defun listen-to-inet-port (&key (port 0) (kind :stream) (reuse nil))
23 "Create, bind and listen to an inet socket on *:PORT.
24 setsockopt SO_REUSEADDR if :reuse is not nil"
25 (let ((socket (make-instance 'sb-bsd-sockets:inet-socket
29 (setf (sb-bsd-sockets:sockopt-reuse-address socket) t))
30 (sb-bsd-sockets:socket-bind
31 socket (sb-bsd-sockets:make-inet-address "0.0.0.0") port)
32 (sb-bsd-sockets:socket-listen socket 15)
35 (defun create-inet-listener (port &key (format :text) (reuse-address t))
36 #+cmu (declare (ignore format reuse-address))
37 #+cmu (ext:create-inet-listener port)
39 (socket:make-socket :connect :passive :local-port port :format format
43 (if (or (null port) (integerp port))
45 (error "illegal value for port: ~s" port)))
46 :reuse-address reuse-address)
47 #+sbcl (declare (ignore format))
48 #+sbcl (listen-to-inet-port :port port :reuse reuse-address)
49 #+clisp (declare (ignore format reuse-address))
50 #+clisp (ext:socket-server port)
52 (declare (ignore format))
54 (ccl:make-socket :connect :passive :local-port port
55 :reuse-address reuse-address)
56 #-(or allegro clisp cmu sbcl openmcl)
57 (warn "create-inet-listener not supported on this implementation")
60 (defun make-fd-stream (socket &key input output element-type)
62 (sys:make-fd-stream socket :input input :output output
63 :element-type element-type)
65 (sb-bsd-sockets:socket-make-stream socket :input input :output output
66 :element-type element-type)
67 #-(or cmu sbcl) (declare (ignore input output element-type))
68 #-(or cmu sbcl) socket
72 (defun accept-tcp-connection (listener)
73 "Returns (VALUES stream socket)"
75 (let ((sock (socket:accept-connection listener)))
78 (let ((sock (ext:socket-accept listener)))
82 (mp:process-wait-until-fd-usable listener :input)
83 (let ((sock (nth-value 0 (ext:accept-tcp-connection listener))))
84 (values (sys:make-fd-stream sock :input t :output t) sock)))
86 (when (sb-sys:wait-until-fd-usable
87 (sb-bsd-sockets:socket-file-descriptor listener) :input)
88 (let ((sock (sb-bsd-sockets:socket-accept listener)))
90 (sb-bsd-sockets:socket-make-stream
91 sock :element-type :default :input t :output t)
94 (let ((sock (ccl:accept-connection listener :wait t)))
96 #-(or allegro clisp cmu sbcl openmcl)
97 (warn "accept-tcp-connection not supported on this implementation")
101 (defmacro errorset (form display)
105 (declare (ignorable e))
107 (format t "~&Error: ~A~%" e)))))
109 (defun close-passive-socket (socket)
110 #+allegro (close socket)
111 #+clisp (ext:socket-server-close socket)
112 #+cmu (unix:unix-close socket)
113 #+sbcl (sb-unix:unix-close
114 (sb-bsd-sockets:socket-file-descriptor socket))
115 #+openmcl (close socket)
116 #-(or allegro clisp cmu sbcl openmcl)
117 (warn "close-passive-socket not supported on this implementation")
121 (defun close-active-socket (socket)
122 #+sbcl (sb-bsd-sockets:socket-close socket)
123 #-sbcl (close socket))
125 (defun ipaddr-to-dotted (ipaddr &key values)
126 "Convert from 32-bit integer to dotted string."
127 (declare (type (unsigned-byte 32) ipaddr))
128 (let ((a (logand #xff (ash ipaddr -24)))
129 (b (logand #xff (ash ipaddr -16)))
130 (c (logand #xff (ash ipaddr -8)))
131 (d (logand #xff ipaddr)))
134 (format nil "~d.~d.~d.~d" a b c d))))
136 (defun dotted-to-ipaddr (dotted &key (errorp t))
137 "Convert from dotted string to 32-bit integer."
138 (declare (string dotted))
140 (let ((ll (delimited-string-to-list dotted #\.)))
141 (+ (ash (parse-integer (first ll)) 24)
142 (ash (parse-integer (second ll)) 16)
143 (ash (parse-integer (third ll)) 8)
144 (parse-integer (fourth ll))))
146 (let ((ll (delimited-string-to-list dotted #\.)))
147 (+ (ash (parse-integer (first ll)) 24)
148 (ash (parse-integer (second ll)) 16)
149 (ash (parse-integer (third ll)) 8)
150 (parse-integer (fourth ll)))))))
153 (defun ipaddr-to-hostname (ipaddr &key ignore-cache)
155 (warn ":IGNORE-CACHE keyword in IPADDR-TO-HOSTNAME not supported."))
156 (sb-bsd-sockets:host-ent-name
157 (sb-bsd-sockets:get-host-by-address
158 (sb-bsd-sockets:make-inet-address ipaddr))))
161 (defun lookup-hostname (host &key ignore-cache)
163 (warn ":IGNORE-CACHE keyword in LOOKUP-HOSTNAME not supported."))
165 (sb-bsd-sockets:host-ent-address
166 (sb-bsd-sockets:get-host-by-name host))
167 (dotted-to-ipaddr (ipaddr-to-dotted host))))
170 (defun make-active-socket (server port)
171 "Returns (VALUES STREAM SOCKET)"
173 (let ((sock (socket:make-socket :remote-host server
177 (let ((sock (comm:open-tcp-stream server port)))
180 (let ((sock (make-instance 'sb-bsd-sockets:inet-socket
183 (sb-bsd-sockets:socket-connect sock (lookup-hostname server) port)
185 (sb-bsd-sockets:socket-make-stream
186 sock :input t :output t :element-type :default)
189 (let ((sock (ext:connect-to-inet-socket server port)))
191 (sys:make-fd-stream sock :input t :output t :element-type 'base-char)
194 (let ((sock (ext:socket-connect port server)))
197 (let ((sock (ccl:make-socket :remote-host server :remote-port port )))
201 (defun ipaddr-array-to-dotted (array)
202 (format nil "~{~D~^.~}" (coerce array 'list))
204 (format nil "~D.~D.~D.~D"
205 (aref 0 array) (aref 1 array) (aref 2 array) (array 3 array)))
207 (defun remote-host (socket)
208 #+allegro (socket:ipaddr-to-dotted (socket:remote-host socket))
209 #+lispworks (nth-value 0 (comm:get-socket-peer-address socket))
210 #+sbcl (ipaddr-array-to-dotted
211 (nth-value 0 (sb-bsd-sockets:socket-peername socket)))
212 #+cmu (nth-value 0 (ext:get-peer-host-and-port socket))
213 #+clisp (let* ((peer (ext:socket-stream-peer socket t))
214 (stop (position #\Space peer)))
215 ;; 2.37-2.39 had do-not-resolve-p backwards
216 (if stop (subseq peer 0 stop) peer))
217 #+openmcl (ccl:remote-host socket)