/usr/share/common-lisp/source/clx/sockcl.lisp is in cl-clx-sbcl 0.7.4.20160323-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 | ;;; -*- Mode: LISP; Syntax: Common-lisp; Package: XLIB; Base: 10; Lowercase: Yes -*-
;;;; Server Connection for kcl and ibcl
;;; Copyright (C) 1987, 1989 Massachussetts Institute of Technology
;;;
;;; Permission is granted to any individual or institution to use, copy,
;;; modify, and distribute this software, provided that this complete
;;; copyright and permission notice is maintained, intact, in all copies and
;;; supporting documentation.
;;;
;;; Massachussetts Institute of Technology provides this software "as is"
;;; without express or implied warranty.
;;;
;;; Adapted from code by Roman Budzianowski - Project Athena/MIT
;;; make-two-way-stream is probably not a reasonable thing to do.
;;; A close on a two way stream probably does not close the substreams.
;;; I presume an :io will not work (maybe because it uses 1 buffer?).
;;; There should be some fast io (writes and reads...).
;;; Compile this file with compile-file.
;;; Load it with (si:faslink "sockcl.o" "socket.o -lc")
(in-package :xlib)
;;; The cmpinclude.h file does not have this type definition from
;;; <kcldistribution>/h/object.h. We include it here so the
;;; compile-file will work without figuring out where the distribution
;;; directory is located.
;;;
(CLINES "
enum smmode { /* stream mode */
smm_input, /* input */
smm_output, /* output */
smm_io, /* input-output */
smm_probe, /* probe */
smm_synonym, /* synonym */
smm_broadcast, /* broadcast */
smm_concatenated, /* concatenated */
smm_two_way, /* two way */
smm_echo, /* echo */
smm_string_input, /* string input */
smm_string_output, /* string output */
smm_user_defined /* for user defined */
};
")
#-akcl
(CLINES "
struct stream {
short t, m;
FILE *sm_fp; /* file pointer */
object sm_object0; /* some object */
object sm_object1; /* some object */
int sm_int0; /* some int */
int sm_int1; /* some int */
short sm_mode; /* stream mode */
/* of enum smmode */
};
")
;;;; Connect to the server.
;;; A lisp string is not a reasonable type for C, so copy the characters
;;; out and then call connect_to_server routine defined in socket.o
(CLINES "
int
konnect_to_server(host,display)
object host; /* host name */
int display; /* display number */
{
int fd; /* file descriptor */
int i;
char hname[BUFSIZ];
FILE *fout, *fin;
if (host->st.st_fillp > BUFSIZ - 1)
too_long_file_name(host);
for (i = 0; i < host->st.st_fillp; i++)
hname[i] = host->st.st_self[i];
hname[i] = '\\0'; /* doubled backslash for lisp */
fd = connect_to_server(hname,display);
return(fd);
}
")
(defentry konnect-to-server (object int) (int "konnect_to_server"))
;;;; Make a one-way stream from a file descriptor.
(CLINES "
object
konnect_stream(host,fd,flag,elem)
object host; /* not really used */
int fd; /* file descriptor */
int flag; /* 0 input, 1 output */
object elem; /* 'string-char */
{
struct stream *stream;
char *mode; /* file open mode */
FILE *fp; /* file pointer */
enum smmode smm; /* lisp mode (a short) */
vs_mark;
switch(flag){
case 0:
smm = smm_input;
mode = \"r\";
break;
case 1:
smm = smm_output;
mode = \"w\";
break;
default:
FEerror(\"konnect_stream : wrong mode\");
}
fp = fdopen(fd,mode);
if (fp == NULL) {
stream = Cnil;
vs_push(stream);
} else {
stream = alloc_object(t_stream);
stream->sm_mode = (short)smm;
stream->sm_fp = fp;
stream->sm_object0 = elem;
stream->sm_object1 = host;
stream->sm_int0 = stream->sm.sm_int1 = 0;
vs_push(stream);
setbuf(fp, alloc_contblock(BUFSIZ));
}
vs_reset;
return(stream);
}
")
(defentry konnect-stream (object int int object) (object "konnect_stream"))
;;;; Open an X stream
(defun open-socket-stream (host display)
(when (not (and (typep host 'string) ; sanity check the arguments
(typep display 'fixnum)))
(error "Host ~s or display ~s are bad." host display))
(let ((fd (konnect-to-server host display))) ; get a file discriptor
(if (< fd 0)
NIL
(let ((stream-in (konnect-stream host fd 0 'string-char)) ; input
(stream-out (konnect-stream host fd 1 'string-char))) ; output
(if (or (null stream-in) (null stream-out))
(error "Could not make i/o streams for fd ~d." fd))
(make-two-way-stream stream-in stream-out))
)))
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