Mercurial > hg > xemacs-beta
annotate lib-src/tcp.c @ 5630:f5315ccbf005
Cons less, be more careful about always using the environment, #'macroexpand
2011-12-30 Aidan Kehoe <kehoea@parhasard.net>
* eval.c (Fmacroexpand):
Don't cons if ENVIRONMENT is the same object as
byte-compile-macro-environment.
Always look up symbol- and other macros in the (possibly modified)
byte-compile-macro-environment, not the supplied ENVIRONMENT.
byte-compile-macro-environment reflects ENVIRONMENT, so that's OK
and preferred.
| author | Aidan Kehoe <kehoea@parhasard.net> |
|---|---|
| date | Fri, 30 Dec 2011 12:43:52 +0000 |
| parents | b9167d522a9a |
| children |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 613 | 2 * TCP/IP stream emulation for XEmacs. |
| 0 | 3 * Copyright (C) 1988, 1989, 1992, 1993 Free Software Foundation, Inc. |
| 4 | |
| 5 * Author: Masanobu Umeda | |
| 6 * Maintainer: umerin@mse.kyutech.ac.jp | |
| 7 | |
| 613 | 8 This file is part of XEmacs. |
| 0 | 9 |
|
5406
061f4f90f874
Convert lib-src/ to GPLv3.
Mike Sperber <sperber@deinprogramm.de>
parents:
978
diff
changeset
|
10 XEmacs is free software: you can redistribute it and/or modify it |
|
061f4f90f874
Convert lib-src/ to GPLv3.
Mike Sperber <sperber@deinprogramm.de>
parents:
978
diff
changeset
|
11 under the terms of the GNU General Public License as published by the |
|
061f4f90f874
Convert lib-src/ to GPLv3.
Mike Sperber <sperber@deinprogramm.de>
parents:
978
diff
changeset
|
12 Free Software Foundation, either version 3 of the License, or (at your |
|
061f4f90f874
Convert lib-src/ to GPLv3.
Mike Sperber <sperber@deinprogramm.de>
parents:
978
diff
changeset
|
13 option) any later version. |
| 0 | 14 |
|
5406
061f4f90f874
Convert lib-src/ to GPLv3.
Mike Sperber <sperber@deinprogramm.de>
parents:
978
diff
changeset
|
15 XEmacs is distributed in the hope that it will be useful, but WITHOUT |
|
061f4f90f874
Convert lib-src/ to GPLv3.
Mike Sperber <sperber@deinprogramm.de>
parents:
978
diff
changeset
|
16 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
|
061f4f90f874
Convert lib-src/ to GPLv3.
Mike Sperber <sperber@deinprogramm.de>
parents:
978
diff
changeset
|
17 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
|
061f4f90f874
Convert lib-src/ to GPLv3.
Mike Sperber <sperber@deinprogramm.de>
parents:
978
diff
changeset
|
18 for more details. |
| 0 | 19 |
| 20 You should have received a copy of the GNU General Public License | |
|
5406
061f4f90f874
Convert lib-src/ to GPLv3.
Mike Sperber <sperber@deinprogramm.de>
parents:
978
diff
changeset
|
21 along with XEmacs. If not, see <http://www.gnu.org/licenses/>. |
| 0 | 22 |
| 23 * | |
| 24 * Yasunari, Itoh at PFU limited contributed for Fujitsu UTS and SX/A. | |
| 25 * | |
| 26 * Thu Apr 6 13:47:37 JST 1989 | |
| 27 * USG fixes by Sakaeda <saka@mickey.trad.pf.fujitsu.junet> | |
| 28 * | |
| 29 * For Fujitsu UTS compile with: | |
| 30 * cc -O -o tcp tcp.c -DFUJITSU_UTS -lu -lsocket | |
| 31 */ | |
| 32 | |
| 978 | 33 #ifdef HAVE_CONFIG_H |
| 34 #include <config.h> | |
| 35 #endif | |
| 0 | 36 #include <stdio.h> |
| 37 #include <fcntl.h> | |
| 38 #include <ctype.h> | |
| 39 #include <sys/types.h> | |
| 40 | |
| 41 #ifdef FUJITSU_UTS | |
| 42 #define USG | |
| 43 #include <sys/ucbtypes.h> | |
| 44 #include <sys/tisp/socket.h> | |
| 45 #include <netdb.h> | |
| 46 #include <sys/tisp/in.h> | |
| 47 #else | |
| 48 #include <sys/socket.h> | |
| 49 #include <netdb.h> | |
| 50 #include <netinet/in.h> | |
| 51 #endif | |
| 52 | |
| 53 #ifdef USG | |
| 54 #include <sys/stat.h> | |
| 978 | 55 #include "syssignal.h" |
| 0 | 56 #endif |
| 57 | |
| 58 #ifdef USG | |
| 59 int selectable = 1; | |
| 60 | |
| 61 sigout () | |
| 62 { | |
| 63 fcntl (fileno (stdin), F_SETFL, 0); | |
| 64 exit (-1); | |
| 65 } | |
| 66 #endif | |
| 67 | |
| 68 main (argc, argv) | |
| 69 int argc; | |
| 70 char *argv[]; | |
| 71 { | |
| 72 struct hostent *host; | |
| 73 struct sockaddr_in sockin, sockme; | |
| 74 struct servent *serv; | |
| 75 char *hostname = NULL; | |
| 76 char *service = "nntp"; | |
| 77 int port; | |
| 78 int readfds; | |
| 79 int writefds; | |
| 80 int server; /* NNTP Server */ | |
| 81 int emacsIn = fileno (stdin); /* Emacs intput */ | |
| 82 int emacsOut = fileno (stdout); /* Emacs output */ | |
| 83 char buffer[1024]; | |
| 84 int nbuffer; /* Number of bytes in buffer */ | |
| 85 int wret; | |
| 86 char *retry; /* retry bufferp */ | |
| 87 int false = 0; /* FALSE flag for setsockopt () */ | |
| 88 | |
| 89 if (argc < 2) | |
| 90 { | |
| 91 fprintf (stderr, "Usage: %s HOST [SERVICE]\n", argv[0]); | |
| 92 exit (1); | |
| 93 } | |
| 94 if (argc >= 2) | |
| 95 hostname = argv[1]; | |
| 96 if (argc >= 3) | |
| 97 service = argv[2]; | |
| 98 | |
| 99 if ((host = gethostbyname (hostname)) == NULL) | |
| 100 { | |
| 101 perror ("gethostbyname"); | |
| 102 exit (1); | |
| 103 } | |
| 104 if (isdigit (service[0])) | |
| 105 port = atoi (service); | |
| 106 else | |
| 107 { | |
| 108 serv = getservbyname (service, "tcp"); | |
| 109 if (serv == NULL) | |
| 110 { | |
| 111 perror ("getservbyname"); | |
| 112 exit (1); | |
| 113 } | |
| 114 port = serv->s_port; | |
| 115 } | |
| 116 | |
| 117 memset (&sockin, 0, sizeof (sockin)); | |
| 118 sockin.sin_family = host->h_addrtype; | |
| 119 memcpy (&sockin.sin_addr, host->h_addr, host->h_length); | |
| 120 sockin.sin_port = port; | |
| 121 if ((server = socket (AF_INET, SOCK_STREAM, 0)) < 0) | |
| 122 { | |
| 123 perror ("socket"); | |
| 124 exit (1); | |
| 125 } | |
| 126 if (setsockopt (server, SOL_SOCKET, SO_REUSEADDR, &false, sizeof (false))) | |
| 127 { | |
| 128 perror ("setsockopt"); | |
| 129 exit (1); | |
| 130 } | |
| 131 memset (&sockme, 0, sizeof (sockme)); | |
| 132 sockme.sin_family = sockin.sin_family; | |
| 133 sockme.sin_addr.s_addr = INADDR_ANY; | |
| 134 if (bind (server, &sockme, sizeof (sockme)) < 0) | |
| 135 { | |
| 136 perror ("bind"); | |
| 137 exit (1); | |
| 138 } | |
| 139 if (connect (server, &sockin, sizeof (sockin)) < 0) | |
| 140 { | |
| 141 perror ("connect"); | |
| 142 close (server); | |
| 143 exit (1); | |
| 144 } | |
| 145 | |
| 146 #ifdef O_NDELAY | |
| 147 fcntl (server, F_SETFL, O_NDELAY); | |
| 148 | |
| 149 #ifdef USG | |
| 150 /* USG pipe cannot not select emacsIn */ | |
| 151 { | |
| 152 struct stat statbuf; | |
| 153 fstat (emacsIn, &statbuf); | |
| 154 if (statbuf.st_mode & 010000) | |
| 155 selectable = 0; | |
| 156 if (!selectable) | |
| 157 { | |
| 158 signal (SIGINT, sigout); | |
| 159 fcntl (emacsIn, F_SETFL, O_NDELAY); | |
| 160 } | |
| 161 } | |
| 162 #endif | |
| 163 #endif | |
| 164 | |
| 165 /* Connection established. */ | |
| 166 while (1) | |
| 167 { | |
| 168 readfds = (1 << server) | (1 << emacsIn); | |
| 169 if (select (32, &readfds, NULL, NULL, (struct timeval *)NULL) == -1) | |
| 170 { | |
| 171 perror ("select"); | |
| 172 exit (1); | |
| 173 } | |
| 174 if (readfds & (1 << emacsIn)) | |
| 175 { | |
| 176 /* From Emacs */ | |
| 177 nbuffer = read (emacsIn, buffer, sizeof buffer -1); | |
| 178 | |
| 179 #ifdef USG | |
| 180 if (selectable && nbuffer == 0) | |
| 181 { | |
| 182 goto finish; | |
| 183 } | |
| 184 else if (!(readfds & (1 << server)) && nbuffer == 0) | |
| 185 { | |
| 186 sleep (1); | |
| 187 } | |
| 188 else | |
| 189 #else | |
| 190 if (nbuffer == 0) | |
| 191 goto finish; | |
| 192 #endif | |
| 193 for (retry = buffer; nbuffer > 0; nbuffer -= wret, retry += wret) | |
| 194 { | |
| 195 writefds = 1 << server; | |
| 196 if (select (server+1, NULL, &writefds, NULL, (struct timeval*)NULL) == -1) | |
| 197 { | |
| 198 perror ("select"); | |
| 199 exit (1); | |
| 200 } | |
| 201 wret = write (server, retry, nbuffer); | |
| 202 if (wret < 0) goto finish; | |
| 203 } | |
| 204 } | |
| 205 if (readfds & (1 << server)) | |
| 206 { | |
| 207 /* From NNTP server */ | |
| 208 nbuffer = read (server, buffer, sizeof buffer -1); | |
| 209 if (nbuffer == 0) | |
| 210 goto finish; | |
| 211 for (retry = buffer; nbuffer > 0; nbuffer -= wret, retry += wret) | |
| 212 { | |
| 213 writefds = 1 << emacsOut; | |
| 214 #ifdef USG | |
| 215 if (selectable) | |
| 216 #endif | |
| 217 if (select (emacsOut+1, NULL, &writefds, NULL, (struct timeval*)NULL) == -1) | |
| 218 { | |
| 219 perror ("select"); | |
| 220 exit (1); | |
| 221 } | |
| 222 wret = write (emacsOut, retry, nbuffer); | |
| 223 if (wret < 0) goto finish; | |
| 224 } | |
| 225 } | |
| 226 } | |
| 227 | |
| 228 /* End of communication. */ | |
| 229 finish: | |
| 230 close (server); | |
| 231 #ifdef USG | |
| 232 if (!selectable) fcntl (emacsIn, F_SETFL, 0); | |
| 233 #endif | |
| 234 close (emacsIn); | |
| 235 close (emacsOut); | |
| 236 exit (0); | |
| 237 } |