annotate lib-src/tcp.c @ 814:a634e3b7acc8

[xemacs-hg @ 2002-04-14 12:41:59 by ben] latest changes TODO.ben-mule-21-5: Update. make-docfile.c: Add basic support for handling ISO 2022 doc strings -- we parse the basic charset designation sequences so we know whether we're in ASCII and have to pay attention to end quotes and such. Reformat code according to coding standards. abbrev.el: Add `global-abbrev-mode', which turns on or off abbrev-mode in all buffers. Added `defining-abbrev-turns-on-abbrev-mode' -- if non-nil, defining an abbrev through an interactive function will automatically turn on abbrev-mode, either globally or locally depending on the command. This is the "what you'd expect" behavior. indent.el: general function for indenting a balanced expression in a mode-correct way. Works similar to indent-region in that a mode can specify a specific command to do the whole operation; if not, figure out the region using forward-sexp and indent each line using indent-according-to-mode. keydefs.el: Removed. Modify M-C-backslash to do indent-region-or-balanced-expression. Make S-Tab just insert a TAB char, like it's meant to do. make-docfile.el: Now that we're using the call-process-in-lisp, we need to load an extra file win32-native.el because we're running a bare temacs. menubar-items.el: Totally redo the Cmds menu so that most used commands appear directly on the menu and less used commands appear in submenus. The old way may have been very pretty, but rather impractical. process.el: Under Windows, don't ever use old-call-process-internal, even in batch mode. We can do processes in batch mode. subr.el: Someone recoded truncate-string-to-width, saying "the FSF version is too complicated and does lots of hard-to-understand stuff" but the resulting recoded version was *totally* wrong! it misunderstood the basic point of this function, which is work in *columns* not chars. i dumped ours and copied the version from FSF 21.1. Also added truncate-string-with-continuation-dots, since this idiom is used often. config.inc.samp, xemacs.mak: Separate out debug and optimize flags. Remove all vestiges of USE_MINIMAL_TAGBITS, USE_INDEXED_LRECORD_IMPLEMENTATION, and GUNG_HO, since those ifdefs have long been removed. Make error-checking support actually work. Some rearrangement of config.inc.samp to make it more logical. Remove callproc.c and ntproc.c from xemacs.mak, no longer used. Make pdump the default. lisp.h: Add support for strong type-checking of Bytecount, Bytebpos, Charcount, Charbpos, and others, by making them classes, overloading the operators to provide integer-like operation and carefully controlling what operations are allowed. Not currently enabled in C++ builds because there are still a number of compile errors, and it won't really work till we merge in my "8-bit-Mule" workspace, in which I make use of the new types Charxpos, Bytexpos, Memxpos, representing a "position" either in a buffer or a string. (This is especially important in the extent code.) abbrev.c, alloc.c, eval.c, buffer.c, buffer.h, editfns.c, fns.c, text.h: Warning fixes, some of them related to new C++ strict type checking of Bytecount, Charbpos, etc. dired.c: Caught an actual error due to strong type checking -- char len being passed when should be byte len. alloc.c, backtrace.h, bytecode.c, bytecode.h, eval.c, sysdep.c: Further optimize Ffuncall: -- process arg list at compiled-function creation time, converting into an array for extra-quick access at funcall time. -- rewrite funcall_compiled_function to use it, and inline this function. -- change the order of check for magic stuff in SPECBIND_FAST_UNSAFE to be faster. -- move the check for need to garbage collect into the allocation code, so only a single flag needs to be checked in funcall. buffer.c, symbols.c: add debug funs to check on mule optimization info in buffers and strings. eval.c, emacs.c, text.c, regex.c, scrollbar-msw.c, search.c: Fix evil crashes due to eistrings not properly reinitialized under pdump. Redo a bit some of the init routines; convert some complex_vars_of() into simple vars_of(), because they didn't need complex processing. callproc.c, emacs.c, event-stream.c, nt.c, process.c, process.h, sysdep.c, sysdep.h, syssignal.h, syswindows.h, ntproc.c: Delete. Hallelujah, praise the Lord, there is no god but Allah!!! fix so that processes can be invoked in bare temacs -- thereby eliminating any need for callproc.c. (currently only eliminated under NT.) remove all crufty and unnecessary old process code in ntproc.c and elsewhere. move non-callproc-specific stuff (mostly environment) into process.c, so callproc.c can be left out under NT. console-tty.c, doc.c, file-coding.c, file-coding.h, lstream.c, lstream.h: fix doc string handling so it works with Japanese, etc docs. change handling of "character mode" so callers don't have to manually set it (quite error-prone). event-msw.c: spacing fixes. lread.c: eliminate unused crufty vintage-19 "FSF defun hack" code. lrecord.h: improve pdump description docs. buffer.c, ntheap.c, unexnt.c, win32.c, emacs.c: Mule-ize some unexec and startup code. It was pseudo-Mule-ized before by simply always calling the ...A versions of functions, but that won't cut it -- eventually we want to be able to run properly even if XEmacs has been installed in a Japanese directory. (The current problem is the timing of the loading of the Unicode tables; this will eventually be fixed.) Go through and fix various other places where the code was not Mule-clean. Provide a function mswindows_get_module_file_name() to get our own name without resort to PATH_MAX and such. Add a big comment in main() about the problem with Unicode table load timing that I just alluded to. emacs.c: When error-checking is enabled (interpreted as "user is developing XEmacs"), don't ask user to "pause to read messages" when a fatal error has occurred, because it will wedge if we are in an inner modal loop (typically when a menu is popped up) and make us unable to get a useful stack trace in the debugger. text.c: Correct update_entirely_ascii_p_flag to actually work. lisp.h, symsinit.h: declarations for above changes.
author ben
date Sun, 14 Apr 2002 12:43:31 +0000
parents 023b83f4e54b
children 13e47461d509
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1 /*
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2 * TCP/IP stream emulation for XEmacs.
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3 * Copyright (C) 1988, 1989, 1992, 1993 Free Software Foundation, Inc.
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4
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5 * Author: Masanobu Umeda
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6 * Maintainer: umerin@mse.kyutech.ac.jp
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7
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8 This file is part of XEmacs.
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9
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10 XEmacs is free software; you can redistribute it and/or modify
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11 it under the terms of the GNU General Public License as published by
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12 the Free Software Foundation; either version 2, or (at your option)
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13 any later version.
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14
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15 XEmacs is distributed in the hope that it will be useful,
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16 but WITHOUT ANY WARRANTY; without even the implied warranty of
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17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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18 GNU General Public License for more details.
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19
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20 You should have received a copy of the GNU General Public License
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21 along with XEmacs; see the file COPYING. If not, write to
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22 the Free the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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23 Boston, MA 02111-1307, USA.
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24
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25 *
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26 * Yasunari, Itoh at PFU limited contributed for Fujitsu UTS and SX/A.
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27 *
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28 * Thu Apr 6 13:47:37 JST 1989
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29 * USG fixes by Sakaeda <saka@mickey.trad.pf.fujitsu.junet>
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30 *
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31 * For Fujitsu UTS compile with:
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32 * cc -O -o tcp tcp.c -DFUJITSU_UTS -lu -lsocket
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33 */
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34
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35 #include <stdio.h>
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36 #include <fcntl.h>
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37 #include <ctype.h>
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38 #include <sys/types.h>
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39
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40 #ifdef FUJITSU_UTS
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41 #define USG
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42 #include <sys/ucbtypes.h>
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43 #include <sys/tisp/socket.h>
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44 #include <netdb.h>
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45 #include <sys/tisp/in.h>
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46 #else
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47 #include <sys/socket.h>
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48 #include <netdb.h>
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49 #include <netinet/in.h>
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50 #endif
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51
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52 #ifdef USG
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53 #include <sys/stat.h>
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54 #include <signal.h>
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55 #endif
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56
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57 #ifdef USG
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58 int selectable = 1;
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59
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60 sigout ()
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61 {
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62 fcntl (fileno (stdin), F_SETFL, 0);
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63 exit (-1);
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64 }
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65 #endif
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66
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67 main (argc, argv)
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68 int argc;
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69 char *argv[];
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70 {
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71 struct hostent *host;
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72 struct sockaddr_in sockin, sockme;
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73 struct servent *serv;
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74 char *hostname = NULL;
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75 char *service = "nntp";
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76 int port;
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77 int readfds;
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78 int writefds;
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79 int server; /* NNTP Server */
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80 int emacsIn = fileno (stdin); /* Emacs intput */
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81 int emacsOut = fileno (stdout); /* Emacs output */
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82 char buffer[1024];
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83 int nbuffer; /* Number of bytes in buffer */
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84 int wret;
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85 char *retry; /* retry bufferp */
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86 int false = 0; /* FALSE flag for setsockopt () */
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87
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88 if (argc < 2)
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89 {
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90 fprintf (stderr, "Usage: %s HOST [SERVICE]\n", argv[0]);
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91 exit (1);
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92 }
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93 if (argc >= 2)
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94 hostname = argv[1];
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95 if (argc >= 3)
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96 service = argv[2];
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97
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98 if ((host = gethostbyname (hostname)) == NULL)
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99 {
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100 perror ("gethostbyname");
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101 exit (1);
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102 }
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103 if (isdigit (service[0]))
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104 port = atoi (service);
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105 else
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106 {
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107 serv = getservbyname (service, "tcp");
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108 if (serv == NULL)
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109 {
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110 perror ("getservbyname");
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111 exit (1);
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112 }
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113 port = serv->s_port;
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114 }
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115
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116 memset (&sockin, 0, sizeof (sockin));
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117 sockin.sin_family = host->h_addrtype;
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118 memcpy (&sockin.sin_addr, host->h_addr, host->h_length);
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119 sockin.sin_port = port;
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120 if ((server = socket (AF_INET, SOCK_STREAM, 0)) < 0)
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121 {
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122 perror ("socket");
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123 exit (1);
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124 }
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125 if (setsockopt (server, SOL_SOCKET, SO_REUSEADDR, &false, sizeof (false)))
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126 {
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127 perror ("setsockopt");
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128 exit (1);
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129 }
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130 memset (&sockme, 0, sizeof (sockme));
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131 sockme.sin_family = sockin.sin_family;
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132 sockme.sin_addr.s_addr = INADDR_ANY;
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133 if (bind (server, &sockme, sizeof (sockme)) < 0)
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134 {
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135 perror ("bind");
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136 exit (1);
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137 }
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138 if (connect (server, &sockin, sizeof (sockin)) < 0)
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139 {
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140 perror ("connect");
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141 close (server);
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142 exit (1);
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143 }
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144
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145 #ifdef O_NDELAY
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146 fcntl (server, F_SETFL, O_NDELAY);
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147
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148 #ifdef USG
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149 /* USG pipe cannot not select emacsIn */
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150 {
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151 struct stat statbuf;
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
152 fstat (emacsIn, &statbuf);
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
153 if (statbuf.st_mode & 010000)
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
154 selectable = 0;
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
155 if (!selectable)
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
156 {
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
157 signal (SIGINT, sigout);
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
158 fcntl (emacsIn, F_SETFL, O_NDELAY);
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
159 }
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
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160 }
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
161 #endif
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
162 #endif
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
163
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
164 /* Connection established. */
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
165 while (1)
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
166 {
376386a54a3c Import from CVS: tag r19-14
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parents:
diff changeset
167 readfds = (1 << server) | (1 << emacsIn);
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
168 if (select (32, &readfds, NULL, NULL, (struct timeval *)NULL) == -1)
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
169 {
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
170 perror ("select");
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
171 exit (1);
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
172 }
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
173 if (readfds & (1 << emacsIn))
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
174 {
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
175 /* From Emacs */
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
176 nbuffer = read (emacsIn, buffer, sizeof buffer -1);
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
177
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
178 #ifdef USG
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
179 if (selectable && nbuffer == 0)
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
180 {
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
181 goto finish;
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
182 }
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
183 else if (!(readfds & (1 << server)) && nbuffer == 0)
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
184 {
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
185 sleep (1);
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
186 }
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
187 else
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
188 #else
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
189 if (nbuffer == 0)
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
190 goto finish;
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
191 #endif
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
192 for (retry = buffer; nbuffer > 0; nbuffer -= wret, retry += wret)
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
193 {
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
194 writefds = 1 << server;
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
195 if (select (server+1, NULL, &writefds, NULL, (struct timeval*)NULL) == -1)
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
196 {
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
197 perror ("select");
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
198 exit (1);
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
199 }
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
200 wret = write (server, retry, nbuffer);
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
201 if (wret < 0) goto finish;
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
202 }
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
203 }
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
204 if (readfds & (1 << server))
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
205 {
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
206 /* From NNTP server */
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
207 nbuffer = read (server, buffer, sizeof buffer -1);
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
208 if (nbuffer == 0)
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
209 goto finish;
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
210 for (retry = buffer; nbuffer > 0; nbuffer -= wret, retry += wret)
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
211 {
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
212 writefds = 1 << emacsOut;
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
213 #ifdef USG
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
214 if (selectable)
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
215 #endif
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
216 if (select (emacsOut+1, NULL, &writefds, NULL, (struct timeval*)NULL) == -1)
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
217 {
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
218 perror ("select");
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
219 exit (1);
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
220 }
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
221 wret = write (emacsOut, retry, nbuffer);
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
222 if (wret < 0) goto finish;
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
223 }
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
224 }
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
225 }
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
226
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
227 /* End of communication. */
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
228 finish:
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
229 close (server);
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
230 #ifdef USG
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
231 if (!selectable) fcntl (emacsIn, F_SETFL, 0);
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
232 #endif
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
233 close (emacsIn);
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
234 close (emacsOut);
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
235 exit (0);
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
236 }