/* -*-C-*- Header file for the GNU Emacs server and client C code. This file is part of GNU Emacs. Copying is permitted under those conditions described by the GNU General Public License. Copyright (C) 1989 Free Software Foundation, Inc. Author: Andy Norman (ange@hplb.hpl.hp.com), based on          'etc/server.c' and 'etc/emacsclient.c' from the 18.52 GNU         Emacs distribution. Please mail bugs and suggestions to the author at the above address.*//* HISTORY  * 11-Nov-1990		bristor@simba	 *    Added EOT stuff. *//* * This file incorporates new features added by Bob Weiner <weiner@mot.com>, * Darrell Kindred <dkindred@cmu.edu> and Arup Mukherjee <arup@cmu.edu>. * Please see the note at the end of the README file for details. * * (If gnuserv came bundled with your emacs, the README file is probably * ../etc/gnuserv.README relative to the directory containing this file) */static char header_rcsid [] = "$Header: gnuserv.h,v 2.3 94/09/08 17:18:10 arup Exp $";#define NO_SHORTNAMES#define PATCHLEVEL 2#define NO_SHORTNAMES/* XXX change to "../src/config.h" if included with emacs */#include <config.h>#undef read#undef write#undef open#undef close#undef signal/* Define the communication method between server and clients: *   You can have either or both kinds of sockets, but you can't mix *   sockets with sysv ipc */#define INTERNET_DOMAIN_SOCKETS#define UNIX_DOMAIN_SOCKETS /* #define SYSV_IPC  */#if !defined(SYSV_IPC) && !defined(UNIX_DOMAIN_SOCKETS) && !defined(INTERNET_DOMAIN_SOCKETS)#ifdef HAVE_SYSVIPC#define SYSV_IPC		/* SYSV systems use SYSV IPC by default */#endif /* HAVE_SYSVIPC */#ifdef BSD#define UNIX_DOMAIN_SOCKETS	/* BSD systems use Unix Domain sockets by default */#endif /* BSD */#endif /* No communication method pre-defined */#include <sys/types.h>#include <sys/param.h>#include <stdio.h>#ifdef STDC_HEADERS#include <stdlib.h>#include <string.h>#endif#include <signal.h>#include <errno.h>#ifdef HAVE_UNISTD_H#include <unistd.h>#endif#ifdef HAVE_SYS_TIME_H#include <sys/time.h>#endif/* * If you are using SYSV_IPC, you might want to make the buffer size bigger * since it limits the size of requests and responses. Don't make it bigger * than your system's max message size though (usually a couple of k) or else * msgsend will start failing. For sockets, using the system BUFSIZ is usually * what you want.  */# define GSERV_BUFSZ BUFSIZ#ifdef SYSV_IPC#include <sys/ipc.h>#include <sys/msg.h>#define send_string(s,str) \  if (strlen(msgp->mtext) + strlen(str) < GSERV_BUFSZ) \     strcat(msgp->mtext,str); \  else \  { \    fprintf(stderr,"%s: not enough message buffer space\n",progname); \     exit(1); \  } \#endif /* SYSV_IPC */#if defined(INTERNET_DOMAIN_SOCKETS) || defined(UNIX_DOMAIN_SOCKETS)#include <sys/socket.h>#endif /* INTERNET_DOMAIN_SOCKETS || UNIX_DOMAIN_SOCKETS */#ifdef INTERNET_DOMAIN_SOCKETS#include <netdb.h>#include <netinet/in.h>#include <arpa/inet.h>#define TABLE_SIZE 101		/* The number of entries in the hash table */#define HASH(host) host		/* Rather simplistic hash function */#define DEFAULT_PORT 21490	/* default port number to use is				 * DEFAULT_PORT + uid */#endif /* INTERNET_DOMAIN_SOCKETS */#ifdef UNIX_DOMAIN_SOCKETS#include <sys/un.h>#define HIDE_UNIX_SOCKET	/* put the unix socket in a protected dir */#endif /* UNIX_DOMAIN_SOCKETS *//* On some platforms, we need to do the equivalent of "stty litout" to get * characters like ^D to pass through to emacs.  This problem has only * been observed under emacs18; fsf19 and lemacs are probably okay without it. */#ifndef DONT_USE_LITOUT#if !defined(HAVE_TERMIO) && !defined(HAVE_TERMIOS) && !defined(VMS)#if !defined(MSDOS) && !defined(BSD4_1)#define USE_LITOUT#endif#endif#endif#define HOSTNAMSZ 255		/* max size of a hostname */#define REPLYSIZ 300		/* max size of reply from server to client */#undef FALSE#define FALSE 0#undef TRUE#define TRUE 1extern char *getenv();extern char *optarg;extern int optind;extern char *progname;#ifndef BSDextern char *getcwd();#endif#define max2(x,y) (((x) > (y)) ? (x) : (y))#define min2(x,y) (((x) < (y)) ? (x) : (y))#ifndef _NFILE            /* rough guess at maximum number of open files */#define _NFILE 20#endif#define EOT_STR "\004"#define EOT_CHR '\004'/* connection types */#define CONN_UNIX     0#define CONN_INTERNET 1#define CONN_IPC      2