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OS/2 Shareware BBS: 22 gnu
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gnusrvr2.zip
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gnuserv.h
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1997-05-13
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/* -*-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 2.4 95/02/16 11:58:11 arup alpha $";
#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 */
/*
* Define additional authentication protocols to be used. These methods will
* be tried before falling back to the default gnuserv protocol (based on
* the GNU_SECURE environment variable). Currently, only MIT-MAGIC-COOKIE-1
* is also supported.
*
* Comment out the next line(s) if you don't want to enable the
* appropriate authentication protocol.
*/
/*
#define AUTH_MAGIC_COOKIE
*/
/*
* stuff related to supporting MIT-MAGIC-COOKIE-1
*/
#define MCOOKIE_SCREEN "999" /* screen # to use as the gnuserv cookie */
#define MCOOKIE_NAME "MAGIC-1" /* authentication protocol name */
#define MCOOKIE_X_NAME "MIT-MAGIC-COOKIE-1" /* as needed by X */
#define DEFAUTH_NAME "GNU-SECURE" /* name of default auth protocol */
#define AUTH_TIMEOUT 15 /* # seconds to wait for auth data */
#define AUTH_NAMESZ 15 /* max allows auth protocol name size */
/*
* Pick a default communication scheme, if none was specified.
*/
#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 <sys/stat.h>
#include <stdio.h>
#ifdef STDC_HEADERS
#include <stdlib.h>
#include <string.h>
/* This next one is picked up from FSF gnu-emacs v19's regex.c ... */
# ifndef bcmp
# define bcmp(s1, s2, n) memcmp ((s1), (s2), (n))
# endif
#endif /* STDC_HEADERS */
#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 1
extern char *getenv();
extern char *optarg;
extern int optind;
extern char *progname;
#ifndef BSD
extern 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
/* function declarations */
extern int make_connection();
#ifdef SYSV_IPC
extern void disconnect_from_ipc_server();
#endif
#if defined(INTERNET_DOMAIN_SOCKETS) || defined(UNIX_DOMAIN_SOCKETS)
extern void send_string();
extern void disconnect_from_server();
#endif
#ifdef INTERNET_DOMAIN_SOCKETS
extern int internet_addr();
#endif