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This commit is contained in:
Martin Baulig
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src/daemon/gnuserv.h
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src/daemon/gnuserv.h
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/* -*-C-*-
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Header file for the GNU Emacs server and client C code.
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This file is part of GNU Emacs.
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Copying is permitted under those conditions described by the GNU
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General Public License.
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Copyright (C) 1989 Free Software Foundation, Inc.
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Author: Andy Norman (ange@hplb.hpl.hp.com), based on
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'etc/server.c' and 'etc/emacsclient.c' from the 18.52 GNU
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Emacs distribution.
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Please mail bugs and suggestions to the author at the above address.
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*/
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/* HISTORY
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* 11-Nov-1990 bristor@simba
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* Added EOT stuff.
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*/
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/*
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* This file incorporates new features added by Bob Weiner <weiner@mot.com>,
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* Darrell Kindred <dkindred@cmu.edu> and Arup Mukherjee <arup@cmu.edu>.
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* Please see the note at the end of the README file for details.
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*
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* (If gnuserv came bundled with your emacs, the README file is probably
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* ../etc/gnuserv.README relative to the directory containing this file)
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*/
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#if 0
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static char header_rcsid [] = "!Header: gnuserv.h,v 2.4 95/02/16 11:58:11 arup alpha !";
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#endif
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#define NO_SHORTNAMES
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#define PATCHLEVEL 2
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#define NO_SHORTNAMES
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/* gnuserv should not be compiled using SOCKS */
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#define DO_NOT_SOCKSIFY
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#include <../src/config.h>
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#undef read
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#undef write
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#undef open
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#undef close
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#undef signal
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/* Define the communication method between server and clients:
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* You can have either or both kinds of sockets, but you can't mix
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* sockets with sysv ipc
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*/
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#define INTERNET_DOMAIN_SOCKETS
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#define UNIX_DOMAIN_SOCKETS
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/* #define SYSV_IPC */
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/*
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* Define additional authentication protocols to be used. These methods will
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* be tried before falling back to the default gnuserv protocol (based on
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* the GNU_SECURE environment variable). Currently, only MIT-MAGIC-COOKIE-1
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* is also supported.
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*
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* Comment out the next line(s) if you don't want to enable the
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* appropriate authentication protocol.
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*/
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#if defined (HAVE_XAUTH)
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#define AUTH_MAGIC_COOKIE
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#endif /* HAVE_XAUTH */
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/*
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* stuff related to supporting MIT-MAGIC-COOKIE-1
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*/
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#define MCOOKIE_SCREEN "999" /* screen # to use as the gnuserv cookie */
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#define MCOOKIE_NAME "MAGIC-1" /* authentication protocol name */
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#define MCOOKIE_X_NAME "MIT-MAGIC-COOKIE-1" /* as needed by X */
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#define DEFAUTH_NAME "GNU-SECURE" /* name of default auth protocol */
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#define AUTH_TIMEOUT 15 /* # seconds to wait for auth data */
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#define AUTH_NAMESZ 15 /* max allows auth protocol name size */
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/*
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* Pick a default communication scheme, if none was specified.
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*/
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#if !defined(SYSV_IPC) && !defined(UNIX_DOMAIN_SOCKETS) && !defined(INTERNET_DOMAIN_SOCKETS)
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#ifdef HAVE_SYSVIPC
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#define SYSV_IPC /* SYSV systems use SYSV IPC by default */
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#endif /* HAVE_SYSVIPC */
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#ifdef BSD
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#define UNIX_DOMAIN_SOCKETS /* BSD systems use Unix Domain sockets by default */
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#endif /* BSD */
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#endif /* No communication method pre-defined */
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#include <sys/types.h>
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#include <sys/param.h>
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#include <sys/stat.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <signal.h>
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#include <errno.h>
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#ifdef HAVE_UNISTD_H
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#include <unistd.h>
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#endif
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#ifdef HAVE_SYS_TIME_H
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#include <sys/time.h>
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#endif
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/*
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* If you are using SYSV_IPC, you might want to make the buffer size bigger
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* since it limits the size of requests and responses. Don't make it bigger
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* than your system's max message size though (usually a couple of k) or else
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* msgsend will start failing. For sockets, using the system BUFSIZ is usually
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* what you want.
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*/
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# define GSERV_BUFSZ BUFSIZ
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#ifdef SYSV_IPC
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#include <sys/ipc.h>
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#include <sys/msg.h>
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#define send_string(s,str) \
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if (strlen(msgp->mtext) + strlen(str) < GSERV_BUFSZ) \
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strcat(msgp->mtext,str); \
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else \
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{ \
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fprintf(stderr,"%s: not enough message buffer space\n",progname); \
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exit(1); \
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} \
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#endif /* SYSV_IPC */
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#if defined(INTERNET_DOMAIN_SOCKETS) || defined(UNIX_DOMAIN_SOCKETS)
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#include <sys/socket.h>
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#endif /* INTERNET_DOMAIN_SOCKETS || UNIX_DOMAIN_SOCKETS */
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#ifdef INTERNET_DOMAIN_SOCKETS
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#include <netdb.h>
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#include <netinet/in.h>
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#include <arpa/inet.h>
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#define TABLE_SIZE 101 /* The number of entries in the hash table */
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#define HASH(host) host /* Rather simplistic hash function */
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#define DEFAULT_PORT 21490 /* default port number to use is
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* DEFAULT_PORT + uid */
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#endif /* INTERNET_DOMAIN_SOCKETS */
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#ifdef UNIX_DOMAIN_SOCKETS
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#include <sys/un.h>
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#define HIDE_UNIX_SOCKET /* put the unix socket in a protected dir */
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#endif /* UNIX_DOMAIN_SOCKETS */
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/* On some platforms, we need to do the equivalent of "stty litout" to get
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* characters like ^D to pass through to emacs. This problem has only
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* been observed under emacs18; fsf19 and lemacs are probably okay without it.
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*/
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#ifndef DONT_USE_LITOUT
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#if !defined(HAVE_TERMIO) && !defined(HAVE_TERMIOS) && !defined(VMS)
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#if !defined(MSDOS) && !defined(BSD4_1)
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#define USE_LITOUT
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#endif
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#endif
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#endif
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#define HOSTNAMSZ 255 /* max size of a hostname */
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#define REPLYSIZ 300 /* max size of reply from server to client */
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#undef FALSE
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#define FALSE 0
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#undef TRUE
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#define TRUE 1
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extern char *optarg;
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extern int optind;
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extern char *progname;
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/* The casts shut Sun's compiler up and are safe in the context these
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are actually used. */
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#define max2(x,y) (((int) (x) > (int) (y)) ? (x) : (y))
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#define min2(x,y) (((int) (x) < (int) (y)) ? (x) : (y))
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#ifndef _NFILE /* rough guess at maximum number of open files */
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#define _NFILE 20
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#endif
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#define EOT_STR "\004"
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#define EOT_CHR '\004'
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/* connection types */
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#define CONN_UNIX 0
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#define CONN_INTERNET 1
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#define CONN_IPC 2
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/* function declarations */
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int make_connection (char *hostarg, int portarg, int *s);
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#ifdef SYSV_IPC
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void disconnect_from_ipc_server();
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#endif
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#if defined(INTERNET_DOMAIN_SOCKETS) || defined(UNIX_DOMAIN_SOCKETS)
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void send_string (int s, CONST char *msg);
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void disconnect_from_server (int s, int echo);
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int read_line (int s, char *dest);
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#endif
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#ifdef INTERNET_DOMAIN_SOCKETS
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int internet_addr (char *host);
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#endif
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