File: gnuserv.h

package info (click to toggle)
xemacs21 21.4.24-8
  • links: PTS
  • area: main
  • in suites: bullseye, buster, sid
  • size: 33,604 kB
  • sloc: ansic: 243,821; lisp: 94,071; cpp: 5,726; sh: 4,406; perl: 1,096; cs: 775; makefile: 761; python: 279; asm: 248; lex: 119; yacc: 95; sed: 22; csh: 9
file content (221 lines) | stat: -rw-r--r-- 6,057 bytes parent folder | download | duplicates (9)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
/* -*-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)
 */

#define GNUSERV_VERSION "3.12"

/* Note: this setting can cause client-server connection failure if the
 * value of TMPDIR is not shared by client and server at run-time.
 */
#define USE_TMPDIR

#define PATCHLEVEL 2

#define NO_SHORTNAMES
/* gnuserv should not be compiled using SOCKS */
#define DO_NOT_SOCKSIFY
#define DONT_ENCAPSULATE
#include <config.h>
#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
#ifdef HAVE_SYS_UN_H
#define UNIX_DOMAIN_SOCKETS 
/* #define SYSV_IPC  */
#endif

/*
 * 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.
 */

#if defined (HAVE_XAUTH)
#define AUTH_MAGIC_COOKIE
#endif /* HAVE_XAUTH */

/*
 * 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>
#include <stdlib.h>
#include <string.h>
#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(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 *optarg;
extern int optind;
extern char *progname;
extern char *tmpdir;

/* The casts shut Sun's compiler up and are safe in the context these
   are actually used. */
#define max2(x,y) (((int) (x) > (int) (y)) ? (x) : (y))
#define min2(x,y) (((int) (x) < (int) (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 */
int make_connection (char *hostarg, int portarg, int *s);
#ifdef SYSV_IPC
void disconnect_from_ipc_server();
#endif
#if defined(INTERNET_DOMAIN_SOCKETS) || defined(UNIX_DOMAIN_SOCKETS)
void send_string (int s, const char *msg);
void disconnect_from_server (int s, int echo);
int read_line (int s, char *dest);
#endif
#ifdef INTERNET_DOMAIN_SOCKETS
int internet_addr (char *host);
#endif