mirror of
https://git.savannah.gnu.org/git/emacs.git
synced 2024-12-14 09:39:42 +00:00
287 lines
6.3 KiB
C
287 lines
6.3 KiB
C
/* Client process that communicates with GNU Emacs acting as server.
|
|
Copyright (C) 1986, 1987 Free Software Foundation, Inc.
|
|
|
|
This file is part of GNU Emacs.
|
|
|
|
GNU Emacs is free software; you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation; either version 1, or (at your option)
|
|
any later version.
|
|
|
|
GNU Emacs is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with GNU Emacs; see the file COPYING. If not, write to
|
|
the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
|
|
|
|
|
|
#define NO_SHORTNAMES
|
|
#include "../src/config.h"
|
|
#undef read
|
|
#undef write
|
|
#undef open
|
|
#ifdef close
|
|
#undef close
|
|
#endif
|
|
|
|
|
|
#if !defined(HAVE_SOCKETS) && !defined(HAVE_SYSVIPC)
|
|
#include <stdio.h>
|
|
|
|
main (argc, argv)
|
|
int argc;
|
|
char **argv;
|
|
{
|
|
fprintf (stderr, "%s: Sorry, the Emacs server is supported only\n",
|
|
argv[0]);
|
|
fprintf (stderr, "on systems with Berkeley sockets or System V IPC.\n");
|
|
exit (1);
|
|
}
|
|
|
|
#else /* HAVE_SOCKETS or HAVE_SYSVIPC */
|
|
|
|
#if ! defined (HAVE_SYSVIPC)
|
|
/* BSD code is very different from SYSV IPC code */
|
|
|
|
#include <sys/types.h>
|
|
#include <sys/socket.h>
|
|
#include <sys/un.h>
|
|
#include <sys/stat.h>
|
|
#include <stdio.h>
|
|
#include <errno.h>
|
|
|
|
extern int sys_nerr;
|
|
extern char *sys_errlist[];
|
|
extern int errno;
|
|
|
|
main (argc, argv)
|
|
int argc;
|
|
char **argv;
|
|
{
|
|
char system_name[32];
|
|
int s, i;
|
|
FILE *out;
|
|
struct sockaddr_un server;
|
|
char *homedir, *cwd, *str;
|
|
char string[BUFSIZ];
|
|
|
|
char *getenv (), *getwd ();
|
|
int geteuid ();
|
|
|
|
if (argc < 2)
|
|
{
|
|
fprintf (stderr, "Usage: %s [+linenumber] filename\n", argv[0]);
|
|
exit (1);
|
|
}
|
|
|
|
/*
|
|
* Open up an AF_UNIX socket in this person's home directory
|
|
*/
|
|
|
|
if ((s = socket (AF_UNIX, SOCK_STREAM, 0)) < 0)
|
|
{
|
|
fprintf (stderr, "%s: ", argv[0]);
|
|
perror ("socket");
|
|
exit (1);
|
|
}
|
|
server.sun_family = AF_UNIX;
|
|
#ifndef SERVER_HOME_DIR
|
|
{
|
|
struct stat statbfr;
|
|
|
|
gethostname (system_name, sizeof (system_name));
|
|
sprintf (server.sun_path, "/tmp/esrv%d-%s", geteuid (), system_name);
|
|
|
|
if (stat (server.sun_path, &statbfr) == -1)
|
|
{
|
|
if (errno == ENOENT)
|
|
fprintf (stderr,
|
|
"Can't find socket; have you started the server?\n");
|
|
else
|
|
perror ("stat");
|
|
exit (1);
|
|
}
|
|
if (statbfr.st_uid != geteuid())
|
|
{
|
|
fprintf (stderr, "Illegal socket owner\n");
|
|
exit (1);
|
|
}
|
|
}
|
|
#else
|
|
if ((homedir = getenv ("HOME")) == NULL)
|
|
{
|
|
fprintf (stderr, "%s: No home directory\n", argv[0]);
|
|
exit (1);
|
|
}
|
|
strcpy (server.sun_path, homedir);
|
|
strcat (server.sun_path, "/.emacs_server");
|
|
#endif
|
|
|
|
if (connect (s, &server, strlen (server.sun_path) + 2) < 0)
|
|
{
|
|
fprintf (stderr, "%s: ", argv[0]);
|
|
perror ("connect");
|
|
exit (1);
|
|
}
|
|
if ((out = fdopen (s, "r+")) == NULL)
|
|
{
|
|
fprintf (stderr, "%s: ", argv[0]);
|
|
perror ("fdopen");
|
|
exit (1);
|
|
}
|
|
|
|
cwd = getwd (string);
|
|
if (cwd == 0)
|
|
{
|
|
/* getwd puts message in STRING if it fails. */
|
|
fprintf (stderr, "%s: %s (%s)\n", argv[0], string,
|
|
(errno < sys_nerr) ? sys_errlist[errno] : "unknown error");
|
|
exit (1);
|
|
}
|
|
|
|
for (i = 1; i < argc; i++)
|
|
{
|
|
if (*argv[i] == '+')
|
|
{
|
|
char *p = argv[i] + 1;
|
|
while (*p >= '0' && *p <= '9') p++;
|
|
if (*p != 0)
|
|
fprintf (out, "%s/", cwd);
|
|
}
|
|
else if (*argv[i] != '/')
|
|
fprintf (out, "%s/", cwd);
|
|
fprintf (out, "%s ", argv[i]);
|
|
}
|
|
fprintf (out, "\n");
|
|
fflush (out);
|
|
|
|
printf ("Waiting for Emacs...");
|
|
fflush (stdout);
|
|
|
|
rewind (out); /* re-read the output */
|
|
str = fgets (string, BUFSIZ, out);
|
|
|
|
/* Now, wait for an answer and print any messages. */
|
|
|
|
while (str = fgets (string, BUFSIZ, out))
|
|
printf ("%s", str);
|
|
|
|
exit (0);
|
|
}
|
|
|
|
#else /* This is the SYSV IPC section */
|
|
|
|
#include <sys/types.h>
|
|
#include <sys/ipc.h>
|
|
#include <sys/msg.h>
|
|
#include <stdio.h>
|
|
|
|
main (argc, argv)
|
|
int argc;
|
|
char **argv;
|
|
{
|
|
int s;
|
|
key_t key;
|
|
struct msgbuf * msgp =
|
|
(struct msgbuf *) malloc (sizeof *msgp + BUFSIZ);
|
|
struct msqid_ds * msg_st;
|
|
char *homedir, buf[BUFSIZ];
|
|
char gwdirb[BUFSIZ];
|
|
char *cwd;
|
|
char *temp;
|
|
char *getwd (), *getcwd (), *getenv ();
|
|
|
|
if (argc < 2)
|
|
{
|
|
fprintf (stderr, "Usage: %s [+linenumber] filename\n", argv[0]);
|
|
exit (1);
|
|
}
|
|
|
|
/*
|
|
* Create a message queue using ~/.emacs_server as the path for ftok
|
|
*/
|
|
if ((homedir = getenv ("HOME")) == NULL)
|
|
{
|
|
fprintf (stderr, "%s: No home directory\n", argv[0]);
|
|
exit (1);
|
|
}
|
|
strcpy (buf, homedir);
|
|
strcat (buf, "/.emacs_server");
|
|
creat (buf, 0600);
|
|
key = ftok (buf, 1); /* unlikely to be anyone else using it */
|
|
s = msgget (key, 0600 | IPC_CREAT);
|
|
if (s == -1)
|
|
{
|
|
fprintf (stderr, "%s: ", argv[0]);
|
|
perror ("msgget");
|
|
exit (1);
|
|
}
|
|
|
|
/* Determine working dir, so we can prefix it to all the arguments. */
|
|
#ifdef BSD
|
|
temp = getwd (gwdirb);
|
|
#else
|
|
temp = getcwd (gwdirb, sizeof gwdirb);
|
|
#endif
|
|
|
|
cwd = gwdirb;
|
|
if (temp != 0)
|
|
{
|
|
/* On some systems, cwd can look like `@machine/...';
|
|
ignore everything before the first slash in such a case. */
|
|
while (*cwd && *cwd != '/')
|
|
cwd++;
|
|
strcat (cwd, "/");
|
|
}
|
|
else
|
|
{
|
|
fprintf (stderr, cwd);
|
|
exit (1);
|
|
}
|
|
|
|
msgp->mtext[0] = 0;
|
|
argc--; argv++;
|
|
while (argc)
|
|
{
|
|
if (*argv[0] == '+')
|
|
{
|
|
char *p = argv[0] + 1;
|
|
while (*p >= '0' && *p <= '9') p++;
|
|
if (*p != 0)
|
|
strcat (msgp->mtext, cwd);
|
|
}
|
|
else if (*argv[0] != '/')
|
|
strcat (msgp->mtext, cwd);
|
|
|
|
strcat (msgp->mtext, argv[0]);
|
|
strcat (msgp->mtext, " ");
|
|
argv++; argc--;
|
|
}
|
|
strcat (msgp->mtext, "\n");
|
|
msgp->mtype = 1;
|
|
if (msgsnd (s, msgp, strlen (msgp->mtext)+1, 0) < 0)
|
|
{
|
|
fprintf (stderr, "%s: ", argv[0]);
|
|
perror ("msgsnd");
|
|
exit (1);
|
|
}
|
|
/*
|
|
* Now, wait for an answer
|
|
*/
|
|
printf ("Waiting for Emacs...");
|
|
fflush (stdout);
|
|
|
|
msgrcv (s, msgp, BUFSIZ, getpid (), 0); /* wait for anything back */
|
|
strcpy (buf, msgp->mtext);
|
|
|
|
printf ("\n%s\n", buf);
|
|
exit (0);
|
|
}
|
|
|
|
#endif /* HAVE_SYSVIPC */
|
|
|
|
#endif /* HAVE_SOCKETS or HAVE_SYSVIPC */
|