2 Client code to allow local and remote editing of files by XEmacs.
3 Copyright (C) 1989 Free Software Foundation, Inc.
4 Copyright (C) 1995 Sun Microsystems, Inc.
5 Copyright (C) 1997 Free Software Foundation, Inc.
7 This file is part of XEmacs.
9 XEmacs is free software; you can redistribute it and/or modify it
10 under the terms of the GNU General Public License as published by the
11 Free Software Foundation; either version 2, or (at your option) any
14 XEmacs is distributed in the hope that it will be useful, but WITHOUT
15 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
16 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
19 You should have received a copy of the GNU General Public License
20 along with XEmacs; see the file COPYING. If not, write to
21 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
22 Boston, MA 02111-1307, USA.
24 Author: Andy Norman (ange@hplb.hpl.hp.com), based on
25 'etc/emacsclient.c' from the GNU Emacs 18.52 distribution.
27 Please mail bugs and suggestions to the XEmacs maintainer.
30 /* #### This file should be a windows-mode, not console-mode program under
31 Windows. (i.e. its entry point should be WinMain.) gnuattach functionality,
32 to the extent it's used at all, should be retrieved using a script that
33 calls the i.exe wrapper program, to obtain stdio handles.
35 #### For that matter, both the functionality of gnuclient and gnuserv
36 should be merged into XEmacs itself using a -remote arg, just like
37 Netscape and other modern programs.
42 * This file incorporates new features added by Bob Weiner <weiner@mot.com>,
43 * Darrell Kindred <dkindred@cmu.edu> and Arup Mukherjee <arup@cmu.edu>.
44 * GNUATTACH support added by Ben Wing <wing@xemacs.org>.
45 * Please see the note at the end of the README file for details.
47 * (If gnuserv came bundled with your emacs, the README file is probably
48 * ../etc/gnuserv.README relative to the directory containing this file)
52 extern void cygwin_conv_to_posix_path(const char *path, char *posix_path);
57 char gnuserv_version[] = "gnuclient version " GNUSERV_VERSION;
63 #include <sys/types.h>
68 #endif /* HAVE_STRING_H */
72 #endif /* HAVE_UNISTD_H */
76 #if !defined(SYSV_IPC) && !defined(UNIX_DOMAIN_SOCKETS) && \
77 !defined(INTERNET_DOMAIN_SOCKETS)
79 main (int argc, char *argv[])
81 fprintf (stderr, "Sorry, the Emacs server is only "
82 "supported on systems that have\n");
83 fprintf (stderr, "Unix Domain sockets, Internet Domain "
84 "sockets or System V IPC.\n");
87 #else /* SYSV_IPC || UNIX_DOMAIN_SOCKETS || INTERNET_DOMAIN_SOCKETS */
89 static char cwd[MAXPATHLEN+2]; /* current working directory when calculated */
90 static char *cp = NULL; /* ptr into valid bit of cwd above */
92 static pid_t emacs_pid; /* Process id for emacs process */
94 void initialize_signals (void);
97 tell_emacs_to_resume (int sig)
99 char buffer[GSERV_BUFSZ+1];
100 int s; /* socket / msqid to server */
101 int connect_type; /* CONN_UNIX, CONN_INTERNET, or
104 /* Why is SYSV so retarded? */
105 /* We want emacs to realize that we are resuming */
107 signal(SIGCONT, tell_emacs_to_resume);
110 connect_type = make_connection (NULL, 0, &s);
112 sprintf(buffer,"(gnuserv-eval '(resume-pid-console %d))", (int)getpid());
113 send_string(s, buffer);
116 if (connect_type == (int) CONN_IPC)
117 disconnect_from_ipc_server (s, msgp, FALSE);
118 #else /* !SYSV_IPC */
119 if (connect_type != (int) CONN_IPC)
120 disconnect_from_server (s, FALSE);
121 #endif /* !SYSV_IPC */
125 pass_signal_to_emacs (int sig)
127 if (kill (emacs_pid, sig) == -1)
129 fprintf (stderr, "gnuattach: Could not pass signal to emacs process\n");
132 initialize_signals ();
136 initialize_signals (void)
138 /* Set up signal handler to pass relevant signals to emacs process.
139 We used to send SIGSEGV, SIGBUS, SIGPIPE, SIGILL and others to
140 Emacs, but I think it's better not to. I can see no reason why
141 Emacs should SIGSEGV whenever gnuclient SIGSEGV-s, etc. */
142 signal (SIGQUIT, pass_signal_to_emacs);
143 signal (SIGINT, pass_signal_to_emacs);
145 signal (SIGWINCH, pass_signal_to_emacs);
149 /* We want emacs to realize that we are resuming */
150 signal (SIGCONT, tell_emacs_to_resume);
156 get_current_working_directory -- return the cwd.
159 get_current_working_directory (void)
162 { /* haven't calculated it yet */
164 if (getcwd (cwd,MAXPATHLEN) == NULL)
166 if (getwd (cwd) == 0)
167 #endif /* HAVE_GETCWD */
170 fprintf (stderr, "%s: unable to get current working directory\n",
175 /* on some systems, cwd can look like '@machine/' ... */
176 /* ignore everything before the first '/' */
177 for (cp = cwd; *cp && *cp != '/'; ++cp)
184 } /* get_current_working_directory */
188 filename_expand -- try to convert the given filename into a fully-qualified
192 filename_expand (char *fullpath, char *filename)
193 /* fullpath - returned full pathname */
194 /* filename - filename to expand */
197 char cygwinFilename[MAXPATHLEN+1];
201 fullpath[0] = fullpath[MAXPATHLEN] = '\0';
205 If we're in cygwin, just convert it and let the unix stuff handle it.
207 cygwin_conv_to_posix_path(filename, cygwinFilename);
208 filename = cygwinFilename;
211 if (filename[0] && filename[0] == '/')
213 /* Absolute (unix-style) pathname. Do nothing */
214 strncat (fullpath, filename, MAXPATHLEN);
218 /* Assume relative Unix style path. Get the current directory
219 and prepend it. FIXME: need to fix the case of DOS paths like
220 "\foo", where we need to get the current drive. */
222 strncat (fullpath, get_current_working_directory (), MAXPATHLEN);
223 len = strlen (fullpath);
225 /* If no trailing slash, add one */
226 if (len <= 0 || (fullpath[len - 1] != '/' && len < MAXPATHLEN))
228 strcat (fullpath, "/");
232 /* Don't forget to add the filename! */
233 strncat (fullpath, filename, MAXPATHLEN - len);
235 } /* filename_expand */
237 /* Encase the string in quotes, escape all the backslashes and quotes
240 clean_string (const char *s)
247 for (const_p = s; *const_p; const_p++, i++)
249 if (*const_p == '\\' || *const_p == '\"')
251 else if (*const_p == '\004')
256 p = res = (char *) malloc (i + 2 + 1);
285 #define GET_ARGUMENT(var, desc) do { \
286 if (*(p + 1)) (var) = p + 1; \
291 fprintf (stderr, "%s: `%s' must be followed by an argument\n", \
300 /* A strdup imitation. */
302 my_strdup (const char *s)
304 char *new_s = (char *) malloc (strlen (s) + 1);
311 main (int argc, char *argv[])
313 int starting_line = 1; /* line to start editing at */
314 char command[MAXPATHLEN+50]; /* emacs command buffer */
315 char fullpath[MAXPATHLEN+1]; /* full pathname to file */
316 char *eval_form = NULL; /* form to evaluate with `-eval' */
317 char *eval_function = NULL; /* function to evaluate with `-f' */
318 char *load_library = NULL; /* library to load */
319 int quick = 0; /* quick edit, don't wait for user to
321 int batch = 0; /* batch mode */
322 int view = 0; /* view only. */
324 int errflg = 0; /* option error */
325 int s; /* socket / msqid to server */
326 int connect_type; /* CONN_UNIX, CONN_INTERNET, or
328 int suppress_windows_system = 0;
329 char *display = NULL;
330 #ifdef INTERNET_DOMAIN_SOCKETS
331 char *hostarg = NULL; /* remote hostname */
333 char thishost[HOSTNAMSZ]; /* this hostname */
334 char remotepath[MAXPATHLEN+1]; /* remote pathname */
335 int rflg = 0; /* pathname given on cmdline */
337 unsigned short port = 0; /* port to server */
338 #endif /* INTERNET_DOMAIN_SOCKETS */
339 char *path; /* used indiscriminately */
341 struct msgbuf *msgp; /* message */
342 #endif /* SYSV_IPC */
344 char buffer[GSERV_BUFSZ + 1]; /* buffer to read pid */
345 char result[GSERV_BUFSZ + 1];
348 #ifdef INTERNET_DOMAIN_SOCKETS
349 memset (remotepath, 0, sizeof (remotepath));
350 #endif /* INTERNET_DOMAIN_SOCKETS */
352 progname = strrchr (argv[0], '/');
359 tmpdir = getenv ("TMPDIR");
364 display = getenv ("DISPLAY");
366 display = my_strdup (display);
367 #ifndef HAVE_MS_WINDOWS
369 suppress_windows_system = 1;
372 for (i = 1; argv[i] && !errflg; i++)
376 else if (*argv[i] == '-'
377 && (*(argv[i] + 1) == '\0'
378 || (*(argv[i] + 1) == '-' && *(argv[i] + 2) == '\0')))
385 if (!strcmp (argv[i], "-batch") || !strcmp (argv[i], "--batch"))
387 else if (!strcmp (argv[i], "-eval") || !strcmp (argv[i], "--eval"))
391 fprintf (stderr, "%s: `-eval' must be followed by an argument\n",
397 else if (!strcmp (argv[i], "-display") || !strcmp (argv[i], "--display"))
399 suppress_windows_system = 0;
403 "%s: `-display' must be followed by an argument\n",
409 /* no need to strdup. */
412 else if (!strcmp (argv[i], "-nw"))
413 suppress_windows_system = 1;
416 /* Iterate over one-letter options. */
419 for (p = argv[i] + 1; *p && !over; p++)
430 GET_ARGUMENT (eval_function, "-f");
433 GET_ARGUMENT (load_library, "-l");
435 #ifdef INTERNET_DOMAIN_SOCKETS
437 GET_ARGUMENT (hostarg, "-h");
440 GET_ARGUMENT (portarg, "-p");
441 port = atoi (portarg);
444 GET_ARGUMENT (remotearg, "-r");
445 strncpy (remotepath, remotearg, MAXPATHLEN);
448 #endif /* INTERNET_DOMAIN_SOCKETS */
459 #ifdef INTERNET_DOMAIN_SOCKETS
460 "Usage: %s [-nw] [-display display] [-q] [-v] [-l library]\n"
461 " [-batch] [-f function] [-eval form]\n"
462 " [-h host] [-p port] [-r remote-path] [[+line] file] ...\n",
463 #else /* !INTERNET_DOMAIN_SOCKETS */
464 "Usage: %s [-nw] [-q] [-v] [-l library] [-f function] [-eval form] "
465 "[[+line] path] ...\n",
466 #endif /* !INTERNET_DOMAIN_SOCKETS */
470 if (batch && argv[i])
472 fprintf (stderr, "%s: Cannot specify `-batch' with file names\n",
476 #if defined(INTERNET_DOMAIN_SOCKETS)
477 if (suppress_windows_system && hostarg)
479 fprintf (stderr, "%s: Remote editing is available only on X\n",
485 if (eval_function || eval_form || load_library)
487 #if defined(INTERNET_DOMAIN_SOCKETS)
488 connect_type = make_connection (hostarg, port, &s);
490 connect_type = make_connection (NULL, 0, &s);
492 sprintf (command, "(gnuserv-eval%s '(progn ", quick ? "-quickly" : "");
493 send_string (s, command);
496 send_string (s , "(load-library ");
497 send_string (s, clean_string(load_library));
498 send_string (s, ") ");
502 send_string (s, eval_form);
506 send_string (s, "(");
507 send_string (s, eval_function);
508 send_string (s, ")");
510 send_string (s, "))");
511 /* disconnect already sends EOT_STR */
513 if (connect_type == (int) CONN_IPC)
514 disconnect_from_ipc_server (s, msgp, batch && !quick);
515 #else /* !SYSV_IPC */
516 if (connect_type != (int) CONN_IPC)
517 disconnect_from_server (s, batch && !quick);
518 #endif /* !SYSV_IPC */
519 } /* eval_function || eval_form || load_library */
522 /* no sexp on the command line, so read it from stdin */
525 #if defined(INTERNET_DOMAIN_SOCKETS)
526 connect_type = make_connection (hostarg, port, &s);
528 connect_type = make_connection (NULL, 0, &s);
530 sprintf (command, "(gnuserv-eval%s '(progn ", quick ? "-quickly" : "");
531 send_string (s, command);
533 while ((nb = read(fileno(stdin), buffer, GSERV_BUFSZ-1)) > 0)
536 send_string(s, buffer);
539 /* disconnect already sends EOT_STR */
541 if (connect_type == (int) CONN_IPC)
542 disconnect_from_ipc_server (s, msgp, batch && !quick);
543 #else /* !SYSV_IPC */
544 if (connect_type != (int) CONN_IPC)
545 disconnect_from_server (s, batch && !quick);
546 #endif /* !SYSV_IPC */
551 if (suppress_windows_system)
556 fprintf (stderr, "%s: Not connected to a tty", progname);
559 #if defined(INTERNET_DOMAIN_SOCKETS)
560 connect_type = make_connection (hostarg, port, &s);
562 connect_type = make_connection (NULL, 0, &s);
564 send_string (s, "(gnuserv-eval '(emacs-pid))");
565 send_string (s, EOT_STR);
567 if (read_line (s, buffer) == 0)
569 fprintf (stderr, "%s: Could not establish Emacs process id\n",
573 /* Don't do disconnect_from_server because we have already read
574 data, and disconnect doesn't do anything else. */
576 if (connect_type == (int) CONN_IPC)
577 disconnect_from_ipc_server (s, msgp, FALSE);
578 #endif /* !SYSV_IPC */
580 emacs_pid = (pid_t)atol(buffer);
581 initialize_signals();
582 } /* suppress_windows_system */
584 #if defined(INTERNET_DOMAIN_SOCKETS)
585 connect_type = make_connection (hostarg, port, &s);
587 connect_type = make_connection (NULL, 0, &s);
590 #ifdef INTERNET_DOMAIN_SOCKETS
591 if (connect_type == (int) CONN_INTERNET)
594 gethostname (thishost, HOSTNAMSZ);
596 { /* attempt to generate a path
598 if ((ptr = getenv ("GNU_NODE")) != NULL)
599 /* user specified a path */
600 strncpy (remotepath, ptr, MAXPATHLEN);
602 #if 0 /* This is really bogus... re-enable it if you must have it! */
603 #if defined (hp9000s300) || defined (hp9000s800)
604 else if (strcmp (thishost,hostarg))
605 { /* try /net/thishost */
606 strcpy (remotepath, "/net/"); /* (this fails using internet
608 strcat (remotepath, thishost);
614 { /* same machines, no need for path */
615 remotepath[0] = '\0'; /* default is the empty path */
617 #endif /* INTERNET_DOMAIN_SOCKETS */
620 if ((msgp = (struct msgbuf *)
621 malloc (sizeof *msgp + GSERV_BUFSZ)) == NULL)
623 fprintf (stderr, "%s: not enough memory for message buffer\n", progname);
627 msgp->mtext[0] = '\0'; /* ready for later strcats */
628 #endif /* SYSV_IPC */
630 if (suppress_windows_system)
632 char *term = getenv ("TERM");
635 fprintf (stderr, "%s: unknown terminal type\n", progname);
638 sprintf (command, "(gnuserv-edit-files '(tty %s %s %d) '(",
639 clean_string (tty), clean_string (term), (int)getpid ());
641 else /* !suppress_windows_system */
645 #ifdef HAVE_X_WINDOWS
647 sprintf (command, "(gnuserv-edit-files '(x %s) '(",
648 clean_string (display));
652 strcpy (command, "(gnuserv-edit-files '(gtk nil) '(");
654 #ifdef HAVE_MS_WINDOWS
656 sprintf (command, "(gnuserv-edit-files '(mswindows nil) '(");
658 } /* !suppress_windows_system */
659 send_string (s, command);
666 if (i < argc - 1 && *argv[i] == '+')
667 starting_line = atoi (argv[i++]);
670 /* If the last argument is +something, treat it as a file. */
676 filename_expand (fullpath, argv[i]);
677 #ifdef INTERNET_DOMAIN_SOCKETS
678 path = (char *) malloc (strlen (remotepath) + strlen (fullpath) + 1);
679 sprintf (path, "%s%s", remotepath, fullpath);
681 path = my_strdup (fullpath);
683 sprintf (command, "(%d . %s)", starting_line, clean_string (path));
684 send_string (s, command);
688 sprintf (command, ")%s%s",
689 (quick || (nofiles && !suppress_windows_system)) ? " 'quick" : "",
690 view ? " 'view" : "");
691 send_string (s, command);
692 send_string (s, ")");
695 if (connect_type == (int) CONN_IPC)
696 disconnect_from_ipc_server (s, msgp, FALSE);
697 #else /* !SYSV_IPC */
698 if (connect_type != (int) CONN_IPC)
699 disconnect_from_server (s, FALSE);
700 #endif /* !SYSV_IPC */
708 #endif /* SYSV_IPC || UNIX_DOMAIN_SOCKETS || INTERNET_DOMAIN_SOCKETS */