Commit | Line | Data |
---|---|---|
efb859b4 | 1 | /* Client process that communicates with GNU Emacs acting as server. |
5c9659d3 | 2 | Copyright (C) 1986, 1987, 1994, 1999, 2000, 2001, 2003, 2004 |
de073ce3 | 3 | Free Software Foundation, Inc. |
46cec291 RS |
4 | |
5 | This file is part of GNU Emacs. | |
6 | ||
7 | GNU Emacs is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
92af894f | 9 | the Free Software Foundation; either version 2, or (at your option) |
46cec291 RS |
10 | any later version. |
11 | ||
12 | GNU Emacs is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with GNU Emacs; see the file COPYING. If not, write to | |
3b7ad313 EN |
19 | the Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
20 | Boston, MA 02111-1307, USA. */ | |
46cec291 RS |
21 | |
22 | ||
23 | #define NO_SHORTNAMES | |
e69233c2 PJ |
24 | |
25 | #ifdef HAVE_CONFIG_H | |
2f8fe2f4 | 26 | #include <config.h> |
e69233c2 PJ |
27 | #endif |
28 | ||
4e23f2ba | 29 | #undef signal |
46cec291 | 30 | |
e69233c2 | 31 | #include <ctype.h> |
8f9aaa0a RS |
32 | #include <stdio.h> |
33 | #include <getopt.h> | |
79f13bba DL |
34 | #ifdef HAVE_UNISTD_H |
35 | #include <unistd.h> | |
36 | #endif | |
8f9aaa0a | 37 | |
9f637eea GM |
38 | #ifdef VMS |
39 | # include "vms-pwd.h" | |
40 | #else | |
41 | # include <pwd.h> | |
42 | #endif /* not VMS */ | |
43 | ||
9628b887 | 44 | #include <signal.h> |
4d553a13 | 45 | #include <errno.h> |
9628b887 KL |
46 | |
47 | \f | |
8f9aaa0a RS |
48 | char *getenv (), *getwd (); |
49 | char *getcwd (); | |
8f9aaa0a RS |
50 | |
51 | /* This is defined with -D from the compilation command, | |
52 | which extracts it from ../lisp/version.el. */ | |
53 | ||
54 | #ifndef VERSION | |
55 | #define VERSION "unspecified" | |
56 | #endif | |
57 | \f | |
58 | /* Name used to invoke this program. */ | |
59 | char *progname; | |
60 | ||
0a125897 KL |
61 | /* The first argument to main. */ |
62 | int main_argc; | |
63 | ||
64 | /* The second argument to main. */ | |
65 | char **main_argv; | |
66 | ||
749ae770 | 67 | /* Nonzero means don't wait for a response from Emacs. --no-wait. */ |
8f9aaa0a RS |
68 | int nowait = 0; |
69 | ||
30be2360 SM |
70 | /* Nonzero means args are expressions to be evaluated. --eval. */ |
71 | int eval = 0; | |
72 | ||
73 | /* The display on which Emacs should work. --display. */ | |
74 | char *display = NULL; | |
75 | ||
9628b887 | 76 | /* Nonzero means open a new Emacs frame on the current terminal. */ |
16c290d8 | 77 | int frame = 0; |
9628b887 | 78 | |
30be2360 SM |
79 | /* If non-NULL, the name of an editor to fallback to if the server |
80 | is not running. --alternate-editor. */ | |
81 | const char * alternate_editor = NULL; | |
82 | ||
3db926be | 83 | /* If non-NULL, the filename of the UNIX socket. */ |
254107e4 RS |
84 | char *socket_name = NULL; |
85 | ||
7f3bff3e AS |
86 | void print_help_and_exit (); |
87 | ||
8f9aaa0a RS |
88 | struct option longopts[] = |
89 | { | |
749ae770 | 90 | { "no-wait", no_argument, NULL, 'n' }, |
30be2360 | 91 | { "eval", no_argument, NULL, 'e' }, |
8f9aaa0a RS |
92 | { "help", no_argument, NULL, 'H' }, |
93 | { "version", no_argument, NULL, 'V' }, | |
b28c910d | 94 | { "tty", no_argument, NULL, 't' }, |
3cf8c6aa | 95 | { "alternate-editor", required_argument, NULL, 'a' }, |
254107e4 | 96 | { "socket-name", required_argument, NULL, 's' }, |
30be2360 SM |
97 | { "display", required_argument, NULL, 'd' }, |
98 | { 0, 0, 0, 0 } | |
8f9aaa0a RS |
99 | }; |
100 | ||
101 | /* Decode the options from argv and argc. | |
5212210c | 102 | The global variable `optind' will say how many arguments we used up. */ |
8f9aaa0a | 103 | |
5212210c | 104 | void |
8f9aaa0a RS |
105 | decode_options (argc, argv) |
106 | int argc; | |
107 | char **argv; | |
108 | { | |
109 | while (1) | |
110 | { | |
111 | int opt = getopt_long (argc, argv, | |
819b8f00 | 112 | "VHnea:s:d:t", longopts, 0); |
8f9aaa0a RS |
113 | |
114 | if (opt == EOF) | |
115 | break; | |
116 | ||
97e3214d | 117 | alternate_editor = getenv ("ALTERNATE_EDITOR"); |
e69233c2 | 118 | |
8f9aaa0a RS |
119 | switch (opt) |
120 | { | |
121 | case 0: | |
122 | /* If getopt returns 0, then it has already processed a | |
123 | long-named option. We should do nothing. */ | |
124 | break; | |
e69233c2 | 125 | |
97e3214d GM |
126 | case 'a': |
127 | alternate_editor = optarg; | |
128 | break; | |
e69233c2 | 129 | |
254107e4 RS |
130 | case 's': |
131 | socket_name = optarg; | |
132 | break; | |
133 | ||
30be2360 SM |
134 | case 'd': |
135 | display = optarg; | |
136 | break; | |
137 | ||
8f9aaa0a RS |
138 | case 'n': |
139 | nowait = 1; | |
140 | break; | |
141 | ||
30be2360 SM |
142 | case 'e': |
143 | eval = 1; | |
144 | break; | |
145 | ||
8f9aaa0a | 146 | case 'V': |
20c396e8 JB |
147 | printf ("emacsclient %s\n", VERSION); |
148 | exit (0); | |
8f9aaa0a | 149 | break; |
46cec291 | 150 | |
819b8f00 | 151 | case 't': |
16c290d8 | 152 | frame = 1; |
9628b887 KL |
153 | break; |
154 | ||
8f9aaa0a | 155 | case 'H': |
8f9aaa0a | 156 | print_help_and_exit (); |
20c396e8 JB |
157 | break; |
158 | ||
159 | default: | |
160 | fprintf (stderr, "Try `%s --help' for more information\n", progname); | |
161 | exit (1); | |
162 | break; | |
8f9aaa0a RS |
163 | } |
164 | } | |
9628b887 | 165 | |
16c290d8 | 166 | if (frame) { |
9628b887 KL |
167 | nowait = 0; |
168 | display = 0; | |
169 | } | |
170 | ||
8f9aaa0a RS |
171 | } |
172 | ||
7f3bff3e | 173 | void |
8f9aaa0a RS |
174 | print_help_and_exit () |
175 | { | |
20c396e8 JB |
176 | printf ( |
177 | "Usage: %s [OPTIONS] FILE...\n\ | |
30be2360 SM |
178 | Tell the Emacs server to visit the specified files.\n\ |
179 | Every FILE can be either just a FILENAME or [+LINE[:COLUMN]] FILENAME.\n\ | |
20c396e8 | 180 | \n\ |
30be2360 SM |
181 | The following OPTIONS are accepted:\n\ |
182 | -V, --version Just print a version info and return\n\ | |
183 | -H, --help Print this usage information message\n\ | |
819b8f00 | 184 | -t, --tty Open a new Emacs frame on the current terminal\n\ |
30be2360 SM |
185 | -n, --no-wait Don't wait for the server to return\n\ |
186 | -e, --eval Evaluate the FILE arguments as ELisp expressions\n\ | |
187 | -d, --display=DISPLAY Visit the file in the given display\n\ | |
254107e4 RS |
188 | -s, --socket-name=FILENAME\n\ |
189 | Set the filename of the UNIX socket for communication\n\ | |
30be2360 SM |
190 | -a, --alternate-editor=EDITOR\n\ |
191 | Editor to fallback to if the server is not running\n\ | |
20c396e8 | 192 | \n\ |
30be2360 | 193 | Report bugs to bug-gnu-emacs@gnu.org.\n", progname); |
20c396e8 | 194 | exit (0); |
8f9aaa0a | 195 | } |
5212210c | 196 | |
a4cf2096 RS |
197 | /* In NAME, insert a & before each &, each space, each newline, and |
198 | any initial -. Change spaces to underscores, too, so that the | |
5212210c RS |
199 | return value never contains a space. */ |
200 | ||
87209357 EZ |
201 | void |
202 | quote_file_name (name, stream) | |
5212210c | 203 | char *name; |
87209357 | 204 | FILE *stream; |
5212210c RS |
205 | { |
206 | char *copy = (char *) malloc (strlen (name) * 2 + 1); | |
207 | char *p, *q; | |
208 | ||
209 | p = name; | |
210 | q = copy; | |
211 | while (*p) | |
212 | { | |
213 | if (*p == ' ') | |
214 | { | |
f1db6a73 | 215 | *q++ = '&'; |
5212210c RS |
216 | *q++ = '_'; |
217 | p++; | |
218 | } | |
3cf8c6aa SM |
219 | else if (*p == '\n') |
220 | { | |
221 | *q++ = '&'; | |
222 | *q++ = 'n'; | |
223 | p++; | |
224 | } | |
5212210c RS |
225 | else |
226 | { | |
f1db6a73 RS |
227 | if (*p == '&' || (*p == '-' && p == name)) |
228 | *q++ = '&'; | |
5212210c RS |
229 | *q++ = *p++; |
230 | } | |
231 | } | |
f1db6a73 | 232 | *q++ = 0; |
5212210c | 233 | |
87209357 EZ |
234 | fprintf (stream, copy); |
235 | ||
236 | free (copy); | |
5212210c | 237 | } |
0c76956f | 238 | |
0c76956f RS |
239 | /* Like malloc but get fatal error if memory is exhausted. */ |
240 | ||
5497dfdb | 241 | long * |
0c76956f RS |
242 | xmalloc (size) |
243 | unsigned int size; | |
244 | { | |
5f32a712 | 245 | long *result = (long *) malloc (size); |
0c76956f RS |
246 | if (result == NULL) |
247 | { | |
248 | perror ("malloc"); | |
249 | exit (1); | |
250 | } | |
251 | return result; | |
252 | } | |
8f9aaa0a | 253 | \f |
97e3214d GM |
254 | /* |
255 | Try to run a different command, or --if no alternate editor is | |
256 | defined-- exit with an errorcode. | |
257 | */ | |
de073ce3 | 258 | void |
819b8f00 | 259 | fail (void) |
97e3214d GM |
260 | { |
261 | if (alternate_editor) | |
262 | { | |
3cf8c6aa | 263 | int i = optind - 1; |
0a125897 | 264 | execvp (alternate_editor, main_argv + i); |
23431241 | 265 | return; |
97e3214d GM |
266 | } |
267 | else | |
268 | { | |
269 | exit (1); | |
270 | } | |
271 | } | |
272 | ||
6548cf00 | 273 | int emacs_pid; |
9628b887 | 274 | |
4d553a13 KL |
275 | #ifdef nec_ews_svr4 |
276 | extern char *_sobuf ; | |
9628b887 | 277 | #else |
4d553a13 KL |
278 | #if defined (USG) || defined (DGUX) |
279 | unsigned char _sobuf[BUFSIZ+8]; | |
9628b887 | 280 | #else |
4d553a13 KL |
281 | char _sobuf[BUFSIZ]; |
282 | #endif | |
9628b887 | 283 | #endif |
9628b887 KL |
284 | |
285 | SIGTYPE | |
428a555e | 286 | pass_signal_to_emacs (int signalnum) |
9628b887 KL |
287 | { |
288 | int old_errno = errno; | |
289 | ||
9f729af5 | 290 | if (emacs_pid) |
428a555e | 291 | kill (emacs_pid, signalnum); |
9f729af5 | 292 | |
428a555e | 293 | signal (signalnum, pass_signal_to_emacs); |
9f729af5 KL |
294 | errno = old_errno; |
295 | } | |
296 | ||
4d553a13 KL |
297 | void |
298 | init_signals (void) | |
9628b887 KL |
299 | { |
300 | /* Set up signal handlers. */ | |
428a555e | 301 | signal (SIGWINCH, pass_signal_to_emacs); |
4ca927b4 KL |
302 | |
303 | /* Don't pass SIGINT and SIGQUIT to Emacs, because it has no way of | |
304 | deciding which terminal the signal came from. C-g is now a | |
305 | normal input event on secondary terminals. */ | |
306 | #if 0 | |
428a555e KL |
307 | signal (SIGINT, pass_signal_to_emacs); |
308 | signal (SIGQUIT, pass_signal_to_emacs); | |
4ca927b4 | 309 | #endif |
9628b887 KL |
310 | } |
311 | ||
97e3214d | 312 | \f |
30be2360 | 313 | #if !defined (HAVE_SOCKETS) || defined (NO_SOCKETS_IN_FILE_SYSTEM) |
46cec291 | 314 | |
de073ce3 | 315 | int |
46cec291 RS |
316 | main (argc, argv) |
317 | int argc; | |
318 | char **argv; | |
319 | { | |
320 | fprintf (stderr, "%s: Sorry, the Emacs server is supported only\n", | |
321 | argv[0]); | |
30be2360 | 322 | fprintf (stderr, "on systems with Berkeley sockets.\n"); |
97e3214d | 323 | |
819b8f00 | 324 | fail (); |
46cec291 RS |
325 | } |
326 | ||
30be2360 | 327 | #else /* HAVE_SOCKETS */ |
46cec291 RS |
328 | |
329 | #include <sys/types.h> | |
330 | #include <sys/socket.h> | |
331 | #include <sys/un.h> | |
efb859b4 | 332 | #include <sys/stat.h> |
46cec291 RS |
333 | #include <errno.h> |
334 | ||
92af894f | 335 | extern char *strerror (); |
46cec291 RS |
336 | extern int errno; |
337 | ||
9f637eea GM |
338 | /* Three possibilities: |
339 | 2 - can't be `stat'ed (sets errno) | |
340 | 1 - isn't owned by us | |
341 | 0 - success: none of the above */ | |
342 | ||
343 | static int | |
344 | socket_status (socket_name) | |
345 | char *socket_name; | |
346 | { | |
347 | struct stat statbfr; | |
348 | ||
349 | if (stat (socket_name, &statbfr) == -1) | |
350 | return 2; | |
351 | ||
352 | if (statbfr.st_uid != geteuid ()) | |
353 | return 1; | |
354 | ||
355 | return 0; | |
356 | } | |
357 | ||
4d553a13 KL |
358 | /* Returns 1 if PREFIX is a prefix of STRING. */ |
359 | static int | |
360 | strprefix (char *prefix, char *string) | |
361 | { | |
362 | int i; | |
363 | if (! prefix) | |
364 | return 1; | |
365 | ||
366 | if (!string) | |
367 | return 0; | |
368 | ||
369 | for (i = 0; prefix[i]; i++) | |
370 | if (!string[i] || string[i] != prefix[i]) | |
371 | return 0; | |
372 | return 1; | |
373 | } | |
374 | ||
340ff9de | 375 | int |
46cec291 RS |
376 | main (argc, argv) |
377 | int argc; | |
378 | char **argv; | |
379 | { | |
a2b3f2b5 RS |
380 | char *system_name; |
381 | int system_name_length; | |
3cf8c6aa | 382 | int s, i, needlf = 0; |
23a7488d | 383 | FILE *out, *in; |
46cec291 | 384 | struct sockaddr_un server; |
571512de | 385 | char *cwd, *str; |
46cec291 | 386 | char string[BUFSIZ]; |
8f9aaa0a | 387 | |
0a125897 KL |
388 | main_argc = argc; |
389 | main_argv = argv; | |
8f9aaa0a | 390 | progname = argv[0]; |
46cec291 | 391 | |
8f9aaa0a | 392 | /* Process options. */ |
5212210c | 393 | decode_options (argc, argv); |
46cec291 | 394 | |
16c290d8 | 395 | if ((argc - optind < 1) && !eval && !frame) |
20c396e8 JB |
396 | { |
397 | fprintf (stderr, "%s: file name or argument required\n", progname); | |
398 | fprintf (stderr, "Try `%s --help' for more information\n", progname); | |
399 | exit (1); | |
400 | } | |
46cec291 | 401 | |
e69233c2 | 402 | /* |
46cec291 RS |
403 | * Open up an AF_UNIX socket in this person's home directory |
404 | */ | |
405 | ||
406 | if ((s = socket (AF_UNIX, SOCK_STREAM, 0)) < 0) | |
407 | { | |
408 | fprintf (stderr, "%s: ", argv[0]); | |
409 | perror ("socket"); | |
819b8f00 | 410 | fail (); |
46cec291 | 411 | } |
e69233c2 | 412 | |
46cec291 | 413 | server.sun_family = AF_UNIX; |
c5fee545 | 414 | |
efb859b4 | 415 | { |
3ecdcd59 | 416 | char *dot; |
a2b3f2b5 RS |
417 | system_name_length = 32; |
418 | ||
419 | while (1) | |
420 | { | |
421 | system_name = (char *) xmalloc (system_name_length + 1); | |
422 | ||
423 | /* system_name must be null-terminated string. */ | |
424 | system_name[system_name_length] = '\0'; | |
425 | ||
426 | if (gethostname (system_name, system_name_length) == 0) | |
427 | break; | |
428 | ||
429 | free (system_name); | |
430 | system_name_length *= 2; | |
431 | } | |
3ecdcd59 SM |
432 | |
433 | /* We always use the non-dotted host name, for simplicity. */ | |
434 | dot = index (system_name, '.'); | |
435 | if (dot) | |
436 | *dot = '\0'; | |
c5fee545 KH |
437 | } |
438 | ||
c5fee545 | 439 | { |
9f637eea | 440 | int sock_status = 0; |
5c9659d3 | 441 | int default_sock = !socket_name; |
b80bf66e | 442 | int saved_errno = 0; |
819b8f00 | 443 | |
5c9659d3 | 444 | if (default_sock) |
254107e4 RS |
445 | { |
446 | socket_name = alloca (system_name_length + 100); | |
447 | sprintf (socket_name, "/tmp/emacs%d-%s/server", | |
448 | (int) geteuid (), system_name); | |
449 | } | |
450 | ||
451 | if (strlen (socket_name) < sizeof (server.sun_path)) | |
452 | strcpy (server.sun_path, socket_name); | |
453 | else | |
819b8f00 KL |
454 | { |
455 | fprintf (stderr, "%s: socket-name %s too long", | |
456 | argv[0], socket_name); | |
457 | fail (); | |
458 | } | |
efb859b4 | 459 | |
9f637eea GM |
460 | /* See if the socket exists, and if it's owned by us. */ |
461 | sock_status = socket_status (server.sun_path); | |
152b6e83 | 462 | saved_errno = errno; |
5c9659d3 | 463 | if (sock_status && default_sock) |
efb859b4 | 464 | { |
9f637eea GM |
465 | /* Failing that, see if LOGNAME or USER exist and differ from |
466 | our euid. If so, look for a socket based on the UID | |
467 | associated with the name. This is reminiscent of the logic | |
468 | that init_editfns uses to set the global Vuser_full_name. */ | |
e69233c2 | 469 | |
9f637eea GM |
470 | char *user_name = (char *) getenv ("LOGNAME"); |
471 | if (!user_name) | |
472 | user_name = (char *) getenv ("USER"); | |
e69233c2 | 473 | |
9f637eea GM |
474 | if (user_name) |
475 | { | |
476 | struct passwd *pw = getpwnam (user_name); | |
477 | if (pw && (pw->pw_uid != geteuid ())) | |
478 | { | |
479 | /* We're running under su, apparently. */ | |
5c9659d3 | 480 | sprintf (socket_name, "/tmp/emacs%d-%s/server", |
23431241 | 481 | (int) pw->pw_uid, system_name); |
5c9659d3 SM |
482 | |
483 | if (strlen (socket_name) < sizeof (server.sun_path)) | |
484 | strcpy (server.sun_path, socket_name); | |
485 | else | |
486 | { | |
487 | fprintf (stderr, "%s: socket-name %s too long", | |
488 | argv[0], socket_name); | |
489 | exit (1); | |
490 | } | |
491 | ||
9f637eea | 492 | sock_status = socket_status (server.sun_path); |
b80bf66e | 493 | saved_errno = errno; |
9f637eea GM |
494 | } |
495 | } | |
efb859b4 | 496 | } |
e69233c2 | 497 | |
9f637eea GM |
498 | switch (sock_status) |
499 | { | |
500 | case 1: | |
501 | /* There's a socket, but it isn't owned by us. This is OK if | |
502 | we are root. */ | |
503 | if (0 != geteuid ()) | |
504 | { | |
505 | fprintf (stderr, "%s: Invalid socket owner\n", argv[0]); | |
819b8f00 | 506 | fail (); |
9f637eea GM |
507 | } |
508 | break; | |
e69233c2 | 509 | |
9f637eea GM |
510 | case 2: |
511 | /* `stat' failed */ | |
152b6e83 | 512 | if (saved_errno == ENOENT) |
9f637eea | 513 | fprintf (stderr, |
819b8f00 | 514 | "%s: Can't find socket; have you started the server?\n\ |
45adde32 | 515 | To start the server in Emacs, type \"M-x server-start\".\n", |
9f637eea GM |
516 | argv[0]); |
517 | else | |
819b8f00 | 518 | fprintf (stderr, "%s: Can't stat %s: %s\n", |
152b6e83 | 519 | argv[0], server.sun_path, strerror (saved_errno)); |
819b8f00 | 520 | fail (); |
9f637eea GM |
521 | break; |
522 | } | |
efb859b4 | 523 | } |
46cec291 | 524 | |
4e23f2ba JB |
525 | if (connect (s, (struct sockaddr *) &server, strlen (server.sun_path) + 2) |
526 | < 0) | |
46cec291 RS |
527 | { |
528 | fprintf (stderr, "%s: ", argv[0]); | |
529 | perror ("connect"); | |
819b8f00 | 530 | fail (); |
46cec291 | 531 | } |
23a7488d RS |
532 | |
533 | /* We use the stream OUT to send our command to the server. */ | |
46cec291 RS |
534 | if ((out = fdopen (s, "r+")) == NULL) |
535 | { | |
536 | fprintf (stderr, "%s: ", argv[0]); | |
537 | perror ("fdopen"); | |
819b8f00 | 538 | fail (); |
46cec291 RS |
539 | } |
540 | ||
23a7488d RS |
541 | /* We use the stream IN to read the response. |
542 | We used to use just one stream for both output and input | |
543 | on the socket, but reversing direction works nonportably: | |
544 | on some systems, the output appears as the first input; | |
545 | on other systems it does not. */ | |
546 | if ((in = fdopen (s, "r+")) == NULL) | |
547 | { | |
548 | fprintf (stderr, "%s: ", argv[0]); | |
549 | perror ("fdopen"); | |
819b8f00 | 550 | fail (); |
23a7488d RS |
551 | } |
552 | ||
38732dba | 553 | #ifdef HAVE_GETCWD |
ee6a193c | 554 | cwd = getcwd (string, sizeof string); |
38732dba RS |
555 | #else |
556 | cwd = getwd (string); | |
ee6a193c | 557 | #endif |
46cec291 RS |
558 | if (cwd == 0) |
559 | { | |
560 | /* getwd puts message in STRING if it fails. */ | |
bb5618fe | 561 | |
38732dba | 562 | #ifdef HAVE_GETCWD |
bb5618fe JB |
563 | fprintf (stderr, "%s: %s (%s)\n", argv[0], |
564 | "Cannot get current working directory", strerror (errno)); | |
38732dba | 565 | #else |
bb5618fe | 566 | fprintf (stderr, "%s: %s (%s)\n", argv[0], string, strerror (errno)); |
bd252662 | 567 | #endif |
819b8f00 | 568 | fail (); |
46cec291 RS |
569 | } |
570 | ||
5212210c RS |
571 | if (nowait) |
572 | fprintf (out, "-nowait "); | |
292d74a3 | 573 | |
30be2360 SM |
574 | if (eval) |
575 | fprintf (out, "-eval "); | |
576 | ||
577 | if (display) | |
87209357 EZ |
578 | { |
579 | fprintf (out, "-display "); | |
580 | quote_file_name (display, out); | |
581 | fprintf (out, " "); | |
582 | } | |
30be2360 | 583 | |
16c290d8 | 584 | if (frame) |
9628b887 | 585 | { |
4d553a13 KL |
586 | char *tty_name = ttyname (fileno (stdin)); |
587 | if (! tty_name) | |
588 | fail (); | |
9628b887 | 589 | |
4d553a13 | 590 | init_signals (); |
9628b887 | 591 | |
819b8f00 | 592 | fprintf (out, "-tty "); |
4d553a13 | 593 | quote_file_name (tty_name, out); |
9628b887 KL |
594 | fprintf (out, " "); |
595 | quote_file_name (getenv("TERM"), out); | |
596 | fprintf (out, " "); | |
597 | } | |
598 | ||
87209357 | 599 | if ((argc - optind > 0)) |
5212210c | 600 | { |
87209357 | 601 | for (i = optind; i < argc; i++) |
46cec291 | 602 | { |
87209357 EZ |
603 | if (eval) |
604 | ; /* Don't prepend any cwd or anything like that. */ | |
605 | else if (*argv[i] == '+') | |
606 | { | |
607 | char *p = argv[i] + 1; | |
608 | while (isdigit ((unsigned char) *p) || *p == ':') p++; | |
609 | if (*p != 0) | |
610 | { | |
611 | quote_file_name (cwd, out); | |
612 | fprintf (out, "/"); | |
613 | } | |
614 | } | |
615 | else if (*argv[i] != '/') | |
616 | { | |
617 | quote_file_name (cwd, out); | |
618 | fprintf (out, "/"); | |
619 | } | |
620 | ||
621 | quote_file_name (argv[i], out); | |
622 | fprintf (out, " "); | |
46cec291 | 623 | } |
46cec291 | 624 | } |
87209357 EZ |
625 | else |
626 | { | |
16c290d8 | 627 | if (!frame) |
9628b887 KL |
628 | { |
629 | while ((str = fgets (string, BUFSIZ, stdin))) | |
630 | { | |
631 | quote_file_name (str, out); | |
632 | } | |
633 | fprintf (out, " "); | |
634 | } | |
87209357 EZ |
635 | } |
636 | ||
46cec291 RS |
637 | fprintf (out, "\n"); |
638 | fflush (out); | |
639 | ||
292d74a3 RS |
640 | /* Maybe wait for an answer. */ |
641 | if (nowait) | |
9628b887 | 642 | { |
9628b887 KL |
643 | return 0; |
644 | } | |
292d74a3 | 645 | |
4d553a13 | 646 | if (!eval && !frame) |
30be2360 SM |
647 | { |
648 | printf ("Waiting for Emacs..."); | |
649 | needlf = 2; | |
650 | } | |
46cec291 RS |
651 | fflush (stdout); |
652 | ||
3cf8c6aa | 653 | /* Now, wait for an answer and print any messages. */ |
e69233c2 | 654 | while ((str = fgets (string, BUFSIZ, in))) |
3cf8c6aa | 655 | { |
4d553a13 KL |
656 | if (frame) |
657 | { | |
658 | if (strprefix ("emacs-pid ", str)) | |
659 | { | |
660 | emacs_pid = strtol (string + strlen ("emacs-pid"), NULL, 10); | |
661 | } | |
662 | } | |
663 | else | |
664 | { | |
665 | if (needlf == 2) | |
666 | printf ("\n"); | |
667 | printf ("%s", str); | |
668 | needlf = str[0] == '\0' ? needlf : str[strlen (str) - 1] != '\n'; | |
669 | } | |
3cf8c6aa SM |
670 | } |
671 | ||
672 | if (needlf) | |
673 | printf ("\n"); | |
674 | fflush (stdout); | |
23a7488d | 675 | |
340ff9de | 676 | return 0; |
46cec291 RS |
677 | } |
678 | ||
30be2360 | 679 | #endif /* HAVE_SOCKETS */ |
27711600 RM |
680 | \f |
681 | #ifndef HAVE_STRERROR | |
682 | char * | |
683 | strerror (errnum) | |
684 | int errnum; | |
685 | { | |
686 | extern char *sys_errlist[]; | |
687 | extern int sys_nerr; | |
688 | ||
689 | if (errnum >= 0 && errnum < sys_nerr) | |
690 | return sys_errlist[errnum]; | |
691 | return (char *) "Unknown error"; | |
692 | } | |
693 | ||
694 | #endif /* ! HAVE_STRERROR */ | |
ab5796a9 MB |
695 | |
696 | /* arch-tag: f39bb9c4-73eb-477e-896d-50832e2ca9a7 | |
697 | (do not change this comment) */ |