Commit | Line | Data |
---|---|---|
efb859b4 | 1 | /* Client process that communicates with GNU Emacs acting as server. |
92b47a4a | 2 | Copyright (C) 1986, 1987, 1994, 1999, 2000, 2001, 2002, 2003, 2004, |
a5b68355 | 3 | 2005, 2006, 2007, 2008 Free Software Foundation, Inc. |
46cec291 RS |
4 | |
5 | This file is part of GNU Emacs. | |
6 | ||
294981c7 | 7 | GNU Emacs is free software: you can redistribute it and/or modify |
46cec291 | 8 | it under the terms of the GNU General Public License as published by |
294981c7 GM |
9 | the Free Software Foundation, either version 3 of the License, or |
10 | (at your option) any later version. | |
46cec291 RS |
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 | |
294981c7 | 18 | along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */ |
46cec291 RS |
19 | |
20 | ||
e69233c2 | 21 | #ifdef HAVE_CONFIG_H |
2f8fe2f4 | 22 | #include <config.h> |
e69233c2 PJ |
23 | #endif |
24 | ||
aa0b6932 | 25 | #ifdef WINDOWSNT |
aa0b6932 | 26 | |
bc28de71 JB |
27 | /* config.h defines these, which disables sockets altogether! */ |
28 | # undef _WINSOCKAPI_ | |
29 | # undef _WINSOCK_H | |
30 | ||
411b80a5 JB |
31 | # include <malloc.h> |
32 | # include <stdlib.h> | |
42073bfb | 33 | # include <windows.h> |
dbf60b07 | 34 | # include <commctrl.h> |
411b80a5 | 35 | |
411b80a5 JB |
36 | # define NO_SOCKETS_IN_FILE_SYSTEM |
37 | ||
aa0b6932 JB |
38 | # define HSOCKET SOCKET |
39 | # define CLOSE_SOCKET closesocket | |
aa0b6932 | 40 | # define INITIALIZE() (initialize_sockets ()) |
411b80a5 JB |
41 | |
42 | #else /* !WINDOWSNT */ | |
43 | ||
ed4a3730 JB |
44 | # include <sys/types.h> |
45 | ||
1e7823d0 JB |
46 | # ifdef HAVE_INET_SOCKETS |
47 | # include <netinet/in.h> | |
48 | # endif | |
411b80a5 | 49 | |
e35fc962 | 50 | # define INVALID_SOCKET -1 |
aa0b6932 JB |
51 | # define HSOCKET int |
52 | # define CLOSE_SOCKET close | |
aa0b6932 | 53 | # define INITIALIZE() |
411b80a5 JB |
54 | |
55 | #endif /* !WINDOWSNT */ | |
aa0b6932 | 56 | |
4e23f2ba | 57 | #undef signal |
46cec291 | 58 | |
42073bfb | 59 | #include <stdarg.h> |
e69233c2 | 60 | #include <ctype.h> |
8f9aaa0a | 61 | #include <stdio.h> |
aa0b6932 | 62 | #include "getopt.h" |
79f13bba DL |
63 | #ifdef HAVE_UNISTD_H |
64 | #include <unistd.h> | |
65 | #endif | |
8f9aaa0a | 66 | |
9f637eea GM |
67 | #ifdef VMS |
68 | # include "vms-pwd.h" | |
aa0b6932 JB |
69 | #else /* not VMS */ |
70 | #ifdef WINDOWSNT | |
71 | # include <io.h> | |
72 | #else /* not WINDOWSNT */ | |
9f637eea | 73 | # include <pwd.h> |
aa0b6932 | 74 | #endif /* not WINDOWSNT */ |
9f637eea | 75 | #endif /* not VMS */ |
dc4a4a14 | 76 | #include <sys/stat.h> |
9f637eea | 77 | |
9628b887 | 78 | #include <signal.h> |
4d553a13 | 79 | #include <errno.h> |
9628b887 KL |
80 | |
81 | \f | |
8f9aaa0a | 82 | char *getenv (), *getwd (); |
5b9562c3 | 83 | char *(getcwd) (); |
8f9aaa0a | 84 | |
7ce8671d JB |
85 | #ifdef WINDOWSNT |
86 | char *w32_getenv (); | |
87 | #define egetenv(VAR) w32_getenv(VAR) | |
88 | #else | |
89 | #define egetenv(VAR) getenv(VAR) | |
90 | #endif | |
91 | ||
8f9aaa0a RS |
92 | #ifndef VERSION |
93 | #define VERSION "unspecified" | |
94 | #endif | |
95 | \f | |
aa0b6932 JB |
96 | |
97 | #ifndef EXIT_SUCCESS | |
98 | #define EXIT_SUCCESS 0 | |
99 | #endif | |
100 | ||
101 | #ifndef EXIT_FAILURE | |
102 | #define EXIT_FAILURE 1 | |
103 | #endif | |
104 | ||
105 | #ifndef FALSE | |
106 | #define FALSE 0 | |
107 | #endif | |
108 | ||
109 | #ifndef TRUE | |
110 | #define TRUE 1 | |
111 | #endif | |
112 | ||
113 | #ifndef NO_RETURN | |
114 | #define NO_RETURN | |
115 | #endif | |
116 | \f | |
8f9aaa0a RS |
117 | /* Name used to invoke this program. */ |
118 | char *progname; | |
119 | ||
0a125897 KL |
120 | /* The second argument to main. */ |
121 | char **main_argv; | |
122 | ||
749ae770 | 123 | /* Nonzero means don't wait for a response from Emacs. --no-wait. */ |
8f9aaa0a RS |
124 | int nowait = 0; |
125 | ||
30be2360 SM |
126 | /* Nonzero means args are expressions to be evaluated. --eval. */ |
127 | int eval = 0; | |
128 | ||
31fa6595 SM |
129 | /* Nonzero means don't open a new frame. Inverse of --create-frame. */ |
130 | int current_frame = 1; | |
92071250 | 131 | |
77134727 KL |
132 | /* Nonzero means open a new graphical frame. */ |
133 | int window_system = 0; | |
134 | ||
30be2360 SM |
135 | /* The display on which Emacs should work. --display. */ |
136 | char *display = NULL; | |
137 | ||
9628b887 | 138 | /* Nonzero means open a new Emacs frame on the current terminal. */ |
77134727 | 139 | int tty = 0; |
9628b887 | 140 | |
30be2360 SM |
141 | /* If non-NULL, the name of an editor to fallback to if the server |
142 | is not running. --alternate-editor. */ | |
b03d27bd | 143 | const char *alternate_editor = NULL; |
30be2360 | 144 | |
3db926be | 145 | /* If non-NULL, the filename of the UNIX socket. */ |
254107e4 RS |
146 | char *socket_name = NULL; |
147 | ||
aa0b6932 JB |
148 | /* If non-NULL, the filename of the authentication file. */ |
149 | char *server_file = NULL; | |
150 | ||
c66648e0 JB |
151 | /* PID of the Emacs server process. */ |
152 | int emacs_pid = 0; | |
153 | ||
2381d38d | 154 | void print_help_and_exit () NO_RETURN; |
7f3bff3e | 155 | |
8f9aaa0a RS |
156 | struct option longopts[] = |
157 | { | |
749ae770 | 158 | { "no-wait", no_argument, NULL, 'n' }, |
30be2360 | 159 | { "eval", no_argument, NULL, 'e' }, |
8f9aaa0a RS |
160 | { "help", no_argument, NULL, 'H' }, |
161 | { "version", no_argument, NULL, 'V' }, | |
b28c910d | 162 | { "tty", no_argument, NULL, 't' }, |
31fa6595 | 163 | { "create-frame", no_argument, NULL, 'c' }, |
3cf8c6aa | 164 | { "alternate-editor", required_argument, NULL, 'a' }, |
b03d27bd | 165 | #ifndef NO_SOCKETS_IN_FILE_SYSTEM |
254107e4 | 166 | { "socket-name", required_argument, NULL, 's' }, |
b03d27bd | 167 | #endif |
aa0b6932 | 168 | { "server-file", required_argument, NULL, 'f' }, |
0ebec7d3 | 169 | #ifndef WINDOWSNT |
30be2360 | 170 | { "display", required_argument, NULL, 'd' }, |
0ebec7d3 | 171 | #endif |
30be2360 | 172 | { 0, 0, 0, 0 } |
8f9aaa0a RS |
173 | }; |
174 | ||
974b73e8 KL |
175 | \f |
176 | /* Like malloc but get fatal error if memory is exhausted. */ | |
177 | ||
178 | long * | |
179 | xmalloc (size) | |
180 | unsigned int size; | |
181 | { | |
182 | long *result = (long *) malloc (size); | |
183 | if (result == NULL) | |
184 | { | |
185 | perror ("malloc"); | |
186 | exit (EXIT_FAILURE); | |
187 | } | |
188 | return result; | |
189 | } | |
190 | ||
191 | /* Like strdup but get a fatal error if memory is exhausted. */ | |
192 | ||
193 | char * | |
194 | xstrdup (const char *s) | |
195 | { | |
196 | char *result = strdup (s); | |
197 | if (result == NULL) | |
198 | { | |
199 | perror ("strdup"); | |
200 | exit (EXIT_FAILURE); | |
201 | } | |
202 | return result; | |
203 | } | |
204 | ||
205 | /* From sysdep.c */ | |
206 | #if !defined (HAVE_GET_CURRENT_DIR_NAME) || defined (BROKEN_GET_CURRENT_DIR_NAME) | |
207 | ||
cb06b8dc SM |
208 | /* From lisp.h */ |
209 | #ifndef DIRECTORY_SEP | |
210 | #define DIRECTORY_SEP '/' | |
211 | #endif | |
212 | #ifndef IS_DIRECTORY_SEP | |
213 | #define IS_DIRECTORY_SEP(_c_) ((_c_) == DIRECTORY_SEP) | |
214 | #endif | |
215 | #ifndef IS_DEVICE_SEP | |
216 | #ifndef DEVICE_SEP | |
217 | #define IS_DEVICE_SEP(_c_) 0 | |
218 | #else | |
219 | #define IS_DEVICE_SEP(_c_) ((_c_) == DEVICE_SEP) | |
220 | #endif | |
221 | #endif | |
222 | #ifndef IS_ANY_SEP | |
223 | #define IS_ANY_SEP(_c_) (IS_DIRECTORY_SEP (_c_)) | |
224 | #endif | |
225 | ||
226 | ||
974b73e8 | 227 | /* Return the current working directory. Returns NULL on errors. |
5ab73228 | 228 | Any other returned value must be freed with free. This is used |
974b73e8 KL |
229 | only when get_current_dir_name is not defined on the system. */ |
230 | char* | |
231 | get_current_dir_name () | |
232 | { | |
233 | char *buf; | |
234 | char *pwd; | |
235 | struct stat dotstat, pwdstat; | |
236 | /* If PWD is accurate, use it instead of calling getwd. PWD is | |
237 | sometimes a nicer name, and using it may avoid a fatal error if a | |
238 | parent directory is searchable but not readable. */ | |
7ce8671d | 239 | if ((pwd = egetenv ("PWD")) != 0 |
974b73e8 KL |
240 | && (IS_DIRECTORY_SEP (*pwd) || (*pwd && IS_DEVICE_SEP (pwd[1]))) |
241 | && stat (pwd, &pwdstat) == 0 | |
242 | && stat (".", &dotstat) == 0 | |
243 | && dotstat.st_ino == pwdstat.st_ino | |
244 | && dotstat.st_dev == pwdstat.st_dev | |
245 | #ifdef MAXPATHLEN | |
246 | && strlen (pwd) < MAXPATHLEN | |
247 | #endif | |
248 | ) | |
249 | { | |
250 | buf = (char *) xmalloc (strlen (pwd) + 1); | |
251 | if (!buf) | |
252 | return NULL; | |
253 | strcpy (buf, pwd); | |
254 | } | |
255 | #ifdef HAVE_GETCWD | |
256 | else | |
257 | { | |
258 | size_t buf_size = 1024; | |
259 | buf = (char *) xmalloc (buf_size); | |
260 | if (!buf) | |
261 | return NULL; | |
262 | for (;;) | |
263 | { | |
264 | if (getcwd (buf, buf_size) == buf) | |
265 | break; | |
266 | if (errno != ERANGE) | |
267 | { | |
268 | int tmp_errno = errno; | |
269 | free (buf); | |
270 | errno = tmp_errno; | |
271 | return NULL; | |
272 | } | |
273 | buf_size *= 2; | |
274 | buf = (char *) realloc (buf, buf_size); | |
275 | if (!buf) | |
276 | return NULL; | |
277 | } | |
278 | } | |
279 | #else | |
280 | else | |
281 | { | |
282 | /* We need MAXPATHLEN here. */ | |
283 | buf = (char *) xmalloc (MAXPATHLEN + 1); | |
284 | if (!buf) | |
285 | return NULL; | |
286 | if (getwd (buf) == NULL) | |
287 | { | |
288 | int tmp_errno = errno; | |
289 | free (buf); | |
290 | errno = tmp_errno; | |
291 | return NULL; | |
292 | } | |
293 | } | |
294 | #endif | |
295 | return buf; | |
296 | } | |
297 | #endif | |
298 | ||
42073bfb | 299 | #ifdef WINDOWSNT |
7ce8671d JB |
300 | |
301 | #define REG_ROOT "SOFTWARE\\GNU\\Emacs" | |
302 | ||
303 | /* Retrieve an environment variable from the Emacs subkeys of the registry. | |
304 | Return NULL if the variable was not found, or it was empty. | |
305 | This code is based on w32_get_resource (w32.c). */ | |
306 | char * | |
307 | w32_get_resource (predefined, key, type) | |
308 | HKEY predefined; | |
309 | char *key; | |
310 | LPDWORD type; | |
311 | { | |
312 | HKEY hrootkey = NULL; | |
313 | char *result = NULL; | |
314 | DWORD cbData; | |
315 | ||
316 | if (RegOpenKeyEx (predefined, REG_ROOT, 0, KEY_READ, &hrootkey) == ERROR_SUCCESS) | |
317 | { | |
318 | if (RegQueryValueEx (hrootkey, key, NULL, NULL, NULL, &cbData) == ERROR_SUCCESS) | |
319 | { | |
320 | result = (char *) xmalloc (cbData); | |
321 | ||
322 | if ((RegQueryValueEx (hrootkey, key, NULL, type, result, &cbData) != ERROR_SUCCESS) || | |
323 | (*result == 0)) | |
324 | { | |
325 | free (result); | |
326 | result = NULL; | |
327 | } | |
328 | } | |
329 | ||
330 | RegCloseKey (hrootkey); | |
331 | } | |
332 | ||
333 | return result; | |
334 | } | |
335 | ||
336 | /* | |
337 | getenv wrapper for Windows | |
338 | ||
339 | This is needed to duplicate Emacs's behavior, which is to look for enviroment | |
340 | variables in the registry if they don't appear in the environment. | |
341 | */ | |
342 | char * | |
343 | w32_getenv (envvar) | |
344 | char *envvar; | |
345 | { | |
346 | char *value; | |
347 | DWORD dwType; | |
348 | ||
349 | if (value = getenv (envvar)) | |
350 | /* Found in the environment. */ | |
351 | return value; | |
352 | ||
353 | if (! (value = w32_get_resource (HKEY_CURRENT_USER, envvar, &dwType)) && | |
354 | ! (value = w32_get_resource (HKEY_LOCAL_MACHINE, envvar, &dwType))) | |
355 | /* Not found in the registry. */ | |
356 | return NULL; | |
357 | ||
358 | if (dwType == REG_SZ) | |
359 | /* Registry; no need to expand. */ | |
360 | return value; | |
361 | ||
362 | if (dwType == REG_EXPAND_SZ) | |
363 | { | |
364 | DWORD size; | |
365 | ||
366 | if (size = ExpandEnvironmentStrings (value, NULL, 0)) | |
367 | { | |
368 | char *buffer = (char *) xmalloc (size); | |
369 | if (ExpandEnvironmentStrings (value, buffer, size)) | |
370 | { | |
371 | /* Found and expanded. */ | |
372 | free (value); | |
373 | return buffer; | |
374 | } | |
375 | ||
376 | /* Error expanding. */ | |
377 | free (buffer); | |
378 | } | |
379 | } | |
380 | ||
381 | /* Not the right type, or not correctly expanded. */ | |
382 | free (value); | |
383 | return NULL; | |
384 | } | |
385 | ||
42073bfb | 386 | int |
f0384499 | 387 | w32_window_app () |
42073bfb JB |
388 | { |
389 | static int window_app = -1; | |
390 | char szTitle[MAX_PATH]; | |
391 | ||
392 | if (window_app < 0) | |
dbf60b07 JR |
393 | { |
394 | /* Checking for STDOUT does not work; it's a valid handle also in | |
395 | nonconsole apps. Testing for the console title seems to work. */ | |
396 | window_app = (GetConsoleTitleA (szTitle, MAX_PATH) == 0); | |
397 | if (window_app) | |
398 | InitCommonControls(); | |
399 | } | |
42073bfb JB |
400 | |
401 | return window_app; | |
402 | } | |
105faa84 DN |
403 | |
404 | /* | |
cb06b8dc | 405 | execvp wrapper for Windows. Quotes arguments with embedded spaces. |
105faa84 DN |
406 | |
407 | This is necessary due to the broken implementation of exec* routines in | |
408 | the Microsoft libraries: they concatenate the arguments together without | |
409 | quoting special characters, and pass the result to CreateProcess, with | |
410 | predictably bad results. By contrast, Posix execvp passes the arguments | |
411 | directly into the argv array of the child process. | |
412 | */ | |
413 | int | |
414 | w32_execvp (path, argv) | |
415 | char *path; | |
416 | char **argv; | |
417 | { | |
418 | int i; | |
419 | ||
420 | /* Required to allow a .BAT script as alternate editor. */ | |
421 | argv[0] = (char *) alternate_editor; | |
422 | ||
423 | for (i = 0; argv[i]; i++) | |
424 | if (strchr (argv[i], ' ')) | |
425 | { | |
426 | char *quoted = alloca (strlen (argv[i]) + 3); | |
427 | sprintf (quoted, "\"%s\"", argv[i]); | |
428 | argv[i] = quoted; | |
429 | } | |
430 | ||
431 | return execvp (path, argv); | |
432 | } | |
433 | ||
434 | #undef execvp | |
435 | #define execvp w32_execvp | |
436 | ||
437 | #endif /* WINDOWSNT */ | |
42073bfb | 438 | |
f387c1ee JB |
439 | /* Display a normal or error message. |
440 | On Windows, use a message box if compiled as a Windows app. */ | |
42073bfb JB |
441 | void |
442 | message (int is_error, char *message, ...) | |
443 | { | |
c66648e0 | 444 | char msg [2048]; |
42073bfb JB |
445 | va_list args; |
446 | ||
447 | va_start (args, message); | |
42073bfb JB |
448 | vsprintf (msg, message, args); |
449 | va_end (args); | |
450 | ||
451 | #ifdef WINDOWSNT | |
452 | if (w32_window_app ()) | |
453 | { | |
454 | if (is_error) | |
455 | MessageBox (NULL, msg, "Emacsclient ERROR", MB_ICONERROR); | |
456 | else | |
457 | MessageBox (NULL, msg, "Emacsclient", MB_ICONINFORMATION); | |
458 | } | |
459 | else | |
460 | #endif | |
9219db75 JB |
461 | { |
462 | FILE *f = is_error ? stderr : stdout; | |
463 | ||
464 | fputs (msg, f); | |
465 | fflush (f); | |
466 | } | |
42073bfb JB |
467 | } |
468 | ||
8f9aaa0a | 469 | /* Decode the options from argv and argc. |
5212210c | 470 | The global variable `optind' will say how many arguments we used up. */ |
8f9aaa0a | 471 | |
5212210c | 472 | void |
8f9aaa0a RS |
473 | decode_options (argc, argv) |
474 | int argc; | |
475 | char **argv; | |
476 | { | |
7ce8671d | 477 | alternate_editor = egetenv ("ALTERNATE_EDITOR"); |
0ea5797a | 478 | |
8f9aaa0a RS |
479 | while (1) |
480 | { | |
481 | int opt = getopt_long (argc, argv, | |
b03d27bd | 482 | #ifndef NO_SOCKETS_IN_FILE_SYSTEM |
974b73e8 | 483 | "VHnea:s:f:d:tc", |
b03d27bd | 484 | #else |
974b73e8 | 485 | "VHnea:f:d:tc", |
b03d27bd | 486 | #endif |
974b73e8 | 487 | longopts, 0); |
8f9aaa0a RS |
488 | |
489 | if (opt == EOF) | |
490 | break; | |
491 | ||
492 | switch (opt) | |
493 | { | |
494 | case 0: | |
495 | /* If getopt returns 0, then it has already processed a | |
496 | long-named option. We should do nothing. */ | |
497 | break; | |
e69233c2 | 498 | |
97e3214d GM |
499 | case 'a': |
500 | alternate_editor = optarg; | |
501 | break; | |
e69233c2 | 502 | |
b03d27bd | 503 | #ifndef NO_SOCKETS_IN_FILE_SYSTEM |
254107e4 RS |
504 | case 's': |
505 | socket_name = optarg; | |
506 | break; | |
b03d27bd | 507 | #endif |
254107e4 | 508 | |
aa0b6932 JB |
509 | case 'f': |
510 | server_file = optarg; | |
511 | break; | |
254107e4 | 512 | |
0ea5797a SM |
513 | /* We used to disallow this argument in w32, but it seems better |
514 | to allow it, for the occasional case where the user is | |
515 | connecting with a w32 client to a server compiled with X11 | |
516 | support. */ | |
517 | #if 1 /* !defined WINDOWS */ | |
30be2360 SM |
518 | case 'd': |
519 | display = optarg; | |
520 | break; | |
0ebec7d3 | 521 | #endif |
30be2360 | 522 | |
8f9aaa0a RS |
523 | case 'n': |
524 | nowait = 1; | |
525 | break; | |
526 | ||
30be2360 SM |
527 | case 'e': |
528 | eval = 1; | |
529 | break; | |
530 | ||
8f9aaa0a | 531 | case 'V': |
42073bfb | 532 | message (FALSE, "emacsclient %s\n", VERSION); |
65396510 | 533 | exit (EXIT_SUCCESS); |
8f9aaa0a | 534 | break; |
46cec291 | 535 | |
819b8f00 | 536 | case 't': |
77134727 | 537 | tty = 1; |
c1b8e896 | 538 | current_frame = 0; |
77134727 KL |
539 | break; |
540 | ||
e5299d8d | 541 | case 'c': |
31fa6595 | 542 | current_frame = 0; |
9628b887 | 543 | break; |
0b0d3e0b | 544 | |
8f9aaa0a | 545 | case 'H': |
8f9aaa0a | 546 | print_help_and_exit (); |
20c396e8 JB |
547 | break; |
548 | ||
549 | default: | |
42073bfb | 550 | message (TRUE, "Try `%s --help' for more information\n", progname); |
65396510 | 551 | exit (EXIT_FAILURE); |
20c396e8 | 552 | break; |
8f9aaa0a RS |
553 | } |
554 | } | |
9628b887 | 555 | |
9997dc15 SM |
556 | /* We used to set `display' to $DISPLAY by default, but this changed the |
557 | default behavior and is sometimes inconvenient. So instead of forcing | |
558 | users to say "--display ''" when they want to use Emacs's existing tty | |
559 | or display connection, we force them to use "--display $DISPLAY" if | |
560 | they want Emacs to connect to their current display. | |
561 | -c still implicitly passes --display $DISPLAY unless -t was specified | |
562 | so as to try and mimick the behavior of `emacs' which either uses | |
563 | the current tty or the current $DISPLAY. */ | |
09317bf4 | 564 | if (!current_frame && !tty && !display) |
9997dc15 SM |
565 | display = egetenv ("DISPLAY"); |
566 | ||
0ea5797a SM |
567 | if (display && strlen (display) == 0) |
568 | display = NULL; | |
569 | ||
92071250 KL |
570 | if (!tty && display) |
571 | window_system = 1; | |
9e2a2647 | 572 | #if !defined (WINDOWSNT) |
9997dc15 | 573 | else if (!current_frame) |
92071250 | 574 | tty = 1; |
1d00cfd4 | 575 | #endif |
c0f342ab | 576 | |
b8ccaf6f KL |
577 | /* --no-wait implies --current-frame on ttys when there are file |
578 | arguments or expressions given. */ | |
579 | if (nowait && tty && argc - optind > 0) | |
92071250 KL |
580 | current_frame = 1; |
581 | ||
582 | if (current_frame) | |
583 | { | |
584 | tty = 0; | |
585 | window_system = 0; | |
586 | } | |
587 | ||
588 | if (tty) | |
589 | window_system = 0; | |
8f9aaa0a RS |
590 | } |
591 | ||
974b73e8 | 592 | \f |
7f3bff3e | 593 | void |
8f9aaa0a RS |
594 | print_help_and_exit () |
595 | { | |
c0f342ab JB |
596 | /* Spaces and tabs are significant in this message; they're chosen so the |
597 | message aligns properly both in a tty and in a Windows message box. | |
598 | Please try to preserve them; otherwise the output is very hard to read | |
599 | when using emacsclientw. */ | |
42073bfb | 600 | message (FALSE, |
974b73e8 | 601 | "Usage: %s [OPTIONS] FILE...\n\ |
30be2360 SM |
602 | Tell the Emacs server to visit the specified files.\n\ |
603 | Every FILE can be either just a FILENAME or [+LINE[:COLUMN]] FILENAME.\n\ | |
20c396e8 | 604 | \n\ |
30be2360 | 605 | The following OPTIONS are accepted:\n\ |
c0f342ab JB |
606 | -V, --version Just print version info and return\n\ |
607 | -H, --help Print this usage information message\n\ | |
608 | -t, --tty Open a new Emacs frame on the current terminal\n\ | |
c4b858e3 | 609 | -c, --create-frame Create a new frame instead of trying to\n\ |
c0f342ab JB |
610 | use the current Emacs frame\n\ |
611 | -e, --eval Evaluate the FILE arguments as ELisp expressions\n\ | |
d07529f3 JB |
612 | -n, --no-wait Don't wait for the server to return\n\ |
613 | -d, --display=DISPLAY Visit the file in the given display\n" | |
aa0b6932 JB |
614 | #ifndef NO_SOCKETS_IN_FILE_SYSTEM |
615 | "-s, --socket-name=FILENAME\n\ | |
c0f342ab | 616 | Set filename of the UNIX socket for communication\n" |
aa0b6932 JB |
617 | #endif |
618 | "-f, --server-file=FILENAME\n\ | |
c0f342ab | 619 | Set filename of the TCP authentication file\n\ |
30be2360 | 620 | -a, --alternate-editor=EDITOR\n\ |
c0f342ab | 621 | Editor to fallback to if the server is not running\n\ |
20c396e8 | 622 | \n\ |
30be2360 | 623 | Report bugs to bug-gnu-emacs@gnu.org.\n", progname); |
65396510 | 624 | exit (EXIT_SUCCESS); |
8f9aaa0a | 625 | } |
5212210c | 626 | |
aa0b6932 JB |
627 | /* |
628 | Try to run a different command, or --if no alternate editor is | |
629 | defined-- exit with an errorcode. | |
cb06b8dc | 630 | Uses argv, but gets it from the global variable main_argv. |
aa0b6932 JB |
631 | */ |
632 | void | |
974b73e8 | 633 | fail (void) |
9002956f | 634 | { |
aa0b6932 | 635 | if (alternate_editor) |
9002956f | 636 | { |
aa0b6932 | 637 | int i = optind - 1; |
4472aef4 | 638 | |
974b73e8 | 639 | execvp (alternate_editor, main_argv + i); |
42073bfb | 640 | message (TRUE, "%s: error executing alternate editor \"%s\"\n", |
974b73e8 | 641 | progname, alternate_editor); |
9002956f | 642 | } |
aa0b6932 | 643 | exit (EXIT_FAILURE); |
9002956f KL |
644 | } |
645 | ||
aa0b6932 | 646 | \f |
1e7823d0 | 647 | #if !defined (HAVE_SOCKETS) || !defined (HAVE_INET_SOCKETS) |
9002956f | 648 | |
aa0b6932 JB |
649 | int |
650 | main (argc, argv) | |
651 | int argc; | |
652 | char **argv; | |
9002956f | 653 | { |
974b73e8 KL |
654 | main_argv = argv; |
655 | progname = argv[0]; | |
656 | message (TRUE, "%s: Sorry, the Emacs server is supported only\n" | |
c0f342ab | 657 | "on systems with Berkeley sockets.\n", |
aa0b6932 | 658 | argv[0]); |
974b73e8 | 659 | fail (); |
9002956f KL |
660 | } |
661 | ||
1e7823d0 | 662 | #else /* HAVE_SOCKETS && HAVE_INET_SOCKETS */ |
2828d5f9 | 663 | |
aa0b6932 JB |
664 | #ifdef WINDOWSNT |
665 | # include <winsock2.h> | |
2828d5f9 | 666 | #else |
aa0b6932 JB |
667 | # include <sys/types.h> |
668 | # include <sys/socket.h> | |
669 | # include <sys/un.h> | |
aa0b6932 JB |
670 | #endif |
671 | ||
672 | #define AUTH_KEY_LENGTH 64 | |
673 | #define SEND_BUFFER_SIZE 4096 | |
674 | ||
675 | extern char *strerror (); | |
676 | extern int errno; | |
677 | ||
678 | /* Buffer to accumulate data to send in TCP connections. */ | |
679 | char send_buffer[SEND_BUFFER_SIZE + 1]; | |
680 | int sblen = 0; /* Fill pointer for the send buffer. */ | |
4b7b77f6 JR |
681 | /* Socket used to communicate with the Emacs server process. */ |
682 | HSOCKET emacs_socket = 0; | |
aa0b6932 | 683 | |
d22b00e5 JR |
684 | /* On Windows, the socket library was historically separate from the standard |
685 | C library, so errors are handled differently. */ | |
686 | void | |
687 | sock_err_message (function_name) | |
688 | char *function_name; | |
689 | { | |
690 | #ifdef WINDOWSNT | |
691 | char* msg = NULL; | |
692 | ||
693 | FormatMessage (FORMAT_MESSAGE_FROM_SYSTEM | |
694 | | FORMAT_MESSAGE_ALLOCATE_BUFFER | |
695 | | FORMAT_MESSAGE_ARGUMENT_ARRAY, | |
696 | NULL, WSAGetLastError (), 0, (LPTSTR)&msg, 0, NULL); | |
697 | ||
698 | message (TRUE, "%s: %s: %s\n", progname, function_name, msg); | |
699 | ||
700 | LocalFree (msg); | |
701 | #else | |
702 | message (TRUE, "%s: %s: %s\n", progname, function_name, strerror (errno)); | |
703 | #endif | |
704 | } | |
705 | ||
706 | ||
aa0b6932 JB |
707 | /* Let's send the data to Emacs when either |
708 | - the data ends in "\n", or | |
709 | - the buffer is full (but this shouldn't happen) | |
710 | Otherwise, we just accumulate it. */ | |
b03d27bd JB |
711 | void |
712 | send_to_emacs (s, data) | |
aa0b6932 JB |
713 | HSOCKET s; |
714 | char *data; | |
715 | { | |
716 | while (data) | |
2828d5f9 | 717 | { |
aa0b6932 JB |
718 | int dlen = strlen (data); |
719 | if (dlen + sblen >= SEND_BUFFER_SIZE) | |
720 | { | |
721 | int part = SEND_BUFFER_SIZE - sblen; | |
722 | strncpy (&send_buffer[sblen], data, part); | |
723 | data += part; | |
724 | sblen = SEND_BUFFER_SIZE; | |
725 | } | |
726 | else if (dlen) | |
727 | { | |
728 | strcpy (&send_buffer[sblen], data); | |
729 | data = NULL; | |
730 | sblen += dlen; | |
731 | } | |
732 | else | |
733 | break; | |
734 | ||
735 | if (sblen == SEND_BUFFER_SIZE | |
736 | || (sblen > 0 && send_buffer[sblen-1] == '\n')) | |
737 | { | |
738 | int sent = send (s, send_buffer, sblen, 0); | |
739 | if (sent != sblen) | |
740 | strcpy (send_buffer, &send_buffer[sent]); | |
741 | sblen -= sent; | |
742 | } | |
2828d5f9 | 743 | } |
2828d5f9 | 744 | } |
2828d5f9 KL |
745 | |
746 | \f | |
0b0d3e0b | 747 | /* In STR, insert a & before each &, each space, each newline, and |
a4cf2096 | 748 | any initial -. Change spaces to underscores, too, so that the |
0b0d3e0b KL |
749 | return value never contains a space. |
750 | ||
751 | Does not change the string. Outputs the result to STREAM. */ | |
87209357 | 752 | void |
974b73e8 | 753 | quote_argument (s, str) |
aa0b6932 | 754 | HSOCKET s; |
0b0d3e0b | 755 | char *str; |
5212210c | 756 | { |
9002956f | 757 | char *copy = (char *) xmalloc (strlen (str) * 2 + 1); |
5212210c RS |
758 | char *p, *q; |
759 | ||
0b0d3e0b | 760 | p = str; |
5212210c RS |
761 | q = copy; |
762 | while (*p) | |
763 | { | |
764 | if (*p == ' ') | |
765 | { | |
f1db6a73 | 766 | *q++ = '&'; |
5212210c RS |
767 | *q++ = '_'; |
768 | p++; | |
769 | } | |
3cf8c6aa SM |
770 | else if (*p == '\n') |
771 | { | |
772 | *q++ = '&'; | |
773 | *q++ = 'n'; | |
774 | p++; | |
775 | } | |
5212210c RS |
776 | else |
777 | { | |
0b0d3e0b | 778 | if (*p == '&' || (*p == '-' && p == str)) |
f1db6a73 | 779 | *q++ = '&'; |
5212210c RS |
780 | *q++ = *p++; |
781 | } | |
782 | } | |
f1db6a73 | 783 | *q++ = 0; |
5212210c | 784 | |
486ba65f | 785 | send_to_emacs (s, copy); |
87209357 EZ |
786 | |
787 | free (copy); | |
5212210c | 788 | } |
0c76956f | 789 | |
0b0d3e0b KL |
790 | |
791 | /* The inverse of quote_argument. Removes quoting in string STR by | |
792 | modifying the string in place. Returns STR. */ | |
793 | ||
794 | char * | |
795 | unquote_argument (str) | |
796 | char *str; | |
797 | { | |
798 | char *p, *q; | |
799 | ||
800 | if (! str) | |
801 | return str; | |
802 | ||
803 | p = str; | |
804 | q = str; | |
805 | while (*p) | |
806 | { | |
807 | if (*p == '&') | |
808 | { | |
809 | p++; | |
810 | if (*p == '&') | |
811 | *p = '&'; | |
812 | else if (*p == '_') | |
813 | *p = ' '; | |
814 | else if (*p == 'n') | |
815 | *p = '\n'; | |
816 | else if (*p == '-') | |
817 | *p = '-'; | |
818 | } | |
819 | *q++ = *p++; | |
820 | } | |
821 | *q = 0; | |
822 | return str; | |
823 | } | |
824 | ||
8f9aaa0a | 825 | \f |
b03d27bd JB |
826 | int |
827 | file_name_absolute_p (filename) | |
828 | const unsigned char *filename; | |
829 | { | |
830 | /* Sanity check, it shouldn't happen. */ | |
831 | if (! filename) return FALSE; | |
832 | ||
833 | /* /xxx is always an absolute path. */ | |
834 | if (filename[0] == '/') return TRUE; | |
835 | ||
836 | /* Empty filenames (which shouldn't happen) are relative. */ | |
837 | if (filename[0] == '\0') return FALSE; | |
838 | ||
839 | #ifdef WINDOWSNT | |
71b8f735 | 840 | /* X:\xxx is always absolute. */ |
5f7a4874 | 841 | if (isalpha (filename[0]) |
cb0297bb | 842 | && filename[1] == ':' && (filename[2] == '\\' || filename[2] == '/')) |
b03d27bd JB |
843 | return TRUE; |
844 | ||
845 | /* Both \xxx and \\xxx\yyy are absolute. */ | |
846 | if (filename[0] == '\\') return TRUE; | |
847 | #endif | |
848 | ||
849 | return FALSE; | |
850 | } | |
851 | ||
aa0b6932 | 852 | #ifdef WINDOWSNT |
f0384499 | 853 | /* Wrapper to make WSACleanup a cdecl, as required by atexit. */ |
b03d27bd JB |
854 | void |
855 | __cdecl close_winsock () | |
aa0b6932 JB |
856 | { |
857 | WSACleanup (); | |
858 | } | |
0c76956f | 859 | |
b03d27bd JB |
860 | /* Initialize the WinSock2 library. */ |
861 | void | |
862 | initialize_sockets () | |
0c76956f | 863 | { |
aa0b6932 JB |
864 | WSADATA wsaData; |
865 | ||
aa0b6932 JB |
866 | if (WSAStartup (MAKEWORD (2, 0), &wsaData)) |
867 | { | |
78da39c6 | 868 | message (TRUE, "%s: error initializing WinSock2\n", progname); |
aa0b6932 JB |
869 | exit (EXIT_FAILURE); |
870 | } | |
871 | ||
872 | atexit (close_winsock); | |
0c76956f | 873 | } |
e35fc962 | 874 | #endif /* WINDOWSNT */ |
974b73e8 | 875 | |
8f9aaa0a | 876 | \f |
97e3214d | 877 | /* |
aa0b6932 | 878 | * Read the information needed to set up a TCP comm channel with |
434a6c5d | 879 | * the Emacs server: host, port, pid and authentication string. |
0e0dced5 | 880 | */ |
b03d27bd JB |
881 | int |
882 | get_server_config (server, authentication) | |
aa0b6932 JB |
883 | struct sockaddr_in *server; |
884 | char *authentication; | |
97e3214d | 885 | { |
aa0b6932 JB |
886 | char dotted[32]; |
887 | char *port; | |
434a6c5d | 888 | char *pid; |
b03d27bd | 889 | FILE *config = NULL; |
aa0b6932 | 890 | |
b03d27bd JB |
891 | if (file_name_absolute_p (server_file)) |
892 | config = fopen (server_file, "rb"); | |
893 | else | |
97e3214d | 894 | { |
7ce8671d | 895 | char *home = egetenv ("HOME"); |
88b46d84 | 896 | |
aa0b6932 JB |
897 | if (home) |
898 | { | |
899 | char *path = alloca (32 + strlen (home) + strlen (server_file)); | |
900 | sprintf (path, "%s/.emacs.d/server/%s", home, server_file); | |
901 | config = fopen (path, "rb"); | |
902 | } | |
88b46d84 | 903 | #ifdef WINDOWSNT |
7ce8671d | 904 | if (!config && (home = egetenv ("APPDATA"))) |
88b46d84 JB |
905 | { |
906 | char *path = alloca (32 + strlen (home) + strlen (server_file)); | |
907 | sprintf (path, "%s/.emacs.d/server/%s", home, server_file); | |
908 | config = fopen (path, "rb"); | |
909 | } | |
910 | #endif | |
aa0b6932 JB |
911 | } |
912 | ||
913 | if (! config) | |
914 | return FALSE; | |
915 | ||
916 | if (fgets (dotted, sizeof dotted, config) | |
434a6c5d JB |
917 | && (port = strchr (dotted, ':')) |
918 | && (pid = strchr (port, ' '))) | |
aa0b6932 JB |
919 | { |
920 | *port++ = '\0'; | |
434a6c5d | 921 | *pid++ = '\0'; |
97e3214d GM |
922 | } |
923 | else | |
924 | { | |
78da39c6 | 925 | message (TRUE, "%s: invalid configuration info\n", progname); |
65396510 | 926 | exit (EXIT_FAILURE); |
97e3214d | 927 | } |
97e3214d | 928 | |
aa0b6932 JB |
929 | server->sin_family = AF_INET; |
930 | server->sin_addr.s_addr = inet_addr (dotted); | |
931 | server->sin_port = htons (atoi (port)); | |
97e3214d | 932 | |
aa0b6932 JB |
933 | if (! fread (authentication, AUTH_KEY_LENGTH, 1, config)) |
934 | { | |
78da39c6 | 935 | message (TRUE, "%s: cannot read authentication info\n", progname); |
aa0b6932 JB |
936 | exit (EXIT_FAILURE); |
937 | } | |
46cec291 | 938 | |
aa0b6932 | 939 | fclose (config); |
97e3214d | 940 | |
c66648e0 | 941 | emacs_pid = atoi (pid); |
434a6c5d | 942 | |
aa0b6932 | 943 | return TRUE; |
97e3214d GM |
944 | } |
945 | ||
aa0b6932 JB |
946 | HSOCKET |
947 | set_tcp_socket () | |
948 | { | |
949 | HSOCKET s; | |
950 | struct sockaddr_in server; | |
aa0b6932 JB |
951 | struct linger l_arg = {1, 1}; |
952 | char auth_string[AUTH_KEY_LENGTH + 1]; | |
9628b887 | 953 | |
aa0b6932 JB |
954 | if (! get_server_config (&server, auth_string)) |
955 | return INVALID_SOCKET; | |
956 | ||
b03d27bd | 957 | if (server.sin_addr.s_addr != inet_addr ("127.0.0.1")) |
9219db75 | 958 | message (FALSE, "%s: connected to remote socket at %s\n", |
b03d27bd JB |
959 | progname, inet_ntoa (server.sin_addr)); |
960 | ||
aa0b6932 JB |
961 | /* |
962 | * Open up an AF_INET socket | |
963 | */ | |
964 | if ((s = socket (AF_INET, SOCK_STREAM, IPPROTO_TCP)) < 0) | |
965 | { | |
d22b00e5 | 966 | sock_err_message ("socket"); |
aa0b6932 JB |
967 | return INVALID_SOCKET; |
968 | } | |
969 | ||
970 | /* | |
971 | * Set up the socket | |
972 | */ | |
973 | if (connect (s, (struct sockaddr *) &server, sizeof server) < 0) | |
974 | { | |
d22b00e5 | 975 | sock_err_message ("connect"); |
aa0b6932 JB |
976 | return INVALID_SOCKET; |
977 | } | |
978 | ||
aa0b6932 JB |
979 | setsockopt (s, SOL_SOCKET, SO_LINGER, (char *) &l_arg, sizeof l_arg); |
980 | ||
981 | /* | |
982 | * Send the authentication | |
983 | */ | |
984 | auth_string[AUTH_KEY_LENGTH] = '\0'; | |
985 | ||
486ba65f JR |
986 | send_to_emacs (s, "-auth "); |
987 | send_to_emacs (s, auth_string); | |
5ab73228 | 988 | send_to_emacs (s, " "); |
aa0b6932 JB |
989 | |
990 | return s; | |
991 | } | |
992 | ||
b2ff54a0 JR |
993 | |
994 | /* Returns 1 if PREFIX is a prefix of STRING. */ | |
995 | static int | |
996 | strprefix (char *prefix, char *string) | |
997 | { | |
cb06b8dc | 998 | return !strncmp (prefix, string, strlen (prefix)); |
b2ff54a0 JR |
999 | } |
1000 | ||
1001 | ||
aa0b6932 | 1002 | #if !defined (NO_SOCKETS_IN_FILE_SYSTEM) |
46cec291 | 1003 | |
9f637eea GM |
1004 | /* Three possibilities: |
1005 | 2 - can't be `stat'ed (sets errno) | |
1006 | 1 - isn't owned by us | |
1007 | 0 - success: none of the above */ | |
1008 | ||
1009 | static int | |
1010 | socket_status (socket_name) | |
1011 | char *socket_name; | |
1012 | { | |
1013 | struct stat statbfr; | |
1014 | ||
1015 | if (stat (socket_name, &statbfr) == -1) | |
1016 | return 2; | |
1017 | ||
1018 | if (statbfr.st_uid != geteuid ()) | |
1019 | return 1; | |
0b0d3e0b | 1020 | |
9f637eea GM |
1021 | return 0; |
1022 | } | |
1023 | ||
974b73e8 | 1024 | \f |
da8e1115 KL |
1025 | /* A signal handler that passes the signal to the Emacs process. |
1026 | Useful for SIGWINCH. */ | |
1027 | ||
9628b887 | 1028 | SIGTYPE |
428a555e | 1029 | pass_signal_to_emacs (int signalnum) |
9628b887 KL |
1030 | { |
1031 | int old_errno = errno; | |
1032 | ||
9f729af5 | 1033 | if (emacs_pid) |
428a555e | 1034 | kill (emacs_pid, signalnum); |
9f729af5 | 1035 | |
428a555e | 1036 | signal (signalnum, pass_signal_to_emacs); |
9f729af5 KL |
1037 | errno = old_errno; |
1038 | } | |
1039 | ||
0b0d3e0b KL |
1040 | /* Signal handler for SIGCONT; notify the Emacs process that it can |
1041 | now resume our tty frame. */ | |
1042 | ||
1043 | SIGTYPE | |
1044 | handle_sigcont (int signalnum) | |
1045 | { | |
1046 | int old_errno = errno; | |
1047 | ||
1048 | if (tcgetpgrp (1) == getpgrp ()) | |
1049 | { | |
1050 | /* We are in the foreground. */ | |
486ba65f | 1051 | send_to_emacs (emacs_socket, "-resume \n"); |
0b0d3e0b KL |
1052 | } |
1053 | else | |
1054 | { | |
1055 | /* We are in the background; cancel the continue. */ | |
1056 | kill (getpid (), SIGSTOP); | |
1057 | } | |
c6c53c3e KL |
1058 | |
1059 | signal (signalnum, handle_sigcont); | |
0b0d3e0b KL |
1060 | errno = old_errno; |
1061 | } | |
1062 | ||
1063 | /* Signal handler for SIGTSTP; notify the Emacs process that we are | |
1064 | going to sleep. Normally the suspend is initiated by Emacs via | |
1065 | server-handle-suspend-tty, but if the server gets out of sync with | |
1066 | reality, we may get a SIGTSTP on C-z. Handling this signal and | |
1067 | notifying Emacs about it should get things under control again. */ | |
1068 | ||
1069 | SIGTYPE | |
1070 | handle_sigtstp (int signalnum) | |
1071 | { | |
1072 | int old_errno = errno; | |
1073 | sigset_t set; | |
c0f342ab | 1074 | |
90843190 | 1075 | if (emacs_socket) |
486ba65f | 1076 | send_to_emacs (emacs_socket, "-suspend \n"); |
0b0d3e0b | 1077 | |
5ab73228 | 1078 | /* Unblock this signal and call the default handler by temporarily |
0b0d3e0b KL |
1079 | changing the handler and resignalling. */ |
1080 | sigprocmask (SIG_BLOCK, NULL, &set); | |
1081 | sigdelset (&set, signalnum); | |
1082 | signal (signalnum, SIG_DFL); | |
1083 | kill (getpid (), signalnum); | |
1084 | sigprocmask (SIG_SETMASK, &set, NULL); /* Let's the above signal through. */ | |
1085 | signal (signalnum, handle_sigtstp); | |
1086 | ||
1087 | errno = old_errno; | |
1088 | } | |
da8e1115 | 1089 | /* Set up signal handlers before opening a frame on the current tty. */ |
0b0d3e0b | 1090 | |
4d553a13 KL |
1091 | void |
1092 | init_signals (void) | |
9628b887 KL |
1093 | { |
1094 | /* Set up signal handlers. */ | |
428a555e | 1095 | signal (SIGWINCH, pass_signal_to_emacs); |
4ca927b4 KL |
1096 | |
1097 | /* Don't pass SIGINT and SIGQUIT to Emacs, because it has no way of | |
1098 | deciding which terminal the signal came from. C-g is now a | |
1099 | normal input event on secondary terminals. */ | |
1100 | #if 0 | |
428a555e KL |
1101 | signal (SIGINT, pass_signal_to_emacs); |
1102 | signal (SIGQUIT, pass_signal_to_emacs); | |
4ca927b4 | 1103 | #endif |
0b0d3e0b KL |
1104 | |
1105 | signal (SIGCONT, handle_sigcont); | |
1106 | signal (SIGTSTP, handle_sigtstp); | |
1107 | signal (SIGTTOU, handle_sigtstp); | |
9628b887 KL |
1108 | } |
1109 | ||
46cec291 | 1110 | |
aa0b6932 JB |
1111 | HSOCKET |
1112 | set_local_socket () | |
46cec291 | 1113 | { |
aa0b6932 | 1114 | HSOCKET s; |
46cec291 | 1115 | struct sockaddr_un server; |
46cec291 | 1116 | |
e69233c2 | 1117 | /* |
46cec291 RS |
1118 | * Open up an AF_UNIX socket in this person's home directory |
1119 | */ | |
1120 | ||
1121 | if ((s = socket (AF_UNIX, SOCK_STREAM, 0)) < 0) | |
1122 | { | |
42073bfb | 1123 | message (TRUE, "%s: socket: %s\n", progname, strerror (errno)); |
aa0b6932 | 1124 | return INVALID_SOCKET; |
46cec291 | 1125 | } |
e69233c2 | 1126 | |
46cec291 | 1127 | server.sun_family = AF_UNIX; |
c5fee545 | 1128 | |
c5fee545 | 1129 | { |
9f637eea | 1130 | int sock_status = 0; |
5c9659d3 | 1131 | int default_sock = !socket_name; |
b80bf66e | 1132 | int saved_errno = 0; |
0734b0d0 | 1133 | char *server_name = "server"; |
0b0d3e0b | 1134 | |
0734b0d0 SM |
1135 | if (socket_name && !index (socket_name, '/') && !index (socket_name, '\\')) |
1136 | { /* socket_name is a file name component. */ | |
d3a6748c KL |
1137 | server_name = socket_name; |
1138 | socket_name = NULL; | |
1139 | default_sock = 1; /* Try both UIDs. */ | |
0734b0d0 | 1140 | } |
efb859b4 | 1141 | |
5c9659d3 | 1142 | if (default_sock) |
254107e4 | 1143 | { |
d3a6748c KL |
1144 | socket_name = alloca (100 + strlen (server_name)); |
1145 | sprintf (socket_name, "/tmp/emacs%d/%s", | |
1146 | (int) geteuid (), server_name); | |
254107e4 RS |
1147 | } |
1148 | ||
1149 | if (strlen (socket_name) < sizeof (server.sun_path)) | |
1150 | strcpy (server.sun_path, socket_name); | |
1151 | else | |
819b8f00 | 1152 | { |
78da39c6 | 1153 | message (TRUE, "%s: socket-name %s too long\n", |
974b73e8 | 1154 | progname, socket_name); |
819b8f00 KL |
1155 | fail (); |
1156 | } | |
efb859b4 | 1157 | |
9f637eea GM |
1158 | /* See if the socket exists, and if it's owned by us. */ |
1159 | sock_status = socket_status (server.sun_path); | |
152b6e83 | 1160 | saved_errno = errno; |
5c9659d3 | 1161 | if (sock_status && default_sock) |
efb859b4 | 1162 | { |
9f637eea GM |
1163 | /* Failing that, see if LOGNAME or USER exist and differ from |
1164 | our euid. If so, look for a socket based on the UID | |
1165 | associated with the name. This is reminiscent of the logic | |
1166 | that init_editfns uses to set the global Vuser_full_name. */ | |
e69233c2 | 1167 | |
7ce8671d | 1168 | char *user_name = (char *) egetenv ("LOGNAME"); |
293f9f2a | 1169 | |
9f637eea | 1170 | if (!user_name) |
7ce8671d | 1171 | user_name = (char *) egetenv ("USER"); |
e69233c2 | 1172 | |
9f637eea GM |
1173 | if (user_name) |
1174 | { | |
1175 | struct passwd *pw = getpwnam (user_name); | |
293f9f2a | 1176 | |
9f637eea GM |
1177 | if (pw && (pw->pw_uid != geteuid ())) |
1178 | { | |
1179 | /* We're running under su, apparently. */ | |
0734b0d0 SM |
1180 | socket_name = alloca (100 + strlen (server_name)); |
1181 | sprintf (socket_name, "/tmp/emacs%d/%s", | |
1182 | (int) pw->pw_uid, server_name); | |
5c9659d3 SM |
1183 | |
1184 | if (strlen (socket_name) < sizeof (server.sun_path)) | |
1185 | strcpy (server.sun_path, socket_name); | |
1186 | else | |
1187 | { | |
78da39c6 | 1188 | message (TRUE, "%s: socket-name %s too long\n", |
aa0b6932 | 1189 | progname, socket_name); |
65396510 | 1190 | exit (EXIT_FAILURE); |
5c9659d3 SM |
1191 | } |
1192 | ||
9f637eea | 1193 | sock_status = socket_status (server.sun_path); |
b80bf66e | 1194 | saved_errno = errno; |
9f637eea | 1195 | } |
293f9f2a RS |
1196 | else |
1197 | errno = saved_errno; | |
9f637eea | 1198 | } |
efb859b4 | 1199 | } |
e69233c2 | 1200 | |
aa0b6932 JB |
1201 | switch (sock_status) |
1202 | { | |
1203 | case 1: | |
974b73e8 KL |
1204 | /* There's a socket, but it isn't owned by us. This is OK if |
1205 | we are root. */ | |
1206 | if (0 != geteuid ()) | |
1207 | { | |
1208 | message (TRUE, "%s: Invalid socket owner\n", progname); | |
aa0b6932 | 1209 | return INVALID_SOCKET; |
974b73e8 KL |
1210 | } |
1211 | break; | |
aa0b6932 JB |
1212 | |
1213 | case 2: | |
974b73e8 KL |
1214 | /* `stat' failed */ |
1215 | if (saved_errno == ENOENT) | |
1216 | message (TRUE, | |
1217 | "%s: can't find socket; have you started the server?\n\ | |
45adde32 | 1218 | To start the server in Emacs, type \"M-x server-start\".\n", |
aa0b6932 | 1219 | progname); |
974b73e8 KL |
1220 | else |
1221 | message (TRUE, "%s: can't stat %s: %s\n", | |
aa0b6932 | 1222 | progname, server.sun_path, strerror (saved_errno)); |
974b73e8 | 1223 | return INVALID_SOCKET; |
aa0b6932 | 1224 | } |
efb859b4 | 1225 | } |
46cec291 | 1226 | |
4e23f2ba JB |
1227 | if (connect (s, (struct sockaddr *) &server, strlen (server.sun_path) + 2) |
1228 | < 0) | |
46cec291 | 1229 | { |
42073bfb | 1230 | message (TRUE, "%s: connect: %s\n", progname, strerror (errno)); |
aa0b6932 | 1231 | return INVALID_SOCKET; |
46cec291 | 1232 | } |
23a7488d | 1233 | |
aa0b6932 JB |
1234 | return s; |
1235 | } | |
1236 | #endif /* ! NO_SOCKETS_IN_FILE_SYSTEM */ | |
1237 | ||
1238 | HSOCKET | |
1239 | set_socket () | |
1240 | { | |
b03d27bd | 1241 | HSOCKET s; |
c0f342ab | 1242 | |
b03d27bd | 1243 | INITIALIZE (); |
c0f342ab | 1244 | |
aa0b6932 | 1245 | #ifndef NO_SOCKETS_IN_FILE_SYSTEM |
b03d27bd JB |
1246 | /* Explicit --socket-name argument. */ |
1247 | if (socket_name) | |
46cec291 | 1248 | { |
b03d27bd JB |
1249 | s = set_local_socket (); |
1250 | if ((s != INVALID_SOCKET) || alternate_editor) | |
974b73e8 | 1251 | return s; |
355a326e | 1252 | message (TRUE, "%s: error accessing socket \"%s\"\n", |
974b73e8 | 1253 | progname, socket_name); |
b03d27bd | 1254 | exit (EXIT_FAILURE); |
46cec291 | 1255 | } |
b03d27bd JB |
1256 | #endif |
1257 | ||
1258 | /* Explicit --server-file arg or EMACS_SERVER_FILE variable. */ | |
1259 | if (!server_file) | |
7ce8671d | 1260 | server_file = egetenv ("EMACS_SERVER_FILE"); |
46cec291 | 1261 | |
b03d27bd | 1262 | if (server_file) |
23a7488d | 1263 | { |
b03d27bd JB |
1264 | s = set_tcp_socket (); |
1265 | if ((s != INVALID_SOCKET) || alternate_editor) | |
974b73e8 | 1266 | return s; |
c0f342ab | 1267 | |
78da39c6 | 1268 | message (TRUE, "%s: error accessing server file \"%s\"\n", |
974b73e8 | 1269 | progname, server_file); |
b03d27bd | 1270 | exit (EXIT_FAILURE); |
23a7488d | 1271 | } |
c0f342ab | 1272 | |
b03d27bd JB |
1273 | #ifndef NO_SOCKETS_IN_FILE_SYSTEM |
1274 | /* Implicit local socket. */ | |
1275 | s = set_local_socket (); | |
1276 | if (s != INVALID_SOCKET) | |
1277 | return s; | |
1278 | #endif | |
23a7488d | 1279 | |
b03d27bd JB |
1280 | /* Implicit server file. */ |
1281 | server_file = "server"; | |
1282 | s = set_tcp_socket (); | |
1283 | if ((s != INVALID_SOCKET) || alternate_editor) | |
1284 | return s; | |
1285 | ||
1286 | /* No implicit or explicit socket, and no alternate editor. */ | |
42073bfb | 1287 | message (TRUE, "%s: No socket or alternate editor. Please use:\n\n" |
b03d27bd JB |
1288 | #ifndef NO_SOCKETS_IN_FILE_SYSTEM |
1289 | "\t--socket-name\n" | |
ee6a193c | 1290 | #endif |
b03d27bd JB |
1291 | "\t--server-file (or environment variable EMACS_SERVER_FILE)\n\ |
1292 | \t--alternate-editor (or environment variable ALTERNATE_EDITOR)\n", | |
1293 | progname); | |
1294 | exit (EXIT_FAILURE); | |
aa0b6932 | 1295 | } |
46cec291 | 1296 | |
0e0dced5 JB |
1297 | #ifdef WINDOWSNT |
1298 | FARPROC set_fg; /* Pointer to AllowSetForegroundWindow. */ | |
1299 | FARPROC get_wc; /* Pointer to RealGetWindowClassA. */ | |
1300 | ||
1301 | BOOL CALLBACK | |
1302 | w32_find_emacs_process (hWnd, lParam) | |
1303 | HWND hWnd; | |
1304 | LPARAM lParam; | |
1305 | { | |
1306 | DWORD pid; | |
1307 | char class[6]; | |
1308 | ||
1309 | /* Reject any window not of class "Emacs". */ | |
1310 | if (! get_wc (hWnd, class, sizeof (class)) | |
1311 | || strcmp (class, "Emacs")) | |
1312 | return TRUE; | |
1313 | ||
1314 | /* We only need the process id, not the thread id. */ | |
1315 | (void) GetWindowThreadProcessId (hWnd, &pid); | |
1316 | ||
1317 | /* Not the one we're looking for. */ | |
1318 | if (pid != (DWORD) emacs_pid) return TRUE; | |
1319 | ||
1320 | /* OK, let's raise it. */ | |
1321 | set_fg (emacs_pid); | |
1322 | ||
1323 | /* Stop enumeration. */ | |
1324 | return FALSE; | |
1325 | } | |
1326 | ||
1327 | /* | |
1328 | * Search for a window of class "Emacs" and owned by a process with | |
1329 | * process id = emacs_pid. If found, allow it to grab the focus. | |
1330 | */ | |
1331 | void | |
1332 | w32_give_focus () | |
1333 | { | |
1334 | HMODULE hUser32; | |
1335 | ||
71b8f735 | 1336 | /* It shouldn't happen when dealing with TCP sockets. */ |
0e0dced5 JB |
1337 | if (!emacs_pid) return; |
1338 | ||
1339 | if (!(hUser32 = LoadLibrary ("user32.dll"))) return; | |
1340 | ||
1341 | /* Modern Windows restrict which processes can set the foreground window. | |
1342 | emacsclient can allow Emacs to grab the focus by calling the function | |
1343 | AllowSetForegroundWindow. Unfortunately, older Windows (W95, W98 and | |
1344 | NT) lack this function, so we have to check its availability. */ | |
1345 | if ((set_fg = GetProcAddress (hUser32, "AllowSetForegroundWindow")) | |
1346 | && (get_wc = GetProcAddress (hUser32, "RealGetWindowClassA"))) | |
1347 | EnumWindows (w32_find_emacs_process, (LPARAM) 0); | |
1348 | ||
1349 | FreeLibrary (hUser32); | |
1350 | } | |
1351 | #endif | |
1352 | ||
aa0b6932 JB |
1353 | int |
1354 | main (argc, argv) | |
1355 | int argc; | |
1356 | char **argv; | |
1357 | { | |
aa0b6932 | 1358 | int i, rl, needlf = 0; |
974b73e8 | 1359 | char *cwd, *str; |
aa0b6932 JB |
1360 | char string[BUFSIZ+1]; |
1361 | ||
974b73e8 | 1362 | main_argv = argv; |
aa0b6932 JB |
1363 | progname = argv[0]; |
1364 | ||
1365 | /* Process options. */ | |
1366 | decode_options (argc, argv); | |
1367 | ||
974b73e8 | 1368 | if ((argc - optind < 1) && !eval && !tty && !window_system) |
23a7488d | 1369 | { |
974b73e8 KL |
1370 | message (TRUE, "%s: file name or argument required\n" |
1371 | "Try `%s --help' for more information\n", | |
1372 | progname, progname); | |
aa0b6932 | 1373 | exit (EXIT_FAILURE); |
23a7488d RS |
1374 | } |
1375 | ||
4b7b77f6 | 1376 | if ((emacs_socket = set_socket ()) == INVALID_SOCKET) |
974b73e8 | 1377 | fail (); |
aa0b6932 | 1378 | |
974b73e8 KL |
1379 | |
1380 | cwd = get_current_dir_name (); | |
46cec291 RS |
1381 | if (cwd == 0) |
1382 | { | |
1383 | /* getwd puts message in STRING if it fails. */ | |
974b73e8 KL |
1384 | message (TRUE, "%s: %s\n", progname, |
1385 | "Cannot get current working directory"); | |
819b8f00 | 1386 | fail (); |
46cec291 RS |
1387 | } |
1388 | ||
c66648e0 | 1389 | #ifdef WINDOWSNT |
0e0dced5 | 1390 | w32_give_focus (); |
c66648e0 JB |
1391 | #endif |
1392 | ||
9002956f | 1393 | /* Send over our environment. */ |
59e085e0 KL |
1394 | if (!current_frame) |
1395 | { | |
1396 | extern char **environ; | |
1397 | int i; | |
1398 | for (i = 0; environ[i]; i++) | |
1399 | { | |
1400 | char *name = xstrdup (environ[i]); | |
1401 | char *value = strchr (name, '='); | |
486ba65f JR |
1402 | send_to_emacs (emacs_socket, "-env "); |
1403 | quote_argument (emacs_socket, environ[i]); | |
1404 | send_to_emacs (emacs_socket, " "); | |
59e085e0 KL |
1405 | } |
1406 | } | |
9002956f | 1407 | |
2828d5f9 KL |
1408 | /* Send over our current directory. */ |
1409 | if (!current_frame) | |
1410 | { | |
486ba65f JR |
1411 | send_to_emacs (emacs_socket, "-dir "); |
1412 | quote_argument (emacs_socket, cwd); | |
1413 | send_to_emacs (emacs_socket, "/"); | |
1414 | send_to_emacs (emacs_socket, " "); | |
2828d5f9 KL |
1415 | } |
1416 | ||
6afdd335 | 1417 | retry: |
5212210c | 1418 | if (nowait) |
486ba65f | 1419 | send_to_emacs (emacs_socket, "-nowait "); |
292d74a3 | 1420 | |
92071250 | 1421 | if (current_frame) |
486ba65f | 1422 | send_to_emacs (emacs_socket, "-current-frame "); |
c0f342ab | 1423 | |
30be2360 | 1424 | if (display) |
87209357 | 1425 | { |
486ba65f JR |
1426 | send_to_emacs (emacs_socket, "-display "); |
1427 | quote_argument (emacs_socket, display); | |
1428 | send_to_emacs (emacs_socket, " "); | |
87209357 | 1429 | } |
30be2360 | 1430 | |
77134727 | 1431 | if (tty) |
9628b887 | 1432 | { |
7ce8671d | 1433 | char *type = egetenv ("TERM"); |
b2ff54a0 JR |
1434 | char *tty_name = NULL; |
1435 | #ifndef WINDOWSNT | |
1436 | tty_name = ttyname (fileno (stdin)); | |
1437 | #endif | |
0b0d3e0b | 1438 | |
4d553a13 | 1439 | if (! tty_name) |
2fc0cf2a | 1440 | { |
974b73e8 | 1441 | message (TRUE, "%s: could not get terminal name\n", progname); |
2fc0cf2a KL |
1442 | fail (); |
1443 | } | |
1444 | ||
1445 | if (! type) | |
1446 | { | |
974b73e8 | 1447 | message (TRUE, "%s: please set the TERM variable to your terminal type\n", |
2fc0cf2a KL |
1448 | progname); |
1449 | fail (); | |
1450 | } | |
1451 | ||
1452 | if (! strcmp (type, "eterm")) | |
1453 | { | |
1454 | /* This causes nasty, MULTI_KBOARD-related input lockouts. */ | |
974b73e8 | 1455 | message (TRUE, "%s: opening a frame in an Emacs term buffer" |
2fc0cf2a KL |
1456 | " is not supported\n", progname); |
1457 | fail (); | |
1458 | } | |
b2ff54a0 | 1459 | #if !defined (NO_SOCKETS_IN_FILE_SYSTEM) |
4d553a13 | 1460 | init_signals (); |
b2ff54a0 | 1461 | #endif |
0b0d3e0b | 1462 | |
486ba65f JR |
1463 | send_to_emacs (emacs_socket, "-tty "); |
1464 | quote_argument (emacs_socket, tty_name); | |
1465 | send_to_emacs (emacs_socket, " "); | |
1466 | quote_argument (emacs_socket, type); | |
1467 | send_to_emacs (emacs_socket, " "); | |
9628b887 | 1468 | } |
77134727 KL |
1469 | |
1470 | if (window_system) | |
486ba65f | 1471 | send_to_emacs (emacs_socket, "-window-system "); |
0b0d3e0b | 1472 | |
87209357 | 1473 | if ((argc - optind > 0)) |
5212210c | 1474 | { |
87209357 | 1475 | for (i = optind; i < argc; i++) |
46cec291 | 1476 | { |
0b0d3e0b KL |
1477 | int relative = 0; |
1478 | ||
87209357 | 1479 | if (eval) |
0b0d3e0b | 1480 | { |
974b73e8 | 1481 | /* Don't prepend cwd or anything like that. */ |
486ba65f JR |
1482 | send_to_emacs (emacs_socket, "-eval "); |
1483 | quote_argument (emacs_socket, argv[i]); | |
1484 | send_to_emacs (emacs_socket, " "); | |
0b0d3e0b KL |
1485 | continue; |
1486 | } | |
1487 | ||
1488 | if (*argv[i] == '+') | |
1489 | { | |
87209357 EZ |
1490 | char *p = argv[i] + 1; |
1491 | while (isdigit ((unsigned char) *p) || *p == ':') p++; | |
0b0d3e0b KL |
1492 | if (*p == 0) |
1493 | { | |
486ba65f JR |
1494 | send_to_emacs (emacs_socket, "-position "); |
1495 | quote_argument (emacs_socket, argv[i]); | |
1496 | send_to_emacs (emacs_socket, " "); | |
0b0d3e0b KL |
1497 | continue; |
1498 | } | |
1499 | else | |
1500 | relative = 1; | |
1501 | } | |
50f271cb JB |
1502 | else if (! file_name_absolute_p (argv[i])) |
1503 | #ifndef WINDOWSNT | |
1504 | relative = 1; | |
1505 | #else | |
1506 | /* Call GetFullPathName so filenames of the form X:Y, where X is | |
1507 | a valid drive designator, are interpreted as drive:path, not | |
1508 | file:stream, and treated as absolute. | |
1509 | The user can still pass a file:stream if desired (for example, | |
31e25350 | 1510 | .\X:Y), but it is not very useful, as Emacs currently does a |
50f271cb JB |
1511 | very bad job of dealing wih NTFS streams. */ |
1512 | { | |
1513 | char *filename = (char *) xmalloc (MAX_PATH); | |
1514 | DWORD size; | |
1515 | ||
1516 | size = GetFullPathName (argv[i], MAX_PATH, filename, NULL); | |
1517 | if (size > 0 && size < MAX_PATH) | |
1518 | argv[i] = filename; | |
1519 | else | |
1520 | { | |
1521 | relative = 1; | |
1522 | free (filename); | |
1523 | } | |
1524 | } | |
1525 | #endif | |
0b0d3e0b | 1526 | |
486ba65f | 1527 | send_to_emacs (emacs_socket, "-file "); |
0b0d3e0b KL |
1528 | if (relative) |
1529 | { | |
486ba65f JR |
1530 | quote_argument (emacs_socket, cwd); |
1531 | send_to_emacs (emacs_socket, "/"); | |
0b0d3e0b | 1532 | } |
486ba65f JR |
1533 | quote_argument (emacs_socket, argv[i]); |
1534 | send_to_emacs (emacs_socket, " "); | |
0b0d3e0b | 1535 | } |
46cec291 | 1536 | } |
87209357 EZ |
1537 | else |
1538 | { | |
77134727 | 1539 | if (!tty && !window_system) |
9628b887 KL |
1540 | { |
1541 | while ((str = fgets (string, BUFSIZ, stdin))) | |
1542 | { | |
0b0d3e0b | 1543 | if (eval) |
486ba65f | 1544 | send_to_emacs (emacs_socket, "-eval "); |
0b0d3e0b | 1545 | else |
486ba65f JR |
1546 | send_to_emacs (emacs_socket, "-file "); |
1547 | quote_argument (emacs_socket, str); | |
9628b887 | 1548 | } |
486ba65f | 1549 | send_to_emacs (emacs_socket, " "); |
9628b887 | 1550 | } |
87209357 | 1551 | } |
0b0d3e0b | 1552 | |
486ba65f | 1553 | send_to_emacs (emacs_socket, "\n"); |
46cec291 | 1554 | |
fc2040c0 KL |
1555 | /* Wait for an answer. */ |
1556 | if (!eval && !tty && !nowait) | |
30be2360 SM |
1557 | { |
1558 | printf ("Waiting for Emacs..."); | |
1559 | needlf = 2; | |
1560 | } | |
46cec291 | 1561 | fflush (stdout); |
0b0d3e0b | 1562 | fsync (1); |
46cec291 | 1563 | |
3cf8c6aa | 1564 | /* Now, wait for an answer and print any messages. */ |
4b7b77f6 | 1565 | while ((rl = recv (emacs_socket, string, BUFSIZ, 0)) > 0) |
3cf8c6aa | 1566 | { |
974b73e8 KL |
1567 | char *p; |
1568 | string[rl] = '\0'; | |
1569 | ||
1570 | p = string + strlen (string) - 1; | |
1571 | while (p > string && *p == '\n') | |
0b0d3e0b KL |
1572 | *p-- = 0; |
1573 | ||
31fa6595 | 1574 | if (strprefix ("-emacs-pid ", string)) |
4d553a13 | 1575 | { |
6afdd335 | 1576 | /* -emacs-pid PID: The process id of the Emacs process. */ |
77134727 KL |
1577 | emacs_pid = strtol (string + strlen ("-emacs-pid"), NULL, 10); |
1578 | } | |
974b73e8 | 1579 | else if (strprefix ("-window-system-unsupported ", string)) |
6afdd335 KL |
1580 | { |
1581 | /* -window-system-unsupported: Emacs was compiled without X | |
1582 | support. Try again on the terminal. */ | |
1583 | window_system = 0; | |
1584 | nowait = 0; | |
1585 | tty = 1; | |
1586 | goto retry; | |
1587 | } | |
974b73e8 | 1588 | else if (strprefix ("-print ", string)) |
77134727 | 1589 | { |
6afdd335 | 1590 | /* -print STRING: Print STRING on the terminal. */ |
974b73e8 | 1591 | str = unquote_argument (string + strlen ("-print ")); |
0b0d3e0b | 1592 | if (needlf) |
77134727 | 1593 | printf ("\n"); |
0b0d3e0b KL |
1594 | printf ("%s", str); |
1595 | needlf = str[0] == '\0' ? needlf : str[strlen (str) - 1] != '\n'; | |
77134727 | 1596 | } |
974b73e8 | 1597 | else if (strprefix ("-error ", string)) |
77134727 | 1598 | { |
6afdd335 | 1599 | /* -error DESCRIPTION: Signal an error on the terminal. */ |
974b73e8 | 1600 | str = unquote_argument (string + strlen ("-error ")); |
0b0d3e0b KL |
1601 | if (needlf) |
1602 | printf ("\n"); | |
974b73e8 | 1603 | fprintf (stderr, "*ERROR*: %s", str); |
0b0d3e0b KL |
1604 | needlf = str[0] == '\0' ? needlf : str[strlen (str) - 1] != '\n'; |
1605 | } | |
c801ad51 | 1606 | #ifdef SIGSTOP |
382707ec | 1607 | else if (strprefix ("-suspend ", string)) |
0b0d3e0b | 1608 | { |
6afdd335 | 1609 | /* -suspend: Suspend this terminal, i.e., stop the process. */ |
0b0d3e0b | 1610 | if (needlf) |
77134727 | 1611 | printf ("\n"); |
0b0d3e0b KL |
1612 | needlf = 0; |
1613 | kill (0, SIGSTOP); | |
4d553a13 | 1614 | } |
b2ff54a0 | 1615 | #endif |
4d553a13 KL |
1616 | else |
1617 | { | |
6afdd335 | 1618 | /* Unknown command. */ |
0b0d3e0b | 1619 | if (needlf) |
4d553a13 | 1620 | printf ("\n"); |
974b73e8 KL |
1621 | printf ("*ERROR*: Unknown message: %s", string); |
1622 | needlf = string[0] == '\0' ? needlf : string[strlen (string) - 1] != '\n'; | |
4d553a13 | 1623 | } |
3cf8c6aa SM |
1624 | } |
1625 | ||
1626 | if (needlf) | |
1627 | printf ("\n"); | |
1628 | fflush (stdout); | |
0b0d3e0b | 1629 | fsync (1); |
23a7488d | 1630 | |
4b7b77f6 | 1631 | CLOSE_SOCKET (emacs_socket); |
65396510 | 1632 | return EXIT_SUCCESS; |
46cec291 RS |
1633 | } |
1634 | ||
1e7823d0 | 1635 | #endif /* HAVE_SOCKETS && HAVE_INET_SOCKETS */ |
aa0b6932 | 1636 | |
27711600 RM |
1637 | \f |
1638 | #ifndef HAVE_STRERROR | |
1639 | char * | |
1640 | strerror (errnum) | |
1641 | int errnum; | |
1642 | { | |
1643 | extern char *sys_errlist[]; | |
1644 | extern int sys_nerr; | |
1645 | ||
1646 | if (errnum >= 0 && errnum < sys_nerr) | |
1647 | return sys_errlist[errnum]; | |
1648 | return (char *) "Unknown error"; | |
1649 | } | |
1650 | ||
1651 | #endif /* ! HAVE_STRERROR */ | |
ab5796a9 MB |
1652 | |
1653 | /* arch-tag: f39bb9c4-73eb-477e-896d-50832e2ca9a7 | |
1654 | (do not change this comment) */ | |
65396510 TTN |
1655 | |
1656 | /* emacsclient.c ends here */ |