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