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 | |
18d2ad29 | 50 | # include <arpa/inet.h> |
448d4085 | 51 | |
e35fc962 | 52 | # define INVALID_SOCKET -1 |
aa0b6932 JB |
53 | # define HSOCKET int |
54 | # define CLOSE_SOCKET close | |
aa0b6932 | 55 | # define INITIALIZE() |
411b80a5 | 56 | |
c3f995a2 JB |
57 | # define EMACS_DAEMON |
58 | ||
411b80a5 | 59 | #endif /* !WINDOWSNT */ |
aa0b6932 | 60 | |
4e23f2ba | 61 | #undef signal |
46cec291 | 62 | |
42073bfb | 63 | #include <stdarg.h> |
e69233c2 | 64 | #include <ctype.h> |
8f9aaa0a | 65 | #include <stdio.h> |
aa0b6932 | 66 | #include "getopt.h" |
79f13bba DL |
67 | #ifdef HAVE_UNISTD_H |
68 | #include <unistd.h> | |
69 | #endif | |
8f9aaa0a | 70 | |
aa0b6932 JB |
71 | #ifdef WINDOWSNT |
72 | # include <io.h> | |
73 | #else /* not WINDOWSNT */ | |
9f637eea | 74 | # include <pwd.h> |
aa0b6932 | 75 | #endif /* not WINDOWSNT */ |
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 | |
bc558f3e JB |
116 | |
117 | /* Additional space when allocating buffers for filenames, etc. */ | |
118 | #define EXTRA_SPACE 100 | |
119 | ||
aa0b6932 | 120 | \f |
8f9aaa0a RS |
121 | /* Name used to invoke this program. */ |
122 | char *progname; | |
123 | ||
0a125897 KL |
124 | /* The second argument to main. */ |
125 | char **main_argv; | |
126 | ||
749ae770 | 127 | /* Nonzero means don't wait for a response from Emacs. --no-wait. */ |
8f9aaa0a RS |
128 | int nowait = 0; |
129 | ||
30be2360 SM |
130 | /* Nonzero means args are expressions to be evaluated. --eval. */ |
131 | int eval = 0; | |
132 | ||
31fa6595 SM |
133 | /* Nonzero means don't open a new frame. Inverse of --create-frame. */ |
134 | int current_frame = 1; | |
92071250 | 135 | |
30be2360 SM |
136 | /* The display on which Emacs should work. --display. */ |
137 | char *display = NULL; | |
138 | ||
9628b887 | 139 | /* Nonzero means open a new Emacs frame on the current terminal. */ |
77134727 | 140 | int tty = 0; |
9628b887 | 141 | |
30be2360 SM |
142 | /* If non-NULL, the name of an editor to fallback to if the server |
143 | is not running. --alternate-editor. */ | |
b03d27bd | 144 | const char *alternate_editor = NULL; |
30be2360 | 145 | |
3db926be | 146 | /* If non-NULL, the filename of the UNIX socket. */ |
254107e4 RS |
147 | char *socket_name = NULL; |
148 | ||
aa0b6932 JB |
149 | /* If non-NULL, the filename of the authentication file. */ |
150 | char *server_file = NULL; | |
151 | ||
c66648e0 JB |
152 | /* PID of the Emacs server process. */ |
153 | int emacs_pid = 0; | |
154 | ||
2381d38d | 155 | void print_help_and_exit () NO_RETURN; |
7f3bff3e | 156 | |
8f9aaa0a RS |
157 | struct option longopts[] = |
158 | { | |
749ae770 | 159 | { "no-wait", no_argument, NULL, 'n' }, |
30be2360 | 160 | { "eval", no_argument, NULL, 'e' }, |
8f9aaa0a RS |
161 | { "help", no_argument, NULL, 'H' }, |
162 | { "version", no_argument, NULL, 'V' }, | |
b28c910d | 163 | { "tty", no_argument, NULL, 't' }, |
dc1cd5f7 | 164 | { "nw", no_argument, NULL, 't' }, |
31fa6595 | 165 | { "create-frame", no_argument, NULL, 'c' }, |
3cf8c6aa | 166 | { "alternate-editor", required_argument, NULL, 'a' }, |
b03d27bd | 167 | #ifndef NO_SOCKETS_IN_FILE_SYSTEM |
254107e4 | 168 | { "socket-name", required_argument, NULL, 's' }, |
b03d27bd | 169 | #endif |
aa0b6932 | 170 | { "server-file", required_argument, NULL, 'f' }, |
0ebec7d3 | 171 | #ifndef WINDOWSNT |
30be2360 | 172 | { "display", required_argument, NULL, 'd' }, |
0ebec7d3 | 173 | #endif |
30be2360 | 174 | { 0, 0, 0, 0 } |
8f9aaa0a RS |
175 | }; |
176 | ||
974b73e8 KL |
177 | \f |
178 | /* Like malloc but get fatal error if memory is exhausted. */ | |
179 | ||
180 | long * | |
181 | xmalloc (size) | |
182 | unsigned int size; | |
183 | { | |
184 | long *result = (long *) malloc (size); | |
185 | if (result == NULL) | |
186 | { | |
187 | perror ("malloc"); | |
188 | exit (EXIT_FAILURE); | |
189 | } | |
190 | return result; | |
191 | } | |
192 | ||
193 | /* Like strdup but get a fatal error if memory is exhausted. */ | |
194 | ||
195 | char * | |
196 | xstrdup (const char *s) | |
197 | { | |
198 | char *result = strdup (s); | |
199 | if (result == NULL) | |
200 | { | |
201 | perror ("strdup"); | |
202 | exit (EXIT_FAILURE); | |
203 | } | |
204 | return result; | |
205 | } | |
206 | ||
207 | /* From sysdep.c */ | |
208 | #if !defined (HAVE_GET_CURRENT_DIR_NAME) || defined (BROKEN_GET_CURRENT_DIR_NAME) | |
209 | ||
cb06b8dc SM |
210 | /* From lisp.h */ |
211 | #ifndef DIRECTORY_SEP | |
212 | #define DIRECTORY_SEP '/' | |
213 | #endif | |
214 | #ifndef IS_DIRECTORY_SEP | |
215 | #define IS_DIRECTORY_SEP(_c_) ((_c_) == DIRECTORY_SEP) | |
216 | #endif | |
217 | #ifndef IS_DEVICE_SEP | |
218 | #ifndef DEVICE_SEP | |
219 | #define IS_DEVICE_SEP(_c_) 0 | |
220 | #else | |
221 | #define IS_DEVICE_SEP(_c_) ((_c_) == DEVICE_SEP) | |
222 | #endif | |
223 | #endif | |
224 | #ifndef IS_ANY_SEP | |
225 | #define IS_ANY_SEP(_c_) (IS_DIRECTORY_SEP (_c_)) | |
226 | #endif | |
227 | ||
228 | ||
974b73e8 | 229 | /* Return the current working directory. Returns NULL on errors. |
5ab73228 | 230 | Any other returned value must be freed with free. This is used |
974b73e8 KL |
231 | only when get_current_dir_name is not defined on the system. */ |
232 | char* | |
233 | get_current_dir_name () | |
234 | { | |
235 | char *buf; | |
236 | char *pwd; | |
237 | struct stat dotstat, pwdstat; | |
238 | /* If PWD is accurate, use it instead of calling getwd. PWD is | |
239 | sometimes a nicer name, and using it may avoid a fatal error if a | |
240 | parent directory is searchable but not readable. */ | |
7ce8671d | 241 | if ((pwd = egetenv ("PWD")) != 0 |
974b73e8 KL |
242 | && (IS_DIRECTORY_SEP (*pwd) || (*pwd && IS_DEVICE_SEP (pwd[1]))) |
243 | && stat (pwd, &pwdstat) == 0 | |
244 | && stat (".", &dotstat) == 0 | |
245 | && dotstat.st_ino == pwdstat.st_ino | |
246 | && dotstat.st_dev == pwdstat.st_dev | |
247 | #ifdef MAXPATHLEN | |
248 | && strlen (pwd) < MAXPATHLEN | |
249 | #endif | |
250 | ) | |
251 | { | |
252 | buf = (char *) xmalloc (strlen (pwd) + 1); | |
253 | if (!buf) | |
254 | return NULL; | |
255 | strcpy (buf, pwd); | |
256 | } | |
257 | #ifdef HAVE_GETCWD | |
258 | else | |
259 | { | |
260 | size_t buf_size = 1024; | |
261 | buf = (char *) xmalloc (buf_size); | |
262 | if (!buf) | |
263 | return NULL; | |
264 | for (;;) | |
265 | { | |
266 | if (getcwd (buf, buf_size) == buf) | |
267 | break; | |
268 | if (errno != ERANGE) | |
269 | { | |
270 | int tmp_errno = errno; | |
271 | free (buf); | |
272 | errno = tmp_errno; | |
273 | return NULL; | |
274 | } | |
275 | buf_size *= 2; | |
276 | buf = (char *) realloc (buf, buf_size); | |
277 | if (!buf) | |
278 | return NULL; | |
279 | } | |
280 | } | |
281 | #else | |
282 | else | |
283 | { | |
284 | /* We need MAXPATHLEN here. */ | |
285 | buf = (char *) xmalloc (MAXPATHLEN + 1); | |
286 | if (!buf) | |
287 | return NULL; | |
288 | if (getwd (buf) == NULL) | |
289 | { | |
290 | int tmp_errno = errno; | |
291 | free (buf); | |
292 | errno = tmp_errno; | |
293 | return NULL; | |
294 | } | |
295 | } | |
296 | #endif | |
297 | return buf; | |
298 | } | |
299 | #endif | |
300 | ||
42073bfb | 301 | #ifdef WINDOWSNT |
7ce8671d JB |
302 | |
303 | #define REG_ROOT "SOFTWARE\\GNU\\Emacs" | |
304 | ||
305 | /* Retrieve an environment variable from the Emacs subkeys of the registry. | |
306 | Return NULL if the variable was not found, or it was empty. | |
307 | This code is based on w32_get_resource (w32.c). */ | |
308 | char * | |
309 | w32_get_resource (predefined, key, type) | |
310 | HKEY predefined; | |
311 | char *key; | |
312 | LPDWORD type; | |
313 | { | |
314 | HKEY hrootkey = NULL; | |
315 | char *result = NULL; | |
316 | DWORD cbData; | |
317 | ||
318 | if (RegOpenKeyEx (predefined, REG_ROOT, 0, KEY_READ, &hrootkey) == ERROR_SUCCESS) | |
319 | { | |
320 | if (RegQueryValueEx (hrootkey, key, NULL, NULL, NULL, &cbData) == ERROR_SUCCESS) | |
321 | { | |
322 | result = (char *) xmalloc (cbData); | |
323 | ||
bc558f3e JB |
324 | if ((RegQueryValueEx (hrootkey, key, NULL, type, result, &cbData) != ERROR_SUCCESS) |
325 | || (*result == 0)) | |
7ce8671d JB |
326 | { |
327 | free (result); | |
328 | result = NULL; | |
329 | } | |
330 | } | |
331 | ||
332 | RegCloseKey (hrootkey); | |
333 | } | |
334 | ||
335 | return result; | |
336 | } | |
337 | ||
338 | /* | |
339 | getenv wrapper for Windows | |
340 | ||
341 | This is needed to duplicate Emacs's behavior, which is to look for enviroment | |
342 | variables in the registry if they don't appear in the environment. | |
343 | */ | |
344 | char * | |
345 | w32_getenv (envvar) | |
346 | char *envvar; | |
347 | { | |
348 | char *value; | |
349 | DWORD dwType; | |
350 | ||
351 | if (value = getenv (envvar)) | |
352 | /* Found in the environment. */ | |
353 | return value; | |
354 | ||
355 | if (! (value = w32_get_resource (HKEY_CURRENT_USER, envvar, &dwType)) && | |
356 | ! (value = w32_get_resource (HKEY_LOCAL_MACHINE, envvar, &dwType))) | |
d41784ee EZ |
357 | { |
358 | /* "w32console" is what Emacs on Windows uses for tty-type under -nw. */ | |
359 | if (strcmp (envvar, "TERM") == 0) | |
360 | return xstrdup ("w32console"); | |
361 | /* Found neither in the environment nor in the registry. */ | |
362 | return NULL; | |
363 | } | |
7ce8671d JB |
364 | |
365 | if (dwType == REG_SZ) | |
366 | /* Registry; no need to expand. */ | |
367 | return value; | |
368 | ||
369 | if (dwType == REG_EXPAND_SZ) | |
370 | { | |
371 | DWORD size; | |
372 | ||
373 | if (size = ExpandEnvironmentStrings (value, NULL, 0)) | |
374 | { | |
375 | char *buffer = (char *) xmalloc (size); | |
376 | if (ExpandEnvironmentStrings (value, buffer, size)) | |
377 | { | |
378 | /* Found and expanded. */ | |
379 | free (value); | |
380 | return buffer; | |
381 | } | |
382 | ||
383 | /* Error expanding. */ | |
384 | free (buffer); | |
385 | } | |
386 | } | |
387 | ||
388 | /* Not the right type, or not correctly expanded. */ | |
389 | free (value); | |
390 | return NULL; | |
391 | } | |
392 | ||
42073bfb | 393 | int |
f0384499 | 394 | w32_window_app () |
42073bfb JB |
395 | { |
396 | static int window_app = -1; | |
397 | char szTitle[MAX_PATH]; | |
398 | ||
399 | if (window_app < 0) | |
dbf60b07 JR |
400 | { |
401 | /* Checking for STDOUT does not work; it's a valid handle also in | |
402 | nonconsole apps. Testing for the console title seems to work. */ | |
403 | window_app = (GetConsoleTitleA (szTitle, MAX_PATH) == 0); | |
404 | if (window_app) | |
405 | InitCommonControls(); | |
406 | } | |
42073bfb JB |
407 | |
408 | return window_app; | |
409 | } | |
105faa84 DN |
410 | |
411 | /* | |
cb06b8dc | 412 | execvp wrapper for Windows. Quotes arguments with embedded spaces. |
105faa84 DN |
413 | |
414 | This is necessary due to the broken implementation of exec* routines in | |
415 | the Microsoft libraries: they concatenate the arguments together without | |
416 | quoting special characters, and pass the result to CreateProcess, with | |
417 | predictably bad results. By contrast, Posix execvp passes the arguments | |
418 | directly into the argv array of the child process. | |
419 | */ | |
420 | int | |
421 | w32_execvp (path, argv) | |
422 | char *path; | |
423 | char **argv; | |
424 | { | |
425 | int i; | |
426 | ||
427 | /* Required to allow a .BAT script as alternate editor. */ | |
428 | argv[0] = (char *) alternate_editor; | |
429 | ||
430 | for (i = 0; argv[i]; i++) | |
431 | if (strchr (argv[i], ' ')) | |
432 | { | |
433 | char *quoted = alloca (strlen (argv[i]) + 3); | |
434 | sprintf (quoted, "\"%s\"", argv[i]); | |
435 | argv[i] = quoted; | |
436 | } | |
437 | ||
438 | return execvp (path, argv); | |
439 | } | |
440 | ||
441 | #undef execvp | |
442 | #define execvp w32_execvp | |
443 | ||
d41784ee EZ |
444 | /* Emulation of ttyname for Windows. */ |
445 | char * | |
446 | ttyname (int fd) | |
447 | { | |
448 | return "CONOUT$"; | |
449 | } | |
450 | ||
105faa84 | 451 | #endif /* WINDOWSNT */ |
42073bfb | 452 | |
f387c1ee JB |
453 | /* Display a normal or error message. |
454 | On Windows, use a message box if compiled as a Windows app. */ | |
42073bfb JB |
455 | void |
456 | message (int is_error, char *message, ...) | |
457 | { | |
c66648e0 | 458 | char msg [2048]; |
42073bfb JB |
459 | va_list args; |
460 | ||
461 | va_start (args, message); | |
42073bfb JB |
462 | vsprintf (msg, message, args); |
463 | va_end (args); | |
464 | ||
465 | #ifdef WINDOWSNT | |
466 | if (w32_window_app ()) | |
467 | { | |
468 | if (is_error) | |
469 | MessageBox (NULL, msg, "Emacsclient ERROR", MB_ICONERROR); | |
470 | else | |
471 | MessageBox (NULL, msg, "Emacsclient", MB_ICONINFORMATION); | |
472 | } | |
473 | else | |
474 | #endif | |
9219db75 JB |
475 | { |
476 | FILE *f = is_error ? stderr : stdout; | |
477 | ||
478 | fputs (msg, f); | |
479 | fflush (f); | |
480 | } | |
42073bfb JB |
481 | } |
482 | ||
8f9aaa0a | 483 | /* Decode the options from argv and argc. |
5212210c | 484 | The global variable `optind' will say how many arguments we used up. */ |
8f9aaa0a | 485 | |
5212210c | 486 | void |
8f9aaa0a RS |
487 | decode_options (argc, argv) |
488 | int argc; | |
489 | char **argv; | |
490 | { | |
7ce8671d | 491 | alternate_editor = egetenv ("ALTERNATE_EDITOR"); |
0ea5797a | 492 | |
8f9aaa0a RS |
493 | while (1) |
494 | { | |
dc1cd5f7 | 495 | int opt = getopt_long_only (argc, argv, |
b03d27bd | 496 | #ifndef NO_SOCKETS_IN_FILE_SYSTEM |
974b73e8 | 497 | "VHnea:s:f:d:tc", |
b03d27bd | 498 | #else |
974b73e8 | 499 | "VHnea:f:d:tc", |
b03d27bd | 500 | #endif |
974b73e8 | 501 | longopts, 0); |
8f9aaa0a RS |
502 | |
503 | if (opt == EOF) | |
504 | break; | |
505 | ||
506 | switch (opt) | |
507 | { | |
508 | case 0: | |
509 | /* If getopt returns 0, then it has already processed a | |
510 | long-named option. We should do nothing. */ | |
511 | break; | |
e69233c2 | 512 | |
97e3214d GM |
513 | case 'a': |
514 | alternate_editor = optarg; | |
515 | break; | |
e69233c2 | 516 | |
b03d27bd | 517 | #ifndef NO_SOCKETS_IN_FILE_SYSTEM |
254107e4 RS |
518 | case 's': |
519 | socket_name = optarg; | |
520 | break; | |
b03d27bd | 521 | #endif |
254107e4 | 522 | |
aa0b6932 JB |
523 | case 'f': |
524 | server_file = optarg; | |
525 | break; | |
254107e4 | 526 | |
0ea5797a SM |
527 | /* We used to disallow this argument in w32, but it seems better |
528 | to allow it, for the occasional case where the user is | |
529 | connecting with a w32 client to a server compiled with X11 | |
530 | support. */ | |
30be2360 SM |
531 | case 'd': |
532 | display = optarg; | |
533 | break; | |
534 | ||
8f9aaa0a RS |
535 | case 'n': |
536 | nowait = 1; | |
537 | break; | |
538 | ||
30be2360 SM |
539 | case 'e': |
540 | eval = 1; | |
541 | break; | |
542 | ||
8f9aaa0a | 543 | case 'V': |
42073bfb | 544 | message (FALSE, "emacsclient %s\n", VERSION); |
65396510 | 545 | exit (EXIT_SUCCESS); |
8f9aaa0a | 546 | break; |
46cec291 | 547 | |
819b8f00 | 548 | case 't': |
77134727 | 549 | tty = 1; |
c1b8e896 | 550 | current_frame = 0; |
77134727 KL |
551 | break; |
552 | ||
e5299d8d | 553 | case 'c': |
31fa6595 | 554 | current_frame = 0; |
9628b887 | 555 | break; |
0b0d3e0b | 556 | |
8f9aaa0a | 557 | case 'H': |
8f9aaa0a | 558 | print_help_and_exit (); |
20c396e8 JB |
559 | break; |
560 | ||
561 | default: | |
42073bfb | 562 | message (TRUE, "Try `%s --help' for more information\n", progname); |
65396510 | 563 | exit (EXIT_FAILURE); |
20c396e8 | 564 | break; |
8f9aaa0a RS |
565 | } |
566 | } | |
9628b887 | 567 | |
273b9028 CY |
568 | /* If the -c option is used (without -t) and no --display argument |
569 | is provided, try $DISPLAY. | |
570 | Without the -c option, we used to set `display' to $DISPLAY by | |
571 | default, but this changed the default behavior and is sometimes | |
572 | inconvenient. So we force users to use "--display $DISPLAY" if | |
573 | they want Emacs to connect to their current display. */ | |
09317bf4 | 574 | if (!current_frame && !tty && !display) |
9997dc15 SM |
575 | display = egetenv ("DISPLAY"); |
576 | ||
273b9028 | 577 | /* A null-string display is invalid. */ |
0ea5797a SM |
578 | if (display && strlen (display) == 0) |
579 | display = NULL; | |
580 | ||
273b9028 CY |
581 | /* If no display is available, new frames are tty frames. */ |
582 | if (!current_frame && !display) | |
92071250 | 583 | tty = 1; |
c0f342ab | 584 | |
b8ccaf6f | 585 | /* --no-wait implies --current-frame on ttys when there are file |
273b9028 | 586 | arguments or expressions given. */ |
b8ccaf6f | 587 | if (nowait && tty && argc - optind > 0) |
92071250 | 588 | current_frame = 1; |
8f9aaa0a RS |
589 | } |
590 | ||
974b73e8 | 591 | \f |
7f3bff3e | 592 | void |
8f9aaa0a RS |
593 | print_help_and_exit () |
594 | { | |
c0f342ab JB |
595 | /* Spaces and tabs are significant in this message; they're chosen so the |
596 | message aligns properly both in a tty and in a Windows message box. | |
597 | Please try to preserve them; otherwise the output is very hard to read | |
598 | when using emacsclientw. */ | |
42073bfb | 599 | message (FALSE, |
974b73e8 | 600 | "Usage: %s [OPTIONS] FILE...\n\ |
30be2360 SM |
601 | Tell the Emacs server to visit the specified files.\n\ |
602 | Every FILE can be either just a FILENAME or [+LINE[:COLUMN]] FILENAME.\n\ | |
20c396e8 | 603 | \n\ |
30be2360 | 604 | The following OPTIONS are accepted:\n\ |
c0f342ab JB |
605 | -V, --version Just print version info and return\n\ |
606 | -H, --help Print this usage information message\n\ | |
dc1cd5f7 | 607 | -nw, -t, --tty Open a new Emacs frame on the current terminal\n\ |
c4b858e3 | 608 | -c, --create-frame Create a new frame instead of trying to\n\ |
c0f342ab JB |
609 | use the current Emacs frame\n\ |
610 | -e, --eval Evaluate the FILE arguments as ELisp expressions\n\ | |
d07529f3 JB |
611 | -n, --no-wait Don't wait for the server to return\n\ |
612 | -d, --display=DISPLAY Visit the file in the given display\n" | |
aa0b6932 JB |
613 | #ifndef NO_SOCKETS_IN_FILE_SYSTEM |
614 | "-s, --socket-name=FILENAME\n\ | |
c0f342ab | 615 | Set filename of the UNIX socket for communication\n" |
aa0b6932 JB |
616 | #endif |
617 | "-f, --server-file=FILENAME\n\ | |
c0f342ab | 618 | Set filename of the TCP authentication file\n\ |
30be2360 | 619 | -a, --alternate-editor=EDITOR\n\ |
c3f995a2 JB |
620 | Editor to fallback to if the server is not running\n" |
621 | #ifdef EMACS_DAEMON | |
622 | " If EDITOR is the empty string, start Emacs in daemon\n\ | |
623 | mode and try connecting again\n" | |
624 | #endif | |
625 | "\n\ | |
30be2360 | 626 | Report bugs to bug-gnu-emacs@gnu.org.\n", progname); |
65396510 | 627 | exit (EXIT_SUCCESS); |
8f9aaa0a | 628 | } |
5212210c | 629 | |
aa0b6932 JB |
630 | /* |
631 | Try to run a different command, or --if no alternate editor is | |
632 | defined-- exit with an errorcode. | |
cb06b8dc | 633 | Uses argv, but gets it from the global variable main_argv. |
aa0b6932 JB |
634 | */ |
635 | void | |
974b73e8 | 636 | fail (void) |
9002956f | 637 | { |
aa0b6932 | 638 | if (alternate_editor) |
9002956f | 639 | { |
aa0b6932 | 640 | int i = optind - 1; |
4472aef4 | 641 | |
974b73e8 | 642 | execvp (alternate_editor, main_argv + i); |
42073bfb | 643 | message (TRUE, "%s: error executing alternate editor \"%s\"\n", |
974b73e8 | 644 | progname, alternate_editor); |
9002956f | 645 | } |
aa0b6932 | 646 | exit (EXIT_FAILURE); |
9002956f KL |
647 | } |
648 | ||
aa0b6932 | 649 | \f |
1e7823d0 | 650 | #if !defined (HAVE_SOCKETS) || !defined (HAVE_INET_SOCKETS) |
9002956f | 651 | |
aa0b6932 JB |
652 | int |
653 | main (argc, argv) | |
654 | int argc; | |
655 | char **argv; | |
9002956f | 656 | { |
974b73e8 KL |
657 | main_argv = argv; |
658 | progname = argv[0]; | |
659 | message (TRUE, "%s: Sorry, the Emacs server is supported only\n" | |
c0f342ab | 660 | "on systems with Berkeley sockets.\n", |
aa0b6932 | 661 | argv[0]); |
974b73e8 | 662 | fail (); |
9002956f KL |
663 | } |
664 | ||
1e7823d0 | 665 | #else /* HAVE_SOCKETS && HAVE_INET_SOCKETS */ |
2828d5f9 | 666 | |
aa0b6932 JB |
667 | #ifdef WINDOWSNT |
668 | # include <winsock2.h> | |
2828d5f9 | 669 | #else |
aa0b6932 JB |
670 | # include <sys/types.h> |
671 | # include <sys/socket.h> | |
672 | # include <sys/un.h> | |
aa0b6932 JB |
673 | #endif |
674 | ||
675 | #define AUTH_KEY_LENGTH 64 | |
676 | #define SEND_BUFFER_SIZE 4096 | |
677 | ||
678 | extern char *strerror (); | |
679 | extern int errno; | |
680 | ||
681 | /* Buffer to accumulate data to send in TCP connections. */ | |
682 | char send_buffer[SEND_BUFFER_SIZE + 1]; | |
683 | int sblen = 0; /* Fill pointer for the send buffer. */ | |
4b7b77f6 JR |
684 | /* Socket used to communicate with the Emacs server process. */ |
685 | HSOCKET emacs_socket = 0; | |
aa0b6932 | 686 | |
d22b00e5 JR |
687 | /* On Windows, the socket library was historically separate from the standard |
688 | C library, so errors are handled differently. */ | |
689 | void | |
690 | sock_err_message (function_name) | |
691 | char *function_name; | |
692 | { | |
693 | #ifdef WINDOWSNT | |
694 | char* msg = NULL; | |
695 | ||
696 | FormatMessage (FORMAT_MESSAGE_FROM_SYSTEM | |
697 | | FORMAT_MESSAGE_ALLOCATE_BUFFER | |
698 | | FORMAT_MESSAGE_ARGUMENT_ARRAY, | |
699 | NULL, WSAGetLastError (), 0, (LPTSTR)&msg, 0, NULL); | |
700 | ||
701 | message (TRUE, "%s: %s: %s\n", progname, function_name, msg); | |
702 | ||
703 | LocalFree (msg); | |
704 | #else | |
705 | message (TRUE, "%s: %s: %s\n", progname, function_name, strerror (errno)); | |
706 | #endif | |
707 | } | |
708 | ||
709 | ||
aa0b6932 JB |
710 | /* Let's send the data to Emacs when either |
711 | - the data ends in "\n", or | |
712 | - the buffer is full (but this shouldn't happen) | |
713 | Otherwise, we just accumulate it. */ | |
b03d27bd JB |
714 | void |
715 | send_to_emacs (s, data) | |
aa0b6932 JB |
716 | HSOCKET s; |
717 | char *data; | |
718 | { | |
719 | while (data) | |
2828d5f9 | 720 | { |
aa0b6932 JB |
721 | int dlen = strlen (data); |
722 | if (dlen + sblen >= SEND_BUFFER_SIZE) | |
723 | { | |
724 | int part = SEND_BUFFER_SIZE - sblen; | |
725 | strncpy (&send_buffer[sblen], data, part); | |
726 | data += part; | |
727 | sblen = SEND_BUFFER_SIZE; | |
728 | } | |
729 | else if (dlen) | |
730 | { | |
731 | strcpy (&send_buffer[sblen], data); | |
732 | data = NULL; | |
733 | sblen += dlen; | |
734 | } | |
735 | else | |
736 | break; | |
737 | ||
738 | if (sblen == SEND_BUFFER_SIZE | |
739 | || (sblen > 0 && send_buffer[sblen-1] == '\n')) | |
740 | { | |
741 | int sent = send (s, send_buffer, sblen, 0); | |
742 | if (sent != sblen) | |
743 | strcpy (send_buffer, &send_buffer[sent]); | |
744 | sblen -= sent; | |
745 | } | |
2828d5f9 | 746 | } |
2828d5f9 | 747 | } |
2828d5f9 KL |
748 | |
749 | \f | |
0b0d3e0b | 750 | /* In STR, insert a & before each &, each space, each newline, and |
a4cf2096 | 751 | any initial -. Change spaces to underscores, too, so that the |
0b0d3e0b KL |
752 | return value never contains a space. |
753 | ||
754 | Does not change the string. Outputs the result to STREAM. */ | |
87209357 | 755 | void |
974b73e8 | 756 | quote_argument (s, str) |
aa0b6932 | 757 | HSOCKET s; |
0b0d3e0b | 758 | char *str; |
5212210c | 759 | { |
9002956f | 760 | char *copy = (char *) xmalloc (strlen (str) * 2 + 1); |
5212210c RS |
761 | char *p, *q; |
762 | ||
0b0d3e0b | 763 | p = str; |
5212210c RS |
764 | q = copy; |
765 | while (*p) | |
766 | { | |
767 | if (*p == ' ') | |
768 | { | |
f1db6a73 | 769 | *q++ = '&'; |
5212210c RS |
770 | *q++ = '_'; |
771 | p++; | |
772 | } | |
3cf8c6aa SM |
773 | else if (*p == '\n') |
774 | { | |
775 | *q++ = '&'; | |
776 | *q++ = 'n'; | |
777 | p++; | |
778 | } | |
5212210c RS |
779 | else |
780 | { | |
0b0d3e0b | 781 | if (*p == '&' || (*p == '-' && p == str)) |
f1db6a73 | 782 | *q++ = '&'; |
5212210c RS |
783 | *q++ = *p++; |
784 | } | |
785 | } | |
f1db6a73 | 786 | *q++ = 0; |
5212210c | 787 | |
486ba65f | 788 | send_to_emacs (s, copy); |
87209357 EZ |
789 | |
790 | free (copy); | |
5212210c | 791 | } |
0c76956f | 792 | |
0b0d3e0b KL |
793 | |
794 | /* The inverse of quote_argument. Removes quoting in string STR by | |
795 | modifying the string in place. Returns STR. */ | |
796 | ||
797 | char * | |
798 | unquote_argument (str) | |
799 | char *str; | |
800 | { | |
801 | char *p, *q; | |
802 | ||
803 | if (! str) | |
804 | return str; | |
805 | ||
806 | p = str; | |
807 | q = str; | |
808 | while (*p) | |
809 | { | |
810 | if (*p == '&') | |
811 | { | |
812 | p++; | |
813 | if (*p == '&') | |
814 | *p = '&'; | |
815 | else if (*p == '_') | |
816 | *p = ' '; | |
817 | else if (*p == 'n') | |
818 | *p = '\n'; | |
819 | else if (*p == '-') | |
820 | *p = '-'; | |
821 | } | |
822 | *q++ = *p++; | |
823 | } | |
824 | *q = 0; | |
825 | return str; | |
826 | } | |
827 | ||
8f9aaa0a | 828 | \f |
b03d27bd JB |
829 | int |
830 | file_name_absolute_p (filename) | |
831 | const unsigned char *filename; | |
832 | { | |
833 | /* Sanity check, it shouldn't happen. */ | |
834 | if (! filename) return FALSE; | |
835 | ||
836 | /* /xxx is always an absolute path. */ | |
837 | if (filename[0] == '/') return TRUE; | |
838 | ||
839 | /* Empty filenames (which shouldn't happen) are relative. */ | |
840 | if (filename[0] == '\0') return FALSE; | |
841 | ||
842 | #ifdef WINDOWSNT | |
71b8f735 | 843 | /* X:\xxx is always absolute. */ |
5f7a4874 | 844 | if (isalpha (filename[0]) |
cb0297bb | 845 | && filename[1] == ':' && (filename[2] == '\\' || filename[2] == '/')) |
b03d27bd JB |
846 | return TRUE; |
847 | ||
848 | /* Both \xxx and \\xxx\yyy are absolute. */ | |
849 | if (filename[0] == '\\') return TRUE; | |
850 | #endif | |
851 | ||
852 | return FALSE; | |
853 | } | |
854 | ||
aa0b6932 | 855 | #ifdef WINDOWSNT |
f0384499 | 856 | /* Wrapper to make WSACleanup a cdecl, as required by atexit. */ |
b03d27bd JB |
857 | void |
858 | __cdecl close_winsock () | |
aa0b6932 JB |
859 | { |
860 | WSACleanup (); | |
861 | } | |
0c76956f | 862 | |
b03d27bd JB |
863 | /* Initialize the WinSock2 library. */ |
864 | void | |
865 | initialize_sockets () | |
0c76956f | 866 | { |
aa0b6932 JB |
867 | WSADATA wsaData; |
868 | ||
aa0b6932 JB |
869 | if (WSAStartup (MAKEWORD (2, 0), &wsaData)) |
870 | { | |
78da39c6 | 871 | message (TRUE, "%s: error initializing WinSock2\n", progname); |
aa0b6932 JB |
872 | exit (EXIT_FAILURE); |
873 | } | |
874 | ||
875 | atexit (close_winsock); | |
0c76956f | 876 | } |
e35fc962 | 877 | #endif /* WINDOWSNT */ |
974b73e8 | 878 | |
8f9aaa0a | 879 | \f |
97e3214d | 880 | /* |
aa0b6932 | 881 | * Read the information needed to set up a TCP comm channel with |
434a6c5d | 882 | * the Emacs server: host, port, pid and authentication string. |
0e0dced5 | 883 | */ |
b03d27bd JB |
884 | int |
885 | get_server_config (server, authentication) | |
aa0b6932 JB |
886 | struct sockaddr_in *server; |
887 | char *authentication; | |
97e3214d | 888 | { |
aa0b6932 JB |
889 | char dotted[32]; |
890 | char *port; | |
434a6c5d | 891 | char *pid; |
b03d27bd | 892 | FILE *config = NULL; |
aa0b6932 | 893 | |
b03d27bd JB |
894 | if (file_name_absolute_p (server_file)) |
895 | config = fopen (server_file, "rb"); | |
896 | else | |
97e3214d | 897 | { |
7ce8671d | 898 | char *home = egetenv ("HOME"); |
88b46d84 | 899 | |
aa0b6932 JB |
900 | if (home) |
901 | { | |
bc558f3e JB |
902 | char *path = alloca (strlen (home) + strlen (server_file) |
903 | + EXTRA_SPACE); | |
aa0b6932 JB |
904 | sprintf (path, "%s/.emacs.d/server/%s", home, server_file); |
905 | config = fopen (path, "rb"); | |
906 | } | |
88b46d84 | 907 | #ifdef WINDOWSNT |
7ce8671d | 908 | if (!config && (home = egetenv ("APPDATA"))) |
88b46d84 | 909 | { |
bc558f3e JB |
910 | char *path = alloca (strlen (home) + strlen (server_file) |
911 | + EXTRA_SPACE); | |
88b46d84 JB |
912 | sprintf (path, "%s/.emacs.d/server/%s", home, server_file); |
913 | config = fopen (path, "rb"); | |
914 | } | |
915 | #endif | |
aa0b6932 JB |
916 | } |
917 | ||
918 | if (! config) | |
919 | return FALSE; | |
920 | ||
921 | if (fgets (dotted, sizeof dotted, config) | |
434a6c5d JB |
922 | && (port = strchr (dotted, ':')) |
923 | && (pid = strchr (port, ' '))) | |
aa0b6932 JB |
924 | { |
925 | *port++ = '\0'; | |
434a6c5d | 926 | *pid++ = '\0'; |
97e3214d GM |
927 | } |
928 | else | |
929 | { | |
78da39c6 | 930 | message (TRUE, "%s: invalid configuration info\n", progname); |
65396510 | 931 | exit (EXIT_FAILURE); |
97e3214d | 932 | } |
97e3214d | 933 | |
aa0b6932 JB |
934 | server->sin_family = AF_INET; |
935 | server->sin_addr.s_addr = inet_addr (dotted); | |
936 | server->sin_port = htons (atoi (port)); | |
97e3214d | 937 | |
aa0b6932 JB |
938 | if (! fread (authentication, AUTH_KEY_LENGTH, 1, config)) |
939 | { | |
78da39c6 | 940 | message (TRUE, "%s: cannot read authentication info\n", progname); |
aa0b6932 JB |
941 | exit (EXIT_FAILURE); |
942 | } | |
46cec291 | 943 | |
aa0b6932 | 944 | fclose (config); |
97e3214d | 945 | |
c66648e0 | 946 | emacs_pid = atoi (pid); |
434a6c5d | 947 | |
aa0b6932 | 948 | return TRUE; |
97e3214d GM |
949 | } |
950 | ||
aa0b6932 JB |
951 | HSOCKET |
952 | set_tcp_socket () | |
953 | { | |
954 | HSOCKET s; | |
955 | struct sockaddr_in server; | |
aa0b6932 JB |
956 | struct linger l_arg = {1, 1}; |
957 | char auth_string[AUTH_KEY_LENGTH + 1]; | |
9628b887 | 958 | |
aa0b6932 JB |
959 | if (! get_server_config (&server, auth_string)) |
960 | return INVALID_SOCKET; | |
961 | ||
b03d27bd | 962 | if (server.sin_addr.s_addr != inet_addr ("127.0.0.1")) |
9219db75 | 963 | message (FALSE, "%s: connected to remote socket at %s\n", |
b03d27bd JB |
964 | progname, inet_ntoa (server.sin_addr)); |
965 | ||
aa0b6932 JB |
966 | /* |
967 | * Open up an AF_INET socket | |
968 | */ | |
969 | if ((s = socket (AF_INET, SOCK_STREAM, IPPROTO_TCP)) < 0) | |
970 | { | |
d22b00e5 | 971 | sock_err_message ("socket"); |
aa0b6932 JB |
972 | return INVALID_SOCKET; |
973 | } | |
974 | ||
975 | /* | |
976 | * Set up the socket | |
977 | */ | |
978 | if (connect (s, (struct sockaddr *) &server, sizeof server) < 0) | |
979 | { | |
d22b00e5 | 980 | sock_err_message ("connect"); |
aa0b6932 JB |
981 | return INVALID_SOCKET; |
982 | } | |
983 | ||
aa0b6932 JB |
984 | setsockopt (s, SOL_SOCKET, SO_LINGER, (char *) &l_arg, sizeof l_arg); |
985 | ||
986 | /* | |
987 | * Send the authentication | |
988 | */ | |
989 | auth_string[AUTH_KEY_LENGTH] = '\0'; | |
990 | ||
486ba65f JR |
991 | send_to_emacs (s, "-auth "); |
992 | send_to_emacs (s, auth_string); | |
5ab73228 | 993 | send_to_emacs (s, " "); |
aa0b6932 JB |
994 | |
995 | return s; | |
996 | } | |
997 | ||
b2ff54a0 JR |
998 | |
999 | /* Returns 1 if PREFIX is a prefix of STRING. */ | |
1000 | static int | |
1001 | strprefix (char *prefix, char *string) | |
1002 | { | |
cb06b8dc | 1003 | return !strncmp (prefix, string, strlen (prefix)); |
b2ff54a0 JR |
1004 | } |
1005 | ||
a336ee5b CY |
1006 | /* Get tty name and type. If successful, return the type in TTY_TYPE |
1007 | and the name in TTY_NAME, and return 1. Otherwise, fail if NOABORT | |
1008 | is zero, or return 0 if NOABORT is non-zero. */ | |
1009 | ||
1010 | int | |
1011 | find_tty (char **tty_type, char **tty_name, int noabort) | |
1012 | { | |
1013 | char *type = egetenv ("TERM"); | |
1014 | char *name = ttyname (fileno (stdout)); | |
1015 | ||
1016 | if (!name) | |
1017 | { | |
1018 | if (noabort) | |
1019 | return 0; | |
1020 | else | |
1021 | { | |
1022 | message (TRUE, "%s: could not get terminal name\n", progname); | |
1023 | fail (); | |
1024 | } | |
1025 | } | |
1026 | ||
1027 | if (!type) | |
1028 | { | |
1029 | if (noabort) | |
1030 | return 0; | |
1031 | else | |
1032 | { | |
1033 | message (TRUE, "%s: please set the TERM variable to your terminal type\n", | |
1034 | progname); | |
1035 | fail (); | |
1036 | } | |
1037 | } | |
1038 | ||
1039 | if (strcmp (type, "eterm") == 0) | |
1040 | { | |
1041 | if (noabort) | |
1042 | return 0; | |
1043 | else | |
1044 | { | |
1045 | /* This causes nasty, MULTI_KBOARD-related input lockouts. */ | |
1046 | message (TRUE, "%s: opening a frame in an Emacs term buffer" | |
1047 | " is not supported\n", progname); | |
1048 | fail (); | |
1049 | } | |
1050 | } | |
1051 | ||
1052 | *tty_name = name; | |
1053 | *tty_type = type; | |
1054 | return 1; | |
1055 | } | |
1056 | ||
b2ff54a0 | 1057 | |
aa0b6932 | 1058 | #if !defined (NO_SOCKETS_IN_FILE_SYSTEM) |
46cec291 | 1059 | |
9f637eea GM |
1060 | /* Three possibilities: |
1061 | 2 - can't be `stat'ed (sets errno) | |
1062 | 1 - isn't owned by us | |
1063 | 0 - success: none of the above */ | |
1064 | ||
1065 | static int | |
1066 | socket_status (socket_name) | |
1067 | char *socket_name; | |
1068 | { | |
1069 | struct stat statbfr; | |
1070 | ||
1071 | if (stat (socket_name, &statbfr) == -1) | |
1072 | return 2; | |
1073 | ||
1074 | if (statbfr.st_uid != geteuid ()) | |
1075 | return 1; | |
0b0d3e0b | 1076 | |
9f637eea GM |
1077 | return 0; |
1078 | } | |
1079 | ||
974b73e8 | 1080 | \f |
da8e1115 KL |
1081 | /* A signal handler that passes the signal to the Emacs process. |
1082 | Useful for SIGWINCH. */ | |
1083 | ||
9628b887 | 1084 | SIGTYPE |
428a555e | 1085 | pass_signal_to_emacs (int signalnum) |
9628b887 KL |
1086 | { |
1087 | int old_errno = errno; | |
1088 | ||
9f729af5 | 1089 | if (emacs_pid) |
428a555e | 1090 | kill (emacs_pid, signalnum); |
9f729af5 | 1091 | |
428a555e | 1092 | signal (signalnum, pass_signal_to_emacs); |
9f729af5 KL |
1093 | errno = old_errno; |
1094 | } | |
1095 | ||
0b0d3e0b KL |
1096 | /* Signal handler for SIGCONT; notify the Emacs process that it can |
1097 | now resume our tty frame. */ | |
1098 | ||
1099 | SIGTYPE | |
1100 | handle_sigcont (int signalnum) | |
1101 | { | |
1102 | int old_errno = errno; | |
1103 | ||
1104 | if (tcgetpgrp (1) == getpgrp ()) | |
1105 | { | |
1106 | /* We are in the foreground. */ | |
486ba65f | 1107 | send_to_emacs (emacs_socket, "-resume \n"); |
0b0d3e0b KL |
1108 | } |
1109 | else | |
1110 | { | |
1111 | /* We are in the background; cancel the continue. */ | |
1112 | kill (getpid (), SIGSTOP); | |
1113 | } | |
c6c53c3e KL |
1114 | |
1115 | signal (signalnum, handle_sigcont); | |
0b0d3e0b KL |
1116 | errno = old_errno; |
1117 | } | |
1118 | ||
1119 | /* Signal handler for SIGTSTP; notify the Emacs process that we are | |
1120 | going to sleep. Normally the suspend is initiated by Emacs via | |
1121 | server-handle-suspend-tty, but if the server gets out of sync with | |
1122 | reality, we may get a SIGTSTP on C-z. Handling this signal and | |
1123 | notifying Emacs about it should get things under control again. */ | |
1124 | ||
1125 | SIGTYPE | |
1126 | handle_sigtstp (int signalnum) | |
1127 | { | |
1128 | int old_errno = errno; | |
1129 | sigset_t set; | |
c0f342ab | 1130 | |
90843190 | 1131 | if (emacs_socket) |
486ba65f | 1132 | send_to_emacs (emacs_socket, "-suspend \n"); |
0b0d3e0b | 1133 | |
5ab73228 | 1134 | /* Unblock this signal and call the default handler by temporarily |
0b0d3e0b KL |
1135 | changing the handler and resignalling. */ |
1136 | sigprocmask (SIG_BLOCK, NULL, &set); | |
1137 | sigdelset (&set, signalnum); | |
1138 | signal (signalnum, SIG_DFL); | |
1139 | kill (getpid (), signalnum); | |
1140 | sigprocmask (SIG_SETMASK, &set, NULL); /* Let's the above signal through. */ | |
1141 | signal (signalnum, handle_sigtstp); | |
1142 | ||
1143 | errno = old_errno; | |
1144 | } | |
273b9028 CY |
1145 | |
1146 | ||
da8e1115 | 1147 | /* Set up signal handlers before opening a frame on the current tty. */ |
0b0d3e0b | 1148 | |
4d553a13 KL |
1149 | void |
1150 | init_signals (void) | |
9628b887 KL |
1151 | { |
1152 | /* Set up signal handlers. */ | |
428a555e | 1153 | signal (SIGWINCH, pass_signal_to_emacs); |
4ca927b4 KL |
1154 | |
1155 | /* Don't pass SIGINT and SIGQUIT to Emacs, because it has no way of | |
1156 | deciding which terminal the signal came from. C-g is now a | |
1157 | normal input event on secondary terminals. */ | |
1158 | #if 0 | |
428a555e KL |
1159 | signal (SIGINT, pass_signal_to_emacs); |
1160 | signal (SIGQUIT, pass_signal_to_emacs); | |
4ca927b4 | 1161 | #endif |
0b0d3e0b KL |
1162 | |
1163 | signal (SIGCONT, handle_sigcont); | |
1164 | signal (SIGTSTP, handle_sigtstp); | |
1165 | signal (SIGTTOU, handle_sigtstp); | |
9628b887 KL |
1166 | } |
1167 | ||
46cec291 | 1168 | |
aa0b6932 JB |
1169 | HSOCKET |
1170 | set_local_socket () | |
46cec291 | 1171 | { |
aa0b6932 | 1172 | HSOCKET s; |
46cec291 | 1173 | struct sockaddr_un server; |
46cec291 | 1174 | |
e69233c2 | 1175 | /* |
46cec291 RS |
1176 | * Open up an AF_UNIX socket in this person's home directory |
1177 | */ | |
1178 | ||
1179 | if ((s = socket (AF_UNIX, SOCK_STREAM, 0)) < 0) | |
1180 | { | |
42073bfb | 1181 | message (TRUE, "%s: socket: %s\n", progname, strerror (errno)); |
aa0b6932 | 1182 | return INVALID_SOCKET; |
46cec291 | 1183 | } |
e69233c2 | 1184 | |
46cec291 | 1185 | server.sun_family = AF_UNIX; |
c5fee545 | 1186 | |
c5fee545 | 1187 | { |
9f637eea | 1188 | int sock_status = 0; |
5c9659d3 | 1189 | int default_sock = !socket_name; |
b80bf66e | 1190 | int saved_errno = 0; |
0734b0d0 | 1191 | char *server_name = "server"; |
f77b11a0 | 1192 | char *tmpdir; |
0b0d3e0b | 1193 | |
0734b0d0 SM |
1194 | if (socket_name && !index (socket_name, '/') && !index (socket_name, '\\')) |
1195 | { /* socket_name is a file name component. */ | |
d3a6748c KL |
1196 | server_name = socket_name; |
1197 | socket_name = NULL; | |
1198 | default_sock = 1; /* Try both UIDs. */ | |
0734b0d0 | 1199 | } |
efb859b4 | 1200 | |
5c9659d3 | 1201 | if (default_sock) |
254107e4 | 1202 | { |
f77b11a0 JB |
1203 | tmpdir = egetenv ("TMPDIR"); |
1204 | if (!tmpdir) | |
1205 | tmpdir = "/tmp"; | |
bc558f3e JB |
1206 | socket_name = alloca (strlen (tmpdir) + strlen (server_name) |
1207 | + EXTRA_SPACE); | |
f77b11a0 JB |
1208 | sprintf (socket_name, "%s/emacs%d/%s", |
1209 | tmpdir, (int) geteuid (), server_name); | |
254107e4 RS |
1210 | } |
1211 | ||
1212 | if (strlen (socket_name) < sizeof (server.sun_path)) | |
1213 | strcpy (server.sun_path, socket_name); | |
1214 | else | |
819b8f00 | 1215 | { |
78da39c6 | 1216 | message (TRUE, "%s: socket-name %s too long\n", |
974b73e8 | 1217 | progname, socket_name); |
819b8f00 KL |
1218 | fail (); |
1219 | } | |
efb859b4 | 1220 | |
9f637eea GM |
1221 | /* See if the socket exists, and if it's owned by us. */ |
1222 | sock_status = socket_status (server.sun_path); | |
152b6e83 | 1223 | saved_errno = errno; |
5c9659d3 | 1224 | if (sock_status && default_sock) |
efb859b4 | 1225 | { |
9f637eea GM |
1226 | /* Failing that, see if LOGNAME or USER exist and differ from |
1227 | our euid. If so, look for a socket based on the UID | |
1228 | associated with the name. This is reminiscent of the logic | |
1229 | that init_editfns uses to set the global Vuser_full_name. */ | |
e69233c2 | 1230 | |
7ce8671d | 1231 | char *user_name = (char *) egetenv ("LOGNAME"); |
293f9f2a | 1232 | |
9f637eea | 1233 | if (!user_name) |
7ce8671d | 1234 | user_name = (char *) egetenv ("USER"); |
e69233c2 | 1235 | |
9f637eea GM |
1236 | if (user_name) |
1237 | { | |
1238 | struct passwd *pw = getpwnam (user_name); | |
293f9f2a | 1239 | |
9f637eea GM |
1240 | if (pw && (pw->pw_uid != geteuid ())) |
1241 | { | |
1242 | /* We're running under su, apparently. */ | |
bc558f3e JB |
1243 | socket_name = alloca (strlen (tmpdir) + strlen (server_name) |
1244 | + EXTRA_SPACE); | |
f77b11a0 JB |
1245 | sprintf (socket_name, "%s/emacs%d/%s", |
1246 | tmpdir, (int) pw->pw_uid, server_name); | |
5c9659d3 SM |
1247 | |
1248 | if (strlen (socket_name) < sizeof (server.sun_path)) | |
1249 | strcpy (server.sun_path, socket_name); | |
1250 | else | |
1251 | { | |
78da39c6 | 1252 | message (TRUE, "%s: socket-name %s too long\n", |
aa0b6932 | 1253 | progname, socket_name); |
65396510 | 1254 | exit (EXIT_FAILURE); |
5c9659d3 SM |
1255 | } |
1256 | ||
9f637eea | 1257 | sock_status = socket_status (server.sun_path); |
b80bf66e | 1258 | saved_errno = errno; |
9f637eea | 1259 | } |
293f9f2a RS |
1260 | else |
1261 | errno = saved_errno; | |
9f637eea | 1262 | } |
efb859b4 | 1263 | } |
e69233c2 | 1264 | |
aa0b6932 JB |
1265 | switch (sock_status) |
1266 | { | |
1267 | case 1: | |
974b73e8 KL |
1268 | /* There's a socket, but it isn't owned by us. This is OK if |
1269 | we are root. */ | |
1270 | if (0 != geteuid ()) | |
1271 | { | |
1272 | message (TRUE, "%s: Invalid socket owner\n", progname); | |
aa0b6932 | 1273 | return INVALID_SOCKET; |
974b73e8 KL |
1274 | } |
1275 | break; | |
aa0b6932 JB |
1276 | |
1277 | case 2: | |
974b73e8 KL |
1278 | /* `stat' failed */ |
1279 | if (saved_errno == ENOENT) | |
1280 | message (TRUE, | |
1281 | "%s: can't find socket; have you started the server?\n\ | |
45adde32 | 1282 | To start the server in Emacs, type \"M-x server-start\".\n", |
aa0b6932 | 1283 | progname); |
974b73e8 KL |
1284 | else |
1285 | message (TRUE, "%s: can't stat %s: %s\n", | |
aa0b6932 | 1286 | progname, server.sun_path, strerror (saved_errno)); |
974b73e8 | 1287 | return INVALID_SOCKET; |
aa0b6932 | 1288 | } |
efb859b4 | 1289 | } |
46cec291 | 1290 | |
4e23f2ba JB |
1291 | if (connect (s, (struct sockaddr *) &server, strlen (server.sun_path) + 2) |
1292 | < 0) | |
46cec291 | 1293 | { |
42073bfb | 1294 | message (TRUE, "%s: connect: %s\n", progname, strerror (errno)); |
aa0b6932 | 1295 | return INVALID_SOCKET; |
46cec291 | 1296 | } |
23a7488d | 1297 | |
aa0b6932 JB |
1298 | return s; |
1299 | } | |
1300 | #endif /* ! NO_SOCKETS_IN_FILE_SYSTEM */ | |
1301 | ||
1302 | HSOCKET | |
636b507b | 1303 | set_socket (int no_exit_if_error) |
aa0b6932 | 1304 | { |
b03d27bd | 1305 | HSOCKET s; |
c0f342ab | 1306 | |
b03d27bd | 1307 | INITIALIZE (); |
c0f342ab | 1308 | |
aa0b6932 | 1309 | #ifndef NO_SOCKETS_IN_FILE_SYSTEM |
b03d27bd JB |
1310 | /* Explicit --socket-name argument. */ |
1311 | if (socket_name) | |
46cec291 | 1312 | { |
b03d27bd | 1313 | s = set_local_socket (); |
636b507b | 1314 | if ((s != INVALID_SOCKET) || no_exit_if_error) |
974b73e8 | 1315 | return s; |
355a326e | 1316 | message (TRUE, "%s: error accessing socket \"%s\"\n", |
974b73e8 | 1317 | progname, socket_name); |
b03d27bd | 1318 | exit (EXIT_FAILURE); |
46cec291 | 1319 | } |
b03d27bd JB |
1320 | #endif |
1321 | ||
1322 | /* Explicit --server-file arg or EMACS_SERVER_FILE variable. */ | |
1323 | if (!server_file) | |
7ce8671d | 1324 | server_file = egetenv ("EMACS_SERVER_FILE"); |
46cec291 | 1325 | |
b03d27bd | 1326 | if (server_file) |
23a7488d | 1327 | { |
b03d27bd | 1328 | s = set_tcp_socket (); |
636b507b | 1329 | if ((s != INVALID_SOCKET) || no_exit_if_error) |
974b73e8 | 1330 | return s; |
c0f342ab | 1331 | |
78da39c6 | 1332 | message (TRUE, "%s: error accessing server file \"%s\"\n", |
974b73e8 | 1333 | progname, server_file); |
b03d27bd | 1334 | exit (EXIT_FAILURE); |
23a7488d | 1335 | } |
c0f342ab | 1336 | |
b03d27bd JB |
1337 | #ifndef NO_SOCKETS_IN_FILE_SYSTEM |
1338 | /* Implicit local socket. */ | |
1339 | s = set_local_socket (); | |
1340 | if (s != INVALID_SOCKET) | |
1341 | return s; | |
1342 | #endif | |
23a7488d | 1343 | |
b03d27bd JB |
1344 | /* Implicit server file. */ |
1345 | server_file = "server"; | |
1346 | s = set_tcp_socket (); | |
636b507b | 1347 | if ((s != INVALID_SOCKET) || no_exit_if_error) |
b03d27bd JB |
1348 | return s; |
1349 | ||
1350 | /* No implicit or explicit socket, and no alternate editor. */ | |
42073bfb | 1351 | message (TRUE, "%s: No socket or alternate editor. Please use:\n\n" |
b03d27bd JB |
1352 | #ifndef NO_SOCKETS_IN_FILE_SYSTEM |
1353 | "\t--socket-name\n" | |
ee6a193c | 1354 | #endif |
b03d27bd JB |
1355 | "\t--server-file (or environment variable EMACS_SERVER_FILE)\n\ |
1356 | \t--alternate-editor (or environment variable ALTERNATE_EDITOR)\n", | |
1357 | progname); | |
1358 | exit (EXIT_FAILURE); | |
aa0b6932 | 1359 | } |
46cec291 | 1360 | |
0e0dced5 JB |
1361 | #ifdef WINDOWSNT |
1362 | FARPROC set_fg; /* Pointer to AllowSetForegroundWindow. */ | |
1363 | FARPROC get_wc; /* Pointer to RealGetWindowClassA. */ | |
1364 | ||
1365 | BOOL CALLBACK | |
1366 | w32_find_emacs_process (hWnd, lParam) | |
1367 | HWND hWnd; | |
1368 | LPARAM lParam; | |
1369 | { | |
1370 | DWORD pid; | |
1371 | char class[6]; | |
1372 | ||
1373 | /* Reject any window not of class "Emacs". */ | |
1374 | if (! get_wc (hWnd, class, sizeof (class)) | |
1375 | || strcmp (class, "Emacs")) | |
1376 | return TRUE; | |
1377 | ||
1378 | /* We only need the process id, not the thread id. */ | |
1379 | (void) GetWindowThreadProcessId (hWnd, &pid); | |
1380 | ||
1381 | /* Not the one we're looking for. */ | |
1382 | if (pid != (DWORD) emacs_pid) return TRUE; | |
1383 | ||
1384 | /* OK, let's raise it. */ | |
1385 | set_fg (emacs_pid); | |
1386 | ||
1387 | /* Stop enumeration. */ | |
1388 | return FALSE; | |
1389 | } | |
1390 | ||
1391 | /* | |
1392 | * Search for a window of class "Emacs" and owned by a process with | |
1393 | * process id = emacs_pid. If found, allow it to grab the focus. | |
1394 | */ | |
1395 | void | |
1396 | w32_give_focus () | |
1397 | { | |
1398 | HMODULE hUser32; | |
1399 | ||
71b8f735 | 1400 | /* It shouldn't happen when dealing with TCP sockets. */ |
0e0dced5 JB |
1401 | if (!emacs_pid) return; |
1402 | ||
1403 | if (!(hUser32 = LoadLibrary ("user32.dll"))) return; | |
1404 | ||
1405 | /* Modern Windows restrict which processes can set the foreground window. | |
1406 | emacsclient can allow Emacs to grab the focus by calling the function | |
1407 | AllowSetForegroundWindow. Unfortunately, older Windows (W95, W98 and | |
1408 | NT) lack this function, so we have to check its availability. */ | |
1409 | if ((set_fg = GetProcAddress (hUser32, "AllowSetForegroundWindow")) | |
1410 | && (get_wc = GetProcAddress (hUser32, "RealGetWindowClassA"))) | |
1411 | EnumWindows (w32_find_emacs_process, (LPARAM) 0); | |
1412 | ||
1413 | FreeLibrary (hUser32); | |
1414 | } | |
1415 | #endif | |
1416 | ||
636b507b DN |
1417 | /* Start the emacs daemon and try to connect to it. */ |
1418 | ||
1419 | void | |
1420 | start_daemon_and_retry_set_socket (void) | |
1421 | { | |
c3f995a2 | 1422 | #ifdef EMACS_DAEMON |
636b507b DN |
1423 | pid_t dpid; |
1424 | int status; | |
1425 | pid_t p; | |
1426 | ||
1427 | dpid = fork (); | |
1428 | ||
1429 | if (dpid > 0) | |
1430 | { | |
1431 | p = waitpid (dpid, &status, WUNTRACED | WCONTINUED); | |
1432 | ||
1433 | /* Try connecting again, the daemon should have started by | |
1434 | now. */ | |
1435 | message (TRUE, "daemon should have started, trying to connect again\n", dpid); | |
1436 | if ((emacs_socket = set_socket (1)) == INVALID_SOCKET) | |
1437 | message (TRUE, "Cannot connect even after starting the daemon\n"); | |
1438 | } | |
1439 | else if (dpid < 0) | |
1440 | { | |
1441 | fprintf (stderr, "Cannot fork!\n"); | |
1442 | exit (1); | |
1443 | } | |
1444 | else | |
1445 | { | |
1446 | char *d_argv[] = {"emacs", "--daemon", 0 }; | |
1447 | if (socket_name != NULL) | |
1448 | { | |
1449 | /* Pass --daemon=socket_name as argument. */ | |
1450 | char *deq = "--daemon="; | |
1451 | char *daemon_arg = alloca (strlen (deq) | |
1452 | + strlen (socket_name) + 1); | |
1453 | strcpy (daemon_arg, deq); | |
1454 | strcat (daemon_arg, socket_name); | |
1455 | d_argv[1] = daemon_arg; | |
1456 | } | |
1457 | execvp ("emacs", d_argv); | |
1458 | message (TRUE, "%s: error starting emacs daemon\n", progname); | |
1459 | } | |
c3f995a2 | 1460 | #endif /* EMACS_DAEMON */ |
636b507b DN |
1461 | } |
1462 | ||
aa0b6932 JB |
1463 | int |
1464 | main (argc, argv) | |
1465 | int argc; | |
1466 | char **argv; | |
1467 | { | |
aa0b6932 | 1468 | int i, rl, needlf = 0; |
974b73e8 | 1469 | char *cwd, *str; |
aa0b6932 | 1470 | char string[BUFSIZ+1]; |
c3f995a2 | 1471 | int null_socket_name, null_server_file, start_daemon_if_needed = 0; |
aa0b6932 | 1472 | |
974b73e8 | 1473 | main_argv = argv; |
aa0b6932 JB |
1474 | progname = argv[0]; |
1475 | ||
1476 | /* Process options. */ | |
1477 | decode_options (argc, argv); | |
1478 | ||
273b9028 | 1479 | if ((argc - optind < 1) && !eval && current_frame) |
23a7488d | 1480 | { |
974b73e8 KL |
1481 | message (TRUE, "%s: file name or argument required\n" |
1482 | "Try `%s --help' for more information\n", | |
1483 | progname, progname); | |
aa0b6932 | 1484 | exit (EXIT_FAILURE); |
23a7488d RS |
1485 | } |
1486 | ||
c3f995a2 | 1487 | #ifdef EMACS_DAEMON |
636b507b DN |
1488 | /* If alternate_editor is the empty string, start the emacs daemon |
1489 | in case of failure to connect. */ | |
1490 | start_daemon_if_needed = (alternate_editor | |
1491 | && (alternate_editor[0] == '\0')); | |
c3f995a2 | 1492 | #endif /* EMACS_DAEMON */ |
636b507b DN |
1493 | if (start_daemon_if_needed) |
1494 | { | |
1495 | /* set_socket changes the values for socket_name and | |
1496 | server_file, we need to reset them, if they were NULL before | |
1497 | for the second call to set_socket. */ | |
1498 | null_socket_name = (socket_name == NULL); | |
1499 | null_server_file = (server_file == NULL); | |
1500 | } | |
aa0b6932 | 1501 | |
636b507b DN |
1502 | if ((emacs_socket = set_socket (alternate_editor |
1503 | || start_daemon_if_needed)) == INVALID_SOCKET) | |
1504 | if (start_daemon_if_needed) | |
1505 | { | |
1506 | /* Reset socket_name and server_file if they were NULL | |
1507 | before the set_socket call. */ | |
1508 | if (null_socket_name) | |
1509 | socket_name = NULL; | |
1510 | if (null_server_file) | |
1511 | server_file = NULL; | |
1512 | ||
1513 | start_daemon_and_retry_set_socket (); | |
1514 | } | |
1515 | else | |
1516 | fail (); | |
974b73e8 KL |
1517 | |
1518 | cwd = get_current_dir_name (); | |
46cec291 RS |
1519 | if (cwd == 0) |
1520 | { | |
1521 | /* getwd puts message in STRING if it fails. */ | |
974b73e8 KL |
1522 | message (TRUE, "%s: %s\n", progname, |
1523 | "Cannot get current working directory"); | |
819b8f00 | 1524 | fail (); |
46cec291 RS |
1525 | } |
1526 | ||
c66648e0 | 1527 | #ifdef WINDOWSNT |
0e0dced5 | 1528 | w32_give_focus (); |
c66648e0 JB |
1529 | #endif |
1530 | ||
273b9028 | 1531 | /* Send over our environment and current directory. */ |
59e085e0 KL |
1532 | if (!current_frame) |
1533 | { | |
1534 | extern char **environ; | |
1535 | int i; | |
1536 | for (i = 0; environ[i]; i++) | |
1537 | { | |
1538 | char *name = xstrdup (environ[i]); | |
1539 | char *value = strchr (name, '='); | |
486ba65f JR |
1540 | send_to_emacs (emacs_socket, "-env "); |
1541 | quote_argument (emacs_socket, environ[i]); | |
1542 | send_to_emacs (emacs_socket, " "); | |
59e085e0 | 1543 | } |
486ba65f JR |
1544 | send_to_emacs (emacs_socket, "-dir "); |
1545 | quote_argument (emacs_socket, cwd); | |
1546 | send_to_emacs (emacs_socket, "/"); | |
1547 | send_to_emacs (emacs_socket, " "); | |
2828d5f9 KL |
1548 | } |
1549 | ||
6afdd335 | 1550 | retry: |
5212210c | 1551 | if (nowait) |
486ba65f | 1552 | send_to_emacs (emacs_socket, "-nowait "); |
292d74a3 | 1553 | |
92071250 | 1554 | if (current_frame) |
486ba65f | 1555 | send_to_emacs (emacs_socket, "-current-frame "); |
c0f342ab | 1556 | |
30be2360 | 1557 | if (display) |
87209357 | 1558 | { |
486ba65f JR |
1559 | send_to_emacs (emacs_socket, "-display "); |
1560 | quote_argument (emacs_socket, display); | |
1561 | send_to_emacs (emacs_socket, " "); | |
87209357 | 1562 | } |
30be2360 | 1563 | |
8536c0f5 CY |
1564 | /* If using the current frame, send tty information to Emacs anyway. |
1565 | In daemon mode, Emacs may need to occupy this tty if no other | |
1566 | frame is available. */ | |
322ca650 | 1567 | if (tty || (current_frame && !eval)) |
9628b887 | 1568 | { |
273b9028 | 1569 | char *tty_type, *tty_name; |
0b0d3e0b | 1570 | |
273b9028 CY |
1571 | if (find_tty (&tty_type, &tty_name, !tty)) |
1572 | { | |
b2ff54a0 | 1573 | #if !defined (NO_SOCKETS_IN_FILE_SYSTEM) |
273b9028 | 1574 | init_signals (); |
b2ff54a0 | 1575 | #endif |
273b9028 CY |
1576 | send_to_emacs (emacs_socket, "-tty "); |
1577 | quote_argument (emacs_socket, tty_name); | |
1578 | send_to_emacs (emacs_socket, " "); | |
1579 | quote_argument (emacs_socket, tty_type); | |
1580 | send_to_emacs (emacs_socket, " "); | |
1581 | } | |
9628b887 | 1582 | } |
77134727 | 1583 | |
273b9028 | 1584 | if (!current_frame && !tty) |
486ba65f | 1585 | send_to_emacs (emacs_socket, "-window-system "); |
0b0d3e0b | 1586 | |
87209357 | 1587 | if ((argc - optind > 0)) |
5212210c | 1588 | { |
87209357 | 1589 | for (i = optind; i < argc; i++) |
46cec291 | 1590 | { |
0b0d3e0b KL |
1591 | int relative = 0; |
1592 | ||
87209357 | 1593 | if (eval) |
0b0d3e0b | 1594 | { |
974b73e8 | 1595 | /* Don't prepend cwd or anything like that. */ |
486ba65f JR |
1596 | send_to_emacs (emacs_socket, "-eval "); |
1597 | quote_argument (emacs_socket, argv[i]); | |
1598 | send_to_emacs (emacs_socket, " "); | |
0b0d3e0b KL |
1599 | continue; |
1600 | } | |
1601 | ||
1602 | if (*argv[i] == '+') | |
1603 | { | |
87209357 EZ |
1604 | char *p = argv[i] + 1; |
1605 | while (isdigit ((unsigned char) *p) || *p == ':') p++; | |
0b0d3e0b KL |
1606 | if (*p == 0) |
1607 | { | |
486ba65f JR |
1608 | send_to_emacs (emacs_socket, "-position "); |
1609 | quote_argument (emacs_socket, argv[i]); | |
1610 | send_to_emacs (emacs_socket, " "); | |
0b0d3e0b KL |
1611 | continue; |
1612 | } | |
1613 | else | |
1614 | relative = 1; | |
1615 | } | |
50f271cb JB |
1616 | else if (! file_name_absolute_p (argv[i])) |
1617 | #ifndef WINDOWSNT | |
1618 | relative = 1; | |
1619 | #else | |
1620 | /* Call GetFullPathName so filenames of the form X:Y, where X is | |
1621 | a valid drive designator, are interpreted as drive:path, not | |
1622 | file:stream, and treated as absolute. | |
1623 | The user can still pass a file:stream if desired (for example, | |
31e25350 | 1624 | .\X:Y), but it is not very useful, as Emacs currently does a |
c966fd27 | 1625 | very bad job of dealing with NTFS streams. */ |
50f271cb JB |
1626 | { |
1627 | char *filename = (char *) xmalloc (MAX_PATH); | |
1628 | DWORD size; | |
1629 | ||
1630 | size = GetFullPathName (argv[i], MAX_PATH, filename, NULL); | |
1631 | if (size > 0 && size < MAX_PATH) | |
1632 | argv[i] = filename; | |
1633 | else | |
1634 | { | |
1635 | relative = 1; | |
1636 | free (filename); | |
1637 | } | |
1638 | } | |
1639 | #endif | |
0b0d3e0b | 1640 | |
486ba65f | 1641 | send_to_emacs (emacs_socket, "-file "); |
0b0d3e0b KL |
1642 | if (relative) |
1643 | { | |
486ba65f JR |
1644 | quote_argument (emacs_socket, cwd); |
1645 | send_to_emacs (emacs_socket, "/"); | |
0b0d3e0b | 1646 | } |
486ba65f JR |
1647 | quote_argument (emacs_socket, argv[i]); |
1648 | send_to_emacs (emacs_socket, " "); | |
0b0d3e0b | 1649 | } |
46cec291 | 1650 | } |
273b9028 | 1651 | else if (eval) |
87209357 | 1652 | { |
273b9028 CY |
1653 | /* Read expressions interactively. */ |
1654 | while ((str = fgets (string, BUFSIZ, stdin))) | |
1655 | { | |
1656 | send_to_emacs (emacs_socket, "-eval "); | |
1657 | quote_argument (emacs_socket, str); | |
1658 | } | |
1659 | send_to_emacs (emacs_socket, " "); | |
87209357 | 1660 | } |
0b0d3e0b | 1661 | |
486ba65f | 1662 | send_to_emacs (emacs_socket, "\n"); |
46cec291 | 1663 | |
fc2040c0 KL |
1664 | /* Wait for an answer. */ |
1665 | if (!eval && !tty && !nowait) | |
30be2360 SM |
1666 | { |
1667 | printf ("Waiting for Emacs..."); | |
1668 | needlf = 2; | |
1669 | } | |
46cec291 | 1670 | fflush (stdout); |
0b0d3e0b | 1671 | fsync (1); |
46cec291 | 1672 | |
3cf8c6aa | 1673 | /* Now, wait for an answer and print any messages. */ |
4b7b77f6 | 1674 | while ((rl = recv (emacs_socket, string, BUFSIZ, 0)) > 0) |
3cf8c6aa | 1675 | { |
974b73e8 KL |
1676 | char *p; |
1677 | string[rl] = '\0'; | |
1678 | ||
1679 | p = string + strlen (string) - 1; | |
1680 | while (p > string && *p == '\n') | |
0b0d3e0b KL |
1681 | *p-- = 0; |
1682 | ||
31fa6595 | 1683 | if (strprefix ("-emacs-pid ", string)) |
4d553a13 | 1684 | { |
6afdd335 | 1685 | /* -emacs-pid PID: The process id of the Emacs process. */ |
77134727 KL |
1686 | emacs_pid = strtol (string + strlen ("-emacs-pid"), NULL, 10); |
1687 | } | |
974b73e8 | 1688 | else if (strprefix ("-window-system-unsupported ", string)) |
6afdd335 KL |
1689 | { |
1690 | /* -window-system-unsupported: Emacs was compiled without X | |
1691 | support. Try again on the terminal. */ | |
6afdd335 KL |
1692 | nowait = 0; |
1693 | tty = 1; | |
1694 | goto retry; | |
1695 | } | |
974b73e8 | 1696 | else if (strprefix ("-print ", string)) |
77134727 | 1697 | { |
6afdd335 | 1698 | /* -print STRING: Print STRING on the terminal. */ |
974b73e8 | 1699 | str = unquote_argument (string + strlen ("-print ")); |
0b0d3e0b | 1700 | if (needlf) |
77134727 | 1701 | printf ("\n"); |
0b0d3e0b KL |
1702 | printf ("%s", str); |
1703 | needlf = str[0] == '\0' ? needlf : str[strlen (str) - 1] != '\n'; | |
77134727 | 1704 | } |
974b73e8 | 1705 | else if (strprefix ("-error ", string)) |
77134727 | 1706 | { |
6afdd335 | 1707 | /* -error DESCRIPTION: Signal an error on the terminal. */ |
974b73e8 | 1708 | str = unquote_argument (string + strlen ("-error ")); |
0b0d3e0b KL |
1709 | if (needlf) |
1710 | printf ("\n"); | |
974b73e8 | 1711 | fprintf (stderr, "*ERROR*: %s", str); |
0b0d3e0b KL |
1712 | needlf = str[0] == '\0' ? needlf : str[strlen (str) - 1] != '\n'; |
1713 | } | |
c801ad51 | 1714 | #ifdef SIGSTOP |
382707ec | 1715 | else if (strprefix ("-suspend ", string)) |
0b0d3e0b | 1716 | { |
6afdd335 | 1717 | /* -suspend: Suspend this terminal, i.e., stop the process. */ |
0b0d3e0b | 1718 | if (needlf) |
77134727 | 1719 | printf ("\n"); |
0b0d3e0b KL |
1720 | needlf = 0; |
1721 | kill (0, SIGSTOP); | |
4d553a13 | 1722 | } |
b2ff54a0 | 1723 | #endif |
4d553a13 KL |
1724 | else |
1725 | { | |
6afdd335 | 1726 | /* Unknown command. */ |
0b0d3e0b | 1727 | if (needlf) |
4d553a13 | 1728 | printf ("\n"); |
974b73e8 KL |
1729 | printf ("*ERROR*: Unknown message: %s", string); |
1730 | needlf = string[0] == '\0' ? needlf : string[strlen (string) - 1] != '\n'; | |
4d553a13 | 1731 | } |
3cf8c6aa SM |
1732 | } |
1733 | ||
1734 | if (needlf) | |
1735 | printf ("\n"); | |
1736 | fflush (stdout); | |
0b0d3e0b | 1737 | fsync (1); |
23a7488d | 1738 | |
4b7b77f6 | 1739 | CLOSE_SOCKET (emacs_socket); |
65396510 | 1740 | return EXIT_SUCCESS; |
46cec291 RS |
1741 | } |
1742 | ||
1e7823d0 | 1743 | #endif /* HAVE_SOCKETS && HAVE_INET_SOCKETS */ |
aa0b6932 | 1744 | |
27711600 RM |
1745 | \f |
1746 | #ifndef HAVE_STRERROR | |
1747 | char * | |
1748 | strerror (errnum) | |
1749 | int errnum; | |
1750 | { | |
1751 | extern char *sys_errlist[]; | |
1752 | extern int sys_nerr; | |
1753 | ||
1754 | if (errnum >= 0 && errnum < sys_nerr) | |
1755 | return sys_errlist[errnum]; | |
1756 | return (char *) "Unknown error"; | |
1757 | } | |
1758 | ||
1759 | #endif /* ! HAVE_STRERROR */ | |
ab5796a9 MB |
1760 | |
1761 | /* arch-tag: f39bb9c4-73eb-477e-896d-50832e2ca9a7 | |
1762 | (do not change this comment) */ | |
65396510 TTN |
1763 | |
1764 | /* emacsclient.c ends here */ |