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, |
114f9c96 | 3 | 2005, 2006, 2007, 2008, 2009, 2010 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 | ||
67c1df01 | 44 | # include "syswait.h" |
ed4a3730 | 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 | |
5445ab06 DN |
57 | # ifndef WCONTINUED |
58 | # define WCONTINUED 8 | |
59 | # endif | |
60 | ||
411b80a5 | 61 | #endif /* !WINDOWSNT */ |
aa0b6932 | 62 | |
4e23f2ba | 63 | #undef signal |
46cec291 | 64 | |
42073bfb | 65 | #include <stdarg.h> |
e69233c2 | 66 | #include <ctype.h> |
8f9aaa0a | 67 | #include <stdio.h> |
aa0b6932 | 68 | #include "getopt.h" |
79f13bba DL |
69 | #ifdef HAVE_UNISTD_H |
70 | #include <unistd.h> | |
71 | #endif | |
8f9aaa0a | 72 | |
aa0b6932 JB |
73 | #ifdef WINDOWSNT |
74 | # include <io.h> | |
75 | #else /* not WINDOWSNT */ | |
9f637eea | 76 | # include <pwd.h> |
aa0b6932 | 77 | #endif /* not WINDOWSNT */ |
dc4a4a14 | 78 | #include <sys/stat.h> |
9f637eea | 79 | |
9628b887 | 80 | #include <signal.h> |
4d553a13 | 81 | #include <errno.h> |
9628b887 KL |
82 | |
83 | \f | |
873fbd0b | 84 | char *getenv (const char *), *getwd (char *); |
5b9562c3 | 85 | char *(getcwd) (); |
8f9aaa0a | 86 | |
7ce8671d JB |
87 | #ifdef WINDOWSNT |
88 | char *w32_getenv (); | |
89 | #define egetenv(VAR) w32_getenv(VAR) | |
90 | #else | |
91 | #define egetenv(VAR) getenv(VAR) | |
92 | #endif | |
93 | ||
8f9aaa0a RS |
94 | #ifndef VERSION |
95 | #define VERSION "unspecified" | |
96 | #endif | |
97 | \f | |
aa0b6932 JB |
98 | |
99 | #ifndef EXIT_SUCCESS | |
100 | #define EXIT_SUCCESS 0 | |
101 | #endif | |
102 | ||
103 | #ifndef EXIT_FAILURE | |
104 | #define EXIT_FAILURE 1 | |
105 | #endif | |
106 | ||
107 | #ifndef FALSE | |
108 | #define FALSE 0 | |
109 | #endif | |
110 | ||
111 | #ifndef TRUE | |
112 | #define TRUE 1 | |
113 | #endif | |
114 | ||
115 | #ifndef NO_RETURN | |
116 | #define NO_RETURN | |
117 | #endif | |
bc558f3e JB |
118 | |
119 | /* Additional space when allocating buffers for filenames, etc. */ | |
120 | #define EXTRA_SPACE 100 | |
121 | ||
aa0b6932 | 122 | \f |
8f9aaa0a RS |
123 | /* Name used to invoke this program. */ |
124 | char *progname; | |
125 | ||
0a125897 KL |
126 | /* The second argument to main. */ |
127 | char **main_argv; | |
128 | ||
749ae770 | 129 | /* Nonzero means don't wait for a response from Emacs. --no-wait. */ |
8f9aaa0a RS |
130 | int nowait = 0; |
131 | ||
30be2360 SM |
132 | /* Nonzero means args are expressions to be evaluated. --eval. */ |
133 | int eval = 0; | |
134 | ||
31fa6595 SM |
135 | /* Nonzero means don't open a new frame. Inverse of --create-frame. */ |
136 | int current_frame = 1; | |
92071250 | 137 | |
30be2360 SM |
138 | /* The display on which Emacs should work. --display. */ |
139 | char *display = NULL; | |
140 | ||
0191e222 CY |
141 | /* The parent window ID, if we are opening a frame via XEmbed. */ |
142 | char *parent_id = NULL; | |
143 | ||
9628b887 | 144 | /* Nonzero means open a new Emacs frame on the current terminal. */ |
77134727 | 145 | int tty = 0; |
9628b887 | 146 | |
30be2360 SM |
147 | /* If non-NULL, the name of an editor to fallback to if the server |
148 | is not running. --alternate-editor. */ | |
b03d27bd | 149 | const char *alternate_editor = NULL; |
30be2360 | 150 | |
3db926be | 151 | /* If non-NULL, the filename of the UNIX socket. */ |
254107e4 RS |
152 | char *socket_name = NULL; |
153 | ||
aa0b6932 JB |
154 | /* If non-NULL, the filename of the authentication file. */ |
155 | char *server_file = NULL; | |
156 | ||
c66648e0 JB |
157 | /* PID of the Emacs server process. */ |
158 | int emacs_pid = 0; | |
159 | ||
873fbd0b | 160 | void print_help_and_exit (void) NO_RETURN; |
7f3bff3e | 161 | |
8f9aaa0a RS |
162 | struct option longopts[] = |
163 | { | |
749ae770 | 164 | { "no-wait", no_argument, NULL, 'n' }, |
30be2360 | 165 | { "eval", no_argument, NULL, 'e' }, |
8f9aaa0a RS |
166 | { "help", no_argument, NULL, 'H' }, |
167 | { "version", no_argument, NULL, 'V' }, | |
b28c910d | 168 | { "tty", no_argument, NULL, 't' }, |
dc1cd5f7 | 169 | { "nw", no_argument, NULL, 't' }, |
31fa6595 | 170 | { "create-frame", no_argument, NULL, 'c' }, |
3cf8c6aa | 171 | { "alternate-editor", required_argument, NULL, 'a' }, |
b03d27bd | 172 | #ifndef NO_SOCKETS_IN_FILE_SYSTEM |
254107e4 | 173 | { "socket-name", required_argument, NULL, 's' }, |
b03d27bd | 174 | #endif |
aa0b6932 | 175 | { "server-file", required_argument, NULL, 'f' }, |
0ebec7d3 | 176 | #ifndef WINDOWSNT |
30be2360 | 177 | { "display", required_argument, NULL, 'd' }, |
0ebec7d3 | 178 | #endif |
0191e222 | 179 | { "parent-id", required_argument, NULL, 'p' }, |
30be2360 | 180 | { 0, 0, 0, 0 } |
8f9aaa0a RS |
181 | }; |
182 | ||
974b73e8 KL |
183 | \f |
184 | /* Like malloc but get fatal error if memory is exhausted. */ | |
185 | ||
186 | long * | |
873fbd0b | 187 | xmalloc (unsigned int size) |
974b73e8 KL |
188 | { |
189 | long *result = (long *) malloc (size); | |
190 | if (result == NULL) | |
191 | { | |
192 | perror ("malloc"); | |
193 | exit (EXIT_FAILURE); | |
194 | } | |
195 | return result; | |
196 | } | |
197 | ||
198 | /* Like strdup but get a fatal error if memory is exhausted. */ | |
199 | ||
200 | char * | |
201 | xstrdup (const char *s) | |
202 | { | |
203 | char *result = strdup (s); | |
204 | if (result == NULL) | |
205 | { | |
206 | perror ("strdup"); | |
207 | exit (EXIT_FAILURE); | |
208 | } | |
209 | return result; | |
210 | } | |
211 | ||
212 | /* From sysdep.c */ | |
213 | #if !defined (HAVE_GET_CURRENT_DIR_NAME) || defined (BROKEN_GET_CURRENT_DIR_NAME) | |
214 | ||
cb06b8dc SM |
215 | /* From lisp.h */ |
216 | #ifndef DIRECTORY_SEP | |
217 | #define DIRECTORY_SEP '/' | |
218 | #endif | |
219 | #ifndef IS_DIRECTORY_SEP | |
220 | #define IS_DIRECTORY_SEP(_c_) ((_c_) == DIRECTORY_SEP) | |
221 | #endif | |
222 | #ifndef IS_DEVICE_SEP | |
223 | #ifndef DEVICE_SEP | |
224 | #define IS_DEVICE_SEP(_c_) 0 | |
225 | #else | |
226 | #define IS_DEVICE_SEP(_c_) ((_c_) == DEVICE_SEP) | |
227 | #endif | |
228 | #endif | |
229 | #ifndef IS_ANY_SEP | |
230 | #define IS_ANY_SEP(_c_) (IS_DIRECTORY_SEP (_c_)) | |
231 | #endif | |
232 | ||
233 | ||
974b73e8 | 234 | /* Return the current working directory. Returns NULL on errors. |
5ab73228 | 235 | Any other returned value must be freed with free. This is used |
974b73e8 KL |
236 | only when get_current_dir_name is not defined on the system. */ |
237 | char* | |
238 | get_current_dir_name () | |
239 | { | |
240 | char *buf; | |
241 | char *pwd; | |
242 | struct stat dotstat, pwdstat; | |
243 | /* If PWD is accurate, use it instead of calling getwd. PWD is | |
244 | sometimes a nicer name, and using it may avoid a fatal error if a | |
245 | parent directory is searchable but not readable. */ | |
7ce8671d | 246 | if ((pwd = egetenv ("PWD")) != 0 |
974b73e8 KL |
247 | && (IS_DIRECTORY_SEP (*pwd) || (*pwd && IS_DEVICE_SEP (pwd[1]))) |
248 | && stat (pwd, &pwdstat) == 0 | |
249 | && stat (".", &dotstat) == 0 | |
250 | && dotstat.st_ino == pwdstat.st_ino | |
251 | && dotstat.st_dev == pwdstat.st_dev | |
252 | #ifdef MAXPATHLEN | |
253 | && strlen (pwd) < MAXPATHLEN | |
254 | #endif | |
255 | ) | |
256 | { | |
257 | buf = (char *) xmalloc (strlen (pwd) + 1); | |
258 | if (!buf) | |
259 | return NULL; | |
260 | strcpy (buf, pwd); | |
261 | } | |
262 | #ifdef HAVE_GETCWD | |
263 | else | |
264 | { | |
265 | size_t buf_size = 1024; | |
266 | buf = (char *) xmalloc (buf_size); | |
267 | if (!buf) | |
268 | return NULL; | |
269 | for (;;) | |
270 | { | |
271 | if (getcwd (buf, buf_size) == buf) | |
272 | break; | |
273 | if (errno != ERANGE) | |
274 | { | |
275 | int tmp_errno = errno; | |
276 | free (buf); | |
277 | errno = tmp_errno; | |
278 | return NULL; | |
279 | } | |
280 | buf_size *= 2; | |
281 | buf = (char *) realloc (buf, buf_size); | |
282 | if (!buf) | |
283 | return NULL; | |
284 | } | |
285 | } | |
286 | #else | |
287 | else | |
288 | { | |
289 | /* We need MAXPATHLEN here. */ | |
290 | buf = (char *) xmalloc (MAXPATHLEN + 1); | |
291 | if (!buf) | |
292 | return NULL; | |
293 | if (getwd (buf) == NULL) | |
294 | { | |
295 | int tmp_errno = errno; | |
296 | free (buf); | |
297 | errno = tmp_errno; | |
298 | return NULL; | |
299 | } | |
300 | } | |
301 | #endif | |
302 | return buf; | |
303 | } | |
304 | #endif | |
305 | ||
42073bfb | 306 | #ifdef WINDOWSNT |
7ce8671d JB |
307 | |
308 | #define REG_ROOT "SOFTWARE\\GNU\\Emacs" | |
309 | ||
310 | /* Retrieve an environment variable from the Emacs subkeys of the registry. | |
311 | Return NULL if the variable was not found, or it was empty. | |
312 | This code is based on w32_get_resource (w32.c). */ | |
313 | char * | |
314 | w32_get_resource (predefined, key, type) | |
315 | HKEY predefined; | |
316 | char *key; | |
317 | LPDWORD type; | |
318 | { | |
319 | HKEY hrootkey = NULL; | |
320 | char *result = NULL; | |
321 | DWORD cbData; | |
322 | ||
323 | if (RegOpenKeyEx (predefined, REG_ROOT, 0, KEY_READ, &hrootkey) == ERROR_SUCCESS) | |
324 | { | |
325 | if (RegQueryValueEx (hrootkey, key, NULL, NULL, NULL, &cbData) == ERROR_SUCCESS) | |
326 | { | |
327 | result = (char *) xmalloc (cbData); | |
328 | ||
bc558f3e JB |
329 | if ((RegQueryValueEx (hrootkey, key, NULL, type, result, &cbData) != ERROR_SUCCESS) |
330 | || (*result == 0)) | |
7ce8671d JB |
331 | { |
332 | free (result); | |
333 | result = NULL; | |
334 | } | |
335 | } | |
336 | ||
337 | RegCloseKey (hrootkey); | |
338 | } | |
339 | ||
340 | return result; | |
341 | } | |
342 | ||
343 | /* | |
344 | getenv wrapper for Windows | |
345 | ||
768c0c0f | 346 | This is needed to duplicate Emacs's behavior, which is to look for environment |
7ce8671d JB |
347 | variables in the registry if they don't appear in the environment. |
348 | */ | |
349 | char * | |
350 | w32_getenv (envvar) | |
351 | char *envvar; | |
352 | { | |
353 | char *value; | |
354 | DWORD dwType; | |
355 | ||
356 | if (value = getenv (envvar)) | |
357 | /* Found in the environment. */ | |
358 | return value; | |
359 | ||
360 | if (! (value = w32_get_resource (HKEY_CURRENT_USER, envvar, &dwType)) && | |
361 | ! (value = w32_get_resource (HKEY_LOCAL_MACHINE, envvar, &dwType))) | |
d41784ee EZ |
362 | { |
363 | /* "w32console" is what Emacs on Windows uses for tty-type under -nw. */ | |
364 | if (strcmp (envvar, "TERM") == 0) | |
365 | return xstrdup ("w32console"); | |
366 | /* Found neither in the environment nor in the registry. */ | |
367 | return NULL; | |
368 | } | |
7ce8671d JB |
369 | |
370 | if (dwType == REG_SZ) | |
371 | /* Registry; no need to expand. */ | |
372 | return value; | |
373 | ||
374 | if (dwType == REG_EXPAND_SZ) | |
375 | { | |
376 | DWORD size; | |
377 | ||
378 | if (size = ExpandEnvironmentStrings (value, NULL, 0)) | |
379 | { | |
380 | char *buffer = (char *) xmalloc (size); | |
381 | if (ExpandEnvironmentStrings (value, buffer, size)) | |
382 | { | |
383 | /* Found and expanded. */ | |
384 | free (value); | |
385 | return buffer; | |
386 | } | |
387 | ||
388 | /* Error expanding. */ | |
389 | free (buffer); | |
390 | } | |
391 | } | |
392 | ||
393 | /* Not the right type, or not correctly expanded. */ | |
394 | free (value); | |
395 | return NULL; | |
396 | } | |
397 | ||
ff90fbde JR |
398 | void |
399 | w32_set_user_model_id () | |
400 | { | |
401 | HMODULE shell; | |
0a3472c7 | 402 | HRESULT (WINAPI * set_user_model) (wchar_t * id); |
ff90fbde JR |
403 | |
404 | /* On Windows 7 and later, we need to set the user model ID | |
405 | to associate emacsclient launched files with Emacs frames | |
406 | in the UI. */ | |
407 | shell = LoadLibrary("shell32.dll"); | |
408 | if (shell) | |
409 | { | |
410 | set_user_model | |
411 | = (void *) GetProcAddress (shell, | |
412 | "SetCurrentProcessExplicitAppUserModelID"); | |
413 | /* If the function is defined, then we are running on Windows 7 | |
414 | or newer, and the UI uses this to group related windows | |
415 | together. Since emacs, runemacs, emacsclient are related, we | |
416 | want them grouped even though the executables are different, | |
417 | so we need to set a consistent ID between them. */ | |
418 | if (set_user_model) | |
419 | set_user_model (L"GNU.Emacs"); | |
420 | ||
421 | FreeLibrary (shell); | |
422 | } | |
423 | } | |
424 | ||
42073bfb | 425 | int |
f0384499 | 426 | w32_window_app () |
42073bfb JB |
427 | { |
428 | static int window_app = -1; | |
429 | char szTitle[MAX_PATH]; | |
430 | ||
431 | if (window_app < 0) | |
dbf60b07 JR |
432 | { |
433 | /* Checking for STDOUT does not work; it's a valid handle also in | |
434 | nonconsole apps. Testing for the console title seems to work. */ | |
435 | window_app = (GetConsoleTitleA (szTitle, MAX_PATH) == 0); | |
436 | if (window_app) | |
437 | InitCommonControls(); | |
438 | } | |
42073bfb JB |
439 | |
440 | return window_app; | |
441 | } | |
105faa84 DN |
442 | |
443 | /* | |
cb06b8dc | 444 | execvp wrapper for Windows. Quotes arguments with embedded spaces. |
105faa84 DN |
445 | |
446 | This is necessary due to the broken implementation of exec* routines in | |
447 | the Microsoft libraries: they concatenate the arguments together without | |
448 | quoting special characters, and pass the result to CreateProcess, with | |
449 | predictably bad results. By contrast, Posix execvp passes the arguments | |
450 | directly into the argv array of the child process. | |
451 | */ | |
452 | int | |
453 | w32_execvp (path, argv) | |
454 | char *path; | |
455 | char **argv; | |
456 | { | |
457 | int i; | |
458 | ||
459 | /* Required to allow a .BAT script as alternate editor. */ | |
460 | argv[0] = (char *) alternate_editor; | |
461 | ||
462 | for (i = 0; argv[i]; i++) | |
463 | if (strchr (argv[i], ' ')) | |
464 | { | |
465 | char *quoted = alloca (strlen (argv[i]) + 3); | |
466 | sprintf (quoted, "\"%s\"", argv[i]); | |
467 | argv[i] = quoted; | |
468 | } | |
469 | ||
470 | return execvp (path, argv); | |
471 | } | |
472 | ||
473 | #undef execvp | |
474 | #define execvp w32_execvp | |
475 | ||
d41784ee EZ |
476 | /* Emulation of ttyname for Windows. */ |
477 | char * | |
478 | ttyname (int fd) | |
479 | { | |
480 | return "CONOUT$"; | |
481 | } | |
482 | ||
105faa84 | 483 | #endif /* WINDOWSNT */ |
42073bfb | 484 | |
f387c1ee JB |
485 | /* Display a normal or error message. |
486 | On Windows, use a message box if compiled as a Windows app. */ | |
42073bfb JB |
487 | void |
488 | message (int is_error, char *message, ...) | |
489 | { | |
c66648e0 | 490 | char msg [2048]; |
42073bfb JB |
491 | va_list args; |
492 | ||
493 | va_start (args, message); | |
42073bfb JB |
494 | vsprintf (msg, message, args); |
495 | va_end (args); | |
496 | ||
497 | #ifdef WINDOWSNT | |
498 | if (w32_window_app ()) | |
499 | { | |
500 | if (is_error) | |
501 | MessageBox (NULL, msg, "Emacsclient ERROR", MB_ICONERROR); | |
502 | else | |
503 | MessageBox (NULL, msg, "Emacsclient", MB_ICONINFORMATION); | |
504 | } | |
505 | else | |
506 | #endif | |
9219db75 JB |
507 | { |
508 | FILE *f = is_error ? stderr : stdout; | |
509 | ||
510 | fputs (msg, f); | |
511 | fflush (f); | |
512 | } | |
42073bfb JB |
513 | } |
514 | ||
8f9aaa0a | 515 | /* Decode the options from argv and argc. |
5212210c | 516 | The global variable `optind' will say how many arguments we used up. */ |
8f9aaa0a | 517 | |
5212210c | 518 | void |
873fbd0b | 519 | decode_options (int argc, char **argv) |
8f9aaa0a | 520 | { |
7ce8671d | 521 | alternate_editor = egetenv ("ALTERNATE_EDITOR"); |
0ea5797a | 522 | |
8f9aaa0a RS |
523 | while (1) |
524 | { | |
dc1cd5f7 | 525 | int opt = getopt_long_only (argc, argv, |
b03d27bd | 526 | #ifndef NO_SOCKETS_IN_FILE_SYSTEM |
974b73e8 | 527 | "VHnea:s:f:d:tc", |
b03d27bd | 528 | #else |
974b73e8 | 529 | "VHnea:f:d:tc", |
b03d27bd | 530 | #endif |
974b73e8 | 531 | longopts, 0); |
8f9aaa0a RS |
532 | |
533 | if (opt == EOF) | |
534 | break; | |
535 | ||
536 | switch (opt) | |
537 | { | |
538 | case 0: | |
539 | /* If getopt returns 0, then it has already processed a | |
540 | long-named option. We should do nothing. */ | |
541 | break; | |
e69233c2 | 542 | |
97e3214d GM |
543 | case 'a': |
544 | alternate_editor = optarg; | |
545 | break; | |
e69233c2 | 546 | |
b03d27bd | 547 | #ifndef NO_SOCKETS_IN_FILE_SYSTEM |
254107e4 RS |
548 | case 's': |
549 | socket_name = optarg; | |
550 | break; | |
b03d27bd | 551 | #endif |
254107e4 | 552 | |
aa0b6932 JB |
553 | case 'f': |
554 | server_file = optarg; | |
555 | break; | |
254107e4 | 556 | |
0ea5797a SM |
557 | /* We used to disallow this argument in w32, but it seems better |
558 | to allow it, for the occasional case where the user is | |
559 | connecting with a w32 client to a server compiled with X11 | |
560 | support. */ | |
30be2360 SM |
561 | case 'd': |
562 | display = optarg; | |
563 | break; | |
564 | ||
8f9aaa0a RS |
565 | case 'n': |
566 | nowait = 1; | |
567 | break; | |
568 | ||
30be2360 SM |
569 | case 'e': |
570 | eval = 1; | |
571 | break; | |
572 | ||
8f9aaa0a | 573 | case 'V': |
42073bfb | 574 | message (FALSE, "emacsclient %s\n", VERSION); |
65396510 | 575 | exit (EXIT_SUCCESS); |
8f9aaa0a | 576 | break; |
46cec291 | 577 | |
819b8f00 | 578 | case 't': |
77134727 | 579 | tty = 1; |
c1b8e896 | 580 | current_frame = 0; |
77134727 KL |
581 | break; |
582 | ||
e5299d8d | 583 | case 'c': |
31fa6595 | 584 | current_frame = 0; |
9628b887 | 585 | break; |
0b0d3e0b | 586 | |
0191e222 CY |
587 | case 'p': |
588 | parent_id = optarg; | |
589 | current_frame = 0; | |
590 | break; | |
591 | ||
8f9aaa0a | 592 | case 'H': |
8f9aaa0a | 593 | print_help_and_exit (); |
20c396e8 JB |
594 | break; |
595 | ||
596 | default: | |
42073bfb | 597 | message (TRUE, "Try `%s --help' for more information\n", progname); |
65396510 | 598 | exit (EXIT_FAILURE); |
20c396e8 | 599 | break; |
8f9aaa0a RS |
600 | } |
601 | } | |
9628b887 | 602 | |
273b9028 CY |
603 | /* If the -c option is used (without -t) and no --display argument |
604 | is provided, try $DISPLAY. | |
605 | Without the -c option, we used to set `display' to $DISPLAY by | |
606 | default, but this changed the default behavior and is sometimes | |
607 | inconvenient. So we force users to use "--display $DISPLAY" if | |
608 | they want Emacs to connect to their current display. */ | |
09317bf4 | 609 | if (!current_frame && !tty && !display) |
e7534fc4 AR |
610 | { |
611 | display = egetenv ("DISPLAY"); | |
612 | #ifdef NS_IMPL_COCOA | |
613 | /* Under Cocoa, we don't really use displays the same way as in X, | |
614 | so provide a dummy. */ | |
615 | if (!display || strlen (display) == 0) | |
616 | display = "ns"; | |
617 | #endif | |
618 | } | |
9997dc15 | 619 | |
273b9028 | 620 | /* A null-string display is invalid. */ |
0ea5797a SM |
621 | if (display && strlen (display) == 0) |
622 | display = NULL; | |
623 | ||
273b9028 CY |
624 | /* If no display is available, new frames are tty frames. */ |
625 | if (!current_frame && !display) | |
92071250 | 626 | tty = 1; |
c0f342ab | 627 | |
b8ccaf6f | 628 | /* --no-wait implies --current-frame on ttys when there are file |
273b9028 | 629 | arguments or expressions given. */ |
b8ccaf6f | 630 | if (nowait && tty && argc - optind > 0) |
92071250 | 631 | current_frame = 1; |
802bdb3c DN |
632 | |
633 | #ifdef WINDOWSNT | |
69157c99 | 634 | if (alternate_editor && alternate_editor[0] == '\0') |
802bdb3c DN |
635 | { |
636 | message (TRUE, "--alternate-editor argument or ALTERNATE_EDITOR variable cannot be\n\ | |
637 | an empty string"); | |
638 | exit (EXIT_FAILURE); | |
639 | } | |
640 | #endif /* WINDOWSNT */ | |
8f9aaa0a RS |
641 | } |
642 | ||
974b73e8 | 643 | \f |
7f3bff3e | 644 | void |
873fbd0b | 645 | print_help_and_exit (void) |
8f9aaa0a | 646 | { |
c0f342ab JB |
647 | /* Spaces and tabs are significant in this message; they're chosen so the |
648 | message aligns properly both in a tty and in a Windows message box. | |
649 | Please try to preserve them; otherwise the output is very hard to read | |
650 | when using emacsclientw. */ | |
42073bfb | 651 | message (FALSE, |
974b73e8 | 652 | "Usage: %s [OPTIONS] FILE...\n\ |
30be2360 SM |
653 | Tell the Emacs server to visit the specified files.\n\ |
654 | Every FILE can be either just a FILENAME or [+LINE[:COLUMN]] FILENAME.\n\ | |
20c396e8 | 655 | \n\ |
30be2360 | 656 | The following OPTIONS are accepted:\n\ |
c0f342ab JB |
657 | -V, --version Just print version info and return\n\ |
658 | -H, --help Print this usage information message\n\ | |
dc1cd5f7 | 659 | -nw, -t, --tty Open a new Emacs frame on the current terminal\n\ |
c4b858e3 | 660 | -c, --create-frame Create a new frame instead of trying to\n\ |
9dfda22f | 661 | use the current Emacs frame\n\ |
c0f342ab | 662 | -e, --eval Evaluate the FILE arguments as ELisp expressions\n\ |
d07529f3 | 663 | -n, --no-wait Don't wait for the server to return\n\ |
24d5010d | 664 | -d DISPLAY, --display=DISPLAY\n\ |
0191e222 CY |
665 | Visit the file in the given display\n\ |
666 | --parent-id=ID Open in parent window ID, via XEmbed\n" | |
aa0b6932 | 667 | #ifndef NO_SOCKETS_IN_FILE_SYSTEM |
24d5010d | 668 | "-s SOCKET, --socket-name=SOCKET\n\ |
9dfda22f | 669 | Set filename of the UNIX socket for communication\n" |
aa0b6932 | 670 | #endif |
24d5010d | 671 | "-f SERVER, --server-file=SERVER\n\ |
9dfda22f | 672 | Set filename of the TCP authentication file\n\ |
24d5010d | 673 | -a EDITOR, --alternate-editor=EDITOR\n\ |
9dfda22f | 674 | Editor to fallback to if the server is not running\n" |
6133a1a9 | 675 | #ifndef WINDOWSNT |
c3f995a2 JB |
676 | " If EDITOR is the empty string, start Emacs in daemon\n\ |
677 | mode and try connecting again\n" | |
6133a1a9 | 678 | #endif /* not WINDOWSNT */ |
c3f995a2 | 679 | "\n\ |
5f54cae6 | 680 | Report bugs with M-x report-emacs-bug.\n", progname); |
65396510 | 681 | exit (EXIT_SUCCESS); |
8f9aaa0a | 682 | } |
5212210c | 683 | |
aa0b6932 JB |
684 | /* |
685 | Try to run a different command, or --if no alternate editor is | |
686 | defined-- exit with an errorcode. | |
cb06b8dc | 687 | Uses argv, but gets it from the global variable main_argv. |
aa0b6932 JB |
688 | */ |
689 | void | |
974b73e8 | 690 | fail (void) |
9002956f | 691 | { |
aa0b6932 | 692 | if (alternate_editor) |
9002956f | 693 | { |
aa0b6932 | 694 | int i = optind - 1; |
4472aef4 | 695 | |
974b73e8 | 696 | execvp (alternate_editor, main_argv + i); |
42073bfb | 697 | message (TRUE, "%s: error executing alternate editor \"%s\"\n", |
974b73e8 | 698 | progname, alternate_editor); |
9002956f | 699 | } |
aa0b6932 | 700 | exit (EXIT_FAILURE); |
9002956f KL |
701 | } |
702 | ||
aa0b6932 | 703 | \f |
1e7823d0 | 704 | #if !defined (HAVE_SOCKETS) || !defined (HAVE_INET_SOCKETS) |
9002956f | 705 | |
aa0b6932 JB |
706 | int |
707 | main (argc, argv) | |
708 | int argc; | |
709 | char **argv; | |
9002956f | 710 | { |
974b73e8 KL |
711 | main_argv = argv; |
712 | progname = argv[0]; | |
713 | message (TRUE, "%s: Sorry, the Emacs server is supported only\n" | |
c0f342ab | 714 | "on systems with Berkeley sockets.\n", |
aa0b6932 | 715 | argv[0]); |
974b73e8 | 716 | fail (); |
9002956f KL |
717 | } |
718 | ||
1e7823d0 | 719 | #else /* HAVE_SOCKETS && HAVE_INET_SOCKETS */ |
2828d5f9 | 720 | |
aa0b6932 JB |
721 | #ifdef WINDOWSNT |
722 | # include <winsock2.h> | |
2828d5f9 | 723 | #else |
aa0b6932 JB |
724 | # include <sys/types.h> |
725 | # include <sys/socket.h> | |
726 | # include <sys/un.h> | |
aa0b6932 JB |
727 | #endif |
728 | ||
729 | #define AUTH_KEY_LENGTH 64 | |
730 | #define SEND_BUFFER_SIZE 4096 | |
731 | ||
873fbd0b | 732 | extern char *strerror (int); |
aa0b6932 JB |
733 | |
734 | /* Buffer to accumulate data to send in TCP connections. */ | |
735 | char send_buffer[SEND_BUFFER_SIZE + 1]; | |
736 | int sblen = 0; /* Fill pointer for the send buffer. */ | |
4b7b77f6 JR |
737 | /* Socket used to communicate with the Emacs server process. */ |
738 | HSOCKET emacs_socket = 0; | |
aa0b6932 | 739 | |
d22b00e5 JR |
740 | /* On Windows, the socket library was historically separate from the standard |
741 | C library, so errors are handled differently. */ | |
742 | void | |
873fbd0b | 743 | sock_err_message (char *function_name) |
d22b00e5 JR |
744 | { |
745 | #ifdef WINDOWSNT | |
746 | char* msg = NULL; | |
747 | ||
748 | FormatMessage (FORMAT_MESSAGE_FROM_SYSTEM | |
749 | | FORMAT_MESSAGE_ALLOCATE_BUFFER | |
750 | | FORMAT_MESSAGE_ARGUMENT_ARRAY, | |
751 | NULL, WSAGetLastError (), 0, (LPTSTR)&msg, 0, NULL); | |
752 | ||
753 | message (TRUE, "%s: %s: %s\n", progname, function_name, msg); | |
754 | ||
755 | LocalFree (msg); | |
756 | #else | |
757 | message (TRUE, "%s: %s: %s\n", progname, function_name, strerror (errno)); | |
758 | #endif | |
759 | } | |
760 | ||
761 | ||
aa0b6932 JB |
762 | /* Let's send the data to Emacs when either |
763 | - the data ends in "\n", or | |
764 | - the buffer is full (but this shouldn't happen) | |
765 | Otherwise, we just accumulate it. */ | |
b03d27bd | 766 | void |
3a35a84c | 767 | send_to_emacs (HSOCKET s, char *data) |
aa0b6932 JB |
768 | { |
769 | while (data) | |
2828d5f9 | 770 | { |
aa0b6932 JB |
771 | int dlen = strlen (data); |
772 | if (dlen + sblen >= SEND_BUFFER_SIZE) | |
773 | { | |
774 | int part = SEND_BUFFER_SIZE - sblen; | |
775 | strncpy (&send_buffer[sblen], data, part); | |
776 | data += part; | |
777 | sblen = SEND_BUFFER_SIZE; | |
778 | } | |
779 | else if (dlen) | |
780 | { | |
781 | strcpy (&send_buffer[sblen], data); | |
782 | data = NULL; | |
783 | sblen += dlen; | |
784 | } | |
785 | else | |
786 | break; | |
787 | ||
788 | if (sblen == SEND_BUFFER_SIZE | |
789 | || (sblen > 0 && send_buffer[sblen-1] == '\n')) | |
790 | { | |
791 | int sent = send (s, send_buffer, sblen, 0); | |
792 | if (sent != sblen) | |
793 | strcpy (send_buffer, &send_buffer[sent]); | |
794 | sblen -= sent; | |
795 | } | |
2828d5f9 | 796 | } |
2828d5f9 | 797 | } |
2828d5f9 KL |
798 | |
799 | \f | |
0b0d3e0b | 800 | /* In STR, insert a & before each &, each space, each newline, and |
a4cf2096 | 801 | any initial -. Change spaces to underscores, too, so that the |
0b0d3e0b KL |
802 | return value never contains a space. |
803 | ||
3a35a84c | 804 | Does not change the string. Outputs the result to S. */ |
87209357 | 805 | void |
3a35a84c | 806 | quote_argument (HSOCKET s, char *str) |
5212210c | 807 | { |
9002956f | 808 | char *copy = (char *) xmalloc (strlen (str) * 2 + 1); |
5212210c RS |
809 | char *p, *q; |
810 | ||
0b0d3e0b | 811 | p = str; |
5212210c RS |
812 | q = copy; |
813 | while (*p) | |
814 | { | |
815 | if (*p == ' ') | |
816 | { | |
f1db6a73 | 817 | *q++ = '&'; |
5212210c RS |
818 | *q++ = '_'; |
819 | p++; | |
820 | } | |
3cf8c6aa SM |
821 | else if (*p == '\n') |
822 | { | |
823 | *q++ = '&'; | |
824 | *q++ = 'n'; | |
825 | p++; | |
826 | } | |
5212210c RS |
827 | else |
828 | { | |
0b0d3e0b | 829 | if (*p == '&' || (*p == '-' && p == str)) |
f1db6a73 | 830 | *q++ = '&'; |
5212210c RS |
831 | *q++ = *p++; |
832 | } | |
833 | } | |
f1db6a73 | 834 | *q++ = 0; |
5212210c | 835 | |
486ba65f | 836 | send_to_emacs (s, copy); |
87209357 EZ |
837 | |
838 | free (copy); | |
5212210c | 839 | } |
0c76956f | 840 | |
0b0d3e0b KL |
841 | |
842 | /* The inverse of quote_argument. Removes quoting in string STR by | |
843 | modifying the string in place. Returns STR. */ | |
844 | ||
845 | char * | |
873fbd0b | 846 | unquote_argument (char *str) |
0b0d3e0b KL |
847 | { |
848 | char *p, *q; | |
849 | ||
850 | if (! str) | |
851 | return str; | |
852 | ||
853 | p = str; | |
854 | q = str; | |
855 | while (*p) | |
856 | { | |
857 | if (*p == '&') | |
858 | { | |
859 | p++; | |
860 | if (*p == '&') | |
861 | *p = '&'; | |
862 | else if (*p == '_') | |
863 | *p = ' '; | |
864 | else if (*p == 'n') | |
865 | *p = '\n'; | |
866 | else if (*p == '-') | |
867 | *p = '-'; | |
868 | } | |
869 | *q++ = *p++; | |
870 | } | |
871 | *q = 0; | |
872 | return str; | |
873 | } | |
874 | ||
8f9aaa0a | 875 | \f |
b03d27bd | 876 | int |
873fbd0b | 877 | file_name_absolute_p (const unsigned char *filename) |
b03d27bd JB |
878 | { |
879 | /* Sanity check, it shouldn't happen. */ | |
880 | if (! filename) return FALSE; | |
881 | ||
882 | /* /xxx is always an absolute path. */ | |
883 | if (filename[0] == '/') return TRUE; | |
884 | ||
885 | /* Empty filenames (which shouldn't happen) are relative. */ | |
886 | if (filename[0] == '\0') return FALSE; | |
887 | ||
888 | #ifdef WINDOWSNT | |
71b8f735 | 889 | /* X:\xxx is always absolute. */ |
5f7a4874 | 890 | if (isalpha (filename[0]) |
cb0297bb | 891 | && filename[1] == ':' && (filename[2] == '\\' || filename[2] == '/')) |
b03d27bd JB |
892 | return TRUE; |
893 | ||
894 | /* Both \xxx and \\xxx\yyy are absolute. */ | |
895 | if (filename[0] == '\\') return TRUE; | |
896 | #endif | |
897 | ||
898 | return FALSE; | |
899 | } | |
900 | ||
aa0b6932 | 901 | #ifdef WINDOWSNT |
f0384499 | 902 | /* Wrapper to make WSACleanup a cdecl, as required by atexit. */ |
b03d27bd JB |
903 | void |
904 | __cdecl close_winsock () | |
aa0b6932 JB |
905 | { |
906 | WSACleanup (); | |
907 | } | |
0c76956f | 908 | |
b03d27bd JB |
909 | /* Initialize the WinSock2 library. */ |
910 | void | |
911 | initialize_sockets () | |
0c76956f | 912 | { |
aa0b6932 JB |
913 | WSADATA wsaData; |
914 | ||
aa0b6932 JB |
915 | if (WSAStartup (MAKEWORD (2, 0), &wsaData)) |
916 | { | |
78da39c6 | 917 | message (TRUE, "%s: error initializing WinSock2\n", progname); |
aa0b6932 JB |
918 | exit (EXIT_FAILURE); |
919 | } | |
920 | ||
921 | atexit (close_winsock); | |
0c76956f | 922 | } |
e35fc962 | 923 | #endif /* WINDOWSNT */ |
974b73e8 | 924 | |
8f9aaa0a | 925 | \f |
97e3214d | 926 | /* |
aa0b6932 | 927 | * Read the information needed to set up a TCP comm channel with |
434a6c5d | 928 | * the Emacs server: host, port, pid and authentication string. |
0e0dced5 | 929 | */ |
b03d27bd | 930 | int |
873fbd0b | 931 | get_server_config (struct sockaddr_in *server, char *authentication) |
97e3214d | 932 | { |
aa0b6932 JB |
933 | char dotted[32]; |
934 | char *port; | |
434a6c5d | 935 | char *pid; |
b03d27bd | 936 | FILE *config = NULL; |
aa0b6932 | 937 | |
b03d27bd JB |
938 | if (file_name_absolute_p (server_file)) |
939 | config = fopen (server_file, "rb"); | |
940 | else | |
97e3214d | 941 | { |
7ce8671d | 942 | char *home = egetenv ("HOME"); |
88b46d84 | 943 | |
aa0b6932 JB |
944 | if (home) |
945 | { | |
bc558f3e JB |
946 | char *path = alloca (strlen (home) + strlen (server_file) |
947 | + EXTRA_SPACE); | |
aa0b6932 JB |
948 | sprintf (path, "%s/.emacs.d/server/%s", home, server_file); |
949 | config = fopen (path, "rb"); | |
950 | } | |
88b46d84 | 951 | #ifdef WINDOWSNT |
7ce8671d | 952 | if (!config && (home = egetenv ("APPDATA"))) |
88b46d84 | 953 | { |
bc558f3e JB |
954 | char *path = alloca (strlen (home) + strlen (server_file) |
955 | + EXTRA_SPACE); | |
88b46d84 JB |
956 | sprintf (path, "%s/.emacs.d/server/%s", home, server_file); |
957 | config = fopen (path, "rb"); | |
958 | } | |
959 | #endif | |
aa0b6932 JB |
960 | } |
961 | ||
962 | if (! config) | |
963 | return FALSE; | |
964 | ||
965 | if (fgets (dotted, sizeof dotted, config) | |
434a6c5d JB |
966 | && (port = strchr (dotted, ':')) |
967 | && (pid = strchr (port, ' '))) | |
aa0b6932 JB |
968 | { |
969 | *port++ = '\0'; | |
434a6c5d | 970 | *pid++ = '\0'; |
97e3214d GM |
971 | } |
972 | else | |
973 | { | |
78da39c6 | 974 | message (TRUE, "%s: invalid configuration info\n", progname); |
65396510 | 975 | exit (EXIT_FAILURE); |
97e3214d | 976 | } |
97e3214d | 977 | |
aa0b6932 JB |
978 | server->sin_family = AF_INET; |
979 | server->sin_addr.s_addr = inet_addr (dotted); | |
980 | server->sin_port = htons (atoi (port)); | |
97e3214d | 981 | |
aa0b6932 JB |
982 | if (! fread (authentication, AUTH_KEY_LENGTH, 1, config)) |
983 | { | |
78da39c6 | 984 | message (TRUE, "%s: cannot read authentication info\n", progname); |
aa0b6932 JB |
985 | exit (EXIT_FAILURE); |
986 | } | |
46cec291 | 987 | |
aa0b6932 | 988 | fclose (config); |
97e3214d | 989 | |
c66648e0 | 990 | emacs_pid = atoi (pid); |
434a6c5d | 991 | |
aa0b6932 | 992 | return TRUE; |
97e3214d GM |
993 | } |
994 | ||
aa0b6932 | 995 | HSOCKET |
873fbd0b | 996 | set_tcp_socket (void) |
aa0b6932 JB |
997 | { |
998 | HSOCKET s; | |
999 | struct sockaddr_in server; | |
aa0b6932 JB |
1000 | struct linger l_arg = {1, 1}; |
1001 | char auth_string[AUTH_KEY_LENGTH + 1]; | |
9628b887 | 1002 | |
aa0b6932 JB |
1003 | if (! get_server_config (&server, auth_string)) |
1004 | return INVALID_SOCKET; | |
1005 | ||
b03d27bd | 1006 | if (server.sin_addr.s_addr != inet_addr ("127.0.0.1")) |
9219db75 | 1007 | message (FALSE, "%s: connected to remote socket at %s\n", |
b03d27bd JB |
1008 | progname, inet_ntoa (server.sin_addr)); |
1009 | ||
aa0b6932 JB |
1010 | /* |
1011 | * Open up an AF_INET socket | |
1012 | */ | |
1013 | if ((s = socket (AF_INET, SOCK_STREAM, IPPROTO_TCP)) < 0) | |
1014 | { | |
d22b00e5 | 1015 | sock_err_message ("socket"); |
aa0b6932 JB |
1016 | return INVALID_SOCKET; |
1017 | } | |
1018 | ||
1019 | /* | |
1020 | * Set up the socket | |
1021 | */ | |
1022 | if (connect (s, (struct sockaddr *) &server, sizeof server) < 0) | |
1023 | { | |
d22b00e5 | 1024 | sock_err_message ("connect"); |
aa0b6932 JB |
1025 | return INVALID_SOCKET; |
1026 | } | |
1027 | ||
aa0b6932 JB |
1028 | setsockopt (s, SOL_SOCKET, SO_LINGER, (char *) &l_arg, sizeof l_arg); |
1029 | ||
1030 | /* | |
1031 | * Send the authentication | |
1032 | */ | |
1033 | auth_string[AUTH_KEY_LENGTH] = '\0'; | |
1034 | ||
486ba65f JR |
1035 | send_to_emacs (s, "-auth "); |
1036 | send_to_emacs (s, auth_string); | |
5ab73228 | 1037 | send_to_emacs (s, " "); |
aa0b6932 JB |
1038 | |
1039 | return s; | |
1040 | } | |
1041 | ||
b2ff54a0 JR |
1042 | |
1043 | /* Returns 1 if PREFIX is a prefix of STRING. */ | |
1044 | static int | |
1045 | strprefix (char *prefix, char *string) | |
1046 | { | |
cb06b8dc | 1047 | return !strncmp (prefix, string, strlen (prefix)); |
b2ff54a0 JR |
1048 | } |
1049 | ||
a336ee5b CY |
1050 | /* Get tty name and type. If successful, return the type in TTY_TYPE |
1051 | and the name in TTY_NAME, and return 1. Otherwise, fail if NOABORT | |
1052 | is zero, or return 0 if NOABORT is non-zero. */ | |
1053 | ||
1054 | int | |
1055 | find_tty (char **tty_type, char **tty_name, int noabort) | |
1056 | { | |
1057 | char *type = egetenv ("TERM"); | |
1058 | char *name = ttyname (fileno (stdout)); | |
1059 | ||
1060 | if (!name) | |
1061 | { | |
1062 | if (noabort) | |
1063 | return 0; | |
1064 | else | |
1065 | { | |
1066 | message (TRUE, "%s: could not get terminal name\n", progname); | |
1067 | fail (); | |
1068 | } | |
1069 | } | |
1070 | ||
1071 | if (!type) | |
1072 | { | |
1073 | if (noabort) | |
1074 | return 0; | |
1075 | else | |
1076 | { | |
1077 | message (TRUE, "%s: please set the TERM variable to your terminal type\n", | |
1078 | progname); | |
1079 | fail (); | |
1080 | } | |
1081 | } | |
1082 | ||
1083 | if (strcmp (type, "eterm") == 0) | |
1084 | { | |
1085 | if (noabort) | |
1086 | return 0; | |
1087 | else | |
1088 | { | |
1089 | /* This causes nasty, MULTI_KBOARD-related input lockouts. */ | |
1090 | message (TRUE, "%s: opening a frame in an Emacs term buffer" | |
1091 | " is not supported\n", progname); | |
1092 | fail (); | |
1093 | } | |
1094 | } | |
1095 | ||
1096 | *tty_name = name; | |
1097 | *tty_type = type; | |
1098 | return 1; | |
1099 | } | |
1100 | ||
b2ff54a0 | 1101 | |
aa0b6932 | 1102 | #if !defined (NO_SOCKETS_IN_FILE_SYSTEM) |
46cec291 | 1103 | |
9f637eea GM |
1104 | /* Three possibilities: |
1105 | 2 - can't be `stat'ed (sets errno) | |
1106 | 1 - isn't owned by us | |
1107 | 0 - success: none of the above */ | |
1108 | ||
1109 | static int | |
873fbd0b | 1110 | socket_status (char *socket_name) |
9f637eea GM |
1111 | { |
1112 | struct stat statbfr; | |
1113 | ||
1114 | if (stat (socket_name, &statbfr) == -1) | |
1115 | return 2; | |
1116 | ||
1117 | if (statbfr.st_uid != geteuid ()) | |
1118 | return 1; | |
0b0d3e0b | 1119 | |
9f637eea GM |
1120 | return 0; |
1121 | } | |
1122 | ||
974b73e8 | 1123 | \f |
da8e1115 KL |
1124 | /* A signal handler that passes the signal to the Emacs process. |
1125 | Useful for SIGWINCH. */ | |
1126 | ||
9628b887 | 1127 | SIGTYPE |
428a555e | 1128 | pass_signal_to_emacs (int signalnum) |
9628b887 KL |
1129 | { |
1130 | int old_errno = errno; | |
1131 | ||
9f729af5 | 1132 | if (emacs_pid) |
428a555e | 1133 | kill (emacs_pid, signalnum); |
9f729af5 | 1134 | |
428a555e | 1135 | signal (signalnum, pass_signal_to_emacs); |
9f729af5 KL |
1136 | errno = old_errno; |
1137 | } | |
1138 | ||
0b0d3e0b KL |
1139 | /* Signal handler for SIGCONT; notify the Emacs process that it can |
1140 | now resume our tty frame. */ | |
1141 | ||
1142 | SIGTYPE | |
1143 | handle_sigcont (int signalnum) | |
1144 | { | |
1145 | int old_errno = errno; | |
1146 | ||
1147 | if (tcgetpgrp (1) == getpgrp ()) | |
1148 | { | |
1149 | /* We are in the foreground. */ | |
486ba65f | 1150 | send_to_emacs (emacs_socket, "-resume \n"); |
0b0d3e0b KL |
1151 | } |
1152 | else | |
1153 | { | |
1154 | /* We are in the background; cancel the continue. */ | |
1155 | kill (getpid (), SIGSTOP); | |
1156 | } | |
c6c53c3e KL |
1157 | |
1158 | signal (signalnum, handle_sigcont); | |
0b0d3e0b KL |
1159 | errno = old_errno; |
1160 | } | |
1161 | ||
1162 | /* Signal handler for SIGTSTP; notify the Emacs process that we are | |
1163 | going to sleep. Normally the suspend is initiated by Emacs via | |
1164 | server-handle-suspend-tty, but if the server gets out of sync with | |
1165 | reality, we may get a SIGTSTP on C-z. Handling this signal and | |
1166 | notifying Emacs about it should get things under control again. */ | |
1167 | ||
1168 | SIGTYPE | |
1169 | handle_sigtstp (int signalnum) | |
1170 | { | |
1171 | int old_errno = errno; | |
1172 | sigset_t set; | |
c0f342ab | 1173 | |
90843190 | 1174 | if (emacs_socket) |
486ba65f | 1175 | send_to_emacs (emacs_socket, "-suspend \n"); |
0b0d3e0b | 1176 | |
5ab73228 | 1177 | /* Unblock this signal and call the default handler by temporarily |
0b0d3e0b KL |
1178 | changing the handler and resignalling. */ |
1179 | sigprocmask (SIG_BLOCK, NULL, &set); | |
1180 | sigdelset (&set, signalnum); | |
1181 | signal (signalnum, SIG_DFL); | |
1182 | kill (getpid (), signalnum); | |
1183 | sigprocmask (SIG_SETMASK, &set, NULL); /* Let's the above signal through. */ | |
1184 | signal (signalnum, handle_sigtstp); | |
1185 | ||
1186 | errno = old_errno; | |
1187 | } | |
273b9028 CY |
1188 | |
1189 | ||
da8e1115 | 1190 | /* Set up signal handlers before opening a frame on the current tty. */ |
0b0d3e0b | 1191 | |
4d553a13 KL |
1192 | void |
1193 | init_signals (void) | |
9628b887 KL |
1194 | { |
1195 | /* Set up signal handlers. */ | |
428a555e | 1196 | signal (SIGWINCH, pass_signal_to_emacs); |
4ca927b4 KL |
1197 | |
1198 | /* Don't pass SIGINT and SIGQUIT to Emacs, because it has no way of | |
1199 | deciding which terminal the signal came from. C-g is now a | |
1200 | normal input event on secondary terminals. */ | |
1201 | #if 0 | |
428a555e KL |
1202 | signal (SIGINT, pass_signal_to_emacs); |
1203 | signal (SIGQUIT, pass_signal_to_emacs); | |
4ca927b4 | 1204 | #endif |
0b0d3e0b KL |
1205 | |
1206 | signal (SIGCONT, handle_sigcont); | |
1207 | signal (SIGTSTP, handle_sigtstp); | |
1208 | signal (SIGTTOU, handle_sigtstp); | |
9628b887 KL |
1209 | } |
1210 | ||
46cec291 | 1211 | |
aa0b6932 | 1212 | HSOCKET |
873fbd0b | 1213 | set_local_socket (void) |
46cec291 | 1214 | { |
aa0b6932 | 1215 | HSOCKET s; |
46cec291 | 1216 | struct sockaddr_un server; |
46cec291 | 1217 | |
e69233c2 | 1218 | /* |
46cec291 RS |
1219 | * Open up an AF_UNIX socket in this person's home directory |
1220 | */ | |
1221 | ||
1222 | if ((s = socket (AF_UNIX, SOCK_STREAM, 0)) < 0) | |
1223 | { | |
42073bfb | 1224 | message (TRUE, "%s: socket: %s\n", progname, strerror (errno)); |
aa0b6932 | 1225 | return INVALID_SOCKET; |
46cec291 | 1226 | } |
e69233c2 | 1227 | |
46cec291 | 1228 | server.sun_family = AF_UNIX; |
c5fee545 | 1229 | |
c5fee545 | 1230 | { |
9f637eea | 1231 | int sock_status = 0; |
5c9659d3 | 1232 | int default_sock = !socket_name; |
b80bf66e | 1233 | int saved_errno = 0; |
0734b0d0 | 1234 | char *server_name = "server"; |
f77b11a0 | 1235 | char *tmpdir; |
0b0d3e0b | 1236 | |
8966b757 AS |
1237 | if (socket_name && !strchr (socket_name, '/') |
1238 | && !strchr (socket_name, '\\')) | |
1239 | { | |
1240 | /* socket_name is a file name component. */ | |
d3a6748c KL |
1241 | server_name = socket_name; |
1242 | socket_name = NULL; | |
1243 | default_sock = 1; /* Try both UIDs. */ | |
0734b0d0 | 1244 | } |
efb859b4 | 1245 | |
5c9659d3 | 1246 | if (default_sock) |
254107e4 | 1247 | { |
f77b11a0 JB |
1248 | tmpdir = egetenv ("TMPDIR"); |
1249 | if (!tmpdir) | |
1250 | tmpdir = "/tmp"; | |
bc558f3e JB |
1251 | socket_name = alloca (strlen (tmpdir) + strlen (server_name) |
1252 | + EXTRA_SPACE); | |
f77b11a0 JB |
1253 | sprintf (socket_name, "%s/emacs%d/%s", |
1254 | tmpdir, (int) geteuid (), server_name); | |
254107e4 RS |
1255 | } |
1256 | ||
1257 | if (strlen (socket_name) < sizeof (server.sun_path)) | |
1258 | strcpy (server.sun_path, socket_name); | |
1259 | else | |
819b8f00 | 1260 | { |
78da39c6 | 1261 | message (TRUE, "%s: socket-name %s too long\n", |
974b73e8 | 1262 | progname, socket_name); |
819b8f00 KL |
1263 | fail (); |
1264 | } | |
efb859b4 | 1265 | |
9f637eea GM |
1266 | /* See if the socket exists, and if it's owned by us. */ |
1267 | sock_status = socket_status (server.sun_path); | |
152b6e83 | 1268 | saved_errno = errno; |
5c9659d3 | 1269 | if (sock_status && default_sock) |
efb859b4 | 1270 | { |
9f637eea GM |
1271 | /* Failing that, see if LOGNAME or USER exist and differ from |
1272 | our euid. If so, look for a socket based on the UID | |
1273 | associated with the name. This is reminiscent of the logic | |
1274 | that init_editfns uses to set the global Vuser_full_name. */ | |
e69233c2 | 1275 | |
7ce8671d | 1276 | char *user_name = (char *) egetenv ("LOGNAME"); |
293f9f2a | 1277 | |
9f637eea | 1278 | if (!user_name) |
7ce8671d | 1279 | user_name = (char *) egetenv ("USER"); |
e69233c2 | 1280 | |
9f637eea GM |
1281 | if (user_name) |
1282 | { | |
1283 | struct passwd *pw = getpwnam (user_name); | |
293f9f2a | 1284 | |
9f637eea GM |
1285 | if (pw && (pw->pw_uid != geteuid ())) |
1286 | { | |
1287 | /* We're running under su, apparently. */ | |
bc558f3e JB |
1288 | socket_name = alloca (strlen (tmpdir) + strlen (server_name) |
1289 | + EXTRA_SPACE); | |
f77b11a0 JB |
1290 | sprintf (socket_name, "%s/emacs%d/%s", |
1291 | tmpdir, (int) pw->pw_uid, server_name); | |
5c9659d3 SM |
1292 | |
1293 | if (strlen (socket_name) < sizeof (server.sun_path)) | |
1294 | strcpy (server.sun_path, socket_name); | |
1295 | else | |
1296 | { | |
78da39c6 | 1297 | message (TRUE, "%s: socket-name %s too long\n", |
aa0b6932 | 1298 | progname, socket_name); |
65396510 | 1299 | exit (EXIT_FAILURE); |
5c9659d3 SM |
1300 | } |
1301 | ||
9f637eea | 1302 | sock_status = socket_status (server.sun_path); |
b80bf66e | 1303 | saved_errno = errno; |
9f637eea | 1304 | } |
293f9f2a RS |
1305 | else |
1306 | errno = saved_errno; | |
9f637eea | 1307 | } |
efb859b4 | 1308 | } |
e69233c2 | 1309 | |
aa0b6932 JB |
1310 | switch (sock_status) |
1311 | { | |
1312 | case 1: | |
974b73e8 KL |
1313 | /* There's a socket, but it isn't owned by us. This is OK if |
1314 | we are root. */ | |
1315 | if (0 != geteuid ()) | |
1316 | { | |
1317 | message (TRUE, "%s: Invalid socket owner\n", progname); | |
aa0b6932 | 1318 | return INVALID_SOCKET; |
974b73e8 KL |
1319 | } |
1320 | break; | |
aa0b6932 JB |
1321 | |
1322 | case 2: | |
974b73e8 KL |
1323 | /* `stat' failed */ |
1324 | if (saved_errno == ENOENT) | |
1325 | message (TRUE, | |
1326 | "%s: can't find socket; have you started the server?\n\ | |
45adde32 | 1327 | To start the server in Emacs, type \"M-x server-start\".\n", |
aa0b6932 | 1328 | progname); |
974b73e8 KL |
1329 | else |
1330 | message (TRUE, "%s: can't stat %s: %s\n", | |
aa0b6932 | 1331 | progname, server.sun_path, strerror (saved_errno)); |
974b73e8 | 1332 | return INVALID_SOCKET; |
aa0b6932 | 1333 | } |
efb859b4 | 1334 | } |
46cec291 | 1335 | |
4e23f2ba JB |
1336 | if (connect (s, (struct sockaddr *) &server, strlen (server.sun_path) + 2) |
1337 | < 0) | |
46cec291 | 1338 | { |
42073bfb | 1339 | message (TRUE, "%s: connect: %s\n", progname, strerror (errno)); |
aa0b6932 | 1340 | return INVALID_SOCKET; |
46cec291 | 1341 | } |
23a7488d | 1342 | |
aa0b6932 JB |
1343 | return s; |
1344 | } | |
1345 | #endif /* ! NO_SOCKETS_IN_FILE_SYSTEM */ | |
1346 | ||
1347 | HSOCKET | |
636b507b | 1348 | set_socket (int no_exit_if_error) |
aa0b6932 | 1349 | { |
b03d27bd | 1350 | HSOCKET s; |
c0f342ab | 1351 | |
b03d27bd | 1352 | INITIALIZE (); |
c0f342ab | 1353 | |
aa0b6932 | 1354 | #ifndef NO_SOCKETS_IN_FILE_SYSTEM |
b03d27bd JB |
1355 | /* Explicit --socket-name argument. */ |
1356 | if (socket_name) | |
46cec291 | 1357 | { |
b03d27bd | 1358 | s = set_local_socket (); |
636b507b | 1359 | if ((s != INVALID_SOCKET) || no_exit_if_error) |
974b73e8 | 1360 | return s; |
355a326e | 1361 | message (TRUE, "%s: error accessing socket \"%s\"\n", |
974b73e8 | 1362 | progname, socket_name); |
b03d27bd | 1363 | exit (EXIT_FAILURE); |
46cec291 | 1364 | } |
b03d27bd JB |
1365 | #endif |
1366 | ||
1367 | /* Explicit --server-file arg or EMACS_SERVER_FILE variable. */ | |
1368 | if (!server_file) | |
7ce8671d | 1369 | server_file = egetenv ("EMACS_SERVER_FILE"); |
46cec291 | 1370 | |
b03d27bd | 1371 | if (server_file) |
23a7488d | 1372 | { |
b03d27bd | 1373 | s = set_tcp_socket (); |
636b507b | 1374 | if ((s != INVALID_SOCKET) || no_exit_if_error) |
974b73e8 | 1375 | return s; |
c0f342ab | 1376 | |
78da39c6 | 1377 | message (TRUE, "%s: error accessing server file \"%s\"\n", |
974b73e8 | 1378 | progname, server_file); |
b03d27bd | 1379 | exit (EXIT_FAILURE); |
23a7488d | 1380 | } |
c0f342ab | 1381 | |
b03d27bd JB |
1382 | #ifndef NO_SOCKETS_IN_FILE_SYSTEM |
1383 | /* Implicit local socket. */ | |
1384 | s = set_local_socket (); | |
1385 | if (s != INVALID_SOCKET) | |
1386 | return s; | |
1387 | #endif | |
23a7488d | 1388 | |
b03d27bd JB |
1389 | /* Implicit server file. */ |
1390 | server_file = "server"; | |
1391 | s = set_tcp_socket (); | |
636b507b | 1392 | if ((s != INVALID_SOCKET) || no_exit_if_error) |
b03d27bd JB |
1393 | return s; |
1394 | ||
1395 | /* No implicit or explicit socket, and no alternate editor. */ | |
42073bfb | 1396 | message (TRUE, "%s: No socket or alternate editor. Please use:\n\n" |
b03d27bd JB |
1397 | #ifndef NO_SOCKETS_IN_FILE_SYSTEM |
1398 | "\t--socket-name\n" | |
ee6a193c | 1399 | #endif |
b03d27bd JB |
1400 | "\t--server-file (or environment variable EMACS_SERVER_FILE)\n\ |
1401 | \t--alternate-editor (or environment variable ALTERNATE_EDITOR)\n", | |
1402 | progname); | |
1403 | exit (EXIT_FAILURE); | |
aa0b6932 | 1404 | } |
46cec291 | 1405 | |
0e0dced5 JB |
1406 | #ifdef WINDOWSNT |
1407 | FARPROC set_fg; /* Pointer to AllowSetForegroundWindow. */ | |
1408 | FARPROC get_wc; /* Pointer to RealGetWindowClassA. */ | |
1409 | ||
1410 | BOOL CALLBACK | |
1411 | w32_find_emacs_process (hWnd, lParam) | |
1412 | HWND hWnd; | |
1413 | LPARAM lParam; | |
1414 | { | |
1415 | DWORD pid; | |
1416 | char class[6]; | |
1417 | ||
1418 | /* Reject any window not of class "Emacs". */ | |
1419 | if (! get_wc (hWnd, class, sizeof (class)) | |
1420 | || strcmp (class, "Emacs")) | |
1421 | return TRUE; | |
1422 | ||
1423 | /* We only need the process id, not the thread id. */ | |
1424 | (void) GetWindowThreadProcessId (hWnd, &pid); | |
1425 | ||
1426 | /* Not the one we're looking for. */ | |
1427 | if (pid != (DWORD) emacs_pid) return TRUE; | |
1428 | ||
1429 | /* OK, let's raise it. */ | |
1430 | set_fg (emacs_pid); | |
1431 | ||
1432 | /* Stop enumeration. */ | |
1433 | return FALSE; | |
1434 | } | |
1435 | ||
1436 | /* | |
1437 | * Search for a window of class "Emacs" and owned by a process with | |
1438 | * process id = emacs_pid. If found, allow it to grab the focus. | |
1439 | */ | |
1440 | void | |
1441 | w32_give_focus () | |
1442 | { | |
ff90fbde | 1443 | HANDLE user32; |
0e0dced5 | 1444 | |
71b8f735 | 1445 | /* It shouldn't happen when dealing with TCP sockets. */ |
0e0dced5 JB |
1446 | if (!emacs_pid) return; |
1447 | ||
ff90fbde JR |
1448 | user32 = GetModuleHandle ("user32.dll"); |
1449 | ||
1450 | if (!user32) | |
1451 | return; | |
0e0dced5 JB |
1452 | |
1453 | /* Modern Windows restrict which processes can set the foreground window. | |
1454 | emacsclient can allow Emacs to grab the focus by calling the function | |
1455 | AllowSetForegroundWindow. Unfortunately, older Windows (W95, W98 and | |
1456 | NT) lack this function, so we have to check its availability. */ | |
ff90fbde JR |
1457 | if ((set_fg = GetProcAddress (user32, "AllowSetForegroundWindow")) |
1458 | && (get_wc = GetProcAddress (user32, "RealGetWindowClassA"))) | |
0e0dced5 | 1459 | EnumWindows (w32_find_emacs_process, (LPARAM) 0); |
0e0dced5 JB |
1460 | } |
1461 | #endif | |
1462 | ||
636b507b DN |
1463 | /* Start the emacs daemon and try to connect to it. */ |
1464 | ||
1465 | void | |
1466 | start_daemon_and_retry_set_socket (void) | |
1467 | { | |
802bdb3c | 1468 | #ifndef WINDOWSNT |
636b507b DN |
1469 | pid_t dpid; |
1470 | int status; | |
636b507b DN |
1471 | |
1472 | dpid = fork (); | |
1473 | ||
1474 | if (dpid > 0) | |
1475 | { | |
fd95644b DN |
1476 | pid_t w; |
1477 | w = waitpid (dpid, &status, WUNTRACED | WCONTINUED); | |
636b507b | 1478 | |
fd95644b DN |
1479 | if ((w == -1) || !WIFEXITED (status) || WEXITSTATUS(status)) |
1480 | { | |
1481 | message (TRUE, "Error: Could not start the Emacs daemon\n"); | |
1482 | exit (EXIT_FAILURE); | |
1483 | } | |
1484 | ||
1485 | /* Try connecting, the daemon should have started by now. */ | |
1486 | message (TRUE, "Emacs daemon should have started, trying to connect again\n"); | |
636b507b | 1487 | if ((emacs_socket = set_socket (1)) == INVALID_SOCKET) |
fd95644b DN |
1488 | { |
1489 | message (TRUE, "Error: Cannot connect even after starting the Emacs daemon\n"); | |
1490 | exit (EXIT_FAILURE); | |
1491 | } | |
636b507b DN |
1492 | } |
1493 | else if (dpid < 0) | |
1494 | { | |
fd95644b | 1495 | fprintf (stderr, "Error: Cannot fork!\n"); |
636b507b DN |
1496 | exit (1); |
1497 | } | |
1498 | else | |
1499 | { | |
1500 | char *d_argv[] = {"emacs", "--daemon", 0 }; | |
1501 | if (socket_name != NULL) | |
1502 | { | |
1503 | /* Pass --daemon=socket_name as argument. */ | |
1504 | char *deq = "--daemon="; | |
1505 | char *daemon_arg = alloca (strlen (deq) | |
1506 | + strlen (socket_name) + 1); | |
1507 | strcpy (daemon_arg, deq); | |
1508 | strcat (daemon_arg, socket_name); | |
1509 | d_argv[1] = daemon_arg; | |
1510 | } | |
1511 | execvp ("emacs", d_argv); | |
1512 | message (TRUE, "%s: error starting emacs daemon\n", progname); | |
1513 | } | |
802bdb3c | 1514 | #endif /* WINDOWSNT */ |
636b507b DN |
1515 | } |
1516 | ||
aa0b6932 | 1517 | int |
873fbd0b | 1518 | main (int argc, char **argv) |
aa0b6932 | 1519 | { |
aa0b6932 | 1520 | int i, rl, needlf = 0; |
974b73e8 | 1521 | char *cwd, *str; |
aa0b6932 | 1522 | char string[BUFSIZ+1]; |
802bdb3c | 1523 | int null_socket_name, null_server_file, start_daemon_if_needed; |
aa0b6932 | 1524 | |
974b73e8 | 1525 | main_argv = argv; |
aa0b6932 JB |
1526 | progname = argv[0]; |
1527 | ||
ff90fbde JR |
1528 | #ifdef WINDOWSNT |
1529 | /* On Windows 7 and later, we need to explicitly associate emacsclient | |
1530 | with emacs so the UI behaves sensibly. */ | |
1531 | w32_set_user_model_id (); | |
1532 | #endif | |
1533 | ||
aa0b6932 JB |
1534 | /* Process options. */ |
1535 | decode_options (argc, argv); | |
1536 | ||
273b9028 | 1537 | if ((argc - optind < 1) && !eval && current_frame) |
23a7488d | 1538 | { |
974b73e8 KL |
1539 | message (TRUE, "%s: file name or argument required\n" |
1540 | "Try `%s --help' for more information\n", | |
1541 | progname, progname); | |
aa0b6932 | 1542 | exit (EXIT_FAILURE); |
23a7488d RS |
1543 | } |
1544 | ||
636b507b DN |
1545 | /* If alternate_editor is the empty string, start the emacs daemon |
1546 | in case of failure to connect. */ | |
1547 | start_daemon_if_needed = (alternate_editor | |
1548 | && (alternate_editor[0] == '\0')); | |
1549 | if (start_daemon_if_needed) | |
1550 | { | |
1551 | /* set_socket changes the values for socket_name and | |
1552 | server_file, we need to reset them, if they were NULL before | |
1553 | for the second call to set_socket. */ | |
1554 | null_socket_name = (socket_name == NULL); | |
1555 | null_server_file = (server_file == NULL); | |
1556 | } | |
aa0b6932 | 1557 | |
636b507b DN |
1558 | if ((emacs_socket = set_socket (alternate_editor |
1559 | || start_daemon_if_needed)) == INVALID_SOCKET) | |
1560 | if (start_daemon_if_needed) | |
1561 | { | |
1562 | /* Reset socket_name and server_file if they were NULL | |
1563 | before the set_socket call. */ | |
1564 | if (null_socket_name) | |
1565 | socket_name = NULL; | |
1566 | if (null_server_file) | |
1567 | server_file = NULL; | |
1568 | ||
1569 | start_daemon_and_retry_set_socket (); | |
1570 | } | |
1571 | else | |
1572 | fail (); | |
974b73e8 KL |
1573 | |
1574 | cwd = get_current_dir_name (); | |
46cec291 RS |
1575 | if (cwd == 0) |
1576 | { | |
1577 | /* getwd puts message in STRING if it fails. */ | |
974b73e8 KL |
1578 | message (TRUE, "%s: %s\n", progname, |
1579 | "Cannot get current working directory"); | |
819b8f00 | 1580 | fail (); |
46cec291 RS |
1581 | } |
1582 | ||
c66648e0 | 1583 | #ifdef WINDOWSNT |
0e0dced5 | 1584 | w32_give_focus (); |
c66648e0 JB |
1585 | #endif |
1586 | ||
273b9028 | 1587 | /* Send over our environment and current directory. */ |
59e085e0 KL |
1588 | if (!current_frame) |
1589 | { | |
1590 | extern char **environ; | |
1591 | int i; | |
1592 | for (i = 0; environ[i]; i++) | |
1593 | { | |
1594 | char *name = xstrdup (environ[i]); | |
1595 | char *value = strchr (name, '='); | |
486ba65f JR |
1596 | send_to_emacs (emacs_socket, "-env "); |
1597 | quote_argument (emacs_socket, environ[i]); | |
1598 | send_to_emacs (emacs_socket, " "); | |
59e085e0 | 1599 | } |
2828d5f9 | 1600 | } |
ba528748 SM |
1601 | send_to_emacs (emacs_socket, "-dir "); |
1602 | quote_argument (emacs_socket, cwd); | |
1603 | send_to_emacs (emacs_socket, "/"); | |
1604 | send_to_emacs (emacs_socket, " "); | |
2828d5f9 | 1605 | |
6afdd335 | 1606 | retry: |
5212210c | 1607 | if (nowait) |
486ba65f | 1608 | send_to_emacs (emacs_socket, "-nowait "); |
292d74a3 | 1609 | |
92071250 | 1610 | if (current_frame) |
486ba65f | 1611 | send_to_emacs (emacs_socket, "-current-frame "); |
c0f342ab | 1612 | |
30be2360 | 1613 | if (display) |
87209357 | 1614 | { |
486ba65f JR |
1615 | send_to_emacs (emacs_socket, "-display "); |
1616 | quote_argument (emacs_socket, display); | |
1617 | send_to_emacs (emacs_socket, " "); | |
87209357 | 1618 | } |
30be2360 | 1619 | |
0191e222 CY |
1620 | if (parent_id) |
1621 | { | |
1622 | send_to_emacs (emacs_socket, "-parent-id "); | |
1623 | quote_argument (emacs_socket, parent_id); | |
1624 | send_to_emacs (emacs_socket, " "); | |
1625 | } | |
1626 | ||
8536c0f5 CY |
1627 | /* If using the current frame, send tty information to Emacs anyway. |
1628 | In daemon mode, Emacs may need to occupy this tty if no other | |
1629 | frame is available. */ | |
322ca650 | 1630 | if (tty || (current_frame && !eval)) |
9628b887 | 1631 | { |
273b9028 | 1632 | char *tty_type, *tty_name; |
0b0d3e0b | 1633 | |
273b9028 CY |
1634 | if (find_tty (&tty_type, &tty_name, !tty)) |
1635 | { | |
b2ff54a0 | 1636 | #if !defined (NO_SOCKETS_IN_FILE_SYSTEM) |
273b9028 | 1637 | init_signals (); |
b2ff54a0 | 1638 | #endif |
273b9028 CY |
1639 | send_to_emacs (emacs_socket, "-tty "); |
1640 | quote_argument (emacs_socket, tty_name); | |
1641 | send_to_emacs (emacs_socket, " "); | |
1642 | quote_argument (emacs_socket, tty_type); | |
1643 | send_to_emacs (emacs_socket, " "); | |
1644 | } | |
9628b887 | 1645 | } |
77134727 | 1646 | |
273b9028 | 1647 | if (!current_frame && !tty) |
486ba65f | 1648 | send_to_emacs (emacs_socket, "-window-system "); |
0b0d3e0b | 1649 | |
87209357 | 1650 | if ((argc - optind > 0)) |
5212210c | 1651 | { |
87209357 | 1652 | for (i = optind; i < argc; i++) |
46cec291 | 1653 | { |
0b0d3e0b | 1654 | |
87209357 | 1655 | if (eval) |
0b0d3e0b | 1656 | { |
974b73e8 | 1657 | /* Don't prepend cwd or anything like that. */ |
486ba65f JR |
1658 | send_to_emacs (emacs_socket, "-eval "); |
1659 | quote_argument (emacs_socket, argv[i]); | |
1660 | send_to_emacs (emacs_socket, " "); | |
0b0d3e0b KL |
1661 | continue; |
1662 | } | |
1663 | ||
1664 | if (*argv[i] == '+') | |
1665 | { | |
87209357 EZ |
1666 | char *p = argv[i] + 1; |
1667 | while (isdigit ((unsigned char) *p) || *p == ':') p++; | |
0b0d3e0b KL |
1668 | if (*p == 0) |
1669 | { | |
486ba65f JR |
1670 | send_to_emacs (emacs_socket, "-position "); |
1671 | quote_argument (emacs_socket, argv[i]); | |
1672 | send_to_emacs (emacs_socket, " "); | |
0b0d3e0b KL |
1673 | continue; |
1674 | } | |
0b0d3e0b | 1675 | } |
6cde1b21 JB |
1676 | #ifdef WINDOWSNT |
1677 | else if (! file_name_absolute_p (argv[i]) | |
1678 | && (isalpha (argv[i][0]) && argv[i][1] == ':')) | |
1679 | /* Windows can have a different default directory for each | |
1680 | drive, so the cwd passed via "-dir" is not sufficient | |
1681 | to account for that. | |
1682 | If the user uses <drive>:<relpath>, we hence need to be | |
1683 | careful to expand <relpath> with the default directory | |
1684 | corresponding to <drive>. */ | |
1685 | { | |
1686 | char *filename = (char *) xmalloc (MAX_PATH); | |
1687 | DWORD size; | |
1688 | ||
1689 | size = GetFullPathName (argv[i], MAX_PATH, filename, NULL); | |
1690 | if (size > 0 && size < MAX_PATH) | |
1691 | argv[i] = filename; | |
1692 | else | |
1693 | free (filename); | |
1694 | } | |
1695 | #endif | |
0b0d3e0b | 1696 | |
486ba65f | 1697 | send_to_emacs (emacs_socket, "-file "); |
486ba65f JR |
1698 | quote_argument (emacs_socket, argv[i]); |
1699 | send_to_emacs (emacs_socket, " "); | |
0b0d3e0b | 1700 | } |
46cec291 | 1701 | } |
273b9028 | 1702 | else if (eval) |
87209357 | 1703 | { |
273b9028 CY |
1704 | /* Read expressions interactively. */ |
1705 | while ((str = fgets (string, BUFSIZ, stdin))) | |
1706 | { | |
1707 | send_to_emacs (emacs_socket, "-eval "); | |
1708 | quote_argument (emacs_socket, str); | |
1709 | } | |
1710 | send_to_emacs (emacs_socket, " "); | |
87209357 | 1711 | } |
0b0d3e0b | 1712 | |
486ba65f | 1713 | send_to_emacs (emacs_socket, "\n"); |
46cec291 | 1714 | |
fc2040c0 KL |
1715 | /* Wait for an answer. */ |
1716 | if (!eval && !tty && !nowait) | |
30be2360 SM |
1717 | { |
1718 | printf ("Waiting for Emacs..."); | |
1719 | needlf = 2; | |
1720 | } | |
46cec291 | 1721 | fflush (stdout); |
0b0d3e0b | 1722 | fsync (1); |
46cec291 | 1723 | |
3cf8c6aa | 1724 | /* Now, wait for an answer and print any messages. */ |
4b7b77f6 | 1725 | while ((rl = recv (emacs_socket, string, BUFSIZ, 0)) > 0) |
3cf8c6aa | 1726 | { |
974b73e8 KL |
1727 | char *p; |
1728 | string[rl] = '\0'; | |
1729 | ||
1730 | p = string + strlen (string) - 1; | |
1731 | while (p > string && *p == '\n') | |
0b0d3e0b KL |
1732 | *p-- = 0; |
1733 | ||
31fa6595 | 1734 | if (strprefix ("-emacs-pid ", string)) |
4d553a13 | 1735 | { |
6afdd335 | 1736 | /* -emacs-pid PID: The process id of the Emacs process. */ |
77134727 KL |
1737 | emacs_pid = strtol (string + strlen ("-emacs-pid"), NULL, 10); |
1738 | } | |
974b73e8 | 1739 | else if (strprefix ("-window-system-unsupported ", string)) |
6afdd335 KL |
1740 | { |
1741 | /* -window-system-unsupported: Emacs was compiled without X | |
1742 | support. Try again on the terminal. */ | |
6afdd335 KL |
1743 | nowait = 0; |
1744 | tty = 1; | |
1745 | goto retry; | |
1746 | } | |
974b73e8 | 1747 | else if (strprefix ("-print ", string)) |
77134727 | 1748 | { |
6afdd335 | 1749 | /* -print STRING: Print STRING on the terminal. */ |
974b73e8 | 1750 | str = unquote_argument (string + strlen ("-print ")); |
0b0d3e0b | 1751 | if (needlf) |
77134727 | 1752 | printf ("\n"); |
0b0d3e0b KL |
1753 | printf ("%s", str); |
1754 | needlf = str[0] == '\0' ? needlf : str[strlen (str) - 1] != '\n'; | |
77134727 | 1755 | } |
974b73e8 | 1756 | else if (strprefix ("-error ", string)) |
77134727 | 1757 | { |
6afdd335 | 1758 | /* -error DESCRIPTION: Signal an error on the terminal. */ |
974b73e8 | 1759 | str = unquote_argument (string + strlen ("-error ")); |
0b0d3e0b KL |
1760 | if (needlf) |
1761 | printf ("\n"); | |
974b73e8 | 1762 | fprintf (stderr, "*ERROR*: %s", str); |
0b0d3e0b KL |
1763 | needlf = str[0] == '\0' ? needlf : str[strlen (str) - 1] != '\n'; |
1764 | } | |
c801ad51 | 1765 | #ifdef SIGSTOP |
382707ec | 1766 | else if (strprefix ("-suspend ", string)) |
0b0d3e0b | 1767 | { |
6afdd335 | 1768 | /* -suspend: Suspend this terminal, i.e., stop the process. */ |
0b0d3e0b | 1769 | if (needlf) |
77134727 | 1770 | printf ("\n"); |
0b0d3e0b KL |
1771 | needlf = 0; |
1772 | kill (0, SIGSTOP); | |
4d553a13 | 1773 | } |
b2ff54a0 | 1774 | #endif |
4d553a13 KL |
1775 | else |
1776 | { | |
6afdd335 | 1777 | /* Unknown command. */ |
0b0d3e0b | 1778 | if (needlf) |
4d553a13 | 1779 | printf ("\n"); |
974b73e8 KL |
1780 | printf ("*ERROR*: Unknown message: %s", string); |
1781 | needlf = string[0] == '\0' ? needlf : string[strlen (string) - 1] != '\n'; | |
4d553a13 | 1782 | } |
3cf8c6aa SM |
1783 | } |
1784 | ||
1785 | if (needlf) | |
1786 | printf ("\n"); | |
1787 | fflush (stdout); | |
0b0d3e0b | 1788 | fsync (1); |
23a7488d | 1789 | |
4b7b77f6 | 1790 | CLOSE_SOCKET (emacs_socket); |
65396510 | 1791 | return EXIT_SUCCESS; |
46cec291 RS |
1792 | } |
1793 | ||
1e7823d0 | 1794 | #endif /* HAVE_SOCKETS && HAVE_INET_SOCKETS */ |
aa0b6932 | 1795 | |
27711600 RM |
1796 | \f |
1797 | #ifndef HAVE_STRERROR | |
1798 | char * | |
1799 | strerror (errnum) | |
1800 | int errnum; | |
1801 | { | |
1802 | extern char *sys_errlist[]; | |
1803 | extern int sys_nerr; | |
1804 | ||
1805 | if (errnum >= 0 && errnum < sys_nerr) | |
1806 | return sys_errlist[errnum]; | |
1807 | return (char *) "Unknown error"; | |
1808 | } | |
1809 | ||
1810 | #endif /* ! HAVE_STRERROR */ | |
ab5796a9 MB |
1811 | |
1812 | /* arch-tag: f39bb9c4-73eb-477e-896d-50832e2ca9a7 | |
1813 | (do not change this comment) */ | |
65396510 TTN |
1814 | |
1815 | /* emacsclient.c ends here */ |