Commit | Line | Data |
---|---|---|
efb859b4 | 1 | /* Client process that communicates with GNU Emacs acting as server. |
73b0cd50 | 2 | Copyright (C) 1986-1987, 1994, 1999-2011 Free Software Foundation, Inc. |
46cec291 RS |
3 | |
4 | This file is part of GNU Emacs. | |
5 | ||
294981c7 | 6 | GNU Emacs is free software: you can redistribute it and/or modify |
46cec291 | 7 | it under the terms of the GNU General Public License as published by |
294981c7 GM |
8 | the Free Software Foundation, either version 3 of the License, or |
9 | (at your option) any later version. | |
46cec291 RS |
10 | |
11 | GNU Emacs is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
294981c7 | 17 | along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */ |
46cec291 RS |
18 | |
19 | ||
2f8fe2f4 | 20 | #include <config.h> |
e69233c2 | 21 | |
aa0b6932 | 22 | #ifdef WINDOWSNT |
aa0b6932 | 23 | |
bc28de71 JB |
24 | /* config.h defines these, which disables sockets altogether! */ |
25 | # undef _WINSOCKAPI_ | |
26 | # undef _WINSOCK_H | |
27 | ||
411b80a5 JB |
28 | # include <malloc.h> |
29 | # include <stdlib.h> | |
42073bfb | 30 | # include <windows.h> |
dbf60b07 | 31 | # include <commctrl.h> |
0613f5d5 DN |
32 | # include <io.h> |
33 | # include <winsock2.h> | |
411b80a5 | 34 | |
411b80a5 JB |
35 | # define NO_SOCKETS_IN_FILE_SYSTEM |
36 | ||
aa0b6932 JB |
37 | # define HSOCKET SOCKET |
38 | # define CLOSE_SOCKET closesocket | |
aa0b6932 | 39 | # define INITIALIZE() (initialize_sockets ()) |
411b80a5 | 40 | |
728a982d DN |
41 | char *w32_getenv (char *); |
42 | #define egetenv(VAR) w32_getenv(VAR) | |
43 | ||
411b80a5 JB |
44 | #else /* !WINDOWSNT */ |
45 | ||
67c1df01 | 46 | # include "syswait.h" |
ed4a3730 | 47 | |
1e7823d0 JB |
48 | # ifdef HAVE_INET_SOCKETS |
49 | # include <netinet/in.h> | |
0613f5d5 DN |
50 | # ifdef HAVE_SOCKETS |
51 | # include <sys/types.h> | |
52 | # include <sys/socket.h> | |
53 | # include <sys/un.h> | |
54 | # endif /* HAVE_SOCKETS */ | |
1e7823d0 | 55 | # endif |
18d2ad29 | 56 | # include <arpa/inet.h> |
448d4085 | 57 | |
e35fc962 | 58 | # define INVALID_SOCKET -1 |
aa0b6932 JB |
59 | # define HSOCKET int |
60 | # define CLOSE_SOCKET close | |
aa0b6932 | 61 | # define INITIALIZE() |
411b80a5 | 62 | |
5445ab06 DN |
63 | # ifndef WCONTINUED |
64 | # define WCONTINUED 8 | |
65 | # endif | |
66 | ||
728a982d DN |
67 | #define egetenv(VAR) getenv(VAR) |
68 | ||
411b80a5 | 69 | #endif /* !WINDOWSNT */ |
aa0b6932 | 70 | |
4e23f2ba | 71 | #undef signal |
46cec291 | 72 | |
42073bfb | 73 | #include <stdarg.h> |
e69233c2 | 74 | #include <ctype.h> |
8f9aaa0a | 75 | #include <stdio.h> |
613f7bda | 76 | #include <getopt.h> |
4004364e | 77 | #include <unistd.h> |
8f9aaa0a | 78 | |
0613f5d5 | 79 | #include <pwd.h> |
dc4a4a14 | 80 | #include <sys/stat.h> |
9628b887 | 81 | #include <signal.h> |
4d553a13 | 82 | #include <errno.h> |
9628b887 | 83 | |
0613f5d5 | 84 | |
9628b887 | 85 | \f |
873fbd0b | 86 | char *getenv (const char *), *getwd (char *); |
35a7804d JB |
87 | #ifdef HAVE_GETCWD |
88 | char *(getcwd) (char *, size_t); | |
89 | #endif | |
8f9aaa0a | 90 | |
8f9aaa0a RS |
91 | #ifndef VERSION |
92 | #define VERSION "unspecified" | |
93 | #endif | |
94 | \f | |
aa0b6932 JB |
95 | |
96 | #ifndef EXIT_SUCCESS | |
97 | #define EXIT_SUCCESS 0 | |
98 | #endif | |
99 | ||
100 | #ifndef EXIT_FAILURE | |
101 | #define EXIT_FAILURE 1 | |
102 | #endif | |
103 | ||
104 | #ifndef FALSE | |
105 | #define FALSE 0 | |
106 | #endif | |
107 | ||
108 | #ifndef TRUE | |
109 | #define TRUE 1 | |
110 | #endif | |
111 | ||
bc558f3e JB |
112 | /* Additional space when allocating buffers for filenames, etc. */ |
113 | #define EXTRA_SPACE 100 | |
114 | ||
aa0b6932 | 115 | \f |
8f9aaa0a | 116 | /* Name used to invoke this program. */ |
728a982d | 117 | const char *progname; |
8f9aaa0a | 118 | |
0a125897 KL |
119 | /* The second argument to main. */ |
120 | char **main_argv; | |
121 | ||
749ae770 | 122 | /* Nonzero means don't wait for a response from Emacs. --no-wait. */ |
8f9aaa0a RS |
123 | int nowait = 0; |
124 | ||
30be2360 SM |
125 | /* Nonzero means args are expressions to be evaluated. --eval. */ |
126 | int eval = 0; | |
127 | ||
31fa6595 SM |
128 | /* Nonzero means don't open a new frame. Inverse of --create-frame. */ |
129 | int current_frame = 1; | |
92071250 | 130 | |
30be2360 | 131 | /* The display on which Emacs should work. --display. */ |
988e88ab | 132 | const char *display = NULL; |
30be2360 | 133 | |
0191e222 CY |
134 | /* The parent window ID, if we are opening a frame via XEmbed. */ |
135 | char *parent_id = NULL; | |
136 | ||
9628b887 | 137 | /* Nonzero means open a new Emacs frame on the current terminal. */ |
77134727 | 138 | int tty = 0; |
9628b887 | 139 | |
30be2360 SM |
140 | /* If non-NULL, the name of an editor to fallback to if the server |
141 | is not running. --alternate-editor. */ | |
b03d27bd | 142 | const char *alternate_editor = NULL; |
30be2360 | 143 | |
3db926be | 144 | /* If non-NULL, the filename of the UNIX socket. */ |
254107e4 RS |
145 | char *socket_name = NULL; |
146 | ||
aa0b6932 | 147 | /* If non-NULL, the filename of the authentication file. */ |
988e88ab | 148 | const char *server_file = NULL; |
aa0b6932 | 149 | |
c66648e0 JB |
150 | /* PID of the Emacs server process. */ |
151 | int emacs_pid = 0; | |
152 | ||
873fbd0b | 153 | void print_help_and_exit (void) NO_RETURN; |
68441b90 DN |
154 | void fail (void) NO_RETURN; |
155 | ||
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 |
0191e222 | 174 | { "parent-id", required_argument, NULL, 'p' }, |
30be2360 | 175 | { 0, 0, 0, 0 } |
8f9aaa0a RS |
176 | }; |
177 | ||
974b73e8 KL |
178 | \f |
179 | /* Like malloc but get fatal error if memory is exhausted. */ | |
180 | ||
181 | long * | |
873fbd0b | 182 | xmalloc (unsigned int size) |
974b73e8 KL |
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* | |
7c3320d8 | 233 | get_current_dir_name (void) |
974b73e8 KL |
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 * | |
7c3320d8 | 309 | w32_get_resource (HKEY predefined, char *key, LPDWORD type) |
7ce8671d JB |
310 | { |
311 | HKEY hrootkey = NULL; | |
312 | char *result = NULL; | |
313 | DWORD cbData; | |
314 | ||
315 | if (RegOpenKeyEx (predefined, REG_ROOT, 0, KEY_READ, &hrootkey) == ERROR_SUCCESS) | |
316 | { | |
317 | if (RegQueryValueEx (hrootkey, key, NULL, NULL, NULL, &cbData) == ERROR_SUCCESS) | |
318 | { | |
319 | result = (char *) xmalloc (cbData); | |
320 | ||
bc558f3e JB |
321 | if ((RegQueryValueEx (hrootkey, key, NULL, type, result, &cbData) != ERROR_SUCCESS) |
322 | || (*result == 0)) | |
7ce8671d JB |
323 | { |
324 | free (result); | |
325 | result = NULL; | |
326 | } | |
327 | } | |
328 | ||
329 | RegCloseKey (hrootkey); | |
330 | } | |
331 | ||
332 | return result; | |
333 | } | |
334 | ||
335 | /* | |
336 | getenv wrapper for Windows | |
337 | ||
768c0c0f | 338 | This is needed to duplicate Emacs's behavior, which is to look for environment |
7ce8671d JB |
339 | variables in the registry if they don't appear in the environment. |
340 | */ | |
341 | char * | |
7c3320d8 | 342 | w32_getenv (char *envvar) |
7ce8671d JB |
343 | { |
344 | char *value; | |
345 | DWORD dwType; | |
346 | ||
347 | if (value = getenv (envvar)) | |
348 | /* Found in the environment. */ | |
349 | return value; | |
350 | ||
351 | if (! (value = w32_get_resource (HKEY_CURRENT_USER, envvar, &dwType)) && | |
352 | ! (value = w32_get_resource (HKEY_LOCAL_MACHINE, envvar, &dwType))) | |
d41784ee EZ |
353 | { |
354 | /* "w32console" is what Emacs on Windows uses for tty-type under -nw. */ | |
355 | if (strcmp (envvar, "TERM") == 0) | |
356 | return xstrdup ("w32console"); | |
357 | /* Found neither in the environment nor in the registry. */ | |
358 | return NULL; | |
359 | } | |
7ce8671d JB |
360 | |
361 | if (dwType == REG_SZ) | |
362 | /* Registry; no need to expand. */ | |
363 | return value; | |
364 | ||
365 | if (dwType == REG_EXPAND_SZ) | |
366 | { | |
367 | DWORD size; | |
368 | ||
369 | if (size = ExpandEnvironmentStrings (value, NULL, 0)) | |
370 | { | |
371 | char *buffer = (char *) xmalloc (size); | |
372 | if (ExpandEnvironmentStrings (value, buffer, size)) | |
373 | { | |
374 | /* Found and expanded. */ | |
375 | free (value); | |
376 | return buffer; | |
377 | } | |
378 | ||
379 | /* Error expanding. */ | |
380 | free (buffer); | |
381 | } | |
382 | } | |
383 | ||
384 | /* Not the right type, or not correctly expanded. */ | |
385 | free (value); | |
386 | return NULL; | |
387 | } | |
388 | ||
ff90fbde | 389 | void |
7c3320d8 | 390 | w32_set_user_model_id (void) |
ff90fbde JR |
391 | { |
392 | HMODULE shell; | |
0a3472c7 | 393 | HRESULT (WINAPI * set_user_model) (wchar_t * id); |
ff90fbde JR |
394 | |
395 | /* On Windows 7 and later, we need to set the user model ID | |
396 | to associate emacsclient launched files with Emacs frames | |
397 | in the UI. */ | |
361358ea | 398 | shell = LoadLibrary ("shell32.dll"); |
ff90fbde JR |
399 | if (shell) |
400 | { | |
401 | set_user_model | |
402 | = (void *) GetProcAddress (shell, | |
403 | "SetCurrentProcessExplicitAppUserModelID"); | |
404 | /* If the function is defined, then we are running on Windows 7 | |
405 | or newer, and the UI uses this to group related windows | |
406 | together. Since emacs, runemacs, emacsclient are related, we | |
407 | want them grouped even though the executables are different, | |
408 | so we need to set a consistent ID between them. */ | |
409 | if (set_user_model) | |
410 | set_user_model (L"GNU.Emacs"); | |
411 | ||
412 | FreeLibrary (shell); | |
413 | } | |
414 | } | |
415 | ||
42073bfb | 416 | int |
7c3320d8 | 417 | w32_window_app (void) |
42073bfb JB |
418 | { |
419 | static int window_app = -1; | |
420 | char szTitle[MAX_PATH]; | |
421 | ||
422 | if (window_app < 0) | |
dbf60b07 JR |
423 | { |
424 | /* Checking for STDOUT does not work; it's a valid handle also in | |
425 | nonconsole apps. Testing for the console title seems to work. */ | |
426 | window_app = (GetConsoleTitleA (szTitle, MAX_PATH) == 0); | |
427 | if (window_app) | |
361358ea | 428 | InitCommonControls (); |
dbf60b07 | 429 | } |
42073bfb JB |
430 | |
431 | return window_app; | |
432 | } | |
105faa84 DN |
433 | |
434 | /* | |
cb06b8dc | 435 | execvp wrapper for Windows. Quotes arguments with embedded spaces. |
105faa84 DN |
436 | |
437 | This is necessary due to the broken implementation of exec* routines in | |
438 | the Microsoft libraries: they concatenate the arguments together without | |
439 | quoting special characters, and pass the result to CreateProcess, with | |
7c3320d8 | 440 | predictably bad results. By contrast, POSIX execvp passes the arguments |
105faa84 DN |
441 | directly into the argv array of the child process. |
442 | */ | |
443 | int | |
7c3320d8 | 444 | w32_execvp (const char *path, char **argv) |
105faa84 DN |
445 | { |
446 | int i; | |
447 | ||
448 | /* Required to allow a .BAT script as alternate editor. */ | |
449 | argv[0] = (char *) alternate_editor; | |
450 | ||
451 | for (i = 0; argv[i]; i++) | |
452 | if (strchr (argv[i], ' ')) | |
453 | { | |
454 | char *quoted = alloca (strlen (argv[i]) + 3); | |
455 | sprintf (quoted, "\"%s\"", argv[i]); | |
456 | argv[i] = quoted; | |
457 | } | |
458 | ||
459 | return execvp (path, argv); | |
460 | } | |
461 | ||
462 | #undef execvp | |
463 | #define execvp w32_execvp | |
464 | ||
d41784ee EZ |
465 | /* Emulation of ttyname for Windows. */ |
466 | char * | |
467 | ttyname (int fd) | |
468 | { | |
469 | return "CONOUT$"; | |
470 | } | |
471 | ||
105faa84 | 472 | #endif /* WINDOWSNT */ |
42073bfb | 473 | |
f387c1ee JB |
474 | /* Display a normal or error message. |
475 | On Windows, use a message box if compiled as a Windows app. */ | |
42073bfb | 476 | void |
988e88ab | 477 | message (int is_error, const char *message, ...) |
42073bfb | 478 | { |
361358ea | 479 | char msg[2048]; |
42073bfb JB |
480 | va_list args; |
481 | ||
482 | va_start (args, message); | |
42073bfb JB |
483 | vsprintf (msg, message, args); |
484 | va_end (args); | |
485 | ||
486 | #ifdef WINDOWSNT | |
487 | if (w32_window_app ()) | |
488 | { | |
489 | if (is_error) | |
490 | MessageBox (NULL, msg, "Emacsclient ERROR", MB_ICONERROR); | |
491 | else | |
492 | MessageBox (NULL, msg, "Emacsclient", MB_ICONINFORMATION); | |
493 | } | |
494 | else | |
495 | #endif | |
9219db75 JB |
496 | { |
497 | FILE *f = is_error ? stderr : stdout; | |
498 | ||
499 | fputs (msg, f); | |
500 | fflush (f); | |
501 | } | |
42073bfb JB |
502 | } |
503 | ||
8f9aaa0a | 504 | /* Decode the options from argv and argc. |
5212210c | 505 | The global variable `optind' will say how many arguments we used up. */ |
8f9aaa0a | 506 | |
5212210c | 507 | void |
873fbd0b | 508 | decode_options (int argc, char **argv) |
8f9aaa0a | 509 | { |
7ce8671d | 510 | alternate_editor = egetenv ("ALTERNATE_EDITOR"); |
0ea5797a | 511 | |
8f9aaa0a RS |
512 | while (1) |
513 | { | |
dc1cd5f7 | 514 | int opt = getopt_long_only (argc, argv, |
b03d27bd | 515 | #ifndef NO_SOCKETS_IN_FILE_SYSTEM |
974b73e8 | 516 | "VHnea:s:f:d:tc", |
b03d27bd | 517 | #else |
974b73e8 | 518 | "VHnea:f:d:tc", |
b03d27bd | 519 | #endif |
974b73e8 | 520 | longopts, 0); |
8f9aaa0a RS |
521 | |
522 | if (opt == EOF) | |
523 | break; | |
524 | ||
525 | switch (opt) | |
526 | { | |
527 | case 0: | |
528 | /* If getopt returns 0, then it has already processed a | |
529 | long-named option. We should do nothing. */ | |
530 | break; | |
e69233c2 | 531 | |
97e3214d GM |
532 | case 'a': |
533 | alternate_editor = optarg; | |
534 | break; | |
e69233c2 | 535 | |
b03d27bd | 536 | #ifndef NO_SOCKETS_IN_FILE_SYSTEM |
254107e4 RS |
537 | case 's': |
538 | socket_name = optarg; | |
539 | break; | |
b03d27bd | 540 | #endif |
254107e4 | 541 | |
aa0b6932 JB |
542 | case 'f': |
543 | server_file = optarg; | |
544 | break; | |
254107e4 | 545 | |
0ea5797a SM |
546 | /* We used to disallow this argument in w32, but it seems better |
547 | to allow it, for the occasional case where the user is | |
548 | connecting with a w32 client to a server compiled with X11 | |
549 | support. */ | |
30be2360 SM |
550 | case 'd': |
551 | display = optarg; | |
552 | break; | |
553 | ||
8f9aaa0a RS |
554 | case 'n': |
555 | nowait = 1; | |
556 | break; | |
557 | ||
30be2360 SM |
558 | case 'e': |
559 | eval = 1; | |
560 | break; | |
561 | ||
8f9aaa0a | 562 | case 'V': |
42073bfb | 563 | message (FALSE, "emacsclient %s\n", VERSION); |
65396510 | 564 | exit (EXIT_SUCCESS); |
8f9aaa0a | 565 | break; |
46cec291 | 566 | |
819b8f00 | 567 | case 't': |
77134727 | 568 | tty = 1; |
c1b8e896 | 569 | current_frame = 0; |
77134727 KL |
570 | break; |
571 | ||
e5299d8d | 572 | case 'c': |
31fa6595 | 573 | current_frame = 0; |
9628b887 | 574 | break; |
0b0d3e0b | 575 | |
0191e222 CY |
576 | case 'p': |
577 | parent_id = optarg; | |
578 | current_frame = 0; | |
579 | break; | |
580 | ||
8f9aaa0a | 581 | case 'H': |
8f9aaa0a | 582 | print_help_and_exit (); |
20c396e8 JB |
583 | break; |
584 | ||
585 | default: | |
42073bfb | 586 | message (TRUE, "Try `%s --help' for more information\n", progname); |
65396510 | 587 | exit (EXIT_FAILURE); |
20c396e8 | 588 | break; |
8f9aaa0a RS |
589 | } |
590 | } | |
9628b887 | 591 | |
273b9028 CY |
592 | /* If the -c option is used (without -t) and no --display argument |
593 | is provided, try $DISPLAY. | |
594 | Without the -c option, we used to set `display' to $DISPLAY by | |
595 | default, but this changed the default behavior and is sometimes | |
596 | inconvenient. So we force users to use "--display $DISPLAY" if | |
597 | they want Emacs to connect to their current display. */ | |
09317bf4 | 598 | if (!current_frame && !tty && !display) |
e7534fc4 AR |
599 | { |
600 | display = egetenv ("DISPLAY"); | |
601 | #ifdef NS_IMPL_COCOA | |
602 | /* Under Cocoa, we don't really use displays the same way as in X, | |
603 | so provide a dummy. */ | |
604 | if (!display || strlen (display) == 0) | |
605 | display = "ns"; | |
606 | #endif | |
607 | } | |
9997dc15 | 608 | |
273b9028 | 609 | /* A null-string display is invalid. */ |
0ea5797a SM |
610 | if (display && strlen (display) == 0) |
611 | display = NULL; | |
612 | ||
273b9028 CY |
613 | /* If no display is available, new frames are tty frames. */ |
614 | if (!current_frame && !display) | |
92071250 | 615 | tty = 1; |
c0f342ab | 616 | |
b8ccaf6f | 617 | /* --no-wait implies --current-frame on ttys when there are file |
273b9028 | 618 | arguments or expressions given. */ |
b8ccaf6f | 619 | if (nowait && tty && argc - optind > 0) |
92071250 | 620 | current_frame = 1; |
802bdb3c DN |
621 | |
622 | #ifdef WINDOWSNT | |
69157c99 | 623 | if (alternate_editor && alternate_editor[0] == '\0') |
802bdb3c DN |
624 | { |
625 | message (TRUE, "--alternate-editor argument or ALTERNATE_EDITOR variable cannot be\n\ | |
626 | an empty string"); | |
627 | exit (EXIT_FAILURE); | |
628 | } | |
629 | #endif /* WINDOWSNT */ | |
8f9aaa0a RS |
630 | } |
631 | ||
974b73e8 | 632 | \f |
7f3bff3e | 633 | void |
873fbd0b | 634 | print_help_and_exit (void) |
8f9aaa0a | 635 | { |
c0f342ab JB |
636 | /* Spaces and tabs are significant in this message; they're chosen so the |
637 | message aligns properly both in a tty and in a Windows message box. | |
638 | Please try to preserve them; otherwise the output is very hard to read | |
639 | when using emacsclientw. */ | |
42073bfb | 640 | message (FALSE, |
974b73e8 | 641 | "Usage: %s [OPTIONS] FILE...\n\ |
30be2360 SM |
642 | Tell the Emacs server to visit the specified files.\n\ |
643 | Every FILE can be either just a FILENAME or [+LINE[:COLUMN]] FILENAME.\n\ | |
20c396e8 | 644 | \n\ |
30be2360 | 645 | The following OPTIONS are accepted:\n\ |
c0f342ab JB |
646 | -V, --version Just print version info and return\n\ |
647 | -H, --help Print this usage information message\n\ | |
dc1cd5f7 | 648 | -nw, -t, --tty Open a new Emacs frame on the current terminal\n\ |
c4b858e3 | 649 | -c, --create-frame Create a new frame instead of trying to\n\ |
9dfda22f | 650 | use the current Emacs frame\n\ |
c0f342ab | 651 | -e, --eval Evaluate the FILE arguments as ELisp expressions\n\ |
d07529f3 | 652 | -n, --no-wait Don't wait for the server to return\n\ |
24d5010d | 653 | -d DISPLAY, --display=DISPLAY\n\ |
0191e222 CY |
654 | Visit the file in the given display\n\ |
655 | --parent-id=ID Open in parent window ID, via XEmbed\n" | |
aa0b6932 | 656 | #ifndef NO_SOCKETS_IN_FILE_SYSTEM |
24d5010d | 657 | "-s SOCKET, --socket-name=SOCKET\n\ |
9dfda22f | 658 | Set filename of the UNIX socket for communication\n" |
aa0b6932 | 659 | #endif |
24d5010d | 660 | "-f SERVER, --server-file=SERVER\n\ |
9dfda22f | 661 | Set filename of the TCP authentication file\n\ |
24d5010d | 662 | -a EDITOR, --alternate-editor=EDITOR\n\ |
9dfda22f | 663 | Editor to fallback to if the server is not running\n" |
6133a1a9 | 664 | #ifndef WINDOWSNT |
c3f995a2 JB |
665 | " If EDITOR is the empty string, start Emacs in daemon\n\ |
666 | mode and try connecting again\n" | |
6133a1a9 | 667 | #endif /* not WINDOWSNT */ |
c3f995a2 | 668 | "\n\ |
5f54cae6 | 669 | Report bugs with M-x report-emacs-bug.\n", progname); |
65396510 | 670 | exit (EXIT_SUCCESS); |
8f9aaa0a | 671 | } |
5212210c | 672 | |
aa0b6932 JB |
673 | /* |
674 | Try to run a different command, or --if no alternate editor is | |
675 | defined-- exit with an errorcode. | |
cb06b8dc | 676 | Uses argv, but gets it from the global variable main_argv. |
aa0b6932 JB |
677 | */ |
678 | void | |
974b73e8 | 679 | fail (void) |
9002956f | 680 | { |
aa0b6932 | 681 | if (alternate_editor) |
9002956f | 682 | { |
aa0b6932 | 683 | int i = optind - 1; |
4472aef4 | 684 | |
974b73e8 | 685 | execvp (alternate_editor, main_argv + i); |
42073bfb | 686 | message (TRUE, "%s: error executing alternate editor \"%s\"\n", |
974b73e8 | 687 | progname, alternate_editor); |
9002956f | 688 | } |
aa0b6932 | 689 | exit (EXIT_FAILURE); |
9002956f KL |
690 | } |
691 | ||
aa0b6932 | 692 | \f |
1e7823d0 | 693 | #if !defined (HAVE_SOCKETS) || !defined (HAVE_INET_SOCKETS) |
9002956f | 694 | |
aa0b6932 | 695 | int |
0613f5d5 | 696 | main (int argc, char **argv) |
9002956f | 697 | { |
974b73e8 KL |
698 | main_argv = argv; |
699 | progname = argv[0]; | |
700 | message (TRUE, "%s: Sorry, the Emacs server is supported only\n" | |
c0f342ab | 701 | "on systems with Berkeley sockets.\n", |
aa0b6932 | 702 | argv[0]); |
974b73e8 | 703 | fail (); |
9002956f KL |
704 | } |
705 | ||
1e7823d0 | 706 | #else /* HAVE_SOCKETS && HAVE_INET_SOCKETS */ |
2828d5f9 | 707 | |
aa0b6932 JB |
708 | #define AUTH_KEY_LENGTH 64 |
709 | #define SEND_BUFFER_SIZE 4096 | |
710 | ||
873fbd0b | 711 | extern char *strerror (int); |
aa0b6932 JB |
712 | |
713 | /* Buffer to accumulate data to send in TCP connections. */ | |
714 | char send_buffer[SEND_BUFFER_SIZE + 1]; | |
715 | int sblen = 0; /* Fill pointer for the send buffer. */ | |
4b7b77f6 JR |
716 | /* Socket used to communicate with the Emacs server process. */ |
717 | HSOCKET emacs_socket = 0; | |
aa0b6932 | 718 | |
d22b00e5 JR |
719 | /* On Windows, the socket library was historically separate from the standard |
720 | C library, so errors are handled differently. */ | |
721 | void | |
988e88ab | 722 | sock_err_message (const char *function_name) |
d22b00e5 JR |
723 | { |
724 | #ifdef WINDOWSNT | |
725 | char* msg = NULL; | |
726 | ||
727 | FormatMessage (FORMAT_MESSAGE_FROM_SYSTEM | |
728 | | FORMAT_MESSAGE_ALLOCATE_BUFFER | |
729 | | FORMAT_MESSAGE_ARGUMENT_ARRAY, | |
730 | NULL, WSAGetLastError (), 0, (LPTSTR)&msg, 0, NULL); | |
731 | ||
732 | message (TRUE, "%s: %s: %s\n", progname, function_name, msg); | |
733 | ||
734 | LocalFree (msg); | |
735 | #else | |
736 | message (TRUE, "%s: %s: %s\n", progname, function_name, strerror (errno)); | |
737 | #endif | |
738 | } | |
739 | ||
740 | ||
aa0b6932 JB |
741 | /* Let's send the data to Emacs when either |
742 | - the data ends in "\n", or | |
743 | - the buffer is full (but this shouldn't happen) | |
744 | Otherwise, we just accumulate it. */ | |
b03d27bd | 745 | void |
988e88ab | 746 | send_to_emacs (HSOCKET s, const char *data) |
aa0b6932 JB |
747 | { |
748 | while (data) | |
2828d5f9 | 749 | { |
728a982d | 750 | size_t dlen = strlen (data); |
aa0b6932 JB |
751 | if (dlen + sblen >= SEND_BUFFER_SIZE) |
752 | { | |
753 | int part = SEND_BUFFER_SIZE - sblen; | |
754 | strncpy (&send_buffer[sblen], data, part); | |
755 | data += part; | |
756 | sblen = SEND_BUFFER_SIZE; | |
757 | } | |
758 | else if (dlen) | |
759 | { | |
760 | strcpy (&send_buffer[sblen], data); | |
761 | data = NULL; | |
762 | sblen += dlen; | |
763 | } | |
764 | else | |
765 | break; | |
766 | ||
767 | if (sblen == SEND_BUFFER_SIZE | |
768 | || (sblen > 0 && send_buffer[sblen-1] == '\n')) | |
769 | { | |
770 | int sent = send (s, send_buffer, sblen, 0); | |
771 | if (sent != sblen) | |
772 | strcpy (send_buffer, &send_buffer[sent]); | |
773 | sblen -= sent; | |
774 | } | |
2828d5f9 | 775 | } |
2828d5f9 | 776 | } |
2828d5f9 KL |
777 | |
778 | \f | |
0b0d3e0b | 779 | /* In STR, insert a & before each &, each space, each newline, and |
a4cf2096 | 780 | any initial -. Change spaces to underscores, too, so that the |
0b0d3e0b KL |
781 | return value never contains a space. |
782 | ||
3a35a84c | 783 | Does not change the string. Outputs the result to S. */ |
87209357 | 784 | void |
988e88ab | 785 | quote_argument (HSOCKET s, const char *str) |
5212210c | 786 | { |
9002956f | 787 | char *copy = (char *) xmalloc (strlen (str) * 2 + 1); |
988e88ab J |
788 | const char *p; |
789 | char *q; | |
5212210c | 790 | |
0b0d3e0b | 791 | p = str; |
5212210c RS |
792 | q = copy; |
793 | while (*p) | |
794 | { | |
795 | if (*p == ' ') | |
796 | { | |
f1db6a73 | 797 | *q++ = '&'; |
5212210c RS |
798 | *q++ = '_'; |
799 | p++; | |
800 | } | |
3cf8c6aa SM |
801 | else if (*p == '\n') |
802 | { | |
803 | *q++ = '&'; | |
804 | *q++ = 'n'; | |
805 | p++; | |
806 | } | |
5212210c RS |
807 | else |
808 | { | |
0b0d3e0b | 809 | if (*p == '&' || (*p == '-' && p == str)) |
f1db6a73 | 810 | *q++ = '&'; |
5212210c RS |
811 | *q++ = *p++; |
812 | } | |
813 | } | |
f1db6a73 | 814 | *q++ = 0; |
5212210c | 815 | |
486ba65f | 816 | send_to_emacs (s, copy); |
87209357 EZ |
817 | |
818 | free (copy); | |
5212210c | 819 | } |
0c76956f | 820 | |
0b0d3e0b KL |
821 | |
822 | /* The inverse of quote_argument. Removes quoting in string STR by | |
823 | modifying the string in place. Returns STR. */ | |
824 | ||
825 | char * | |
873fbd0b | 826 | unquote_argument (char *str) |
0b0d3e0b KL |
827 | { |
828 | char *p, *q; | |
829 | ||
830 | if (! str) | |
831 | return str; | |
832 | ||
833 | p = str; | |
834 | q = str; | |
835 | while (*p) | |
836 | { | |
837 | if (*p == '&') | |
838 | { | |
839 | p++; | |
840 | if (*p == '&') | |
841 | *p = '&'; | |
842 | else if (*p == '_') | |
843 | *p = ' '; | |
844 | else if (*p == 'n') | |
845 | *p = '\n'; | |
846 | else if (*p == '-') | |
847 | *p = '-'; | |
848 | } | |
849 | *q++ = *p++; | |
850 | } | |
851 | *q = 0; | |
852 | return str; | |
853 | } | |
854 | ||
8f9aaa0a | 855 | \f |
b03d27bd | 856 | int |
03fc768b | 857 | file_name_absolute_p (const char *filename) |
b03d27bd JB |
858 | { |
859 | /* Sanity check, it shouldn't happen. */ | |
860 | if (! filename) return FALSE; | |
861 | ||
862 | /* /xxx is always an absolute path. */ | |
863 | if (filename[0] == '/') return TRUE; | |
864 | ||
865 | /* Empty filenames (which shouldn't happen) are relative. */ | |
866 | if (filename[0] == '\0') return FALSE; | |
867 | ||
868 | #ifdef WINDOWSNT | |
71b8f735 | 869 | /* X:\xxx is always absolute. */ |
03fc768b | 870 | if (isalpha ((unsigned char) filename[0]) |
cb0297bb | 871 | && filename[1] == ':' && (filename[2] == '\\' || filename[2] == '/')) |
b03d27bd JB |
872 | return TRUE; |
873 | ||
874 | /* Both \xxx and \\xxx\yyy are absolute. */ | |
875 | if (filename[0] == '\\') return TRUE; | |
876 | #endif | |
877 | ||
878 | return FALSE; | |
879 | } | |
880 | ||
aa0b6932 | 881 | #ifdef WINDOWSNT |
f0384499 | 882 | /* Wrapper to make WSACleanup a cdecl, as required by atexit. */ |
7c3320d8 JB |
883 | void __cdecl |
884 | close_winsock (void) | |
aa0b6932 JB |
885 | { |
886 | WSACleanup (); | |
887 | } | |
0c76956f | 888 | |
b03d27bd JB |
889 | /* Initialize the WinSock2 library. */ |
890 | void | |
7c3320d8 | 891 | initialize_sockets (void) |
0c76956f | 892 | { |
aa0b6932 JB |
893 | WSADATA wsaData; |
894 | ||
aa0b6932 JB |
895 | if (WSAStartup (MAKEWORD (2, 0), &wsaData)) |
896 | { | |
78da39c6 | 897 | message (TRUE, "%s: error initializing WinSock2\n", progname); |
aa0b6932 JB |
898 | exit (EXIT_FAILURE); |
899 | } | |
900 | ||
901 | atexit (close_winsock); | |
0c76956f | 902 | } |
e35fc962 | 903 | #endif /* WINDOWSNT */ |
974b73e8 | 904 | |
8f9aaa0a | 905 | \f |
97e3214d | 906 | /* |
aa0b6932 | 907 | * Read the information needed to set up a TCP comm channel with |
968ef9b4 | 908 | * the Emacs server: host, port, and authentication string. |
0e0dced5 | 909 | */ |
b03d27bd | 910 | int |
873fbd0b | 911 | get_server_config (struct sockaddr_in *server, char *authentication) |
97e3214d | 912 | { |
aa0b6932 JB |
913 | char dotted[32]; |
914 | char *port; | |
b03d27bd | 915 | FILE *config = NULL; |
aa0b6932 | 916 | |
b03d27bd JB |
917 | if (file_name_absolute_p (server_file)) |
918 | config = fopen (server_file, "rb"); | |
919 | else | |
97e3214d | 920 | { |
7ce8671d | 921 | char *home = egetenv ("HOME"); |
88b46d84 | 922 | |
aa0b6932 JB |
923 | if (home) |
924 | { | |
bc558f3e JB |
925 | char *path = alloca (strlen (home) + strlen (server_file) |
926 | + EXTRA_SPACE); | |
aa0b6932 JB |
927 | sprintf (path, "%s/.emacs.d/server/%s", home, server_file); |
928 | config = fopen (path, "rb"); | |
929 | } | |
88b46d84 | 930 | #ifdef WINDOWSNT |
7ce8671d | 931 | if (!config && (home = egetenv ("APPDATA"))) |
88b46d84 | 932 | { |
bc558f3e JB |
933 | char *path = alloca (strlen (home) + strlen (server_file) |
934 | + EXTRA_SPACE); | |
88b46d84 JB |
935 | sprintf (path, "%s/.emacs.d/server/%s", home, server_file); |
936 | config = fopen (path, "rb"); | |
937 | } | |
938 | #endif | |
aa0b6932 JB |
939 | } |
940 | ||
941 | if (! config) | |
942 | return FALSE; | |
943 | ||
944 | if (fgets (dotted, sizeof dotted, config) | |
968ef9b4 JB |
945 | && (port = strchr (dotted, ':'))) |
946 | *port++ = '\0'; | |
97e3214d GM |
947 | else |
948 | { | |
78da39c6 | 949 | message (TRUE, "%s: invalid configuration info\n", progname); |
65396510 | 950 | exit (EXIT_FAILURE); |
97e3214d | 951 | } |
97e3214d | 952 | |
aa0b6932 JB |
953 | server->sin_family = AF_INET; |
954 | server->sin_addr.s_addr = inet_addr (dotted); | |
955 | server->sin_port = htons (atoi (port)); | |
97e3214d | 956 | |
aa0b6932 JB |
957 | if (! fread (authentication, AUTH_KEY_LENGTH, 1, config)) |
958 | { | |
78da39c6 | 959 | message (TRUE, "%s: cannot read authentication info\n", progname); |
aa0b6932 JB |
960 | exit (EXIT_FAILURE); |
961 | } | |
46cec291 | 962 | |
aa0b6932 | 963 | fclose (config); |
97e3214d | 964 | |
aa0b6932 | 965 | return TRUE; |
97e3214d GM |
966 | } |
967 | ||
aa0b6932 | 968 | HSOCKET |
873fbd0b | 969 | set_tcp_socket (void) |
aa0b6932 JB |
970 | { |
971 | HSOCKET s; | |
972 | struct sockaddr_in server; | |
aa0b6932 JB |
973 | struct linger l_arg = {1, 1}; |
974 | char auth_string[AUTH_KEY_LENGTH + 1]; | |
9628b887 | 975 | |
aa0b6932 JB |
976 | if (! get_server_config (&server, auth_string)) |
977 | return INVALID_SOCKET; | |
978 | ||
b03d27bd | 979 | if (server.sin_addr.s_addr != inet_addr ("127.0.0.1")) |
9219db75 | 980 | message (FALSE, "%s: connected to remote socket at %s\n", |
b03d27bd JB |
981 | progname, inet_ntoa (server.sin_addr)); |
982 | ||
aa0b6932 JB |
983 | /* |
984 | * Open up an AF_INET socket | |
985 | */ | |
986 | if ((s = socket (AF_INET, SOCK_STREAM, IPPROTO_TCP)) < 0) | |
987 | { | |
d22b00e5 | 988 | sock_err_message ("socket"); |
aa0b6932 JB |
989 | return INVALID_SOCKET; |
990 | } | |
991 | ||
992 | /* | |
993 | * Set up the socket | |
994 | */ | |
995 | if (connect (s, (struct sockaddr *) &server, sizeof server) < 0) | |
996 | { | |
d22b00e5 | 997 | sock_err_message ("connect"); |
aa0b6932 JB |
998 | return INVALID_SOCKET; |
999 | } | |
1000 | ||
aa0b6932 JB |
1001 | setsockopt (s, SOL_SOCKET, SO_LINGER, (char *) &l_arg, sizeof l_arg); |
1002 | ||
1003 | /* | |
1004 | * Send the authentication | |
1005 | */ | |
1006 | auth_string[AUTH_KEY_LENGTH] = '\0'; | |
1007 | ||
486ba65f JR |
1008 | send_to_emacs (s, "-auth "); |
1009 | send_to_emacs (s, auth_string); | |
5ab73228 | 1010 | send_to_emacs (s, " "); |
aa0b6932 JB |
1011 | |
1012 | return s; | |
1013 | } | |
1014 | ||
b2ff54a0 JR |
1015 | |
1016 | /* Returns 1 if PREFIX is a prefix of STRING. */ | |
1017 | static int | |
988e88ab | 1018 | strprefix (const char *prefix, const char *string) |
b2ff54a0 | 1019 | { |
cb06b8dc | 1020 | return !strncmp (prefix, string, strlen (prefix)); |
b2ff54a0 JR |
1021 | } |
1022 | ||
a336ee5b CY |
1023 | /* Get tty name and type. If successful, return the type in TTY_TYPE |
1024 | and the name in TTY_NAME, and return 1. Otherwise, fail if NOABORT | |
1025 | is zero, or return 0 if NOABORT is non-zero. */ | |
1026 | ||
1027 | int | |
1028 | find_tty (char **tty_type, char **tty_name, int noabort) | |
1029 | { | |
1030 | char *type = egetenv ("TERM"); | |
1031 | char *name = ttyname (fileno (stdout)); | |
1032 | ||
1033 | if (!name) | |
1034 | { | |
1035 | if (noabort) | |
1036 | return 0; | |
1037 | else | |
1038 | { | |
1039 | message (TRUE, "%s: could not get terminal name\n", progname); | |
1040 | fail (); | |
1041 | } | |
1042 | } | |
1043 | ||
1044 | if (!type) | |
1045 | { | |
1046 | if (noabort) | |
1047 | return 0; | |
1048 | else | |
1049 | { | |
1050 | message (TRUE, "%s: please set the TERM variable to your terminal type\n", | |
1051 | progname); | |
1052 | fail (); | |
1053 | } | |
1054 | } | |
1055 | ||
1056 | if (strcmp (type, "eterm") == 0) | |
1057 | { | |
1058 | if (noabort) | |
1059 | return 0; | |
1060 | else | |
1061 | { | |
1062 | /* This causes nasty, MULTI_KBOARD-related input lockouts. */ | |
1063 | message (TRUE, "%s: opening a frame in an Emacs term buffer" | |
1064 | " is not supported\n", progname); | |
1065 | fail (); | |
1066 | } | |
1067 | } | |
1068 | ||
1069 | *tty_name = name; | |
1070 | *tty_type = type; | |
1071 | return 1; | |
1072 | } | |
1073 | ||
b2ff54a0 | 1074 | |
aa0b6932 | 1075 | #if !defined (NO_SOCKETS_IN_FILE_SYSTEM) |
46cec291 | 1076 | |
9f637eea GM |
1077 | /* Three possibilities: |
1078 | 2 - can't be `stat'ed (sets errno) | |
1079 | 1 - isn't owned by us | |
1080 | 0 - success: none of the above */ | |
1081 | ||
1082 | static int | |
873fbd0b | 1083 | socket_status (char *socket_name) |
9f637eea GM |
1084 | { |
1085 | struct stat statbfr; | |
1086 | ||
1087 | if (stat (socket_name, &statbfr) == -1) | |
1088 | return 2; | |
1089 | ||
1090 | if (statbfr.st_uid != geteuid ()) | |
1091 | return 1; | |
0b0d3e0b | 1092 | |
9f637eea GM |
1093 | return 0; |
1094 | } | |
1095 | ||
974b73e8 | 1096 | \f |
da8e1115 KL |
1097 | /* A signal handler that passes the signal to the Emacs process. |
1098 | Useful for SIGWINCH. */ | |
1099 | ||
9628b887 | 1100 | SIGTYPE |
428a555e | 1101 | pass_signal_to_emacs (int signalnum) |
9628b887 KL |
1102 | { |
1103 | int old_errno = errno; | |
1104 | ||
9f729af5 | 1105 | if (emacs_pid) |
428a555e | 1106 | kill (emacs_pid, signalnum); |
9f729af5 | 1107 | |
428a555e | 1108 | signal (signalnum, pass_signal_to_emacs); |
9f729af5 KL |
1109 | errno = old_errno; |
1110 | } | |
1111 | ||
0b0d3e0b KL |
1112 | /* Signal handler for SIGCONT; notify the Emacs process that it can |
1113 | now resume our tty frame. */ | |
1114 | ||
1115 | SIGTYPE | |
1116 | handle_sigcont (int signalnum) | |
1117 | { | |
1118 | int old_errno = errno; | |
1119 | ||
1120 | if (tcgetpgrp (1) == getpgrp ()) | |
1121 | { | |
1122 | /* We are in the foreground. */ | |
486ba65f | 1123 | send_to_emacs (emacs_socket, "-resume \n"); |
0b0d3e0b KL |
1124 | } |
1125 | else | |
1126 | { | |
1127 | /* We are in the background; cancel the continue. */ | |
1128 | kill (getpid (), SIGSTOP); | |
1129 | } | |
c6c53c3e KL |
1130 | |
1131 | signal (signalnum, handle_sigcont); | |
0b0d3e0b KL |
1132 | errno = old_errno; |
1133 | } | |
1134 | ||
1135 | /* Signal handler for SIGTSTP; notify the Emacs process that we are | |
1136 | going to sleep. Normally the suspend is initiated by Emacs via | |
1137 | server-handle-suspend-tty, but if the server gets out of sync with | |
1138 | reality, we may get a SIGTSTP on C-z. Handling this signal and | |
1139 | notifying Emacs about it should get things under control again. */ | |
1140 | ||
1141 | SIGTYPE | |
1142 | handle_sigtstp (int signalnum) | |
1143 | { | |
1144 | int old_errno = errno; | |
1145 | sigset_t set; | |
c0f342ab | 1146 | |
90843190 | 1147 | if (emacs_socket) |
486ba65f | 1148 | send_to_emacs (emacs_socket, "-suspend \n"); |
0b0d3e0b | 1149 | |
5ab73228 | 1150 | /* Unblock this signal and call the default handler by temporarily |
0b0d3e0b KL |
1151 | changing the handler and resignalling. */ |
1152 | sigprocmask (SIG_BLOCK, NULL, &set); | |
1153 | sigdelset (&set, signalnum); | |
1154 | signal (signalnum, SIG_DFL); | |
1155 | kill (getpid (), signalnum); | |
1156 | sigprocmask (SIG_SETMASK, &set, NULL); /* Let's the above signal through. */ | |
1157 | signal (signalnum, handle_sigtstp); | |
1158 | ||
1159 | errno = old_errno; | |
1160 | } | |
273b9028 CY |
1161 | |
1162 | ||
da8e1115 | 1163 | /* Set up signal handlers before opening a frame on the current tty. */ |
0b0d3e0b | 1164 | |
4d553a13 KL |
1165 | void |
1166 | init_signals (void) | |
9628b887 KL |
1167 | { |
1168 | /* Set up signal handlers. */ | |
428a555e | 1169 | signal (SIGWINCH, pass_signal_to_emacs); |
4ca927b4 KL |
1170 | |
1171 | /* Don't pass SIGINT and SIGQUIT to Emacs, because it has no way of | |
1172 | deciding which terminal the signal came from. C-g is now a | |
1173 | normal input event on secondary terminals. */ | |
1174 | #if 0 | |
428a555e KL |
1175 | signal (SIGINT, pass_signal_to_emacs); |
1176 | signal (SIGQUIT, pass_signal_to_emacs); | |
4ca927b4 | 1177 | #endif |
0b0d3e0b KL |
1178 | |
1179 | signal (SIGCONT, handle_sigcont); | |
1180 | signal (SIGTSTP, handle_sigtstp); | |
1181 | signal (SIGTTOU, handle_sigtstp); | |
9628b887 KL |
1182 | } |
1183 | ||
46cec291 | 1184 | |
aa0b6932 | 1185 | HSOCKET |
873fbd0b | 1186 | set_local_socket (void) |
46cec291 | 1187 | { |
aa0b6932 | 1188 | HSOCKET s; |
46cec291 | 1189 | struct sockaddr_un server; |
46cec291 | 1190 | |
e69233c2 | 1191 | /* |
46cec291 RS |
1192 | * Open up an AF_UNIX socket in this person's home directory |
1193 | */ | |
1194 | ||
1195 | if ((s = socket (AF_UNIX, SOCK_STREAM, 0)) < 0) | |
1196 | { | |
42073bfb | 1197 | message (TRUE, "%s: socket: %s\n", progname, strerror (errno)); |
aa0b6932 | 1198 | return INVALID_SOCKET; |
46cec291 | 1199 | } |
e69233c2 | 1200 | |
46cec291 | 1201 | server.sun_family = AF_UNIX; |
c5fee545 | 1202 | |
c5fee545 | 1203 | { |
9f637eea | 1204 | int sock_status = 0; |
5c9659d3 | 1205 | int default_sock = !socket_name; |
b80bf66e | 1206 | int saved_errno = 0; |
988e88ab J |
1207 | const char *server_name = "server"; |
1208 | const char *tmpdir; | |
0b0d3e0b | 1209 | |
8966b757 AS |
1210 | if (socket_name && !strchr (socket_name, '/') |
1211 | && !strchr (socket_name, '\\')) | |
1212 | { | |
1213 | /* socket_name is a file name component. */ | |
d3a6748c KL |
1214 | server_name = socket_name; |
1215 | socket_name = NULL; | |
1216 | default_sock = 1; /* Try both UIDs. */ | |
0734b0d0 | 1217 | } |
efb859b4 | 1218 | |
5c9659d3 | 1219 | if (default_sock) |
254107e4 | 1220 | { |
f77b11a0 JB |
1221 | tmpdir = egetenv ("TMPDIR"); |
1222 | if (!tmpdir) | |
b336bfcd GM |
1223 | { |
1224 | #ifdef DARWIN_OS | |
e6068ab3 YM |
1225 | #ifndef _CS_DARWIN_USER_TEMP_DIR |
1226 | #define _CS_DARWIN_USER_TEMP_DIR 65537 | |
1227 | #endif | |
b336bfcd GM |
1228 | size_t n = confstr (_CS_DARWIN_USER_TEMP_DIR, NULL, (size_t) 0); |
1229 | if (n > 0) | |
1230 | { | |
1231 | tmpdir = alloca (n); | |
1232 | confstr (_CS_DARWIN_USER_TEMP_DIR, tmpdir, n); | |
1233 | } | |
1234 | else | |
1235 | #endif | |
1236 | tmpdir = "/tmp"; | |
1237 | } | |
bc558f3e JB |
1238 | socket_name = alloca (strlen (tmpdir) + strlen (server_name) |
1239 | + EXTRA_SPACE); | |
f77b11a0 JB |
1240 | sprintf (socket_name, "%s/emacs%d/%s", |
1241 | tmpdir, (int) geteuid (), server_name); | |
254107e4 RS |
1242 | } |
1243 | ||
1244 | if (strlen (socket_name) < sizeof (server.sun_path)) | |
1245 | strcpy (server.sun_path, socket_name); | |
1246 | else | |
819b8f00 | 1247 | { |
78da39c6 | 1248 | message (TRUE, "%s: socket-name %s too long\n", |
974b73e8 | 1249 | progname, socket_name); |
819b8f00 KL |
1250 | fail (); |
1251 | } | |
efb859b4 | 1252 | |
9f637eea GM |
1253 | /* See if the socket exists, and if it's owned by us. */ |
1254 | sock_status = socket_status (server.sun_path); | |
152b6e83 | 1255 | saved_errno = errno; |
5c9659d3 | 1256 | if (sock_status && default_sock) |
efb859b4 | 1257 | { |
9f637eea GM |
1258 | /* Failing that, see if LOGNAME or USER exist and differ from |
1259 | our euid. If so, look for a socket based on the UID | |
1260 | associated with the name. This is reminiscent of the logic | |
1261 | that init_editfns uses to set the global Vuser_full_name. */ | |
e69233c2 | 1262 | |
7ce8671d | 1263 | char *user_name = (char *) egetenv ("LOGNAME"); |
293f9f2a | 1264 | |
9f637eea | 1265 | if (!user_name) |
7ce8671d | 1266 | user_name = (char *) egetenv ("USER"); |
e69233c2 | 1267 | |
9f637eea GM |
1268 | if (user_name) |
1269 | { | |
1270 | struct passwd *pw = getpwnam (user_name); | |
293f9f2a | 1271 | |
9f637eea GM |
1272 | if (pw && (pw->pw_uid != geteuid ())) |
1273 | { | |
1274 | /* We're running under su, apparently. */ | |
bc558f3e JB |
1275 | socket_name = alloca (strlen (tmpdir) + strlen (server_name) |
1276 | + EXTRA_SPACE); | |
f77b11a0 JB |
1277 | sprintf (socket_name, "%s/emacs%d/%s", |
1278 | tmpdir, (int) pw->pw_uid, server_name); | |
5c9659d3 SM |
1279 | |
1280 | if (strlen (socket_name) < sizeof (server.sun_path)) | |
1281 | strcpy (server.sun_path, socket_name); | |
1282 | else | |
1283 | { | |
78da39c6 | 1284 | message (TRUE, "%s: socket-name %s too long\n", |
aa0b6932 | 1285 | progname, socket_name); |
65396510 | 1286 | exit (EXIT_FAILURE); |
5c9659d3 SM |
1287 | } |
1288 | ||
9f637eea | 1289 | sock_status = socket_status (server.sun_path); |
b80bf66e | 1290 | saved_errno = errno; |
9f637eea | 1291 | } |
293f9f2a RS |
1292 | else |
1293 | errno = saved_errno; | |
9f637eea | 1294 | } |
efb859b4 | 1295 | } |
e69233c2 | 1296 | |
aa0b6932 JB |
1297 | switch (sock_status) |
1298 | { | |
1299 | case 1: | |
974b73e8 KL |
1300 | /* There's a socket, but it isn't owned by us. This is OK if |
1301 | we are root. */ | |
1302 | if (0 != geteuid ()) | |
1303 | { | |
1304 | message (TRUE, "%s: Invalid socket owner\n", progname); | |
aa0b6932 | 1305 | return INVALID_SOCKET; |
974b73e8 KL |
1306 | } |
1307 | break; | |
aa0b6932 JB |
1308 | |
1309 | case 2: | |
974b73e8 KL |
1310 | /* `stat' failed */ |
1311 | if (saved_errno == ENOENT) | |
1312 | message (TRUE, | |
1313 | "%s: can't find socket; have you started the server?\n\ | |
45adde32 | 1314 | To start the server in Emacs, type \"M-x server-start\".\n", |
aa0b6932 | 1315 | progname); |
974b73e8 KL |
1316 | else |
1317 | message (TRUE, "%s: can't stat %s: %s\n", | |
aa0b6932 | 1318 | progname, server.sun_path, strerror (saved_errno)); |
974b73e8 | 1319 | return INVALID_SOCKET; |
aa0b6932 | 1320 | } |
efb859b4 | 1321 | } |
46cec291 | 1322 | |
4e23f2ba JB |
1323 | if (connect (s, (struct sockaddr *) &server, strlen (server.sun_path) + 2) |
1324 | < 0) | |
46cec291 | 1325 | { |
42073bfb | 1326 | message (TRUE, "%s: connect: %s\n", progname, strerror (errno)); |
aa0b6932 | 1327 | return INVALID_SOCKET; |
46cec291 | 1328 | } |
23a7488d | 1329 | |
aa0b6932 JB |
1330 | return s; |
1331 | } | |
1332 | #endif /* ! NO_SOCKETS_IN_FILE_SYSTEM */ | |
1333 | ||
1334 | HSOCKET | |
636b507b | 1335 | set_socket (int no_exit_if_error) |
aa0b6932 | 1336 | { |
b03d27bd | 1337 | HSOCKET s; |
c0f342ab | 1338 | |
b03d27bd | 1339 | INITIALIZE (); |
c0f342ab | 1340 | |
aa0b6932 | 1341 | #ifndef NO_SOCKETS_IN_FILE_SYSTEM |
b03d27bd JB |
1342 | /* Explicit --socket-name argument. */ |
1343 | if (socket_name) | |
46cec291 | 1344 | { |
b03d27bd | 1345 | s = set_local_socket (); |
636b507b | 1346 | if ((s != INVALID_SOCKET) || no_exit_if_error) |
974b73e8 | 1347 | return s; |
355a326e | 1348 | message (TRUE, "%s: error accessing socket \"%s\"\n", |
974b73e8 | 1349 | progname, socket_name); |
b03d27bd | 1350 | exit (EXIT_FAILURE); |
46cec291 | 1351 | } |
b03d27bd JB |
1352 | #endif |
1353 | ||
1354 | /* Explicit --server-file arg or EMACS_SERVER_FILE variable. */ | |
1355 | if (!server_file) | |
7ce8671d | 1356 | server_file = egetenv ("EMACS_SERVER_FILE"); |
46cec291 | 1357 | |
b03d27bd | 1358 | if (server_file) |
23a7488d | 1359 | { |
b03d27bd | 1360 | s = set_tcp_socket (); |
636b507b | 1361 | if ((s != INVALID_SOCKET) || no_exit_if_error) |
974b73e8 | 1362 | return s; |
c0f342ab | 1363 | |
78da39c6 | 1364 | message (TRUE, "%s: error accessing server file \"%s\"\n", |
974b73e8 | 1365 | progname, server_file); |
b03d27bd | 1366 | exit (EXIT_FAILURE); |
23a7488d | 1367 | } |
c0f342ab | 1368 | |
b03d27bd JB |
1369 | #ifndef NO_SOCKETS_IN_FILE_SYSTEM |
1370 | /* Implicit local socket. */ | |
1371 | s = set_local_socket (); | |
1372 | if (s != INVALID_SOCKET) | |
1373 | return s; | |
1374 | #endif | |
23a7488d | 1375 | |
b03d27bd JB |
1376 | /* Implicit server file. */ |
1377 | server_file = "server"; | |
1378 | s = set_tcp_socket (); | |
636b507b | 1379 | if ((s != INVALID_SOCKET) || no_exit_if_error) |
b03d27bd JB |
1380 | return s; |
1381 | ||
1382 | /* No implicit or explicit socket, and no alternate editor. */ | |
42073bfb | 1383 | message (TRUE, "%s: No socket or alternate editor. Please use:\n\n" |
b03d27bd JB |
1384 | #ifndef NO_SOCKETS_IN_FILE_SYSTEM |
1385 | "\t--socket-name\n" | |
ee6a193c | 1386 | #endif |
b03d27bd JB |
1387 | "\t--server-file (or environment variable EMACS_SERVER_FILE)\n\ |
1388 | \t--alternate-editor (or environment variable ALTERNATE_EDITOR)\n", | |
1389 | progname); | |
1390 | exit (EXIT_FAILURE); | |
aa0b6932 | 1391 | } |
46cec291 | 1392 | |
0e0dced5 JB |
1393 | #ifdef WINDOWSNT |
1394 | FARPROC set_fg; /* Pointer to AllowSetForegroundWindow. */ | |
1395 | FARPROC get_wc; /* Pointer to RealGetWindowClassA. */ | |
1396 | ||
1397 | BOOL CALLBACK | |
7c3320d8 | 1398 | w32_find_emacs_process (HWND hWnd, LPARAM lParam) |
0e0dced5 JB |
1399 | { |
1400 | DWORD pid; | |
1401 | char class[6]; | |
1402 | ||
1403 | /* Reject any window not of class "Emacs". */ | |
1404 | if (! get_wc (hWnd, class, sizeof (class)) | |
1405 | || strcmp (class, "Emacs")) | |
1406 | return TRUE; | |
1407 | ||
1408 | /* We only need the process id, not the thread id. */ | |
1409 | (void) GetWindowThreadProcessId (hWnd, &pid); | |
1410 | ||
1411 | /* Not the one we're looking for. */ | |
1412 | if (pid != (DWORD) emacs_pid) return TRUE; | |
1413 | ||
1414 | /* OK, let's raise it. */ | |
1415 | set_fg (emacs_pid); | |
1416 | ||
1417 | /* Stop enumeration. */ | |
1418 | return FALSE; | |
1419 | } | |
1420 | ||
1421 | /* | |
1422 | * Search for a window of class "Emacs" and owned by a process with | |
1423 | * process id = emacs_pid. If found, allow it to grab the focus. | |
1424 | */ | |
1425 | void | |
7c3320d8 | 1426 | w32_give_focus (void) |
0e0dced5 | 1427 | { |
ff90fbde | 1428 | HANDLE user32; |
0e0dced5 | 1429 | |
71b8f735 | 1430 | /* It shouldn't happen when dealing with TCP sockets. */ |
0e0dced5 JB |
1431 | if (!emacs_pid) return; |
1432 | ||
ff90fbde JR |
1433 | user32 = GetModuleHandle ("user32.dll"); |
1434 | ||
1435 | if (!user32) | |
1436 | return; | |
0e0dced5 JB |
1437 | |
1438 | /* Modern Windows restrict which processes can set the foreground window. | |
1439 | emacsclient can allow Emacs to grab the focus by calling the function | |
1440 | AllowSetForegroundWindow. Unfortunately, older Windows (W95, W98 and | |
1441 | NT) lack this function, so we have to check its availability. */ | |
ff90fbde JR |
1442 | if ((set_fg = GetProcAddress (user32, "AllowSetForegroundWindow")) |
1443 | && (get_wc = GetProcAddress (user32, "RealGetWindowClassA"))) | |
0e0dced5 | 1444 | EnumWindows (w32_find_emacs_process, (LPARAM) 0); |
0e0dced5 JB |
1445 | } |
1446 | #endif | |
1447 | ||
636b507b DN |
1448 | /* Start the emacs daemon and try to connect to it. */ |
1449 | ||
1450 | void | |
1451 | start_daemon_and_retry_set_socket (void) | |
1452 | { | |
802bdb3c | 1453 | #ifndef WINDOWSNT |
636b507b DN |
1454 | pid_t dpid; |
1455 | int status; | |
636b507b DN |
1456 | |
1457 | dpid = fork (); | |
1458 | ||
1459 | if (dpid > 0) | |
1460 | { | |
fd95644b DN |
1461 | pid_t w; |
1462 | w = waitpid (dpid, &status, WUNTRACED | WCONTINUED); | |
636b507b | 1463 | |
361358ea | 1464 | if ((w == -1) || !WIFEXITED (status) || WEXITSTATUS (status)) |
fd95644b DN |
1465 | { |
1466 | message (TRUE, "Error: Could not start the Emacs daemon\n"); | |
1467 | exit (EXIT_FAILURE); | |
1468 | } | |
1469 | ||
1470 | /* Try connecting, the daemon should have started by now. */ | |
1471 | message (TRUE, "Emacs daemon should have started, trying to connect again\n"); | |
636b507b | 1472 | if ((emacs_socket = set_socket (1)) == INVALID_SOCKET) |
fd95644b DN |
1473 | { |
1474 | message (TRUE, "Error: Cannot connect even after starting the Emacs daemon\n"); | |
1475 | exit (EXIT_FAILURE); | |
1476 | } | |
636b507b DN |
1477 | } |
1478 | else if (dpid < 0) | |
1479 | { | |
fd95644b | 1480 | fprintf (stderr, "Error: Cannot fork!\n"); |
6ab88e02 | 1481 | exit (EXIT_FAILURE); |
636b507b DN |
1482 | } |
1483 | else | |
1484 | { | |
988e88ab J |
1485 | char emacs[] = "emacs"; |
1486 | char daemon[] = "--daemon"; | |
1487 | char *d_argv[] = {emacs, daemon, 0 }; | |
636b507b DN |
1488 | if (socket_name != NULL) |
1489 | { | |
1490 | /* Pass --daemon=socket_name as argument. */ | |
988e88ab | 1491 | const char *deq = "--daemon="; |
636b507b DN |
1492 | char *daemon_arg = alloca (strlen (deq) |
1493 | + strlen (socket_name) + 1); | |
1494 | strcpy (daemon_arg, deq); | |
1495 | strcat (daemon_arg, socket_name); | |
1496 | d_argv[1] = daemon_arg; | |
1497 | } | |
1498 | execvp ("emacs", d_argv); | |
1499 | message (TRUE, "%s: error starting emacs daemon\n", progname); | |
1500 | } | |
802bdb3c | 1501 | #endif /* WINDOWSNT */ |
636b507b DN |
1502 | } |
1503 | ||
aa0b6932 | 1504 | int |
873fbd0b | 1505 | main (int argc, char **argv) |
aa0b6932 | 1506 | { |
aa0b6932 | 1507 | int i, rl, needlf = 0; |
974b73e8 | 1508 | char *cwd, *str; |
aa0b6932 | 1509 | char string[BUFSIZ+1]; |
802bdb3c | 1510 | int null_socket_name, null_server_file, start_daemon_if_needed; |
3ecb8d93 | 1511 | int exit_status = EXIT_SUCCESS; |
aa0b6932 | 1512 | |
974b73e8 | 1513 | main_argv = argv; |
aa0b6932 JB |
1514 | progname = argv[0]; |
1515 | ||
ff90fbde JR |
1516 | #ifdef WINDOWSNT |
1517 | /* On Windows 7 and later, we need to explicitly associate emacsclient | |
1518 | with emacs so the UI behaves sensibly. */ | |
1519 | w32_set_user_model_id (); | |
1520 | #endif | |
1521 | ||
aa0b6932 JB |
1522 | /* Process options. */ |
1523 | decode_options (argc, argv); | |
1524 | ||
273b9028 | 1525 | if ((argc - optind < 1) && !eval && current_frame) |
23a7488d | 1526 | { |
974b73e8 KL |
1527 | message (TRUE, "%s: file name or argument required\n" |
1528 | "Try `%s --help' for more information\n", | |
1529 | progname, progname); | |
aa0b6932 | 1530 | exit (EXIT_FAILURE); |
23a7488d RS |
1531 | } |
1532 | ||
636b507b DN |
1533 | /* If alternate_editor is the empty string, start the emacs daemon |
1534 | in case of failure to connect. */ | |
1535 | start_daemon_if_needed = (alternate_editor | |
1536 | && (alternate_editor[0] == '\0')); | |
1537 | if (start_daemon_if_needed) | |
1538 | { | |
1539 | /* set_socket changes the values for socket_name and | |
1540 | server_file, we need to reset them, if they were NULL before | |
1541 | for the second call to set_socket. */ | |
1542 | null_socket_name = (socket_name == NULL); | |
1543 | null_server_file = (server_file == NULL); | |
1544 | } | |
aa0b6932 | 1545 | |
636b507b DN |
1546 | if ((emacs_socket = set_socket (alternate_editor |
1547 | || start_daemon_if_needed)) == INVALID_SOCKET) | |
1548 | if (start_daemon_if_needed) | |
1549 | { | |
1550 | /* Reset socket_name and server_file if they were NULL | |
1551 | before the set_socket call. */ | |
1552 | if (null_socket_name) | |
1553 | socket_name = NULL; | |
1554 | if (null_server_file) | |
1555 | server_file = NULL; | |
1556 | ||
1557 | start_daemon_and_retry_set_socket (); | |
1558 | } | |
1559 | else | |
1560 | fail (); | |
974b73e8 KL |
1561 | |
1562 | cwd = get_current_dir_name (); | |
46cec291 RS |
1563 | if (cwd == 0) |
1564 | { | |
1565 | /* getwd puts message in STRING if it fails. */ | |
974b73e8 KL |
1566 | message (TRUE, "%s: %s\n", progname, |
1567 | "Cannot get current working directory"); | |
819b8f00 | 1568 | fail (); |
46cec291 RS |
1569 | } |
1570 | ||
c66648e0 | 1571 | #ifdef WINDOWSNT |
0e0dced5 | 1572 | w32_give_focus (); |
c66648e0 JB |
1573 | #endif |
1574 | ||
273b9028 | 1575 | /* Send over our environment and current directory. */ |
59e085e0 KL |
1576 | if (!current_frame) |
1577 | { | |
1578 | extern char **environ; | |
1579 | int i; | |
1580 | for (i = 0; environ[i]; i++) | |
1581 | { | |
486ba65f JR |
1582 | send_to_emacs (emacs_socket, "-env "); |
1583 | quote_argument (emacs_socket, environ[i]); | |
1584 | send_to_emacs (emacs_socket, " "); | |
59e085e0 | 1585 | } |
2828d5f9 | 1586 | } |
ba528748 SM |
1587 | send_to_emacs (emacs_socket, "-dir "); |
1588 | quote_argument (emacs_socket, cwd); | |
1589 | send_to_emacs (emacs_socket, "/"); | |
1590 | send_to_emacs (emacs_socket, " "); | |
2828d5f9 | 1591 | |
6afdd335 | 1592 | retry: |
5212210c | 1593 | if (nowait) |
486ba65f | 1594 | send_to_emacs (emacs_socket, "-nowait "); |
292d74a3 | 1595 | |
92071250 | 1596 | if (current_frame) |
486ba65f | 1597 | send_to_emacs (emacs_socket, "-current-frame "); |
c0f342ab | 1598 | |
30be2360 | 1599 | if (display) |
87209357 | 1600 | { |
486ba65f JR |
1601 | send_to_emacs (emacs_socket, "-display "); |
1602 | quote_argument (emacs_socket, display); | |
1603 | send_to_emacs (emacs_socket, " "); | |
87209357 | 1604 | } |
30be2360 | 1605 | |
0191e222 CY |
1606 | if (parent_id) |
1607 | { | |
1608 | send_to_emacs (emacs_socket, "-parent-id "); | |
1609 | quote_argument (emacs_socket, parent_id); | |
1610 | send_to_emacs (emacs_socket, " "); | |
1611 | } | |
1612 | ||
8536c0f5 CY |
1613 | /* If using the current frame, send tty information to Emacs anyway. |
1614 | In daemon mode, Emacs may need to occupy this tty if no other | |
1615 | frame is available. */ | |
322ca650 | 1616 | if (tty || (current_frame && !eval)) |
9628b887 | 1617 | { |
273b9028 | 1618 | char *tty_type, *tty_name; |
0b0d3e0b | 1619 | |
273b9028 CY |
1620 | if (find_tty (&tty_type, &tty_name, !tty)) |
1621 | { | |
b2ff54a0 | 1622 | #if !defined (NO_SOCKETS_IN_FILE_SYSTEM) |
273b9028 | 1623 | init_signals (); |
b2ff54a0 | 1624 | #endif |
273b9028 CY |
1625 | send_to_emacs (emacs_socket, "-tty "); |
1626 | quote_argument (emacs_socket, tty_name); | |
1627 | send_to_emacs (emacs_socket, " "); | |
1628 | quote_argument (emacs_socket, tty_type); | |
1629 | send_to_emacs (emacs_socket, " "); | |
1630 | } | |
9628b887 | 1631 | } |
77134727 | 1632 | |
273b9028 | 1633 | if (!current_frame && !tty) |
486ba65f | 1634 | send_to_emacs (emacs_socket, "-window-system "); |
0b0d3e0b | 1635 | |
87209357 | 1636 | if ((argc - optind > 0)) |
5212210c | 1637 | { |
87209357 | 1638 | for (i = optind; i < argc; i++) |
46cec291 | 1639 | { |
0b0d3e0b | 1640 | |
87209357 | 1641 | if (eval) |
0b0d3e0b | 1642 | { |
974b73e8 | 1643 | /* Don't prepend cwd or anything like that. */ |
486ba65f JR |
1644 | send_to_emacs (emacs_socket, "-eval "); |
1645 | quote_argument (emacs_socket, argv[i]); | |
1646 | send_to_emacs (emacs_socket, " "); | |
0b0d3e0b KL |
1647 | continue; |
1648 | } | |
1649 | ||
1650 | if (*argv[i] == '+') | |
1651 | { | |
87209357 EZ |
1652 | char *p = argv[i] + 1; |
1653 | while (isdigit ((unsigned char) *p) || *p == ':') p++; | |
0b0d3e0b KL |
1654 | if (*p == 0) |
1655 | { | |
486ba65f JR |
1656 | send_to_emacs (emacs_socket, "-position "); |
1657 | quote_argument (emacs_socket, argv[i]); | |
1658 | send_to_emacs (emacs_socket, " "); | |
0b0d3e0b KL |
1659 | continue; |
1660 | } | |
0b0d3e0b | 1661 | } |
6cde1b21 JB |
1662 | #ifdef WINDOWSNT |
1663 | else if (! file_name_absolute_p (argv[i]) | |
1664 | && (isalpha (argv[i][0]) && argv[i][1] == ':')) | |
1665 | /* Windows can have a different default directory for each | |
1666 | drive, so the cwd passed via "-dir" is not sufficient | |
1667 | to account for that. | |
1668 | If the user uses <drive>:<relpath>, we hence need to be | |
1669 | careful to expand <relpath> with the default directory | |
1670 | corresponding to <drive>. */ | |
1671 | { | |
1672 | char *filename = (char *) xmalloc (MAX_PATH); | |
1673 | DWORD size; | |
1674 | ||
1675 | size = GetFullPathName (argv[i], MAX_PATH, filename, NULL); | |
1676 | if (size > 0 && size < MAX_PATH) | |
1677 | argv[i] = filename; | |
1678 | else | |
1679 | free (filename); | |
1680 | } | |
1681 | #endif | |
0b0d3e0b | 1682 | |
486ba65f | 1683 | send_to_emacs (emacs_socket, "-file "); |
486ba65f JR |
1684 | quote_argument (emacs_socket, argv[i]); |
1685 | send_to_emacs (emacs_socket, " "); | |
0b0d3e0b | 1686 | } |
46cec291 | 1687 | } |
273b9028 | 1688 | else if (eval) |
87209357 | 1689 | { |
273b9028 CY |
1690 | /* Read expressions interactively. */ |
1691 | while ((str = fgets (string, BUFSIZ, stdin))) | |
1692 | { | |
1693 | send_to_emacs (emacs_socket, "-eval "); | |
1694 | quote_argument (emacs_socket, str); | |
1695 | } | |
1696 | send_to_emacs (emacs_socket, " "); | |
87209357 | 1697 | } |
0b0d3e0b | 1698 | |
486ba65f | 1699 | send_to_emacs (emacs_socket, "\n"); |
46cec291 | 1700 | |
fc2040c0 KL |
1701 | /* Wait for an answer. */ |
1702 | if (!eval && !tty && !nowait) | |
30be2360 SM |
1703 | { |
1704 | printf ("Waiting for Emacs..."); | |
1705 | needlf = 2; | |
1706 | } | |
46cec291 | 1707 | fflush (stdout); |
0b0d3e0b | 1708 | fsync (1); |
46cec291 | 1709 | |
3cf8c6aa | 1710 | /* Now, wait for an answer and print any messages. */ |
3ecb8d93 WS |
1711 | while (exit_status == EXIT_SUCCESS |
1712 | && (rl = recv (emacs_socket, string, BUFSIZ, 0)) > 0) | |
3cf8c6aa | 1713 | { |
974b73e8 KL |
1714 | char *p; |
1715 | string[rl] = '\0'; | |
1716 | ||
1717 | p = string + strlen (string) - 1; | |
1718 | while (p > string && *p == '\n') | |
0b0d3e0b KL |
1719 | *p-- = 0; |
1720 | ||
31fa6595 | 1721 | if (strprefix ("-emacs-pid ", string)) |
4d553a13 | 1722 | { |
6afdd335 | 1723 | /* -emacs-pid PID: The process id of the Emacs process. */ |
77134727 KL |
1724 | emacs_pid = strtol (string + strlen ("-emacs-pid"), NULL, 10); |
1725 | } | |
974b73e8 | 1726 | else if (strprefix ("-window-system-unsupported ", string)) |
6afdd335 KL |
1727 | { |
1728 | /* -window-system-unsupported: Emacs was compiled without X | |
1729 | support. Try again on the terminal. */ | |
6afdd335 KL |
1730 | nowait = 0; |
1731 | tty = 1; | |
1732 | goto retry; | |
1733 | } | |
974b73e8 | 1734 | else if (strprefix ("-print ", string)) |
77134727 | 1735 | { |
6afdd335 | 1736 | /* -print STRING: Print STRING on the terminal. */ |
974b73e8 | 1737 | str = unquote_argument (string + strlen ("-print ")); |
0b0d3e0b | 1738 | if (needlf) |
77134727 | 1739 | printf ("\n"); |
0b0d3e0b KL |
1740 | printf ("%s", str); |
1741 | needlf = str[0] == '\0' ? needlf : str[strlen (str) - 1] != '\n'; | |
77134727 | 1742 | } |
974b73e8 | 1743 | else if (strprefix ("-error ", string)) |
77134727 | 1744 | { |
6afdd335 | 1745 | /* -error DESCRIPTION: Signal an error on the terminal. */ |
974b73e8 | 1746 | str = unquote_argument (string + strlen ("-error ")); |
0b0d3e0b KL |
1747 | if (needlf) |
1748 | printf ("\n"); | |
974b73e8 | 1749 | fprintf (stderr, "*ERROR*: %s", str); |
0b0d3e0b | 1750 | needlf = str[0] == '\0' ? needlf : str[strlen (str) - 1] != '\n'; |
3ecb8d93 | 1751 | exit_status = EXIT_FAILURE; |
0b0d3e0b | 1752 | } |
c801ad51 | 1753 | #ifdef SIGSTOP |
382707ec | 1754 | else if (strprefix ("-suspend ", string)) |
0b0d3e0b | 1755 | { |
6afdd335 | 1756 | /* -suspend: Suspend this terminal, i.e., stop the process. */ |
0b0d3e0b | 1757 | if (needlf) |
77134727 | 1758 | printf ("\n"); |
0b0d3e0b KL |
1759 | needlf = 0; |
1760 | kill (0, SIGSTOP); | |
4d553a13 | 1761 | } |
b2ff54a0 | 1762 | #endif |
4d553a13 KL |
1763 | else |
1764 | { | |
6afdd335 | 1765 | /* Unknown command. */ |
0b0d3e0b | 1766 | if (needlf) |
4d553a13 | 1767 | printf ("\n"); |
974b73e8 | 1768 | printf ("*ERROR*: Unknown message: %s", string); |
3ecb8d93 WS |
1769 | needlf = string[0] |
1770 | == '\0' ? needlf : string[strlen (string) - 1] != '\n'; | |
4d553a13 | 1771 | } |
3cf8c6aa SM |
1772 | } |
1773 | ||
1774 | if (needlf) | |
1775 | printf ("\n"); | |
1776 | fflush (stdout); | |
0b0d3e0b | 1777 | fsync (1); |
23a7488d | 1778 | |
3ecb8d93 WS |
1779 | if (rl < 0) |
1780 | exit_status = EXIT_FAILURE; | |
1781 | ||
4b7b77f6 | 1782 | CLOSE_SOCKET (emacs_socket); |
3ecb8d93 | 1783 | return exit_status; |
46cec291 RS |
1784 | } |
1785 | ||
1e7823d0 | 1786 | #endif /* HAVE_SOCKETS && HAVE_INET_SOCKETS */ |
aa0b6932 | 1787 | |
27711600 RM |
1788 | \f |
1789 | #ifndef HAVE_STRERROR | |
1790 | char * | |
1791 | strerror (errnum) | |
1792 | int errnum; | |
1793 | { | |
1794 | extern char *sys_errlist[]; | |
1795 | extern int sys_nerr; | |
1796 | ||
1797 | if (errnum >= 0 && errnum < sys_nerr) | |
1798 | return sys_errlist[errnum]; | |
1799 | return (char *) "Unknown error"; | |
1800 | } | |
1801 | ||
1802 | #endif /* ! HAVE_STRERROR */ | |
ab5796a9 | 1803 | |
65396510 TTN |
1804 | |
1805 | /* emacsclient.c ends here */ |