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comparison src/clientserver.c @ 19920:5e41b2e63c73 v8.2.0516

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patch 8.2.0516: client-server code is spread out Commit: https://github.com/vim/vim/commit/f87a0400fd81862c33d6ad2291a56e178db7dddd Author: Bram Moolenaar <Bram@vim.org> Date: Sun Apr 5 20:21:03 2020 +0200 patch 8.2.0516: client-server code is spread out Problem: Client-server code is spread out. Solution: Move client-server code to a new file. (Yegappan Lakshmanan, closes #5885)
author Bram Moolenaar <Bram@vim.org>
date Sun, 05 Apr 2020 20:30:35 +0200
parents
children 72b437855299
comparison
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19919:b4b102849236 19920:5e41b2e63c73
1 /* vi:set ts=8 sts=4 sw=4 noet:
2 *
3 * VIM - Vi IMproved by Bram Moolenaar
4 *
5 * Do ":help uganda" in Vim to read copying and usage conditions.
6 * Do ":help credits" in Vim to see a list of people who contributed.
7 * See README.txt for an overview of the Vim source code.
8 */
9
10 /*
11 * clientserver.c: functions for Client Server functionality
12 */
13
14 #include "vim.h"
15
16 #if defined(FEAT_CLIENTSERVER) || defined(PROTO)
17
18 static void cmdsrv_main(int *argc, char **argv, char_u *serverName_arg, char_u **serverStr);
19 static char_u *serverMakeName(char_u *arg, char *cmd);
20
21 /*
22 * Replace termcodes such as <CR> and insert as key presses if there is room.
23 */
24 void
25 server_to_input_buf(char_u *str)
26 {
27 char_u *ptr = NULL;
28 char_u *cpo_save = p_cpo;
29
30 // Set 'cpoptions' the way we want it.
31 // B set - backslashes are *not* treated specially
32 // k set - keycodes are *not* reverse-engineered
33 // < unset - <Key> sequences *are* interpreted
34 // The last but one parameter of replace_termcodes() is TRUE so that the
35 // <lt> sequence is recognised - needed for a real backslash.
36 p_cpo = (char_u *)"Bk";
37 str = replace_termcodes((char_u *)str, &ptr, REPTERM_DO_LT, NULL);
38 p_cpo = cpo_save;
39
40 if (*ptr != NUL) // trailing CTRL-V results in nothing
41 {
42 /*
43 * Add the string to the input stream.
44 * Can't use add_to_input_buf() here, we now have K_SPECIAL bytes.
45 *
46 * First clear typed characters from the typeahead buffer, there could
47 * be half a mapping there. Then append to the existing string, so
48 * that multiple commands from a client are concatenated.
49 */
50 if (typebuf.tb_maplen < typebuf.tb_len)
51 del_typebuf(typebuf.tb_len - typebuf.tb_maplen, typebuf.tb_maplen);
52 (void)ins_typebuf(str, REMAP_NONE, typebuf.tb_len, TRUE, FALSE);
53
54 // Let input_available() know we inserted text in the typeahead
55 // buffer.
56 typebuf_was_filled = TRUE;
57 }
58 vim_free((char_u *)ptr);
59 }
60
61 /*
62 * Evaluate an expression that the client sent to a string.
63 */
64 char_u *
65 eval_client_expr_to_string(char_u *expr)
66 {
67 char_u *res;
68 int save_dbl = debug_break_level;
69 int save_ro = redir_off;
70 funccal_entry_T funccal_entry;
71 int did_save_funccal = FALSE;
72
73 // Evaluate the expression at the toplevel, don't use variables local to
74 // the calling function. Except when in debug mode.
75 if (!debug_mode)
76 {
77 save_funccal(&funccal_entry);
78 did_save_funccal = TRUE;
79 }
80
81 // Disable debugging, otherwise Vim hangs, waiting for "cont" to be
82 // typed.
83 debug_break_level = -1;
84 redir_off = 0;
85 // Do not display error message, otherwise Vim hangs, waiting for "cont"
86 // to be typed. Do generate errors so that try/catch works.
87 ++emsg_silent;
88
89 res = eval_to_string(expr, NULL, TRUE);
90
91 debug_break_level = save_dbl;
92 redir_off = save_ro;
93 --emsg_silent;
94 if (emsg_silent < 0)
95 emsg_silent = 0;
96 if (did_save_funccal)
97 restore_funccal();
98
99 // A client can tell us to redraw, but not to display the cursor, so do
100 // that here.
101 setcursor();
102 out_flush_cursor(FALSE, FALSE);
103
104 return res;
105 }
106
107 /*
108 * Evaluate a command or expression sent to ourselves.
109 */
110 int
111 sendToLocalVim(char_u *cmd, int asExpr, char_u **result)
112 {
113 if (asExpr)
114 {
115 char_u *ret;
116
117 ret = eval_client_expr_to_string(cmd);
118 if (result != NULL)
119 {
120 if (ret == NULL)
121 {
122 char *err = _(e_invexprmsg);
123 size_t len = STRLEN(cmd) + STRLEN(err) + 5;
124 char_u *msg;
125
126 msg = alloc(len);
127 if (msg != NULL)
128 vim_snprintf((char *)msg, len, "%s: \"%s\"", err, cmd);
129 *result = msg;
130 }
131 else
132 *result = ret;
133 }
134 else
135 vim_free(ret);
136 return ret == NULL ? -1 : 0;
137 }
138 server_to_input_buf(cmd);
139 return 0;
140 }
141
142 /*
143 * If conversion is needed, convert "data" from "client_enc" to 'encoding' and
144 * return an allocated string. Otherwise return "data".
145 * "*tofree" is set to the result when it needs to be freed later.
146 */
147 char_u *
148 serverConvert(
149 char_u *client_enc UNUSED,
150 char_u *data,
151 char_u **tofree)
152 {
153 char_u *res = data;
154
155 *tofree = NULL;
156 if (client_enc != NULL && p_enc != NULL)
157 {
158 vimconv_T vimconv;
159
160 vimconv.vc_type = CONV_NONE;
161 if (convert_setup(&vimconv, client_enc, p_enc) != FAIL
162 && vimconv.vc_type != CONV_NONE)
163 {
164 res = string_convert(&vimconv, data, NULL);
165 if (res == NULL)
166 res = data;
167 else
168 *tofree = res;
169 }
170 convert_setup(&vimconv, NULL, NULL);
171 }
172 return res;
173 }
174 #endif
175
176 #if (defined(FEAT_CLIENTSERVER) && !defined(NO_VIM_MAIN)) || defined(PROTO)
177
178 /*
179 * Common code for the X command server and the Win32 command server.
180 */
181
182 static char_u *build_drop_cmd(int filec, char **filev, int tabs, int sendReply);
183
184 /*
185 * Do the client-server stuff, unless "--servername ''" was used.
186 */
187 void
188 exec_on_server(mparm_T *parmp)
189 {
190 if (parmp->serverName_arg == NULL || *parmp->serverName_arg != NUL)
191 {
192 # ifdef MSWIN
193 // Initialise the client/server messaging infrastructure.
194 serverInitMessaging();
195 # endif
196
197 /*
198 * When a command server argument was found, execute it. This may
199 * exit Vim when it was successful. Otherwise it's executed further
200 * on. Remember the encoding used here in "serverStrEnc".
201 */
202 if (parmp->serverArg)
203 {
204 cmdsrv_main(&parmp->argc, parmp->argv,
205 parmp->serverName_arg, &parmp->serverStr);
206 parmp->serverStrEnc = vim_strsave(p_enc);
207 }
208
209 // If we're still running, get the name to register ourselves.
210 // On Win32 can register right now, for X11 need to setup the
211 // clipboard first, it's further down.
212 parmp->servername = serverMakeName(parmp->serverName_arg,
213 parmp->argv[0]);
214 # ifdef MSWIN
215 if (parmp->servername != NULL)
216 {
217 serverSetName(parmp->servername);
218 vim_free(parmp->servername);
219 }
220 # endif
221 }
222 }
223
224 /*
225 * Prepare for running as a Vim server.
226 */
227 void
228 prepare_server(mparm_T *parmp)
229 {
230 # if defined(FEAT_X11)
231 /*
232 * Register for remote command execution with :serversend and --remote
233 * unless there was a -X or a --servername '' on the command line.
234 * Only register nongui-vim's with an explicit --servername argument,
235 * or when compiling with autoservername.
236 * When running as root --servername is also required.
237 */
238 if (X_DISPLAY != NULL && parmp->servername != NULL && (
239 # if defined(FEAT_AUTOSERVERNAME) || defined(FEAT_GUI)
240 (
241 # if defined(FEAT_AUTOSERVERNAME)
242 1
243 # else
244 gui.in_use
245 # endif
246 # ifdef UNIX
247 && getuid() != ROOT_UID
248 # endif
249 ) ||
250 # endif
251 parmp->serverName_arg != NULL))
252 {
253 (void)serverRegisterName(X_DISPLAY, parmp->servername);
254 vim_free(parmp->servername);
255 TIME_MSG("register server name");
256 }
257 else
258 serverDelayedStartName = parmp->servername;
259 # endif
260
261 /*
262 * Execute command ourselves if we're here because the send failed (or
263 * else we would have exited above).
264 */
265 if (parmp->serverStr != NULL)
266 {
267 char_u *p;
268
269 server_to_input_buf(serverConvert(parmp->serverStrEnc,
270 parmp->serverStr, &p));
271 vim_free(p);
272 }
273 }
274
275 static void
276 cmdsrv_main(
277 int *argc,
278 char **argv,
279 char_u *serverName_arg,
280 char_u **serverStr)
281 {
282 char_u *res;
283 int i;
284 char_u *sname;
285 int ret;
286 int didone = FALSE;
287 int exiterr = 0;
288 char **newArgV = argv + 1;
289 int newArgC = 1,
290 Argc = *argc;
291 int argtype;
292 #define ARGTYPE_OTHER 0
293 #define ARGTYPE_EDIT 1
294 #define ARGTYPE_EDIT_WAIT 2
295 #define ARGTYPE_SEND 3
296 int silent = FALSE;
297 int tabs = FALSE;
298 # ifndef FEAT_X11
299 HWND srv;
300 # else
301 Window srv;
302
303 setup_term_clip();
304 # endif
305
306 sname = serverMakeName(serverName_arg, argv[0]);
307 if (sname == NULL)
308 return;
309
310 /*
311 * Execute the command server related arguments and remove them
312 * from the argc/argv array; We may have to return into main()
313 */
314 for (i = 1; i < Argc; i++)
315 {
316 res = NULL;
317 if (STRCMP(argv[i], "--") == 0) // end of option arguments
318 {
319 for (; i < *argc; i++)
320 {
321 *newArgV++ = argv[i];
322 newArgC++;
323 }
324 break;
325 }
326
327 if (STRICMP(argv[i], "--remote-send") == 0)
328 argtype = ARGTYPE_SEND;
329 else if (STRNICMP(argv[i], "--remote", 8) == 0)
330 {
331 char *p = argv[i] + 8;
332
333 argtype = ARGTYPE_EDIT;
334 while (*p != NUL)
335 {
336 if (STRNICMP(p, "-wait", 5) == 0)
337 {
338 argtype = ARGTYPE_EDIT_WAIT;
339 p += 5;
340 }
341 else if (STRNICMP(p, "-silent", 7) == 0)
342 {
343 silent = TRUE;
344 p += 7;
345 }
346 else if (STRNICMP(p, "-tab", 4) == 0)
347 {
348 tabs = TRUE;
349 p += 4;
350 }
351 else
352 {
353 argtype = ARGTYPE_OTHER;
354 break;
355 }
356 }
357 }
358 else
359 argtype = ARGTYPE_OTHER;
360
361 if (argtype != ARGTYPE_OTHER)
362 {
363 if (i == *argc - 1)
364 mainerr_arg_missing((char_u *)argv[i]);
365 if (argtype == ARGTYPE_SEND)
366 {
367 *serverStr = (char_u *)argv[i + 1];
368 i++;
369 }
370 else
371 {
372 *serverStr = build_drop_cmd(*argc - i - 1, argv + i + 1,
373 tabs, argtype == ARGTYPE_EDIT_WAIT);
374 if (*serverStr == NULL)
375 {
376 // Probably out of memory, exit.
377 didone = TRUE;
378 exiterr = 1;
379 break;
380 }
381 Argc = i;
382 }
383 # ifdef FEAT_X11
384 if (xterm_dpy == NULL)
385 {
386 mch_errmsg(_("No display"));
387 ret = -1;
388 }
389 else
390 ret = serverSendToVim(xterm_dpy, sname, *serverStr,
391 NULL, &srv, 0, 0, 0, silent);
392 # else
393 // Win32 always works?
394 ret = serverSendToVim(sname, *serverStr, NULL, &srv, 0, 0, silent);
395 # endif
396 if (ret < 0)
397 {
398 if (argtype == ARGTYPE_SEND)
399 {
400 // Failed to send, abort.
401 mch_errmsg(_(": Send failed.\n"));
402 didone = TRUE;
403 exiterr = 1;
404 }
405 else if (!silent)
406 // Let vim start normally.
407 mch_errmsg(_(": Send failed. Trying to execute locally\n"));
408 break;
409 }
410
411 # ifdef FEAT_GUI_MSWIN
412 // Guess that when the server name starts with "g" it's a GUI
413 // server, which we can bring to the foreground here.
414 // Foreground() in the server doesn't work very well.
415 if (argtype != ARGTYPE_SEND && TOUPPER_ASC(*sname) == 'G')
416 SetForegroundWindow(srv);
417 # endif
418
419 /*
420 * For --remote-wait: Wait until the server did edit each
421 * file. Also detect that the server no longer runs.
422 */
423 if (ret >= 0 && argtype == ARGTYPE_EDIT_WAIT)
424 {
425 int numFiles = *argc - i - 1;
426 int j;
427 char_u *done = alloc(numFiles);
428 char_u *p;
429 # ifdef FEAT_GUI_MSWIN
430 NOTIFYICONDATA ni;
431 int count = 0;
432 extern HWND message_window;
433 # endif
434
435 if (numFiles > 0 && argv[i + 1][0] == '+')
436 // Skip "+cmd" argument, don't wait for it to be edited.
437 --numFiles;
438
439 # ifdef FEAT_GUI_MSWIN
440 ni.cbSize = sizeof(ni);
441 ni.hWnd = message_window;
442 ni.uID = 0;
443 ni.uFlags = NIF_ICON|NIF_TIP;
444 ni.hIcon = LoadIcon((HINSTANCE)GetModuleHandle(0), "IDR_VIM");
445 sprintf(ni.szTip, _("%d of %d edited"), count, numFiles);
446 Shell_NotifyIcon(NIM_ADD, &ni);
447 # endif
448
449 // Wait for all files to unload in remote
450 vim_memset(done, 0, numFiles);
451 while (memchr(done, 0, numFiles) != NULL)
452 {
453 # ifdef MSWIN
454 p = serverGetReply(srv, NULL, TRUE, TRUE, 0);
455 if (p == NULL)
456 break;
457 # else
458 if (serverReadReply(xterm_dpy, srv, &p, TRUE, -1) < 0)
459 break;
460 # endif
461 j = atoi((char *)p);
462 if (j >= 0 && j < numFiles)
463 {
464 # ifdef FEAT_GUI_MSWIN
465 ++count;
466 sprintf(ni.szTip, _("%d of %d edited"),
467 count, numFiles);
468 Shell_NotifyIcon(NIM_MODIFY, &ni);
469 # endif
470 done[j] = 1;
471 }
472 }
473 # ifdef FEAT_GUI_MSWIN
474 Shell_NotifyIcon(NIM_DELETE, &ni);
475 # endif
476 }
477 }
478 else if (STRICMP(argv[i], "--remote-expr") == 0)
479 {
480 if (i == *argc - 1)
481 mainerr_arg_missing((char_u *)argv[i]);
482 # ifdef MSWIN
483 // Win32 always works?
484 if (serverSendToVim(sname, (char_u *)argv[i + 1],
485 &res, NULL, 1, 0, FALSE) < 0)
486 # else
487 if (xterm_dpy == NULL)
488 mch_errmsg(_("No display: Send expression failed.\n"));
489 else if (serverSendToVim(xterm_dpy, sname, (char_u *)argv[i + 1],
490 &res, NULL, 1, 0, 1, FALSE) < 0)
491 # endif
492 {
493 if (res != NULL && *res != NUL)
494 {
495 // Output error from remote
496 mch_errmsg((char *)res);
497 VIM_CLEAR(res);
498 }
499 mch_errmsg(_(": Send expression failed.\n"));
500 }
501 }
502 else if (STRICMP(argv[i], "--serverlist") == 0)
503 {
504 # ifdef MSWIN
505 // Win32 always works?
506 res = serverGetVimNames();
507 # else
508 if (xterm_dpy != NULL)
509 res = serverGetVimNames(xterm_dpy);
510 # endif
511 if (did_emsg)
512 mch_errmsg("\n");
513 }
514 else if (STRICMP(argv[i], "--servername") == 0)
515 {
516 // Already processed. Take it out of the command line
517 i++;
518 continue;
519 }
520 else
521 {
522 *newArgV++ = argv[i];
523 newArgC++;
524 continue;
525 }
526 didone = TRUE;
527 if (res != NULL && *res != NUL)
528 {
529 mch_msg((char *)res);
530 if (res[STRLEN(res) - 1] != '\n')
531 mch_msg("\n");
532 }
533 vim_free(res);
534 }
535
536 if (didone)
537 {
538 display_errors(); // display any collected messages
539 exit(exiterr); // Mission accomplished - get out
540 }
541
542 // Return back into main()
543 *argc = newArgC;
544 vim_free(sname);
545 }
546
547 /*
548 * Build a ":drop" command to send to a Vim server.
549 */
550 static char_u *
551 build_drop_cmd(
552 int filec,
553 char **filev,
554 int tabs, // Use ":tab drop" instead of ":drop".
555 int sendReply)
556 {
557 garray_T ga;
558 int i;
559 char_u *inicmd = NULL;
560 char_u *p;
561 char_u *cdp;
562 char_u *cwd;
563
564 if (filec > 0 && filev[0][0] == '+')
565 {
566 inicmd = (char_u *)filev[0] + 1;
567 filev++;
568 filec--;
569 }
570 // Check if we have at least one argument.
571 if (filec <= 0)
572 mainerr_arg_missing((char_u *)filev[-1]);
573
574 // Temporarily cd to the current directory to handle relative file names.
575 cwd = alloc(MAXPATHL);
576 if (cwd == NULL)
577 return NULL;
578 if (mch_dirname(cwd, MAXPATHL) != OK)
579 {
580 vim_free(cwd);
581 return NULL;
582 }
583 cdp = vim_strsave_escaped_ext(cwd,
584 #ifdef BACKSLASH_IN_FILENAME
585 (char_u *)"", // rem_backslash() will tell what chars to escape
586 #else
587 PATH_ESC_CHARS,
588 #endif
589 '\\', TRUE);
590 vim_free(cwd);
591 if (cdp == NULL)
592 return NULL;
593 ga_init2(&ga, 1, 100);
594 ga_concat(&ga, (char_u *)"<C-\\><C-N>:cd ");
595 ga_concat(&ga, cdp);
596
597 // Call inputsave() so that a prompt for an encryption key works.
598 ga_concat(&ga, (char_u *)"<CR>:if exists('*inputsave')|call inputsave()|endif|");
599 if (tabs)
600 ga_concat(&ga, (char_u *)"tab ");
601 ga_concat(&ga, (char_u *)"drop");
602 for (i = 0; i < filec; i++)
603 {
604 // On Unix the shell has already expanded the wildcards, don't want to
605 // do it again in the Vim server. On MS-Windows only escape
606 // non-wildcard characters.
607 p = vim_strsave_escaped((char_u *)filev[i],
608 #ifdef UNIX
609 PATH_ESC_CHARS
610 #else
611 (char_u *)" \t%#"
612 #endif
613 );
614 if (p == NULL)
615 {
616 vim_free(ga.ga_data);
617 return NULL;
618 }
619 ga_concat(&ga, (char_u *)" ");
620 ga_concat(&ga, p);
621 vim_free(p);
622 }
623 ga_concat(&ga, (char_u *)"|if exists('*inputrestore')|call inputrestore()|endif<CR>");
624
625 // The :drop commands goes to Insert mode when 'insertmode' is set, use
626 // CTRL-\ CTRL-N again.
627 ga_concat(&ga, (char_u *)"<C-\\><C-N>");
628
629 // Switch back to the correct current directory (prior to temporary path
630 // switch) unless 'autochdir' is set, in which case it will already be
631 // correct after the :drop command. With line breaks and spaces:
632 // if !exists('+acd') || !&acd
633 // if haslocaldir()
634 // cd -
635 // lcd -
636 // elseif getcwd() ==# 'current path'
637 // cd -
638 // endif
639 // endif
640 ga_concat(&ga, (char_u *)":if !exists('+acd')||!&acd|if haslocaldir()|");
641 ga_concat(&ga, (char_u *)"cd -|lcd -|elseif getcwd() ==# '");
642 ga_concat(&ga, cdp);
643 ga_concat(&ga, (char_u *)"'|cd -|endif|endif<CR>");
644 vim_free(cdp);
645
646 if (sendReply)
647 ga_concat(&ga, (char_u *)":call SetupRemoteReplies()<CR>");
648 ga_concat(&ga, (char_u *)":");
649 if (inicmd != NULL)
650 {
651 // Can't use <CR> after "inicmd", because an "startinsert" would cause
652 // the following commands to be inserted as text. Use a "|",
653 // hopefully "inicmd" does allow this...
654 ga_concat(&ga, inicmd);
655 ga_concat(&ga, (char_u *)"|");
656 }
657 // Bring the window to the foreground, goto Insert mode when 'im' set and
658 // clear command line.
659 ga_concat(&ga, (char_u *)"cal foreground()|if &im|star|en|redr|f<CR>");
660 ga_append(&ga, NUL);
661 return ga.ga_data;
662 }
663
664 /*
665 * Make our basic server name: use the specified "arg" if given, otherwise use
666 * the tail of the command "cmd" we were started with.
667 * Return the name in allocated memory. This doesn't include a serial number.
668 */
669 static char_u *
670 serverMakeName(char_u *arg, char *cmd)
671 {
672 char_u *p;
673
674 if (arg != NULL && *arg != NUL)
675 p = vim_strsave_up(arg);
676 else
677 {
678 p = vim_strsave_up(gettail((char_u *)cmd));
679 // Remove .exe or .bat from the name.
680 if (p != NULL && vim_strchr(p, '.') != NULL)
681 *vim_strchr(p, '.') = NUL;
682 }
683 return p;
684 }
685 #endif // FEAT_CLIENTSERVER
686
687 #if defined(FEAT_CLIENTSERVER) && defined(FEAT_X11)
688 static void
689 make_connection(void)
690 {
691 if (X_DISPLAY == NULL
692 # ifdef FEAT_GUI
693 && !gui.in_use
694 # endif
695 )
696 {
697 x_force_connect = TRUE;
698 setup_term_clip();
699 x_force_connect = FALSE;
700 }
701 }
702
703 static int
704 check_connection(void)
705 {
706 make_connection();
707 if (X_DISPLAY == NULL)
708 {
709 emsg(_("E240: No connection to the X server"));
710 return FAIL;
711 }
712 return OK;
713 }
714 #endif
715
716 #ifdef FEAT_CLIENTSERVER
717 static void
718 remote_common(typval_T *argvars, typval_T *rettv, int expr)
719 {
720 char_u *server_name;
721 char_u *keys;
722 char_u *r = NULL;
723 char_u buf[NUMBUFLEN];
724 int timeout = 0;
725 # ifdef MSWIN
726 HWND w;
727 # else
728 Window w;
729 # endif
730
731 if (check_restricted() || check_secure())
732 return;
733
734 # ifdef FEAT_X11
735 if (check_connection() == FAIL)
736 return;
737 # endif
738 if (argvars[2].v_type != VAR_UNKNOWN
739 && argvars[3].v_type != VAR_UNKNOWN)
740 timeout = tv_get_number(&argvars[3]);
741
742 server_name = tv_get_string_chk(&argvars[0]);
743 if (server_name == NULL)
744 return; // type error; errmsg already given
745 keys = tv_get_string_buf(&argvars[1], buf);
746 # ifdef MSWIN
747 if (serverSendToVim(server_name, keys, &r, &w, expr, timeout, TRUE) < 0)
748 # else
749 if (serverSendToVim(X_DISPLAY, server_name, keys, &r, &w, expr, timeout,
750 0, TRUE) < 0)
751 # endif
752 {
753 if (r != NULL)
754 {
755 emsg((char *)r); // sending worked but evaluation failed
756 vim_free(r);
757 }
758 else
759 semsg(_("E241: Unable to send to %s"), server_name);
760 return;
761 }
762
763 rettv->vval.v_string = r;
764
765 if (argvars[2].v_type != VAR_UNKNOWN)
766 {
767 dictitem_T v;
768 char_u str[30];
769 char_u *idvar;
770
771 idvar = tv_get_string_chk(&argvars[2]);
772 if (idvar != NULL && *idvar != NUL)
773 {
774 sprintf((char *)str, PRINTF_HEX_LONG_U, (long_u)w);
775 v.di_tv.v_type = VAR_STRING;
776 v.di_tv.vval.v_string = vim_strsave(str);
777 set_var(idvar, &v.di_tv, FALSE);
778 vim_free(v.di_tv.vval.v_string);
779 }
780 }
781 }
782 #endif
783
784 #if defined(FEAT_EVAL) || defined(PROTO)
785 /*
786 * "remote_expr()" function
787 */
788 void
789 f_remote_expr(typval_T *argvars UNUSED, typval_T *rettv)
790 {
791 rettv->v_type = VAR_STRING;
792 rettv->vval.v_string = NULL;
793 #ifdef FEAT_CLIENTSERVER
794 remote_common(argvars, rettv, TRUE);
795 #endif
796 }
797
798 /*
799 * "remote_foreground()" function
800 */
801 void
802 f_remote_foreground(typval_T *argvars UNUSED, typval_T *rettv UNUSED)
803 {
804 #ifdef FEAT_CLIENTSERVER
805 # ifdef MSWIN
806 // On Win32 it's done in this application.
807 {
808 char_u *server_name = tv_get_string_chk(&argvars[0]);
809
810 if (server_name != NULL)
811 serverForeground(server_name);
812 }
813 # else
814 // Send a foreground() expression to the server.
815 argvars[1].v_type = VAR_STRING;
816 argvars[1].vval.v_string = vim_strsave((char_u *)"foreground()");
817 argvars[2].v_type = VAR_UNKNOWN;
818 rettv->v_type = VAR_STRING;
819 rettv->vval.v_string = NULL;
820 remote_common(argvars, rettv, TRUE);
821 vim_free(argvars[1].vval.v_string);
822 # endif
823 #endif
824 }
825
826 void
827 f_remote_peek(typval_T *argvars UNUSED, typval_T *rettv)
828 {
829 #ifdef FEAT_CLIENTSERVER
830 dictitem_T v;
831 char_u *s = NULL;
832 # ifdef MSWIN
833 long_u n = 0;
834 # endif
835 char_u *serverid;
836
837 if (check_restricted() || check_secure())
838 {
839 rettv->vval.v_number = -1;
840 return;
841 }
842 serverid = tv_get_string_chk(&argvars[0]);
843 if (serverid == NULL)
844 {
845 rettv->vval.v_number = -1;
846 return; // type error; errmsg already given
847 }
848 # ifdef MSWIN
849 sscanf((const char *)serverid, SCANF_HEX_LONG_U, &n);
850 if (n == 0)
851 rettv->vval.v_number = -1;
852 else
853 {
854 s = serverGetReply((HWND)n, FALSE, FALSE, FALSE, 0);
855 rettv->vval.v_number = (s != NULL);
856 }
857 # else
858 if (check_connection() == FAIL)
859 return;
860
861 rettv->vval.v_number = serverPeekReply(X_DISPLAY,
862 serverStrToWin(serverid), &s);
863 # endif
864
865 if (argvars[1].v_type != VAR_UNKNOWN && rettv->vval.v_number > 0)
866 {
867 char_u *retvar;
868
869 v.di_tv.v_type = VAR_STRING;
870 v.di_tv.vval.v_string = vim_strsave(s);
871 retvar = tv_get_string_chk(&argvars[1]);
872 if (retvar != NULL)
873 set_var(retvar, &v.di_tv, FALSE);
874 vim_free(v.di_tv.vval.v_string);
875 }
876 #else
877 rettv->vval.v_number = -1;
878 #endif
879 }
880
881 void
882 f_remote_read(typval_T *argvars UNUSED, typval_T *rettv)
883 {
884 char_u *r = NULL;
885
886 #ifdef FEAT_CLIENTSERVER
887 char_u *serverid = tv_get_string_chk(&argvars[0]);
888
889 if (serverid != NULL && !check_restricted() && !check_secure())
890 {
891 int timeout = 0;
892 # ifdef MSWIN
893 // The server's HWND is encoded in the 'id' parameter
894 long_u n = 0;
895 # endif
896
897 if (argvars[1].v_type != VAR_UNKNOWN)
898 timeout = tv_get_number(&argvars[1]);
899
900 # ifdef MSWIN
901 sscanf((char *)serverid, SCANF_HEX_LONG_U, &n);
902 if (n != 0)
903 r = serverGetReply((HWND)n, FALSE, TRUE, TRUE, timeout);
904 if (r == NULL)
905 # else
906 if (check_connection() == FAIL
907 || serverReadReply(X_DISPLAY, serverStrToWin(serverid),
908 &r, FALSE, timeout) < 0)
909 # endif
910 emsg(_("E277: Unable to read a server reply"));
911 }
912 #endif
913 rettv->v_type = VAR_STRING;
914 rettv->vval.v_string = r;
915 }
916
917 /*
918 * "remote_send()" function
919 */
920 void
921 f_remote_send(typval_T *argvars UNUSED, typval_T *rettv)
922 {
923 rettv->v_type = VAR_STRING;
924 rettv->vval.v_string = NULL;
925 #ifdef FEAT_CLIENTSERVER
926 remote_common(argvars, rettv, FALSE);
927 #endif
928 }
929
930 /*
931 * "remote_startserver()" function
932 */
933 void
934 f_remote_startserver(typval_T *argvars UNUSED, typval_T *rettv UNUSED)
935 {
936 #ifdef FEAT_CLIENTSERVER
937 char_u *server = tv_get_string_chk(&argvars[0]);
938
939 if (server == NULL)
940 return; // type error; errmsg already given
941 if (serverName != NULL)
942 emsg(_("E941: already started a server"));
943 else
944 {
945 # ifdef FEAT_X11
946 if (check_connection() == OK)
947 serverRegisterName(X_DISPLAY, server);
948 # else
949 serverSetName(server);
950 # endif
951 }
952 #else
953 emsg(_("E942: +clientserver feature not available"));
954 #endif
955 }
956
957 void
958 f_server2client(typval_T *argvars UNUSED, typval_T *rettv)
959 {
960 #ifdef FEAT_CLIENTSERVER
961 char_u buf[NUMBUFLEN];
962 char_u *server = tv_get_string_chk(&argvars[0]);
963 char_u *reply = tv_get_string_buf_chk(&argvars[1], buf);
964
965 rettv->vval.v_number = -1;
966 if (server == NULL || reply == NULL)
967 return;
968 if (check_restricted() || check_secure())
969 return;
970 # ifdef FEAT_X11
971 if (check_connection() == FAIL)
972 return;
973 # endif
974
975 if (serverSendReply(server, reply) < 0)
976 {
977 emsg(_("E258: Unable to send to client"));
978 return;
979 }
980 rettv->vval.v_number = 0;
981 #else
982 rettv->vval.v_number = -1;
983 #endif
984 }
985
986 void
987 f_serverlist(typval_T *argvars UNUSED, typval_T *rettv)
988 {
989 char_u *r = NULL;
990
991 #ifdef FEAT_CLIENTSERVER
992 # ifdef MSWIN
993 r = serverGetVimNames();
994 # else
995 make_connection();
996 if (X_DISPLAY != NULL)
997 r = serverGetVimNames(X_DISPLAY);
998 # endif
999 #endif
1000 rettv->v_type = VAR_STRING;
1001 rettv->vval.v_string = r;
1002 }
1003 #endif