Mercurial > vim
annotate src/if_xcmdsrv.c @ 10744:f49773e0c392
Added tag v8.0.0261 for changeset 8779b4b2e9584fa03f7bb81e78e99d365407ce4f
| author | Christian Brabandt <cb@256bit.org> |
|---|---|
| date | Sun, 29 Jan 2017 16:00:05 +0100 |
| parents | 4aead6a9b7a9 |
| children | e05695e59f6d |
| rev | line source |
|---|---|
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commit https://github.com/vim/vim/commit/edf3f97ae2af024708ebb4ac614227327033ca47
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1 /* vi:set ts=8 sts=4 sw=4 noet: |
| 7 | 2 * |
| 3 * VIM - Vi IMproved by Bram Moolenaar | |
| 4 * X command server by Flemming Madsen | |
| 5 * | |
| 6 * Do ":help uganda" in Vim to read copying and usage conditions. | |
| 7 * Do ":help credits" in Vim to see a list of people who contributed. | |
| 8 * See README.txt for an overview of the Vim source code. | |
| 9 * | |
| 10 * if_xcmdsrv.c: Functions for passing commands through an X11 display. | |
| 11 * | |
| 12 */ | |
| 13 | |
| 14 #include "vim.h" | |
| 15 #include "version.h" | |
| 16 | |
| 17 #if defined(FEAT_CLIENTSERVER) || defined(PROTO) | |
| 18 | |
| 19 # ifdef FEAT_X11 | |
| 20 # include <X11/Intrinsic.h> | |
| 21 # include <X11/Xatom.h> | |
| 22 # endif | |
| 23 | |
| 24 /* | |
| 1121 | 25 * This file provides procedures that implement the command server |
| 26 * functionality of Vim when in contact with an X11 server. | |
| 7 | 27 * |
| 28 * Adapted from TCL/TK's send command in tkSend.c of the tk 3.6 distribution. | |
| 29 * Adapted for use in Vim by Flemming Madsen. Protocol changed to that of tk 4 | |
| 30 */ | |
| 31 | |
| 32 /* | |
| 33 * Copyright (c) 1989-1993 The Regents of the University of California. | |
| 34 * All rights reserved. | |
| 35 * | |
| 36 * Permission is hereby granted, without written agreement and without | |
| 37 * license or royalty fees, to use, copy, modify, and distribute this | |
| 38 * software and its documentation for any purpose, provided that the | |
| 39 * above copyright notice and the following two paragraphs appear in | |
| 40 * all copies of this software. | |
| 41 * | |
| 42 * IN NO EVENT SHALL THE UNIVERSITY OF CALIFORNIA BE LIABLE TO ANY PARTY FOR | |
| 43 * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING OUT | |
| 44 * OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF THE UNIVERSITY OF | |
| 45 * CALIFORNIA HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
| 46 * | |
| 47 * THE UNIVERSITY OF CALIFORNIA SPECIFICALLY DISCLAIMS ANY WARRANTIES, | |
| 48 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY | |
| 49 * AND FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS | |
| 50 * ON AN "AS IS" BASIS, AND THE UNIVERSITY OF CALIFORNIA HAS NO OBLIGATION TO | |
| 51 * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. | |
| 52 */ | |
| 53 | |
| 54 | |
| 55 /* | |
| 56 * When a result is being awaited from a sent command, one of | |
| 57 * the following structures is present on a list of all outstanding | |
| 58 * sent commands. The information in the structure is used to | |
| 59 * process the result when it arrives. You're probably wondering | |
| 60 * how there could ever be multiple outstanding sent commands. | |
| 61 * This could happen if Vim instances invoke each other recursively. | |
| 62 * It's unlikely, but possible. | |
| 63 */ | |
| 64 | |
| 65 typedef struct PendingCommand | |
| 66 { | |
| 67 int serial; /* Serial number expected in result. */ | |
| 68 int code; /* Result Code. 0 is OK */ | |
| 69 char_u *result; /* String result for command (malloc'ed). | |
| 70 * NULL means command still pending. */ | |
| 71 struct PendingCommand *nextPtr; | |
| 72 /* Next in list of all outstanding commands. | |
| 73 * NULL means end of list. */ | |
| 74 } PendingCommand; | |
| 75 | |
| 76 static PendingCommand *pendingCommands = NULL; | |
| 77 /* List of all commands currently | |
| 78 * being waited for. */ | |
| 79 | |
| 80 /* | |
| 81 * The information below is used for communication between processes | |
| 82 * during "send" commands. Each process keeps a private window, never | |
| 83 * even mapped, with one property, "Comm". When a command is sent to | |
| 84 * an interpreter, the command is appended to the comm property of the | |
| 85 * communication window associated with the interp's process. Similarly, | |
| 86 * when a result is returned from a sent command, it is also appended | |
| 87 * to the comm property. | |
| 88 * | |
| 89 * Each command and each result takes the form of ASCII text. For a | |
| 90 * command, the text consists of a nul character followed by several | |
| 39 | 91 * nul-terminated ASCII strings. The first string consists of a |
| 92 * single letter: | |
| 93 * "c" for an expression | |
| 94 * "k" for keystrokes | |
| 95 * "r" for reply | |
| 96 * "n" for notification. | |
| 97 * Subsequent strings have the form "option value" where the following options | |
| 98 * are supported: | |
| 7 | 99 * |
| 100 * -r commWindow serial | |
| 101 * | |
| 102 * This option means that a response should be sent to the window | |
| 103 * whose X identifier is "commWindow" (in hex), and the response should | |
| 104 * be identified with the serial number given by "serial" (in decimal). | |
| 105 * If this option isn't specified then the send is asynchronous and | |
| 106 * no response is sent. | |
| 107 * | |
| 108 * -n name | |
| 109 * "Name" gives the name of the application for which the command is | |
| 110 * intended. This option must be present. | |
| 111 * | |
| 39 | 112 * -E encoding |
| 113 * Encoding name used for the text. This is the 'encoding' of the | |
| 114 * sender. The receiver may want to do conversion to his 'encoding'. | |
| 115 * | |
| 7 | 116 * -s script |
| 117 * "Script" is the script to be executed. This option must be | |
| 118 * present. Taken as a series of keystrokes in a "k" command where | |
| 119 * <Key>'s are expanded | |
| 120 * | |
| 121 * The options may appear in any order. The -n and -s options must be | |
| 122 * present, but -r may be omitted for asynchronous RPCs. For compatibility | |
| 123 * with future releases that may add new features, there may be additional | |
| 124 * options present; as long as they start with a "-" character, they will | |
| 125 * be ignored. | |
| 126 * | |
| 127 * A result also consists of a zero character followed by several null- | |
| 128 * terminated ASCII strings. The first string consists of the single | |
| 129 * letter "r". Subsequent strings have the form "option value" where | |
| 130 * the following options are supported: | |
| 131 * | |
| 132 * -s serial | |
| 133 * Identifies the command for which this is the result. It is the | |
| 134 * same as the "serial" field from the -s option in the command. This | |
| 135 * option must be present. | |
| 136 * | |
| 137 * -r result | |
| 138 * "Result" is the result string for the script, which may be either | |
| 139 * a result or an error message. If this field is omitted then it | |
| 140 * defaults to an empty string. | |
| 141 * | |
| 142 * -c code | |
| 143 * 0: for OK. This is the default. | |
| 144 * 1: for error: Result is the last error | |
| 145 * | |
| 146 * -i errorInfo | |
| 147 * -e errorCode | |
| 148 * Not applicable for Vim | |
| 149 * | |
| 150 * Options may appear in any order, and only the -s option must be | |
| 151 * present. As with commands, there may be additional options besides | |
| 152 * these; unknown options are ignored. | |
| 153 */ | |
| 154 | |
| 155 /* | |
| 156 * Maximum size property that can be read at one time by | |
| 157 * this module: | |
| 158 */ | |
| 159 | |
| 160 #define MAX_PROP_WORDS 100000 | |
| 161 | |
| 162 struct ServerReply | |
| 163 { | |
| 164 Window id; | |
| 165 garray_T strings; | |
| 166 }; | |
| 167 static garray_T serverReply = { 0, 0, 0, 0, 0 }; | |
| 168 enum ServerReplyOp { SROP_Find, SROP_Add, SROP_Delete }; | |
| 169 | |
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170 typedef int (*EndCond)(void *); |
| 7 | 171 |
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172 struct x_cmdqueue |
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173 { |
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174 char_u *propInfo; |
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175 long_u len; |
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176 struct x_cmdqueue *next; |
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177 struct x_cmdqueue *prev; |
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178 }; |
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179 |
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180 typedef struct x_cmdqueue x_queue_T; |
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181 |
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182 /* dummy node, header for circular queue */ |
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183 static x_queue_T head = {NULL, 0, NULL, NULL}; |
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184 |
| 7 | 185 /* |
| 186 * Forward declarations for procedures defined later in this file: | |
| 187 */ | |
| 188 | |
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189 static Window LookupName(Display *dpy, char_u *name, int delete, char_u **loose); |
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190 static int SendInit(Display *dpy); |
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191 static int DoRegisterName(Display *dpy, char_u *name); |
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192 static void DeleteAnyLingerer(Display *dpy, Window w); |
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193 static int GetRegProp(Display *dpy, char_u **regPropp, long_u *numItemsp, int domsg); |
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194 static int WaitForPend(void *p); |
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195 static int WaitForReply(void *p); |
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196 static int WindowValid(Display *dpy, Window w); |
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197 static void ServerWait(Display *dpy, Window w, EndCond endCond, void *endData, int localLoop, int seconds); |
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198 static struct ServerReply *ServerReplyFind(Window w, enum ServerReplyOp op); |
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199 static int AppendPropCarefully(Display *display, Window window, Atom property, char_u *value, int length); |
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200 static int x_error_check(Display *dpy, XErrorEvent *error_event); |
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201 static int IsSerialName(char_u *name); |
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202 static void save_in_queue(char_u *buf, long_u len); |
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203 static void server_parse_message(Display *dpy, char_u *propInfo, long_u numItems); |
| 7 | 204 |
| 205 /* Private variables for the "server" functionality */ | |
| 206 static Atom registryProperty = None; | |
| 207 static Atom vimProperty = None; | |
| 208 static int got_x_error = FALSE; | |
| 209 | |
| 210 static char_u *empty_prop = (char_u *)""; /* empty GetRegProp() result */ | |
| 211 | |
| 212 /* | |
| 213 * Associate an ASCII name with Vim. Try real hard to get a unique one. | |
| 214 * Returns FAIL or OK. | |
| 215 */ | |
| 216 int | |
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217 serverRegisterName( |
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218 Display *dpy, /* display to register with */ |
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219 char_u *name) /* the name that will be used as a base */ |
| 7 | 220 { |
| 221 int i; | |
| 222 int res; | |
| 223 char_u *p = NULL; | |
| 224 | |
| 225 res = DoRegisterName(dpy, name); | |
| 226 if (res < 0) | |
| 227 { | |
| 228 i = 1; | |
| 229 do | |
| 230 { | |
| 231 if (res < -1 || i >= 1000) | |
| 232 { | |
| 233 MSG_ATTR(_("Unable to register a command server name"), | |
| 234 hl_attr(HLF_W)); | |
| 235 return FAIL; | |
| 236 } | |
| 237 if (p == NULL) | |
| 238 p = alloc(STRLEN(name) + 10); | |
| 239 if (p == NULL) | |
| 240 { | |
| 241 res = -10; | |
| 242 continue; | |
| 243 } | |
| 244 sprintf((char *)p, "%s%d", name, i++); | |
| 245 res = DoRegisterName(dpy, p); | |
| 246 } | |
| 247 while (res < 0) | |
| 248 ; | |
| 249 vim_free(p); | |
| 250 } | |
| 251 return OK; | |
| 252 } | |
| 253 | |
| 254 static int | |
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255 DoRegisterName(Display *dpy, char_u *name) |
| 7 | 256 { |
| 257 Window w; | |
| 258 XErrorHandler old_handler; | |
| 259 #define MAX_NAME_LENGTH 100 | |
| 260 char_u propInfo[MAX_NAME_LENGTH + 20]; | |
| 261 | |
| 262 if (commProperty == None) | |
| 263 { | |
| 264 if (SendInit(dpy) < 0) | |
| 265 return -2; | |
| 266 } | |
| 267 | |
| 268 /* | |
| 269 * Make sure the name is unique, and append info about it to | |
| 270 * the registry property. It's important to lock the server | |
| 271 * here to prevent conflicting changes to the registry property. | |
| 272 * WARNING: Do not step through this while debugging, it will hangup the X | |
| 273 * server! | |
| 274 */ | |
| 275 XGrabServer(dpy); | |
| 276 w = LookupName(dpy, name, FALSE, NULL); | |
| 277 if (w != (Window)0) | |
| 278 { | |
| 279 Status status; | |
| 280 int dummyInt; | |
| 281 unsigned int dummyUns; | |
| 282 Window dummyWin; | |
| 283 | |
| 284 /* | |
| 285 * The name is currently registered. See if the commWindow | |
| 286 * associated with the name exists. If not, or if the commWindow | |
| 287 * is *our* commWindow, then just unregister the old name (this | |
| 288 * could happen if an application dies without cleaning up the | |
| 289 * registry). | |
| 290 */ | |
| 291 old_handler = XSetErrorHandler(x_error_check); | |
| 292 status = XGetGeometry(dpy, w, &dummyWin, &dummyInt, &dummyInt, | |
| 293 &dummyUns, &dummyUns, &dummyUns, &dummyUns); | |
| 294 (void)XSetErrorHandler(old_handler); | |
| 295 if (status != Success && w != commWindow) | |
| 296 { | |
| 297 XUngrabServer(dpy); | |
| 298 XFlush(dpy); | |
| 299 return -1; | |
| 300 } | |
| 301 (void)LookupName(dpy, name, /*delete=*/TRUE, NULL); | |
| 302 } | |
| 303 sprintf((char *)propInfo, "%x %.*s", (int_u)commWindow, | |
| 304 MAX_NAME_LENGTH, name); | |
| 305 old_handler = XSetErrorHandler(x_error_check); | |
| 306 got_x_error = FALSE; | |
| 307 XChangeProperty(dpy, RootWindow(dpy, 0), registryProperty, XA_STRING, 8, | |
| 308 PropModeAppend, propInfo, STRLEN(propInfo) + 1); | |
| 309 XUngrabServer(dpy); | |
| 310 XSync(dpy, False); | |
| 311 (void)XSetErrorHandler(old_handler); | |
| 312 | |
| 313 if (!got_x_error) | |
| 314 { | |
| 315 #ifdef FEAT_EVAL | |
| 316 set_vim_var_string(VV_SEND_SERVER, name, -1); | |
| 317 #endif | |
| 318 serverName = vim_strsave(name); | |
| 319 #ifdef FEAT_TITLE | |
| 320 need_maketitle = TRUE; | |
| 321 #endif | |
| 322 return 0; | |
| 323 } | |
| 324 return -2; | |
| 325 } | |
| 326 | |
| 327 #if defined(FEAT_GUI) || defined(PROTO) | |
| 328 /* | |
| 329 * Clean out new ID from registry and set it as comm win. | |
| 330 * Change any registered window ID. | |
| 331 */ | |
| 332 void | |
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333 serverChangeRegisteredWindow( |
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334 Display *dpy, /* Display to register with */ |
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335 Window newwin) /* Re-register to this ID */ |
| 7 | 336 { |
| 337 char_u propInfo[MAX_NAME_LENGTH + 20]; | |
| 338 | |
| 339 commWindow = newwin; | |
| 340 | |
| 341 /* Always call SendInit() here, to make sure commWindow is marked as a Vim | |
| 342 * window. */ | |
| 343 if (SendInit(dpy) < 0) | |
| 344 return; | |
| 345 | |
| 346 /* WARNING: Do not step through this while debugging, it will hangup the X | |
| 347 * server! */ | |
| 348 XGrabServer(dpy); | |
| 349 DeleteAnyLingerer(dpy, newwin); | |
| 350 if (serverName != NULL) | |
| 351 { | |
| 352 /* Reinsert name if we was already registered */ | |
| 353 (void)LookupName(dpy, serverName, /*delete=*/TRUE, NULL); | |
| 354 sprintf((char *)propInfo, "%x %.*s", | |
| 355 (int_u)newwin, MAX_NAME_LENGTH, serverName); | |
| 356 XChangeProperty(dpy, RootWindow(dpy, 0), registryProperty, XA_STRING, 8, | |
| 357 PropModeAppend, (char_u *)propInfo, | |
| 358 STRLEN(propInfo) + 1); | |
| 359 } | |
| 360 XUngrabServer(dpy); | |
| 361 } | |
| 362 #endif | |
| 363 | |
| 364 /* | |
| 365 * Send to an instance of Vim via the X display. | |
| 366 * Returns 0 for OK, negative for an error. | |
| 367 */ | |
| 368 int | |
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369 serverSendToVim( |
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370 Display *dpy, /* Where to send. */ |
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371 char_u *name, /* Where to send. */ |
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372 char_u *cmd, /* What to send. */ |
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373 char_u **result, /* Result of eval'ed expression */ |
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374 Window *server, /* Actual ID of receiving app */ |
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375 Bool asExpr, /* Interpret as keystrokes or expr ? */ |
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376 Bool localLoop, /* Throw away everything but result */ |
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377 int silent) /* don't complain about no server */ |
| 7 | 378 { |
| 379 Window w; | |
| 380 char_u *property; | |
| 381 int length; | |
| 382 int res; | |
| 383 static int serial = 0; /* Running count of sent commands. | |
| 384 * Used to give each command a | |
| 385 * different serial number. */ | |
| 386 PendingCommand pending; | |
| 387 char_u *loosename = NULL; | |
| 388 | |
| 389 if (result != NULL) | |
| 390 *result = NULL; | |
| 391 if (name == NULL || *name == NUL) | |
| 392 name = (char_u *)"GVIM"; /* use a default name */ | |
| 393 | |
| 394 if (commProperty == None && dpy != NULL) | |
| 395 { | |
| 396 if (SendInit(dpy) < 0) | |
| 397 return -1; | |
| 398 } | |
| 399 | |
| 400 /* Execute locally if no display or target is ourselves */ | |
| 401 if (dpy == NULL || (serverName != NULL && STRICMP(name, serverName) == 0)) | |
| 402 { | |
| 403 if (asExpr) | |
| 404 { | |
| 405 char_u *ret; | |
| 406 | |
| 407 ret = eval_client_expr_to_string(cmd); | |
| 408 if (result != NULL) | |
| 409 { | |
| 410 if (ret == NULL) | |
| 411 *result = vim_strsave((char_u *)_(e_invexprmsg)); | |
| 412 else | |
| 413 *result = ret; | |
| 414 } | |
| 415 else | |
| 416 vim_free(ret); | |
| 417 return ret == NULL ? -1 : 0; | |
| 418 } | |
| 419 else | |
| 420 server_to_input_buf(cmd); | |
| 421 return 0; | |
| 422 } | |
| 423 | |
| 424 /* | |
| 425 * Bind the server name to a communication window. | |
| 426 * | |
| 427 * Find any survivor with a serialno attached to the name if the | |
| 428 * original registrant of the wanted name is no longer present. | |
| 429 * | |
| 430 * Delete any lingering names from dead editors. | |
| 431 */ | |
| 432 while (TRUE) | |
| 433 { | |
| 434 w = LookupName(dpy, name, FALSE, &loosename); | |
| 435 /* Check that the window is hot */ | |
| 436 if (w != None) | |
| 437 { | |
| 438 if (!WindowValid(dpy, w)) | |
| 439 { | |
| 440 LookupName(dpy, loosename ? loosename : name, | |
| 441 /*DELETE=*/TRUE, NULL); | |
| 442 continue; | |
| 443 } | |
| 444 } | |
| 445 break; | |
| 446 } | |
| 447 if (w == None) | |
| 448 { | |
| 449 if (!silent) | |
| 450 EMSG2(_(e_noserver), name); | |
| 451 return -1; | |
| 452 } | |
| 453 else if (loosename != NULL) | |
| 454 name = loosename; | |
| 455 if (server != NULL) | |
| 456 *server = w; | |
| 457 | |
| 458 /* | |
| 459 * Send the command to target interpreter by appending it to the | |
| 460 * comm window in the communication window. | |
| 500 | 461 * Length must be computed exactly! |
| 7 | 462 */ |
| 39 | 463 #ifdef FEAT_MBYTE |
| 500 | 464 length = STRLEN(name) + STRLEN(p_enc) + STRLEN(cmd) + 14; |
| 465 #else | |
| 466 length = STRLEN(name) + STRLEN(cmd) + 10; | |
| 39 | 467 #endif |
| 468 property = (char_u *)alloc((unsigned)length + 30); | |
| 7 | 469 |
| 39 | 470 #ifdef FEAT_MBYTE |
| 471 sprintf((char *)property, "%c%c%c-n %s%c-E %s%c-s %s", | |
| 472 0, asExpr ? 'c' : 'k', 0, name, 0, p_enc, 0, cmd); | |
| 473 #else | |
| 7 | 474 sprintf((char *)property, "%c%c%c-n %s%c-s %s", |
| 475 0, asExpr ? 'c' : 'k', 0, name, 0, cmd); | |
| 39 | 476 #endif |
| 7 | 477 if (name == loosename) |
| 478 vim_free(loosename); | |
| 479 /* Add a back reference to our comm window */ | |
| 480 serial++; | |
| 481 sprintf((char *)property + length, "%c-r %x %d", | |
| 482 0, (int_u)commWindow, serial); | |
| 500 | 483 /* Add length of what "-r %x %d" resulted in, skipping the NUL. */ |
| 7 | 484 length += STRLEN(property + length + 1) + 1; |
| 485 | |
| 486 res = AppendPropCarefully(dpy, w, commProperty, property, length + 1); | |
| 487 vim_free(property); | |
| 488 if (res < 0) | |
| 489 { | |
| 490 EMSG(_("E248: Failed to send command to the destination program")); | |
| 491 return -1; | |
| 492 } | |
| 493 | |
| 494 if (!asExpr) /* There is no answer for this - Keys are sent async */ | |
| 495 return 0; | |
| 496 | |
| 497 /* | |
| 498 * Register the fact that we're waiting for a command to | |
| 499 * complete (this is needed by SendEventProc and by | |
| 500 * AppendErrorProc to pass back the command's results). | |
| 501 */ | |
| 502 pending.serial = serial; | |
| 503 pending.code = 0; | |
| 504 pending.result = NULL; | |
| 505 pending.nextPtr = pendingCommands; | |
| 506 pendingCommands = &pending; | |
| 507 | |
| 508 ServerWait(dpy, w, WaitForPend, &pending, localLoop, 600); | |
| 509 | |
| 510 /* | |
| 511 * Unregister the information about the pending command | |
| 512 * and return the result. | |
| 513 */ | |
| 514 if (pendingCommands == &pending) | |
| 515 pendingCommands = pending.nextPtr; | |
| 516 else | |
| 517 { | |
| 518 PendingCommand *pcPtr; | |
| 519 | |
| 520 for (pcPtr = pendingCommands; pcPtr != NULL; pcPtr = pcPtr->nextPtr) | |
| 521 if (pcPtr->nextPtr == &pending) | |
| 522 { | |
| 523 pcPtr->nextPtr = pending.nextPtr; | |
| 524 break; | |
| 525 } | |
| 526 } | |
| 527 if (result != NULL) | |
| 528 *result = pending.result; | |
| 529 else | |
| 530 vim_free(pending.result); | |
| 531 | |
| 532 return pending.code == 0 ? 0 : -1; | |
| 533 } | |
| 534 | |
| 535 static int | |
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536 WaitForPend(void *p) |
| 7 | 537 { |
| 538 PendingCommand *pending = (PendingCommand *) p; | |
| 539 return pending->result != NULL; | |
| 540 } | |
| 541 | |
| 542 /* | |
| 543 * Return TRUE if window "w" exists and has a "Vim" property on it. | |
| 544 */ | |
| 545 static int | |
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546 WindowValid(Display *dpy, Window w) |
| 7 | 547 { |
| 548 XErrorHandler old_handler; | |
| 549 Atom *plist; | |
| 550 int numProp; | |
| 551 int i; | |
| 552 | |
| 553 old_handler = XSetErrorHandler(x_error_check); | |
| 554 got_x_error = 0; | |
| 555 plist = XListProperties(dpy, w, &numProp); | |
| 556 XSync(dpy, False); | |
| 557 XSetErrorHandler(old_handler); | |
| 558 if (plist == NULL || got_x_error) | |
| 559 return FALSE; | |
| 560 | |
| 561 for (i = 0; i < numProp; i++) | |
| 562 if (plist[i] == vimProperty) | |
| 563 { | |
| 564 XFree(plist); | |
| 565 return TRUE; | |
| 566 } | |
| 567 XFree(plist); | |
| 568 return FALSE; | |
| 569 } | |
| 570 | |
| 571 /* | |
| 572 * Enter a loop processing X events & polling chars until we see a result | |
| 573 */ | |
| 574 static void | |
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575 ServerWait( |
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576 Display *dpy, |
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577 Window w, |
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578 EndCond endCond, |
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579 void *endData, |
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580 int localLoop, |
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581 int seconds) |
| 7 | 582 { |
| 583 time_t start; | |
| 584 time_t now; | |
| 585 XEvent event; | |
| 3670 | 586 |
| 587 #define UI_MSEC_DELAY 50 | |
| 588 #define SEND_MSEC_POLL 500 | |
| 589 #ifndef HAVE_SELECT | |
| 590 struct pollfd fds; | |
| 591 | |
| 592 fds.fd = ConnectionNumber(dpy); | |
| 593 fds.events = POLLIN; | |
| 594 #else | |
| 595 fd_set fds; | |
| 596 struct timeval tv; | |
| 597 | |
| 598 tv.tv_sec = 0; | |
| 599 tv.tv_usec = SEND_MSEC_POLL * 1000; | |
| 600 FD_ZERO(&fds); | |
| 601 FD_SET(ConnectionNumber(dpy), &fds); | |
| 602 #endif | |
| 7 | 603 |
| 604 time(&start); | |
| 3670 | 605 while (TRUE) |
| 7 | 606 { |
| 3670 | 607 while (XCheckWindowEvent(dpy, commWindow, PropertyChangeMask, &event)) |
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608 serverEventProc(dpy, &event, 1); |
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609 server_parse_messages(); |
| 3670 | 610 |
| 611 if (endCond(endData) != 0) | |
| 612 break; | |
| 613 if (!WindowValid(dpy, w)) | |
| 614 break; | |
| 7 | 615 time(&now); |
| 616 if (seconds >= 0 && (now - start) >= seconds) | |
| 617 break; | |
| 3670 | 618 |
| 619 /* Just look out for the answer without calling back into Vim */ | |
| 7 | 620 if (localLoop) |
| 621 { | |
| 622 #ifndef HAVE_SELECT | |
| 623 if (poll(&fds, 1, SEND_MSEC_POLL) < 0) | |
| 624 break; | |
| 625 #else | |
| 3670 | 626 if (select(FD_SETSIZE, &fds, NULL, NULL, &tv) < 0) |
| 7 | 627 break; |
| 628 #endif | |
| 629 } | |
| 630 else | |
| 631 { | |
| 632 if (got_int) | |
| 633 break; | |
| 3670 | 634 ui_delay((long)UI_MSEC_DELAY, TRUE); |
| 7 | 635 ui_breakcheck(); |
| 636 } | |
| 637 } | |
| 638 } | |
| 639 | |
| 640 | |
| 641 /* | |
| 642 * Fetch a list of all the Vim instance names currently registered for the | |
| 643 * display. | |
| 644 * | |
| 645 * Returns a newline separated list in allocated memory or NULL. | |
| 646 */ | |
| 647 char_u * | |
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648 serverGetVimNames(Display *dpy) |
| 7 | 649 { |
| 650 char_u *regProp; | |
| 651 char_u *entry; | |
| 652 char_u *p; | |
| 653 long_u numItems; | |
| 654 int_u w; | |
| 655 garray_T ga; | |
| 656 | |
| 657 if (registryProperty == None) | |
| 658 { | |
| 659 if (SendInit(dpy) < 0) | |
| 660 return NULL; | |
| 661 } | |
| 662 | |
| 663 /* | |
| 664 * Read the registry property. | |
| 665 */ | |
| 666 if (GetRegProp(dpy, ®Prop, &numItems, TRUE) == FAIL) | |
| 667 return NULL; | |
| 668 | |
| 669 /* | |
| 670 * Scan all of the names out of the property. | |
| 671 */ | |
| 672 ga_init2(&ga, 1, 100); | |
| 1880 | 673 for (p = regProp; (long_u)(p - regProp) < numItems; p++) |
| 7 | 674 { |
| 675 entry = p; | |
| 676 while (*p != 0 && !isspace(*p)) | |
| 677 p++; | |
| 678 if (*p != 0) | |
| 679 { | |
| 680 w = None; | |
| 681 sscanf((char *)entry, "%x", &w); | |
| 682 if (WindowValid(dpy, (Window)w)) | |
| 683 { | |
| 684 ga_concat(&ga, p + 1); | |
| 685 ga_concat(&ga, (char_u *)"\n"); | |
| 686 } | |
| 687 while (*p != 0) | |
| 688 p++; | |
| 689 } | |
| 690 } | |
| 691 if (regProp != empty_prop) | |
| 692 XFree(regProp); | |
| 21 | 693 ga_append(&ga, NUL); |
| 7 | 694 return ga.ga_data; |
| 695 } | |
| 696 | |
| 697 /* ---------------------------------------------------------- | |
| 698 * Reply stuff | |
| 699 */ | |
| 700 | |
| 701 static struct ServerReply * | |
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702 ServerReplyFind(Window w, enum ServerReplyOp op) |
| 7 | 703 { |
| 704 struct ServerReply *p; | |
| 705 struct ServerReply e; | |
| 706 int i; | |
| 707 | |
| 708 p = (struct ServerReply *) serverReply.ga_data; | |
| 709 for (i = 0; i < serverReply.ga_len; i++, p++) | |
| 710 if (p->id == w) | |
| 711 break; | |
| 712 if (i >= serverReply.ga_len) | |
| 713 p = NULL; | |
| 714 | |
| 715 if (p == NULL && op == SROP_Add) | |
| 716 { | |
| 717 if (serverReply.ga_growsize == 0) | |
| 718 ga_init2(&serverReply, sizeof(struct ServerReply), 1); | |
| 719 if (ga_grow(&serverReply, 1) == OK) | |
| 720 { | |
| 721 p = ((struct ServerReply *) serverReply.ga_data) | |
| 722 + serverReply.ga_len; | |
| 723 e.id = w; | |
| 724 ga_init2(&e.strings, 1, 100); | |
| 1740 | 725 mch_memmove(p, &e, sizeof(e)); |
| 7 | 726 serverReply.ga_len++; |
| 727 } | |
| 728 } | |
| 729 else if (p != NULL && op == SROP_Delete) | |
| 730 { | |
| 731 ga_clear(&p->strings); | |
| 732 mch_memmove(p, p + 1, (serverReply.ga_len - i - 1) * sizeof(*p)); | |
| 733 serverReply.ga_len--; | |
| 734 } | |
| 735 | |
| 736 return p; | |
| 737 } | |
| 738 | |
| 739 /* | |
| 740 * Convert string to windowid. | |
| 741 * Issue an error if the id is invalid. | |
| 742 */ | |
| 743 Window | |
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744 serverStrToWin(char_u *str) |
| 7 | 745 { |
| 746 unsigned id = None; | |
| 747 | |
| 748 sscanf((char *)str, "0x%x", &id); | |
| 749 if (id == None) | |
| 750 EMSG2(_("E573: Invalid server id used: %s"), str); | |
| 751 | |
| 752 return (Window)id; | |
| 753 } | |
| 754 | |
| 755 /* | |
| 39 | 756 * Send a reply string (notification) to client with id "name". |
| 7 | 757 * Return -1 if the window is invalid. |
| 758 */ | |
| 759 int | |
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760 serverSendReply(char_u *name, char_u *str) |
| 7 | 761 { |
| 762 char_u *property; | |
| 763 int length; | |
| 764 int res; | |
| 765 Display *dpy = X_DISPLAY; | |
| 766 Window win = serverStrToWin(name); | |
| 767 | |
| 768 if (commProperty == None) | |
| 769 { | |
| 770 if (SendInit(dpy) < 0) | |
| 771 return -2; | |
| 772 } | |
| 773 if (!WindowValid(dpy, win)) | |
| 774 return -1; | |
| 775 | |
| 39 | 776 #ifdef FEAT_MBYTE |
| 500 | 777 length = STRLEN(p_enc) + STRLEN(str) + 14; |
| 778 #else | |
| 779 length = STRLEN(str) + 10; | |
| 39 | 780 #endif |
| 781 if ((property = (char_u *)alloc((unsigned)length + 30)) != NULL) | |
| 7 | 782 { |
| 39 | 783 #ifdef FEAT_MBYTE |
| 784 sprintf((char *)property, "%cn%c-E %s%c-n %s%c-w %x", | |
| 785 0, 0, p_enc, 0, str, 0, (unsigned int)commWindow); | |
| 786 #else | |
| 787 sprintf((char *)property, "%cn%c-n %s%c-w %x", | |
| 788 0, 0, str, 0, (unsigned int)commWindow); | |
| 789 #endif | |
| 500 | 790 /* Add length of what "%x" resulted in. */ |
| 7 | 791 length += STRLEN(property + length); |
| 792 res = AppendPropCarefully(dpy, win, commProperty, property, length + 1); | |
| 793 vim_free(property); | |
| 794 return res; | |
| 795 } | |
| 796 return -1; | |
| 797 } | |
| 798 | |
| 799 static int | |
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800 WaitForReply(void *p) |
| 7 | 801 { |
| 802 Window *w = (Window *) p; | |
| 803 return ServerReplyFind(*w, SROP_Find) != NULL; | |
| 804 } | |
| 805 | |
| 806 /* | |
| 807 * Wait for replies from id (win) | |
| 808 * Return 0 and the malloc'ed string when a reply is available. | |
| 809 * Return -1 if the window becomes invalid while waiting. | |
| 810 */ | |
| 811 int | |
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812 serverReadReply( |
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813 Display *dpy, |
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814 Window win, |
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815 char_u **str, |
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816 int localLoop) |
| 7 | 817 { |
| 818 int len; | |
| 819 char_u *s; | |
| 820 struct ServerReply *p; | |
| 821 | |
| 822 ServerWait(dpy, win, WaitForReply, &win, localLoop, -1); | |
| 823 | |
| 824 if ((p = ServerReplyFind(win, SROP_Find)) != NULL && p->strings.ga_len > 0) | |
| 825 { | |
| 826 *str = vim_strsave(p->strings.ga_data); | |
| 827 len = STRLEN(*str) + 1; | |
| 828 if (len < p->strings.ga_len) | |
| 829 { | |
| 830 s = (char_u *) p->strings.ga_data; | |
| 831 mch_memmove(s, s + len, p->strings.ga_len - len); | |
| 832 p->strings.ga_len -= len; | |
| 833 } | |
| 834 else | |
| 835 { | |
| 836 /* Last string read. Remove from list */ | |
| 837 ga_clear(&p->strings); | |
| 838 ServerReplyFind(win, SROP_Delete); | |
| 839 } | |
| 840 return 0; | |
| 841 } | |
| 842 return -1; | |
| 843 } | |
| 844 | |
| 845 /* | |
| 846 * Check for replies from id (win). | |
| 847 * Return TRUE and a non-malloc'ed string if there is. Else return FALSE. | |
| 848 */ | |
| 849 int | |
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850 serverPeekReply(Display *dpy, Window win, char_u **str) |
| 7 | 851 { |
| 852 struct ServerReply *p; | |
| 853 | |
| 854 if ((p = ServerReplyFind(win, SROP_Find)) != NULL && p->strings.ga_len > 0) | |
| 855 { | |
| 856 if (str != NULL) | |
| 857 *str = p->strings.ga_data; | |
| 858 return 1; | |
| 859 } | |
| 860 if (!WindowValid(dpy, win)) | |
| 861 return -1; | |
| 862 return 0; | |
| 863 } | |
| 864 | |
| 865 | |
| 866 /* | |
| 867 * Initialize the communication channels for sending commands and receiving | |
| 868 * results. | |
| 869 */ | |
| 870 static int | |
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871 SendInit(Display *dpy) |
| 7 | 872 { |
| 873 XErrorHandler old_handler; | |
| 874 | |
| 875 /* | |
| 876 * Create the window used for communication, and set up an | |
| 877 * event handler for it. | |
| 878 */ | |
| 879 old_handler = XSetErrorHandler(x_error_check); | |
| 880 got_x_error = FALSE; | |
| 881 | |
| 882 if (commProperty == None) | |
| 883 commProperty = XInternAtom(dpy, "Comm", False); | |
| 884 if (vimProperty == None) | |
| 885 vimProperty = XInternAtom(dpy, "Vim", False); | |
| 886 if (registryProperty == None) | |
| 887 registryProperty = XInternAtom(dpy, "VimRegistry", False); | |
| 888 | |
| 889 if (commWindow == None) | |
| 890 { | |
| 891 commWindow = XCreateSimpleWindow(dpy, XDefaultRootWindow(dpy), | |
| 892 getpid(), 0, 10, 10, 0, | |
| 893 WhitePixel(dpy, DefaultScreen(dpy)), | |
| 894 WhitePixel(dpy, DefaultScreen(dpy))); | |
| 895 XSelectInput(dpy, commWindow, PropertyChangeMask); | |
| 896 /* WARNING: Do not step through this while debugging, it will hangup | |
| 897 * the X server! */ | |
| 898 XGrabServer(dpy); | |
| 899 DeleteAnyLingerer(dpy, commWindow); | |
| 900 XUngrabServer(dpy); | |
| 901 } | |
| 902 | |
| 903 /* Make window recognizable as a vim window */ | |
| 904 XChangeProperty(dpy, commWindow, vimProperty, XA_STRING, | |
| 905 8, PropModeReplace, (char_u *)VIM_VERSION_SHORT, | |
| 906 (int)STRLEN(VIM_VERSION_SHORT) + 1); | |
| 907 | |
| 908 XSync(dpy, False); | |
| 909 (void)XSetErrorHandler(old_handler); | |
| 910 | |
| 911 return got_x_error ? -1 : 0; | |
| 912 } | |
| 913 | |
| 914 /* | |
| 915 * Given a server name, see if the name exists in the registry for a | |
| 916 * particular display. | |
| 917 * | |
| 918 * If the given name is registered, return the ID of the window associated | |
| 919 * with the name. If the name isn't registered, then return 0. | |
| 920 * | |
| 921 * Side effects: | |
| 922 * If the registry property is improperly formed, then it is deleted. | |
| 923 * If "delete" is non-zero, then if the named server is found it is | |
| 924 * removed from the registry property. | |
| 925 */ | |
| 926 static Window | |
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927 LookupName( |
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928 Display *dpy, /* Display whose registry to check. */ |
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929 char_u *name, /* Name of a server. */ |
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930 int delete, /* If non-zero, delete info about name. */ |
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931 char_u **loose) /* Do another search matching -999 if not found |
| 7 | 932 Return result here if a match is found */ |
| 933 { | |
| 934 char_u *regProp, *entry; | |
| 935 char_u *p; | |
| 936 long_u numItems; | |
| 937 int_u returnValue; | |
| 938 | |
| 939 /* | |
| 940 * Read the registry property. | |
| 941 */ | |
| 942 if (GetRegProp(dpy, ®Prop, &numItems, FALSE) == FAIL) | |
| 943 return 0; | |
| 944 | |
| 945 /* | |
| 946 * Scan the property for the desired name. | |
| 947 */ | |
| 948 returnValue = (int_u)None; | |
| 949 entry = NULL; /* Not needed, but eliminates compiler warning. */ | |
| 1880 | 950 for (p = regProp; (long_u)(p - regProp) < numItems; ) |
| 7 | 951 { |
| 952 entry = p; | |
| 953 while (*p != 0 && !isspace(*p)) | |
| 954 p++; | |
| 955 if (*p != 0 && STRICMP(name, p + 1) == 0) | |
| 956 { | |
| 957 sscanf((char *)entry, "%x", &returnValue); | |
| 958 break; | |
| 959 } | |
| 960 while (*p != 0) | |
| 961 p++; | |
| 962 p++; | |
| 963 } | |
| 964 | |
| 965 if (loose != NULL && returnValue == (int_u)None && !IsSerialName(name)) | |
| 966 { | |
| 1880 | 967 for (p = regProp; (long_u)(p - regProp) < numItems; ) |
| 7 | 968 { |
| 969 entry = p; | |
| 970 while (*p != 0 && !isspace(*p)) | |
| 971 p++; | |
| 972 if (*p != 0 && IsSerialName(p + 1) | |
| 973 && STRNICMP(name, p + 1, STRLEN(name)) == 0) | |
| 974 { | |
| 975 sscanf((char *)entry, "%x", &returnValue); | |
| 976 *loose = vim_strsave(p + 1); | |
| 977 break; | |
| 978 } | |
| 979 while (*p != 0) | |
| 980 p++; | |
| 981 p++; | |
| 982 } | |
| 983 } | |
| 984 | |
| 985 /* | |
| 986 * Delete the property, if that is desired (copy down the | |
| 987 * remainder of the registry property to overlay the deleted | |
| 988 * info, then rewrite the property). | |
| 989 */ | |
| 990 if (delete && returnValue != (int_u)None) | |
| 991 { | |
| 992 int count; | |
| 993 | |
| 994 while (*p != 0) | |
| 995 p++; | |
| 996 p++; | |
| 997 count = numItems - (p - regProp); | |
| 998 if (count > 0) | |
| 1740 | 999 mch_memmove(entry, p, count); |
| 7 | 1000 XChangeProperty(dpy, RootWindow(dpy, 0), registryProperty, XA_STRING, |
| 1001 8, PropModeReplace, regProp, | |
| 1002 (int)(numItems - (p - entry))); | |
| 1003 XSync(dpy, False); | |
| 1004 } | |
| 1005 | |
| 1006 if (regProp != empty_prop) | |
| 1007 XFree(regProp); | |
| 1008 return (Window)returnValue; | |
| 1009 } | |
| 1010 | |
| 1011 /* | |
| 1197 | 1012 * Delete any lingering occurrence of window id. We promise that any |
| 1013 * occurrence is not ours since it is not yet put into the registry (by us) | |
| 7 | 1014 * |
| 1015 * This is necessary in the following scenario: | |
| 1016 * 1. There is an old windowid for an exit'ed vim in the registry | |
| 1017 * 2. We get that id for our commWindow but only want to send, not register. | |
| 1018 * 3. The window will mistakenly be regarded valid because of own commWindow | |
| 1019 */ | |
| 1020 static void | |
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1021 DeleteAnyLingerer( |
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1022 Display *dpy, /* Display whose registry to check. */ |
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1023 Window win) /* Window to remove */ |
| 7 | 1024 { |
| 1025 char_u *regProp, *entry = NULL; | |
| 1026 char_u *p; | |
| 1027 long_u numItems; | |
| 28 | 1028 int_u wwin; |
| 7 | 1029 |
| 1030 /* | |
| 1031 * Read the registry property. | |
| 1032 */ | |
| 1033 if (GetRegProp(dpy, ®Prop, &numItems, FALSE) == FAIL) | |
| 1034 return; | |
| 1035 | |
| 1036 /* Scan the property for the window id. */ | |
| 1880 | 1037 for (p = regProp; (long_u)(p - regProp) < numItems; ) |
| 7 | 1038 { |
| 1039 if (*p != 0) | |
| 1040 { | |
| 28 | 1041 sscanf((char *)p, "%x", &wwin); |
| 1042 if ((Window)wwin == win) | |
| 7 | 1043 { |
| 1044 int lastHalf; | |
| 1045 | |
| 1046 /* Copy down the remainder to delete entry */ | |
| 1047 entry = p; | |
| 1048 while (*p != 0) | |
| 1049 p++; | |
| 1050 p++; | |
| 1051 lastHalf = numItems - (p - regProp); | |
| 1052 if (lastHalf > 0) | |
| 1740 | 1053 mch_memmove(entry, p, lastHalf); |
| 7 | 1054 numItems = (entry - regProp) + lastHalf; |
| 1055 p = entry; | |
| 1056 continue; | |
| 1057 } | |
| 1058 } | |
| 1059 while (*p != 0) | |
| 1060 p++; | |
| 1061 p++; | |
| 1062 } | |
| 1063 | |
| 1064 if (entry != NULL) | |
| 1065 { | |
| 1066 XChangeProperty(dpy, RootWindow(dpy, 0), registryProperty, | |
| 1067 XA_STRING, 8, PropModeReplace, regProp, | |
| 1068 (int)(p - regProp)); | |
| 1069 XSync(dpy, False); | |
| 1070 } | |
| 1071 | |
| 1072 if (regProp != empty_prop) | |
| 1073 XFree(regProp); | |
| 1074 } | |
| 1075 | |
| 1076 /* | |
| 1077 * Read the registry property. Delete it when it's formatted wrong. | |
| 1078 * Return the property in "regPropp". "empty_prop" is used when it doesn't | |
| 1079 * exist yet. | |
| 1080 * Return OK when successful. | |
| 1081 */ | |
| 1082 static int | |
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1083 GetRegProp( |
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1084 Display *dpy, |
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1085 char_u **regPropp, |
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1086 long_u *numItemsp, |
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1087 int domsg) /* When TRUE give error message. */ |
| 7 | 1088 { |
| 1089 int result, actualFormat; | |
| 1090 long_u bytesAfter; | |
| 1091 Atom actualType; | |
| 819 | 1092 XErrorHandler old_handler; |
| 7 | 1093 |
| 1094 *regPropp = NULL; | |
| 819 | 1095 old_handler = XSetErrorHandler(x_error_check); |
| 1096 got_x_error = FALSE; | |
| 1097 | |
| 7 | 1098 result = XGetWindowProperty(dpy, RootWindow(dpy, 0), registryProperty, 0L, |
| 1099 (long)MAX_PROP_WORDS, False, | |
| 1100 XA_STRING, &actualType, | |
| 1101 &actualFormat, numItemsp, &bytesAfter, | |
| 1102 regPropp); | |
| 1103 | |
| 819 | 1104 XSync(dpy, FALSE); |
| 1105 (void)XSetErrorHandler(old_handler); | |
| 1106 if (got_x_error) | |
| 1107 return FAIL; | |
| 1108 | |
| 7 | 1109 if (actualType == None) |
| 1110 { | |
| 1111 /* No prop yet. Logically equal to the empty list */ | |
| 1112 *numItemsp = 0; | |
| 1113 *regPropp = empty_prop; | |
| 1114 return OK; | |
| 1115 } | |
| 1116 | |
| 1117 /* If the property is improperly formed, then delete it. */ | |
| 1118 if (result != Success || actualFormat != 8 || actualType != XA_STRING) | |
| 1119 { | |
| 1120 if (*regPropp != NULL) | |
| 1121 XFree(*regPropp); | |
| 1122 XDeleteProperty(dpy, RootWindow(dpy, 0), registryProperty); | |
| 1123 if (domsg) | |
| 1124 EMSG(_("E251: VIM instance registry property is badly formed. Deleted!")); | |
| 1125 return FAIL; | |
| 1126 } | |
| 1127 return OK; | |
| 1128 } | |
| 1129 | |
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1130 |
| 7 | 1131 /* |
| 1197 | 1132 * This procedure is invoked by the various X event loops throughout Vims when |
| 7 | 1133 * a property changes on the communication window. This procedure reads the |
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1134 * property and enqueues command requests and responses. If immediate is true, |
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1135 * it runs the event immediatly instead of enqueuing it. Immediate can cause |
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1136 * unintended behavior and should only be used for code that blocks for a |
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1137 * response. |
| 7 | 1138 */ |
| 1139 void | |
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1140 serverEventProc( |
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1141 Display *dpy, |
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1142 XEvent *eventPtr, /* Information about event. */ |
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1143 int immediate) /* Run event immediately. Should mostly be 0. */ |
| 7 | 1144 { |
| 1145 char_u *propInfo; | |
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1146 int result, actualFormat; |
| 7 | 1147 long_u numItems, bytesAfter; |
| 1148 Atom actualType; | |
| 1149 | |
| 1150 if (eventPtr != NULL) | |
| 1151 { | |
| 1152 if (eventPtr->xproperty.atom != commProperty | |
| 1153 || eventPtr->xproperty.state != PropertyNewValue) | |
| 1154 return; | |
| 1155 } | |
| 1156 | |
| 1157 /* | |
| 1158 * Read the comm property and delete it. | |
| 1159 */ | |
| 1160 propInfo = NULL; | |
| 1161 result = XGetWindowProperty(dpy, commWindow, commProperty, 0L, | |
| 1162 (long)MAX_PROP_WORDS, True, | |
| 1163 XA_STRING, &actualType, | |
| 1164 &actualFormat, &numItems, &bytesAfter, | |
| 1165 &propInfo); | |
| 1166 | |
| 1167 /* If the property doesn't exist or is improperly formed then ignore it. */ | |
| 1168 if (result != Success || actualType != XA_STRING || actualFormat != 8) | |
| 1169 { | |
| 1170 if (propInfo != NULL) | |
| 1171 XFree(propInfo); | |
| 1172 return; | |
| 1173 } | |
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1174 if (immediate) |
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1175 server_parse_message(dpy, propInfo, numItems); |
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1176 else |
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1177 save_in_queue(propInfo, numItems); |
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1178 } |
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1179 |
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1180 /* |
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1181 * Saves x clientserver commands in a queue so that they can be called when |
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1182 * vim is idle. |
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1183 */ |
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1184 static void |
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1185 save_in_queue(char_u *propInfo, long_u len) |
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1186 { |
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1187 x_queue_T *node; |
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1188 |
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1189 node = (x_queue_T *)alloc(sizeof(x_queue_T)); |
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1190 if (node == NULL) |
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1191 return; /* out of memory */ |
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1192 node->propInfo = propInfo; |
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1193 node->len = len; |
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1194 |
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1195 if (head.next == NULL) /* initialize circular queue */ |
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1196 { |
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1197 head.next = &head; |
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1198 head.prev = &head; |
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1199 } |
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1200 |
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1201 /* insert node at tail of queue */ |
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1202 node->next = &head; |
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1203 node->prev = head.prev; |
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1204 head.prev->next = node; |
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1205 head.prev = node; |
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1206 } |
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1207 |
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1208 /* |
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1209 * Parses queued clientserver messages. |
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1210 */ |
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1211 void |
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1212 server_parse_messages(void) |
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1213 { |
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1214 x_queue_T *node; |
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1215 |
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1216 if (!X_DISPLAY) |
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1217 return; /* cannot happen? */ |
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1218 while (head.next != NULL && head.next != &head) |
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1219 { |
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1220 node = head.next; |
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1221 head.next = node->next; |
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1222 node->next->prev = node->prev; |
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1223 server_parse_message(X_DISPLAY, node->propInfo, node->len); |
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1224 vim_free(node); |
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1225 } |
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1226 } |
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1227 |
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1228 /* |
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1229 * Returns a non-zero value if there are clientserver messages waiting |
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1230 * int the queue. |
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1231 */ |
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1232 int |
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1233 server_waiting(void) |
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1234 { |
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1235 return head.next != NULL && head.next != &head; |
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1236 } |
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1237 |
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1238 /* |
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1239 * Prases a single clientserver message. A single message may contain multiple |
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1240 * commands. |
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1241 * "propInfo" will be freed. |
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1242 */ |
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1243 static void |
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1244 server_parse_message( |
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1245 Display *dpy, |
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1246 char_u *propInfo, /* A string containing 0 or more X commands */ |
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1247 long_u numItems) /* The size of propInfo in bytes. */ |
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1248 { |
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1249 char_u *p; |
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1250 int code; |
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1251 char_u *tofree; |
| 7 | 1252 |
| 1253 /* | |
| 1254 * Several commands and results could arrive in the property at | |
| 1255 * one time; each iteration through the outer loop handles a | |
| 1256 * single command or result. | |
| 1257 */ | |
| 1880 | 1258 for (p = propInfo; (long_u)(p - propInfo) < numItems; ) |
| 7 | 1259 { |
| 1260 /* | |
| 1261 * Ignore leading NULs; each command or result starts with a | |
| 1262 * NUL so that no matter how badly formed a preceding command | |
| 1263 * is, we'll be able to tell that a new command/result is | |
| 1264 * starting. | |
| 1265 */ | |
| 1266 if (*p == 0) | |
| 1267 { | |
| 1268 p++; | |
| 1269 continue; | |
| 1270 } | |
| 1271 | |
| 1272 if ((*p == 'c' || *p == 'k') && (p[1] == 0)) | |
| 1273 { | |
| 1274 Window resWindow; | |
| 3668 | 1275 char_u *name, *script, *serial, *end; |
| 7 | 1276 Bool asKeys = *p == 'k'; |
| 39 | 1277 char_u *enc; |
| 7 | 1278 |
| 1279 /* | |
| 1280 * This is an incoming command from some other application. | |
| 1281 * Iterate over all of its options. Stop when we reach | |
| 1282 * the end of the property or something that doesn't look | |
| 1283 * like an option. | |
| 1284 */ | |
| 1285 p += 2; | |
| 1286 name = NULL; | |
| 1287 resWindow = None; | |
| 1288 serial = (char_u *)""; | |
| 1289 script = NULL; | |
| 39 | 1290 enc = NULL; |
| 1880 | 1291 while ((long_u)(p - propInfo) < numItems && *p == '-') |
| 7 | 1292 { |
| 1293 switch (p[1]) | |
| 1294 { | |
| 1295 case 'r': | |
| 1296 end = skipwhite(p + 2); | |
| 1297 resWindow = 0; | |
| 1298 while (vim_isxdigit(*end)) | |
| 1299 { | |
| 1300 resWindow = 16 * resWindow + (long_u)hex2nr(*end); | |
| 1301 ++end; | |
| 1302 } | |
| 1303 if (end == p + 2 || *end != ' ') | |
| 1304 resWindow = None; | |
| 1305 else | |
| 1306 { | |
| 1307 p = serial = end + 1; | |
| 1308 clientWindow = resWindow; /* Remember in global */ | |
| 1309 } | |
| 1310 break; | |
| 1311 case 'n': | |
| 1312 if (p[2] == ' ') | |
| 1313 name = p + 3; | |
| 1314 break; | |
| 1315 case 's': | |
| 1316 if (p[2] == ' ') | |
| 1317 script = p + 3; | |
| 1318 break; | |
| 39 | 1319 case 'E': |
| 1320 if (p[2] == ' ') | |
| 1321 enc = p + 3; | |
| 1322 break; | |
| 7 | 1323 } |
| 1324 while (*p != 0) | |
| 1325 p++; | |
| 1326 p++; | |
| 1327 } | |
| 1328 | |
| 1329 if (script == NULL || name == NULL) | |
| 1330 continue; | |
| 1331 | |
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1332 if (serverName != NULL && STRICMP(name, serverName) == 0) |
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1333 { |
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1334 script = serverConvert(enc, script, &tofree); |
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1335 if (asKeys) |
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1336 server_to_input_buf(script); |
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1337 else |
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commit https://github.com/vim/vim/commit/93c88e0f6a4a8f7634ed84721daf4af46fc0d5db
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1338 { |
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1339 char_u *res; |
| 3668 | 1340 |
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1341 res = eval_client_expr_to_string(script); |
| 3668 | 1342 if (resWindow != None) |
| 1343 { | |
| 1344 garray_T reply; | |
| 1345 | |
| 1346 /* Initialize the result property. */ | |
| 1347 ga_init2(&reply, 1, 100); | |
| 39 | 1348 #ifdef FEAT_MBYTE |
| 7009 | 1349 (void)ga_grow(&reply, 50 + STRLEN(p_enc)); |
| 3668 | 1350 sprintf(reply.ga_data, "%cr%c-E %s%c-s %s%c-r ", |
| 39 | 1351 0, 0, p_enc, 0, serial, 0); |
| 3668 | 1352 reply.ga_len = 14 + STRLEN(p_enc) + STRLEN(serial); |
| 39 | 1353 #else |
| 7009 | 1354 (void)ga_grow(&reply, 50); |
| 3668 | 1355 sprintf(reply.ga_data, "%cr%c-s %s%c-r ", |
| 1356 0, 0, serial, 0); | |
| 1357 reply.ga_len = 10 + STRLEN(serial); | |
| 39 | 1358 #endif |
| 3668 | 1359 |
| 1360 /* Evaluate the expression and return the result. */ | |
| 1361 if (res != NULL) | |
| 1362 ga_concat(&reply, res); | |
| 1363 else | |
| 1364 { | |
| 1365 ga_concat(&reply, (char_u *)_(e_invexprmsg)); | |
| 1366 ga_append(&reply, 0); | |
| 1367 ga_concat(&reply, (char_u *)"-c 1"); | |
| 1368 } | |
| 1369 ga_append(&reply, NUL); | |
| 1370 (void)AppendPropCarefully(dpy, resWindow, commProperty, | |
| 1371 reply.ga_data, reply.ga_len); | |
| 1372 ga_clear(&reply); | |
| 1373 } | |
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1374 vim_free(res); |
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1375 } |
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1376 vim_free(tofree); |
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1377 } |
| 7 | 1378 } |
| 1379 else if (*p == 'r' && p[1] == 0) | |
| 1380 { | |
| 39 | 1381 int serial, gotSerial; |
| 1382 char_u *res; | |
| 1383 PendingCommand *pcPtr; | |
| 1384 char_u *enc; | |
| 7 | 1385 |
| 1386 /* | |
| 1387 * This is a reply to some command that we sent out. Iterate | |
| 1388 * over all of its options. Stop when we reach the end of the | |
| 1389 * property or something that doesn't look like an option. | |
| 1390 */ | |
| 1391 p += 2; | |
| 1392 gotSerial = 0; | |
| 1393 res = (char_u *)""; | |
| 1394 code = 0; | |
| 39 | 1395 enc = NULL; |
| 1880 | 1396 while ((long_u)(p - propInfo) < numItems && *p == '-') |
| 7 | 1397 { |
| 1398 switch (p[1]) | |
| 1399 { | |
| 1400 case 'r': | |
| 1401 if (p[2] == ' ') | |
| 1402 res = p + 3; | |
| 1403 break; | |
| 39 | 1404 case 'E': |
| 1405 if (p[2] == ' ') | |
| 1406 enc = p + 3; | |
| 1407 break; | |
| 7 | 1408 case 's': |
| 1409 if (sscanf((char *)p + 2, " %d", &serial) == 1) | |
| 1410 gotSerial = 1; | |
| 1411 break; | |
| 1412 case 'c': | |
| 1413 if (sscanf((char *)p + 2, " %d", &code) != 1) | |
| 1414 code = 0; | |
| 1415 break; | |
| 1416 } | |
| 1417 while (*p != 0) | |
| 1418 p++; | |
| 1419 p++; | |
| 1420 } | |
| 1421 | |
| 1422 if (!gotSerial) | |
| 1423 continue; | |
| 1424 | |
| 1425 /* | |
| 1426 * Give the result information to anyone who's | |
| 1427 * waiting for it. | |
| 1428 */ | |
| 1429 for (pcPtr = pendingCommands; pcPtr != NULL; pcPtr = pcPtr->nextPtr) | |
| 1430 { | |
| 1431 if (serial != pcPtr->serial || pcPtr->result != NULL) | |
| 1432 continue; | |
| 1433 | |
| 1434 pcPtr->code = code; | |
| 7009 | 1435 res = serverConvert(enc, res, &tofree); |
| 1436 if (tofree == NULL) | |
| 1437 res = vim_strsave(res); | |
| 1438 pcPtr->result = res; | |
| 7 | 1439 break; |
| 1440 } | |
| 1441 } | |
| 1442 else if (*p == 'n' && p[1] == 0) | |
| 1443 { | |
| 1444 Window win = 0; | |
| 1445 unsigned int u; | |
| 1446 int gotWindow; | |
| 1447 char_u *str; | |
| 1448 struct ServerReply *r; | |
| 39 | 1449 char_u *enc; |
| 7 | 1450 |
| 1451 /* | |
| 1452 * This is a (n)otification. Sent with serverreply_send in VimL. | |
| 1453 * Execute any autocommand and save it for later retrieval | |
| 1454 */ | |
| 1455 p += 2; | |
| 1456 gotWindow = 0; | |
| 1457 str = (char_u *)""; | |
| 39 | 1458 enc = NULL; |
| 1880 | 1459 while ((long_u)(p - propInfo) < numItems && *p == '-') |
| 7 | 1460 { |
| 1461 switch (p[1]) | |
| 1462 { | |
| 1463 case 'n': | |
| 1464 if (p[2] == ' ') | |
| 1465 str = p + 3; | |
| 1466 break; | |
| 39 | 1467 case 'E': |
| 1468 if (p[2] == ' ') | |
| 1469 enc = p + 3; | |
| 1470 break; | |
| 7 | 1471 case 'w': |
| 1472 if (sscanf((char *)p + 2, " %x", &u) == 1) | |
| 1473 { | |
| 1474 win = u; | |
| 1475 gotWindow = 1; | |
| 1476 } | |
| 1477 break; | |
| 1478 } | |
| 1479 while (*p != 0) | |
| 1480 p++; | |
| 1481 p++; | |
| 1482 } | |
| 1483 | |
| 1484 if (!gotWindow) | |
| 1485 continue; | |
| 39 | 1486 str = serverConvert(enc, str, &tofree); |
| 7 | 1487 if ((r = ServerReplyFind(win, SROP_Add)) != NULL) |
| 1488 { | |
| 1489 ga_concat(&(r->strings), str); | |
| 21 | 1490 ga_append(&(r->strings), NUL); |
| 7 | 1491 } |
| 1492 #ifdef FEAT_AUTOCMD | |
| 1698 | 1493 { |
| 1494 char_u winstr[30]; | |
| 1495 | |
| 1496 sprintf((char *)winstr, "0x%x", (unsigned int)win); | |
| 1497 apply_autocmds(EVENT_REMOTEREPLY, winstr, str, TRUE, curbuf); | |
| 1498 } | |
| 7 | 1499 #endif |
| 39 | 1500 vim_free(tofree); |
| 7 | 1501 } |
| 1502 else | |
| 1503 { | |
| 1504 /* | |
| 1505 * Didn't recognize this thing. Just skip through the next | |
| 1506 * null character and try again. | |
| 1507 * Even if we get an 'r'(eply) we will throw it away as we | |
| 1508 * never specify (and thus expect) one | |
| 1509 */ | |
| 1510 while (*p != 0) | |
| 1511 p++; | |
| 1512 p++; | |
| 1513 } | |
| 1514 } | |
| 1515 XFree(propInfo); | |
| 1516 } | |
| 1517 | |
| 1518 /* | |
| 1519 * Append a given property to a given window, but set up an X error handler so | |
| 1520 * that if the append fails this procedure can return an error code rather | |
| 1521 * than having Xlib panic. | |
| 1522 * Return: 0 for OK, -1 for error | |
| 1523 */ | |
| 1524 static int | |
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1525 AppendPropCarefully( |
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1526 Display *dpy, /* Display on which to operate. */ |
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1527 Window window, /* Window whose property is to be modified. */ |
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1528 Atom property, /* Name of property. */ |
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1529 char_u *value, /* Characters to append to property. */ |
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1530 int length) /* How much to append */ |
| 7 | 1531 { |
| 1532 XErrorHandler old_handler; | |
| 1533 | |
| 1534 old_handler = XSetErrorHandler(x_error_check); | |
| 1535 got_x_error = FALSE; | |
| 1536 XChangeProperty(dpy, window, property, XA_STRING, 8, | |
| 1537 PropModeAppend, value, length); | |
| 1538 XSync(dpy, False); | |
| 1539 (void) XSetErrorHandler(old_handler); | |
| 1540 return got_x_error ? -1 : 0; | |
| 1541 } | |
| 1542 | |
| 1543 | |
| 1544 /* | |
| 1545 * Another X Error handler, just used to check for errors. | |
| 1546 */ | |
| 1547 static int | |
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1548 x_error_check(Display *dpy UNUSED, XErrorEvent *error_event UNUSED) |
| 7 | 1549 { |
| 1550 got_x_error = TRUE; | |
| 1551 return 0; | |
| 1552 } | |
| 1553 | |
| 1554 /* | |
| 1555 * Check if "str" looks like it had a serial number appended. | |
| 1556 * Actually just checks if the name ends in a digit. | |
| 1557 */ | |
| 1558 static int | |
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1559 IsSerialName(char_u *str) |
| 7 | 1560 { |
| 1561 int len = STRLEN(str); | |
| 1562 | |
| 1563 return (len > 1 && vim_isdigit(str[len - 1])); | |
| 1564 } | |
| 1565 #endif /* FEAT_CLIENTSERVER */ |